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begun removal of the waste oil tank with the on-site bulldozer. The Evans crew had perforated the tank with the teeth from the bulldozer and oil sludge had begun to ooze from the perforations. The Erickson Inc. crew arrived and the decision was made to stand the tank on end to halt the leakage. Shortly thereafter, Mr. William Anderson of San Joaquin County arrived and we discussed the sludge seepage. It was decided to bring an Erickson Inc. container truck to transport the waste oil tank. During the discussion, the sand filled tank (T-7) was removed. A backhoe was brought on-site by Evans Brothers Inc. to assist in the tank ! ; removal. While removing T-7, two additional sand filled tanks were dis4overed. i . The situation was discussed with Mr. Anderson and he authorized the removal/disposal of the two newly discovered sand filled ,w tanks. These tanks were then r--moved and designated T-8 and T-9. k At 2:30 pm, the local health department official arrived and supervised the collection of soil samples from beneath tanks T-6, r" T-7, T--8 and T--9. One soil sample from beneath each tank area was gathered. The samples were taken one foot beneath the front (south side) one-third of the tank area. This was approximately 7 ' below the surface grade. The samples were taken by hand shoveling a 1' hole and then driving a clean brass tube into the soils until the tube was full. The tube was then sealed with aluminum foil and plastic end caps. The sampleswere labeled accordingly and placed in an ice chest for shipment to the WESTON Stockton Lab. The samples were labeled for the following analy- sis: TPH, BTX, EDB, Organolead and Solvents. In addition to these parameters, the soil sample from beneath T-6 was to be analyzed for PCB's. Once the samples were takes:, tanks T-7 and T-9 were loaded onto an awaiting truck. While these tanks were being loaded, the matter of the leaked oil sludge was discussed with Mr. Anderson. The decision reached was that a soil storage bin would be deliv- ered and the soils would be stored within the bin. Also, a r sample was taken of the sludge drenched soils in a brass ti;;;e and was also delivered to the lab. This sample was to be analyzed for PCB's, Solvents and BTX. Disposal of the sludge soils stored l ` in the bin would await the results of the analysis of the sludge soils sample. Tank T-8 remained on-site until another truck could pick it up �.. which occurred on May 9, 1988. After completing the tank removal, the backhoe was then used to probe the far south east corner. This was done to see if any additional tanks existed. None were found. }