NR 463.25(3)(e)2.c.
c. Calculate the average VOHAP or TGNMO concentration for the source test as the arithmetic average of the concentrations measured for the individual test runs and determine the average concentration of total hydrocarbon, as hexane, as measured by the CEMS during all test runs.
where:
C
VOHAP,avg is the average concentration of VOHAP for the source test in ppmv as measured by Method 18 in
40 CFR part 60, Appendix A, incorporated by reference in
s. NR 484.04 (16), or the average concentration of TGNMO for the source test in ppmv as hexane as measured by Method 25 in
40 CFR part 60, Appendix A, incorporated by reference in
s. NR 484.04 (19)
CCEM is the average concentration of total hydrocarbons in ppmv as hexane as measured using the CEMS during the source test
NR 463.25(3)(e)3.
3. For 2 or more exhaust streams from one or more automated conveyor and pallet cooling lines or automated shakeout lines, compute the flow-weighted average concentration of VOHAP emissions for each combination of exhaust streams using Equation 3:
where:
CW is the flow-weighted concentration of VOHAP or VOC, ppmv, as hexane
Ci is the concentration of VOHAP or VOC from exhaust stream i, ppmv, as hexane
n is the number of exhaust streams sampled
Qi is the volumetric flow rate of effluent gas from exhaust stream i in dscfm
NR 463.25(3)(f)
(f)
Triethylamine emissions. To determine compliance with the emissions limit or standard in
s. NR 463.23 (1) (a) 11. for a TEA cold box mold or core making line, you shall use the following test methods and procedures:
NR 463.25(3)(f)1.a.
a. Method 1 or 1A to select sampling port locations and the number of traverse points in each stack or duct. If you elect to meet the 99% reduction standard, sampling sites shall be located both at the inlet to the control device and at the outlet of the control device prior to any releases to the atmosphere. If you elect to meet the concentration limit, the sampling site shall be located at the outlet of the control device, or at the outlet of the emissions source if no control device is present, prior to any releases to the atmosphere.
NR 463.25(3)(f)1.b.
b. Method 2, 2A, 2C, 2D, 2F or 2G to determine the volumetric flow rate of the stack gas.
NR 463.25(3)(f)1.c.
c. Method 3, 3A or 3B to determine the dry molecular weight of the stack gas.
NR 463.25(3)(f)1.e.
e. Method 18 to determine the TEA concentration. The Method 18 sampling time shall be sufficiently long such that either the TEA concentration in the field sample is at least 5 times the limit of detection for the analytical method or the test results calculated using the laboratory's reported analytical detection limit for the specific field samples are less than 1/5 of the applicable emissions limit. The adsorbent tube approach, as described in Method 18, may be required to achieve the necessary analytical detection limits. The sampling time shall be at least one hour in all cases.
NR 463.25(3)(f)2.
2. Conduct the test as soon as practicable after adding fresh acid solution and the system has reached normal operating conditions.
NR 463.25(3)(f)3.
3. If you use a wet acid scrubber that is subject to the operating limit in
s. NR 463.23 (1) (b) 5. b. for pH level, determine the pH of the scrubber blowdown using one of the following procedures:
NR 463.25(3)(f)3.a.
a. Measure the pH of the scrubber blowdown with the CPMS required in
s. NR 463.26 (1) (f) 2. during each TEA sampling run in intervals of no more than 15 minutes. Determine and record the 3-hour average.
NR 463.25(3)(f)3.b.
b. Measure and record the pH level using the probe and meter required in
s. NR 463.26 (1) (f) 2. once each sampling run. Determine and record the average pH level for the 3 runs.
NR 463.25(3)(f)4.
4. If you are subject to the 99% reduction standard, calculate the mass emissions reduction using Equation 4:
where
Ei is the mass emissions rate of TEA at control device inlet, kg/hr
Eo is the mass emissions rate of TEA at control device outlet, kg/hr
NR 463.25(3)(g)
(g)
Combined emission sources. To determine compliance with the PM or total metal HAP emission limits in
s. NR 463.23 (1) (a) 1. to
6. when one or more regulated emissions sources are combined with either another regulated emissions source subject to a different emissions limit or other non-regulated emissions sources, you may demonstrate compliance using one of the following procedures:
NR 463.25(3)(g)1.
1. You shall meet the most stringent applicable emission limit for the regulated emission sources included in the combined emissions stream for the combined emissions stream.
NR 463.25(3)(g)2.a.
a. Determine the volumetric flow rate of the individual regulated streams for which emissions limits apply.
NR 463.25(3)(g)2.b.
b. Calculate the flow-weighted average emissions limit, considering only the regulated streams, using Equation 3 in
par. (e) 3., except C
w is the flow-weighted average emissions limit for PM or total metal HAP in the exhaust stream, gr/dscf; and C
i is the concentration of PM or total metal HAP in exhaust stream i, gr/dscf.
NR 463.25(3)(g)2.c.
c. Meet the calculated flow-weighted average emissions limit for the regulated emissions sources included in the combined emissions stream for the combined emissions stream.
NR 463.25(3)(g)3.a.
a. Determine the PM or total metal HAP concentration of each of the regulated streams prior to the combination with other exhaust streams or control device.
NR 463.25(3)(g)3.b.
b. Measure the flow rate and PM or total metal HAP concentration of the combined exhaust stream both before and after the control device and calculate the mass removal efficiency of the control device using Equation 4 in
par. (f) 4., except E
i is the mass emissions rate of PM or total metal HAP at the control device inlet, lb/hr, and E
o is the mass emissions rate of PM or total metal HAP at the control device outlet, lb/hr.
NR 463.25(3)(g)3.c.
c. Meet the applicable emissions limit based on the calculated PM or total metal HAP concentration for the regulated emissions source using Equation 5 of this section:
where
Creleased is the calculated concentration of PM or total metal HAP predicted to be released to the atmosphere from the regulated emission source, in gr/dscf
Ci is the concentration of PM or total metal HAP in the uncontrolled regulated exhaust stream, in gr/dscf
NR 463.25(4)
(4) What procedures must I use to establish operating limits? NR 463.25(4)(a)(a) For each capture system subject to operating limits in
s. NR 463.23 (1) (b) 1. b., you shall establish site-specific operating limits in your operation and maintenance plan according to all of the following procedures:
NR 463.25(4)(a)1.
1. Concurrent with applicable emissions and opacity tests, measure and record values for each of the operating limit parameters in your capture system operation and maintenance plan according to the monitoring requirements in
s. NR 463.26 (1) (a).
NR 463.25(4)(a)2.
2. For any dampers that are manually set and remain at the same position at all times the capture system is operating, visually check and record the damper position at the beginning and end of each run.
NR 463.25(4)(a)3.
3. Review and record the monitoring data. Identify and explain any times the capture system operated outside the applicable operating limits.
NR 463.25(4)(b)
(b) For each wet scrubber subject to the operating limits in
s. NR 463.23 (1) (b) 2. for pressure drop and scrubber water flow rate, you shall establish site-specific operating limits according to both of the following procedures:
NR 463.25(4)(b)1.
1. Using the CPMS required in
s. NR 463.26 (1) (c), measure and record the pressure drop and scrubber water flow rate in intervals of no more than 15 minutes during each PM test run.
NR 463.25(4)(b)2.
2. Compute and record the 3-hour average pressure drop and average scrubber water flow rate for each sampling run in which the applicable emissions limit is met.
NR 463.25(4)(c)
(c) For each combustion device applied to emissions from a scrap preheater or TEA cold box mold or core making line subject to the operating limit in
s. NR 463.23 (1) (b) 4. for combustion zone temperature, you shall establish a site-specific operating limit according to both of the following procedures:
NR 463.25(4)(c)1.
1. Using the CPMS required in
s. NR 463.26 (1) (e), measure and record the combustion zone temperature during each sampling run in intervals of no more than 15 minutes.
NR 463.25(4)(c)2.
2. Compute and record the 3-hour average combustion zone temperature for each sampling run in which the applicable emissions limit is met.
NR 463.25(4)(d)
(d) For each acid wet scrubber subject to the operating limit in
s. NR 463.23 (1) (b) 5., you shall establish a site-specific operating limit for scrubbing liquid flow rate according to both of the following procedures:
NR 463.25(4)(d)1.
1. Using the CPMS required in
s. NR 463.26 (1) (f), measure and record the scrubbing liquid flow rate during each TEA sampling run in intervals of no more than 15 minutes.
NR 463.25(4)(d)2.
2. Compute and record the 3-hour average scrubbing liquid flow rate for each sampling run in which the applicable emissions limit is met.
NR 463.25(4)(e)
(e) You may change the operating limits for a capture system, wet scrubber, acid wet scrubber or combustion device if you do all of the following:
NR 463.25(4)(e)1.
1. Submit a written notification to the department of your request to conduct a new performance test to revise the operating limit.
NR 463.25(4)(e)3.
3. Establish revised operating limits according to the applicable procedures in
pars. (a) to
(d).
NR 463.25(4)(f)
(f) You may use a previous performance test conducted since December 22, 2002 to establish an operating limit, provided the test meets the requirements of this subchapter.
NR 463.25(5)
(5) How do I demonstrate initial compliance with the emission limitations that apply to me? NR 463.25(5)(a)1.
1. For each electric arc metal melting furnace, electric induction metal melting furnace, or scrap preheater at an existing iron and steel foundry you demonstrate one of the following:
NR 463.25(5)(a)1.a.
a. The average PM concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (a), did not exceed 0.005 gr/dscf.
NR 463.25(5)(a)1.b.
b. The average total metal HAP concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (b), did not exceed 0.0004 gr/dscf.
NR 463.25(5)(a)2.
2. For each cupola metal melting furnace at an existing iron and steel foundry you demonstrate one of the following:
NR 463.25(5)(a)2.a.
a. The average PM concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (a), did not exceed 0.006 gr/dscf.
NR 463.25(5)(a)2.b.
b. The average total metal HAP concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (b), did not exceed 0.0005 gr/dscf.
NR 463.25(5)(a)3.
3. For each cupola metal melting furnace or electric arc metal melting furnace at a new iron and steel foundry you demonstrate one of the following:
NR 463.25(5)(a)3.a.
a. The average PM concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (a), did not exceed 0.002 gr/dscf.
NR 463.25(5)(a)3.b.
b. The average total metal HAP concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (b), did not exceed 0.0002 gr/dscf.
NR 463.25(5)(a)4.
4. For each electric induction metal melting furnace or scrap preheater at a new iron and steel foundry you demonstrate one of the following:
NR 463.25(5)(a)4.a.
a. The average PM concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (a), did not exceed 0.001 gr/dscf.
NR 463.25(5)(a)4.b.
b. The average total metal HAP concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (b), did not exceed 0.00008 gr/dscf.
NR 463.25(5)(a)5.
5. For each pouring station at an existing iron and steel foundry you demonstrate one of the following:
NR 463.25(5)(a)5.a.
a. The average PM concentration in the exhaust stream, measured according to the performance test procedures in
sub. (3) (a), did not exceed 0.010 gr/dscf.
NR 463.25(5)(a)5.b.
b. The average total metal HAP concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (b), did not exceed 0.0008 gr/dscf.
NR 463.25(5)(a)6.
6. For each pouring area or pouring station at a new iron and steel foundry you demonstrate one of the following:
NR 463.25(5)(a)6.a.
a. The average PM concentration in the exhaust stream, measured according to the performance test procedures in
sub. (3) (a), did not exceed 0.002 gr/dscf.
NR 463.25(5)(a)6.b.
b. The average total metal HAP concentration in the exhaust stream, determined according to the performance test procedures in
sub. (3) (b), did not exceed 0.0002 gr/dscf.
NR 463.25(5)(a)7.
7. For each building or structure housing any emission source at the iron and steel foundry, the opacity of fugitive emissions discharged to the atmosphere, determined according to the performance test procedures in
sub. (3) (c), did not exceed 20% averaged over 6-minutes, except for one 6-minute average per hour that did not exceed 27% opacity.
NR 463.25(5)(a)8.
8. For each cupola metal melting furnace at a new or existing iron and steel foundry, the average VOHAP concentration, determined according to the performance test procedures in
sub. (3) (d), did not exceed 20 ppmv corrected to 10% oxygen.
NR 463.25(5)(a)9.
9. For each scrap preheater at an existing iron and steel foundry that does not meet the work practice standards in
s. NR 463.23 (2) (e) 1. or
2., and for each scrap preheater at a new iron and steel foundry that does not meet the work practice standard in
s. NR 463.23 (2) (f), the average VOHAP concentration determined according to the performance test procedures in
sub. (3) (d), did not exceed 20 ppmv.
NR 463.25(5)(a)10.
10. For one or more automated conveyor and pallet cooling lines that use a sand mold system or automated shakeout lines that use a sand mold system at a new foundry you demonstrate both of the following:
NR 463.25(5)(a)10.a.
a. You have reduced the data from the CEMS to 3-hour averages according to the performance test procedures in
sub. (3) (e).
NR 463.25(5)(a)10.b.
b. The 3-hour flow-weighted average VOHAP concentration, measured according to the performance test procedures in
sub. (3) (e), did not exceed 20 ppmv.
NR 463.25(5)(a)11.
11. For each TEA cold box mold or core making line in a new or existing iron and steel foundry, the average TEA concentration, determined according to the performance test procedures in
sub. (3) (f) did not exceed 1 ppmv or was reduced by 99%.
