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Spill Prevention, Control and Countermeasure Plan Tesla Treatment Facility Page 38 of 45 high level is reached, the valve will close and cannot be reopened until the fuel level falls below the high level. Fuel delivery may be stopped anytime by manually pressing a close button on the control panel that then closes the fill valve. The liquid level sensors are alarmed and connected to the SCADA system and monitored by the facility operator on watch at the Operations Building. Should alarms be triggered, facility operators will follow-up to investigate and rectify the condition. The SimplexTM transfer pump system is also equipped with an high level and low level alarm when the system is in use. The fuel level in the two(2) generator day tanks is controlled by a float level gauge inside each tank. The gauge is set with a predetermined high and low level setting. The supply to the day tanks is controlled by the SimplexTM pump unit in the storage tank area. The fuel is drawn from the day tank by a fuel pump at a rate of 330 gallons per hour(gal/hr). The engine in each standby power generator consumes fuel at a rate of between 58 and 104 gal/hr, depending on the load, and the excess fuel is returned back to the day tank. In the event the fuel level within the day tank exceeds the high level mark, the excess fuel will flow back to the primary bulk storage tanks by means of the SimplexTM return pumps.The SimplexTM supply and return pumps each have a capacity of 10 gallons per minute (gal/min). There are two (2)pumps on each supply and return line and the maximum flow rate when both pumps are operating is 20 gal/min. The supply piping to each day tank is equipped with a solenoid valve outside the generator enclosure. The valve is normally in the closed position and operates only when the engine is running. This prevents fuel from entering the day tank system when the engine is idle. Facility operators are present throughout filling operations to monitor the product level in the tanks. To avoid discharges, the facility is engineered in accordance with good engineering practice and meets the requirements of 40 CFR§112.8(c)(8) of the SPCC Rule. The loading/unloading area on the south side of the bulk storage tanks provides for ground-level connection of the fueling truck fill hose and fueling port. The SimplexTM Automated FuelPort is equipped with a capture box for containment of potential spills or drips during fuel transfer. The system is equipped with automatic filling and overfilling protection control devices plus visual and audible alarms; a leak detection circuit that prevents filling of a leaking tank; and a controller that alerts the operator at the 90% fill level and lock-outs the filling operation at the 95% fill level. 3.3.9 Effluent Treatment Observations [40 CFR§112.8(c)(9)] 40 CFR§112.8(c)(9) of the SPCC Rule is not applicable because there is no effluent treatment at the Tesla Treatment Facility. 3.3.10 Correct Visual Leaks/Remove Accumulations [40 CFR§112.8(c)(10)] Any visual leaks or discharges from containers including but not limited to seams, gaskets,piping, pumps, valves, bolts, or rivets; which result in a loss of product that is observed by facility operators is immediately reported to the Chief Stationary Engineer and promptly repaired and corrected. In addition, any visual observations of product accumulations in secondary containments and surfaces are promptly reported and removed by facility operators in accordance with SPCC Plan requirements and Hazardous Materials Business Plan provisions.