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Concurrent Technologies Corporation
Remediation Survey
Air Sparging with Soil Vapor Extraction
Page 5
3.
Design Tools:
4.
Remediation Hardware:
5.
Capital Cost:
$16,000 for 3 extraction, 13 sparging, and 6 monitoring
wells
6.
Operating and Maintenance Cost:
B.
Air Sparge Pump System
1.
Design Goals:
Provide air for DOC wells and air drive pumps for GW
extraction wells
2.
Design Parameters
a.
Air Flow Rate:  60-100 scfh/sparge well
b.
Operating Pressure:
4.0 to 7.0 psi depending on water level (at
wellhead)
c.
Operating Temperature:  Ambient (air heated by compressor)
d.
Steam Inclusion:
e.
Other:  Air was injected at base of well via 3/8-inch diameter
plastic
tubing
3.
Design Tools:
4.
Remediation Hardware:
5.
Capital Cost:
$26,800 air compressor & control trailer
6.
Operating and Maintenance Cost:
C.
Vacuum Extraction Wells
1.
Design Goals:
Locally protect against volalilized hydrocarbons created by
the air
stripping process from entering neighboring office
buildings
2.
Design Parameters
a.
Pipe Type:
schedule 40 PVC
b.
Pipe Diameter:  4"
c.
Depth: 17 feet
d.
Screen Interval:  4-17 ft (converted GW extraction wells)
e.
Screen Type:
0.01 inch slotted screen
f.
Number and Spacing:
3 vertical, adjacent to GW extraction wells g. Other:
3.
Design Tools:








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