NR 421.05(2m)(a) (a) Except as provided in par. (b), the owner or operator of a facility subject to this subsection shall use any of the following methods when cleaning mixing vats, high dispersion mills, grinding mills, tote tanks, and roller mills:

NR 421.05(2m)(a)1. 1. Use a solvent or solvent solution that either contains less than 0.20 kilograms of VOC per liter (1.67 pounds per gallon) or has a VOC composite partial vapor pressure of less than or equal to 8 mm of Hg at 20ºC. The solvent or solvent solution shall be collected and stored in closed containers.

NR 421.05(2m)(a)2. 2. Implement the following work practices:

NR 421.05(2m)(a)2.a. a. Maintain the equipment being cleaned as leak free.

NR 421.05(2m)(a)2.b. b. Drain VOC-containing cleaning materials from the cleaned equipment upon completion of cleaning.

NR 421.05(2m)(a)2.c. c. Store or dispose of VOC-containing cleaning materials, including waste solvent, in a manner that will prevent evaporation into the atmosphere.

NR 421.05(2m)(a)2.d. d. Store all VOC-containing cleaning materials in closed containers.

NR 421.05(2m)(a)3. 3. Collect and vent the emissions from equipment cleaning to an emission control system that has an overall control efficiency of 80% or more on a mass basis. If incineration is used to control emissions, at least 90% of the organic carbon shall be oxidized to carbon dioxide.

NR 421.05(2m)(a)4. 4. Use no more than 228 liters (60 gallons) of virgin solvent per month. Solvent or solvent solution that is reused or recycled (either onsite or offsite), for further use in equipment cleaning or the manufacture of coating is not included in this limit.

NR 421.05(2m)(b) (b) The owner or operator of a facility engaged in wipe cleaning may not use open containers for the storage of solvent or solvent solution used for cleaning or for the storage or disposal of any material impregnated with solvent or solvent solution used for cleaning.

NR 421.05(3) (3) Compliance schedule.

NR 421.05(3)(a) (a) Paragraph (b) applies only to a synthetic resin manufacturing facility which is in existence on January 1, 1994 and which meets one of the following criteria:

NR 421.05(3)(a)1. 1. The facility is located in the county of Door, Kewaunee, Manitowoc, Sheboygan, or Walworth.

NR 421.05(3)(a)2. 2. The facility is located in the county of Kenosha, Milwaukee, Ozaukee, Racine, Washington, or Waukesha and was not subject to this section prior to January 1, 1994.

NR 421.05(3)(b) (b) The owner or operator of any source identified under par. (a) shall:

NR 421.05(3)(b)1. 1. Notify the department’s bureau of air management in writing by April 1, 1994. This notification shall provide the name and location of the affected facility and include VOC emission data if necessary to support eligibility under this subsection.

NR 421.05(3)(b)2. 2. Achieve final compliance with the requirements of this section no later than May 31, 1995.

NR 421.05(3)(c) (c) The owner or operator of a synthetic resin manufacturing facility subject to sub. (2m) shall achieve final compliance with sub. (2m) no later than February 1, 2013.

NR 421.05(4) (4) Recordkeeping.

NR 421.05(4)(a) (a) Except as provided in par. (c) and in addition to the applicable recordkeeping requirements in s. NR 439.04, the owner or operator of a synthetic resins manufacturing facility subject to sub. (2m) shall collect and record the following information, as applicable:

NR 421.05(4)(a)1. 1. Total volume of virgin solvent used per month.

NR 421.05(4)(a)2. 2. VOC content in kilograms per liter or pounds per gallon.

NR 421.05(4)(a)3. 3. VOC composite partial vapor pressure in mm of Hg at 20ºC.

NR 421.05(4)(b) (b) The owner or operator of a synthetic resins manufacturing facility shall maintain the information under par. (a) at the facility for a minimum of 5 years and shall make the information available to an authorized department representative at any time during normal working hours.

NR 421.05(4)(c) (c) The provisions of par. (a) do not apply to solvent or solvent solution which is used to clean or flush a mill or vat during the manufacture of a synthetic resin and which is subsequently incorporated into the same batch.

NR 421.05 History History: Cr. Register, September, 1986, No. 369, eff. 10-1-86; am. (1), (2) (a) 1. and b. and (b), (3) (b) and (c) 4., r. and recr. (2) (e), renum. (2) (f) to be (2) (h) and am., cr. (2) (f) and (g), r. (3) (c) 5., Register, February, 1990, No. 410, eff. 3-1-90; am. (1), (2) (a) (intro.) and (b), cr. (1) (b), r. and recr. (3), Register, December, 1993, No. 456, eff. 1-1-94; am. (2) (a) (intro.), (e) (intro.) and 2., cr. (2) (e) 3., Register, December, 1995, No. 480, eff. 1-1-96; am. (1) (b), (2) (a) (intro.), 1., (3) (a), Register, August, 1996, No. 488, eff. 9-1-96; am. (2) (e) 3., Register, October, 1999, No. 526, eff. 11-1-99; CR 11-005: am. (1) (a), (b) (intro.), (3) (a) (intro.), cr. (1) (c), (2m), (3) (c), (4) Register January 2012 No. 673, eff. 2-1-12.

NR 421.06 NR 421.06 Coatings manufacturing.

NR 421.06(1) (1) Applicability.

NR 421.06(1)(a) (a) Effective October 1, 1986, subs. (2) and (3) (a) and (b) apply to pigment dispersion chambers, thinning tanks, tinting, straining, blending tanks, and other process vessels used in any coatings manufacturing facility which has maximum theoretical emissions of VOCs from the processes greater than or equal to 100 tons per year and which is located in the county of Kenosha, Milwaukee, Ozaukee, Racine, Washington, or Waukesha.