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R&L Business Management -2- May 3, 2010 <br /> Claim No. 8828 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Jan 2010 <br /> MW-1 Dec 95 40-60 26.45 <br /> MW-2 Dec 95 - 26.93 <br /> MW-3 Dec 95 36-56 26.87 <br /> MW-4 Dec 95 25-45 26.18 <br /> MW-5 Dec 97 25-45 26.42 <br /> MW-6 Dec 98 70-80 26.59 <br /> MW-7 Jan 00 1 70-80 27.22 <br /> MW-8 Jan 00 70-80 26.41 <br /> VW1 Dec 96 2545 26.56 <br /> VW2 Dec 96 1 25-45 27.92 <br /> VW3 Dec 96 25-45 26.90 <br /> VW4 Dec 96 25-45 26.55 <br /> EW1 Jun 03 30-60 26.21 <br /> EW2 Jun 03 30-60 26.26 <br /> • MTBE THREAT CLASSIFICATION: N <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 CONCENTRATIONS <br /> Contaminant Soil m /k Water (ug/L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Jan 2010 <br /> TPH-g NA NA 260,000 540 5 <br /> TPH-d NA NA NA NA 56 <br /> Benzene NA NA 41,000 64 0.15 <br /> Toluene NA NA 58,000 25 42 <br /> Eth (benzene NA NA 18,000 15 29 <br /> Xylenes NA NA 24,000 32 17 <br /> MTBE NA NA 1,100 15 5 <br /> TBA NA NA 47 NA 12 <br /> 1,2-DCA NA NA ND NA 0.4 <br /> Lead NA NA NANA NA 15 <br /> PCE NA NA I NA NA 0.06 <br /> TCE NA NA I NA NA 0.8 <br /> NA Not Analyzed, Not Applicable,or Data Not Available <br /> WQO Water Quality Objectives <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> California Environmental Protection Agency <br /> Z4' RecycledPaper <br />