ENS 40908

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v t e ENS Event
16:10 Jul 29, 2004
Title	Offsite Notification Due to Raw Sewage Discharge to Lake Ontario
Event Description	A report was received in the Unit 2 Control Room by Site personnel that raw sewage appeared to be seeping from a manhole inside the protected area. The Fire Department and Environmental Department were dispatched to the area. It was reported back to the Unit 2 Control Room that raw sewage was seeping from the manhole and filling nearby ditch and flowing to a storm sewer. Due to the leakage, Nine Mile Point entered their HAZMAT response procedure. Initial investigation for the sewage release found the sewage lift station pumps' control switch in the "OFF" position preventing the pumps from operating. The lift station pumps were restarted and the discharge from the manhole stopped. Lift station pumps continue to function properly and cleanup efforts are underway. Investigation is underway on why the lift station pump control switches were in the off position. Based upon initial calculations, it was determined approximately 3000 gallons of raw sewage was released from manhole to a nearby storm sewer which discharges to Lake Ontario. Nine Mile Point has notified the Oswego County Department of Health and New York State Department of Environmental Conservation. No hazards exist to offsite personnel and no wildlife has been adversely affected. The Licensee notified the NRC Resident Inspector, Local and State agencies. * * UPDATE AT 1700 EDT ON 8/27/04 FROM CHRIS SKINNER TO S. SANDIN * * * The licensee is retracting this report based on the following: Subsequent investigation has determined that approximately 400 gallons of raw sewage was released into the storm drainage ditch. There was no active flow in the storm drainage ditch at the time of the event. Samples indicate that the raw sewage did not reach the lake. The event was reclassified as a State Pollutant Discharge Elimination System Permit Upset with minor impact to the environment. Therefore, the event notification from July 29, 2004 is retracted. The licensee informed the NRC Resident Inspector. Notified R1DO (Cobey).

ENS 40908 +/-
Where
Nine Mile Point New York (NRC Region 1)
Reporting

10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
Time - Person (Reporting Time:+-0.4 h-0.0167 days <br />-0.00238 weeks <br />-5.4792e-4 months <br />)
Opened:	Rager Orzell 15:46 Jul 29, 2004
NRC Officer:	Chauncey Gould
Last Updated:	Aug 27, 2004
40908 - NRC Website
v • d • e

v t e Emergency Notification System
Nine Mile Point with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
WEEKMONTHYEAR2021-07-19T18:58:00 [Table view]
[ENS list for Nine Mile Point]

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