// CODE SNIPPET
425.3.6.4 Exhaust
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When the degree of contamination of the exhaust stream exceeds the concentration limits permitted by the health code, the duct system shall be equipped with devices to decontaminate the air to a safe level before discharging to the outdoor air.
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NYC Building Code 2008 > 4 Special Detailed Requirements Based on Use and Occupancy > 420 Uses and Occupancies Involving Radioactive Materials and Radiation-Producing Equipment > 420.3 Laboratories > 420.3.6 Ventilation > 420.3.6.4 Exhaust
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