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1VE!SS ASSOCOTES <br /> Mr.John Randall 4 <br /> f* November 14, 1989 <br /> Each ground water sample was decanted into a 40 ml glass volatile organic analysis vial <br /> (VOA)with a Teflon septum,preserved with hydrochloric acid,sealed in a plastic guard bottle <br /> containing activated carbon pellets and refrigerated for transport to SuFerior Analytical <br /> Laboratory, Inc.of San Francisco,California. The water sample collection records and chain <br /> of custody forms are included as Attachments A and 13, respectively. <br /> A laboratory-supplied travel blank of certified organic-free distilled water <br /> accompanied the s;:nples to provide assurance that contamination was not introduced during <br /> sample bottle transport or storage. <br /> GROUND WATER GRADIENT <br /> Water levels for all monitoring v,ells were measured on October 5, 1989. Ground water <br /> elevations are presented in Table 1,and ground water elevation contours are plotted an Figure <br /> j 2. Wat!ir elevations in n1i mot:itoring wells on site have dropped consistently since February <br /> 191,R9 jeopardizing the reliability of representative water level measurements in monitoring <br /> wells MW-1, MW-3, MW-4, MW-6 and MW-7. Historically, the general ground water flow <br /> direction is northerly. Presently,there appears to be a ground water mound near the center of <br /> the site, with flow radially outwards from the central area of the site. <br /> ' i <br /> —11=11 go M11110man ns,owl <br />