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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):
TPH as gas (35 g/L)
TPH as fuel oil (460 g/L)
BTEX and MTBE (nondetect - 5.3 g/L)
6.
Contaminant Names and Concentrations in the Vadose Zone (ppm):
TPH as gas (6 g/kg)
TPH as fuel oil (10 g/kg)
BTEX and MTBE (1.3-2.6 g/kg)
III.
PILOT OR BENCH SCALE TESTS
A.
Pilot Test
1.
Goals:
Access effectiveness of remedial technologies radius of influence, VOC removal
2.
Wells
a.
Purpose (e.g., injection, extraction, or monitoring):
Injection
b.
Pipe Type:
PVC
c.
Pipe Diameter:
2-inch
d.
Depth:
719 ft (to top of clay unit at depth)
e.
Screen Interval:
2 ft screens0.010 slot nominally
f.
Screen Type:
Above clay unit. Hi-flow PVC
g.
Number and Spacing:
10 total sparge wells; 30 ft radial influence spacing
3.
Air Sparge Pumping Rate: 127183 cfm
4.
Test Vacuum and Duration:
3 May7 June 1994
Duration (hrs)
Vacuum (psi)
<5 psi
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