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PS Marina 's 5 -2- March 2 , 2009 <br /> Claim 3668 <br /> B . Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet bgs Dec 08 <br /> MW- 1 Apr 91 ?- 18 2 . 12 <br /> MW-2 Apr 91 ?-16 3 . 54 <br /> MW-3 Apr 91 ?- 16 7 . 33 <br /> MW-4R Aug95 ?- 18 3 .46 <br /> MW-5 Apr 91 ?-16 4 . 33 <br /> MW-6 Sep 93 ?- 17 5 . 23 <br /> MW-7 Sep 91 ?-30 10 , 52 <br /> MW-8 2008 ? 1 . 54 <br /> MW-9 2008 ? 10 . 60 <br /> MW- 10 2008 ? 12 . 00 <br /> MW- 11 2008 ? 5 . 05 <br /> MWA 2 2008 ? 6 .47 <br /> MW-13 2008 ? 16 . 96 <br /> MW- 14 2008 ? 9,75 <br /> MTBE THREAT CLASSIFICATION : A <br /> • LAND USE DESIGNATION : commercial/ agricultural <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 PRGs Water ug/L) WQOS <br /> Maximum Latest Shallow Industrial Maximum Latest (ug/L) <br /> Soil Dermal (Dec 08) <br /> Residential (mg/kg) <br /> (mg/kg) <br /> TPH- NA NA 83 450 91800 60 5 <br /> TPH-d NA NA 83 450 NA <50 56 <br /> Benzene KA NA 0. 044 0.27 230 <0.5 0. 15 <br /> Toluene NA NA 2. 9 210 6.2 <0. 5 42 <br /> Eth (benzene NA NA 2. 3 5. 0 36 <0. 5 29 <br /> X lenes NA NA 2.3 100 87 <1 17 <br /> MTBE NA NA 0.023 65 150, 000 37 5 <br /> TBA NA NA 0. 075 320, 000 67, 000 353000 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 /> CnManuia EnvfroummW Protection Agency <br /> :a Recyded Faper <br />