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Steamboat North Concrete Plant <br />GL 851 <br />SPCC Plan <br />40 CFR 112.7 (b) POTENTIAL EQUIPMENT FAILURE PREDICTIONS <br />RESULTING IN SPILLS: <br />Sob c~ ~e~o `' pI~II~R~ ~Rate;~t ;,Directio~ ;4C,ontair~~nents C;ontaipmentm- <br />} allur, y <br />Voluipe~, ,~~ 'aljonlhr t ~ ofaFlo~ir,« .~.Vol_ume~~, ~ ;,~;~s.~ <br />Above round Stora a Tanks <br />AST #1, Rupture; 12,000 gal. 12,000 gal/hr Southwest NA Double Wall <br />Diesel leaks e <br />Facilit Loadin IUnloadin O erations <br />Fuel Rupture; 3,000 gal. 3,000 gallhr Southwest 3,300 gallons Catchment <br />Truck leakage; Basin <br />Unloadin overfill Detention <br />Other Stora e <br />Drum Rupture; 55 gal. 55 gal/hr Southwest 55 gal. Steel trough <br />Storage Leakage <br />Area #1 <br />40 CFR 112.7 (c) CONTAINMENT AND DIVERSIONARY STRUCTURES <br />112.7 (cl(1 }(i) <br />AST 1's double walled construction provides secondary containment for each fuel cell <br />(split 8,000 / 4,000 gallons capacity), which stores diesel and off-road diesel fuel, <br />respectively. The drums are located inside a trailer with a spill trough as containment. <br />Both have adequate secondazy containment. The fuel cells on the concrete trucks and the <br />two front-end loaders are contained by the catchment basin that is provided by the <br />bermed area southwest of the plant. <br />112.7 (c)(1)(iiil <br />The loading/unloading area is graded so that any spill or overfill will drain into the <br />catchment basin (detention) southwest of the plant. Some product would accumulate in <br />small surface depressions and some would be expected to soak into the ground. The <br />entire amount of any release would be contained within the facility, even during a severe <br />storm. The catchment can contain 3,300 gallons, and is larger than the lazgest <br />compartment of the petroleum supplier's trucks, which normally have 3,000 gallons <br />maximum capacity. Due to the azeas evaporation rate, annual precipitation, fueling <br />occurrences, and the availability of remedial equipment, there should be no need for any <br />further engineering controls. <br />112.7 (cl(11(vil <br />Surface drainage is engineered so that oil spilled outside of curbed areas will drain to the <br />catchment basin created by the earthen berm southwest of the plant. The spill then can be <br />contained and remediated. See the facility diagram on Figure 1 for the stormwater /oil <br />flow directions. <br />12 <br />