ML11181A300

2011/06/30 Indian Point Lr Hearing - FW: Nmfs Questions Re. IP Thermal

ML11181A300
Person / Time
Site:	Indian Point
Issue date:	06/30/2011
From:	Office of Nuclear Reactor Regulation
To:	Division of License Renewal
References
Download: ML11181A300 (4)

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1 IPRenewal NPEmails From: Stuyvenberg, Andrew Sent: Thursday, June 30, 2011 2:31 PM To: Gray, Dara F Cc: IPRenewal NPEmails; Balsam, Briana; Logan, Dennis; Imboden, Andy; Turk, Sherwin

Subject:

FW: nmfs questions re. IP thermal Attachments:

questions re. IP thermal.docx DaraThisemailforwardsJulieCrocker'srequestsconcerningshortnosesturgeonandthermaleffects.You'llnotethatthisdocumentcontainstwocategoriesofrequests.ThefirstparagraphcontainsinformationNMFSexpectstoseeinNRC'sBAsupplement,whiletheremainderofthedocumentcontainsquestionsthatNMFSindicatesrelatetothe2011Swansonetal.report.Julie'semail,below,includesJulie'savailabilitythisweekandnextforateleconference,ifnecessary.

Pleasecontactmeifyouhaveanyquestions.Iwillbeintheofficeuntil4:45ptoday,outoftheofficetomorrow,andinnextweekTuesdaythroughFriday.

Best,Drew OriginalMessageFrom:JulieCrocker[1]Sent:Thursday,June30,20112:05PMTo:Imboden,AndyCc:Stuyvenberg,Andrew;Balsam,Briana;Logan,Dennis;JulieWilliams;MarkMurrayBrown

Subject:

nmfsquestionsre.IPthermal Hiall AttachedareNMFSquestionsrelatedtotheSwanson2011thermalplumereportandasummaryofwhatweanticipatethatNRCwouldconsiderinthesupplementtotheBA.PleaseforwardtoEntergyasappropriate.Iamintheofficeuntil3:30today,in812tomorrowandthenonlyinTuesandWedsnextweek,butwillbecheckingemailthroughoutifNRCorEntergyhasanyquestionsregardingthisI'mhappytohaveacall,etc.

Thanksandenjoythelongweekend!

Julie Hearing Identifier: IndianPointUnits2and3NonPublic_EX Email Number: 2718 Mail Envelope Properties (AF843158D8D87443918BD3AA953ABF782B680FF52F)

Subject:

FW: nmfs questions re. IP thermal Sent Date: 6/30/2011 2:30:59 PM Received Date: 6/30/2011 2:31:01 PM From: Stuyvenberg, Andrew Created By: Andrew.Stuyvenberg@nrc.gov Recipients: "IPRenewal NPEmails" <IPRenewal.NPEmails@nrc.gov>

Tracking Status: None "Balsam, Briana" <Briana.Balsam@nrc.gov>

Tracking Status: None "Logan, Dennis" <Dennis.Logan@nrc.gov> Tracking Status: None "Imboden, Andy" <Andy.Imboden@nrc.gov> Tracking Status: None "Turk, Sherwin" <Sherwin.Turk@nrc.gov>

Tracking Status: None "Gray, Dara F" <DGray@entergy.com> Tracking Status: None

Post Office: HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 1432 6/30/2011 2:31:01 PM questions re. IP thermal.docx 16856 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:

1ShortnosesturgeonandI.P.ThermalPlume-NMFSQuestions06 30 11 IntheBiologicalOpinion,NMFSwillneedtomakeadeterminationontheeffectstoshortnosesturgeonfromthedischargeofheatedwaterfromtheIndianPointfacility.Atthistime,weanticipateusingthebestavailableinformationtodothefollowing:(1)describethethermalplumeintermsthatarebiologicallyrelevanttoshortnosesturgeon(tempsthatcouldbestressfuland/orlethal);(2)determinehowthethermalplumewillaffectindividualshortnosesturgeon(willtheyavoidtheheatedareaoraportionofit,orcantheynotavoiditandwillbeexposedtoeffectswhileswimmingthroughit);(3)ifshortnosesturgeonarelikelytoavoidtheplumedeterminewhattheeffectofthisavoidancebehaviorwillbe(howfar"outoftheirway"wouldsturgeonneedtogotoavoidtheheatedwaterandwhateffectwouldthishaveonindividuals);(4)iftheplumecannotorwillnotbeavoidedwhatistheeffectoftheexposure(physiologicalstress(doesthishaveanyimpactonfitnessofindividuals?),injury,mortality),and,(5)doesthedischargeaffecttheabilityofshortnosesturgeontocarryoutessentialbehaviorsintheactionarea(foraging,resting,migrating-nospawningorrearingofearlylifestagesoccursintheactionarea).NMFSexpectsthattheNRC'ssupplementalBAwillconsideralloftheabove.

NMFShasreviewedtheSwansonetal.(2011)reportonthetriaxialthermalplumestudyandalsounderstandsthatNYDEChasreviewedthereportandotheravailablematerialsandhasdeterminedthatwatertemperatureswillonlyexceed90°Finanareanogreaterthan75acres,andattimeswhenambienttemperaturesaregreaterthan83°Fthethermalplumewillnotcauseanincreaseintemperaturegreaterthan1.5°Fexceptwithinthis75acremixingzone.NMFShasthefollowingremainingquestions: Atwhatdistancefromtheoutfalldotemperaturesreturntoambient? ItisNMFSunderstandingfromtheSwansonreportthatthethermalplumeispresentonlyatthesurfaceoftheriver.Pageiiofthereportnotesthattemperaturesgreaterthan90°Fwereobservedata4 ftdepthforthreestationsclosertothedischargeandatonestationclosesttothedischarge(downto15feet).Atwhatdistancefromtheoutfallarethesestationslocatedandhowdeepisthewateratthesestations?Whatwerethemaximumtemperaturesrecordedatthesedepths?Atwhatdistancefromthesurfaceistheplumenolongerdetectable?Whatarewaterdepthsinthisarea? Arethereanyanticipatedeffectstoshortnosesturgeonprey(largelybenthicinvertebrates)fromthedischargeofheatedeffluentorarethesespeciesalwaysoutsideoftheareaofinfluenceofthethermalplume? 28.7°C(83.66°F)hasbeenidentifiedastheuppersafethermallimitforshortnosesturgeon(Ziegweidetal.2007).Fieldinformationsuggeststhatshortnosesturgeonarelikelytoavoidareaswithtemperaturesgreaterthan28°C(82.4°F).Pleasedescribetheareawheretemperaturesgreaterthan28°Cwillbeexperienced. 33.7°C(92.66°F)hasbeenidentifiedasthetemperatureatwhichshortnosesturgeonwillloseequilibriumandhasbeendescribedasthecriticalthermalmaximumforshortnosesturgeon(Ziegweidetal.2007).ThelethaltemperatureforshortnosesturgeonisdescribedinZeigweidetal.(2007)as34.8°C(94.64°F).Pleasedescribeanyareaswherewatertemperatureswillmeetorexceedthesetemperatures.

2 p.62oftheSwansonreportdescribesthemaximumtemperaturesmeasuredatthedischargeasrangingfrom94°F-103°F.Isitreasonabletoconsiderthatthetimeperiodcaptured(July-midAugust2010)isrepresentativeofthemaximumtemperaturesthatwouldbeexpectedovertheextendedoperatingperiod?Theinformationonp.62alsoseemstoindicatethattemperaturesatthermistorstation25reached95.1°F.Isthisthemaximumtemperaturerecordedatanyofthemeasuringstations? p.92oftheSwansonreportnotesthatplanteffluent"oftenexceeded100°Fatthedischarge,butsuchhightemperaturesweresignificantlydiminished(toapproximately85°Fbythetimereachedstation27,approximately900feetfromthedischarge"andthattheinfluencefromthethermalplumewas"barelyevident"bythewesternsideofthechannel.Pleasedescribethetemperatureconditionsatthebottomoftheriveralongthesedistances;aretheyeverinfluencedbythethermalplume?Atwhatdistancefromthesurfacedoestheinfluenceoftheplumestopbeingdetectable? ItisNMFSunderstandingfromreadingtheSwansonreportthattheIndianPointplumedoesnotinteractwiththethermalplume(s)extendingfromanyotherpowerfacility,includingBowline.Pleaseconfirmthatthisisanappropriateunderstanding. Doesthethermalplumehaveanyeffectondissolvedoxygenlevelsintheriver?Ifso,whateffectdoesthathaveonshortnosesturgeonwhichmayexperiencestressatDOlevelslessthan5mg/landarelesstolerantofhightemperaturesatdecreasedlevelsofDO(seeNiklitchek2001).