ML17122A279

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Annual Radioactive Effluent Release Report for the Year 2016
ML17122A279
Person / Time
Site: Clinton Constellation icon.png
Issue date: 04/26/2017
From: Marchese B
Exelon Generation Co
To:
Office of Nuclear Reactor Regulation
References
Download: ML17122A279 (162)


Text

~

Exelon Generation, January 01, 2016 - December 31, 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT CLINTON POWER STATION - DOCKET NUMBER 50-461 Prepared by :

Briana Marchese Clinton Power Station Page 1of162

TABLE OF CONTENTS SECTION# TITLE PAGE 1 Executive Summary 5 2 Introduction 6 3 Supplemental Information 12 4 Radioactive Effluent Data 16 5 Solid Waste Disposal Information 27 6 Dose Measurements and Assessments 30 7 Meteorological Data and Dispersion Estimates 41 8 ODCM Operational Remedial Requirement Reports 100 9 Changes to Radioact ive Waste Treatment Systems 101 10 New Locations for Dose Calculation and/or Environmental Monitoring 102 11 Corrections to Data Reported in Previous Reports 105 12 Changes to the Offsite Dose Calculation Manual 162 Page 2of162

LIST OF TABLES TABLE# TITLE PAGE Gaseous Effluents - Summation of All Releases 19 1

  • lA Air Doses Due to Gaseous Releases 17
  • lB Doses to a Member of the Public Due to Radioiodines, Tritium, 17 Carbon-14, and Particulates in Gaseous Releases 2 Gaseous Effluents - Nuclides Released 18 3 Radioactive Gaseous Waste LLD Values 19 4 Waterborne Effluents - Summation of All Releases 21 5 Waterborne Effluents - Nuclides Released 22 6 Radioactive Liquid Waste LLD Values 23 7 Solid Waste and Irradiated Fuel Shipments 28 Maximum Offsite Doses and Dose Commitments to Members of the Public 8 31 In Each Sector Calculated Doses to Members of the Public During Use of the Department 9 of Natural Resources Recreation Area in the East-Southeast Sector within 31 the CPS Site Boundary Calculated Doses to Members of the Public During Use of the Road in the 10 35 Southeast Sector within the CPS Site Boundary Calculated Doses for the Residents in the South-Southeast Sector within the 11 36 CPS Site Boundary Calculated Doses for the Residents in the Southwest Sector within the CPS 12 37 Site Boundary Calculated Doses to Members of the Public During Use of the Agricultural 13 38 Acreage in the South-Southwest Sector within the CPS Site Boundary Calculated Doses for the Residents in the West-Southwest Sector within the 14 39 CPS Site Boundary Calculated Doses to Members of the Public During Use of Clinton Lake in 15 40 the Northwest Sector within the CPS Site Boundary 16 Meteorological Data Availability 42 17 Classification of Atmospheric Stability 43 18 Joint Wind Frequency Distribution by Stability Class 44 Page 3 of162

LIST OF FIGURES FIGURE# TITLE PAGE 1 CPS Airborne Effluent Release Points 7 2 CPS Waterborne Effluents Release Pathway 8 3 Effluent Exposure Pathways 10 4 Areas Within the CPS Site Boundary Open to Members of the Public 33 Page 4of162

SECTION 1 EXECUTIVE

SUMMARY

The Annual Radioactive Effluent Release Report (ARERR) is a detailed description of gaseous and liquid radioactive effluents released from Clinton Power Station (CPS) and the resulting radiation doses for the period of January 01, 2016 through December~ 31 2016. This report also includes a detailed meteorological section providing weather history of the surrounding area during this period. The information in the ARERR is used to calculate the offsite dose to our public.

The report also includes a summary of the amounts of radioactive material contained in solid waste that is packaged and shipped to a federally approved disposal/burial facility offsite. Additionally, this report notifies the U.S. Nuclear Regulatory Commission (NRC) staff of changes to CPS's Offsite Dose Calculation Manual (ODCM), as well as exceptions to the CPS effluent monitoring program and a summary of events that must be reported in. accordance with ODCM Remedial Requirements 3.1.1 Action G and 3.2.2 Action G.

The NRC requires that nuclear power facilities be designed, constructed and operated in such a manner as to maintain radioactive effluent releases to unrestricted areas As ,b.ow As Reasonably Achievable (ALARA). To ensure compliance with this criterion, the NRC has established limitations governing the release of radioactivity in effluents.

During 2016, CPS operations were well within these federally required limits. The maximum annual radiation dose delivered to the inhabitants of the area surrounding CPS, due to radioactivity released from the station, was 5.66E-02mrem (milliroentgen). The radiation dose to the public in the vicinity of CPS was calculated by using the concentration of radioactive nuclides from each gaseous effluent release coupled with historical weather conditions. The dose from CPS gaseous radioactive effluents was only a small fraction of the limit for the maximum exposed member of the public. There were no liquid effluent releases in 2016. As such, there was no dose received by the public from the liquid radioactive effluent pathway.

Page 5of162

SECTION 2 INTRODUCTION CPS is located in Harp Township, DeWitt County approximately six miles east of the city of Clinton in east-central Illinois. CPS is a ~1,140 megawatt gross electrical power output boiling water reactor. Initial fuel load commenced in September of 1986 with initial criticality of the reactor occurring on February 27, 1987. Commercial operation commenced in April 1987 and the reactor reached 100% power for the first time on September 15, 1987.

CPS releases airborne effluents via two gaseous effluent release points to the environment. They are the Common Station Heating, Ventilating, and Air Conditioning (HVAC)

Vent and the Standby Gas Treatment System (SGTS) Vent as shown in Figure 1. Each gaseous effluent release point is continuously monitored consisting of a surveillance program of periodic sampling and analysis as specified in the ODCM.

CPS is licensed to release radioactive liquid effluents in a batch mode, however there were no radioactive liquid releases in 2016 at CPS. Each release would have been sampled and analyzed prior to release if this were to occur. Depending upon the amount of activity in a release, liquid effluents would vary from 10 to 300 gallons per minute (GPM). This volume is further combined with both Plant Service Water flow, which is a minimum of approximately 5,000 GPM, along with Plant Circulating Water flow, another 0 to 567,000 GPM, in the seal well, just prior to entering the 3.4 mile discharge flume into Lake Clinton as demonstrated in Figure 2.

Processing and Monitoring CPS strictly controls effluents to ensure radioactivity released to the environment is maintained ALARA and does not exceed federal release limit criteria. Effluent controls include the operation of radiation monitoring systems within the plant as well as an offsite environmental analysis program. In-plant radiation monitoring systems are used to provide a continuous indication of radioactivity in effluent streams. Some are also used to collect particulate and radioiodine *samples. Radioactive effluent related samples are analyzed in a controlled laboratory environment to identify the specific concentration of those radionuclides being released. Sampling and analysis provides. for a more sensitive and precise method of determining effluent composition. to complement the information provided by real-time radiation monitoring instruments.

Beyond the plant itself, a Radiological Environmental Monitoring Program (REMP) is maintained in accordance with Federal Regulations. The purpose of the REMP program is to assess the radiological impact on the environment due to the operation of CPS. Implicit in this charter is the license requirement to trend and a.ssess radiation exposure rates and radioactivity concentrations that may contribute to dose to the public. The program consists of two phases; pre-operational and operational. During the pre-operational phase of the program, the baseline for the local radiation environment was established. The operational phase of the program includes the objective of making confirmatory measurements to verify that the in-plant controls for the release of radioactive material are functioning as designed.

Assessment of the operational impact of CPS on the environment is based on data collected since initial criticality of the reactor.

Page 6of162

FIGURE 1 CPS AIRBORNE EFFLUENT RELEASE POINTS TURBINE BUI.DING JW>WASTE AND ROOF EL 876'0- MACHIHE SHOP BUILDING ROOF EL 781'0" CONTROL ROOM AlRHANOUNG UNITS I

I FUS. BW.DINQ ROOF EL aoo*o*

SGTS FILTER UNITS L_ _ _ _ _ _  ::v (,G' EL. 710'0")

HVAC Exhaust Vent SGTS Exhaust Vent 200 200 Release Point Height (feet) 190 190 Building-Height (feet)

Duct* Pipe Release Point Geometry 120 2 Release Point Area (ft2)

  • 12* 1 Release Point Diameter (feet) 2,738 73 Annual Average Flow Rate (ft3/sec) 33 41 Vertical Exit Velocity (feet/sec) 2
  • Effective 2(A/rt) diameter Page 7of162

FIGURE 2 CPS. WATERBORNE EFFLUENTS RELEASE PATHWAY PLANT SBMCE WATER RWBLOG.

(UP TO 25.000 *.

l CAT LEAST 5000 GPMl OIJJ,.ONSl8.¢CHJ5---'--.......- - '

UQUIQ RADWASTE DISCHARGE LINE I

(t0-60 OR 60-300 GPM>

~-RAD~TtONMONITOR IJ.J,RMltRIP SErPOIHT CAl.CULli1'ED BASED

  • ON El.ai B)JCH ISOfOPlC#iwYslS ml>

DlWTlON f\.OW

~ lSOLATlON VALVE TERMINATES RS.EASE ON KGH fW>WION.

HlGH RELEASE Fl.OW ME 0Rll1N EJ COMPOSlTE SAMPLER 011..UTION Fl.OW RATE cou.ecrs IJIPROlCIMAIEU' 20 mt E\'ERV GO MINUTES FROM 11£ CXSOOARGE

~

fWME FOR MOHnilY RUJYSIS SEALWELL LAKE PLANT CIRCULATING ~----------'---' .....__.....___.._ _ _ ____.._. CUN.TON WATER DISCHARGE FLUME (0-567 .000 GPM) .

3.4 MILES Page 8of162

Exposure Pathways A radiological exposure pathway is the vehicle by which the public may become exposed to radioactivity released from nuclear facilities. The major pathways of concern are those that could cause the highest calculated radiation dose. These pathways are determined from the type and amo_unt of radioactivity released, the environmental transport mechanism and how the plant environs are used (i.e., residence, gardens, etc.). The environmental transport mechanism includes the historical meteorological characteristics of the area that are defined by wind speed and wind direction. This information is used to evaluate how the radionuclides will be distributed within the surrounding area. The most important factor in evaluating the exposure pathway is the use of the environment by the public living around CPS. Factors such as location of homes in the area, use of cattle for milk and the growing of gardens for vegetable consumption are important considerations when evaluating exposure pathways. Figure 3 illustrates the effluent exposure pathways that were considered.

The radioactive gaseous effluent exposure pathways include direct radiation, deposition on plants and soil and inhalation by animals and humans. The radioactive.liquid effluent exposure pathways include fish consumption and direct exposure from Clinton Lake.

Dose Assessment Whole body radiation involves the exposure of all organs in the human body to ionizing radiation. Most naturally occurring background radiation exposures consist of whole body exposure although specific organs can receive radiation exposure from distinct radionuclides.

These radionuclides enter the body through inhalation and ingestion and seek different organs depending on the nuclide. For example, radiOactive iodine sele~tively concentrates in the thyroid, radioactive cesium collects in muscle and liver tissue and radioactive strontium in mineralized bone.

The total dose to organs from a given radionuclide also depends on the amount of activity in the organ and the amount of time that the radionuclide remains in the body. Some radionuclides remain for very short periods of time due to their rapid radioactive decay and/or elimination rate from the body, while others may remain longer.

Radiation dose to the public in the area surrounding CPS is calculated for each release using historical weather conditions coupled with the concentrations of radioactive material present. The dose is calculated for all sixteen geographical sectors surrounding CPS and includ.es the location of the nearest residents, vegetable gardens producing broad leaf vegetables and dairy animals in all sectors. The calculated dose also uses the scientific concept of a "maximum exposed individual" and "standard man", and the maximum use factors for the environment, such as how much milk an average person consumes and how much air a person breathes in a year.

Section 6 contains more detailed information on dose to the public.

Page 9of162

FIGURE 3 EFFLUENT EXPOSURE PATHWAYS ANIMALS CLINTON POWER (MILK, MEAT) STATION CONSUMED BY PEOPLE

  • ~

RELEASES 1'CONSUMED DILUTED CONSUMED BY PEOPLE BY LAKE BY ANIMALS

~

CONSUMED BY PEOPLE FISH

' /

Page 10 of 162 l_

Gaseous Effluents Gaseous effluent radioactivity released from CPS is classified into two (2) categories.

131 133 3 14 The first category is noble gases. The second category consists of 1 , 1 , H , C and all radionuclides in particulate form with radioactive half-lives greater than eight (8) days. Noble gases - such as xenon and krypton - are biologically and chemically non-reactive. As such,

  • 85 133 135 these radionuclides - specifically Kr m, Xe and Xe - are the major contributors to external 131 133 3 14 doses. Halogens 1 and 1 , H , C and radionuclides in particulate form with radioactive half-lives greater than eight (8) days are the major contributors to internal doses.

Liquid Effluents Liquid effluents may originate from two (2) sources at CPS. The first is effluent from the Radioactive Waste Treatment System. This water is demineralized prior to release.

Samples are taken after the tank has been allowed to adequately recirculate. The second is from heat exchanger leaks found in closed cooling water systems that service radioactively contaminated systems. This would be considered an abnor'"l'.al release. As a matter of station management commitment, CPS strives to be a zero (0) radioactive liquid release plant. The last liquid release occurred in September of 1992.

Solid Waste Shipmerits To reduce the radiation exposure to personnel and maintain the federally required ALARA concept, the NRC and the Department of Transportation (DOT) have established limits on the types of radioactive waste and the amount of radioactivity that may be packaged and shipped offsite for burial or disposal. To ensure that CPS is complying with these regulations, the types of waste and the radioactivity present are reported to the NRC.

Page 11 of 162

SECTION 3 SUPPLEMENTAL INFORMATION I. REGULATORY LIMITS The N.RC requires nuclear power facilities to be designed, constructed and operated in such a way that the radioactivity in effluent releases to unrestricted areas is kept ALARA. To ensure these criteria are met, each Hcense authorizing nuclear reactor operation includes the Offsite Dose Calculation Manual governing the release of radioactive effluents. The ODCM designates the limits for release of effluents, as well as the limits for doses to the general public from the release of radioactive liquids and gases. These limits are taken from Title 10 of the Code of Federal Regulations, Part 50, Appendix I (10CFRSO Appendix I), Title 10 of the Code of Federal Regulations, Part 20.1301 (10CFR20.1301) and Section 5.5.4 of our Station's Technical Specifications. Maintaining effluent releases within these operating limitations demonstrates compliance with ALARA principles. These limits are just a fraction of the dose limits established by the Environmental Protection Agency (EPA) found within Environmental Dose Standard Title 40, Code of Federal Regulations, Part 190 (40CFR190). The EPA has established dose limits for members of the public in the vicinity of a nuclear power plant.

These dose limits are:

Less than or equal to 25 mRem per year to the total body.

Less than or equal to 75 mRem per year to the thyroid.

Less than or equal to 25 mRem per year to any other organ.

Specific limit information is given below.

A.. Gaseous Effluents

1. The maximum permissible concentrations to limit doses for gaseous effluents shall not exceed the values provided within Section 5.5.4.g of Station Technical Specifications. To ensure these concentrations are not exceeded, dose rates due to radioactive materials released in gaseous effluents from the site to areas at and beyond the site area boundary shall be limited to the following:
a. Noble gases Less than or equal to 500 mRem/year to the total body.

Less than or equal to 3,000 mRem/year to the skin.

131 133 3 14

b. 1 , 1 , H , C , and all radionuclides in particulate form with radioactive half-lives greater than eight (8) days:

Less than or equal to 1,500 mRem/year to any organ.

Page 12 of 162

2. In accordance with Title 10 of. the Code of Federal Regulations, Part 50, Appendix I, (10CFR50 Appendix I) air dose due to noble gases released in gaseous effluents to areas at and beyond the site boundary shall be limited to the following:
a. Less than or equal to 5 m*Rad for gamma radiation and less than or equal to 10 mRad for beta radiation during any calendar quarter.
b. Less than or equal to 10 mRad for gamma radiation and less than or equal to 20 mRad for beta radiation during any calendar year.
3. In accordance with Title 10 of the Code of Federal Regulations, Part 50, 131 Appendix I, (10CFR50 Appendix I), dose to a member of the public (from 1 ,

133 3 14 1 , H , C , and all radionuclides in particulate form with radioactive half-lives greater than eight (8) days) in gaseous effluents released to areas at and beyond the site boundary shall be limited to the following values:

a. Less than or equal to 7.5 mRem to any organ, during any calendar quarter.
b. Less than or equal to 15 mRem to any organ, during any calendar year.

B. Liquid Effluents

1. The concentration of radioactive material released in liquid effluents to unrestricted areas shall be limited to the values provided within Section 5.5.4.b of Station Technical Specifications for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.0E-04 µCi/ml total activity.
2. The dose or dose commitment to a member of the public from radioactive materials in liquid effluents released to unrestricted areas shall be limited to:
a. Less than or equal to 1.5 mRem to the total body and less than or equal to 5 mRem to any organ during any calendar quarter.
b. Less than or equal to 3 mRem to the total body and less than or equal to 10 mRem to any organ during any calendar year.

II. AVERAGE ENERGY The CPS ODCM limits the dose equivalent rates due to the release of fission and activation gases to less than or equal to 500 mRem per year to the total body and less than or equal to 3,000 mRem per year to the skin. These limits are based on dose calculations using actual isotopic concentrations from our effluent release streams and not based 1,1pon the gross count rate from our monitoring systems. Therefore, the average beta and gamma energies (E) for gaseous effluents as described in Regulatory Guide 1.21, "Measuring, Evaluating, and

'Page 13 of 162

\.

Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Nuclear Power Plants", are not applicable.

Ill. MEASUREMENT AND APPROXIMATIONS OF TOTAL RADIOACTIVITY A. Fission and Activation Gases

1. Gas samples are collected weekly and are counted on a high purity germanium detector (HPGe) for principal gamma emitters. The HVAC and SGTS release points are continuously monitored and the-average release flow rates for each release point are used to calculate the total activity released during a given time period.
2. Tritium is also collected by passing a known volume of. the sample stream through a gas washer containing a known quantity of demineralized water. The collected samples are distilled and analyzed by liquid scintillation. The tritium released was calculated for each release point from the measured tritium concentration, the volume of the sample, the tritium collection efficiency, and the respective stack exhaust flow rates.
3. Carbon-14 release values were estimated using the methodology included in the EPRI Technical Report 1021106, using the 2016 Clinton Power Station specific parameters of normalized Carbon-14 production rate of 5.049 Ci/GWt-yr, a gaseous release fraction of 0.99, a Carbon-14 carbon dioxide fraction of 0.95, a reactor power rating of 3473 MWt, and equivalent full power operation of 342.23days.

B. Iodines Iodine is continuously collected on a silver zeolite cartridge filter via an isokinetic sampling assembly from each release point. Filters are normally exchanged once per week and then analyzed on an HPGe system. The average flow rates for each release point are averaged over the duration of the sampling period and these results - along with specific isotopic concentrations - are then used to determine the total activity released during the time period in question.

C. Particulates Particulates are continuously collected on a filter paper via an isokinetic sampling assembly on each release point. Filters are normally exchanged once per week and then analyzed on an HPGe system. The average flow rates for.each release point are averaged over the duration of the sampling period and these results - along with specific isotopic concentrations - are then used to determine the total activity released during the time period in question.

D. Liquid Effluents Page 14 of 162

Each tank of liquid. radwaste is recirculat~d for at least two (2) tank volumes, sampled and analyzed for principal gamma emitters prior to release. Each sample tank is recirculated for a sufficient amount of time prior to sampling ensuring that a representative sample is obtained~ . Samples are then analyzed on an HPGe system and liquid release permits are generated based upon the values obtained from the isotopic analysis and the most recent 3 89 90 values for H , gross alpha, Fess, Sr and Sr

  • An aliquot based on release volume is saved and added to composite containers. The concentrations of composited isotopes and the volumes of the re!eases associated with these composites establish the proportional relationships that are then utilized for calculating the total activity rel.eased for these isotopes.

IV. DESCRIPTION OF ERROR ESTIMATES Estimates of measurement and analytical error for gaseous and liquid effluents are calculated as follows:

where: Er= total percent error, and E1 ... EN = percent error due to calibration standards, laboratory analysis, instruments, sample flow, etc.

Page 15 of 162

SECTION 4 RADIOACTIVE EFFLUENT DATA TABLE 1 Gaseous Effluents - Summation Of All Releases Data Period: January 01, 2016 - December 31, 2016 Continuous Mixed Mode

. ,. .. '~~'

    • uni(s .. Qualter 1"' . . *Quarf~t: 2*

,". *~

  • 1 ouader'3 . , Qu~rte!:4 l ES~. !()~.at*

Error,%

A. Fission & Activation Gases

1. Total Release Ci 5.73E+OO 5.20E+OO 7.29E+OO 9.12E+OO 30
2. Average release rate

µCi/sec for period 9.lSE-01 1.08E+OO 9.93E-01 2.70E-01

3. Percent of ODCM Limit B. Iodines
1. Total lodine-131 Ci 1.03E-05 1.49E-05 1.57E-06 O.OOE+OO 31
2. Average release rate

µCi/sec for period 1.44E-06 1.95E-06 2.09E-07 O.OOE+OO

3. Percent of ODCM Limit * * * *
c. Particulates
1. Particulates with Ci 24 half-lives >8 days 3.89E-02 6.61E-05 O.OOE+OO O.OOE+OO
2. Average release rate

µCi/sec for period 5.47E-03 9.99E-06 O.OOE+OO O.OOE+OO

3. Percent of ODCM Limit * * *
4. Gross alpha Ci O.OOOE+Ol O.OOOE+Ol O.OOOE+Ol O.OOOE+Ol radioactivity D. Tritium
1. Total Release Ci 5.69E+OO 4.SOE+OO 4.02E+OO 5.40E+OO 21
2. Average release rate

µCi/sec for period 8.36E-01 8.0lE-01 5.70E-01 6.76E-01

3. Percent of ODCM Limit E. Carbon-14
1. Total Release Ci 4.322E+OO 3.580E+OO 4.180E+OO 4.360E+OO
2. Average release

µCi/sec 5.561E-01 5.561E-01 5.561E-01 5.560E-01 Rate for period

  • Applicable limits are expressed in terms of dose. See Tables lA and lB of this report.

Page 16 of 162

TABLE 1A Air Doses Due to Gaseous Releases Doses per Quarter Typeof.. ODCM **. l~t. \ %of. :zrd_  % Qf* 3*d'_;' .* ; %of 4th' ...  %*of

  • Radiation . limit Qua'rter uinit
  • Quarter*. Limit Qu~rter Limit Quarter Lim if 5 2.65E- 5.31E- 2.41E- 4.82E- 3.38E- 6.75E- 9.79E- 1.96E-Gamma mRad 04 03 04 03 04 03 05 03 10 9.36E- 9.36E- 8.49E- 8.49E- 1.19E- 1.19E- 3.45E- 3.45E-Beta mRad 05 04 05 04 04 03 05 04 Doses per Year

. Type ofRadiatiori k<< .

  • OO'CM limit .. ***Year <<-,,
  • > *'-%.oflimit .**

Gamma 10 mRad 9.42-04 9.42E-03 Beta 20 mRad 3.32E-04 1.66E-03 TABLE 1B Doses to a Member of the Public Due to Radioiodines, Tritium, Carbon-14, and Particulates in Gaseous Releases Doses per Quarter

  • .*Type_ of. 't>DCM . .j*t. %of. 2~~ 3~d- . .4~h-

.%of . '%of

..  %-of Organ
*.*
  • umit *ou~l'.~er ur:n1t:. .:. Q.'uarter*: *'.limit*

Quartet:" . umit ** Qu~rter*. Ln1ut* .... :

1.49E- 1.99E- 1.23E- 1.64E- 1.44E- 1.92E- 1.50E- 2.00E-Bone 7.5 02 01 02 01 02 01 02 01 9.89E- 1.31E- 8.09E- 1.08E- 6.61E- 8.81E- 8.15E- 1.09E-Liver 7.5 05 03 05 03 05 04 05 03 2.73E- 3.64E- 2.57E- 3.43E- 9.47E- 1.26E- 3.07E- 4.09E-TBody 7.5 03 02 03 02 03 01 03 02 1.18E- 1.58E- 1.02E- 1.36E- 6.62E- 8.83E- 8.15E- 1.09E-Thyroid 7.5 04 03 04 03 05 04 05 03 9.83E- 1.31E- 7.98E- 1.06E- 6.61E- 8.82E- 8.15E- 1.09E-Kidney 7.5 05 03 05 03 05 04 05 03 9.82E- 1.31E- 8.0lE- 1.07E- 6.61E- 8.82E- 8.15E- 1.09E-Lung 7.5 05 03 05 03 05 04 05 03 1.0lE- 1.34E- 8.90E- 1.19E- 6.61E- 8.82E- 8.15E- 1.09E-GI LLI 7.5 04 03 05 03 05 04 05 03 Doses per Year Type of Organ ODCM Limit Dose *.**  %:of.Limit Bone 15 5.66E-02 3.77E-01 Liver 15 3.27E-04 2.18E-03 TBody 15 1.78E-02 1.19E-01 Thyroid 15 3.68E-04 2.46E-03 Kidney 15 3.26E-04 2.17E-03 Lung 15 3.26E-04 2.17E-03 GI LLI 15 3.38E-04 2.25E-03 Page 17 of 162

TABLE 2 Clinton Power Station Gaseous Effluents - Nuclides Released YEAR: 2016 Mixed Mode Release x Elevated Release I Continuous Mode x Ground-Level Release Batch Mode Quarter , Quarter Quarter Qua rte[

Unit.s

,' 0 p 1121 i.21. '.,, 3[~];.

~ 9>'t""

4!21 111 A. Fission Gas*es Ar-41 Ci 5.73E+OO 5.20E+OO 7.29E+OO 9.12E+OO Total for Period Ci 5.73E+OO 5.20E+OO 7.29E+OO 9.12E+OO 111 B. Iodines 1131 Ci 5.16E-06 1.37E-05 1.57E-06 O.OOE+OO 1133 5.18E-06 Ci 1.24E-06 O.OOE+OO O.OOE+OO Total for Period Ci 1.03E-05 1.49E-05 1.57E-06 O.OOE+OO 111

c. Particulates Co so Ci 2.74E-06 1.71E-05 O.OOE+OO O.OOE+OO 54 Mn Ci 2.34E-05 4.90E-05 O.OOE+OO O.OOE+OO Cs Ba Ci 3.89E-02 O.OOE+OO O.OOE+OO O.OOE+OO Gross Alpha Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Total for Period Ci 3.89E-02 6.61E-05 O.OOE+OO O.OOE+OO 111 D. Tritium Total for Period Ci 5.69E+OO 4.SSE+OO 4.02E+OO 5.40E+OO 111 E. Carbon-14 Total for Period Ci 4.32E+OO 3.58E+OO 4.18E+OO 4.36E+OO

[11 Ten (10) times the values found in 10CFR20 Appendix B, Table 2, Column 1 are used for all Effluent Concentration Limit (ECL) calculations. For dissolved and entrained noble gases, the concentration is limited to 2.00E-04 µCi/cc total activity.

[2]

The lower the value of the actual sample activity - with respect to background activity

- the greater the counting error. Proportionally, large errors are reported for the various components of CPS gaseous effluents because of their consistent low sample activity.

An entry of O.OOE+01 indicates that the Minimum Detectable Activity (MDA) concentration of the radionuclide was below the LLD value listed in Table 3.

Page 18 of 162

TABLE 3 Radioactive Gaseous Waste LLD Values Principal Gamma Emitters,

i.ooE-04

[Noble Gases] b,c 3c H  ::;;i.ooE-06

i.oOE-12
i.ooE-10 Principal Gamma Emitters,

[Particulates] b,e S r 89 , s r 90 g Gross Alphaf Table 3 Notations a

The Lower Limit of Detection (LLD) as defined for purposes of these specifications, as an "a priori" determination of the smallest concentration of radioactive material in a sample that will yield a net count - above system background - that will .be detected with a 95%

probability and with a low (5%) probability of incorrectly concluding that a blank observation represents a "real" signal.

For a particular measurement system, which may include radiochemical separation:

4.66*sb LLD E

  • V
  • 2 .2 2 x 1 0 6
  • Y
  • e - ..ttit Where:

LLD is the "a priori" lower limit of detection as defined above, as µCi per unit mass or volume, Page 19 of 162

Table 3 Notations (continued) sb is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate, in counts per minute (cpm),

Eis the counting efficiency, in counts per disintegration, Vis the sample size in units of mass or volume, 2.22E+06 is the number of disintegrations per minute (dpm) per microcurie, Y is the fractional radiochemical yield, when applicable,

/..,is the radioactive decay constant for the particular radionuclide (sec-1) and L1t for plant effluents is the elapsed tinie between the midpoint of sample collection and the time of counting (sec).

Typical values of E, V, Y, and l1t should be used in the calculation.

The LLD is defined as an a priori (before the fact) limit representing the capability of a measurement system and not as an a posteriori (after the fact) limit for a particular measurement.

bThe principal gamma emitters for which the LLD specification applies include the 87 88 133 133 135 138 following radionuclides: Kr , Kr , Xe , Xe m, Xe , and Xe in noble gas releases and 54 5 58 60 65 131 134 137 141 144 Mn , Fe g, Co , Co , Zn , Mogg' 1 , Cs , Cs , Ce , and Ce in iodine and particulate releases. This list does not mean that only these nuclides are to be considered. Other gamma peaks that are identifiable - together with those of the above nuclides - shall also be analyzed and reported in the Radioactive Effluent Release Report.

c Weekly grab sample and analysis d ' .

Continuous charcoal sample analyzed weekly e

Continuous particulate sample analyzed weekly tcomposite particulate sample analyzed monthly gComposite particulate sample analyzed quarterly Page 20 of 162

TABLE 4 Waterborne Effluents - Summation Of All Releases Data Period: January 01, 2016 - December 31, 2016 There were zero (0) liquid radwaste releases from CPS in 2016.

.Esf...

,**;Quarte.r . , Qyar~er

.* * '" Qua*rter Quarh~i* *.Total * *

" ... . Units. '.

' ;:;:;3\,.: '..*'.

    • *,~  ; . . J* *.

,,;~/ 1:* ,:, ';:2;~ ,* *~' '* *Error*.%.

I ....

A. Fission&'.Activation Products ' *. . ':'  :

1. Total Release Ci O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol N/A Average diluted
2. concentration µCi/ml O.OOE+Ol O.OOE+Ol O.OOE+Ol 0;00E+01 during period Percent of ODCM ' '
3.  % N/A N/A N/A N/A Limit B. Tritium
1. Total Release Ci O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol N/A Average diluted
2. concentration µCi/ml O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol during period Percent of ODCM
3.  % N/A N/A N/A N/A Limit
c. Dissolved and Entrained .Gases . '
1. Total Release Ci O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol N/A Average diluted
2. concentration µCi/ml O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol during period Percent of ODCM
3.  % N/A N/A N/A N/A Limit D. Gro~s Alpha Radio~ctivit:y* *.

Gross alpha Ci O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol N/A radioactivity E. \lolume of Waste.Released (prior to Dilution)  : ' '

Volume of Waste Released (prior to Liters O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol N/A Dilution)

F. Volume of dilution water used during period Volume of dilution water used during Liters O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol N/A period Page 21of162

TABLE 5 Waterborne Effluents - Nuclides Released 111 Data Period: January 01, 2016 - December 31, 2016 All Modes There were zero (0) liquid radwaste releases from CPS iri 2016.

I Continuous Mode I Batch Mode x I Nuclide Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 A. Tritium Ci O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol I*

B. Fission and Activation Products Srsg Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Srgo Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Cs134 Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Cs137 Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 1131 Ci 0.00E+Ol O.OOE+01 O.OOE+01 O.OOE+Ol Coss Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Co so Ci O.OOE+01 O.OOE+01 O.OOE+Ol 0.00E+Ol Fesg Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+Ol Znss Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+Ol Mns4 Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Crs1 Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Zr/Nbg 5 Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Mogg Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Tc-99m Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 140 Ba/La Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Ce141 Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Ce144 Ci O.OOE+01 O.OOE+01 O.OOE+Ol O.OOE+01 Total Ci O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol C. Dissolved and Entrained Noble Gases I Xe 133 Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 I Xe 135 Ci O.OOE+01 O.OOE+01 O.OOE+01 O.OOE+01 Total Ci O.OOE+Ol O.OOE+Ol O.OOE+Ol O.OOE+Ol 111 A value corresponding to ten times the values found in 10CFR20 Appendix B, Table 2, Column 2 is used for all Effluent Concentration Limit (ECL) calculations. For dissolved and entrained noble gases, the concentration is limited to 2.00E-04 µCi/ml total activity.

Page 22 of 162

TABLE 6 Radioactive Liquid Waste LLD Values Lowi!r*limit.-of*~Detecti()fr* (LLD) a

    • * (µCi/ml)' .** ,

Principal Gamma Emitters b  :::;;5.00E-07

i.ooE-06 Dissolved and Entrained Gases
s;i.ooE-05

{Gamma Emitters) c

i.ooE-05 Gross Alpha
:;;i.ooE-07 S r 89 , s r 90  :::;;5.00E-08 Fess  :::;;i.ooE-06 Table 6 Notations a

The Lower Limit of Detection (LLD) as defined for purposes of these .specifications, as an "a priori" determination of the smallest concentration of radioactive material in a sample that will yield a net count - above system background - that will be detected with a 95%

probability and with only a 5% probability of falsely concluding that a blank observation represents a "real" signal.

For a particular measurement system, which may include radiochemical separation:

4.66*sh LLD E

  • V
  • 2 .2 2 x 1 0 6
  • Y
  • e - AM Where:

LLD is the "a priori" lower limit of detection as defined above, as µCi per unit mass or volume, sb is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate, in counts per minute (cpm),

Page 23 of 162

I Table 6 Notations (continued)

E is the counting efficiency, as counts per disintegration, Vis the sample size in units of mass or volume, 2.22E+06 is the number of disintegrations per minute (dpm) per microcurie, Y is the fractional radiochemical yield, when applicable,

/...,is the radioactive decay constant for the particular radionuclide (sec-1) and dt for plant effluents is the elapsed time between the midpoint of sample collection and the time of counting (sec).

Typical values of E, V, Y, and A.t should be used in the calculation.

The LLD is defined as an a priori (before the fact) limit representing the capability of a measurement system and not as an a posteriori (after the fact, MDA) limit for a particular measurement.

b The principal gamma emitters for which the LLD requirement applies include the 54 59 58 60 65 99 134 137 141 144 following radionuclides: Mn , Fe , Co , Co , Zn , Mo , Cs , Cs , Ce , and Ce shall also be measured, but with an LLD of 5.0E-06. This list does not mean that only these nuclides are detected and reported. Other gamma peaks that are measurable - together with those of the above nuclides - shall also be analyzed and reported in the Radioactive Effluent Release Report.

133 135 138 85 87 88 cDissolved and entrained gases are: Xe , Xe , Xe , Kr m, Kr and Kr .

Page 24 of 162

BATCH RELEASES There were ~era (0) liquid radwaste releases from CPS in 2016.

A. Batch Liquid Releases: 2016

1. Number of batch releases: 0
2. Total time period for batch releases: N/A
3. Maximum time period for batch release: N/A
4. Average time period for batch release: N/A
5. Minimum time period for batch release: N/A
6. Average stream flow during periods of rele.ase: N/A
7. Total waste volume: N/A
8. Total' dilution volume: N/A B. Batch Gaseous Releases: 2016
1. Number of batch releases: 0
2. Total time period for batch releases: N/A
3. Maximum time period for batch release: N/A
4. Average time period for batch release N/A
5. Minimum time period for batch release: N/A Page 25 of 162

ABNORMAL RELEASES Information concerning abnormal radioactive liquid and gaseous releases is presented below for the year 2016. There were no abnormal or unplanned liquid or gaseous releases from CPS in 2016.

Liquid Releases:

Number of Abnormal Liquid Releases: Zero (0)

Activity Released [Ci]

Nuclides* . A_ctivity[C:iJ '.

N/A 0.0 N/A 0.0 N/A 0.0 N/A 0.0 N/A 0.0 N/A 0.0 Total 0.0 Gaseous Releases:

Number of Abnormal Gaseous Releases: Zero (0)

Activity Released [Ci]

. : , :'.Nuclides :_ ',

", Actlylty*[Ci] , ...*. **

N/A 0.0 N/A 0.0 N/A 0.0 N/A 0.0 N/A 0.0 N/A 0.0 Total 0.0 Page 26 of 162

SECTION 5 SOLID WASTE DISPOSAL INFORMATION During this reporting period -January 01, 2016 through December 31, 2016 - there were eighteen (18) radioactive waste shipments and zero (O) irradiated fuel shipments from CPS. In addition, the CPS ODCM requires reporting of the following information for solid waste shipped offsite during the above reporting period:

3 3

1. Container volume: Class A Waste: l.SOE+04 ft /Class B Waste: 0.0 ft /Class C Waste: 0.0 ft3 This total includes Dry Active Waste (DAW), resins, filter sludges, evaporator bottoms and other low' level waste such as mixed waste.
2. Total .curie quantity: Class A Waste was 180 curies and Class B Waste was 0.0 curies (determined by dose-to-curie and sample concentration methodology estimates) and Class C Waste was 0.0 curies in 2016.
3. Principal radionuclides: See A.2 for listing of measured radionuclides.
4. Source of waste and processing employed: Resins, .filter sludges and evaporator bottoms dewatered, non-compacted dry active waste and mixed waste.
5. Type of container: General Containers.
6. Solidification agent or absorbent: None.

Page 27 of 162

Table 7 Solid Waste and Irradiated Fuel Shipments A.1 Solid Waste Shipped Offsite for Burial or Disposal: [NOT irradiated fuel]

a. 25 m3 b.
  • Drv.~o*~.P:~2tab1iiwaite, ..... .. 3.71E+a2 25 cootamina.ted *eqi,jipment/ efc ..
., ...:** Ci a.8a8 m3 a Irradiated* components,
c.  :*_, 25
  • .control rods~:etc. **,

. -'"';',,<. / , *.**..

Ci a m3 3.3aE+aa 25

  • Total curie quantity and principal radionuclides were determined by measurements.

A.2 Estimate of major nuclide composition (by type of waste)

1. Spent resins, filters, evaporator bottoms, etc.

. . .: ..~irfie:s ... * \.*..*.

A Mns4 8.4 15.1

.. Fess 79.9 143 Co6o 8.5 15.2 zn65 ' 1.4 2.5 4

B Mns a.a a.a Fess a.a a.a 60 Co a.a a.a 65 Zn a.a a.a

2. Dry compactable waste, contaminated equipment, etc.

A Mns4 11.9 a.a1 Fess 56.6 a.46 Co6o 27.2 a.22 Page 28 of 162

Table 7 (continued)

Solid Waste and Irradiated Fuel Shipments

3. Irradiated Components A Mns 4 0.0 0.0 Fess 0.0 0.0 60 Co 0.0 0.0
  • . '. '\'"*.: '* zn6S

. *..,,,;': ,.,_* 0.0 0.0 Other 0.0 0.0 Mns 4 0.0 0.0 Fess 0.0 0.0 Co so 0.0 0.0 zn6S 0.0 0.0 Other 0.0 0.0 W~stfi!:(:lass .*  :..CiJrfes c Mns4 0.0 0.0 Fess 0.0 0.0

.* .*:** *<> '. Co so 0.0 0.0 zn6S 0.0 0.0 Other 0.0 0.0 A.3 Solid Waste Disposition January - December 2016

,~ :i\J~u mb~f~gf:S~-iPm.~nt'~~-~  :.._'.M9.cfo* 9lJf~i{$p:orta.tf9.rii:* .::~::; .. *. * :*,.**,. *)~~rt>~~tina~l9rr~f;~~;* .:<.*.* ..*._ *..*:,;:J; Energy Solutions--Clive, UT Disposal 9 Hittman Transport Facility 9 Hittman Transport Energy Solutions--Bear Creek; TN B. Irradiated Fuel Shipments Disposition January - December 2016 0 N/A N/A Page 29 of 162

SECTION 6 DOSE MEASUREMENTS AND ASSESSMENTS This section of the Annual Effluent Release Report provides the dose received by receptors around CPS from gaseous and liquid effluents. The dose to the receptor that would have received the highest dose in each sector (defined as the Critical Receptor for that sector) is listed within this report. This section also provides the d.ose to individuals who were inside the Site Boundary. This section also summarizes CPS's compliance with the requirements found within 49CFR190.

The 2016 maximum expected annual dose from Carbon-14 released from CPS has been calculated using the methodology included in the EPRI Technical Report 1021106 using the maximum gross thermal capacity maintained for 342.23 days of equivalent full power operation.

The assumptions used in determining dose values are as foliows:

  • All receptors within a five (5) mile radius are included in the Annual Land Use Census .. Thi.s Annual Census determines what dose pathways are present as well as the distance of each receptor from the site.
  • The annual average meteorological data for 2016 was used in conjunction with the Annual Land Use Census to determine the dose to each receptor within five (5) miles.
  • The doses for each receptor from each sector were determined using methodologies given in the ODCM.
  • The activity used in these assessments is the total activity released by CPS for the year 2016 including radionuclides with half-lives less than eight (8) days and when dose pathway factors were available.
  • The occupancy factor was taken into consideration by calculating the dose to individuals using areas inside the Site Boundary in non-residential areas. The occupancy factor is determined by dividing the number of hour[s] of occupancy per year (taken from the ODCM) and dividing that value by the total number of hour[s] per year.
  • Dose to individuals using areas inside the Site Boundary (that are not residences) was calculated using the Ground Plane and Inhalation pathways.

Page 30 of 162

TABLE 8 Maximum Offsite Doses and Dose Commitments To Members of the Public in Each Sector Data Period: January 01, 2016 - December 31, 2016 This table illustrates the dose that a member from the public would most likely be exposed to from radioactive effluents in each sector from CPS. These values represent the maximum dose likely to expose a member of the public in each sector.

'*'*,** . **  :'.* .*:*,. "/': ,"" ..:.* .. ". *:-._** .* .... *1.'!',_, ;. *: ... "' ... *: ."'. ;1;*** .. *;::'-'*;*"" .......,; ..:,.-.. ;.* " .,.

s;~-~iiir c>is(~nce* 'Pathw~ys; Organ 1 ~g~* . Organ Skin:..**..!~~ayl ::' ::~amma . B:~ta ":,~rgan '  ;~~~~/

' . .!~111) . ' *.. ' .. ' .. .  :.* . '.* *, ' . *J.

N 1.50 GP, I, M, V B A 3.13E-05 3.66E-05 3.67E-04 1.13E-03 3.98E-04 O.OOE+Ol O.OOE+Ol NNE 1.50 GP, I, V B A 4.35E-05 5.09E-05 2.24E-05 1.39E-03 4.92E-04 NE 2.07 GP, I, V B A 1.39E-05 1.62E-05 1.74E-04 5.87E-04 2.07E-04 ENE 2.86 GP, I, V B A 7.64E-06 8.93E-06 1.24E-04 4.28E-04 1.51E-04

.. E* 1.67 GP, I, V B A 2.63E-05 3.0SE-05 2.17E-04 6.98E-04 2.46E-04 ESE 5.14 GP, I, V B A 7.57E-06 8.84E-06 1.38E-04 4.BOE-04 1.69E-04 SE 4.44 GP, I, V B A 8.15E-06 9.53E-06 1.24E-04 4.25E-04 1.50E-04 SSE 2.90 GP, I B A 6.59E-06 7.73E~06 3.83E-05 3.26E-04 1.15E-04 S 4.78 GP, I, M B A 3.86E-06 4.52E-06 3.67E-05 2.86E-04 9.44E-05 SSW 4.68 GP, I B C 2.17E-06 2.53E-06 2.28E-05 2.37E-04 8.36E-05 SW 1.17 GP, I, V B A 1.54E-05 1.BlE-05 1.62E-04 5.37E-04 1.89E-04 WSW 3.62 GP, I, M, V B C 3.03E-06 3.51E-06 1.llE-04 2.60E-04 9.lSE-05 W 1.95 GP, I, V B C 5.70E-06 6.64E-06 1.15E-04 2.76E-04 9.72E-05 WNW 2.63 GP, I, V B A 4.46E-06 5.20E-06 9.73E-05 3.41E-04 1.20E-04 NW 2.65 GP, I B A 7.40E-06 8.67E-06 4.63E-05 3.99E-04 1.41E-04 NNW 2.05 GP, I, M, V B A 1.53E-05 1.79E-05 2.32E-04 7.26E-04 2.56E-04 Key for Table 8 Pathways Organ Age GP= Ground Plane B =Bone A= Adult I= Inhalation T =Teen M =Meat I= Infant V =Vegetables C =Child 11

[ There were zero (0) liquid radwaste releases from CPS in 2016. All doses were within all regulatory limits, including limits from 40CFR190.

Page 31 of 162

COMPLIANCE WITH 40CFR190 REQUIREMENTS Dosimeter of Legal Records [DLR] are stationed around CPS to measure the ambient gamma radiation field. Monitoring stations are placed near the site boundary and approximately five (5) miles from the reactor, in locations representing the sixteen (16) compass sectors. Other locations are chosen to measure the radiation field at places of special interest such as nearby residences, meeting places and population centers. Control sites are located further than ten (10) miles from the site, in areas that should not be affected by plant operations. The results from the TLDs are reported in the Annual Radiological Environmental Operating Report (AREOR). The results from this effort indicated no excess dose to offsite areas.

Additionally, NUREG-0543, METHODS FOR DEMONSTRATING LWR COMPLIANCE WITH THE EPA URANIUM FUEL CYCLE STANDARD (40 CFR PART 190) states in section IV, "As long as a nuclear plant site operates at a level below the Appendix I reporting requirements, no extra analysis is required to demonstrate compliance with 40 CFR Part 190." The organ and whole body doses reported in Table 8 are determined using 10 CFR 50 Appendix I methodology. The doses reported are well below the limits of Appendix I.

DOSE TO MEMBERS OF THE PUBLIC WITHIN THE SITE BOUNDARY CPS Offsite Dose Calculation Manual section 6.2 requires that the Radioactive Effluent Release Report include an assessment of the radiation doses from radioactive liquids and gaseous effluents to MEMBERS OF THE PUBLIC due to their activities inside the SITE BOUNDARY. Within the CPS site boundary there are seven areas that are open to members of the public as identified by CPS ODCM Table 5-3 (see Figure 4):

The Department of Natural Resources Recreation Area at 1.287 kilometers (0.8 miles) in the ESE sector A road at 0.495 kilometers (0.3 miles) in the SE sector A residence at 2.736 kilometers (1.7 miles) in the SSE sector A residence at 1.219 kilometers (0.8 miles) in the SW sector Agricultural acreage at 1.372 kilometers (0.9 miles) in the SSW sector A residence at 2.414 kilometers (1.5 miles) in the WSW sector A portion of Clinton Lake at 0.335 kilometers (0.2 miles) in the NW sector At all of the above locations, the plume,* inhalation and ground-plane exposure pathways are used for dose calculations. The 2016 Annual Land Use Census identified no other exposure pathways. All dose calculations were performed using the methodology contained in the CPS ODCM, with the exception of dose due to C-14, which was calculated using methodology included in the EPRI Technical Report 1021106.

Page 32 of 162

FIGURE 4 AREAS WITHIN THE CPS SITE BOUNDARY OPEN TO MEMBERS OF THE PUBLIC NOTES:

MAROA 1. Road 0.3 miles in SE Sector

2. Agricultural acreage 0.9 miles in SSW Sector
3. Clinton Lake 0.2 miles in the NW Sector
4. Department of Natural Resources Recreation Area 0.8 miles in ESE Sector
5. Residence 0.8 miles in SW Sector
6. Residence 1.5 miles in WSW Sector
7. Residence 1.7 miles in SSE Sector MACON CO. WELDON TO CHAMPAIGN Page 33 of 162

TABLE 9 CALCULATED DOSES TO MEMBERS OF THE PUBLIC DURING USE OF THE DEPARTMENT OF NATURAL RESOURCES RECREATION AREA IN THE EAST-SOUTHEAST SECTOR WITHIN THE CPS SITE BOUNDARY Data Period: January 01, 2016 - December 31, 2016 DESCRIPTION DOSE UNITS Total Body Dose Rate {Noble Gases) 2.99E-04 mRem/year Skin Dose Rate (Noble Gases)

****--.;-*--* "~, '" *~ .*--*-**,** --,-*--*-****~*~---

4.37E-04

..... . '!l~~m/y~ar Gamma Air Dose l.25E-03 mRad Beta Air Dose 4.41E-04 mRad Total Body Dose (Particulates) l.74E-04 mRem Skin Dose (Particulates) [ll 6.14E-05 mRem

[1] DOSE includes the dose values resulting from the release of iodines, particulates (with half lives >8 days) tritium, and carbon-14 in gaseous effluents.

Highest Organ Dose by Age Group:

Adult Bone 3.80E-04 mRem Teen Bone 5.38E-04 mRem Child Bone NA 121 mRem 121 Infant Bone NA mRem

[2] Dose calculated only for the age groups likely to be in the field.

Page 34 of 162

TABLE 10 CALCULATED DOSES TO MEMBERS OF THE PUBLIC DURING USE OF THE ROAD IN THE SOUTHEAST SECTOR WITHIN THE CPS SITE BOUNDARY Data Period: January 01, 2016 -December 31, 2016 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 8.62E-05 mRem/year

\

Skin*u*- Dose Rate (Noble Gases)

      • ~** r-*** *. ,*-******"*' -** * **** ***-'---*

1.26E-04 m_~e~/ye?r

~-- *">-*-_.. . . _ ' ~-- - * - -- - * --- **-**

Gamma Air Dose 3.27E-03 mRad Beta Air Dose 1.lSE-03 mRad Total Body Dose (Particulates) 4.73E-04 mRem Skin Dose (Particulates) [lJ 1.82E-04 mRem

[1] DOSE includes the dose values resulting from the release of iodines, particulates (with half lives >8 days) tritium, and carbon-14 in gaseous effluents.

Highest Organ Dose by Age Group:

Child Bone 2.32E-04 mRem Infant Bone 1.73E-04 mRem Teen Bone 1.70E-04 mRem Adult Bone 1.20E-04 mRem Page 35 of 162

TABLE 11 CALCULATED DOSES FOR THE RESIDENTS IN THE SOUTH-SOUTHEAST SECTOR WITHIN THE CPS SITE BOUNDARY Data Period: January 01, 2016 - December 31, 2016 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases)* 3.18E-04 mRem/year S~Jn_ Dos~. R.~~e !!.'JC>.b.l~-~~_sesJ 4.65E-04 i:t.:!R~rTl/Ye?.r. __

Gamma Air Dose 3.35E-04 m Rad Beta Air Dose 1.18E-04 mRad Total Body Dose (Particulates) 3.98E-05 mRem Skin Dose (Particulates) lll 8.37E-06 mRem

[1] DOSE includes the dose values resulting from the release of iodines, particulates (with half lives >8 days) tritium, and carbon-14 in gaseous effluents.

Highest Organ Dose by Age Group:

Teen Bone 1.13E-04 mRem Adult Bone 7.46E-04 mRem 121 Child Bone N/A mRem 121 Infant Bone N/A mRem

[2] Dose calculated only for the age groups likely to be in the field.

Page 36 of 162

TABLE 12 CALCULATED DOSES FOR THE RESIDENTS IN THE SOUTHWEST SECTOR WITHIN THE CPS SITE BOUNDARY Data Period: January 01, 2016 - December 31, 2016 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 4.90E-04 mRem/year Skin Dose Rate (Noble Gases) 7.16E-04 mRem/year c_~::=::~*-=~~~~:=~~:.=.-.~*;:::z.::._: =~:~. ~-;.~~*~==-~=*~-=~:~=:::.*,,:,~:,.=:::~==*=*~~-=.::::~=~=~=~:::~:~::=:=-~=::=::::~~:*.=::~=;:*~:;

Gamma Air Dose 5.16E-04 mRad Beta Air Dose l.82E-04 mRad Total Body Dose (Particulates) 6.SOE-05 mRem Skin Dose (Particulates) 111 l.73E-05 mRem

[1] DOSE includes the dose values resulting from the release of iodines, particulates (with half lives >8 days) tritium, and carbon-14 in gaseous effluents.

Highest Organ Dose by Age Group:

Adult Bone 6.06E-04 mRem 121 mRem Teen Bone N/A 121 mRem Child Bone N/A 121 mRem Infant Bone N/A

[2] Dose calculated only for the age groups likely to be in the field.

Page 37 of 162

TABLE 13 CALCULATED DOSES TO MEMBERS OF THE PUBLIC DURING USE OF THE AGRICULTURAL ACREAGE IN THE SOUTH-SOUTHWEST SECTOR WITHIN THE CPS SITE BOUNDARY Data Period: January 01, 2016 - December 31, 2016 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 4.88E-05 mRem/year

- . .... '" Rate (Noble Gases)

Skin...Dose

, """ "" ~ """"'" '\ ~ "'.'*- " ,.,,,.

7.13E-05 -~~~rl'l/X~~-~ .*. . ..


' - '-~ *' H

_,;~~

Gamma Air Dose 4.66E-04 mRad Beta Air Dose 1.64E-04 mRad Total Body Dose (Particulates) 6.16E-05 mRem Skin Dose (Particulates) [lJ 1.90E-05 mRem

[1] DOSE includes the dose values resulting from the release of iodines, particulates (with half lives >8 days) tritium, and carbon-14 in gaseous effluents.

Highest Organ Dose by Age Group:

Adult Bone 5.47E-04 mRem Teen Bone 7.82E-4 mRem Child Bone N/A (21 mRem Infant Bone N/A (21 mRem

[2] Dose calculated only for the age groups likely to be in the field.

Page 38 of 162

TABLE 14 CALCULATED DOSES FOR THE RESIDENTS IN THE WEST-SOUTHWEST SECTOR WITHIN THE CPS SITE BOUNDARY Data Period: January 01, 2016 - December 31, 2016 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 2.57E-04 mRem/year Skin Dose Rate (Noble Gases) 3.76E-04 mRem/year c_:~:.:::-::;~~:::.:~==:::_=~:.=-:~.~::: ~::~~*.:-~~~:.::_~2**::.:::~:~~~,~~~*~~:-~*-:~:*:; :~::~:::-=~~-.~=~:~=:~=~:::.: ?E:~~~:::::::---::r.::~::*::~:::~~r~.::_-J Gamma Air Dose 2.70E-04 mRad Beta Air Dose 9.SSE-05 mRad Total Body Dose (Particulates) 3.13E-04 mRem Skin Dose (Particulates) 111 5.72E-06 mRem

[1] DOSE includes the dose values resulting from the release of iodines, particulates (with half lives >8 days) tritium, and carbon-14 in gaseous effluents.

Highest Organ Dose by Age Group:

Adult Bone 3.18E-04 mRem 121 Teen Bone N/A mRem 121 Child Bone N/A mRem 121 Infant Bone N/A mRem

[2] Dose calculated only for the age groups likely to be in the field.

Page 39 of 162

TABLE 15 CALCULATED DOSES TO MEMBERS OF THE PUBLIC DURING USE OF CLINTON LAKE IN THE NORTHWEST SECTOR WITHIN THE CPS SITE BOUNDARY Data Period: January 01, 2016 - December 31, 2016 DESCRIPTION DOSE UNITS Total Body Dose Rate (Noble Gases) 6.0SE-04 mRem/year

. Ski!1 D~s.e R.~~-e {N~.bl~ .~as_e~.L 8.85E-04 mRem/year

.. ,.,. ' .. '" , <" -*"**~'

Gamma Air Dose 2.53E-03 mRad Beta Air Dose 8.93E-04 mRad Total Body Dose (Particulates) 3.lOE-04 mRem Skin Dose (Particulates) 111 7.47E-05 mRem

[1] DOSE includes the dose values resulting from the release of iodines, particulates (with half lives >8 days) tritium, and carbon-14 in gaseous effluents.

Highest Organ Dose by Age Group:

Adult Bone 2.97E-03 mRem Teen Bone 4.26E-3 mRem 121 Child Bone N/A mRem 121 Infant Bone N/A mRem

[2] Dose calculated only for the age groups likely to be in the field.

Page 40 of 162

SECTION 7 METEOROLOGICAL DATA AND DISPERSION ESTIMATES On 13 April 1972, the. meteorological monitoring program commenced at the Clinton Power Station site. The meteorological system consists of a tower 199 feet high with two (2) levels of instrumentation at the 10-meter and 60-meter elevations. A combined cup and vane sensor measures wind direction and wind speed[s] at the 10-meter and 60-meter levels. An aspirated dual temperature sensor senses the temperatures at these levels. One-half of the dual sensors at each elevation are used for ambient temperature while the other half are used to provide a differential temperature between the 10-meter and 60-meter levels.

Meteorological monitoring instruments have been placed on the Clinton .Power Station microwave tower at the 10-meter level to serve as a backup to. the primary meteorological tower.

Clinton Power Station meteorological data is transmitted to the Main Control Room (MCR) via a dedicated communication link. Once the signals are received at the MCR, they are then converted to a 4 to 20 milliamp signal and fed individually to a microprocessor and chart recorders. The microprocessor is part of the Clinton Power Station Radiation Monitoring System (RMS). Meteorological data is available via the microprocessors in the Main Control Room and the Technical Support Center (TSC).

Dispersion modeling for effluents for normal operation of Clinton Power Station is a straight-line, sector-averaged Gaussian plume model designed to estimate average relative concentration at various receptor points. The model was developed in accordance with routine release analysis procedures specified in Regulatory Guide 1.111. For joint frequency input data, periods of calm are distributed in accordance with a directional distribution. For hourly input data, periods of calm are the previous hour's wind direction. Periods of calm are assigned a wind speed value of half the specified instrument threshold value. Reference Table 18 for more detailed information on meteorology and dispersion data.

Page 41 of 162

TABLE 16 Meteorlogical Data Availability Data Period: January 01, 2016 - December 31, 2016

.., .. *~* . '. p;EffC'El'iT 6~iVAtfD'J>AR't(Mi:iERHPUR5_* ..... ' *..

. . . .. _:*" *. *,,:,, *

  • J>A.1l~M.Ern~.Ft :. *.::::ii'.l : .*. ,, .* . , .-*,0,uai:!~t,1<. 1*.\C:i~cirJ~r.~::. J~:.*Q~.~t.~~i:j::,; , .Q~~h¢.~::4.i*
1. Wind Speed
a. 10-Met~r s~n.~or 99.9% 99.8% 100.0% 99.9%
b. '60 Meter sensor 99.6% 99.8% 100.0% 99.9%
2. Wind Direction *. '"

a.. JO-Meter sensor 99.9% 99.8% 100.0% 99.9%

b. 60 Meter sensc:ir 99.9% 99.8% 97.8% 99.9%
3. Temperatµre. - '
a. 'iO-Meter sensor 99.9% 99.8% 100.0% 99.9%
b. 60 Meter sensor 99.9% 99.8% 100.0% 99.9%
  • c. Temperature Diffe'r'ence (1b'm_~*6om). '. 99.9% 99.8% 100.0% 99.9%
4. Percent of hours for which valid 10-meter WincLSpeed, Wind [)irectio'n, ~ndD.elta *,. * .

Temperature were available 99. 9% 99.8% 100.0% 99.9%

5. Percent of hours f.or which valid 60-meter Wind*Speed, Wind Directioh; .a~.d *oeita Temperaturewere available * , 99.1% 99.8% 100.0% 99.9%

Clinton Power Station was able to achieve 99.8% Meteorological Recoverable Data during 2016 exceeding the minimum criteria of 90% as delineated within Regulatory Guide 1.23.

Page 42 of 162

TABLE 17 Classification of Atmospheric Stability stabifitv c1as!iific~1:i0n. ;Pas*qullf . Catego_ry * . m~fil1in1fconditioi:ls Extremely unstable A ------ <LH ~ -1. 9 Moderately unstable B -1.9 <LlT~ -1.7 Slightly unstable c -1.7 <LlT~ -1.5 Neutral D -1.5 <LlT~ -0.5 Slightly stable E -0.5 <LlT~ 1.5 Moderately stable F 1.5 <LlT~ 4.0 Extremely stable G 4.0 <LlT~ ------

LlT =temperature difference in degrees Celsius per 100 meters Page 43 of 162

TABLE 18 Joint Wind Frequency Distribution by Stability Class Reporting Period: January 01, 2016 - December 31, 2016 The following table contains the joint wind frequency tables for CPS. The tables are segregated by sensor elevation and calendar quarter. All tabled values are in hours.

Clinton Power Station Period of Record: January - March 2016 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 0 0 0 2 NNE 0 0 1 2 0 0 3 NE 0 0 1 0 0 0 1 ENE 0 2 4 0 0 0 6 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 8 0 0 0 8 SSE 0 0 1 0 0 0 1 s 0 0 0 1 0 0 1 SSW 0 0 0 0 1 0 1 SW 0 0 0 1 0 0 1 WSW 0 0 0 0 0 0 0 w 0 0 1 3 1 1 6 WNW 0 0 0 5 0 0 .5 NW 0 0 1 4 1 0 6 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 2 19 16 3 1 41 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 44 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 4 0 0 0 4 NNE 0 1 1 2 0 0 4 I /

NE 0 0 3 0 0 0 3 ENE 0 4 3 0 0 0 7 E 0 1 0 0 0 0 1 ESE 0 2 0 0 0 0 2 SE 0 0 3 0 0 0 3 SSE 0 0 3 0 0 0 3 s 0 0 0 2 0 0 2 SSW 0 0 0 3 1 0 4 SW 0 0 0 2 0 0 2 WSW 0 0 1 1 1 0 3 w 0 0 6 8 2 0 16 WNW 0 0 5 4 0 0 9 NW 0 1 5 5 1 0 12 NNW 0 3 1 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 12 35 27 5 0 79 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 45 of 162

Clinton Power Station*

Period of Record: January - March 2016 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 2 1 0 0 4 NNE 0 2 1 0 0 0 3 NE 0 2 2 0 0 0 4 ENE 0 2 1 0 0 0 3 E 0 1 0 0 0 0 1 ESE 0 3 0 0 0 0 3 SE 0 2 3 0 0 0 5 SSE 0 2 2 4 0 0 8 s 0 1 3 3 0 0 7 SSW 0 1 3 3 2 1 10 SW 0 1 4 2 0 0 7 WSW 0 0 7 1 0 0 8 w 0 3 8 6 2 0 19 WNW 0 1 6 2 3 0 12 NW 0 1 1 5 1 0 8 NNW 0 3 8 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 0 26 51 27 8 1 113 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 46 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 20 39 4 5 1 72 NNE 2 20 21 2 4 5 54 NE 7 25 9 6 0 0 47 ENE 5 16 6 0 0 0 27 E 3 10 1 2 0 0 16 ESE 5 26 5 3 0 0 39 SE 3 30 25 2 0 0 60 SSE 0 21 32 5 0 0 58 s 1 12 40 19 0 0 72 SSW 1 8 35 48 13 0 105 SW 1 11 14 9 4 0 39.

WSW 0 19 19 12 10 0 60 w 0 8 31 28 16 3 86 WNW 1 24 55 82 5 0 167 NW 1 21 44 51 29 1 147 NNW 3 21 27 21 6 0 78 Variable 0 0 0 0 0 0 0 Total 36 292 403 294 92 10 1127 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 47 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 11 6 0 0 0 18 NNE 0 8 2 3 0 0 13 NE 2 12 16 1 0 0 31 ENE 7 12 2 0 0 0 21 E 0 17 4 0 0 0 21 ESE 3 28 0 0 0 0 31 SE 1 28 11 0 0 0 40 SSE 1 32 37 7 0 0 77 s 1 19 60 23 0 0 103 SSW 0 5 54 45 5 0 109 SW 3 9 19 3 0 0 34 WSW 5 4 23 5 1 0 38 w 7 10 21 8 0 0 46 WNW 8 25 32 0 1 0 66 NW 4 11 12 0 0 0 27 NNW 1 10 1 0 0 0 12 Variable 0 0 0 0 0 0 0 Total 44 241 300 95 7 0 687 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3.

Page 48 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 >* 24 Total N 0 1 0 0 0 0 1 NNE 1 4 2 0 0 0 7 NE 3 16 1 0 0 0 20 ENE 3 5 0 0 0 0 8 E 2 2 0 0 0 0 4 ESE 0 2 0 0 0 0 2 SE 2 3 1 0 0 0 6 SSE 1 6 4 0 0 0 11 s 0 3 5 0 0 0 8 SSW 1 7 3 0 0 0 11 SW 0 1 5 0 0 0 6 WSW 2 1 3 0 0 0 6 w 0 2 0 0 0 0 2 WNW 0 0 0 0 0 0 0 NW 1 4 0 0 0 0 5 NNW 0 3 0 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 16 60 24 0 0 0 100 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 49 of 162

Clinton Power StCJ.tion Period of Record: January - March 2016 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 5 6 0 0 0 0 11 ENE 1 1 0 0 0. 0 2 E 0 1 0 0 0 0 1 ESE 0 0 0 0 0 0 0 SE 2 3 0 0 0 0 5 SSE 1 1 0 0 0 0 2 s 0 3 0 0 0 0 3 SSW 0 2 2 0 0 0 4 SW 0 0 0 0 0 0 0 WSW 1 0 1 0 0 0 2 w 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 2 0 0 0 0 2 NNW 0 1 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 10 20 3 0 0 0 33 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 50 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 4 0 0 4 NNE 0 0 0 1 0 0 1 NE 0 0 0 1 0 0 1 ENE 0 1 1 4 0 0 6 E 0 0 0 0 0 0 0 ESE 0 0 1 1 0 0 2 SE 0 0 6 1 0 0 7 SSE 0 0 0 0 0 0 0 s 0 0 0 1 0 1 2 SSW 0 0 0 0 0 0 0 SW 0 0 0 1 0 0 1 WSW 0 0 0 0 1 0 1 w 0 0 0 2 1 2 5 WNW 0 0 0 0 5 0 5 NW 0 0 1 0 4 1 6 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 1 9 16 11 4 41 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 51 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 3 0 0 4 NNE 0 1 1 2 0 0 4 NE 0 0 2 3 0 0 5 ENE 0 2 4 0 0 0 6 E 0 1 0 0 0 0 1 ESE 0 0 1 1 0 0 2 SE 0 0 2 3 0 0 5 SSE 0 0 0 0 0 0 0 s 0 0 0 1 2 1 4 SSW 0 0 0 0 2 0 2 SW 0 0 0 1 1 0 2 WSW 0 0 3 4 1 3 11 w 0 0 0 4 4 0 8 WNW 0 0 4 6 3 0 13 NW 0 0 3 0 5 1 9 NNW 0 1 2 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 5 23 28 18 5 79 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 52 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Slightly Unstable - 60m-ldm Delta-T (F)

Winds Measured at 60 M,eters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total I

N 0 1 2 1 0 0 4 NNE 0 3 0 1 0 0 4 NE 0 0 2 1 0 0 3 ENE 0 1 1 1 0 0 3 E 0 1 1 0 0 0 2 ESE 1 0 2 0 0 0 3 SE 0 3 1 2 1 3 10 SSE 0 1 1 0 1 0 3 s 0 0 2 4 1 1 8 SSW 0 1 5 0 2 3 11 SW 0 1 1 3 1 0 6 WSW 0 0 3 4 1 1 9 w 0 0 4 7 4 3 18 WNW 0 0 4 4 1 1 10 NW 0 1 3 2 5 0 11 NNW 0 2 4 2 0 0 8 Variable 0 0 0 0 0 0 0 Total 1 15 36 32 17 12 113 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 53 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 12 31 34 0 4 84 NNE 0 7 12 6 0 8 33 NE 5 16 13 3 8 2 47 ENE 2 5 12 8 0 0 27 E 3 6 6 0 2 2 19 ESE 1 8 20 5 0 2 36 SE 1 9 25 27 7 1 70 SSE 0 10 17 25 8 0 60 s 1 6 16 25 25 17 90 SSW 1 4 22 28 22 9 86 SW 1 5 9 8 8 3 34 WSW 1 10 8 16 8 22 65 w 0 7 13 34 14 18 86 WNW 2 11 19 66 74 18 190 NW 0 13 16 40 37 29 135 NNW 1 6 27 18 4 5 61 Variable 0 0 0 0 0 0 0 Total 22 135 266 343 217 140 1123 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 5 Hours of missing stability measurements in all stability classes: 3 Page 54 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 6 6 3 0 16 NNE 0 3 9 4 1 0 17 NE 1 1 5 11 7 0 25 ENE 0 1 6 6 0 0 13 E 1 1 11 10 1 0 24 ESE 3 3 20 14 0 0 40 SE 0 3 26 16 5 4 54 SSE 0 1 12 41 16 5 . 75 s 0 2 5 40 70 15 132 SSW 0 0 5 27 21 9 62 SW 0 2 3 23 10 2 40 WSW 1 4 2 14 15 2 38 w 2 5 12 17 8 0 44 WNW 0 7 12 37 5 1 62 NW 1 7 15 9 0 0 32 NNW 2 1 9 1 0 0 13 Variable 0 0 0 0 0 0 0 Total 11 42 158 276 162 38 687 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 55 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed *(in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 3 1 0 4 NNE 0 0 1 2 1 0 4 NE 0 0 6 3 1 0 10 ENE 0 0 7 6 0 0 13 E 0 1 4 2 0 0 7 ESE 0 4 2 0 0 0 6 SE 0 1 3 1 0 0 5 SSE 0 0 2 5 1 0 8 s 0 0 0 5 6 0 11 SSW 0 0 2 2 3 0 7 SW 0 0 0 6 3 0 9 WSW 0 0 1 2 3 0 6 w 0 0 0 3 0 0 3 WNW 0 0 1 0 0 0 1 NW 0 0 2 0 0 0 2 NNW 0 0 4 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 6 35 40 19 0 100 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 56 of 162

Clinton Power Station Period of Record: January - March 2016 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 3 0 0 3 NNE 0 0 0 0 0 0 0 NE 0 0 1 0 0 0 1 ENE 0 1 1 0 0 0 2 E 0 3 6 0 0 0 9 ESE 0 2 0 0 0 0 2 SE 0 0 0 0 0 0 0 SSE 0 0 1 3 0 0 4 s 0 0 1 1 0 0 2 SSW 0 0 0 2 2 0 4 SW 0 0 1 2 0 0 3 WSW 0 0 1 0 1 0 2 w 0 0 1 0 0 0 1 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 6 13 11 3 0 33 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in a.11 stability classes: 3 Page 57 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 8 8 0 0 17 NNE 0 0 3 1 0 0 4 NE 0 0 4 0 0 0 4 ENE 0 1 0 0 0 0 1 E 0 0 2 0 0 0 2 ESE 0 0 1 0 0 0 1 SE 0 0 6 0 0 0 6 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 SSW 0 0 0 1 0 0 1 SW 0 0 0 0 0 0 0 WSW 0 0 0 3 0 0 3 w 0 0 4 1 0 0 5 WNW 0 0 1 1 0 1 3 NW 0 0 1 3 0 2 6 NNW 0 0 5 2 0 0 7 Variable 0 0 0 0 0 0 0 Total 0 2 35 20 0 3 60 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing ~tability measurements in all stability classes: 4 Page 58 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 3 0 0 3 NNE 0 5 5 1 0 0 11 NE 0 5 3 0 0 0 8 ENE 0 2 2 0 0 0 4 E 0 2 2 0 0 0 4 ESE 0 1 3 0 0 0 4 SE 0 4 7 0 0 0 11 SSE 0 0 5 0 0 0 5 s 0 2 1 2 0 0 5 SSW 0 1 2 3 2 0 8 SW 0 0 4 0 2 0 6 WSW 0 0 9 1 0 0 10 w 0 0 8 3 0 1 12 WNW 0 1 8 2 1 1 13 NW 0 0 8 10 0 2 20 NNW 0 0 5 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 0 23 72 25 5 4 129 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 59 of 162

Page 60 of 162 Clinton Power Station Period of Record: April - June 2016 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 14 20 4 0 0 40 NNE 1 9 28 4 0 0 42 NE 0 18 13 9 0 0 40 ENE 3 25 17 0 0 0 45 E 0 16 27 0 0 0 43 ESE 4 25 9 0 0 0 38 SE 6 25 11 0 0 0 42 SSE 1 33 26 12 0 0 72 s 0 32 43 17 1 0 93 SSW 1 18 29 26 0 0 74 SW 0 9 21 5 2 0 37 WSW 0 12 12 1 1 0 26 w 2 10 6 8 1 0 27 WNW 0 15 33 22 4 0 74 NW 4 16 22 20 4 0 66 NNW 0 16 12 2 2 0 32 Variable 0 0 0 0 0 0 0 Total 24 293 329 130 15 0 791 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 61 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 28 6 1 0 0 38 NNE 3 19 4 0 0 0 26 NE 1 37 9 0 0 0 47 ENE 5 31 5 0 0 0 41 E 5 34 6 0 0 0 45 ESE 7 34 2 0 0 0 43 SE 5 19 2 0 0 0 26 SSE 2 34 12 o* 0 0 48 s 5 41 27 1 0 0 74 SSW 3 32 32 10 0 0 77 SW 2 33 29 4 0 0 68 WSW 1 21 15 0 0 0 37 w 4 18 18 3 0 0 43 WNW 3 33 16 3 0 0 55 NW 1 20 12 1 0 0 34 NNW 3 20 7 0 0 0 30 Variable 0 0 0 0 0 0 0 Total 53 454 202 23 0 0 732 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 62 of 162

Clinton Power Station Period of Record: April - June 2016 I

Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 4 1 0 0 0 7 NNE 1 4 0 0 0 0 5 NE 6 11 0 0 0 0 17 ENE 6 6 0 0 0 0 12 E 3 13 0 0 0 0 16 ESE 7 9 0 0 0 0 16 SE 2 5 0 0 0 0 7 SSE 4 3 0 0 0 0 7 s 3 6 0 0 0 0 9 SSW 6 8 0 0 0 0 14 SW 6 11 1 0 0 0 18 WSW 2 4 2 0 0 0 8 w 4 1 0 0 0 0 5 WNW 4 3 0 0 0 0 7 NW 2 16 0 0 0 0 18 NNW 1 3 0 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 59 107 4 b 0 0 170 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: , 0 Hours of missing stability measurements in all stability classes: 4 Page 63 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measl,lred at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 0 0 0 0 0 2 NNE 7 2 0 0 0 0 9 NE 2 9 0 0 0 0 11 ENE 8 5 0 0 0 0 13 E 10 0 0 0 0 0 10 ESE 5 0 0 0 0 0 5 SE 4 0 0 0 0 0 4 SSE 4 4 0 0 0 0 8 s 3 3 0 0 0 0 6 SSW 2 1 0 0 0 0 3 SW 1 0 0 0 0 0 1 WSW 8 0 0 0 0 0 8.

w 2 0 0 0 0 0 2 WNW 8 3 0 0 0 0 11 NW 9 7 0 0 0 0 16 NNW 7 1 0 0 0 0 8 Variable 0 0 0 0 0 0 0 Total 82 35 0 0 0 0 117 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 64 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 13 2 0 17 NNE 0 0 2 0 0 0 2 NE 0 0 2 2 0 0 4 ENE 0 0 0 1 0 0 1 E 0 0 0 1 0 0 1 ESE 0 0 1 1 0 0 2 SE 0 0 5 0 0 0 5 SSE 0 0 0 0 0 0 0 s 0 0 0 0 1 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 0 2 0 0 2 WSW 0 0 0 5 0 0 5 w 0 0 0 1 0 0 1 WNW 0 0 0 1 1 3 5 NW 0 0 1 6 3 0 10 NNW 0 0 1 3 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 0 14 36 7 3 60 Hours of calm in this stability class: 0 Hours of *missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 65 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24. Total N 0 1 2 5 0 0 8 NNE 0 1 5 1 0 0 7 NE 0 1 3 1 0 0 5 ENE 0 3 1 1 0 0 5 E 0 0 2 2 0 0 4 ESE 0 0 2 2 0 0 4 SE 0 1 11 2 0 0 14 SSE 0 0 1 0 0 0 1 s 0 2 2 3 5 0 12 SSW 0 0 1 0 0 3 4 SW 0 0 6 6 0 0 12 WSW 0 0 2 3 0 0 5 w 0 0 6 6 3 3 18 WNW 0 0 4 5 2 2 13 NW 0 0 2 6 5 1 14 NNW 0 0 1 0 2 0 3 Variable 0 0 0 0 0 0 0 Total 0 9 51 43 17 9 129 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 66 of 162 .

Clinton Power Station Period of Record: April - June 2016 Stability Class - Slightly Unstable - 60m-10m Delta-T. (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 4 5 2 0 11 NNE 0 1 5 3 0 0 9 NE 0 0 3 1 0 0 4 ENE 0 1 0 2 0 0 3 E 0 2 3 0 0 0 5 ESE 0 1 3 1 0 0 5 SE 0 5 4 1 0 0 10 SSE 0 6 7 3 1 0 17 s 0 1 6 7 5 0 19 SSW 0 2 7 5 1 1 16 SW 0 3 4 3 1 0 11 WSW 0 3 2 5 0 0 10 w 0 2 5 7 3 0 17 WNW 0 0 7 6 5 4 22 NW 0 2 4 3 3 1 13 NNW 0 1 5 2 0 0 8 Variable 0 0 0 0 0 0 0 Total 0 30 69 54 21 6 180 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 67 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 5 17 16 2 0 41 NNE 1 6 12 11 2 0 32 NE 0 8 12 4 9 3 36 ENE 0 18 13 10 11. 0 52 E 1 2 12 16 10 0 '41 ESE 2 11 14 10 1 0 38 SE 1 16 29 13 4 1 64 SSE 0 15 28 14 18 6 81 s 1 9 31 30 22 4 97 SSW 0 5 18 12 11 2 48 SW 0 5 12 7 3 0 27 WSW 1 7 10 8 0 1 27 w 0 7 6 8 12 1 34 WNW 0 9 14 30 19 12 84 NW 0 11 7 11 8 8 45 NNW 1 5 19 18 1 0 44 Variable 0 0 0 0 0 0 0 Total 9 139 254 218 133 38 791 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 68 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1. 4 18 9 1 0 33 NNE 0 4 20 9 0 0 33 NE 2 3 11 29 1 0 46 ENE 1 4 13 16 1 0 35 E 0 5 17 23 2 0 47 ESE 2 6 25 12 0 0 45 SE 0 8 18 8 0 0 34 SSE 0 1 21 27 4 0 53 s 0 4 24 57 6 1 92 SSW 0 3 25 31 14 0 73 SW 0 3 16 24 3 0 46 WSW 1 1 9 15 8 1 35 w 1 3 10 28 7 0 49 WNW 0 1 22 22 1 0 46 NW 0 4 15 12 1 0 32 NNW 0 2 15 17 0 0 34 Variable 0 0 0 0 0 0 0 Total 8 56 279 339 49 2 733 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 69 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 5 5 0 0 11 NNE 0 0 1 2 0 0 3 NE 1 1 2 5 0 0 9 ENE 0 2 6 4 0 0 12 E 0 2 7 8 1 0 18 ESE 2 5 7 9 0 0 23 SE 0 4 2 0 0 0 6 SSE 0 2 5 1 0 0 8 s 0 2 4 6 0 0 12 SSW 1 0 5 5 0 0 11 SW 1 3 3 3 1 0 11 WSW 0 1 4 7 1 0 13 w 2 3 3 3 0 0 11 WNW 0 0 2 3 0 0 5 NW 0 3 6 2 0 0 11 NNW 0 2 2 2 0 0 6 Variable 0 0 0 0 0 0 0 Total 8 30 64 65 3 0 170 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 70 of 162

Clinton Power Station Period of Record: April - June 2016 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24' Total N 1 2 2 0 0 0 5 NNE 0 0 1 0 0 0 1 NE 0 1 2 1 1 0 5 ENE 1 1 3 4 0 0 9 E 0 2 9 3 0 0 14 ESE 1 2 5 2 0 0 10 SE 1 6 2 0 0 0 9 SSE 0 2 5 1 0 0 8 s 0 2 4 7 0 0 13 SSW 0 0 1 0 0 0 1 SW 0 0 1 0 0 0 1 WSW 0 1 3 0 0 0 4 w 1 6 3 1 0 0 11 WNW 1 1 5 1 0 0 8 NW 0 0 8 1 0 0 9 NNW 1 1 7 0 0 0 9 Variable 0 0 0 0 0 0 0 Total 7 27 61 21 1 0 117 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 71 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 3 1 0 0 4 NNE 0 0 1 0 0 0 1 NE 0 0 0 0 0 0 0 ENE 0 0 1 0 0 0 1 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 1 0 0 0 0 1 s 0 1 0 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 1 0 0 0 0 1 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 2 0 0 0 2 NW 0 0 4 1 0 0 5 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 3 12 2 0 0 17 Hours of calm in this stability class: 0.

Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 72 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 1 0 0 0 2 NNE 0 1 4 0 0 0 5 NE 0 0 5 0 0 0 5 ENE 0 6 1 0 0 0 7 E 0 2 0 0 0 0 2 ESE 0 0 0 0 0 0 0 SE 0 1 0 0 0 0 1 SSE 0 2 0 0 0 0 2 s 0 2 1 0 0 0 3 SSW 0 l 2 0 0 0 3 SW 0 0 0. 0 0 0 0 WSW 0 2 1 0 0 0 3 w 0 0 2 1 0 0 3 WNW 0 1 8 9 0 0 18 NW 0 1 6 0 0 0 7 NNW 0 1 3 0 0 0 4 Variable 0 0 0 0 0 0 0

  • Total 0 21 34 10 0 0 65 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 73 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 3 2 0 0 7 NNE 0 1 0 0 0 0 1 NE 0 4 2 0 0 0 6 ENE 0 3 1 0 0 0 4 E 0 4 0 0 0 0 4 ESE 1 7 0 0 0 0 8 SE 0 9 0 0 0 0 9 SSE 0 8 1 0 0 0 9 s 0 10 12 0 0 0 22 SSW 1 12 14 0 0 0 27 SW 0 7 12 0 0 0 19 WSW 0 9 0 2 0 0 11 w 1 5 12 6 0 0 24 WNW 0 8 4 1 0 0 13 NW 0 4 5 0 0 0 9 NNW 0 4 0 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 3 97 66 11 0 0 177 Hours of calm in this st,ability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 74of162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total I'

N 2 14 17 3 0 0 36 NNE 0 18 24 2 0 0 44 NE 0 30 7 0 0 0 37 ENE 3 16 5 0 0 0 24 E 5 17 4 0 0 0 26 ESE 9 23 3 0 0 0 35 SE 13 33 1 0 0 0 47 SSE 18 53 15 0 0 0 86 s 8 40 47 2 0 0 97 SSW 8 40 47 3 0 0 98 SW 5 39 20 3 0 0 67 WSW 6 18 6 1 0 0 31 w 1 16 12 5 0 0 34 WNW 3 16 20 3 0 0 42 NW 0 17 17 6 0 0 40 NNW 0 12 8 0 0 0 20 Variable 0 0 0 0 0 0 0 Total 81 402 253 28 0 0 764 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 75 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 16 2 1 0 0 21 NNE 1 15 13 1 0 0 30 NE 8 55 4 0 0 0 67 ENE 5 29 1 0 0 0 35 E 13 19 2 0 0 0 34 ESE 26 34 0 0 0 0 60 SE 8 33 0 0 0 0 41 SSE 17 59 5 0 0 0 81 s 7 87 15 0 0 0 109 SSW 9 58 42 0 0 0 109 SW 8 35 19 1 0 0 63 WSW 11 15 13 0 0 0 39 w 10 23 5 0 0 0 38 WNW 11 38 8 2 0 0 59 NW 6 26 8 0 0 0 40 NNW 6 10 2 0 0 0 18 Variable 0 0 0 0 0 0 0 Total 148 552 139 5 0 0 844 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 76 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 5 1 0 0 0 6 NNE 9 11 0 0 0 0 20 NE 17 25 0 0 0 0 42 ENE 20 5 0 0 0 0 25 E 13 3 0 0 0 0 16 ESE 8 4 0 0 0 0 12 SE 3 4 0 0 0 0 7 SSE 3 13 1 0 0 0 17 s 0 10 0 0 0 0 10 SSW 3 13 1 0 0 0 17 SW 7 7 2 0 0 0 16 WSW 9 15 1 0 0 0 25 w 13 5 1 0 0 0 19 WNW 6 12 0 0 0 0 18 NW 7 7 0 0 0 0 14 NNW 1 2 0 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 119 141 7 0 0 0 267 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 77 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 0 0 0 0 1 NNE 5 2 0 0 0 0 7 NE 23 9 0 0 0 0 32 ENE 6 0 0 0 0 0 6 E 1 0 0 0 0 0 1 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 SSW 1 1 0 0 0 0 2 SW 3 0 0 0 0 0 3 WSW 4 0 0 0 0 0 4 w 4 1 0 0 0 0 5

  • WNW 2 0 0 0 0 0 2 NW 6 3 0 0 0 0 9 NNW 0 1 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 56 17 0 0 0 0 73 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missihg stability measurements in all stability classes: 0 Page 78 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 3 1 0 4 NNE* 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 1 0 0 1 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 1 0 0 *o 1 SSE 0 0 0 0 0 0 0 s 0 1 0 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 1 0 0 0 0 1 WSW 0 0 0 0 0 0 0 w 0 0 0 1 0 0 1 WNW 0 0 0 3 0 0 3 NW 0 0 3 1 0 0 4 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 2 5 9 1 0 17 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 79 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 3 1 0 0 4 NNE 0 1 1 0 0 0 2 NE 0 0 0 4 0 0 4 ENE 0 3 4 1 0 0 8 E 0 0 2 0 0 0 2 ESE 0 0 0 0 0 0 0 SE 0 2 0 0 0 0 2 SSE 0 0 1 0 0 0 1 s 0 0 3 0 0 0 3 SSW 0 0 3 0 0 0 3 sw 0 1 1 0 0 0 2 WSW 0 0 2 0 0 0 2 w 0 0 2 1 2 0 5 WNW 0 0 5 6 7 0 18 NW 0 0 4 1 0 0 5 NNW 0 0 3 1 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 7 34 15 9 0 65 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 80 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 2 2 0 6 NNE 0 0 1 0 0 0 .1 NE 0 3 0 1 0 0 4 ENE 0 4 1 1 0 0 6 E 1 3 1 0 0 0 5 ESE 0 5 1 0 0 0 6 SE 0 10 3 0 0 0 13 SSE 0 2 1 2 0 0 5 s 0 10 12 6 0 0 28 SSW 0 5 19 0 0 0 24 SW 0 5 6 4 0 0 15 WSW 0 5 4 1 2 0 12 w 1 2 10 2 5 0 20 WNW 0 2 7 2 0 0 11 NW 0 4 8 0 0 0 12 NNW 0 1 0 1 0 0 2 Variable 0 0 0 0 0 0 0 Total 2 61 76 22 9 0 170 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 7 Hours of missing stability measurements in all stability classes: 0 Page 81 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 5 11 13 7 0 36 NNE 0 4 18 12 0 0 34 NE 1 9 18 7 0 0 35 ENE 0 12 7 5 0 0 24 E 2 13 9 9 0 0 33 ESE 5 24 12 2 0 0 43 SE 7 38 8 4 0 0 57 SSE 9 25 36 18 3 0 91 s 6 21 34 36 3 0 100 SSW 5 17 29 20 1- 0 72 SW 3 15 24 14 1 0 57 WSW 0 10 16 2 1 0 29 w 2 10 14 13 3 0 42 WNW 1 9 14 15 4 0 43 NW 0 8 10 8 6 0 32 NNW 0 5 11 5 0 0 21 Variable 0 0 0 0 0 0 0 Total 41 225 271 183 29 0 749 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 15 Hours of missing stability measurements in all stability classes: 0 Page 82 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 4 14 3 2 0 24 NNE 0 3 3 17 0 0 23 NE 1 3 24 20 0 0 48 ENE 0 4 29 10 0 0 43 E 0 9 29 3 0 0 41 ESE 0 16 23 8 0 0 47 SE 2 15 48 4 0 0 69 SSE 0 23 41 27 0 0 91 s 2 9 57 44 0 0 112 SSW 1 7 42 48 0 0 98 SW 1 6 21 21 0 1 50 WSW 1 1,0 8 14 3 0 36 w 3 12 25 6 2 0 48 WNW 3 5 18 23 0 0 49 NW 0 7 26 4 2 0 39 NNW 1 6 10 4 0 0 21 Variable 0 0 0 0 0 0 0 Total 16 139 418 256 9 1 839 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 5 Hours of missing stability measurements in all stability classes: 0 Page 83 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 1 4 4 0 0 12 NNE 0 2 1 3 0 0 6 NE 1 1 2 9 0 0 13 ENE 2 1 11 10 0 0 24 E 0 3 17 0 0 0 20 ESE 0 4 15 3 0 0 22 SE 2 6 3 0 0 0 11 SSE 1 4 3 1 0 0 9 s 1 0 13 9 0 0 23 SSW 0 3 9 9 0 0 21 SW 0 3 7 5 1 0 16 WSW 1 4 10 11 0 0 26 w 0 4 10 3 0 0 17 WNW 0 4 6 3 0 0 13 NW 0 5 9 2 0 0 16 NNW 1 0 4 1 0 0 6 Variable 0 0 0 0 0 0 0 Total 12 45 124 73 1 0 255 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 12 Hours of missing stability measurements in all stability classes: 0 Page 84 of 162

Clinton Power Station Period of Record: July - September 2016 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 2 2 0 0 0 5 NNE 1 1 0 0 0 0 2 NE 0 0 2 4 0 0 6 ENE 0 1 1 2 0 0 4 E 1 1 2 2 0 0 6 ESE 1 6 6 0 0 0 13 SE 4 0 0 0 0 0 4 SSE 2 0 0 0 0 0 2 s 0 1 0 0 0 0 1 SSW 0 1 0 0 0 0 1 SW 0 1 1 2 0 0 4 WSW 1 0 2 1 0 0 4 w 0 0 1 2 0 0 3 WNW 0 2 1 0 0 0 3 NW 0 0 3 0 0 0 3 NNW 0 0 4 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 11 16 25 13 0 0 65 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes: 0 Page 85 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 0 0 1 0 0 1 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 0 1 1 0 0 2 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 86 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 6 0 0 0 7 NNE 0 2 1 1 0 0 4 NE 0 0 2 0 0 0 2 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 2 3 0 0 0 5 SSE 0 1 3 0 0 0 4 s 0 0 3 2 0 0 5 SSW 0 0 2 0 0 0 2 SW 0 0 1 0 0 0 1 WSW 0 0 0 1 0 0 1 w 0 0 1 5 0 0 6 WNW 0 1 7 3 3 0 14 NW 0 0 6 1 0 0 7 NNW 0 2 3 1 0 0 6 Variable 0 0 0 0 0 0 0 Total 0 9 38 14 3 0 64 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 87 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 6 1 0 0 11 NNE 0 4 1 0 0 0 5 NE 0 0 1 0 0 0 1 ENE 0 1 0 0 0 0 1 E 0 1 0 0 0 0 1 ESE 0 1 0 0 0 0 1 SE 0 4 3 0 0 0 7 SSE 0 1 4 0 0 0 5 s 0 2 1 0 0 0 3 SSW 0 1 4 2 1 0 8 SW 0 0 17 3 0 0 20 WSW 0 0 3 4 0 0 7 w 0 0 8 3 0 0 11 WNW 0 1 8 6 6 0 21 NW 0 2 7 2 0 0 11 NNW 0 1 5 0 0 0 6 Variable 0 0 0 0 0 0 0 Total 0 23 68 21 7 0 119 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 88 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24* Total N 1 19 24 2 0 0 46 NNE 0 13 9 3 0 0 25 NE 2 7 3 2 0 0 14 ENE 1 12 1 0 0 0 14 E 1 20 12 0 0 0 33 ESE 7 17 6 0 0 0 30 SE 2 16 19 0 0 Q 37 SSE 4 18 64 14 1 0 101 s 2 25 39 28 0 0 94 SSW 1 11 46 37 5 0 100 SW 0 13 19 15 0 0 47 WSW 5 21 28 14 0 0 68 w 1 33 34 20 1 0 89 WNW 1 20 46 39 14 0 120 NW 4 19 34 40 7 0 104 NNW 0 25 21 0 0 0 46 Variable 0 0 0 0 0 0 0 Total 32 289 405 214 28 0 968 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 89 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 10 16 0 0 0 29 NNE 2 13 8 0 0 0 23 NE 4 15 6 0 0 0 25 ENE 2 17 1 0 0 0 20 E 4 21 1 0 0 0 26 ESE 6 28 6 0 0 0 40 SE 6 17 9 0 0 0 32 SSE 2 39 16 3 0 0. 60 s 7 44 54 10 0 0 115 SSW 3 28 76 36 7 0 150 SW 4 17 24 8 0 0 53 WSW 10 31 12 2 0 0 55 w 2 13 26 12 2 0 55 WNW 8 8 22 9 1 0 48 NW 3 17 19 4 0 0 43 NNW 2 9 11 0 0 0 22 Variable 0 0 0 0 0 0 0 Total 68 327 307 84 10 0 796 Hours of calm. in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 90 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 7 0 0 0 0 9 NNE 4 8 0 0 0 0 12 NE 4 11 0 0 0 0 15 ENE 8 0 0 0 0 0 8 E 3 0 0 0 0 0 3 ESE 5 2 O* 0 0 0 7 SE 2 6 0 0 0 0 8 SSE 3 4 1 0 0 0 8 s 2 5 1 0 0 0 8 SSW 7 26 2 0 0 0 35 SW 4 16 4 0 0 0 24 WSW 2 11 0 0 0 0 13 w 3 2 0 0 0 0 5 WNW 5 5 1 0 0 0 11 NW 1 6 3 0 0 0 10 NNW 2 5 2 0 0 0 9 Variable 0 0 0 0 0 0 0 Total 57 114 14 0 0 0 185 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 91 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 2 1 0 0 0 0 3 NE 14 12 0 0 0 0 26 ENE 7 2 0 0 0 0 9 E 1 2 0 0 0 0 3 ESE 0 1 0 0 0 0 1 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 s 2 1 0 0 0 0 3 SSW 1 3 0 0 0 0 4 SW 3 6 0 0 0 0 9 WSW 0 4 0 0 0 0 4 w 3 3 0 0 0 0 6 WNW 3 0 0 0 0 0 3 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 36 35 0 0 0 0 71 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 92 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 0 1 0 1 NW 0 0 0 0 0 o* 0 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 0 1 0 1 0 2 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 93 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 5 2 0 0 7 NNE 0 0 2 1 0 0 3 NE 0 0 1 2 0 0 3 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 1 1 3 0 0 5 SSE 0 1 2 3 0 0 6 s 0 0 0 1 2 0 3 SSW 0 O* 0 2 0 0 2 SW 0 0 0 1 0 0 1 WSW 0 0 0 0 1 0 1 w 0 0 1 2 3 0 6 WNW 0 1 4 4 2 3 14 NW 0 0 4 3 1 0 8 NNW 0 0 4 0 1 0 5 Variable 0 0 0 0 0 0 0 Total 0 3 24 24 10 3 64 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: '3 Page 94 of 162

.Clinton Power Station Period of Record: October - December2016 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 3 5 4 0 0 12 NNE 0 2 2 0 0 0 4 NE 0 0 0 2 0 0 2 ENE 0 1 0 0 0 0 1 E 0 1 0 0 0 0 1 ESE 0 0 1 0 0 0 1 SE 0 4 1 2 0 0 7 SSE 0 1 2 2 0 0 5 s 0 2 0 1 1 0 4 SSW 0 0 2 3 0 2 7 SW 0 0 6 12 1 0 19 WSW 0 0 1 2 5 0 8 w 0 0 5 6 1 0 12 WNW 0 0 5 3 4 7 19 NW 0 1 6 3 2 0 12 NNW 0 0 2 3 0 0 5 Variable 0 0 0 0 0 0 0 Total 0 15 38 43 14 9 119 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 95 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 8 20 18 1 0 47 NNE 1 3 8 7 2 0 21 NE 1 6 2 7 1 0 17 ENE 0 6 6 1 0 0 13 E 1 5 8 13 2 0 29 ESE 1 8 14 10 1 0 34 SE 0 13 13 22 0 0 48 SSE 2 7 24 37 16 4 90 s 2 8 29 29 28 15 111 SSW 1 6 11 36 26 7 87 SW 2 9 9 18 12 0 50 WSW 1 10 13 15 15 0 54 w 0 4 49 30 7 2 92 WNW 1 7 30 31 33 20 122 NW 1 13 23 32 32 .8 109 NNW 0 10 19 15 0 0 44 Variable 0 0 0 0 0 0 0 Total 14 123 278 321 176 56 968 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 96 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 5 20 0 0 26 NNE 1 3 8 11 1 0 24 NE 1 5 5 8 4 0 23 ENE 0 1 9 6 0 0 16 E 0 2 7 14 0 0 23 ESE 0 3 12 25 0 0 40 SE 1 7 17 13 0 0 38 SSE 0 5 18 40 5 2 70 s 0 4 34 44 29 10 121 SSW 0 4 14 63 41 14 136 SW 0 0 9 33 11 1 54 WSW 3 3 12 15 7 0 40 w 0 4 21 17 17 2 61 WNW 0 4 6 23 9 4 46 NW 1 16 13 17 4 0 51 NNW 0 4 12 11 0 0 27 Variable 0 0 0 0 0 0 0 Total 8 65 202 360 128 33 796 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all ~tability classes: 3 Page 97 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 5 2 1 0 8 NNE 0 1 4 5 0 0 10 NE 0 0 9 9 0 0 18 ENE 0 3 5 4 0 0 12 E 1 1 1 0 0 0 3 ESE 0 1 4 0 0 0 5 SE 1 2 7 0 0 0 10 SSE 1 0 5 2 0 0 8 s 0 4 5 5 0 0 14 SSW 1 2 10 9 2 0 24 SW 0 2 3 15 0 0 20 WSW 0 0 6 12 0 0 18 w 0 1 5 4 0 0 10 WNW 0 1 3 2 0 0 6 NW 0 1 5 2 0 0 8 NNW 0 1 3 7 0 0 11 Variable 0 0 0 0 0 0 0 Total 4 20 80 78 3 0 185 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 98 of 162

Clinton Power Station Period of Record: October - December2016 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 4 4 0 0 8 ENE 0 1 5 4 0 0 10 E 0 3 6 1 0 0 10 ESE 0 1 4 0 0 0 5 SE 0 5 1 0 0 0 6 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 SSW 0 0 2 2 0 0 4 SW 0 4 3 4 0 0 11 WSW 0 2 2 6 0 0 10 w 0 *o 1 1 O* 0 2 WNW 0 1 1 2 0 0 4 NW 0 0 1 0 0 0 1 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 17 30 24* 0 0 71 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 99 of 162

SECTION 8 ODCM OPERATIONAL REMEDIAL REQUIREMENT REPORTS In accordance with CPS ODCM 3.1.1 Action G and 3.2.2 Action G.1; INOPERABLE radioactive liquid and gaseous effluent monitoring instrumentation channels remaining in an INOPERABLE condition for greater than thirty (30) days shall be reported in the Annual Radioactive Effluent Release Report.

During the course of 2016, there was one (1) instance where Channel 1 from OUIX-'-

PR051-151-1 was INOPERABLE for greater than a thirty (30) day period, which carried over from the end of 2015 into 2016 since it could not be worked until C1R16. This issue was corrected and the Stand-by Gas Treatment System (SGTS) Flow Rate Measuring Device was returned to functional. That event is documented below.

December 9, 2015 -- Issue Report# 02597597 OUIX-PR051-151-1, Stand-by Gas Treatment System (SGTS) Flow Rate Measuring Device was declared INOPERABLE on November 9, 2015 at 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />.

During troubl~shooting by Instrument Maintance Technicians under Work Order #1877501, it was determined that to repair this instrument, both trains of SGTS would have to be declared INOPERABLE. So this repair will be performed during C1R16, which is commencing May 16, 2016.

During periods when SGTS is placed into service and when coupled with this INOPERABLE channel, the station will comply with ODCM Table 3.2.2.1, ACTION E.2 by estimating SGTS flow rates when releases are occurring via this pathway once every four (4) hours (three (3) hours with our% Administrative Rule).

In summary, the extended INOPERABLE condition was the result of the potential of placing the Unit at risk by having to make both trains of SGTS INOPERABLE and having to enter an immediate Shutdown ACTION Statement.

Page 100 of 162

SECTION 9 CHANGES TO RADIOACTIVE WASTE TREATMENT SYSTEMS In accordance with Section 6.2 of the CPS ODCM, licensee-initiated changes to the liquid, gaseous or solid radioactive waste treatment systems shall be reported in the Annual Radioactive Effluent Release Report.

The Process Control Program {PCP) for radioactive wastes is controlled by Radioactive Wastes procedure, RW-AA-100, PROCESS CONTROL PROGRAM FOR RADIOACTIVE WASTES with revision 11 issued on 14 August 2015.

There were no permanent changes to the Solid Radioactive Waste Treatment System during the course of the 2016 reporting period.

Page 101 of 162

SECTION 10 NEW LOCATIONS FOR DOSE CALCULATION AND/ OR ENVIRONMENTAL MONITORING The following is a summary of the 2016 Annual Land Use Census. It shows changes in locations for dose calculations and/or environmental monitoring identified by the Annual Land Use Census. The distance of the receptor is being listed in the report in lieu of the name of the resident. This is being done to maintain and respect the privacy of the residents.

1.0 Nearest Residence The nearest residents identified in each of the sixteen (16) sectors are shown below.

N 1.50 A 1.50 A NNE 1.50 A 1.50 A NE 2.07 A 2.07 A ENE 2.86 A 2.86 A E 1.67 A 1.67 A ESE 5.14 A 5.14 A SE* 4.44 A 4.44 C/T/A SSE 2.90 A 2.90 A s 4.78 A 4.78 A SSW* 4.68 C/A 4.68 T/A SW 1.17 A 1.17 A WSW* 3.62 C/A 3.62. A w 1.95 C/T/A 1.95 C/T/A

.WNW 2.63 A 2.63 A NW 2.65 A 2.65 A NNW 2.05 A 2.05 A

  • lndiciates any changes from the previous year (l}nfant (C)hild (T)een (A)dult Page 102 of 162

2.0 Broadleaf Garden Census Eighty-three (83) gardens within a five (5) mile radius were located in the sixteen (16) geographical sectors surrounding CPS. Seventeen (17) gardens contained broad leaf vegetation, which were specifically identified for this report. Although other crops were identified within these areas, they are not addressed as part of this report.

The nearest gardens greater than fifty (50) square-meters and producing broadleaf vegetation identified in each of the sixteen (16) geographical sectors are shown below.

201,6 GARDENS. L** 2().1'5 *(,;ARPEl\JS*

SECTOR ' 'AGE GRO.UPS *. AGE aRO.OPS (kf!1) '(k11,1) '

l

  • -'- .. ;.* -* ' . ,~" **-**', *"

". ) \' /,

N 1.50 A 1.50 A NNE* 4.78 T/A 1.50 A NE 3.46 A 3.46 A ENE 2.86 A 2.86 A E 1.67 A 1.67 A ESE* 7.72 A 5.30 A SE* 7.80 A >8 SSE* >8 4.32 C/A S* >8 4.78 A SSW >8 >8 SW 5.87 C/A 5.87 C/A WSW 3.66 A 3.66 A W* 3.62 A 3.22 A WNW 2.64 A 2.64 A NW* >8 4.70 I/A NNW 2.05 A 2.05 A

  • lndiciates any changes from the previous year (l)nfant (C)hild (T)een (A)dult Page 103 of 162

3.0 Milking Animal Census Milking animals within the sixteen (16) geographical sectors were located within five (5) miles surrounding CPS. These milking animals were either used for the nursing of the animal's offspring or used for meat production for the resid.ent's own personal use and sold commercially. There were no residents that milked their animals for human consumption.

Milking animals were specifically identified for thi~ report. Although other livestock were identified within these areas, they are not addressed as part of this report.

The nearest milking animals identified in each of the sixteen {16) geographical sectors are shown below.

N 1.50 A 1.50 A NNE >8 >8 NE >8 >8 ENE >8 >8 E >8 >8 ESE >8 >8 SE >8 >8 SSE >8 >8 s 6.60 A 6.60 .A SSW* >8 5.47 A SW >8 >8 WSW 5.53 A 5.53 A w >8 >8 WNW >8 >8 NW >8 >8 NNW 2.05 A 2.05 A

  • lndiciates any changes from the previous year (l)nfant (C)hild (T)een (A)dult Page 104 of 162

SECTION 11 CORRECTIONS TO DATA REPORTED IN PREVIOUS REPORTS There was an administrative change identified against a previously submitted Annual Radioactive Effluent Release Report resulting in an errata data submittal to the Commission; IR 3971695 was generated on February 8, 2017.

In the 2015 ARERR report, Table 16, the Meteorological Data Availability, and Table 18, Joint Frequency Table, were not updated in the 2015 report. It was reported that Clinton Power Station was able to obtain 99.7% Meteorological Recoverable Data, when in fact CPS was able to obtain 99.6% recoverable data in 2015. This is still above the minimum criteria of 90% per Reg Guide 1.23. The Joint Frequency Table was not updated, but did not impact any dose calculations.

UPDATED TABLE 16 FROM 2015 ARERR METEOROLOGICAL DATA AVAILABILITY Data Period: January 01, 2015 - December 31, 2015

, *,,];. 1o::Meter sensof_ 99.8% 99.8% 99.0% 99.8%

-b. :.60 Meter sensor::: . 99.8% 99.8% 99.0% 98.6%

2.; Wind Direction :

  • , *' ' *: 't' 99.8% 99.8% 99.0% 99.8%

. b. ,60 M,eter sensor 99.8% 99.0% 99.9%

3*. Te'mperature ** /\ ~ ,-

a~. ld;-Meter:sensor

  • 99.8% 99.8% 99.0% 99.9%

99.8% 99.8% 99.0% 99.9%

  • c: _i'elTl'per~ttife Difteredce (Hfrn-6orn) _.. *.
  • 99.8% 99.8% 99.0% 99.9%

4.. Percent6f hours for which va:lid lO~mefor- *

\A.I ind Spe,ed,:Wind Dire~t'ro~, and]~lt~' ':'

Temperatur:e wer~ av.allable

  • 99. 8% 99.8% 99.0% 99.8%

. s~-*. Perc_e:~t of ry,ou(s fo~ )Nhictrvali~ 60;~.eter.

Wiri.d Speed; Wind Direttion, and Delta .*

Ten:)per*citu~e Y.,e~e avaii:~_ble. . *

  • 99.8% 99.8% 99.0% 99.5%

Clinton Power Station was able to achieve 99.6% Meteorological Recoverable Data during 2015 exceeding the minimum criteria of 90% as delineated within Regulatory Guide 1.23.

Page 105 of 162

UPDATED TABLE 18 FROM 2015 ARERR JOINT WIND FREQUENCY DISTRIBUTION BY STABILITY CLASS Reporting Period: January 01, 2015 - December 31, 2015 The following table contains the joint wind frequency tables for CPS. The tables are segregated by sensor elevation and calendar quarter. All tabled values are in hours.

Clinton Power Station Period of Record: January - March 2015 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 6 12 0 0 18 NNE 0 0 0 2 1 0 3 NE 0 0 0 0 0 0 0 ENE 0 1 4 0 0 0 5 E 0 0 1 0 0 0 1 ESE 0 0 1 0 0 0 1 SE 0 0 0 0 0 0 0 SSE 0 0 0 2 0 0 2 s 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 2 2 0 0 4 w 0 0 0 1 0 0 1 WNW 0 0 0 1 0 0 1 NW 0 0 4 3 2 1 10 NNW 0 0 9 3 2 0 14 Variable 0 0 0 0 0 0 0 Total 0 1 27 26 5 1 60 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 106 of 162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind.Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 5 5 1 0 11 NNE 0 0 0 0 1 0 1 NE 0 1 0 0 0 0 1 ENE 0 1 1 0 0 0 2 E 0 0 2 0 0 0 2 ESE 0 1 2 0 0 0 3 SE 0 2 7 0 0 0 9 SSE 0 0 0 1 0 0 1 s 0 0 0 0 O* 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 1 1 0 0 2 WSW 0 0 1 2 0 0 3 w 0 0 2 2 0 0 4 WNW 0 0 0 3 0 0 3 NW 0 0 3 5 2 0 10 NNW 0 1 5 6 1 0 13 Variable 0 0 0 0 0 0 0 Total 0 6 29 25 5 0 65 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 107 of 162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 7 5 0 0 12 NNE 0 0 4 0 0 0 4 NE 0 2 3 0 1 0 6 ENE 0 2 5 0 0 0 7 E 0 1 3 0 0 0 4 ESE 0 1 3 0 0 0 4 SE 0 10 4 0 0 0 14 SSE 0 2 .1 4 1 0 8 s 0 0 0 0 0 0 0 SSW 0 0 1 4 0 0 5 SW 0 0 1 1 0 0 2 WSW 0 0 3 3 2 0 8 w 0 0 1 3 0 0 4 WNW 0 0 4 4 2 0 10 NW 0 1 9 7 2 1 20 NNW 0 2 3 5 0 0 10 Variable 0 0 0 0 0 0 0 Total 0 21 52 36 8 1 118 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 108of162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 17 78 27 1 0 127 NNE 5 15 22 4 11 0 57 NE 1 12 22 7 1 0 43 ENE 1 12 23 0 0 0 36 E 4 16 15 1 0 0 36 ESE 6 39 9 0 0 0 54 SE 3 41 12 0 0 0 56 SSE 3 22 23 17 0 0 65 s 1 21 29 23 4 0 78 SSW 6 16 33 24 5 0 84 SW 2 21 25 10 0 0 58 WSW 4 12 28 11 1 0 56 w 4 10 22 13 1 0 50 WNW 4 23 42 47 11 0 127 NW 3 22 40 42 8 0 115 NNW 4 10 58 22 6 0 100 Variable 0 0 0 0 0 0 0 Total 55 309 481 248 49 0 1142 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 109 of 162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 4 8 1 0 0 16 NNE 0 8 10 0 0 0 18 NE 6 6 1 0 0 0 13 ENE 1 23 3 0 0 0 27 E 7 16 6 0 0 0 29 ESE 9 29 2 0 0 0 40 SE 5 12 1 0 0 0 18 SSE 4 15 15 4 0 0 38 s* 5 8 27 7 0 0 47 SSW 2 15 46 21 0 0 84 SW 3 17 19 12 0 0 51 WSW 4 21 25 8 0 0 58 w 6 9 12 11 0 0 38 WNW 3 15 23 0 0 0 41 NW 2 ;I. 0 11 0 0 0 23 NNW 5 2 3 0 0 0 10 Variable 0 0 0 0 0 0 0 Total 65 210 212 64 0 0 551 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 110 of 162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 1 0 0 0 2 NNE 4 4 1 0 0 0 9 NE 7 11 3 0 0 0 21 ENE 2 4 0 0 0 0 6 E 1 2 0 0 0 0 3 ESE 0 0 0 0 0 0 0 SE 2 2 0 0 0 0 4 SSE 0 8 0 0 0 0 8 s 1 10 5 0 0 0 16 SSW 3 9 4 0 0 0 16 SW 2 13 1 0 0 0 16 WSW 1 7 10 1 0 0 19 w 0 10 1 0 0 0 11 WNW 1 10 4 0 0 0 15 NW 2 5 4 0 0 0 11 NNW 0 2 .1 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 26 98 35 1 0 0 160 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4

  • Page 111of162

Clinton Power Station Period of Record.: January - March 2015 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at *10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 1 2 0 0 0 0 3 NE 4* 15 0 0 0 0 19 ENE 2 3 0 0 0 0 5 E 0 0 0 0 0 0 0 ESE 1 0 0 0 0 0 1 SE 0 1 0 0 0 0 1 SSE 0 0 0 0 0 0 0 s 1 1 0 0 0 0 2 SSW 0 3 0 0 0 0 3 SW 1 2 0 0 0 0 3 WSW 0 1 0 0 0 0 1 w 2 5 0 0 0 0 7 WNW 0 3 0 0 0 0 3 NW 0 4 0 0 0 0 4 NNW 1 1 0 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 13 41 0 0 0 0 54 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements "in all stability classes: 4 Page 112 of 162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 10 4 0 15 NNE 0 0 0 2 0 0 2 NE 0 0 0 0 1 1 2 ENE 0 0 1 3 1 0 5 E 0 0 0 1 0 0 *l ESE 0 0 0 1 0 0 1 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 1 1 2 s 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 3 1 0 4 w 0 0 0 1 0 0 1 WNW 0 0 0 1 0 0 1 NW 0 0 0 6 1 3 10 NNW 0 0 0 13 1 2 16 Variable 0 0 0 0 0 0 0 Total 0 0 2 41 10 7 60 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 113of162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 8 1 1 11 NNE 0 0 0 0 0 1 1 NE 0 0 0 0 0 0 0 ENE 0 1 1 0 1 0 3 E 0 0 1 1 0 0 2 ESE 0 0 6 1 0 0 7 SE 0 0 5 0 0 0 5 SSE 0 0 0 0 0 1 1 s 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 2 0 0 2 WSW 0 0 0 1 2 0 3 w 0 0 0 4 0 0 4 WNW 0 0 0 1 2 0 3 NW 0 0 1 7 2 1 11 NNW 0 0 2 9 0 1 12 Variable 0 0 0 0 0 0 0 Totai 0 1 17 34 8 5 65 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 114 of 162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 3 7 2 0 12 NNE 0 0 3 1 0 0 4 NE 0 1 4 0 0 1 6 ENE 0 1 2 1 3 0 7 E 0 0 2 2 0 0 4 ESE 0 0 3 3 0 0 6 SE 0 7 6 0 0 0 13 SSE 0 1 1 0 4 1 7 s 0 0 0 0 0 0 0 SSW 0 0 1 2 1 0 4 SW 0 0 0 1 2 0 3 WSW 0 0 1 3 2 2 8 w 0 0 0 1 3 0 4 WNW 0 0 1 3 3 3 10 NW 0 0 4 8 5 3 20 NNW 0 0 3 6 1 0 10 Variable 0 0 0 0 0 0 0 Total 0 10 34 38 26 10 118 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 115 of 162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 13 29 74 10 3 130 NNE 2 10 9 13 2 7 43 NE 3 8 10 7 9 8 45 ENE 1 6 9 15 9 0 40 E 0 4 12 10 7 0 33 ESE 0 19 29 7 5 0 60 SE 3 28 28 6 1 0 66 SSE 0 10 12 20 11 4 57 s 0 13 21 8 25 9 76 SSW 2 7 12 37 11 4 73 SW 3 15 25 21 4 3 71 WSW 1 8 17 18 11 2 57 w 2 5 10 23 7 1 48 WNW 4 15 17 33 36 18 123 NW 0 15 19 39 37 11 121 NNW 2 8 27 44 11 7 99 Variable 0 0 0 0 0 0 0 Total 24 184 286 375 196 77 1142 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 116 of 162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 3 5 4 0 16 NNE 1 1 5 9 0 0 16 NE 0 1 2 4 1 0 8 ENE 2 2 6 3 1 0 14 E 2 4 10 12 2 0 30 ESE 2 6 25 16 1 0 50 SE 2 8 12 1 0 0 23 SSE 2 8 12 15 2 2 41 s 2 4 5 14 17 2 44 SSW 1 3 6 41 24 1 76 SW 2 0 14 28 19 1 64 WSW 0 0 8 22 15 0 45 w 1 3 6 13 18 2 43 WNW 1 3 5 24 4 0 37 NW 0 12 8 14 0 0 34 NNW 1 3 2 6 0 0 12 Variable 0 0 0 0 0 0 0 Total 19 62 129 227 108 8 553 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 117of162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 0 3 0 0 4 NNE 0 1 2 3 0 0 6 NE 0 0 1 3 3 0 7 ENE 0 0 7 5 0 0 12 E 0 3 4 3 0 0 10 ESE 0 0 2 0 0 0 2 SE 0 2 2 0 0 0 4 SSE 0 0 0 1 0 0 1 s 0 2 3 7 5 0 17 SSW 1 0 4 8 1 0 14 SW 0 0 1 15 2 0 18 WSW. 0 2 3 6 9 1 21 w 1 0 5 4 1 0 11 WNW 0 0 2 16 1 0 19 NW 1 0 4 6 1 0 12 NNW 0 0 0 3 0 0 3 Variable 0 0 0 0 0 0 0 Total 3 11 40 83 23 1 161 Hours of calm in this stability class:* 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 118 of 162

Clinton Power Station Period of Record: January - March 2015 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 2 0 0 2 NNE 0 0 1 0 0 0 1 NE 0 0 4 0 0 0 4 ENE 0 0 5 6 0 0 11 E 0 2 3 6 0 0 11 ESE 0 0 1 0 0 0 1 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 SSW 0 2 1 0 0 0 3 SW 0 0 2 0 0 0 2 WSW 1 1 2 1 0 0 5 w 0 0 2 2 0 0 4 WNW 0 0 1 5 0 0 6 NW 1 0 0 3 0 0 4 NNW 0 1 0 1 0 0 2 Variable 0 0 0 0 0 0 0 Total 2 6 22 26 0 0 56 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 119 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 4 0 0 6 NNE 0 0 1 3 0 0 4 NE 0 0 0 5 0 0 5 ENE 0 0 2 0 0 0 2 E 0 1 0 3 0 0 4 ESE 0 0 0 0 0 0 0 SE 0 0 1 0 0 0 1 SSE 0 0 0 0 0 0 0 s 0 0 1 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 0 1 0 0 1 WSW 0 0 1 5 1 0 7 w 0 0 0 4 5 0 9.

WNW 0 0 1 1 0 0 2 NW 0 0 7 1 0 0 8 NNW 0 0 4 2 0 0 6 Variable 0 0 0 0 0 0 0 Total 0 1 20 29 6 0 56 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 120 of 162

Clinton Power Station Period of Record: April - June .2015 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 8 2 0 0 10 NNE 0 0 2 4 0 0 6 NE 0 0 4 0 0 0 4 ENE 0 3 4 0 0 0 7 E 0 3 1 2 0 0 6 ESE 0 1 0 0 0 0 1 SE 0 0 2 0 0 0 2 SSE 0 3 1 0 0 0 4 s 0 0 4 0 0 0 4 SSW 0 0 1 5 0 0 6 SW 0 0 0 3 0 0 3 WSW 0 0 1 1 1 0 3 w 0 0 2 5 1 0 8 WNW 0 1 4 2 1 0 8 NW 0 0 6 2 0 0 8 NNW 0 0 2 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 11 42 26 3 0 82 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 121 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 3 2 0 0 6 NNE 0 5 2 3 0 0 10 NE 0 1 7 0 0 0 8 ENE 0 4 3 0 0 0 7 E 0 2 1 0 0 0 3 ESE 0 3 0 0 0 0 3 SE 0 2 1 0 0 0 3 SSE 0 2 3 1 0 0 6 s 0 4 4 1 0 0 9 SSW 0 1 3 5 0 0 9 SW 0 1 11 1 0 0 13 WSW 0 1 9 1 1 0 12 w 0 1 4 1 2 0 8 WNW 0 3 5 5 1 0 14 NW 1 4 6 3 0 0 14 NNW 0 3 3 0 0 0 6 Variable 0 0 0 0 0 0 0 Total 1 38 65, 23 4 0 131 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 122 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 8 18 6 0 0 33 NNE 3 14 39 10 0 0 66 NE 4 25 42 11 0 0 82 ENE 4 28 20 1 0 0 53 E 5 13 8 0 0 0 26 ESE 6 17 6 0 0 0 29 SE 5 14 12 0 0 0 31 SSE 6 39 45 6 0 0 96 s 3 33 55 23 0 0 114 SSW 3 12 73 38 3 0 129 SW 0 26 62 14 1 0 103 WSW 3 6 18 3 2 0 32 w 2 12 13 16 20 1 64 WNW 1 15 17 6 3 0 42 NW 2 12 19 6 2 0 41 NNW 0 15 14 0 0 0 29 Variable 0 0 0 0 0 0 0 Total 48 289 461 140 31 1 970 Hours of calrh in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 123 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 15 5 1 0 0 24 NNE 4 13 7 0 0 0 24 NE 3 26 8 0 0 0 37 ENE 2 32 9 *o 0 0 43 E 10 12 3 0 0 0 25 ESE 11 22 2 0 0 0 35 SE 4 41 3 0 0 0 48 SSE 5 48 18 2 0 0 73 s 7 40 43 8 3 0 101 SSW 4 29 62 10 1 0 106 SW 7 21 25 7 0 0 60 WSW 2 9 18 2 0 0 31 w 1 13 13 3 0 0 30 WNW 6 12 7 1 0 0 26 NW 2 11 15 3 0 0 31 NNW 5 5 3 0 0 0 13 Variable 0 0 0 0 0 0 0 Total 76 349 241 37 4 0 707 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 124 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 8 0 0 0 0 12 NNE 3 8 2 0 0 0 13 NE 7 25 0 0 0 0 32 ENE 3 2 0 0 0 0 5 E 2 2 0 0 0 0 4 ESE 2 1 0 0 0 0 3 SE 4 8 0 0 0 0 12 SSE 3 12 0 0 0 0 15 s 6 4 1 0 0 0 11 SSW 3 4 0 1 0 0 8 SW 5 8 0 0 0 0 13 WSW 1 3 0 0 0 0 4 w 1 3 3 0 0 0 7 WNW 4 3 0 0 0 0 7 NW 1 4 0 0 0 0 5 NNW 3 2 0 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 52 97 6 1 0 0 156 Hours of calm in this stability class: 1 Hours of missing wind.measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 125 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 5 5 0 0 0 0 10 NE 7 11 0 0 0 0 18 ENE 6 0 0 0 0 0 6 E 1 0 0 0 0 0 1 ESE 3 1 0 0 0 0 4 SE 6 0 0 0 0 0 6 SSE 2 1 0 0 0 0 3 s 0 0 0 0 0 0 0 SSW 2 0 0 0 0 0 2 SW 2 0 0 0 0 0 2 WSW 2 3 0 0 0 0 5 w 3 0 0 0 0 0 3 WNW 5 0 0 0 0 0 5 NW 2 0 0 0 0 0 2 NNW 1 1 0 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 47 22 0 0 0 0 69 Hours of calm in this stability class: 5 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 126 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 4 0 0 5 NNE 0 0 0 3 2 0 5 NE 0 0 0 3 2 0 5 ENE 0 0 2 0 0 0 2 E 0 0 0 0 3 0 3 ESE 0 0 0 1 0 0 1 SE 0 0 1 0 0 0 1 SSE 0 0 0 0 0 0 0 s 0 0 0 1 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 1 0 1 WSW 0 0 0 4 2 1 7 w 0 0 0 0 3 4 7 WNW 0 0 0 0 2 1 3 NW 0 0 1 6 0 0 7 NNW 0 0 2 6 0 0 8 Variable 0 0 0 0 0 0 0 Total 0 0 7 28 15 6 56 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 127 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

'Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 4 4 2 0 10 NNE 0 0 2 3 1 0 6 NE 0 0 0 2 1 0 3 ENE 0 0 4 3 0 0 7 E 0 0 5 0 2 1 8 ESE 0 0 1 0 0 0 1 SE 0 0 1 1 0 0 2 SSE 0 0 4 1 0 0 5 s 0 0 2 2 0 0 4 SSW 0 0 0 2 4 0 6 SW 0 0 0 2 0 0 2 WSW 0 0 0 2 0 1 3 w 0 0 0 2 5 1 8 WNW 0 0 1 4 2 1 8 NW 0 0 4 3 1 0 8 NNW 0 0 0 1 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 0 28 32 18 4 82 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 128 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 4 0 0 6 NNE 0 2 3 2 2 0 9 NE 0 1 4 3 0 0 8 ENE 0 0 4 3 0 0 7 E 0 1 2 0 1 0 4 ESE 0 0 3 0 0 0 3 SE 0 1 1 1 0 0 3 SSE 0 1 1 3 1 0 6 s 0 0 7 2 1 0 10 SSW 0 1 3 3 1 0 8 SW 0 0 8 4 0 0 12 WSW 0 0 6 5 1 1 13 w 0 0 1 4 1 2 8 WNW 0 1 4 3 5 1 14 NW 0 4 3 5 2 0 14 NNW 0 2 3 1 0 0 6 Variable 0 0 0 0 0 0 0 Total 0 14 55 43 15 4 131 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 129 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind.Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 15 12 6 0 35 NNE 0 6 16 21 4 2 49 NE 2 7 18 38 13 4 82 ENE 1 7 20 26 3 0 57 E 2 6 12 9 3 0 32 ESE 2 12 10 10 3 0 37 SE 3 10 11 11 1 0 36 SSE 3 10 27 38 11 1 90 s 3 11 30 45 18 11 118 SSW 0 4 31 51 29 4 119 SW 2 9 36 44 10 2 103 WSW 2 7 10 13 4 4 40 w 1 5 11 12 11 22 62 WNW 2 6 10 16 3 5 42 NW 0 2 17 12 6 2 39 NNW 0 3 14 12 0 0 29 Variable 0 0 0 0 0 0 0 Total

  • 23 107 288 370 125 57 970 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 130 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 5 4 11 1 0 22 NNE 0 0 9 7 1 0 17 NE 1 2 11 13 2 0 29 ENE 0 3 23 13 1 0 40 E 2 6 3 20 3 0 34 ESE 1 3 13 14 0 0 31 SE 0 5 28 7 0 0 40 SSE 0 8 34 26 12 0 80 s 1 3 29 60 12 6 111 SSW 1 8 16 41 24 2 92 SW 2 3 25 28 10 1 69 WSW 2 4 7 13 8 0 34 w 0 1 10 13 7 1 32 WNW 0 5 13 8 3 0 29 NW 1 3 7 13 9 0 33 NNW 0 5 7 4 0 0 16 Variable 0 0 0 0 0 0 0 Total 12 64 239 291 93 10 709 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 131'of162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 5 1 0 0 8 NNE 0 1 6 8 0 0 15 NE 0 1 10 15 0 0 26 ENE 0 1 6 4 0 0 11 E 0 0 3 1 0 0 4 ESE 0 0 4 1 0 0 5 SE 1 2 2 0 0 0 5 SSE 0 0 2 5 0 0 7 s 1 7 7 9 0 0 24 SSW 0 2 2 1 0 1 6 SW 1 4 3 5 0 0 13 WSW 1 2 6 2 0 0 11 w 0 1 3 1 0 0 5 WNW 0 2 1 4 1 0 8 NW 0 0 4 2 0 0 6 NNW 0 0 3 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 4 25 67 59 1 1 157 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 132 of 162

Clinton Power Station Period of Record: April - June 2015 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 1 2 6 0 0 0 9 NE 0 1 7 5 0 0 13 ENE 1 1 5 3 0 0 10 E 0 1 1 2 0 0 4 ESE 0 2 3 0 0 0 5 SE 0 3 2 0 0 0 5 SSE 0 1 2 0 0 0 3 s 1 2 0 0 0 0 3 SSW 0 2 3 0 0 0 5 SW 2 0 4 2 0 0 8 WSW 0 1 1 0 0 0 2 w 0 0 0 1 0 0 1 WNW 1 1 0 0 0 0 2 NW 0 1 1 0 0 0 2 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 6 18 35 13 0 0 72 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 133 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 10 1 0 0 11 NNE 0 0 0 1 0 0 1 NE 0 0 5 3 0 0 8 ENE 0 1 0 0 0 0 1 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 1 1 0 0 0 2 SSE 0 1 1 0 0 0 2 s 0 0 12 3 0 0 15 SSW 0 1 5 0 0 0 6 SW 0 1 2 0 0 0 3 WSW 0 0 1 1 0 0 2 w 0 0 5 3 0 0 8 WNW 0 0 9 7 0 0 16 NW 0 1 6 0 0 0 7 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 6 57 19 0 0 82 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 134 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 7 0 0 0 8 NNE 0 1 1 1 0 0 3 NE 0 1 8 1 0 0 10 ENE 0 2 2 0 0 0 4 E 0 2 3 0 0 0 5 ESE 0 1 0 0 0 0 1 SE 0 4 0 0 0 0 4 SSE 0 9 0 0 0 0 9 s 0 9 7 2 0 0 18 SSW 0 2 6 1 0 0 9 SW 0 5 2 0 0 0 7 WSW 0 0 3 0 0 0 3 w 0 4 3 1 0 0 8 WNW 0 0 4 2 0 0 6 NW 0 3 10 1 0 0 14 NNW 0 0 3 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 44 59 9 0 0 112 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 135 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured. at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 9 0 0 0 10 NNE 0 5 4 1 0 0 10 NE 0 8 4 0 0 0 12 ENE 0 8 0 0 0 0 8 E 0 4 3. 0 0 0 7 ESE 0 1 0 0 0 0 1 SE 0 7 0 0 0 0 7 SSE 0 10 3 0 0 0 13 s 0 8 11 1 0 0 20 SSW 0 5 3 3 0 0 11 SW 0 12 5 0 0 0 17 WSW 0 13 6 0 0 0 19 w 0 8 5 .o 0 0 13 WNW 0 3 9 1 0 0 13 NW 0 4 10 1 0 0 15 NNW 1 4 5 0 0 0 10 Variable 0 0 0 0 0 0 0 Total 1 101 77 7 0 0 186 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 136 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 13 14 0 0 0 29 NNE 1 14 8 23 0 0 46 NE 3 35 15 0 0 0 53 ENE 2 19 3 0 0 0 24 E. 5 26 1 0 0 0 32 ESE 9 17 1 0 0 0 27 SE 8 26 3 0 0 0 37 SSE 4 35 20 0 0 0 59 s 7 43 24 2 0 0 76 SSW 4 29 14 2 0 0 49 SW 5 33 28 1 0 0 67 WSW 3 13 13 2 0 0 31 w 1 11 9 0 0 0 21 WNW 4 20 6 0 0 0 30 NW 1 14 n 3 0 0 29 NNW 1 11 8 0 0 0 20 Variable 2 0 0 0 0 0 2 Total 62 359 178 33 0 0 632 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 137 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 17 0 0 0 0 18 NNE 4 22 10 2 0 0 38 NE 11 23 7 0 0 0 41 ENE 6 20 6 0 0 0 32 E 18 14 2 0 0 0 34 ESE 19 12 2 0 0 0 33 SE 14 29 1 0 0 0 44 SSE 19 65 11 0 0 0 95 s 7 66 16 1 0 0 90 SSW 7 63 12 3 0 0 85 SW 8 27 17 0 0 0 52 WSW 10 13 14 1 0 0 38 w 10 13 7 1 0 0 31 WNW 5 35 4 0 0 0 44 NW 3 23 4 0 0 .0 30 NNW 1 15 2 0 0 0 18 Variable 0 2 0 0 0 0 2 Total 143 459 115 8 0 0 725 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability tlasses: 21 Page 138 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 5 0 0 0 0 8 NNE 4 2 0 0 0 0 6 NE 19 22 1 0 0 0 42 ENE 22 9 0 0 0 0 31 E 14 3 0 0 0 0 17 ESE 9 8 0 0 0 0 17 SE 6 10 0 0 0 0 16 SSE 3 16 0 0 0 0 19 s 5 9 0 0 0 0 14 SSW 9 22 0 0 0 0 31 SW 6 15 1 0 0 0 22 WSW 7 1 2 0 0 0 10 w 1 5 0 0 0 0 6 WNW 3 9 0 0 0 0 12 NW 7 9 0 0 0 0 16 NNW 2 3 0 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 120 148 4 0 0 0 272 Hours of calm in this stability class: 8 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 139 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 1 0 0 0 0 5 NNE 16 4 0 0 0 0 20 NE 36 21 0 0 0 0 57 ENE 17 2 0 0 0 0 19 E 9 0 0 0 0 0 9 ESE 1 2 0 0 0 0 3 SE 2 0 0 0 0 0 2 SSE 2 0 0 0 0 0 2 s 2 1 0 0 0 0 3 SSW 2 0 0 0 0 0 2 SW 3 2 0 0 0 0 5 WSW 4 2 0 0 0 0 6 w 1 0 0 0 0 0 1 WNW 10 0 0 0 0 0 10 NW 4 0 0 0 0 0 4 NNW 10 1 0 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 123 36 0 0 0 0 159 Hours of calm in this stability class: 8 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 140 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 3 7 1 0 11 NNE 0 0 0 0 0 0 0 NE 0 0 0 7 2 0 9 ENE 0 1 0 0 0 0 1 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 2 0 0 0 2 SSE 0 0 1 1 0 0 2 s 0 0 3 10 3 0 16 SSW 0 0 4 r 0 0 5 SW 0 0 3 1 0 0 4 WSW 0 0 0 1 0 0 1 w 0 0 0 7 0 0 7 WNW 0 0 1 10 6 0 17 NW 0 1 2 4 0 0 7 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 2 19 49 12 0 82 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 141 of 162

Page 142 of 162 Clinton Power Station Period of Record: July - September 2015 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 3 6 0 0 9 NNE 0 2 5 2 0 0 9 NE 0 4 6 1 1 0 12 ENE 0 3 3 1 0 0 7 E 0 5 3 3 0 0 11 ESE 0 1 0 0 0 0 1 SE 0 6 1 0 0 0 7 SSE 0 2 8 1 0 0 11 s 0 5 9 6 1 0 21 SSW 0 2 6 0 2 1 11 SW 0 9 5 5 0 0 19 WSW 0 9 8 0 0 0 17 w 0 5 6 2 0 0 13 WNW 0. 2 6 4 1 0 13 NW 0 2 7 4 0 0 13 NNW 0 1 6 5 0 0 12 Variable 0 0 0 0 0 0 0 Total 0 58 82 40 5 1 186 Hours of calm in this stability class: 0 Hours of missing wind measurements in.this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 143 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in .mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 3 14 9 0 0 27 NNE 0 6 6 7 14 0 33 NE 1 10 24 13 6 0 54 ENE 1 11 13 10 0 0 35 E 4 15 7 3 0 0 29 .

ESE 3 18 11 3 0 0 35 SE 7 22 5 4 0 0 38 SSE 2 9 16 16 1 0 44 s 5 36 22 20 7 0 90 SSW 5 17 14 9 1 0 46 SW 1 13 26 22 0 0 62 WSW 1 14 10 10 1 0 36 w 0 9 5 9 1 0 24 WNW 2 9 12 6 0 0 29 NW 1 7 10 6 3 0 27 NNW 0 6 11 5 0 0 22 Variable 1 0 0 0 0 0 1 Total 35 205 206 152 34 0 632 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 144 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 14 4 0 0 20 NNE 0 1 13 7 4 0 25 NE 4 2 13 13 2 0 34 ENE 0 7 13 15 0 0 35 E 2 9 12 6 0 0 29 ESE 0 11 21 3 0 0 35 SE 0 28 14 3 0 0 45 SSE. 0 15 50 16 0 0 81 s 0 9 32 60 2 0 103 SSW 1 7 43 33 6 0 90 SW 1 12 22 25 0 0 60 WSW 0 8 16 16 1 0 41 w 1 5 10 7 2 0 25 WNW 1 3 18 20 0 0 42 NW 1 8 15 15 0 0 39 NNW 0 3 12 5 0 0 20 Variable 0 1 1 0 0 0 2 Total 11 131 319 248 17 0 726 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classei: 21 Page 145 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 7 1 0 0 9 NNE 0 0 3 2 0 0 *5 NE 2 3 2 8 1 0 16 ENE 1 4 12 9 0 0 26 E 1 5 17 4 0 0 27 ESE 0 11 5 4 0 0 20 SE 0 12 9 0 0 0 21 SSE 1 10 10 3 0 0 24 s 0 5 12 8 0 0 25 SSW 0 2 13 12 0 0 27 SW 1 4 6 14 0 0 25 WSW 1 4 5 3 1 0 14 w 1 2 5* 3 0 0 11 WNW 1 0 5 5 0 0 11 NW 0 3 4 2 0 0 9 NNW 0 2 3 5 0 0 10 Variable 0 0 0 0 0 0 0 Total 9 68 118 83 2 0 280 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 146 of 162

Clinton Power Station Period of Record: July - September 2015 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 4 5 1 0 0 10 NNE 0 5 2 2 0 0 9 NE 1 0 1 1 0 0 3 ENE 0 1 8 7 0 0 16 E 0 2 14 12 0 0 28 ESE 0 10 18 4 0 0 32 SE 1 12 4 0 0 0 17 SSE 0 9 2 0 0 0 11 s 0 7 5 0 0 0 12 SSW 0 6 0 0 0 0 6 SW 1 4 0 0 0 0 5 WSW 1 1 4 5 0 0 11 w 1 0 1 0 0 0 2 WNW 0 0 0 0 0 0 0 NW 1 2 0 0 0 0 3 NNW 0 1 1 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 6 64 65 32 0 0 167 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 21 Page 147of162

Clinton Power Station Period of Record: October - December2015 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 3 0 0 4 NNE 0 0 1 2 0 0 3 NE 0 0 4 5 0 0 9 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 SSW 0 1 0 0 0 0 1 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 4 1 0 5 NW 0 0 0 4 0 0 4 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 1 6 18 1 0 26 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 148 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 2 1 0 0 4 NNE 0 0 5 5 0 0 10 NE 0 0 4 3 0 0 7 ENE 0 0 0 0 0 0 0 E 0 0 3 0 0 0 3 ESE 0 0 0 0 0 0 0 SE 0 0 1 0 0 0 1 SSE 0 0 0 0 0 0 0 s 0 0 1 0 0 0 1 SSW 0 0 1 4 0 0 5 SW 0 0 2 2 0 0 4 WSW 0 0 0 3 0 0 3 w 0 0 1 6 0 0 7

'WNW 0 0 0 4 2 0 6 NW 0 0 2 3 0 0 5 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 1 23 31 2 0 57 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 149 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 1 1 0 0 3 NNE 0 0 3 0 0 0 3 NE 0 0 3 3 0 0 6 ENE 0 2 0 0 0 0 2 E 0 0 2 0 0 0 2 ESE 0 0 0 0 0 0 0 SE 0 4 2 0 0 0 6 SSE 0 2 0 0 0 0 2 s 0 1 0 1 0 0 2 SSW 0 1 3 5 1 0 10 SW 0 1 4 6 0 0 11 WSW 0 1 7 1 1 0 10 w 0 3 5 4 5 0 17 WNW 0 0 0 4 2 0 6 NW 0 0 2 3 0 0 5 NNW 0 0 0 1 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 16 32 29 9 0 86 Hours cif calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 3 Page 150 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 7 10 12 0 0 29 NNE 4 8 27 30 4 0 73 NE 1 6 42 20 5 0 74 ENE 0 5 20 3 9 0 37 E 1 5 22 2 0 0 30 ESE 1 16 12 0 0 0 29 SE i 32 38 7 0 0 78 SSE 1 20 47 17 3 0 88 s 0 21 49 37 5 0 112 SSW 1 15 36 39 16 0 107 SW 0 11 10 21 4 0 46 WSW 0 22 22 16 6 4 70 w 2 4 49 48 10 3 116 WNW 2 6 42 27 0 0 77 NW 0 7 16 18 1 0 42 NNW 0 1 7 1 1 0 10

. Variable 0 0 0 0 0 0 0 Total 14 186 449 298 64 7 1018 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 151 of l62

Page 152 of 162 Clinton Power Station Period of Record: October - December2015 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 4 0 0 0 0 8 NNE 4 2 0 0 0 0 6 NE 4 6 0 0 0 0 10 ENE 2 3 0 0 0 0 5 E 0 1 0 0 0 0 1 ESE 1 1 0 0 0 0 2 SE 1 5 0 0 0 0 6 SSE 1 6 3 0 0 0 10 s 0 7 3 0 0 0 10 SSW 1 18 7 0 0 0 26 SW 3 7 1 0 0 0 11 WSW 1 4 4 0 0 0 9 w 0 5 1 0 0 0 6 WNW 1 20 1 0 0 0 22 NW 4 11 6 0 0 0 21 NNW 3 2 0 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 30 102 26 0 0 0 158 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 153 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 10 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 1 0 0 0 0 5 NNE 2 5 0 0 0 0 7 NE 6 13 0 0 0 0 19 ENE 4 3 0 0 0 0 7 E 3 0 0 0 0 0 3 ESE 1 0 0 0 0 0 1 SE 1 1 0 0 0 0 2 SSE 0 3 0 0 0 0 3 s 1 3 0 0 0 0 4 SSW 2 2 0 0 0 0 4 SW 1 1 0 0 0 0 2 WSW 3 0 0 0 0 0 3 w 2 4 0 0 0 0 6 WNW 3 2 0 0 0 0 5 NW 5 3 0 0 0 0 8 NNW 2 0 0 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 40 41 0 0 0 0 81 Hours of calm in this stability class: 3 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 154 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Extremely Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 1 2 0 3 NNE 0 0 1 1 1 1 4 NE 0 0 0 5 2 1 8 ENE 0 0 0 0 0 1 1 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 O*

SSW 0 1 0 0 0 0 1 SW 0 0 0 0 .0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 3 1 1 5 NW 0 0 0 4 0 0 4 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 1 1 14 6 4 26 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 155 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Moderately Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 3 0 0 3 NNE 0 0 2 2 1 0 5 NE 0 0 2 7 2 2 13 ENE 0 0 0 0 0 0 0 E 0 0 0 2 0 0 2 ESE 0 0 0 0 1 0 1 SE 0 0 1 0 0 0 1 SSE 0 0 0 0 0 0 0 s 0 0 1 0 0 0 1 SSW 0 0 0 1 4 0 5 SW 0 0 0 4 0 0 4 WSW 0 0 0 0 3 0 3 w 0 0 1 3 3 0 7 WNW 0 0 0 3 1 2 6 NW 0 0 1 2 2 0 5 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 0 9 27 17 4 57 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 156 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Slightly Unstable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13:-18 19-24 > 24 Total N 0 2 1 0 1 0 4 NNE 0 0 0 0 0 0 0

  • NE 0 0 2 3 3 0 8 ENE 0 1 1 1 0 0 3 E 0 0 O* 2 0 0 2 ESE 0 0 0 0 0 0 0 SE 0 5 3 0 0 0 8 SSE 0 0 0 0 0 0 0 s 0 1 1 0 1 0 3 SSW 0 0 1 5 2 1 9 SW 0 1 1 10 0 0 12 WSW 0 0 6 2 1 1 10 w 0 1 2 6 2 6 17 WNW 0 0 0 1 2 2 5 NW 0 0 0 3 1 0 4 NNW 0 0 1 1 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 11 19 34 13 10 87 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 157 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Neutral - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 7 9 7 0 25 NNE 0 2 5 24 18 1 50 NE 0 3 11 32 21 18 85 ENE 0 3 3 19 9 13 47 E 0 3 0 17 7 2 29 ESE 0 4 11 12 6 0 33 SE 1 10 26 30 9 2 78 SSE 0 11 14 31 17 10 83 s 1 6 26 27 33 21 114 SSW 0 6 24 32 24 15 101 SW 0 6 9 9 15 7 46 WSW 2 7 17 16 13 11 66 w 1 3 14 47 36 13 114 WNW 0 2 17 32 22 4 77 NW 0 2 9 18 14 1 44 NNW 0 0 1 6 2 0 9 Variable 0 0 0 0 0 0 0 Total 5 70 194 361 253 118 1001 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 17 Hours of missing stability measurements in all stability classes: 3 Page 158 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Slightly Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 3 4 3 0 0 10 NNE 0 0 11 9 6 0 26 NE 0 0 2 12 13 0 27 ENE 1 1 3 9 5 0 19 E 0 0 2 15 5 0 22 ESE 0 1 7 2 1 0 11 SE 0 1 13 7 7 6 34 SSE 1 1 18 49 19 10 98 s 0 2 18 77 65 15 177 SSW 0 2 21 41 29 4 97 SW 0 2 10 18 5 2 37 WSW 0 1 6 28 15 2 52 w 0 2 7 23 17 7 56 WNW 0 2 10 23 8 1 44 NW 0 4 9 16 0 0 29 NNW 0 1 10 14 0 0 25 Variable 0 0 0 0 0 0 0 Total 2 23 151 346 195 47 764 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 11 Hours of missing stability measurements in all stability classes: 3 Page 159 of 162

Clinton Power Station Period of Record: October - December2015 Stability Class - Moderately Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 2 3 0 0 6 NNE 0 2 3 1 0 0 6 NE 0 2 2 1 0 0 5 ENE 0 0 4 1 0 0 5 E 0 0 4 4 0 0 8 ESE 0 0 2 1 0 0 3 SE 1 1 1 0 0 0 3 SSE 1 0 3 3 1 0 8 s 1 0 3 7 1 0 12 SSW 0 0 0 13 2 0 15 SW 0 0 2 14 0 0 16 WSW 0 1 6 4 2 0 13 w 0 0 6 4 0 0 10 WNW 1 2 3 13 1 0 20 NW 1 0 7 10 0 0 18 NNW 0 0 4 5 0 0 9 Variable 0 0 0 0 0 0 0 Total 5 9 52 84 7 0 157 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability dlass: 0 Hours of missing stability measurements in all stability classes: 3 Page 160 of 162

Clinton Power Station Period of Record: October - Decernber2015 Stabill.ty Class - Extremely Stable - 60m-10m Delta-T (F)

Winds Measured at 60 Meters Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 1 0 1 0 0 4 NNE 0 5 4 1 0 0 10 NE 0 1 2 2 0 0 5 ENE 0 0 1 4 0 0 5 E 0 1 2 1 0 0 4 ESE 0 5 9 0 0 0 14 SE 0 3 1 0 0 0 4 SSE 1 0 1 0 0 0 2 s 1 2 1 5 0 0 9 SSW 0 3 3 2 0 0 8 SW 0 0 1 1 0 0 2 WSW 0 1 2 0 0 0 3 w 0 1 1 0 0 0 2 WNW 0 1 3 0 0 0 4 NW 0 0 2 2 0 0 4 NNW 0 2 2 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 4 26 35 19 0 0 84 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 Page 161 of 162

SECTION 12 CHANGES TO THE OFFSITE DOSE CALCULATION MANUAL The Offsite Dose Calculation Manual was last revised in December of 2015. Revision 25 of the ODCM is not included with this submittal since no updates were made in 2016.

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