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CH2M HILL <br /> 155 Grand Avenue <br /> Suite 1000 <br /> Oakland,CA 94612 <br /> P.O.Box 12681 <br /> CH2M H I LL 2005 JUL 13 Ail 10: 02 Oakland,CA <br /> 94604-2681 <br /> SAP' "r <br /> JOAQU' COUNTY Tel 510.251.2426 <br /> HEALTH DEVIRPARTMENT MENTAL Fax 510.893.8205 <br /> July 12,2005 <br /> Jeffrey Wong <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 E.Weber Ave.,Third Floor <br /> Stockton,California 95202 <br /> Subject: Well Destruction Permit for Pacific Gas&Electric Company's Lathrop <br /> Dehydrator Station San Joaquin County <br /> Dear Mr.Wong: <br /> We are requesting a well destruction permit for three monitoring wells(MW-2,MW-3,and MW- <br /> 4)at the Lathrop Dehydrator Station Site. PG&E has commissioned CH2M HILL to destroy <br /> wells at this site as part of its site closure program,under the direction of the Central Valley <br /> Regional Water Quality Control Board. <br /> The well destruction method will consist of overdrilling the three wells to their maximum depth <br /> and tremie grouting to surface with neat cement with a ratio of 1-94 pound sack of cement to 5-6 <br /> gallons of water. The site work is scheduled for Wednesday,July 20,2005. The final time and <br /> date will be confirmed by telephone 48 hours prior to site work commencing. <br /> The permit application forms,fee,and supporting documents are included,as outlined in the <br /> enclosures list on the following page. Please don't hesitate to call me at(510)587-7576 or <br /> Su-san Lichens at(510)587-7553 if you have any questions. <br /> Sincerely, <br /> Matthew Moore1CH2M HILL <br /> Project Environmental Scientist <br /> Office telephone: 510-587-7576 <br /> Cell Phone: 510-508-5080 <br /> Office facsimile: 510-622-9076 <br /> Email: mmoore2@ch2m com <br />