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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):
6.
Contaminant Names and Concentrations in the Vadose Zone (ppm):
III.
PILOT OR BENCH SCALE TESTS
A.
Pilot Test
1.
Goals:
Six months long term SVE/IAS Pilot test
2.
Wells
Injection
Extraction
a.
Purpose
b.
Pipe Type:
PVC schedule 40
(galvanized steel)
c.
Pipe Diameter:
6 in (3/4 in)
d.
Depth:
(90 ft)
e.
Screen Interval:
25 to 55 feet
(35 ft below water table)
f.
Screen Type:
0.04 in slot
(3/4 in SS pressure nozzle)
g.
Number and Spacing:
3.
Air Sparge Pumping Rate: 25 cfm at 17 psia
4.
Test Vacuum and Duration:
4a.
Other:
Vacuum (psi)
Duration (hrs)
Install a 2 in butterfly-valve to restrict flow out of vent well. Install a pressure gauge between the valve
and the well.
SVE System Blower: 2.5 HP EG&G Rotron DR505 CD58 regenerative, 160 cfm at 15 in water pressure.
Vacuum side has moisture separator and air filter.
Air sparge compressor regulated by an Allen Bradley controller pressure side contains gate valves, an air
dryer, pressure gauge, and pressure relief valve.
SVE will vent to a 1,000 lb vapor-phase carbon vessel. Discharge is reinjected into vadose zone.
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