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Harry's Auto Mart ` -2- �../ May 4, 2009 <br /> Claim No. 15094 <br /> • SOIL TYPES: interbedded and intermixed sand, silt, and clay <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s (Dec 08 <br /> MW-1 Feb 01 ?-63 56.23 <br /> MW-2 Feb 01 ?-60 55.51 <br /> MW-3 Feb 01 ?-60 55.91 <br /> MW-4 Feb 01 ?-60 55.67 <br /> MW-5 Dec 03 ?-76 54.52 <br /> MW-6 Dec 03 ?-75 55.02 <br /> MW-7 Dec 03 ?-76 54.33 <br /> MW-1d Dec 03 ?-101 56.31 <br /> • MTBE THREAT CLASSIFICATION: C <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 (Dec 08) <br /> Dermal <br /> Residential(mg/kg) (mg/kg) <br /> TPH-g NA NA 83 450 280,000 120,000 5 <br /> TPH-d NA NA 83 450 NA NA 56 <br /> Benzene NA NA 0.044 0.27 25,000 11,000 0.15 <br /> Toluene NA NA 2.9 210 34,000 8,600 42 <br /> Eth (benzene NA NA 2.3 5.0 11,000 3,000 29 <br /> Xylenes NA NA 2.3 100 44,000 15,000 17 <br /> MTBE NA NA 0.023 65 140 1.6 5 <br /> TBA NA NA 0.075 320,000 130 <1,000 12 <br /> 1,2-DCA NA NA 0.0045 0.48 1,700 180 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 /> California Environmental Protection Agency <br /> �.p$Recycled Paper <br />