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i <br /> 1 <br />' County to monitor groundwater depths. <br /> PRIOR USE OF REMOVED UST: <br />' PLATE VI is a generalized map of the property showing the <br /> location of the UST in relation to other features. The tank was <br /> used to fuel company vehicles and other equipment. It had been <br /> tested for integrity in September, 1990, and was shown to be <br /> tight. It was in good condition when removed The associated <br /> piping and fuel dispenser did not show any evidence of leaks or <br /> severe corrosion. Tank disposition tracking records are attached <br />' as EXHIBIT A, and the tank tightness test records are shown in <br /> EXHIBIT $� <br />' BRIEF REVIEW OF PRIOR WORD: <br /> In November, 1992, Jim Thorpe Oil, Inc. (JTO, ) removed a 1 , 000 <br />' gallon OST gasoline tank, dispensing unit & associated piping <br /> from the site; (a copy of the permit is attached as EXHIBIT C.s,) <br /> While excavating on the north wall , a small Tense of gray-colored <br /> clay was noted at about 2-3 feet depth, just below the fill <br /> material.. It had a hydrocarbon odor, but it was not determined <br /> whether the color was due to contamination, or was the natural <br /> soil color. <br />' Two soil samples were taken from beneath the removed UST at <br /> depths of 9. 5 & 10 feet bgl ; (see PLATE V,I�;) and two (2) <br />' composite samples were taken from the removed spoil. The <br /> apparent area of contamination was not sampled. Required tests <br /> were for BTEX, EDB, TPH G, and total lead. <br />' Laboratory analysis of the soil samples taken from beneath the <br /> UST and the spoil pile revealed that BTEX, TPH-G, and EDB were <br /> below detection Limits. Total Lead was below detection limits in <br /> the two samples from beneath the tank, but was measured at 6. 0 <br /> mg/kg in the composite spo-1l pile sample. The sample was then <br /> retested for soluble lead, (STLC; ) which showed that no soluble <br /> was present in the sample. Refer to TABLE I and EXHIBIT D for <br /> more details. <br /> The small amount of apparent contamination noted on the north <br /> wall of the former tank site was of concern to the County EHD <br /> staff, and verbal permission was given to excavate additional <br /> soil in a northerly direction to see if it could be removed. <br /> On November 11 , 1992, JTO removed approximately 25 cubic yards of <br /> spoil in a circular area to the north of the removed UST, vent <br /> stack & fuel dispenser. The petroleum smelling gray colored clay <br /> 3 <br /> y <br />