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OU a <br /> John.Pestaha QTIP Trust -2- March 24, 2008 <br /> Claim 3484 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTVI! i <br /> feet b s Oct 07 <br /> MW-1 Dec 91 ?-20 8.28 <br /> MW-2 Dec 91 ?=20 7.95 <br /> MW-3 Dec 91 ?-19 7.29 <br /> MW-4 - ? 7.96 <br /> MW-5 - ? 8.54 <br /> MTBE THREAT CLASSIFICATION: X <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 CgNCENTRATIONS <br /> Contaminant Soil m /k PRGs Water (ug/L WQOs <br /> Maximum Latest 'Residential lndu'strial Maximum . Latest (ug/L) <br /> m /k m 'Ik Jul 07 <br /> TPH-g NA NA NA NA 12,000 510 5 <br /> TPH-d NA NA NA NA 7,200 NA 49 <br /> Benzene NA NA 0.64 114 210 8.9 0.15 <br /> Toluene NA NA 520 520 84 24 42 <br /> Eth lbenzene NA NA 400 400 130 0.9 29 <br /> Xylenes NA NA 270 420 360 1.5 17 <br /> MTBE NA NA 32 70 28 NA 5 <br /> TBA NA NA NA NA NA NA 12 <br /> 1,2-DCA NA NA NA NA NA NA 0.5 i <br /> Lead NA NA 400 840 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 Level <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 /> I <br /> A. Soil Excavation: unknown volume <br /> B. In-Situ Soil/ Groundwater Remediation: none identified <br /> 1 <br /> California Environmental Proteetku Agency <br /> ORecycled Paper <br />