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1] <br />C. Facility Drainage: <br />This facility is drained by sheet runoff. Runoff from the PG&E property flows <br />from the western half of the property through the yard into a ditch located at the <br />western perimeter of the service center. The water in the ditch empties into the <br />city storm drain system and then into a navigable waterway. The eastern half <br />drains to agricultural land to the east. <br />There are two dry wells in a 100'x120' area located at the southwest corner of <br />the yard. This area is as marked on the facility layout site plan Figure 2-1 and is <br />designated not to store any oil -filled equipment. A third dry well is located at the <br />southeast corner of the Office/Warehouse Building. With the existing grades, no <br />oil -water from the yard area reaches this dry well. <br />D. Adjoining Land Uses: <br />The service center is adjoined on the north by a PG&E Substation and agricultural <br />property. To the west are railroad tracks and a manufacturing plant. The property <br />to the east is agricultural land. The property to the south is an open field. <br />The nearest residential area is located 200 yards from the southwest corner of <br />the yard. There are no schools, hospitals or medical care facilities within a half <br />mile of the service center. <br />E. Prevailing Wind Direction: <br />The prevailing wind direction is from the west. <br />F. Spill Potential: <br />The oil filled equipment, storage containers, spill prevention techniques currently <br />utilized and the potential for oil spills are described in this section. Small spills <br />occurring during normal operation will be contained and cleaned up in accordance <br />with Section S.H. of this Emergency Plan. <br />1) Aboveground Fuel -Storage Tanks <br />a) The facility has two 1,000 -gallon aboveground storage tanks used for <br />storing diesel and unleaded motor -vehicle fuel, and they are located on <br />concrete slabs southeast of the Office/Warehouse Building. The tanks <br />are double -walled with a steel inner tank, an annular space, and an outer <br />concrete containment tank. The double -walled tank system provides <br />secondary containment for protection against tank leakage. There is a <br />visual inspection port for the annular space which is inspected <br />periodically for fuel. The exterior of the tanks are inspected daily for any <br />signs of leakage. <br />3-2 <br />