NR 440.686(5)(b)1.1. Method 1 or 1A, as appropriate, for selection of the sampling sites. The control device inlet sampling site for determination of vent stream molar composition or TOC, less methane and ethane, reduction efficiency shall be prior to the inlet of the control device and after the recovery system. NR 440.686(5)(b)2.2. Method 2, 2A, 2C or 2D, as appropriate, for determination of the gas volumetric flow rates. NR 440.686(5)(b)3.3. The emission rate correction factor, integrated sampling and analysis procedure of Method 3 shall be used to determine the oxygen concentration (%O2d) for the purposes of determining compliance with the 20 ppmv limit. The sampling site shall be the same as that of the TOC samples and the samples shall be taken during the same time that the TOC samples are taken. The TOC concentration corrected to 3% O2 (Cc) shall be completed using the following equation: where:
Cc is the concentration of TOC corrected to 3% O2, dry basis, ppm by volume
CTOC is the concentration of TOC (minus methane and ethane), dry basis, ppm by volume
%O2d is the concentration of O2, dry basis, percent by volume
NR 440.686(5)(b)4.4. Method 18 to determine the concentration of TOC in the control device outlet and the concentration of TOC in the inlet when the reduction efficiency of the control device is to be determined. NR 440.686(5)(b)4.a.a. The sampling time for each run shall be 1 hour in which either an integrated sample or 4 grab samples shall be taken. If grab sampling is used then the samples shall be taken at 15-minute intervals. NR 440.686(5)(b)4.b.b. The emission reduction (R) of TOC (minus methane and ethane) shall be determined using the following equation: where:
R is the emission reduction, percent by weight
Ei is the mass rate of TOC entering the control device, kg/hr (lb/hr)
Eo is the mass rate of TOC discharged to the atmosphere, kg/hr (lb/hr)
NR 440.686(5)(b)4.c.c. The mass rates of TOC (Ei, Eo) shall be computed using the following equations where:
Cij and Coj are the concentration of sample component “j” of the gas stream at the inlet and outlet of the control device, respectively, dry basis, ppm by volume
Mij and Moj are the molecular weight of sample component “j” of the gas stream at the inlet and outlet of the control device, respectively, g/g-mole (lb/lb-mole)
Qi and Qo are the flow rate of gas stream at the inlet and outlet of the control device, respectively, dscm/min (dcsf/min)
K2 is a constant, 2.494 × 10-6 (1/ppm) (g-mole/scm) (kg/g) (min/hr) for metric units, where standard temperature for (g-mole/scm) is 20°C, and 1.557 x 10-7 (1/ppm)(lb-mole/scf)(min/hr) for English units, where standard temperature for (lb-mole/scf) is 68°F
NR 440.686(5)(b)4.d.d. The TOC concentration (CTOC) is the sum of the individual components and shall be computed for each run using the following equation: where:
CTOC is the concentration of TOC (minus methane and ethane), dry basis, ppm by volume
Cj is the concentration of sample components “j”, dry basis, ppm by volume
n is the number of components in the sample
NR 440.686(5)(c)(c) When a boiler or process heater with a design heat input capacity of 44 MW (150 million Btu/hour) or greater is used to seek to comply with sub. (3) (a), the requirement for an initial performance test is waived, in accordance with s. NR 440.08 (2). However, the department reserves the option to require testing at such other times as may be required. NR 440.686(5)(e)(e) The following test methods in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 440.17, except as provided under s. NR 440.08 (2), shall be used for determining the net heating value of the gas combusted to determine compliance under sub. (3) (b) and for determining the process vent stream TRE index value to determine compliance under sub. (3) (c).