NR 463.23(3)(b)6.6. Procedures for providing an ignition source to mold vents of sand mold systems in each pouring area and pouring station unless you determine the mold vent gases either are not ignitable, ignite automatically or cannot be ignited due to accessibility or safety issues. You shall document and maintain records of the determination of ignitability, accessibility and safety. The determination may encompass multiple casting patterns provided the castings utilize similar sand-to-metal ratios, binder formulations and coating materials. The determination of ignitability shall be based on observations of the mold vents within 5 minutes of pouring, and the flame shall be present for at least 15 seconds for the mold vent to be considered ignited. For the purpose of the determination made under this subdivision, both of the following apply:

NR 463.23(3)(b)6.b.b. Mold vents that do not ignite automatically and cannot be ignited in the presence of an auxiliary ignition source more than 25% of the time are considered to be not ignitable.

NR 463.24(1)(a)(a) You shall be in compliance with the emissions limitations, work practice standards and operation and maintenance requirements in this subchapter at all times, except during periods of startup, shutdown or malfunction.

NR 463.24(1)(b)(b) During the period between the compliance date specified for your iron and steel foundry in s. NR 463.21 (4) and the date when applicable operating limits have been established during the initial performance test, you shall maintain a log detailing the operation and maintenance of the process and emissions control equipment.

NR 463.24(1)(c)(c) You shall develop a written startup, shutdown and malfunction plan according to the provisions in s. NR 460.05 (4) (c). The startup, shutdown and malfunction plan shall also specify what constitutes a shutdown of a cupola and how to determine that operating conditions are normal following startup of a cupola.

NR 463.24(2)(2) What parts of the general provisions apply to me? You shall comply with the applicable general provisions requirements in ch. NR 460. Chapter NR 460 Appendix EEEEE shows which parts of the general provisions in ch. NR 460 apply to you.

NR 463.25(1)(a)(a) As required by s. NR 460.06 (1) (b), you shall conduct a performance test no later than 180 calendar days after the compliance date that is specified in s. NR 463.21 (4) for your iron and steel foundry to demonstrate initial compliance with each emission limitation in s. NR 463.23 (1) that applies to you.

NR 463.25(1)(b)(b) For each work practice standard in s. NR 463.23 (2) and each operation and maintenance requirement in s. NR 463.23 (3) that applies to you where initial compliance is not demonstrated using a performance test, you shall demonstrate initial compliance no later than 30 calendar days after the compliance date that is specified for your iron and steel foundry in s. NR 463.21 (4).

NR 463.25(1)(c)(c) If you commenced construction or reconstruction between December 23, 2002 and April 22, 2004, you shall demonstrate initial compliance with either the proposed emissions limit or the promulgated emissions limit no later than October 19, 2004 or no later than 180 calendar days after startup of the source, whichever is later, according to s. NR 460.06 (1) (c).

NR 463.25(1)(d)(d) If you commenced construction or reconstruction between December 23, 2002 and April 22, 2004, and you chose to comply with the proposed emissions limit when demonstrating initial compliance, you shall conduct a second performance test to demonstrate compliance with the promulgated emissions limit by October 19, 2007 or after startup of the source, whichever is later, according to s. NR 460.06 (1) (c).

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)1.1. Determine the concentration of PM according to the test methods in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (13), that are specified in subd. 1. a. to e.:

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.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.