Text

Radioactive Effluent Release Report for 2008
	ML091250323
Person / Time
Site:	River Bend
Issue date:	04/30/2009
From:	Lorfing D; Entergy Operations
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	G9.25.1.5, G9.5, RBF1-09-0064, RBG-46911
	Download: ML091250323 (109)
	v • d • e

Entergy Operations, Inc.

River Bend Station 5485 U.S. Highway 61 N St. Francisville, LA 70775 SEntergy Tel 225 381 4157 David N. Lorfing Manager-Licensing April 30, 2009 U.S. Nuclear Regulatory Commission Document Control Desk 11555 Rockville Pike Rockville, MD 20852-2738

Subject:

Radioactive Effluent Release Report for 2008

\ River Bend Station - Unit 1 License No. NPF-47 Docket No. 50-458 File Nos.: G9.5, G9.25.1.5 RBG-46911 RBF1-09-0064

Dear Sir or Madam,

Enclosed is the River Bend Station (RBS) Annual Radioactive Effluent Release Report for the period January 1, 2008; through December 31, 2008. This report is submitted in accordance with the RBS Technical Specifications, Section 5.6.3.

Should you have any questions regarding the enclosed information, please contact Mr. David Lorfing at (225) 381-4157. n Sincerely, David N. Lorfing DNL/wjf enclosure

Radioactive Effluent Release Report for 2008 Page 2 of 2 cc: U.S. Nuclear Regulatory Commission (w/o Enclosure)

Region IV 612 East Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Resident Inspector (w/o Enclosure)

PO Box 1050 St. Francisville, LA 70775 Mr. Alan B. Wang, Project Manager U.S. Nuclear Regulatory Commission MS OWFN 8 G14 11555 Rockville Pike Rockville, MD 20852-2738

2008 ANNUAL EFFLUENT RELEASE REPORT PREPARED BY:

Victor A. Huffstatler / Senior Environmental Specialist REVIEWED BY: - (--- / '1 Robert W. Heath / Superintendent - Chemistry REVIEWED BY: ad t 44 fRia Bradford L. Houston / Radiation Protection Manager APPROVED BY: A-" *2---- 00, Eric W. Olson / General Manager Plant Operations

River Benid Station 2008 Regulatory Guide 1.21 4/28/2009 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 9 F. Estimate of Total Error 11 III. GASEOUS EFFLUENT

SUMMARY

INFORMATION 11 IV. LIQUID EFFLUENT

SUMMARY

INFORMATION 12 V. SOLID WASTE 12 VI. RADIOLOGICAL IMPACT ON MAN 12 VII. METEOROLOGICAL DATA 13 VIII. RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION OPERABILITY 13 IX. RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION OPERABILITY 13 X. LIQUID HOLDUP TANKS 13 XI. 'RADIOLOGICAL ENVIRONMENTAL MONITORING 13 XII. LAND USE CENSUS 14 XIII. OFFSITE DOSE CALCULATION MANUAL (ODCM) 14 XIV. MAJOR CHANGES TO RADIOACTIVE LIQUID, GASEOUS AND SOLID WASTE TREATMENT SYSTEMS 14 XV. PROCESS CONTROL PROGRAM (PCP) 15 XVI. INDUSTRY GROUND WATER PROTECTION INITIATIVE (GPI) - FINAL GUIDANCE DOCUMENT OBJECTIVE ANNUAL REPORTING 15 2

River Bend Station 2(108 Regulatory Guide 1.21 4/28/2009 TABLES Table 1A Gaseous Effluent - Summation of All Releases 16 Table 1B Gaseous Effluent - Ground Level Releases 17 Table 1C Gaseous Effluent - Ground Level Batch Release 18 Table 1D Gaseous Effluent - Mixed Mode Continuous Releases 19 Table 1E Gaseous Effluent - Mixed Mode Batch Releases 20 Table 1F Radioactive Gaseous Waste Sampling and Analysis Program 21 Table 1G Gaseous Dose Summary 22 Table 2A Liquid Effluent - Summation of All Releases 23 Table 2B Liquid Effluent - Continuous Mode 24 Table 2C Liquid Effluent - Batch Mode 25 Table 2D Liquid Batch Information 26 Table 2E Radioactive Liquid Waste Sampling and Analysis Program 27 Table 2F Liquid Dose Summary 28 Table 3 Solid Waste and Irradiated Fuel Shipments 29 Table 4 Assumptions/Parameters for Doses to Member of the Public Inside Site Boundary 31 Table 5 Doses to Members of the Public on Site from Gaseous Releases 32 Table 6 Meteorological Data - Joint Frequency Tables 33 Table 7 Atmospheric Dispersion Factors 66 Table 8 Groundwater Initiative Sample Results 67 ATTACHMENTS Attachment 1 EN-RW-105 Process Control Program Procedure 75 3

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 I. INTRODUCTION This is the annual Radioactive Effluent Release Report for the period of January 1, 2008, through December 31, 2008. This report is submitted in accordance with Technical Specification 5.6.3 of Appendix A to River Bend Station (RBS) License Number NPF-47.

II. SUPPLEMENTAL INFORMATION A. Regulatory Limits

1. 10CFR50, Appendix I Limits

a. Fission and Activation Gases In accordance with Technical Requirement (TR) 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: 9 DGamma-Air = gamma air dose from radioactive noble gases in millirad (mrad) n 3.17E-8 Y_ Mi (X/Q) Qi < 5 mrads/qtr i=1 < 10 mrads/yr DBeta-Air = beta air dose from radioactive noble gases in millirad (mrad) n

= 3.17E-8 Y Ni (X/Q) Qi < 10 mrads/qtr i=1 < 20 mrads/yr

b. Radioiodines (1-131 & 1-133) and Particulate In accordance with Technical Requirement 3.11.2.3, the dose to a MEMBER OF THE PUBLIC from radioiodines (1-131 and 1-133), tritium (H-3) 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:

DI&8DpT = Dose in mrem to the organ (t) 'for the age group of interest from radioiodine (1-131, 1-133, tritium, and 8 day particulate via the pathway of interest.)

n

= 3.17E-08 (Fu) Y PiT (X/Q) Qi and 1=1 4

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 n

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

D, Y- DI&8DPT < 7.5 mrem/qtr z=1 < 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:

Diý = Ai, At Qi (DF) Dw and n

DTOTAL'= Y- Di, i= 1 DTOTALT= 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

< 10 mrem/yr (above terms defined in RBS ODCM)

2. 40CFR190 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 200)8 Regulatory Guide 1.21 4/28/2009

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 mremlyr n

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

.n Y, Li + 1.1Mi (X/Q) Qi <3000 mrem/yr i=1 (above terms defined in RBS ODCM)

b. Technical Requirement 3.11.2.1 - Radioiodine (1-131 & 1-133) and Particulate In accordance with Technical Requirement 3.11.2.1, the dose rate due to radioiodines, 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 r for the age pathway group of interest from Radioiodines (1-131 & 1-133), tritium, and 8 day particulate via the inhalation pathway in mrem/yr.

n _

Y- 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 AREAS shall be limited to ten times the concentrations specified in 6

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 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 concentration.

d. Technical Requirement 3.11.2.5 - Ventilation Exhaust Treatment 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

1. 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

1. 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 using high purity germanium detectors coupled to computerized pulse height analyzers. The sampling and analysis frequencies are described in Table iF.

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River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 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 used 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, Iodine-131 and Iodine-133 are continuously sampled from the three release points using 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 1F. Analysis is performed to identify and quantify radionuclides using high purity germanium detectors coupled to computerized pulse height analyzers. Given the nuclide specific activity concentrations, process flow rate, and duration of the sample, 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. Strontium-89 and Strontium-90'(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 gaseous release points at the specified frequencies listed in Table 1F using an ice bath condensation collection method. The collected sample is then analyzed using 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.

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River Bend Station 2008 Regulatory Guide 1.21 4/28/2009

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 2E. Analysis for gamma emitting nuclides (including dissolved and entrained noble gases) is performed using a high resolution germanium detector coupled to a computerized pulse height analyzer. Tritium concentration is determined using a liquid scintillation counter. Strontium-89 and 'Strontium-90 are quantitatively analyzed by scintillation techniques (Chrenkov counting).

Iron-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 Liquid Effluents Batch releases and receiving stream flow from River Bend Station during the reporting period of January 1, 2008, through December 31, 2008 are shown in Table 2D.

The Mississippi River stream flow is obtained by averaging data from the U. S. Army Corp of Engineers website using flow gauge data at Tarbert Landing.

Gaseous Effluents' There were no routine batch releases of gaseous effluents from River Bend Station during the reporting period of January 1, 2008, through December 31, 2008. There was one abnormal gaseous release that was treated as a batch for reporting purposes and the values are reported in Table 1C.

E. Abnormal Releases Number of abnormal liquid releases: 2 Total Curies Released: The total curies released are included in Table 2C Number of abnormal gaseous releases: 1 Total Curies Released: The total curies released are included in Table IC 9

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Abnormal Release Details Description of event: Leak from Hydrogen Water Chemistry Flame Arrestor Impact of event: No known effluent impact.

Remediation of event: None Radioactive contamination content and levels of event: Too small to quantify or indeterminate.

Impact on groundwater, if any: No known impact. None detected from sampling.

Description of event: CWS Blowdown Line break during LWS discharge.

Impact of event: At this time there are no impacts to the effluents program that would cause a change in current methodology. This is not expected to be a continuing pathway for dose considerations. If any positive groundwater samples are ever detected, then additional reviews will be performed and decisions made concerning ODCM changes or any remediation activities.

Remediation of event: The hole near the blowdown line break with standing water was pumped into barrels. The remainder of the water is considered to have made its way to the Mississippi River via Outfall 003 and Grants Bayou.

Radioactive contamination content and levels of event: Only tritium was detected in the water which leaked from the blowdown line. The maximum level detected in Outfall 003 was 28,043 pCiIL. At this time there is no drinking water pathway between the site and the Mississippi River. Isotope quantities are included in the totals of Table 2C. Tritium is no longer detected in Outfall 003.

Impact on groundwater, if any: Groundwater sampling was performed. Additional wells were also used to assist in characterizing any potential groundwater flow from this event. All results for gamma and H-3 were less than MDA. Sampling is performed at least quarterly as part of the site's groundwater initiative.

Description of event: Loss of Turbine Building siding as a result of Hurricane Gustav.

Impact of event: No known impact.

Remediation of event: None. This was a gaseous effluent release.

Radioactive contamination content and levels of event: Isotope quantities are reported in Table 1C. The hourly meteorological data as available is included in Joint Frequency information attached to this report.

Impact on groundwater, if any: No known impact.

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River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 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 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 = V((E4z + (E 2 )- +"'(En)Z) where:

ET = total error E1 , 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 I series for "Summation of All Releases and "Nuclides Released,"

respectively. It should be noted that an entry of "0.OOE+00" 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 IF. Also, any nuclide not appearing in the tables was < LLD for all four quarters.

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River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 IV. LIQUID EFFLUENT

SUMMARY

INFORMATION Refer to the Table 2 series for "Summation of All Releases and Nuclides Released." It should be noted that an entry of "O.OOE+00" 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 2E. Also, any nuclide not appearing in the tables was < LLD for all four quarters.

V. SOLID WASTE Refer to Table 3, for "Solid Waste and Irradiated Fuel Shipments.

VI. RADIOLOGICAL IMPACT ON MAN (40CFR190)

An assessment (see summary below) 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.

Organ mirem Total Body 1.22E-01 Skin 1.50E-01 Thyroid 3.15E-01 Other Organ 1.23E-01 In addition, an assessment of doses was made for members of the public due to their activities inside the site boundary. Parameters and assumptions used to make this determination can be found in Table 4. The results of the calculations can be found in Table 5. The maximally exposed member of the public was the lawn service provider.

The lawn service provider dose is conservatively calculated to have performed all work at the Generation Support Building during 2008. The employees staying at RBS during the week are conservatively calculated to have stayed at least four days per week for 50 weeks. 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.

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River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 VII. METEOROLOGICAL DATA See Tables 6 and 7 for the cumulative joint frequency distributions and annual average data for continuous releases. The meteorological recovery for 2008 was 94.8 %.

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 January 1, 2008, through December 31, 2008, restored to operable status within the required time, except as noted in the following paragraph.

Only one entry into Action E2 occurred. This is documented in LCO 2008-1089 for Flow Rate Measurement Device CWS-FE113 Cooling Tower Blowdown Line. The comments secton of LCO 2008-1089 states "Per TR 3.3.11.2, environmental has been contacted to perform action E.2. This condition exists because of plant outage and no circulating water system is service to validate flow, element readings. Channel check will be performed once Circulating water blowdown is started." LCO 2008-1089 was entered on 01/20/2008 at 1944 and exited on 02/25/2008 at 1300.

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 January 1, 2008, through December 31, 2008, 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 January 1, 2008, through December 31, 2008 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 to the Radiological Environmental Monitoring Program during the reporting period January 1, 2008, through December 31, 2008.

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River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 XII. LAND USE CENSUS The Land Use Census for 2008 was conducted in accordance with procedure ESP-8-051, as required by Technical Requirements Manual (TRM) (TR 3.12.2).

A garden census is not conducted pursuant to the note in the TRM (TRCO 3.12.2) that allows the sampling of broadleaf vegetation in the highest calculated average ground-level D/Q sector near site boundary in lieu of the garden census.

The milk animal census identified no milk animals within 8 km (5 miles) of River Bend site.

This information was verified by the County Agents from West Feliciana, East Feliciana and Pointe Coupee parishes.

No locations were identified in 2008 that would yield a calculated dose or dose commitment greater than those currently calculated in Requirement TSR 3.11.2.3.1.

The County Agents also confirmed that there was no commercial harvesting of crawfish within the five-mile radius downstream of RBS. This is data is collected to further support the possibility of removing invertebrates from the liquid dose conversion factors. This information represents three consecutive land use census periods that show crawfish consumption from the waters immediately affected by RBS does not occur. RBS conservatively uses the invertebrate pathway although not required by NUREG-0133 liquid dose factor methodology for fresh water nuclear power plants.

XIII. OFFSITE DOSE CALCULATION MANUAL (ODCM)

There were no changes to the ODCM in 2008.

XIV. MAJOR CHANGES TO RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS Engineering performed a review of the eB and IAS database to evaluate non-administrative design changes completed or partially completed during 2008 involving the subject systems (i.e. changes classified as evaluations or nuclear changes). These design changes were then reviewed to determine if there have been any major changes to the subject systems. The review was based on a major change being defined as a modification which affected the method of processing or the effluent from the system. Also, to. be a "major change" the change must have affected the USAR.

The Engineering Change (EC) completed during this time period is EC 5000070720 which was a conversion of ER-RB-2003-0476-000. This EC involves bypassing the liquid radwaste backwash tank, LWS-TK7, pump interlocks with LWS-AOV315 to allow clearing the pump discharge line in the e'vent the line becomes plugged with solids. This change did not modify any radioactive waste system major component such that the processing method or effluent was changed. These changes also had no affect on the method of processing solid, liquid or gaseous waste and did not affect the isotopic composition or the quantity of liquid, solid, or 14 (7

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 gaseous waste as described in the USAR.

In conclusion, no design changes were completed during the specified time period that constituted a major change to either liquid, solid or gaseous radwaste treatment systems.

XV. PROCESS CONTROL PROGRAM (PCP)

Changes to the PCP in 2008 are summarized as follows:

The revision to EN-RW-105 "Process Control Program" included a major re-write to provide updates to allow VTY, PLP and IPEC to be included as sites implementing this Process Control Program.

The following are updates:

" Waste management practices section replaced dry and liquid waste management

, Waste stream sampling methods and frequency section added

Waste classification section added

Quality Control section added

" Dewatering section added

" Waste packaging section added Miscellaneous section added for special tools/equipment & training requirements.

The procedure EN-RW-105 - Process Control Program and the Process Applicability Determination for River Bend Station have been included in this report as Attachment 1.

XVI. INDUSTRY GROUND WATER PROTECTION INITIATIVE (GPI) - FINAL GUIDANCE DOCUMENT (NEI 07-07) OBJECTIVE ANNUAL REPORTING Ground water samples for gamma radiation and tritium were taken in support of the GPI.

These samples are not part of the REMP program. There were two leaks in 2008. These leaks are detailed above in the abnormal release section. In addition to these two leaks, one other incident occurred' on 11/5/2008 while sampling a maintenance pit containing the radioactive waste discharge line. Upon analyzing the samples it was discovered that mud and water in the pit contained Co-60 and tritium. The Co-60 concentration was 194 pCi/kg.

The water contained only tritium in a concentration of 2095 pCi/L. This material was placed in drums and transported to Radwaste for disposition. No leakage outside the pit has been identified. As a result of the above incidents additional wells were sampled in 2008 and first quarter 2009 in support of the GPI.

The Minimum Detectable Activity (MDA) in all samples taken in support of the GPI are less than the Lower Limit of Detection as required in Technical Requirement 3.12.1 (Environmental LLDs). The sample results are located in Table 8.

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River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 1A GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES REPORT FOR 2008 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Gases

1. Total Release Ci 1. 09E+02 3. OOE+01 5. 26E+01 1.26E+01 2. 04E+02

2. Avg. Release Rate uCi/sec 1.38E+01 3.81E+00 6. 62E+00 1.59E+00 6.45E+00

3. % Applicable Limit % (1) 8.78E-01 2. 46E-01 4.14E-01 1. 15E-01 1 . 65E+00 Iodine-131

1. Total Release Ci 2.48E-03 7. 4 1E-04 9. 53E-04 9. 53E-04 5.13E-03

2. Avg. Release Rate uCi/sec 3.15E-04 9.42E-05 1.20E-04 1.20E-04 1.62E-04

3. % Applicable Limit % (2) 1 .11E+00 3.21E-01 4.14E-01 4. 06E-01 1. 13E+00 Particulates Half Life >= 8 days

1. Total Release Ci 1. 1OE-04 5.18E-04 5. 48E-04 5.86E-04 1.76E-03

2. Avg. Release Rate uCi/sec 1.40E-05 6.59E-05 6.89E-05 7.38E-05 5. 57E-05

3. % Applicable Limit % (2) 9. 19E-02 7.48E-02 9.04E-02 1.01E-01 1.81E-01 Tritium

1. Total Release Ci 4.04E+00 5. OOE+00 5.18E+00 3. 71E+00 1.79E+01

2. Avg. Release Rate uCi/sec 5. 14E-01 6.36E-01 6.52E-01 4.66E-01 5. 67E-01

3. % Applicable Limit % (2) 2. 08E-01 1. 17E-01 1.28E-01 1.08E-01 2. 79E-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 2008 Regulatory Guide 1.21 4/28/2009 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 1B GASEOUS EFFLUENTS - GROUND RELEASES - CONTINUOUS MODE REPORT FOR 2008 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and ActivatiOn Gases XE-133 Ci 8. 52E-01 9 .23E-02 8. 11E-02 7.21E-02 1. 10E+00 XE-133M Ci 0. 00E+00 0. OOE+00 0.OOE+00 0 . OOE+00 0. OOE+00 XE-135 Ci 3. 04E+00 8.86E-01 8.25E-01 6.24E-01 5. 38E+00 XE-135M Ci 3. 25E-01 5.02E-01 4. 41E-01 3.92E-01 1.66E+00 Totals for Period... Ci 4.22E+00 1.48E+00 1.35E+00 1.09E+00 8. 13E+00 Iodines 1-131 Ci 5. 94E-05 6 . 08E-06 3 . 52E-06 0.OOE+00 6.91E-05 1-133 Ci 4.75E-04 0. OOE+00 3.43E-06 0.OOE+00 4.78E-04 Totals for Period... Ci 5.34E-04 6. 08E-06 6.95E-06 0. OOE+00 5. 47E-04 Particulates Half Life >= 8 dayE CE-141 Ci 0 . OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 CO-57 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 0.OOE+00 0 OOE+00 0.OOE+00 CO-60 Ci 1. 12E-06 0.OOE+00 1.31E-05 1 .76E-06 1.60E-05 CR-51 Ci 0 . OOE+00 0. OOE+00 0. OOE+00 0 OOE+00 0. OOE+00 CS-137 Ci 0 . OOE+00 0. OOE+00 0. OOE+00 0 OOE+00 0.OOE+00 FE-59 Ci 0 . OOE+00 0. OOE+00 0. OOE+00 0. OOE+0.0 0. OOE+00 MN-54 Ci 0 . 00E+00 0. OOE+00 4 . 65E-06 0 OOE+00 4. 65E-06 NB-95 Ci 0. OOE+00 0. OOE+00 0.OOE+00 0 OOE+00 0. OOE+00 RU-103 Ci 1. 70E-05 0 OOE+00 0. OOE+00 0 . OOE+00 1. 70E-05 RU-106 Ci 5.77E-06 0. OOE+00 0. OOE+00 0 OOE+00 5.77E-06 ZN-65 Ci 0. OOE+00 0. OOE+00 0. OOE+00 0 OOE+00 0.OOE+00 Totals for Period... Ci 2.39E-05 0. 00E+00 1.78E-05 1. 76E-06 4.35E-05 Tritium H-3 Ci 3. 03E+00 1.47E+00 1. 63E+00 1. 43E+00 7.56E+00 Totals for Period... Ci 3. 03E+00 1.47E+00 1.63E+00 1.43E+00 7.56E+00 Gross Alpha Radioactivity

- No Nuclide Activities **

17

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 EFFLUENT AND WASTE DISPOSAL REPORT TABLE iC GASEOUS EFFLUENTS - GROUND RELEASES - BATCH MODE REPORT FOR 2008 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Gases XE-133 Ci 0 .OE+00 0.OOE+00 0.OOE+00 0. OOE+00 0. OOE+00 XE-135 Ci 0 .OOE+00 0.OOE+00 4.75E-03 0. OOE+00 4.75E-03 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 4. 75E-03 0.00E+00 4.75E-03 Iodines 0. OOE+00 1-131 Ci 0. OOE+00 0. OOE+00 3. 45E-06 0 .OOE+00 3.45E-06 1-133 Ci 0.OOE+00 0. OOE+00 6. 61E-06 6. 61E-06

0. OOE+00 Totals for Period... Ci 0.OOE+00 0. OOE+00 1.01E-05 1.01E-05 Particulates Half Life >= 8 days 0. OOE+00 BA-140 Ci 0.OOE+00 0. OOE+00 3. 03E-07 3. 03E-07 0.OOE+00 0.OOE+00 CO-60 Ci o.OOE+00 0. OOE+00 0 . OOE+00 0. 06E+00 MN-54 Ci 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 0. OOE+00 SR-89 Ci 0. OOE+00 0. OOE+00 1.08E-07 0.OOE+00 1.08E-07 SR-90 Ci, 0.OOE+00 0. OOE+00 1. 15E-09 1. 15E-09

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 0.OOE+00 0. OOE+0.0 4.12E-07 4.12E-07 O.OOE+O0 Tritium H-3 Ci 0.OOE+00 0.OOE+00 2 . 98E-03 0 . OOE+00 2.98E-03 Totals for Period... Ci 0.OOE+00 0.OOE+00 2 . 98E-03 0 . OOE+00 2.98E-03 18

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 EFFLUENT AND WASTE DISPOSAL REPORT TABLE ID GASEOUS EFFLUENTS - MIXED MODE RELEASES - CONTINUOUS MODE REPORT FOR 2008 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Gases AR-41 Ci 0. OOE+00 0.00E+00 0 OOE+00 0. OOE+00 0.OOE+00 KR-85 Ci 0. OOE+00 0. 00E+00 0.00E+00 0. 00E+00 0.OOE+00 KR-85M Ci 4.34E-01 0. OOE+00 2. 97E-01 0 .00E+00 7.31E-01 KR-87 Ci 1 . 66E+00 0. OOE+00 3. 82E-01 0 .00E+00 2 . 04E+00 KR-88 Ci. 1. 16E+00 0 . 00E+00 6. 40E-01 0 .OOE+00 1. 80E+00 XE-131M Ci 0. OOE+00 0 . 00E+00 0.00E+00 0. 00E+00 0. 00E+00 XE-133 Ci 7. 77E+00 9.29E-01 1. 46E+00 2 . 74E-02 1.02E+01 XE-133M Ci 0. OOE+00 8.43E-01 0 . OOE+00 0.OOE+00 8.43E-01 XE-135 Ci 4.27E+01 1. 14E+01 1. 77E+01 1. 12E+01 8.30E+01 XE-135M Ci 3. 45E+01 1.53E+01 2. 56E+01 2.79E-01 7. 57E+01 XE-137 Ci 6. 88E+00 0. 60E+00 3. 02E+00 0.OOE+00 9.91E+00 XE-138 Ci 9. 39E+00 0. 00E+00 2. 18E+00 0.00E+00 1. 16E+01 Totals for Period... Ci 1.05E+02 2.85E+01 5. 13E+01 1. 15E+01 1.96E+02 Iodines 1-131 Ci 2.42E-03 7.35E-04 9. 46E-04 9. 53E-04 5. 05E-03 1-132 Ci 0. OOE+00 0 . OOE+00 0 . 00E+00 0. 00E+00 0. 00E+00 1-133 Ci 4.18E-03 6. 30E-03 7.17E-03 8. 72E-03 2 . 64E-02 1-135 Ci 0. OOE+00 0 . 00E+00 0.OOE+00 0. 00E+00 0. 00E+00 Totals for Period... Ci 6. 60E-03 7. 03E-03 8.12E-03 9. 68E-03 3.14E-02 Particulates Half Life >= 8 day.

BA-140 Ci 2.15E-05 1.98E-04 2.46E-04 3.43E-04 8. 08E-04 CE-139 Ci 0. OOE+00 0 . 00E+00 0 . 00E+00 0.00E+00 0. 00E+00 CE-141 Ci 0. OOE+00 0. 00E+00 0 . 00E+00 0. 00E+00 0. 00E+00 CO-58 Ci 1.66E-06 0. OOE+00 0 . 00E+00 0. OOE+00 1.66E-06 CO-60 Ci 1. 58E-05 1.11E-05 0 . 00E+00 0. OOE+00 2. 70E-05 CR-51 Ci 0.OOE+00 0. 00E+00 0. 00E+00 0. OOE+00 0.00E+00 CS-134 Ci 0.OOE+00 0. 00E+00 0. 00E+00 0.00E+00 0 OOE+00 CS-137 Ci 0.OOE+00 0. 00E+00 0. 00E+00 0.00E+00 0. OOE+00 FE-59 Ci 0. OOE+00 0. 00E+00 0. OOE+00 0 . 00E+00 0 OOE+00 MN-54 Ci 0. OOE+00 0. 00E+00 0. 00E+00 0 . 00E+00 0 OOE+00 RU-103 Ci 3.39E-06 0. 00E+00 0. 00E+00 0 . 00E+00 3. 39E-06 SR-89 Ci 4.39E-05 3. 09E-04 2. 82E-04 2.42E-04 8. 77E-04 SR-90 Ci 0 . OOE+00 0. 00E+00 1.72E-06 0 . 00E+00 1. 71E-06 ZN-65 Ci 0 . OOE+00 0.00E+00 0. 00E+00 0 . 00E+00 0. OOE+00 Totals for Period... Ci 8. 63E-05 5.18E-04 5.30E-04 5.85E-04 1.72E-03 Tritium H-3 Ci 1.01E+00 3.53E+00 3.54E+00 2. 28E+00 1. 04E+01 Totals for Period... Ci 1.01E+00 3.53E+00 3.54E+00 2. 28E+00 1. 04E+01 Gross Alpha Radioactivity

- No Nuclide Activities **

19

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 EFFLUENT AND WASTE DISPOSAL REPORT SUPPLEMENTAL INFORMATION GASEOUS EFFLUENTS - BATCH MODE TABLE 1E REPORT FOR 2008 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Number of releases 0 0 1 0 1 Total release time minutes 0.OOE+00 0. 00E+00 2.84E+04 0. OOE+00 2 .84E+04 Maximum release time minutes 0.OOE+00 0. OOE+00 2 .84E+04 0 . OOE+00 2.84E+04 Average release time minutes 0.OOE+00 0. OOE+00 2 .84E+04 0. OOE+00 2.84E+04 Minimum release time minutes 0.OOE+00 0. OOE+00 2 .84E+04 0. OOE+00 2. 84E+04 20

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 TABLE IF Effluent and Waste Disposal Annual Report 2008 Year RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM Gaseous Release Type Sampling Minimum Analysis Type of Activity Lower Limit of Frequency Frequency Analysis Detection (LLD) uCi/ml A. Main Plant M, M Principal Gamma Exhaust Duct Grab Sample Emitters 1.OOE-04 H-3 1.00E-06 B. Fuel Building M M Principal Gamma Ventilation Grab Sample Emitters 1.OOE-04 Exhaust Duct H-3 1.00E-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 Sample in A, B, & C above 1-133 1.OOE-l0 Continuous W Principal Gamma Particulate Sample Emitters (1-131, 1.OOE-11 Others)

Continuous M Gross Alpha Composite 1.00E-11 Particulate Sample Continuous Q Sr-89, Sr-90 Composite 1.OOE-11 Particulate Sample Continuous Noble Gas Monitor Noble Gases Gross Beta or Gamma 1.OOE-06 W = At least once per 7 days M = At least once per 31 days Q = At least once per 92 days 21

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table IG GASEOUS DOSE

SUMMARY

Release ID: 1 All Gas Release Points Coefficient Type: Historical I&P DOSE LIMIT ANALYSIS Age Dose Limit Max % of Period-Limit Group Organ (mrem) (mrem) Limit Ql - T.Spec Any Organ CHILD THYROID 1.06E-01 7.50E+00 1.41E+00 Q2 - T.Spec Any Organ CHILD THYROID 3.84E-02 7.50E+00 5.13E-01 Q3 - T.Spec Any Organ CHILD THYROID 4.74E-02 7.50E+00 6.32E-01 Q4 - T.Spec Any Organ CHILD THYROID 4.61E-02 7.50E+00 6.14E-01 Yr - T.Spec Any Organ CHILD THYROID 2.38E-01 1.50E+01 1.59E+00 NOBLE GAS DOSE LIMIT ANALYSIS Dose Limit % of Period-Limit (mrad) (mrad) Limit Ql - T.Spec Gamma 4.39E-02 5.OOE+00 8.77E-01 Q2 - T.Spec Gamma 1.23E-02 5.OOE+00 2.46E-01 Q3 - T.Spec Gamma 2.07E-02 5.OOE+00 4.14E-01 Q4 - T.Spec Gamma 5.75E-03 5.OOE+00 1.15E-01 Yr - T.Spec Gamma 8.26E-02 1.OOE+01 8.26E-01 Ql - T.Spec Beta 4.21E-02 1.OOE+01 4.21E-01 Q2 - T.Spec Beta 7.89E-03 1.OOE+01 7.89E-02 Q3 - T.Spec Beta 1.58E-02 1.OOE+01 1.58E-01 Q4 - T.Spec Beta 5.46E-03 1.OOE+01 5.46E-02 Yr - T.Spec Beta 7.13E-02 2.OOE+01 3.56E-01 22

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 2A LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES REPORT FOR 2008 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Gases

1. Total Release Ci 1.61E-03 4.18E-03 2 .65E-03 2.48E-04 8. 70E-03

2. Avg. Diluted Conc. uCi/ml 2.38E-09 2.90E-09 1. 87E-09 1.73E-10 1.75E-09

3. % Applicable Limit % (1) 1.56E-03 1.48E-02 1.09E-02 1.02E-04 2. 25E-02 Tritium

1. Total Release Ci 1.43E+01 2. 57E+01 3.28E+01 4 . 36E+00 7. 72E+01

2. Avg. Diluted Conc. uCi/ml 2. 11E-05 1.78E-05 2.32E-05 3. 04E-06 1.55E-05

3. % Applicable Limit % (1) 3.30E-04 6. 07E-04 1.28E-03 2.18E-05 1 . 73E-03 Dissolved and Entrained Gases

1. Total Release Ci 5.77E-04 2 . 69E-02 3.61E-02 5. 74E-03 6.93E-02

2. Avg. Diluted Conc. uCi/ml 8.51E-10 1.87E-08 2 . 55E-08 4 . OOE-09 1.39E-08

3. % Applicable Limit % (2) 4.26E-04 9. 34E-03 1. 28E-02 2.01E-03 6. 99E-03 Gross Alpha Radioactivity

1. Total Release Ci 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 Volume of liquid waste liters 1. 11E+06 2 .37E+06 3. 87E+06 4. 87E+05 7. 84E+06 Volume of dil. water liters 6.78E+08 1. 44E+09 1.41E+09 1.43E+09 4.96E+09 (1) The most limiting dose compared to the total body and critical organ limits of TRM 3.11.I.2.a.

(2) Technical Requirement 3.11.1.1 limit of 2AO0E-04 uCi/ml for dissolved and entrained noble gases in liquid effluent.

23

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 2B LIQUID EFFLUENTS - CONTINUOUS MODE REPORT FOR 2008 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Gases

- No Nuclide Activities **

Tritium

- No Nuclide Activities **

Dissolved and Entrained Gases

- No Nuclide Activities **

Gross Alpha Radioactivity

- No Nuclide Activities **

24

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 EFFLUENT AND WASTE DISPOSAL REPORT TABLE 2C LIQUID EFFLUENTS - BATCH MODE REPORT FOR 2008 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Fission and Activation Gases CO-58 Ci 0. OOE+00 1.84E-05 0 OOE+00 0. OOE+00 1.84E-05 CO-60 Ci 5. 28E-04 3.27E-03 2. 32E-03 2 . 25E-04 6.35E-03 FE-55 Ci 1.01E-03 0.OOE+00 0 OOE+00 0.OOE+00 1.01E-03 LA-140 Ci 0. OOE+00 6.01E-05 0 OOE+00 0.OOE+00 6.01E-05 MN-54 Ci 7. 64E-05 7.50E-04 3. 26E-04 2.32E-05 1. 18E-03 MO-99 Ci 0. 00E+00 5.74E-06 0 OOE+00 0.OOE+00 5 .74E-06 TC-99M Ci 0. OOE+00, 6.13E-06 0 OOE+00 0 . OOE+00 6. 13E-06 Y-92 Ci 0. OOE+00 7.22E-05 0 OOE+00 0. OOE+00 7.22E-05 Totals for Period... Ci 1.61E-03 4.18E-03 2.65E-03 2 . 48E-04 8. 70E-03 Tritium H-3 Ci 1.43E+01 2. 57E+01 3. 28E+01 4 . 36E+00 7. 72E+01 Totals for Period... Ci 1.43E+01 2. 57E+01 3. 28E+01 4 . 36E+00 7. 72E+01 Dissolved and Entrained Gases XE-133 Ci 3. 40E-04 1.11E-02 1.38E-02 1.98E-03 2. 72E-02 XE-133M Ci 0. OOE+00 9.25E-05 3.16E-04 0. OOE+00 4 . 09E-04 XE-135 Ci 2. 38E-04 1. 58E-02 2. 20E-02 3. 76E-03 4.17E-02 Totals for Period... Ci 5. 77E-04 2 . 69E-02 3.61E-02 5. 74E-03 6.93E-02 Gross Alpha. Radioactivity

- No Nuclide Activities **

25

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 EFFLUENT AND WASTE DISPOSAL REPORT SUPPLEMENTAL INFORMATION LIQUID EFFLUENTS - BATCH MODE TABLE 2D REPORT FOR 2008 Units QTR 1 QTR 2 QTR 3 QTR 4 YEAR Number of releases 21 44 71 9 145 Total release time minutes 6.86E+03 1.49E+04 2.42E*+04 3.13E+03 4 . 90E+04 Maximum release time minutes 3.82E+02 3.89E+02 3.80E*+02 3. 73E+02 3. 89E+02 Average release time minutes 3.26E+02 3.38E+02 3.41E-+02 3. 48E+02 3. 38E+02 Minimum release time minutes 2.20E+01 3.11E+02 3.07E*+02 3. 19E+02 2.20E+01 OTR 1 OTR 2 OTR 3 OTR4 3 1,089,198 526,424 297,565 Average Mississippi ft /sec 660,044 River stream flow during periods of release of effluent into a flowing stream 26

River Bend Station 2008 Regulatory Guide 1.21 4/28/20109 TABLE 2E Effluent and Waste Disposal Annual Report 2008 Year RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM Liquid Release Type Sampling Minimum Analysis Type of Activity Lower Limit of Frequency Frequency Analysis Detection (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 iP M Dissolved and One Batch/M Entrained Gases 1.OOE-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 27

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 2F LIQUID DOSE

SUMMARY

Report for: 2008 Release ID: 10 All Liquid Release Points Liquid Receptor

=== SITE DOSE LIMIT ANALYSIS Age Dose Limit Max % of Period - Limit Group Organ (mrem) (mrem) Limit Qtr 1 - T.Spec Any Organ ADULT GILLI 8.31E-05 5. OOE+00 1. 66E-03 Qtr 2 - T.Spec Any Organ ADULT GILLI 7.48E-04 5. OOE+00 1.50E-02 Qtr 3 - T.Spec Any Organ ADULT GILLI 5.63E-04 5 .OOE+00 1. 13E-02 Qtr 4 - T.Spec Any Organ ADULT GILLI 5. 43E-06 5 .OOE+00 1.09E-04 2008 - T.Spec Any Organ ADULT GILLI 1. 15E-03 1.OOE+01 1. 15E-02 Qtr 1 - T.Spec Total Body ADULT TBODY 1. l1E-05 1 . 50E+00 7.43E-04 Qtr 2 - T.Spec Total Body ADULT TBODY 5 ; 69E-05 1.50E+00 3. 79E-03 Qtr 3 - T.Spec Total Body ADULT TBODY 5 . 57E-05 1.50E+00 3. 71E-03 Qtr 4 - T.Spec Total Body ADULT TBODY 6.76E-07 1 . 50E+00 4. 50E-05 2008 - T.Spec Total Body ADULT TBODY 1 . OOE-04 3. OOE+00 3.35E-03 28

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 TABLE 3 Effluent and Waste Disposal Annual Report 2008 Year Solid Waste and Irradiated Fuel Shipments Reporting Period from 01/01/08 to 12/31/08 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 7. 50E+01 A See Below Sludges, Evaporator Ci 2.27E+02 A Bottoms, Etc. m3 2. 69E+00 B Ci 6. 01E+01 B m3 2. 69E+00 C Ci 4 . OOE+02 C Dry Compressible Wastes, m3 1.07E+03 A See Below Contaminated Equipment Ci 3.68E+01 A Etc.

Irradiated Components, m3 0.OOE+00 C See Below Control Rods, Etc. Ci 0.OOE+00 C Other m3 7.87E+01 A See Below (Water, EHC, Waste Oil, Ci 4.84E+01 A etc.)

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),

non-compactible/compactible dry active waste and irradiated hardware.

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.

29

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Effluent and Waste Disposal Annual Report 2008 Year Solid Waste and Irradiated Fuel Shipments Reporting Period from 01/01/08 to 12/31/08 Table 3 (continued)

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, Evaporator Dry Compressible Wastes, Other Bottoms, Etc. Contaminated Equipment, Etc. Water, EHC, Waste Oil, Etc.

(Min 1%) (Min 1%) (Min 1%)

Isotope % Abundance Curies Isotope % Abundance Curies Isotope % Abundance Curies Mn-54 1.723 1. 19E+01 Mn-54 3.293 1.21E+00 H-3 11.431 5.54E-02 Fe-55 76.822 5.30E+02 Fe-55 85.371 3.14E+01 Mn-54 2.682 1.30E-02 Co-60 13.110 9.04E+01 Co-60 10.290 3.79E+00 Fe-55 71.443 3.46E-01 Zn-65 1.260 8.69E+00 Co-60 12.730 6.17E-02 C-14 1.539 '1.06E+01 Ni-63 1.337 9.22E+00 _

Determined by Measurement & Correlation.

Packaged in Strong, Tight Liners.

No Solidification Agent or Absorbent Used No Control Rods, Etc. were shipped in 2008

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 27 Truck Energy Solutions (Bear Creek)- Oak Ridge, TN 14 Truck Studsvik Processing Facility - Erwin, TN 6 Truck Studsvik Processing Facility - Memphis, TN 3 Truck Energy Solutions (Gallaher Road)-Oak Ridge, TN 1 Truck Perma-Fix of Florida - Gainesville, FL B.-, Irradiated Fuel Shipments Disposition Number of Shipments Mode of Transportation Destination N/A N/A 0

30

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 TABLE 4 Effluent and Waste Disposal Annual Report 2008 Year ASSUMPTIONS/PARAMETERS FOR DOSES TO A MEMBER OF THE PUBLIC INSIDE SITE BOUNDARY MEMBER OF LOCATION DISTANCE"l) SECTOR DURATION THE PUBLIC METERS (HR/YEAR) (2)

People Entering Site Without Alligator Bayou 2500 SW 40 Consent Lawn Service General Services 115 ENE 360 Provider Building National Guard Activity Center 994 WNW 0(3)

Delivery Driver Main Warehouse 275 N 125 Workers staying Activity Center 994 WNW 2400(4) onsite Trailer City (1) The approximate distances from main plant vent exhaust to location.

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

(3) 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. No National Guard in 2008.

(4) Workers began staying at the Activity Center Trailer City beginning April 10, 2007. Some left and some have been permitted to stay long term. During the outage (RF-14), additional workers were on site for about 60 days. The long term indivduals will be the receptors for this pathway. For 2008, this estimate is based .on 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months per day, 4 days per week for 50 weeks, totaling 2400 hours0.0278 days 0.667 hours 0.00397 weeks 9.132e-4 months . The adult age group is the only age group considered for this activity.

31

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 TABLE 5 DOSES TO MEMBERS OF THE PUBLIC ON SITE FROM GASEOUS RELEASES 2008 Critical Total Skin Dose Annual Organ Body Dose Annual Duration Dose Annual (mrem) Factor Annual (mrem)

(mrem)

Alligator 1.19E-05 7.12E-05 2.47E-04 4.57E-03 Bayou Lawn 1.85E-02 1.11E-01 3.86E-01 4.11E-02 Service Provider Workers 4.14E-03 8.19E-03 1.95E-02 2.74E-01 staying onsite Delivery 1.07E-02 1.87E-03 3.70E-02 1.43E-02 Driver ,

32

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 6 Effluent and Waste Disposal Annual Report 2008 Year Meteorological Data - Joint Frequency Tables 33

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 1/01/08 0:00 TO 3/31/08 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 14 8 10 23 39 59 23 0 0 0 0 0 176 NNE 7 13 10 24 34 35 14 0 0 0 0 0 137

\NE 8 16 18 30 26 27 2 0 0 0 0 0 127 ENE 22 28 60 52 25 29 0 0 0 0 0 0 216 E 9 27 40 42 23 13 1 0 0 0 0 0 155 ESE 4 16 27 66 44 10 2 0 0 0 0 0 169 SE 2 6 12 52 64 62 18 0 0 0 0 0 216 SSE 4 2 3 13 29 92 72 20 1 0 0 0 236 S 0 1 6 22 23 47 56 14 0 0 0 0 169 SSW 1 0 5 4 12 30 26 1 0 0 0 0 79 SW 2 1 6 9 3 10 5 0 0 0 0 0 36 WSW 1 2 4 4 8 8 4 0 0 0 0 0 31 W 2 6 3 8 6 9 5 0 0 0 0 0 39 WNW 4 5 5 7 5 16 23 2 0 0 0 0 67 NW 4 5 12 12 17 22 27 2 0 0 0 0 101 NNW 4 6 7 19 27 48 42 2 0 0 0 0 155 TOTAL 88 142 228 387 385 517 320 41 1 0 0 0 2109 NUMBER OF CALMS: 6 NUMBER OF INVALID HOURS: 69 NUMBER OF VALID HOURS: 2115 TOTAL HOURS FOR THE PERIOD: 2184 STABILITY CLASS A FROM 1/01/08 0:00 TO 3/31/08 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 1 1 0 0 0 0 0 2 NNE 0 0 0 0 1 3 2 0 0 0 0 0 6 NE 0 0 0 1 2 4 0 0 0 0 0 0 7 ENE 0 0 0 1 1 6 0 0 0 0 0 0 8 E 0 0 0 2 3 7 1 0 0 0 0 0 13

.' ESE 0 0 0 2 12 6 1 0 0 0 0 0 21 SE 0 0 0 2 5 9 6 0 0 0 0 0 22 SSE 0 0 0 0 0 6 12 3 0 0 0 0 21 S 0 0 0 0 0 1 1 0 0 0 0 0 2 SSW 0 0 0 \0 0 0 2 0 0 0 0 0 2 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 1 0 0 0 0 0 1 NW 0 0 0 0 0 0 1 0 0 0 0 0 1 NNW 0 0 0 0 0 0 2 0 0 0 0 0 2 TOTAL 0 0 0 8 24 43 30 3 0 0 0 0 108 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 108 TOTAL HOURS FOR THE PERIOD: 108 34

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 1/01/08 0:00 TO 3/31/08 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 2 0 2 - 3 0 0 0 0 0 7 NNE 0 0 0 1 1 1 0 0 0 0 0 0 3 NE 0 0 0 0 0 0 1 0 0 0 0 0 1 ENE 0 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 2 2 0 0 0 0 0 0 0 4 ESE 0 0 0 1 2 1 0 0 0 0 0 0 4 SE 0 0 0 0 1 1 3 0 0 0 0 0 5 SSE 0 0 0 0 0 2 7 3 0 0 0 0 12 S 0 0 0 0 0 1 3 1 0 0 0 0 5 SSW 0 0 0 0 0 1 0 0 0 0 0 0 1 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 0 ,0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 1 4 0 0 0 0 0 5 NNW 0 0 0 0 0 1 1 0 0 0 0 0 2 TOTAL 0 0 0 6 6 11 22 4 0 0 0 0. 49 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 49 TOTAL HOURS FOR THE PERIOD: 49' STABILITY CLASS C FROM 1/01/08 0:00 TO 3/31/08 23:00 PRIMARY SENSORS - 30 FOOT WIND SPEED (METERS/SECOND)

SWIND .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 H 0 0 0 0 0 0 4 0 0 0 0 0 4 NNE 0 0 0 0 0 2 0 0 0 0 0 0 2 NE 0 0 0 0 3 2 0 0 0 0 0 0 5 ENE 0 0 0 0 0 1 0 0 0 0 0 0 1 E 0 0 0 1 2 0 0 0 0 0 0 0 3 ESE 0 0 0 1 5 0 0 0 0 0 0 0 6 SE 0 0 0 0 1 4 0 0 0 0 0 0 5 SSE 0 0 0 0 1 6 4 0 0 0 0 0 11 S 0 0 0 0 1 3 4 1 0 0 0 0 9 SSW 0 0 0 0 0 2 0 0 0 0 0 0 2 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 1 0 0 0 0 0 0 1 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 1 0 0 0 0 0 1 NW 0 0 0 0 0 1 2 0 0 0 0 0 3 NNW 0 0 0 0 0 4 9 0 0 0 0 0 13 TOTAL 0 0 0 2 13 26 24 1 0 0 0 0 66 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 66 TOTAL HOURS FOR THE PERIOD: 66 35

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 1/01/08 0:00 TO 3/31/08 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 4 11 20 39 12 0 0 0 0 0 86 NNE 0 1 3 13 19 16 12 0 0 0 0 0 64 NE 0 1 2 11 15 12 1 0 0 0 0 0 42 ENE 0 1 3 10 9 11 0. 0 0 0 0 0 34 E 0 2 3 12 13 5 0 0 0 0 0 0 35 ESE 0 0 6 14 9 3 0 0 0 0 0 0 32 SE 0 1 1 11 18 21 5 0 0 0 0 0 57 SSE 0 0 0 4 8 29 38 10 1 0 0 0 90 S 0 0 2 5 9 27 44 8 0 0 0 0 95 SSW 0 0 0 3 7 18 20 1 0 0 0 0 49 SW 0 0 2 3 2 7 5 0 0 0 0 0 19 WSW 0 0 2 2 8 6 4 0 0 0 0 0 22 W 0 0 1 5 5 9 5 0 0 0 0 0 25 WNW 0 1 0 3 4 13 17 2 0 0 0 0 40 NW 0 1 1 4 13 15 19 2 0 0 0 0 55 NNW 0 1 1 10 17 28 .24 1 0 0 0 0 82 TOTAL 0 9 31 121 176 259 206 24 1 0 0 0 827 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 827 TOTAL HOURS FOR THE PERIOD: 827 STABILITY CLASS E FROM 1/01/08 0:00 TO 3/31/08 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 0 3 9 19 17 3 0 0 0 0 0 53 NNE 0 1 2 8 13 13 0 0 0 0 0 0 37 NE 0 2 5 10 6 9 0 0 0 0 0 0 32 ENE 1 1 4 19 8 11 0 0 0 0 0 0 44 E 1 4 14 20 3 1 0 0 0 0 0 0 43 ESE 0 4 15 39 16 0 1 0 0 0 0 0 75 SE 1 1 7 33 37 27 4 0 0 0 0 0 110 SSE 0 0 3 7 19 49 11 4 0 0 0 0 93 S 0 1 2 16 13 15 4 4 0 0 0 0 55 SSW 0 0 5 1 5 9 4 0 0 0 0 0 24 SW 0 1 2 3 1 3 0 0 0 0 0 0 10 WSW 0 0 1 2 0 1 0 0 0 0 0 0 4 W 0 3 0 3 1 0 0 0 0 0 0 0 7 WNW 1 2 1 3 1 3 4 0 0 0 0 0 15 NW 0 0 4 7 3 5 1 0 0 0 0 0 20 NNW 0 0 2 9 9 15 6 1 0 0 0 0 42 TOTAL 6 20 70 189 154 178 38 9 0 0 0 0 664 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 664 TOTAL HOURS FOR THE PERIOD:. 664 36

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 1/01/08 0:00 TO 3/31/08 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 4 1 3 1 0 0 0 0 0 0 0 0 9 NNE 0 3 4 2 0 0 0 0 0 0 0 0 9 NE 0 1 5 8 0 0 0 0 0 0 0 0 14 ENE 3 2 6 13 7 0 0 0 0 0 0 0 31 E 1 1 10 .2 0 0 0 0 0 0 0 0 14 ESE 1 6 5 9 0 0 0 0 0 0 0 0 21 SE 0 3 4 6 2 0 0 0 0 0 0 0 15 SSE 2 1 0 1 1 0 0 0 0 0 0 0 5 S 0 0 0 1 0 0 0 0 0 0 0 0 1 SSW 0 0 0 0 0 0 0 0 0 0 0 0 0 SW 1 0 2 2 0 0 0 0 0 0 0 0 5 WSW 1 2 0 0 0 0 0 0 0 0 0 0 3 W 2 3 2 0 0 0 0 0 0 0 0 0 7 WNW 1 2 3 1 0 0 0 0 0 0 0 0 7 NW 1 0 3 1 0 0 0 0 0 0 0 0 5 NNW 0 2 4 0 1 0 0 0 0 0 0 0 7 TOTAL 17 27 51 47 11 0 0 0 0 0 0 "0 153 NUMBER OF CALMS: 2 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 155 TOTAL HOURS FOR THE PERIOD: 155 STABILITY CLASS G FROM 1/01/08 0:00 TO 3/31/08 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 8 7 0 0 0 0 0 0 0 0 0 0 15 NNE 7 8 1 0 0 0 0 0 0 0 0 0 16 NE 8 12 6 0 0 0 0 0 0 0 0 0 26 ENE 18 24 47 9 0 0 0 0 0 0 0 0 98 E 7 20 13 3 0 0 0 0 0 0 0 0 43 ESE 3 6 1 0 0 0 0 0 0 0 0 0 10 SE 1 1 0 0 0 0 0 0 0 0 0 0 2 SSE 2 1 0 1 0 0 0 0 0 0 0 0 4 S 0 0 2 0 0 0 0 0 0 0 0 0 2 SSW 1 0 0 0 0 0 0 0 0 0 0 0 1 SW 1 0 0 1 0 0 0 0 0 0 0 0 2 WSW 0 0 1 0 0 0 0 0 0 0 0 0 1 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 2 0 1 0 0 0 0 0 0 0 0 0 3 NW 3 4 4 0 1 0 0 0 0 0 0 0 12 NNW 4 3 0 0 0 0 0 0 0 .0 0 0 7 TOTAL 65 86 76 14 1 0 0 0 0 "0 0 0 242 NUMBER OF CALMS: 4 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 246 TOTAL HOURS FOR THE PERIOD: 246 37

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 4/01/08 0:00 TO 6/30/08 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 15 19 29 16 24 8 0 0 0 0 0 133 NNE 13 5 14 23 12 3 0 0 0 0 0 0 70 NE 15 8 9 17 8 8 0 0 0 0 0 0 65 ENE 11 10 13 11 5 1 0 0 0 0 0 0 51 E 9 14 .5 12 4 1 0 0 0 0 0 0 45 ESE 9 13 11 15 7 2 0 0 0 0 0 0 57 SE 5 14 29 89 49 35 13 0. 0 0 0 0 234 SSE 4 12 20 53 53 126 76 3 0 0 0 0 347 S 4 10 18 50 63 94 72 6 0 0 0 0 317 SSW 4 16 10 31 28 30 16 0 0 0 0 0 135 SW 4 8 13 23 22 20 6 0 0 0 0 0 96 WSW 3 7 12 15 23 10 0 0 0 0 0 0 70 W 10 18 13 16 22 19 0 .0 0 0 0 0 98 WNW 13 17 17 15 16 26 9 0 . 0 0 0 0 113 NW 23 38 22 12 23 13 9 0 0 0 0 0 140 NNW 29 25 14 13 20 28 19 0 0 0 0 0 148 TOTAL 178 230 239 424 371 440 228 9 0 0 0 0 2119 NUMBER OF CALMS: 20 NUMBER OF INVALID HOURS: 45 NUMBER OF VALID HOURS: 2139 TOTAL HOURS FOR THE PERIOD: 2184 STABILITY CLASS A FROM 4/01/08 0:00 TO 6/30/08 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 0 1 0 0 0 0 0 1 MNE 0 0 0 1 0 0 0 0 0 0 0 0 1 NE 0 0 0 0 0 1 0 0 0 0 0 0 1 ENE 0 0 0 1 2 1 0 0 0 0 0 0 4 E 0 0 0 1 3 0 0 0 0 0 0 0 4 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 1 3 2 1 0 0 0 0 0 7 SSE 0 0 0 0 1 8 8 0 0 0 0 0 17 S 0 0 0 0 1 1 5 1 0 0 0 0 8 SSW 0 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 1 0 0 0 0 0 0 0 0 1 WSW 0 0 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 1 0 1 2 0 0 0 0 0 4 NW 0 0 0 0 0 2 1 0 0 0 0 0 3 NNW 0 0 0 0 0 0 2 0 0 0 0 0 2 TOTAL 0 0 0 6 10 16 20 1 0 0 0 0 53 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 53 TOTAL HOURS FOR THE PERIOD: 53 38

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 4/01/08 0:00 TO 6/30/08 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 0 2 0 0 0 0 0 2 NNE 0 0 0 0 0 0 0 0 0 0 0 0 .0 NE 0 0 0 1 0 1 0 0 0 0 0 0 2 ENE 0 0 0 2 0 0 0 0 0 0 0 0 2 E 0 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 1 0 2 0 0 0 0 0 3 SSE 0 0 0 2 2 3 6 1 0 0 0 0 14 S 0 0 0 1 0 0 6 0 0 0 0 0 7 SSW 0 0 0 0 0 0 1 0 0 0 0 0 1 SW 0 0 0 0 0 1 0 0 0 0 0 0 1 WSW 0 0 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 2 3 0 0 0 0 0 5 NW 0 0 0 0 0 0 3 0 0 0 0 0 3 NNW 0 0 0 0 0 1 5 0' 0 0 0 0 6 TOTAL 0 0 0 6 3 8 28 1 0 0 0 0 46 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 46 TOTAL HOURS FOR THE PERIOD: 46 STABILITY CLASS C FROM 4/01/08 0:00 TO 6/30/08 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 0 1 1 0 0 0 0 0 3 NNE 0 0 0 2 2 0 0 0 0 0 0 0 4 NE 0 0 0 2 1 1 0 0 0 0 0 0. 4 ENE 0 0 0 0 1 0 0 0 0 0 0 0 1 E 0 0 0 1 1 0 0 0 0 0 0 0 2 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 1 1 0 2 0 0 0 0 0 4 SSE 0 0 0 0 0 7 3 2 0 0 0 0 12 S 0 0 0 0 2 4 12 0 0 0 0 0 18 SSW 0 0 0 0 0 4 1 0 0 0 0 0 5 SW 0 0 0 0 0 2 0 0 0 0 0 0 2 WSW 0 0 0 0 0 1 0 0 0 0 0 0 1 W 0 0 0 0 0 1 0 0 0 0 0 0 1 WNW 0 0 0 0 0 2 0 0 0 0 0 0 2 NW 0 0 0 0 2 0 1 0 0 0 0 0 3 NNW 0 0 0 0 0 1 2 0 0 0 0 0 3 TOTAL 0 0 0 7 10 24 22 2 0 0 0 0 65 ,

NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 65 TOTAL HOURS FOR THE PERIOD: 65 39

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 4/01/08 0:00 TO 6/30/08 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 1 1 9 9 17 4 0 0 0 0 0 42 NNE 0 0 4 7 7 1 0 0 0 0 0 0 19 NE 0 .0 3 5 5 2 0 0 0 0 0 0 15 ENE 0 0 1 6 1 0 0 0 0 0 0 0 8 E 0 0 1 5 0 0 0 0 0 0 0 0 6 ESE 0 0 2 10 4 0 0 0 0 0 0 0 16 SE 1 1 3 25 21 15 7 0 0 0 0 0 73 SSE, 0 3 8 22 23 72 45 0 0 0 0 0 173 S 0 0 0 4 24 60 43 5 0 0 0 0 136 SSW 0 3 1 7 15 23 13 0 0 0 0 0 62 SW, 0 1 3 12 18 14 6 0 0 0 0 0 54 WSW 0 0 5 12 21 9 0 0 0 0 0 0 47 W 0 1 6 12 20 18 0 0 0 0 0 0 57 WNW 1 1 3 12 13 21 4 0 0 0 0 0 55 NW 0 3 3 2 17 9 4 0 0 0 0 0 38 NNW 0. 1 1 5 13 18 9 0 0 0 0 0 47 TOTAL 3 15 45 155 211 279 135 5 0 0 0 0 848 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 848 TOTAL HOURS FOR THE PERIOD: 848 STABILITY CLASS E FROM 4/01/08 0:00 TO -6/30/08 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 1 4 9 6 6 0 0 0 0 0 0 27 NNE 1 2 7 9 3 2 0 0 0 0 0 0 24 NE 1 1 4 5 2 3 0 0 0 0 0 0 16 ENE 3 5 4 2 1 0 0 0 0 0 0 0 15 E 2 7 2 4 0 1 0 0 0 0 0 0 16 ESE 1 3 5 3 3 1 0 0 0 0 0 0 16 SE 1 8 17 51 22 18 1 0 0 0 0 0 118 SSE 1 2 7 27 25 36 14 0 0 0 0 0 112 S 0 4 12 31 31 28 6 0 0 0 0 0 112 SSW 1 7 9 18 13 3 1 0 0 0 0 0 52 SW 0 5 8 8 4 2 0 0 0 0 0 0 27 WSW 0 1 4 3 2 0 0 0 0 0 0 0 10 W 0 3 2 4 2 0 0 0 0 0 0 0 11 WNW 3 3 7 2 2 0 0 0 0 0 0 0 17 NW 2 5 5 6 3 2 0 0 0 0 0 0 23 NNW 1 4 1 7 7 7 1 0 0 0 0 0 28 TOTAL 18 61 98 189 126 109 23 0 0 0 0 0 624 NUMBER OF CALMS: 1 NUMBER OF INVALID HOURS: 0 NUMBER.OF VALID HOURS: 625 TOTAL HOURS FOR THE PERIOD: 625 40

River Bend Station R d2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 4/01/08 0:00 TO 6/30/08 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 5 3 7 8 1 0 0 0 0 0 0 0 24 NNE 3 3 2 3 0 0 0 0 0 0 0 0 11 NE .6 2 2 4 0 0 0 0 0 0 0 0 14 ENE 2 4 6 0 0 0 0 0 0 0 0 0 12 E 3 3 1 1 0 0 0 0 0 0 0 0 .8 ESE 6 8 3 1 0 1 0 0 0 0 0 0 19 SE 2 5 9 11 1 0 0 0 0 0 0 0 28 SSE 1 5 4 2 2 0 0 0 0 0 0 0 14 S 1 5 3 11 3 1 0 0 0 0 0 0 24 SSW 1 5 0 6 0 0 0 0 0 0 0 0 12 SW 1 2 2 2 0 0 0 0 0 0 0 0 7 WSW 1. 5 2 0 0 0 0 0 0 0 0 0 8 W 4 7 3 0 0 0 0 0 0 0 0 0 14 WNW 1 3 2 0 1 0 0 0 0 0 0 0 7 NW 3 6 4 4 1 0 0 0 0 0 0 0 18 NNW 9 4 5 1 0 1 0 0 0 0 0 0 20 TOTAL 49 70 55 54 9 3 0 0 0 0 0 0 240 NUMBER OF CALMS: 4 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 244 TOTAL HOURS FOR THE PERIOD: 244 STABILITY CLASS G FROM 4/01/08 0:00 TO 6/30/08 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 15 10 7 2 0 0 0 0 0 0 0 0 34 NNE 9 0 1 1 0 0 0 0 0 0 0 0 11 NE 8 5 0 0 0 0 0 0 0 0 0 0 13 ENE 6 1 2 0 0 0 0 0 0 0 0 0 9 E 4 4 1 0 0 0 0 0 0 0 0 0 9 ESE 2 2 1 1 0 0 0 0 0 0 0 0 6 SE 1 0 0 0 0 0 0 0 0 0 0 0 1 SSE 2 2 1 0 0 0 0 0 0 0 0 0 5 S 3 1 3 3 2 0 0 0 0 0 0 0 12 SSW 2 1 0 0 0 0 0 0 0 0 0 0 3 SW 3 0 0 0. 0 1 0 0 0 0 0 0 4 WSW 2 1 1 0 0 0 0 0 0 0 0 0 4 W 6 7 2 0 0 0 0 0 0 0 0 0 15 WNW 8 10 5 0 0 0 0 0 0 0 0 0 23 NW 18 24 10 0 0 0 0 0 0 0 0 0 52 NNW 19 16 7 0 0 0 0 0 0 0 0 0 42 TOTAL 108 84 41 7 2 1 0 0 0 0 0 0 243 NUMBER OF CALMS: 15 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 258 TOTAL HOURS FOR THE PERIOD: 258 41

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 7/01/08 0:00 TO 9/30/08 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 19 24 19 45 29 25 7 0 0 0 0 0 168 NNE 21 13 25 49 26 29 5 3 0 0 0 0 171 NE 20 24 26 49 33 28 1 1 1 0 0 0 183 ENE 5 21 18 14 13 14 0 0 2 0 0 0 87 E 4 11 8 14 5 3 0 1 0 0 0 0 46 ESE 6 13 13 11 3 5 0 1 0 0 0 0 52 SE 3 10 17 19 15 19 3 3 1 0 0 0 90 SSE 8 7 7 23 15 16 13 9 0 0 0 0 98 S 2 7 9 17 23 25 14 1 0 0 0 0 98 SSW 5 7 9 32 16 29 9 1 0 0 0 0 108 SW 7 6 16 26 23 31 2 0 0 0 0 0 111 WSW 3 13 12 18 19 27 4 0 0 0 0 0 96 W 13 12 15 18 24 28 2 0 0 0 0 0 112 WNW 13 17 15 23 23 37 9 0 0 0 0 0 137 NW 35 33 21 18 18 17 6 0 0 0 0 0 148 NNW 26 41 15 27 16 20 3 0 0 0 0 0 148 TOTAL 190 259 245 403 301 353 78 20 4 0 0 0 1853 NUMBER OF CALMS: 25 NUMBER OF INVALID HOURS: 330 NUMBER OF VALID HOURS: 1878 TOTAL HOURS FOR THE PERIOD: 2208 STABILITY CLASS A FROM 7/01/08 0:00 TO 9/30/08 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

-- - -- - - -- - - -- - - - -- 0-0 N 0 0 0 0 2 7 0 0 0 0 0 0 9 NNE 0 0 0 0 2 12 0 0 0 0 0 0 14 NE 0 0 0 0 8 19 0 0 0 0 0 0 27 ENE 0 0 0 1 9 11 0 0 0 0 0 0 21 E 0 0 0 2 5 1 0 0 0 0 0 0 8 ESE 0 0 0 0 1 3 0 0 0 0 0 0 4 SE 0 0 0 0 1 3 0 0 0 0 0 0 4 SSE 0 0 0 0 1 1 1 0 0 0 0 0 3 S 0 0 0 0 0 1 3 0 0 0 0 0 4 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 1 0 0 0 0 0 0 1 W 0 0 0 0- 0 1 0 0 0 0 0 0 1 WNW 0 0 0 0 0 1 0 0 0 0 0 0 1 NW 0 0 0 0 0 4 0 0 0 0 0 0 4 NNW 0 0 0 0 1 9 1 0 0 0 0 0 11 TOTAL 0 0 0 3 30 75 .7 0 0 0 0 0 115 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 115 TOTAL HOURS FOR THE PERIOD: 115 42

River Bend Station 20(18 Regulatory Guide 1.21 4/28/200)9 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 7/01/08 0:00 TO 9/30/08 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 NNE 0 0 0 1 7 2 2 0 0 0 0 0 12 NE 0 0 0 3 2 1 0 0 0 0 0 0 6 ENE 0 0 1 2 1 1 0 0 0 0 0 0 5 E 0 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 1 0 0 0 0 0 0 0 1 SE 0 0 1 0 0 0 1 0 0 0 0 0 2 SSE 0 0 0 0 0 0 0 0 0 0 0 0 0 S 0 0 0 0 0 0 4 0 0 0 0 0 4 SSW 0 0 0 0 0 1 1 0 0 0 0 0 2 SW 0 0 0 0 4 2 0 0 0 0 0 0 6 WSW 0 0 0 0 1 2 0 0 0 0 0 0 3 W 0 0 0 0 1 1 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 1 0 0 0 0 0 0 1 NNW 0 0 0 1 1 1 0 0 0 0 0 0 3 TOTAL 0 .0 2 7 18 19 11 0 0 0 0 0 57 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 57 TOTAL HOURS FOR THE PERIOD: 57 STABILITY CLASS C FROM 7/01/08 0:00 TO 9/30/08 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 1 3 0 0 0 0 0 6 NNE 0 0 0 2 1 4 0 0 0 0 0 0 7 NE" 0 0 1 1 3 2 0 0 0 0 0 0 7 ENE 0 0 0 1 1 0 0 0 0 0 0 0 2 E 0 0 0 1 0 0 0 0 0 0 0 0 1 ESE 0 0 0 1 1 0 0 0 0 0 0 0 2 SE 0 0 0 0 0 1 0 0 0 0 0 0 1 SSE 0 0 0 1 0 2 1 0 0 0 0 0 4 S 0 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 2 0 1 1 0 0 0 0 0 4 SW 0 0 0 0 1 4 0 0 0 0 0 0 5 WSW 0 0 0 0 2 5 1 0 0 0 0 0 8 W 0 0 0 1 2 4 0 0 0 0 0 0 7 WNW 0 0 0 0 1 4 1 0 0 0 0 0 6 NW 0 0 0 0 1 1 1 0 0 0 0 0 3 NNW 0 0 0 0 0 1 1 0 0 0 0 0 2 TOTAL 0 0 "1 10 15 30 9 0 0 0 0 0 65 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 65 TOTAL HOURS FOR THE PERIOD: 65 43

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 7/01/08 0:00 TO 9/30/08 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 3 2 8 20 11 3 0 0 0 0 0 47 NNE 0 2 3 13 12 5 0 0 0 0 0 0 35 NE 0 2 5 13 11 3 0 0 1 0 0 0 35 ENE 0 2 5 5 2 2 0 0. 2 0 0 0 18 E 0 0 5 5 0 1 0 1 0 0 0 0 12 ESE 0 2 3 4 0O 1 0 1 0 0 0 0 11 SE 0 0 4 7 7 6 2 1 0 0 0 0 27 SSE 0 1 1 10 6 8 6 3 0 0 0 0 35 S 0 0 2 4 15 22 5 1 0 0 0 0 49, SSW 0 0 3 8 6 24 4 1 0 0 0 0 46 SW 0 1 2 12 14 22 1 0 0 0 0 0 52 WSW 0 0 3 13 16 19 2 0 0 0 0 0 53 W 0 0 2 12 19 22 1 0 0 0 0 0 56 WNW 0 1 2 12 15 24 0 0 0 0 0 0 54 NW 0 1 1 9 13 9, 1 0 0 0 0 0 34 NNW 0 2 2 7 10 7 0 0 0 0 0" 0 28 TOTAL 0 17 45 142 166 186 25 8 3 0 0 0 592 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 592 TOTAL HOURS FOR THE PERIOD: 592 STABILITY CLASS E FROM 7/01/08 0:00 TO 9/30/08 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 3 6 10 3 1 0 0 0 0 0 0 26 NNE 5 5 7 21 4 4 3 3 0 0 0 0 52 NE 4 11 17 26 9 3 1 1 0 0 0 0 72 ENE 1 12 7 4 0 0 0 0 0 0 0 0 24 E 0 8 2 6 0 1 0 0 0 0 0 0 17 ESE 2 8 6 6 0 1 0 0 0 0 0 0 23 SE 0 4 8 9 6 8 0 2 1 0 0 0 38 SSE 2 2 4 10 .8 5 5 6 0 0 0 0 42 S 0 3 6 9 8 2 2 0 0 0 0 0 30 SSW 0 3 4 19 9 3 1 0 0 0 0 0 39 SW 2 1 7 13 4 2 1 0 0 0 0 0 30 WSW 0 6 8 -4 0 0 1 0 0 0 0 0 19 W 2 3 9 5 i 0 1 '0 0 0 0 0 21 WNW 2 4 9 10 6 6 6 0 0 0 0 0 43 NW 6 3 8 7 4 1 4 0 0 0 0 0 33 NNW 1 7 1 5 4 2 1 0 0 0 0 0 21 TOTAL 30 83 109 164 66 39 26 12 1 0 0 0 530 NUMBER OF CALMS: 1 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 531 TOTAL HOURS FOR THE PERIOD: 531 44

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 7/01/08 0:00 TO 9/30/08 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 4 8 6 19 1 0 0 0 0 0 0 0 38 NNE 3 4 9 11 0 2 0 0 0 0 0 0 29 NE 10 5 3 6 0 0 0 0 0, 0 0 0 24 ENE 4 5 3 1 0 0 0 0 0 0 0 0 13 E 2 3 0 0 0 0 0 0 0 0 0 0 5 ESE 2 2 4 0 0 0 0 0 0 0 .0 0 8 SE 2'- 4 4 3 1 1 0 .0 0 6 0 0 15 SSE 4 4 2 2 0 0 0 0 0 0 0 0 12 S 2 3 1 4 0 0 0 0 0 0 0 0 10 SSW 1 3 1 3 1 0 0 0 0 0 0 0 9 SW 4 3 5 1 0 0 0 0 0 0 0 0 13 WSW 2 3 0 0 0 0 0 0 0 0 0 0 5 W 4 6 3 0 0 0 0 0 0 0 0 0 13 WNW 3 2 3 1 0 0 0 0 0 0 0 0 9 NW 9 9 8 1 0 1 0 0 0 0 0 0 28 NNW 6 7 1 5 0 0 0 0 0 0 0 0 19 TOTAL 62 71 53 57 3 4 0 0 . 0 0 i 0 0 250 NUMBER OF CALMS: 6 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 256 TOTAL HOURS FOR THE PERIOD: 256 STABILITY CLASS G FROM 7/01/08 0:00 TO 9/30/08 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 10 5 8 1 0 0 0 0 0 0 0 36 NNE 13 2 6 1 0 0 0 0 0 0 0 0 22 NE 6 6 0 0 0 0 0 0 0 0 0 0 12 ENE 0 2 2 0 0 0 0 0 0 0 0 0 4 E 2 0 1 0 0 0 0 0 0 0 0 0 3 ESE 2 1 0 0 0 0 0 0 0 0 0 0 3 SE 1 2 0 0 0 0 0 0 0 0 0 0 3 SSE 2 0 0 0 0 0 0 0 0 0 0 0 2 S 0 1 0 0 0 0 0 0 0 0 0 0 1 SSW 4 1 1 0 0 0 0 0 0 0 0 0 6 SW 1 1 2 0 0 0 0 0 0 0 0 0 4 WSW 1 4 1 1 0 0 0 0 0 0 0 0 7 W 7 3 1 0 1 0 0, 0 0 0 0 0 12 WNW 8 10 1 0 1 0 0 0 0 0 0 0 20 NW 20 20 4 1 0 0 0 0 0 0 0 0 45 NNW 19 25 11 9 0 0 0 0 0 0 0 0 64 TOTAL 98 88 35' 20 3 0 0 0 0 0 0 0 244 NUMBER OF CALMS: 18 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 262 TOTAL HOURS FOR THE PERIOD: 262 45

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 10/01/08 0:00 TO 12/31/08 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 20 20 23 38 20 62 38 0 0 0 0 0 221 NNE 42 12 15 42 32 42 19 0 0 0 0. 0 204 NE 25 15 17 37 38 37 4 0 0 0 0 0 173 ENE 29 20 17 40 32 27 0 0 0 0 0 0 165 E 18 16 19 20 16 5 0 0 0 0 0 0 94 ESE 8 11 32 34 23 25 1 0 0 0 0 0 134 SE 2 11 22 50 86 84 14 0 0 0 0 0 269 SSE 3 2 11 25 28 47 50 11 0 0 0 0 177 S 1 2 6 10 17 20 17 6 1 0 0 0 80 SSW 1 2 1 15 14 24 7 0 0 0 0 0 64 SW 4 2 6 11 5 15 4 0 0 0 0 0 47 WSW 2 7 4 9 9 15 1 0 0 0 0 0 47 W 3 6 6 10 13 9 3 0 0 0 0 0 50 WNW 8 10 14 18 9 19 9 0 0 0 0 0 87 NW 13 27 26 18 19 34 16 3 0 0 0 0 156 NNW 18 40 22 30 24 36 35 0 0 0 0 0 205 TOTAL 197 203 241 407 385 501 218 20 1 0 0 0 2173 NUMBER OF CALMS: 21 NUMBER OF INVALID HOURS: 14 NUMBER OF VALID HOURS: 2194 TOTAL HOURS FOR THE PERIOD: 2208 STABILITY CLASS A FROM 10/01/08 0:00 TO 12/31/08 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 1 3 19 14 0 0 0 0 0 38 NNE 0 0 0 0 5 17 9 0 0 0 0 0 31 NE 0 1 0 1 7 13 3 0 0 0 0 0 25 ENE 0 0 0 2 11 13 0 0 0 0 0 0 26 E 0 0 0 2 4 5 0 0 0 0 0 0 11 ESE 0 0 0 6 7 11 0 0 0 0 0 0 24 SE 0 0 0 1 20 39 4 0 0 0 0 0 64 SSE 0 0 0 1 6 15 15 5 0 0 0 0 42 S 0 0 0 1 2 6 4 0 0 0 0 0 13 SSW 0 0 0 0 1 3 3 0 0 0 0 0 7 SW 0 0 0 0 0 4 0 0 0 0 0 0 4 WSW 0 0 0 2 5 7 1 0 0 0 0 0 15 W 0 0 0 0 4 7 3 0 0 0 0 0 14 WNW 0 0 0 0 1 9 4 0 0 0 0 0 14 NW 0 0 0 0 1 10 6 3 0 0 0 0 20 NNW 0 0 0 1 4 8 14 0 0 0 0 0 27 TOTAL 0 1 1 18 81 186 80 8 0 0 0 0 375 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 375 TOTAL HOURS FOR THE PERIOD: 375 46

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS.B FROM 10/01/08 0:00 TO 12/31/08 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 B 3 0 0 , 0 0 0 15 NNE 0 0 0 4 3 2 3 0 0 0 0 0 12 NE 0 0 1 1 0 1 0 0 0 0 0 0 3 ENE 0 0 2 2 1 0 0 0 0 0 0 0 5 E 0 1 1 1 0 0 0 0 0 0 0 0 3 ESE 0 0 1 3 0 0 0 0 0 0 0 0 4 SE 0 0 0 3 3 2 1 0 0 0 0 0 9 SSE 0 0 0 0 4 4 2 2 0 0 0 0 12 S 0 0 0 1 1 2 1 0 0 0 0 0 5 SSW 0 0 0 1 1 1 0 0 0 0 0 0 3 SW 0 0 0 0 0 1 2 0 0 0 0 0 3 WSW 0 0 0 1 1 5 0 0 0 0 0 0 7 W 0 0 0 0 1 1 0 0 0 0 0 0 2 WNW 0 0 0 1 1 0 1 0 0 0 0 0 3 NW 0 0 1 1 2 2 2 0 0 0 0 0 8 NNW 0 0 0 0 1 4 3 0 0 0 0 0 8 TOTAL 0 1 6 20 22 33 18 2 0 0 0 0 102 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 102 TOTAL HOURS FOR THE PERIOD: 102 STABILITY CLASS C FROM 10/01/08 0:00 TO 12/31/08 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 7 7 0 0 0 0 0 18 NNE 0 0 0 2 5 2 1 0 0 0 0 0 10 NE 0 0 1 1 3 0 0 0 0 0 0 0 5 ENE 0 0 3 3 2 0 0 0 0 0 0 0 8 E 0 0 0 3 0 0 0 0 0 0 0 0 3 ESE 0 0 0 1 0 1 0 0 0 0 0 0 2 SE 0 0 0 1 5 3 0 0 0 0 0 0 9 SSE 0 0 1 2 3 7 3 0 0 0 0 0 16 S 0 0 0 0 1 0 5 1 0 0 0 0 7 SSW 0 0 0 0 3 2 0 0 0 0 0 0 5 SW 0 0 0 1 1 2 0 0 0 0 0 0 4 WSW 0 0 1 1 1 2 0 0 0 0 0 0 5 W 0 0 0 1 2 0 0 .0 0 0 0 0 3 WNW 0 0 0 1 1 1 1 0 0 0 0 0 4 NW 0 0 0 2 3 6 1 0 0 0 0 0 12 NNW 0 0 0 3 2 7 3 0 0 0 0 0 15 TOTAL 0 0 6 23 35 40 21 1 0 0 0 0 126 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 126 TOTAL HOURS FOR THE PERIOD: 126 47

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 10/01/08 0:00 TO 12/31/08 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 1 3 12 8 27 14 0 0 0 0 0 66 NNE 0 1 5 18 16 21 6 0 0 0 0 0 67

-NE 1 1 2 5 14 17 1 0 0 0 0 0 41 ENE 0 2 2 8 12 7 0 0 0 0 0 0 31 E 0 3 .10 4 9 0 0 0 0 0 0 0 26 ESE 0 2 7 13 13 11 1 0 0 0 0 0 47 SE 0 2 7 20 35 34 9 0 0 0 0 0 107 SSE 1 0 3 6 8 20 30 4 0 0 0 0 72 S 0 0 1 5 12 12 7 5 1 0 0 0 43 SSW 0 0 0 9 8 18 4 0 0 0 0 0. 39 SW 0 0 1 8 3 8 2 0 0 0 0 0 22 WSW 0 2 1 5 2 1 0 0 0 0 0 0 11 W 1 0 1 7 6 1 0 0 0 0 0 0 16 WNW 0 0 3 7 4 9 3 0 0 0 0 0 26 NW 0 0 2 9 11 15 7 0 0 0 0 0 44 NNW 0 1 5 7 14 17 15 0 0 0 0 0 59 TOTAL 4 15 53 143 175 218 99 9 1 0 0 0 717 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 717 TOTAL HOURS FOR THE PERIOD: 717 STABILITY CLASS E FROM 10/01/08 0:00 TO 12/31/08 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 2 6 13 2 1 0 0 0 0 0 0 25 NNE 0 2 3 14 3 0 0. 0 0 0 0 0 '22 NE 0 0 2 11 .11 6 0 0 0 0 0 0 30 ENE 1 1 2 11 3 5 0 0 0 0 0 0 23 E 3 2 0 8 3 0 0 0 0 0 0 0 16 ESE 0 3 13 9 2 2 0 0 0 0 0 0 29 SE 0 5 11 21 22 5 0 0 0 0 0 0 64 SSE 1 1 5 13 6 1 0 0 0 0 0 0 27 S 0 1 3 2 1 0 0 .0 0 0 0 0 7 SSW 0 1 1 4 1 0 0 0 0 0 0 0 7 SW 2 2 2 2 1 0 0 0 0 0 0 0 9 WSW 0 4 1 0 0 0 0 0 0 0 0 0 5 W 0 2 2 2 0 0 0 0 0 0 0 0 6 WNW 1 2 3 5 2 0 0 0 0 0 0 0 13 NW. 1 3 7 6 1 1 0 0 0 0 0", 0 19 NNW 0 0 1 10 3 0 0 0 0 0 0 0 14 TOTAL 10 31 62 131 61 21 0 0 0 0 0 0 316 NUMBER OF CALMS: 2 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 318 TOTAL HOURS FOR THE PERIOD: 318 48

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 10/01/08 0:00 TO 12/31/08 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 1 3 6 1 0 0 0 0 0 0 0 14 NNE 4 1 5 3 0 0 0 0 0 0 0 0 13 NE 0 1 2 14 3 0 0 0 0 0 0 0 20 ENE 0 4 1 6 3 2 0 0 0 0 0 0 16 E 3 1 4 1 0 0 0 0 0 0 0 0 9 ESE 0 5 8 2 1 0 0 0 0 0 0 0 16 SE 0 2 3 3 1 1 0 0 0 0 0 0 10 SSE 0 0 1 3 1 0 0 0 0 0 0 0 5 S 1 0 2 1 0 0 0 0 0 0 0 0 4 SSW 0 1 0 1 0 0 0 0 0 0 0 0 2 SW 0 0 2 0 0 0 0 0 0 0 0 0 2 WSW 1 0 1 60 0 0 0 0 0 0 0 0 2 W 1 2 0 0 0 0 0 0 0 0 0 0 3 WNW 1 5 4 3 0 0 0 0 0 0 0' 0 13 NW 2 4 8 0 1 0 0 0 0 0 0 0 15 NNW 3 6 2 5 0 0 0 0 0 0 0 0 16 TOTAL 19 33 46 48 11 3 0 0 0 0 0 0 160 NUMBER OF CALMS: 1 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 161 TOTAL HOURS FOR THE PERIOD: 161 STABILITY CLASS G FROM 10/01/08 0:00 TO 12/31/08 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 15 16 10 4 0 0 0 0 0 0 0 0 45 NNE 38 8 2 1 0 0 0 0 0 0 0 0 49 NE 24 12 9 4 0 0 0 0 0 0 0 0 49 ENE 28 13 7 8 0 0 0 0 0 0 0 0 56 E 12 9 4 1 0 0 0 0 0 0 0 0 26 ESE 8 1 3 0 0 0 0 0 0 0 0 0 12 SE 2 2 1 1 0 0 0 0 0 0 0 0 6 SSE 1 1 1 0 0 0 0 0 0 0 0 0 3 S 0 1 0 0 0 0 0 0 0 0 0 0 1 SSW 1 0 0 0 0 0 0 0 0 0 0 0 1 SW 2 0 1 0 0 0 0 0 0 0 0 0 3 WSW 1 1 0 0 0 0 0 0 0 0 0 0 2 W 1 2 3 0 0 0 0 0 0 0 0 0 6 WNW 6 3 4 1 0 0 0 0 0 0 0 0 14 NW 10 20 8 0 0 0 0 0 0 0 0 0 38 NNW 15 33 14 4 0 0 0 0 0 0 0 0 66 TOTAL 164 122 67 24 0 0 0 0 0 0 0 0 377 NUMBER OF CALMS: 18

NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 395 TOTAL HOURS FOR THE PERIOD: 395 49

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 1/01/08 0:00 TO 3/31/08 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 3 9 42 78 12 0 0 0 0 145 NNE 0 1 2 7 9 62 64 10 0 0 0 0 155 NE 0 0 1 2 5 38 62 12 0 0 0 0 120 ENE 0 0 0 2 9 24 69 13 1 0 0 0 118 E 0 0 2 2 11 50 74 19 0 0 0 0 158 ESE 0 0 2 0 7 36 174 43 2 0 0 0 264 SE 0 0 0 2 6 27 87 31 4 0 0 0 157 SSE 0 0 1 3 7 27 147 50 19 1 0 0 255 S 0 1 0 1 6 47 69 42 10 0 0 0 176 SSW 0 0 1 3 3 22 37 24 1 0 0 0 91 SW 0 0 0 5 7 16 15 3 0 0 0 0 46.

WSW 0 1 1 5 5 10 12 7 1 0 0 0 42 W 0 0 0 3 9 19 16 7 1 0 0 '0 55 WNW 0 2 1 1 3 10 21 24 8 0 0 0 70 NW 0 0 1 3 12 26 34 24 6 0 0 0 106 NNW 0 1 0 5 4 45 71 25 6 0 0 0 157 TOTAL 0 6 13 47 112 501 1030 346 59 1 0 0 2115 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 69 NUMBER OF VALID HOURS: 2115 TOTAL HOURS FOR THE PERIOD: 2184 STABILITY CLASS A FROM 1/01/08 0:00 TO 3/31/08 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 0 2 2 0 0 0 0 4 NNE 0 0 0 0 0 0 2 1 0 0 0 0 3 NE 0 0 0 0 0 1 7 1 0 0 0 0 9 ENE 0 0 0 0 0 2 6 1 1 0 0 0 10 E 0 0 0 0 0 3 5 4 0 0 0 0 12 ESE 0 0 0 0 0 6 13 11 1 0 0 0 31 SE 0 0 0 0 0 1 4 6 0 0 0 0 11 SSE 0 0 0 0 0 0 4 14 2 0 0 0 20 S 0 0 0 0 0 0 3 1 0 0 0 0 4 SSW 0 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 1 0 0 0 1 NW 0 0 0 0 0 0 0 1 0 0 0 0 1 NNW 0 0 0 0. 0 0 0 2 0 0 0 0 2 TOTAL 0 0 0 0 0 13 46 44 5 0 0 0 108 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 108 TOTAL HOURS FOR THE PERIOD: 108 50

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 1/01/08 0:00 TO 3/31/08 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 0 2 2 0 0 0 0 4 NNE 0 0 0 0 0 5 1 0 0 0 0 0 6 NE 0 0 0 0 0 0 0 1 0 0 0 0 1 ENE 0 0 0 0 0 1 1 0 0 0 0 0. 2 E 0 0 0 0 0 4 1 0 0 0 0 0 5 ESE 0 0 0 0 0 0 1 0 0 0 0 0 1 SE 0 0 0 0 0 1 3 2 0 0 0 0 6 SSE 0 0 0 0 0 0 5 3 2 0 0 0 10

.S 0 0 0 0 0 0 3 4 0 0 0 0 7 SSW 0 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 1 1 0 0 0 2 NW 0 0 0 0 0 0 2 2 0 0 0 0 4 NNW 0 0 0 0 0 0 0 0 1 0 0 0 1 TOTAL 0 0 0 0 0 11 19 15 4 0 0 0 49 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 49 TOTAL HOURS FOR THE PERIOD: 49 STABILITY CLASS C FROM 1/01/08 0:00 TO 3/31/08 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 0 0 2 0 0 0 0 2 NNE 0 0 0 0 0 0 3 0 0 0 0 0 3 NE 0 0 0 0 0 2 1 1 0 0 0 0 4 ENE 0 0 0 0 0 1 1 0 0 0 0 0 2 E 0 0 0 0 0 3 1 0 0 0 0 0 4 ESE 0 0 0 0 0 2 4 0 0 0 0 0 6 SE 0 0 0 0 0 1 7 0 0 0 0 0 8 SSE 0 0 0 0 0 0 6 2 0 0 0 0 8 S 0 0 0 0 0 1 3 3 1 0 0 0 8 SSW 0 0 0 0 0 0 1 1 0 0 0 0 2 SW 0 0 0 0 0 0 1 0 0 0 0 0 1 WSW 0 0 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 2 1 0 0 0 3 NW 0 0 0 0 0 0 0 2 0 0 0 0 2 NNW 0 0 0 0 0 .0 8 5 0 0 0 0 13 TOTAL 0 0 0 0 0 10 36 18 2 0 0 0 66 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 66 TOTAL HOURS FOR THE PERIOD: 66 51

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 1/01/08 0:00 TO 3/31/08 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 5 25 43 3 0 0 0 0 77 NNE 0 0 0 3 5 24 25 7 -0 0 0 0 64 NE 0 0 1 0 2 15 16 6 0 0 0 0 40 ENE 0 0 0 1 5 10 17 3 0 0 0 0 36 E 0 0 1 1 6 8 15 7 0 0 0 0 38 ESE 0 0 1 0 2 10 32 13 0 0 0 0 58 S8 0 0 0 2 3 10 16 11 2 0 0 0 44 SSE 0 0 0 1 1 7 39 24 11 1 0 0 84 5 0 0 0 0 1 13 31 31 5 0 0 0 81 SSW 0 0 0 1 2 9 22 20 1 0 0 0 55 SW 0 0 0 1 5 4 6 2 0 0 0 0 18 WSW 0 0 0 2 1 6 10 5 1 0 0 0 25 W 0 0 0 0 6 11 10 7 1 0 0 0 35 WNW 0 1 0 0 2 1 10 16 5 0 0 0 35 NW 0 0 0 2 4 12 14 18 6 0 0 0 56 NNW 0 0 0 3 2 29 30 13 4 0 0 0 81 TOTAL 0 1 3 18 52 194 336 186 36 1 0 0 827 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 827 TOTAL HOURS FOR THE PERIOD: 827 STABILITY CLASS E FROM 1/01/08 0:00 TO 3/31/08 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 0 2 12 26 3 0 0 0 0 44 NNE 0 0 0 0 0 15 29 2 0 0 0 0 46 NE 0 0 0 1 0 9 17 3 0 0 0 0 30 ENE 0 0 0 0 1 3 15 9 0 0 0 0 28 8 0 0 0 1 3 12 28 7 0 0 0 0 51 ESE 0 0 0 0 1 8 89 19 1 0 0 0 118 SE 0 0 0 0 0 5 42 12 2 0 0 0 61 SSE 0 0 1 0 0 9 82 7 4 0 0 0 103 S 0 0 0 0 2 12 28 3 4 0 0 0 49 SSW 0 0 0 0 0 6 13 3 0 0 0 0 22 SW 0 0 0 2 0 5 7 1 0 0 0 0 15 WSW 0 0 0 2 3 3 1 2 0 0 0 0 11 W 0 0 0 1 1 2 0 0 0 0 0 0 4 WNW 0 0 0 0 0 4 9 5 0 0 0 0 18 NW 0 0 0 0 0 5 12 1 0 0 0 0 18 NNW 0 0 0 0 0 10 30 5 1 0 0 0 46 TOTAL 0 0 2 7 13 120 428 82 12 0 0 0 664 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 664 TOTAL HOURS FOR THE PERIOD: 664 52

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 1/01/08 0:00 TO 3/31/08 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 4 0 0 0 0 0 6 NNE 0 1 0 0 0 9 3 0 0 0 0 0 13 NE 0 0 0 0 2 3 11 0 0 0 0 0 16 ENE 0 0 0 0 1 3 13 0 0 0 0 0 17 E 0 0 0 0 1 8 12 1 0 0 0 0 22 ESE 0 0 0 0 1 3 19 0 0 0 0 0 23 SE 0 0 0 0 1 2 8 0 0 0 0 0 11 SSE 0 0 0 0 1 3 5 0 0 0 0 0 9 S 0 0 0 0 1 3 1 0 0 0 0 0 5 SSW 0 0 0 0 0 1 0 0 0 0 0 0 1 SW 0 0 0 0 0 4 1 0 0 0 0 0 5 WSW 0 0 0 1 0 1 1 0 0 0 0 0 3 W 0 0 0 0 1 3 4 0 0 0 0 0 8 WNW 0 0 0 0 ý0 0 2 0 0 0 0 0 2 NW 0 0 0 0 1 2 6 0 0 0 0 0 9 NNW 0 0 0 1 0 2 2 0 0 0 0 0 5 TOTAL 0 1 0 2 10 49 92 1 0 0 0 0 155 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: '155 TOTAL HOURS FOR THE PERIOD: 155 STABILITY CLASS G FROM 1/01/08 0:00 TO 3/31/08 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 2 3 1 0 0 0 0 0 8 NNE 0 0 2 4 4 9 1 0 0 0 0 0 20 NE 0 0 0 1 1 8 10 0 0 0 0 0 20 ENE 0 0 0 1 2 4 16 0 0 0 0 0 23 E 0 0 1 0 1 12 12 0 0 0 0 0 26 ESE 0 0 1 0 3 7 16 0 0 0 0 0 27 SE 0 0 0 0 2 7 7 0 0 0 0 0 16 SSE 0 0 0 2 5 8 6 0 0 0 0 0 21 S 0 1 0 1 2 18 0 0 0 0 0 0 22 SSW 0 0 1 2 1 6 1 0 0 0 0 0 11 SW 0 0 0 2 2 3 0 0 0 0 t0 0 7 WSW 0 1 1 0 1 0 0 0 0 0 0 0 3 W 0 0 0 2 1 3 2 0 0 0 0 0 8 WNW 0 1 1 1 1 5 0 0 0 0 0 0 9 NW 0 0 1 1 7 7 0 0 0 0 0 0 16 NNW 0 1 0 1 2 4 1 0 0 0 0 0 9 TOTAL 0 4 8 20 37 104 73 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 53

River Bend Station . 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 4/01/08 0:00 TO 6/30/08 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 2 5 2 2 26 33 3 0 0 0 0 74 NNE 1 0 2 9 15 20 13 0 0 0 0 0 60 NE 0 1 1 9 7 17 39 2 0 0 0 0 76 ENE 0 0 2 10 8 23 24 0 1 0 0 0 68 E 0 1 0 12 9 18 9 3 0 0 0 0 52 ESE 1 0 3 9 13 52 98 18 2 0 0 0 196 SE 0 0 2 3 9 67 115 31 3 0 0 0 230 SSE 0 1 5 7 22 75 119 56 0 0 0 0 285 S 0 0 2 13 29 98 163 39 4 0 0 0 348 SSW 1 1 2 14 21 56 62 2 0 0 0 0 159 SW 1 0 1 5 16 44 21 6 0 0 0 0 94 WSW 0 2 3 8 20 49 27 0 0 0 0 0 109 W 1 1 3 4 19 49 26 0 0 0 0 0 103 WNW 0 0 3 6 11 40 24 5 2 0 0 0 91 NW 0 0 1 3 11 36 36 .5 2 0 0 0 94 NNW 0 2 3 3 6 19 50 17 0 0 0 0 100 TOTAL 6 11 38 117 218 689 859 187 14 0 0 0 2139 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 45 NUMBER OF VALID HOURS: 2139

,TOTAL HOURS FOR THE PERIOD: 2184 STABILITY CLASS A FROM 4/01/08 0:00 TO 6/30/08 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 0 0 0 0 0 0 1 NNE 0 0 0 0 0 1 0 0 0 0 0 0 1 NE 0 0 0 0 0 0 1 0 0 0 0 0 1 ENE 0 0 0 0 0 2 4 0 0 0 0 0 6 E 0 0 0 0 0 1 1 0 0 0 0 0 2 ESE 0 0 0 0 0 0 4 2 0 0 0 0 6 SE 0 0 0 0 0 0 5 3 0 0 0 0 8 SSE 0 0 0 0 0 1 2 9 0 0 0 0 12 S 0 0 0 0 0 0 3 2 1 0 0 0 6 SSW 0 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 1 0 0 0 0 0 0 0 1 WSW 0 0 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 3 1 0 0 0 4 NW 0 0 0 0 0 0 2 1 0 0 0 0 3 NNW 0 0 0 0 0 0 0 2 0 0 0 0 2 TOTAL 0 0 0 0 1 6 22 22 2 0 0 0 53 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 53 TOTAL HOURS FOR THE PERIOD: , 53 54

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 4/01/08 0:00 TO 6/30/08 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 0 0 1 0 0 0 0 1 NNE 0 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 3 1 0 0 0 0 0 4 E 0 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 1 0 0 0 0 0 0 0 1 SE 0 0 0 0 0 3 2 3 0 0 0 0 8 SSE 0 0 0 0 0 2 0 5 0 0 0 0 7 S 0 0 0 0 0 0 3 5 0 0 0 0 8 SSW 0 0 0 0 0 0 1 0 0 0 0 0 1 SW 0 0 0 0 0 1 0 0 0 0 0 0 1 WSW 0 0 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 0 0 1 0 0 0 0 0 1 WNW 0 0 0 0 0 0 3 0 1 0 0 0 4 NW 0 0 0 0 0 0 1 1 1 0 0 0 3 NNW 0 0 0 0 0 0 1 6 0 0 0 0 7 TOTAL 0 0 0 0 1 9 13 21 2 0 0 0 46 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 46 TOTAL HOURS FOR THE PERIOD: 46 STABILITY CLASS C FROM 4/01/08 0:00 TO 6/30/08 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 1 1 0 0 0 0 3 NNE 0 0 0 0 0 1 0 0 0 0 0 0 1 NE 0 0 0 0 0 2 0 0 0 0 0 0 2 ENE 0 0 0 0 1 1 3 0 0 0 0 0 5 E 0 0 0 0 0 2 0 0 0 0 0 0 2 ESE 0 0 0 0 0 1 2 0 0 0 0 0 3 SE 0 0 0 0 0 .0 2 1 1 0 0 0 4 SSE 0 0 0 1 0 0 7 4 0 0 .0 0 12 S 0 0 0 0 0 1 9 6 0 0 0 0 16 SSW 0 0 0 0 0 2 3 1 0 0 0 0 6 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 3 0 0 0 0 0 3 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 1 2 0 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 0 2 0 0 0 0 3 TOTAL 0 0 0 1 1 14 33 15 1 0 0 0 65 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 65 TOTAL HOURS FOR THE PERIOD: 65 55

K River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 4/01/08 0:00 TO 6/30/08 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 0 0 12 11 1 0 0 0 0 25 NNE 0 0 0 4 8 6 4 0 0 0 0 0 22 NE 0 0 0 5 4 5 6 0 0 0 0 0 20 ENE 0 0 1 2 4 6 8 0 0 0 0 0 21 E 0 1 0 4 1 3 0 0 0 0 0 0 9 ESE 1 0 1 4 3 16 20 4 0 0 0 -0 49 SE 0 0 1 1 3 20 29 18 2 0 0 0 74 SSE 0 0 1 5 7 33 47 34 0 0 0 0 127 S 0 0 0 3 13 28 71 21 3 0 0 0 139 SSW 0 0 0 5 11 16 35 1 0 0 0 0 68 SW 0 0 1 1 10 14 9 6 0 0 0 0 41 WSW 0 1 1 5 12 28 18 0 0 0 0 0 65 W 0 0 0 1 13 27 22 0 0 0 0 0 63 WNW 0 0 1 2 6 22 11 2 0 0 0 0 44 NW 0 0 1 3 7 10 11 2 1 0 0 0 35 NNW 0 0 3 1 2 10 23 7 0 0 0 0 46 TOTAL 1 2 12 46 104 256 325 96 6 0 0 0 848 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 848 TOTAL HOURS FOR THE PERIOD: 848 STABILITY CLASS E FROM 4/01/08 0:00 TO 6/30/08 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 1 8 13 0 0 0 0 0 25 NNE 0 0 2 2 4 5 2 0 0 0 0 0 15 NE 0 0 1 3 1 5 14 2 0 0 0 0 26 ENE 0 0 0 0 0 3 3 0 1 0 0 0 7 E 0 0 0 2 3 5 7 3 0 0 0 0 20 ESE 0 0 1 1 1 23 50 12 2 0 0 0 90 SE 0 0 1 1 1 23 48 5 0 0 0 0 79 SSE 0 1 0 1 7 21 54 4 0 0 0 0 88 S 0 0 0 4 2 37 64 5 0 0 0 0 112 SSW 0 1 1 2 3 25 17 0 0 0 0 0 49 SW 0 0 0 2 1 10 10 0 0 0 0 0 23 WSW 0 0 1 2 1 13 5 0 0 0 0 0 22 W 0 0 3 1 1 9 1 0 0 0 0 0 15 WNW 0 0 0 2 2 6 3 0 0 0 0 0 13 NW 0 0 0 0 1 8 6 1 0 0 0 0 16 NNW 0 1 0 0 1 6 17 0 0 0 0 0 25 TOTAL 0 3 12 24 30 207 314 32 3 0 0 0 625 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 625 TOTAL HOURS FOR THE PERIOD: 625 56

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 4/01/08 0:00 TO 6/30/08 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.....3.....0....0.....0.....00.......5.

N 0 0 0 0 0 2 3 0 0 0 0 0 5 NNE 0 0 0 1 0 3 6 0 0 0 0 0 12 NE 0 1 0 1 1 2 12 0 0 0 0 0 17 ENE 0 0 1 1 1 2 2 0 0 0 0 0 7 E 0 0 0 4 1 3 1 0 0 0 0 0 9 ESE 0 0 1 1 3 8 16 0 0 0 0 0 29 SE 0 0 0 0 3 14 25 1 0 0 0 0 43 SSE 0 0 2 0 3 11 4 0 0 0 0 0 20 S 0 0 0 2 6 21 9 0 0 0 0 0 38 SSW 0 -0 0 4 4 6 4 0 0 0 0 0 18 SW 0 0 0 1 1 5 1 0 0 0 0 0 8 WSW 0 0 0 0 2 4 0 0 0 0 0 0 6 W 0 0 0 0 1 4 2 0 0 0 0 0 7 WNW 0 0 1 0 0 1 1 0 0 0 0 0 3 MW 0 0 0 0 1 7 5 0 0 0 0 0 13 NNW 0 1 0 1 2 1 4 0 0 0 0 0 9 TOTAL 0 2 5 18 29 94 95 1 0 0 0 0 244 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 244 TOTAL HOURS FOR THE PERIOD: 244 STABILITY CLASS G FROM 4/01/08 0:00 TO 6/30/08 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 2 2 1 1 2 5 0 0 0 0 0 14 NNE 1 0 0 0 3 4 1 0 0 0 0 0 9 NE 0 0 0 0 1 3 6 0 0 0 0 0 10 ENE 0 0 0 7 2 6 3 0 0 0 0 0 18 E 0 0 0 2 4 4 0 0 0 0 0 0 10 ESE 0 0 0 3 5 4 6 0 0 0 0 0 18 SE 0 0 0 1 2 7 4 0 0 0 0 0 14 SSE 0 0 2 0 5 7 5 0 0 0 0 0 19 S 0 0 2 4 8 11 4 0 0 0 0 0 29 SSW 1 0 1 3 3 7 2 0 0 0 0 0 17 SW 1 0 0 1 3 14 1 0 0 0 0 0 20 WSW 0 1 1 1 5 4 1 0 0 0 0 0 13 W 1 1 0 2 4 9 0 0 0 0 0 0 17 WNW 0 0 1 2 3 10 4 0 0 0 0 0 20 NW 0 0 0 0 2 10 10 0 0 0 0 0 22 NNW 0 0 0 1 1 1 5 0 0 0 0 0 8 TOTAL 5 4 9 28 52 103 57 0 0 0 0 0 258 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 258 TOTAL HOURS FOR THE PERIOD: 258 57

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009

RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 7/01/08 0:00 TO 9/30/08 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 4 8 12 41 70 1 0 0 0 0 138 NNE 0 1 5 11 19 61 69 3 0 0 0 0 169 NM 0 1 3 6 15 57 94 6 2 4 1 0 189 ENE 2 0 3 11 18 39 61 6 2 0 0 1 143 5 0 2 2 20 28 18 13 7 0 0 0 2 92 ESE 0 3 3 9 20 30 40 15 0 0 2 0 122 S8 0 0 8 12 19 31 16 2 4 1 1 0 94 SSE 0 2 2 8 18 22 12 4 9 0 0 0 77 S 1 3 3 15 19 45 25 7 0 0 0 0 118 SSW 0 3 2 12 16 60 29 3 1 0 0 0 126 SW 0 0 2 6 14 50 15 3 0 0 0 0 90 WSW 1 1 3 14 28 56 24 1 1 0 0 0 129 W 0 1 2 11 20 73 42 3 2 0 0 0 154 WNW 0 1 3 4 11 39 36, 4 2 0 0 0 100 NW 0 1 3 7 8 38 8 5 0' 0 0 0 70 NNW 1 2 3 5 9 24 22 0 0 0 0 0 66 TOTAL 6 22 51 159 274 684 576 70 23 5 4 3 1877 NUMBER OF CALMS: 1 NUMBER OF INVALID HOURS: 330 NUMBER OF VALID HOURS: 1878 TOTAL HOURS FOR THE PERIOD: 2208 STABILITY CLASS A FROM 7/01/08 0:00 TO 9/30/08 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 7 2 0 0 0 0 0 9 NNE 0 0 0 0 0 4 11 0 0 0 0 0 15 NE 0 0 0 0 0 7 17 1 0 0 0 0 25 ENS 0 0 0 0 0 1 21 5 0 0 0 0 27 t 0 0 0 0 0 1 6 3 0 0 0 0 10 ESE 0 0 0 0 0 1 1 2 0 0 0 0 4 SS 0 0 0 0 0 1 1 0 0 0 "0 0 2 SSE 0 0 0 0 0 0 1 0 0 0 0 0 1 s 0 0 0 0 0 1 3 2 0 0 0 0 6 SSW 0 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 2 0 0 0 0 0 2 W 0 0 0 0 0 0 1 0 0. 0 0 0 1 WNW 0 0 0 0 0 0 2 0 0 0 0 0 2 NW 0 0 0 0 0 2 3 0 0 0 0 0 5 NNW 0 0 0 0 0 0 6 0 0 0 0 0 6 TOTAL 0 0 0 0 0 25 77 13 0 0 0 0 115 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 115 TOTAL HOURS FOR THE PERIOD: 115 58

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 7/01/08 0:00 TO 9/30/08 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 4 0 0 0 0 0 8 NNE 0 0 0 0 1 3 4 0 0 0 0 0 8 NE 0 0 0 0 0 5 3 0 0 0 0 0 8 ENE 0 0 0 0 0 1 2 0 0 0 0 0 3 E 0 0 0 2 0 1 0 0 0 0 0 0 3 ESE 0 0 0 0 1 0 0 1 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 0 0 0 0 0 0 0 S 0 0 0 0 0 0 3 0 0 0 0 0 3 SSW 0 0 0 0 0 2 2 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 1 1 2 0 0 0 0 0 4 W 0 0 0 0 0 1 3 0 0 0 0 0 4 WNW 0 0 0 0 0 0 3 1 0 0 0 0 4 NW 0 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 2 1 0 0 0 0 0 3 TOTAL 0 0 0 2 3 23 27 2 0 0 0 0 57 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 57 TOTAL HOURS FOR THE PERIOD: 57 STABILITY CLASS C FROM 7/01/08 0:00 TO 9/30/08 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 0 0 0 0. 0 6 NNE 0 0 0 1 2 0 5 0 0 0 0 0 8 NE 0 0 0 1 0 1 3 0 0 0 0 0 5 ENE 0 0 0 0 2 1 1 0 0 0 0 0 4 E 0 0 0 1 0 0 1 0 0 0 0 0 2 ESE 0 0 0 0 0 0 1 0 0 0 0 0 1 SE 0 0 0 0 0 0 1 0 0 0 0 0 1 SSE 0 0 0 0 1 0 1 1 0 0 0 0 3 S 0 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 1 1 2 1 0 0 0 0 0 5 SW 0 0 0 0 0 0 1 0 0 0 0 0 1 WSW 0 0 0 0 0 5 4 0 0 0 0 0 9 W 0 0 0 0 1 3 6 0 0 0 0 0 10 WNW 0 0 0 0 0 3 3 0 0 0 0 0 6 NW 0 0 0 0 0 1 1 0 0 0 0 0 2 NNW 0 0 0 0 1 0 1 0 0 0 0 0 2 TOTAL 0 0 0 4 8 17 35 1 0 0 0 0 65 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALIDHOURS: 65 TOTAL HOURS FOR THE PERIOD: 65 59

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 7/01/08 0:00 TO 9/30/08 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 3 5 12 10 1 0 0 0 0 32 NNE 0 1 1 4 5 16 15 0 0 0 0 0 42 NE 0 0 3 2 5 12 14 0 0 0 1 0 37 ENE 0 0 0 4 4 6 9 1 0 0 0 1 25 E 0 0 0 2 5 1 4 1 0 0 0 2 15 ESE 0 0 1 1___ 4 5 6 7 0 0 1 0 25 SE 0 0 0 6 4 5 6 1 3 0 0 0 25 SSE 0 0 0 3 5 7 5 1 4 0 0 0 25 S 1 0 2 4 8 18 11 3 0 0 0 0 47 SSW 0 0 0 3 6 15 17 3 1 0 0 0 45 SW 0 0 1 4 7 25 6 1 0 0 0 0 44 WSW 0 0 1 6 14 21 14 1 0 0 0 0 57 W 0 0 1 3 14 37 23 0 0 0 0 0 78 WNW 0 1 0 2 7 20 16 0 0 0 0 0 46 NW 0 0 0 2 6 15 1 0 0 0 0 0 24 NNW 0 0 0 1 5 15 4 0 0 0 0 0 25 TOTAL 1 2 11 50 104 230 161 20 8 0 2 3 592 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 592 TOTAL HOURS FOR THE PERIOD: 592 STABILITY CLASS E FROM 7/01/08 0:00 TO 9/30/08 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 1 1 2 4 9 0 0 0 0 0 18 NNE 0 0 3 3 6 10 13 2 0 0 0 0 37 NE 0 1 0 2 6 14 31 5 2 4 0 0 65 ENE 1 0 2 4 6 17 21 0 1 0 0 0 52 E 0 2 1 8 10 5 1 3 0 0 0 0 30 ESE 0 2 0 3 6 9 20 4 0 0 1 0 45 SE 0 0 2 3 11 12 3 1 1 1 1 0 35 SSE 0 2 0 4 8 7 4 2 5 0 0 0 32 S 0 1 0 5 4 11 8 2 0 0 0 0 31 SSW 0 1 0 2 4 23 9 0 0 0 0 0 39 SW 0 0 0 1 1 11 6 2 0 0 0 0 21 WSW 1 1 0 5 6 15 2 0 1 0 0. 0 31 W 0 1 1 1 2 22 7 2 2 0 0 0 38 WNW 0 0 0 0 2 9 10 3 2 0 0 0 26 NW 0 0 1 3 0 8 1 5 0 0 0 "0 18 NNW 1 2 2 0 0 1 6 0 0 0 0 0 12 TOTAL 4 13 13 45 74 178 151 31 14 5 2 0 530 NUMBER OF CALMS: 1 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 531 TOTAL HOURS FOR THE PERIOD: 531 60

River Bend Station 2008 Regulatory Guide 1.21 '4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 7/01/08 0:00 TO 9/30/08 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 3 3 2 16 0 0 0 0 0 25 NNE 0 0 0 2 3 12 13 1 0 0 0 0 31 NE 0 0 0 1 2 9 14 0 0 0 0 0 26 ENE 0 0 0 1 5 6 5 0 1 0 0 0 18 E 0 0 1 5 7 6 0 0 0 0 0 0 19 ESE 0 0 0 3 6 11 11 1 0 0 0 0 32 SE 0 0 2 0 3 7 3 0 0 0 *0 0 15 SSE 0 0 1 0 2 3 1 0 0 0 0 0 7 S 0 1 1 3 3 11 0 0 0 0 0 0 19 SSW 0 1 1 1 4 9 0 0 0 0 0 0 16 SW 0 0 1 0 1 5 1 0 0 0 0 0 8 WSW 0 0 0 0 1 10 0 0 0 0 0 0 11 W 0. 0 0 2 2 4 0 1 0 0 0 0 9 WNW 0 0 1 2 0 4 0 0 0 0 0 0 7 NW 0 0 0 1 2 5 0 0 0 0 0 0 8 NNW 0 0 0 4 1 0 0 0 0 0 0 0 5 TOTAL 0 2 9 28 45 104 64 3 1 0 0 0 256 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 256 TOTAL HOURS FOR THE PERIOD: 256 STABILITY CLASS G FROM 7/01/08 0:00 TO 9/30/08 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 1 1 2 11 24 0 0 0 0 0 40 NNE 0 0 1 1 2 16 8 0 0 0 0 0 28 NE 0 0 0 0 2 9 12 0 0 0 0 0 23 ENE 1 0 1 2 1 7 2 0 0 0 0 0 14 E 0 0 0 2 6 4 1 0 0 0 0 0 13 ESE 0 1 2 2 3 4 1 0 0 0 0 0 13 SE 0 0 4 3 1 6 2 0 0 0 0 0 16 SSE 0 0 1 1 2 5 0 0 0 0 0 0 9 S 0 1 0 3 4 4 0 0 0 0 0 0 12 SSW 0 1 1 5 1 9 0 0 0 0 0 0 17 SW 0 0 0 1 5 6 1 0 0 0 0 0 13.

WSW 0 0 2 3 6 4 0 0 0 0 0 0 15 W 0 0 0 5 1 6 2 0 0 0 0 0 14 WNW 0 0 2 0 2 3 2 0 0 0 0 0 9 NW 0 1 2 1 0 7 2 0 0 0 0 0 13 NNW 0 0 1 0 2 6 4 0 0 0 0 0 13 TOTAL 1 5 18 30 40 107 61 0 0 0 0 0 262 NUMBER OF CALMS: 0 NUMBER OF INVALID. HOURS: 0 NUMBER OF VALID HOURS: 262 TOTAL HOURS FOR THE PERIOD: 262 61

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE ALL STABILITY CLASSES FROM 10/01/08 0:00 TO 12/31/08 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 1 3 11 56 92 18 1 0 0 0 183 NNE 0 1 2 7 21 63 93 16 2 0 0 0 205 NE 1 1 0 7 8 38 81 9 0 0 0 0 145 ENE 0 3 1 9 15 52 79 32 0 0 0 0 191 E 1 1 3 15 17 52 34 16 4 0 0 0 143 ESE 1 1 2 6 8 45 178 53 5 0 0 0 299 SE 1 1 3 4 6 40 96 21 2 0 0 0 174 SSE 0 1 1 1 9 24 44 31 7 0 0 0 118 S 0 0 1 4 11 39 32 9 7 0 0 0 103 SSW 1 0 2 3 7 30 33 2 0 0 0 0 78 SW 0 1 1 6 2 18 20 1 1 0 0 0 50 WSW 1 0 2 4 15 34 11 0 0 0 0 0 67 W 1 0 3 3 4 37 20 2 1 0 0 0 71 WNW 0 2 0 5 12 19 31 10 "3 0 0 0 82 NW 0 0 1 8 11 40 58 18 2 0 0 0 138 NNW 1 2 1 6 11 43 65 15 1 0 0 0 145 TOTAL 8 15 24 91 168 630 967 253 36 0 0 0 2192 NUMBER OF CALMS: 2 NUMBER OF INVALID HOURS: 14 NUMBER OF VALID HOURS: 2194 TOTAL HOURS FOR THE PERIOD: 2208 STABILITY CLASS A FROM 10/01/08 0:00 TO 12/31/08 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 22 3 0 0 0 0 29 NNE 0 0 0 1 2 10 18 6 1 0 0 0 38 NE 0 0 0 0 2 12 18 3 0 0 0 0 35 ENE 0 0 0 0 0 10 12 3 0 0 0 0 25 E 0 0 0 0 1 7 10 0 0 0 0 0 18 ESE 0 0 0 0 0 13 33 12 2 0 0 0 60 SE 0 1 0 0 1 12 19 2 1 0 0 0 36 SSE 0 0 0 0 2 1 8 10 2 0 0 0 23 S 0 0 0 0 1 3 8 1 1 0 0 0 14 SSW 0 0 0 0 2 2 3 1 0 0 0 0 8 SW 0 0 0 0 0 1 1 0 0 0 0 0 2 WSW 0 0 0 0 2 10 4 0 0 0 0 0 16 W 0 0 0 1 0 5 8 2 1 0 0 0 17 WNW 0 0 0 0 0 0 9 3 1. 0 0 0 13 NW 0 0 0 0 0 3 10 5 2 0 0 0 20 NNW 0 0 0 0 0 3 15 3 0 0 0 0 21 TOTAL 0 1 0 2 13 96 198 54 11 0 0 0 375 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 375 TOTAL HOURS FOR THE PERIOD: 375 62

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS B FROM 10/01/08 0:00 TO 12/31/08 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 5 7 2 0 0 0 0 17 NNE 0 0 0 0 2 4 1 4 0 0 0 0 11 NE 0 0 0 0 1 3 0 0 0 0 0 0 4 ENE 0 0 0 2 3 0 1 0 0 0 0 0 6 E 0 0 0 1 2 2 0 0 0 0 0 0 5 ESE 0 1 0 1 2 1 3 0 0 0 0 0 8 SE 0 0 0 0 1 1 2 0 0 0 0 0 4 SSE 0 0 0 0 0 3 2 3 1 0 0 0 9 S 0 0 0 1 1 3 2 0 0 0 0 0 7 SSW 0 0 0 0 1 0 2 0 0 0 0 0 3 SW 0 0 0 1 0 0 2 0 1 0 0 0 4 WSW 0 0 0 0 0 5 1 0 0 0 0 0 6 W 0 0 0 0 0 3 0 0 0 0 0 J0 3 WNW 0 0 0 0 1 1 1 1 1 0 0 0 5 NW 0 0 0 0 0 1 1 2 0 0 0 0 4 NNW 0 0 0 0 1 0 3 2 0 0 0 0 6 TOTAL 0 1 0 6 18 32 28 14 3 0 0 0 102 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 102 TOTAL HOURS FOR THE PERIOD: 102 STABILITY CLASS C FROM 10/01/08 0:00 TO 12/31/08 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 4 8 2 0 0 0 0 16 NNE 0 0 0 0 3 7 4 2 0 0 0 0 16 NE 0 0 0 0 1 1 2 0 0 0 0 0 4 ENE 0 0 0 1 1 2 1 1 0 0 0 0 6 E 0 0 0 3 1 1 0 0 0 0 0 0 5 ESE 0 0 0 0 0 1 5 3 1 0 0 0 10 SE 0 0 0 1 0 3 2 1 0 0 0 0 7 SSE 0 0 0 0 1 2 3 2 0 0 0 0 8 S 0 0 0 0 0 3 1 3 1 0 0 0 8 SSW 0 0 0 0 0 3 2 0 0 0 0 0 5 SW 0 0 0 0 0 2 2 0 0 0 0 0 4 WSW 0 0 0 1 1 1 1 0 0 0 0 0 4 W 0 0 0 0 0 5 0 0 0 0 0 0 5 WNW 0 0 0 0 2 0 2 1 0 0 0 0 5 NW 0 0 0 1 2 4 6 1 0 0 0 0 14 NNW 0 0 0 0 1 5 2 1 0 0 0 0 9 TOTAL 0 0' 0 8 14 44 41 17 2 0 0 0 126 NUMBER OF CALMS: 0 NUMBER OF ,INVALID HOURS: 0 NUMBER OF VALID HOURS: 126 TOTAL HOURS FOR THE PERIOD: 126 63

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS D FROM 10/01/08 0:00 TO 12/31/08 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 19 22 11 1 0 0 0 59 NNE 0 0 0 4 10 16 46 4 1 0 0 0 81 NE 1 0 0 2 2 4 12 1 0 0 0 0 22 ENE 0 2 0 1 3 9 29 13 0 0 0 0 57 E 0 0 2 2 1 3 6 7 4 0 0 0 25 ESE 0 0 0 1 0 7 60 22 1 0 0 0 91 SE 0 0 1 2 0 10 34 16 1 0 0 0 64 SSE 0 0 0 1 2 8 25 16 4 0 0 0 56 S 0 0 1 1 3 9 16 5 5 0 0 0 40 SSW 0 0 0 1 3 19 22 1 0 0 0 0 46 SW 0 1 0 2 1 6 10 1 0 0 0 0 21 WSW 0 0 0 0 6 9 4 0 0 0 0 0 19 W 1 0 0 0 1 4 3 0 0 0 0 0 9 WNW 0 0 0 0 3 7 12 5 1 0 0 0 28 NW 0 0 1 1 4 7 24 9 0 0 0 0 46 NNW 0 0 1 3 5 15 19 9 1 0 0 0 53 TOTAL 2 3 6 23 48 152 344 120 19 0 0 0 717 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 717 TOTAL HOURS FOR THE PERIOD: 717 STABILITY CLASS E FROM 10/01/08 0:00 TO 12/31/08 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 13 0 0 0 0 0 19 NNE 0 0 1 0 2 13 11 0 0 0 0 0 27 NE 0 0 0 0 0 6 14 1 0 0 0 0 21 ENE 0 0 0 0 2 6 19 11 0 0 0 0 38 E 0 0 0 0 1 3 7 6 0 0 0 0 17 ESE 0 0 1 1 1 8 43 12 0 0 0 0 66 SE 0 0 1 0 0 5 27 2 0 0 0 0 35 SSE 0 1 0 0 3 3 6 0 0 0 0 0 13 S 0 0 0 0 1 6 4 0 0 0 0 0 11 SSW 0 0 1 0 0 2 2 0 0 0 0 0 5 SW 0 0 0 1 0 5 4 0 0 0 0 0 10 WSW 0 0 1 1 1 5 0 0 0 0 0 0 8 W 0 0 1 0 1 2 5 0 0 0 0 0 9 WNW 0 1 0 1 1 3 4 0 0 0 0 0 10 NW 0 0 0 0 1 4 4 1 0 0 0 0 10 NNW 0 0 0 1 1 2 15 0 0 0 0 0 19 TOTAL 0 2 6 5 16 78 178 33 0 0 0 0 318 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 318 TOTAL HOURS FOR THE PERIOD: 318 64

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 RIVER BEND STATION JOINT FREQUENCY TABLE STABILITY CLASS F FROM 10/01/08 0:00 TO 12/31/08 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 6 13 0 0 0 0 0 19 NNE 0 0 0 0 0 3 9 0 0 0 0 0 12 NE 0 0 0 1 2 1. 13 4 0 0 0 0 21 ENE 0 0 0 1 2 5 4 4 0 0 0 0 16 E 0 0 0 2 2 6 6 2 0 0 0 "0 18 ESE 0 0 1 0 0 5 18 2 1 0 0 0 27 SE 0 0 0 0 0 3 3 0 0 0 0 0 6 SSE 0 0 0 0 0 1 0 0 0 0 0 0 1 S 0 0 0 1 2 2 0 0 0 0 0 0 5 SSW 0 0 0 0 0 2 1 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 1 1 0 0 0 0 0 0 2 W 0 0 0 0 0 1 3 0 0 0 0 0 4 WNW 0 1 0 1 1 0 0 0 0 0 0 0 3 NW 0 0 0 0 3 8 4 0 0 0 0 0 15 NNW 0 0 0 0 1 4 4 0 0 0 0 0 9 TOTAL 0 1 1 6 14 48 78 12 1 0 0 0 161 NUMBER OF CALMS: 0 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 161 TOTAL HOURS FOR THE PERIOD: 161 STABILITY CLASS G FROM 10/01/08 0:00 TO 12/31/08 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 1 0 2 13 7 0 0 0 0 0 24 NNE 0 1 1 2 2 10 4 0 0 0 0 0 20 NE 0 1 0 4 0 11 22 0 0 0 0 0 38 ENE 0 1 1 4 4 20 13 0 0 0 0 0 .43 E 1 1 1 7 9 30 5 1 0 0 0 0 55 ESE 1 0 0 3 5 10 16 2 0 0 0 0 37 SE 1 0 1 1 4 6 9 0 0 0 0 0 22 SSE .0 0 1 0 1 6 0 0 0 0 0 0 8 S 0 0 0 1 3 13 1 0 0 0 0 0 18 SSW 1 0 1 2 1 2 1 0 0 0 0 0 8 SW 0 0 1 2 1 4 1 0 0 0 0 0 9 WSW 1 0 1 2 4 3 1 0 0 0 0 0 12 W 0 0 2 2 2 17 1 0 0 0 0 0 24 WNW 0 0 0 3 4 8 3 0 0 0 0 0 18 NW 0 0 0 6 1 13 9 0 0 0 0 0 29 NNW 1 2 0 2 2 14 7 0 0 0 0 0 28 TOTAL .6 7 11 41 45 180 100 3 0 0 0 0 393 NUMBER OF CALMS: 2 NUMBER OF INVALID HOURS: 0 NUMBER OF VALID HOURS: 395 TOTAL HOURS FOR THE PERIOD: 395 65

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 7 Effluent and Waste Disposal Annual Report 2008 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 m WNW (Containment) ClH/Q - 421.0 CHII/Q - 33.1 Beta Air Dose Maximum Receptor (4) 994 m WNW CHI/Q - 421.0 CHI/Q - 33.1 Resident D/Q - 50.3 D/Q - 18.0 Garden Meat animal Immersion Milk animal (5) 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 D/Q - 529.7 D/Q - 46.9 275 m N 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: 7 3 (1) All CHI/Q = 10- sec/m (2) All D/Q = 10-9 m-2 '

(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.

66

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 8 GROUND MONITORING WELL SAMPLES (H-3) - RBS LLD (pCi/I) 3000 LAB ID LOCATION DATE TRITIUM 20080185 EB-1 1/29/2008 < 560 20080190 MW-05 1/29/2008 < 486 20080191 EB-2 1/29/2008 < 560 20080192 MW-08 1/29/2008 < 561 20080193 EB-3 1/29/2008 < 554 20080194 MW-02 1/29/2008 < 559 20080195 MW-02 dup 1/29/2008 < 578 20080196 EB-4 1/29/2008 < 575 20080197 MW-10 1/29/2008 < 565 20080198 EB-5 1/29/2008 < 566 20080199 MW-09 1/29/2008 < 545 20080200 EB-6 1/29/2008 < 566 20080201 MW-07 1/29/2008 < 574 20080202 EB-7 1/29/2008 < 560 20080576 EB-1 5/14/2008 < 568 20080577 MW-08 5/14/2008 < 576 20080578 EB-02 5/14/2008 < 570 20080579 MW-05 5/14/2008 < 599 20080580 EB-3 5/14/2008 < 566 20080581 MW-02 5/14/2008 < 584 20080582 EB-4 5/14/2008 < 576 20080583 MW-10 5/14/2008 < 609 20080584 EB-05 5/14/2008 < 618 20080585 MW-9 5/14/2008 < 588 20080586 EB-06 5/14/2008 < 569 20080587 MW-07 5/14/2008 < 572 20080588 MW-07D 5/14/2008 < 595 20080589 EB-7 5/14/2008 < 566 20080905 EB-01 8/6/2008, < 565 20080906 MW-05 8/6/2008 < 569 67

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 8 (continued)

GROUND MONITORING WELL SAMPLES (H-3) - RBS LLD (pCi/I) 3000 LAB ID LOCATION DATE TRITIUM

-20080907 EB-02 8/6/2008 < 581 20080908 MW-08 8/6/2008 < 578 20080909 EB-03 8/6/2008 < 567 20080910 MW-02 8/6/2008 < 577 20080911 MW-02D 8/6/2008 < 581 20080912 EB-04 8/6/2008 < 584 20080913 MW-10 8/6/2008 < 584 20080914 EB-05 8/6/2008 < 567 20080915 MW-09 8/6/2008 < 578 20080916 EB-06 8/6/2008 < 566 20080917 MW-07 8/6/2008 < 565 20080918 EB-07 8/6/2008 < 565 20081324 EB-1 11/19/2008 < 560 20081325 MW-20 11/19/2008 < 568 20081326 EB-2 11/19/2008 < 567 20081327 MW-19 11/19/2008 < 565 20081328 EB-3 11/19/2008 < 566 20081329 MW-03 11/19/2008 < 565 20081330 EB-4 11/19/2008 < 561 20081331 MW-17 11/19/2008 < 563 20081332 MW-17D 11/19/2008 < 562 20081333 EB-5 11/19/2008 < 575 20081334 MW-li 11/19/2008 < 569 EB-6 11/19/2008 <,564 20081335 20081336 MW-15 11/19/2008 < 571 20081337 EB-7 11./19/2008 < 565 20081338 MW-08 11/20/2008 < 562 20081339 EB-8 11/19/2008 < 560 20081340 MW-05 11/19/2008 < 560 20081341 EB-9 11/19/2008 < 563 68

River Bend Station 20108 Regulatory Guide 1.21 4/28/2009 Table 8 (continued)

GROUND MONITORING WELL SAMPLES (H-3) - RBS LLD (pCi/I) 3000 LAB ID LOCATION DATE TRITIUM 20081342 MW-02 11/20/2008 < 562 20081343 eb-10 11/20/2008

560 20081344 MW-10 11/20/2008 < 577 20081.345 EB-11 11/20/2008 < 561 20081346 MW-09 11/20/2008 < 564 20081347 EB-12 11/20/2008 < 559 20081348 MW-07 11/20/2008 < 571 20081349 EB-13 11/20/2008 < 565 20081350 MW-02 D 11/20/2008 < 584 MW - Monitoring Well EB - Equipment Blank D- Duplicate DUP - Duplicat 69

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 8 (Continued)

GROUND MONTORING WELL SAMPLES (GAMMA) - RBS LLD (pCi/I) 15 15 30 15 30 15 30 15 - 15 18 60 15 LAB ID LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20080185 EB-1 /29/2008 < 10.16 < 10.82 < 16.22 < 10.12 < 18.23' < 10.88 < 13.11

9.57 < 10.35 < 9.03 < 34.21 < 14.32 20080190 MW-05 /29/2008 < 12.89 < 9.73 < 17.39 < 10.24 < 18.22 < 11.64 < 12.83 < 9.02 < 11.27 < 10.97 < 36.65 < 14.94 20080191 EB-2 /29/2008 < 11.45 - < 12.22 < 19.68 < 11.24 < 20.01 <. 12.73 < 13.43 < 10.39 < 12.08 < 11.86 < 43.57 < 14.61 20080192 MW-08 /29/2008 < 11.81 < 11.03 < 17.91 < 11.72 < 28.76 < 11.45 < 11.06 < 10.80 < 12.04 < 12.94 < 29.51 < 13.20 20080193 EB-3 /29/2008 < 9.80 < 8.37 < 17.23 < 8.44 < 24.61 < 9.75 < 17.69 < 9.29 < 10.03 < 8.59 < 33.15 < 11.61 20080194 MW-02 /29/2008 < 14.85 < 11.97 < 21.27 < 9.95 < 16.76 < 12.64 < 16.54 < 11.15 < 11.90 < 9.74 < 39.49 < 6.46 20(180195 MW-02 dup /29/2008 < 12.26 < 8.27 < 20.77 < 12.28 < 28.07 < 14.31 < 26.40 < 13.50 < 13.57 < 16.51 < 47.38 < 12.05 20080196 EB-4 /29/2008 < 8.96 < 6.73 < 19.62 < 11.16 < 24.23 < 10.95 < 13.45 < 10.55 < 10.11 < 11.13 < 36.34 < 13.22 20080197 MW-10 /29/2008 < 9.70 < 9.28 < 21.42 < 9.43 < 25.96 < 14.55 < 19.94 < 11.37 < 10.93 < 9.80 < 36.10 < 11.23 20080198 EB-5 [/29/2008 < 11.44 < 8.58 < 19.13 < 9.27 < 13.04 < 11.25 < 18.27 < 9.39 < 13.00 < 11.62 < 39.01 < 10.72" 20080199 MW-09 [/29/20(08 < 5.43 < 11.94 < 26.06 < 11.16 < 23.09 < 13.34 < 22.06 < 11.37 < 12.29 < 10.95 < 46.98 < 12.0(0 20080200 EB-6 [/29/2008 < 8.43 < 6.26 < 15.44 < 6.12 < 24.32 < 8.76 < 15.85 < 10.64 < 12.87 < 10.61 < 30.48 < 14.62 20080201 MW-07 1/29/2008 < 12.25 < 8.99 < 17.73 < 11.03 < 25.34 < 14.52 < 17.20 < 9.97 < 11.39 < 12.79 < 26.64 < 13.58 20080202 EB-7 1/29/2008 < 8.71 < 10.16 < 23.83 < 10.13 < 21.60 < 8.67 < 14.63 < 9.21 < 7.65 < 11.05 < 29.05 < 13.55 2(1080!576 EB-1 5/14/2008 < 14.36 < 11.87 < 20.94 < 13.41 < 23.19 < 12.46 < 14.26 < 7.68 < 11.53 < 10.19 < 36.75 < 9.99 70

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 8 (Continued)

GROUND MONTORING WELL SAMPLES (GAMMA) - RBS LLD (pCi/I) 15 15 30 15 30 15 30 15 15 18 60 15 LAB ID LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20080577 MW-08 5/14/2008 < 9.65 < 7.58 < 9.75 < 5.50 < 17.96 < 11.26 < 17.03 < 9.52 < 10.75 < 8.34 < 32.65 < 10.54 20080578 EB-02 5/14/2008 < 9.37 < 6.28 < 14.09 < 7.11 < 15.30 < 10.23 < 14.35 < 7.01 < 9.67 < 8.17 < 30.26 < 6.78 20080579 MW-05 5/14/2008 < 11.73 < 13.09 < 22.06 < 14.56 < 24.77 < 14.68 < 15.75 < 11.18 < 11.49 < 13.44 < 44.61 < 4.03 20080580 EB-3 5/14/2008 < 11.33 < 8.92 < 23.31 < 7.11 < 24.51 < 11.49 < 16.43 < 7.42 < 11.33 < 7.66 < 28.86 < 9.66 20080581 MW-02 5/14/2008 < 10.64 < 10.46 < 18.05 < 10.21 < 20.83 < 11.21 < 21.61 < 13.01 < 14.42 < 10.70 < 37.23 < 14.45 20080582 EB-4 5/14/2008 < 11.83 < 10.49 < 14.49 < 9.63 < 13.06 < 13.06 < 19.92 < 8.91 < 12.67 < 14.73 < 39.67 < 12.24 20080583 MW-10 5/14/2008 < 10.67 < 10.60 < 22.02 < 12.47 < 28.13 < 14.61 < 18.27 < 12.71 < 12.53 < 11.48 < 38.85 < 14.73 20080584 EB-05 5/14/2008 < 10.82 < 9.10 < 17.73 < 7.48 < 23.67 < 11.96 < 24.07 < 10.17 < 7.76 < 12.23 - < 35.56 < 14.92 20080585 MW-9 5/14/2008 < 11.83 < 7.72 < 19.88 < 7.15 <. 22.94 < 14.56 < 14.55 < 12.58 < 14.52 < 9.57 < 39.32 < 9.05 20080586 EB-06 5/14/2008 < 11.00 < 6.00 < 14.74 < 7.95 < 23.24 < 6.90 < 21.90 < 10.55 < 8.95 < 12.89 < 39.66 < 12.84 20080587 MW-07 5/14/2008 < 11.97 < 10.11 < 24.61 < 9.34 < 18.14 < 14.08 < 12.66 < 9.76 < 13.04 < 10.43 < 37.78 < 13.96 20080588 MW-07D 5/14/2008 < 10.10 < 14.26 < 21.09 < 7.89 < 18.22 < 12.75 < 17.97' < 10.77 < 11.73 < 10.19 < 41.74 < 14.90 20080589 EB-7 5/14/2008 < 10.42 < 11.48 < 13.94 < 6.44 < 19.25 < 10.37 < 14.63 < 11.17 < 10.02 < 9.11 < 33.95 < 11.10 20080905 EB-01 8/6/2008 < 14.96 < 8.22 < 14.59 < 9.65 < 26.76 < 9.84 < 23.57 < 12.66 < 12.22 < 11.85 < 41.42 < 12.75 20080906 MW-05 8/6/2008 < 10.76 < 9.50 < 18.15 < 8.81 < 18.44 < 8.40 < 14.67 < 8.71 < 8.79 < 8.72 < 33.72 < 14.18 71

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 8 (Continued)

GROUND MONTORING WELL SAMPLES (GAMMA) - RBS LLD (pCi/I) 15 15 30 15 30 15 30 15. 15 18 60 15 LAB ID LOCATION DATE MN-54 C0-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20080907 EB-02 8/6/2008 < 8.61 < 12.54 < 16.17 < 12.01 < 12.15 < 10.44 < 16.06 < 10.57 < 9.26 < 8.43 < 40.59 < 13.79 20080908 MW-08 8/6/2008 < 11.85 < 9.46 < 17.41 < 9.14 < 18.00 < 10.58 < 13.50 < 8.49 < 10.73 < 8.59 < 26.91 < 12.03 20080909 EB-03 8/6/2008 < 10.28 < 9.63 < 13.15 < 10.48 < 22.78 < 13.13 < 16.42 < 11.21 < 12.98 < 12.00 < 39.83 < 13.81 20080910 MW-02 8/6/2008 < 9.78 < 9.30 < 24.99 < 8.18 < 2(0.34 < 12.55 < 17.17 < 10.29 < 12.24 < 9.08 < 34.58 < 9.64 20080911 MW-02D 8/6/2008 < 10.82 < 13.33 < 23.07 < 14.19 < 22.45 < 14.26 < 20.56 < 13.11 < 12.12 < 9.80 < 31.95 < 12.21 20080912 EB-04 8/6/2008 < 11.95 < 9.79 < 24.28 < 7.09 < 22.97 < 11.12 < 15.52 < 10.19 < 8.38 < 11.96 < 30.94 < 9.89 20080913 MW-10 8/6/2008 < 9.03 < 8.94 < 15.99 < 11.44 < 18.73 < 13.53 < 17.39 < 11.07 < 11.92 < 8.59 < 33.28 < 14.94 20080914 EB-05 8/6/2008 < 10.01 < 8.25 < 15.34 < 8.64 < 21.47 < 9.16 < 16.50 < 10.25 < 10.60 < 8.23 < 32.67 < 11.90 20080915 MW-09 8/6/2008 < 10.24 < 9.51 < 13.75 < 10.31 < 15.96 < 11.51 < 10.58 < 10.31 < 8.69 < 11.07 < 31.95 < 12.46 20080916 EB-06 8/6/2008 < 9.45 < 9.02 < 17.22 < 7.04 < 24.04 < 9.50 <20.32 < 10.36 < 10.18 < 11.76 < 40.37 < 10.98 20080917 MW-07 8/6/2008 < 10.76 < 10.90 < 21.17 < 12.46 < 25.88 < 12.43 < 11.81 < 9.92 < 12.14 < 10.83 < 40.06 < 14.58 20080918 EB-07 8/6/2008 < 8.97 < 9.03 < 19.43 < 8.98 < 17.24 < 11.58 < 16.69 < 9.27 < 10.26 < 9.46 < 28.33 < 10.22 20081324 EB-I 11/19/2008 < 9.48 < 6.39 < 19.36 < 8.09 < 21.90 < 10.26 < 13.09 < 8.33 < 9.80 < 11.49 < 32.71 < 13.54 20081325 MW-20 11/19/2008 < 8.83 < 1(0.75 < 9.45 < 11.12 < 2(0.42 < 11.28 < 18.48 < 10.16 < 7.91 < 7.81 < 31.87 < 14.93 20081326 EB-2 11/19/20(18 < 11.59 < 8.72 < 20.05 < 7.89 < 22.65 < 12.43 < 18.64 < 8.2(1 < 1(0.55 < 10.04 < 40.12 < 12.72 72

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 8 (Continued)

GROUND MONTORING WELL SAMPLES (GAMMA) - RBS LLD (pCi/I) 15 15 30 15 30 15 30 15 15 18 60 15 LAB ID LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137. BA-140 LA-140 20081327 MW-19 11/19/2008 < 9.99 < 8.74 < 13.33 < 5.81 < 19.65 < 9.00 < 11.82 < 9.80 < 8.13 < 8.03 < 30.04 < 7.92 20081328 EB-3 11/19/2008 < 10.11 < 9.08 < 16.37 < 8.79 < 19.38 < 9.92 < 20.04 < 9.99 < 10.92 < 10.67 < 27.49 < 13.63 20081329 MW-03 11/19/2008 < 9.58 < 10.55 < 19.11 < 7.86 < 24.65 < 11.45 < 11.02 < 13.49 < 11.25 < 12.62 < 41.44 < 12.39 20081330 EB-4 11/19/2008 < 8.01 < 9.32 < 24.53 < 6.44 < 13.83 < 11.90 < 11.49 < 12.63 < 7.40 . < 11.42 < 42.06 < 8.23 20081331 MW-17 11/19/2008 < 8.24 < 8.42 < 15.53 < 5.49 < 18.67 < 8:60 < 1(0.62 < 9.50 < 7.94 < 9.75 < 33.21 < 12.05 20081332 MW-17D 11/19/2008 < 10;26 < 9.46 < 14.58 < 7.66 < 22.12 < 9.92 < 14.18 < 11.77 < 9.95 < 9.43 < 44.34 < 14.71 20081333 EB-5 11/19/2008 < 7.49 < 9.20 < 14.63 < 9.35 < 18.04 < 8.06 < 18.84 < 14.16 < 7.49 < 9.51 < 42.12 < 13.09 20081334 MW-1I 11/19/2008 < 8.39 < 8.55 < 13.90 < 9.37 < 23.32 < 6.78 < 15.85 < 14.31 < 10.24 < 8.92 < 35.71 < 9.32 20081335 EB-6 11/19/2008 < 7.05 < 9.45 < 17.23 < 13.02 < 28.40 < 11.86 < 22.87 < 13.38 < 10.81 < 7.78 < 40.69 " < 14.14 20081336 MW-15 11/19/2008 < 9.98 < 7.56 < 20.99 < 9.71 < 21.72 < 14.13 < 16.58 < 14.83 < 9.14 < 10.25 < 31.05 < 13.01 20081337 EB-7 11/19/2008 < 11.34 < 10.54 < 12.03 < 11.05 < 20.04 < 11.24 < 17.49 < 10.75 < 10.58 < 7.35 < 37.01 < 14.53 20081338 MW-08 11/20/2008 < 7.17 < 7.11 < 18.13 < 10.20 < 19.26 < 13.39 < 16.51 < 12.97 < 10.53 < 11.32 < 47.11 < 12.88 20081339 EB-8 11/19/2008 < 9.82 < 9.45 < 23.03 < 8.72 < 18.98 < 12.29 < 15.25 < 13.28 < 11.03 < 12.75 < 38.42 < 14.86 20081340 MW-05 11/19/2008 < 9.78 < 5.76 < 18.86 < 8.32 < 14.21 < 10.75 < 12.21 < 11.29 < 10.98 < 10.25 < 40.24 < 12.73 20081341 EB-9 11/19/2008 < 10.36 < 10.89 < 12.63 < 7.70 < 27.07 < 11.97 < 18.32 < 14.13 < 9.59 < 8.63 < 44.89 < 14.40 73

River Bend Station 2008 Regulatory Guide 1.21 4/28/2009 Table 8 (Continued)

GROUND MONTORING WELL SAMPLES (GAMMA) - R"S LLD (pCi/I) 15 15 30 15 30 15 30 15 15 18 60 15 LAB ID LOCATION DATE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 20081342 MW-02 11/20/2008 < 7.61 < 11.44 < 17.39 < 7.87 < 20.84 < 13.50 < 26.02 < 14.46 < 12.44 < 13.50 < 31.76 < 11.81 20081343 eb-10 11/20/2008 < 9.75 < 9.88 < 18.44 < 11.53 < 21.31 < 14.18 < 18.96 < 13.09 < 9.12 < 10.02 < 36.37 < 13.97 20081344 MW-10 11/20/2008 < 9.76 < 10.72 < 21.55 < 9.05 < 19.17 < 7.36 < 14.66 < 14.24 < 9.54 < 11.62 < 39.34 < 12.87 20081345 EB-11 11/20/2008 < 9.87 < 10.09 < 10.08 < 8.13 < 20.47 < 8.46 < 22.10 < 13.43 < 11.40 < 10.03 < 39.53 < 14.08 20081346 MW-09 11/20/2008 < .8.95 < 8.83 < 19.32 < 9.20 < 12.58 < 10.28 < 11.34 < 11.60 < 8.48 < 9.87 < 33.06 < 8.63 2(1081347 EB-12 11/20/2008 < 11.36 < 8.26 < 22.45 < 10.35 < 22.39 < 11.96 < 15.56 < 10.66 < 10.44 < 1(0.44 < 40.37 - < 14.16 20081348 MW-07 11/20/2008 < 10.83 < 8.64 < 12.40 < 6.83 < 18.97 < 9.96 < 14.62 < 11.77 < 9.76 < 9.59 < 29.26 < 12.2(0 20081349 EB-13 11/20/2008 < 8.59 < 1(0.21 < 21.54 < 5.68 < 19.39 (< 7.79 < 14.31 < 13.00 < 11.49 < 10.58 < 37.32 < 14.89 20081350 MW-02 D 11/2(0/2008 < 4.77 < 8.34 < 18.36 < 5.26 < 17.79 < 8.93 < 14.05 < 11.34 < 10.18 < 9.06 < 35.31 < 13.66 MW - Monitoring Well EB - Equipment Blank D - Duplicate DUP - Duplicate 74

River Bend Station 2008 Regulatory Guide 1.21 4/28/20019 ATTACHMENT 1 75

[Procedure Contains NMM REFLIB Forms: YES LI NO 0 Effective Procedure Owner: Mark L. Carver Executive Sponsor: Kevin Walsh Date

Title:

Manager, Fleet Radwaste

Title:

_ VP - Operations 7/30/2008 Site: Echelon - HQN Site: Waterford 3 Exception Site Site Procedure Champion Title Date*

ANO David Moore RPM N/A BRP N/A N/A GGNS Roy Wilson RPM IPEC Dennis Loope RPM JAF John Solowski RPM PLP Chuck Sherman RPM PNPS Jack Priest RPM RBS Brad Houston RPM VY Sam Wender IV RPM W3 Blake Pilutti RPM N/A NP N/A N/A N/A HQN Mark L. Carver Manager, Fleet Radwaste Site and NMM Procedures Canceled or Superseded By This Revision Palisades Nuclear Plant, Process Control Program (PCP) - Rev. 11 Process Applicability Exclusion All Sites: []

Specific Sites: ANO E] BRP [] GGNS E] IPEC-] JAF [] PLP E] PNPS [] RBS [:] VY E] W3 LI NP E]

Changqe Statement a The revision to EN-RW-105 included a major re-write to provide updates to allow VTY, PLP and IPEC to be included as sites implementing this Process Control Program.

a The following are updates:

o Waste management practices section replaced dry and liquid waste management o Waste stream sampling methods and frequency section added o Waste classification section added o Quality Control section added, o Dewatering section added o Waste packaging section added o Miscellaneous section added for special tools/equipment &training requirements

Exception Dates to permit appropriate change management training and to facilitate outage schedules.

EN-RW-105, Rev. 1

TABLE OF CONTENTS Section Title Page 1-.o P UR PO S E .............................................................................. 3 2.0 R EFER EN C ES ........................................................................ 3 3.0 DE F INITIO NS .......................................................................... 5 4.0 R ESPO NSIBILITIES ................................................................ 9 5.0 DETAILS .................. ...................... 10 6.0 INTERFACES ................................................. 20 7.0 RECORDS ................................................ 20 8.0 OBLIGATION AND REGULATORY COMMITMENT CROSS-REFERENCES ......................................................... 21 9.0 ATTA C HMENTS .................................................................... 21 EN-RW-105, Rev. 1

1.0 PURPOSE The Process Control Program (PCP) requires formulas, sampling, analyses, test and determinations to be made to ensure that the processing and packing of solid radioactive wastes based on demonstrated processing of actual or simulated wet solid wastes will be accomplished in such a way as to assure compliance with 10 CFR Parts 20, 61 and 71, State Regulations, burial ground requirements, and other requirements governing the disposal of solid radioactive waste. The scope of a PCP 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. [GGNS UFSAR, Chapter 16B.1 / TRM - 7.6.3.8 paragraph 1]

1.1 The purpose of this document is to provide a description of the solid radioactive waste Process Control Program (PCP) at all the Entergy fleet sites. The PCP describes the methods used for processing, classification and packaging low-level wet radioactive waste into a form acceptable for interim on-site storage, shipping and disposal, in accordance with 10 CFR Part 61 and current disposal site criteria.

1.2 To ensure the safe operation of the solid radwaste system, the solid radwaste system will be used in accordance with this Process Control Program to process radioactive wastes to meet interim on-site storage, shipping and burial ground requirements.

1.3 This document addresses the process control program in the context of disposal criteria, on-site processing and vendor processing requirements.

1.4 The Process Control Program implements the requirements of 10CFR50.36a and General Design Criteria 60 of Appendix A to 10CFR Part 50. The process parameters included in the Process Control Program may include but are not limited to waste type, waste pH, waste/liquid/solidification agent/catalyst ratios, waste oil content, waste principal chemical constituents, and mixing and curing times.

1.5 This document does NOT address the requirements for 10CFR Part 61.56 (waste characteristics) for material sent to intermediate processors, because the final treatment and packaging is performed at the vendor facilities.

2.0 REFERENCES

[1] EN-QV-104, "Entergy Quality Assurance Program Manual Control"

[2] Title 49, Code of Federal Regulations

[3] Title 10, Code of Federal Regulations, Part 20

[4] Title 10, Code of Federal Regulations, Part 61

[5] Title 10, Code of Federal Regulations, Part 71, Appendix H [QAPM, Section A.1.c]

EN-RW-105, Rev. 1

2.0 continued

[6] Low-Level Waste Licensing Branch Technical Position on Radioactive Waste Classification, 11 May 1983

[7] Disposal Site Criteria and License

[8] Waste Processor Acceptance Criteria

[9] 'EN-LI- 00, "Process Applicability Determination"

[10] NRC Information and Enforcement Bulletins NRC Information Notice 79-19: Packaging of Low-Level Radioactive Waste for Transport and Burial.

NRC Information Notice 80-24: Low-Level Radioactive Waste Burial Criteria.

NRC Information Notice 80-32: Clarification of Certain Requirements for Exclusive-Use Shipments of Radioactive Materials.

NRC Information Notice 80-32, Rev. 1: Clarification of Certain Requirements for Exclusive-Use Shipments of Radioactive Materials.

NRC Information Notice 83-05: Obtaining Approval for Disposing of Very-Low-Level Radioactive Waste - 10CFR Section 20.302.

NRC Information Notice 83-10: Clarification of Several Aspects Relating to Use of NRC-Certified Transport Packages.

NRC Information Notice 83-33: Non-Representative Sampling of Contaminated Oil.

NRC Information Notice 84-50: Clarification of Scope of Quality Assurance Programs for Transport Packages Pursuant to 10CFR 50 Appendix B.

" NRC Information Notice 84-72: Clarification of Conditions for Waste Shipments Subject to Hydrogen Gas Generation.

" NRC Information Notice 85-92: Surveys of Wastes Before Disposal from Nuclear Reactor Facilities.

" NRC Information Notice 86-20: Low-Level Radioactive Waste Scaling Factors, 10CFR 61.

NRC Information Notice 86-90: Requests to Dispose of Very Low-Level Radioactive Waste Pursuant 10CFR 20.302

" NRC Information Notice 87-03: Segregation of Hazardous and Low-Level Radioactive Wastes NRC Information Notice 87-07: Quality Control of On-Site Dewatering/ Solidification Operations by Outside Contractors EN-RW-105, Rev. 1

2.0 continued

[11] NRC Information and Enforcement Bulletins (continued)

NRC Information Notice 89-27: Limitations on the Use of Waste Forms and High Integrity Containers for the Disposal of Low-Level Radioactive Waste

NRC Information Notice 92-62: Emergency Response Information Requirements for Radioactive Material Shipments 0 NRC Information Notice 92-72: Employee Training and Shipper Registration Requirements for Transporting Radioactive Materials 0 NRC Generic Letter 89-01, "Implementation of Programmatic Controls for Radiological Effluent Technical Specifications in the Administrative Controls Section of the Technical Specifications and the Relocation of Procedural Details of RETS to the Offsite Dose Calculation Manual or to the Process Control Program".

[12] Nureg-0800 Standard Review Plan Section 11.4 Revision 2, Solid Waste Management Systems.

[13] NRC Waste Form Technical Position, Revision 1 Jan 24 1991.

[14] NRC SECY 94-198 Review of Existing Guidance Concerning the Extended Storage of Low-Level Radioactive Waste.

[15] EPRI TR-1 06925 Rev-1, Interim On-Site Storage of Low Level Waste: Guidelines for Extended Storage - October1996

[16] NRC Branch Technical Position On Concentration Averaging And Encapsulation Jan 171995

[17] Commitment Documents (U-2 and U-3)

IPN-99-079, "Supplement to Proposed Changes to Technical Specifications Incorporating Recommendations of Generic Letter 89-01 and the Revised 10 CFR Part 20 and 10 CFR Part 50.36a.

Appendix B Technical Specifications, Section 4.5 [IP, RECS ODCM Part 1]

3.0 DEFINITIONS

[1] Batch - A quantity of waste to be processed having essentially consistent physical and chemical characteristics as determined through past experience or system operation knowledge by the Radwaste Shipping Specialist. A batch could be a waste tank, several waste tanks grouped together or a designated time period such as between outages as with the DAW waste stream. An isolated quantity of feed waste to be processed having essentially constant physical and chemical characteristics.

(The addition or removal of water will not be considered to create a new batch).

EN-RW-105, Rev. 1

3.0 continued

[2] Certificate of Compliance - Document issued by the USNRC regulating use of a NRC licensed cask or issued by (SCDHEC) South Carolina Department of Health and Environmental Conservation regulating a High Integrity Container.

[3] Chelating Agents - EDTA, DTPA, hydroxy-carboxylic acids, citric acid, carbolic acid and glucinic acid.

[4] Compaction - The process of volume reducing solid waste by applying external pressure.

[5] Confirmatory Analysis - The practice of verifying that gross radioactivity measurements using MCA are reasonably consistent with independent laboratory sample data.

[6] Dewatered Waste - Wet waste that has been processed by means other than solidification, encapsulation, or absorption to meet the free standing liquid requirements of 10CFR Part 61.56 (a)(3) and (b)(2).

[7] De-watering - The removal of water or liquid from a waste form, usually by gravity or pumping.

[8] Dilution Factor - The RADMAN computer code factor to account for the non-radioactive binder added to the waste stream in the final product when waste is solidified.

[9] Dry Waste - Radioactive waste which exist primarily in a non-liquid form and includes such items as dry materials, metals, resins, filter media and sludges.

[10] Encapsulation - Encapsulation is a means of providing stability for certain types of waste by surrounding the waste by an appropriate encapsulation media.

[11] Gamma-Spectral-Analysis - Also known as IG, MCA, Ge/Li and gamma spectroscopy.

[12] Gross Radioactivity Measurements - More commonly known as dose to curie conversion for packaged waste characterization and classification.

[13] Homogeneous - Of the same kind or nature; essentially alike. Most Volumetric waste streams are considered homogeneous for purposes of waste classification.

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

[15] Liguid 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 liquids. This waste is normally processed off-site.

EN-RW-105, Rev. 1

3.0 continued

[16] Low-Level Radioactive Waste (LLW) - Those wastes containing source, special nuclear, or by-product material that are acceptable for disposal in a land disposal facility. For the purposes of this definition, low-level radioactive waste has the same meaning as in the Low-Level Waste Policy Act, that is, radioactive waste not classified as high-level radioactive waste, transuranic waste, spent nuclear fuel, or by-product material as defined in section 11 e.(2) of the Atomic Energy Act (uranium or thorium tailings and waste).

[17] Measurement of Specific Radionuclides - More commonly known as direct sample or container sample using MCA data for packaged waste characterization and classification.

[18] Operable - A system, subsystem, train, component or device SHALL be OPERABLE or have OPERABILITY when it is capable of performing its specified functions(s), and when all necessary attendant instrumentation, controls, electrical power, cooling or seal water, lubrication or other auxiliary equipment that are required for the system, subsystem, train, component, or device to perform its function(s) are also capable of performing their related support function(s).

[19] Prequalification Program - The testing program implemented to demonstrate that the proposed method of wet waste processing will result in a waste form acceptable to the land disposal facility and theNRC.

[20] Processing - Changing, modifying, and/or packaging radioactive waste into a form that is acceptable to a disposal facility.

[21] Quality Assurance/Quality Control - As used in this document, "qualify assurance" comprises all those planned and systematic actions necessary to provide adequate confidence that a structure, system, or component will perform satisfactorily in service.

Quality assurance includes quality control, which comprises those quality assurance actions related to the physical characteristics of a material structure, component, or system to predetermined requirements.

[22] Reportable Quantity Radionuclides (RQ) - Any radionuclide listed in column (1) of Table 2 of 49CFR Part 172.101 which is present in quantities as listed in column (3) of Table 2 of 49CFR Part 172.101.

[23] Sampling Plan - A program to ensure that representative samples from the feed waste and the final waste form are obtained and tested for conformance with parameters stated in the PCP and waste form acceptance criteria.

[24] Scaling Factor - A dimensionless number which relates the concentration of an easy to measure radionuclide (gamma emitter) to one which is difficult to measure (beta and/or alpha emitters).

EN-RW-105, Rev. 1

3.0 continued

[25] Significant Quantity - For purposes of waste classification all the following radionuclide values SHALL be considered significant and must be reported on the disposal manifest.

Any value (real or LLD) for radionuclides listed in Appendix G to 10CFR20 (H-3, C-14, 1-129, Tc-99).

" Greater than or equal to 1 percent of the concentration limits as listed in 10CFR Part 61.55 Table 1.

Greater than or equal to 1 percent of the Class A concentration limits listed in 10CFR Part 61.55 Table 2.

Greater than or equal to 1 percent of the total activity.

Greater than or equal to 1 percent of the Reportable Quantity limits listed on 49CFR Part 172.101 Table 2.

[26] Solidification - The conversion of wet waste into a free-standing monolith by the addition of an agent so that the waste meets the stability and free-standing liquid requirements of the disposal site.

[27] Special Radionuclides - The RADMAN computer code term for radionuclides listed in Appendix G to 10CFR20 (i.e., H-3, C-14,1-129 & Tc-99)

[28] Stability - Structural stability per 10CFR61.2, Waste Form Technical Position, and Waste Form Technical Position Revision 1. This can be provided by the waste form, or by placing the waste in a disposal container or structure that provides stability after disposal. Stability requires that the waste form maintain its structural integrity under the expected disposal conditions.

[29] Training - A systematic program that ensures a person has knowledge of hazardous materials and hazardous materials regulations.

[30] Type A Package - Is the packaging together with its radioactive contents limited to Al or A2 as appropriate that meets the requirements of 49CFR Part 173.410 and Part 173.412, and is designed to retain the integrity of containment and shielding under normal conditions of transport as demonstrated by the tests set forth in 49CFR Part 173.465 or Part 173.466 as appropriate.

[31] Type B Package - Is the packaging together with its radioactive contents that is designed to retain the integrity of containment and shielding when subjected to the normal conditions of transport and hypothetical accident test conditions set forth in 10CFR Part 71.

EN-RW-105, Rev. 1

3.0 continued

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

[33] Waste Container - A vessel of any shape, size, arid composition used to contain the waste media.

[34] Waste Form - Waste in a waste container acceptable for disposal at a licensed disposal facility.

[35] Waste Stream - A Plant specific and constant source of waste with a distinct radionuclide content and distribution.

[36] Waste Type - A single packaging configuration and waste form tied to a specific waste stream.

4.0 RESPONSIBILITIES

[1] The Vice President Operations Support (VPOS) is responsible for the implementation of this procedure.

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

[3] The Low Level RadWaste (LLRW) Focus Group is responsible for evaluating and recommending changes and revisions to this procedure.

[4] Each site RP Department - Radwaste Supervisor / Specialist (title may vary at the site's respectively) has the overall responsibility for implementing the PCP and is responsible for processing and transportation is tasked with the day-to-day responsibilities for the following:

Implementing the requirements of this document.

" Ensuring that radioactive waste is characterized and classified in accordance with 10CFR Part 61.55 and Part 61.56.

Ensuring that radioactive waste is characterized and classified in accordance with volume reduction facility and disposal site licenses and other requirements.

Designating other approved procedures (if required) to be implemented in the packaging of any specific batch of waste.

Providing a designated regulatory point of contact between the Plant and the NRC, volume reduction facility or disposal site.

EN-RW-105, Rev. 1

4.0 continued

Maintaining records of on-site and off-site waste stream sample analysis and Plant evaluations.

Suspending shipments of defectively processed or defectively packaged radioactive wastes from the site when the provisions of this process control program are not satisfied.

5.0 DETAILS An isotopic analysis SHALL be performed on every batch for each waste stream so that the waste can be classified in accordance with 10CFR61. The isotopic and curie content of each shipping container SHALL be determined in accordance with 49CFR packaging requirements. The total activity in the container may be determined by either isotopic analysis or by dose-rate-to-curie conversion.

5.1. Precautions and Limitations

[1] Precautions (a) Radioactive materials SHALL be handled in accordance with applicable radiation protection procedures.

(b) All radioactive waste must be processed or packaged to meet the minimum requirements listed in 10CFR Part 61.56 (a) (1) through (8).

(c) Ifthe provisions of the Process Control Program are not satisfied, suspend shipment of the defectively processed or defectively packaged waste from the site. Shipment may be accomplished when the waste is processed / packaged in accordance with the Process Control Program.

(d) The generation of combustible gases is dependent on the waste form, radioactive concentration and accumulated dose in the waste. Changes to organic inputs (e.g. oil) to waste stream may change biogas generation rates.

[2] Limitations (a) Only qualified personnel will characterize OR package radioactive waste OR radioactive materials for transportation or disposal.

(b) All site personnel that have any involvement with radioactive waste management computer software SHALL be familiar with its functions, operation and maintenance.

EN-RW-105, Rev. 1

5.2. Waste Management Practices

[1] Waste processing methods include the following:

(a) Present and planned practice is NOT to solidify or encapsulate any waste streams.

(b) Waste being shipped directly for burial in a HIC (High Integrity Container) is dewatered to less than 1 percent by volume prior to shipment.

(c) Waste being shipped directly for burial in a container other than a HIC is dewatered to less than 0.5 percent by volume prior to shipment.

(d) IF solidification is required in the future, THEN at least one representative test specimen from at least every 10th batch of each type of radioactive waste will be checked to verify solidification.

(1) IF any specimen fails to verify solidification, THEN the solidification of the batch under test SHALL be suspended until such time as additional test specimens can be obtained, alternative solidification parameters can be determined, and a subsequent test verifies solidification. Ifalternative parameters are determined, the subsequent tests shall be verified using the alternative parameters determined.

(2) IF the initial test specimen from a batch of waste fails to verify solidification, THEN provide for the collection and testing of representative test specimens from each consecutive batch of the same type of waste until at least 3 consecutive initial test specimens demonstrates solidification. The process SHALL be modified as required to assure solidification of subsequent batches of waste.

[2] Operation and maintenance of dewatering systems and equipment include the following:

(a) Present and planned practice is to utilize plant personnel supplemented by vendor personnel or contracted vendor personnel, to operate AND maintain dewatering systems and equipment (as needed to meet disposal site requirements).

(b) All disposal liners are manufactured by and purchased from QA-approved vendors.

[3] ALARA considerations are addressed in all phases of the processes involving handling, packaging AND transfer of any type OR form of radioactive waste (dewatered or dry).

Resin, charcoal media, spent filter cartridges AND sludges are typically processed within shields. Sluiceable demineralizers are shielded when in service. Radiation exposure and other health physics requirements are controlled by the issuance of a Radiation Work Permit (RWP) for each task..

EN-RW-105, Rev. 1

5.3. Waste Stream Sampling Methods and Frequency

[1] The following general requirements apply to Plant waste stream sampling:

(a) Treat each waste stream separately for classification purposes.

(b) Ensure samples are representative, of or can be correlated to the final waste form.

(c) Determine the density for each new waste stream initially or as needed (not applicable for DAW and filters).

(d) Perform an in-house analysis for gamma-emitting radionuclides for each sample sent to an independent laboratory.

(e) Periodically perform in-house analysis for gamma emitting radionuclides for comparison to the current data base values forgamma emitters. (The current database is usually based on the most recent independent laboratory results.)

(f) Resolve any discrepancies between in-house results AND the independent laboratory results for the same or replicate sample as soon as-possible.

(g) Maintain records-of on-site and off-site waste stream sample analysis and evaluations.

[2] When required, waste stream samples should be analyzed, re-evaluated and if necessary, shipped to a vendor laboratory for additional analysis. The same is true when there is a reason to believe that an equipment or process change has significantly altered the previously determined scaling factors by a factor of 10.

Specific examples include but are not limited to:

Changes in oxidation reduction methods such as zinc, injection, hydrogen water chemistry,'

Changes in purification methods including media specialization, media distribution, ion/cation ratios,

" Changes in fuel pe~rformance criteria including fuel leaks 0 Other changes in reactor coolant chemistry.

Sustained, unexplained, changes in the routinely monitored Beta/Alpha ratios, as determined by Radiation Protection,

When there is an extended reactor shutdown (> 90 days).

When there are changes to liquid waste processing, such as bypassing filters, utilizing filters or a change in ion exchange media.

" When there are changes to the waste stream that could change the biogas generation rate.

EN-RW-105, Rev. 1

K 5.3 continued

[3] The following requirements apply to infrequent or abnormal waste types:

(a) Infrequent OR abnormal waste types that may be generated must be evaluated on a case-by-case basis.

(b) The RP Department Supervisor / Specialist responsible for processing AND shipping will determine if the waste can be correlated to an existing waste stream.

(c) IF the radioactive waste cannot be correlated to an existing waste stream, THEN the RP- Department Supervisor / Specialist responsible for processing and shipping SHALL determine specific off-site sampling and analysis requirements necessary to properly classify the material.

[4] Specific sampling methods and data evaluation criteria are detailed in EN-RW-1 04 for specific waste streams.

5.4. Waste Classification

[1] General requirements for scaling factors include the following:

(a) The Plant has established an inferential measurement program whereby concentrations of radionuclides which cannot be readily measured are estimated through ratio-ing with radionuclides which can be readily measured.

(b) Scaling factor relationships are developed on a waste stream-specific basis.

These relationships are periodically revised to reflect current independent lab data from direct measurement of samples. The scaling factor relationships currently used by the sites are as follows:

Hard to detect ACTIVATION product radionuclides and C-14 are estimated by using scaling factors with measured Co-60 activities.

0 Hard to detect FISSION product radionuclides and H-3, Tc-99 and 1-129 are estimated by using scaling factors with measured Cs-137 activities.

0 Hard to detect TRANSURANIC radionuclides are estimated by using scaling factors with measured Ce-1 44 activities. Where Ce-1 44 cannot be readily measured, transuranics are estimated by using scaling factors with measured Cs-1 37 activities. Second order scaling of transuranics is acceptable when Cs-137 and Ce-144 are not readily measurable.

EN-RW-105, Rev. 1

5.4 continued

[2] General requirements for the determination of total activity and radionuclide concentrations include the following:

(a) The activity for the waste streams is estimated by using either Gross Radioactivity Measurement OR Direct Measurement of Radionuclides. Current specific practices are as follows:

DAW - Gross radioactivity measurement in conjunction with the RADMAN computer codes, other approved computer codes or hand calculation.

Filters - Gross radioactivity measurement in conjunction with the FILTRK computer code, other approved computer codes or hand calculation.

All Other Waste Streams Direct measurement of radionuclides in conjunction with the RADMAN computer codes, other approved computer codes or hand calculation.

(b) Determination of the NRC waste classification is performed by comparing the measured or calculated concentrations of significant radionuclides in the final waste form to those listed in 10CFR Part 61.55.

5.5. Quality Control

[1] The RADMAN computer code provides a mechanism to assist the Plant in conducting a quality control program in accordance with the waste classification requirements listed in 10CFR Part 61.55. All waste stream sample data changes are written to a computer data file for future review and reference.

[2] Audits and Management Review includes the following:

(a) Appendix G to 10CFR20 requires conduct of a QC program which must include management review of audits.

(b) Management audits of the Plant Sampling and Classification Program SHALL be periodically performed to verify the adequacy of maintenance sampling and analysis.

(c) Audits and assessments are performed and documented by any of the following:

Radiation Protection Department

Quality Assurance Department

Qualified Vendors (d) Certain elements of the Entergy Quality Assurance Program Manual are applied to the Process Control Program. [QAPM, Section A.1l.c]

EN-RW-105, Rev. 1

5.6. Dewaterinq Operations

[1] Processing requirements during dewatering operations include the following:

(a) All dewatering operations are performed per approved Plant or vendor operating procedures and instructions.

(b) Dewatering limitations and capabilities are verified by vendor Topical Reports or Operating and Testing Procedures.

[2] Dewatered resin activity limitations include the following:

(a) Dewatered resins will not be shipped off-site that have activities which will produce greater than 1.OE+8 rads total accumulated dose over 300 years. This is usually verified by comparing the container specific activity at the time of shipment to the following concentration limits for radionuclides with a half-life greater than five years:

10 Ci (0.37 TBq) per cubic foot.

350 uCi (12.95 MBg) per cubic centimeter 5.7. Waste Packaging Waste in final form will be packaged in accordance with Title 10 and Title 49 of the Code of federal regulations and in accordance with current burial site criteria as is detailed in EN-RW-102.

EN-RW-105, Rev. 1

5.8. Administrative Controls

[1] Information on solid radloactive waste shipped off-site is reported annually to the Nuclear Regulatory Commission in the Annual Radioactive Effluent Release Report as specified by the Offsite Dose Calculation Manual (ODCM) or Technical Specification.

[ANO1 Technical Specifications - 5.6.3] [AN02 Technical Specifications - 6.9.3]

[WF3 Technical Specifications - 6.9.18] [GGNS ODCM - 5.6.3.c] [JAF Technical Specifications - 5.6.3] [PLP ODCM, Appendix A - IV. A].

[2] All changes to the PCP SHALL be documented. All records of reviews performed SHALL be retained as required by the Quality Assurance Program. The documentation of the changes SHALL [GGNS UFSAR, Chapter 16B.1 / TRM -

7.6.3.8 paragraph 2]:

(a) Contain sufficient information to support the change with appropriate analyses or evaluations justifying the change.

(b) Include a determination that the change will maintain the overall conformance of the solidified waste product (if applicable) to existing requirements of Federal, State or other applicable regulations.

[3] 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. [ANO ODCM - L3.2.1.B] [VTY TRM 6.12]

[4] The changes to EN-RW-1 05 SHALL become effective upon review and acceptance by the site's General Plant Manager except as listed below:

(a) For Grand Gulf Nuclear Station, the changes to RW-1 05 SHALL be accomplished as specified in Grand Gulf Nuclear Station Technical Requirements Manual (TRM) Section 7.6.3.8. The changes SHALL become effective upon review and acceptance by the On-site Safety Review Committee (OSRC) and the approval of the GGNS Plant General Manager. [GGNS UFSAR, Chapter 16B.1 / TRM - 7.6.3.8 paragraph 2]

(b) For River Bend Nuclear Station, the procedure approval along with changes to RW-1 05 SHALL be accomplished per the River Bend Nuclear Station Technical Requirements, Section 5.5.14.1. The changes SHALL become effective upon review and acceptance by approval from the River Bend Nuclear Station Plant Manager or Radiation Protection Manager. [RBS Technical Requirements -

5.5.14.1, 5.5.14.2 & 5.8.2]

EN-RW-105, Rev. 1

5.8 Continued (c) For Waterford 3, the procedure approval along with changes to RW-1 05 SHALL be accomplished per Waterford 3 Technical Specifications 6.13.2. The changes SHALL become effective upon review and acceptance by the Waterford 3 General Plant Manager. [WF3 Technical Specifications - 6.13.2.b]

(d) For James A. FitzPatrick Nuclear Station, the procedure approval along with changes to EN-RW-1 05 SHALL be accomplished per the James A. FitzPatrick Station Technical Specifications, Section 5.6.3. The changes SHALL become effective upon review and acceptance through approval from the James A.

FitzPatrick Nuclear Station On-Site Safety Review Committee. [JAF UFSAR, Chapter 11.3.5]

(e) For Vermont Yankee, Changes to the Process Control Program SHALL become effective after review and acceptance by the (OSRC) On-Site Safety Review Committee and the Site VP.

(f) For IPEC, Changes to the Process Control Program SHALL become effective after final review and acceptance by the On-Site Safety Review Committee (OSRC).

5.9. Vendor Requirements

[1] Vendors performing radwaste services under 10CFR61 and 10CFR71 requirements will be on the Entergy Qualified Supplier's List (QSL). [QAPM, Section A.1.c]

[2] Vendors performing radwaste services on-site are to comply with the foilowing:

(a) Dewatering and solidification services SHALL have a NRC-approved Topical Report or other form of certification documenting NRC approval of the processes and associated equipment/containers.

(b) All vendor procedures utilized for performing on-site radwaste processing services (to assure compliance with 10 CFR Parts 20, 61 and 71, State Regulations, burial ground requirements, and other requirements governing the disposal of solid radioactive waste) will be reviewed per the requirements of EN-LI-1 00, technically by the applicable site's Radiation Protection organization and only be accepted per the approvals specified in Section 5.8 [4].

(c) All changes to vendor procedures for ongoing on-site radwaste services will be reviewed technically by the site's Radiation Protection organization and screened per the requirements of EN-LI-1 00. Significant procedural changes will require the approvals specified in Section 5.8 [4]. During screening, the level of significance for procedural changes on equipment and process parameters may warrant the full 10CFR50.59 documentation and approval process.

EN-RW-105, Rev. 1

-J 5.9 continued (d) Plant management SHALL review vendor(s) topical reports and test procedures per applicable requirements in Section 5.8.

NOTE The PCP does not have to include the vendor's Topical Report if it has NRC approval, or has been previously submitted to the NRC.

(e) Plant management review will assure that the vendor's operations and requirements are compatible with the responsibilities and operation of the Plant.

(f) Training requirements and records listed in Section 5.10 also apply to contracted vendors.

5.10. Miscellaneous

[1] Special tools and equipment (a) Frequency of Use and Descriptions Required tools and equipment will vary depending on the specific process and waste container that is used. The various tools and equipment which may be required are detailed in specific procedures developed to govern activities described in this document.

[2] Pre-requisites (a) Maintenance of Regulatory Material Ensure that a current set of DOT, NRC, EPA and applicable State regulations, vendor processing facility and disposal site regulations and requirements are maintained at the site and are readily available for reference. The use of web based regulations is acceptable.

(b) Representative Radionuclide Sample Data Ensure that representative radionuclide sample data is on file for each active waste stream. Unless operation conditions or changes in processing methods require increased sample frequency, data is considered to be current if it meets the requirements of, EN-RW-1 04.

EN-RW-105, Rev. 1

5.10 continued (c) Initial and Cyclic Training

A training program SHALL be developed, implemented and maintained for all personnel involved in processing, packaging, handling and transportation of radioactive waste to ensure radwaste operations are performed within the requirements of NRC Information Bulletin 79-19 and 49CFR Part 172.700 through Part 172.704.

" Training requirements and documentation also apply to contracted on-site vendors.

NOTE Cyclic training is defined as within three years for DOT, and two years for IATA (d) Specific employee training is required for each person who performs the following job functions [172.702(b)].

Classifies hazardous materials.

" Packages hazardous materials.

" Fills, loads and/or closes packages.

" Marks and labels packages containing hazardous materials.

" Prepares shipping papers for hazardous materials.

Offers or accepts hazardous materials for transportation.

" Handles hazardous materials.

" Marks or placards transport vehicles.

Operates transport vehicles.

Works in a transportation facility and performs functions in proximity to hazardous materials which are to be transported.

Inspects or tests packages.

EN-RW-105, Rev. 1

5.10 continued (e) Cyclic training is defined as within three years for DOT & within two years for IATA.

Copies of training records are required for as long as a person is employed and 90 days thereafter. The records should include, as a minimum, the following:

Trainee's name and signature

Training dates

Training material or source reference 0 Trainer's information 6.0 INTERFACES

[1] EN-LI-1i00, "Process Applicability Determination"

[2] EN-RW-104, "Scaling Factors"

[3] EN-QV-104, "Entergy Quality Assurance Program Manual Control" 7.0 RECORDS

[1] Documentation of pertinent data required to classify waste and verify solidification will be maintained on each batch of processed waste as required by approved procedures.

[2] Documentation will also be maintained to ensure that containers, shipping casks, and methods of packaging wastes meet applicable Federal regulations and disposal site criteria. The records of reviews performed and documents associated with these reviews will be maintained as QA records.

EN-RW-105, Rev. 1

8.0 OBLIGATION AND REGULATORY COMMITMENT CROSS-REFERENCES Document Document NMM Procedure Site Applicability Section Section ANO ODCM L3.2.1 .B 5.8 [3] ANO ANO1 Technical Specifications 5.6.3 5.8 [1] ANO ANO2 Technical Specifications 6.9.3 5.8 [1] ANO RBS Technical Requirements 5.5.14

RBS RBS Technical Requirements 5.5.14.1 5.8 [3] RBS 5.8 [4] (b)

RBS Technical Requirements 5.5.14.2 5.8 [4] (b) RBS RBS Technical Requirements 5.8.2 5.8 [4] (b) RBS WF3 Technical Specifications 1.22

WF3 WF3 Technical Specifications 6.9.18 5.8 [1] WF3 WF3 Technical Specifications 6.13.2.b 5.8 [4] (c) WF3 JAF ODCM 6.2.1 5.8 [1] JAF JAF Technical Specifications 5.6.3 5.8 [11, 5.8 [4] JAF JAF FSAR Chapters 7 and 5.8 [4] JAF 11 11759 - NRC IN 79-19 All

WF3 GGNS UFSAR, Chapter 16B.1 / 7.6.3.8 1.0 GGNS TRM paragraph 1 GGNS ODCM 5.6.3.c 5.8 [1] GGNS GGNS FSAR 11.4.5.S2 5.9 [2](a) GGNS GGNS FSAR 11.4.2.3AS7 5.9 [2](a) GGNS IPN-99-079 All

IPEC Appendix B Technical Section 4.5, Specifications RECS ODCM IPEC Part 1 PLP Technical Specifications 5.5.15 5.8 [4] PLP PLP ODCM Appendix A - 5.8 [1] PLP IV. A NRC Letter 1.98.091 All

VY NRC Letter 1.88.078 All

VY VY TRM 6.12 5.8(3) VY QAPM Section A.1 .c

All

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

9.0 ATTACHMENTS None EN-RW-105, Rev. 1

CONTROLLED DOCUMENT REVIEW/APPROVAL FORM DOCUMENT INFORMATION REVIEWS I APPROVALS Action Taken jAction Date,' Last Name First Name Facility Approval Note: all fields are taken from the TIMX600 panel for documents with an associated routing/approval (TIMX600) panel.

ATTACHMENT 9.1 NMM REVIEW AND APPROVAL FORM (RAF)

NMM REVIEW AND APPROVAL FORM NMM PROCEDURE TITLE: NMM NO. REV NO. I TC NO.

PROCESS CONTROL PROGRAM EN-RW.l05 .

TYPE OF CHANGE:

NEW El REV - EDITORIAL El REV - NON-EDITORIAL N TEMPORARY CHANGE El CANCELLATIOND- ,

ANO El GGNS E IPEC[ "

IJAFQ ElIPLPD I PNPSO [I Supersedes NMM:

REVIEWING SITE Supersedes Site RBS U I VYl3 W3 0 JNPl0 1HONC 0 BRP 0 ]

EDITORIAL CHANGE REVIEW PROCESS NON-EDITORIAL CHANGE REVIEW PROCESS SITE PROCEDURE CHAMPION NOTIFICATION: (Record Names of Si TECHNICAL REVIEWER (verify that NMM Overview CMI is complete):

Procedure Champions notified and the date by Procedure Writer.) Comments Made (Attach) El -

ANO: Date/ N/meSigatre:" ,.,. Date:

Phone Pss -j1/ 9/19 BRP: Date: PROCESS APPLICABILITY REVIEWER:

GGNS: Date: Comments Made (Ach) JA per EN-LI-1 00 Exclusion E]

IPEC: Date: Name/Signature: D'gl*ab L. Myers, K-N 3278 Date: 7-21{48

--- O t Phone #:8-558-4590 A,- -3*-u' Da COMMITMENT REVIEWER (verify that NMM Procedure Commitment PLP: D e: Review Process CMI is complete): Cor nents Made (Attach) El

_P ate

.Name: Douglas L. Myers, KCN 3278 4D,,./ "-. ate: 7-22-08 PNPS: Fate: Phone #:8-558-4590 ir--'r. k ' ,,

RBS: Date: CROSS-DISCIPLINE REVIEW (use additional RAF as necessary)

VY Date: Required YES El NO 'No' Justification RP shipping primarily; OPS reviewed and indicated no need to cross-discipline review.

Date: Department Initials Date:

Date: Department , Initials Date:

NP: Department Initials Date:

HON: Date Department Initials Date:

TEMPORARYAHANGE REVIEW PROCESS CONDITIONAL REVIEWS (Also used for Temporary Change as required)

SITE PROCEDURE CH PION REVIEW OSRC REVIEW: Meeting Number:

Change Managementtveloped for Site: Comments Made (Attach)

YES El attach NO , justify OSRC Chair: ,t-TC EXPIRATION D E: (Not to exceed 90 das) Name/Signature DATE:

TECHNICAL REVI WER (verify that NMM CMI overview is complete): LEVEL III REVIEW (NDE Xures Pro only)

Comments Made Attach) El Name: Date:

Phone#: Name/Signature: DATE:

PROCESS APPLICABILITY REVIEWER SITE PROCEDURE CHAMPION REVIEW (Signature includes Comments de (Attach) [E NiA per EN-LI-100 Exclusion El acknowledgement that NMM CMI overview is complete)

Name: Date: 1. Supersede/cancel another site or NMM procedure? (If YES, record the Phone #: procedure(s) on the NMM Title Page.) YES 17 NO a CROSS-[DSCIPLINE Required ES El NO REVIEW (use additional RAF as necessary)

ELNo' Justification 2. Delete/alter an existing regulatory commitment or obligation? (If YES, ired/Ye S El NO 'e:t, . Dt . contact Licensing before implementing.) YES El NO a uepartren, initals Date:

Det ent Initials Date: 3. Change Management Developed for Site:

Depa ment Initials Date: YES a attach SIT*/SRO APPROVAL NO El justify Co'ments Made (Attach) Proposed Effective Date: 7-26-08 E.......... Print and Sign name:,,'.,i/-_, /6 / :*' DATE 7,-',A_

P7ml and Sign name: DATE: Job

Title:

PHONE#:('

PROCEDURE WRITER- Print and Sign name: (Signature acknowledges (1) NMM CMI overview is complete, (2) ECH TEAR initiated.)

NAME: DATE:

PROCEDURE OWNE13 PROVAL: Print and Sign name GOVERNANCE O NER APPROVAL: Print and Sign name A 111 NAME: A' DATE: IV1. NAME: 1, DATE: ~~f EN-AD-101 REV 9

ATTACHMENT 9.1 PROCESS APPLICABILITY DETERMINATION FORM Sheet I of 7 I. OVERVIEW Facility: River Bend Station (RBS)

Proposed Activity I Document: EN-RW-105, Process Control Program_ Change/Rev. #: 1 Description of Proposed Activity: This procedure change is a major rewrite of the document to include additions for waste classification, quality control, waste packaging. dewatering, waste stream sampling, and miscellaneous items. See the procedure cover page for additional details.

II. REGULATORY REVIEW PROCESS REFERENCES REVIEWED /.SEARCH METHODOLOGY Provide the requested information for each item below.

1. For documents available electronically:

a. List Search Engine or LBDs searched, and keywords used:

Autonomy was used keyed to the USAR, ODCM, QAPM, SERs, Holtec 212 report, Holtec C of C, Holtec FSAR, Final Environmental Statement, the Environmental Report-Operating License Stage, the Emergency Plan and the TS/TRM to search the following keywords/phrases: shipping training, transportation training, DOT training, IATA, Chem Nuclear, process control program, waste stream, waste processing, waste classification, dewatering, waste packaging, solidification, waste handling, scaling factor and waste management.

b. List relevant sections of controlled electronic documents reviewed:

USAR 11.2, 11.3 and 11.4.

2. LBD sections reviewed manually (hardcopy):

None

3. For those documents that are not available for either electronic search or hardcopy manual search (e.g., the Security Plan), use the specific questions provided in Sections III, IV, and V of Attachment 9.2 of EN-LI-100 as needed. IF the questions are used, THEN document this below.

ATTACHMENT 9.1 PROCESS APPLICABILITY DETERMINATION FORM Sheet 2 of 7 "

II. PROCESS REVIEW Does the proposed activity affect, invalidate, or render incorrect, OR have the potential to affect, invalidate, or render incorrect, information contained in any of the following processes?

~PROCESS. APPLICABILITY $YES NO 2 REVIEW RESULTS.

Chemistry I Effluents El 0 Radwaste / Process Control Program (PCP) a 0 RBS RP shipping personnel (EN-RW-105 or contact the Radiation Protection Dept.) were involved in discussions with the fleet as this change was developed and reviewed.

Radiation Protection / ALARA [] RP Radwaste personnel were (EN-RP-1 10 or contact the Radiation Protection Dept.) involved in the procedure change development and are cognizant of the changes.

Inservice Inspection Program (10 CFR 50.55a / ENN-DC-120, ENS-DC-120) El a Inservice Testing Program (10 CFR 50.55a I EN-DC-332) 0l 0 Maintenance Rule Program (10 CFR 50.65/ EN-DC-204, -205, -206; -207) El 0 IF any box is checked "Yes," THEN contact the appropriate department to ensure that the proposed change is acceptable and document the results in the REVIEW RESULTS column.

IV. LICENSING BASIS DOCUMENT REVIEW IV.A.1 Does the proposed activity affect, invalidate, or render incorrect, OR have the potential to affect, invalidate, or render incorrect, information contained in any Part 50 licensing basis document that is controlled in accordance with 10 CFR 50.90?

LICENSING BASIS DOCUMENTS (Control Process) YES NO SECTIONS AFFECTED OR LBDCR #

Operating License (OL) I Technical Specifications (TS) El U (10 CFR 50.90 / EN-LI-103)

NRC Orders (10 CFR 50.90/ EN-LI-1 03 or as directed by the Order) El U IF any box is checked "Yes," THEN contact the site Licensing department to seek a license amendment and document the affected sections or the LBDCR # in the SECTIONS AFFECTED OR LBDCR # column.

ATTACHMENT 9.1 PROCESS APPLICABILITY DETERMINATION FORM Sheet 3 of 7 IV.A.2 Does the proposed activity affect, invalidate, or render incorrect, OR have the potential to affect, invalidate, or render incorrect, information contained in any Part 72 spent fuel storage cask Certificate of Compliance that is controlled in accordance with 10 CFR 72.244?

LICENSING BASIS DOCUMENTS (Control Process) YES NO NIA SECTIONS AFFECTED OR.LBDCR #

Storage Cask Certificate of Compliance (CoC) El !1 El IF any box is checked "Yes," THEN contact the site Licensing department to request the Certificate Holder pursue a CoC amendment and document the affected sections or the LBDCR # in the SECTIONS AFFECTED OR LBDCR # column.

IV.A.3 Does the proposed activity affect, invalidate, or render incorrect, OR have the potential to affect, invalidate, or render incorrect, information contained in any Licensing Basis Document(s) that is controlled in accordance with a regulatory process other than 10 CFR 50.59 or 10 CFR 72.48?

LICENSING BASIS DOCUMENTS (Control Process) YES }NO SECTIONS AFFECTED OR LBDCR #

Quality Assurance Program Manual (QAPM) El U (10 CFR 50.54(a) / EN-QV-104)

Fire Protection Program (FPP) [includes the Fire Hazards Analysis El U (FHA)J (OL Condition, 10 CFR 50.48 / EN-DC-128)

Emergency Plan (10 CFR 50.54(q) / EN-EP-305) E] U Environmental Protection Plan Elm (Appendix B of the OL, Environmental Evaluation / EN-EV-1 15, EN-EV-1 17, EN-LI-103)

Security Plan El U

[10 CFR 50.54(p) / ENS-NS-210 or contact the site Security Dept.]

Site Specific Exemptions to CFR El *

(10 CFR 50.12, 10 CFR 55.11, 10 CFR 55.13, 10 CFR 72.7)

Contact site Licensing IF any box is checked "Yes," THEN ensure the applicable regulatory review is performed, prepare an LBDCR per NMM Procedure EN-LI-113 if the LBD is to be changed, and document the affected sections or the LBDCR # in the SECTIONS AFFECTED OR LBDCR # column.

IV.B COMMITMENT REVIEW Does the proposed activity modify 'or delete a commitment or obligation? 0I Yes a No IF "Yes," THEN ensure the effect to the commitment is evaluated in accordance with NMM Procedure EN-LI-110.

ATTACHMENT 9.1 PROCESS APPLICABILITY DETERMINATION FORM ATTACHMENT 9.1 PROCESS APPLICABILITY DETERMINATION FORM Sheet 4 of 7 V. DOCUMENTS CONTROLLED VIA 10 CFR 50.59 / 10 CFR 72.48 V.A Does the proposed activity affect, invalidate, or render incorrect, OR have the potential to affect, invalidate, or render incorrect, information contained in any Licensing Basis Document that is controlled in accordance with 10 CFR 50.59? (document the affected sections or the LBDCR # in the SECTIONS AFFECTED OR LBDCR # column)

LICENSING BASIS DOCUMENTS (Control Process) YETSNO SECTIO.0:NS .AFFEC.TE .D:OR .L.BDCR #

Updated Final Safety Analysis Report (UFSAR) C] a (10 CFR 50.591 EN-LI-100 / EN-LI-101)

TS Bases (10 CFR 50.59 / EN-LI-1O0 / EN-LI-101) 5 U Technical Requirements Manual (TRM) (including TRM Bases) El U (10 CFR 50.59 / EN-LI-100 / EN-LI-101)

Offsite Dose Calculation Manual (ODCM) El *

(TS Administrative Controls, 10 CFR 50.59 / EN-LI-100 / EN-LI-101)

Core Operating Limits Report (COLR) (10 CFR 50.59 / EN-LI-100 / EN-LI-101 E] 0 V.B Does the proposed activity affect, invalidate, or render incorrect, OR have the potential to affect, invalidate, or render incorrect, information contained in any Licensing Basis Document that is controlled in accordance with 10 CFR 72.48? (document the affected sections or the LBDCR # in the SECTIONS AFFECTED OR LBDCR # column)

LICENSING BASIS DOC..UMENTS (Control Process) YES NO NA SECTIONS AFFECTED.OR LBD.CR.

Cask FSAR (CFSAR) (including the CTS Bases) El 0 El (10 CFR 72.48 / EN-LI-100 / EN-LI-1 12) 10 CFR 72.212 Evaluation Report (212 Report) El 0El (10 CFR 72.48 / EN-LI-100 I EN-LI-112)

V.C Can the proposed activity be dispositioned by one of the following criteria? Check the appropriate box (if any).

An approved, valid 50.59/72.48 Evaluation covering associated aspects of the proposed activity already exists. Reference 50.59172.48 Evaluation # (if applicable) or attach documentation. Verify the previous 50.59/72.48 review remains valid.

El The NRC has approved the proposed activity or portions thereof or a license amendment being reviewed by the NRC addresses the proposed activity. Reference the approval document:

El The proposed activity is controlled by a specific regulation, such as those identified in Section III or Section IV.A.3 (e.g., Maintenance Rule, QAPM, FPP, etc.), as discussed in NEI 96-07, Section 4.1.

Reference the controlling regulation:

IF the proposed activity can be dispositioned by one of the criteria in Section V.C, THEN proceed to Section VII and provide basis for conclusion in Section VII.A; otherwise, continue to Section V.D.

ATTACHMENT 9.1 PROCESS APPLICABILITY DETERMINATION FORM Sheet 5 of 7 V.D TEST OR EXPERIMENT [10 CFR 50.59(c)(1)]

1. Does the proposed activity involve a test or experiment NOT described in [] Yes the UFSAR? UNo

2. Does the proposed activity involve a test or experiment NOT described in El Yes the CFSAR?

No V.E Can the proposed activity potentially affect a design function, UFSAR CFSAR method of controlling or performing a design function, or a El Yes El Yes method of evaluation of a design function as described in the UFSAR or CFSAR? No U No IF any box in Section V.D is checked "Yes," THEN perform a 50.59 and/or 72.48 Evaluation in accordance with EN-LI-101 and/or EN-LI-112.

IF any box in Sections V.A, V.B, and/or V.E is checked "Yes," THEN proceed to Section VI OR perform a 50.59 and/or 72.48 Evaluation in accordance with EN-LI-101 and/or EN-LI-112.

IF all the boxes in Sections V.A, V.B, V.D and V.E are checked "No," THEN proceed to Section VII and provide basis for conclusion in Section VII.A.

ATTACHMENT 9.1 PROCESS APPLICABILITY DETERMINATION FORM Sheet 6 of 7 VI. 50.59 / 72.48 SCREENING REVIEW VI.A DESIGN FUNCTION SCREENING (Check the appropriate box associated with any "YES" response to Section V.E, if the criteria are met)

- 10 CFR 50.59 [10 CFR 50.59(c)(1)]

The proposed activity meets all of the following criteria regarding design function:

Does not adversely affect the design function of an SSC as described in the UFSAR; AND

& Does not adversely affect a method of performing or controlling a design function of an SSC as described in the UFSAR; AND

Does not adversely affect a method of evaluation that demonstrates intended design function(s) of an SSC will be accomplished as described in the UFSAR.

LI 10 CFR 72.48 [10 CFR 72.48(c)(1)] (Applicable to sites with an ISFSI)

The proposed activity meets all of the following criteria regarding design function:

Does not adversely affect the design function of an SSC as described in the CFSAR; AND

" Does not adversely affect a method of performing or controlling a design function of an SSC as described in the CFSAR; AND

" Does not adversely affect a method of evaluation that demonstrates intended design function(s) of an SSC will be accomplished as described in the CFSAR.

IF the 10 CFR 50.59 box is checked, THEN complete VI.B, below, and proceed to Section VII. IF the proposed activity does not meet the criteria, THE..N perform a 50.59 Evaluation in accordance with NMM Procedure EN-LI-1I01, attach a copy to this form, and THEN proceed to Section VII.

IF the 10 CFR 72.48 box is checked, THEN complete VI.B, below, and proceed to Section VII. IF the proposed activity does not meet the criteria, THEN perform a 72.48 Evaluation in accordance with NMM Procedure EN-LI-112, attach a copy to this form, and THEN proceed to Section VII.

VI.B BASIS Provide a clear, concise basis for determining the proposed activity may be screened out such that a third-party reviewer can reach the same conclusions. Provide supporting documentation or references as appropriate.

The changes to EN-RW-105 from revision 0 to revision 1 add information needed to help radioactive material shippers in the performance of their tasks. The information added regarding solidification in step 5.211](d) applies to the TRM in TR 3.11.3. The procedure implements the requirements of the technical requirement and will result in compliance if properly implemented. The fleet radwaste lead was contacted regarding procedure content versus River Bend technical requirements manual (TRM) requirements and wording was clarified/verified to ensure compliance with the TRM.

Waste streams are discussed in USAR chapter section 11.2 and waste processing in chapter sections 11.3 and 11.4. The material in the procedure does not change or misrepresent any of the information provided in the USAR and therefore, is just related to using the USAR information to physically manipulate the waste and waste streams to do the work needed to gather, process and ship the waste generated at the site.

Dewatering is mentioned in the USAR, but the references are primarily to the dewatering performed as part of the site construction process. No references were noted that showed a conflict between the procedure stipulations and the requirements of the USAR for waste processing.

The Environmental report-Operating License Stage discusses solidification based upon earlier methods when a vendor was employed on-site to actually solidify certain waste. The use of an alternative method such as is now the primary processing method is not prevented by the report. No conflict was noted to prevent use of EN-RW-105, revision 1.

Based upon the license basis document (LBDs) reviews, EN-RW-105, revision I complements and complies with the LBDs in force and therefore, may be implemented after appropriate reviews and approvals.

ATTACHMENT 9.1 PROCESS APPLICABILITY DETERMINATION FORM Sheet 7 of 7

VII. REGULATORY REVIEW

SUMMARY

VII.A GENERAL REVIEW COMMENTS (Provide pertinent review details and basis for conclusions if not addressed elsewhere.)

See section VIB for additional information.

Waste streams are discussed in USAR chapter section 11.2 and waste processing in chapter sections 11.3 and 11.4. The material in the procedure does not change or misrepresent any of the information provided in the USAR and therefore, is just related to using the USAR information to physically manipulate the waste and waste streans to do the work needed to gather, process and ship the waste generated at the site.

Dewatering is mentioned in the USAR, but the references are primarily to the dewatering performed as part of the site construction process. No references were noted that showed a conflict between the procedure stipulations and the requirements of the uSAR for waste processing.

The Environmental report-Operating License Stage discusses solidification based upon earlier methods when a vendor was employed on-site to actually solidify certain waste. The use of an alternative method such as is now the primary processing method is not prevented by the report. No conflict was noted to prevent use of EN-RW-105, revision 1.

The procedure implementation of the RBS technical requirements manual was discussed with the fleet radwaste lead and with site personnel to clarify/verify wording met the requirements.

Based upon the license basis document (LBDs) reviews, EN-RW-105, revision 1 complements and complies with the LBDs in force and therefore, may be implemented after appropriate reviews and approvals.

VII.B CONCLUSIONS

1. Is a change to an LBD being initiated? F] Yes IF "Yes," THEN enter the appropriate change control process and include N No this form with the change package.

2. Is a 10 CFR 50.59 Evaluation required? ED Yes IF "Yes," THEN complete a 50.59 Evaluation in accordance with EN-LI-101

No and attach a copy to the change activity.

3. Is a 10 CFR 72.48 Evaluation required? [] Yes IF "Yes," THEN complete a 72.48 Evaluation in accordance with EN-LI-112 5 No and attach a copy to the change activity.

VIII. SIGNATU [RES'1 Preparer: Douglas L. Myers/ A/T(* & /KCN327, 3/EOI-RBS/RP/7-24-08 Name (print) / Signature / CompanyI Department I Date Reviewer: Tha.c /4;gZC~ ~ ~ '-

Name (print) I Signature / Company / Department / Date Process Applicability Exclusion Site Procedure I Champion or Name (print) I Signature I Company / Department / Date Owner:

1 Signatures may be obtained via electronic processes (e.g., PCRS, ER processes, IAS signature), manual methods (e.g., ink signature), e-mail, or telecommunication. If using an e-mail , attach it to this form.

RBG-46911, Radioactive Effluent Release Report for 2008

Contents

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2.0 REFERENCES

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