NR 440.19(6)(g)2.a.a. Any 3-hour period during which the average emissions (arithmetic average of 3 contiguous one-hour periods) of sulfur dioxide as measured by a continuous monitoring system exceed the applicable standard under sub. (4). NR 440.19(6)(g)3.3. Nitrogen oxides. Excess emissions for affected facilities using a continuous monitoring system for measuring nitrogen oxides are defined as any 3-hour period during which the average emissions (arithmetic average of 3 contiguous one-hour periods) exceed the applicable standards under sub. (5). NR 440.19(7)(a)(a) In conducting the performance tests required in s. NR 440.08, the owner or operator shall use as reference methods and procedures the test methods in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 440.17, or other methods and procedures as specified in this subsection, except as provided in s. NR 440.08 (2). Acceptable alternative methods and procedures are given in par. (d). NR 440.19(7)(b)(b) The owner or operator shall determine compliance with the particulate matter, SO2 and NOx standards in subs. (3), (4) and (5) as follows: NR 440.19(7)(b)1.1. The emission rate (E) of particulate matter, SO2 or NOx shall be computed for each run using the following equation: E = CFd (20.9)/(20.9 - %02)
where:
E is the emission rate of pollutant, ng/J (lb/million Btu)
C is the concentration of pollutant, ng/dscm (lb/dscf)
%O2 is the oxygen concentration, percent dry basis
Fd is the factor as determined from Method 19
NR 440.19(7)(b)2.2. Method 5 shall be used to determine the particulate matter concentration (C) at affected facilities without wet flue-gas-desulfurization (FGD) systems and Method 5B shall be used to determine the particulate matter concentration (C) after FGD systems. NR 440.19(7)(b)2.a.a. The sampling time and sample volume for each run shall be at least 60 minutes and 0.85 dscm (30 dscf). The probe and filter holder heating systems in the sampling train shall be set to provide an average gas temperature of 160±14°C (320±25°F). NR 440.19(7)(b)2.b.b. The emission rate correction factor, integrated or grab sampling and analysis procedure of Method 3B shall be used to determine the O2 concentration (%O2). The O2 sample shall be obtained simultaneously with, and at the same traverse points as, the particulate sample. If the grab sampling procedure is used, the O2 concentration for the run shall be the arithmetic mean of the sample O2 concentrations at all traverse points. NR 440.19(7)(b)2.c.c. If the particulate run has more than 12 traverse points, the O2 traverse points may be reduced to 12 provided that Method 1 is used to locate the 12 O2 traverse points. NR 440.19(7)(b)4.a.a. The sampling site shall be the same as that selected for the particulate sample. The sampling location in the duct shall be at the centroid of the cross section or at a point no closer to the walls than 1 m (3.28 ft). The sampling time and sample volume for each sample run shall be at least 20 minutes and 0.020 dscm (0.71 dscf). Two samples shall be taken during a 1-hour period, with each sample taken within a 30-minute interval. NR 440.19(7)(b)4.b.b. The emission rate correction factor, integrated sampling and analysis procedure of Method 3B shall be used to determine the O2 concentration (%O2). The O2 sample shall be taken simultaneously with, and at the same point as, the SO2 sample. The SO2 emission rate shall be computed for each pair of SO2 and O2 samples. The SO2 emission rate (E) for each run shall be the arithmetic mean of the results of the 2 pairs of samples. NR 440.19(7)(b)5.a.a. The sampling site and location shall be the same as for the SO2 sample. Each run shall consist of 4 grab samples, with each sample taken at about 15-minute intervals. NR 440.19(7)(b)5.b.b. For each NOx sample, the emission rate correction factor, grab sampling and analysis procedure of Method 3B shall be used to determine the O2 concentration (%O2). The sample shall be taken simultaneously with, and at the same point as, the NOx sample. NR 440.19(7)(b)5.c.c. The NOx emission rate shall be computed for each pair of NOx and O2 samples. The NOx emission rate (E) for each run shall be the arithmetic mean of the results of the 4 pairs of samples. NR 440.19(7)(c)(c) When combinations of fossil fuels or fossil fuel and wood residue are fired, the owner or operator, in order to compute the prorated standard as shown in subs. (4) (b) and (5) (b), shall determine the percentage (w, x, y, or z) of the total heat input derived from each type of fuel as follows: NR 440.19(7)(c)1.1. The heat input rate of each fuel shall be determined by multiplying the gross calorific value of each fuel fired by the rate of each fuel burned. NR 440.19(7)(c)2.2. ASTM method D2015-96 or D5865-98 (solid fuels), D240-92 (liquid fuels) or D1826-94 (gaseous fuels), incorporated by reference in s. NR 440.17 (2) (a) 26., 66., 9. and 21., respectively, shall be used to determine the gross calorific values of the fuels. The method used to determine the calorific value of wood residue shall be approved by the department. NR 440.19(7)(c)3.3. Suitable methods shall be used to determine the rate of each fuel burned during each test period, and a material balance over the steam generating system shall be used to confirm the rate. NR 440.19(7)(d)(d) The owner or operator may use the following as alternatives to the reference methods and procedures in this subsection or in other subsections as specified: