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tanks; one each from the east, north, and west walls, two from the south wall , and two from the bottom. The locations of the samples were chosen by Mr. Hunter, with the concurrence of Mr. Knoll . Each sample was properly sealed, labeled, and placed on ice by Mr. Hunter. Operations were completed at approximately 2: 00pm. The final configuration of the excavation, and the location of the samples are shown on Plate XIII . The preserved samples were transported to FOL laboratory under proper chain of custody; (refer to Exhibit J. ) The results of the analysis of the samples are shown on Tables IV & V. In the excavation which contained the gasoline & diesel tanks, some minor amounts of BTEX & TPH-D were present in the Htm-East sample, and a very small amount of Benzene was detected in the sample from the east wall ; all other samples showed no contaminants at tested levels. An analysis of the LUFT Manual Leaching Potential worksheet revealed that the concentrations of detected &TEX & TPH are far below the maximum allowable limits that are acceptable for leaving in place without threatening ground water. Therefore, no further work is required at this site. • The results of the laboratory analysis of the four samples from the waste oil tank, (Table V, ) revealed that the north side was clean, the east, south and west sides had unacceptable levels of TPH, (oil & grease, ) and the south sample had a very minor amount of Toluene. Because of the high levels of TPH, further work was indicated. On July 16, 19911 under the direction of Mr. Hunter, work commenced to remove additional spoil from the site of the waste oil tank , and resample for contamination. A large backhoe, operated by Jim Wagner, (an employee of Claude C. Wood Co. , ) began removing spoil from the west wall of the pit. The lithology consisted of fairly loose sands fir. gravels, with some well-rounded cobbles & clay layers. A weak petroleum odor and minor discoloration was noted. Approximately 2 feet of spoil was removed from the west side, and about 5 feet from the bottom; no evidence of contamination was noted at that point. Spoil was placed on the southwest side of the excavation. The backhoe was then relocated on the south side of the pit, and excavation continued, removing spoil - from the south wall . Sediments consisted of irregularly interbedded silty sands, clays, coarse gravels, and occassional cobbles. There was a definite petroleum odor and visible discoloration in the low permeability sands and clays; the coarser material appeared to be clean. Additional spoil was removed from the south side of the pit for approximately- I0-12 ' to a depth of 20 feet until all 6