ML061250292

Annual Radioactive Effluent Release Report No. 31 for 2005

ML061250292
Person / Time
Site:	Limerick
Issue date:	12/31/2005
From:	Exelon Generation Co
To:	Office of Nuclear Reactor Regulation
References
Download: ML061250292 (117)

Text

Exelc!on Nuclear T . ~ k-'4I":

Annual Radioactive Effluent Release Report No. 31 2005 Limerick Generating Station

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT NO. 31 January 1, 2005 Through December 31, 2005 EXELON GENERATION COMPANY, LLC LIMERICK GENERATING STATION UNITS NO. I AND 2 DOCKET NO. 50-352 (Unit 1)

DOCKET NO. 50-353 (Unit 2)

Submitted to The United States Nuclear Regulatory Commission Pursuant to Facility Operating License:

NPF-39 (Unit 1)

NPF-85 (Unit 2)

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SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE OF CONTENTS SECTION PAGE

1. Introcuction

2. Supplemental Information l A Regulatory Limits B Maximum Permissible Concentrations 2 C Average Energy 2 D Measurements and Approximations of Total Radioactivity :2 E Batch Releases 4 F Abnormal Releases 4 G Revisions to the ODCM .5 H Compliance to 40 CFR Part 190 Limits S

3. Appendix A - Effluent and Waste Disposal Summary 7

4. Appendix B - Solid Waste and Irradiated Fuel Shipments 21

5. Appendix C - Radiological Impact to Man 27

6. Appendix D - Meteorological Data 31

7. Appendix E - Corrections to Previous Submittals 109 Page i

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SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC

1. Inlroduction In accordance with the reporting requirements of Technical Specification 6.9.1.8 applicable during the reporting period, this report summarizes the effluent release data for Limerick Gonerating Station Units 1 and 2 for the period January 1, 2005 through December 31, 2005.

This submittal complies with the format described in Regulatory Guide 1.21, "Measuring, Evaluating and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water Cooled Nuclear Power Plants",

Revision 1, June, 1974.

All vendor results were received and included in the report calculations. Therefore the 2005 report is complete.

2. Supplemental Information A. Regulatory Limits Limit Units Receptor ODCM and 10 CFR 50, Appendix I Desiqn Obiective Limits

1. Noble Gases:

a. < 500 mreml~r Total Body ODCM Control 3.2.2.1.a

' 3000 mrem/Yr Skin

b. <10 mRad Air Gamma Quarterly air dose limits

< 20 mRad Air Beta ODCM Control 3.2.2.2.a C. <20 mRad Air Gamma Yearly air dose limits

' 40 mRad Air Beta ODCM Control 3.2.2.2.b

d. <10 mrem Total Body (Gamma) 10 CFR 50, Appendix I, Section

<30 mrem Skin (Beta) lI.B.2(b)

2. lodines, Tritium, Particulates with Half Life >8 days:

a. < 1500 mrem/Yr Any Organ ODCM Control 3.2.2.1.b

b. < 15 mrem Any Organ Quarterly dose limits ODCM Control 3.2.2.3.a

c. <30 mrem Any Organ Yearly dose limits ODCM Control 3.2.2.3.b

3. Liquid Effluents

a. Concentration 10 CFR 20, Appendix B, Table II ODCM Control 3.2.1.1 Col. 2 (pre 1994)

b. _<3 mrem Total Body Quarterly dose limits

<10 mrem Any Organ ODCM Control 3.2.1.2.a

c. <6 mrem Total Body Yearly dose limits

' 20 mrem Any Organ ODCM Control 3.2.1.2.b

4. 40CFR 190

< 25 mrem Total Body Yearly dose limits

' 75 mrem Thyroid ODCM Control 3.2.3 Page 1

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC B. Maximum Permissible Concentrations:

Gaseous dose rates rather than effluent concentrations are used to calculate permissible release rates for gaseous releases. The maximum permissible dose rates for gaseous releases are defined in ODCM Controls 3.2.2.2.a and 3.2.2.2.b.

The Maximum Permissible Concentrations (MPC) specified in 10 CFR 20, Appendix B, Table II, Column 2 (pre 1994) for identified nuclides, were used to calculate permissible release rates and concentrations for liquid release per the Limerick Offsite Dose Calculation Manual Control 3.2.1.1. The total activity concentration for all dissolved or entrained gases was limited to

< 2E-0 gCiml.

C. Average Energy (E):

The Limerick ODCM limits the dose equivalent rates due to the release of noble gases to less than or equal to 500 mrem/year to the total body and less than or equal to 3000 mrem/year to the skin. Therefore, the average beta and gamma energies ( E) of the radionuclide mixture in releases of fission and activation gases as described in Regulatory Guide 1.21, "Measuring, Evaluation, and 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 to Limerick.

D. Measurements and Approximations of Total Radioactivity

1. Fission and Activation Gases The method used for Gamma Isotopic Analysis is the Canberra Gamma Spectroscopy System with a gas Marinelli beaker. Airborne effluent gaseous activity was continuously monitored and recorded in accordance with ODCM Table 4.2-2. Additional vent grab samples are taken from the North Stack, Unit 1 South Stack and Unit 2 South Stack and analyzed at least monthly to determine the isotopic mixture of noble gas activity released for the month. The data from the noble gas radiation monitor was analyzed to report net noble gas effluent activity. When no activity was found in the grab isotopic analysis, the isotopic mixture was assumed to be that evaluated in the UFSAR (Section 11.5, Table 11.5-4). If activity was found in the grab isotopic analysis, the isotopic mixture for the Noble Gas Monitor was determined from that isotopic mixture. When no isotopic activity was identified in the grab noble gas samples, the noble gas radiation monitor 15-minute average data for one-hour prior to and one-hour post noble gas grab sampling were used to determine monitor background for the month. The mean plus two standard deviations was used as background for each Noble Gas Monitor. When activity was identified the background determination was made from the last month that no activity was found.

2. Particulates and lodines The method used is the Canberra Gamma Spectroscopy System with a particulate filter (47 mm) or charcoal cartridge, respectively. Particulate and iodine activity was continuously sampled and analyzed in accordance with ODCM Table 4.2-2. Charcoal and particulate samples are taken from the North Stack, Unit 1 South Stack, Unit 2 South Stack and the Hot Maintenance Shop exhausts and analyzed at least weekly to determine the total activity released from the plant based on the highest vent flow rates recorded for the sampling period.

3. Liquid Effluents Each batch of liquid effluent was sampled and analyzed for gamma isotopic activity in accordance with ODCM Table 4.2-1 prior to release. The total activity of each released Page 2

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC batch was determined by multiplying each nuclide's concentration by the total volume discharged and then summing. The total activity released during a month was then determined by summing the activity content of all batch releases discharged during thei month.

4. Tritium in Liquid and Gaseous Effluents:

Tritium in Liquid Effluents is analyzed using a Liquid Scintillation Counter.

Air from stack effluents was passed through two bubblers in series and an aliquot of the water from each bubbler was analyzed using a Liquid Scintillation Counter.

5. Composite Samples and Lower Limit of Detection (LLD)

Particulate air samples were composited quarterly and analyzed for gross alpha, Sr-89 and Sr-90. Liquid radwaste samples were composited monthly and quarterly and analyzed for gross alpha (monthly) and Fe-55, Sr-89 and Sr-90 (quarterly). These composites submitted to an offsite vendor laboratory for analysis. The ODCM required lower limit of detection for airborne and liquid releases are as follows:

Airbome: LLD Gross Alpha 1E-11 uCicc:

Sr-89, Sr-90 IE-11 uCVcc 1-131 1E-12 uCVcc 1-133 1E-10 uCi/cc Principal Gamma Emitters (Mn-54, Fe-59, Co-58, Co-60, Zn-65,1-131, Cs-134, 1E-11 uCVcc Cs-137,Ce-141, Ce-144)

Noble Gas (Kr-87, Kr-88, Xe-133, Xe-133m, 1E-04 uClcc Xe-i 35, Xe-i 35m, XKe-i38) -4 Cc H-3 1E-06 uCVcc Liquid: -

Principal Gamma Emitters (Mn-54, Fe-59, Co-58, Co-60, Zn-65, Cs-i 34, Cs-1 37, Ce-141, 5E-07 uCVml Ce-144) 1-131 1E-06 uCim I Entrained Gases (Kr-87, Kr-88, Xe-133, u Xe-133m, Xe-135, Xe-135m, Xe-138) I uC_

_E-05 ml H-3 1E-05 uCVmI Gross Alpha - E-07 uCVml Sr-89, Sr-90 5E-08 uCi/mI Fe-55 1E-06 uCi/m I

6. Estimated Total Error Present Procedure CY-AA-1 70-21 00, Estimated Errors of Effluent Measurements, provides the methodology to obtain an overall estimate of the error associated with radioactive effm jents.

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SITE: LIMERICK GENERATING STATION -. UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC E. Batch Releases:

1. Liquid Qtr I Qtr 2 Otr 3 Qtr 4 Number of Batch Releases 5.70E+01 1.80E+01 3.80E+01 3.OOE+01 Total time period for batch releases (mi) 4.23E-403 1.17E+03 2.49E+03 2.05E+03 Maximum time period for batch release (min) 9.38E+01 7.47E+01 8.44E+01 7.68E+01 Average time period for batch release (min) 7.42E+01 6.51 E+01 6.57E+01 6.82E+01 Minimum time period for batch release (min) 2.67E+01 5.35E+01 3.69E+01 5.35E+01 Average stream flow (Schuylkill River) during periods of release of effluents into a flowing stream (gpm) 1.42E+06 1.73E+06 3.65E+05 1.76E+06

2. Gaseous Oil Incineration I Qtr I Qtr 2 Qtr 3 Qtr 4 Number of Batch Releases O.OOE+00 O.OOE+OO O.OOE+O0 O.OOE+00 Total time period for batch releases (min) O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Maximum time period for batch release (min) 0.OOE+00 O.OOE+0O O.OOE+00 O.OOE+00 Average time period for batch release (min) 0.00E+00 O.OOE+00 O.OOE+00 O.OOE+00 Minimum time period for batch release (min) O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 Other Batch Releases l Qtr I Qtr 2 Qtr 3 Qtr 4 Number of Batch Releases 3.OOE+00 6.00E+00 O.OOE+00 1.00E+00 Total time period for batch releases (min) 1.04E+04 4.42E+04 O.OOE+00 1.01 E+04 Maximum time period for batch release (min) 8.51 E+03 1.01 E+04 O.OOE+00 1.01 E+04 Average time period for batch release (min) 3.46E+03 7.37E+03 O.OOE+00 1.01 E+04 Minimum time period for batch release (min) 4.00E+02 1.13E+03 O.OOE+00 1.01E+04 F. Abnormal Releases:

1. Liuid Otr 1 Qtr 2 Qtr 3 Qtr 4 Number of Releases O.OOE+00 O.OOE+00 O.OOE+0 O.OOE+00 Total Activity Released (Ci) O.OOE+O O.OOE+OO O.OOE+OC O.OOE+00

2. Gaseous Number of Releases O.OOE+0 10.OOE+000.OOE+OO O.OOE+00 Total Activity Released (Ci) O.OOE+O l0.00E+00t0.00E+0O 0.00E+00 Page 4

SITE: LIMERICK GENERATING STATION - UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC G. Revisions to the ODCM There were no revisions made to the station's ODCM in 2005.

H. Compliance to 40 CFR 190 Limits The radioactive material released during this reporting period and the doses listed in this report were within the limits of the ODCM and 40 CFR 190.

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SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Appendix A

- Effluent and Waste Disposal Summary Page 7

SITE: LIMERICK GENERATING STATION - UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC '!

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SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC LIST OF TABLES PAGE 11 Table 1 Gaseous Effluents - Summation of All Releases 12 Table 2 Gaseous Effluents for Elevated Release Point - North Stack 13 Table 3 Gaseous Effluents for Ground Level Release Points - Unit 1 South Stack 14 Table 4 Gaseous Effluents for Ground Level Release Points - Unit 2 South Stack 15 Table 5 Gaseous Effluents for Ground Level Release Points - Hot Maintenance Shop 16 Table 6 Gaseous Effluents for Ground Level Release Points - Oil Incineration 17 Table 7 Gaseous Effluents for Ground Level Release Points - Other Batch Releases 18 Table 8 Liquid Effluents - Summation of All Releases 19 Table 9 Liquid Effluents Release Points - Liquid Radwaste Page 9

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SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE 1 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES PERIOD 2005 A. FISSION AND ACTIVATION GASSES Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Ersrto l

1. Total Release Ci 1.21 E+01 1.39E+00 4.43E+00 2.09E+01 3.66E 01

2. Average Release Rate for Period uCLsec 1.54E+00 1.76E-01 5.64E-01 2.66E+00

3. Percenl of ODCM Limit  % 5.35E-03 1.48E-03 4.96E-03 2.45E-02

- Gamma Air Dose _ _ _ _ _ _ _ _ _ _ _ _

- Beta Air Dose  % 3.03E-03 4.59E-04 1.53E-03 7.50E-03 B. ICDINES

1. Total 131

2. Average Release Rate for Period Units Ci uCi/sec Qtr 1 5.41E-04 6.88E-05

_ _ _ ______J Qtr 2 0.OOE+00 0.OOE+00 Qtr 3 O.OOE+00 0.OOE+00 Qtr 4 9.09E-07 1.16E-07 j E rr o r %

2.04E+01

3. Percen: of Limit  %

C. PARTICULATES Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Est. a

1. Particulates with T 1/2 > 8 days Ci 8.37E-05 4.25E-05 O.OOE+00 8.95E-06 2.26 1

2. Average Release Rate for Period uCVsec 1.07E-05 5.40E-06 O.OOE+00 1.14E-06

3. Percen: of ODCM Limit */

4. Gross Alpha Ci O.OE+00 0.OOE+00 0.OOE+00 0.00E+00 D. TRITIUM Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Est. Total I_ T lError  %

1ToaRelease Ci 0.00E+00 0.00E+oo o.OOE+00 3.28E+00 1.57 E+0

12. Averag s Release Rate for Period uCi/sec 0.OOE+00 0.00E+00 0 +00 I4.17'E-01

[3. Percent of ODCM Limit I  % IIIII E. Icdine 131 & 133, Tritium & Particulate Units I Qtr 1 1 Qtr 2 1 Qtr 3 I Qtr 4

1. Percent of ODCM Limit I

- Organ Dose  % 5.77E-01 1 1.79E-03 I 0.OOE+00 I 6.03E-03

• ODCM Limit is for combined Iodine, tritium and particulate only, which is shown in Item E.

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SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC -

TABLE 2 GASEOUS EFFLUENTS FOR RELEASE POINT - NORTH STACK PERIOD 2005

1. FISSION AND ACTIVATION GASSES Nuclide Released Continuous Mode Units Qtr 1 tr 2 Qtr 3 Qtr 4 KR-85 Ci 4.41 E-02 3.77E-04 1.82E-02 1.70E-01 KR-85M Ci 1.17E-02 9.97E-05 4.82E-03 4.49E-02 KR-87 Ci 2.04E-02 1.75E-04 8.44E-03 -7.87E-02 KR-88 Ci 3.61 E-02 3.09E-04 1.49E-02 1.39E-01 XE-1 31M Ci 1.1 OE-03 9.44E-06 4.56E-04 4.25E-03 XE-133 Ci 3.03E-02 3.52E-05 1.70E-03 1.58E-02 XE-135 Ci 1.1 8E+00 1.38E-03 6.65E-02 6.20E-01 XE-135M Ci 7.55E-01 8.78E-04 4.24E-02 3.95E-01 XE-1 38 Ci 2.20E-01 1.88E-03 9.09E-02 8.47E-01 AR-41 Ci <LLD <LLD <LLD <LLD Total for Period Ci 2.30E+00 5.14E-03 2.48E-01 2.31 E+00

2. IODINES Nuclide Released Continuous Mode Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 1-131 Ci 4.44E-04 <LLD <LLD <LLD 1-133 Ci 1.49E-04 .<LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD Total for Period Ci 5.92E-04 <LLD <LLD <LLD

3. PARTICULATES (T 1/2 > 8 DAYS)

Nuclide Released Continuous Mode Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 SR-89 Ci <LLD <LLD <LLD <LLD SR-90 Ci <LLD <LLD <LLD cLLD CS-134 Ci <LLD <LLD <LLD <LLD CS-137 Ci <LLD <LLD <LLD <LLD BA-140 Ci dLLD <LLD <LLD <LLD LA-140 Ci <LLD <LLD <LLD <LLD CE-141 Ci <LLD <LLD <LLD <LLD CR-51 Ci <LLD <LLD <LLD <LLD MN-54 Ci <LLD <LLD <LLD <LLD CO-58 Ci <LLD <LLD <LLD <LLD CO-60 Ci <LLD <LLD cLLD <LLD MO-99 Ci <LLD <LLD <LLD <LLD AG-11 OM Ci <LLD <LLD <LLD <LLD CE-144 Ci <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD Page 12

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE-: EXELON GENERATION COMPANY, LLC PERIOD 2)05 TABLE 3 GASEOUS EFFLUENTS FOR RELEASE POINT - UNIT I SOUTH STACK

1. FISSION AND ACTIVATION GASSES Nuclide Released Continuous Mode Units Otr I Qtr 2 Qtr 3 Qtr 4 Ci <LLD <LLD <LLD <LLD KR-85 6.32E-02 KR-85M Ci 2.13E-02 2.11 E-02 6.OOE-02 Ci 2.13E-02 2.11 E-02 6.00E-02 6.32E-02 KR-87 6.32E-02 KR-88 Ci 2.13E-02 2.11 E-02 6.OOE-02 Ci 8.91E+00 4.58E-01 1.30E+00 1.37E+00 XE-133 7.17E-01 XE-135 Ci 2.41E-01 2.40E-01 6.80E-01 Ci 3.27E-01 3.24E-01 9.20E-01 9.70E-01 XE-135M 1.48E-01 Ci 4.97E-02 4.94E-02 1.40E-01 XE-138 2.64E-01 AR-41 Ci 8.88E-02 8.82E-02 2.50E-01 Ci .9.68E+00 1.22E+00 3.47E+00 3.66E+00 Total for Period

2. IODINES Continuous Mode -

Nuclide Released Qtr4 Units Qtr I Qtr 2 Qtr 3 1-131 Ci 9.1 1E-05 <LLD <LLD <LLD Ci <LLD <LLD <LLD <LLD 1-133 <LLD 1-135 Ci <LLD <LLD <LLD Ci 9.11 E-05 <LLD <LLD <LLD Total for Period

3. PARTICULATES (T 1/2 >8 DAYS)

Nuclide Released Continuous Mode Units Qtr 1 Qtr2 Qtr 3 Qtr 4 Ci <LLD <LLD <LLD <LLD SR-89 <LLD Ci <LLD <LLD <LLD SR-90 <LLD Ci <LLD <LLD <LLD CS-134 < LLD Ci <LLD <LLD <LLD CS-1 37 <LLD Ci <LLD <LLD <LLD BA-1 40 <LLD LA-140 Ci <LLD <LLD <LLD Ci <LLD <LLD <LLD <LLD CE-141 <LLD Ci 4.31 E-05 <LLD <LLD CR-51 <LLD Ci <LLD <LLD <LLD MN-54 <LLD CO Ci <LLD <LLD <LLD Ci 3.86E-05 <LLD <LLD <LLD CO-60 <LLD Ci <LLD <LLD <LLD MO-99 <LLD AG-1I iON Ci <LLD <LLD <LLD Ci <LLD <LLD <LLD <LLD CE-144 Ci 8.17E-05 <LLD <LLD <LLD Total for Period Page 13

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE 4 GASEOUS EFFLUENTS FOR RELEASE POINT - UNIT 2 SOUTH STACK PERIOD 2005

1. FISSION AND ACTIVATION GASSES Nuclide Released Continuous Mode Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 KR-85 Ci <LLD <LLD <LLD <LLD KR-85M Ci 1.76E-03 2.74E-03 1.24E-02 2.58E-01 KR-87 Ci 1.76E-03 2.74E-03 1.24E-02 2.58E-01 KR-88 Ci 1.76E-03 2.74E-03 1.24E-02 2.58E-01 XE-1 33 Ci 3.82E-02 5.95E-02 2.68E-01 5.58E+o0 XE-1 35 Ci 2.OOE-02 3.11 E-02 1.40E-01 2.92E+00 XE-135M Ci 2.71 E-02 4.21 E-02 1.90E-01 3.95E+00 XE-1 38 Ci 4.12E-03 6.41 E-03 2.89E-02 6.02E-01 AR-41 Ci 7.36E-03 1.1 5E-02 5.16E-02 1.07E+00 Total for Period Ci 1.02E-01 1.59E-01 7.16E-01 1.49E+01

2. IODINES Nuclide Released Continuous Mode Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 1-131 Ci <LLD <LLD <LLD <LLD 1-133 Ci <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD .<LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD

3. PARTICULATES (T 1/2 > 8 DAYS)

Nuclide Released Continuous Mode Units Qtr 1 Qtr 2 Otr 3 Qtr 4 SR-89 Ci <LLD <LLD <LLD <LLD SR-90 Ci <LLD <LLD <LLD <LLD CS-134 Ci <LLD <LLD <LLD <LLD CS-137 Ci <LLD <LLD <LLD <LLD BA-140 Ci <LLD <LLD <LLD <LLD LA-1 40 Ci <LLD <LLD <LLD <LLD CE-1 41 Ci <LLD <LLD <LLD <LLD CR-51 Ci <LLD <LLD <LLD <LLD MN-54 Ci <LLD <LLD <LLD <LLD C0-58 Ci <LLD <LLD <LLD <LLD CO-60 Ci <LLD <LLD <LLD <LLD MO-99 Ci <LLD <LLD <LLD <LLD AG-1l OM Ci <LLD <LLD <LLD <LLD CE-144 Ci <LLD <LLD <LLD <LLD ND-147 Ci <LLD <LLD <LLD 8.95E-06 Total for Period Ci <LLD <LLD <LLD 8.95E-06 Page 14

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE 5 'ASEOUS EFFLUENTS FOR RELEASE POINT- HOT MAINTENANCE SHOP PERIOD 2005

1. FISSION AND ACTIVATION GASSES NO ANALYSIS PERFORMED FOR ACTIVATION GASSES. PATHWAY DOES NOT EXIST.

2. IODINES Nuclide Re~leased Continuous Mode Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 1-131 Ci <LLD <LLD <LLD 9.09E-07 1-133 Ci <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD 9.09E-07

3. PARTICULATES (T 1/2 > 8 DAYS)

Nuclide Released Continuous Mode Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 SR-89 Ci <LLD <LLD <LLD <LLD SR-90 Ci <LLD <LLD <LLD <LLD CS-i34 Ci <LLD <LLD <LLD <LLD CS-1 37 Ci <LLD <LLD <LLD <LLD BA-140 Ci <LLD <LLD <LLD <LLD LA-140 Ci <LLD <LLD <LLD <LLD CE-141 Ci <LLD <LLD <LLD <LLD CR-51 Ci <LLD <LLD <LLD <LLD MN-54 Ci <LLD <LLD <LLD <LLD CO-58 Ci <LLD <LLD <LLD <LLD CO-60 Ci <LLD <LLD <LLD <LLD MO-99 Ci <LLD <LLD <LLD <LLD AG-1i1 OM Ci <LLD <LLD <LLD <LLD CE-144 Ci <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD Page 15

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE 6 GASEOUS EFFLUENTS FOR RELEASE POINT - OIL INCINERATION PERIOD 2005

1. FISSION AND ACTIVATION GASSES NO ANALYSIS PERFORMED FOR ACTIVATION GASSES. PATHWAY DOES NOT EXIST.

2. IODINES Nuclide Released Batch Release Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 1-131 Ci N/A N/A N/A N/A 1-133 Ci N/A N/A N/A N/A 1-135 Ci N/A N/A N/A N/A Total for Period Ci N/A N/A N/A N/A

3. PARTICULATES (T 1/2 > 8 DAYS)

Nuclide Released Batch Release _

l Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 SR-89 Ci N/A N/A N/A N/A SR-90 Ci N/A N/A N/A N/A CS-134 Ci N/A N/A N/A N/A CS-137 Ci N/A N/A N/A N/A BA-140 Ci N/A N/A N/A N/A LA-140 Ci N/A N/A N/A N/A CR-51 Ci N/A N/A N/A N/A MN-54 Ci N/A N/A N/A N/A CO-58 Ci N/A N/A N/A N/A CO-60 Ci N/A N/A N/A N/A MO-99 Ci N/A N/A N/A N/A AG-i1 OM Ci N/A N/A N/A N/A CE-141 Ci N/A N/A N/A N/A CE-144 Ci N/A N/A N/A N/A FE-55 Ci N/A N/A N/A N/A Total for Period Ci N/A N/A N/A N/A Page 16

SITE: LIMERICK GENERATING STATION - UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE 7 GASEOUS EFFLUENTS FOR RELEASE POINT - OTHER BATCH RELEASES PERIOD 2005

1. FISSION AND ACTIVATION GASSES Nuclide Released Batch Release Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 KR-85 Ci <LLD <LLD <LLD <LLD KR-85M Ci <LLD <LLD <LLD <LLD KR-87 Ci <LLD <LLD. <LLD <LLD KR-88 Ci <LLD <LLD <LLD <LLD XE-1 33 Ci <LLD <LLD <LLD <LLD XE-1 35 Ci <LLD <LLD <LLD <LLD XE-i35M Ci <LLD <LLD <LLD <LLD Ci <LLD <LLD <LLD <LLD _

XE-138 AR-41 Ci <LLD <LLD <LLD <LLD Total for Period Ci <LLD <LLD <LLD <LLD

2. IODINES Nuclide Released Batch Release

_ Units Otr1 Qtr2 Qtr3 Qtr 4 1-131 Ci 6.44E-06 <LLD <LLD <LLD 1-133 Ci <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD Total for Period Ci 6.44E-06 <LLD <LLD <LLD

3. PARTICULATES (T 1/2 > 8 DAYS)

Nuclide Released Batch Release Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 SR-89 Ci <LLD <LLD <LLD <LLD SR-90 Ci <LLD <LLD <LLD <LLD TE-129M Ci <LLD <LLD <LLD <LLD CS-134 Ci <LLD <LLD <LLD <LLD CS-1 37 Ci <LLD <LLD <LLD <LLD BA-140 Ci <LLD <LLD <LLD <LLD LA-140 Ci <LLD <LLD <LLD <LLD CR-51 Ci <LLD 1.14E-05 <LLD <LLD MN-54 Ci <LLD 8.28E-06 <LLD 8.75E-i 1 CO-58 Ci <LLD 2.43E-06 <LLD <LLD CO-60 Ci 8.34E-07 1.90E-05 <LLD 1.97E-1 0 MO-99 Ci <LLD <LLD <LLD <LLD AG-11 OM Ci <LLD <LLD <LLD <LLD CE-141 Ci <LLD <LLD <LLD <LLD CE-144 Ci <LLD <LLD <LLD <LLD Ci <LLD 1.40E-06 <LLD <LLD ZN-65 ZR-95 Ci 5.42E-07 <LLD <LLD <LLD NB-95 Ci 6.31 E-07 <LLD <LLD <LLD ND-147 Ci <LLD <LLD <LLD 4.96E-i 1 Total for Period Ci 2.01 E-06 4.25E-05 <LLD 3.34E-1 0 Page 17

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC' TABLE 8 LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES PERIOD 2005 A. FISSION AND ACTIVATION PRODUCTS Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Err.Total

1. Total release (not including tritium, Ci 1.27E-03 2.55E-04 3.55E-03 2.49E-04 2.1 1E+01

2. Average diluted concentration during uC~ml 1.22E-08 1.01 E-08 6.30E-08 5.29E-09 batch discharge for the perioduC I12E0 . E8 63E08 59E9

3. % of ODCM Limit - Whole Body Dose*  % 1.46E-02 3.60E-03 2.73E-02 5.17E-03

- Organ Dose* 4.40E-03 1.40E-03 8.27E-03 1.56E-03 B. TRITIUM Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 LEst.

ErrorTotal

1. Total Release Ci 1.46E+01 2.69E+00 6.48E+00 5.95E+00 6.43E+00 2.Average diluted concentration during uCi/mI 1.40E-04 1.06E-04 1.1 5E-04 1.27E-04 batch discharge for the period_ _ _ _ _ _ _ _ _ _ _____

3% of ODCM Limit - MPC  % 4.67E+00 3.53E+00 3.83E+00 4.23E+00 C. DISSOLVED AND ENTRAINED GASSES Units Units _

Qtr 1_ _

Qtr 2 Qtr 3

_ ___-E Qtr 4 rrorTotal 1.Total release Ci 9.19E-04 3_61_E_07J.35E-04 I2.37E-04 p.11 E+01

2. Average diluted concentration during 5.05E-09 batch discharqe for the Deriod uCiml 8.84E-09 I 1.43E-1 1 4.17E-09

3. %of ODCM Limit - MPC j  % I 4.42E-03 l 7.15E-06 J 2.09E-03 2.53E-03 D. GROSS ALPHA RADIOACTIVITY

• Percent of limit includes tritium.

Page 18

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE.: EXELON GENERATION COMPANY, LLC TABLE 9 LIQUID EFFLUENTS FOR RELEASE POINT - LIQUID RADWASTE PERIOD 2D05 Nuclide Released Batch Release Units Otr 1 Qtr 2 Qtr 3 Otr 4 SR-89 Ci <LLD <LLD <LLD <LLD SR-90 Ci <LLD <LLD <LLD <LLD CS-134 Ci <LLD <LLD <LLD <LLD CS-137 Ci 1.13E-05 1.99E-05 3.51 E-06 1.98E-05 1-131 Ci 1.34E-06 <LLD <LLD 2.02E-06 CO-58 Ci 7.20E-05 5.19E-07 <LLD <LLD CO-60 Ci 4.01 E-04 1.46E-04 1.66E-04 1.51 E-04 FE-59 Ci 2.80E-05 <LLD <LLD <LLD ZN-65 Ci 1.37E-05 1.84E-06 <LLD <LLD MN-54 Ci 3.06E-04 7.41 E-05 5.66E-05 4.91 E-05 CR-51 Ci 4.17E-04 <LLD <LLD <LLD ZR-95 Ci <LLD <LLD <LLD <LLD NB-95 Ci <LLD <LLD <LLD <LLD MO-99 Ci <LLD <LLD <LLD <LLD TC-99M Ci <LLD <LLD <LLD <LLD BA-1 40 Ci <LLD <LLD <LLD <LLD LA-140 Ci <LLD <LLD <LLD <LLD CE-141 Ci <LLD <LLD 9.13E-07 <LLD AG-1 1OM Ci 1.02E-05 <LLD <LLD 2.49E-06 FE-55 Ci <LLD <LLD 3.31 E-03 <LLD SB-125 Ci 2.62E-06 1.13E-05 1.19E-05 2.07E-05 SB-124 Ci 3.35E-06 1.22E-06 6.33E-07 <LLD TE-131 Ci 7.72E-07 <LLD <LLD <LLD TE-132 Ci dLD <LLD 4.49E-07 <LLD BR-84 Ci <LLD <LLD <LLD 1.08E-06 1-133 Ci <LLD <LLD <LLD 6.45E-07 ND-147 Ci 3.17E-06 <LLD <LLD 3.05E-06 R-95 Ci <LLD 7.63E-07 <LLD <LLD Total for Period Ci 1.27E-03 2.56E-04 3.55E-03 2.50E-04 XE-133 Ci 7.28E-04 <LLD 5.51E-05 1.77E-04 X(E-1 35 Ci 1.90E-04 <LLD 2.36E-05 5.53E-05 KR-85 Ci <LLD <LLD 1.34E-04 <LLD R-85M Ci 7.06E-07 <LLD <LLD <LLD KR-87 Ci <LLD <LLD 7.78E-07 6.24E-07 E-131 M Ci <LLD <LLD 1.95E-05 <LLD E-133M Ci <LLD <LLD <LLD 3.14E-06 E-135M Ci <LLD 3.61 E-07 <LLD <LLD 2E-137 Ci <LLD <LLD <LLD <LLD 2E-138 Ci <LLD <LLD 2.35E-06 7.81 E-07

,otal for Period Ci 9.19E-04 3.61 E-07 2.35E-04 2.37E-04 Page 19

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC - .

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Page 20

SITE: LIMERICK GENERATING STATION - UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Appendix B Solid Waste and Irradiated Fuel Shipments Page 21

SITE: LIMERICK GENERATING STATION - UNiTS .1& 2 LICENSEE: EXELON GENERATION COMPANY, LLC (Page Intentionally Left Blank)

Page 22

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC A. Solid vaste shipped offste for burial or disposal (not irradiated fuel) 1/1/05- 12/31/05

1. Type cif Waste Tye of waste Unit 2005 Estimated Error 01/1 r3sin, filters sludges, evaporator bottoms, etc

a. Spent m1 8.36E+01 25%

Ci 4.23E+02 TD nipressible waste, contaminated equipment, etc.l m 1.16E+02 l 25%

lCi l1.88E+00 Irdiatd components, control rods, etc. m3 5.47E+00 25%

Ci 5.67E+04 Omescribe) mu None N/A ICil None

2. Estimate of Major Nuclide Composition (By Waste Type)

Category A - Spent Resin, Filters, Sludges, Evaporator Bottoms, etc.

Waste Class Waste Class Waste Class A Percent B Percent C Percent Isotope Curies

• Abundance Curies Abundance Curies

• Abundance Fe-59 0.00E+00 0.00% 1.44E+01 5.03% 0.OOE+00 0.00%

Mn-54 3.21 E+01 24.93% 9.22E+01 32.21% 2.17E+00 25.260/c Fe-55 1.81 E+01 14.05% 3.15E+01 11.00% 1.90E-01 2.21%

Co-60 5.50E+01 42.71% 8.13E+01 28.40% 4.51 E+00 52.50%

Ni-63 7.73E+00 6.00% 6.17E+00 2.16% 3.49E-01 4.06%

n-65 7.67E+00 5.96% 1.55E+01 5.42% 6.49E-01 7.56%

Cs-1 37 3.67E+00 2.85% 7.59E+00 2.65% 5.05E-01 5.88%

Ce-144 3.38E-01 0.26% 1.17E+00 0.41% 8.84E-02 1.03%

Co-58 2.76E+00 2.15% 6.20E+00 2.17% 1.29E-01 1.50%

Cr-51 8.08E-01 0.63% 2.67E+01 9.33% 0.OOE+00 0.00%

Cs-1 34 5.98E-01 0.46% 3.49E+00 1.22% 0.OOE+00 0.00%

TOTALS 1.29E+02 100.00% 2.86E+02 100.00% 8.59E+00 100.00%

Page 23

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Category B - Dry Compressible Waste, Contaminated Equipment, etc.

Waste Class A Waste Class B Curies Percent Curies Percent Isotope (estimated) Abundance (estimated) Abundance Cr-51 1.84E-01 9.95% 7.59E-02 12.82%

Mn-54 3.82E-01 20.65% 1.94E-01 32.78%

Fe-55 3.30E-01 17.84% 9.13E-02 15.42%

Co-58 3.19E-02 1.72% 1.79E-02 3.03%

Co-60 7.81 E-01 42.22% 1.38E-01 23.32%

Fe-59 2.50E-02 1.35% 4.16E-02 7.03%

Zn-65 1.16E-01 6.27% 3.31 E-02 5.60%

TOTALS 1.85E+00 100.00% 5.92E-01 100.00%

Category C- Irradiated Components, Control Rods, etc.

Waste Class B Waste Class C Curies Percent Curies Percent Isotope (estimated) Abundance (estimated) Abundance Co-60 1.98E+01 51.12% 3.13E+04 55.16%

Fe-55 1.67E+01 43.11% 2.25E+04 39.66%

Ni-63 1.92E+00 4.93% 2.11 E+03 3.72%

Mn-54 3.08E-01 0.79% 6.34E+02 1.12%

Cr-51 2.70E-04 0.00% 1.04E+02 0.18%

Co-58 2.54E-03 0.01% 5.74E+01 0.10%

Ni-59 9.98E-03 0.02% 1.1OE+01 0.02%

Fe-59 1.07E-04 0.00% 8.11 E+00 0.01%

H-3 3.11 E-03 0.01% 4.33E+00 0.01%

Zn-65 5.55E-05 0.00% 3.96E+00 0.01%

C-14 2.74E-03 0.01% 2.99E+00 0.01%

TOTALS 3.87E+01 100.00% 5.67E+04 100.00%

Page 24

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC

3. Solid Waste (Disposition)

Number of Shipments Mode of Transportation Destination 6 Truck tudsvik (THOR) to Barnwell 6 Truck tudsvik (THOR) to Envirocare 21 Truck uratek to Envirocare 11 Rail laron to Envirocare 8 Truck ACE LLC. to Envirocare 8 Truck imerick Generating Station to Envirocare 5 Truck imerick Generating Station to Barnwell Comments:

11 Shipments were made from Limerick to Duratek for processing 7 Shipments were made from Limerick to Alaron for processing 5 Shipments were made from Limerick to Studsvik (THOR) for processing No solidifications were performed Category A - 24 shipments Type A LSA Category A - 4 shipments > Type A LSA Category A - 2 shipments Type B Category 13 - 32 shipments Type A LSA Category B - 1 shipment Type B Category C - 4 shipments Type B Category 1)- No shipments made B. Irradiated Fuel Shipments (disposition)

Fl-umbrof Shipments l Mode of Transportation Destination 4 Truck Barnwell C. Changes to the Process Control Program RevisiDn 3 of RW-AA-100, the Process Control Program was issued on April 26, 2005. The significant changes made were enhancements and clarification for radwaste goals and preparation/distribution of the REidwaste Monthly Report.

Page 25

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2.

LICENSEE: EXELON GENERATION COMPANY, LLC (Page Intentionally Left Blank)

Page 26

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE-: EXELON GENERATION COMPANY, LLC Appendix C Dose Calculations Page 27

SITE: LIMERICK GENERATING STATION -UNITS .1-& 2 LICENSEE: EXELON GENERATION COMPANY, LLC (Page Intentionally Left Blank)

Page 28

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Per ODCIV, Control 6.2, the Annual Radioactive Effluent Release Report shall include an assessment of the radiation doses to the hypothetically highest exposed MEMBER OF THE PUBLIC from reactor releases and other near)y uranium fuel cycle sources. For purposes of this calculation the following assumptions were made:

Gaseous

• Annual average meteorology and actual gaseous effluent releases were used.

• Beta air dose attributed to noble gas releases.

• The sector with the highest x1Q, x/Q depleted and D/Q was the SE sector at Site Boundary 762 meters.

• All significant pathways were assumed to be present

• Occupancy factor was considered 100%.

Liquid

• Average river flow rate for the year (2.824E+03 cfs) was used.

A summary of gaseous and liquid radiation doses to members of the public at these locations was as follows:

Effluent Applicable Estimated Age Location  % of Limit Unit Organ Dose Group Distance Direction Applicable

__ ___ (meters) (toward) Limit Noble Gas Gamma - Air Dose 3.63E-03 All 762 SE 1.82E-02 20 mRad Noble Gas Beta - Air Dose 2.51 E-03 All 762 SE 6.28E-03 40 mRad Noble Gas Total Body (Gamma) 2.39E-03 All 762 SE 2.39E-02 10 mrem Noble Gas Skin (Beta) 4.55E-03 All 762 SE 1.52E-02 30 mrem Iodine, Particulate & Thyroid 8.73E-02 Infant 762 SE 2.91 E-01 30 mrem Tritium_ __

Liquid Total Body 1.05E-03 Child Phila. Sub. Water 1.75E-02 6 rrem Liquid Liver 1.06E-03 Child Phila. Sub. Water 5.30E-03 20 rnrem Doses calculated were well below all ODCM and 40 CFR Part 190 limits.

ODCM Control 6.2 also requires that the Annual Effluent Release Report shall include an assessment of the radiation dzses from radioactive liquid and gaseous effluents to members of the public due to activities inside the Site Bcoundary during the report period. ODCM Controls state that MEMBER OF THE PUBLIC shall include all persons not occupationally associated with the plant. This category does not include employees of the utility or contractors. Also excluded from this category are persons who enter the site to service equipment or to make deliveries. This category does include persons who use portions of the site for recreational, occupational education, or other purposes not associated with the plant. Areas within the site boundary, where radiation dose of this type! could occur include the Limerick Information Center on Longview Road near the rear exit of the plant, Frick's Lock on the west shore of the Schuylkill River and the railroad tracks that runs along the east shore of the Rive r. The dose to State Police and National Guard personnel around the location of the Security Checkpoint was also included in this report. The radiation doses to Members of the Public have been estimated using methodology stated in the ODCM. The maximum gaseous dose to members of the public at these locations is based on the following assumptions:

• AnnuEI average meteorology and actual effluent releases were used.

• Beta air dose attributed to noble gas releases.

• Dose is from ground plane and inhalation only. No ingestion dose.

• Adult age group was used for the State Police and National Guard Dose.

Page 29

SITE: LIMERICK GENERATING STATION - UNITS 1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC

• The x/Q, xIQ depleted and D/Q for the highest exposed sector for the railroad tracks (W), and the sectors enclosing Security Checkpoint, Frick's Lock and the Information Center available for occupancy were used.

• The maximum expected occupancy factor is 25% of a working year in all locations.

• Distance to the railroad tracks, which pass through the Site Boundary in the W sector, is approximately 225 meters.

• Distance to the Limerick Information Center is approximately 884 meters in the ESE sector.

• Distance to Frick's Lock is approximately 450 meters in the WSW sector.

• Distance to Security Checkpoint is approximately 682 meters in the NNE sector.

A summary of gaseous radiation doses to members of the public at these locations is as follows:

Approx. GAMMA Beta Air lodine/Part/H3 Distance AIR Dose, Organ Dose, DOSE ,

Location Sector (meters) MRAD(b 1 MRAD(2) MREM(3)

Frick's Lock WSW 450 3.86E-04 2.67E-04 1.05E-04 Info. Center ESE 884 5.09E-03 3.52E-03 1.45E-04 R.R. Tracks W 225 1.43E-03 9.88E-03 3.50E-04 National GuardI Security NNE 682 2.24E-04 1.55E-04 6.51 E-05 Check Point I _ __ __ I_ __ _ _ I__ __ _ I__

Notes:

(1) The limit for Gamma Air Dose = 20 mRad/Yr (ref. ODCM 3.2.2.2.b)

(2) The limit for Beta Air Dose = 40 mRad/Yr (ref. ODCM 3.2.2.2.b)

(3) The limit for lodine/Particulate/H-3 Organ Dose = 30 mrem/Yr (ref. ODCM 3.2.2.3.b)

Page 30

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Appendix D Meteorological Data Page 31

SITE: LIMERICK GENERATING STATION - UNITS. 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC (Page Intentionally Left Blank)

Page 32

SITE: LIMERICK GENERATING STATION -UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Extremely Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

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

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 0 0 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 33

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Moderately Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet 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 o o 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

WSW 1 0 0 0 0 1 0

W 0 o 0 0 0 0 0

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 1 0 0 0 0 1 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stabiility measurements in all stability classes: 0 Page 34

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Slightly Unstable - 266Ft-26F t Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 NNE 0 1 NE 0 0 ENE 0 0 E 0 0 ESE 0 0 SE 0 1 SSE 0 0 S 0 0 SSW 0 1 SW 0 1 WSW 0 4 W 0 2 WNW 0 14 NW 0 4 NNW 0 0 Variable 0 0 Total 0 7 12 9 0 0 28 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 35

SITE: LIMERICK GENERATING STATION - UNITS 1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Neutral - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 15 53 7 0 0 75 NNE 14 28 2 0 0 44 NE 19 50 7 0 0 76 ENE 24 68 23 3 0 118 E 16 35 22 0 0 73 ESE 6 7 14 1 0 28 SE 2 8 0 0 0 10 SSE 0 9 1 0 0 10 S 4 18 1 0 0 23 SSW 4 9 2 2 0 17 SW 8 15 2 0 0 25 WSW 4 15 7 0 0 26 W 14 46 39 3 0 102 WNW 17 60 83 41 1 202 NW 11 62 119 105 15 313 NNW 15 59 46 12 0 132 Variable 0 0 0 0 0 0 Total 173 542 375 167 16 1 1274 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 36

SITE: LIMERICK GENERATING STATICN - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Slightly Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 . > 24 Total N 7 15 0 22 NNE 12 9 0 21 NE 19 9 2 30 ENE 24 16 0 40 E 15 15 4 34 ESE 6 4 3 13 SE 4 4 1 9 SSE 2 9 9 20 S 8 7 8 27 SSW 9 7 3 19 SW 14 1 0 15 WSW 10 8 0 18 W 26 33 3 62 WNW 23 74 9 107 NW 15 24 12 55 NNW 11 13 3 27 Variable 0 0 0 0 Total 205 248 57 8 1 0 519 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 37

SITE: LIMERICK GENERATING STATION -- UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Moderately Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 0 0 0 0 0 6 NNE 5 0 0 0 0 0 5 NE 6 0 6 0 0 0 0 ENE 8 0 8 0 0 0 0 E 6 1 7 0 0 0 .0 ESE 4 0 4 1 0 0 .0 SE 1 1 3 0 0 0 0 SSE 0 0 0 0 0 0 0 S 1 0 1 0 0 0 0 SSW 4 3 7 0 0 0 0 SW 1 1 2 o 0 0 0 WSW 12 2 14 o 0 0 0 W 17 6 23 0 0 0 0 WNW 11 8 19 0 0 0 0 NW 10 4 14 NNW 7 0 1 0 0 0 8 Variable 0 0 0 0 0 0 0 Total 99 26 2 0 0 0 127 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 38

SITE: LIMERICK GENERATING STATION - UNITS i &2 LICENSEE:: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Extremely Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind DirectiorL 1-3 4-7 8-12 13-18 19-24 > 24 Total N 5 5 NNE 3 3 NE 5 5 ENE 3 3 E 2 2 ESE 0 0 SE 0 0 SSE 0 0 S 1 1 SSW 0 0 SW 3 3 Wsw 3 3 W 19 20 wNW 34 34 NW 18 18 NNW 17 17 Variable 0 0 Total 113 1 0 0 0 0 114 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 39

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Extremely Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

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

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 0 0 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 40

SITE: LIMERICK GENERATING STATION - UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Moderately Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

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

0 NNE 0

NE 0

ENE 0

E 0

ESE 0

SE 0

SSE 0

S 0

0o SSW 0

SW 0

WSW 0

W 0

WNW 0

NW 0

NNW 0

Variable 0

Total 0 1 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 41

SITE: LIMERICK GENERATING STATION - UNITS 1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC.

Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Slightly Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 DNNE 1 NE 0 ENE 0 E 0 ESE 0 SE 1 SSE 0 S 0 SSW 1 SW 4 WSW 3 W 14 WNW 3 NW 1 NNW 0 Variable 0 Total 0 2 7 11 7 1 28 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 42

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Neutral - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 11 33 49 3 0 0 96 NNE 3 24 21 0 0 0 48 NE 10 51 24 3 0 0 88 ENE 7 41 49 5 1 0 103 E 9 22 36 9 0 0 76 ESE 4 6 6 11 0 0 27 SE 2 2 6 0 0 0 10 SSE 0 7 7 0 0 0 14 S 2 5 19 0 1 0 27 SSW 2 4 7 1 2 0 16 SW 2 12 9 3 4 0 30 WSw 2 9 24 10 3 0 48 W 8 21 45 51 16 7 148 WNW 8 28 56 93 66 12 263 NW 1 21 66 52 24 8 172 NNW 9 22 54 33 5 0 123 Variable 0 0 0 0 0 0 0 Total 80 308 478 274 122 27 1289 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 10 Hours of missing stability measurements in all stability classes: 0 Page 43

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Slightly Stable - 266Ft-26FII Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 17__ 2---- ----- 0---- 28___

N 9 17 2 0 0 28 NNE 13 7 4 0 0 28 NE 17 7 1 0 0 33 ENE 13 10 1 0 0 29 E 14 21 1 0 0 37 ESE 5 2 4 0 0 13 SE 5 3 1 0 0 12 SSE 5 10 10 0 0 27 S 6 10 8 2 2 29 SSW 8 6 6 0 0 20 SW 10 3 0 0 0 14 WSW 12 8 2 0 0 23 W 14 40 10 0 0 70 WNW 30 65 11 1 0 111 NW 13 22 6 4 0 48 NNW 8 9 1 0 0 20 Variable 0 0 0 0 0 0 Total 43 182 240 68 7 2 542 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 44

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Moderately Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 1 0 7 NNE 2 0 0 5 NE 2 1 0 10 ENE 1 0 0 2 E 3 3 0 6 ESE 4 0 0 7 SE 3 1 0 5 SSE 1 2 1 5 S 0 1 0 4 SSW 1 0 0 6 SW 3 2 0 5 WSW 5 1 0 12 W 1 7 1 13 WNW 4 24 2 39 NW 2 1 0 8 NNW 2 0 .0 5 Variable 0 0 0 0 Total 35 56 44 4 0 0 139 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 4 Hours of missing stability measurements in all stability classes: 0 Page 45

SITE: LIMERICK GENERATING STATION - UNITS 1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: January - March 2005 Stability Class - Extremely Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 11 0 15 NNE 4 0 5 NE 1 0 2 ENE 1 0 1 E 0 0 2 ESE 0 0 1 SE 2 0 4 SSE 0 0 1 S 3 0 3 SSW 2 0 6 SW 3 0 6 WSW 5 0 6 W 11 0 14 WNW 25 0 32 NW 13 0 22 NNW 10 0 13 Variable 0 0 0 Total 32 91 10 0 0 0 133 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 46

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Extremely Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 NNE 2 2 NE 0 0 ENE 0 0 E 0 0 ESE 0 0 SE 0 0 SSE 0 0 S 6 6 SSW 12 16 SW 9 9 wSw 6 8 W 6 12 WNW 0 0 NW 0 0 NNW 0 0 Variable 0 0 Total 1 41 11 0 0 0 53 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 47

SITE: LIMERICK GENERATING STATION - UNITS 1-& 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Moderately Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 NNE 0 NE I ENE 6 E 4 ESE 4 SE 0 SSE 2 S 4 SSW 8 SW 12 WSW 7 W 9 WNW 3 NW 2 BOW 5 Variable 0 Total 3 38 22 5 1 0 69 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 48

• SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE:: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Petiod of Record: April - June 2005 Stability Class - Slightly Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 1 0 0 3 0 3 6 0 0 0 9 NE 0 3 1 0 0 0 4 ENE 0 3 3 0 0 0 6 E 0 7 3 0 0 0 10 ESE 0 1 0 0 0 0 1 SE 0 1 0 0 0 0 1 SSE 0 0 0 0 0 0 0 S 0 3 5 0 0 0 8 SSW 3 10 7 0 0 0 20 SW 0 6 1 1 0 0 8 WSW 2 4 1 0 0 0 7 W 0 9 2 0 0 0 11 0 12 11 1 0 0 24 NW 0 6 12 0 0 0 18 0 7 7 0 1 0 15 Variable 0 0 0 0 0 0 0 Total 5 75 61 3 1 0 145 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 49

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Neutral . - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 23 18 5 0 54 NNE 7 19 13 0 0 39 NE 15 23 19 1 0 58 ENE 8 54 18 1 0 81 E 5 36 22 2 0 65 ESE 3 9 7 0 0 19 SE 3 11 2 3 0 19 SSE 5 25 8 3 0 41 S 7 33 18 0 0 58 SSW 14 50 15 0 0 79 SW 11 18 2 1 .0 32 WSW 9 22 12 2 .0 45 W 7 33 24 5 0 69 WNW 16 46 42 14 0 118 NW 8 44 45 8 0 105 NNW 3 20 25 6 0 57 Variable 0 0 0 0 0 0 Total 127 466 290 51 5 0 939 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 50

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC '

Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Slightly Stable - 266Ft-26F,t Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 10 9 24 NNE 12 18 30 NE 13 8 21 ENE 12 9 23 E 9 17 36 ESE 6 9 19 SE 7 12 27 SSE 6 19 30 S 12 33 50 SSW 31 27 59 SW 37 9 46 WSW 32 10 42 W 35 18 S6 WNW 36 32 75 NW 22 19 48 NNW 10 10 29 Variable 0 0 0 Total 290 259 57 9 0 0 615 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 51

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Moderately Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 3 NNE 2 6 NE 3 3 ENE 4 4 E 6 6 ESE 1 4 SE 1 5 SSE 0 1 S 4 4 SSW 3 3 SW 9 10 WSW 20 20 W 33 34 WNW 45 48 NW 25 30 13 16 Variable 0 0 Total 172 22 3 0 0 0 197 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 52

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Extremely Stable - 266Ft-26Ft' Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

. Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 0 0 3 NNE 3 0 0 3 NE 1 0 0 1 ENE 5 0 0 5 E 1 0 0 1 ESE 2 0 0 2 SE 0 0 0 0 SSE 1 0 0 1 S 0 0 0 0 SSW 0 0 0 0 SW 0 0 0 0 WSW 5 0 0 5 W 16 0 0 16 WNW 16 4 0 20 NW 13 5 0 19 NNW 6 1 0 7 Variable 0 0 0 0 Total 72 10 1 0 0 0 83 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 53

SITE: LIMERICK GENERATING STATION -- UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Extremely Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 NNE 2 0 2 NE 0 0 0 ENE 0 0 0 E 0 0 0 ESE 0 0 0 SE 0 0 0 SSE 0 0 0 S 6 0 7 SSW 15 0 20 SW 5 0 7 WSW 6 1 15 W 1 0 2 WNW 0 0 0 NW 0 0 0 NNW 0 0 0 Variable 0 0 0 Total 0 5 35 12 1 0 53 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: 2 Page 54

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE:: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class- Moderately Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 NNE 1 1 NE 0 0 ENE 0 7 E 0 2 ESE 1 5 SE 0 0 SSE 0 2 S 2 6 SSW 1 7 SW 4 15 wSW 1 10 W 0 5 WNW 0 0 NW 2 3 NNW 0 4 Variable 0 0 Total 0 12 35 17 5 0 69 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: 2 Page 55

SITE: LIMERICK GENERATING STATION - UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Slightly Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 2 4 NNE 5 2 9 NE 2 0 5 ENE 4 1 6 E 4 0 7 ESE 1 0 2 SE 1 0 1 SSE 1 0 1 S 11 1 15 SSW 6 6 15 SW 3 4 8 WSW 5 3 11 W 7 11 23 WNW 7 4 16 NW 4 2 10 NNW 6 3 12 Variable 0 0 0 Total 2 33 68 39 3 0 145 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: 2 Page 56

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Neutral - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 19 21 11 4 56 NNE 16 19 5 0 42 NE 22 28 10 0 64 ENE 34 36 9 0 81 E 20 21 12 0 54 ESE 8 5 4 0 18 SE 8 7 2 3 22 SSE 15 21 6 2 47 S 21 33 9 0 67 SSW 18 36 16 4 79 SW 11 8 15 3 40 wsW 13 16 10 8 50 W 20 45 32 17 117 WNW 28 45 24 4 105 NW 16 18 8 1 44 NNW 12 18 18 4 53 Variable 0 0 0 0 0 Total 38 281 377 191 50 2 939 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: 2 Page 57

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC . .

Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Slightly Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8 13-18 19-24 > 24 Total N 3 11 13 29 NNE 2 7 20 29 NE 2 8 11 21 ENE 4 7 7 20 E 5 15 14 42 ESE 5 11 7 26 SE 3 4 14 29 SSE 2 11 22 39 S 2 20 37 62 SSW 4 36 22 65 SW 5 25 15 48 WSW 11 14 22 49 W 5 11 30 51 WiNW 3 19 33 64 NW 4 18 14 40 NNW 1 14 8 30 Variable 0 0 0 0 Total 61 231 289 58 5 0 644 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: 2 Page 58

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record:.April - June 2005 Stability Class - Moderately Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 2 9 NNE 1 2 4 NE 1 0 3 ENE 4 0 5 E 0 1 2 ESE 3 2 6 SE 3 1 5 SSE 3 2 5 S 8 1 9 SSW 1 3 5 SW 6 3 12 WSW 14 5 20 W 29 14 44 WNW 25 38 64 NW 12 5 18 NNW 7 2 10 Variable 0 0 0 Total 16 123 81 1 0 0 221 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 6 Hours of missing stability measurements in all stability classes: 2 Page 59

SITE: LIMERICK GENERATING STATION--UNITS -1& 2:

LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: April - June 2005 Stability Class - Extremely Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 6 2 8 NNE 0 1 1 NE 1 0 3 ENE 1 0 1 E 1 0 2 ESE 3 0 5 SE 2 0 3 SSE 2 0 4 S 2 0 4 SSW 2 0 4 SW 1 0 1 WSW 0 0 1 W 8 1 11 WNW 10 18 29 NW 10 1 15 NNW 3 1 5 Variable 0 0 0 Total 16 52 24 5 0 0 97 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 3 Hours of missing stability measurements in all stability classes: 2 Page 60

SITE: LIMERICK GENERATING STATION - UNITS 1& 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Extremely Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 1 NNE 0 0 NE 0 0 ENE 0 0 E 2 3 ESE 1 1 SE 1 1 SSE 2 2 S 2 3 SSW 8 10 SW 9 10 wSw 9 9 W 6 6 WNW 1 1 NW 0 0 NNW 0 0 Variable 0 0 Total 2 41 4 0 0 0 47 Hours of calm in this stability class: 0 Hours of missing wind measurements in tlLiS stability class: 0 Hour:S of missing stab: ility measurements in all stability classes: 0 Page 61

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Moderately Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

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

N 2 3 NNE 1 2 NE 0 1 ENE 4 4 E 5 6 ESE 1 2 SE 1 2 SSE 1 1 S 1 2 SSW 5 7 SW 10 12 WSW 6 8 W 11 13 NWi 5 6 NW 2 4 NNW 2 5 Variable 0 0 Total 8 57 13 0 0 0 78 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 62

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Slightly Unstable - 266Ft-26Ft Delta-T (F)

-Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 0 14 NNE 3 0 6 NE 1 0 3 ENE 3 0 4 E 3 0 5 ESE 2 0 4 SE 4 0 5 SSE 2 0 4 S 3 0 5 SSW 6 0 10 SW 6 .0 10 WSW 9 0 12 W 13 0 15 WNW 15 0 20 NW 7 0 12 NNW 5 0 13 Variable 0 0 0 Total 23 86 32 1 0 0 142 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 63

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC .

Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Neutral - 266]Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 16 24 12 52 NNE 22 15 4 41 NE 19 14 2 35 ENE 15 21 2 38 E 24 33 6 63 ESE 10 32 5 47 SE 7 32 2 41 SSE 18 7 3 28 S 8 25 9 42 SSW 14 18 15 47 SW 15 20 1 36 wSW 15 18 0 33 W 17 17 2 36 WNW 19 36 6 61 NW 16 64 51 137 NNW 10 15 24 51 Variable 0 0 0 0 Total

• 245 391 144 8 0 0 788 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 64

SITE: LIMERICK GENERATING STATION - UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Slightly Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 17 8 26 NNE 24 7 34 NE 21 6 27 ENE 32 3 35 E 28 20 49 ESE 20 7 27 SE 10 7 17 SSE 16 12 29 S 16 42 62 SSW 27 25 54 SW 39 6 45 WSW 34 2 36 W 45 11 56 WNW 44 20 64 NW 37 35 76 NNW 17 10 30 Variable 0 0 0 Total 427 221 18 1 0 0 667 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 65

SITE: LIMERICK GENERATING STATION - UNITS.1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Moderately Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 13 0 13 0 0 0 0 NNE 4 4 8 0 0 0 0 NE 4 3 7 0 0 0 0 ENE 6 0 6 0 0 0 0 E 6 0 6 0 0 0 0 ESE 5 1 6 0 0 0 0 SE 3 0 3 0 0 0 0 SSE 2 1 3 0 0 0 0 S 2 0 2 0 0 0 0 SSW 10 1 11 0 0 0 0 SW 15 0 15 0 0 0 0 WSW 21 0 21 W 27 0 0 1 0 0 28 WiNW 51 6 0 0 0 0 57 NW 36 2 0 0 0 0 38 INNW 13 0 0 0 0 0 13 Variable 0 0 0 0 0 0 0 Total 218 18 0 1 0 0 237 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 66

SITE: LIMERICK GENERATING STATION - UNITS 1 8 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - SeptembEer 2005 Stability Class - Extremely Stable - 266;Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 9 0 0 9 NNE 5 0 0 5 NE 7 0 0 7 ENE 3 1 0 4 E 0 0 0 0 ESE 0 0 0 0 SE 0 0 0 0 SSE 0 0 0 0 S 0 0 0 0 SSW 1 0 0 1 SW 1 0 0 1 WSW 10 0 0 10 W 26 0 0 26 WNW 31 0 0 31 NW 30 0 0 30 NNW 10 0 0 10 Variable 0 0 0 0 Total 133 1 0 0 0 0 134 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 67

SITE: LIMERICK GENERATING STATION -- UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC *"- \ t Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Extremely Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 NNE 0 NE 0 ENE 0 E 3 ESE 1 SE 1 SSE 3 S 7 SSW 8 SW 13 WSW 8 W 2 WNW 0 NW 0 NNW 0 Variable 0 Total 0 10 35 2 0 0 47 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: 1 Page 68

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Moderately Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 5 NNE 2 NE 2 ENE 2 E 5 ESE 2 SE 2 SSE 1 S 4 SSW 9 SW 12 WSW 9 W 14 WNW 2 NW 6 NNW 1 Variable 0 Total 3 32 35 8 0 0 78 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: 1 Page 69

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Slightly Unstable - 26' 6Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 8 4 0 0 0 12 UNE 0 2 0 0 0 3 NE 4 0 0 0 0 4 ENE 1 2 0 0 0 3 E 0 4 0 0 0 4 ESE 1 3 0 0 0 4 SE 2 2 1 0 0 5 SSE 1 1 0 0 0 2 S 4 5 1 0 0 11 SSW 6 2 1 0 0 9 SW 6 6 1 0 0 16 WSW 7 6 2 0 0 15 W 11 4 0 1 0 16 WNW 1 9 3 0 0 13 NW 2 5 0 0 0 8 riaw 1 12 4 0 0 17 Variable o o 0 0 0 0 Total 6 55 67 13 1 0 142 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: 1 Page 70

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC ,

Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Neutral - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 19 15 17 3 54 NNE 16 13 9 2 40 NE 8 29 6 0 43 ENE 7 22 6 0 35 E 7 19 27 1 54 ESE 4 12 26 6 48 SE 3 12 17 5 37 SSE 4 16 8 4 32 S 7 19 18 4 53 SSW 7 21 10 9 49 SW 4 20 10 1 36 WSW 9 7 15 3 34 W 6 21 24 5 56 WNW 5 39 36 15 99 NW 6 14 39 13 73 NNW 5 9 17 1 32 Variable 0 0 0 0 0 Total 117 288 285 72 13 0 775 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 21 Hours of missing stability measurements in all stability classes: 1 Page 71

SITE: LIMERICK GENERATING STATION,- UNITS 1& 2 -.

LICENSEE: EXELON GENERATION COMPANY, LLC .

Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Slightly Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 8 8 6 0 0 0 22 NNE 13 15 5 0 0 0 33 NE 16 14 3 0 0 0 33 ENE 16 15 2 0 0 0 33 E 14 15 14 1 0 0 44 ESE 8 11 7 0 0 0 26 SE 3 10 3 1 0 0 17 SSE 1 14 17 3 0 0 39 S 2 14 47 6 1 0 70 SSW 2 39 24 4 0 0 69 SW 6 18 11 0 0 0 35 WSW 5 15 14 2 0 0 36 W 5 31 21 1 0 0 58 WNW 8 39 24 2 0 0 73 NW 12 14 14 2 0 0 42 NNW 12 12 9 1 0 0 34 Variable 0 0 0 0 0 0 0 Total 135 284 221 23 1 0 664 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 24 Hours of missing stability measurements in all stability classes:

Page 72

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Moderately Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 10 7 0 0 0 20 NNE 3 4 2 1 0 0 10 NE 4 1 0 0 0 0 5 ENE 2 6 0 0 0 0 8 E 0 1 1 0 0 0 2 ESE 2 2 3 0 0 0 7 SE 1 0 0 0 0 0 1 SSE 4 1 0 0 0 0 5 S 1 5 4 0 0 0 10 SSW 1 6 9 0 0 0 16 SW 2 8 3 0 0 0 13 WsW 5 11 2 0 0 0 18 W 5 26 9 0 0 0 40 WNW 5 54 21 1 0 0 81 NW 7 12 2 0 0 0 21 NNW 4 14 1 0 0 0 19 Variable 0 0 0 0 0 0 0 Total 49 161 64 2 0 0 276 Hour.; of calm in this stability class: 0 Hours of missing wind measurements in this stability class: I Hour~s of missing stability measurements in all stability classes: 1 Page 73

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: July - September 2005 Stability Class - Extremely Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 2____

N 2 5 2 9 NNE 2 2 0 4 NE 2 1 0 3 ENE 2 2 1 5 E 2 0 0 2 ESE 2 0 0 2 SE 0 0 0 0 SSE 0 2 0 2 S 2 2 0 4 SSW 0 3 1 4 SW 2 0 1 3 WSW 3 5 0 8 W 4 30 9 43 WNW 9 35 19 63 NW 2 8 1 11 NNW 2 7 0 9 Variable 0 0 0 0 Total 36 102 34 0 0 0 172 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: 1 Page 74

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Extremely Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

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

N 0 0 NNE 0 0 NE 0 0 ENE 0 0 E 0 0 ESE 0 0 SE 0 0 SSE 0 0 S 0 0 SSW 0 0 SW 0 1 WsW 0 0 W 0 0 WNW 0 0 NW 0 0 NNW 0 0 Variable 0 0 Total 0 1 0 1 Hours of calm in this stability class:

Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 75

SITE: LIMERICK GENERATING STATION -- UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC  ;

Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Moderately Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

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

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 0 7 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

SITE: LIMERICK GENERATING STATION - UNITS 1& 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Slightly Unstable - 266 Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

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

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 2 8 6 0 0 0 16 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

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Neutral - 266:Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind DirectionL 1-3 4-7 8-12 13-18 19-24 > 24 Total N 15 42 11 0 0 68 NNE 13 25 7 0 0 45 NE 15 34 2 0 0 51 ENE 12 36 9 0 0 57 E 8 20 7 0 0 35 ESE 8 17 4 0 0 29 SE 6 7 2 0 0 15 SSE 4 8 5 5 0 22 S 3 11 18 5 0 37 SSW 2 15 4 2 0 23 SW 5 10 6 0 0 21 WSW 1 18 1 1 0 21 W 7 27 32 15 0 81 WNW 8 37 98 18 0 161 NW 8 58 104 125 14 310 9 26 22 0 0 57 Variable 0 0 0 0 0 0 Total 124 391 332 171 14 1 1033 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 78

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Slightly Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 12 5 1 18 NNE 14 15 0 29 NE 9 15 0 24 ENE 16 11 2 29 E 14 6 4 25 ESE 8 6 11 25 SE 9 8 9 29 SSE 15 11 5 35 S 12 21 4 38 SSW 5 38 5 48 SW 23 13 1 37 WSW 29 17 0 46 W 20 52 2 74 WNW 45 67 24 138 NW 22 40 32 101 NNW 17 8 1 26 Variable 0 0 0 0 Total 270 333 101 17 1 0 722 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

SITE: LIMERICK GENERATING STATION - UNITS 1 &.2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Moderately Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7 7 NNE 2 2 NE 3 4 ENE 4 6 E 10 11 ESE 11 13 SE 3 5 SSE 2 3 S 3 3 SSW 10 13 SW 10 12 WSW 12 12 W 24 28 WNW 22 25 NW 17 20 NNW 5 6 Variable 0 0 Total 145 23 2 0 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: 0 Page 80

SITE: LIMERICK GENERATING STATION'- UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Extremely Stable - 266 Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 8 8 NNE S 5 NE 4 4 ENE 6 6 E 2 2 ESE 0 0 SE 2 2 SSE 0 0 S 0 0 SSW 0 0 SW 3 3 WSW 3 3 W 16 17 WNW 12 12 NW 12 12 NNW 10 10 Variable 0 0 Total 83 1 0 0 0 0 84 HourE of calm in this stability class: 0 HourE of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 81

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Extremely Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

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

0 NNE 0

NE 0

ENE 0

E 0

ESE 0

SE 0

SSE 0

S 0

0 SSW 0

SW 0

WSW 0

W 0

WNW 0

NW 0

NNW 0

Variable 0

Total 1 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: 2 Page 82

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Moderately Unstable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 NNE 0 0 NE 0 0 ENE 0 0 E 0 0 ESE 0 0 SE 0 0 SSE 0 0 S 0 0 SSW 1 0

SW 0 0

wsW 0 0

W 0 00o WNW 0 0

NW 0 0

NNW 0 0

Variable 0 0

Total 1 0 7 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: 2 Page 83

SITE: LIMERICK GENERATING STATIO1N - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Slightly Unstable -- 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

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

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW variable Total 1 3 8 4 0 0 16 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: 2 Page 84

SITE: LIMERICK GENERATING STATION - UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Neutral - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 30 25 10 0 0 72 NNE 25 17 4 0 0 53 NE 20 15 4 0 0 45 ENE 24 23 1 0 0 52 E 13 13 0 0 0 30 ESE 1 11 3 0 0 22 SE 10 5 2 0 0 19 SSE 6 6 8 1 4 29 S 8 10 17 3 0 39 SSW 4 8 5 4 1 25 SW 6 9 1 3 0 20 WSW 4 18 7 0 0 34 W 10 32 59 17 7 129 WNW 18 71 121 59 13 284 NW 12 34 38 25 5 120 NNW 11 36 11 0 0 63 Variable 0 0 0 0 0 0 Total 64 206 333 291 112 30 1036 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 4 Hours of missing stability measurements in all stability classes: 2 Page 85

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC -

Limerick Nuclear Station Period of Record: October - Decemiber2005 Stability Class - Slightly Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 5 5 10 1 21 NNE 4 9 15 0 28 NE 4 16 6 1 27 ENE 4 11 5 0 20 E 8 5 8 5 26 ESE 8 9 5 4 26 SE 7 7 5 16 36 SSE 5 14 15 4 44 S 0 14 25 4 44 SSW 2 19 30 7 59 SW 4 14 17 1 37 WSW 2 10 18 4 34 W 3 22 50 23 99 WNW 3 36 73 38 157 NW 4 21 22 6 53 NNW 5 9 13 0 27 Variable 0 0 0 0 0 Total 68 221 317 114 15 3 738 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 9 Hours of missing stability measurements in all stability classes: 2 Page 86

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Moderately Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 0 8 NNE 2 0 3 NE 8 0 13 ENE 4 1 9 E 2 0 9 ESE 1 0 6 SE 3 0 5 SSE 6 1 11 S 9 3 15 SSW 1 1 4 SW 10 5 18 WSW 14 7 23 W 10 7 22 WNW 19 15 38 NW 6 8 21 NNW 4 0 8 Variable 0 0 0 Total 57 102 48 6 0 0 213 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 14 Hours of missing stability measurements in all stability classes: 2.

Page 87

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station Period of Record: October - December2005 Stability Class - Extremely Stable - 266Ft-26Ft Delta-T (F)

Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 0 1 0 0 NJNE 4 1 3 8 0 0 NE 0 2 0 2 0 0 ENE 2 2 0 4 0 0 E 3 2 2 7 0 0 ESE 3 4 0 7 0 0 SE 2 4 0 6 0 0 SSE 0 5 1 6

_ 0 0 S 4 3 0 0 7 0 0 SSW 5 4 2 11 0 0 SW 3 6 4 13 0 0 WSW 5 6 1 12 0 0 W 12 11 2 25 0 0 WNW 11 13 4 29 0 0 NW 3 3 0 6 0 0 NNW 5 1 0 6 0 0 Variable 0 0 0 0 Total 63 67 19 0 0 1 150 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 16 Hours of missing stability measurements in all stability classes: 2 Page 88

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station January-March, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

Number of Observations = 2063 Values are Percent Occurrence SPEED ---------------------------------- WIND DIRECTION CLASSES ----------- --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 L Ss 0.00 0.00 0.00 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 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 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

- N 0.73 0.68 0.92 1.16 0.78 0.29 0.10 0.00 0.19 0.19 0.39 0.19 0.68 0.82 0.53 0.73 8.39 8.39 3 SS 0.34 0.58 0.92 1.16 0.73 0.29 0.19 0.10 0.39 0.44 0.68 0.48 1.26 1.11 0.73 0.53 9.94 9.94 MS 0.29 0.24 0.29 0.39 0.29 0.19 0.05 0.00 0.05 0.19 0.05 0.58 0.82 0.53 0.48 0.34 4.80 4.80 ES 0.24 0.15 0.24 0.15 0.10 0.00 0.00 0.00 0.05 0.00 0.15 0.15 0.92 1.65 0.87 0.82 5.48 5.48 28.60 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 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 0.05 0.05 4 SU 0.00 0.05 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.05 0.10 0.10 0.00 0.00 0.00 0.34 0.34

- N 2.57 1.36 2.42 3.30 1.70 0.34 0.39 0.44 0.87 0.44 0.73 0.73 2.23 2.91 3.01 2.86 26.27 26.27 7 SS 0.73 0.44 0.44 0.78 0.73 0.19 0.19 0.44 0.34 0.34 0.05 0.39 1.60 3.59 1.16 0.63 12.02 12.02 MS 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.00 0.00 0.15 0.05 0.10 0.29 0.39 0.19 0.00 1.26 1.26 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 0.05 0.00 0.00 0.00 0.05 0.05 39.99 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 8 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.10 0.00 0.34 0.10 0.00 0.58 0.58

- N 0.34 0.10 0.34 1.11 1.07 0.68 0.00 0.05 0.05 0.10 0.10 0.34 1.89 4.02 5.77 2.23 18.18 18.18 1 SS 0.00 0.00 0.10 0.00 0.19 0.15 0.05 0.44 0.39 0.15 0.00 0.00 0.15 0.44 0.58 0.15 2.76 2.76 2 MS 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 0.05 0.10 0.10 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 21.62 EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.34 0.10 0.00 0.44 0.44

- N 0.00 0.00 0.00 0.15 0.00 0.05 0.00 0.00 0.00 0.10 0.00 0.00 0.15 1.99 5.09 0.58 8.10 8.10 1 Ss 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.15 0.00 0.00 0.00 0.00 0.05 0.19 0.00 0.39 0.39 8 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ES V V.u _. _c_ _ .__ 0 .00 n.on n.oe O.nn 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 S.S2 Page 89

SITE: LIMERICK GENERATING STATION - UNITS 1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station January-March, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

SPEED ---------------------------------- WIND DIRECTION CLASSES ------------------------------- --------- STABILITY CLASSES ---------- ----

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 9 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

- N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.73 0.00 0.78 0.78 2 SS 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 0.05 0.05 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.82 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 G MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU Q.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 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 0.05 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 .0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.05 TOT 5.24 3.59 5.67 8.19 5.62 2.18 1.11 1.45 2.52 2.13 2.23 3.20 10.13 18.23 19.58 8.92 100.00 0.00 0.05 1.36 61.75 25.16 6.16 5.53 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Extremely Unstable 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 0.05 Moderately Unstable 0.00 0.05 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.05 0.05 0.19 0.10 0.68 0.19 0.00 1.36 Slightly Unstable 3.64 2.13 3.68 5.72 3.54 1.36 0.48 0.48 1.11 0.82 1.21 1.26 4.94 9.79 15.17 6.40 61.75 Neutral 1.07 1.02 1.45 1.94 1.65 0.63 0.44 0.97 1.31 0.92 0.73 0.87 3.01 5.19 2.67 1.31 25.16 Slightly Stable 0.29 0.24 0.29 0.39 0.34 0.19 0.15 0.00 0.05 0.34 0.10 0.68 1.11 0.92 0.68 0.39 6.16 Moderately stable 0.24 0.15 0.24 0.15 0.10 0.00 0.00 0.00 0.05 0.00 0.15 0.15 0.97 1.65 0.87 0.82 5.53 Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C A L M 1.60 1.65 2.38 2.86 1.89 0.78 0.34 0.10 0.68 0.82 1.26 1.41 3.68 4.12 2.62 2.42 28.60 < 3.5 mph 3.30 1.84 2.86 4.07 2.47 0.53 0.68 0.87 1.21 0.92 0.87 1.36 4.27 6.88 4.36 3.49 39.99 3.6 - 7.5 mph 0.34 0.10 0.44 1.11 1.26 0.82 0.10 0.48 0.44 0.29 0.10 0.44 2.04 4.80 6.45 2.42 21.62 7.6 - 12.5 mph 0.00 0.00 0.00 0.15 0.00 0.05 0.00 0.00 0.15 0.10 0.00 0.00 0.1s 2.38 5.38 0.58 8.92 12.6 - 18.5 mph 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 0.05 0.73 0.00 0.82 18.6 - 24.5 mph 0.00 0.00 0.00 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 > 24.5 mph Page 90

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station January-March, 2005 175 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

Number of Observations - 2132 Values are Percent Occurrence SPEED -________________________________ WIND DIRECTION CLASSES ----------------------------------

CLASS --------- STABILITY CLASSES ----------

N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 L SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 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 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

- N 0.52 0.14 0.47 0.33 0.42 0.19 0.09 0.00 0.09 0.09 0.09 0.09 0.38 0.38 0.05 0.42 3.75 3 SS 3.75 0.00 0.19 0.38 0.23 0.05 0.09 0.14 0.09 0.05 0.00 0.05 0.05 0.28 0.19 0.14 0.09 2.02 MS 2.02 0.05 0.09 0.09 0.05 0.14 0.19 0.14 0.05 0.00 0.05 0.14 0.23 0.05 0.19 0.09 0.09 1.64 ES 1.64 0.19 0.00 0.05 0.00 0.05 0.05 0.09 0.05 0.00 0.19 0.14 0.00 0.14 0.09 0.33 0.14 1.50 1.50 8.91 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 SU 0.00 0.05 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 0.09 0.09

- N 1.55 1.13 2.39 1.92 1.03 0.28 0.09 0.33 0.23 0.19 0.56 0.42 0.98 1.31 0.98 1.03 14.45 14.45 7 SS 0.42 0.61 0.80 0.61 0.66 0.23 0.23 0.23 0.28 0.38 0.47 0.56 0.66 1.41 0.61 0.38 8.54 8.54 MS 0.23 0.14 0.33 0.05 0.00 0.14 0.05 0.05 0.14 0.23 0.00 0.28 0.19 0.42 0.23 0.14 2.63 2.63 ES 0.52 0.19 0.05 0.05 0.00 0.00 0.09 0.00 0.14 0.09 0.14 0.23 0.52 1.17 0.61 0.47 4.27 4.27 29.97 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 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 0.05 0.05 8 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.09 0.09 0.00 0.00 0.00 0.33 0.33

- N 2.30 0.98 1.13 2.30 1.69 0.28 0.28 0.33 0.89 0.33 0.42 1.13 2.11 2.63 3.10 2.53 22.42 22.42 1 Ss 0.80 0.33 0.33 0.47 0.98 0.09 0.14 0.47 0.47 0.28 0.14 0.38 1.88 3.05 1.03 0.42 11.26 11.26 2 MS 0.05 0.00 0.05 0.00 0.14 0.00 0.05 0.09 0.05 0.00 0.09 0.05 0.33 1.13 0.05 0.00 2.06 2.06 ES 0.00 0.05 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.23 0.09 0.00 0.47 0.47 36.59 EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3 SU 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 0.14 0.05 0.00 0.52 0.52

- N 0.14 0.00 0.14 0.23 0.42 0.52 0.00 0.00 0.00 0.05 0.14 0.47 2.39 4.36 2.44 1.55 12.85 12.85 1 Ss 0.09 0.19 0.05 0.05 0.05 0.19 0.05 0.47 0.38 0.28 0.00 0.09 0.47 0.52 0.28 0.05 3.19 3.19 8 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.05 0.09 0.00 0.00 0.19 0.19 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 16.74 Page 91

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station January-March, 2005 175 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

SPEED ---------------------------------- WIND DIRECTION CLASSES --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 9 SU 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 0.33 0.33

- N 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.05 0.09 0.19 0.14 0.75 3.10 1.13 0.23 5.72 5.72 2 SS 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 0.05 0.19 0.00 0.33 0.33 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 6.38 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 G MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU 0.00 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 0.05 0.05 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.33 0.56 0.38 0.00 1.27 1.27 2 SS 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 0.09 0.09 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 1.41 TOT 6.85 4.08 6.24 6.33 5.68 2.25 1.50 2.20 2.95 2.30 2.81 4.32 12.15 21.01 11.77 7.55 100.00 0.00 0.05 1.31 60.46 25.42 6.52 6.24 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE 55E S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Extremely Unstable 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 0.05 Moderately Unstable 0.00 0.05 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.05 0.19 0.14 0.66 0.14 0.05 0.00 1.31 Slightly Unstable 4.50 2.25 4.13 4.83 3.56 1.27 0.47 0.66 1.27 0.75 1.41 2.25 6.94 12.34 8.07 5.77 60.46 Neutral 1.31 1.31 1.55 1.36 1.74 0.61 0.56 1.27 1.36 0.94 0.66 1.08 3.28 5.21 2.25 0.94 25.42 Slightly Stable 0.33 0.23 0.47 0.09 0.28 0.33 0.23 0.23 0.19 0.28 0.23 0.56 0.61 1.83 0.38 0.23 6.52 Moderately Stable 0.70 0.23 0.09 0.05 0.09 0.05 0.19 0.05 0.14 0.28 0.28 0.28 0.66 1.50 1.03 0.61 6.24 Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C A L M 0.75 0.42 0.98 0.61 0.66 0.52 0.47 0.19 0.14 0.33 0.42 0.38 0.84 0.84 0.61 0.75 8.91 < 3.5 mph 2.72 2.11 3.56 2.63 1.69 0.66 0.52 0.61 0.80 0.89 1.17 1.50 2.35 4.32 2.44 2.02 29.97 3.6 - 7.5 mph 3.14 1.36 1.50 2.77 2.86 0.38 0.47 0.89 1.41 0.61 0.84 1.69 4.41 7.04 4.27 2.95 36.59 7.6 - 12.5 mph 0.23 0.19 0.19 0.28 0.47 0.70 0.05 0.52 0.38 0.33 0.19 0.61 3.14 5.11 2.77 1.59 16.74 12.6 - 18.5 mph 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.14 0.14 0.19 0.14 1.03 3.14 1.31 0.23 6.38 18.6 - 24.5 mph 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.00 0.00 0.00 0.38 0.56 0.38 0.00 1.41 > 24.5 mph Page 92

SITE: LIMERICK GENERATING STATION - UNITS 1& 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station April-June, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F) number of observations =2101 Values are Percent Occurrence SPEED ------------------ WIND DIRECTION CLASSES ------

CLASS N NNE NE ENE E MS SE SSE S SSW SW WSW

~~~~---

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

W WNW NW NNW TOTAL EU mu Su N Ss M4S ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C Su 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 L SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 H Ms 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 EU 0.00 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. 05 0.05 mu 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.05 0.00 0.00 0.00 0.00 0.14 0.14 1 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.00 0.10 0.00 0.00 0.00 0.00 0.24 0.24

- N 0.29 0.33 0.71 0.38 0.24 0.14 0.14 0.24 0.33 0.67 0.52 0.43 0.33 0.76 0.38 0.14 6.04 6.04 3 SS 0.48 0.57 0.62 0.57 0.43 0.29 0.33 0.29 0.57 1.48 1.76 1.52 1.67 1.71 1.05 0.48 13.00 13.80 Ms 0.14 0.10 0.14 0.19 0.29 0.05 0.05 0.00 0.19 0.14 0.43 0.95 1.57 2.14 1.19 0.62 8.19 8.19 ES 0. 14 0.14 0.05 0.24 0. 05 0.10 0.00 0.05 0.00 0.00 0.00 0.24 0.76 0.76 0.62 0.29 3.43 3.43 31.899 EU 0.00 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.29 0.57 0.43 0.29 0.29 0.00 0.00 0.00 1.95 1.95 mu 0.00 0.00 0.05 0.10 0.10 0.10 0.00 0.05 0.05s 0.29 0.43 0.14 0.29 0.05 0.10 0.10 1.891 1.81l 4 SU 0.00 0.14 0.14 0.14 0.33 0.05 0.05 0.00 0.14 0.48 0.29 0.19 0.43 0.57 0.29 0.33 3 .51 3 .57

- N 1.09 0.90 1.09 2.57 1.71 0.43 0.52 1.19 1.57 2.38 0.86 1.05 1.57 2.19 2.09 0.95 22.18 22.18 7SS5 0.43 0.86 0.38 0.43 0.81 0.43 0.57 0.90 1.57 1.29 0.43 0.48 0.86 1.52 0.90 0.48 12.33 12.33 MS 0.00 0.14 0.00 0.00 0.00 0.14 0.19 0. 05 0.00 0.00 0.05 0.00 0.05 0.10 0.19 0.14 1.05 1.05 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 0.19 0.24 0. 05 0.48 0.48 43.36 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.19 0.00 0.10 0.24 0.00 .0.00 0.00 0.52 0.52 mu 0.05 0.00 0.00 0.19 0.10 0.10 0.00 0.05 0.05 0.10 0.05 0.14 0.14 0.10 0.00 0.00 1.05 1.05 8 Su 0.10 0.29 0.05 0.14 0. 14 0.00 0.00 0.00 0.24 0.33 0.05 0.05 0.10 0.52 0.57 0.33 2.90 2.90 N 0.86 0.62 0.90 0.86 1.05 0.33 0.10 0.38 0.86 0.71 0.10 0.57 1.14 2.00 2.14 1.19 13.80 13.80 1 Ss 0.24 0.00 0.00 0.10 0.38 0.19 0.24 0.19 0.24 0.05 0.00* 0.00 0.14 0.29 0.33 0.33 2.71 2 Ms 0.00 2.71 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0 0.00 0.05 0.05 0.00 0.14 ES 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 0.05 0.00 0.05 0.05 21.18 EU 0.00 0.00 0.00 0.00 0.00 0.00 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 mu 0.05 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 0.10 0.24 0.24 3 SU 0.05 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. 05 0.00 0. 00 0.14 0.14

- N 0.24 0.00 0.05 0.05 0.10 0.00 0.14 0.14 0.00 0.00 0.05 0.10 0.24 0.67 0.38 0.29 2.43 2.43 1 Ss 0.00 0.00 0.00 0.00 0.10 0.00 0.14 0.05 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.10 0.43 0.43 8 Ms 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 3.24 Page 93

SITE: . LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station April-June, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

SPEED ---------------------------------- WIND DIRECTION CLASSES ----------------------- -----_- --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 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 0.05 9 SU 0.00 0.00 0.00 0.00 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 0.05

- N 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 0.00 0.14 0.24 0.24 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.33 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 G MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 TOT 4.24 4.24 4.19 5.95 5.91 2.33 2.48 3.57 6.19 8.81 5.57 6.38 9.85 13.71 10.57 6.14 100.00 2.52 3.29 6.90 44.69 29.27 9.38 3.95 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES-0.00 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.29 0.76 0.43 0.38 0.57 0.00 0.00 0.00 2.52 Extremely Unstable 0.10 0.00 0.05 0.29 0.19 0.19 0.00 0.10 0.19 0.39 0.57 0.33 0.43 0.14 0.10 0.24 3.28 Moderately Unstable 0.14 0.43 0.19 0.29 0.48 0.05 0.05 0.00 0.38 0.95 0.38 0.33 0.52 1.14 0.86 0.71 6.90 Slightly Unstable 2.57 1.86 2.76 3.86 3.09 0.90 0.90 1.95 2.76 3.76 1.52 2.14 3.28 5.62 5.00 2.71 44.69 Neutral 1.14 1.43 1.00 1.09 1.71 0.90 1.29 1.43 2.38 2.81 2.19 2.00 2.67 3.57 2.28 1.38 29.27 Slightly Stable 0.14 0.29 0.14 0.19 0.29 0.19 0.24 0.05 0.19 0.14 0.48 0.95 1.62 2.28 1.43 0.76 9.38 Moderately Stable 0.14 0.14 0.05 0.24 0.05 0.10 0.00 0.05 0.00 0.00 0.00 0.24 0.76 0.95 0.90 0.33 3.95 Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C A L M 1.05 1.14 1.52 1.38 1.00 0.57 0.52 0.57 1.14 2.43 2.76 3.28 4.38 5.38 3.24 1.52 31.89 < 3.5 mph 1.52 2.14 1.67 3.24 2.95 1.14 1.33 2.19 3.62 5.00 2.48 2.14 3.47 4.62 3.81 2.05 43.36 3.6 - 7.5 mph 1.24 0.95 0.95 1.29 1.67 0.62 0.33 0.62 1.38 1.38 0.19 0.86 1.76 2.95 3.14 1.86 21.18 7.6 - 12.5 mph 0.33 0.00 0.05 0.05 0.19 0.00 0.29 0.19 0.05 0.00 0.14 0.10 0.24 0.76 0.38 0.48 3.24 12.6 - 18.5 mph 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 0.00 0.24 0.33 18.6 - 24.5 mph 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 > 24.5 mph Page 94

SITE: LIMERICK GENERATING STATION - UNITS 1& 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station April-June, 2005 175 ft. Wind Speed and Direction 266Ft-26Pt Delta-T (F)

Number of Observations = 2168 Values are Percent Occurrence SPEED *----WINDDIRECTION CLASSES CLASS N NNE NE ENE E ESE SE 55E STABILITY CLASSES------ ------

5 SSW SW WSW W WNW NW NNW TOTAL EU mu Su N Ss Hs ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C Su 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 L SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M 0.00 0.00 0.00 0.00 Ms 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 mu 0.00 0.00 0.00 0.00 0.00 0.00 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 Su 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 0.05 0.00 0.09 0.09

- N 0.05 0.09 0. 18 0.09 0.05 0.05 0.09 0.14 0.18s 0.18 0.14 0.14 0.09 0.18s 0. 05 0.05 1.75 1.75 3 SS 0.14 0.09 0.09 0.18s 0.23 0.23 0.14 0.09 0.09 0.18 0.23 0.51 0.23 0.14 0.18 0.05 2.81 2.81 Ms 0.05 0.05 0.09 0.05 0.05 0.05 0.05 0.00 0.00 0.05 0.14 0.05 0.05 0. 05 0.00 0.05 0.74 ES 0.00 0.00 0.09 0.00 0.05 0.74 0.09 0.05 0.09 0.09 0.09 0.00 0. 05 0. 05 0.00 0.09 0.00 0.74 0.74 6.13 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.05 0.09 0.00 0.00 0.00 0.00 0.23 0.23 mu 0.00 0.05 0.00 0.00 0.00 0. 05 0.00 0.00 0.09 0.05 0.18s 0.05 0.00 0.00 0.09 0.00 0.55 4 SU 0.55 0.05 0.09 0.14 0.05 0.14 0.05 0.00 0.00 0.14 0.14 0.00 0.09 0.18 0.23 0.14 0.09 1.52 1.52

- N 0.88 0.74 1.01 1.57 0.92 0.37 0.37 0.69 0.97 0.83 0.51 0.60 0.92 1.29 0.74 0.55 12.96 7 Ss 12.96 0.51 0.32 0 .37 0.32 0.69 0.51 0.18 0.51 0.92 1.66 1.15 0.65 0.51 0.88 0.83 0.65 10.65 10.65 Ms 0.28 0.05 0.05 0.18 0.00 0.14 0.14 0.14 0.37 0.05 0.28 0.65 1.34 1.15 0.55 0.32 5.67 5.67 ES 0.28 0.00 0.05 0.05 0.05 0.14 0.09 0.09 0.09 0.09 0.05 0.00 0.37 0.46 0.46 0.14 2.40 2.40 33.99 EU 0.00 0.09 0.00 0.00 0.00 0.00 0.00 0. 00 0.28. 0.69 0.23 0.28 0.05 0.00 0.00 0.00 1.61 1.61 mu 0.05 0.00 0.00 0.23 0.09 0.18 0.00 0.05 0.14. 0.23 0.28 0. 18 0.09 0.00 0.05 0.05 1.61 1.61 8Su0 0.05 0.23 0.09 0.18 0.18 0.05 0.05 0.05 0.51 0.28 0.14 0.23 0.32 0.32 0.18 0.28 3.14 3.14

- N 0.97 0.88 1.29 1.66 0.97 0.23 0.32 0.91 1.52 1.66 0.37 0.74 2.08 2.08 0.83 0.83 17.39 17.*39 1ISs 0.60 0.92 0.51 0.32 0.65 0.32 0.65 1.01 1.71 1.01 0.69 1.01 1.38 1.52 0.65 0.37 13.33 13.33 2 MS 0.09 0.09 0.00 0.00 0.05 0.09 0.05 0.09 0.05 0.14 0.14 0.23 0.65 1.75 0.23 0.09 3.74 3.74 ES 0.09 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.83 0. 05 0.05 1.11 1.11 41.93 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.18 0. 05 0.28 0.05 0.00 0.00 0.00 0.55 0.55 1 MU 0.00 0.00 0.00 0.09 0.00 0.00 0.00 0.05 0.05 0.05 0.18 0.14 0.14 0.00 0.00 0.09 0.78 0.78 3SEU 0.09 0.09 0.00 0.05 0.00 0.00 0.00 0.00 0.05 0.28 0.18s 0.14 0. 51 0.18 0.09 0.14 1.890 1.80o

- N 0.51 0.23 0.46 0.42 0.55 0.18 0.09 0.28 0.42 0.74 0.69 0.46 1.48 1. 11 0.37 0.83 8.81 8.81 1ISs 0.09 0.00 0.00 0.09 0.37 0.14 0. 18 0.18 0.14 0.14 0.14 0.09 0.18 0.42 0.18 0.32 2.68 2.68 8 MS 0.00 0.00 0.00 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 0.05 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 0.05 0.05 0.09 0.05 0.23 0.23 14.90 Page 95

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station April-June, 2005 175 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

SPEED ------ _-_______ - ----------- WIND DIRECTION CLASSES ------------------------------- --------- STABILITY CLASSES ---------- ----

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 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 0.05 0.05 1 MU 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.09 0.00 0.00 0.00 0.05 0.23 0.23 9 SU 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 0.00 0.00 0.05 0.14 0.14

- N 0.18 0.00 0.00 0.00 0.00 0.00 0.14 0.09 0.00 0.18 0.14 0.37 0.78 0.18 0.05 0.18 2.31 2.31 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.18 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.23 4 MS 0.00 0.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 2.95 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 G MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.05 0.00 0.00 0.00 0.09 0.09 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.09 TOT 4.98 4.06 4.43 5.54 5.03 2.86 2.77 4.52 7.84 8.99 6.04 7.20 11.67 12.82 6.00 5.26 100.00 2.44 3.18 6.69 43.31 29.70 10.19 4.47 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES-0.00 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.32 0.92 0.32 0.69 0.09 0.00 0.00 0.00 2.44 Extremely Unstable 0.09 0.05 0.00 0.32 0.09 0.23 0.00 0.09 0.28 0.32 0.69 0.46 0.23 0.00 0.14 0.18 3.18 Moderately Unstable 0.18 0.42 0.23 0.28 0.32 0.09 0.05 0.05 0.69 0.69 0.37 0.51 1.06 0.74 0.46 0.55 6.69 Slightly Unstable 2.58 1.94 2.95 3.74 2.49 0.83 1.01 2.17 3.09 3.64 1.85 2.31 5.40 4.84 2.03 2.44 43.31 Neutral 1.34 1.34 0.97 0.92 1.94 1.20 1.34 1.80 2.86 3.00 2.21 2.26 2.35 2.95 1.85 1.38 29.70 Slightly Stable 0.42 0.18 0.14 0.23 0.09 0.28 0.23 0.23 0.42 0.23 0.55 0.92 2.03 2.95 0.83 0.46 10.19 Moderately Stable 0.37 0.05 0.14 0.05 0.09 0,23 0.14 0.18 0.18I 0.18 0.05 0.05 0.51 1.34 0.69 0.23 4.47 Extremely Stable Wind Direction by Wind Speed N NME NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 CA L M 0.23 0.23 0.46 0.32 0.37 0.42 0.32 0.32 0.37 0.51 0.55 0.74 0.42 0.37 0.37 0.14 6.13 < 3.5 mph 1.98 1.25 1.61 2.17 1.80 1.25 0.78 1.43 2.63 2.86 2.21 2.12 3.32 4.01 2.81 1.75 33.99 3.6 - 7.5 mph 1.85 2.26 1.89 2.40 1.94 0.88 1.06 2.17 4.20 4.01 1.85 2.68 4.61 6.50 1.98 1.66 41.93 7.6 - 12.5 mph 0.69 0.32 0.46 0.65 0.92 0.32 0.28 0.51 0.65 1.38 1.25 1.11 2.40 1.75 0.78 1.43 14.90 12.6 - 18.5 mph 0.23 0.00 0.00 0.00 0.00 0.00 0.32 0.09 0.00 0.18 0.18 0.55 0.88 0.18 0.05 0.28 2.95 18.6 - 24.5 mph 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.05 0.00 0.00 0.00 0.09 > 24.5 mph Page 96

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station July-September, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

Number of observations - 2093 Values are Percent Occurrence SPEED------------------WIND DIRECTION CLASSES CLASS N NNE NE ENE E ESE SE SSE S SSW STABILITY CLASSES------ ------

SW WSW W WNW NW NNW TOTAL EU mu Su N Ss Ms ES TOTAL EU 0.00 0.00 0. 00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 mu 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Su 0.00 0.00 0. 00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 L SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M Ms 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 EU 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 0.10 0.10 mu 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.10 0.10 0.05 0.05 0.00 0.00 0.38 0.38 1Su0 0.05 0.05 0.10 0.05 0.00 0.00 0.00 0.10 0.*10 0.14 0.19 0.14 0.10 0.05 0.00 0.05 1.10 1.10

- N 0.76 1.05 0.91 0.72 1.1is 0.48 0.33 0.86 0.38 0.67 0.72 0.72 0.81 0.91 0.76 0.48 11.71 11.71 3 SS 0.81 1.15 1.00 1.53 1.34 0.96 0.48 0.76 0.76 1.29 1.86 1.62 2.15 2.10 1.77 0.81 20.40 20.40 Ms 0.62 0.19 0.19 0.29 0.29 0.24 0.14 0.10 0.10 0.48 0.72 1.00 1.29 2.44 1.72 0.62 10.42 10.42 ES 0.43 0.24 0.33 0.14 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.48 1.24 1.48 1.43 0.48 6.35 6.35 50.45 EU 0.00 0.00 0.00 0.00 0.10 0.05 0.05 0.10 0.10 0.38 0.43 0.43 0.29 0.05 0.00 0.00 mu 1.96 1.96 0.10 0.05 0.00 0.19 0.24 0.05 0.05 0.05 0.05 0.24 0.48 0.29 0.53 0.24 0.10 0.10 2.72 4SU0 0.19 0.14 0.05 2.72 0.14 0.14 0.10 0.19 0.10 0.14 0.29 0.29 0.43 0.62 0.72 0.33 0.24 4.11

- N 1.15 4.11 0.72 0.67 1.00 1.58 1.53 1.53 0.33 1.19 0.86 0.96 0.86 0.81 1.72 3.06 0.72 18.68 7 SS 0.33 18.68 0.38 0.29 0.14 0.96 0.33 0.33 0.57 2.01 1.19 0.29 0.10 0.53 0.96 1.67 0.48 10.56 M4S 0.00 0.19 10.56 0.14 0.00 0.00 0.05 0.00 0.05 0.00 0.05 0.00 0.00 0.00 0.29 0.10 0.00 0.86 ES 0.00 0.00 0.86 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 0.05 38.94 EU 0.05 0.00 0.00 0.00 0. 05 0.00 0.00 0.00 0.00 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.19 0.19 mu 0.05 0.05 0.00 0.00 0.05 0.05 0.05 0.00 0.00 0.10 0.00 0.00 0.05 0.00 0.10 0.14 0.62 0.62 8 St 0.43 0.10 0.00 0.00 0.10 0.10 0.05 0.00 0.00 0.05 0.00 0.00 0.00 0.14 0.24 0.33 1.53 1.53

- N 0.57 0.19 0.10 0.10 0.29 0.24 0.10 0.14 0.43 0.72 0.05 0.00 0.10 0.29 2.44 1.15 6.88 1 SS 6.88 0.05 0.14 0.00 0.00 0.05 0.00 0.00 0.05 0.19 0.10 0.00 0.00 0.00 0.00 0.19 0.10 0.86 2 MS 0.86 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 10.08 EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3SU0 0.00 0.00 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 0.05 0.05

- N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.29 0.10 0.38 0.38 1 Ss 0.00 0.00 0.00 0.00 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 0.05 8 MS 0.00 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 0.05 0.05 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 0.53 Page 97

SITE: LIMERICK GENERATING STATION - UNITS I & 2

. LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station July-September, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

SPEED ---------------------------------- WIND DIRECTION CLASSES ----------------------------------- --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 9 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

- N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 G MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 TOT 5.64 4.59 3.82 4.35 6.31 4.16 3.30 3.20 5.54 6.69 6.16 6.16 8.60 11.47 14.19 5.83 100.00 2.25 3.73 6.78 37.65 31.87 11.32 6.40 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES-0.05 0.00 0.00 0.00 0.14 0.05 0.05 0.10 0.14 0.48 0.48 0.43 0.29 0.05 0.00 0.00 2.25 Extremely Unstable 0.14 0.10 0.05 0.19 0.29 0.10 0.10 0.05 0.10 0.33 0.57 0.38 0.62 0.29 0.19 0.24 3.73 Moderately Unstable 0.67 0.29 0.14 0.19 0.24 0.19 0.24 0.19 0.24 0.48 0.48 0.57 0.72 0.96 0.57 0.62 6.78 Slightly Unstable 2.48 1.96 1.67 1.82 3.01 2.25 1.96 1.34 2.01 2.25 1.72 1.58 1.72 2.91 6.55 2.44 37.65 Neutral 1.24 1.62 1.29 1.67 2.34 1.29 0.81 1.39 2.96 2.58 2.15 1.72 2.68 3.06 3.63 1.43 31.87 Slightly Stable 0.62 0.38 0.33 0.29 0.29 0.29 0.14 0.14 0.10 0.53 0.72 1.00 1.34 2.72 1.82 0.62 11.32 Moderately Stable 0.43 0.24 0.33 0.19 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.48 1.24 1.48 1.43 0.48 6.40 Extremely stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C A L M 2.68 2.68 2.58 2.72 2.77 1.67 0.96 1.82 1.43 2.63 3.68 4.06 5.64 7.02 5.69 2.44 50.45 < 3.5 mph 1.82 1.43 1.15 1.53 3.01 2.10 2.15 1.19 3.49 3.01 2.44 2.10 2.77 3.97 5.26 1.53 38.94 3.6 - 7.5 mph 1.15 0.48 0.10 0.10 0.53 0.38 0.19 0.19 0.62 1.05 0.05 0.00 0.14 0.43 2.96 1.72 10.08 7.6 - 12.5 mph 0.00 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 0.29 0.14 0.53 12.6 - 18.5 mph 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18.6 - 24.5 mph 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 > 24.5 mph Page 98

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station July-September, 2005 175 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

Number of Observations = 2154 Values are Percent Occurrence SPEED --------- ----------------------- WIND DIRECTION CLASSES ------------------------------- --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 L SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.05 0.05 0.00 0.00 0.00 0.14 0.14 1 SU 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.14 0.00 0.00 0.00 0.05 0.00 0.28 0.28

- N 0.88 0.74 0.37 0.32 0.32 0.19 0.14 0.19 0.32 0.32 0.19 0.42 0.28 0.23 0.28 0.23 5.43 5.43 3 SS 0.37 0.60 0.74 0.74 0.65 0.37 0.14 0.23 0.09 0.09 0.28 0.23 0.23 0.37 0.56 0.56 6.27 6.27 MS 0.14 0.14 0.19 0.09 0.00 0.09 0.05 0.19 0.05 0.05 0.09 0.23 0.23 0.23 0.32 0.19 2.27 2.27 ES 0.09 0.09 0.09 0.09 0.09 0.09 0.00 0.00 0.09 0.00 0.09 0.14 0.19 0.42 0.09 0.09 1.67 1.67 16.06 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.05 0.28 0.05 0.00 0.00 0.00 0.00 0.46 0.46 MU 0.05 0.09 0.09 0.09 0.00 0.00 0.05 0.00 0.05 0.28 0.28 0.19 0.19 0.05 0.09 0.00 1.49 1.49 4 SU 0.37 0.00 0.19 0.05 0.00 0.05 0.09 0.05 0.19 0.28 0.28 0.32 0.51 0.05 0.09 0.05 2.55 2.55

- N 0.70 0.60 1.35 1.02 0.88 0.56 0.56 0.74 0.88 0.97 0.93 0.32 0.97 1.81 0.65 0.42 13.37 13.37 7 SS 0.37 0.70 0.65 0.70 0.70 0.51 0.46 0.65 0.65 1.81 0.84 0.70 1.44 1.81 0.65 0.56 13.18 13.18 MS 0.46 0.19 0.05 0.28 0.05 0.09 0.00 0.05 0.23 0.28 0.37 0.51 1.21 2.51 0.56 0.65 7.47 7.47 ES 0.23 0.09 0.05 0.09 0.00 0.00 0.00 0.09 0.09 0.14 0.00 0.23 1.39 1.62 0.37 0.32 4.74 4.74 43.27 EU 0.05 0.00 0.00 0.00 0.14 0.05 0.05 0.14 0.19 0.28 0.32 0.32 0.09 0.00 0.00 0.00 1.62 1.62 MU 0.19 0.00 0.00 0.00 0.23 0.09 0.00 0.05 0.09 0.05 0.28 0.05 0.32 0.05 0.19 0.05 1.62 1.62 8 EU 0.19 0.09 0.00 0.09 0.19 0.14 0.09 0.05 0.23 0.09 0.28 0.28 0.19 0.42 0.23 0.56 3.11 3.11

- N 0.79 0.42 0.28 0.28 1.25 1.21 0.79 0.37 0.84 0.46 0.46 0.70 1.11 1.67 1.81 0.79 13.23 13.23 1 SS 0.28 0.23 0.14 0.09 0.65 0.32 0.14 0.79 2.18 1.11 0.51 0.65 0.97 1.11 0.65 0.42 10.26 10.26 2 MS 0.32 0.09 0.00 0.00 0.05 0.14 0.00 0.00 0.19 0.42 0.14 0.09 0.42 0.97 0.09 0.05 2.97 2.97 ES 0.09 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.00 0.42 0.88 0.05 0.00 1.58 1.58 34.40 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.09 1 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.09 0.00 0.14 0.09 0.00 0.00 0.00 0.37 0.37 3 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.05 0.05 0.09 0.00 0.14 0.00 0.19 0.60 0.60

- N 0.14 0.09 0.00 0.00 0.05 0.28 0.23 0.19 0.19 0.42 0.05 0.14 0.23 0.70 0.60 0.05 3.34 3.34 1 SS 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.14 0.28 0.19 0.00 0.09 0.05 0.09 0.09 0.05 1.07 1.07 8 MS 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 0.05 0.00 0.00 0.09 0.09 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 5.57 Page 99

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station July-September, 2005 175 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

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

---

STABILITY CLASSES ---------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS 'ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 9 SU 0.00 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 0.05 0.05

- N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.23 0.09 0.05 0.00 0.00 0.19 0.05 0.00 0.60 0.60 2 SS 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 0.05 4 0.05 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.70 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 G MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2 0.00 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 TOT 5.71 4.27 4.18 3.99 5.29 4.18 2.92 3.90 7.38 7.61 5.94 5.94 10.63 15.37 7.47 5.20 100.00 2.18 3.62 6.59 35.98 30.83 12.81 7.99 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES-0.05 0.00 0.00 0.00 0.14 0.05 0.05 0.14 0.32 0.37 0.60 0.37 0.09 0.00 0.00 0.00 2.18 Extremely Unstable 0.23 0.09 0.09 0.09 0.23 0.09 0.09 0.05 0.19 0.42 0.56 0.42 0.65 0.09 0.28 0.05 3.62 Moderately Unstable 0.56 0.14 0.19 0.14 0.19 0.19 0.23 0.09 0.51 0.42 0.74 0.70 0.74 0.60 0.37 0.79 6.59 Slightly Unstable 2.51 1.86 2.00 1.62 2.51 2.23 1.72 1.49 2.46 2.27 1.67 1.58 2.60 4.60 3.39 1.49 35.98 Neutral 1.02 1.53 1.53 1.53 2.04 1.21 0.79 1.81 3.25 3.20 1.62 1.67 2.69 3.39 1.95 1.58 30.83 Slightly Stable 0.93 0.46 0.23 0.37 0.09 0.32 0.05 0.23 0.46 0.74 0.60 0.84 1.86 3.76 0.97 0.88 12.81 Moderately Stable 0.42 0.19 0.14 0.23 0.09 0.09 0.00 0.09 0.19 0.19 0.14 0.37 2.00 2.92 0.51 0.42 7.99 Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C A L M 1.49 1.62 1.39 1.25 1.07 0.74 0.32 0.60 0.65 0.46 0.79 1.07 0.97 1.25 1.30 1.07 16.06 c 3.5 mph 2.18 1.67 2.37 2.23 1.62 1.21 1.16 1.58 2.18 3.81 2.97 2.32 5.71 7.85 2.41 2.00 43.27 3.6 - 7.5 mph 1.90 0.84 0.42 0.51 2.51 1.95 1.07 1.39 3.71 2.46 2.04 2.09 3.53 5.11 3.02 1.86 34.40 7.6 - 12.5 mph 0.14 0.14 0.00 0.00 0.09 0.28 0.37 0.32 0.56 0.79 0.09 0.46 0.37 0.97 0.70 0.28 5.57 12.6 - 18.5 mph 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.28 0.09 0.05 0.00 0.05 0.19 0.05 0.00 0.70 18.6 - 24.5 mph n nn n nn n nn n n a no ann oo An ooo An ooo Ann 0.00 0.00 0.00 0.00 0.00 u.uu u.uu u.vv u.vv u.vv v.vv v .. v v .. v . _ _ 0.00 > 24.5 mph Page 100

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nluclear Station October-December, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

Number of Observations = 2033 Values are Percent Occurrence SPEED ----------------------- WIND DIRECTION CLASSES ----------------------------------

CLASS N NNE NE E --------- STABILITY CLASSES ----------

ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 O0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 L SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 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 SU 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 0.05 0.00 0.00 0.10 0.10

- N 0.74 0.64 0.74 0.59 0.39 0.39 0.30 0.20 0.15 0.10 0.25 0.34 0.39 0.05 0.39 0.44 6.10 6.10 3 SS 0.59 0.69 0.44 0.79 0.69 0.39 0.44 0.74 0.59 0.25 1.13 1.43 0.98 2.21 1. 08 0.84 13.28 13.28 MS 0.34 0.10 0.15 0.20 0.49 0.54 0.15 0.10 0.15 0.49 0.49 0.59 1.18 1.08 0.84 0.25 7.13 7.13 ES 0.39 0.25 0.20 0.30 0.10 0.00 0.10 0.00 0.00 0.00 0.15 0.15 0.79 0.59 0.59 0.49 4.08 4.08 30.69 EU 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 0.05 0.05 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.20 0.20 4 SU 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.15 0.10 0.00 0.05 0.00 0.00 0.00 0.05 0.39 2.07 0.39

- N 1.23 1.67 1.77 0.98 0.84 0.34 0.39 0.54 0.74 0.49 0.89 1.33 1.82 2.85 1.28 19.23 7 SS 0.25 0.74 19.23 0.74 0.54 0.30 0.30 0.39 0.54 1.03 1.87 0.64 0.84 2.56 3.30 1.97 0.39 16.38 16.38 MS 0.00 0.00 0.05 0.10 0.00 0.10 0.10 0.05 0.00 0.15 0.10 0.00 0.20 0.15 0.10 0.05 1.13 ES 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 0.05 0.00 0.00 0.00 0.05 0.05 37.43 EU 0.00 0.00 0.00 0.00 0.00 0.00 0,00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.10 0.05 0.00 0.00 0.00 0.00 0.00 0.15 0.15 8 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.05 0.15 0.00 0.00 0.05 0.00 0.00 0.30 0.30 N 0.54 0.34 0.10 0.44 0.34 0.20 0.10 0.25 0.89 0.20 0.30 0.05 1.57 4.82 5.12 1.08 16.33 16.33 1 SS 0.05 0.00 0.00 0.10 0.20 0.54 0.44 0.25 0.20 0.25 0.05 0.00 0.10 1.18 1.57 0.05 4.97 4.97 0.00 2 MS 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 0.05 0.00 0.10 0.10 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 21.84 EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.25 0.25 0.10 0.00 0.05 0.74 0.89 6.15 0.00 8.41 8.41 1 SS 0.00 0.00 0.00 0.00 0.05 0.00 0.10 0.20 0.05 0.00 0.00 0. 00 0.00 0.10 0.34 0.00 0.84 0.84 8 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 9.25 Page 101

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station October-December, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

SPEED ---------------------------------- WIND DIRECTION CLASSES ----------- --------------------- --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 9 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

- N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.69 0.00 0.69 2 SS 0.00 0.00 0.69 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 0.05 4 MS 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 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 0.74 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 G MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 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 0.05 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.05 TOT 4.97 3.98 4.08 4.82 3.59 3.34 2.56 2.95 4.13 4.48 3.84 4.08 9.84 16.63 21.79 4.92 100.00 0.05 0.34 0.79 50.81 35.51 8.36 4.13 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES-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 0.05 Extremely Unstable 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.20 0.05 0.00 0.00 0.00 0.00 0.00 0.34 Moderately Unstable 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.25 0.15 0.15 0.05 0.00 0.10 0.00 0.05 0.79 Slightly Unstable 3.34 2.21 2.51 2.80 1.72 1.43 0.74 1.08 1.82 1.13 1.03 1.03 3.98 7.92 15.25 2.80 50.81 Neutral 0.89 1.43 1.18 1.43 1.23 1.23 1.43 1.72 1.87 2.36 1.82 2.26 3.64 6.79 4.97 1.28 35.51 Slightly Stable 0.34 0.10 0.20 0.30 0.54 0.64 0.25 0.15 0.15 0.64 0.59 0.59 1.38 1.23 0.98 0.30 8.36 Moderately Stable 0.39 0.25 0.20 0.30 0.10 0.00 0.10 0.00 0.00 0.00 0.15 0.15 0.84 0.59 0.59 0.49 4.13 Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C A L M 2.07 1.67 1.52 1.87 1.67 1.33 0.98 1.03 0.93 0.84 2.02 2.21 3.30 4.33 2.90 2.02 30.69 < 3.5 mph 2.31 1.97 2.46 2.41 1.28 1.28 0.89 0.98 1.77 2.95 1.28 1.77 4.13 5.26 4.92 1.77 37.43 3.6 - 7.5 mph 0.59 0.34 0.10 0.54 0.59 0.74 0.54 0.49 1.13 0.59 0.54 0.05 1.67 6.05 6.74 1.13 21.84 7.6 - 12.5 mph 0.00 0.00 0.00 0.00 0.05 0.00 0.10 0.44 0.30 0.10 0.00 0.05 0.74 0.98 6.49 0.00 9.25 12.6 - 18.5 mph 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 0.69 0.00 0.74 18.6 - 24.5 mph 0.00 0.00 0.00 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 > 24.5 mph 0&106DO(lOU O(sOp2O.OOhOsOb4lO2T Page 102

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station October-December, 2005 175 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

Number of Observations = 2163 Values are Percent Occurrence SPEED ---------------------------------- WIND DIRECTION CLASSES -----------

CLASS N NNE NE --------- STABILITY CLASSES ----------

ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 L SS 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 M MS 0.00 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 0.00 0.00 0.00 0.00 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 0.05 0.05 0.05 0.09 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 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 SU 0.00 0.00 0.00 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 0.05

- N 0.32 0.32 0.28 0.18 0.18 0.14 0.09 0.18 0.05 0.14 0.05 0.23 0.18 0.09 0.28 0.23 2.96 2.96 3 SS 0.23 0.18 0.18 0.18 0.37 0.37 0.32 0.23 0.00 0.09 0.18 0.09 0.14 0.14 0.18 0.23 3.14 3.14 MS 0.23 0.05 0.23 0.18 0.28 0.23 0.09 0.18 0.14 0.05 0.14 0.09 0.14 0.09 0.32 0.18 2.64 2.64 ES 0.05 0.18 0.00 0.09 0.14 0.14 0.09 0.00 0.18 0.23 0.14 0.23 0.55 0.51 0.14 0.23 2.91 2.91 11.70 EU 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 0.05 0.05 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.14 4 SU 0.00 0.00 0.00 0.00 07M 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.14 0.14 N 1.39 1.16 0.92 1.11 0.60 0.23 0.46 0.28 0.37 0.18 0.28 0.18 0.46 0.83 0.55 0.51 9.52 7 SS 9.52 0.23 0.42 0.74 0.51 0.23 0.42 0.32 0.65 0.65 0.88 0.65 0.46 1.02 1.66 0.97 0.42 10.22 10.22 Ms 0.14 0.09 0.37 0.18 0.09 0.05 0.14 0.28 0.42 0.05 0.46 0.65 0.46 0.88 0.28 0.18 4.72 ES 4.72 0.00 0.05 0.09 0.09 0.09 0.18 0.18 0.23 0.14 0.18 0.28 0.28 0.51 0.60 0.14 0.05 3.10 3.10 27.88 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 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 0.05 0.05 8 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.28. 0.05 0.05 0.00 0.00 0.00 0.00 0.00 0.37 0.37

- N 1.16 0.79 0.69 1.06 0.60 0.51 0.23 0.28 0.46 0.37 0.42 0.83 1.48 3.28 1.57 1.66 15.40 15.40 1 SS 0.46 0.69 0.28 0.23 0.37 0.23 0.23 0.69 1.16 1.39 0.79 0.83 2.31 3.37 1.02 0.60 14.66 14.66 2 MS 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.05 0.14 0.05 0.23 0.32 0.32 0.69 0.37 0.00 2.22 2.22 ES 0.00 0.14 0.00 0.00 0.09 0.00 0.00 0.05 0.00 0.09 0.18 0.05 0.09 0.18 0.00 0.00 0.88 0.88 33.56 EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 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 0.09 0.09 3 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.09 0.05 0.00 0.05 0.00 0.00 0.00 0.18 0.18

- N 0.46 0.18 0.18 0.05 0.00 0.14 0.09 0.37 0.79 0.23 0.05 0.32 2.73 5.59 1.76 0.51 13.45 13.45 1 SS 0.05 0.00 0.05 0.00 0.23 0.18 0.74 0.18 0.18 0.32 0.05 0.18 1.06 1.76 0.28 0.00 5.27 5.27 8 MS 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.09 0.09 0.00 0.00 0.28 0.28 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 19.28 Page 103

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station October-December, 2005 175 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

SPEED ---------------------------------- WIND DIRECTION CLASSES --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU N SS MS SU ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 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 0.05 0.05 9 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

- N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.14 0.18 0.14 0.00 0.79 2.73 1.16 0.00 5.18 5.18 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.18 0.05 0.05 0.05 0.00 0.05 0.28 0.00 0.00 0.69 0.69 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 5.92 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 G MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.18 0.00 0.05 0.00 0.00 0.32 0.60 0.23 0.00 1.39 1.39 2 SS 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 0.05 0.00 0.00 0.14 0.14 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.05 0.00 0.00 0.05 0.05 1.57 TOT 4.72 4.25 4.02 3.98 3.37 2.82 3.10 4.16 5.22 4.99 4.16 4.76 12.76 23.49 9.29 4.90 100.00 0.05 0.32 0.74 47.90 34.17 9.85 6.98 100.00 wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW hW NNW TOTAL -STABILITY CLASSES-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 0.05 Extremely Unstable 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.05 0.23 0.00 0.00 0.00 0.00 0.00 0.00 0.32 Moderately Unstable 0.00 0.00 0.00 0.00 0.05 0.00 0.00 0.00 0.32 0.14 0.09 0.00 0.05 0.00 0.05 0.05 0.74 slightly Unstable 3.33 2.45 2.08 2.40 1.39 1.02 0.88 1.34 1.80 1.16 0.92 1.57 5.96 13.13 5.55 2.91 47.90 Neutral 0.97 1.29 1.25 0.97 1.20 1.20 1.66 2.03 2.03 2.73 1.71 1.57 4.58 7.26 2.45 1.25 34.17 Slightly Stable 0.37 0.14 0.60 0.42 0.42 0.28 0.23 0.51 0.69 0.18 0.83 1.06 1.02 1.76 0.97 0.37 9.85 Moderately Stable 0.05 0.37 0.09 0.18 0.32 0.32 0.28 0.28 0.32 0.51 0.60 0.55 1.16 1.34 0.28 0.32 6.98 Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-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 0.05 0.09 C A L M 0.83 0.74 0.69 0.65 0.97 0.88 0.60 0.60 0.37 0.51 0.51 0.65 1.02 0.83 0.97 0.88 11.70 < 3.5 mph 1.76 1.71 2.13 1.90 1.06 0.88 1.16 1.43 1.66 1.39 1.66 1.57 2.45 3.98 1.94 1.20 27.88 3.6 - 7.5 mph 1.62 1.62 0.97 1.34 1.06 0.74 0.46 1.06 2.03 1.99 1.66 2.03 4.21 7.54 2.96 2.27 33.56 7.6 - 12.5 mph 0.51 0.18 0.23 0.05 0.28 0.32 0.83 0.55 0.97 0.79 0.14 0.51 3.93 7.44 2.03 0.51 19.28 12.6 - 18.5 mph 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.23 0.18 0.28 0.18 0.00 0.83 3.01 1.16 0.00 5.92 18.6 - 24.5 mph 0.o0 0.-0 0.00 0.00 0.00 0.00 0.00 0.28 0.00 0.05 0.00 0.00 0.32 0.69 0.23 0.00 1.57 > 24.5 mph Page 104

SITE: LIMERICK GENERATING STATION - UNITS I & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station January-December, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

Number of Observations = 8290 Values are Percent Occurrence SPEED ---------------------------------- WIND DIRECTION CLASSES CLASS N NNE NE ENE E ESE --------- STABILITY CLASSES ----------

SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00.

L SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 M MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.00 0.01 0.00 0.00 0.00 0.04 0.04 MU 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.04 0.04 0.01 0.01 0.00 0.00 0.13 0.13 1 SU 0.01 0.01 0.02 0.01 0.00 0.00 0.00 0.02 0.04 0.07 0.05 0.06 0.02. 0.02 0.00 0.01 0.36 0.36

- N 0.63 0.68 0.82 0.71 0.64 0.33 0.22 0.33 0.27 0.41 0.47 0.35 0.54 0.72 0.52 0.45 8.07 8.07 3 SS 0.55 0.75 0.75 1.01 0.80 0.48 0.36 0.47 0.58 0.87 1.36 1.27 1.52 1.79 1.16 0.66 14.38 14.38 MS 0.35 0.16 0.19 0.27 0.34 0.25 0.10 0.05 0.12 0.33 0.42 0.78 1.22 1.56 1.06 0.46 7.65 7.65 ES 0.30 0.19 0.21 0.21 0.06 0.02 0.02 0.01 0.01 0.01 0.08 0.25 0.93 1.12 0.88 0.52 4.84 4.84 35.46 EU 0.00 0.02 0.00 0.00 0.02 0.01 0.01 0.02 0.10 0.24 0.23 0.18 0.14 0.01 0.00 0.00 1.00 1.00 MU 0.02 0.01 0.01 0.07 0.08 0.04 0.02 0.02 0.04 0.16 0.23 0.12 0.21 0.07 4 SU 0.05 0.05 1.21 1.21 0.05 0.08 0.05 0.07 0.12 0.05 0.07 0.02 0.11 0.22 0.16 0.19 0.29 0.33 0.16 0.16 2.12 2.12

- N 1.71 1.05 1.46 2.16 1.50 0.78 0.70 0.59 1.05 1.11 0.76 0.88 1.48 2.16 2.75 7 SS 1.45 21.59 21.59 0.45 0.59 0.46 0.47 0.70 0.31 0.37 0.62 1.24 1.17 0.35 0.45 1.38 2.33 1.42 0.49 12.80 12.80 MS 0.00 0.08 0.05 0.02 0.01 0.07 0.08 0.04 0.00 0.08 0.05 0.02 0.13 0.23 0.14 0.05 1.07 1.07 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 0.02 0.05 0.06 0.01 0.16 0.16 39.95 EU 0.01 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.07 0.00 0.02 0.06 0.00 0.00 0.00 0.18 0.18 MU 0.02 0.01 0.00 0.05 0.04 0.04 0.01 0.01 0.01 0.07 0.02 0.04 0.05 0.02 0.02 0.04 0.46 0.46 8 SU 0.13 0.10 0.01 0.04 0.06 0.02 0.01 0.00 0.07 0.12 0.05 0.04 0.02 0.27 0.23 0.17 1.34 1.34 N 0.58 0.31 0.36 0.63 0.69 0.36 0.07 0.21 0.55 0.43 0.13 0.24 1.17 2.76 3.85 1.41 13.76 1 Ss 13.76 0.08 0.04 0.02 0.05 0.21 0.22 0.18 0.23 0.25 0.13 0.01 0.00 0.10 0.47 0.66 0.16 2.81 2 MS 2.81 0.00 0.01 0.00 0.00 0.01 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.01 0.08 0.08 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 0.01 0.00 0.01 0.01 18.65 EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.00 0.00 0.00 0.00 0.02 0.06 0.06 3 SU 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.11 0.02 0.00 0.16 0.16

- N 0.06 0.00 0.01 0.05 0.02 0.01 0.04 0.10 0.06 0.05 0.01 0.04 0.28 0.88 2.94 0.24 4.79 4.79 1 SS 0.00 0.00 0.00 0.00 0.04 0.00 0.06 0.06 0.05 0.00 0.00 0.00 0.00 0.05 0.13 0.04 0.42 0.42 8 MS 0.00 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 0.00 0.00 0.01 0.01 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 5.44 Page 105

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station January-December, 2005 30 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

SPEED ---------------------------------- WIND DIRECTION CLALSSES ---------------------------------- --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE SSW SW WSW W WNW NW NNW TOTAL EU mU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 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 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 9 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01

- N 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.35 0.04 0.42 0.42 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.02 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.47 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 G mu 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 N 0.00 0.00 0.00 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 0.02 0.02 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.02 TOT 5.02 4.10 4.44 5.83 5.34 3.00 2.36 2.80 4.61 5.55 4.46 4.97 9.60 14.98 16.48 6.45 100.00 1.22 1.87 3.99 48.66 30.43 8.82 5.01 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES-0.01 0.02 0.00 0.00 0.04 0.01 0.01 0.02 0.11 0.31 0.24 0.21 0.22 0.01 0.00 0.00 1.22 Extremely Unstable 0.06 0.02 0.02 0.12 0.12 0.07 0.04 0.04 0.08 0.23 0.30 0.19 0.27 0.11 0.07 0.12 1.87 Moderately Unstable 0.21 0.19 0.08 0.12 0.18 0.07 0.08 0.05 0.22 0.41 0.27 0.29 0.34 0.72 0.41 0.35 3.99 Slightly Unstable 3.00 2.04 2.65 3.55 2.85 1.48 1.03 1.22 1.93 2.00 1.38 1.51 3.47 6.54 10.43 3.58 48.66 Neutral 1.09 1.38 1.23 1.53 1.74 1.01 0.99 1.38 2.14 2.17 1.72 1.71 2.99 4.63 3.38 1.35 30.43 Slightly Stable 0.35 0.25 0.24 0.29 0.36 0.33 0.19 0.08 0.12 0.41 0.47 0.81 1.36 1.80 1.23 0.52 8.82 Moderately Stable 0.30 0.19 0.21 0.22 0.06 0.02 0.02 0.01 0.01. 0.01 0.08 0.25 0.95 1.17 0.95 0.53 5.01 Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C A L M 1.85 1.79 2.00 2.21 1.83 1.09 0.70 0.88 1.05 1.69 2.44 2.75 4.26 5.22 3.62 2.10 35.46 < 3.5 mph 2.23 1.85 2.03 2.81 2.44 1.27 1.27 1.31 2.53 2.98 1.77 1.85 3.66 5.17 4.58 2.21 39.95 3.6 - 7.5 mph 0.83 0.47 0.40 0.76 1.01 0.64 0.29 0.45 0.89 0.83 0.22 0.34 1.40 3.53 4.80 1.79 18.65 7.6 - 12.5 mph 0.08 0.00 0.01 0.05 0.06 0.01 0.10 0.16 0.12 0.05 0.04 0.04 0.29 1.04 3.10 0.30 5.44 12.6 - 18.5 mph 0.02 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.00 0.00 0.00 0.00 0.01 0.35 0.06 0.47 18.6 - 24.5 mph 0.00 0.00 0.00 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 0.02 > 24.5 mph Page 106

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station January-December, 2005 175 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

Number of observations = 8617 Values are Percent Occurrence SPEED ---------------------------------- WIND DIRECTION CLASSES ----------- _______________--__-- --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES TOTAL EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 MU 0.00 0.00 0. 00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 C SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 A N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 L SS 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 0.01 0.01 M MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.01 0.01 0.01 0.02 EU 0.00 0.00 0.00 0;00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 mU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.01 0.01 0.00 0.00 0.00 0.03 '0.03 1 SU 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.05 0.00 0.00 0.00 0.03 0.00 0.10 0.10

- N 0.44 0.32 0.32 0.23 0.24 0.14 0.10 0.13 0.16 0.19 0.12 0.22 0.23 0.22 0.16 0.23 3.47 3.47 3 SS 0.19 0.27 0.35 0.34 0.32 0.27 0.19 0.16 0.06 0.09 0.19 0.22 0.22 0.21 0.27 0.23 3.56 3.56 MS 0.12 0.08 0.15 0.09 0.12 0.14 0.08 0.10 0.05 0.05 0.13 0.15 0.12 0.14 0.19 0.13 1.82 1.82 ES 0.08 0.07 0.06 0.05 0.08 0.09 0.06 0.03 0.09 0.13 0.09 0.10 0.23 0.26 0.16 0.12 1.71 1.71 10.70 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.03 0.08 0.03 0.00 0.00 0.00 0.00 0.19 0.19 MU 0.01 0.03 0.02 0.02 0.00 0.01 0.02 0.00 0.05 0.09 0.12 0.06 0.05 0.01 0.05 0.00 0.55 0.55 4 SU 0.10 0.03 0.08 0.02 0.05 0.02 0.03 0.01 0.09 0.10 0.07 0.10 0.17 0.07 0.06 0.05 1.08 1.08

- N 1.13 0.91 1.42 1.40 0.86 0.36 0.37 0.51 0.62 0.55 0.57 0.38 0.84 1.31 0.73 0.63 12.57 12.57 7 SS 0.38 0.51 0.64 0.53 0.57 0.42 0.30 0.51 0.63 1.18 0.78 0.59 0.91 1.44 0.77 0.50 10.65 10.65 MS 0.28 0.12 0.20 0.17 0.03 0.10 0.08 0.13 0.29 0.15 0.28 0.52 0.80 1.24 0.41 0.32 5.13 5.13 ES 0.26 0.08 0.06 0.07 0.03 0.08 0.09 0.10 0.12 0.13 0.12 0.19 0.70 0.96 0.39 0.24 3.62 3.62 33.78 EU 0.01 0.02 0.00 0.00 0.03 0.01 0.01 0.03 0.12 0.24 0.14 0.15 0.03 0.00 0.00 0.00 0.81 0.81 mU 0.06 0.00 0.00 0.06 0.08 0.07 0.00 0.02 0.06 0.08 0.15 0.06 0.10 0.01 0.06 0.02 0.84 0.84 8 SU 0.06 0.08 0.02 0.07 0.09 0.05 0.03 0.02 0.26. 0.10 0.15 0.15 0.15 0.19 0.10 0.21 1.74 1.74

- N 1.30 0.77 0.85 1.32 1.13 0.56 0.41 0.49 0.93 0.71 0.42 0.85 1.69 2.41 1.82 1.45 17.09 17.09 1 Ss 0.53 0.55 0.31 0.28 0.66 0.24 0.29 0.74 1.38 0.95 0.53 0.72 1.64 2.26 0.84 0.45 12.38 12.38 2 MS 0.12 0.05 0.01 0.01 0.06 0.06 0.02 0.06 0.10 0.15 0.15 0.17 0.43 1.14 0.19 0.03 2.75 2.75 ES 0.05 0.06 0.00 0.01 0.03 0.00 0.00 0.01 0.00 0.03 0.06 0.02 0.14 0.53 0.05 0.01 1.01 1.01 36.63 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.06 0.01 0.07 0.01 0.00 0.00 0.00 0.16 0.16 1 MU 0.00 0.00 0.00 0.02 0.00 0.00 0.01 0.01 0.01 0.06 0.05 0.07 0.06 0.00 0.00 0.02 0.31 0.31 3 SU 0.02 0.02 0.00 0.01 0.00 0.00 0.01 0.00 0.02 0.10 0.08 0.07 0.20 0.12 0.03 0.08 0.78 0.78

- N 0.31 0.13 0.20 0.17 0.26 0.28 0.10 0.21 0.35 0.36 0.23 0.35 1.71 2.94 1.29 0.73 9.61 9.61 1 SS 0.06 0.05 0.02 0.03 0.17 0.13 0.26 0.24 0.24 0.23 0.05 0.12 0.44 0.70 0.21 0.10 3.05 3.05 8 MS 0.00 0.01 0.00 0.00 0.01 0.00 0.00 0.01 0.00 0.01 0.00 0.00 0.03 0.06 0.01 0.00 0.15 0.15 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 0.01 0.01 0.02 0.01 0.06 0.06 14.12 Page 107

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Limerick Nuclear Station January-December, 2005 175 ft. Wind Speed and Direction 266Ft-26Ft Delta-T (F)

SPEED --------- __--------------------- WIND DIRECTION CLASSES ----------------------------------- --------- STABILITY CLASSES ----------

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU mu SU N SS MS ES TOTAL EU 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 0.00 0.00 0.00 0.01 0.01 1 mu 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.02 0.00 0.00 0.07 0.00 0.01 0.07 9 SU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.09 0.00 0.00 0.01 0.13 0.13

- N 0.05 0.00 0.00 0.01 0.00 0.00 0.03 0.03 0.10 0.14 0.13 0.13 0.58 1.54 0.59 0.10 3.45 2 3.45 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.06 0.05 0.05 0.01 0.01 0.00 0.02 0.08 0.05 0.00 0.32 4 0.32 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 3.98 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 a MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 T SU 0.00 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 0.00 0.00 0.01 0.01 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.05 0.00 0.02 0.00 0.00 0.17 0.29 0.15 0.00 0.68 0.68 2 Ss 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.02 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.06 0.06 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.01 0.00 0.00 0.01 0.01 0.77 TOT 5.56 4.17 4.71 4.96 4.84 3.03 2.58 3.70 5.86 5.99 4.75 5.56 11.80 18.16 8.62 5.72 100.00 1.17 1.80 3.84 46.87 30.05 9.85 6.42 100.00 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES-0.01 0.02 0.00 0.00 0.03 0.01 0.01 0.03 0.16 0.34 0.23 0.27 0.05 0.00 0.00 0.00 1.17 Extremely Unstable 0.08 0.03 0.02 0.10 0.08 0.08 0.03 0.03 0.13 0.24 0.32 0.22 0.22 0.02 0.10 0.06 1.80 Moderately Unstable 0.19 0.15 0.10 0.10 0.14 0.07 0.08 0.03 0.38 0.32 0.35 0.34 0.63 0.37 0.23 0.35 3.84 Slightly Unstable 3.23 2.12 2.79 3.14 2.48 1.33 1.02 1.42 2.16 1.96 1.46 1.93 5.22 8.72 4.75 3.14 46.87 Neutral 1.16 1.37 1.32 1.20 1.73 1.06 1.09 1.73 2.38 2.47 1.56 1.65 3.23 4.70 2.12 1.29 30.05 Slightly Stable 0.51 0.26 0.36 0.28 0.22 0.30 0.19 0.30 0.44 0.36 0.56 0.85 1.38 2.58 0.79 0.49 9.85 Moderately Stable 0.38 0.21 0.12 0.13 0.15 0.17 0.15 0.15 0.21 0.29 0.27 0.31 1.08 1.78 0.63 0.39 6.42 Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WIND SPEED CLASSES-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 0.01 0.02 C A L M 0.82 0.75 0.88 0.71 0.77 0.64 0.43 0.43 0.38 0.45 0.57 0.71 0.81 0.82 0.81 0.71 10.70 c 3.5 mph 2.16 1.68 2.41 2.23 1.54 1.00 0.91 1.26 1.82 2.24 2.01 1.88 3.46 5.04 2.40 1.74 33.78 3.6 - 7.5 mph 2.12 1.52 1.20 1.75 2.09 0.99 0.77 1.38 2.84 2.27 1.60 2.12 4.19 6.55 3.05 2.18 36.63 7.6 - 12.5 mph 0.39 0.21 0.22 0.24 0.44 0.41 0.38 0.48 0.64 0.82 0.42 0.67 2.46 3.82 1.57 0.95 14.12 12.6 - 18.5 mph 0.06 0.00 0.00 0.01 0.00 0.00 0.09 0.08 0.15 0.17 0.15 0.17 0.70 1.62 0.64 0.13 3.98 18.6 - 24.5 mph 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.07 0.02 0.02 0.00 0.00 0.19 0.31 0.15 0.00 0.77 > 24.5 mph Page 108

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Appendix E Corrections to Previous Submittals Page 109

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC.*

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SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC An error in reporting the average release rate for fission and activation gas was discovered for the first*

quarter of 2004. The original result reported was 1.99E+00 uCVsec. The correct value should have been 2.28E+00 uCi/sec. The error was the result of duplicate data from a two-week period of time in the first quarter being entered into the effluent tracking software. This duplicate data came from the backup particulate and iodine skid samples. That error resulted in 14 additional days being added to the total number of days in the quarter, resulting in 104 days for the quarter. The corrected Table 1 is reproduce below. Tine error is highlighted with a revision bar at the right margin. This error had no material impact on the assessment and conclusions drawn from the radiological releases from Limerick. Releases from Limerick continue to be a small fraction of the ODCM limits.

TABLE 1 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES PERIOD 2004 A. FISSION AND ACTIVATION GASSES Units Qtr 1 Qtr 2 Qtr 3 Otr 4 Est. Tr

1. Total Release Ci 1.80E+01 1.20E+01 5.91 E+00 1.23E+01 3.66Eifi

2. Average Release Rate for Period uCVsec 2.28E+00 1.53E+00 7.51 E-01 1.55E+00

3. Percent of ODCM Limit - Gamma 2.90E-01 1.86E-01 6.02E-02 1.22E-01

- Beta  % 8.75E-02 5.50E-02 1.87E-04 3.79E-02 B. IODINES Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Est. 1i

_ _ _ _j i l l_ _ _ Error %

1. Total 131 Ci 1.16E-04 7.99E-05 < LLD < LLD 2.04Ej

2. Average Release Rate for Period uCisec 1.28E-05 1.02E-05 < LLD < LLD

3. Percent of Limit  %

• C. PARTICULATES Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Est. rI

1. Particulales with T 1/2 > 8 days Ci 2.39E-05 1.55E-06 3.42E-05 < LLD 2.26EI

2. Average Release Rate for Period uCisec 2.64E-06 1.98E-07 4.34E-06 < LLD

3. Percent of ODCM Limit  %

4. Gross Al )ha Ci < LLD < LLD < LLD < LLD D. TRITIUM Qtr_4 Est._Total Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Est.rroral 1.Total Relsase jCi 1_.65E+00

_ . 4.54E+00 J< LLD ___ < LLD  %

1.57E.+01 1Error

12. Averaae Release Rate for Period uCi/sec I 1.82E-01 I 5.79E-01 I < LLD I < LLD

3. PercentofODCM Limit I % I I I I *- I E. Iodine 131 & 133, Tritium & Particulate I Units I Qtr 1 Qtr 2 l Otr 3 l O Qtr4 l l1ecenf ODCMLimit 7  % I 3.67E-02 I 7.93E-02 I 4.15E-05 I <LLD

• ODCM Limit is for combined Iodine, tritium and particulate only, which is shown in Item E.

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