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Marci's Diesel Service -3- December 20, 2010 <br /> Claim No. 7709 r, <br /> A. Soil Excavation: excavation, unknown volume, was conducted to 29 feet below <br /> grade. <br /> B. In-Situ Soil Remediation: <br /> • METHOD: dual phase extraction pilot tests <br /> • DURATION: August 2010 <br /> • MASS REMOVED: 5 pounds ` <br /> • ESTIMATE OF MASS IN SOIL: 108,000 pounds <br /> • ESTIMATED MASS DISSOLVED-IN GROUNDWATER: 1 to 8 pounds <br /> C. Groundwater Remediation: <br /> • METHOD: air sparging <br /> • DURATION: proposed b <br /> . <br /> D. Groundwater Trends: TPH-D trends.'are shown below, source area and down <br /> gradient, respectively. <br /> DIESEL RANGE ORGANICS Results for MW-7 <br /> s00o{ .I <br /> 8000 —�.-.-._ f <br /> 7000 _ _._. _._I_ <br /> s0oo --- - -- — <br /> � 5000 rt- <br /> 4000- <br /> 3000 1 _ <br /> y <br /> 2000-- <br /> 1000 <br /> 000 1000 <br /> I <br /> 0 ° <br /> I <br /> DIESEL RANGE ORGANICS <br /> California Environmental Protection Agency <br /> �i�Recyc%d Paper <br />