Chapter NR 422

NR 422.15(1) (1) Applicability.

NR 422.15(1)(ag) (ag) The requirements of this section do not apply to any facility with miscellaneous metal parts and products coating operations meeting the applicability requirements contained in s. NR 422.151 (1) beginning on June 1, 2022.

NR 422.15(1)(am) (am) Except as provided in par. (cm), subs. (2) to (8) apply 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 in s. NR 484.05 (1), which are involved in the surface coating of miscellaneous metal parts and products in the following counties and at the respective emission thresholds:

NR 422.15(1)(am)1. 1. Any facility located in the county of Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Washington, or Waukesha and which has VOC emissions, before consideration of controls, from all miscellaneous metal parts and products coating lines are greater than 6.8 kilograms (15 pounds) in any one day.

NR 422.15(1)(am)2. 2. Any facility located in the county of Brown, Calumet, Dane, Dodge, Door, Fond du Lac, Jefferson, Kewaunee, Manitowoc, Outagamie, Rock, Walworth, or Winnebago that has VOC emissions, before consideration of controls, from all miscellaneous metal parts and products coating lines, greater than or equal to 10 tons per year.

NR 422.15(1)(am)3. 3. Any facility located outside the counties of Brown, Calumet, Dane, Dodge, Door, Fond du Lac, Jefferson, Kenosha, Kewaunee, Manitowoc, Milwaukee, Outagamie, Ozaukee, Racine, Rock, Sheboygan, Walworth, Washington, Waukesha, and Winnebago and which has total emissions of VOC from the facility, before consideration of controls, of greater than or equal to 100 tons per year.

NR 422.15(1)(bm) (bm) Subsection (9) applies to any facility with coating operations as described in par. (am) which is located in the county of Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Washington, or Waukesha if VOC emissions from all coating operations, including related cleaning activities, before consideration of controls, equal or exceed 3 tons per year on a 12 consecutive month rolling basis.

NR 422.15(1)(cm) (cm) The following activities, materials, and coating lines are exempt from this section:

NR 422.15(1)(cm)1. 1. Coating of airplane exteriors.

NR 422.15(1)(cm)2. 2. Coating of marine vessels.

NR 422.15(1)(cm)3. 3. Automobile refinishing.

NR 422.15(1)(cm)4. 4. Customized topcoating of automobiles and trucks if production is less than 35 vehicles per day.

NR 422.15(1)(cm)5. 5. Adhesives and materials used to prepare a surface for adhesives at facilities located outside the counties of Door, Kenosha, Kewaunee, Manitowoc, Milwaukee, Ozaukee, Racine, Sheboygan, Walworth, Washington, and Waukesha.

NR 422.15(1)(cm)6. 6. Sealants or fillers whose purpose is to seal or fill seams, joints, holes and minor imperfections of surfaces, and which are applied at facilities located outside the counties of Door, Kenosha, Kewaunee, Manitowoc, Milwaukee, Ozaukee, Racine, Sheboygan, Walworth, Washington, and Waukesha.

NR 422.15(1)(cm)7. 7. Coating lines covered under ss. NR 422.05 to 422.12.

NR 422.15(1)(cm)8. 8. Coating operations subject to s. NR 422.155.

NR 422.15 Note Note: This section does not apply to the silk screening of metal parts and products. These operations are regulated under s. NR 422.145.

NR 422.15(2) (2) Emission limitations — cured coatings. No owner or operator of a miscellaneous metal parts or products coating line using a baked or specially cured coating technology may cause, allow or permit the emission of any VOCs in excess of:

NR 422.15(2)(a) (a) 0.52 kilograms per liter (4.3 pounds per gallon) of coating, excluding water, delivered to a coating applicator that applies clear coatings.

NR 422.15(2)(b) (b) 0.42 kilograms per liter (3.5 pounds per gallon) of coating, excluding water, delivered to a coating applicator that applies extreme performance coatings.

NR 422.15(2)(c) (c) 0.36 kilograms per liter (3.0 pounds per gallon) of coating, excluding water, delivered to a coating applicator for all other coatings.

NR 422.15(3) (3) Emission limitations — air dried coatings. No owner or operator of a miscellaneous metal parts or products coating line using an air dried coating technology may cause, allow or permit the emission of any VOCs in excess of:

NR 422.15(3)(b) (b) After December 31, 1985, 0.52 kilograms per liter (4.3 pounds per gallon) of coating, excluding water, delivered to a coating applicator that applies clear coatings.

NR 422.15(3)(c) (c) After December 31, 1985, 0.42 kilograms per liter (3.5 pounds per gallon) of coating, excluding water, delivered to a coating applicator for all other coatings.

NR 422.15(4) (4) Emission limitations — pretreatment coats. This subsection applies to miscellaneous metal parts and products coating lines which are located outside the counties of Door, Kenosha, Kewaunee, Manitowoc, Milwaukee, Ozaukee, Racine, Sheboygan, Walworth, Washington, and Waukesha. No owner or operator of a miscellaneous metal parts or products coating line may cause, allow or permit the emission of any VOCs in excess of 0.78 kilograms per liter (6.50 pounds per gallon) of coating, excluding water, delivered to a coating applicator that applies pretreatment coats. Coatings subject to this subsection may not participate in an internal offset under s. NR 425.05 or generate emission reduction credits in an emission reduction option.

NR 422.15(5) (5) Emission limitations and requirements — high performance architectural coatings. This subsection applies to miscellaneous metal parts and products coating lines which were involved in the application of high performance architectural coatings, prior to July 1, 1983, and are located outside the counties of Brown, Calumet, Dane, Dodge, Door, Fond du Lac, Jefferson, Kenosha, Kewaunee, Manitowoc, Milwaukee, Outagamie, Ozaukee, Racine, Rock, Sheboygan, Walworth, Washington, Waukesha, and Winnebago.

NR 422.15(5)(a) (a) No owner or operator of a miscellaneous metal parts or products coating line which applies a high performance architectural coating may cause, allow or permit the emission of any VOCs from the coating in excess of:

NR 422.15(5)(a)1. 1. 0.65 kilograms per liter (5.4 pounds per gallon) of coating, excluding water, delivered to a coating applicator that applies prime coatings.

NR 422.15(5)(a)2. 2. 0.70 kilograms per liter (5.8 pounds per gallon) of coating, excluding water, delivered to a coating applicator for all other coatings.

NR 422.15(5)(b) (b) The owner or operator of a miscellaneous metal parts and products coating line may demonstrate compliance with the emission limits of this subsection by demonstrating, on a daily basis, that the combined emission rate from all high performance architectural coatings is less than or equal to the allowable emission rate as determined by the equation in s. NR 425.05 (2) (b) 2.

NR 422.15(6) (6) Change in technology. Miscellaneous metal parts or products coating lines which, prior to January 1, 1980, used a baked or specially cured coating technology shall meet the emission limitations of sub. (2) notwithstanding the coating technology presently in use.

NR 422.15(7) (7) Multiple limitations. If more than one emission limitation in sub. (2) applies to a specific coating, then the least stringent emission limitation shall be applied.

NR 422.15(8) (8) Solvent washings. All VOC emissions from solvent washings shall be considered in the emission limitations in subs. (2) and (3), unless the used wash solvent is directed into containers that prevent evaporation into the atmosphere.

NR 422.15(9) (9) Work practices. Beginning on March 1, 2013, the owner or operator of a facility subject to this subsection shall do all of the following:

NR 422.15(9)(a) (a) Store all VOC-containing cleaning materials and shop towels used for cleaning in closed containers.

NR 422.15(9)(b) (b) Ensure that storage containers used for VOC-containing materials are kept closed at all times except when depositing or removing material.

NR 422.15(9)(c) (c) Convey VOC-containing cleaning materials in closed containers or pipes.

NR 422.15(9)(d) (d) Minimize spills of VOC-containing cleaning materials.

NR 422.15(9)(e) (e) Minimize emissions of VOC during cleaning of coating application, storage, mixing, and conveying equipment by ensuring that cleaning is performed without atomizing any VOC-containing cleaning material and that the used material is captured and contained.

NR 422.15(10) (10) Compliance schedule and certification.

NR 422.15(10)(a) (a) Compliance schedule. The owner or operator of a miscellaneous metal parts and products facility described under sub. (1) (am) and located in Kewaunee, Manitowoc, or Walworth county that commenced construction before June 1, 2022, shall comply with the applicable requirements of this section by November 28, 2022.

NR 422.15(10)(b) (b) Certification. No later than 60 days after the compliance deadline specified under par. (a), the owner or operator of a miscellaneous metal parts and products facility described in par. (a) shall submit to the department written certification that all affected miscellaneous metal parts and products coating operations are in compliance with the applicable requirements of this section. Any such facility that is required to have an operation permit under ch. NR 407 shall submit to the department a permit application or a permit revision or renewal application that meets the application requirements under s. NR 407.05 to meet this certification requirement, except that no application shall be required for a source operating under a general operation permit or a registration operation permit issued under s. NR 407.10 or 407.105.

NR 422.15 History History: Renum. from NR 154.13 (4) (m) and am. Register, September, 1986, No. 369, eff. 10-1-86; renum. (4) to (6) to be (5) to (7), cr. (4), Register, July, 1988, No. 391, eff. 8-1-88; am. (1) (h) and (i), cr. (1) (j), Register, April, 1989, No. 400 eff. 5-1-89; am. (1) (i) and (j), cr. (1) (k), Register, August, 1989, No. 404, eff. 9-1-89; am. (1) (b), (2) (intro.) and (3) (intro.), r. (1) (f), renum. (4) to (7) to be (5) to (8) and am. (5) (b), cr. (4), Register, February, 1990, No. 410, eff. 3-1-90; am. (1) (intro.), (e), (g) and (j), (4), (5) (intro.) and (b), Register, December, 1993, No. 456, eff. 1-1-94; am. (1) (intro.), Register, August, 1995, No. 476, eff. 9-1-95; r. (3) (a), Register, December, 1996, No. 492, eff. 1-1-97; r. (1) (j), Register, October, 1999, No. 526, eff. 11-1-99; CR 11-005: renum. (1) (intro.) to be (1) (am) (intro.) and am., cr. (1) (a) 1., 2., 3., (bm), (cm) (intro.), (9), renum. (1) (a) to (e), (g), (h), (k) to be (1) (cm) 1. to 8., r. (1) (i) Register January 2012 No. 673, eff. 2-1-12; CR 20-088: am. (title), cr. (1) (ag), am. (1) (am) 2., cr. (10) Register May 2022 No. 797, eff. 6-1-22; correction in (10) (a) made under s. 13.92 (4) (b) 14., Stats., Register May 2022 No. 797.

NR 422.151 NR 422.151 Miscellaneous metal parts and products — part 2.

NR 422.151(1) (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:

NR 422.151(1)(a) (a) The facility is located in any of the following areas:

NR 422.151(1)(a)1. 1. An area that is classified as a moderate, serious, severe, or extreme ozone nonattainment area.

NR 422.151(1)(a)2. 2. Any area that meets all the following criteria:

NR 422.151(1)(a)2.a. 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.

NR 422.151(1)(a)2.b. b. The area was subsequently reclassified as a marginal ozone nonattainment area or redesignated to an attainment area for ozone.

NR 422.151(1)(b) (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.

NR 422.151(2) (2) Definitions. Notwithstanding the definitions contained in s. NR 422.02, the following definitions apply in this section:

NR 422.151(2)(a) (a)

NR 422.151(2)(a)1. 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:

NR 422.151(2)(a)1.a. a. Chronic exposure to corrosive, caustic or acidic agents, chemicals, chemical fumes, or chemical mixtures or solutions.

NR 422.151(2)(a)1.b. b. Repeated exposure to temperatures in excess of 250°F.

NR 422.151(2)(a)1.c. c. Repeated heavy abrasion, including mechanical wear and repeated scrubbing with industrial grade solvents, cleansers, or scouring agents.

NR 422.151(2)(a)2. 2. “Extreme performance coating” includes coatings applied to locomotives, railroad cars, farm machinery, and heavy-duty trucks.

NR 422.151(2)(b) (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.

NR 422.151(2)(c) (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.

NR 422.151(2)(d) (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.

NR 422.151(2)(e) (e) “Texture coating” means a coating applied to a plastic part that, in its finished form, consists of discrete raised spots of the coating.

NR 422.151(3) (3) Exemptions.

NR 422.151(3)(a) (a) The following activities, materials, and coating lines are exempt from this section:

NR 422.151(3)(a)1. 1. Aerospace coatings.

NR 422.151(3)(a)2. 2. Shipbuilding and repair coatings.

NR 422.151(3)(a)3. 3. Coatings for fiberglass boat manufacturing.

NR 422.151(3)(a)4. 4. Aerosol coating operations.

NR 422.151(3)(a)5. 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.

NR 422.151(3)(a)6. 6. Coating lines covered under ss. NR 422.05 to 422.12.

NR 422.151(3)(a)7. 7. Use of adhesives regulated under s. NR 422.127 or 422.128.

NR 422.151(3)(b) (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):

NR 422.151(3)(b)1. 1. Stencil coatings.

NR 422.151(3)(b)2. 2. Safety-indicating coatings.

NR 422.151(3)(b)3. 3. Solid-film lubricants.

NR 422.151(3)(b)4. 4. Electric-insulating and thermal-conducting coatings.

NR 422.151(3)(b)5. 5. Magnetic data storage disk coatings.

NR 422.151(3)(b)6. 6. Plastic extruded onto metal parts to form a coating.

NR 422.151(3)(c) (c) Metal coating operations using the following types of coatings are exempt from the application methods specified under sub. (5):

NR 422.151(3)(c)1. 1. Touch-up coatings.

NR 422.151(3)(c)2. 2. Repair coatings.

NR 422.151(3)(c)3. 3. Texture coatings.

NR 422.151(4) (4) Emission limits.

NR 422.151(4)(a) (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.

Table 6

VOC Content Limitations for Coatings Used in Metal Parts and Products Coating – Low-VOC Coatings

[kilogram/liter (pounds/gallons) of coating, excluding water and exempt compounds listed in s. NR 400.02 (162) (a), as applied]

NR 422.151 Note Note: The VOC content limits for the coating and application types under Table 6 rows 1. a. to 2. y. apply to any coating that does not meet the definitions for the specific coatings listed under Table 6 rows 3. a. to 4. h.

NR 422.151(4)(b) (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.