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Ranch Market -3- May 13, 2010 <br /> Claim No. 15211 <br /> B. In-Situ Soil Remediation: none identified <br /> • METHOD: soil vapor extraction <br /> • DURATION: Sep 02 through Jun 08 <br /> • MTBE REMOVAL RATE (Jun 07): 0.002 pounds/day <br /> • TOTAL MASS OF MTBE REMOVED: 9.24 pounds <br /> C. Groundwater Remediation: <br /> • METHOD: ozone sparging <br /> • DURATION: Mar 05 through Apr 05 <br /> D. Groundwater Trends: <br /> • Benzene trends are shown below: <br /> BENZENE Results for MW-7 <br /> 1600- <br /> 1400- <br /> 1200- <br /> 1000- <br /> 0 <br /> soo 1400 1200 10000 <br /> �. <br /> 800__ <br /> N <br /> 500 <br /> 400..--- ... _ <br /> 200' <br /> d� a`R' a a 41 <br /> n`im <br /> vF:rar BENZENE, <br /> BENZENE Results for MW-3 <br /> 25000- <br /> 20000 <br /> 5000 20000 ki - <br /> el�e <br /> 15000_T10000 <br /> Of <br /> 5000 <br /> as BENZENE <br /> California Environmental Protection Agency <br />