K1 is a constant, 1.740 x 10-7 (1/ppm)(g-mole/scm)(MJ/kcal) for metric units where standard temperature for (g-mole/scm) is 20°C, and 1.03 x 10-11 (1/ppm)(lb-mole/scf)(Btu/kcal) for English units where standard temperature for (lb-mole/scf) is 68°F

Cj is the concentration on a wet basis of compound j in ppm, as measured for organics by Method 18 and measured for hydrogen and carbon monoxide by ASTM D1946-90 (reapproved 1994), incorporated by reference in s. NR 440.17 (2) (a) 24., as indicated in subd. 2.

Hj is the net heat of combustion of compound j, kcal/g-mole (kcal/lb-mole), based on combustion at 25°C and 760 mm Hg (77°F and 30 in Hg). The heats of combustion of vent stream components would be required to be determined using ASTM D2382-88 or D4809-95, incorporated by reference as specified in s. NR 440.17 (2) (a) 30. and 61., if published values are not available or cannot be calculated.

The heats of combustion of vent stream components would be required to be determined using ASTM D2382-76, incorporated by reference as specified in s. NR 440.17, if published values are not available or cannot be calculated.

NR 440.686(5)(e)5.5. The emission rate of TOC in the vent stream shall be calculated using the following equation:

K2 is the 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

Cj is the concentration on a wet basis of compound j in ppm as measured by Method 18 as indicated in subd. 2.

NR 440.686(5)(e)6.6. The total process vent stream concentration (by volume) of compounds containing halogens (ppmv, by compound) shall be summed from the individual concentrations of compounds containing halogens which were measured by Method 18.

NR 440.686(5)(f)(f) For purpose of complying with sub. (3) (c), the owner or operator of a facility affected by this section shall calculate the TRE index value of the vent stream using the equation for incineration in subd. 1. for halogenated vent streams. The owner or operator of an affected facility with a nonhalogenated vent stream shall determine the TRE index value by calculating values using both the incinerator equation in subd. 1. and the flare equation in subd. 2. and selecting the lower of the 2 values.

NR 440.686(5)(f)1.1. The equation for calculating the TRE index value of a vent stream controlled by an incinerator is as follows:

NR 440.686(5)(f)1.a.a. Where for a vent stream flow rate that is greater than or equal to 14.2 scm/min (501 scf/min) at a standard temperature of 20°C (68°F):

HT is the vent stream net heating value MJ/scm (Btu/scf), where the net enthalpy per mole of vent stream is based on combustion at 25°C and 760 mm Hg (68°F and 30 in Hg), but the standard temperature for determining the volume corresponding to one mole is 20°C (68°F), as in the definition of Qs

Ys = Qs for all vent stream categories listed in Table 1 except for Category E vent streams where Ys = (Qs) (HT)/3.6 for metric units and Ys = (Qs)(HT)/97 for English units.

a,b,c,d,e and f are coefficients. The set of coefficients that apply to a vent stream shall be obtained from Table 1.

NR 440.686(5)(f)1.b.b. Where for a vent stream flow rate that is less than 14.2 scm/min (501 scf/min) at a standard temperature of 20°C (68°F):