ML13360A192: Difference between revisions

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{{Adams
#REDIRECT [[L-2013-328, St. Lucie, Units 1 & 2, Environmental Protection Plan Report Unusual or Important Environmental Event - Turtle Mortality]]
| number = ML13360A192
| issue date = 12/04/2013
| title = St. Lucie, Units 1 & 2, Environmental Protection Plan Report Unusual or Important Environmental Event - Turtle Mortality
| author name = Katzman E S
| author affiliation = Florida Power & Light Co
| addressee name =
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000335, 05000389
| license number =
| contact person =
| case reference number = L-2013-328
| document type = Environmental Report, Letter
| page count = 2
}}
 
=Text=
{{#Wiki_filter:0FPL.December 4, 2013L-2013-328 10 CFR 50.410 CFR 50.36.bEPP 4.1U.S. Regulatory Commission Attn: Document Control DeskWashington, DC 20555RE: St. Lucie Units 1 and 2Docket Nos. 50-335 and 50-389Environmental Protection Plan ReportEvent Date: November 26, 2013Unusual or Important Environmental Event -Turtle Mortality On November 26, 2013, a dead juvenile green sea turtle (Chelonia mydas) wasrecovered from the east side of the St. Lucie Plant Intake cooling canal five-inch barriernet. A necropsy was performed on November 27, 2013, to determine cause of mortality.
The determination is that the mortality was causal to plant operations due to forcedsubmersion.
The attached report is being submitted pursuant to the requirements of Section 4.1 ofthe St. Lucie Units 1 and 2 Environmental Protection Plans to provide the description ofa reportable sea turtle mortality that was causal to plant operations at the St. Lucie Plant.Sincerely, Eric S. KatzmanLicensing ManagerSt. Lucie PlantESK/rcsAttachment cc: FDEP Siting Office-~----Florida Power & Light Company6501 S. Ocean Drive, Jensen Beach, FL 34957 Ill,St. Lucie Units 1 and 2 L-2013-328 Docket Nos. 50-335 and 50-389 Attachment Environmental protection Plan Report Page 1 of 1Event Date: November 26, 2013Unusual or Important Environmental Event -Turtle Mortality DESCRIPTION OF THE EVENTOn November 26, 2013 a dead green sea turtle (chelonian mydas) was recovered fromthe east side of the St. Lucie Plant Intake Canal five-inch turtle barrier net. The sea turtlewas sent the following day to Nancy S. Mettee, DVM for necropsy.
The necropsy confirmed that the sea turtle mortality was due to forced submergence, thus causal to plant operations.
The limits for sea turtle injuries and mortalities resulting from plant operations were setby the National Marine Fisheries Incidental Take Statement, issued and clarified by theNRC in 2001. These limits have not been exceeded.
CAUSE OF EVENTOn the night of November 25, 2013 the plant experienced a significant intrusion event ofalgae that resulted in the submersion of the plant's 5-inch turtle exclusion net. Theamount of algae caused an increase of the water velocity in and adjacent to the net asthe net was loading with algae. Apparently, as the net submerged the turtle was caughtat the top of the net and could not escape the force/velocity of the water.CORRECTIVE ACTIONDivers, suction hoses, pumps, and filtering systems were deployed to commencerecovery activities to remove algae deposition, and restore the net to its designconfiguration.
The responders were in the water removing debris from the net within twohours of notification.
Recovery activities resulted in placing the net above water withinfour hours of diver notification, and the net was fully restored by November 25, 2013.ACTIONS TO PRECLUDE FUTURE EVENTSBiota removal equipment is staged at the 5-inch turtle net during known times ofincreased intrusion potential (6 months per year). A contracted dive company providesexpeditious response with personnel trained to mitigate these intrusion events. Also, thesite operates in a conservative manner by scheduling staff biologists to perform nightmonitoring of intrusion rates and the net configuration during known or suspected nightintrusion activity.
These increased surveillances have resulted in the deployment ofdivers during the night to mitigate intrusion.
AGENCIES NOTIFIEDThe Florida Fish and Wildlife Conservation Commission were notified on November 26,2013 in accordance with Marine Turtle Permit# MTP-125 and the Site Environmental Protection Plan.A notification was made to the NRC on November 26, 2013 per the requirements of 10CFR 50.72(b)
(2) (xi).}}

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