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NEW YORK CITY ADMINISTRATIVE CODE
Title 1: General Provisions
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Title 3: Elected officials
Title 4: Property of the City
Title 5: Budget; Capital Projects
Title 6: Contracts, Purchases and Franchises
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Title 16-A: [Commercial Waste Removal]
Title 16-B: Commercial Waste Zones
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Title 20: Consumer and Worker Protection
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Title 27: Construction and Maintenance
Title 28: New York City Construction Codes
Chapter 1: Administration
Chapter 2: Enforcement
Chapter 3: Maintenance of Buildings
Chapter 4: Licensing and Registration of Businesses, Trades and Occupations Engaged in Building Work
Chapter 5: Miscellaneous Provisions
Chapter 6: New York City Plumbing Code
Chapter 7: New York City Building Code
Chapter 8: New York City Mechanical Code
Article 801: Enactment and Update of the New York City Mechanical Code
§ 28-801.1 Update.
§ 28-801.2 Enactment of the New York City Mechanical Code.
Chapter 1: Administration
Chapter 2: Definitions
Chapter 3: General Regulations
Chapter 4: Ventilation
Chapter 5: Exhaust Systems
Section MC 501: General
Section MC 502: Required Systems
502.1 General.
502.1.1 Exhaust location.
502.1.2 Fuel-dispensing areas.
502.1.3 Equipment, appliance and service rooms.
502.1.4 Hazardous exhaust.
502.2 Aircraft fueling and defueling.
502.3 Battery-charging areas for powered vehicles and equipment.
502.4 Stationary storage battery systems.
502.4.1 Hydrogen limit in rooms.
502.4.2 Ventilation rate in rooms.
502.4.3 Supervision.
502.5 Valve-regulated lead-acid batteries in cabinets.
502.5.1 Hydrogen limit in cabinets.
502.5.2 Ventilation rate in cabinets.
502.5.3 Supervision.
502.6 Dry cleaning plants.
502.6.1 Type II and III systems.
502.6.2 Type IV and V systems.
502.6.3 Spotting and pretreating.
502.7 Application of flammable finishes.
502.7.1 During construction.
502.7.2 Limited spraying spaces.
502.7.3 Flammable vapor areas.
502.7.3.1 Operation.
502.7.3.2 Recirculation.
502.7.3.3 Air velocity.
502.7.3.3.1 Open face or open front spray booth.
502.7.3.3.2 Enclosed spray booth or spray room with openings for product conveyance.
502.7.3.4 Ventilation obstruction.
502.7.3.5 Independent ducts.
502.7.3.6 Fan motors and belts.
502.7.4 Dipping operations.
502.7.5 Electrostatic apparatus.
502.7.6 Powder coating.
502.7.7 Floor resurfacing operations.
502.7.8 Resin application areas.
502.8 Hazardous materials - general requirements.
502.8.1 Storage in excess of the maximum allowable quantities.
502.8.1.1 System requirements.
502.8.2 Gas rooms, exhausted enclosures and gas cabinets.
502.8.3 Indoor dispensing and use.
502.8.4 Indoor dispensing and use - point sources.
502.8.5 Closed systems.
502.9 Hazardous materials - requirements for specific materials.
502.9.1 Compressed gases - medical gas systems.
502.9.2 Corrosives.
502.9.3 Cryogenics.
502.9.4 Explosives.
502.9.5 Flammable and combustible liquids.
502.9.5.1 Vaults.
502.9.5.2 Storage rooms and warehouses.
502.9.5.3 Cleaning machines.
502.9.5.4 Use, dispensing and mixing.
502.9.5.5 Bulk plants or terminals.
502.9.5.5.1 General.
502.9.5.5.2 Basements and pits.
502.9.5.5.3 Dispensing of Class I liquids.
502.9.6 Highly toxic and toxic liquids.
502.9.6.1 Treatment system.
502.9.6.2 Open and closed systems.
502.9.7 Highly toxic and toxic compressed gases - any quantity.
502.9.7.1 Gas cabinets.
502.9.7.2 Exhausted enclosures.
502.9.8 Highly toxic and toxic compressed gases - quantities exceeding the maximum allowable quantity per control area.
502.9.8.1 Ventilated areas.
502.9.8.2 Local exhaust for portable tanks.
502.9.8.3 Piping and controls - stationary tanks.
502.9.8.4 Gas rooms.
502.9.8.5 Treatment system.
502.9.8.6 Process equipment.
502.9.9 Ozone gas generators.
502.9.10 LP-gas distribution facilities.
502.9.11 Silane gas.
502.10 Hazardous production materials (HPM).
502.10.1 Where required.
502.10.2 Penetrations.
502.10.3 Treatment systems.
502.11 Motion picture projectors.
502.11.1 Projectors with an exhaust discharge.
502.11.2 Projectors without exhaust connection.
502.12 Organic coating processes.
502.13 Public garages.
502.14 Motor vehicle operation.
502.15 Repair garages.
502.16 Repair garages for natural gas- and hydrogen-fueled vehicles.
502.16.1 Design.
502.16.2 Operation.
502.17 Tire rebuilding or recapping.
502.17.1 Buffing machines.
502.18 Specific rooms.
502.19 Indoor firing ranges.
502.20 Manicure and pedicure stations.
502.21 Domestic kitchen exhaust systems.
502.22 Nonproduction chemical laboratories.
Section MC 503: Motors and Fans
Section MC 504: Clothes Dryer Exhaust
Section MC 505: Domestic Kitchen Exhaust Equipment
Section MC 506: Commercial Kitchen Hood Ventilation System Ducts and Exhaust Equipment
Section MC 507: Commercial Kitchen Hoods
Section MC 508: Commercial Kitchen Makeup Air
Section MC 509: Fire Suppression Systems
Section MC 510: Hazardous Exhaust Systems
Section MC 511: Dust, Stock and Refuse Conveying Systems
Section MC 512: Subslab Soil Exhaust Systems
Section MC 513: Smoke Control Systems
Section MC 514: Energy Recovery Ventilation Systems
Section MC 515: Postfire Smoke Purge Systems
Chapter 6: Duct Systems
Chapter 7: Combustion, Ventilation, and Dilution Air
Chapter 8: Chimneys and Vents
Chapter 9: Specific Appliances and Equipment
Chapter 10: Boilers, Water Heaters and Pressure Vessels
Chapter 11: Refrigeration
Chapter 12: Hydronic Piping
Chapter 13: Fuel-Oil Piping and Storage
Chapter 14: Solar Systems
Chapter 15: Referenced Standards
Appendix A: Chimney Connector Pass-Throughs
Appendix B: Reserved
Appendix C: Fuel Oil Storage Tank Venting Options
Chapter 9: New York City Fuel Gas Code
Chapter 10: New York City Energy Code
Chapter 11: The New York City Electrical Code
Title 29: New York City Fire Code
Title 30: Emergency Management
Title 31: Department of Veterans' Services
Title 32: Labor and Employment
Title 33: Investigations
Title 34: Racial Equity
Appendix A: Unconsolidated Local Laws
The Rules of the City of New York
THE RULES OF THE CITY OF NEW YORK
Title 1: Department of Buildings
Title 2: Board of Standards and Appeals
Title 3: Fire Department
Title 6: Department of Consumer and Worker Protection
Title 9: Procurement Policy Board Rules
Title 12: Franchise and Concession Review Committee
Title 15: Department of Environmental Protection
Title 16: Department of Sanitation
Title 17: Business Integrity Commission
Title 19: Department of Finance
Title 20: Tax Appeals Tribunal
Title 21: Tax Commission
Title 22: Banking Commission
Title 24: Department of Health and Mental Hygiene
Title 25: Department of Mental Health and Retardation [Repealed]
Title 28: Housing Preservation and Development
Title 29: Loft Board
Title 30: Rent Guidelines Board
Title 31: Mayor's Office of Homelessness and Single Room Occupancy
Title 34: Department of Transportation
Title 35: Taxi and Limousine Commission
Title 38: Police Department
Title 38-A: Civilian Complaint Review Board
Title 39: Department of Correction
Title 40: Board of Correction
Title 41: Department of Juvenile Justice
Title 42: Department of Probation
Title 43: Mayor
Title 44: Comptroller
Title 45: Borough Presidents
Title 46: Law Department
Title 47: Commission on Human Rights
Title 48: Office of Administrative Trials and Hearings (OATH)
Title 49: Department of Records and Information Services
Title 50: Community Assistance Unit
Title 51: City Clerk
Title 52: Campaign Finance Board*
Title 53: Conflicts of Interest Board
Title 55: Department of Citywide Administrative Services
Title 56: Department of Parks and Recreation
Title 57: Art Commission
Title 58: Department of Cultural Affairs
Title 60: Civil Service Commission
Title 61: Office of Collective Bargaining
Title 62: City Planning
Title 63: Landmarks Preservation Commission
Title 66: Department of Small Business Services
Title 67: Department of Information Technology and Telecommunications
Title 68: Human Resources Administration
Title 69: Department of Aging
Title 70: In Rem Foreclosure Release Board
Title 71: Voter Assistance Commission
Title 72: Office of Emergency Management
Title 73: Civic Engagement Commission
Title 74: Community Hiring
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502.9.8.2 Local exhaust for portable tanks.
A means of local exhaust shall be provided to capture leakage from indoor and outdoor portable tanks. The local exhaust shall consist of portable ducts or collection systems designed to be applied to the site of a leak in a valve or fitting on the tank. The local exhaust system shall be located in a gas room. Exhaust shall be directed to a treatment system where required by the New York City Fire Code.
502.9.8.3 Piping and controls – stationary tanks.
Filling or dispensing connections on indoor stationary tanks shall be provided with a means of local exhaust. Such exhaust shall be designed to capture fumes and vapors. The exhaust shall be directed to a treatment system where required by the New York City Fire Code.
502.9.8.4 Gas rooms.
The ventilation system for gas rooms shall be designed to operate at a negative pressure in relation to the surrounding area. The exhaust ventilation from gas rooms shall be directed to an exhaust system.
502.9.8.5 Treatment system.
The exhaust ventilation from gas cabinets, exhausted enclosures and gas rooms, and local exhaust systems required in Sections 502.9.8.2 and 502.9.8.3 shall be directed to a treatment system where required by the New York City Fire Code. 
502.9.8.6 Process equipment.
Effluent from indoor and outdoor process equipment containing highly toxic or toxic compressed gases which could be discharged to the atmosphere shall be processed through an exhaust scrubber or other processing system. Such systems shall be in accordance with the New York City Fire Code.
502.9.9 Ozone gas generators.
Ozone cabinets and ozone gas-generator rooms for systems having a maximum ozone-generating capacity of one-half pound (0.23 kg) or more over a 24-hour period shall be mechanically ventilated at a rate of not less than six air changes per hour. For cabinets, the average velocity of ventilation at makeup air openings with cabinet doors closed shall be not less than 200 feet per minute (1.02 m/s).
502.9.10 LP-gas distribution facilities.
LP-gas distribution facilities shall conform to the requirements of the New York City Fire Code.
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