Text

2003 Annual Effluent Release Report.
	ML041190126
Person / Time
Site:	River Bend
Issue date:	04/20/2004
From:	; Entergy Operations
To:	; Office of Nuclear Reactor Regulation
References
	Download: ML041190126 (103)
	v • d • e

2003 ANNUAL EFFLUENT RELEASE REPORT 113 PREPARED BY:

em'LC I I REVIEWED BY: j1s a-V."E /it o -of 7 V7 REVIEWED BY:

N 20 APP-04 APPROVED BY: I

- v

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 TABLE OF CONTENTS PAGE I. INTRODUCTION 4 II. SUPPLEMENTAL INFORMATION A. Regulatory Limits 4 B. Effluent Concentration Limits 7 C. Measurements and Approximations of Total Radioactivity 7 D. Batch Releases 9 E. Abnormal Releases 10 F. Estimate of Total Error 10 III. GASEOUS EFFLUENT

SUMMARY

INFORMATION 11 IV. LIQUID EFFLUENT

SUMMARY

INFORMATION 11 V. SOLID WASTE 11 VI. RADIOLOGICAL IMPACT ON MAN 11 VII. METEOROLOGICAL DATA 12 VIII. RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION OPERABILITY 12 IX. RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION OPERABILITY 12 X. LIQUID HOLDUP TANKS 12 XI. RADIOLOGICAL ENVIRONMENTAL MONITORING 12 XII. LAND USE CENSUS 12 XIII. OFFSITE DOSE CALCULATION MANUAL (ODCM) 13 XIV. MAJOR CHANGES TO RADIOACTIVE LIQUID, GASEOUS AND SOLID WASTE TREATMENT SYSTEMS 13 XV. PROCESS CONTROL PROGRAM (PCP) 13 TABLES Table 1 Radioactive Gaseous Waste Sampling and Analysis Program 14 Table 2 Radioactive Liquid Waste Sampling and Analysis Program 15 2

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 Table 3A Gaseous Effluent - Summation of All Releases 16 Table 3B Gaseous Effluent - Ground Level Releases 17 Table 3C Gaseous Effluent - Ground Level Batch Release 18 Table 3D Gaseous Effluent - Mixed Mode Continuous Releases 19 Table 3E Gaseous Effluent - Mixed Mode Batch Releases 20 Table 4A Liquid Effluent - Summation of All Releases 21 Table 4B Liquid Effluent - Continuous Mode 22 Table 4C Liquid Effluent - Batch Mode 23 Table 5 Solid Waste and Irradiated Fuel Shipments 24 Table 6 Maximum Individual Doses Due to Noble Gaseous Releases 26 Table 7 Maximum Individual Doses Due to Gaseous Releases 26 Table 8 Maximum Individual Doses Due to Liquid Releases 27 Table 9 Assumptions/Parameters for Doses to Member of the Public Inside Site Boundary 28 Table 10 Doses to Members of the Public on Site from Gaseous Releases 29 Table 11 Meteorological Data - Joint Frequency Tables 30 Table 12 Atmospheric Dispersion Factors 95 ATTACHMENT 1 - Radwaste Process Control Program (PCP) I ATTACHMENT 2 - Offsite Dose Calculation Manual (ODCM) II 3

River Bend Station 2003 Regulatory Guide 1.21 4112/2004 I. INTRODUCTION This is the annual Radioactive Effluent Release Report for the period of January 1, 2003 through December 31, 2003. This report is submitted in accordance with Technical Specification 5.6.3 of Appendix A to River Bend Station (RBS) License Number NPF-47.

There are three corrections to be noted in previous submittals. The 2001 Annual Radiological Effluent Report contained a typgraphical error in the header of the report. The preparation date was shown as April 19, 2001 instead of April 19, 2002. In 2002, the Sr-89 and Sr-90 analysis method for liquids and gases should have been reported as using Scintillation techniques (Chrenkov counting) instead of a gas flow proportional counting.

II. SUPPLEMENTAL INFORMATION A. Regulatory Limits

1. 10CFR5O, Appendix I Limits

a. Fission and Activation Gases In accordance with Technical Requirement 3.11.2.2, the air dose due to noble gases released in gaseous effluent to areas at and beyond the SITE BOUNDARY shall be limited to:

DGamma-Air= gamma air dose from radioactive noble gases in millirad (mrad) n

= 3.17E-8 Z Mi (X/Q) Qi < 5 mrads/qtr i=l < 10 mrads/yr DBeta-Air = beta air dose from radioactive noble gases in millirad (mrad) n

= 3.17E-8 1 Ni (X/Q) Qi < 1O mrads/qtr i=1 < 20 mrads/yr

b. Radioiodine (I-13 1 & I-133) and Particulate In accordance with Technical Requirement 3.11.2.3, the dose to a MEMBER OF THE PUBLIC from iodine-131, iodine-133, tritium and all radionuclides in particulate form with half-lives greater than 8 days, in gaseous effluent releases to areas at and beyond the SITE BOUNDARY shall be limited to:

Dl&gDPc = Dose in mrem to the organ (t) for the age group of interest from radioiodine (1-131, I-133, tritium, and 8 day particulate via the pathway of interest.

n

= 3.17E-08 (Fo) Pi, (X/Q) Qi and I=1 4

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 n

= 3.17E-08 (Fo) E Ri, (D/Q) Qi and 1=1 n

D, = EX DI&8DPT < 7.5 mrem/qtr z=l < 15 mrem/yr (above terms defined in the RBS ODCM)

c. Liquid Effluent In accordance with Technical Requirement 3.11.1.2, the dose or dose commitment to a MEMBER OF THE PUBLIC from radioactive materials in liquid effluent released to UNRESTRICTED AREAS shall be limited to:

D Aj At O j (DF) D, and n

DTOTAL,= EDiT i=1 DTOTAL,= Total dose commitment to the organ (T) due to all releases during the desired time interval in mrem and DTOTAL Total Body < 1.5 mrem/qtr

< 3 mrem/yr DTOTAL Any Organ < 5 mrem/qtr

< IO mrem/yr (above terms defined in RBS ODCM)

2. 40CFRI90 Limits In accordance with Technical Requirement 3.11.4, the annual (calendar year) dose or dose commitment to any MEMBER OF THE PUBLIC, due to releases of radioactivity and to radiation from uranium fuel cycle sources, shall be limited to:

< 25 mrem to the total body or any organ (except the thyroid)

< 75 mrem to the thyroid 5

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004

3. Miscellaneous Limits

a. Technical Requirement 3.11.2.1 - Fission and Activation Gases In accordance with Technical Requirement 3.11.2.1, the dose rate due to radioactive materials released in gaseous effluents from the site to areas at and beyond the SITE BOUNDARY shall be less than or equal to 500 millirems/year (mrem/yr) to the total body and less than or equal to 3000 mrem/yr to the skin:

DRTB = Dose rate to the total body in mrem/yr n

= F Ki (X/Q) Qi <500 mrem/yr and i=1 DRSKIN= Dose rate to the skin in mrem/yr n

= Y Lj+l.lMi (X/Q) Qi <3000mrem/yr i=1 (above terms defined in RBS ODCM)

b. Technical Requirement 3.11.2.1 - Radioiodine (I-13 1 & I-133) and Particulate In accordance with Technical Requirement 3.11.2.1, the dose rate due to iodine- 131, iodine- 133, tritium, and all radionuclides in particulate form with half-lives greater than 8 days released in gaseous effluents from the site to areas at and beyond the SITE BOUNDARY shall be limited to less than or equal to 1500 mrem/yr to any organ:

DRI&8DPT = Dose rate to the organ ' for the age pathway group of interest from Radioiodine (1-131 & I-133)s, tritium, and 8 day particulate via the inhalation pathway in mrem/yr.

n

= Z Pi (X/Q) Qi < 1500 mrem/yr i=1 (above terms defined in RBS ODCM)

c. Technical Requirement 3.11.1.1 - Liquid Effluent In accordance with Technical Requirement 3.11.1.1, the concentration of radioactive material released in liquid effluent to UNRESTRICTED 6

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 AREAS shall be limited to ten times the concentrations specified in 10CFR20, Appendix B, Table 2, Column 2 for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.OE-04 microcuries/milliliter total activity.

d. Technical Requirement 3.11.2.5 - Ventilation Exhaust Treatment System In accordance with Technical Requirement 3.11.2.5, the VENTILATION EXHAUST TREATMENT SYSTEM shall be used to reduce radioactive materials in gaseous waste prior to their discharge when the projected doses, due to gaseous effluent releases to areas and beyond the SITE BOUNDARY would exceed 0.3 mrem to any organ in a 31-day period.

e. Technical Requirement 3.11.1.3 - Liquid Radwaste Treatment System In accordance with Technical Requirement 3.11.1.3, the liquid radwaste treatment system shall be used to reduce the radioactive materials in liquid waste prior to their discharge when the projected doses, due to the liquid effluent, to UNRESTRICTED AREAS would exceed 0.06 mrem to the total body or 0.2 mrem to any organ in a 31-day period.

B. Effluent Concentration Limits I1. Gaseous Releases The concentrations of radioactive gaseous releases are based on the dose rate restrictions in RBS Technical Requirements, rather than the Effluent Concentration Limits (ECL) listed in 10CFR20 Appendix B, Table 2, Column 1.

2. Liquid Releases The Effluent Concentration Limits of radioactive materials in liquid effluent is limited to ten times 10CFR20, Appendix B, Table 2, Column 2.

C. Measurements and Approximations of Total Radioactivity I1. Gaseous Effluent

a. Fission and Activation Gases Periodic grab samples are obtained from the Main Plant Exhaust Duct, Fuel Building Exhaust Vent and Radwaste Building Exhaust Vent.

These samples are analyzed utilizing high purity germanium detectors coupled to computerized pulse height analyzers. The sampling and analysis frequencies are described in Table 1.

7

River Bend Station 2003 Regulatory Guide 1.21 4112/2004 Sampling and analysis of these effluent streams provide noble gas radionuclide relative abundance that can then be applied to the noble gas gross activity and gross activity release rate to obtain nuclide specific activities and release rates. The noble gas gross activity released within a specific time period is determined by integrating the stack monitor release rate over the considered time period. If no activity was detected between the stack grab sample and a significant increase in hourly averages was recorded, the nuclide relative abundance of the last sample (or the last similar event) which indicated the presence of activity was utilized to obtain nuclide specific activities. Correction factors for the monitors are derived and applied for each sampling period whenever noble gas radionuclides are detected in the effluent stream.

b. Particulate and Radioiodine (1-131 & 1-133)

Particulates and Radioiodine (1-131 & 1-133) are continuously sampled from the three release points utilizing a particulate filter and charcoal cartridge in line with a sample pump (stack monitor pump). These filters and charcoal cartridges are removed and analyzed in accordance with the frequencies specified in Table 1. Analysis is performed to identify and quantify radionuclides utilizing high purity germanium detectors coupled to computerized pulse height analyzers. Given the nuclide specific activity concentrations, process flow rate, and time which the sample covered; the nuclide specific activity released to the environment can be obtained. Due to the continuous sampling process, it is assumed that the radioactive material is released to the environment at a constant rate within the sampling period. Sr-89 and Sr-90 are quantitatively analyzed by counting by Scintillation techniques (Chrenkov counting). Gross alpha analysis is performed using a zinc sulfide scintillation counter.

c. Tritium Tritium grab samples are obtained from the three release points at the specified frequencies listed in Table 1 utilizing an ice bath condensation collection method. The collected sample is then analyzed utilizing a Liquid Scintillation Counter. Given the tritium concentration, process flow rate, and time period for which the sample is obtained, the tritium activity released to the environment can be determined. Due to the frequency of sampling, it is assumed that the tritium is released to the environment at a constant rate within the time period for which the sample is obtained.

2. Liquid Effluent Representative grab samples are obtained from the appropriate sample recovery tank and analyzed prior to release of the tank in accordance with the frequencies listed in Table 2. Analysis for gamma emitting nuclides (including dissolved and entrained noble gases) is performed utilizing a high resolution germanium detector coupled to a computerized pulse height analyzer. Tritium 8

River Bend Station 2003 Regulatory Guide 1.21 4112/2004 concentration is determined utilizing a liquid scintillation counter. Sr-89 and Sr-90 are quantitatively analyzed by Scintillation techniques (Chrenkov counting). Fe-55 is counted with a liquid scintillation counter after digestion of the iron. Gross alpha analysis is performed using a zinc sulfide scintillation counter.

Given the nuclide specific activity concentration and total volume of the tank that was released, the activity of each nuclide released to the environment can be determined.

D. Batch Releases I1. Liquid Effluents - BATCH MODE EFFLUENT AND WASTE DISPOSAL REPORT SUPPLEMENTAL INFORMATION LIQUID EFFLUENTS - BATCH MODE REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR

_____e___ofre__ease_

Number of releases 70 113 90 21 294 Total release time minutes 2.58E+04 3.96E+04 3.OOE+04 7.27E+03 1.03E+05 Maximum release time minutes 5.25E+02 8.78E+02 3.72E+02 3.69E+02 8.78E+02 Average release time minutes 3.69E+02 3.50E+02 3.34E+02 3.46E+02 3.49E+02 Minimum release time minutes 0.00E+00 1.OOE+00 0.OOE+00 3.28E+02 0.00E+00 OTRI OTR 2 OTR3 OTR 4 3

Average Miss. River ft / 602,722 649,868 368,196 351,957 stream flow during sec periods of release of effluent into a flowing stream The Mississippi River stream flow is obtained by averaging data from the U. S. Army Corp of Engineers flow gauge at Tarbert Landing.

2. Gaseous Effluents - BATCH MODE There were no batch releases of gaseous effluents from River Bend Station during 2003.

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River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 EFFLUENT AND WASTE DISPOSAL REPORT SUPPLEMENTAL INFORMATION GASEOUS EFFLUENTS - BATCH MODE REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Number of releases 0 0 0 0 0 Total release time minutes 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 O.OOE+00 Maximum release time minutes 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 Average release time minutes 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 Minimum release time minutes 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 E. Abnormal Releases There were no abnormal releases during the reporting period of January 1, 2003 through December 31, 2003.

F. Estimate of Total Error

1. Liquid The maximum error associated with sample collection, laboratory analysis, and discharge volume is collectively estimated to be:

Fission and Activation Products : + 14.2%

Tritium : + 14.2%

Dissolved and Entrained Noble Gases : + 14.2%

Gross Alpha Radioactivity : + 14.2%

2. Gaseous The maximum errors (not including sample line loss) associated with sample flow, process flow, sample collection, monitor accuracy and laboratory analysis are collectively estimated to be:

Noble Gases : + 37.0%

lodines : + 18.6%

Particulate : + 18.6%

Tritium : + 18.2%

3. Determination of Total Error 10

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 The total error (i.e., collective error due to sample collection, laboratory analysis, sample flow, process flow, monitor accuracy, etc.) is calculated using the following equation:

ET = \(EI) + (E 2 ) +

where:

ET = total error EL, E2 ...En = individual errors due to sample collection, laboratory analysis, sample flow, process flow, monitor accuracy, etc.

III. GASEOUS EFFLUENT

SUMMARY

INFORMATION Refer to the Table 3 series for "Summation of All Releases" and "Nuclides Released",

respectively. It should be noted that an entry of "O.OOE+OO" Curie (Ci) or microcurie/second (uCi/sec) in this section indicates that the concentration of the particular radionuclide was below the Lower Limit of Detection (LLD) as listed in Table 1. Also, any nuclide not appearing in the tables was < LLD for all four quarters.

IV. LIQUID EFFLUENT

SUMMARY

INFORMATION Refer to the Table 4 series for "Summation of All Releases and Nuclides Released". It should be noted that an entry of "O.OOE+OO" Ci or uCi/ml in this section indicates that the concentration of the particular radionuclide was below the Lower Limit of Detection (LLD) as listed in Table 2. Also, any nuclide not appearing in the tables was < LLD for all four quarters.

V. SOLID WASTE Refer to Table 7, for "Solid Waste and Irradiated Fuel Shipments".

VI. RADIOLOGICAL IMPACT ON MAN (40CFR190 compliance)

An assessment was made of radiation doses to the likely most-exposed member of the public from River Bend and other nearby uranium fuel cycle sources (none within five miles). The annual (calendar year) dose or dose commitment to any MEMBER OF THE PUBLIC, due to releases of radioactivity and to radiation from uranium fuel cycle sources, shall be limited to less than or equal to 25 mrem to the total body or any organ, except the thyroid, which shall be limited to less than or equal to 75 mrem.

Total Body = 4.60E-01 mrem Skin = 5.95E-01 mrem Thyroid = 6.63E-01 mrem Other Organ = 4.62E-01 mrem 11

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 In addition, an assessment of doses was made for members of the public due to their activities inside the site boundary. Parameters and assumptions utilized to make this determination can be found in Table 9. The results of the calculations can be found in Table 10. The maximally exposed member of the public on site was the lawn service provider who works around the General Services Building lawn twelve hours per day, three days per month, ten months per year. It should be noted that liquid effluent pathway dose was not considered since these individuals would not engage in activities that would allow exposure to this pathway.

VII. METEOROLOGICAL DATA See Tables 11 and 12 for the cumulative joint frequency distributions and annual average data for continuous releases. The meterological recovery for 2003 was 92%.

VIII. RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION OPERABILITY The minimum number of channels required to be OPERABLE as described in Table 3.3.11.2-1 of Technical Requirement 3.3.11.2 were, if inoperable at any time in the period 1/1/03 through 12/31/03, restored to operable status within the required time. Reporting of these inoperable channels in this report is, therefore, not required.

IX. RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION OPERABILITY The minimum number of channels required to be OPERABLE as described in Table 3.3.11.3-1 of Technical Requirement 3.3.11.3 were, if inoperable at any time in the period 1/1/03 through 12/31/03, restored to operable status within the required time. Reporting of inoperable channels is therefore not required in this report.

X. LIQUID HOLD UP TANKS The maximum quantity of radioactive material, excluding tritium and dissolved or entrained noble gases, contained in any unprotected outdoor tank during the period of 1/1/03 through 12/31/03 was less than or equal to the 10 curie limit as required by Technical Specification 5.5.8.b.

XI. RADIOLOGICAL ENVIRONMENTAL MONITORING There were no changes in radiological environmental monitoring locations during the reporting period 1/1/03 through 12/31/03.

XII. LAND USE CENSUS The Land Use Census, as required by Technical Requirement 3.12.2 is performed every two years and was not scheduled to be performed in 2003. The next performance of the Land Use Census is scheduled for 2004.

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River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 XIII. OFFSITE DOSE CALCULATION MANUAL (ODCM)

A revision to the ODCM was made in 2003. A copy of the ODCM is located in Attachment 2 of this document. Each change, except where information was deleted (see below for summary), is identified by markings in the margin of the affected pages, clearly indicating the area of the page that was changed, and indicate the date (i.e., month and year) the change was implemented. All changes were implemented in March 2003.

1. Attachment 14 - added a statement to evaluate the National Guard and/or State Police dose while they are stationed on site as members of the public.

2. Steps 7.2 and 7.3 - changed the parts of these sections that refer to 10CFR20 (as applicable) to TRM 3.11.1.1 to denote the change to ten times the ECL limit.

3. Step 7.2.2.1 - change the ECLi reference from Appendix A to Attachment 2.

4. Formula 7.2.2.1 added a minus (-) sign in the denominator to the fl calculation.

XIV. MAJOR CHANGES TO RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS There were no major changes to the radioactive liquid, gaseous, and solid waste treatment systems for the period of 1/1/03 through 12/31/03.

XV. PROCESS CONTROL PROGRAM (PCP)

The following changes to the PCP (Nuclear Management Manual RW-105) were implemented at RBS on 1/2/03. This change was actually reported in the 2002 annual effluent report because it was approved at the corporate level on 12/30/02. Below is a summary of the changes to the PCP:

Change the procedure classification to Quality vs Non-Quality

Addition of vendor requirement for placement on QSL when performing services under 10CFR61 and 10CFR71 requirements

Updated Section 8 to include all EN-S site commitments These changes are editorial in nature and did not reduce the overall conformance of the solidified waste product to existing criteria for solid wastes.

No additional changes were made in 2003. Attached is a copy of the PCP.

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River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 TABLE 1 Effluent and Waste Disposal Annual Report 2003 Year RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM Gaseous Release Sampling Minimum Type of Activity Lower Limit Type Frequency Analysis Analysis of Detection Frequency (LLD) uCi/ml A. Main Plant M M Principal Gamma Exhaust Duct Grab Sample Emitters 1.OOE-04 H-3 1.OOE-06 B. Fuel Building M M Principal Gamma Ventilation Grab Sample Emitters l.OOE-04 Exhaust Duct H-3 1.OOE-06 C. Radwaste M M Principal Gamma Building Grab Sample Emitters 1.OOE-04 Ventilation Exhaust Duct D. All Release Continuous W 1-131 1.OOE- 12 Types as listed Charcoal in A, B, & C Sample above 1-133 1.OOE-10 Continuous W Principal Gamma Particulate Emitters (I-131, 1.OOE- 11 Sample Others)

Continuous M Gross Alpha Composite 1.OOE-11 Particulate Sample Continuous Q Sr-89, Sr-90 Composite 1.OOE-11 Particulate Sample Continuous Noble Gas Noble Gases Monitor Gross Beta or 1.OOE-06 Gamma W = At least once per 7 days M = At least once per 31 days Q = At least once per 92 days 14

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 TABLE 2 Effluent and Waste Disposal Annual Report 2003 Year RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM Liquid Release Sampling Minimum Type of Activity Lower Limit Type Frequency Analysis Analysis of Detection Frequency (LLD) uCi/ml A. Batch Waste P P Principal Gamma 5.OOE-07 Release (Liquid Each Batch Each Batch Emitters: except Radwaste for Ce-144 5.OOE-06 Recovery Sample Tanks) 1-131 1.OOE-06 P M Dissolved and One Batch/M Entrained Gases 1.00E-05 (Gamma Emitters)

P M H-3 1.OOE-05 Each Batch Composite Gross Alpha 1.OOE-07 P Q Sr-89, Sr-90 5.OOE-08 Each Batch Composite Fe-55 1.OOE-06 P = Prior to each radioactive release M = At least once per 31 days Q = At least once per 92 days 15

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 3A GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES ESTIMATE TOTAL REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 ERROR %

Fission and Activation Gases

1. Total Release Ci 3. 55E+02 3.30E+01 2. 39E+00 1. 02E+00 3. 70E+01

2. Avg. Release Rate uCi/sec 4.57E+01 4. 20E+00 3. OOE-01 1.29E-01

3. % Applicable Limit 1. 08E+00 5. 38E-01 2.22E-02 1. 81E-02 Iodine-131

1. Total Release Ci 4. 95E-03 2. 71E-04 2.54E-04 1.77E-04 1. 86E+01

2. Avg. Release Rate uCi/sec 6.37E-04 3.45E-05 3. 19E-05 2.23E-05

3. % Applicable Limit % (2) 2. 18E+00 2.09E-01 1.08E-01 7. 55E-01 Particulates Half Life >= 8 days

1. Total Release Ci 3. 02E-04 2.23E-04 7. 18E-04 1.37E-03 1. 86E+01

2. Avg. Release Rate uCi/sec 3. 88E-05 2. 84E-05 9. 03E-05 1.72E-04

3. % Applicable Limit % (2) 1.54E-01 4. 07E-02 5. 26E-02 9.38E-02 Tritium

1. Total Release Ci 7. 80E+00 3.32E+00 4 .02E+00 6.64E+00 1.82E+01

2. Avg. Release Rate uCi/sec 1. OOE+00 4.22E-01 5.05E-01 8.35E-01

3. % Applicable Limit % (2) 2 .28E-01 7.29E-02 8.78E-02 1.13E-01

1. Either the gamma air dose limit of 5 mrads/qtr or beta air dose limit of 10 mrads/qtr (T.R. 3.11.2.2.a), which ever is most limiting.

2. The % of applicable limit is determined by comparing the dose contribution to the critical organ limits of TRM 3.11.2.3 16

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 3B GASEOUS EFFLUENTS - GROUND RELEASES - CONTINUOUS MODE REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Gases XE-133 Ci 1.20E+01 2. 35E+01 6. 66E-01 8.23E-01 3.69E+01 XE-133M Ci 1. 79E-01 1.43E-02 0. OOE+00 0 . OOE+00 1. 94E-01 XE-135 Ci 2 .14E+00 6. 08E+00 1.63E-01 2. 01E-01 8. 59E+00 XE-135M Ci 0. OOE+00 0. OOE+00 0. OOE+00 0 . OOE+00 0. OOE+00 Totals for Period... Ci 1.43E+01 2.96E+01 8.29E-01 1.02E+00 4.57E+01 Iodines I-131 Ci 7.48E-05 9.45E-05 0. OOE+00 0. OOE+00 1. 69E-04 I-133 Ci 2. 16E-05 0 . OOE+00 0. OOE+00 0. OOE+00 2. 16E-05 Totals for Period... Ci 9. 64E-05 9.45E-05 0. OOE+00 1. 91E-04 Particulates Half Life >= 8 days CE-141 Ci 0.OOE+00 0. 0OE+00 0. OOE+00 0 . OOE+00 0. OOE+00 CO-57 Ci 0.OOE+00 0. OOE+00 0 .00E+00 0. OOE+00 0. OOE+00 CO-58 Ci 0.OOE+00 0. OOE+00 2. 91E-06 0. OOE+00 2. 91E-06 CO-60 Ci 3.16E-05 4.26E-05 2. 11E-05 2. 05E-05 1. 16E-04 CR-51 Ci 0.OOE+00 0. OOE+00 3. 01E-05 0. OOE+00 3. 01E-05 CS-137 Ci 0.OOE+00 1.22E-07 0. OOE+00 0. OOE+00 1.22E-07 FE-59 Ci 0.OOE+00 4.88E-06 5. 26E-07 0. OOE+00 5.41E-06 MN-54 Ci 1.02E-05 3. 67E-05 1. 18E-05 6. 04E-06 6.47E-05 NB-95 Ci O.OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0 . OOE+00 ZN-65 Ci 0.OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0.OOE+00 Totals for Period... Ci 4.18E-05 8.43E-05 6.64E-05 2.65E-05 2.19E-04 Tritium H-3 Ci 3.03E+00 8.98E-01 1.09E+00 1.27E+00 6.29E+00 Totals for Period... Ci 3.03E+00 8.98E-01 1.09E+00 1.27E+00 6.29E+00 17

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 3C GASEOUS EFFLUENTS - GROUND RELEASES - BATCH MODE REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Gases XE-133 Ci 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 XE-135 Ci 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 XE-135M Ci 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 Totals for Period... Ci 0 . OOE+00 0 . OOE+00 0. OOE+00 0. OOE+00 0 . OOE+00 Iodines

- No Nuclide Activities **

Particulates Half Life >= 8 days CO-60 Ci O.OOE+00 0. OOE+00 0. OOE+00 0 . OOE+00 0. OOE+00 MN-54 Ci O.OOE+00 0. OOE+00 0. OOE+00 0 . OOE+00 0. OOE+00 ZN-65 Ci O.OOE+00 0. OOE+00 0. OOE+00 0 . OOE+00 0. OOE+00 Totals for Period ... Ci O.OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 Tritium

- No Nuclide Activities **

18

RverBed Staio 2003 Regulatory Guide 1.21 4/12/2004 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 3D GASEOUS EFFLUENTS - MIXED MODE RELEASES - CONTINUOUS MODE REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Gases AR-41 Ci 0. 00E+00 0. O0E+00 0. OOE+00 0.0OE+00 0. OOE+00 KR-85 Ci 0. OOE+00 0.OOE+00 0.OOE+00 0. OOE+00 0.OOE+00 KR-85M Ci 3. 58E+00 0.OOE+00 5. 37E-02 0.OOE+00 3. 64E+00 KR-87 Ci 2. 18E+00 0. O0E+00 5. 80E-03 0.OOE+00 2. 18E+00 KR-88 Ci 5.36E+00 0. O0E+00 7.1OE-02 0. OOE+00 5. 43E+00 XE-131M Ci 0.0OE+00 0.OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 XE-133 Ci 2.30E+02 2. 73E+00 2.72E-01 0.OOE+00 2.33E+02 XE-133M Ci 4.31E+00 0.00E+00 0. O0E+00 0.OOE+00 4. 31E+00 XE-135 Ci 7. 80E+01 7. 36E-01 1. 08E+00 0. OOE+00 7. 98E+01 XE-135M Ci 1.52E+01 0. OOE+00 7. 83E-02 0. OOE+00 1. 53E+01 XE-137 Ci 0.OOE+00 0.00E+00 0. 00E+00 0.OOE+00 0. OOE+00 XE-138 Ci 2. 62E+00 0.OOE+00 0. O0E+00 0. OOE+00 2. 62E+00

__4_____

Totals for Period... Ci 3. 41E+02 3. 47E+00 1. 56E+00 0. OOE+00 3.46E+02 Iodines I-131 Ci 4.88E-03 1.76E-04 2. 54E-04 1. 77E-04 5.49E-03 I-133 Ci 9.94E-03 5.20E-04 1. 91E-03 1. 72E-03 1.41E-02 Totals for Period... Ci 1.48E-02 6.96E-04 2. 16E-03 1. 90E-03 1.96E- 02 Particulates Half Life >= 8 days BA-140 Ci 3.99E-05 0.00E+00 0.OOE+00 7.30E-05 1.13E-04 CE-139 Ci 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0. OOE+00 CO-58 Ci 0.OOE+00 0.OOE+00 1.95E-05 1.47E-04 1. 66E-04 CO-60 Ci 1.26E-04 8.33E-05 1.15E-04 3.64E-04 6. 87E-04 CR-51 Ci 0.OOE+00 0.OOE+00 2.63E-04 1.82E-06 2. 65E-04 CS-134 Ci 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 CS-137 Ci 1.45E-05 0.OOE+00 0.OOE+00 0.OOE+00 1.45E-05 FE-59 Ci 0.OOE+00 0.OOE+00 2.43E-05 0.OOE+00 2. 43E-05 MN-54 Ci 1.58E-05 3.37E-05 7.48E-05 1.15E-04 2.39E-04 SR-89 Ci 6.38E-05 1.68E-05 2.82E-05 3.90E-05 1. 48E-04 ZN-65 Ci I0.OOE+00 5.19E-06 1.27E-04 6.02E-04 7. 35E-04 Totals for Period... Ci 2.60E-04 1.39E-04 6.52E-04 1.34E-03 2. 39E-03 Tritium H-3 Ci 4.76E+00 2. 42E+00 2. 93E+00 5.37E+00 1.55E+01 Totals for Period... Ci 4. 76E+00 2.42E+00 2. 93E+00 5. 37E+00 1.55E+01 19

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 EFFLUENT AND WASTE DISPOSAL REPORT SUPPLEMENTAL INFORMATION GASEOUS EFFLUENTS - BATCH MODE Table 3E REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Number of releases 0 0 0 0 0 Total release time minutes 0.OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 Maximum release time minutes 0.OOE+00 0 . OOE+00 0. OOE+00 0. OOE+00 0 . 00E+00 Average release time minutes 0.OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0 . OOE+00 Minimum release time minutes 0.OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0 . OOE+00 20

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 4A LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES ESTIMATE TOTAL REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 ERROR %

Fission and Activation Products

1. Total Release Ci 4. 19E-01 2 . 87E+00 4.23E-01 2.59E-01 1.42E+01

2. Avg. Diluted Conc. uCi/ml 2.97E-07 2. 02E-06 2. 86E-07 1. 80E-07

3. % Applicable Limit % (1) 4. 82E+00 5. 34E+00 6.04E+00 1.30E+00 Tritium

1. Total Release Ci 5 .26E+01 7. 72E+01 3.32E+01 1. 13E+01 1.42E+01

2. Avg. Diluted Conc. uCi/ml 3. 73E-05 5.43E-05 2 .24E-05 7. 85E-06

3. % Applicable Limit % (1) 2.20E-03 4. 88E-03 1.54E-03 1.31E-04 Dissolved and Entrained Gases

1. Total Release Ci 4. 96E-02 2.85E-03 1. 16E-03 7.40E-05 1.42E+01

2. Avg. Diluted Conc. uCi/ml 3.53E-08 2. OOE-09 7.83E-10 5. 15E-ll

3. % Applicable Limit % 1.77E-02 1. OOE-03 3.92E-04 2.59E-05 Gross Alpha Radioactivity

1. Total Release Ci 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 1.42E+01 Volume of liquid waste liters 3.83E+06 6.42E+06 4.93E+06 l.19E+06 Volume of dil. water liters 1.40E+09 1.42E÷09 1.48E+09 1.43E+09 5.70E-01 (1) The most limiting dose compared to the total body and critical organ limits of TRM 3.11.1.2.a.

(2) Technical Requirement 3.11.1.1 limit of 2.OOE-04 uCi/ml for dissolved or entrained noble gases in liquid effluent.

21

River Bend Station 2003 Regulatory Guide 1.21 4/1212004 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 4B LIQUID EFFLUENTS - CONTINUOUS MODE REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Products

- No Nuclide Activities ** ........

Tritium

- No Nuclide Activities **

Dissolved and Entrained Gases

- No Nuclide Activities **

Gross Alpha Radioactivity

- No Nuclide Activities **

22

River Bend Station 2003 Regulatory Guide 1.21 4il2/2004 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 4C LIQUID EFFLUENTS - BATCH MODE REPORT FOR 2003 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Products AG-110M Ci 6.84E-03 8.50E-03 1.33E-03 1.15E-03 1.78E-02 CE-141 Ci 8.64E-04 7.40E-05 0.00E+00 O.00E+00 9.38E-04 CO-58 Ci 2.67E-03 1.78E-02 1.77E-03 1.09E-03 2.34E-02 CO-60 Ci 6.05E-02 4.04E-01 8.57E-02 7.48E-02 6.25E-01 CR-51 Ci 1.74E-02 4.53E-02 2.07E-03 9.33E-03 7.41E-02 CS-137 Ci 1.42E-04 5.64E-05 0.OOE+00 0.00E+00 1.99E-04 FE-55 Ci 1.41E-01 1.09E+00 1.54E-01 1.75E-02 1.40E+00 FE-59 Ci 3.40E-02 1.92E-01 1.03E-02 6.11E-03 2.42E-01 1-131 Ci 2.23E-03 4.62E-04 0.OOE+00 1.39E-05 2.70E-03 I-133 Ci 3.63E-06 0.OOE+00 0.OOE+00 0.OOE+00 3.63E-06 LA-140 Ci 7.32E-04 1.21E-03 1.05E-03 3.08E-04 3.30E-03 MN-54 Ci 1.39E-01 1.03E+00 1.56E-01 1.40E-01 1.47E+00 MO-99 Ci 1.64E-05 0.OOE+00 7.61E-06 1.25E-05 3.66E-05 NA-24 Ci 0.00E+00 1.18E-04 0.OOE+00 0.OOE+00 1.18E-04 NB-95 Ci 8.87E-04 6.85E-03 3.35E-04 2.11E-04 8.29E-03 NB-97 Ci 5.51E-06 3.16E-04 2.25E-04 2.62E-05 5.73E-04 NP-239 Ci 3.48E-05 0.OOE+00 0.OOE+00 0.OOE+00 3.48E-05 RU-105 Ci 6.20E-04 0.OOE+00 0.OOE+00 0.OOE+00 6.20E-04 RU-106 Ci 1.54E-04 0.OOE+00 0.OOE+00 0.OOE+00 1.54E-04 SB-124 Ci 2.34E-03 1.44E-02 9.OOE-04 6.05E-04 1.83E-02 SB-125 Ci 2.03E-04 4.30E-03 6.98E-04 1.17E-03 6.37E-03 SN-113 Ci 1.61E-03 1.08E-02 1.26E-03 9.92E-04 1.46E-02 SR-89 Ci 0.OOE+00 5.45E-04 0.00E+00 0.OOE+00 5.45E-04 SR-92 Ci 2.58E-03 7.90E-03 4.85E-04 4.83E-04 1.14E-02 TC-99M Ci 1.85E-05 0.OOE+00 8.55E-06 1.35E-05 4.06E-05 ZN-65 Ci 4.06E-03 3.54E-02 6.64E-03 5.05E-03 5.12E-02 ZR-95 Ci 1.83E-04 1.69E-03 3.25E-05 1.88E-05 1.92E-03 ZR-97 Ci 1.68E-04 4.09E-05 0.OOE+00 0.OOE+00 2.09E-04 Totals for Period ... Ci 4.18E-01 2.87E+00 4.23E-01 2.59E-01 3.97E+00 Tritium H-3 Ci 5.26E+01 7.72E+01 3.32E+01 1.13E+01 1.74E+02 Totals for Period ... Ci 5.26E+01 7.72E+01 3.32E+01 1.13E+01 1.74E+02 Dissolved and Entrained Gases XE-131M Ci 4.09E-04 0.OOE+00 0.OOE+00 0.OOE+00 4.09E-04 XE-133 Ci 4.44E-02 1.98E-03 5.41E-04 2.57E-05 4.69E-02 XE-133M Ci 9.66E-04 0.OOE+00 0.OOE+00 0.OOE+00 9.66E-04 XE-135 Ci 3.88E-03 8.66E-04 6.18E-04 4.83E-05 5.41E-03 Totals for Period... Ci 4.97E-02 2.85E-03 1.16E-03 7.40E-05 5.37E-02 Gross Alpha Radioactivity

- No Nuclide Activities ** ........ ........ ........ ........ ........

23

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 TABLE 5 Effluent and Waste Disposal Annual Report 2003 Year Solid Waste and Irradiated Fuel Shipments Reporting Period from 01/01/03 to 12/31/03 A. Solid Waste Shipped for Burial or Disposal (Not Irradiated Fuel)

1. Type of Waste Units 12 Month Period Waste Class Estimated Error Spent Resins, Filter m3 3.68E+01 A See Below Sludges, Evaporator Ci 3.48E+02 l Bottoms, Etc. m3 3.54E+00 B See Below Ci 1.59E+02 l m3 1.66E+00 C See Below Ci 1.44E+02 Dry Compressible m3 6.41E+01 See Below Wastes, Contaminated A Equipment, Etc. Ci 5.14E+01 Irradiated Components, m3 0.00E+00 N/A N/A Control Rods, Etc. Ci O.OOE+00 Other m3 0.00E+00 N/A See Below Ci O.00E+00 Note: Volume considered being the total disposal volume of the container.

Radwaste Estimated Error %:

Waste types considered are processed solid waste (i.e. resin, filter media) and non-compactible/compactible dry active waste.

1. Possible Errors

a. Volume

b. Representative Sampling

c. Instrument/Counting

d. Dose to Curie Calculations

2. Volume Error Level indication for processed resins can be determined to +/- 0.5 inches. This correlates to approximately 1.0%. Container manufacturer stated design tolerance allows for 1.0% deviation from container dimensions. Volume error is not applicable to dry active waste.

3. Representative Sampling Error Sampling error for processed resins is based upon obtaining a representative sample from the waste being processed using an iso-lock sampler. Sampling error from dry active waste is based upon obtaining a representative sample from the material being packaged. This error is estimated to be +/- 10% for all waste types, which is consistent with industry standards.

24

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004

4. Instrument/Counting Error The error caused by sample geometry, counting time, sample activity and instrument background is estimated to be +/- 10%. The error for radiological survey instrumentation is estimated to be +/- 20%. This error is applicable to all waste types.

5. Dose to Curie Calculations Error The Dose to Curie method used to calculate activity suffers from analytical accuracy in that certain important parameters are neglected. These parameters are geometry of package, measuring instrument characteristics, build-up, internal attenuation effect, and external media attenuation. An activity correction factor is applied to provide adjustment for these factors.

This error is applicable to all waste types.

2. Estimates of Major Nuclides by Waste Stream Resins, Filters and Dry Compressible Wastes, Evaporator Bottoms, Etc. Contaminated Equipment, Other (Min 1%) Etc. (Min I%)

(Min 1%)

Isotope Isotope % Isotope %

Abundance Abundance Abundance Mn-54 8.321 Mn-54 8.613 N/A N/A Fe-55 68.384 Fe-55 75.196 Co-60 15.576 Fe-59 4.300 Zn-65 2.205 CO-60 10.148 Cs-137 1.178 Ce-144 2.089 A h A & &

Determined by Measurement & Correlation.

Packaged in Strong, Tight Liners.

No Solidification Agent or Absorbent Used.

No Irradiated Components, Control Rods, Etc. were shipped in 2003.

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 12 Truck Barnwell, SC 118 Truck Clive, UT B. Irradiated Fuel Shipments Disposition No Irradiated Components, Control Rods, Etc. were shipped in 2003.

Number of Shipments Mode of Transportation Destination 0 N/A N/A 25

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 TABLE 6 Effluent and Waste Disposal Annual Report 2003 Year Maximum Individual Doses Due to Noble Gas Releases Critical Sector Critical Distance Gamma Dose* Beta Dose

l (mrad) (mrad) 1st Quarter WNW 994m 5.39E-02 7.75E-02 2nd Quarter WNW 994m 2.69E-02 5.34E-02 3rd Quarter WNW 994m 1.11E-03 1.82E-03 4Quarter WNW 994m 9.04E-04 1.81E-03 Annual Total WNW 994m 8.28E-02 1.35E-01

All age groups equally exposed TABLE 7 Effluent and Waste Disposal Annual Report 2003 Year Maximum Individual Doses Due To Gaseous Releases (H3, Radioiodine (1-131 & 1-133) and Particulates)

Significant Organ Dose (mrem)

Critical Critical Critical Critical Critical Sector Distance Age Group Organ Dose 1st Quarter WNW 994m Child Thyroid 1.92E-01 2nd Quarter WNW 994m Child Thyroid 2.42E-02 3rd Quarter WNW 994m Child Thyroid 1.86E-02 4th Quarter WNW 994m Child Thyroid 2.12E-02 Annual Total WNW 994m Child Thyroid 2.56E-01 26

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 TABLE 8 Effluent and Waste Disposal Annual Report 2003 Year Maximum Individual Doses Due to Liquid Releases Critical Receptor: Edge of Initial Mixing Zone Total Body Dose (mrem) Significant Organ Dose (mrem)

Critical Dose Critical Critical Dose Age Age Organ 1st Quarter Adult 1.61E-02 Adult GI Tract 2.41E-01 2nd Quarter Adult 1.78E-01 Adult GI Tract 2.67E+00 3rd Quarter Adult 1.97E-02 Adult GI Tract 2.92E-01 4th Quarter Adult 4.28E-03 Adult GI Tract 6.48E-02 Annual Total Adult 1.63E-01 Adult GI Tract 2.44E+00 27

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 TABLE 9 Effluent and Waste Disposal Annual Report 2003 Year ASSUMPTIONS/PARAMETERS FOR DOSES TO A MEMBER OF THE PUBLIC INSIDE SITE BOUNDARY MEMBER OF LOCATION DISTANCE) 1 ) SECTOR DURATION THE PUBLIC METERS (HR/YEAR)

Delivery Drivers North Parking 275 N 1.25E+02(2) l Lot Lawn Service General Services 115 ENE 3.60E+02(3)

Provider Building People Entering Site Without Alligator Bayou 2500 SW 4.OOE+01 Consent National Guard Activity Center 994 WNW 1.20E+03(5 )

(1) The approximate distances from main plant vent exhaust to location.

(2) A delivery driver is assumed to be on site 0.50/hr per day, 5 days per week, 50 weeks per year.

The adult age group is the only age group considered in this category.

(3) Lawn Service Provider works around the site 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />s/week, three weeks per month, 10 months per year. The dispersion information is conservatively taken as if all work was performed on the General Services Building lawn. The adult age group is the only age group considered in this category.

(4) Liquid pathways dose is not considered due to the nature of activities that individuals are engaged in.

(5) National Guard/State Police are being evaluated, if applicable, for dose while stationed on site as members of the public. The adult age group is the only age group considered in this category.

28

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 TABLE 10 Effluent and Waste Disposal Annual Report 2003 Year DOSES TO MEMBERS OF THE PUBLIC ON SITE FROM GASEOUS RELEASES 2003 Critical Organ Gamma Dose calc Dose Dose Beta Dose Annual based on Annual Annual Annual Duration Durations (mrem) (mrad) (mrad) Factor Delivery Drivers 1.22E-02 3.30E-02 4.30E-02 1.43E-02 Lawn Service 1.1 OE-01 3.44E-01 4.48E-01 4.11 E-02 Provider Alligator 7.12E-05 2.21 E-04 2.88E-04 4.57E-03 Bayou National 2.68E-02 8.08E-02 1.05E-01 1.37E-01 Guard__ _ _ _ __ _ _ _

29

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 Table 11 Effluent and Waste Disposal Annual Report 2003 Year Meteorological Data - Joint Frequency Tables 30

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 6 5 17 17 32 79 55 1 0 0 0 0 212 NNE 6 8 8 37 56 34 4 0 0 0 0 0 153 NE 3 11 25 45 38 32 1 0 0 0 0 0 155 ENE 6 21 14 27 9 7 3 0 0 0 0 0 87 E 1 19 14 16 4 4 2 0 0 0 0 0 60 ESE 3 8 20 29 15 5 0 0 0 0 0 0 80 SE 2 6 13 45 33 27 1 0 0 0 0 0 127 SSE 0 2 3 13 6 32 19 0 0 0 0 0 75 S 0 1 4 13 28 42 32 6 0 0 0 0 126 SSW 0 2 3 13 12 33 38 1 0 0 0 0 102 SW 2 1 6 12 10 23 17 1 0 0 0 0 72 WSW 1 4 5 4 7 27 4 0 0 0 0 0 52 W 0 9 8 8 5 17 5 0 0 0 0 0 52 WNW 4 18 8 7 6 15 8 0 0 0 0 0 66 NW 5 5 13 12 16 34 16 0 0 0 0 0 101 NNW 4 4 13 23 20 53 40 0 0 0 0 0 157 TOTAL 43 124 174 321 297 464 245 9 0 0 0 0 1677 NUMBER OF CALMS: 3 NUMBER OF INVALID HOURS: 480 NUMBER OF VALID HOURS: 1680 TOTAL HOURS FOR THE PERIOD: 2160 31

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS A FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N_____0____0____0_____0____0____5_____1____0____0_____0____0____0_____6_

N 0 0 0 0 0 5 1 0 0 0 0 0 6 NNE 0 1 0 0 0 0 1 0 0 0 0 0 2 NE 0 0 0 1 0 5 0 0 0 0 0 0 6 ENE 0 0 3 0 0 2 0 0 0 0 0 0 5 E 0 0 0 0 0 2 0 0 0 0 0 0 2 ESE 0 0 0 3 3 4 0 0 0 0 0 0 10 SE 0 0 0 0 2 6 0 0 0 0 0 0 8 SSE 0 0 0 1 0 0 1 0 0 0 0 0 2 S 0 0 0 1 0 0 0 2 0 0 0 0 3 SSW 0 0 0 1 0 1 0 0 0 0 0 0 2 SW 0 0 0 1 0 1 1 0 0 0 0 0 3 WSW 0 0 1 1 0 0 0 0 0 0 0 0 2 W 0 0 2 0 0 0 0 0 0 0 0 0 2 WNW 0 0 0 1 0 0 2 0 0 0 0 0 3 NW 0 0 0 0 1 1 1 0 0 0 0 0 3 NNW 0 0 0 0 1 1 1 0 0 0 0 0 3 TOTAL 0 1 6 10 7 28 8 2 0 0 0 0 62 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 62 TOTAL HOURS FOR THE PERIOD: 62 32

Rver Bnd Stio 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- Y.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N_____0____0____0____0____3____3____6_____0____0____0____0____0____12___

N 0 0 0 0 3 3 6 0 0 0 0 0 12 NNE 0 0 0 0 3 0 0 0 0 0 0 0 3 NE 0 0 0 0 2 4 0 0 0 0 0 0 6 ENE 0 0 0 0 0 0 1 0 0 0 0 0 1 E 0 0 0 4 0 1 0 0 0 0 0 0 5 ESE 0 0 0 0 5 0 0 0 0 0 0 0 9 SE 0 0 0 4 2 3 0 0 0 0 0 0 9 SSE 0 0 0 1 1 5 0 0 0 0 0 0 7 S 0 1 0 1 0 3 6 0 0 0 0 0 11 SSW 0 0 0 1 1 2 2 1 0 0 0 0 7 SW 0 0 0 0 0 1 4 0 0 0 0 0 5 WSW 0 0 0 0 0 6 2 0 0 0 0 0 8 W 0 0 0 2 0 2 0 0 0 0 0 0 4 WNW 0 0 0 0 0 1 1 0 0 0 0 0 2 NW 0 0 0 0 1 1 0 0 0 0 0 0 2 NNW 1 0 0 0 1 2 4 0 0 0 0 0 8 TOTAL 1 1 0 13 19 34 26 1 0 0 0 0 95 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 95 TOTAL HOURS FOR THE PERIOD: 95 33

RiverBendStation 2003 ReglatoyGuide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS C FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 3 8 0 0 0 0 0 11 NNE 0 1 0 1 4 2 0 0 0 0 0 0 8 NE 0 0 1 1 3 6 0 0 0 0 0 0 11 ENE 0 0 0 3 4 0 0 0 0 0 0 0 7 E 0 0 0 1 2 0 0 0 0 0 0 0 3 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 1 0 0 0 0 0 0 0 0 1 SSE 0 0 0 0 0 5 1 0 0 0 0 0 6 S 0 0 0 0 2 2 5 1 0 0 0 0 10 SSW 0 0 0 1 0 1 4 0 0 0 0 0 6 SW 0 0 0 0 0 2 1 1 0 0 0 0 4 WSW 0 0 0 0 0 4 1 0 0 0 0 0 5 W 0 0 0 0 0 3 0 0 0 0 0 0 3 WNW 0 1 0 0 0 0 0 0 0 0 0 0 1 NW 1 0 0 0 1 2 0 0 0 0 0 0 4 NNW 0 0 0 0 0 3 2 0 0 0 0 0 5 TOTAL 1 2 1 8 16 33 22 2 0 0 0 0 85 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 85 TOTAL HOURS FOR THE PERIOD: 85 34

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 2 5 23 52 36 1 0 0 0 0 119 NNE 0 0 1 19 41 27 2 0 0 0 0 0 90 NE 0 2 3 13 21 11 1 0 0 0 0 0 51 ENE 0 0 1 21 2 5 2 0 0 0 0 0 31 E 0 0 2 7 0 1 0 0 0 0 0 0 10 ESE 0 1 5 10 5 0 0 0 0 0 0 0 21 SE 0 0 4 6 13 6 1 0 0 0 0 0 30 SSE 0 1 0 5 2 16 15 0 0 0 0 0 39 S 0 0 1 3 11 30 17 3 0 0 0 0 65 SSW 0 0 0 3 6 19 20 0 0 0 0 0 48 SW 0 0 1 2 6 15 8 0 0 0 0 0 32 WSW 0 1 1 2 6 12 0 0 0 0 0 0 22 W 0 1 1 2 4 10 1 0 0 0 0 0 19 WNW 0 1 2 2 6 11 4 0 0 0 0 0 26 NW 0 0 1 3 11 24 10 0 0 0 0 0 49 NNW 0 0 0 6 12 39 28 0 0 0 0 0 85 TOTAL 0 7 25 109 169 278 145 4 0 0 0 0 737 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 737 TOTAL HOURS FOR THE PERIOD: 737 35

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS E FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 1 0 5 11 4 14 4 0 0 0 0 0 39 NNE 0 0 6 13 7 2 1 0 0 0 0 0 29 NE 0 1 19 26 10 6 0 0 0 0 0 0 62 ENE 0 0 2 3 3 0 0 0 0 0 0 0 8 E 0 4 4 3 2 0 2 0 0 0 0 0 15 ESE 1 3 8 13 0 1 0 0 0 0 0 0 26 SE 0 2 4 16 15 12 0 0 0 0 0 0 49 SSE 0 0 0 5 3 6 2 0 0 0 0 0 16 S 0 0 2 4 15 5 4 0 0 0 0 0 30 SSW 0 0 2 2 4 8 11 0 0 0 0 0 27 SW 0 0 2 6 3 3 3 0 0 0 0 0 17 WSW 0 1 2 1 1 3 0 0 0 0 0 0 8 W 0 2 2 2 1 1 4 0 0 0 0 0 12 WNW 0 1 0 4 0 2 1 0 0 0 0 0 8 NW 0 0 2 7 1 5 5 0 0 0 0 0 20 NNW 1 0 4 16 4 6 5 0 0 0 0 0 36 TOTAL 3 14 64 132 73 74 42 0 0 0 0 0 402 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 402 TOTAL HOURS FOR THE PERIOD: 402 36

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 2 3 9 1 2 2 0 0 0 0 0 0 19 NNE 0 1 0 4 0 3 0 0 0 0 0 0 8 NE 0 2 1 3 2 0 0 0 0 0 0 0 8 ENE 0 4 2 0 0 0 0 0 0 0 0 0 6 E 0 6 3 1 0 0 0 0 0 0 0 0 10 ESE 1 3 6 3 2 0 0 0 0 0 0 0 15 SE 2 3 3 6 1 0 0 0 0 0 0 0 15 SSE 0 0 1 1 0 0 0 0 0 0 0 0 2 S 0 0 1 4 0 2 0 0 0 0 0 0 7 SSW 0 1 1 5 1 1 1 0 0 0 0 0 10 SW 1 1 3 2 1 1 0 0 0 0 0 0 9 WSW 0 2 1 0 0 2 1 0 0 0 0 0 6 W 0 1 2 1 0 1 0 0 0 0 0 0 5 WNW 2 5 3 0 0 1 0 0 0 0 0 0 11 NW 2 2 5 1 0 1 0 0 0 0 0 0 11 NNW 1 0 6 1 1 2 0 0 0 0 0 0 11 TOTAL 11 34 47 33 10 16 2 0 0 0 0 0 153 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 153 TOTAL HOURS FOR THE PERIOD: 153 37

River Bend Station 2003 Regulatory Guide 1.21 4/1 2/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS G FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 3 2 1 0 0 0 0 0 0 0 0 0 6 NNE 6 5 1 0 1 0 0 0 0 0 0 0 13 NE 3 6 1 1 0 0 0 0 0 0 0 0 11 ENE 6 17 6 0 0 0 0 0 0 0 0 0 29 E 1 9 5 0 0 0 0 0 0 0 0 0 15 ESE 1 1 1 0 0 0 0 0 0 0 0 0 3 SE 0 1 2 12 0 0 0 0 0 0 0 0 15 SSE 0 1 2 0 0 0 0 0 0 0 0 0 3 S 0 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 1 0 0 0 1 0 0 0 0 0 0 2 SW 1 0 0 1 0 0 0 0 0 0 0 0 2 WSW 1 0 0 0 0 0 0 0 0 0 0 0 1 W 0 5 1 1 0 0 0 0 0 0 0 0 7 WNW 2 10 3 0 0 0 0 0 0 0 0 0 15 NW 2 3 5 1 1 0 0 0 0 0 0 0 12 NNW 1 4 3 0 1 0 0 0 0 0 0 0 9 TOTAL 27 65 31 16 3 1 0 0 0 0 0 0 143 NUMBER OF CALMS: 3 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 146 TOTAL HOURS FOR THE PERIOD: 146 38

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 4 17 37 105 27 1 0 0 0 191 NNE 0 0 4 2 15 77 67 3 0 0 0 0 168 NE 0 1 0 6 4 50 101 5 0 0 0 0 167 ENE 0 0 0 24 11 25 21 6 2 0 0 0 89 E 0 0 0 2 12 31 14 1 1 0 0 0 61 ESE 0 0 0 4 9 24 77 4 0 0 0 0 118 SE 0 0 1 2 3 22 41 3 0 0 0 0 72 SSE 0 0 0 3 8 10 49 6 0 0 0 0 76 S 0 0 1 2 2 34 71 9 3 0 0 0 122 SSW 0 0 0 1 0 18 78 19 0 0 0 0 116 SW 0 1 0 4 5 22 34 14 2 0 0 0 82 WSW 0 0 0 0 12 21 42 3 0 0 0 0 78 W 0 0 1 3 7 23 26 2 0 0 0 0 62 WNW 0 0 0 4 6 17 20 7 0 0 0 0 54 NW 0 0 0 2 5 31 33 11 2 0 0 0 84 NNW 0 1 0 1 4 48 70 15 1 0 0 0 140 TOTAL 0 3 7 64 120 490 849 135 12 0 0 0 1680 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 480 NUMBER OF VALID HOURS: 1680 TOTAL HOURS FOR THE PERIOD: 2160 39

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS A FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N_____ 0_

_ __ 0_

___ 0_

_ _ _ _ 0__ _ _ 0__ _ _ 1__ _ _ _ 6 _ _ _ _ 0 _ _ _ _ 0 _ _ _ _ _0 _ _ _ _0 _ _ _ _0 _ _ _ _ _7 _

N 0 0 0 0 0 1 6 0 0 0 0 0 7 NNE 0 0 0 0 1 0 1 0 0 0 0 0 2 NE 0 0 0 0 0 4 3 1 0 0 0 0 8 ENE 0 0 0 0 0 0 2 0 2 0 0 0 4 E 0 0 0 0 1 1 1 0 1 0 0 0 4 ESE 0 0 0 0 1 2 6 2 0 0 0 0 11 SE 0 0 0 0 0 3 2 0 0 0 0 0 5 SSE 0 0 0 1 0 0 0 1 0 0 0 0 2 S 0 0 0 0 0 1 0 0 2 0 0 0 3 SSW 0 0 0 0 0 0 1 0 0 0 0 0 1 SW 0 0 0 0 0 1 1 0 0 0 0 0 2 WSW 0 0 0 0 1 0 1 0 0 0 0 0 2 W 0 0 0 2 0 0 0 0 0 0 0 0 2 WNW 0 0 0 0 1 0 0 2 0 0 0 0 3 NW 0 0 0 0 0 3 0 2 0 0 0 0 5 NNW 0 0 0 0 0 1 0 0 0 0 0 0 1 TOTAL 0 0 0 3 5 17 24 8 5 0 0 0 62 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 62 TOTAL HOURS FOR THE PERIOD: 62 40

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 1 0 8 2 0 0 0 0 11 NNE 0 0 0 0 0 4 1 0 0 0 0 0 5 NE 0 0 0 0 0 0 6 0 0 0 0 0 6 ENE 0 0 0 0 0 0 1 1 0 0 0 0 2 E 0 0 0 0 1 3 3 0 0 0 0 0 7 ESE 0 0 0 0 0 4 2 0 0 0 0 0 6 SE 0 0 0 0 1 2 4 0 0 0 0 0 7 SSE 0 0 0 0 1 1 5 0 0 0 0 0 7 S 0 0 1 0 0 2 7 1 0 0 0 0 11 SSW 0 0 0 0 0 0 3 2 0 0 0 0 5 SW 0 0 0 0 0 1 0 4 0 0 0 0 5 WSW 0 0 0 0 0 0 10 0 0 0 0 0 10 W 0 0 0 1 1 0 0 0 0 0 0 0 2 WNW 0 0 0 0 0 0 2 1 0 0 0 0 3 NW 0 0 0 0 0 1 1 0 0 0 0 0 2 NNW 0 0 0 0 0 1 4 1 0 0 0 0 6 TO TAL ________0___0 ___1 ___1 ___5 ___1 ______57 ____12 ____0 ___0 ___0 ___0 ___95 __

TOTAL 0 0 1 1 5 19 57 12 0 0 0 0 95 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 95 TOTAL HOURS FOR THE PERIOD: 95 41

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS C FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 2 0 0 7 4 0 0 0 0 13 NNE 0 0 0 0 1 4 1 0 0 0 0 0 6 NE 0 0 0 0 1 6 4 1 0 0 0 0 12 ENE 0 0 0 1 1 1 6 0 0 0 0 0 9 E 0 0 0 0 1 1 0 0 0 0 0 0 2 ESE 0 0 0 0 1 1 0 0 0 0 0 0 2 SE 0 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 6 0 0 0 0 0 6 S 0 0 0 0 0 3 5 2 0 0 0 0 10 SSW 0 0 0 0 0 0 5 0 0 0 0 0 5 SW 0 0 0 0 0 2 1 1 1 0 0 0 5 WSW 0 0 0 0 0 0 5 0 0 0 0 0 5 W 0 0 0 0 0 0 3 0 0 0 0 0 3 WNW 0 0 0 0 0 0 1 0 0 0 0 0 1 NW 0 0 0 0 0 1 1 0 0 0 0 0 2 NNW 0 0 0 0 0 1 3 0 0 0 0 0 4 TOTAL 0 0 0 3 5 20 48 8 1 0 0 0 85 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 85 TOTAL HOURS FOR THE PERIOD: 85 42

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 4 16 64 20 1 0 0 0 105 NNE 0 0 1 0 9 34 46 3 0 0 0 0 93 NE 0 1 0 5 2 20 42 2 0 0 0 0 72 ENE 0 0 0 5 6 10 9 4 0 0 0 0 34 E 0 0 0 1 3 7 2 1 0 0 0 0 14 ESE 0 0 0 4 7 5 15 0 0 0 0 0 31 SE 0 0 1 0 2 6 9 1 0 0 0 0 19 SSE 0 0 0 1 3 2 22 5 0 0 0 0 33 S 0 0 0 1 0 14 35 4 1 0 0 0 55 SSW 0 0 0 1 0 5 36 10 0 0 0 0 52 SW 0 0 0 1 1 8 17 7 1 0 0 0 35 WSW 0 0 0 0 1 5 14 2 0 0 0 0 22 W 0 0 0 0 1 8 12 2 0 0 0 0 23 WNW 0 0 0 0 1 8 11 4 0 0 0 0 24 NW 0 0 0 1 3 17 21 5 2 0 0 0 49 NNW 0 1 0 0 2 18 40 14 1 0 0 0 76 TOTAL 0 2 2 20 45 183 395 84 6 0 0 0 737 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 737 TOTAL HOURS FOR THE PERIOD: 737 43

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS E FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 1 14 18 1 0 0 0 0 34 NNE 0 0 1 1 0 20 15 0 0 0 0 0 37 NE 0 0 0 1 1 14 40 1 0 0 0 0 57 ENE 0 0 0 17 2 4 2 1 0 0 0 0 26 E 0 0 0 0 1 8 4 0 0 0 0 0 13 ESE 0 0 0 0 0 5 25 2 0 0 0 0 32 SE 0 0 0 1 0 7 22 2 0 0 0 0 32 SSE 0 0 0 1 3 3 11 0 0 0 0 0 18 S 0 0 0 0 2 4 18 2 0 0 0 0 26 SSW 0 0 0 0 0 2 25 7 0 0 0 0 34 SW 0 0 0 0 0 4 11 2 0 0 0 0 17 WSW 0 0 0 0 2 4 7 1 0 0 0 0 14 W 0 0 0 0 1 2 4 0 0 0 0 0 7 WNW 0 0 0 1 1 2 4 0 0 0 0 0 8 NW 0 0 0 1 1 2 9 4 0 0 0 0 17 NNW 0 0 0 0 0 13 17 0 0 0 0 0 30 TOTAL 0 0 1 23 15 108 232 23 0 0 0 0 402 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 402 TOTAL HOURS FOR THE PERIOD: 402 44

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 2 10 4 2 0 0 0 0 0 18 NNE 0 0 1 0 1 9 3 0 0 0 0 0 14 NE 0 0 0 0 0 5 3 0 0 0 0 0 8 ENE 0 0 0 0 0 5 1 0 0 0 0 0 6 E 0 0 0 0 3 6 3 0 0 0 0 0 12 ESE 0 0 0 0 0 5 11 0 0 0 0 0 16 SE 0 0 0 1 0 4 2 0 0 0 0 0 7 SSE 0 0 0 0 0 1 2 0 0 0 0 0 3 S 0 0 0 1 0 5 4 0 0 0 0 0 10 SSW 0 0 0 0 0 5 7 0 0 0 0 0 12 SW 0 0 0 0 3 3 4 0 0 0 0 0 10 WSW 0 0 0 0 0 5 5 0 0 0 0 0 10 W 0 0 1 0 1 5 1 0 0 0 0 0 8 WNW 0 0 0 0 0 4 1 0 0 0 0 0 5 NW 0 0 0 0 0 3 1 0 0 0 0 0 4 NNW 0 0 0 0 2 5 3 0 0 0 0 0 10 TOTAL 0 0 2 4 20 74 53 0 0 0 0 0 153 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 153 TOTAL HOURS FOR THE PERIOD: 153 45

River Bend Station 2003 Regulatory Guide 1.21 4112/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS G FROM 1/ 1/03 0:00 TO 3/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 1 2 0 0 0 0 0 0 3 NNE 0 0 1 1 3 6 0 0 0 0 0 0 11 NE 0 0 0 0 0 1 3 0 0 0 0 0 4 ENE 0 0 0 1 2 5 0 0 0 0 0 0 8 E 0 0 0 1 2 5 1 0 0 0 0 0 9 ESE 0 0 0 0 0 2 18 0 0 0 0 0 20 SE 0 0 0 0 0 0 2 0 0 0 0 0 2 SSE 0 0 0 0 1 3 3 0 0 0 0 0 7 S 0 0 0 0 0 5 2 0 0 0 0 0 7 SSW 0 0 0 0 0 6 1 0 0 0 0 0 7 SW 0 1 0 3 1 3 0 0 0 0 0 0 8 WSW 0 0 0 0 8 7 0 0 0 0 0 0 15 W 0 0 0 0 3 8 6 0 0 0 0 0 17 WNW 0 0 0 3 3 3 1 0 0 0 0 0 10 NW 0 0 0 0 1 4 0 0 0 0 0 0 5 NNW 0 0 0 1 0 9 3 0 0 0 0 0 13 TOTAL 0 1 1 10 25 69 40 0 0 0 0 0 146 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 146 TOTAL HOURS FOR THE PERIOD: 146 46

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 18 10 15 42 38 24 12 0 0 0 0 0 159 NNE 10 19 18 44 20 12 1 0 0 0 0 0 124 NE 9 11 13 33 19 8 0 1 0 0 0 0 94 ENE 5 13 12 19 11 3 0 0 1 0 0 1 65 E 4 11 10 13 11 3 1 0 0 0 0 0 53 ESE 3 14 18 30 20 4 0 0 0 0 0 0 89 SE 3 9 27 50 42 39 5 0 0 0 0 0 175 SSE 0 8 11 33 35 66 33 0 0 0 0 0 186 S 2 2 9 18 42 83 116 14 0 0 0 0 286 SSW 4 5 12 16 33 24 25 0 0 0 0 0 119 SW 0 5 8 19 14 18 3 0 0 0 0 0 67 WSW 4 11 17 8 17 19 0 0 0 0 0 0 76 W 2 11 6 10 14 33 0 0 0 0 0 0 76 WNW 6 24 12 23 17 25 3 0 0 0 0 0 110 NW 12 31 13 25 21 19 14 0 0 0 0 0 135 NNW 3 22 20 19 21 32 16 0 0 0 0 0 133 TOTAL 85 206 221 402 375 412 229 15 1 0 0 1 1947 NUMBER OF CALMS: 2 NUMBER OF INVALID HOURS: 235 NUMBER OF VALID HOURS: 1949 TOTAL HOURS FOR THE PERIOD: 2184 47

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS A FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 2 3 1 3 4 0 0 0 0 0 13 NNE 0 3 1 5 4 6 0 0 0 0 0 0 19 NE 0 0 0 3 10 0 0 0 0 0 0 0 13 ENE 0 0 1 2 4 1 0 0 1 0 0 1 10 E 0 0 0 1 2 2 0 0 0 0 0 0 5 ESE 0 4 2 0 5 2 0 0 0 0 0 0 13 SE 0 2 6 4 4 14 2 0 0 0 0 0 32 SSE 0 0 2 2 1 2 5 0 0 0 0 0 12 S 0 0 1 3 4 4 20 3 0 0 0 0 35 SSW 0 0 0 0 1 0 3 0 0 0 0 0 4 SW 0 0 1 1 0 0 3 0 0 0 0 0 5 WSW 0 0 0 0 0 1 0 0 0 0 0 0 1 W 0 0 0 0 0 3 0 0 0 0 0 0 3 WNW 0 0 1 1 0 7 1 0 0 0 0 0 10 NW 1 0 0 3 1 5 5 0 0 0 0 0 15 NNW 0 0 0 1 1 3 6 0 0 0 0 0 11 TOTAL 1 9 17 29 38 53 49 3 1 0 0 1 201 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 201 TOTAL HOURS FOR THE PERIOD: 201 48

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 2 2 6 7 2 0 0 0 0 0 19 NNE 0 0 0 3 3 2 0 0 0 0 0 0 8 NE 0 0 0 2 3 2 0 1 0 0 0 0 8 ENE 0 0 0 0 1 0 0 0 0 0 0 0 1 E 0 0 0 2 0 0 0 0 0 0 0 0 2 ESE 0 0 1 1 4 2 0 0 0 0 0 0 8 SE 0 0 2 1 3 6 0 0 0 0 0 0 12 SSE 0 0 0 1 6 6 4 0 0 0 0 0 17 S 0 0 0 2 3 10 24 3 0 0 0 0 42 SSW 0 0 2 0 1 5 3 0 0 0 0 0 11 SW 0 0 0 1 0 8 0 0 0 0 0 0 9 WSW 0 0 1 1 4 6 0 0 0 0 0 0 12 W 0 0 0 0 2 15 0 0 0 0 0 0 17 WNW 0 0 0 0 3 10 2 0 0 0 0 0 15 NW 0 0 0 0 2 4 4 0 0 0 0 0 10 NNW 0 0 0 1 2 16 6 0 0 0 0 0 25 TOTAL 0 0 8 17 43 99 45 4 0 0 0 0 216 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 216 TOTAL HOURS FOR THE PERIOD: 216 49

River Bend Station 2003 Regulatory Guide 1.21 4112/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS C FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N_____0____0____0_____1____3____2_____0____0____0_____0____0____0_____6_

N 0 0 0 1 3 2 0 0 0 0 0 0 6 NNE 0 0 0 4 3 0 0 0 0 0 0 0 7 NE 0 0 1 2 0 1 0 0 0 0 0 0 4 ENE 0 0 0 1 1 1 0 0 0 0 0 0 3 E 1 0 0 1 2 0 0 0 0 0 0 0 4 ESE 0 1 0 1 2 0 0 0 0 0 0 0 4 SE 0 0 1 3 5 2 0 0 0 0 0 0 11 SSE 0 0 0 0 1 8 3 0 0 0 0 0 12 S 0 0 1 1 2 8 17 1 0 0 0 0 30 SSW 0 0 0 0 0 4 4 0 0 0 0 0 8 SW 0 0 0 0 0 3 0 0 0 0 0 0 3 WSW 0 0 0 0 3 1 0 0 0 0 0 0 4 W 0 0 0 0 4 9 0 0 0 0 0 0 13 WNW 0 0 0 0 4 2 0 0 0 0 0 0 6 NW 0 0 0 1 5 2 1 0 0 0 0 0 9 NNW 0 0 1 0 4 0 0 0 0 0 0 0 5 TOTAL 1 1 4 15 39 43 25 1 0 0 0 0 129 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 129 TOTAL HOURS FOR THE PERIOD: 129 50

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 1 10 19 12 4 0 0 0 0 0 46 NNE 0 1 5 7 8 3 0 0 0 0 0 0 24 NE 0 5 6 16 5 4 0 0 0 0 0 0 36 ENE 0 0 4 7 3 1 0 0 0 0 0 0 15 E 1 0 6 7 5 1 1 0 0 0 0 0 21 ESE 0 2 6 18 5 0 0 0 0 0 0 0 31 SE 0 1 6 19 23 10 3 0 0 0 0 0 62 SSE 0 1 2 4 16 45 21 0 0 0 0 0 89 S 0 0 2 4 16 54 47 5 0 0 0 0 128 SSW 1 1 3 2 13 14 14 0 0 0 0 0 48 SW 0 0 0 8 12 7 0 0 0 0 0 0 27 WSW 0 4 4 5 10 10 0 0 0 0 0 0 33 W 0 0 2 8 6 6 0 0 0 0 0 0 22 WNW 0 3 3 8 9 4 0 0 0 0 0 0 27 NW 2 1 4 12 11 6 3 0 0 0 0 0 39 NNW 0 2 4 4 7 12 3 0 0 0 0 0 32 TOTAL 4 21 58 139 168 189 96 5 0 0 0 0 680 NUMBER OF CALMS: 1 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 681 TOTAL HOURS FOR THE PERIOD: 681 51

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS E FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 3 2 5 12 7 0 2 0 0 0 0 0 31 NNE 0 3 6 18 2 1 1 0 0 0 0 0 31 NE 1 3 4 9 1 1 0 0 0 0 0 0 19 ENE 1 4 4 9 0 0 0 0 0 0 0 0 18 E 1 7 4 2 2 0 0 0 0 0 0 0 16 ESE 1 4 8 10 4 0 0 0 0 0 0 0 27 SE 0 4 10 15 6 7 0 0 0 0 0 0 42 SSE 0 3 4 20 11 5 0 0 0 0 0 0 43 S 1 0 3 6 17 7 5 0 0 0 0 0 39 SSW 0 2 3 14 18 1 1 0 0 0 0 0 39 SW 0 2 3 8 2 0 0 0 0 0 0 0 15 WSW 1 3 8 1 0 1 0 0 0 0 0 0 14 W 2 4 3 2 2 0 0 0 0 0 0 0 13 WNW 3 7 2 12 1 2 0 0 0 0 0 0 27 NW 2 1 2 5 2 2 1 0 0 0 0 0 15 NNW 1 3 2 6 6 1 1 0 0 0 0 0 20 TOTAL 17 52 71 149 81 28 11 0 0 0 0 0 409 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 409 TOTAL HOURS FOR THE PERIOD: 409 52

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 3 2 0 7 2 0 0 0 0 0 0 0 14 NNE 0 5 4 6 0 0 0 0 0 0 0 0 15 NE 1 1 0 1 0 0 0 0 0 0 0 0 3 ENE 1 2 0 0 2 0 0 0 0 0 0 0 5 E 0 4 0 0 0 0 0 0 0 0 0 0 4 ESE 0 1 1 0 0 0 0 0 0 0 0 0 2 SE 2 2 1 7 1 0 0 0 0 0 0 0 13 SSE 0 3 2 5 0 0 0 0 0 0 0 0 10 S 1 2 1 2 0 0 0 1 0 0 0 0 7 SSW 1 2 4 0 0 0 0 0 0 0 0 0 7 SW 0 1 2 1 0 0 0 0 0 0 0 0 4 WSW 1 1 1 1 0 0 0 0 0 0 0 0 4 W 0 3 0 0 0 0 0 0 0 0 0 0 3 WNW 1 4 2 1 0 0 0 0 0 0 0 0 8 NW 3 3 3 4 0 0 0 0 0 0 0 0 13 NNW 0 3 1 6 1 0 0 0 0 0 0 0 11 TOTAL 14 39 22 41 6 0 0 1 0 0 0 0 123 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 123 TOTAL HOURS FOR THE PERIOD: 123 53

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS G FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 12 6 5 7 0 0 0 0 0 0 0 0 30 NNE 10 7 2 1 0 0 0 0 0 0 0 0 20 NE 7 2 2 0 0 0 0 0 0 0 0 0 11 ENE 3 7 3 0 0 0 0 0 0 0 0 0 13 E 1 0 0 0 0 0 0 0 0 0 0 0 1 ESE 2 2 0 0 0 0 0 0 0 0 0 0 4 SE 1 0 1 1 0 0 0 0 0 0 0 0 3 SSE 0 1 1 1 0 0 0 0 0 0 0 0 3 S 0 0 1 0 0 0 3 1 0 0 0 0 5 SSW 2 0 0 0 0 0 0 0 0 0 0 0 2 SW 0 2 2 0 0 0 0 0 0 0 0 0 4 WSW 2 3 3 0 0 0 0 0 0 0 0 0 8 W 0 4 1 0 0 0 0 0 0 0 0 0 5 WNW 2 10 4 1 0 0 0 0 0 0 0 0 17 NW 4 26 4 0 0 0 0 0 0 0 0 0 34 NNW 2 14 12 1 0 0 0 0 0 0 0 0 29 TOTAL 48 84 41 12 0 0 3 1 0 0 0 0 189 NUMBER OF CALMS: 1 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 190 TOTAL HOURS FOR THE PERIOD: 190 54

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 1 1 2 7 15 35 48 1 0 0 0 0 110 NNE 0 1 2 15 22 38 28 2 0 0 0 0 108 NE 0 0 5 7 19 41 48 4 0 0 0 0 124 ENE 0 0 0 12 15 36 58 6 2 0 0 1 130 E 0 1 4 15 14 26 26 2 0 0 0 0 88 ESE 0 1 2 7 8 42 94 7 0 0 0 0 161 SE 1 0 1 4 9 36 68 10 0 0 0 0 129 SSE 0 0 1 7 7 38 82 15 0 0 0 0 150 S 0 0 0 3 12 48 139 73 2 0 0 0 277 SSW 0 0 2 4 10 25 59 19 0 0 0 0 119 SW 0 0 1 4 12 28 29 0 0 0 0 0 74 WSW 0 0 2 6 10 44 17 0 0 0 0 0 79 W 0 1 1 7 13 59 25 1 0 0 0 0 107 WNW 0 1 2 8 20 41 28 0 0 0 0 0 100 NW 0 0 1 8 11 34 36 8 0 0 0 0 98 NNW 0 0 1 4 10 25 52 2 0 0 0 0 94 TOTAL 2 6 27 118 207 596 837 150 4 0 0 1 1948 NUMBER OF CALMS: 1 NUMBER OF INVALID HOURS: 235 NUMBER OF VALID HOURS: 1949 TOTAL HOURS FOR THE PERIOD: 2184 55

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS A FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 2 7 0 0 0 0 0 9 NNE 0 0 0 2 1 7 2 0 0 0 0 0 12 NE 0 0 1 0 4 8 9 1 0 0 0 0 23 ENE 0 0 0 0 0 3 10 0 1 0 0 1 15 E 0 0 0 0 0 2 6 0 0 0 0 0 8 ESE 0 0 1 0 0 7 14 2 0 0 0 0 24 SE 0 0 0 0 2 5 9 2 0 0 0 0 18 SSE 0 0 1 0 2 1 1 3 0 0 0 0 8 S 0 0 0 1 4 3 15 13 0 0 0 0 36 SSW 0 0 0 1 0 1 0 2 0 0 0 0 4 SW 0 0 0 1 0 1 4 0 0 0 0 0 6 WSW 0 0 0 0 0 0 2 0 0 0 0 0 2 W 0 0 0 0 0 0 3 1 0 0 0 0 4 WNW 0 0 0 0 0 1 8 0 0 0 0 0 9 NW 0 0 0 0 0 3 11 2 0 0 0 0 16 NNW 0 0 0 0 0 2 5 0 0 0 0 0 7 TOTAL 0 0 3 5 13 46 106 26 1 0 0 1 201 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 201 TOTAL HOURS FOR THE PERIOD: 201 56

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N_____0____0____0____0____1____5____7_____0____0____0____0____0____13___

N 0 0 0 0 1 5 7 0 0 0 0 0 13 NNE 0 0 0 1 1 7 1 0 0 0 0 0 10 NE 0 0 0 0 0 5 3 0 0 0 0 0 8 ENE 0 0 0 0 0 2 8 0 1 0 0 0 11 E 0 0 0 0 0 2 1 0 0 0 0 0 3 ESE 0 0 0 1 0 4 8 0 0 0 0 0 13 SE 0 0 0 0 0 3 5 1 0 0 0 0 9 SSE 0 0 0 0 1 4 9 2 0 0 0 0 16 S 0 0 0 0 1 6 14 18 0 0 0 0 39 SSW 0 0 0 0 0 2 5 3 0 0 0 0 10 SW 0 0 0 0 0 0 4 0 0 0 0 0 4 WSW 0 0 0 0 1 5 8 0 0 0 0 0 14 W 0 0 0 0 0 16 9 0 0 0 0 0 25 WNW 0 0 0 0 0 4 6 0 0 0 0 0 10 NW 0 0 0 0 0 5 4 2 0 0 0 0 11 NNW 0 0 0 0 0 3 17 0 0 0 0 0 20 TOTAL 0 0 0 2 5 73 109 26 1 0 0 0 216 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 216 TOTAL HOURS FOR THE PERIOD: 216 57

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS C FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 1 4 1 0 0 0 0 0 6 NNE 0 0 0 0 4 3 0 0 0 0 0 0 7 NE 0 0 0 2 1 2 0 0 0 0 0 0 5 ENE 0 0 0 0 1 3 3 0 0 0 0 0 7 E 0 1 0 0 0 2 1 0 0 0 0 0 4 ESE 0 0 0 0 0 3 4 0 0 0 0 0 7 SE 0 0 0 0 2 3 1 0 0 0 0 0 6 SSE 0 0 0 0 1 2 10 2 0 0 0 0 15 S 0 0 0 0 2 5 12 8 0 0 0 0 27 SSW 0 0 0 0 0 2 3 3 0 0 0 0 8 SW 0 0 0 0 0 0 3 0 0 0 0 0 3 WSW 0 0 0 0 0 2 0 0 0 0 0 0 2 W 0 0 0 0 0 14 4 0 0 0 0 0 18 WNW 0 0 0 0 0 3 1 0 0 0 0 0 4 NW 0 0 0 0 1 5 3 0 0 0 0 0 9 NNW 0 0 0 0 0 1 0 0 0 0 0 0 1 TOTAL 0 1 0 2 13 54 46 13 0 0 0 0 129 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 129 TOTAL HOURS FOR THE PERIOD: 129 58

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 6 4 11 13 0 0 0 0 0 34 NNE 0 0 2 8 9 6 7 1 0 0 0 0 33 NE 0 0 2 3 6 14 9 1 0 0 0 0 35 ENE 0 0 0 10 6 12 14 5 0 0 0 0 47 E 0 0 1 7 1 9 14 2 0 0 0 0 34 ESE 0 0 0 4 3 12 25 2 0 0 0 0 46 SE 0 0 1 1 1 7 24 6 0 0 0 0 40 SSE 0 0 0 4 0 8 48 8 0 0 0 0 68 S 0 0 0 2 0 16 75 25 2 0 0 0 120 SSW 0 0 1 2 4 7 29 11 0 0 0 0 54 SW 0 0 0 1 7 13 6 0 0 0 0 0 27 WSW 0 0 2 5 6 17 5 0 0 0 0 0 35 W 0 0 0 4 5 12 6 0 0 0 0 0 27 WNW 0 0 0 4 7 9 3 0 0 0 0 0 23 NW 0 0 1 4 3 13 6 3 0 0 0 0 30 NNW 0 0 0 2 4 6 14 1 0 0 0 0 27 TOTAL 0 0 10 67 66 172 298 65 2 0 0 0 680 NUMBER OF CALMS: 1 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 681 TOTAL HOURS FOR THE PERIOD: 681 59

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS E FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 1 0 2 1 0 3 10 1 0 0 0 0 18 NNE 0 0 0 2 3 6 5 1 0 0 0 0 17 NE 0 0 2 2 5 6 14 2 0 0 0 0 31 ENE 0 0 0 1 7 14 19 1 0 0 0 0 42 E 0 0 2 3 7 8 4 0 0 0 0 0 24 ESE 0 0 0 1 3 11 27 3 0 0 0 0 45 SE 0 0 0 1 4 12 19 1 0 0 0 0 37 SSE 0 0 0 2 1 13 11 0 0 0 0 0 27 S 0 0 0 0 0 9 21 4 0 0 0 0 34 SSW 0 0 1 1 4 8 22 0 0 0 0 0 36 SW 0 0 0 2 3 6 9 0 0 0 0 0 20 WSW 0 0 0 0 0 10 0 0 0 0 0 0 10 W 0 1 0 1 3 4 2 0 0 0 0 0 11 WNW 0 0 2 2 3 14 3 0 0 0 0 0 24 NW 0 0 0 2 3 4 5 1 0 0 0 0 15 NNW 0 0 1 1 4 7 4 1 0 0 0 0 18 TOTAL 1 1 10 22 50 135 175 15 0 0 0 0 409 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 409 TOTAL HOURS FOR THE PERIOD: 409 60

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 3 2 8 0 0 0 0 0 13 NNE 0 0 0 0 1 3 7 0 0 0 0 0 11 NE 0 0 0 0 1 3 8 0 0 0 0 0 12 ENE 0 0 0 0 0 1 3 0 0 0 0 0 4 E 0 0 1 5 3 1 0 0 0 0 0 0 10 ESE 0 0 1 0 1 1 8 0 0 0 0 0 11 SE 0 0 0 1 0 3 9 0 0 0 0 0 13 SSE 0 0 0 0 0 2 2 0 0 0 0 0 4 S 0 0 0 0 1 6 2 1 0 0 0 0 10 SSW 0 0 0 0 1 3 0 0 0 0 0 0 4 SW 0 0 0 0 2 0 1 0 0 0 0 0 3 WSW 0 0 0 0 1 2 0 0 0 0 0 0 3 W 0 0 0 1 3 0 0 0 0 0 0 0 4 WNW 0 1 0 0 2 3 0 0 0 0 0 0 6 NW 0 0 0 2 1 0 4 0 0 0 0 0 7 NNW 0 0 0 0 0 1 7 0 0 0 0 0 8 TOTAL 0 1 2 9 20 31 59 1 0 0 0 0 123 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 123 TOTAL HOURS FOR THE PERIOD: 123 61

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS G FROM 4/ 1/03 0:00 TO 6/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 1 0 0 6 8 2 0 0 0 0 0 17 NNE 0 1 0 2 3 6 6 0 0 0 0 0 18 NE 0 0 0 0 2 3 5 0 0 0 0 0 10 ENE 0 0 0 1 1 1 1 0 0 0 0 0 4 E 0 0 0 0 3 2 0 0 0 0 0 0 5 ESE 0 1 0 1 1 4 8 0 0 0 0 0 15 SE 1 0 0 1 0 3 1 0 0 0 0 0 6 SSE 0 0 0 1 2 8 1 0 0 0 0 0 12 S 0 0 0 0 4 3 0 4 0 0 0 0 11 SSW 0 0 0 0 1 2 0 0 0 0 0 0 3 SW 0 0 1 0 0 8 2 0 0 0 0 0 11 WSW 0 0 0 1 2 8 2 0 0 0 0 0 13 W 0 0 1 1 2 13 1 0 0 0 0 0 18 WNW 0 0 0 2 8 7 7 0 0 0 0 0 24 NW 0 0 0 0 3 4 3 0 0 0 0 0 10 NNW 0 0 0 1 2 5 5 0 0 0 0 0 13 TOTAL 1 3 2 11 40 85 44 4 0 0 0 0 190 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 190 TOTAL HOURS FOR THE PERIOD: 190 62

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 22 37 21 47 38 38 9 0 0 0 0 0 212 NNE 19 16 18 56 43 20 2 0 0 0 0 0 174 NE 12 27 20 32 31 12 0 0 0 0 0 0 134 ENE 6 20 25 20 9 16 0 0 0 0 0 0 96 E 10 17 15 22 10 1 0 0 0 0 0 0 75 ESE 6 29 25 28 15 1 0 0 0 0 0 0 104 SE 6 13 33 61 55 39 3 0 0 0 0 0 210 SSE 3 11 19 38 51 42 8 0 0 0 0 0 172 S 4 13 11 39 34 32 10 0 0 0 0 0 143 SSW 5 12 18 46 32 18 2 0 0 0 0 0 133 SW 4 21 23 36 26 11 0 0 0 0 0 0 121 WSW 4 15 11 20 23 27 0 0 0 0 0 0 100 W 7 16 14 17 31 38 0 0 0 0 0 0 123 WNW 7 20 16 23 24 20 4 0 0 0 0 0 114 NW 18 28 10 25 13 14 0 0 0 0 0 0 108 NNW 21 22 20 33 21 39 3 0 0 0 0 0 159 TOTAL 154 317 299 543 456 368 41 0 0 0 0 0 2178 NUMBER OF CALMS: 11 NUMBER OF INVALID HOURS: 19 NUMBER OF VALID HOURS: 2189 TOTAL HOURS FOR THE PERIOD: 2208 63

River Bend Station 2003 Regulatory Guide 1.21 4/1212004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS A FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 1 5 15 5 0 0 0 0 0 26 NNE 0 0 0 0 9 8 1 0 0 0 0 0 18 NE 0 0 1 2 9 8 0 0 0 0 0 0 20 ENE 0 0 0 0 4 16 0 0 0 0 0 0 20 E 0 0 0 1 3 1 0 0 0 0 0 0 5 ESE 0 0 0 0 2 1 0 0 0 0 0 0 3 SE 0 0 0 0 6 10 2 0 0 0 0 0 18 SSE 0 0 0 0 4 11 4 0 0 0 0 0 19 S 0 0 0 0 2 10 2 0 0 0 0 0 14 SSW 0 0 0 0 0 2 0 0 0 0 0 0 2 SW 0 0 0 0 3 0 0 0 0 0 0 0 3 WSW 0 0 0 0 0 5 0 0 0 0 0 0 5 W 0 0 0 0 0 9 0 0 0 0 0 0 9 WNW 0 0 0 0 0 4 2 0 0 0 0 0 6 NW 0 0 0 0 0 3 0 0 0 0 0 0 3 NNW 0 0 0 0 1 7 0 0 0 0 0 0 8 TOTAL 0 0 1 4 48 110 16 0 0 0 0 0 179 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 179 TOTAL HOURS FOR THE PERIOD: 179 64

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 8 12 3 0 0 0 0 0 23 NNE 0 0 0 4 9 3 0 0 0 0 0 0 16 NE 0 0 0 3 4 0 0 0 0 0 0 0 7 ENE 0 0 0 2 1 0 0 0 0 0 0 0 3 E 0 0 0 3 0 0 0 0 0 0 0 0 3 ESE 0 0 0 3 1 0 0 0 0 0 0 0 4 SE 0 0 0 4 10 8 1 0 0 0 0 0 23 SSE 0 0 0 0 4 9 3 0 0 0 0 0 16 S 0 0 0 0 2 7 3 0 0 0 0 0 12 SSW 0 0 0 0 4 1 1 0 0 0 0 0 6 SW 0 0 0 1 2 2 0 0 0 0 0 0 5 WSW 0 0 0 0 9 18 0 0 0 0 0 0 27 W 0 0 0 1 14 24 0 0 0 0 0 0 39 WNW 0 0 0 0 9 13 2 0 0 0 0 0 24 NW 0 0 0 1 5 6 0 0 0 0 0 0 12 NNW 0 0 0 0 7 17 2 0 0 0 0 0 26 TOTAL 0 0 0 22 89 120 15 0 0 0 0 0 246 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 246 TOTAL HOURS FOR THE PERIOD: 246 65

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS C FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 3 4 0 0 0 0 0 0 7 NNE 0 0 0 2 2 1 0 0 0 0 0 0 5 NE 0 0 0 2 1 0 0 0 0 0 0 0 3 ENE 0 0 0 2 0 0 0 0 0 0 0 0 2 E 0 0 0 2 0 0 0 0 0 0 0 0 2 ESE 0 0 0 3 1 0 0 0 0 0 0 0 4 SE 0 0 0 0 5 3 0 0 0 0 0 0 8 SSE 0 0 1 0 5 3 0 0 0 0 0 0 9 S 0 0 0 3 4 3 0 0 0 0 0 0 10 SSW 0 0 0 0 0 2 0 0 0 0 0 0 2 SW 0 0 1 0 4 4 0 0 0 0 0 0 9 WSW 0 0 0 4 8 0 0 0 0 0 0 0 12 W 0 0 0 2 10 5 0 0 0 0 0 0 17 WNW 0 0 0 3 6 0 0 0 0 0 0 0 9 NW 0 0 0 2 2 1 0 0 0 0 0 0 5 NNW 0 0 0 1 3 4 0 0 0 0 0 0 8 TOTAL 0 0 2 26 54 30 0 0 0 0 0 0 112 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 112 TOTAL HOURS FOR THE PERIOD: 112 66

River Bend Station 2003 Regulatory Guide 1.21 4112/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 2 2 9 11 6 1 0 0 0 0 0 31 NNE 0 1 5 6 5 2 0 0 0 0 0 0 19 NE 0 2 2 6 5 2 0 0 0 0 0 0 17 ENE 0 3 8 10 1 0 0 0 0 0 0 0 22 E 0 1 2 9 1 0 0 0 0 0 0 0 13 ESE 0 1 10 14 9 0 0 0 0 0 0 0 34 SE 0 2 7 23 12 10 0 0 0 0 0 0 54 SSE 0 0 2 7 16 16 1 0 0 0 0 0 42 S 0 1 3 17 11 7 4 0 0 0 0 0 43 SSW 0 0 3 9 11 7 0 0 0 0 0 0 30 SW 0 1 3 12 12 5 0 0 0 0 0 0 33 WSW 0 0 2 12 6 4 0 0 0 0 0 0 24 W 0 0 4 9 6 0 0 0 0 0 0 0 19 WNW 0 0 6 10 8 3 0 0 0 0 0 0 27 NW 0 0 0 17 6 3 0 0 0 0 0 0 26 NNW 0 0 5 10 6 10 1 0 0 0 0 0 32 TOTAL 0 14 64 180 126 75 7 0 0 0 0 0 466 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 466 TOTAL HOURS FOR THE PERIOD: 466 67

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS E FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 1 8 6 13 6 1 0 0 0 0 0 0 35 NNE 2 5 5 24 17 6 1 0 0 0 0 0 60 NE 0 9 11 11 11 2 0 0 0 0 0 0 44 ENE 1 8 12 5 3 0 0 0 0 0 0 0 29 E 4 9 11 7 6 0 0 0 0 0 0 0 37 ESE 3 19 11 8 2 0 0 0 0 0 0 0 43 SE 4 8 22 32 22 8 0 0 0 0 0 0 96 SSE 1 7 10 28 21 3 0 0 0 0 0 0 70 S 3 7 3 19 15 4 1 0 0 0 0 0 52 SSW 0 4 12 35 17 6 1 0 0 0 0 0 75 SW 1 12 16 21 5 0 0 0 0 0 0 0 55 WSW 0 7 7 4 0 0 0 0 0 0 0 0 18 W 2 6 5 5 1 0 0 0 0 0 0 0 19 WNW 0 7 5 10 1 0 0 0 0 0 0 0 23 NW 0 0 7 5 0 0 0 0 0 0 0 0 12 NNW 6 6 2 12 4 1 0 0 0 0 0 0 31 TOTAL 28 122 145 239 131 31 3 0 0 0 0 0 699 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 699 TOTAL HOURS FOR THE PERIOD: 699 68

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 11 13 9 16 5 0 0 0 0 0 0 0 54 NNE 6 5 7 19 1 0 0 0 0 0 0 0 38 NE 5 10 5 7 0 0 0 0 0 0 0 0 27 ENE 2 7 4 1 0 0 0 0 0 0 0 0 14 E 3 6 2 0 0 0 0 0 0 0 0 0 11 ESE 3 9 4 0 0 0 0 0 0 0 0 0 16 SE 1 3 4 2 0 0 0 0 0 0 0 0 10 SSE 2 4 6 3 1 0 0 0 0 0 0 0 16 S 1 5 5 0 0 1 0 0 0 0 0 0 12 SSW 5 7 2 2 0 0 0 0 0 0 0 0 16 SW 3 8 3 2 0 0 0 0 0 0 0 0 16 WSW 3 8 2 0 0 0 0 0 0 0 0 0 13 W 3 10 4 0 0 0 0 0 0 0 0 0 17 WNW 3 9 2 0 0 0 0 0 0 0 0 0 14 NW 9 8 3 0 0 0 0 0 0 0 0 0 20 NNW 8 5 5 6 0 0 0 0 0 0 0 0 24 TOTAL 68 117 67 58 7 1 0 0 0 0 0 0 318 NUMBER OF CALMS: 9 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 327 TOTAL HOURS FOR THE PERIOD: 327 69

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS G FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 10 14 4 8 0 0 0 0 0 0 0 0 36 NNE 11 5 1 1 0 0 0 0 0 0 0 0 18 NE 7 6 1 1 1 0 0 0 0 0 0 0 16 ENE 3 2 1 0 0 0 0 0 0 0 0 0 6 E 3 1 0 0 0 0 0 0 0 0 0 0 4 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 1 0 0 0 0 0 0 0 0 0 0 0 1 SSE 0 0 0 0 0 0 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 1 1 0 0 0 0 0 0 0 0 0 2 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 1 0 0 0 0 0 0 0 0 0 0 0 1 W 2 0 1 0 0 0 0 0 0 0 0 0 3 WNW 4 4 3 0 0 0 0 0 0 0 0 0 11 NW 9 20 0 0 0 1 0 0 0 0 0 0 30 NNW 7 11 8 4 0 0 0 0 0 0 0 0 30 TOTAL 58 64 20 14 1 1 0 0 0 0 0 0 158 NUMBER OF CALMS: 2 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 160 TOTAL HOURS FOR THE PERIOD: 160 70

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 3 11 14 49 35 4 0 0 0 0 116 NNE 0 1 3 6 17 51 67 1 0 0 0 0 146 NE 0 0 3 12 25 64 86 5 0 0 0 0 195 ENE 0 0 4 16 32 62 43 7 0 1 1 1 167 E 0 0 2 30 32 29 30 1 0 0 0 0 124 ESE 0 1 3 23 28 77 133 8 0 0 0 0 273 SE 0 1 0 8 13 67 61 5 0 0 0 0 155 SSE 0 0 2 10 14 49 23 1 0 0 0 0 99 S 0 0 0 16 22 57 21 5 0 0 0 0 121 SSW 0 0 2 12 25 64 25 0 0 0 0 0 128 SW 0 1 4 5 30 55 17 0 0 0 0 0 112 WSW 0 1 2 14 34 78 16 0 0 0 0 0 145 W 0 0 2 7 21 66 33 0 0 0 0 0 129 WNW 0 1 2 8 26 39 13 1 0 0 0 0 90 NW 0 0 2 14 14 24 17 1 0 0 0 0 72 NNW 0 1 1 12 15 47 40 1 0 0 0 0 117 TOTAL 0 7 35 204 362 878 660 40 0 1 1 1 2189 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 19 NUMBER OF VALID HOURS: 2189 TOTAL HOURS FOR THE PERIOD: 2208 71

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS A FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 2 7 5 1 0 0 0 0 15 NNE 0 0 0 0 0 6 10 0 0 0 0 0 16 NE 0 0 0 1 0 14 13 1 0 0 0 0 29 ENE 0 0 0 0 0 8 12 7 0 1 0 0 28 E 0 0 0 0 0 2 4 0 0 0 0 0 6 ESE 0 0 0 0 0 4 9 2 0 0 0 0 15 SE 0 0 0 0 0 5 6 3 0 0 0 0 14 SSE 0 0 0 0 0 7 2 0 0 0 0 0 9 S 0 0 0 0 0 6 4 0 0 0 0 0 10 SSW 0 0 0 0 0 1 0 0 0 0 0 0 1 SW 0 0 0 0 1 1 0 0 0 0 0 0 2 WSW 0 0 0 0 0 5 0 0 0 0 0 0 5 W 0 0 0 0 0 3 12 0 0 0 0 0 15 WNW 0 0 0 0 0 0 2 0 0 0 0 0 2 NW 0 0 0 0 0 1 1 0 0 0 0 0 2 NNW 0 0 0 0 1 2 7 0 0 0 0 0 10 TOTAL 0 0 0 1 4 72 87 14 0 1 0 0 179 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 179 TOTAL HOURS FOR THE PERIOD: 179 72

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 1 2 10 5 3 0 0 0 0 21 NNE 0 0 0 0 4 4 3 0 0 0 0 0 11 NE 0 0 0 1 5 7 3 0 0 0 0 0 16 ENE 0 0 0 0 2 2 1 0 0 0 0 0 5 E 0 0 0 0 3 0 1 0 0 0 0 0 4 ESE 0 0 0 0 3 4 14 1 0 0 0 0 22 SE 0 0 0 0 1 7 5 1 0 0 0 0 14 SSE 0 0 0 0 0 6 5 0 0 0 0 0 11 S 0 0 0 0 1 5 1 2 0 0 0 0 9 SSW 0 0 0 0 2 1 1 0 0 0 0 0 4 SW 0 0 0 0 0 3 0 0 0 0 0 0 3 WSW 0 0 0 0 5 15 10 0 0 0 0 0 30 W 0 0 0 0 3 27 15 0 0 0 0 0 45 WNW 0 0 0 0 3 12 6 1 0 0 0 0 22 NW 0 0 0 1 1 4 3 0 0 0 0 0 9 NNW 0 0 0 0 0 10 10 0 0 0 0 0 20 TOTAL 0 0 0 3 35 117 83 8 0 0 0 0 246 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 246 TOTAL HOURS FOR THE PERIOD: 246 73

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS C FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 4 2 0 0 0 0 0 6 NNE 0 0 0 0 0 1 1 0 0 0 0 0 2 NE 0 0 0 0 3 2 1 0 0 0 0 0 6 ENE 0 0 0 0 0 2 2 0 0 0 0 0 4 E 0 0 0 1 3 0 0 0 0 0 0 0 4 ESE 0 0 0 2 2 0 3 0 0 0 0 0 7 SE 0 0 0 0 0 6 3 0 0 0 0 0 9 SSE 0 0 1 0 3 3 0 0 0 0 0 0 7 S 0 0 0 1 1 4 0 0 0 0 0 0 6 SSW 0 0 0 0 0 1 1 0 0 0 0 0 2 SW 0 0 0 0 2 3 2 0 0 0 0 0 7 WSW 0 0 1 0 4 7 0 0 0 0 0 0 12 W 0 0 0 0 4 16 2 0 0 0 0 0 22 WNW 0 0 0 0 3 4 0 0 0 0 0 0 7 NW 0 0 0 1 0 2 2 0 0 0 0 0 5 NNW 0 0 0 1 1 4 0 0 0 0 0 0 6 TOTAL 0 0 2 6 26 59 19 0 0 0 0 0 112 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 112 TOTAL HOURS FOR THE PERIOD: 112 74

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 1 6 2 12 2 0 0 0 0 0 23 NNE 0 0 1 2 2 8 1 0 0 0 0 0 14 NE 0 0 2 5 3 8 8 1 0 0 0 0 27 ENE 0 0 0 6 5 13 8 0 0 0 1 1 34 E 0 0 1 6 5 3 11 0 0 0 0 0 26 ESE 0 0 1 9 4 13 18 2 0 0 0 0 47 SE 0 0 0 3 4 17 13 1 0 0 0 0 38 SSE 0 0 0 2 6 9 10 1 0 0 0 0 28 S 0 0 0 5 11 8 5 3 0 0 0 0 32 SSW 0 0 0 7 5 10 4 0 0 0 0 0 26 SW 0 0 2 0 8 11 8 0 0 0 0 0 29 WSW 0 1 1 5 8 16 4 0 0 0 0 0 35 W 0 0 1 3 6 11 2 0 0 0 0 0 23 WNW 0 0 1 6 13 7 1 0 0 0 0 0 28 NW 0 0 1 8 7 4 6 1 0 0 0 0 27 NNW 0 0 1 7 4 9 7 1 0 0 0 0 29 TOTAL 0 1 13 80 93 159 108 10 0 0 1 1 466 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 466 TOTAL HOURS FOR THE PERIOD: 466 75

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS E FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 2 1 4 6 8 0 0 0 0 0 21 NNE 0 0 0 4 6 12 22 1 0 0 0 0 45 NE 0 0 1 1 10 11 35 1 0 0 0 0 59 ENE 0 0 2 4 12 15 14 0 0 0 0 0 47 E 0 0 0 8 10 20 14 1 0 0 0 0 53 ESE 0 1 2 7 10 38 75 3 0 0 0 0 136 SE 0 0 0 1 6 18 29 0 0 0 0 0 54 SSE 0 0 0 3 1 14 5 0 0 0 0 0 23 S 0 0 0 3 4 23 9 0 0 0 0 0 39 SSW 0 0 0 2 8 42 19 0 0 0 0 0 71 SW 0 0 1 1 8 30 7 0 0 0 0 0 47 WSW 0 0 0 6 9 22 2 0 0 0 0 0 39 W 0 0 1 3 2 6 2 0 0 0 0 0 14 WNW 0 1 0 1 1 8 4 0 0 0 0 0 15 NW 0 0 0 1 2 6 3 0 0 0 0 0 12 NNW 0 1 0 3 5 10 5 0 0 0 0 0 24 TOTAL 0 3 9 49 98 281 253 6 0 0 0 0 699 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 699 TOTAL HOURS FOR THE PERIOD: 699 76

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 1 3 3 9 0 0 0 0 0 16 NNE 0 1 1 0 3 13 20 0 0 0 0 0 38 NE 0 0 0 3 2 18 20 2 0 0 0 0 45 ENE 0 0 2 6 8 9 5 0 0 0 0 0 30 E 0 0 1 8 8 2 0 0 0 0 0 0 19 ESE 0 0 0 2 7 13 14 0 0 0 0 0 36 SE 0 1 0 3 0 13 5 0 0 0 0 0 22 SSE 0 0 1 4 4 6 1 0 0 0 0 0 16 S 0 0 0 5 5 9 2 0 0 0 0 0 21 SSW 0 0 1 2 8 9 0 0 0 0 0 0 20 SW 0 0 1 3 8 7 0 0 0 0 0 0 19 WSW 0 0 0 3 3 12 0 0 0 0 0 0 18 W 0 0 0 0 3 1 0 0 0 0 0 0 4 WNW 0 0 0 0 3 4 0 0 0 0 0 0 7 NW 0 0 0 1 3 2 0 0 0 0 0 0 6 NNW 0 0 0 1 2 4 3 0 0 0 0 0 10 TOTAL 0 2 7 42 70 125 79 2 0 0 0 0 327 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 327 TOTAL HOURS FOR THE PERIOD: 327 77

River Bend Station 2003 Regulatory Guide 1.21 4112/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS G FROM 7/ 1/03 0:00 TO 9/30/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 2 1 7 4 0 0 0 0 0 14 NNE 0 0 1 0 2 7 10 0 0 0 0 0 20 NE 0 0 0 1 2 4 6 0 0 0 0 0 13 ENE 0 0 0 0 5 13 1 0 0 0 0 0 19 E 0 0 0 7 3 2 0 0 0 0 0 0 12 ESE 0 0 0 3 2 5 0 0 0 0 0 0 10 SE 0 0 0 1 2 1 0 0 0 0 0 0 4 SSE 0 0 0 1 0 4 0 0 0 0 0 0 5 S 0 0 0 2 0 2 0 0 0 0 0 0 4 SSW 0 0 1 1 2 0 0 0 0 0 0 0 4 SW 0 1 0 1 3 0 0 0 0 0 0 0 5 WSW 0 0 0 0 5 1 0 0 0 0 0 0 6 W 0 0 0 1 3 2 0 0 0 0 0 0 6 WNW 0 0 1 1 3 4 0 0 0 0 0 0 9 NW 0 0 1 2 1 5 2 0 0 0 0 0 11 NNW 0 0 0 0 2 8 8 0 0 0 0 0 18 TOTAL 0 1 4 23 36 65 31 0 0 0 0 0 160 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 160 TOTAL HOURS FOR THE PERIOD: 160 78

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 11 22 9 36 55 47 13 0 0 0 0 0 193 NNE 21 22 11 44 46 37 11 0 0 0 0 0 192 NE 25 32 5 29 48 21 1 0 0 0 0 0 161 ENE 23 34 28 23 24 10 1 0 0 0 0 0 143 E 2 17 14 32 16 1 0 0 0 0 0 0 82 ESE 3 20 31 32 32 6 0 0 0 0 0 0 124 SE 5 3 22 93 85 73 7 0 0 0 0 0 288 SSE 2 5 10 28 31 49 68 3 0 0 0 0 196 S 0 2 6 13 19 35 42 0 0 0 0 0 117 SSW 0 3 5 10 11 18 9 0 0 0 0 0 56 SW 0 1 3 6 5 3 1 0 0 0 0 0 19 WSW 0 7 10 8 3 17 0 0 0 0 0 0 45 W 2 19 8 9 10 22 1 0 0 0 0 0 71 WNW 3 31 21 18 3 17 15 0 0 0 0 0 108 NW 6 48 38 18 14 36 44 0 0 0 0 0 204 NNW 7 21 20 20 26 52 51 8 0 0 0 0 205 TOTAL 110 287 241 419 428 444 264 11 0 0 0 0 2204 NUMBER OF CALMS: 4 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 2208 TOTAL HOURS FOR THE PERIOD: 2208 79

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS A FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 2 6 3 0 0 0 0 0 11 NNE 0 0 0 0 4 13 8 0 0 0 0 0 25 NE 0 0 0 0 8 7 1 0 0 0 0 0 16 ENE 0 0 0 1 8 7 0 0 0 0 0 0 16 E 0 0 0 1 7 1 0 0 0 0 0 0 9 ESE 0 0 0 3 12 2 0 0 0 0 0 0 17 SE 0 0 1 1 14 22 2 0 0 0 0 0 40 SSE 0 0 0 0 2 12 13 0 0 0 0 0 27 S 0 0 0 0 1 5 8 0 0 0 0 0 14 SSW 0 0 0 0 0 3 0 0 0 0 0 0 3 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 3 0 0 0 0 0 0 3 W 0 0 0 0 0 2 0 0 0 0 0 0 2 WNW 0 0 0 0 0 2 2 0 0 0 0 0 4 NW 0 0 0 0 0 2 4 0 0 0 0 0 6 NNW 0 0 0 0 1 2 9 3 0 0 0 0 15 TOTAL 0 0 1 6 59 89 50 3 0 0 0 0 208 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 208 TOTAL HOURS FOR THE PERIOD: 208 80

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 3 5 3 0 0 0 0 0 11 NNE 0 0 0 1 4 4 0 0 0 0 0 0 9 NE 0 0 0 3 4 0 0 0 0 0 0 0 7 ENE 0 0 0 0 2 1 0 0 0 0 0 0 3 E 0 0 0 2 3 0 0 0 0 0 0 0 5 ESE 0 0 0 1 3 0 0 0 0 0 0 0 4 SE 0 0 0 1 4 10 0 0 0 0 0 0 15 SSE 0 0 0 2 8 2 13 1 0 0 0 0 26 S 0 0 0 0 1 9 8 0 0 0 0 0 18 SSW 0 0 0 0 1 8 1 0 0 0 0 0 10 SW 0 0 0 0 3 2 0 0 0 0 0 0 5 WSW 0 0 0 0 1 11 0 0 0 0 0 0 12 W 0 0 0 1 4 9 0 0 0 0 0 0 14 WNW 0 0 0 0 2 5 2 0 0 0 0 0 9 NW 0 0 0 0 0 8 8 0 0 0 0 0 16 NNW 0 0 0 0 1 10 9 1 0 0 0 0 21 TOTAL 0 0 0 11 44 84 44 2 0 0 0 0 185 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 185 TOTAL HOURS FOR THE PERIOD: 185 81

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS C FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 5 2 0 0 0 0 0 0 7 NNE 0 0 0 1 1 0 1 0 0 0 0 0 3 NE 0 0 0 1 1 0 0 0 0 0 0 0 2 ENE 0 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 1 0 0 0 0 0 0 0 0 1 ESE 0 0 0 2 0 0 0 0 0 0 0 0 2 SE 0 0 1 1 5 1 0 0 0 0 0 0 8 SSE 0 0 0 0 0 4 6 0 0 0 0 0 10 S 0 0 2 0 1 3 4 0 0 0 0 0 10 SSW 0 0 0 0 2 1 2 0 0 0 0 0 5 SW 0 0 0 0 2 0 0 0 0 0 0 0 2 WSW 0 0 0 1 1 2 0 0 0 0 0 0 4 W 0 0 0 0 3 4 0 0 0 0 0 0 7 WNW 0 0 0 1 0 2 2 0 0 0 0 0 5 NW 0 0 0 0 1 2 4 0 0 0 0 0 7 NNW 0 0 0 0 3 4 6 0 0 0 0 0 13 TOTAL 0 0 3 8 25 25 25 0 0 0 0 0 86 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 86 TOTAL HOURS FOR THE PERIOD: 86 82

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 2 5 28 25 6 0 0 0 0 0 66 NNE 0 1 0 3 16 7 1 0 0 0 0 0 28 NE 0 0 1 6 13 5 0 0 0 0 0 0 25 ENE 0 1 2 9 7 2 0 0 0 0 0 0 21 E 0 3 2 13 2 0 0 0 0 0 0 0 20 ESE 0 0 1 7 7 0 0 0 0 0 0 0 15 SE 0 0 0 14 19 15 3 0 0 0 0 0 51 SSE 0 0 0 5 5 13 28 2 0 0 0 0 53 S 0 0 0 1 4 13 17 0 0 0 0 0 35 SSW 0 0 0 6 4 4 2 0 0 0 0 0 16 SW 0 0 0 5 0 1 1 0 0 0 0 0 7 WSW 0 0 1 5 0 1 0 0 0 0 0 0 7 W 0 0 1 5 3 5 0 0 0 0 0 0 14 WNW 0 0 1 6 0 3 4 0 0 0 0 0 14 NW 0 0 2 3 7 19 27 0 0 0 0 0 58 NNW 0 0 0 7 5 24 27 4 0 0 0 0 67 TOTAL______0__5___13___100____120___137____11_____6___0__0__0___0__497__

TOTAL 0 5 13 100 120 137 116 6 0 0 0 0 497 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 497 TOTAL HOURS FOR THE PERIOD: 497 83

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS E FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 2 2 13 17 9 1 0 0 0 0 0 44 NNE 0 0 5 24 20 13 1 0 0 0 0 0 63 NE 0 0 0 9 22 9 0 0 0 0 0 0 40 ENE 0 1 7 10 6 0 1 0 0 0 0 0 25 E 0 2 7 10 4 0 0 0 0 0 0 0 23 ESE 0 5 14 12 9 4 0 0 0 0 0 0 44 SE 1 1 6 54 38 25 2 0 0 0 0 0 127 SSE 0 0 2 14 15 18 8 0 0 0 0 0 57 S 0 0 1 10 11 5 5 0 0 0 0 0 32 SSW 0 0 2 2 4 2 4 0 0 0 0 0 14 SW 0 0 1 0 0 0 0 0 0 0 0 0 1 WSW 0 1 0 1 1 0 0 0 0 0 0 0 3 W 0 1 1 2 0 2 1 0 0 0 0 0 7 WNW 0 3 1 5 1 5 5 0 0 0 0 0 20 NW 0 1 3 6 5 5 1 0 0 0 0 0 21 NNW 0 0 3 6 15 12 0 0 0 0 0 0 36 TOTAL______1__17___55___178____1___8__109____29___0___0__0__0___0__557__

TOTAL 1 17 55 178 168 109 29 0 0 0 0 0 557 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 557 TOTAL HOURS FOR THE PERIOD: 557 84

River Bend Station 2003 Regulatory Guide 1.21 4/l12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 2 2 11 0 0 0 0 0 0 0 0 15 NNE 1 3 5 14 1 0 0 0 0 0 0 0 24 NE 2 2 2 9 0 0 0 0 0 0 0 0 15 ENE 0 2 5 2 1 0 0 0 0 0 0 0 10 E 0 6 2 4 0 0 0 0 0 0 0 0 12 ESE 0 10 13 2 1 0 0 0 0 0 0 0 26 SE 1 1 10 22 5 0 0 0 0 0 0 0 39 SSE 1 3 7 5 1 0 0 0 0 0 0 0 17 S 0 1 2 2 1 0 0 0 0 0 0 0 6 SSW 0 1 3 2 0 0 0 0 0 0 0 0 6 SW 0 0 2 1 0 0 0 0 0 0 0 0 3 WSW 0 1 4 1 0 0 0 0 0 0 0 0 6 W 1 3 3 1 0 0 0 0 0 0 0 0 8 WNW 1 3 9 4 0 0 0 0 0 0 0 0 17 NW 0 1 7 7 1 0 0 0 0 0 0 0 16 NNW 0 1 3 6 0 0 0 0 0 0 0 0 10 TOTAL 7 40 79 93 11 0 0 0 0 0 0 0 230 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 230 TOTAL HOURS FOR THE PERIOD: 230 85

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS G FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 11 18 3 7 0 0 0 0 0 0 0 0 39 NNE 20 18 1 1 0 0 0 0 0 0 0 0 40 NE 23 30 2 1 0 0 0 0 0 0 0 0 56 ENE 23 30 14 1 0 0 0 0 0 0 0 0 68 E 2 6 3 1 0 0 0 0 0 0 0 0 12 ESE 3 5 3 5 0 0 0 0 0 0 0 0 16 SE 3 1 4 0 0 0 0 0 0 0 0 0 8 SSE 1 2 1 2 0 0 0 0 0 0 0 0 6 S 0 1 1 0 0 0 0 0 0 0 0 0 2 SSW 0 2 0 0 0 0 0 0 0 0 0 0 2 SW 0 1 0 0 0 0 0 0 0 0 0 0 1 WSW 0 5 5 0 0 0 0 0 0 0 0 0 10 W 1 15 3 0 0 0 0 0 0 0 0 0 19 WNW 2 25 10 2 0 0 0 0 0 0 0 0 39 NW 6 46 26 2 0 0 0 0 0 0 0 0 80 NNW 7 20 14 1 1 0 0 0 0 0 0 0 43 TOTAL 102 225 90 23 1 0 0 0 0 0 0 0 441 NUMBER OF CALMS: 4 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 445 TOTAL HOURS FOR THE PERIOD: 445 86

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 6 11 57 63 3 0 0 0 0 140 NNE 0 0 0 4 13 40 75 10 0 0 0 0 142 NE 0 1 1 5 11 37 121 11 0 0 0 0 187 ENE 0 1 4 5 15 57 67 11 1 0 0 0 161 E 0 1 2 3 16 53 36 6 2 0 0 0 119 ESE 0 0 2 4 10 55 166 16 0 0 0 0 253 SE 0 0 2 4 9 37 148 15 0 0 0 0 215 SSE 0 0 1 4 9 53 77 46 3 0 0 0 193 S 0 0 2 5 8 39 53 12 0 0 0 0 119 SSW 0 1 0 2 6 24 23 5 0 0 0 0 61 SW 0 0 2 4 8 23 6 1 0 0 0 0 44 WSW 0 0 0 5 6 32 15 0 0 0 0 0 58 W 0 0 0 2 12 36 37 5 1 0 0 0 93 WNW 0 0 2 2 9 35 50 24 0 0 0 0 122 NW 0 1 2 2 10 26 74 27 2 0 0 0 144 NNW 0 1 1 2 8 33 74 30 8 0 0 0 157 TOTAL 0 6 21 59 161 637 1085 222 17 0 0 0 2208 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 2208 TOTAL HOURS FOR THE PERIOD: 2208 87

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS A FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 1 5 1 0 0 0 0 7 NNE 0 0 0 0 0 3 9 4 0 0 0 0 16 NE 0 0 0 0 0 10 12 3 0 0 0 0 25 ENE 0 0 0 0 2 10 10 4 0 0 0 0 26 E 0 0 0 0 1 8 4 0 0 0 0 0 13 ESE 0 0 0 1 1 14 21 1 0 0 0 0 38 SE 0 0 0 0 0 9 12 2 0 0 0 0 23 SSE 0 0 0 0 1 2 3 10 0 0 0 0 16 S 0 0 0 0 0 2 10 0 0 0 0 0 12 SSW 0 0 0 0 0 0 2 0 0 0 0 0 2 SW 0 0 0 0 0 1 0 0 0 0 0 0 1 WSW 0 0 0 0 0 0 2 0 0 0 0 0 2 W 0 0 0 0 0 0 2 0 0 0 0 0 2 WNW 0 0 0 0 0 0 5 3 0 0 0 0 8 NW 0 0 0 0 0 0 4 2 0 0 0 0 6 NNW 0 0 0 0 0 1 1 6 3 0 0 0 11 TOTAL 0 0 0 1 5 61 102 36 3 0 0 0 208 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 208 TOTAL HOURS FOR THE PERIOD: 208 88

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 1 1 5 4 0 0 0 0 0 11 NNE 0 0 0 0 0 2 3 0 0 0 0 0 5 NE 0 0 0 0 0 3 5 1 0 0 0 0 9 ENE 0 0 0 0 1 4 0 1 0 0 0 0 6 E 0 0 0 0 3 1 0 0 0 0 0 0 4 ESE 0 0 0 0 3 7 9 1 0 0 0 0 20 SE 0 0 0 0 4 1 6 1 0 0 0 0 12 SSE 0 0 0 0 1 3 4 11 0 0 0 0 19 S 0 0 0 0 1 6 11 1 0 0 0 0 19 SSW 0 0 0 0 0 2 2 0 0 0 0 0 4 SW 0 0 0 0 2 3 2 0 0 0 0 0 7 WSW 0 0 0 0 0 10 2 0 0 0 0 0 12 W 0 0 0 1 2 5 6 0 0 0 0 0 14 WNW 0 0 0 0 0 6 6 4 0 0 0 0 16 NW 0 0 0 0 1 2 2 6 0 0 0 0 11 NNW 0 0 0 0 0 5 4 6 1 0 0 0 16 TOTAL 0 0 0 2 19 65 66 32 1 0 0 0 185 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 185 TOTAL HOURS FOR THE PERIOD: 185 89

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS C FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 2 3 0 0 0 0 0 0 5 NNE 0 0 0 0 1 3 1 1 0 0 0 0 6 NE 0 0 0 0 0 0 1 0 0 0 0 0 1 ENE 0 0 0 0 1 0 0 0 0 0 0 0 1 E 0 0 0 0 1 1 1 0 0 0 0 0 3 ESE 0 0 1 1 0 2 2 0 0 0 0 0 6 SE 0 0 1 0 1 2 4 1 0 0 0 0 9 SSE 0 0 0 0 0 1 5 2 0 0 0 0 8 S 0 0 1 0 1 4 1 0 0 0 0 0 7 SSW 0 0 0 0 1 1 2 0 0 0 0 0 4 SW 0 0 0 0 0 1 0 0 0 0 0 0 1 WSW 0 0 0 0 0 4 0 0 0 0 0 0 4 W 0 0 0 0 0 5 2 1 0 0 0 0 8 WNW 0 0 0 0 1 3 3 3 0 0 0 0 10 NW 0 0 0 0 1 0 1 3 0 0 0 0 5 NNW 0 0 0 0 2 2 1 3 0 0 0 0 8 TOTAL 0 0 3 1 12 32 24 14 0 0 0 0 86 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 86 TOTAL HOURS FOR THE PERIOD: 86 90

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 3 1 28 20 2 0 0 0 0 54 NNE 0 0 0 1 1 16 9 1 0 0 0 0 28 NE 0 0 1 2 8 3 20 2 0 0 0 0 36 ENE 0 1 2 0 0 7 19 1 0 0 0 0 30 E 0 0 1 3 4 5 10 0 0 0 0 0 23 ESE 0 0 0 1 2 5 23 7 0 0 0 0 38 SE 0 0 0 0 1 8 15 4 0 0 0 0 28 SSE 0 0 0 0 1 7 17 19 3 0 0 0 47 S 0 0 0 0 2 9 13 8 0 0 0 0 32 SSW 0 0 0 1 1 2 4 1 0 0 0 0 9 SW 0 0 0 3 1 2 1 1 0 0 0 0 8 WSW 0 0 0 1 2 3 0 0 0 0 0 0 6 W 0 0 0 0 4 8 8 2 0 0 0 0 22 WNW 0 0 1 1 4 0 14 8 0 0 0 0 28 NW 0 1 0 1 3 6 24 16 2 0 0 0 53 NNW 0 0 0 0 1 8 28 14 4 0 0 0 55 TOTAL 0 2 5 17 36 117 225 86 9 0 0 0 497 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 497 TOTAL HOURS FOR THE PERIOD: 497 91

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS E FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 1 9 25 0 0 0 0 0 35 NNE 0 0 0 1 2 7 36 4 0 0 0 0 50 NE 0 0 0 0 0 8 47 2 0 0 0 0 57 ENE 0 0 0 1 5 15 22 5 1 0 0 0 49 E 0 0 0 0 3 12 13 5 2 0 0 0 35 ESE 0 0 0 0 3 14 65 4 0 0 0 0 86 SE 0 0 1 1 0 4 61 7 0 0 0 0 74 SSE 0 0 0 0 2 9 40 4 0 0 0 0 55 S 0 0 1 0 1 1 11 3 0 0 0 0 17 SSW 0 0 0 0 1 6 5 4 0 0 0 0 16 SW 0 0 0 0 0 1 0 0 0 0 0 0 1 WSW 0 0 0 0 2 3 1 0 0 0 0 0 6 W 0 0 0 0 2 2 5 2 1 0 0 0 12 WNW 0 0 0 0 0 3 8 6 0 0 0 0 17 NW 0 0 1 0 0 2 11 0 0 0 0 0 14 NNW 0 1 1 0 0 6 24 1 0 0 0 0 33 TOTAL 0 1 4 3 22 102 374 47 4 0 0 0 557 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 557 TOTAL HOURS FOR THE PERIOD: 557 92

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N_____0____0____0____0____2____5____4_____0____0____0____0____0____1____

N 0 0 0 0 2 5 4 0 0 0 0 0 11 NNE 0 0 0 0 2 3 10 0 0 0 0 0 15 NE 0 0 0 1 1 5 15 3 0 0 0 0 25 ENE 0 0 0 4 3 4 9 0 0 0 0 0 20 E 0 0 0 0 1 2 4 1 0 0 0 0 8 ESE 0 0 0 1 1 4 31 0 0 0 0 0 37 SE 0 0 0 1 0 3 36 0 0 0 0 0 40 SSE 0 0 0 1 1 8 2 0 0 0 0 0 12 S 0 0 0 2 0 1 5 0 0 0 0 0 8 SSW 0 0 0 0 0 6 4 0 0 0 0 0 10 SW 0 0 0 0 0 2 0 0 0 0 0 0 2 WSW 0 0 0 0 0 4 2 0 0 0 0 0 6 W 0 0 0 0 1 4 2 0 0 0 0 0 7 WNW 0 0 0 0 0 4 5 0 0 0 0 0 9 NW 0 0 0 0 1 2 11 0 0 0 0 0 14 NNW 0 0 0 0 0 1 5 0 0 0 0 0 6 TOTAL 0 0 0 10 13 58 145 4 0 0 0 0 230 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 230 TOTAL HOURS FOR THE PERIOD: 230 93

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS G FROM 10/ 1/03 0:00 TO 12/31/03 23:00 PRIMARY SENSORS - 150 FOOT WIND SPEED (METERS/SECOND)

WIND .22- .51- .76- 1.1- 1.6- 2.1- 3.1- 5.1- 7.1- 10.1- 13.1- >18 TOT.

DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N_____0____0____0____2____4_________5_____0____0____0____0____0____17___

N 0 0 0 2 4 6 5 0 0 0 0 0 17 NNE 0 0 0 2 7 6 7 0 0 0 0 0 22 NE 0 1 0 2 2 8 21 0 0 0 0 0 34 ENE 0 0 2 0 3 17 7 0 0 0 0 0 29 E 0 1 1 0 3 24 4 0 0 0 0 0 33 ESE 0 0 1 0 0 9 15 3 0 0 0 0 28 SE 0 0 0 2 3 10 14 0 0 0 0 0 29 SSE 0 0 1 3 3 23 6 0 0 0 0 0 36 S 0 0 0 3 3 16 2 0 0 0 0 0 24 SSW 0 1 0 1 3 7 4 0 0 0 0 0 16 SW 0 0 2 1 5 13 3 0 0 0 0 0 24 WSW 0 0 0 4 2 8 8 0 0 0 0 0 22 W 0 0 0 1 3 12 12 0 0 0 0 0 28 WNW 0 0 1 1 4 19 9 0 0 0 0 0 34 NW 0 0 1 1 4 14 21 0 0 0 0 0 41 NNW 0 0 0 2 5 10 11 0 0 0 0 0 28 TOTAL 0 3 9 25 54 202 149 3 0 0 0 0 445 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 445 TOTAL HOURS FOR THE PERIOD: 445 94

River Bend Station 2003 Regulatory Guide 1.21 4/12/2004 Table 12 Effluent and Waste Disposal Annual Report 2003 Year ATMOSPHERIC DISPERSION AND DEPOSITION RATES FOR THE MAXIMUM INDIVIDUAL DOSE CALCULATIONS Analysis Location Ground Level Mixed Mode (meters) Releases Releases Gamma air dose (3) and 994 mWNW (Containment) CHI/Q - 421.0 CHI/Q - 33.1 Beta Air Dose Maximum Receptor 994 m WNW CHI/Q - 421.0 CHI/Q - 33.1 Resident D/Q - 50.3 D/Q - 18.1 Garden Meat animal Immersion Milk animal 7,000 m WNW CHI/Q - 3.58 CHI/Q - .870 D/Q - 0.38 D/Q - .223 Other on-site Receptors 115 m ENE CHI/Q - 5977.0 CHI/Q - 407.5 (6) D/Q - 529.7 D/Q - 46.9 275 mrN CHI/Q - 1644.0 CHI/Q - 169.1 D/Q - 345.6 D/Q - 68.4 2500 SW CHI/Q - 34.45 CHI/Q - 4.65

. D/Q - 3.35 D/Q - 1.40 Notes:

(1) All CHI/Q = 10-7 sec/m3 (2) All D/Q = 10-9 mn2 (3) Maximum offsite location (property boundary) with highest CHI/Q (unoccupied).

(4) Maximum hypothetical occupied offsite location with highest CHI/Q and D/Q.

(5) No milk animal within 5 miles radius, hypothetical location in worst sector.

(6) Other on-site receptors.

95

River Bend Station 2003 Regulatory Guide 1.21 April 19,2003 ATTACHMENT 1 Process Control Program (PCP)

I

NUCLEAR QUALITY RELATED RW-105 Revision 1 egMANAGEMENT

Enltery MANUALI INFORMATION USE Page I of 6

Title:

Process Control Proaram Reviews Required Cross Discipline Review .No Code Reviews:

10CFR50.59 Review .Yes 10CFR50.54 Review .No Environmental Qualification .No On-Site Safety Review Committee Reviews* No Procedure Owner: John L. Etheridge / Sr Project Manager (Print Name I Title)

Approved: > $ /

(Procedure Owners Signature) (Date)

Effective Dates: I j tv/A ' R fi//xA/S NIA

' ANO GGNS RBS W3 Echelon New Procedure/Revision/Cancellation Basis:

RW-105, "Process Control Program" is modified to

Change the classification to Quality vs. Non-Quality

Addition of vendor requirement for placement on QSL when performing services under 10CFR61 & 10CFR71 requirements a Updated Section 8.0

NUCLEAR QUALITY RELATED RW.105 Revision I Entergy MANAGEMENT I INFORMATiON USE Page 2 of 6

_1 TABLE OF CONTENTS Section Title Page 1.0 PURPOSE ............. 3

2.0 REFERENCES

............... 3 3.0 DEFINITIONS ............. 4 4.0 RESPONSIBILITY ............. 4 5.0 DETAILS ............... 4 6.0 INTERFACES .......... , .6 7.0 RECORDS ......... 6 8.0 REQUIREMENTS AND COMMITMENT CROSS REFERENCE...............................................................................6 9.0 ATTACHMENTS ................ .... 6

a NUCLEAR QUALITY RELATED RW-105 Revision I MANAGEMENT

- ZEn te MANUAL INFORMATION USE Page 3 of 6 1~~ 1 - I - -

1.0 PURPOSE The Process Control Program establishes the necessary guidance to ensure that solid radioactive waste management activities result in solid waste products meeting the criteria contained in the Code of Federal Regulations, State Regulations and Radioactive Waste Burial Site License Criteria for solid radioactive waste shipping and disposal. The scope of the Process Control Program is to assure that radioactive waste will be handled, shipped, and disposed of in a safe manner in accordance with approved site or vendor procedures, whichever is applicable.

2.0 REFERENCES

2.1 Entergy Nuclear - Southwest

Entergy Quality Assurance Program Manual

Title 49, Code of Federal Regulations

Title 10, Code of Federal Regulations

Branch Technical Position on Final Waste Classification and Waste Form

Disposal Site Criteria and License

Waste Processor Acceptance Criteria 2.2 River Bend Specific References

RBS Technical Requirements Manual Section 5.8

RWS-0336, Set-up and Operation of the RDS-1000 Dewatering Unit

RWS-031 0, Operation of the Nuclear Packaging Model WC-1 800 Waste Compactor 2.3 Arkansas Nuclear One Specific References

1601.5XX series procedures 2.4 Waterford Specific References

FSAR Chapter 11.4, Solid Waste Management System

FSAR Chapter 13.4, Review and Audit

FSAR Chapter 13.2, Training

FSAR Chapter 13.5, Plant Procedures

a NUCLEAR QUALITY RELATED RW-105 Revision I Enteey MANAGEMENT MANUAL INFORMATION USE Page 4 of 6 I I -_

3.0 DEFINITIONS 3.1 De-watering - The removal of water or liquid from a waste form, usually by gravity or pumping.

3.2 Compaction - The process of volume reducing solid waste by applying external pressure.

3.3 Incineration - The process of burning a combustible material to reduce its volume and yield an ash residue.

3.4 Solid Dry Waste - Radioactive waste which exist primarily in a non-liquid phase and includes such items as dry materials, metals, resins, filter media and sludges.

3.5 Solid Liquid Waste - Radioactive waste that exist primarily in a liquid form and is contained in other than installed plant systems, to include such items as oil, EHC fluid, and other concentrated liquids.

3.6 Solidification - Conversion of liquid or liquid like materials, including wet solids, into a solid free standing form.

3.7 Stability - Structural stability per 10CFR61.2. This can be provided by the waste form, or by placing the waste in a disposal container or structure that provides stability after disposal.

3.8 Volume Reduction - any process that reduces the volume of waste. This includes but is not limited to, compaction and incineration.

4.0 RESPONSIBILITY 4.1 The Vice President Operations Support (VPOS) is responsible for the implementation of this procedure and must approve any changes or revisions to this procedure.

4,2 Each site Senior Nuclear Executive (SNE) is responsible for ensuring that necessary site staff implements this procedure.

4.3 The Low Level RadWaste (LLRW) Peer Group is responsible for evaluating and recommending changes and revisions to this procedure.

5.0 DETAILS 5.1 Solid Dry Waste Management NOTE If the provisions of the Process Control Program are not satisfied, suspend shipment of the defectively processed or defectively packaged solid waste from the site. Shipment may be accomplished when the waste is processed/packaged in accordance with the Process Control Program.

5.1.1 Solid waste may be packaged and processed either on-site or at an offsite waste processing facility.

5.1.2 Solid waste will meet applicable regulatory requirements, vendor waste acceptance criteria and disposal site acceptance criteria.

5.1.3 Solid waste processing may include, but is not limited to compaction, incineration, bulk processing, dewatering, or any other acceptance technologies available.

_ NUCLEAR QUALITY RELATED RW-105 Revision 1 EnergyMANAGEMENT IOEnterTy II MAUAS L INFORMATION USE Page 5 of 6 5.1.4 River Bend Specific Requirement - Radioactive waste processed at RBS will either be, dewatered in accordance with RWS-0336, Set-up and Operation of the RDS-1000 Dewatedng Unit, or compacted in accordance with RWS-0310, Operation of the Nuclear Packing Model WC-1800 Waste Compactor.

5.2 Liquid Waste Management NOTE The solidification of liquid wastes will be verified with surveillance activities of an approved Process Control Program.

5.2.1 Solid Liquid waste may be packaged and processed either on-site or at an offsite waste processing facility.

5.2.2 Solid Liquid waste will meet applicable regulatory requirements, vendor waste acceptance criteria and disposal site acceptance criteria.

5.2.3 Solid Liquid waste processing may include, but is not limited to incineration, solidification, or any other acceptance technologies available.

5.3 Quality Assurance 5.3.1 Reviews of solid waste activities performed under the guidance of the Process Control Program are completed through audits and selected monitoring activities.

5.3.2 Certain elements of the Entergy Quality Assurance Program Manual are applied to the Process Control Program.

5.4 Administrative Controls 5.4.1 Information on solid radioactive waste shipped offsite is reported annually to the Nuclear Regulatory Commission.

5.4.2 All changes in the Process Control Program and supporting documentation are included in each site's next annual Radiological Effluent Release Report to the Nuclear Regulatory Commission as required.

5.4.3 All changes that do not affect procedure content are reviewed through the site's Safety Review Committees and up to the site's Vice Presidents.

5.4.4 Each site will maintain applicable state and federal regulations, vendor waste acceptance criteria and disposal site waste acceptance criteria.

5.4.5 Vendors performing radwaste services under IOCFR61 and IOCFR71 requirements will be on the Entergy QSL.

NUCLEAR QuALITr RELATED RW-105 Revision 1 EntersMANAGEMENT Entergy MANUAL INFORMATION USE Page 6 of 6 6.0 INTERFACES 6.1 None 7.0 RECORDS 7.1 None 8.0 REQUIREMENTS AND COMMITMENT CROSS REFERENCE Document Document Procedure Site Applicability Section Section RBS Technical Requirements 5.5.14 RBS RBS Technical Requirements 5.5.14.1 5.4 RBS RBS Technical Requirements 5.5.14.2 5.4.3 RBS RBS Technical Requirements 5.8.2 5.4.3 RBS WF3 Technical Specifications 1.22

WF3 WF3 Technical Specifications 6.9.18 5.4.1 WF3 WF3 Technical Specifications 6.13.2.b 5.4.3 WF3

Covered by directive as a whole or by various paragraphs of the directive.

9.0 ATTACHMENTS 9.1 None

River Bend Station 2003 Regulatory Guide 1.21 April 19, 2003 ATTACHMENT 2 Offsite Dose Calculation Manual (ODCM)

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