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Marci s Diesel Service -2- 'f March 2, 2009 <br /> Claim No. 7709 <br /> B. Monitoring Well Information <br /> W6 Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Oct 08 <br /> MW-1 Aug00 49-64 53.56 <br /> MW-2 Aug00 46-61 53.19 <br /> MW-3 Aug00 44-59 52.62 <br /> MW-4 Aug00 35-55 53.50 <br /> MW-5 Aug00 30-45 53.57 <br /> MW-6 Aug00 30-45 53.03 <br /> MW-7 Jun 02 31-66 53.83 <br /> MW-8 Jun 02 31-46 52.99 <br /> MW-104 Jun 02 66-71 53.85 <br /> MW-105 Jun 02 66-71 53:48 <br /> MW-106 Jun 02 66-71 53.02 <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 CONCENTRATIONS <br /> Contaminant Soil m /k ESLs Water (ug/L WQOS <br /> Maximum Latest Shallow dustrial 2 Maximum Latest (ug/L) <br /> Soil' In (Oct 08) <br /> Residential Dermal <br /> m /k (mg/k9) <br /> TPH-g NA NA 83 450 1,000 200 5 <br /> TPH-d NA NA 83 450 99,000 620 56 <br /> Benzene NA NA 0.044 0.27 4.9 2.2 0.15 <br /> Toluene NA NA 2.9 210 2.9 <0.5 42 <br /> Eth (benzene NA NA 2.3 5.0 7 <0.5 29 <br /> Xylenes NA NA 2.3 100 14 <0.5 17 <br /> MTBE NA NA 0.023 65 5.5 NA 5 <br /> TBA NA NA 0.075 320,000 NA NA 12 <br /> 1,2-DCA NA NA 0.0045 0.48 NA NA 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: sheen in MW-4, MW-5, and MW-7. <br /> California Environmental Protection Agency <br /> Z,,*Recycled Pape, <br />