Section 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.

3. For an NO x or SO 2 emission limitation, Equation 9.

(b) When achieving compliance using unit averaging as allowed under s. NR 446.13 (2) (b) or 446.14 (2) (b) , according to Equation 10:

CR 07-036 : cr. Register November 2008 No. 635 , eff. 12-1-08.

Note

On February 8, 2008, the U.S. District Court of Appeals for the D.C. Circuit vacated rules the department had intended to rely on related to continuous emission monitoring for mercury emissions. (See New Jersey, et. al. v. Environmental Protection Agency , D.C. Ct. App. No 05-1097 , February 8, 2008.) Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram   Equation 1 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 P actual is the mass of mercury, NO x or SO 2 emitted during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 P monitored is the mass of mercury, NO x or SO 2 emissions monitored and determined for each hour i the EGU is operated during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 n is the number of hours the EGU is operating during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram   Equation 2 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 Fuel Hg fm is the mass of mercury contained in fuel f, in month m Microsoft Windows NT 6.1.7601 Service Pack 1 HI fm is the heat input of the combusted fuel f, in month m Microsoft Windows NT 6.1.7601 Service Pack 1 Hg C fm is the mercury concentration for fuel f, in month m Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram   Equation 3 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 Fuel Hg annual is the mass amount of mercury contained in all fuels combusted during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 Fuel Hg i is the mercury mass content for fuel i, combusted in month m, during the compliance year determined in par. (a) Microsoft Windows NT 6.1.7601 Service Pack 1 f is number of fuels combusted during the compliance month Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram   Equation 4 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 E GWh is the total annual gross electric output in GWh Microsoft Windows NT 6.1.7601 Service Pack 1 MWh i is the gross electric output in MWh for each hour i the EGU operated during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 1,000 is the factor to convert MWh to GWh Microsoft Windows NT 6.1.7601 Service Pack 1 n is the number of hours the EGU operated during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram   Equation 5 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 UTE annual is the annual amount of thermal energy, in mmBtu, utilized in the cogeneration process Microsoft Windows NT 6.1.7601 Service Pack 1 PTEI i is the amount of thermal energy input, in mmBtu, made available to the cogeneration process for each hour i the EGU operated during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 PEE is the process energy efficiency, expressed as a percent, measured for the EGU. A value of 50% may be assumed. Microsoft Windows NT 6.1.7601 Service Pack 1 n is the number of hours the unit operated during the year of compliance Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram   Equation 6 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 GEO GWh is the total annual gross energy output in GWh Microsoft Windows NT 6.1.7601 Service Pack 1 E GWh is the total annual gross electric output in GWh determined in par. (a) Microsoft Windows NT 6.1.7601 Service Pack 1 UTE annual is the total annual useful thermal energy in mmBtu determined in par. (b) Microsoft Windows NT 6.1.7601 Service Pack 1 3,413 is the factor to convert thermal energy in mmBtu to GWh Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram
  Equation 7 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 Hg allowable is the mass of mercury emissions allowed for the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 Fuel Hg annual is the mass of mercury in fuel combusted during the compliance year as determined in sub. (3) (b) . Microsoft Windows NT 6.1.7601 Service Pack 1 Hg CE is the applicable requirement for percent mercury emission reduction divided by 100. Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram   Equation 8 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 Hg allowable is the mass of mercury emissions in pounds allowed for the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 GEO GWh is the annual gross energy output during the compliance year as determined in sub. (4) (c) Microsoft Windows NT 6.1.7601 Service Pack 1 EL output is the applicable mercury output based emission limitation in pounds per GWh Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram   Equation 9 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 P allowable is the mass of NO x or SO 2 emissions allowed for the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 HI i is the amount of fuel, in mmBtu combusted each hour i, during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 h is the number of hours fuel is combusted during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 EL p is the applicable emission limitation of s. NR 446.14 (1) for NO x or SO 2 Microsoft Windows NT 6.1.7601 Service Pack 1 - See PDF for diagram   Equation 10 Microsoft Windows NT 6.1.7601 Service Pack 1 where: Microsoft Windows NT 6.1.7601 Service Pack 1 Unit Averaging P allowable is the mass of mercury, NO x, or SO 2 emissions allowed for each pollutant determined in par. (a) for each EGU participating in emissions averaging during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 P u is the lowest annual allowable mass of mercury, NO x or SO 2 emissions allowed for the compliance year for each EGU as determined under par. (a) or applicable under any other enforceable state or federal requirement for each EGU participating in emissions averaging during the compliance year Microsoft Windows NT 6.1.7601 Service Pack 1 n is the number of EGUs participating in emissions averaging Microsoft Windows NT 6.1.7601 Service Pack 1