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National Aeronautics and Space Administration
Lyndon B. Johnson Space Center White Sands Test Facility P.O. Box 20 Las Cruces, NM 88004-0020
Reply to Attn of: RE-18-180
Mr. John E. Kieling, Chief
December 21, 2018
New Mexico Environment Department Hazardous Waste Bureau 2905 Rodeo Park Drive East, Building 1 Santa Fe, NM 87505
Subject: Abbreviated Investigation Work Plan for Groundwater Data Representativeness, Phase 1: FLUTe Well Evaluation
In the October 4, 2017 Approval with Modifications Detections of NDMA and TCE in WSTF Groundwater Monitoring Wells BLM-30, PL-5, PL-6, PL-7, PL-8, PL-10, St-5, and WW-3, NMED directed NASA to submit a work plan for evaluating the representativeness of monitoring well sampling data by April 30, 2018. While developing the required work plan in early 2018, NASA continued to collect comprehensive groundwater samples and evaluate chemical analytical data. NASA observed detections of 1,4-dioxane in several Water FLUTe wells by SW-846 Method 8260C. Preliminary data indicated that 1,4-dioxane contamination may be present in Water FLUTe systems. On April 25, 2018, NASA recommended immediate 1,4-dioxane sampling at several wells with Water FLUTe systems with subsequent analysis using SW-846 Method 8270D with selective ion monitoring to more effectively quantify concentrations of 1,4-dioxane in Water FLUTe wells. NASA also requested additional time in which to prepare and submit the required work plan for
· evaluating data representativeness. NMED approved the request on May 15, 2018 and extended the due date for submittal of the groundwater data representativeness evaluation work plan to December 31, 2018.
Enclosed is the required groundwater data representativeness evaluation work plan. This submittal includes a paper copy of the Abbreviated Investigation Work Plan as Enclosure 1 and a CD-ROM with the work plan in PDF as Enclosure 2.
I certify under penalty of law that this document and all .attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
RE-18-180
If you Ii.ave any questions or comments concerning this submittal, please contact Mike Zigmond at 575-524-5484.
~\tr Timothy J. Davis Chief, Environmental Office
2 Enclosures
cc: Mr. Gabriel Acevedo Hazardous Waste Bureau New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, NM 87505
2
National Aeronautics and Space Administration
Abbreviated Investigation Work Plan
Groundwater Data Representativeness
Phase 1: Water FLUTe Well Evaluation
December 2018
NM8800019434
Abbreviated Investigation Work Plan Groundwater Data Representativeness
Phase 1: Water FLUTe Well Evaluation
December 2018
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best ofmy knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
~J.Davis Chief, NASA Envirnnmental Office
National Aeronautics and Space Administration
Johnson Space Center White Sands Test Facility 12600 NASA Road Las Cruces, NM 88012 www.nasa.gov/ centers/wstf
www.nasa.gov
Date
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 3
Abbreviated Investigation Work Plan for
Groundwater Data Representativeness
Phase 1: Water FLUTe Well Evaluation
Issue and
Regulatory
Background
In 2013, NASA began a campaign to replace Westbay®1 multiport sampling
systems in several monitoring wells with sampling systems capable of being
purged. To date, NASA has identified and installed two purgeable sampling
systems believed to be capable of providing high quality, representative
groundwater samples: dual-zone dedicated bladder pump systems and Water
FLUTe™ (Flexible Liner Underground Technologies) multilevel groundwater
monitoring systems. NASA has collected groundwater samples from each
reconfigured monitoring well since installation, typically on a quarterly
schedule. NASA evaluates groundwater chemical analytical data on an
ongoing basis and has observed inconsistencies in data from samples collected
from Westbay systems and samples collected from the replacement Water
FLUTe systems. Of primary consideration are initial and ongoing detections of
several SVOC (semi-volatile organic compounds), including low
concentrations of NDMA (N-nitrosodimethylamine), as well as more recent
detections of 1,4-dioxane. Although Water FLUTe wells are purged prior to
sample collection, purge volume is somewhat limited by the small diameter
purge/sample tubing and time required to perform purging. As a result, the
potential exists for groundwater samples collected with the Water FLUTe
system to be impacted by components of the system that are in close and long-
term contact with groundwater.
Several NASA submittals and related NMED (New Mexico Environment
Department) responses (discussed below) include various requirements related
to Westbay sampling system replacement and groundwater data
representativeness. In order to address these issues, NASA recommends a
phased work approach.
On November 19, 2010, NASA submitted the NASA WSTF Westbay Well
Evaluation Work Plan (NASA, 2010) that described work necessary to
evaluate the representativeness of chemical analytical results from
groundwater samples collected at WSTF monitoring wells equipped with
Westbay sampling systems. The NMED HWB (Hazardous Waste Bureau)
approved the work plan on January 14, 2011 (NMED, 2011a) and NASA
subsequently performed fieldwork in accordance with the work plan and
reported the results of the evaluation to NMED on October 20, 2011 (NASA,
2011). NMED approved the investigation report with modifications on
December 16, 2011 (NMED, 2011b) and required NASA to convert eight
existing Westbay monitoring wells to wells containing purgeable sampling
systems. NASA submitted the required Westbay Well Conversion Work Plan
on November 1, 2012 (NASA, 2012) and NMED approved the work plan on
January 16, 2013 (NMED, 2013). NASA completed the conversions of the
first two wells in December 2013 and submitted the Well Completion Report
for the Conversion of Westbay Wells WW-2 and JP-3 on December 16, 2013
(NASA, 2013). The Westbay sampling systems in these wells were replaced
with dedicated dual-zone low-flow bladder pump systems. NASA
1 Westbay is a registered trademark of Nova Metrix, LLC.
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 4
subsequently replaced the Westbay sampling systems in monitoring wells
BLM-32, WW-4, and WW-5 (NASA, 2016) and wells JER-1, JER-2, ST-6,
and ST-7 (NASA, 2017a) with Water FLUTe sampling systems. In 2016 and
early 2017, NASA drilled and installed new groundwater monitoring well PL-
11 (NASA, 2017b) and equipped the well with a Water FLUTe sampling
system.
On March 29, 2016, NMED approved NASA’s January 27, 2016 NASA WSTF
Periodic Monitoring Report – Fourth Quarter 2015 with a comment
expressing uncertainty about the source of detections of in groundwater
monitoring wells BLM-30, PL-6, PL-7, PL-8, PL-10, ST-5, and WW-3 during
2015 (NMED, 2016a). In response, NASA provided an evaluation of NDMA
results from the identified wells and requested an extension of time for
submittal of the NMED-required reconfiguration work plan for the wells
(NASA, 2017c). On October 4, 2017, NMED approved NASA’s submittal
with modifications (NMED, 2017). NMED Modification 1 required NASA to
evaluate monitoring well sampling data. While developing the required data
representativeness work plan, NASA continued to collect comprehensive
groundwater samples and evaluate chemical analytical data. NASA continued
to observe detections of SVOC in samples from Water FLUTe sampling
systems, including NDMA and several tentatively identified compounds that
may interfere with the analysis of WSTF groundwater contaminants. NASA
also observed detections of 1,4-dioxane in several Water FLUTe wells by SW-
846 Method 8260C. Preliminary data indicated that 1,4-dioxane contamination
may be present in Water FLUTe systems, as sampling performed at the
groundwater remediation systems indicates that 1,4-dioxane is not a WSTF
groundwater contaminant. In the April 25, 2018 Request for Extension of Time
for NASA WSTF Monitoring Well Groundwater Data Representativeness Work
Plan (NASA, 2018), NASA recommended immediate 1,4-dioxane sampling at
several wells with Water FLUTe systems with subsequent analysis using SW-
846 Method 8270D with selective ion monitoring to more effectively quantify
concentrations of 1,4-dioxane in Water FLUTe wells. NASA also requested
additional time in which to prepare and submit the required work plan for
evaluating data representativeness. NMED approved the request on May 15,
2018, pointing out that “…additional data will be used to confirm recently
reported 1,4-dioxane concentrations in several groundwater monitoring wells
equipped with Water FLUTe sampling systems and provide additional
information for system evaluation” (NMED, 2018).
During 2018, NASA continued to collect samples for the analysis of SVOC,
including NDMA and 1,4-dioxane, from several Water FLUTe wells.
Chemical analytical data indicate a correlation between the Water FLUTe
sampling system and detections of 1,4-dioxane and several tentatively
identified SVOC, leading NASA to conclude that the contamination may be
originating with the sampling system. To verify this, NASA proposes that the
first phase of an evaluation of groundwater data representativeness be
comprised of an evaluation of a Water FLUTe monitoring well to determine if
the sampling system is the source of SVOC, including NDMA and 1,4-
dioxane.
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 5
Primary Purpose The purpose of this AIWP (Abbreviated Investigation Work Plan) is to
describe the first phase of an evaluation of the representativeness of
groundwater chemical analytical data from WSTF groundwater monitoring
wells as required by NMED (2017). In order to evaluate the representativeness
of groundwater data from samples collected at a Water FLUTe well, NASA
will compare data from several recent sampling events at Water FLUTe well
WW-4 (Figure 1) to data from samples collected from the monitoring well
after the Water FLUTe system is removed. The primary objective is to
determine if the detections of SVOC at the four sampling zones in well WW-4
(Figure 2) are representative of groundwater at that location or the result of
contamination introduced by the Water FLUTe sampling system.
Conceptual Model Monitoring well WW-4 is located approximately three miles west of the
WSTF test areas near the western site boundary within the JDMB (Jornada del
Muerto Basin). Well WW-4 was originally placed in its location to provide
additional groundwater analytical information to assist with delineation of the
WSTF TCE (trichloroethene) plume, the location of (then) proposed extraction
well PFE-7, and to provide a groundwater monitoring point between
contaminated monitoring well ST-6 and the NASA supply wells. Well WW-4
has historically served as a key component of WSTF’s sentinel well group, the
distal tier of groundwater monitoring wells located between the WSTF Plume
Front Area to the east and the NASA supply wells to the west. Well WW-4 is
located approximately 1,500 ft (feet) west of the leading edge of the
conceptualized groundwater contaminant plume and east of the WSTF water
supply wells (Figure 1). The well provides horizontal and vertical definition
within the local aquifer as part of the WSTF monitoring network and acts as a
sentinel downgradient of the contaminant plume.
Surficial soils within the JDMB in the vicinity of well WW-4 include stony
loams and sandy loams associated with alluvial fans, arroyos, and gentle slopes
that range from zero to 15% that dip west toward the basin axis. Runoff ranges
from slow to rapid, and permeability is slow to moderately rapid. The DR
(Dona Ana-Reagan) Association predominates within the area (USDA SCS,
1980). The Dona Ana Series consists of deep, well-drained soils that formed in
mixed alluvium on fans and piedmonts. The Reagan Series consists of well-
drained alluvial soils that formed on basin floors. Calcium carbonate
concentrations typically range from 15 to 40%.
Within the subsurface, the well WW-4 lithologic log indicates alluvium of the
Late Pliocene to Quaternary Santa Fe Group extends from ground surface to a
depth of 580 ft bgs (below ground surface). The alluvium typically comprises a
poorly to moderately cemented silty sandy gravel, with clasts ranging from
pebbles to cobbles in size composed primarily of Paleozoic sedimentary rocks
with some Tertiary volcanic rocks. Relatively thin caliche horizons, clay lenses
and carbonate-cemented zones from a few inches to several feet in thickness
occur sporadically. At depth from 580 ft bgs to the total depth of the WW-4
borehole at 1,020 ft bgs, volcanic-rich Alluvium of Late Pliocene age is
reported. Volcanic-rich alluvium similarly comprises a poorly to moderately
cemented silty sandy gravel with pebble to cobble-sized clasts. Individual
clasts are composed predominantly of Tertiary volcanic rocks. The lithologic
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 6
boundary in alluvium is best defined by a slight shift (increase) in the borehole
geophysical gamma log at 580 ft bgs.
The depth to groundwater in the vicinity of well WW-4 was approximately
375 ft bgs when the well was first installed in 2001, and this piezometric level
had declined to approximately 390 ft bgs by 2015. Because well WW-4 is
located outside and to the west of the groundwater divide corresponding to
drawdown of the water table created through pumping of the WSTF Plume
Front extraction wells, the 15 ft decline in water level within WW-4 is
attributable to regional declines within the JDMB observed over the same time
period. The local aquifer is classified as unconfined. Historical water level data
from the Westbay multiport well previously installed at the well WW-4
location indicate the presence of a single alluvial hydrostratigraphic unit and a
slightly downward vertical gradient.
Investigation
Approach
The first phase of the required data representativeness evaluation is the
collection and analysis of groundwater samples from well WW-4 that have not
been impacted by the current Water FLUTe sampling system, and comparison
of those data to historical data from sampling performed through the Water
FLUTe system. This first phase consists of three primary steps: collection of
initial groundwater samples from the Water FLUTe system; removal of the
Water FLUTe system; isolation of the four screened intervals in well WW-4
and purging and sampling of groundwater from each zone; and comparison of
data from samples collected during purging to available data from previous
sampling events performed using the Water FLUTe and Westbay sampling
systems.
Initial Water FLUTe Sampling
In the month prior to removal of the Water FLUTe system from well WW-4,
NASA will collect groundwater samples for analysis of the compounds of
interest from each of the four sample zones in the well’s Water FLUTe
sampling system using the established sampling process. Analytical data from
these samples will finalize the dataset representing the Water FLUTe system in
this well. The final dataset will serve as a baseline to which subsequent data
will be compared.
Water FLUTe System Removal
After the groundwater sampling has been completed, NASA will retrieve the
Water FLUTe system from well WW-4 using the tether support or recovery
line while pumping water from the previously everted flexible liner. NASA
will sample this water, which has resided within the liner since installation in
late 2015, for the compounds of interest for this evaluation. The liner and
tubing bundle will be rolled onto an appropriately sized reel provided by a
qualified off-site contractor or acquired by NASA for use during this test. The
reel will be packaged to maintain the integrity of the sampling system in the
event of potential reuse. Following removal of the Water FLUTe system,
NASA will perform a camera log of the conventional monitoring well casing
to verify its integrity prior to groundwater purging.
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 7
Groundwater Purging and Sampling
Following removal of the Water FLUTe sampling system, each of the four
screened intervals in well WW-4 (Figure 2) will be sampled for the target
analytes. NASA expects to contract the services of an off-site contractor to
support groundwater purging operations. Using equipment provided by the
contractor, each screened interval will be isolated from others in the well
casing to prevent vertical mixing within the casing. A submersible pump
provided by the contractor will be placed within or immediately adjacent to
each isolated screened interval. The configuration of screen isolation and
purging equipment will be determined during the competitive procurement
process for the required off-site contractor services. Downhole equipment
provided by the off-site contractor will be decontaminated using a high
temperature pressure washer prior to deployment in well WW-4.
When the screened interval is isolated, the purge pump will be activated to
initiate groundwater extraction from the targeted well screen. The contractor
will operate the purge pump until a volume approximately equal to the volume
of the pump drop pipe has been purged. NASA will then collect a set of
groundwater samples for measurement of indicator parameters and analysis for
the compounds of interest. These samples are expected to represent the
groundwater in the annular space outside of the conventional well casing,
which may have been impacted by the Water FLUTe system. NASA will
continue purging each screened interval and will periodically measure
indicator parameters and collect groundwater samples. It is expected that field
measurements and sampling will be performed following the removal of one,
two, three, four, and five borehole volumes from the well, in addition to the
volume removed from the drop pipe. Assuming a nominal 12.25-inch borehole
and 26-ft interval between annular seals as shown in Figure 2, the volume of
26 ft of open borehole is approximately 160 gallons, thus sampling will be
performed following the removal of 160, 320, 480, 640, and 800 gallons from
each screen in well WW-4, in addition to the volume removed from the drop
pipe following pump startup. NASA will collect and manage groundwater
samples in accordance with the GMP (Groundwater Monitoring Plan; NASA,
2018b).
Chemical Analytical Data Comparison
NASA will submit groundwater samples to an accredited off-site laboratory
for analysis and review analytical data as described in the GMP (NASA,
2018b). Depending on the chemical analytical results from groundwater
samples collected during this test, qualitative or quantitative data evaluation
may be required. If the compounds of interest are not regularly detected in
samples collected during groundwater purging, a quantitative evaluation is not
possible. Data will be objectively evaluated on a qualitative basis to support
conclusions and recommendations. If the compounds of interest are detected in
samples collected throughout the purging process, a quantitative evaluation of
the data will be possible. NASA will directly compare analytical data from the
samples collected during this test to those available from samples collected
through the Water FLUTe sampling system prior to the test. A statistical
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 8
evaluation of the two data populations may also be performed if there are
adequate detections to support such an evaluation.
Compounds of
Interest and
Analytical Methods
Compounds of Interest
Based on the available analytical data from groundwater monitoring well WW-
4, NASA identifies NDMA and 1,4-dioxane as the primary compounds of
interest for this investigation. In addition, several additional SVOC have been
tentatively identified in groundwater samples using SW-846 Method 8270D
and are of interest to NASA. Finally, several VOC (volatile organic
compounds) are present in the WSTF groundwater contaminant plume, and
while these constituents are not expected to be present in groundwater at the
WW-4 location, NASA will collect samples for VOC analysis to obtain data
consistent with the ongoing groundwater assessment program. NASA will
measure groundwater indicator parameters such as temperature, turbidity, pH,
and conductivity prior to the collection of each set of samples.
Analytical Methods
Groundwater samples will be measured or analyzed for the target compounds
using the analytical methods or equipment indicated below:
Groundwater indicator parameters – field instruments
NDMA – Approved low-level analytical method (Southwest Research
Institute TAP 01-0403-015)
1,4-Dioxane – SW-846 Method 8270D with selective ion monitoring
SVOC – SW-846 Method 8270D
VOC – SW-846 Method 8260C
Groundwater Quality Control Samples
Groundwater samples will be collected, managed, and analyzed as described in
preceding sections of this plan and the GMP (NASA, 2018b). Quality control
samples will be collected to ensure quality data are generated during the
investigation. Field quality control samples will be collected as follows:
A set of VOC and low-level NDMA trip blanks will be collected prior
to proceeding to the well for purging at each screened interval in well
WW-4.
A set of equipment blanks for all analytical methods will be collected
from the non-dedicated purge pump prior to its installation in well
WW-4.
A set of field blanks for all analytical methods will be collected at the
beginning of purging at each screened interval in well WW-4.
Adequate field duplicate samples will be collected for all analytical
methods to ensure that at least eight samples are collected for these
analyses at each screened interval in well WW-4.
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 9
One VOC and low-level NDMA matrix spike/matrix spike duplicate
sample will be collected at each screened interval in well WW-4.
Laboratory quality control samples will also be analyzed as required by the
accredited contracted laboratory’s Quality Manual or Standard Operating
Procedures.
Regulatory Criteria
and Decision Rule
The purpose of this investigation is to determine if the detections of
compounds of interest at the four sampling zones in well WW-4 are
representative of groundwater at that location or the result of contamination
introduced by the Water FLUTe sampling system. This work plan is provided
to comply with NMED direction to evaluate groundwater sampling data
representativeness (NMED, 2016a, 2017).
If the compounds of interest are not regularly detected in samples collected
during groundwater purging, and a qualitative evaluation indicates that
groundwater samples collected from the Water FLUTe system are not
representative of the groundwater at the WW-4 location, NASA will evaluate
the impacts of non-representative detections and determine if an alternate
sampling system is required at this location. NASA may propose further
evaluation of additional Water FLUTe wells at locations beyond the
conceptualized groundwater contaminant plume.
If the compounds of interest are detected in samples collected throughout the
purging process, and the quantitative evaluation indicates that groundwater
samples collected from the Water FLUTE system are representative of
groundwater at the WW-4 location, NASA will reinstall the Water FLUTe
system and propose additional investigation to further delineate the nature and
extent of groundwater contamination in the area.
Based on the decisions made using groundwater data from this test, additional
investigation phases may be required.
Investigation-
Derived Waste
Management and
Disposal
Attachment 20 of the Permit (Section 20.2.13) requires a discussion of IDW
(Investigation-Derived Waste) management for the project (NMED, 2016b).
All IDW will be managed and disposed of in accordance with NASA waste
management procedures that incorporate appropriate federal and state
regulations. The types of IDW expected during the investigation include water
from within the FLUTe liner, groundwater produced during purging and
sampling operations, disposal PPE (personal protective equipment) and debris,
and water and soap solutions used to decontaminate reusable equipment.
Constituents derived directly from the WSTF contaminant plume are not
expected to be encountered during this investigation. Well WW-4 is located
beyond the known boundary of the WSTF groundwater contaminant plume.
Water inside the FLUTe liner was obtained from the WSTF potable water
system and was added during FLUTe system installation. Water within the
FLUTe liner has not been exposed to the borehole, conventional well
components, or groundwater.
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 10
NASA will manage water generated from the inside of the FLUTe liner,
groundwater generated from development activities, decontamination water,
and disposable PPE and debris generated during the investigation as non-
hazardous waste. The IDW will be properly containerized and samples will be
collected from IDW water. The samples will be analyzed for NDMA, 1,4-
dioxane, and WSTF plume constituents in accordance with the EPA methods
identified in this work plan.
Final waste characterization will be performed upon receipt of analytical data
for samples collected from the IDW water. If analytical results confirm that the
IDW is non-hazardous, the IDW water will be disposed of in the WSTF
sanitary sewer or by other appropriate disposal method. IDW debris will be
disposed of at a permitted non-hazardous landfill. In the unlikely event WSTF
listed waste constituents are detected, the IDW water will be properly managed
as hazardous waste, in accordance with the requirements of 20.4.1.300 NMAC
and 40 CFR 262.17 (2017). This waste would be treated and disposed of at the
Mid-plume Interception and Treatment System. Debris and disposable PPE
would be managed as hazardous waste in the central accumulation area in
accordance with the requirements of 20.4.1.300 NMAC and 40 CFR 262.17
(2017), as described in the GMP (NASA, 2018b). This waste would then be
properly treated and disposed of at a Resource Conservation and Recovery Act
treatment, storage, and disposal facility (EPA, 1998).
Schedule NMED approval of this AIWP is required prior to initiation of the evaluation.
Following NMED approval of the AIWP, NASA will initiate final planning
and procurement activities required to coordinate fieldwork. NASA expects
project planning to require approximately three months, after which fieldwork
will be performed in approximately one month. Following the completion of
fieldwork, data review, and data compilation, preparation of the final
evaluation report is estimated to require approximately four months. NASA
anticipates submittal of the final evaluation report to NMED within seven
months of NMED approval of this plan.
References Adoption of 40 CFR Part 262, Environmental Improvement Board, 20.4.1.300
NMAC (12-1-18).
EPA (Environmental Protection Agency). (1998, October). Management of
Remediation Waste Under RCRA. Washington, DC.
NASA Johnson Space Center White Sands Test Facility, (2010, November
19). Westbay Well Evaluation Work Plan. Las Cruces, NM.
NASA Johnson Space Center White Sands Test Facility, (2011, October 20).
NASA WSTF Westbay Well Evaluation Investigation Report. Las
Cruces, NM.
NASA Johnson Space Center White Sands Test Facility. (2012, November 1).
Westbay Well Conversion Work Plan. Las Cruces, NM.
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 11
NASA Johnson Space Center White Sands Test Facility. (2013, December 16).
Well Completion Reports for the Conversion of Westbay Wells WW-2
and JP-3. Las Cruces, NM.
NASA Johnson Space Center White Sands Test Facility. (2016, March 30).
Well Configuration Reports for Wells BLM-32, WW-4 and WW-5.
Las Cruces, NM.
NASA Johnson Space Center White Sands Test Facility. (2017a, March 22).
Well Reconfiguration Report for Westbay Wells JER-1, JER-2, ST-6,
and ST-7. Las Cruces, NM.
NASA Johnson Space Center White Sands Test Facility. (2017b, September
28). Response to Disapproval - Well Completion Report for PL-11
Monitoring Well. Las Cruces, NM.
NASA Johnson Space Center White Sands Test Facility. (2017c, March 30).
Detections of NDMA and TCE in WSTF Groundwater Monitoring
Wells BLM-30, PL-5, PL-6, PL-7, PL-8, PL-10, ST-5, and WW-3. Las
Cruces, NM.
NASA Johnson Space Center White Sands Test Facility. (2018a, April 25).
Request for Extension of Time for NASA WSTF Monitoring Well
Groundwater Data Representativeness Work Plan. Las Cruces, NM.
NASA Johnson Space Center White Sands Test Facility. (2018b, April 24).
NASA WSTF Groundwater Monitoring Plan Update for 2018. Las
Cruces, NM.
NMED Hazardous Waste Bureau. (2011a, January 14). Notice of Approval
with Modifications - Investigation Work Plan for Evaluating the
Representativeness of Groundwater Samples Collected from Westbay
Wells. Santa Fe, NM.
NMED Hazardous Waste Bureau. (2011b, December 16). Approval with
Modifications Investigation Report for Evaluating the
Representativeness of Groundwater Samples Collected from Westbay
Wells. Santa Fe, NM.
NMED Hazardous Waste Bureau. (2013, January 16). Approval Westbay Well
Conversion Work Plan. Santa Fe, NM.
NMED Hazardous Waste Bureau. (2016a, March 29). Approval NASA WSTF
Periodic Monitoring Report Fourth Quarter 2015. Santa Fe, NM.
NMED Hazardous Waste Bureau. (2016b, November 10). Administrative
Completeness and Fee Assessment Transmittal of Class 1 Permit
Modification Without Prior Approval. Santa Fe, NM.
NMED Hazardous Waste Bureau. (2017, October 4). Approval with
Modifications Detections of NDMA (N-Nitrosodimethylamine) and
TCE (Trichloroethylene) In WSTF Groundwater Monitoring Wells
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 12
BLM-30, PL-5, PL-6, PL-7, PL-8, PL-10, ST-5, and WW-3. Santa Fe,
NM.
NMED Hazardous Waste Bureau. (2018, May 15). Approval Request for
Extension of Time for NASA WSTF Monitoring Well Groundwater
Data Representativeness Work Plan. Santa Fe, NM.
Standards Applicable to Generators of Hazardous Waste, 40 C.F.R. § 262
(2017). Retrieved from http://www.gpo.gov
USDA SCS (United States Department of Agriculture Soil Classification
Survey. (1980). Soil Classification Survey. Washington, DC.
AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 13
Figure 1 WSTF Monitoring Well WW-4 Location
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AIWP Groundwater Data Representativeness Phase 1: Water FLUTe Well Evaluation 14
Figure 2 Monitoring Well WW-4 Completion Diagram
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396.92’
WW-4 WATER FLUTe INSTALLATION DIAGRAMBrass Cap: 4,443.19’ (AMSL)Borehole Diameter: 17 ½” 0-117’; 12 ¼” 117’-1,020’Surface Casing: Nominal 14” (13 ½” Inside Diameter
[ID]) Carbon Steel to 117’Casing and Screen: Nominal 5” (4 ¾” ID) Schedule (SCH)
80 PVC
Santa Fe Alluvium
Nominal 14” (13 ½” ID) Carbon Steel Surface Casing
Nominal 5” (4 ¾” ID) SCH 80 PVC CasingNominal 5” (4 ¾” ID) SCH 80 PVC 0.020-Slot Screen
Water FLUTe Liner (Polyurethane Coated Nylon Fabric)
Bentonite and 10/20 Sand Mix
Seal: 3/8” Bentonite Chips (~5’ thick)
30/70 Fine Sand (~3’ thick)
10/20 Coarse Sand (~20’ thick)
6/9 Coarse Sand
Slough
Sampling Port
Groundwater ElevationIn Open Borehole
Well Apron Construction:3’ x 3’ x 4” sloped concrete pad, barrier posts, and locking steel well cap surrounding casing.
Not to ScaleAll measurements in ft-bgs
unless otherwise notedCoordinates are NM State Plan (NAD 83 in ft)
Water FLUTe Sampling Zones:419’-429’589’-599’848’-858’948’-958’
Type II Portland Cement with 5% BentoniteGround Surface = 0’
419’
429’
589’
599’
948’
+
17 ½” Borehole
+
Santa Fe GroupAlluvium
958’ Total Depth FLUTe Liner and 6/9 Sand
Sample Zone 1 (10’)
Sample Zone 2 (10’)
Sample Zone 4 (10’)
848’
858’Sample Zone 3 (10’)
989’ Total Depth PVC Casing
201’
Coordinates: 554,772.88’ N; 1,512,065.14’ E Original Development Start Date: 04/18/01 Original Development End Date: 04/25/01 Redevelopment Start Date: 09/29/15 Redevelopment End Date: 10/02/15 FLUTe Well Installation Date: 11/09/15
PVC Casing Stick-up: ~1’
12 ¼” Borehole
117’
1,020’ Total Depth Borehole1,014’ Slough