CHAPTER 445B - AIR CONTROLS

NAC 445B.142 “Prevention of significant deterioration of air quality” defined. (NRS 445B.210) “Prevention of significant deterioration of air quality” has the meaning ascribed to it in 40 C.F.R. § 52.21. (Added to NAC by Environmental Comm’n, eff. 12-13-93)—(Substituted in revisi…

NAC 445B.144 “Process equipment” defined. (NRS 445B.210) “Process equipment” means any equipment used for storing, handling, transporting, processing or changing any material, excluding that equipment specifically defined in NAC 445B.001 to 445B.603, inclusive, as fuel-burning eq…

NAC 445B.145 “Process weight” defined. (NRS 445B.210) “Process weight” means the total weight of all materials introduced into an emission unit including solid fuels, but excluding liquids and gases used solely as fuels and air introduced for purposes of combustion of the fuel. […

NAC 445B.146 “Project” defined. (NRS 445B.210, 445B.300) “Project” means a physical change in, or change in the method of operation of, an existing major stationary source. (Added to NAC by Environmental Comm’n by R054-15, eff. 10-27-2015)

NAC 445B.147 “Program” defined. (NRS 445B.210) “Program” means the program for issuing operating permits to Class I sources which the Administrator has approved as complying with the requirements of 40 C.F.R. Part 70. (Added to NAC by Environmental Comm’n, 12-13-93, eff. 11-15-94…

NAC 445B.148 “Proportional sampling” defined. (NRS 445B.210) “Proportional sampling” means sampling at a rate that produces a constant ratio of sampling rate to the rate of the flow of stack gas. [Environmental Comm’n, Air Quality Reg. § 1.146, eff. 12-4-76; A and renumbered as §…

NAC 445B.149 “Quantifiable” defined. (NRS 445B.210, 445B.300) “Quantifiable” means an emission reduction that can be reliably measured or determined and reproduced. (Added to NAC by Environmental Comm’n by R054-15, eff. 10-27-2015)

NAC 445B.1505 “Reasonably available control technology” defined. (NRS 445B.210, 445B.300) “Reasonably available control technology” means the lowest emission limitation that a particular source is capable of meeting by the application of control technology that is reasonably avai…

NAC 445B.151 “Reference conditions” defined. (NRS 445B.210) “Reference conditions” means that all measurements of ambient air quality are corrected to a reference temperature of 77 degrees Fahrenheit (25 degrees Centigrade) and to a reference pressure of 29.92 inches (760 millime…

NAC 445B.152 “Reference method” defined. (NRS 445B.210) “Reference method” means any method of sampling and analyzing for a regulated air pollutant as described in Appendix A of 40 C.F.R. § 60. [Environmental Comm’n, Air Quality Reg. § 1.148, eff. 12-4-76; A and renumbered as § 1…

NAC 445B.1525 “Registry” defined. (NRS 445B.210, 445B.300) “Registry” means a public record established and maintained by the Director of the ownership, creation, deposit, use, sale or transfer of emission reduction credits. (Added to NAC by Environmental Comm’n by R054-15, eff. …

NAC 445B.153 “Regulated air pollutant” defined. (NRS 445B.210, 445B.300) “Regulated air pollutant” means: 1. Nitrogen oxides or any volatile organic compounds; 2. Any pollutant subject to: (a) A national ambient air quality standard and any constituents or precursors for such pol…

NAC 445B.154 “Renewal of an operating permit” defined. (NRS 445B.210) “Renewal of an operating permit” means the process by which a holder of an operating permit applies for and the Director reissues the operating permit at the end of its term. (Added to NAC by Environmental Comm…

NAC 445B.156 “Responsible official” defined. (NRS 445B.210) “Responsible official” means: 1. For a corporation: (a) A president; (b) A vice president in charge of a principal business function; (c) A secretary; (d) A treasurer; or (e) An authorized representative of such a person…

NAC 445B.157 “Revision of an operating permit” defined. (NRS 445B.210) “Revision of an operating permit” means any modification of, or any administrative amendment or administrative revision to, an operating permit. (Added to NAC by Environmental Comm’n, 12-13-93, eff. 11-15-94; …

NAC 445B.161 “Run” defined. (NRS 445B.210) “Run” means the net period of time during which an emission sample is collected. Unless otherwise specified, a run may be either intermittent or continuous within the limits of good engineering practice. [Environmental Comm’n, Air Qualit…

NAC 445B.163 “Salvage operation” defined. (NRS 445B.210) “Salvage operation” means any operation conducted in whole or in part for the salvaging or reclaiming of any product or material. [Environmental Comm’n, Air Quality Reg. § 1.157, eff. 11-7-75; renumbered as § 1.161, 12-4-76…

NAC 445B.164 “Scheduled maintenance” defined. (NRS 445B.210) “Scheduled maintenance” means the maintenance which is planned by the management of a stationary source, or any part thereof, which is anticipated at least 1 month in advance. (Added to NAC by Environmental Comm’n, eff.…

NAC 445B.165 “Scheduled repair” defined. (NRS 445B.210) “Scheduled repair” means the repair of a stationary source, or any part thereof, which occurs within 1 month of discovery of the need for the repair and which is not a part of scheduled maintenance. (Added to NAC by Environm…

NAC 445B.167 “Shutdown” defined. (NRS 445B.210) “Shutdown” means the cessation of operation of an affected facility for any purpose. [Environmental Comm’n, Air Quality Reg. § 1.166, eff. 12-4-76]—(Substituted in revision for NAC 445.606)

NAC 445B.168 “Single-chamber incinerator” defined. (NRS 445B.210) “Single-chamber incinerator” means an incinerator with one chamber that serves for ignition, combustion and ash removal of a design approved by the Division of Environmental Protection of the State Department of Co…

NAC 445B.172 “Six-minute period” defined. (NRS 445B.210) “Six-minute period” means any one of the 10 equal parts of a 1-hour period. [Environmental Comm’n, Air Quality Reg. § 1.175, eff. 12-4-76]—(Substituted in revision for NAC 445.617)

NAC 445B.174 “Smoke” defined. (NRS 445B.210) “Smoke” means small particles consisting predominantly, but not exclusively, of carbon, ash or other combustible material, resulting from incomplete combustion. [Environmental Comm’n, Air Quality Reg. § 1.59, eff. 11-7-75; renumbered a…

NAC 445B.176 “Solid waste” defined. (NRS 445B.210) “Solid waste” means refuse, more than 50 percent of which is municipal type waste consisting of a mixture of paper, wood, yard wastes, food wastes, plastics, leather, rubber, and other combustibles and noncombustible materials su…

NAC 445B.177 “Source” defined. (NRS 445B.210) “Source” has the meaning ascribed to it in NRS 445B.155. [Environmental Comm’n, Air Quality Reg. § 1.60, eff. 11-7-75; renumbered as § 1.177, 12-4-76]—(NAC A 10-30-95)

NAC 445B.178 “Source reduction” defined. (NRS 445B.210) 1. “Source reduction” means any practice which reduces: (a) The amount of a regulated air pollutant or pollutants, including fugitive emissions, emitted to the ambient air before the application of control equipment; and (b)…

NAC 445B.180 “Stack” and “chimney” defined. (NRS 445B.210) “Stack” or “chimney” means any flue, conduit or duct which conducts a regulated air pollutant to the atmosphere. [Environmental Comm’n, Air Quality Reg. § 1.62, eff. 11-7-75; renumbered as § 1.178, 12-4-76]—(NAC A 10-14-8…

NAC 445B.182 “Standard” defined. (NRS 445B.210) “Standard” means a standard of performance that is proposed or promulgated by the Administrator or the Director pursuant to NAC 445B.001 to 445B.735, inclusive. [Environmental Comm’n, Air Quality Reg. § 1.180, eff. 12-4-76]—(NAC A 3…

NAC 445B.185 “Start-up” defined. (NRS 445B.210) “Start-up” means the setting in operation of an affected facility for any purpose. [Environmental Comm’n, Air Quality Reg. § 1.179, eff. 12-4-76]—(Substituted in revision for NAC 445.627)

NAC 445B.187 “Stationary source” defined. (NRS 445B.210) 1. “Stationary source” means all buildings, structures, facilities and installations, including temporary sources, which: (a) Belong to the same major industrial groupings described in the Standard Industrial Classification…

NAC 445B.190 “Stop order” defined. (NRS 445B.210) “Stop order” means a written notice by the Director served on a person or persons requiring such persons to cease the activity that the Director, pursuant to NAC 445B.277, has determined is in violation of any provision of NAC 445…

NAC 445B.191 “Surplus” defined. (NRS 445B.210, 445B.300) “Surplus” means an emission reduction that: 1. Has not been relied on in any air quality program related to any nonattainment area state implementation plan; 2. Is not a requirement of any nonattainment area state implement…

NAC 445B.194 “Temporary source” defined. (NRS 445B.210) “Temporary source” means any building, structure, facility or installation which: 1. Emits or may emit any regulated air pollutant; 2. May be moved from one location to another; 3. Is located or operated in a location for a …

NAC 445B.196 “Toxic regulated air pollutant” defined. (NRS 445B.210) “Toxic regulated air pollutant” means a substance designated as such by the Commission based upon the Commission’s determination of the extent to which the substance presents a risk to the public health. (Added …

NAC 445B.198 “Uncombined water” defined. (NRS 445B.210) “Uncombined water” means visible mist or condensed water vapor. [Environmental Comm’n, Air Quality Reg. § 1.65, eff. 11-7-75; renumbered as § 1.205, 12-4-76; A and renumbered as § 1.200, 8-28-79]—(Substituted in revision for…

NAC 445B.200 “Violation” defined. (NRS 445B.210) “Violation” means a failure to comply with any of the provisions of NAC 445B.001 to 445B.390, inclusive, any applicable requirement or any condition of an operating permit. [Environmental Comm’n, Air Quality Reg. § 1.203, eff. 8-28…

NAC 445B.202 “Volatile organic compounds” defined. (NRS 445B.210) “Volatile organic compounds” has the meaning ascribed to it in 40 C.F.R. § 51.100(s), as incorporated by reference in NAC 445B.221. [Environmental Comm’n, Air Quality Reg. § 1.67, eff. 11-7-75; renumbered as § 1.20…

NAC 445B.205 “Waste” defined. (NRS 445B.210) “Waste” means useless, unneeded, or superfluous matter or discarded or excess material. [Environmental Comm’n, Air Quality Reg. § 1.68, eff. 11-7-75; renumbered as § 1.209, 12-4-76; A and renumbered as § 1.205, 8-28-79]—(Substituted in…

NAC 445B.207 “Wet garbage” defined. (NRS 445B.210) “Wet garbage” means a combination of waste and garbage which contains more than 50 percent moisture. [Environmental Comm’n, Air Quality Reg. § 1.69, eff. 11-7-75; renumbered as § 1.211, 12-4-76; A and renumbered as § 1.207, 8-28-…

NAC 445B.209 “Year” defined. (NRS 445B.210) “Year” means any consecutive 365-day period. (Added to NAC by Environmental Comm’n, eff. 10-22-87)—(Substituted in revision for NAC 445.6535)

NAC 445B.211 Abbreviations. (NRS 445B.210) The abbreviations used in NAC 445B.001 to 445B.390, inclusive, have the following meanings: BART........................................................ Best available retrofit technology Btu..............................................…

NAC 445B.220 Severability. (NRS 445B.210) If any of the provisions of NAC 445B.001 to 445B.390, inclusive, or any application thereof to any person, thing or circumstance is held invalid, it is intended that such invalidity not affect the remaining provisions, or their applicatio…

NAC 445B.2201 Hazardous air pollutants and toxic regulated air pollutants: Identification. (NRS 445B.210) 1. A substance is a hazardous air pollutant if it: (a) Is on the federal list of hazardous air pollutants set forth in 42 U.S.C. § 7412(b), as adopted by reference in NAC 445…

NAC 445B.22013 Hazardous air pollutants and toxic regulated air pollutants: Prohibited discharge. (NRS 445B.210) An owner or operator shall not cause or permit the discharge into the atmosphere from any stationary source of any hazardous air pollutant or toxic regulated air pollu…

NAC 445B.22017 Visible emissions: Maximum opacity; determination and monitoring of opacity. (NRS 445B.210) 1. Except as otherwise provided in this section and NAC 445B.2202, no owner or operator may cause or permit the discharge into the atmosphere from any emission unit which is…

NAC 445B.2202 Visible emissions: Exceptions for stationary sources. (NRS 445B.210) The provisions of NAC 445B.22017 do not apply to: 1. Smoke from the open burning described in NAC 445B.22067; 2. Smoke discharged in the course of training air pollution control inspectors to obser…

NAC 445B.22027 Emissions of particulate matter: Maximum allowable throughput for calculating emissions rates. (NRS 445B.210) For purposes of NAC 445B.22027 to 445B.22037, inclusive, the maximum allowable throughput to be used to calculate allowable emission rates must be the maxi…