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Spill Prevention Control and Countermeasure Plan Page 7 ALTAMONT CORRIDOR EXPRESS-RAIL MAINTENANCE FACILITY WKA No. 10114.02 June 20, 2017 Revised August 20, 2019 • Fuel dispenser; • Emergency shut-off switches; • Spill kit; and, • Detention basins. 3.3 Fuel/Oil Storage Description and Capacity i There are nine (9)ASTs located at the Facility. Each of the ASTs is located within a secondary containment feature that is equipped with an emergency vent, and spill containment with a sump, an internal drain, positive pressure seals, and valves. The internal drain is plumbed to the oil-water separator, which has a storage capacity of about 30,520 gallons. The valves are j kept in a `closed" position. The ASTs contents, secondary containment feature(s), location, and dispensing mechanisms are outlined as follows: • 20,000-gallon AST: This AST provides diesel fuel for locomotives being inspected and serviced within the Facility. The AST is connected through above ground/overhead piping to fuel dispensing pumps and nozzles within the service and inspection building within the Facility. The AST is located within a concrete secondary containment structure and is located near southeastern exterior corner of the maintenance building within the Facility. The fill port, electrical pumps, and emergency shut-off valve are also located within the secondary containment structure. An electronic tank monitoring system is located adjacent to the fill port. A sump and drain equipped with a valve are located within the secondary containment of the ASTs. The drains are plumbed to the oil/water separator. • 2,000-gallon ASTs (2): These ASTs are used to store locomotive engine oil. The southern AST contains locomotive engine waste oil derived from the activities completed within the maintenance building. Waste oil is plumbed into this AST through above- ground piping from the individual service bays. The northern AST contains locomotive engine oil and is supplied to the individual service bays within the maintenance building through above-ground piping. These ASTs are located within a fenced enclosure that is part of the maintenance building and located along the southern half of the eastern exterior wall. Each AST is supported on an elevated metal grate on concrete slap surrounding by a concrete containment sump. The ASTs have specific ports located along the southern exterior wall of the maintenance building that are used to filliremove oil from the ASTs. Each of these ports has an associated electronic tank monitoring 1 !