• No. TXUT-001-PR-017 E N E R C O N PROJECT REPORT fcellence--ryptoject E'vy ddy, COVER SHEET REV. 1 PAGE NO. 1 of 13 PROJECT REPORT For the Evaluation of Lake Granbury Water Temperature Due to the Operation of CPNPP Units 3 and 4 Independent Review Required: No Prepared by: Jar Reviewed by: 9_?ýLd1C~I)4 ~ ' Reviewer Reviewed by: Aikm (:' <'/ Indepe6dent Rdvieh(er Approved by: Date: -5-11-519 Date: Date:, Dat:_________ ProtpiManag&r or Designee
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Project Report, TXUT-001-PR-017, Rev. 1, 'The Evaluation ... · Perry's Chemical Engineers' Handbook (Reference 5),and& included in Attachment'AA. 2. Surface or natural evaporation
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• No. TXUT-001-PR-017E N E R C O N PROJECT REPORTfcellence--ryptoject E'vy ddy, COVER SHEET REV. 1
PAGE NO. 1 of 13
PROJECT REPORT
For
the Evaluation of Lake Granbury Water Temperature Due to theOperation of CPNPP Units 3 and 4
Independent Review Required: No
Prepared by: Jar
Reviewed by: 9_?ýLd1C~I)4 ~ 'Reviewer
Reviewed by: Aikm (:' <'/Indepe6dent Rdvieh(er
Approved by:
Date: -5-11-519Date:
Date:,
Dat:_________
ProtpiManag&r or Designee
No. TXUT-001-PR-017PROJECTREPORTF~-ENE RCON_ for RE.
£ •-• • •, the Evaluation of Lake PAGE NO. 2 of 13Granbury Water:Temperature'
Due to the Operation of_ _ _ _ _ _ _ _ _CPNPP Units 3 and 4 .......
PROJECT, REPORT REVISION STATUS
REVISION DATE DESCRIPTION
0 5/7/09 Initial Issue1 511.5/09 Revised to provide
additional reference.;and'data
irfforrhation. Alsorevised control
boundary.
PAGE REVISIONSTATUS
PAGE NO. REVISION PAGE NO. REVISIONAll: 0-A ll '
APPENDIX REVISION STATUS
APPENDIXNO. PAGE NO. REVISION NO. APPENDIX NO. PAGE NO. REVISION NOadded F ALL 1 A,B,C,,D,E' ALL 1
No. TXUT-001-PR-017PROJECT REPORT REV.EN ERCO.. N for REV. I
the Evaluation of Lake PAGE NO. 3 of 13Granbury Water-Temperature
E.cefena-Evrypro]j-m, dy the Evaluation of Lake PAGE NO. 4 of 13Granbury Water Temperature
Due to the Operation ofCPNPP Units 3 and 4
Summary
The evaluation uses a control volume/energy balance approach based on the first law ofthermodynamics or conservation of energy to determine the daily temperatures of the lowerLake Granbury volume (upstream of DeCordova Dam). The methodology uses the highestdifferential temperature between the discharge and the background temperatures, historicallyoccurring: during the winter months, and a period of low flows through the lower lake volume.Historical data with a reasonable number of recorded river temperatures (river temperatureswere not recorded on regular bases) and times where low flow rates through the, lower' lakevolume were searched. A 65-day period between December 11, 2001: and February 13, 2002was selected for evaluation along with assumed preliminary design information forthe proposedComanche Peak Nuclear Power Plant (CPNPP) Units 3 and 4. The nettemperature increase forthe 65-day period is conservatively evaluated to be <1.00°F, which would be mitigated by thelake's surface evaporation.
No. TXUT-001-PR-017PROJECT REPORT REV. I
ENERCON for REV.!the Evaluation of Lake PAGE NO. 5 of 13
Granbury Water TemperatureDue to the Operation of
CPNPP Units 3 and 4
Purpose
The purpose of this evaluation is to enhance the information supplied in the CORMIX runs forthe iowerLake Granbury area and to verify results would meet the predicted permitrequirements. CORMIX inputs a single flow regime for the river or lake that provides a plume forthe thermal or toxin input. Low lake or river flow conditions reliably provide the largestconservative thermal plumes that will meet permitted or proposed permitted conditions ascalculated by CORMIX; however, CORMIX provides no information on possible accumulationsof heat. This energy balance provides a conservative estimate of heat accumulation in the areabetween the cooling tower blowdown discharge and the lake intakes.
Results
The cooling tower blowdown discharge into Lake Granbury will create a plume that is warmerthan the surrounding environment and will, therefore, be more buoyant. The plume will spreadacross the, surface of the control volumewith enough. energy to iniduce additional evaporation.This evaporation provides the largest heat transfer from the control volume and is modeled as a
cooling pond for this report. The heattransfer, along with normal mixing limits, will heat the arealess than 1IF and agrees with the CORMIX findings. In addition, the normal evaporation thatequates to more than 1.7 billion btu/day (Reference 12) removed from the lake surface will morethan mitigate the heat buildup determined by this evaluation. Therefore, the discharges from theplant into Lake Granbury should meet the predicted permit requirement of less than 3°F heatbuildup.
References
1. Banerjee, T., M. Cerha, K. Kallfisch, and R. Dalal. TXU - Comanche Peak Units 3 and 4,Optimization Study for Secondary-Side Cooling Water*System. August 15, 2007.
2. Boss, SK., Ph.D., P.G. Bathymetry and Volume Storage of a Portion of Lake Granbury,Hood County, Texas. Department of Geosciences, University of Arkansas, Fayetteville,AR. July 11, 2007.
3. Brunett, B. Brazos River Authority, Hydrologist. Personal Communication, E-mailRequests for Historical Darn Release Data. July 13 and October 1, 2007.
4. National Oceanic and Atmospheric Administration (NOAA), National Climatic DataCenter (NCDC). Thirty Years (.1977 - 2006).of Meteorological Data for Minera! Wells,
Texas, Station No. 93985. http://cdo.ncdc:noaa.gov/cgiibin/climatenormals.pl?directAccessed January 7, 2008.
5. Perry, R. H., and D.W. Green. Perry's Chemical Engineers' Handbook, 7 t" edition, 1997.McGraw-Hill, Inc., New York.
No. TXUT-001PR-017PROJECT REPORT REV. I
for REV._1Elenc•--Every ,ojecver,yd ty. the Evaluation of Lake PAGE NO.6 of 13
Granbury Water TemperatureDue to the Operation of
CPNPP Units 3 and 4
6. Sammon, J. Brazos River Authority, Environmental Planner. Personal Communication,E-mail request for Lake Granbury Historical Temperature Data. June 15, 2007.
7. Texas Commission on Environmental Quality (TCEQ). Water Use Data, TCEQ ExternalPublishing FTP Server. ftp:/Iftp.tceq.state.tx.us/pub/OPRR/waterrights/ Accessed April2009.
8. U.S. Geological Survey (USGS), National Water Information System. USGS SurfaceWater Data for the Nation, Water Data for Texas. http://waterdata.usgs.gov/tx/nwis/Accessed April 2009.
9. Ward, G.H. Potential Impacts of Comanche Peak Cooling Tower Operation on TotalDissolved Solids in the Lower Reach of Lake Granbury. Consultant in Water Resources.January 31, 2008.
10., Boss, S.K. White Paper: Revised Elevation-Area-Volume Estimates for Lake Granbury,Hood County, Texas. May 11, 2009.
11. Comanche Peak Nuclear Power Plant, Units 3 & 4, COL Application, Part. 3Environmental Report, Rev 0. Table 2.7-45.
12. Comanche Peak Nuclear Power Plant, Units 3 & 4,, COL Application,, Part 3Environmental Report, Rev 0. Table 2.3-2.
Data
mv is in Ibm and is obtained from the bathymetric volume in acre-feet (Reference 10) andconverted to Ibm using the following conversion:
* ~ ga 3581 IIbmAcre - feet ga325,851 g * 8.34 Ibmacre - feet gal
where:
8.34 Ibm/gal is the mass of water per gallon for the temperatures examined (Reference5).
Cp specific heat of water is -1 btu/Ibm OF (Reference 5).
mr is the daily mass flow rate through the bathymetric volume in Ibm/day. Volumetric flow ratewas provided by the Brazos River Authority'(Reference 3). The volumetric flow isconverted to mass flow (Ibm/day), as follows, to determine the mass flow rate used inthe evaluation:
Ibm = cfs * 448.83 *gpm 8.34*bm,60 min 24 hrday cfs gal .hr day
No. TXUT-001-PR-017~~ ~PROJECT REPORT RV
E N E R CO N for REV.__rr-Evy•project Eve,da the Evaluation of Lake PAGE.NO. 7 of 13
Granbury Water TemperatureDue to the Operation ofCPNPP Units 3 and 4
Where:
gpm is the volumetric flow rate in gallons per minute.
md is the daily discharge flow in Ibm/day. Volumetric flow rate was provided by the URSoptimization study (Reference 1).. The volumetric flow is converted to mass flow(Ibm/day), as follows, to determine the mass flow rate used in the, evaluation:
ibm _ * ibm min hrIbm- gpm * 834- * 60- * 24-day gal hr day
Where:
gpm is the volumetric flow rate in gallons per minute.
mi is the daily intake flow in Ibm/day. Volumetric flow rate was provided by the URS optimizationstudy (Reference 1), plus Wolf Hollow and CPNPP Units 1 .and 2 historical data. Thevolumetric flow is converted to mass flow rate (Ibm/day), as. follows, to determine themass flow rate used in the evaluation:
Ibm Ibm 60min hr__--=gpm *8.34- * 6--' 24 -day gal hr day
Where:
, gpm is the volumetric flow rate in gallons per minute
mri is the additional daily upstream flow into the bathymetric volume due to the difference. in theflow between intake and discharge flows in Ibm/day.
tv begins as the initial average lake temperature and is the evaluated daily volumetrictemperature for each day thereafter. The initial average daily temperature of the lake isthe average of temperatures from 12/11/2001 (55.940F), 1/9/2002 (52.6820F), 1/15/2002(49. 1F), and 2/13/2002 (49.334°F) provided by the Brazos River Authority for the 65-day study (Reference 6), and calculated to be 51.7640 F.
ti is the initial average lake temperature. The initial average daily temperature of the lake is theaverage of temperatures from 12/11/2001 (55.94°F), 1/9/2002 (52.6829F), 1/15/2002
No. TXUT-O01-PR-017PROJECT REPORT REV.IEF.,I E N E R C 0 N for V.
E•rCeI~en---&j__,*C y,• the Evaluation of Lake PAGE NO. 8 of 13Granbury Water Temperature
Due to the Operation ofCPNPP Units 3 and 4
(49.1°F), and 2/13/2002 (49.334°F) provided by the Brazos River Authority for the 65-day study (Reference 6) or 51.7640F.
td is the discharge temperature based on bin data from the URS optimization study (Reference1). Average daily wet bulb temperatures as determined from Reference 4 are used 'inassociation with bin data from the URS optimization study (Reference 1) for the selectionof daily intake and discharge flows, along with the discharge temperature.
Additional evaporation .(md*Cp*Athl) used-to determine the evaporation losses from the volumeis found using cooling pond 'information from Perry's Chemical Engineers' Handbook(Reference 5). The area of the cooling pond used for cooling the maximum dischargetemperature down to an acceptable temperature is found using' the nomograph(Attachment A) from Reference 5 and is found to have an approximate size of 118.83acres. The cooling pond size in Ref. 5 is smaller than the area being evaluated (281.60acres in Reference 10) and is considered conservative for this study. The temperature(thl) used is the difference in the discharge temperature and the daily volumetrictemperature, minus the cooling pond approach of 3'F from Reference 5. The md value isnot the mass evaporated, but is used to determine the heat used for evaporation inaccordance with Reference' .5 guidance.
No. TXUT-001 -PRM01 7EN ER C PROJECT REPORT RE.
F- E NI E R C O -N for • REV. 1I__•__the Evaluation of Lake PAGENO. 9 of 13
Granbury Water TemperatureDue to the Operation of
__ CPNPP Units 3 and 4
Assumptions
1. Additional evaporation is estimated: in accordance with cooling pond information frpmPerry's Chemical Engineers' Handbook (Reference 5),and& included in Attachment'AA.
2. Surface or natural evaporation and solar loading were .neglected within the formalevaluation, but provide .basis forthe assumption that zero energy would be transferredacross the control surface.
3. Units 3 and 4' discharge temperatures and-flows are based on daily average wet bulbtemperatures in Ref. 4 and correlate with values from Reference 1.
4. Units 3 and 4'intake flows are based on daily average wet bulb temperatuhres, inReference 4. and correlate with values from Reference; 1..
5. Daily lake temperatures were not available; therefore, the baseline lake temperature isthe:average of the four lake temperatures for the 65-daylrun.
6. The highest differential lake temperatures as compared to thecooling'tower dischargeare assumed to occur during the winter months'.
7. Actual permit. conditions were not available;' therefore, information from the TexasA'dministrative..Code is used. The permit Condition for temperature change.is assumed-tobe less than 30F for the plant discharge (Reference 7).
8. Conservatively assumed winds are 2 mph for the. Lake 'Granbury area. Using Table2.7"45 of Reference 11., wind speeds for the area near c PNPP are less than. 7.5 mph,verifying the conservatism of this assumption.
9. No rain or snow is assumed. for this, evaluation period-10.. All worksuch as. boating, actions-of wildlife, etc. are considered negligible.11. There is no mass gained or lost froni the control volume during'this evaluation. Actually
mass is lost due to evaporation in the-area, but is considered negligible due to thecooling that would' occur with this phenomenon.
12.. The cooling pond approach of 30F is Used because the discharge pond depth' isgreaterthan .5 feet.
13.. Heat transfer between earth and pond, changing temperature and hu midity .pf the air asit transverses the water, and rain have minor effects, on heat transfer for cooling ponds:(Reference'5), and therefore are assume'd negligible forthis evaluation.*
14. The variation temperature as defihed in Reference 5 of plus or minus 30F is assumed tobe.OOF for this report, and considered to be Conservative because of the large -surfacearea being evaluated.
No. TXUT-O01-PR-017~ , PROJECT REPORT REV. 1IN , ENERCON for-- Ey•d the Evaluation of Lake PAGE'NO. 10 of 13
Granbury Water Temperature,Due to the Operation of
CPNPP Units 3 and 4
Methodology
The first law of thermodynamics for a control volume is the approach ýused to evaluatethe laketemperature conditions around the discharge and intake structures. No mass is gained or lostduring this evaluation; however, the mass flow rates used provide weighted energy Yvaluescrossing the control surface.
The, basic equation for steady state conditions ,is as follows:.
E,,,, 2 j 4 2 [ 2
Where:
'Plant (Unit 3& 4)discharge heating
Q is rate of energy transfer by heat across abouhdary in btu/day
No, TXUT-00O-R-017r PROJECT REPORT REV. 1
A ENERCON, t. for- t Evaluation of Lake PAGE NO. 11 of 13
Granbury Water TemperatureDue to the. Operation ofCPNPP Units 3 and 4
W is the rate of energy transfer by work across a boundary in watts. Work is, negligible andconsidered zero for this evaluation.
The velocity (V) across the control surface does not changeand is therefore neglected.
z is elevation in feet. There is no elevation (z). change across the control surface and is z.therefore zero.
h is: specific enthalpy in btu/lb.
gis gravitational acceleration..
r is mass flow rate in lb/day.,
Therefore the equation is as follows:
i7;h - nh hin ex
h Cp T
in ex
ex represents theenergy values exiting the control surface;
in representsý the energy values entering the control surface.
The following equation providest the internal energy in the control volume6
T2 represents the final temperature in OF.
T1 represents the. initial temperature in *F.
S=rn Cp-(T2 - "1 )
Q =m Cp T2 -m Cp T1
Combining these equations results in the governing equation:
T= {(mCpT +Y± hCpT-XrhCpT 'J÷ptmin ex
No. TXUT-001-PR-017PROJECT REPORT REV.I
FAENE N forcec-LEtyprojea Ee.ryd the Evaluation of Lake PAGE NO. 12 of 13
Granbury Water TemperatureDue to the Operation ofCPNPP Units 3 and 4
The inlet energy equation is broken down as follows:
rh Cp T = rmr Cp T, + rhri Cp Tj + md Cp Tdin
Where:
mr is the inlet mass flow due to dam operation, which brings about flow through the control,volume 'in Ibm/day.
mri is the mass flow across the control surface due to additional intake flow in-Ibm/day.
md is the mass flow from Units 3 and 4 in Ibm/day.
Tj is the initial temperature in 'F.
Td is the discharge temperature in 'F.
Cp is specific heat of water,, which is equal to approximately 1 btu/Ibm°F.
The exit energy equation is broken down as follows:
mrh Cp T = ihi Cp T, + mr Cp T, + md Cp AT 0ex
Where:
mi is the mass intake flow in Ibm/day.
mr is the through control volume flowt(same as in the inlet energy equation above).
md is the mass discharge flow as used per Reference 5 to determine evaporation in Ibm/day.
T, is the temperature of the control volume that is changing on a daily basis in -°F.
ATe is the difference between the discharge temperature and Tv, minus the approachtemperature of 3F.
Evaluation
The evaluation for determining the net temperature increase of Lake Granbury due to operationof CPNPP Units 3 and 4 for the 65-day period is detailed in the following table.
No. TXUT-001-PR-017_• PROJECT REPORT
for
REV.
the Evaluation of Lake Granbury Water Temperature PAGE NO. 13 of 13Due to the Operation of CPNPP Units 3 and 4
EVALUATION FOR DETERMINING THENET TEMPERATURE INCREASE OFLAKEGRANBURY DUE TO THE OPERATIONS OF CPNPP UNITS 3 AND 4
&U•wre-F-Irmle,•t Ero -y •• the Evaluation of Lake Attachment AGranbury Water Temperature Page I of 3
Due to the Operation of CPNPPI Units 3 and 4
COOLING POND INFORMATION(Reference 5)
EVAPORATIVE COOLING 12-23
10 Coong CafoG I.o SoeaC Ondin$sig
-- Sevice
aI -i 0
90:
fill
70
To 80 0 O
Ternap WoIe Leoving NotZles, Dte.F.
FlO. 12.24 So oal cl~i~oaaaca~eI. (,lacaiaara u laj a-{;Im it ".. la h -1 410
at , 1laiacall,
COOLING PONDSWhe.n oiapCeoC-1111-1 lars a1fre -lble. l-451in! f
5i heal fli tn aarer..A pand slot I, N! ustn
TABLE 12-4 Dag-e Adjusitmntrit 11611 Applied to Laervirig-AirWetaBulb Temperature to Find ¢ooled-Wrair TemparacurasaofSpray Ponds"
FSla, ar. nat i na•Aa~ .aa'a a F.WeFBl Tm .tot-toFn heoI Wet 0 Tept-tso
Cco la} -3 +2alIliaatloa Lo f
70 - I, I3 ÷5
25 -15 +3, Z
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No. TXUT-001-PR-017O E N E R C 0 N PROJECT REPORT REV. I
the Evaluation of Lake Attachment AGranbury Water Temperature Page 2 of 3
Due to the Operation of CPNPPUnits 3 and 4
12-24 PSYCHROMETRY, EVAPORATIVE COOUNG, AND SOUDS DRYING
0
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A=PxQ, 145x16=232ft^2/gpm
232 ftA2 i gpm x 22312 gpm = 5176384 ftA2
5176384 ft^2 / 43560 are / ftA2 = 118.83 acres
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'No. TXUT-001-PR-017PROJECT REPORT REV. I
.._ N for- £ . the EValuation of Lake AttachmentA
Granbury Water Temperature Page 3 of 3Due to the Operation of CPNPP
Units 3_and 4
.Mpac utiktt ,
SOLIDS-ORYING FUNDAMENTALS 12-25
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ý NI 1p 0t t~rl D t.N S, IN'S.
INTRODUCTION
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No. TXUT-001-PR-017PROJECT REPORT REV. I
ENE RCON forExcd1mce-Every rjertL - the Evaluation of Lake Attachment B
Granbury Water Temperature Page 1 of IDue to the Operation of CPNPP
__ Units 3 and 4
BIN INFORMATION(Reference 1)
D.,B.n 8Bin 9
Bin 10
Bin 22Bin 13
I..Bin aBin 9Bin 10Sin 11Bsin 12Bin 13
Feb
Bin 9Bin 9
Bin 10Bin 11Bin 12Bin 13
IntawB floww.t b.l diob.rs. t.rnp di0h-n flow pa Unit •tr •ntu.
No. TXUT-001-PR-017ERN PROJECT REPORT REV.E E C Nfor RV
. -,. j.. the Evaluation of Lake Attachment E
Granbury Water Temperature Page 1 of IDue to the Operation of CPNPP
Units 3 and 4
OTHER INTAKE FLOWS(Reference 7)
13niv, I and M" M ion I Ws I. Uf tporm
Jai lI J 113,4177 5 77 7
Month OV-mth|..o.sirno= Iffelin./day gilons•um I ionsi
.;:2r1.0 'll 08('114717; 2954)AI 123099P]J61 (JOSIAS" ,• ,•4,41''0 81 ')•6"A1 H 19%M i 1O R461?151 13.%.71112 N
D•, blid Jin hnsot Fob t0tS|32019.59 ISS34.9 118.9$33
.... No. TXUT-001-PR-017PROJECT REPORT REV.I
rý.ENERCON for___for REV., _________
fie-f--E, rm c' the Evaluation of Lake Attachment FGranbury Water Temperature Page I of 5
Due to the Oper ation of CPNPPUnits 3 and 4
REVISED ELEVATION-AREA-VOLUME ESTIMATES FOR LAKE GRANBURY,HOOD COUNTY, TEXAS
(Reference 10)
Revised Elevntion.4rca-Volurne Estimates for Lake Granbun,,: Hood County, Texas
Stephen K. Boss, Ph.D., P.C.Department of GCeosciencesUniversity of ArkansasFayettevile, AR
SUMMARY":
Mr. DarTen Lovvom requested revised estimates for elevation-aren-volume relations for amodified region of Lake Grabnbur. corresponding to a pool elevation of 691 fl.on 8 May 2009(Fig. 1). Theic modified area is reduced somewhat from the original mapped area of LakeGranbury. 'the normal conservation pool of Lake Granhurv is 693 ft a~d-lihe original studiedarea was 577 acres. "llie modified area that is subject.of this brief amalysis is3 1 0-acres (53.7%.ofthe original.area) and 2 feel below the normal conservation pool.
The are~a for which calculations hav\e been completed includes the main body of the reservoirlessthe area ol'the prdminent ahn imniediately northwest or D)e Cordova liend l)Dm. Bathymetriedata were not available for the prominent lake ann immediately northwest of the De CordovaBend Dam. 'T'his arm is approximately 30 acres and presumed to be relatively shallow (<6 11).As such. it very likely represents a relaitvely small volume ofthe studied area (less than 180 acreIcet at 691 Rt. elevation). Note that no data for this ann were reported on prior reports. so resultsreported here will be compamrable to prioi reporis.
'The area l'ur wvljiit result', me reported here haes a uttitsured surfaee ar'eii of 281.6 acrrs. '1he
estitiialed voltime storage of this a.rea at 691 fl. elevation is 9,.668 acre-feet, This volumne is ca.62% of the volum elstimated for the original study area. Again, the proimtin3t lake arm NW ofLhe darn site may contribute an additional 100-200 acre-feet to this toalaif included. *fhougli thearea that is subject of this analysis is only slightly more than 501% of the original area, it contains62% of the storage volume owing to the fact that it includes the deepest. portions of tle reservoiralong an incised portion of the forner course of the Brazos River.
Figure 2 of this report illustrates area versus elevation•relations for this portion of the reservoir.The overall tonn of this Curve is comparable to that inthe original report for the larger mappedarea. Thie piromineiit ciangcs -in slope of tlhe curve apparently refleet the presence of now-s1bmerged stream terraces of the Brazos River..
Figure 3 illustrates area versus volumne relations within this portioeof the reservoir. Note that.area becomes constant as the reservoir is bound along its margins by outcrops with nearlyvertical walls. 'ltus, reservoir area does not increase as volume increases due to rising lakelevel.
Figure 4 shows the relation of reservoir volume to elevation. This curve is quite typical ofriverimpourndments. and is comparable to that front the original report for this reservoir.
No. TXUT-001-PR-017PROJECT REPORTENERCONfor REV. I
the Evaluation of Lake Attachment FGranbury Water Temperature Page 2 of 5
Due to the Operation of CPNPPUnits 3 and 4
REVISED ELEVATION-AREA-VOLUME ESTIMATES FOR LAKE GRANBURY,HOOD COUNTY, TEXAS
(Reference 10)
Ytg. I False cdoroifrared image of Lake UJanburyimapping a•e, hood Cowtly, TX. The aea for wvtchreservoir elevationk waes, and volumes was calculatedindicated bythe wee oetlinedwithyellow boudm bythe geen dahed lines (area limits provided by Mr. Duren Lovvom, P.G, Eaercoi, Inc. on OS May 2009).
No. TXUT-001-PR-017LT.I__ E N E R C. O N PROJECT REPORT REV. r
ExceIlence--•ay ProjrcL clydn.ý the Evaluation of Lake Attachment FGranbury Water Temperature Page 3 of 5
Due to the Operation of CPNPPUnits 3 and 4
REVISED ELEVATION-AREA-VOLUME ESTIMATES FOR-LAKE GRANBURY,HOOD COUNTY, TEXAS
Fig. 2 Rt- 'ora e• v- elg'wkm fr thw ,,fnified - d-pideod in Fiý I, This co'e compares favornbIy lotIhi pe nrm d in the alioinIl repoal onbzobyicuic ma.ppiq in tiso Inl.
No. TXUT-001-PR-017PROJECT REPORT REV. I
ENE RCO N for REV,_1.E*ezkce- 'ee/ProkCL v -" the Evaluation of Lake ' Attachment F
Granbury WaterTemperature Page 4 of 5Due to the Operation of CPNPP
Units 3 and 4
REVISED ELEVATION-AREA-VOLUME ESTIMATES FORHOOD COUNTY, TEXAS
(Reference 10)
LAKE, GRANBURY,
GRANBURY LAKE MODIFIED MAPPING AREA vs VOLUME
S
w
0
0,0000 50.0000 100.0000 150 0000
AREA (acres)
Rg.3, ba.era ve'rsus vulurre cut.w, for the modirie.d study" war
200,0000 250,0000 300.0000
No. TXUT-001 -PR-017• E N E R C 0 N PROJECT REPORT REV. Ifor REV._1
the Evaluation of Lake Attachment FGranbury Water Temperature Page 5 of 5
Due to the Operation of CPNPPUnits 3 and 4
REVISED ELEVATiON-AREA-VOLUME ESTIMATES FOR LAKE GRANBURY,HOOD COUNTY, TEXAS
(Reference 10)
GRANBURY LAKE ELEVATION vs VOLUME FOR MODIFIED MAPPING AREA