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2.0 Above Ground Tank Assessment The following assessment is based upon visual observation of the above ground storage tank (AST) and appurtenances, interviews with facility management and review of background information regarding the AST design and installation (copies of which are provided as an attachment to this Report). Each following subsection provides the relevant information used to certify compliance with the specific subsection of 22CCR §66265.192. 2.1 Tank Configuration, Material of Construction and Gross Capacity The AST is a horizontal double-wall steel tank, John Dow Industries Model AGS -285D, with a gross capacity of 285 gallons. See John Dow Industries catalog page 2 attached. The tank is located at the building interior at the southwest corner of the structure. 2.2 Design Standards Design standard(s), if available, according to which the tank and ancillary equipment were or will be constructed. According to the tank manufacturer (Atlantic Fabritech) letter attached, the tank was designed, constructed and listed in accordance with Standard UL 142, Steel Aboveground Tanks for Flammable and Combustible Liquids. 2.2.1 Material of Construction Field observation confirmed the AST to be fabricated from mild steel. 2.2.2 Material Thickness and Method Used to Determine the Thickness The attached email response from John Dow Industries indicates the wall thickness of the outer and inner tank is 12 gauge. The wall thickness of the outer tank was measured at 3/32" in the field. This measurement correlates with the reported 12 gauge. 2.2.3 Description of Tank System Piping (material, diameter) There is an approximately 7 foot section of black rubber hose which connects to the external pump. A short length of 1" hose connects to the suction port of the external pump at the top of Above Ground Storage Tank Professional Engineer Certification Page 2