NR 440.20(6)(k)2.d.d. The owner or operator may, in lieu of installing, operating and recording data from the continuous flow monitoring system specified in sub. (7) (L), determine the mass rate (lb/hr) of NOx emissions by installing, operating and maintaining continuous fuel flow meters following the appropriate measurements procedures specified in 40 CFR part 75, Appendix D, incorporated by reference in s. NR 440.17 (1). If this compliance option is selected, the emission rate (E) of NOx shall be computed using the following equation:
(
)
´
=
where:
E is the emission rate of NOx from the duct burner, ng/J (lb/Mwh) gross output
ERsg is the average hourly emission rate of NOx exiting the steam generating unit heat input calculated using appropriate F-factor as described in Method 19 in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17 (1), ng/J (lb/million Btu)
Hcc is the average hourly heqt input rate of entire combined cycle unit, J/hr (million Btu/hr)
Occ is the average hourly gross energy output from entire combined cycle unit, J(Mwh)
NR 440.20(6)(k)3.3. When an affected duct burner steam generating unit utilizes a common steam turbine with one or more affected duct burner steam generating units, the owner or operator shall do one of the following:
NR 440.20(6)(k)3.a.a. Determine compliance with the applicable NOx emissions limits by measuring the emissions combined with the emissions from the other units utilizing the common steam turbine.
NR 440.20(6)(k)3.b.b. Develop, demonstrate and provide information satisfactory to the department on methods for apportioning the combined gross energy output from the steam turbine for each of the affected duct burners. The department may approve a demonstrated substitute method for apportioning the combined gross energy output measured at the steam turbine whenever the demonstration ensures accurate estimation of emissions regulated under this section.
NR 440.20(7)(7)Emission monitoring.
NR 440.20(7)(a)(a) The owner or operator of an affected facility shall install, calibrate, maintain and operate a continuous monitoring system, and record the output of the system, for measuring the opacity of emissions discharged to the atmosphere, except where gaseous fuel is the only fuel combusted. If opacity interference due to water droplets exists in the stack (for example, from the use of a flue gas desulfurization (FGD) system), the opacity shall be monitored upstream of the interference (at the inlet to the FGD system). If opacity interference is experienced at all locations (both at the inlet and outlet of the sulfur dioxide control system), alternate parameters indicative of the particulate matter control system’s performance shall be monitored (subject to the approval of the department).
NR 440.20(7)(b)(b) The owner or operator of an affected facility shall install, calibrate, maintain and operate a continuous monitoring system, and record the output of the system, for measuring sulfur dioxide emissions, except where natural gas is the only fuel combusted, as follows:
NR 440.20(7)(b)1.1. Sulfur dioxide emissions shall be monitored at both the inlet and outlet of the sulfur dioxide control device.
NR 440.20(7)(b)2.2. For a facility which qualifies under the provisions of sub. (4) (d), sulfur dioxide emissions shall only be monitored as discharged to the atmosphere.
NR 440.20(7)(b)3.3. An “as fired” fuel monitoring system (upstream of coal pulverizers) meeting the requirements of Method 19, 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17, may be used to determine potential sulfur dioxide emissions in place of a continuous sulfur dioxide emission monitor at the inlet to the sulfur dioxide control device as required under subd. 1.
NR 440.20(7)(c)(c)
NR 440.20(7)(c)1.1. The owner or operator of an affected facility shall install, calibrate, maintain and operate a continuous monitoring system, and record the output of the system for measuring nitrogen oxides emissions discharged to the atmosphere, except as provided in subd. 2.
NR 440.20(7)(c)2.2. If the owner or operator has installed a nitrogen oxides emission rate continuous emission monitoring system (CEMS) to meet the requirements of 40 CFR part 75 and is continuing to meet the ongoing requirements of 40 CFR part 75, that CEMS may be used to meet the requirement of this paragraph, except that the owner or operator shall also meet the requirements of sub. (9). Data reported to meet the requirements of sub. (9) may not include data substituted using the missing data procedures in 40 CFR part 75, subpart D, nor shall the data have been bias adjusted according to the procedures of 40 CFR part 75.
NR 440.20(7)(d)(d) The owner or operator of an affected facility shall install, calibrate, maintain and operate a continuous monitoring system, and record the output of the system, for measuring the oxygen or carbon dioxide content of the flue gases at each location where sulfur dioxide or nitrogen oxides emissions are monitored.
NR 440.20(7)(e)(e) The continuous monitoring systems under pars. (b), (c) and (d) shall be operated and data recorded during all periods of operation of the affected facility including periods of startup, shutdown, malfunction or emergency conditions, except for continuous monitoring system breakdowns, repairs, calibration checks and zero and span adjustments.
NR 440.20(7)(f)(f) The owner or operator shall obtain emission data for at least 18 hours in at least 22 out of 30 successive boiler operating days. If this minimum data requirement cannot be met with a continuous monitoring system, the owner or operator shall supplement emission data with other monitoring systems approved by the department or the reference methods and procedures as described in par. (h).
NR 440.20(7)(g)(g) The one-hour averages required under s. NR 440.13 (8) shall be expressed in ng/J (lbs/million Btu) heat input and used to calculate the average emission rates under sub. (6). The one-hour averages shall be calculated using the data points required under s. NR 440.13 (2). At least 2 data points shall be used to calculate the one-hour averages.
NR 440.20(7)(h)(h) When it becomes necessary to supplement continuous monitoring system data to meet the minimum data requirements in par. (f), the owner or operator shall use the reference methods and procedures as specified in this paragraph. Acceptable alternative methods and procedures are given in par. (j).
NR 440.20(7)(h)1.1. Method 6 shall be used to determine the SO2 concentration at the same location as the SO2 monitor. Samples shall be taken at 60 minute intervals. The sampling time and sample volume for each sample shall be at least 20 minutes and 0.020 dscm (0.71 dscf). Each sample represents a 1-hour average.
NR 440.20(7)(h)2.2. Method 7 shall be used to determine the NOx concentration at the same location as the NOx monitor. Samples shall be taken at 30-minute intervals. The arithmetic average of 2 consecutive samples represent a 1-hour average.
NR 440.20(7)(h)3.3. The emission rate correction factor, integrated bag sampling and analysis procedure of Method 3B shall be used to determine the O2 or CO2 concentration at the same location as the O2 or CO2 monitor. Samples shall be taken for at least 30 minutes in each hour. Each sample represents a 1-hour average.
NR 440.20(7)(h)4.4. The procedures in Method 19 shall be used to compute each 1-hour average concentration in ng/J (lb/million Btu) heat input.
NR 440.20(7)(i)(i) The owner or operator shall use methods and procedures in this paragraph to conduct monitoring system performance evaluations under s. NR 440.13 (3) and calibration checks under s. NR 440.13 (4). Acceptable alternative methods and procedures are given in par. (j).