On Nov. 5, 2024, the comment period begins for the Arizona Regional Haze State Implementation Plan (SIP) 5-Year Progress Report for 2025. The comment period ends Dec. 5, 2024. 

Background:

The Regional Haze Rule includes two specific requirements for comprehensive periodic plan revisions and progress reviews.¹ The first provision requires states to submit a comprehensive revision every 10 years.² The second provision requires that each state provides the EPA Administrator with a report every five years evaluating the effectiveness of the state’s current regional haze strategy to determine if improvement or change is necessary, thereby ensuring continued progress toward visibility improvement in the Class I areas.³

Arizona submitted its 2018 – 2028 SIP revision on Aug. 15, 2022, to satisfy the requirements of the first provision.² That SIP revision and regional haze plan information is not included in this progress report | View Documents > 

Instead, this report satisfies the submittal requirements³ and contains all the information necessary to evaluate the current progress in meeting Arizona’s Reasonable Progress Goals in each mandatory Class I area. 

Review Documents:

• Original Published Public Notice | View >
• Draft 2025 Progress Report for the Regional Haze Rule | View >
• Or in person at the ADEQ Record Center | Learn How >
  

Public Comment Period:

Dates: Nov. 5, 2024 – Dec. 5, 2024

Comments may be submitted as follows:

• By Email | Send Email >     
• By Mail (Must be postmarked or received by Dec. 5, 2024):

ADEQ
Air Quality Division, Air Quality Improvement Planning Section
Attn: Alex Ponikvar
1110 W. Washington St.
Phoenix, AZ  85007

• At Virtual Public Hearing | Dec. 5, 2024 | 3 p.m. | View Details >

¹40 CFR §51.308
²Section 51.308(f)
³Section 51.308(g) and (h)