NR 440.285(2)(e)(e) “Gasoline service station” means a site where gasoline is dispensed to motor vehicle fuel tanks from stationary storage tanks.
NR 440.285(2)(f)(f) “Maximum true vapor pressure” means the equilibrium partial pressure exerted by the volatile organic compounds (as defined in 40 CFR 51.100) in the stored VOL at the temperature equal to the highest calendar-month average of the VOL storage temperature for VOLs stored above or below the ambient temperature or at the local maximum monthly average temperature as reported by the national weather service for VOLs stored at the ambient temperature, as determined in one of the following ways:
NR 440.285(2)(f)1.1. In accordance with the method described in American Petroleum Institute Publication 2517, Evaporation Loss From External Floating Roof Tanks, incorporated by reference in s. NR 440.17 (2) (c) 1.
NR 440.285(2)(f)2.2. As obtained from standard reference texts.
NR 440.285(2)(f)3.3. As determined by ASTM Method D2879-97, incorporated by reference in s. NR 440.17 (2) (a) 34.
NR 440.285(2)(f)4.4. As determined by any other method approved by the administrator.
NR 440.285(2)(g)(g) “Petroleum” means the crude oil removed from the earth and the oils derived from tar sands, shale and coal.
NR 440.285(2)(h)(h) “Petroleum liquids” means petroleum, condensate, and any finished or intermediate products manufactured in a petroleum refinery.
NR 440.285(2)(hm)(hm) “Process tank” means a tank that is used within a process, including a solvent or raw material recovery process, to collect material discharged from a feedstock storage vessel or equipment within the process before the material is transferred to other equipment within the process, to a product or by-product storage vessel, or to a vessel used to store recovered solvent or raw material. In many process tanks, unit operations such as reactions and blending are conducted. Other process tanks, such as surge control vessels and bottoms receivers, however, may not involve unit operations.
NR 440.285(2)(i)(i) “Reid vapor pressure” means the absolute vapor pressure of volatile crude oil and volatile nonviscous petroleum liquids except liquified petroleum gases, as determined by ASTM D323-94, incorporated by reference in s. NR 440.17 (2) (a) 11.
NR 440.285(2)(j)(j) “Storage vessel” means each tank, reservoir, or container used for the storage of volatile organic liquids but does not include any of the following:
NR 440.285(2)(j)1.1. Frames, housing, auxiliary supports, or other components that are not directly involved in the containment of liquids or vapors.
NR 440.285(2)(j)2.2. Subsurface caverns or porous rock reservoirs.
NR 440.285(2)(j)3.3. Process tanks.
NR 440.285(2)(k)(k) “Volatile organic liquid” or “VOL” means any organic liquid which can emit volatile organic compounds, as defined in 40 CFR 51.100, into the atmosphere.
NR 440.285(2)(L)(L) “Waste” means any liquid resulting from industrial, commercial, mining or agricultural operations, or from community activities that is discarded or is being accumulated, stored, or physically, chemically, or biologically treated prior to being discarded or recycled.
NR 440.285(3)(3)Standard for volatile organic compounds (VOC).
NR 440.285(3)(a)(a) The owner or operator of each storage vessel with a design capacity greater than or equal to 151 m3 containing a VOL that, as stored, has a maximum true vapor pressure equal to or greater than 5.2 kPa but less than 76.6 kPa, or with a design capacity greater than or equal to 75 m3 but less than 151 m3 containing a VOL that, as stored, has a maximum true vapor pressure equal to or greater than 27.6 kPa but less than 76.6 kPa, shall equip each storage vessel with one of the following:
NR 440.285(3)(a)1.1. A fixed roof in combination with an internal floating roof meeting the following specifications:
NR 440.285(3)(a)1.a.a. The internal floating roof shall rest or float on the liquid surface (but not necessarily in complete contact with it) inside a storage vessel that has a fixed roof. The internal floating roof shall be floating on the liquid surface at all times, except during initial fill and during those intervals when the storage vessel is completely emptied or subsequently emptied and refilled. When the roof is resting on the leg supports, the process of filling, emptying, or refilling shall be continuous and shall be accomplished as rapidly as possible.
NR 440.285(3)(a)1.b.b. Each internal floating roof shall be equipped with one of the following closure devices between the wall of the storage vessel and the edge of the internal floating roof:
  1) A foam- or liquid-filled seal mounted in contact with the liquid (liquid-mounted seal). A liquid-mounted seal means a foam- or liquid-filled seal mounted in contact with the liquid between the wall of the storage vessel and the floating roof continuously around the circumference of the storage vessel.
  2) Two seals mounted one above the other so that each forms a continuous closure that completely covers the space between the wall of the storage vessel and the edge of the internal floating roof. The lower seal may be vapor-mounted, but both must be continuous.
  3) A mechanical shoe seal. A mechanical shoe seal is a metal sheet held vertically against the wall of the storage vessel by springs or weighted levers and is connected by braces to the floating roof. A flexible coated fabric (envelope) spans the annular space between the metal sheet and the floating roof.
NR 440.285(3)(a)1.c.c. Each opening in a noncontact internal floating roof except for automatic bleeder vents (vacuum break vents) and the rim space vents is to provide a projection below the liquid surface.
NR 440.285(3)(a)1.d.d. Each opening in the internal floating roof except for leg sleeves, automatic bleeder vents, rim space vents, column wells, ladder wells, sample wells and stub drains is to be equipped with a cover or lid which is to be maintained in a closed position at all times (i.e., no visible gap) except when the device is in actual use. The cover or lid shall be equipped with a gasket. Covers on each access hatch and automatic gauge float well shall be bolted except when they are in use.
NR 440.285(3)(a)1.e.e. Automatic bleeder vents shall be equipped with a gasket and are to be closed at all times when the roof is floating except when the roof is being floated off or is being landed on the roof leg supports.
NR 440.285(3)(a)1.f.f. Rim space vents shall be equipped with a gasket and are to be set to open only when the internal floating roof is not floating or at the manufacturer’s recommended setting.
NR 440.285(3)(a)1.g.g. Each penetration of the internal floating roof for the purpose of sampling shall be a sample well. The sample well shall have a slit fabric cover that covers at least 90% of the opening.