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Phase H Site Assessment Workplan/Health and Safety Plan October 1996 <br /> for the Lodi Rail/Multimodal Station Project No. E168-1 <br /> Lodi Rail/Multimodal Station Site <br /> Phase II Investigation - Workplan <br /> ' <br /> Background <br /> ' Site Location: <br /> Lodi Rail/Multimodal Station Site (Site) <br /> Approximately 50 South Sacramento Street to 28 North Sacramento Street, <br /> Lodi, CA <br /> The Site is bounded by East Elm St. on the north, Southern Pacific Railroad on the east, East <br /> Oak St. on the south, and North and South Sacramento Street on the West (See Figure 1, <br /> Vicinity Map). <br /> Client: <br /> City of Lodi <br /> 221 West Pine Street <br /> P.O. Box 3006 <br /> Lodi, CA 95241-1910 <br /> Current Property Owner: <br /> ' Southern Pacific Transportation Company <br /> One Market Plaza, Suite 912 <br /> San Francisco, CA 94105 <br /> General Site Information: <br /> Topography is relatively flat with elevations varying from approximately 52 feet at the north <br /> end of the Site to approximately 48.5 feet at the south end of the site. <br /> Geologic conditions consist of Pleistocene alluvial deposits. The alluvium is expected to <br /> ' consist of interbedded, poorly graded to well graded sand, medium dense, silty sand, sandy <br /> silt, sandy clay and clay. <br /> Nearby site investigations and ground water maps produced by the San Joaquin County Flood <br /> Control and Water Conservation District indicate that ground water may be encountered at <br /> a depth of 50 to 60 feet below the ground surface. The general ground water gradient appears <br /> ' to be to the south-southwest. Ground water in the downtown Lodi area is known to have <br /> been contaminated with chlorinated solvents, Perchloroethylene (PCE) and Trichloroethene <br /> (TCE). Off-site investigations suggest that this contamination extends beneath the Site. <br /> No known on-site subsurface investigations have been conducted. However, during a 1989 <br /> study to investigate the source of ground water contamination in the downtown Lodi area, the <br /> ' State of California, Regional Water Quality Control Board (RWQCB) conducted a soil gas <br /> survey, using a soil gas recording instruments. One such instrument was placed along North <br /> Sacramento Street between East Elm St. and East Pine St at a depth of 12 inches below the <br /> ground surface. The approximate test location is shown on Figure 2, Site Soil Gas Recording <br /> ff ESPANA GEOTECHNICAL CONSULTING <br />