Si pe r lunJ Records Center S i l L _( ^__^ B K i K - 7 J O l i i h R 3 2lM
DRAFT VER PHASE III REPORT
OCONNOR COMPANY SUPERFUND SITE
CENTRAL MAINE POWER COMPANY AUGUSTA MAINE
DECEMBER 2001
Prepared by
WOODARDampCURRAN Engineering gt Science bull Operations
41 Hutchins Drive Portland ME 04102 (207)774-2112 wwwwoodardcurrancom
TABLE OF CONTENTS
TABLE OF CONTENTS
SECTIONTITLE PAGE NO
10 INTRODUCTION 1
11 Site Description 1 12 VER Operation Background 1
20 VER SYSTEM METHODOLGY 5
21 Purpose 5 22 System Operation 5
30 RESULTS 7
31 VER Oil Extraction Summary 7 32 Discussion 9
LIST OF FIGURES
Figure 1 Site Locus Map 2 Figure 2 Sampling Locations 3
LIST OF TABLES
Table 1 Summary of VER Operation 7 Table 2 Vacuum Enhanced Recovery (VER) Phase III Operation 8
APPENDIX A VER Operational Data
CMP 20534003 -ishy 12401 O205340 CMP OConner Superfund SitewipVER ReportWERreport_v2_doc
10 INTRODUCTION
This report presents the findings for the Phase ni operation of the Vacuum Enhanced Recovery (VER) system at the Central Maine Power (CMP) O Connor Superfund site The VER system was operated between August 20 2001 and October 10 2001 The VER system was operated in an effort to recover as much residual oil as possible from the subsurface soils and bedrock prior to pursuing a Technical Impracticability (TI) waiver for the site
11 SITE DESCRIPTION The OConnor Site is located along US Route 17 near the eastern boundary of the city limits of Augusta Maine as depicted on Figure 1 Previous salvage and transformer recycling activities by the F OConnor Company at the Site led to uncontrolled releases of oil containing polychlorinated biphenyls (PCBs) and volatile organic compounds The source area prior to remediation activities completed in 1997 covered approximately nine acres within the 23-acre Site and was situated on the crest of a low ridge aligned parallel to the west branch of Riggs Brook The source area was primarily located surrounding Transformer Work Area Two (TWA-H)
12 VER OPERATION BACKGROUND VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system induces a pressure gradient in the soils and bedrock fractures and causes water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure dissipates as it migrates through the soil and rock The actual radius of influence depends on the geology and the amount of applied vacuum
It is believed that the presence of oil in the subsurface soils and particularly bedrock at the Site is due in part to a pilot-scale aquifer test performed in 1992 This test was performed on OW-202B After two days of pumping approximately 15 feet of oil was measured in the well Wells OW-301B and OW shy302B contained 11 feet and 35 feet respectively To address the removal of subsurface oils CMP implemented a VER system
The VER has been previously applied at the site to remove residual oils from the subsurface overburden soils In the Fall of 1996 prior to the source control excavation VER Phase I was initiated and included installation of an extraction well (RW-101) installed in the tillbedrock interface and two injection wells Phase I was operated as a pilot to determine the feasibility of the VER system After a successful pilot the system was operated during Phase II for five (5) months (January through May 1997) A total of 28 gallons of oil were recovered during the first two phases Phases I and n focused on the tillbedrock interface for oil removal VER Phase HI system operation was initiated to address the removal of oil in both the bedrock and subsurface soils
CMP 205340 03 -Ishy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
SITE MAP COMPILED FROM USGS TOPOGRAPHIC QUADRANGLES FOR TOGUS POND MAINE PHOTOINSPECTED 19B2 AND AUGUSTA MAINE PHOTOshyINSPECTED 1980
^VYgt 11) -l-mt snmdash shy
SITE LOCATION bull
ampfM^ff(deg~ lt^wW9pound^gtRgtfc4ttj7l JHU t ft^-^s
DESBYAKu | OCONNOR COMPANY SUPERFUND SITE SEDIMENT AND BIOTA SAMPLING AND ANALYSIS PLAN
FIGURE 1
SITE LOCATION MAP SCALE 1-2000 I JOB NO 9601203
DATE APRIL 1997
WOODARD amp CURRAN INC PORTLAND MC bull BANGOR ME bull OEDHAM MA
The VER Phase III system was proposed for the four bedrock wells OW-202B OW-204B OW-301B and OW-302B and the VER recovery well (RW-101) located in TWA II (Figure 2) in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows contaminants are not migrating in the groundwater and contamination levels are not increasing PCBs have not been detected in any Management of Migration (MOM) monitoring wells since the spring of 1996 The groundwater data from the site indicates contaminants have stagnated in the tillbedrock migration pathway A detailed history of MOM Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997
CMP 20534003 -4shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
20 VER SYSTEM METHODOLGY
This section presents the purpose and methodology for Phase in operation of the VER system The VER system was operated at the O Connor Site as described in the Long-Term Groundwater Quality Monitoring Program and Phase HI Vacuum Enhanced Recovery of Oil Work Plan submitted to the USEPA and MEDEP in July of 2001
21 PURPOSE
The purpose of the VER Phase HI program was to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA n since Source Control with no enhancement to the gradient around the well The VER system operation created a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down
22 SYSTEM OPERATION
A vacuum was applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system was operated on one well at a time The operation of the VER system used components of the original VER system to the greatest extent possible The five wells were monitored daily for oil and water table elevation during operation of the VER
The top of the well to which the vacuum was to be applied was sealed and equipped with a vacuum line and vacuum gauge The vacuum pressure was set by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump was recirculated using a small (-15 gallons) seal water reservoir The volume of oil recovered was expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps were predominately used On two (2) occasions a bailer was used to remove oil when larger amounts of oil were found in the well
The length of time that the VER system was operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 was dependent upon observations made in the field The VER system was installed on one well operated on that well and oil flow into the well and other wells in the former TWA n area was measured After the test was completed at a well the VER system was moved to another well within the former TWA n area and the test was initiated again including monitoring for oil at each of the other wells This procedure was followed at each of the five wells At the end of each well test a table was generated that detailed the results of the test A preliminary trip report was also sent by CMP to both the USEPA and the MEDEP via electronic mail This allowed all interested parties to stay up to date with the VER system results The testing was moved to each of the five wells in the circuit until as much residual oil as practical was withdrawn by the VER system
CMP 205340 03 -5- 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
An itemized list of the procedure followed at each well was is presented below
1 Measure initial water levels and residual oil thickness in subject and adjacent wells 2 If necessary remove accumulated oil 3 Place suction cap apparatus on top of well and ensure that hose clamp was tight 4 Ensure liquid ring seal water reservoir had adequate water 5 Start VER pump 6 Set vacuum pressure utilizing air valve and adjacent vacuum gauge 7 Check suction cap apparatus for leaks 8 Allow operation of system for allotted time (variable based on observations) 9 Return to site measureremove recovered oil and 10 Move to next well in sequence Repeat procedures above
CMP 205340 03 -6shyO 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_ doc
12401
30 RESULTS
The results of the VER Phase m system operation between August 20 2001 and October 10 2001 are presented in this section Summary tables of VER system operation are presented and a discussion of the results is presented in Section 32 Appendix A contains detailed backup for the summary tables
31 VER OIL EXTRACTION SUMMARY
A summary of the VER operations conducted from August through October is presented in Table 1 below Table 1 presents the number of runs number of pulses range of pulse durations and range of applied vacuums at each well
Table 1 Summary of VER Operation
Range of Pulse Number of Number of Durations Range of Applied
Well ID Runs Pulses (hrs) Vacuums (in Hg) OW-302B 2 4 173-238 20
OW-202B 5 11 2 1 -18 2 10-20
OW-301B 2 3 173-239 5-20
OW-204B 1 2 34-47 5 - 12
RW-101 4 13 58-259 5-20 Notes 20 in Hg was vacuum applied during all runs
Table 2 documents each run including the total length of time for all pulses that vacuum was applied to each well total oil recovered and start and end dates The amount of oil recovered for each run at the vacuum well is highlighted Maximum oil recovery at each well occurred when the vacuum was applied to that well with the exception of RW-101 The maximum amount of oil recovered at this well occurred when a vacuum was applied to OW-302B Lesser amounts of oil were recovered in some wells when the vacuum was being applied to other wells in the TWA-II area The amount of oil recovered passively between December 1997 and the commencement of VER Phase HI in August 2001 is 694 gallons A total of 1981 gallons were recovered during this VER operation compared to 28 gallons collected during Phase I and Phase n VER operation The total oil recovered using VER and passive recovery is 5475 gallons
CMP 20534003 -7shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
TABLE OF CONTENTS
TABLE OF CONTENTS
SECTIONTITLE PAGE NO
10 INTRODUCTION 1
11 Site Description 1 12 VER Operation Background 1
20 VER SYSTEM METHODOLGY 5
21 Purpose 5 22 System Operation 5
30 RESULTS 7
31 VER Oil Extraction Summary 7 32 Discussion 9
LIST OF FIGURES
Figure 1 Site Locus Map 2 Figure 2 Sampling Locations 3
LIST OF TABLES
Table 1 Summary of VER Operation 7 Table 2 Vacuum Enhanced Recovery (VER) Phase III Operation 8
APPENDIX A VER Operational Data
CMP 20534003 -ishy 12401 O205340 CMP OConner Superfund SitewipVER ReportWERreport_v2_doc
10 INTRODUCTION
This report presents the findings for the Phase ni operation of the Vacuum Enhanced Recovery (VER) system at the Central Maine Power (CMP) O Connor Superfund site The VER system was operated between August 20 2001 and October 10 2001 The VER system was operated in an effort to recover as much residual oil as possible from the subsurface soils and bedrock prior to pursuing a Technical Impracticability (TI) waiver for the site
11 SITE DESCRIPTION The OConnor Site is located along US Route 17 near the eastern boundary of the city limits of Augusta Maine as depicted on Figure 1 Previous salvage and transformer recycling activities by the F OConnor Company at the Site led to uncontrolled releases of oil containing polychlorinated biphenyls (PCBs) and volatile organic compounds The source area prior to remediation activities completed in 1997 covered approximately nine acres within the 23-acre Site and was situated on the crest of a low ridge aligned parallel to the west branch of Riggs Brook The source area was primarily located surrounding Transformer Work Area Two (TWA-H)
12 VER OPERATION BACKGROUND VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system induces a pressure gradient in the soils and bedrock fractures and causes water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure dissipates as it migrates through the soil and rock The actual radius of influence depends on the geology and the amount of applied vacuum
It is believed that the presence of oil in the subsurface soils and particularly bedrock at the Site is due in part to a pilot-scale aquifer test performed in 1992 This test was performed on OW-202B After two days of pumping approximately 15 feet of oil was measured in the well Wells OW-301B and OW shy302B contained 11 feet and 35 feet respectively To address the removal of subsurface oils CMP implemented a VER system
The VER has been previously applied at the site to remove residual oils from the subsurface overburden soils In the Fall of 1996 prior to the source control excavation VER Phase I was initiated and included installation of an extraction well (RW-101) installed in the tillbedrock interface and two injection wells Phase I was operated as a pilot to determine the feasibility of the VER system After a successful pilot the system was operated during Phase II for five (5) months (January through May 1997) A total of 28 gallons of oil were recovered during the first two phases Phases I and n focused on the tillbedrock interface for oil removal VER Phase HI system operation was initiated to address the removal of oil in both the bedrock and subsurface soils
CMP 205340 03 -Ishy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
SITE MAP COMPILED FROM USGS TOPOGRAPHIC QUADRANGLES FOR TOGUS POND MAINE PHOTOINSPECTED 19B2 AND AUGUSTA MAINE PHOTOshyINSPECTED 1980
^VYgt 11) -l-mt snmdash shy
SITE LOCATION bull
ampfM^ff(deg~ lt^wW9pound^gtRgtfc4ttj7l JHU t ft^-^s
DESBYAKu | OCONNOR COMPANY SUPERFUND SITE SEDIMENT AND BIOTA SAMPLING AND ANALYSIS PLAN
FIGURE 1
SITE LOCATION MAP SCALE 1-2000 I JOB NO 9601203
DATE APRIL 1997
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The VER Phase III system was proposed for the four bedrock wells OW-202B OW-204B OW-301B and OW-302B and the VER recovery well (RW-101) located in TWA II (Figure 2) in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows contaminants are not migrating in the groundwater and contamination levels are not increasing PCBs have not been detected in any Management of Migration (MOM) monitoring wells since the spring of 1996 The groundwater data from the site indicates contaminants have stagnated in the tillbedrock migration pathway A detailed history of MOM Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997
CMP 20534003 -4shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
20 VER SYSTEM METHODOLGY
This section presents the purpose and methodology for Phase in operation of the VER system The VER system was operated at the O Connor Site as described in the Long-Term Groundwater Quality Monitoring Program and Phase HI Vacuum Enhanced Recovery of Oil Work Plan submitted to the USEPA and MEDEP in July of 2001
21 PURPOSE
The purpose of the VER Phase HI program was to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA n since Source Control with no enhancement to the gradient around the well The VER system operation created a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down
22 SYSTEM OPERATION
A vacuum was applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system was operated on one well at a time The operation of the VER system used components of the original VER system to the greatest extent possible The five wells were monitored daily for oil and water table elevation during operation of the VER
The top of the well to which the vacuum was to be applied was sealed and equipped with a vacuum line and vacuum gauge The vacuum pressure was set by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump was recirculated using a small (-15 gallons) seal water reservoir The volume of oil recovered was expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps were predominately used On two (2) occasions a bailer was used to remove oil when larger amounts of oil were found in the well
The length of time that the VER system was operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 was dependent upon observations made in the field The VER system was installed on one well operated on that well and oil flow into the well and other wells in the former TWA n area was measured After the test was completed at a well the VER system was moved to another well within the former TWA n area and the test was initiated again including monitoring for oil at each of the other wells This procedure was followed at each of the five wells At the end of each well test a table was generated that detailed the results of the test A preliminary trip report was also sent by CMP to both the USEPA and the MEDEP via electronic mail This allowed all interested parties to stay up to date with the VER system results The testing was moved to each of the five wells in the circuit until as much residual oil as practical was withdrawn by the VER system
CMP 205340 03 -5- 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
An itemized list of the procedure followed at each well was is presented below
1 Measure initial water levels and residual oil thickness in subject and adjacent wells 2 If necessary remove accumulated oil 3 Place suction cap apparatus on top of well and ensure that hose clamp was tight 4 Ensure liquid ring seal water reservoir had adequate water 5 Start VER pump 6 Set vacuum pressure utilizing air valve and adjacent vacuum gauge 7 Check suction cap apparatus for leaks 8 Allow operation of system for allotted time (variable based on observations) 9 Return to site measureremove recovered oil and 10 Move to next well in sequence Repeat procedures above
CMP 205340 03 -6shyO 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_ doc
12401
30 RESULTS
The results of the VER Phase m system operation between August 20 2001 and October 10 2001 are presented in this section Summary tables of VER system operation are presented and a discussion of the results is presented in Section 32 Appendix A contains detailed backup for the summary tables
31 VER OIL EXTRACTION SUMMARY
A summary of the VER operations conducted from August through October is presented in Table 1 below Table 1 presents the number of runs number of pulses range of pulse durations and range of applied vacuums at each well
Table 1 Summary of VER Operation
Range of Pulse Number of Number of Durations Range of Applied
Well ID Runs Pulses (hrs) Vacuums (in Hg) OW-302B 2 4 173-238 20
OW-202B 5 11 2 1 -18 2 10-20
OW-301B 2 3 173-239 5-20
OW-204B 1 2 34-47 5 - 12
RW-101 4 13 58-259 5-20 Notes 20 in Hg was vacuum applied during all runs
Table 2 documents each run including the total length of time for all pulses that vacuum was applied to each well total oil recovered and start and end dates The amount of oil recovered for each run at the vacuum well is highlighted Maximum oil recovery at each well occurred when the vacuum was applied to that well with the exception of RW-101 The maximum amount of oil recovered at this well occurred when a vacuum was applied to OW-302B Lesser amounts of oil were recovered in some wells when the vacuum was being applied to other wells in the TWA-II area The amount of oil recovered passively between December 1997 and the commencement of VER Phase HI in August 2001 is 694 gallons A total of 1981 gallons were recovered during this VER operation compared to 28 gallons collected during Phase I and Phase n VER operation The total oil recovered using VER and passive recovery is 5475 gallons
CMP 20534003 -7shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
TABLE OF CONTENTS
SECTIONTITLE PAGE NO
10 INTRODUCTION 1
11 Site Description 1 12 VER Operation Background 1
20 VER SYSTEM METHODOLGY 5
21 Purpose 5 22 System Operation 5
30 RESULTS 7
31 VER Oil Extraction Summary 7 32 Discussion 9
LIST OF FIGURES
Figure 1 Site Locus Map 2 Figure 2 Sampling Locations 3
LIST OF TABLES
Table 1 Summary of VER Operation 7 Table 2 Vacuum Enhanced Recovery (VER) Phase III Operation 8
APPENDIX A VER Operational Data
CMP 20534003 -ishy 12401 O205340 CMP OConner Superfund SitewipVER ReportWERreport_v2_doc
10 INTRODUCTION
This report presents the findings for the Phase ni operation of the Vacuum Enhanced Recovery (VER) system at the Central Maine Power (CMP) O Connor Superfund site The VER system was operated between August 20 2001 and October 10 2001 The VER system was operated in an effort to recover as much residual oil as possible from the subsurface soils and bedrock prior to pursuing a Technical Impracticability (TI) waiver for the site
11 SITE DESCRIPTION The OConnor Site is located along US Route 17 near the eastern boundary of the city limits of Augusta Maine as depicted on Figure 1 Previous salvage and transformer recycling activities by the F OConnor Company at the Site led to uncontrolled releases of oil containing polychlorinated biphenyls (PCBs) and volatile organic compounds The source area prior to remediation activities completed in 1997 covered approximately nine acres within the 23-acre Site and was situated on the crest of a low ridge aligned parallel to the west branch of Riggs Brook The source area was primarily located surrounding Transformer Work Area Two (TWA-H)
12 VER OPERATION BACKGROUND VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system induces a pressure gradient in the soils and bedrock fractures and causes water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure dissipates as it migrates through the soil and rock The actual radius of influence depends on the geology and the amount of applied vacuum
It is believed that the presence of oil in the subsurface soils and particularly bedrock at the Site is due in part to a pilot-scale aquifer test performed in 1992 This test was performed on OW-202B After two days of pumping approximately 15 feet of oil was measured in the well Wells OW-301B and OW shy302B contained 11 feet and 35 feet respectively To address the removal of subsurface oils CMP implemented a VER system
The VER has been previously applied at the site to remove residual oils from the subsurface overburden soils In the Fall of 1996 prior to the source control excavation VER Phase I was initiated and included installation of an extraction well (RW-101) installed in the tillbedrock interface and two injection wells Phase I was operated as a pilot to determine the feasibility of the VER system After a successful pilot the system was operated during Phase II for five (5) months (January through May 1997) A total of 28 gallons of oil were recovered during the first two phases Phases I and n focused on the tillbedrock interface for oil removal VER Phase HI system operation was initiated to address the removal of oil in both the bedrock and subsurface soils
CMP 205340 03 -Ishy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
SITE MAP COMPILED FROM USGS TOPOGRAPHIC QUADRANGLES FOR TOGUS POND MAINE PHOTOINSPECTED 19B2 AND AUGUSTA MAINE PHOTOshyINSPECTED 1980
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FIGURE 1
SITE LOCATION MAP SCALE 1-2000 I JOB NO 9601203
DATE APRIL 1997
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The VER Phase III system was proposed for the four bedrock wells OW-202B OW-204B OW-301B and OW-302B and the VER recovery well (RW-101) located in TWA II (Figure 2) in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows contaminants are not migrating in the groundwater and contamination levels are not increasing PCBs have not been detected in any Management of Migration (MOM) monitoring wells since the spring of 1996 The groundwater data from the site indicates contaminants have stagnated in the tillbedrock migration pathway A detailed history of MOM Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997
CMP 20534003 -4shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
20 VER SYSTEM METHODOLGY
This section presents the purpose and methodology for Phase in operation of the VER system The VER system was operated at the O Connor Site as described in the Long-Term Groundwater Quality Monitoring Program and Phase HI Vacuum Enhanced Recovery of Oil Work Plan submitted to the USEPA and MEDEP in July of 2001
21 PURPOSE
The purpose of the VER Phase HI program was to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA n since Source Control with no enhancement to the gradient around the well The VER system operation created a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down
22 SYSTEM OPERATION
A vacuum was applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system was operated on one well at a time The operation of the VER system used components of the original VER system to the greatest extent possible The five wells were monitored daily for oil and water table elevation during operation of the VER
The top of the well to which the vacuum was to be applied was sealed and equipped with a vacuum line and vacuum gauge The vacuum pressure was set by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump was recirculated using a small (-15 gallons) seal water reservoir The volume of oil recovered was expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps were predominately used On two (2) occasions a bailer was used to remove oil when larger amounts of oil were found in the well
The length of time that the VER system was operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 was dependent upon observations made in the field The VER system was installed on one well operated on that well and oil flow into the well and other wells in the former TWA n area was measured After the test was completed at a well the VER system was moved to another well within the former TWA n area and the test was initiated again including monitoring for oil at each of the other wells This procedure was followed at each of the five wells At the end of each well test a table was generated that detailed the results of the test A preliminary trip report was also sent by CMP to both the USEPA and the MEDEP via electronic mail This allowed all interested parties to stay up to date with the VER system results The testing was moved to each of the five wells in the circuit until as much residual oil as practical was withdrawn by the VER system
CMP 205340 03 -5- 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
An itemized list of the procedure followed at each well was is presented below
1 Measure initial water levels and residual oil thickness in subject and adjacent wells 2 If necessary remove accumulated oil 3 Place suction cap apparatus on top of well and ensure that hose clamp was tight 4 Ensure liquid ring seal water reservoir had adequate water 5 Start VER pump 6 Set vacuum pressure utilizing air valve and adjacent vacuum gauge 7 Check suction cap apparatus for leaks 8 Allow operation of system for allotted time (variable based on observations) 9 Return to site measureremove recovered oil and 10 Move to next well in sequence Repeat procedures above
CMP 205340 03 -6shyO 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_ doc
12401
30 RESULTS
The results of the VER Phase m system operation between August 20 2001 and October 10 2001 are presented in this section Summary tables of VER system operation are presented and a discussion of the results is presented in Section 32 Appendix A contains detailed backup for the summary tables
31 VER OIL EXTRACTION SUMMARY
A summary of the VER operations conducted from August through October is presented in Table 1 below Table 1 presents the number of runs number of pulses range of pulse durations and range of applied vacuums at each well
Table 1 Summary of VER Operation
Range of Pulse Number of Number of Durations Range of Applied
Well ID Runs Pulses (hrs) Vacuums (in Hg) OW-302B 2 4 173-238 20
OW-202B 5 11 2 1 -18 2 10-20
OW-301B 2 3 173-239 5-20
OW-204B 1 2 34-47 5 - 12
RW-101 4 13 58-259 5-20 Notes 20 in Hg was vacuum applied during all runs
Table 2 documents each run including the total length of time for all pulses that vacuum was applied to each well total oil recovered and start and end dates The amount of oil recovered for each run at the vacuum well is highlighted Maximum oil recovery at each well occurred when the vacuum was applied to that well with the exception of RW-101 The maximum amount of oil recovered at this well occurred when a vacuum was applied to OW-302B Lesser amounts of oil were recovered in some wells when the vacuum was being applied to other wells in the TWA-II area The amount of oil recovered passively between December 1997 and the commencement of VER Phase HI in August 2001 is 694 gallons A total of 1981 gallons were recovered during this VER operation compared to 28 gallons collected during Phase I and Phase n VER operation The total oil recovered using VER and passive recovery is 5475 gallons
CMP 20534003 -7shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
10 INTRODUCTION
This report presents the findings for the Phase ni operation of the Vacuum Enhanced Recovery (VER) system at the Central Maine Power (CMP) O Connor Superfund site The VER system was operated between August 20 2001 and October 10 2001 The VER system was operated in an effort to recover as much residual oil as possible from the subsurface soils and bedrock prior to pursuing a Technical Impracticability (TI) waiver for the site
11 SITE DESCRIPTION The OConnor Site is located along US Route 17 near the eastern boundary of the city limits of Augusta Maine as depicted on Figure 1 Previous salvage and transformer recycling activities by the F OConnor Company at the Site led to uncontrolled releases of oil containing polychlorinated biphenyls (PCBs) and volatile organic compounds The source area prior to remediation activities completed in 1997 covered approximately nine acres within the 23-acre Site and was situated on the crest of a low ridge aligned parallel to the west branch of Riggs Brook The source area was primarily located surrounding Transformer Work Area Two (TWA-H)
12 VER OPERATION BACKGROUND VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system induces a pressure gradient in the soils and bedrock fractures and causes water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure dissipates as it migrates through the soil and rock The actual radius of influence depends on the geology and the amount of applied vacuum
It is believed that the presence of oil in the subsurface soils and particularly bedrock at the Site is due in part to a pilot-scale aquifer test performed in 1992 This test was performed on OW-202B After two days of pumping approximately 15 feet of oil was measured in the well Wells OW-301B and OW shy302B contained 11 feet and 35 feet respectively To address the removal of subsurface oils CMP implemented a VER system
The VER has been previously applied at the site to remove residual oils from the subsurface overburden soils In the Fall of 1996 prior to the source control excavation VER Phase I was initiated and included installation of an extraction well (RW-101) installed in the tillbedrock interface and two injection wells Phase I was operated as a pilot to determine the feasibility of the VER system After a successful pilot the system was operated during Phase II for five (5) months (January through May 1997) A total of 28 gallons of oil were recovered during the first two phases Phases I and n focused on the tillbedrock interface for oil removal VER Phase HI system operation was initiated to address the removal of oil in both the bedrock and subsurface soils
CMP 205340 03 -Ishy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
SITE MAP COMPILED FROM USGS TOPOGRAPHIC QUADRANGLES FOR TOGUS POND MAINE PHOTOINSPECTED 19B2 AND AUGUSTA MAINE PHOTOshyINSPECTED 1980
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SITE LOCATION bull
ampfM^ff(deg~ lt^wW9pound^gtRgtfc4ttj7l JHU t ft^-^s
DESBYAKu | OCONNOR COMPANY SUPERFUND SITE SEDIMENT AND BIOTA SAMPLING AND ANALYSIS PLAN
FIGURE 1
SITE LOCATION MAP SCALE 1-2000 I JOB NO 9601203
DATE APRIL 1997
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The VER Phase III system was proposed for the four bedrock wells OW-202B OW-204B OW-301B and OW-302B and the VER recovery well (RW-101) located in TWA II (Figure 2) in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows contaminants are not migrating in the groundwater and contamination levels are not increasing PCBs have not been detected in any Management of Migration (MOM) monitoring wells since the spring of 1996 The groundwater data from the site indicates contaminants have stagnated in the tillbedrock migration pathway A detailed history of MOM Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997
CMP 20534003 -4shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
20 VER SYSTEM METHODOLGY
This section presents the purpose and methodology for Phase in operation of the VER system The VER system was operated at the O Connor Site as described in the Long-Term Groundwater Quality Monitoring Program and Phase HI Vacuum Enhanced Recovery of Oil Work Plan submitted to the USEPA and MEDEP in July of 2001
21 PURPOSE
The purpose of the VER Phase HI program was to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA n since Source Control with no enhancement to the gradient around the well The VER system operation created a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down
22 SYSTEM OPERATION
A vacuum was applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system was operated on one well at a time The operation of the VER system used components of the original VER system to the greatest extent possible The five wells were monitored daily for oil and water table elevation during operation of the VER
The top of the well to which the vacuum was to be applied was sealed and equipped with a vacuum line and vacuum gauge The vacuum pressure was set by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump was recirculated using a small (-15 gallons) seal water reservoir The volume of oil recovered was expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps were predominately used On two (2) occasions a bailer was used to remove oil when larger amounts of oil were found in the well
The length of time that the VER system was operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 was dependent upon observations made in the field The VER system was installed on one well operated on that well and oil flow into the well and other wells in the former TWA n area was measured After the test was completed at a well the VER system was moved to another well within the former TWA n area and the test was initiated again including monitoring for oil at each of the other wells This procedure was followed at each of the five wells At the end of each well test a table was generated that detailed the results of the test A preliminary trip report was also sent by CMP to both the USEPA and the MEDEP via electronic mail This allowed all interested parties to stay up to date with the VER system results The testing was moved to each of the five wells in the circuit until as much residual oil as practical was withdrawn by the VER system
CMP 205340 03 -5- 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
An itemized list of the procedure followed at each well was is presented below
1 Measure initial water levels and residual oil thickness in subject and adjacent wells 2 If necessary remove accumulated oil 3 Place suction cap apparatus on top of well and ensure that hose clamp was tight 4 Ensure liquid ring seal water reservoir had adequate water 5 Start VER pump 6 Set vacuum pressure utilizing air valve and adjacent vacuum gauge 7 Check suction cap apparatus for leaks 8 Allow operation of system for allotted time (variable based on observations) 9 Return to site measureremove recovered oil and 10 Move to next well in sequence Repeat procedures above
CMP 205340 03 -6shyO 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_ doc
12401
30 RESULTS
The results of the VER Phase m system operation between August 20 2001 and October 10 2001 are presented in this section Summary tables of VER system operation are presented and a discussion of the results is presented in Section 32 Appendix A contains detailed backup for the summary tables
31 VER OIL EXTRACTION SUMMARY
A summary of the VER operations conducted from August through October is presented in Table 1 below Table 1 presents the number of runs number of pulses range of pulse durations and range of applied vacuums at each well
Table 1 Summary of VER Operation
Range of Pulse Number of Number of Durations Range of Applied
Well ID Runs Pulses (hrs) Vacuums (in Hg) OW-302B 2 4 173-238 20
OW-202B 5 11 2 1 -18 2 10-20
OW-301B 2 3 173-239 5-20
OW-204B 1 2 34-47 5 - 12
RW-101 4 13 58-259 5-20 Notes 20 in Hg was vacuum applied during all runs
Table 2 documents each run including the total length of time for all pulses that vacuum was applied to each well total oil recovered and start and end dates The amount of oil recovered for each run at the vacuum well is highlighted Maximum oil recovery at each well occurred when the vacuum was applied to that well with the exception of RW-101 The maximum amount of oil recovered at this well occurred when a vacuum was applied to OW-302B Lesser amounts of oil were recovered in some wells when the vacuum was being applied to other wells in the TWA-II area The amount of oil recovered passively between December 1997 and the commencement of VER Phase HI in August 2001 is 694 gallons A total of 1981 gallons were recovered during this VER operation compared to 28 gallons collected during Phase I and Phase n VER operation The total oil recovered using VER and passive recovery is 5475 gallons
CMP 20534003 -7shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
SITE MAP COMPILED FROM USGS TOPOGRAPHIC QUADRANGLES FOR TOGUS POND MAINE PHOTOINSPECTED 19B2 AND AUGUSTA MAINE PHOTOshyINSPECTED 1980
^VYgt 11) -l-mt snmdash shy
SITE LOCATION bull
ampfM^ff(deg~ lt^wW9pound^gtRgtfc4ttj7l JHU t ft^-^s
DESBYAKu | OCONNOR COMPANY SUPERFUND SITE SEDIMENT AND BIOTA SAMPLING AND ANALYSIS PLAN
FIGURE 1
SITE LOCATION MAP SCALE 1-2000 I JOB NO 9601203
DATE APRIL 1997
WOODARD amp CURRAN INC PORTLAND MC bull BANGOR ME bull OEDHAM MA
The VER Phase III system was proposed for the four bedrock wells OW-202B OW-204B OW-301B and OW-302B and the VER recovery well (RW-101) located in TWA II (Figure 2) in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows contaminants are not migrating in the groundwater and contamination levels are not increasing PCBs have not been detected in any Management of Migration (MOM) monitoring wells since the spring of 1996 The groundwater data from the site indicates contaminants have stagnated in the tillbedrock migration pathway A detailed history of MOM Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997
CMP 20534003 -4shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
20 VER SYSTEM METHODOLGY
This section presents the purpose and methodology for Phase in operation of the VER system The VER system was operated at the O Connor Site as described in the Long-Term Groundwater Quality Monitoring Program and Phase HI Vacuum Enhanced Recovery of Oil Work Plan submitted to the USEPA and MEDEP in July of 2001
21 PURPOSE
The purpose of the VER Phase HI program was to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA n since Source Control with no enhancement to the gradient around the well The VER system operation created a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down
22 SYSTEM OPERATION
A vacuum was applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system was operated on one well at a time The operation of the VER system used components of the original VER system to the greatest extent possible The five wells were monitored daily for oil and water table elevation during operation of the VER
The top of the well to which the vacuum was to be applied was sealed and equipped with a vacuum line and vacuum gauge The vacuum pressure was set by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump was recirculated using a small (-15 gallons) seal water reservoir The volume of oil recovered was expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps were predominately used On two (2) occasions a bailer was used to remove oil when larger amounts of oil were found in the well
The length of time that the VER system was operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 was dependent upon observations made in the field The VER system was installed on one well operated on that well and oil flow into the well and other wells in the former TWA n area was measured After the test was completed at a well the VER system was moved to another well within the former TWA n area and the test was initiated again including monitoring for oil at each of the other wells This procedure was followed at each of the five wells At the end of each well test a table was generated that detailed the results of the test A preliminary trip report was also sent by CMP to both the USEPA and the MEDEP via electronic mail This allowed all interested parties to stay up to date with the VER system results The testing was moved to each of the five wells in the circuit until as much residual oil as practical was withdrawn by the VER system
CMP 205340 03 -5- 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
An itemized list of the procedure followed at each well was is presented below
1 Measure initial water levels and residual oil thickness in subject and adjacent wells 2 If necessary remove accumulated oil 3 Place suction cap apparatus on top of well and ensure that hose clamp was tight 4 Ensure liquid ring seal water reservoir had adequate water 5 Start VER pump 6 Set vacuum pressure utilizing air valve and adjacent vacuum gauge 7 Check suction cap apparatus for leaks 8 Allow operation of system for allotted time (variable based on observations) 9 Return to site measureremove recovered oil and 10 Move to next well in sequence Repeat procedures above
CMP 205340 03 -6shyO 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_ doc
12401
30 RESULTS
The results of the VER Phase m system operation between August 20 2001 and October 10 2001 are presented in this section Summary tables of VER system operation are presented and a discussion of the results is presented in Section 32 Appendix A contains detailed backup for the summary tables
31 VER OIL EXTRACTION SUMMARY
A summary of the VER operations conducted from August through October is presented in Table 1 below Table 1 presents the number of runs number of pulses range of pulse durations and range of applied vacuums at each well
Table 1 Summary of VER Operation
Range of Pulse Number of Number of Durations Range of Applied
Well ID Runs Pulses (hrs) Vacuums (in Hg) OW-302B 2 4 173-238 20
OW-202B 5 11 2 1 -18 2 10-20
OW-301B 2 3 173-239 5-20
OW-204B 1 2 34-47 5 - 12
RW-101 4 13 58-259 5-20 Notes 20 in Hg was vacuum applied during all runs
Table 2 documents each run including the total length of time for all pulses that vacuum was applied to each well total oil recovered and start and end dates The amount of oil recovered for each run at the vacuum well is highlighted Maximum oil recovery at each well occurred when the vacuum was applied to that well with the exception of RW-101 The maximum amount of oil recovered at this well occurred when a vacuum was applied to OW-302B Lesser amounts of oil were recovered in some wells when the vacuum was being applied to other wells in the TWA-II area The amount of oil recovered passively between December 1997 and the commencement of VER Phase HI in August 2001 is 694 gallons A total of 1981 gallons were recovered during this VER operation compared to 28 gallons collected during Phase I and Phase n VER operation The total oil recovered using VER and passive recovery is 5475 gallons
CMP 20534003 -7shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
The VER Phase III system was proposed for the four bedrock wells OW-202B OW-204B OW-301B and OW-302B and the VER recovery well (RW-101) located in TWA II (Figure 2) in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows contaminants are not migrating in the groundwater and contamination levels are not increasing PCBs have not been detected in any Management of Migration (MOM) monitoring wells since the spring of 1996 The groundwater data from the site indicates contaminants have stagnated in the tillbedrock migration pathway A detailed history of MOM Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997
CMP 20534003 -4shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
20 VER SYSTEM METHODOLGY
This section presents the purpose and methodology for Phase in operation of the VER system The VER system was operated at the O Connor Site as described in the Long-Term Groundwater Quality Monitoring Program and Phase HI Vacuum Enhanced Recovery of Oil Work Plan submitted to the USEPA and MEDEP in July of 2001
21 PURPOSE
The purpose of the VER Phase HI program was to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA n since Source Control with no enhancement to the gradient around the well The VER system operation created a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down
22 SYSTEM OPERATION
A vacuum was applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system was operated on one well at a time The operation of the VER system used components of the original VER system to the greatest extent possible The five wells were monitored daily for oil and water table elevation during operation of the VER
The top of the well to which the vacuum was to be applied was sealed and equipped with a vacuum line and vacuum gauge The vacuum pressure was set by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump was recirculated using a small (-15 gallons) seal water reservoir The volume of oil recovered was expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps were predominately used On two (2) occasions a bailer was used to remove oil when larger amounts of oil were found in the well
The length of time that the VER system was operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 was dependent upon observations made in the field The VER system was installed on one well operated on that well and oil flow into the well and other wells in the former TWA n area was measured After the test was completed at a well the VER system was moved to another well within the former TWA n area and the test was initiated again including monitoring for oil at each of the other wells This procedure was followed at each of the five wells At the end of each well test a table was generated that detailed the results of the test A preliminary trip report was also sent by CMP to both the USEPA and the MEDEP via electronic mail This allowed all interested parties to stay up to date with the VER system results The testing was moved to each of the five wells in the circuit until as much residual oil as practical was withdrawn by the VER system
CMP 205340 03 -5- 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
An itemized list of the procedure followed at each well was is presented below
1 Measure initial water levels and residual oil thickness in subject and adjacent wells 2 If necessary remove accumulated oil 3 Place suction cap apparatus on top of well and ensure that hose clamp was tight 4 Ensure liquid ring seal water reservoir had adequate water 5 Start VER pump 6 Set vacuum pressure utilizing air valve and adjacent vacuum gauge 7 Check suction cap apparatus for leaks 8 Allow operation of system for allotted time (variable based on observations) 9 Return to site measureremove recovered oil and 10 Move to next well in sequence Repeat procedures above
CMP 205340 03 -6shyO 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_ doc
12401
30 RESULTS
The results of the VER Phase m system operation between August 20 2001 and October 10 2001 are presented in this section Summary tables of VER system operation are presented and a discussion of the results is presented in Section 32 Appendix A contains detailed backup for the summary tables
31 VER OIL EXTRACTION SUMMARY
A summary of the VER operations conducted from August through October is presented in Table 1 below Table 1 presents the number of runs number of pulses range of pulse durations and range of applied vacuums at each well
Table 1 Summary of VER Operation
Range of Pulse Number of Number of Durations Range of Applied
Well ID Runs Pulses (hrs) Vacuums (in Hg) OW-302B 2 4 173-238 20
OW-202B 5 11 2 1 -18 2 10-20
OW-301B 2 3 173-239 5-20
OW-204B 1 2 34-47 5 - 12
RW-101 4 13 58-259 5-20 Notes 20 in Hg was vacuum applied during all runs
Table 2 documents each run including the total length of time for all pulses that vacuum was applied to each well total oil recovered and start and end dates The amount of oil recovered for each run at the vacuum well is highlighted Maximum oil recovery at each well occurred when the vacuum was applied to that well with the exception of RW-101 The maximum amount of oil recovered at this well occurred when a vacuum was applied to OW-302B Lesser amounts of oil were recovered in some wells when the vacuum was being applied to other wells in the TWA-II area The amount of oil recovered passively between December 1997 and the commencement of VER Phase HI in August 2001 is 694 gallons A total of 1981 gallons were recovered during this VER operation compared to 28 gallons collected during Phase I and Phase n VER operation The total oil recovered using VER and passive recovery is 5475 gallons
CMP 20534003 -7shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
20 VER SYSTEM METHODOLGY
This section presents the purpose and methodology for Phase in operation of the VER system The VER system was operated at the O Connor Site as described in the Long-Term Groundwater Quality Monitoring Program and Phase HI Vacuum Enhanced Recovery of Oil Work Plan submitted to the USEPA and MEDEP in July of 2001
21 PURPOSE
The purpose of the VER Phase HI program was to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA n since Source Control with no enhancement to the gradient around the well The VER system operation created a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down
22 SYSTEM OPERATION
A vacuum was applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system was operated on one well at a time The operation of the VER system used components of the original VER system to the greatest extent possible The five wells were monitored daily for oil and water table elevation during operation of the VER
The top of the well to which the vacuum was to be applied was sealed and equipped with a vacuum line and vacuum gauge The vacuum pressure was set by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump was recirculated using a small (-15 gallons) seal water reservoir The volume of oil recovered was expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps were predominately used On two (2) occasions a bailer was used to remove oil when larger amounts of oil were found in the well
The length of time that the VER system was operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 was dependent upon observations made in the field The VER system was installed on one well operated on that well and oil flow into the well and other wells in the former TWA n area was measured After the test was completed at a well the VER system was moved to another well within the former TWA n area and the test was initiated again including monitoring for oil at each of the other wells This procedure was followed at each of the five wells At the end of each well test a table was generated that detailed the results of the test A preliminary trip report was also sent by CMP to both the USEPA and the MEDEP via electronic mail This allowed all interested parties to stay up to date with the VER system results The testing was moved to each of the five wells in the circuit until as much residual oil as practical was withdrawn by the VER system
CMP 205340 03 -5- 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
An itemized list of the procedure followed at each well was is presented below
1 Measure initial water levels and residual oil thickness in subject and adjacent wells 2 If necessary remove accumulated oil 3 Place suction cap apparatus on top of well and ensure that hose clamp was tight 4 Ensure liquid ring seal water reservoir had adequate water 5 Start VER pump 6 Set vacuum pressure utilizing air valve and adjacent vacuum gauge 7 Check suction cap apparatus for leaks 8 Allow operation of system for allotted time (variable based on observations) 9 Return to site measureremove recovered oil and 10 Move to next well in sequence Repeat procedures above
CMP 205340 03 -6shyO 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_ doc
12401
30 RESULTS
The results of the VER Phase m system operation between August 20 2001 and October 10 2001 are presented in this section Summary tables of VER system operation are presented and a discussion of the results is presented in Section 32 Appendix A contains detailed backup for the summary tables
31 VER OIL EXTRACTION SUMMARY
A summary of the VER operations conducted from August through October is presented in Table 1 below Table 1 presents the number of runs number of pulses range of pulse durations and range of applied vacuums at each well
Table 1 Summary of VER Operation
Range of Pulse Number of Number of Durations Range of Applied
Well ID Runs Pulses (hrs) Vacuums (in Hg) OW-302B 2 4 173-238 20
OW-202B 5 11 2 1 -18 2 10-20
OW-301B 2 3 173-239 5-20
OW-204B 1 2 34-47 5 - 12
RW-101 4 13 58-259 5-20 Notes 20 in Hg was vacuum applied during all runs
Table 2 documents each run including the total length of time for all pulses that vacuum was applied to each well total oil recovered and start and end dates The amount of oil recovered for each run at the vacuum well is highlighted Maximum oil recovery at each well occurred when the vacuum was applied to that well with the exception of RW-101 The maximum amount of oil recovered at this well occurred when a vacuum was applied to OW-302B Lesser amounts of oil were recovered in some wells when the vacuum was being applied to other wells in the TWA-II area The amount of oil recovered passively between December 1997 and the commencement of VER Phase HI in August 2001 is 694 gallons A total of 1981 gallons were recovered during this VER operation compared to 28 gallons collected during Phase I and Phase n VER operation The total oil recovered using VER and passive recovery is 5475 gallons
CMP 20534003 -7shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
An itemized list of the procedure followed at each well was is presented below
1 Measure initial water levels and residual oil thickness in subject and adjacent wells 2 If necessary remove accumulated oil 3 Place suction cap apparatus on top of well and ensure that hose clamp was tight 4 Ensure liquid ring seal water reservoir had adequate water 5 Start VER pump 6 Set vacuum pressure utilizing air valve and adjacent vacuum gauge 7 Check suction cap apparatus for leaks 8 Allow operation of system for allotted time (variable based on observations) 9 Return to site measureremove recovered oil and 10 Move to next well in sequence Repeat procedures above
CMP 205340 03 -6shyO 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_ doc
12401
30 RESULTS
The results of the VER Phase m system operation between August 20 2001 and October 10 2001 are presented in this section Summary tables of VER system operation are presented and a discussion of the results is presented in Section 32 Appendix A contains detailed backup for the summary tables
31 VER OIL EXTRACTION SUMMARY
A summary of the VER operations conducted from August through October is presented in Table 1 below Table 1 presents the number of runs number of pulses range of pulse durations and range of applied vacuums at each well
Table 1 Summary of VER Operation
Range of Pulse Number of Number of Durations Range of Applied
Well ID Runs Pulses (hrs) Vacuums (in Hg) OW-302B 2 4 173-238 20
OW-202B 5 11 2 1 -18 2 10-20
OW-301B 2 3 173-239 5-20
OW-204B 1 2 34-47 5 - 12
RW-101 4 13 58-259 5-20 Notes 20 in Hg was vacuum applied during all runs
Table 2 documents each run including the total length of time for all pulses that vacuum was applied to each well total oil recovered and start and end dates The amount of oil recovered for each run at the vacuum well is highlighted Maximum oil recovery at each well occurred when the vacuum was applied to that well with the exception of RW-101 The maximum amount of oil recovered at this well occurred when a vacuum was applied to OW-302B Lesser amounts of oil were recovered in some wells when the vacuum was being applied to other wells in the TWA-II area The amount of oil recovered passively between December 1997 and the commencement of VER Phase HI in August 2001 is 694 gallons A total of 1981 gallons were recovered during this VER operation compared to 28 gallons collected during Phase I and Phase n VER operation The total oil recovered using VER and passive recovery is 5475 gallons
CMP 20534003 -7shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
30 RESULTS
The results of the VER Phase m system operation between August 20 2001 and October 10 2001 are presented in this section Summary tables of VER system operation are presented and a discussion of the results is presented in Section 32 Appendix A contains detailed backup for the summary tables
31 VER OIL EXTRACTION SUMMARY
A summary of the VER operations conducted from August through October is presented in Table 1 below Table 1 presents the number of runs number of pulses range of pulse durations and range of applied vacuums at each well
Table 1 Summary of VER Operation
Range of Pulse Number of Number of Durations Range of Applied
Well ID Runs Pulses (hrs) Vacuums (in Hg) OW-302B 2 4 173-238 20
OW-202B 5 11 2 1 -18 2 10-20
OW-301B 2 3 173-239 5-20
OW-204B 1 2 34-47 5 - 12
RW-101 4 13 58-259 5-20 Notes 20 in Hg was vacuum applied during all runs
Table 2 documents each run including the total length of time for all pulses that vacuum was applied to each well total oil recovered and start and end dates The amount of oil recovered for each run at the vacuum well is highlighted Maximum oil recovery at each well occurred when the vacuum was applied to that well with the exception of RW-101 The maximum amount of oil recovered at this well occurred when a vacuum was applied to OW-302B Lesser amounts of oil were recovered in some wells when the vacuum was being applied to other wells in the TWA-II area The amount of oil recovered passively between December 1997 and the commencement of VER Phase HI in August 2001 is 694 gallons A total of 1981 gallons were recovered during this VER operation compared to 28 gallons collected during Phase I and Phase n VER operation The total oil recovered using VER and passive recovery is 5475 gallons
CMP 20534003 -7shy 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
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32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
32 DISCUSSION
The VER Phase HI system operated from August 20 2001 to October 10 2001 The system was operated during a time of a seasonally low water table at the site after an extended period with no significant recharge events Low water tables have been linked with increased recoveries of oil at the site in the past
The pulsing of the VER system removed an additional 198 gallons of oil from the bedrock subsurface soils at the site In the cases of wells OW-301B and OW-302B the majority of the oil was recovered during the initial pulse of the well on which the VER was operating The recovery of oil in the wells OW-202B and RW-101 fluctuated between higher and lower recovered amounts During approximately 4 weeks after the VER was shut down oil was found in OW-302B where oil had not been found during the operation of the VER with the exception of the first applied vacuum to that well On October 30 twenty days after the shutdown 391 gallons of oil was found in the well On November 8 an additional 051 gallons was found in and removed from the well Well OW-204B did not recover significant amounts of oil during the operation of the VER When the VER system was operated on this well oil was not induced to flow to this well
The results of the VER operation confirm the conceptual understanding that residual oil residing at the top of the water table and within the till bedrock interface was pulled deeper into the bedrock during the 1992 pumping tests at the site The oil resides within the bedrock fractures surrounding the wells that were pumped and that had oil at the water table and within the till bedrock interface (OW-202B OW-302B RW-101 and OW-301B area refer to Figure 1) Based on the recovery of oil and the pulsing history of the wells it appears that wells with an induced gradient in any of the bedrock wells can cause a small accumulation of oil in RW-101 This indicates that the gradient induced from a vacuum in the bedrock wells is felt in the tillbedrock migration zone strong enough to move residual oil in the overburden It is also possible from the decreasing quantities of oil collected in RW-101 that surface tension forces within the overburden were becoming more and more dominate allowing less and less oil to move as an immiscible fluid in multiphase flow
In the bedrock flow system it appears that OW-301B and OW-302B behave very similarly and differently from the behavior of OW-202B OW-202B shows small amounts of oil accumulation more frequently while OW-301B and OW-302B show dramatic responses and no small accumulations It is possible that OW-202B being the highest producing well of all the wells on site has significantly more fractures and thus significantly more fracture zones in which residual oil can reside Historically OW-202B has had the most oil removed (-41 gallons) while OW-301B and OW-302B have had 22 and 16 gallons respectively It is likely that the fracture frequency fracture aperture width pumping history and oil withdrawal history are responsible for the observed oil collected under a passive or aggressive collection scheme
Future use of the VER system will continue based on the results of monitoring and criteria to be established during development of the TI waiver
CMP 20534003 -9shy 12401 O 205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
APPENDIX A
VER OPERATIONAL DATA
CMP 20534003 12401 O205340 CMP OConner Superfund SitewipVER ReportVERreport_v2_doc
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 1 Vacuum Well OW-302B Run on Well 1
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO 2308 2430 2673
DTW 2313 2440 2198 2148 2755 Oil Depth (ft) 005 01 0 0 082
Gallons Oil 003 006 000 000 053
1 Start 82001 1530 DTO 2343 2836 End 82101 845 DTW 2346 2450 2205 2204 3568 Duration (h rs) 173 Oil Depth (ft) 003 0 0 0 732 Vacuum 20 inHg Gallons Oil 002 000 000 000 468
Reading 82201 1455 DTO DTW 2403 2481 2211 2234 2965
Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum 0 InHg Gallons Oil 000 000 000 000 000
2 Start 82201 1455 DTO 2397 2454 2571 End 82301 810 DTW 2402 2459 2227 2226 2644 Duration (h rs) 173 Oil Depth (ft) 005 005 0 0 073 Vacuum 20 InHg Gallons Oil 003 003 000 000 047
3 Start 82301 1600 DTO 2410 2481 2604 End 82401 1550 DTW 2413 2482 2245 2238 2605 Duration (h rs) 238 Oil Depth (ft) 003 001 0 0 001 Vacuum 20 inHg Gallons Oil 002 001 000 000 001
Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 010 010 000 000 568 Tota I Durationof Pumping 583 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Duration time of first pulse is estimated as vacuum pump seal water was depleted during run and
no vacuum was being applied to well when system was checked on 821
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
2 OW-202B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2432 0
000
OW-202B OW-204B OW-301B
2540 0
000
2256 0
000
2288 0
000
OW302B
2965 0
000
1 Start End Duration (h Vacuum
82701 82701
rs) 20
1015 1530 53
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2417 0
000
2218 2339 121 077
2303 0
000
2325 0
000
2797 0
000
2 Start End Duration (h Vacuum
82701 82801
rs) 20
1550 1002 182
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2401 2402 001 001
2341 2466 125 080
2411 0
000
2320 0
000
2737 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Durationof Pumping
001 235
080 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Oil not removed from OW-202B after first pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
3 RW-101
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2466 0
000
OW-202B2686 2687 001 001
OW-204B OW-301B
2399 0
000
2312 0
000
OW302B
2859 0
000
1 Start End Duration (h Vacuum
82801 82901
rs) 20
1550 720 155
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
1912 1974 062 040
2548 2549 001 001
2462 0
000
2356 0
000
2868 0
000
2 Start End Duration (h Vacuum
82901 82901
rs) 20
800 1615 83
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
1845 1881 036 023
2535 0
000
2458 0
000
2352 0
000
2857 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
063 238
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
4 OW-202B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1849 0
000
OW-202B
2535 0
000
OW-204B
2458 0
000
OW-301B
2352 0
000
OW302B
2857 0
000
1 Start End Duration (h Vacuum
82901 83001
rs) 20
1700915162
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2422 0
000
2344 2354 01 006
2461 0
000
2351 0
000
2737 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 162
006 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SG=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
5 RW-101
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2422 0
000
OW-202B
2345 0
000
OW-204B OW-301B
2461 0
000
2351 0
000
OW302B
2737 0
000
1 Start End Duration (h Vacuum
83001 83001
rs) 20
945 1530 58
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
1908 1928 02
013
2558 0
000
2480 0
000
2372 0
000
2867 0
000
Start End Duration (h Vacuum
rs) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
013 58
000 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in OW-202B estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
1910 0
000
OW-202B OW-204B
2558 0
000
2480 0
000
OW-301B
2372 0
000
OW302B
2867 0
000
Start End Duration (hrs Vacuum
83001 83101
rs)) 20
1600 1330 215
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2460 2672 212 136
2550 0
000
2480 0
000
2336 0
000
2693 0 bull
000
Start End Duration (hrs Vacuum
rs)) InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (hrs Vacuum
rs)) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
136 215
000Hours
| 000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Initial water measurement in RW-101 estimated from DTW and SP=9 for oil
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Readings DTO 2499 2720
DTW 2511 2721 2510 2426 2910 Oil Depth (ft) 012 001 0 0 0
Gallons Oil 008 001 000 000 000
Start 9401 945 DTO 1996 End 9501 900 DTW 2052 2573 2522 2467 2880 Duration (hrsrs)) 233 Oil Depth (ft) 056 0 0 0 0 Vacuum 20 in Hg Gallons Oil 036 000 000 000 000
Start DTO 2410 End DTW 2419 2644 2501 2472 2856 Duration (hrs) Oil Depth (ft) 009 0 0 0 0 Vacuum Gallons Oil 006 000 000 000 000
Start DTO 2070 End DTW 2078 2583 2530 2518 2889 Duration (hrs) Oil Depth (ft) 008 0 0 0 0 Vacuum Gallons Oil 005 000 000 000 000
Start DTO 1940 End DTW 1952 2603 2531 2534 2918 Duration (hrs) Oil Depth (ft) 012 0 0 0 0 Vacuum Gallons Oil 008 000 000 000 000
Start DTO End DTW Duration (hrsrs)) Oil Depth (ft) 0 0 0 0 0 Vacuum in Hg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 062 001 | 000 000 000 Total Duration of Pumping 739 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
8 OW-301B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012527 2541 014 009
OW-202B OW-204B OW-301B2779 2780 001 001
2562 0
000
2629 0
000
OW302B
2968 0
000
1 Start End Duration (h Vacuum
91001 91101
rs) 20
915 910 239
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 2543 004 003
2745 2749 004 003
2578 0
000
1803 2518 715 457
2946 0
000
2 Start End Duration (h Vacuum
91101 91201
rs) 20
1515 1035 193
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2552 2553 001 001
2775 2778 003 002
2592 0
000
2115 0
000
2975 0
000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
012 432
005 Hours
000 457 000
Comments Oil Volume calculated from depth
after measurements to remove oil before of oil in well and well diameter (4) Socks placed in wells starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
9 OW-204B
1
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012552 2553 001 001
OW-202B2775 2778 003 002
OW-204B
2592 0
000
OW-301B
2115 0
000
OW302B
2975 0
000
1 Start End Duration (h Vacuum
91201 91201
rs) 12
1145 1630 47
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2558 2559 001 001
2805 2809 004 003
2551 0
000
2753 2758 005 003
2999 0
000
2 Start End Duration (h Vacuum
91301 91301
rs) 5
1300 1625 34
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2562 0
000
2808 0
000
2389 0
000
2772 0
000
3002 0
000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Tota I Duration of Pumping
001 82
005 Hours
000 003 000
Comments Oil Volume calculated from depth
after measurements to remove oil before Smaller vacuum applied (5 in Hg)
of oil in well and well diameter (4) Socks placed in wells starting next pulse to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
10 OW-301B
2
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2562 0
000
OW-202B
2808 0
000
OW-204B
2389 0
000
OW-301B
2772 0
000
OW302B
3002 0
000
1 Start End Duration (h Vacuum
91301 91401
rs) 5
17001020173
in Hg
DTO DTW Oil Depth (ft)
Gallons Oil
2582 0
000
2819 2821 002 001
2565 0
000
2594 0
000
3015 0
000
Start End Duration (h Vacuum
rs) In Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration (h Vacuum
rs) in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
000 173
001 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Smaller vacuum applied (5 in Hg) to avoid significant lifting of water column
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
11(pg1) OW-202B
3
Pulse 0 Initial Read ings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-1012601 2602 001 001
OW-202B OW-204B2842 2852 01 006
2856 0
000
OW-301B2840 2841 001 001
OW302B
3033 0
000
1 Start End Duration (h Vacuum
91701 91701
rs) 20
945 1225 27
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2585 0
000
2803 2837 034 022
2576 0
000
2833 0
000
2995 0
000
2 Start End Duration (h Vacuum
91701 91701
rs) 20
1510 1715 21
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2606 0
000
2843 2860 017 011
2629 0
000
2853 0
000
3027 0
000
3 Start End Duration (h Vacuum
91801 91801
rs) 20
1010 1215 21
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2591 0
000
2793 2797 004 003
2606 0
000
2850 0
000
2971 0
000
4 Start End Duration (h Vacuum
91801 91801
rs) 20
1415 1615 20
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2620 2622 002 001
2857 2865 008 005
2655 0
000
2871 0
000
3029 0
000
5 Start End Duration (h Vacuum
91901 91901
rs) 20
900 1125 24
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2607 0
000
2834 2838 004 003
2620 0
000
2860 0
000
3004 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No Vacuum Well Run on Well
n(pg2) OW-202B
3
Pulse 6 Start
End Duration Vacuum
91901 91901
1340 1600 23
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
RW-1012633 2634 001 001
OW-202B 2863 2866 003 002
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
7 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
8 Start End Duration Vacuum InHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
9 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
10 Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
11 Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
003 136
051Hours
| 000 001 | 000 |
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for this run
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No Vacuum Well Run on Well
12 (pg 1) RW-101
4
Pulse 0 Initial Readings DTO
DTW Oil Depth (ft)
Gallons Oil
RW-101
2633 0
000
OW-202B
2863 0
000
OW-204B
2667 0
000
OW-301B
2886 0
000
OW302B
3031 0
000
Start End Duration (hrs Vacuum
92001 92101
rs)) 5
935 1130 259
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 shy000
DTO DTW
Oil Depth (ft) Gallons Oil
2611 2614 003 002
2871 2872 001 001
2673 0
000
2898 0
000
3037 0
000
Reading
Duration (hrs Vacuum
92701
rs))
1420
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2644 2659 015 010
2849 0
000
2649 0
000
2888 0
000
3018 0
000
Start End Duration (hrs Vacuum
92701 92801
rs)) 20
1500 700 160
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
2504 0
000
2852 0
000
2657 0
000
2879 0
000
3015 0
000
Start End Duration (hrs) Vacuum
DTO DTW
Oil Depth (ft) Gallons Oil
2640 2645 005 003
2860 0
000
2658 0
000
2895 0
000
3034 0
000
Total Gallons of Oil Removed Total Duration of Pumping Hours
I I I
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse After vacuum shut off wells allowed to stabilize until 924 before being measured Wells allowed to
rest without vacuum being applied Surgingbubbling noise heard from OW-202B during vacuuming - assumed to be caused bywater
level in well near base of casing - noise stopped when tight cap placed over OW-202B
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustSeptember 2001
Run No 12 (pg 2) Vacuum Well RW-101 Run on Well 4
Pulse Reading
Duration Vacuum
10301 830
in Hg
DTO DTW
Oil Depth (ft) Gallons Oft
RW-1012606 2609 003 002
OW-202B
2862 0
000
OW-204B
2664 0
000
OW-301B
2905 0
000
OW302B
3036 0
000
4 Start End Duration Vacuum
10301 10301
10
830 1630 80
inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Reading
Duration Vacuum
10401 715
InHg
DTO DTW
Oil Depth (ft) Gallons Oil
2539 0
000
2862 0
000
2665 0
000
3026 0
000
2904 0
000
Reading
Duration Vacuum
10901 800
in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
2713 2718 005 003
2914 2916 002 001
2713 0
000
2963 0
000
3084 0
000
Start End Duration Vacuum in Hg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Start End Duration Vacuum inHg
DTO DTW
Oil Depth (ft) Gallons Oil
0 000
0 000
0 000
0 000
0 000
Total Gallons of Oil Removed Total Duration of Pumping
020 554
002 Hours
000 000 000
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse Pulsing changed to short vacuum times at large vacuum (20 in Hg) for initial pulses on this run
later changed to moderate vacuum (10 in Hg) for final pulses
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
OConnor Site Vacuum Enhanced Recovery (VER) Operation
AugustOctober 2001
Run No 13 Vacuum Well OW-202B Run on Well 4
Pulse RW-101 OW-202B OW-204B OW-301B OW302B 0 Initial Read ings DTO
DTW 2713 2914 2713 2963 3084 Oil Depth (ft) 0 0 0 0 0
Gallons Oil 000 000 000 000 000
1 Start 10901 900 DTO 2742 End 10901 1505 DTW 2720 2745 2708 2968 2993 Duration (h rs) 61 Oil Depth (ft) 0 003 0 0 0 Vacuum 10 in Hg Gallons Oil 000 002 000 000 000
2 Start 101001 750 DTO 2712 End 101001 1435 DTW 2715 2719 2718 2974 2990 Duration (h rs) 68 Oil Depth (ft) 0 007 0 0 0 Vacuum 10 InHg Gallons Oil 000 005 000 000 000
3 Reading 103001 800 DTO 2762 2963 3068 DTW 2767 2991 2760 3016 3679
Duration (h rs) Oil Depth (ft) 005 028 0 0 611 Vacuum in Hg Gallons Oil 003 018 000 000 391
4 Reading 11801 1230 DTO 3080 DTW 3160
Duration (h rs) Oil Depth (ft) 0 0 0 0 08 Vacuum inHg Gallons Oil 000 000 000 000 051
5 Start DTO End DTW Duration (h rs) Oil Depth (ft) 0 0 0 0 0 Vacuum inHg Gallons Oil 000 000 000 000 000
Total Gallons of Oil Removed 003 024 000 000 442 Total Duration of Pumping 128 Hours
Comments Oil Volume calculated from depth of oil in well and well diameter (4) Socks placed in wells
after measurements to remove oil before starting next pulse
12301
