I Duke Bryan J. DolanOwEnergyo VP, Nuclear Plant Development

Duke EnergyECO0DI 526 South Church StreetCharlotte, NC 28201-1006

Mailing Address:P.O. Box 1006-ECO0D

December 3, 2008 Charlotte, NC 28201-1006

704-382-0605

Document Control Desk bjdolan@duke-energy.com

U.S. Nuclear Regulatory CommissionWashington, DC 20555-0001

Subject: Duke Energy Carolinas, LLCWilliam States Lee III Nuclear Station - Docket Nos. 52-018 and 52-019AP1000 Combined License Application for theWilliam States Lee III Nuclear Station Units 1 and 2Response to Request for Additional InformationLtr# WLG2008.12-04

Reference: Letter from J.M. Muir (NRC) to B.J. Dolan (Duke Energy), Request forAdditional Information Regarding the Environmental Review of theCombined License Application for William States Lee Nuclear StationUnits I and 2, dated August 21, 2008

This letter provides the Duke Energy response to the Nuclear Regulatory Commission's(NRC) requests for the following additional information (RAI) items listed in thereference letter:

RAI 55, Aquatic EcologyRAI 56, Aquatic Ecology

Responses to these NRC requests are addressed in the enclosure which also identifiesany associated changes that will be made in a future revision of the William States LeeIII Nuclear Station application.

If you have any questions or need any additional information, please contact Peter S.Hastings at 980-373-7820.

Vice PresidentNuclear Plant Development

www. duke-energy. com

Document Control DeskDecember 3, 2008Page 2 of 4

Enclosure:

1. Responses to RAI 55, Aquatic Ecology and RAI 56, Aquatic Ecology

Document Control DeskDecember 3, 2008Page 3 of 4

AFFIDAVIT OF BRYAN J. DOLAN

Bryan J. Dolan, being duly sworn, states that he is Vice President, Nuclear PlantDevelopment, Duke Energy Carolinas, LLC, that he is authorized on the part of saidCompany to sign and file with the U. S. Nuclear Regulatory Commission thissupplement to the combined license application for the William States Lee III NuclearStation and that all the matter and facts set forth herein are true and correct to the bestof his knowledge.

Subscrid and swornt me on Dpc -b 3- 3, o-

Notary Public

My commission expires: ~LL~Z ~Lz~ ~&fl

SEAL

Document Control DeskDecember 3, 2008Page 4 of 4

xc (wo/enclosure):

Luis Reyes, Regional Administrator, Region IILoren Plisco, Deputy Regional Administrator, Region IIThomas Bergman, Deputy Division Director, DNRLStephanie Coffin, Branch Chief, DNRLGregory Hatchett, Branch Chief, DSER

xc (w/enclosure):

Linda Tello, Project Manager, DSERBrian Hughes, Senior Project Manager, DNRL

Enclosure No. 1 Page 1 of 2Duke Letter Dated: December 3, 2008

Lee Nuclear Station Response to Request for Additional Information (RAI)RAI Letter Dated: August 21, 2008

Reference NRC RAI Numbers: ER RAIs 55 and 56

NRC RAI:

ER RAI 55: Provide the finalized Make - Up Ponds A and B intake structure designs andupdated descriptions when they are available. Include information on any fish -friendly parts of the design, or indicate why they are not included in the finaldesign.

ER RAI 56: Provide the finalized cooling water intake and discharge structure design and anupdated description when it is available. Include information on traveling screensand parts of the design that make it "best available technology" for protectingaquatic organisms.

Duke Energy Response:

Preliminary drawings of the intakes and discharge structures are attached to this response.Drawings WLG-7500-CCH-001 and WLG-7500-CCH-002 provide existing conditions, planarrangement, plan view, and sections for the river water intake. The intake will be equipped withtraveling screens, with 3/8 inch or smaller mesh, installed in the vertical position and designedfor continuous operation. The screens are of the modified "Ristroph" design with Fletcher typefish-friendly buckets on each screen basket. The screens have dual pressure spray headersystems with separate fish and debris troughs. The troughs are supplied with supplemental flowsufficient to move the fish and debris through the separate return troughs. The fish return troughwill exit the intake on the downriver side and return the fish to the section of the Broad River.The river water traveling screens are designed to provide a through velocity that is less than 0.5foot per second. After passing through the intake the water is conveyed by a pipe to thenorthwest comer of Make-Up Pond A where it is discharged into Make-Up Pond A through asurface outfall.

Drawings WLG-7510-CCH-001 through WLG-7510-CCH-003 describe the Make-Up Pond Aintake structure. The structure is currently designed with removable panel screens with a 3/8inch or smaller mesh and a through-velocity that is less than 0.5 foot per second. Duke iscurrently evaluating the civil, mechanical and electrical requirements for the use of travelingscreens similar to the traveling screens described for the river water intake.Drawings WLG-7520-CCH-001 through WLG-7520-CCH-004 describe the Make-Up Pond Bintake structure. The structure is currently designed with a submerged inlet (see WLG-7520-CCH-002 and WLG-7520-CCH-004) approximately 50 feet below the surface and removablepanel screens at the intake structure (see WLG-7520-CCH-003) with a 3/8 inch or smaller meshand a through-velocity that is less than 0.5 foot per second. Duke is currently evaluating thecivil, mechanical and electrical requirements for the use of traveling screens similar to thetraveling screens described for the river water intake.

Enclosure No. 1 Page 2 of 2Duke Letter Dated: December 3, 2008

Drawings WLG-3900-P6H-001 through WLG-3900-P6H-003 describe the wastewater dischargestructure and its mountings on the Ninety-Nine Islands Dam. The discharge water will betransmitted through a 36-inch diameter high density polyethylene (HDPE) pipe anchored to theNinety-Nine Islands Dam approximately five feet below the full pond elevation to the diffuser.The design of the diffuser is not defined at this time (e.g., the diffuser drawing detail in WLG-3900-P6H-002 does not depict the final arrangement of holes in the diffuser). The final design isexpected to be similar to that shown in ER Figure 5.3-4.

Associated Revisions to the Lee Nuclear Station Combined License Application:

None

Associated Attachments:

Attachment 55/56-1

Attachment 55/56-2

Attachment 55/56-3

Attachment 55/56-4

Attachment 55/56-5

Attachment 55/56-6

Attachment 55/56-7

Attachment 55/56-8

Attachment 55/56-9

Attachment 55/56-10

Attachment 55/56-11

Attachment 55/56-12

WLG-7500-CCH-001, River Water Intake Structure Location Plan

WLG-7500-CCH-002, River Water Intake Structure Outline Plans andSections

WLG-7510-CCH-001, Pond A Intake Structure Location Plan

WLG-7510-CCH-002, Pond A Basin Intake Structure Section A

WLG-7510-CCH-003, Pond A Intake Structure Outline Plans andSection

WLG-7520-CCH-001, Pond B Intake Structure Location Plan

WLG-7520-CCH-002, Pond B Intake Structure Section

WLG-7520-CCH-003, Pond B Intake Structure Outline Plans andSections

WLG-7520-CCH-004, Pond B Intake Drop Inlet Plans and SectionsWLG-3900-P6H-001, WWS Discharge General Area Plan

WLG-3900-P6H-002, Discharge Pipe Support Details

WLG-3900-P6H-003, General Notes Raw Water System and WasteWater System

w o0STAOE

EXISTING CONDITION PROPOSED PLAN ARRANGEMENT

LEcEN..- LTIS W OISYl-CM- MT4TTEM LNES.Z FT INTERVAlS

T0*T LIOS.S FT INTERVALS

IF. . LACES I ERSISTIN4IAC E a EXSTAG N TWIVALI*,.a .1Cf =u,--masA

coF~-e mRA~M -*• - -•T•N -r - - F - eeU I ---- ---- ----

EVATALI 0m It 0 TOESEOD IALIVTENRRE-E OYEER I-EH 0FV C0100ý, .E -. "s

PmR-'T LLm1 wr[xmME COFTIO ILL BE POE OTlRW- -T ARDAT I - -

STOTTA ARLACIO ETIL COASIACIIOL REu~rk

WAAAI -cSCKfuMOENTTOINAIC RIRCIAL.S P E"IE NVO C11EE"lSS. EILILI.ICUA STATES LEE IIlWOCtEAR STLTMIRA e

SECTIۥON A-tAOimelxlal~/m0

NOTES:1. o CtW*LfL i,$ t•t MtrG x.q-vWO-,.-O€3.

9 M I'.-"

MAT PLAN 0 EL. 497-0 'ECK PLAN 0 EL. 537'-S"

L:l

LOCATION PLAN - POND ARAW WATER INTAKE STRICTULE

SCAE: t.wQOEXISTING CONOTION

SCALE: r-.5-o

LEGEND:r

NIT AsT-

MI. StPA OtF -I-litM'WPitf2-IUW . V: es MtL K .t0 . A FAt

tltS IC-E L tl OOOt.KI•t~

2. Wtootu or4 KA'VAOA W~on P0TW Sttttil itOOtnitrt(t t$iOtulit itt o fl vU MWrr Citit . "POAO

MW EL€[[nVp CWLMS.P*LLS

."II-J4 StUtES LEE Ill-ULE.t STATION

POON A INTAOKE STRUICTLCSLOCATION PLAN

rin

F__ :-EL EE t o,.

_J J -J

MAT PLAN Q EL 510'-0" PLAN SECTION @_EL 54T-6" DECK PLAN @ EL 554-6

NOTES:

FPRELIMINARY

h[C SalTY VASSIFICslTIOE I

ou• [N[EGy CARL~TýSLLI

VI ELLIW4 S~t&ES LIE I..N[LMSTATIOM

PONO A INTAKE STRUCTUREOUTLINE PLANS AN SECTIONT

Till

I -'I6..

111 1

NoTES.*

LIm'£E mv wa-ý Wl•• •Q~I 4NOAL L DITUB•CE ITNCLUDE "L "T, MT,,.l..1W tI" BE a.-TC -C~ AS NEL AS T-1 ARATWAC iT.D a, "WAL" TIO AAK)t OSOSEýT iAS"

OF THE COFTON s[o xsT •ýI LTKAIZDTWEINO W•L•.• • PCUP NrVO0T

TO TIC NORTHS M OF EiXISTIN CUETMAO

k (51MVIN STEE. 5100W! WATTS PIK$TS tedCONCRETE JiT•ME UT COT. K KNDNO•l

G. alieN INS OCLITO A OF" STAdNOC NATERis K! COME•Eo 1T O . M I K TC STATE."SWA WL KIE$ . TL NTS I NECESS R 0 LMT

.OFT i L N TSflCIDI WITH WITITL IN. VIC

AL FO DETAIL. ELEVATIONS MON0 WAIT LEMELKTTIM'o ETCINET TR.1TPO - M-0.OES tAEUL AND"'M&IETS, WITy COLLECTET IN 2K AN0 2,5

7. COTFIROA WILL K KICIES AFTER WuW~ STALCLFEAN

SOPEOGiN EWIWYCT SIL K TAUlR SMT TO AENWRENAiKANSýWILtT ITl-F

EXISTING CONDITIONSCALE; 1"-s0"0

LECEND*.- tIS OF OISTT.SWCE- TSITCTW EMLCSIE IT WTTEITIS

TUTTSLIMES. 5TISt ~tas

0 T .0' 12T' 16T,

"ALES t ..

DUSC E[ERGY CAROINIAS. LLCRtmergs VI LIAM STATES LEE III

EWJCLEAR STATION

LOCATION PLANPOND B INTAKE STRUCTURE

-.ncta t-c cut

".-TP4 I

'I AN'" tr SOLNO `C

SECTION t '

NOTES

1111 I 0

I I I I iii I

-t41ii

J3-t tin SflttILmat 'IN.

• -- toUtn- SIC cii

TYPICAL EXCAVATION SECTIONNOT TO SCA.LE

PRELIMINARY

VtEC WETy CLASSIFIrCAlI E

¥.]SUI4 T/IS LEE[ III

PONO 8 INTAKE STRUCTLRESECTION

EZ W___tLG-7520-CCII-092 A

I;+A

SECTIONSC[ Xt r \,

SECTION /(Bs1•: i'.r- "•

NOTES Wt M ~f.

ROOF PLAN 0 EL. 592'-0"

F- -i

. PCI Uýt4 -. I NI MQn-l.

CTON /A" --- ---P1 AN

. POND B INTAKE STRUCTURE DROP INLET

LU

:ýj

EXISTINl CONDITIONSCXt: r.w6o-- PROPOSED PtAN ARRANGEMENT

SC4lE: rT.W0

2. bdtv 0! OSKt. PMq 0tn C• gt lo Ot .'Et tt,

C 1. T.T O t 2 t 0

T01bOt.og 0140 .41141 EF itro.TMCTT

-~ CREST-REST S L. VARIE S

'El ITA iHM-ERCM.)

riIn PON ,A "-* R, r.

:.-2S

•l~j i ,1l.7

ýCIEST

I- %. S5 ISLAN0S DAV,€(E '%S ~ IS F:N(;

CYCLOPEANMASCNRY\ \.

.:. I . W

'"" l ' " ' *"' NORMAL 7" .W

*..L 441.-..... .~~~~.c .....": • ::•" ' v,

SECTEION A

UCREST FL VARIPSINI .; tl.F D-A A HI51R;CALl

PCERF•AT:. IPC'-_ P/YR INr-L_ PLC"O tL 5|l•*? FL• _ (I S -1t .1'

'-.I 5-. 42IA11 75 9 '

1.' 5ISLA4DS GA&

SLUOCGCATE ý'ON)

", y INW EL. 175•5'

.. . . . " . ........ . . '.. ... . " . " . •:-CLOTAX

•-:•: . •" ACI R ."C N,~:• ". ;..6, M~UAX Tom*

E.- 454.7'

.• ' iT,::.. : 0 . :--\- ;.,r--- .. r\. 7 :.. " N .a-\F'~,.A1, ~ L VARIES

,F- o .- 3 ,-1.~-•

SFC71O( 3S-A-E 11'A~-0'

MCCLOPLEA'I

SINSIDE OIfk'CTERý .10RE PIPE "" "•

I "VA L-NO TA\G:NTU-Slt.[ {GSA.V)•""I~ %I • ,.",

tRIPE F-.

SBEAR T P5 R N/' T•H[11.CLI N•AtI A 15

M. m . . .l CA:

LLs

IT E,_ .'.1,'0 0:T(.PCAL__-PIE__SUIPQORT 2L10'-0"l 0._C_.

r,-I" IAA.?*TR JALVENIZE.M LLA• IAUGI4 U-.l)

DWR - 1A'IS5; OA'SII.GOBE WIN$-S D*AýIETE

HSX&G:NAL NLTS SFCTIN STAT

.LEVA-ICN VIEW ®

CYC.-CEAN CO'NCYCE_- ..

, 1. . . .......... ." ..

I W.. .

SRI.. CONCRETE AN, NSTACLmCý-CR BOLT ACCCPD 70 ti SMA'IJFACT•,R~rs PI:O4P'.O','ATOPIS p. 54111 PI ATF" I "P TPS.Jl=II --

p r1t1n' IP"YVfl PP"I 'F IIR I.FDR CElrRAL N3TES S-E O;AWING •LO-3.OC-PEH-C03l '- I 5.MSnr iil 0 h,1 0I• ' I•cV.-in 010G uALPT.iI. rR' 10

-I.STr,ITC:AV.5. r,'PEC VIta ,C VLO*TCO AND TENSUAI.I•CSD INTO 5

LtCY .01,INC TFROIM THE WEST BE-NK

"I CF T--E APOAD RIVER TONA"KI TIE IIDRC-ELECTR:C- 5 POwCRHOUSE. A 6-IND FLANGE WiLL OE PROVIICO

t)PZNG :CNSTAcCutOl IEAII .IN[ ISERI1LL eE :CS7ALLZD A-TEP DISCHARGC PIPE IS

S7A:P.LESS STCEL S ECuk ED.": -'-T-. . - . T.;EAD"D O EURD

IIOL- SIZE ' | J TAIEIOIS S.O., *.CON-nT.CTSN S- Lý AC KRSPO',S:B.o8EVOl TilC CSIGNVIic'oRl 30T r TAýr . i CF HE DIFFUSER tIPE AN:IHORPAQ SYSTEM.CIAVI*[E• PLLS3'miJ N----' 5. 5LTH & 1.NU

ti ýLATE VIO SEEL PI,.A' 4.M.TXal. -- CSICAL UrT rCsCC ASTT!NG n15OJG11 TII:TYPICAL SURFACE MCUNT -LATE 7YPTCAL ANCHOR RILT D7TATL QE1 OTERSI CEN' CF IHtP.F AT FE HSt-PORT :S F-9.SK-

(BY OTHERS) JNLESS NOTED CTH:R';IS: IN PLAN(BY OTHERS)

1. INTAKE WATER STRUCTURES ARE DESIGNED IN ACCORDANCE WITHREFERENCE SPECIFICATION WLG-RWS-MI-001.

2. BASEMAP, CONTOUR DATA AND BATHYMETRY SUPPLIED BYDEVINE TARBELL AND ASSOCIATES, COLLECTED IN 2007 AND 2008.

3. REFER TO SITE PLAN DRAWING WLG-7500-X2H-001 FOR LOCATIONOF INTAKE AND DISCHARGE STRUCTURES.

4. REFER TO MECHANICAL DRAWING WLG-GI-P6-001 FOR PIPINGLAYOUT PLANS.

5. ALL ELEVATIONS AND DIMENSIONS SHOWN ON THE DRAWINGS ARENOMINAL AND SUBJECT TO CHANGE DURING FINAL DESIGN.

6. CONCRETE WORK SHALL CONFORM TO PROJECT SPECIFICATIONSAND BUILDING CODE REQUIREMNTS FOR REINFORCED CONCRETE(ACI-318-05) AND THE SOUTH CAROLINA BUILDING CODE ANDSPECIFICATIONS FOR STRUCTURAL CONCRETE.

7. SPECIFIED COMPRESSIVE STRENGTH OF CONCRETE SIHALL BE4,000PSI AT 28 DAYS.

8. REINFORCING STEEL SHALL HAVE A MINIMUM YIELD STRENGTH OF

60000PSI CONFORMING TO ASTM A615 GRADE 60.

9. ALL STRUCTURAL STEEL SHALL CONFORM TO THE FOLLOWING:

W SIIAPES: ASTMA572 GRADE 50 ORASTM A992PLATES: ASTM A36

10. ALL PLATES SHALL BE 1 INCH THtICK UNLESS OTHERWISE NOTED.

1I. ALL WELDING SHALL BE IN ACCORDANCE WITH AWS DI.t.

12. CONT-RCTOR SHALL BE RESPONSIBLE FOR THE DESIGN OF ALLTEMPORARY STRUCTURES

PRELIMINARY

W' WETY CLASSIFICATII6 E

,ILLIIAM STATES LEE[ III

CNRl r AL NOTESM _AW WATER STEM AND

WASTE WATER SYSTEM

Ii. WLG-"°O-P6*03