CHAPTER 445B - AIR CONTROLS

NAC 445B.2204 “Sulfur emission” defined. (NRS 445B.210) For purposes of NAC 445B.2204 to 445B.22063, inclusive, “sulfur emission” means the sulfur portion of the sulfur compounds emitted. [Environmental Comm’n, Air Quality Reg. § 8.2.2.4, eff. 11-7-75; renumbered as § 8.2.4, 12-4…

NAC 445B.22043 Sulfur emissions: Calculation of total feed sulfur. (NRS 445B.210) For the purposes of NAC 445B.2204 to 445B.2205, inclusive, total feed sulfur must be calculated as the aggregate sulfur content of all fuels and other feed materials whose products of combustion and…

NAC 445B.22047 Sulfur emissions: Fuel-burning equipment. (NRS 445B.210) 1. No person may cause or permit the emission of compounds of sulfur caused by the combustion of fuel in fuel-burning equipment in excess of the quantity calculated by the use of the formula in subsection 2 o…

NAC 445B.2205 Sulfur emissions: Other processes which emit sulfur. (NRS 445B.210, 445B.300) 1. No person may cause or permit the emission of sulfur compounds where the sulfur originates in the material being processed, excluding hydrogen sulfide and sulfur from all solid, liquid …

NAC 445B.22057 Allowable emissions of sulfur from specific sources: Units Numbers 1, 2 and 3 of Reid Gardner Power Station. (NRS 445B.210) The allowable emission of sulfur from fossil fuel-fired power generating units Numbers 1, 2 and 3 of NV Energy’s Reid Gardner Station, locate…

NAC 445B.2206 Allowable emissions of sulfur from specific sources: Unit Number 4 of Reid Gardner Power Station. (NRS 445B.210) The allowable emission of sulfur from fossil fuel-fired power generating unit Number 4 of NV Energy’s Reid Gardner Station, located in Air Quality Contro…

NAC 445B.22063 Allowable emissions of sulfur from specific sources: North Valmy Power Station. (NRS 445B.210) The allowable emission of sulfur from fossil fuel-fired power generating unit Number 2 NV Energy’s North Valmy Station, located in Air Quality Control Region 147, Basin 6…

NAC 445B.22067 Open burning. (NRS 445B.210) 1. The open burning of any combustible refuse, waste, garbage or oil, or for any salvage operations, except as specifically exempted, is prohibited. 2. Open burning: (a) For the purpose of weed abatement, conservation, disease control, …

NAC 445B.2207 Incinerator burning. (NRS 445B.210) 1. Except as otherwise provided in subsection 6: (a) Burning in any incinerator other than the multiple-chamber type is prohibited. (b) Incinerator burning which produces, for periods totaling 1 minute in 1 hour, a visible emissio…

NAC 445B.22073 Municipal solid waste landfills. (NRS 445B.210) 1. Except as otherwise provided in subsections 2 and 3, a municipal solid waste landfill must: (a) Install a system designed to collect and control the emission of nonmethane organic compounds not later than 30 months…

NAC 445B.22077 Compliance with regulations. (NRS 445B.210) Any portion of any affected facility not listed in NAC 445B.2208 must comply with the remaining portions of NAC 445B.001 to 445B.390, inclusive. [Environmental Comm’n, Air Quality Reg. Art. 16, eff. 12-4-76]—(NAC A 3-17-8…

NAC 445B.2208 Emission of hydrogen sulfide from certain facilities for generating electricity from geothermal brine. (NRS 445B.210) The emission of hydrogen sulfide from the facilities for generating electricity from geothermal brine at the Oxbow Geothermal Corporation’s geotherm…

NAC 445B.22083 Construction, major modification or relocation of plants to generate electricity using steam produced by burning of fossil fuels. (NRS 445B.210) 1. Except as otherwise provided in subsections 2 and 3, a person shall not make a major modification to an existing plan…

NAC 445B.22087 Odors. (NRS 445B.210) 1. No person may discharge or cause to be discharged, from any stationary source, any material or regulated air pollutant which is or tends to be offensive to the senses, injurious or detrimental to health and safety, or which in any way inter…

NAC 445B.2209 Reduction of animal matter. (NRS 445B.210) 1. The operation of any machine, equipment or other contrivance for the reduction of animal matter is prohibited unless all gases, vapors and gas-entrained effluents are: (a) Incinerated at temperatures of not less than 140…

NAC 445B.22093 Organic solvents and other volatile compounds. (NRS 445B.210) 1. Solvents or other volatile compounds such as paints, acids, alkalies, pesticides, fertilizers and manure must be processed, stored, used and transported in such a manner and by such means as to minimi…

NAC 445B.22095 Emission limitation for BART. (NRS 445B.210) The emission limitation for BART must be established on a case-by-case basis, taking into consideration: 1. The technology available; 2. The costs of compliance; 3. The energy and nonair quality environmental impacts of …

NAC 445B.22096 Control measures constituting BART; limitations on emissions. (NRS 445B.210) 1. The sources listed below must install, operate and maintain the following control measures which constitute BART and must not emit or cause to be emitted NOx, SO2, or PM10 in excess of …

NAC 445B.220965 Control measures to make reasonable progress towards achieving natural visibility conditions; limitations on NOx emissions. (NRS 445B.210) 1. In establishing the emission limits, schedules of compliance and other measures set forth in this section to make reasonab…

NAC 445B.22097 State standards of quality for ambient air. (NRS 445B.210) 1. The table contained in this section lists the minimum state standards of quality for ambient air. STATE STANDARDSA, B, D POLLUTANT AVERAGING TIME CONCENTRATIONC Ozone 8 hours 0.070 ppm Ozone-Lake Tahoe B…

NAC 445B.22098 Notification of public of certain information related to state standards of quality for ambient air. (NRS 445B.210) The Director shall: 1. Each time any state standard of quality for ambient air established pursuant to NAC 445B.22097 is exceeded, notify the public …

NAC 445B.221 Adoption by reference and applicability of certain provisions of federal law and regulations. (NRS 445B.210) 1. Title 40 C.F.R. §§ 51.100(s), 51.100(nn) and 51.301 and Appendix S of 40 C.F.R. Part 51 are hereby adopted by reference as they existed on July 1, 2023. 2.…

NAC 445B.224 Public and confidential information. (NRS 445B.210, 445B.570) 1. The Director shall maintain all public information obtained in the course of the performance of the duties set forth in NRS 445B.100 to 445B.845, inclusive, at 901 South Stewart Street, Suite 4001, Cars…

NAC 445B.225 Prohibited conduct: Concealment of emissions. (NRS 445B.210) No person may install, construct or use any device which conceals any emission without reducing the total release of regulated air pollutants to the atmosphere. [Environmental Comm’n, Air Quality Reg. § 2.2…

NAC 445B.227 Prohibited conduct: Operation of source without required equipment; removal or modification of required equipment; modification of required procedure. (NRS 445B.210, 445B.300) Except as otherwise provided in NAC 445B.001 to 445B.390, inclusive, no person may: 1. Oper…

NAC 445B.229 Hazardous emissions: Order for reduction or discontinuance. (NRS 445B.210, 445B.450) Without limiting the authority of any state officer to declare or to act on an emergency, the Director or local air pollution control agency, upon determining that a generalized cond…

NAC 445B.230 Plan for reduction of emissions. (NRS 445B.210, 445B.560) 1. Any person who is able to cause or permit the emission of 100 tons (90.7 metric tons) or more per year of a regulated air pollutant, except for greenhouse gas emissions, from a stationary source shall prepa…

NAC 445B.232 Excess emissions: Scheduled maintenance, testing or repairs; notification of Director; malfunction, upset, start-up, shutdown or human error. (NRS 445B.210) 1. Scheduled maintenance or testing or scheduled repairs which may result in excess emissions of regulated air…

NAC 445B.233 Excess emissions: Determination of violation. (NRS 445B.210, 445B.300) 1. The Director shall determine from the submission of data and information required in subsection 5 of NAC 445B.232 or other information available to him or her that no violation occurred if: (a)…

NAC 445B.235 Construction or modification: Determination by Director. (NRS 445B.210) 1. When requested to do so by an owner or operator, the Director will make a determination of whether action taken or intended to be taken by the owner or operator constitutes construction, inclu…

NAC 445B.236 Construction or modification: Review of plans. (NRS 445B.210) 1. When requested to do so by an owner or operator, the Director will review plans for construction or modification to provide technical advice to the owner or operator. A separate request must be submitte…

NAC 445B.239 Modification: Rate of emission. (NRS 445B.210) 1. The rate of emission must be expressed in pounds per hour of any regulated air pollutant discharged into the atmosphere for which a standard is applicable. The Director shall use the following to determine the rate of…

NAC 445B.242 Modification: Alterations which are not considered modifications. (NRS 445B.210) The following are not by themselves considered modifications under NAC 445B.235 to 445B.250, inclusive: 1. Maintenance, repair and replacement which the Director determines to be routine…

NAC 445B.247 Reconstruction: Notice of replacement of components. (NRS 445B.210, 445B.300) 1. As used in NAC 445B.248 and 445B.250 and this section: (a) “Reconstruction” means the replacement of components of an existing facility to such an extent that: (1) The fixed capital cost…

NAC 445B.248 Reconstruction: Determination of whether replacement constitutes reconstruction. (NRS 445B.210, 445B.300) 1. The Director will determine, within 30 days of the receipt of the notice required by subsection 2 of NAC 445B.247 and any additional information he or she may…

NAC 445B.250 Notification of Director: Construction, reconstruction and initial start-up; demonstration of continuous monitoring system performance. (NRS 445B.210, 445B.300) Any owner or operator subject to the provisions of NAC 445B.001 to 445B.390, inclusive, shall furnish the …

NAC 445B.252 Testing and sampling. (NRS 445B.210, 445B.225, 445B.300) 1. To determine compliance with NAC 445B.001 to 445B.390, inclusive, before the approval or the continuance of an operating permit or similar class of permits, the Director may either conduct or order the owner…

NAC 445B.255 Monitoring guidelines. (NRS 445B.210, 445B.225) The Division may establish guidelines for monitoring a stationary source. (Added to NAC by Environmental Comm’n by R019-99, eff. 9-27-99)

NAC 445B.256 Monitoring systems: Calibration, operation and maintenance of equipment. (NRS 445B.210, 445B.225) The owners or operators of all stationary sources identified in Appendix P of 40 C.F.R. § 51(1.1) as amended from time to time, are required to install, calibrate, opera…

NAC 445B.257 Monitoring systems: Location. (NRS 445B.210, 445B.225) 1. All continuous monitoring systems or monitoring devices must be installed so that representative measurements of emissions or process parameters from the affected facility are obtained. Additional procedures f…

NAC 445B.258 Monitoring systems: Verification of operational status. (NRS 445B.210, 445B.225) 1. Unless otherwise approved by the Director or specified in NAC 445B.001 to 445B.390, inclusive, the requirements of this section apply to all continuous monitoring systems required und…

NAC 445B.259 Monitoring systems: Performance evaluations. (NRS 445B.210, 445B.225) 1. During any performance tests required under NAC 445B.252 or within 30 days thereafter and at such other times as may be required by the Director under § 114 of the Act, the owner or operator of …

NAC 445B.260 Monitoring systems: Components contracted for before September 11, 1974. (NRS 445B.210, 445B.225) 1. Except as otherwise provided in subsection 2, an owner or operator who, before September 11, 1974, entered into a binding contractual obligation to purchase specific …

NAC 445B.261 Monitoring systems: Adjustments. (NRS 445B.210, 445B.225) Owners or operators of all continuous monitoring systems installed in accordance with the provisions of NAC 445B.256 to 445B.267, inclusive, shall check the zero and span drift at least once daily in accordanc…

NAC 445B.262 Monitoring systems: Measurement of opacity. (NRS 445B.210, 445B.225) 1. For continuous monitoring systems measuring opacity of emissions, the optical surfaces exposed to the effluent gases must be cleaned before performing the zero or span drift adjustments, except t…

NAC 445B.263 Monitoring systems: Frequency of operation. (NRS 445B.210, 445B.225) Except for system breakdowns, repairs, calibration checks, and zero and span adjustments required by NAC 445B.261, all continuous monitoring systems must be in continuous operation and meet minimum …

NAC 445B.264 Monitoring systems: Recordation of data. (NRS 445B.210, 445B.225) 1. Owners or operators of all continuous monitoring systems for the measurement of opacity shall reduce all data to 6-minute averages and for systems other than opacity to 1-hour averages. 2. For syste…