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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 /> 6.1.2 DPE System 2010 Analytical Summary- Soil Vapor Extraction <br /> The SVE component of the DPE system removed approximately 329.10 pounds (54 gallons) of <br /> TPHg, throughout 2010 (below). No measurable amount of benzene or MtBE was removed <br /> during this time period. <br /> Hour TPHg Benzene MtBE <br /> Meter Cumulative Cumulative Cumulative <br /> Date Reading Recovery Recovery Recovery <br /> Sampled hours lbs lbs lbs <br /> 12/9/2009 26,485.1 7,224.1 5.03 0.00 <br /> 1/12/2010 27,189.3 7,251.5 5.03 0.00 <br /> 2/4/2010 27,524.4 7,256.9 5.03 0.00 <br /> 3/2/2010 28,004.5 7,286.7 5.03 0.00 <br /> 4/7/2010 28,700.5 7,304.3 5.03 0.00 <br /> 5/12/2010 29,299.1 7,355.2 5.03 0.00 <br /> 6/10/2010 29,895.7 7,382.9 5.03 0.00 <br /> 7/12/2010 30,233.8 7,404.2 5.03 0.00 <br /> 8/4/2010 30,671.4 7,439.2 5.03 0.00 <br /> 10/7/2010 31,331.7 7,464.3 5.03 0.00 <br /> 11/17/2010 31,796.0 7,471.9 5.03 0.00 <br /> 12/14/2010 32,444.0 7,553.2 5.03 0.00 <br /> Period Days: 370 <br /> Period Operating Days: 248 <br /> Period Pounds of TPHg Removed: 329.10 <br /> Period Pounds of Benzene Removed: 0.00 <br /> Period Pounds of MtBE Removed: 0.00 <br /> 6.1.3 SPH Removal Summary -2010 <br /> The DPE Non-aqueous Extraction Technique (NET) free product removal system and periodic <br /> extraction from monitoring wells have removed approximately 28.3 gallons of SPH from <br /> groundwater beneath the Site during quarterly visits between January 14, 2010 and October 14, <br /> 2010 (below). <br /> NET <br /> NET System TPE TPE SPH SPH <br /> System Cumulative Cumulative Cumulative Extraction Extraction Total <br /> Period SPH SPH SPH SPH Period Cumulative SPH <br /> Recovery Recovery Recovery Recovery Recovery Recovery Recovery <br /> Date Notes (gallons) (gallons) (gallons) (gallons) (gallons) (gallons) (gallons) <br /> 1/14/2010 1,575 7.7 133.4 1,724.7 <br /> 4/15/2010 1,575 5.8 139.2 1,730.5 <br /> 7/15/2010 1,575 6.5 145.7 1,737.0 <br /> 10/14/2010 1,575 8.3 154.0 1,745.3 <br /> Total Gallons SPH Recovered During 2010: 28.3 <br /> I:\Tidewater\TW Stockton(Parcel 2A-0415)\Reports\QMR\2010\4010-Annual\4Q10 and Annual QSSRQRSRQMR Stockton_FINAL.doc 6.2 <br />