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.,. the Environmental Protection Agency, the United States Coast Guard, the National Response Center and the Department of Transportation. No ERNS sites were identified within 1/8-mile of the property. GNTR is a listing of RCRA Large and Small generators of hazardous waste. A RCRA Large Generator is defined as a facility that generates at least 1000 kg/month on non-acutely hazardous waste. A RCRA Small Generator is a +'^ facility that generates less than 1000 kg/month of non-acutely hazardous waste. No GNTR sites were identified within 1/8 mile of the property. The review of the regulatory agency listing reports and contacts made with local regulatory agencies did not identify any sites other than the subject property. 3.2 Physical Setting The property is located in San Joaquin County west of the City of Stockton,and Sources South of the San Joaquin River. The property is situated approximately 4 miles a.. north of Highway 4. Based on the USGS Holt 7.5 minute quadrangle topographic map (photo revised in 1980) the approximate elevation of the property is 10 feet above mean sea level. Regional GeoloLyv The Central Valley constitutes a structural downwarp extending more than 400 miles from Redding on the north to the Tehachpi Mountains on the south; it has an average width of about 40 miles,and spans 15,000 sq.mi. or about one-tenth of the State. About the northern third of the valley is know as the Sacramento ` Valley and the southern two-thirds is known as the San Joaquin Valley. Drainage from the Sacramento Valley is southward through San Francisco Bay to the Pacific Ocean. The northern part of the San Joaquin Valley drains northward through the San Joaquin River but the southern part of the valley is a basin of interior drainage tributary to ephemeral lakes in the trough of the valley. The often nearly dry lake areas are known as Kern Buena Vista and +� Tulare Lake Beds. Low alluvial plains and fans that border the dissected upland along their w- valleyward margins are generally flat to gently undulant and are underlain by underformed to slightly deformed alluvial deposits of Pleistocene and Recent age. The river flood plains and channel lie along the Sacramento, San Joaquin, and Kings Rivers in the axial parts of the valley and along the major streams on the r,. eastern side of the valley. Those rivers that are incised below the general land surface have well-defined flood plains;but in the axial trough of the valley,the rivers are flanked by low-lying overflow land and there the flood-plain and channel deposits are confined to the stream channel and to the natural levees that slope away from the river. BLASLAND.BOUCK&LEE,INC. NEWria.WPD--s/7rv6 engineers & scientists 3-3