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 Concurrent Technologies Corporation
Remediation Survey
Air Sparging with Soil Vapor Extraction
Page 8
C.
Lessons Learned
1.
Lessons Learned about the Operation of the Equipment:
Must balance vacuum to ground water depth.
Through March 1994, no supplemental fuel was required to operate the internal
combustion engine.
2.
Why was the Technology Successful?
During the first 8 months of operation, vapor concentrations changed from 11,000
ppmv to below 1,000 ppmv. Through August 1994, approximately 325 gallons of
gasoline were extracted and burned as fuel.
3.
Why was the Technology Unsuccessful?
VI.
CONTRACT TYPE AND COSTS
A.
Design of System
1.
Contract Type:
2.
Cost:
B.
Construction of System
1.
Contract Type:
2.
Cost:
C.
Operation of System
1.
Contract Type:
2.
Cost:
$210/month for propane +
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