RS-14-029, Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2008

Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2008

ML14030A290
Person / Time
Site:	Braidwood
Issue date:	12/31/2008
From:	Murray & Trettel
To:	Exelon Nuclear, Office of Nuclear Reactor Regulation
Shared Package
ML14030A308	List: ML14030A264 ML14030A266 ML14030A267 ML14030A268 ML14030A269 ML14030A273 ML14030A274 ML14030A275 ML14030A276 ML14030A278 ML14030A279 ML14030A280 ML14030A284 ML14030A285 ML14030A286 ML14030A287 ML14030A288 ML14030A289 ML14030A290 ML14030A291 ML14030A292 ML14030A293 ML14030A294 ML14030A295 RS-14-029, Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2008 RS-14-029, Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2009 RS-14-029, Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2011 RS-14-029, Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2012 RS-14-029, Braidwood Station Kankakee River Fish Monitoring Program, 1991-2013 - Tables Requested by the NRC to Describe the Number of Fish Caught by Sampling Gear and Species at Each Monitoring Location RS-14-029, Braidwood Station Kankakee River Fish Monitoring Program, 2010 RS-14-029, Braidwood Station, 2011 Benthos Monitoring and Historical Fish and Benthos Comparisons RS-14-029, Braidwood Station, Kankakee River Fish Monitoring Program, 2012 RS-14-029, Employment and Land Requirements for Alternatives to Byron Units 1 and 2 and Braidwood Units 1 and 2 - Lr Chapter 7 Energy Alternatives RS-14-029, Final Report: Characterization of Unionid Communities Near the Braidwood Nuclear Station Kankakee River Discharge Location RS-14-029, Final Report: Unionid Relocation Near the Braidwood Nuclear Station Kankakee River Discharge Location RS-14-029, Investigations to Determine Presence of State-Listed Species of Fish and Freshwater Mussels in the Kankakee River Near the Braidwood Nuclear Station Warmwater Discharge Channel RS-14-029, Monthly Report on the Meteorological Monitoring Program at the Braidwood Nuclear Generating Station RS-14-029, Plan Completion Report for the VB 1 Area RS-14-029, Plan Completion Report for the VB 2/3 and Pond Area RS-14-029, Plan Completion Report for the VB 4 Area RS-14-029, Plan Completion Report for the VB 6 Area RS-14-029, Plan Completion Report for the VB 7 Area RS-14-029, Standard Operating Procedures for Braidwood Station'S Fisheries Monitoring Program in the Kankakee River and Horse Creek RS-14-029, Status of Fish Communities and Sport Fishery in the Kankakee River and Tributary Streams: 2005 Basin Survey RS-14-029, Transmittal of Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2010 RS-14-029, Transmittal of Application for an Incidental Take Permit for Threatened or Endangered Species and Conservation Plan
References
RS-14-029
Download: ML14030A290 (53)

Text

Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2008 prepared for Exelon Nuclear Warrenville, IL 60555 by Murray and Trettel, Incorporated 600 First Bank Drive, Suite A Palatine, IL 60067 (847) 963-9000 e-mail: mt@weathercommand.com For Exelon Use Only Reviewed By:JlL Date" .Murray & Trettel, Inc. 6oo0 Frst Bank Drive, Suite A Palatine, Illinois 60067 (847)963-9ooo i Table of Contents Section Description Pane List of Tables ......................................................................................

ii I Introduction

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1 2 Summ ary .............................................................................................

2 3 Data Acquisition

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3 4 Data Analysis .....................................................................................

5 5 Results ............................................................................................

10 Site Calibration logs ...................................................................

Appendix Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 6o067 (847)963-9000 M&T 2008 ANNUAL REPORTS ON THE EXELON NUCLEAR METEOROLOGICAL MONITORING PROGRAM_. I approve the following draft report(s) with no changes: Dresden Station Zion Station LaSalle Station X Braidwood Station Byron Station Quad Cities Station Clinton Power Station Three Mile Island Generating Station Peach Bottom Atomic Power Station Limerick Generating Station Oyster Creek Generating Station Victoria County I approve the following draft report(s) with the indicated changes (comments attached):

Dresden Station Zion Station LaSalle Station Braidwood Station Byron Station Quad Cities Station Clinton Power Station Three Mile. Island Generating Station Peach Bottom Atomic Power Station Limerick Generating Station Oyster Creek Generating Station Victoria County Signature Date GSRPD, EXELON NUCLEAR 4300 WINFIELD ROAD WARRENVILLE IL 60555 Murray & Trettel, Inc. 600 First Bank Drive, Suite A Palatine, Illinois 6o067 (847) 963-9000 List of Tables Number Description Paqe 1 Instrument Locations

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

4 2 Data Loggers .....................................................................................

4 3 W ind Direction Classes ....................................................................

7 4 W ind Speed Classes .........................................................................

7 5 Atmospheric Stability Classes ..........................................................

8 8 Data Recovery Summary ..............................................................

11 7 W ind Rose, January-March 2008 ..................................................

14 8 W ind Rose, April-June 2008 ..........................................................

16 9 W ind Rose, July-September 2008 ..................................................

18 10 W ind Rose, October-December 2008 ............................................

20 11 W ind Rose, January-December 2008 ............................................

22 12 Precipitation Totals .........................................................................

24 13 Maximum Doses Resulting From Airborne Releases .....................

25 Murray & Trettel, Inc. 6oo First Bank Driue, Suite A Palatine, Illinois 6oo67 (847)963-gooo Introduction The purpose of the meteorological program being conducted at the Braidwood Station site is to provide information sufficient to assess the local weather conditions and to determine the degree of atmospheric dispersion of airborne radioactive effluent from the station.The meteorological tower is 320 ft. high and is Instrumented at two levels. Wind speed and direction are measured at 34 ft. and 203 ft. Ambient temperature is measured at 30 ft. Differential temperature, referenced to 30 ft., is measured at 199 ft. Dew point temperature is measured at 30 ft. Precipitation is measured at approximately 3 ft.Joint frequency stability wind rose tables of wind direction, wind speed, and stability are routinely tabulated from hourly measurements.

The quarterly and annual tables are included in this report.Descriptions of the instruments and data loggers are given in Section 3 (Data Acquisition) of this report. Data reduction and processing are described in Section 4 (Data Analysis).

The results given in Section 5 of this report include modeled maximum whole body doses, skin doses, organ doses based upon airborne releases, and site meteorology.

Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 6oo67 (847)963-9oo0 2. Summary The Braidwood Station meteorological monitoring program produced 52,333 hours0.00385 days <br />0.0925 hours <br />5.505952e-4 weeks <br />1.267065e-4 months <br /> of valid data out of a possible 52,704 parameter hours during 2008 (366 days x 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s/day x 6 measured priority parameters), which represents an overall data recovery rate of 99.3%. Priority parameters are all parameters except dew point temperature and precipitation.

The stability wind rose tables included in this report have been generated using the 34 ft.wind data with the 199-30 ft. differential temperature data.The maximum annual calculated cumulative doses resulting from airborne releases were as follows.Unit 1: gamma air dose beta air dose whole body dose skin dose organ (teenager-thyroid)

Unit 2: gamma air dose beta air dose whole body dose skin dose organ (teenager-thyroid)

-3.231 x i0 4-3.583 x1O-3-1.659 x1le-1.483 x10-3-3.191 x 1--3.136 x10-2-6.327 x10.2-1.786 x10'2-5.944 x1 T 2-7.644 x10-3 mrad mrad mrem mrem mrem mrad mrad mrem mrem mrem Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 6o067 (847)963-9o00 3. Data Acquisition Wind speed and direction are measured with MRI model 1022 wind sensors. The wind speed sensors have a starting speed of 0.5 mph (0.22 mps), a range of 0 to 100 mph (0 to 44.7 mps), and a system accuracy of +/-1.25 mph at 100 mph (+/-0.56 mps at 44.7 mps). The wind direction sensors have a threshold speed of 0.75 mph (0.33 mps), a range of 0 to 5400, and a system accuracy of :56.Ambient and differential temperature are measured with MRI model 1596602 sensors.Ambient temperature is measured within the range of -22 to 122 0 F (-30 to 50°C) with an accuracy of +/-0.5 0 F (+/-0.3*C).

Differential temperature is measured within the range of-10 to 10OF (-5.6 to 5.6 0 C) with an accuracy of +/-0.18 0 F (+/-0.10*C).

Dew point temperature is measured with an MRI model 1993900000 dew point sensor and the range of measurement Is -22 to 122 0 F (-30 to 50 0 C) with an accuracy of +/-4 0 F (+/-2.2 0 C).Precipitation is measured with an MRI model 302 tipping bucket rain gauge and is measured in increments of one one-hundredth of an inch with a system accuracy of+/-0.01" (+/-0.25mm).

Instrument types and locations are summarized in Table 1.The meteorological data are collected and stored by a Microtel 4.0 data acquisition system. The Microtel measures the analog voltages of the instruments and records the digital equivalent within the range of 0 to +5 volts. The Microtel has the capability of storing 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of minute data and one week of hourly data. Data are obtained from the Microtel by a direct dial telephone hookup to an in-house computer system. Data are sampled every second.As a backup to the Microtel, data are also recorded with a Johnson Yokogawa Corp. digital recorder (JYC DA100 data acquisition unit and Contec IPC-PT/M300(PC)WOU PC). Data are sampled every 10 seconds.Data loggers are summarized in Table 2.Murray & Trettel, Inc. 600 First Bank Drive, Suite A Palatine, Illinois 60067 (847) 963-9000 Table 1 Instrument Locations Measurement Sensor Tvoe Location Elevation Wind Speed MRI 1022-S Tower 203 ft.Wind Direction MRI 1022-D Tower 203 ft.Differential Temperature MRI 1596602 Tower 199 ft.Wind Speed MRI 1022-S Tower 34 ft.Wind Direction MRI 1022-D Tower 34 ft.Ambient Temperature MRI 1596602 Tower 30 ft.Dew Point Temperature MRI 1993900000 Tower 30 ft.Precipitation (Pre-Dec 2008) MRI 302 Tipping Bucket Ground 3 ft.New Precip Gauge installed in December 2008 Precipitation Climatronics 100097-1 Ground 3 ft.Table 2 Data Loggers Sampling Measurement Loogge Tywe Frequency Winds, Temperatures, Microtel 4.0 data acquisition system I sec.and Precipitation Winds, Temperatures, Johnson Yokogawa Corp. Digital Recorder 10 sec.and Precipitation (JYC DAI00 and Contec IPC-PT/M300(PC)WOU) digital recorder Murray & Trettel, Inc. 6oo First Bank Drive, SuiteA Palatine, Illinois 60067 (847)963-gooo 4. Data Analysis The Braidwood Microtel is routinely interrogated to obtain hourly average data. The data are then stored in the meteorological data base and listings of the data are generated.

The data listings are examined by qualified personnel and any apparent problems are brought to the attention of the Project Manager or Meteorological Technician and the Instrument Maintenance staff.Hourly values of wind speed, wind direction, ambient temperature, differential temperature, dew point temperature, and precipitation are obtained through measurements taken at the site. The standard deviation of wind direction (sigma) is derived. The wind direction variation is described in terms of the standard deviation of the direction about the mean direction.

The Microtel computes an hourly value of wind sigma by taking the Root-Mean-Square (RMS) of the four quarter-hour wind sigma values. The quarter-hour wind sigma values are calculated directly from the one second wind direction samples during the 15 minute period.The data base files are edited approximately once a week. Missing Microtel values are replaced with digital recorder values, when available.

Invalid data are deleted from the data base.When an hourly value is missing or invalid, the numeral 999 is entered into the computer data file in the appropriate location.

When the wind direction changes substantially relative to its short term fluctuations, the numeral 888 can be entered into the wind sigma location to indicate shifting winds. When the wind blows with velocities near the sensing threshold of the instrument, the numeral 777 can be entered into the wind direction, wind speed, and wind sigma locations to indicate light and variable winds.Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847)963-9o00 A professional meteorologist reviews the data, calibration findings, equipment maintenance reports, and other information and determines which data are valid. Only the valid data are retained in the data base.As a quality control measure, a monthly comparison is made of Microtel and digital recorder data. An investigation is made into the reasons for any significant differences between the sets of values.Joint frequency stability wind rose tables of hourly data measured at the site are generated.

These tables indicate the prevailing wind direction, wind speed, and stability classes measured during the period of observation as well as the joint frequencies of occurrence of the wind direction, wind speed, and stability classes. The values are also used as input to the atmospheric transport and diffusion models. Wind direction, wind speed, and stability classes are given in Tables 3, 4, and 5.Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847) 963-9000 Table 3 Wind Direction Classes IF IF IF IF IF IF IF IF IF IF IF IF IF IF IF IF 348.750 < WD <11.250 < WD <33.750 < WD <56.250 < WD <78.750 < WD <101.250 < WD <123.750 < WD <146.250 < WD <168.750 < WD <191.250 < WD <213.750 < WD <236.250 < WD <258.750 < WD <281.250 < WD <303.750 < WD <326.250 < WD <11.250 THEN Class is 33.750 THEN Class is 56.250 THEN Class is 78.750 THEN Class is 101.250 THEN Class is 123.750 THEN Class is 146.250 THEN Class is 168.750 THEN Class is 191.250 THEN Class is 213.750 THEN Class is 236.250 THEN Class is 258.750 THEN Class is 281.250 THEN Class is 303.750 THEN Class is 326.250 THEN Class is 348.750 THEN Class is N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW Table 4 Wind Speed Classes IF 0.0 mph < WS < 0.7 mph THEN Class is IF 0.7 mph < WS < 3.5 mph THEN Class is IF 3.5 mph < WS < 7.5 mph THEN Class is IF 7.5 mph < WS < 12.5 mph THEN Class is IF 12.5 mph < WS < 18.5 mph THEN Class is IF 18.5 mph < WS < 24.5 mph THEN Class is IF 24.5 mph < WS THEN Class is 1 2 3 4 5 6 7 Murray & Trettel, Inc. 6oo First Bank Driue, Suite A Palatine, Illinois 6o067 (847)963-9000 Table 5 Atmospheric Stability Classes Differential Temperature Interval Class (in °CI100mI (1)Differential Temperature Interval (in OF over the 199-30 ft- interval) (M)Extremely Unstable Moderately Unstable Slightly Unstable Neutral Slightly Stable Moderately Stable Extremely Stable-1.9-1.7-1.5-0.5 1.5 4.0 AT" AT" AT" AT" AT" AT" AT-1.9-1.7-1.5-0.5 1.5 4.0-1.8-1.6-1.4-0.5 1.3 3.7 AT" AT" AT< AT" AT" AT" AT-1.8-1.8-1.4-0.5 1.3 3.7 (1) from ANSIIANS 2.5 ( ANSI/ANS 2.6 intervals scaled for instrument heights on the Braidwood meteorological tower Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847)963-9000 A description of the procedures and computational techniques used to calculate the doses resulting from radioactive releases is found in the Murray and Trettel, Inc. "Offsite Dose Calculation Manual" (ODCM-Rev.

9), dated January 1996. The ODCM describes the atmospheric transport and diffusion models used to calculate the doses and concentrations resulting from airborne releases.Murray & Trettel, Inc. 6oo First Bank Driue, Suite A Palatine, Illinois 60o67 (847) 963-goa0 5. Results 5.1 Instrument Maintenance The maintenance program followed during 2008 was composed of routinely scheduled visits and non-routine equipment repairs. Routine site visits were made to inspect the sensing and recording systems for proper operation.

In addition, routine maintenance and calibration checks of all tower-mounted and ground level equipment were performed every four months. A description of the calibration and field procedures is found in the Murray and Trettel, Inc. "P1009 Procedures Manual" (June 2008).In January, the Microtel and digital recorder were rebooted due to communication problems and slightly erratic data.In February, the digital recorder was rebooted due to communication problems.In March, the 34 ft. wind speed sensor was replaced due to damage.In April, the digital recorder was rebooted due to communication problems.In May, a platform for a new rain gauge was constructed.

Also in May, the modem for the digital recorder was replaced due to communication problems.In June, broken wind speed cups were replaced at the 203 ft level.In August, blown fuses for the control room signals were replaced.

Also in August, a new digital recorder was installed.

In addition, the read switch and signal conditioning for the precipitation gauge were replaced.In September, blown fuses to the control room were replaced.

Later in the month, the 203 ft. wind direction was replaced due to spiking.In October, the aspirator motor for the dew point sensor was replaced.In December, a new precipitation gauge went into service. Icing also occurred on the wind speed sensors causing some data loss.No other significant problems were encountered with the equipment, and at the end of the year, no problems were evident at the site.Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847)963-9000 5.2 Data Recovery The record of data recovery for the year is summarized in Table 6.Table 6 Braidwood Site Data Recover, Summary 2008 Recovered Recovered Lost Percent Measurement Elevation Hours Percent Hours Changed Wind Speed 34 ft. 8696 99.0 88 2.2 Wind Speed 203 ft. 8652 98.5 132 1.3 Wind Direction 34 ft. 8729 99.4 55 2.3 Wind Direction 203 ft. 8743 99.5 41 0.5 Ambient Temperature 30 ft. 8757 99.7 27 0.1 Differential Temperature 199-30 ft. 8756 99.7 28 0.2 Dew Point Temperature 30 ft. 8757 99.7 27 18.0 Precipitation 3 ft. 8652 98.5 132 1.6 AVERAGE* 99.3* average of priority parameters (all except dew point temperature and precipitation)

Murray & Trettel, Inc. 6oo FirstBank Drive, Suite A Palatine, Illinois 60067 (847)963-9000 5.3 Summary of Billings for Equipment Repairs, Replacement Parts. and Other Work not Included in Fixed-Cost Maintenance Agreement

-2008 Description

-Braidwood Cost Janar Meteorological equipment maintenance 1,049.80 Meteorological parts, materials, and contractor services 502.94 Microtel equipment maintenance 75.00 February Meteorological equipment maintenance 299.00 Meteorological parts, materials, and contractor services 1,109.80 March Meteorological equipment maintenance 225.00 Meteorological parts, materials, and contractor services 144.28 Exelon Badge 167.57 Avni Meteorological equipment maintenance 249.00 Meteorological parts, materials, and contractor services 467.82 2007 X/Q and DIQ Calculations 500.00 May Meteorological equipment maintenance 1,530.99 Meteorological parts, materials, and contractor services 412.10 June Meteorological equipment maintenance 507.25 Meteorological parts, materials, and contractor services 466.62 Special Invoice -Texas Equipment 7,500.00 JuN Meteorological equipment maintenance 175.00 Meteorological parts, materials, and contractor services 506.14 Aug-st Meteorological equipment maintenance 1,329.00 Meteorological parts, materials, and contractor services 166.30 Setember Meteorological equipment maintenance 1,609.99 Meteorological parts, materials, and contractor services 189.15 October Meteorological equipment maintenance 731.85 Meteorological parts, materials, and contractor services 82.85 November Meteorological equipment maintenance 287.50 Meteorological parts, materials, and contractor services 5.04 December Meteorological equipment maintenance 1,331.85 Annual Total: $ 21,621.84 Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847)963-90oo 5.4 Stability Wind Rose Data The quarterly and annual stability wind roses are given in Tables 7 through 11. Wind speed classes have been altered to reflect the wind sensor threshold, For the year, winds measured at 34 ft. most frequently came from the West (10.08%) and fell into the 3.6-7.5 mph wind speed class (39.13%).

Calms (wind speeds at or below the sensor threshold) were measured 0.00% of the time and speeds greater than 24.5 mph were measured 0.06% of the time.Stability based on the 199-30 ft. differential temperature most frequently fell into the neutral classification (40.77%).Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847)963-9000 TABLE 7-14-Braidwood Generating Station 34 ft. Wind Speed and Direction 2008 199Ft-30Ft Delta-T (F)Nimber of Observations

-2126 Values are Percent Occurrence SPEED ..................................

WIND DIRECTION CLASSES ..................................

.........

STABILITY CLASSES ..........

CLASS N NNE NE ERE E ESE SE SSE S SSW1 SW WSW W W4NW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU Mu C SU A N L 5S MMS ES EU I SU-N 3 SS"S ES EU mU 4 SU 7 SS MS ES EU mU 8 SU 1 SS 2 S ES EU I lu 3 SU.N 1 SS 8mS ES 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.24 0.05 0.05 0.00 0.00 0.05 0.71 0.56 0.05 0.00 0.00 0.00 0.09 1.88 0.00 0.00 0.00 0.00 0.00 0.05 0.19 o.o0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.24 0.14 0.05 0.00 0.00 0.00 0.00 1.13 0.61 0.09 0.00 0.38 0.14 0.24 1.41 0.33 0.00 0.00 0.00 0.09 0.05 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.42 0.28 0.09 0.00 0.05 0.09 0.09 1.13 0.28 0.00 0.00 0.14 0.00 0.05 1.83 0.09 0.00 0.00 0.00 0.05 0.00 0.24 0.24 0,00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.47 0.33 0.19 0.00 0.05 0.00 0.05 2.21 0.33 0.00 0.00 0.00 0.00 0.00 0.85 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.38 0.09 0.00 0.05 0.00 0.00 1.98 0.85 0.00 0.00 0.14 0.00 0.14 0.33 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.24 0.05 0.00 0.00 0.05 0.14 0.85 0.80 0.09 0.00 0.14 0.05 0.09 1.13 0.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.00 0.00 0.00 0.00 0.00 0.56 0.52 0.19 0.00 0.09 0.05 0.14 0.99 0.80 0.00 0.00 0.00 0.00 0.00 0.09 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.00 0.00 0.00 0.00 0.05 0.71 0.66 0.00 0.00 0.00 0.05 0.24 2.54 1.18 0.00 0.00 0.00 0.05 0.00 0.52 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.28 0.38 0.09 0.00 0.00 0.00 0.00 2.26 1.65 0.00 0.00 0.00 0.00 0.19 3.20 0.99 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.14 0.00 0.00 0.05 0.09 0.52 0.47 0.14 0.09 0.00 0.00 0.19 1.32 0.66 0.05 0.00 0.09 0.05 0.09 1.36 0.47 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.24 0.14 0.14 0.05 0.00 0.09 0.85 0.28 0.05 0.00 0.14 0.00 0.14 1.55 0.33 0.00 0.00 0.09 0.00 0.00 0.47 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.19 0.09 0.00 0.00 0.05 0.19 1.51 0.99 0.71 0.00 0.09 0.09 0.24 0.99 0.61 0.00 0.00 0.00 0.05 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.24 0.52 0.89 0.05 0.09 0.14 0.33 1.69 0.61 0.33 0.00 0.19 0.28 0.28 2.63 0.33 0.00 0.00 0.19 0.00 0.09 1.51 0.24 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.94 0.66 0.09 0.28 0.19 0.24 1.41 1.08 0.24 0.00 0.71 0.14 0.33 4.42 0.56 0.00 0.00 0.24 0.09 0.09 1.46 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.75 0.09 0.00 0.24 0.24 0.05 1.36 1.36 0.09 0.00 0.42 0.05 0.09 1.32 0.14 0.00 0.00 0.00 0.00 0.00 0.24 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.38 0.09 0.00 0.09 0.00 0.00 0.99 0.61 0.00 0.00 0.28 0.24 0.14 1.32 0.38 0.00 0.00 0.00 0.00 0.09 0.38 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.88 4.99 2.63 0.33 0.89 0.89 0.80 1.36 17.87 10.40 2"07 0.09 2.73 2.73 1.08 2.40 26.76 7.57 0.05 0.00 0.61 0.61 0.38 0.66 9.83 2.16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.88 4.99 2.63 0.33 9.83 0.80 1.36 17.87 10.40 2.07 0.09 33.49 1.08 2.40 26.76 7.57 0.05 0.00 40.59 0.38 0.66 9.83 2.16 0.00 0.00 13.64 Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 6o067 (847)963-9000 TABLE 7 continued-15-Braldwood Generating Station 34 ft. Wind Speed and Direction January-March.

2008]99Ft-3OFt Delta.T (F)SPEED ..................................

WIND DIRECTION CLASSES ..................................

.........

STABILITY CLASSES ..........

CLASS N NNE NE ENE E ESE SE SSE S 5SW SW WSW W WNW NW NNW TOTAL EU MU SU N SS 1M ES TOTAL EU 1MU 9 SU-N 2 SS 4 MS ES EU G MU T SU N 2 SS 4 MS ES 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.33 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.26 0.19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.24 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.28 0.00 0.05 0.52 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.24 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.33 0.33 0.00 0.19 1.60 0.33 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.19 1.60 0.33 0.00 0.00 2.45 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TOT 3.90 5.03 5.08 4.70 4.19 3.95 3.62 6.26 9.45 6.35 4.89 5.97 11.48 13.59 6.54 4.99 100.00 4.56 2.26 4.61 57.95 25.45 4.75 0.42 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NN TOTAL 0.00 0.00 0.19 2.78 0.80 0.09 0.05 0.38 0.24 0.28 2.92 1.08 0.14 0.00 0.19 0.14 0.14 3.62 0.89 0.09 0.00 0.05 0.00 0.05 3.53 0.89 0.19 0.00 0.19 0.00 0.14 2.46 1.32 0.09 0.00 0.14 0.09 0.24 2.02 1.32 0.14 0.00 0.09 0.05 0.14 1.65 1.51 0.19 0.00 0.00 0.09 0.28 3.76 2.12 0.00 0.00 0.00 0.00 0.19 6.07 3.10 0.09 0.00 0.09 0.09 0.42 3.48 1.83 0.33 0.09 0.2B 0.00 0.28 3.15 0.85 0.19 0.14 0.14 0.19 0.47 2.59 1.79 0.80 0.00 0.75 0.42 0.75 6.59 1.69 1.22 0.05 1.22 0.42 0.66 7.67 2.63 0.89 0.09 0.66 0.28 0.14 3.01 2.26 0.19 0.00 0.38 0.24 0.24 2.68 1.36 0.09 0.00 4.56 2.26 4.61 57.95 25.45 4.75 0.42-STABILITY CLASSES-Extrmuly Unstable Moderately Unstable Slightly Unstable Neutral Slightly Stable Moderately Stable Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NlW TOTAL 0.00 0.33 1.36 1.98 0.24 0.00 0.00 0.00 0.42 1.83 2.49 0.28 0.00 0.00 0.00 0.80 1.65 2.12 0.52 0.00 0.00 0.00 0.99 2.63 0.99 0,09 0.00 0.00 0.00 0.61 2.87 0.71 0.00 0.00 0.00 0.00 0.33 1.93 1.69 0.00 0.00 0.00 0.00 0.14 1.27 2.07 0.14 0.00 0.00 0.00 0.14 1.41 4.00 0.61 0.09 0.00 0.00 0.05 0.75 3.90 4.37 0.38 0.00 0.00 0.19 1.36 2.21 2.07 0.52 0.00 0.00 0.56 1.32 2.15 0.56 0.28 0.00 0.00 0.33 3.43 2.02 0.09 0.09 0.00 0.00 1.69 3.20 3.72 2.02 0.85 0.00 0.00 1.83 3.43 6.16 1.93 0.24 0.00 0.00 0.94 3.34 2.02" 0.24 0.00 0.00 0.00 0.47 1.69 2.35 0.47 0.00 0.00 0.00 9.83 33.49 40.59 13.64 2.45 0.00-WINO SPEED CLASSES-CALM c 3.5 mph 3.6 -7.5 mph 7.6 -12.5 mph 12.6 -18.5 mph 18.6 -24.5 mph> 24.5 mph Murray & Trettel, Inc. 6oo First Bank Driue, Suite A Palatine, Illinois 6o067 (847)963-9000 TABLE 8-16-Braidwood Generating Station 34 ft. Wind Speed and Direction April-June, 2008 199Ft-30Ft Delta-T (F)Number of Observations

-2149 Values are Percent Occurrence SPEED ----------------------------------

W[ND DIRECTION CLASSES.........

STABILITY CLASSES ..........

EU MU SU N SS MS ES TOTAL CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU C SU A N L SS MMS ES EU MU I SU-N 3 SS MS ES EU MU 4 SU-N 7 SS MS ES EU MU 8 SU.N 1SS 2MS ES EU I MU 3 SU.N 1 SS 8MS ES 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.19 0.29 0.09 0.14 0.05 0.23 0.14 0.33 0.65 0.05 0.00 0.05 0.09 0.09 0.70 0.14 0.00 0.00 0.00 0. D0 0.00 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.14 0.19 0.05 0.00 0.19 0.19 0.93 1.12 0.00 0.00 0.00 0.05 0.19 1.63 0.14 0.00 0.00 0.00 0.00 0.00 0.19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.47 0.28 0.05 0.23 0.05 0.09 1.35 0.42 0.05 0.00 0.14 0.14 0.19 1.68 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.14 0.00 0.23 0.89 0.28 0.19 0.19 0.14 0.23 0.98 0.60 0.05 0.00 0.19 0.00 0.00 1.07 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.09 1.21 0.47 0.33 0.09 0.14 0.00 0.51 0.56 0.00 0.00 0.09 0.00 0. 00 0.23 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.23 0.56 0.51 0.09 0.14 0.23 0.09 0.14 1.54 0.33 0.00 0.09 0.05 0.00 0.09 0.47 0.00 0.00 0.00 0.00 0.00 0.23 0.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.23 0.37 0.37 0.14 0.14 0.09 0.33 0.47 1.95 0.14 0.00 0.37 0.14 0.14 0.37 1.07 0.00 0.00 0.05 0.00 0.14 0.09 0.19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.19 0.19 0.00 0.05 0.14 0.23 0.60 1.16 0.05 0.00 0.23 0.28 0.09 1.16 1.21 0.00 0.00 0.14 0.09 0.00 0.19 0.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.14 0.00 0.19 0.00 0.09 0.05 0.56 0.70 0.09 0.00 0.05 0.14 0.47 1.63 2.75 0.00 0.00 0.14 0.28 0.14 1.26 1.07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.09 0.14 0.05 0.09 0.09 0.00 0.09 0.42 0.42 0.23 0.05 0.09 0.14 0.23 1.16 1.40 0.19 0.00 0.37 0.14 0.28 0.79 0.74 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.19 0.05 0. 00 0.09 0.09 0.70 0.98 0.33 0.00 0.09 0.19 0.23 1.49 0.88 0.05 0.00 0.05 0.09 0.09 0.84 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.23 0.19 0.37 0.33 0.09 0.14 0.23 0.47 1.81 0.74 0.19 0.37 0.42 0.33 1.40 0.33 0.05 0.00 0.42 0.00 0.09 0.42 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.28 1.12 0.56 0.28 0.14 0.14 0.65 0.93 0.37 0.05 0.60 0.28 0.19 0.93 0.09 0.00 0.00 0.33 0.19 0.00 0.98 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.23 0.42 0.74 0.33 0.19 0.23 0.19 0.60 0.65 0.00 0.00 0.56 0.19 0.23 0.84 0.05 0.00 0.00 0.00 0.00 0.00 0.33 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.23 0.37 0.14 0.28 0.28 0.23 0.93 0.56 0.05 0.00 0.8B 0.14 0.09 0.84 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.28 0.14 0.19 0.33 0.26 0.23 0.79 0.47 0.05 0.00 0.93 0.23 0.14 0.74 0.19 0,00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00.0.05 0.05 0.14 0.33 1.95 5.82 5.35 2.84 2.14 2.14 2.47 2.56 10.33 14.52 2.51 0.28 4.75 4.75 2.47 2.61 15.96 9.03 0.29 0.00 1.54 1.54 0.79 0.74 5.58 2.61 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.33 1.95 5.82 5.35 2.84 16.47 2.47 2.56 10.33 14.52 2.51.0.28 34.91 2.47 2.61 15.96 9.03 0.28 0.00 35.09 0.00 0.05 0.00 0.00 0.00 0.00 0,05 0.09 0.00 0.00 0.00. 0.00 0.00 0.00 0.79 0.74 5.58 2.61 0.00 0.00 11.26 Murray & Trettel, Inc. 60o First Bank Drive, Suite A Palatine, Illinois 60067 (847) 963-9000 TABLE 8 continued-17-8raidwood Generating Station 34 ft. Wind Speed and Direction April-June.

2008 199Ft-30Ft Delta-T (F)SPEED ----------------------------------

WIND DIRECTION CLASSES ..................................

.........

STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NI NNW TOTAL EU MU SU N $5 MS ES TOTAL EU 1 MU 9 SU-N 2 SS 4 MS ES EU GMU T SU N 2 SS 4,15 ES 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.80 0.00 0.19 0.09 0.05 0.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.23 0.00 0.65 0.19 0.00 0.00 0.00 0.00 0.05 0.19 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.28 0.28 0.37 0.05 1.26 0.19 0.00 0.00 0.00 0.00 0.00 0.05 0.19 0.00 0.00 0.00 0.37 0.05 1.26 0.19 0.00 0.00 2.14 0.00 0.05 0.19 0.00 0.00 0.00 0.23 TOT 3.40 5.21 5.30 5.17 3.82 5.07 6.84 6.33 10.42 8.61 6.65 8.61 8.33 5.77 5.30 5.17 100.00 8.75 6.24 6.33 35.27 32.15 8.14 3.12 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL 0.09 0.33 0.23 1.40 1.07 0.14 0.14 0.00 0.23 0.37 2.98 1.40 0.19 0.05 0.37 0.19 0.28 3.07 1.02 0.33 0.05 0.42 0.28 0.23 2.19 1.54 0.33 0.19 0.19 0.14 0.05 0.84 1.81 0.47 0.33 0.23 0.28 0.14 0.70 2.79 0.84 0.09 0.56 0.23 0.65 1.16 3.58 0.51 0.14 0.42 0.51 0.37 2.00 2.79 0.23 0.00 0.37 0.60 0.79 3.72 4.65 0.09 0.19 0.60 0.51 0.70 3.30 2.89 0.47 0.14 0.14 0.42 0.42 3.07 2.00 0.56 0.05 0.88 0.56 0.65 2.51 2.33 1.16 0.51 1.26 0.60 0.33 2.70 1.35 1.49 0.60 0.74 0.42 0.42 2.00 1.12 0.74 0.33 1.16 0.42 0.33 1.95 0.88 0.42 0.14 1.30 0.51 0.37 1.68 0.93 0.19 0.19 8.75 6.24 6.33 35.27 32.15 8.14 3.12-STABILITY CLASSES-Extremely Unstable moderately Unstable Slightly Unstable Neutral Slightly Stable Moderately Stable Extremly Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SWWSW W WNW NW NNW TOTAL 0.00 0.70 1.44 1.07 0.14 0.05 0.00 0.00 0.47 2.42 2.00 0.19 0.14 0.00 0.00 0.84 2.19 2.26 0.00 0.00 0.00 0.00 1.77 2.09 1.30 0.00 0.00 0.00 0.00 2.14 1.30 0.37 0.00 0.00 0.00 0.00 1.44 2.47 0.70 0.47 0.00 0.00 0.00 1.16 3.12 2.09 0.47 0.00 0.00 0.00 0.47 2.23 2.98 0.65 0.00 0.00 0.00 0.42 1.49 5.03 2.89 0.60 0.00 0.00 0.42 1.30 3.21 2.33 1.12 0.23 0.00 0.28 2.19 2.93).16 0.09 0.00 0.00 1.12 3.68 2.89 0.93 0.00 0.00 0.00 2.00 2.56 2.09 1.54 0.14 0.00 0.00 1.72 1.86 1.86 0.33 0.00 0.00 0.00 0.88 2.33 2.05 0.05 0.00 0.00 0.00 0.65 2.14 2.23 0.14 0.00 0.00 0.00 16.47 34.81 35.09 11.26 2.14 0.23-WIND SPEED CLASSES-CALH< 3.5 mph 3.6 -7.5 mph 7.6 -12.5 mph 12.6 -18.5 mph 18.6 -24.5 rph> 24.5 mph Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847)963-9ooo TABLE 9-15-Braidwood Generating Station 34 ft. Wind Speed and Direction Juily-Septenbe~r.

2008 199Ft-3OFt Oelta-T (F)Nuffier of Observations

-2132 Values are Percent Occurrence SPEED ----------------------------------

W IND DIRECTION CLASSES ----------------------------------

---

..

STABIL TY CLASSES ..........

CLASS N NNE NE ENE E ESE SE SSE S W SW WSW W WNW NW NNW TOTAL EU H01 SU N SS MS ES TOTAL EU KU C SU A N L SS MMS ES EU I SU-If 3SS ES EU MU 4 SU-N 7 SS 15 ES EU MU 8 SU.N I SS 2 m6 ES EU IMU 35U-N ISS 8mS ES 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.14 0.14 0.75 0.09 0.70 0.38 0.14 0.70 0.14 0.09 0.05 0.09 0.00 0.00 0.42 0.05 0.00 0.00 0.00 0.00 0.00 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.09 0.42 0.70 0.28 0.61 0.33 0.19 0.94 1.03 0.23 0.00 0.28 0.00 0.14 0.89 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.42 0.84 0.66 0.33 0.94 0.52 0.19 1.27 0.70 0.00 0,00 0.75 0.00 0.05 0.14 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.19 0.05 0.23 2.41 1.22 0.38 1.08 0.14 0.19 0.42 0.61 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.14 0.14 0.28 1.31 1.97 1.08 0.61 0.14 0.14 0.28 0.19 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.33 0.61 1.36 0.52 0.33 0.33 0.14 0.09 0.80 0.47 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.47 0.42 0.47 0.05 0.75 0.23 0.28 0.80 1.17 0.28 0.05 0.09 0.05 0.05 0.00 0.19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.23 0.75 0.14 0.89 0.23 0.56 1.22 1.41 0.28 0.00 0.19 0.05 0.00 0.23 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.14 0.23 0.05 0.56 0.28 0.19 0.75 1.27 0.23 0.00 0.61 0.23 0.05 0.47 0.38 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.09 0.23 0.00 0.23 0.23 0.09 0.33 0.94 0.61 0.00 0.38 0.19 0.00 0.98 0.42 0.00 0.00 0.14 0.05 0.09 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.23 0.05 0.23 0.19 0.23 1.27 1.78 0.23 0.00 1.03 0.19 0.14 1.45 0.14 0.09 0.00 0.23 0.00 0.00 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.38 0.42 0.42 1.03 0.09 0.28 1.41 2.63 1.13 0.05 0.84 0.28 0.09 0.38 0.05 0.00 0.00 0.05 0.00 0.05 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.61 0.94 0.98 1.69 0.56 0.28 1.17 0.61 0.14 0.00 0.98 0.33 0.05 0.09 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.61 0.98 0.94 0.94 0.66 0.19 0.05 0.75 0.19 0.09 0.00 0.19 0.00 0.05 0.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.28 0.61 0.75 0.33 0.70 0.09 0.09 1.22 0.47 0.09 0.00 0.28 0.00 0.05 0.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.05 0.14 0.33 0.52 0.33 0.56 0.33 0.14 1.03 0.66 0.14 0.00 0.56 0.09 0.09 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.14 0.14 0.75 0.52 3.52 8.58 12.15 5.96 11.59 11.59 4.27 3.19 13.65 14.59 4.17 0.14 6.29 6.29 1.41 0.75 5.72 1.50 0.14 0.00 0.42 0.42 0.05 0.14 0.33 0.05 0.00 0.00 0.75 0.52 3.52 8.58 12.15 5.96 31.61 4.27 3.19 13.65 14.59 4.17 0.14 51.59 1.41 0.75 5.72 1.50 0.14 0.00 15.81 0.05 0.14 0.33 0.05 0.00 0.00 0.98 Murray & Trettel, Inc. 600 First Bank Drive, Suite A Palatine, Illinois 60067 (847) 963-9000 TABLE 9 continued 8raldwood Generating St-ation 34 ft. Wind Speed and Direction SPEED ----------------------------------

WIND DIRECTION CLASSES-19-July-September.

2008 199Ft-30Ft Oelta-T (F)------------..........

STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE. SSE S SSW SW WSW W WNIM W NNW TOTAL EU MU SU N SS MS ES TOTAL EU I1MU 9 SU-N 2SS 4MS ES EU G M T SU N 2 SS 4MS ES 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TOT 4.08 6.29 6.94 6.05 6.47 5.02 5.44 6.47 5.53 5.16 7.69 9.71 8.63 5.96 5.30 5.25 100.00 18.43 6.47 4.60 23.22 24.72 16.46 6.10 100.00 Wind Direction by Stability N NNE WE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL 0.80 0.38 0.19 1.41 0.33 0.84 0.14 0.89 0.33 0.42 1.92 1.50 0.94 0.26 1.69 0.61 0.23 1.83 1.59 0.66 0.33 1.17 0.33 0.23 0.66 2.02 1.27 0.38 0.66 0.28 0.28 0.56 1.50 2.11 1.08 0.33 0.33 0.19 0.42 1.41 1.83-0.52 0.84 0.33 0.38 1.27 1.78 0.75 0.09 1.08 0.28 0.56 1.59 1.78 1.03 0.14 1.17 0.56 0.23 1.27 1.78 0.47 0.05 0.75 0.52 0.19 1.41 1.45 0.84 0.00 1.50 0.38 0.38 2.86 1.97 0.56 0.05 1.92 0.38 0.42 1.92 3.05 1.55 0.47 2.67 0.89 0.33 1.41 1.27 1.08 0.98 0.84 0.23 0.09 1.64 1.17 1.03 0.94 0.98 0.14 0.19 1.74 1.08 0.84 0.33 1.13 0.52 0.28 1.31 1.03 0.66 0.33 18.43 6.47 4.60 23.22 24.72 16.46 6.10-STABILITY CLASSES-Extremely Unstable Moderately Unstable Slightly Unstable Neutral Slightly Stable Moderately Stable Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW I NNW TOTAL 0.00 1.17 2.20 0.56 0.14 0.00 0.00 0.00 1.59 3.33 1.36 0.00 0.00 0.00 0.00 2.35 3.61 0.98 0.00 0.00 0.00 0.00 3.56 2.44 0.05 0.00 0.00 0.00 0.00 4.97 1.50 0.00 0.00 0.00 0.00 0.00 2.86 2.16 0.00 0.00 0.00 0.00 0.00 1.50 3.56 0.38 0.00 0.00 0.00 0.00 1.27 4.60 0.61 0.00 0.00 0.00 0.00 0.52 3.28 1.74 0.00 0.00 0.00 0.00 0.42 2.44 1.97 0.33 0.00 0.00 0.00 0.38 3.94 3.05 0.33 0.00 0.00 0.00 1.31 6.61 1.64 0.14 0.00 0.00 0.00 2.67 4.46 1.50 0.00 0.00 0.00 0.00 3.52 1.92 0.52 0.00 0.00 0.00 0.00 2.06 2.67 0.56 0.00 0.00 0.00 0.00 1.45 2.86 0.89 0.05 0.00 0.00 0.00 31.61 51.59 15.81 0.98 0.00 0.00-WIND SPEED CLASSES-CALM< 3.5 mph 3.6 -7.5 mph 7.6 -12.5 mph 12.6 -18.5 mph 18.6 -24.5 mph> 24.5 mph Murray & Trettel, Inc. 600 First Bank Drive, Suite A Palatine, Illinois 60067 (847) 963-9ooo TABLE 10-20-Braidwood Generating Station 34 ft. Wind Speed and Direction October-Deceniber.

2008 199Ft-3OFt Delta-T MF Number of Observations

-2118 Values are Percent Occurrence SPEED ..................................

WINO DIRECTION CLASSES ..................................

---

STABILITY CLASSES ..........

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU IU SU N SS MS ES TOTAL EU KU C SU A N L SS MMS ES EU KU lSU-N 3 SS MS ES EU MU 4 SU.N 7 SS MS ES EU MU 8 SU-N 1 SS 2MS ES EU IMU 3 SU-N 1 SS a S ES 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.14 0.28 0.05 0.00 0.05 0.24 0.71 0.76 0.24 0.00 0.14 0.00 0.09 0.66 0.05 0.00 0.00 0.00 0.00 0.00 0.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.24 0.38 0.05 0.00 0.05 0.19 0.24 0.09 0.00 0.00 0.00 0.00 0.00 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 O. O0 O. O0 0.00 0.00 0.09 0.19 0.19 0.09 0.19 0.14 0.28 0.85 0.38 0.00 0.00 0.00 0.00 0.00 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.28 0.52 0.38 0.09 0.05 0.09 0.24 0.47 0.24 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 1.37 0.66 0.47 0.24 0.00 0.09 0.42 0.94 0.14 0.00 0.05 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.57 0.61 0.24 0.00 0.33 0.05 1.32 1.37 0.24 0.00 0.09 0.19 0.05 0.42 0.33 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.06 0.19 0.05 0.00 0.14 1.37 1.32 0.14 0.00 0.05 0.05 0.09 1.56 0.47 0.00 0.09 0.00 0.00 0.05 0.00 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.05 0.00 0.00 0.05 0.29 0.99 1.61 0.00 0.00 0.00 0.14 0.14 0.90 0.94 0.00 0.00 0.00 0.00 0.00 0.85 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.00 0.00 0.05 0.57 1.84 0.00 0.00 0.14 0.14 0.42 2.50 3.02 0.00 0.00 0.05 0.19 0.09 2.41 1.13 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.00 0.00 0.00 0.09 0.19 0.28 0.24 0.00 0.09 0.14 0.09 1.46 1.51 0.09 0.00 0.09 0.19 0.09 1.27 0.09 0.00 0.00 0.00 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.09 0.19 0.00 0.00 0.00 0.57 0.47 0.24 0.05 0.00 0.05 0.14 1.79 0.52 0,00 0.00 0.05 0.05 0.05 0.57 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.24 0.42 0.14 0.05 0.09 0.14 1.18 0.56 1.37 0.52 0.05 0.33 0.33 1.27 0.05 0.00 0.00 0.00 0.14 0.09 0.42 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.33 0.80 0.05 0.14 0.24 0.28 1.61 1.27 0.42 0.05 0.14 0.14 0.38 3.35 0.19 0.05 0.00 0.14 0.28 0.24 1.37 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.28 0.28 0.24 0.00 0.24 0.19 0.14 0.90 0.80 0.00 0.00 0.57 0.24 0.05 2.17 0.19 0.00 0.00 0.00 0.05 0.00 0.57 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.19 0.71 0.42 0.05 0.33 0.19 0.05 1.09 1.19 0.00 0.00 0.66 0.19 0.14 1.65 0.52 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.09 0.19 0.28 0.29 0.09 0.28 0.09 1.18 0.66 0.05 0.00 0.14 0.09 0.14 3.31 0.66 0.00 0.00 0.00 0.00 0.00 1.13 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 1.37 5.05 5.00 1.89 1.37 1.37 1.70 2.36 13.64 13.88 3.07 0.61 2.12 2.12 1.70 2.08 21.39 8.45 0.14 0.00 0.33 0.33 0.90 0.61 9.07 1.65 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 1.37 5.05 5.00 1.89 13.41 1.70 2.36 13.64 13.88 3.07 0.61 36.64 1.70 2.08 21.39 8.45 0.14 0.00 35.88 0.90 0.61 9.07 1.65 0.00 0.00 12.56 Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847)963-9000 TABLE 10 continued-21-Braidwood Generating Station 34 ft. Wind Speed and Direction October-Decemner.

2008 199Ft-30Ft Delta-T (F)SPEED ----------------------------------

W IND DIRECTION CLASSES ..................................

.........

STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW SW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 1MU 9 SU-N 2 5S 4 MS ES 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0o.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0;00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.52 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.00 0.05 1.32 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 1.32 0.09 0.00 0.00 1.51 EU GMU T SU N 2SS 4MS ES 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TOT 3.78 1.61 2.55 2.36 4.53 5.90 5.67 6.19 13.27 6.19 5.00 7.88 11.90 6.99 7.41 8.78 100.00 3.87 4.30 5.19 46.79 29.13 8.22 2.50 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W W NW NNW TOTAL 0.14 0.05 0.33 1.75 0.94 0.52 0.05 0.00 0.05 0.19 0.61 0.33 0.38 0.05 0.19 0.14 0.28 1.09 0.57 0.19 0.09 0.05 0.09 0.24 0.76 0.76 0.38 0.09 0.28 0.00 0.14 0.52 2.31 0.80 0.47 0.09 0.52 0.09 1.84 2.27 0.85 0.24 0.09 0.05 0.28 2.93 1.94 0.19 0.19 0.00 0.19 0.42 2.74 2.79 0.05 0.00 0.19 0.33 0.61 6.00 6.04 0.09 0.00 0.19 0.33 0.28 3.12 1.89 0.38 0.00 0.05 0.09 0.19 2.93 1.18 0.33 0.24 0.09 0.57 0.57 3.21 0.99 1.79 0.66 0.47 0.66 0.90 6.66 1.84 1.27 0.09 0.60 0.47 0.19 3.92 1.37 0.24 0.00 0.99 0.38 0.19 2.97 2.41 0.42 0.05 0.24 0.38 0.28 5.76 1.51 0.33 0.28 3.87 4.30 5.19 46.79 29.13 8.22 2.50-STABILITY CLASSES-Extremely Unstable Moderately Unstable Slightly Unstable Neutral Slightly Stable Moderately Stable Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SWWSW W WN NW K TOTAL 0.00 0.57 1.98 0.94 0.28 0.00 0.00 0.00 0.76 0.57 0.14 0.14 0.00 0.00 0.00 0.57 1.84 0.14 0.00 0.00 0.00 0.00 1.27 1.09 0.00 0.00 0.00 0.00 0.00 2.60 1.84 0.09 0.00 0.00 0.00 0.00 1.51 3.31 1.09 0.00 0.00 0.00 0.00 0.38 3.02 2.22 0.05 0.00 0.00 0.00 0.14 2.93 2.12 0.99 0.00 0.00 0.00 0.09 2.46 6.23 3.87 0.61 0.00 0.00 0.05 0.80 3.40 1.75 0.19 0.00 0.00 0.33 1.32 2.50 0.85 0.00 0.00 0.00 0.86 4.01 2.03 0.71 0.28 0.00 0.00 1.23 4.01 4.25 2.08 0.33 0.00 0.00 0.80 2.27 3.21 0.66 0.05 0.00 0.00 1.37 2.83 3.16 0.05 0.00 0.00 0.00 0.90 2.36 4.34 1.13 0.05 0.00 0.00 13.41 36.64 35.88 12.56 1.51 0.00-WINO SPEED CLASSES-CALM<c 3.5 mph 3.6 -7,5 aph 7.6 -12.5 mph 12.6 -18.5 mph 18.6 -24.5 mph> 24.5 Mph Murray & 7)ettel, Inc. 6oo First Bank Drive, Suite A Palatine, Ilhinois 60067 (847)963-9000 TABLE 11-22-Braidwood Generating Station 34 ft. Wind Speed and Direction January-December.

2008 199Ft-3OFt Deta-T (F)Number of Observations

-8525 Values are Percent Occurrence SPEED ..................................

WIND DIRECTION CLASSES ----------------------------------

.........

STABLITY CLASSES ..........

EU MU1, SU N SS MS ES TOTAL CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WKW NW NNW TOTAL EU KJ C SU A N*L SS MMS ES EU MU 1 SU.N 3 SS MS ES EU MU 4 SU-N 7 SS MS ES EU KU 8 SU.N 1 SS 2MS ES EU 1 MU 3 SU-N I SS 8MS ES 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.11 0.20 0.29 0.08 0.19 0.16 0.14 0.61 0.53 0.11 0.01 0.07 0.02 0.07 0.91 0.06 0.00 0.00 0.00 0.00 0.01 0.19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.13 0.23 0.33 0.09 0.15 0.14 0.14 0.81 0.72 0.08 0.00 0.16 0.05 0.14 1.02 0.13 0.00 0.00 0.00 0.02 0.01 0.12 0.00 0.00 0.00 0.00 0.00 0.00 0:00 0.00 0.00 0.00 0.00 0.02 0.00 0.25 0.45 0.30 0.12 0.35 0.20 0.16 1.15 0.45 0.01 0.00 0.26 0.04 0.07 0.95 0.07 0.00 0.00 0.00 0.01 0.00 0.06 0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.08 0.01 0.30 0.79 0.52 0.16 0.34 0.09 0.18 1.00 0.45 0.01 0.00 0.06 0.00 0.00 0.48 0.05 0.01 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.04 0.06 0.14 1.07 0.80 0.47 0.26 0.07 0.06 0.80 0.63 0.07 0.00 0.07 0.00 0.04 0.15 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.18 0.49 0.63 0.21 0.12 0.23 0.11 0.60 1.13 0.28 0.00 0.08 0.07 0.04 0.41 0.27 0.00 0.00 0.00 0.00 0.00 0.06 0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.18 0.27 0.22 0.09 0.23 0.08 0.19 0.80 1.24 0.19 0.01 0.15 0.07 0.11 0.73 0.63 0.00 0.00 0.01 0.00 0.05 0.05 0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.05 0.16 0.25 0.04 0.23 0.11 0.28 0.88 1.21 0.08 0.00 0.11 0.13 0.12 1.21 0.87 0.00 0.00 0.04 0.04 0.00 0.39 0.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.01 0.08 0.08 0.06 0.14 0.09 0.07 0.54 1.04 0.11 0.00 0.20 0.13 0.23 1.71 1.95 0.00 0.00 0.05 0.12 0.11 1.71 0.80 0.00 0.00 0.00 0.01 0.01 0.04 0.07 0.12 0.02 0.08 0.07 0.09 0.36 0.53 0.30 0.04 0.14 0.12 0.13 1.23 1.00 o.o8 0.00 0.18 0.11 0.14 0.87 0.33 0.00 0.00 0.00 0.00 0.00 0.02 0.09 0.16 0.11 0.07 0.07 0.11 0.84 0.88 0.21 0.01 0.32 0.11 0.16 1.57 0.47 0.04 0.00 0.11 0.04 0.04 0.49 0.06 0.00 0.00 0.00 0.00 0.00 0.11 0.25 0.33 0.22 0.29 0.09 0.21 1.14 1.52 0.99 0.19 0.34 0.28 0.25 1.01 0.26 0.01 0.00 0.12 0.05 0.06 0.23 0.01 0.00 0.00 0.00 0.00 0.00 0.12 0.43 0.94 0.41 0.55 0.27 0.26 1.28 0.86 0.32 0.02 0.48 0.26 0.22 1.75 0.16 0.01 0.00 0.16 0.12 0.08 0.96 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 o.o0 0.00 0.01 0.00 0.32 0.66 0,65 0.34 0.34 0.20 0.15 0.91 0.68 0.08 0.00 0.50 0.14 0.16 1.92 0.20 0.00 0.00 0.06 0.04 0.02 0.59 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.18 0.57 0.41 0.13 0.39 0.20 0.11 1.15 0.89 0.06 0.00 0.56 0.09 0.09 1.01 0.19 0.00 0.00 0.00 0.00 0.00 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.02 0.07 0.29 0.26 0.20 0.27 0.22 0.12 1.00 0.60 0.06 0.00 0.48 0.16 0.13 1.37 0.30 0.00 0.00 0.01 0.00 0.02 0.40 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.22 0.23 2.18 6.11 6.29 2.76 4.00 4.00 2.31 2.37 13.87 13.35 2.96 0.28 3.98 3.98 1.67 1.96 17.44 6.64 0.15 0.00 0.73 0.73 0.53 0.54 6.19 1.62 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.22 0.23 2.18 6.11 6.29 2.76 17.84 2.31 2.37 13.87 13.35 2.96 0.28 39.13 1.67 1.96 17.44 6.64 0.15 0.00 31.84 0.53 0.54 6.19 1.62 0.00 0.00 9.61 Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847)963-9ooo TABLE 11 continued-23-Braidwood Generating Station 34 ft. Wind Speed and Direction SPEED ---------------------------------

WIND DIRECTION CLASSES January-Deceter.

2009 199Ft-3OFt Oelta.T (F).....................

STABILITY CLASSES --------CLASS ' N NNE NE ENE E ESE SE SSE S SSW SW WSW WWNW NW NNW TOTAL. EU MU SU N SS MS ES TOTAL EU 1MU 9 SU-N 2SS 4MS ES EU G MU TSU N 2 S5 4HS ES 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00'0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.02 0.02 0.28 0.02 0.00 0.00 0.00 0.00 0.00 0.00 O.00 0.00 0.00 0.01 0.06 0.01 0.28 0.09 0.00 0.00 0.00 0.00 0.01 0.05 0.00 0.00 0.00 0.00 0.01 0.01 0.07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.01 0.22 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 O.O0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.16 0.16 0.09 0.07 1.04 0.15 0.00 0.00 0.00 0.00 0.00 0.01 0.05 0.00 0.00 0.00 0.09 0.07 1.04 0.15 0.00 0.00 1.52 0.00 0.01 0.05 0.00 0.00 0.00 0.06 TOT 3.79 4.54 4.97 4.57 4.75 4.99 5.40 6.31 9.67 6.58 6.06 8.05 10.08 6.07 6.13 6.04 100.00 8.91 4.82 5.18 40.77 27.87 9.40 3.04 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW N TOTAL 0.26 0.19 0.23 1.83 0.79 0.40 0.09 0.32 0.21 0.32 2.11 1.08 0.41 0.09 0.61 0.27 0.23 2.40 1.02 0.32 0.12 0.42 0.18 0.19 1.78 1.30 0.54 0.16 0.33 0.11 0.15 1.09 1.74 0.87 0.47 0.20 0.30 0.16 1.24 1.95 0.91 0.21 0.40 0.16 0.36 1.75 2.21 0.41 0.11 0.38 0.27 0.41 2.52 2.37 0.33 0.04 0.43 0.38 0.46 4.26 3.89 0.19 0.06 0.41 0.36 0.40 2.83 2.02 0.50 0.06 0.49 0.22 0.32 3.00 1.50 0.41 0.12 0.76 0.42 0.53 2.56 2.04 1.33 0.41 1.29 0.65 0.57 4.33 1.54 1.27 0.43 0.90 0.39 0.34 3.80 1.57 0.73 0.34 0.95 0.30 0.21 2.42 1.65 0.47 0.13 0.76 0.41 0.29 2.85 1.21 0.32 0.20 8.91 4.82 5.18 40.77 27.87 9.40 3.04-STABILITY CLASSES-Extremely Unstable Moderately Unstable Slightly Unstable Neutral Slightly Stable Moderately Stable Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NM NNM TOTAL 0.00 0.69 1.75 1.14 0.20 0.01 0.00 0.00 0.81 2.04 1.50 0.15 0.04 0.00 0.00 1.14 2.32 1.38 0.13 0.00 0.00 0.00 0.00 1.90 2.58 2.06 1.88 0.59 0.29 0.02 0.00 0.00 0.00 0.00 "0.00 0.00 1.54 2.46 0.87 0.12 0.00 0.00 0.00 0.80 2.74 1.69 0.16 0.00 0.00 0.00 0.50 2.79 2.43 0.56 0.02 0.00 0.00 0.27 1.99 4.22 2.78 0.40 0.00 0.00 0.27 1.48 2.70 1.62 0.46 0.06 0.00 0.39 2.19 2.66 0.73 0.09 0.00 0.00 0.90 4.43 2.15 0.47 0.09 0.00 0.00 1.90 3.55 2.89 1.41 0.33 0.00 0.00 1.97 2.37 2.93 0.73 0.07 0.00 0.00 1.31 2.79 1.95 0.08 0.00 0.00 0.00 0.87 2.26 2.45 0.45 0.01 0.00 0.00 17.84 39.13 31.84 9.61 1.52 0.06-WIND SPEED CLASSES-CALM< 3.5 mph 3.6 -7.5 mph 7.6 -12.5 mph 12.6 -18.5 mph 18.6 -24.5 mph: 24.5 mph Murray & Trettel, Inc. 6oo First Bank Drive, Si'te A Palatine, Illinois 60067 (847) 963-9000 5.5 Precipitation Monthly totals and the maximum 24-hour and maximum 1-hour precipitation amounts are summarized below. The month with the most measured precipitation was September.

The month with the least measured precipitation was November'.

The maximum 24-hour total was 3.04" (September) and the maximum 1-hour total was 1.08" (September).

Table 12 Precipitation Totals (Inches):

2008 Braidwood Site Maximum Maximum Month Total 24-hour 1-hour January 0.50* 0.15" 0.09*February 1.61* 0.53* 0.16'March 1.19" 0.81* 0.18" April 1.55 0.60 0.30 May 3.25* 1.67' 0.90*June 3.06 0.86 0.64 July 3.27* 0.54* 0.45*August 1.09* 0.81* 0.51'September 11.66 3.04 1.08 October 2.27 0.73 0.29 November 0.34* 0.17* 0.04*December 3.60* 1.02* 0.26'TOTAL: 33.39** some data are missing -actual precipitation may be under-reported Murray & Trettel, Inc. 600 First Bank Drive, Suite A Palatine, Illinois 60067 (847) 963-gooo

-2S-5.6 Doses Resulting from Airborne Releases The following are the maximum annual calculated cumulative offsite doses resulting from Braidwood Station airborne releases.Unit 1: Dose gamma air beta air (2)whole body 13)skin (4)organ (4 (teenager-thyroid)

Unit 2: Dose gamma ai(1)beta air (2)whole body (3)skin (4)organ (10 (teenager-thyroid)

Maximum Value 3.231 3.583 1.659 1.483 3.191 x x x x x 104 mrad 10"3 mrad 104 mrem 10- mrem 103 mrem Sector Affected West West West West West Maximum Value 3.136 x 10.2 mrad 3.327 x 10.2 mrad 1.786 x 10.2 mrem 5.944 x 10.2 mrem 7.644 x 10-3 mrem Sector Affected West West West West West 11)(2)131 (')(83 Gamma Air Dose -Finite Cloud Model; M+T ODCM Rev. 9 Beta Air Dose -Finite Cloud Model; M+T ODCM Rev. 9 Whole Body Dose -Finite Cloud Model; M+T ODCM Rev. 9 Skin Dose -Finite Cloud Model; M+T ODCM Rev. 9 Inhalation and Food Pathways Dose -Finite Cloud Model; M+T ODCM Rev. 9 Murray & Trettel, inc. 6oo rstBank Driue, Suite A Palatine, Illinois 6oo67 (847)963-9000 TABLE 13 Braidwood Station -Unit 1 MAXIMUM DOSES RESULTING FROM AIRBORNE RELEASES 2008 TYPE OF DOSE FIRST QUARTER SECOND QUARTER THIRD QUARTER FOURTH QUARTER ANNUAL GAMMA AIR (mrad)BETA AIR (mrad)WHOLE BODY (mrem)SKIN (mrem)ORGAN (mrem)CRITICAL PERSON CRITICAL ORGAN 3.480E-06( N )1.410E-04( N )1.250E-06( N )6.260E-05( N )2.290E-05( N )3.21CE-04( W ) 9.170E-08( W )3.520E-03( W ) 9.300E-07( W )1.650E-04( W ) 6.680E-08( W )1.450E-03( W ) 3.350E-07( W )2.670E-03( W ) 4.830E-04( W )1.590E-08( N 1.120E-06( N 5.040E-09( N S.120E-07( N 3.240E-05( N)))))3.231E-04( W )3.583E-03( W )1.659E-04( W )1.483E-03( W )3.191E-03( W )Teenager Thyroid Teenager Thyroid Teenager Liver Teenager Liver Teenager Thyroid COMPLIANCE STATUS TYPE OF DOSE GAMMA AIR (mrad)BETA AIR (mrad)WHOLE BODY (mrem)SKIN (mrem)ORGAN (mrem)CRITICAL PERSON CRITICAL ORGAN 10 CFR 50 APP. I QUARTERLY OBJECTIVE 1 5.0 10.0 2.5 7.5 7.5 10 CFR 50 APP.I OF APP. I YEARLY OBJECTIVE 0.01 0.04 0.01 0.02 0.04 10.0 20.0 5.0 15.0 15.0 S OF APP. I 0.00 0.02 0.00 0.01 0.02 Teenager Thyroid Teenager Thyroid Calculation used release data from the following:

Unit I Vent Date of calculation:

41 9/2009 Murray & Trettel, Inc. 600 First Bank Drive, Suite A Palatine, Illinois 6oo67 (847) 963-gooo TABLE 13 continued Braidwood Station -Unit 2DOSES RESULTING FROM AIRBORNE RELEASES 2008 TYPE OF DOSE FIRST QUARTER SECOND QUARTER THIRD QUARTER FOURTH QUARTER ANNUAL GAMMA AIR (mrad)BETA AIR (mrad)WHOLE BODY (mrem)SKIN (mrefn)ORGAN (mrem)CRITICAL PERSON CRITICAL ORGAN 4.590E-06(I .SOCE-04(1. 720E-06(6.540E-05(2.330E-04(N N N N N))2.960E-03( W 3.030E-02( W 1.460E-03( W 1.060E-02( W 2.570E-03( w)))})2.840E-02( W )3.290E-02( W )1.640E-02( W )4.880E-02( W )4.790E-03( W )1.260E-06( N 6.240E-06( N 6.200E-07( N 4.290E-06( N 2.150E-04( N)))))3.136E-02( W )6.327E-02( W 1.786E-02( W )5.944E-02( W )7.644E-03( N )Teenager Liver Teenager Thyroid Teenager Liver Teenager Liver Teenager Thyroid COPLIANCE STATUS TYPE OF DOSE GAMMIA AIR (mrad)BETA AIR (mrad)WHOLE BODY (mrem)SKIN (mrem)ORGAN (mrem)CRITICAL PERSON CRITICAL ORGAN 10 CFR 50 APP. I QUARTERLY OBJECTIVE 5.0 10.0 2.5 7.5 7.5 10 CFR 50 APP.I I OF APP. I YEARLY OBJECTIVE 2 OF APP. I 0.57 0.33 0.66 0.65 0.06 10.0 20.0 5.0 15.0 15.0 0.31 0.32 0.36 0.40 0.05 Teenager Liver Teenager Thyroid Calculation used release data from the following:

Unit 2 -Vent Date of calculation:

4/ 9/2009 Murray & Trettel, Inc. 600 First Bank Drive, Suite A Palatine, Illinois 6oa67 (847) 963-gooo APPENDIX Murray & Trettel, Inc. 6oo First Bank Drive, Suite A Palatine, Illinois 60067 (847) 963-9000 Exelon Contract Number 80633 Braidwood Meteorological Calibration Date: E4 7/07 R-25 Page 1 of 7 POWER SUPPLIES+15.OOOV*

0. 150V A:+ V B:+ v-15.OOOV t 0.150V A:- I Z3 V B:- 033 V Signal Conditioners I Digital Recorder.R~innnl C AF Conditioner Voltage Out DiOital recorder AL AL EQUIV AF AL 3 ft.-v .ci r ,. " --V I.O'(.) 1,C;') " -- " Specifications PRCPLO , C!;U V PRCP HI V. V WS ZERO OI ' V WS SPAN 4t-Jt0 V r,,) ZERO. c. V SPAN V TLO _.y.17 V T HI _.___V THI-LO ____.V DP LO ,'5.I V DPHI .V DP HI-LO V 34 ft .-" V LZ2 mph C,' mph "__mph-V -'Ci mph Q7 mph -mph-v

• o 2. ..-___V 5"'Z.317 .q. 0 v-2. 1. -ZI.a 1 a --v f~g,/jq. 121,'C 0 °-V""___ V ___,_, -j'.7TC, --v /6. G",

• i2S;9'5° -°-. V Signal Cond.0.050V +/- 0.050V 5.OOOV i 0.050V 0.015V t 0.025V 5.000V +/- 0.025V 0.000v +/- 0. 100v 5. OOOV +/- 0. 1 OV 5.OOOV +/- 0.050V 5.O00V i 0.050V 0.015V +/- 0.025V 5.OOOV +/- 0.025V 0.ooOV +/- 0. 100V 5.OOV+/- 10. 1 OV 5.OOOV +/- 0.200V Recorder AL EQUIV +/- 0.01" AL EQUIV +/- 0.01" AL EQUIV +/- 0.1mph AL EQUIV +/- 0.1mph AL EQUIV +/- 1 0 AL EQUIV+/- 10 AL EQUIV 1 0.1°F AL EQUIV 1 0.1°F AL EQUIV +/- 0.1PF AL EQUIV i O.°F WS ZERO .. C" I5' V WS SPAN Y 99 3 V WDZERO, I b V WD SPAN j'. c$18 V ATLO VC({ V AT HI q.763 V AT HI -LO 6, 0 2VV 203 f (-V 7.3 mph'.6)O V /40' mph-v =-v-it, -: ~v ____'- V£).3 mph " mph 9'i,(' mph -mph 90 -o 9,b .° -°AL EQUIV t 0.1mph AL EQUIV +/- 0.1mph AL EQUIV: 10 AL EQUIV +/- 1 o AL EQUIV +/- 0.1°F AL EQUIV +/- 0.1°F Murray & Trettel, Inc.

• 600 First Bank Drive, Suite A .Palatine, Illinois .60067 9 (847) 963-90o0 Exelon Contract Number 80633 E5 7/07 Braidwood Meteorological Calibration R-25 Page 2 of 7 Date: "y(: 0 TOWER MEASUREMENTS Ambienrt Ice Bath Temiveratures Measured Recorded Difference Specification 30 ft. Amb. 199 ft. AT AF AL AF AL 2 .f x°F -- °F ..83"F

-F:,3e -OF '?7 5 7 F O F.10 OF O °F w oF -F°F+/-0.50F +/-0.18°F 30 ft. dew point AF AL I7. co F -F iS.C" .F O_°F 1 .q, °F -°F+/-2.7OF WS stall Forw. WD Revr. WD 34 ft.AF AL.9,3mph .Q.__,.mph U14/inds 203 ft, AF AL 0 .mph g3mph i ...Specification 0.3mph +/- 0.45mph 30/3630

• 50 1830 +/- 50 Tracking/wear Comments: o " r 051 J" ' f3 F7 Yr'D9,.1 1,U WLOT -34' L&A CotvpX- 065k-. A/ 010-7e-$ -1'-f/1,Vg lee!'ty A& 14 iaT 5,'oA .C6(/"O" Wib / OA, ý,../, Murray & Trettel, Inc. -60o First Bank Drive, Suite A -Palatine, llinois .60067 2 (847) 493-906o zxu.Lonf %ýancracL N~umner uuojs Braidwood Meteorological Calibration E6 7107 R-25 Page 3 of 7 Date: C , Dates of Last Wind Sensor Bearing Replacements:

(6 mos.) Wind Speed: ' --Dt (12 mos.) Wind Direction:

"7.11 203 ft.30 ft. 199 ft.* -k Aspirators:

1, )- 4) K Operation of De-ice Heat Lamp System (Aug-Mar):

01K Operation of Rain Gauge: 01..Debris screen: In / Installed Removed Tower LiahtingI Good Fair Poor Tower Condition Good Fair Poor Beacon ,a' 0 0l Paint 2 0'l 0 Side lights -0 El El Guy wire tension 2r 0 0 Wiring Er El El Flasher EJ E3 El Shelter condition

.2 El El Note: Calibration Instruments:

AF = As Found Psychrometer-S/N /.AL = As Left Digital multimeter-SIN -,C- ,. ---= no change (AF=AL) Digital multimeter

-S/N -FS = Full Scale echnicians:

,4II e 't1*D, m4 k /" ir M 14 Comments:-r pIVg 9010, .y, 1"" r: IM. 11" i -g /4,/i I I I0f(.fre.m0-Signature:

'U .Murray & Trettel, Inc.

• 6oo First Bank Drive, Suite A .Palatine, Illinois.

60067 2 (847) 963-9000 E7 7/07 R-25 Page 4 of 7 System Response Check Date: Ij 't ty Site: Braidwood System: Microtel Murray & Trettel, Inc.

• 6oo First Bank Drive, Suite A .Palatine, Mllinois -600672 (847) 963-9000 E8 7107 R-25 Page 5 of 7 System Response Check Date: Site: Braidwood System: Process Computer -English Units Low Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' AT 30' DP Precipitation Expected +/- +/-2 , +/-0.4 t-2 ,7. +0.5 .-+/-0.18 -7.&, +0.5 .6(0 +/-0.01 As Found -6.6 Response 0O, jO.3 _-0_..As Left ..... .-Response _Mid Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' aT 30' DP Precipitation Expected Response +/- +/-0.4 2?) :1t2 +/-0.4 +/-2 .9 .+/-0.5 r.),V +/-0.18 .j..0 +/-0.5 ._5 S1 +/-0.01 As Found Response 2 iI Z__ _9) ,)N _ _ _As Left --..Response Full Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' AT 30' DP Precipitation Espected _ L) +/-0.4 +/-.4 Y66+/-. +/-2 /C +/-, +0.5 LI. +/-0.18 IC +/-4 +/-0.5 '9 ) +/-0.01 As Found Response Cit-, Z._-. &W,. 3-o. ",9 -6qV As Left I.- -1 .Response I-~~~1 (yoi o( ~uafj The. 1C IT' ; c j,4r WotFl.4 fDfLO ,4 i ,11;;me- q4& ,/0 7 -Murray & Trettel, rnc. -6oo First Bank Drive, suite A -Palatine, flhinois -60067 2 (847) 963-9000 E9 7/07 R-25 Page 6 of 7 System Response Check Date: 3 -&-0-," Site: Braidwood System: Process Computer -Metric Units Mid Scale Y4000 Y4001 Y4002 30'T Y4003 Y4004 Y4005 Y4006 ,Chck_ L... 34'WD 34'WS 199'AT 30' DP 203' WD 203'WS Expected .ý +/-2 Z -2 3+/-0..2 / .. +/-0.3 +/-0.1 iC c) +/-0.3 Z.-Z +/-2 Response .... " As Found Response "207I,3 ZZ(, IC -. zZ.-5" As Left Response "'-Full Scale Y4000 Y4001 Y4002 Y4003 Y4004 Y4005 Y4006 Check 34' WD 34' WS 30' T 199' AT 30' DP 203' WD 203 WS Expected +/-2 +/-0.2 +/--..) +0.3 +/- +/-0.1 2-. *:0.3 +/-, +/-2 ý/-),5" t0.2 Response As Found Response 1! ') __._/.7 497- z- ,-/As Left Response --__Murray & Trettel, Inc. -6oo First Bank Driue, Suite A .Palatine, Jllinois.

60067 V (847) 963-9000 E10 7107 R-25 Page 7 of 7 System Response Check Date: -Site: Braidwood System: Control Room Indicators Mid Scale 34' WS 203' WS 34' WD 203' WD 34' T 199' AT 30' DP Check Expected Response --)U) +/-0.4 9).u +/-0.4 ;L) +2 "-7L) +/-2 ý 0 +/-0.5 O _*+/-0.18 b.. +/-0.5 As Found Response SO.YY -f(.Z 2_-7/_l ______ L__ __ _______As Left ...Response Murray & Trettel, Inc. -60o First Bank Driue, SLte A -Palatine, Illinois .60o67 I (847) 963-9o00 Exelon Contract Number 80633 Braidwood Meteorological Calibration E4 6/08 R-26 Page 1 of 7*)'(.~Date: Date: POWER SUPPLIES+15.OOOV +/- 0.150V A: + O V B: + 15. 0O \ V.15.OOOV +/- 0.150V A: -1516--V 8:- 15.63-1 V Signal Conditioners I Digital Recorder: Signal Conditioner Voltaqe Out Digital recorder Specifications AF AL AL EQUIV PRCPLO = V PRCPHI V V V.0k-V I. F AF AL 3 f t C). C> I ( , " WSZERO 0o.ol- V WS SPAN . :o0 V WD ZERO .j-.0, V SPAN 5J. Q V ILO

• 07,0 V T HI .,00' V T HI- LO LIý V DP LO ,151- V DP HI 5 52. V DP HI-LO Me- V 34 ft,-V Q.3, mph o0,' mph -mph-V 10o0o! mph Wo.% mph " mph-Vi,-TZ 0 2. 0 V 5" 1.5" ° .5 -° -a-V -Z.aZ ° ---.° -°" V-V i0.. 0L * )-? ob -a-V IL(, :51 0,.'o V Signal Cond.0.050V + 0.050V 5.OOOV +/- 0.050V 0.015V +/- 0.025V 5.000V +/- 0.025V 0.000V +/- 0.100V 5.OOOV +/- 0.100V 5.000V t 0.050V 5.OOOV +/- 0.050V 0.015V +/- 0.025V 5.OOOV +/- 0.025V 0.000V +/- 0.100V 5.OOOV +/- 0.100V 5.000V i 0.200V Recorder AL EQUIV 1 0.01" AL EQUIV +/- 0.01" AL EQUIV +/-0.1mph AL EQUIV +/- 0.1mph AL EQUIV +/- 1*AL EQUIV t 10 AL EQUIV 10. 1F AL EQUIV +/- 0.1°F AL EQUIV +/- 0.1 0 F AL EQUIV +/- 0.1 0 F AL EQUIV 10.1rnph AL EQUIV +/- 0.1mph AL EQUIV +/- 10 AL EQUIV +/- 10 AL EQUIV +/- 0.1 0 F AL EQUIV +/- 0.10F WS ZERO..Oýý%v WS SPAN 5. 00_V WD ZERO .12%j-V W DS P AN J._0 --V AT LO -OýA V AT HI q ,CO,3 v AT HI -LO 5.03Y V 203 f t-V mph rDQQ V IM.0 mph-v 0-V a--V 0.-5 mph -mph JO0 mph -mph 0 -o Ot,92.° -°Murray & Trettel, Inc.

• 6oo First Bank Drive, Suite A .Palatine, Illinois .60067 9 (847) 963-9000 Exelon Contract Number 80633 E5 6/08 Braidwood Meteorological Calibration R-26 Page 2 of 7 Date: 7-fO .TOWER MEASUREMENTS IZ Ambient [-] Ice Bath Temoeratures Measured Recorded Difference Specification WS stall Forw. WD Revr. WD Trackinglwea 30 ft. Amb.AF AL A___,__O°F

-F "-."-__B_ __°F -"F.13 OF -°F ,-0.5°F *0.'34 ft.AF AL 0. .mph 1.3 mph S -3(03 0 199 ft, AT F AL 40 °F -- OF"' OF .OF b oF " °F 18°F 30 ft, dew Doint AF AL 2.S OF '-&WF*L2.7 0 F rinds 203 ft.AF ALmph __._mph o 0°OIL Soecification 0.3mph +/- 0.45mph 30/3630 1 5 1830 +/- 50 ar Olt Comments: 3Lji WJS OaT /KT 00 IO WD iIX Arr" a j0-WO o j1 nw oitI Murray & Trettel, Inc.

• 6oo First Bank Drive, Suite A .Palatine, Illinois .60067 V (847) 963-9000 Braidwood Meteorological Calibration E6 6108 R-26 Page 3 of 7 i Date: 7"_10_0e Dates of Last Wind Sensor Bearing Replacements:

71 34ft (6 mos.) Wind Speed: (12 mos,) Wind Direction:

203 ft.ia- 3-08 3 tU-8_30 ft. 199 ft.Aspirators:

ID K LOf Operation of De-ice Heat Lamp System (Aug-Mar):

At A'I Operation of Rain Gauge: D:)-Debris screen: In' Out Installed Removed Tower Lightina Good Fair Poor Tower Condition Good Fair Poor Beacon 0 0 El Paint 0 E0 Side lights 0 0 E Guy wire tension c] 0 0 Wiring 3 -0 Flasher -0 0 Shelter condition Ui -]Note: Calibration Instruments:

AF = As Found Psychrometer

-SIN -rwi- to4 AL = As Left Digital muttimeter

-SIN -5%401-= no change (AF=AL) Digital multimeter

-SIN -FS = Full Scale echnicians: mpn,, A l.r4'- , Comments: Signature:

4t32- I3 Murray &Trettel, Inc. -600 First Bank Drive, Suite A -Palatine, Illinois -60067 V (847) 963-9000 E7 6/08 R-26 Page 4 of 7 System Response Check Date: 16.06 Site: Braidwood System: Microtel Mid Scale 34' WS 203' WS 34' WD 203' WD 30' T 199' 30' DP Check.Expected 50.0 +/-0.4 50.0 +0.4 270+/-2 270 +/-2 50.00 +/-0.5 0.00 .0.18 50.00 +/-0.5 Response r_As Found Response qct.. ..70 5),O O,- e.As Left Response ....Full Scale 34' WS 203' WS 34' WD 203' WD 30' T 199' AT 30' DP Check Expected 90.0 +/-0.4 90.0 +/-0.4 486 +/-2 486 +/-2 107.60 +/-0.5 8.00 +/-0.18 107.60 +/-0.5 Response ,, As Found Response qC?.o qOO J,. 07., (As Left Response .... -Murray & Trettel, Inc.. 6oo First Bank Drive, Suite A .Palatine, llinois -60067 % (8 47) 963-9ooo E 6/0 R-2 System Response Check Page 5 of Date: 7-iO -l 083 Site: Braidwood System: Process Computer -English Units Low Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' AT 30' DP Precipitation Expected 10.0 +0.4 54 +/-2 10.0 +/-0.4 54 +/-2 -7.60 +/-0.5 -8.00 +/-0.18 -7.60 +/-0.5 0.10 +/-0.01 Response ...As Found Response ./O.3f "__.,__ 2{. " , 9- , 21. 54.- .As Left -- -Response Mid Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' t&T 30' DP Precipitation Expected 50.0 +/-0.4 270 +/-2 50.0 +/-0.4 270 +/-2 50.0 +/-0.5 0.00 +/-0.18 50.0 +/-0.5 0.50 +/-0.01 Response ....As Found Response 56O.2B 2Th~q7 5"5, 2 .6 ), 2-z) -O.o-3R Ibo 1 As Left Response f ..-Full Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' AT 30' DP Precipitation Expected 90.0 +/-0.4 486 +/-2 90.0 +/-0.4 486+/-2 107.60 +/-0.5 8.00 +/-0.18 107.60 +/-0.5 0.90 +/-0.01 Response .. ....As Found Response If 87-12 ofo____ L~(,3 ,o&.1 _____ _(_1.__ __9__1 As Left Response --.--X j 1/*7/S dr, ?fbc-cJ4&

e-oAtR ý9,90 (2 OecA/ e3io-tbi i)T D~~s-ru' &- DAr5A!Lr)

'Y1 eo/ ~bY AS-9-01,10 J 7 J7.Murray & Trettel, Inc. -6oo First Bank Drive, Suite A .Palatine, Illinois -60o67 3 (847) 963-9ooo E9 6/08 R-26 Page 6 of 7 System Response Check Date e /0-69 Site: Braidwood System: Process Computer-Metric Units Mid Scale Y4000 Y4001 Y4002 Y4003 Y4004 Y4005 Y4006 Check 34' WO 34' WS 30' T 199' AT 30' DP 203' WD 203' WS Expected 270t2 22.35+/-0.2 10.00 -0.3 0.00 t0.1 10.00 *0.3 270 +/-2 22.35 +/-0.2 Response As Found Response.

3-5B"" 7-1 ,- A ( C-I O.-F ce:Q 2-)Z. 5Z.H6 As Left -Response Full Scale Y4000 Y4001 Y4002 Y4003 Y4004 Y4005 Y4006 Check 34' WD 34' WS 30'T 199' AT 30' DP 203' WD 203' WS Expected 486 t2 40.5 +/-0.2 42.00 +/-0.3 8.50 -0.1 42.00 +/-0.3 486 +/-2 40.5 +/-0.2 Response As Found Response 31 AZ -9,151opo Murray & Trettel, Inc.. 6o0 First Bank Drive, Suite A -Palatine, illinois .60067 W (847) 963-9ooo El 61C R-2 Page 7 of Date:_______)

System Response Check Site: Braidwood System: Control Room Indicators Mid Scale 34' WS 203' WS 34' WD 203' WD 34' T 199' AT 30' DP Check Expected 50.0 +/-0.4 50.0 +/-0.4 270 +/-2 270 +/-2 50.00 t0.5 0.00 +/-0.18 50.0 +/-0.5 Response As Found Response L(O, (A33 I1 .. .-.1'As Left Response ......Full Scale 34' WS 203' WS 34' WD 203' WDI 34'T 199' AT 30' DP Check Expected 90.0 +/-0.4 90.0 1-0.4 485 t2 486 +/-2 107.60 +/-0.5 8.00 +/-0.18 107.60 +/-0.5 Response As Found Response ____ 03 ________As Left .--Response ___Murray & Trettei, Inc.

• 600 First Bank Driue, Suite A .Palatine, Illinois .60o67 2 (847) 963-9ooo Exelon Contract Number 80633 Braidwood Meteorological Calibration Date: P-_7-00 E4 6/08 R-26 Page 1 of 7 POWER SUPPLIES+15.OOOV*

0.150V A:+ 1. (0tv V B:+ 0,l'1' V Signal Conditioners I Digital Recorder:-15.OOOV +/- 0.150V A:- 15,',13 V B:- I,.',L- V Signal Conditioner Voltage Out Dialtal recorder Specifications PRCPLO Oi)'PRCP HI .C AF AL AL EQUIV AF AL 3 ft.3;) V -V o0. " L). \ ok -- , 7. v iO " 10r , -, 34 ft WSZERO k.0i?- V WSSPAN.WOL_

V ZERO 0.Ol V WD SPAN , 0t14 V T LO 0011 V THI THI-LO VA'1'l V DP LO ')03C' V DP HI " V DP HI-LO V-V-V"- V V-v V-V-63 V-V-.2.,-t mph #, ; .mph "-_ mph IO,-.-.- mph ij0.O mph _-_mph 9;i. i q -LI2.. 0 ..at,(,- --JA.'I. I o -o Signal Cond, 0.050V +/- 0.050V 5.OOOV t 0.050V 0.015V +/- 0.025V 5.OOOV +/- 0.025V 0.0000V +/- 0.100V 5.OOOV +/- 0.100V 5.OOOV +/- 0.050V 5.OOOV t 0.050V 0.015V

• 0.025V 5.000V +/- 0.025V 0.000v + 0.100V 5.OOOV +/- 0. lOOV 5.OOOV +/- 0.200V Recorder AL EQUIV +/- 0.01" AL EQUIV +/- 0.01" AL EQUIV +/- 0.1mph AL EQUIV +/- 0.1mph AL EQUIV +/- 1 0 AL EQUIV + 10 AL EQUIV +/- 0.1OF AL EQUIV +/- 0.1OF AL EQUIV 10.1OF AL EQUIV +/- 0.1OF-Li,0-X1,.09 0-' Oa WS ZERO -.I01_V -v WS SPAN _!L-9-1 V -V WDZERO D. iI V V WDSPAN 5 0'. 4i_ V __V ATLO -.-080 V -V AT HI ,444O V -v&T HI -LO 5. 07"O V " V 203 ft, o, V6 mph 0i 3 mph "---mph 99-19 mph q969 mph -mph 7, a t L .-- a a ".1 ," ' -.5"11- 0 *o --3 AL EQUIV I 0.1mph AL EQUIV +/- 0.1mph AL EQUIV +/- 18 AL EQUIV+/- 11 AL EQUIV +/- 0.10F AL EQUIV +/- 0.1 0 F Murray & Trettel, Inc.

• 6oo First Bank Driue, Suite A .Palatine, Illinois .60067 3 (847) 963-90oo Exelon Contract Number 80633 E5 6/08 Braidwood Meteorological Calibration R-26 Page 2 of 7 Date: i 1- -* LCi, TOWER MEASUREMENTS 0 Ambient 0] Ice Bath Measured Recorded Difference Specification WS stall Forw. WD Revr. WD Tracking/wear 30 ft. Amb.AF ALoF -F U81' oF oF ,0q F _-__ F+/-0.5 0 F 34 ft.AF AL o-r'( mph"3*r, _ 0 --1'~3 o oIL Temperatures 199 ft. AT 30 ft. dew point AF AL AF AL.- I,40O°F ____OF a°F 31.i'OF*-j.,3' oF -2 f-.10 OF : OF D' °F -OF -__°F -. -, °F-O.18OF '030 +/-2.70F Winds 203 ft.AF AL Specific._mph .7.- mph 7- mph 0.3mph-o __0 30/3630*i~ 0 -0 1830 +/-ation+ 0.45mph So Comments: IA1 hi4 ryl r (kA 4 T IA,)' IA 1.) vr -4 VAT On't b ii rA4 Mr~7 w54~M.;nt 96L3x-000 Murray & Trettel, Inc. -6oo First Bank Drive, Suite A -Palatine, Illinois.-

600673I (847) 963-9000 E6 6108 Braidwood Meteorological Calibration R-26 Page 3 of 7 Date: ,/ V a Dates of Last Wind Sensor Bearing Replacements:

34 ft. 203 ft.(6 mos.) Wind Speed: #-7/('10 //"-"7.(12 mos.) Wind Direction:

7," 1t P bq 30 ft. 199 ft.Aspirators:

__-- t) IC_Operation of De-ice Heat Lamp System (Aug-Mar):

OtC, K Operation of Rain Gauge: CA., Debris screen: In Out Installed

=o Tower Lighting Good Fair Poor Tower Condition Good Fair Poor Beacon U r:l El Paint f 0- 0-Side lights L [f E] 'E Guy wire tension ' E" El Wiring t-J E- El Flasher " " l E- Shelter condition O'Note: Calibration Instruments:

AF = As Found Psychrometer

-S/N -fA'-r 1C'i AL = As Left Digital multimeter

-S/N -I "zc 4 C 0-= no change (AF=AL) Digital multimeter

-S/N -FS = Full Scale echnicians:

IU YE 10941.Alt

_P104 , __,_____,____

Comments: Re~l..14ED N-eTZoP(kizý y qO I-7 5TILL RA&..e-6i040 .VQY A Hee,-'j.0N$. Signature:

Murray & Trettel, Inc.

• 6Fi Bank Drive, Suite A .Palatine, Illinois.

60067 3 (847) 963-9000 E7 6/08 R-26 Page 4 of 7 System Response Check Date: i (,-) "-OC3 Site: Braidwood System: Microtel Low Scale 3 WS 203' WS 34' WD 203' WD 30' T 199' AT 30' DP Check Expected 10.0 +/-0.4 10.0+/-0.4 54+/-2 54:+/-2 -7.60 +/-0.5 -8.00 +/-0.18 -7.60 +/-0.5 Response As Found Response q~q 53 g3 -Ti -8.o -7." As Left .....Response Mid Scale 34' WS 203' WS 34' WD 203' WD 30' T 199' AT 30' DP Check Expected 50.0 +/-0.4 50.0 +/-0.4 270 +/-2 270:+/-2 50.00 +/-0.5 0.00 +/-0.18 50.00 +/-0.5 Response As Found Response £"0 , _ -_o __ __ c~o As Left Response Full Scale 34' WS 203' WS 34' WD 203' WD 30' T 199' AT 30' DP Cpeck Expected 90.0 +/-0.4 90.0+/-0.4 486 +/-2 486 +/-2 107.60 +/-0.5 8.00 +/-0.18 107.60 +/-0.5 Response As Found Response q/o g.q Li / ).qo., _o-____As Left _ , .Response o_Murray & Trettel, Inc. -6o0 First Bank Driue, Suite A .Palatine, llinois .60067 9 (847) 963-9000 E8 6/08 R-26 Page 5 of 7 System Response Check Date: i " "?-1, Site: Braidwood System: Process Computer -English Units Low Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34 WD 203' WS 203' WD 30' T 199' AT 30' DP Precipitation Exlpected 10.0 +/-0.4 54 +/-2 10.0 +/-0.4 54+/-2 -7.60 +/-0.5 -8.00 +/-0.18 -7.60 +/-0.5 0.10 +/-0.01 Response As Found Response A_._ _ __ 13- -J.5 -e.oo -ORo As Left .-Response Mid Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' AT 30' DP Precipitation Expected 50.0 +/-0.4 270 +/-2 50.0 +/-0.4 270 +/-2 50.0 +/-0.5 0.00 +/-0.18 50.0 +/-0.5 0.50 +/-0.01 Response As Found Response x."___ IL4 AT,91 __5_._, r-MOA 23Z. O, As Left -._Response

._FuJI Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' AT 30' DP Precipitation Expected 90.0 +/-0.4 486+/-2 90.0 +/-0.4 486 +/-2 107.60 +/-0.5 8.00 +/-0.18 107.60 +/-0.5 0.90 +/-0.01.Response As Found Response 4e 1~ o. ___ b. o) ~ .c As Left -- ---Response* qoj( Cu ee-Y geaaems oiUF co,%P. cIfIa'> wr I' )'te 7-0 C.9")'/34 7A V' LO/0~*~"DI )I(oJ Oi(. AeADaAAl4-0 N6 t4 Lc~fl' UPUfL 62fWJteO Th. -5, J-j 'TI A~q 1~6AJ7Itj Murray & Trettel, Inc.

• 600 First Bank Drive, Suite A

• Palatne, llinois -60067 3 (847) 963-9000 E9 6/08 R-26 Page 6 of 7 System Response Check Date: / 1- 7-(8 Site: Braidwood System: Process Computer -Metric Units Low Scale Y4000 Y4001 Y4002 Y4003 Y4004 Y4005 Y4006 Check 34' WD 34' WS 30' T 199' AT 30' DP 203' WD 203' WS Expected 54+/-2 4.5 +/-0.2 -22.00 +/-0.3 -8.50 +/-0.1 -22.00 +/-0.3 54.t2 4.5 +/-0.2 Response .....As Found Response 44.L) , Z1.'- .)--,A -S, '? ______ (0 As Left.... -Response Mid Scale Y4000 Y4001 Y4002 Y4003 Y4004 Y4005 Y4006 Check. 34' WD 34' WS 30' T 199' AT 30' DP 203' WD 203' WS Expected 270 +/-2 22.35+/-0.2 10.00 +/-0.3 0.00 +/-0.1 10.00 +/-0.3 270 +/-2 22.35 +0.2 Response As Found Response 7 zz. 10.0 2.M As Left Response Full Scale Y4000 Y4001 Y4002 'Y4003 Y4004 Y4005 Y4006 Check 34' WD 34' WS 30' T 199' AT 30' DP 203' WD 203' WS Expected 486 +/-2 40.5 +/-0.2 42.00 +/-0.3 8.50 +/-0.1 42.00 +/-0.3 486 +/-2 40.5 +/-0.2 Response As Found Response ____ I__ 4____, _ 2-_____ ___I__ _____(9___1__

, As Left- q-Res;onse ....*ýyqaOl &v,fL&gc A.3,o'TLO O 47.,1 SCAiie Cl.ek-a, All 6A 4L..Murray & Trettel, Inc.

• 600 First Bank Driue, Suite A

• Palatine, Illinois -60067 W (847) 963-9000 E10 6/08 R-26 Page 7 of 7 System Response Check Date: JI. "7 ".0e;Site: Braidwood System: Control Room Indicators Low Scale 34' WS 203' WS 34' WD 203' WD 34' T 199' AT 30' DP Check Expected 10.0+/-0.4 10.0 +/-0.4 54 .2 54+/-2 -7.60 +/-0.5 -8.00 +0.18 -7.60 +/-0.5 Response As Found 07 Response L) --8. As Left ..Response -Mid Sca 34' WS 203' WS 34' WD 203' WD 34' T 199' AT 30' DP Check Expected 50.0 +/-0.4 50.0 +/-0.4 270 +/-2 270+/-2 50.00 +/-0.5 0.00 +/-0.18 50.0 +/-0.5 Response As Found Response _ __ 6_b____.0__0_

As Left ...- -Response Full Scale 34' WS 203' WS 34' WD 203' WD 34' T 199' AT 30' DP Check Expected Repne90.0

+/-0.4 90.0 +/-0.4 486+/-t2 107.60 +/-0.5 i 8.00 +/-0.18 107.60 +/-0.5-Response As Found Response ___0__4 0________

~17 1.0 o As Left A .-Response ._ _cwr Oý Sede rr-KC007-AT-4'10-)e A, W-r.N" Rde_4"Oexýs hAY'6- W L -C"..CA J 00 t6f- g~deeO IODAJIý Ob) IA4).Murray & Trette4 Inc. -6oo First Bank Driue, Suite A .Palatine, ilnois -60067 9 (847) 963-9000