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Phase I Environmental Site Assessment <br /> Neighborhood G <br /> Page 10 <br /> 5.2 GENERAL SITE SETTING <br /> The Site is located in the Great Valley Geomorphic Province on the western side of the central San <br /> Joaquin Valley. The San Joaquin Valley is a northwest-trending, fault-bounded geosyncline filled with up <br /> to six vertical miles of lithified non-marine and marine sediments and non-lithified non-marine sediments. <br /> Regionally, the lithology of the upper 3,000 feet of alluvial sediments are derived from the marine and <br /> non-marine sediments and Franciscan granitic basement rocks of the Coast Range Mountains to the west <br /> and the granitic basement rocks of the Sierra Nevada Mountains to the east. The Coast Range Mountains <br /> are approximately 2 miles west of the Site and the Sierra Nevada Mountains are approximately 50 miles <br /> northeast of the Site. <br /> The native soil in the area consists generally of the Stomar clay loam, which is a very deep, well-drained <br /> soil that is formed in alluvium derived from mixed rock sources. According to published geologic maps, <br /> surface deposits underlying the Site consist of Quaternary alluvial fan deposits. <br /> 5.3 EXTERIOR OBSERVATIONS <br /> The Site consists of agricultural fields with an unlined irrigation canal running from the northwestern <br /> corner of the Site to the creek in the southeast. The northern and western areas are planted with corn and <br /> alfalfa. The area to the east is a cornfield with a small cattle stockyard. Mountain House Creek runs along <br /> the southeastern boundary of the Site. The southern area is also planted with corn. To the west is corn and <br /> alfalfa. The terrain of the Site is nearly level. The following items were not observed at the Site during <br /> the Site reconnaissance unless otherwise noted below: <br /> 1. Source of potable water <br /> 2. Sewage disposal <br /> ' 3. Hazardous substances and petroleum products in connection with identified uses <br /> 4. Storage tanks <br /> 5. Odors <br /> 6. Pools of liquid <br /> 7. Drums <br /> 8. Hazardous substances and petroleum products containers <br /> 9. PCBs <br /> 10. Unidentified substance containers <br /> 11. Stained soil or pavement <br /> 12. Pits,ponds or lagoons <br /> 13. Stressed vegetation <br /> 14. Solid waste <br /> 15. Waste water <br /> 16. Wells <br /> 17. Debris <br /> 5.4 INTERIOR OBSERVATIONS <br /> There are no structures on the Site. <br /> 6.0 INTERVIEWS <br /> 6.1 INTERVIEW WITH OWNER <br /> Deferred to the Site Manager. <br /> %C4 <br /> w <br /> is CONDOR <br />