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Proposed Deletion From the National Priorities List

The Environmental Protection Agency (EPA) is issuing a Notice of Intent to delete one site, Corozal Well, from the National Priorities List (NPL) and requests public comments on...

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Environmental Protection Agency
  1. 40 CFR Part 300
  2. [EPA-HQ-OLEM-2025-1247; FRL-12905-01-OLEM]

AGENCY:

Environmental Protection Agency (EPA).

ACTION:

Proposed rule; notice of intent.

SUMMARY:

The Environmental Protection Agency (EPA) is issuing a Notice of Intent to delete one site, Corozal Well, from the National Priorities List (NPL) and requests public comments on this proposed action. The NPL, promulgated pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) of 1980, as amended, is an appendix of the National Oil and Hazardous Substances Pollution Contingency Plan (NCP). The EPA and the Commonwealth of Puerto Rico, through the Puerto Rico Department of Natural and Environmental Resources (PRDNER), have determined that all appropriate response actions under CERCLA have been completed. However, this deletion does not preclude future actions under Superfund.

DATES:

Comments regarding this proposed action must be submitted on or before October 14, 2025.

ADDRESSES:

EPA has established a docket for this action under the Docket ID No. included in table 1 in the SUPPLEMENTARY INFORMATION section of this document. Submit your comments, identified by the appropriate Docket ID No., by one of the following methods:

  • https://www.regulations.gov. Follow on-line 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, 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.
  • Email: Table 2 in the SUPPLEMENTARY INFORMATION section of this document provides an email address to submit public comments for the proposed deletion action.

Instructions: Direct your comments to the Docket ID No. included in table 1 in the SUPPLEMENTARY INFORMATION section of this document. EPA's policy is that all comments received will be included in the public docket without change and may be made available online at https://www.regulations.gov, including any personal information provided, unless the comment includes information claimed to be Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Do not submit information that you consider to be CBI or otherwise protected through https://www.regulations.gov or email. The https://www.regulations.gov website is an “anonymous access” system, which means EPA will not know your identity or contact information unless you provide it in the body of your comment. If you send an email comment directly to EPA without going through https://www.regulations.gov, your email address will be automatically captured and included as part of the comment that is placed in the public docket and made available on the internet. If you submit an electronic comment, EPA recommends that you include your name and other contact information in the body of your comment and with any disk or CD-ROM you submit. If EPA cannot read your comment due to technical difficulties and cannot contact you for clarification, EPA may not be able to consider your comment. Electronic files should avoid the use of special characters, any form of encryption, and be free of any defects or viruses.

Docket: EPA has established a docket for this action under the Docket ID included in table 1 in the SUPPLEMENTARY INFORMATION section of ( printed page 43989) this document. All documents in the docket are listed on the https://www.regulations.gov website. The Final Close-Out Report (FCOR) is the primary document which summarizes site information to support the deletion. It is typically written for a broad, non-technical audience and this document is included in the deletion docket for each of the sites in this rulemaking. Although listed in the index, some information is not publicly available, i.e., Confidential Business Information or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the internet and will be publicly available only in hard copy form. Docket materials are available through https://www.regulations.gov or at the corresponding Regional Records Center. Location, address, and phone number of the Regional Records Centers follows.

Regional Records Center:

  • Region 2 (NJ, NY, PR, VI), U.S. EPA, 290 Broadway, New York, NY 10007-1866; telephone number: (212) 637-4308.
  • EPA Headquarters Docket Center Reading Room (deletion dockets for all States), William Jefferson Clinton (WJC) West Building, Room 3334, 1301 Constitution Avenue NW, Washington, DC 20004, telephone number: (202) 566-1744.

EPA staff listed below in the FOR FURTHER INFORMATION CONTACT section may assist the public in answering inquiries about deleted sites, accessing deletion support documentation, and determining whether there are additional physical deletion dockets available.

FOR FURTHER INFORMATION CONTACT:

SUPPLEMENTARY INFORMATION:

Table of Contents

I. Introduction

II. NPL Deletion Criteria

III. Deletion Procedures

IV. Basis for Full Site Deletion

I. Introduction

EPA is issuing a proposed rule to delete one site from the NPL and requests public comments on this proposed action. EPA will accept comments on the proposal to delete the site for thirty (30) days after publication of this document in the Federal Register .

The NPL constitutes Appendix B of 40 CFR part 300 which is the NCP, which EPA created under section 105 of the CERCLA statute of 1980, as amended. EPA maintains the NPL as those sites that appear to present a significant risk to public health, welfare, or the environment. Sites on the NPL may be the subject of remedial actions financed by the Hazardous Substance Superfund (Fund). As described in 40 CFR 300.425(e)(3) of the NCP, a site deleted from the NPL remains eligible for Fund-financed remedial action if future conditions warrant such actions.

Section II. of this document explains the criteria for deleting sites from the NPL. Section III. of this document discusses procedures that EPA is using for this action. Section IV. of this document discusses the site proposed for deletion and demonstrates how it meets the deletion criteria, including reference documents with the rationale and data principally relied upon by the EPA to determine that the Superfund response is complete.

II. NPL Deletion Criteria

The NCP establishes the criteria that EPA uses to delete sites from the NPL. In accordance with 40 CFR 300.425(e), sites may be deleted from the NPL where no further response is appropriate. In making such a determination pursuant to 40 CFR 300.425(e), EPA will consider, in consultation with the State, whether any of the following criteria have been met:

i. Responsible parties or other persons have implemented all appropriate response actions required;

ii. All appropriate Fund-financed response under CERCLA has been implemented, and no further response action by responsible parties is appropriate; or

iii. The remedial investigation has shown that the release poses no significant threat to public health or the environment and, therefore, the taking of remedial measures is not appropriate.

Pursuant to CERCLA section 121(c) and the NCP, EPA conducts five-year reviews to ensure the continued protectiveness of remedial actions where hazardous substances, pollutants, or contaminants remain at a site above levels that allow for unlimited use and unrestricted exposure. EPA conducts such five-year reviews even if a site is deleted from the NPL. EPA may initiate further action to ensure continued protectiveness at a deleted site if new information becomes available that indicates it is appropriate. As described in 40 CFR 300.425(e)(3), whenever there is a significant release from a site deleted from the NPL, the deleted site may be restored to the NPL without application of the hazard ranking system.

III. Deletion Procedures

The following procedures apply to the deletion of the sites in this proposed rule:

(1) EPA consulted with the Commonwealth of Puerto Rico before developing this Notice of Intent for deletion.

(2) EPA has provided the Commonwealth of Puerto Rico 30 working days for review of site deletion documents prior to publication of it today.

(3) In accordance with the criteria discussed above, EPA has determined that no further response is appropriate.

(4) The Commonwealth of Puerto Rico, through the PRDNER, has concurred with the proposed deletion action.

(5) Concurrently with the publication of this Notice of Intent for deletion in the Federal Register , a notice is being distributed to local elected officials and the surrounding community, via news releases, listservs, social media, and the site's web page. The notices announce the 30-day public comment period concerning the proposed action for deletion.

(6) EPA placed copies of documents supporting the proposed deletion in the deletion docket and made these items available for public inspection and copying at the Regional Records Center identified above.

If comments are received within the 30-day comment period on this document, EPA will evaluate and respond accordingly to the comments before making a final decision to delete the site. If necessary, EPA will prepare a Responsiveness Summary to address any significant public comments received. After the public comment period, if EPA determines it is still appropriate to delete the site, EPA will publish a final Notice of Deletion in the Federal Register . Public notices, public submissions and copies of the Responsiveness Summary, if prepared, will be made available to interested parties and included in the site information repositories listed above. ( printed page 43990)

Deletion of a site from the NPL does not itself create, alter, or revoke any individual's rights or obligations. Deletion of a site from the NPL does not in any way alter EPA's right to take enforcement actions, as appropriate. The NPL is designed primarily for informational purposes and to assist EPA management. Section 300.425(e)(3) of the NCP states that the deletion of a site from the NPL does not preclude eligibility for future response actions, should future conditions warrant such actions.

IV. Basis for Full Site Deletion

The site to be deleted from the NPL, the location of the site, and docket number with information including reference documents with the rationale and data principally relied upon by the EPA to determine that the Superfund response is complete are specified in table 1. The NCP permits activities to occur at a deleted site, or that media or parcel of a partially deleted site, including operation and maintenance of the remedy, monitoring, and five-year reviews. These activities for the site are entered in table 1, if applicable, under Footnote such that: 1= site has continued operation and maintenance of the remedy; 2= site receives continued monitoring; and 3= site five-year reviews are conducted.

Table 1
Site name City/county, state Type Docket No. Footnote
Corozal Well Corozal, PR Full EPA-HQ-OLEM-2025-1247

Table 2 includes information concerning whether the full site is proposed for deletion from the NPL or a description of the area, media or Operable Units (OUs) of the NPL site proposed for partial deletion from the NPL, and an email address to which public comments may be submitted if the commenter does not comment using https://www.regulations.gov.

Table 2
Site name Full site deletion (full) or media/parcels/description for partial deletion Email address for public comments
Corozal Well Full .

EPA maintains the NPL as the list of sites that appear to present a significant risk to public health, welfare, or the environment. Deletion from the NPL does not preclude further remedial action. Whenever there is a significant release from a site deleted from the NPL, the deleted site may be restored to the NPL without application of the hazard ranking system. Deletion of a site from the NPL does not affect responsible party liability in the unlikely event that future conditions warrant further actions.

List of Subjects in 40 CFR Part 300

  • Environmental protection
  • Air pollution control
  • Chemicals
  • Hazardous substances
  • Hazardous waste
  • Intergovernmental relations
  • Natural resources
  • Oil pollution
  • Penalties
  • Reporting and recordkeeping requirements
  • Superfund
  • Water pollution control
  • Water supply

Authority: 33 U.S.C. 1251 et seq.;42 U.S.C. 9601-9657; E.O. 13626, 77 FR 56749, 3 CFR, 2013 Comp., p. 306; E.O. 12777, 56 FR 54757, 3 CFR, 1991 Comp., p. 351; E.O. 12580, 52 FR 2923, 3 CFR, 1987 Comp., p. 193.

Steven Cook,

Principal Deputy Assistant Administrator, Office of Land and Emergency Management.

[FR Doc. 2025-17505 Filed 9-10-25; 8:45 am]

BILLING CODE 6560-50-P

Legal Citation

Federal Register Citation

Use this for formal legal and research references to the published document.

90 FR 43988

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Suggested Web Citation

Use this when citing the archival web version of the document.

“Proposed Deletion From the National Priorities List,” thefederalregister.org (September 11, 2025), https://thefederalregister.org/documents/2025-17505/proposed-deletion-from-the-national-priorities-list.