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![Page 1: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/1.jpg)
U.S. Department of the InteriorU.S. Geological Survey
Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells
Dye Injection 11/13/07
Results up to 1/8/08 (8 weeks)
![Page 2: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/2.jpg)
Preliminary Results
2000 Results
Air Force Plant 6Dobbins Air Force
Reserve Base
B-4
Area
SouthernPolytechnic
StateUniversity
Life University
Rottenwood
Creek
Sites with TCE detections
MW0s2
![Page 3: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/3.jpg)
Preliminary Results
Objective and Approach
Better understand ground-water movement in deep bedrock from B4 to offsite area
Selected two on-site wells (OB203 and RW203) that were located close enough to each other for an initial test.
Also included off-site bedrock wells in the test that were located downgradient from the injection well.
![Page 4: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/4.jpg)
Preliminary Results
Tracer Test Location Map
![Page 5: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/5.jpg)
Preliminary Results
Sampling Frequency
Weekly sampling at RW203
Monthly sampling at other sites
![Page 6: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/6.jpg)
Preliminary Results
Pre-Injection Background Sampling
Fluorescein (Acid Yellow 73) Eosine (Acid Red 87) Rhodamine WT (Acid Red
388) Sulphorhodamine B (Acid
Red 52) Tinopal CBS-X (Fabric
brightening agent 351) Solophenol 500% (Direct
Yellow 96) D&C Red #28 FD&C Red #3 D&C Green #8 Palanil Luminous Red G Lissamine FF
![Page 7: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/7.jpg)
Preliminary Results
Injection 11/13/07 @ 1300
Set 1-inch PVC to 90 ft 1 gal #3 Red (pre-mixed) Followed by 15 gal water
(Flowmeter indicated no flow below 105 feet)
![Page 8: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/8.jpg)
Preliminary Results
Downgradient Monitoring Well RW203
Downward flow between 100 and 139’
Zero flow below 139’
Dye receptor placed at 105’
![Page 9: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/9.jpg)
Preliminary Results
Results: Injection 11/13/07 @ 1300
ob203a RW203
92’ 380’ 880’
SCT2 SCT1
A
B
C
A
B
C
SCT3
(420-560)
(88-105)
(521-543)
(434-457)
(85-125)
(65-95)
(139)
(100)
(119-198)
Depths in parentheses(not to scale)
![Page 10: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/10.jpg)
Preliminary Results
Results – 3 Days
ob203a RW203
92’ 380’ 880’
SCT2 SCT1
A
B
C
A
B
C
SCT3
Not sampled Not sampled
30446
(420-560)
(88-105)
(521-543)
(434-457)
(85-125)
(65-95)
(119-198)
![Page 11: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/11.jpg)
Preliminary Results
Results – 2 Weeks
ob203a RW203
92’ 380’ 880’
SCT2 SCT1
A
B
C
A
B
C
SCT3ND
ND ND (.030)?
22973
(420-560)
(88-105)
(521-543)
(434-457)
(85-125)
(65-95)
(119-198)
![Page 12: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/12.jpg)
Preliminary Results
Results – 5 Weeks
ob203a RW203
92’ 380’ 880’
SCT2 SCT1
A
B
C
A
B
C
SCT3ND
0.365 21.4
ND (.050)
ND
ND
6650
(420-560)
(88-105)
(521-543)
(434-457)
(85-125)
(65-95)
(119-198)
![Page 13: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/13.jpg)
Preliminary Results
Results – 8 Weeks
ob203a RW203
92’ 380’ 880’
SCT2 SCT1
A
B
C
A
B
C
SCT3ND
15.6 300.2
.916
? (not sampled)
ND
201
(420-560)
(88-105)
(521-543)
(434-457)
(85-125)
(65-95)
(119-198)
![Page 14: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/14.jpg)
Preliminary Results
Map 8-Weeks
![Page 15: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/15.jpg)
Preliminary Results
All Results
LocationDistance
(ft) 3-DAYS 2-WK 3-WK 5-WK 8-WK
RW-203 (100, 139) 92 30446 22973 6990 6650 201
SCT2-C (85-125) 384 ND .365 (.292) 15.673 (8.937)
SCT2-A (521-543) 384 (0.05) (0.916)
SCT-2B (434-457) 384 (ND)
SCT-3 (65-95) 400 ND (ND) ND (ND) ND (ND)
MW0S-2R (133) 528 ND (ND) ND (ND) ND (ND)
MWOS-03 (11-21) 531 ND (ND) ND (ND) ND (ND)
Trib-1 633 ND (ND) ND (ND) ND (ND)
SCT1-C (88-105) 879 0.03 21.455 (4.272) 300.24 (12.712)
SCT1-A (420-560) 879 ND ND
![Page 16: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/16.jpg)
Preliminary Results
What would cause such a highly constrained flow path?
Why is the flow rate so high?
![Page 17: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/17.jpg)
Preliminary Results
I
IV
III
II
I-B
Dominate strike of foliation = green, joints = red
![Page 18: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/18.jpg)
Preliminary Results
Parting Plane
![Page 19: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/19.jpg)
Preliminary Results
Findings (so far)
Fastest GW movement is through transition zone with flow rates on the order of 25 to 50 ft/day
GW movement appears to be strongly constrained along discontinuities formed parallel to foliation/layering (i.e. parting planes and lithologic contacts)
A downward hydraulic gradient in the area appears to influence deeper GW movement
![Page 20: U.S. Department of the Interior U.S. Geological Survey Preliminary Results of Dye- Tracer Test at the B4 Area and Offsite Wells Dye Injection 11/13/07.](https://reader035.fdocuments.net/reader035/viewer/2022062320/56649d1b5503460f949f16b1/html5/thumbnails/20.jpg)
Preliminary Results
Tracer Test Continued…
Stay tuned Sampling every 3 weeks Will continue to sample until dye passes
through system or we are satisfied with results
Other zones/wells may be tested