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Project No. 034-99039 Page No. 2 3.0 PROCEDURES AND FINDINGS The UST removal and soil sampling activities were condl,cted under the direction of Mr. Steve Sasson of the San Joaquin County Environmental Health Division (SJCEHD). The USTs were removed by ECI, Inc. and Krazan was present to observe field activities and collect the soil samples. Prior to Krazan's arrival at the site, the USTs were triple- insed in accordance with SJCEHD guidelines. Rinsate generated during the UST triple-rinsing was col ected and transported off-site for recycling by ECI of Richmond. California. The USTs were transportec to ECI of Richmond, California, for recycling. Documentation regarding UST destruction and rinsate d sposal are available from ECI, Inc. The USTs were observed to be of single-wall, steel construction an in fair condition, with no obvious holes. The i tank sizes, product contents, approximate capacity, and SJCEHD UST permit numbers are provided in Table 1. I TABLE I UST Data 707 East Yosemitc Avenue j Manteca, Calif Dmia February 18, 1999 Ta*Removal UST No. Product Volume Dimensions (feet) SJCEHD Permit. No. T-1 Diesel 8,000 gallons 8 X22.7 39-1466-3 T-2 Gasoline 8,000 gallons 8 X 22.7 39-1466-2 T-3 Gasoline 10.000 gallons 8 X 30 39-1466-1 The soils present in the UST excavation consisted of medium grained sand. Petroleum hydrocarbon (PHC) odors and soil discoloration were not noted in the UST excavation. Groundwater was not encountered during the excavation and tank removal proc dures. As directed by Mr. Steve Sasson, Krazan's representati e collected one soil sample from beneath each UST (S-1 through S-6) and beneath the dispensers ( -7 through S-9) on February 18, 1999. The relatively undisturbed samples from the excavation was obtained from a backhoe bucket using a brass sleeve, and from the dispenser using a slide hammer in accordance with SJCEHD guidelines. The soil samples were collected from a depth of approximately tt ree and one half feet beneath the bottom of the USTs and from approximately two feet beneath the dis erasers. Refer to Figure 1 for the soil sample locations. Two four-part composite samples were also collected from the eight soil stockpiles representing soils removed from the UST excavation (sa ples SP-1,2,3,4 and SP-5,6,7,8). KRAZAN &ASSOCIATES, INC. With Ten Offices Serving the Western United States 3499039.TR