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Valley Motors -2- 1%P0 March 24, 2009 <br /> Claim No. 12540 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Se 08 <br /> VM-1 Jul 96 ? 32.21 <br /> VM-2 Jul 96 ? 31.74 <br /> VM-3 Jul 96 ? 32.27 <br /> VM-4 Aug98 ? 31.50 <br /> VM-5 Apr 03 ? 31.78 <br /> VM-6 Apr 03 ? 31.87 <br /> VM-7 Apr 03 ? 31.34 <br /> VM-8 Apr 03 ? 31.88 <br /> • MTBE THREAT CLASSIFICATION: N <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 industrial 2 Maximum Latest (ug/L) <br /> Soil' (Sep 08) <br /> Residential Dermal <br /> m /k (mg/kg) <br /> TPH-g NA NA 83 450 110,000 39,900 5 <br /> TPH-d NA NA 83 450 9,680 NA 56 <br /> Benzene NA NA 0.044 0.27 10,000 2,410 0.15 <br /> Toluene NA NA 2.9 210 22,000 3,690 42 <br /> Eth (benzene NA NA 2.3 5.0 4,900 2,860 29 <br /> Xylenes NA NA 2.3 100 19,000 7,840 17 <br /> MTBE NA NA 0.023 65 1,140 NA 5 <br /> TBA NA NA 0.075- 320,000 NA NA 12 <br /> 1,2-DCA NA NA 0.0045 0.48 NA NA 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 /> 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 Remediation: none identified <br /> California Environmental Protection Agency <br /> �a Recye%d Paper <br />