PDEQ Supplemental Proposed Expedited Air Quality Rulemaking – Public Comment Period ExtendedPima County Department of Environmental Quality (PDEQ) is extending the public comment period for a rulemaking that proposes to amend various parts of Pima County Air Pollution Regulations (Title 17).The Board of Supervisors vote will be moved from May 12th to July 28th , 2026 at 5pm or later, at 130 W. Congress St., Tucson, AZ 85701; the proposed rule will become effective on the same day if approved. The supplemental public comment period will run from May 8th, 2026 until June 12th, 2026. An oral proceeding has been scheduled for June 8th, 2026 at 2pm online via Microsoft Teams (Meeting information available at www.pima.gov/415 [http://www.pima.gov/415]).The proposed rulemaking would update incorporations by reference to the Code of Federal Regulations. The federal regulations include New Source Performance Standards (NSPS), National Emission Standards for Hazardous Air Pollutants (NESHAP), and Acid Rain Regulations. The U.S. Environmental Protection Agency (EPA) codifies revisions made to these federal regulations every year on July 1 for the previous year. The purpose of this rulemaking is to incorporate by reference the applicable federal regulations as codified on July 1, 2025. This is necessary for Pima County to remain in continued compliance with its delegated authority from the EPA to implement and enforce the NSPS, NESHAP, and acid rain programs in Pima County. The proposed changes are mandated by federal law and are required annually.Additional information, including the full Notice of Supplemental Proposed Expedited Rulemaking, text of the proposed rule, oral proceeding information, and form to submit public comments is available at www.pima.gov/415 . Documents can also be accessed in person at PDEQ at 33 N. Stone Ave., Ste 700, Tucson, AZ 85701. Questions can be directed to PDEQ Rules Manager Abigail Okrent at 520-724-7400 or abigail.okrent@pima.gov or to sarah.hite@pima.gov .To stay up to date with information regarding this rulemaking, and PDEQ's other activities, please continue to check PDEQ's website and subscribe to the PDEQ Newsletter .PDEQ does not discriminate on the basis of race, color, sex, national origin (including limited English proficiency), age, or disability. If you need assistance in another language or any modifications to make our services more accessible to you, please contact us at CivilRights.PDEQ@pima.gov or 520-724-7400.PDEQ no discrimina por motivos de raza, color, sexo, origen nacional (incluido idioma), edad o discapacidad. Si necesita ayuda en otro idioma o alguna modificacion para que nuestros servicios sean mas accesibles, comuniquese con nosotros a CivilRights.PDEQ@pima.gov o al 520-724-7400.Publish: The Daily TerritorialDate: May 8 and 15, 2026DTT013526
