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44E�' --p-p- i"M I <br /> ggag— <br /> i r0i F2 gp p 6:5. <br /> -6- <br /> 1,ft-l"HAMM", M 7-0 MIN <br /> December 16, 1986 AGS 86102-1 <br /> Beacon Service Station 03-492 [Manteca, California <br /> These samples, I&be],d as indicated on the Boring Logs, were <br /> collected at approximately five foot intervals from the ground <br /> surface to total depth. sail samples were collected by advancing <br /> the boring to a point immediately above the sampling depth and <br /> then driving a modified California split spoon sampler (2/12 inch <br /> inside diameter) into the sail through the hollow center of the <br /> auger. The sampler was driven 18 iz!c'hes with a standard 140 <br /> Pound hammer repeatedly dropped 30 inches. The number of blows <br /> to drive the sampler each six inches were counted and recorded to <br /> q.Bvaluate the relAtive consistency of soil materials. <br /> The samples were removed from the sampler, immediately sealed in <br /> their brass sleeves with aluminum foil, plastic caps, and air- <br /> tight tape. The sealed samples were labeled and placed in iced <br /> storage. The <br /> Samples were delivered to Applied Geosystemsl <br /> laboratory for analytical testing. The Chain-of-custody form for <br /> the samples tested is included in the Appendix of this report. <br /> MONITORING WELL CONSTRUCTION <br /> Three ground water monitoring wells, NW-1, MW-2, andMw-3, were <br /> constructed at the site in soil borings B-1, B-2, and 8-3, <br /> t <br /> respectively. 'The wells were constructed--with--four-inch-.inside-. <br /> diameter, schedule 40, threaded polyv* <br /> inyl chloride. (PVc) casing. <br /> No -chemical cements.or solvents were used in <br /> well construction. <br /> 4 <br />