NR 463.25(2)(2) When must I conduct subsequent performance tests? NR 463.25(2)(a)(a) You shall conduct subsequent performance tests to demonstrate compliance with all applicable PM or total metal HAP, VOHAP and TEA emissions limitations in s. NR 463.23 (1) for your iron and steel foundry no less frequently than every 5 years. The requirement to conduct performance tests every 5 years does not apply to an emissions source for which a continuous emissions monitoring system (CEMS) is used to demonstrate continuous compliance. NR 463.25(2)(b)(b) You shall conduct subsequent performance tests to demonstrate compliance with the opacity limit in s. NR 463.23 (1) (a) 7. for your iron and steel foundry no less frequently than once every 6 months. NR 463.25(3)(3) What test methods and other procedures must I use to demonstrate initial compliance with the emission limitations? You shall conduct each performance test that applies to your iron and steel foundry according to the requirements in s. NR 460.06 (4) (a) and the following conditions, as applicable: NR 463.25(3)(a)(a) Particulate matter. To determine compliance with the applicable emission limit for PM in s. NR 463.23 (1) (a) 1. to 6. for a metal melting furnace, scrap preheater, pouring station or pouring area, you shall use the following test methods and procedures: NR 463.25(3)(a)1.a.a. Method 1 or 1A to select sampling port locations and the number of traverse points in each stack or duct. Sampling sites shall be located at the outlet of the control device, or at the outlet of the emission source if no control device is present, prior to any releases to the atmosphere. NR 463.25(3)(a)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)(a)1.c.c. Method 3, 3A or 3B to determine the dry molecular weight of the stack gas. NR 463.25(3)(a)1.e.e. Method 5, 5B, 5D, 5F or 5I, as applicable, to determine the PM concentration. The PM concentration is determined using only the front-half, probe rinse and filter, of the PM catch. NR 463.25(3)(a)2.2. Collect a minimum sample volume of 60 dscf of gas during each PM sampling run. A minimum of 3 valid test runs are needed to comprise a performance test. NR 463.25(3)(a)3.3. For cupola metal melting furnaces, sample only during times when the cupola is on blast. NR 463.25(3)(a)4.4. For electric arc and electric induction metal melting furnaces, sample only when metal is being melted. NR 463.25(3)(b)(b) Total metal HAP. To determine compliance with the applicable emission limit for total metal HAP in s. NR 463.23 (1) (a) 1. to 6. for a metal melting furnace, scrap preheater, pouring station, or pouring area, you shall use the following test methods and procedures: NR 463.25(3)(b)1.a.a. Method 1 or 1A to select sampling port locations and the number of traverse points in each stack or duct. Sampling sites 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)(b)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)(b)1.c.c. Method 3, 3A or 3B to determine the dry molecular weight of the stack gas. NR 463.25(3)(b)2.2. Collect a minimum sample volume of 60 dscf of gas during each total metal HAP sampling run. A minimum of 3 valid test runs are needed to comprise a performance test. NR 463.25(3)(b)3.3. For cupola metal melting furnaces, sample only during times when the cupola is on blast. NR 463.25(3)(b)4.4. For electric arc and electric induction metal melting furnaces, sample only when metal is being melted. NR 463.25(3)(c)(c) Fugitive emissions. To determine compliance with the opacity limit in s. NR 463.23 (1) (a) 7. for fugitive emissions from buildings or structures housing any emissions source at the iron and steel foundry, you shall use the following test method and procedures: NR 463.25(3)(c)2.2. Conduct each test such that the opacity observations overlap with the PM performance tests.