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Toste Farms, -2- May 23, 2008 . <br /> Claim No."14558 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most-Recent DTVII <br /> feet b s Feb 08 <br /> MW-1 Dec 99- 1 4-19 7.93 <br /> MW-2 Dec 99 5-20 7.89 <br /> MW-3 Dec 99 5-20 7.31 <br /> MW-4 Dec 99 5-20 7.73 <br /> MW-5 Dec 99 5-20 7.13 <br /> MW-6 :Dec 99 27-32 8.05 <br /> MW-7 Dec 99 5-20 8.04 <br /> MW-8 Dec 99 5-20 7.51 <br /> MW=9 Mar 01 5-20 7.84 <br /> MW-10 Mar 01 5-20 7.64 <br /> MW-11 Mar 01 5•-20 8.23 <br /> • LAND USE DESIGNATION: commerbial <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) PRGs Water (ug/L WQOs <br /> Maximum Latest Residential Industrial Maximum Latest (ug/L) <br /> m tk - (mg/kg Feb 08 <br /> TPH-g NA NA NA NA 44,000 800 5 <br /> TPH-d NA NA NA NA NA NA 49 <br /> Benzene NA NA 0.64 1.4 5.000 <0.5 0.15 <br /> Toluene NA NA 520 520 7,200 <0.5 42 <br /> Eth !benzene NA. NA 400 400 1,500 <0.5 . 29 <br /> Xylenes NA NA 2.70 420 5,600 <0.5 17 <br /> MTBE. NA NA 32 70 130,000 590 5 <br /> TBA NA 'NA NA'. ' NA 2,600 210 12 <br /> 1,2-DCA NA NA. NA NA _ 15 <0.5 0.5 <br /> Lead' NA NA 400 800 NA NA 15 <br /> PCE NA NA 17 130 NA NA 0.06 <br /> TCE NA NA 0.11 110 NA NA 0.8 <br /> PRGs- . USEPA Region 9 Preliminary Remediation Goals + <br /> MCL _. Maximum.Contaminant Levels <br /> AL Action Leel 3 <br /> NA Not Analyzed, Not Applicable,or Data Not Available <br /> WOO Water Quality Objectives <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 En vironmerital Proteedan Agency <br /> P�dRecyeledPaper <br />