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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:
Vacuum system only operated for first 14 days - off-gas concen = 710 ppm total VOC
(BTEX & TPH). Next, air sparging activated with vacuum system - VOC output
increased to over 2,600 ppm. (81 lb/day vs. 270 lb/day)
2.
Why was the Technology Successful?
(Not complete as of publication)
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:
D.
Cost: Under $130,000
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