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Stantec <br /> L & M OPERABLE UNIT- FOURTH QUARTER AND ANNUAL 2010 SITE STATUS, <br /> REMEDIAL SUMMARY, AND GROUNDWATER MONITORING REPORT <br /> Annual Summary of Remediation -2010 <br /> January 31, 2011 <br /> 6.2 ASVE SYSTEM OPERATIONAL AND ANALYTICAL SUMMARY- 2010 <br /> During 2010 (December 9, 2009 to December 14, 2010), the ASVE system was 89% <br /> operational (330 out of 370 days). The system was intermittently shut down for repairs between <br /> August 30th and October 7th. The system removed approximately 9.5 pounds (1.6 gallons) of <br /> TPHg from soil vapor beneath the Delta View Apartments (below). No measurable amount of <br /> benzene or MtBE was detected or removed during the year. <br /> Hour TPI-Ig Benzene MtBE <br /> Meter Cumulative Cumulative Cumulative <br /> Date Reading Recovery Recovery Recovery <br /> Sampled (hours) (lbs) (Ibs) (lbs) <br /> 12/9/2009 16,173.3 2,066.8 0.13 0.00 <br /> 1/12/2010 16,985.6 2,066.8 0.13 0.00 <br /> 2/4/2010 17,507.8 2,076.3 0.13 0.00 <br /> 3/2/2010 18,130.7 2,076.3 0.13 0.00 <br /> 4/7/2010 18,905.0 2,076.3 0.13 0.00 <br /> 5/12/2010 19,562.5 2,076.3 0.13 0.00 <br /> 6/10/2010 20,259.4 2,076.3 0.13 0.00 <br /> 7/12/2010 21,025.4 2,076.3 0.13 0.00 <br /> 8/4/2010 21,578.8 2,076.3 0.13 0.00 <br /> 9/15/2010 22,202.8 2,076.3 0.13 0.00 <br /> 10/7/2010 22,465.3 2,076.3 0.13 0.00 <br /> 11/17/2010 23,425.5 2,076.3 0.13 0.00 <br /> 12/14/2010 24,095.8 2,076.3 0.13 0.00 <br /> REPORTING PERIOD: December 9,2009 to December 14,2010 <br /> Days in Period: 370 <br /> Days Operational in Period: 330 <br /> Period Pounds TPI-Ig Removed: 9.5 <br /> Period Pounds Benzene Removed: 0 <br /> Period Pounds MtBE Removed: 0 <br /> I:\Tidewater\TW Stockton(Parcel 2A-0415)\Reports\QMR\2010\4010-Annual\4Q10 and Annual QSSRQRSRQMR Stockton_FINAL.doc 6.3 <br />