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I'll 1201 Subsurface Investigation ResuEts 6131 Pacific Ave., Stockton, CA. Aegis Project 4Io. 90-020 Page 7 2.45 UTILITrES Prior to beginning any field. work, Underground Service Alert (USA) was be contacted and all underground utilities marked. Additionally, to prevent drilling through subsurface utilities, the first five feet of all borings were advanced by hand auguring techniques. 2.6.1 On-S3te U der ound Fti hies Underground utilities that service the Site include water, electric sanitary and storm sewer. Locations of the underground utilities are shown on Figure 4. Electric service is accessed from the western border of the Site by overhead wires to a 11tility pole. Electric service is provided to the kiosk 'via underground conduit from this Utility hone exists on the western edge of the sie , and itPole. A tiseassumedooth that t the booth is serviced by underground conduit that run along the west side of the site. Telephone service in the kiosk is most likely serviced by underground cables that run from the booth to the station building. The water and sanitary sewer access .the property at the northeast corner of the Site from Porter Avenue. 2.6.2 Off-Site Utilities Approximate locations of water, sanitary sewer, and storm sewer lines beneath servicing the site are shown on Figura 4. The City Of Stockton maintains sanitary and storm sewers. Cal Water maintains the water service. Pacific Gas and Electric maintains the natural gas and electric service in the area. 2.7 SITE BUESURFACE CONDITIONS Surface geologic strata in the vicinity of the Site consist of undifferentiated recent basin alluvium and units in the Victor Formation (DWR, 1967) . The strata were deposited in alluvial fan 'l and flood plain environments, and include lenticular gravel, sand, silt, and clay. The age of these deposits ranges from Pleistocene to Holocene. In the vicinity of the site these ` deposits are approximately 70 feet deep below grade.