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Canepa's Car Wash -2- March 26, 2009 <br /> Claim No. 1695 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> _ feet b s Nov 08 <br /> MW-1 Sep 94 45-65 24.93 <br /> MW-2 Se _94 45-65 25.80 <br /> MW-3 Sep 94 45-65 26.29 <br /> MW-4 Sep 94 40-60 24.54 <br /> MW-5 Sep 94 40-60 26.02 <br /> MW-6 Sep 94 40-60 26.20 <br /> MW-7 Sep 94 40-60 1 25.30 <br /> • LAND USE DESIGNATION: 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 /> ESLs Water u /L WQOs <br /> Contaminant Soil m /k Maximum Latest (ug/L) <br /> Maximum Latest Shallow Industrial z (Nov 08) <br /> Soil Dermal <br /> Residential (mg/kg) <br /> m /k <br /> NA NA 83 450 69,000 190,000 56 <br /> TPH- NA 83 450 NA NA <br /> TPH-d NA <br /> 0.27 11,000 9,600 0.1 <br /> Benzene NA NA — 0.044 16,000 42 <br /> NA NA 2.9 210 13,000 29 <br /> Toluene NA — 2.3 5 p 2,600 3,500 <br /> Eth (benzene NA —NA 100 10,000 13,700 17 <br /> NA 2.3 <1 5 <br /> X lenes NA — 0.023 65 200 <br /> MTBE NA <10 12 <br /> TBA NA NA 0.075 320,000 NA 120 0.4 <br /> NA 0.004 <br /> NA 5 0.48 NA <br /> 1,2-DCA 750 NA NA 15 <br /> Lead NA NA 200 0.06 <br /> NA NA 0.37 0.95 NA NA <br /> PCE NA 0. <br /> — 4.1 NA NA 0.8 <br /> TCE NA — 46 <br /> 2 Environmental Screening Levels(ESLs Shallow Soil< m,Groundwater is source of Groundwater not source of Drinking Water,comDmercial Use, Direct Exposure, <br /> rinking Water. <br /> 2 ESLs,Shallow Soil Screening Levels. <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: unknown volume <br /> B. In-Situ Soil/ Groundwater Remediation: none identified <br /> California Environmental Protection Agency <br /> ?,a Recycled Paper <br />