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F ANDERSON <br /> F (� GEOTECHNICAL <br /> NEIL"IL O• ' `ND`RSON ENVIRONMENTAL <br /> AND A S S O C IAT ES INSPECTIONS a TESTING <br /> LABORATORY SERVICES <br /> POOL ENGINEERING <br /> POST TENSION DESIGN <br /> November 11, 2004 <br /> NOA Project Number:LE03-034 <br /> Michael Infurna Jr., Senior REHS <br /> UIC - Site Mitigation Unit IV <br /> San Joaquin County Environmental Health Department <br /> 304 E. Weber Avenue, 3`d Floor <br /> Stockton, CA 95202-2708 <br /> Subject: Groundwater Monitoring Workplan for Chinchiolo Stemilt <br /> 4799 &4505 North Jack Tone Road, Stockton, CA <br /> Dear Michael, <br /> Regarding the Groundwater Monitoring Workplan for Chinchiolo Stemilt project, we would like <br /> to amend the work plan for the use of an 8-inch diameter hollow stem auger rather than the <br /> 6.5-inch diameter auger initially proposed for the construction of the four monitoring wells. This <br /> will allow for a little extra room inside the auger for well construction. In addition, I have a letter <br /> of authorization from Larry Stonebarger of Chinchiolo Stemilt to construct the monitoring wells <br /> on Parcel 089-170-52. <br /> The authorization letter, signed work plan, MFR,revised well construction diagram are attached <br /> to this letter. You should have the permit and the check for the permit fees. With your approval, <br /> we hope to start drilling next week on Thursday, 18`h of November, 2004. <br /> Best Regards, <br /> Neil nd on & Associates, Inc. <br /> PSD GEO <br /> David Welch, M.Sc. Engineering Geologist C?��� J. <br /> w�<00�� <br /> CEG-2151, CHG-653, GP-1049 OP No. 2151 Z TA <br /> CERTIFIED <br /> ENGINEERING <br /> GEOLOGIST �Q <br /> cc: Timothy R. O'Brien, CVRWQCB 9T pe <br /> att: authorization letter FBF CA�`F <br /> work plan <br /> MFR <br /> revised well construction diagram <br /> LODI ■ SACRAMENTO ■ MODESTO <br /> ENVIRONMENTAL DIVISION 902 Industrial Way,Lodi,California 95240 ■209.367.3701 ■ 209.369.4228 fax ■w .noandersonxom <br />