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§ 112.8 Spill Prevention, Control, and Countermeasure Plan requirements for onshore facilities (excluding production facilities). If you are the owner or operator of an onshore facility(excluding a production facility), you must: (a) Meet the general requirements for the Plan listed under§112.7, and the specific discharge prevention and containment procedures listed in this section. (b)Facility drainage. (1) Restrain drainage from diked storage areas by valves to prevent a discharge into the drainage system or facility effluent treatment system, except where facility systems are designed to control such discharge.You may empty diked areas by pumps or ejectors; however, you must manually activate these pumps or ejectors and must inspect the condition of the accumulation before starting,to ensure no oil will be discharged. (2) Use valves of manual, open-and-closed design, for the drainage of diked areas.You may not use flapper-type drain valves to drain diked areas. If your facility drainage drains directly into a watercourse and not into an on-site wastewater treatment plant, you must inspect and may drain uncontaminated retained stormwater, as provided in paragraphs(c)(3)(ii), (iii), and (iv)of this section. (3) Design facility drainage systems from undiked areas with a potential for a discharge(such as where piping is located outside containment walls or where tank truck discharges may occur outside the loading area)to flow into ponds, lagoons, or catchment basins designed to retain oil or return it to the facility.You must not locate catchment basins in areas subject to periodic flooding. (4) If facility drainage is not engineered as in paragraph (b)(3)of this section, equip the final discharge of all ditches inside the facility with a diversion system that would, in the event of an uncontrolled discharge, retain oil in the facility. (5)Where drainage waters are treated in more than one treatment unit and such treatment is continuous, and pump transfer is needed, provide two"lift' pumps and permanently install at least one of the pumps.Whatever techniques you use, you must engineer facility drainage systems to prevent a discharge as described in §112.1(b)in case there is an equipment failure or human error at the facility. (c)Bulk storage containers. (1)Not use a container for the storage of oil unless its material and construction are compatible with the material stored and conditions of storage such as pressure and temperature. (2)Construct all bulk storage tank installations (except mobile refuelers and other non-transportation-related tank trucks)so that you provide a secondary means of containment for the entire capacity of the largest single container and sufficient freeboard to contain precipitation.You must ensure that diked areas are sufficiently impervious to contain discharged oil. Dikes, containment curbs, and pits are commonly employed for this purpose.You may also use an alternative system consisting of a drainage trench enclosure that must be arranged so that any discharge will terminate and be safely confined in a facility catchment basin or holding pond. (3) Not allow drainage of uncontaminated rainwater from the diked area into a storm drain or discharge of an effluent into an open watercourse, lake, or pond, bypassing the facility treatment system unless you: (i) Normally keep the bypass valve sealed closed. (ii) Inspect the retained rainwater to ensure that its presence will not cause a discharge as described in §112.1(b). (iii)Open the bypass valve and reseal it following drainage under responsible supervision; and (iv) Keep adequate records of such events,for example, any records required under permits issued in accordance with §§122.410)(2)and 122.41(m)(3)of this chapter. (4) Protect any completely buried metallic storage tank installed on or after January 10, 1974 from corrosion by coatings or cathodic protection compatible with local soil conditions.You must regularly leak test such completely buried metallic storage tanks. (5) Not use partially buried or bunkered metallic tanks for the storage of oil, unless you protect the buried section of the tank from corrosion.You must protect partially buried and bunkered tanks from corrosion by coatings or cathodic protection compatible with local soil conditions. (6)Test or inspect each aboveground container for integrity on a regular schedule and whenever you make material repairs. You must determine, in accordance with industry standards,the appropriate qualifications for personnel performing tests and inspections, the frequency and type of testing and inspections,which take into account container size, configuration, and design (such as containers that are: shop-built,field-erected, skid-mounted, elevated, equipped with a liner, double-walled, or partially buried). Examples of these integrity tests include, but are not limited to:visual