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Canepa' s Car Wash -2- March 24 , 2009 <br /> Claim No . 8449 <br /> B . Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Nov 08 <br /> MW- 1 Nov 93 50-70 35 . 66 <br /> MW-2 Nov 93 50-70 35 . 29 <br /> MW-3 Nov 93 50-70 36 . 10 <br /> MW-4 Nov 93 50-70 36 . 30 <br /> MW-5 Mar 94 50-70 35 .40 <br /> MW-6 Mar 94 45-65 34 . 60 <br /> MW-7 Mar 94 45-65 35 . 70 <br /> MW-9 Oct 01 2545 35 . 57 <br /> MW- 10 Oct 01 2545 34 . 61 <br /> MW- 11 Oct 01 2545 35 . 01 <br /> MW-12D Oct 01 100- 110 34 . 94 <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 ESLs Water (ug/L WQOs <br /> Maximum Latest Shallow Industrial2 Maximum Latest (ug/L) <br /> Soil Dermal (Nov 08) <br /> Residential <br /> (mg/kg) (mg/kg) <br /> TPH-g NA NA 83 450 500, 000 400 , 000 5 <br /> TPHA NA NA 83 450 NA NA 56 <br /> Benzene NA NA 0. 044 0.27 96 , 000 53, 000 0. 15 <br /> Toluene NA NA 2 .9 210 91800 5 ,400 42 <br /> Eth (benzene NA NA 2. 3 5. 0 24,000 3 ,600 1 29 <br /> Xylenes NA NA 2.3 100 _ 24,700 13,200 17 <br /> MTBE NA NA 0.023 65 740, 000 340, 000 5 <br /> TBA NA NA 0.075 320, 000 NA <10 12 <br /> 112-DCA . NA NA 0. 0045 0.48 NA 87 0.4 <br /> Lead NA NA 200 750 NA NA 15 <br /> PCE NA NA 0. 37 0. 95 NA NA 0,06 <br /> TCE NA NA 0.46 4. 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 /> Woo Water Quality Objectives <br /> FP Free phase product in site wells <br /> V. FREE PRODUCT : none identified <br /> Vi . SOIL AND GROUNDWATER REMEDIATION <br /> CaMornia Environmental Protection Agency . <br /> w <br /> a.C} Recycled Paper <br />