ML071230061

Radioactive Effluent Release Report No. 49, for 01/01/2006 - 12/31/2006

ML071230061
Person / Time
Site:	Peach Bottom
Issue date:	04/27/2007
From:	Grimes J Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML071230061 (96)

Text

Exelon Nuclear www.exeloncorp.com Exekln. Nuclear Peach Bottom Atomic Power Station 1848 Lay Road Delta, PA 17314-9032 April 27, 2007 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Peach Bottom Atomic Power Station Unit Nos. 2 and 3 and Independent Spent Fuel Storage Installation (ISFSI)

Facility Operating License Nos. DPR-44 and DPR-56 NRC Docket Nos. 50 - 277 and 50 - 278 and ISFSI Docket 72-29 and Unit 1 Docket No. 50-171

SUBJECT:

Radioactive Effluent Release Report No. 49 January 1, 2006 through December 31, 2006 Enclosed are two copies of the Radioactive Effluent Release Report No. 49, January 1, 2006, through December 31, 2006, for Peach Bottom Atomic Power Station Unit Nos. 2 and 3.

This report is being submitted in compliance with 10CFR 50.36 a (2) and the Technical Specifications of Operating Licenses DPR-44 and DPR-56, and to fulfill the requirements of Regulatory Guide 10.1. Additionally, this report is submitted to satisfy annual effluent reporting requirements for the ISFSI required by Offsite Dose Calculation Manual (ODCM).

No revisions were made to the Offsite Dose Calculation Manual or the Process Control Program (PCP).

There are no commitments contained in this letter.

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

Since I Jos h P. Grimes Site ice President Peach Bottom Atomic Power Station Enclosures (2) cc: S.J. Collins, Administrator, Region 1, US NRC J. J. Shea, Project Manager, US NRC F. Bower, US NRC Senior Resident Inspector, PBAPS A4 CCN 07-49 LtmSSo/

PEACH BOTTOM ATOMIC POWER STATION Unit Numbers 2 and 3 Docket Numbers 50-277 and 50-278 Unit Number 1 Docket Number 50-171 PBAPS Independent Spent Fuel Storage Installation Docket Number 72-29 RADIOACTIVE EFFLUENT RELEASE REPORT NO. 49 JANUARY 1, 2006 THROUGH DECEMBER 31, 2006 Submitted to The United States Nuclear Regulatory Commission Pursuant to Facility Operating Licenses DPR-44 and DPR-56

(Page Intentionally Left Blank)

TABLE OF CONTENTS SECTION PAGE Introduction 1 Supplemental Information 3 Regulatory Limits 5 Maximum Permissible Concentrations 6 Average Energy 6 Measurements and Approximations of Total Radioactivity 6 Batch Releases 8 Average Stream Flow 9 Abnormal Releases 9 Changes to ODCM 12 Minimum Detectable Concentrations 12 Violations 13 Effluent Summary 15 Gaseous Effluents - Summation of All Releases 17 Gaseous Effluents for Elevated Release Point - Main Stack 18 Gaseous Effluents for Ground Level Release Points - 19 Unit 2 and Unit 3 Roof Vents & Aux Boiler Stack Liquid Effluents - Summation of All Releases 20 Liquid Effluents Release Points - Liquid Radwaste, RHR Leaks 21 Solid Waste and Irradiated Fuel Shipments 23 Solid Waste Shipped 25 Irradiated Fuel Shipments 27 Changes to Process Control Program (PCP) 27 Radiological Impact on Man 29 Radiological Impact on Man 31 Summary of Gaseous and Liquid Annual Doses 31 Liquid and Gaseous Effluent Radiation Monitors 31 Meteorological Data 33 Technical Concurrences: (for accuracy of information)

Chemistry / Radwaste Manager

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC INTRODUCTION In accordance with the Reporting Requirements of Technical Specification 5.6.3 applicable during the reporting period, this report summarizes the Effluent Release Data for Peach Bottom Atomic Power Station Units 2 and 3 for the period January 1, 2006 through December 31, 2006. The notations E and E- are used to denote positive and negative exponents to the base 10, respectively.

The release of radioactive materials during the. reporting period was within the Offsite Dose Calculation Manual Specification limits.

There were five unplanned releases of liquid radioactive material. Three releases from RHR heat exchangers, one from the Unit 1 Radwaste Sump, and one from a groundwater tritium plume. The Unit 1 release is reported in accordance with Unit 1 Technical Specification 2.4.

There were no gaseous or liquid radioactive releases from the Independent Spent Fuel Storage Installation, NRC Docket No. 72-29 (ISFSI).

There was a change to RW-AA-100 "Process Control Program for Radioactive Waste". A copy of the revised procedure is attached.

There were no changes to the ODCM during this reporting period.

Exelon common procedures, which provide consistent expectations and standards for Radioactive Effluents Controls Program, were used to generate this report. They are:

• CY-AA-170-000, Radioactive Effluent and Environmental Monitoring Program

• CY-AA-170-100, Radiological Environmental Monitoring Program

• CY-AA-170-200, Radioactive Effluent Controls Program

• CY-AA-1 70-300, Offsite Dose Calculation Manual Administration

• CY-AA-170-2000, Annual Radioactive Effluent Release Report

• CY-AA-170-2100, Estimated Errors of Effluent Measurement

• CY-AA-170-3100, Offsite Dose Calculation Manual Revisions I

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 2

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 1 Supplemental Information 3

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 4

Company, LLC 2&3 Licensee: Exelon Generation Facility: Peach Bottom Units PSEG Nuclear, LLC

1. Regulatory Limits A. Noble Gases:

ODCMS 3.8.C.1 .a

- total body

1.

• 500 mRem/Yr

- skin

<'3000 mRem/Yr quarterly air dose limits

- air gamma and b

2. <10 mRad ODCMS 3.8.C.2.a mRad - air beta

<20 yearly air dose limits

- air gamma and d

3. < 20 mRad ODCMS 3.8.C.2.c mRad - air beta

< 40 Particulates with Half Life >8 days, B. lodines, Tritium, ODCMS 3.8.C.1 .b

< 1500 mRem/Yr - any organ 1.

quarterly dose limits mRem - any organ ODCMS 3.8.C.3.a

2. *15 yearly dose limits

- any organ

3. *30 mRem ODCMS 3.8.C.3.b C. Liquid Effluents ODCMS 3.8.B.1.a times 10 CFR 20,

1. Concentration < 10 Col. 2 2,

Appendix B, Table quarterly dose limits

- total body

2. *3.0 mRem ODCMS 3.8.B.2.a mRem - any organ e10 yearly dose limits

- total body

3.

• 6.0 mRem ODCMS 3.8.B.2.b mRem - any organ

<'20 10 CFR 72.104 D. 40 CFR 190 and ODCMS 3.8.D.1.a

- total body

• 25 mRem ODCMS 3.8.D.1.b mRem - thyroid ODCMS 3.8.D.l.c

-- 75 mRem - any other organ ODCMS 3.8.D.1.d

• 25 - from liquid and

,3.0 mRem gaseous effluent ODCMS 3.8.D.1 .e mRem

- thyroid from gases

< 55 5

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC

2. Maximum Permissible Concentrations:

Gaseous dose rates rather than effluent concentrations are used to calculate permissible release rates for gaseous releases. The maximum permissible dose rates for gaseous releases are defined in ODCMS 3.8.C.la. and 3.8.C.1 .b.

The Effluent Concentrations Limits (ECL) specified in 10 CFR 20, Appendix B, Table 2, Column 2 times 10, for identified nuclides, are used to calculate permissible release rates and concentrations for liquid release per Peach Bottom Offsite Dose Calculation Manual Specification 3.8.B.1.

The total activity concentration for all dissolved or entrained gases is limited to

< 2E-04 ltCi/ml.

3. Average Energy:

The Peach Bottom ODCM limits the dose equivalent rates due to the release of noble gases to less than or equal to 500 mRem/year to the total body and less than or equal to 3000 mRem/year to the skin. Therefore, the average beta and gamma energies of the radionuclide mixture in releases of fission and activation gases as described in Regulatory Guide 1.21, "Measuring, Evaluation, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Nuclear Power Plants," are not applicable to Peach Bottom.

4. Measurements and Approximations of Total Radioactivity:

A. Fission and Activation Gases:

The method used for Gamma Isotopic Analysis is the Canberra Genie System with a gas Marinelli beaker. Grab samples are taken and analyzed at least monthly to determine the isotopic mixture of noble gas activity released for the month. Airborne effluent gaseous activity was continuously monitored and recorded in accordance with ODCMS Table 4.8.C.1. The data from the noble gas radiation monitor was analyzed to report noble gas effluent activities. When no activity was found in the grab isotopic analysis, the isotopic mixture was assumed to be that specified in ODCM IV.B. The activity released is listed as Unidentified in the Attachment 2 Tables. If activity was found in the grab isotopic analysis, the isotopic mixture for the Noble Gas Monitor was determined from that isotopic mixture.

B. lodines:

The method used is the Canberra Genie System with a charcoal cartridge.

Iodine activity was continuously sampled and analyzed in accordance with 6

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC ODCMS Table 4.8.C.1.

C. Particulates:

The method used is the Canberra-Genie System with a particulate filter (47 mm).

Particulate activity was continuously sampled and analyzed in accordance with ODCM Table 4.8.C.1.

Composite particulate air samples were submitted to an offsite vendor laboratory for analysis of Sr-89, Sr-90 and gross alpha.

D. Liquid Effluents:

Gamma isotopic activity concentrations are determined on each batch of liquid effluent prior to release using the Canberra Genie System in accordance with ODCMS Table 4.8.B.1. The total activity of a released batch is determined by multiplying each nuclide's concentration by the total volume discharged.

Composite liquid radwaste samples counted for tritium and submitted to an offsite vendor laboratory for analysis of Fe-55, P-32, Sr-89, Sr-90 and gross alpha.

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

7

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC

5. Batch Releases:

A. Liquid:

QTR 1 QTR 2 QTR 3 QTR 4 Number of batch releases: 8 10 11 17 Total Time for batch releases (minutes) 849 1155 2074 3746 Maximum time period for batch release 280 288 285 310 (minutes):

Average time period for batch release 106 116 189 220 (minutes):

Minimum time period for batch release 30 36 45 40 (minutes):

Dilution volume (liters): 2.80E9 5.90E9 6.81E9 1.51E10 B. Gaseous:

QTR 1 QTR 2 QTR 3 QTR 4 Number of batch releases: 0 0 0 0 Total Time for batch releases (minutes) 0 0 0 0 Maximum time period for batch release 0 0 0 0 (minutes):

Average time period for batch release 0 0 0 0 (minutes):

Minimum time period for batch release 0 0 0 0 (minutes): I I I I _I 8

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC

6. Average Stream Flow:

The river flow is not used for dose calculations. The actual discharge of circulating water is used for liquid dose calculations. The circulating water varies from 675,000 gpm in the winter to 1,350,000 gpm in the summer.

7. Abnormal Releases: Five abnormal release sources A. Liquid:

1. Event description - 2C Residual Heat Removal (RHR) to High Pressure Service Water (HPSW) leak On 08/01/2005, routine sampling of the HPSW effluent to the discharge canal detected low-level radioactive contamination. Subsequent investigation determined that a trace amount of condensate stay-full or primary coolant water was leaking through the Unit 2C RHR heat exchanger into the 2A loop of the HPSW system. The 2C RHR continued to be a source of contamination to the end of 2006. The leak rate was 0.02 gpm from January to October, then increased to 0.103 gpm through the end of the year.

Analysis of Releases It was estimated that the contaminated water released to the discharge canal for all of 2006 was responsible for 1.26E-03 mRem total body dose (Adult), and 3.08E-03 mRem Critical Organ (Adult GI-LLI) dose. This dose contribution was well below the limits specified in the ODCM.

Samples were analyzed for all the parameters of radioactive effluent releases. Composite liquid radwaste samples counted for tritium and submitted to an offsite vendor laboratory for analysis of Fe-55, P-32, Sr-89, Sr-90 and gross alpha. The maximum concentration from several analyses was used to ensure conservative measures of activity released.

The dose contributions and isotope quantities from the releases were added to this Radioactive Effluent Release Report for the applicable reporting periods.

2. Event description - 2D Residual Heat Removal (RHR) to High Pressure Service Water (HPSW) leak On 10/07/2005, routine sampling of the HPSW effluent to the discharge canal detected low-level radioactive contamination. Subsequent investigation determined that a trace amount of condensate stay-full or primary coolant 9

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC water was leaking through the Unit 2D RHR heat exchanger into the 26 loop of the HPSW system. The 2D RHR continued to be a source of contamination to the end of 2006. The leak rate was 0.0189 gpm from January to April, then decreased to 0.00942 gpm until October, then increased to 0.0372 gpm through the end of the year.

Analysis of Releases It was estimated that the contaminated water released to the discharge canal for all of 2006 was responsible 6.89E-04 mRem total body dose (Adult), and 1.35E-03 mRem Critical Organ (Adult GI-LLI) dose. This dose contribution was well below the limits specified in the ODCM.

Samples were analyzed for all the parameters of radioactive effluent releases. Composite liquid radwaste samples counted for tritium and submitted to an offsite vendor laboratory for analysis of Fe-55, P-32, Sr-89, Sr-90 and gross alpha. The maximum concentration from several analyses was used to ensure conservative measures of activity released.

The dose contributions and isotope quantities from the releases were added to this Radioactive Effluent Release Report for the applicable reporting periods.

3. Event description - 3D Residual Heat Removal (RHR) to High Pressure Service Water (HPSW) leak On 2/13/2006, routine sampling of the HPSW effluent to the discharge canal detected low-level radioactive contamination. Subsequent investigation determined that a trace amount of condensate stay-full or primary coolant water was leaking through the Unit 3D RHR heat exchanger into the 2B loop of the HPSW system. The 3D RHR continued to be a source of contamination to the end of 2006. The 3D RHR leak was repaired on January 27, 2007. The leak rate was 0.016 gpm from February to July 15, then increased to 0.132 gpm through the end of the year.

Analysis of Releases It was estimated that the contaminated water released to the discharge canal was responsible 1.57E-03 mRem total body dose (Adult), and 2.81 E-02 mRem Critical Organ (Adult GI-LLI) dose. This dose contribution was well below the limits specified in the ODCM.

Samples were analyzed for all the parameters of radioactive effluent 10

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC releases. Composite liquid radwaste samples counted for tritium and submitted to an offsite vendor laboratory for analysis of Fe-55, P-32, Sr-89, Sr-90 and gross alpha. The maximum concentration from several analyses was used to ensure conservative measures of activity released.

The dose contributions and isotope quantities from the releases were added to this Radioactive Effluent Release Report for the applicable reporting periods.

4. Event description - Unit 1 Radwaste Sump On July 6, 2006, routine sampling of the Unit 1 Radwaste Sump showed no gamma activity and was released to the discharge canal. Analysis of water in the Unit 1 Radwaste Sump was analyzed January 3, 2007 for gamma activity and tritium. The gamma analysis showed no activity but the tritium was measured to be 9.62E-6 uCi/ml. This tritium was assumed to be the concentration of the July 6, 2006 release.

Analysis of Release It was estimated that the contaminated water released to the discharge canal was responsible for 3.21 E-09 total body dose, and 3.21 E-09 mRem Critical Organ (Child Liver) dose. This dose contribution was well below the limits specified in the ODCM.

Representative samples were analyzed for gamma activity and tritium.

The dose contributions and isotope quantities from the releases were added to this Radioactive Effluent Release Report for the applicable reporting periods.

5. Event description - Ground Water Plume During 2006, during the development of the Radiological Ground Water Protection Program (RGPP), tritium was measured at several locations around the site. The ground water that has detectable tritium has been determined to discharge into the inake or discharge canal. The highest concentration of tritium was 1.04E-06 uCi/ml. This concentration was assumed to be the concentration of all the ground water that discharged to the discharge canal.

Analysis of Releases It was estimated that the ground water flowed to the discharge canal at a rate of 175 gpm. With the maximum concentration of 1.01 E-06 uCi/ml, the ground water released to the discharge canal was responsible for 4.02E-06 total body dose, and 4.02E-06 mRem Critical Organ dose. This dose contribution was well below the limits specified in the ODCM.

11

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC B. Gaseous:

No abnormal releases.

8. Changes to the ODCM:

There were no changes to the ODCM during this reporting period.

9. Minimum Detectable Concentrations:

A. Liquid:

If a radionuclide was not detected, < LLD was reported for that isotope.

Samples were analyzed with techniques that achieved the required Lower Limits of Detection (LLD) as specified in Offsite Dose Calculation Manual Specification Table 4.8.B.1, Radioactive Liquid Waste Sampling and Analysis. In all but one case, the LLD requirements were satisfied. In that case the sample was counted late and the LLDs were no met.

B. Gaseous:

If a radionuclide was not detected, < LLD was reported for that isotope.

Samples were analyzed with techniques which achieved the required Lower Limits of Detection (LLD) as specified in Offsite Dose Calculation Manual Specification Table 4.8.C.1, Radioactive Gaseous Waste Sampling and Analysis from Main Stack and Vent Stack. In all cases, the LLD requirements were satisfied.

12

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC

10. Violations:

A. ODCMS 4.8.C.1.2 In one case the particulate filters and charcoal cartridges were not analyzed within the 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> as required by ODCMS Table 4.8.C.1 Footnote (c). The cause was the normal filter channel was found to be not operable and the alternate channel analyzed late. The 1-131 concentration was accurate and I-133 was added based on historical values.

B. Technical Specification 5.4.1.c Technical Specification 5.4.1 .c requires Quality Assurance for effluent and environmental monitoring. There were several instance of particulate filter by-pass that would result in up to 30% of the particulate matter not being collected on the filters. There was no evidence of iodine cartridge by-pass. The limiting doses for the thyroid calculated were not affected. The activities released were affected. The values in this report represent the corrected activities.

13

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 14

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 2 Effluent Summary 15

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 16

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 2 Gaseous Effluents - Summation Of All Releases Period: 2006 Unit: Peach Bottom Units 2 & 3 A. Fission & Activation Gases Quarter Quarter Quarter Quarter Year Est. Total 1 2 3 4 2006 Error %

1. Total Release Ci 2.60E+02 2.92E+02 2.15E+02 2.53E+02 1.02E+03 3.51E+01

2. Average release rate for the pCi/sec 3.31 E+01 3.71 E+01 2.74E+01 3.22E+01 3.24E+01 period 1

3. Percent of ODCM limit 5.23E-01 6.03E-01 2.94E-01 4.03E-01 9.12E-01

- Gamma  %

- Beta 1.79E-01 2.07E-01 1.02E-01 1.39E-01 3.13E-01

4. Gamm Air Dose mrad 5.23E-02 6.03E-02 2.94E-02 4.03E-02 1.82E-01

5. Beta Air Dose mrad 3.57E-02 4.14E-02 2.03E-02 2.77E-02 1.25E-01 B. Iodine

1. Total iodine - 131 Ci 1.27E-03 1.85E-03 2.26E-03 1.33E-03 6.70E-03 1.76E+01

2. Average release rate for period _Ci/sec 1.61E-04 2.35E-04 2.87E-04 1.69E-04 2.12E-04

,3. Percent of ODCM limit  % L..

C. Particulates

1. Particulates with half-lives Ci 5.77E-04 5.56E-04 7.42E-04 1.68E-03 3.55E-03 1.94E+01

> 8 days _

2. Average release rate for the pCi/sec 7.34E-05 7.08E-05 9.44E-05 2.13E-04 1.13E-04 period

3. Percent of ODCM limit  % *.....

4. Gross alpha radioactivity Ci <LLD <LLD <LLD <LLD <LLD D. Tritium

1. Total release Ci <LLD 7.78E+00 1.35E+01 2.08E+01 4.20E+01 1.11E+011

2. Average release rate for the 1.71 E+O0 pCi/sec <LLD 9.90E-01 2.64E+00 I 1.33E+00 period

3. Percent of ODCM limit  % .....

E. Iodine 131 & 133,Tritium &

Particulate

1. Percent of ODCM limit  % 6.OOE-02 9.13E-02 1.05E-01 6.23E-02 1.59E-01

2. Dose mrem 9.OOE-03j 1.37E-021 1.58E-02 9.34E-031 4.78E-02

• Limit is no longer applicable to iodine and particulate. Section E provides limit.

17

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 2 Gaseous Effluents for Elevated Release Point - Main Stack Period: 2006 Unit: Peach Bottom Units 2 & 3 NUCLIDES RELEASED I CONTINUOUS MODE _ BATCH MODE

1. Fission gases Unit I Quarter I Quarter Quarter Quarter Quarter Quarter Quarter Quarter Kr-85 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Kr-85m Ci 9.66E+00 8.14E+00 9.OOE+00 1.46E+01 <LLD <LLD <LLD <LLD Kr-87 Ci <LLD 4.42E-01 2.65E-01 4.53E-01 <LLD <LLD <LLD <LLD Kr-88 Ci 2.91E+00 3.15E+00 3.36E+00 7.43E+00 <LLD <LLD <LLD <LLD Xe-133 Ci 2.19E+01 2.17E+01 2.86E+01 2.57E+01 <LLD <LLD <LLD <LLD Xe-135 Ci 3.11E+00 3.35E+00 1.11E+01 2.86E+00 <LLD <LLD <LLD <LLD Xe-135m Ci 1.19E+00 <LLD 1.45E+01 7.59E+00 <LLD <LLD <LLD <LLD Xe-138 Ci 1.43E+01 2.03E+01 3.53E+01 3.83E+01 <LLD <LLD <LLD <LLD Ar-41 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-1 33m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Unidentified Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total for Period Ci 5.31 E+01 5.71 E+01 1.02E+02 9.69E+01 <LLD <LLD <LLD <LLD

12. lodines l..1 <____ ____I 1-131 Ci 3.08E-04 3.46E-04 6.42E-04 4.08E-04 <LLD <LLD <LLD <LLD 1-133 Ci 6.09E-04 8.95E-04 1.56E-03 9.66E-04 <LLD <LLD <LLD <LLD 1-135 Ci 1.02E-04 6.53E-04 9.08E-04 3.64E-04 <LLD <LLD <LLD <LLD Total for Period Ci 1.02E-03 1.89E-03 3.11E-03 1.74E-03 <LLD <LLD <LLD <LLD

3. Particulates I EI1.- , _. .

Sr-89 Ci 2.52E-04 1.60E-04 2.57E-04 6.47E-04 <LLD <LLD <LLD <LLD Sr-90 Ci 2.47E-07 1.04E-07 1.28E-07 2.08E-06 <LLD <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cs137 Ci 8.48E-07 2.45E-05 2.52E-06 1.30E-06 <LLD <LLD <LLD <LLD Ba-140 Ci 1.61E-04 1.15E-04 1.27E-04 8.65E-04 <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD 9.50E-07 2.76E-06 <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD 1.54E-06 <LLD <LLD <LLD <LLD <LLD Co-60 Ci <LLD 4.07E-06 1.18E-05 7.32E-06 <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ag-110m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD 9.82E-07 <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Nb-95 Ci <LLD <LLD <LLD 1.04E-06 <LLD <LLD <LLD <LLD Sb-1 25 Ci <LLD <LLD <LLD 1.72E-06 <LLD <LLD <LLD <LLD Zn-65 Ci <LLD 7.OOE-07 1.05E-06 2.90E-06 <LLD <LLD <LLD <LLD Total for Period Ci 4.14E-04 3.04E-04 4.02E-04 1.53E-03 <LLD <LLD <LLD <LLD 18

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 2 Gaseous Effluents Ground Level Release Point - Unit 2 & 3 Roof Vents & Aux Boiler Stack Period: 2006 Unit: Peach Bottom Units 2 & 3 Nuclides Released 1 Continuous Mode 1_ Batch Mode _ _

I1

1. Fission gasesi Unit Quarter Quarter Quarter Quarter 4 Quarter Quarter2 Quarter3 Quarter4 Kr-85 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Kr-85m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Kr-87 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-1_35 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-135m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-1 38 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ar-41 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-1 33m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Unidentified Ci 2.07E+02 2.35E+02 1.13E+02 1.56E+02 <LLD <LLD <LLD <LLD Total for Period Ci 2.07E+02 2.35E+02 1.13E+02 1.56E+02 <LLD <LLD <LLD <LLD

[12.lodines F....

____-!. .. .... . I.._ __.____I 1-131 Ci 9.59E-04 1.50E-03 1.62E-03 9.17E-04 <LLD <LLD <LLD <LLD 1-133 Ci 3.77E-03 7.35E-03 6.88E-03 4.83E-03 <LLD <LLD <LLD <LLD

-135 Ci <LLD <LLD 2.49E-04 <LLD <LLD <LLD <LLD <LLD Total for Period Ci 4.73E-03 8.85E-03 8.74E-03 5.75E-03 <LLD <LLD <LLD <LLD

13. Particulates J I _ _ _ _ _ _ _ _ _ _ _ _ _.-_ _ _

Sr-89 Ci 1.24E-04 8.63E-05 1.43E-04 1.30E-04 <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cs137 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ba-140 Ci 3.11E-05 1.46E-04 1.69E-04 <LLD <LLD <LLD <LLD <LLD La- 140 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Co-60 Ci 8.22E-06 1.98E-05 2.39E-05 1.50E-05 <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ag-110m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD 4.42E-06 <LLD <LLD <LLD <LLD <LLD Ce-1 44 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ci Ci ITotal for Period Ci 16E02.E-4340E-0411.45E-041 <LLD r-<=LLD <LLD <LL-D-19

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 2 Liquid Effluents - Summation Of All Releases Period: 2006 Unit: Peach Bottom Units 2 & 3 A. FISSION & ACTIVATION Quarter Quarter Quarter Quarter Year Est. Total PRODUCTS 1 2 3 4 2006 Error %

1. Total Release (not including Ci 4.33E-02 5.96E-02 2.30E-01 1.81 E-01 5.14E-01 2.11E+01 tritium, gases & alpha)

2. Average diluted concentration during batch discharges for the pCi/mL 1.55E-08 1.01 E-08 3.37E-08 1.20E-08 period 1

4. Percent of 00CM limit 5.93E-02 4.17E-02 1.65E-01 1.77E-01 2.21 E-01

- Total Body  %

- Organ 2.88E-02 4.01 E-02 7.64E-02 1.08E-01 1.27E-01

5. Total Body Dose mrem 1.78E-03 1.25E-03 4.95E-03 5.30E-03 1.33E-02

6. Organ Dose mrem 2.88E-03 4.01E-03 7.64E-03 1.08E-02 2.53E-02 B. TRITIUM

1. Total Release Ci 8.47E-01 1.OOE+00 2.16E+00 3.79E+00 7.80E+00 6.40E+00

2. Average diluted concentration during batch discharges for the pCi/mL 3.03E-07 1.69E-07 3.17E-07 2.51 E-07 period -I - % 3 - 1 - 3 0 2 0

4. Percent of 10 CFR 20 limit  % 3.03E-02 1.69E-02 3.17E-02 2.51E-02 C. DISSOLVED & ENTRAINED GASES

1. Total Release J Ci 2.85E-05 2.59E-04 1.98E-04 1.55E-03 2.03E-03 12.11E+01

2. Average diluted concentration during batch discharges for the pCi/mL 1.02E-11 4.40E-11 2.91E-11 1.02E-10 period

4. Percent of ODCM limit  % 5.08E-06 2.20E-05 1.45E-05 5.12E-05 ID. GROSS ALPHA ACTIVITY

1. Total release Ci 6.21 E-06 2.60E-05 2.83E-05 2.58E-05 8.63E-05 2.30E+01 E. VOLUME OF WASTE Liters 1.43E+041 1.95E+051 4.98E+05j 9.57E+05 1 1.66E+06j 5.00E+00 IRELEASED (prior to dilution) I F. VOLUME OF DILUTION I WATER USED DURING BATCH Liters 2.80E+09 5.90E+09 6.81E+09 1.51E+10 3.06E+10 2.22E+01 DISCHARGES G. TOTAL VOLUME OF DILUTION WATER USED Liters 1.07E+11 1.70E+11 1.53E+11 6.80E+10 4.97E+11 2.22E+01 CONTINUOUS RELEASE I I 20

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Liquid Effluents Release Point - Liquid Radwaste & RHR Leaks Period: 2006 Unit: Peach Bottom Units 2 & 3 NUCLIDES RELEASED I CONTINUOUS MODE I BATCH MODE __

. Fssiongases Unit Quarter Quarter Quarter Quarter Quarter Quarter Quarter Quarter III I 1 2 3 4 n 1 2 3 A Sr-89 Ci 1.70E-05 1.53E-05 5.51 E-05 3.54E-05 <LLD <LLD <LLD <LLD Sr-90 Ci 5.08E-06 1.04E-05 7.43E-05 4.24E-05 <LLD <LLD <LLD <LLD Cs-134 Ci 2.OOE-04 2.87E-04 1.43E-03 6.83E-04 <LLD <LLD <LLD <LLD Cs-137 Ci 2.45E-04 3.OOE-04 1.47E-03 1.03E-03 2.15E-06 1.62E-06 6.OOE-07 6.06E-07 1-131 Ci <LLD <LLD <LLD 1.31 E-06 <LLD <LLD <LLD 4.57E-06 Co-58 Ci 1.23E-03 1.09E-03 8.83E-04 2.49E-03 <LLD <LLD <LLD 1.30E-05 Co-60 Ci 2.45E-02 3.62E-02 1.73E-01 1.20E-01 1.35E-06 1.94E-06 <LLD 1.24E-04 Fe-59 Ci .19E-03 1.57E-03 6.96E-04 2.17E-03 <LLD <LLD <LLD <LLD Zn-65 Ci 2.18E-03 2.98E-03 1.12E-02 9.0OE-03 <LLD <LLD <LLD 1.11E-04 Mn-54 Ci 8.16E-03 1.04E-02 3.73E-02 3.08E-02 8.77E-07 1.36E-06 2.13E-07 <LLD Cr-51 Ci 4.07E-03 5.35E-03 2.34E-04 1.01 E-02 <LLD <LLD <LLD <LLD Zr-95 Ci 1.57E-04 2.09E-04 <LLD 1.73E-05 <LLD <LLD <LLD <LLD Nb-95 Ci 2.04E-04 2.93E-04 6.07E-04 5.02E-04 <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD 7.51 E-06 Tc-99m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD 8.07E-06 Ba-140 Ci <LLD <LLD <LLD 7.90E-05 <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-1 41 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ag-110m Ci 9.43E-05 1.01 E-04 2.41 E-05 <LLD <LLD <LLD <LLD <LLD Fe-55 Ci 9.74E-04 7.50E-04 3.07E-03 3.55E-03 <LLD 4.47E-04 <LLD <LLD P-32 Ci 2.54E-07 5.68E-07 4.06E-06 4.88E-06 2,58E-07 3.52E-06 <LLD <LLD 1-133 Ci 6.77E-06 <LLD 1.85E-06 2.35E-05 <LLD <LLD <LLD <LLD 1-135 Ci <LLD 1.04E-05 <LLD <LLD <LLD <LLD <LLD <LLD Ba-139 Ci <LLD 4.96E-05 <LLD <LLD <LLD <LLD <LLD 1.14E-05 Ce-143 Ci <LLD <LLD 2.85E-06 <LLD <LLD <LLD <LLD 1.00E-05 Co-57 Ci <LLD <LLD <LLD 2.99E-05 <LLD <LLD <LLD <LLD Cs-138 Ci <LLD 2.75E-05 <LLD <LLD <LLD <LLD <LLD <LLD La-1 42 Ci <LLD <LLD 2.96E-06 <LLD <LLD <LLD <LLD <LLD Nb-95m Ci <LLD <LLD 3.92E-06 <LLD <LLD <LLD <LLD <LLD Ru-103 Ci <LLD <LLD 9.O0E-07 <LLD <LLD <LLD <LLD <LLD Ru-105 Ci <LLD <LLD 3.12E-05 <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD 2.43E-04 <LLD <LLD <LLD <LLD Sn-113 Ci <LLD <LLD 1.12E-06 <LLD <LLD <LLD <LLD <LLD Y-91 m Ci <LLD 4.37E-06 <LLD <LLD <LLD <LLD <LLD <LLD Y-93 Ci <LLD <LLD 2.25E-05 <LLD <LLD <LLD <LLD <LLD Zr-97 Ci <LLD <LLD 1.65E-06 <LLD <LLD <LLD <LLD <LLD Total for Period Ci 4.33E-02 5.96E-02 2.30E-01 1.81E-01 4.64E-06 4.55E-04 8.13E-07 2.90E-04 Xe-133 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 21

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 22

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 3 Solid Waste and Irradiated Fuel Shipments 23

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 24

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC A. Solid waste shipped offsite for burial or disposal (not irradiated fuel) 1/1/06 - 12/31/06

1. Type of Waste Est. Error Type of Waste Units 2005 Ci (%)

a. Spent Resin, Filters, Sludges, Evaporator Bottoms, etc. m3 1.72E+02 Ci 2.46E+021 25

b. Dry Compressible Waste, Contaminated Equipment, etc. m3I 7.94E+021 ICi I3.82E+001 25

c. Irradiated Components, Control Rods, etc. [m3 I 0.OOE+

C 0.OOE+001 N/A

d. Other (describe) Jm3 0.OOE+00 Ci I0.OOE+00 N/A

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

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

Waste Percent Class A Abundance Isotope Curies (0.01% min)

H-3 3.96E-01 0.16%

C-14 2.16E+00 0.88%

Cr-51 2.62E-02 0.01%

Mn-54 9.01 E+00 3.66%

Fe-55 3.03E+01 12.30%

Co-58 2.53E-01 0.10%

Fe-59 3.35E-02 0.01%

Co-60 1.27E+02 51.56%

Ni-63 1.54E+01 6.25%

Zn-65 3.23E+01 13.11%

Sr-90 3.51E-02 0.01%

Tc-99 8.83E-02 0.04%

Ag-110m 9.64E-01 0.39%

Cs-134 2.62E+00 1.06%

Cs-137 2.46E+01 9.99%

Ce-144 5.85E-01 0.24%

Eu-152 3.49E-02 0.01%

Pu-241 5.15E-01 0.21%

TOTALS 2.46E+02 100.00%

25

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Category B - Dry Compressible Waste, Contaminated Equipment, etc.

Waste Percent Class A Abundance Isotope Curies (0.01% min)

H-3 7.23E-03 0.19%

C-14 1.03E-02 0.27%

Cr-51 9.56E-03 0.25%

Mn-54 2.70E-01 7.06%

Fe-55 5.44E-01 14.25%

Co-58 1.01 E-02 0.26%

Fe-59 8.50E-03 0.22%

Co-60 1.90E+00 49.62%

Ni-63 1.20E-01 3.15%

Zn-65 5.90E-01 15.45%

Sr-89 2.28E-04 0.01%

Sr-90 6.47E-04 0.02%

Zr-95 1.54E-03 0.04%

Nb-95 1.84E-03 0.05%

Tc-99 3.84E-03 0.10%

Ag-11 Om 1.82E-02 0.48%

Cs-134 6.94E-03 0.18%

Cs-137 3.12E-01 8.17%

Ce-144 6.02E-03 0.16%

Pu-241 2.81 E-03 0.07%

TOTALS 3.82E+00 100.00%

Category C - Irradiated Components, Control Rods, etc.

INone Category D - Other INone 26

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC

3. Solid Waste (Disposition)

Number of Shipments Mode of Transportation Destination 24 Truck Duratek/Energy Sol'n to Envirocare

• 33 Rail Alaron to Envirocare (*)

30 Truck Peach Bottom to Envirocare (*)

1 Truck Peach Bottom to Barnwell Comments:

(*) - Envirocare also known as "Energy Solutions, Inc."

9 Shipments from Peach Bottom to Alaron, Corp. for processing.

6 Shipments from Peach Bottom to Duratek/Energy Solutions, Inc. for processing.

Category A - 30 Shipments Type A LSA Category A - 1 Shipment >Type A LSA Category B - 15 Shipments Type A LSA Category C - No Shipments Made Category D - No Shipments Made B. Irradiated Fuel Shipments (Disposition)

No shipments of this type were made during the reporting period.

C. Changes to Process Control Program (PCP)

There was a revision to RW-AA-100 in 2006. The revision was considered administrative.

There were no changes to any technical data or calculations as it relates to release or exposure. The revisions were word changes for clarification purposes. Examples are the spelling of the term 'Technical Specifications', adding procedure references and rewording several sentences for clarification purposes only.

27

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 28

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 4 Radiological Impact on Man 29

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 30

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC

1. Radiological Impact on Man The Annual Radiation Dose Assessment Report for January 1, 2006 to December 31, 2006 contained dose calculations based on current year meteorology and river flows.

The total body and skin doses, 40 CFR 190 doses and doses to MEMBERS OF THE PUBLIC due to activities inside the site boundary are found in the Annual Radiation Dose Assessment Report for January 1, 2006 to December 31, 2006.

2. A summary of gaseous and liquid radiation annual doses to MEMBERS OF THE PUBLIC as calculated by the ODCM follows:

Effluent Applicable Estimated Age Location  % of Limit Unit Organ Dose Group Distance Direction Applicable (meters) (toward) Limit Noble Gas Gamma - Air Dose 1.82E-01 All 1097 SSE 9.1OE-01 20 mRad Noble Gas Beta - Air Dose 1.25E-01 All 1097 SSE 3.12E-01 40 mRad

Iodine, Particulate & Thyroid 4.78E-02 Infant 1431 WSW 1.59E-01 30 mrem Tritium Direct T Diati Total Body <LLD All 1150 SSE <LLD Radiation 22 mrem Liquid Total Body 1.33E-02 Adult Site Boundary 2.22E-01 6 mrem 2.53E-02 Adult Site Boundary 1.26E-01 20 mrem Liquid GI-LLI Doses calculated were well below all ODCM limits.

3. Liquid and gaseous effluent radiation monitors and instrumentation No effluent radiation monitors and instrumentation were unavailable for periods beyond the requirements of the ODCM.

31

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 32

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 5 Meteorological Data 33

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (Page Intentionally Left Blank) 34

Facility: Peach Bottom Units 2 &3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Meteorological Data The meteorological data can Report for January 1, 2006 be found in the Annual Radiation Dose Assessment through December 31, 2006.

35

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Extremely Unstable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 6 0 0 6 NNE 1 5 0 0 6 NE 5 0 0 0 5 ENE 6 2 0 0 8 E 9 4 0 0 13 ESE 1 9 0 0 10 SE 0 3 0 0 3 SSE 0 2 1 0 3 S 0 1 2 0 3 SSW 0 1 4 1 6 SW 0 2 0 0 2 WSW 0 2 0 2 4 W 0 5 1 0 6 WNW 0 4 14 3 21 NW 0 3 6 0 9 NNW 0 6 12 0 18 Variable 0 0 0 0 0 Total 22 55 40 6 0 0 123 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 36

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Moderately Unstable - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 4 0 0 0 0 5 NNE 0 2 0 0 0 0 2 NE 2 0 0 0 0 0 2 ENE 3 0 0 0 0 0 3 E 3 1 0 0 0 0 4 ESE 0 0 0 0 0 0 0 SE 1 1 0 0 0 0 2 SSE 0 0 2 0 0 0 2 S 0 1 3 0 0 0 4 SSW 0 1 0 1 0 0 2 SW 0 3 2 3 0 0 8 WSW 1 2 2 2 0 0 7 W 0 3 3 2 0 0 8 WNW 0 11 12 7 0 0 30 NW 0 2 20 11 0 0 33 NNW 0 10 13 6 0 0 29 variable 0 0 0 0 0 0 0 Total 11 41 57 32 0 0 141 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 37

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Slightly Unstable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 5 0 7 NNE 0 1 0 1 NE 0 0 0 0 ENE 1 0 0 1 E 2 0 0 2 ESE 0 2 0 2 SE 0 2 0 2 SSE 0 1 1 2 S 0 2 2 4 SSW 0 0 3 3 SW 0 1 1 2 WSW 0 3 1 7 W 1 2 4 7 WNW 0 1 5 10 NW 0 4 12 22 NNW 0 5 8 14 Variable 0 0 0 0 Total 6 29 37 14 0 0 86 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 38

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Neutral - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 28 10 0 0 39 NNE 16 15 3 0 0 '34 NE 5 1 0 0 0 6 ENE 6 0 0 0 0 6 E 6 1 0 0 0 7 ESE 4 8 0 0 0 12 SE 8 29 2 1 0 40 SSE 3 30 4 0 1 38 S 3 15 6 2 1 27 SSW 0 10 1 0 0 11 SW 2 3 8 0 0 13 WSW 1 16 6 1 0 24 W 2 16 28 8 0 54 WNW 3 34 45 19 0 101 NW 5 51 104 31 11 202 NNW 3 58 46 6 1 114 Variable 0 0 0 0 0 0 Total 68 315 263 68 14 0 728 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 39

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Slightly Stable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 8 1 0 0 0 13 NNE 10 9 1 0 0 0 20 NE 12 1 0 0 0 0 13 ENE 22 0 0 0 0 0 22 E 23 6 0 0 0 0 29 ESE 24 15 1 0 0 0 40 SE 33 21 7 0 0 0 61 SSE 18 29 4 1 1 0 53 S 9 27 12 0 0 0 48 SSW 5 14 4 0 0 0 23 SW 4 17 5 0 0 0 26 WSW 10 57 5 0 0 0 72 W 19 74 24 0 0 0 117 WNW 10 79 18 0 0 0 107 NW 13 50 22 0 0 0 85 NNW 5 30 3 0 0 0 38 Variable 0 0 0 0 0 0 0 Total 221 437 107 1 1 0 767 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 40

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Moderately Stable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 0 0 0 0 0 1 N 1 1 0 0 0 0 0 1 NNE 0 0 0 0 0 1 NE 1 ENE 2 0 0 0 0 0 2 E 4 0 0 0 0 0 4 ESE 13 0 0 0 0 0 13 SE 8 5 0 0 0 0 13 SSE 2 3 0 0 0 0 5 S 4 1 0 0 0 0 5 SSW 3 3 0 0 0 0 6 SW 9 4 0, 0 0 0 13 WSW 10 9 0 0 0 0 19 W 1 6 0 0 0 0 7 WNW 3 0 0 0 0 0 3 NW 4 1 0 0 0 0 5 NNW 3 1 0 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 69 33 0 0 0 0 102 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 41

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Extremely Stable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total o 0 0 0 N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 2 0 2 E 0 0 0 0 7 0 7 ESE 0 0 0 0 10 0 10 SE 0 0 0 0 1 0 1 SSE 0 0 0 0 0 0 0 S 0 0 0 0 3 0 3 SSW 0 0 0 0 1 0 1 SW 0 0 0 0 2 1 3 WSW 0 0 0 0 3 5 8 W 0 0 0 0 3 2 5 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 1 0 1 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 33 8 0 0 0 0 41 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 42

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Extremely Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 1 1 0 0 0 2 E 0 1 0 0 0 0 1 ESE 0 1 3 0 0 0 4 SE 0 0 2 0 0 0 2 SSE 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 6 0 0 0 9 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: 23 43

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Moderately Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 NNE 0 NE 0 ENE 0 E 0 ESE 0 SE 0 SSE 0 S 0 SSW 0 SW 0 WSW 0 W 0 WNW 0 NW 0 NNW 0 variable 0 Total 0 1 22 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: 23 44

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Slightly Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 2 0 0 0 2 NNE 0 0 1 0 0 0 1 NE 0 0 1 0 0 0 1 ENE 0 0 0 0 0 0 0 E 1 2 0 0 0 0 3 ESE 0 1 0 0 0 0 1 SE 0 0 2 0 0 0 2 SSE 0 0 0 2 0 0 2 S 0 0 3 0 1 0 4 SSW 0 0 1 1 0 0 2 SW 0 0 2 0 0 1 3 WSW 0 1 3 0 0 2 6 W 0 0 5 2 2 1 10 WNW 0 0 1 12 4 6 23 NW 0 0 3 8 0 3 14 NNW 0 1 3 4 0 0 8 Variable 0 0 0 0 0 0 0 Total 1 5 27 29 7 13 82 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 23 45

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Neutral - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 10 28 13 5 0 57 NNE 2 6 20 4 1 34 NE 5 4 3 2 0 16 ENE 5 9 0 0 0 15 E 14 3 1 0 0 21 ESE 8 9 4 1 0 23 SE 11 35 14 1 2 63 SSE 14 23 12 0 0 49 S 5 20 11 9 3 49 SSW 1 6 10 0 1 19 SW 1 6 12 5 4 28 WSW 4 11 15 24 8 62 W 4 17 29 17 21 89 WNW 8 17 73 47 38 183 NW 5 36 89 79 62 271 NNW 17 48 56 26 1 148 Variable 0 0 0 0 0 0 Total 12 114 278 362 220 141 1127 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 5 Hours of missing stability measurements in all stability classes: 23 46

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Slightly Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 12 3 0 16 NNE 3 5 2 0 12 NE 8 2 0 0 10 ENE 4 7 0 0 11 E 2 5 6 5 19 ESE 6 16 10 4 36 SE 7 17 8 4 39 SSE 15 27 12 2 60 S 9 39 28 16 94 SSW 8 5 12 3 29 SW 4 13 13 3 34 WSW 6 13 39 1 61 W 7 24 41 10 83 WNW 6 16 40 13 76 NW 8 22 32 6 68 NNW 5 21 18 0 45 Variable 0 0 0 0 0 Total 12 99 244 264 67 7 693 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: 23 47

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Moderately Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 NNE 0 0 0 NE 0 1 1 ENE 1 1 2 E 2 3 5 ESE 1 2 3 SE 0 2 2 SSE 5 12 19 S 2 19 23 SSW 7 13 23 SW 11 8 26 WSW 5 4 13 W 4 3 9 WNW 0 3 3 NW 1 2 4 NNW 1 3 5 Variable 0 0 0 Total 4 40 76 17 1 0 138 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 23 48

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2006 Stability Class - Extremely Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

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

ENE 1

E ESE 0 SE 2 SSE 1 S 12 SSW 9 SW 8 WSW 10 W 9 WNW 2 NW 1 NNW 0 variable 0 Total 2 20 26 8 0 0 56 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 23 Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Extremely Unstable - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet 49

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 2 0 0 0 N 2 25 29 1 0 0 0 NNE 13 29 43 0 0 0 0 NE 12 5 17 0 0 0 0 ENE 12 3 15 0 0 0 0 E 17 5 22 1 0 0 0 ESE 2 4 7 0 0 0 0 SE 2 10 12 1 0 0 0 SSE 0 10 11 6 0 0 0 S 0 7 13 1 0 0 0 SSW 0 0 1 1 0 0 0 SW 0 0 1 0 0 0 0 WSW 0 2 2 1 0 0 0 W 0 4 5 WNW 0 7 6 2 0 0 15 NW 0 9 11 1 0 0 21 NNW 0 37 15 0 0 0 52 Variable 0 0 0 0 0 0 0 Total 60 157 46 3 0 0 266 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 50

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Moderately Unstable - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 10 0 0 14 NNE 4 5 0 0 9 NE 3 0 0 0 3 NE 1 0 0 0 1 E 5 2 0 0 7 ESE 2 2 0 0 4 SE 2 2 0 0 4 SSE 2 7 1 0 10 S 0 9 1 0 10 SSW 0 4 0 0 4 SW 0 2 0 0 2 WSW 0 5 5 0 10 W 0 4 2 0 6 WNW 0 6 7 1 14 NW 2 11 14 1 28 NNW 1 18 11 0 30 Variable 0 0 0 0 0 Total 26 87 41 2 0 0 156 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 51

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record:.April - June 2006 Stability Class - Slightly Unstable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 3 NNE 5 6 NE 1 3 ENE 0 4 E 0 0 ESE 1 2 SE 1 5 SSE 3 3 S 2 4 SSW 4 4 SW 0 2 WSW 1 3 W 2 4 WNW 5 NW 3 8 NNW 10 12 Variable 0 0 Total 11 40 19 4 0 0 74 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 52

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Neutral - 15( )Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 21 12 0 36 NNE 17 15 0 0 32 NE 14 0 0 0 14 ENE 19 0 0 0 19 E 9 3 0 0 12 ESE 8 6 0 0 14 SE 4 7 3 0 14 SSE 7 24 a 0 39 S 9 25 5 0 39 SSW 7 7 0 0 14 SW 3 6 1 0 10 WSW 5 7 5 0 17 W 6 12 5 2 25 WNW 9 25 13 2 49 NW 8 19 23 2 52 NNW 10 36 12 1 59 variable 0 0 0 0 0 Total 138 213 87 7 0 445 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 53

Facility: Peach Bottum Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Slightly Stable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 16 25 9 0 0 0 52 NNE 16 13 0 0 0 0 29 NE 14 0 0 0 0 0 14 ENE 15 0 0 0 0 0 15 E 31 1 0 0 0 0 32 ESE 25 6 0 0 0 0 31 SE 32 14 0 0 0 0 46 SSE 33 42 15 0 0 0 90 S

34 32 6 0 0 0 72 SSW 25 10 1 0 0 0 36 SW 25 16 2 0 0 0 43 WSW 10 26 1 0 0 0 37 W

17 35 0 0 0 0 52 WNW 19 54 7 1 0 0 81 NW 26 62 7 0 0 0 95 NNW 24 67 5 0 0 0 96 Variable 0 0 0 0 0 0 0 Total 364 403 53 1 0 0 821 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 54

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Moderately Stable - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 5 1 6 NkE 1 1 2 NE 1 0 1 ENE 3 0 3 E 4 0 4 ESE 8 0 8 SE 5 0 5 SSE 5 0 5 S 6 2 8 SSW 11 0 11 SW 7 7 14 WSW 24 19 43 W 24 25 49 WNW 15 11 26 NW 18 10 28 NNW 7 2 9 Variable 0 0 0 Total 144 78 0 0 0 0 222 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 55

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Extremely Stable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 NNE 2 0 0 0 2 NE 1 0 0 0 1 ENE 1 0 0 0 1 E 0 0 0 0 0 ESE 1 0 0 0 1 SE 1 0 0 0 1 SSE 0 0 0 0 0 S 0 0 0 0 0 SSW 2 0 0 0 2 SW 6 4 0 0 10 WSW 14 16 0 0 30 W 14 3 0 0 17 WNW 7 0 0 0 7 NW 5 0 0 0 5 NNW 0 0 0 0 0 variable 0 0 0 0 0 Total 54 23 0 0 0 0 77 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 56

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Extremely Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 NNE 1 1 1 4 8 NE 0 2 8 2 13 ENE 0 10 11 4 25 E 0 4 0 2 7 ESE 0 0 2 0 3 SE 0 0 3 2 5 SSE 0 0 0 0 0 S 0 0 0 0 0 SSW 0 0 0 0 0 0

SW 0 0 0 0 0 WSW 0 0 0 1 1 W 0 0 0 0 0 WNW 0 0 0 0 0 NW 0 0 0 0 0 NNW 0 0 0 0 0 Variable 0 0 0 0 0 Total 1 17 25 15 4 0 62 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 57

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Moderately Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 5 0 0 0 7 NNE 0 1 2 1 0 0 4 NE 0 0 0 0 0 0 0 E~NE 0 1 0 0 0 0 1 E 0 1 0 0 0 0 1 ESE 0 4 3 0 1 0 8 SE 0 2 2 0 0 0 4 SSE 0 1 2 0 0 0 3 S 0 0 0 2 0 0 2 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 W 0 0 0 0 0 2 2 WNW 0 0 0 3 0 1 4 NW 0 0 1 2 0 0 3 NNW 0 0 6 4 1 0 11 Variable 0 0 0 0 0 0 0 Total 0 12 21 12 2 3 50 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 58

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Slightly Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 5 6 1 0 0 12 NNE 0 0 1 2 0 0 3 NE 0 4 0 0 0 0 4 ENE 2 2 2 0 0 0 6 E 2 2 1 1 0 0 6 ESE 0 1 1 0 1 0 3 SE 0 0 3 0 0 0 3 SSE 0 0 1 1 0 0 2 S 0 0 7 4 0 0 11 SSW 0 0 2 0 0 0 2 SW 0 0 0 1 0 0 1 WSW 0 0 1 1 0 0 2 W 0 0 0 4 0 0 4 WNW 0 0 0 8 1 20 NW 0 0 9 6 2 0 17 NNW 0 2 19 7 0 0 28 Variable 0 0 0 0 0 0 0 Total 4 16 53 39 11 1 124 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 3 59

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Neutral - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 23 19 26 7 0 76 NNE 0 10 9 1 0 0 20 NE 4 11 7 7 0 0 29 ENE 6 6 11 3 0 0 26 E 5 8 21 11 12 0 57 ESE 0 15 17 13 13 5 63 SE 2 5 12 10 3 0 32 SSE 1 a 23 19 7 1 59 S 0 11 25 21 7 0 64 SSW 1 10 16 2 0 0 29 SW 0 10 11 3 1 0 25 WSW 0 10 16 10 7 1 44 W 0 6 24 13 9 3 55 WNW 0 6 20 39 21 11 97 NW 0 12 32 26 20 5 95 NNW 1 18 48 41 5 2 115 variable 0 0 0 0 0 0 0 Total 21 169 311 245 112 28 886 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: 3 60

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Slightly Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 7 23 15 2 0 47 NNE 2 11 18 2 0 0 33 NE 0 7 8 0 0 26 ENE 0 10 9 3 0 0 22 E 1 12 7 4 0 0 24 ESE 2 10 22 3 1 3 41 SE 2 14 15 7 1 0 39 SSE 2 22 27 14 3 0 68 S 2 20 39 17 2 0 80 SSW 1 15 27 9 0 1 53 SW 1 15 32 10 2 0 60 WSW 1 7 17 15 3 0 43 W 1 5 15 16 0 0 37 WNW 0 8 12 32 10 0 62 NW 1 10 22 40 14 0 87 NNW 1 6 29 45 4 0 85 Variable 0 0 0 0 0 0 0 Total 17 183 321 240 42 4 807 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 7 Hours of missing stability measurements in all stability classes: 3 61

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Moderately Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 5 2 0 0 9 NNE 0 1 7 2 0 0 10 NE 0 3 0 0 0 0 3 ENE 0 2 1 0 0 0 3 E 0 1 0 0 0 0 1 ESE 0 0 3 0 0 0 3 SE 0 2 2 0 0 0 4 SSE 1 2 2 2 0 0 7 S 0 5 6 1 0 0 12 SSW 3 4 7 1 0 0 15 SW 1 9 17 5 0 0 32 WSW 0 8 5 6 1 0 20 W 0 1 10 6 1 0 18 WNW 0 3 9 14 1 0 27 NW 0 3 9 5 0 0 17 NNW 0 1 5 7 0 0 13 Variable 0 0 0 0 0 0 0 Total 5 47 88 51 3 0 194 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: 3 62

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2006 Stability Class - Extremely Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 2 8 NNE 0 2 2 NE 0 0 0 ENE 0 1 1 E 0 2 2 ESE 0 0 0 SE 0 0 0 SSE 0 0 1 S 0 0 0 SSW 0 1 1 SW 0 0 1 WSW 0 0 5 W 0 1 2 WNW 0 1 3 NW 0 3 8 NNW 0 4 11 Variable 0 0 0 Total 0 17 26 2 0 0 45 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:

63

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Extremely Unstable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 3 10 13 NNE 4 8 12 NE 7 0 7 ENE 12 0 12 E 9 0 9 ESE 8 0 8 SE 8 4 13 SSE 1 16 21 S 2 11 14 SSW 0 1 1 SW 1 2 3 WSW 0 2 2 W 1 4 5 WNW 0 1 1 NW 0 1 1 2 10 12 NNW Variable 0 0 0 Total 58 70 6 0 0 0 134 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 64

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Moderately Unstable - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 4 12 0 0 16 NNE 6 4 0 0 10 NE 8 0 0 0 8 ENE 7 0 0 0 7 E 1 0 0 0 1 ESE 3 0 0 0 3 SE 0 1 0 0 1 SSE 1 6 2 0 9 S 2 16 2 0 20 SSW 1 8 0 0 9 SW 1 4 1 0 6 WSW 0 0 0 0 0 W 3 6 0 0 9 WNW 2 2 2 0 6 NW 0 3 0 0 3 NNW 2 15 0 0 17 Variable 0 0 0 0 0 Total 41 77 7 0 0 0 125 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 65

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Slightly Unstable - l5OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 13 NNE 7 NE 2 ENE 3 E 1 ESE 0 SE 3 SSE 6 S 8 SSW 9 SW 2 WSW 3 W 6 WNW 3 NW 5 NNW 7 variable 0 Total 24 48 6 0 0 0 78 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 66

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July -

September 2006 Stability Class - Neutral - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 17 35 1 0 53 NNE 16 3 0 0 19 NE 9 0 0 0 9 ENE 6 0 0 0 6 E 10 1 0 0 11 ESE 4 0 0 0 4 SE 10 6 0 0 16 SSE 13 26 2 0 41 S 13 34 2 0 49 SSW 10 10 1 0 21 SW 4 16 0 0 20 WSW 7 17 3 0 27 W 8 15 0 0 23 WNW 6 22 1 0 29 NW 10 13 1 0 24 NNW 13 48 0 0 61 Variable 0 0 0 0 0 Total 156 246 11 0 0 413 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 67

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Slightly Stable - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 1 0 0 0 N 47 49 97 5 0 0 0 NNE 10 5 20 0 0 0 0 NE 4 0 4 0 0 0 0 ENE 4 0 4 0 0 0 0 E 7 0 7 0 0 0 0 ESE 7 0 7 0 0 0 0 SE 23 19 42 1 0 0 0 SSE 64 62 127 1 0 0 0 S 58 48 107 0 0 0 0 SSW 31 13 44 1 0 0 0 SW 29 28 58 1 0 0 0 WSW 31 32 64 0 0 0 0 W 27 32 59 0 0 0 0 WNW 31 21 52 0 0 0 0 NW 21 32 53 0 0 0 0 NNW 41 26 67 Variable 0 0 0 0 0 0 0 Total 435 367 10 0 0 0 812 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 68

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July -

September 2006 Stability Class - Moderately Stable - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2 1 0 0 3 NNE 1 0 0 0 1 NE 1 0 0 0 1 ENE 0 0 0 0 0 E 0 0 0 0 0 ESE 1 0 0 0 1 SE 4 0 0 0 4 SSE is 4 0 0 15 S 9 2 0 0 11 SSW 10 3 0 0 13 SW 18 4 0 0 22 WSW 39 34 0 0 73 W 36 13 0 0 49 WNW 29 10 0 0 39 NW 17 7 1 0 25 NNW 13 6 0 0 19 Variable 0 0 0 0 0 Total 191 84 1 0 0 276 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 69

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Extremely Stable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

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

0 0 0 0 0 ESE 0 0 0 0 0 SE 0 0 0 0 0 SSE 0 0 0 0 0 S 0 0 0 0 0 SSW 1 1 0 0 2 SW 22 6 0 0 28 WSW 59 14 0 0 73 W 18 2 0 0 20 WNW 8 0 0 0 8 NW 1 0 0 0 1 NNW 0 0 0 0 0 Variable 0 0 0 0 0 Total 109 23 0 0 0 132 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 70

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Extremely Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 1 0 0 0 0 1 ENE 0 3 1 0 0 0 4 E 0 2 1 0 0 0 3 ESE 0 4 1 0 0 0 5 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 1 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 W 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0, 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 10 4 0 0 0 14 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: 13 71

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Moderately Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

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

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Var iabl e Total 0 16 14 2 0 0 32 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: 13 72

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Slightly Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total x 0 2 0 0 NNE 0 6 2 0 WE 2 2 1 0 ENE 2 3 2 0 E 0 6 1 0 ESE 0 5 2 0 SE 0 1 3 1 SSE 0 2 3 3 S 0 0 3 4 SSW 0 1 0 0 SW 0 1 1 0 WSW 0 2 0 0 W 0 0 1 0 WNW 0 0 0 0 NW 0 0 2 0 NNW 0 2 5 0 Variable 0 0 0 0 Total 4 33 26 8 1 0 72 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: 13 73

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Neutral - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 24 20 9 53 NNE 5 14 14 6 39 NE 9 16 18 10 56 ENE 6 14 12 3 36 E 9 16 8 12 45 ESE 1 8 6 6 21 SE 3 8 9 3 23 SSE 2 12 37 13 67 S 0 16 38 30 85 SSW 1 19 27 11 59 SW 1 13 18 7 39 WSW 1 10 19 11 44 W 1 12 19 5 37 WNW 3 8 25 15 51 NW 0 16 31 19 67 NNW 4 39 47 13 103 Variable 0 0 0 0 0 Total 46 245 348 173 8 5 825 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 5 Hours of missing stability measurements in all stability classes: 13 74

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Slightly Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 13 30 17 0 0 60 NNE 1 13 22 4 0 0 40 NE 4 12 9 6 3 11 45 ENE 2 10 8 1 1 3 25 E 6 20 7 2 0 0 35 ESE 2 13 6 1 0 0 22 SE 0 17 24 11 0 0 52 SSE 1 21 42 23 1 0 88 S 1 16 49 52 3 0 121 SSW 1 6 45 12 0 0 64 SW 4 12 28 11 0 0 55 WSW 1 11 28 24 2 0 66 W 3 12 20 16 2- 0 53 WNW 2 8 16 18 3 0 47 NW 3 6 21 22 2 0 54 NNW 2 18 24 17 0 0 61 Variable 0 0 0 0 0 0 0 Total 33 208 379 237 17 14 888 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 13 Hours of missing stability measurements in all stability classes: 13 75

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Moderately Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7 15 1 24 NNE 2 2 0 5 NE 1 1 0 3 ENE 1 0 0 1 E 1 0 0 1 ESE 3 2 0 6 SE 7 1 0 10 SSE 3 1 0 6 S 5 4 2 14 SSW 10 4 0 14 SW 8 3 4 19 WSW 9 13 15 41 W 8 14 22 45 WNW 8 3 14 30 NW 5 12 8 31 NNW 4 15 7 28 variable 0 0 0 0 Total 29 82 90 73 4 0 278 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: 13 76

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2006 Stability Class - Extremely Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 >,24 Total N 2 6 2 0 0 0 10 NNE 1 2 1 0 0 0 4 NE 0 0 0 0 0 0 0 ENE 1 0 0 0 0 0 1 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 SSW 1 1 0 0 0 0 2 SW 1 2 1 0 0 0 4 WSW 0 2 1 0 0 0 3 W 1 3 5 1 0 0 10 WNW 3 1 1 1 1 0 7 NW 4 2 5 1 0 0 12 NNW 1 5 6 0 0 0 12 Variable 0 0 0 0 0 0 0 Total 15 24 22 3 1 0 65 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 13

)

77

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Extremely Unstable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 8 1 0 NNE 0 2 0 0 NE 0 0 0 0 ENE 3 0 0 0 E 9 0 0 0 ESE 2 2 0 0 SE 0 0 0 0 SSE 0 2 1 0 S 0 1 0 0 SSW 0 2 1 0 SW 0 2 5 0 WSW 0 4 1 0 W 0 1. 0 0 WNW 0 0 0 0 NW 0 3 1 0 NNW 0 0 1 0 variable 0 0 0 0 Total 14 27 11 0 0 0 52 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 78

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Moderately Unstable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 0 0 1 NNE 0 0 0 0 NE 0 0 0 1 ENE 0 0 0 7 E 1 0 0 8 ESE 3 0 0 5 SE 2 0 0 2 SSE 2 2 0 4 S 4 2 0 6 SSW 1 1 0 2 SW 2 5 0 7 WSW 9 5 0 15 W 3 5 2 10 WNW 2 2 0 4 NW 8 7 0 15 NNW 9 7 0 16 Variable 0 0 0 0 Total 18 47 36 2 0 0 103 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 79

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station.

Period of Record: October

- December2006 Stability Class - Slightly Unstable - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

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

1 2 4 1 8 WNW 0 4 6 0 10 NW 0 6 14 0 20 NNW 0 5 3 0 8 Variable 0 0 0 0 0 Total 9 29 32 0 0 71 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 80

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October

- December2006 Stability Class - Neutral - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 4 21 0 0 0 N 1 26 2 1 0 0 0 NNE 5 8 o 0 0 0 0 NE 6 6 0 0 0 0 0 ENE 9 9 0 0 0 0 0 E 11 11 2 0 0 0 0 ESE 4 6 13 5 1 0 0 SE 5 24 23 5 4 0 0 SSE 4 36 S 0 12 4 1 0 0 17 SSW 2 5 0 0 0 0 7 SW 1 6 2 0 0 0 9 WSW 4 7 4 1 0 0 16 W 1 15 30 4 0 0 50 WNW 1 40 63 2 0 0 106 NW 4 48 60 8 0 0 120 NNW 3 24 20 3 0 0 50 variable 0 0 0 0 0 0 0 Total 61 201 215 24 0 0 501 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 81

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Slightly Stable - 150Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 9 8 8 0 25 NNE 19 8 0 0 27 NE 21 0 0 0 21 ENE 29 0 0 0 29 E 62 12 0 0 74 ESE 42 20 0 0 62 SE 44 31 5 3 83 SSE 34 39 13 1 87 S 30 20 14 0 64 SSW 14 7 0 0 21 SW 4 20 1 0 25 WSW 10 36 6 5 57 W 11 84 7 2 104 WNW 9 73 3 0 85 NW 11 35 19 0 65 NNW 4 7 9 0 20 Variable 0 0 0 0 0 Total 353 400 85 11 0 0 849 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 82

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October

- December2006 Stability Class - Moderately Stable - 15OFt-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 NNE 2 0 2 NE 1 0 1 ENE 2 0 2 E 14 2 16 ESE 11 3 14 SE 8 0 8 SSE 4 1 5 S 4 2 6 SSW 8 4 12 SW 23 11 34 WSW 16 28 44 W 11 17 28 WNW 7 0 7 NW 8 1 9 NNW 2 0 2 Variable 0 0 0 Total 121 69 0 0 0 0 190 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 83

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Extremely Stable - l50Ft-33Ft Delta-T (F)

Winds Measured at 33 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 0 0 NNE 0 0 0 0 0 NE 1 0 0 0 1 0 0 4 ENE 4 0 0 0 0 19 E 19 ESE 6 0 0 0 6 SE 0 0 0 0 0 SSE 1 0 0 0 1 S 0 0 0 0 0 SSW 5 0 0 0 5 SW 22 14 0 0 36 WSW 29 10 0 0 39 W 12 5 0 0 17 WNW 11 0 0 0 11 NW 3 0 0 0 3 NNW 2 0 0 0 2 Variable 0 0 0 0 0 Total 115 29 0 0 0 144 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 84

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Extremely Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

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

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 2 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 85

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Moderately Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 0 NNE 0 0 2 NE 0 0 0 ENE 0 0 0 E 0 0 0 ESE 0 2 0 SE 0 0 0 SSE 0 0 0 S 0 0 0 SSW 0 0 0 SW 0 0 0 WSW 0 0 0 W 0 0 0 WNW 0 0 0 NW 0 0 0-NNW 0 0 0 Variable 0 0 0 Total 0 2 2 0 6 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 86

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Slightly Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 0 1 0 NNE 0 0 2 1 NE 0 0 2 0 ENE 0 0 0 0 E 0 0 0 0 ESE 0 0 2 0 SE 0 1 2 0 SSE 0 0 1 0 S 0 0 1 0 SSW 0 0 0 0 SW 0 0 2 1 WSW 0 0 3 2 W 0 0 1 5 WNW 0 0 0 0 NW 0 0 1 0 NNW 0 0 0 3 Variable 0 0 0 0 Total 0 1 18 12 7 2 40 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: 4 87

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Neutral - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 1 5 5 15 6 0 32 NNE 4 4 2 23 19 0 52 NE 3 2 9 11 4 0 29 ENE 5 7 3 0 1 0 16 E 4 4 6 0 0 0 14 ESE 2 12 17 10 0 0 41 SE 2 9 15 9 7 2 44 SSE 0 5 15 2 2 0 24 S 1 9 22 15 18 6 71 SSW 1 6 9 3 1 0 20 SW 0 0 6 9 1 0 16 WSW 0 6 8 10 2 5 31 W 0 4 9 15 20 18 66 WNW 0 7 19 45 47 6 124 NW 1 3 30 46 43 13 136 NNW 1 9 41 54 21 5 131 variable 0 0 0 0 0 0 0 Total 25 92 216 267 192 55 847 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 88

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Slightly Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19.24 > 24 Total N 1 3 8 ii 9 0 32 NNE 3 3 9 4 6 0 25 NE 1 4 8 5 2 0 20 ENE 2 4 14 2 1 0 23 E 2 9 13 1 0 0 25 ESE 0 7 43 22 2 0 74 SE 2 22 28 21 3 2 78 SSE 6 27 22 8 2 1 66 S 4 24 50 27 9 1 115 SSW 3 21 27 15 0 1 67 SW 2 7 15 12 1 0 37 WSW 2 11 7 17 2 1 40 W 1 8 16 45 7 2 79 WNW 0 6 7 40 16 0 69 NW 1 5 26 54 12 0 98 NNW 1 3 14 18 10 1 47 Variable 0 0 0 0 0 0 0 Total 31 164 307 302 82 9 895 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: 4 89

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October

- December2006 Stability Class - Moderately Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 1 0 0 0 N 1 4 6 2 0 0 0 NNE 1 2 5 NE 2 1 6 1 0 0 10 ENE 0 3 2 0 0 0 5 E 1 2 1 0 0 0 4 ESE 0 3 0 1 0 0 4 SE 0 3 4 3 0 0 10 SSE 1 9 7 1 0 0 18 S 4 16 12 0 1 0 33 SSW 0 16 13 2 1 0 32 SW 1 16 7 6 0 0 30 WSW 6 13 10 6 0 0 35 W 6 7 8 14 0 0 35 WNW 3 #3 4 11 0 0 21 NW 1 9 11 9 0 0 30 NNW 2 0 4 0 0 0 6 Variable 0 0 0 0 0 0 0 Total 29 107 92 54 2 0 284 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: 4 90

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December2006 Stability Class - Extremely Stable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total 2 0 0 0 0 N 2 3 0 0 0 0 NNE 5 NE 2 2 0 0 0 5 ENE 1 1 0 0 0 5 E 2 0 0 0 0 3 ESE 0 0 0 0 0 0 SE 0 0 0 0 0 2 SSE 0 0 0 0 0 0 S 3 1 0 0 0 5 SSW 6 4 0 0 0 11 SW 4 2 1 0 0 7 WSW 10 14 9 1 0 34 W 3 8 6 1 0 18 WNW 6 2 0 0 0 9 NW 3 3 1 0 0 7 NNW 4 2 0 0 0 6 Variable 0 0 0 0 0 0 Total 12 49 39 17 2 0 119 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: 4 91