ML17228A356

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NPDES Noncompliance Notification:On 930915,midnight Discharge Canal Sample Collected During Biocide Application Indicated Concentration of 0.53 Ppm.Communications Between Individuals Involved Increased
ML17228A356
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 11/01/1993
From: SAGER D A
FLORIDA POWER & LIGHT CO.
To:
References
L-93-280, NUDOCS 9311050192
Download: ML17228A356 (5)


Text

DOCKET05000335ACCELERAT DOCUMENTDISTRIVTIONSYSTEMREGULATINFORMATION DISTRIBUTIO STEM(RIDS)ACCESSION NBR:9311050192 DOC.DATE:

93/11/01NOTARIZED:

NOFACIL:50-335 St.LuciePlant,Unit1,FloridaPower&LightCo.AUTH.NAMEAUTHORAFFILIATION SAGER,D.A.

FloridaPower6LightCo.RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

NPDESnoncompliance notification:on 930915,midnight discharge canalsamplecollected duringbiocideapplication indicated concentration of0.53ppm.Communications betweenindividuals involvedincreased.

DISTRIBUTION CODE:IE23DCOPIESRECEIVED:LTR ENCLSIZE:TITLE:Environmental EventReport(perTechSpecs)NOTES:RECIPIENT IDCODE/NAME PD2-2LANORRISiJINTERNAL:

ACRSNRR/PMAS/ILRB EGW.TEE01EXTERNAL:

NRCPDRCOPIESLTTRENCL331155111111RECIPIENT IDCODE/NAME PD2-2PDNRR/DRSS/PEPB OGC/HDS3RGN2NSICCOPIESLTTRENCL1111111111NOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.504-2065)

TOELIMINATE YOURNAMEFROMDISTRIBUTION LISTSFORDOCUMENTS YOUDON'TNEED!TOTALNUMBEROFCOPIESREQUIRED:

LTTR17ENCL17

~gP.O.Box128,Ft.Pierce,FL34954-0128 November1,1993/L-93-28010CFR50.36b10CFR50.4EPP3.2.3U.S.NuclearRegulatory Commission

,Attn:DocumentControlDeskWashington, DC20555Re:St.LucieUnit1DocketNo.50-335Deviation oftheNPDESPermitOnSeptember 15,1993,thebiocide(Clam-trol, CT-1)concentration inthedischarge canalwasobservedtobe0.53ppmwhichexceedsthe0.4ppmmaximumlimitintheplant'sNationalPollutant Discharge Elimination System(NPDES)Permit.Thisdeviation isbeingreportedtotheEnvironmental Protection AgencyintheMonthlyDischarge Monitoring Report.AcopyoftheeventisattachedandisbeingsentpursuanttoSection3.2.1oftheSt.LucieUnit1Environmental Protection Plan.Shouldyouhaveanyquestions onthisinformation, pleasecontactus~Verytrulyyours,D.A.agerVicePesidentSt.LiePlantDAS/CDW/kw cc:StewartD.Ebneter,RegionalAdministrator, RegionII,USNRCSeniorResidentInspector, USNRC,St.LuciePlantAttachment DAS/PSLf1011-939311050192 931101PDRADOCK05000335S'PDRanFPLGroupcompanyZPP ftE~VP~~ln~'pp FLORIDAPOWERANDLIGHTCOMPANY-STLUCIEPLANTNPDESPERMITNUMBERFL0002208 OSN001MONITORING PERIOD-SEPTEMBER 1,1993THROUGHSEPTEMBER 30,1993OnSeptember 15,1993,themidnightdischarge canalsamplewhichwascollected duringabiocideapplication (Clam-trol, CT-1)indicated aconcentration of0.53ppm.Thisvalueexceededthe0.4ppmmaximumlimitintheplant'sNPDESpermit.Analysesoffoursampleswhichwerecollected atfourhourintervals priortotheeventallyieldedvaluesof(0.3ppm.Problemshadbeenexperienced attheclayinjection station(clayisinjectedtodeactivate thebiocide)justprior"tothemidnightsample.Theseproblemswerecorrected withinseveralminutesoftheirdiscovery butapparently enoughtimehadelapsedtocausetheexceedence.

Thetworemaining samplescollected duringtheapplication bothyieldedvaluesof(0.3ppm.The0.53ppmconcentration notedinthedischarge canalwaswellbelowtheNoEffectLevelof1.2ppmwhichwasestablished forthisbiocide.Thisfact,plusthedilutionwhichoccursfollowing discharge fromtheY-portandmulti-port diffusers upondischarge totheAtlanticOcean,indicatethatthiseventshouldnothavecausedanysignificant environmental damage.Corrective actionsincludeincreased communications betweentheindividuals involvedinthebiocideinjection station,theclayinjection station,andthechemistry department.

Ifanomalies occurinanyarea,biocideinjection willbeimmediately terminated untilthecondition iscorrected.

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