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01 August 2019 AdvancedGeo <br /> AGE Project No. 05-1278 Environmental <br /> Page 15 of 23 <br /> The content of the secondary containment berm is inspected by Facility personnel prior <br /> to draining to ensure that only oil-free water is allowed to discharge onto the Facility storm <br /> water drainage land area. Drainage events are recorded in the log included in Appendix <br /> G to this Plan. <br /> 4.2. BULK STORAGE CONTAINERS - 40 CFR 112.8(C) <br /> Table 8 summarizes the construction, volume, and content the of bulk storage containers <br /> at the Facility. <br /> 4.2.1. Construction - 40 CFR 112.8 (c)(1) <br /> All ASTs used at this Facility are constructed of steel, in accordance with industry <br /> specifications as described above. The design and construction of all bulk storage <br /> containers are compatible with the characteristics of the oil product they contain, and with <br /> temperature and pressure conditions. There is no piping between fixed ASTs. Piping of <br /> each product does have dedicated piping and pumps for dispensing. <br /> 4.2.2. Secondary Containment - 40 CFR 112.8(c)(2) <br /> The 1,000-gallon waste oil AST is double walled. The five fuel ASTs are double walled. <br /> A concrete pad with an internalized slope has been constructed around ASTs. The AST <br /> berm has a total containment area and discharge capacity, which is sufficient volume for <br /> the largest pipe and is designed to manage the precipitation around the AST. The <br /> concrete berm acts as a tertiary (third) containment system. The Facility is unattended for <br /> a maximum of 24 hours (Sunday overnight) and therefore any spill into the berm area <br /> would be detected before it could escape. Secondary containment of the various oil <br /> storage ASTs located within the maintenance shop, include land-based spill response <br /> and is contained with the building. Additionally, the maintenance pit also acts as tertiary <br /> containment in the event of a spill. <br /> The surface of the concrete floor, the inside and outside of the walls, and the interface of <br /> the floor and walls, are visually inspected during the monthly Facility inspection to detect <br /> any crack, signs of heaving or settlement, or other structural damage that could affect the <br /> ability of the berm to contain oil. Any damage is promptly corrected to prevent migration <br /> of oil into the ground, or out of the berm. <br /> 4.2.3. Drainage of Berm Areas - 40 CFR 112.8(c)(3) <br /> Berms are not drained at this Facility; therefore, this section does not apply. <br />