Virginia Administrative Code
Title 9 - ENVIRONMENT
Agency 5 - STATE AIR POLLUTION CONTROL BOARD
Chapter 160 - Regulation for General Conformity
Part II - General Provisions
Section 9VAC5-160-30 - Applicability
Current through Register Vol. 41, No. 3, September 23, 2024
A. The provisions of this chapter shall apply in all nonattainment and maintenance areas for criteria pollutants for which the area is designated nonattainment or has a maintenance plan. Conformity requirements for newly designated nonattainment areas are not applicable until one year after the effective date of the final nonattainment designation for each national ambient air quality standard and pollutant in accordance with § 176(c)(6) of the federal Clean Air Act.
B. The provisions of this chapter apply with respect to emissions of the following criteria pollutants: ozone, carbon monoxide, nitrogen dioxide, particles with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM10), and particles with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers (PM2.5).
C. The provisions of this chapter apply with respect to emissions of the following precursor pollutants:
D. Conformity determinations for federal actions related to transportation plans, programs, and projects developed, funded, or approved under Title 23 USC or the Federal Transit Act ( 49 USC § 5301 et seq.) shall meet the procedures and criteria of 9VAC5-151 (Regulation for Transportation Conformity), in lieu of the procedures set forth in this chapter.
E. For federal actions not covered by subsection D of this section, a conformity determination is required for each criteria pollutant or precursor where the total of direct and indirect emissions of the criteria pollutant or precursor in a nonattainment or maintenance area caused by a federal action would equal or exceed any of the rates in subdivision 1 or 2 of this subsection.
Tons per year |
|
Ozone (VOCs or NOX): |
|
Serious nonattainment areas |
50 |
Severe nonattainment areas |
25 |
Extreme nonattainment areas |
10 |
Other ozone nonattainment areas outside an ozone transport region |
100 |
Other ozone nonattainment areas inside an ozone transport region: |
|
VOC |
50 |
NOX |
100 |
Carbon monoxide, all nonattainment areas |
100 |
Sulfur dioxide or nitrogen dioxide, all nonattainment areas |
100 |
PM10: |
|
Moderate nonattainment areas |
100 |
Serious nonattainment areas |
70 |
PM2.5 (direct emissions, SO2, NOX, VOC, and ammonia): |
|
Moderate nonattainment areas |
100 |
Serious nonattainment areas |
70 |
Lead, all nonattainment areas |
25 |
Tons per year |
|
Ozone (NOx), sulfur dioxide, or nitrogen dioxide, all maintenance areas |
100 |
Ozone (VOCs): |
|
Maintenance areas inside an ozone transport region |
50 |
Maintenance areas outside an ozone transport region |
100 |
Carbon monoxide, all maintenance areas |
100 |
PM10, all maintenance areas |
100 |
PM2.5 (direct emissions, SO2, NOX, VOC, and ammonia): |
100 |
All maintenance areas |
100 |
Lead, all maintenance areas |
25 |
F. The requirements of this section shall not apply to the following federal actions:
G. Notwithstanding the other requirements of this section, a conformity determination is not required for the following federal actions or portions thereof:
H. Federal actions that are part of a continuing response to an emergency or disaster under subdivision G 2 of this section and that are to be taken more than six months after the commencement of the response to the emergency or disaster under subdivision G 2 of this section are exempt from the requirements of this subsection only if:
I. Notwithstanding other requirements of this chapter, actions specified by individual federal agencies that have met the criteria set forth in subdivision J 1, J 2, or J 3 of this section and the procedures set forth in subsection K of this section are presumed to conform, except as provided in subsection M of this section. Actions specified by individual federal agencies as presumed to conform shall not be used in combination with one another when the total direct and indirect emissions from the combination of actions would equal or exceed any of the rates specified in subdivision E 1 or E 2 of this section.
J. The federal agency shall meet the criteria for establishing activities that are presumed to conform by fulfilling the requirements set forth in either subdivision 1, 2, or 3 of this subsection.
K. In addition to meeting the criteria for establishing exemptions set forth in subdivision J 1, J 2, or J 3 of this section, the following procedures shall also be complied with to presume that activities shall conform:
L. Emissions from the following actions are presumed to conform:
M. Even though an action would otherwise be presumed to conform under subsection I or L of this section, an action shall not be presumed to conform and the requirements of 9VAC5-160-110 through 9VAC5-160-180, 9VAC5-160-182 through 9VAC5-160-184, and 9VAC5-160-190 shall apply to the action if EPA or a third party shows that the action would:
N. Any measures used to affect or determine applicability of this chapter, as determined under this section, shall result in projects that are in fact de minimis, shall result in the de minimis levels prior to the time the applicability determination is made, and shall be state or federally enforceable. Any measures that are intended to reduce air quality impacts for this purpose shall be identified (including the identification and quantification of all emission reductions claimed) and the process for implementation (including any necessary funding of the measures and tracking of the emission reductions) and enforcement of the measures shall be described, including an implementation schedule containing explicit timelines for implementation. Prior to a determination of applicability, the federal agency making the determination shall obtain written commitments from the appropriate persons or agencies to implement any measures which are identified as conditions for making the determinations. The written commitment shall describe the mitigation measures and the nature of the commitment, in a manner consistent with the previous sentence. After this regulation is approved by EPA, enforceability through the applicable implementation plan of any measures necessary for a determination of applicability shall apply to all persons who agree to reduce direct and indirect emissions associated with a federal action for a conformity applicability determination.
Statutory Authority: § 10.1-1308 of the Code of Virginia; §§ 108, 109, 182, and 302 of the Clean Air Act; 40 CFR Parts 50, 53, and 58.