Wisconsin Administrative Code › Department of Natural Resources › NR 400-499 - Environmental Protection - Air Pollution Control › Chapter NR 463 - National Emission Standards For Hazardous Air Pollutants For Metals Treating And Processing › Subchapter I - Chromium Emissions from Hard and Decorative Chromium Electroplating and Chromium Anodizing Tanks › Section NR 463.07 - Monitoring to demonstrate continuous compliance

Current through June 24, 2024
The owner or operator of an affected source subject to the
					 emission limitations of this subchapter shall conduct monitoring according to
					 the type of air pollution control technique that is used to comply with the
					 emission limitation. The monitoring required to demonstrate continuous
					 compliance with the emission limitations is identified in this section for the
					 air pollution control techniques expected to be used by the owners or operators
					 of affected sources.
(1) COMPOSITE
				  MESH-PAD SYSTEMS.
(a) During the initial
				  performance test, the owner or operator of an affected source, or a group of
				  affected sources under common control, complying with the emission limitations
				  in s.
				  NR
				  463.04 through the use of a composite mesh-pad system
				  shall determine the outlet chromium concentration using the test methods and
				  procedures in s.
				  NR
				  463.09(3), and shall establish as a
				  site-specific operating parameter the pressure drop across the system, setting
				  the value that corresponds to compliance with the applicable emission
				  limitation, using the procedures in s.
				  NR
				  463.09(4) (e). An owner or operator
				  may conduct multiple performance tests to establish a range of compliant
				  pressure drop values, or may set as the compliant value the average pressure
				  drop measured over the 3 test runs of one performance test and accept ±
				  2 inches of water column from this value as the compliant range. [DOUBLE
				  DAGGER]
(b) On and after the date
				  on which the initial performance test is required to be completed under s.
				  NR
				  460.06, the owner or operator of an affected source,
				  or group of affected sources under common control, shall monitor and record the
				  pressure drop across the composite mesh-pad system once each day that any
				  affected source is operating. To be in compliance with the standards in s.
				  NR
				  463.04, the composite mesh-pad system shall be
				  operated within ± 2 inches of water column of the pressure drop value
				  established during the initial performance test, or shall be operated within
				  the range of compliant values for pressure drop established during multiple
				  performance tests.
(c) The owner or
				  operator of an affected source complying with the emission limitation of s.
				  NR
				  463.04 through the use of a composite mesh-pad system
				  may repeat the performance test and establish as a new site-specific operating
				  parameter the pressure drop across the composite mesh-pad system according to
				  the requirements in par. (a) or (b). To establish a new site-specific operating
				  parameter for pressure drop, the owner or operator shall satisfy all of the
				  following requirements:
1. Determine the
				  outlet chromium concentration using the test methods and procedures in s.
				  NR
				  463.09(3).
2. Establish the site-specific operating
				  parameter value using the procedures in s.
				  NR
				  463.09(4).
3. Satisfy the recordkeeping requirements in
				  s.
				  NR
				  463.103.
4. Satisfy the reporting requirements in s.
				  NR
				  463.106.
(d) The requirement to operate a composite
				  mesh-pad system within the range of pressure drop values established under
				  pars. (a) to (c) does not apply during the automatic-washdown cycles of the
				  composite-mesh pad system.