Wisconsin Administrative Code
Department of Natural Resources
NR 400-499 - Environmental Protection - Air Pollution Control
Chapter NR 465 - National emission standards for hazardous air pollutants for general surface coating processes
Subchapter III - Surface Coating of Large Appliances
Section NR 465.23 - Emission limitations

Universal Citation: WI Admin Code § NR 465.23

Current through August 26, 2024

(1) WHAT EMISSION LIMITS MUST I MEET?.

(a) For an existing affected source, you shall limit organic HAP emissions to the atmosphere to no more than 0.13 kg/liter (1.1 lb/gal) of coating solids used during each compliance period.

(b) For a new or reconstructed affected source, you shall limit organic HAP emissions to the atmosphere to no more than 0.022 kg/liter (0.18 lb/gal) of coating solids used during each compliance period.

(2) WHAT ARE MY OPTIONS FOR MEETING THE EMISSION LIMITS?. You shall include all coatings, thinners and cleaning materials used in the affected source when determining whether the organic HAP emission rate is equal to or less than the applicable emission limit in sub. (1). To make this determination, you shall use at least one of the 3 compliance options listed in pars. (a) to (c). You may apply any of the compliance options to an individual coating operation or to multiple coating operations as a group or to the entire affected source. You may use different compliance options for different coating operations or at different times on the same coating operation. However, you may not use different compliance options at the same time on the same coating operation. If you switch between compliance options for any coating operation or group of coating operations, you shall document this switch as required by s. NR 465.25(3) (c), and you shall report it in the next semiannual compliance report required in s. NR 465.25(2). The compliance options and requirements are as follows:

(a) Compliant material option. Demonstrate that the organic HAP content of each coating used in the coating operation or operations is less than or equal to the applicable emission limit in sub. (1), and that each thinner and each cleaning material used contains no organic HAP. You shall meet all the requirements of s. NR 465.26(1) to (3) to demonstrate compliance with the emission limit using this option.

(b) Emission rate without add-on controls option. Demonstrate that, based on data on the coatings, thinners and cleaning materials used in the coating operation or operations, the organic HAP emission rate for the coating operation or operations is less than or equal to the applicable emission limit in sub. (1). You shall meet all the requirements of s. NR 465.27(1) to (3) to demonstrate compliance with the emission limit using this option.

(c) Emission rate with add-on controls option. Demonstrate that, based on data on the coatings, thinners and cleaning materials used in the coating operation or operations and the emission reductions achieved by emission capture and add-on controls, the organic HAP emission rate for the coating operation or operations is less than or equal to the applicable emission limit in sub. (1). If you use this compliance option, you shall also demonstrate that all emission capture systems and add-on control devices for the coating operation or operations meet the operating limits required in sub. (3), except for solvent recovery systems for which you conduct liquid-liquid material balances according to s. NR 465.28(2) (g), and that you meet the work practice standards required in sub. (4). You shall meet all the requirements of s. NR 465.28(1) to (9) to demonstrate compliance with the emission limits, operating limits, and work practice standards using this option.

(3) WHAT OPERATING LIMITS MUST I MEET?.

(a) For any coating operation on which you use the compliant material option or the emission rate without add-on controls option, you are not required to meet any operating limits.

(b) For any controlled coating operation or operations on which you use the emission rate with add-on controls option, except those for which you use a solvent recovery system and conduct a liquid-liquid material balance according to s. NR 465.28(2) (g), you shall meet the operating limits specified in Table 1 of this subchapter. These operating limits apply to the emission capture and control systems on the coating operation or operations for which you use this option, and you shall establish the operating limits during the performance test according to the requirements in s. NR 465.28(8). You shall meet the operating limits at all times after you establish them.

(c) If you use an add-on control device other than those listed in Table 1 of this subchapter, or wish to monitor an alternative parameter and comply with a different operating limit, you shall apply to the U.S. environmental protection agency (EPA) administrator for approval of alternative monitoring under s. NR 460.07(6).

(4) WHAT WORK PRACTICE STANDARDS MUST I MEET?.

(a) For any coating operation on which you use the compliant material option or the emission rate without add-on controls option, you are not required to meet any work practice standards.

(b) If you use the emission rate with add-on controls option, you shall develop and implement a work practice plan to minimize organic HAP emissions from the storage, mixing, and conveying of coatings, thinners, and cleaning materials used in, and waste materials generated by, the coating operation or operations for which you use this option; or you shall meet an alternative standard as provided in par. (c). The plan shall specify practices and procedures to ensure that, at a minimum, all of the following elements are implemented:

1. All organic-HAP-containing coatings, thinners, cleaning materials and waste materials shall be stored in closed containers.

2. Spills of organic-HAP-containing coatings, thinners, cleaning materials and waste materials shall be minimized.

3. Organic-HAP-containing coatings, thinners, cleaning materials and waste materials shall be conveyed from one location to another in closed containers or pipes.

4. Mixing vessels which contain organic-HAP-containing coatings and other materials shall be closed except when you are adding to, removing or mixing the contents.

5. Emissions of organic HAP shall be minimized during cleaning of storage, mixing and conveying equipment.

(c) As provided in 40 CFR 63.6(g), the administrator may choose to grant you permission to use an alternative to the work practice standards in this subsection.

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