Code of Maine Rules
06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION
096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL
Chapter 171 - CONTROL OF PETROLEUM STORAGE FACILITIES
Section 096-171-2 - Definitions

Universal Citation: 06 ME Code Rules ยง 096-171-2

Current through 2024-13, March 27, 2024

As used in this Chapter, the following terms have the listed meanings:

A. Aboveground Petroleum Storage Tank. "Aboveground petroleum storage tank" means a storage vessel for liquid petroleum products that is not an underground petroleum storage tank.

B. Best Available Control Technology. "Best Available Control Technology" (BACT) means the term as defined in Definitions Regulation, 06-096 C.M.R. ch. 100.

C. Board. "Board" means the Board of Environmental Protection as defined in Definitions Regulation, 06-096 C.M.R. ch. 100, and Rule Concerning the Processing of Applications and Other Administrative Matters, 06-096 C.M.R. ch. 2.

D. Distillate Fuel. "Distillate fuel" means the following:

(1) Fuel oil that complies with the specifications for fuel oil numbers 1 or 2, as defined by the American Society for Testing and Materials (ASTM) in ASTM D396;

(2) Diesel fuel oil numbers 1 or 2, as defined in ASTM D975;

(3) Kerosene, as defined in ASTM D3699;

(4) Biodiesel, as defined in ASTM D6751; or

(5) Biodiesel blends, as defined in ASTM D7467.

All ASTM standards listed are as amended as of the effective date of this Chapter.

E. External Floating Roof Tank. "External floating roof tank" means an aboveground petroleum storage tank with an open-top cylindrical shell equipped with a roof designed to float on the surface of the stored liquid.

F. Fugitive Emissions Component. "Fugitive emissions component" means any component that may emit fugitive emissions of volatile organic compounds (VOC) including valves, connectors, pressure relief devices, open-ended lines, flanges, covers, instruments, and meters. Devices that vent as part of normal operations (e.g., passive vents on fixed roof tanks) are not fugitive emissions components.

G. Heated Petroleum Storage Tank. "Heated petroleum storage tank" means an aboveground petroleum storage tank with a fixed roof storing residual oil or asphalt which is heated to keep the product in a liquid, flowable form. Heat is typically provided to the tanks by boilers or furnaces that heat an intermediate liquid, usually a thermal oil, that is circulated through pipes in or surrounding the tank. For the purposes of this Chapter, petroleum storage tanks with floating roofs that are heated only to prevent snow and ice buildup in winter months are not considered heated petroleum storage tanks.

H. Internal Floating Roof Tank. "Internal floating roof tank" means an aboveground petroleum storage tank with both a permanent fixed roof and a second roof designed to float on the surface of the stored liquid.

I. Liquid Petroleum Products. "Liquid petroleum products" means a broad class of liquid hydrocarbon mixtures of oily, flammable material; oil additives; and petroleum products and petroleum by-products of any kind and in any form including, but not limited to, petroleum, fuel oil, sludge, oil refuse, oil mixed with other nonhazardous waste, crude oils, and all other liquid hydrocarbons regardless of specific gravity. For the purposes of this Chapter, propane or compressed gases are not considered liquid petroleum products.

J. Leak. "Leak" means any unintentional and uncontrolled release of petroleum product which results in one or more of the following:

(1) An instrument reading of 500 parts per million by volume (ppmv as methane) or greater in accordance with 40 C.F.R. Part 60 , Appendix A, Method 21 as amended on 10/17/2000;

(2) A reading of 25 percent LEL or greater within the vapor space of an internal floating roof tank (measured as 2.2 percent propane or equivalent percent of another calibration gas by volume in air) when measured within 3 feet of the internal floating roof;

(3) Visible or audible liquid or vapor leaks; or

(4) Visible emission observed using optical gas imaging equipment which has been confirmed using any of the methods listed above.

K. Lower Explosive Limit. "Lower Explosive Limit" (LEL) means the concentration above which an explosion of a combustible gas can take place.

L. Optical Gas Imaging. "Optical gas imaging" means a method of using thermal imaging cameras to visually detect gas, including methane and other organic gases.

M. Petroleum Storage Facility. "Petroleum storage facility" means a storage facility that receives liquid petroleum products from refineries or other storage locations primarily by pipeline, ship, or barge and delivers those products to refineries, other storage facilities, bulk plants, or commercial or retail accounts by pipeline, ship, barge, rail, or tank truck. For the purposes of this Chapter, a petroleum storage facility does not include aboveground petroleum storage tanks located at industrial manufacturing or electrical generating facilities.

N. Petroleum Storage Tank. "Petroleum storage tank" means any aboveground container used or intended to be used for the storage, use, treatment, collection, capture, or supply of liquid petroleum products as defined in this Chapter.

O. Underground Petroleum Storage Tank. "Underground petroleum storage tank" means any container which has 10 percent or more of its volume beneath the surface of the ground and which is used or intended to be used for the storage, use, treatment, collection, capture or supply of liquid petroleum products as defined in this Chapter. For purposes of this Chapter, a tank situated in an underground area that is situated upon or above the surface of a floor in such a manner that it may be readily inspected is not an underground petroleum storage tank.

P. Vapor Space of an Internal Floating Roof Tank. "Vapor space of an internal floating roof tank" means the space between the top of the internal floating roof and the fixed roof.

Disclaimer: These regulations may not be the most recent version. Maine may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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