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Federal Register / Vol. 86, No. 112 / Monday, June 14, 2021 / Proposed Rules Notification of availability and public comment period.

ACTION:

This notification is hereby given that the Environmental Protection Agency EPA or Agency has posted on our public electronic docket and internet website revised responses to certain state designation recommendations for the 2015 Ozone National Ambient Air Quality Standards NAAQS 2015 Ozone NAAQS. These responses include our intended designations for El Paso County, Texas associated with the previously designated Dona Ana County, New Mexico nonattainment area and Weld County, Colorado associated with the Denver Metro/North Front Range, Colorado nonattainment area. The EPA
invites the public to review and provide input on our intended designations during the comment period specified in the DATES section. The EPA sent its revised responses directly to the states of Texas and Colorado on or about May 24, 2021. The EPA intends to make final designation determinations for the counties addressed by these responses no earlier than 120 days from the date the EPA notified the states of the Agencys intended designations.
DATES: Comments must be received on or before July 14, 2021. Please refer to SUPPLEMENTARY INFORMATION for additional information on the comment period.
ADDRESSES: Submit your comments, identified by Docket ID No. EPAHQ
OAR20170548, at https
SUMMARY:

www.regulations.gov. Follow the online instructions for submitting comments.
Out of an abundance of caution for members of the public and our staff, the EPA Docket Center and Reading Room are closed to the public, with limited exceptions, to reduce the risk of transmitting COVID19. Our Docket Center staff will continue to provide remote customer service via email, phone, and webform. We encourage the public to submit comments via https
www.regulations.gov, as there may be a delay in processing mail and faxes.
Hand deliveries and couriers may be received by scheduled appointment only. For further information on EPA
Docket Center services and the current status, please visit us online at https
www.epa.gov/dockets.
Once submitted, comments cannot be edited or removed from regulations.gov.
The EPA may publish any comment received to our 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., comments hosted on the Web, Cloud, or other file sharing system. For additional submission
Regional offices
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I. What is the purpose of this action?
The purpose of this notification of availability is to solicit input from interested parties other than states on
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methods, 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-epadockets.
For general questions concerning this action, please contact Carla Oldham, U.S. EPA, Office of Air Quality Planning and Standards, Air Quality Policy Division, C541A, Research Triangle Park, NC 27709, telephone 919 541
3347, email at oldham.carla@epa.gov or Andrew Leith, U.S. EPA, Office of Air Quality Planning and Standards, Air Quality Policy Division, C541A, Research Triangle Park, NC 27709, telephone 919 5411069, email at leith.andrew@epa.gov. The following EPA contacts can answer questions regarding areas in a particular EPA
Regional office:

FOR FURTHER INFORMATION CONTACT:

Regional Office Contacts:
Region VICarrie Paige 214 6656521, email at paige.carrie@epa.gov.
Region VIIIAbby Fulton, 303 312
6563, email at fulton.abby@epa.gov.
The public may inspect the recommendations from the states and tribes, our recent letters notifying the affected states and tribes of our intended designations, and area-specific technical support information at the following locations:
Affected states
EPA Region 6, 1201 Elm Street, Dallas, Texas 75270
EPA Region 8, Air Quality Planning Branch, 1595 Wynkoop Street, Denver, Colorado 80202.

Most of the EPA offices are closed to reduce the risk of transmitting COVID
19, but staff remain available via telephone and email. The EPA
encourages the public to review designation recommendations from states, our recent letters notifying the affected states of our intended designations, and area-specific technical support information online at https
www.epa.gov/ozone-designations and in the public docket for these ozone designations at https
www.regulations.gov under Docket ID
No. EPAHQOAR20170548.
SUPPLEMENTARY INFORMATION:

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New Mexico and Texas.
Colorado.

the EPAs recent revised responses to the state designation recommendations for the 2015 Ozone NAAQS. These responses, and their supporting technical analyses, can be found at https www.epa.gov/ozonedesignations and in the public docket for these ozone designations at https
www.regulations.gov under Docket ID
No. EPAHQOAR20170548.
On October 1, 2015, the EPA
Administrator signed a notification of final rulemaking that revised the primary and secondary ozone NAAQS
80 FR 65292; October 26, 2015. The EPA established the revised primary and secondary ozone NAAQS at 0.070
parts per million ppm. The 2015
Ozone NAAQS are met at an ambient air quality monitoring site when the 3-year average of the annual fourth highest
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daily maximum 8-hour average ozone concentration i.e., the design value is less than or equal to 0.070 ppm. The revised standards will improve public health protection, particularly for at-risk groups including children, older adults, people of all ages who have lung diseases such as asthma, and people who are active outdoors, especially outdoor workers. They also will improve the health of trees, plants and ecosystems.
After the EPA promulgates a new or revised NAAQS, the Clean Air Act CAA requires the EPA to designate all areas of the country as either Nonattainment, Attainment, or Unclassifiable, for that NAAQS. The process for these initial designations is contained in CAA section 107d1 42
U.S.C. 7407. After promulgation of a
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