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)(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: