Oklahoma Administrative Code › Title 252 - Department of Environmental Quality › Chapter 100 - Water Quality Standards Implementation › Subchapter 8 - Permits for Part 70 Sources and Major New Source Review (NSR) Sources › Part 1 - GENERAL PROVISIONS › Section 252:100-8-1.1 - Definitions

Current through Vol. 41, No. 20, July 1, 2024
The following words and terms, when used in this
					 Subchapter, shall have the following meaning, unless the context clearly
					 indicates otherwise. Except as specifically provided in this section, terms
					 used in this Subchapter retain the meaning accorded them under the applicable
					 requirements of the Act.
"A stack in existence"
means for purposes of
					 OAC
					 252:100-8-1.5
					 that the owner or operator had:
(A) begun, or caused to begin, a continuous program of
					 physical on-site construction of the stack; or
(B) entered into binding agreements or contractual
					 obligations, which could not be canceled or modified without substantial loss
					 to the owner or operator, to undertake a program of construction of the stack
					 to be completed in a reasonable time.
"Actual emissions"
means, except for Parts 7
					 and 9 of this Subchapter, the total amount of any regulated air pollutant
					 emitted from a given facility during a particular calendar year, determined
					 using methods contained in OAC
					 252:100-5-2.1(d).
"Adverse impact on visibility"
means, for
					 purposes of Parts 7 and 11, visibility impairment which interferes with the
					 management, protection, preservation, or enjoyment of the visitor's visual
					 experience of the Federal Class I area. This determination must be made by the
					 DEQ on a case-by-case basis taking into account the geographic extent,
					 intensity, duration, frequency and time of visibility impairments, and how
					 these factors correlate with (1) times of visitor use of the Federal Class I
					 area, and (2) the frequency and timing of natural conditions that reduce
					 visibility. This term does not include effects on integral vistas.
"Dispersion technique"
means for purposes of
					 OAC
					 252:100-8-1.5
					 any technique which attempts to affect the concentration of a pollutant in the
					 ambient air by using that portion of a stack which exceeds good engineering
					 practice stack height; varying the rate of emission of a pollutant according to
					 atmospheric conditions or ambient concentrations of that pollutant; or
					 increasing final exhaust gas plume rise by manipulating source process
					 parameters, exhaust gas parameters, stack parameters or combining exhaust gases
					 from several existing stacks into one stack, or other selective handling of
					 exhaust gas streams so as to increase the exhaust gas plume rise. The preceding
					 sentence does not include:
(A) The reheating of a gas stream, following use of a
					 pollution control system, for the purpose of returning the gas to the
					 temperature at which it was originally discharged from the facility generating
					 the gas stream.
(B) The merging of exhaust gas streams where:
(i) the source owner or operator documents that the
					 facility was originally designed and constructed with such merged
					 streams;
(ii) after July 8, 1985, such merging is part of a change
					 in operation at the facility that includes the installation of pollution
					 controls and is accompanied by a net reduction in the allowable emissions of a
					 pollutant. This exclusion from "dispersion technique" applicability shall apply
					 only to the emission limitation for the pollutant affected by such change in
					 operation; or
(iii) before July 8, 1985, such merging was part of a
					 change in operation at the facility that included the installation of emissions
					 control equipment or was carried out for sound economic or engineering reasons.
					 Where there was an increase in the emission limitation or, in the event that no
					 emission limitation existed prior to the merging, there was an increase in the
					 quantity of pollutants actually emitted prior to the merging, it shall be
					 presumed that merging was primarily intended as a means of gaining emissions
					 credit for greater dispersion. Before such credit can be allowed, the owner or
					 operator must satisfactorily demonstrate that merging was not carried out for
					 the primary purpose of gaining credit for greater dispersion.
(C) Manipulation of exhaust gas parameters, merging of
					 exhaust gas streams from several existing stacks into one stack, or other
					 selective handling of exhaust gas streams so as to increase the exhaust gas
					 plume rise in those cases where the resulting allowable emissions of sulfur
					 dioxide from the facility do not exceed 5,000 tons per year.
"Emission limitations and emission standards"
means for purposes of OAC
					 252:100-8-1.5
					 requirements that limit the quantity, rate or concentration of emissions of air
					 pollutants on a continuous basis, including any requirements that limit the
					 level of opacity, prescribe equipment, set fuel specifications or prescribe
					 operation or maintenance procedures for a source to assure continuous
					 reduction.
"Natural conditions"
includes naturally
					 occurring phenomena that reduce visibility as measured in terms of light
					 extinction, visual range, contrast, or coloration.
"Secondary emissions"
means, for purposes of
					 Parts 7 and 9 of this Subchapter, emissions which occur as a result of the
					 construction or operation of a major stationary source or modification, but do
					 not come from the source or modification itself. Secondary emissions must be
					 specific, well defined, quantifiable, and impact the same general areas as the
					 source or modification which causes the secondary emissions. Secondary
					 emissions may include, but are not limited to:
(A) emissions from trains coming to or from the new or
					 modified stationary source; and,
(B) emissions from any offsite support facility which would
					 not otherwise be constructed or increase its emissions as a result of the
					 construction or operation of the major source or modification.
"Stack"
means for purposes of OAC
					 252:100-8-1.5
					 any point in a source designed to emit solids, liquids or gases into the air,
					 including a pipe or duct but not including flares.
"Visibility impairment"
means any humanly
					 perceptible reduction in visibility (light extinction, visual range, contrast,
					 and coloration) from that which would have existed under natural
					 conditions.
Added at 15 Ok Reg
					 2590, eff 6-25-98; Amended at 18 Ok Reg 1455, eff 6-1-01; Amended at 23 Ok Reg
					 1699, eff 6-15-06; Amended at 25 Ok Reg 1105, eff
					 7-1-08