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' • • Project No. 034-03032 ' Page No.2 ' Prior to Krazan's arrival at the site, the USTs were triple-rinsed in accordance with SJCEHD guidelines. Based on conversations with Mr. Neil Heely of Kroeker during the July 25, 2003 field activities, the USTs were to be transported offsite under hazardous manifest to ECI in Richmond, California. Certificates pertaining to the proper disposal of the rinsate and USTs are available from PG&E or Kroeker. The USTs were observed to be of double-wall steel construction with fiberglass wrapping and in good condition with no rust and no visible holes. The tank size, product contents, and approximate ' capacities are provided in Table 1. TABLE ' UST Data 66 Ranch Road Milpitas,California July 9, 2003 ' UST No. Product Volume(gallons) Dimensions(feet) T-1 Diesel 3,000 5 x 18.5 ' T-2 Gasoline 3,000 5 x 18.5 No petroleum hydrocarbon odors were noted in the UST, piping or dispenser excavations. No soil ' discoloration was noted. Groundwater was not encountered during the excavations and USTs removal activities. As directed by the SJCEHD's representative, Krazan's representative collected sixteen soil samples on July 25, 2003. Fourteen soil samples were collected from the three stockpiles generated during the excavation. One soil sample was collected from the bottom of the piping/diesel dispenser excavation, ' and one soil sample was collected from the bottom of the gasoline dispenser excavation. On July 29, 2003, six additional soil samples were collected from the UST excavation. Four of the July 29,2003 soil ' samples (T-1, T-2, T-3, and T-4)were collected at the edges of a portland cement concrete slab that was underlying the USTs. The other two July 29, 2003 soil samples (T-5 and T-6) were collected at approximately two feet below the USTs. The soil samples were obtained within brass sleeves collected from the backhoe bucket and stockpiled soils in accordance with SJCEHD guidelines. Refer to the ' Figure 1 for the soil sample locations. ' Following sample collection, the ends of the sample sleeves were covered by Teflon° film, sealed with right fitting plastic caps and wrapped in Teflon° tape. The sample sleeves were labeled and placed in an insulated chest, which contained ice to minimize loss of volatile constituents. The samples were then transported under chain-of-custody protocol to a State-certified analytical laboratory for analysis. As ' KB ZAN &ASSOCIATES,INC. Offices Serving the Western United States 3407032 lank Removal.doc