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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:
Cone of depression formed after 1 month.
2.
Why was the Technology Successful?
Benzene decreased from 11,013 ppb to nondetect in 4 months.
In 5 months, 1,842 gallons of fuel extracted.
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:
Fixed
2.
Cost:
$70,176 (capital, including installation)
C.
Operation of System
1.
Contract Type:
2.
Cost:
$3.46/hr. (including maintenance, technical support, and energy
consumption)








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