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Chapter NR 418
SULFUR EMISSION CONTROL IN SPECIFIC GEOGRAPHIC AREAS
NR 418.01   Applicability; purpose.
NR 418.02   Definitions.
NR 418.025   Brokaw RACT sulfur limitations.
NR 418.03   Madison RACT sulfur limitations.
NR 418.035   Southeastern Wisconsin intrastate AQCR.
NR 418.04   Milwaukee RACT sulfur limitations.
NR 418.05   Green Bay and DePere RACT sulfur limitations.
NR 418.06   Peshtigo RACT sulfur limitations.
NR 418.07   Rhinelander RACT sulfur limitations.
NR 418.08   Rothschild RACT sulfur limitations.
Ch. NR 418 NoteNote: Corrections made under s. 13.93 (2m) (b) 6. and 7., Stats., Register, December, 1996, No. 492.
NR 418.01NR 418.01 Applicability; purpose.
NR 418.01(1)(1) Applicability. This chapter applies to all direct air contaminant sources which are located in the specific geographic areas described in this chapter and which emit sulfur dioxide or other sulfur compounds and to all owners and operators of these sources.
NR 418.01(2)(2) Purpose. This chapter is adopted under ss. 285.11, 285.13, and 285.17, Stats., to categorize sources of sulfur dioxide and other sulfur compounds into separate source categories and to establish emission limitations for these categories of sources in order to protect air quality.
NR 418.01 HistoryHistory: Cr. Register, September, 1986, No. 369, eff. 10-1-86; am. (1) and (2), Register, May, 1992, No. 437, eff. 6-1-92; am. (1), Register, December, 1995, No. 480, eff. 1-1-96; am. (2), Register, October, 1999, No. 526, eff. 11-1-99.
NR 418.02NR 418.02 Definitions. The definitions contained in ch. NR 400 apply to the terms used in this chapter.
NR 418.02 HistoryHistory: Cr. Register, September, 1986, No. 369, eff. 10-1-86.
NR 418.025NR 418.025 Brokaw RACT sulfur limitations.
NR 418.025(1)(1) No person may cause, allow or permit sulfur dioxide to be emitted to the ambient air within the corporate boundaries of the village of Brokaw, Marathon county from any direct stationary source on which construction or modification commenced prior to January 1, 1980 in amounts greater than:
NR 418.025(1)(a)(a) For any liquid fossil fuel fired steam generating boiler:
NR 418.025(1)(a)1.1. With an emission point of less than 160 feet in height above ground, that occurring from firing fuel oil with a sulfur content equal to or less than 0.22% by weight.
NR 418.025(1)(a)2.2. With an emission point of 160 feet or more in height above ground, that occurring from firing fuel oil with a sulfur content equal to or less than 1.0% by weight.
NR 418.025(1)(b)(b) For any Copeland recovery system: 113 pounds per hour.
NR 418.025(1)(c)(c) For any pulp and papermill cooking acid plant: 22 pounds per hour.
NR 418.025(1)(d)(d) For any pulp digester blow stack: 20 pounds per hour.
NR 418.025(1)(e)(e) Notwithstanding the emission limitations of pars. (b), (c) and (d), for an pulp and papermill Copeland recovery system, cooking acid plant and pulp digester blow system which vent to a common stack with an emission point of 160 feet or more in height above ground: 228 pounds per hour.
NR 418.025(2)(2) All sources to which sub. (1) applies shall achieve final compliance and so certify to the department on or before December 31, 1982.
NR 418.025 HistoryHistory: Renum. from NR 154.12 (4) and am. Register, September, 1986, No. 369, eff. 10-1-86; am. (2) (intro.), Register, May, 1992, No. 437, eff. 6-1-92; am. (1), r. (2) (intro.) and (a) to (e), renum. (2) (f) to be (2), Register, December, 1995, No. 480, eff. 1-1-96.
NR 418.03NR 418.03 Madison RACT sulfur limitations.
NR 418.03(1)(1) No person may cause, allow or permit sulfur dioxide to be emitted to the ambient air within the geographical boundaries of the city of Madison, Dane county, from any direct source on which construction or modification was commenced prior to November 1, 1979 in amounts greater than:
NR 418.03(1)(a)(a) Any fossil fuel fired steam generating boiler rated at more than 25 million Btu heat input per hour but less than 100 million Btu heat input per hour firing solid fossil fuel or solid fossil fuel in combination with solid, liquid or gaseous fuels: 7.0 pounds of sulfur dioxide per million Btu heat input.
NR 418.03(1)(b)(b) Any fossil fuel fired steam generating boiler rated at equal to or greater than 100 million Btu heat input per hour firing solid fossil fuel or solid fossil fuel in combination with solid, liquid or gaseous fuels:
NR 418.03(1)(b)1.1. Any electrical utility boiler: 4.25 pounds of sulfur dioxide per million Btu heat input.
NR 418.03(1)(b)2.2. Any other boiler:
NR 418.03(1)(b)2.a.a. Height above ground of emission point of less than 180 feet: 2.5 pounds of sulfur dioxide per million Btu heat input.
NR 418.03(1)(b)2.b.b. Height above ground of emission point of 180 to 220 feet: X pounds of sulfur dioxide per million Btu heat input, where X is determined by the following equation:
NR 418.03(1)(b)2.c.c. Height above ground of emission point of more than 220 feet: 5.8 pounds of sulfur dioxide per million Btu heat input.
NR 418.03(1)(c)(c) Any fossil fuel fired steam generating boiler rated at more than 25 million Btu heat input per hour firing liquid fossil fuel or liquid fossil fuel in combination with liquid or gaseous fuels:
NR 418.03(1)(c)1.1. Distillate fuel oil: that occurring from firing a distillate fuel oil with a sulfur content equal to or less than 0.50% by weight.
NR 418.03(1)(c)2.2. Residual fuel oil: that occurring from firing a residual fuel oil with a sulfur content equal to or less than 1.1% sulfur by weight.
NR 418.03(2)(2) All boilers to which sub. (1) applies shall achieve final compliance and so certify to the department on or before December 31, 1982.
NR 418.03 HistoryHistory: Renum. from NR 154.12 (5), Register, September, 1986, No. 369, eff. 10-1-86; am. (1) (intro.), (b) 2. b., (c) 1. and (2) (intro.), Register, May, 1992, No. 437, eff. 6-1-92; r. (2) (intro.) and (a) to (e), renum. (2) (f) to be (2), Register, December, 1995, No. 480, eff. 1-1-96.
NR 418.035NR 418.035 Southeastern Wisconsin intrastate AQCR. In the Southeastern Wisconsin intrastate AQCR, installations of 250 million Btu per hour or less may not burn coal with a sulfur content exceeding 1.11 pounds per million Btu in the coal.
NR 418.035 HistoryHistory: Renum. from NR 417.04 and am., Register, May, 1992, No. 437, eff. 6-1-92; am. Register, February, 1995, No. 470, eff. 3-1-95.
NR 418.04NR 418.04 Milwaukee RACT sulfur limitations.
NR 418.04(1)(1) No person may cause, allow or permit sulfur dioxide to be emitted to the ambient air within the corporate boundaries of the city of Milwaukee, Milwaukee county, from any direct source on which construction or modification was commenced prior to December 1, 1983, averaged over any 24-hour period in amounts greater than specified in this subsection.
NR 418.04(1)(a)(a) For any electrical utility installation rated at more than 250 million Btu heat input per hour, emissions from any stack may not exceed:
NR 418.04(1)(a)1.1. 3.28 pounds sulfur dioxide per million Btu heat input for solid fossil fuel, 1.60 pounds sulfur dioxide per million Btu heat input for residual fuel oil and 0.50 pounds sulfur dioxide per million Btu heat input for all other fuels, or
NR 418.04(1)(a)2.2. Q, when different fuels are burned in combination. Q is determined by the following equation:

where Q is the sulfur dioxide emission limit for a stack expressed in pounds of sulfur dioxide per million Btu heat input, X is the percent of total heat input derived from solid fossil fuel, Y is the percent of total heat input derived from residual fuel oil, and Z is the percent of total heat input derived from all other fuels.
NR 418.04(2)(2) When a source is subject to the emission limitations of sub. (1), the owner or operator shall achieve final compliance with the applicable emission limitations and so certify to the department by November 9, 1985.
NR 418.04 HistoryHistory: Renum. from NR 154.12 (6) and am. Register, September, 1986, No. 369, eff. 10-1-86; am. (1) (a), Register, May, 1992, No. 437, eff. 6-1-92; am. (1) (a) 2. and (2) (intro.), r. (2) (a) to (e), Register, December, 1995, No. 480, eff. 1-1-96.
NR 418.05NR 418.05 Green Bay and DePere RACT sulfur limitations.
NR 418.05(1)(1) No person may cause, allow or permit sulfur dioxide to be emitted to the ambient air within the corporate boundaries of the cities of Green Bay and De Pere, Brown county, from any direct source on which construction or modification was commenced prior to February 1, 1984 in amounts greater than the following:
NR 418.05(1)(a)(a) Each electric utility boiler shall comply with the following emission limitations:
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.