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Thrifty Oil -3- March 16, 2009 <br /> Claim No. 2156 <br /> B. In-Situ Soil/ Groundwater Remediation: none identified <br /> • METHOD: dual phase extraction <br /> • DURATION: Apr 01 through present <br /> • VOLUME OF GROUNDWATER REMOVED: 582,804 gallons <br /> • MASS OF TPH-G REMOVED: 210,105 pounds (Dec 08) <br /> • RATE OF REMOVAL: 4.25 pounds/day <br /> D. Groundwater Trends.- <br /> 0 <br /> rends:• Benzene trends are shown below: <br /> BENZENE Results for MW-11 <br /> 35000 _ .__ . _._.__ Y- T- <br /> 30000- <br /> 25000--- <br /> 20000 <br /> -30000 25000 20000 <br /> 15000 <br /> 10000- <br /> 5000 <br /> p <br /> 1�1�1�1 <br /> 4, 41 ^^�r�61 yh ^^'(1^ ,�1 (v �^ <br /> RPM BENZENE Trend <br /> California Environmenta/Protection Agency <br /> �.a Recycled Paper <br />