NR 661.1034(2)(f)(f) The instrument probe shall be traversed around all potential leak interfaces as close to the interface as possible as described in Reference Method 21 in appendix A of 40 CFR part 60, incorporated by reference in s. NR 660.11. NR 661.1034(2)(g)(g) The arithmetic difference between the maximum concentration indicated by the instrument and the background level shall be compared with 500 ppm for determining compliance. NR 661.1034(3)(a)(a) Performance tests to determine total organic compound concentrations and mass flow rates entering and exiting control devices shall be conducted and data reduced in accordance with all of the following reference methods and calculation procedures: NR 661.1034(3)(a)2.2. Method 18 or Method 25A in appendix A of 40 CFR part 60, incorporated by reference in s. NR 660.11, for organic content. If Method 25A is used, the organic HAP used as the calibration gas shall be the single organic HAP representing the largest percent by volume of the emissions. The use of Method 25A is acceptable if the response from the high-level calibration gas is at least 20 times the standard deviation of the response from the zero calibration gas when the instrument is zeroed on the most sensitive scale. NR 661.1034(3)(a)3.3. Each performance test shall consist of 3 separate runs. Each run shall be conducted for at least 1 hour under the conditions that exist when the hazardous secondary material management unit is operating at the highest load or capacity level reasonably expected to occur. For the purpose of determining total organic compound concentrations and mass flow rates, the average of results of all runs shall apply. The average shall be computed on a time-weighted basis. NR 661.1034(3)(a)4.4. Total organic mass flow rates shall be determined by one of the following equations: Where:
Eh= Total organic mass flow rate, kg/h
Q2sd= Volumetric flow rate of gases entering or exiting control device, as determined by Method 2, dscm/h
n = Number of organic compounds in the vent gas
Ci= Organic concentration in ppm, dry basis, of compound i in the vent gas, as determined by Method 18
MWi= Molecular weight of organic compound i in the vent gas, kg/kg-mol
0.0416 = Conversion factor for molar volume, kg-mol/m3 (@293 K and 760 mm Hg)
10-6 = Conversion from ppm
Where:
Eh= Total organic mass flow rate, kg/h
Q = Volumetric flow rate of gases entering or exiting control device, as determined by Method 2, dscm/h
C = Organic concentration in ppm, dry basis, as determined by Method 25A
MW = Molecular weight of propane, 44
0.0416 = Conversion factor for molar volume, kg-mol/m3 (@293 K and 760 mm Hg)
10-6 = Conversion from ppm.
NR 661.1034(3)(a)5.5. The annual total organic emission rate shall be determined by the following equation: