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p «-a Based on these boring sample results, Laura Scudders re that they be allowed to remove soils to a depth de twenty requested below grade and stoc},,pi the removed soils on-site. �.. permission to p Y q Proceed was granted b the San Joa uin Local Health al Department, Excavation of the additional soils from beneath the previous location at tank T2 was completed on December 23 removal of the additional soils, upon samples and three stockpile soil samples two excavation, soil sampling activities bottom 1987. U were collected. These were observed by personnel from the San Joaquin Local Health Department. During the sample collection southern most excavation bottom effort, the inspector made a note that odors were emitted by the so sample. Note was also made that the stockpiled excavated soils were emitting odors. All of the soil samples were analyzed by Trace Analytical Labora- tory. Both excavation bottom soil samples contained no detect- able amounts of either TPH or BTX&E compounds. The stockpiled soil samples, however, contained ranging from 150 mg/Kg to 1,200 mg/Kgsignificant levels of TPH, . Upon receipt of the analytical results, Laura Scudders requested permission to backfill the tank removal area. Verbal permission was granted by the San Joaquin Local health De surface. partment. In early ed and 1988, the tank area was backfillcovered with an asphalt 2.2 Tank T3 Tank T3 was a 12,0oo gallon diesel storage tank located directly adjacent to the west side of tank T2. This tank had been integ- rity tested in 1987 and had tested tight. The decision to remove this tank was based on an effort to reduce Laura Scudder's environmental liabilities in the forthcoming sale Of the proper- ty. The tank and associated piping were removed between May 17, 1989 and May 30, 1989. A total of 16 soil samples were collected during this tank/pipeline removal effort. Three tank bottom soil sample and 13 pipeline soil sampleswere collected. These samples were analyzed by ROY F. WESTOw s Analytical Laboratory in Stockton, California. Analysis for the TPH within these soil samples indicated only trace concentrations. For one tank bottom sample, MT-B,K TPH 17 of TPH was detected. For Pipeline sample P12-B, 24 m, mg/Kg was detected. g/ g of TPH For the BTX&E compounds eight pipeline soil samples exhibited detectable levels of tol'. -ne. The concentrations detected ranged from 0.036 mg/Kg to 0.32 mg/Kg.