Nevada Administrative Code

NAC 445B.107 “Nearby” defined. (NRS 445B.210) “Nearby” means, as used in NAC 445B.064 and 445B.083, with respect to a specific structure or terrain feature: 1. For the purpose of using the equations set forth in paragraph (b) of subsection 1 of NAC 445B.083, that distance up to f…

NAC 445B.108 “New stationary source” defined. (NRS 445B.210) “New stationary source” means: 1. For stationary sources subject to the requirements of 42 U.S.C. § 7412, a stationary source for which the owner or operator commenced construction or reconstruction after the Administra…

NAC 445B.109 “Nitrogen oxides” defined. (NRS 445B.210) “Nitrogen oxides” means all oxides of nitrogen except nitrous oxide, as measured by test methods approved by the EPA. [Environmental Comm’n, Air Quality Reg. § 1.116, eff. 12-4-76]—(NAC A 3-29-94, eff. 11-15-94)—(Substituted …

NAC 445B.112 “Nonattainment area” defined. (NRS 445B.210) “Nonattainment area” means, for any regulated air pollutant, an area: 1. Which is shown by monitored data or is calculated by air quality modeling or any other method determined by the Administrator to be reliable, to exce…

NAC 445B.113 “Nonroad engine” defined. (NRS 445B.210) “Nonroad engine” has the meaning ascribed to it in 40 C.F.R. § 89.2, as that section existed on December 31, 1997. (Added to NAC by Environmental Comm’n by R117-00, eff. 6-1-2001)

NAC 445B.1135 “Nonroad vehicle” defined. (NRS 445B.210) “Nonroad vehicle” has the meaning ascribed to it in 40 C.F.R. § 89.2, as that section existed on December 31, 1997. (Added to NAC by Environmental Comm’n by R117-00, eff. 6-1-2001)

NAC 445B.114 “Nuisance” defined. (NRS 445B.210) “Nuisance” means anything which is injurious to health, offensive to the senses or an obstruction to the free use of property and which interferes with the comfortable enjoyment of life or property. [Environmental Comm’n, Air Qualit…

NAC 445B.116 “Odor” defined. (NRS 445B.210) “Odor” means a characteristic of a regulated air pollutant which makes it perceptible to the sense of smell. [Environmental Comm’n, Air Quality Reg. § 1.43, eff. 11-7-75; renumbered as § 1.118, 12-4-76]—(NAC A 10-30-95)

NAC 445B.117 “Offset” defined. (NRS 445B.210) “Offset” means a reduction in emissions at an existing stationary source which is greater than a corresponding increase in emissions of the same regulated air pollutant at a new stationary source or a modification of a stationary sour…

NAC 445B.119 “One-hour period” defined. (NRS 445B.210) “One-hour period” means any 60-minute period. [Environmental Comm’n, Air Quality Reg. § 1.119, eff. 12-4-76]—(NAC A 10-22-87)—(Substituted in revision for NAC 445.556)

NAC 445B.121 “Opacity” defined. (NRS 445B.210) “Opacity” means the property of a substance tending to obscure vision and measured in terms of percent obscuration. The relationship between opacity and Ringelmann number is approximately equal to the following in shades of white to …

NAC 445B.122 “Open burning” defined. (NRS 445B.210) “Open burning” means any fire from which the products of combustion are emitted into the atmosphere without passing through a stack or chimney. [Environmental Comm’n, Air Quality Reg. § 1.45, eff. 11-7-75; renumbered as § 1.21, …

NAC 445B.123 “Operating permit” defined. (NRS 445B.210, 445B.300) “Operating permit” has the meaning ascribed to it in NRS 445B.145. Unless otherwise specifically stated, the term includes: 1. A Class I and a Class II operating permit; 2. An operating permit to construct; and 3. …

NAC 445B.124 “Operating permit to construct” defined. (NRS 445B.210) “Operating permit to construct” means an operating permit signed and issued by the Director which: 1. Authorizes the construction and an initial period of operation of a proposed new Class I stationary source or…

NAC 445B.125 “Ore” defined. (NRS 445B.210) “Ore” means a natural combination of minerals from which a metal can be extracted. [Environmental Comm’n, Air Quality Reg. Art. 1 § 3, eff. 11-17-78]—(Substituted in revision for NAC 445.560)

NAC 445B.127 “Owner or operator” defined. (NRS 445B.210) “Owner or operator” means any person who owns, leases, operates, controls or supervises an affected facility or a stationary source of which an affected facility is a part. [Environmental Comm’n, Air Quality Reg. § 1.123, e…

NAC 445B.129 “Particulate matter” defined. (NRS 445B.210) “Particulate matter” means any material except uncombined water that exists in a finely divided form as a liquid or solid at reference conditions. [Environmental Comm’n, Air Quality Reg. § 1.47, eff. 11-7-75; renumbered as…

NAC 445B.130 “Pathological wastes” defined. (NRS 445B.210) “Pathological wastes” means human and animal remains consisting of carcasses, organs and solid organic wastes from hospitals, laboratories, abattoirs, animal pounds and similar stationary sources. [Environmental Comm’n, A…

NAC 445B.133 “Permanent” defined. (NRS 445B.210, 445B.300) “Permanent” means an emission reduction that is long-lasting and unchanging for the remaining life of the facility or project that generated the emission reduction credit. (Added to NAC by Environmental Comm’n by R054-15,…

NAC 445B.134 “Person” defined. (NRS 445B.210) “Person” has the meaning ascribed to it in NRS 0.039 and includes the State of Nevada, political subdivisions, administrative agencies and public or quasi-public corporations. [Environmental Comm’n, Air Quality Reg. § 1.49, eff. 11-7-…

NAC 445B.1345 “Plantwide applicability limitation” defined. (NRS 445B.210) “Plantwide applicability limitation” means a plantwide applicability limitation as defined in 40 C.F.R. § 52.21(aa)(2)(v) that has been approved by the Director and authorized in an operating permit to con…

NAC 445B.1348 “PM2.5” defined. (NRS 445B.210) “PM2.5” means any particulate matter in the atmosphere with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers as measured by an approved reference method or equivalent method based on 40 C.F.R. Part 50, Appendix …

NAC 445B.1349 “PM2.5 emissions” defined. (NRS 445B.210) “PM2.5 emissions” means PM2.5 emitted directly from an air emissions source or activity. The term includes gaseous emissions emitted from a source or activity that condense to form particulate matter at ambient temperatures.…

NAC 445B.135 “PM10” defined. (NRS 445B.210) “PM10” means any particulate matter in the atmosphere with an aerodynamic diameter less than or equal to a nominal 10 micrometers as measured by an approved reference method or equivalent method based on 40 C.F.R. Part 50, Appendix J an…

NAC 445B.1355 “PM10 emissions” defined. (NRS 445B.210) “PM10 emissions” means PM10 emitted directly from an air emissions source or activity. The term includes gaseous emissions emitted from a source or activity that condense to form particulate matter at ambient temperatures. (A…

NAC 445B.138 “Potential to emit” defined. (NRS 445B.210) “Potential to emit” means the maximum capacity of a stationary source to emit a regulated air pollutant under its physical and operational design. Any physical or operational limitation on the capacity of a stationary sourc…

NAC 445B.141 “Preconstruction review” defined. (NRS 445B.210, 445B.300) “Preconstruction review” means a review by the Director of all information contained in a Class I application, as required in NAC 445B.308 to 445B.313, inclusive, and 40 C.F.R. § 52.21. (Added to NAC by Envir…

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)