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PLATE VU is a generalized map of the property showing the location of the UST in relation to other features The tank 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 EXILIBIT A, and the tank tightness test records are shown in EXBLB= D� BRIEF REVIEW OF PRIOR WORK In November, 1992, Jim Thorpe Oil , Inc (JTO, ) removed a 1 , 000 gallon UST gasoline tank, dispensing unit & associated piping from the site, (a copy of the permit is attached as EXHLBIC j While excavating on the north wall , a small lense of gray-colored clay was noted at about 2-3 feet depth, gust below the fill material It had a hydrocarbon 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 ELATE =) 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 spoll 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 I&BU T and EXHIBIT .) 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 25 , 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 still present at distance of about 10 feet, on the north & east walls at a depth of about 4 feet At this time, the County EHD representative stopped the work, and requested additional sampling Two (2 ) soil samples were taken from the northeast • wall at depths of 4 ' and 7 ' by Geo-Analytical Laboratory, the 3