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Stefano's Gasoline -2- 4� September 2, 2010 <br /> Claim No. 11515 <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Most Recent DTW <br /> feet b s Jan 2010 <br /> MW-1 Jan 99 30-50 38.60 <br /> MW-2 Jan 99 30-50 37.56 <br /> MW-3 Jan 99 30-50 37.57 <br /> MW-4 Nov 01 30-50 37.22 <br /> MW-5 Nov 01 30-50 37.41 <br /> MW-6 Nov 01 30-50 37.18 <br /> MW-7 Nov 01 30-50 37.18 <br /> MW-8 Jan 09 30-50 37.37 <br /> MW-9 Jan 09 60-65 38.00 <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 /kWater (ug/L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Jul 2010 <br /> TPH-g NA NA 210,000 130,000 5 <br /> TPH-d NA NA NA NA 56 <br /> Benzene NA NA 19,000 800 0.15 <br /> Toluene NA NA 64,000 2,500 42 <br /> Eth (benzene NA NA 6,100 5,200 29 <br /> Xylenes NA NA 35,000 20,200 17 <br /> MTBE NA NA 120 <1 5 <br /> TBA NA NA ND <10 12 <br /> 1,2-DCA NA NA 500 15 0.5 <br /> Lead NA NA NA NA 15 <br /> PCE NA NA NA NA 0.06 <br /> TCE NA NA NA NA 0.8 <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 /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> California Eu vironmental Protection Agency <br /> ZRety,*d Paper - <br />