NR 419.045(4)(d)1.1. Monitors shall be installed and maintained to measure operational parameters of any emission control device or other device installed to comply with sub. (2) or (3). Monitoring parameters shall be sufficient to demonstrate proper functioning of the devices to design specifications. Except as provided in subd. 2., the following monitoring and data recording shall be performed as applicable:

NR 419.045(4)(d)1.a.a. For an enclosed non-catalytic combustion device, continuously monitor and record the temperature of the gas stream either in the combustion chamber or immediately downstream before any substantial heat exchange.

NR 419.045(4)(d)1.b.b. For a catalytic incinerator, continuously monitor and record the temperature of the gas stream immediately before and after the catalyst bed.

NR 419.045(4)(d)1.d.d. For a carbon adsorber, continuously monitor and record the VOC concentration of exhaust gas stream to determine if breakthrough has occurred. If the carbon adsorber does not regenerate the carbon bed directly in the control device, that is, a carbon canister is used, the exhaust gas stream shall be monitored daily or at intervals no greater than 20% of the design replacement interval, whichever is greater. As an alternative to conducting daily monitoring, the carbon may be replaced with fresh carbon at a regular predetermined time interval that is less than the carbon replacement interval that is determined by the maximum design flow rate and the VOC concentration in the gas stream vented to the carbon adsorber.

NR 419.045(4)(d)1.f.f. For a steam stripper, continuously monitor and record the steam flow rate, the wastewater feed mass flow rate, and either the wastewater feed temperature, or the column operating temperature as measured in the column top tray liquid phase at the downcomer.

NR 419.045(4)(d)1.g.g. For vapor control systems other than those specified in subds. 1. a. to f., continuously monitor and record the appropriate operating parameters.

NR 419.045(4)(e)(e) For a closed-vent system that is used to comply with sub. (2) or (3), and that is designed to operate at a pressure below atmospheric pressure, the closed-vent system shall be equipped with at least one pressure gauge or other pressure measurement device that can be read from a readily accessible location to verify that negative pressure is being maintained in the closed-vent system when the control device is operating.

NR 419.045(5)(5) Approved test methods. Compliance with the emission specifications, vapor control system efficiency, and certain control requirements, inspection requirements, and exemption criteria of subs. (1) (b) and (2) to (4), relating to control requirements, alternate control requirements, inspection and monitoring requirements, and exemptions, shall be determined by applying one or more of the test methods and procedures, as appropriate, in this subsection. Minor modifications to test methods and procedures may be used, if approved by the department with written concurrence from EPA. Test methods other than those specified in this subsection may be used if validated by Method 301 in 40 CFR part 63, Appendix A, incorporated by reference in s. NR 484.04 (25). The test methods are:

NR 419.045(5)(a)(a) Methods 1, 2, 3 and 4, in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (13), for determining gas flow rates, as necessary.

NR 419.045(5)(b)(b) Methods 18, 25, 25A, or 25B in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (13), for determining organic compound emission concentrations or emission rates.

NR 419.045(5)(c)1.1. For control devices other than flares, the VOC control efficiency shall be determined in accordance with s. NR 439.07, where the flow rate and VOC concentration of the inlet and outlet gas streams of the control device are measured as specified under pars. (a) and (b).

NR 419.045(5)(c)2.2. For flares, the performance test requirements of 40 CFR 60.18 (b) shall apply. Compliance with the requirements of 40 CFR 60.18 (b) will be considered to represent 98% control of the VOC in the flare inlet.

NR 419.045(5)(d)(d) ASTM D323-08, D2879-10, D4953-06, D5190-07, or D5191-10b, adjusted for actual storage temperature in accordance with American Petroleum Institute publication 2517, incorporated by reference in s. NR 484.11 (5), for the measurement of vapor pressure. The ASTM methods are incorporated by reference in s. NR 484.10 (6), (39m), (55b), (55bg), and (55br), respectively.

NR 419.045(5)(e)(e) Method 21 in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (17), for monitoring a carbon canister in accordance with sub. (4) (d) 1. d.

NR 419.045(5)(f)(f) For determining the VOC concentration of wastewater samples, any of the methods in subds. 1. to 6., except that in the event of any conflicts, subd. 6. shall take precedence.

NR 419.045(5)(f)1.1. Method 5030B followed by Method 8015C with a DB-5 boiling point (or equivalent column), and flame ionization detector, with the detector calibrated with benzene as required by 40 CFR part 261. Methods 5030B and 8015C are published in EPA Publication SW-846 “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods”, incorporated by reference in s. NR 484.06 (4) (e).

NR 419.045(5)(f)2.2. Methods 5021A, 5030B followed by 8021B, 8260B, and 9060A as required by 40 CFR part 261, as published in EPA Publication SW-846 “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods”, incorporated by reference in s. NR 484.06 (4) (e).

NR 419.045(5)(f)5.5. Method 5310(B) in Standard Methods for the Examination of Water and Wastewater, 20th Edition, 1998, incorporated by reference in s. NR 484.11 (12).

NR 419.045(5)(f)6.6. Method 25D in 40 CFR part 60, Appendix A, incorporated by reference in s. NR 484.04 (20e). In the event of any conflict, Method 25D takes precedence.

NR 419.045(5)(g)(g) The measurement of wastewater flow rate shall be determined with flow measurement devices. Flow rate measurements shall be taken at the same time as the concentration measurements.