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| Entered date | Event description | |
|---|---|---|
| ENS 55567 | 9 November 2021 13:33:00 | At 1040 hours EST, November 9, 2021, the site reported a violation of the station National Pollutant Discharge Elimination System permit. The 24-hour environmental report addressed an unauthorized discharge of 7,245 gallons of non-radiological water that was pumped into a storm drain to de-water an on-site electrical vault located outside of the protected area. This discharge occurred from 0800 to 1230 hours on November 8, 2021. Sampling and analysis of the vault water is in progress to assess for the presence of pollutants. This notification is being made solely as a four-hour, non-emergency notification for a Notification of Other Government Agency. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi). There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. The licensee notified the U.S. Environmental Protection Agency and the Commonwealth of Massachusetts Department of Environmental Protection. |