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Raymond Greer * -2- • • May 7, 2009 <br /> Claim No. 8525 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s (Nov 08 <br /> MW-1 Jan 99 69-89 74.96 <br /> MW-2 Jan 99 70-90 63.84 <br /> MW-3 Jan 99 70-90 66.38 <br /> MW-4 Jan 99 70-90 63.73 <br /> MW-5 Jul 00 70-90 74.76 <br /> MW-6 Jul 00 95-100 75.52 <br /> MW-8 Jul 00 70-90 76.25 <br /> MW-9 Jul 00 70-90 74.82 <br /> DW - 78.90 <br /> • MTBE THREAT CLASSIFICATION: B <br /> • LAND USE DESIGNATION: commercial and agriculture <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 Maximum Latest (ug/L) <br /> Soil (Nov 08) <br /> Dermal <br /> Residential(mg/kg) (mg/kg) <br /> TPH-g NA NA 83 450 89,000 9,100 5 <br /> TPH-d NA NA 83 450 NA NA 56 <br /> Benzene NA NA 0.044 0.27 13,000 590 0.15 <br /> Toluene NA NA 2.9 210 13,000 91 42 <br /> Eth (benzene NA NA 2.3 5.0 1,300 110 29 <br /> Xylenes NA NA 2.3 100 7,900 194 17 <br /> MTBE NA NA 0.023 65 890 180 1 5 <br /> TBA NA NA 0.075 320,000 110 6.4 12 <br /> 1,2-DCA NA NA 0.0045 0.48 530 430 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 /> A. Soil Excavation: unknown volume <br /> California En vironmental Protection Agency <br /> P.�Recycled Paper <br />