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r s X—. ! . <br /> F <br /> . _ = Geological Audit Services, In'c. <br /> Environmental Professionals lr <br /> C=r 1603 March Earle,5ulta A•stockton,CA 952(17 414.p08)956-0264•Fax(209)956.0700 <br /> �I <br /> September 19, 1994 <br /> 5CA4-03-923-02 <br /> Ms. Mary Ways j <br /> San Joaquin Cottiaty PHSfEIID <br /> p. 0. Box 388 <br /> Stockton, CA 95201 <br /> Subject: Ripon Flinn Serdce <br /> 22.871 South Highway 99, Ripon, CB[trorrtla <br /> i' <br /> Bear lois. Ways: <br /> 3} <br /> 1 In a letter dated July 7, 1994, the San JoacluiunPublic Health Services - <br /> Environmental Health Division (PHS/EII'D)states that t3 work'plan sbould be submitted by <br /> September 19, 1994"winch includes a proposal to further investigate the extent o soil and <br /> groundwater contamination" at the site. ill <br /> Quarterly monitoring and sampling was performed �y GeaAudit on August 5, 1994. <br /> GeoAudit is currently preparing a report detailing the prc endures and results of the <br /> monitoring and sampling. The report is scheduled to be submttted to the PHSIEHD on <br /> September 26, 1494, <br /> Results from the gradient and flow direction calculations collected is August indicate that <br /> the gradient direction is now northwest. Initially, the gradient was determined to be <br /> southwest(May 1994). Tl]e�refore,prior to the installation of a0ditaional monitoring wells at <br /> i. <br /> the site, GeoAudit proposes to measure the groundwater depth at the site on a moat* <br /> basis for the next quarter 'l he additional data will assist'4n determining the locations of any <br /> . future monitoring wells at the site. <br /> Representatives of Ripon Farm Service are in the process of reviewing State and County <br /> files on the Gemco "Truck Stop property, immediately north of the site. Underground <br /> storage tank informataon'from the Gemco site will be iticluded in the Quarterly Report to <br /> the PHSfEHD-The Gemco site represents a possible source of petroleum hydrocarbons for <br /> the surrounding area. <br /> 7P-fF1�41Y9G�Rw'J.R� <br /> f ,,t <br /> �.r <br /> I. <br /> Fill spectrum Environmontal Services-4ydrogeology <br /> .. 1 <br />