Nev. Admin. Code § 445B.22097
STATE STANDARDSA,B,D | ||
POLLUTANT | AVERAGING TIME | CONCENTRATIONC |
Ozone | 8 hours | 0.070 ppm |
Ozone-Lake Tahoe Basin, #90 | 1 hour | 0.10 ppm (195 µg/m3) |
Carbon monoxide less than 5,000' above mean sea level | 8 hours | 9 ppm (10,500 µg/m3) |
At or greater than 5,000' above mean sea level | 6 ppm (7,000 µg/m3) | |
Carbon monoxide at any elevation | 1 hour | 35 ppm (40,500 µg/m3) |
Nitrogen dioxide | Annual arithmetic mean | 0.053 ppm (100 µg/m3) |
1 hour | 100 ppb | |
Sulfur dioxide | Annual arithmetic mean | 0.030 ppm (80 µg/m3) |
24 hours | 0.14 ppm (365 µg/m3) | |
3 hours | 0.5 ppm (1,300 µg/m3) | |
1 hour | 75 ppb | |
Particulate matter as PM10 | 24 hours | 150 µg/m3 |
Particulate matter as PM2.5 | Annual arithmetic mean | 12.0 µg/m3 |
24 hours | 35 µg/m3 | |
Lead (Pb) | Rolling 3 mo. average | 0.15 µg/m3 |
Hydrogen sulfide | 1 hour | 0.08 ppm (112 µg/m3) E |
Notes:
Note A: The Director shall use the state standards in considering whether to issue a permit for a stationary source and shall ensure that the stationary source will not cause the state standards to be exceeded in areas where the general public has access. For the 2006 particulate matter as PM2.5 24-hour and annual standards, the 2010 nitrogen dioxide 1-hour standard and the 2010 sulfur dioxide 1-hour standard, the Director shall use the form of the standards set forth in 40 C.F.R. §§ 50.11, 50.13 and 50.17, as those provisions existed on June 23, 2014, to ensure that the state standard is no more stringent than the national ambient air quality standard in determining whether the stationary source will comply with the state standards in areas where the general public has access.
Note B: National ambient air quality standards are used in determinations of attainment or nonattainment. The form of a national ambient air quality standard is the criteria which must be satisfied for each respective concentration level of a standard for the purposes of attainment. The form for each national ambient air quality standard is set forth in 40 C.F.R. Part 50 and may be viewed at http://www.epa.gov/criteria-air-pollutants/naaqs-table [File Link Not Available] . National primary standards are the levels of air quality necessary, with an adequate margin of safety, to protect the public health. National secondary standards are the levels of air quality necessary to protect the public welfare from any known or anticipated adverse effects of a regulated air pollutant.
Note C: Where applicable, concentration is expressed first in units in which it was adopted. Measurements of air quality that are expressed as mass per unit volume, such as micrograms per cubic meter, must be corrected to a reference temperature of 25 degrees Centigrade and a reference pressure of 760 mm of Hg (1,013.2 millibars), except measurements of particulate matter as PM2.5 and lead (Pb), which are calculated in micrograms per cubic meter at local conditions; "ppb" in this table refers to parts per billion by volume, or nanomoles of regulated air pollutant per mole of gas; "ppm" refers to parts per million by volume, or micromoles of regulated air pollutant per mole of gas; "µg/m3" refers to micrograms per cubic meter.
Note D: Any reference method or equivalent method designated in accordance with 40 C.F.R. Part 53 may be used to measure a regulated air pollutant.
Note E: The state ambient air quality standard for hydrogen sulfide does not include naturally occurring background concentrations.
Nev. Admin. Code § 445B.22097