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101 l 0 • REMOVAL ANO DISPOSAL Of USED UNDERGROUND PETROLEUM STORAGE TANKS 3 OSHA2 Regulations for Identifying Hazardous Waste (40 Occupational Safety and Health. Standards (29 CFR CFR 261) 1910.1000) Regulations for Hazardous Waste Generators (40 EPA CFR 262) Genera! Regulations for Hazardous Wute Manage- Underground Storage Tanks Regulations (40 CFR Ment (40 CFR 260) 280.11, 280.22) SECTION 2—TEMPORARILY OUT OF SERVICE 2.1 Applicability Underground petroleum storage tank systems are considered temporarily out of service if they are: (a) idle but will be returned to service within one year, (b) are awaiting abandonment in place, or (c) are awaiting removal. 2.2 Securing Tank Systems Tanks temporarily out of service must be properly secured for the period they will be out of service. Tanks may be considered properly secured if processed as follows: a. Observe all special precautions described in 1.3 through 1.3.2.2. b. Remove stored product from the tank using one of the following methods: 1. Drain all product lines into the tank, then remove all liquids from the tank. 2. Remove all flammable or combustible liquids with the exception of a sufficient quantity (approxi- mately four inches) to assure saturated vapor space. 3. When high water table or flooding conditions exist, remove all stored liquid and ballast the tank by filling with water. c. Cap the fill pipe, gauge pipe, tank truck vapor recovery fitting, and vapor return. Secure the tank against tampering. d'Cap the product lines at the service station island, or elsewhere if the pumps are removed, or leave the pumps connected and locked. Disconnect electric power to the pumps. e. Leave the vent line open. f. Consult the appropriate local, state, or federal agen- cies concerning regulatory notification requirements. SECTION 3—DISPOSAL IN PLACE 3.1 Criteria for Disposal In Place 3.1.1 This section describes a safe method for the in place disposal of underground tanks. Removal of the tank is preferred (see Section 4). Disposal of the tank in place should be considered in the following cir- cumstances: (a) because of the tank location adjacent equipment or structures may be damaged or weakened if the tank is removed, (b) removal may be physically impossible, or (c) removal may incur excessive costs: A determination of whether to dispose of a tank in place or to remove it will depend upon: (a) local regulations which may prohibit abandonment in place, (b) the loca- tion of the facility and tank, (c) the availability of equip - =Occupational Safety and Health Administration, U.S. Department of Labor, Washington, D.C. 20402. 'U.S. Environmental Protection Agency, 401 M Street, S.W., Washington, D.C. 20460. ment, and (d) cost. Additional considerations include the length of service the equipment has provided and its reuse or salvage value. 3.1.2 The federal Resource Conservation and Recovery Act (RCRA) (40 CFR 260-265) places restric- tions on disposal of certain residues that may be present in some underground storage tanks. Residues from tanks that have held leaded gasoline should be treated with extreme caution. Lead compounds and other resi• dues in the tank may be classified as hazardous wastes. All liquids and residues removed from the tank should be handled in accordance with appropriate federal, state, and local regulations. Product removed from the tank can usually be reused or recycled. 3.2 Procedures for Disposal in Place 3.2.1 Tanks may be effectively and safely disposed in place by using the procedures in 3.2.2 through 3,2.11.