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 418.05(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)1.1. Any electric utility boiler with the emission point at a height above ground of not less than 377 feet: 5.58 pounds of sulfur dioxide per million Btu heat input.

NR 418.05(1)(a)2.2. Any electric utility boiler with the emission point at a height above ground of less than 377 feet: 0.50 pounds of sulfur dioxide per million Btu heat input.

NR 418.05(1)(b)1.1. Each steam generating boiler capable of firing coal, spent sulfite liquor or other fuels: 5.95 pounds of sulfur dioxide per million Btu heat input.

NR 418.05(1)(b)3.3. Any pulp digester blow stack: 6.03 pounds of sulfur dioxide per hour.

NR 418.05(1)(b)4.4. All brown stock washers: a total of 23.18 pounds of sulfur dioxide per hour, from all washers.

NR 418.05(1)(b)5.5. All paper dryers: a total of 94.13 pounds of sulfur dioxide per hour, from all dryers.

NR 418.05(1)(b)6.6. All other sources not described in subds. 1. to 6.: a total of 15.71 pounds of sulfur dioxide per hour.

NR 418.05(1)(c)(c) Any paper mill in Green Bay located between milepoints 3.3 and 4.0 on the Fox river shall comply with the following emission limitations:

NR 418.05(1)(c)1.1. Fossil fuel fired steam generating boilers with the emission point at a height above ground of not less than 355 feet: maximum emission from any stack of 4.55 pounds of sulfur dioxide per million Btu heat input.

NR 418.05(1)(c)2.2. Fossil fuel fired steam generating boilers with the emission point at a height above ground of less than 355 feet: maximum emission from any stack of 0.50 pounds of sulfur dioxide per million Btu heat input.

NR 418.05(1)(c)3.3. All paper dryers: a total of 26.51 pounds of sulfur dioxide per hour from all dryers.

NR 418.05(1)(d)(d) Any paper mill in DePere located between milepoints 7.0 and 7.4 on the Fox river shall comply with the following emission limitations:

NR 418.05(1)(d)1.1. Each fossil fuel fired steam generating boiler rated at less than or equal to 100 million Btu per hour: 2.54 pounds of sulfur dioxide per million Btu heat input.

NR 418.05(1)(d)2.2. Each fossil fuel fired steam generating boiler rated at greater than 100 million Btu per hour with the emission point at a height above ground of not less than 211 feet: 3.20 pounds of sulfur dioxide per million Btu heat input.

NR 418.05(1)(d)3.3. Each fossil fuel fired steam generating boiler rated at greater than 100 million Btu per hour with the emission point at a height above ground of less than 211 feet: 0.50 pounds of sulfur dioxide per million Btu heat input.

NR 418.05(1)(e)1.1. Steam generating boilers with the emission point at a height above ground of not less than 212 feet: maximum emission from any stack of 3.88 pounds of sulfur dioxide per million Btu heat input when the boilers are fired at or below 158 million Btu per hour; maximum emission from any stack of 3.15 pounds of sulfur dioxide per million Btu heat input when the boilers are fired at a rate greater than 158 million Btu per hour and less than 309 million Btu per hour; and maximum emission from any stack of 2.87 pounds of sulfur dioxide per million Btu heat input when the boilers are fired at a rate of 309 million Btu per hour or greater.

NR 418.05(1)(e)2.2. Steam generating boilers with the emission point at a height above ground of less than 212 feet: maximum emission from any stack of 0.50 pounds of sulfur dioxide per million Btu heat input.

NR 418.05(1)(f)(f) Any calcium based sulfite pulp and paper mill and any calcium based lignin chemical processing facility shall comply with the following emission limitations:

NR 418.05(1)(f)1.1. Fossil fuel fired steam generating boilers: maximum emission from any stack of 2.10 pounds of sulfur dioxide per million Btu heat input when the boilers are fired above 360 million Btu per hour; and maximum emission from any stack of 2.31 pounds of sulfur dioxide per million Btu heat input when the boilers are fired at or below 360 million Btu per hour.