Hawaii Administrative Rules › Title 11 - DEPARTMENT OF HEALTH › Subtitle 1 - GENERAL DEPARTMENTAL PROVISIONS › Chapter 261.1 - HAZARDOUS WASTE MANAGEMENT: IDENTIFICATION AND LISTING OF HAZARDOUS WASTE › Part 261 - IDENTIFICATION AND LISTING OF HAZARDOUS WASTE › Subpart CC - Air Emission Standards for Tanks and Containers › Section 11-261.1081 - Definitions

Current through June, 2024
As used in this subpart, all terms not defined herein
						shall have the meaning given to them in the Resource Conservation and Recovery
						Act and parts 260 through 266 of this chapter.
Average volatile organic concentration
or
average VO concentration
means the mass-weighted average
						volatile organic concentration of a hazardous secondary material as determined
						in accordance with the requirements of § 261.1084 of this subpart.
Closure device
means a cap, hatch, lid,
						plug, seal, valve, or other type of fitting that blocks an opening in a cover
						such that when the device is secured in the closed position it prevents or
						reduces air pollutant emissions to the atmosphere. Closure devices include
						devices that are detachable from the cover (e.g., a sampling port cap),
						manually operated (e.g., a hinged access lid or hatch), or automatically
						operated (e.g., a spring-loaded pressure relief valve).
Continuous seal
means a seal that forms
						a continuous closure that completely covers the space between the edge of the
						floating roof and the wall of a tank. A continuous seal may be a vapor-mounted
						seal, liquid-mounted seal, or metallic shoe seal. A continuous seal may be
						constructed of fastened segments so as to form a continuous seal.
Cover
means a device that provides a
						continuous barrier over the hazardous secondary material managed in a unit to
						prevent or reduce air pollutant emissions to the atmosphere. A cover may have
						openings (such as access hatches, sampling ports, gauge wells) that are
						necessary for operation, inspection, maintenance, and repair of the unit on
						which the cover is used. A cover may be a separate piece of equipment which can
						be detached and removed from the unit or a cover may be formed by structural
						features permanently integrated into the design of the unit.
Empty hazardous secondary material
						container
means:
(1) A container from which all hazardous secondary
						materials have been removed that can be removed using the practices commonly
						employed to remove materials from that type of container, e.g., pouring,
						pumping, and aspirating, and no more than 2.5 centimeters (one inch) of residue
						remain on the bottom of the container or inner liner;
(2) A container that is less than or equal to 119 gallons
						in size and no more than 3 percent by weight of the total capacity of the
						container remains in the container or inner liner; or
(3) A container that is greater than 119 gallons in size
						and no more than 0.3 percent by weight of the total capacity of the container
						remains in the container or inner liner.
Enclosure
means a structure that
						surrounds a tank or container, captures organic vapors emitted from the tank or
						container, and vents the captured vapors through a closed-vent system to a
						control device.
External floating roof
means a
						pontoon-type or double-deck type cover that rests on the surface of the
						material managed in a tank with no fixed roof.
Fixed roof
means a cover that is mounted
						on a unit in a stationary position and does not move with fluctuations in the
						level of the material managed in the unit.
Floating membrane cover
means a cover
						consisting of a synthetic flexible membrane material that rests upon and is
						supported by the hazardous secondary material being managed in a surface
						impoundment.
Floating roof
means a cover consisting
						of a double deck, pontoon single deck, or internal floating cover which rests
						upon and is supported by the material being contained, and is equipped with a
						continuous seal.
Hard-piping
means pipe or tubing that is
						manufactured and properly installed in accordance with relevant standards and
						good engineering practices.
In light material service
means the
						container is used to manage a material for which both of the following
						conditions apply: The vapor pressure of one or more of the organic constituents
						in the material is greater than 0.3 kilopascals (kPa) at 20 °C; and the
						total concentration of the pure organic constituents having a vapor pressure
						greater than 0.3 kPa at 20 °C is equal to or greater than 20 percent by
						weight.
Internal floating roof
means a cover
						that rests or floats on the material surface (but not necessarily in complete
						contact with it) inside a tank that has a fixed roof.
Liquid-mounted seal
means a foam or
						liquid-filled primary seal mounted in contact with the hazardous secondary
						material between the tank wall and the floating roof continuously around the
						circumference of the tank.
Malfunction
means any sudden,
						infrequent, and not reasonably preventable failure of air pollution control
						equipment, process equipment, or a process to operate in a normal or usual
						manner. Failures that are caused in part by poor maintenance or careless
						operation are not malfunctions.
Material determination
means performing
						all applicable procedures in accordance with the requirements of §
						261.1084 of this subpart to determine whether a hazardous secondary material
						meets standards specified in this subpart. Examples of a material determination
						include performing the procedures in accordance with the requirements of §
						261.1084 of this subpart to determine the average VO concentration of a
						hazardous secondary material at the point of material origination; the average
						VO concentration of a hazardous secondary material at the point of material
						treatment and comparing the results to the exit concentration limit specified
						for the process used to treat the hazardous secondary material; the organic
						reduction efficiency and the organic biodegradation efficiency for a biological
						process used to treat a hazardous secondary material and comparing the results
						to the applicable standards; or the maximum volatile organic vapor pressure for
						a hazardous secondary material in a tank and comparing the results to the
						applicable standards.
Maximum organic vapor pressure
means the
						sum of the individual organic constituent partial pressures exerted by the
						material contained in a tank, at the maximum vapor pressure-causing conditions
						(i.e., temperature, agitation, pH effects of combining materials, etc.)
						reasonably expected to occur in the tank. For the purpose of this subpart,
						maximum organic vapor pressure is determined using the procedures specified in
						§ 261.1084(c) of this subpart.
Metallic shoe seal
means a continuous
						seal that is constructed of metal sheets which are held vertically against the
						wall of the tank by springs, weighted levers, or other mechanisms and is
						connected to the floating roof by braces or other means. A flexible coated
						fabric (envelope) spans the annular space between the metal sheet and the
						floating roof.
No detectable organic emissions
means no
						escape of organics to the atmosphere as determined using the procedure
						specified in § 261.1084(d) of this subpart.
Point of material origination
means as
						follows:
(1) When the remanufacturer or other person that stores
						or treats the hazardous secondary material is the generator of the hazardous
						secondary material, the point of material origination means the point where a
						material produced by a system, process, or material management unit is
						determined to be a hazardous secondary material excluded under §
						261.4(a)(27).
Note to paragraph (1) of the definition of Point of
						material origination: In this case, this term is being used in a manner similar
						to the use of the term "point of generation" in air standards established under
						authority of the Clean Air Act in 40 CFR parts 60, 61, and 63.
(2) When the remanufacturer or other person that stores
						or treats the hazardous secondary material is not the generator of the
						hazardous secondary material, point of material origination means the point
						where the remanufacturer or other person that stores or treats the hazardous
						secondary material accepts delivery or takes possession of the hazardous
						secondary material.
Safety device
means a closure device
						such as a pressure relief valve, frangible disc, fusible plug, or any other
						type of device which functions exclusively to prevent physical damage or
						permanent deformation to a unit or its air emission control equipment by
						venting gases or vapors directly to the atmosphere during unsafe conditions
						resulting from an unplanned, accidental, or emergency event. For the purpose of
						this subpart, a safety device is not used for routine venting of gases or
						vapors from the vapor headspace underneath a cover such as during filling of
						the unit or to adjust the pressure in this vapor headspace in response to
						normal daily diurnal ambient temperature fluctuations. A safety device is
						designed to remain in a closed position during normal operations and open only
						when the internal pressure, or another relevant parameter, exceeds the device
						threshold setting applicable to the air emission control equipment as
						determined by the remanufacturer or other person that stores or treats the
						hazardous secondary material based on manufacturer recommendations, applicable
						regulations, fire protection and prevention codes, standard engineering codes
						and practices, or other requirements for the safe handling of flammable,
						ignitable, explosive, reactive, or hazardous materials.
Single-seal system
means a floating roof
						having one continuous seal. This seal may be vapor-mounted, liquid-mounted, or
						a metallic shoe seal.
Vapor-mounted seal
means a continuous
						seal that is mounted such that there is a vapor space between the hazardous
						secondary material in the unit and the bottom of the seal.
Volatile organic concentration
or
VO concentration
means the fraction by weight of the volatile
						organic compounds contained in a hazardous secondary material expressed in
						terms of parts per million (ppmw) as determined by direct measurement or by
						knowledge of the material in accordance with the requirements of §
						261.1084 of this subpart. For the purpose of determining the VO concentration
						of a hazardous secondary material, organic compounds with a Henry's law
						constant value of at least 0.1 mole-fraction-in-the-gas-phase/mole-fraction-in
						the liquid-phase (0.1 Y/X) (which can also be expressed as 1.8 ×
						10-6
						atmospheres/gram-mole/m3) at 25 degrees Celsius must
						be included.