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FIELD ACTIVITIES On April 27, 1992, Scrivner, under contract to Kleinfelder, removed the pavement and soil cover over the tank. Due to water lines along the west and south sides, Scrivner excavated only along the north and east sides of the tank to free it for removal. Due to the presence of the water lines mentioned above, the service and vent lines were left in place from the edge of the excavation to the previous location of the pump. On April 28, 1992, Scrivner removed the tank with the approval of the local fire marshall and SJCEHD. Upon removal, the tank was visually inspected by Kleinfelder and Mr. Bill Snavely (SJCEHD). The tank appeared to be in food condition. Although approximately 40 percent of the tank appeared rusted, the remainder of the tank retained its black paint finish. No holes, dents, tears, or scrapes were observed. Approximately 50 cubic yards of soil were removed from the tank excavation and stockpiled on site. The tank was transported by Erickson Tank Company, under hazardous waste manifest, to the Erickson facility at 255 Parr Avenue in Richmond, California. The tank was subsequently decontaminated and destroyed. Copies of the hazardous waste manifest and the certificate of destruction are attached. Based on the analytical, results (reported below), the excavation was backfilled with pea gravel and paved to match the existing road surface, and the stockpiled soil from around the tank was removed as clean fill by J.T. Paving for use on their yard at 915 East Market Street in Stockton, California. VERIFICATION SAMPLING Based on SJCEHD criteria, one soil sample was collected from each end of the stockpiled soil (#70984W and #70985E), and one soil sample was collected from beneath each end of the tank (#70986W and #70987E). Due to the presence of the water lines near the pump (removed) and service lines (existing) and the relatively short distance from the pump to the tank (approximately 8 feet), Mr. Snavely and Ms. Turkette (SJCEHD) approved Kleinfelder's request that a soil sample not be collected beneath the piping. Soil sample #70984W was collected at a depth of approximately 1.5 feet from the west end of the soil stockpile. Soil sample #70985E was collected at a depth of approximately 1.5 feet from the east end of the soil stockpile. Soil sample #70986W was collected at a depth of approximately 14 feet from the west end of the tank excavation (vent/service end). Soil sample #70987E was collected at a depth of approximately 15 feet from the east end of the tank excavation. The four soil samples consisted of sandy silt. The samples were collected by driving a 6 -inch brass tube into the soil in the stockpile or into the soil collected in the backhoe bucket. Upon removal, each tube was sealed with Teflon sheeting and plastic caps, labeled, logged on a chain -of -custody, and stored in an iced cooler for transport to the analytical laboratory. The samples were transported on April 28, 1992 by courier to Superior Precision Analytical, Inc. (Superior) in Martinez, California. Superior is certified by the State of California for the requested analyses. Each sample was analyzed for purgeable TPH, BTEX, EDB, and total lead. The samples were submitted on a rush turnaround schedule requiring 24 to 48 hours for reporting of analytical results. FR3-92-34 Page 2 of 3 Copyright 1992 Kleinfelder, Inc. KLEINFELDER 3077 Fite Circle, Sacramento, CA 95827 (916) 366-1701