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CONESTOGA-ROVERS <br /> &ASSOCIATES <br /> December 15,2008 Reference No. 060222 <br /> -2- <br /> CRA intends to implement the Regional Water Quality Control Board (RWQCB),approved <br /> work plan,Groundwater Monitoring Well Installation Work Plan, Mountain House,June 2008. <br /> A brief description of the proposed work follows: <br /> • Advance 16 borings for well installation to a depth of 35 feet below ground surface (ft bgs) <br /> • Advance one soil vapor probe to the depth of 16 ft bgs. <br /> • All well locations will be grouted in accordance with the San Joaquin County <br /> Environmental Health Department's permitting regulations. <br /> • All well locations will be surveyed. <br /> The proposed field schedule is as follows: <br /> • Survey boring locations and notify Underground Service Alert(USA): January 12,2009 <br /> • Private Utility Locator:January 15,2009 <br /> • Clear borings with air-knife: January 19&20,2009 <br /> • Drill and sample: January 21-23 and January 26-27,2009. <br /> If you have any questions or concerns,please call me at(707) 933-2362 <br /> Sincerely, <br /> CONESTOGA-ROVERS& ASSOCIATES <br /> Jeff Gaarder <br /> JG/fb/1 <br /> Encl. Groundwater Monitoring Well Installation Work Plan, Mountain House, June 2008 <br /> C.C.. Mr.Joseph Lentini,Shell <br /> Mr. Nathan Casebeer P.G., RWQCB <br /> Mr.Mike Infurna,SJCEHD <br /> Worldwide Engineering, Environmental, Construction, and IT Services <br />