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Ripon Farm Service -2- v September 2, 2010 <br /> Claim No. 8431 <br /> B. Monitoring Well Information <br /> Well Designation Dafeet b s <br /> Date Installed Screen Interval Most( ae 2009 TW <br /> MW-1 May 94 14-34 24.87 <br /> MW-2 May 94 14-34 25.27 <br /> MW-3 May 94 15-35 24.31 <br /> MW-4 Oct 95 15-35 25.03 <br /> MW-5 Oct 95 15-35 25.05 <br /> MW-6 May 98 15-30 - <br /> MW-7 May 98 15-30 - <br /> MW-8 May 98 15-30 - <br /> MW-9 May 05 15-30 27.01 <br /> MW-10 May 05 15-35 26.93 <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 /kg) Water (ug/L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> (Apr 2010 <br /> TPH-g NA NA 14,000 <50 5 <br /> TPH-d NA NA 12,000 <50 56 <br /> Benzene NA NA 1,500 <0.5 0.15 <br /> Toluene NA NA 130 <0.5 42 <br /> Eth (benzene NA NA 580 <0.5 29 <br /> Xylenes NA NA 1,700 <0.5 17 <br /> MTBE NA NA 560 <0.5 5 <br /> TBA NA NA 190 <10 12 <br /> 1,2-DCA NA NA 78 <0.5 0.5 <br /> NA Not Analyzed, Not Applicable or Data Not Available <br /> WQO Water Quality Objectives <br /> V. FREE PRODUCT: none identified <br /> V1. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> B. In-Situ Soil/ Groundwater Remediation: <br /> MEHTOD: soil vapor extraction <br /> • DURATION: Dec 00 through Jan 04 <br /> MASS OF TPH-G REMOVED: 275 pounds <br /> California En vironmental Protection Agency <br /> Z,'*Recycled Paper <br />