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Concurrent Technologies Corporation
Remediation Survey
Air Sparging with Soil Vapor Extraction
Page 8
1.
Lessons Learned about the Operation of the Equipment:
Aeration did not seem to effect aquifer characteristics (e.g. pH, redox potential)
2.
Why was the Technology Successful?
BTEX reduction 21 ppm to < 1 ppm in 2 months (well below the established closure
criteria)
5-10 lbs. gasoline removed from groundwater and soils in 60 days.
Within 2-3 weeks, the cleanup goal (of 10 ppm BTEX) was reached.
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:





 


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