ML11122A099

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Independent Spent Fuel Storage Installation - Annual Radioactive Effluent Release Report 53, January 1, 2010 Through December 31, 2010
ML11122A099
Person / Time
Site: Peach Bottom  Constellation icon.png
Issue date: 04/29/2011
From: Stathes G
Exelon Nuclear
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
Download: ML11122A099 (91)
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Text

Peach Bottom Atomic Power Station www.exeloncorp.com Exelon.

1848 Lay Road Nuclear Delta, PA 17314 April 29, 2011 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001

Subject:

Peach Bottom Atomic Power Station Units 2 and 3 Independent Spent Fuel Storage Installation (ISFSI)

Facility Operating License DPR-44 and DPR-56 NRC Docket 50-277 and 50-278 and ISFSI Docket 72-29 Annual Radioactive Effluent Release Report 53 January 1, 2010 through December 31, 2010 Enclosed is the Annual Radioactive Effluent Release Report 53, January 1, 2010, through December 31, 2010, for Peach Bottom Atomic Power Station Units 2 and 3.

This report is being submitted in compliance with 10CFR50.36a (2) and the Technical Specifications of Operating Licenses DPR-44 and DPR-56, and to fulfill the requirements of ODCM 3.10.2. Additionally, this report is submitted to satisfy annual effluent reporting requirements for the ISFSI required by the Offsite Dose Calculation Manual (ODCM).

There was no revision made to the ODCM for the 2010 reporting period.

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, Garey L. Stathes, Plant Manager Peach Bottom Atomic Power Station GLS/RJR/AMC/bcb Enclosure (2) ccn 11-37 cc: William Dean, Administrator, Region I, USNRC G. F. Wunder, Project Manager, USNRC LID F. Bower, USNRC Senior Resident Inspector, PBAPS A4

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. 53 JANUARY 1, 2010 THROUGH DECEMBER 31, 2010 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 4 Maximum Permissible Concentrations 5 Average Energy 5 Measurements and Approximations of Total Radioactivity 5 Batch Releases 7 Average Stream Flow 8 Abnormal Releases 8 Changes to ODCM 10 Minimum Detectable Concentrations 11 Violations 11 Effluent Summary 12 Gaseous Effluents - Summation of All Releases 13 Gaseous Effluents for Elevated Release Point - Main Stack 14 Gaseous Effluents for Ground Level Release Points - 15 Unit 2 and Unit 3 Roof Vents & Aux Boiler Stack Liquid Effluents - Summation of All Releases 16 Liquid Effluents Release Points- Liquid Radwaste, RHR Leaks 17 Tritium Leaks & Auxiliary Boiler Leak Solid Waste and Irradiated Fuel Shipments 18 Solid Waste Shipped 19 Irradiated Fuel Shipments 20 Changes to Process Control Program (PCP) 20 Radiological Impact on Man 21 Radiological Impact on Man 22 40 CFR 190 Doses 22 Liquid and Gaseous Effluent Radiation Monitors and 22 Instrumentation Meteorological Data 23 Appendix A ERRATA Data Section 80 Appendix B Revised copy of the ODCM 85 Technical Concurrences: (for accuracy of information)

I 1"-"-

Chemistry / Wdwaste Manager Date

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, 2010 through December 31, 2010. 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 four unplanned releases of liquid radioactive material. Two releases were from RHR heat exchangers, one was from a groundwater tritium plume and one from a leak of radioactive water through the auxiliary boilers.

There was one unplanned gaseous release during work on recoating the Torus Dewatering Tank.

The maximum calculated organ dose (Bone) from iodines, tritium, carbon-14 (C-

14) and particulates to any individual due to gaseous effluents was 5.49E-01 mrem, which was approximately 1.83E+00 percent of the annual limit. Carbon-14 was included as a principal nuclide for the first time in this report. The large increase in organ dose from gaseous effluents compared to previous years was due to C-14. The maximum calculated gamma air dose in the UNRESTRICTED Area due to noble gas effluents was 1.78E-01 mrad, which was 8.90E-01 percent of the annual limit.

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

There were no changes made to RW-AA-100 "Process Control Program for Radioactive Waste" in 2010.

There was one change needed for the 2009 Effluent Report. In the 2009 report, Revision 13 of the ODCM was included without the change matrix. Therefore, Appendix A contains the change descriptions for Revision 13 of the ODCM.

There were no changes made to the ODCM during the 2010 reporting period.

Therefore, Appendix B is left intentionally blank.

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

1

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

  • CY-AA-170-000, Radioactive Effluent and Environmental Monitoring Program
  • CY-AA-1 70-200, Radioactive Effluent Controls Program

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

1. Regulatory Limits A. Noble Gases:
1. < 500 mrem/Yr - total body ODCMS 3.8.C.1.a

< 3000 mrem/Yr - skin

2. <10 m rad - air gamma quarterly air dose limits

<20 m rad - air beta ODCMS 3.8.C.2.a and b

3. <20 m rad - air gamma yearly air dose limits

<40 mrad - air beta ODCMS 3.8.C.2.c and d B. lodines, Tritium, Particulates with Half Life > 8 days:

1. < 1500 mrem/Yr - any organ ODCMS 3.8.C.1.b
2. <15 mrem - any organ quarterly dose limits ODCMS 3.8.C.3.a
3. <30 mrem - any organ yearly dose limits ODCMS 3.8.C.3.b C. Liquid Effluents
1. Concentration < 10 times 10 CFR 20, ODCMS 3.8.B.1 .a Appendix B, Table 2, Col. 2
2. <3.0 mrem - total body quarterly dose limits

<10 mrem - any organ ODCMS 3.8.B.2.a

3. <6.0 mrem - total body yearly dose limits

<20 mrem - any organ ODCMS 3.8.B.2.b D. 40 CFR 190 and 10 CFR 72.104 (Annual Dose Equivalent)

<25 mrem - total body ODCMS 3.8.D.1 .a

<75 mrem - thyroid ODCMS 3.8.D.1 .b

< 25 mrem - any other organ ODCMS 3.8.D.1 .c

< 3.0 mrem - from liquid and ODCMS 3.8.D.1 .d gaseous effluent

< 55 mrem - thyroid from gases ODCMS 3.8.D.1 .e 4

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.1 a. 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 pCi/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 weekly to determine the isotopic mixture of noble gas activity released for the week.

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.

5

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

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

Iodine activity was continuously sampled and analyzed in accordance with 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 analyses of Sr-89, Sr-90 and gross alpha.

D. Carbon-14 (C-14)

The amount of C-14 (Ci) released was estimated using the guidance from EPRI Technical Report 1021106, Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents. The C-14 was released primarily through the stack (97%)

with a small amount (3%) through the plant vents. The effluent in liquid effluents was determined to not be significant. The resulting annual dose to a child from gaseous releases was 5.49E-01 mrem to the bone.

E. 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 analyses of Fe-55, P-32, Sr-89, Sr-90 and gross alpha.

About 900 gal of water from Peach Bottom Unit 1 that were contaminated with tritium ( 0.01 Ci) were transported to Units 2 & 3 radwaste system and discharged through the laundry drain system as normal discharges. The dose contributions and isotope quantities from the releases were added to this Radioactive Effluent Release Report for the applicable reporting periods.

F. 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.

6

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: 40 10 22 13 Total Time for batch releases (minutes) 9.51 E+03 1.84E+03 5.08E+03 1.53E+03 Maximum time period for batch release 985 262 310 278 (minutes):

Average time period for batch release 238 184 231 118 (minutes):

Minimum time period for batch release 40 45 35 40 (minutes):

Average Stream Flow

  • Dilution volume (liters): 3.58E+10 9.39E+09 2.24E+10 4.90E+09
  • Stream flow not used for dose calculations 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):

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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: Four abnormal release sources A. Liquid:
1. Event description - 2C Residual Heat Removal (RHR) to High Pressure Service Water (HPSW) leak On 06/16/2010, routine sampling of the HPSW effluent to the discharge canal detected low-level radioactive contamination. Subsequent investigation determined that primary coolant water was leaking through the Unit 2C RHR heat exchanger into the 2A loop of the HPSW system. The leak rate range was 0.0111 GPM to 0.900 GPM to the end of September 2010. The 2C RHR heat exchanger was repaired September 21, 2010.

Analysis of Releases It was estimated that the contaminated water released to the discharge canal for all of 2010 was responsible for 1.463E-03 mrem total body dose (Adult), and 2.20 E-03 mrem Critical Organ (Teen Liver) 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 analyses 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 - 3A Residual Heat Removal (RHR) to High Pressure Service Water (HPSW) leak On 04/08/2008, routine sampling of the HPSW effluent to the discharge canal detected low-level radioactive contamination. Subsequent investigation determined that primary coolant water was leaking through the Unit 3A RHR heat exchanger into the 3A loop of the HPSW system. The 3A RHR 8

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC continued to be a source of contamination to the end of 2010. The leak rate ranged from was 0.0003 GPM to 0.0075 GPM throughout the year. The repair of this leak is in the Peach Bottom Corrective Action Program (CAP).

Refer to Issue Report (IR) 694879 and Action Request (AR) A163809.

Analysis of Releases It was estimated that the contaminated water released to the discharge canal for all of 2010 was responsible for 1.14E-04 mrem total body dose (Adult), and 2.02E-04 mrem Critical Organ (Teen Liver) 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 analyses of Fe-55, P-32, Sr-89, Sr-90 and gross alpha. 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 - Ground Water Plume During 2010, during the sampling and analysis 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 be discharge into the intake or 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 concentration ranging from 1.10E-05 uCi/ml to 3.OOE-04 uCi/mI, the ground water released to the discharge canal was responsible for 9.80E-04 mrem total body dose (Child), and 9.80E-04 mrem Critical Organ dose (Child). This dose contribution was well below the limits specified in the ODCM.

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

4. Event Description - Auxiliary Boiler Water from the Auxiliary Boiler steam that was contaminated with tritium entered the sample sink drain. Samples ranged from 2.10E-05 uCi/mI to 2.82E-05 uCi/mI. There was also Co-60 at a concentration of 8.00E-09 uCi/mI found in one sample. The discharge canal is a monitored discharge point.

Analysis of Releases The estimated flow to the discharge canal is at a rate of 3 GPM. For this release, 1.87 E-07 mrem total body dose (Child), and 2.47E-07 mrem Critical Organ dose (Adult - GI-LLI). This dose contribution was well below the limits specified in the ODCM.

B. Gaseous:

1. Event Description - Torus Dewatering Tank Internal Inspection During inspection and repair of the Torus Dewatering Tank, a tent was built for workers to enter and exit the work area. The initial discovery of Co-60 occurred on 04/12/10 through 08/01/10. Air samples detected Co-60 ranging from 1.65 E-1 1 uCi/cc to 1.58E-08 uCi/cc. One sample also detected Cs-1 37 at 5.62E-1 0 uCi/cc.

Analysis of Releases The estimated flow through the ventilation was 240 CFM. For this time period there was 0.00 mrem/year Thyroid dose rate and 7.47E-03 mrem/year dose rate for Lung. This dose contribution was well below the limits specified in the ODCM.

8. Changes to the ODCM:

No changes to the ODCM were made in 2010.

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

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 cases, the LLD requirements were satisfied.

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.

10. Violations:

A. There were no violations for the 2010 reporting period.

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Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 2 Effluent Summary 12

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Gaseous Effluents - Summary Of All Releases Period: January 1, 2010 through December 31, 2010 Unit: Peach Bottom Est. Total A. Fission & Activation Gases Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

1. Total Release Ci 1.90E+02 2.01 E+02 2.29E+02 1.53E+02 3.51E+0"
2. Average Release Rate for Period pCi/sec 2.44E+01 2.56E+01 2.88E+O1 1.92E+01
3. Gamma Air Dose mrad 4.32E-02 5.24E-02 4.68E-02 3.32E-02
4. Beta Air Dose mrad 2.96E-02 3.57E-02 3.22E-02 2.28E-02
5. Percent of ODCM Limit

- Gamma Air Dose  % 4.32E-01 5.24E-01 4.68E-01 3.32E-01

- Beta Air Dose  % 1.48E-01 1.79E-01 1.61E-01 1.14E-01 B. lodines 1.Total- 1-131 Ci 3.76E-04 6.22E-04 7.47E-04 2.15E-04 1.76E+01

2. Average Release Rate for Period pCi/sec 4.84E-05 7.92E-05 9.40E-05 2.71 E-05
3. Percent of ODCM limit  % . ....

C. Particulate

1. Particulates with T 1/2 > 8 days Ci 1.78E-04 1.77E-04 2.02E-04 1.05E-04 1.94E+01
2. Average Release Rate for Period pJCi/sec 2.29E-05 2.26E-05 2.55E-05 1.32E-05
3. Percent of ODCM limit  % ....

D. Tritium j1. Total Release Ci 8.28E+00 7.62E+00 1.06E+01 1.27E+01 1.11E+01

2. Average Release Rate for Period pCi/sec 1.07E+00 9.70E-01 1.34E+00 1.60E+00
3. Percent of ODCM limit  % ....

E. Gross Alpha

1. Total Release Ci 0.OOE+00 0.OOE+00 O.OOE+00 0.OOE+00 4.OOE+02
2. Average Release Rate for Period pCi/sec 0.OOE+00 0.00E+00 0.OOE+00 0.00E+00
3. Percent of ODCM limit  % ....

F. Carbon-14

1. Total Release Ci 8.88E+00 8.88E+00 I8.88E+00 8.88E+00 2.Average Release Rate for Period iCi/sec 1.14E+00 1.13E+00 1.12E+00 1.12E+00 G. Iodine 131 & 133, Tritium, Carbon-14 & Particulate
11. Or an Dose mrem 1.40E-01 1.41E-01 1.42E-01 1.38E-01
2. Percent of ODCM Limit  % 9.31 E-01 9.42E-01 9.49E-01 9.23E-01

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Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Gaseous Release Point: Elevated Release Period: January 1, 2010 through December 31, 2010 Unit: Peach Bottom I'Nuclides Released Continuous Mode Batch Mode

1. Fission gases Unit Quarter Quarter Quarter Quarter Quarter Quarter Quarter Quarter 1 2 3 4 1 2 3 4 Kr- 85 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Kr- 85m Ci <LLD <LLD 1.48E+00 <LLD <LLD <LLD <LLD <LLD Kr-87 Ci 3.22E-01 <LLD <LLD <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD 1.59E+01 <LLD <LLD <LLD <LLD <LLD Xe-135 Ci 1.03E+01 1.17E+01 6.70E-01 2.15E+01 <LLD <LLD <LLD <LLD Xe-135m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe- 137 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-138 Ci 6.43E+00 3.57E+00 2.21E+01 <LLD <LLD <LLD <LLD <LLD Ar-41 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Unidentified Ci 4.45E+00 3.95E+00 7.51E+00 2.02E+01 <LLD <LLD <LLD <LLD Total for Period Ci 2.15E+01 1.92E+01 4.77E+01 4.17E+01 <LLD <LLD <LLD <LLD 2.Ilodines-1-131 Ci 1.13E-04 1.67E-04 2.49E-04 1.82E-04 <LLD <LLD <LLD <LLD 1-133 Ci 2.45E-04 4.45E-04 5.57E-04 2.71 E-04 <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total for Period Ci 3.58E-04 6.12E-04 8.06E-04 4.53E-04 <LLD <LLD <LLD <LLD
3. Particulates *:**
  • Sr-89 Ci 1.08E-04 1.01E-04 8.19E-05 5.13E-05 <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 Cs- 137 Ci <LLD <LLD <LLD 1.01 E-06 <LLD <LLD <LLD <LLD Ba-140 Ci 6.21 E-05 4.09E-05 3.76E-05 2.90E-05 <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 I1.18E-06 <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD 6.58E-07 <LLD <LLD <LLD <LLD <LLD Co-60 Ci 1.75E-06 8.25E-06 1.73E-05 1.75E-05 <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Aqg-110m Ci <LLD <LLD <LLD 7.10E-07 <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD 2.27E-07 <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD <LLD 4.16E-06 <LLD <LLD <LLD <LLD Total for Period Ci 1.72E-04 1.50E-04 1.37E-04 1.05E-04 <LLD <LLD <LLD <LLD
4. Tritium * ,.: , I*  ! !**:!:  :::::,:* *:*

H-3 Ci 4.04E-01 4.43E-01 7.86E-01 5.61 E-01 <LLD <LLD <LLD <LLD

5. Gross Alpha Gross Alpha Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD
6. Carbon-14 I K C-14 Ci 8.61E+00 8.61E+00 8.61E+00 8.61E+00 <LLD <LLD <LLD <LLD 14

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Gaseous Release Point: Ground Level Releases Period: January 1, 2010 through December 31, 2010 Unit: Peach Bottom Nuclides Released Continuous Mode Batch Mode

1. Fission gases Unit Quarter Quarter Quarter Quarter Quarter Quarter Quarter Quarter 1 2 3 4 1 2 3 4 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-135 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-135m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ar-41 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Unidentified Ci 1.68E+02 1.82E+02 1.81E+02 1.11E+02 <LLD <LLD <LLD <LLD Total for Period Ci 1.68E+02 1.82E+02 1.81E+02 1.11E+02 <LLD <LLD <LLD <LLD
2. lodines 14 1-131 Ci 2.63E-04 4.55E-04 4.98E-04 3.31E-05 <LLD <LLD <LLD <LLD 1-133 Ci 4.07E-04 7.89E-04 1.20E-03 1.08E-04 <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total for Period Ci 6.70E-04 1.24E-03 1.69E-03 1.41 E-04 <LLD <LLD <LLD <LLD
3. Particulates I<.. .

Sr-89 Ci <LLD <LLD <LLD <LLD <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 Cs-137 Ci 6.75E-06 <LLD <LLD <LLD <LLD <LLD 1.75E-04 <LLD Ba-1 40 Ci <LLD <LLD <LLD <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 <LLD 2.73E-05 6.49E-05 <LLD <LLD 2.71 E-05 4.79E-03 <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ag-110m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-1 41 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total for Period Ci 6.75E-06 2.73E-05 6.49E-05 <LLD <LLD 2.71 E-05 4.97E-03 <LLD

4. Tritium I I H-3 Ci 7.88E+00 7.181+00 9.83E+00 1.22E+01 <LLD <LLD <LLD <LLD
5. Gross Alpha B,. > A. > ,

Gross Alpha Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD

6. Carbon-14 7-_,

C-14 Ci 2.66E-01 2.66E-01 2.66E-01 2.66E-01 <LLD <LLD <LLD <LLD 15

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Liquid Effluents - Summary Of All Liquid Radwaste Releases Period: January 1, 2010 through December 31, 2010 Unit: Peach Bottom Es. otal A. Fission & Activation Products Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

1. Total Release not including Ci 8.58E-04 1.99E-02 3.60E-02 1.34E-02 2.11E+01 tritium, gases, alpha
2. Average Diluted concentration pCi/mI 1.75E-12 2.97E-11 5.97E-11 2.28E-1 1 during period
3. Percent of ODCM Limit

-Total Body Dose  % 5.87E-06 O.OOE+00 3.47E-04 4.03E-05

-Organ Dose  % 1.23E-05 1.23E-05 1.23E-05 1.23E-05 B. Tritium Es. I ot Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

1. Total Release Ci 2.50E+01 2.85E+01 3.07E+01 2.74E+01 A 40F+(
2. duAvrige Average diluted concentrationI dld cpCi/ml 5.11E-08 4.26E-08 5.09E-08 4.67E-08 durinl period
3. Percent of 10CFR20 limit  % 5.11E-03 4.26E-03 5.09E-03 4.67E-03 C. Dissolved and Entrained Gases I I-Est. I otai Units Quarter I Quarter 2 Quarter 3 Quarter 4 Error %

1.Total Release Ci 2.81E-05 1.23E-05 3.41E-05 5.86E-06 2.11E+01

2. Average diluted concentration pj/l 5.75E-14 1.84E-14 5.65E-14 9.98E-15
3. Percent of ODCM limit  % 2.87E-08 9.18E-09 2.82E-08 4.99E-09 D. Gross Alpha Activity Est. Iota]

Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

1. Total Release Ci 1.85E-06 1.62E-08 7.33E-07] 4.89E-08 12.30E+01 E. volume of Waste Released prior to dilution Liters 2.18E+061 4.26E+05 1.27E+06 2.33E+05 IF. Volume of Dilution Water I I

. Used During Period Liters I 4.89E+1 11 6.70E+1 1 6.03E+1 15.87E+11 16

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Liquid Release Point: Liquid Radwaste Period: January 1, 2010 through December 31, 2010 Unit: Peach Bottom Nuclides Released Continuous Mode Batch Mode Fission & Unit Activation Quarter Quarter Quarter Quarter Quarter Quarter Quarter Quarter Products 1 2 3 4 1 2 3 4 Sr-89 Ci 2.65E-07 4.48E-09 2.03E-07 1.35E-08 <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cs-134 Ci <LLD 2.39E-08 1.65E-06 1.10E-07 <LLD <LLD <LLD <LLD Cs-137 Ci 1.78E-05 4.88E-07 2.21E-05 1.47E-06 <LLD <LLD 7.98E-06 3.95E-07 1-131 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Co-58 Ci 6.47E-06 3.75E-03 9.04E-03 4.33E-03 <LLD <LLD <LLD <LLD Co-60 Ci 4.24E-04 2.36E-05 9.03E-03 1.87E-03 5.96E-05 <LLD 2.34E-05 <LLD Fe-59 Ci <LLD <LLD <LLD 2.51 E-04 <LLD <LLD <LLD <LLD Zn-65 Ci 1.06E-04 6.85E-05 1.69E-04 3.42E-05 <LLD <LLD <LLD <LLD Mn-54 Ci 1.26E-04 5.37E-06 2.43E-04 1.62E-05 <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD 5.96E-07 <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD 3.68E-04 1.49E-04 <LLD <LLD <LLD <LLD Nb-95 Ci <LLD 2.24E-04 2.29E-04 9.27E-05 <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Tc-99m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD 3.28E-07 1.49E-05 9.91E-07 <LLD <LLD <LLD <LLD La-1 40 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ag-110m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Fe-55 Ci 1.18E-04 1.51 E-02 1.57E-02 6.27E-03 <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD P-32 Ci <LLD 3.65E-09 2.53E-07 1.69E-08 <LLD <LLD <LLD <LLD Cs-136 Ci <LLD 7.56E-04 1.09E-03 4.72E-07 <LLD <LLD <LLD <LLD Tc-1 04 Ci <LLD 4.07E-08 2.82E-06 2.51 E-07 <LLD <LLD <LLD <LLD Cs-1 38 Ci <LLD <LLD 6.40E-05 3.58E-04 <LLD <LLD <LLD <LLD Total for Period Ci 7.99E-04 1.99E-02 3.60E-02 1.34E-02 5.96E-05 <LLD 3,14E-05 3.95E-07 Dissolved Entrained Gases X-133 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD 2.81E-05 1.23E-05 3.41E-05 5.86E-06 Tritium H-3 Ci 1.80E+01 2.70E+01 2.70E+01 2.68E+01 7.01E+00 1.52E+00 3.68E+00 6.35E-01 Gross Alpha Gross Alpha Ci 1.85E-06 1.62E-08 7.33E-07 4.89E-08 <LLD <LLD <LLD <LLD 17

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 3 Solid Waste and Irradiated Fuel Shipments 18

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC A. SOLID WASTE SHIPPED OFF SITE FOR BURIAL OR DISPOSAL (Not irradiated fuel)

-. V -

1. Type of Waste units 2010 Est. error %

a: Spent resin, filters, sludges, evaporator bottoms, etc M3 3.29E+01 Ci 2.96E+01 25 b: Dry compressible waste, contaminated equipment, etc. M3 9.74E+02 Ci 5.27E+00 25 c: Irradiated components, control rods, etc. M3 N/A I Ci N/A N/A d: Other(describe) oil M3 1.14E+01 I Ci 2.58E-06 25

2. Estimate of major nuclide composition (by type of waste) a: SDent resin, filters. sludges, evaporator. .bottoms.

. . .. . . I etc abundance nuclide (no cutoff) activity (Ci)

H-3 0.100% 2.97E-02 C-14 0.906% 2.68E-01 Cr-51 0.000% 7.57E-06 Mn-54 3.616% 1.07E+00 Fe-55 26.188% 7. 75E+00 Fe-59 0.000% 1.11 E-04 Co-58 0.029% 8.46E-03 Co-60 51.362%/o 1.52E+01 Ni-63 2.000% 5.92E-01 Zn-65 4.089% 1.21E+00 Sr-89 0.000% 1.30E-04 Sr-90 0.032% 9.61 E-03 Zr-95 0.000% 2.06E-05 Nb-95 0.000% 8.33E-07 Ag-110m 0.412% 1.22E-01 Sb-1 22 0.000% 1.22E-46 Sb-1 24 0.000% 1.93E-05 1-131 0.000% 6.87E-1 7 Cs-1 34 1.483% 4.39E-01 Cs-1 37 9.326% 2.76E+00 Ba-1 40 0.000% 7.72E-i 1 La-1 40 0.000% 3.68E-45 Ce-141 0.000% 1.27E-05 Ce-144 0.362% 1.07E-01 Nd-147 0.000% 1.63E-15 Eu-1 52 0.015% 4.39E-03 Hf-175 0.000% 1.67E-05 Pu-238 0.000% 1.02E-04 Pu-241 0.078% 2.31 E-02 Am-241 0.000% 2.94E-05 Cm-242 0.000% 1.15E-05 Cm-243 0.001% 1.62E-04 19

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC b: Dry compressible waste, contaminated equipment, etc.

abundance nuclide (no cutoff) activity (Ci)

H-3 0.045% 2.38E-03 C-14 0.188% 9.90E-03 Cr-51 0.302% 1.59E-02 Mn-54 5.789% 3.05E-01 Fe-55 24.556% 1.29E+00 Fe-59 0.141% 7.44E-03 Co-58 0.408% 2.15E-02 Co-60 48.601% 2.56E+00 Ni-63 1.530% 8.06E-02 Zn-65 4.726% 2.49E-01 Sr-89 0.054% 2.84E-03 Sr-90 0.049% 2.58E-03 Nb-95 0.074% 3.88E-03 Ag-110m 0.420% 2.21E-02 Cs-134 1.338% 7.05E-02 Cs-137 11.533% 6.08E-01 Ce-144 0.216% 1.14E-02 Eu-1 52 0.000% 4.47E-08 Pu-238 0.000% 1.59E-05 Pu-241 0.030% 1.59E-03 Cm-242 0.000% 5.58E-06 Cm-243 0.001% 2.83E-05 c: Irradiated components, control rods, etc.

I abundance nuclide (no cutoff) Iactivity (Ci)

None for 2010 d: Other escribe) oil abundance nuclide (no cutoff) activity (Ci)

Co-60 28.976% 7.47E-07 Cs-137 22.149% 5.71 E-07 Ce-144 48.875% 1.26E-06

3. Solid Waste Disposition Number of shipments Mode of Transportation Destination 7 hiQhway Energy Solutions (Clive, UT) 32 highway Energy Solutions (Oak Ridge, TN)

B. IRRADIATED FUEL SHIPMENTS (Disposition)

No shipment of irradiated fuel were made during the reporting period of 2010.

C. Changes to Process Control Program (PCP)

There no changes made to RW-AA-100 "Process Control Program for Radioactive Waste" in 2010.

20

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 4 Radiological Impact on Man 21

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

1. Radiological Impact on Man A summary of gaseous and liquid radiation annual doses to MEMBERS OF THE PUBLIC as calculated by the ODCM follows:

Location  % of Effluent Applicable Organ stimated Age Distance Direction Applicable Limit Unit Dose Efunn Group (meters) (toward) Limit Noble Gas Gamma- Air 1.78E-01 All 1097 SSE 8.90E-01 20 mrad Dose Noble Gas Beta - Air Dose 1.21E-01 All 1097 SSE 3.03E-01 40 mrad Noble Gas Total Body 2.68E-01 All 1097 SSE 2.68E+00 10 mrem (Gamma)

Noble Gas Skin (Beta) 4.89E-01 All 1097 SSE 1.63E+00 30 mrem Iodine, Particulate, Bone 5.49E-01 Child 1097 SSE 1.83E+00 Carbon-14 & 30 mrem Tritium Liquid Total Body 1.18E-05 Adult Site Boundary 1.97E-04 6 mrem Liquid Liver 1.85E-05 Teen 9.25E-05 20 mrem Direct Radiation Total Body <LLD All 1150 [ SSE <LLD 22 mrem 40 CFR Part 190 Compliance Total Dose Total Body 2.68E-01 All 1148 SSE 1.07E+00 25 mrem Total Dose Thyroid 6.50E-01 All 1148 SSE 2.60E+00 25 mrem Total Dose Bone 6.50E-01 All 1148 SSE 8.67E-01 75 mrem Total Dose Bone 6.50E-01 All 1148 SSE 2.17E+01 3 mrem Total Dose Liver 1.85E-05 All 1148 SSE 6.17E-04 3 mrem Total Dose Thyroid 6.50E-01 All 1148 SSE 1.18E+00 55 mrem Doses calculated were well below all ODCM limits.

2. 40 CFR 190 Doses The annual dose equivalent to a real individual who is located beyond the SITE BOUNDARY from all uranium fuel cycle sources within 8 kilometers were well below 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.

22

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Attachment 5 Meteorological Data 23

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 1 11 2 1 0 0 15 NNE 0 6 0 0 0 0 6 NE 4 0 0 0 0 0 4 ENE 13 2 0 0 0 0 15 E 10 8 0 0 0 0 18 ESE 1 10 0 0 0 0 11 SE 0 4 0 0 0 0 4 SSE 0 0 0 0 0 0 0 S 0 1 0 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 1 0 0 0 1 WSW 0 6 2 0 0 0 8 W 0 15 3 0 0 0 18 WNW 0 9 21 0 0 0 30 NW 0 6 17 0 0 0 23 NNW 0 8 14 0 0 0 22 Variable 0 0 0 0 0 0 0 Total 29 86 60 1 0 0 176 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 24

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 0 10 2 13 NNE 1 0 0 1 NE 2 0 0 2 ENE 3 0 0 3 E 2 0 0 2 ESE 3 2 0 5 SE 0 2 0 2 SSE 0 0 0 0 S 0 0 0 0 SSW 0 0 0 0 SW 0 1 2 3 WSW 0 3 0 3 W 1 10 5 17 WNW 2 17 32 57 NW 1 11 48 69 NNW 0 14 17 31 Variable 0 0 0 0 Total 15 70 106 17 0 0 208 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 25

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 3 11 NNE 0 0 NE 0 1 ENE 0 0 E 0 1 ESE 0 0 SE 0 2 SSE 0 0 S 0 0 SSW 1 2 SW 1 3 WSW 0 1 W 0 9 WNW 12 18 NW 18 27 NNW 6 11 Variable 0 0 Total 4 32 41 9 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: 2 26

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 9 39 39 1 88 NNE 29 19 2 0 50 NE 25 8 0 0 33 ENE 6 0 0 0 6 E 18 0 0 0 18 ESE 6 7 0 0 13 SE 7 10 3 4 24 SSE 0 7 4 0 12 S 1 5 4 2 12 SSW 4 3 0 0 7 SW 2 5 1 1 9 WSW 0 12 0 0 12 W 12 42 13 2 69 WNW 6 81 91 15 193 NW 6 73 170 47 296 NNW 10 47 81 2 140 Variable 0 0 0 0 0 Total 141 358 408 74 1 0 982 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 27

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 12 6 1 0 0 0 19 NNE 8 6 0 0 0 0 14 NE 20 6 0 0 0 0 26 ENE 19 0 0 0 0 0 19 E 19 3 0 0 0 0 22 ESE 17 11 0 0 0 0 28 SE 10 16 1 1 0 0 28 SSE 5 14 2 0 0 0 21 S 8 4 3 0 0 0 15 SSW 4 1 1 0 0 0 6 SW 7 5 0 0 0 0 12 WSW 17 49 1 0 0 0 67 W 15 71 6 0 0 0 92 WNW 12 54 11 0 0 0 77 NW 11 15 5 2 0 0 33 13 18 2 0 0 0 33 Variable 0 0 0 0 0 0 0 Total 197 279 33 3 0 0 512 Hours of calm in this'stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 28

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 2 0 0 2 NNE 6 0 0 6 NE 1 0 0 1 ENE 3 0 0 3 E 4 0 0 4 ESE 2 0 0 2 SE 3 0 0 3 SSE 2 0 0 2 S 2 0 0 2 SSW 3 0 0 3 SW 10 0 0 12 WSW 7 11 0 0 0 0 18 W 12 6 0 0 0 0 18 7 3 0 0 0 0 10 NW 2 2 0 0 0 0 4 NNW 6 1 0 0 0 0 7 Variable 3 0 0 0 0 0 3 Total 75 25 0 0 0 0 100 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 29

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 1 NNE 3 3 NE 3 3 ENE 5 5 E 5 5 ESE 1 1 SE 2 2 SSE 5 5 S 3 3 SSW 3 3 SW 7 8 WSW 13 14 W 13 13 WNW 12 13 NW 6 6 NNW 2 2 Variable 1 1 Total 84 4 0 0 0 0 88 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: 2 30

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 NNE 0 0 NE 0 1 ENE 0 1 E 0 8 ESE 0 6 SE 0 5 SSE 0 0 S 0 0 SSW 0 0 SW 0 0 WSW 0 5 W 0 0 WNW 0 2 NW 0 0 NNW 0 1 Variable 0 0 Total 0 12 14 2 1 0 29 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 31

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 5 NNE 0 0 0 NE 0 0 0 ENE 0 0 1 E 0 0 4 ESE 0 0 7 SE 0 0 2 SSE 0 0 0 S 0 0 1 SSW 0 0 0 SW 0 0 1 WSW 0 0 6 W 0 0 6 WNW 0 1 2 13 7 0 23 NW 0 0 2 4 3 0 9 NNW 0 1 4 2 1 0 8 Variable 0 0 0 0 0 0 0 Total 0 12 21 26 14 0 73 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 32

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 2 2 1 7

.NNE 0 2 1 0 4 NE 0 0 0 0 0 ENE 0 2 0 0 2 E 0 3 0 0 3 ESE 0 0 1 0 4 SE 0 1 0 0 3 SSE 0 0 0 0 0 S 0 0 0 0 0 SSW 0 0 1 0 1 SW 0 0 1 0 3 WSW 0 2 1 0 7 W 0 0 12 2 22 WNW 0 0 14 21 51 NW 0 1 21 9 43 NNW 0 2 4 2 15 Variable 0 0 0 0 0 Total 0 15 43 58 35 14 165 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabi lity class: 0 Hours of missing stability measurements in all s tability cl asses: 2 33

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 3 2 34 43 16 3 101 NNE 1 8 17 10 10 0 46 NE 1 4 13 1 5 3 27 ENE 3 14 17 11 6 10 61 E 0 4 16 7 1 0 28 ESE 1 9 27 9 3 0 49 SE 2 7 17 16 1 6 49 SSE 0 1 7 11 0 3 22 S 2 2 8 6 2 1 21 SSW 0 2 3 0 1 0 6 SW 1 3 11 2 0 2 19 WSW 1 5 14 17 2 0 39 W 2 5 24 64 25 19 139 WNW 1 8 15 128 116 58 326 NW 0 11 28 94 96 39 268 NNW 0 5 31 68 24 4 132 Variable 0 0 0 0 0 0 0 Total 18 90 282 487 308 148 1333 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 34

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 1 10 4 0 0 15 NNE 0 6 3 1 0 0 10 NE 0 1 1 1 0 0 3 ENE 0 3 9 2 0 0 14 E 2 1 4 5 0 0 12 ESE 1 2 13 8 1 0 25 SE 0 2 10 4 0 17 SSE 1 5 4 4 0 0 14 S 0 2 2 2 0 0 6 SSW 1 4 5 1 1 0 12 SW 0 3 5 4 2 0 14 WSW 0 3 18 18 2 0 41 W 0 4 18 37 18 0 77 WNW 1 1 10 39 20 0 71 NW 1 3 15 23 3 0 45 NNW 2 1 8 2 0 0 13 Variable 0 0 0 0 0 0 0 Total 9 42 135 155 48 0 389 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 35

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 3 0 9 NNE 1 0 1 NE 0 0 1 ENE 0 0 4 E 1 0 6 ESE 0 0. 7 SE 0 0 7 SSE 1 0 2 S 1 0 6 SSW 0 0 8 SW 1 0 4 WSW 0 0 8 W 0 2 12 12 0 0 26 1 2 2 2 0 0 7 NW 0 2 3 2 0 0 7 NNW 0 0 3 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 9 27 52 18 0 0 106 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 36

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: January - March 2010 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 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 1 SSE 0 3 0 0 6 S 0 1 0 0 3 SSW 1 4 0 0 7 SW 1 4 0 0 8 WSW 0 1 10 0 0 0 11 W 0 3 11 1 0 0 15 WNW 1 1 1 0 0 0 3 NW 0 2 3 4 0 0 9 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 3 19 36 5 0 0 63 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 2 37

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 1 17 0 0 0 0 18 NNE 2 4 0 0 0 0 6 NE 5 1 0 0 0 0 6 ENE 1 0 0 0 0 2 E 7 3 0 0 0 0 10 ESE 4 14 0 0 0 0 18 SE 6 13 1 0 0 0 20 SSE 2 15 3 0 0 0 20 S 0 12 5 0 0 0 17 SSW 0 2 0 0 0 0 2 SW 0 4 2 0 0 0 6 WSW 0 3 1 0 0 0 4 W 0 3 1 0 0 0 4 WNW 0 13 6 0 0 0 19 0 7 8 0 0 0 15 NNW 0 26 5 0 0 0 31 Variable 0 0 0 0 0 0 0 Total 28 138 32 0 0 0 198 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 488 38

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 0 8 NNE 0 3 NE 0 2 ENE 0 3 E 0 9 ESE 0 8 SE 0 6 SSE 0 10 S 0 5 SSW 0 1 SW 0 6 WSW 0 5 5 0 0 0 10 W 2 7 3 4 0 0 16 WNW 0 8 4 0 0 0 12 NW 1 12 4 0 0 0 17 NNW 0 8 3 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 33 66 24 4 0 0 127 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 488 39

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 3 7 NNE 1 1 NE 0 0 ENE 1 1 E 1 1 ESE 0 0 SE 1 4 SSE 0 7 S 0 1 SSW 0 1 SW 0 2 WSW 0 2 W 0 4 WNW 0 5 NW 0 6 NNW 2 13 Variable 0 0 Total 9 32 12 2 0 0 55 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: 488 40

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 0 0 0 0 N 19 16 35 0 0 0 0 NNE 7 0 7 0 0 0 0 NE 7 0 7 0 0 0 0 ENE 3 0 3 0 0 0 0 E 8 1 9 0 0 0 0 ESE 9 0 9 1 0 0 0 SE 6 19 26 7 0 0 0 SSE 10 44 61 3 0 0 0 S 15 19 37 3 0 0 0 SSW 6 5 14 7 0 0 0 SW 3 17 27 5 0 0 0 WSW 5 16 26 W 2 15 4 1 0 0 22 WNW 4 22 16 1 0 0 43 NW 10 27 6 0 0 0 43 NNW 13 20 2 0 0 0 35 Variable 1 0 0 0 0 0 1 Total 128 221 54 2 0 0 405 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 488 41

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 18 22 0 0 0 0 40 NNE 6 0 0 0 0 0 6 NE 5 0 0 0 0 0 5 ENE 2 0 0 0 0 0 2 E 15 0 0 0 0 0 15 ESE 36 3 0 0 0 0 39 SE 24 10 0 0 0 0 34 SSE 36 34 0 0 0 0 70 S 32 24 1 0 0 0 57 SSW 13 12 1 0 0 0 26 SW 10 8 3 0 0 0 21 WSW 10 19 0 0 0 0 29 W 18 18 1 0 0 0 37 WNW 24 18 6 0 0 0 48 NW 23 38 6 0 0 0 67 NNW 16 17 2 0 0 0 35 Variable 2 0 0 0 0 0 2 Total 290 223 20 0 0 0 533 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 488 42

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 N 3 0 0 0 0 0 3 NNE 1 0 0 0 0 0 1 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 7 0 0 0 0 0 7 ESE 11 0 0 0 0 0 11 SE 6 0 0 0 0 0 6 SSE 5 1 0 0 0 0 6 S 14 2 0 0 0 0 16 SSW 12 3 0 0 0 0 15 SW 30 5 0 0 0 0 35 WSW 39 8 0 0 0 0 47 W 38 15 0 0 0 0 53

  • WNW 23 9 0 0 0 0 32 NW 12 5 0 0 0 0 17 NNW 5 0 0 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 206 48 0 0 0 0 254 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 488 43

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 2 0 0 0 0 0 2 NNE 3 0 0 0 0 0 3 NE 1 0 0 0 0 0 1 ENE 5 0 0 0 0 0 5 E 4 0 0 0 0 0 4 ESE 12 0 12 SE 3 0 3 SSE 5 0 5 S 2 0 2 SSW 7 0 7 SW 17 0 17 WSW 33 0 36 W 11 0 14 WNW 3 0 4 NW 1 0 1 NNW 0 0 0 Variable 0 0 0 Total 109 0 116 Hours of calm in this stability class: 3 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 488 44

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 1 1 0 0 0 2 NNE 0 2 0 0 0 0 2 NE 0 4 0 0 0 0 4 ENE 0 2 0 0 0 0 2 E 0 4 2 0 0 0 6 ESE 0 2 9 5 0 0 16 SE 2 4 9 0 0 15 SSE 0 5 2 1 0 8 S 0 7 2 0 0 9 SSW 0 0 0 0 1 SW 0 1 1 1 0 3 WSW 0 0 0 1 0 1 W 0 0 1 0 0 1 WNW 0 4 4 3 1 12 NW 0 0 4 0 0 4 NNW 1 8 4 1 0 14 Variable 0 0 0 0 0 0 0 Total 0 18 42 32 7 1 100 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 488 45

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 1 4 0 0 0 5 NNE 0 0 0 0 0 1 NE 0 3 0 0 0 0 3 ENE 0 2 0 0 0 0 2 E 0 6 0 0 0 0 6 ESE 0 2 1 1 0 0 4 SE 0 0 2 1 0 0 3 SSE 0 1 5 0 0 0 6 S 0 0 6 4 0 0 10 SSW 0 0 2 0 0 0 2 SW 0 0 4 1 1 0 6 WSW 0 0 1 2 3 0 6 W 0 0 6 2 3 4 15 WNW 0 0 0 3 5 2 10 0 2 4 5 2 0 13 NNW 0 3 10 2 0 0 15 Variable 0 0 0 0 0 0 0 Total 0 21 45 21 14 6 107 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: 488 46

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 4 NNE 0 8 NE 0 2 ENE 0 2 E 0 6 ESE 0 11 SE 0 8 SSE 0 9 S 0 5 SSW 0 2 SW 0 7 WSW 0 7 W 0 1 8 4 1 0 14 0 4 3 4 2 1 14 NW 0 2 9 8 3 0 22 NNW 0 3 7 0 0 0 10 Variable 0 0 0 0 0 0 0 Total 2 39 51 26 12 1 131 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 488 47

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 2 17 6 0 26 NNE 5 7 6 0 20 NE 4 20 5 0 31 ENE 12 15 0 0 29 E 7 12 1 0 21 ESE 11 15 13 3 43 SE 15 31 11 1 61 SSE 8 19 16 0 46 S 9 26 16 2 54 SSW 7 13 8 3 32 SW 3 12 16 5 37 WSW 2 14 13 3 33 W 5 14 16 5 50 WNW 5 15 25 18 67 NW 11 28 21 9 69 NNW 4 20 11 1 36 Variable 0 0 0 0 0 Total 19 110 278 184 50 14 655 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: 488 48

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 2 9 2 13 NNE 1 5 0 7 NE 2 2 2 6 ENE 7 6 0 14 E 5 4 1 13 ESE 7 10 2 21 SE 16 10 3 30 SSE 7 18 6 34 S 4 27 20 56 SSW 3 21 9 35 SW 9 22 4 37 WSW 2 14 10 26 W 7 15 12 36 WNW 7 14 16 38 NW 6 25 30 65 NNW 2 16 5 25 Variable 0 0 0 0 Total 21 87 218 122 8 0 456 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 cl asses: 488 49

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 1 1 1 0 0 3 NNE 0 1 0 0 0 0 1 NE 0 3 1 0 0 0 4 ENE 1 3 0 0 0 0 4 E 1 2 2 0 0 0 5 ESE 0 2 1 0 0 0 3 SE 0 1 3 0 0 0 4 SSE 0 4 6 0 0 0 10 S 0 6 2 2 1 0 11 SSW 0 1 9 11 0 0 21 SW 2 6 13 4 0 0 25 WSW 0 4 8 6 0 0 18 W 0 3 10 15 0 0 28 WNW 0 3 12 9 1 0 25 NW 2 1 4 13 0 0 20 NNW 1 1 3 3 0 0 8 Variable 0 0 0 0 0 0 0 Total 7 42 75 64 2 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: 488 50

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: April - June 2010 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 0 1 NNE 0 0 1 NE 0 0 3 ENE 0 0 1 E 0 0 2 ESE 0 0 0 SE 0 0 0 SSE 0 0 0 S 0 0 4 SSW 1 0 9 SW 0 0 17 WSW 0 0 3 W 0 0 7 0 0 2 NW 0 0 6 NNW 0 0 1 Variable 0 0 0 Total 1 26 21 9 0 0 57 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 488 51

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 32 0 0 0 0 32 NNE 4 4 0 0 0 0 8 NE 3 2 0 0 0 0 5 ENE 10 0 0 0 0 0 10 E 3 0 0 0 0 0 3 ESE 12 3 0 0 0 0 15 SE 3 12 0 0 0 0 15 SSE 1 26 4 0 0 0 31 S 1 20 0 0 0 0 21 SSW 1 17 0 0 0 0 18 SW 1 16 0 0 0 0 17 WSW 1 3 0 0 0 0 4 W 1 11 5 0 0 0 17 WNW 1 2 2 0 0 0 5 NW 1 10 1 0 0 0 12 NNW 2 21 2 0 0 0 25 Variable 0 0 0 0 0 0 0 Total 45 179 14 0 0 0 238 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: 29 52

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 0 0 0 0 13 N 3 10 0 0 0 0 5 NNE 4 1 0 0 0 0 5 NE 5 0 0 0 0 0 3 ENE 3 0 0 0 0 0 1 E 1 0 0 0 0 0 2 ESE 2 0 0 0 0 0 3 SE 2 1 2 0 0 0 23 SSE 2 19 S 0 9 1 0 0 0 10 SSW 2 4 0 0 0 0 6 SW 3 10 0 0 0 0 13 WSW 3 6 0 0 0 0 9 W 4 4 4 0 0 0 12 WNW 1 3 0 0 0 0 4 NW 0 7 0 0 0 0 7 NNW 2 20 2 0 0 0 24 Variable 0 0 0 0 0 0 0 Total 37 94 9 0 0 0 140 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all stabi lity classes: 29 53

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 1 5 0 0 0 0 6 NNE 2 1 0 0 0 0 3 NE 3 0 0 0 0 0 3 ENE 3 0 0 0 0 0 3 E 2 0 0 0 0 0 2 ESE 1 0 0 0 0 0 1 SE 1 1 0 0 0 0 2 SSE 0 11 0 0 11 S 2 4 1 0 7 SSW 2 2 0 0 4 SW 1 5 0 0 6 WSW 0 4 0 0 4 W 1 2 0 0 3 WNW 3 4 0 0 7 NW 0 4 0 0 4 NNW 5 7 0 0 12 Variable 0 0 0 0 0 Total 27 50 1 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: 29 54

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 14 24 1 0 0 0 39 NNE 8 1 0 0 0 0 9 NE 8 0 0 0 0 0 8 ENE 5 0 0 0 0 0 5 E 4 0 0 0 0 0 4 ESE 2 0 0 0 0 0 2 SE 7 9 0 0 0 0 16 SSE 14 59 5 0 78 S 10 12 2 0 24 SSW 7 12 0 0 19 SW 7 11 0 0 18 WSW 10 10 0 0 20 W 7 12 3 0 22 WNW 12 14 1 0 27 NW 9 45 0 0 54 NNW 11 35 0 0 46 Variable 0 0 0 0 0 Total 135 244 12 0 391 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: 29 55

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 16 0 0 N 19 35 1 0 0 NNE 14 15 0 0 0 NE 6 6 0 0 0 ENE 4 4 0 0 0 E 8 8 0 0 0 ESE 8 8 SE 32 24 7 1 64 SSE 61 93 10 3 167 S 56 27 1 0 84 SSW 22 6 1 0 29 SW 26 13 0 0 39 WSW 29 14 0 0 43 W 44 18 0 0 62 WNW 39 27 0 0 66 NW 37 37 1 0 75 NNW 31 49 5 0 85 Variable 2 0 0 0 2 Total 438 325 25 4 0 792 Hours of calm in this stability class: 6 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 29 56

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 N 5 1 0 0 0 0 6 NNE 0 1 0 0 0 0 1 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 2 0 0 0 0 0 2 ESE 1 0 0 0 0 0 1 SE 4 0 0 0 0 0 4 SSE 10 5 0 0 0 0 15 S 12 1 0 0 0 0 13 SSW 24 2 0 0 0 0 26 SW 41 4 0 0 0 0 45 WSW 39 18 0 0 0 0 57 W 52 13 1 0 0 0 66 WNW 28 7 0 0 0 0 35 NW 27 10 0 0 0 0 37 NNW 10 1 0 0 0 0 11 Variable 1 0 0 0 0 0 1 Total 256 63 1 0 0 0 320 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: 29 57

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 NNE 0 0 NE 0 0 ENE 0 0 E 0 0 ESE 0 0 SE 0 0 SSE 2 2 S 1 1 SSW 8 9 SW 80 86 WSW 66 73 W 31 33 WNW 6 6 NW 2 2 NNW 2 2 Variable 0 0 Total 198 16 0 0 0 0 214 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: 29 58

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 5 9 0 0 0 14 NNE 0 4 4 0 0 0 8 NE 0 0 1 0 0 0 1 ENE 0 6 0 0 0 0 6 E 1 12 1 0 0 0 14 ESE 0 4 13 0 0 0 17 SE 0 1 11 2 0 0 14 SSE 0 2 3 0 0 0 5 S 0 3 4 3 0 0 10 SSW 0 1 13 0 0 0 14 SW 0 4 4 1 0 0 9 WSW 0 0 3 0 1 0 4 W 0 0 4 1 3 0 8 WNW 0 0 1 0 0 0 1 NW 0 1 3 7 0 0 11 NNW 0 0 4 3 0 0 7 Variable 0 0 0 0 0 0 0 Total 1 43 78 17 4 0 143 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: 29 59

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 t> 24 Total N 0 0 15 NNE 0 0 7 NE 1 0 7 ENE 1 0 5 1 0 4 ESE 0 0 6 SE 0 0 8 SSE 0 0 8 S 0 0 9 SSW 0 0 13 SW 0 0 16 WSW 0 0 3 W 0 0 6 WNW 0 0 3 NW 0 0 13 NNW 0 1 7 2 0 0 10 Variable 0 0 0 0 0 0 0 Total 3 50 52 23 5 0 133 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: 29 60

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 Stability Class - Slightly Unstable - 316Ft-33Ft Delta-T (F)

Winds Measured at 320 Feet Win d Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0 6 2 9 NNE 1 4 0 6 NE 2 1 0 3 ENE 2 2 0 4 E 0 1 0 1 ESE 0 2 1 3 SE 0 1 0 8 SSE 0 1 0 6 S 0 3 4 14 SSW 0 5 2 12 SW 1 3 2 15 WSW 0 8 2 12 W 0 3 2 15 WNW 0 1 1 2 NW 0 1 12 22 NNW 0 1 0 8 Variable 0 0 0 0 Total 6 43 59 28 4 0 140 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: 29 61

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 16 19 46 NNE 12 15 4 37 NE 3 10 3 19 ENE 8 10 6 29 E 6 12 3 24 ESE 8 17 9 37 SE 6 30 30 75 SSE 15 39 27 89 S 15 20 15 53 SSW 11 13 3 30 SW 9 13 3 25 WSW 11 15 5 32 W 18 14 4 43 WNW 7 17 6 35 NW 14 52 25 95 NNW 20 24 11 60 Variable 0 0 0 0 Total 36 173 317 173 23 7 729 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: 29 62

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 9 14 8 33 NNE 1 7 6 1 15 NE 2 6 5 1 14 ENE 2 13 19 0 34 E 3 6 7 1 17 ESE 6 13 7 3 29 SE 2 9 11 5 27 SSE 4 14 19 19 56 S 0 16 42 20 85 SSW 1 11 27 13 55 SW 2 11 19 6 39 WSW 1 8 10 19 41 W 1 11 18 15 49 WNW 0 7 13 23 46 NW 1 14 36 30 81 NNW 1 17 39 20 78 Variable 0 0 0 0 0 Total 27 172 292 184 22 2 699 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: 29 63

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 8 7 0 0 0 18 NNE 8 2 0 0 0 10 NE 4 0 0 0 0 7 ENE 6 0 0 0 0 7 E 5 0 0 0 0 6 ESE 0 0 0 0 0 1 SE 3 0 0 0 0 3 SSE 8 0 0 0 0 8 S 11 4 2 0 0 17 SSW 6 7 1 0 0 14 SW 8 4 4 0 0 19 WSW 6 13 7 2 0 31 W 6 9 6 7 0 28 WNW 5 4 5 1 0 17 NW 4 15 5 0 0 26 NNW 8 12 5 0 0 26 Variable 0 0 0 0 0 2 Total 22 96 77 35 10 0 240 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stabili ty class: 0 Hours of missing stability measurements in all sta bility class es: 29 64

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: July - September 2010 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 0 1 NNE 0 0 1 NE 1 0 3 ENE 0 0 2 E 0 0 0 ESE 0 0 0 SE 0 0 0 SSE 0 0 0 S 3 0 4 SSW 3 0 7 SW 1 0 8 WSW 0 0 9 W 0 0 15 0 7 6 4 0 0 17 0 2 15 1 0 0 18 NNW 1 3 5 0 0 0 9 Variable 0 0 0 0 0 0 0 Total 9 33 36 14 2 0 94 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stabi lity class: 0 Hours of missing stability measurements in all stability classes: 29 65

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 11 0 11 NNE 0 1 0 1 NE ENE 0 4 E 0 8 ESE 0 5 SE 0 2 SSE 0 0 S 0 2 SSW 0 3 SW 0 4 WSW 0 3 W 0 3 WNW 0 0 NW 0 5 0 16 0 17 Variable 0 0 0 0 Total 10 53 6 0 0 0 69 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability cl asses: 6 66

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 2 11 0 13 NNE 0 5 NE 0 3 ENE 0 2 E 0 2 ESE 0 2 SE 0 2 SSE 0 2 S 0 5 SSW 0 2 SW 0 6 WSW 0 5 W 1 12 0 20 WNW 0 9 15 2 0 0 26 1 19 37 14 0 0 71 NNW 0 7 3 0 0 0 10 Variable 0 0 0 0 0 0 0 Total 18 74 68 16 0 0 176 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: 6 67

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 1 0 6 NNE 1 0 2 NE 1 0 1 ENE 1 0 1 E 0 0 1 ESE 1 0 1 SE 0 0 3 SSE 0 0 2 S 0 0 3 SSW 0 0 0 SW 1 0 3 WSW 0 0 2 W 0 6 8 1 0 0 15 WNW 1 7 12 2 0 0 22 NW 2 14 17 3 0 0 36 2 6 3 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 11 49 43 6 0 0 109 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: 6 68

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 5 13 3 0 21 NNE 6 0 0 0 6 NE 12 0 0 0 12 ENE 12 0 0 0 12 E 10 0 0 0 10 ESE 9 2 0 0 11 SE 7 17 10 7 41 SSE 4 16 8 0 28 S 3 14 5 0 22 SSW 2 3 1 0 6 SW 6 4 1 0 11 WSW 3 12 3 0 18 W 3 51 45 3 102 WNW 4 60 70 5 139 NW 6 88 101 25 222 NNW 12 37 17 0 66 Variable 0 0 0 0 0 Total 104 317 264 40 0 727 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: 6 69

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 23 27 2 52 NNE 15 2 0 17 NE 20 0 0 20 ENE 20 0 0 20 E 18 4 0 22 ESE 23 10 3 36 SE 19 10 6 35 SSE 17 7 3 27 S 14 17 7 38 SSW 12 8 1 21 SW 14 9 2 25 WSW 16 57 2 75 W 28 72 0 100 WNW 23 90 10 123 NW 27 61 14 102 NNW 14 32 4 50 Variable 2 0 0 2 Total 305 406 54 0 0 0 765 Hours of calm in this stability class: 4 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 6 70

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 N 2 1 0 0 0 0 3 NNE 1 0 0 0 0 0 1 NE 3 0 0 0 0 0 3 ENE 3 0 0 0 0 0 3 E 11 0 0 0 0 0 11 ESE 14 0 0 0 0 0 14 SE 7 0 0 0 0 0 7 SSE 4 0 0 0 0 0 4 S 8 0 0 0 0 0 8 SSW 7 0 0 0 0 0 7 SW 20 2 0 0 0 0 22 WSW 21 13 0 0 0 0 34 W 27 8 0 0 0 0 35 WNW 16 4 0 0 0 0 20 NW 9 1 0 0 0 0 10 NNW 4 1 0 0 0 0 5 Variable 1 0 0 0 0 0 1 Total 158 30 0 0 0 0 188 Hours of calm in this stability class: 8 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 6 71

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 NNE 2 2 NE 3 3 ENE 1 1 E 7 7 ESE 5 5 SE 7 7 SSE 0 0 S 5 5 SSW 6 6 SW 29 29 WSW 44 48 W 14 19 WNW 11 11 NW 5 6 NNW 2 2 Variable 0 0 Total 141 10 0 0 0 0 151 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: 6 72

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 0 0 0 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 0 0 0 0 0 0 0 E 0 0 1 1 0 0 0 ESE 2 0 0 3 0 0 0 SE 3 0 0 0 0 0 0 SSE 0 0 0 1 0 0 0 S 1 0 0 1 0 0 0 SSW 1 0 0 1 0 0 0 SW 1 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 Total 0 1 7 0 0 0 8 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: 9 73

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 4 NNE 0 0 1 NE 0 0 1 ENE 1 0 1 E 0 0 0 ESE 0 0 0 SE 0 0 3 SSE 0 0 1 S 0 0 1 SSW 0 0 2 SW 0 0 6 WSW 0 0 1 W 0 0 4 WNW 0 0 1 NW 0 0 7 NNW 0 0 6 Variable 0 0 0 Total 1 3 17 17 1 0 39 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: 9 74

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 4 4 0 9 NNE 0 5 2 1 8 NE 1 0 0 0 4 ENE 0 0 0 0 0 E 0 2 0 0 2 ESE 0 1 0 0 1 SE 0 0 1 0 1 SSE 0 0 0 0 0 S 0 1 1 1 4 SSW 0 0 0 0 1 SW 0 0 3 0 4 WSW 0 0 3 2 7 W 0 0 3 2 14 WNW 0 0 2 13 22 NW 0 1 2 12 27 NNW 0 3 5 0 12 Variable 0 0 0 0 0 Total 1 17 26 32 31 9 116 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: 9 75

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 12 12 14 1 1 40 NNE 2 12 9 6 0 0 29 NE 4 7 2 5 0 0 18 ENE 4 4 0 0 0 0 8 E 2 3 2 1 0 0 8 ESE 1 9 16 2 1 0 29 SE 3 11 23 5 11 14 67 SSE 0 8 16 5 4 1 34 S 0 2 19 16 10 1 48 SSW 1 4 7 5 1 0 18 SW 0 8 4 3 1 1 17 WSW 3 0 8 13 5 2 31 W 2 0 13 63 35 28 141 WNW 0 5 15 77 72 25 194 NW 2 15 36 113 92 59 317 NNW 2 11 28 47 19 3 110 Variable 0 0 0 0 0 0 0 Total 26 ii 210 375 252 135 1109 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: 9 76

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 6 24 11 2 48 NNE 4 8 5 2 21 NE 6 5 4 0 17 ENE 6 2 1 0 11 E 2 2 2 0 10 ESE 8 21 2 7 39 SE 15 9 4 1 31 SSE 13 5 0 0 20 S 11 22 7 1 43 SSW 4 19 10 0 37 SW 9 12 8 1 32 WSW 2 7 28 9 49 W 1 14 58 8 82 WNW 2 11 45 13 73 NW 7 17 38 6 69 NNW 2 24 17 6 50 Variable 0 0 0 0 0 Total 35 98 202 240 56 1 632 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: 9 77

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 3 9 0 0 0 12 NNE 2 2 3 0 0 0 7 NE 2 2 0 0 0 0 4 ENE 0 3 1 0 0 0 4 E 0 1 0 0 0 0 1 ESE 0 5 1 0 0 0 6 SE 0 6 1 0 0 0 7 SSE 1 5 1 0 0 0 7 S 0 9 15 1 0 25 SSW 1 13 12 0 0 26 SW 0 4 8 10 0 22 WSW 1 8 9 10 0 28 W 0 2 8 11 0 21 WNW 2 0 6 8 0 18 NW 1 2 3 7 0 13 NNW 1 1 3 1 0 6 Variable 0 0 0 0 0 0 Total 11 66 80 48 0 207 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: 9 78

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Peach Bottom Nuclear Station Period of Record: October - December 2010 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 7 9 NNE 9 9 NE 1 3 ENE 0 0 E 0 4 ESE 0 2 SE 0 2 SSE 0 2 S 0 1 SSW 1 8 SW 0 5 WSW 3 8 W 10 13 WNW 6 11 NW 0 3 NNW 5 8 Variable 0 0 Total 18 18 42 10 0 0 88 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: 9 79

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Appendix A- ERRATA Data Section 80

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

l~o ........................ .. .3*~gMt

  • F 2*pyn-eo .th.

" / 0NANA pCC Silsrgy Coololsoy to P0CC Oo.negy 0ompny 0Fe00

C*us.-llTosto methooloso yIIII. (0 5) Wte o 2 00CM 11.0 4 4 18e01
  • ols11oto reg~rlnlg SC lch~ 00hanged10 th 181riterion hor cotroling P Fe-O9 NI~ 0 ~ *~101

, ~ 00 0 8.

I 0.,roI.0b1.Cono8,1t1.tI00 opoestd 2Coo.~

to ths Msoi0100 (M1130) olo.. 10 tss'4 40.lo-oo0.

00C 110 Ighhg i 111l~ 0 en00te 1a hnot rsotop* l 1r.1.,.A o.

t 0 t5.hsI.o.st.,s018 20.t os91sss-C~Cool *..'. Ot. nt s 1*11.A60t0 (P. 6) no-6.1 to-.t o toFs to* .,  ;:or hhoto osllIe sltsl

......... . ... i -l.t ... . . . 'r...... o..t. , 0 .0..

....... .... .......... t .......

................... . ... . . t ..

7 O M ll 0p,00,0. ,.1

  • otl 10, thsl 0.1r so*th th 01818 r j00.010r10dA 0,*ooop 10 n -os o ,o.to r dd d o I. Os.. -. t o.

50In1^t .tnot p.5 .dde-- hit.0no s-.am Oh

  • ~~~~th. mu ...

bl ....... rsrt. -ee r 8  ;*CM T~e ILB 6 *1 * *-* *rto 10r10. 0151, 0057., *up~ooloon.,.1.o tiono 00011.ooote In On 113. 00104. 00125, '1035, Ap" A to to'.

17o8 4.18-'04209.109 0 ... 80 ....

001010 0 th'(OSCAy

, 1. .

0 00M III. 5 53.751 0P00°r18d 0y 00omp0t109 1131 *Conslstency

Fac~Pstors ol4.3.o0d7.0,.Ielltng u.Iog th. o1Iooot..anoosramet.,.o-oo at wtogoos .. .t101 thot to. re.eeodsspt. 1075 dlo o 10 C:OCMS !4.s.C.0.I 47 5 ...................
  • osiolslogod-erf 00t8 1s. 0081tA ta .0l.

o~Ot 0h1. sa00me.0 Fob-O*

the.00. nusteos -V.ie Ju tofe nintes ra s ettl*" O i 00010818 8o8 dO . - 0810 .p Sacttoohom tt 010 st.o...htttoso0018Os 0 iFormul., toh,Cgs~t~hI 088~~y t.08101808.

1 OCCMI...

. C 4 3..c

.00.0 .l.r.ly.ng..t

... .ooor,,.h.. re8o.... ex..m.n - (p. (p. 311;30). 800.0018llhllnglstetoONot.O2on to IV.C

  • 33034080r0*en

. *neloooolrl.oolo Jsflogt o. pS4sond tooote 3oo p *5 158 11.14 10005930M 14 00OCM VI.A CI NA R.00010908003,180180 No log1.8001. .0 15 Ta.01e ViiA-1i/igur 3 40 34 C°08 I 71K~I 0. 800.0. CODCMC T.01 4.5.0.,1 requireent for TLO

.VII.A. I *. Addltlo80y h.018o 01..l St.tloo*.1t110 C Geea . f h .r

,P--018 10 Fig-re VIIA. 1 :00000.0 10T'0001VII.A-l)119r 3e W01 5.00819d fr00 A to0- *MIlk P80 A IS I

., A00310081171w8Cr001 1 ViI.A43 1*

  • u0008160 1n P1901e V(IIA.2
  • 108 9888008 r80d1..1 00o AOdeO to Ho 3 VenlilatloO 01081m.k01 c 10 00CM * *40 10003018.- AOdeO 088800 I 3
  • *ndr~geer to long.M37, .oIt. . C,.8180 080 wLOC 01t0,80 88 10 00DCM 30 loIod.*m 0orre10.,k1105 to101 0onge4 ox00t 18181800810 1018 11agra.10 00 A. 0035930 01 8 0 0.. 0 it 00t g ,. 0 0 0 0 , 3 1 8 8 1 0 1 . - - - h o,810018801ea10811.18107 lA (p.3). Also 800e01r118r8n08s t1 101 i ......... ..........

i Reoroncosyste .00lt 80 00 8081007 0d01,ns,811o8r 10 88COCMS 18 00 3.5.0.4 81 0 0(0 (p 4)...........

00CMn 43..8.010). 800 OCMS 3.8.04. 0(0 i i i *00CM 30 0.-10).

.18.180 09p*, A. .. ..

81

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

'Old R f Item # ODCMS Section (Rev.12) i ~~~~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~.

(New)Rev.13 Description . ....... Change

. of ............. Rationale for change Date Change Was Made ODCMS IefIR#582009, Recent Issuance of procedure OP-AA-tO08-115,Operability Determinations,

'Rev.0, implements recent NRC guidance RIS

  • ODCM Definition of 2005-20 "OperabilityDeterminations and

.ODCMS 3.8.A ODCMOODCM 3.8 A-!Operable changed to Functionality Assessments for resolution of Feb-08 3.8.A-2 3 Functional throughout out degraded or nonconforming conditions adverse to

  • idocument .quality or safety, The intent is to reserve the

.usage of Operability for only Tech Spec related

.equipment while "functional" wiltbe used for TRM

.ODCMand UFSAR equipment ODCMI :Added reference to floor Accuracy - current reference to just the Feb-08

2 ODCM53.8.B.4.b .3.8.B-10 3.8..--12 drain demineralizer. floor drain filter is incomplete.

ýODCM ODCM Stack was changed to IR#359300, Indicate both stacks are 3 ODCMS 3.8.C-4 (Taot 3 8 4 3.8.C.4 Feb-08 stacks covered, NRC comments

ýODCM iODCM B 3.8-id 'AR# 265026, As per 10 CFR 72.13 no

.DCMS O4 3.10.2.d C D . will be removed Feb-08 13.10-2 11 ,longer a reporting requirement l

Surveillance requirementsý. q Per AR direction, added ODCMS dRequirements 4.8.B.3.7 thru 4.8.B.18 to Addednameforhe, Channel specify Instrument Checks, Instrument 53 ODCM 1 ODCM38 Chl unCheck, tannl Functional Tests, Source Checks, and Feb-08 5 AR 00359300 388-3.8. B-9 10, ODCM i38-1 Functional airto ihne Test and o Isrmn Calibration Instrument airto for o theh service evc 3.8. B-11 Channel Calibration for ieach monitor (p ODCM swater,emergency service water and high 3pressure service water effluent line

.8.B10 and 11). radiation monitors.

Source check requirements-Added same for Main Stack and 6 AR 00350300 N/A ODCMS Vent Stack effluent AR direction. Feb-08 38C- 13 monitors (ODCMS 4.8.C.4.10 and 4.8.C.4.11 both on p. ODCMS 3.8.C-.

13)

Uetinltlons- Reviewed same against NUREG-1302 and made suggested changes toi GASEOUS RADWASTE TREATMENT SYSTEM, ODCMS

.INSTRUMENT NA 3.8.A-1 thru Better consistancy with regulatory 7 'AR 00359300 N/A D. .CALIBRATION, Feb-08 38.ODcMS documents.

i~3.8.A-3 INSTRUMENT IFUNCTIONAL TEST,

'OFFSITE DOSE

CALCULATION MANUAL, and SOURCE CHECK definitions (P. ODCM I A, 1.tt r rll Rilr AA .,a Service mater, ESW, and M Per AR direction, added Functional ODCM38B- requirement to ODCMS 3.8.B.3 (p. ODCM Feb-08 8 AR 00359300 N/A 7-9 iHPSW monitors, Include 3.8.-7); item D under Compensatory t*nthe ODCMS Measures (p. ODOM 3.8.B-8 and 9).

82

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

'These changes are considered as

Administrative wording CMS 3.8..1DCM 38 upgrades Certain administrative upgrades and do not Required Added wording changes were ,adversely affect the quality of the ODCM

.9 Compensatory made to enhance clarity and enhance compliance to regulatory 938 B-11 Feb-08 Initiate requirements. These changes were to

  • measures AlA A.2.daa o regarding 0OCMS .typically add words such as 'initiate
  • A.3 required compensatory actions to' or delete redundant or measures unnecessa yr.ords ...................

ODCM 6DCM 3... .

9a ODCMS 4.8.B.1.2 . See Item#9 Feb-08 3.8.13-2 t2 iODCMS 3.8.B.4, 9b Required ODCM 00CM 3.8.1-

.3.8.B-12 :12 See Item#9 Feb-08 Compensatory Seeltem#9

measure A.1 iODCMS3.8.C.1, R ia ODCM 3.8.C1 ODCM 3.8.C-Required 3.8.C-1 1 I1 'See ltem#9 .See ltem#9 Feb-08 ODCMS 3.8.C.4, Sc Required ODCM 0ODCM3.8.C-Compensatory .See ltem#9 Feb-08

!3.8.C-10 11 See Item#9 measure B. 1 S9d 0O3CM .8.C.6, ODCM ODCM 3.8 C-See ItemitS See Item#9 Feb-08

.................... d. .Re 3.8.C-17 17 1 This ensures that the intent of the test The instrument calibration iof the radwaste effluents requirement is clear. A full 'instrument 0CM0DCMC4.B.338 flow monitor (ODCMS icalibration' is impractical to perform. An 10 OOM3.8..-84O88B.3.6) was changed electronic alignment provides reasonable i3.8.8-9 10 from a s changed assurance that appropriate flow is known. Feb-08 f n rAdditionally, flow is verified to be

calibration'to a appropriate by liquid radwaste tank level

'electronic alignment c i:Comparisons during effluent releases.

i..................

... i ...........................

i. Major Changes to Radioactive Waste Treatment

'Systems - This section is being deleted since thre are redundant requirements elsewhere that ensure that changes to radioective waste treatment systems en.

propertyevaluated and reported to the NRC as applicable. I0CFR 50.09delineates the requirements of what must be submitted to the NRC inthe routine t0CFR 50.59 repet. The details of the content of the i 0CFR 50.89 report is not required to exist in the 39-1, 3N/A iODCMSand results in unwarranted and additional if ODCMS 3.9 .Deletion of ODCMS 3.9 ;regulatory burden. tOCFR20 does not require this Feb-08 2

levelof regulatory requirements. The definition of

.'major changes' is superseded by revisions to the 1nCFR 50.59 process that have been extensively reviewed by NEI andthe NRC and codified in 10CFR

.50.59. The details of PORC and NSRe are governed

.by the OATR and applicWbleANSI standards.

fTherefore, the ODCMS 3.9 discussion or PORC and NSRB is duplicative andunwarranted regulatory burden.

83

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

'Deletion of the details of the RDARfrom ODCMS

'3.10.3 -The RDARwas relocated out of Tech specs at the time of ITS implementation. Inthis project, they were determined to not be of a safety significant nature that they were required Deletion of Radiological ,to be retained in the Tech Specs. This 12 12ODCMS 3.10.3 310CM 2 N/A Dose Assesssment information can be made available to NRC Feb-08 Report inspectors if required. Therefore, maintaining these ODCMS sections and details of reporting is judged to be unwarranted regulatory burden.

tAppropdate elements of these reports willbe performed in accordance with other regulatory i........

.................. . ... ... 'requirements and guidance, as appropriate.

Special reports not required elsewhere by regulations or other regulatory

!Removal of Special requirements were changed to ensure that Removaln toSeCil ithe occurrence was entered into the site R t ticorrective action program in lieu of NRC ODCMS 3.8.B.2, requirements Added 1"Initiate a Condition :Creporting. NRC special reports are i13 iRequired Report..ODCMS unwarranted regulatory burden that is not Feb-08 Compensatory Rev.12 states "Submdi required by 10CFR 20. The NRC resident measure A. 1 Sinspector and baseline reactor oversight Special R t programs are in place to ensure that the NRC' NRC is aware of appropriate issues. The NRC routine reviews and has access to

.the corrective action program.

ODCMS 3.8.8.3, Removal of Special 13a Required Reporting to NRC See Item #13 Feb-Oh 3.8.B-9 13.8.-9 Compensatory require ments ..........................

S............

)ODCMS3.8.8.4, Required Removal of Special 3Compensatory 3.B- 12 .3.8.B1-12 Reporting to NRC See Item #13 Feb-O8 requirements imeasure A.I ODCMS 3.8.C.2,

.Removal of Special 3c Required uie 13.8.C-5 3.8&c-5

.1c :Reporting to NRC See Item #13 Feb-O8 Compensatory 3 ioD* M measure A. 1 * * *:* :* :...... ..........................

requirements ODCIMS 3.8.C.3 :Removal of Special Feb-O8

  • 13d Required 3.8.C-7 3.8.C-7 .Reporting to NRC See Item #13

.Compensatory requirements ODCMS 3.8.C.4, Removal of Special Feb-08

.13e Required 3 .9 3.8.C-12 .Reporting to NRC See Item #13 Compensatory . .....(u [ .......

,requirements .....

'Removal of Special

.SeeItem #13 Feb-08 13f Required 3-8.14 3.8.C-15 Reporting to NRC

.Compensatory,,, requirements ODCMS 3.8 C.7 iRemoval of Special

See Item #13 Feb-08 13g Required 38C- 18 .3.8.C-18 Reporting to NRC c £* P~r~sat~ ry .................

Compensatory [....................................... ,requirements ODCMS 3.8.D. 1 .Removal of Special 13h Required 38D- 1 I3.8.D-1 See Item #13 Feb-08

.Reporting to NRC Compensatory .requirements ODCMS 3.8.E. 1, ,Removal of Special :See Item #13 Feb-08

13i Condition B and 38E- 1 E3.8.-2 :Reporting to NRC S................

.R eq u ired ......................... requirements ODCMS 3.8.E. 1, .Removal of Special See Item #13 Feb-08 13j Required :3.8.E.-3 .3.8.E-3 .Reporting to NRC

.Compensatory~ ~

i...................

. i*a ry.............. ................... .............................

requirements ODCMS 3.8E.1, S 'Removal of Special .See Item #13 See Item #13 Feb-08 13k Required 3.8. E-4 3.8.E-4 .Reporting to NRC iCompensatory .

=0D ........

c MS* 8*E .U --I... .......................... .. requirements 0DCM 3.8.E3, Feb-08

.131 Required 3.8. E- 15 3.8.E-15 .Reporting to NRC Compensatory ............ re quremen-ts ..................

84

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC Appendix B- Revised copy of the ODCM 85

Facility: Peach Bottom Units 2 & 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC (PageIntentionally Left Blank) 86

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