ML101250324

From kanterella
Jump to navigation Jump to search
Annual Radioactive Effluent Release Report
ML101250324
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 04/27/2010
From: Mudrick C
Exelon Corp, Exelon Generation Co
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
T.S. 6.9.1.8
Download: ML101250324 (108)


Text

Limerick Generating Station www.exeloncorp.com Exeltn. Nuclear 3146 Sanatoga Road Pottstown, PA 19464 T.S. 6.9.1.8 April 27, 2010 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Limerick Generating Station, Unit 1 and 2 Facility Operating License Nos. NPF-39 and NPF-85 NRC Docket Nos. 50-352 and 50-353 and 07200065

Subject:

2009 Annual Radioactive Effluent Release Report

Reference:

Exelon Limerick Letter to NRC on ISFSI from 8/1/08 to 8/1/09 dated 9/25/09 In accordance with Section 6.9.1.8 of Limerick Generating Station (LGS) Technical Specifications and Section 6.2 of the Offsite Dose Calculation Manual, attached is the 2009 Annual Radioactive Effluent Release Report No. 35 for LGS. Also attached is the Process Control Program, revision 7.

In accordance with 10CFR72.44(d)(3) Limerick has reviewed TLD data from the ISFSI modules currently loaded. During the period of August 1, 2009 to December 31, 2009, there were no liquid or gaseous effluent releases from the ISFSI at Limerick.

There are no commitments contained in this letter.

If you have any questions or require additional information, please do not hesitate to contact us.

Sincerely, Christopher H. Mudrick Vice President-LGS Exelon Generation Company, LLC

Attachment:

1. 2009 Annual Radioactive Effluent Release Report No. 35 for LGS
2. Process Control Program Rev. 7 cc: S. Collins, Administrator, Region I, USNRC (w/Attachments)

E. DiPaolo, LGS USNRC Senior Resident Inspector (w/Attachments)

T. Moslak, Inspector Region I, USNRC (w/Attachments)

USNRC Spent Fuel Project Office, Washington, DC (w/Attachments)

E. Thorton-Jones-US EPA, Office of Radiation and Indoor Air, Radiation Protection Division, Center of Waste Management, 1200 Pennsylvania Ave. MC 6608J, Washington, D.C.20460 (w/Attachments)

bcc: P. Cowan - KSA 3P (w/o Attachments)

J. Grimes - KSA-3N (w/o Attachments)

C. Mudrick - GML 5-1 (w/o Attachments)

E. Callan-GML 5-1 (w/o Attachments)

S. Johnson-GML 5-1 (w/o Attachments)

D. Helker - KSA 3P (w/o Attachments)

D. Merchant - GML 1-1 (w/Attachments)

J. Hunter III - SSB 2-4 (w/Attachments)

A. Columbus - SMB 1-2 (w/Attachments)

D. Wahl - SSB 2-3 (w/Attachments)

L. Birkmire - SSB 2-2 (w/Attachments)

D. Eisenhut - NSRB (w/Attachments)

M. Murphy - PADEP BRP (w/Attachments)

S. Focht - ANI (w/Attachments)

Nuclear Annual Radioactive Effluent Release Report No. 35 2009 Limerick Generating Station

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT NO. 35 January 1, 2009 through December 31, 2009 EXELON GENERATION COMPANY, LLC LIMERICK GENERATING STATION UNITS NO. 1 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)

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

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

1. Introduction 1
2. Supplemental Information 1 A Regulatory Limits 1 B Effluent Concentration Limits Effluent Concentration Limits 2 C Average Energy (E) 2 D Measurements and Approximations of Total Radioactivity 2 E Batch Releases 4 F Abnormal Releases 4 G Spills 4 H Revisions to the ODCM 5 I Radioactive Effluent Monitoring Instrumentation Out of Service for More Than 30 Days 5 J Independent Spent Fuel Storage Installation (ISFSI) 5 K Compliance to 40 CFR 190 Limits 5 Appendix A - Effluent and Waste Disposal Summary 7 Appendix B - Solid Waste and Irradiated Fuel Shipments 17 Appendix C - Radiological Impact to Man 21 Appendix D - Meteorological Data 25 Page

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

4.-;

(Page Intentionally Left Blank)

Page ii

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

1. Introduction 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 Generating Station Units 1 and 2 for the period January 1, 2009 through December 31, 2009. 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.

Meteorological data was reported in the format specified in Regulatory Guide 1.23, Revision 1, "Meteorological Monitoring Programs For Nuclear Power Plants".

All vendor results were received and included in the report calculations. Therefore the 2009 report is complete.

2. Supplemental Information A. Regulatory Limits Limit Units Receptor ODCM and 10 CFR 50, Appendix I Desian Obiective Limits
1. Noble Gases:
a. < 500 mrem/Yr Total Body ODCM Control 3.2.2.1.a

< 3000 mrem/Yr Skin

b. <10 m Rad Air Gamma Quarterly air dose limits

< 20 mRad Air Beta ODCM Control 3.2.2.2.a

c. < 20 m Rad Air Gamma Yearly air dose limits

< 40 mRad Air Beta ODCM Control 3.2.2.2.b

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

< 30 mrem Skin (Beta) II.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 m rem Any Organ Quarterly dose limits ODCM Control 3.2.2.3.a
c. < 30 m rem Any Organ Yearly dose limits ODCM Control 3.2.2.3.b
3. Liquid Effluents
a. Concentration 10 CFR 20, Appendix B, Table 2 ODCM Control 3.2.1.1 Col. 2
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. 40 CFR 190

<25 mrem Total Body or Organ Yearly dose limits

< 75 mrem Thyroid ODCM Control 3.2.3 Page 1

SITE: LIMERICK GENERATING STATION - UNITS 1 & 21 LICENSEE: EXELON GENERATION COMPANY, LLC B. Effluent Concentration Limits 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 Effluent Concentration Limit (ECL) specified in 10 CFR 20, AppendixB, Table 2, Column 2 for identified nuclides, were used to calculate permissible release rates and concentrations for liquid release per the Limerick Offsite Dose Calculation Manual Cohtrol 3.2.1.1., The total activity concentration for all dissolved or entrained gases was limited to <'2E-04 pCi/ml.

C. Average Energy (E)

The LimerickODCM :imits~the instantaneous doseequivalent rates due to the release of noble gases to less than or equal4o 500, mrem/year to the total body. and less than 'or equal to 3000 mrem/year to the skin. 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, m'aybe used to calculate doses inlieu of. more sophisticated software. The Limerick, radioactive-effluent programrnem ploys the methodologies presented in U.S. NRC Regulatory Guide 1.109 "Calculation of Annual Doses to Man from Routine. Releases of Reactor Effluents for the Purpose of Evaluating Compliance with' 10 CFR Part 50, Appendix I,"

Revision 1, October 1977 and NUREG-01 33, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants, October 1978. Therefore, average energies are not applicable to Limerick.

D. Measurements andApproximations of Total Radioactivity -

1. Fission and Activation Gases .

The method used for Gamma Isbtopic Analysisis the Canberra Gamma Spectroscopy System with a gas Marinelli, beaker. Airborne effluent gaseous activity was continuously monitored and recorded in accordance with 0DCM Table,4.2-2. Additional vent grab samples were taken from the North Stack, Unit 1 South Stack and Unit 2 South Stack andanalyzed at least monthly to determine the isotopic mixture of noble gas activity released for the month. The data from the noble gas radiation monitor were analyzed

  • - to report net noble gas effluentactivity. When no activity was found in the grab isotopic analysis; the isotopic mixturewas assumed to be that evaluated in the UFSAR (Section 11.5, Table 11.5-4). If activity was founld in the'grab isotopic analysis, the isotopic mixture-for the Noble Gas Monitor was determined from that isotopic mixture.

Each mdnth'a rm-onitor'background was determined at the time of the noble gas grab sample and used to determine net radiation monitor activity. When no isotopic activity w

was identified in the grab nobl6 gas sample, the noble gas radiation monitor 15-minute average data for one-hour prior to'and one-hour post noblegas 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 for Gamma Isotopic Analysis 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 Page 2

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC 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 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 sum ming the activity content of all batch releases discharged during the month.
4. Tritium in Liquid and Gaseous Effluents Tritium in Liquid Effluents is analyzed using a Liquid Scintillation Counter.

Air from stack effluentswas-passed through two bubblers in series "and an aliquot of the Water from each bubbler was analyzed2using'a Liquid Scintillation Counter.

5. Composite Samples..and Low'er Limitof 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, Srr89 and Sr-90.(quarterly). 'These composites were submitted to an offsite vendor laboratory for analysis.

The 0DCM required lower limit of detection for'airborne and liquid releases are as follows:

Airboene' "LLD Gross Alpha 1E-11 uCi/cc Sr-89, Sr-90 1E-11 uCi/cc 1-131 1E-12 uCi/cc 1-133 1E-10 uCi/cc Principal'Gammad Emitters (Mn-54, Fe-59, Co-58, Co-60, Zn-65, Mo- 1E-11 uCi/cc 99, I-131,,CS-1134, Cs-137,Ce-1 41, Ce-i 44)

Noble Gas (Kr-87, Kr-88,,Xe-il338 Xe-i 33m, Xe-1 35,Xe-135m, Xe-138)1EOuic H-3 1E-06 uCi/cc Liquid:

Principal Gamma EmittersII .(Mn-54,

... Fe-59,

.. I. Co-58, Co-60, I .Zn-65,Mo--

... , I .. 5E-07 uC i/m l 99, Cs-134, Cs-137,,Ce-141,. Ce-144) 1-131 1E-06 uCi/mI Entrained Gases (Kr-87, Kr-88, Xe-133, Xe-133m, Xe-1 35, Xe-135m, 1E-05 uCi/ml

... . 1E I

.Xe-138)

H-3 "E-05 1 uCi/mI Gross Alpha, 1E-07 uCi/ml Sr-89, Sr-90 5E-08 uCi/mI Fe-55 1E-06 uCi/mI

6. Estimated Total Error Present Procedure CY-AA-170-2100, Estimated Errors of Effluent Measurements, provides the methodology to obtain an overall estimate of the error associated with radioactive effluents.

Page 3

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC E. Batch Releases Liquid Qtr 1 'Qtr 2 Qtr3 Qtr 4 Total Number of Batch Releases 38 34 39 35 146 Total time period for batch releases (min) 3.26E+03 2.84E+03 3.16E+03 2L84E+03 1.21E+04 Maximum time period for batch release (min) 1.20E+02 1.13E+02 9.60E+01 1.01 E+02 1.20E+02 Average time period for batch release (min) 8.57E+01 8.34E+01 8.10E+01 8!110E+01 8.28E+01 Minimum time period for batch release (min) 5.50E+01 1.60E+01 4.OOE+01 3'50E+01 1.60E+01 Average stream flow (Schuylkill River) during ýi periods of release of effluents into a flowing 2.42E+04 2.11 E+04 2.19E+04 4.42E+04 2.42E+04 stream (gpm) _..

Aux Boiler Waste Oil Incineration Qtr 1 Qtr 2 Qtr 3 -,Qtr 4 Total Number of Batch Reieases 0 01 . 0 0 0 Total time period for batch releases (min) ,,0 . 0. 0 0 Maximum time periodfor- batch release(min) 0!. 0 0 0 0 Average time period for batch release (mir) 0 0 0 0 0 Minimum time period for batch.release (min) 0 0 0 0 0 Gaseous Qtr 1 Qtr 2 .Qtr 3 Qtr 4 Total Number of Batch. Releases 0 0. 0. 0 0 Total time period for batch 'releases +(min) 0 0 '.'0 0 0 Maximum time period for batch release (min) 0 0 0 0 0 Average time period for batch release (min) 0 0. 0 0 0 Minimum time period for batch release (min) -0 0 0 0 0 F. Abnormal Releases

1. Liquid '

,Number of Releases:

Total Activity Released (Ci)

- I Qtrl1 0W Qtr2 1-7.47E-04 Qtr 3

0 0

Qtr 4 0

0 Total 1

7.47E-04

2. Gaseous Number of Releases Total Activity Released (Ci) * -.

0 0

0 0-0 0 1 0 0

0 0

G. Spills On February 138 2009 a leak from the exterior walls of both Ul and U2 condenser bays was discovered via operator rounds (1R880716). The condensation was observed drippijrng directly to open ground and asphalt. Water samples were collected and analyzed for gamma isotopic and tritium. No gamma emitting nuclides were identified; however, tritium was identified at a concentiration of 3.90E-03 uCi/ml.

Sampling of NPDES outfalls verified that no offsite release of tritium occurred. The release to ground occurred for up to six days until catch containments were installed. The total release of tritium to the ground was conservatively estimated at 1.23E-03 Curies. Groundwater sampling, as part of the radiological groundwater protection program (RGPP), has identified tritium in one down gradient well, MW-LM-9, at a maximum concentration of 1750 pCi/L, which is below the environmental lower limit of detection (LLD) of 2000 pCi/L.

Page 4

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC The leaks along the condenser bay joints were sealed with caulk and periodic inspections for future leaking has been added to operator rounds. All data related to this release was added to the Stations 10 CFR 50.75(g) decommissioning file.

On April 3, 2009 the water from the catch containments was released to the station's holding pond. The holding pond releases through the normal liquid effluent release point at outfall 001. The catch containment water contained approximately 747 uCi of tritium.

H. Revisions to the ODCM There were no changes made to the ODCM in 2009 Radioactive Effluent Monitoring InstrUmentation Out of Service for More Than 30 Days Per ODCM Control 3.1.1, "Radioactive.Liquid Effluent Monitoring Instrumentation" and Control 3.1.2 "Radioactive Gaseous Effluent Monitoringilnstrumentation", instrumentation requires:

With less than the minimum number of radioactive gaseous effluent monitoring instrumentation channels OPERABLE; take the ACTION shown in Table 3.1-1 (liquids) or and Table 3.1-2 (gas). Restore the inoperable instrumentation to OPERABLE status within the time specified in the ACTION or explain in the next Annual Radioactive Effluent Release Report.why this inoperability-wasnotcorrected-within the time specified.. The following is a discus'sion-of instrumentation out of service-for greater than 30 days:

As reported in the 2008 ARERR, the Liquid Radwaste effluent line flow indicator (FI-063-053) was declared inoperable on June 22, 2008 and remained inoperable through the end of 2008.

Release flows were conservatively reduced to ensure that release flows did not exceed the ODCM limit of 255 gallons per minute.

The effluent line flow monitor was-not repaired within the 30-day time frame was due to the complex troubleshooting that was required to determine the cause of the suspect flow readings. The flow orifice was eventually replaced, which required an engineering change request to evaluate the replacement. However, this did not eliminate the issue.

Troubleshooting is continuing.

The Liquid Radwaste effluent line flow indicator (FI-063-053) remained inoperable until July 1, 2009 after Engineering completed their assessment (IR859104, A1692301;),. At no time did the discharge flow exceed the pre-release calculation criteria.

J.. Independent Spent Fuel Storage Installation (ISFSI)

An Independent Spent Fuel Storage Installation (ISFSI) was placed in service starting July 21, 2008. In 2009 the dose to nearest resident to the ISFSI was non detectable using thermoluminescent dosimeters from the Radiological Environmental Monitoring, Program.

K. Compliance to 40 CFR 190 Limits .

The radioactive material released during this repor'ting period and the doses listed in this report were within the limits of the ODCM and 40 CFR 190. A detailed analysis of doses to Members of the Public is presented in Appendix C, Radiological Impact to Man.

Page 5

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

Page 6

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 1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC (Page Intentionally Left Blank)

Page 8

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

LICENSEE: . EXELON GENERATION COMPANY, LLC LIST OF TABLES PAGE TABLE A-1 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES 11 TABLE A-1A GASEOUS EFFLUENTS-GROUND-LEVEL RELEASE-BATCH MODE 14 TABLE A-1B GASEOUS EFFLUENTS - GROUND LEVEL RELEASE - CONTINUOUS MODE 13 TABLE A-2 LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES 14 TABLE A-2A LIQUID EFFLUENTS - BATCH MODE 15 TABLE A-2B LIQUID EFFLUENTS - CONTINUOUS MODE 16 Page 9

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

. .' I (Page Intentionally Left Blank)

Page 10

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE A-1 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES PERIOD 2009 Fission And Activation Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Total Uncertainty Gasses (%)

Total Release Ci 6.35E+00 5.51E+00 1.31E+01 3.18E+00 2.82E+01 36.6 Average Release Rate for uCi/sec Period 8.05E-01 6.99E-01 1.67E+00 4.03E-01 8.93E-01 Dose - Gamma Air Dose mrad 1.1OE-02 7.07E-03 1.94E-02 3.91 E-03 4.14E-02

- Beta Air Dose mrad 6.41 E-03 4.25E-03 1.12E-02 2.36E-03 2.42E-02 Percent Pe offMmito ODCM Limit

% 0.11 0.07 0.19 0.04 0.21

- Gamma Air Dose

- Beta Air Dose-  % 0.03 0.02 0.06 0.01 0.06 Radioiodines Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Total Uncertainty Total Release Ci 7.85E-05 9.35E-06 < LLD < LLD 8.78E-05 20.4 Average Release Rate for uCi/sec 9.96E-06 1.19E-06 < LLD < LLD 2.79E-06 Period Percent of ODCM Limit  %..

Particulates Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Total Uncertainty Total Release Ci 2.38E-05 2.50E-05 < LLD < LLD 4.88E-05 22.6 Average Release Rate for uCi/sec 3.02E-06 3.17E-06 < LLD < LLD 1.55E-06 Period

'Percent of ODCM Limit  %*.....

  • Gross Alpha Radioactivity Ci < LLD < LLD < LLD < LLD <LLD-Tritium Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Total Uncertainty Total Release Ci 1.25E+01 5.42E+00 7.50E+00 7.96E+00 3.34E+01 15.7 Average Release Rate for uCi/sec Period 1.59E+00 6.87E-01 9.51 E-01 1.01 E+00 1.07E+00

[Percent of ODCM Limit  % I. I I .

Iodine 131 & 133, Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Total Particulate & Tritium Organ Dose mrem 2.19E-02 5.74E-03 7.35E-03 7.81E-03 3.68E-02 Percent of ODCM Limit  % 0.15 0.04 0.05 0.05 0.12

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

Page 11

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE A-1A GASEOUS EFFLUENTS-GROUND-LEVEL RELEASE-BATCH MODE PERIOD 2009 Fission And Units Qtr 1 Qtr 2 Qtr 3 Qtr 4. Total Activation Gasses Ar-41 Ci N/A N/A N/A N/A N/A Kr-85 Ci N/A N/A N/A N/A N/A Kr-85m Ci N/A N/A N/A N/A N/A Kr-87 Ci N/A N/A N/A N/A N/A Kr-88 Ci N/A N/A N/A N/A N/A Xe-133 Ci N/A N/A N/A N/A N/A Xe-135 Ci N/A N/A N/A N/A N/A Xe-135m ' Ci N/A N/A N/A N/A 'N/A Xe-138 Ci N/A N/A N/A N/A N/A

!Total Ci N/A ' N/A [ N/A N/A N/A Radioiodines Units Qtr 1 Qtr 2 [ Qtr 3 Qtr 4 . Annual 1-131 Ci N/A N/A . N/A N/A N/A 1-135 Ci N/A N/A N/A N/A N/A Total Ci N/A N/A N/A N/A N/A Particulates Units Qtr 1 Qtr2 Qtr 3 I Qtr 4 Annual Cr-51 Ci N/A N/A N/A N/A N/A Mn-54 Ci

  • N/A N/A N/A, N/A N/A Co-58 Ci N/A N/A N/A N/A N/A Co-60 Ci N/A N/A N/A N/A N/A Zn-65 Ci N/A N/A N/A N/A N/A Sr-89 Ci N/A N/A N/A N/A ,N/A Sr-90 Ci N/A N/A N/A N/A N/A Mo-99 Ci N/A N/A N/A N/A N/A Ag-110m Ci _ N/A N/A N/A N/A N/A Cs-1 34 Ci N/A N/A N/A N/A N/A Cs-137 Ci N/A N/A N/A N/A N/A Ba-140 Ci N/A N/A N/A N/A i N/A La-140 Ci N/A N/A N/A N/A N/A Ce-141 Ci' N/A N/A N/A N/A N/A Ce-144 Ci N/A N/A N/A N/A N/A Total Ci N/A N/A - N/A N/A N/A IH-3 Ci N/A N/A N/A N/A N/A IGross Alpha. Ci N/A N/A N/A I N/A N/A Page 12

SITE: LIMERICK GENERATING STATION - UNITS 1 -&2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE A-1 B GASEOUS EFFLUENTS - GROUND LEVEL RELEASE - CONTINUOUS MODE PERIOD 2009 Fission And Activation Gasses Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Total Kr-85m Ci 1.20E-01 9.87E-02 2.31 E-01 5.66E-02 5.07E-01 Kr-85 Ci 3.57E-01 1.23E-01 4.14E-01 5.83E-02 9.53E-01 Kr-87 Ci 1.92E-01 1.23E-01 3.14E-01 6.82E-02 6.97E-01 Kr-88 Ci 3.19E-01 1.67E-01 4.61E-01 8.90E-02 1.04E+00 Ar-41 Ci 1.06E-01 2.77E-01 9.40E-01 1.72E-01 1.49E+00 Xe-131m Ci 8.95E-03 3.08E-03 1.04E-02, 1.46E-03 2.39E-02 Xe-133 Ci 5.86E-01 1.45E+00 2.67E+00 8.97E-01 5.61E+00 Xe-1 35m Ci 1.22E+00 1.30E+00 2.83E+00. 7.68E-01 6.13E+00 Xe-135 Ci 1.59E+00 1.20E+00 2.89E+00 6.80E-01 6.36E+00 Xe-138 Ci 1.84E+00 7.69E-01 2.36E+00 3.87E-01 5.35E+00 Total Ci 6.35E+00,. 5.51E+00 1.31 E+01 3.18E+00 2.82E+01 Radiolodines Units; Qtr 1 Qtr 2 Qtr 3 Qtr 4 - Total I1-31 Ci 7.85E-05 9.35E-06 < LLD < LLD 8.78E-05 1-133 Ci < LLD < LLD < LLD < LLD < LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD Total Ci - 7.85E-05', 9.35E-06 < LLD < LLD 8.78E-05 Particulates Units Qtr 1 " Qtr 2 Qtr 3 Qtr 4 Annual Cr-51 Ci <LLD ,. <LLD <.LLD <LLD <LLD Mn-54 Ci <LLD I <LLD <LLD <LLD <LLD Co-58 Ci < LLD < LLD < LLD < LLD < LLD Co-60 Ci 2.38E-05 < LLD < LLD < LLD 2.38E-05 Zn-65 Ci < LLD < LLD < LLD .- <LLD <LLD Sr-89 Ci < LLD < LLD <,LLD < LLD I <,LLD Sr-90 Ci < LLD <LD <LLD < LLD <LLD Mo-99 Ci < LLD < LLD < LLD:", < LLD <LLD Ag-110m Ci < LLD < LLD < LLD < LLD <LLD Sb-125 Ci < LLD 2.50E-_05 < LLD . < LLD 2.50E-05 Cs-134 Ci < LLD < LLD < LLD. < LLD < LLD Cs-137 Ci <LLD <LLD <L-LD <LLD ' <LLD Ba-140 Ci <fLD < LLD < LLD < LLD < LLD La-140 Ci < LLD <LLD < LLD < LLD < LLD Ce-141 Ci < LLD < LLD < LLD <LLD <LLD Ce-144 Ci <LLD < LLD < LLD < iLLD . . < LLD Total Ci 2.38E-05 2.50E-05 < LLD < LLD 4.88E-05 IH-3 Ci I 1.25E401 5.42E+00 I7.50E+00 J 7.96E+00 I 3.34E+01 IGross Alpha Ci I < LLD < LLD I < LLD I < LLD I < LLD Page 13

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE A-2 LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES PERIOD 2009 Fission and Activation Products Excluding Units Qtr 1 Otr 2 Qtr 3 Qtr 4 Total, Uei Tritium, Gasses & Alpha)

Total Release Ci 6.63E-04 2.35E-03 3.89E-04 -6.26E-04 4.03E-03 21.1 Average Concentration uCi/mI 8.20E-09 3.81 E-08 5.44E-09 :4.92E-09 1.18E-08 Dose - Whole Body mrem 2.44E-01 1.17E-01 1.90E-01 2.23E-01 7.75E-01

-.Organ mrem .2.44E-0I 1.17E-01 1.90E-01 2.23E-01 7.75E-01

% of ODCM Limit6.21

- Whole Body Dose*  % 8.15 3.91 6.32 7.44 12.91

- Organ Dose*  % 2.44 1.17 1.90 2.23 3.87

. .... + Uncertainty Tritium Units Qtr 1 Qtr 2 _Qtr 3 Qtr 4 Total (%)

Total Release Ci '7.33E+00 4.58E+00ý :5.40E+00 '5.12E+00 2.24E+01 6.4 Average Concentration uCi/ml 9.06E-05 7.41 E-05 7.57E-05 4.02E-05 6.57E-05

% of ODCM Limit - ECL  % 0.91% 0.74% 0.76% 0.40% 0.66%

'Dissolved and Entrained T 4 Total Uncertainty Gases ', +Units Qtr 1 - Qtr 2 Qtr 3 Qtr 4 Total (%)

Total Release Ci <LLD < LLD - <LLD 3.63E-05 3.63E-05 21.1 Average Concentration uCi/ml N/A N/A' N/A 2.85E-10 .1.06E-10

% of ODCM Limit - ECL'  % N/A N/A N/A 0.00% 0.00%

Gross Alpha Total'Release Average Concentration Voum

} Units Ci uCi/mI AUncertainty Qtr 1

<LLD ofWse-e N/A o ae-

-Qtr 2

  • <LLD N/A Qtr 3

< LLD

- Qt, 4

< LLD N/A

'UnTartainty Total

<LLD N/A Uei 23.0 Volume of Dilution Water Units Otr 1 Qtr 2 Otr 3 Qtr 4 Total (%)

used during period - , ___ r ___ ___ I___ N___f Total Liters 7.87E+07 5.99E+07 6.18E+07 1.25E+08 3.33E+08 3.6

[Averane Concentration " I uCi/rnl I N/A I N/A I N/A I N/A I N/A I Percent of limit incluides gases and tritium.

Page 14

SITE: LIMERICK GENERATING STATION - UNITS 1 &'2 LICENSEE: EXELON GENERATION COMPANY, LLC TABLE A-2A LIQUID EFFLUENTS - BATCH MODE PERIOD 2009 Fission and .2 Activation Products Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Total Cr-51 Ci 6.24E-05 3.15E-04 < LLD < LLD 3.78E-04 Mn:-54 Ci 1.29E-04 3.02E-04 4.61 E-05 2.30E-05 5.OOE-04 Mn-56 Ci < LLD 1.08E-06 < LLD <LLD 1.08E-06 Co-58 Ci 3.O0E-06 2.72E-05 < LLD 2.36E-05 5.38E-05 Fe-55 Ci < LLD < LLD < LLD < LLD <LLD Fe-59 Ci < LLD < LLD <LLD < LLD < LLD Co-60 . Ci 4.28E-04 - 1.47E-03 2.65E-04 2.57E-04 2.42E-03 Zn-65 . Ci. 2.18E-05 1.83E-04 1.15E-05 2.71E-04 4.88E-04 Sr-89 Ci < LLD, <LLD <. LLD < LLD <LLD Sr-90 Ci < LLD <LLD < LLD < LLD < LLD Y-92 Ci < LLD 1.27E-05 < LLD < LLD 1.27E-05 Zr-95 Ci LLD <LLD <LLD < LLD' ,LLD Nb-95 Ci. 1.06E-06 1.04E-06 < LLD. < LLD 2.10E-06 Nb-97 Ci <LLD: -< LLD < LLD 7.94E-07 '7.94E-07 Mo-99 - Ci- < LLD, .. <LLD <;.LLD.., < LLD < LLD TC-99m Ci <LLD '<LLD <LLD <LLD <LLD AG-110m Ci <LLD 8.64E-06 < LLD < LLD 8"64E-06 Sb-124 Ci <LLD 1.38E-05 8.09E-06 1.59E-06 2.35E-05 Sb-125 Ci 6.50E-06 7.24E-06, 5.11E-05. 4.42E-05 1.09E-04 1-131 .CI < LLD, 1.80E-06 .-. <.LLD,. 4.51 E-07 2.25E-06 Cs-134 - Ci < LLD. 2.26E-06 <.LLD < LLD 2.26E-06 Cs-137 Ci 1.13E-05 4.53E-06 6:69E-06 2.36E-06 2.49E-05 Ba-140 Ci < LLD- <LLD <LLD <LLD <'LLD La-140 Ci <,LLD <LLD <LLD 1'.54E-0'06 1.54E-06 Ce-141 Ci <LLD <LLD, LLD <LLD < LLD Total Ci 6.63E-04 2.35E-03 3.89E-04 6.26E-04 4.03E-03 Dissolved and" -  :... . . ....

Dissolved and Units .Qtr 1 Qtr 2 Qtr-3, ... Qtr 4 Total' Entrained Gases Xe-131m Ci < LLD < LLD < LLD 3.02E-05 3.02E-05 Xe-133 Ci < LLD < LLD .<-LLD -6.,09E-06.,-, 6.09E-06 Xe-135 Ci < LLD < LLD < LLD < LLD < LLD Total Ci < LLD < LLD < LLD 3.63E-05 3.63E-05 IH-3 Ci 1 7.33E+00 4.58E+00 5.40E+00 I 5.12E+00 2"24E+01 IGross Alpha Ci I < LLD <LLD I < LLD I < LLD <LLD Page 15

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2.

LICENSEE: EXELON GENERATION COMPANY, LLC TABLE A-2B LIQUID EFFLUENTS - CONTINUOUS MODE ',PERIOD 2009 Fission and Units Qtr I Qtr 2 Qtr 3 Qtr 4 Total Activation Products Cr-51 Ci N/A N/A N/A N/A N/A Mn-54 Ci N/A N/A N/A N/A N/A Fe-55 Ci N/A N/A N/A N/A *[ N/A Co-58 Ci N/A N/A N/A N/A N/A Fe-59 Ci N/A N/A N/A N/A N/A Co-60 Ci N/A N/A N/A N/A N/A Zn-65 Ci N/A N/A N/A N/A N/A Sr-89 Ci N/A N/A N/A N/A N/A Sr-90 Ci N/A N/A N/A N/A N/A Zr-95 Ci N/A N/A N/A N/A N/A Nb-95 Ci N/A N/A N/A N/A N/A Mo-99 Ci N/A N/A N/A N/A N/A Tc-99m Ci N/A N/A N/A N/A N/A Ag-i9m Ci N/A N/A N/A N/A N/A 1-131 Ci N/A N/A N/A N/A N/A Cs-134 Ci N/A N/A N/A N/A N/A Cs-137 Ci N/A N/A N/A N/A N/A Ba-140 Ci N/A N/A N/A N/A N/A La-140 Ci N/A N/A N/A N/A N/A Ce-141 Ci N/A N/A N/A N/A 'N/A Total Ci N/A N/A N/A N/A 'N/A Dissolved and Entrained Gases Units Qtr 1 Qtr 2 Qtr 3 Qtr 4 Total j

Xe-131m Ci N/A N/A N/A N/A IIN/A Xe-133 Ci N/A N/A N/A N/A N/A Xe-135 Ci N/A N/A N/A N/A ýrN/A Total Ci N/A N/A N/A N/A N/A 1H-3 Ci I N/A I N/A. I N/A I N/A I !N/A lGross Alpha Ci I N/A I N/A I N/A I N/A I iN/A I Page 16

SITE: LIMERICK GENERATING STATION - UNITS 1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC Appendix B Solid Waste and Irradiated Fuel Shipments Page 17

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

Page 18

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

A. Solid waste shipped offsite for burial or disposal (not irradiated fuel) 01/01/2009 - 12/31/2009

1. Type of waste Type of waste Unit 12 Month Period Estimated Error %
a. Spent resin, filters sludges, evaporator m3 114.21 25%

bottoms, etc Ci 7.56E+02

b. Dry compressible waste, contaminated m3 87.39 25%

equipment, etc. Ci 4.74E+00 Irradiated components, control rods, etc. m3 None N/A Ci None Other (Describe) m3 None N/A Ci None

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

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

Waste Class Isotope A Percent Curies

  • Abundance C-14 2.77E-01 0.04%

Mn-54 4.05E+01 5.36%

Fe-55 4.99E+02 66.01%

Co-60 1.62E+02 21.42%

Ni-59 4.24E-02 0.01%

Ni-63 7.99E+00 1.06%

Zn-65 3.47E+01 4.59%

Sr-90 1.54E-01 0.02%

Cs-137 5.93E+00 0.78%

Ce-144 2.14E+00 0.28%

Pu-241 1.54E+00 0.20%

H-3 5.83E-01 0.08%

Cr-51 1.11E+00 0.15%

Totals 7.56E+02 100.00%

  • Activity is estimated Page 19

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

Waste Class A Percent Isotope Curies

  • Abundance Mn-54 2.35E-01 4.96%

Fe-55 3.39E+00 71.61%

Co-60 9.20E-01 19.43%

Ni-63 4.79E-02 1.01%

Zn-65 7.60E-02 1.61%

Cs-137 1.40E-02 0.30%

Ce-144 5.1OE-02 1.08%

TOTALS 4.74E+00 100.00%

  • Activity is estimated
3. Solid Waste (Disposition)

Number of Mode of Transportation Destination Shipments 3 Truck Studsvik (THOR) to Energy Solutions / Clive 41 Truck Duratek to Energy Solutions / Clive 15 Truck Limerick Gen. Sta. to Energy Solutions / Clive

4. Waste (Processing)

Number of Mode of Transportation Destination Shipments I 37 Truck Limerick to Duratek

5. Waste (Solidification)

Number of Mode of Transportation Destination Shipments 0 N/A N/A Category A - 13 shipments Type A LSA Category A - 6 shipments > Type A LSA Category B - 33 shipments Type A LSA Category C - No shipments made Category D - No shipments made B. Irradiated Fuel Shipments (disposition) lNumber of Shipmentsj Mode of Transportation Destination N

10 1N/A N/A C. Changes to the Process Control Program Revision 7 of RW-AA-100, Process Control Program for Radioactive Wates was active on 01/23/2009. The changes wereadministrative in nature. The revision corrected formatting issues and standardized the use of shall, should, may and will in accordance with AD-AA-1 01-1002. The record retention requirements were moved to section 5 and corrected references. A complete legible copy of this document is attached.

Page 20

SITE: LIMERICK GENERATING STATION -UNITS 1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC Appendix C Radiological Impact to Man Page 21

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

LICENSEE: EXELON GENERATION COMPANY, LLC

" ..i *,

(Page Intentionally Left Blank)

Page 22

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Per ODCM 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 nearby uranium fuel cycle sources. For purposes of this calculation the following assumptions were made:

Gaseous

  • Five year annual average meteorology and actual gaseous effluent releases were used.
  • Gamma air dose, Beta air dose, Total Body and Skin doses were attributed to noble gas releases.

G Critical organ and age group dose attributed to iodine, particulate and tritium releases.

  • The Receptor with the highest dose was the nearest residence in the ESE sector at 1004 meters (x/Q = 2.27E-06 s/mA3, D/Q = 1.88E-08 1/mA2).
  • 100 percent occupancy factor was assumed.
  • For 40 CFR 190 compliance, the highest doses from the critical organ and critical age group for each release pathway was summed.

0 Thermoluminescence Dosimetry (TLD) measurements (minus background levels) obtained from the Radiological Environmental Monitoring Program for the nearest residence to the Independent Spent Fuel Storage Installation (ISFSI) was used to determine direct radiation exposure.

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

Maximum Individual Applicable Estimated Age Location  % of Limit Unit Dose Dose Group Distance Direction Applicable Noble Gas (meters) (toward) Limit Nearest Residence Gamma Air Dose 2.17E-03 All 1004 ESE 0.011 20 mRad Nearest Residence Beta Air Dose 1.27E-03 All 1004 ESE 0.003 40 mRad Nearest Residence Total Body 2.06E-03 All 1004 ESE 0.021 10 mrem Nearest Residence Skin 3.42E-03 All 1004 ESE 0.011 30 mrem Iodine, Particulate &

Tritium Nearest Residence Thyroid 6.06E-04 Teen 1004 ESE 0.002 30 mrem Liquid Total Body 7.75E-01 Child Aqua PA 12.92 6 mrem

[Liquid Liver 7.75E-01 Child Aqua PA 3.88 20 mrem 40 CFR 190 Compliance Liquid Direct T% of Gaseous Pathway Effluents Effluents RadiationApplicable Limit Unit Limit Total Body Dose 2.06E-03 7.75E-01 0 7.77E-01 3.11 25 mrem Organ Dose 6.06E-04 7.75E-01 0 7.76E-01 3.10 25 mrem Doses calculated were well below all ODCM and 40 CFR Part 190 limits of 25 mrem to a real individual.

The ODCM does not require population doses to be calculated.

ODCM Control 6.2 also requires that the Annual Effluent Release Report shall include an assessment of the radiation doses from radioactive liquid and gaseous effluents to members of the public due to activities inside the Site Boundary during the report period. 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, Page 23

SITE: LIMERICK GENERATING STATION -. UNITS'! . 2 LICENSEE: EXELON GENERATION COMPANY, LLC occupational education, or other purposes not associated with the plant. A MEMBER OF THE PUBLIC may receive up to 100 mrem in a year (10CFR20.1301). Areas within the site boundary, where radiation dose of this type could occur include the Limerick Information Center on Longview Road near tlhie rear exit of the plant, Frick's Lock on the south shore of the Schuylkill River and the railroad tracks that runs along the north shore of the River. 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 ofl the Public have been estimated using methodology stated in the ODCM. The maximum gaseous dose to imembers of the public at these locations is based on the following assumptions:

" Five year annual average meteorology and actual effluent releases for the the sectors encompacing the Railroad Tracks (W), Information Center, Frick's Lock and the Security Checkpoint were used.

  • Dose is from ground plane and inhalation only. No ingestion dose.
  • Adult age group was used for the State Police and National Guard Dose.
  • The maximum expected occupancy factor is 25% of a working year at all locations.

A summary of gaseous radiation doses to menmbers of ilt e:.ublic at these locations is as follows:

Iodine/Part/

Approx. x/Q D/Q Total Body H3 Location Sector Distance x/^ D/Q Dose Organ (meters) s/mA3 1/mA2 mrem(1 ) Dose,1 I _mrem( )

R.R. Tracks W 225 2.53E-06 2.09E-08 2.38E-03 6.53E-04 Info. Center ESE 884 6.55E-07 7.78E-09 6.55E-04 1.93E-04 Frick's Lock WSW 450 5.27E-07 4.30E-09 4.99E-04 1.36E-04 National Guard /

Security NNE 682 2.37E-07 2.42E-09 3.57E-04 1.01 E-04 Check Point Doses calculated were a small fraction of the 10 CFR 20.1301 limits.

Notes:

(1) The limit for sum of the Total Body Dose and Organ Dose = 100 mrem (ref. 10 CFR 20.1301)

Page 24

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

4' -

Page 25

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

1)

(Page Intentionally Left Blank)

'Page 26

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2; LICENSEE: EXELON GENERATION COMPANY, LLC LIST OF TABLES PAGE Table D - 1 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, January - March, 2009 29 Table D - 2 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, January- March, 2009 36 Table D - 3 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, April - June, 2009 43 Table D - 4 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, April - June, 2009 50 Table D - 5 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, July - September, 2009 57 Table D - 6 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, July - September, 2009 64 Table D - 7 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, October - December, 2009 71 Table D - 8 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, October - December, 2009 78 Table D - 9 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, January - December, 2009 85 Table D - 10 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, January - December, 2009 87 Table D - 11 Annual x/Q undepleded and D/Q values for the North Stack, Limerick Generating Station, 2009 89 Table D - 12 Annual x/Q undepleted and D/Q values for the South Stack, Limerick Generating Station, 2009 91 Page 27

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

V. K (Page Intentionally Left Blank)

Page 28

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 1 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, January - March, 2009 Period of Record: January - March 2009 Stability Class - Extremely Unstable - l7lFt-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 0 3 NNE 0 0 0 NE 0 0 0 ENE 0 0 2 E 0 0 0 ESE 0 0 0 SE 0 0 0 SSE 1 0 1 S 1 0 9 SSW 7 0 17 SW 1 0 9 WSW 3 0 7 W 1 1 10 WNW 13 7 27 NW 11 1 15 NNW 2 0 2 Variable 0 0 0 Total 2 49 . 42 9 0 0 102 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: 34 Page 29

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

'Wind Speed by Direction Measured at .30 Feet~for Various Stability Classes for the Table D0- 1 Limerick Generating Station, January-:-' March; 2009 Limerick Tower 1

.Pezicd. of Record: Januazy '- March , 2009 Stab'ility Class -Moderately Unstable - 171Ft-26Ft Delta-T (F)

Winds Mesured :at .30 Feet L. Wird Speed (in mph)

Wind Direction 1-3 '4-7 - 8-12 13-18, 19-24. > 24 Total N 0 2 0 0 S0 3 2 .

NNE 0 0 0 0 . 0 2 NE 0 0 0.1 0 0 0 0 ENE 0 0 0 0 t 0 1 E 0 1 K.

0 0z 0 0 . 0 0 ESE 0 0 02 0 0 1 SE 0O 0 0;, 0 *; 0 0 0 SSE 1 '"

0 0" 0 0 0 1 0 1' 0 0 0 2 "SSW 0 13 2 0 0 -0 15 SW 1 2 C, 0: 0. 0 0 3

  • °.: 0 WSW 1 1,; 2 0 0 3/40 W 3 0 0 5 WNW 1 10. 7 01 0 19
i. 12. 0 NW 7 23 3 46 02 0 NNW 1. 3 6 0 10 0*

0

'Variabl6 0' 0 a, 0 Total 5.- 46 ' 42 : 14:! 3 0 110 Hours of calm in this stability class- 0.

Hours' of miesng: wind: rteaturen.ients in thi... stability clalss: 0 Hours 'of missing' sta-bility' measuren-o a.2 in -all stability classes: 34 Page 30

SITE: LIMERICK GENERATING STATION-UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 1,4:; Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the:

Limerick Generating Station, January- March;, 2009 Limerick Tower 1 Period of Record: January - March 2009

-Stability Class - Slightly Unstable 1- 171Ft-267t Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Directicn / 1-3 4-7 8-12 13-18 19-24 > 24 Total

-- -- --- -o----- - -- - ..- --. .. .

N 0 9 6 0 0 0 15 NNE 2 1 0, 0 0 .0 3 NE 0 1 0 0' 0 0 1 ENE 0' 0 0 0 0 . 0 0 E 0 2 1 0 0 0 3

'ESE 0r I f- 0. 0. 0 0 1 SE 0, 2' 0 0 0 0 2 SSE 0 3 Olt 0 0 0 3 S 2 6' 1 11, 0 :0 10

-SSW 1 7 1it 0 0 .0 9 SW 21 4* 0" 0. 0 0 5 WSW 0 4. 0 0. 0 .'.0 4 W 0." 4 3 2 2 0 11 I'WNW 2 3 4 7- 1 ,"0 17 NW 1 8> 17 20 0 t0 46 NNW 0 3,- 7. 4 0 .0 14 Variable 0_ 0 0 0. 0 f-,0 0 Total 9* 58 40 34 3 2:. . 0 144 Hours of calm in this stability class:  :. 0 Hours of missing wind measurements in this.lstability.class: t0o

.Hours of missing stabilitymeasurements in allastability classes: 34 Page 31

SITE: LIMERICK GENERATING STATION-- UNITS"1 & 2' LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 1 Wind Speed byDirection Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, January --March, 2009 Limerick Tower 1 Pcriod of .Record: January:- March 2009

.Stability Class - Neutral - 171Ft-26Ft Delta-T (F)

Winds Measured at-130OFeet Wind Speed (in mph)

Wind Direction 1--3 - , 4-7 8-12-. 13-18' 19-214* > 24 Total N 10 23 20 0  : 0 54 1

NNE 18 14 0" 0' 0 0' 32 NE 16 28 0 0 00 44 ENE 10 31 5.- 01 0 0 46 E 11 23 19 0' 0 0 53 ESE 9 5 4' 0' 00 18 SE 6., 12 0 0 19 0.

SSE 6' 30 4-. 0 '0 40 S 10.. 28 . 7: 0, 0 '0 46 SSW 7. 29,. 8- 0 .0 44 8 '..'

SW 9 9: 0' 0 0 18 WSW 10r 6. 0" 0 0 16 W 14, 12 16 1 0 52 13 44 -: 80 31' 4 0 172 VrNW 14, 61. 121 73 5 0 274

7) 25 44 11;1 0 .0 87

-*Variable 01 0ý 0 0 0 '0 0

e Total 170 380 :, 329';i 126 10 0 1015 Hours of calm in this stability class: I.

Hours,-of missing-wirdne~surements in this.stability class: 0 :

Hours :of missing'stability meastrements in.all stability classes: i 34 Page 32

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

Table D -Wind Speed by Direction Measured at 30 Feet for;Various Stability Classes for the Limerick Generatiný Station, January- March, 2009 Limerick Tower I Period of Record: January:-' March 2009 Stability Class - Slightly Stable  ;- 171Ft-26Ft.Delta-T (F)

,Winds Measured at 30 Feet Wind:.Speed (in mph)

.r Wind °,

Direction

  • 1i3 4-.' 8-12 13-18 19-24 - > 24 Total N 7 3 1 0 0 11 NNE 8' 0 0o. .0 8 NE 10. 1 0 0 0 11 ENE 8 0' 0 16 10' 1 0. 0 17

';ESE 2, 7. 3 0. 0 10 SE - 15 3 3 0 '7 0 21 SSE 4 10z" 5' 0 0 19 0

S 15 .' 24 1* '0 40 0-SSW 21 23 0 47 3 4':

SW 27 5 0' 0 35 WSW 28 7 7 0., 0 42 0:

W - 34 27 , 6 '0 67 WNW 26 -. 37 9 2 -. 0 74 NW 31'. 25 9 1 0 66 NNW 4. 19 2 0' 25 0

Variable 2 1 0 0 3 Total 240 218 51 3 0 -,I,1 0 512 Hours of calm in this stability class:- '5.. . ..

Hours of missing wind measurements in this 'stability class: .0'.

Hours of missing'stability measurements in .all :stability.classes: .34 Page 33

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

LICENSEE: EXELON GENERATION COMPANY, LLC ' "

Table D - 1 Wind Speed by Direction Measured at, 30 Feet forVarious Stability Classes for the Limerick Generating Station, January- March, 2009 Limerick Tower 1 Period of Record: January - March 2009 Stability Class - Moderately Stable - 171Ft-26Ft Delta-T (F)

Winds Measured at 30 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7T 8-12  : 13-18 19-24' > 24 1 Total 6 2 0 0. 0 0 8 NNE 3 0 0 0 0 x 0 3 NE 7 0 0 0k 0 0 7 1ENE 0 0 0' 0' 0 0 10 E 6 1 0'" 0' 0 0 7 ESE 7 0 0 0. 0 ""0 7 SE 4 1"' 02 0 0 0 5 SSE 0 2 0' 0 0 0 2 S 2 5' 0. 01' 0 0 7 SSW 7 0 0' 0" 0 0 7 SW 5 1' 0 0 0 ' 0 6 WSW 5 0' 0 0 0 0 5 W " 1I7 2 0 0 0 0 13 WNW 14 5 0 0 0 0- 19 NW 8 1 0. 0 0 , 0 9 NNW 4 0 0 0 0 0 4 Variabl6 8' 0 0 0: 0. 0 8 Total 107 20 0 0 0 127 Hours of calm in this stability class: 3 Hours of missing wind measurements in thie stability class: 0

.Hours of missing stability measurements in' all"'stability classes: 34 Page 34

SITE: LIMERICK GENERATING STATION -. UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Wird Speed by Direction Measured at 30 Feet for Various Stability Classes for the W

Table D -- '1!

Limerick Generating Station, January- March, 2009 Limerick Tower I Period of.Record: January - March 2009 Stability Class - Extremely Stable - 17lFt-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 a 0 0 01 0 0 8 NNE 7. 0 0 0 0 :0 7 NE 9 0 0 & 0 0 0 9 ENE 5u 0.2 0 0 0 0 5 E 4, 0 01 0 0 0 4 ESE 2 0 0 0 0 0 2

SE 1 0 0" 0 0 1 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 1 0 0 0 0 0 1 WSW 3. 1 0 0 0 t .0 4 sWN

-W 14 0 0 0 0 0 14 16 0 0 0 0 0 16 WNW 9 0. 0 0 0 0 9 NNW 5 0- 0 0 0 0 5 Variablee 5 0 0 0 (1 3 5 Total 89 1 0: 0 0 -,.... 0 90 Hours of calm in this stability class: 17 ,.,, .

Hours of missing -wind measurements in this stabil4.ty class:_,. . 0 Hours of-missing. stability measuremtnts -in all stability.classes: ,34 Page 35

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

Wind Speed,by.Direction Measured at 175 Feet for Various Stability Classes for Table D.-2 the Limerick Generating, Station, January -:March, 2Q09 Limerick TowerJ .

Peritoc of-Record: January - March 2009 StabAility, Clas - Extremeqly Unstable - 171Ft-26Ft Delta-T (F)

-Winds Measursd .at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18, 19-24-.: > 24 Total N 0 - 3 ot 4 0-NNE a 0 0 0 0

0. 0 NE 0 0 0 0 0 0< >0

' ENE 0 1 1 0- *0 E

0 0' 1 0'

ESE 0 0k 0. 0: 0 0 0

SE 0-., 0 0' 0 0

.,SSE 0 1 0o, 0' 0 0

S. 0ý; 7 o

1. 9 0; 0 6r.

SSW 7 18 1 o.:,

0 0

0. 6 11
  • 0 WSW 0, 4-i 4 4 9
    • - : 0 1

W 0. 0 10 WrNW 0 5. 8, 11: 6 31 0, 0- 1 4! 0 5

'NW 0 3 0, 0 3 0Or

ýVariablo 0,' 0- 0- 0 Total 1 21 44 27 2 7 102 Hours of calm in this stability class: 0 Hours of missing wind mcaenrements in thir stability class: 0

'Hours of misaing stability measurements.in all stability classes: 34 Page 36

SITE: LIMERICK GENERATING STATION UNITS'1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D'-Z, " Wind Speed by Direction Measured at 175 Feet~for Various Stability Classes for the Limerick Generating Station, January - March, 2009 Limerick Tower 1  : -

Period of Record: January - March 2009

'Stability Class - Moderately Unstable - 171Ft-26Ft Delta-T (F)

-:'Winds Measured at 1.75 Feet

-':)Wind Speed (in mph)

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

1' 0'*. 0 -, 0 3 NNE 0 0' 0 - 0 NE ° 0' 0 0 0: 0 0 -0 1 " 0 , 0 -":0 1 ENE 0, 0 E  :

0" 0 0 0 0 0 0

'SES 0-. 0 0 0 0 0 0 SSE 0* 0 1 0 0 0 1 SSE 0" ox 0 0 0 0 0 0 S 0 1i 0 0 0 2 SSW 0 58 7: 1 2 ,; 0 18 SW 0 0o 0 0 0 2 0

0.;

WSW 0 1 0 **, 0 1 W 1' 5 3, 1 0 0 10 WNW 0 10.- 13" 3 2 33 NW 0' 1 6 12 4 1 24 NNW 0 , 3 2' 3* 0 'T*' 0 8

  • Variable 0- 01 0 0  : 0 0 Total " 1 28 ' 36-- 33 9,;ý " 3 110 Hours of calm in this stability class: - 0i Hours of missing wind measurements in this iStability class:" 0 Hours ofmissing stability measurements in all:stability classes: '34 Page 37

SITE: LIMERICK GENERATING STATION -UNITS1-I& 2' a.,

LICENSEE: EXELON GENERATION COMPANY,.LLC Table D- 2 - Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, January - March, 2009 Limerick Tower 1 .

Period of Record:,January - March 2009 Stability-Class - Slightly Unstable . - 171Ft-26Ft .Delta-T (F)

- Winds Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1 4-7: 8-12 13-18. 19-24  :> 24 Total N 1::- 3 12, 11 0 0 17

.NNE 0 3 11 0 0 0 4 NE 0 0 1 0... 0 0 1 ENE 0 0 '." 0 0 0 0 E 0 1 ,. 1 o- 0 0 2 ESE il 1i:

0. 0' 0 t0 2 SE 0 2. 0: 0'. 0 0 2 SSE 0 1 :, 0 0. 0 - 0 1 S 0 6'. 5 0 1 0 12 SSW 0 4-. 5. 1 0 0 10 SW 0: 1 4 0 0 0 5 WSW 1: 0, 2 2,, 0 0 5 W 0 3' 2 1. 4 5 15 WNW 2 0 7 15' 3 '4 31 NW 2 4 10 7 0 23 1 . 2 2, 6-2 3 0 14 Variable 0 0 0 0 0 0 0

-Total 5 29 47 36 18 9 144 Hours of calm in this stability class: 0:

Hours of missYing wind.'.eLfsuremerts in this stability class: 0

'Hours of.missiny stability measuremnents in all stability classes: 34 Page 38

SITE: LIMERICK GENERATING' STATION ,-'UNITS1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D -22 Wind Speed by Direction Mea'sued at 175 F1et for V arious Stability Classes for the Limerick Generating Sta.ii6i, January - March, 2609 Limerick Tower 1 '

Period of Record: January - March 2009 Stability Class - Neutral - l71Ft-26Ft Delta-T (F)

Winds Measured at.175 Feet Wind Speed (in mph)

Wind

  • .; Direction 1 4 .' 8-12 1. 13-18 19-24 : >.i24 Total N 6: 18, 24. 20 2 0 70 NNE 6r 12 11 2. 0 'a.. 0 31 o 0 NE 13, 21. 12' 0. 0 . 0 46 ENE 21: 18 0, 0 - 0 48 En 7 12 26. 8. 0 0 53 ESE 6 7 7 3, 0 0 23 SE 5 6 5" 1i 0 0 17 SSE 4. 7.. 22 4, 0 0 37 S 3 14, 32' 5 1 0 55 6; 14 19. 5., 4 0.0 48 SW 0 12'; 5' 0 o0 0 17 WSW 2. 6 4 2., 0 ,1 15 W 5 15" 10. 16C 15 9 70
  • WNW 5 17. 55, 92. 50 "16 235 NW 5.-t 19 40 61ý 30 5 160 RNNW 4,. 10, 45. 23: 9 '" 0 91 Variable 0. 0 0 0 0 . i'0 0 Total 86' 211 . 335 242.` 111 .... -31 1016 Hours of calm in this stability class: . 0:

Hours of missing,:wind measurements in this stability class: 0.-

Hours of missing stability:measurementsin all stability classes: .. '34 Page 39

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D.- 2 Wind Speed by Direction Measured at 175 Feet forVariousStability Classes for the Limerick Generating Station, January - March, 2009. --

Limerick Tower 1 Period of Record: January.- March- 2009

.Stability Class - Slightly Stable - l71Ft-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. 3 .' 6 1 0 0 11 4.') 3 ' 1 0. 0 0 8 NE 4 4' - 1 0 0 0 9 ENE 4 6 5 0. 0 0 15 E 6 2 5 ý' 0 0 0 13 ESE 3 5. 2. 0 0 ' 0 10 SE 4, 2. 4 2 0 0 12 SSE 3 6 20 4 0 0 33 S 2 8 , 261 8 0 0 44 SSW 1 20., 24 6 1 - 0 52 SW 1 16 14 4 1 0 36

  • WSW 01 17 4 6 3 1 31 W 5 21 . 20 6 3 0 55 4 32 ' 52 10 4 1 103 NNW 5 15 26 4 0 0 50 1 10' 22 1 0 '.1 0 34 Variable 0' 0 0 0 0 0 0

.Total 48 170 232 52 12 2 516 Hours of calm in this stability class: 1 Hours of missing wind measurements in this-stability class: 0 Hours ef missing stak-ility measurements in all stability.classes: -34 Page 40

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

LICENSEE: EXELON GENERATION COMPANY, LLC Table D- 2:i Wind Speed by Direction Measured at 175 Feet for-Various Stability Classes for.

the Limerick'Generating Station, January - March, 2009 Limerick Tower 1 -

Period of Record: January - March 2009 Stability Clads - Moderately Stable - 171Ft-26Ft Delta-T (F)

'Rinds 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: 4 0 0 0 6 0 0 0 NNE 2 0 3 0 0 0 NE 0 "

1 0 1 1 0 0 0 ENE 0 1 0 0 0 0 SE , 0 5' 6

!ESE 0 0 0 0 2; 5 SSE  : 0 0 0 6 0 6 SSE ' 2. 1 0 '-0 SE 6 ; 10 3 0 0 0 6 10 SSW 2 0 0 0 6, 2. 10 SW 2 0 0 0 5': 4. 11 WSW 2 7. 3 0 0 ' 0 12 W

1 5 2 " 2 0 0 10

WN

-wmq 12 1 0 0 20 NW 5 7: 2 0 0 ', 0 14 NNW 0 5. 0 0. 0 '0 5

'Variable 0* 0 0. 0. 0 Total . 24 71 , 31. 4 0 ,'.0 130 Hours of calm in this stability class: ,ý .0*

Hours of miscing -ind measurements in ttis stability class:. - 0 Hours of missing stability measurements in all stability-.classes: 34 Page 41

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

TableD - 2 Wind Spead by Direction Measured at.175 Feet"for, Various Stability Clk.sses for the Limerick Generating Station, January - March, 2009 Limerick Tower 1 Period of Pecord,:Jaz'aary - March 2009 Stability Class - Extremely Stable - 171Ft-26Ft Delta-T (F)

.inds Meaznured at 175 Feet Wir.d Speed (in mph)

Wind Direction 1-3 4-7 . -; 8-12 13-8IS 19-!:24'. -2"4 Total N 2 1 0' 0- 0 0 3 NNE1 1 0 0 0 0 . 0 1 NE 2 0 0 0 0 0 2 ENE . 6 3 0 0 0 . 0 9 E 0 0 0 0 - 0 4 ESE 3 3r 0 C 0 0 0 6 SE 2 1 0. 0" 0 *' 0 3 4 3' 0 0 0 . 0 7 2 3 0, 0 0 0 5 SSW SW 2. 7 0.- 0 0 .. 0 9 SSW 1 7 ' 4 0 0 13 WSW

  • ~WSW  : 2- 6 5 0 0 ,. 0 13 SW 1' 2' 1' 0 0 0 4 WNW 11 0 0' 0 0 12 NW 5.. 2 0 0 0 0 7
" 414W 'N 3- 3. 0 0 0 0 6 VariablC 21, 0 0 0- 0 0 0 2 Total  ; 43 52 ' 10 1 0 0 106 Hours of calm in this stability cltisr

Hours of missing, wind me&surrmentEA.-in this stability class: 0 Hours'of missinq stability measurements iu all stability classes: 34 Page 42

SITE: LIMERICK GENERATING STATION - UNITS 1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D -: Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, April- June, 2009' Limerick Tower 1.  :.z: -_

Period of Record: April - June 2009 Stability Class - Extremely'Unstable . - 171Ft-26Ft *Delta-T (F)

Winds Measured at Feet

.. Wind Speed (in mph)

Wind Direction 1-j-3 -.

4-7.,'- 8-12 13-18 19-24 ,. > 24 Total N 0 0 1. 0 0 0 1 NNE 0 1 0 0 0 0 1 NE 00 0 0 0 0 0 EN]Z o o 0' 0 0 0 0 E 0.ý 0
  • 0 0 0 0 0 ESE 0 - 0x 0 0: 0 0 0 SE " 0' 0 0 0 0 0 0 SSE' 0 0. O0 0 0 0 0 S 0 3 2 0' 0 0 5 SSW -" 0 11 2 0' 0 0 13 SW 0.: 8.. 0 0_ 0 0 8

.WSW 0' 5, 5, 0. 0 . 0 10 W 0 9; 6 " 0 0 15 WNW 0' 4 3 0 1 0 0,.. 8' NW 0ý 1', 011 Oc 0 0 1 0- 0 0.- 0 00 0 Variable 0! of. 0 0. 0 ..  ;. 0 0 Total 0 42 19 Of 1 62 Hours of calm in this stability class: 0..

Hours of missing wind.measurements in-:thi-s stability. class:..-, "0 .-

Hours of missing stability measurements in all stability classes:, 144

.Page 43

SITE: LIMERICK GENERAT!NG STATION -. UNTS 1 &2 LICENSEE: EXELON GENERATION COMPANY,. LLC - "' -.

Wind Speed by Direction Measured at 30 Feet for Various Stability Classes forthe Table D - 3 Limerick Generating Station, April -. June, 2009, Limerick Tower 1 Period of flecord:,%April - June 2009 Stability Class - Moderately Unstable - l7lFt-26Ft Delta-T (F)

Winds Measure. at 30 Feet WihA Speed (in mph)

Wind

',Direct4ion . 1-3 4-7 8-12 13-,18 19-,-24; >,24 Total N 0 1 0 , 1. 01 0 0 1 NNE 0 1 01 0. 0  : 0 1 NE 0 1 0;, 0 0 1 0

ENE 0 1 2. 0" 0 0 3 E 0 0' 0. 01 0 0 0 ESE 0 0, 0. 0:, 0 0 0 SE 0 0. 0: 0o 0 .: 0 0 SSE 0 0 0 <0 1 S 0' 3' 1. 0' 0 . 0 4 SSW 0'. 6' 0O 0.. 0 0 6 SW " 1. 3 0 0: 0 0 4

"'1WrSW 0, 4 4 05 0 0 8 W

2* 41 0 0 9

-Wq 0 5' 9 2,: 1 0 17 NW o0 1' 2 4 0 0 7 O. 2 0 0 0 '0 2 zVariabl6 0 0,; 0 0'* 0 0 Total 3 32. 21 1 <0 64 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of-missing stability measurements in all stability classes: 144 Page 44

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

3 Table D,-'3,. Wind Speed by Direction Measured at 30 Feet for:Various Stability Classes for the Limerick Generating Station, April - June, 2009 Limerick Tower 1 Period of Record:,'April - June 2009 Stability Class - Slightly Unstable l7lFt-26Ft Delta-T (F)

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

Wind Direction 1 4-7 8-12 13-18 19ý24. >,24 Total N 1 4 3 0' 0 0 8 NNE 0 3, 0 0 0 0 3 NE 1:. 2 0: 0 0 0 3 ENE 0 0 1. 0 0 0 1 E 2 5 0' 0 0 7 ESE 0 1 1 0' 0 0 2 SE 0 1 0. 0 0 0 1 SSE 0 4 0: 0 0 .. 0 4 S 0 6 3- 0.' 0 0 9 SSW 1 13 0, 0 0 '-" 0 14 SW 2. 8; i 0.' 0 0 11 WSW 3) 6 4 0 0 0 13 W 3 6 4: 0' 0 0 13 WNW 1 3 10 1 2 0 17 NW 0 7 7:, 3' 0 0 17 0 0 2 0 0 0 2 Variable 0 0' 0: 0.&1 0'. 0 0 Total 12 66 41 4 2 '0 125 Hours of calm in this stability class: - 0 v Hours of missing wind measurements,.in-this stability class:- ` ,0

.Hours of-missing stability, measurements in all Stability classes:-, 144 Page 45

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2', -4M:

LICENSEE: EXELON GENERATION COMPANY, LLC .

Wind Speed by Direction Measured at 30 Feet.,for Various Stability Classes for the Table D.- 3 Limerick Generating Station, April - June, 2009 Limerick Tower.: 1 Period of Record: April -, June 2009 Stability Class - Neutral - 171Ft-26Ft Delta-Tr (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 13 7 , 1 *0 24 1 "

NNE 6 16 0 23 0

NE 14 20 3 0 " 37

  • ' 0 ENE 13 24 8 0* 45 0

48 4' E 11 30 93 0

ESE 2 12 12 3 29 0

SE 4 9 0 13 0 0 0 .'

SSE 6 12 18

0 S 9 18 6. 2 35 0

SSW 6 22 2. 0 30

  • 0 SW 10 11' 2 23 0 , 0 WSW 12',: 15 0' 29 12 0 W 14 13 7 00 46

' 0 WNW 10 22 26 8 , 67

  • 0 NW 3 31.' 36 8., 78 0

8 18." 29 5 0 60

'Variable, 0 0" 0 0 0 Total 131 304 . 176 38 1 t  !, 0 650 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: 144 Page 46

SITE: LIMERICK GENERATING STATION - UNITS -1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D-3 Wind Speed byDirection Measured 'at 30 Feet for Various Stability Classes for the Limerick Geneeating Station, April - June, 2009 Limerick Tower 1 Period of Record: April-. June 2009 Stability:Class - Slightly Stable ,- 171Ft-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 20 16 4: 0 0 0 40 NNE 12 12 0 0 0 24 0

NE 26 29 0 0 56

'0 ENE 24 33 6 0: 0 S0 63 26 36 24 J,2, 6. 0 "0 92 SE

7. 19 7., 0 0 33 0

SE 6 18 0 0 25 20 12 23 5'> 0 0 40

>0 9 ..

S II 29 0 0 49 0

SSW 12 17 0. 0* 0 29 0

SW 23 12 3,ý 0" 0 "o 38

.0 WSW 23 11 0~ 0 36 W 27 17,: 11:" 3 0 58 w0 WNW 26 25,, 17 6 0 74

'0 NW 20- 23 15 0 59 NNW 9: 25 9. 3 0 46

,0 Variable 4 0 01'. 0;.. 0.'I 4 Total 288". 345 114 1 19 0 -0 766 Hours of calm in this stability class: . .8 -t -

Hours of missing wind measurements-in this stability;-class:. _, _ 0 Hours-of missing stability measurements inv:all stability classes: 144 Page 47

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

LICENSEE: EXELON GENERATION COMPANY, LLOC Wind Speed by Direction Measured at 30 Feet for. Various Stability Classes for the Table.D - 3 Limerick Generating Station, April 7.June,:2009 Limerick Tower 1 Period of Records::. April - June 2009 Stability Class - Moderately Stable - 171Ft-26Ft Delta-T (F)

Winds Measured -t 30 Feet

%..,-,.Winid Speed (in mph)

Wind Direction 1-3 .. 4-7 8-12 13-18 19-24 > 24 Total N 4 0- 4 o o* 0 1-0 0 0 " 0 NNE 3 4 0 0 0 0

. NE 2-. 2' 4 0 01 0 0 ENE 8 0.1 8 0 0 0 - 0 1E 3 1 4 ESE 3 2 5 0 0 0 0 SE 5 0'..' 5 0 0 0 ' 0 SSE 8 11 0, 0! 0 0 S 8 4 0 0> 0 0 12

,SSW 11 8: 0' 0' 0 0 19 1!: 0' 0 0 0 SW 12:' 13

0. 0. 0 0 WSW 15. 0. 15 W 26.' 3C 0 0. 0 0 29 WNW 291, 33 4,- 0 0- 0 0 NW 17;, 21 0 0, 0 0 NNW 8 0, 8 0 0 0 0 Variable 5 5 Total 167 33"' 0 0' 0 0 200 Hours of calm in this stability class: 12 Hours of missing wind measurements-in this stability class. .0 Hours of missing stability measnrements.-in all stability classes,: 144 Page 48

SITE: LIMERICK GENERATING STATION - UNITSI & 2 LICENSEE: EXELON GENERATION COMPANY, LLC '.

Table Cr,- 3:.r-i Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, April -:'.June, 2009..

Limerick Tower 1' -.

Period of Record::'April - June 2009

'Stability Class - Extremely Stabl-e l7lFt-2.6Ft Delta-T (F) 17"-

'Winds Measured at -30 Feet

.,Wind Speed (in mph)

Wind

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

  • N 5 0 0 0 0 0 5 NNE 3' 0 0 0. 0 0 3 NE 7. 0, 0, 0 0 0 7 UENE 4, 0 0. 0 - 0 . 0 4
  • E " 2. 0 0. 0 0 0 2 ESE ' 2" 01 0 0 0 '0 2 SE , 4,' 0 0 0. 0 0 4 SSE 2- 0 0, 0, 0 .0 2 S 3 0o 0: 0' 0 0 3 SSW 2* 0. 0 0.: 0 0 2 SW 6 0' 0! 0 0 " 0 6 WSW 6. 01- 01 0 0 ' " 0 6 W 13' 0' 0 0n'f 0 0 13 WNW 22 4, 0 0 0 ' 0 26 NW 31' 1 0, 0' 0  ;. 0 32 NNW 14 0- 0 0. 0 ,<0 14 Variable 10 0-00,O 0 'n-0 10 Total 136 5 0". 0 0 , 0 141 Hours of calm in this stability class% ý12 *'

Hours of missing wind measurements in this stabilityclass: 0.

Hours of missing stability measurements in all stability .classes:..-144

..Page 49

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

LICENSEE: EXELON GENERATION COMPANY, LLC'. .' -:-

Wind Speed by Direction Measured at 175,Feet for Various Stability Ciasscs for Table D - 4 the Limerick Generating Station, April - JJune, 2009 Limerick Tower I period of Record: April .- June 2009 Stability Class - Extremely Unstable,- - l7lFt-26Ft Delta-T (F)

Winds.Me.sured at 175 Feet

ý.,Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24", > 24 Total N 0 O. 0O 1: 0 0 1 0'.

NNE 0.: 1", 0.' 0 0 1 NE 0 0. 01 0' 0 0 0 0

ENE 0 0 0, 0 .0 0 E 0i; 0 0: 0! 0 0 0 ESE 0": 0 O ., ,0 '* 0 0 0,ý 0" 0 0 SE 0 0' 0" 0:: 0 0 0 SSE 0 0 0 0 0 S 0 1 .1.1 0 .. 0 0., 1 SSW Sw 0, 2- 11, 2 0 0 15 SSW 0.1 2,: 6.. 3': 0 0 9 0'

4. 9_ 0 0 15 2*:

W 0!

6' 4 1 0 13 WNW 2., 1- 1 1 1** 6 0'.

NW 0ý 0. o0 0 0 0,

NNW 1 0 0 0 0 1 0

Variable 01 0 0 0., 0 0 Total .- 0 8' 31. 20 2 1 62 Hours of calm in this stability class: . 0 Hours'"of missing winid measurements in this stability class: 0 Hours cf-nissing stability mewasurements,.in allstability classes: 144 Page 50

SITE: LIMERICK GENERATING STATION.-'UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table DI1z. 4"..,9/'. .: Wind Speed by Direction Measured at 175 Feet for Various'Stability Classes for the Limerick Generating Station, April - June, 2009 Limerick Tower!,1 Period of Record:April - June 2009 Stability Class - Moderately Unstable - 171Ft-26Ft Delta-T (F)

.. Winds Measured at..175 Feet Wind Speed (in mph)

Wind Direction iA3 . 4-7 8-12 13-18 19-24 > 24 , Total N 0' 0 1 0 2 NNE 0 1 0a. 0 2 NE *v 0 0 0 0 ENE 0 2 0 0 2 E 0. 0' 0 0 1 ESE ' 01 0 0 0 0 SE 0' 0 0 0 SSE 0' 0 0 0 S 0, 2-1 0 0 2 0':

SSW 0" 4 or.* 0 7 Sw 31) 0-: 0 5 WSW

2. 4**, W" 0 9 0 2. 6, 1/2 2 16 WNW
0. 7 2, 14 NW 0 0:. 0: 0 3 NNW S0 0"; 0: 0, 1 Variable 0o 0. 0 0 Total  :' 1 17 23 13 7 .%3 64 Hours of calm in this stability class: 0 Hours- of missing'wind miasurements-in this stability~class:., 0-'*

Hours of missing:stability measurements in.all stability classes: 144 Page 51

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

LICENSEE: EXELON GENERATION COMPANY, LLC 7: [4 Table D.- 4,- Wind.Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, April - June, 2009 Limerick Tower 1 Period of Record: April - June 2009 Stability Class - Slightly Unstable - 171Ft-26Ft: Delta-T (F)

Winds Measured .at :175 Feet Wind Speed (in mph)

Wind Direction 1-3 - 4-7 8-12 13-18 19724 * > 24 Total N 0 1. 2 3 .0 6 NNE 0 6ý 0 ' 6 1 0 NE 0 0.. 0- 0 1 ENE 1 0 1.2 0 2 0

E 0 0 7, 0 7

-~0 ESE 0 0 0-* :0 1

SE 0 1'. 01 0i '0 1 SSE 0 1' 2 0 3 S 0 3r 2, 22 0 7 SSW 0. 3 9. 0 13 SW 0 7 7. 0 15 WSW 0 4. 4 5 0 13 S 0 W 0. 3" 3 6 14 WNW 2' 4 7 6 2 23 NW 0 1i. 8." 0 0 11 NNW 1 0 1. 0' 0 2 Variableý 0 0 0, 0 " "0 0 Total - 4 34 54 25 6 2 125 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability.measuraments in all stability classes: 144 Page 52

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

Table D-Y.,--.* . Wind Speed-by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, April - June, 2009 Limerick Tower 1 Period of Record: April - June 2009 Stability-Class - Neutral - 171Ft-26Ft Delta-T (F)

Winds Measured a,--- 175 Feet Wind Speed (in mph)

Wind Direction 1-3 7. 4-7 8 13-18 19-24." >' 24 Total N 2 6 14 9 1 0 32 NNE 5- 13 4 1 0 0 23 NE 6-" 21 11 0 0 0 38 ENE 5 16 7 2 0 0 30 E 8.' 30 31 17 0 0 86

" ESE 1 12 19 13 3 48

  • 0 SE 2 5 7 0 0 14

-0 SSE 4'" 9 7 0 - 0 20 0

S 2 8 10 4 2 26 0

" *0 SSW 4 10 17 10 0 41 0

SW 3 7 7 7 . 0 24 0

WSW 7 9 9 5 2 32 W 5 11 13 13 6 6 54 WNW 5 17 23 14 16 4 79 NW 3- 4 25 13 5' 0 50 NNW 0 12. 22 19 0 0 53 Variable 0 0 0 0' 0-*

0 Total 62 190 226 " 127: 35 ..10 650 Hours of calm in this stability class: '. 0:

Hours of missing'wind measurements in this. stability. tclass:

  • 0 Hours ,of missing stability mea'surements-in all'stability classes: 144 Page 53

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

LICENSEE: EXELON GENERATION COMPANY, LLC . .'

Table D -4 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, April - June, 2009 Limerick Tower 1.

Period of Racord: A;ril .. June 2009 Stability Class - Slightly Stable -. - 171Ft;-26F.t Delta-T (F)

Winds X*easured a:t 175 Feet

..... IWind ,Speed (in mph)

Wind Direction- , 1-3, : 4-7 - 8-12'- 13-18 19-'24.1- > 24 Total N 8 6 25 3. 0 0 42 NNE 8 11. 9 0. 0 0 28 NE 12 20 14' 0 0 0 46

'ENE 12 38 17 1; 0 0 68 E 8 25' 34 11:" 4 0 82 ESE 5 20 21 14 0 0 60

  • SE 3- 6' 14.- 3"' 0 0 26 SSE 4. 8' 23 2 0 0 37

.S 4 15' 25. 9 0 0 53 SSW 2 12 15 9.: 0 , 0 38 SW 3. 17 23 4 0 0 47 WSW

  • 3- 13: 9 2 3 0 30 W 8 13 21 10 4 3 59 1WNW 2 21 24: 19,ý 9 1 76 4-, 99-NW 16' ; 4 0 '0 33 0 NNW 3 14 192- 10. 3 . 0 49 Variable:, 01 0" 0 0; 0 0 0

" Total 89' 248' 309 101 23 4 774 Hours of calm in this stability class: 0 Hours of missing wind..measurements in this'.:stsbility class: 0

Hours of missing stability measurements -in all stability classes: 144

.1Page 54

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

Table D:-4. : Wind Speed by Direction Measured at 1:75,Feet for Various Stability Classes for the Limerick Generating Station, April 'June, 2009 Limerick Tower 1`' ' -

Period of', Record: "April - June 2009 Stability Class - Moderately Stable - 171Ft'-26Ft Delta-T (F)

Winds Measured rat 175 Feet Wind. Speed (in mph)

Wind Direction l-3 4-7.  : 8-12 -: 13-18 19-24 > 24 Total N 4. 2 0 0 0 0 6 NNE 2" 0' 0: 1 1 0 0 3 NE 2 3' 2 0 0 0 7 ENE 3 2 ' 0'? 0 0 0 5 E 0-- 2 0 0 0 2 ESE 3 1' 0 0 6 0

SE 0 0 0 0 5 0

SSE 3' 3"' 0 00 6 S 1 7 . 1 /

10' 0 0 ' 0 9 SSW 1 10' 4 ~ 0 30 25 SW 3* 16, 12. 0 '0 32 WSW i' 10, 4.' 0 0 16 W 1 ' 14 4 0 '0 19 0~

WNW 3" 19. 12 0 0 34 0,

NW 3X 12 -; 10:_ 0 O0 25 0

NNW 3:1 6'. 2 P 0 . 0 11 0'

Variable 1i 0:, 0( 0; -. 0 1 Total 39. 108 57 ". 8 0  ; .: , 0 212 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 stabilityclasses:. 144 Page 55

SITE: LIMERICK GENERATING STATION UNITSI& 2 ' -: -

LICENSEE: EXELON GENERATION COMPANY, LLC .

Table D -. 4 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for..

the Limerick Generating Station, April - June, 2009 Limerick Tower 1 -. -

Period':of Record: April ,- June 2009 StabilityClass - Extremely.Stabl -..... 171Ft-26Ft Delta-T (F)

WindsN!Neasu.ed at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 , 13-18 19-24 >24 Total N 0 3 0 o o 0 3 NNE 2 1- 0 0, o0 0 3 NE 1 2 0 0ý 0 0 3 ENE 0 3 0i 0 0 3/4 0 3 E 5 1 2 0ý 0 0 8 ESE 1 1- 01 01o 0 0 2 SE 1. 2 0, 0 0 3 0

SSE 0. 0: 0 0, 0 0 0 S 1- 4;. 0 0o 0 0 5 SSW 3 11' 0 0- 0 0 14 SW 2 6 4 0 0 0 12 WSW 5 6 0 0* 0 0 11 NW 4- 14" 1 0 0 0 19 WNW 4 22 12. 2 0 0 40 NW 5" 12- 6 0 0 0 23 SNNW 1 2 0 0. 0 0 3

%.'Variable 0' 0 01 0 1 0

I--

Total 36 90 25 2 0 0 153 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability-measur.aments in'all stability classes: 144

. Page 56

SITE: LliMERICK GENERATING'STATION,--UNITS1 &2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 5 ., Wind Speed by Direction Measured at 30 Feet for Various Stability Classesfor the Limerick Generating-Station, July - September, 2009 Limerick Tower 1 Period of-Record: July - September 2009 Stability Class Extremely Unstable - 171Ft-26Ft Delta-T (F)

Winds Measured at" .30 Feet Wind Speed (in mph)

Wind .

Direction 1-3 4-7 . 8-12 13 19-24 > 24 Total .

N -:I-, 10, 3 0 0  :* 0 14

-NNE 0.: 17' 2 0. 0 0 19 NE 1. 23.' 1 0 0 0'0 25 ENE 2, 14 3 0 0 - 0 19 E 3', 3 0" 0.J 0 0 6 ESE 3 2-:" 2 0 0 0 7 SE 2. 2 0; 0- 0 0 4 SSE 0 2- 0 0' 0 0 2 S 3 9: 2 0. 0 0 14

.SSW 7 18" 1- 0i 0 '. 0 26 SW 6 19' 1 0'. 0 -' 0 26 WSW 8 15' 2- 0.,, 0 0 25 W 7 37.. 2-` 01 0 0 46 WNW 3' 25 5 0.: 0 0 33 NW 1 18' 9. 0 0 0 28 NNW 1 5 0. 0 0 '.-'o0 6 Variable 1 0 0 0 0 0 1 Total 49 219 33 0 0 0 301 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: 14 Page 57

SITE: LIMERICK GENERATING STATION~- UNITS 1 & 2 ' ,

LICENSEE: EXELON GENERATION COMPANY, LLC .-. -

Table D -- 5. Wind Speed by Direction Measured at 30 Feet for Variois. Stability Classes for the Limerick Generating Station, July - September, 2009 . -..

Limerick Tower 1

,Period cf Record: July - September 2009 Stability Class'- Moderately Unstable. - 171Ft-25Ft Delta-T (F)

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

Wind Direction 1-3 4-7 8-12 13 19-24 >. 24 Total N 2 2 01. 0 0 4 NNE 0 2. 0 0.' 0 2 NE 1 7. 4 0. <0 12 ENE 0 . 0 4 E

0. 2 0 0: 0 2

.ESE 0 0 1 SE 0 1 . 0', 0 2 SSE 0

  • SSE 0 1 ' 0. 0 1 0

1 : 4 12 i**.00 Sw 1' 0 02 0 1 2 2 0 0 4 WSW 0 SW 5 0. 0 6 1: '0 6 0~  : 0 9 WNW 0 1 -, 14* 5 0. 20 NW 0 2 14 .. 9 0 25 0

NNW 3 2 0 0 5

,Variable" 0' 0 0 0 0

, Total 24 55 22 1 0 0 102 Hours of calm in this stability class:

Hours of missing.wind measurements in this stability class:,

Hours cftmissing stability measurements in all stability classes: 14

- Page 58

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

Table D' E- Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, July - September, 2009 . ,

Limerick Tower 1 Period of Record: July.- Septembe r 2009 Stability Class - Slightly Unstable - 171 Ft-26Ft! Delta-T (F)

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

Wind Directicn . 1-3 4-7 8-12 , 13-18 19-24 > 24 Total N 2 3 0 0' 0 5 1 ' 7, 0 8 0

NE 0 6 0 7 ENE 1,

0. 7 0. 0' '0 7 E " 1 2: 0 "0 4 ESE 1 "% 0 0' 0 1 0

SE 2 0 0' 0 2

..SSE 1 0 '0 0 5 0:

S 1 2 0' 3 SSW 0" 5., 1 0 0.0 6 SW 3 5 0 0. 0 8 WSW 4 8 0 0" 0 12 W 7. 3 0. 0 0 10 WNqW 3, 7 1 0 00 11 NW 2 14 17 0 33 0

NNiW 1. 0: 1 0. 2 Variable 0 0 0' 0 0 Total 33 69 22 "* 0 0 0 124 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: 14 Page 59

SITE: LIMERICK GENERATING STATION - UNITS1 & 2 T-.n LICENSEE: EXELON GENERATION COMPANY, LLC Wind Speed by Direction Measure', at 30 Feet foroVarious Stability Classes for the Table D-- 5,-

Limerick Generating Station, July .. September, 2009 Limerick Tower. 1*

Pcar.od-of RecordI: July - September 2009 Stability Class - Neutral', *. -171Ft-26Ft Delta-T (F)

Winds yeasuripf. at 30 Feet

,,:Wind',Speed (in mph)

Wind

'Directioton:., 1-3 .,- 4-7_ 8-12 13-1.8: 19~-!24* > 24 Total N 13' 18 2 0 0 33 NNE 12: 19 12' 2- 0 45 NE 10 17 1 .] 0--. 0 28 0 :.

ENE 7 36: 3 0'. 70 46 E 8 24 4 '?3. 0 ..:" 0 36 ESE 2,," 7 0;:, 0:. 0 9 SE 0.1 0 0 0 2 SSE 7 2,3 0.. 0, .0 9 S 7.. 5 "i 0. 0 15 SSW 4 13 0 0 18

Z." 0 SW 13.. 7. 0- 0 0 20 WSW 16 7 0 0; 23 0

W 11i. 12 3 0 26 0

WNW 12., 19 5 0 36 0

18, 35 18i 10 72 0

NVW 18i" 6 0o 0 24 0

variable 0', 0 0 0 0

.* Total . 160 227 52 3 0 0 442 Hours of calm in this stability ciasst i0 7 Hours of missirgiwind measuroimenta ini this stability class. 11 Hours of .missing'stability measurements in all stability classes: 14 Page 60

SITE: LIMERICK GENERATING STATION - UNITS 1 '&2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D -"5 - Wind Speed by Direction Measured at 30.Feetfor Various Stability Classes'for the Limerick Generating Station, July - September, 2009 Limerick Tower 1 -

Period of' Record: July'.- September 2009 Stability Class - Slightly Stable: 171Ft-26Ft .Delta-T (F)

Winds .Heasured at 30 Feet

'Wind Speed (in mph)

Wind S.Direction-- 1-3. 4-7 ý ' 8 13 19-24. -,., > 24 Total N 21 6 0. 0 0 0 27 NNE 26 19 0 0 0 46 NX 33 10 2 0 0 0 45 ENE 24 14 2 0 0 40 0

E 15 16 41 0 0 35 0

ESE 7 5 0' 0 12 0'~ 0 SE 7/ý 3 0. 0 10 0' o SSE 9': 191" 0 0 0 28 0*

9 29 0'/

S 0 38 0' 0 SSW 17": 134 0 30 07' 0 0'

S 0 SW 18 0 20 0

WSW 30' 62. 0 .0 37 0:;. *0 W 46 241" 0 71 0

WNW 60" 37 0~ 02. 0 97 0

NW 18. 5.'- 0 57 34 O' 0 NNW 34 8 0 43 0;

variable 2 0" 0 2 Total .- 392 229 17 . 0 O' 0 .-. 1., 0 638 Hours of calm in this stability class: 9' -

Hours of missing wind measurements in this stalbility class:- ':33 Hours of missing stability measurements in all stability classes: .14 Page 61

SITE: LIMERICK GENERATING STATION -- UNITSI 1 & 2 .  ; rv,. 7, LICENSEE: EXELON GENERATION COMPANY, LLC - -

Wind Speed byDirection Measured at 30 Feet for Various Stability Classes for the Table D- 5.

Limerick Generating Station, July - September, 2009 Limerick Tower 1 ,."-' : .....

.Period of Record: July - .Septembe r 2009 St&bility Class - Moderately Stable " -. 171 Ft-26Ft Delta-T (F)

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

Wind DirectiOnýý 13 4-7 12-- 13-18 ý 19-24  :> 24 Total N 8 1 0 0-ý 0 9 NNE 6 1

  • 0 0 0 7 NE 6 0* 0 0 6 ENE 7 1 0 0 0 8 E 3 0 0 0 3 ESE 4 1 0 0 5 0

SE 3 01' 0 0. 0 3 SSE 3 0- 0 0 0 3 S 41 4 0 0- .0 8 SSW 9 2 0 00 0 11 SW 14 0' 0 0.

0 0 14 WSW 20 0'; 0 0 0 20

.W 44 2 0 0* *0 46 63 3 0 0 .0 66 WNW 43 3., 0 0. 0 46 20 0 .0 21

-Variable 5 0 0 .0 5

,c Total 262 19 0 0 0 0 281 Hours of calm in this stability class: 14 Hours of missirg wind measurements in this stability class: 25 Hours of missing stability measurements in all stability classes: 14

.Page 62

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC' Table D -,5 .:::' " Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for-the Limerick Generating.Station, July - September, 2009.

Limerick Tower 1 Period of Record: July .-. September 2009 Stability Class - Extremely Stable., - 171Ft-26Ft .Delta-T (F)

Winds .Measured at ,!30-Feet

- Wind,.Speed (in mph)

Wind Directicn 1-;3- 4-7'7 8-12 13-18:. 19,24 > 24 Total N 16 0 0 0' 0 0 16 NNE 4 01 0.: 0 0 0 4 NE 4 0 0 0 0 0 4 ENE 5" 0 0.- 0 0 0 5 E 1 0 0 0 0 0 1 "ESE 2 0 0" 0", 0 0 2 SE 0 0 0o 0 0 0 0 SSE 1 0. 0 0' 0 ,. 0 1 S 1 0 0 0. 0 0 1 SSW 4: 0' 01 0 0 0 4 SW 8 0 0 O1 0 0 8 WSW 4 0. 0 0'. 0 0 4 W 16 1 0. 0 0 0 17 WNW 33 1 0' 0 0 '.0 34 NW 29. 0 0 0 0 0 29 NNW 34 0 0 0" 0 .0 34 Variable 4 0 0 0:' 0' .,: ,,0 4 Total 166 2 0 0 0 0 168 Hours of calm in this stability class: 24 Hours of missing wind measurements in this stability class: " 3 Hours of missing stability measurements in all :stability classes: 14 Page 63

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 "

LICENSEE: EXELON GENERATION COMPANY, LLC.

Table D- 6 Wind Speed by2Direction Measured at 175 Feet for-Various Stability Classes for the Limerick Generating Station, July - September, 2009.

Limerick Tower 1-Period of Record: July - September 2009 Stability Class - Extremely Unstable,' - 17lFt-26Ft .Delta-T (F)

-Winds Measured'at 175 Feet

. ... . 1...

.- Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18, 19-24  : >.24 Total N 5 5 , 0 0 10 NNE 101 12 0 0 22

  • NE 19< 7. 0 0 27 7-1 ENE 9. 0O 0 17 E 3 6 10 9 0,

ESE 1 1 2 0

SE 1 0 3 6 0

.SSE 3 1 6 1; 0

'S 3, 2 11 13 SSW 6 16ý 0 24 8 1 SW 8;., 0 20

  • *0 WSW 11. 9 2..

0 25 W 15 29 12' 0 58 10 12 1 00 26 NW 4. 12. 0 0 17 2ý 0. 0 4 Variable 0 0 0.: 0 Total 20. 109 129 21, 5 . 0 284 Hours of calm in this stability class: 0 Hours of missing windmeasurements in this stability class:. .26 Hours of missing stability measurements in all stability classes: 14 Page 64

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

LICENSEE: EXELON GENERATION COMPANY, LLC -

Table D.',-,6 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, July - September, 2009.. '

Limerick Tower 1' Period of Record: July-- SeptemLer 2009 Stability Class - Moderately Unstable - l7lFt-26Ft Delta-T (F)

Winds.:Measured at 175 Feet WindSpeed (in mph)

Wind Direction' 1-3 4-7 8-12 13-18' 19-24.. > 24 Total N 0 0* 0' 0 0 1 NNE 0 3, 0 ;; 0 0 0 3 NE 01' 4.ý 3 0 0 0 7 ENE 01 6 3 0 0 .0 9 E 10. 1I 1. 0 0 0 3 ESE 0 0 0 0' 0 0 0 1.--

SE 0. 1 0.. 0 0 2 SSE 0 0, 0 0 0 0 00 0

S 0 3 2- 0 5 0

SSW 0 0. 1 1! 1 3 0

SW 0 0 3: 0 0 3

., 0 WSW 0 3 0~ 0 5 W 4 5 4

'0 15 2

0 WNW 4 7 8:- 2.. 0 21 0

7" NW 2 12 0 0 21

.0 NNW 11 2: 2 0 0 5 Variable 0 0 0 0 0- 0 Total 9, 42 40 9r 3 0 103 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: -14 Page 65

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

LICENSEE: EXELON GENERATION COMPANY,. LLC' - -

Wind. Speed by Direction Measured at 175 Feet for Various Stability Classes for Table D-.6 the Limerick Generating Station, Juiy;-September, 2009: -..

Limerick Tower, 1i.

Period of Record: July - September 2009 Sta.bility Class - Slightly Unstable - 171Ftý-26Ft Delta-T (F)

'. ý- Winds Measured at .175 Feet MWind Speed (in mph)

Wind

.Directiont 1-3. 4-7 , 8-12 . 13-18 19-2.4. >. 24 Total N 0 3 0 0 ". 0 3 to NNE 5. 1 0* 7 10 0 NE 0 5 5.-, 0~ ' 0 10 ENE 0 5, 0 " 0 0 5 E

  • 2 3 0.- 0 6 ESE 1 0 0 1 0 2 SE 3' 0-1 0 0. .0 3 SSE . 0 0 0 0 2 S 4 0 0' 0 4 SSW . 2' 3 4 2 0 11 i°, SW , 0 :;

1 . 5 0 0 6

-'" *WSW 5 6 0. 0 13 32, 3, 4 0 11 SWNW  : 3' 9 0 18

~NW 0 6. 14 2. 0 22

..... NNW . 0" 1* 1."

1' 0 3

.Variable 0 0 0 0 0 0 Total 15 7 49%;' 51 11 0 0 126 Hours of calm in this stability class:

Hours of missing- windmeasurements in this stability class: 4 Hours of missing stability measurements in all stability classes: 14 Page 66

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

LICENSEE: EXELON GENERATION COMPANY, LLC "

Table D Wind Speed by Direction Measured at 175,Feet forVai'ious Stability Classes for the Limerick Generating Station; July_ September, 2009.

Limerick Tower 1 .:-

Period of Record: July'- September. 2009

'Stability. Class - Neutral - 171Ft-26Ft ,Delta-T (F)

Winds 'Measured !t .t175: Feet

) I . Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12

  • 13-18 .: 19-24 > '.24 Total N 8 9i 6 0'* 0 23 NNE 5' 12. 14 9 0 40 NE 7 18?. 6' 5 0 38 ENE 26: 17 0 0 50 E 5 - 11 21' 1:" 0 38 ESE 5. 9 3 0 18 SE 4: 1! 4; 0 0 9 SSE 0 41; 0: 0 5 0.-:

S 6* 5 0'" 12 5! ,.0 SSW 6, 10 61 28 0

SW 2 15 2 0.. 19 0

WSW 5' 5 7 2-. 20 0

W 11 91" 7 6 34 WNW 6 13 16 10-, 0 45 0

NW 3 11 20: 7" 41 0

NNW 8 11. 10 0. 20 0

Variable 0 0, 0` 01. 0 Total , 79 161 146 "_ 49 5 . 0 440 Hours of calm in this stability class: -0 Hours of missing wind measuremexits in~this .stability.-.clas&: -.13-'

Hours of missing stability measurements in-all stability.classes: 14 Page 67

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 "

LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 6 -Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, July - September, 2009 Limerick Tower 1

.,.'Period of Record: July - September 2009

-Stability Class - Slightly' Stable - 171Ft-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 14 17 9 1 0 0 41 NNE 10 18 9 4 0 0 41 NE 12 18 15%. 2 0 - 0 47 ENE 8 18 9' 0 0 " 0 35 0

E 6 13 17 4 0 40 0

ESE 5 3 8 2 0 18

0 SE 8 5 6 0 0 19 4 i 0 SSE 14: 6 0" 0 24 S 1 18 40 3 0 0 62 SSW 2 11 19< 2 0 0 34 SW 0 15 10 0 0 0 25 WSW 3 12 14 0" 0 0 29 W 6 11 36 6 0 0 59 5 46 45 4 0 0 100 WNW 0 8 30 22 0 0 60 5 16 4 0- 0 25 VarilNNW 0 Variable 0 " 0 0 0 0 0 0 Total 97' 265 269 28 0 0 659 Hours of calm in this stability class:

Hours of missing wind measurements in this stability class: 20 Hours of missing stability measurements in all stability classes: 14 Page 68

SITE: LIMERICK GENERATING STATION - UNITS 1 &2 .

LICENSEE: EXELON GENERATION COMPANY, LLC Table D.-6, .. Wind Speed by Direction Measured at 175 Feet for.Various Stability Classes for the Limerick Generating Station,, July - September; 2009 Limerick Tcwer 1-Period of,: Record: -July:- September 2009

,Stability Class - Moderately. Stable - - 171-Ft-2§6Ft 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 2 5ý 3 0 0 0 10 NNE 0 ,2 0 0 0 2 NE 2 3;, 0 0 0 0 5 ENE . 5 4 0 0 0 0 9 E 01 2 1 0 0 0 3 ESE 2 1- 0 0 0 S 0 3 SE 3 1' 0 0 0 0 4

.,SSE 2, 2 2 0 0 0 6 S 11 3 , 5 *i, 0.' 0 0 9

.SSW 4 2 4 1 0 ;0 11 SW 4 13 3- 0 0 0 20 WSW 2 15 4 1 0 0 22 W 4 21 3 0 0 0 28 WNW 7 52 30 0 0 .: 0 89 NW 11 29 3 0. 0 :0 43 NNW 10 13 4 0 0 0 27 Variable 0 0 0 0 0. .0 0 Total 59. 168 62 2 0 .20 291 Hours of calm in this stability class: i-.

Hours of missing wind measurements in this stability-class:. 28.

Hours of missing stability measurements in all stability classes-: 14 Page 69

SITE: LIMERICK GENERATING STATION -- UNITS 1 & 21 . >,

LICENSEE: EXELON GENERATION COMPANY, LLC '7., .. ' .

Wind Speed by Direction Measured at, 175 Feet for.Various Stability Classes for Table D,-,6 the Limerick Generating Station, July - September, 2009--

Limerick Tower 1 Period of Record: July - September' 2009

,Stability Class - Extremely Stable - 171Ft-26Ft Delta-T (F)

-,.Winds. Measured nt 175 Feet

. Wind :Speed (in mph)

Wind Direction 1-3 4-7 8 13-18 19-24 ,> 24 Total N 3. 3 1 0 0 0 7 NNE 0 2 0'; 0 0 0 2 NE 2. 3 1:, 0 0 0 6 ENE 1 3 0 0o. 0 0 4 E 4' 0': 0' 0 0 4 0"

ESE 3 0 2 0 0 5 2- 0 SE 0.:- 0 0 3

~SSE . 0.",

0':

0' 0oi 0 '0 0 0

0' 3' 0:" 0 '0 3 0

SSW 2; 4 2. 0 0 8 0

SW 3 4!' 2,', 0 .0 9 1 0 WSW 3' 8" 0 0 12

1. 0 W 6 14 ` 0 *0 21 0

WNqW 10 24. 0 "0 45 0

NW 6 24. 7 0 0 37 0

NNW 1 9, 1. 0 0 11 0,

Variable 0 0 0 0 0 0 Total 46 102 29 0 0 0 177

. j..

'Hours of calwn in this stability clasn: 0  : '

Hours of missing wind measurements in this stability class: 18 Hours of missing stability measurements in all stability classes: 14 Page 70

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 7.-), Wind SFoeed by Direction Measured at. 30 Feet for Various Stability Classes for the Limerick Generating Station, October - December, 2009 Limerick Tower 1.

Period of Record: October -December2009 Stability-Class - Extremely Unstable - l7'Ft-26Ft.;Delta-T (F)

Winds Measured'at 30 Feet

.'Wind Speed (in mph)

Wind Direction 1 ." 4-7 8-12 13-18 . 19-24 > 24 Total N 1 0 0 0 0 0 1 NNE 2 2 0 0. 0 0 4 NE 1' 0 0- 0 0 2 ENE 3 2 1 0 0 0 6 E 4! 12 2 1 0 <0 8 ESE 0 0' 2 0 0 0 2 SE 2 1' 0' 0 0 0 3 SSE 1~ 1 0 0 0 0 2 S 0 6 0 0 0 0 6 SSW 1. 8 1 0 .0 10 sw 1 1 0 0' 0 0 2

  • WSW 5 4 0'*, 0 0 0 9 W 6 9 3'; 21 a 0 20 WNW 3 15 10'- 2' 0 10 30 NW 2 4 10 "14" 3 0 0 19 NNW 1 1 0,' 0 0 0 2 Variable 0 0 0" 0 0 ~0 0 Total 31 59 28 8 0 0 126 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: 11 Page 71

SITE: LIMERICK GENERATING STATION -- UN!TS 1 & 2 -'.

LICENSEE: EXELON GENERATION COMPANY, LLC -

Table D -. 7 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick .Generating Station, October - December,.2009 :,.':"

Limerick Tower 1 S.Percid of Record: October.- Decnber2009

..StabiUity Class - Moderete.ly:Unutab.71e - 171Ft-2,GFt Dolta-T (F)

Winds meac*red-at ,-30VFeet L,:*, Wind Speed (in mph)

Wind Direction 1-3 1"4-7' 8-12 13-3.8 19-:74 -> 24 Total NN 0 0' 1 1. 0 2 NNE 0 1 0 0 1

,*NE

0. 2 0 0: 0 2 ENE i:,. 0. 0 1 "E 1' 0 0, 1- 3 ESE
  • 0
0. 0; 07 0' 0 SE 0 0 0.. 0 0 0 SSE '0 01' 0': 0 . 0 1 S 3." 0 0,; 0 3 3 0 0ýý 4 SW 0 0.. 0 0; 0 0 '0 WSW 0' 0. 0 K.. '00 W 3 A" 3 4 10
01. 0 WNW 6ý; 11 7T 24 0

NW 2 3 5- 2 15 1". 1 2 0 -0 4 VNariable 0 0O 0. 0- 0 0 Total 5 24" 23 15' 3 0 70 Hours of calm in this stability class: 0>.

Hours.of misEing-wirhd n~eaw-srements in this stability class: 1.

'Hours. f missing stability measureraezts in all stability classes:- 11 Page 72

SITE: LIMERICK GENERATING STATION UNITS 1 & 2 -

LICENSEE: EXELON GENERATION COMPANY,'LLC Table D.-7..', 'ý Wind. Speed by Direction Measured at 30. Feet for Various Stability Classes for the Limerick Generating Station, October - December, 2009 -

Limerick Tower 1 .

.Period of Record:.October - Deceaber2009 Stability Class - Slightly Unstable.'- - 171Ft-26Ft'Delta-T (F)

  • Winds Measured at' 30 Feet

.:,.Wind Speed (in mph)

Wind

  • .Directilon-. 1-3 4-7 " 8-12, 13-18 19,-24 *> 24 Total N 2 3 1:r1 1 0 0 7 NNE 1 1'- 0. 0 0 0 2 NE 4 2' 01 0 0 - 0 6 ENE 1 5 5' 0 0 0 11 2; 3! i' 0 0 0 6 ESE 1 2 0 0 0 0 3 SE Oý. 0"I o0: 0 0 0 0 SSE 10 01 V 0 0 1 S 1 2. 2,: 0. 0 0 5 SSW 0: 20, 00! 0 - 0 2 SW 1 0 0K. 0 0 0 1 i,

WSW 1- 1:, 0 0 0 3 W 3 10. 4 0' 0 '0 17 1 7:': 9 2'-- 0 0 19 NW 1- 3 10:- 9- 1 ... 0 24 NNW 0 4 1ý 0, 0 0 5 Variable 0 0' 0. 0 1 '0 0 Total 20-- 45. 34: 12' 1 0 112 Hours of calm in this stability class: 0 - - -

Hours of missing wind measurements in this stability class:  :

Hours.of missing stability measurements-in all stability classes:, 11 Page 73

SITE: LIMERICK GENERATING STATION - UNITS.1 & 2 LICENSEE: EXELON GENERATION COMPANY, 'LC Table D - 7 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, October - December; 2009 Limerick Tower*-1 ,

Period of Record: October - December2009

,Stability Class -1Neutral . - l7Ft-26Ft Delta-T (F)

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

Wind Direction 1-3 4-7 8-12 -. 13-18 19-2.4 pt.> 24 Total N 7 35 6 0 , 0 48 NNE 13 52 33 0 ,: 0 98 NE 12 39 29" 2.. 0 82 ENE 18 46 17 1 0 82 E 6 16 33', 3 0 58 ESE 9 4 2* 0' '0 15 SE 4 6 0 0 , 0 10 SSE 7 17 1 0' 0 25 S 4 13 , 6 0- 0 23 SSW 6' 9 5. 0~ . 0 20 SW 4 . 7 0 0 0 11 WSW 10 3' 4 0- :0 17 W 16 28 23 5, 0 72 WNW

  • 16 39 48 21.. 0 124 NW 9 21 63 27
  • 0 123 NNWV a 13 21 11 1 '0 46
variable 0 0 0 0 '0 0

-: Total . 154 356 281 60 3 0 854 Hours of calm in this stability class: 6 Hours of missing wind measurements in this stability class: 13 Hours of missing-stability measurements in all stability classes:' 11 Page 74

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

Table D-Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station,. October -.December;,2009 Limerick Tower 1 Period-of Record: October- 'December2009 Stability Class - Slightly Stable ,' - 171Ft-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 14 0i, 0 0 0 27 NNE 11 9. 4 0. 0 0 24 NE 11 15is 3- 0 0 0 29 ENE 15 15 " 5 0 0 0 35 E 8 6: 5 c 0 0 . 0 19 ESE 8-'. 6 5 1 0 0 20 SE 5. 8. 2c 0 0 0 15 SSE 2 17 4' 0 0 0 23 S 4 18 1 01 0 0 23 SSW hii 8 1 0",, 0 0 20 SW 12 7 0 1, 0 0 20

.WSW 221 10 2. 0 0 0 34 W 38 34 10. 0 0 0 82 WNW 21, 61:tý 21,ý- 0 0 0 103 NW 16 22 15 . 0 0 v. 0 53 NNW 13 12 11' 0. 0 . 0 26 Variable 2, 0' O 0' 0 0 2 Total 212',: 262 79* 2 0 .. 0 555 Hours of calm in this stability class: .8 J.

Hours of missing wind measurements in this stability class: 17, Hours of missing stability measurements"in all.stabi'lity 'classes: 11 Page 75

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

Table D -. 7.-!_ Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick.GeneratingStation, October - December, 2009 Limerick Tower . " '

.,.Period of Record: October - December2009 Stability Class - Moderately Stable: - 171Ft-26Ft Delta-T (F)

. 'Winds Measurae,:Cat %30 Feet Wind.Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18. 19-24:., > 24 Total N 8 0 0 0 :0 8 NNE 6 3 0' 0 o0 9 NE 6 1 0 0 0 7 ENE 4 4 0 0 8 0

E 4 4 0 0 8 0-ESE 3 0. 0 0 3 0

SE 2 1 0. 0 3 0

SSE 3 0 0 -0 3 or 0$

S 8 1 0 '0 9 0

SSW 10 2 0 '0 12 0;

SW 6 0 0 7 0

WSW 17 0 0 0 0 17 W 35 2 0 0* 0 37 WNW 23 12 0 0' 0 35 17 3 0 0 0 20

,!NW 7 0 0 0 0 7

,Variable 1 0 0 0 *0 1

.0.: , .. Total 160 34 0 0 0 194 Hours of calm in this stability class: 5 -. , "

Hours of missing-wind measurements in this stability, class-:- 4 Hours of missing stability measurements in all stability classes: 11 Page 76

SITE: LIMERICK GENERATING STATION -- UNITS 1 & 2' LICENSEE: EXELON GENERATION COMPANY, LLC Table D - ý7.:, Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick GeneratingStation, October- December; 2009 Limerick Tower 1 Period of Record: October, - December2009 Stability.-Class - Extremely Stable '. ' - 171Ftt-26Ft Delta-T (F)

Winds :Measured at .30 ,Feet

.4 Wind Speed (in mph)

Wind Direction.' 1-:3 4-7 8-12 13-18 19-24t-" >,24 Total N 11 0 0 0 0 0 11 NNE 9,:' 0 01" 0' 0 "0 9 NE 8 0' 0 0 0 0 8 ENE 2: 01 0 0 0 2 0

E 3., 1.! 0 0 0 4 0

ESE 2 0 0 0 0 2 0

SE 0: 0' 0 0 0 0 0.

SSE 12 0 0 0 0 1 S 0 0 0. 0 ~0 1 SSW 2, 0 0.. 0"' 0 00 2 SW 5, 0 0 0~ 0 0 5 WSW 12, 0 0~ 0 "~0 12 02 W 39. 1 0'. 0 0 40 0'

46 0 0 0 0 46 WNW WNW 0 21 1 0 0 0 22 NNW 17 0 0 0 0 17

~0 Variable 2 0 0 0 0 2 Total 181 3 0 0 0 z 0 184 Hours of calm in this stability class: 31 Hours of missing wind measurements in, this stabilitytclass::. 12 11 Hours of missing.stability measurements-in-all stability classes:

Page 77

SITE: LIMERICK GENERATING STATICN -. UNITS 1.& 2  %. ".:j"!Ij LICENSEE: EXELON GENERATION COMPANY, LLC" A .~J -

Table D-B.- Wind Speed by Direction Measured at 175 Fýeetffor Various, Stability Classes for.

theLimerick Generating Station.,October,-December, 2009 Limerick Tower 1 -

f- , Period of Rccord: October - December2009

.Stability Class - Extremely Unstable. - 171Ft-26Ft Delta-T (F)

Winds Measured at 175j,.Feet Wind,.Speed (in mph)

Wind

.Direction . 1-3 4-7 8-12.- 13-1.8 197-24 > 24 Total N 1 0 0 0 0 0 1 NNE 1' 2' 0. 0' 0 0 3 NE 3 2 1 0 0 0 6 ENE ,, 1 ' 1 1- 0- 0 0 3 E 1 3 2 0 1 . 0 7 ESE 0 1, 0 Or 0 0 1 SE 2 0. 0", 2" 0 0 4 SSE 0 3" 0:,. 0' 0 0 3 S 0 3: 4.1 0. 0 0 7 SSW 0 2r. 7 1 0 < 0 10 SW 0 1 1 0 0 0 2 WSW 1.' 7: 3" 0 0 0 11 W 0.: 8 " 7 6 1 1 23 1 5 ,= 18.. 7 3 1 35 NW 1i 0 6:" 3 0 1 11 NNW 0 0- 1 2 0 0 3 Variable 0. 0 0 0 0- 0 0

.Total 12 38: 51 21 5 3 130 Hours of calm in this stability class: 0 "

Hours of missing wind measurements in-this stability class-, 0 Hours oftmissing stability measurements in all stability classes: 11 Page 78

SITE: LIMERICK GENERATING STATION -- UNITS  ;&.2' . .

LICENSEE: EXELON GENERATION COMPANY, LLC -

Tabla D'- 8-. Wind Speed' by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, October - December, 2009 Limerick Tower 1:-

Period of Recordý,,October - December2009 Stability Class - Moderately Unstable ' - 171vFt-2.6Ft Delta-T (F)

Winds Measured at "175 Feet Wind Speed (in mph)

Wind

,Directl ný,.: l*! '-'--4-7, 8-12 13-18:' 19-24 >, 24 Total N 0 1 1' 0'. 0 0 3 NNE 1 0 0 0 2 NE 01 11 0. 0 0 0 1 ENE 0 0 0. 0 0 2 E . 0 2 0 0 2 0 0.

ESE . 0 1- 0 0 0 1 0..

SE . 0 0 0 0 0 0

SSE 01 0. 0 0 0 0 S0 3 0" 0 0 4 SSW 1 0* 3 0 *. 0 4 SW 0 0' 0 0 0 0 0 0

  • WSW 0. 0 0- 0 .. 0 0 W 0 0- 2: 7 2 12 WNW 0 4- 5: 24 9 4 2 NW 1 0, 3 3 0 4 11 NNW 0 2 2 0 0 5 Variable 0 0 0" 0." 0. -0 0 Total 3'ý 11 20 18 11  ;, "- 8 71 Hours of calm in this stability class: 0 i" Hours of missing ,wind'measurements 'in this stability class:.,,- 0 Hours of missing stability measurements in all-stability classes: 11 Page 79

SITE: LIMERICK GENERATING STATION - UNITS I & 2, 4. 9t LICENSEE: EXELON GENERATION COMPANY, LLC" Table D. Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for -

the'Li~merick Generating Stationi October - December, 2009, Limerick Tower 1 Period of Record: October.- December2009 Stability. Class - Slightly Unstable . - 171Ft-26Ft Delta-T (F)

Winds Measured at 175'. Feet Wind- Seed (in mph)

Wind Direction 1-3 4-7. 8-12 13-18 19-:24 > 24 Total N 0 3.'" 2.. 1 0 0 6 NNE 0 3 ., 1 0 1 0 5 NE 1 3 0.1 0 0 0 4 ENE 3 5! 2 " 0 0 0 10 E 0. 2 5, 0. 0 0 7 ESE 2 2 0 0 0 0 4 SE 0 1. 0. 0 0 0 1 SSE 1 1, 0- 0L 0 0 2 S 0i 1>' 4 1 0 0 6 SSW 1. 0 1 0 0 0 2 SW 0 1 0 0 0 0 1 WSW 01 1 1 0 1 *' 0 3 W 01' 2' 7 2 1 1 13 WNW 0i 4 8 11 4 1 28 NW 0 0 3 .* 6 2 2 13

,NNW . 1 1.' 3 1 2 1...0 8 Variable 0 0 0. 0 0 0 0 Total 9 30 37 22 11 4 113 Hours of calm in this stability class: 0. .

Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability'classes: 11 Page 80

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

LICENSEE: EXELON GENERATION COMPANY, LLC' .

Table D -871 Wind Speed by Direction Measured at.175 Feet for Various Stability Classes for the Limerick Generating Station, October-* December, 2009 Limerick Tower 1

,`Period of Record: October December2009 Stability Class - Neutral.; , - 171Ft-26Ft Delta-T (F)

W.fnds Measured at 175.;Feet

."ind Speed (in mph)

Wind

.)Direction 1-3 4-7 8-12'.- 13-18 19-24 >...24 Total N 5 14 23 7. 0 0 49 NNE 5' 25 39 14' 0 0 83 NE 8; 31 50 30 2 0 121 ENE 8 30, 31: 0 0 0 69 E . 4" 15 20 34 3 0 76 ESE 1 9' 3, 5 0 0 18 SE 6 5 2 2 0 0 15 SSE 1' 7 14 0 0 0 22 S 0 4 15! 10 1 0 30 SSW 1. 6 10 5. 3 , . 0 25 SW 3 5 5 1:' 0 .0 14 WSW 1 2 3 3 3 0 12 W 7 8 13 14 10 .1 53 WNW 4 20' 35 56:, 32  ;* 2 149 NW 3 10' 22 50 13 -, 5 103 NNW 4 6. 14. 8.ý[ 2 0 34 Variable 0 0 0 0 0'... 0 0 Total 61 197 299 239 69 ... , 8 873 Hours of calm in this stability class: 0 , f Hours of missing wind measurements in this stability class-.. 0-Hours of missing stability measurements .in all stability classes:. *1-1 Page 81

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2,':, -..1"'., ' `7ý i4 LICENSEE: EXELON GENERATION COMPANY, LLC Wind Speed by Direction Measured at 175 Feet for Various'Stability Classes for Table D 8-the Limerick Generating Station, October - December, 2009 Limerick Tower 1 Period of Record:.October -. December2009

.,Stability ,Class - Slightly :Stable - 171Ft-26Ft Delta-T (F)

Winds Measured at-175 Feet Wind.,Speed (in mph)

Wind

.- Direction 1-3 4-7 8-12 13-18. 19A24:,*, >.`24 Total N 4 10 15, 3 0 0 32 NNE 9 12 15 3 0 0 39 NE 5 6. 12 4 0 0 27 ENE 2 13 6 2 0 0 23 E 3 9 13 6.. 0 0 31 ESE 4 6,- 3. 6 1 0 20 SE 2ý 4 4.ý 4 0 0 14 SSE 2 6 8 6 0 0 22 S 1' 8, 16: 11. 0 .0 36 SSW 2 9: 7 3 0 0 21 SW 1' 10" 6 7 0 1 25 WSW Q 6_ 7 9 10 0 , 1 33 W 2- 16ý 10 9 2 0 39 3.' 25 69 32 1 '0 130 4 11 41 15, 0 0 71 NNW 3 6 7. 1 0 0 17

.Variable 0 0,' 0 0 0. 0

. Total 53, 158 241 1221' 4 2 580 Hours of calm in this stability class: 0 Hours of missing wind measurements in thisstability class: 0 Hours of missing stability measurements in all stability classes: 11 Page 82

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC" Table D -8, Wind Speed by Direction Measured at 175. Feet for Various Stability Classes for the Limerick Generating Station, October - December, 2009 Limerick Tower 1

  • Period-of Record: October - December2009 Stability Class - Moderately'Stable. - i71Ft-26Ft Delta-T (F)

Winds Measured at 175 'Feet Wind 'Speed (in mph)

Wind Direction ' 1-S 4-7 8-12-. 13-18 19-24: .> 24 Total N 0 1 i":1 0 0 0 2

'NNE 1 4 3. 0" 0 0 8 NE 1. 2. 1 -, 0 0 0 4 ENE 2:. 4 1-: 0. 0 0 7 E 1 0 . 6' 4 0 0 11 ESE 0 1' 1 0' 0 .02 2 SE 4 0., 0, 0 0 0 4 SSE 10  : 0' 0. 0 0 1 S 1: 3... 3' 0 0 0 7 SSW 0' 5' 5, 1. 0 0 11 SW 4' 4 1 0' 0 0 9 WSW 1 12 4 i' 0 0 18 W 2' 9 7:"- 0., 0 0 18 WNW 1 29, 23 - 1 0 0 54 NW 6 10 8' 2 0 ' 0 26 NNW 7' 7' 3 0 ," 0  ; 0 17 Variable 0 0 0, 0 0 ., . 0 0 Total 32 91. 67 9ý 0 , 0 199 Hours of calm in this stability class: 4 Hours of missing wind maasurements in this stability-class:- 0 Hours of missing stability measurements in all stability.classes: .11 Page 83

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 8 Wind Speed by Direction Measured! at 175 Feet for Various Stability Classes for the Limerick Generating Station, October - December, 2009 Limerick Tower 1 Period of Record: October - December2009 Stability-Class - Extremely Stable - 171Ft-26Ft Delta-T (F)

Winds, Measured at 175 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-1,2 13-18 19-24 > 24 Total N 5 8 3 0 0 0 16 NNE S 3 1 0 0 0 9 NE. 5 2 0 0 0 0 7 ENE 4 2 0 0 0 0 6 E 4 4 1 0 - 0< 0 9 ESE 2 1, 0 0" 0 6 2SE . 1- 0 G 0' 0 2 SSE . 1,2 2. 1" 0 0.. 0 5

,S% , 2 1 0 0 0 0 3 SSW 3 2 00 0 0 5 SW 4 6 2 00 12

.WSW '7 '9 3 0 0 0 19

  • 13* 3100 0 21 bW4. 10 .15 25ý 0 -0 0 50
    • NWq 23 8 7'0. 0 0 38

.": 5 §8 2 , 0 0 0 15 "Variable -0 01 0. 0 0 0 C Total 72 101 50 0 0 0 223 Hours of'"calm in this-stabili'ty class: 4 Hours. of :,missing wind, measurements in this stability classs: 0 Hours of missing stability measurements in all stability classes: 11 Page 84

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 9 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, January - December, 2009 Limerick Tower 1 January-December, 2009 30 ft. Wind Speed and Direction 171Ft-26Ft Delta-T (F)

Number of Observations = 8311 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 0.01 0.01 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 C zU 0.00 0.00 0.00 0.00 0.00 0.00 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 0.13 0 .13 0.00 N 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 0.23 0.23 "Oi 0.00 0Or.0 0 *0.25 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 0.25 0.63 EU 0.02 0.02 0.02 0.06 0.06 0.04 0.05 0.01 0.04 0.10 0.08 0.16, 0.17- 0.07 0.05 0.02 .0.97 0.97 MU 0.02 0.00 0.01 0.01 0.00 0.00 0.01 0.00 0.01 0.01 0.05 0.06 0.11 0.02 0.06 0.06 0.45 0.45 1 LU 0.06 0.05 0.07 0.01 0.04 0.02 0.02 0.06 0.05 0.02 0.08 0.10 0.16 0.08 0.05 0.01 0.89 0.89

- N 0.40 0.59 0.63 0.58 0.43 0.26 0.19 0.31 0.36 0.28 0.43 0.58 0.66 0.61 0.53 0.55 7.40 7.40 3 85 0.73 0.69 0.96 0.85 0.71 0.29 0.25 0.32 0.47 0.73 0.96 1.24 1.74 1.60 1.22 0.72 13.50 13.50.

MS 0.31 0.22 0.25 0.35 0.19 0.20 0.17 0.17 0.26 0.45 0.45 0.69 1.40 1.55 1.02 0.47 8.15 8.15 ES 0.48 0.28 0.34 0.19 0.12 0.10 0.06 0.05 0.06 0.10 0.24 0.30 0.99 1.41 1.08 0.84 6.63 6.63 37.99 EU 0.13 0.24 0.29 0.22 0.08 0.02 0.04 0.04 0.31 0.57 0.43 0.34 0.75 0.61 0.30 0.07 4.44 4.44 MU 0.04 0.07 0.12 0.07 0.04 0.02 0.01 0.05 0.10 0.26 0.08 0.06 0.14 0.42 0.30 0.10 1.89 1.89 4 aU 0.23 0.14 0.13 0.14 0.10 0.05 0.04 0.10 0.19 0.32 0.20 0.23 0.28 0.24 0.39 0.08 2.86 2.86

- N 1.07 1.22 1.25 1.65 1.34 0.34 0.32 0.73 0.77 0.88 0.41 0.37 0.78 1.49 1.78 0.84 15.24 15.24 7 SS 0.47 0.48 0.66 0.84 0.77 0.45- 0.53 0.83 1'ý20 0.73 '0.31 0.41" 1.23ý 1.93 1.06 0;.77 12.67 -12.67 MS 0.04 0.06 0.04 0.06 0.07 0.04 0.02 0.06 0.17 0.14 0.04 0.00 0.11 0.29 0.13 0.01 1.28 1.28 ES 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.06 0.02 0.00 0.13 ,0.13 7- 38.52 EU 0.07 0.02 0.01 *0.05 0.01 0.05 0.00 0.01 0.06 0.13 0.02 0.12 0.14 0.37 0.36 0.02 1.47 1.47 MU 0.05 0.00 0.05 0.02 0.01 0.00 0.0.8 0.00 0.02 0M04 0.00 ý-0.07 , 0.08 0.39 0.47 0.-0 1.30 1.30.

8 SO 0.12 0.00 0.00 0.07 0.11 0.01 0.00 0.00 0.07 0.02 0.01 0.06 0.13 0.29 0.61 0.13 1.65 1.65

- N 0.42 0.55 0.40 .0.40 1.03 0.22 0.01 0.06 0.26 0.19 0.02 0.07 0.65 1.91 2.86 1.01 10.08 10.08 1 S8 0.06 0.06 0.07 .,0.16 0.41 0.16 0.07 0.17 0.13 0.05 0.07 0.14 0.34 0.57 0.53 0.16 3.14 3.14 2 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 17.64 EU 0.00 0.00 0.00 .-0.00 0*.01 0ý 01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.11 0.05 0.00 0.20 0.20 1 MU 0.01 0.00 0.00 0.00 0.00 0.00 0 ;-00 0.02 0.00 0.00 0o. 00.* 0.06 0.12 0.22 0.00 0.45 0.45 3 LU 0.01 0.00 0.00
  • 0.00 0.0.00 0.00 0.00 0.00 6.oo 0.00 0.00 0.02 0.12 0.39 0.05 0.60 0.60)

- N 0.02 0.02 0.02 0.01 0.08 0.04 0.00 0.00 0.04 0.00 0.00 0.00 0.25 0.72 1.31 0.20 2.73 2.73 1 SS 0.00 0.00 0.00 0. 00 0.07 0.01 0.00 0.00 0.00 0.00 0.01 0.00 0.04 0.10 0.02 0.04 0.29 0.29 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 4.27 Page 85

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 9 Wind Speed by Direction Measured at 30 Feet for Various Stability Classes for the Limerick Generating Station, January - December, 2009 Limerick Tower 1' January-December; 2009 30 ft. Wind Speed and Direction 171rt-26Ft Delta-T (F)

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

CLASS N NNE NE ENE E, ESE'-, SE SSE S SSW SW WSW W I%'NW 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 0.01 0.00 0.00 0.01 0.01 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 0.01 0;07 0.00 0.08 0.08 9 SU 0.00 0.00 0.00 0.00 0.00 0.00 0o00 0.00 0.00 0;U0 0.00 0.00 0.02 0.04 0.01 0.00 0.07 0.07

- N 0.00 0.00 0.00 0.00 0.00 0.00 0:900 0Uo0 0:00 0.0c 0.00 0.00 0.01 0.06 0.10 0.00 0.17 0.17 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 U000 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 0-0c 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 C¢00 0.00 0.00 0.00 0.00 0.00 0.00 0.34 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 O.OCU 0:00 0.00 0.00 G MU 0.00 O.O0 0.00 0.00 0.00 0.00 jU0 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 C 00 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 4 MS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0o00 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 TOT 4.78 4.72 5.33 5.75 5.72 2.31 1.80 2.97 4.62 5.03 3.92 5.01 10.32 15.21 14.99 6.27 99.37 7.11 4.16 6.08 35.63 29.73 9.65 7.01 99.37 Wind Direction by Stability N NNE NE ENE E ESE SE "SSE S SSW SW WW WS NW *NNW TOTAL -STABILITY CLASSES-0.23 0.29 0.32 0.32 0.17 0.11 0.08 0.06 0.41 0.79 0.54 0.61 1.09 1.18 0.76 0.12 7.11 Extremely Unstable 0.12 0.07 0.18 0.11 0.06 0.02 0.02 0.05 0.16 0.31 0.13 0.19 0.40 0.96 1.12 0.25 4.16 Moderately Unstable 0.42 0.19 0.20 0.23 0.24 0.08 0.06 0. 16 0.32 0.37 0.30 0.39 0.61 0.77 1.44 0.28 6.08 Slightly Unstable 1.91 2.38 2.30 2.64 2.89 0.85 0.53 1.11 1.43 1.35 0.87 1.02 2.36 4.80 6.58 2.61 35.63 Neutral 1.26 1.23 1.70 1.85 1.96 0.90 0.85 1.32 1.80 1.52 1.36 1.7S 3.34 4.19 2.83 1.68 29.73 Slightly Stable 0.35 0.28 0.29 0.41 0.26 0.24 C.19 0.23 0'43 0.59 0 48 0.69 1.50 1.84 1.16 0.48 9.65 Moderately Stable 0.48 0.28 0.34 0.19 0.13 0.10 0.06 0.05 1.01 1.47 0.06 0.10 0.24 0.31 1.112 0.84 7.01 Extremely Stable Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW w WIM MNW NEW TOTAL -WIND SPEED CLASSEb-0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.63 CALM 2.03 1.84 2.29 2.06 1.55 0.91 0.76 0.93 1.25 1.68 2.30 3.12 5.22 5.35 4.01 2.68 37.99 < 3.5 mph 1.97 2.21 2.49 2.98 2.41 0.91 0.96 1.80 2.74 2.91 1.48 1.42 3.31 5.04 3.98 1.88 38.52 3.6 - 7.5 mph 0.72 0.64 0.53 0.70 1.58 0.43 0.08 0.24 0.55 0.43 0.13 0.47 1.35 3.53 4.84 1.42 17.64 7.6 - 12.5 mph 0.05 0.02 0.02 0.01 0.18 0.05 0.00 0.00 0.07 0.00 0.01 0.00 0.41 1.17 1.99 0.29 4.27 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 0.04 0.12 0..18 0.00 0.34 18.6 - 24.5 mph

-ý0.00 "0.00 0.00 0.00 0.00 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 86

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 10 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, January - December, 2009 Limerick Tower 1 January-December, 2009 175 ft. Wind Speed and Direction S171Ft-26Ft Delta-ý-T (F)

SNumber'of Observations 8437 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 NWW TOTAL EU'

  • U" 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 SO 0.00 0.00 0.00 0.00 0.00 0.00 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 0.0b 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 0.01 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 O.O4 0.04 0.05 EU 0.02 0.01 0.05 0.02 0.01 0.00 0.05 0.02 0.04 0.01 0.04 0.01 0.02 0.05 0.02 0.01 0.39 0.39 MU 0.00 0.01 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.02 0.05 0.04 0.01 -0.17 0.17,'

1 SU 0.01 0.01 0.01 0.05 0.01 0.04 0.04 0.01 0.00 0.04 0.00 0.04 0.04 0.07 0.00 0.04 0.39 0.39

- N 0.25 0.25 0.4'0 0.34 0.28 0.11 0.20 0.11 0.07 0.20 0.09 0.18 0.33 0.24 0.17 0.19 3.41 3.41 3 SS 0.32 0.37 0.39 0.31 0.27 0.20 0.20 0.15 0.09 0.08 0.06 0.14 0.25 0.17 0.25 0.14 3.40 3.40 MS 0.07 0.05 0.06 0.13 0.02 0.09 0.14 0.09 0.07 0.08 0.15 0.07 0.09 0.14 0.30 0.24 1.81 ES 0.12 0.09 0.12 0.13 0.20 0.12 0.07 0.07 0.06 0.13 0.12 0:20 .0.1.9 0.30 0.27 0.12 -2.30 2.30 11.88 EU 0.06 0.14 0.25 0.12 0.08 0.02 0.01 0.07 0.08 0.18 0.15 0.25 0.34 0.25 0.05 0.02 2.09 2.09 MU 0.05 0.08 0.06 0.09 0.02 0.00 0.01 0.00 0.06 0.13 0.05 0.06 0.17 0.20 0.09 0.08 1.16 1.16 4 SU 0.12 0.20 0.09 0.12 0.07 0.04 0.05 0.06 0.17 0.12 0.12 0.12 0.13 0.13 0.11 0.05 1.68 1.68

- N 0.56 0.73 1.08 1.10 0.81 0.39 0.20 0.32 0.38 0.41 0.46 0.26 0.51 0.79 0.52 0.46 9.00 9.00 7 SS 0.43 0.52 0.57 0.89 0.58 0.40 0.20 0.40 0.58 0.62 0.69 0.58 0.72 1.47 0.77 0.55 9.97 9.97 MS 0.12 0.09 0.11 0.12 0.11 0.07 0.08 0.13 0.23 0.27 0.45 0.52 0.58 1.26 0.69 0.37 5.19 5.19 ES 0.18 0.07 0.08 0.13 0.06 0.07 0.06 0.06 0.13 0'.28 0.27 0.34 0.51 0.85 0.72 0.26 4.09 ,4.09 33.18 EU 0.09 0.15 0.09 0.11 0.09 0.01 0.00 0.01 0.17 0.49 0.25 0.24 0.55 0.47 0.23 0.07 3.02 3.02 MU 0.06 0.02 0.04 0.07 0.01 0.01 0.02 0.00 0.07 0.18 0.07 0.04 0.14 0.36 0.25 0.07 1.41 1.41 8 SU 0.19 0.04 0.08 0.04 0.1v 0.01 0.00 0.02 0.13 0.23 0.19 0.15 0.19 0.37 0.3A 0.08 2.24 2.24 N 0.79 0.81 0.94 0.87 1.16 0.45 0.21 0.52 0.73 0.66 0.2:3 0.27 0.51 1.53 1.27 0.97 11.92 11.92 1 SS 0.65 0.40 0.50 0.44 0.82 0.40 0.33 0.68 1.27 0.77 0.63 0.43 1.03 2.25 1.24 0.62 12.46 12.46 2 MS 0.09 0.04 0.04 0.01 0.08 0.01 0-00 0-04 0 12 0.25 0.24 0.18 0.19 0.91 0.27 0.11 2.57 2.57 ES 0.05 0.01 0.01 0.00 0.04 0.04 0.00 0I01 0.00 0.02 0.14 0.11 0.07 0'.57 0.25 0.04 1.35 1.35 34.98 EU 0.01 0.00 0.00 0.00 0.00 0.00 0'.06 0.00 01.02 0*12 0.06 0.18 0.26 0.24 0.08 0.02 1.05 1.05 1 MU 0.05 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.02 0.02 0.00 0.06 0.14 0.31 0.18 0.06 0.87 0.87 3 SU 0.06 0.00 0.00 0.00 "0.00 0.02- 0.00 0.00 0.04 0;05 0.01 0.08 0.12 0.43 -0.21 0.09 1.11 1.11 .

- N 0.43 0.31 0.41 0.02 0.71 0.28 0.04 10.05 0.23 "0.31 0.09 0.14 0.58 2.04 1.55 0.59 7;79 7.79 1 SS 0.09 0.08 0.07 0.04 0.25 -0.26, 0.11 0.14 0.37 0.24 0.18 0.21 0.37 0.77 0.27 0114 3.59 3.59 8 MS 0.00 0.01 0.00 0.00 0.05 0.01 0.00 0.01 0.00 0.07 0.01 0.04 0.02 0.02 0.02 0.00 0.27 0.27 ES 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 0.02 0.00 0.00 0.04 0.04 14.72 Page 87

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 10 Wind Speed by Direction Measured at 175 Feet for Various Stability Classes for the Limerick Generating Station, January - December, 2009.

Limerick Tower 1 January-December, 2009 175 ft., Wind Speed and Direction 171Ft-26Ft Delta-T (F)

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

CLASS N NNE ME 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 0.01 0.00 0.00 ",0.00 -0.02 0.00 '0,00. .0.04 .0.04 ' 0.06 0.00 0.00 0.17 0.17 1 MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.04 0.00 0.01 0.11 0.12 0.08 0.00 0.36 0.36 9 SU 0.00 0.01 0.00 0.00 0.00 0.00 0.04 0.00 0.00 0.01 0.00 0.00 0.01 0.08 0.11 0.13 0.06 0.41 0.41

- N 0.04 0.00 0.05 0.00 0.04 0.00 0.00 0.05 0.09 0.00 0.07 0.38 1.16 0 _".57 0.13 2.61 2.61 2 SS 0.00 0.00 0.00 0.00 0.05 0.01 0.00 0.00 0.00 0.01 0.01 0.07 0.11 0.17 0.00 0.04 0.46 0.46 4 MS 0.00 0.00 0.00 0.00 0.00 O.CO -0.00' 0.00 ý0.00. 0.00 ý0.00 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 4.01 EU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0 0 0.00 0.02 0.09 0.01 0.00 0.13 0.13 G MU 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00M 0.05 0.06 0.06 0.00 0.17 0.17 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 0.07 0.08 0.02 0.00 0.18 0.18 N 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.19 0.26 0.12 0.00 0.58 0.58 2 SS 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.04O 0.02 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 6.60 1.15 TOT 4.91 4.53 5.50 5.14 6.06 3.12 2.09 2.99 5.20 6.10 4.79 5.14 9.16 18.38 11.17 5.63 99.95 6.85 4.12 6.02 35.31 29.98 9.86 7.-1l 99.95 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW:' W NNW TOTAL' " -STABILITY CLASSES.-

0.19 0.31 0.39 0.25 0.20 0.04 0.12 0.11 0.33 0.79 0.50 0.71 1 .23 1.16 0.39 0.13 6.85 Extremely Unstable 0.15 0.12 0.09 0.17 0.07 0.01 0.04 0.00 0.15 0.38 0.12 0.18 0 .63 _1.09 0.70 0.23 4.12 Moderately Unstable.

0.38 0.26 0.19 0.20 0.26 0.11 0.08 0.09 0.34 0.43 0.32 0.40 0 .63 1.19 0.82 0.32 6.02 Slightly Unstable 2.06 2.10 2.88 2.33 3.00 1.27 0.65 1.00 1.46 1.68 0.88 0.94 2 .50 6.02 4.20 2.35 35.31 Neutral 1.49 1.37 1.53 1.67 1.97 1.28 0.84 1.37 2.31 1.72 1.58 -1.46 2 .51 .4.85 2.54 1.48 29.98 Slightly Stable 0.28 0.19 0.20 0.26 0.26 0.19 0.23 0.27 0.41 0.68 o.85. 0.81 0 .89 2-.33 1.28-- 0.71.- 9.86" Moderately Stable . -

0.34 0.18 0.21 0.26 0.30 0.23 0.13 0.14 0.19 0.43 0.55 0.65 0 .77 _1.74 1.24, 0o41, 7.81 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 0.05 C-A LM 0.79 0.79 1.03 0.98 0.82 0.56 0.70 0.46 0.33 0.55 0. 46 0.65 0.95 1.01 1.04 0.75 11.88 < 3.5 mph 1.51 1.85 2.24 2.57 1.73 1.00 0.62 1.04 1.62 2.01 2. 19 2.13 2.96 4.95 2.95 1.79 33.18 3.6 - 7.5 mph 1.93 1.47 1.69 1.53 2.38 0.94 0.57 1.28 2.49 2.60 1. 74 1.41 2.68 6.46 3.85 1.96 34.98 7.6 - 12.5 mph 0.64 0.40 0.49 0.06 1.03 0.58 0.20 0.20 0.68 0.81 0. 37 0.71 1.49 3.83 2.32 0.91 14.72 12.6 - 18.5 mph  :.! ::::

0.04 0.01 0.05 0.00 0.09 0.05 0.00 0.00'-0.08 0.14 0. .01 0.20 0.7.1 1.61 0.78 .0.23 4.01 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. 01 0.04 0.37 0.52 0.21 0.00 1.15 > 24.5 mph Page 88

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 11 Annual x/Q and D/Q values for the North Stack, Limerick Generating Station, 2009 Limerick Generating Station x/Q and D/Q values North Stack - Flow = 251200 cfm X/Q (s/mA3) DIQ (IimA2)

Sta ck ID Location Direct ion Ran ,(m) Undepleted Site Boundary S 762 1.86E-07 1.77E-09 Site Boundary SSW 762 1.94E-07 1.75E-09 Site Boundary SW 884 1.80E-07 1.51 E-09 Site Boundary WSW 854 2.12E-07 1.81 E-09 Site Boundary W 854 2.90E-07 2.95E-09 Site Boundary,_!: WNW 793 1.03E-07 8.99E-10 Site Boundary NW 762 7.11 E-08 4.51 E-10 Site Boundary NNW 884 1.05E-07 7.59E-1 0 Site Boundary. N 884. 1.76E-07 1.64E-09

.Site Boundary NNE 793 1.94E-07 2.OOE-09 Site Boundary NE 793 1.12E-07 1.12E-09 Site Boundary ENE 793 1.36E-07 11.49E-ý09 Site Boundary E 762 4.09E-07 4.48E-09 Site Boundary ESE 762, 8.02E-07 9.70E-09 Site Boundary SE 762 9.04E-07 1.21 E-08 Site Boundary :SSE 1006 1.91 E-07 2.04E-09 RR-Inf-Lck-NG S 300 7.98E-07 6.56E-09 RR-Inf-Lck-NG SSW 2251. 1.40E-06 6.32E-09 RR-Inf-Lck-NG SW 225 1.62E-06 9.92E-09 RR-Inf-Lck-NG WSW 345 8.39E-07 6.13E-09 RR-Inf-Lck-NG W 225 2.53E-06 2.09E-08 RR-Inf-Lck-NG WNW 345 3.84E&07 3.1OE-09 RR-Inf-Lck-NG NW 450 1.62E-07 9.61 E- 10 RR-Inf-Lck-NG ESE 884 6.55E-07 7.78E709 RR-Inf-Lck-NG WSW 450 5.27E-07 4.30E-09 RR-Inf-Lck-NG NNE 682- 2.37E-07 2.42E-69 Inhalation N 948 1.61 E-07 1.49E-09 Inhalation NNE 825 1.84E-07 1.91 E-09 Inhalation NE 1057 7.87E-08 8.1OE-1.0 Inhalation ENE 985 1.03E-07 1.15E-09 Inhalation E 873 3.42E-07 3.72E-09 Inhalation ESE 1047 .5.20E-07': 6.08E-09 Inhalation SE 1557 3.45E-07 4.23E-09 Inhalation SSE 1647 '1.03E-07 1.08E-09 Inhalation S 1325 8.91 E-08 9.09E71 0 Inhalation SSW 1543 7.90E-08 8.11E-10 Inhalation SW 991 1.54E-07 1.31 E-09 Page 89

SITE: LIMERICK GENERATING STATION:-_ UNITS I & 2 7 LICENSEE: EXELON GENERATION COMPANY, LLC Table D -7 11. - Annual x/Qoand D/Q values for the North Stack, Limerick Generating Station,.2009 Limerick Generating Station X/Q and D/Q values

. North Stack - Flow = 251200 cfm X/Q (s/mA3) ... D/Q (1/mA2)

Stack ID ý. Location 'Direction Ranae (rr0) UndeDleted N Inhalation "WSW 1158 1.42E'-07. 1.28E-09 N Inhalation,.. ,W  :'.! 105 2.04E-07-., 2.06E-09 N-1 Inhalation' ,-WNW ,1198 5P.88E708 ., 5.17E-10 N- Inhalaticn ,.NW 1104 4.34E-08' 2.85E-10 N Inhaiation NNW 1540 5.'25E-08 4.1OE-'10

.N Vegetation N ,ý2867 5.74E708 3.55E-10 N Vegetation ':NNE '.2S29 5.78E-08 3.82E-10 N Vegetation 'NE .54 16 3.68E-08 1.03E-10 N Vegetation ENE 4372 4:70E-08 1.78E-10

.i N Vegetation '3849 9.85E-08 4.72E-1 0 Vegetation ESE 555 1*27E-06 7 1.55E-08 N Vegetation SE ~.30 2.43E-06ýj 3.31 E-08 N Vegetation SSE 2102 8.24E1-08, 7.71E-10 N Vegetation "S ;1860 6.34E,,08, 6.28E-.10 N Vegetation SSW :1i622 7.511E-08 7.65E-10 N Vegetation SW .1572 8.75E-08-, 8.33E- 10 N Vegetation ,WSW £662 6.52E-08 3.54E-10 N Vegetation WN W .-1283 I1.67E-07 1.70E-09 N Vegetation WNW .'1:198 '5,88E-08 5.17E-10 N. Vegetation.  : NW 2490 .2.20E-0,3, 1.23E-10 N Vegetation. NNW 2666 *3.70E-08,K . 2.09E-10 N. Meat,. t-N "7565 3.33E-08, 8.45E-1 1 Meat, ENE 6264 '4.33E-08 1.04E-10 N'. Meatýý., SE 3331 1.67E-07o 1.36E-09 N'. Meat-: S '.3722 4.84E-08 2.67E-10 Meat ., :SSW :3145 5.27E-08.'. 3.52E-10

-N' Meat SW E653 5.16E&08 1.68E-10 N Meat.- WSW ..4336. 6.13E-08 2.83E-10 N .4467 6.14E-08 3.15E-10 N Cow,::.'.: 'N ý7565 3.33E-08 8.45E-1 1 N Cow - S 6781 3.77E-08: 1.11E-10 Cow N Cow 'SSW .31,45 5.27E7 08 3.52E-10 N'

N WSW '4336 6.13E-08 2.83E- 10 Cow SW C ,owi.. '4467 6.14E-08 3.15E-10 Page 90

SITE: LIMERICK GENERATING STATIONW- UNITS -& 2 LICENSEE: EXELON GENERATION COMPANY,LLC", !L Table D '-:-12 Annual x/Q and D/Q values for the Sout Stabk, Limerick Generating Station, 2009 Limerick Generating Station Vx/Q and D/Q values South Stack - FIow'= 177200 cfm X/Q (s/mA3) -D/Q (1/mA2)

Stack ID - Location Direction Ranae (im) UndeDleted S Site Boundary 'SSW ,`-762 6.22E-08 8.34E-10 S Site Boundary. 0762 6.49E-08 8.61E-10 S Site Boundary , SW "884 5.24E-08 7.29E-1 0 S Site Boundary WSW 854 6.89E&08 9.64E-10 S Site Boundary 854 1.02E-07, 1.23E-09 S Site Boundary WNW  ;'793 3.36E-08 3.74E-1 0 S

Site Bound*,ry -NW 762 2.28E-08,:* 2.06E-1 0 S Site Boundary NNW  ?'884 3.61 E-08 3.98E'-1 0 S Site Boundary NN .-.'884 6.76E-08 9.35E510 S Site Boundary NNE 793 6.84E-08i 1.25E-09 S Site Boundary NE 793 3.16E-08 7.37E-10 Site Boundary .,ENE -';793 3.94E-08 9.39E-1 0 S

S Site B6uridary -762 1.28E-07 2.35E-09

.Site Boundary ESE .762 2.65E-07 4.61 E-09 Site Boundary - SE .762 3.39E-07 5.53E-09 S Site Boundary SSE -1006 6.70E-08 9.29E-1 0 S RR-Inf-'Lck-NG .300 2.55E-07 2.46E-09 S RR-Inf-Lck-NG - SSW 225 4.39E-07 3.49E-09 S -RR-Ini-ELk-NG SW '225 4.38E&07 3.34E-09 S. RR-Irf-Lck-NG WSW " 345 2.51 E-07 2.49E-09 S RR-In,-Lck-NG .W -,225 8.70E 7.37E-09 S RR-In',mLck-NG  %ýWNW ,-345 1.24E-07'ý- 1 .16E-09 RR-Inf-Lck-NG --NW 450 5.15E-08, 3.96E-10 S. RR-Inf-Lck-NG ' ESE 884 2.24E-07 3.85E-09 S RR-Inf-Lck-NG WSW '.450 1.59E-07 1.88E-09 S RR-Inf-Lck-NG .NNE f.682 8.09E-08 1.44E-09 S Inhalation 'N  %'948 6.24E-08 8.70E-10 S Inhalation NNE '825 6.55E-08 1.21 E-09 S Inhalation- NE 1057 2.59E-08 5.82E-1 0 S Inhalation- 'ENE *,985 3.29E-08 7.77E-1 0 S Inhalation E I 873 1.11 E-07 2.03E-09 S Inhalation*C " ESE 1,1047 11.87E-07 :;" 3.16E-09 S Inhalation K SE 1557 1.61 E-0'.. 2.56E-09 S Inhalation SSE 1647 4.46E-08.:.- 6.55E-10 S Inhalation S 1325 3.42E-08 5.73E-10 S Inhalation SSW 1543 3.24E-08 5.75E-10 S Inhalation SW 991 4.58E-08 6.74E-10 S Inhalation WSW 1158 4.93E-08 7.87E-10 S Inhalation W 1105 7.45E-08 9.60E-1 0 S Inhalation WNW 1198 2.03E-08 2.62E-1 0 S Inhalation NW 1104 1.44E-08 1.54E-10 Page 91

SITE: LIMERICK GENERATING STATION - UNITS 1 & 2 LICENSEE: EXELON GENERATION COMPANY, LLC Table D - 12 Annual x/Q and D/Q values for the Sout Stack, Limerick Generating Station, 2009 Limerick Generating Station x/Q and D/Q values South"Stack Flow 7200 6im X/Q (s/mA3) D/Q (1/mA2)

Inhalation 1540 2.09E-08 2.76E-10 Vegetation 2867 3.80E-08 2.82E-10 Vegetation 2929 .3 89E-08 . 3.20E-10 Vegetation 5416 3.12E-08 9.40E-1 1 Vegetation 4372, 3.78E-08 1.58E-10 Vegetation -..3849 7.31E-08 3.82E-10 Vegetation ESE 555 3.96E-07 6.83E-09 Vegetation SE 390 8.80E-07 1.38E-08 Vegetation SSE 12102 '4.29E-0W 5.17E-10 Vegetation .1860,"- 3.03E-08 4.61 E-10 Vegetation SW .1622 3..18E-,08 5.52E-10 Vegetation 5wsw SW 1572 3.19E-08 5.72E-10 Vegetation -3662 .. 4.,78E-08 NWSWi, 3.09E-10 Vegetation W 1283 -t6,38E 8.70E-10 Vegetation WNW 1198,2ý .- 12.03E-08,. 2.62E-10 Vegetation NW 2490 2 1.24E-08 9.37E-1 1 Vegetation NNW 2666 2.25E-08 1.62E-10 Meat . -. 7565 2, 2.95E-08, ,.. 7.46E-11 Meat.. ENE- -6264~ 3.,76E-08, 9.42E-1 1 Meat SE 3331 ' 1..20E-07.. , 1.05E-09 Meat S 3722 3.67E-08 2.32E-10 Meat SSW 3145 3.62E-08 3.OOE-10 Meat SW 5653 4.34E*.E-08 1.52E-10 Meat WSW 4336 4.80E-08 2.52E-10

'Me at 44674 4.81 E-08 2.56E-10 Co*w 2 7565 2.95E-08*- 7.46E-1 1 Cow 6781 2 3.32E-08 1.02E-10 Cow WSW 3145 3.62E-08 " 3.OOE-10 Cow.

ViS:'J 2', 4336 '4.80E-08 2.52E-10 Cow ", 4467 4.81 E-08 2.56E-10

- .. ~

Page 92

1.1.1. Establish the process and boundary conditions for the preparation 'of specific procedures for processing, sampling, analysis, packaging, storage, and shipment of solid radwaste in accordance with local, state, and federal requirements. (CM-1) 1.1.2. Establish' parameters which will provide reasonable assurance that all Low Level Radioacti'e Wastes (LLRW), processed by the in-plant waste process systems on-site OR by on-site vendor'supplied waste processing systems, meet the

  • acceptance 'criteria to a Licensed Burial Facility, as required by10CFR Part 20, 10CFR Part`6i 10CFR Part71, 49CFR Parts 171-172, "Technical Position on Waste F6rm (Revision 1)" [0/91], "Low-Level Waste Licensing Branch Technical Position on Radioactive Waste Classification" [5/83], and the'Station Technical Specifications, as applicable.

1.1.31 Provide reasonable assurance that waste placed in "on-site storage"'meets the requirements as addressed within the Safety Analysis Reports for the low level radwaste storage facilities for dry and/or Processed wet waste.

2. TERMS AND DEFINITIONS,:,

2.1. Process Control Program.(PcP): The program which contains.the current.

formulas, ,sampling, analysis, tests, and determinations to be made to ensure that processing and packaging of solid radioactive waste based on demonstrated processing of actual or simulated wet solid-wastes will be accomplshed in such a way as to assure the waste meets the stabilization criteria specified in 10CFR Parts 20, 61 and 71,, state regulations, and burial site requirements.

2.2. Solidification

Liquid waste processed to either an unstable or stable form per 10CFR61 requirements. Waste solidified does not have to meet the 300-year free standing monolith criteria. Approved formulas, samples and tests do not have to meet NRC approval for wastes solidified in a container meeting stability (e.g. High Integrity Container).

2.3. Stabilization

Liquid waste processed to a "stable state" per 10CFR61 Requirements. Established formulas, samples, and tests shall be approved by the NRC in order to meet solidification "stabilization" criteria. This processing method is currently not available, because the NRC recognizes that waste packed in a High Integrity Container meets the 300-year stabilization criteria. In the event that this processing method becomes an acceptable method, then the NRC shall approve the stabilization formulas, samples, tests, etc.

RW-AA-100 Revision 7 Page 2 of 9 2.4. Solidification Media: An approved media (e.g. Barnwell - vinyl ester styrene, cement, bitumen) when waste containing greater than 5-year half lives is solidified in a container when the activity is greater than 1 micro curie/cc. Waste solidified in a HIC is approved by the commission meeting the 10CFR61 stabilization criteria, including 1% free standing liquids by volume when the waste is packaged to a "stable" form and < 0.5% when waste is packaged to an "unstable" form. The formulas, sampling, analysis, and test do not require NRC approval, because the HIC meets the stability criteria.

2.4.1. Solidification to an unstable or stable state are performed by vendors, when applicable. Liquid waste solidified to meet stabilization criteria (10CFR61 and 01-91 Branch Technical Requirements) shall have documentation available that shows that the process is approved by the NRC or disposal facility.

2.5. Dewatering

The process of removing fluids from liquid waste streams to produce a waste form that meets the requirements of 10CFR Part 61 and applicable burial site criteria, <0.5% by volume when the waste is packaged to an "unstable" state, or

<1% by volume when the waste is packaged to a "stable" form.

2.6. High Integritv Container (HIC): A disposable container that is approved to the Requirements of 10CFR61. The use of HIC's is an alternative to solidification or encapsulation in a steel container to meet burial stability. HIC's are used to package dewatered liquid wastes, (e.g. filter cartridges, filter media, resin, sludges, etc), or dry active waste.

2.7. Encapsulation

The process of placing a component (e.g. cartridge filters or mechanical components) into a special purpose disposable container and then completely surrounding the waste material with an approved stabilization media, such as cement.

2.8. Liquid Waste Processing Systems: In-plant or vendor supplied processing systems consisting of equipment utilized for evaporation, filtration, demineralization, dewatering, compression dewatering, solidification, or reverse osmosis (RO) for the treatment of liquid wastes (such as Floor Drains, Chemical Drains and Equipment Drain inputs).

2.9. Incineration, RVR, and/or Glass Vitrification of Liquid or Solid: Dry or wet waste processed via incineration and/or thermal processing where the volume is reduced by thermal means meets 10CFR61 requirements.

2.10. Compaction: When dry wastes such as paper, wood, plastic, cardboard, incinerator ash, and etc. are volume reduced through the use of a compactor.

2.11. Waste Streams: Consist of but are not limited to

- Filter media (powdered, bead resin and fiber),

- Filter cartridges,

- Pre-coat body feed material,

- Contaminated charcoal,

RW-AA-100 Revision 7 Page 3 of 9

- Fuel pool activated hardware,

- Oil Dry absorbent material added to a container to absorb liquids

- Fuel Pool Crud

- Sump and tank sludges,

- High activity filter cartridges,

- Concentrated liquids,

- Contaminated waste oil,

- Dried sewage or wastewater plant waste,

- Dry Active Waste (DAW): Waste such as filters, air filters, low activity cartridge filters, paper, wood, glass, plastic, cardboard, hoses, cloth, and metals, etc, which have become contaminated as a consequence of normal operating, housekeeping and maintenance activities.

Other radioactive waste generated from cleanup of inadvertent contamination.

3. RESPONSIBILITIES 3.1. Implementation of this Process Control Program (PCP) is described in procedures at each station and is the responsibility of the each site to implement.
4. MAIN BODY 4.1. Process Control Program Requirements 4.1.1. A change to this PCP (Radioactive Waste Treatment Systems) may be made provided that the change is reported as part of the annual radioactive effluent release report, Regulatory Guide 1.21, and is approved by the Plant Operations' Review Committee (PORC).

4.1.2. Changes become effective upon acceptance per station requirements.

4.1.3. A solidification media, approved by the burial site, may be REQUIRED when liquid radwaste is solidified to a stable/unstable state.

4.1.4. When processing liquid radwaste to meet solidification stability using a vendor supplied solidification system:

1. If the vendor has its own Quality Assurance (QA) Program, then the vendor shall ADHERE to its own QA Program and shall have SUBMITTED its process system topical report to the NRC or agreement state.
2. If the vendor does not HAVE its own Quality Assurance Program, then the vendor shall ADHERE to an approved Quality Assurance Topical Report standard belonging to the Station or to another vendor.

RW-AA-100 Revision 7 Page 4 of 9 4.1.5. The vendor processing system(s) is/are controlled per the following:

1. A commercial vendor supplied processing system(s) may be USED for the processing of LLRW streams.
2. Vendors that process liquid LLRW at the sites shall MEET applicable QA Topical Report and Augmented Quality Requirements.

4.1.6. Vendor processing system(s) operated at the site shall be OPERATED and CONTROLLED in accordance with vendor approved procedures or station procedures based upon vendor approved documents.

4.1.7. All waste streams processed for burial or long term on-site storage shall MEET the waste classification and characteristics specified in 10CFR Part 61.55, Part 61.56, the 5-83 Branch Technical Position for waste classification, and the applicable burial site acceptance criteria (for any burial site operating at the time the waste was processed).

4.2. General Waste Processing Requirements NOTE: On-site resin processing involves tank mixing and settling, transferring to the station or vendor processing system via resin water slurry or vacuuming into approved waste containers, and, when applicable, dewatering for burial.

4.2.1. Vendor resin beds may be USED for decontamination of plant systems, such as, Spent Fuel Pool, RWCU (reactor water cleanup), and SDC (Shut Down Cooling).

These resins are then PROCESSED via the station or vendor processing system.

4.2.2. Various drains and sump discharges will be COLLECTED in tanks or suitable containers for processing treatment. Water from these tanks may be SENT through a filter, demineralizer, concentrator or vendor supplied processing systems.

4.2.3. Process waste (e.g. filter media, sludges, resin, etc) will be periodically DISCHARGED to the station or vendor processing system for onsite waste treatment or PACKAGED in containers for shipment to offsite vendor for volume reduction processing.

4.2.4. Process water (e.g. chemical, floor, equipment drain, etc.) may be SENT to either the site waste process systems or vendor waste processing systems for further filtration, demineralization for plant re-use, or discharge.

4.2.5. All dewatering and solidification/stabilization will be PERFORMED by either utility site personnel or by on-site vendors or will be PACKAGED and SHIPPED to an off-site vendor low-level radwaste processing facility.

RW-AA-100 Revision 7 Page 5 of 9 4.2.6, Dry Active Waste (DAW) will be HANDLED and PROCESSED per the following:

1. DAW will be COLLECTED and SURVEYED and may be SORTED for compactable and non-compactable wastes.
2. "DAW may be packaged in containers to facilitate on-site pre-compaction and/or off-site vendor contract requirements
3. DAW items may be SURVEYED for release onsite or offsite when applicable.
4. Contaminated filter cartridges will be PLACED into a HIC or will be ENCAPSULATED in an in-situ liner for disposal or SHIPPED to an offsite waste processor in drums, boxes or steel liners per the vendor site criteria for processing and disposal.

4.2.7. Filtering devices using pre-coat media may be USED for the removal of suspended solids from liquid waste streams. The pre-coat material or cartridges from these devices may be routinely REMOVED from the filter vessel and discharged to a Filter Sludge Tank or Liner/HIC. Periodically, the filter sludge may be DISCHARGED to the vendor processing system for waste treatment onsite or PACKAGED in containers for shipment to offsite vendor for volume reduction processing.

4.2.8. Activated hardware stored in the Spent Fuel Pools will be PROCESSED periodically using remote handling equipment and may then be PUT into a container for shipment or storage 4.2.9. High Integrity Containers (HIC):

1. For Barnwell disposal vendors who supply HIC's to the station shall PROVIDE a copy of the HIC Certificate of Compliance, which details specific limitations on use of the HIC.
2. For Disposal at Clive vendors who supply HIC's to the station shall PROVIDE a copy of the HIC Certificate of Conformance, which details specific limitations on use of the HIC.
3. Vendors who supply HIC's to the station shall PROVIDE a handling procedure, which establishes guidelines for the utilization of the HIC. These guidelines serve to protect the integrity of the HIC and ensure the HIC is handled in accordance with the requirements of the Certificate of Compliance or Certificate of Conformance.

4.2.10. Lubricants and oils contaminated as a consequence of normal operating and maintenance activities may be PROCESSED on-site (by incineration, for oils meeting 10CFR20.2004 and applicable state requirements, or by an approved vendor process) or SHIPPED offsite (for incineration or other acceptable processing method).

4.2.11. Former in-plant systems GE or Stock Drum Transfer Cart and Drum Storage Areas may be USED for higher dose DAW storage at Clinton, Dresden, Quad Cities, Braidwood and Byron.

RW-AA-100 Revision 7 Page 6 of 9 4.2.13 Certain waste, including flowable solids from holding pond, oily waste separator, cooling tower basin and emergency spray pond, may be disposed of onsite under the provisions of 10CFR20.2002 permit. Specific requirements associated with the disposal shall be incorporated into station implementing procedures. (CM-2) 4.3. Burial Site Requirements 4.3.1. Waste sent directly to burial shall COMPLY with the applicable parts of 49CFR171-172, 10CFR61, 10CFR71, and the acceptance criteria for the applicable burial site.

4.4. Shipping and Inspection Requirements 4.4.1. All shipping/storage containers shall be INSPECTED, as required by station procedures, for compliance with applicable requirements (Department Of Transportation (DOT), Nuclear Regulatory Commission (NRC), station, on-site storage, and/or burial site requirements) prior to use.

4.4.2. Containers of solidified liquid waste shall be INSPECTED for solidification quality and/or dewatering requirements per the burial site, offsite vendor acceptance, or station acceptance criteria, as applicable.

4.4.3. Shipments sent to an off site processor shall be INSPECTED to ensure that the applicable processor's waste acceptance criteria are being met.

4.5. Inspection and Corrective Action 4.5.1. Inspection results that indicate non-compliance with applicable NRC, State, vendor, or site requirements shall be IDENTIFIED and TRACKED through the Corrective Action Program.

4.5.2. Administrative controls for preventing unsatisfactory waste forms from being released for shipment are described in applicable station procedures. If the provisions of the Process Control Program are not satisfied, then SUSPEND shipments of defectively packaged radioactive waste from the site. (CM-1) 4.5.3. If freestanding water or solidification not meeting program requirements is observed, then samples of the particular series of batches shall be TAKEN to determine the cause. Additional samples shall be TAKEN, as warranted, to ensure that no freestanding water is present and solidification requirements are maintained.

4.6. Procedure and Process Reviews 4.6.1. The Exelon Nuclear Process Control Program and changes to it (other than editorial/minor changes) shall be REVIEWED and APPROVED in accordance with the station procedures, plant-specific Technical Specifications (Tech Spec),

Technical Requirements Manual (T&RM), Operation Requirements Manual (ORM),

as applicable, for the respective station and LS-AA-106. Changes to the Licensees Controlled Documents, UFSAR, ORM, or TRM are controlled by the provisions of 10CFR 50.59.

RW-AA-1000 Revision 7 Page 7 of 9 4.6.2. Any changes to the PCP shall be reviewed to determine if reportability is required in the Annual Radiological Effluent Release Report (ARERR). The Radwaste Specialist shall ensure correct information is SUBMITTED to the ODCM program owner prior to submittal of the ARERR.

4.6.3. Station processes, cask manual procedures as applicable to your station, or other vendor waste processing/operating procedures shall be approved per RM-AA-1 02-1006. Procedures related to waste manifests, shipment inspections, and container activity determination are CONTROLLED by Radiation Protection Standard Procedures (RP-AA-600 Series).

1. Site waste processing IS CONTROLLED by site operating procedures.
2. Liquid processed by vendor equipment shall be DONE in accordance with vendor procedures.

4.7. Waste Types, Point of Generation, and Processinq Method Methods of processing and individual vendors may CHANGE due to changing financial and regulatory options. The table below is a representative sample. It is not intended be all encompassing.

AVAILABLE WASTE WASTE STREAM POINTS OF GENERATION POEING ME PROCESSING METHODS Bead Resin Systems - Fuel Pool, Condensate, Dewatering, solidification to an Reactor Water Cleanup, Blowdown, unstable/stable state Equipment Drain, Chemical and Volume Control Systems, Floor Drain, Maximum Recycle, Blowdown, Boric Free Release to a Land Fill Acid Recycling System, Vendor Supplied Processing Systems, and Portable Demin System Powdered Resin Systems - (Condensate System, Floor Dewatering, solidification to an Drain/Equipment Drain filtration, Fuel unstable/stable state Pool) Thermal Processing Concentrated Waste Waste generated from Site Solidification to an unstable/stable Evaporators resulting typically from the state Floor Drain and Equipment Drain Thermal Processing Systems ThermalProcessing Sludge Sedimentation resulting from various Dewatering, solidification to an sumps, condensers, tanks, cooling unstable/stable state tower, emergency spray pond, holding Thermal Processing pond, and oily waste separators..

Evaporation on-site or at an offsite processor On-site disposal per 10CFR20.2002 I permit

RW-AA-100 Revision 7 Page 8 of 9 AVAILABLE WASTE WASTE STREAM POINTS OF GENERATION PROCESSING METHODS Filter cartridges Systems - Floor/Equipment Drains, Dewatering, solidification to an Fuel Pool; cartridge filters are typically unstable/stable state generated from clean up activities Processed by a vendor for volume within the fuel pool, torus, etc. reduction Dry Active Waste Paper, wood, plastic, rubber, glass, Decon/Sorting for Free Release, metal, and etc. resulting from daily Compaction/Super-compaction plant activities.

Thermal Processing by Incineration or glass vitrification Sorting for Free Release Metal melting to an ingot Contaminated Oil Oil contaminated with radioactive Solidification unstable state materials from any in-plant system. Thermal Processing by Incineration Free Release for recycling Drying Bed Sludge Sewage Treatment and Waste Water Free release to a landfill or burial Treatment Facilities Metals See DAW See DAW Irradiated Hardware Fuel Pool, Reactor Components Volume Reduction for packaging efficiencies

5. DOCUMENTATION 5.1.1. Records of reviews performed shall be retained for the duration of the unit operating license. This documentation shall contain:
1. Sufficient information to support the change together with the appropriate analyses or evaluations justifying the change, and
2. A determination which documents that the change will maintain the overall conformance of waste products to Federal (10CFR61 and the Branch Technical Position), State, or other applicable requirements, including applicable burial site criteria.
6. REFERENCES 6.1. Technical Specifications:

6.1.1. The details contained in Current Tech Specs (CTS) or Improved Technical Specifications (ITS), as applicable, in regard to the Process Control Program (PCP),

are to be relocated to the Licensee Controlled Documents. Some facilities have elected to relocate these details into the Operational Requirements Manual (ORM).

Relocation of the description of the PCP from the CTS or ITS does not affect the safe operation of the facility. Therefore, the relocation details are not required to be in the CTS or the ITS to provide adequate protection of the public health and safety.

RW-AA-100 Revision 7 Page 9 of 9 6.2. Writers'

References:

6.2.1. Code Of Federal Regulations: 10 CFR Part 20, Part 61, Part 71, 49 CFR Parts 171-172 6.2.2. Low Level Waste Licensing Branch Technical Position On Radioactive Waste Classification, May 1983 6.2.3. Technical Position on Waste Form (Revision 1), January 1991 6.2.4. Branch Technical Position on Concentration Averaging and Encapsulation, January 1995 6.2.5. Regulatory Guide 1.21 6.2.6. I.E. Circular 80.18, 10CFR 50.59 Safety Evaluation for Changes to Radioactive Waste Treatment Systems 6.3. User References 6.3.1. Quality Assurance Program 6.3.2. LS-AA-106 6.3.3. RM-AA-102-1006 6.3.4. RP-AA-600 Series 6.3.5. CY-AA-1 70-2000, Annual Radioactive Effluent Release Report 6.4. Station Commitments:

6.4.1. Peach Bottom CM-1, T03819, Letter from G.A. Hunger, Jr., dated Sept. 29,94, transmitting TSCR 93-16 (Improved Technical Specifications).

6.4.2. Limerick CM-2, T03896, 10CFR20.2002 permit granted to Limerick via letter dated July 10, 1996.

7. ATTACHMENTS '- None