Miscellaneous metal parts and products — part 2

Miscellaneous metal parts and products — part 2. (1) Applicability. Beginning on June 1, 2022, this section applies to all coating line application areas, conveyors, flashoff areas, drying areas, forced-air driers, and ovens of any industry categorized under the 2-digit major groups of 33 to 39 as described in the Standard Industrial Classification Manual, 1987, incorporated by reference under s. NR 484.05 (1) , that are involved in the surface coating of miscellaneous metal parts and products at a facility that meets all of the following criteria: (a) The facility is located in any of the following areas: 1. An area that is classified as a moderate, serious, severe, or extreme ozone nonattainment area. 2. Any area that meets all the following criteria: a. The area had been classified as a moderate, serious, severe, or extreme ozone nonattainment area for a National Ambient Air Quality Standard, as defined in s. NR 489.02 (21) , for ozone promulgated in or after 2008. b. The area was subsequently reclassified as a marginal ozone nonattainment area or redesignated to an attainment area for ozone. (b) The facility has actual VOC emissions, before consideration of controls, from all miscellaneous metal parts and products coating operations, plastic parts coating operations, and related cleaning activities equal to or greater than 2.7 tons per year based on any consecutive 12-month period. (2) Definitions. Notwithstanding the definitions contained in s. NR 422.02 , the following definitions apply in this section: (a) 1. “Extreme performance coating” means a coating used on a metal or plastic surface where the coated surface is, in its intended use, subject to any of the following: a. Chronic exposure to corrosive, caustic or acidic agents, chemicals, chemical fumes, or chemical mixtures or solutions. b. Repeated exposure to temperatures in excess of 250 ° F. c. Repeated heavy abrasion, including mechanical wear and repeated scrubbing with industrial grade solvents, cleansers, or scouring agents. 2. “Extreme performance coating” includes coatings applied to locomotives, railroad cars, farm machinery, and heavy-duty trucks. (b) “Pretreatment coat” means a coating that contains no more than 12 percent solids by weight, and at least 0.50 percent acid, by weight, as measured according to ASTM D1613-02, incorporated by reference under s. NR 484.10 (25m) , that is used to provide surface etching, and that is applied to provide corrosion resistance, adhesion, and ease of stripping. (c) “Pretreatment wash primer” means a coating that contains no more than 12 percent solids, by weight, and at least 0.50 percent acid, by weight, as measured according to ASTM D1613-02, incorporated by reference under s. NR 484.10 (25m) , and that is used to provide surface etching, corrosion resistance, and adhesion of subsequent coatings. (d) “Stencil coating” means an ink or a pigmented coating that is rolled or brushed onto a template or stamp in order to add identifying letters, symbols, or numbers. (e) “Texture coating” means a coating applied to a plastic part that, in its finished form, consists of discrete raised spots of the coating. (3) Exemptions. (a) The following activities, materials, and coating lines are exempt from this section: 1. Aerospace coatings. 2. Shipbuilding and repair coatings. 3. Coatings for fiberglass boat manufacturing. 4. Aerosol coating operations. 5. Coatings that are applied to test panels and coupons as part of research and development, quality control, or performance testing activities at paint research or manufacturing facilities. 6. Coating lines covered under ss. NR 422.05 to 422.12 . 7. Use of adhesives regulated under s. NR 422.127 or 422.128 . (b) Metal coating operations using the following types of coatings are exempt from the VOC content limitations specified under sub. (4) and the application methods specified under sub. (5) : 1. Stencil coatings. 2. Safety-indicating coatings. 3. Solid-film lubricants. 4. Electric-insulating and thermal-conducting coatings. 5. Magnetic data storage disk coatings. 6. Plastic extruded onto metal parts to form a coating. (c) Metal coating operations using the following types of coatings are exempt from the application methods specified under sub. (5) : 1. Touch-up coatings. 2. Repair coatings. 3. Texture coatings. (4) Emission limits. (a) Except as specified under par. (b) , the owner or operator of a metal parts coating operation located at an affected facility under this section shall use the low-VOC coatings that meet the VOC content limits in Table 6 for the affected metal coating operations. If more than one VOC content limit applies to a specific coating, the most stringent VOC content limit shall be applied. (b) If the low-VOC coatings that meet the VOC content limits required under par. (a) are not used at an affected facility, the owner or operator shall use add-on control equipment that achieves a minimum overall emission reduction efficiency of 90 percent for VOC. (5) Application methods. An owner or operator of an affected facility under this section, except for a facility that uses add-on control equipment as described under sub. (4) (b) , shall use one or a combination of the following application methods for the affected coating operations: (a) Electrostatic application. (b) High-volume, low-pressure spray equipment. (c) Flow coating. (d) Roll coating. (e) Dip coating, including electrodeposition. (f) Airless spray. (g) Air-assisted airless spray. (h) Other coating application methods that are capable of achieving a transfer efficiency equivalent or better than achieved by high-volume, low-pressure spraying and are approved by the department. (6) Add-on control equipment requirements. An owner or operator that uses add-on control equipment as described under sub. (4) (b) shall comply with the applicable monitoring, testing, and recordkeeping requirements under ss. NR 439.04 (5) (e) , 439.055 , and 439.075 . (7) Work practices for coating-related activities. The owner or operator of an affected facility under this section shall do all of the following for coating-related activities: (a) Store all VOC-containing coatings, thinners, and coating-related waste materials in closed containers. (b) Ensure that mixing and storage containers used for VOC-containing coatings, thinners, and coating-related waste materials are kept closed at all times, except when depositing or removing those materials.