Vote — approved

Jack Sellers	yes
Thomas Galvin	yes
Bill Gates	yes
Clint Hickman	yes
Steve Gallardo	yes

Ayes: Jack Sellers, Thomas Galvin, Bill Gates, Clint Hickman, Steve Gallardo

Item Text

83. AQ-2024-006-RULE 510 (AIR QUALITY STANDARDS) Set a public hearing, as required by Arizona Revised Statutes (A.R.S.) § 49-479(b), for November 6, 2024, at 9:30 a.m. to solicit comments on incorporating the recently revised primary annual PM2.5 National Ambient Air Quality Standard (PM2.5 NAAQS) into Maricopa County Air Pollution Control Regulations, Rule 510 (Air Quality Standards) and the associated proposed revision to the Arizona State Implementation Plan (SIP). Following the public hearing, the Board is requested to adopt the proposed revision to the rule and to approve submission of the revised rule as a revision to the Arizona SIP. On February 7, 2024, the U.S. Environmental Protection Agency (EPA) revised the primary annual PM2.5 NAAQS from 12 micrograms per cubic meter (µg/m3) to 9.0 µg/m3. In response to the primary annual PM2.5 NAAQS revision, MCAQD is proposing to revise Rule 510 to incorporate the new standard of 9.0 µg/m3. The purpose of Rule 510 is to establish ambient air quality standards per § 110(a) of the Clean Air Act (CAA), which are necessary to protect human health and public welfare. The standards implemented in Rule 510 incorporate the NAAQS as codified in 40 CFR 50 “National Primary and Secondary Ambient Air Quality Standards”. States are required to submit an infrastructure SIP under Section 110(a) of the CAA that implements, maintains, and enforces new or revised NAAQS within three years of the EPA issuing the standard. Rule 510 supports the Maricopa County portion of Arizona’s infrastructure SIP. (C-85-25-014-X-00)

Attachments (1)

Vote — approved

Jack Sellers	yes
Thomas Galvin	yes
Bill Gates	yes
Clint Hickman	yes
Steve Gallardo	yes

Ayes: Jack Sellers, Thomas Galvin, Bill Gates, Clint Hickman, Steve Gallardo

Item Text

13. AQ-2024-006-RULE 510 (AIR QUALITY STANDARDS) Convene a public hearing, as required by Arizona Revised Statutes (A.R.S.) § 49-479(b), to solicit comments on incorporating the recently revised primary annual PM2.5 National Ambient Air Quality Standard (PM2.5 NAAQS) into Maricopa County Air Pollution Control Regulations, Rule 510 (Air Quality Standards) and the associated proposed revision to the Arizona State Implementation Plan (SIP). Following the public hearing, the Board is requested to adopt the proposed revision to the rule and to approve submission of the revised rule as a revision to the Arizona SIP. On February 7, 2024, the U.S. Environmental Protection Agency (EPA) revised the primary annual PM2.5 NAAQS from 12 micrograms per cubic meter (µg/m3) to 9.0 µg/m3. In response to the primary annual PM2.5 NAAQS revision, MCAQD is proposing to revise Rule 510 to incorporate the new standard of 9.0 µg/m3. The purpose of Rule 510 is to establish ambient air quality standards per § 110(a) of the Clean Air Act (CAA), which are necessary to protect human health and public welfare. The standards implemented in Rule 510 incorporate the NAAQS as codified in 40 CFR 50 “National Primary and Secondary Ambient Air Quality Standards”. States are required to submit an infrastructure SIP under Section 110(a) of the CAA that implements, maintains, and enforces new or revised NAAQS within three years of the EPA issuing the standard. Rule 510 supports the Maricopa County portion of Arizona’s infrastructure SIP. (C-85-25-014-X-01)

Attachments (1)