Wis. Admin. Code NR 446.18
Emission determination and compliance demonstration
Cite as Wis. Admin. Code NR § 446.18
Emission determination and compliance demonstration.
(1) Monitoring requirements. Owners and operators of a coal-fired EGU affected by this subchapter shall monitor emissions, heat input, electricity generation and process thermal energy, as required to demonstrate compliance, according to the following methods and specifications:
(a) For NO x and SO 2 , hourly mass emissions according to 40 CFR part 75 and 40 CFR part 75 , Appendices A to I, incorporated by reference in ss. NR 484.03 (7) and 484.04 (27) respectively.
(b) For mercury, hourly mass emissions using continuous emission monitoring. By December 31, 2013, the department shall promulgate rules that specify the requirements for continuous emission monitoring for purposes of this paragraph.
(c) For heat input flow rate and hourly heat input, according to 40 CFR part 75 and 40 CFR part 75 , Appendices A to I, incorporated by reference in ss. NR 484.03 (7) and 484.04 (27) respectively.
(d) For gross electric output, hourly megawatt-hours using continuous monitoring.
(e) For process thermal energy input, hourly mmBtus delivered to the process using continuous monitoring.
(2) Determining annual actual emissions. Owners and operators of a coal-fired EGU affected by this subchapter shall determine annual mass of actual emissions for each pollutant as the sum of monitored emissions according to Equation 1.
(3) Determining annual fuel mercury content. Owners and operators of a coal-fired EGU affected by this subchapter shall determine the annual mass of mercury contained in all combusted fuels, as required to demonstrate compliance, according to the following procedures:
(a) Calculate the mass of mercury contained in each fuel for each month, according to Equation 2, as the mercury concentration in fuel combusted each month as determined following the procedures in s. NR 446.07 (1) , (2) and (3) according to solid and non-solid types of fuel, multiplied by the amount of fuel, in mmBtu, combusted each month as determined following the procedures in s. NR 446.07 (4) .
(b) Calculate the annual mass of mercury, according to Equation 3, as the sum of mercury contained in all fuels combusted for all months during the compliance year.
(4) Determining annual gross output. Owners and operators of a coal-fired EGU affected by this subchapter shall determine the annual gross energy output in gigawatt-hours, as required to demonstrate compliance, according to the following procedures:
(a) Calculate the annual gross electric output in gigawatt-hours, according to Equation 4, as the sum of gross electric output measured in megawatt-hours for each hour the EGU is operating.
(b) Calculate the annual amount of useful thermal energy in mmBtu, according to Equation 5, as the sum of the process thermal energy input for each hour the EGU is operated multiplied by the process energy efficiency.
(c) Calculate the annual gross energy output in mmBtu, according to Equation 6, as the sum of the annual gross electric output and the annual applied thermal energy converted to electric output.
(5) Determining annual allowable emissions. Except as provided in s. NR 446.185 , owners and operators of a coal-fired EGU affected by this subchapter shall determine annual allowable emissions, as required to demonstrate compliance, according to the following procedures:
(a) When achieving compliance on a unit-by-unit basis, use one of the following equations as applicable:
1. For a percent reduction mercury emission limitation, Equation 7.
2. For a mercury output emission limitation, Equation 8.