L-2025-080, 2024 Annual Environmental Operating Report
| ML25112A032 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 04/21/2025 |
| From: | Mack K NextEra Energy Seabrook |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| L-2025-080 | |
| Download: ML25112A032 (1) | |
Text
NEXTera~
ENERGY~
SEABROOK U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Re:
Seabrook Station Docket No. 50-443 2024 Annual Environmental Operating Report April 21, 2025 L-2025-080 10 CFR 50.4 In accordance with Section 5.4.2 of the Seabrook Station Environmental Protection Plans (EPP), attached is the Annual Environmental Operating Report for the calendar year of 2024.
If you have any questions regarding his submittal, please contact Maribel Valdez, Fleet Licensing Manager, 561 -904-5164.
Sincerely, K~~
Director, Licensing and Regulatory Compliance Attachment cc:
USNRC Regional Administrator, Region I USNRC Project Manager, Seabrook Station Nuclear Plant USNRC Senior Resident Inspector, Seabrook Station Nuclear Plant NextEra Energy Seabrook, LLC PO Box 300, Seabrook, NH 03874
ATTACHMENT Seabrook Station Annual Environmental Operating Report (2 pages follow)
Seabrook Station Annual Environmental Operating Report January 1, 2024 to December 31, 2024 Environmental Monitoring Program The following provides a summary of the rep01is related to Seabrook Station Aquatic Monitoring in accordance with Subsection 4.2 of the Environmental Protection Plan.
NextEra Energy Seabrook Letter SBK-L-25013, "2024 Hydrological Monitoring Rep01i" dated February 21, 2025. This letter was submitted to the EPA in accordance with the NPDES Permit and demonstrated compliance with the NPDES Permit limits on the the1mal component of the cooling water system discharge from Seabrook Station in 2024. Seabrook Station's NPDES Permit sets thermal discharge limits during station operation. Specifically, the thermal component of the discharge cannot increase the surface temperature in the near-field jet-mixing region by more than 5° F. During 2024, the temperatures measured in the jet-mixing region were below the limit of 5° F.
NextEra Energy Seabrook Letter SBK-L-25012, "2024 Chlorine Minimization Repo1i" dated February 21, 2025. This letter was submitted to the EPA in accordance with the NP DES Permit and demonstrated compliance with the NPDES Permit limits on the chlorine levels discharged by Seabrook Station's cooling water system. During 2024, chlorine levels discharged from Seabrook Station, measured as the Total Residual Oxidant (chlorine), were below the NPDES Permit limits of 0.2 ppm daily maximum and 0.15 ppm monthly average.
NextEra Energy Seabrook Letter SBK-L-24059, "2024 Environmental Monitoring Mid-Year Report" dated July 30, 2024. This letter was submitted to the EPA in accordance with the NPDES Permit and provided a status thru mid-year of the continuing 2024 Biological, Hydrological and Chlorination Monitoring Programs. The rep01i concluded that Seabrook Station's Environmental Monitoring Program continues to demonstrate that Seabrook Station has not had a significant impact on the balanced indigenous populations in the coastal waters of New Hampshire.
NextEra Energy Seabrook Letter SBK-L-24071, "2023 Environmental Monitoring Rep01i" dated August 30, 2024. This letter was submitted to the EPA in accordance with the NPDES Pe1mit and describes the environmental monitoring program for Seabrook Station. The 2023 Environmental Monitoring Rep01i provides a comparison of 2023 environmental monitoring data to previous years and continues to demonstrate that Seabrook Station has not had an adverse effect upon the balanced indigenous populations in the Hampton-Seabrook area.
Changes in Station Design or Operation, Tests and Experiments Involving a Potentially Unreviewed Environmental Question During 2024, there were no changes in Station design or operation, tests or experiments that involved a potentially unreviewed environmental question. Environmental screenings of the changes were performed as required by the Seabrook Station Environmental Compliance Manual.
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Environmental Protection Plan Noncompliances During 2024 there were no instances of noncompliance with the Environmental Protection Plan.
Nonroutine Reports There were no nomoutine repmis submitted during 2024 per Section 5.4.2 of the Environmental Protection Plan.
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