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1 1 Plate VI is a generalized map of the property showing the ' location of the UST in relation to other features. It was used to fuel company vehicles and other equipment. It had been tested for integrity in September, 1990, and was shown to be tight. it was in good condition when removed. The associated piping and ' fuel dispenser did not show any evidence of leaks or severe corrosion. Tank disposition tracking records are attached as Exhibit 8, and the tank tightness test records are shown in ' Exhibit C. SUMMARY OF PRIOR WORKi ' On October 19, 1992, Jim Thorpe tail , Inc. (JTO, ) filed an Appli- cation for Underground Storage Tank Closure Permit to remove a 1 ,000 gallon UST gasoline tank at the site; (Exhibit A. ) As noted ' above, the tank had been tested on 9-28-1993 by JTO, and was found to be within allowable tolerances. After receiving County approval , JTO removed the tank , dispensing unit & associated piping on 11-2-1992. While excavating on the north wall , a small lense of gray-colored clay was noted at about 2-3 feet depth, just below the fill material . It had a hydrocar- bon odor, but it was not determined whether the color was due to contamination, or was the natural soil color. ' Two soil samples were taken from beneath the removed UST at depths of 9.5 & 10 feet bgl ; (see Plate VII) and two (2) composite samples were taken from the removed spoil . The ' apparent area of contamination was not sampled. Required tests were for BTEX, EDB, TPH-G, and total lead. Laboratory analysis of the soil samples taken from beneath the ' UST and the spoil pile revealed that BTEX, TPH-G, and EDB were below detection limits. Total Lead was below detection limits in the two samples from beneath the tank, but was measured at 6.0 ' mg/kg in the composite spoil pile sample. The sample was then retested for soluble lead , (STLC; ) which showed that no soluble was present in the sample. Refer to Table I and Exhibit D for ' more details. The small amount of apparent contamination noted on the north wall of the former tank site was of concern to the County EHD ' staff , and verbal permission was given to excavate additional soil in a northerly direction to see if it could be removed. On November 11 , 1992, JTO removed approximately 25 cubic yards of spoil in a circular area to the north of the removed UST, vent stack & fuel dispenser. The petroleum smelling gray colored clay was stili present at distance of about 10 feet , an the north & ' east walls at a depth of about 4 feet. At this time, the County