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r <br /> Toste Farms �- -2- May 5, 2009 <br /> Claim No. 14558 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTVII <br /> feet b s Nov 08 <br /> MW-1 Dec 99 4-19 8.39 <br /> MW-2 Dec 99 5-20 8.31 <br /> MW-3 Dec 99 5-20 7.77 <br /> MW-4 Dec 99 5-20 8.16 <br /> MW-5 Dec 99 5-20 7.57 <br /> MW-6 Dec 99 27-32 8.57 <br /> MW-7 Dec 99 5-20 8.52 <br /> MW-8 Dec 99 5-20 7.91 <br /> MW-9 Mar 01 5-20 8.23 <br /> MW-10 Mar 01 5-20 8.04 <br /> MW-11 Mar 01 5-20 8.69 <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 /> Contaminant Soil m /kg) ESLs Water (ug/L WQOs <br /> Maximum Latest Shallow Industrial2 Maximum Latest (ug/L) <br /> Soil' (Nov 08) <br /> Residential Dermal <br /> m Ik (mg/kg) <br /> TPH-9 NA NA 83 450 44,000 210 5 <br /> TPH-d NA NA 83 450 NA NA 56 <br /> Benzene NA NA 0.044 0.27 5,000 <0.5 0.15 <br /> Toluene NA NA 2.9 210 7,200 1 <0.5 40 <br /> Eth (benzene NA NA 2.3 5.0 1,500 <0.5 29 <br /> Xylenes NA NA 2.3 100 5,600 <0.6 17 <br /> MTBE NA NA 0.023 65 130,000 45 5 <br /> TBA NA NA 0.075 320,000 2,600 <10 12 <br /> 1,2-DCA NA NA 0.0045 0.48 15 <0.5 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 En vironmental Protection Agency <br /> Z,']Recycled Paper <br />