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 III - Iron and Steel Foundries
Section NR 463.24 - General compliance requirements

(a) You shall be in compliance with the emissions limitations, work practice standards and operation and maintenance requirements in this subchapter at all times, except during periods of startup, shutdown or malfunction.

(b) During the period between the compliance date specified for your iron and steel foundry in s. NR 463.21(4) and the date when applicable operating limits have been established during the initial performance test, you shall maintain a log detailing the operation and maintenance of the process and emissions control equipment.

(c) You shall develop a written startup, shutdown and malfunction plan according to the provisions in s. NR 460.05(4) (c). The startup, shutdown and malfunction plan shall also specify what constitutes a shutdown of a cupola and how to determine that operating conditions are normal following startup of a cupola.