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septic tank, previously unknown, was also removed. An abandoned 12" pipeline discovered along west edge of property. Line was empty; origin, use, & ownership unknown Laboratory results of soil samples taken from bottom & side of excavation revealed the presence of TPH, (EPA 418. 1; ) no other test was run_ No further work was done - excavation left open. Refer to EXHIBIT__ C for details of that test. August. 198 - Five (5) auger borings were placed in an attempt to define the vertical & lateral extent of the contamination. The locations of the soil borings & other features are shown on PLATE VI , from the Dei-Tech report. 5B-1 went to 42' bgl; positive readings were noted in all samples taken from 5' to bottom when screened with a PID meter. BE & 3, both taken to 32' bgl, also gave positive readings from 5' to bottom. A water sample taken from SB-3 also showed the presence of hydrocarbon substances. _$B-4, which was taken to 37' bgl, recorded lower readings in samples from 10' to bottom. SB-5, which was taken to 37' , did not show any evidence of contamination. Three (3) 15' deep hand-auger borings were placed in & adjacent to the open excavation in order to further define the contami- nation. Their locations are shown on PLATE VI_ Hand boring #2, at the west end of the leach field & next to the rock well, revealed the presence of BTEX & TPH as diesel and motor oil; the other two were non-detect. The 3 hand auger borings were located inside of the existing excavation, which had not yet been back- filled. The depth of that pit is not given in the report covering that activity; it is assumed to be approximately 10' deep. If that is true, then the hand augers reached a vertical depth of approximately 25' below ground surface. Lithologxc plots of the five auger holes are included as PLATES VII thru XI _ The results of the laboratory analyzes are summarized on TAB For copies of the laboratory analyzsis sheets & custody chains, and a a more complete discussion of the results of this work, refer to the report titled "SOIL BORING & TESTING REPORT" dated 12/8/1993, prepared by Del-Tech Geotechnical Support Services & Geological Technics, Inc. Nove ber 1993 - Two soil samples were taken from the bottom of the open excavation 5' & 10 ' west of the second chamber of the concrete septic tank by an employee of Independent Trucking. The samples were taken using a clean stainless steel hand held auger equipped with brass sample tubes and driving the auger about 12" into the soil. The samples were analyzed for TEPH, (EPA 3540/ 8015M, ) for kerosene, diesel, & motor oil. The east sample was below detection limits; the west sample measured 20 mg/kg of TEPH, characteristic of motor oil/weathered diesel . A copy of that laboratory report is attached as EXHr$ � 4