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

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

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.

NR 405.02(28m) (28m) “Subject to regulation under the Act” means, for any air contaminant, that the contaminant is subject to either a provision of the Act, or a nationally applicable regulation codified by the administrator in title 40, chapter I, subchapter C of the CFR, that requires actual control of the quantity of air emissions of the contaminant, and that the control requirement has taken effect and is operative to control, limit, or restrict the quantity of emissions of the contaminant released from the regulated activity.

NR 405.02(29) (29) “Temporary clean coal technology demonstration project” means a clean coal technology demonstration project that is operated for a period of 5 years or less, and which complies with the state implementation plans for the state in which the project is located and other requirements necessary to attain and maintain the national ambient air quality standards during the project and after it is terminated.

NR 405.02 History History: Cr. Register, January, 1987, No. 373, eff. 2-1-87; am. (27) (a) Register, December, 1988, No. 396, eff. 1-1-89; am. (intro.), (22) (c), (24) (d), (27) (b) and (28), cr. (22) (d), Register, May, 1992, No. 437, eff. 6-1-92; emerg. am. (7) and (27) (a) and (b), eff. 11-15-92; am. (intro.), (1) (c), (7), (8) and (27) (a), cr. (1) (d), (8m), (8s), (11m), (21) (b) 8. to 11., (24m), (25g), (25m), (25s) and (29), renum. (14) to be NR 400.02 (39m) and am., r. (27) (b), Register, May, 1993, No. 449, eff. 6-1-93; corrections in (1) (intro.) and (25g) (a) made under s. 13.93 (2m) (b) 7. and 6., Stats., Register, May, 1993, No. 449; am. (1) (b), (2) (a), (3) (intro.), (7), (21) (b) 6., (24) (d), (25m) (b), (c), Register, April, 1995, No. 472, eff. 5-1-95; am. (1) (d), (2) (intro.), (3) (intro.), (a), (4) (a) (intro.), 1. and 2., (b) 1. and 2., (7), (8), (12), (21) (intro.), (b) 3., 5. a. and b., 6., 8. a., (22) (a) 1. and 2., (24) (d), (25g) (d), (25m) (a) and (c), (25s) (intro.) and (a), (27) (c) and (28), r. (5), cr. (21m) and (22m), Register, December, 1995, No. 480, eff. 1-1-96; am. (3) (intro.), (7), (9) (intro.), (21) (b) 2., 3., 8 and 9. (intro.) (22m) (b) 1., (24) (b) (intro.), 1., (24m) (intro.), (25g) and (25m) (a), r. (3) (a), (b), Register, December, 1996, No., 492, eff. 1-1-97; am. (21) (b) (intro.), 5. and (22) (c), Register, October, 1999, No. 526, eff. 11-1-99; CR 01-081: am. (22) (c) Register September 2004 No. 585, eff. 10-1-04; CR 03-118: am. (1) (intro.), (a) to (c), (8), (11) and (12), r. (1) (d), (24m), (27) (a) 8., 17. and 18., cr. (2m), (11c), (11e), (11j), (20m), (24j), (25b), (25d), (25e), (25f), (25i) and (27m), r. and recr. (21) and (24), Register June 2007 No. 618, eff. 7-1-07; CR 06-109: cr. (27) (a) 8. Register May 2008 No. 629, eff. 6-1-08; CR 07-104: am. (12) (b) and (22) (a) 1., cr. (25k) Register July 2008 No. 631, eff. 8-1-08; CR 07-036: am. (22) (c) Register November 2008 No. 635, eff. 12-1-08; CR 10-050: am. (25k) (intro.), cr. (27) (a) 5m. Register November 2010 No. 659, eff. 12-1-10; EmR1046: emerg. cr. (28m), eff. 12-15-10; CR 10-144: cr. (28m) Register August 2011 No. 668, eff. 9-1-11; CR 13-070: am. (21) (b) 5. a., b., 6., (25i) (a), cr. (25i) (ag), (ar) Register July 2014 No. 703, eff. 8-1-14; CR 15-077: am. (3), (21) (a), (21m) (a), cr. (21m) (c), am. (22) (b), (22m) (a) 1., cr. (22m) (a) 3., am. (22m) (b) 1., (27) (a) 6. Register July 2016 No. 727, eff. 8-1-16.

NR 405.025 NR 405.025 Methods for calculation of increases in actual emissions.