NR 405.02(25s)(a)(a) Consider all relevant information, including but not limited to, historical operational data, the company’s own representations, filings with the state or federal regulatory authorities, and compliance plans under title IV of the act.
NR 405.02(25s)(b)(b) Exclude, in calculating any increase in emissions that results from the particular physical change or change in the method of operation at an electric utility steam generating unit, that portion of the unit’s emissions following the change that could have been accommodated during the representative baseline period and is attributable to an increase in projected capacity utilization at the unit that is unrelated to the particular change, including any increased utilization due to the rate of electricity demand growth for the utility system as a whole.
NR 405.02(26)(26)“Secondary emissions” means emissions which occur as a result of the construction or operation of a major stationary source or major modification, but do not come from the major stationary source or major modification itself. For the purposes of this chapter, secondary emissions must be specific, well defined, quantifiable, and impact the same general areas as the stationary source or modification which causes the secondary emissions. Secondary emissions include emissions from any offsite support facility which would not be constructed or increase its emissions except as a result of the construction or operation of the major stationary source or major modification. Secondary emissions do not include any emissions which come directly from a mobile source, such as emissions from the tailpipe of a motor vehicle, from a train, or from a vessel.
NR 405.02(27)(27)
NR 405.02(27)(a)(a) “Significant” means, in reference to a net emissions increase or the potential of a source to emit any of the air contaminants in Table A, a rate of emissions that would equal or exceed any of the rates in Table A.
Table A
Pollutant and Emissions Rate
- See PDF for table PDF
1. Carbon monoxide: 100 tons per year (tpy)
2. Nitrogen oxides: 40 tpy
3. Sulfur dioxide: 40 tpy
4. Particulate matter: 25 tpy
5. PM10: 15 tpy
5m. PM2.5: 10 tpy, also 40 tpy of nitrogen oxides or 40 tpy of sulfur dioxide
6. Ozone: 40 tpy of volatile organic compounds or nitrogen oxides
7. Lead: 0.60 tpy
8. Municipal solid waste landfill emissions (measured as nonmethane organic compounds): 50 tpy
9. Fluorides: 3.0 tpy
10. Sulfuric acid mist: 7.0 tpy
11. Hydrogen sulfide (H2S): 10 tpy
12. Total reduced sulfur (including H2S): 10 tpy
13. Reduced sulfur compounds (including H2S): 10 tpy
14. Municipal waste combustor (MWC) acid gases (measured as total sulfur dioxide and hydrogen chloride): 40 tpy
15. MWC metals (measured as particulate matter): 15 tpy
16. MWC organics (measured as total tetra- through octa- chlorinated dibenzo-p-dioxins and dibenzofurans): 3.5×10-6 tpy
- See PDF for table PDF
NR 405.02(27)(c)(c) “Significant” means any emissions rate in reference to a net emissions increase or the potential of a source to emit an air contaminant subject to regulation under the Act other than air contaminants listed in par. (a) or under section 112 (b) of the Act (42 USC 7412 (b)).
NR 405.02(27)(d)(d) Notwithstanding par. (a), “significant” means any emissions rate or any net emissions increase associated with a major stationary source or major modification, which would construct within 10 kilometers of a Class I area, and have an impact on such area equal to or greater than 1 µg/m3 (24-hour average).
NR 405.02(27m)(27m)“Significant emissions increase” means, for a regulated NSR air contaminant, an increase in emissions that is equal to or greater than the value for that air contaminant listed in s. NR 405.02 (27).
NR 405.02(28)(28)“Stationary source” means any building, structure, facility or installation which emits or may emit any air contaminant subject to regulation under the act.