State of Wisconsin 

DEPARTMENT OF NATURAL RESOURCES 

101 S. Webster Street 

Box 7921 

Madison Wl 53707-7921 

Scott Walker, Governor 

Cathy Stepp, Secretary 

Telephone 608-266-2621 

Toll Free 1-888-936-7463 

TTY Access via relay - 711 

WISCONSIN 1 

DEPT. OF NATURAL RESOURCES J 

Ms. Susan Hedman 

USEPA-Region V(R-18J) 

April 15,2014 

AIR ENFORCEMENT BRANCH 

U.S. EPA REGION 5 

77 West Jackson Boulevard 

Chicago IL 60604-3507 

Subject: Supplement to March 12, 2014 State Implementation Plan (SIP) submittal for chs. NR 400, 

405, and 408 rule changes addressing the definition of "major modification", identification of 

ozone and PM 2 5 precursors, and identification of PM2.5 / PMi o condensables 

Dear Ms. Hedman: 

In a March 12, 2014 SIP submittal, WDNR supplied information to support approval of the identification of PM2.5 

precursors in ch. NR 405, Wis. Adm. Code. With this letter and attachment we are supplying additional 

information to support that SIP submittal. 

We are submitting the significant emissions rates for PM2.5 and its precursors which are codified in state rule NR 

405.02(27)(a)5m, Wis. Adm. Code, as the supplement to the March 2014 SIP submittal. The attachment contains 

a copy of NR 405.02(27)(a)5m, Wis. Adm. Code, which was finalized in the August 31, 2011, Wisconsin 

Administrative Register No. 668. Public hearings were held on the WDNR rule package containing this rule, 

AM-16-10, on June 7, 2010 in Madison; June 8, 2010 in Milwaukee; and June 9, 2010 in Wausau. WDNR 

received only two public comments in support of AM-16-10 at the Wausau hearing. 

If you have any questions, please feel free to contact Kristin Hart of my staff at (608)266-6876. 

Bart Sponseller, 

Director, Bureau of Air Management 

cc: Andrea Morgan, USEPA-Region V (AR-18J), 77 West Jackson Boulevard, Chicago, IL 60604-3507 

Ralph Patterson - WDNR 

Kristin Hart - WDNR 

Sincerely, 

Attachment 

RECEIVE D 

APR 1 8 im 

U.S . EP A REGIO N 5 

OFFICE OF REGIONAL ADMINISTRATOR 

dnr.wi.gov 

wisconsin.gov Naturally WISCONSIN .PRINTED 

JON RECYCLED 

PAPER 
NR 405.02 WISCONSIN ADMINISTRATIVE CODE 

the federal secretary of energy, a derivative of one or more of these 

technologies, and any other technology capable of controlling 

multiple combustion emissions simultaneously with improved 

boiler or generation efficiency and with significantly greater 

waste reduction relative to the performance of technology in 

widespread commercial use as of November 15, 1990. 

(b) Repowering shall also include any unit fired by oil or gas 

or both which has been awarded clean coal technology demonstration funding as of January 1, 1991, by the federal department 

of energy. 

(c) The department shall give expedited consideration to permit applications for any source that satisfies the requirements of 

this subsection and is granted an extension under section 409 of 

the Act (42 USC 765Ih). 

(25s) "'Representative actual annual emissions" means the 

average rate, in tons per year, at which the source is projected to 

emit a pollutant for the 2-year period after a physical change or 

change in the method of operation of a unit, or a different consecutive 2-year period within 10 years after that change, where the 

department determines that such period is more representative of 

normal source operations, considering the effect any such change 

will have on increasing or decreasing the hourly emissions rate 

and on projected capacity utilization. In projecting future emissions the department shall: 

(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 ofthe act, 

(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. 

(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 ofthe construction or operation ofthe 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. 

(27) (a) ''Significant" means, in reference to a net emissions 

increase or the potential of a source to emit any ofthe air contaminants in Table A, a rate of emissions that would equal or exceed 

any of tlie rates in Table A. 

Table A 

Pollutant and Emissions Rate 

1. Carbon monoxide: 100 tons per year (tpy) 

2. Nitrogen oxides: 40 tpy 

3. Sulfur dioxide: 40 tpy 

4. Particulate matter: 25 tpy 

5. PM 1 0 : 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 

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. MW C metals (measured as particulate matter): 15 tpy 

16. MWC organics (measured as total tetra- through octachlorinated dibenzo-p-dioxins and dibenzofurans): 3.5 x 10' 6

 tpy 

(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) ofthe Act (42 USC 

7412 (b)). 

(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 |.tg/m3 (24-hour average). 

(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). 

(28) "Stationary source" means any building, structure, facility or installation which emits or may emit any air contaminant 

subject to regulation under the act. 

(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 ofthe quantity of air emissions ofthe 

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. 

(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. 

History : Cr. Resister. Jamiarv. 1987, No , 373, eft". 2-1-87 ; am, (27) (a) Register, 

December. 1988, No . 396, eff, 1-1-89 ; am. (intra.). (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. (intra.), (1) (c), (7), (8) and (27) (a), cr. (1) (d), (8m), 

(8s), (! 1m). (21) (b) 8. to 11., (24m), (25g), (25m), (25s) and (29), renum. (I t ) to be 

N R 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,, Slats.. 

Register. Ma w 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) ta) (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) I.. (24) (b) (intra ). 1,, (24m) (intra.). (25g) and (25m) (a), r. (3) (a), 

(b) , Register, December. 1996, No, . 492, ef f 1-1-97; am. (21) (b) (intro.), 5. and (22) 

(c) . Register. October. 1999, No . 526, eff. 11-1-99 ; C R 01 081: am. (221(c) Registe r 

September 2004 No . 585 . eff, 10-1-04 ; C R 03-118 : am. (1) (intro,), (a) to (c), (8), 

(11) and (12), r. (I)(d). (24m), (27) (a) 8 „ 17. and 18., cr. (2m), (1 le), (1 le), (11 j), 

(20m), (2.4j), (25b), (25d), (25e), (25f). (25i) and (27m), r. and recr. (21) and (24), 

Registe r June 2007 No . 618 , eff. 7-1-07 ; C R 06-109 : cr. (27) (a) 8. Register Ma v 

200 8 No . 629, eff. 6-1-08 ; C R 07-104 : am. (12) (b) and (22) (a) 1., cr. (25k) Registe r 

July 2008 No . 631 , eff. 8-1-08 ; C R 07-036 : am. (22) (c) Registe r Novembe r 2008 

N o . 635 , eff. 12-1-08 ; C R 10 050: am. (25k) (intra.), or. (27) (a) 5m. Registe r 

Novembe r 2010 No . 659 , ef f 12-1-10 ; Bm R 1046: emerg. or. (28m), eff. 12-15-10 ; 

C R 10 144: cr. (28m) Registe r August 2011 No . 668, eff. 9 1-11. 

NR 405.025 Methods for calculation of increases in 

actual emissions. (1) For projects that only involve existing 

emissions units, any increase in actual emissions from a physical 

The Wisconsin Administrative Code on this web site is updated on the 1st day of each month, current as of that date. See also Are the Codes 

Registe r Ma y 2012 No . 67 7

 o n thl s

 WebSite Official?