ML14066A176

Attachment 7 - UHS Calculation LSCS Design Analysis L-002457, Revision 8, Part 1 of 2

ML14066A176
Person / Time
Site:	LaSalle
Issue date:	02/20/2014
From:	Exelon Generation Co
To:	Office of Nuclear Reactor Regulation
Shared Package
ML14066A250	List: ML14066A174 ML14066A176 RS-14-042, Attachment 7 - UHS Calculation LSCS Design Analysis L-002457, Revision 8, Part 1 of 2 RS-14-042, Attachment 7 - UHS Calculation LSCS Design Analysis L-002457, Revision 8, Part 2 of 2
References
CC-AA-309-1001, Rev. 8, RS-14-042 L-002457, Rev. 8
Download: ML14066A176 (396)

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ATTACHMENT 7UHS Calculation Analysis L-002457, Revision 8LSCS DesignOctober 2, 2013(NON-PROPRIETARY) 1,237 pages follow CC-AA-309-1001 Revision 8ATTACHMENT 1Design Analysis Cover SheetPaae 1 of IDesign Analysis I Last Page No. I Attachment P. Page P58Analysis No.: L-002457 Revision:

1 8 Major [ Minor E)Title: 3 LaSalle County Station Ultimate Heat Sink AnalysisEC!ECR No.:' 389270 Revision:

1 0Station(s):.'

LaSalle County Station Component(s):

Unit No.: ' 1, 2Discipline:

MEDCDescrip.

Code/Keyword:"'

M03Safety/QA Class: Safety-Related System Code: 2 ZZStructure:

13 N/ACONTROLLED DOCUMENT REFERENCES 15Document No.: From/To Document No.: From/ToL-001 581 From L-002456 FromL-001584 From L-001355 ToL-002453 From / ToIs this Design Analysis Safeguards Information?

" Yes U No Z If yes, see SY-AA-101-106 Does this Design Analysis contain Unverified Assumptions?

" Yes [U No 0 If yes, ATIIAR#:This Design Analysis SUPERCEDES:

8 N/A in its entirety.

Description of Revision (list changed pages when all pages of original analysis were not changed):

1;Revision 8 adds evaluation of the UHS transient analyses with an allowable plant intake temperature of 1070Fat a power level of 3559 MWt. This calculation considers weather selection methodology from Rev. 2 ofRegulatory Guide 1.27 and a more realistic heat load rejected to the UHS.Pages Added: J33-40, N19-20,01-042, P1-P58Pages Revised:

1-10, 13-35, 16, J18, N1-N2, N4-N8, N11-N12, N16-N18Pages Removed:

NoneMain Body (62 total pages) + Att. A (22) + Att. B (358) + Att. C (16) + Att. D (12) + Att. E (57) + Att. F (31) + Att.G (72) + Att. H (344) + Att. 1 (22) + Att. J (40) + Att. K (6) + Att. L (58) + Att. M (17) + Att. N (20) + Att. 0 (42) +Att. P (58) = 1,237 total pagesPreparer:

Daniel W. Nevill (S&L) -

LOPrnt NameMethod of Review: 21Reviewer:

2Review Notes: 11(For External Analyses Only)External Approver:

Exelon Reviewer:

'2Detailed Review ZPaul J Szymiczek (S&L)IPrioo NameIndependent review [Peer review FI1Pawel Kut (S&L)Pont NameP/int NMnmaPool NameIndependent 3rd Party Review Reqd? -Exelon Approver:

7' "iyi'/A.4~ 'i 012,113IHI -qa., tiaamaPont Name Date CC-AA-1 03-1003Revision 9Page 7 of 11ATTACHMENT 2Owner's Acceptance Review Checklist for External Design AnalysesPage IaDesign Analysis No.: L-002457Rev: 8No Question Instructions and Guidance Ye/ No N/ADo assumptions have All Assumptions should be stated in clear terms with enough /JZ1 Esufficient documented justification to confirm that the assumption is conservative.

rationale?

For example,

1) the exact value of a particular parameter maynot be known or that parameter may be known to vary overthe range of conditions covered by the Calculation.

It isappropriate to represent or bound the parameter with anassumed value. 2) The predicted performance of a specificpiece of equipment in lieu of actual test data. It is appropriate to use the documented opinion/position of a recognized expert on that equipment to represent predicted equipment performance.

Consideration should also be given as to any qualification testing that may be needed to validate the Assumptions.

Askyourself, would you provide more justification if you wereperforming this analysis?

If yes, the rationale is likelyincomplete.

Are assumptions Ensure the documentation for source and rationale for the 1E2 compatible with the assumption supports the way the plant is currently or will beway the plant is operated post change and they are not in conflict with anyoperated and with the design parameters.

If the Analysis purpose is to establish alicensing basis? new licensing basis, this question can be answered yes, if theassumption supports that new basis.3 Do all unverified If there are unverified assumptions without a trackingassumptions have a mechanism indicated, then create the tracking item eithertracking and closure through an ATI or a work order attached to the implementing mechanism in place? WO. Due dates for these actions need to support verification prior to the analysis becoming operational or the resultant plant change being op authorized.

4 Do the design inputs The origin of the input, or the source should be identified and / EL] Lhave sufficient be readily retrievable within Exelon's documentation system.rationale?

If not, then the source should be attached to the analysis.

Askyourself, would you provide more justification if you wereperforming this analysis?

If yes, the rationale is likelyincomplete.

5 Are design inputs The expectation is that an Exelon Engineer should be able tocorrect and reasonable clearly understand which input parameters are critical to thewith critical parameters outcome of the analysis.

That is, what is the impact of aidentified, if change in the parameter to the results of the analysis?

If theappropriate?

impact is large, then that parameter is critical.

6 Are design inputs Ensure the documentation for source and rationale for the El Dcompatible with the inputs supports the way the plant is currently or will beway the plant is operated post change and they are not in conflict with any -t ooperated and with the design parameters.

licensing basis? I@

CC-AA-103-1003 Revision 9Page 8 of 11ATTACHMENT 2Owner's Acceptance Review Checklist for External Design AnalysesPage lbDesign Analysis No.: L-002457Rev: 8f No Question Instructions and Guidance Ye§/ N N/A7 Are Engineering See Section 2.13 in CC-AA-309 for the attributes that areJudgments clearly sufficient to justify Engineering Judgment.

Ask yourself, documented and would you provide more justification if you were performing justified?

this analysis?

If yes, the rationale is likely incomplete.

8 Are Engineering Ensure the justification for the engineering judgmentJudgments compatible supports the way the plant is currently or will be operatedwith the way the plant is post change and is not in conflict with any designoperated and with the parameters.

If the Analysis purpose is to establish a newlicensing basis? licensing basis, then this question can be answered yes, ifthe judgment supports that new basis.9 Do the results and Why was the analysis being performed?

Does the stated El 0conclusions satisfy the purpose match the expectation from Exelon on the proposedpurpose and objective of application of the results?

If yes, then the analysis meetsthe Design Analysis?

the needs of the contract.

10 Are the results and Make sure that the results support the UFSAR defined Z E Econclusions compatible system design and operating conditions, or they support awith the way the plant is proposed change to those conditions.

If the analysisoperated and with the supports a change, are all of the other changing documents licensing basis? included on the cover sheet as impacted documents?

11 Have any limitations on Does the analysis support a temporary condition or E El Elthe use of the results procedure change? Make sure that any other documents been identified and needing to be updated are included and clearly delineated intransmitted to the the design analysis.

Make sure that the cover sheetappropriate includes the other documents where the results of thisorganizations?

analysis provide the input.12 Have margin impacts Make sure that the impacts to margin are clearly shown El Elbeen identified and within the body of the analysis.

If the analysis results indocumented reduced margins ensure that this has been appropriately appropriately for any dispositioned in the EC being used to issue the analysis.

negative impacts(Reference ER-AA-2007)?13 Does the Design Are there sufficient documents included to support the , ElAnalysis include the sources of input, and other reference material that is notapplicable design basis readily retrievable in Exelon controlled Documents?

documentation?

14 Have all affected design Determine if sufficient searches have been performed to El 0analyses been identify any related analyses that need to be revised alongdocumented on the with the base analysis.

It may be necessary to performAffected Documents List some basic searches to validate this.(ADL) for the associated Configuration Change?15 Do the sources of inputs Compare any referenced codes and standards to the currentand analysis design basis and ensure that any differences are reconciled.

methodology used meet If the input sources or analysis methodology are based oncommitted technical and an out-of-date methodology or code, additional reconciliation regulatory may be required if the site has since committed to a morerequirements?

recent code CC-AA-1 03-1003Revision 9Page 9 of 11ATTACHMENT 2Owner's Acceptance Review Checklist for External Design AnalysesPage IcDesign Analysis No.: L-002457Rev: 8No Question Instructions and Guidance Yes/No / N/A16 Have vendor supporting Based on the risk assessment performed during the pre-jobtechnical documents brief for the analysis (per HU-AA-1212),

ensure thatand references sufficient reviews of any supporting documents not provided(including GE DRFs) with the final analysis are performed.

been reviewed whennecessary?

17 Do operational limits Ensure the Tech Specs, Operating Procedures, etc. containsupport assumptions operational limits that support the analysis assumptions and Iand inputs? inputs.Create an SFMS entry as required by CC-AA-4008.

SFMS Number: i11 I2-NOTE 1: LSCS IS CURRENTLY COMMITTED TO REV. 1 OF REGULATORY GUIDE (RG) 1.27 PER UFSAR REV. 19,APPENDIX B. PER LAR RAI DATED JUNE 27, 2013, THE NRC DEEMED USE OF REV. 2 TO RG 1.27 ASESSENTIAL.

ý, 1, e -P-ý zEXELON REVIEWER: 'Ds1"" CA?-. 3DAE 10_4DATE:U U ICALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 2CALCULATION TABLE OF CONTENTSSECTION:

PAGE NO. [SUB-PAGE NO.COVER PAGE IOAR CHECKLIST la-IcTABLE OF CONTENTS 21.0 PURPOSE / OBJECTIVE 42.0 METHODOLOGY AND ACCEPTANCE CRITERIA 82.4 IDENTIFICATION OF COMPUTER PROGRAMS 163.0 ASSUMPTIONS

/ ENGINEERING JUDGEMENTS 174.0 DESIGN INPUTS 2

05.0 REFERENCES

226.0 NUMERIC ANALYSIS 247.0 RESULTS AND CONCLUSIONS 28(Page 59 -FINAL PAGE of Main Body)ATTACHMENTS PAGESAttachment A -UHSAVG Files Al -A22Attachment B -LAKET-PC Output BI -B358Attachment C -EXCEL Formulas Cl -C16Attachment D -Attached References DI -D12Attachment E -UHS Historical Operability El -E57Attachment F -LAKET-PC Plot Data F1 -F31Attachment G -LAKET-PC Analysis with Revised Decay Heat G 1 -G72Ratios and Increased Initial Lake Temperature Attachment H -LAKET-PC Analysis with Increased Plant Inlet HI -H344Temperature Requirement Attachment I -LAKET-PC Analysis for MUR PU and EPU 11-122PROJECT NO. 11333-297 I CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 3 1Attachment J -UHS Flow Path AnalysisAttachment K -Preparation of Hourly Meteorological DataAttachment L -Plant Temperature RiseAttachment M -Weather File CreationAttachment N -LAKET Validation Attachment 0 -LAKET-PC Analysis for Rev. 2 of Reg. Guide 1.27Attachment P -Plant Temperature Rise for Rev. 8J 1-J40K1-K6L1-L58M1-MI7N 1 -N2001-042PI-P58I.I PROJECT NO. 11333-297-CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 41.0 PURPOSE/OBJECTIVE The purpose of this calculation is to analyze the performance of the LaSalle County Station UltimateHeat Sink (UHS). The calculation determines the design basis UHS performance for 30 days following an accident.

The lake dike is assumed to have failed, Unit 1 is postulated to undergo a loss of coolantaccident (LOCA) with loss of off-site power (LOOP), while Unit 2 undergoes normal shutdown.

Worst-case weather conditions apply and no makeup water is credited.

The S&L LAKET-PC computer program was utilized to determine the combined impact of power uprateand allowable sediment accumulation in the UHS. It was also used to perform analysis of maximumallowable initial UHS temperature to meet required UHS outlet temperatures.

1.1 Historical AnalysesThis calculation has undergone a number of revisions to address various issues as they have arisen.Certain information from previous revisions has been retained for information or convenience.

Some ofthis information is historical but no longer represents design information.

The assembly of the calculation writeup is as follows:" Main Body -The main body of the calculation was essentially re-written and formatted in Rev. 5issue. The main body of Rev. 5 is revised in Rev. 6 to add new cases for 12" sediment level. ForRev. 7, the main body is revised to include new cases for extended power uprate (EPU) at amaximum plant intake temperature of 104'F and 1077F and the latest weather data. In Rev. 8, themain body is revised to incorporate new analysis for a more realistic heat load rejected to the UHSand Rev. 2 of Reg. Guide 1.27." Attachment A -This attachment provides results of computer analysis of the approximately 50 yearsof weather data used in the analysis.

The computer program UHS-AVG is used to select limitingweather periods for peak lake temperature and maximum evaporation.

The method of selecting thelimiting data and actual data is common to all revisions of the calculation up to Rev. 6. Selection ofweather data for Rev. 7 is documented in Attachment M. Selection of weather data for Rev. 8 isdocumented in Attachment 0." Attachment B -This attachment provides LAKET analysis results for the Rev. 3 issue of thecalculation.

This analysis supports limiting UHS temperatures of I 00°F." Attachment C -This attachment provides Excel spreadsheets and formulas used in computing (a)UHS area and volumes, and (b) CSCS temperature rise across the plant for the Rev. 3 calculation.

The CSCS temperature rise across the plant is revised in Rev. 7 and documented in Attachment L.The CSCS temperature rise across the plant is further revised in Rev. 8 and documented inAttachment P." Attachment D -This attachment provides attached references.

" Attachment E -This attachment provides an operability evaluation performed as a part of the Rev. 2calculation.

" Attachment F -This attachment provides LAKET plot data used in Rev. 3." Attachment G -This attachment provides LAKET analysis of Rev. 4. This analysis supports limitingUHS temperature of 102 'F.PROJECT NO. 11333-297 CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 5" Attachment H -This attachment provides the LAKET analysis of Rev. 5. This analysis supportslimiting UHS temperatures of 104 'F. Attachment H is revised in Rev. 6 to support 3 additional casesfor 12" sediment level." Attachment I -This attachment provides the LAKET analysis of Rev. 7. This analysis supportslimiting UHS temperatures of 107'F at Measurement Uncertainty Recapture Power Uprate (MURPU) (3559 MW,) and EPU (4067 MW,) using Rev. 1 of Reg. Guide 1.27. Please note that the EPUcases do not represent current design basis since EPU was cancelled.

" Attachment J -This attachment is added in Rev. 7 to document the determination of the effective areaand effective volume of the UHS. Rev. 8 includes additional information.

" Attachment K -This attachment is added in Rev. 7 to document the preparation of a new set ofweather data using data from LaSalle Station and Peoria, IL from 1/1/1995 to 9/30/2010.

" Attachment L -This attachment is added in Rev. 7 to document calculation of the plant temperature rise at MUR PU and EPU power levels. Please note that the EPU cases do not represent currentdesign basis since EPU was cancelled.

" Attachment M -This attachment is added in Rev. 7 to document creation of the worst weather andworst net evaporation LAKET weather files." Attachment N -This attachment is added in Rev. 7 to document validation of the LAKET computerprogram through comparison to NUREG-0693.

In Rev. 8, analysis of the UHS stratification is addedto this attachment.

" Attachment 0 -This attachment provides the LAKET analysis of Rev. 8. This analysis incorporates more realistic heat loads rejected to the UHS as developed in Rev. 4 of L-002453

[Ref. 5.8d] andsupports limiting UHS temperatures of 107'F at MUR PU (3559 MW,) using Rev. 2 of Regulatory Guide 1.27." Attachment P -This attachment is added in Rev. 8 to document calculation of the plant temperature rise at MUR PU (3559 MW,) power levels using the more realistic heat loads developed in Rev. 4 ofL-002453

[Ref. 5.8d].Most of the information in these appendices represents historical analysis and no longer serves as thedesign basis. However, some information, such as the geometry for the UHS (area and volume versussiltation) is still retained as design input for the current analysis.

1.2 Design Analysis for 102'F Inlet Temperature LimitIn the Rev. 4 calculation, two issues were addressed:

" The allowable maximum plant inlet temperature was raised to 102'F and maximum initial UHStemperatures were determined based on the new limit." Core decay heat was increased to include contributions for additional actinides and activation products as documented in a separate calculation

[Ref. 5.8].The supporting analysis for these changes is documented in Appendix G.I PROJECT NO. 11333-297

-

I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 6 111.3 Design Analysis for 1047F Inlet Temperature LimitThe Rev. 5 calculation addresses:

" An increase in the allowable maximum plant inlet temperature to 104'F" Attachment H documents this analysis and determines the maximum initial UHS temperature for aplant inlet temperature limit of 104'F. Several different test case scenarios were evaluated and themaximum initial UHS temperature allowed was determined for each. In addition, Appendix H alsodocuments the following:

4 The Attachment H analyses use a new version of the LAKET software, although the underlying algorithms are unchanged.

Test cases were run with the new code to confirm matching resultsfrom the previous version.4 In addition, a new evaporation case was run with the new limiting initial temperature to confirmthere is adequate inventory.

+ Finally, it was confirmed and documented that the previous design basis for CSCS heat loadincludes a conservative modeling of pump heat and single failure assumptions.

The Rev. 6 calculation addresses:

" Incorporation of minor Rev. 5A into the main body of the report. In Rev 5A, the UHS requirement for use of fire water during accident and transient conditions was revised from 132,000 gals to440,400 gals. This was incorporated into Assumption 3.7, UHS Inventory for Fire-Fighting.

" The addition of three (3) new cases to evaluate the maxinmun initial lake temperature andevaporation based on 12 inches of sedimentation to the cases presented in Rev. 5 based on existingmaximum plant inlet temperature of 104'F. The main body and Attachment H are revised to supportthe analyses of these new cases.1.4 Design Analysis for 1041F and 107'F Inlet Temperature Limit Using Latest Weather Data up toSeptember 2010The Rev. 7 calculation addresses:

" An allowable maximum plant inlet temperature of 104'F and an increase in the allowable maximumplant inlet temperature to 107'F for both MUR PU and EPU." Addition of new weather data from LaSalle Station from January 1, 1995 to September 30, 2010.* New determination of effective area and effective volume as a percentage of the total UHS area andtotal UHS volume.* Incorporation of the UHS requirement for use of fire water during accident and transient conditions of 440,400 gallons.

InI previous revisions, this had been deemed insignificant in an assumption.

Forthis revision the assumption has been removed, and the 440,400 gallons is removed immediately following the postulated accident.

" Increased core decay heat as a result of EPU.* Incorporation of spent fuel pool makeup flow from the UHS (600 gpm).I PROJECT NO. 11333-297 1I I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 7 111.5 Design Analysis for 107'F Inlet Temperature using Revised Rejected Heat Load to the UHSThe Rev. 8 calculation addresses:

• A revised plant temperature rise calculation (see Attachment P) based on more realistic heat loadsrejected to the UHS as developed in L-002453

[Ref. 5.8d]." A revised methodology for selection of weather data based on Rev. 2 of Regulatory Guide 1.27 [Ref.5.2]." Removal of spent fuel pool makeup flow from the UHS (600 gpm).1.6 Classification, etc.This calculation is safety related.This mechanical calculation provides an unsteady thermal model that is used to determine the capacity ofthe LaSalle Station ultimate heat sink (UHS), a safety related structure.

Description Code: M03 (mechanical system capacity calculation)

System Code: ZZI PROJECT NO. 11333-297 11 CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 82.0 METHODOLOGY AND ACCEPTANCE CRITERIAThis calculation detenrmines the maximum allowable initial lake temperature that would support the 107TFCSCS maximum intake temperature limit for response to a postulated LOCA concurrent with the failureof the lake dike. The maximum allowable lake temperature is determined for average sedimentaccumulations of 0, 6, 12, and 18 inches.(Other analyses supporting lower CSCS maximum intake temperatures are also documented as described inSection 1).2.1 Methodology The method of analysis used in this calculation conforms to the position described in U.S. Atomic EnergyCommission Regulatory Guide 1.27, "Ultimate Heat Sink for Nuclear Power Plants",

Revision 1 [Ref. 5.2].The LaSalle Station is licensed to this version of the Reg. Guide. The USNRC has also issued a revision tothis Reg. Guide (Rev. 2) to address Ultimate Heat Sinks with different configurations than the baseconfiguration inherently assumed in the approach to modeling weather data per the Rev. I guide. Inparticular, the Rev. 2 guide addresses UHS designs with larger inventories with a transit time on the orderof five days. The LaSalle UHS has a transit time of approximately one to two days. Analysis to Rev. 2 ofthe Reg. Guide [Ref. 5.2] was added in Rev. 5 and Rev. 6 of this calculation to conservatively supplement the design analysis per Rev. 1. Rev. 7 analysis only considers the methodology given in Rev. 1 of the Reg.Guide [Ref. 5.2]. Rev. 8 analysis uses the methodology of Rev. 2 of the Reg. Guide [Ref. 5.2] byconsidering the worst weather periods corresponding to the transit time of the UHS when selecting weatherdata.Using this guidance, the worst synthetic weather period is assembled and used to analyze the transient temperature performance of the UHS using the LAKET computer program.

For the selected time periods,the weather data is comprised of dry bulb temperature,

humidity, wind speed, cloud cover, rainfall, andsolar radiation variables that give rise to maximum water temperatures.

Similarly, the consecutive 30-daymaximum evaporation weather period is also evaluated to determine the impact of water inventory loss onUHS performance.

2.1.1 Selection of Weather Data following R.G. 1.27, Rev. I (Peak Temperature)

Up to Revision 6 -R.G. 1.27, Rev. 1 guidance requires synthesis of the worst 31 day (worst 1-day + worst30 consecutive days) weather period. The UHSAVG program [Ref. 5.7] is used to determine the worst Iday and 30 day temperature periods.

The weather data file contains weather station data from Peoria, ILand Springfield, IL for the dates between July 4, 1948 through June 30, 1996. The binary weather data file(pslsw-2.bin) for this historical worst weather period is documented in Appendix A of calculation L-00158 1, Rev. 0 [Ref. 5.4]. From the new, expanded weather data set, the worst single day is now July 15 to16, 1995 while the worst thirty day period is from July 10, 1983 to August 9, 1983.Revision 7 -The methodology used to determine the worst I day and 30 day temperature periods isdocumented in Attachment M. The worst weather is determined from two different weather files. The firstweather data file considered is the one used in previous revisions of this calculation including weatherstation data from Peoria, IL and Springfield, IL for the dates between July 4, 1948 through June 30, 1996.The second weather data file contains weather station data from LaSalle Station and Peoria, IL fromJanuary 1, 1995 to September 30, 2010. The worst single day is determined to be July 24, 2001 7:00AM toPROJECT NO. 11333-297 I CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 9 1July 25, 2001 6:00AM while the worst thirty day period is from July 21, 1995 4:00PM to August 20, 19953:00PM.Revision 8 -Weather data selection following R.G. 1.27, Rev. 1 is not considered in this revision.

2.1.2 Selection of Weather Data following R.G. 1.27, Rev. 2 (Peak Temperature)

Up to Revision 7 -Selection of weather data following Reg. Guide (R.G.) 1.27, Rev. 2 is used for Rev. 5and Rev. 6 of this calc. New selection of weather data for this Reg. Guide was not done for Rev. 7. TheUHSAVG program [Ref. 5.71 is used to determine the worst 5 consecutive days, worst 1 day, and worst 30consecutive days temperature period. The weather data file contains weather station data from Peoria, ILand Springfield, IL for the dates between July 4, 1948 through June 30, 1996. The worst 36-day period isdocumented in Attachment A of this calculation.

The worst five day period is from July 12, 1995 to July17, 1995. The worst one day and thirty day periods are the same as identified in Section 2.1. 1.Revision 8 -R.G. 1.27 Rev. 2 requires weather data selected based on the worst weather over the UHStransit time, the worst one day weather, and the worst 30 day weather.

Alternatively, the worst consecutive day weather over a time period equal to the UHS transit time plus one day plus 30 days may be considered.

This revision considers both alternatives.

The selection of weather data from LaSalle Station and Peoria, ILfrom January 1, 1995 to September 30, 2010 based on the R.G. 1.27 Rev 2 methodology is documented inSection 06.4 of Attachment 0.2.1.3 Selection of Weather Data following R.G. 1.27, Rev. 1 (Peak Evaporation)

Guidance for selecting weather data for use in computing peak UHS evaporation over a thirty day period isbased on R.G. 1.27, Rev. 1, although requirements from Rev. 2 are virtually the same. The limitingevaporation period is from June 18, 1954 to July 18, 1954. Additional information is provided inAttachment A of this calculation.

Following the addition of the new weather data (LaSalle Station and Peoria, IL weather data from 1/1/1995to 9/30/2010) it was confirmed that the limiting evaporation period from June 18, 1954 to July 18, 1954remains the limiting evaporation period. See Attachment M for documentation of this analysis.

2.1.4 Plant Heat Load to the UHSThe heat load to the UHS is documented in a separate calculation

[Ref. 5.8]. This data is interpolated to fitthe one-hour (three-hour up to Rev. 6) time increments required by LAKET. The CSCS temperature risedata for each one-hour (three-hour up to Rev. 6) increment is based on this heat load and computed andlisted in Attachment P of this calculation.

Attachment L calculated the CSCS temperature rise for EPUbased on previous revision of the plant heat load calculation, L-002453

[Ref. 5.8]. It is not used in Rev. 8,but is kept for historical purposes.

2.1.5 UHS Surface and Volume DataThe approximate surface area and volume of the UHS for different postulated sediment accumulations isdetermined using the methodology documented in Appendix B of calculation L-001581, Rev. 0 [Ref. 5.4].The UHS surface area and volume are provided in Table 7.1. The effective area and effective volume of theUHS are determined in Attachment J.I PROJECT NO. 11333-297 I

I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 10I CACLTO O -047RVSO O AEN.12.1.6 CSCS Temperature RiseThe temperature rise through the plant is used in LAKET-PC to compute the rise in water temperature caused by the heat rejected to the UHS during the postulated accident.

It is determined by the following:

AT = Q / (cp x m)where:AT = plant temperature rise, ['F]Q = heat rejection to the UHS, [Btu!hr]cp = specific heat of water, [Btu/(lb-°F)]

m = mass flow rate of water, [lb/hr]The mass flow rate is determined from the CSCS volumetric flow rate in cfs:m = 86.0 ft3/sec x 3600 sec/hr x 62.02 lb/ft3 = 19,201,392 lbm/hr (Up to Rev. 6)in = 86.0 ft3/sec x 3600 sec/hr x 62.00 lb/ft3 = 19,195,200 Ibm/hr (Rev. 7 and 8)m = 65.3 ft3/sec x 3600 sec/hr x 62.00 lb/ft3 = 14,574,960 Ibm/hr (Rev. 8)The time increment for much of the weather data is three hours (one hour for Revisions 7 and 8). Since thetemperature of the UHS does not change significantly over a three hour (or one hour) time period, it issufficiently accurate to apply this time increment to calculate the average temperature rise for each timestep.2.1.7 UHS Analysis for a 102'F Plant Inlet Temperature LimitAttachment G evaluates the ability of the UHS to maintain the plant inlet temperature below 102'F for theworst 31-day transient and worst 36-day transient analyses.

The following cases are run as part ofAttachment G:Revision 4 (see Attachment G)I ICaseStart WeatherTime DataSedimentLevel (in.)Methodology Design Criteria00 10 0 Re Gud 1.27, Rev. Assume Initial UHS Temp = 100°F;09:0 1/3 0 eg. uide1.2, Re. 1 Verify Plant Inlet Temp!< 102.0°F-i Assume Initial UHS Temp = 100°F;2 09:00 5/1/30 6 Reg. Guide 1.27. Rev. 2 Verify Plant Inlet Temp < 102.0°F3GAssume Initial UHS Temp = 100'F;3 09:00 1/30 18 Reg. Guide 1.27, Rev. 1 Verify Plant Inlet Temp < 102.00F406:00 11/3018Reg. Guide 1.27, Rev. 1Assume Initial UHS Temp = 100'F;Verify Plant Inlet Temp < 102.0°F2.1.8 UHS Analysis for a 104'F Plant Inlet Temperature LimitAttachment H evaluates the ability of the UHS to maintain the plant inlet temperature below 1047F for theworst 31-day transient, worst 36-day transient, and also documents the worst 30-day evaporation periodanalyses.

There are total 9 cases in Rev. 5 and 3 cases in Rev. 6. All 12 cases are included as part ofI ~PROJECT NO. 11333-297 1

I CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 11I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 11 11Attachment H and summarized below:Revision 5 (see Attachment H)Case Start Weather DataTimela 09:00 1/30SedimentLevel (in.)0618Methodology 2a3a09:00 1/3009:00 I 1/30Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Design CriteriaMaximize Initial UHS Temp;Requires Plant Inlet Temp <__ 104.0°FMaximize Initial UHS Temp;Requires Plant Inlet Temp < 104.0°FMaximize Initial UHS Temp;Requires Plant Inlet Temp < 104.0°Flb 0:00I 5//300 Rg. Gide1.27 Re. 2Maximize Initial UHS Temp;lb 0:00 eg. uid 1.2. Re. 2Requires Plant Inlet Temp!< 104.0°FMaximize Initial UHS Temp;lb 09:00 5/1/30 0 Reg. Guide 1.27. Rev. 2 Requires Plant Inlet Temp - 104.00F2b 09:00 5/1/30 6 Reg. Guide 1.27. Rev. 2 Maximize Initial UHS Temp;g u e Requires Plant Inlet Temp _ 104.0°F3b 090 [ 1 2 e.2Maximize Initial UHS Temp;5/1 -. Rg. GuideRequires Plant Inlet Temp<104.0°F icIc2c3c09:00 Worst 30-dayEvaporation 09:00 Worst 30-dayEvaporation 09:00 Worst 30-dayEvaporation 06Reg. Guide 1.27. Rev. 1Reg. Guide 1.27. Rev. 1Reg. Guide 1.27. Rev. 1Use limiting initial temperature fromCase la or lbUse limiting initial temperature fromCase 2a or 2bUse limiting initial temperature fromCase 3a or 3b18LAKET-PC

[Ref. 5.ld] and UHSAVG [Ref. 5.7] are filed and documented in the Sargent & LundyComputer Software Library.

UHS model runs were performed on PC Nos. 5121 and 5407 via networkserver SNLI for Rev. 5.Revision 6 -Revision 6 of this calculation utilizes the same methodology Rev. 5 and is presented inAttachment H. Additional cases 4a, 4b and 4c were run to find the maximum initial UHS temperature for asediment level of 12 inches.Revision 6 (see Attachment H)Case Start Weather DataTime4a 09:00 1/30SedimentLevel (in.)12Methodology Design CriteriaMaximize Initial UHS Temp;Requires Plant Inlet Temp < 104.0°Fg GMaximize Initial UHS Temp;Reg. Guide 1.27. Rev. 2 Requires Plant Inlet Temp < 104.0°FReg. Guide 1.27. Rev. 1 Use limiting initial temperature from.iCase 4a or 4b.4b09:005/1/30124c09:00Worst 30-dayEvaporation 12LAKET-PC

[Ref. 5.1d] is filed and documented in the Sargent & Lundy Computer Software Library.

UHSmodel runs were performed on PC No. ZL4578 for Rev. 6.1 PROJECT NO. 11333-297 I CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 12Ii CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 122 112.1.9 UHS Analysis for a 104'F and 107'F Plant Inlet Temperature Limit at MUR PU and EPUAttachment I evaluates the ability of the UHS to maintain the plant inlet temperature below 104'F or 107'Ffor the worst 3 1-day transient and also documents the worst 30-day evaporation period analyses.

The casesare run for both MUR PU and EPU power levels, and all cases use the Reg. Guide 1.27, Rev. Imethodology.

All cases are included as part of Attachment I and sunmmarized below:Revision 7 (see Attachment I)CaseStartTimeWeather DataPower Level Sediment i .(MWt) Level (in.)Maximize Initial UHS Temp;4067 (EPU) 0 Requires Plant Inlet Temp < 107.0°Fla6:001/304 0 Maximize Initial UHS Temp;la-104F 6:00 1/30 4067 (EPU) 0 Requires Plant Inlet Temp < 104.0°F-FMaximize Initial UHS Temp;laMUR 6:00 1/30 3559 (MUR PU) 0 Requires Plant Inlet Temp < 107.00FMaximize Initial UHS Temp;laMUR_104F 6:00 1/30 3559 (MUR PU) 0 Maxiize InleH Temp;Requires Plant Inlet Temp 104.00FMaximize Initial UHS Temp;2a 6:00 1/30 4067 (EPU) 6 Requires Plant Inlet Temp _ 107.0°FS 64Maximize Initial UHS Temp;1 6:00 1/30 4067 (EPU) 62a_104 :Requires Plant Inlet Temp:_ 104.0 F, I .Maximize Initial UHS Temp:2aMUR t_6:00 1/30 3559 (MUR PU) 6 Requires Plant Inlet Temp_< 107.0°F6Maximize Initial UHS Temp;2a_MUR_104F 6U Requires Plant Inlet Temp < 104.00F3a_12am 0:00 1/30 4067 (EPU) 18 Maximize Initial UHS Temp;MaximizeeIiilUH ep3a0 1/30 4067 (EPU) 18 Requires Plant Inlet Temp _< 107.01FMaximize Initial UHS Temp;3a_12am 6:0 13407(P)8 3a_3am 36:00 1/30 4067 (EPU) Requires Plant Inlet Temp < 107.0OF3a9am 9:00 1/30 4067 (EPU) 18 Maximize Initial UHS Temp;3a_ am I ,o i Requires Plant Inlet Temp < 107.0°F3a_12pm12:001/304067 (EPU) 184067 (EPU) 18Maximize Initial UHS Temp;Requires Plant Inlet Temp _ 107.0°F3a_3pm15:001/303a_6pm3a_9pm3a_104F18:0021:006:001/30 4067 (EPU) 181/30 4067 (EPU) 181/30 4067 (EPU) 18Maximize Initial UHS Temp;Requires Plant Inlet Temp < 107.0°FMaximize Initial UHS Temp;Requires Plant Inlet Temp < 107.0°FMaximize Initial UHS Temp;Requires Plant Inlet Temp < 107.0°FMaximize Initial UHS Temp;Requires Plant Inlet Temp _ 104.0°FI PROJECT NO. 11333-297

-

I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 13 11I CACLTO O -047RVSO O AEN.1ICase3aMURStartTime6:00Weather Data1/30Power Level Sediment Design Criteria(MWt) Level (in.)5 1 Maximize Initial UHS Temp;Requires Plant Inlet Temp _ 107.0°FMaximize Initial UHS Temp;3559 (MUR PU) 18Requires Plant Inlet Temp _< 104.0°F6:00 1/303aMUR_104F 4a6:001/304a_104F4aMUR6:006:001/301/304067 (EPU) 124067 (EPU) 123559 (MUR PU) 12Maximize Initial UHS Temp;Requires Plant Inlet Temp < 107.0°FMaximize Initial UHS Temp;Requires Plant Inlet Temp < 104.0°FMaximize Initial UHS Temp;Requires Plant Inlet Temp < 107.0°F+4aMUR_104F 6:000:001c2c 0:003c 0:001/30Worst 30-dayEvaporation Worst 30-dayEvaporation Worst 30-dayEvaporation 3559 (MUR PU)4067 (EPU) 0 Use limiting LAKET input initialtemperature from Case la6 6 Use limiting LAKET input initialtemperature from Case 2a1 Use limiting LAKET input initial4067 (EPU) 18 temperature from Case 3a12Maximize Initial UHS Temp;Requires Plant Inlet Temp < 104.0°F4c 0:001c_104F 0:00Ic_MUR 0:00lc_MUR_104F 0:00Worst 30-dayEvaporation Worst 30-dayEvaporation Worst 30-dayEvaporation Worst 30-dayEvaporation 4067 (EPU) 12 Use limiting LAKET input initialtemperature from Case 4a4067 (EPU) 0 Use limiting LAKET input initialtemperature from Case Ia_104FUse limiting LAKET input initial3559 (MUR PU) 0 temperature from Case laMUR3559 (Use limiting LAKET input initial9(MUR PU) temperature from Case la_MUR_104F 2.1.10 UHS Analysis for a 107'F Plant Inlet Temperature Limit at MUR PUAttachment 0 evaluates the ability of the UHS to maintain the plant inlet temperature below 107'F for theworst 33 consecutive day transient and also documents the worst 30-day evaporation period analyses.

Thecases are run for MUR PU power levels, and all cases use the Reg. Guide 1.27, Rev. 2 methodology.

Allcases are included as part of Attachment 0 and summarized below:.Revision 8 (see Attachment 0)CaseCase la_12AMWeather Data33Power Level(MWt)3559 (MUR PU)SedimentLevel (in.)0Design CriteriaInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.00FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp _ 107.00FCase 1 a_3AM333559 (MUR PU)0I PROJECT NO. 11333-297 1

I CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 14CaseCase la_6AMCase 1a_9AMCase la_12PMIPower Level SedimentJeather Data (MWt) Level (in) Design Criteria33 3559 (MUR PUI) 0 Initial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.00FInitial UHS Temp equal to TS Limit;(MUR PU) Requires Plant Inlet Temp _ 107.0°F3 3Initial UHS Temp equal to TS Limit;33 3559 (MURPU) 0 Requires Plant Inlet Temp < 107.0°FCase la_3PM33 3559 (MUR PU)33 3559 (MUR PU)0Case la_6PMCase la_9PMInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.01FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp _ 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FCase 2a_12AMCase 2a_3AMCase 2a_6ANCase 2a_9AM 33Case 2a_12PM 33Initial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.00FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp 5 107.00FCase 2a_3PMInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.01FCase 2a_6PMCase 2a_9PMInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.00FCase 3a_12AMInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0*FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FCase 3a_3AMCase 3a_6AMCase 3aInitial UHS Temp equal to TS Limit;18 ReursPatIltTm10.F Requires Plant Inlet Temp _ 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°F18 Initial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°F18 Initial UIHS Temp equal to TS Limit;Requires Plant Inlet Temp:< 107.0°FCase 3a_12PMCase 3a_3PM33 3559 (MUR PU)I PROJECT NO. 11333-297 I

I CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 15 1Case Weather DataCase 3a_6PM 33Case 3a_9PM 33Case 4a_12AM 33Power Level Sediment(MWt) Level (in.)3559 (MUR PU) 183559 (MUR PU) 183559 (MUR PU) 12Design CriteriaInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.01FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.O0FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FCase 4a_3AM 33Case 4a_6AM 333559 (MUR PU)3559 (MUR PU)1212Case 4a_9AM 33Case 4a_12PM 333559 (MUR PU)123559 (MUR PU)Case 4a_3PM 33 3559 (MUR PU)Case 4a_6PM 33 3559 (MUR PU)Case 4a_9PM 33 3559 (MUR PU)121212Initial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp _ 107.0°FInitial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°F12Initial UHS Temp equal to TS Limit;Requires Plant Inlet Temp < 107.0°F2.2 Acceptance CriteriaThis calculation assumes an initial UHS temperature and demonstrates that peak temperature acceptance criteria 2.2.1 and 2.2.2 are met. The maximum initial UHS temperature is the maximum allowable laketemperature during normal operation.

2.2.1 Acceptance Criterion

1. 1 -Peak Temperature

-For the worst Reg. Guide 1.27, Rev. 1 composite 31-day andRev. 2 composite 36-day weather periods (up to Rev. 6), the maximum allowable plant water intaketemperature from the UHS is variously 100°F (Rev. 3), 102'F (Rev. 4), 104'F (Rev. 5 through Rev. 7), or107'F (Rev. 7, 31-day weather period only).For Rev. 8, the peak temperature of the UHS shall not exceed the maximum allowable UHS temperature of1070F.2.2.2 Acceptance Criterion

1. 2 -UHS Inventory

-There are no specific acceptance criteria for maximum UHSlake drawdown.

However, for the worst 30-day evaporation period, the maximum lake drawdown isdetennined for input to calculation L-001355

[Ref. 5.13].I PROJECT NO. 11333-297

-I I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 16 112.3 Limitations The results of this calculation are limited by the accuracy of the LAKET-PC program and models inherentin the code (see Ref. 5.14, for a comparison of the predictions of the LAKET program against lake intaketemperatures observed in August 1989 at the LaSalle Station).

In addition, see Attachment N for additional validation of LAKET.2.4 Identification of Computer ProgramsAn updated version of LAKET-PC

[Ref. 5.1c] was used when performing calculations for Revision 4 (seeAttachment G). Unlike its previous

version, the weather files are in text fonrat instead of binary. It wastherefore necessary to use the Bin to Txt application included in LAKET-PC program number 03.7.292-2.0

[Ref. 5.1 ] to convert previously used binary weather files into text files.After the Rev. 4 issue of this calculation, LAKET-PC

[Ref. 5. l d] was updated ffirther to improve flexibility in modeling.

This update did not change the basic modeling algorithms as demonstrated by re-running theAttachment G analyses.

This latest version was used in the Rev. 5, Rev. 6, Rev. 7, and Rev. 8 of thiscalculation.

With each update that was made, verification calculations with previous calculations were made to ensurethe newer, updated version of the software obtained results that matched its predecessor.

For verification

purposes, Case 0009 from the main body was recalculated prior to beginning Revision 4 calculations.

Results were within 0.03'F of each other. Several previous cases were recalculated prior to conducting tests for Revision 5 for verification of results for the additional update. Since Revisions 6 through 8 utilizethe same version of LAKET as Revision 5, no formal verification was necessary.

SPROJECT NO. 11333-297 CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 17]3.0 ASSUMPTIONS

/ ENGINEERING JUDGEMENTS 3.1 Makeup, Blowdown, Runoff, etc. -Consistent with previous calculations

[Ref. 5.4], it is assumed that thereis no makeup, blowdown, runoff, or dam spill in the UHS.3.2 Initial Natural Lake Temperature

-Up to Revision 6, the initial natural UHS temperature is assumed to be4.5'F lower than the initial forced UHS temperature.

Higher initial natural temperatures produce higherpeak UHS temperatures, if the peak temperature occurs in the first few days of the UHS transient.

Aprevious calculation, L-002456

[Ref. 5.6a], analyzed the cooling lake for two units in full power operation (post-power uprate configuration) during the worst day and the worst five days in the weather history (July15, 1995 and July 12 -17, 1995). It found that the minimum difference between forced and natural laketemperatures during this peak lake temperature period is 4.5°F. The LOCA transient begins with a coolinglake dike failure and both units operating at full power. Although L-002456

[Ref. 5.6b] was revised forMUR PU and found an increase in maximum lake temperature by approximately 0.1°F, the minimumdifference between forced and natural lake temperatures during the peak lake period of 4.5°F remainsbounding.

Therefore, this assumption remains conservative.

Revision 7 -The initial natural UHS temperature is conservatively assumed to be equal to the initial forcedUHS temperature.

Revision 8 -The initial natural temperature is set to the natural temperature of the UHS at the initial time ofeach case. This is determined from the results of the worst weather determination cases'WorstWeather_1 10.dat' and 'WorstWeather_120.dat' (see Attachment 0).3.3 Sensible Heat Load from RCS -Up to Revision 6, it is conservatively assumed that all of the sensible heatfrom the reactor and the primary system is dissipated to the UHS within six hours. One-half of the heat isassumed to be rejected in the first 3-hour time step and the other half is rejected in the second 3-hour timestep. This is based on the assumption that the temperature within the reactor will be at 100'F within 6hours. Peak calculated temperatures are not sensitive to the timing of the introduction of sensible heatwithin the first two time steps of the analysis.

Note that the minimum time step for LAKET is three hourswhich is short relative to the transit time of the lake given by the UHS volume divided by the volumetric flow rate of CSCS flows or:transit = V / Q = (341.4 acre-ft)(

43,560 ft2/acre) / (86.0 cfs)tlrait = 172,923 sec = -48 hoursWhere the UHS volume is taken from Table 7.3 and Q is taken from Assumption 3.5. Thus the time step(3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />) is small relative to the transit time (48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />).Revision 7 -It is still assumed that all of the sensible heat from the reactor and the primary system isdissipated to the UHS within six hours. However, since LAKET is run using one hour time steps, one-sixth of the heat is assumed to be rejected in each of the first six hours. Also, with the new effective volumefactor calculated in Attachment J and lake volume following removal of water for fire-fighting inAttachment I, the transit time of the UHS is changed.

The new UHS transit time is:ttransit

= Vtotai * (Effective Vol. Factor) / Q = (340.0 acre-ft)*(0.634)*(43,560 ft2/acre) / (86.0 cfs)PROJECT NO. 11333-297 CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 18Jt,ransi,

= 109,184 sec = 30.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> (for 18-in of sedimentation)

The time step (one hour) is small relative to the transit time (30.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />).Revision 8 -The dissipation of sensible heat to the UHS is considered in sections D6.1.1 and D6.2.1 of L-002453 [Ref. 5.8d]. Due to a change in the UHS flow rate the transit time has changed.

This calculation isdocumented in Section 06.3 of Attachment 0.ttr=,sit 123,063 sec = -34.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> (for 18-in of sedimentation) 3.4 UHS Surface and Volume -The effective surface area and volume are assumed to be 90% of the totalsurface area and volume. This is in accordance with Reference 5.14, which compares the predictions of theLAKET program against lake intake temperatures observed in August 1989 at the LaSalle Station.Revision 7 and 8 -An effective area percentage of 57.9% of the total UHS area and an effective volumepercentage of 63.4% of the total UHS volume are determined in Attachment J. This was determined for the18-in of sedimentation case. The use of maximum silting reduces the UHS volume, and therefore theresidence time. This reduces the effectiveness of the UHS and is thus conservative.

3.5 CSCS Flow -The total plant flow during the UHS analysis is assumed to be 38,600 gpm (86.0 cfs). Thetotal flow is based upon the cumulative flow contribution from thirteen CSCS pumps operating at designflow conditions (eight RHR-SW pumps, 4,000 gpm each; three DG pumps, two at 1300 gpin and one at2,000 gpm; and two HPCS DG pumps, 1000 gpm each) [Ref.'s 5.11, 5.12].Revision 7 -It is noted that the fuel pool emergency makeup flow rate is not included, as this flow does notreturn to the UHS (See Assumption 13.1).Revision 8 -Due to an RHR pump and two RHR service water pumps being aligned for spent fuel poolcooling services, the total plant flow is 29,300 gpm (65.3 cfs) for the first 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> following the UHS eventand is 38,600 gpm (86.0 cfs) following the first 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> [Ref. 05.11]. More detail is provided in DesignInput 04.6. Additionally, the UHS no longer provides fuel pool emergency makeup flow.3.6 Water Properties

-Up to Revision 6, the density and specific heat of water in the UHS are assumed to be62.02 lb/ft3 and I Btu/lb-°F, respectively

[Ref. 5.10]. This corresponds to an assumed average temperature of 98.5°F.Revision 7 and 8 -The density and specific heat of water in the UHS are assumed to be 62.00 lb/ft3 and0.998 Btu/lb-°F, respectively

[Ref. 5.10]. This corresponds to an assumed average temperature of I 00°F.3.7 UHS Inventory used for Fire Fighting

-As stated in minor Revision 5A, the UHS requirement for use offire water during accident and transient conditions was revised from 132,000 gals to 440,400 gals (SeeUFSAR Change Package LUCR #96. UFSAR section 9.2.6.3.a was updated by UFSAR Change PackageLUCR #96). Assumption 3.7 is adjusted to account for the new UHS requirement for fire fighting in 3.7B.A. Up to Revision 5 -The use of UHS inventory for fire fighting is insignificant.

UFSAR Section 9.2.6.3[Ref. 5.3] states that 132,000 gallons of water from the UHS must be available for fire fightingfollowing an accident.

Fire fighting could consume up to 0.41 acre-ft (132,000 gal x 0.1337 ft3/gal /43,560 ft2/acre). The volume and surface area of the UHS at its maximum drawdown of 1.5 ft (El.I PROJECT NO. 11333-297 I1 CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 19688.5 ft) are 341 acre-ft and 81.3 acres, respectively.

Thus, fire water consumption would decrease theUHS heat capacitance by only 0.1% (0.41 acre-ft/341 acre-ft) and increase the maximum UHSdrawdown by only 0.005 ft (0.41 acre-ft/81.3 acres).B. Revisions 5 and 6 -The use of UHS inventory for fire fighting is insignificant.

UFSAR Section 9.2.6.3[Ref. 5.3] states that 440,400 gallons of water from the UHS must be available for fire fightingfollowing an accident.

Fire fighting could consume up to 1.352 acre-ft (440,400 gal x 0.1337 ft3/gal /43,560 ft2/acre). The volume and surface area of the UHS at its maximum drawdown of 1.5 ft (El.688.5 ft) are 341 acre-ft and 81.3 acres, respectively.

Thus, fire water consumption would decrease theUHS heat capacitance by only 0.396% (1.352 acre-ft/341 acre-ft) and increase the maximum UHSdrawdown by only 0.0166 ft (1.352 acre-ft/81.3 acres). This is less than 0.2 inches of drawdown.

C. Revision 7 and 8 -The use of UHS inventory for fire fighting is accounted for in the LAKETevaluations.

It is assumned that all UHS inventory for fire fighting (440,400 gallons [Ref. 5.31) is usedimmediately following an accident (See Assumption 13.2 in Attachment I). This is conservative as itdecreases the volume of water in the UHS.3.8 Modeling of Precipitation

-Up to Revision 6, in the UHS analysis for power uprate no credit is taken forprecipitation.

The worst UHS temperature and evaporation periods for the updated weather history wereselected assuming there is no precipitation.

The UHS maximum temperature and maximum evaporation cases were analyzed assuming there is no precipitation.

Revision 7 and 8 -The worst UHS temperature and evaporation periods for the updated weather historywere selected with precipitation included.

Following selection of the worst periods, precipitation isconservatively

removed, and analysis of the UHS maximum temperature and maximum evaporation caseswere analyzed assuming there is no precipitation.

I PROJECT NO. 11333-297-I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 20 11I CACLTO O -047RVSO O AEN.24.0 DESIGN INPUTS4.1 UHS Geometry

-According to calculation L-001584

[Ref. 5.5], the surface area and volume profile for theUHS with no sediment accumulation can be represented as a series of fifteen, one-foot thick frustums, asfollows (volume adjustments account for segments that are not frustums):

SegmentNoElevation iBottomSurface AreaTopSurface AreaVolumeAdjustment M_____ -t) J (ft3)15 675-676 33214 676-677 2786(acres)0.00760.064(ft3)2786(acres)0.064(acre-ft) 80910.186 113 .677-678 I 8091 0.186 14,215 ___ 0.326f12 678-679 14,215 0.326 224,302 5.15 +2.27+1.66" 11 679-680 224,302 5.15 I 275,605 6.3310 680-681 275,605 6.33 353,588 8.129 681-682 353,588 8.12 423,844 9.738 682-683 423,844 9.73 526,454 12.097 683-684 526,454 12.09 642,512 14.756 684-685 642,512 I 14.75 1,293,664 29.70 -0.84*685-686 1,293,664 29.70 1,293,664--

29.70** +21.67+19.54*

4 686-687 3,368,632 77.33 3,439,517 78.963 687-688 3,439,517 78.96 3,508,668 80.55688-689 3,508,668 80.55 3,578,525 82.151689-6903,578,525 82.153,651,620 83.83* Adjustments to the frustum volumes account for the UHS bottom contour, localized hills and pockets"*Segment 5 is modeled as a cylinder with major adjustments to account for the UHS bottom contourAccording to Reference 5.5, the UHS volume for zero sediment deposition is 465 acre-ft.

The surface areaand volume profile data from Reference 5.5 are based on the latest lake survey performed in 1997.According to UFSAR Section 9.2.6 [Ref. 5.3], the UHS volume for zero sediment deposition is 460 acre-ft.The volume from 1997 lake survey data is only 1% greater than the volume cited in the UFSAR. Becauseof this and because the lake survey provides the best available volume and lake contour data, the lakesurvey data will be used in the UHS analysis.

4.2 Weather Periods31 Day Synthetic Weather Period (R.G. 1.27, Rev. 1) -The worst combined 31-day historical weatherperiod is based on weather data from July 4, 1948 through June 30, 1996 and is synthetically assembled in adata file (File Name: worstday-9am.txt) and is documented in Attachment H [see Attachument A and Ref.5.4].PROJECT NO. 11333-297 I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 21 1Revision 7 -The worst combined 31-day historical weather periods is based on weather data from July 4,1948 through June 30, 1996 used in the previous revisions and weather data from January 1, 1995 throughSeptember 30, 2010 from LaSalle Station (with unavailable data from Peoria, IL). Selection of the worstweather day and worst weather 30 days and a synthetically assembled data file of these days aredocumented in Attachment M.Revision 8 -The combined 31-day historical weather period is not used in this revision.

36 Day Synthetic Weather Period (R.G. 1.27, Rev. 2) -The worst combined 36-day historical weatherperiod is based on weather data from July 4, 1948 through June 30, 1996 and is synthetically assembled in adata file (File Name: 5-1-30days9am.txt) and is documented in Attachment H [see Attachment A and Ref.5.4].Revision 7 and 8 -The worst combined 36-day historical weather period is not used in this revision.

30 Day Weather Period (R.G. 1.27, Rev. 1) -The worst 30-day historical weather period for evaporative losses is based on weather data from the summer of 1954 as contained in a data file (File Name:30dayevap.txt) and documented in Attachment H.Revision 7 and 8 -The worst 30-day historical weather period for evaporative losses based on weather datafrom the summer of 1954 was determined to remain limiting when compared to worst 30-day weatherperiod for evaporative losses from the LaSalle Station weather data from January 1, 1995 to September 30,2010. This is documented in Attachment M.Revision 8 -Weather file creation for this revision is documented in Section 06.4 in Attachment 0.Weather files are created for several time periods including:

1) the worst 33, 39, 42, or 45 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> followedby the next consecutive 31 days at various starting times and 2) synthetic weather files of the worst 33hours, worst 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and worst 30 days at various start times.4.3 Seepage Rate0.2 cfs5500 ft4.4 CSCS Pond Length4.5 UHS Heat Load[Ref. 5.4][Ref. 5.4][Ref. 5.8][Ref. 5.8][Ref. 5.9]Appendices L9.1 and L9.3 in Attachment L (Rev. 7)Appendix P9.1 in Attachment P (Rev. 8)4.6 Current T.S. Allowable Sediment Accumulation in the UHS4.7 Maximum Allowable CSCS Intake Temperature 1.5 feet (average)

Case Specific4.8 Other -See Attachment G for additional Revision 4 Design Inputs, Attachment H for additional Revision 5and 6 Design Inputs, Attachment I for additional Revision 7 Design Inputs, and Attachment 0 for additional Revision 8 Design Inputs.PROJECT NO. 11333-297 CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 22]

5.0 REFERENCES

5.1 a) LAKET-PC Computer Prog., Version 1.0, S&L Program No. 03.7.292-1.0, October 1997.b) LAKET-PC Plot Prog., Version 1.2, S&L Program No. 03.7.292-1.2, Nov. 1999c) LAKET-PC Computer Prog., Version 2.0, S&L Program No. 03.7.292-2.0, Aug. 2004 (Rev. 4).d) LAKET-PC Computer Prog., Version 2.2, S&L Program No.03.7.292-2.2, Dec. 2004 (Rev. 5, 6, 7, and8).5.2 "Ultimate Heat Sink for Nuclear Power Plants,"

U.S. Atomic Energy Commission, Regulatory Guide 1.27,Rev. 1, March 1974 and Rev. 2, January 1976.5.3 "Ultimate Heat Sink," LSCS-UFSAR, 9.2.6, Rev. 19.5.4 "Sensitivity Study for Ultimate Heat Sink Sizing,"

Calculation L-001581, Rev. 0, December 23, 1997.5.5 "Volume of the Ultimate Heat Sink (UHS)," Calculation L-001584, Rev. 1, March 25, 1998.5.6 a) "LaSalle County Station Cooling Lake Performance,"

Calculation L-002456, Rev. 1.b) "LaSalle County Station Cooling Lake Performance,"

Calculation L-002456, Rev. Ia.5.7 UHSAVG Computer

Program, S&L Program No. 03.7.642-1.0, August 1997.5.8 a) "UHS Heat Load," Calculation L-002453, Rev. 1, December 1999.b) "UHS Heat Load," Calculation L-002453, Rev. 2, April 2002.c) "UHS Heat Load," Calculation L-002453, Rev. 3, June 2012.d) "UHS Heat Load," Calculation L-002453, Rev. 4.5.9 LaSalle Technical Specifications, SR 3.7.3.2, Surveillance Requirements, Amendment 206/193.5.10 STMFUNC Computer

Program, S&L Program Number STM 03.7.598-2.0, May 2003.5.11 LaSalle CSCS Pump Curves, Crane-Deming, (Attachment D):a) T-5 669, "Pump Performance Curve for 2E 1 2-C300A,"

Rev. 1.b) T-5670, "Pump Performance Curve for 2EI2-C300B,"

Rev. 1.c) T-567 1, "Pump Performance Curve for 2E 1 2-C300C,"

Rev. 1.d) T-5672, "Pump Performance Curve for 2E12-C300D,"

Rev. 1.e) T-5695, "Pump Performance Curve for IE E 2-C300A,"

Rev. 1.f) T-5706, "Pump Performance Curve for 1 E12-C300B,"

Rev. 1.g) T-5707, "Pump Performance Curve for 1E1 2-C300C,"

Rev. 1.h) 1821-2, "Pump Performance Curve for 1E12-C300D,"

Rev. 1.i) 1940-2, "Pump Perfornance Curve for ODGOI P," Rev. A.j) 19516, "Pump Perfommance Curve for IDGO1P & 2DGO1P,"

Rev. 1.PROJECT NO. 11333-297 I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 223 11I CACLTOIO

-047RVSO O AEN.2I5.125.135.145.155.165.175.18VPF 3275-048, "Pump Performance Curve," Union Pump Co. HPCS DG Pump 1E22-C002 and HPCS DGPump 2E22-C002, Rev. 2 (Attachment D).L-001355, "LaSalle County Station CSCS Hydraulic Model," Rev. 005A.S&L's January 5, 1990 Study, "Comparison of Cooling Lake Temperature Predictions from the LAKETComputer Model with Observed Lake Temperatures for the Summer of 1989," in file WIN 0858 (provided as an Attachment to Reference 5.6, "LaSalle County Station Cooling Lake Performance,"

Calculation L-002456, Rev. 1, December 13, 1999).Marks' Standard Handbook for Mechanical Engineers, 91h Edition, Edited by Avallone and Baumeister, McGraw-Hill, 1987Letter from Mike Peters, Lasalle Station to Manuel Vega, S&L.

Subject:

Requested Input for L-002457Revision

5. (See pp. H23)Email from Paul Derezotes, S&L to Michael Duffy, S&L, "Uhsavg Program Capabilities Summary forLasalle."

(See pp. H24)GE Letter SC06-01, dated 1/19/2006, "Plants with GE Containment Design or Analysis (Attachment 1)"I PROJECT NO. 11333-297 CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 246.0 NUMERIC ANALYSIS6.1 Calculation of Plant Temperature Rise, ATThe CSCS temperature rise across the plant is computed per the method described in Section 2.1.6. TableG7.1 contains the average temperature rise for each time step for the Rev. 4, 5, and 6 analyses.

The averagetemperature rise for MUR PU and EPU is calculated in Attachment L for the Rev. 7 analysis.

The plantheat load calculation

[Ref. 5.8d] was revised to incorporate more realistic heat loads. The plant temperature rise based on the revised heat loads are calculated in Attachment P for the Rev. 8 analysis.

(Note that the heat load data for the Rev. 3 analyses for each three-hour increment is listed in Table 7.2 andFigure 7.14 of this calculation).

The EXCEL formulas and interpolation macro for the temperature rise up to Rev. 6 are printed inAttachments C and G. The interpolation is verified by inspection.

The tables are produced using EXCELVersion 97SR- 1. Formulas for determining the CSCS temperature rise across the plant in Rev. 7 are shownin Attachment L. Formulas for determining the CSCS temperature rise across the plant in Rev. 8 are shownin Attachment P.6.2 UHS Area and CapacityThe area-capacity profile of the UHS is determined for three sediment accumulation levels: 0, 0.5, and 1.5feet for Rev. 5 and 1 foot for Rev. 6. The existing technical specification limit on minimum UHS volume isan average sediment accumulation of 1.5 feet. The 0.5-foot and 1-foot sediment accumulation cases wereselected as an intermediate level of volume degradation that could potentially serve as a new technical specification limit. (As can be seen in the Table 6.1 computation of UHS volume, an average sedimentaccumulation of 0.5 ft corresponds to a UHS volume of 423.5 acre-ft.)

The area-capacity profile of the UHS is computed using the inputs of calculation L-001584

[Ref. 5.5] andthe methodology of calculation L-001581

[Ref. 5.4]. The UHS is modeled as a series of one-foot thickhorizontal slices, each in the shape of a frustum.

The survey data summarized in Design Input 4.1 providesthe surface areas of the top, A,, and the bottom, Ab, of each of these segments (of depth, d). The volume ofeach of these frustums is (A, + Ab + [(A,)(Ab)]A

)(d/3) [Ref. 5.15]. Deviations from the frustum shapewithin each of the segments are accounted for by the volume adjustments identified in Design Input 4.1.Because a somewhat simpler methodology was used, the results of the area-volume profile calculation areslightly different than those of calculation L-00l1584

[Ref. 5.5].The area-capacity profiles are computed in the Excel spreadsheet shown in Table 6.1 and Appendix C(EXCEL Version 97SR-1).

Sediment is assumed to deposit in a layer of uniform vertical thickness alongthe bottom and sloped sides of the UHS. A one-foot sediment accumulation results in a one-foot translation upward of the UHS geometry, which is modeled as a reassignment of the dimensions of each segment to thenext highest neighboring segment.

Fractional-foot sediment accumulation is modeled as the fractional reassignment of the dimensions of each segment to higher segments.

Each one-foot thick segment is thencomposed of fractional-foot thicknesses of two neighboring frustums.

For the 0, 0.5, 1, and 1.5-foot sediment cases, area and capacity were computed at elevation 690 ft and atone-foot intervals down to elevation 685 ft. The areas, incremental volume and total volume for theseelevations are shown in bold type in Table 6.1. The LAKET-PC runs use the area and volume for onlythese first six elevations.

For the 0, 0.5, 1, and 1.5-foot cases below elevation 685 ft, area and volume arePROJECT NO. 11333-297 CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 25)]computed only at intermediate elevations such as 683.5 and 684.5 ft.Data from the Table 6.1 spreadsheet that is used as LAKET-PC input is listed in Table 7.1.For Revision 7, the UHS volume and area input to LAKET are revised to incorporate the effects ofremoving water for fire-fighting.

See Attachumnent I for further documentation of the changes to UHSvolume and area. In addition, the effective area and effective volume of the UHS are changed as a result ofthe analysis in Attachment J. See Attachment I for further documentation of the changes to UHS volumeand area.Revision 8 uses the same UHS volume and area input as developed in Revision 7.6.3 Maximum Allowable Lake Temperature 6.3.1 UHS Temperature Limit of 100'F -Rev. 3 AnalysisThe UHS analysis is performed using the LAKET-PC computer program.

For postulated safe shutdownand design basis accident events, the peak UHS temperature must be kept within the CSCS intaketemperature limit of 100°F. The analysis determines the maximum lake intake temperature that can beallowed during normal operation, consistent with the 1007F temperature limit. Three sediment depths aremodeled for the worst 36-day composite temperature period. A no sediment case, a 0.5-foot sediment case,and a 1.5-foot sediment case are run for the updated weather data conditions.

The 0.5-foot sediment casecorresponds to a potentially new technical specification limit of 423.5 acre-ft on UHS volume. The 1.5-footcase corresponds to the current technical specification limit on average UHS sediment deposition.

In assuming the initial UHS temperature is equal to the maximum allowable temperature of the coolingwater supply to the plant from the lake, one is assuming conditions more severe than occur in the weatherhistory.

Because of this, the peak temperature occurs in the first day of these UHS transients and the timeof day at which the transient is assumed to begin becomes critical.

To account for the time of day at whichthe UHS transient may start, eight start times (00:00, 03:00, 06:00, 09:00, 12:00, 15:00, 18:00 and 21:00)are used for each of the three sediment depths being analyzed.

Limiting initial UHS temperatures are found for the 24 combinations of start time and sediment depth for:1. the first day of the UHS transient is worst day in the weather history (July 15, 1995), and2. the first day in the UHS transient is the first of the worst five days in the weather history (July 12 -17, 1995).The limiting initial UHS temperatures found by these two tests are listed in Table 7.3, plotted in Figure 7.1and documented in Attachment B. Table 7.3 indicates which of the two tests, the one-day or the five-daytest, produced the most restrictive temperature limit for each case. Three of the post-LOCA temperature transients are shown in Figures 7.2, 7.6, and 7.10. The corresponding post-LOCA drawdowns are shown inFigures 7.3, 7.7 and 7.11. (The LAKET-PC data used to generate these plots is provided in Attachment F.)The three cases selected for these plots are the sediment depths of 0, 0.5 and 1.5 ft, the start time of 09:00,and the worst 36-day composite weather history (consistent with R.G. 1.27, Rev. 2). The limiting initialUHS temperatures are consistent with a peak CSCS intake temperature of 1007F.In addition to determining the post-LOCA temperature response of the UHS to the worst 36-daytemperature period, the maximum UHS drawdown was determined for the worst 30-day evaporation period(in accordance with R.G. 1.97, Rev. 2). A 0-foot , a 0.5-foot and a 1.5-foot sediment case are run with thePROJECT NO. 11333-297 CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 263updated weather data. The 0.5-foot sediment case corresponds to a potentially new technical specification limit on UHS volume of 423.5 acre-ft and the 1.5-foot sediment case is the existing technical specification limit. UHSAVG selected the time of day at which the drawdown transient begins. LAKET-PC output forthe 30-day evaporation cases is documented in Attachment B. The post-LOCA temperature transients areshown in Figures 7.4, 7.8 and 7.12 and the post-LOCA drawdowns are shown in Figures 7.5, 7.9 and 7.13.(The LAKET-PC data used to generate these plots is provided in Attachment F.) Initial UHS temperatures were selected to produce a peak CSCS intake temperature of 1007F.6.3.2 UHS Temperature Limit of 102'F -Rev. 4 AnalysisFor this analysis, the limiting plant intake temperature is increased to 102'F. Limiting weather data isunchanged from the Rev. 3 analysis.

Further, the limiting start time for the transient is based on theparametric analysis per Rev. 3. Thus 09:00 hrs (9 AM) is taken as the most limiting start time. The limitinginitial UHS temperature obtained for this start time can be conservatively applied as a maximum operating lake temperature for any time during the day. Analysis and results are documented in Attachment G.6.3.3 UHS Temperature Limit of 104'F -Rev. 5 and 6 AnalysesFor this analysis, the limiting plant intake temperature is increased to 104'F. Limiting weather data isunchanged from the Rev. 3 analysis.

Further, the limiting start time for the transient is based on theparametric analysis per Rev. 3. Thus 09:00 hrs (9 AM) is taken as the most limiting start time. The limitinginitial UHS temperature obtained for this start time can be conservatively applied as a maximum operating lake temperature for any time during the day. Rev. 6 utilizes the same methodology as Rev. 5 for additional cases to analyze the maximum initial UHS temperatures for 1 ft of sediment.

Analysis and results aredocumented in Attachment H.6.3.4 UHS Temperature Limit of 104'F and 107'F for EPU and MUR PU -Rev. 7 AnalysisFor this analysis, the limiting intake temperature is 1047F and 1077F. The limiting weather data is updatedfrom the previous revisions, as documented in Attachment M. The limiting time of day at which the UHSstarts is determined by running Case 3a (107'F intake temperature, 18-in sediment level, EPU power level)at eight different start times (00:00, 03:00, 06:00, 09:00, 12:00, 15:00, 18:00 and 21:00) and determined tobe 6:00AM. The limiting initial UHS temperature obtained for this start time can be conservatively appliedas a maximum operating lake temperature for any time during the day. Analysis and results are documented in Attachment I.6.3.5 UHS Temperature Limit of 107'F for MUR PU -Rev. 8 AnalysisFor this analysis, the limiting intake temperature is 107'F. The limiting weather data is updated from theprevious revisions, as documented in Section 06.4 of Attachment 0 in order to conform to Rev. 2 of R.G.1.27 [Ref. 5.2]. Cases are run for eight different start times (00:00, 03:00, 06:00, 09:00, 12:00, 15:00, 18:00and 21:00) at four different sedimentation levels (0 in, 6 in, 12 in, and 18 in). Analysis and results aredocumented in Attachment 0.6.4 30-Day Evaporation Up to Revision 6 -The limiting initial temperature for the various amounts of siltation (see Section 7.1.3) isused as the starting point for the 30-day evaporation case to demonstrate negligible impact on previousresults.

Results documented in Attachment H demonstrate that the UHS evaporative losses are less thanI PROJECT NO. 11333-297 I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 2?7 11I CACLTOIO

-047RVSO O AEN.21.5-ft for the worst 30-day evaporative period.Revision 7 -The limiting initial temperature for the various amounts of siltation (see Section 7.1.3) is usedas the starting point for the 30-day evaporation case to determine the maximum amount of UHS drawdown.

For the 107'F limiting intake temperature and EPU power level, the limiting sediment level is determined tobe 0-in. For other cases (i.e. 104'F or MUR PU) only the limiting sediment level case (0-in) is run. Resultsare documented in Attachment I.Revision 8 -Worst 30-day net evaporation cases are run for the four levels of sedimentation.

Results aredocumented in Attachment 0.I PROJECT NO. 11333-297]

II CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 28m7.0 RESULTS AND CONCLUSIONS 7.1 Summary7.1.1 Historical Results -Rev. 3 and EarlierThe inclusion of weather conditions from 1982 to 1996 significantly increases the severity of the UHSdesign basis temperature transient.

The worst 36-day composite weather period was developed from July1948 through June 1996 weather history for the area. The UHSAVG program determined the worst 36-day(worst 5-day + worst 1-day + worst 30 consecutive day) period to be: 09:00, July 12, 1995 through 06:00,July 17, 1995; 12:00, July 15, 1995 through 09:00, July 16, 1995; and 15:00, July 10, 1983 through 12:00,August 9, 1983 (see Appendix A for details).

In analyzing the effect of beginning the UHS temperature transient at the maximum allowable cooling laketemperature, one is assuming conditions more severe than those that have occurred in the weather history.Because of this the peak UHS temperature occurs in the first day of the LOCA transient.

The results of theLAKET-PC analysis for the each of the UHS transient start times are summarized in Table 7.3 and Fig. 7.1.The maximum design intake temperature for the CSCS system is 100°F [Rev. 3 analysis].

To meet thisrequirement, the daily high temperature of the cooling water supply to the plant from the lake would have tobe limited to 97.5°F. This limit is consistent with the 96.50F limit at 9:00 am for 1.5-foot silt depth (341.4acre-ft volume) in the UHS (see Sec. 7.5 for justification).

According to Calculation L-002456, Rev. 1[Ref. 5.6], the 09:00 temperature of the cooling water supply to the plant from the lake on the worst day ofthe weather history is 95.4°F. As can be seen in Figure 7.1, the l.i1F margin between the historically hottest day and the initial UHS temperature limit is the smallest margin that exists for any starting time ofthe UHS design temperature transient.

This margin provides an assurance that there is little risk that themost restrictive temperature limits on cooling lake temperature will be exceeded in the future. If theminimum allowable UHS volume were changed to 423.5 acre-ft (0.5 ft average sediment depth),temperature of the cooling water supply to the plant from the lake would have to be limited to 97.50F at9:00.The maximum drawdown for power uprate under the maximum evaporation conditions is approximately 1.5feet (El. 688.5 feet). The UHSAVG program determined the worst 30-day evaporation period to be 12:00,June 18, 1954 through 09:00, July 18, 1954. The worst 30-day evaporation period shifted 3% days from theperiod identified in the UFSAR Sec. 9.2.6.3.1 prior to power uprate. This shift was caused by four minorchanges in the modeling of the worst evaporating period that were made when UHSAVG was converted from a mainframe to a PC-based program:1. The solar radiation model was improved.

2. The method for synthesizing missing weather data was improved.

3. The UHS surface area and volume were updated to reflect lake survey data.4. The average daily heat load was updated for power uprate.IIPROJECT NO. 11333-297 I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 29 11I CACLTOIO

-047RVSO O AEN.2I7.1.2 UHS Temperature Limit of 102'F -Rev. 4 AnalysesMaximum Initial UHS Temperatures

-Revision 4 (see Attachment G)Start Weather Sediment Limiting Initial UHSCase Time Data Level (in.) Methodology Temperature 1 09:00 1/30 0 Reg. Guide 1.27, Rev. 1 >100oF2 09:00 5/1/30 6 Reg. Guide 1.27. Rev. 2 >1000F3 09:00 1/30 18 Reg. Guide 1.27, Rev. 1 99.35°F4 06:00 1/30 18 Reg. Guide 1.27, Rev. 1 >100°F7.1.3 UHS Temperature Limit of 1040F -Rev. 5 and Rev. 6 AnalysesMaximum Initial UHS Temperatures

-Revision 5 (see Attachment H)StartTimela 09:002a 09:003a 09:00lb 09:002b 09:003b 09:00WeatherData1/301/301/305/1/305/1/305/1/30SedimentLevel (in.)06180618Methodology Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Limiting Initial UHSTemperature 103.00F102.90F102.30F103.60F103.50F102.90FMaximum Initial UHS Temperatures

-Revision 6 (see Attachment H)Start Weather Sediment Limiting Initial UHSCase Time Data Level (in.) Methodology Temperature 4a 09:00 1/30 12 Reg. Guide 1.27, Rev. 1 102.74b 09:00 5/1/30 12 Reg. Guide 1.27. Rev. 2 103.0The values above are rounded to the nearest 0.1 °F and do not include margin.7.1.4 UHS Temperature Limit of 1047F and 107'F at MUR PU and EPU -Rev. 7 AnalysesThe inclusion of weather conditions from January 1995 to September 2010 from LaSalle Station (withunavailable weather parameters from LaSalle Station taken from Peoria, IL, see Attachment K) furtherincreases the severity of the UHS design basis temperature transient.

The limiting initial UHS temperatures at the sediment levels analyzed for a plant intake limit of 104'F or 107'F at MUR PU and EPU powerlevels are shown in the table below (See Attachment I for further documentation).

I PROJECT NO. 11333-297

-I I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 30 11I CACLTOIO

-047RVSO O AEN.3IMUR PU Maximum Initial UHS Temperatures

-Revision 7 (see Attachment I)CaselaMUR2aMUR3aMUR4aMURla_MUR_104F 2aMUR_104F 3aMUR_104F 4aMUR_104F StartTime06:0006:0006:0006:0006:0006:0006:0006:00WeatherData1/301/301/301/301/301/301/301/30SedimentLevel (in.)0618120618Methodology Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Limiting Initial UHSTemperature 103.63103.32102.46102.93100.3099.9591.6889.5412 Reg. Guide 1.27, Rev. 1EPU Maximum Initial UHS Temperatures

-Revision 7 (see Attachment I).Casela2a3a_12am3a_.3am3a_6am3a_9am3a_12pm3a_3pm3a_6pm3a_9pm4a1a_104F2a_104F3a_104F4a_104FStartTime06:0006:0000:0003:0006:0009:0012:0015:0018:0021:0006:0006:0006:0006:0006:00WeatherData1/301/301/301/301/301/301/301/301/301/301/301/301/301/301/30SedimentLevel (in.)06181818181818181812061812Methodology Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Reg. Guide 1.27, Rev. 1Limiting Initial UHSTemperature 103.63103.32104.95103.14102.42103.61105.80106.97107.00107.00102.93100.3096.8087.0185.477.1.5 UHS Temperature Limit of 107'F -Rev. 8 AnalysesRevision 8 incorporates the weather conditions from January 1995 to September 2010 from LaSalle Stationand analyses the UHS design basis temperature transient based on a more realistic MUR PU (3559 MW,)heat load rejected to the UHS and weather selection based on R.G. 1.27, Rev. 2 [Ref. 5.2]. The LAKET-PC[Ref. 5.1] cases are run using the TS limiting temperatures as the initial temperature, and the results arecompared to the UHS temperature limit of 107°F. The results of this analysis are shown below (SeeAttachment 0 for further documentation).

I- PROJECT NO. 11333-297 I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 31 11UHS Temperatures at Maximum Allowable Initial Temperature

-Revision 8 (see Attachment 0)CaseStart Weather SedimentTime Data Level (in.)Methodology Case la_12amCase la_3amCase la_6amCase la_9amCase la_12pmCase la_3pmCase 1 a_6pmCase la_9pmCase 2a_12amCase 2a_3amCase 2a_6amCase 2a_9amCase 2a_12pmCase 2a_3pmCase 2a_6pmCase 2a_9pmCase 3a_12amCase 3a_3amCase 3a_6amCase 3a_9amCase 3a1 2pmCase 3a_3pmCase 3a_6pmCase 3a_9pmCase 4a_12amCase 4a_3amCase 4a_6amCase 4a_9amCase 4a_12pmCase 4a_3pmCase 4a_6pmCase 4a_9pm00:0003:0006:0009:0012:0015:0018:0021:0000:0003:0006:0009:0012:0015:0018:0021:0000:0003:0006:0009:0012:0015:0018:0021:0000:0003:0006:0009:0012:0015:0018:0021:003333333333333333333333333333333333333333333333333333333333333333Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Reg. Guide 1.27. Rev. 2Initial UHSTemperature

(°F)104.53102.72102.00103.19104.75104.75104.75104.75104.53102.72102.00103.19104.75104.75104.75104.75104.53102.72102.00103.19104.75104.75104.75104.75104.53102.72102.00103.19104.75104.75104.75104.75Maximum UHSTemperature (OF)104.53102.72103.12104.33104.97104.75104.75104.75105.21104.54103.21104.42104.99104.75104.75104.75104.53105.75106.15105.31105.05104.75104.75104.75105.86105.97105.33104.54105.01104.75104.75104.75I PROJECT NO. 11333-297 I

CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 327.1.6 UHS Drawdown for Temperature Limit of 1040F -Rev. 5 and 6 AnalysesComputed drawdown for the UHS is <1.5-ft for the limiting case analysis.

7.1.7 UHS Drawdown for Temperature Limit of 104'F/ 07'F at MUR PU and EPU -Rev. 7 AnalysisThe computed drawdown for the UHS for a temperature limit of 104'F or 107'F at MUR PU and EPUpower levels are shown below (See Attachment I for further documentation).

MUR PU Maximum Lake Drawdown

-Revision 7 (see Attachment 1)Sediment Maximum Lake DrawdownCase Weather Data Level (in.) (ft)1lcMUR Worst Net Evap. 0 2.241c_MUR_104F Worst Net Evap. 0 2.221) Determined from initial lake elevation of 689.98-ft.

EPU Maximum Lake Drawdown

-Revision 7 (see Attachment I)Sediment Maximum Lake DrawdownCase Weather Data Level (in.) (ft)11c Worst Net Evap. 0 2.272c Worst Net Evap. 6 2.253c Worst Net Evap. 18 2.204c Worst Net Evap. 12 2.23Ic_104F Worst Net Evap. 0 2.261) Determined from initial lake elevation of 689.98-ft.

7.1.8 UHS Drawdown for Temperature Limit of 107'F -Rev. 8 AnalysisThe computed drawdown for the UHS for a temperature limit of 107'F for the new heat loads developed inL-002453

[Ref. 5.2d] are shown below (See Attachment 0 for further documentation).

Maximum Lake Drawdown

-Revision 8 (see Attachment 0)Sediment Maximum Lake DrawdownCase Weather Data Level (in.) (ft)11c Worst Net Evap. 0 1.422c Worst Net Evap. 6 1.423c Worst Net Evap. 18 1.424c Worst Net Evap. 0 1.42Worst Net Evap.,NetEvap_0.1 Wind Power Law 18 1.47Exponent

= 0.1Worst Net Evap.,NetEvap_0.2 Wind Power Law 18 1.45Exponent

= 0.21) Determined from initial lake elevation of 689.98-ft.

IPROJECT NO. 11333-297

-I CALCULATION NO. L-002457 REVISION NO. 8 PAGE NO. 33J7.2 Compliance with Acceptance Criteria7.2.1 Acceptance Criterion

1. 1 -Peak Temperature

-Acceptance Criterion

1. 1 is met provided the plant isoperated and monitored and maintain UHS temperatures below the applicable limits per the results listed inSection 7.1.2 (Rev. 4), Section 7.1.3 (Rev. 5 and 6), or Section 7.1.4 (Rev. 7).For Rev. 8, Acceptance Criterion

1. 1 is met as the UHS temperature remains below 107'F for all worstweather cases as shown in Section 7.1.5.7.2.2 Acceptance Criterion

1. 2 -UHS Inventory

-The maximum expected lake drawdown, with no loss ofinventory due to spent fuel pool makeup, is given in Section 7.1.8. This will be used in calculation L-001355 [Ref. 5.13].7.2.3 OtherThe following table lists the cases that were run with the updated software prior to performing calculations for Revision

5. This was done to verify the results that were obtained in the original calculations wereobtained again with the updated software.

LAKET output for the verification cases is provided inAttachment H.Verification Original Calculation Results with MostCase Revision Results Current Software(Plant Inlet Temp, *F) (Plant Inlet Temp, TF)CGOe Revision 3 99.95 99.95C06e Revision 3 99.97 99.96C18e Revision 3 99.97 99.96C0609 Revision 4 99.94 99.98Note: Revisions 6 through 8 utilized the same version of LAKET [Ref. 5. l d] as Revision 5.7.3 Tables* Table 6.1: Determination of UHS Area-Capacity Profiles* Table 7.1: UHS Area-Capacity Inputs for LAKET-PC* Table 7.2: Plant Temperature Rise* Table 7.3: Maximum Allowable Initial Lake Temperatures

• Table G7. 1: Plant Temperature Rise* Table Q7.2: Cumulative Summary for Case 1 -0" Sediment, 09:00 start time* Table G7.3: Cumulative Sumrmary for Case 2 -6" Sediment, 09:00 start time4 Table G7.4: Cumulative Summary for Case 3 -18" Sediment, 09:00 start time* Table G7.5: Cumulative Summary for Case 4 -18" Sediment, 06:00 start time* Table H7.0: Overall Sumnrnary of Cases and Results* Table H7.1: Cumulative Summary for Case la -0" Sediment, 09:00 Start, 1/30 Weather Data4 Table H7.2: Cumulative Summary for Case lb -0" Sediment, 09:00 Start, 5/1/30 Weather Data4 Table H7.3: Cumulative Summary for Case lc -0" Sediment, 12:00 Start, Worst 30-day Evap. Data# Table H7.4: Cumulative Sulmnary for Case 2a -6" Sediment, 09:00 Start, 1/30 Weather DataPROJECT NO. 11333-297 I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 334 11I Table H7.5: Cumulative Summary for Case 2b -6" Sediment, 09:00 Start, 5/C/30 Weather Data0 Table H7.6: Cumulative Summary for Case 2c -6" Sediment, 12:00 Start, Worst 30-day Evap. Data* Table H7.7: Cumulative Summary for Case 3a -18" Sediment, 09:00 Start, 1/30 Weather Data* Table H7.8: Cumulative Summary for Case 3b -18" Sediment, 09:00 Start, 5/1/30 Weather Data* Table H7.9: Cumulative Summary for Case 3c -18" Sediment, 12:00 Start, Worst 30-day Evap. Data* Table H7.10: Cumulative Summary for Case 4a -12" Sediment, 09:00 Start, 1/30 Weather Data# Table H7.11: Cumulative Summary for Case 4b -12" Sediment, 09:00 Start, 5/1/30 Weather Data* Table H7.12: Cumulative Summary for Case 4c -12" Sediment, 12:00 Start, Worst 30-day Evap.Data* Table H7.13: Table of Outlet FilesRevision 74 Table 12.1: Initial Lake Level* Table 12.2: List of LAKET Cases* Table 16.1: LAKET Files* Table 17.1a: MUR PU (3559 MW,) Overall Summary for Maximum Temperature

• Table 17.1b: EPU (4067 MW,) Overall Summary for Maximum Temperature

• Table I7.2a: MUR PU Overall Summary for Maximum Evaporation

• Table 17.2b: EPU Overall Summary for Maximum Evaporation Revision 84 Table N6-4: Calculation of Upper Layer Depth* Table 02-1: Initial Lake Level+ Table 02-2: List of LAKET Cases* Table 04-I1: Proposed TS Limits* Table 06-1: UHS Transit Time Calculation

• Table 06-2: Worst Weather Periods -11 0°F Initial Temperature

• Table 06-3: Worst Weather Periods -120'F Initial Temperature

• Table 06-4: Worst Weather -9 Hour and 12 Hour Period* Table 06-5: Worst Weather Files* Table 06-6: Worst Weather Comparison

• Table 06-7: 33-24-30 Case Weather Files* Table 06-8: 33-24-30 Case Comparison

• Table 06-9: Worst Temperature Cases* Table 06-10: Worst Net Evaporation Cases* Table 06-11: Wind Sensitivity Runs* Table 06-12: UHS Drawdown Curves for Mixing Zone Sensitivity Runs* Table 06-13: UHS Mixing Sensitivity Runs7.4 FiguresFigure 7. 1:Figure 7.2:Figure 7.3:Figure 7.4:Figure 7.5:Figure 7.6:Figure 7.7:Limiting Lake Temperatures vs. Time of DayCase 0009: UHS LOCA Temperature Transient, Updated Worst 36-Day Temperature PeriodCase 0009: UHS LOCA Drawdown, First 30 Days of Updated Worst 36-Day Temp. PeriodCase 00e: UHS LOCA Temperature Transient, Updated Worst 30-Day Evaporation PeriodCase 00e: UHS LOCA Drawdown, Updated Worst 30-Day Evaporation PeriodCase 0609: UHS LOCA Temperature Transient, Updated Worst 36-Day Temperature PeriodCase 0609: UHS LOCA Drawdown, First 30 Days of Updated Worst 36-Day Temp. PeriodPROJECT NO. 11333-297

-I I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 35 11I C.8 06e: RVI NO. 8 PAGE NO. 35* Figure 7.8: Case 06e: UHS LOCA Temperature Transient, Updated Worst 30-Day Evaporation Period* Fiuure 7.9: Case06e:

UHS LOCA Drawdown Updated Worst 30 Day Evaporation Period* Figure 7.10: Case 1809: UHS LOCA Temperature Transient, Updated Worst 36-Day Temperature Period* Figure 7.11: Case 1809: UHS LOCA Drawdown, First 30 Days of Updated Worst 36-Day Temp. Period* Figure 7.12: Case 18e: UHS LOCA Temperature Transient, Updated Worst 30-Day Evaporation Period* Figure 7.13: Case 18e: UHS LOCA Drawdown, Updated Worst 30-Day Evaporation Period* Figure 7.14: UHS Heat Load Following LOCA* Figure G7. 1: UHS Outlet Temperature vs. Days After SCRAM* Figure G7.2: UHS Inlet Temperature vs. Days After SCRAM* Figure G7.3: Limiting Lake Temperatures vs. Time of Day -Recreation of Figure 7.1 from main body ofcalculation

• Figure H7. 1: 1/30 Plant Inlet Temperature vs. Day* Figure H7.2: 1/30 Plant Outlet Temperature vs. Day* Figure H7.3: 5/1/30 Plant Inlet Temperature vs. Day* Figure H7.4 5/1/30 Plant Outlet Temperature vs. Day+ Figure H7.5: Case 3a: UHS LOCA Temperature Transient, Worst 3 1-Day Temperature Period4 Figure H7.6: Case 3b: UHS LOCA Temperature Transient, Worst 36-Day Temperature Period* Figure H7.7: Case 3c: UHS LOCA Drawdown, Worst 30-Day Evaporation Weather PeriodRevision 7* Figure 17.1: Plant Outlet Temperature (MUR PU)* Figure 17.2: Plant Outlet Temperature (EPU)* Figure 17.3: Plant Inlet Temperature (MUR PU)* Figure 17.4: Plant Outlet Temperature (EPU)4 Figure 17.5: Case 3aMUR: UHS LOCA Temperature Transient, Worst 3 1-Day Temperature Period+ Figure 17.6: Case 4aMUR: UHS LOCA Temperature Transient, Worst 31-Day Temperature Period4 Figure 17.7: Case 3a: UHS LOCA Temperature Transient, Worst 31 -Day Temperature Period6 Figure 17.8: Case 4a: UHS LOCA Temperature Transient, Worst 31-Day Temperature Period* Figure 17.9: Case I cMUR: UHS LOCA Drawdown, Worst 30-Day Evaporation Weather Period4 Figure 17.10: Case 1 c: UHS LOCA Drawdown, Worst 30-Day Evaporation Weather PeriodRevision 8* Figure 02.1: Existing UHS Model* Figure 02.2: Modified UHS Model for Mixing Effects* Figure 02.3: MIT Report 161 [Ref. 05.7] Two Stage Pond* Figure 07.1: Case 3a_6AM: UHS LOCA Temperature Transient, Worst 33-Day Temperature Period0 Figure 07.2: Case 1 c: UHS LOCA Drawdown, Worst 30 Day Evaporation Weather Period0 Figure 08.2-1: Five Day Temperature Profile for the 10% Mixing Case* Figure 08.2-2: Five Day Temperature Profile for the 20% Mixing Case* Figure 08.2-3: Plant Inlet Temperature for 6AM Cases* Figure 08.2-4: Case Mixing -10% -9AM Results* Figure 08.2-5: Case Mixing -20% -12PM Results7.5 Recommendations None.I PROJECT NO. 11333-297 I

CALCULATION NO. L-002457 REVISION NO. 8Table 6.1: Determination of UHS Area- Capacity Profiles (I of 2)PAGE NO. 36I I I i ] -IIwith No Sediment with 0.5 feet of SedimentSurface Incremental Total Surface Incremental TotalElevation Slice Area Volume Volume Elevation Slice Area Volume Volume(feet) Number (acres) (acre-feet)

(acre-feet)

(feet) Number (acres) (acre-feet)

(acre-feet) 0.5000 0.5000675 0.0076 675.500 0.0076 .15 0.03 15 0.03676 0.0640 0.03 676.500 0.0640 0.0314 0.12 1 1 14 0.12_677 0.1857 0.15 677.500 0.1857 _ 0.1513 0.25 13 , 0.25678 0.3263 0.40 678.500 0.326 0.40_12 0.33 12 0.3312 (Ad4) 3.4397 2.27 "- 12 (Ad)) 3.44 2.2712 (Adj) 1.686 12 (AdJ) 1.66679 5.1493 4.66 679.500 5.15 4.6611 5.73 11 5.73680 6.3270 10.39 680.500 6.33 10.3910 7.20 10 7.20681 8.1173 " 17.59 681.500 8.12 17.599' ______ 8.91 _____ 9 ____ _ 8.91682 9.7301 26.50 682.500 9.73 26.5008 10.89 8 10.89683 12.0857 37.39 683.500 12.09 37.397 -" 13.40 1 1 7 13.40684 14.7500 50.79 1 684.500 14.75 50.796 21.79 6 21.796 (Adj) -0.84 6 (Adl) -0.84685 29.6984 71.74 (0.5H6) 9.185 29.70 685.000 22.22 59.975 (Adg) 32.337Q 21.67 686 27.785 (Adj) 19.54 " 685.500 29.70 71.74686 77.3331 142.64 5 29.704 78.15 5 (Adj) 32.34 21.67687 78.9604 220.79 5 (Adj) 19.543 79.75 686.000 29.70 102.18688 80.5479 300.54 & 45 53.722 81.35 686.500 77.33 142.64689 82.1518 381.89 4 78.151 82.99 687.000 78.15 181.44690 83.8297 "" 464.88 _ 3&4 78.96" 687.500 78.96 220.793 79.75688.000 79.75 260.792_&3 80.55688.500 80.55 300.542 81.35689.000 81.35 82.16 341.34__________1&2 82.16689.500 82.15 381.89_________

___ 1 82.99 ____690.000 __82._9 82.99 423.50690.500 83.83 _ _t 464.88PROJECT NO. 11333-297 CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 37Table 6.1: Determination of IJHS Area- Capacity Profiles (2 of 2)wIth 1 feet of Sediment with 1.5 feet of SedimentSurface Incremental Total .I Surface Incremental TotalElevation Slice Area Volume Volume Elevation Slice Area Volume Volume(feet) Number (acres) (acre-feet)

(acre-feet)

(feet) Number (acres) (acre-ft)eet

.... 0.5000 0.5000676 ...... 0.0076 0 676.500 0.0076 0. .03 -15 0.03 _____15 ____ 0.03677 0.0640 0.03 677,500 0.0640 0.0314 1 0.12 14 0.12678 0.1857 0.15 678.500 0.1857 ' 0.1513 0.25 13 0.25 _679 0.3263 0.40 679.500 0.3263 0.4012 0.33 ' 12 0.3312 (Ad]) 3.4397 2.27 12 (AdD) 3.4397 2.27-12 (Adj) 1.66 12 (Adj) 1.6668o 5.1493 4.66 680.500 11 5.1493 4.6e11 5.73_ ____ 11 5.73 _____681 6.3270 10.39 681.500 6.3270 10.3910 7.20 10 "'7.20682 8.1173 17.60 682.500 "' 8.1173 17.599 8.91 9 8.91683 9.7301 26.51 683.500 9.7301 26.50S10.89 8 10.89684 7 12.0857 13.40 37.39 684.500 12.0857 13. .40 37.397 13.40 ___ 7 ____ 13.40685 14.7500 50.79 (0.5)(7)

.6.37a 6 21.79 6885.000 13.42 43.766 (Adj) _ -0.84 67 18.22686 29.6984 71.74 685.500 14.7500 o50.795 29.70 6 21.795 (Ad)) 32.3376 21.67 6 (Adj) -0.845 (Adj) 77.3331 19.54 14___2._5 686.000 "s 22.22 59.08687 77.3331 ____ 142.65 58,8 27.768 ____-78.15 686.500 1 29.6984 71.74688 78.9604 220.79 5 29.703 79.76 5 (Adj) 32.34 21.67689 80.5479 300.55 5 (Adj) 19.542 81.35 687.000 29.70 102.19690 62.1516 381.89 4&5 53.72687.500 77.3331 142.644 78.1568.000 78.15 181.86" ________

____ ____ 384 78'.96688.500 3&4 78.9604 78.96 220.793 _79.76689.000 79.78 260.8f2&3 80.88689.500 80.5479 300.54___ ____2 81.35"1 690.000 2 81.35 341.366 82.1616 381.89PROJECT NO. 11333-297 CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 38Table 7.1 -UHS Area-Capacity Inputs for LAKET-PC[ I I -----__ _ I With No Sediment With 0.5 feet of Sediment With 1.0 feet of Sediment With 1.5 feet of SedimentElevation

--Surface Area Volume -Surface Area -Volume Surface Area Volume Surface Area- Volumeacres _ (acre-feet)

(acres) (acre-feet)

__(acres)

_

685 29.70 71.7 22.22 60.0 14.75 50.8 13.42 43.8686 77.33 142.6 i 29.70 102. 29.70 71.7 2222 6.0687 78.96 220.8 -78.15 181.8 77.33 142.6 29.70 Jr 102.2688 80.55 300.5 t 7.5 260.8 78.96 220.8 78.15 I 181.9689 82.15 381.9 f 81.35 341.4 80.55 300.5 79.75 260.8690 83.83 464.9 Ki 82.99 423.5 82.15 381.9 81.35 1 341.4PROJECT NO. 11333-297 Non-proprietary versionREVISION NO. 8CALCULATION NO. L-002457PAGE NO. 39Table 7.2 -Plant Temperature Rise (1 of 6)CSCS Flowrate 86 cfs Mass Flow 1 9,201,392 1 bm/hýDe~nsl 62.02 9I2 1 IbmiFStartingTime(hr)EndingTime(hr)PlantTemperature Rise(Den F)0 3 35.263 6 28.796 9 16.689 12 16.2812 15 15.3215 18 14.9718 21 14.5321 24 14.2924 27 13.8827 30 13.4530 33 13.3033 36 13.3036 39 13.3039 42 13.2442 45 12.7345 48 12.7348 51 12.5751 54 12.4354 57 12.2457 60 12.0260 63 12.0263 66 12.0266 69 12.0269 72 12.0172 75 11.4975 78 11.4978 81 11.4981 84. 11.4984 87 11.4987 90 11.4990 93 11.4993 96 11.4996 99 11.0999 102 11.07102 105 11.07105 108 11.07108 111 11.07111 114 10.87114 117 10.86117 120 10.86120 123 10.50123 126 10.50126 129 10.50129 132 10.50132 135 10.50135 138 10.50.... ... ]]138141 1 10.50Note: This table represents historical input for the Rev, 3 analysis and earlier.

Rev. 4 and Rev. 5 analyses arebased on plant temperature rise data presented in Attachment G.

Non-proprietary versionREVISION NO. 8CALCULATION NO. L-002457PAGE NO. 40Table 7.2 -Plant Temperature t9se (2 of 6)StartingTime(hr)EndingTime(hr)PlantTemperature Rise(Deg F)II141 144 10.50144 147 10.50147 150 10.50150 153 10.50153 156 10.50156 159 10.50159 162 10.50162 165 10.50165 168 10.27168 171 9.99171 174 9.99174 177 9.99177 180 9.99180 183 9.99183 186 9.99186 189 9.99189 192 9.99192 195 9.99195 198 9.99198 201 9.99201 204 9.99204 207 9.99207 210 9.99210 213 9.99213 216 9.99216 219 9.99219 222 9.99222 225 9.72225 228 9.70228 231 9.70231 234 9.70234 237 9.70237 240 9.70240 243 9.54243 246 9.54246 249 9.54249 252 9.54252 255 9.54255 258 9.54258 261 9.54261 264 9.54264 267 9.54267 270 9.54270 273 9.54273 276 9.54276 279 9.40279 282 9.19282 285 9.19285 1 2889.19.11JJNote: This table represents historical input for the Rev. 3 analysis and earlier.

Rev. 4 and Rev. 5 analyses arebased on plant temperature rise data presented in Attachment G.

Non-proprietary versionREVISION NO. 8CALCULATION NO. L-002457PAGE NO. 41Table 7.2 -Plant Temperature Rise (3 of 6)StartingTime(tr)EndingTime(hr)PlantTemperature Rise(Den F)IIII288 291 9.19291 294 9.19294 297 9.19297 300 9.19300 303 9.19303 306 9.19306 309 9.19309 312 9.19312 315 9.19315 318 9.19318 321 9.19321 324 9.19324 327 9.19327 330 9.19330 333 9.19333 336 9.19336 339 9.19339 342 9.19342 345 9.19345 348 9.19348 351 9.19351 354 9.19354 357 9.19357 360 9.19360 363 9.19363 366 9.19366 369 9.19369 372 9.19372 375 9.19375 378 9.19378 381 9.19381 384 9.19384 387 9.19387 390 9.19390 393 9.19393 396 9.19396 399 9.19.399 402 9.19402 405 9.19405 408 9.19408 411 9.19411 414 9.19414 417 9.15417 420 8.85420 423 8.85423 426 8.85426 429 8.85429 432 8.85432435 I8.85Note: This table represents historical input for the Rev. 3 analysis and earlier.

Rev. 4 and Rev. 5 analyses arebased on plant temperature rise data presented in Attachment G.

Non-proprietary versionREVISION NO. 8CALCULATION NO. L-002457PAGE NO. 42Table 7.2 -Plant Temperature Rise (4 of 6)StartingTime(hr)EndingTime(hr)PlantTemperature Rise(Dea F)435 438 8.85438 441 8.85441 444 8.85444 447 8.85447 450 8.85450 453 8.85453 456 8.85456 459 8.85459 462 8.85462 465 8.85465 468 8.85468 471 8.85471 474 8.85474 477 8.85477 480 8.85480 483 8.72483 486 8.70486 489 8.70489 492 8370492 495 8.70495 498 8.70498 501 8.70501 504 8.70504 507 8.70507 510 8.70510 513 8.70513 516 8.70516 519 8.70519 522 8.70522 525 8.70525 528 8.70528 531 8.70531 534 8.70534 537 8.70537 540 8.70540 543 8.70543 546 8.70546 549 8.70549 552 8.70552 555 8.70555 558 8.52558 561 8.49561 564 8.49564 567 8.49567 570 8.49570 573 8.49573 576 8.49576 579 8.49579 5828.4911Note: This table represents historical input for the Rev. 3 analysis and earlier.

Rev. 4 and Rev. 5 analyses arebased on plant temperature rise data presented in Attachment G.

Non-proprietary versionREVISION NO. 8CALCULATION NO. L-002457PAGE NO. 43Table 7.2 -Plant Temperature Rise (5 of 6)StartingTime(hr)EndingTime(hr)PlantTemperature Rise(Deg F)I582 585 8.49585 588 8.49588 591 8.49591 594 8.49594 597 8.49597 600 8.49600 603 8.49603 606 8.49606 609 8.49609 612 8.49612 615 8.49615 618 8.49618 621 8.49621 624 6.49624 627 8.49627 630 8.49630 633 8.49633 636 8.49636 639 8.49639 642 8.49642 645 8.49645 648 8.49648 651 8.49651 654 8.49654 657 8.49657 660 8.49660 663 8.49663 666 8.49666 669 8.49669 672 .8.49672 675 8.49675 678 8.49678 681 8.49681 684 8.49684 687 8.49687 690 8.49690 693 8.49693 696 8.49696 699 8.49699 702. 8.49702 705 8.49705 708 8.49708 711 8.49711 714 8.49714 717 8.49717 720 8.44720 723 8.22723 726 8.22726 1 7298.221]Note: This table represents historical input for the Rev. 3 analysis and earlier.

Rev. 4 and Rev. 5 analyses arebased on plant temperature rise data presented in Attachment G.

Non-proprietary versionREVISION NO. 8CALCULATION NO. L-002457PAGE NO. 44Table 7.2 -Plant Temperature Rise (6 of 6)StartingTime(hr)EndingTime(hr)PlantTemperature Rise(Den F)729 732 8.22732 735 8.22735 738 8.22738 741 8.22741 744 8.22744 747 8.22747 750 8.22750 753 8.22753 756 8.22756 759 8.22759 762 8.22762 765 8.22765 768 8.22768 771 8.22771 774 8.22774 777 8.22777 780 8.22780 783 8.22783 786 8.22786 789 8.22789 792 8.22792 795 8.22795 798 8.22798 801 8.22801 804 8.22804 807 8.22807 810 8.22810 813 8.22813 816 8.22-816 819 8.22819 822 8.22822 825 8.22825 828 8.22828 831 8.22831 834 8.22834 837 822837 840 8.22840 843 8.22843 846 8.22846 849 8.22849 852 8.22852 855 8.22855 858 8.22858 861 8.22861 864 8.2236 Day Average Heat Load_Note: This table represents historical input for the Rev. 3 analysis and earlier.

Rev. 4 and Rev. 5 analyses arebased on plant temperature rise data presented in Attachment G.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 45Table 7.3: Maximum Allowable Initial Lake Temperatures Maximum MaximumSediment Time of Day Allowable Initial Peak 30-DayCase iUmiting Weather Condition Accumulation Start Time Temperature Temperature Drawdown0000 0.0 ft 0:00 100.0 OF 100.00 OF -0003 worst day temperature 0.0 ft 3:00 99.3 OF 99.94 OF0006 worst day temperature 0.0 ft 6:00 98.6 OF 99.98 "F _0009 worst day temperature 0.0 ft 9:00 98.0 OF 100.00 OF _0009 worst 5/1/30 day temperatures 0.0 ft 9:00 98.0 OF 99.94 OF 1.35 ft0012 worst 511130 day temperatures 0.0 ft 12:00 98.5 OF 99.99 OF 1.35 ft0015 worst 5/1/30 day temperatures 0.0 ft 15:00 99.5 OF 99.94 OF 1.35 ft0018 -_0.0 ft 18:00 100.0 OF 100.00 OF -0021 -0.0 ft 21:00 100.0 OF 100.00 OF0600 0.5 ft 0:00 100.0 OF 100.00 OF0603 worst day temperature 0.5 ft 3:00 99.2 OF 99.96 "F0606 worst day temperature 0.5 ft 6:00 97.9 "F 99.98 OF0609 worst 511/30 day temperatures 0.5 ft 9:00 97.5 OF 99.98 "F 1.35 ft0612 worst 5/1/30 day temperatures 0.5 ft 12:00 98.3 OF 99.96 "F 1.35 ft0615 worst 511/30 day temperatures 0.5 It 15:00 99.5 OF 99.97 "F 1.36 ft0618 0.5 ff 18:00 100.0*F 100.00 "F -0621 0.5 ff 21:00 100.0 OF 100.00"F

-1800 1.5 ff 0:00 100.0 OF 100.00"F

-1803 worst day temperature 1.5 ft 3:00 98.8 OF 99.96 OF1806 worst day temperature 1.5 ft 6:00 97.2 OF 99.98 OF1809 worst day temperature 1.5ft 9:00 96.5 OF 99.98 OF1809 worst 511/30 day temperatures 1.5 ft 9:00 96.5 OF 99.80 "F 1.35 ft1812 orst5/1/30 day temperatures 1.5 ft 12:00 97.5 F 99.Q8 OF .t1815 worst 5/1/30 day temperatures 1.5ft 15:00 99.4OF 99.97 OF 1.36 ft1818 1.5 ft 18:00 100.0 OF 100.00"F

-1821 1.5ft 21:00 100.0 OF 100.00 OF00e worst 30 day evaporation 0.0 ft 12:00 97.6 OF 99.95 OF 1.46 ft06e worst 30 day evaporation 0.5 ft 12:00 97.4 OF 99.97 "F 1.46 ft18e worst 30 day evaporation 1.5 ft 12:00 96.8 OF 99.97 OF 1.48 ftNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 102'F plant intake temperature limit, and Attachment H for a 1047F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457101100REVISION NO. 8Fig. 7.1: Uml"ng Lake Temperatures vs. Time of DayPAGE NO. 46eaI0999897,- Lake Response to Worst DmIn Weather History93.0 300 600 900 1200 1600 1800 2100Tkne of Day (his)Note: This table represents historical results for the Rev. 3 analysis.

Rev. 4 and Rev. 5 analyses results are presented inAttachments G and H, respectively.

2400I CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 47Fig. 7.2, Case 0009: UHS LOCA Temperature Transient Updated Worst 36-Day Temperature Period(d = 0 in, t 0900 hrs, Ti m 98.OF)130120-utts h4d Taqw8ture J-UHS Tor"Mrb"V\jA\AV\Ai(\-N A týýýMIL*aUt.110100VAIAIAI\NI\X N A. AAIV\V-Wvvv$J V 'flu I70-, .........' ............0 1 2 3 4 5 8 7 8 9 10 11 U2 13 14 15 16 17 IS It 2D 21 22 23 24 25 26 2V 28 20 3D 31 32 33 34 35. 36Days after SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 102*F plant intake temperature limit, and Attachment H for a 104'F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 48Fig. 7.3, Case 0009: UHS LOCA DrawdownFirst 30 Days of Updated Worst 36-Day Temperature Period(d = 0 in, t = 0900 hrs, Ti a 98.OF)69025I.0 i 2 3 4 5 6 7 8 9 10 11 12 U3 14 15 16 17 18 19 2 21 22 23 24 25 28 27 28 29 30Days aft SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 1020F plant intake temperature limit, and Attachment H for a 104'F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 49Fig. 7.4, Case 00e: UHS LOCA Temperature Transient Updated Worst 30-Day Evaporation Period(d .0 In, t 1200 hts, Tij ST7.F)130 -UHS tWi TanPKrui-UHS OuM~ Tempeashure 120"110A A.2* 00900 1 2 3 4 5 6 7 8 9 10 1 1 2 13 14 15 16 17 18 10 2D 21 22 23 24 25 28 27 28 2D 30Day after SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 1027F plant intake temperature limit, and Attachment H for a 104*1F plant intake temperature limit These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 50Fig. 7.5, Case 00e: UNS LOCA DrawdownUpdated Worst 30-Day Evaporation Period(d = 0 In, t = 1200 hrs, Ti = 97.6F)6N0.25690.00689.75-10C'I689.50689.25689.00668.76688.50688.250 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 25 27 28 29 30Days after SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 102OF plant intake temperature limit, and Attachment H for a 104OF plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 51Fig. 7.6, Case 060S: UH, LOCA Temperature Transient Updated Worst 36-Day Temperature Period(d =6 in, t = 0900 hrs, Ti = 97.5F)o100Ad NA0 1 2 3 4 S 6 7 6 0 10 11 12 13 14 15 16 17 18 19 2D 21 22 23 24 2S .2 27 28 20 30 31 32 33 34 35 36DmYS Sft~er SCRAMNote: The tables and figures here rpresent historical aalysis results for the Rev. 3 calculatior.

Current design analysis is based on results reported inAttachment G for a 102'F plant intake temperature limit, and Attachment H for a 1047F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 52Fig. 7.7, Case 0609: UHS LOCA DrawdownFirst 30 Days of Updated Worst 36-Day Temperature Period(d -in, t a0900 hrs, T1 = 97J5F)690.25UP440 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1s 16 17 18 19 2D 21 22 23 24 25 26 27 28 29 30( Dap after SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 1020F plant intake temperature limit, and Attachment H for a 104'F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 53Fig. 7.8, Case 06e: UHS LOCA Temperature Transient Updated Worst 304Day Evaporation Period(d = 6 in, t = 1200 hrs, T1 = 97AF)110"t100I* 1000 f 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Days after SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 102'F plant intake temperature limit, and Attachment H for a 104OF plant intake temperature limit. TFhese results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 54Fig. 7.9, Case 06e: UHS LOCA DrawdownUpdated Worst 30-Day Evaporation Period(d a 6 in, t -1200 hrs, Ti = 97.4F)69025C20j0 t 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 28 27 28 20 30Dap aft SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 102'1F plant intake temperature limit, and Attachment H for a 104°F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 55Fig. 7.10, Case 1809: UHS LOCA Tem-perature Transient Updated Worst 36-Day Temperature Period(d = 18 in, t = 0900 hrs, T1 = 96.5F)L- 1300-D 120CD 110ECDF 1001DCz4b" 90CCca 8700 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272B2930313233343536 Days after SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 102'F plant intake temperature limit, and Attachment H for a 104'F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 56Fig. 7.11, Case 1809; UKS LOCA DrawdownFirst 30 Days of Updated Worst 36-Day Temperature Period(d = 16 In, t= 0900 hrs, Ti = 96SUF)C.r0 2 3 4 5 e 7 8 9 10 11 12 13 14 1 .817 1812D 21 22'23 24 2C 2A 27 M 20 3D*nA Note: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 1027F plant intake temperature limit, and Attachment H for a 104*F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 57Fig. 7.12, Case 18e: UHS LOCA Temperature Transient Updated Worst 30-Day Evaporation Period(d : 18 In, t = 1200 hrs, Ti , 96.8F)CLD0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2 21 22 23 24 25, 25 27 25 29 30Days after SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 102'F plant intake temperature limit, and Attachment H for a 104*F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 58Fig. 7.13, Case IBe: UNS LOCA DrawdownUpdated Worst 30-Cay Evaporation Period(d a 18 in, t 1200 hrs, TI = 96.8F)IIUw20 1 2 3 4 5 6 T 8 9 10 11 12 13 14 15 16 IT 18 19 20 21 22 23 24 25 28 27 28 29 30Days after SCRAMNote: The tables and figures here represent historical analysis results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 1020F plant intake temperature limit, and Attachment H for a 104*F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM.

CALCULATION NO. L-002457REVISION NO. 8PAGE NO. 59LAST PAGE OF MAIN BODYFigure 7.14UBS Heat Load Followrng LOCAQ00.0.J.800.0700.0600.0-E~500.0400.0z2300.0200.0100.0-0. 1 ....- ......-. I I .0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 28 27 28 29 30 31 32 33 34 35 38Das altw SCRAMNote: The tables and figures here represent historical analysLs results for the Rev. 3 calculation.

Current design analysis is based on results reported inAttachment G for a 102-F plant intake temperature limit, and Attachment H for a 1047F plant intake temperature limit. These results do, however, providethe basis for the controlling time for the start of the limiting transient, 9 AM. FINAL PAGE CALCULATION NO. L-002457REVISION NO. 8ATTACHMENT APAGE Al OF A22Attachment AUIHSAV(;

FilesUHSAVG10 Version 1.0 -Sargent & Lundy Program No. 03.7.642-1.0 User 0J2069 on PC5121 Tuesday, March 7, 2000 Time: 15:05:48Controlled Files:Drive V: = SNL1 SYS3: \Volume in drive V is SYS3[Base] \MAXDAT.

EXE(Base] \UHSAVG2.

EXE[Base] \WRITE.EXE

[Base] \UHSAVG$.BAT 08-11-1997 19:5608-11-1997 19:5508-20-1997 10:4510-06-1997 16:29ps489661 bin26,080,178 12-08-974: 12puhsavgOuhsavgl8uhsavg6msg0msgl8-msg6wO000w0300w0600w0900w1200w1200ew1500w1800w2100inpinpinpsymsymsyminpinpinpinpinpinpinpinpinp1411421414,5534,5534,55303-07-0003-07-0003-07-0003-07-0003-07-0003-07-0003-02-0003-02-0003-02-0003-02-0003-02-0003-08-0003-02-0003-02-0003-02-002: 35p2:35p2 :35p3:03p3 :08p3 :06p11: 10a11 : 06a11: Ila11: 05a11: 00a10:31a11: 09a11: 10a11: 10a301301301301301312301301301PROJECT NO. 11333-297 ATTACHMENT APAGE A2 OF A22CALCULATION NO. L-002457REVISION NO. 8MSGO. SYM013119480705.

17526184 .EO686.04082402402880083 .8397.464.9C: \COMED\LASALLE\WEATHER\PS489661

.BINPROJECT NO. 11333-297 ATTACHMENT APAGE A3 OF A22CALCULATION NO. L-002457REVISION NO. 8MSG6.SYM013119480705.

17526184.E0686.04082402402880082.9997.423.5C:\COMED\LASALLE\WEATHER\PS489661.BIN PROJECT NO. 11333-297 ATTACHMENT APAGE A4 OF A22CALCULATION NO. L-002457REVISION NO. 8MSG18. SYM013119480705.

17526184.E0686.04082402402880081.3597.341.4C:\COMED\LASALLE\WEATHER\PS489661.BIN PROJECT NO. 11333-297 ATTACHMENT APAGE A5 OF A22CALCULATION NO. L-002457REVISION NO. 8SARGENT & LUNDY LLCUHSAVG PROGRAMULTIMATE HEAT SINK ANALYSISDETERMINATION OF DESIGN TEMPERATURE AND WATER LOSS PERIODSINPUT DATA COMMON TO BOTH TOWER AND POND:VALIDATION OPTION (CREATE AN OUTPUTFILE WITH TEMPERATURE (OF POND ORTOWER AIR), AND WATER LOSS VALUES,WRITTEN ONCE PER 3-HOUR PERIOD);NO=0, YES=2 = 0IUHS (SELECTION OPTION; 1=POND, 2=TOWER)

= 1NUMPER (NUMBER OF SUB-PERIODS WITHIN THE36-DAY COMBINED TEMPERATURE PERIOD -SHOULD ALWAYS BE=3) -3LPLIM (NUMBER OF 3-HR PERIODS OVERWHICH DATA IS AVERAGED

-SHOULDALWAYS BE SET TO 1) -1SDATE (STARTING DATE FOR THE UHSAVGPROCESSING

-6 DIGITS COMBINING YEAR,MONTH, AND DAY) = 19480705.

IDYLIM (THE TOTAL NUMBER OF DAYS TO BEPROCESSED)

= 17526QLOAD (HEAT REJECTED BY THE POWERSTATION -AVERAGE OVER THE PERIODSPECIFIED IN REG. GUIDE 1.27 -BTU/HR) = 184000000.00 FLOW (POWER STATION ESSENTIAL SERVICEWATER FLOW, PLUS ANY ADDITIONAL FLOW -CFS) -86.00I2LIM (THE NUMBER OF 3-HR INTERVALS IN EACH OF 5 DIFFERENT SUB-PERIODS THAT ARE IDENTIFIED

-40 8 240 240288INPUT DATA SPECIFIC TO PONDS ONLY:IPCP (OPTION FOR INCLUSION OF PRECIPIN WATER LOSS CALCULATIONS (O=NO,1=YES)) = 0EXTRA (EXTRA RUNOFF AREA FOR INCLUSION OF PRECIP IN WATER LOSSPROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A6 OF A22A IAREA OF POND UIHS -ACRES) = 1.3TI (INITIAL POND TEMPERATURE SET BYTHE USER -DEG F) = 97.00VI (INITIAL POND VOLUME SET BY THEUSER -ACRE-FT)

= 464.90NAMES OF EXTERNAL FILESUSED FOR THIS RUN OF UHSAVG:INPUT TEXT FILE WITH USER OPTION INPUT:INPUT BINARY FILE WITH WEATHER DATA:C:\COMED\LASALLE\WEATHER\PS489661.BIN OUTPUT TEXT FILE WITH RESULTS:

MSGO.SYMOUTPUT TEXT FILE WITH VALIDATION DATA:STARTING DATE WAS FOUNDAND PROCESSING WAS STARTED.PROCESSING WAS COMPLETED, AND DESIGNWEATHER PERIODS WERE SELECTED.

THESEPERIODS ARE LISTED BELOW, AFTER THEDEFINITIONS.

DEFINITION OF "AVERAGE TEMPERATURE":

FOR A POND, THE "AVERAGE TEMPERATURE" FOR THE PERIOD REFERS TO THE AVERAGEBULK TEMP OF THE POND WATER, WHICH ISASSUMED TO BE THOROUGHLY MIXED.FOR A TOWER, THE "AVERAGE TEMPERATURE" FORTHE PERIOD REFERS TO THE AVERAGE WET BULBTEMPERATURE.

DEFINITION OF "AVERAGE EVAPORATION":

"AVERAGE EVAPORATION" IN THE CASE OFEITHER A POND OR A TOWER REFERS TO THEAVERAGE EVAPORATIVE WATER LOSS FROM THECOOLING SYSTEM DURING THE PERIOD.DEFINITION OF THE DECIMAL PORTION OFTHE START AND END DATES FOR EACHSELECTED WORST-CASE PERIOD:THE DECIMAL PORTION IDENTIFIES ONE OFTHE EIGHT 3-HOUR PERIODS OF THAT DAY.FOR EXAMPLE, "I" IS THE FIRST 3-HOURPERIOD, AND "8" IS THE LAST 3-HR PERIODPROJECT NO. 11333-297 ATTACHMENT AREVISION NO. 8 PAGE A7 OF A22CALCULATION NO. L-002457THE LENGTH OF THE FIRST COMPONENT OF THE COMBINED TEMPERATURE PERIODWAS: 5.000 DAYSAVERAGE TEMPERATURE WAS: 93.413 DEG FPERIOD STARTS ON 19950712.4 PERIOD FINISHES ON 19950717.3 THE LENGTH OF THE SECOND COMPONENT OF THE COMBINED TEMPERATURE PERIODWAS: 1.000 DAYSAVERAGE TEMPERATURE WAS: 94.699 DEG FPERIOD STARTS ON 19950715.5 PERIOD FINISHES ON 19950716.4 THE LENGTH OF THE THIRD COMPONENT OF THE COMBINED TEMPERATURE PERIODWAS: 30.000 DAYSAVERAGE TEMPERATURE WAS: 89.138 DEG FPERIOD STARTS ON 19830710.6 PERIOD FINISHES ON 19830809.5 THE LENGTH OF THE EVAPORATION PERIOD WAS: 30.000 DAYSAVERAGE EVAPORATION WAS: 1.859 CFSPERIOD STARTS ON 19540618.5 PERIOD FINISHES ON 19540718.4 THE LENGTH OF THE WORST-CASE CONSECUTIVE TEMPERATURE PERIODWAS: 36.000 DAYSAVERAGE TEMPERATURE WAS: 89.060 DEG FPERIOD STARTS ON 19950726.7 PERIOD FINISHES ON 19950831.6 PROJECT NO. 11333-297 ATTACHMENT APAGE A8 OF A22CALCULATION NO. L-002457REVISION NO. 8File: MSG6.SYMSARGENT & LUNDY LLCUHSAVG PROGRAMULTIMATE HEAT SINK ANALYSISDETERMINATION OF DESIGN TEMPERATURE AND WATER LOSS PERIODSINPUT DATA COMMON TO BOTH TOWER AND POND:VALIDATION OPTION (CREATE AN OUTPUTFILE WITH TEMPERATURE (OF POND ORTOWER AIR), AND WATER LOSS VALUES,WRITTEN ONCE PER 3-HOUR PERIOD);NO=0, YES=1 = 0IUHS (SELECTION OPTION; 1=POND, 2=TOWER)

= 1NUMPER (NUMBER OF SUB-PERIODS WITHIN THE36-DAY COMBINED TEMPERATURE PERIOD -SHOULD ALWAYS BE=3) 3LPLIM (NUMBER OF 3-HR PERIODS OVERWHICH DATA IS AVERAGED

-SHOULDALWAYS BE SET TO 1) 1SDATE (STARTING DATE FOR THE UHSAVGPROCESSING

-6 DIGITS COMBINING YEAR,MONTH, AND DAY) = 19480705.

IDYLIM (THE TOTAL NUMBER OF DAYS TO BEPROCESSED)

-17526QLOAD (HEAT REJECTED BY THE POWERSTATION -AVERAGE OVER THE PERIODSPECIFIED IN REG. GUIDE 1.27 -BTU/HR) -184000000.00 FLOW (POWER STATION ESSENTIAL SERVICEWATER FLOW, PLUS ANY ADDITIONAL FLOW -CFS) -86.00I2LIM (THE NUMBER OF 3-HR INTERVALS IN EACH OF 5 DIFFERENT SUB-PERIODS THAT ARE IDENTIFIED

-40 8 240 240288INPUT DATA SPECIFIC TO PONDS ONLY:IPCP (OPTION FOR INCLUSION OF PRECIPIN WATER LOSS CALCULATIONS (0=NO,I=YES)) = 0EXTRA (EXTRA RUNOFF AREA FOR INCLUSION PROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A9 OF A22OF PRECIP IN WATER LOSSCALCULATIONS

-(ACRES))

= .00A (AREA OF POND UHS -ACRES) = 82.99TI (INITIAL POND TEMPERATURE SET BYTHE USER -DEG F) = 97.00VI (INITIAL POND VOLUME SET BY THEUSER -ACRE-FT)

= 423.50NAMES OF EXTERNAL FILESUSED FOR THIS RUN OF UHSAVG:INPUT TEXT FILE WITH USER OPTION INPUT:INPUT BINARY FILE WITH WEATHER DATA:C:\COMED\LASALLE\WEATHER\PS489661.BIN OUTPUT TEXT FILE WITH RESULTS:

MSG6.SYMOUTPUT TEXT FILE WITH VALIDATION DATA:STARTING DATE WAS FOUNDAND PROCESSING WAS STARTED.PROCESSING WAS COMPLETED, AND DESIGNWEATHER PERIODS WERE SELECTED.

THESEPERIODS ARE LISTED BELOW, AFTER THEDEFINITIONS.

DEFINITION OF "AVERAGE TEMPERATURE":

FOR A POND, THE "AVERAGE TEMPERATURE" FOR THE PERIOD REFERS TO THE AVERAGEBULK TEMP OF THE POND WATER, WHICH ISASSUMED TO BE THOROUGHLY MIXED.FOR A TOWER, THE "AVERAGE TEMPERATURE" FORTHE PERIOD REFERS TO THE AVERAGE WET BULBTEMPERATURE.

DEFINITION OF "AVERAGE EVAPORATION":

"AVERAGE EVAPORATION" IN THE CASE OFEITHER A POND OR A TOWER REFERS TO THEAVERAGE EVAPORATIVE WATER LOSS FROM THECOOLING SYSTEM DURING THE PERIOD.DEFINITION OF THE DECIMAL PORTION OFTHE START AND END DATES FOR EACHSELECTED WORST-CASE PERIOD:THE DECIMAL PORTION IDENTIFIES ONE OFTHE EIGHT 3-HOUR PERIODS OF THAT DAY.FOR EXAMPLE, "1" IS THE FIRST 3-HOURPROJECT NO. 11333-297 ATTACHMENT APAGE A10 OF A22CALCULATION NO. L-002457REVISION NO. 8OF THE DAY.THE LENGTH OF THE FIRST COMPONENT OF THE COMBINED TEMPERATURE PERIODWAS: 5.000 DAYSAVERAGE TEMPERATURE WAS: 93.565 DEG FPERIOD STARTS ON 19950712.2 PERIOD FINISHES ON 19950717.1 THE LENGTH OF THE SECOND COMPONENT OF THE COMBINED TEMPERATURE PERIODWAS: 1.000 DAYSAVERAGE TEMPERATURE WAS: 94.791 DEG FPERIOD STARTS ON 19950715.5 PERIOD FINISHES ON 19950716.4 THE LENGTH OF THE THIRD COMPONENT OF THE COMBINED TEMPERATURE PERIODWAS: 30.000 DAYSAVERAGE TEMPERATURE WAS: 89.208 DEG FPERIOD STARTS ON 19830710.5 PERIOD FINISHES ON 19830809.4 THE LENGTH OF THE EVAPORATION PERIOD WAS: 30.000 DAYSAVERAGE EVAPORATION WAS: 1.845 CFSPERIOD STARTS ON 19540618.5 PERIOD FINISHES ON 19540718.4 THE LENGTH OF THE WORST-CASE CONSECUTIVE TEMPERATURE PERIODWAS: 36.000 DAYSAVERAGE TEMPERATURE WAS: 89.104 DEG FPERIOD STARTS ON 19950726.7 PERIOD FINISHES ON 19950831.6 PROJECT NO. 11333-297 ATTACHMENT APAGE All OF A22CALCULATION NO. L-002457REVISION NO. 8File: MSGI8.SYM SARGENT & LUNDY LLCUHSAVG PROGRAMULTIMATE HEAT SINK ANALYSISDETERMINATION OF DESIGN TEMPERATURE AND WATER LOSS PERIODSINPUT DATA COMMON TO BOTH TOWER AND POND:VALIDATION OPTION (CREATE AN OUTPUTFILE WITH TEMPERATURE (OF POND ORTOWER AIR), AND WATER LOSS VALUES,WRITTEN ONCE PER 3-HOUR PERIOD);NO=0, YES=1 = 0IUHS (SELECTION OPTION; 1=POND, 2=TOWER)

= 1NUMPER (NUMBER OF SUB-PERIODS WITHIN THE36-DAY COMBINED TEMPERATURE PERIOD -SHOULD ALWAYS BE=3) 3LPLIM (NUMBER OF 3-HR PERIODS OVERWHICH DATA IS AVERAGED

-SHOULDALWAYS BE SET TO1) 1SDATE (STARTING DATE FOR THE UHSAVGPROCESSING

-6 DIGITS COMBINING YEAR,MONTH, AND DAY) = 19480705.

IDYLIM (THE TOTAL NUMBER OF DAYS TO BEPROCESSED)

-17526QLOAD (HEAT REJECTED BY THE POWERSTATION -AVERAGE OVER THE PERIODSPECIFIED IN REG. GUIDE 1.27 -BTU/HR) 184000000.00 FLOW (POWER STATION ESSENTIAL SERVICEWATER FLOW, PLUS ANY ADDITIONAL FLOW -CFS) -86.00I2LIM (THE NUMBER OF 3-HR INTERVALS IN EACH OF 5 DIFFERENT SUB-PERIODS THAT ARE IDENTIFIED

-40 8 240 240 288INPUT DATA SPECIFIC TO PONDS ONLY:IPCP (OPTION FOR INCLUSION OF PRECIPIN WATER LOSS CALCULATIONS (0=NO,1=YES)) = 0EXTRA (EXTRA RUNOFF AREA FOR INCLUSION OF PRECIP IN WATER LOSSPROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A12 OF A22A (AREA OF POND UHS -ACRES) = 81.35TI (INITIAL POND TEMPERATURE SET BYTHE USER -DEG F) = 97.00VI (INITIAL POND VOLUME SET BY THEUSER -ACRE-FT)

= 341.40NAMES OF EXTERNAL FILESUSED FOR THIS RUN OF UHSAVG:INPUT TEXT FILE WITH USER OPTION INPUT:INPUT BINARY FILE WITH WEATHER DATA:C:\COMED\LASALLE\WEATHER\PS489661.BIN OUTPUT TEXT FILE WITH RESULTS:

MSG18.SYM OUTPUT TEXT FILE WITH VALIDATION DATA:STARTING DATE WAS FOUNDAND PROCESSING WAS STARTED.PROCESSING WAS COMPLETED, AND DESIGNWEATHER PERIODS WERE SELECTED.

THESEPERIODS ARE LISTED BELOW, AFTER THEDEFINITIONS.

DEFINITION OF "AVERAGE TEMPERATURE":

FOR A POND, THE "AVERAGE TEMPERATURE" FOR THE PERIOD REFERS TO THE AVERAGEBULK TEMP OF THE POND WATER, WHICH ISASSUMED TO BE THOROUGHLY MIXED.FOR A TOWER, THE "AVERAGE TEMPERATURE" FORTHE PERIOD REFERS TO THE AVERAGE WET BULBTEMPERATURE.

DEFINITION OF "AVERAGE EVAPORATION":

"AVERAGE EVAPORATION" IN THE CASE OFEITHER A POND OR A TOWER REFERS TO THEAVERAGE EVAPORATIVE WATER LOSS FROM THECOOLING SYSTEM DURING THE PERIOD.DEFINITION OF THE DECIMAL PORTION OFTHE START AND END DATES FOR EACHSELECTED WORST-CASE PERIOD:THE DECIMAL PORTION IDENTIFIES ONE OFTHE EIGHT 3-HOUR PERIODS OF THAT DAY.FOR EXAMPLE, "1" IS THE FIRST 3-HOURPERIOD, AND "8" IS THE LAST 3-HR PERIODPROJECT NO. 11333-297 ATTACHMENT APAGE A13 OF A22CALCULATION NO. L-002457REVISION NO. 8THE LENGTH OF THE FIRST COMPONENT OF THE COMBINED TEMPERATURE PERIODWAS: 5.000 DAYSAVERAGE TEMPERATURE WAS: 93.865 DEG FPERIOD STARTS ON 19950712.1 PERIOD FINISHES ON 19950716.8 THE LENGTH OF THE SECOND COMPONENT OF THE COMBINED TEMPERATURE PERIODWAS: 1.000 DAYSAVERAGE TEMPERATURE WAS: 94.935 DEG FPERIOD STARTS ON 19950715.5 PERIOD FINISHES ON 19950716.4 THE LENGTH OF THE THIRD COMPONENT OF THE COMBINED TEMPERATURE PERIODWAS: 30.000 DAYSAVERAGE TEMPERATURE WAS: 89.334 DEG FPERIOD STARTS ON 19830710.5 PERIOD FINISHES ON 19830809.4 THE LENGTH OF THE EVAPORATION PERIOD WAS: 30.000 DAYSAVERAGE EVAPORATION WAS: 1.820 CFSPERIOD STARTS ON 19540618.5 PERIOD FINISHES ON 19540718.4 THE LENGTH OF THE WORST-CASE CONSECUTIVE TEMPERATURE PERIODWAS: 36.000 DAYSAVERAGE TEMPERATURE WAS: 89.191 DEG FPERIOD STARTS ON 19950726.5 PERIOD FINISHES ON 19950831.4 PROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A14 OF A220MSG-WRIT.

SYMC:\WAKELAND\LASALLE\PS489661.BIN TCOMOO.BIN TOO.BINE30.BINTEXT.TXT1995 7 12 1 1995 7 16 81995 7 15 5 1995 7 16 41983 7 10 6 1983 8 9 51995 7 15 1 1995 8 19 81954 6 18 4 1954 7 18 30PROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A15 OF A22MSG-WRIT.

SYMC:\WAKELAND\LASALLE\PS489661.BIN TCOM03.BIN T03.BINE30.BINTEXT.TXT1995 7 12 2 1995 7 17 11995 7 15 5 1995 7 16 41983 7 10 6 1983 8 9 51995 7 15 2 1995 8 20 11954 6 18 4 1954 7 18 3PROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A16 OF A220MSG-WRIT.SYM C:\WAKELAND\LASALLE\PS489661.BIN TCOM06.BIN T06.BINE30.BINTEXT.TXT1995 7 12 3 1995 7 17 21995 7 15 5 1995 7 16 41983 7 10 6 1983 8 9 51995 7 15 3 1995 8 20 21954 6 18 4 1954 7 18 3PROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A17 OF A220MSG-WRIT.

SYMC:\WAKELAND\LASALLE\PS489661.BIN TCOM09.BIN T09.BINE30.BINTEXT.TXT1995 7 12 4 1995 7 17 31995 7 15 5 1995 7 16 41983 7 10 6 1983 8 9 51995 7 15 4 1995 8 20 31954 6 18 4 1954 7 18 3PROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A18 OF A220MSG-WRIT.SYM C:\WAKELAND\LASALLE\PS489661.BIN TCOM12.BIN T12.BINE30.BINTEXT.TXT1995 7 12 5 1995 7 17 41995 7 15 5 1995 7 16 41983 7 10 6 1983 8 9 51995 7 15 5 1995 8 20 41954 6 18 4 1954 7 18 3PROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A19 OF A220MSG-WRIT.

SYMC: \WAKELAND\LASALLE\PS489661.

BINTCOM1 5.BINT15. BINE30.BINTEXT.TXT1995 7 12 6 1995 7 17 51995 7 15 5 1995 7 16 41983 7 10 6 1983 8 9 51995 7 15 6 1995 8 20 51954 6 18 4 1954 7 18 3PROJECT NO. 11333-297 ATTACHMENT ACALCULATION NO. L-002457 REVISION NO. 8 PAGE A20 OF A220[iMSG-WRIT.

SYMC: \WAKELAND\LASALLE\PS489661.BIN TCOM18.BIN T18 .BINE30.BINTEXT. TXT1995 7 12 7 1995 7 17 61995 7 15 5 1995 7 16 41983 7 10 6 1983 8 9 51995 7 15 7 1995 8 20 61954 6 18 4 1954 7 18 3PROJECT NO. 11333-297 ATTACHMENT APAGE A21 OF A22CALCULATION NO. L-002457REVISION NO. 80MSG-WRIT.SYM C:\WAKELAND\LASALLE\PS489661

.BINTCOM21.BIN T21.BINE30.BINTEXT.TXT1995 7 12 8 1995 7 17 71995 7 15 5 1995 7 16 41983 7 10 6 1983 8 9 51995 7 15 8 1995 8 20 71954 6 18 4 1954 7 18 3PROJECT NO. 11333-297 CALCULATION NO. L-002457REVISION NO. 8ATTACHMENT APAGE A22 OF A22MSGWRT.SYM C:\COMED\LASALLE\WEATHER\PS489661.BIN TCOMUAVG.BIN T36UAVG.BIN E3012.BIN TEXT.TXT1995 7 12 2 1995 7 171995 7 15 5 1995 7 161983 7 10 6 1983 8 91995 7 26 7 1995 8 31145641954 6 18 5 19547 18PROJECT NO. 11333-297 ATTACHMENT BPAGE B1 OF B358CALCULATION NO. L-002457REVISION NO. 8Attachment BLAXET-PC OutputLAKET10 Version 1.0User 0H9449 on PC5407User 0J2069 on PC5121Controlled Files:-Sargent & Lundy Program No. 03.7.292-1.0 Wednesday, February 23, 2000 Time: 14:12:20Drive V: = SNLISYS3:

\Volume in drive V is SYS3[Base] \PIA8586

.BIN[Base] \LPRINT.

EXS[Base] \BRAUHS3A.BIN

[Base] \LAKET$.BAT

[Base] \BRAUHS3A.DAT (Base] \LAKET.EXE

[Base] \TEST.DAT

[Base] \LAKETRUN.BAT 03-31-1992 08-03-1995 08-01-1995 07-02-1996 08-02-1995 10-27-1997 11-23-1992 10-24-1997 16:0411:4221:0611:4916:5708:4514 :0013:27LAKET Plot Program -Sargent & Lundy Program No. 03.7.292-1.2 User 0H9449 on PC5407 Wednesday, February 23, 2000User 0J2069 on PC5121Directory of C:\WAKELAND\LASALLE c0000c0003c0006c0009comO009coma012comO015c0018c0021c0600c0603c0606com0609com0612com0615c0618c0621c1800c1803c1806c1809com1809com1812com1815c1818c1821cOOec06ecl8edatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdatdat2,3232,3212,3222,3222,3262,3262,3262,3232,3232,8872,8852,8862,8892, 8902,8902,8872,8872,9292,9272,9282,9282,9322,9312,9322,9292,9292,5952,5972,64003-03-0003-03-0003-03-0003-03-0003-07-0003-06-0003-06-0003-03-0003-03-0003-03-0003-03-0003-03-0003-06-0003-06-0003-06-0003-03-0003-03-0003-03-0003-03-0003-03-0003-03-0003-07-0003-06-0003-06-0003-03-0003-03-0003-08-0003-08-0003-08-002: 08p2: 31p2:54p2:09p5:29p11: 19a1: 01p2: 10p2: lip2:14p2:35p2: 59p10:24a11:21a11:23a2: lip2: lip2: 15p2:46p3 : 08p3: 13p5:34p11:21a1:09p2: 17p2: 17p10 :45a10:53a11: 15aPROJECT NO. 11333-297 ATTACHMENT BPAGE B2 OF B358CALCULATION NO. L-002457Directory of C:\WAKELAND\LASALLE REVISION NO. 8e3012toot03t06t09t12tist18t21tcom00tcom03tcom06tcom09tcoml2tcoml5tcom18tcom2lbinbinbinbinbinbinbinbinbinbinbinbinbinbinbinbinbin44,64253,57053,57053,57053,57053,57053,57053,57053,57053,57053,57053,57053,57053,57053,57053,57053,57003-08-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0003-02-0010: 38a1:44p1:45p1: 46p1:47p1:49p1:50p1: 52p1:53p1:44p1:45p1:46p1:47p1:49p1:50p1: 52p1: 53pPROJECT NO. 11333-297 ATTACHMENT BPAGE B3 OF B358CALCULATION NO. L-002457Program :LAKET-PC Number : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 1Date : 03/03/2000 Time : 14:18:14.18 Case 0000: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 0000; power upra1234507010011690.83 .8382.1580.5578.9677.3329.701100.0R/IS/I080500200.2690.464.9381.9300.5220.8142 .671.7095.51 15500.1.75.4573.9472.5071.0669.6026.7306418.4343.7270.5198.7128.465.678999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913 .8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0786.0PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B4 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Date 03/03/2000 Time 14:18:14.18 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B5 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Date 03/03/2000 Time 14:18:14.18 9.549.549.549.549.549.549.549.409.199. 199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B6 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time 14:18:14.24 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B7 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Date : 03/03/2000 Time 14:18:14.24 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498 .498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B8 OF B358CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 199?REVISION NO. 8Date : 03/03/2000 Time 14:18:14.29 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B9 OF B358Number : 03.7.292-1.0 0 Date : 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time : 14:18:14.79 Case 0000: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 0000; power upraRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : I CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 83.830 464.900 75.450 418.400689.000 82.150 381.900 73.940 343.700688.000 80.550 300.500 72.500 270.500687.000 78.960 220.800 71.060 198.700686.000 77.330 142.600 69.600 128.400685.000 29.700 71.700 26.730 65.600PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 100.00 95.50WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B10 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Date : 03/03/2000 Time : 14:18:14.79 Case 0000: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.0F

@ 0000; power upraFPLANT70100 -80500 R/I86.000TPRIS870100 -80500 S/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010 .50010 .50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE Bll OF B358CALCULATION NO. L-002457REVISION NO. 88.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208,2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B12 OF B358Number 03.7.292-1.0 0 Date : 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time 14:18:15.12 Case 0000: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.0F

@ 0000; power upraSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.18TOTAL EVAP (CFS) .00 -1.39 -1.24 -1.37NATURAL EVAP (CFS) 00 -.76 -.69 -.75FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.82 92.57 89.34LAKE INLET TEMP (F) .00 99.72 101.75 100.01LAKE OUTLET TEMP (F) .00 89.96 93.55 90.46TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.3 89.1LAKE INLET TEMP (F) 126.0 109.0 99.3LAKE OUTLET TEMP (F) 98.8 96.8 90.2PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B13 OF B358Number 03.7.292-1.0 0 Date : 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time : 14:18:15.12 Case 0000: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.0F

@ 0000; power upraCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.18TOTAL EVAP (CFS) .00 -1.39 -1.24 -1.37NATURAL EVAP (CFS) .00 -.76 -.69 -.75FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.82 92.57 89.34LAKE INLET TEMP (F) .00 99.72 101.75 100.01LAKE OUTLET TEMP (F) .00 89.96 93.55 90.46TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.3 89.1LAKE INLET TEMP (F) 126.0 109.0 99.3LAKE OUTLET TEMP (F) 98.8 96.8 90.2PROJECT NO. 11333-297 CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B14 OF B358REVISION NO. 8Date : 03/03/2000 Time 14:18:15.12 Case 0000: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 0000; power upraTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

LAKE SEEPAGE (CFS) -.16 8051900)TOTAL EVAP (CFS) -.25 8041900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) -.25 8041900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 97.62 7011900)LAKE INLET TEMP (F) 133.76 7011900)LAKE OUTLET TEMP (F) 99.39 7011900)TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.54-3.55-1.67.00.00.00.00.00688.66.0082.6993.3584.267011900)7031900)7031900)7021900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7071900)7261900)7071900)-.18-1.37-.75-.62.00.00.00.00.00689.28.0089.34100.0190.46-1.26223E+01

-9.78239E+01

-5.38859E+01

-4.39380E+01 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.00000E+00 0.OOOOOE+00 4.92180E+04 0.OOOOOE+00 6.37916E+03 7.14096E+03 6.45926E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0 95.3 89.1126.0 109.0 99.398.8 96.8 90.2PROJECT NO. 11333-297 ATTACHMENT BPAGE B15 OF B358CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Date : 03/03/2000 Time : 14:31:48.34 Case 0003: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=99.3F G 0300; power uprat1234507010011690.83.8382.1580.5578.9677.3329.70199.3R/IS/I080500200.2690.464.9381.9300.5220.8142.671.7094 .81 15500.1.75.4573.9472.5071.0669.6026.7306418.4343.7270.5198.7128.465.678999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013 .3013 .2412 .7312 .7312.5712.4312 .2412 .0212 .0212.0212.0212.0122.4911.4911.4911.4911.4911.4911.4911.4911.0911.0786.0PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B16 OF B358CALCULATION NO. L-002457Number 03.7,292-1.0 0Created Mon Oct 27 08:45:58 1997Date : 03/03/2000 Time : 14:31:48.40 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010 .5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B17 OF B358CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997Date : 03/03/2000 Time : 14:31:48.40 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B18 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time 14:31:48.40 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B19 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time : 14:31:48.40 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B20 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Date : 03/03/2000 Time : 14:31:48.45 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B21 OF B358Number 03.7.292-1.0 0 Date 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 14:31:48.73 Case 0003: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=99.3F

@ 0300; power upratRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 83.830 464.900 75.450 418.400689.000 82.150 381.900 73.940 343.700688.000 80.550 300.500 72.500 270.500687.000 78.960 220.800 71.060 198.700686.000 77.330 142.600 69.600 128.400685.000 29.700 71.700 26.730 65.600PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 99.30 94.80WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B22 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time 14:31:48.73 Case 0003: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=99.3F

@ 0300; power upratFPLANT70100 -80500 R/I86.000TPRISE70100 -80500 S/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909 .1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014 .97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409,5409.5409.1909.1909.1909. 1909. 1909. 1909. 1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B23 OF B358CALCULATION NO. L-002457REVISION NO. 88.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B24 OF B358Number 03.7.292-1.0 0 Date : 03/03/2000 Created :Mon Oct 27 08:45:58 1997 Time : 14:31:48.89 Case 0003: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=99.3P 0 0300; power upratSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18 -.16 -.18TOTAL EVAP (CFS) .00 -1.39 -1.27 -1.37NATURAL EVAP (CFS) .00 -.76 -.71 -.76FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.80 92.61 89.33LAKE INLET TEMP (F) .00 99.71 101.84 100.01LAKE OUTLET TEMP (F) .00 89.95 93.64 90.46------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.3 89.1LAKE INLET TEMP (F) 125.0 109.0 99.3LAKE OUTLET TEMP (F) 99.0 96.8 90.2PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B25 OF B358Number 03.7.292-1.0 0 Date 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time : 14:31:48.89 Case 0003: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=99.3F

@ 0300; power upratCUMULATIVE SEASONAL SUMMARY:

SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.18TOTAL EVAP (CFS) .00 -1.39 -1.27 -1.37NATURAL EVAP (CFS) .00 -.76 -.71 -.76FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.80 92.61 89.33LAKE INLET TEMP (F) .00 99.71 101.84 100.01LAKE OUTLET TEMP (F) .00 89.95 93.64 90.46------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.3 89.1LAKE INLET TEMP (F) 125.0 109.0 99.3LAKE OUTLET TEMP (F) 99.0 96.8 90.2PROJECT NO. 11333-297 ATTACHMENT BPAGE B26 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 199?REVISION NO. 8Date : 03/03/2000 Time 14:31:48.89 Case 0003: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=99.3F

@ 0300; power upratTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

....................................................................................................

LAKE SEEPAGE (CFS) -.16 8051900)TOTAL EVAP (CFS) -.25 8041900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) -.25 8041900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 690.00 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 97.60 7011900).

LAKE INLET TEMP (F) 133.32 7011900)LAKE OUTLET TEMP (F) 99.94 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%......................................................

-.20-4.51-3.55-1.70.00.00.00.00.00688.66.0082.6993.5784.107011900)7031900)7031900)7021900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7071900)7261900)7071900)-.18-1.37-.76-.62.00.00.00.00.00689.28.0089.33100.0190.46-1.26209E+01

-9.78949E+01

-5.39557E+01

-4 .39392E+01 0 .OOOOOE+00 0 OOOOOE+00 0 OOOOOE+00 0 OOOOOE+00 0 OOOOOE+00 4.92179E+04 0.00000E+00 6.37839E+03 7.14110E+03 6.45933E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0125 .099.095.3109.096.889.199.390.2PROJECT NO. 11333-297 ATTACHMENT BPAGE B27 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time : 14:54:23.63 Case 0006: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.6F

@ 0600; power uprat1234578999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0707010011690.83.8382.1580.5578.9677.3329.70198.6f/Is/I080500200.2690.464.9381.9300.5220.8142.671.7094 .186.015500.1.75.4573 .9472.5071.0669.6026.7306418.4343.7270.5198.7128.465.6PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B28 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Date : 03/03/2000 Time : 14:54:23.68 11.0711.0711.0710.8710 .8610 .8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B29 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997Date 03/03/2000 Time 14:54:23.68 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199 .199 .199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B30 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time 14:54:23.68 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858 .728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B31 OF B358CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Date : 03/03/2000 Time 14:54:23.68 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B32 OF B358CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time : 14:54:23.79 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B33 OF B358Number : 03.7.292-1.0 0 Date 03/03/2000 Created :Mon Oct 27 08:45:58 1997 Time : 14:54:24.23 Case 0006: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.6F

@ 0600; power upratRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EPP VOLUME690.000 83.830 464.900 75.450 418.400689.000 82.150 381.900 73.940 343.700688.000 80.550 300.500 72.500 270.500687.000 78.960 220.800 71.060 198.700686.000 77.330 142.600 69.600 128.400685.000 29.700 71.700 26.730 65.600PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 98.60 94.10WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B34 OF B358CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time 14:54:24.23 Case 0006: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.6F

@ 0600; power upratFPLANT70100 -80500 R/I86.000TPRISE70100 -80500 S/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012 .02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B35 OF B358CALCULATION NO. L-002457REVISION NO. 88.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208,2208.220PROJECT NO. 11333-297 CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE 636 OF 6358Date : 03/03/2000 Time 14:54:24.40 Case 0006: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.6F

@ 0600; power upratSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE............................................- -----------------LAKE SEEPAGE (CFS) .00 -.18TOTAL EVAP (CFS) .00 -1.39NATURAL EVAP (CFS) .00 -.76FORCED EVAP (CFS) .00 -.63PRECIPITATION (CPS) .00 .00MAKEUP (CFS) .00 .00BLOWDOWN (CFS) .00 .00RUNOFF (CFS) .00 .00DAM SPILL (CFS) .00 .00LAKE ELEVATION (FEET) .00 689.36DISSOLVED SOLIDS (PPM) .00 .00NATURAL LAKE TEMP (F) .00 88.75LAKE INLET TEMP (F) .00 99.67LAKE OUTLET TEMP (F) .00 89.91------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.16-1.29-.74-.55.00.00.00.00.00688.75.0092.63101.8193 61-.18-1.38-.76-.62.00.00.00.00.00689.28.0089.2999.9790.42NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)96.8 95.2 89.0127.0 108.0 99.399.0 96.5 90.2PROJECT NO. 11333-297 CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B37 OF B358REVISION NO. 8Date 03/03/2000 Time : 14:54:24.40 Case 0006: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.6F

@ 0600; power upratCUMULATIVE SEASONAL SUMMARY:

SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CPS) .00 -.18TOTAL EVAP (CFS) .00 -1.39NATURAL EVAP (CPS) .00 -.76FORCED EVAP (CFS) .00 -.63PRECIPITATION (CFS) .00 .00MAKEUP (CFS) .00 ,00BLOWDOWN (CFS) .00 .00RUNOFF (CFS) .00 .00DAM SPILL (CFS) .00 .00LAKE ELEVATION (FEET) .00 689.36DISSOLVED SOLIDS (PPM) .00 .00NATURAL LAKE TEMP (F) .00 88.75LAKE INLET TEMP (F) .00 99.67LAKE OUTLET TEMP (F) .00 89.91TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%------------------------------..........------..------

-.16-1.29-.74-.55.00.00.00.00.00688.75.0092.63101.8193.61-.18-1.38-.76-.62.00.00.00.00.00689.28.0089.2999.9790.42NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)96.8 95.2 89.0127.0 108.0 99.399.0 96.5 90.2PROJECT NO. 11333-297 ATTACHMENT BPAGE B38 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time : 14:54:24.45 Case 0006: LaSalle URS (Updated Worst 36-Day Temp.; Ti=98.6F

@ 06006 power upratTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

LAKE SEEPAGE (CFS)TOTAL EVAP (CFS)NATURAL EVAP (CFS)FORCED EVAP (CFS)PRECIPITATION (CFS)MAKEUP (CFS)BLOWDOWN (CFS)RUNOFF (CFS)DAM SPILL (CFS)LAKE ELEVATION (FEET)DISSOLVED SOLIDS (PPM)NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)-.16-.25.00-.25.00.00.00.00.00689.99.0097.34132.8099.988051900)8041900)7011900)8041900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)-.20-4.51-3.53-1.62.00.00.00.00.00688.66.0082.6793.4284.007011900)7031900)7031900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7071900)7261900)7071900)-.18-1.38-.76-.62.00.00.00.00.00689.28.0089.2999.9790.42-1.26178E+01

-9.81999E+01

-S.42259E+01

-4.39740E+01 0.OOOOOE+00 0.0000DE+00 0.00000E+00 0.OOOOOE+00 0.00000E+00 4.92179E+04 0.OOOOOE+00 6.37598E+03 7.13817E+03 6.45642E+03 TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)96.8 95.2 89.0127.0 108.0 99.399.0 96.5 90.2PROJECT NO. 11333-297 ATTACHMENT BPAGE B39 OF B358CALCULATION NO. L-002457Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Time : 15:10:29.38 Case 0009: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.OF

@ 0900; power uprat1234507010011690.83.8382.1580.5578.9677.3329.70198.0R/IS/I080500200.2690.464.9381.9300.5220.8142.671.7093.515500.1.75.4573.9472.5071.0669.6026.7306418.4343.7270.5198.7128.465.678999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513 .3013 .3013 .3013.2412 .7312.7312. 5712 .4312.2412 .0212 .0212 .0212 .0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0786.0PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B40 OF B358CALCULATION NO. L-002457Number :03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Date 03/03/2000 Time 15:10:29.38 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999 .999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B41 OF B358CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time 15:10:29.38 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B42 OF B358CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time 15:10:29.38 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858 .728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B43 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Date : 03/03/2000 Time 15:10:29.38 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B44 OF B358CALCULATION NO. L-002457Number : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Date : 03/03/2000 Time : 15:10:29.49 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228 .228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B45 OF B358Number 03.7.292-1.0 0 Date : 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time : 15:10:29.99 Case 0009: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.OF

@ 0900; power upratRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 83.830 464.900 75.450 418.400689.000 82.150 381.900 73.940 343.700688.000 80.550 300.500 72.500 270.500687.000 78.960 220.800 71.060 198.700686.000 77.330 142.600 69.600 128.400685.000 29.700 71.700 26.730 65.600PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 98.00 93.50WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B46 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Date 03/03/2000 Time 15:10:29.99 Case 0009: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.OF

@ 0900; power upratFPLANT70100 -TPRISE70100 -80500 R/I80500 s/I86.00035.26015.32013.88013 .30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909 .1909 .1909.1909 .1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B47 OF B358CALCULATION NO. L-002457REVISION NO. 88.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208 .2208.2208.2208 .2208.2208 .2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B48 OF B358Number 03.7.292-1.0 0 Date 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 15:10:30.26 Case 0009: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.0F

@ 0900; power upratSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.18TOTAL EVAP (CFS) .00 -1.39 -1.31 -1.38NATURAL EVAP (CFS) .00 -.76 -.76 -.76FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 ..00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.71 92.63 89.26LAKE INLET TEMP (F) .00 99.63 101.80 99.93LAKE OUTLET TEMP (F) .00 89.86 93.60 90.38------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.8 95.0 89.0LAKE INLET TEMP (F) 128.0 107.0 99.3LAKE OUTLET TEMP (F) 99.0 96.4 90.1PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B49 OF B358Number : 03.7.292-1.0 0 Date : 03/03/2000 Created :Mon Oct 27 08:45:58 1997 Time : 15:10:30.26 Case 0009: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.OF

@ 0900; power upratCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.18TOTAL EVAP (CFS) .00 -1.39 -1.31 -1.38NATURAL EVAP (CFS) .00 -.76 -.76 -.76FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF {CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (P) .00 88.71 92.63 89.26LAKE INLET TEMP (F) .00 99.63 101.80 99.93LAKE OUTLET TEMP (F) .00 89.86 93.60 90.38------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%------------------------------------------------------

NATURAL LAKE TEMP (F) 96.8 95.0 89.0LAKE INLET TEMP (F) 128.0 107.0 99.3LAKE OUTLET TEMP (F) 99.0 96.4 90.1PROJECT NO. 11333-297 CALCULATION NO. L-002457REVISION NO. 8ATTACHMENT BPAGE B50 OF B358ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 11Date 03/03/2000 Time 15:10:30.26 Case 0009: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=98.0F

@ 0900; power upratTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE I VALUE (ACRE-FEET)

....................................................................................................

LAKE SEEPAGE (CFS) -.16 8051900)TOTAL EVAP (CFS) -.25 8041900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) -.25 8041900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 97.06 7011900)LAKE INLET TEMP (F) 133.90 7011900)LAKE OUTLET TEMP (F) 100.00 7011900)TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.60-3.51-1.63.00.00.00.00.00688 .66.0082.6593 .5084.007011900)7031900)7031900)7011900)7011900)7011900)7011900)7011900)7011900)80S190007011900)7061900)7251900)7061900)-.18-1.38-.76-.62.00.00.00.00.00689.28.0089.2699.9390.38-1.26189E+01

-9.83474E+01

-5.43582E+01

-4.39893E+01 0.OOOOOE+00 0.OOOOOE+00 0.00000E+00 0.OOOOOE+00 0.OOOOOE+00 4.92179E+04 0.00000E+00 6.37326E+03 7.13538E+03 6.45365E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)96.8128.099.095.0107.096.489.099.390.1PROJECT NO. 11333-297 ATTACHMENT BPAGE B51 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 1Date : 03/07/2000 Time 17:30:51.66 Case 0009: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=98.OF

@ 0900; power u12 070100 080500 1 13 1 204 1 0.2 5500. 05 690. 690. 1. 683.8382.1580.5578.9677.3329.70198.0R/IS/I464.9381.9300.5220.8142.671.7093 .586.075.4573.9472.5071.0669.6026.73418.4343.7270.5198.7128.465.678999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.07PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B52 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 2Date 03/07/2000 Time 17:30:51.71 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B53 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 3Date 03/07/2000 Time 17:30:51.71 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B54 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date 03/07/2000 Time 17:30:51.71 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B55 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 5Date : 03/07/2000 Time : 17:30:51.71 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498 .498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B56 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 6Date : 03/07/2000 Time 17:30:51.82 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BPAGE B57 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 7Date : 03/07/2000 Time 17:30:52.21 Case 0009: LaSalle UHS (Updated Worst 5/1/30-Day Temp.RUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH:INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EF]690.000 83.830 464.900689.000 82.150 381.900688.000 80.550 300.500687.000 78.960 220.800686.000 77.330 142.600685.000 29.700 71.700PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 98.00 93WEATHER STATION ID 0.* Ti=98.OF

@ 0900; power u5500.00F AREA75.45073.94072.50071.06069.60026.730EFF VOLUME418.400343.700270.500198 .700128.40065.600.50PROJECT NO. 11333-297 ATTACHMENT BPAGE B58 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 8Date : 03/07/2000 Time 17:30:52.21 Case 0009: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=98.0F

@ 0900; power uFPLANT70100 -TPRISE70100 -80500 R/I80500 S/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B59 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208 .4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B60 OF B358Program LAKET-PC Page 9Number 03.7.292-1.0 0 Date 03/07/2000 Created Mon Oct 27 08:45:58 1997 Time 17:30:52.54 Case 0009: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=98.OF

@ 0900; power uSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.15 -.17TOTAL EVAP (CFS) .00 -1.63 -1.32 -1.59NATURAL EVAP (CFS) .00 -.99 -.77 -.96FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.57 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.87 89.48 90.67LAKE INLET TEMP (F) .00 101.56 98.70 101.16LAKE OUTLET TEMP (F) .00 91.80 90.52 91.62------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.8 90.8LAKE INLET TEMP (F) 128.0 109.3 100.8LAKE OUTLET TEMP (F) 99.0 97.1 91.8PROJECT NO. 11333-297 CALCULATION NO. L-002457REVISION NO. 8ATTACHMENT BPAGE B61 OF B358ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page 10Date 03/07/2000 Time 17:30:52.54 Case 0009: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=98.OF 0 0900; power uCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE...................................................................- ------LAKE SEEPAGE (CFS) .00 -.18TOTAL EVAP (CFS) .00 -1.63NATURAL EVAP (CFS) .00 -.99FORCED EVAP (CFS) .00 -.65PRECIPITATION (CFS) .00 .00MAKEUP (CFS) .00 .00BLOWDOWN (CFS) .00 .00RUNOFF (CFS) .00 .00DAM SPILL (CFS) .00 .00LAKE ELEVATION (FEET) .00 689.29DISSOLVED SOLIDS (PPM) .00 .00NATURAL LAKE TEMP (F) .00 90.87LAKE INLET TEMP (F) .00 101.56LAKE OUTLET TEMP (F) .00 91.80---------------------......-..---------.....-----...--

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.15-1.32-.77-.55.00.00.00.00.00688.57.0089.4898.7090.52-.17-1.59-.96-.63.00.00.00.00.00689.19.0090.67101.1691.62NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0 95.8 90.8128.0 109.3 100.899.0 97.1 91.8PROJECT NO. 11333-297 ATTACHMENT BPAGE B62 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page 11Date 03/07/2000 Time 17:30:52.54 Case 0009: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=98.0F

@ 0900; power uTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE VALUE (ACRE-FEET)

LAKE SEEPAGE (CFS) -.15 8051900)TOTAL EVAP (CFS) -.28 8051900)NATURAL EVAP (CFS) .00 7031900)FORCED EVAP (CFS) -.26 7311900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 97.57 7041900)LAKE INLET TEMP (F) 133.38 7011900)LAKE OUTLET TEMP (F) 99.94 7011900)TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-3.97-2.68-1.52.00.00.00.00.00688.47.0082.2591.6583.167011900)7051900)7051900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7241900)7241900)7241900)-.17-1.59-.96-63.00.00.00.00.00689.19.0090.67101.1691.62-1.24192E+01

-1.13531E+02

-6.83140E+01

-4.52166E+01 0.00000E+00 o.OOOOOE+00 o.OOOOOE+00 0.00000E+00 0.OOOOOE+00 4.92118E+04 0.OOOOOE+00 6.47458E+03 7.22337E+03 6.54203E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0128.099.095.8109.397.190.8100.891.8PROJECT NO. 11333-297 ATTACHMENT BPAGE B63 OF B358CALCULATION NO. L-002457REVISION NO. 8ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 1Date 03/06/2000 Time : 11:12:17.94 Case 0012: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=98.5F

@ 1200; power uprat12 070100 080500 1 13 1 204 1 0.2 5500. 05 690. 690. 1. 683.8382.1580.5578 .9677.3329.70198.5R/IS/I464.9381.9300.5220.8142.671.7094.075.4573.9472.5071.0669.6026.73418.4343.7270.5198.7128.465.678999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0786.0PROJECT NO. 11333-297 ATTACHMENT BPAGE B64 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03,7.292-1.0 0Created Monx Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date 03/06/2000 Time : 11:12:17.99 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010 ,5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999. 999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B65 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page 3Date 03/06/2000 Time : 11:12:18.05 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B66 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997PageDateTime* 4* 03/06/2000

• 11:12:18.05 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858 .858.858 .858.858 .858 .728 .708 .708 .708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708 .708.708.708.708.708.528.49PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B67 OF B358Page : 5Date 03/06/2000 Time : 11:12:18.05 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B68 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Page : 6Date : 03/06/2000 Time 11:12:18.05 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BPAGE B69 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 7Date : 03/06/2000 Time 11:12:18.43 Case 0012: LaSalle UNS (Updated Worst 5/1/30-Day Temp.; Ti=98.5F

@ 1200; power upratRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: I ANEMOMETER HEIGHT20.00DENSITY:62.40 SEEPAGE:.20 LAKE LENGTH:5500.00INITIAL LAKE ELEVATION

=690.00DRAWDOWN CURVEELEVATION 690.000689.000688.000687.000686.000685.000PLOT FILE FREQTOTAL AREA83.83082.15080.55078.96077.33029.7001 INCREMENTS A'TOTAL VOLUME464.900381.900300.500220.800142.60071.700r 0 HOURSEFF AREA75.45073.94072.50071.06069.60026.730EFF VOLUME418.400343.700270.500198.700128.40065.600INITIAL FORCED/NATURAL LAKE TEMPS. =98.50 94.00WEATHER STATION ID0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B70 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 8Date : 03/06/2000 Time 11:12:18.43 Case 0012: LaSalle URS (Updated Worst 5/1/30-Day Temp.; Ti=98.5F

@ 1200; power upratFPLANT70100 -TPRISE70100 -80500 R/I80500 S/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009,5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909,1908.8508.8508.8508.8508.8508.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49012.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.700a PROJECT NO. 11333-297 ATTACHMENT BPAGE B71 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908,4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.220.8.2208.2208.4908 ,4908.4908.4908 .4908.4908,4908.4908.4908.4908.4908.4908.4908 .4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208 .2208.4908.4908.4908.4908.4908.4908.4908.4908.4908,4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B72 OF B358Program : LAKET-PC Page : 9Number 03.7.292-1.0 0 Date : 03/06/2000 Created :Mon Oct 27 08:45:58 1997 Time : 11:12:18.76 Case 0012: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=98.SF

@ 1200; power upratSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18 -.15 -.17TOTAL EVAP (CFS) .00 -1.64 -1.32 -1.59NATURAL EVAP (CFS) .00 -.99 -.77 -.96FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 0 .00 .00MAKEUP (CFS) .00 .00 .00 .00SLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.57 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.88 89.48 90.68LAKE INLET TEMP (F) .00 101.58 98.69 101.18LAKE OUTLET TEMP (F) .00 91.81 90.51 91.63------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.8 90.9LAKE INLET TEMP (F) 128.0 109.2 101.0LAKE OUTLET TEMP (F) 99.0 96.9 91.8PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B73 OF B358Program : LAKET-PC Page 10Number : 03.7.292-1.0 0 Date : 03/06/2000 Created Mon Oct 27 08:45:58 1997 Time 11:12:18.76 Case 0012: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=98.5F

@ 1200; power upratCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.15 -.17TOTAL EVAP (CFS) .00 -1.64 -1.32 -1.59NATURAL EVAP (CFS) .00 -.99 -.77 -.96FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.57 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) ,00 90.88 89.48 90.68LAKE INLET TEMP (F) .00 101.58 98.69 101.18LAKE OUTLET TEMP (F) .00 91.81 90.51 91.63------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%------------------------------------------------------

NATURAL LAKE TEMP (F) 97.0 95.8 90.9LAKE INLET TEMP (F) 128.0 109.2 101.0LAKE OUTLET TEMP (F) 99.0 96.9 91.8PROJECT NO. 11333-297 ATTACHMENT BPAGE B74 OF B358CALCULATION NO. L-002457Programn LAKET-PCNumber 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 11Date 03/06/2000 Time 11:12:18.76 Case 0012: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=98.SF a 1200; power upratTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE VALUE (ACRE-FEET)

---

. ....................................................................-- ----LAKE SEEPAGE (CFS) .15 8051900)TOTAL EVAP (CFS) .28 8051900)NATURAL EVAP (CFS) .00 7031900)FORCED EVAP (CFS) .26 7311900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 97.50 7041900)LAKE INLET TEMP (F) 134.83 7011900)LAKE OUTLET TEMP (F) 99.99 7011900)TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-3.86-2.67-1.54.00.00.00.00.00688.47.0082.2491.6583.167011900)7051900)7051900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7241900)7241900)7241900)-.17-1.59-.96-.63.00.00.00.00.00689.19.0090.68101.1891.63-1.24163E+01

-1.13675E+02

-6.84598E+01

-4. 52152E+01 0 OOOOOE+00

0. 00000E+00 0 OOOOOE+00 0 .00000E+00

0. 00000E+00

4. 92117E+04 0 .OOOOOE+00 6 .47533E+03 7.22482E+03 6.54307E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0 95.8128.0 109.299.0 96.990.9101.091.8PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B75 OF B358Page : 1Date 03/06/2000 Time : 13:02:19.27 Case 0015: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=99.5F

@ 1500; power u1234507010011690.83 .8382.1580.5578.9677.3329.70199.5R/IS/I080500200.2690.464.9381.9300.5220.8142.671.7095.086.01 15500.1.75.4573.9472.5071.0669.6026.7306418.4343.7270.5198.7128.465.678999FPLANTTPRISE35.2628.7916.6816.2815.3214 .9714 5314.2913.8813 4513.3013.3013.3013.2412 7312,7312,5712,4312,2412 0212 0212 0212 0212,0111,4911.4911,4911,4911.4911,4911.4911.4911.0911.07PROJECT NO. 11333-297 ATTACHMENT BPAGE B76 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date 03/06/2000 Time : 13:02:19.27 11.0711.0711.0710.8710.8610.8610 5010 .5010 .5010 .5010 .5010.5010.5010.5010.5010.5010.5010.5010.5010 .5010 .5010 .279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B77 OF B358CALCULATION NO. L-002457ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 3Date : 03/06/2000 Time : 13:02:19.27 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199 .199 .199.199.199.199.199.199.199.199.199.199.199 .199.199.199.199.199.199.199.199 .199 .199 .199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B78 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date 03/06/2000 Time 13:02:19.27 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858 .728 .708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B79 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 5Date : 03/06/2000 Time : 13:02:19.27 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B80 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Page : 6Date : 03/06/2000 Time 13:02:19.38 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B81 OF B358Program : LAKET-PC Page : 7Number : 03.7.292-1.0 0 Date 03/06/2000 Created :Mon Oct 27 08:45:58 1997 Time : 13:02:19.87 Case 0015: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=99.5F

@ 1500; power uRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 83.830 464.900 75.450 418.400689.000 82.150 381.900 73.940 343.700688.000 80.550 300.500 72.500 270.500687.000 78.960 220.800 71.060 198.700686.000 77.330 142.600 69.600 128.400685.000 29.700 71.700 26.730 65.600PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 99.50 95.00WEATHER STATION ID 0.PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B82 OF B358REVISION NO. 8Page 8Date 03/06/2000 Time 13:02:19.87 Case 0015: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=99.5F

@ 1500; power uFPLANT70100 -TPRISE70100 -80500 R/I80500 s/I86.00035.26015.32013 .88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909,7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.190"9.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.700o -A16.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7000 -nnPROJECT NO. 11333-297 ATTACHMENT BPAGE B83 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.4908.4908.4908.4908.4908.4908 .4908 .4908 .4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208 2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B84 OF B358Program LAKET-PC Page: 9Number 03.7.292-1.0 0 Date 03/06/2000 Created : Mon Oct 27 08:45:58 1997 Time 13:02:19.98 Case 0015: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=99.SF

@ 1500; power uSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.15 -.17TOTAL EVAP (CFS) .00 -1.64 -1.32 -1,60NATURAL EVAP (CFS) .00 -1.00 -.77 -.96FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.56 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.84 89.49 90.65LAKE INLET TEMP (F) .00 101.54 98.70 101.14LAKE OUTLET TEMP (F) .00 91.77 90.51 91.59TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.8 95.6 90.9LAKE INLET TEMP (F) 127.0 109.3 101.0LAKE OUTLET TEMP (F) 98.8 96.9 91.8PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B85 OF B358Program : LAKET-PC Page 10Number : 03.7.292-1.0 0 Date : 03/06/2000 Created :Mon Oct 27 08:45:58 1997 Time : 13:02:20.04 Case 0015: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=99.5F

@ 1500; power uCUMULATIVE SEASONAL SUMMARY:

SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.15 -.17TOTAL EVAP (CFS) .00 -1.64 -1.32 -1.60NATURAL EVAP (CFS) .00 -1.00 -.77 -.96FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL ICFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.56 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.84 89.49 90.65LAKE INLET TEMP (F) .00 101.54 98.70 101.14LAKE OUTLET TEMP (F) .00 91.77 90.51 91.59------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.8 95.6 90.9LAKE INLET TEMP (F) 127.0 109.3 101.0LAKE OUTLET TEMP (F) 98.8 96.9 91.8PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B86 OF B358REVISION NO. 8Page 11Date 03/06/2000 Time 13:02:20.04 Case 0015: LaSalle UHS (Updated Worst 5/1/30-Day Temp.; Ti=99.5F 0 1500; power uTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

LAKE SEEPAGE (CFS) -.15 8051900)TOTAL EVAP (CFS) .28 8051900)NATURAL EVAP (CFS) .00 7031900)FORCED EVAP (CFS) -.26 7311900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 (7011900)

RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 -7011900)

LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 97.35 7041900)LAKE INLET TEMP (F) 135.20 7011900)LAKE OUTLET TEMP (F) 99.94 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.09-3.27-1.58.00.00.00.00.00688.47.0082.2491.5483 .057011900)7051900)7051900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7241900)7241900)7241900)-.17-1.60-.96-.63.00.00.00.00.00689.19.0090.65101.1491.59-1.24086E+01

-1.14028E+02

-6.88232E+01

-4.S2052E+01 O.OOOOOE+00 0.0000OE+00 O.OOOOOE+00 0.00000E+00 0.OOOOOE+00 4.92115E+04 0.OOOOOE+00 6.47283E+03 7.22206E+03 6.S4024E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)96.8 95.6 90.9127.0 109.3 101.098.8 96.9 91.8PROJECT NO. 11333-297 ATTACHMENT BPAGE B87 OF B358CALCULATION NO. L-002457Number 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8-Dte : 03/03/2000 Time : 16:32:04.07 Case 0018: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.0F 9 1800; power upra1234578999PPLANTTPRISE35.2628.7916.6816.2815.3214.9714 .5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0707010011690.83.8382.1580.5578.9677.3329.701100.0R/Is/I080500200.2690.464.9381.9300.5220.8142 .671.7095.586 .01 15500.1.75.4573.9472.5071.0669.6026.7306418.4343,7270.5198.7128.465.6PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B88 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page: 2Date 03/03/2000 Time 16:32:04.13 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.S010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B89 OF B358REVISION NO. 8Page : 3Date 03/03/2000 Time 16:32:04.13 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199 .199 .199 .199.199.199 .199.199.199.199.199.199.199.199.199 199.19PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B90 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997Page : 4Date : 03/03/2000 Time 16:32:04.13 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B91 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Page : 5Date 03/03/2000 Time : 16:32:04.13 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B92 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 6Date : 03/03/2000 Time : 16:32:04.23 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B93 OF B358Program : LAKET-PC Page : 7Number : 03.7.292-1.0 0 Date : 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time 16:32:04.67 Case 0018: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 1800; power upraRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 83.830 464.900 75.450 418.400689.000 82.150 381.900 73.940 343.700688.000 80.550 300.600 72.500 270.500687.000 78.960 220.800 71.060 198.700686.000 77.330 142.600 69.600 128.400685.000 29.700 71.700 26.730 65.600PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 100.00 95.50WEATHER STATION ID 0.PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE 894 OF B358REVISION NO. 8Page : 8Date : 03/03/2000 Time : 16:32:04.67 Case 0018: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.0F

@ 1800; power upraFPLANT70100 -80500 R/ITPRISE70100 -80500 S/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010,50010.5009.9909.9909.9909.9909.9909.7009.5409.5409 .S409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909,1908.8508.8508.8508.8508.8508.7208.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.70016.68014.S3013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010,5009.9909.9909.9909.9909.7209.7009,5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7007nnPROJECT NO. 11333-297 CALCULATION NO. L-002457ATTACHMENT BPAGE B95 OF B358REVISION NO. 8o. Iv.8.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.5208.4908.4908.4908.4908.4908.4908 .4908 .4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B96 OF B358Page : 9Date : 03/03/2000 Time : 16:32:04.95 Case 0018: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 1800; power upraSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18TOTAL EVAP (CFS) .00 -1.37NATURAL EVAP (CFS) .00 -.75FORCED EVAP (CFS) .00 -.62PRECIPITATION (CFS) .00 .00MAKEUP (CFS) .00 .00BLOWDOWN (CFS) .00 .00RUNOFF (CFS) .00 .00DAM SPILL (CFS) .00 .00LAKE ELEVATION (FEET) .00 689.37DISSOLVED SOLIDS (PPM) .00 .00NATURAL LAKE TEMP (F) .00 88.54LAKE INLET TEMP (F) .00 99.46LAKE OUTLET TEMP (F) .00 89.70------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-------------------------------------------------.16-1.34-.79-.55.00.00.00.00.00688.76.0092.57101.7293.51-.18-1.37-.76-.61.00.00.00.00.00689.29.0089.1099.7790.23NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)95.8 94.4126.0 105.597.5 95.788.999.390.0PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B97 OF B358Program LAKET-PC Page 10Number 03.7.292-1.0 0 Date 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time 16:32:04.95 Case 0018: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.0F

@ 1800; power upraCUMULATIVE SEASONAL SUMMARY:

SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.18TOTAL EVAP (CFS) .00 -1.37 -1.34 -1.37NATURAL EVAP (CPS) .00 -.75 -.79 -.76FORCED EVAP (CFS) .00 -.62 -.55 -.61PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.37 688.76 689.29DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.54 92.57 89.10LAKE INLET TEMP (F) .00 99.46 101.72 99.77LAKE OUTLET TEMP (F) .00 89.70 93.51 90.23------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%------------------------------------------------------

NATURAL LAKE TEMP (F) 95.8 94.4 88.9LAKE INLET TEMP (F) 126.0 105.5 99.3LAKE OUTLET TEMP (F) 97.5 95.7 90.0PROJECT NO. 11333-297 ATTACHMENT BPAGE B98 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 11Date 03/03/2000 Time 16:32:04.95 Case 0018: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 1800; power upraTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

.............. ........................................................................-- -----LAKE SEEPAGE (CFS) -.16 8051900)TOTAL EVAP (CFS) .25 8031900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) .25 8031900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 96.38 8031900)LAKE INLET TEMP (F) 133.93 7011900)LAKE OUTLET TEMP (F) 98.67 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%------------------------------------------------------

-.20-4.62-3.41-1.38.00.00.00.00.00688.66.0082.5393.4483.867011900)7021900)7021900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7061900)7251900)7061900)-.18-1.37-.76-.61.00.00.00.00.00689.29.0089.1099.7790.23-1.26427E+01

-9.78120E+01

-5.39938E+01

-4.38182E+01 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.00000E+00 0.OOOOOE+00 4.92186E+04 0.OOOOE+00 6.36231E+03 7.12436E+03 6.44259E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)95.8126.097.594 .4105 .595.788.999.390.0PROJECT NO. 11333-297 ATTACHMENT BPAGE B99 OF B358CALCULATION NO. L-002457REVISION NO. 8ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 1Date 03/03/2000 Time 16:39:49.73 Case 0021: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 2100; power upra12 070100 080500 1 13 1 204 1 0.2 5500. 05 690. 690. 1. 683.8382.1580.5578.9677.3329.701100.0RP/s/I464.9381.9300.5220.8142.671.7095.575.4573.9472.5071.0669.6026.73418.4343.7270.5198.7128.465.678999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0786.0PROJECT NO. 11333-297 CALCULATION NO. L-002457vrogram L.j.k' Number : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B100 OF B358Date 03/03/2000 Time ; 16:39:49.78 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE Bl01 OF B358CALCULATION NO. L-002457REVISION NO. 8ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 3Date 03/03/2000 Time 16:39:49.78 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B102 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 4Date : 03/03/2000 Time 16:39:49.78 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858 .728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B103 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 5Date : 03/03/2000 Time : 16:39:49.78 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B104 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 6Date 03/03/2000 Time : 16:39:49.89 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BPAGE B105 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 7Date 03/03/2000 Time : 16:39:50.00 Case 0021: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 2100; power upraRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT20.00DENSITY:62.40 SEEPAGE:.20 LAKE LENGTH:5500.00INITIAL LAKE ELEVATION

=690.00DRAWDOWN CURVEELEVATION 690.000689.000688.000687.000686.000685.000PLOT FILE FREQTOTAL AREA83.83082.15080.55078.96077.33029.7001 INCREMENTS TOTAL VOLUME464.900381.900300.500220.800142.60071.700AT 0 HOURSEFF AREA75.45073 .94072.50071.06069.60026.730EFF VOLUME418.400343.700270.500198.700128.40065.600INITIAL FORCED/NATURAL LAKE TEMPS. =100.00 95.50WEATHER STATION ID0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B106 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 8Date : 03/03/2000 Time : 16:39:50.28 Case 0021: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 2100; power upraFPLANT70100 -80500TPRISE70100 -80500R/IS/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B107 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908,4908.4908 .4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208 .2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B108 OF B358Program LAKET-PC Page 9Number : 03.7.292-1.0 0 Date 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 16:39:50.55 Case 0021: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 2100; power upraSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18 -.16 -.18TOTAL EVAP (CFS) .00 -1.38 -1.37 -1.37NATURAL EVAP (CFS) .00 -.75 -.82 -.76FORCED EVAP (CFS) .00 -.62 -.55 -.61PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.37 688.76 689.29DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.57 92.54 89.12LAKE INLET TEMP (F) .00 99.50 101.66 99.80LAKE OUTLET TEMP (F) .00 89.74 93.46 90.25TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.0 94.4 88.9LAKE INLET TEMP (F) 126.0 105.3 99.3LAKE OUTLET TEMP (F) 97.7 95.7 90.1PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B109 OF B358Program : LAKET-PC Page : 10Number : 03.7.292-1.0 0 Date : 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time : 16:39:50.55 Case 0021: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=100.OF

@ 2100; power upraCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18 -.16 -.18TOTAL EVAP (CFS) .00 -1.38 -1.37 -1.37NATURAL EVAP (CPS) .00 -.75 -.82 -.76FORCED EVAP (CFS) .00 -.62 -.55 -.61PRECIPITATION (CPS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CPS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CPS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.37 688.76 689.29DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.57 92.54 89.12LAKE INLET TEMP (F) .00 99.50 101.66 99.80LAKE OUTLET TEMP (F) .00 89.74 93.46 90.25TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.0 94.4 88.9LAKE INLET TEMP (F) 126.0 105.3 99.3LAKE OUTLET TEMP (F) 97.7 95.7 90.1PROJECT NO. 11333-297 ATTACHMENT BPAGE Bl10 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 11Date 03/03/2000 Time 16:39:50.55 Case 0021: LaSalle UHS (Updated Worst 36-Day Temp.; Ti=I00.OF

@ 2100; power upraTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

...............................- ----------------------------------LAKE SEEPAGE (CFS) -.16 8051900)TOTAL EVAP (CFS) -.25 8031900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) -.25 8031900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 96.38 8031900)LAKE INLET TEMP (F) 133.75 7011900)LAKE OUTLET TEMP (F) 98.49 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.66-3.45-1.76.00.00.00.00.00688.66.0082.5993.3884.087011900)7021900)7021900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7061900)7251900)7061900)-.18-1.37-.76-.61.00.00.00.00.00689.29.0089.1299.8090.25-1.26421E+01

-9.80903E+01

-5.42381E+01

-4.38522E+01 0.OOOOOE+00 0.00000E+00 0.OOOOOE+00 0.00000E+00 0.00000E+00 4.92186E+04 0.00000E+00 6.36379E+03 7.12633E+03 6.44461E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)96.0 94.4126.0 105.397.7 95.788.999.390.1PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B111 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997Page : 1Date : 03/03/2000 Time : 14:20:11.83 Case 0600: LaSalle UES (Updated Worst 36-Day Temp; Ti=100.0F 00000; power uprat1234507010011690.82.9981.3579.7578.1529.7022.220100.0R/IS/I080500200.2690.423 .5341.4260.8181.9102.260.015500.1.74.6973.2171.7870.3426.7320.0006381.2307.2234.7163.792.054.0718999FPLANTTPRISE35.2628.7916 .6816.2815.3214 .9714 .5314.2913 .8813.4513.3013.3013.3013 .2412 .7312.7312.5712.4312.2412.0212 .0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0995.586.0PROJECT NO. 11333-297 ATTACHMENT BPAGE Bl12 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page: 2Date : 03/03/2000 Time 14:20:11.83 11.0711.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010 .5010 .5010.5010.5010 .5010 .SO10.5010.5010 .5010.5010 .279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709. 709.709.709.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE Bl13 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 3Date 03/03/2000 Time : 14:20:11.89 9.549.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B114 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date : 03/03/2000 Time : 14:20:11.89 9.199.199.199 .158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858 .858.858.858 .858 .858 .728 .708 .708.708.708.708.708.708.708.708.708.708 .708 .708 .708 .708 .708 .708.708 .708.708 .708 .708 .708.70R -2PROJECT NO. 11333-297 ATTACHMENT BPAGE Bl15 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 5Date 03/03/2000 Time 14:20:11.89 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber :03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE Bl16 OF B358REVISION NO. 8Page : 6Date : 03/03/2000 Time : 14:20:12.00 8.498.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.220aPROJECT NO. 11333-297 ATTACHMENT BPAGE Bl17 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.00 Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 7Date : 03/03/2000 Time : 14:20:12.05 PROJECT NO. 11333-297 ATTACHMENT BPAGE B118 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 8Date : 03/03/2000 Time : 14:20:12.44 Case 0600: LaSalle UHS (Updated Worst 36-Day Temp; Ti:RUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : I CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH:INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFI690.000 82.990 423.500689.000 81.350 341.400688.000 79.750 260.800687.000 78.150 181.900686.000 29.700 102.200685.000 22.220 60.000PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 100.00 95WEATHER STATION ID 0.-100.OF @0000; power uprat5500.00F AREA74.69073.21071.78070.34026.73020.000EFF VOLUME381.200307.200234.700163.70092.00054.000.50PROJECT NO. 11333-297 ATTACHMENT BPAGE B119 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 9Date : 03/03/2000 Time : 14:20:12.44 Case 0600: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF 00000; power upratFPLANT70100 -80500TPRISE70100 -80500R/ Is/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909. 9909. 9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908,8508.8508.8508.8508.8508.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409 .1909 .1909.1909.1909 .1909.1909.1909.1909.1909.1909 .1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B120 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008 .5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B121 OF B358Program : LAKET-PC Page 10Number : 03.7.292-1.0 0 Date 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time 14:20:12.60 Case 0600: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@0000; power upratSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP (CFS) .00 -1.38 -1.25 -1.36NATURAL EVAP (CFS) .00 -.76 -.70 -.75FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.75 92.74 89.31LAKE INLET TEMP (F) .00 99.59 101.78 99.89LAKE OUTLET TEMP (F) .00 89.82 93.59 90.35------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.5 95.5 89.0LAKE INLET TEMP (F) 125.0 109.0 99.3LAKE OUTLET TEMP (F) 98.8 96.7 90.1PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B122 OF B358Program : LAKET-PC Page : 11Number 03.7.292-1.0 0 Date 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 14:20:12.60 Case 0600: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@0000; power upratCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP (CFS) .00 -1.38 -1.25 -1.36NATURAL EVAP (CFS) .00 -.76 -.70 -.75FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.75 92.74 89.31LAKE INLET TEMP (F) .00 99.59 101.78 99.89LAKE OUTLET TEMP (F) .00 89.82 93.59 90.35------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.5 95.5 89.0LAKE INLET TEMP (F) 125.0 109.0 99.3LAKE OUTLET TEMP (F) 98.8 96.7 90.1PROJECT NO. 11333-297 ATTACHMENT BPAGE B123 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber: 03.7.292-1.0 0Created Mon Oct 27 08;45:58 1997REVISION NO. 8Page 12Date 03/03/2000 Time : 14:20:12.60 Case 0600: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@0000; power upratTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE )VALUE ( DATE ) VALUE (ACRE-FEET)

LAKE SEEPAGE (CFS) -.15 8051900)TOTAL EVAP (CFS) -.22 8041900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) -.22 8041900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)SLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 97.81 7011900)LAKE INLET TEMP (F) 133.63 7011900)LAKE OUTLET TEMP (F) 99.40 7011900)TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%......................................................

-.20-4.45-3.49-1.65.00.00.00.00.00688.66.0082.1992.9383.367011900)7031900)7031900)7021900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7071900)7261900)7071900)-.17-1.36-.75-.62.00.00.00.00.00689.28.0089.3199.8990.35-1.24523E+01

-9.73128E+01

-5.33378E+01

-4.39751E+01 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 O.O0000E+00 0.OOOOOE+00 4.92178E+04 0.OOOOOE+00 6.37696E+03 7.13288E+03 6.45117E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.5125.098.895.5109.096.789.099.390.1PROJECT NO. 11333-297 ATTACHMENT BPAGE B124 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 1Date : 03/03/2000 Time : 14:36:07.37 Case 0603: LaSalle UHS (Updated Worst 36-Day Temp; Ti=99.2F

@0300; power uprate1234507010011690.82.9981.3579.7578.1529.7022.22099.2R/IS/I080500200.2690.423.5341.4260.8181.9102.260.01 15500.I.74.6973.2171.7870.3426.7320.0006381.2307.2234.7163.792.054.0718999FPLANTTPRISE35.2628.7916.6816.281S.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0994.786.0PROJECT NO. 11333-297 ATTACHMENT BPAGE B125 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date : 03/03/2000 Time 14:36:07.43 11.0711.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B126 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 3Date 03/03/2000 Time : 14:36:07.43 9.549.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B127 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date 03/03/2000 Time 14:36:07.43 9.199.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708. 708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.70R .;2PROJECT NO. 11333-297 ATTACHMENT BPAGE B128 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 5Date 03/03/2000 Time 14:36:07.43 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B129 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 6Date : 03/03/2000 Time 14:36:07.48 8.498.498.448.228.228.228.228.228.228.228.228 .228 .228 .228 .228 .228.228.228.228 .228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228.228.228.228.228.228.228.228.228.228.228.228.228.228.22PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B130 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 7Date 03/03/2000 Time : 14:36:07.54 ENDPROJECT NO. 11333-297 ATTACHMENT BPAGE B131 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997Case 0603: LaSalle UHS (Updated Worst 36-Day TRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION ;1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHTDENSITY:

62.40 SEEPAGE:

.20 LAKEINITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME690.000 82.990 423.500689.000 81.350 341.400688.000 79.750 260.800687.000 78.150 181.900686.000 29.700 102.200685.000 22.220 60.000PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 99.20WEATHER STATION ID 0.REVISION NO. 8Page: BDate : 03/03/2000 Time : 14:36:07.81 emp; Ti=99.2F

@0300; power uprate20.00LENGTH:5500.00EFF AREA74.69073.21071.78070.34026.73020.000EFF VOLUME381.200307.200234.700163.70092.00054.00094 .70PROJECT NO. 11333-297 ATTACHMENT BPAGE B132 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Moz Oct 27 08:45:58 1997REVISION NO. 8Page : 9Date 03/03/2000 Time : 14:36:07.81 Case 0603: LaSalle UHS (Updated Worst 36-Day Temp; Ti=99.2F

@0300; power uprateFPI.ANT70100 -80500 R/I86.000TPRISE70100 -80500 S/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010 .50010 .5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B133 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B134 OF B358Program LAKET-PC Page : 10Number 03.7.292-1.0 0 Date 03/03/2000 Created :Mon Oct 27 08:45:58 1997 Time 14:36:07.98 Case 0603: LaSalle UHS (Updated Worst 36-Day Temp; Ti=99.2F 00300; power uprateSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP (CFS) .00 -1.38 -1.27 -1.36NATURAL EVAP (CFS) .00 -.75 -.72 -.75FORCED EVAP (CFS) .00 -.63 -.56 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.73 92.77 89.29LAKE INLET TEMP (F) .00 99.58 101.81 99.89LAKE OUTLET TEMP (F) .00 89.82 93.62 90.35------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.3 95.5 89.0LAKE INLET TEMP (F) 125.0 109.0 99.3LAKE OUTLET TEMP (F) 99.0 96.7 90.1PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B135 OF B358Program : LAKET-PC Page : 11Number : 03.7.292-1.0 0 Date 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time : 14:36:07.98 Case 0603: LaSalle UHS (Updated Worst 36-Day Temp; Ti=99.2F

@0300; power uprateCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP (CFS) .00 -1.38 -1.27 -1.36NATURAL EVAP (CFS) .00 -.75 -.72 -.75FORCED EVAP (CFS) .00 -.63 -.56 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DZSSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.73 92.77 89.29LAKE INLET TEMP (F) .00 99.58 101.81 99.89LAKE OUTLET TEMP (F) .00 89.82 93.62 90.35TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.3 95.5 89.0LAKE INLET TEMP (F) 125.0 109.0 99.3LAKE OUTLET TEMP (F) 99.0 96.7 90.1PROJECT NO. 11333-297 ATTACHMENT BPAGE B136 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 12Date 03/03/2000 Time : 14:36:07.98 Case 0603: LaSalle UHS (Updated Worst 36-Day Temp; Ti=99.2F

@0300; power uprateTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE )VALUE ( DATE )VALUE (ACRE-FEET)

---

LAKE SEEPAGE (CFS)TOTAL EVAP (CFS)NATURAL EVAP (CFS)FORCED EVAP (CFS)PRECIPITATION (CFS)MAKEUP (CFS)BLOWDOWN (CFS)RUNOFF (CFS)DAM SPILL (CFS)LAKE ELEVATION (FEET)DISSOLVED SOLIDS (PPM)NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)-.15-.22.00-.22.00.00.00.00.00690.00.0097.76133.1299.968051900)8041900)7011900)8041900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)-.20-4.47-3.48-1.67.00.00.00.00.00688.66.0082.2092.9483.737011900)7031900)7031900)7021900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7071900)7261900)7071900)-.17-1.36-.75-.62.00.00.00.00.00689.28.0089.2999.8990.35-1.24511E+01

-9.73689E+01

-5.33954E+01

-4.39735E+01 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 4.92178E+04 0.OOOOOE+00 6.37599E+03 7.13237E+03 6.45128E+03 TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%..........................NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.3 95.5125.0 109.099.0 96.789.099.390.1PROJECT NO. 11333-297 ATTACHMENT BPAGE B137 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 1Date 03/03/2000 Time : 14:59:24.73 Case 0606: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.9F

@0600; power uprate12 070100 080500 1 13 1 204 1 0.2 5500. 05 690. 690. 1. 682.9981.3579.7578.1529.7022.22097.9423.5341.4260.8181.9102.260.074.6973.2171.7870.3426.7320.00381.2307.2234.7163.792.054.0718999FPLANTTPRISE35.2628.7916.6816.2815.3214 .9714 .5314.2913 .8813 .4513.3013 .3013 .3013 .2412.7312.7312.5712 .4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0993.486.0R/IS/IPROJECT NO. 11333-297 ATTACHMENT BPAGE B138 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date 03/03/2000 Time 14:59:24.73 11.0711.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B139 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 3Date : 03/03/2000 Time 14:59:24.73 9.549.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B140 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date 03/03/2000 Time : 14:59:24.73 9.199.199.199.1S8.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708 .708.708.708.52PROJECT NO. 11333-297 ATTACHMENT BPAGE B141 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page: 5Date : 03/03/2000 Time : 14:59:24.79 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B142 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 6Date : 03/03/2000 Time : 14:59:24.84 8.498.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B143 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 7Date 03/03/2000 Time 14:59:24.95 ENDPROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7,292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B144 OF B358REVISION NO. 8Page : 8Date 03/03/2000 Time : 14:59:25.23 Case 0606: LaSalle UHS (Updated Worst 36-Day Temp; Ti=RUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH:INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF690.000 82.990 423.500689.000 81.350 341.400688.000 79.750 260.800687.000 78.150 181.900686.000 29.700 102.200 2685.000 22.220 60.000 2PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 97.90 93.WEATHER STATION ID 0.=97.9F @0600; power uprate5500.00AREA4.69073.21071.780'0.3406.7300.000EFF VOLUME381.200307.200234.700163.70092.00054.00040PROJECT NO. 11333-297 CALCULATION NO. L-002457ATTACHMENT BPAGE B145 OF B358REVISION NO. 8ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 9Date 03/03/2000 Time 14:59:25.23 Case 0606: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.9F

@0600; power uprateFPLANT70100 -80500 R/I86.000TPRISE70100 -80500 S/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409 .5409.5409.4009.1909.1909.1909.1909.1909.1909 .1909.1909.1909.1909.1908 .8508.8508.8508.8508.8508.7208.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B146 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908 .4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B147 OF B358Program : LAKET-PC Page :10Number 03.7.292-1.0 0 Date 03/03/2000 Created :Mon Oct 27 08:45:58 1997 Time 14:59:25.39 Case 0606: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.9F

@0600; power uprateSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP (CFS) .00 -1.38 -1.29 -1.37NATURAL EVAP (CFS) .00 -.75 -.74 -.75FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.66 92.78 89.23LAKE INLET TEMP (F) .00 99.51 101.81 99.83LAKE OUTLET TEMP (F) .00 89.75 93.62 90.29------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.8 95.3 89.0LAKE INLET TEMP (F) 126.0 108.0 99.3LAKE OUTLET TEMP (F) 99.0 96.5 90.1PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B148 OF B358Program : LAKET-PC Page 11Number 03.7.292-1.0 0 Date 03/03/2000 Created :Mon Oct 27 08:45:58 1997 Time 14:59:25.39 Case 0606: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.9F

@0600; power uprateCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP. (CFS) .00 -1.38 -1.29 -1.37NATURAL EVAP (CFS) .00 -.75 -.74 -.75FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.75 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.66 92.78 89.23LAKE INLET TEMP (F) .00 99.51 101.81 99.83LAKE OUTLET TEMP (F) .00 89.75 93.62 90.29------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.8 95.3 89.0LAKE INLET TEMP (F) 126.0 108.0 99.3LAKE OUTLET TEMP (F) 99.0 96.5 90.1PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B149 OF B358Page : 12Date 03/03/2000 Time : 14:59:25.39 Case 0606: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.9F

@0600; power uprateTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

........................ ...................-- ---------------------------LAKE SEEPAGE (CFS)TOTAL EVAP (CFS)NATURAL EVAP (CFS)FORCED EVAP (CFS)PRECIPITATION (CFS)MAKEUP (CFS)BLOWDOWN (CFS)RUNOFF (CFS)DAM SPILL (CFS)LAKE ELEVATION (FEET)DISSOLVED SOLIDS (PPM)NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)-.15-.22.00-.22.00.00.00.00.00690.00.0097.06132.0899.988051900)8041900)7011900)8041900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)-.20-4.46-3.44-1.65.00.00.00.00.00688.65.0082 .1592 .9683 .387011900)7031900)7031900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7071900)7261900)7071900)-.17-1.37-.75-.62.00.00.00.00.00689.28.0089.2399.8390.29-1.24532E+01

-9.74773E+01

-5.35152E+01

-4.39622E+01 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 4.92179E+04 0.OOOOOE+00 6.37134E+03 7.12853E+03 6.44715E+03 TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)96.8126.099.095.3108.096.589.099.390.1PROJECT NO. 11333-297 ATTACHMENT BPAGE B150 OF B358CALCULATION NO. L-002457Program :AKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 1Date : 03/06/2000 Time : 10:28:47.11 Case 0609: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.SF

@0900; power up12 070100 080500 1 13 1 204 1 0.2 5500. 05 690. 690. 1. 682.9981.3579.7578.1529.7022.22097.5R/IS/I423.5341.4260.8181.9102.260.074.6973.2171.7870.3426.7320.00381.2307.2234.7163.792.054.0718999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0993.086.0PROJECT NO. 11333-297 ATTACHMENT BPAGE B151 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date 03/06/2000 Time 10:28:47.11 11.0711.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B152 OF B358CALCULATION NO. L-002457Program :LAKET-PC Number : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 3Date : 03/06/2000 Time : 10:28:47.16 9.549.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B153 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date : 03/06/2000 Time 10:28:47.16 9.199.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.8S8.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.52PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B154 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 5Date 03/06/2000 Time 10:28:47.16 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B155 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 6Date : 03/06/2000 Time 10:28:47.22 8.498.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B156 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 7Date : 03/06/2000 Time : 10:28:47.33 ENDPROJECT NO. 11333-297 ATTACHMENT BPAGE B157 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 8Date : 03/06/2000 Time : 10:28:47.71 Case 0609: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.5F 00900; power upRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT20.00DENSITY:62.40 SEEPAGE:.20 LAKE LENGTH:5500.00INITIAL LAKE ELEVATION

=690.00DRAWDOWN CURVEELEVATION 690.000689.000688.000687.000686.000685.000PLOT FILE FREQTOTAL AREA82.99081.35079.75078.15029.70022.2201 INCREMENTS A]TOTAL VOLUME423.500341.400260.800181.900102.20060.0000 HOURSEFF AREA74.69073.21071.78070.34026.73020,000EFF VOLUME381.200307.200234.700163.70092.00054.000INITIAL FORCED/NATURAL LAKE TEMPS. =97.50 93.00WEATHER STATION ID0.PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B158 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Case 0609: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.5F

@0900; power upPage : 9Date : 03/06/2000 Time : 10:28:47.71 FPLANT70100 -80500TPRISE70100 -80500R/Is/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909 .1909.1909.1909.1909.1909.1909. 1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.790 16.68014.970 14.53013.450 13.30013.240 12.73012.430 12.24012.020 12.02011.490 11.49011.490 11.49011.070 11.07010.870 10.86010.500 10.50010.500 10.50010.500 10.50010.500 10.5009.990 9.9909.990 9.9909.990 9.9909.990 9.9909.990 9.7209.700 9.7009.540 9.5409.540 9.5409.540 9.5409.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1508.850 8.8508.850 8 .8508.850 8.8508.850 8.8508 .850 8.8508.700 8.7008.700 8.7008.700 8.7008.700 8.7008.700 8.700PROJECT NO. 11333-297 16.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700 ATTACHMENT BPAGE B159 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B160 OF B358Program LAKET-PC Page : 10Number 03.7.292-1.0 0 Date : 03/06/2000 Created Mon Oct 27 08:45:58 1997 Time 10:28:47.99 Case 0609: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.5F

@0900; power upSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.15 -.17TOTAL EVAP (CFS) .00 -1.62 -1.32 -1.58NATURAL EVAP (CFS) .00 -.97 -.77 -.94FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWW (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.57 689.19DISSOLVE3D SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.79 89.62 90.63LAKE INLET TEMP (F) .00 101.45 98.76 101.08LAKE OUTLET TEMP (F) .00 91.70 90.58 91.55TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.9 90.9LAKE INLET TEMP (F) 128.0 109.4 100.9LAKE OUTLET TEMP (F) 99.0 97.1 91.9PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B161 OF B358Program LAKET-PC Page : 1iNumber : 03.7.292-1.0 0 Date 03/06/2000 Created Mon Oct 27 08:45:58 1997 Time : 10:28:48.04 Case 0609: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.SF

@0900; power upCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.15 -.17TOTAL EVAP (CFS) .00 -1.62 -1.32 -1.58NATURAL EVAP (CFS) .00 -.97 -.77 -.94FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.57 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.79 89.62 90.63LAKE INLET TEMP (F) .00 101.45 98.76 101.08LAKE OUTLET TEMP (F) .00 91.70 90.58 91.5STEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.9 90.9LAKE INLET TEMP (F) 128.0 109.4 100.9LAKE OUTLET TEMP (F) 99.0 97.1 91.9PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B162 OF B358Page 12Date 03/06/2000 Time 10:28:48.04 Case 0609: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.5F

@0900; power upTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

....................................................................................................

LAKE SEEPAGE (CFS)TOTAL EVAP (CFS)NATURAL EVAP (CFS)FORCED EVAP (CFS)PRECIPITATION (CFS)MAKEUP (CFS)BLOWDOWN (CFS)RUNOFF (CFS)DAM SPILL (CFS)LAKE ELEVATION (FEET)DISSOLVED SOLIDS (PPM)NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)----------------------

TEMPERATURE

---

NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)-.15-.32.00-.26.00.00.00.00.00689.99.0097.72132.9599.988051900)8051900)7031900)7311900i7011900)7011900)7011900)7011900)7011900)7011900)7011900)7041900)7011900)7011900)-.20-4.06-2.67-1.53.00.00.00.00.00688.47.0081.7490.9982.507011900)7051900)7051900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7241900)7241900)7241900)-.17-1.58-.94-.63.00.00.00.00.00689.19.0090.63101.0891.55-1.22325E+01

-1.12591E+02

-6.74198E+01

-4.51712E+01 0.00000E+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 4.92117E+04 0.OOOOOE+00 6.47137E+03 7.21761E+03 6.53681E+03 FREQUENCY OF OCCURENCES 1% 5% 50%97.0128.099.095.9109.497.190.9100.991.9PROJECT NO. 11333-297 CALCULATION NO. L-002457ATTACHMENT BPAGE B163 OF B358REVISION NO. 8ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 1Date 03/06/2000 Time : 11:24:37.23 Case 0612: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=98.34F

@1200; power u12 070100 080500 1 13 1 204 1 0.2 5500. 05 690. 690. 1. 682.9981.3579.7578.1529.7022.22098.3R/Is/I423.5341.4260.8181.9102.260.074.6973.2171.7870.3426.7320.00381.2307.2234.7163.792.054.0718999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714 .5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0993.886.0PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B164 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 2Date : 03/06/2000 Time 11:24:37.23 11.0711.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B165 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 3Date : 03/06/2000 Time 11:24:37.23 9.549.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199 .199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B166 OF B358CALCULATION NO. L-002457REVISION NO. 8ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 4Date : 03/06/2000 Time : 11:24:37.23 9.199.199.199 .158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858 .728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.52PROJECT NO. 11333-297 ATTACHMENT BPAGE B167 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page 5Date 03/06/2000 Time 11:24:37.29 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B168 OF B358CALCULATION NO. L-002457REVISION NO. 8ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 6Date 03/06/2000 Time 11:24:37.34 8.498.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B169 OF B358CALCULATION NO. L-002457ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 7Date 03/06/2000 Time 11:24:37.45 ENDPROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B170 OF B358Page 8Date 03/06/2000 Time 11:24:37.73 Case 0612: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=98.34F

@1200; power uRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT20.00DENSITY:62.40 SEEPAGE:.20 LAKE LENGTH:5500.00INITIAL LAKE ELEVATION

=690.00DRAWDOWN CURVEELEVATION 690.000689.000688.000687.000686.000685.000PLOT FILE FREQTOTAL AREA82 .99081.35079.75078.15029.70022,2201 INCREMENTS A!TOTAL VOLUME423.500341.400260.800181.900102.20060.000r 0 HOURSEFF AREA74.69073.21071.78070.34026.73020.000EFF VOLUME381.200307.200234.700163.70092.00054.000INITIAL FORCED/NATURAL LAKE TEMPS. =98.30 93.80WEATHER STATION ID0PROJECT NO. 11333-297 ATTACHMENT BPAGE B171 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page 9Date : 03/06/2000 Time 11:24:37.73 Case 0612: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=98.34F

@1200; power uFPLANT70100 -80500 R/ITPRISE70100 -80500 S/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008 .70028.790 16.68014.970 14.53013.450 13.30013.240 12.73012.430 12.24012.020 12.02011.490 11.49011.490 11.49011.070 11.07010.870 10.86010.500 10.50010.500 10.50010.500 10.50010.500 10.5009.990 9.9909.990 9.9909.990 9.9909.990 9.9909.990 9.7209.700 9.7009.540 9.5409.540 9.5409.540 9.5409.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1508.850 8.8508.850 8.8508.850 8.8508.850 8.8508.850 8.8508.700 8.7008.700 8.7008.700 8.7008.700 8.7008.700 8.700PROJECT NO. 11333-297 16.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700 ATTACHMENT BPAGE B172 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908 .4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208 ,2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B173 OF B358Program LAKET-PC Page : 10Number 03.7.292-1.0 0 Date 03/06/2000 Created Mon Oct 27 08:45:58 1997 Time 11:24:37.89 Case 0612: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=98.34F 01200; power uSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.15 -.17TOTAL EVAP (CFS) .00 -1.62 -1.32 -1.58NATURAL EVAP (CFS) .00 -.98 -.77 -.95FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.56 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.82 89.62 90.65LAKE INLET TEMP (F) .00 101.47 98.76 101.10LAKE OUTLET TEMP (F) .00 91.72 90.58 91.56TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.8 90.9LAKE INLET TEMP (F) 128.0 109.5 100.9LAKE OUTLET TEMP (F) 99.3 96.9 91.9PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B174 OF B358Program : LAKET-PC Page : 11Number 03.7.292-1.0 0 Date 03/06/2000 Created Mon Oct 27 08:45:58 1997 Time 11:24:37.89 Case 0612: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=98.34F 01200; power uCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.15 -.17TOTAL EVAP (CFS) .00 -1.62 -1.32 -1.58NATURAL EVAP (CFS) .00 -.98 -.77 -.95FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.56 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.82 89.62 90.65LAKE INLET TEMP (F) .00 101.47 98.76 101.10LAKE OUTLET TEMP (F) .00 91.72 90.58 91.56------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.8 90.9LAKE INLET TEMP (F) 128.0 109.5 100.9LAKE OUTLET TEMP (F) 99.3 96.9 91.9PROJECT NO. 11333-297 ATTACHMENT BPAGE B175 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 12Date 03/06/2000 Time 11:24:37.89 Case 0612: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=98.34F

@1200; power uTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

LAKE SEEPAGE (CPS) -.15 8051900)TOTAL EVAP (CFS) -.32 8051900)NATURAL EVAP (CFS) .00 7031900)FORCED EVAP (CFS) -.26 7311900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 97.70 7041900)LAKE INLET TEMP (F) 134.74 7011900)LAKE OUTLET TEMP (F) 99.96 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-3.97-2.66-1.55.00.00.00.00.00688.47.0081.7390.9982.507011900)7051900)7051900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7241900)7241900)7241900)-.17-1.58-.95-.63.00.00.00.00.00689.19.0090.65101.1091.56-1.22264E+01

-1.12836E+02

-6.76335E+01

-4.52026E+01 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.00000E+00 4.92116E+04 0.OOOOOE+00 6.47304E+03 7.21878E+03 6.53794E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0128.099.395.8109.596.990.9100.991.9PROJECT NO. 11333-297 ATTACHMENT BPAGE B176 OF B358CALCULATION NO. L-002457REVISION NO. 8ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 1Date : 03/06/2000 Time : 13:05:14.75 Case 0615: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.SF

@1500; power up12 070100 080500 1 13 1 204 1 0.2 5500. 05 690. 690. 1. 682.9981.3579.7578.1529.7022.22099.5R/Is/I423.5341.4260.8181.9102.260.074.6973.2171.7870.3426.7320.00381.2307.2234.7163.792.054.0718999FPLANTTPRISE35.2628.7916 .6816 .2815.3214,9714,5314,2913.8813,4513.3013,3013,3013,2412,7312,7312,5712,4312,2412,0212,0212,0212,0212,0111,4911,4911,4911,4911,4911,4911,4911.4911.0995.086.0PROJECT NO. 11333-297 ATTACHMENT BPAGE B177 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date 03/06/2000 Time : 13:05:14.75 11.0711.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B178 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 3Date : 03/06/2000 Time : 13:05:14.75 9.549.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199 .199.199 .199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B179 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date : 03/06/2000 Time 13:05:14.75 9.199.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.52PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B180 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997Page : 5Date : 03/06/2000 Time : 13:05:14.81 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B181 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page 6Date : 03/06/2000 Time : 13:05:14.86 8.498.498.448.228.228.228 .228 .228.228.228.Z28.228.228.228.228.228.228.228.228.228.228.228.228.28.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22PROJECT NO. 11333-297 CALCULATION NO. L-002457Program :LAKET-PC Number 03.7.292-1.0 0Created Mon Oct 21 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B182 OF B358Page : 7Date : 03/06/2000 Time : 13:05:14.97 ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B183 OF B358Program : LAKET-PC Page 8Number : 03.7.292-1.0 0 Date : 03/06/2000 Created : Mon Oct 27 08:45:58 1997 Time : 13:05:15.36 Case 0615: LaSalle DUS (Updated Worst 5/1/30-Day Temp; Ti=99.5F

@1500; power upRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 82.990 423.500 74.690 381.200689.000 81.350 341.400 73.210 307.200688.000 79.750 260.800 71.780 234.700687.000 78.150 181.900 70.340 163.700686.000 29.700 102.200 26.730 92.000685.000 22.220 60.000 20.000 54.000PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. 99.50 95.00WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B184 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 9Date : 03/06/2000 Time : 13:05:15.36 Case 0615: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.5F

@1500; power upFPLANT70100 -TPRISE70100 -80500 R/I80500 s/i86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.790 16.68014.970 14.53013.450 13.30013.240 12.73012.430 12.24012.020 12.02011.490 11.49011.490 11.49011.070 11.07010.870 10.86010.500 10.50010.500 10.50010.500 10.50010.500 10.5009.990 9.9909.990 9.9909.990 9.9909.990 9.9909.990 9.7209.-700 9.7009.540 9.5409.540 9.5409.540 9.5409.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1508.850 8.8508.850 8.8508.850 8.8508.850 8.8508.850 8.8508.700 8.7008.700 8.7008.700 8.7008.700 8.7008.700 8.700PROJECT NO. 11333-297 16.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700 ATTACHMENT BPAGE B185 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908,4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B186 OF B358Program LAKET-PC Page 10Number 03.7.292-1.0 0 Date 03/06/2000 Created Mon Oct 27 08:45:S8 1997 Time 13:05:15.52 Case 0615: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.5F

@1500; power upSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.17 -.15 -.17TOTAL EVAP (CPS) .00 -1.63 -1.32 -1.59NATURAL EVAP (CFS) .00 -.98 -.77 -.95FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.56 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.79 89.62 90.62LAKE INLET TEMP (F) .00 101.43 98.77 101.06LAKE OUTLET TEMP (F) .00 91.67 90.59 91.52TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.8 90.9LAKE INLET TEMP (F) 127.0 109.0 100.9LAKE OUTLET TEMP (F) 98.8 96.8 91.9PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE 8187 OF B358Program LAKET-PC Page 11Number 03.7.292-1.0 0 Date 03/06/2000 Created Mon Oct 27 08:45:58 1997 Time : 13:08:15.52 Case 0615: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.SF 01500; power upCUMULATIVE SEASONAL SUMMARY:

SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CPS) .00 -.17 -.15 -.17TOTAL EVAP (CPS) .00 -1.63 -1.32 -1.59NATURAL EVAP (CPS) .00 -.98 -.77 -.95FORCED EVAP (CFS) .00 -.65 -.55 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CPS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.56 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.79 89.62 90.62LAKE INLET TEMP (F) .00 101.43 98.77 101.06LAKE OUTLET TEMP (F) .00 91.67 90.59 91.52TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.8 90.9LAKE INLET TEMP (F) 127.0 109.0 100.9LAKE OUTLET TEMP (F) 98.8 96.8 91.9PROJECT NO. 11333-297 ATTACHMENT BPAGE B188 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 12Date : 03/06/2000 Time 13:05:15.52 Case 0615: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.5F

@1500; power upTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE VALUE ( DATE ) VALUE (ACRE-FEET)

LAKE SEEPAGE (CFS) -.15 8051900)TOTAL EVAP (CFS) -.32 8051900)NATURAL EVAP (CFS) .00 7031900)FORCED EVAP (CFS) -.26 7311900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 97.57 7041900)LAKE INLET TEMP (F) 135.23 7011900)LAKE OUTLET TEMP (F) 99.97 7011900)-------------------------------------------..---------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.00-3.20-1.59.00.00.00.00.00688.46.0081.7391.1582.667011900)7051900)7051900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7241900)7241900)7241900)-.17-1.59-.95-63.00.00.00.00.00689.19.0090.62101.0691.52-1.22170E+01

-1.13212E+02

-6. 80232E+01

-4 .51890E+01 0 OOOOOE+00 0 OOOOOE+00 0 OOOOOE+00 0 OOOOOE+00 0 OOOOOE+00

4. 92113E+04 0 OOOOOE+00 6.47104E+03 7.21610E+03 6.53520E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0 95.8 90.9127.0 109.0 100.998.8 96.8 91.9PROJECT NO. 11333-297 ATTACHMENT BPAGE B189 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 1Date 03/03/2000 Time 16:34:23.31 Case 0618: LaSalle UHS (Updated Worst 36-Day Tamp; Ti=100.0F

@1800; power uprat1234507010011690,82.9981.3579.7578.1529.7022.220100 .0R/IS/I080500200.2690.423.5341.4260.8181.9102.260.01 15500.1.74.6973.2171.7870.3426.7320.0006381.2307.2234.7163.792.054.0718999PPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0995.586.0PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B190 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 2Date 03/03/2000 Time : 16:34:23.36 11.0711.0711.0711.0710 .8710.8610.8610.5010. 5010.5010.5010 .5010.5010 .5010 .5010.5010 .5010.5010 .5010 .5010 .5010 .5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B191 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 3Date : 03/03/2000 Time 16:34:23.36 9.549.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B192 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date 03/03/2000 Time : 16:34:23.36 9.199.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.52PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B193 OF B358Page : 5Date : 03/03/2000 Time : 16:34:23.42 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B194 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Page : 6Date : 03/03/2000 Time : 16:34:23.47 8.498.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B195 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 7Date 03/03/2000 Time 16:34:23.58 ENDPROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B196 OF B358REVISION NO. 8Page : 8Date : 03/03/2000 Time : 16:34:23.97 Case 0618: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@1800; power upratRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT20.00DENSITY:62.40 SEEPAGE:.20 LAKE LENGTH:5500.00INITIAL LAKE ELEVATION

=690.00DRAWDOWN CURVEELEVATION 690.000689.000688.000687.000686.000685.000PLOT FILE FREQTOTAL AREA82.99081.35079.75078.15029.70022.2201 INCREMENTS TOTAL VOLUME423,500341.400260.800181.900102.20060.000AT 0 HOURSEFF AREA74.69073.21071.78070.34026.73020.000EFF VOLUME381.200307.200234.700163.70092.00054.000INITIAL FORCED/NATURAL LAKE TEMPS. =100.00 95.50WEATHER STATION ID0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B197 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 9Date 03/03/2000 Time : 16:34:23.97 Case 0618: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@1800; power upratFPLANT70100 -80500TPRISE70100 -80500s/IS/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009. 5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.790 16.68014.970 14.53013.450 13.30013,240 12.73012.430 12.24012.020 12.02011.490 11.49011.490 11.49011.070 11.07010.870 10.86010.500 10.50010.500 10.50010.500 10.50010.500 10.5009.990 9.9909.990 9.9909.990 9.9909.990 9.9909.990 9.7209.700 9.7009.540 9.5409 .540 9.5409.540 9.5409.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1909.190 9.1508.850 8.8508.850 8.8508.850 8.8508.850 8.8508.850 8.8508.700 8.7008.700 8.7008.700 8.7008.700 8.7008.700 8.700PROJECT NO. 11333-297 16.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909 .9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700 ATTACHMENT BPAGE B198 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008 .7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208 .2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208 .7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B199 OF B358Program LAKET-PC Page : 10Number : 03.7.292-1.0 0 Date 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time 16:34:24.13 Case 0618: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@1800; power upratSEASONAL SUIMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP (CFS) .00 -1.37 -1.33 -1.36NATURAL EVAP (CFS) .00 -.74 -.79 -.75FORCED EVAP (CFS) .00 -.62 -.55 -.61PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CPS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.37 688.76 689.29DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.48 92.68 89.07LAKE INLET TEMP (F) .00 99.36 101.66 99.68LAKE OUTLET TEMP (F) .00 89.60 93.49 90.14----------------------------------------------------..

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.3 94.6 88.9LAKE INLET TEMP (F) 125.0 105.6 99.3LAKE OUTLET TEMP (F) 97.7 95.7 90.1PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B200 OF B358Program LAKET-PC Page : 11Number : 03.7.292-1.0 0 Date 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 16:34:24.13 Case 0618: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@1800; power upratCUMULATIVE SEASONAL SUMMARY:

SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP (CFS) .00 -1.37 -1.33 -1.36NATURAL EVAP (CFS) .00 -.74 -.79 -.75FORCED EVAP (CFS) .00 -.62 -.55 -.61PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.37 688.76 689.29DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.48 92.68 89.07LAKE INLET TEMP (F) .00 99.36 101.66 99.68LAKE OUTLET TEMP (F) .00 89.60 93.49 90.14TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.3 94.6 88.9LAK INLET TEMP (F) 125.0 105.6 99.3LAKE OUTLET TEMP (F) 97.7 95.7 90.1PROJECT NO. 11333-297 ATTACHMENT BPAGE B201 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 12Date 03/03/2000 Time 16:34:24.13 Case 0618: LaSalle UHS (Updated Worst 36-Day Temp; Ti=l00.OF

@1800; power upratTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE VALUE ( DATE ) VALUE (ACRE-FEET)

.......................................- ------------------------------LAKE SEEPAGE (CFS) -.15 8051900)TOTAL EVAP (CFS) .22 8031900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) -.22 8031900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 96.90 8031900)LAKE INLET TEMP (F) 133.82 7011900)LAKE OUTLET TEMP (F) 98.56 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.54-3.35-1.77.00.00.00.00.00688.66.0082.0793.0883.557011900)7021900)7021900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7061900)7251900)7061900)-.17-1.36-.75-.61.00.00.00.00.00689.29.0089.0799.6890.14-1.24752E+01

-9.72176E+01

-5. 34099E+01

-4 .38076E+01 0 OOOOOE+00 0 .OOOOOE+00 0 OOOOOE+00 0 OOOOOE+00 0 OOOOOE+00

4. 92185E+04 0.00000E+00 6.35974E+03 7.11789E+03 6.43622E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)96.3 94.6 88.9125.0 105.6 99.397.7 95.7 90.1PROJECT NO. 11333-297 ATTACHMENT BPAGE B202 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 1Date : 03/03/2000 Time : 16:40:56.46 Case 0621: LaSalle UHS (Updated Worst 36-Day Temp; Ti=I00.OF

@2100; power uprat12345718999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0907010011690.82.9981.3579.7578.1529.7022.220100.0R/IS/I080500200.2690.423.5341.4260.8181.9102.260.015500.1.74.6973.2171.7870.3426.7320.0006381.2307.2234.7163.792.054.095 .586.0PROJECT NO. 11333-297 ATTACHMENT BPAGE B203 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date 03/03/2000 Time 16:40:56.46 11.0711.0711.0711.0710.8710.8610.8610 .5010 .5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B204 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 3Date 03/03/2000 Time : 16:40:56.46 9.549.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B205 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Page : 4Date 03/03/2000 Time 16:40:56.46 9.199.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.52PROJECT NO. 11333-297 ATTACHMENT BPAGE B206 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:5s 1997REVISION NO. 8Page : 5Date 03/03/2000 Time 16:40:56.52 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498 .498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B207 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 6Date : 03/03/2000 Time 16:40:56.57 8.498.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B208 OF B358Page : 7Date 03/03/2000 Time 16:40:56.68 ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B209 OF B358Program LAKET-PC Page : 8Number : 03.7.292-1.0 0 Date : 03/03/2000 Created :Mon Oct 27 08:45:58 1997 Time : 16:40:57.07 Case 0621: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@2100; power upratRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 82.990 423.500 74.690 381.200689.000 81.350 341.400 73.210 307.200688.000 79.750 260.800 71.780 234.700687.000 78.150 181.900 70.340 163.700686.000 29.700 102.200 26.730 92.000685.000 22.220 60.000 20.000 54.000PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 100.00 95.50WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B210 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created : Morn Oct 27 08:45:58 1997REVISION NO. 8Page : 9Date 03/03/2000 Time 16:40:57.07 Case 0621: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@2100; power upratFPLANT70100 -80500 R/I86.000TPRISE70100 -80500 S/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010 50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409 .5409.4009.1909.1909.1909.1909.1909.1909 .1909.1909.1909.1909.1908.8508 .8508 .8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908,8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409 .5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008 .7008.7008 .7008 .700PROJECT NO. 11333-297 ATTACHMENT BPAGE B211 OF B358CALCULATION NO. L-0024578.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220REVISION NO. 88.700 8.7008.520 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B212 OF B358Program : LAKET-PC Page 10Number 03.7.292-1.0 0 Date 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 16:40:57.23 Case 0621: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@2100; power upratSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP (CFS) .00 -1.37 -1.36 -1.37NATURAL EVAP (CFS) .00 -.74 -.81 -.75FORCED EVAP (CFS) .00 -.62 -.55 -.61PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.37 688.76 689.29DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.51 92.64 89.09LAKE INLET TEMP (F) .00 99.37 101.59 99.68LAKE OUTLET TEMP (F) .00 89.61 93.40 90.13------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.5 94.7 88.9LAKE INLET TEMP (F) 125.0 105.5 99.3LAKE OUTLET TEMP (F) 97.7 95.8 90.1PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B213 OF B358Program LAKET-PC Page 11Number : 03.7.292-1.0 0 Date 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 16:40:57.23 Case 0621: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@2100; power upratCUMULATIVE SEASONAL SUMM4ARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.18 -.16 -.17TOTAL EVAP (CFS) .00 -1.37 -1.36 -1.37NATURAL EVAP (CFS) .00 -.74 -.81 -.75FORCED EVAP (CFS) .00 -.62 -.55 -.61PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.37 688.76 689.29DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.51 92.64 89.09LAKE INLET TEMP (F) .00 99.37 101.59 99.68LAKE OUTLET TEMP (F) .00 89.61 93.40 90.13TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 96.5 94.7 88.9LAKE INLET TEMP (F) 125.0 105.5 99.3LAKE OUTLET TEMP (F) 97.7 95.8 90.1PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B214 OF B358Page : 12Date 03/03/2000 Time : 16:40:57.23 Case 0621: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@2100; power upratTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

....................................................................................................

LAKE SEEPAGE (CFS) -.15 8051900)TOTAL EVAP (CFS) -.22 8031900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) -.22 8031900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 96.89 8031900)LAKE INLET TEMP (F) 133.61 7011900)LAKE OUTLET TEMP (F) 98.35 7011900)TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.59-3.39-1.76.00.00.00.00.00688.65.0082.1292.9983.607011900)7021900)7021900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7061900)7251900)7061900)-.17-1.37-.75-.61.00.00.00.00.00689.29.0089.0999.6890.13-1.24743E+01

-9.74854E+01

-5.36504E+01

-4.38350E+01 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 4.92185E+04 0.OOOOOE+00 6.36119E+03 7.11760E+03 6.43604E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)96.5 94.7125.0 10s.597.7 95.888.999.390.1PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B215 OF B358REVISION NO. 8Page : 1Date : 03/03/2000 Time : 14:22:34.64 Case 1800: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@ 0000; power upra1234578999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0707010011690.81.3579.7578.1529.7022.2213.421100.0R/IS/I080500200.2690.341.4260.8181.9102.260,043.8095.586.01 15500.1.73.2171.7870.3426.7320.0012.0806307.2234.7163.792.054.039.4PROJECT NO. 11333-297 ATTACHMENT BPAGE B216 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date 03/03/2000 Time 14:22:34.64 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997ATTACHMENT BREVISION NO. 8 PAGE B217 OF B358Page : 3Date : 03/03/2000 Time : 14:22:34.64 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B218 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 4Date 03/03/2000 Time 14:22:34.64 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B219 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page 5Date : 03/03/2000 Time : 14:22:34.69 8.498.498.498.498.498.498.49.8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B220 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 6Date 03/03/2000 Time 14:22:34.75 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B221 OF B358Program : LAKET-PC Page : 7Number 03.7.292-1.0 0 Date : 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time 14:22:35.19 Case 1800: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@ 0000; power upraRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 81.350 341.400 73.210 307.200689.000 79.750 260.800 71.780 234.700688.000 78.150 181.900 70.340 163.700687.000 29.700 102.200 26.730 92.000686.000 22.220 60.000 20.000 54.000685.000 13.420 43.800 12.080 39.400PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS, = 100.00 95.50WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B222 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber :03.7.292-1.00 Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 8Date 03/03/2000 Time 14:22:35.19 Case 1800: LaSalle URS (Updated Worst 36-Day Temp; Ti=100.OF

@ 0000; power upraFPLANT70100 -TPRISE70100 -80500 R/I80500 S/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909 .1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908 .8508 .8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B223 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B224 OF B358Program LAKET-PC Page 9Number : 03.7.292-1.0 0 Date : 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time : 14:22:35.35 Case 1800: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@ 0000; power upraSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.14 -.17TOTAL EVAP (CFS) .00 -1.36 -1.26 -1.35NATURAL EVAP (CFS) .00 -.74 -.70 -.73FORCED EVAP (CFS) .00 -.63 -.56 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00SLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.74 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.61 93.07 89.23LAKE INLET TEMP (F) .00 99.28 101.79 99.63LAKE OUTLET TEMP (F) .00 89.54 93.60 90.11TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 98.0 95.9 89.0LAKE INLET TEMP (F) 125.0 109.3 99.2LAKE OUTLET TEMP (F) 98.8 96.8 89.9PROJECT NO. 11333-297 ATTACHMENT BPAGE B225 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 10Date : 03/03/2000 Time : 14:22:35.35 Case 1800: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@ 0000; power upraCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE.......................................- --------------------LAKE SEEPAGE (CFS) .00 -.17TOTAL EVAP (CFS) .00 -1.36NATURAL EVAP (CFS) .00 -.74FORCED EVAP (CFS) .00 -.63PRECIPITATION (CFS) .00 .00MAKEUP (CFS) .00 .00BLOWDOWN (CFS) .00 .00RUNOFF (CFS) .00 .00DAM SPILL (CFS) .00 .00LAKE ELEVATION (FEET) .00 689.36DISSOLVED SOLIDS (PPM) .00 .00NATURAL LAKE TEMP (F) .00 88.61LAKE INLET TEMP (F) 00 99.28LAKE OUTLET TEMP (F) .00 89.54------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%------------------------------------------------------

-.14-1.26-.70-.56.00.00.00.00.00688.74.0093.07101.7993.60-.17-1.35-.73-.62.00.00.00.00.00689.28.0089.2399.6390.11NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)98.0 95.9 89.0125.0 109.3 99.298.8 96.8 89.9PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B226 OF B358Page : 11Date 03/03/2000 Time 14:22:35.35 Case 1800: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@ 0000; power upraTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

....................................................................................................

LAKE SEEPAGE (CFS) .14 8051900)TOTAL EVAP (CFS) .19 8041900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) .19 8041900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 98.33 8041900)LAKE INLET TEMP (F) 133.28 7011900)LAKE OUTLET TEMP (F) 99.47 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.29-3.34-1.61.00.00.00.00.00688.65.0081.0691.9082.117011900)7021900)7031900)7021900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7071900)7261900)7071900)-.17-1.35-.73-.62.00.00.00.00.00689.28.0089.2399.6390.11-1.20057E+01

-9.63174E+01

-5.23042E+01

-4.40131E+01 0.OOOOOE+00 0.OOOOOE+00 0.00000E+00 0.OOOOOE+00 O.OOOOE+00 4.92177E+04 0.OOOOOE+00 6.37166E+03 7.11400E+03 6.43400E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)98.0125.098.895.9109.396.889.099.289.9PROJECT NO. 11333-297 CALCULATION NO. L-002457REVISION NO. 8ATTACHMENT BPAGE B227 OF B358Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Case 1803: LaSalle UHS (Updated Worst 36-Day Temp; Ti=98.8F Q 0300; power uprat1Page : 1Date 03/03/2000 Time : 14:47:03.57 234578999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0707010011690.81.3579,7578.1529.7022.2213.42198.8R/IS/I080500200.2690.341.4260.8181.9102.260.043.8094.386.01 15500.1.73.2171.7870.3426.7320.0012.0806307.2234.7163.792.054.039.4PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B228 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created !Mon Oct 27 08:45:58 1997Page : 2Date 03/03/2000 Time 14:47:03.57 11.0711.0711.0710.8710.8610.8610.5010.5010 .5010 .5010 5010 .5010 .5010.5010 .5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BREVISION NO. 8 PAGE B229 OF B358Page : 3Date 03/03/2000 Time : 14:47:03.62 9.549.549.549.549.549.S49.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B230 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Page : 4Date 03/03/2000 Time 14:47:03.62 9 .199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708 .708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B231 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page ; 5Date 03/03/2000 Time : 14:47:03.62 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B232 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Page: 6Date : 03/03/2000 Time : 14:47:03.73 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B233 OF B358Page ; 7Date : 03/03/2000 Time : 14:47:04.06 Case 1803: LaSalle UHS (Updated Worst 36-Day Temp; TiRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH:INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EF]690.000 81.350 341.400689.000 79.750 260.800688.000 78.150 181.900687.000 29.700 102.200686.000 22.220 60.000685.000 13.420 43.800PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. 98.80 94WEATHER STATION ID 0.=98.8F @ 0300; power uprat5500.00F AREA73.21071.78070.34026.73020.00012.080EFF VOLUME307.200234.700163.70092.00054.00039.400.30PROJECT NO. 11333-297 ATTACHMENT BPAGE B234 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 8Date : 03/03/2000 Time 14:47:04.12 Case 1803: LaSalle UHS (Updated Worst 36-Day Temp; Ti=98.8F

@ 0300; power upratFPLANT70100 -TPRISE70100 -80500 R/I80500 S/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508. 8508. 7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909 .1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B235 OF B358CALCULATION NO. L-002457REVISION NO. 88. 7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B236 OF B358Program : LAKET-PC Page : 9Number : 03.7.292-1.0 0 Date 03/03/2000 Created :Mon Oct 27 08:45:58 1997 Time : 14:47:04.23 Case 1803: LaSalle UHS (Updated Worst 36-Day Temp; Ti=98.8F

@ 0300; power upratSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.17 -.14 -.17TOTAL EVAP (CFS) .00 -1.36 -1.28 -1.35NATURAL EVAP (CFS) .00 -.73 -.72 -.73FORCED EVAP (CFS) .00 -.63 -.56 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 00 .00SLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.74 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.58 93.08 89.21LAKE INLET TEMP (F) .00 99.26 101.77 99.61LAKE OUTLET TEMP (F) .00 89.52 93.57 90.08TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 98.0 95.8 89.0LAKE INLET TEMP (F) 124.0 109.0 99.1LAKE OUTLET TEMP (F) 99.0 96.8 89.9PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B237 OF B358Program : LAKET-PC Page : 10Number : 03.7.292-1.0 0 Date : 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time : 14:47:04.23 Case 1803: LaSalle UHS (Updated Worst 36-Day Temp; Ti=98.8F

@ 0300; power upratCUMULATIVE SEASONAL SUMMARY:

SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.14 -.17TOTAL EVAP (CrS) .00 -1.36 -1.28 -1.35NATURAL EVAP (CFS) .00 -.73 -.72 -.73FORCED EVAP (CFS) .00 -.63 -.56 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CPS) .00 .00 .00 .00DAM SPILL (CrS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.74 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.58 93.08 89.21LAKE INLET TEMP (F) .00 99.26 101.77 99.61LAKE OUTLET TEMP (F) .00 89.52 93.57 90.08------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%------------------------------------------------------

NATURAL LAKE TEMP (F) 98.0 95.8 89.0LAKE INLET TEMP (F) 124.0 109.0 99.1LAKE OUTLET TEMP (F) 99.0 96.8 89.9PROJECT NO. 11333-297 ATTACHMENT BPAGE B238 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 11Date 03/03/2000 Time 14:47:04.23 Case 1803: LaSalle UHS (Updated Worst 36-Day Temp; Ti=98.8F

@ 0300; power upratTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

....................................................................................................

LAKE SEEPAGE (CFS) -.14 8051900)TOTAL EVAP (CFS) -.19 8041900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) -.19 8041900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 690.00 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 98.32 8041900)LAKE INLET TEMP (F) 132.46 )7011900)

LAKE OUTLET TEMP (F) 99.95 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.28-3.33-1.64.00.00.00.00.00688.65.0081.0691.9182.247011900)7031900)7031900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7071900)7261900)7071900)-.17-1.35-.73-.62.00.00.00.00.00689.28.0089.2199.6190.08-1.20063E+01

-9.63009E+01

-5.23063E+01

-4.39946E+01 0.00000E+00 0.00000E+00 0.OOOOOE+00 0.00000E+00 0.00000E+00 4.92177E+04 0.OOOOOE+00 6.36976E+03 7.11241E+03 6.43251E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)98.0 95.8 89.0224.0 109.0 99.199.0 96.8 89.9PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B239 OF B358REVISION NO. 8Page : 1Date 03/03/2000 Time : 15:04:24.35 Case 1806: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.2F 0 0600; power uprat1234578999FPLANWTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0707010011690.81.3579.7578.1529.7022.2213.42197.2R/Is/I080500200.2690.341.4260.8181.9102.260.043.8092.71 15500.1.73.2171.7870.3426.7320.0012.0806307.2234.7163.792.054.039.486.0PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B240 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 2Date : 03/03/2000 Time : 15:04:24.40 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B241 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 3Date : 03/03/2000 Time 15:04:24.40 9.549.549.549.549.549.549.S49.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199 .199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B242 OF B358403/03/2000 PageDateTimeZ ýZ:.ft:4-v 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708. 708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B243 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Page : 5Date : 03/03/2000 Time : 15:04:24.46 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B244 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 6Date 03/03/2000 Time 15:04:24.51 8.498.448.228.228.228.228.228.228 .228.228 .228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228 .228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B245 OF B358Program : LAKET-PC Page : 7Number 03.7.292-1.0 0 Date : 03/03/2000 Created : Mon Oct 27 08:45:58 1997 Time : 15:04:24.73 Case 1806: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.2F

@ 0600; power upratRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 81.350 341.400 73.210 307.200689.000 79.750 260.800 71.780 234.700688.000 78.150 181.900 70.340 163.700687.000 29.700 102.200 26.730 92.000686.000 22.220 60.000 20.000 54.000685.000 13.420 43.800 12.080 39.400PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 97.20 92.70WEATHER STATION ID 0.PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B246 OF B358Page 8Date : 03/03/2000 Time : 15:04:24.73 Case 1806: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.2F

@ 0600; power upratFPLANT70100 -80500 R/I86.000TPRISE70100 -80500 S/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908,8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010,50010.2709,9909.9909.9909.9909.7009.7009.5409,5409. 5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B247 OF B358CALCULATION NO. L-0024578.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220REVISION NO. 88.700 8.7008.520 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.490 8.4908.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.220 8.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B248 OF B358Program LAKET-PC Page 9Number 03.7.292-1.0 0 Date : 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 15:04:24.90 Case 1806: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.2F

@ 0600; power upratSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.17 -.14 -.17TOTAL EVAP (CPS) .00 -1.36 -1.30 -1.35NATURAL EVAP (CPS) .00 -.73 -7.4 -.73FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CPS) .00 .00 .00 .00MAKEUP (CPS) .00 .00 .00 .00BLOWDOWN (CPS) .00 .00 .00 .00RUNOFF (CPS) .00 .00 .00 .00DAM SPILL (CPS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.74 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.50 93.07 89.14LAKE INLET TEMP (F) .00 99.19 101.74 99.54LAKE OUTLET TEMP (F) .00 89.4S 93.54 90.02------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% SO%NATURAL LAKE TEMP (F) 97.5 95.7 89.0LAKE INLET TEMP (F) 126.0 107.0 99.1LAKE OUTLET TEMP (F) 99.0 96.6 89.9PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B249 OF B358Program : LAKET-PC Page 10Number : 03.7.292-1.0 0 Date 03/03/2000 Created :Mon Oct 27 08:45:58 1997 Time 15:04:24.90 Case 1806: LaSalle UHS (Updated Worst 36-Day Tamp; Ti=97.2F

@ 0600; power upratCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.14 -.17TOTAL EVAP (CFS) .00 -1.36 -1.30 -1.35NATURAL EVAP (CFS) .00 -.73 -.74 -.73FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.74 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.50 93.07 89.14LAKE INLET TEMP (F) .00 99.19 101.74 99.54LAKE OUTLET TEMP (F) .00 89.45 93.54 90.02TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.5 95.7 89.0LAKE INLET TEMP (F) 126.0 107.0 99.1LAKE OUTLET TEMP (F) 99.0 96.6 89.9PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B250 OF B358Page : 11Date 03/03/2000 Time 15:04:24.90 Case 1806: LaSalle UHS (Updated Worst 36-Day Temp; Ti=97.2F

@ 0600; power upratTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

.................................................- -------------------------LAKE SEEPAGE (CFS)TOTAL EVAP (CFS)NATURAL EVAP (CFS)FORCED EVAP (CFS)PRECIPITATION (CFS)MAKEUP (CFS)BLOWDOWN (CFS)RUNOFF (CFS)DAM SPILL (CFS)LAKE ELEVATION (FEET)DISSOLVED SOLIDS (PPM)NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)-.14-.19.00.19.00.00.00.00.00690.00.0098.31131.2299.948051900)8041900)7011900)8041900)7011900)7011900)7011900)7011900)7011900)7011900)7011900)8041900)7011900)7011900)-.20-4.25-3.29-1.69.00.00.00.00.00688.65.0081.0391.9382.087011900)7031900)7031900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7071900)7261900)7071900)-.17-1.35-.73-.62.00.00.00.00.00689.28.0089.1499.5490.02-1.20089E+01

-9.63718E+01

-5.24012E+01

-4.39706E+01 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.OOOOOE+00 4.92178E+04 0.OOOOOE+00 6.36490E+03 7.10792E+03 6.42803E+03 TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.5 95.7 89.0126.0 107.0 99.199.0 96.6 89.9PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B251 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 1Date : 03/03/2000 Time : 15:18:40.69 Case 1E1234578999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212 .0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0709: LaSalle UHS (Updated Worst 36-Day Temp; Ti=96.SF

@ 0900; power uprat07010011690.81.3579.7578.1529.7022.2213.42196.5R/IS/I080500200.2690.341.4260.8181.9102.260.043.8092 .086.01 15500.1.73.2171.7870.3426.7320.0012.0806307.2234.7163.792.054.039.4PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B252 OF B358Page : 2Date 03/03/2000 Time 15:18:40.69 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B253 OF B358CALCULATION NO. L-002457Program LAKET-PCNUmber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 3Date : 03/03/2000 Time : 15:18:40.69 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199,199,199,199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199. 19PROJECT NO. 11333-297 ATTACHMENT BPAGE B254 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date : 03/03/2000 Time : 15:18:40.69 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B255 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 5Date 03/03/2000 Time 15:18:40.75 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B256 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 6Date : 03/03/2000 Time 15:18:40.80 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B257 OF B358Program LAKET-PC Page 7Number : 03.7.292-1.0 0 Date : 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 15:18:41.30 Case 1809: LaSalle UHS (Updated Worst 36-Day Temp; Ti=96.SF

@ 0900; power upratRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 81.350 341.400 73.210 307.200689.000 79.750 260.800 71.780 234.700688.000 78.150 181.900 70.340 163.700687.000 29.700 102.200 26.730 92.000686.000 22.220 60.000 20.000 54.000685.000 13.420 43.800 12.080 39.400PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 96.50 92.00WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B258 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 8Date 03/03/2000 Time 15:18:41.30 Case 1809: LaSalle UHS (Updated Worst 36-Day Temp; Ti=96.SF

@ 0900; power upratFPLANT70100 -80500 R/ITPRISE70100 -80500 S/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909,1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010 .50010.50010 .5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909,1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B259 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B260 OF B358Program : LAKET-PC Page : 9Number 03.7.292-1.00 Date 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 15:18:41.46 Case 1809: LaSalle UHS (Updated Worst 36-Day Temp; Ti=96.5F

@ 0900; power upratSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.17 -.14 -.17TOTAL EVAP (CFS) .00 -1.36 -1.31 -1.35NATURAL EVAP (CFS) .00 -.73 -.76 -.74FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.74 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.47 93.03 89.10LAKE INLET TEMP (F) .00 99.16 101.68 99.51LAKE OUTLET TEMP (F) .00 89.43 93.49 89.99TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 95.6 88.9LAKE INLET TEMP (F) 128.0 106.7 99.1LAKE OUTLET TEMP (F) 99.0 96.6 89.8PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B261 OF B358Program LAKET-PC Page : 10Number : 03.7.292-1.0 0 Date : 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time : 15:18:41.46 Case 1809: LaSalle UHS (Updated Worst 36-Day Temp; Ti=96.5F

@ 0900; power upratCUMULATIVE SEASONAL SUMMARY:

SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.14 -.17TOTAL EVAP (CFS) .00 -1.36 -1.31 -1.35NATURAL EVAP (CFS) .00 -.73 -.76 -.74FORCED EVAP (CFS) .00 -.63 -.55 -.62PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.36 688.74 689.28DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.47 93.03 89.10LAKE INLET TEMP (F) .00 99.16 101.68 99.51LAKE OUTLET TEMP (F) .00 89.43 93.49 89.99------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5%. 50%NATURAL LAKE TEMP (F) 97.0 95.6 88.9LAKE INLET TEMP (F) 128.0 106.7 99.1LAKE OUTLET TEMP (F) 99.0 96.6 89.8PROJECT NO. 11333-297 ATTACHMENT BPAGE B262 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 11Date : 03/03/2000 Time 15:18:41.46 Case 1809: LaSalle UHS (Updated Worst 36-Day Temp; Ti=96.5F

@ 0900; power upratTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE VALUE (ACRE-FEET)

.......................................................................- --------------LAKE SEEPAGE (CFS) -.14 80S1900)TOTAL EVAP (CFS) -.19 8041900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) -.19 8041900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 690.00 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 98.30 8041900)LAKE INLET TEMP (F) 132.78 7011900)LAKE OUTLET TEMP (F) 99.98 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.29-3.28-1.71.00.00.00.00.00688.65.0081.0391.9582.157011900)7031900)7031900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7061900)7251900)7061900)-.17-1.35-74-.62.00.00.00.00.00689.28.0089.1099.5189.99-1.20097E+01

-9.64773E+01

-5.25177E+01

-4.39596E+01 0.OOOOOE+00 0.00000E+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 4.92178E+04 0.OOOOOE+00 6.36216E+03 7.10574E+03 6.42586E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0128.099.095.6106.796.688.999.189.8PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B263 OF B358REVISION NO. 8Page : 1Date 03/07/2000 Time 17:35:13.43 Case 1809: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=96.5F

@ 0900; power u1234507010011690.81.3579.7578.1529.7022.2213.42196.SR/IS/I080500200.2690.341.4260.8181.9102.260.043.8092.086.01 15500.1.73.2171.7870.3426.7320.0012.0806307.2234.7163.792.054.039.478999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913 .8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.07PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B264 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 2Date : 03/07/2000 Time : 17:35:13.49 11.0711.0711.0710.8710.8610.8610.5010.5010 .5010.5010.5010.5010.5010.5010.5010.5010 .5010 .5010 .5010.5010 .5010 .279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B265 OF B358Page : 3Date 03/07/2000 Time 17:35:13.49 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199 .199 .199.199.199 .199.199.199.199.199.199 .199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B266 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date 03/07/2000 Time 17:35:13.49 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B267 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:S8 1997REVISION NO. 8Page : 5Date : 03/07/2000 Time : 17:35:13.49 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B268 OF B358REVISION NO. 8Page : 6Date : 03/07/2000 Time : 17:35:13.54 8.498 .448 .228 .228.228 .228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228 .228 .228 .228 .228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228 .228 .228 .228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BPAGE B269 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 7Date : 03/07/2000 Time 17:35:14.04 Case 1809: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=96.5F

@ 0900; power uRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT20.00DENSITY:62.40 SEEPAGE:.20 LAKE LENGTH:5500.00INITIAL LAKE ELEVATION

=690.00DRAWDOWN CURVEELEVATION 690.000689.000688.000687.000686.000685.000PLOT FILE FREQTOTAL AREA81.35079.75078.15029.70022.22013 .4201 INCREMENTS AXTOTAL VOLUME341.400260.800181.900102.20060.00043.800V 0 HOURSEFF AREA73.21071.78070.34026.73020.00012.080EFF VOLUME307.200234.700163.70092.00054.00039.400INITIAL FORCED/NATURAL LAKE TEMPS. =96.50 92.00WEATHER STATION ID0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B270 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 8Date 03/07/2000 Time 17:35:14.04 Case 1809: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=96.5F

@ 0900; power uFPLANT70100 -TPRISE70100 -80500 R/I80500 S/I86.00035.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008 .7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B271 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908 .4908 .4908 .4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208 .2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B272 OF B358Program LAKET-PC Page 9Number 03.7.292-1.0 0 Date 03/07/2000 Created Mon Oct 27 08:45:58 1997 Time 17:35:14.20 Case 1809: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=96.SF

@ 0900; power uSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.14 -.16TOTAL EVAP (CFS) .00 -1.59 -1.32 -1.55NATURAL EVAP (CFS) .00 -.95 -.76 -.92FORCED EVAP (CFS) .00 -.65 -.56 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.56 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.65 89.93 90.55LAKE INLET TEMP (F) .00 101.11 98.69 100.77LAKE OUTLET TEMP (F) .00 91.37 90.65 91.27TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.8 96.2 90.8LAKE INLET TEMP (F) 127.0 109.3 100.7LAKE OUTLET TEMP (F) 99.0 97.3 91.5PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B273 OF B358Program LAKET-PC Page 10Number 03.7.292-1.0 0 Date 03/07/2000 Created Mon Oct 27 08:45:58 1997 Time 17:35:14.20 Case 1809: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=96.5F

@ 0900; power uCUMULATIVE SEASONAL SUMMARY:

SUMMERQUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.17 -.14 -.16TOTAL EVAP (CFS) .00 -1.59 -1.32 -1.55NATURAL EVAP (CFS) .00 -.95 -.76 -.92FORCED EVAP (CFS) .00 -.65 -.56 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.56 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.65 89.93 90.55LAKE INLET TEMP (F) .00 101.11 98.69 100.77LAKE OUTLET TEMP (F) .00 91.37 90.65 91.27------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%------------------------------------------------------

NATURAL LAKE TEMP (F) 97.8 96.2 90.8LAKE INLET TEMP (F) 127.0 109.3 100.7LAKE OUTLET TEMP (F) 99.0 97.3 91.5PROJECT NO. 11333-297 ATTACHMENT BPAGE B274 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 11Date 03/07/2000 Time 17:35:14.20 Case 1809: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=96.SF

@ 0900; power uTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

....................................................................................................

LAKE SEEPAGE (CFS) -.13 8051900)TOTAL EVAP (CFS) -.24 8051900)NATURAL EVAP (CFS) .00 7031900)FORCED EVAP (CFS) -.23 7311900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 98.25 7041900)LAKE INLET TEMP (F) 132.14 7011900)LAKE OUTLET TEMP (F) 99.79 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.05-2.67-1.56.00.00.00.00.00688.47.0080.4789.6481.387011900)7051900)7051900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7241900)7241900)7241900)-.16-1.55-.92-.63.00.00.00.00.00689.19.0090.55100.7791.27-1.17357E+01

-1.10956E+02

-6.57451E+01

-4.52110E+01 0.00000E+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 4.92117E+04 0.OOOOOE+00 6.46545E+03 7.19565E+03 6.51731E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.8 96.2 90.8127.0 109.3 100.799.0 97.3 91.5PROJECT NO. 11333-297 ATTACHMENT BPAGE B275 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:4S:58 1997REVISION NO. 8Page : 1Date : 03/06/2000 Time : 11:31:44.61 Case 1812: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.5F

@ 1200; power u1234S07010011690,81.3579.7578.1529.7022.2213.42197.5R/IS/I080500200.2690.341.4260.8181.9102.260.043.8093.086.01 15500.1.73.2171.7870.3426.7320.0012.0806307.2234.7163.792.054.039.478999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.07PROJECT NO. 11333-297 ATTACHMENT BPAGE B276 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date 03/06/2000 Time 11:31:44.61 11.0711.0711.0710.8710.8610.8610 .5010 .5010 .5010 .5010 .5010.5010 .5010 .S010 .5010.5010.5010.5010 .5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B277 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 3Date 03/06/2000 Time 11:31:44.61 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199 .199 .199.199 .199.199.199.199 .199 .199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B278 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date 03/06/2000 Time 11:31:44.61 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708.708 .708 .708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B279 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 5Date : 03/06/2000 Time 11:31:44.61 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B280 OF B358CALCULATION NO. L-002457REVISION NO. 8ProgramNumberCreatedLAKET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 6Date : 03/06/2000 Time : 11:31:44.66 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B281 OF B358Program : LAKET-PC Page 7Number 03.7.292-1.0 0 Date 03/06/2000 Created Mon Oct 27 08:45:58 1997 Time 11:31:44.94 Case 1812: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.SF

@ 1200; power uRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 81.350 341.400 73.210 307.200689.000 79.750 260.800 71.780 234.700688.000 78.150 181.900 70.340 163.700687.000 29.700 102.200 26.730 92.000686.000 22.220 60.000 20.000 54.000685.000 13.420 43.800 12.080 39.400PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. 97.50 93.00WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B282 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997Page : 8Date : 03/06/2000 Time : 11:31:44.94 Case 1812: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.5F

@ 1200; power uFPLANT70100 -80500 R/I86.000TPRISE70100 -80500 s/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909 .1909.1909 .1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409 .5409 .5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908 .8508.8508 8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B283 OF B358CALCULATION NO. L-0024578.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220REVISION NO. 88.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B284 OF B358Page 9Date 03/06/2000 Time 11:31:45.10 Case 1812: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.SF

@ 1200; power uSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.17TOTAL EVAP (CFS) .00 -1.60NATURAL EVAP (CFS) .00 -.95FORCED EVAP (CFS) .00 -.65PRECIPITATION (CFS) .00 .00MAKEUP (CFS) .00 .00BLOWDOWN (CFS) .00 .00RUNOFF (CFS) .00 .00DAM SPILL (CFS) .00 .00LAKE ELEVATION (FEET) .00 689.29DISSOLVED SOLIDS (PPM) .00 .00NATURAL LAKE TEMP (F) .00 90.68LAKE INLET TEMP (F) .00 101.14LAKE OUTLET TEMP (F) .00 91.40------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.14-1.32-.76-.56.00.00.00.00.00688.56.0089.9398.6990.65-.16-1.56-.92-.63.00.00.00.00.00689.19.0090.57100.8091.29NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.8128.099.396.0109.197.390.9100.791.5PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B285 OF B358Program : LAKET-PC Page : 10Number : 03.7.292-1.0 0 Date 03/06/2000 Created :Mon Oct 27 08:45:58 1997 Time 11:31:45.10 Case 1812: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.SF

@ 1200; power uCUMULATIVE SEASONAL SUMMARY:

SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CPS) .00 -.17 -.14 -.16TOTAL EVAP (CFS) .00 -1.60 -1.32 -1.56NATURAL EVAP (CFS) .00 -.95 -.76 -.92FORCED EVAP (CPS) .00 -.65 -.56 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CPS) .00 .00 .00 .00RUNOFF (CPS) .00 .00 .00 .00DAM SPILL (CPS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.29 688.56 689.19DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.68 89.93 90.57LAKE INLET TEMP (F) .00 101.14 98.69 100.80LAKE OUTLET TEMP (F) .00 91.40 90.65 91.29TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.8 96.0 90.9LAKE INLET TEMP (F) 128.0 109.1 100.7LAKE OUTLET TEMP (F) 99.3 97.3 91.5PROJECT NO. 11333-297 ATTACHMENT BPAGE B286 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 11Date 03/06/2000 Time 11:31:45.10 Case 1812: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=97.5F

@ 1200; power uTOTAL CUMULATIVE SUMMARYQUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE VALUE (ACRE-FEET)

....................................................................................................

LAKE SEEPAGE (CFS) -.13 8051900)TOTAL EVAP (CFS) .24 8051900)NATURAL EVAP (CFS) .00 7031900)FORCED EVAP (CFS) .23 7311900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 98.22 7041900)LAKE INLET TEMP (F) 134.65 7011900)LAKE OUTLET TEMP (F) 99.98 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.04-2.66-1.67.00.00.00.00.00688.46.0080.4789.6481.377011900)7051900)7051900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7241900)7241900)7241900)-.16-1.56-.92-.63.00.00.00.00.00689.19.0090.57100.8091.29-1.17287E+01

-1.11183E+02

-6.59592E+01

-4.52236E+01 0.00000E+00 0 .OOOOOE+00 0 OOOOOE+00 0 .OOOOOE+00 0 OOOOOE+00

4. 92115E+04 0 .00000E+00 6 .46728E+03 7.19739E+03

6. 51890E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.8 96.0 90.9128.0 109.1 100.799.3 97.3 91.5PROJECT NO. 11333-297 CALCULATION NO. L-002457REVISION NO. 8ATTACHMENT BPAGE B287 OF B358ProgramNumberCreatedLAYET-PC03.7.292-1.0 0Mon Oct 27 08:45:58 1997Page : 1Date : 03/06/2000 Time 13:09:44.55 Case 1815: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.4F

@ 1500; power u1234507010011690.81.3579.7578.1529.7022.2213.42199.4R/IS/I080500200.2690.341.4260 .8181.9102.260.043.8094.91 15500.I.73.2171.7870.3426.7320.0012.0806307.2234.7163.792.054.039.478999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911.0911.0786.0PROJECT NO. 11333-297 ATTACHMENT BPAGE B288 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 2Date 03/06/2000 Time 13:09:44.55 11.0711.0711.0710.8710.8610.8610.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B289 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page 3Date : 03/06/2000 Time 13:09:44.55 9.549.549 .549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.19PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8ATTACHMENT BPAGE B290 OF B358Page : 4Date 03/06/2000 Time : 13:09:44.55 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858 .728.708.708.708.708.708 .708.708.708.708.708.708.708.708.708.708.708.708.708.708.708 .708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B291 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 5Date : 03/06/2000 Time 13:09:44.55 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498 .498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B292 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 6Date : 03/06/2000 Time 13:09:44.66 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B293 OF B358Program : LAKET-PC Page 7Number 03.7.292-1.0 0 Date 03/06/2000 Created :Mon Oct 27 08:45:58 1997 Time 13:09:45.10 Case 1815: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.4F

@ 1500; power uRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 81.350 341.400 73.210 307.200689.000 79.750 260.800 71.780 234.700688.000 78.150 181.900 70.340 163.700687.000 29.700 102.200 26.730 92.000686.000 22.220 60.000 20.000 54.000685.000 13.420 43.800 12.080 39.400PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 99.40 94.90WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B294 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997PageDateTime* 8: 03/06/2000

13:09:45.10 Case 1815: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.4F

@ 1500; power uFPLANT70100 -80500 R/I84. 000TPRISE70100 -80500 s/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011.49011.49011.07010.87010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010.50010.50010.50010.5009.9909.9909.9909.9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1508.8508.8508.8508.8508.8508.7008.7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B295 OF B358CALCULATION NO. L-002457REVISION NO. 88.7008.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908 .4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220PROJECT NO. 11333-297 ATTACHMENT BPAGE B296 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber : 03.7,292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 9Date 03/06/2000 Time : 13:09:45.26 Case 1815: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.4F

@ 1500; power uSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS)TOTAL EVAP (CFS)NATURAL EVAP (CFS)FORCED EVAP (CFS)PRECIPITATION (CFS)MAKEUP (CFS)BLOWDOWN (CFS)RUNOFF (CFS)DAM SPILL (CFS)LAKE ELEVATION (FEET)DISSOLVED SOLIDS (PPM)NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F).00.00.00.00.00.00.00.00.00.00.00.00.00.00-.17-1.60-.96-.65.00.00.00.00.00689.28.0090.67101.1091.37-.14-1.32-.76-.56.00.00.00.00.00688.56.0089.9398.6890.64-.16-1.56-.93-.63.00.00.00.00.00689.18.0090.56100.7791.27TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.8127.099.096.0 90.9109.0 100.797.1 91.6PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B297 OF B358Program : LAKET-PC Page 10Number : 03.7.292-1.0 0 Date : 03/06/2000 Created :Mon Oct 27 08:45:58 1997 Time 13:09:45.26 Case 1815: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.4F

@ 1500; power uCUMULATIVE SEASONAL SUMMARY:

SUMMER MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUELAKE SEEPAGE (CFS) .00 -.17 -.14 -.16TOTAL EVAP (CFS) .00 -1.60 -1.32 -1.56NATURAL EVAP (CFS) .00 -.96 -.76 -.93FORCED EVAP (CFS) .00 -.65 -.56 -.63PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CFS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.28 688.56 689.18DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 90.67 89.93 90.56LAKE INLET TEMP (F) .00 101.10 98.68 100.77LAKE OUTLET TEMP (F) .00 91.37 90.64 91.27TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.8 96.0 90.9LAKE INLET TEMP (F) 127.0 109.0 100.7LAKE OUTLET TEMP (F) 99.0 97.1 91.6PROJECT NO. 11333-297 CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B298 OF B358REVISION NO. 8Page : 11Date 03/06/2000 Time : 13:09:45.26 Case 1815: LaSalle UHS (Updated Worst 5/1/30-Day Temp; Ti=99.4F

@ i500; power uTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE VALUE (ACRE-FEET)

LAKE SEEPAGE (CFS) -.13 8051900)TOTAL EVAP (CFS) -.24 8051900)NATURAL EVAP (CFS) .00 7031900)FORCED EVAP (CFS) -.23 7311900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 98.16 7041900)LAKE INLET TEMP (F) 135.2S 7011900)LAKE OUTLET TEMP (F) 99.99 7011900)------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%------------------------------------------------------

-.20-4.05-3.03-1.61.00.00.00.00.00688.46.0080.4689.6281.367011900)7051900)7051900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7241900)7241900)7241900)-.16-1.56-.93-.63.00.00.00.00.00689.18.0090.56100.7791.27-1.17127E+01

-1.11671E+02

-6.64355E+01

-4.52352E+01 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 0.OOOOOE+00 4.92111E+04 0.OOOOOE+00 6.46670E+03 7.19528E+03 6.51694E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.8 96.0 90.9127.0 109.0 100.799.0 97.1 91.6PROJECT NO. 11333-297 CALCULATION NO. L-002457Program Number 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B299 OF B358REVISION NO. 8Page : 1Date 03/03/2000 Time : 16:37:36.31 Case 1818: LaSalle UtS (Updated Worst 36-Day Temp; Ti=100.0F

@ 1800; power upra1234507010011690.81.3579.7578.1529.7022.2213.421100.0R/IS/I080500200.2690.341.4260.8181.9102.260.043.8095.586.01 15500.I.73.2171.7870.3426.7320.0012.0806307.2234.7163 .792.054.039.478999FPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712,4312.2412,0212.0212.0212.0212.0111.4911.4911.4911.4911.4911.4911.4911.4911. 0911.07PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B300 OF B358REVISION NO. 8Page : 2Date : 03/03/2000 Time : 16:37:36.31 11.0711.0711.0710.8710.8610.8610,5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.5010.279.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.729.709.709.709.709.709.549.549.549.549.54PROJECT NO. 11333-297 ATTACHMENT BPAGE B301 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created : Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 3Date 03/03/2000 Time : 16:37:36.37 9.549.549.549.549.549.549.549.409.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199.199 .199.199.199.199.199.199.199.19PROJECT NO. 11333-297 ATTACHMENT BPAGE B302 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 4Date 03/03/2000 Time 16:37:36.37 9.199.199.158.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.858.728.708.708.708.708 .708.708 .708 .708.708 .708.708.708 .708.708 .708.708.708.708.708.708.708.708.708.708.528.49PROJECT NO. 11333-297 ATTACHMENT BREVISION NO. 8 PAGE B303 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997Page : 5Date 03/03/2000 Time : 16:37:36.37 8.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498.498 .498.498.498.498.498.498.498.498.498.498.498.498.498.498.49PROJECT NO. 11333-297 ATTACHMENT BPAGE B304 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:SB 1997REVISION NO. 8Page : 6Date : 03/03/2000 Time : 16:37:36.42 8.498.448.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228.228 .228.228.228.228.228.228 .228.228.228.228.228.228.228.228.228.228 .228.228.228.228.228.228.228.228.228.228.228.22ENDPROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B305 OF B358Program : LAKET-PC Page 7Number : 03.7.292-1.0 0 Date : 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time : 16:37:36.92 Case 1818: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@ 1800; power upraRUN 36 DAYS FROM 70100 TO 80500PLOT FILE OPTION : 1 CYCLE FLAG: 1WEATHER FILE OPTION: 1 ANEMOMETER HEIGHT 20.00DENSITY:

62.40 SEEPAGE:

.20 LAKE LENGTH: 5500.00INITIAL LAKE ELEVATION

= 690.00DRAWDOWN CURVEELEVATION TOTAL AREA TOTAL VOLUME EFF AREA EFF VOLUME690.000 81.350 341.400 73.210 307.200689.000 79.750 260.800 71.780 234.700688.000 78.150 181.900 70.340 163.700687.000 29.700 102.200 26.730 92.000686.000 22.220 60.000 20.000 54.000685.000 13.420 43.800 12.080 39.400PLOT FILE FREQ 1 INCREMENTS AT 0 HOURSINITIAL FORCED/NATURAL LAKE TEMPS. = 100.00 95.50WEATHER STATION ID 0.PROJECT NO. 11333-297 ATTACHMENT BPAGE B306 OF B358CALCULATION NO. L-002457Program LAKET-PCNUmnber : 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page ; 8Date 03/03/2000 Time 16:37:36.92 Case 1818: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@ 1800; power upraFPLANT70100 -80500R/r86.000TPRISE70100 -80500 S/I35.26015.32013.88013.30012.57012.02011.49011.49011.09011.07010.50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.4009.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7208.7008.7008.7008.70028.79014.97013.45013.24012.43012.02011;49011.49011.07010 .87010 .50010.50010.50010.5009.9909.9909.9909.9909.9909.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.7008 .7008.7008.7008.70016.68014.53013.30012.73012.24012.02011.49011.49011.07010.86010 .50010.50010.50010.5009.9909.9909.9909 .9909.7209.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909. 1909 .1909 .1508.8508.8508.8508.8508.8508.7008. 7008.7008.7008.70016.28014.29013.30012.73012.02012.01011.49011.49011.07010.86010.50010.50010.50010.2709.9909.9909.9909.9909.7009.7009.5409.5409.5409.1909.1909.1909.1909.1909.1909.1909.1909.1909.1909.1908.8508.8508.8508.8508.8508.8508.7008.7008.7008.7008.700PROJECT NO. 11333-297 ATTACHMENT BPAGE B307 OF B358CALCULATION NO. L-0024578.7008.7008.4908.4908.4908.4908.4908.49d8.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.220REVISION NO. 88.7008.5208.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208 .7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908 .4908.4908.4908.4908.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.2208.7008.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4908.4408.2208.2208 .2208.2208.2208.2208.2208.2208,2208.2208 .2208.220PROJECT NO. 11333-297 ATTACHMENT BPAGE B308 OF B358CALCULATION NO. L-002457Program LAKET-PCNumber 03.7.292-1.0 0Created Mon Oct 27 08:45:58 1997REVISION NO. 8Page: 9Date : 03/03/2000 Time : 16:37:37.08 Case 1818: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.OF

@ 1800; power upraSEASONAL SUMMARY FOR SUMMER ( 6/1900 -8/1900 )QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17TOTAL EVAP (CFS) .00 -1.35NATURAL EVAP (CFS) .00 -.72FORCED EVAP (CFS) .00 -.62PRECIPITATION (CFS) .00 .00MAKEUP (CFS) .00 .00BLOWDOWN (CFS) .00 .00RUNOFF (CFS) .00 .00DAM SPILL (CFS) .00 .00LAKE ELEVATION (FEET) .00 689.37DISSOLVED SOLIDS (PPM) .00 .00NATURAL LAKE TEMP (F) .00 88.35LAKE INLET TEMP (F) .00 99.05LAKE OUTLET TEMP (F) .00 89.31------------------------------------------------------

TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.14-1.32-.78-.54.00.00.00.00.00688.75.0092.85101.5093.30-.17-1.34-.73-.61.00.00.00.00.00689.29.0088.9899.3989.87NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0125.098.095.0105.896.088.999.189.8PROJECT NO. 11333-297 ATTACHMENT BCALCULATION NO. L-002457 REVISION NO. 8 PAGE B309 OF B358Program LAKET-PC Page : 10Number 03.7.292-1.0 0 Date : 03/03/2000 Created Mon Oct 27 08:45:58 1997 Time 16:37:37.08 Case 1818: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@ 1800; power upraCUMULATIVE SEASONAL SUMMARY; SUMMER................................................................................

QUANTITY MONTHLY AVERAGES AVERAGEJUN JUL AUG VALUE................................................................................

LAKE SEEPAGE (CFS) .00 -.17 -.14 -.17TOTAL EVAP (CFS) .00 -1.35 -1.32 -1.34NATURAL EVAP (CFS) .00 -.72 -.78 -.73FORCED EVAP (CFS) .00 -.62 -.54 -.61PRECIPITATION (CFS) .00 .00 .00 .00MAKEUP (CPS) .00 .00 .00 .00BLOWDOWN (CFS) .00 .00 .00 .00RUNOFF (CFS) .00 .00 .00 .00DAM SPILL (CFS) .00 .00 .00 .00LAKE ELEVATION (FEET) .00 689.37 688.75 689.29DISSOLVED SOLIDS (PPM) .00 .00 .00 .00NATURAL LAKE TEMP (F) .00 88.35 92.85 88.98LAKE INLET TEMP (F) .00 99.05 101.50 99.39LAKE OUTLET TEMP (F) .00 89.31 93.30 89.87TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%NATURAL LAKE TEMP (F) 97.0 9S.0 88.9LAKE INLET TEMP (F) 125.0 105.8 99.1LAKE OUTLET TEMP (F) 98.0 96.0 89.8PROJECT NO. 11333-297 CALCULATION NO. L-002457Program : LAKET-PCNumber 03,7.292-1.0 0Created : Mon Oct 27 08:45:58 1997ATTACHMENT BPAGE B310 OF B358REVISION NO. 8Page : 11Date 03/03/2000 Time 16:37:37.08 Case 1818: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@ 1800; power upraTOTAL CUMULATIVE SUMMARY....................................................................................................

QUANTITY MAXIMUM MINIMUM AVERAGE TOTAL FLOWVALUE ( DATE ) VALUE ( DATE ) VALUE (ACRE-FEET)

....................................................................................................

LAKE SEEPAGE (CFS) .14 8051900)TOTAL EVAP (CFS) .19 8031900)NATURAL EVAP (CFS) .00 7011900)FORCED EVAP (CFS) .19 8031900)PRECIPITATION (CFS) .00 7011900)MAKEUP (CFS) .00 7011900)BLOWDOWN (CFS) .00 7011900)RUNOFF (CFS) .00 7011900)DAM SPILL (CFS) .00 7011900)LAKE ELEVATION (FEET) 689.99 7011900)DISSOLVED SOLIDS (PPM) .00 7011900)NATURAL LAKE TEMP (F) 98.27 8031900)LAKE INLET TEMP (F) 133.50 7011900)LAKE OUTLET TEMP (F) 98.57 8031900)TEMPERATURE FREQUENCY OF OCCURENCES 1% 5% 50%-.20-4.28-3.21-1.77.00.00.00.00.00688.65.0081.0092.0582.247011900)7021900)7021900)7011900)7011900)7011900)7011900)7011900)7011900)8051900)7011900)7061900)7251900)7061900)-.17-1.34-.73-.61.00.00.00.00.00689.29.0088.9899.3989.87-1.20347E+01

-9.60339E+01

-5. 22645E+01

-4 .37694E+01 0 OOOOOE+00 0 OOOOOE+00 0 OOOOOE+00

0. 00000E+00 0 .OOOOOE+00

4. 92184E+04 0 OOOOOE+00 6.35326E+03 7.09704E+03 6.41702E+03 NATURAL LAKE TEMP (F)LAKE INLET TEMP (F)LAKE OUTLET TEMP (F)97.0 95.0 88.9125.0 105.8 99.198.0 96.0 89.8PROJECT NO. 11333-297 ATTACHMENT BPAGE B311 OF B358CALCULATION NO. L-002457Program : LAKET-PCNumber : 03.7.292-1.0 0Created :Mon Oct 27 08:45:58 1997REVISION NO. 8Page : 1Date : 03/03/2000 Time : 16:42:04.08 Case 1821: LaSalle UHS (Updated Worst 36-Day Temp; Ti=100.0F

@ 2100; power upra12 070100 080500 1 13 1 204 1 0.2 5500. 05 690. 690. 1. 681.3579.7578.1529.7022.2213.421100.0R/IS/I341.4260.8181.9102.260.043.8095.573 .2171.7870.3426.7320.0012.08307.2234.7163.792.054.039.4.7999PPLANTTPRISE35.2628.7916.6816.2815.3214.9714.5314.2913.8813.4513.3013.3013.3013.2412.7312.7312.5712.4312.2412.0212.0212.0212.0212.0111.4911.4911.4911.4911.49311.4911.4911.4911.0911.0786.0PROJECT NO. 11333-297