ML14007A092

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Response to NRC Request for Additional Information, Dated November 21, 2013, Related to the Byron and Braidwood Stations, Units 1 and 2 License Renewal Application, Byron Station Applicant'S Environmental Report. Part 9 of 15
ML14007A092
Person / Time
Site: Byron, Braidwood  Constellation icon.png
Issue date: 12/19/2013
From:
Exelon Generation Co, Exelon Nuclear
To:
Office of Nuclear Reactor Regulation
Shared Package
ML14007A078 List:
References
RS-13-282
Download: ML14007A092 (82)
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Text

{{#Wiki_filter:I ATTACHMENT TO COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT For Exelon Byron Station Permit 1L0048313 August 2010 BLOWDOWN TEMPERATURE MONITORING: Date 08/07/10 08/14/10 08/21/10 08/28/10 Calculated Maximum Allowable Blowdown Temp. (Degrees F)Maximum Actual Blowdown Temp.(Degrees F)120 120 120 120 89.5 93.6 92.0 88.5 Note: Station procedures derive the Calculated Ma.xmum Allowable Blowdown Temperature based on existing Rock River temperature and a calculated maximum river temperature increase. When the arithmetic sum of these values exceeds 120 degrees Fahrenheit, the Calculated Maximum Allowable Temperature limit defaults to 120 degrees Fahrenheit. HYDRAZINE MONITORING: There were no steam generator chemical cleaning solutions (or associated rinses)containing hydrazine discharged to the Cooling System Blowdown during the month of August 2010.TOTAL QUANTITY DISCHARGED: N/A TOTAL DURATION OF DISCHARGE: N/A k:byr-cb\byrondb\clcrk\MonddyDMRWWWI\AuglO ATTACHMENT TO COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT (Page 2)For Exelon Byron Station Permit I.0048313 August 2010 COMMENTS: 1. The weekly halogen concentration curves and daily halogen dosing time reports are attached.2. Bromine was not used this month.3. There was no discharge of steam generator chemical cleaning wastewater containing hydrazine in this month.4. Flow existed through this outfall 31 of 31 days.0 0 k:byr-chbyraridbkkrL-%MonthlyDMRanwb0lALkgiO EXELON BYRON STATION Permit IL0048313 WEEKLY HALOGEN DOSING INFORMATION(Minutes)08/01/10 35 35 O002/10 35 35 08/03/10 35 35 08/04/10 40 40 08/05110 40 40 08/06/10 38 40 08/07/10 40 38 08/08/10 38 39 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 08/02/10 Time: 11:23 Analyzed by: S.S.C.Reviewed by: D. M.Unit: I Note: Thelimitofdetetion frteinstrumentaststdin teStatinLabrtoryis0.02mg4 All values less than this limit ar reported for information only.E.I 0 25 50 75 100 125 Minutes 150 EXELON BYRON STATION Permit IL0048313 WEEKLY HALOGEN DOSING INFORMATION (Minutes)08/09/10 40 39 08/10/10 37 38 08/11/10 38 40 08/12/10 38 40 08t13110 40 40 08/14/10 40 41 08/15/10 39 37 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 08/09/10 Time: 11:27 Analyzed by: J.P.Reviewed by: D. M.Unit: 2 Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L All values less than this limit are reported for information only.E ft 1 -~ r~ r ~r 1~T -T71r T I-I I I FL --- 4:cf.00 0 25 50 75 Mlnukm 100 125 150 EXELON BYRON STATION Permit 1L0048313 WEEKLY HALOGEN DOSING INFORMATION (Minutes)I-I I U-2 08&16/10 30 30 08117/10 40 40 08/18/10 40 40 08/19/10 40 40 08/20/10 40 40 08/21/10 40 40 08/22/10 40 l 40 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 08/16/10 Time: 10.49 Analyzed by: M.H.Reviewed by: D. M.Unit: I Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L All values less than this limit are reported for information only.CL I ! J I 0 25 50 75 100 125 Minutes 150 EXELON BYRON STATION Permit 1L00483 13 WEEKLY HALOGEN DOSING INIIRMATION (Minutes)IU-I I-a 08=23/10 42 42 08024/10 40 40 08/25/10 40 40 0&126/10 39 40 08/27/10 40 40 08/28/10 40 40 08/29/10 40 40 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 08/23/10 Time: 12:23 Analyzed by: J.W.Reviewed by: D. M.Unit: 2 Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L. All values less than this limit are reported for information only.1 " mbn ,.11 Ar TIIRC6ýM I I q i i i 1 !0 25 50 75 100 125 150 Minutes 9 EXELON BYRON STATION Permit 1L0048313 WEEKLY HALOGEN DOSING INFORMATION I~(Minutes) 108/30/10 I40 37" 09/31/10 30 f 402 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 08/31/10 Time: 10:32 Analyzed by: D.C.A Reviewed by: D. M.Unit: I Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L. All values less than this limit are reported for information only.E ft 0 25 50 75 100 125 Minuts 150 JExelkn.Exelon Geneation Cornpany, tIC www.exeloncorp.com NuClear Byron Station 4450 North German Church Road Byron. IL 61010-9794 October 19,2010 LTR: BYRON 2010-0126 File: 2.09.0411 1.10.0101 Illinois Environmental Protection Agency Water Pollution Control Compliance Assurance Section #19 1021 North Grand Avenue East P.O. Box 19276 Springfield, IL 62794-9276 Subject Byron Station Monthly Discharge Monitoring Report SIn accordance with National Pollutant Elimination System (NPDES) Permit Number IL0048313, Issued September 8, 2000, we are submitting the Discharge Monitoring Report for Byron Station, Units I and 2. This report covers the period of September 1, 2010 through September 309'2010.If there are any questions regarding this report, please contact Mr. Stanley Kerr, Chemistry Manager, at (815) 406-3200.Respectfully, Bra--dley 4J. dm Plant Manager Byron Nuclear Generation Station BJA\ZC\sdk Attachments NATIONAL POLWJTANt DOISCMAE B.MNATION SYSTBM (NOES)amMu VOWuFW REPORT PM Ocnum0 PEATE ALAfRS NAME Enn Geneakn Co.. LLW ADDREW 4W0 WOis Red WaaewwIf. L MWS LOOMSI A1 0 NM~0 DMiNRALin MODUMTE (M A)FAOUJTY Symu Mjaise Peww Shian LWATON 4450 Nwml Guman Chut Road Syran L 61010 Fmm- I MONffOFW4G PER=(X YEARM OMTH DAY I"AR -oNTH DAY I 1 0 l0 1 9 0 Id To- I I o [ 0 0 3 1 0*,*NO .SICL*HAR0E ..g t:,14 AD4 NATM. POWJUTANT DlSOCARGE EA41NATION SYSTEM "IDES)MOW m w, WOR PoQ ocn00 NAME ExeUon OsfiaOm Co.. LWC AWREM 4= Wh*ft RoAW W&Y~nWW L 006M FAMUM By=o MOM&in POM btdo WrATION 4450 MOM O..-. Chum Road Oym^ .L 61010 1.00433 MAJO AN 0 (O1USN01)I DISCHARGENUMBER FF MONffO)lNG PEROI , EAR MONloi AY I I YEAR I MONi I lAY Foum I1 0 0 10 0 1 1 T0:h 1 0 10 19 13 10 DINIIONALU ROUOERATEF (=IA)l~pl#4w-0. *~noAmwG NATIONAL POLLUTANT DISCHARGE ELIMINATION S'VSTWI (NPOES)mONCHR MOIOuRING wIVR PM WrEUTEE PWNAMEO0AE NAME Eian OWSNtw Co. LLW AWAEn 4X Wbd Flad WarvervWW L lSM usasis PE PinT-301 0 I --CAMNMM'-p-COOFW F -F§ML SIP WPLUAIIT001111111 0013)U"-IN@*t MO OcH*MW J *FACILITY Byro M~i~ POWN 8116 WA MOT A LOCATION 4460 North Gueme Chswoh Red Frm I 10 01 1011 BPXn L 61010 I YEA IM14h mom Y Tao , I o ro 1 13 1 0 LEMY z ; 7-12 4: (MOD NATKIONA POLUTANT DISMCHARE MJMINATION SYSTEM (NPDES)Docvimm OCFnt01 WEMITEE NA&EJADDREMS NAME E 'mb. Owwatin Co.. LLW ADRS 4=0 WfiAW Read WanfwwU. L Was FACILITY DPWu st~h Powel 81mb.LOCATION 4460 No w w Omsn h Road Wpon L 61010 I NUM-E I ~col,~I DICAG NUBE HAXIR] (SMie 0)P -UaL II llMONITOFM PERIO YEAR :WMON DAY I IMol lolI DAY Frmi I 1 0 I0 1 9 1 0 1 1 1 Ta~ I I 10 1 01 9 1 3 1 0 WP (ORMERoIC) °°wNO DICMARGE - NATIONAL PQLWJTAINr DISCHARGE EUAt4ATION SYSTEM (NPDES)OCOuOM PE*TTEHME(ADWES ttAE EWWa Ogn.akn Cm LLW ADOMB 4600t WW 0d R WWWftw. LUN FAMIMl DIMw k~idaa Powo ftiwi WCATION 4460 Nmm h G.-. Chuh RPAW By=%. L 61400 I L004ms -I I BU NUMNER I I cm aI I .--- -3 I I -**VW NMIME NAMO (am ")F.P

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EXCUIEam)MO YA&W0Pl F,1 tMJ"l oATHORREDAGN DATE 10 19 MONTH DAY 1. Raw aifed ftaugh Oft " o fd 30 day. dain Via mmiii EPA Poim 33M0. (Paw S"3 SO PAGE IOF I -E~T MAWDOE NAME Eian Gamalon Co.. LLC ADOFM 4301)WNW PoAN Wa~nWMS. L UNS NAT11NA POUJTANT DISHARGE EUMUNATION SYSTEM (NPOES)mOtrM TOMOROom w(o) ocpm L00413 Em 0(US0)PEFAr NMBUER DISCHARGE NUMER F -FOUL STOMAWA1M (POME 0011IQ MOMUEOP&O6PERGO STCRWAIU FACr yr Midow Pawsftibn I EA i N 1 DAY I I YEAR IMONTH DAY I LOCATION MbON ofOumonCHWOh PAWa Fol r 01 o I o 0 1 I To: S 0 0 1 9 3 1 0@Vm. L 61010 a a NO macHARSHM [J1 .hIENTI LDSI) 0 0P ,ATVOA PO.LUTANT 0SSCHAGE i.NATION SYSTEM (MOMES)DMO lMONOnWolMm OR RTO"i1 oIaCE NAME EMWa GgWWS00n C06. LL ADORMS 4=300t WIuld oed Wairawils. L USGS FACILITY Sjvc tjMOMr Powio Simia LOCATION 4450 .Ih Gwamn Ch~ PoAW I l i J nII .....I ma I I ......... I I! Im I ...7. .. I I PEmn-I-;uovq -WRI.MP~ffOtf P0O IYEAR IMONMIN DAY _j IYEAR FM-OMNI DAY F- FINAl STOWAT (10ý OMIE4 STONWAlUR... NO DICamam mm Il I I 0 1 0 1 I 0 I 1 I TO:I I I o 1019 13101= = = l I l l NATIONA POLLUTANT ODSCARGE ELMNATION SYSTEM (POES)M u mOM I REORT w MM PTE*f NAWDOFE N"h Evioln wmralon Cm, U.AMMIS6 4300 WhiOi Rload Wafmwifs. L. 6665 PFSJY Byron M*aclho Powso Sefon LWCATON 4460 NoM Germa Chrhfe Wpman L 61010._ _I 3.. ...I -- I I 0010 I 7700 .I I WENrr -UMM I--M MOoffOFG o, I lYEA MONTHI DAY- Y-A I m l,, DAY Fom1 I I 0I 0 I I 0 I 1 IT I I 0 I 0 1 0 I I 0 I VAon F -FWAL COONGSYS oWOWDOWN EiFFRMU1W*** NO UISMNAnl l .....EWANDELAI1ON OF MITVIOA1ION(FRisreas. 1- 1mhs he..)Pw~pWWMXWWn4C. OsnwtmfinM kAIOISh l pra cumfdalammmfaaa.piIdsd onf $WFIahse PERM*TTEE NAEA~DDRE NAME Exn Gondsmon Oo.. LLW ADOAEU 4WO ~ PAWd Wawmww, LOOMI FACWUY BY=c Nudge PrW SWiw UXA'TON 44MOM Nwm m..-. h PoAW ftn^L 01010 NATIONAL POLLUTANT OSCHARGE ELMINATION SYSTEM (NPOES)McS wloomm Meun VrM I m m IDAY_ I Y I MOH I DAY fom: I 0 I I 1 0 1 0 1 0 0 3 10 STWMWATUR RUNOF BME OVEPLOW ST@WATER**NO DomCARG Mj Lasw OUPW k*ASUFN3dNr L"m WMFU AWASLWd3diNr (28)UMPPULE (28)WEAKWAMEW Uaw (28)umm WAVW (20)MEASUF13MW LOW or wo owe I -Ift-NATMO POLLUANT OISCHARGE EL.MNATION SYSTBJ (NPDES)-IToRr G REORT (D-I)PEMITTENMADA NIAM Fus Osasida011n 00.1 LWC ADRS 4~M fM Road Wwvsewb. a 40"5 L00113 wEA NUBE I Oow DICAG NAMa 3T0WMAT MUM00 DAM OVWPLOW 1 STOAMA FACILITY "3a Ihadea Pamm Shilan LWCATN 4460 NOM GeuW Chu~ fed Pumm Domi L. 61010 MONTOR PERIO: YEAR IOT WMYIna YEAR IMONH I DA I 1l0 0 9 0ol Ta I oI 1 10 10 1 1 3 10 I* O & 10 H9ARE a] ........ lLuWW I .-----~- I I E ulew(03)MOWD I -I I -I -I I I IM I I I I I I I I I I I I.I I I I !I I I I I I I I I I I I I ovewoII dIme Ia ommmoddmeboftampmpusdw ufmy 3"or WI u I h"of" fte iW sm" Immott* p sumud*~movhrwiog"as lmwawlls.~uu~~ mmminI~~~ge~'IfMW%fm a~b W~n Sid ~uiai~a~u. aeu. lam SNAIUOF P104CUI meatMm 1 -owsiftorSh~in. bvkgftfwod tEXECUTIVE OFFICER OR Sal II I bI k- I *111M UHOIEDG ATTACHMENT TO COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT For Exelon Byron Station Permit [L0048313 September 2010 BLOWDOWN TEMPERATURE MONITORING: Date Calculated Maximum Allowable Blowdown Temp. (Degrees F)Maximum Actual Blowdown Temp.(Degrees F)09/04/10 09/11/10 09/18/10 09/25/10 120 120 120 120 87.2 86.4 87.0 80.7 Note: Station procedures derive the Calculated Maximum Allowable Blowdown Temperature based on existing Rock River temperature and a calculated maximum river temperature increase. When the arithmetic sum of these values exceeds 120 degrees Fahrenheit, the Calculated Maximum AUowable Temperature limit defaults to 120 degrees Fahrenheit HYDRAZINE MONITORING: There were no steam generator chemical cleaning solutions (or associated rinses)containing hydrazine discharged to the Cooling System Blowdown during the month of September 2010.TOTAL QUANTITY DISCHARGED: N/A TOTAL DURATION OF DISCHARGE: N/A k:bytchndoandtcakyDMRond acWIRj~ScptiO ATTACHMENT TO COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT (Page 2)For Exelon Byron Station Permit L.0048313 September 2010 COMMENTS: 1. The weekly halogen concentration curves and daily halogen dosing time reports are attached.2. Bromine was not used this month.3. There was no discharge of steam generator chemical cleaning wastewater containing hydrazine in this month.4. Flow existed through this outfall 29 of 30 days.k:byrtchbyndb~cilb\ModdyMR~ataiOI\SqpttO EXELON BYRON STATION Permit IL0048313 WEEKLY HALOGEN DOSING INFORMATIONDosine Time Date T M (Minutes) in01 U-I U-2 -U-2 09/01/10 38 40 09/08/10 45 40 09/02/10 40 40 09/09/10 40 40 09/03/10 38 39 09/10/10 43 44 09/04/10 37 40 09/11/10 40 40 09/05/10 40 40 09/12/10 40 40 09/06/10 40 40 09/07/10 40 40 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 09/07/10 Time: 11:00 Analyzed by: J.w.Reviewed by: D.M.Unit: 2 Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L. All values less than this limit are reported for information only.E 1.42.142.14 0 25 50 75 100 125 Minutes 150 b -EXELON0 BYRON STATION Permit IL0048313 WEEKLY HALOGEN DOSING INFORMATION (Minutes)U-1~09/13/10 30 30 09/14/10 30 30 09/15/10 31 30 09/16/10 30 31 09/17/10 38 40 09/18/10 30 30 09/19/10 30 30 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 09/13/10 Time: 11:57 Analyzed by: T. M.Reviewed by: D. M.Unit: I Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L. All values less than this limit are reported for infrnnation only.I.11 I ri~ _ __ _ _--I- ____ _ __ _I i- *-~- -~ --- -.-. -I _ _ __ ___-~-r-,--- -~- __--I I I.1 I a ff I -I P71 I I I m 0 25 50 75 Minutes 100 125 150 EXELON BYRON STATION Permit 1lI048313 WEEKLY HALOGEN DOSING INFORMATION (Minutes)L U-09/20/10 34 33 09/21/10 32 32 09/22/10 35 32 09/23/10 34 35 09/24/10 32 32 09/25/10 32 33 09/26/10 35 35 HALOGEN DOSING CURVE Concentration of total residual chlorineihalogen vs. minutes of chlorination period.Date: 09/20/10 Time: 12:58 Analyzed by: J.W.Reviewed by: D. M.Unit: 2 Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L. All values less than this limit are reported for information only.0.50 0.48 0.46 0.44 0.42 0.40 0.38 0.36 0.34 0.32 0.30 0.28 0.28 0.24 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00_ -[1{~I- ~ If ~. ~ ~TF~I~__ __ ~ ilK 1:.1 {-. H I. :ztz:_ -- 2. 1:1:::~: ~+/-f~+/-: I::i:lz -hA~ ZZzti7tl ____~ Z~l~Z~il _ _ _ _ ~1~{~I~Iiii4I _ r 1 1~...r..;E ~_____ _-r I -~ _______0 25 50 75 Minutes 100 125 150 EXELON BYRON STATION Permit [L0048313 WEEKLY HALOGEN DOSING INFORMATION (Minutes)-I U.2 09/27/10 33 34 09/28/10 35 32 09/29/10 30 30 09/30/10 32 33 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 09/28/10 Time: 11:57 Analyzed by: S.S.C.Reviewed by: D. M.Unit: I Note: The limit of detection for the instrument as tested in dhe Station Laboratory is 0.02 mg/L All values less than this limit are reported for infbmation only.2 1 1 LfJL 7 -._H: -] i I 1 ! !! I 0 25 50 75 100 125 Minutes 150 ExeIo n.Egelon GeDnraton Company, LIC www.Exeloncorp.com Nuclear Byron Station 4450 North German Church Road Byron. IL 61010-9794 November 15, 2010 LTR: BYRON 2010-0133 File: 2.09.0411 1.10.0101 Illinois Environmental Protection Agency Water Pollution Control Compliance Assurance Section #19 1021 North Grand Avenue East P.O. Box 19276 Springfield, IL 62794-9276 Subject Byron Station Monthly Discharge Monitoring Report In accordance with Natiorna Pollutant Discharge Elimination System (NPDES) Permit Number 1L0048313, issued September 8, 2000, we are submitting the Discharge Monitoring Report for Byron Station, Units I and 2. This report covers the period of October 1, 2010 through October 31,2010.If there are any questions regarding this report, please contact Mr. Stanley Kerr, Chemistry Manager, at (815) 406-3200.Respectfully, Bradley J. Adams Plant Manager Byron Nuclear Generating Station BJA/ZC/sdk Attachments -EM1 I AE UDIS NAM am" sAuida C06. U.C ADDRES 4M WhA Road WonugWOKLOWl FAOMJ1 b'Of Wji PO 6SOM UXATION 4460N.IO mW ChW~hRoa OPro L 61400 MLATIKt&A POLLUTANT =ICHARGE BJIINATION SYSTEM (WOES)LOOMIS IIm 0 mm 1 01110 1 0@111 Toc 11011013 11 F. USM.M MAJORAT 0IA-MEWRI-lmc&u"ý Cc= a= om OUANMORLOADINQ CAJANM OR OONCENTRATION NO. FREOUENCY SAMPLE PARAMETER AVOME MAMMUM la MNMUM AV ERAGE MONUM UNITS EX OF TYPE ANALYSIS SOLIDS. TOTAL SIAMPUE 5.1 19) 0 m so SUSPENDED MEASUREMENT as= 1 a 0 EFFUMMOROSOVALUE Loam MQ& M CHROk" MEA"s, (in SOO ("c") Ulv3mw 01032 1 0 Laaw EFRAXWT VAIAXE E CHFOMU04 TOFAL (ABC%LOOM MOL.EFFLUENT 3- VALUE TOYAL SAMPLE (AS CU) MlASUlWmW (go Soo 4"Ou 1 0 0 ummy MKK EFFLUIENT V*AA VW SAMIW (20 19) so (ASFV) I wmwnmm ("Of 1 0 0 Lnew Mm EFFLUENT OFIOSS VA LW : *,- !, I I" LEAD.VOITAL (20 (AS PS) LWASLW43WU 010" 1 09 LubWWWY EFFLUENT OWN IM Mae.=& (29) 18) sw (ASNQ I ME.#"AU PAZ a a I I 01067 1 0 0 McklL.EFFLUWt GROSS VALUE-"Awafn= TREPHONE IDATE PfAMCPALOGWO410FROER ftwonowft"dow wpm".I J. 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  • i fim .-~ma blh.m PARAMETER OLIAMMORLOADING awwmyom ----TRAWN m FFWOUENCY SAMPLE MAjoham uNFm AVERAGE UNITs EX OF TYPE ANALVSIS PH SAMPLE 00400 1 0 0 MEABUAIMMW (121-EFFLUENT El N VALUE SOLIDS. TOTAL 8AMPLE (96) Sao SUSPENDED MEASUFAMW SONS 1 0 CHR[NAW -- -SAMPLE (AS CFO M...." 19) sw olon 1 0 0 ust EFRARNT GROSS VALUE CHROWINAKYWAL, SAMPLE (28) Is) sw (ABOR MEAsURlLwfF Ali-010" 1 a 0 me&f4- m NO VALUE TOTAL no 042 1 0 a UISCY GROMW (ASFE) MEA§LVNNW 19)IN*" 1 0 0 I IK 'IVALUE FLINY.19m kASP% I MEASURIMW low 1 0 0 GROSS VALUE WANWOM TELEPHONE DATE PROIwftv4mxnm Sm"Is 4004=J. Adg' Is riot EXECUTIVE OR ýAl I w a omýý AUTHORIZIDAGENT mummm VEAR MONTH DAY MWMPLMATMOFMYVMAUMPdWý0940mbýfthWO
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LOO ____________________ oouosm svsm ~NLOWmO FACILITY Spia Numw 6om 0-YA MONTH DAY vUM MOT ýmDY LOCATION 44I0bhWNl* OWWtkvhR0d F=mm 1 0 1 1 0 01 1 Ta 1 01 1 0 3 1 'NO DImsCHf0E BYM% L 61010 NMIL 100k donftANh.OtAMVOD UNIYRC1CIRTO O fXANY SML PAAEERE O V TMTM4PLI AVRG 2143 333 o (0 UM -VRG -AM -~ 0 13 ON PHSA00 40 a~a a"II 0 tAONALM POU.WFANT DISCHARGE EIMNHATMO SYSTEM "NPDES)mW" mU~OffMO wAOR (W-EOAM NAEA.FE MAMI Ellmmuo s gegw I. LLC-DIIEI 4300 W~dW PoAN WWwftiwS L SOS I m3 I I ..... -._ ,, l I= Is I rfiffnlmiiim I I TOVOAI1 miNoW @MI OV.OWL***NO UOAR EIJA.FACITY *Mw ftchmfwW SrWAM WOGAfON 4450 NOM G0Mm Cha PoAN OpwunL W1010 I I MONM MYI :f UMONI DAY r-m l I I 1 0 1 1 1I 0 1 1 1 TO: I I 1 0 1 I 1 I 1 3 1 I 1...." li WWr' --ir 2110 IlT- a Hu Mre s ()Him ;:;Lg NATKOMA POLUTANrT DISOWARE EIUNATION SYSTEM "4ME)mcNXm NO n mor 0 C POR (mm NAME Ex" n ImrdN C10 UL Waem"wf. I some FACUf1Y plgn MAIM PIW6 IN=LOCATOU 4460 Nm ~m Chw&PArd DYMN~ 61010 MOhm UHSIS me OCUP F-U 1 iu c. .inmp.iIuM MW &IM l P00 I IEAR MOM I DAY rn tI 10 1 10 0 1 1 ITo:l I 0 11 0 1 l 5 1 ... N orow I , ATTACHMENT TO COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT For Exelon Byron Station Permit UL0048313 October 2010 BLOWDOWN TEMPERATURE MONITORING: Date Calculated Maximum Allowable Blowdown Temp. (Degrees F)Maximum Actual Blowdown Temp.(Degrees F)10/02110 10/09/10 10/16/10 10/23/10 10/30/10 120 120 120 120 120 79.0 90.8 81.3 81.0 77.0 Note: Station prcedures derive the Cakcukd Maximum AMowable Blowdown Tewrature based on existing Rock River temperature and a calculated maximum river temperture increase. When the arithmetic sum of these values exceeds 120 degrees Fahrenheit, the Caculated Maximum Aowab Temperature limit defaults to 120 degrees Fahrenheit. HYDRAZINE MONITORING: There were no steam generator chemical cleaning solutions (or associated rinses)containing hydrazine discharged to the Cooling System Blowdown during the month of October 2010.TOTAL QUANTITY DISCHARGED: N/A TOTAL DURATION OF DISCHARGE: N/A k~byrch~ndcWkombiyDMR~asbdzIVOcIO ATACHMENT TOW COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT (Page 2)For Exelon Byron Station Permit [[0048313 October 2010 COMMENTS: 1. The weekly halogen concentration curves and daily halogen dosing time reports are attached.2. Bromine was not used this month.3. There was no discharge of steam generator chemical cleaning wastewater containing hydrazine in this month.4. Flow existed through this outfall 31 of 31 days.0A k:byrtc~badrofbckkMamidaDR~mnaIXI~tO EXELON BYRON STATION Pemit 1L0048313 WEEKLY HALOGEN DOSING INFORMATION (mintes U-1I U-2 lO/Ol/O 33 32 10/02/10 33 32 10=1i10 35 33 l0A)311O 35 33 104/10 30 30 10105/10 30 30 10A06110 30 30 10/07/10 30 30 lO/0U/lO 33 31 10/09/10 30 30 10/I0/10 30 30 HALOGEN DOSING CURVE Concentration of total residual chiorineihalogen vs. minutes of chlorination period.Date: 10/04/10 Time: 12:12 Analyzed by: J. D.Reviewed by: D. M.Unit 2 Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L All values less than this limit are reported for information only.A-. -I 0 25 50 75 100 125 150 Miufte EXELON BYRON STATION Permit IL0048313 WEEKLY HALOGEN DOSING INIORMATION (Minutes)U-1I U-2 10/I 1/10 30 30 10/12/10 30 30 10/13/10 30 30 10/14/10 30 30 10/15/10 29 27 10/16/10 30 29 10/17/10 30 30 HALOGEN DOSING CURVE Concentration of total residual chlorine.halogen vs. minutes of chlorination period.Date: 10/1 1/10 Time: 12.08 Analyzed by: J.W.Reviewed by: D. M.Unit: I Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L All values less than this limit are reported for information only.-H'4 _-sj :i : : .....- --------- -- H ---- -- ----0 25 50 75 100 125 Mlnutw 150 EXELON BYRON STATION Permit 1L0048313 WEEKLY HALOGEN DOSING INFORMATION ~IL L IT-?10/18/10 30 30 10/19/10 30 30 1I120/IO 30 30 10/21/10 34 30 10/22J10 30 30 10r23/10 30 30 IWF24/10 30 30=z HALOGEN DOSING CURVE Concentration of total residual chlorineihalogen vs. minutes of chlorination period.Date: 10/18/10 Time: 13:51 Analyzed by: G. S.Reviewed by: D. M.Unit 2 Note: The limit of detection for the instrumet as tested in the Station Labortory is 0.02 mg/L All values less than this limit are repoted for information only.,44-: 0 25 50 75 Miufts 100 125 150 EXELON BYRON STATION Permit ."0048313 WEEKLY HALOGEN DOSING INIORMATION U-I 1a-2 10/25/10 25 25 10126/10 25 25 10/27/10 25 25 10/28/10 25 25 10/29/10 25 25 10/30/10 25 25 10/31/10 25 25 HALOGEN DOSING CURVE Concentration of total residual chlornnelb n vs. minutes of chlorination period.Date: 10M25/10 Time: 12.05 Analyzed by: T. M.Reviewed by: D. M.Unit: I Note: The limit of detection for the instrumnt as tested in the Station Laboratory is 0.02 mg/L All values less than this limit are reported for infommation only.I 81 g 0 25 50 75 100 125 Minute _& Exelein Exelan Generation Company LLc Nuc]eat Byron Station 44S0 North German Church Road Byron. IL 61010-9794 December 13, 2010 LTR: BYRON 2010-0150 File: 2.09.0411 1.10.0101 Illinois Environmental Protection Agency Water Pollution Control Compliance Assurance Section #19 1021 North Grand Avenue East P.O. Box 19276 Springfield, IL 62794-9276 Subject Byron Station Monthly Discharge Monitoring Report In accordance with National Pollutant Discharge Elimination System (NPDES) Permit Number IL0048313, issued September 8, 2000, we are submitting the Discharge Monitoring Report for Byron Station, Units 1 and 2. This report covers the period of November 1, 2010 through November 30, 2010.On 117/10 the Unit 1 Natural Draft Cooling Tower (INDC71 debris fence became blocked which caused a small overflow of cooling tower blowdown water to exit the NDCT basin and flow Into the storm water ditch located on the east side of German Church Road. The water flowed North in the storm water ditch and entered Woodland Creek via stormwater Outfall 003, East Station Area Runoff. The estimated amount of cooling tower blowdown water that flowed through Outfall 003 was determined to be approximately 375 gallons. Analysis results of the overflow samples are summarized as follows: pH Copper (mgIL) Zinc (,W.L)8.82 0.010 0.039 December 13,2010 Illinois Environmental Protection Agency Page 2 Byron Station Operators took immediate measures to lower the cooling tower blowdown water level in the basin of the NDCT to stop the overflow condition and additional actions were taken to remove the cause of the debris fence blockage.If there are any questions regarding this report, please contact Mr. Stanley Kerr, Chemistry Manager, at (815) 406-3200.Respectfully, Bradley J. Adams Plant Manager Byron Nuclear Generating Station BJA/ZC/sdk Attachments 0 NATIONA POLUTM4AT DISHARGE SAJMItI1ON SYSTBSI (NPOES)-NXA NoWuRM wIM ow ocnm~o PEF*ruEE rnMMAOF NAME UJOW assr~all CIaL LWC ADFW0 430 WIOM OMPd Waunw.f LOON I ~ vl -a -l m Ii I r, i I I I P. NIMAL M OMMMD m inasoom~i M si FAClUTY Dyw ucia F~dPO"urSU~w LOCATION 4460 NOM OUM~ Churc PoAW SpiiniL 61010 I VAR I M IDYj TO I AM I O II OAY FrmII1 0 1 111 1l 0 1 1 1 10 11 11 1 310 1= " = l ................

  • I NATIONAL POLUTAfrT DOGCHAABE SJMNATION SYSTB4 (NPVE)DISHA m wpRORVI DI-E~f HAMFJD NAME- Ex" Osmalon Co. LLC-DM 4= WiW" PoAW Waffwwlb.

LingOM L00oMi I A- ° 0 1 I MoNffoFmw I NAMm0 SNO DmSOHApmm .FACILITY By= NUCIw Pow WaN Al 11A -MOMI I OAY I YEARIM NT mm DAY LOCATION 4uwao.50um~ MOMn LWd iowo PAW

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LLC ADOAMS 430Vt~ Rw Wanrws. Ltll FAOIUTY ftmmo FcWM PawSNOW WOCAflON 4480 NMO GwmCwhP~I Lmml I NEOWMW I m 0 I mOCHARGENUM I YEAR I MONHMI DAY I I VEAR I MOMTI DAY I OCAMm NAAR)11IL~aeaNO DS3OKAR0E n i *ii PuntI 1 01 1 1 1 1 1 Fl To~l 1 0 1 l1131 a0-1 4 NATIOAL. POLLUTANT DSSCIIARE EBJMITION SYSTEM (NPDEB)-umm monm awr (own a PER~rVEE HAODJORCES NAME 9 ',io Gsnuran CoL LLC ADES4300 Wkd PoAW Wanwwfst L 8060 LOOMS I C1o 0 NA-pmiel)P -fa WWIPPGa usc)-wAM... NO 0100ANR kiONffCfWiG PEFUM FACILITY jwun tNXa Powu ftlon YEAR MO=::MI DAY I I YEAR1 MOMfl DAY1 LOCATION 445 OM OwUQmim Chumhoa PAWu=L 1 0 11 1 1 011 1 To:II 1 0 1 1 1 31 0 Byon.L 61010 IAEAgSiUNT R- 5)ML 19) 500 PaLy A)AILY No Mft Do" 0 NAT1ONM POLUTA/rT DISCHARGE BJMINATION SYSTEM (NPDE)PEWITTE NAMWA0OFAW NUNE Emin Gm.Uan Oa, LLW-DIE -=VnM Rd Wafewwft L ON I 00813 I 1 0HAI NIA NMUO EU- @1)P. N.on WWNINTO osc MOW01111ING PEFVW FACJITY pran Mm*W Pam fSw 6vw IANmm M INTH -ý I~ WARI MONTHN DA LOCATION 4450NMM uisn~m Chui~i od Fmm:llo 110 1 101 1 Tal 1 01 1 1 13101 Wpmun L 61010*-*NO 011CNANGEM NATINXL POLLLMAN4T DISCHARGE EUMINATION SYBTMd (NPOES)DONMa NMAM w pRTDW ocm0 PEIOTTE -AEADM NAME Einbn n mr Co. LLC~AoDRE 4300 bi.M PAW Wbrmvmws L SON I USESI3 I I OrnlO I P, -F I I -MONffOFM PEFOOD I F- AL PADWAMM1IMAW(FO001) SNO GNmam FAMMU " M iaNwPow~hw ft VIM I mMONTH DAY I I VIM I MOT I OAY LOCATIO 44G0NmOsuQW '1ChwURsAi Ro-I I 1 0 1 1 0 1 TacI 1 0 11 1 1 31 0 Syran. L 61010 NATIOM& POLUNTANT DISCHARGE SJMIATION SYSTM NPOES)D103A IMON R IMOR (Ol PERMITTEE NAME/ADDRESS NAME Omralm 0ww ~ CoUL ADDRESS 4=0 Wk"~ Paul Warotrswb LION6M FACILTY tmn MhclarPow 8tomn LOCATION 4450 NooG 0m-Cw h Road uyeoei IL 01010 I L s4I3 I! ..-..m...m I I 1010 I JII DN*# NUMBE I I 1- -I L m tt .. ... lM~R~ m)F-FIqNA STOGENWATIG 4f0 M 10*N A-AIU**0sNO D1ISCHARG I YoMOEAR MG 'w I 1 0I O NTH I I011 IT.] YEAR MONTH ! I DAY I FIMI 1101111101 1 10 1 113 101.....i JI-- lam- two irmirupowns jw" 11mv-11" mb lam PARAMETER I< AEIG!PH ..AIAims L*HIM1YOA LWS I* mr QUNIT RCONCENTRATION INC.o f: AVRG I -M I WerS I EX AAY1--I I-um UIT war I rn-I I 4 -I 4-4-I I-I 00ow 1 0 0 EFFLUENT DOSS VALU1E OLIW TOTAL 0o0 1 0 0 EFFLUENT GROSS VALUE CHROMILR HEYAVALENT l"032 1 0 0 EFFLUENT GROSS VALUE LClROhWAM TOTAL (ASCFO](12)L (S)I No0 I I I I I s- I I--(26)Leav (28)-I I (19)J~L (19)I 5w I I LWnAW8U=M~dN I-I I I smI I"on I a 0 Leavy Me&& bA~yJE GOW VALEms.,m qun ~e C0UPER.TOAND WPAAO PAIY VI lH Ra ~me am)EPa FE)m LAEAS(Roy 3095 S NATKONA POLWITANT 060C4ARGE EIJMINTION SYSTEM (NPES)Dawmm -wO -OTO I -s 6 NAME ENW -ao Fmsa 0oý LWC ADRE 4300WbiSW Road Waaunwao. L UM6 FACILITY ft un Iicw Pome "In LOCATION 4460 Noil Gaon- Chum Road SO'n IL 61010 I WM3 r -o -- 0 VONRI MONPh I DAY I WA MVONM h DAY STOUWATIR (FOME OM0)I ORMWATIE". " noma~Ffaft II 1 0Vf 11 11 0V 1 Toc F I I 1 0 1 1 1 I 0 1...... I.....l l-M~ NATONK L POWJ.rANT DISCARGE BAUNATIO SYSTEM (OE)unoWoRnmwom" (1Iu )0 mY-PERIATEE FWNAMEADRESS NAME Evmia Owmadon COL LL ADRS 430OWM~WW oAW WanmwUs. U.656 FACIUTY Oym tonIaels Powar ftion LOCATION 460 Norl G..-. Chu RoAW OP L. 61010 I LUiMU 3 I I m001-...I I ....I POWNMBI I] I ONXcHARGE NMBERt IY MOR4 PER IO I I ER I l MORI I DA .VA I M MI DAY I MKOn (043084)F- RoIL 9YM LMOY&#NO DSMIARGE riwti I I 0 I 1 I 1 1 0 1 IT.I I 1 0 I 11 31 ol01 I I I I.....I I PLATKONM POLLUTANfT 0i0cHARGE S~tAW11QN SYSTEM ")PDES)DCA~ME -C 1 WN A PMT ~k r--.m7-EOTE KAW -DR NAME Ejvan Gwmnalln Co.. LLW-WIE 4M0 WffM lo Waffows. IL am ILSu4uaa 0020 WrOýAli RUNOFF SM~ OV011FOW$s0011AIM FACLITY tMn Nusw Pamt 81dM LOCATION 4450 NO GOum Churh Fload WIsI.UL 61010 YEMRMII DAY I I ARj *MOT DAY FmmtII 110 11 11 0101 1 ITe I110 1 11113 1 0&00NO 91NAIMa].-___j NATIKtLA P0LLUTANT DU8CHARGE GAMATON SYSTEM PNPVE)DUMAROm wNO~rn pOW PEVAM NhW DDES pA Em" aGsnmilon Co. LWC ADORES 430OWm Ma awormwlbI 56 FAOUIY Dymn lHid.. PwmS LOCATION 440 Homl Ow.. im Rk a f SvMN. L 61010 USUS13t.ONOa (a 0IS1)MSTW WAI Nff BAMS OVUSRFO 8101MAlM..NO DISC ý A XN..Fital I.I 10-offF-OFN mm I DA I y I HMI DY ATTACHMENT TO COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT For Exelon Byron Station Permit .01048313 November 2010 BLOWDOWN TEMPERATURE MONrrORING: Date Calculated Maximum Allowable Blowdown Temp. (Degrees F)Maximum Actual Blowdown Temp.(Degrees F)1I/06/10 11/13/10 11/20/10 11/27/10 120 120 120 120 66.3 75.9 68.7 64.4 Note: Station pmcedures derive the Calculated Maxiuam Alowable Blowdown Temperature based on exisftig Rock River and a calculated maximum river temperatue increase. When the arithmetic sum of these values exceeds 120 degees Fahrenheit, the Calcuated Maximum A/owabk Temperaure limit defaults to 120 degrees Fahrenheit HYDRAZINE MONITORING: There were no steam generator chemical cleaning solutions (or associated rinses)containing hydrazine discharged to the Cooling System Blowdown during the month of November 2010.TOTAL QUANTITY DISCHARGED: N/A TOTAL DURATION OF DISCHARGE-N/A Lbr-chbyron&ch"onddyMRNbchOIV*wlO ATfACHMENT TO COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT (Page 2)For Exelon Byron Station Permit IL0048313 November 2010 COMMENTS: 1. The weekly halogen concentration curves and daily halogen dosing time reports are attached.2. Bromine was not used this month.3. There was no discharge of steam generator chemical cleaning wastewater containing hydrazine in this month.4. Flow existed through this outfall 29 of 30 days.k:byrsabyramdb~cukrMmonfl DMR~fltad M~ov 10 EXELON BYRON STATION Permit ILD048313 WEEKLY HALOGEN DOSING INIFORMATION Do gTm (Minutes)_1 -2 11/01/10 25 25 i1/03/10 25 25 I t/03to 25 25 11/05/10 25 25 11/06/10 25 25 11/07/10 0 0 HALOGEN DOSING CURVE Concentration of total residual chlorineihalogen vs. minutes of chlorination period.Date: 11/02/10 Time: 12:27 Analyzed by: T. M.Reviewed by: D. M.Unit: 2 Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L All values less than this limit are reported for information only.I ---F-- I I I I T 119 I-I i 1 I1 ff I 1 1 1 0 25 50 75 Minutm 100 125 150 .4 EXELON BYRON STATION Permit 1L0048313 WEEKLY HALOGEN DOSING INFORMATION (Minutes)11/08/10 25 25 11/09/10 25 25 1110/10/! 25 25 II/11/10 25 25 11/12110 26 26 1!1/13/10 25 25 11/14/10 25 25 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: I I/810 Time: 11:14 Analyzed by: G.S.Reviewed by: D. M.Unit I Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L All values less than this limit are reported for information only.o.50 0.48 0.46 0.44 0.42 0.40 0.38 0.36 0.34 0.32 0.30 028 0.26 0.24 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02-0.00:1Iii--' -. _ _! 1* JI'Ii t--[ ... J -K l-... -.,.J..L I ----i ...I 0 25 50 75 Minutm 100 125 150 EXELON BYRON STATION Permit IL0048313 WEEKLY HALOGEN DOSING INFORMATION Minutes)U-I U-2.11115110 19 23 I1/16/l0 19 19 l1/17/lO 21 22 i1/18/10 20 20 I1/19/lO 22 19 i1/21/10 20 27 I 1/21110 19 20 HALOGEN DOSING CURVE Concentration of total residual chlorineihalogen vs. minutes of chlorination period.Date: 11117/10 Time: 12:17 Analyzed by: M. H.Reviewed by: D. M.Unit 2 Note: The limit of detection for the instrwment as tested in the Station Laboratory is 0.02 mg/L All values less than this limit are reported for information only.I 0 25 50 75 100 125 Minutes 150 EXELON BYRON STATION Permit IL0048313 WEEKLY HALOGEN DOSING INFORMATION (Minutes)S1t22/10 20 20 11/23/10 20 21 11/24/10 21 20 11-25110 21 20 11/26/10 21 20 11/27110 20 20 i1/28/10 20 19 HALOGEN DOSING CURVE Concentration of total residual chlorinedalogen vs. minutes of chlorination period.Date: 11/22/10 Time: 11:34 Analyzed by: D. B.Reviewed by: D. M.Unit: I Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L All values less than this limit are reported for information only.7 .~ ~ --Y- , --.--' -r I I _.1-4 I T II 140 _ _ z m::-0.t 0 25 50 75 100 125 Minutu 150 BYRON STATION Permit RDL)48313 WEEKLY HALOGEN DOSING INFORMATION (Minutes)U-1 U-2 11/29/10 19 19!11/30/10 18 1 18 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 11t29/I0 Time: 11:12 Analyzed by: J. W.Reviewed by: D. M.Unit 2 Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L. All values less than this limit are reported for information only.I I i I I I I I I I I I I T I I F F ~I f- I I IlI I I I I I i a zz l T T ' E -I I I Ic 0 25 so 75 Minute 100 125 150 ~Exelon.Eelon Generation Company. LLC ww.exeloncorp .corn Nuclear Byron Station 4450 North German Church Road Byron, IL 61010-9794 January 14,2011 LTR: BYRON 2011-0009 File: 2.09.0411 1.10.0101 Illinois Environmweal Protection Agency Water Pollution Control Compliance Assurance Section #19 1021 North Grand Avenue East P.O. Box 19276 Springfield, IL 62794-9276

Subject:

Byron Station Monthly Discharge Monitoring Report S In accordance with National Pollutant Discharge Elimination System (NPDES) Permit Number IL0048313, Issued September 8, 2000, we are submitting the Discharge Monitoring Report for Byron Station, Units 1 and 2. This report covers the period of December 1. 2010 through December 31, 2010.Special Coniltion 5 of the NPDES permit requires the station to weigh the copper anodes at the end of the zebra mussel control season and to Indude the total mass of copper used In the discharge monitodng repor. The zebra mussel copper ion skidd were shutdown on December 1, 2010. The anodes of the OA copper ion sidd were removed and weighed on December 27, 2010. The anodes of the 08 copper Ion sidd were removed and weighed on December 27, 2010. The total mass of copper used for zebra mussel control was 221 pounds.On December 1, 2010 the Unit 1 Natural Draft Cooling Tower (NOCT) debris fence became blociced which caused an overflow of cooling tower blowdown water to exit the NDCT basin and flow Into the storm water ditch located on the east side of German Church Road. The water flowed North in the storm water ditch and entered Woodland Creek via storm water Outfall 003, East Station Area Runoff. The estimated amount of cooling tower blowdown water that flowed through Oulfall 003 was determined to be approximately 25,000 gallons. January 14,2010 Illinois Environmental Protection Agency Page 2 On December 12, 2010 Unit I NDCT debris fence blockage coupled with high winds blowing from the East caused an overflow of the cooling tower blowdown water following the same flow path to Woodland Creek as described above. The estimated amount of cooling tower blowdown water that flowed through Outfall 003 was determined to be approximately 80,000 gallons.Analysis of the overflow sample determined a zinc 9oncentration of 0.0283 mgA..During both events, Byron Station Operators took immediate measures to lower the cooling tower blowdown water level In the basin of the NDCT to stop the overflow condition and additional actions were taken to remove the cause of the debris fence blockage. To prevent future debris fence blockage Byron Station has a repair plan scheduled for March 2011.If there are any questions regarding this report, please contact Mr. Stanley Kerr, Chemistry Manager, at (815) 406-3200.Respectfully, Plant Manager Byron Nuclear Generating Station BJA/ZC/sdk Attachments NTKNONAL PQWAITANr DOCHAR8E &UIE"ATIOI SYSTSI (NPOES OIBNAmm 110 in R 0 10FIM-EIIMMFDF NAME EAW Gms.Mon 00 LLW ADOAEUS 4300 VAMW Road Waninwls L 006" FACILITY Oyma Hadw Powe 01m LOCAllNM I 440 MO~ Chw~ Andi DpIML 61010 LO 3 Iwmm I in 0 -F-oPum motn I 'EARIMNTHI DAY I I 'EAR I~TI DAY I* w--FmaI 1 11 0 1 1 1 2t 1 0L 17 TO: 1 1 11-1-2-1 3 1 -11 I I NATWOM. PoUwrMr DOMAGEns auwAiiW4 SYSTM (WOIS--w pMAGHM OM-WM MAWASES Emo Im Gawern C0. LLD AMOCS 430M"biAWn Wbugwft LOONS FACILIY BM-111- PlWSWW WrATC 44d~M ~ Gsn Oupc bU Sjvm% L 6101 a Al" 0 I ~ ~ -ofowi~I yIm I mONII oAY I Ivo VI MII DAY I im mmmiýUOsi) PU mmddf bidmmU i i 1 II HIIlll i II i* I I -- I F ,l I 1 0 1 1 1 21011Il TaI flo I 1 3IIIaI111 I PP AMqEIW AIVOMToYVL OR LOADOM i OLWIANMORmNEIVMTUN 4 N .IX "

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--NATKINAL POLLUTANT DISCHARGE EUMINATION SYSTBJ (NPOES)DMOMMnKOMMOwAPOTM" OCM1-E*ffE HA DMS N"A Eubn Gmweaf Cbý LL W0IN 4M0 WOM PoAW Waausrwft LOUSG NAMU Looms 01 (WmRS)ONrMmOinmA orc-mp...Rm"i umM momm1UITP 6S10-orp mwmaUw FACUMM Stun- ftsw PoUmm I noR I MNoH I OAY I I W#AR I MONT I OAY I LOCATIO MW WM rnQ s.M Chwh ad PMM I 1 011 1 21 01 1 To:I 1 011 1 21 3 1 DIM% .L 01010 o~e~goq EJ~ 13...-I- I -i (0 (~ I -I -I f 136 C-I U~ I V.~I-- I_I m mo KNIAm1iO Or N MWATW VmU0I als.umbom wQ 1.Fbw4A~dfemum 3* 5~ 31 dsW*AlUw marl 0 NATiONA POU.UTAtEr DISCHARGE Bi.W4ATIOtd BYSTSJ (nPE)--w puomal"To ME EmMon Owmaw C*, LL ADDOMB MOMi PoAW FACILITY Oym uoa 1~w awm 01un LOCATONM 46 orl Hummo=. Chc Road IMwun L 61010 I L04f3 : I m-I a OMCN 6E I -ono, -StIn 1 1,2 0 I 0 i m l F i t I o l t 1 21o 0 1 T a IT Il 1 i O I1 1 21 l t 1 I K46" 41-u)FP. 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ILO AwMM 410Wki PsAN WSWaewfs LGllSS LOOM3 I o' 0 Iwmmwni"MeRl)Siuinl= UIN0W SAMi 0VOWLO...slommommw ...Mo~forwin Ia FACUFTY @PMa ftfiadmer &A 6MmI M I MOMT I DAV :1 1 UOCATION 4M50NOM 09mi'Cwch Usd Punt I1 1 0 1 1 0 1 TO: pun. L 61010.WA I MOW l I aY I1 10 1 1 1 2 1 a I " I m m E I -I I (26)uww (26)(24 LOWY umm I (I o I I i V~~~IE I_9 r1 AOL (14 MG&(11)-I I I I I I I I-I I I ---I 'I I I I DATE 1. UsTin*~ W~wUsr~siumd~6m 6Wm Puwi ~b*~ Urn mmii.2. 1ib~uspsh~ngus.ig~ mm~0 NATIO4L. POLLUTANT DICHARGE UNMATION SYSTEM (WOES)0-EM" NAWA .R MW EX" OWWWM Coý LL ADm 4300VUd Rood Wwiwl.,f INNso PIFACK Byram Nxw Pow fton WOCATON 44 No1l Gsnm Ohu RAnd UWran L 61010 Lmm EA I LW ml~fp wIM (Do OCuM OTCHWAXE RWOOW MU OVROW%To: 10 WR ONI DAY Ffomt I 1 0 1 1 1 2 1 a PARAMETER > ,.-ýl allANTTFYORLOACM NCI(EL TOTAL ý.j AVERAW I W=WM I" t4 I MEASUFMADIf"Wr 1 0 0 WMA TOTAL IFFLUWGFAMVALM 0lLAWaREAW 1 0 0ý q= VALUE RJOW.WCONMUOR TIM TRUTUNT PLANT hCANNIMM ow 1 0 0 EFFUMT GACM VALUE I &Am" MEASUNIMW$AIM MEANNUNNT i --ft"am" bwffimrým mnfflw%§ýQUANTMl OR O NCOFfRA T MO EXO L FFm WC Y " ME. I tM~I I AVffAQ I MA)SUM I USI a ~AMACWVM I raw I (" I -I I 1 (10 Lftw MWL 19)uww MWL uww Im MW I I I I I I I I an I I Ili I I I I I I I i I I I I I I rfmat-m lwkwA"im~MOwrDEOFPRIOCK EXEUN an mmmm I CANE Ins154054701 111 01 14-i m Iwm I yamg IIm DAY C uomaq MU UWAISAlIMON AVI0IAIUSSObrmodsub wfhsvm EPA Fon. =04 MRu 340 so PAGE2OFj ATTACHMENT TO COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT For Exelon Byron Station Permit U-0048313 December 2010 BLOWDOWN TEMPERATURE MONITORING: Date 12/04/10 12/11/10 12/18/10 12/25/10 Calculated Maximum Allowable Blowdown Temp. (Degrees F)120 120 120 Maximum Actual Blowdown Temp.(Degrees F)65.9 70.1 70.5 68.3 120 Note: Station procedures derive the Calulated MaiWum Alloabl Blowdown Temperature based on existing Rock River temperaiue and a calculated maximum river temperaure increase. When the arithmet sum of these values exceeds 120 degrees Fahrenheit, the Calculaed Mamum Alowabe Temperature limit defaults to 120 degrees Fahrenheit HYDRAZINE MONITORING: There were no steam generator chemical cleaning solutions (or associated rinses)containing hydrazine discharged to the Cooling System Blowdown during the month of December 2010.TOTAL QUANTITY DISCHARGED: N/A TOTAL DURATION OF DISCHARGE: N/A 0 Ltyr-ch"ma&ckrkWooWyDMRWWWIM)cciO ATTACHMENT TO COOLING SYSTEM BLOWDOWN LINE (Outfall 001)DISCHARGE MONITORING REPORT (Page 2)For Exclon Byron Station Permit IL0048313 December 2010 COMMENTS: 1. The weekly halogen concentration curves and daily halogen dosing time reports are attached.2. Bromine was not used this month.3. There was no discharge of steam generator chemical cleaning wastewater containing hydrazine in this month.4. Flow existed through this outfall 31 of 31 days.k:bvr cb~yumbbw w~~k

  • 11. 'amAIDmc1O EXELON BYRON STATION Permit ML0048313 WEEKLY HALOGEN DOSING INFORMATION D~am Qa ~m.-I U-2U- U2 12101/10 20 20 12108/I0 20 20 12102/I0 22 21 12109/10 20 20 12=03/10 20 20 12/10/10 20 20 12AW4/1O 20 20 12/11/10 20 20 12105/10 20 20 12/12/10 20 20 12106/I0 18 17 12107/10 18 18 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 12A06/10 Time: 13:20 Analyzed by: M.D.Reviewed by: D. K.Unit: I Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/L All values less than this limit a reported for information only.0 25 50 75 Mlnufte 100 12S 150 EXELON BYRON STATION Permit UM0048313 WEEKLY HALOGEN DOSING INRJRMATION U-I I IU-2 12/13/10 20 20 12114/10 20 20 12/15/10 20 20 12/16110 20 20 12117/10 19 19 12118110 19 20 12o19/10 20 20 HALOGEN DOSING CURVE Concenrution of total residual chlorinedalogen vs. minutes of chlorination period.Date: 12/13/10 Time: 10.55 Analyzed by: D. C. A.Reviewed by: D. XE Unit I Note: The limit of deeto for the instrument as tested in the Station Laoam is 0.02 ms/L All values less than this limit we reported for information only.1 0'.0 25 50 75 100 125 Mnufte 150 EXELON BYRON STATION Permit IL0048313 WEEKLY HALOGEN DOSING INFORMATION U-1 I U-2 12/2W10 18 19 12121/10 Is 18 12=22/10 20 20 12/23/10 20 20 12"24W10 20 18 12925I10 19 18 12fl6/10 19 19 HALOGEN DOSING CURVE Concentration of total residual chlorine/dulogen vs. minutes of chlorination period.Date: 12/21/10 Time: 10:18 Analyzed by: A.W.Reviewed by: M. H.Unit: I Note: The limit of detection for the instrument as tested in the Station Laboratory is 0.02 mg/ All values less than this limit are reported for information only.I 0 25 50 75 100 125 Mlnuto 150 EXELON BYRON STATION Permit EL0048313 WEEKLY HALOGEN DOSING INF)RMATION U-I o 12/27/10 20 21 12128/10 19 Is 12129110 20 20 12/30r10 20 18 12/31o10 17 18 HALOGEN DOSING CURVE Concentration of total residual chlorine/halogen vs. minutes of chlorination period.Date: 12127110 Time: 11:23 Analyzed by: J. D.Reviewed by: D. M.Unit: I Note: Mme linfit of detection for the instrument as tested in doe Station Laoam is 0.02 mg/L. All values less than this limit are reported for information only.I 0 25 so 75 100 125 Mlnutls 150}}
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