Section 1200-03-03-.03 - TENNESSEE'S AMBIENT AIR QUALITY STANDARDS(1) Ambient air quality standards as given in this rule are applicable throughout Tennessee. (a) TENNESSEE AMBIENT AIR QUALITY STANDARDS for Total Suspended Particulates TSP), PM10, Sulfur Dioxide, Carbon Monoxide, Ozone, Nitrogen Dioxide, and Lead. Table I
ug/m 3 - Micrograms per cubic meter AAM - Annual arithmetic mean
| Contaminants | Primary Standard | Averaging Interval | Secondary Standard Concentration | Averaging Interval |
| 1. Total Suspended Particulates (TSP) (Note 1) | ug/m3 | ppm by vol. - - | | ug/m3 150 | ppm by vol. - - | 24 hr. |
| 2. PM10 (Note 2) | 50 150 | | AAM 24 hr. | 50 150 | | AAM 24 hr. |
| 3. Sulfur Dioxide | 80 365 | 0.03 0.14 | AAM 24 hr. | 1,300 | 0.5 | 3 hr. |
| 4. Carbon Monoxide | 10,000 40,000 | 9.0 35.0 | 8 hr. 1 hr. | 10,000 40,000 | 9.0 35.0 | 8 hr. 1 hr. |
| 5. Ozone (Note 3) | 235 | 0.12 | 1 hr. | 235 | 0.12 | 1 hr. |
| 6. Nitrogen Dioxide | 100 | 0.05 | AAM | 100 | 0.05 | AAM |
| 7. Lead | 1.5 | | Calendar quarter | 1.5 | | Calendar quarter |
All values other than annual values are maximum concentrations, not to be exceeded more than once per year (except for lead). For lead, the first exceedance is considered a violation of the standard. Parts per million (PPM) values are approximate only. All concentrations relate to air at standard conditions of 25 degrees centigrade temperature and 760 millimeters mercury pressure.
Note:
1. The value of 150 ug/m3 for a 24-hour averaging interval is maintained as a guide to be used in assessing particulate problem areas. In those areas where it is exceeded, PM-10 monitoring will be required, unless it is determined that the data is biased by an activity or event such as short term construction. Such monitor(s) shall be operated for a least a period of one calendar year (i.e., January 1 through December 31) following the federally designated six day sampling schedule. In any area where a single air contaminant source is the predominant particulate emitter the Technical Secretary shall order the source to install and operate said PM-10 monitoring network. In other areas the Technical Secretary shall be responsible for insuring that said monitoring is accomplished.2. The 24-hour guideline is attained when the expected number of days per calendar year with maximum hourly concentration above 0.12 ppm(235 ug/m3) is equal to or less than 1 as determined by the Federal Register, Volume 44, No. 28, February 8, 1979, Part V, Appendix H.3. The standard is attained when the expected number of days per calendar year with maximum hourly concentration above 150 ug/m3, as determined by Appendix K in Federal Register, Volume 52, No. 126, July 1, 1987, is equal to or less than one.(b) Tennessee Ambient Air Quality Standards for Gaseous Fluorides Expressed as HF. Sources that emit gaseous fluorides, including hydrogen fluoride, and that are within a source category (including sources that would otherwise be included in the source category but fall below emissions or size thresholds for the source category) for which the United States Environmental Protection Agency has promulgated standards under section 112 of the Clean Air Act are deemed to be in compliance with any requirements under this section if they meet any and all applicable requirements of the federal standards. This subparagraph is not applicable to sources subject to 40 CFR 63, Subpart LL. Table II
Secondary Standards
| Concentration ppb | Averaging |
| ug/m3 | by vol. | Interval |
| 1.2 | 1.5 | 30 days |
| 1.6 | 2.0 | 7 days |
| 2.9 | 3.5 | 24 hrs. |
| 3.7 | 4.5 | 12 hrs. |
NOTE: All values are maximum not to be exceeded more than once per year. Concentrations in micrograms per cubic meter (ug/m3) are approximate only. All conditions relate to air at standard conditions of 25° C temperature and 760 millimeters of mercury pressure. All averaging intervals are consecutive time periods.
(c) A hydrogen chloride (expressed as HCL) value of 70.0 ug/m3 HCL, 24-hour average, shall be used as a guidance level in assessing air quality impact, excluding the burning of fossil fuels.(d) Tennessee Ambient Air Quality Standards for Gaseous Fluorides expressed as HF in the vicinity of Primary Aluminum Reduction Plants in operation on or before December 31, 1973. Table III
Secondary Standard
| Concentration ppb | Averaging Interval |
| ug/m3 | by vol. | |
| 0.5 | 0.6 | 30 days |
NOTE 1: All values are maximum not to be exceeded more than once per year. Concentrations in micrograms per cubic meter (ug/m3) are approximate only. All conditions relate to air at standard conditions of 25° Centigrade and 760 mm mercury.
NOTE 2: This standard shall be attained at a distance of 13.8 km downwind from plants in operation on or before December 31, 1973.
NOTE 3: The 30 day standard contained in Table II shall be met in the vicinity of the plant at locations designated in Note 4.
NOTE 4: Air quality sensors to monitor attainment and maintenance of these air quality standards shall be placed in the primary downwind direction from the plant at locations approved by the Technical Secretary. An air quality sensor to monitor attainment with the standard contained in Table II shall be at a location not less than 2.9 km or greater than 5.5 from the plant. An air quality sensor to monitor attainment with the standard contained in Table III shall be at a distance greater than 13.8 km from the plant.
NOTE 5: Any controls installed before the effective date of this standard, in addition to those required at Primary Aluminum Reduction Plants in operation on or before December 31, 1973, shall continue to be operated and maintained.
Tenn. Comp. R. & Regs. 1200-03-03-.03
Original rule certified June 7, 1974. Amendment filed January 10, 1977; effective February 9, 1977. Amendment filed October 2, 1979; effective November 16, 1979. Amendment filed November 5, 1984; effective December 5, 1984. Amendment filed April 18, 1990; effective June 2, 1990. Amendment filed September 7, 1993; effective November 21, 1993. Amendment filed November 30, 1993; effective February 13, 1994. Amendment filed August 10, 1995; effective October 24, 1995. Amendment filed February 20, 1997; effective May 6, 1997. Amendment to rule filed August 15, 2006; effective October 29, 2006.Authority: T.C.A. §§ 68-201-105 and 4-5-202 et. seq.