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is f \ film an the water surface. The hole was widened to about 25' X 25'9 and deepened to a depth of approximately 20' at the south end and about 23-24' at the north and. Although there were still some odors evident, the limits of the equipment prevented further excavation„ Six (6) samples were taken from the "teeth of the backhoe bucket under the direction of Mr. Hunter & Mr. Knoll as indicated an Plates IX & X. They were properly sealed, labeled, and placed on ice by Mr. Hunter, stored overnight under refrigeration, and transported to Canonie Lab the Following day under proper chain of custody, (refer to Exhibit E. ) All spoil waw stored at the west end of the property adjacent to Beckman Road, and properly covered with plastic. Analysis of the laboratory results revealed that the sidewall samples taken from the sc;uth, west, and north walls, (SW-1, SW-2, k & SW-3,) and the west bottom sample, (B-1,) were below detection limits for tested substances. However, the east bottom sample, (B-21) and the east sidewall sample, (SW--4,) still contained measurable levels of Toluene, Ethylbeneene, Xylene, and TEPH; �! (refer to Table II for details. ) A review of the data indicated that additional spoil removal ..opeared to be the most cost--effective method of removing the residual contamination. On September 24, 1990, an Addendum to the April 4 work pian . was sCimitted by elm. J. Hunter & Associates, proposing to move in larger excavating equipment and enlarge the existing hole to the south and east in an attempt to clean up the site; (refer to Exhibit C for details. On Octaber .10, 1990, Jim Thorpe Oil moved in larger equipment and after breaking up and removing concrete from the southeast end of the excavation, began to remove spoil according to the workplan, under the direction of Mr. Hunter & Steve Schneider of the SJCLHD. Spoil was placed adjacent to the existing piles located at the west end of the property. The sediments consisted primarily of slightly damp, tan to buff-colored sandy loam, with accassional pods or lenses of very clayey gray silty sand. A very faint petroleums cdar was infreque,itly noticeable, but dissipated quickly upon exposure to air. No free product was r noted in any of the spoil, and no color was noted on samples placed in water. The sediments were generally dry; minor ;q moisture that was encountered soon evaporated_.when __.-_exposed_-to__ - - air. o ree water- ar other evidence of groundwater was noted. x . After reaching the approximate centiguration as shown on Plates XI fa XII,. it was agreed by Mr. ,Hunter & Mr. Schneider to take 3 L, - - 3