Wisconsin Administrative Code › Department of Natural Resources › NR 400-499 - Environmental Protection - Air Pollution Control › Chapter NR 449 - Control of vinyl chloride emissions › Section NR 449.10 - Emission monitoring

Current through June 24, 2024
(1) A vinyl chloride monitoring system shall
				be used to monitor on a continuous basis the emissions from the sources for
				which emission limits are prescribed in ss.
				NR
				449.04(1) and (2),
				449.05(1) and
				449.06(1) (a), (2) to
				(4), and for any control system to which
				vinyl chloride reactor emissions are required to be ducted in s.
				NR
				449.06(1) (b) or to which fugitive
				emissions are required to be ducted in s.
				NR
				449.07(2) (a) 2., (b), (e), (f) 2. and (i)
				2.
(2) The vinyl chloride monitoring system used
				to meet the requirement in sub. (1) shall be a device which obtains air samples
				from one or more points on a continuous sequential basis and analyzes the
				samples with gas chromatography or, if the owner or operator assumes that all
				hydrocarbons measured are vinyl chloride, with infrared spectrophotometry,
				flame ion detection, or an equivalent or alternative method. The vinyl chloride
				monitoring system used to meet the requirements in s.
				NR
				449.07(2) (h) 2. may be used to meet
				the requirements of this section.
(3) A daily span check shall be conducted for
				each vinyl chloride monitoring system used. For all of the emission sources
				listed in sub. (1), except the one for which an emission limit is prescribed in
				s.
				NR
				449.04(2), the daily span check shall
				be conducted with a concentration of vinyl chloride equal to 10 parts per
				million. For the emissions source for which an emission limit is prescribed in
				s.
				NR
				449.04(2), the daily span check shall
				be conducted with a concentration of vinyl chloride which is determined to be
				equivalent to the emission limit for that source based on the emission test
				required by s.
				NR
				449.09. The calibration shall be done with:
(a) A calibration gas mixture prepared from
				the gases specified in sections 5.2.1 and 5.2.2 and in accordance with section
				7.1 of Method 106 of 40 CFR part 61, Appendix B, incorporated by reference in
				s.
				NR
				484.04(23), or
(b) A calibration gas cylinder standard
				containing the appropriate concentration of vinyl chloride. The gas composition
				of the calibration gas cylinder standard shall have been certified by the
				manufacturer. The manufacturer must have recommended a maximum shelf life for
				each cylinder so that the concentration does not change greater than plus or
				minus 5% from the certified value. The date of gas cylinder preparation,
				certified vinyl chloride concentration and recommended maximum shelf life must
				have been affixed to the cylinder before shipment from the manufacturer to the
				buyer. If a gas chromatograph is used as the vinyl chloride monitoring system,
				these gas mixtures may be directly used to prepare a chromatograph calibration
				curve as described in section 7.3 of Method 106 of 40 CFR part 61, Appendix B,
				incorporated by reference in s.
				NR
				484.04(23). The requirements in
				sections 5.2.3.1 and 5.2.3.2 of Method 106 for certification of cylinder
				standards and for establishment and verification of calibration standards shall
				be followed.