NR 440.20(6)(k)1.b.b. Use Method 7E in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17 (1), to determine the NOx concentrations (Csg and Cte). Use Method 2, 2F or 2G in 40 CFR part 60, Appendix A, as appropriate, to determine the volumetric flow rates (Qsg and Qte) of the exhaust gases. The volumetric flow rate measurements shall be taken at the same time as the concentration measurements.

NR 440.20(6)(k)1.c.c. Develop, demonstrate and provide information satisfactory to the department to determine the average hourly gross energy output from the steam generating unit, and the average hourly percentage of the total heat input to the steam generating unit derived from the combustion of fuel in the affected duct burner.

NR 440.20(6)(k)1.d.d. Determine compliance with the emissions limits under sub. (5) (d) 1. by the 3-run average (nominal 1-hour runs) for the initial and subsequent performance tests.

NR 440.20(6)(k)2.b.b. Use the continuous emissions monitoring system specified under sub. (7) for measuring NOx and oxygen to determine the average hourly NOx concentrations (Csg). The continuous flow monitoring system specified in sub. (7) (L) shall be used to determine the volumetric flow rate (Qsg) of the exhaust gas. The sampling site shall be located at the outlet from the steam generating unit. Data from a continuous flow monitoring system certified or recertified following procedures specified in 40 CFR 75.20, meeting the quality assurance and quality control requirements of 40 CFR 75.21 and validated according to 40 CFR 75.23 may be used.

NR 440.20(6)(k)2.c.c. Use the continuous monitoring system specified under sub. (7) (k) for measuring and determining gross energy output to determine the average hourly gross energy output from the entire combined cycle unit (Occ), which is the combined output from the combustion turbine and the steam generating unit.

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:

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)

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)(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: