Tucson International Airport Area Site, Tucson, AZ; Notice of Proposed CERCLA Settlement Agreement for Removal Action

[Federal Register Volume 91, Number 73 (Thursday, April 16, 2026)]
[Notices]
[Page 20428]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2026-07402]


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ENVIRONMENTAL PROTECTION AGENCY

[CERCLA-09-2026-07; FRL-13281-01-R9]


Tucson International Airport Area Site, Tucson, AZ; Notice of 
Proposed CERCLA Settlement Agreement for Removal Action

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice; request for comment.

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SUMMARY: Notice is hereby given of a proposed administrative settlement 
with the City of Tucson to conduct response actions at the Tucson 
International Area Superfund Site, in Tucson, Arizona. The settlement 
is entered into pursuant to the Comprehensive Environmental Response, 
Compensation and Liability Act of 1980, as amended (``CERCLA'') and 
requires the City of Tucson to construct a treatment system for certain 
per- and polyfluoroalkyl substances (PFAS) entering the Tucson Area 
Remediation Plant. The settlement includes a covenant not to sue and 
contribution protection regarding the work. The Agency will consider 
all comments received and may modify or withdraw its consent to the 
settlement if comments received disclose facts or considerations which 
indicate the proposed settlement is inappropriate, improper, or 
inadequate.

DATES: Comments must be received on or before May 18, 2026.

ADDRESSES: You may send comments, identified by the Docket ID No. 
CERCLA-09-2026-007, by any of the following methods.
    •  Federal eRulemaking Portal: https://www.regulations.gov/ 
(our preferred method). Follow the online instructions for submitting 
comments.
    •  Email: Jon Owens, at owens.jon@epa.gov. Include Docket ID 
No. CERCLA-09-2026-007 in the subject line of the message.
    •  Mail: U.S. Environmental Protection Agency, Region 9, to 
Jon Owens, Mail Code ORC-3-1, 75 Hawthorne Street, San Francisco, CA 
94105.
    Instructions: All submissions received must include the Docket ID 
No. for this rulemaking. Comments received may be posted without change 
to https://www.regulations.gov/, including any personal information 
provided. For detailed instructions on sending comments and additional 
information on the rulemaking process, see the SUPPLEMENTARY 
INFORMATION section of this document. The Agency's response to any 
comments received will be available for public inspection at 75 
Hawthorne Street, San Francisco, CA 94105.

FOR FURTHER INFORMATION CONTACT: Jon Owens, Assistant Regional Counsel 
(ORC-3), Office of Regional Counsel, U.S. EPA Region IX, 75 Hawthorne 
Street, San Francisco, CA 94105; telephone number: (415) 972-3620; 
email address: owens.jon@epa.gov.

SUPPLEMENTARY INFORMATION: This settlement is made pursuant to 42 
U.S.C. 122(h). The Respondent to the Proposed Settlement is City of 
Tucson. The proposed settlement is available for public inspection at 
EPA Region IX, 75 Hawthorne Street, San Francisco, California. A copy 
of the proposed settlement may be obtained by request as noted in the 
FOR FURTHER INFORMATION CONTACT section of this document. Comments 
should reference the Tucson International Airport Area Superfund Site 
or the Docket ID No.

Michael Montgomery,
Director, Superfund Division, Region IX.
[FR Doc. 2026-07402 Filed 4-15-26; 8:45 am]
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