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120 IM <br /> 11171cot <br /> PGS Job #8696-1 November 11, 1986 <br /> the ground surface. Approximately one foot of bentonite was <br /> Placed on top of the sand in order to Prevent cement from <br /> entering the sand pack, and the remaining annular space was <br /> filled with neat cement. A C.N.I. utility box was placed .over <br /> the well and set in concrete flush with the surrounding pad. <br /> Details of well construction are graphically illustrated in the <br /> attached Boring Logs. <br /> Drill cuttings were placed in four appropriately lined 55-gallon <br /> drums. These drums were sealed and left on site, and remain the <br /> responsibility of RAMCON. With RAIMCON's authorization, Applied <br /> GeoSystems can make arrangements for suitable disposal of the <br /> drill cuttings. <br /> Soil samples were collected at five fcot intervals during <br /> drilling through the use of a California modified split spoon <br /> sampler equipped with laboratory-clean brass sleeves, samples <br /> were collected by advancing the boring to a point'immedlately <br /> above the sampling depth and driving the sampler into the native <br /> soil through the hollow center of the auger. The sampler was <br /> driven 18 inches with a standard 140 pound hammer dropped 30 <br /> inches. The number of blows required to drive the sampler each <br /> successive six inch interval was recorded asan indication of <br /> soil. consistency. Samples collected were labeled and sealed with <br /> aluminum foil, plastic caps, and air-tight tape, and immediately <br /> placed in iced storage for transport to the laboratory. <br /> Two soil samples, S1 and S2, were collected from the tank <br /> excavation by removing the soil from the tank cavity with a <br /> backhoe. After brushing approximately six inches of loose soil <br /> from the surface of material in the backhoe bucket, the sample <br /> was collected by driving a six inch laboratory-cleaned brass <br /> sleeve into the soil. The .samples were then sealed and iced for <br /> transport in the manner described above. Four samples were <br /> collected from soil piles that remain at the rear of the <br /> warehouse. These were collected by removing approximately one <br /> foot of Loose soil from the outer part of the pile and driving a <br /> six inch brass sleeve into the soil to be sampled. <br /> Monitoring well Mw-1 was developed on November 3, 1986 by <br /> swabbing, air Jetting, and over pumping. Prior to development, a <br /> sample was taken from the ground water surface with a teflon <br /> bailer cleaned with acetone and distilled water. This sample did <br /> not show any subjective evidence of floating product, odor, <br /> sheen, or emulsion. Samples of the ground water were taken for <br /> chemical analysis after development and recovery to static <br /> conditions._ _The bailer was cleaned with acetone and distilled <br /> water after each use. <br /> ,4,Cl,DJ%e0� GrBD�ycSte/!1S .,_�. <br />