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06 July 1998 AGE Project No. 97-0381 Page 2 of 3 Prior to removal of the fuel USTs, the tanks were triple rinsed by AGE, using a pressure washer and alconox solution. Additionally, the UST which contained product transmission oil (fluid) was triple rinsed by AGE, using a pressure washer and alconox solution. The liquid contents of the waste oil UST was removed and an attempt was made to removed the solids from this UST. Approximately 100-gallons of sludge and dirt were lodged in the UST and could not be removed. Approximately 700 gallons of rinseate were transported under manifest to Americlean Inc. of Silver Springs, Nevada (State Manifest Document No. 97338540) by Norcal Oil of Turlock, California. An inspector of the City of Stockton Fire Department was on hand to oversee the tank removal activities. After being removed, the tanks were visually inspected and appeared to be intact, with no holes or extensive corrosion noted. The three of the gasoline tanks were subsequently transported to West Coast Equipment Company of Turlock for disposal. One of the small tanks was scheduled to be removed in July and the UST with sludge is planned to be disposed of as hazardous. SOIL SAMPLING Following removal of the tank, a backhoe was used to collect a soil sample from 2 feet below the ends of the former USTs (Figure 2). Two samples were collected from each large UST and one sample was collected from each small UST. One soil sample was collected from the area of the former dispenser. Soil samples were collected from each of the soil stockpiles. Each soil sample was collected with metric soil sampling hammer, loaded with a pre-cleaned brass sleeve. The ends of the brass sleeves were sealed with a Teflon plastic and end caps were tapped over the ends of each sample sleeve. Samples were collected by a representative of Precision Enviro-Tech of Stockton, California, a state-certified analytical laboratory. The samples were labeled and placed in a chilled container for subsequent transport. 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. The samples associated with the gasoline USTs, dispenser and the soil spoils pile were analyzed for total petroleum hydrocarbons quantified as gasoline (TPH-g), purgeable aromatics (benzene, toluene, ethylbenzene and total xylenes: BTE&X) and lead in accordance with EPA methods 8015-modified for gasoline and 8020 for BTE&X and EPA methods 7421 for lead, for the oxygenating fuel additives tertiary butyl alcohol (TBA), di-isopropyl ether (RIPE), ethyl tertiary butyl ether (ETBE) and tertiary amyl methyl ether (TAME) in accordance with EPA method 8260b.