ENS 45116

v t e ENS Event
20:22 Jun 6, 2009
Title	Offsite Notification Made Due To Elevated Levels Of Tritium
Event Description	This notification is being made pursuant to 10 CFR 50.72(b)(2)(xi) due to the fact that Exelon Nuclear has informed the Illinois Emergency Management Agency and Illinois Environmental Protection Agency of recent groundwater monitoring results at Dresden Station. This notification was made at 15:22 hours CDT on June 6, 2009. As part of the Station's continuing environmental monitoring and sampling program, sample results from some of the monitoring wells have indicated elevated levels of tritium requiring notification of the State of Illinois. Based on sampling data obtained to date, the tritium in the groundwater is confined to Exelon property and poses no threat to public health or safety. The IEPA/ IEMA regulation requires notification when a release to soil, groundwater, or surface water goes off-site at greater than 200 pCi/L or remains on-site greater than 0.002 Curies. Based upon the monitoring well results and the volume and concentration of groundwater infiltration into the nearby storm sewer, it is likely that the 0.002 Curie on-site threshold has been exceeded. The Station continues to track this issue by monitoring the existing wells and initiation of mitigative actions to contain any release and ensure it remains on-site. At this time, the source of the tritium has not been identified. The licensee has notified the NRC Resident Inspector.

ENS 45116 +/-
Where
Dresden Illinois (NRC Region 3)
Reporting

10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
Time - Person (Reporting Time:+-3.05 h-0.127 days <br />-0.0182 weeks <br />-0.00418 months <br />)
Opened:	Patrick Haarahoff 17:19 Jun 6, 2009
NRC Officer:	John Knoke
Last Updated:	Jun 6, 2009
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v • d • e

v t e Emergency Notification System
Dresden with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
WEEKMONTHYEAR2022-02-01T16:25:00 [Table view]
[ENS list for Dresden]

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