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Cesar Ruvalcaba San Joaquin County Environmental Health Department Environmental Health Specialist 1868 East Hazelton Ave Stockton, CA 95205 2 (209) 953-6213 9 (209) 464-01381 2 cruvaIcaba@sicehd.com 2 ANJOA IN —COU NTY— ,r * Greutncss gro-s hers, From: Cesar Ruvalcaba [EH] Sent:Wednesday, October 10, 2018 2:39 PM To: jvernier@sewd.net Cc: mverduzco@sewd.net Subject: RE:APSA/SPCC inspection report-6767 E. Main St. - PR0537644 John, In case you do want to "permanently close"the generator, here are the requirements.This also answers the question of a tank being empty. 11. If an AST is "empty," is that still an AST? Yes, unless it is closed in a specific manner. If an aboveground storage tank is "empty" but will still or can readily be used to store a petroleum product (usually the same product that it previously contained), then this "empty" AST is still considered an AST, and is regulated under APSA. However, if the "empty" AST container meets the federal SPCC rule definition of "permanently closed," it is not captured under APSA. "Permanently closed," as defined in 40 CFR 112.2, refers to containers "for which (1) All liquid and sludge has been removed from each container and connecting line; and (2) All connecting lines and piping have been disconnected from the container and blanked off, all valves (except for ventilation valves) have been closed and locked, and (3)conspicuous signs have been posted on each container stating that it is a permanently closed container and noting the date of closure." If the AST can and will no longer be used to store a petroleum product, that AST is no longer subject to APSA, but the AST must be completely emptied, cleaned of all petroleum residuals, completely physically disconnected from all petroleum-containing piping, and the tank remarked/labeled appropriately. However, should this tank be used in the future for petroleum, it would become fully regulated again as a petroleum storage tank immediately upon any amount of petroleum being placed into the tank, and all SPCC-related requirements apply at that time. The SPCC plan should be maintained and updated as necessary to reflect the status of all regulated tanks Important Notes: A tank that has never stored oil at the facility would not be not counted until the tank is actually used to store oil. Empty tanks that previously held hazardous materials are also subject to requirements in the California Fire Code and Title 22 of the California Code of Regulations. FREE classes presented by NES Inc. are available to all San Joaquin County Hazardous Waste, Underground Storage Tank, and Aboveground Petroleum Storage Facility Business Owners and Operators. List and schedule of classes can be found here. 2