NR 440.26(7)(h)2.2. Calculate a 7-day average (arithmetic mean) concentration of sulfur dioxide for the inlet and for the outlet to the add-on control device using all of the 1-hour average concentration values obtained during 7 successive 24-hour periods. NR 440.26(7)(h)3.3. Calculate the 7-day average percent reduction using the following equation: where:
is the 7-day average sulfur dioxide emission reduction percent is the sulfur dioxide emission concentration determined in subd. 2. at the inlet to the add-on control device, ppmv is the sulfur dioxide emission concentration determined in subd. 2. at the outlet to the add-on control device, ppmv 100 is the conversion factor, decimal to percent
NR 440.26(7)(h)4.4. Outlet concentrations of sulfur dioxide from the add-on control device for compliance with the 50 ppmv standard, reported on a dry, O2-free basis, shall be calculated using the procedures outlined in subds. 1. and 2., but for the outlet monitor only. NR 440.26(7)(h)5.5. If supplemental sampling data are used for determining the 7-day averages under this paragraph and the data are not hourly averages, then the value obtained for each supplemental sample shall be assumed to represent the hourly average for each hour over which the sample was obtained. NR 440.26(7)(h)6.6. For the purpose of adjusting pollutant concentrations to zero percent oxygen, the following equation shall be used: Cadj = Cmeas[20.9c/(20.9 - %O2)]
where:
Cadj is the pollutant concentration adjusted to zero percent oxygen, ppm or g/dscm
Cmeas is the pollutant concentration measured on a dry basis, ppm or g/dscm
20.9c is the 20.9% oxygen-0.0% oxygen (defined oxygen correction basis), percent
20.9 is the oxygen concentration in air, percent
%O2 is the oxygen concentration measured on a dry basis, percent
NR 440.26(7)(i)(i) For the purpose of determining compliance with sub. (5) (b) 2., the following reference methods from 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17, and calculation procedures shall be used except as provided in subd. 12.: NR 440.26(7)(i)2.2. For gases released to the atmosphere from the fluid catalytic cracking unit catalyst regenerator: NR 440.26(7)(i)2.a.a. Method 8 as modified in subd. 3. for moisture content and for the concentration of sulfur oxides calculated as sulfur dioxide. NR 440.26(7)(i)2.c.c. Method 2 calculation procedures, data obtained from Methods 3 and 8, for velocity and volumetric flow rate. NR 440.26(7)(i)3.3. Method 8 shall be modified by the insertion of a heated glass fiber filter between the probe and first impinger. The probe liner and glass fiber filter temperature shall be maintained above 160°C (320°F). The isopropanol impinger shall be eliminated. Sample recovery procedures described in Method 8 for container No. 1 shall be eliminated. The heated glass fiber filter also shall be excluded; however, rinsing of all connecting glassware after the heated glass fiber filter shall be retained and included in container No. 2. Sampled volume shall be at least 1 dscm. NR 440.26(7)(i)6.6. All testing shall be performed at the same location. Where the gases discharged by the fluid catalytic cracking unit catalyst regenerator pass through an incinerator-waste heat boiler in which auxiliary or supplemental gaseous, liquid or solid fossil fuel is burned, testing shall be conducted at a point between the regenerator outlet and the incinerator-waste heat boiler. An alternative sampling location after the waste heat boiler may be used if alternative coke burn-off rate equations, and, if requested, auxiliary/supplemental fuel SOx credits, have been submitted to and approved by the department prior to sampling. NR 440.26(7)(i)7.7. Coke burn-off rate shall be determined using the procedures specified under par. (b) 3., unless subd. 6. applies.