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SACRAMENTO <br /> rft r E <br /> December 7, 1989DEC 12 1989 <br /> ENVIRONMENTAL HEALTfI <br /> PERMIT/SERVICES <br /> Mr. Thomas D. Peltier <br /> Engineering Geologist <br /> Regional Water Quality Control Board <br /> Central Valley Region <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827 <br /> Reference: Work Plan Date Extension for 2400 Airport Way, Stockton, <br /> California; Versar Job No. 6147.324 <br /> Dear Mr. Peltier: <br /> The purpose of this letter is confirm our conversation of December 5, <br /> 1989, regarding the submission date of a work plan for additional <br /> investigation of hydrocarbon contamination at 2400 Airport Way, in <br /> Stockton, California. <br /> Versar submitted a letter report concerning the installation of a <br /> ground water monitoring well and ground water sampling at the site on <br /> September 21, 1989. In your response letter dated November 8, 1989, you <br /> informed Mr. Williams that while the level of contamination reported (32 <br /> parts per billion) did not appear to pose a serious concern, an <br /> additional investigation would be necessary to verify that ground water <br /> beneath the site has not been significantly impacted. Specifically, the <br /> investigation should be designed to determine the extent of <br /> contamination and the hydraulic gradient at the site. Your letter <br /> requested that a work plan for the additional investigation be submitted <br /> by December 8, 1989. <br /> Mr. Williams has asked Versar to request on his behalf an extension <br /> of the work plan submittal date for 90 days. As I explained, Mr. <br /> Williams is planning to develop the site as a service station-food mart <br /> with the assistance of a Small Business Administration/bank loan which <br /> is currently under review. Until loan approval is obtained, Mr. <br /> Williams is unable to begin construction, which would include the <br /> additional investigation requested. Both Mr. Williams and Versar concur <br /> that the installation of additional well (s) can only be accomplished <br /> after the station is completed since the exact locations of buildings, <br /> tanks, lines, equipment, and utilities which would influence well (s) <br /> placement would be unknown. Furthermore, ground water monitoring wells <br /> installed prior to construction would be subject to accidental damage or <br /> destruction during site development. <br /> 5330 PRIMROSE DRIVE •SUITE 228• FAIR OAKS,CALIFORNIA 95628 <br /> TELEPHONE:(916)962-1612•FAX:(916)962-2678 <br />