As used in rules
3745-256-80 to
3745-256-90 of the
Administrative Code, all terms not defined herein have the meaning given in
Chapters
3745-50,
3745-51,
3745-52,
3745-53,
3745-54 to
3745-57,
3745-65 to
3745-69,
3745-205,
3745-256, and
3745-266 of the Administrative
Code and the Resource Conservation and Recovery Act.
(A)
"Average volatile
organic concentration" or "average VO concentration" means the mass-weighted
average volatile organic concentration of a hazardous waste as determined in
accordance with the requirements of rule
3745-256-84 of the
Administrative Code.
(C)
(1)
"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 the closure device 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).
(2)
"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.
(3)
"Cover" means a device that provides a continuous
barrier over the hazardous waste 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.
(E)
(1)
"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.
(2)
"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.
(F)
(1)
"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.
(2)
"Floating
membrane cover" means a cover consisting of a synthetic flexible membrane
material that rests upon and is supported by the hazardous waste being managed
in a surface impoundment.
(3)
"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.
(H)
"Hard-piping"
means pipe or tubing that is manufactured and properly installed in accordance
with relevant standards and good engineering practices.
(I)
(1)
"In light material service" means the container is used
to manage a material for which both the vapor pressure of one or more of the
organic constituents in the material is greater than
0.3 kilopascals (kPa) at twenty
degrees Celsius; and the total concentration of the pure organic constituents
having a vapor pressure greater than
0.3 kPa at twenty degrees
Celsius is equal to or greater than twenty per cent by weight.
(2)
"Internal
floating roof" means a cover that rests or floats on the material surface (but
not necessarily in complete contact with the material surface) inside a tank
that has a fixed roof.
(L)
"Liquid-mounted
seal" means a foam or liquid-filled primary seal mounted in contact with the
hazardous waste between the tank wall and the floating roof continuously around
the circumference of the tank.
(M)
(1)
"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.
(2)
"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 wastes, etc.) reasonably
expected to occur in the tank. For the purpose of rules
3745-256-80 to
3745-256-90 of the
Administrative Code, maximum organic vapor pressure is determined using the
procedures specified in paragraph (C) of rule
3745-256-84 of the
Administrative Code.
(3)
"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.
(N)
"No detectable organic emissions" means no escape of
organics to the atmosphere as determined using the procedure specified in
paragraph (D) of rule
3745-256-84 of the
Administrative Code.
(P)
(1)
"Point of waste origination" means as follows:
(a)
When the facility
owner or operator is the generator of the hazardous waste, the point of waste
origination means the point where a waste produced by a system, process, or
waste management unit is determined to be a "hazardous waste" as defined in
Chapter 3745-51 of the Administrative Code.
[Comment: 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 for waste management operations under authority of
the Clean Air Act in 40 CFR
Part 60, Part 61, and Part
63.]
(b)
When the facility
owner and operator are not the generator of the hazardous waste, point of waste
origination means the point where the owner or operator accepts delivery or
takes possession of the hazardous waste.
(2)
"Point of waste
treatment" means the point where a hazardous waste to be treated in accordance
with paragraph (C)(2) of rule
3745-256-83 of the
Administrative Code exits the treatment process. Any waste determination shall
be made before the waste is conveyed, handled, or otherwise managed in a manner
that allows the waste to volatilize to the atmosphere.
(S)
(1)
"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 the unit's 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 rules
3745-256-80 to
3745-256-90 of the
Administrative Code, 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 owner or operator 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.
(2)
"Single-seal system" means a floating roof having one
continuous seal. This seal may be vapor-mounted, liquid-mounted, or a metallic
shoe seal.
(V)
(1)
"Vapor-mounted seal" means a continuous seal that is
mounted such that there is a vapor space between the hazardous waste in the
unit and the bottom of the seal.
(2)
"Volatile organic
concentration" or "VO concentration" means the fraction by weight of the
volatile organic compounds contained in a hazardous waste expressed in terms of
parts per million (ppmw) as determined by direct measurement or by knowledge of
the waste in accordance with the requirements of rule
3745-256-84 of the
Administrative Code. To determine the VO concentration of a hazardous waste,
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 also can be
expressed as 1.8 x
10-6
atmospheres/gram-mole/m3) at twenty-five degrees
Celsius shall be included. The appendix to rule
3745-256-84 of the
Administrative Code presents a list of compounds known to have a Henry's law
constant value less than the cutoff level.
(W)
(1)
"Waste determination" means performing all applicable
procedures in accordance with the requirements of rule
3745-256-84 of the
Administrative Code to determine whether a hazardous waste meets standards
specified in rule
3745-256-80 to
3745-256-90 of the
Administrative Code. Examples of a waste determination include performing the
procedures in accordance with the requirements of rule
3745-256-84 of the
Administrative Code to determine the average VO concentration of a hazardous
waste at the point of waste origination; the average VO concentration of a
hazardous waste at the point of waste treatment and comparing the results to
the exit concentration limit specified for the process used to treat the
hazardous waste; the organic reduction efficiency and the organic
biodegradation efficiency for a biological process used to treat a hazardous
waste and comparing the results to the applicable standards; or the maximum
volatile organic vapor pressure for a hazardous waste in a tank and comparing
the results to the applicable standards.
(2)
"Waste
stabilization process" means any physical or chemical process used to either
reduce the mobility of hazardous constituents in a hazardous waste or eliminate
free liquids as determined by test method 9095B ("Paint Filter Liquids Test")
in "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods," U.S.
EPA publication SW-846, as incorporated by reference in rule
3745-50-11 of the Administrative
Code. A waste stabilization process includes mixing the hazardous waste with
binders or other materials, and curing the resulting hazardous waste and binder
mixture. Other synonymous terms used to refer to this process are "waste
fixation" or "waste solidification." This does not include the adding of
absorbent materials to the surface of a waste, without mixing, agitation, or
subsequent curing, to absorb free liquid.
[Comment: For dates of non-regulatory
government publications, publications of recognized organizations and
associations, federal rules, and federal statutory provisions referenced in
this rule, see rule
3745-50-11 of the Administrative
Code titled "Incorporated by reference."]
Notes
Ohio Admin. Code
3745-256-81
Effective:
6/12/2023
Five Year Review (FYR) Dates: Exempt
Promulgated Under:
119.03
Statutory
Authority: 3734.12
Rule
Amplifies: 3734.12