Final Determination To Prohibit the Specification of and Restrict the Use for Specification of Certain Waters Within Defined Areas as Disposal Sites; Pebble Deposit Area, Southwest Alaska, 7441-7443 [2023-02287]

Download as PDF lotter on DSK11XQN23PROD with NOTICES1 Federal Register / Vol. 88, No. 23 / Friday, February 3, 2023 / Notices ‘‘snapshot’’ of financial and socioeconomic data. As such, these metrics and analyses are well-suited and most appropriate for evaluating requests for WQS variances under 40 CFR 131.10(g)(6). The time-limited nature of a WQS variance ensures that changes in financial conditions would be considered if and when there is a request for a subsequent variance or at the time of reevaluation for a WQS variance with a duration longer than five years. Because the revision of a designated use (including a revision to a less stringent use subcategory) or allowing degradation of high-quality waters could have an environmental impact with a much longer timeframe, EPA recommends caution when making such WQS decisions using ‘‘snapshot’’ economic and financial information. EPA recommends states and authorized tribes first explore whether there are other factors under 40 CFR 131.10(g) that preclude attainment of the designated use when considering a revision to a designated use. Where states and authorized tribes choose to pursue a use change or degradation of high-quality water, EPA recommends an expanded multi-step approach to evaluate economic impacts. EPA has revised the FCA Guidance to better explain the distinction between a WQS variance and a revision to a designated use or antidegradation review. EPA also outlines how these recommendations relate to the objective of the CWA to ‘‘restore and maintain the chemical, physical, and biological integrity of the Nation’s waters.’’ Several commentors questioned why Alternative 2 was not recommended as a sole basis for supporting WQS decisions. Although financial and rate models may provide information on the impact of different rate scenarios over time, such information is insufficient to determine if required wastewater treatment projects necessary to meet water quality standards would result in substantial and widespread economic and social impacts. Financial and rate models also do not provide information about whether lowering of water quality would be necessary to accommodate important economic or social development. Furthermore, EPA is not aware of any specific thresholds or benchmarks that could be uniformly applicable across all communities to make WQS decisions. However, EPA agrees that financial and rate models can be helpful as supporting information for WQS decisions. The agency provided additional language in the FCA Guidance to better explain its VerDate Sep<11>2014 17:51 Feb 02, 2023 Jkt 259001 views on financial and rate models in WQS decisions. The FCA Guidance does not alter EPA’s review of changes to water quality standards. The CWA specifies that any state or tribal water quality standard must be submitted to EPA for review and approval or disapproval. 33 U.S.C. 1313(c). Adoption of a WQS variance or revision of a designated use is a change to water quality standards. In addition, EPA can object to an NPDES permit issued by an authorized state or tribe if the permit does not conform to the statute or regulations, including the lowering of water quality in high-quality waters without an adequate demonstration that such lowering of water quality is necessary for important economic or social development in the area in which the high-quality waters are located. See, e.g., 33 U.S.C. 1311(b)(1)(C) and 1342. EPA will continue to evaluate WQS and NPDES permits as it has for decades in a transparent manner consistent with applicable statutes, regulations, guidance, and long-established policies. IV. Conclusion The FCA Guidance outlines strategies for communities to support affordable utility rates while making water quality decisions and planning investments in water infrastructure that are essential to protecting clean water. EPA is committed to ensuring that all Americans have access to essential water services and clean water. This guidance provides a needed framework that can help achieve that goal for rural, suburban, and urban communities across the country. The more detailed financial analysis in the FCA Guidance will provide communities and EPA a clearer picture of a community’s financial capability and strategies to protect low-income residents while achieving timely and equitable clean water protections. Federal funding initiatives and programs such as the Bipartisan Infrastructure Law (BIL), American Rescue Plan Act (ARPA), State Revolving Loan Funds (SRFs), Water Infrastructure Finance and Innovation Act (WIFIA) and others provide billions of dollars for state, local, territorial, and tribal governments. These resources create a historic opportunity for municipalities to address long-standing challenges with shorter compliance schedules, providing water quality and public health improvements that deliver important social, environmental, and economic benefits to communities. EPA will continue to consider each community’s financial capability on a holistic case-by-case basis. Where PO 00000 Frm 00048 Fmt 4703 Sfmt 4703 7441 appropriate, EPA has and will continue to consider supplemental information submitted by the community to negotiate reasonable and effective schedules for implementation of the CWA controls. Andrew D. Sawyers, Director, Office of Wastewater Management, Office of Water. [FR Doc. 2023–02288 Filed 2–2–23; 8:45 am] BILLING CODE 6560–50–P ENVIRONMENTAL PROTECTION AGENCY [EPA–R10–OW–2022–0418; FRL 10624–01– OW] Final Determination To Prohibit the Specification of and Restrict the Use for Specification of Certain Waters Within Defined Areas as Disposal Sites; Pebble Deposit Area, Southwest Alaska Environmental Protection Agency (EPA). ACTION: Notice of availability. AGENCY: Pursuant to Section 404(c) of the Clean Water Act (CWA), the Environmental Protection Agency (EPA) is issuing a Final Determination to prohibit the specification of and restrict the use for specification of certain waters in the South Fork Koktuli River (SFK), North Fork Koktuli River (NFK), and Upper Talarik Creek (UTC) watersheds as disposal sites for certain discharges of dredged or fill material associated with developing the Pebble deposit, a copper-, gold-, and molybdenum-bearing ore body located in Southwest, Alaska. FOR FURTHER INFORMATION CONTACT: For information concerning the Final Determination, contact Palmer Hough, Oceans, Wetlands and Communities Branch, Office of Water (4504–T), Environmental Protection Agency, 1200 Pennsylvania Avenue NW, Washington, DC 20460; telephone number (202) 566– 1374; email address: hough.palmer@ epa.gov. For more information about EPA’s efforts in Bristol Bay and to review the CWA Section 404(c) Final Determination, see https://www.epa.gov/ bristolbay. SUPPLEMENTARY INFORMATION: SUMMARY: I. Clean Water Act Section 404(c) Review Process The EPA’s mission is to protect human health and the environment. The CWA, the objective of which is to ‘‘restore and maintain the chemical, physical, and biological integrity of the Nation’s waters,’’ 33 U.S.C 1251(a), is E:\FR\FM\03FEN1.SGM 03FEN1 7442 Federal Register / Vol. 88, No. 23 / Friday, February 3, 2023 / Notices lotter on DSK11XQN23PROD with NOTICES1 essential to EPA’s mission and establishes the basic structure for regulating discharges of pollutants into waters of the United States. To advance this overall objective, Section 301(a) of the CWA, 33 U.S.C. 1311(a), prohibits the discharge of any pollutant by any person into waters of the United States except as authorized by specific provisions of the Act, including a permit issued pursuant to Section 402 or 404, 33 U.S.C. 1342; 33 U.S.C. 1344. Section 404(a) of the CWA authorizes the United States Army Corps of Engineers (USACE) to issue permits for the discharge of dredged or fill material into waters of the United States at specified disposal sites. 33 U.S.C. 1344(a). Section 404(b) provides, subject to Section 404(c) of the CWA, each such disposal site shall be specified for each such permit by USACE. 33 U.S.C. 1344(a). 33 U.S.C. 1344(b). Section 404(c) of the CWA authorizes the EPA to prohibit the specification (including the withdrawal of specification) of any defined area as a disposal site, and to deny or restrict the use of any defined area for specification (including the withdrawal of specification) as a disposal site, whenever it determines, after notice and opportunity for public hearings, that the discharge of such materials into such area will have an unacceptable adverse effect on municipal water supplies, shellfish beds and fishery areas (including spawning and breeding areas), wildlife, or recreational areas. 33 U.S.C. 1344(c). The EPA’s regulations at 40 CFR part 231 govern the Agency’s exercise of its CWA Section 404(c) authority. II. Proposed Mine at the Pebble Deposit The Pebble deposit in Southwest Alaska is a large, low-grade copper-, gold-, and molybdenum-bearing ore body deposit located at the headwaters of the largely undeveloped Bristol Bay watershed that underlies portions of the SFK, NFK, and UTC watersheds, which drain to two of the largest rivers in the Bristol Bay watershed, the Nushagak and Kvichak Rivers. In December 2017, Pebble Limited Partnership (PLP) submitted a CWA Section 404 permit application to USACE to develop a mine at the Pebble deposit that triggered the development of an Environmental Impact Statement (EIS) pursuant to the National Environmental Policy Act (NEPA). In response to the CWA Section 404 permit review and NEPA processes, PLP submitted a revised permit application to USACE in June 2020 (i.e., the 2020 Mine Plan). On July 24, 2020, 85 FR 44890, USACE published a Notice of Availability for the Final EIS (FEIS) in VerDate Sep<11>2014 17:51 Feb 02, 2023 Jkt 259001 the Federal Register and on November 20, 2020, USACE issued its Record of Decision (ROD) denying PLP’s CWA Section 404 permit application on the basis that the 2020 Mine Plan would not comply with the CWA Section 404(b)(1) Guidelines and would be contrary to the public interest. By letter dated November 25, 2020, USACE notified PLP that the proposed project failed to comply with the CWA Section 404(b)(1) Guidelines because ‘‘the proposed project would cause unavoidable adverse impacts to aquatic resources which would result in Significant Degradation to aquatic resources.’’ III. 2022 Proposed Determination In January 2022, consistent with its regulatory procedures for proposed determinations at 40 CFR 231.3(a), EPA Region 10 notified USACE, the Alaska Department of Natural Resources (ADNR), PLP, Pebble East Claims Corporation, Pebble West Claims Corporation, and Chuchuna Minerals (the Parties) of EPA Region 10’s intention to issue a revised proposed determination because, based on a review of information available to that date, it continued to believe that the discharge of dredged or fill material associated with mining the Pebble deposit could result in unacceptable adverse effects on important fishery areas. EPA Region 10 provided the Parties with an opportunity to consult with the Region and to submit information for the record to demonstrate that no unacceptable adverse effects would result from discharges associated with mining the Pebble deposit or that actions could be taken to prevent unacceptable adverse effects on important fishery areas. ADNR, PLP, and Chuchuna Minerals submitted response letters, and the EPA met individually with PLP and Chuchuna Minerals. None of the Parties demonstrated to the satisfaction of EPA Region 10 that no unacceptable adverse effects would occur as a result of the discharge of dredged or fill material associated with mining the Pebble deposit. Thus, EPA Region 10 decided that the appropriate next step in this CWA Section 404(c) process was the publication of a revised proposed determination (the 2022 Proposed Determination). Accordingly, on May 26, 2022, EPA Region 10 published in the Federal Register a notice of availability and notice of public hearings for the 2022 Proposed Determination for the Pebble Deposit Area, Southwest Alaska issued pursuant to Section 404(c) of the Clean Water Act (CWA) (87 FR 32021). On June 16 and 17, 2022, the EPA Region PO 00000 Frm 00049 Fmt 4703 Sfmt 4703 10 held three public hearings. On June 30, 2022, the EPA published in the Federal Register a Notice of extension of public comment period and public hearing comment period through September 6, 2022 (87 FR 39091). On September 6, 2022, EPA Region 10 published in the Federal Register a notice to extend the time period provided in 40 CFR 231.5(a) to either withdraw the proposed determination or to prepare a recommended determination through no later than December 2, 2022, to help ensure full consideration of the extensive administrative record, including all public comments (87 FR 54498, September 6, 2022). In addition to the testimony taken at the hearings, EPA Region 10 received more than 582,000 written comments during the public comment period. IV. Recommended Determination EPA Region 10 completed its review of the extensive administrative record, including all public comments, and the Regional Administrator determined that the discharge of dredged or fill material associated with developing the Pebble deposit would be likely to result in unacceptable adverse effects on anadromous fishery areas. Accordingly, EPA Region 10 prepared, and on December 1, 2022, transmitted to the EPA’s Assistant Administrator for Water a Recommended Determination, along with the administrative record, for review and final action. On December 2, 2022, the Assistant Administrator for Water notified the Parties that she had received EPA Region 10’s Recommended Determination and, consistent with the EPA’s CWA Section 404(c) regulations at 40 CFR 231.6, provided them the opportunity to notify the EPA of their intent to take corrective action to prevent unacceptable adverse effects on anadromous fishery areas from certain discharges of dredged or fill material associated with developing the Pebble deposit. ADNR, PLP, USACE, and Chuchuna Minerals submitted written responses to the EPA’s notification letters. ADNR also requested a meeting with the EPA. The EPA met with ADNR and other representatives from the State of Alaska. None of the Parties identified corrective action to prevent unacceptable adverse effects satisfactory to the Assistant Administrator for Water. After reviewing EPA Region 10’s Recommended Determination; the extensive administrative record supporting the Regional Administrator’s decision, including all public comments; letters from ADNR, PLP, E:\FR\FM\03FEN1.SGM 03FEN1 Federal Register / Vol. 88, No. 23 / Friday, February 3, 2023 / Notices lotter on DSK11XQN23PROD with NOTICES1 Chuchuna Minerals, and USACE; and considering the information provided during the Agency’s meeting with the State of Alaska, the Assistant Administrator for Water has determined that certain discharges of dredged or fill material associated with developing the Pebble deposit into certain waters of the United States will have unacceptable adverse effects on anadromous fishery areas and affirms the Recommended Determination. V. Final Determination Based on information in PLP’s CWA Section 404 permit application, the FEIS, and the ROD, discharges of dredged or fill material to construct and operate the 2020 Mine Plan’s proposed mine site would result in the permanent loss of approximately 8.5 miles (13.7 km) of anadromous fish streams, 91 miles (147 km) of additional streams that support anadromous fish streams, and approximately 2,108 acres (8.5 km2) of wetlands and other waters in the SFK and NFK watersheds that support anadromous fish streams. These discharges would also result in streamflow alterations that would adversely affect approximately 29 miles (46.7 km) of additional anadromous fish streams downstream of the mine site due to greater than 20 percent changes in average monthly streamflow. The EPA has determined that the large-scale loss of and damage to headwater streams, wetlands, and other aquatic resources that support salmon populations in the SFK and NFK watersheds from the discharge of dredged or fill material for the construction and routine operation of the 2020 Mine Plan will have unacceptable adverse effects on anadromous fishery areas in the SFK and NFK watersheds. The EPA has also determined that discharges of dredged or fill material for the construction and routine operation of a mine to develop the Pebble deposit anywhere in the mine site area that would result in the same or greater levels of loss or streamflow changes as the 2020 Mine Plan also will have unacceptable adverse effects on anadromous fishery areas in the SFK and NFK watersheds, because such discharges would involve the same aquatic resources characterized as part of the evaluation of the 2020 Mine Plan. To prevent these unacceptable adverse effects, the Final Determination prohibits the specification of certain waters of the United States in the SFK and NFK watersheds as disposal sites for the discharge of dredged or fill material for the construction and routine operation of the 2020 Mine Plan, VerDate Sep<11>2014 17:51 Feb 02, 2023 Jkt 259001 including future proposals to construct and operate a mine to develop the Pebble deposit with discharges of dredged or fill material into waters of the United States that would result in the same or greater levels of aquatic resource loss or streamflow changes as the 2020 Mine Plan. The Defined Area for Prohibition encompasses certain headwaters of the SFK and NFK watersheds and is delineated by the entirety of the Public Land Survey System (PLSS) quarter sections where mine site discharges were proposed in PLP’s 2020 Mine Plan. Separately, the EPA has also determined that discharges of dredged or fill material associated with future proposals to construct and operate a mine to develop the Pebble deposit will have unacceptable adverse effects on anadromous fishery areas (including spawning and breeding areas) anywhere in the SFK, NFK, and UTC watersheds if the adverse effects of such discharges are similar or greater in nature and magnitude to the adverse effects of the 2020 Mine Plan. To prevent these unacceptable adverse effects, the Final Determination restricts the use for specification of certain waters of the United States in the SFK, NFK, and UTC watersheds as disposal sites for the discharge of dredged or fill material associated with future proposals to construct and operate a mine to develop the Pebble deposit with discharges of dredged or fill material into waters of the United States that would result in adverse effects similar or greater in nature and magnitude to the adverse effects of the 2020 Mine Plan. The Defined Area for Restriction encompasses certain headwaters of the SFK, NFK, and UTC watersheds where discharges associated with developing the Pebble deposit are likely. To the extent that future discharges are subject to the prohibition, the restriction will not apply. The aquatic resources that would be lost or damaged by the discharges evaluated by the EPA play an important role in supporting salmon populations in the SFK, NFK, and UTC watersheds. Such resources are also integral components of a larger ecosystem, which helps support the health of the Bristol Bay watershed, an area of unparalleled ecological value, boasting salmon diversity and productivity unrivaled anywhere in North America. The watershed is made up of intact, connected habitats—from headwaters to ocean—that support abundant, genetically diverse wild Pacific salmon populations. The Bristol Bay watershed’s Sockeye Salmon run is the world’s largest, producing PO 00000 Frm 00050 Fmt 4703 Sfmt 4703 7443 approximately half of the world’s Sockeye Salmon. The watershed’s Chinook, Coho, Chum, and Pink salmon populations are also significant. Bristol Bay’s salmon populations support world-class, economically important commercial and sport fisheries, as well as a more than 4,000-year-old subsistence-based way of life for Alaska Natives. Proposals to discharge dredged or fill material into waters of the United States associated with developing the Pebble deposit that are not subject to this final determination remain subject to all statutory and regulatory authorities and requirements under CWA Section 404. Considering the immense and unique economic, social, cultural, and ecological value of the aquatic resources in the region, including the fishery areas in the SFK, NFK, and UTC watersheds and their susceptibility to damage, the EPA will carefully evaluate all future proposals to discharge dredged or fill material in the region. Radhika Fox, Assistant Administrator. [FR Doc. 2023–02287 Filed 2–2–23; 8:45 am] BILLING CODE 6560–50–P ENVIRONMENTAL PROTECTION AGENCY [EPA–HQ–OGC–2023–0055; FRL–10631–01– OGC] Proposed Consent Decree, Resource Conservation and Recovery Act Citizen Suit Environmental Protection Agency (EPA). ACTION: Notice of proposed consent decree; request for public comment. AGENCY: In accordance with the Environmental Protection Agency (EPA) Administrator’s March 18, 2022, Memorandum entitled Consent Decrees and Settlement Agreements to Resolve Environmental Claims Against the Agency, this will provide notice and opportunity for public comment on a proposed Consent Decree in the matter of Statewide Organizing for Community eMpowerment v. U.S. Environmental Protection Agency, No. 1:22–cv–2562– JDB (D.D.C.). On August 25, 2022, a coalition of environmental organizations filed a complaint in the United States District Court for the District of Columbia. In the complaint, Plaintiffs allege that EPA has violated section 2002(b) of the Resource Conservation and Recovery Act (RCRA), by failing to perform its nondiscretionary duty under to review and, SUMMARY: E:\FR\FM\03FEN1.SGM 03FEN1

Agencies

[Federal Register Volume 88, Number 23 (Friday, February 3, 2023)]
[Notices]
[Pages 7441-7443]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-02287]


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ENVIRONMENTAL PROTECTION AGENCY

[EPA-R10-OW-2022-0418; FRL 10624-01-OW]


Final Determination To Prohibit the Specification of and Restrict 
the Use for Specification of Certain Waters Within Defined Areas as 
Disposal Sites; Pebble Deposit Area, Southwest Alaska

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of availability.

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SUMMARY: Pursuant to Section 404(c) of the Clean Water Act (CWA), the 
Environmental Protection Agency (EPA) is issuing a Final Determination 
to prohibit the specification of and restrict the use for specification 
of certain waters in the South Fork Koktuli River (SFK), North Fork 
Koktuli River (NFK), and Upper Talarik Creek (UTC) watersheds as 
disposal sites for certain discharges of dredged or fill material 
associated with developing the Pebble deposit, a copper-, gold-, and 
molybdenum-bearing ore body located in Southwest, Alaska.

FOR FURTHER INFORMATION CONTACT: For information concerning the Final 
Determination, contact Palmer Hough, Oceans, Wetlands and Communities 
Branch, Office of Water (4504-T), Environmental Protection Agency, 1200 
Pennsylvania Avenue NW, Washington, DC 20460; telephone number (202) 
566-1374; email address: [email protected]. For more information 
about EPA's efforts in Bristol Bay and to review the CWA Section 404(c) 
Final Determination, see https://www.epa.gov/bristolbay.

SUPPLEMENTARY INFORMATION:

I. Clean Water Act Section 404(c) Review Process

    The EPA's mission is to protect human health and the environment. 
The CWA, the objective of which is to ``restore and maintain the 
chemical, physical, and biological integrity of the Nation's waters,'' 
33 U.S.C 1251(a), is

[[Page 7442]]

essential to EPA's mission and establishes the basic structure for 
regulating discharges of pollutants into waters of the United States. 
To advance this overall objective, Section 301(a) of the CWA, 33 U.S.C. 
1311(a), prohibits the discharge of any pollutant by any person into 
waters of the United States except as authorized by specific provisions 
of the Act, including a permit issued pursuant to Section 402 or 404, 
33 U.S.C. 1342; 33 U.S.C. 1344. Section 404(a) of the CWA authorizes 
the United States Army Corps of Engineers (USACE) to issue permits for 
the discharge of dredged or fill material into waters of the United 
States at specified disposal sites. 33 U.S.C. 1344(a). Section 404(b) 
provides, subject to Section 404(c) of the CWA, each such disposal site 
shall be specified for each such permit by USACE. 33 U.S.C. 1344(a). 33 
U.S.C. 1344(b). Section 404(c) of the CWA authorizes the EPA to 
prohibit the specification (including the withdrawal of specification) 
of any defined area as a disposal site, and to deny or restrict the use 
of any defined area for specification (including the withdrawal of 
specification) as a disposal site, whenever it determines, after notice 
and opportunity for public hearings, that the discharge of such 
materials into such area will have an unacceptable adverse effect on 
municipal water supplies, shellfish beds and fishery areas (including 
spawning and breeding areas), wildlife, or recreational areas. 33 
U.S.C. 1344(c). The EPA's regulations at 40 CFR part 231 govern the 
Agency's exercise of its CWA Section 404(c) authority.

II. Proposed Mine at the Pebble Deposit

    The Pebble deposit in Southwest Alaska is a large, low-grade 
copper-, gold-, and molybdenum-bearing ore body deposit located at the 
headwaters of the largely undeveloped Bristol Bay watershed that 
underlies portions of the SFK, NFK, and UTC watersheds, which drain to 
two of the largest rivers in the Bristol Bay watershed, the Nushagak 
and Kvichak Rivers.
    In December 2017, Pebble Limited Partnership (PLP) submitted a CWA 
Section 404 permit application to USACE to develop a mine at the Pebble 
deposit that triggered the development of an Environmental Impact 
Statement (EIS) pursuant to the National Environmental Policy Act 
(NEPA). In response to the CWA Section 404 permit review and NEPA 
processes, PLP submitted a revised permit application to USACE in June 
2020 (i.e., the 2020 Mine Plan). On July 24, 2020, 85 FR 44890, USACE 
published a Notice of Availability for the Final EIS (FEIS) in the 
Federal Register and on November 20, 2020, USACE issued its Record of 
Decision (ROD) denying PLP's CWA Section 404 permit application on the 
basis that the 2020 Mine Plan would not comply with the CWA Section 
404(b)(1) Guidelines and would be contrary to the public interest. By 
letter dated November 25, 2020, USACE notified PLP that the proposed 
project failed to comply with the CWA Section 404(b)(1) Guidelines 
because ``the proposed project would cause unavoidable adverse impacts 
to aquatic resources which would result in Significant Degradation to 
aquatic resources.''

III. 2022 Proposed Determination

    In January 2022, consistent with its regulatory procedures for 
proposed determinations at 40 CFR 231.3(a), EPA Region 10 notified 
USACE, the Alaska Department of Natural Resources (ADNR), PLP, Pebble 
East Claims Corporation, Pebble West Claims Corporation, and Chuchuna 
Minerals (the Parties) of EPA Region 10's intention to issue a revised 
proposed determination because, based on a review of information 
available to that date, it continued to believe that the discharge of 
dredged or fill material associated with mining the Pebble deposit 
could result in unacceptable adverse effects on important fishery 
areas. EPA Region 10 provided the Parties with an opportunity to 
consult with the Region and to submit information for the record to 
demonstrate that no unacceptable adverse effects would result from 
discharges associated with mining the Pebble deposit or that actions 
could be taken to prevent unacceptable adverse effects on important 
fishery areas.
    ADNR, PLP, and Chuchuna Minerals submitted response letters, and 
the EPA met individually with PLP and Chuchuna Minerals. None of the 
Parties demonstrated to the satisfaction of EPA Region 10 that no 
unacceptable adverse effects would occur as a result of the discharge 
of dredged or fill material associated with mining the Pebble deposit. 
Thus, EPA Region 10 decided that the appropriate next step in this CWA 
Section 404(c) process was the publication of a revised proposed 
determination (the 2022 Proposed Determination).
    Accordingly, on May 26, 2022, EPA Region 10 published in the 
Federal Register a notice of availability and notice of public hearings 
for the 2022 Proposed Determination for the Pebble Deposit Area, 
Southwest Alaska issued pursuant to Section 404(c) of the Clean Water 
Act (CWA) (87 FR 32021). On June 16 and 17, 2022, the EPA Region 10 
held three public hearings. On June 30, 2022, the EPA published in the 
Federal Register a Notice of extension of public comment period and 
public hearing comment period through September 6, 2022 (87 FR 39091).
    On September 6, 2022, EPA Region 10 published in the Federal 
Register a notice to extend the time period provided in 40 CFR 231.5(a) 
to either withdraw the proposed determination or to prepare a 
recommended determination through no later than December 2, 2022, to 
help ensure full consideration of the extensive administrative record, 
including all public comments (87 FR 54498, September 6, 2022). In 
addition to the testimony taken at the hearings, EPA Region 10 received 
more than 582,000 written comments during the public comment period.

IV. Recommended Determination

    EPA Region 10 completed its review of the extensive administrative 
record, including all public comments, and the Regional Administrator 
determined that the discharge of dredged or fill material associated 
with developing the Pebble deposit would be likely to result in 
unacceptable adverse effects on anadromous fishery areas. Accordingly, 
EPA Region 10 prepared, and on December 1, 2022, transmitted to the 
EPA's Assistant Administrator for Water a Recommended Determination, 
along with the administrative record, for review and final action.
    On December 2, 2022, the Assistant Administrator for Water notified 
the Parties that she had received EPA Region 10's Recommended 
Determination and, consistent with the EPA's CWA Section 404(c) 
regulations at 40 CFR 231.6, provided them the opportunity to notify 
the EPA of their intent to take corrective action to prevent 
unacceptable adverse effects on anadromous fishery areas from certain 
discharges of dredged or fill material associated with developing the 
Pebble deposit.
    ADNR, PLP, USACE, and Chuchuna Minerals submitted written responses 
to the EPA's notification letters. ADNR also requested a meeting with 
the EPA. The EPA met with ADNR and other representatives from the State 
of Alaska. None of the Parties identified corrective action to prevent 
unacceptable adverse effects satisfactory to the Assistant 
Administrator for Water.
    After reviewing EPA Region 10's Recommended Determination; the 
extensive administrative record supporting the Regional Administrator's 
decision, including all public comments; letters from ADNR, PLP,

[[Page 7443]]

Chuchuna Minerals, and USACE; and considering the information provided 
during the Agency's meeting with the State of Alaska, the Assistant 
Administrator for Water has determined that certain discharges of 
dredged or fill material associated with developing the Pebble deposit 
into certain waters of the United States will have unacceptable adverse 
effects on anadromous fishery areas and affirms the Recommended 
Determination.

V. Final Determination

    Based on information in PLP's CWA Section 404 permit application, 
the FEIS, and the ROD, discharges of dredged or fill material to 
construct and operate the 2020 Mine Plan's proposed mine site would 
result in the permanent loss of approximately 8.5 miles (13.7 km) of 
anadromous fish streams, 91 miles (147 km) of additional streams that 
support anadromous fish streams, and approximately 2,108 acres (8.5 
km2) of wetlands and other waters in the SFK and NFK watersheds that 
support anadromous fish streams. These discharges would also result in 
streamflow alterations that would adversely affect approximately 29 
miles (46.7 km) of additional anadromous fish streams downstream of the 
mine site due to greater than 20 percent changes in average monthly 
streamflow.
    The EPA has determined that the large-scale loss of and damage to 
headwater streams, wetlands, and other aquatic resources that support 
salmon populations in the SFK and NFK watersheds from the discharge of 
dredged or fill material for the construction and routine operation of 
the 2020 Mine Plan will have unacceptable adverse effects on anadromous 
fishery areas in the SFK and NFK watersheds. The EPA has also 
determined that discharges of dredged or fill material for the 
construction and routine operation of a mine to develop the Pebble 
deposit anywhere in the mine site area that would result in the same or 
greater levels of loss or streamflow changes as the 2020 Mine Plan also 
will have unacceptable adverse effects on anadromous fishery areas in 
the SFK and NFK watersheds, because such discharges would involve the 
same aquatic resources characterized as part of the evaluation of the 
2020 Mine Plan.
    To prevent these unacceptable adverse effects, the Final 
Determination prohibits the specification of certain waters of the 
United States in the SFK and NFK watersheds as disposal sites for the 
discharge of dredged or fill material for the construction and routine 
operation of the 2020 Mine Plan, including future proposals to 
construct and operate a mine to develop the Pebble deposit with 
discharges of dredged or fill material into waters of the United States 
that would result in the same or greater levels of aquatic resource 
loss or streamflow changes as the 2020 Mine Plan. The Defined Area for 
Prohibition encompasses certain headwaters of the SFK and NFK 
watersheds and is delineated by the entirety of the Public Land Survey 
System (PLSS) quarter sections where mine site discharges were proposed 
in PLP's 2020 Mine Plan.
    Separately, the EPA has also determined that discharges of dredged 
or fill material associated with future proposals to construct and 
operate a mine to develop the Pebble deposit will have unacceptable 
adverse effects on anadromous fishery areas (including spawning and 
breeding areas) anywhere in the SFK, NFK, and UTC watersheds if the 
adverse effects of such discharges are similar or greater in nature and 
magnitude to the adverse effects of the 2020 Mine Plan.
    To prevent these unacceptable adverse effects, the Final 
Determination restricts the use for specification of certain waters of 
the United States in the SFK, NFK, and UTC watersheds as disposal sites 
for the discharge of dredged or fill material associated with future 
proposals to construct and operate a mine to develop the Pebble deposit 
with discharges of dredged or fill material into waters of the United 
States that would result in adverse effects similar or greater in 
nature and magnitude to the adverse effects of the 2020 Mine Plan. The 
Defined Area for Restriction encompasses certain headwaters of the SFK, 
NFK, and UTC watersheds where discharges associated with developing the 
Pebble deposit are likely. To the extent that future discharges are 
subject to the prohibition, the restriction will not apply.
    The aquatic resources that would be lost or damaged by the 
discharges evaluated by the EPA play an important role in supporting 
salmon populations in the SFK, NFK, and UTC watersheds. Such resources 
are also integral components of a larger ecosystem, which helps support 
the health of the Bristol Bay watershed, an area of unparalleled 
ecological value, boasting salmon diversity and productivity unrivaled 
anywhere in North America. The watershed is made up of intact, 
connected habitats--from headwaters to ocean--that support abundant, 
genetically diverse wild Pacific salmon populations. The Bristol Bay 
watershed's Sockeye Salmon run is the world's largest, producing 
approximately half of the world's Sockeye Salmon. The watershed's 
Chinook, Coho, Chum, and Pink salmon populations are also significant. 
Bristol Bay's salmon populations support world-class, economically 
important commercial and sport fisheries, as well as a more than 4,000-
year-old subsistence-based way of life for Alaska Natives.
    Proposals to discharge dredged or fill material into waters of the 
United States associated with developing the Pebble deposit that are 
not subject to this final determination remain subject to all statutory 
and regulatory authorities and requirements under CWA Section 404.
    Considering the immense and unique economic, social, cultural, and 
ecological value of the aquatic resources in the region, including the 
fishery areas in the SFK, NFK, and UTC watersheds and their 
susceptibility to damage, the EPA will carefully evaluate all future 
proposals to discharge dredged or fill material in the region.

Radhika Fox,
Assistant Administrator.
[FR Doc. 2023-02287 Filed 2-2-23; 8:45 am]
BILLING CODE 6560-50-P


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