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EA ENGINEERING, Western Regional Operations <br /> 41 Lafayette Circle <br /> SCIENCE, AND Lafayette,California 94549 <br /> TECHNOLOGY, INC. (415)283-7077 <br /> 12 January 1989 <br /> �. <br /> Ms.Diane Hinson <br /> San Joaquin County Environmental Health <br /> P.O. Box 2009 <br /> Stockton, California 95201 <br /> RE: Addendum to the permit number 88-2955 to install monitoring wells at former <br /> Chevron SS 9-1918, 45 East Harding Way, Stockton, California: work plan to <br /> install additional monitoring wells and soil borings <br /> Dear Ms. Hinson: <br /> In mid-November 1988, I spoke with you on the behalf on Chevron U.S.A. Inc. about the <br /> possibility of appending the permit number 88-2955 to install monitoring wells at former <br /> Chevron SS 9-1918, located at 45 East Harding Way, Stockton, California. The original <br /> permit number 88-2955 issued to Chevron on 4 November 1988 authorized the installation <br /> six monitoring wells. Those six wells were drilled and completed between 7 and 11 <br /> November 1988. The wells were developed, and the ground water was sampled on 15 <br /> November 1988. The analyses are complete, and the data is summarized in a report <br /> submitted to Chevron U.S.A. Inc. for review and transmittal. The following work plan <br /> presents a brief summary of this investigation and a work plan to install four more <br /> monitoring wells and to drill five soil borings that will be completed for potential use in soil <br /> venting. <br /> Also included is a completed permit form that lacks only a signature of a representative of <br /> Spectrum Exploration Inc. I have enclosed with the form a check for$50, the fee for <br /> overtime review. Chevron is anxious to move ahead with this additional work so that a <br /> remediation system can be designed,reviewed,and installed. Your expeditious review of <br /> this work plan will be greatly appreciated. <br /> Should you have any questions,please don't hesitate to call me or the project geologist <br /> Kevin Kennedy at (415) 283-7077. <br /> Sincerely, <br /> t <br /> Terry R. W1nsIr <br /> Senior Geologist <br /> (41�)?83- M94 <br /> BALTIMORE 0 CHICAGO ❑ CINCINNATI 0 LINCOLN 0 NEW YORK 0 SAN FRANCISCO <br />