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NYC Mechanical Code

§ 502.8.4 — § 502.8.4

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What is NYC MC § 502.8.4?

Quick Answer

This section mandates the provision of mechanical exhaust ventilation for the dispensing or use of hazardous materials exceeding specified quantities. The ventilation must capture harmful gases, fumes, mists, or vapors at the point of generation, unless it is proven that these substances do not produce such hazards. Applies to building owners managing hazardous materials.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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502.8.4 Indoor dispensing and use – point sources.

MC § 502.8.4

Where gases, liquids or solids in amounts exceeding the maximum allowable quantity per control area and having a hazard ranking of 3 or 4 in accordance with NFPA 704 are dispensed or used, mechanical exhaust ventilation shall be provided to capture gases, fumes, mists or vapors at the point of generation. Exception: Where it can be demonstrated that the gases, liquids or solids do not create harmful gases, fumes, mists or vapors.

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