The burden for demonstrating that these conditions are met is upon the permit applicant. The demonstration and the Technical Secretary's approval will be made a part of the permit record.
The burden for demonstrating that these conditions are met is upon the permit applicant. The demonstration and the Technical Secretary's approval will be made a part of the permit record.
Technical Secretary determines that a complete and adequate analysis can be accomplished with monitoring data over a shorter period (not to be less than 4 months), the data that subpart (ii) of this part requires shall have been gathered over that shorter period.
MAXIMUM ALLOWABLE INCREASE
(Micrograms per cubic meter)
Class I | |
Pollutant | µg/m3 |
PM2.5: | |
Annual arithmetic mean | 1 |
24-hour maximum | 2 |
PM10: | |
PM-10, Annual arithmetic mean | 4 |
PM-10, 24-hour maximum | 8 |
Sulfur dioxide: | |
Annual arithmetic mean | 2 |
24-hour maximum | 5 |
3-hour maximum | 25 |
Nitrogen dioxide: | |
Annual arithmetic mean | 2.5 |
Class II | |
PM2.5: | |
Annual arithmetic mean | 4 |
24-hour maximum | 9 |
PM10: | |
Annual arithmetic mean | 17 |
24-hour maximum | 30 |
Sulfur dioxide: | |
Annual arithmetic mean | 20 |
24-hour maximum | 91 |
3-hour maximum | 512 |
Nitrogen dioxide: | |
Annual arithmetic mean | 25 |
Class III | |
PM2.5: | |
Annual arithmetic mean | 8 |
24-hour maximum | 18 |
PM10: | |
Annual arithmetic mean | 34 |
24-hour maximum | 60 |
Sulfur dioxide: | |
Annual arithmetic mean | 40 |
24-hour maximum | 182 |
3-hour maximum | 700 |
Nitrogen dioxide: | |
Annual arithmetic mean | 50 |
For any period other than an annual period, the applicable maximum allowable increase may be exceeded during one such period per year at any one location.
As required under this paragraph, all estimates of ambient concentrations shall be based on applicable air quality models and databases acceptable to the Technical Secretary and meeting the requirements specified in 40 CFR Part 51 Appendix W. The provisions of 40 CFR Part 51 Appendix W are hereby adopted by reference as published in the July 1, 2019 edition of the Code of Federal Regulations (CFR). Where an air quality impact model specified in 40 CFR Part 51 Appendix W is inappropriate, the Technical Secretary may approve use of a modified model or substituted model after consultation with the EPA Administrator. The use of a modified or substituted model must be subject to notice and opportunity for public comment under procedures developed in accordance with subparagraph (l) of this paragraph.
The Technical Secretary shall not issue a construction permit to a source or facility to construct in an area where the increment is known to be violated or the air quality review predicts a violation of the increment or the ambient air quality standards except in accordance with the following:
Pollutant | Annual | 24 hour | 8 hour | 3 hour | 1 hour |
PM10 | 1 | 5 | |||
Sulfur Dioxide | 1 | 5 | 25 | ||
Carbon Monoxide | 500 | 2000 | |||
Nitrogen Dioxide | 1 |
(Levels are in units of micrograms per cubic meter.)
The Technical Secretary shall promptly provide written notice of receipt of any permit application for a proposed major stationary source or major modification, the emissions from which may affect a Class I area or which may have an adverse impact on visibility in any Class I area to the EPA Administrator, the Federal Land Manager, and the Federal official charged with direct responsibility for management of any lands within any such area. The Technical Secretary shall transmit to the EPA Administrator and the Federal Land Manager a copy of each permit application relating to a major stationary source or major modification which would affect a Class I area. This application shall include a copy of all information relevant to the permit application and shall be given within 30 days of receipt of the permit application, and at least 60 days prior to any public hearing on the application for a permit to construct. Such notification shall include an analysis of the proposed source's anticipated impacts on visibility in the Federal Class I area. The Technical Secretary shall also provide the EPA Administrator, the Federal Land Manager and such Federal officials with a copy of the preliminary determination and shall make available to them any materials used in making that determination promptly after the Technical Secretary makes it. In addition, notification of public hearings, final determinations, and permits issued shall be provided. Finally, the Technical Secretary shall also notify all affected Federal Land Managers within 30 days of receipt of any advance notification of any such permit application.
The Federal Land Manager of any such lands may demonstrate to the Technical Secretary that the emissions from a proposed source or modification would have an adverse impact on the air quality-related values (including visibility) of those lands, notwithstanding that the change in air quality resulting from emissions from such source or modification would not cause or contribute to concentrations which would exceed the maximum allowable increases for a Class I area. If the Technical Secretary concurs with such demonstration, then he shall not issue the permit.
The owner or operator of a proposed source or modification may demonstrate to the Federal Land Manager that the emissions from such source or modification would have no adverse impact on the air quality related values of any such lands (including visibility), notwithstanding that the change in air quality resulting from emissions from such source or modification would cause or contribute to concentrations which would exceed the maximum allowable increases for a Class I area. If the Federal Land Manager concurs with such demonstration and he so certifies, the Technical Secretary, provided that the applicable requirements of this paragraph are otherwise met, may issue the permit with such emission limitations as may be necessary as approved by the Tennessee Air Pollution Control Board to assure that emissions of sulfur dioxide, PM2.5, PM10, and nitrogen oxides would not exceed the following maximum allowable increases over baseline concentration for such pollutants:
Pollutant | Maximum Allowable Increase µg/m3 |
PM2.5: | |
Annual arithmetic mean | 4 |
24-hr maximum | 9 |
PM10: | |
Annual arithmetic mean | 17 |
24-hr maximum | 30 |
Sulfur dioxide: | |
Annual arithmetic mean | 20 |
24-hr maximum | 91 |
3-hr maximum | 325 |
Nitrogen dioxide: | |
Annual arithmetic mean | 25 |
The Technical Secretary shall consider any analysis performed by the Federal Land Manager, provided to the Technical Secretary within 30 days of the notification and analysis required in part 1. of this subparagraph, that a proposed new major stationary source or major modification may have an adverse impact on visibility in any Federal Class I area. If the Technical Secretary concurs with the analysis then he shall not issue the permit. Where the Technical Secretary finds that such an analysis does not demonstrate to the satisfaction of the Technical Secretary that an adverse impact on visibility will result in the Federal Class I area, the Technical Secretary must, in the notice of public hearing on the permit application, either explain his decision or give notice as to where the explanation can be obtained.
The Technical Secretary shall not grant a permit for the construction or modification of any air contaminant source in an attainment or unclassified area if such construction or modification will interfere with the maintenance of an air quality standard or PSD increment where applicable, or will violate any provisions of the Tennessee Air Quality Act, or section 165(a)(3) of the Clean Air Act, Amendments of 1990.
"Commence construction" as applied to a major stationary source or major modification means that the owner or operator has all necessary construction permits and either has begun, or caused to begin, a continuous program of actual on-site construction of the stationary source, to be completed within a reasonable time; or entered into binding agreements or contractual obligations, which cannot be canceled or modified without substantial loss to the owner or operator, to undertake a program of actual construction of the stationary source to be completed within a reasonable time.
Pollutant | Annual | Averaging Time (hours) | |||
24 | 8 | 3 | 1 | ||
SO2 | 1.0 µg/m3 | 5 µg/m3 | 25 µg/m3 | ||
PM10 | 1.0 µg/m3 | 5 µg/m3 | |||
PM2.5 | 0.3 µg/m3 | 1.2 µg/m3 | |||
NO2 | 1.0 µg/m3 | ||||
CO | 0.5 mg/m3 | 2 mg/m3 |
(GEP) Stack height means the greater of:
Hg = 2.5 H,
provided the owner or operator produces evidence that this equation was actually relied on in establishing an emission limitation;
Hg = H + 1. 5L
where
Hg = good engineering practice stack height, measured from the ground-level elevation at the base of the stack. This is the height at which structural downwash no longer influences computer modeled ambient impacts.
H = height of nearby structure(s) measured from the ground-level elevation at the base of the stack.
L = lesser dimension, height or projected width, of nearby structure(s)
provided that the Technical Secretary may require the use of a field study or fluid model to verify GEP stack height for the source; or
The burden for demonstrating that these conditions are met is upon the permit applicant. The demonstration and the Technical Secretary's approval will be made a part of the permit record.
The burden for demonstrating that these conditions are met is upon the permit applicant. The demonstration and the Technical Secretary's approval will be made a part of the permit record.
The requirements of this subparagraph shall apply to any new stationary source or major modification that is major for a regulated NSR pollutant, or precursor to a regulated NSR pollutant as applicable, if the stationary source or modification would be constructed anywhere in an area designated nonattainment (as of the date of the permit issued in accordance with this subparagraph) for such pollutant pursuant to the Clean Air Act Title I Part A Section 107(d).
The requirements of this subparagraph shall apply to each nonattainment pollutant (and in some cases each precursor to the nonattainment pollutant) that the source will emit, or will have the potential to emit, in major amounts. In the case of a modification, the requirements shall apply to the significant net emissions increase of each nonattainment pollutant (and each precursor to the nonattainment pollutant, as applicable) for which the source is major.
The owner or operator of a source shall provide an analysis of the impairment to visibility that would occur as a result of the source or modification and general commercial, residential, industrial and other growth associated with the source or modification.
The Technical Secretary shall only issue permits to those sources whose emissions will be consistent with making reasonable further progress toward the national goal of preventing any future, and remedying any existing, impairment of visibility in visibility protection areas in which impairment results from man-made air pollution. In making the decision to issue a permit the Technical Secretary may take into account the costs of compliance, the time necessary for compliance, the energy and non-air quality environmental impacts of compliance, and the useful life of the source.
The Technical Secretary may require monitoring of visibility in any visibility protection area near the proposed new stationary source or major modification for such purposes and by such means as the Technical Secretary deems necessary and appropriate.
Tenn. Comp. R. & Regs. 1200-03-09-.01
Authority: T.C.A. §§ 4-5-201, et seq. and 68-201-101, et seq.