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Kenneth Endith • -3- . April 21, 2008 <br /> Claim No. 8479 <br /> Y <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k PRGs Water (ug/L WOOS <br /> Maximum Latest Residential Industrial Maximum Latest (ug/L) <br /> (mg/kg) (mg/kg) Se 07 <br /> TPH-g NA NA NA NA 310,000 93,000 5 <br /> TPH-d NA NA NA NA NA NA 49 <br /> Benzene NA NA 0.64 1.4 56,000 16,000 0.15 <br /> Toluene NA NA 520 520 55,000 7,100 42 <br /> Eth (benzene NA NA 400 1 400 4,700 3,200 29 <br /> Xylenes NA NA 270 420 1 37,000 7,600 17 <br /> MTBE NA NA 32 70 440,000 1,400 5 <br /> TBA NA NA NA NA 1,700 <10 12 <br /> 1,2-DCA NA NA NA NA 390 130 0.5 <br /> Lead NA NA 400 800 NA NA 15 <br /> PCE NA NA 17 130 NA NA 0.06 <br /> TCE NA NA 0.11 110 NA NA 0.8 <br /> PRGs USEPA Region 9 Preliminary Remediation Goals <br /> MCL Maximum Contaminant Levels <br /> AL Action Level <br /> NA Not Analyzed,Not Applicable,or Data Not Available <br /> WOO Water Quality Objectives . <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> B. In-Situ Soil Remediation: <br /> • METHOD: soil vapor extraction <br /> • DURATION: Aug 04 through present <br /> C. Groundwater Remediation: <br /> • METHOD: groundwater extraction <br /> • DURATION: Nov 04 through present <br /> • VOLUME OF GROUNDWATER REMOVED: 254,472 gallons <br /> • MASS OF HYDROCARBONS REMOVED: 579 pounds of TPH-G <br /> California Environmental Protection Agency <br /> �d Recyc%d Paper <br />