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Manna Pro Corp. %-- -2- March 5, 2009 f <br /> Claim No. 678 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Mar 08 <br /> MW-1 Oct 91 41-51 26.40 <br /> MW-2 Oct 91 41-51 26.30 <br /> MW-3 Oct 91 41-51 27.10 <br /> MW-4 Oct 91 40-49 26.48 <br /> MW-5 Oct 91 30-50 27.74 <br /> MW-6 Oct 91 30-50 26.94 <br /> MW-7 Feb 93 30-42 27.01 <br /> MW-8 Feb 93 30-42 26.81 <br /> MW-9 Feb 93 30-42 27.12 <br /> MW-10 Feb 93 30-42 26.78 <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 Industrial2 Maximum Latest (ug/L) <br /> Soil l (Sep 08) <br /> Derma <br /> Residential Derma) <br /> (mg/kg) <br /> TPH-g NA NA 83 450 170,000 63,000 5 <br /> TPH-d NA NA 83 450 ND NA 56 <br /> Benzene NA NA 0.044 0.27 42,000 13,000 0.15 <br /> Toluene . NA NA 2.9 210 51,000 7,300 42 <br /> Eth lbenzene NA NA 2.3 5.0 3,200 1,700 29 <br /> Xylenes NA NA 2.3 100 18,000 4,300 17 <br /> MTBE NA NA 0.023 65 ND 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 /> TGE 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 En vironmental Protection Agency <br /> • P.�7 Recycled Peper <br />