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li t <br /> RMB Garage -2- May 5 , 2009 <br /> Claim No . 16768 <br /> B . Monitoring Well Information . <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet bgs) Oct 08 <br /> MW- 1 Sep 03 20-40 25 . 39 <br /> MW-2 Sep 03 20-40 25 . 12 <br /> MW-3 Sep 03 2040 25 .78 <br /> MW-4 Sep 03 20-40 25 . 50 <br /> MW-5 Nov 05 20-40 25 .51 <br /> MW-6 Nov 05 2040 24 .70 <br /> MW-7 Feb 05 2040 25 . 85 <br /> MW-8 Dec 05 2040 25 . 05 <br /> MW-9 Dec 05 20-40 25 . 18 <br /> MW- 10 Mar 07 20-40 24 . 72 <br /> MW- 11 Mar 07 20-40 25 . 85 <br /> MW- 12 Mar 07 88-98 25 . 85 <br /> MW- 13 Mar 07 20-40 <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 tril2 Maximum Latest (ug/L) <br /> Soil' Indusa (Oct 08) <br /> Residential Dermal <br /> (mg/kg) (mg/kg) <br /> TPH-g NA NA 83 450 580 , 000 2302000 5 <br /> TPHA NA NA 83 450 95, 000 22, 000 56 <br /> Benzene NA NA 0 . 044 0.27 3003000 48, 000 0. 15 <br /> Toluene NA NA 2. 9 210 430, 000 1 110, 000 42 <br /> Eth (benzene NA NA 2. 3 5. 0 32, 000 12, 0000 29 <br /> Xylenes NA NA 2. 3 100 136, 000 49, 000 17 <br /> MTBE NA NA 0. 023 65 < 10 9 5 <br /> TBA NA NA 0. 075 320, 000 <100 < 10 12 <br /> 112-DCA NA NA 0. 0045 0.48 11100 320 0 .4 <br /> Lead NA NA 200 750 NA NA 15 <br /> PCE NA NA 1 0 . 37 0. 95 NANA 0. 06 <br /> TCE NA NA 1 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 /> Woo Water Quality Objectives <br /> FP Free phase product in site wells <br /> V. FREE PRODUCT: none identified <br /> California Enviroamenta/Protection Agency <br /> Q. Recyded Paper <br />