NR 460.02(15)(b)(b) With regard to an alternative emission limitation or equivalent emission limitation determined by the administrator or the department, the date that the alternative emission limitation or equivalent emission limitation becomes effective according to the provisions of 40 CFR part 63 or chs. NR 460 to 469.

NR 460.02(16)(16) “Emission standard” means a national standard, limitation, prohibition or other regulation promulgated in a subpart of 40 CFR part 63 or in chs. NR 460 to 469 pursuant to section 112 (d), (h) or (f) of the act (42 USC 7412 (d), (h) or (f)).

NR 460.02(17)(17) “Emissions averaging” means a way to comply with the emission limitations specified in a relevant standard, whereby an affected source, if allowed under a subpart of 40 CFR part 63, may create emission credits by reducing emissions from specific points to a level below that required by the relevant standard, and those credits are used to offset emissions from points that are not controlled to the level required by the relevant standard.

NR 460.02(18)(18) “Equivalent emission limitation” means any maximum achievable control technology emission limitation or requirements which are applicable to a major source of hazardous air pollutants and are adopted by the department on a case-by-case basis, pursuant to section 112 (g) or (j) of the Act (42 USC 7412 (g) or (j)).

NR 460.02(19)(19) “Excess emissions and continuous monitoring system performance report” means a report that shall be submitted periodically to the department by an affected source in order to provide data on its compliance with relevant emission limits, operating parameters, and the performance of its continuous parameter monitoring systems.

NR 460.02(20)(20) “Existing source” means any affected source that is not a new MACT source.

NR 460.02(20m)(20m) “Force majeure” means, for purposes of s. NR 460.06, an event that will be or has been caused by circumstances beyond the control of the affected facility, its contractors or any entity controlled by the affected facility that prevents the owner or operator from complying with the regulatory requirement to conduct performance tests within the specified timeframe despite the affected facility’s best efforts to fulfill the obligation.

NR 460.02 NoteNote: Examples of events included under this definition are acts of nature, acts of war or terrorism, equipment failure or safety hazard beyond the control of the affected facility.

NR 460.02(21)(21) “Fugitive emissions” means those emissions from a stationary source that could not reasonably pass through a stack, chimney, vent or other functionally equivalent opening. Under section 112 of the act (42 USC 7412), all fugitive emissions are to be considered in determining whether a stationary source is a major source.

NR 460.02(22)(22) “Hazardous air pollutant” or “HAP” means any air pollutant included in the list in section 112 (b) (1) of the act (42 USC 7412 (b) (1)) as revised by 40 CFR part 63 subpart C.

NR 460.02(22g)(22g) “Intermediate alternative monitoring” means federally required monitoring with modifications that involve technology generally accepted by the scientific community as equivalent or better, that is applied on a site-specific basis and that may have the potential to decrease the stringency of the associated emission limitation or standard. Though site-specific, intermediate modifications of this sort may set a national precedent for a source category and may ultimately result in a revision to the federally required monitoring. Examples of intermediate modifications to monitoring include, but are not limited to:

NR 460.02(22r)(22r) “Intermediate alternative test method” means a federally enforceable test method with modifications that involve technology generally accepted by the scientific community as equivalent or better, that is applied on a site-specific basis and that may have the potential to decrease the stringency of the associated emission limitation or standard. Though site-specific, such intermediate modifications may set a national precedent for a source category and may ultimately result in a revision to the federally enforceable test method. In order to be approved, an intermediate modification shall be validated according to EPA Method 301 in Appendix A of 40 CFR part 63, incorporated by reference in s. NR 484.04 (25), to demonstrate that it provides equal or improved accuracy and precision. Examples of intermediate modifications to a test method include, but are not limited to:

NR 460.02(22r)(a)(a) Modifications to a test method’s sampling procedure including substitution of sampling equipment that has been demonstrated for a particular sample matrix, and use of a different impinger absorbing solution.

NR 460.02(22r)(b)(b) Changes in sample recovery procedures and analytical techniques, such as changes to sample holding times and use of a different analytical finish with proven capability for the analyte of interest.

NR 460.02(23)(23) “Lesser quantity” means a quantity of a hazardous air pollutant that is or may be emitted by a stationary source that the administrator establishes in order to define a major source under an applicable subpart of 40 CFR part 63.

NR 460.02(23e)(23e) “Major alternative monitoring” means federally required monitoring with modifications that use technology or procedures not generally accepted by the scientific community, or that is an entirely new method. These major modifications to monitoring may be site-specific or may apply to one or more source categories and will almost always set a national precedent. Examples of major modifications to monitoring include, but are not limited to:

NR 460.02(23e)(e)(e) Decreased monitoring frequency for a continuous emission monitoring system, continuous opacity monitoring system, predictive emission monitoring system or continuous parameter monitoring system.