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Jess Cervantes '` <br /> '2" May 7, 2009 <br /> Claim No. 8509 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTVII <br /> feet b s Dec 08 <br /> MW-1 A r 99 26-46 32.24 <br /> MW-2 A r 99 31.46 31.86 <br /> MW-4 Apr 99 25-45 32.24 <br /> MW-5 Apr 99 26-46 31.76 <br /> MW-6 Apr 99 30-45 31.32 <br /> MW-7a Se 99 100-'110 32.47 <br /> MW-8 Se 99 100-110 31.96 <br /> MW-9 Jun 01 25-45 32.29 <br /> MW-10 Jun 01 25-45 32.48 <br /> MW-11W-12 Jun 01 100-110 32.31 <br /> MJun 01 120-130 32.23 <br /> • MTBE THREAT CLASSIFICATION: D <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 /kg) ESLs Water (ug/L woos <br /> Maximum Latest Shallow Industrial 2 Maximum Latest (ug/L) <br /> Soil' (Dec 08) <br /> Residential Derma! <br /> M Ik (mglkg) <br /> TPH-g NA NA 83 450 29,000 1,400 5 <br /> TPH-d NA NA 83 450 150,000 NA 56 <br /> Benzene NA NA 0.044 027 13,000 17 0.15 <br /> Toluene NA NA 2.9 210 61,000 1.3 42 <br /> Eth lbenzene NA NA 2.3 5.0 4,700 1.4 29 <br /> Xylenes NA NA 2.3 100 22,000 12 17 <br /> MTBE NA NA 0.023 65 160 X0.5 5 <br /> TBA NA NA 0.075 320,000 290 <5 12 <br /> 1,2-DCA NA NA 0.0045 0.48 520 3.1 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 /> 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 /> California Environmental Protection Agency <br /> �. Recycled Paper <br />