                 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
                                   REGION IX
                              75 Hawthorne Street
                           San Francisco, CA  94105

                                 July 28, 2023

Memorandum

Subject: 	Addition of Public Agency Record to Docket # EPA-R09-OAR-2023-0263  

From:   Ashley Graham, Geographic Strategies and Modeling Section, Air and Radiation Division

To: 	Docket # EPA-R09-OAR-2023-0263


On July 27, 2023, EPA identified a public agency record, EPA's "Technical Support Document, San Joaquin Valley PM2.5 Plan for the 1997 24-hour PM2.5 NAAQS," August 2021 ("EPA's 1997 24-hour PM2.5 TSD"), that is referenced on page 95 of the Notice of Proposed Rulemaking but was not included in the docket index or uploaded to the online docket at Regulations.gov. The EPA uploaded the record the same day to the online docket for the Notice and it is now available to the public. The EPA has also revised the docket index to include the record.
