NR 440.54(5)(b)2.2. Method 5 shall be used to determine the particulate matter concentration

and volumetric flow rate (Qsd) of the effluent gas. The sampling time and sample volume for each run shall be at least 60 minutes and 0.85 dscm (30 dscf).

NR 440.54(5)(b)3.3. The device of sub. (4) (d) shall be used to determine the phosphate rock feed rate (P) for each run.

NR 440.54(5)(c)(c) To comply with sub. (4) (f), if applicable, the owner or operator shall use the monitoring devices in sub. (4) (c) 1. and 2. to determine the average pressure loss of the gas stream through the scrubber and the average scrubbing supply pressure during the particulate matter runs.

NR 440.54 HistoryHistory: Cr. Register, January, 1984, No. 337, eff. 2-1-84; am. (2) (intro.) and (3) (a) 1. a., Register, September, 1990, No. 417, eff. 10-1-90; r. and recr. (5), Register, July, 1993, No. 451, eff. 8-1-93; CR 06-109: am. (4) (f) Register May 2008 No. 629, eff. 6-1-08.

NR 440.55(1)(1) Applicability and designation of affected facility.

NR 440.55(1)(a)(a) The affected facility to which the provisions of this section apply is each ammonium sulfate dryer within an ammonium sulfate manufacturing plant in the caprolactam by-product, synthetic and coke oven by-product sectors of the ammonium sulfate industry.

NR 440.55(1)(b)(b) Any facility under par. (a) that commences construction or modification after February 4, 1980, is subject to the requirements of this section.

NR 440.55(2)(2) Definitions. As used in this section, terms not defined in this subsection have the meanings given in s. NR 440.02.

NR 440.55(2)(a)(a) “Ammonium sulfate dryer” means a unit or vessel into which ammonium sulfate is charged for the purpose of reducing the moisture content of the product using a heated gas stream. The unit includes foundations, super-structure, material charger systems, exhaust systems and integral control systems and instrumentation.

NR 440.55(2)(b)(b) “Ammonium sulfate feed material streams” means the sulfuric acid feed stream to the reactor/crystallizer for synthetic and coke oven by-product ammonium sulfate manufacturing plants; and means the total or combined feed streams (the oximation ammonium sulfate stream and the rearrangement reaction ammonium sulfate stream) to the crystallizer stage, prior to any recycle streams.

NR 440.55(2)(d)(d) “Caprolactam by-product ammonium sulfate manufacturing plant” means any plant which produces ammonium sulfate as a by-product from process streams generated during caprolactam manufacture.

NR 440.55(2)(e)(e) “Coke oven by-product ammonium sulfate manufacturing plant” means any plant which produces ammonium sulfate by reacting sulfuric acid with ammonia recovered as a by-product from the manufacture of coke.

NR 440.55(2)(f)(f) “Synthetic ammonium sulfate manufacturing plant” means any plant which produces ammonium sulfate by direct combination of ammonia and sulfuric acid.

NR 440.55(3)(3) Standards for particulate matter. On or after the date on which the performance test required to be conducted by s. NR 440.08 is completed, no owner or operator of an ammonium sulfate dryer subject to the provisions of this section may cause to be discharged into the atmosphere, from any ammonium sulfate dryer, particulate matter at an emission rate exceeding 0.15 kilogram of particulate per megagram of ammonium sulfate produced (0.30 pound of particulate per ton of ammonium sulfate produced) and exhaust gases with greater than 15% opacity.

NR 440.55(4)(4) Monitoring of operations.

NR 440.55(4)(a)(a) The owner or operator of any ammonium sulfate manufacturing plant subject to the provisions of this section shall install, calibrate, maintain and operate flow monitoring device which can be used to determine the mass flow of ammonium sulfate feed material streams to the process. The flow monitoring device shall have an accuracy of ±5% over its range. However, if the plant uses weight scales of the same accuracy to directly measure production rate of ammonium sulfate, the use of flow monitoring devices is not required.

NR 440.55(4)(b)(b) The owner or operator of any ammonium sulfate manufacturing plant subject to the provisions of this section shall install, calibrate, maintain and operate a monitoring device which continuously measures and permanently records the total pressure drop across the emission control system. The monitoring device shall have an accuracy of ± 5% over its operating range.

NR 440.55(5)(5) Test methods and procedures.

NR 440.55(5)(a)(a) In conducting the performance tests required in s. NR 440.08, the owner or operator shall use as reference methods and procedures the test methods in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 440.17, or other methods and procedures as specified in s. NR 440.08 (2).

NR 440.55(5)(b)(b) The owner or operator shall determine compliance with the particulate matter standards in sub. (3) as follows:

NR 440.55(5)(b)1.1. The emission rate (E) of particulate matter shall be computed for each run using the following equation: