Wisconsin Administrative Code
Department of Natural Resources
NR 400-499 - Environmental Protection - Air Pollution Control
Chapter NR 431 - Control of visible emissions
- Section NR 431.01 - Applicability; purpose
- Section NR 431.02 - Definitions
- Section NR 431.03 - General limitations
- Section NR 431.04 - Emission limitations on or before April 1, 1972
- Section NR 431.05 - Emission limitations after April 1, 1972
- Section NR 431.07 - Establishing alternate opacity limits
Current through August 26, 2024
Corrections made under s. 13.93(2m) (b) 7, Stats., Register, December, 1996, No. 492.
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