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Arizona Administrative Code (Last Updated: November 17, 2016) |
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Title 11. MINES |
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Chapter 1. STATE MINE INSPECTOR |
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Article 4. AIR QUALITY, VENTILATION AND RADIATION, AND PHYSICAL AGENTS |
Section R11-1-427. Operation of diesel engines -- toxic gases
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Diesel engines must not be operated when the atmosphere adjacent to its engine contains toxic gases above the tolerance set by the United States Bureau of Mines as listed below:
Carbon dioxide 0.5% by vol.
Carbon monoxide 0.01% by vol.
Nitrogen dioxide
0.0005%
by vol.
Oxygen must be at least
19.5%
by vol.