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---, GROUNDWATER <br /> TECHNOLOGY, INC. <br /> OIL RECOVERY SYSTEMS 4080 Pike Lane, Suite D, Concord, CA 94520-1227 (415)671-2387 <br /> January 28, 1987 <br /> 20--2894 <br /> Dave Lewis <br /> The Southland Corp. <br /> P.O. Box 404 <br /> Pleasanton, CA 94566--0040 FEB 13 i387 <br /> ENVIROMENTA4_ HEALTH <br /> Re: Attached Project Update Report FERMIT/SERVICES <br /> Dear Dave, <br /> Attached herewith is Groundwater Technology, Inc. ' s project <br /> update report for the 7--Eleven store located at 9110 Thornton <br /> Road, Stockton, California. The report presents the activities <br /> and observations at the site through January 19, 1987. This <br /> letter addresses concerns raised at the interagency meeting on <br /> December 29, 1986 and provides recommendations based on the <br /> current conditions at the site. <br /> To further define the areal extent of the dissolved hydro- <br /> carbon plume beneath the site, installation of two previously <br /> proposed monitoring wells, MW13 and MW14, should be completed. <br /> The wells should be constructed to accomodate the installation of <br /> a pumping system if necessary. The installation of these two <br /> wells is currently scheduled for the week of Febuary 2, 1987. <br /> The most recent sampling of groundwater from the monitoring <br /> wells at the site suggests that the dissolved plume may extend in <br /> a southeasterly direction as far as monitoring well 10 . If on <br /> the next scheduled sampling, February 9, 1987 , the presence of <br /> dissolved hydrocarbons is again noted in monitoring well 10, the <br /> installation of a pumping system should be implemented within <br /> pumping well 2 or monitoring well 10. The pumping system <br /> initially proposed for pumping well 2 was installed in monitoring <br /> well 12 because of the presence of dissolved hydrocarbons within <br /> the well which is in close proximity to the domestic well TMG. <br /> 00iu off[cvs:Redondo Beach,CA:Tampa, FL;MmWeville. LA:Norwood.MA.Novi.ML <br /> Minneapolis,MN:Greenville,\H;Chadds Ford.PA; Montreal,Quebec. Canada <br />