Chapter NR 422

NR 422.145(2) (2) Emission limitations.

NR 422.145(2)(a) (a) General. No owner or operator of a screen printing unit may cause, allow or permit the emission of any VOCs in excess of 0.40 kilograms per liter (3.3 pounds per gallon) of ink or coating, excluding water, delivered to an applicator, except as provided in pars. (b) and (c).

NR 422.145(2)(b) (b) Special purpose inks and coatings. No owner or operator of a screen printing unit using a special purpose ink or coating may cause, allow or permit the emission of any VOCs in excess of 0.80 kilograms per liter (6.7 pounds per gallon) of special purpose ink or coating, excluding water, delivered to an applicator.

NR 422.145(2)(c) (c) Roll coating. No owner or operator of a screen printing unit may cause, allow or permit the emission of any VOCs in excess of 0.80 kilograms per liter (6.7 pounds per gallon), excluding water, delivered to a roll coating applicator associated with screen printing.

NR 422.145(2m) (2m) Industrial cleaning operations.

NR 422.145(2m)(a) (a) Solvent and solvent solution requirements. Except as provided under par. (d), no owner or operator of a facility may cause, allow or permit the use of a solvent or solvent solution for industrial cleaning operations unless the VOC content of the solvent or solvent solution is less than or equal to the applicable VOC content listed in Table 5 for the respective cleaning operation. For the purposes of this subsection, VOC content shall be defined as in s. NR 423.02 (11r).

NR 422.145(2m)(b) (b) Cleaning devices and methods requirements. Except as provided under par. (d), the owner or operator of a facility shall comply with the following requirements associated with the identified cleaning devices or methods when using solvents or solvent solutions:

NR 422.145(2m)(b)1. 1. Physically rub a surface with a porous applicator such as a rag, paper, sponge, or a cotton swab moistened with solvent or solvent solution.

NR 422.145(2m)(b)2. 2. Closed containers or hand held spray bottles from which solvents or solvent solutions are applied without a propellant-induced force.

NR 422.145(2m)(b)3. 3. Cleaning equipment which has a solvent or solvent solution container that is closed during cleaning operations, except when depositing and removing objects to be cleaned, and is closed during non-operation with the exception of maintenance and repair to the cleaning equipment itself.

NR 422.145(2m)(b)4. 4. A remote reservoir cleaner operated in compliance with all of the following requirements:

NR 422.145(2m)(b)4.a. a. Solvent vapors are prevented from escaping from the solvent or solvent solution container by using devices such as a cover or a valve when the remote reservoir is not being used, cleaned, or repaired.

NR 422.145(2m)(b)4.b. b. Flow is directed in a manner that prevents solvent or solvent solution from splashing outside of the remote reservoir cleaner.

NR 422.145(2m)(b)4.c. c. The cleaner is not used for cleaning porous or absorbent materials, such as cloth, leather, wood, or rope.

NR 422.145(2m)(b)4.d. d. Only solvent or solvent solution containers free of all liquid leaks are used. Auxiliary equipment, such as pumps, pipelines, or flanges, may not have any liquid leaks, visible tears, or cracks. Any liquid leak, visible tear, or crack detected shall be repaired within one calendar day, or the leaking section of the remote reservoir cleaner shall be drained of all solvents or solvent solutions and shut down until it is replaced or repaired.

NR 422.145(2m)(b)5. 5. A non-atomized flow method where the used solvents or solvent solutions are collected in a container or a collection system which is closed, except for the solvent or solvent solution collection openings that may be open when filling or emptying, or the opening caused by use of a pressure relief valve.

NR 422.145(2m)(b)6. 6. A flushing method where the used solvents or solvent solutions are discharged into a container which is closed, except for the solvent or solvent solution collection openings that may be open when filling or emptying, or the opening caused by use of a pressure relief valve. The discharged solvents or solvent solutions shall be collected into containers without atomizing into the open air.

NR 422.145(2m)(c) (c) Storage and disposal. The owner or operator of a facility shall store all solvents or solvent solutions used in industrial cleaning operations in non-absorbent, non-leaking containers which shall be kept covered except when filling or emptying. Cloth and paper moistened with solvents or solvent solutions shall be stored in covered, non-absorbent, non-leaking containers.

NR 422.145(2m)(d) (d) Control equipment. In lieu of complying with the requirements in pars. (a) and (b), the owner or operator of a facility may use a VOC emission control system to control VOC emissions from the industrial cleaning operations at the facility provided one of the following requirements is met:

NR 422.145(2m)(d)1. 1. The emission control system has a minimum overall emission reduction efficiency of 85% for VOC emissions, as determined in accordance with s. NR 439.06 (3) (am).

NR 422.145(2m)(d)2. 2. The emission control system has a minimum VOC capture efficiency of 90% and an output of VOC emissions of less than 50 ppm calculated as carbon, not including methane and ethane, with no dilution, as determined in accordance with s. NR 439.06 (3) (a).

NR 422.145(2m)(e) (e) General prohibitions. The owner or operator of a facility may not atomize any solvent or solvent solution unless the resulting VOC emissions are controlled by an air pollution control system that meets one of the requirements of par. (d).

NR 422.145(2m)(f) (f) Alternative compliance option. In lieu of complying with the requirements in par. (a), the owner or operator of a facility may use solvents or solvent solutions for industrial cleaning operations which have a VOC composite partial vapor pressure of less than or equal to 8 mm of Hg at 20°C.

NR 422.145(3) (3) Compliance deadline. The owner or operator of a screen printing unit subject to this section on which construction or modification commenced before July 1, 1994 shall achieve final compliance with the emission limitations of sub. (2) not later than May 31, 1995. Any source which is subject to this section and on which construction or modification commenced on or after July 1, 1994 shall meet the emission limitations of sub. (2) upon startup.

NR 422.145(4) (4) Recordkeeping. In addition to the applicable recordkeeping requirements in s. NR 439.04, the owner or operator of any screen printing facility shall collect and record the applicable information specified in this subsection. The information shall be maintained at the facility for a minimum of 5 years and shall be made available to a department representative at any time during normal working hours. The information required is:

NR 422.145(4)(a) (a) For each operation that is exempt under sub. (1m) (c), the daily quantity in fluid ounces of VOC-containing aerosol product used for industrial cleaning operations.

NR 422.145(4)(b) (b) For each operation that is subject to sub. (2m), the following information as appropriate:

NR 422.145(4)(b)1. 1. The name and identification of each cleaning material and the associated solvent cleaning activity.

NR 422.145(4)(b)2. 2. The VOC content of each cleaning material, in pounds per gallon of material, as employed or the VOC composite partial vapor pressure of the solvents or solvent solutions used in industrial cleaning operations.

NR 422.145(4)(b)3. 3. For any operation subject to sub. (2m) (d), the results of any testing conducted as required under sub. (2m) (d).

NR 422.145 History History: Cr. Register, June, 1994, No. 462, eff. 7-1-94; CR 11-005: renum. (1) to be (1) (a) (intro.) and am., cr. (1) (a) 1., 2., (b), (1m), (2m), r. (2) (d), r. and recr. (4) Register January 2012 No. 673, eff. 2-1-12; correction made in (1) (a) (intro.), (b) made under s. 13.92 (4) (b) 7. Register January 2012 No. 673; CR 20-088: am. (1m) (intro.) Register May 2022 No. 797, eff. 6-1-22.

NR 422.15 NR 422.15 Miscellaneous metal parts and products — part 1.

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.