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r I 10 February 1998 AGE-NC Project No. 96-0266 Page 2 of 4 dispenser had been utilized for diesel fuel. The dispenser was located directly east of the UST, above the tank. All the soil removed to uncover the tank was stockpiled around the UST excavation for sampling. The soil was then used to back fill the excavation and additional fill was imported to return the excavation to grade. Prior to removal of the diesel UST, the tank were triple rinsed by Norcal Oil of Turlock, California using a pressure washer. Approximately 350 gallons of rinseate were transported under manifest to Americlean Inc. of Silver Springs, Nevada (State Manifest Document No. 96641838). The San Joaquin County Fire Prevention Department was on hand to oversee the tank removal activities. Mr. Eric Trevena of the San Joaquin County Public Health Services - Environmental Health Division(PHS-EHD) was present at the UST removal. l After removal the tank was visually inspected. No holes were noted in the UST, which was subsequently transported to West Coast Equipment Company of Turlock for disposal. 3.0. UST SOIL SAMPLING Following removal of the tank and removal of a slab from the base of the UST excavation, an excavator was used to collect three soil sample from approximately 14 feet bsg at the ends and from the center of the former UST location (Figure 2). A total of eight soil samples were collected from the soil stockpile. Each soil sample was collected with a metric soil sampling hammer, loaded with a pre-cleaned brass sleeve. The brass sleeves were sealed with Teflon } plastic sheets and end caps which were tapped over the ends of each sample sleeve. Samples were collected by William Little a representative of AGE. The samples were labeled and placed in a chilled container. The samples were transported under chain-of-custody to McCampbell Analytical Inc. (MAI) of Pacheco, California, a state-certified analytical laboratory. The date and time soil samples were taken were noted on the.chain-of-custody form included with the attached laboratory report and quality control data. 1 The samples associated with the UST and the soil spoils pile were analyzed for total petroleum i 4 hydrocarbons quantified as diesel (TPH-d) and purgeable aromatics (benzene, toluene, ethylbenzene and total xylenes: BTE&X) in accordance with EPA methods 8015-modified for diesel and 8020 for BTE&X. ; i Advanced GeoEnviron mental,Inc. }