Section 463.166. Equations for determining compliance.

 

(1)   THC emission limit. The owner or operator of an emission unit subject to a THC emission limit shall use Equation 6 to determine compliance with the THC emission limit in s. NR 463.13 :

- See PDF for diagram (Equation 6)

where:

E is the emission rate of measured pollutant, kg/Mg (lb/ton) of feed

C is the measured volume fraction of pollutant, ppmv

MW is the molecular weight of measured pollutant, g/g-mole (lb/lb-mole): THC, as propane, has a molecular weight of 44.11

Q is the volumetric flow rate of exhaust gases, dscm/hr (dscf/hr)

K 1 is the conversion factor, 1 kg/1,000 g (1 lb/lb)

K 2 is the conversion factor, 1,000 L/m 3 (1 ft 3 /ft 3 )

M v is the molar volume, 24.45 L/g-mole (385.3 ft 3 /lb-mole)

P is the production rate, Mg/hr (ton/hr)

(2)   PM, HCL and D&F emission limits.

(a) The owner or operator of an emission unit subject to a PM or HCl emission limit shall use Equation 7 to determine compliance with the PM or HCl emission limit in s. NR 463.13 :

- See PDF for diagram (Equation 7)

where:

E is the emission rate of PM or HCl, kg/Mg (lb/ton) of feed

C is the concentration of PM or HCl, g/dscm (gr/dscf)

Q is the volumetric flow rate of exhaust gases, dscm/hr (dscf/hr)

K 1 is the conversion factor, 1 kg/1,000 g (1 lb/7,000 gr)

P is the production rate, Mg/hr (ton/hr)

(b) The owner or operator of an emission unit subject to a D&F emission limit shall use Equation 7A to determine compliance with the emission limit in s. NR 463.13 :

- See PDF for diagram (Equation 7A)

where:

E is the emission rate of D&F, m g/Mg (gr/ton) of feed;

C is the concentration of D&F, m g/dscm (gr/dscf);

Q is the volumetric flow rate of exhaust gases, dscm/hr (dscf/hr); and

P is the production rate, Mg/hr (ton/hr).

(3)   HCL percent reduction standard. The owner or operator of an emission unit subject to the HCl percent reduction standard shall use Equation 8 to determine compliance with the HCl percent reduction standard in s. NR 463.13 :

- See PDF for diagram (Equation 8)

where:

%R is the percent reduction of the control device

L i is the inlet loading of pollutant, kg/Mg (lb/ton)

L o is the outlet loading of pollutant, kg/Mg (lb/ton)

(4)   Conversion of D&F measurements to TEQ units. To convert D&F measurements to TEQ units, the owner or operator shall use the procedures and equations in Interim Procedures for Estimating Risks Associated with Exposures to Mixtures of Chlorinated Dibenzo-p-Dioxins and -Dibenzofurans (CDDs and CDFs) and 1989 Update (EPA-625/3-89-016), incorporated by reference in s. NR 484.05 (12) .

(5)   Secondary aluminum processing unit. The owner or operator of a secondary aluminum processing unit shall use the procedures in pars. (a) to (c) or the procedure in par. (d) to determine compliance with emission limits in s. NR 463.13 for a secondary aluminum processing unit.

(a) Use Equation 9 to compute the mass-weighted PM emissions for a secondary aluminum processing unit. Compliance is achieved if the mass-weighted emissions for the secondary aluminum processing unit (E cPM ) is less than or equal to the emission limit for the secondary aluminum processing unit (L cPM calculated using Equation 1 in s. NR 463.13 (11) ).

- See PDF for diagram (Equation 9)

where:

- See PDF for diagram is the mass-weighted PM emissions for the secondary aluminum processing unit

- See PDF for diagram is the measured PM emissions for individual emission unit i

- See PDF for diagram is the average feed rate for individual emission unit i during the operating cycle or performance test period

n is the number of emission units in the secondary aluminum processing unit

(b) Use Equation 10 to compute the aluminum mass-weighted HCl emissions for the secondary aluminum processing unit. Compliance is achieved if the mass-weighted emissions for the secondary aluminum processing unit (E cHCl ) is less than or equal to the emission limit for the secondary aluminum processing unit (L cHCl ) calculated using Equation 2 in s. NR 463.13 (11) .

- See PDF for diagram (Equation 10)

where:

- See PDF for diagram is the mass-weighted HCl emissions for the secondary aluminum processing unit

- See PDF for diagram is the measured HCl emissions for individual emission unit i

(c) Use Equation 11 to compute the aluminum mass-weighted D&F emissions for the secondary aluminum processing unit. Compliance is achieved if the mass-weighted emissions for the secondary aluminum processing unit is less than or equal to the emission limit for the secondary aluminum processing unit. The emission limit for the secondary aluminum processing unit (L cD&F ) is calculated using Equation 3 in s. NR 463.13 (11) .

- See PDF for diagram (Equation 11)

where:

- See PDF for diagram is the mass-weighted D&F emissions for the secondary aluminum processing unit

- See PDF for diagram is the measured D&F emissions for individual emission unit i

(d) As an alternative to using the equations in pars. (a) to (c) , the owner or operator may demonstrate compliance for a secondary aluminum processing unit by demonstrating that each existing group 1 furnace is in compliance with the emission limits for a new group 1 furnace in s. NR 463.13 (9) and that each existing in-line fluxer is in compliance with the emission limits for a new in-line fluxer in s. NR 463.13 (10) .

CR 04-023 : cr. Register December 2008 No. 636 , eff. 1-1-09.