Periodic Aquifer Testing at Three Locations: Savannah River Site (Hydraulic Testing),WIPP (Hydraulic & Pneumatic Testing),
and Bemidji (Slug Testing)
Todd C. Rasmussen, PhDUniversity of Georgia, Athens
hydrology.uga.edu
Savannah River Site, SC
WIPP Hydraulic Testing
Periodic Pneumatic Test at WIPP site, New Mexico
Locations of the 1979 crude oil pipeline release point, migration pathways on the land surface, and three oil bodies in contact with shallow groundwater.
National Crude Oil Spill Fate and Natural Attenuation Research Site near Bemidji, MN.
5271005
5271015
5271025
5271035
5271045
5271055
5271065
5271075
5271085
342725 342735 342745 342755 342765 342775 342785 342795 342805 342815 342825 342835 342845 342855 342865
UTM
Y 1
983N
AD, m
eter
s
UTM X 1983NAD, meters
USGS Wells
2010 Coreholes
Soil Gas MWs
1998 Geoprobes
Pipeline Source
2011 Coreholes
2011 TarGOST Points
Former Recovery Wells
Pump Test Wells
Pipeline and August 1979 Release Point
Approximate 2012 LNAPL Footprint Area
GP-37d GP-36d
GP-39c
GP-40c
GP-41c
GP-42c
507
303
C-1051
C-1056
C1009
C-1008
520
532A
518A
9205A
531A531B
531C
533D
533A317
522
805
521
534A420A420B423
9014
301A
302422 306
421A421B
319
411
607
9620
9017
9016
315
604A
9621913
Base Map with Well, Coring, and LIF Sounding Locations, and the Approx-imate Position of the Leading Edge of the North Pool Footprint, June 2012.
C-1102
C-1108 TG1110
TG1116
TG1118
TG1125
TG110
TG1101TG1104
TG1103C-1103
C-1109C-1112
TG1109
TG1120TG1113
TG1117
TG1122 TG1126
TG1114 TG1121TG1111
TG1112
??
TG1115
TG1119
TG1123
TG1124
TG1107
TG1106TG110
Full Extent of Oil Bodyis Currently Undefined
TG110
RW-2N
RW-1N
9205B
Trial Test Area for theOscillating Slug Tester
0501
0505
0506
0507
USGS Pumping Test Area
?
Locations of the U.S. Geologic Survey aquifer tests and Don Lundy’s oscillating slug tests relative to the approximate boundaries of the north pool oil body.
Photograph of Don Lundy’s periodic slug test system set up to begin an aquifer test at a control well.
Wire Cable
Guide Wheel Rotating Arm Arm Wheel
Solid Slug
Control Well
Rising / Falling Water Level
qA
BC
Df
Sketch of selected components of Don Lundy’s periodic slug test equipment
July 10, 2010
0 2 4 6 8 10 12 14 16 18 20-1.0
-0.5
0.0
0.5
1.0
1.5
Elapsed Time, minutes
Chan
ge in
Wat
er Le
vel,
feet
Water-level response to multiple slug oscillations at control well 534A, including shutdown/recovery periods at approximately 6.9 and 16.8 min of elapsed time.
0.0 0.5 1.0 1.5 2.0 2.5 3.0-6
-4
-2
0
2
4
6
Observed Response
Top of Slug
Bottom of Slug
Pumping Rate
Elapsed Time, minutes
Inje
ction
(-) o
r Ext
racti
on (+
) Rat
es,
gal/
min
, o
r fee
t
Modeled slug movement, observed water-level response, and calculated pumping rates for the first three slug oscillations in control well 531A
Comparison of aquifer hydraulic properties between the periodic slug test and a conventional aquifer test in the Glacial Aquifer at the National Crude Oil Spill Fate and Natural Attenuation Research Site, Bemidji, MN, USA.
Periodic Slug Tests at 531A
Theis (1935)
Well ID T (m2/day) S Kh/Kz
9205A 5,784 0.00204 980
9205B 3,247 0.00107 495
Dougherty and Babu (1984)
Well ID T (m2/day) S Kh/Kz
9205A 3,180 0.00067 14
9205B 1,807 0.00011 10
USGS Aquifer Test at 501
(Neuman, 1972)
Well ID T (m2/day) S Kh/Kz
505 3,756 0.00217 31
506 3,957 0.00272 33
507 4,229 0.00096 61