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Section 3: Introduction ' 3.1 Site Description ' The Site is located southeast of downtown Stockton, California, and extends in the north-south direction for approximately 2.5 miles (Figure 1), and includes the railyard area between Charter Way on the north, and Industrial Drive at the south. An unnamed ditch drains the eastern boundary of the Site, and extends from the northern entrance to the central portion of the Site, ' where the ditch joins with Duck Creek. Duck Creek runs parallel to the railyard for approximately 2,000 feet, at which point it turns west and enters a set of four culverts that route the creek under the tracks. Approximately one-third of a mile west of the Site, Duck Creek ' enters Walker Slough. 3.2 Background This Health and Safety Plan has been prepared to address petroleum hydrocarbon impacts at two areas within the Site. ' Culvert replacement at switch 014, near the August 2003 fuel release (Figure 2), has been proposed in order to eliminate the apparent source of petroleum hydrocarbons in water samples collected at this location, and to resume direct discharge to Duck Creek. Site investigation activities at this area have been documented in multiple reports, including the Site Assessment Report(Kennedy/Jenks 2005). ' The soil investigation is being conducted in the area north of the Repair-in-Progress (RIP) facility, and south of the 8th street entrance in order to assess soil conditions which may contribute to the detections of petroleum hydrocarbons in stormwater draining in to the ' unnamed ditch along the eastern boundary of the Site. Stormwater analytical data was documented in the Stormwater Monitoring Report(Kennedy/Jenks 2005b). Health and Safety Plan Page 4 Union Pacific Railroad Company, Stockton Railyard Site, Stockton, California g:ladminassryobs120031032111.16 union pacific-stockton yard109-reportO 09 reports12005_hasplhasp.doc