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Rainwater Carwash . -3- May 7, 2008 <br /> Claim No. 14719 <br /> MW-13a Sep 02 30-35 18.60 <br /> MW-13b Sep 02 60-65 20.29 <br /> MW-13c Sep 02 85-90 20.30 <br /> MW-13d Sep 02 115-120 20.30 <br /> MW-13e Sep 02 138-145 20.32 <br /> MW-13f Sep 02 165-170 20.31 <br /> • LAND USE DESIGNATION: residential and commercial <br /> • ESTIMATED WATER QUALITY OBJECTIVES (WQO'S) FOR SITE: Per the <br /> Water Quality Control Plan (Basin Plan) for the Sacramento River Basin and the <br /> San Joaquin River Basin (Fourth Edition). <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k PRGs Water (ug/L WQOs <br /> Maximum Latest Residential Industrial Maximum Latest (ug/L) <br /> (mg/kg) (mg/kg) Se 07 <br /> TPH- NA NA NA NA 190,000 86,000 5 <br /> TPH-d NA NA NA NA 8,100 NA 49 <br /> Benzene NA NA 0.64 1.4 18,000 210 0.15 <br /> Toluene NA NA 520 520 28,000 1,000 42 <br /> Eth (benzene NA NA 400 400 5,200 3,300 29 <br /> Xylenes NA NA 270 420 28,000 22,800 17 <br /> MTBE NA NA 32 1 70 2,000,000 8,500 1 5 <br /> TBA NA NA NA NA - 8.3 <10 12 <br /> 1,2-DCA NA NA NA NA 130 7.1 0.5 <br /> Lead NA NA 400 800 NA NA 15 <br /> PCE NA NA 17 130 4,900 NA 0.06 <br /> TCE NA NA 0.11 110 46 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: none identified <br /> C. Groundwater Remediation: <br /> • METHOD: groundwater extraction <br /> • DURATION: Jan 02 through Sep 07 <br /> • VOLUME OF GROUNDWATER REMOVED: 633,767 gallons <br /> MASS OF MTBE REMOVED: 302 pounds <br /> California Environmental Protection Agency <br /> Zd Recyc%d Papez <br />