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a length of 2" slotted PVC well screen was placed in the hale to <br /> allow the collection of a water sample. <br /> After cleaning all of the equipment, <br /> rotary hammer was positioned <br /> over Auger Hole "D" , at the northwest end of the garage, about 25 <br /> ' <br /> feet east of Trench #4; see Plate VII for details. A 2" hole was <br /> advanced with the rotary hammer; soils encountered were primarily <br /> sandy clay, with some thin layers of sticky clay. The hole <br /> ' became damp near bottom, but water did not enter the hole. <br /> Boring continued to a depth of 7 ' , where a soil sample was taken <br /> using a clean brass tube placed in the sample sleeve holder which <br /> had been thoroughly steam cleaned prior to use. No odors or <br /> ' evidence of contamination were noted. <br /> At the completion of boring operations, water samples were <br /> ' collected from auger holes "H" , "E" , 11F118c aG" <br /> by lowering <br /> disposable teflon bailers inside the well screens and placing the <br /> water in clean, properly prepared glass vials. The vials were <br /> ' placed on ace with the previously collected brass tubes and were <br /> transported to the laboratory under proper chain of custody; <br /> (refer to Exhibit J, which also includes copies of the laboratory <br /> worksheets) . Upon completion of augerxng and sampling, all holes <br /> were filled with cement to the surface under the supervision of <br /> Mr. M. Inferna of the EHD. <br /> ' WORK DONE UNDER SECOND ADDENDUM TO WORKPLAN DATED JAM. 31 1992 <br /> A review of the laboratory analysis done on the above samples, <br /> (see Table III , ) showed that the limits of contamination had been <br /> ' determined to the northwest, north, northeast, and east of the <br /> site of the removed UST. However, measureabla amounts of <br /> Toluene, Ethylbenzene, Xylene, and TPH-G were detected in the <br /> ' soil sample from Auger Hole "A" , west of the LUST site, and in the <br /> water sample obtained from Auger Hole '=B". All other samples <br /> taken were below detection levels. <br /> ' In order to further define the lateral extent of the <br /> contamination, it was proposed to hand-auger additional borings <br /> to the west, south, and southeast; a copy of that Addendum is <br /> ' included as Exhibit K. <br /> Work began on January 16, 1992, using Del-Tech Geotechnical <br /> ' Services equipment and personel under the supervision of Wirt. <br /> Hunter, RG. Auger Hale "B-1" was measured off 20 feet due south <br /> of Auger Hole "B" , which was placed during the work performed on <br /> Nov. 21 , 1991; refer to Plate VII for its ' location in reference <br /> ' to prior work. A 3 1/4" hand-auger was used to advance the <br /> bearing; details of sediments penetrated are shown on Plot 3C and <br /> 7 <br /> 1 <br />