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John Pestana QTIP Trust -2- February 22, 2010 <br /> Claim 3484 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Dec 08 <br /> MW-1 Dec 91 9-20 8.25 <br /> MW-2 Dec 91 ?-20 7.8B <br /> MW-3 Dec 91 ?-19 7.20 <br /> MW4 Oct 07 ? 7.90 <br /> MW-5 Oct 07 ? 8.51 <br /> • MTBE THREAT CLASSIFICATION: X <br /> • LAND USE DESIGNATION: residential and commercial <br /> • ESTIMATED WATER QUALITY.OBJECTIVES (vl/QO'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 Water u WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Oct 08)/ -- <br /> TPH-g NA NA 12,000 5 <br /> TPH-d NA NA 7,200 NA 56 <br /> Benzene NA NA 210 8.6 0.15 <br /> Toluene NA NA 84 1.8 42 <br /> Eth lbenzene NA NA 130 1.9 29 <br /> Xylenes NA NA 360 2.8 17 <br /> MTBE NA NA 28 <0.5 5 <br /> TBA NA NA NA <5 12 <br /> 1,2-DCA NA NA NA NA 0.4 <br /> Lead NA NA NA NA 15 <br /> PCE NA NA NA NA 0.06 <br /> TCE NA NA NA NA 0.8 <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/ Groundwater Remediation: none identified <br /> California Environmental Protection Agency <br /> �.G}Recycled Paper <br />