Wisconsin Administrative Code › Department of Natural Resources › NR 400-499 - Environmental Protection - Air Pollution Control › Chapter NR 422 - Control Of Organic Compound EmissionsFrom Surface Coating, Printing And Asphalt Surfacing Operations › Section NR 422.04 - Methods of compliance

Current through June 24, 2024
(1) IN-LINE AVERAGING. Compliance with the
			emission limitations of this chapter may be achieved through a daily
			volume-weighted average of all coatings or inks applied by emission units in a
			process line subject to the same numerical emission limitation. Any owner or
			operator achieving compliance by means of this subsection shall comply with the
			reporting requirements of s.
			NR
			439.03(7) and the recordkeeping
			requirements of s.
			NR
			439.04(5) (g).
(a) No owner or operator of a coating line
			subject to an emission limitation contained in ss.
			NR
			422.05 to 422.084, 422.09 to 422.12, 422.132, 422.135,
			422.15, 422.151, or 422.155 and complying with the emission limitation by means
			of this subsection may cause, allow or permit the daily volume-weighted average
			VOC content to exceed the emission limitation to which the coatings are
			subject. For purposes of this paragraph, daily volume-weighted average VOC
			content shall be calculated by using the following equation:
See PDF for
			  diagram
where:
VOCA is the volume-weighted average
			  VOC content of 2 or more coatings applied on a coating line during any day in
			  kilograms per liter (pounds per gallon) of coating, excluding water
i is the subscript denoting an individual coating
n is the number of different coatings subject to the same
			  numerical emission limitation applied during any day on a coating line
Ci is the VOC content of each coating
			  (i) as applied during any day on the coating line in kilograms per liter
			  (pounds per gallon) of coating, excluding water
Vi is the volume of each coating (i),
			  excluding water, as applied during any day on the coating line in liters
			  (gallons)
VT is the total volume of all n
			  coatings subject to the same emission limitation, excluding water, applied
			  during any day on the coating line in liters (gallons)
(b) No owner or operator of a printing line
			subject to an emission limitation contained in s.
			NR
			422.14(2) (a) or (b) and complying
			with the emission limitation by means of this subsection may cause, allow or
			permit the daily volume-weighted average VOC content to exceed the emission
			limitation to which the inks are subject:
1.
			When s.
			NR
			422.14(2) (a) applies, the daily
			volume-weighted average VOC content shall be calculated by using the following
			equation:
See PDF for
			  diagram
where:
VOCB is the volume-weighted average
			  VOC content of 2 or more inks applied on a printing line during any day in
			  percent VOC by volume of the volatile fraction
i is the subscript denoting an individual ink
n is the number of different inks subject to the same
			  emission limitation applied during any day on a printing line
Ci is the VOC content in percent VOC
			  by volume of the volatile fraction in each ink (i) as applied
Li is the volume of each ink (i) as
			  applied in liters (gallons)
VVFi is the volume fraction volatile
			  content in each ink (i) as applied
2. When s.
			NR
			422.14(2) (b) applies, the daily
			volume-weighted average VOC content shall be calculated by using the following
			equation:
See PDF for
			  diagram
where:
VOCC is the volume-weighted average
			  VOC content of 2 or more inks applied on a printing line during any day in
			  percent VOC by volume, excluding water
i is the subscript denoting an individual ink
n is the number of different inks subject to the same
			  emission limitation applied during any day on a printing line
Ci is the VOC content of each ink (i)
			  applied during any day on the printing line in percent VOC by volume, excluding
			  water
Vi is the volume of each ink (i),
			  excluding water, applied during any day on the printing line in liters
			  (gallons)
VT is the total volume of all n inks
			  subject to the same emission limitation, excluding water, applied during any
			  day on the printing line in liters (gallons)
(c) An owner or operator of a coating or
			printing line subject to an emission limitation in this chapter not specified
			in par. (a) or (b) may comply by means of this subsection only by obtaining
			prior department approval through an order issued under s.
			285.13(2),
			Stats., or through a permit. Any approval granted by the department under this
			paragraph shall be submitted to, and will not become effective for federal
			purposes until approved by, the administrator or designee as a source-specific
			revision to the department's state implementation plan for ozone.