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Concurrent Technologies Corporation
Remediation Survey
Air Sparging with Soil Vapor Extraction
Page 3
5.
Contaminant Names and Concentrations in Ground Water (ppm):
trichloroethene (TCE) - 0.76-11.0 mg/L
also detected; 1,1-dichloroethane (DCA); 1,1,1-trichloroethane (TCA);
tetrachloroethane; and carbon tetrachloride
6.
Contaminant Names and Concentrations in the Vadose Zone (ppm):
TCE 0.63-3.9 ppm
Xylenes 4,000 ppm
III.
PILOT OR BENCH SCALE TESTS
A.
Pilot Test
1.
Goals:
To evaluate the effectiveness in remediating saturated zone soils contaminated with
VOCs which are impacting ground water quality.
To determine full-scale operating parameters.
Extraction
Injection
2.
Wells
a.
Purpose
b.
Pipe Type:
40 PVC
40 PVC
c.
Pipe Diameter:
1.5"
2"
d.
Depth:
2540 ft
1517 ft (5 ft. section
approx.
2-3 ft. above
water
table)
e.
Screen Interval:
2 ft. section between
7-20 ft. below water table
f.
Screen Type:
Threaded flush joint
Threaded flush joint
screen (10 slot)
screen (20 slot)
g.
Number and Spacing:
7, 15-20 ft. apart 2
h.
Other:
Riser with silica to 1 ft.
Riser with silica to 1 ft.
above screen
above screen
3.
Air Sparge Pumping Rate: 5-10 cfm/well
70 cfm at 15-20
at 15-60 psi
inches of water
4.
Test Vacuum and Duration:
Vacuum (psi)
Duration (hrs)





 


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