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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 160. Regulation for General Conformity
12/31/2024

9VAC5-160-180. Mitigation of air quality impacts.

A. Any measures that are intended to mitigate air quality impacts 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.

B. Prior to determining that a federal action is in conformity, the federal agency making the conformity determination shall obtain written commitments from the appropriate persons or agencies to implement any mitigation measures which are identified as conditions for making conformity decisions. The written commitment shall describe the mitigation measures and the nature of the commitment, in a manner consistent with subsection A of this section.

C. Persons or agencies voluntarily committing to mitigation measures to facilitate positive conformity determinations shall comply with the obligations of the commitments.

D. In instances where the federal agency is licensing, permitting, or otherwise approving the action of another governmental or private entity, approval by the federal agency shall be conditioned on the other entity meeting the mitigation measures set forth in the conformity determination as provided in subsection A of this section.

E. When necessary because of changed circumstances, mitigation measures may be modified so long as the new mitigation measures continue to support the conformity determination. Any proposed change in the mitigation measures is subject to the reporting requirements of 9VAC5-160-130 and the public participation requirements of 9VAC5-160-140.

F. Written comments to mitigation measures shall be obtained prior to a positive conformity determination, and such commitments shall be fulfilled.

G. After EPA approves this regulation, any agreements, including mitigation measures, necessary for a conformity determination shall be both state and federally enforceable. Enforceability through the applicable implementation plan shall apply to all persons who agree to mitigate direct and indirect emissions associated with a federal action for a conformity determination.

Statutory Authority

§ 10.1-1308 of the Code of Virginia.

Historical Notes

Derived from Virginia Register Volume 12, Issue 26, eff. January 1, 1997; amended, Virginia Register Volume 27, Issue 11, eff. March 2, 2011.

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