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was still present at distance of about 10 feet, on the north & <br /> east walls at a depth of about 4 feet. At this time, the County <br /> EHD representative stopped the work, and requested additional <br /> samplling. Two (2) soil samples were taken from the northeast <br />' wall at depths of 4' and 7' by Geo-Analytical Laboratory; the <br /> upper sample was taken from the gray clay, the lower one imme- <br /> diately below it at 7' . Refer to PLATE VII for details <br /> Laboratory results of those samples, (TABLE 11 & EXHI <br /> MBMT E <br /> revealed that BTEX, EDB, TPH-G, and total lead were all below <br /> detection limits in the sample taken at 7' , (S1 . ) A small amount <br /> of Xylene was present in the soil sample taken at 4 ' , (S2; ) all <br /> other components tested were below detection levels. The removed <br /> spoil was returned to the hole. <br /> IAfter reviewing the results of the above work, the County EHD <br /> stated that site closure could not occur and that additional work <br /> would be required; refer to EXHIBIT F for documentation. <br /> At this point, Wm. J. Hunter & Associates, (WJH, ) was retained to <br /> evaluate the situation and prepare a workplan for site cleanup. <br /> WJH prepared a workplan on Feb. 11 , 1993, to remove additional <br /> spoil from the site and take appropriate samples. A copy of that <br /> workplan is attached as EXHIBIT G. <br /> I <br /> DISCUSSION OF OPERATIONS PEFORMED UNDER WJH WORKPLAN: <br /> Work commenced on April 6, 1993, under the direction of Wm. <br /> Hunter, RG; equipment was operated by Jamie Thorpe & Richard <br /> Thorpe from Jim Thorpe Oil. Operations began by removing spoil <br /> from the west side of the existing excavation using a backhoe; <br /> the spoil was placed on plastic at a site to the northwest of the <br /> Pit. Soils consisted of gray to tan to brown sandy clays, clayey <br /> sands, & sticky dark gray plastic clays. Bedding planes were <br /> indistinct, dipping to the south at about 15 degrees. Some <br /> irregular beds of greenish-black clay were removed; some portions <br /> had a faint petroleum odor, while other portions did not. <br /> Excavation continued from the west wall, and all evidence of <br /> contamination was removed. While excavating at a depth of about <br /> I 6 1/2 to 7 feet, water began seeping into the bottom Clean soil <br /> was stored at the northeast side of the area, separate from the <br /> contaminated spoil. <br /> The backhoe moved to the south part of the hole, and continued to <br /> remove material from the site; soils consisted of a mixture of <br /> clays & sandy clays. Water continued to seep into the hole; the <br /> 4 <br />