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Shell Oil Company <br /> P.b.Box 3105 <br /> Houston,Texas77001 <br /> March 21, 1986 �j �l <br /> MAR 2 4 lyMb <br /> ENVIROME"'TAL HEALTH <br /> FER(v111laEnV1��5 <br /> Ms. L. Cotulla <br /> San Joaquin Local Health District <br /> 1601 East Hazelton Avenue <br /> P. 0. Box 2009 <br /> Stockton, California 95201 <br /> Re: Shell Oil Distribution Facility <br /> 3515 Navy Drive, Rough & Ready Island <br /> Stockton, California <br /> Dear Ms. Cotulla: <br /> Reference is made to your letter dated February 24, 1986, wherein you <br /> requested data for the Health District files. Normally, replies to such <br /> requests would be handled by Shell 's Western Distribution Area office at <br /> Anaheim. However, we plan to gather additional initial data; hence, my <br /> correspondence directly to your department. <br /> Twelve groundwater monitoring wells were installed at the captioned <br /> plant to investigate existing groundwater conditions and provide a means <br /> of monitoring the groundwater for possible future hydrocarbon releases . <br /> The well logs reported hydrocarbon odors in wells No. 8, 10 and 11, but <br /> no floating hydrocarbons were found. <br /> The water table elevations were plotted on the attached map, which shows <br /> the water table gradient flow to the south rather than north as <br /> originally anticipated. To adequately investigate the site condition <br /> and provide an acceptable monitoring network, permits are requested for <br /> seven additional wells as located on the water table maps. Five are to <br /> further monitor the plant site facilities and two will monitor the un- <br /> developed property to the north. <br /> During the drilling soil grab samples of formation changes will be taken <br /> and bagged, hydrocarbon odors recorded and soil descriptions logged. We <br /> do not anticipate encountering any floating hydrocarbons, but if we do, <br /> we will review all available data and submit a proposed plan of action. <br /> BQFQ8608001 <br />