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BP Products 1%W1 -3- 14w� March 24, 2009 <br /> Claim No. 2413 <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k ESLs Water (ug/L WQOs <br /> Maximum Latest Shallow Industrial2 Maximum Latest (ug/L) <br /> Soil Dermal (Nov 08) <br /> Residential (mg/kg) <br /> (mg/kg) <br /> TPH-g NA NA 83 450 160,000 <50 5 <br /> TPH-d NA NA 83 450 NA NA 56 <br /> Benzene NA NA 0.044 0.27 472 <1 0.15 <br /> Toluene NA NA 2.9 210 6.3 <1 42 <br /> Eth (benzene NA NA 2.3 5.0 20 <1 29 <br /> Xylenes NA NA 2.3 100 50 <1 17 <br /> MTBE NA NA 0.023 65 198,000 43 5 <br /> TBA NA NA 0.075 320,000 240,000 15,000 12 <br /> 1,2-DCA NA NA 0.0045 0.48 15 <1 0.4 <br /> Lead NA NA 200 750 NA NA 15 <br /> PCE NA NA 0.37 6.95-1 NA NA 1 0.06 <br /> TCE NA NA 0.46 4.1 1 NA NA 0.8 <br /> 1 Environmental Screening Levels(ESLs)Shallow Soil<3m,Groundwater is source of Drinking Water. <br /> 2 ESLs,Shallow Soil Screening Levels,Groundwater not source of Drinking Water,Commercial Use,Direct Exposure, <br /> Worker <br /> NA Not Analyzed,Not Applicable,or Data Not Available <br /> WQO Water Quality Objectives <br /> FP Free phase product in site wells <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: 1,400 cubic yards of contaminated soil has been excavated. <br /> B. In-Situ Soil Remediation: none identified <br /> C. Groundwater Remediation: <br /> • METHOD 1: batch extraction <br /> • DURATION: unknown <br /> • METHOD 2: ozone sparging <br /> • DURATION: Dec 03 through present <br /> • POUNDS OF OZONE INJECTED: 267.4 pounds <br /> California Environmental Protection Agency <br /> 01 Recycled Paper <br />