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AGENCY:
Environmental Protection Agency (EPA).
ACTION:
Proposed rule.
SUMMARY:
The Environmental Protection Agency (EPA) is proposing a limited approval and limited disapproval of revisions to the Maricopa County Air Quality Department (MCAQD or “County”) portion of the Arizona State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOC) from loading of organic liquids and gasoline. We are proposing action on local rules to regulate these emission sources under the Clean Air Act (CAA or “Act”). We are also proposing to disapprove the MCAQD's reasonably available control technology (RACT) demonstration for the source categories associated with these rules for the 2008 8-hour ozone national ambient air quality standards (NAAQS) in the Phoenix-Mesa ozone nonattainment area. We are taking comments on this proposal and plan to follow with a final action.
DATES:
Comments must be received on or before December 9, 2024.
ADDRESSES:
Submit your comments, identified by Docket ID No. EPA-R09-OAR-2024-0349 at https://www.regulations.gov. For comments submitted at Regulations.gov, follow the online instructions for submitting comments. Once submitted, comments cannot be edited or removed from Regulations.gov. The EPA may publish any comment received to its public docket. Do not submit electronically any information you consider to be Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Multimedia submissions (audio, video, etc.) must be accompanied by a written comment. The written comment is considered the official comment and should include discussion of all points you wish to make. The EPA will generally not consider comments or comment contents located outside of the primary submission ( i.e., on the web, cloud, or other file sharing system). For additional submission methods, please contact the person identified in the FOR FURTHER INFORMATION CONTACT section. For the full EPA public comment policy, information about CBI or multimedia submissions, and general guidance on making effective comments, please visit https://www.epa.gov/dockets/commenting-epa-dockets. If you need assistance in a language other than English or if you are a person with a disability who needs a reasonable accommodation at no cost to you, please contact the person identified in the FOR FURTHER INFORMATION CONTACT section.
FOR FURTHER INFORMATION CONTACT:
Donnique Sherman, EPA Region IX, 75 Hawthorne St., San Francisco, CA 94105. By phone: (415) 947-4129; email at sherman.donnique@epa.gov.
SUPPLEMENTARY INFORMATION:
Throughout this document, “we,” “us” and “our” refer to the EPA.
Table of Contents
I. The State's Submittal
A. What rules did the State submit?
B. Are there other versions of these rules?
C. What is the purpose of the submitted rule revisions?
II. The EPA's Evaluation and Action
A. How is the EPA evaluating the rules?
B. Do the rules meet the evaluation criteria?
C. Were there any newly identified deficiencies with the December 3, 2020, submitted rules?
D. The EPA's Recommendations To Further Improve the Rules
E. Proposed Action and Public Comment
III. Incorporation by Reference
IV. Statutory and Executive Order Reviews
I. The State's Submittal
A. What rules did the State submit?
Table 1 lists the rules addressed by this proposal with the dates that they were adopted by the MCAQD and submitted to the EPA by the Arizona Department of Environmental Quality (ADEQ or “State”).
Table 1—Submitted Rules
| Local agency | Rule No. | Rule title | Revised | Submitted |
|---|---|---|---|---|
| MCAQD | 352 | Gasoline Cargo Tank Testing and Use | 11/18/2020 | 12/03/2020 |
| MCAQD | 353 | Storage and Loading of Gasoline at a Gasoline Dispensing Facility (GDF) | 11/18/2020 | 12/03/2020 |
Table 2—Rules and Associated CTGs
| Rule No. | Associated CTGs |
|---|---|
| Rule 352 | Control of Volatile Organic Compound Leaks from Gasoline Tank Trucks and Vapor Collection Systems (EPA-450/2-78-051). |
| Rule 353 | Design Criteria for Stage I Vapor Control Systems—Gasoline Service Stations (EPA-450/R-75-102). |