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{{#Wiki_filter::: Exelon Generation April 26, 2019 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001  
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:: Exelon Generation April 26, 2019 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001


==Subject:==
==Subject:==
Peach Bottom Atomic Power Station Units 1, 2 and 3 Independent Spent Fuel Storage Installation
Peach Bottom Atomic Power Station Units 1, 2 and 3 Independent Spent Fuel Storage Installation {ISFSI)
{ISFSI) Facility Operation License DPR-12, DPR-44 and DPR-56 NRC Docket 50-171, 50-277 and 50-278 and ISFSI Docket 72-29 Annual Radioactive Effluent Release Report 61 January 1, 2018 through December 31, 2018 Enclosed is the Annual Radioactive Effluent Release Report 61, January 1, 2018 through December 31, 2018 for Peach Bottom Atomic Power Station, Units 1, 2 and 3. This report is being submitted in compliance with 10 CFR 50.36a(2) and the Technical Specifications of Operating Licenses DPR-44 and DPR-56 and to fulfill the requirements of Offsite Dose Calculation Manual Specifications (ODCMS) 3.10.2. Additionally, this report is submitted to satisfy the annual effluent reporting requirements for the ISFSI required by the ODCM. The ODCM was not revised during the 2018 reporting period. There are no commitments contained in this fetter. If you have any questions or require additional information, please do not hesitate to contact Dr. Amber Donley at 717-456-3056.
Facility Operation License DPR-12, DPR-44 and DPR-56 NRC Docket 50-171, 50-277 and 50-278 and ISFSI Docket 72-29 Annual Radioactive Effluent Release Report 61 January 1, 2018 through December 31, 2018 Enclosed is the Annual Radioactive Effluent Release Report 61, January 1, 2018 through December 31, 2018 for Peach Bottom Atomic Power Station, Units 1, 2 and 3.
Sincerely, Matthew J. Herr, Plant Manager Peach Bottom Atomic Power Station MJH/SMO/GRS/BMR/ASD/asd Enclosure
This report is being submitted in compliance with 10 CFR 50.36a(2) and the Technical Specifications of Operating Licenses DPR-44 and DPR-56 and to fulfill the requirements of Offsite Dose Calculation Manual Specifications (ODCMS) 3.10.2. Additionally, this report is submitted to satisfy the annual effluent reporting requirements for the ISFSI required by the ODCM.
{1) cc: USN RC Region I, Regional Administrator
The ODCM was not revised during the 2018 reporting period. There are no commitments contained in this fetter.
{Daniel H. Dorman) USN RC Senior Resident Inspector, PBAPS (Justin Heinly) USN RC Region I Inspector (James R. Cassata) CCN 19-47 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   
If you have any questions or require additional information, please do not hesitate to contact Dr. Amber Donley at 717-456-3056.
Sincerely, Matthew J. Herr, Plant Manager Peach Bottom Atomic Power Station MJH/SMO/GRS/BMR/ASD/asd Enclosure {1) cc:     USN RC Region I, Regional Administrator {Daniel H. Dorman)
USN RC Senior Resident Inspector, PBAPS (Justin Heinly)
USN RC Region I Inspector (James R. Cassata)
CCN 19-47


RADIOACTIVE EFFLUENT RELEASE REPORT NO. 6 1 JANUARY 1, 2018 THROUGH DECEMBER 31, 2018
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. 61 JANUARY 1, 2018 THROUGH DECEMBER 31, 2018 Submitted to The United States Nuclear Regulatory Commission Pursuant to Facility Operating Licenses DPR-44 and DPR-56


Submitted to The United States Nuclear Regulatory Commission Pursuant to Facility Operating Licenses DPR-44 and DPR-56 Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC 2    
Peach Bottom Atomic Power Station               Licensee:       Exelon Generation Company, LLC Unit 2 and 3                                                                  PSEG Nuclear, LLC (This page intentionally left blank) 2


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Peach Bottom Atomic Power Station                                       licensee:               Exelon Generation Company, LLC Unit 2 and 3                                                                                                            PSEG Nuclear, LLC TABLE OF CONTENTS INTRODUCTION ......................................................................................................................................4 ATIACHMENT 1: SUPPLEMENTAL INFORMATION ................................................................................. 6 Regulatory limits .......................................*.....*......**.....*.....................................*......****.......*.. 7 Maximum Permissible Concentrations ...............*..........*.......**............*............................*....... 7 Average Energy ......................................................................................................................... 8 Measures and Approximations of Total Radioactivity .............................................................. 8 Batch Releases ........................................................................................................................ 10 Average Stream Flow .............................................................................................................. 10 Abnormal or Unplanned Releases .......................................................................................... 11 liquid Releases ....................................................................................................................... 11 Gaseous Releases ................................................................................................................... 12 Changes to the ODCM ............................................................................................................ 12 Minimum Detectable Concentrations ................**.....**.......*............................................*...... 12 Violations ................................................................................................................................ 12 Dose Assessment .................................................................................................................... 13 Introduction ............................................................................................................................ 13 Liquid Dose Assessment ......................................................................................................... 13 Gaseous Dose Assessment ............*.......*............*......*...*............................*....*.....***.......*...... 14 ATIACHMENT 2: EFFLUENT  
Peach Bottom Atomic Power Station Unit 2 and 3 licensee:
TABLE OF CONTENTS Exelon Generation Company, LLC PSEG Nuclear, LLC INTRODUCTION  
......................................................................................................................................
4 ATIACHMENT 1: SUPPLEMENTAL INFORMATION  
.................................................................................
6 Regulatory limits .......................................*.....*......**.....*.....................................*......****.......*..
7 Maximum Permissible Concentrations  
...............*..........*.......**............*............................*.......
7 Average Energy .........................................................................................................................
8 Measures and Approximations of Total Radioactivity  
..............................................................
8 Batch Releases ........................................................................................................................
10 Average Stream Flow ..............................................................................................................
10 Abnormal or Unplanned Releases ..........................................................................................
11 liquid Releases .......................................................................................................................
11 Gaseous Releases ...................................................................................................................
12 Changes to the ODCM ............................................................................................................
12 Minimum Detectable Concentrations  
................**.....**.......*............................................*......
12 Violations  
................................................................................................................................
12 Dose Assessment  
....................................................................................................................
13 Introduction  
............................................................................................................................
13 Liquid Dose Assessment  
.........................................................................................................
13 Gaseous Dose Assessment  
............*.......*............*......*...*............................*....*.....***.......*......
14 ATIACHMENT 2: EFFLUENT  


==SUMMARY==
==SUMMARY==
  ...............................................................................................
  ............................................................................................... 16 Gaseous Effluents-Summation of All Releases ...................................................................... 17 Gaseous Effluents Release Point: Elevated (Main Offgas Stack) ............................................. 18 Gaseous Effluents Release Point: Ground-Level (Units 2 and 3 Reactor Building Exhaust Vents and Abnormal Releases) ............................................................................................... 19 Liquid Effluents - Summation of All Releases .......................................................................... 20 liquid Effluents Release Points - Liquid Radwaste, RHR Leaks and Groundwater ................. 21 ATIACHMENT 3: SOLID WASTE AND IRRADIATED FUEL SHIPMENTS .................................................. 22 Solid Waste Shipped ............................................................................................................... 23 Irradiated Fuel Shipments ....................................................................................................... 24 Changes to Process Control Program (PCP) ............................................................................ 24 ATTACHMENT 4: RADIOLOGICAL IMPACT ON MAN ............................................................................ 25 Radiological Impact on Man ................................................................................................... 26 40 CFR 190 Doses.................................................................................................................... 26 ATIACHMENT 5: METEOROLOGICAL DATA ......................................................................................... 27 Technical Concurrence (for accuracy of information):
16 Gaseous Effluents-Summation of All Releases ......................................................................
Manager, Site Chemistry and Radwaste 3
17 Gaseous Effluents Release Point: Elevated (Main Off gas Stack) .............................................
 
18 Gaseous Effluents Release Point: Ground-Level (Units 2 and 3 Reactor Building Exhaust Vents and Abnormal Releases)  
Peach Bottom Atomic Power Station                   Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                                      PSEG Nuclear, LLC INTRODUCTION In accordance with the Reporting Requirements of Technical Specification 5.6.3 applicable during the reporting period, January 1, 2018 through December 31, 2018, this report summarizes the Effluent Release Data for Peach Bottom Atomic Power Station (PBAPS) Units 2 and 3. The notations E+ and E- are used to denote positive and negative exponents to the base 10, respectively.
...............................................................................................
19 Liquid Effluents  
-Summation of All Releases ..........................................................................
20 liquid Effluents Release Points -Liquid Radwaste, RHR Leaks and Groundwater  
.................
21 ATIACHMENT 3: SOLID WASTE AND IRRADIATED FUEL SHIPMENTS  
..................................................
22 Solid Waste Shipped ...............................................................................................................
23 Irradiated Fuel Shipments  
.......................................................................................................
24 Changes to Process Control Program (PCP) ............................................................................
24 ATTACHMENT 4: RADIOLOGICAL IMPACT ON MAN ............................................................................
25 Radiological Impact on Man ...................................................................................................
26 40 CFR 190 Doses ....................................................................................................................
26 ATIACHMENT 5: METEOROLOGICAL DATA .........................................................................................
27 Technical Concurrence (for accuracy of information):
Manager, Site Chemistry and Radwaste 3 Peach Bottom Atomic Power Station Unit 2 and 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, January 1, 2018 through December 31, 2018, this report summarizes the Effluent Release Data for Peach Bottom Atomic Power Station (PBAPS) Units 2 and 3. 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 (ODCMS) limits.
The release of radioactive materials during the reporting period was within the Offsite Dose Calculation Manual Specification (ODCMS) limits.
There were three (3) abnormal releases of liquid radioactive material. Two releases were from two different Residual Heat Removal (RHR) heat exchangers (beginning July of 2016 and November 2018) and the other is from groundwater tritium contamination ('tritium plume').
These releases were far below regulatory limits.
There were no abnormal releases of gaseous radioactive material during 2018.
The maximum calculated organ dose (bone) from iodines (I-131, I-133 and I-135), tritium (H-3),
carbon-14 (C-14) and particulates to any individual due to all gaseous effluents was 1.38E-01 mrem, which was approximately 4.60E-01% of the annual limit. The maximum calculated air dose in the unrestricted area due to noble gas effluents was 3.02E-01 mrad (gamma) and 2.07E-01 mrad (beta), which was 1.51E+00% and 5.18E-01%, respectively, of the annual limits.
In 2018, there were no direct gaseous or liquid releases or discharges from Unit 1 to the environment. Additionally, there were no gaseous or liquid radioactive releases from the Independent Spent Fuel Storage Installation, NRC Docket No. 72-29 (ISFSI).
No changes made to RW-AA-100 "Process Control Program for Radioactive Waste" or to the ODCM nor the Appendix A during the 2018 reporting period.
4


There were three (3) abnormal releases of liquid radioactive material. Two release s were from two different Residual Heat Removal (RHR) heat exchanger s (beginning July of 20 1 6 and November 2018) and the other is from groundwater tritium contamination ('tritium plume'). These releases were far below regulatory limits.
Peach Bottom Atomic Power Station                  Licensee:      Exelon Generation Company, LLC Unit 2 and 3                                                                      PSEG Nuclear, LLC Exelon Nuclear common procedures, which provide consistent expectations and standards for Radioactive Effluents Controls Program (RECP), were used to generate this report. PBAPS site specific procedures used to assist with abnormal/unplanned releases were also 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-170-300, 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 CY-AA-170-2300, Determination of Carbon-14 in Gaseous Effluents CY-PB-170-202, RHR-HPSW Leak Rate Calculation CY-PB-170-2020, Radiological Abnormal Gaseous Release Assessment CY-PB-170-210, Gaseous Dose and Dose Rate Calculation CY-PB-170-2300, OpenEMS Effluent Management System Implementation Peach Bottom Atomic Power Station, Offsite Dose Calculation Manual and Specifications (Appendix A) 5


There were no abnormal release s of gaseous radioactive material during 2018.
Peach Bottom Atomic Power Station      Licensee: Exelon Generation Company, LLC Unit 2 and 3                                                   PSEG Nuclear, LLC ATTACHMENT 1: SUPPLEMENTAL INFORMATION 6
The maximum calculated organ dose (bone) from iodines (I
-131, I-133 and I-135), tritium (H
-3), carbon-14 (C-14) and particulates to any individual due to all gaseous effluents was 1.38 E-01 mrem, which was approximately 4.60 E-0 1% of the annual limit. The maximum calculated air dose in the unrestricted area due to noble gas effluents was 3.02 E-01 mrad (gamma) and 2.07 E-01 mrad (beta), which was 1.
5 1E+00% and 5.18 E-01%, respectively, of the annual limits.


In 2018, there were no direct gaseous or liquid releases or discharges from Unit 1 to the environment. Additionally, there were no gaseous or liquid radioactive releases from the Independent Spent Fuel Storage Installation, NRC Docket No. 72
Peach Bottom Atomic Power Station                              Licensee:          Exelon Generation Company, LLC Unit 2 and 3                                                                                    PSEG Nuclear, LLC Regulatory Limits Table 1. Noble Gas Dose Rate and Dose Limits Maximum Value            Units                  Limit Classification                      Specification 500            mrem/ yr            annual total body dose rate                ODCM Specification 3.8.C.1.a 3000            mrem/ yr                annual skin dose rate                  ODCM Specification 3.8.C.1.a 10              mrad        gamma radiation air dose per quarter            ODCM Specification 3.8.C.2.a 20              mrad        beta radiation in air dose per quarter          ODCM Specification 3.8.C.2.b 20              mrad        gamma radiation in air dose per year            ODCM Specification 3.8.C.2.c 40              mrad          beta radiation in air dose per year          ODCM Specification 3.8.C.2.d Table 2. Iodines, Tritium and Particulates (with half-lives >8 days) Dose Rate and Dose Limits Maximum Value          Units                    Limit Classification                        Specification 1500            mrem/ yr          annual dose rate limit to any organ            ODCM Specification 3.8.C.1.b 15              mrem        annual dose limit to any organ per quarter          ODCM Specification 3.8.C.3.a 30              mrem              dose limit to any organ per year              ODCM Specification 3.8.C.3.b Table 3. Liquid Effluent Activity Concentration and Dose Rate Limits Maximum Value            Units                    Limit Classification                      Specification 10 times 10 CFR 20, Appendix B, Table 2,      µCi/mL        Activity Concentration in all liquid releases   ODCM Specification 3.8.B.1.a Column 2 total activity concentration for all dissolved and 2E-04            µCi/mL                                                        ODCM Specification 3.8.B.1.b entrained noble gases 3.0            mrem              total body dose limit per quarter          ODCM Specification 3.8.B.2.a 10              mrem                total body dose limit per year            ODCM Specification 3.8.B.2.a 6.0            mrem              dose limit per quarter to any organ          ODCM Specification 3.8.B.2.b 20              mrem                dose limit per year to any organ          ODCM Specification 3.8.B.2.b Maximum Permissible Concentrations Gaseous dose rates, rather than effluent concentrations, are used to calculate permissible release rates for gaseous releases. The maximum permissible dose rates for gaseous releases are defined in ODCMS 3.8.C.1.a and 3.8.C.1.b.
-29 (ISFSI).
The Effluent Concentrations Limits (ECL) specified in 10 CFR 20, Appendix B, Table 2, Column 2 multiplied by 10, for identified nuclides, are used to calculate permissible release rates and concentrations for liquid release per ODCMS 3.8.B.1.
The total activity concentration for all dissolved or entrained noble gases is limited to < 2E-04
&#xb5;Ci/mL (ODCMS 3.8.B.1.b).
7


No changes made to RW-AA-100 "Process Control Program for Radioactive Waste" or to th e ODCM nor the Appendix A during the 2018 reporting period.
Peach Bottom Atomic Power Station                     Licensee:       Exelon Generation Company, LLC Unit 2 and 3                                                                          PSEG Nuclear, LLC Average Energy The PBAPS 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, Revision 1, "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 PBAPS.
 
Measures and Approximations of Total Radioactivity Fission and Activation Gases The method used for gamma isotopic analysis is the Canberra GenieTM 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 were analyzed to report noble gas effluent activities. When no activity was identified in the grab isotopic analysis (un-id(s) or un-id(v)), the entire release must be assumed to be the radionuclide with the most-limiting dose factors for the release pathway (i.e. krypton-88 (Kr-88) for all ground-level releases, Kr-88 for elevated gamma dose and Kr-87 for elevated beta dose; see ODCM IV.B and NUREG-01331). 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.
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC 5  Exelon Nuclear common procedures, which provide consistent expectations and standards for Radioactive Effluents Controls Program (RECP), were used to generate this report. PBAPS site specific procedures used to assist with abnormal/unplanned releases were also used to generate this report.
Iodines The method used is the Canberra GenieTM System with a charcoal cartridge. Iodine activity was continuously sampled and analyzed in accordance with ODCMS Table 4.8.C.1.
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-170-300, 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 Calculati on Manual Revisions  CY-AA-170-2300, Determination of Carbon-14 in Gaseous Effluents CY-PB-170-202, RHR-HPSW Leak Rate Calculation CY-PB-170-2020, Radiological Abnormal Gaseous Release Assessment CY-PB-170-210, Gaseous Dose and Dose Rate Calculation CY-PB-1 70-2300, OpenEMS Effluent Management System Implementation Peach Bottom Atomic Power Station, Offsite Dose Calculation Manual and Specifications (Appendix A)
Particulates The method used is the Canberra GenieTM System with a particulate filter (47 mm diameter).
 
Particulate activity was continuously sampled and analyzed in accordance with ODCM Table 4.8.C.1.
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  6   
Composite particulate air samples were submitted to an offsite vendor laboratory for analyses of strontium-89 (Sr-89), Sr-90, nickel-63 (Ni-63) and gross alpha.
 
1 NUREG 0133, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants: A Guidance Manual for Users of Standard Technical Specifications," October 1978.
ATTACHMENT 1:
8
SUPPLEMENTAL INFORMATION
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  7  Regulatory Limits Table 1. Noble Gas Dose Rate and Dose Limits Maximum Value Units Limit Classification Specification 500 mrem/ yr annual total body dose rate ODCM Specification 3.8.C.1.a 3000 mrem/ yr annual skin dose rate ODCM Specification 3.8.C.1.a 10 mrad gamma radiation air dose per quarter ODCM Specification 3.8.C.2.a 20 mrad beta radiation in air dose per quarter ODCM Specification 3.8.C.2.b 20 mrad gamma radiation in air dose per year ODCM Specification 3.8.C.2.c 40 mrad beta radiation in air dose per year ODCM Specification 3.8.C.2.d Table 2. Iodines, Tritium and Particulates (with half
-lives >8 days) Dose Rate and Dose Limits Maximum Value Units Limit Classification Specification 1500 mrem/ yr annual dose rate limit to any organ ODCM Specification 3.8.C.1.b 15 mrem annual dose limit to any organ per quarter ODCM Specification 3.8.C.3.a 30 mrem dose limit to any organ per year ODCM Specification 3.8.C.3.b Table 3. Liquid Effluent Activity Concentration and Dose Rate Limits Maximum Value Units Limit Classification Specification 10 times 10 CFR 20, Appendix B, Table 2, Column 2 &#xb5;Ci/mL Activity Concentration in all liquid releases ODCM Specification 3.8.B.1.a 2E-04 &#xb5;Ci/mL total activity concentration for all dissolved and entrained noble gases ODCM Specification 3.8.B.1.b 3.0 mrem total body dose limit per quarter ODCM Specification 3.8.B.2.a 10 mrem total body dose limit per year ODCM Specification 3.8.B.2.a 6.0 mrem dose limit per quarter to any organ ODCM Specification 3.8.B.2.b 20 mrem dose limit per year to any organ ODCM Specification 3.8.B.2.b  Maximum Permissible Concentrations Gaseous dose rates, rather than effluent concentrations, are used to calculate permissible release rates for gaseous releases. The maximum permissible dose rates for gaseous releases are defined in 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 multiplied by 10, for identified nuclides, are used to calcula te permissible release rates and concentrations for liquid release per ODCMS 3.8.B.1.
The total activity concentration for all dissolved or entrained noble gases is limited to < 2E-04 &#xb5;Ci/mL (ODCMS 3.8.B.1.b).


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC 8  Average Energy The PBAPS ODCM limits the do se-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, Revision 1, "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 PBAPS. Measures and Approximations of Total Radioactivity Fission and Activation Gases The method used for gamma isotopic analysis is the Canberra Genie TM 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.
Peach Bottom Atomic Power Station                   Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                                      PSEG Nuclear, LLC Carbon-14 The amount of C-14 released was estimated using the guidance from the Electric Power Research Institute (EPRI) Technical Report 1021106, "Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents". The C-14 was released primarily through the Main Offgas Stack (9.70E+01%)
The data from the noble gas radiation monitor were analyzed to report noble gas effluent activities.
with a small amount (3.00E+00%) through the Reactor Building Exhaust Vents. The C-14 in liquid effluents is not a significant dose pathway, as determined from studies. The resulting annual dose to the maximum conservative receptor is 1.38E-01 mrem, with the limiting receptor as the child bone.
When no activity was identified in the grab isotopic analysis (un-id(s) or un
Liquid Effluents Gamma isotopic activity concentrations are determined on each batch of liquid effluent prior to release using the Canberra GenieTM 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.
-id(v)), the entire release must be assumed to be the radionuclide with the most-limiting dose factors for the release pathway (i.e. krypton-88 (Kr-88) for all ground-level releases, Kr-88 for elevated gamma dose and Kr-87 for elevated beta dose; see ODCM IV.B and NUREG-0133 1). 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. Iodines The method used is the Canberra GenieTM System with a charcoal cartridge.
Composite liquid radwaste samples are analyzed for tritium on-site and submitted to an offsite vendor laboratory for analyses of iron-55 (Fe-55), phosphorus-32 (P-32), Sr-89, Sr-90, Ni-63, and gross alpha.
Iodine activity was continuousl y sampled and analyzed in accordance with ODCMS Table 4.8.C.1. Particulates The method used is the Canberra GenieTM System with a particulate filter (47 mm diameter).
Decommissioned Unit 1 Liquid Radioactive Waste Processing There were no direct gaseous or liquid releases or discharges from Unit 1 to the environment during 2018. However, during the reporting period, a total of 333 gallons of water with low concentrations of H-3 were collected from Unit 1 and stored at Unit 2 and 3, for processing in a future year. No gamma emitting nuclides were identified above detectable limits. During the reporting period, there were no releases of Unit 1 water through the Unit 2 and Unit 3 liquid radwaste system. Therefore, there is no estimated liquid effluent doses for 2018 from Unit 1 water releases through the Unit 2 and Unit 3 liquid radwaste system.
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 strontium-89 (Sr-89), Sr-90, nickel-63 (Ni-63) and gross alpha.  
Estimate of 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, which are listed in  of this report.
9


1 NUREG 0133, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants: A Guidance Manual for Users of Standard Technical Specifications," October 1978.
Peach Bottom Atomic Power Station                            Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                                                  PSEG Nuclear, LLC Batch Releases Table 4. Quarterly Liquid Batch Release Statistics First Quarter          Second Quarter        Third Quarter          Fourth Quarter Number of Batch 18*                      2                  4                      8 Releases Total Time for Batch 2.31E+03                1.150E+02          3.930E+02              4.730E+02 Releases (minutes)
Maximum time period for batch release        1.78E+02                8.000E+01          1.350E+02              1.000E+02 (minutes)
Average time period for batch release        1.28E+02                5.750E+01          9.825E+01              5.913E+01 (minutes)
Minimum time period for batch release        3.70E+01                3.500E+01          5.000E+01              3.700E+01 (minutes)
Average Stream Flow 3    2,3        1.95E+05                1.74E+05            2.38E+05                2.65E+05 (ft / s)
Dilution volume 9.49E+09                5.22E+08            1.79E+09                2.15E+09 (liters)
*Number of releases increased from 2017 due to work on the torus dewatering tank Table 5. Quarterly Gaseous Batch Release Statistics First Quarter          Second Quarter        Third Quarter          Fourth Quarter Number of batch 0                        0                  0                      0 releases:
Total Time for batch 0                        0                  0                      0 releases (minutes)
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)
Average Stream Flow The river flow is not used for dose calculations. The actual flow rate of Circulation Water (the water that is circulated within the plant for cooling) is determined for each liquid effluent release because this Circulation Water provides dilution and therefore reduces the projected dose.
2 Average Stream Flow is not used for dose calculation.
3 USGS National Water Information System, Site Name: "Susquehanna River at Marietta, PA", Site Number:
01576000. Data accessed 13 March 2019.
10


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  9  Carbon-14 The amount of C-14 released was estimated using the guidance from the Electric Power Research Institute (EPRI) Technical Report 1021106, "Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents".
Peach Bottom Atomic Power Station                             Licensee:         Exelon Generation Company, LLC Unit 2 and 3                                                                                     PSEG Nuclear, LLC Abnormal or Unplanned Releases
The C-14 was released primarily through the Main Offgas Stack (9.70E+01%)
'Abnormal' releases are those releases that are not defined as 'normal' releases in the Licensee's ODCM. Systems with a potential for an unplanned release are monitored to ensure if a release were to occur it would be identified and quantified appropriately. Source terms used for dose calculations utilize direct sampling and the maximum concentrations of nuclides to ensure that the most conservative and bounding estimates are used. Methodologies calculate conservative dose utilizing conservative mathematical models to describe intake and exposure pathways. Therefore, reported doses for these abnormal releases are calculated conservatively.
with a small amount (3.00E+00%)
Liquid Releases Groundwater Tritium Plume During 2018, 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 flow into the plant intake and eventually flow into the normal discharge canal. Details of this program can be found in the Peach Bottom Annual Radiological Environmental Operating Report (AREOR) as an appendix. No other nuclides were detected in monitoring wells.
through the Reactor Building Exhaust Vents. The C
Analysis of Release It was assumed from the maximum flow rates measured4 that ground water flowed to the discharge canal at a steady rate of 3.44E+02 gpm, carrying with it some of the tritium underneath the plant. The ground water flow rate was updated in April 2017, when the new report was provided4. The conservative maximum dose for the entire year from this continuous release is calculated to be 2.94E-05 mrem (to the whole-body) and 2.94E-05 mrem (to any organ, except bone5 which is 0.00E+00 mrem)6. This dose contribution projection is well below the limit specified in the ODCM.
-14 in liquid effluents is not a significant dose pathway, as determined from studies. The resulting annual dose to the maximum conservative receptor is 1.38 E-01 mrem, with the limiting receptor as the child bone. Liquid Effluents Gamma isotopic activity concentrations are determined on each batch of liquid effluent prior to release using the Canberra Genie TM 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.
Heat Exchanger Leakage In July of 2016, a small leak developed in the Unit 3 'C' Residual Heat Removal (RHR) Heat Exchanger and on November 13, 2018 a small leak developed in the Unit 2 'B' RHR. The RHR system is designed to circulate water to remove heat from the reactor unit when necessary.
Composite liquid radwaste samples are analyzed for tritium on-site and submitted to an offsite vendor laboratory for analyses of iron-55 (Fe-55), phosphorus
The dose model assumes that contaminated torus water leaks from the heat exchanger, regardless of operating pressure to ensure conservatism in calculated dose. As an additional precaution, installed radiation monitoring instrumentation can indicate an inadvertent release of radioactive material should the heat exchanger develop a large leak unexpectedly.
-32 (P-32), Sr-89, Sr-90, Ni-63, and gross alpha. Decommissioned Unit 1 Liquid Radioactive Waste Processing There were no direct gaseous or liquid releases or discharges from Unit 1 to the environment during 2018. However, during the reporting period, a total of 333 gallons of water with low concentrations of H-3 were collected from Unit 1 and stored at Unit 2 and 3, for processing in a future year. No gamma emitting nuclides were identified above detectable limits.
4 "Estimated Mass Flux Of Tritiated Groundwater To The Conowingo Reservoir And Rock Run Creek, Peach Bottom Atomic Power Station, Delta, Pennsylvania", August 2017, GHD formerly Conestoga-Rovers & Associates.
During the reporting period, there were no releases of Unit 1 water through the Unit 2 and Unit 3 liquid radwaste system. Therefore, there is no estimated liquid effluent doses for 2018 from Unit 1 water releases through the Unit 2 and Unit 3 liquid radwaste system.
Estimate of 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, which are listed in Attachment 2 of this report
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC 10  Batch Releases Table 4. Quarterly Liquid Batch Release Statistics First Quarter Second Quarter Third Quarter Fourth Quarter Number of Batch Releases 18* 2 4 8 Total Time for Batch Releases (minutes) 2.31E+03 1.150E+02 3.930E+02 4.730E+02 Maximum time period for batch release (minutes) 1.78E+02 8.000E+01 1.350E+02 1.000E+02 Average time period for batch release (minutes) 1.28E+02 5.750E+01 9.825E+01 5.913E+01 Minimum time period for batch release (minutes) 3.70E+01 3.500E+01 5.000E+01 3.700E+01 Average Stream Flow (ft 3/ s)2 , 3 1.95E+05 1.74E+05 2.38E+0 5 2.65E+0 5 Dilution volume  (liters) 9.49E+09 5.22E+08 1.7 9E+09 2.1 5E+09 *Number of releases increased from 2017 due to work on the torus dewatering tank Table 5. Quarterly Gaseous Batch Release Statistics First Quarter Second Quarter Third Quart er Fourth Quarter Number of batch releases: 0 0 0 0 Total Time for batch releases (minutes) 0 0 0 0 Maximum time period for batch release (minutes) 0 0 0 0 Average time period for batch release (minutes) 0 0 0 0 Minimum time period for batch release (minutes) 0 0 0 0  Average Stream Flow The river flow is not used for dose calculations.
The actual flow rate of Circulation Water (the water that is circulated within the plant for cooling) is determined for each liquid effluent release because this Circulation Water provides dilution and therefore reduces the projected dose. 2 Average Stream Flow is not used for dose calculation.
3 USGS National Water Information System, Site Name: "Susquehanna River at Marietta, PA", Site Number: 01576000. Data accessed 13 March 201 9.
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  11  Abnormal or Unplanned Releases 'Abnormal' releases are those releases that are not defined as 'normal' releases in the Licensee's ODCM. Systems with a potential for an unplanned release are monitored to ensure if a release were to occur it would be identified and quantified appropriately.
Source terms used for dose calculations utilize direct sampling and the maximum concentrations of nuclides to ensure that the most conservative and bounding estimates are used. Methodologies calculate conservative dose utilizing conservative mathematical models to describe intake and exposure pathways. Therefore, reported doses for these abnormal releases are calculated conservatively.
Liquid Releases Groundwater Tritium Plume During 2018 , 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 flow into the plant intake and eventually flow into the normal discharge canal. Details of this program can be found in the Peach Bottom Annual Radiological Environmental Operating Report (AREOR) as an appendix. No other nuclides were detected in monitoring wells. Analysis of Release It was assumed from the maximum flow rates measured 4 that ground water flowed to the discharge canal at a steady rate of 3.44E+02 gpm, carrying with it some of the tritium underneath the plant. The ground water flow rate was updated in April 2017, when the new report was provided
: 4. The conservative maximum dose for the entire year from this continuous release is calculated to b e 2.94 E-05 mrem (to the whole-body) and 2.94 E-05 mrem (to any organ, except bone 5 which is 0.00E+00 mrem)6. This dose contribution projection is well below the limit specified in the ODCM. Heat Exchanger Leakage In July of 201 6 , a small leak developed in the Unit 3 'C' Residual Heat Removal (RHR) Heat Exchanger and on November 13, 2018 a small leak developed in the Unit 2 'B' RHR. The RHR system is designed to circulate water to remove heat from the reactor unit when necessary.
The dose model assumes that contaminated to r us water leaks from the heat exchanger, regardless of operating pressure to ensure conservatism in calculated dose. As an additional precaution, installed radiation monitoring instrumentation can indicate an inadvertent release of radioactive material should the heat exchanger develop a large leak unexpectedly.
4 "Estimated Mass Flux Of Tritiated Groundwater To The Conowingo Reservoir And Rock Run Creek, Peach Bottom Atomic Power Station, Delta, Pennsylvania", August 201 7 , GHD formerly Conestoga-Rovers & Associates.
5 Tritium dose factor for bone is 0.00E+00; therefore no hypothetical dose is calculated.
5 Tritium dose factor for bone is 0.00E+00; therefore no hypothetical dose is calculated.
6 These doses are identical because the dose factors are identical for the same nuclide and pathway.
6 These doses are identical because the dose factors are identical for the same nuclide and pathway.
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  12  Analysis of Release It was assumed that the torus water released to the discharge canal , during 2018 , contributed a conservative maximum dose of 5.42 E-0 5 mrem to the total body (receptor adult), and a conservative maximum organ dose of 1.54 E-04 mrem to the adult GI-LLI. This dose contribution i s well below the limits specified in the ODCM. Samples were analyzed for all the parameters of radioactive effluent releases.
11
Composite liquid torus water samples were counted for tritium and submitted to an offsite vendor laboratory for analyses of Fe-55, P-32, Sr-89, Sr-90, Ni-63 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. Gaseous Releases There were no gaseous abnormal releases during 2018. Changes to the ODCM There were no changes made to the ODCM, nor the ODCM Specifications (Appendix A) during 2018. Minimum Detectable Concentrations If a radionuclide was not detected, "<LLD" was reported as the activity. Samples were analyzed with techniques that achieved the required Lower Limits of Detection (LLD) specified in ODCMS Table 4.8.B.1, "Radioactive Liquid Waste Sampling and Analysis" (for liquids) or ODCMS Table 4.8.C.1, "Radioactive Gaseous Wast e Sampling and Analysis from Main Stack and Vent Stack" (for gases). In all cases, the LLD requirements were satisfied.
Violations There were no effluent release violations for the 2018 reporting period. 


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC 13  Dose Assessment Introduction A dose assessme nt for PBAPS was conducted with the measured cumulative 2018 radioactive effluent source terms, provided in Attachment 2, "Effluent Summary," and the 2018 meteorological (MET) data. This dose assessment verifies that PBAPS continues to demonstrate complian ce with the limits as well as the requirement of maintaining the doses "as low as is reasonably achievable" as stated in 10 CFR 50, Appendix I.7 Liquid Dose Assessment Hydrologic Conditions and Receptor Locations of Interest PBAPS is located on the Conowingo Pond formed in the Susquehanna River by the Conowingo Dam. For 2018 , the annual average river flow 8 was measured as 8.72E+0 5 ft 3/s. Of the three separate flow regimes that were used in the original Appendix I submittal, the most-limiting of them (<1.50E+04 ft 3/s) was used to calculate a dose assessment for this report because this would provide a bounding extreme for all PBAPS liquid effluents.
Peach Bottom Atomic Power Station                     Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                                      PSEG Nuclear, LLC Analysis of Release It was assumed that the torus water released to the discharge canal, during 2018, contributed a conservative maximum dose of 5.42E-05 mrem to the total body (receptor adult), and a conservative maximum organ dose of 1.54E-04 mrem to the adult GI-LLI. This dose contribution is well below the limits specified in the ODCM.
Therefore, although the actual average stream flow for the year was more than double the limiting case, this report will provide an upper limit for the most-limiting dose. The annual average dilution factor 9 at the Conowingo Intake is 5.40E+00 and the assumption for the reconcentration factor 9 is 1.16E+00. The PBAPS shorewidth factor 1 0 of 2.00E-01 was also used. No invertebrate intake was examined because invertebrate ingestion pathways are not considered to be significant in the area close to PBAPS. The pathway factors for the various age groups, used to determine dose to the public from liquid effluents are shown in Table 6.
Samples were analyzed for all the parameters of radioactive effluent releases. Composite liquid torus water samples were counted for tritium and submitted to an offsite vendor laboratory for analyses of Fe-55, P-32, Sr-89, Sr-90, Ni-63 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.
Table 6. Consumption and Usage Rate Assumptions Pathway Adult Teenager Child Infant Units Eating Fish 1 0 2.10E+01 1.60E+01 6.90E+00 0.00E+00 kg/ yr Drinking Water 1 1 7.30E+02 5.10E+02 5.10E+02 5.10E+02 L/ yr Swimming 1 2 2.80E+02 2.80E+02 0.00E+00 0.00E+00 h/ yr Boating 1 2 1.20E+02 1.20E+02 6.70E+01 0.00E+00 h/ yr Shoreline Recreation 1 2 3.25E+02 3.25E+02 1.40E+01 0.00E+00 h/ yr Fishing from Conowingo Dam 1 2 3.25E+02 3.25E+02 0.00E+00 0.00E+00 h/ yr    710 CFR 50 Appendix I, "Numerical Guides for Design Objectives and Limiting Conditions for Operation to Meet the Criterion "As Low as is Reasonable Achievable" for Radioactive Material in Light
Gaseous Releases There were no gaseous abnormal releases during 2018.
-Water-Cooled Nuclear Power Reactor Effluents".
Changes to the ODCM There were no changes made to the ODCM, nor the ODCM Specifications (Appendix A) during 2018.
8 USGS National Water Informati on Service; Monitoring Site 01576000, Susquehanna River at Marietta, PA;  http://waterdata.usgs.gov/nwis.
Minimum Detectable Concentrations If a radionuclide was not detected, "<LLD" was reported as the activity. Samples were analyzed with techniques that achieved the required Lower Limits of Detection (LLD) specified in ODCMS Table 4.8.B.1, "Radioactive Liquid Waste Sampling and Analysis" (for liquids) or ODCMS Table 4.8.C.1, "Radioactive Gaseous Waste Sampling and Analysis from Main Stack and Vent Stack" (for gases). In all cases, the LLD requirements were satisfied.
Accessed 13 Mar 201 9. 9 From original ODCM. 1 0 RG 1.109, Table A-2. 1 1 All locations from RG 1.109, Section A
Violations There were no effluent release violations for the 2018 reporting period.
-2. Chester Water Authority uses 10% of the RG 1.109 value because it is assumed to have 10% sourced from Conowingo Pond.
12
1 2 PBAPS Environmental Report, Supplement No. 3, Page 19. Boating data is a ratio of Adult:Child rates from RG 1.109, Table A
-2.
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  14  Liquid Effluent Dose Assessment Conclusion For all permitted releases in 2018, t he calculated total body dose was 5.07 E-0 5 mrem and 5.31 E-0 5 mrem to the limiting organ of adult liver. Therefore, PBAPS liquid radioactive effluent controls continue to demonstrate compliance with 10 CFR 50, Appendix I objectives for the purposes of keeping doses to members of the public "as low as is reasonably achievable".
These limiting or maximum calculated doses are a small fraction of t he limits in Appendix I.
Gaseous Dose Assessment The gaseous dose assessment calculates the conservative dose at the limiting receptor location, as defined in the ODCM and at locations from the land-use census , using the 2018 meteorology to demonstrate compliance with 10 CFR 50, Appendix I. The assessment compares the current ODCM locations to the maximum locations from the land use census to ensure the current ODCM locations are still the most impactful dose locations.
Tables 7 and 8 utilized the CY-PB-17 0-210 spreadsheet to calculate the doses for elevated and ground releases with the 2018 MET data and gaseous total activity released, including C
-14. Table 7 utilized MET data from the locations with the highest X/Q from the M ain Offgas Stack and the corresponding Reactor Building Exhaust Vents MET factors.
Table 8 utilized MET data from the locations with the highest D/Q sectors from the Reactor Building Exhaust Vents and the corresponding Main Offgas Stack MET factors
. The X/Q values are very similar to those used in the ODCM, and therefore the differences in noble gas dose is minimal. The larger discrepancies between Iodine, Particulates, Tritium (I/P/T) organ doses can be explained by the differences in pathways. Tables 7 and 8 assume that there is a milk pathway at each of the listed locations. The ODCM defines the milk pathway at 1500m SW and the D/Qs are more comparable (2018 vent: 2.49 E-9 1/m 2 vs. ODCM vent: 1.58E
-09 1/m 2) and therefore
, the dose calculated by ODCM methodology is more accurately representative of the dose to members of the public than the dose reported in Tables 7 and 8
. Table 7. Conservative Maximum Elevated Release Dose from 2018 Source Term and 2018 Meteorology Distance (m) Direction 2018 Highest MS X/Q (D/Q) 2018 Vent X/Q (D/Q) Total Body Dose (mrem)
Skin Dose (mrem) Gamma Air Dose (mrad) Beta Air Dose (mrad) I/P/T/C-14 Dose (mrem) Limiting Receptor 4 600 N 4.34 E-08 (3.13 E-10) 1.47 E-07 (7.62 E-10) 3.88E-02 5.07E-02 4.02E-02 2.78E-02 1.82E-01 Bone 3800 SW 3.63 E-08 (2.38 E-10) 1.64 E-07 (6.06 E-10) 4.33E-02 5.64E-02 4.48E-02 3.08E-02 1.57E-01 Bone   


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC 15  Table 8. Ground-Level Dose from 2018 Source Term and 2018 Meteorology Distance (m) Direction 2018 Highest Vent D/Q (X/Q) 2018 MS X/Q  (D/Q) Total Body Dose (mrem) Skin Dose (mrem) Ga mma Air Dose (mrad) Beta Air Dose (mrad) I/P/T/C-14 Dose (mrem) Limiting Receptor 1200 SSE 1.11 E-0 8 (1.32 E-06) 3.28 E-09  (6.29 E-10) 3.44E-01 4.47E-01 3.56E-01 2.42E-01 1.70E-01 Bone 900 NW 7.61 E-09 (1.3 9 E-06) 5.36 E-09 (7.18 E-10) 3.62E-01 4.70E-01 3.74E-0 1 2.55E-01 1.85E-01 Bone  Gaseous Radioactive Effluent Dose Assessment Conclusion The conservative maximum dose was 1.38 E-01 mrem with the maximum receptor as the child bone which is due to the incorporation of carbon-14 in the calculation.
Peach Bottom Atomic Power Station                                           Licensee:             Exelon Generation Company, LLC Unit 2 and 3                                                                                                            PSEG Nuclear, LLC Dose Assessment Introduction A dose assessment for PBAPS was conducted with the measured cumulative 2018 radioactive effluent source terms, provided in Attachment 2, "Effluent Summary," and the 2018 meteorological (MET) data. This dose assessment verifies that PBAPS continues to demonstrate compliance with the limits as well as the requirement of maintaining the doses "as low as is reasonably achievable" as stated in 10 CFR 50, Appendix I.7 Liquid Dose Assessment Hydrologic Conditions and Receptor Locations of Interest PBAPS is located on the Conowingo Pond formed in the Susquehanna River by the Conowingo Dam. For 2018, the annual average river flow8 was measured as 8.72E+05 ft3/s.
Without C-14, the maximum dose is 5.55 E-0 3 mrem to the infant thyroid. The noble gas limiting air doses were 3.02 E-01 mrad (gamma) and 2.07 E-01 mrad (beta). Noble gas plume conservative dose was 2.92 E-01 mrem to the total body and 3.08 E-01 to the skin mrem for the year. A dose assessment was performed for members of the public due to their activities inside the site boundary, per ODCMS 3.10.2.f. The location where a member of the public would spend a significant amount of time inside the site boundary is the vehicle checkpoint, approximately 1, 300 feet N of the PBAPS Unit 2 and Unit 3 reactor building exhaust vents. Assuming continuous occupancy, the calculated total body and skin doses were 3.85 E-01 mrem and 5.01 E-01 mrem, respectively. The noble gas limiting air doses were 3.9 9 E-01 mrad (gamma) and 2.71 E-01 mrad (beta). The maximum organ dose from the inhalation pathway, not including C
Of the three separate flow regimes that were used in the original Appendix I submittal, the most-limiting of them (<1.50E+04 ft3/s) was used to calculate a dose assessment for this report because this would provide a bounding extreme for all PBAPS liquid effluents. Therefore, although the actual average stream flow for the year was more than double the limiting case, this report will provide an upper limit for the most-limiting dose.
-14, is 2.14E
The annual average dilution factor9 at the Conowingo Intake is 5.40E+00 and the assumption for the reconcentration factor9 is 1.16E+00. The PBAPS shorewidth factor10 of 2.00E-01 was also used.
-03 mrem to the infant thyroid.
No invertebrate intake was examined because invertebrate ingestion pathways are not considered to be significant in the area close to PBAPS. The pathway factors for the various age groups, used to determine dose to the public from liquid effluents are shown in Table 6.
Table 6. Consumption and Usage Rate Assumptions Pathway                          Adult            Teenager            Child          Infant        Units 10 Eating Fish                      2.10E+01           1.60E+01         6.90E+00      0.00E+00        kg/ yr 11 Drinking Water                      7.30E+02          5.10E+02          5.10E+02      5.10E+02          L/ yr 12 Swimming                          2.80E+02          2.80E+02          0.00E+00      0.00E+00        h/ yr 12 Boating                        1.20E+02          1.20E+02          6.70E+01       0.00E+00        h/ yr 12 Shoreline Recreation                  3.25E+02          3.25E+02         1.40E+01       0.00E+00        h/ yr 12 Fishing from Conowingo Dam                  3.25E+02          3.25E+02          0.00E+00      0.00E+00        h/ yr 7
10 CFR 50 Appendix I, "Numerical Guides for Design Objectives and Limiting Conditions for Operation to Meet the Criterion "As Low as is Reasonable Achievable" for Radioactive Material in Light-Water-Cooled Nuclear Power Reactor Effluents".
8 USGS National Water Information Service; Monitoring Site 01576000, Susquehanna River at Marietta, PA; http://waterdata.usgs.gov/nwis. Accessed 13 Mar 2019.
9 From original ODCM.
10 RG 1.109, Table A-2.
11 All locations from RG 1.109, Section A-2. Chester Water Authority uses 10% of the RG 1.109 value because it is assumed to have 10% sourced from Conowingo Pond.
12 PBAPS Environmental Report, Supplement No. 3, Page 19. Boating data is a ratio of Adult:Child rates from RG 1.109, Table A-2.
13


All doses are projected to be much less than the limits, as expected. Again, these dose models incorporate several factors of conservatism including a source term that, by procedure, will use the most dose-limiting noble gas nuclide when no fission gas can be identified by grab sample but activity is detected from the effluent radiation monito r. Exelon Nuclear uses a detailed C-14 dose projection from the Electric Power Research Institute, Technical Report 1021106.
Peach Bottom Atomic Power Station                        Licensee:      Exelon Generation Company, LLC Unit 2 and 3                                                                            PSEG Nuclear, LLC Liquid Effluent Dose Assessment Conclusion For all permitted releases in 2018, the calculated total body dose was 5.07E-05 mrem and 5.31E-05 mrem to the limiting organ of adult liver.
Details for the assumptions used in this calculation may be found there.15  Therefore, PBAPS gaseous radioactive effluent controls continue to demonstrate compliance with 10 CFR 50, Appendix I objectives for the purposes of keeping doses to members of the public "as low as is reasonably achievable".
Therefore, PBAPS liquid radioactive effluent controls continue to demonstrate compliance with 10 CFR 50, Appendix I objectives for the purposes of keeping doses to members of the public "as low as is reasonably achievable". These limiting or maximum calculated doses are a small fraction of the limits in Appendix I.
These limiting or maximum calculated doses are a small fraction of the limits in Appendix I.   
Gaseous Dose Assessment The gaseous dose assessment calculates the conservative dose at the limiting receptor location, as defined in the ODCM and at locations from the land-use census, using the 2018 meteorology to demonstrate compliance with 10 CFR 50, Appendix I. The assessment compares the current ODCM locations to the maximum locations from the land use census to ensure the current ODCM locations are still the most impactful dose locations.
Tables 7 and 8 utilized the CY-PB-170-210 spreadsheet to calculate the doses for elevated and ground releases with the 2018 MET data and gaseous total activity released, including C-14. Table 7 utilized MET data from the locations with the highest X/Q from the Main Offgas Stack and the corresponding Reactor Building Exhaust Vents MET factors. Table 8 utilized MET data from the locations with the highest D/Q sectors from the Reactor Building Exhaust Vents and the corresponding Main Offgas Stack MET factors. The X/Q values are very similar to those used in the ODCM, and therefore the differences in noble gas dose is minimal. The larger discrepancies between Iodine, Particulates, Tritium (I/P/T) organ doses can be explained by the differences in pathways. Tables 7 and 8 assume that there is a milk pathway at each of the listed locations.
The ODCM defines the milk pathway at 1500m SW and the D/Qs are more comparable (2018 vent: 2.49E-9 1/m2 vs. ODCM vent: 1.58E-09 1/m2) and therefore, the dose calculated by ODCM methodology is more accurately representative of the dose to members of the public than the dose reported in Tables 7 and 8.
Table 7. Conservative Maximum Elevated Release Dose from 2018 Source Term and 2018 Meteorology 2018 Highest                                      Gamma    Beta Air  I/P/T/C-Distance                          2018 Vent    Total Body    Skin Dose                              Limiting Direction  MS X/Q                                          Air Dose    Dose    14 Dose (m)                            X/Q (D/Q)    Dose (mrem)      (mrem)                                Receptor (D/Q)                                          (mrad)    (mrad)    (mrem) 4.34E-08    1.47E-07 4600        N                                3.88E-02      5.07E-02 4.02E-02 2.78E-02  1.82E-01  Bone (3.13E-10)  (7.62E-10) 3.63E-08    1.64E-07 3800        SW                                4.33E-02      5.64E-02 4.48E-02  3.08E-02  1.57E-01  Bone (2.38E-10)  (6.06E-10) 14


15 PBAPS uses specific Boiling Water Reactor assumptions because the fraction of C-14 that is in the CO 2 form will vary based on general plant design. This is important because the major dose pathway is through photosynthesis and, therefore, only the oxide form is relevant.
Peach Bottom Atomic Power Station                                  Licensee:          Exelon Generation Company, LLC Unit 2 and 3                                                                                                PSEG Nuclear, LLC Table 8. Ground-Level Dose from 2018 Source Term and 2018 Meteorology 2018 Highest      2018 MS    Total Body                  Gamma          Beta Air    I/P/T/C-Distance                                                                Skin Dose                                              Limiting Direction      Vent D/Q          X/Q          Dose                    Air Dose        Dose      14 Dose (m)                                                                    (mrem)                                                Receptor (X/Q)          (D/Q)        (mrem)                    (mrad)        (mrad)    (mrem) 1.11E-08        3.28E-09 1200            SSE                                        3.44E-01    4.47E-01    3.56E-01      2.42E-01    1.70E-01        Bone (1.32E-06)      (6.29E-10) 7.61E-09        5.36E-09 900          NW                                        3.62E-01    4.70E-01    3.74E-01      2.55E-01    1.85E-01        Bone (1.39E-06)      (7.18E-10)
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  16   
Gaseous Radioactive Effluent Dose Assessment Conclusion The conservative maximum dose was 1.38E-01 mrem with the maximum receptor as the child bone which is due to the incorporation of carbon-14 in the calculation. Without C-14, the maximum dose is 5.55E-03 mrem to the infant thyroid. The noble gas limiting air doses were 3.02E-01 mrad (gamma) and 2.07E-01 mrad (beta). Noble gas plume conservative dose was 2.92E-01 mrem to the total body and 3.08E-01 to the skin mrem for the year.
A dose assessment was performed for members of the public due to their activities inside the site boundary, per ODCMS 3.10.2.f. The location where a member of the public would spend a significant amount of time inside the site boundary is the vehicle checkpoint, approximately 1,300 feet N of the PBAPS Unit 2 and Unit 3 reactor building exhaust vents. Assuming continuous occupancy, the calculated total body and skin doses were 3.85E-01 mrem and 5.01E-01 mrem, respectively. The noble gas limiting air doses were 3.99E-01 mrad (gamma) and 2.71E-01 mrad (beta). The maximum organ dose from the inhalation pathway, not including C-14, is 2.14E-03 mrem to the infant thyroid.
All doses are projected to be much less than the limits, as expected. Again, these dose models incorporate several factors of conservatism including a source term that, by procedure, will use the most dose-limiting noble gas nuclide when no fission gas can be identified by grab sample but activity is detected from the effluent radiation monitor. Exelon Nuclear uses a detailed C-14 dose projection from the Electric Power Research Institute, Technical Report 1021106. Details for the assumptions used in this calculation may be found there.15 Therefore, PBAPS gaseous radioactive effluent controls continue to demonstrate compliance with 10 CFR 50, Appendix I objectives for the purposes of keeping doses to members of the public "as low as is reasonably achievable". These limiting or maximum calculated doses are a small fraction of the limits in Appendix I.
15 PBAPS uses specific Boiling Water Reactor assumptions because the fraction of C-14 that is in the CO2 form will vary based on general plant design. This is important because the major dose pathway is through photosynthesis and, therefore, only the oxide form is relevant.
15


ATTACHMENT 2:
Peach Bottom Atomic Power Station      Licensee: Exelon Generation Company, LLC Unit 2 and 3                                                    PSEG Nuclear, LLC ATTACHMENT 2: EFFLUENT  
EFFLUENT  


==SUMMARY==
==SUMMARY==


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC 17  Gaseous Effluents - Summation of All Releases Period: January 1, 2018 through December 31, 2018 Unit: Peach Bottom A. Fission & Activation Gases Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Est. Total Error % 1. Total Release Ci 1.88E+02 1.58E+02 3.65E+02 1.83E+02 4.00E+01 2. Average release For the Period uCi/ s 2.42E+01 2.01E+01 4.59E+01 2.30E+01 3. Gamma Air Dose mrad 8.6 2 E-02 6.98E-02 7.10 E-02 7.49E-02 4. Beta Air Dose mrad 5.8 9 E-02 4.7 5 E-02 4.9 9 E-02 5.10 E-02 5. Percent of ODCM limit Gamma Air Dose
16
% 8.62E-01 6.98E-01 7.10E-01 7.49E-01 Beta Air Dose
 
% 2.94E-01 2.37E-01 2.49E-01 2.55E-01         B. Iodines
Peach Bottom Atomic Power Station                                     Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                                                        PSEG Nuclear, LLC Gaseous Effluents - Summation of All Releases Period: January 1, 2018 through December 31, 2018                                           Unit: Peach Bottom Est. Total A. Fission & Activation Gases                   Units       Quarter 1     Quarter 2 Quarter 3 Quarter 4     Error %
: 1. Total I
: 1. Total Release                                   Ci       1.88E+02     1.58E+02 3.65E+02   1.83E+02       4.00E+01
-131 Ci 2.74E-05 1.10E-04 2.70E-04 2.20E-04 1.90E+01 2. Average release For the Period uCi/ s 3.53E-06 1.41E-05 3.39E-05 2.77E-05 3. Percent of ODCM limit
: 2. Average release For the Period               uCi/ s     2.42E+01     2.01E+01 4.59E+01   2.30E+01
% * * * *
: 3. Gamma Air Dose                               mrad       8.62E-02     6.98E-02   7.10E-02 7.49E-02
: 4. Beta Air Dose                                 mrad       5.89E-02     4.75E-02   4.99E-02 5.10E-02
: 5. Percent of ODCM limit Gamma Air Dose       %         8.62E-01     6.98E-01   7.10E-01 7.49E-01 Beta Air Dose     %         2.94E-01     2.37E-01   2.49E-01 2.55E-01 B. Iodines
: 1. Total I-131                                     Ci       2.74E-05     1.10E-04   2.70E-04 2.20E-04       1.90E+01
: 2. Average release For the Period               uCi/ s     3.53E-06     1.41E-05   3.39E-05 2.77E-05
: 3. Percent of ODCM limit                           %             *             *         *         *
* No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.
* No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.
C. Particulate
C. Particulate
: 1. Particulates with T1/2 > 8 days Ci 6.61E-05 5.48E-05 1.54E-04 2.56E-04 2.80E+01 2. Average release For the Period uCi/ s 8.50E-06 6.97E-06 1.94E-05 3.22E-05 3. Percent of ODCM limit
: 1. Particulates with T1/2 > 8 days                 Ci       6.61E-05     5.48E-05   1.54E-04 2.56E-04       2.80E+01
% * * * *
: 2. Average release For the Period               uCi/ s     8.50E-06     6.97E-06   1.94E-05 3.22E-05
: 3. Percent of ODCM limit                           %             *             *         *         *
* No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.
* No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.
D. Tritium
D. Tritium
: 1. Total Release Ci 3.81E+00 1.76E+01 2.94E+01 1.88E+01 1.30E+01 2. Average release For the Period uCi/ s 4.90E-01 2.24E+00 3.69E+00 2.36E+00 3. Percent of ODCM limit
: 1. Total Release                                   Ci       3.81E+00     1.76E+01 2.94E+01   1.88E+01       1.30E+01
% * * * *
: 2. Average release For the Period               uCi/ s     4.90E-01     2.24E+00 3.69E+00   2.36E+00
: 3. Percent of ODCM limit                           %             *             *         *         *
* No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.
* No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.
E. Gross Alpha
E. Gross Alpha
: 1. Total Release Ci <LLD <LLD <LLD <LLD 4.00E+02 2. Average release For the Period uCi/ s <LLD <LLD <LLD <LLD 3. Percent of ODCM limit
: 1. Total Release                                   Ci         <LLD         <LLD       <LLD     <LLD         4.00E+02
% * * * *
: 2. Average release For the Period               uCi/ s       <LLD         <LLD       <LLD     <LLD
: 3. Percent of ODCM limit                           %             *             *         *         *
* No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.
* No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.
F. Carbon-14       1. Total Release Ci 9.47E+00 9.47E+00 9.47E+00 9.47E+00 2. Average release For the Period uCi/ s 1.22E+00 1.20E+00 1.19E+00 1.19E+00         G. Iodine-131, 133 and 135, Tritium, Carbon
F. Carbon-14
-14 & Particulate
: 1. Total Release                                   Ci       9.47E+00     9.47E+00 9.47E+00   9.47E+00
: 1. Organ Dose
: 2. Average release For the Period               uCi/ s     1.22E+00     1.20E+00 1.19E+00   1.19E+00 G. Iodine-131, 133 and 135, Tritium, Carbon-14 & Particulate
* mrem 3.45 E-0 2 3.45 E-0 2 3.44 E-0 2 3.44 E-0 2  2. Percent ODCM limit
: 1. Organ Dose*                                   mrem       3.45E-02      3.45E-02  3.44E-02  3.44E-02
% 2.30 E-01 2.30 E-01 2.30 E-01 2.30 E-01 *C-14 contributes mos t significantly; therefore, the quarterly dose to the child bone is reported Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  18  Gaseous Effluents Release Point: Elevated (Main Offgas Stack) Period: January 1, 2018 through December 31, 2018 Unit: Peach Bottom Nuclides Released Continuous Mode Batch Mode
: 2. Percent ODCM limit                             %         2.30E-01     2.30E-01   2.30E-01 2.30E-01
: 1. Fission Gases Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Quarter 1 Quarter 2 Quarter 3 Quarter 4 Unidentified Ci 1.95E+01 4.64E+00 <LLD 3.63E+00 <LLD <LLD <LLD <LLD Ar-41 Ci <LLD <LLD 2.27E-01 <LLD <LLD <LLD <LLD <LLD Kr-85m Ci 5.38E+00 1.60E+00 1.52E+00 4.78E+00 <LLD <LLD <LLD <LLD Kr-87 Ci <LLD <LLD 1.11E+00 <LLD <LLD <LLD <LLD <LLD Kr-88 Ci 7.08E-01 <LLD 1.09E+00 9.86E-01 <LLD <LLD <LLD <LLD Xe-133m Ci <LLD <LLD 1.90E+00 <LLD <LLD <LLD <LLD <LLD Xe-133 Ci 1.75E+00 2.17E+01 1.69E+02 3.46E+01 <LLD <LLD <LLD <LLD Xe-135m Ci <LLD <LLD 4.93E+00 <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD 1.31E+00 1.42E+01 3.76E-02 <LLD <LLD <LLD <LLD Xe-138 Ci 1.96E+00 <LLD 6.01E+00 <LLD <LLD <LLD <LLD <LLD Total For Period Ci 2.93E+01 2.92E+01 2.00E+02 4.40E+01 <LLD <LLD <LLD <LLD 2. Iodines I-131 Ci 2.52E-05 3.26E-05 7.58E-05 1.26E-04 <LLD <LLD <LLD <LLD I-132 Ci <LLD <LLD 1.36E-05 <LLD <LLD <LLD <LLD <LLD I-133 Ci 5.74E-05 9.60E-05 2.30E-04 9.75E-05 <LLD <LLD <LLD <LLD I-135 Ci <LLD 4.10E-05 1.10E-04 1.58E-06 <LLD <LLD <LLD <LLD Total For Period Ci 8.26E-05 1.70E-04 4.29E-04 2.25E-04 <LLD <LLD <LLD <LLD 3. Particulates Sr-89 Ci 2.80E-05 1.91E-05 2.91E-05 2.86E-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 3.79E-07 <LLD 7.16E-08 <LLD <LLD <LLD <LLD <LLD Ba-140 Ci 6.35E-06 3.51E-06 9.13E-06 8.33E-06 <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD 3.17E-06 <LLD <LLD <LLD <LLD Mn-54 Ci 3.06E-07 <LLD <LLD 2.98E-07 <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD 5.28E-07 <LLD <LLD <LLD <LLD Co-60 Ci 7.53E-06 2.14E-06 7.90E-06 8.55E-06 <LLD <LLD <LLD <LLD Ag-110m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zn-65 Ci 4.36E-07 <LLD <LLD 3.38E-06 <LLD <LLD <LLD <LLD Total For Period Ci 4.30E-05 2.48E-05 4.62E-05 5.29E-05 <LLD <LLD <LLD <LLD 4. Tritium H-3 Ci 2.66E-01 8.78E-01 1.66E+00 5.13E+00 <LLD <LLD <LLD <LLD 5. Gross Alpha Gross Alpha Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 6. Carbon-14    C-14 Ci 9.1 9E+00 9.1 9E+00 9.1 9E+00 9.1 9E+00 <LLD <LLD <LLD <LLD Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  19  Gaseous Effluents Release Point: Ground-Level (Units 2 and 3 Reactor Building Exhaust Vents and Abnormal Releases) Period: January 1, 2018 through December 31, 2018 Unit: Peach Bottom Nuclides Released Continuous Mode Batch Mode
*C-14 contributes most significantly; therefore, the quarterly dose to the child bone is reported 17
: 1. Fission Gases Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Quarter 1 Quarte r 2 Quarter 3 Quarter 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 3.19E+01 <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD 3.16E+00 <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 1.59E+0 2 1.29E+02 1.30E+02 1.39E+02 <LLD <LLD <LLD <LLD Total For Period Ci 1.59E+02 1.29E+02 1.65E+02 1.39E+02 <LLD <LLD <LLD <LLD 2. Iodines I-131 Ci 2.22E-06 7.79E-05 1.94E-04 9.41E-05 <LLD <LLD <LLD <LLD I-132 Ci <LLD <LLD 1.30E-04 <LLD <LLD <LLD <LL D <LLD I-133 Ci 1.41E-05 4.25E-04 1.14E-03 1.50E-04 <LLD <LLD <LLD <LLD I-135 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total For Period Ci 1.63E-05 5.0 3 E-04 1.46E-03 2.44E-04 <LLD <LLD <LLD <LLD 3. Particulates 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 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD 6.70E-06 <LLD <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD 7.40E-05 <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD 1.61E-05 <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD 1.07E-05 <LLD <LLD <LLD <LLD Co-60 Ci 2.31E-05 3.01E-05 8.81E-05 8.69E-05 <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD 2.50E-06 <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD 1.31E-05 1.29E-05 <LLD <LLD <LLD <LLD Total For Period Ci 2.31E-05 3.01E-05 1.08E-04 2.03E-04 <LLD <LLD <LLD <LLD 4. Tritium H-3 Ci 3.54E+00 1.67E+01 2.77E+01 1.36E+01 <LLD <LLD <LLD <LLD 5. Gross Alpha Gross Alpha Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 6. Carbon-14    C-14 Ci 2.84E-01 2.84E-01 2.84E-01 2.84E-01 <LLD <LLD <LLD <LLD Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  20  Liquid Effluents - Summation of All Releases Period: January 1, 2018 to December 31, 2018    Unit: Peach Bottom A. Fission & Activation Gases Units Quarter 1 Quarter 2 Quarter 3 Quarter 4  Est. Total Error % 1. Total Release (not including tritium, gases & alpha) Ci 1.28E-03 7.10E-04 7.44E-04 1.91E-03 1.60E+01 2. Average diluted concentration for the Period  2.17E-12 1.07E-12 1.10E-12 2.82E-12  3. Percent of applicable limit Total Body Dose
* % 2.41E-03 5.59E-04 5.57E-04 1.02E-03  Organ Dose* % 1.05E-03 3.31E-04 3.27E-04 5.67E-04  *ODCMS 3.8.B.2.a and ODCMS 3.8.B.2.b (page 7) define the dose limit B. Tritium Est. Total Error % 1. Total Release Ci 4.62E+00 9.93E-01 1.20E+00 9.83E-01 6.40E+00 2. Average diluted concentration for the Period &#xb5;Ci/ mL 7.85E-09 1.49E-09 1.78E-09 1.45E-09  3. Percent of applicable limit*
% 7.85E-05 1.49E-05 1.78E-05 1.45E-05  *10x 10CFR20 Limit of 1.00E
-03 &#xb5;Ci/ mL; ODCMS 3.8.B.1.a C. Dissolved & Entrained Gases Est. Tota l Error % 1. Total Release Ci <LLD <LLD 8.05E-06 <LLD 2.80E+01 2. Average diluted concentration for the Period  <LLD <LLD 1.19E-14 <LLD  3. Percent of ODCM limit
* % 0.00E+00 0.00E+00 5.9 5 E-09 0.00E+00  *ODCM S 3.8.B.1.b Limit for all noble gases is 2.00E-04 &#xb5;Ci/ mL  D. Gross Alpha Activity Est. Total Error % 1. Total Release Ci <LLD <LLD <LLD <LLD 2.30E+01        E. Volume of Waste Released (prior to dilution) Liters 1.58E+08 1.71E+08 1.73E+08 1.73E+08        F. Volume of Dilution Water Used During Period Liters 5.88E+11 6.66E+11 6.74E+11 6.78E+11 Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  21  Liquid Effluents Release Points - Liquid Radwaste, RHR Leaks and Groundwater Period: January 1, 2018 through December 31, 2018    Unit: Peach Bottom Nuclides Released Continuous Mode Batch Mode  Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Quarter 1 Quarter 2 Quarter 3 Quarter 4 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 <LLD <LLD <LLD 9.07E-06 2.09E-07 1.57E-07 6.26E-07 3.09E-07 I-131 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Co-58 Ci 1.01E-04 3.25E-05 1.71E-05 2.55E-05 <LLD <LLD <LLD <LLD Co-60 Ci 6.79E-04 4.45E-04 5.58E-04 1.42E-03 2.90E-06 <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zn-65 Ci 9.70E-05 4.15E-05 2.32E-05 5.74E-05 <LLD <LLD <LLD <LLD Mn-54 Ci 2.55E-04 1.80E-04 1.38E-04 1.90E-04 <LLD <LLD <LLD <LLD Cr-51 Ci 4.99E-05 <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Nb-95 Ci <LLD <LLD <LLD <LLD <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 <LLD <LLD <LLD <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD <LLD <LLD 4.74E-05 <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 3.08E-05 <LLD <LLD 1.63E-04 <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ni-63 Ci 1.53E-05 1.07E-05 6.84E-06 4.68E-05 <LLD <LLD <LLD <LLD          H-3 Ci 7.14E-01 9.93E-01 7.60E-01 9.83E-01 3.90E+00 2.76E-04 4.40E-01 6.06E-04 P-32 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total for Period Ci 7.15E-01 9.93E-01 7.61E-01 9.85E-01 3.90E+00 2.76E-04 4.40E-01 6.06E-04          Xe-133 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD <LLD 8.05E-06 <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total for Period (ex-tritium, gases and alpha) Ci 1.23E-03 7.10E-04 7.44E-04 1.91E-03 5.05E-05 1.57E-07 6.26E-07 3.09E-07 Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  22 ATTACHMENT 3:
SOLID WASTE AND IRRADIATED FUEL SHIPMENTS Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  23  Solid Waste Shipped 1. Type of Waste  Units 2018 Est. error %
A:  Spent Resin, Filters, Sludges, Evaporator Bottoms, etc  m 3 1.33E+02  Ci 5.09E+02 2.50E+01 B:  Dry Compressible Waste, Contaminated Equipment, etc. m 3 6.02E+02  Ci 1.89E+00 2.50E+01 C: Irradiated Components, Control Rods, etc. m 3 0.00E+00  Ci 0.00E+00 2.50E+01 D:  Other (Oil, SBLC)  m 3 3.09E+01  Ci 2.21E-03 2.50E+01  2. Estimate of Major Nuclide Composition (by type of waste)  a. Spent-Resin, Filters, Sludges, Evaporator Bottoms, etc. Nuclide Abundance % (no cutoff)
Activity (Ci)
H-3 3.30E-01% 1.67E+00 C-14 9.80E-01% 5.00E+00 Cr-51 0.00E+00% 1.36E-03 Mn-54 3.4 9E+00% 1.77E+01 Fe-55 2.79E+01% 1.42E+02 Fe-59 0.00E+00% 2.04E-04 Co-57 1.00E-02% 5.49E-02 Co-58 1.80E-01% 9.00E-01 Co-60 5.31E+01% 2.70E+02 Ni-59 0.00E+00% 1.99E-02 Ni-63 1.27E+00% 6.48E+00 Zn-65 6.21E+00% 3.16E+01 Sr-89 0.00E+00% 3.23E-03 Sr-90 2.00E-02% 1.18E-01 Zr-95 0.00E+00% 3.33E-10 Nb-95 0.00E+00% 1.98E-04 Tc-99 1.00E-02% 3.23E-02 Ru-106 0.00E+00% 5.91E-05 Nuclide Abundance % (no cutoff)
Activity (Ci)
Ag-110m 2.50E-01% 1.26E+00 Sn-113 0.00E+00% 4.35E-05 Sb-124 0.00E+00% 2.71E-04 Sb-125 1.00E-02% 6.08E-02 I-131 0.00E+00% 6.84E-16 Cs-134 2.00E-02% 7.92E-02 Cs-137 6.17E+00% 3.14E+01 Ba-140 0.00E+00% 1.21E-10 La-140 0.00E+00% 2.59E-65 Ce-141 0.00E+00% 6.43E-06 Ce-14 4 4.00E-02% 2.16E-01 Pu-238 0.00E+00% 1.17E-03 Pu-239 0.00E+00% 3.07E-04 Pu-241 4.00E-02% 1.95E-01 Am-241 0.00E+00% 7.83E-04 Cm-242 0.00E+00% 8.28E-05 Cm-243 0.00E+00% 6.49E-04 Cm-244 0.00E+00% 1.46E-03 Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  24  b. Dry, Compressible Waste, Contaminated Equipment, etc. Nuclide Abundance % (no cutoff)
Activity (Ci)
H-3 3.70E-01% 6.96E-03 C-14 3.50E-01% 6.61E-03 Cr-51 1.32E+00% 2.49E-02 Mn-54 2.33E+00% 4.40E-02 Fe-55 2.35E+01% 4.43E-01 Fe-59 4.50E-01% 8.56E-03 Co-58 5.90E-01% 1.11E-02 Co-60 6.04E+01% 1.14E+00 Ni-63 8.80E-01% 1.66E-02 Zn-65 4.41E+00% 8.32E-02 Sr-89 4.00E-02% 7.60E-04 Nuclide Abundance % (no cutoff)
Activity (Ci)
Sr-90 0.00E+00% 8.48E-05 Nb-95 6.00E-02% 1.12E-03 Ag-110m 3.20E-01% 6.04E-03 Sb-125 4.00E-02% 6.99E-04 Cs-137 4.52E+00% 8.53E-02 Ce-144 4.10E-01% 7.75E-03 Pu-239 0.00E+00% 2.78E-07 Pu-241 0.00E+00% 7.30E-05 Am-241 0.00E+00% 2.54E-07 Cm-242 0.00E+00% 1.91E-07 Cm-244 0.00E+00% 7.37E-07  c. Irradiated Components, Control Rods, etc. There were no shipments of irradiated components or control rods in 2018.
: d. Other: Oil Nuclide Abundance % (no cutoff)
Activity (Ci)
H-3 3.60E-01% 8.00E-06 Cr-51 2.80E+00% 6.19E-05 Mn-54 2.08E+00% 4.59E-05 Fe-55 1.09E+01% 2.41E-04 Co-58 8.50E-01% 1.88E-05    Nuclide Abundance % (no cutoff) Activity (Ci)
Co-60 7.42E+01% 1.64E-03 Ni-63 7.40E-01% 1.63E-05 Zn-65 3.37E+00% 7.44E-05 Cs-137 3.86E+00% 8.52E-05 Ce-144 7.90E-01% 1.75E-05  3. Solid Waste Disposition Number of shipments Mode of Transportation Destination 13 Hittman Transport Services Energy Solution Services (CVRF) Bear Creek Operations 9 Hittman Transport Services Energy Solution Services (GRF) Gallaher Road Operations 29 Hittman Transport Services Energy Solutions LLC Clive Disposal Site
- Containerized Waste Facility Irradiated Fuel Shipments No shipment of irradiated fuel was made during the reporting period of 2018. Changes to Process Control Program (PCP) There were no changes made to RW
-AA-100 "Process Control Program for Radioactive Waste" during the 2018 reporting period.


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC 25 ATTACHMENT 4:
Peach Bottom Atomic Power Station                             Licensee:       Exelon Generation Company, LLC Unit 2 and 3                                                                                    PSEG Nuclear, LLC Gaseous Effluents Release Point: Elevated (Main Offgas Stack)
RADIOLOGICAL IMPACT ON MAN Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC 26  Radiological Impact on Man Effluent Applicable Organ Estimated Dose Age Group Location % of Applicable Limit Limit Unit Distance (meters) Direction (toward) Noble Gas Gamma - Air Dose 3.02E-01 All 1.10E+03 SSE 1.51E+00 2.00E+01 mrad Noble Gas Beta - Air Dose 2.07E-01 All 1.10E+03 SSE 5.18E-01 4.00E+01 mrad Noble Gas Total Body (gamma) 2.92E-01 All 1.10E+03 SSE 2.92E+00 1.00E+01 mrem Noble Gas Skin (Beta) 3.80E-01 All 1.10E+03 SSE 1.27E+00 3.00E+01 mrem Gaseous Iodine, Particulate, Carbon-14 & Tritium Bone 1.38E-01 Child 1.50E+03 S W 4.60E-01 3.00E+01 mrem Gaseous Iodine, Particulate & Tritium Thyroid 5.55E-03 Infant 1.50E+03 S W 1.85E-02 3.00E+01 mrem Liquid Total Body (gamma) 1.30E-04 Child Site Boundary 2.17E-03 6.00E+00 mrem Liquid GI-LLI 2.28E-04 Adult 1.14E-03 2.00E+01 mrem Direct Radiation Total Body 0.00E+00 All 1.1 9E+03 SSE 0.00E+00 2.20E+01 mrem  40 CFR 190 Doses Effluent Applicable Organ Estimated Dose Age Group Location % of Applicable Limit Limit Unit Distance (meters) Direction (toward) Total Dose Total Body 2.92E-01 All 1.1 9E+03 SSE 1.17E+00 2.50E+01 mrem Total Dose Thyroid 5.55E-03 All 1.1 9E+03 SSE 7.40E-03 7.50E+01 mrem Total Dose Bone 1.38E-01 All 1.1 9E+03 SSE 5.52E-01 2.50E+01 mrem Total Dose Total Body 2.92E-01 All 1.1 9E+03 SSE 9.73E+00 3.00E+00 mrem Total Dose Bone 1.38E-01 All 1.1 9E+03 SSE 4.60E+00 3.00E+00 mrem Total Dose Thyroid 3.07E-01 All 1.1 9E+03 SSE 5.59E-01 5.50E+01 mrem Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelo n Generation Company, LLC PSEG Nuclear, LLC  27 ATTACHMENT 5:
Period: January 1, 2018 through December 31, 2018                                          Unit: Peach Bottom Nuclides Released                        Continuous Mode                                  Batch Mode
METEOROLOGICAL DATA Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  28                            Peach Bottom Atomic Power Station Period of Record: January
: 1. Fission Gases    Unit Quarter 1 Quarter 2    Quarter 3      Quarter 4 Quarter 1 Quarter 2   Quarter 3 Quarter 4 Unidentified          Ci  1.95E+01 4.64E+00        <LLD        3.63E+00    <LLD      <LLD        <LLD      <LLD Ar-41                Ci    <LLD      <LLD        2.27E-01         <LLD      <LLD      <LLD        <LLD      <LLD Kr-85m                Ci  5.38E+00  1.60E+00      1.52E+00      4.78E+00   <LLD      <LLD        <LLD      <LLD Kr-87                Ci    <LLD      <LLD        1.11E+00        <LLD      <LLD      <LLD        <LLD      <LLD Kr-88                Ci  7.08E-01   <LLD        1.09E+00      9.86E-01   <LLD      <LLD        <LLD      <LLD Xe-133m              Ci    <LLD      <LLD        1.90E+00        <LLD      <LLD      <LLD        <LLD      <LLD Xe-133                Ci  1.75E+00  2.17E+01     1.69E+02      3.46E+01    <LLD      <LLD        <LLD      <LLD Xe-135m              Ci    <LLD      <LLD        4.93E+00        <LLD      <LLD      <LLD        <LLD      <LLD Xe-135                Ci    <LLD    1.31E+00     1.42E+01       3.76E-02    <LLD      <LLD        <LLD      <LLD Xe-138                Ci  1.96E+00    <LLD        6.01E+00         <LLD      <LLD      <LLD        <LLD      <LLD Total For Period      Ci  2.93E+01 2.92E+01     2.00E+02      4.40E+01    <LLD      <LLD        <LLD      <LLD
- March 2018 Stability Class
: 2. Iodines I-131                Ci  2.52E-05  3.26E-05      7.58E-05      1.26E-04    <LLD      <LLD        <LLD      <LLD I-132                Ci    <LLD      <LLD        1.36E-05        <LLD      <LLD      <LLD        <LLD      <LLD I-133                Ci  5.74E-05  9.60E-05      2.30E-04       9.75E-05    <LLD      <LLD        <LLD      <LLD I-135                Ci    <LLD    4.10E-05      1.10E-04       1.58E-06    <LLD      <LLD        <LLD      <LLD Total For Period      Ci  8.26E-05  1.70E-04      4.29E-04      2.25E-04    <LLD      <LLD        <LLD      <LLD
- Extremely Unstable
: 3. Particulates Sr-89                Ci  2.80E-05  1.91E-05      2.91E-05      2.86E-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  3.79E-07    <LLD        7.16E-08        <LLD      <LLD      <LLD        <LLD      <LLD Ba-140                Ci  6.35E-06  3.51E-06      9.13E-06      8.33E-06    <LLD      <LLD        <LLD      <LLD La-140                Ci    <LLD      <LLD          <LLD          <LLD      <LLD      <LLD        <LLD      <LLD Cr-51                Ci    <LLD      <LLD          <LLD        3.17E-06    <LLD      <LLD        <LLD      <LLD Mn-54                Ci  3.06E-07    <LLD          <LLD        2.98E-07    <LLD      <LLD        <LLD      <LLD Co-58                Ci    <LLD      <LLD          <LLD        5.28E-07    <LLD      <LLD        <LLD      <LLD Co-60                Ci  7.53E-06  2.14E-06      7.90E-06      8.55E-06    <LLD      <LLD        <LLD      <LLD Ag-110m              Ci    <LLD      <LLD          <LLD          <LLD      <LLD      <LLD        <LLD      <LLD Ce-141                Ci    <LLD      <LLD          <LLD          <LLD      <LLD      <LLD        <LLD      <LLD Ce-144                Ci    <LLD      <LLD          <LLD          <LLD      <LLD      <LLD        <LLD      <LLD Zn-65                Ci  4.36E-07    <LLD          <LLD        3.38E-06    <LLD      <LLD        <LLD      <LLD Total For Period      Ci  4.30E-05  2.48E-05      4.62E-05      5.29E-05    <LLD      <LLD        <LLD      <LLD
- 150Ft-33Ft Delta
: 4. Tritium H-3                   Ci  2.66E-01  8.78E-01     1.66E+00      5.13E+00    <LLD      <LLD        <LLD      <LLD
-T (F)                                      Winds Measured at 33 Feet
: 5. Gross Alpha Gross Alpha          Ci    <LLD      <LLD          <LLD          <LLD      <LLD      <LLD        <LLD      <LLD
: 6. Carbon-14 C-14                  Ci  9.19E+00  9.19E+00      9.19E+00      9.19E+00    <LLD      <LLD        <LLD      <LLD 18


Wind Speed (in mph)
Peach Bottom Atomic Power Station                          Licensee:        Exelon Generation Company, LLC Unit 2 and 3                                                                                PSEG Nuclear, LLC Gaseous Effluents Release Point: Ground-Level (Units 2 and 3 Reactor Building Exhaust Vents and Abnormal Releases)
Wind            Direction   1
Period: January 1, 2018 through December 31, 2018                                          Unit: Peach Bottom Nuclides Released                              Continuous Mode                                Batch Mode Quarter Quarter   Quarter  Quarter
-3   4-7    8-12   13-18   19-24   > 24   Total
: 1. Fission Gases        Unit  Quarter 1 Quarter 2      Quarter 3  Quarter 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        3.19E+01      <LLD        <LLD  <LLD      <LLD      <LLD Xe-135                    Ci      <LLD      <LLD        3.16E+00      <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    1.59E+02  1.29E+02      1.30E+02   1.39E+02      <LLD   <LLD      <LLD      <LLD Total For Period          Ci    1.59E+02  1.29E+02      1.65E+02    1.39E+02      <LLD  <LLD      <LLD      <LLD
            --------- -----  -----  -----  -----  -----  -----  -----                 N          0      1      1      0       0       0       2
: 2. Iodines I-131                    Ci    2.22E-06  7.79E-05      1.94E-04    9.41E-05      <LLD  <LLD      <LLD      <LLD I-132                    Ci      <LLD      <LLD        1.30E-04      <LLD        <LLD  <LLD      <LLD      <LLD I-133                    Ci    1.41E-05  4.25E-04      1.14E-03    1.50E-04      <LLD  <LLD      <LLD      <LLD I-135                    Ci      <LLD      <LLD          <LLD        <LLD        <LLD  <LLD      <LLD      <LLD Total For Period          Ci    1.63E-05   5.03E-04      1.46E-03    2.44E-04      <LLD  <LLD      <LLD      <LLD
: 3. Particulates 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      <LLD      <LLD          <LLD        <LLD        <LLD  <LLD      <LLD      <LLD Ba-140                    Ci      <LLD      <LLD        6.70E-06      <LLD        <LLD  <LLD      <LLD      <LLD La-140                    Ci      <LLD      <LLD          <LLD        <LLD        <LLD  <LLD      <LLD      <LLD Cr-51                    Ci      <LLD      <LLD          <LLD      7.40E-05      <LLD   <LLD      <LLD      <LLD Mn-54                    Ci      <LLD      <LLD          <LLD      1.61E-05      <LLD  <LLD      <LLD      <LLD Co-58                    Ci      <LLD      <LLD          <LLD      1.07E-05      <LLD  <LLD      <LLD      <LLD Co-60                    Ci    2.31E-05   3.01E-05      8.81E-05    8.69E-05      <LLD  <LLD      <LLD      <LLD Sb-124                    Ci      <LLD      <LLD          <LLD      2.50E-06      <LLD   <LLD      <LLD      <LLD Ce-141                    Ci      <LLD      <LLD          <LLD        <LLD        <LLD  <LLD      <LLD      <LLD Ce-144                    Ci      <LLD      <LLD          <LLD        <LLD        <LLD  <LLD      <LLD      <LLD Zn-65                    Ci      <LLD      <LLD        1.31E-05    1.29E-05      <LLD   <LLD      <LLD      <LLD Total For Period          Ci    2.31E-05  3.01E-05      1.08E-04    2.03E-04      <LLD  <LLD      <LLD      <LLD
: 4. Tritium H-3                      Ci    3.54E+00  1.67E+01      2.77E+01    1.36E+01      <LLD  <LLD       <LLD      <LLD
: 5. Gross Alpha Gross Alpha              Ci      <LLD       <LLD          <LLD        <LLD        <LLD  <LLD       <LLD      <LLD
: 6. Carbon-14 C-14                      Ci    2.84E-01  2.84E-01       2.84E-01    2.84E-01      <LLD  <LLD      <LLD      <LLD 19


NNE         0      10       1       0      0      0     11 NE         1       7       0      0      0      0      8             ENE         2       6      0      0      0      0      8 E           5      3       0      0       0       0      8
Peach Bottom Atomic Power Station                                        Licensee:         Exelon Generation Company, LLC Unit 2 and 3                                                                                                      PSEG Nuclear, LLC Liquid Effluents - Summation of All Releases Period: January 1, 2018 to December 31, 2018                                                            Unit: Peach Bottom Est. Total A. Fission & Activation Gases                      Units       Quarter 1      Quarter 2    Quarter 3    Quarter 4         Error %
: 1. Total Release (not including tritium, gases                  1.28E-03        7.10E-04    7.44E-04      1.91E-03          1.60E+01
& alpha)                                              Ci
: 2. Average diluted concentration for the                        2.17E-12        1.07E-12    1.10E-12      2.82E-12 Period                                            Ci/ mL
: 3. Percent of applicable limit Total Body Dose*                                      %        2.41E-03        5.59E-04    5.57E-04      1.02E-03 Organ Dose*                                          %        1.05E-03        3.31E-04    3.27E-04      5.67E-04
*ODCMS 3.8.B.2.a and ODCMS 3.8.B.2.b (page 7) define the dose limit Est. Total B. Tritium                                                                                                                  Error %
: 1. Total Release                                      Ci        4.62E+00        9.93E-01    1.20E+00      9.83E-01         6.40E+00
: 2. Average diluted concentration for the                        7.85E-09        1.49E-09    1.78E-09      1.45E-09 Period                                            &#xb5;Ci/ mL
: 3. Percent of applicable limit*                      %        7.85E-05        1.49E-05    1.78E-05      1.45E-05
*10x 10CFR20 Limit of 1.00E-03 &#xb5;Ci/ mL; ODCMS 3.8.B.1.a Est. Total C. Dissolved & Entrained Gases                                                                                              Error %
: 1. Total Release                                      Ci          <LLD            <LLD      8.05E-06        <LLD           2.80E+01
: 2. Average diluted concentration for the                          <LLD            <LLD      1.19E-14        <LLD Period                                            Ci/ mL
: 3. Percent of ODCM limit*                            %        0.00E+00      0.00E+00    5.95E-09      0.00E+00
*ODCMS 3.8.B.1.b Limit for all noble gases is 2.00E-04 &#xb5;Ci/ mL Est. Total D. Gross Alpha Activity                                                                                                Error %
: 1. Total Release                                      Ci        <LLD          <LLD        <LLD        <LLD          2.30E+01 E. Volume of Waste Released (prior to                          1.58E+08      1.71E+08    1.73E+08    1.73E+08 dilution)                                          Liters F. Volume of Dilution Water Used During                        5.88E+11      6.66E+11    6.74E+11    6.78E+11 Period                                              Liters 20


ESE          0      16       1      0       0       0      17 SE          0       5      0       0       0       0       5 SSE          0       3      0       0       0       0       3
Peach Bottom Atomic Power Station                                Licensee:      Exelon Generation Company, LLC Unit 2 and 3                                                                                        PSEG Nuclear, LLC Liquid Effluents Release Points - Liquid Radwaste, RHR Leaks and Groundwater Period: January 1, 2018 through December 31, 2018                                                  Unit: Peach Bottom Nuclides Released                        Continuous Mode                              Batch Mode Unit    Quarter 1 Quarter 2    Quarter 3 Quarter 4  Quarter 1 Quarter 2    Quarter 3    Quarter 4 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      <LLD      <LLD        <LLD  9.07E-06  2.09E-07  1.57E-07    6.26E-07    3.09E-07 I-131                Ci      <LLD      <LLD        <LLD    <LLD      <LLD      <LLD        <LLD        <LLD Co-58                Ci    1.01E-04  3.25E-05    1.71E-05 2.55E-05    <LLD       <LLD        <LLD        <LLD Co-60                Ci    6.79E-04  4.45E-04    5.58E-04 1.42E-03  2.90E-06    <LLD        <LLD        <LLD Fe-59                Ci       <LLD       <LLD        <LLD    <LLD       <LLD       <LLD        <LLD        <LLD Zn-65                Ci    9.70E-05  4.15E-05    2.32E-05 5.74E-05    <LLD      <LLD        <LLD        <LLD Mn-54                Ci    2.55E-04  1.80E-04    1.38E-04 1.90E-04    <LLD      <LLD        <LLD        <LLD Cr-51                Ci    4.99E-05    <LLD        <LLD    <LLD      <LLD      <LLD        <LLD        <LLD Zr-95                Ci      <LLD      <LLD        <LLD    <LLD      <LLD      <LLD        <LLD        <LLD Nb-95                Ci      <LLD      <LLD        <LLD    <LLD      <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      <LLD        <LLD    <LLD      <LLD      <LLD        <LLD        <LLD La-140              Ci      <LLD      <LLD        <LLD    <LLD    4.74E-05    <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    3.08E-05    <LLD        <LLD  1.63E-04    <LLD      <LLD        <LLD        <LLD Sb-124              Ci      <LLD      <LLD        <LLD    <LLD      <LLD      <LLD        <LLD        <LLD Sb-125              Ci      <LLD      <LLD        <LLD    <LLD      <LLD      <LLD        <LLD        <LLD Ni-63                Ci    1.53E-05  1.07E-05    6.84E-06 4.68E-05    <LLD      <LLD        <LLD        <LLD H-3                  Ci    7.14E-01  9.93E-01    7.60E-01 9.83E-01  3.90E+00  2.76E-04    4.40E-01    6.06E-04 P-32                Ci      <LLD      <LLD        <LLD    <LLD      <LLD       <LLD        <LLD        <LLD Total for Period    Ci    7.15E-01  9.93E-01    7.61E-01 9.85E-01  3.90E+00  2.76E-04    4.40E-01    6.06E-04 Xe-133              Ci      <LLD      <LLD        <LLD    <LLD      <LLD      <LLD        <LLD        <LLD Xe-135              Ci      <LLD      <LLD        <LLD    <LLD      <LLD      <LLD      8.05E-06       <LLD Xe-138              Ci       <LLD       <LLD        <LLD    <LLD       <LLD       <LLD        <LLD        <LLD Total for Period (ex-tritium, Ci    1.23E-03  7.10E-04    7.44E-04 1.91E-03  5.05E-05  1.57E-07    6.26E-07    3.09E-07 gases and alpha) 21


S          0      5      6      1      0      0      12
Peach Bottom Atomic Power Station    Licensee: Exelon Generation Company, LLC Unit 2 and 3                                                PSEG Nuclear, LLC ATTACHMENT 3: SOLID WASTE AND IRRADIATED FUEL SHIPMENTS 22


SSW         0       0       6       0       0       0       6 SW          0       0       4       0       0       0       4 WSW          0       1       0       0       0       0       1
Peach Bottom Atomic Power Station                    Licensee:  Exelon Generation Company, LLC Unit 2 and 3                                                                      PSEG Nuclear, LLC Solid Waste Shipped 1.Type of Waste Units      2018  Est. error %
A: Spent Resin, Filters, Sludges, Evaporator Bottoms, etc              m 3 1.33E+02 Ci    5.09E+02    2.50E+01 B: Dry Compressible Waste, Contaminated Equipment, etc.                m3    6.02E+02 Ci    1.89E+00    2.50E+01 C: Irradiated Components, Control Rods, etc.                          m3    0.00E+00 Ci    0.00E+00    2.50E+01 D: Other (Oil, SBLC)                                                  m3    3.09E+01 Ci    2.21E-03  2.50E+01 2.Estimate of Major Nuclide Composition (by type of waste)
: a. Spent-Resin, Filters, Sludges, Evaporator Bottoms, etc.
Abundance %                                          Abundance %
Nuclide        (no cutoff)        Activity (Ci)          Nuclide    (no cutoff)      Activity (Ci)
H-3          3.30E-01%          1.67E+00              Ag-110m    2.50E-01%        1.26E+00 C-14         9.80E-01%          5.00E+00                Sn-113    0.00E+00%        4.35E-05 Cr-51        0.00E+00%            1.36E-03              Sb-124    0.00E+00%        2.71E-04 Mn-54        3.49E+00%          1.77E+01                Sb-125    1.00E-02%        6.08E-02 Fe-55        2.79E+01%          1.42E+02                I-131    0.00E+00%        6.84E-16 Fe-59        0.00E+00%            2.04E-04              Cs-134    2.00E-02%        7.92E-02 Co-57        1.00E-02%            5.49E-02              Cs-137    6.17E+00%        3.14E+01 Co-58        1.80E-01%            9.00E-01              Ba-140    0.00E+00%        1.21E-10 Co-60        5.31E+01%          2.70E+02                La-140    0.00E+00%        2.59E-65 Ni-59        0.00E+00%            1.99E-02              Ce-141    0.00E+00%        6.43E-06 Ni-63        1.27E+00%          6.48E+00                Ce-144    4.00E-02%        2.16E-01 Zn-65        6.21E+00%          3.16E+01                Pu-238    0.00E+00%        1.17E-03 Sr-89        0.00E+00%            3.23E-03              Pu-239    0.00E+00%        3.07E-04 Sr-90        2.00E-02%            1.18E-01              Pu-241    4.00E-02%        1.95E-01 Zr-95        0.00E+00%            3.33E-10              Am-241    0.00E+00%        7.83E-04 Nb-95        0.00E+00%            1.98E-04              Cm-242    0.00E+00%        8.28E-05 Tc-99        1.00E-02%            3.23E-02              Cm-243    0.00E+00%        6.49E-04 Ru-106        0.00E+00%            5.91E-05              Cm-244    0.00E+00%        1.46E-03 23


W           0      0       1      0      0      0      1
Peach Bottom Atomic Power Station                      Licensee:      Exelon Generation Company, LLC Unit 2 and 3                                                                            PSEG Nuclear, LLC
: b. Dry, Compressible Waste, Contaminated Equipment, etc.
Abundance                                                  Abundance Nuclide      % (no cutoff)      Activity (Ci)              Nuclide    % (no cutoff)    Activity (Ci)
H-3        3.70E-01%          6.96E-03                  Sr-90      0.00E+00%          8.48E-05 C-14        3.50E-01%          6.61E-03                  Nb-95      6.00E-02%          1.12E-03 Cr-51        1.32E+00%          2.49E-02                Ag-110m      3.20E-01%          6.04E-03 Mn-54        2.33E+00%          4.40E-02                  Sb-125      4.00E-02%          6.99E-04 Fe-55        2.35E+01%          4.43E-01                  Cs-137      4.52E+00%           8.53E-02 Fe-59        4.50E-01%          8.56E-03                  Ce-144      4.10E-01%          7.75E-03 Co-58        5.90E-01%          1.11E-02                  Pu-239      0.00E+00%          2.78E-07 Co-60        6.04E+01%          1.14E+00                  Pu-241       0.00E+00%          7.30E-05 Ni-63        8.80E-01%          1.66E-02                  Am-241       0.00E+00%          2.54E-07 Zn-65        4.41E+00%          8.32E-02                  Cm-242       0.00E+00%          1.91E-07 Sr-89        4.00E-02%          7.60E-04                  Cm-244       0.00E+00%          7.37E-07
: c. Irradiated Components, Control Rods, etc.
There were no shipments of irradiated components or control rods in 2018.
: d. Other: Oil Abundance %                                                Abundance %
Nuclide        (no cutoff)       Activity (Ci)            Nuclide        (no cutoff)      Activity (Ci)
H-3          3.60E-01%          8.00E-06                Co-60        7.42E+01%          1.64E-03 Cr-51          2.80E+00%          6.19E-05                  Ni-63        7.40E-01%          1.63E-05 Mn-54          2.08E+00%          4.59E-05                Zn-65        3.37E+00%          7.44E-05 Fe-55          1.09E+01%          2.41E-04                Cs-137        3.86E+00%          8.52E-05 Co-58          8.50E-01%          1.88E-05                Ce-144        7.90E-01%          1.75E-05
: 3. Solid Waste Disposition Number of shipments      Mode of Transportation        Destination 13            Hittman Transport Services    Energy Solution Services (CVRF) Bear Creek Operations 9              Hittman Transport Services    Energy Solution Services (GRF) Gallaher Road Operations Energy Solutions LLC Clive Disposal Site- Containerized Waste 29            Hittman Transport Services    Facility Irradiated Fuel Shipments No shipment of irradiated fuel was made during the reporting period of 2018.
Changes to Process Control Program (PCP)
There were no changes made to RW-AA-100 "Process Control Program for Radioactive Waste" during the 2018 reporting period.
24


WNW          0      0      0      1      0      0      1 NW          0      0      0      2      0      0      2 NNW          0      1      1      0      0      0      2
Peach Bottom Atomic Power Station    Licensee: Exelon Generation Company, LLC Unit 2 and 3                                                  PSEG Nuclear, LLC ATTACHMENT 4: RADIOLOGICAL IMPACT ON MAN 25


Variable     0       0       0      0       0      0      0
Peach Bottom Atomic Power Station          Licensee:      Exelon Generation Company, LLC Unit 2 and 3                                                              PSEG Nuclear, LLC Radiological Impact on Man Location            % of Applicable Estimated  Age  Distance Direction    Applicable Effluent      Organ      Dose  Group  (meters) (toward)        Limit      Limit      Unit Gamma -
Noble Gas                3.02E-01  All  1.10E+03        SSE    1.51E+00  2.00E+01    mrad Air Dose Beta - Air Noble Gas                2.07E-01  All  1.10E+03        SSE    5.18E-01  4.00E+01    mrad Dose Total Noble Gas        Body    2.92E-01  All  1.10E+03        SSE    2.92E+00  1.00E+01    mrem (gamma)
Skin Noble Gas                3.80E-01  All  1.10E+03        SSE    1.27E+00  3.00E+01    mrem (Beta)
Gaseous Iodine, Particulate,    Bone    1.38E-01  Child 1.50E+03        SW      4.60E-01  3.00E+01    mrem Carbon-14 &
Tritium Gaseous Iodine, Thyroid  5.55E-03 Infant 1.50E+03        SW     1.85E-02  3.00E+01    mrem Particulate &
Tritium Total Liquid        Body    1.30E-04  Child                        2.17E-03  6.00E+00    mrem (gamma)                        Site Boundary Liquid       GI-LLI  2.28E-04 Adult                          1.14E-03  2.00E+01    mrem Direct        Total 0.00E+00  All  1.19E+03        SSE    0.00E+00  2.20E+01    mrem Radiation       Body 40 CFR 190 Doses Location          % of Applicable Estimated  Age  Distance    Direction Applicable Effluent      Organ       Dose  Group  (meters)    (toward)    Limit      Limit      Unit Total Total Dose              2.92E-01  All  1.19E+03        SSE    1.17E+00  2.50E+01  mrem Body Total Dose    Thyroid    5.55E-03  All  1.19E+03        SSE    7.40E-03  7.50E+01  mrem Total Dose      Bone    1.38E-01  All  1.19E+03        SSE    5.52E-01  2.50E+01  mrem Total Total Dose              2.92E-01  All  1.19E+03        SSE    9.73E+00  3.00E+00  mrem Body Total Dose      Bone    1.38E-01  All  1.19E+03        SSE    4.60E+00  3.00E+00  mrem Total Dose    Thyroid    3.07E-01  All  1.19E+03        SSE    5.59E-01  5.50E+01  mrem 26


Total        8     58      21      4      0      0      91
Peach Bottom Atomic Power Station     Licensee: Exelon Generation Company, LLC Unit 2 and 3                                                  PSEG Nuclear, LLC ATTACHMENT 5: METEOROLOGICAL DATA 27


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
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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        1        1        0        0        0        2 NNE          0      10        1        0        0        0      11 NE          1        7        0        0        0        0        8 ENE          2        6        0        0        0        0        8 E            5        3        0        0        0        0        8 ESE          0      16        1        0        0        0      17 SE          0        5        0        0        0        0        5 SSE          0        3        0        0        0        0        3 S            0        5        6        1        0        0      12 SSW          0        0        6        0        0        0        6 SW          0        0        4        0        0        0        4 WSW          0        1        0        0        0        0        1 W            0        0        1        0        0        0        1 WNW          0        0        0        1        0        0        1 NW          0        0        0        2        0        0        2 NNW          0        1        1        0        0        0        2 Variable      0        0        0        0        0        0        0 Total        8      58      21        4        0        0      91 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 28


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   29                            Peach Bottom Atomic Power Station Period of Record: January  
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 Stability Class - Moderately Unstable - 150Ft-33Ft Delta-T (F)
- March 2018 Stability Class  
Winds Measured at 33 Feet Wind Speed (in mph)
- Moderately Unstable  
Wind Direction    1-3    4-7    8-12    13-18    19-24      > 24    Total
- 150Ft-33Ft Delta
            ---------  -----    -----  -----    -----    -----    -----    -----
-T (F)
N            0        4        3        0        0        0        7 NNE          0        4        1        0        0        0        5 NE          3        1        0        0        0        0        4 ENE          1        2        0        0        0        0        3 E            5        0        0        0        0        0        5 ESE          4        3        0        0        0        0        7 SE          0        5        0        0        0        0        5 SSE          0        1        1        0        0        0        2 S            1        3        4        1        0        0        9 SSW          0        3        4        0        0        0        7 SW          0        0        1        0        0        0        1 WSW          0        1        3        0        0        0        4 W            0        2      12        5        0        0      19 WNW          0        1        5        7        0        0      13 NW          0        0        7      13        0        0      20 NNW          0        1      16      13        3        0      33 Variable      0        0        0        0        0        0        0 Total        14      31      57      39        3        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 29
Winds Measured at 33 Feet


Wind Speed (in mph)
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 Stability Class - Slightly Unstable - 150Ft-33Ft Delta-T (F)
Wind           Direction   1
Winds Measured at 33 Feet Wind Speed (in mph)
-3   4-7    8-12   13-18   19-24   > 24   Total
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
            ---------  -----   -----  -----   -----   -----   -----   -----                 N          0      4       3       0      0      0      7
            ---------  -----     -----  -----     -----   -----   -----     -----
N           1        4        1        0        0        0        6 NNE          0        4        3        0        0        0        7 NE          2        1        0        0        0        0        3 ENE          1        0        0        0        0        0        1 E            2        0        0        0        0        0        2 ESE          2        3        0        0        0        0        5 SE           0        1        0        0        0        0        1 SSE          0        2        4        0        0        0        6 S            0        2        2        0        0        0        4 SSW          0        5        1        1        0        0        7 SW          0        0        0        0        0        0        0 WSW          0        0        2        0        0        0        2 W            0        1        7        0        0        0        8 WNW          0        2        8        9        0        0      19 NW          0        1       21        6        0        0       28 NNW          0       2       17      14        1        0      34 Variable      0        0        0        0        0        0        0 Total        8      28      66       30        1        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:                0 30


NNE          0      4      1       0      0      0      5
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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      34      20        1        0        0      60 NNE          15      31      11        0        0        0      57 NE          19      21        2        0        0        0      42 ENE          21        5        0        0        0        0      26 E          15        0        0        0        0        0      15 ESE          11      12        0        0        0        0      23 SE          6      30        1        0        0        0      37 SSE          15      52      17        1        0        0      85 S          10      47      33        8        0        0      98 SSW          6      12        2        0        0        0      20 SW          4        6        4         0        0        0      14 WSW          3        6        4        0        0        0       13 W            3      18       42        6        0        0      69 WNW          3      42      56        27        0        0     128 NW          5      40      99        43        3        2      192 NNW          4       22      72        56      17        10      181 Variable      0        0        0         0        0        0        0 Total       145      378    363        142      20        12    1060 Hours of calm in this stability class:            1 Hours of missing wind measurements in this stability class:                5 Hours of missing stability measurements in all stability classes:                  0 31


NE          3       1      0      0      0      0      4              ENE         1       2       0      0      0      0      3 E           5       0      0      0      0      0      5
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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          10        9        1       0        0        0       20 NNE          12        5        0        0        0        0      17 NE          14        4        0        0        0        0      18 ENE          15        0        0        0        0        0      15 E          22        4        0        0        0        0      26 ESE         31        9        0        0        0        0       40 SE          28       18        3        0         0        0      49 SSE          21       22        4        0        0        0      47 S          20      22        4        0        0        0      46 SSW          17        7        1        0        0        0      25 SW          10        8        0        0        0        0      18 WSW          10      31        3       0        0        0      44 W           14       35        9        0        0        0      58 WNW          15      36        9        0         0        0      60 NW          11       15        1        0        0        0      27 NNW          11      11        2        1        0       0      25 Variable       0       0        0        0        0        0        0 Total       261      236      37        1        0        0      535 Hours of calm in this stability class:            8 Hours of missing wind measurements in this stability class:                2 Hours of missing stability measurements in all stability classes:                0 32


ESE          4      3       0      0      0       0       7
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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            7        1        0        0        0        0        8 NNE          1        0        0        0        0        0        1 NE          5        0        0        0        0        0        5 ENE          4        0        0        0        0        0        4 E            8        0        0        0        0        0        8 ESE           9        3        0        0        0        0      12 SE          6        2        0        0        0        0        8 SSE          1        0        0        0        0        0        1 S            5        1        0        0        0        0        6 SSW          4        0        0        0        0        0        4 SW          5        4        0        0        0        0        9 WSW         13        4       0        0        0        0       17 W            8        5        0        0        0        0       13 WNW          4        1        0       0        0        0        5 NW          6        1        0        0        0        0        7 NNW          6        2        0        0        0        0        8 Variable       0       0        0        0        0        0        0 Total        92       24        0        0        0        0      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:                0 33


SE         0       5       0       0       0       0       5 SSE          0       1       1      0      0       0       2
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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          2        0        0        0        0        0        2 NE          0        0        0        0        0        0        0 ENE          2        0        0        0        0        0        2 E            3        0        0        0        0        0        3 ESE          9        1        0        0        0        0      10 SE           1        0       0        0        0        0        1 SSE          5       0        0       0         0       0         5 S            1        0        0        0        0        0         1 SSW          2        0        0        0        0        0        2 SW          4        0        0        0        0        0        4 WSW          7        0        0        0        0        0        7 W            6        2        0        0        0        0        8 WNW          3        1       0        0        0        0        4 NW          8        0        0        0        0        0        8 NNW          5        0        0        0        0        0        5 Variable       0        0        0        0        0        0        0 Total        60        4        0        0        0        0      64 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:                0 34


S           1       3       4       1      0       0       9
Peach Bottom Atomic Power Station           Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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        3        0        0        0        3 ENE          0        1        1        0        0        0        2 E            0        0        0        0        0        0        0 ESE          0        1        1       0        0        0        2 SE          0        0        0        0        0        0        0 SSE          0        0        0        0        0        0        0 S            0        0        0        0        0        0        0 SSW          0        0        0        0        0        0        0 SW          0        0        0        0        0        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        2        5        0        0        0        7 Hours of calm in this stability class:            0 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                0 35


SSW          0      3      4      0      0      0      7 SW          0      0      1      0      0      0      1 WSW          0      1      3      0      0      0      4
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 Stability Class - Moderately Unstable - 316Ft-33Ft Delta-T (F)
 
Winds Measured at 320 Feet Wind Speed (in mph)
W          0      2      12      5      0      0      19 WNW          0      1      5      7      0      0      13
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
 
            ---------  -----     -----  -----     -----   -----   -----     -----
NW          0      0      7      13      0      0      20 NNW          0      1      16      13      3      0      33
N           0       0       0       0         0       0         0 NNE           0       1       0       0         0       0         1 NE           0       0       2       0         0       0         2 ENE           0       1       1        0        0       0        2 E           0       0       1        0        0       0        1 ESE          0       2        2       0         0       0         4 SE           0       0       3       1        0       0         4 SSE          0       0       1       0        0       0        1 S            0       0       0       1         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       4      10       2         0       0      16 Hours of calm in this stability class:           0 Hours of missing wind measurements in this stability class:               0 Hours of missing stability measurements in all stability classes:                 0 36
 
Variable      0      0      0      0      0      0      0
 
Total      14      31      57      39      3      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
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   30                            Peach Bottom Atomic Power Station Period of Record: January  
- March 2018 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      4      1      0       0       0       6
 
NNE          0       4      3      0       0       0       7
 
NE          2      1      0      0 0      0      3 ENE          1      0      0      0      0      0      1 E           2      0       0      0      0      0      2
 
ESE          2      3      0      0      0      0      5
 
SE          0      1       0       0       0       0       1 SSE          0      2      4      0      0      0      6
 
S           0       2      2      0       0      0      4
 
SSW          0      5      1      1      0      0      7 SW          0      0      0      0      0      0      0 WSW          0      0      2       0       0       0       2
 
W           0       1       7      0      0 0      8 WNW          0      2      8      9      0      0      19
 
NW          0      1      21      6      0      0      28 NNW          0      2      17      14      1       0      34
 
Variable      0      0      0      0      0      0      0
 
Total       8      28      66      30      1      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:    0
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  31                            Peach Bottom Atomic Power Station Period of Record: January
- March 2018 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      34      20      1      0      0      60
 
NNE         15      31      11      0       0       0      57 NE         19      21      2       0      0      0      42 ENE        21      5      0      0      0      0      26
 
E         15      0       0       0       0      0      15
 
ESE         11      12      0       0      0       0      23 SE          6      30      1      0      0      0      37 SSE         15      52      17      1       0       0      85 S          10      47      33      8      0      0      98
 
SSW          6      12      2       0       0       0     20 SW          4       6      4      0      0      0      14 WSW          3      6      4      0      0      0      13
 
W           3      18      42      6      0       0     69 WNW          3     42      56      27      0       0     128
 
NW          5      40      99      43      3      2    192 NNW          4     22      72      56      17      10    181
 
Variable      0       0       0      0      0      0      0
 
Total      145    378    363    142      20      12    1060
 
Hours of calm in this stability class:    1 Hours of missing wind measurements in this stability class:
5    Hours of missing stability measurements in all stability classes:    0
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  32                            Peach Bottom Atomic Power Station Period of Record: January
- March 2018 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          10      9      1      0      0      0      20
 
NNE         12      5      0       0      0       0      17 NE         14      4      0       0       0       0      18 ENE         15      0       0      0      0      0      15
 
E          22      4      0       0      0      0      26
 
ESE         31      9      0       0       0       0     40 SE         28      18      3      0       0       0      49 SSE         21      22      4      0       0       0     47 S          20      22      4      0       0      0     46
 
SSW         17      7      1      0       0       0      25 SW         10      8      0      0      0      0     18 WSW         10      31      3      0       0       0     44
 
W          14      35      9      0       0      0      58
 
WNW         15      36      9      0       0      0     60 NW         11      15      1      0       0      0      27 NNW        11      11      2      1      0      0      25
 
Variable      0      0      0      0      0      0      0
 
Total      261    236      37      1      0      0    535
 
Hours of calm in this stability class:    8 Hours of missing wind measurements in this stability class:    2    Hours of missing stability measurements in all stability classes:    0
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  33                            Peach Bottom Atomic Power Station Period of Record: January
- March 2018 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          7      1      0       0       0       0       8
 
NNE          1      0       0       0       0      0      1
 
NE          5      0      0      0      0      0      5 ENE          4      0      0      0      0      0      4 E           8      0       0       0       0       0       8
 
ESE          9      3      0       0       0      0 12              SE          6      2      0      0      0      0      8 SSE          1      0      0      0      0      0      1
 
S           5      1      0       0       0       0       6
 
SSW 4      0       0       0      0      0      4 SW          5      4      0      0      0      0      9 WSW         13      4      0       0      0      0      17
 
W           8      5      0       0       0       0     13
 
WNW          4      1      0       0       0      0       5
 
NW          6      1      0       0       0       0       7 NNW          6      2      0       0      0      0      8
 
Variable      0      0      0      0      0       0      0
 
Total       92      24      0       0      0      0    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:    0
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  34                            Peach Bottom Atomic Power Station Period of Record: January
- March 2018 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          2      0      0      0      0      0      2
 
NE          0      0 0      0      0      0      0 ENE          2      0      0      0      0      0      2 E          3      0      0      0      0      0       3
 
ESE          9      1      0      0      0      0      10               SE          1      0      0      0      0      0      1 SSE          5      0      0      0      0      0      5
 
S          1      0      0      0      0      0      1
 
SSW          2       0       0      0      0      0      2 SW          4      0      0      0      0      0      4 WSW          7      0      0      0      0      0      7
 
W          6      2      0      0      0      0      8
 
WNW          3      1      0      0      0      0      4
 
NW          8      0      0      0      0      0      8 NNW          5      0      0      0      0      0      5
 
Variable      0      0      0      0      0      0      0
 
Total      60      4      0      0      0      0      64 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:     0


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   35                            Peach Bottom Atomic Power Station Period of Record: January  
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 Stability Class - Slightly Unstable - 316Ft-33Ft Delta-T (F)
- March 2018 Stability Class  
- Extremely Unstable - 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N           0       0       0       0       0       0       0
N           0       0       0       0         0       0         0 NNE           0       1        0       0         0       0         1 NE           0       1        2        0         0       0         3 ENE           0       2        0        0         0       0         2 E           0       2        0       0         0       0         2 ESE           0       1       0        0         0       0         1 SE           0       1        6        0         0       0         7 SSE           0       0       0       0         0       0         0 S           0       0       2        1        0       0         3 SSW           0       0       1        2        0       0         3 SW           0       0       1        1        0       0         2 WSW           0       0       0       0         0       0         0 W           0       0       0       2        0       0         2 WNW           0       0       0       0         0       1        1 NW           0       0       0       0         0       4        4 NNW           0       0       0       0         0       0         0 Variable      0       0       0       0         0        0         0 Total        0       8       12        6        0       5       31 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
 
NNE         0       0       0       0       0       0      0
 
NE         0       0       3      0       0       0      3 ENE         0       1      1      0       0       0       2 E           0       0       0       0       0       0      0
 
ESE         0       1       1      0       0       0       2              SE         0       0       0       0      0      0      0 SSE         0       0       0       0       0       0       0
 
S           0       0       0       0       0      0      0
 
SSW         0       0       0       0      0      0      0 SW         0       0       0       0      0      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       2      5      0       0      0      7
 
Hours of calm in this stability class:     0 Hours of missing wind measurements in this stability class:     0 Hours of missing stability measurements in all stability classes:     0


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   36                            Peach Bottom Atomic Power Station Period of Record: January  
Peach Bottom Atomic Power Station           Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 Stability Class - Neutral - 316Ft-33Ft Delta-T (F)
- March 2018 Stability Class  
- Moderately Unstable
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18     19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Tot al            ---------  -----   -----  -----   -----   -----   -----   -----                 N           0      0       0      0      0      0      0
            ---------  -----     -----  -----     -----     -----   -----     -----
 
N           4        9       33        25        6        0      77 NNE           2        8       32        15        1       0      58 NE          0      11       19        16        1       0      47 ENE           1       6       15        4        0       0      26 E            2       3        7        1         0       0      13 ESE           0      11       11        6        0       0      28 SE           3      20       32        2        0       0      57 SSE           3       11       40        7        0       0      61 S           0      13       65        30       13        3      124 SSW          2       11       23        9        0       1      46 SW           1        5        9        3        0       0      18 WSW           3        2        9        12        0       0      26 W           0       6       14        33       33        6       92 WNW           2        4       17        63       45        33      164 NW           1        7       33        88       86        54      269 NNW           0       6       19        69       50        32      176 Variable       0       0       0         0         0       0         0 Total        24      133    378        383     235       129    1282 Hours of calm in this stability class:           1 Hours of missing wind measurements in this stability class:                 4 Hours of missing stability measurements in all stability classes:                 0 38
NNE         0       1       0      0      0      0       1
 
NE          0      0      2      0      0      0      2 ENE         0      1      1      0       0      0      2 E          0      0      1       0       0      0      1
 
ESE         0      2      2       0       0      0      4 SE         0      0      3      1       0       0      4 SSE         0       0      1       0       0      0      1
 
S           0      0       0       1       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      4     10       2      0      0      16
 
Hours of calm in this stability class:     0 Hours of missing wind measurements in this stability class:     0 Hours of missing stability measurements in all stability classes:     0


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   37                            Peach Bottom Atomic Power Station Period of Record: January  
Peach Bottom Atomic Power Station           Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 Stability Class - Slightly Stable - 316Ft-33Ft Delta-T (F)
- March 2018 Stability Class - Slightly Unstable
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18     19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total           ---------  -----   -----  -----   -----   -----   -----   -----                 N           0       0       0      0      0      0      0
            ---------  -----     -----  -----     -----     -----   -----     -----
 
N           2       14        9        3        0       0      28 NNE           2        6        6        0         0       0      14 NE           5        8        7        4        0       0      24 ENE          6        4        3         0         0       0      13 E           4        9        4        1        0       0      18 ESE           3       17       12        3        0       0      35 SE           2       12       20        5        0       0      39 SSE           3       18       23        15        3        0      62 S            1       21       50        23       12        0     107 SSW           2      13       33        11        3       0      62 SW          0       7        6        3         0       0      16 WSW          1       2      13        14        0       0      30 W            0       4       14        24        5        0      47 WNW           2       4       18        34       14        0      72 NW           4        3       23        34        2        0      66 NNW           3        5       13        11        0       0      32 Variable       0       0       0         0         0       0         0 Total        40     147    254        185       39        0      665 Hours of calm in this stability class:            1 Hours of missing wind measurements in this stability class:                3 Hours of missing stability measurements in all stability classes:                  0 39
NNE         0       1      0       0      0      0      1
 
NE         0       1      2      0      0      0      3 ENE          0       2      0       0      0      0      2 E           0       2      0      0      0      0      2
 
ESE         0       1       0       0      0      0      1 SE         0       1      6       0       0      0      7 SSE         0       0       0      0       0       0       0
 
S           0      0      2      1      0      0       3 SSW          0      0       1      2      0      0      3
 
SW          0       0      1       1      0      0      2 WSW          0       0       0      0      0      0      0
 
W           0      0      0      2      0      0       2
 
WNW          0      0      0      0      0      1      1
 
NW         0      0      0      0       0      4      4 NNW         0       0       0      0       0       0       0
 
Variable      0      0       0       0       0       0       0
 
Total        0      8     12      6       0       5     31


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
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 Stability Class - Moderately Stable - 316Ft-33Ft Delta-T (F)
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   38                            Peach Bottom Atomic Power Station Period of Record: January  
- March 2018 Stability Class  
- Neutral - 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N          4      9      33      25      6      0     77
N           1        1        0        0        0        0        2 NNE           0       2       1       0        0        0         3 NE           1        0       2        0        0        0         3 ENE           0        0        0        0        0        0         0 E           0        2       0        0        0       0         2 ESE           0       1        2        0        0       0         3 SE           0        2        1        2         0       0         5 SSE           0        1        3       0        0       0         4 S           1        4        2        0        0        0         7 SSW           1        2       6        1        0        0      10 SW           0        5       4        2        0        0      11 WSW           3       1        5        7        0        0      16 W           1        2        3        3        1        0      10 WNW           1        4        2       2        1        0       10 NW           0        1        1       1        0        0        3 NNW          0        2        7       1        0        0      10 Variable       0        0        0        0        0        0        0 Total        9       30       39       19        2        0      99 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
 
NNE          2       8      32      15      1       0     58
 
NE         0     11      19      16      1      0     47 ENE         1      6      15      4      0       0     26 E           2       3      7      1      0       0     13
 
ESE         0     11 11      6      0       0     28 SE         3      20      32      2       0       0     57 SSE         3     11      40      7      0       0     61
 
S           0     13      65      30      13      3    124 SSW         2     11      23      9      0      1      46
 
SW         1      5       9      3      0      0      18 WSW         3       2      9      12      0      0      26
 
W           0      6      14      33      33      6      92
 
WNW         2      4      17      63      45      33    164
 
NW         1       7     33      88      86      54    269 NNW          0      6      19 69      50      32    176
 
Variable     0      0       0       0      0       0       0


Total      24    133    378    383    235    129    1282 Hours of calm in this stability class:    1 Hours of missing wind measurements in this stability class:    4 Hours of missing stability measurements in all stability classes:    0
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 Stability Class - Extremely Stable - 316Ft-33Ft Delta-T (F)
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   39                            Peach Bottom Atomic Power Station Period of Record: January  
- March 2018 Stability Class  
- Slightly Stable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N          2     14      9      3      0       0     28
N           0        0        0        0        0        0        0 NNE           0        2       0        0        0       0         2 NE          0        0        0       0         0       0         0 ENE           0        0        0        0        0        0        0 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          0        0        1        0        0        0        1 SW          1        0        6       1        0        0        8 WSW          1        0        5        3         0        0        9 W            0        1        5        7        0       0      13 WNW           0        1        1        2        0        0        4 NW          1        1        2        0        0        0        4 NNW          1       2        7        0        0       0      10 Variable       0       0        0        0        0        0        0 Total        4        7       27       13        0       0      51 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
 
NNE          2       6      6      0       0       0     14
 
NE          5      8      7      4      0       0     24 ENE         6       4      3       0       0      0      13 E           4       9      4       1       0       0     18
 
ESE          3      17      12       3       0       0     35 SE          2      12      20       5       0       0     39 SSE          3      18      23      15      3       0     62
 
S          1      21      50      23      12      0     107 SSW          2      13      33      11      3      0     62


SW          0      7      6      3      0       0     16 WSW         1      2      13      14       0      0      30
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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            4      11        3        0        0        0      18 NNE          3      26        0        0        0        0      29 NE          9        2        0        0        0        0      11 ENE          9        4        0        0        0        0      13 E          17        4        0        0        0        0      21 ESE          7      16        4        0        0        0      27 SE          6      12        2        0        0        0      20 SSE          0        7        2        0        0        0        9 S            1        4        8        3         0        0       16 SSW          0        0        5        4        0        0        9 SW          0        0        3        1        0       0         4 WSW           0        0        0        1        0        0        1 W            0        0        1        0        0        0        1 WNW          0        0        5        2        0        0        7 NW          0        0        4        1         0        0        5 NNW          4        7       12        0        0        0      23 Variable       0       0        0        0        0        0        0 Total        60      93       49      12        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:                5 42


W          0      4      14     24       5       0      47
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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            3      10        2        0        0        0      15 NNE          7        8        0        0        0        0      15 NE          10        0        0        0        0        0      10 ENE          14        7        0        0        0        0      21 E            6        7        0        0        0        0      13 ESE          1        2        2        0        0        0        5 SE          1        1        1        0        0        0        3 SSE          1        7        6        0        0        0      14 S            0        5        5        3        0        0      13 SSW          0        1      14        0        0        0      15 SW          0        3        9        1        0        0      13 WSW          0        0        4        2        0        0        6 W           0        2      10        2        0        0      14 WNW           0        1        9        5        2        0      17 NW          0        1      14       3        0        0      18 NNW          2        9      29        6        0        0      46 Variable       0        0        0        0        0        0        0 Total        45       64    105        22        2        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:                5 43


WNW          2       4     18      34      14       0      72
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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            4        4        3        0        0        0      11 NNE          6        2        0        0        0        0        8 NE          6        0        0        0        0        0        6 ENE          1        5        0        0        0        0        6 E            6        0        0        0        0        0        6 ESE          1        2        1        0        0        0        4 SE          2        3        0        0        0        0        5 SSE          4        5        1        0        0        0      10 S            0        4        6        1        0        0      11 SSW          1        3        1        0        0        0        5 SW          1        1        2        0        0        0        4 WSW          0        0        3        1        0        0        4 W            0        5        3        0        0        0        8 WNW          0        2        4        2        1        0        9 NW          2        2        5        0        0        0        9 NNW          2        8        7        2        0        0      19 Variable      0        0        0        0        0        0        0 Total        36      46       36        6        1        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:                5 44


NW         4      3     23     34      2       0     66 NNW          3       5      13      11       0      0      32
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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          31      32        7        0        0        0      70 NNE          39      20        0        0        0        0      59 NE         33        4       0        0        0        0      37 ENE          25        5        0        0        0        0      30 E          30      13        2        0        0        0       45 ESE          8      11        3       0        0        0      22 SE          13      22        6        0        0        0      41 SSE          18      53      13        0        0        0      84 S          14      31      22        1        0        0      68 SSW          5      23       6        0        0        0      34 SW          6        8        9        0        0        0      23 WSW          4      13        7        1        0        0      25 W            5      12      22        1        0        0      40 WNW          10      20      33      10        1        0      74 NW          7       20       37        6        0       0      70 NNW          21      36      29        7        0        0       93 Variable       0       0        0        0        0        0        0 Total       269      323    196        26        1        0      815 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:                5 45


Variable     0      0      0      0      0      0      0
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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          37      10        0        0        0        0      47 NNE          27        9        0        0        0        0      36 NE          20        1        0        0        0        0      21 ENE          23        2        0        0        0        0      25 E          14        3        0        0        0        0      17 ESE          17        4        0        0        0        0      21 SE          36        6        0        0        0        0      42 SSE          31      27        2        0        0        0      60 S          23      24        4        0        0        0      51 SSW          24      18        0        0        0        0      42 SW          10        8        0        0        0        0      18 WSW          18      21        4        0        0        0      43 W          14      27        5        0        0        0      46 WNW          6      23        0        0        0        0      29 NW          17      34        0        0        0        0      51 NNW          25      14        1        0        0        0      40 Variable      0        0        0        0        0        0        0 Total      342      231      16        0        0        0      589 Hours of calm in this stability class:            9 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                5 46


Total       40     147     254     185     39      0     665
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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            6        0        0        0        0        0        6 NNE          4        0        0        0        0        0        4 NE          7        0        0        0        0        0        7 ENE          3        0        0        0        0        0        3 E            2        0        0        0        0        0        2 ESE          10        1        0        0        0        0      11 SE          3        0        0        0        0        0        3 SSE          6        1        0        0        0        0        7 S            4        0        0        0        0        0        4 SSW          4        4        0        0        0        0        8 SW          9        1        0        0        0        0      10 WSW          14        2        1        0        0        0      17 W          16      10        0        0        0        0      26 WNW          9        6        0        0        0        0      15 NW          5        1        0        0        0        0        6 NNW          4        4        0        0        0        0        8 Variable      0        0        0        0        0        0        0 Total      106      30        1        0        0        0     137 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:                5 47


Hours of calm in this stability class:     1 Hours of missing wind measurements in this stability class:     3 Hours of missing stability measurements in all stability classes:     0
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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          0        0        0        0        0        0        0 NE          1        0        0        0        0        0        1 ENE          1        0        0        0        0        0        1 E            4        0        0        0        0        0        4 ESE          9        0        0        0        0        0        9 SE          0        0        0        0        0        0        0 SSE          1        0        0        0        0        0        1 S            2        0        0        0        0        0        2 SSW          0        0        0        0        0        0        0 SW          2        0        0        0        0        0        2 WSW          6        6        0        0        0        0      12 W            4        4        0        0        0        0        8 WNW          2        0        0        0        0        0        2 NW          0        0        0        0        0        0        0 NNW          1        0        0        0        0        0        1 Variable      0        0        0        0        0        0        0 Total        35      10        0        0        0        0      45 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:                 5 48


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   40                            Peach Bottom Atomic Power Station Period of Record: January
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 Stability Class - Extremely Unstable - 316Ft-33Ft Delta-T (F)
- March 2018 Stability Class  
- Moderately Stable
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N           1      1      0       0       0       0       2
N           0        0        0        0         0       0         0 NNE           0       1       0        0         0       0         1 NE           0       3        2       0         0       0         5 ENE           0       2        1        0         0       0         3 E           0       2       0       0         0       0         2 ESE           1        1       6        0         0       0         8 SE           0       0        0        6        0       0         6 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        1        9        9        6        0       0      25 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:                5 49
 
NNE         0       2      1       0       0       0       3
 
NE         1      0       2       0       0       0       3 ENE         0       0       0       0      0      0      0 E           0       2       0       0       0       0       2
 
ESE         0      1       2      0       0       0       3 SE         0       2      1      2      0       0       5 SSE         0       1      3      0       0       0       4
 
S          1      4      2      0 0       0       7
 
SSW          1      2      6      1      0       0     10
 
SW         0       5      4      2      0       0     11 WSW         3      1      5      7      0       0     16
 
W          1      2      3      3      1      0     10
 
WNW          1      4      2      2      1      0     10
 
NW         0       1      1      1      0       0       3 NNW         0      2      7      1      0       0     10
 
Variable      0       0       0       0       0      0       0


Total        9      30      39      19      2      0      99
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 Stability Class - Moderately Unstable - 316Ft-33Ft Delta-T (F)
 
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
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   41                            Peach Bottom Atomic Power Station Period of Record: January
- March 201 8          Stability Class  
- Extremely Stable
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N           0       0       0       0       0       0      0
N           0       1        0       0         0       0         1 NNE           0       4        2       0        0       0         6 NE          0       3        0       0         0       0         3 ENE          0       1        3        1        0       0         5 E            0       1        0       0         0       0         1 ESE          0       3        2        0         1        0         6 SE           0       0        2        2        0        0         4 SSE          0       0       0       0         0       0         0 S            0       0       0       2        1        0         3 SSW          0       0       0       0         1        0         1 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       13       9        5        3        0      30 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:                 5 50
 
NNE         0       2       0       0       0       0       2              NE          0       0       0       0       0       0       0 ENE          0       0       0       0       0       0       0 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          0       0       1      0       0       0       1
 
SW          1      0       6      1      0       0       8 WSW          1      0       5      3      0       0       9
 
W           0       1      5      7      0       0     13
 
WNW          0       1      1      2      0       0       4
 
NW          1      1      2      0       0       0       4 NNW          1      2      7      0       0       0     10
 
Variable     0       0       0       0       0       0       0
 
Total       4       7      27      13       0      0      51
 
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
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  42                          Peach Bottom Atomic Power Station                            Period of Record: April
- June 2018          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          4      11      3      0      0      0      18
 
NNE          3      26      0      0      0 0      29 NE          9      2      0      0      0      0      11
 
ENE          9      4      0      0      0      0      13
 
E          17      4      0      0      0      0      21 ESE          7      16      4      0      0      0      27 SE          6      12      2      0      0      0      20
 
SSE          0      7      2      0      0      0      9
 
S          1      4      8      3      0      0      16
 
SSW          0      0      5      4      0      0      9
 
SW          0      0      3      1      0      0      4
 
WSW          0      0      0      1      0      0 1
W          0      0      1      0      0      0      1
 
WNW          0      0      5      2      0      0      7
 
NW          0      0      4      1      0      0      5


NNW 4      7      12      0      0      0      23
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                           PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 Stability Class - Slightly Unstable - 316Ft-33Ft Delta-T (F)
 
Variable      0      0      0      0      0      0      0
 
Total      60      93      49      12      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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  43                            Peach Bottom Atomic Power Station Period of Record: April
- June 2018          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          3      10      2      0      0      0      15
 
NNE          7      8      0      0      0      0      15 NE        10      0      0      0      0      0      10 ENE        14      7      0      0      0      0      21
 
E           6      7      0      0      0      0      13
 
ESE          1      2      2      0      0      0      5 SE          1      1      1      0      0      0      3 SSE          1      7      6      0      0      0      14
 
S          0      5      5      3      0      0      13
 
SSW          0      1      14      0      0      0      15
 
SW          0      3      9      1      0      0      13 WSW          0      0      4      2      0      0      6
 
W          0      2      10      2      0      0      14
 
WNW          0      1      9      5      2      0      17
 
NW          0      1      14      3      0      0      18 NNW          2      9      29      6      0      0      46
 
Variable      0      0      0      0      0      0      0
 
Total      45      64    105      22      2      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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  44                            Peach Bottom Atomic Power Station Period of Record:
April - June 2018          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          4      4      3      0      0      0      11
 
NNE          6      2      0      0      0      0      8
 
NE          6      0      0      0      0      0      6 ENE          1      5      0      0      0      0      6 E          6      0      0      0      0      0      6
 
ESE          1      2      1      0      0      0      4 SE          2      3      0      0      0      0      5 SSE          4      5      1      0      0      0      10
 
S          0 4      6      1      0      0      11
 
SSW          1      3      1      0      0      0      5
 
SW          1      1      2      0      0      0      4 WSW          0      0      3      1      0      0      4 W          0      5      3      0      0      0      8
 
WNW          0      2      4      2      1      0      9
 
NW          2      2      5      0      0      0      9 NNW          2      8      7      2      0      0      19
 
Variable      0      0      0      0      0      0      0
 
Total      36      46      36      6      1      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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  45                            Peach Bottom Atomic Power Station Period of Record: April
- June 2018                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          31      32      7      0      0      0      70
 
NNE        39      20      0      0      0      0      59 NE        33      4      0      0      0      0      37 ENE        25      5      0      0      0      0      30
 
E          30      13      2      0      0      0      45
 
ESE          8      11      3      0      0      0      22 SE        13      22      6      0      0      0      41 SSE        18      53      13      0      0      0      84 S          14 31      22      1      0      0      68
 
SSW          5      23      6      0      0      0      34 SW          6      8      9      0      0      0      23 WSW          4      13      7      1      0      0      25 W          5      12      22      1      0      0      40
 
WNW        10      20      33      10      1      0      74
 
NW          7      20      37      6      0      0      70
 
NNW        21      36      29      7      0      0      93
 
Variable      0      0      0      0      0      0      0
 
Total      269    323    196      26      1      0    815
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   46                            Peach Bottom Atomic Power Station Period of Record: April  
- June 2018           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          37      10      0      0      0      0      47
 
NNE        27      9      0 0      0      0      36 NE        20      1      0      0      0      0      21 ENE        23      2      0      0      0      0      25
 
E          14      3      0      0      0      0      17
 
ESE        17      4      0      0      0      0      21 SE        36      6      0      0      0      0      42 SSE        31      27      2      0      0      0      60 S          23      24      4      0      0      0      51
 
SSW        24      18      0      0      0      0      42 SW        10      8      0      0      0      0      18 WSW        18      21      4      0 0      0      43
 
W          14      27      5      0      0      0      46
 
WNW          6      23      0      0      0      0      29 NW        17      34      0      0      0      0      51 NNW        25      14      1      0      0      0      40
 
Variable      0      0      0      0      0      0      0
 
Total      342    231      16      0      0      0    589
 
Hours of calm in this stability class:    9 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  47                            Peach Bottom Atomic Power Station Period of Record: April
- June 2018          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          6      0      0      0      0      0      6
 
NNE          4      0      0      0      0      0      4 NE          7      0      0      0      0      0      7 ENE          3      0      0      0      0      0      3 E          2      0      0      0      0      0 2
ESE        10      1      0      0      0      0      11 SE          3      0      0      0      0      0      3 SSE          6      1      0      0      0      0      7
 
S 4      0      0      0      0      0      4
 
SSW          4      4      0      0      0      0      8
 
SW          9      1      0      0      0      0      10 WSW        14      2      1      0      0      0      17
 
W          16      10      0      0      0      0      26
 
WNW          9      6      0      0      0      0      15
 
NW          5      1      0      0      0      0      6 NNW          4      4      0      0      0      0      8
 
Variable      0      0      0      0      0      0      0
 
Total      106      30      1      0      0      0    137
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  48                            Peach Bottom Atomic Power Station Period of Record: April
- June 2018          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          0      0 0      0      0      0      0 NE          1      0      0      0      0      0      1 ENE          1      0      0      0      0      0      1 E          4      0      0      0      0      0      4 ESE          9      0      0      0      0      0      9
 
SE          0      0      0      0      0      0      0 SSE          1      0      0      0      0      0      1
 
S          2      0      0      0      0      0      2
 
SSW          0      0      0      0      0      0      0
 
SW          2      0      0      0      0      0      2 WSW          6      6      0 0      0      0      12
 
W          4      4      0      0      0      0      8
 
WNW          2      0      0      0      0      0      2
 
NW          0      0      0      0      0      0      0 NNW          1      0      0      0      0      0      1
 
Variable      0      0      0      0      0      0      0
 
Total      35      10      0      0      0      0      45 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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  49                            Peach Bottom Atomic Power Station     
 
Period of Record: April
- June 2018          Stability Class
- Extremely Unstable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N          0       0       0       0       0       0       0
N           0        3        3        1        0        0        7 NNE           0       7        2        0        0       0         9 NE          0       1        1        0         0       0         2 ENE          1        3        0       1         0        0        5 E            2        5        0        0        0        0        7 ESE          0       12        2        0        0        0      14 SE          0       1        4        1        1        0        7 SSE          0       1        0       1         0        0        2 S            0       3       0        4        1        0        8 SSW          0        0        2       5        1        0        8 SW          0        0        0        3        0        0        3 WSW          0       0       1        0         1        0         2 W            0        0        1        1        1       0        3 WNW          0        0        4        5        3        0       12 NW          0       0        1        2        0       0         3 NNW           0        3        3        5        1        0      12 Variable       0       0        0        0        0       0         0 Total        3       39       24       29        9        0     104 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:                5 51
 
NNE          0 1      0      0       0       0       1 NE          0       3       2       0       0       0       5 ENE          0       2       1      0       0       0       3 E           0      2       0       0       0       0      2 ESE          1       1      6       0       0       0       8


SE          0      0      0      6      0      0      6 SSE          0      0      0      0      0      0      0
Peach Bottom Atomic Power Station           Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 Stability Class - Neutral - 316Ft-33Ft Delta-T (F)
 
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        1      9      9      6      0      0      25
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   50                            Peach Bottom Atomic Power Station Period of Record: April  
- June 2018           Stability Class  
- Moderately Unstable
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18     19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----     -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N           0       1       0      0      0      0      1
N           6      21       29        9        1       0      66 NNE           9       16       19        6        0       0      50 NE          7       20       14        3         0       0      44 ENE           5       32       21        13        1       0      72 E          13       26       38        28       18        0     123 ESE           5       21       32        18        6        2      84 SE           2      32       36        16        5        1       92 SSE          4      16       18        17        0       0      55 S           1       27       34        34        7        0     103 SSW           0      17       25        19        0       0      61 SW           4        4       17        17        2        0      44 WSW           1        4       13        15        2        0      35 W           2        7       17        25       14        1       66 WNW           1        3        7        48       27        11       97 NW           1       12       27        34       26        3      103 NNW          2       21       42        46        9        0     120 Variable       0       0       0         0         0       0         0 Total        63      279    389        348     118        18    1215 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:                  5 52
 
NNE 0       4      2       0       0      0       6 NE          0       3       0      0      0       0      3 ENE         0       1      3       1       0      0      5 E          0       1       0       0       0      0      1
 
ESE         0       3       2      0      1      0      6
 
SE         0      0      2      2       0      0       4 SSE          0       0      0      0       0       0      0
 
S           0       0       0       2      1      0      3
 
SSW         0      0      0       0       1      0      1
 
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      13      9      5      3      0      30 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:    5
Peach Bottom Atomic Power Station           Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 Stability Class - Slightly Stable - 316Ft-33Ft Delta-T (F)
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   51                            Peach Bottom Atomic Power Station Period of Record: April  
- June 2018           Stability Class  
- Slightly Unstable
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
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      13        2        0        0      28 NNE          0        8      26        1        0        0      35 NE          0        5      11        2        0        0      18 ENE          3      13        7        2        0        0      25 E            4      16      12        9        1        0      42 ESE          1      15      16        4        0        0      36 SE          2      19      14        1        0        0      36 SSE          2      22      28        15        0        0      67 S            2      22      11        14        2        0      51 SSW          5      21      37        21        0        0      84 SW          3      15      20        10        1        0      49 WSW          1        7        8        19        2        0      37 W            1        3        5        14        4        0      27 WNW          1        2        5        21        7        0      36 NW          1        5      13        24        3        0      46 NNW          0        8      15        17        1        0      41 Variable      0        0        0        0        0        0        0 Total        27      193    241        176      21        0      658 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:                  5 53


Wind            Direction    1
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June       2018 Stability Class - Moderately Stable - 316Ft-33Ft Delta-T (F)
-3    4-7    8-12  13-18  19-24    > 24  Total
            ---------  -----  -----  -----  -----  -----  -----  -----
N          0      3      3      1      0      0      7
 
NNE          0      7      2      0      0      0      9 NE          0      1      1      0      0      0      2 ENE          1      3      0      1      0      0      5 E          2      5      0      0      0      0      7
 
ESE          0      12      2      0      0      0      14 SE          0      1      4      1      1      0      7 SSE          0      1      0      1      0      0      2
 
S          0      3      0      4      1      0      8
 
SSW          0      0      2      5      1      0      8
 
SW          0      0      0      3      0      0      3 WSW          0      0      1      0      1      0      2
 
W          0      0      1      1      1      0      3
 
WNW          0      0      4      5      3      0      12
 
NW          0      0      1      2      0      0      3 NNW          0      3      3      5      1      0      12
 
Variable      0      0      0      0      0      0      0
 
Total        3      39      24      29      9      0    104
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   52                            Peach Bottom Atomic Power Station Period of Record: April  
- June 2018                 Stability Class  
- Neutral - 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----
N           0        1        2        0        0        0        3 NNE           1       0        0        0         0       0         1 NE           2        2        1        0        0       0         5 ENE           0        2        0        0        0        0         2 E           0       5       2       0        0        0        7 ESE          0        3        2       0        0        0        5 SE          1       2        0        0        0        0        3 SSE           3        2        0        0        0       0         5 S           2        0        1       0        0        0         3 SSW           2        5        8        1        0       0      16 SW           1        4       8        1        0        0       14 WSW           1       4       2       0        0        0         7 W           0        2        2        5        0        0        9 WNW           0        1        3        4        2       0       10 NW          1        1        7       4        0        0       13 NNW          1       3        4        1         0        0        9 Variable       0        0        0        0        0        0        0 Total        15      37      42       16        2        0     112 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:                5 54
N          6      21      29      9      1       0     66
 
NNE          9      16      19      6      0       0     50 NE         7      20      14      3      0       0     44 ENE         5      32      21      13      1      0     72 E         13      26      38      28      18      0     123
 
ESE          5     21      32      18      6      2     84
 
SE          2     32      36      16      5       1     92 SSE         4      16      18      17      0       0 55              S           1     27      34      34      7      0     103
 
SSW         0     17      25      19      0      0      61
 
SW         4      4      17      17      2      0      44 WSW 1       4     13      15      2       0     35
 
W          2      7     17      25      14       1     66
 
WNW          1      3       7     48      27      11      97


NW          1      12      27      34      26      3    103 NNW          2      21      42      46      9      0    120
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June       2018 Stability Class - Extremely Stable - 316Ft-33Ft Delta-T (F)
 
Variable      0      0      0      0      0      0      0
 
Total      63    279    389    348    118      18    1215 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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   53                            Peach Bottom Atomic Power Station Period of Record: April  
- June 2018           Stability Class  
- Slightly Stable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----
N           1        0        0        0        0        0        1 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        0        0        0        0        0 ESE          0        0        0        0        0        0        0 SE          0        0        0        0        0        0        0 SSE          0        0        0        0        0        0        0 S            0        0        0        0        0        0        0 SSW           0        0        1       0        0        0        1 SW          0        0        6        0        0        0        6 WSW          1        1      11        1        0        0       14 W            0        0        1        1        1        0        3 WNW          0        2       1        2        1        0        6 NW          0        3        0        0        0        0        3 NNW          1        0        0        0        0        0        1 Variable      0        0        0        0        0        0        0 Total        3        6       20        4        2        0      35 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:                5 Peach Bottom Atomic Power Station 55
N          1     12      13       2      0      0     28


NNE          0      8     26       1      0      0      35
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Period of Record: July - September 2018 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            6      14        0        0        0        0      20 NNE           7      17        0        0        0        0      24 NE         15        1        0        0        0        0      16 ENE          13        1        0        0        0        0      14 E          14        0        0        0        0        0      14 ESE          4        5        0        0        0        0        9 SE          3      10        0        0        0        0      13 SSE          1      23        8       0        0        0       32 S            0        4        5        0        0        0        9 SSW          0        2        5        0        0        0        7 SW          0        2        2        0        0        0        4 WSW          0        1        1        0        0        0        2 W            0        1        0        0        0        0        1 WNW          0        0        0        0        0        0        0 NW          0        2        0        0        0        0        2 NNW          0        1       2        0        0        0        3 Variable       0       0        0        0        0        0        0 Total        63      84       23        0        0        0      170 Hours of calm in this stability class:            0 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                1 56


NE          0      5      11       2       0      0     18 ENE          3     13       7       2       0      0      25
Peach Bottom Atomic Power Station            Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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            5      19        0        0        0        0      24 NNE          13        8        0        0        0        0      21 NE           9        0        0        0        0        0        9 ENE         14        0        0        0        0        0      14 E            6        0        0        0        0        0        6 ESE          1        1        0        0        0        0        2 SE          3        2        2        0        0        0        7 SSE          1      15        3        0        0        0      19 S            1       10        7        0        0        0       18 SSW          0      12        6        0        0        0       18 SW          0        2        2        0        0        0        4 WSW          0        2        1        0        0        0        3 W            0        2        0        0        0        0        2 WNW          0        3        0        0        0        0        3 NW          0        1        1        0        0        0        2 NNW          2       20        18        0        0        0       40 Variable       0       0        0        0        0        0        0 Total        55       97        40        0        0        0      192 Hours of calm in this stability class:            0 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                  1 57


E          4      16     12       9      1      0     42
Peach Bottom Atomic Power Station            Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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            4        5        0        0        0        0        9 NNE          4        6        0        0        0        0      10 NE          4        0        0        0        0        0        4 ENE          7        0        0        0        0        0        7 E            3        0        0        0        0        0        3 ESE          2        0        0        0        0        0        2 SE          0        1        0        0        0        0        1 SSE          0        5        6        0        0        0       11 S            1        9         3        0        0        0       13 SSW          2        4        1        0        0        0        7 SW          0        2        0        0        0        0        2 WSW          0        2        1        0        0        0        3 W            0        3        0        0        0        0        3 WNW          0        3        0        0        0        0        3 NW          0        1        0        0        0        0        1 NNW          3      10        3        0        0        0      16 Variable      0        0        0        0        0        0        0 Total        30       51        14        0         0        0      95 Hours of calm in this stability class:            0 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                  1 58


ESE         1      15     16      4      0      0      36
Peach Bottom Atomic Power Station            Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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          52      24        11        0        0        0      87 NNE          44      27        0        0        0        0      71 NE         40        1         0        0        0        0      41 ENE          28        0        0        0        0        0      28 E          23        0        0        0        0        0      23 ESE          9        5        0        0        0        0      14 SE          6      21        9        0        0        0      36 SSE          7      60        51        0        0        0     118 S          10      49        12        0        0        0      71 SSW          9      23        0        0        0        0      32 SW          5        9        4        0        0        0      18 WSW          6      15         3        0        0        0      24 W            4      16         1        0        0        0      21 WNW          9      26        2        0        0        0      37 NW          14       13        4       0        0        0      31 NNW          23       44        14        0        0        0       81 Variable       0       0        0        0        0        0        0 Total      289     333      111        0        0        0      733 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:                  1 59


SE          2      19     14       1      0      0     36 SSE         2      22      28      15       0      0     67              S           2     22      11      14      2       0      51
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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          40      23        1        0        0        0      64 NNE          47      19       1        0        0        0       67 NE          29        1       0        0        0        0      30 ENE          21        0        0        0        0        0      21 E          32        5        0        0        0        0       37 ESE          17        3        0        0        0        0      20 SE          19        8        0       0        0        0      27 SSE          29      12        1        0        0        0      42 S          36       20        0        0        0        0      56 SSW          30        7        0        0        0        0      37 SW         20       10        3        0        0        0      33 WSW          30      20        1        0         0        0      51 W           28      21        2       0        0        0      51 WNW          26      14       0        0        0        0      40 NW          36      28        1        0        0        0      65 NNW          31      25        3        0        0        0      59 Variable       0        0        0        0        0        0        0 Total      471      216       13        0        0        0      700 Hours of calm in this stability class:          29 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                1 60


SSW          5     21      37      21       0      0      84
Peach Bottom Atomic Power Station            Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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            4        0        0        0        0        0        4 NNE          3        0        0        0        0        0        3 NE          4        0        0        0        0        0        4 ENE          3        0        0        0        0        0        3 E            6        0        0        0        0        0        6 ESE          2        0        0        0        0        0        2 SE          0        0        0        0        0        0        0 SSE          4        0        0        0        0        0        4 S            5        1        0        0        0        0        6 SSW          16        1        0        0        0        0      17 SW          19        0        0        0        0        0      19 WSW          43        5        0        0        0        0      48 W          45        4        0        0        0        0      49 WNW          23        1        0        0        0        0      24 NW          14        5         0        0        0        0      19 NNW          8        2        0        0        0        0      10 Variable       0       0        0        0        0        0        0 Total       199      19        0        0        0        0      218 Hours of calm in this stability class:            22 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                  1 61


SW          3      15     20      10      1       0     49 WSW          1       7       8      19       2       0     37
Peach Bottom Atomic Power Station            Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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        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            1        0        0        0        0        0        1 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        0        0        0        0        0        1 SW          4        0        0        0        0        0         4 WSW          17      11        0        0        0        0      28 W            6        3        0        0        0        0        9 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        29       14        0        0        0        0       43 Hours of calm in this stability class:            2 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                  1 62


W          1      3      5      14      4      0      27
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 Stability Class - Extremely Unstable - 316Ft-33Ft Delta-T (F)
 
WNW          1      2      5      21      7      0      36
 
NW          1      5      13      24      3      0      46 NNW          0      8      15      17      1      0      41
 
Variable      0      0      0      0      0      0      0
 
Total      27    193    241    176      21      0    658
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   54                            Peach Bottom Atomic Power Station
 
Period of Record: April
- June  2018 Stability Class  
- Moderately Stable
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----    -----    -----    -----     -----
            ---------  -----   -----  -----  -----  -----  -----   -----                  N          0      1      2      0      0      0      3
N           0       0       0       0         0       0         0 NNE           0       0       0       0         0       0         0 NE           0       0       2        0        0       0        2 ENE           0       3       1       1        0       0        5 E           0       5        0       0         0       0         5 ESE          0       3       8       0         0       0      11 SE          0       0       0       0        0       0        0 SSE          0       0       0       0        0       0        0 S           0       0       0       0        0       0        0 SSW          0       0       0       0        0       0        0 SW          0       0       0       0        0       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      11       11        1        0       0      23 Hours of calm in this stability class:           0 Hours of missing wind measurements in this stability class:               0 Hours of missing stability measurements in all stability classes:                 1 63
 
NNE          1      0      0      0      0      0      1 NE          2      2      1      0      0      0      5 ENE          0      2      0      0      0      0      2 E          0 5      2      0      0      0      7
 
ESE          0      3      2      0      0      0      5
 
SE          1      2      0      0      0      0      3 SSE          3      2      0      0      0      0      5              S          2      0      1      0      0      0      3
 
SSW          2      5      8      1      0      0      16
 
SW          1      4      8      1      0      0      14 WSW          1      4      2      0      0      0      7
 
W          0      2      2      5      0      0      9
 
WNW          0      1      3      4      2      0      10
 
NW          1      1 7      4      0      0      13 NNW          1      3      4      1      0      0      9
 
Variable      0      0      0      0      0      0      0
 
Total      15      37      42      16      2      0    112      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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  55                            Peach Bottom Atomic Power Station Period of Record: April
- June  2018 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           1      0       0       0       0       0 1
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       0       0       0       0       0
 
ESE          0      0      0      0      0      0      0
 
SE          0      0      0      0      0      0      0 SSE          0      0      0      0      0      0      0 S           0       0       0      0      0      0      0
 
SSW          0      0      1      0      0      0      1
 
SW          0      0      6      0      0      0      6 WSW          1      1      11      1      0      0      14
 
W          0      0      1      1      1      0      3
 
WNW          0      2       1      2      1      0      6
 
NW          0      3      0      0      0      0      3 NNW          1      0      0      0      0      0      1
 
Variable      0      0      0      0      0      0      0
 
Total       3      6      20      4      2      0      35      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:    5
 
Peach Bottom Atomic Power Station Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  56                        Period of Record: July
- September 2018 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          6      14      0      0      0      0      20 NNE          7      17      0       0      0      0      24
 
NE         15      1      0       0      0       0      16 ENE         13      1      0      0      0      0      14 E          14      0      0      0      0      0      14
 
ESE          4      5      0      0      0      0      9 SE          3      10      0      0      0      0      13 SSE          1      23      8 0      0      0      32 S          0      4      5      0      0      0      9 SSW          0      2       5      0      0      0      7
 
SW          0      2      2      0      0      0      4 WSW          0      1      1      0      0      0      2
 
W           0       1      0      0      0      0      1
 
WNW          0      0      0      0      0      0      0
 
NW          0      2      0      0      0      0      2 NNW          0      1      2      0      0      0      3
 
Variable      0      0      0      0      0      0      0
 
Total      63      84      23      0      0      0    170
 
Hours of calm in this stability class:    0 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    1
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  57                            Peach Bottom Atomic Power Station Period of Record: July
- September 2018 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          5      19      0      0      0      0      24 NNE         13      8      0       0      0      0      21 NE          9      0      0      0      0      0       9 ENE         14      0      0      0      0      0      14
 
E           6      0       0       0       0       0       6
 
ESE         1      1      0      0      0      0      2
 
SE          3      2      2      0      0      0      7 SSE          1      15 3      0      0      0      19 S           1      10      7      0       0      0      18
 
SSW          0      12      6      0      0      0      18 SW          0      2      2      0      0      0      4              WSW          0      2      1      0      0      0      3
 
W          0      2      0      0      0      0      2
 
WNW          0      3      0      0      0      0      3
 
NW          0      1      1      0      0      0      2 NNW          2      20      18      0      0      0      40
 
Variable      0      0      0      0      0      0      0
 
Total      55      97      40      0      0      0    192 Hours of calm in this stability class:    0 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    1
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  58                            Peach Bottom Atomic Power Station Period of Record: July
- September 2018 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          4      5      0       0       0      0      9
 
NNE          4      6      0      0      0      0      10
 
NE          4      0      0      0      0      0      4 ENE          7      0      0      0      0      0      7 E          3      0      0      0      0      0      3
 
ESE          2      0      0      0      0      0      2
 
SE         0      1      0      0      0      0      1 SSE          0 5      6      0      0      0      11 S           1      9      3      0       0       0     13
 
SSW          2      4      1      0      0      0      7
 
SW          0      2      0      0      0      0      2              WSW          0      2      1      0      0      0       3
 
W          0      3      0      0      0      0      3
 
WNW          0      3      0      0      0      0      3
 
NW          0      1      0      0      0      0      1 NNW          3      10      3      0      0      0      16
 
Variable      0      0      0      0      0      0      0
 
Total      30      51 14      0      0      0      95 Hours of calm in this stability class:    0 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    1
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  59                            Peach Bottom Atomic Power Station Period of Record: July
- September 2018 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          52      24      11 0      0      0      87
 
NNE         44      27      0       0      0      0     71 NE         40      1      0      0      0      0      41 ENE        28      0      0      0      0      0      28
 
E          23      0      0      0      0      0      23
 
ESE          9      5      0      0      0      0      14
 
SE          6      21      9      0      0      0     36 SSE         7      60      51      0      0      0    118 S          10      49      12      0      0      0      71
 
SSW          9      23      0      0      0      0      32 SW          5      9      4      0 0      0      18 WSW          6      15      3      0      0      0      24
 
W           4      16      1      0       0       0     21
 
WNW          9      26      2      0      0      0     37 NW         14      13      4      0       0       0      31 NNW         23      44      14      0       0      0      81
 
Variable      0      0      0      0      0      0      0
 
Total      289    333    111      0      0      0    733 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:    1
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  60                            Peach Bottom Atomic Power Station Period of Record: July
- September 2018 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          40      23      1      0       0       0     64
 
NNE        47      19      1      0      0       0      67 NE         29      1      0       0      0      0     30 ENE         21      0       0       0       0       0 21 E          32      5      0      0      0      0      37
 
ESE         17      3      0       0      0      0     20 SE         19      8      0       0       0       0     27 SSE 29      12      1      0      0       0      42 S          36      20      0      0      0      0      56
 
SSW         30      7      0       0      0      0     37 SW         20      10      3      0       0      0      33 WSW         30      20      1      0       0       0     51
 
W          28      21      2      0       0      0      51
 
WNW         26      14      0       0       0      0      40 NW         36      28      1      0       0      0      65 NNW        31      25      3      0      0      0      59
 
Variable      0      0      0      0      0      0      0
 
Total      471 216      13      0      0      0    700 Hours of calm in this stability class:    29 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    1
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  61                            Peach Bottom Atomic Power Station Period of Record: July
- September 2018 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          4      0       0       0       0       0       4
 
NNE          3      0       0       0      0      0      3
 
NE          4      0      0      0      0      0      4 ENE          3      0      0      0      0 0      3 E           6      0       0       0       0       0       6
 
ESE          2      0       0       0      0      0      2
 
SE          0      0      0      0      0      0      0 SSE          4      0      0      0      0      0      4 S           5      1      0       0       0       0       6
 
SSW         16      1      0       0      0       0      17 SW         19      0       0       0       0       0     19 WSW         43      5      0       0       0      0     48
 
W          45      4      0       0       0      0     49
 
WNW         23      1      0       0      0       0 24              NW         14      5      0       0      0      0      19 NNW          8      2      0      0      0      0      10
 
Variable      0      0      0      0      0      0      0
 
Total     199      19      0      0       0      0    218 Hours of calm in this stability class:    22 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    1
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  62                            Peach Bottom Atomic Power Station Period of Record: July
- September 2018 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      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          1       0      0      0      0      0      1
 
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      0      0      0      0      0      1
 
SW          4      0 0      0      0      0      4 WSW         17      11      0       0      0      0      28
 
W          6      3      0      0      0      0      9
 
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      29      14      0      0      0      0      43 Hours of calm in this stability class:     2 Hours of missing wind measurements in this stability class:     0 Hours of missing stability measurements in all stability classes:     1
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  63                           Peach Bottom Atomic Power Station Period of Record: July
- September 2018 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      2      0      0      0      2 ENE          0      3      1      1      0      0      5
 
E          0      5      0      0      0      0      5
 
ESE          0      3      8      0      0      0      11
 
SE          0      0      0      0      0      0      0 SSE          0      0      0      0      0      0      0 S          0      0      0      0      0      0      0
 
SSW          0      0      0      0      0      0      0
 
SW          0      0      0      0      0      0      0 WSW          0      0      0      0      0      0      0


W          0      0      0      0      0      0      0
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 Stability Class - Moderately Unstable - 316Ft-33Ft Delta-T (F)
 
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      11      11      1      0      0      23 Hours of calm in this stability class:    0 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    1 Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   64                            Peach Bottom Atomic Power Station Period of Record: July  
- September 2018 Stability Class  
- Moderately Unstable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----
N           0       2       1       0         0       0         3 NNE           0       4       0       0         0       0         4 NE           0       1       0       0         0       0         1 ENE           0       1       0       0         0       0         1 E           0       3       0       0         0       0         3 ESE           0       6       4       0        0       0      10 SE           0       0       6       0         0       0         6 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       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       18       11       0        0        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:                1 64
N           0       2       1       0       0       0       3
 
NNE         0       4       0       0       0       0       4
 
NE         0       1       0       0       0       0       1 ENE         0       1 0       0       0       0       1
 
E           0       3       0       0       0       0       3
 
ESE         0       6       4       0       0      0      10
 
SE         0       0       6       0       0       0       6             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       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     18     11       0      0       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:    1
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 Stability Class - Slightly Unstable - 316Ft-33Ft Delta-T (F)
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   65                            Peach Bottom Atomic Power Station Period of Record: July  
- September 2018 Stability Class  
- Slightly Unstable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N           0       0       4       0       0       0       4
N           0       0       4       0         0       0         4 NNE           1       4       1       0         0       0         6 NE           2       5       0       0         0       0         7 ENE           1       5       0       0         0       0         6 E           0       5       0       0         0       0         5 ESE           0       2       2       1         0       0         5 SE           0       2       10       0        0       0      12 SSE           0       0       1       0         0       0         1 S           0       2       3       0         0       0         5 SSW           0       0       4       1         0       0         5 SW           0       1       2       0         0       0         3 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       1         0       0         1 Variable       0       0       0       0         0       0         0 Total         4       26       27       3         0        0      60 Hours of calm in this stability class:           0 Hours of missing wind measurements in this stability class:               0 Hours of missing stability measurements in all stability classes:                 1 65
 
NNE         1       4       1       0       0       0       6
 
NE         2       5       0       0       0       0       7 ENE         1 5       0       0       0       0       6
 
E           0       5       0       0       0       0       5
 
ESE         0       2       2       1       0       0       5
 
SE         0      2      10       0       0      0      12             SSE         0       0       1       0       0       0       1
 
S           0       2       3       0       0       0       5
 
SSW         0       0       4       1       0       0       5
 
SW         0       1       2       0       0       0       3 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       1       0       0       1
 
Variable     0       0       0       0       0       0       0
 
Total       4     26     27       3       0      0      60
 
Hours of calm in this stability class:     0 Hours of missing wind measurements in this stability class:     0 Hours of missing stability measurements in all stability classes:     1
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  66                            Peach Bottom Atomic Power Station Period of Record: July
- September 2018 Stability Class
- Neutral - 316Ft-33Ft Delta
-T (F)         


Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 Stability Class - Neutral - 316Ft-33Ft Delta-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18     19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----     -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N           9     32     13     12       1      0      67
N           9       32       13       12         1       0       67 NNE           5       24       8       14         5       0       56 NE         18       22       14       11         1       0       66 ENE         18       27       24       12         0        0      81 E           12       26       33       13         1       0       85 ESE           7       11       25       27         1       0       71 SE           5       16       35       57         6       0     119 SSE           2       11       32       17         0        0      62 S           1       10       51       27         0        0      89 SSW           1       8       44         9         0        0      62 SW           1       12       14         3         0        0      30 WSW           2       9       17         2         1       0       31 W           1       5       23         1         0        0      30 WNW           2       6       23         5         0        0      36 NW           3       18       15       13         0        0      49 NNW           6       28       48       19        0        0     101 Variable       0       0        0        0        0        0        0 Total        93      265    419        242       16        0    1035 Hours of calm in this stability class:            0 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                  1 66
 
NNE         5     24       8     14       5      0      56
 
NE         18     22     14     11       1      0      66 ENE         18     27     24     12       0      0      81
 
E         12     26     33     13       1      0      85
 
ESE         7     11     25     27       1      0      71
 
SE         5     16     35     57 6       0     119 SSE         2     11     32     17       0      0      62
 
S           1     10     51     27       0      0      89
 
SSW         1      8      44       9       0      0      62
 
SW         1     12     14       3       0      0      30 WSW         2      9      17       2       1      0      31
 
W           1      5      23       1       0      0      30
 
WNW         2      6      23       5       0      0      36 NW         3     18     15     13       0      0      49 NNW         6     28     48      19       0      0     101


Variable      0      0      0      0      0 0      0 
Peach Bottom Atomic Power Station           Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 Stability Class - Slightly Stable - 316Ft-33Ft Delta-T (F)
 
Total      93    265    419    242      16      0    1035
 
Hours of calm in this stability class:    0 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    1
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   67                            Peach Bottom Atomic Power Station Period of Record: July  
- September 2018 Stability Class  
- Slightly Stable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18     19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----     -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N           3     17     33     14       0      0      67
N           3       17       33       14         0        0      67 NNE           5       12       12         4         0        0      33 NE           1       13       9         6         1       3       33 ENE           6       37       23         1         3       2       72 E           2       22       17       18         0        0      59 ESE           7       13       23         6         2       0       51 SE           6       11       10         3         0        0      30 SSE           7       18       20         6         0        0      51 S           7       29       43       16         1       0       96 SSW           4       24       36       11         0        0      75 SW           3       16       16         2         2       0       39 WSW           2       15       14         6         1       0       38 W           4       10       21       20         0        0      55 WNW           6       8       9         5         1       0       29 NW           4       11       10       22         0        0      47 NNW           3       9       19       18         0        0      49 Variable       0       0       0         0         0       0         0 Total       70     265    315       158       11         5     824 Hours of calm in this stability class:            0 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                  1 67
 
NNE         5     12     12       4       0      0      33
 
NE         1     13       9       6       1      3      33 ENE         6     37     23       1       3      2      72
 
E           2     22     17     18       0      0      59
 
ESE         7     13     23       6       2      0      51
 
SE         6     11     10       3       0      0      30 SSE         7     18     20       6       0      0      51
 
S           7     29     43     16       1      0      96
 
SSW         4     24     36     11       0      0      75
 
SW         3     16     16       2       2      0      39 WSW         2     15     14       6       1      0      38
 
W           4     10     21     20       0      0      55
 
WNW         6       8       9       5       1      0      29 NW         4     11     10     22       0      0      47 NNW         3      9      19     18       0      0      49
 
Variable     0       0       0       0       0       0       0
 
Total       70     265    315     158     11       5     824


Hours of calm in this stability class:    0 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    1
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 Stability Class - Moderately Stable - 316Ft-33Ft Delta-T (F)
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   68                            Peach Bottom Atomic Power Station Period of Record: July  
- September 2018 Stability Class  
- Moderately Stable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N           3       5       2       0       0      0      10
N           3       5       2       0        0       0      10 NNE           2       1       1       0         0       0         4 NE           3       1       0       0         0       0         4 ENE           4       1       0       0         0       0         5 E           2       0       1       0         0       0         3 ESE           2       2       0       0         0       0         4 SE           1       6       3       0        0       0      10 SSE           0       5       4       0         0       0         9 S           2       9       8       0        0       0      19 SSW           2       10       8       0        0       0      20 SW           2       12       4       1         0        0      19 WSW           0       10       8       5         0        0      23 W           1       9       16       2         0        0      28 WNW           2       5       6       1         0        0      14 NW         11       6       14       5         0        0      36 NNW           4       6       5       2         0        0      17 Variable       0       0       0       0         0       0         0 Total       41       88       80       16         0       0     225 Hours of calm in this stability class:           0 Hours of missing wind measurements in this stability class:               0 Hours of missing stability measurements in all stability classes:                 1 68
 
NNE         2       1       1       0       0       0       4
 
NE         3       1       0       0       0       0       4
 
ENE         4       1       0       0       0       0       5
 
E           2       0       1       0       0       0       3
 
ESE         2       2       0       0       0       0       4
 
SE         1       6       3       0       0      0      10 SSE         0       5       4       0       0       0       9
 
S           2       9       8       0       0      0      19
 
SSW         2     10       8       0       0      0 20               SW         2     12       4       1       0      0      19 WSW         0     10       8       5       0      0      23
 
W           1      9      16       2       0      0      28
 
WNW         2       5       6       1       0      0      14 NW         11      6      14       5       0      0      36 NNW         4       6       5       2       0      0      17
 
Variable     0       0       0       0       0       0       0
 
Total      41      88     80     16       0       0     225
 
Hours of calm in this stability class:     0 Hours of missing wind measurements in this stability class:     0 Hours of missing stability measurements in all stability classes:     1


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   69                            Peach Bottom Atomic Power Station Period of Record: July  
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 Stability Class - Extremely Stable - 316Ft-33Ft Delta-T (F)
- September 2018 Stability Class  
- Extremely Stable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------  -----     -----  -----     -----   -----   -----     -----
            ---------  -----   -----  -----   -----   -----   -----   -----                 N           0       2       0       0       0       0       2
N           0       2       0       0         0       0         2 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           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           0       0       0       0         0       0         0 SW           0       0       1       0         0       0         1 WSW           0       0       1       0         0       0         1 W           0       0       2       0         0       0         2 WNW           0       0       0       0         0       0         0 NW           0       0       1       0         0       0         1 NNW           0       3       0       0         0       0         3 Variable       0        0        0        0        0        0        0 Total        0       6        5        0         0       0      11 Hours of calm in this stability class:            0 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                1 Peach Bottom Atomic Power Station 69
 
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           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         0       0       0       0       0 0       0               SW         0       0       1       0       0       0       1 WSW         0       0       1       0       0       0       1
 
W           0       0       2       0       0       0       2
 
WNW         0       0       0       0       0       0       0
 
NW         0       0       1       0       0       0       1 NNW         0       3       0       0       0       0       3
 
Variable     0       0       0       0       0      0       0


Total        0       6      5       0      0       0     11
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Period of Record: October - December 2018 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        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       0        0        0        0        2 E            6        1        0        0        0        0        7 ESE          2        4        0        0        0        0        6 SE          0        4        0        0        0        0        4 SSE          0        0        0        0        0        0        0 S            0        1        2        0        0        0        3 SSW          0        0        2        0        0        0        2 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        3        0        0        0        3 Variable       0        0        0        0        0        0        0 Total        10       10        7        0        0        0      27 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:                5 70


Hours of calm in this stability class:     0 Hours of missing wind measurements in this stability class:     0 Hours of missing stability measurements in all stability classes:     1
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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        0        3        0        0        0        3 NNE          1        0        0        0        0        0        1 NE          0        0        0        0        0        0        0 ENE          8        0        0        0        0        0        8 E            5        1        0        0        0        0        6 ESE          4        3        0        0        0        0        7 SE          0        6        0        0        0        0        6 SSE          0        1        0        0        0        0        1 S            0        7        4        0        0        0      11 SSW          0        2        4        0        0        0        6 SW          0        1        2        0        0        0        3 WSW          0        1        5        0        0        0        6 W            0        1        5        1        0        0        7 WNW          0        2        2        2        0        0        6 NW          0        1        9        0        0        0      10 NNW          0        6      24        9        0        0      39 Variable      0        0        0        0        0        0        0 Total        18      32      58      12        0        0      120 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:                 5 71


Peach Bottom Atomic Power Station Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   70                      Period of Record: October  
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 Stability Class - Slightly Unstable - 150Ft-33Ft Delta-T (F)
- December 2018           Stability Class  
Winds Measured at 33 Feet Wind Speed (in mph)
- Extremely Unstable  
Wind Direction    1-3    4-7    8-12    13-18    19-24      > 24    Total
- 150Ft-33Ft Delta
            ---------  -----    -----  -----    -----    -----    -----    -----
-T (F)
N            0        1        0        0        0        0        1 NNE          1        1        1        0        0        0        3 NE          3        0        0        0        0        0        3 ENE          1        0        0        0        0        0        1 E            3        0        0        0        0        0        3 ESE          1        0        0        0        0        0        1 SE          2        1        2        0        0        0        5 SSE          0        3        3        0        0        0        6 S            2        4        5        0        0        0      11 SSW          0        1        2        0        0        0        3 SW          0        2        1        0        0        0        3 WSW          0        3        2        0        0        0        5 W            0        2      10        1        0        0      13 WNW          0        8      13      11        0        0      32 NW          0        3        4        1        0        0        8 NNW          0        5      16        4        0        0      25 Variable      0        0        0        0        0        0        0 Total        13      34      59      17        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:                5 72
Winds Measured at 33 Feet


Wind Speed (in mph)
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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          13      26        3        0        0        0      42 NNE          23      23        4        0        0        0      50 NE          27      18        0        0        0        0      45 ENE          22        8        0        0        0        0      30 E          26        5        0        0        0        0      31 ESE          18      16        1        0        0        0      35 SE          15      33      10        3        0        0      61 SSE          23      48        8        1        0        0      80 S          15      34      20        3        0        0      72 SSW          11      24        5        0        0        0      40 SW          10      14        6        0        0        0      30 WSW          8      20        3        0        0        0      31 W            4      39      27        1        0        0      71 WNW          4      39      94      26        0        0      163 NW          7      40      78      14        0        0      139 NNW          5      26      79      14        0        0      124 Variable      0        0        0        0        0        0        0 Total      231      413    338        62        0        0    1044 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:                5 73


Wind           Direction   1
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 Stability Class - Slightly Stable - 150Ft-33Ft Delta-T (F)
-3   4-7    8-12   13-18   19-24   > 24   Total
Winds Measured at 33 Feet Wind Speed (in mph)
            --------- -----   -----  -----   -----   -----   -----   -----                 N          0      0      0      0      0      0      0
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
            ---------   -----   -----  -----     -----   -----   -----     -----
N          14        9        0        0        0        0      23 NNE          4        3        1        0        0        0         8 NE          18       10        0       0        0        0      28 ENE          26       12        0        0        0        0      38 E          31        5        0        0        0        0      36 ESE          27        4        0        0         0        0      31 SE          37      11        2        0        0        0      50 SSE          19       14        0        0        0        0      33 S          19      13        1        0        0        0      33 SSW          14        6        0        0        0        0      20 SW          12      10        0        0        0        0      22 WSW          22      53        1        0        0        0      76 W          21      77      11        0        0        0      109 WNW          14      44        1        0        0        0      59 NW          15      33        2        0        0        0      50 NNW          11      29        2        1        0        0      43 Variable      0        0        0        0        0        0        0 Total      304      333      21        1        0        0      659 Hours of calm in this stability class:            9 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                5 74


NNE          0      0      0      0      0      0      0
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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            4        0        0        0        0        0        4 NNE           4        0        0        0        0        0        4 NE          3        0        0        0        0        0        3 ENE          3        0        0        0        0        0        3 E          11        2        0        0        0        0      13 ESE         18        0        0        0        0        0      18 SE          5        0        0        0        0        0        5 SSE          3        0        0        0        0        0        3 S            6        0        0        0        0        0        6 SSW          3        0        0        0        0        0        3 SW          3        4        0        0        0        0         7 WSW          18       22        0        0        0        0      40 W          28      15        0        0        0        0      43 WNW          9        1        0        0        0        0      10 NW          5        2        0        0        0        0        7 NNW          10        0        0        0        0        0       10 Variable       0       0        0        0        0        0        0 Total      133       46        0        0        0        0      179 Hours of calm in this stability class:          10 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                5 75


NE         0       0       0       0       0       0       0 ENE         2      0      0      0      0       0       2
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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        0        0 NNE          0        0        0        0        0        0        0 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          2       0        0        0        0        0        2 SSE          1        0        0        0        0        0        1 S            0        0        0        0        0        0        0 SSW          0        0        0        0        0        0        0 SW          4        1        0        0        0        0        5 WSW          6        8        0        0        0        0       14 W            3        4        0       0        0        0        7 WNW          1        0        0        0        0        0        1 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        18       13        0        0        0        0      31 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:                5 76


E          6      1      0      0      0      0      7
Peach Bottom Atomic Power Station          Licensee:    Exelon Generation Company, LLC Unit 2 and 3                                                           PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 Stability Class - Extremely Unstable - 316Ft-33Ft Delta-T (F)
 
ESE          2      4      0      0      0      0      6 SE          0      4      0      0      0      0      4 SSE          0      0      0      0      0      0      0 S          0      1      2      0      0      0      3
 
SSW          0      0      2      0 0      0      2
 
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      3      0      0      0      3
 
Variable      0      0      0      0      0      0      0
 
Total      10      10      7      0      0      0      27
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  71                            Peach Bottom Atomic Power Station Period of Record: October
- December 2018           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      0      3      0      0      0      3
 
NNE          1      0      0      0      0      0      1
 
NE          0      0      0      0      0      0      0              ENE          8      0      0      0      0      0      8 E          5      1      0      0      0      0      6
 
ESE          4      3      0      0      0      0      7
 
SE          0      6      0      0      0      0      6 SSE          0      1      0      0      0      0      1
 
S          0      7      4      0      0      0      11
 
SSW          0      2      4      0      0      0      6 SW          0      1      2      0      0      0      3 WSW          0      1      5      0      0      0      6
 
W          0      1      5      1      0      0      7
 
WNW          0      2      2      2      0      0      6
 
NW          0      1      9      0      0      0      10 NNW          0      6      24      9      0      0      39
 
Variable      0      0      0      0      0      0      0
 
Total      18      32      58      12      0      0    120
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  72                            Peach Bottom Atomic Power Station Period of Record: October
- December 2018          Stability Class
- Slightly Unstable
- 150Ft-33Ft Delt a-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      0      0      0      0      1
 
NNE          1      1      1      0      0      0      3
 
NE          3      0      0      0      0      0      3              ENE          1      0      0      0      0      0      1 E          3      0      0      0      0      0      3
 
ESE          1      0      0      0      0      0      1
 
SE          2      1      2      0      0      0      5 SSE          0      3      3      0      0      0      6
 
S          2      4      5      0      0      0      11
 
SSW          0      1 2      0      0      0      3 SW          0      2      1      0      0      0      3 WSW          0      3      2      0      0      0      5
 
W          0      2      10      1      0      0      13 WNW          0      8      13      11      0      0      32
 
NW          0      3      4      1      0      0      8 NNW          0      5      16      4      0      0      25
 
Variable      0      0      0      0      0      0      0
 
Total      13      34      59      17      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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  73                            Peach Bottom Atomic Power Station Period of Record: October
- December 2018                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          13      26      3      0      0      0      42
 
NNE        23      23      4      0      0      0      50 NE        27      18      0      0 0      0      45 ENE        22      8      0      0      0      0      30
 
E          26      5      0      0      0      0      31
 
ESE        18      16      1      0      0      0      35 SE        15      33      10      3      0      0      61 SSE        23      48      8      1      0      0      80 S          15      34      20      3      0      0      72
 
SSW        11      24      5      0      0      0      40 SW        10      14      6      0      0      0      30 WSW          8      20      3      0      0      0      31
 
W          4      39      27      1      0 0      71 WNW          4      39      94      26      0      0    163
 
NW          7      40      78      14      0      0    139 NNW          5      26      79      14      0      0    124
 
Variable      0      0      0      0      0      0      0
 
Total      231    413    338      62      0      0    1044
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  74                            Peach Bottom Atomic Power Station Period of Record: October
- December 2018          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          14      9      0      0      0      0      23
 
NNE          4      3      1      0      0      0      8
 
NE        18      10      0      0      0      0      28 ENE        26      12      0      0      0      0      38
 
E          31      5      0      0      0      0      36
 
ESE        27      4      0      0      0      0      31 SE        37      11      2      0      0      0      50 SSE        19      14      0      0      0      0      33 S          19      13      1      0      0      0      33
 
SSW        14      6      0      0      0      0      20 SW        12      10      0      0      0      0      22 WSW        22      53      1      0      0      0      76
 
W          21      77      11      0      0      0    109
 
WNW        14      44      1      0      0      0      59 NW        15      33      2      0      0      0      50 NNW        11      29      2      1      0      0      43
 
Variable      0      0      0      0      0      0      0
 
Total      304    333      21      1      0      0    659
 
Hours of calm in this stability class:    9 Hours of missing wind measurements in this stability class:    0    Hours of missing stability measurements in all stability classes:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  75                            Peach Bottom Atomic Power Station Period of Record: October
- December 2018          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          4      0      0      0      0      0      4
 
NNE          4      0      0      0      0      0      4
 
NE          3      0      0      0      0      0      3 ENE          3      0      0      0      0      0      3 E          11      2      0      0      0      0      13
 
ESE        18      0      0      0      0      0      18              SE          5      0      0      0      0      0      5 SSE          3      0      0      0      0      0      3
 
S          6      0      0      0      0      0      6
 
SSW          3      0      0      0      0      0      3 SW          3      4      0      0      0      0      7 WSW        18      22      0      0      0      0      40
 
W          28      15      0      0      0      0      43
 
WNW          9      1      0      0      0      0      10
 
NW          5      2      0      0      0      0      7 NNW        10      0      0      0      0      0      10
 
Variable      0      0      0      0      0      0      0
 
Total      133      46      0      0      0      0    179
 
Hours of calm in this stability class:    10 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC  76                            Peach Bottom Atomic Power Station Period of Record: October
- December 2018          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      0      0
 
NNE          0      0      0      0      0      0      0
 
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          2      0      0      0      0      0      2 SSE          1      0      0      0      0      0      1
 
S          0      0      0      0      0      0      0
 
SSW          0      0      0      0      0      0      0 SW          4      1      0      0      0      0      5 WSW          6      8      0      0      0      0      14
 
W          3      4      0      0      0      0      7
 
WNW          1      0      0      0      0      0      1
 
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      18      13      0      0      0      0      31 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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   77                            Peach Bottom Atomic Power Station Period of Record: October  
- December 2018           Stability Class  
- Extremely Unstable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------   -----   -----  -----     -----   -----   -----     -----
            --------- -----   -----  -----   -----   -----   -----   -----                 N           0       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       0       0         0       0         0 ESE           0       0       0       0         0       0         0 SE           0       0       0       0         0       0         0 SSE           0       0       0       0         0       0         0 S           0       0       0       0         0       0         0 SSW           0       0       0       0         0       0         0 SW           0       0       0       0         0       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        0       0       0         0       0         0 Hours of calm in this stability class:            0 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                5 77
 
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       0       0       0       0       0
 
ESE         0       0       0       0       0       0       0
 
SE         0       0       0       0       0       0       0 SSE         0       0       0       0       0       0       0
 
S           0       0       0       0       0       0       0
 
SSW         0       0       0       0       0       0       0 SW         0       0       0       0       0       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       0       0       0       0       0       0


Hours of calm in this stability class:    0 Hours of missing wind measurements in this stability class:    0 Hours of missing stability measurements in all stability classes:    5
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 Stability Class - Moderately Unstable - 316Ft-33Ft Delta-T (F)
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   78                            Peach Bottom Atomic Power Station Period of Record: October  
- December 2018           Stability Class - Moderately Unstable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------   -----   -----  -----     -----   -----   -----     -----
            --------- -----   -----  -----   -----   -----   -----   -----                 N           0       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       0       0         0       0         0 ESE           0       0       1       0         0       0         1 SE           0       0       0       0         0       0         0 SSE           0       0       0       0         0       0         0 S           0       0       0       0         0       0         0 SSW           0       0       0       0         0       0         0 SW           0       0       0       0         0       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       0       1        0         0       0         1 Hours of calm in this stability class:            0 Hours of missing wind measurements in this stability class:                0 Hours of missing stability measurements in all stability classes:                5 78
 
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       0       0       0       0       0
 
ESE         0       0       1       0       0       0       1 SE         0       0       0       0       0       0       0 SSE         0       0       0       0       0       0       0
 
S           0       0       0       0       0       0       0 SSW         0       0       0       0       0       0       0
 
SW         0       0       0       0       0       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      0      1      0      0      0      1
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 Stability Class - Slightly Unstable - 316Ft-33Ft Delta-T (F)
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   79                            Peach Bottom Atomic Power Station Period of Record: October  
- December 2018           Stability Class  
- Slightly Unstable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------   -----   -----  -----     -----   -----   -----     -----
            --------- -----   -----  -----   -----   -----   -----   -----                 N           0       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       1       0       0         0       0         1 ESE           0       2       0       0         0       0         2 SE           0       0       2       0         0       0         2 SSE           0       0       0       0         0       0         0 S           0       0       0       1         0       0         1 SSW           0       0       2       0         0       0         2 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       1         0       0         1 NNW           0       0       0       0         0       0         0 Variable       0       0       0       0         0       0         0 Total         0       3       4       2         0       0         9 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:                 5 79
 
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       1       0       0       0       0       1
 
ESE         0 2       0       0       0       0       2 SE         0       0       2       0       0       0       2 SSE         0       0       0       0       0       0       0
 
S           0       0       0       1       0       0       1 SSW         0       0       2       0       0       0       2
 
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       1       0       0       1 NNW         0       0 0       0       0       0       0
 
Variable     0       0       0       0       0       0       0
 
Total        0      3       4       2       0       0       9
 
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:     5


Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   80                            Peach Bottom Atomic Power Station Period of Record: October  
Peach Bottom Atomic Power Station           Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 Stability Class - Neutral - 316Ft-33Ft Delta-T (F)
- December 2018               Stability Class  
- Neutral - 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18     19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------   -----   -----  -----     -----     -----   -----     -----
            --------- -----   -----  -----   -----   -----   -----   -----                 N           2     10     17     12      0      0     41
N           2       10       17       12         0        0      41 NNE          2       11      14        4        0        0      31 NE          0      10        5        9        6        0      30 ENE          6        8      12        10        1        0      37 E            7      12        8        3        0        0       30 ESE         10      21      12        10        0        0      53 SE          1      25      29        23        2        4      84 SSE          1        7      25        9        1        0      43 S            2       21      34        27      16        0     100 SSW          2        2      24        14         0        0       42 SW          0      10      21        8        1        0      40 WSW          0        8      17        12        1        0      38 W            0        6      19        37      32        3       97 WNW          0       10      27        77      71        19      204 NW          1        9      29        94      38        18      189 NNW          1        5      42        52      12        3      115 Variable       0       0        0        0        0        0        0 Total        35     175    335        401      181        47    1174 Hours of calm in this stability class:            1 Hours of missing wind measurements in this stability class:                3 Hours of missing stability measurements in all stability classes:                  5 80
 
NNE         2      11      14      4       0      0      31


NE          0      10      5      9      6      0      30 ENE          6      8      12      10      1      0      37 E          7      12      8      3      0      0      30
Peach Bottom Atomic Power Station           Licensee:     Exelon Generation Company, LLC Unit 2 and 3                                                            PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 Stability Class - Slightly Stable - 316Ft-33Ft Delta-T (F)
 
ESE        10      21      12      10      0      0      53 SE          1      25      29      23      2      4      84 SSE          1      7      25      9      1      0      43
 
S          2      21      34      27      16      0    100
 
SSW          2      2      24      14      0      0      42
 
SW          0      10      21      8      1      0      40 WSW          0      8      17      12      1      0      38
 
W          0      6      19      37      32      3      97
 
WNW          0      10      27      77      71      19    204
 
NW          1      9      29      94      38      18    189 NNW          1      5      42      52      12      3    115
 
Variable      0      0      0      0      0      0      0
 
Total      35    175    335    401    181      47    1174 Hours of calm in this stability class:    1 Hours of missing wind measurements in this stability class:    3 Hours of missing stability measurements in all stability classes:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   81                            Peach Bottom Atomic Power Station Period of Record: October  
- December 20 18          Stability Class  
- Slightly Stable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18     19-24     > 24   Total
-3   4-7    8-12   13-18   19-24   > 24   Total
            ---------   -----   -----  -----     -----     -----   -----     -----
            --------- -----   -----  -----   -----   -----   -----   -----                 N           1      8      13       4       0      0      26
N           1       8       13         4         0        0      26 NNE           4       8       6         3         0        0      21 NE           0       5       12         3         2       0       22 ENE           3       8       11       11         3       0       36 E           2       13       17         1         0        0      33 ESE           1       11       31         7         1       0       51 SE           2       19       36         8         0       2       67 SSE           0       27       23         7         0        0      57 S           2       20       36       11         1       0       70 SSW           1       11       23         4         0        0      39 SW           1       6       17       20         0        0      44 WSW           1       9       15       18         4       0       47 W           3       8       24       52         3       1       91 WNW           0       10       22       52         4       0       88 NW           0       7       20       37         5       0       69 NNW           2       9       30       15         2       0       58 Variable       0       0       0         0         0       0         0 Total       23     179    336       253       25         3     819 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:                  5 81
 
NNE         4       8       6       3       0      0      21               NE         0      5      12       3       2      0      22 ENE         3      8      11     11       3      0      36 E           2     13     17       1       0      0      33
 
ESE         1     11     31       7       1      0      51 SE         2     19     36       8       0      2      67 SSE         0     27     23       7       0      0      57
 
S           2     20     36     11       1      0      70
 
SSW         1     11     23       4       0      0      39
 
SW         1      6      17     20       0      0      44 WSW         1      9      15     18       4      0      47
 
W           3      8      24     52       3      1      91
 
WNW         0     10     22     52       4      0      88
 
NW         0      7      20     37       5      0      69 NNW         2      9      30     15       2      0      58
 
Variable     0       0       0       0       0       0       0
 
Total       23     179    336     253     25       3     819


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:    5
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 Stability Class - Moderately Stable - 316Ft-33Ft Delta-T (F)
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   82                            Peach Bottom Atomic Power Station Period of Record: October  
- December 2018           Stability Class  
- Moderately Stable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24  Total
-3   4-7    8-12   13-18   19-24   > 24  Total
            ---------   -----   -----  -----     -----   -----   -----     -----
            --------- -----   -----  -----   -----   -----   -----   -----                 N          3      6      2      0      0      0      11
N           3        6        2        0        0        0      11 NNE           0        2        1        0        0        0        3 NE          0        2        0        0        0        0        2 ENE          0        2        0        0        0        0        2 E            0        2        0        0        0        0        2 ESE          0        3        2        1        0        0        6 SE          0        6        7        1        0        0       14 SSE          0        9        9        0        0        0      18 S            0        3        4        0        0        0        7 SSW          3        4        5        0        0        0      12 SW          2        2        2        1        0        0        7 WSW          3        3        4        3        0        0      13 W            0        4      14        6         6        0       30 WNW          2       3      12        7        1        0      25 NW          1        3        6        3        0        0       13 NNW          1        7        2        0        0        0      10 Variable      0        0        0        0        0        0         0 Total        15      61      70       22        7        0      175 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:                5 82


NNE          0      2      1      0      0      0      3              NE          0      2      0      0      0      0      2 ENE          0      2      0      0      0      0      2 E          0      2      0      0      0      0      2
Peach Bottom Atomic Power Station           Licensee:   Exelon Generation Company, LLC Unit 2 and 3                                                          PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 Stability Class - Extremely Stable - 316Ft-33Ft Delta-T (F)
 
ESE          0      3      2      1      0      0      6
 
SE          0      6      7      1      0      0      14 SSE          0      9      9      0      0      0      18
 
S          0      3 4      0      0      0      7
 
SSW          3      4      5      0      0      0      12
 
SW          2      2      2      1      0      0      7 WSW          3      3      4      3      0      0      13 W          0      4      14      6      6      0      30
 
WNW          2      3      12      7      1      0      25
 
NW          1      3      6      3      0      0      13 NNW          1      7      2      0      0      0      10
 
Variable      0      0      0      0      0      0      0
 
Total      15      61      70      22      7      0    175
 
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:    5
 
Peach Bottom Atomic Power Station Unit 2 and 3 Licensee: Exelon Generation Company, LLC PSEG Nuclear, LLC   83                            Peach Bottom Atomic Power Station Period of Record: October - December 2018           Stability Class  
- Extremely Stable  
- 316Ft-33Ft Delta
-T (F)
Winds Measured at 320 Feet Wind Speed (in mph)
Winds Measured at 320 Feet Wind Speed (in mph)
Wind           Direction   1
Wind Direction     1-3     4-7    8-12     13-18   19-24     > 24  Total
-3   4-7    8-12   13-18   19-24   > 24  Total
            ---------   -----   -----  -----     -----   -----   -----     -----
            --------- -----   -----  -----   -----   -----   -----   -----                 N           0       1       0       0       0       0       1
N           0       1       0       0         0       0         1 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           0       0       0       0         0       0         0 ESE           0       0       0       0         0       0         0 SE           0       0       1       0         0       0         1 SSE           0       1       1       1         0       0         3 S           0       2       0       0         0       0         2 SSW           0       0       0       0         0       0         0 SW           0       1       0       0         0       0         1 WSW           0       1       1       0         0       0         2 W           0       0       5       2         0       0         7 WNW           0       1       0       1         0       0         2 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       8       8       4         0        0      20 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:                 5 83}}
 
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           0       0       0       0       0       0       0
 
ESE         0       0       0       0       0       0       0 SE         0       0       1       0       0       0       1 SSE         0       1       1       1       0       0       3
 
S           0 2       0       0       0       0       2
 
SSW         0       0       0       0       0       0       0
 
SW         0       1       0       0       0       0       1 WSW         0       1       1       0       0       0       2 W           0       0       5       2       0       0       7
 
WNW         0       1       0       1       0       0       2
 
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      8       8       4       0      0      20
 
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:     5}}

Revision as of 19:57, 19 October 2019

Annual Radioactive Effluent Release Report 61 January 1, 2018 Through December 31, 2018 and Independent Spent Fuel Storage Installation
ML19119A058
Person / Time
Site: Peach Bottom  Constellation icon.png
Issue date: 04/26/2019
From: Herr M
Exelon Generation Co
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
CCN 19-47
Download: ML19119A058 (84)


Text

~

Exelon Generation April 26, 2019 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001

Subject:

Peach Bottom Atomic Power Station Units 1, 2 and 3 Independent Spent Fuel Storage Installation {ISFSI)

Facility Operation License DPR-12, DPR-44 and DPR-56 NRC Docket 50-171, 50-277 and 50-278 and ISFSI Docket 72-29 Annual Radioactive Effluent Release Report 61 January 1, 2018 through December 31, 2018 Enclosed is the Annual Radioactive Effluent Release Report 61, January 1, 2018 through December 31, 2018 for Peach Bottom Atomic Power Station, Units 1, 2 and 3.

This report is being submitted in compliance with 10 CFR 50.36a(2) and the Technical Specifications of Operating Licenses DPR-44 and DPR-56 and to fulfill the requirements of Offsite Dose Calculation Manual Specifications (ODCMS) 3.10.2. Additionally, this report is submitted to satisfy the annual effluent reporting requirements for the ISFSI required by the ODCM.

The ODCM was not revised during the 2018 reporting period. There are no commitments contained in this fetter.

If you have any questions or require additional information, please do not hesitate to contact Dr. Amber Donley at 717-456-3056.

Sincerely, Matthew J. Herr, Plant Manager Peach Bottom Atomic Power Station MJH/SMO/GRS/BMR/ASD/asd Enclosure {1) cc: USN RC Region I, Regional Administrator {Daniel H. Dorman)

USN RC Senior Resident Inspector, PBAPS (Justin Heinly)

USN RC Region I Inspector (James R. Cassata)

CCN 19-47

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. 61 JANUARY 1, 2018 THROUGH DECEMBER 31, 2018 Submitted to The United States Nuclear Regulatory Commission Pursuant to Facility Operating Licenses DPR-44 and DPR-56

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC (This page intentionally left blank) 2

Peach Bottom Atomic Power Station licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC TABLE OF CONTENTS INTRODUCTION ......................................................................................................................................4 ATIACHMENT 1: SUPPLEMENTAL INFORMATION ................................................................................. 6 Regulatory limits .......................................*.....*......**.....*.....................................*......****.......*.. 7 Maximum Permissible Concentrations ...............*..........*.......**............*............................*....... 7 Average Energy ......................................................................................................................... 8 Measures and Approximations of Total Radioactivity .............................................................. 8 Batch Releases ........................................................................................................................ 10 Average Stream Flow .............................................................................................................. 10 Abnormal or Unplanned Releases .......................................................................................... 11 liquid Releases ....................................................................................................................... 11 Gaseous Releases ................................................................................................................... 12 Changes to the ODCM ............................................................................................................ 12 Minimum Detectable Concentrations ................**.....**.......*............................................*...... 12 Violations ................................................................................................................................ 12 Dose Assessment .................................................................................................................... 13 Introduction ............................................................................................................................ 13 Liquid Dose Assessment ......................................................................................................... 13 Gaseous Dose Assessment ............*.......*............*......*...*............................*....*.....***.......*...... 14 ATIACHMENT 2: EFFLUENT

SUMMARY

............................................................................................... 16 Gaseous Effluents-Summation of All Releases ...................................................................... 17 Gaseous Effluents Release Point: Elevated (Main Offgas Stack) ............................................. 18 Gaseous Effluents Release Point: Ground-Level (Units 2 and 3 Reactor Building Exhaust Vents and Abnormal Releases) ............................................................................................... 19 Liquid Effluents - Summation of All Releases .......................................................................... 20 liquid Effluents Release Points - Liquid Radwaste, RHR Leaks and Groundwater ................. 21 ATIACHMENT 3: SOLID WASTE AND IRRADIATED FUEL SHIPMENTS .................................................. 22 Solid Waste Shipped ............................................................................................................... 23 Irradiated Fuel Shipments ....................................................................................................... 24 Changes to Process Control Program (PCP) ............................................................................ 24 ATTACHMENT 4: RADIOLOGICAL IMPACT ON MAN ............................................................................ 25 Radiological Impact on Man ................................................................................................... 26 40 CFR 190 Doses.................................................................................................................... 26 ATIACHMENT 5: METEOROLOGICAL DATA ......................................................................................... 27 Technical Concurrence (for accuracy of information):

Manager, Site Chemistry and Radwaste 3

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC INTRODUCTION In accordance with the Reporting Requirements of Technical Specification 5.6.3 applicable during the reporting period, January 1, 2018 through December 31, 2018, this report summarizes the Effluent Release Data for Peach Bottom Atomic Power Station (PBAPS) Units 2 and 3. 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 (ODCMS) limits.

There were three (3) abnormal releases of liquid radioactive material. Two releases were from two different Residual Heat Removal (RHR) heat exchangers (beginning July of 2016 and November 2018) and the other is from groundwater tritium contamination ('tritium plume').

These releases were far below regulatory limits.

There were no abnormal releases of gaseous radioactive material during 2018.

The maximum calculated organ dose (bone) from iodines (I-131, I-133 and I-135), tritium (H-3),

carbon-14 (C-14) and particulates to any individual due to all gaseous effluents was 1.38E-01 mrem, which was approximately 4.60E-01% of the annual limit. The maximum calculated air dose in the unrestricted area due to noble gas effluents was 3.02E-01 mrad (gamma) and 2.07E-01 mrad (beta), which was 1.51E+00% and 5.18E-01%, respectively, of the annual limits.

In 2018, there were no direct gaseous or liquid releases or discharges from Unit 1 to the environment. Additionally, there were no gaseous or liquid radioactive releases from the Independent Spent Fuel Storage Installation, NRC Docket No. 72-29 (ISFSI).

No changes made to RW-AA-100 "Process Control Program for Radioactive Waste" or to the ODCM nor the Appendix A during the 2018 reporting period.

4

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Exelon Nuclear common procedures, which provide consistent expectations and standards for Radioactive Effluents Controls Program (RECP), were used to generate this report. PBAPS site specific procedures used to assist with abnormal/unplanned releases were also 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-170-300, 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 CY-AA-170-2300, Determination of Carbon-14 in Gaseous Effluents CY-PB-170-202, RHR-HPSW Leak Rate Calculation CY-PB-170-2020, Radiological Abnormal Gaseous Release Assessment CY-PB-170-210, Gaseous Dose and Dose Rate Calculation CY-PB-170-2300, OpenEMS Effluent Management System Implementation Peach Bottom Atomic Power Station, Offsite Dose Calculation Manual and Specifications (Appendix A) 5

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC ATTACHMENT 1: SUPPLEMENTAL INFORMATION 6

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Regulatory Limits Table 1. Noble Gas Dose Rate and Dose Limits Maximum Value Units Limit Classification Specification 500 mrem/ yr annual total body dose rate ODCM Specification 3.8.C.1.a 3000 mrem/ yr annual skin dose rate ODCM Specification 3.8.C.1.a 10 mrad gamma radiation air dose per quarter ODCM Specification 3.8.C.2.a 20 mrad beta radiation in air dose per quarter ODCM Specification 3.8.C.2.b 20 mrad gamma radiation in air dose per year ODCM Specification 3.8.C.2.c 40 mrad beta radiation in air dose per year ODCM Specification 3.8.C.2.d Table 2. Iodines, Tritium and Particulates (with half-lives >8 days) Dose Rate and Dose Limits Maximum Value Units Limit Classification Specification 1500 mrem/ yr annual dose rate limit to any organ ODCM Specification 3.8.C.1.b 15 mrem annual dose limit to any organ per quarter ODCM Specification 3.8.C.3.a 30 mrem dose limit to any organ per year ODCM Specification 3.8.C.3.b Table 3. Liquid Effluent Activity Concentration and Dose Rate Limits Maximum Value Units Limit Classification Specification 10 times 10 CFR 20, Appendix B, Table 2, µCi/mL Activity Concentration in all liquid releases ODCM Specification 3.8.B.1.a Column 2 total activity concentration for all dissolved and 2E-04 µCi/mL ODCM Specification 3.8.B.1.b entrained noble gases 3.0 mrem total body dose limit per quarter ODCM Specification 3.8.B.2.a 10 mrem total body dose limit per year ODCM Specification 3.8.B.2.a 6.0 mrem dose limit per quarter to any organ ODCM Specification 3.8.B.2.b 20 mrem dose limit per year to any organ ODCM Specification 3.8.B.2.b Maximum Permissible Concentrations Gaseous dose rates, rather than effluent concentrations, are used to calculate permissible release rates for gaseous releases. The maximum permissible dose rates for gaseous releases are defined in 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 multiplied by 10, for identified nuclides, are used to calculate permissible release rates and concentrations for liquid release per ODCMS 3.8.B.1.

The total activity concentration for all dissolved or entrained noble gases is limited to < 2E-04

µCi/mL (ODCMS 3.8.B.1.b).

7

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Average Energy The PBAPS 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, Revision 1, "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 PBAPS.

Measures and Approximations of Total Radioactivity Fission and Activation Gases The method used for gamma isotopic analysis is the Canberra GenieTM 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 were analyzed to report noble gas effluent activities. When no activity was identified in the grab isotopic analysis (un-id(s) or un-id(v)), the entire release must be assumed to be the radionuclide with the most-limiting dose factors for the release pathway (i.e. krypton-88 (Kr-88) for all ground-level releases, Kr-88 for elevated gamma dose and Kr-87 for elevated beta dose; see ODCM IV.B and NUREG-01331). 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.

Iodines The method used is the Canberra GenieTM System with a charcoal cartridge. Iodine activity was continuously sampled and analyzed in accordance with ODCMS Table 4.8.C.1.

Particulates The method used is the Canberra GenieTM System with a particulate filter (47 mm diameter).

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 strontium-89 (Sr-89), Sr-90, nickel-63 (Ni-63) and gross alpha.

1 NUREG 0133, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants: A Guidance Manual for Users of Standard Technical Specifications," October 1978.

8

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Carbon-14 The amount of C-14 released was estimated using the guidance from the Electric Power Research Institute (EPRI) Technical Report 1021106, "Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents". The C-14 was released primarily through the Main Offgas Stack (9.70E+01%)

with a small amount (3.00E+00%) through the Reactor Building Exhaust Vents. The C-14 in liquid effluents is not a significant dose pathway, as determined from studies. The resulting annual dose to the maximum conservative receptor is 1.38E-01 mrem, with the limiting receptor as the child bone.

Liquid Effluents Gamma isotopic activity concentrations are determined on each batch of liquid effluent prior to release using the Canberra GenieTM 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 are analyzed for tritium on-site and submitted to an offsite vendor laboratory for analyses of iron-55 (Fe-55), phosphorus-32 (P-32), Sr-89, Sr-90, Ni-63, and gross alpha.

Decommissioned Unit 1 Liquid Radioactive Waste Processing There were no direct gaseous or liquid releases or discharges from Unit 1 to the environment during 2018. However, during the reporting period, a total of 333 gallons of water with low concentrations of H-3 were collected from Unit 1 and stored at Unit 2 and 3, for processing in a future year. No gamma emitting nuclides were identified above detectable limits. During the reporting period, there were no releases of Unit 1 water through the Unit 2 and Unit 3 liquid radwaste system. Therefore, there is no estimated liquid effluent doses for 2018 from Unit 1 water releases through the Unit 2 and Unit 3 liquid radwaste system.

Estimate of 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, which are listed in of this report.

9

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Batch Releases Table 4. Quarterly Liquid Batch Release Statistics First Quarter Second Quarter Third Quarter Fourth Quarter Number of Batch 18* 2 4 8 Releases Total Time for Batch 2.31E+03 1.150E+02 3.930E+02 4.730E+02 Releases (minutes)

Maximum time period for batch release 1.78E+02 8.000E+01 1.350E+02 1.000E+02 (minutes)

Average time period for batch release 1.28E+02 5.750E+01 9.825E+01 5.913E+01 (minutes)

Minimum time period for batch release 3.70E+01 3.500E+01 5.000E+01 3.700E+01 (minutes)

Average Stream Flow 3 2,3 1.95E+05 1.74E+05 2.38E+05 2.65E+05 (ft / s)

Dilution volume 9.49E+09 5.22E+08 1.79E+09 2.15E+09 (liters)

  • Number of releases increased from 2017 due to work on the torus dewatering tank Table 5. Quarterly Gaseous Batch Release Statistics First Quarter Second Quarter Third Quarter Fourth Quarter Number of batch 0 0 0 0 releases:

Total Time for batch 0 0 0 0 releases (minutes)

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)

Average Stream Flow The river flow is not used for dose calculations. The actual flow rate of Circulation Water (the water that is circulated within the plant for cooling) is determined for each liquid effluent release because this Circulation Water provides dilution and therefore reduces the projected dose.

2 Average Stream Flow is not used for dose calculation.

3 USGS National Water Information System, Site Name: "Susquehanna River at Marietta, PA", Site Number:

01576000. Data accessed 13 March 2019.

10

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Abnormal or Unplanned Releases

'Abnormal' releases are those releases that are not defined as 'normal' releases in the Licensee's ODCM. Systems with a potential for an unplanned release are monitored to ensure if a release were to occur it would be identified and quantified appropriately. Source terms used for dose calculations utilize direct sampling and the maximum concentrations of nuclides to ensure that the most conservative and bounding estimates are used. Methodologies calculate conservative dose utilizing conservative mathematical models to describe intake and exposure pathways. Therefore, reported doses for these abnormal releases are calculated conservatively.

Liquid Releases Groundwater Tritium Plume During 2018, 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 flow into the plant intake and eventually flow into the normal discharge canal. Details of this program can be found in the Peach Bottom Annual Radiological Environmental Operating Report (AREOR) as an appendix. No other nuclides were detected in monitoring wells.

Analysis of Release It was assumed from the maximum flow rates measured4 that ground water flowed to the discharge canal at a steady rate of 3.44E+02 gpm, carrying with it some of the tritium underneath the plant. The ground water flow rate was updated in April 2017, when the new report was provided4. The conservative maximum dose for the entire year from this continuous release is calculated to be 2.94E-05 mrem (to the whole-body) and 2.94E-05 mrem (to any organ, except bone5 which is 0.00E+00 mrem)6. This dose contribution projection is well below the limit specified in the ODCM.

Heat Exchanger Leakage In July of 2016, a small leak developed in the Unit 3 'C' Residual Heat Removal (RHR) Heat Exchanger and on November 13, 2018 a small leak developed in the Unit 2 'B' RHR. The RHR system is designed to circulate water to remove heat from the reactor unit when necessary.

The dose model assumes that contaminated torus water leaks from the heat exchanger, regardless of operating pressure to ensure conservatism in calculated dose. As an additional precaution, installed radiation monitoring instrumentation can indicate an inadvertent release of radioactive material should the heat exchanger develop a large leak unexpectedly.

4 "Estimated Mass Flux Of Tritiated Groundwater To The Conowingo Reservoir And Rock Run Creek, Peach Bottom Atomic Power Station, Delta, Pennsylvania", August 2017, GHD formerly Conestoga-Rovers & Associates.

5 Tritium dose factor for bone is 0.00E+00; therefore no hypothetical dose is calculated.

6 These doses are identical because the dose factors are identical for the same nuclide and pathway.

11

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Analysis of Release It was assumed that the torus water released to the discharge canal, during 2018, contributed a conservative maximum dose of 5.42E-05 mrem to the total body (receptor adult), and a conservative maximum organ dose of 1.54E-04 mrem to the adult GI-LLI. This dose contribution is well below the limits specified in the ODCM.

Samples were analyzed for all the parameters of radioactive effluent releases. Composite liquid torus water samples were counted for tritium and submitted to an offsite vendor laboratory for analyses of Fe-55, P-32, Sr-89, Sr-90, Ni-63 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.

Gaseous Releases There were no gaseous abnormal releases during 2018.

Changes to the ODCM There were no changes made to the ODCM, nor the ODCM Specifications (Appendix A) during 2018.

Minimum Detectable Concentrations If a radionuclide was not detected, "<LLD" was reported as the activity. Samples were analyzed with techniques that achieved the required Lower Limits of Detection (LLD) specified in ODCMS Table 4.8.B.1, "Radioactive Liquid Waste Sampling and Analysis" (for liquids) or ODCMS Table 4.8.C.1, "Radioactive Gaseous Waste Sampling and Analysis from Main Stack and Vent Stack" (for gases). In all cases, the LLD requirements were satisfied.

Violations There were no effluent release violations for the 2018 reporting period.

12

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Dose Assessment Introduction A dose assessment for PBAPS was conducted with the measured cumulative 2018 radioactive effluent source terms, provided in Attachment 2, "Effluent Summary," and the 2018 meteorological (MET) data. This dose assessment verifies that PBAPS continues to demonstrate compliance with the limits as well as the requirement of maintaining the doses "as low as is reasonably achievable" as stated in 10 CFR 50, Appendix I.7 Liquid Dose Assessment Hydrologic Conditions and Receptor Locations of Interest PBAPS is located on the Conowingo Pond formed in the Susquehanna River by the Conowingo Dam. For 2018, the annual average river flow8 was measured as 8.72E+05 ft3/s.

Of the three separate flow regimes that were used in the original Appendix I submittal, the most-limiting of them (<1.50E+04 ft3/s) was used to calculate a dose assessment for this report because this would provide a bounding extreme for all PBAPS liquid effluents. Therefore, although the actual average stream flow for the year was more than double the limiting case, this report will provide an upper limit for the most-limiting dose.

The annual average dilution factor9 at the Conowingo Intake is 5.40E+00 and the assumption for the reconcentration factor9 is 1.16E+00. The PBAPS shorewidth factor10 of 2.00E-01 was also used.

No invertebrate intake was examined because invertebrate ingestion pathways are not considered to be significant in the area close to PBAPS. The pathway factors for the various age groups, used to determine dose to the public from liquid effluents are shown in Table 6.

Table 6. Consumption and Usage Rate Assumptions Pathway Adult Teenager Child Infant Units 10 Eating Fish 2.10E+01 1.60E+01 6.90E+00 0.00E+00 kg/ yr 11 Drinking Water 7.30E+02 5.10E+02 5.10E+02 5.10E+02 L/ yr 12 Swimming 2.80E+02 2.80E+02 0.00E+00 0.00E+00 h/ yr 12 Boating 1.20E+02 1.20E+02 6.70E+01 0.00E+00 h/ yr 12 Shoreline Recreation 3.25E+02 3.25E+02 1.40E+01 0.00E+00 h/ yr 12 Fishing from Conowingo Dam 3.25E+02 3.25E+02 0.00E+00 0.00E+00 h/ yr 7

10 CFR 50 Appendix I, "Numerical Guides for Design Objectives and Limiting Conditions for Operation to Meet the Criterion "As Low as is Reasonable Achievable" for Radioactive Material in Light-Water-Cooled Nuclear Power Reactor Effluents".

8 USGS National Water Information Service; Monitoring Site 01576000, Susquehanna River at Marietta, PA; http://waterdata.usgs.gov/nwis. Accessed 13 Mar 2019.

9 From original ODCM.

10 RG 1.109, Table A-2.

11 All locations from RG 1.109, Section A-2. Chester Water Authority uses 10% of the RG 1.109 value because it is assumed to have 10% sourced from Conowingo Pond.

12 PBAPS Environmental Report, Supplement No. 3, Page 19. Boating data is a ratio of Adult:Child rates from RG 1.109, Table A-2.

13

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Liquid Effluent Dose Assessment Conclusion For all permitted releases in 2018, the calculated total body dose was 5.07E-05 mrem and 5.31E-05 mrem to the limiting organ of adult liver.

Therefore, PBAPS liquid radioactive effluent controls continue to demonstrate compliance with 10 CFR 50, Appendix I objectives for the purposes of keeping doses to members of the public "as low as is reasonably achievable". These limiting or maximum calculated doses are a small fraction of the limits in Appendix I.

Gaseous Dose Assessment The gaseous dose assessment calculates the conservative dose at the limiting receptor location, as defined in the ODCM and at locations from the land-use census, using the 2018 meteorology to demonstrate compliance with 10 CFR 50, Appendix I. The assessment compares the current ODCM locations to the maximum locations from the land use census to ensure the current ODCM locations are still the most impactful dose locations.

Tables 7 and 8 utilized the CY-PB-170-210 spreadsheet to calculate the doses for elevated and ground releases with the 2018 MET data and gaseous total activity released, including C-14. Table 7 utilized MET data from the locations with the highest X/Q from the Main Offgas Stack and the corresponding Reactor Building Exhaust Vents MET factors. Table 8 utilized MET data from the locations with the highest D/Q sectors from the Reactor Building Exhaust Vents and the corresponding Main Offgas Stack MET factors. The X/Q values are very similar to those used in the ODCM, and therefore the differences in noble gas dose is minimal. The larger discrepancies between Iodine, Particulates, Tritium (I/P/T) organ doses can be explained by the differences in pathways. Tables 7 and 8 assume that there is a milk pathway at each of the listed locations.

The ODCM defines the milk pathway at 1500m SW and the D/Qs are more comparable (2018 vent: 2.49E-9 1/m2 vs. ODCM vent: 1.58E-09 1/m2) and therefore, the dose calculated by ODCM methodology is more accurately representative of the dose to members of the public than the dose reported in Tables 7 and 8.

Table 7. Conservative Maximum Elevated Release Dose from 2018 Source Term and 2018 Meteorology 2018 Highest Gamma Beta Air I/P/T/C-Distance 2018 Vent Total Body Skin Dose Limiting Direction MS X/Q Air Dose Dose 14 Dose (m) X/Q (D/Q) Dose (mrem) (mrem) Receptor (D/Q) (mrad) (mrad) (mrem) 4.34E-08 1.47E-07 4600 N 3.88E-02 5.07E-02 4.02E-02 2.78E-02 1.82E-01 Bone (3.13E-10) (7.62E-10) 3.63E-08 1.64E-07 3800 SW 4.33E-02 5.64E-02 4.48E-02 3.08E-02 1.57E-01 Bone (2.38E-10) (6.06E-10) 14

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Table 8. Ground-Level Dose from 2018 Source Term and 2018 Meteorology 2018 Highest 2018 MS Total Body Gamma Beta Air I/P/T/C-Distance Skin Dose Limiting Direction Vent D/Q X/Q Dose Air Dose Dose 14 Dose (m) (mrem) Receptor (X/Q) (D/Q) (mrem) (mrad) (mrad) (mrem) 1.11E-08 3.28E-09 1200 SSE 3.44E-01 4.47E-01 3.56E-01 2.42E-01 1.70E-01 Bone (1.32E-06) (6.29E-10) 7.61E-09 5.36E-09 900 NW 3.62E-01 4.70E-01 3.74E-01 2.55E-01 1.85E-01 Bone (1.39E-06) (7.18E-10)

Gaseous Radioactive Effluent Dose Assessment Conclusion The conservative maximum dose was 1.38E-01 mrem with the maximum receptor as the child bone which is due to the incorporation of carbon-14 in the calculation. Without C-14, the maximum dose is 5.55E-03 mrem to the infant thyroid. The noble gas limiting air doses were 3.02E-01 mrad (gamma) and 2.07E-01 mrad (beta). Noble gas plume conservative dose was 2.92E-01 mrem to the total body and 3.08E-01 to the skin mrem for the year.

A dose assessment was performed for members of the public due to their activities inside the site boundary, per ODCMS 3.10.2.f. The location where a member of the public would spend a significant amount of time inside the site boundary is the vehicle checkpoint, approximately 1,300 feet N of the PBAPS Unit 2 and Unit 3 reactor building exhaust vents. Assuming continuous occupancy, the calculated total body and skin doses were 3.85E-01 mrem and 5.01E-01 mrem, respectively. The noble gas limiting air doses were 3.99E-01 mrad (gamma) and 2.71E-01 mrad (beta). The maximum organ dose from the inhalation pathway, not including C-14, is 2.14E-03 mrem to the infant thyroid.

All doses are projected to be much less than the limits, as expected. Again, these dose models incorporate several factors of conservatism including a source term that, by procedure, will use the most dose-limiting noble gas nuclide when no fission gas can be identified by grab sample but activity is detected from the effluent radiation monitor. Exelon Nuclear uses a detailed C-14 dose projection from the Electric Power Research Institute, Technical Report 1021106. Details for the assumptions used in this calculation may be found there.15 Therefore, PBAPS gaseous radioactive effluent controls continue to demonstrate compliance with 10 CFR 50, Appendix I objectives for the purposes of keeping doses to members of the public "as low as is reasonably achievable". These limiting or maximum calculated doses are a small fraction of the limits in Appendix I.

15 PBAPS uses specific Boiling Water Reactor assumptions because the fraction of C-14 that is in the CO2 form will vary based on general plant design. This is important because the major dose pathway is through photosynthesis and, therefore, only the oxide form is relevant.

15

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC ATTACHMENT 2: EFFLUENT

SUMMARY

16

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Gaseous Effluents - Summation of All Releases Period: January 1, 2018 through December 31, 2018 Unit: Peach Bottom Est. Total A. Fission & Activation Gases Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

1. Total Release Ci 1.88E+02 1.58E+02 3.65E+02 1.83E+02 4.00E+01
2. Average release For the Period uCi/ s 2.42E+01 2.01E+01 4.59E+01 2.30E+01
3. Gamma Air Dose mrad 8.62E-02 6.98E-02 7.10E-02 7.49E-02
4. Beta Air Dose mrad 5.89E-02 4.75E-02 4.99E-02 5.10E-02
5. Percent of ODCM limit Gamma Air Dose  % 8.62E-01 6.98E-01 7.10E-01 7.49E-01 Beta Air Dose  % 2.94E-01 2.37E-01 2.49E-01 2.55E-01 B. Iodines
1. Total I-131 Ci 2.74E-05 1.10E-04 2.70E-04 2.20E-04 1.90E+01
2. Average release For the Period uCi/ s 3.53E-06 1.41E-05 3.39E-05 2.77E-05
3. Percent of ODCM limit  % * * * *
  • No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.

C. Particulate

1. Particulates with T1/2 > 8 days Ci 6.61E-05 5.48E-05 1.54E-04 2.56E-04 2.80E+01
2. Average release For the Period uCi/ s 8.50E-06 6.97E-06 1.94E-05 3.22E-05
3. Percent of ODCM limit  % * * * *
  • No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.

D. Tritium

1. Total Release Ci 3.81E+00 1.76E+01 2.94E+01 1.88E+01 1.30E+01
2. Average release For the Period uCi/ s 4.90E-01 2.24E+00 3.69E+00 2.36E+00
3. Percent of ODCM limit  % * * * *
  • No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.

E. Gross Alpha

1. Total Release Ci <LLD <LLD <LLD <LLD 4.00E+02
2. Average release For the Period uCi/ s <LLD <LLD <LLD <LLD
3. Percent of ODCM limit  % * * * *
  • No ODCM defined Curie Limit, therefore a percentage of the limit cannot be calculated.

F. Carbon-14

1. Total Release Ci 9.47E+00 9.47E+00 9.47E+00 9.47E+00
2. Average release For the Period uCi/ s 1.22E+00 1.20E+00 1.19E+00 1.19E+00 G. Iodine-131, 133 and 135, Tritium, Carbon-14 & Particulate
1. Organ Dose* mrem 3.45E-02 3.45E-02 3.44E-02 3.44E-02
2. Percent ODCM limit  % 2.30E-01 2.30E-01 2.30E-01 2.30E-01
  • C-14 contributes most significantly; therefore, the quarterly dose to the child bone is reported 17

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Gaseous Effluents Release Point: Elevated (Main Offgas Stack)

Period: January 1, 2018 through December 31, 2018 Unit: Peach Bottom Nuclides Released Continuous Mode Batch Mode

1. Fission Gases Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Quarter 1 Quarter 2 Quarter 3 Quarter 4 Unidentified Ci 1.95E+01 4.64E+00 <LLD 3.63E+00 <LLD <LLD <LLD <LLD Ar-41 Ci <LLD <LLD 2.27E-01 <LLD <LLD <LLD <LLD <LLD Kr-85m Ci 5.38E+00 1.60E+00 1.52E+00 4.78E+00 <LLD <LLD <LLD <LLD Kr-87 Ci <LLD <LLD 1.11E+00 <LLD <LLD <LLD <LLD <LLD Kr-88 Ci 7.08E-01 <LLD 1.09E+00 9.86E-01 <LLD <LLD <LLD <LLD Xe-133m Ci <LLD <LLD 1.90E+00 <LLD <LLD <LLD <LLD <LLD Xe-133 Ci 1.75E+00 2.17E+01 1.69E+02 3.46E+01 <LLD <LLD <LLD <LLD Xe-135m Ci <LLD <LLD 4.93E+00 <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD 1.31E+00 1.42E+01 3.76E-02 <LLD <LLD <LLD <LLD Xe-138 Ci 1.96E+00 <LLD 6.01E+00 <LLD <LLD <LLD <LLD <LLD Total For Period Ci 2.93E+01 2.92E+01 2.00E+02 4.40E+01 <LLD <LLD <LLD <LLD
2. Iodines I-131 Ci 2.52E-05 3.26E-05 7.58E-05 1.26E-04 <LLD <LLD <LLD <LLD I-132 Ci <LLD <LLD 1.36E-05 <LLD <LLD <LLD <LLD <LLD I-133 Ci 5.74E-05 9.60E-05 2.30E-04 9.75E-05 <LLD <LLD <LLD <LLD I-135 Ci <LLD 4.10E-05 1.10E-04 1.58E-06 <LLD <LLD <LLD <LLD Total For Period Ci 8.26E-05 1.70E-04 4.29E-04 2.25E-04 <LLD <LLD <LLD <LLD
3. Particulates Sr-89 Ci 2.80E-05 1.91E-05 2.91E-05 2.86E-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 3.79E-07 <LLD 7.16E-08 <LLD <LLD <LLD <LLD <LLD Ba-140 Ci 6.35E-06 3.51E-06 9.13E-06 8.33E-06 <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD 3.17E-06 <LLD <LLD <LLD <LLD Mn-54 Ci 3.06E-07 <LLD <LLD 2.98E-07 <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD 5.28E-07 <LLD <LLD <LLD <LLD Co-60 Ci 7.53E-06 2.14E-06 7.90E-06 8.55E-06 <LLD <LLD <LLD <LLD Ag-110m Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zn-65 Ci 4.36E-07 <LLD <LLD 3.38E-06 <LLD <LLD <LLD <LLD Total For Period Ci 4.30E-05 2.48E-05 4.62E-05 5.29E-05 <LLD <LLD <LLD <LLD
4. Tritium H-3 Ci 2.66E-01 8.78E-01 1.66E+00 5.13E+00 <LLD <LLD <LLD <LLD
5. Gross Alpha Gross Alpha Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD
6. Carbon-14 C-14 Ci 9.19E+00 9.19E+00 9.19E+00 9.19E+00 <LLD <LLD <LLD <LLD 18

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Gaseous Effluents Release Point: Ground-Level (Units 2 and 3 Reactor Building Exhaust Vents and Abnormal Releases)

Period: January 1, 2018 through December 31, 2018 Unit: Peach Bottom Nuclides Released Continuous Mode Batch Mode Quarter Quarter Quarter Quarter

1. Fission Gases Unit Quarter 1 Quarter 2 Quarter 3 Quarter 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 3.19E+01 <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD 3.16E+00 <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 1.59E+02 1.29E+02 1.30E+02 1.39E+02 <LLD <LLD <LLD <LLD Total For Period Ci 1.59E+02 1.29E+02 1.65E+02 1.39E+02 <LLD <LLD <LLD <LLD
2. Iodines I-131 Ci 2.22E-06 7.79E-05 1.94E-04 9.41E-05 <LLD <LLD <LLD <LLD I-132 Ci <LLD <LLD 1.30E-04 <LLD <LLD <LLD <LLD <LLD I-133 Ci 1.41E-05 4.25E-04 1.14E-03 1.50E-04 <LLD <LLD <LLD <LLD I-135 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total For Period Ci 1.63E-05 5.03E-04 1.46E-03 2.44E-04 <LLD <LLD <LLD <LLD
3. Particulates 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 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD 6.70E-06 <LLD <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD 7.40E-05 <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD 1.61E-05 <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD 1.07E-05 <LLD <LLD <LLD <LLD Co-60 Ci 2.31E-05 3.01E-05 8.81E-05 8.69E-05 <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD 2.50E-06 <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD 1.31E-05 1.29E-05 <LLD <LLD <LLD <LLD Total For Period Ci 2.31E-05 3.01E-05 1.08E-04 2.03E-04 <LLD <LLD <LLD <LLD
4. Tritium H-3 Ci 3.54E+00 1.67E+01 2.77E+01 1.36E+01 <LLD <LLD <LLD <LLD
5. Gross Alpha Gross Alpha Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD
6. Carbon-14 C-14 Ci 2.84E-01 2.84E-01 2.84E-01 2.84E-01 <LLD <LLD <LLD <LLD 19

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Liquid Effluents - Summation of All Releases Period: January 1, 2018 to December 31, 2018 Unit: Peach Bottom Est. Total A. Fission & Activation Gases Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

1. Total Release (not including tritium, gases 1.28E-03 7.10E-04 7.44E-04 1.91E-03 1.60E+01

& alpha) Ci

2. Average diluted concentration for the 2.17E-12 1.07E-12 1.10E-12 2.82E-12 Period Ci/ mL
3. Percent of applicable limit Total Body Dose*  % 2.41E-03 5.59E-04 5.57E-04 1.02E-03 Organ Dose*  % 1.05E-03 3.31E-04 3.27E-04 5.67E-04
  • ODCMS 3.8.B.2.a and ODCMS 3.8.B.2.b (page 7) define the dose limit Est. Total B. Tritium Error %
1. Total Release Ci 4.62E+00 9.93E-01 1.20E+00 9.83E-01 6.40E+00
2. Average diluted concentration for the 7.85E-09 1.49E-09 1.78E-09 1.45E-09 Period µCi/ mL
3. Percent of applicable limit*  % 7.85E-05 1.49E-05 1.78E-05 1.45E-05
  • 10x 10CFR20 Limit of 1.00E-03 µCi/ mL; ODCMS 3.8.B.1.a Est. Total C. Dissolved & Entrained Gases Error %
1. Total Release Ci <LLD <LLD 8.05E-06 <LLD 2.80E+01
2. Average diluted concentration for the <LLD <LLD 1.19E-14 <LLD Period Ci/ mL
3. Percent of ODCM limit*  % 0.00E+00 0.00E+00 5.95E-09 0.00E+00
  • ODCMS 3.8.B.1.b Limit for all noble gases is 2.00E-04 µCi/ mL Est. Total D. Gross Alpha Activity Error %
1. Total Release Ci <LLD <LLD <LLD <LLD 2.30E+01 E. Volume of Waste Released (prior to 1.58E+08 1.71E+08 1.73E+08 1.73E+08 dilution) Liters F. Volume of Dilution Water Used During 5.88E+11 6.66E+11 6.74E+11 6.78E+11 Period Liters 20

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Liquid Effluents Release Points - Liquid Radwaste, RHR Leaks and Groundwater Period: January 1, 2018 through December 31, 2018 Unit: Peach Bottom Nuclides Released Continuous Mode Batch Mode Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Quarter 1 Quarter 2 Quarter 3 Quarter 4 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 <LLD <LLD <LLD 9.07E-06 2.09E-07 1.57E-07 6.26E-07 3.09E-07 I-131 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Co-58 Ci 1.01E-04 3.25E-05 1.71E-05 2.55E-05 <LLD <LLD <LLD <LLD Co-60 Ci 6.79E-04 4.45E-04 5.58E-04 1.42E-03 2.90E-06 <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zn-65 Ci 9.70E-05 4.15E-05 2.32E-05 5.74E-05 <LLD <LLD <LLD <LLD Mn-54 Ci 2.55E-04 1.80E-04 1.38E-04 1.90E-04 <LLD <LLD <LLD <LLD Cr-51 Ci 4.99E-05 <LLD <LLD <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Nb-95 Ci <LLD <LLD <LLD <LLD <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 <LLD <LLD <LLD <LLD <LLD <LLD <LLD La-140 Ci <LLD <LLD <LLD <LLD 4.74E-05 <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 3.08E-05 <LLD <LLD 1.63E-04 <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Ni-63 Ci 1.53E-05 1.07E-05 6.84E-06 4.68E-05 <LLD <LLD <LLD <LLD H-3 Ci 7.14E-01 9.93E-01 7.60E-01 9.83E-01 3.90E+00 2.76E-04 4.40E-01 6.06E-04 P-32 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total for Period Ci 7.15E-01 9.93E-01 7.61E-01 9.85E-01 3.90E+00 2.76E-04 4.40E-01 6.06E-04 Xe-133 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD <LLD 8.05E-06 <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD Total for Period (ex-tritium, Ci 1.23E-03 7.10E-04 7.44E-04 1.91E-03 5.05E-05 1.57E-07 6.26E-07 3.09E-07 gases and alpha) 21

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC ATTACHMENT 3: SOLID WASTE AND IRRADIATED FUEL SHIPMENTS 22

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Solid Waste Shipped 1.Type of Waste Units 2018 Est. error %

A: Spent Resin, Filters, Sludges, Evaporator Bottoms, etc m 3 1.33E+02 Ci 5.09E+02 2.50E+01 B: Dry Compressible Waste, Contaminated Equipment, etc. m3 6.02E+02 Ci 1.89E+00 2.50E+01 C: Irradiated Components, Control Rods, etc. m3 0.00E+00 Ci 0.00E+00 2.50E+01 D: Other (Oil, SBLC) m3 3.09E+01 Ci 2.21E-03 2.50E+01 2.Estimate of Major Nuclide Composition (by type of waste)

a. Spent-Resin, Filters, Sludges, Evaporator Bottoms, etc.

Abundance % Abundance %

Nuclide (no cutoff) Activity (Ci) Nuclide (no cutoff) Activity (Ci)

H-3 3.30E-01% 1.67E+00 Ag-110m 2.50E-01% 1.26E+00 C-14 9.80E-01% 5.00E+00 Sn-113 0.00E+00% 4.35E-05 Cr-51 0.00E+00% 1.36E-03 Sb-124 0.00E+00% 2.71E-04 Mn-54 3.49E+00% 1.77E+01 Sb-125 1.00E-02% 6.08E-02 Fe-55 2.79E+01% 1.42E+02 I-131 0.00E+00% 6.84E-16 Fe-59 0.00E+00% 2.04E-04 Cs-134 2.00E-02% 7.92E-02 Co-57 1.00E-02% 5.49E-02 Cs-137 6.17E+00% 3.14E+01 Co-58 1.80E-01% 9.00E-01 Ba-140 0.00E+00% 1.21E-10 Co-60 5.31E+01% 2.70E+02 La-140 0.00E+00% 2.59E-65 Ni-59 0.00E+00% 1.99E-02 Ce-141 0.00E+00% 6.43E-06 Ni-63 1.27E+00% 6.48E+00 Ce-144 4.00E-02% 2.16E-01 Zn-65 6.21E+00% 3.16E+01 Pu-238 0.00E+00% 1.17E-03 Sr-89 0.00E+00% 3.23E-03 Pu-239 0.00E+00% 3.07E-04 Sr-90 2.00E-02% 1.18E-01 Pu-241 4.00E-02% 1.95E-01 Zr-95 0.00E+00% 3.33E-10 Am-241 0.00E+00% 7.83E-04 Nb-95 0.00E+00% 1.98E-04 Cm-242 0.00E+00% 8.28E-05 Tc-99 1.00E-02% 3.23E-02 Cm-243 0.00E+00% 6.49E-04 Ru-106 0.00E+00% 5.91E-05 Cm-244 0.00E+00% 1.46E-03 23

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC

b. Dry, Compressible Waste, Contaminated Equipment, etc.

Abundance Abundance Nuclide  % (no cutoff) Activity (Ci) Nuclide  % (no cutoff) Activity (Ci)

H-3 3.70E-01% 6.96E-03 Sr-90 0.00E+00% 8.48E-05 C-14 3.50E-01% 6.61E-03 Nb-95 6.00E-02% 1.12E-03 Cr-51 1.32E+00% 2.49E-02 Ag-110m 3.20E-01% 6.04E-03 Mn-54 2.33E+00% 4.40E-02 Sb-125 4.00E-02% 6.99E-04 Fe-55 2.35E+01% 4.43E-01 Cs-137 4.52E+00% 8.53E-02 Fe-59 4.50E-01% 8.56E-03 Ce-144 4.10E-01% 7.75E-03 Co-58 5.90E-01% 1.11E-02 Pu-239 0.00E+00% 2.78E-07 Co-60 6.04E+01% 1.14E+00 Pu-241 0.00E+00% 7.30E-05 Ni-63 8.80E-01% 1.66E-02 Am-241 0.00E+00% 2.54E-07 Zn-65 4.41E+00% 8.32E-02 Cm-242 0.00E+00% 1.91E-07 Sr-89 4.00E-02% 7.60E-04 Cm-244 0.00E+00% 7.37E-07

c. Irradiated Components, Control Rods, etc.

There were no shipments of irradiated components or control rods in 2018.

d. Other: Oil Abundance % Abundance %

Nuclide (no cutoff) Activity (Ci) Nuclide (no cutoff) Activity (Ci)

H-3 3.60E-01% 8.00E-06 Co-60 7.42E+01% 1.64E-03 Cr-51 2.80E+00% 6.19E-05 Ni-63 7.40E-01% 1.63E-05 Mn-54 2.08E+00% 4.59E-05 Zn-65 3.37E+00% 7.44E-05 Fe-55 1.09E+01% 2.41E-04 Cs-137 3.86E+00% 8.52E-05 Co-58 8.50E-01% 1.88E-05 Ce-144 7.90E-01% 1.75E-05

3. Solid Waste Disposition Number of shipments Mode of Transportation Destination 13 Hittman Transport Services Energy Solution Services (CVRF) Bear Creek Operations 9 Hittman Transport Services Energy Solution Services (GRF) Gallaher Road Operations Energy Solutions LLC Clive Disposal Site- Containerized Waste 29 Hittman Transport Services Facility Irradiated Fuel Shipments No shipment of irradiated fuel was made during the reporting period of 2018.

Changes to Process Control Program (PCP)

There were no changes made to RW-AA-100 "Process Control Program for Radioactive Waste" during the 2018 reporting period.

24

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC ATTACHMENT 4: RADIOLOGICAL IMPACT ON MAN 25

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Radiological Impact on Man Location  % of Applicable Estimated Age Distance Direction Applicable Effluent Organ Dose Group (meters) (toward) Limit Limit Unit Gamma -

Noble Gas 3.02E-01 All 1.10E+03 SSE 1.51E+00 2.00E+01 mrad Air Dose Beta - Air Noble Gas 2.07E-01 All 1.10E+03 SSE 5.18E-01 4.00E+01 mrad Dose Total Noble Gas Body 2.92E-01 All 1.10E+03 SSE 2.92E+00 1.00E+01 mrem (gamma)

Skin Noble Gas 3.80E-01 All 1.10E+03 SSE 1.27E+00 3.00E+01 mrem (Beta)

Gaseous Iodine, Particulate, Bone 1.38E-01 Child 1.50E+03 SW 4.60E-01 3.00E+01 mrem Carbon-14 &

Tritium Gaseous Iodine, Thyroid 5.55E-03 Infant 1.50E+03 SW 1.85E-02 3.00E+01 mrem Particulate &

Tritium Total Liquid Body 1.30E-04 Child 2.17E-03 6.00E+00 mrem (gamma) Site Boundary Liquid GI-LLI 2.28E-04 Adult 1.14E-03 2.00E+01 mrem Direct Total 0.00E+00 All 1.19E+03 SSE 0.00E+00 2.20E+01 mrem Radiation Body 40 CFR 190 Doses Location  % of Applicable Estimated Age Distance Direction Applicable Effluent Organ Dose Group (meters) (toward) Limit Limit Unit Total Total Dose 2.92E-01 All 1.19E+03 SSE 1.17E+00 2.50E+01 mrem Body Total Dose Thyroid 5.55E-03 All 1.19E+03 SSE 7.40E-03 7.50E+01 mrem Total Dose Bone 1.38E-01 All 1.19E+03 SSE 5.52E-01 2.50E+01 mrem Total Total Dose 2.92E-01 All 1.19E+03 SSE 9.73E+00 3.00E+00 mrem Body Total Dose Bone 1.38E-01 All 1.19E+03 SSE 4.60E+00 3.00E+00 mrem Total Dose Thyroid 3.07E-01 All 1.19E+03 SSE 5.59E-01 5.50E+01 mrem 26

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC ATTACHMENT 5: METEOROLOGICAL DATA 27

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 1 1 0 0 0 2 NNE 0 10 1 0 0 0 11 NE 1 7 0 0 0 0 8 ENE 2 6 0 0 0 0 8 E 5 3 0 0 0 0 8 ESE 0 16 1 0 0 0 17 SE 0 5 0 0 0 0 5 SSE 0 3 0 0 0 0 3 S 0 5 6 1 0 0 12 SSW 0 0 6 0 0 0 6 SW 0 0 4 0 0 0 4 WSW 0 1 0 0 0 0 1 W 0 0 1 0 0 0 1 WNW 0 0 0 1 0 0 1 NW 0 0 0 2 0 0 2 NNW 0 1 1 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 8 58 21 4 0 0 91 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 28

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 4 3 0 0 0 7 NNE 0 4 1 0 0 0 5 NE 3 1 0 0 0 0 4 ENE 1 2 0 0 0 0 3 E 5 0 0 0 0 0 5 ESE 4 3 0 0 0 0 7 SE 0 5 0 0 0 0 5 SSE 0 1 1 0 0 0 2 S 1 3 4 1 0 0 9 SSW 0 3 4 0 0 0 7 SW 0 0 1 0 0 0 1 WSW 0 1 3 0 0 0 4 W 0 2 12 5 0 0 19 WNW 0 1 5 7 0 0 13 NW 0 0 7 13 0 0 20 NNW 0 1 16 13 3 0 33 Variable 0 0 0 0 0 0 0 Total 14 31 57 39 3 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 29

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 4 1 0 0 0 6 NNE 0 4 3 0 0 0 7 NE 2 1 0 0 0 0 3 ENE 1 0 0 0 0 0 1 E 2 0 0 0 0 0 2 ESE 2 3 0 0 0 0 5 SE 0 1 0 0 0 0 1 SSE 0 2 4 0 0 0 6 S 0 2 2 0 0 0 4 SSW 0 5 1 1 0 0 7 SW 0 0 0 0 0 0 0 WSW 0 0 2 0 0 0 2 W 0 1 7 0 0 0 8 WNW 0 2 8 9 0 0 19 NW 0 1 21 6 0 0 28 NNW 0 2 17 14 1 0 34 Variable 0 0 0 0 0 0 0 Total 8 28 66 30 1 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: 0 30

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 34 20 1 0 0 60 NNE 15 31 11 0 0 0 57 NE 19 21 2 0 0 0 42 ENE 21 5 0 0 0 0 26 E 15 0 0 0 0 0 15 ESE 11 12 0 0 0 0 23 SE 6 30 1 0 0 0 37 SSE 15 52 17 1 0 0 85 S 10 47 33 8 0 0 98 SSW 6 12 2 0 0 0 20 SW 4 6 4 0 0 0 14 WSW 3 6 4 0 0 0 13 W 3 18 42 6 0 0 69 WNW 3 42 56 27 0 0 128 NW 5 40 99 43 3 2 192 NNW 4 22 72 56 17 10 181 Variable 0 0 0 0 0 0 0 Total 145 378 363 142 20 12 1060 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 5 Hours of missing stability measurements in all stability classes: 0 31

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 10 9 1 0 0 0 20 NNE 12 5 0 0 0 0 17 NE 14 4 0 0 0 0 18 ENE 15 0 0 0 0 0 15 E 22 4 0 0 0 0 26 ESE 31 9 0 0 0 0 40 SE 28 18 3 0 0 0 49 SSE 21 22 4 0 0 0 47 S 20 22 4 0 0 0 46 SSW 17 7 1 0 0 0 25 SW 10 8 0 0 0 0 18 WSW 10 31 3 0 0 0 44 W 14 35 9 0 0 0 58 WNW 15 36 9 0 0 0 60 NW 11 15 1 0 0 0 27 NNW 11 11 2 1 0 0 25 Variable 0 0 0 0 0 0 0 Total 261 236 37 1 0 0 535 Hours of calm in this stability class: 8 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes: 0 32

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 7 1 0 0 0 0 8 NNE 1 0 0 0 0 0 1 NE 5 0 0 0 0 0 5 ENE 4 0 0 0 0 0 4 E 8 0 0 0 0 0 8 ESE 9 3 0 0 0 0 12 SE 6 2 0 0 0 0 8 SSE 1 0 0 0 0 0 1 S 5 1 0 0 0 0 6 SSW 4 0 0 0 0 0 4 SW 5 4 0 0 0 0 9 WSW 13 4 0 0 0 0 17 W 8 5 0 0 0 0 13 WNW 4 1 0 0 0 0 5 NW 6 1 0 0 0 0 7 NNW 6 2 0 0 0 0 8 Variable 0 0 0 0 0 0 0 Total 92 24 0 0 0 0 116 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: 0 33

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 2 0 0 0 0 0 2 NE 0 0 0 0 0 0 0 ENE 2 0 0 0 0 0 2 E 3 0 0 0 0 0 3 ESE 9 1 0 0 0 0 10 SE 1 0 0 0 0 0 1 SSE 5 0 0 0 0 0 5 S 1 0 0 0 0 0 1 SSW 2 0 0 0 0 0 2 SW 4 0 0 0 0 0 4 WSW 7 0 0 0 0 0 7 W 6 2 0 0 0 0 8 WNW 3 1 0 0 0 0 4 NW 8 0 0 0 0 0 8 NNW 5 0 0 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 60 4 0 0 0 0 64 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: 0 34

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 3 0 0 0 3 ENE 0 1 1 0 0 0 2 E 0 0 0 0 0 0 0 ESE 0 1 1 0 0 0 2 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 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 2 5 0 0 0 7 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 35

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 0 0 0 0 NNE 0 1 0 0 0 0 1 NE 0 0 2 0 0 0 2 ENE 0 1 1 0 0 0 2 E 0 0 1 0 0 0 1 ESE 0 2 2 0 0 0 4 SE 0 0 3 1 0 0 4 SSE 0 0 1 0 0 0 1 S 0 0 0 1 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 4 10 2 0 0 16 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 36

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 0 0 0 0 0 NNE 0 1 0 0 0 0 1 NE 0 1 2 0 0 0 3 ENE 0 2 0 0 0 0 2 E 0 2 0 0 0 0 2 ESE 0 1 0 0 0 0 1 SE 0 1 6 0 0 0 7 SSE 0 0 0 0 0 0 0 S 0 0 2 1 0 0 3 SSW 0 0 1 2 0 0 3 SW 0 0 1 1 0 0 2 WSW 0 0 0 0 0 0 0 W 0 0 0 2 0 0 2 WNW 0 0 0 0 0 1 1 NW 0 0 0 0 0 4 4 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 8 12 6 0 5 31 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

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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 4 9 33 25 6 0 77 NNE 2 8 32 15 1 0 58 NE 0 11 19 16 1 0 47 ENE 1 6 15 4 0 0 26 E 2 3 7 1 0 0 13 ESE 0 11 11 6 0 0 28 SE 3 20 32 2 0 0 57 SSE 3 11 40 7 0 0 61 S 0 13 65 30 13 3 124 SSW 2 11 23 9 0 1 46 SW 1 5 9 3 0 0 18 WSW 3 2 9 12 0 0 26 W 0 6 14 33 33 6 92 WNW 2 4 17 63 45 33 164 NW 1 7 33 88 86 54 269 NNW 0 6 19 69 50 32 176 Variable 0 0 0 0 0 0 0 Total 24 133 378 383 235 129 1282 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 4 Hours of missing stability measurements in all stability classes: 0 38

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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


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N 2 14 9 3 0 0 28 NNE 2 6 6 0 0 0 14 NE 5 8 7 4 0 0 24 ENE 6 4 3 0 0 0 13 E 4 9 4 1 0 0 18 ESE 3 17 12 3 0 0 35 SE 2 12 20 5 0 0 39 SSE 3 18 23 15 3 0 62 S 1 21 50 23 12 0 107 SSW 2 13 33 11 3 0 62 SW 0 7 6 3 0 0 16 WSW 1 2 13 14 0 0 30 W 0 4 14 24 5 0 47 WNW 2 4 18 34 14 0 72 NW 4 3 23 34 2 0 66 NNW 3 5 13 11 0 0 32 Variable 0 0 0 0 0 0 0 Total 40 147 254 185 39 0 665 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 3 Hours of missing stability measurements in all stability classes: 0 39

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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


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N 1 1 0 0 0 0 2 NNE 0 2 1 0 0 0 3 NE 1 0 2 0 0 0 3 ENE 0 0 0 0 0 0 0 E 0 2 0 0 0 0 2 ESE 0 1 2 0 0 0 3 SE 0 2 1 2 0 0 5 SSE 0 1 3 0 0 0 4 S 1 4 2 0 0 0 7 SSW 1 2 6 1 0 0 10 SW 0 5 4 2 0 0 11 WSW 3 1 5 7 0 0 16 W 1 2 3 3 1 0 10 WNW 1 4 2 2 1 0 10 NW 0 1 1 1 0 0 3 NNW 0 2 7 1 0 0 10 Variable 0 0 0 0 0 0 0 Total 9 30 39 19 2 0 99 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

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: January - March 2018 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


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N 0 0 0 0 0 0 0 NNE 0 2 0 0 0 0 2 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 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 0 0 1 0 0 0 1 SW 1 0 6 1 0 0 8 WSW 1 0 5 3 0 0 9 W 0 1 5 7 0 0 13 WNW 0 1 1 2 0 0 4 NW 1 1 2 0 0 0 4 NNW 1 2 7 0 0 0 10 Variable 0 0 0 0 0 0 0 Total 4 7 27 13 0 0 51 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

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 4 11 3 0 0 0 18 NNE 3 26 0 0 0 0 29 NE 9 2 0 0 0 0 11 ENE 9 4 0 0 0 0 13 E 17 4 0 0 0 0 21 ESE 7 16 4 0 0 0 27 SE 6 12 2 0 0 0 20 SSE 0 7 2 0 0 0 9 S 1 4 8 3 0 0 16 SSW 0 0 5 4 0 0 9 SW 0 0 3 1 0 0 4 WSW 0 0 0 1 0 0 1 W 0 0 1 0 0 0 1 WNW 0 0 5 2 0 0 7 NW 0 0 4 1 0 0 5 NNW 4 7 12 0 0 0 23 Variable 0 0 0 0 0 0 0 Total 60 93 49 12 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: 5 42

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 3 10 2 0 0 0 15 NNE 7 8 0 0 0 0 15 NE 10 0 0 0 0 0 10 ENE 14 7 0 0 0 0 21 E 6 7 0 0 0 0 13 ESE 1 2 2 0 0 0 5 SE 1 1 1 0 0 0 3 SSE 1 7 6 0 0 0 14 S 0 5 5 3 0 0 13 SSW 0 1 14 0 0 0 15 SW 0 3 9 1 0 0 13 WSW 0 0 4 2 0 0 6 W 0 2 10 2 0 0 14 WNW 0 1 9 5 2 0 17 NW 0 1 14 3 0 0 18 NNW 2 9 29 6 0 0 46 Variable 0 0 0 0 0 0 0 Total 45 64 105 22 2 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: 5 43

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 4 4 3 0 0 0 11 NNE 6 2 0 0 0 0 8 NE 6 0 0 0 0 0 6 ENE 1 5 0 0 0 0 6 E 6 0 0 0 0 0 6 ESE 1 2 1 0 0 0 4 SE 2 3 0 0 0 0 5 SSE 4 5 1 0 0 0 10 S 0 4 6 1 0 0 11 SSW 1 3 1 0 0 0 5 SW 1 1 2 0 0 0 4 WSW 0 0 3 1 0 0 4 W 0 5 3 0 0 0 8 WNW 0 2 4 2 1 0 9 NW 2 2 5 0 0 0 9 NNW 2 8 7 2 0 0 19 Variable 0 0 0 0 0 0 0 Total 36 46 36 6 1 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: 5 44

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 31 32 7 0 0 0 70 NNE 39 20 0 0 0 0 59 NE 33 4 0 0 0 0 37 ENE 25 5 0 0 0 0 30 E 30 13 2 0 0 0 45 ESE 8 11 3 0 0 0 22 SE 13 22 6 0 0 0 41 SSE 18 53 13 0 0 0 84 S 14 31 22 1 0 0 68 SSW 5 23 6 0 0 0 34 SW 6 8 9 0 0 0 23 WSW 4 13 7 1 0 0 25 W 5 12 22 1 0 0 40 WNW 10 20 33 10 1 0 74 NW 7 20 37 6 0 0 70 NNW 21 36 29 7 0 0 93 Variable 0 0 0 0 0 0 0 Total 269 323 196 26 1 0 815 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: 5 45

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 37 10 0 0 0 0 47 NNE 27 9 0 0 0 0 36 NE 20 1 0 0 0 0 21 ENE 23 2 0 0 0 0 25 E 14 3 0 0 0 0 17 ESE 17 4 0 0 0 0 21 SE 36 6 0 0 0 0 42 SSE 31 27 2 0 0 0 60 S 23 24 4 0 0 0 51 SSW 24 18 0 0 0 0 42 SW 10 8 0 0 0 0 18 WSW 18 21 4 0 0 0 43 W 14 27 5 0 0 0 46 WNW 6 23 0 0 0 0 29 NW 17 34 0 0 0 0 51 NNW 25 14 1 0 0 0 40 Variable 0 0 0 0 0 0 0 Total 342 231 16 0 0 0 589 Hours of calm in this stability class: 9 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 5 46

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 6 0 0 0 0 0 6 NNE 4 0 0 0 0 0 4 NE 7 0 0 0 0 0 7 ENE 3 0 0 0 0 0 3 E 2 0 0 0 0 0 2 ESE 10 1 0 0 0 0 11 SE 3 0 0 0 0 0 3 SSE 6 1 0 0 0 0 7 S 4 0 0 0 0 0 4 SSW 4 4 0 0 0 0 8 SW 9 1 0 0 0 0 10 WSW 14 2 1 0 0 0 17 W 16 10 0 0 0 0 26 WNW 9 6 0 0 0 0 15 NW 5 1 0 0 0 0 6 NNW 4 4 0 0 0 0 8 Variable 0 0 0 0 0 0 0 Total 106 30 1 0 0 0 137 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: 5 47

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 2 0 0 0 0 0 2 NNE 0 0 0 0 0 0 0 NE 1 0 0 0 0 0 1 ENE 1 0 0 0 0 0 1 E 4 0 0 0 0 0 4 ESE 9 0 0 0 0 0 9 SE 0 0 0 0 0 0 0 SSE 1 0 0 0 0 0 1 S 2 0 0 0 0 0 2 SSW 0 0 0 0 0 0 0 SW 2 0 0 0 0 0 2 WSW 6 6 0 0 0 0 12 W 4 4 0 0 0 0 8 WNW 2 0 0 0 0 0 2 NW 0 0 0 0 0 0 0 NNW 1 0 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 35 10 0 0 0 0 45 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: 5 48

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 0 0 0 0 0 0 0 NNE 0 1 0 0 0 0 1 NE 0 3 2 0 0 0 5 ENE 0 2 1 0 0 0 3 E 0 2 0 0 0 0 2 ESE 1 1 6 0 0 0 8 SE 0 0 0 6 0 0 6 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 1 9 9 6 0 0 25 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: 5 49

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 0 1 0 0 0 0 1 NNE 0 4 2 0 0 0 6 NE 0 3 0 0 0 0 3 ENE 0 1 3 1 0 0 5 E 0 1 0 0 0 0 1 ESE 0 3 2 0 1 0 6 SE 0 0 2 2 0 0 4 SSE 0 0 0 0 0 0 0 S 0 0 0 2 1 0 3 SSW 0 0 0 0 1 0 1 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 13 9 5 3 0 30 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: 5 50

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 0 3 3 1 0 0 7 NNE 0 7 2 0 0 0 9 NE 0 1 1 0 0 0 2 ENE 1 3 0 1 0 0 5 E 2 5 0 0 0 0 7 ESE 0 12 2 0 0 0 14 SE 0 1 4 1 1 0 7 SSE 0 1 0 1 0 0 2 S 0 3 0 4 1 0 8 SSW 0 0 2 5 1 0 8 SW 0 0 0 3 0 0 3 WSW 0 0 1 0 1 0 2 W 0 0 1 1 1 0 3 WNW 0 0 4 5 3 0 12 NW 0 0 1 2 0 0 3 NNW 0 3 3 5 1 0 12 Variable 0 0 0 0 0 0 0 Total 3 39 24 29 9 0 104 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: 5 51

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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 6 21 29 9 1 0 66 NNE 9 16 19 6 0 0 50 NE 7 20 14 3 0 0 44 ENE 5 32 21 13 1 0 72 E 13 26 38 28 18 0 123 ESE 5 21 32 18 6 2 84 SE 2 32 36 16 5 1 92 SSE 4 16 18 17 0 0 55 S 1 27 34 34 7 0 103 SSW 0 17 25 19 0 0 61 SW 4 4 17 17 2 0 44 WSW 1 4 13 15 2 0 35 W 2 7 17 25 14 1 66 WNW 1 3 7 48 27 11 97 NW 1 12 27 34 26 3 103 NNW 2 21 42 46 9 0 120 Variable 0 0 0 0 0 0 0 Total 63 279 389 348 118 18 1215 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: 5 52

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 1 12 13 2 0 0 28 NNE 0 8 26 1 0 0 35 NE 0 5 11 2 0 0 18 ENE 3 13 7 2 0 0 25 E 4 16 12 9 1 0 42 ESE 1 15 16 4 0 0 36 SE 2 19 14 1 0 0 36 SSE 2 22 28 15 0 0 67 S 2 22 11 14 2 0 51 SSW 5 21 37 21 0 0 84 SW 3 15 20 10 1 0 49 WSW 1 7 8 19 2 0 37 W 1 3 5 14 4 0 27 WNW 1 2 5 21 7 0 36 NW 1 5 13 24 3 0 46 NNW 0 8 15 17 1 0 41 Variable 0 0 0 0 0 0 0 Total 27 193 241 176 21 0 658 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: 5 53

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 0 1 2 0 0 0 3 NNE 1 0 0 0 0 0 1 NE 2 2 1 0 0 0 5 ENE 0 2 0 0 0 0 2 E 0 5 2 0 0 0 7 ESE 0 3 2 0 0 0 5 SE 1 2 0 0 0 0 3 SSE 3 2 0 0 0 0 5 S 2 0 1 0 0 0 3 SSW 2 5 8 1 0 0 16 SW 1 4 8 1 0 0 14 WSW 1 4 2 0 0 0 7 W 0 2 2 5 0 0 9 WNW 0 1 3 4 2 0 10 NW 1 1 7 4 0 0 13 NNW 1 3 4 1 0 0 9 Variable 0 0 0 0 0 0 0 Total 15 37 42 16 2 0 112 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: 5 54

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: April - June 2018 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


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N 1 0 0 0 0 0 1 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 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 SSW 0 0 1 0 0 0 1 SW 0 0 6 0 0 0 6 WSW 1 1 11 1 0 0 14 W 0 0 1 1 1 0 3 WNW 0 2 1 2 1 0 6 NW 0 3 0 0 0 0 3 NNW 1 0 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 3 6 20 4 2 0 35 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: 5 Peach Bottom Atomic Power Station 55

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Period of Record: July - September 2018 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


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N 6 14 0 0 0 0 20 NNE 7 17 0 0 0 0 24 NE 15 1 0 0 0 0 16 ENE 13 1 0 0 0 0 14 E 14 0 0 0 0 0 14 ESE 4 5 0 0 0 0 9 SE 3 10 0 0 0 0 13 SSE 1 23 8 0 0 0 32 S 0 4 5 0 0 0 9 SSW 0 2 5 0 0 0 7 SW 0 2 2 0 0 0 4 WSW 0 1 1 0 0 0 2 W 0 1 0 0 0 0 1 WNW 0 0 0 0 0 0 0 NW 0 2 0 0 0 0 2 NNW 0 1 2 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 63 84 23 0 0 0 170 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 56

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 5 19 0 0 0 0 24 NNE 13 8 0 0 0 0 21 NE 9 0 0 0 0 0 9 ENE 14 0 0 0 0 0 14 E 6 0 0 0 0 0 6 ESE 1 1 0 0 0 0 2 SE 3 2 2 0 0 0 7 SSE 1 15 3 0 0 0 19 S 1 10 7 0 0 0 18 SSW 0 12 6 0 0 0 18 SW 0 2 2 0 0 0 4 WSW 0 2 1 0 0 0 3 W 0 2 0 0 0 0 2 WNW 0 3 0 0 0 0 3 NW 0 1 1 0 0 0 2 NNW 2 20 18 0 0 0 40 Variable 0 0 0 0 0 0 0 Total 55 97 40 0 0 0 192 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 57

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 4 5 0 0 0 0 9 NNE 4 6 0 0 0 0 10 NE 4 0 0 0 0 0 4 ENE 7 0 0 0 0 0 7 E 3 0 0 0 0 0 3 ESE 2 0 0 0 0 0 2 SE 0 1 0 0 0 0 1 SSE 0 5 6 0 0 0 11 S 1 9 3 0 0 0 13 SSW 2 4 1 0 0 0 7 SW 0 2 0 0 0 0 2 WSW 0 2 1 0 0 0 3 W 0 3 0 0 0 0 3 WNW 0 3 0 0 0 0 3 NW 0 1 0 0 0 0 1 NNW 3 10 3 0 0 0 16 Variable 0 0 0 0 0 0 0 Total 30 51 14 0 0 0 95 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 58

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 52 24 11 0 0 0 87 NNE 44 27 0 0 0 0 71 NE 40 1 0 0 0 0 41 ENE 28 0 0 0 0 0 28 E 23 0 0 0 0 0 23 ESE 9 5 0 0 0 0 14 SE 6 21 9 0 0 0 36 SSE 7 60 51 0 0 0 118 S 10 49 12 0 0 0 71 SSW 9 23 0 0 0 0 32 SW 5 9 4 0 0 0 18 WSW 6 15 3 0 0 0 24 W 4 16 1 0 0 0 21 WNW 9 26 2 0 0 0 37 NW 14 13 4 0 0 0 31 NNW 23 44 14 0 0 0 81 Variable 0 0 0 0 0 0 0 Total 289 333 111 0 0 0 733 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: 1 59

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 40 23 1 0 0 0 64 NNE 47 19 1 0 0 0 67 NE 29 1 0 0 0 0 30 ENE 21 0 0 0 0 0 21 E 32 5 0 0 0 0 37 ESE 17 3 0 0 0 0 20 SE 19 8 0 0 0 0 27 SSE 29 12 1 0 0 0 42 S 36 20 0 0 0 0 56 SSW 30 7 0 0 0 0 37 SW 20 10 3 0 0 0 33 WSW 30 20 1 0 0 0 51 W 28 21 2 0 0 0 51 WNW 26 14 0 0 0 0 40 NW 36 28 1 0 0 0 65 NNW 31 25 3 0 0 0 59 Variable 0 0 0 0 0 0 0 Total 471 216 13 0 0 0 700 Hours of calm in this stability class: 29 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 60

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 4 0 0 0 0 0 4 NNE 3 0 0 0 0 0 3 NE 4 0 0 0 0 0 4 ENE 3 0 0 0 0 0 3 E 6 0 0 0 0 0 6 ESE 2 0 0 0 0 0 2 SE 0 0 0 0 0 0 0 SSE 4 0 0 0 0 0 4 S 5 1 0 0 0 0 6 SSW 16 1 0 0 0 0 17 SW 19 0 0 0 0 0 19 WSW 43 5 0 0 0 0 48 W 45 4 0 0 0 0 49 WNW 23 1 0 0 0 0 24 NW 14 5 0 0 0 0 19 NNW 8 2 0 0 0 0 10 Variable 0 0 0 0 0 0 0 Total 199 19 0 0 0 0 218 Hours of calm in this stability class: 22 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 61

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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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 1 0 0 0 0 0 1 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 0 0 0 0 0 1 SW 4 0 0 0 0 0 4 WSW 17 11 0 0 0 0 28 W 6 3 0 0 0 0 9 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 29 14 0 0 0 0 43 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 62

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 0 2 0 0 0 2 ENE 0 3 1 1 0 0 5 E 0 5 0 0 0 0 5 ESE 0 3 8 0 0 0 11 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 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 11 11 1 0 0 23 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 63

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 0 2 1 0 0 0 3 NNE 0 4 0 0 0 0 4 NE 0 1 0 0 0 0 1 ENE 0 1 0 0 0 0 1 E 0 3 0 0 0 0 3 ESE 0 6 4 0 0 0 10 SE 0 0 6 0 0 0 6 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 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 18 11 0 0 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: 1 64

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 0 0 4 0 0 0 4 NNE 1 4 1 0 0 0 6 NE 2 5 0 0 0 0 7 ENE 1 5 0 0 0 0 6 E 0 5 0 0 0 0 5 ESE 0 2 2 1 0 0 5 SE 0 2 10 0 0 0 12 SSE 0 0 1 0 0 0 1 S 0 2 3 0 0 0 5 SSW 0 0 4 1 0 0 5 SW 0 1 2 0 0 0 3 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 1 0 0 1 Variable 0 0 0 0 0 0 0 Total 4 26 27 3 0 0 60 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 65

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 9 32 13 12 1 0 67 NNE 5 24 8 14 5 0 56 NE 18 22 14 11 1 0 66 ENE 18 27 24 12 0 0 81 E 12 26 33 13 1 0 85 ESE 7 11 25 27 1 0 71 SE 5 16 35 57 6 0 119 SSE 2 11 32 17 0 0 62 S 1 10 51 27 0 0 89 SSW 1 8 44 9 0 0 62 SW 1 12 14 3 0 0 30 WSW 2 9 17 2 1 0 31 W 1 5 23 1 0 0 30 WNW 2 6 23 5 0 0 36 NW 3 18 15 13 0 0 49 NNW 6 28 48 19 0 0 101 Variable 0 0 0 0 0 0 0 Total 93 265 419 242 16 0 1035 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 66

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 3 17 33 14 0 0 67 NNE 5 12 12 4 0 0 33 NE 1 13 9 6 1 3 33 ENE 6 37 23 1 3 2 72 E 2 22 17 18 0 0 59 ESE 7 13 23 6 2 0 51 SE 6 11 10 3 0 0 30 SSE 7 18 20 6 0 0 51 S 7 29 43 16 1 0 96 SSW 4 24 36 11 0 0 75 SW 3 16 16 2 2 0 39 WSW 2 15 14 6 1 0 38 W 4 10 21 20 0 0 55 WNW 6 8 9 5 1 0 29 NW 4 11 10 22 0 0 47 NNW 3 9 19 18 0 0 49 Variable 0 0 0 0 0 0 0 Total 70 265 315 158 11 5 824 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 67

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 3 5 2 0 0 0 10 NNE 2 1 1 0 0 0 4 NE 3 1 0 0 0 0 4 ENE 4 1 0 0 0 0 5 E 2 0 1 0 0 0 3 ESE 2 2 0 0 0 0 4 SE 1 6 3 0 0 0 10 SSE 0 5 4 0 0 0 9 S 2 9 8 0 0 0 19 SSW 2 10 8 0 0 0 20 SW 2 12 4 1 0 0 19 WSW 0 10 8 5 0 0 23 W 1 9 16 2 0 0 28 WNW 2 5 6 1 0 0 14 NW 11 6 14 5 0 0 36 NNW 4 6 5 2 0 0 17 Variable 0 0 0 0 0 0 0 Total 41 88 80 16 0 0 225 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 68

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: July - September 2018 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


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N 0 2 0 0 0 0 2 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 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 0 0 0 0 0 0 0 SW 0 0 1 0 0 0 1 WSW 0 0 1 0 0 0 1 W 0 0 2 0 0 0 2 WNW 0 0 0 0 0 0 0 NW 0 0 1 0 0 0 1 NNW 0 3 0 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 6 5 0 0 0 11 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 1 Peach Bottom Atomic Power Station 69

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Period of Record: October - December 2018 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


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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 0 0 0 0 2 E 6 1 0 0 0 0 7 ESE 2 4 0 0 0 0 6 SE 0 4 0 0 0 0 4 SSE 0 0 0 0 0 0 0 S 0 1 2 0 0 0 3 SSW 0 0 2 0 0 0 2 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 3 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 10 10 7 0 0 0 27 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: 5 70

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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N 0 0 3 0 0 0 3 NNE 1 0 0 0 0 0 1 NE 0 0 0 0 0 0 0 ENE 8 0 0 0 0 0 8 E 5 1 0 0 0 0 6 ESE 4 3 0 0 0 0 7 SE 0 6 0 0 0 0 6 SSE 0 1 0 0 0 0 1 S 0 7 4 0 0 0 11 SSW 0 2 4 0 0 0 6 SW 0 1 2 0 0 0 3 WSW 0 1 5 0 0 0 6 W 0 1 5 1 0 0 7 WNW 0 2 2 2 0 0 6 NW 0 1 9 0 0 0 10 NNW 0 6 24 9 0 0 39 Variable 0 0 0 0 0 0 0 Total 18 32 58 12 0 0 120 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: 5 71

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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N 0 1 0 0 0 0 1 NNE 1 1 1 0 0 0 3 NE 3 0 0 0 0 0 3 ENE 1 0 0 0 0 0 1 E 3 0 0 0 0 0 3 ESE 1 0 0 0 0 0 1 SE 2 1 2 0 0 0 5 SSE 0 3 3 0 0 0 6 S 2 4 5 0 0 0 11 SSW 0 1 2 0 0 0 3 SW 0 2 1 0 0 0 3 WSW 0 3 2 0 0 0 5 W 0 2 10 1 0 0 13 WNW 0 8 13 11 0 0 32 NW 0 3 4 1 0 0 8 NNW 0 5 16 4 0 0 25 Variable 0 0 0 0 0 0 0 Total 13 34 59 17 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: 5 72

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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N 13 26 3 0 0 0 42 NNE 23 23 4 0 0 0 50 NE 27 18 0 0 0 0 45 ENE 22 8 0 0 0 0 30 E 26 5 0 0 0 0 31 ESE 18 16 1 0 0 0 35 SE 15 33 10 3 0 0 61 SSE 23 48 8 1 0 0 80 S 15 34 20 3 0 0 72 SSW 11 24 5 0 0 0 40 SW 10 14 6 0 0 0 30 WSW 8 20 3 0 0 0 31 W 4 39 27 1 0 0 71 WNW 4 39 94 26 0 0 163 NW 7 40 78 14 0 0 139 NNW 5 26 79 14 0 0 124 Variable 0 0 0 0 0 0 0 Total 231 413 338 62 0 0 1044 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: 5 73

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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N 14 9 0 0 0 0 23 NNE 4 3 1 0 0 0 8 NE 18 10 0 0 0 0 28 ENE 26 12 0 0 0 0 38 E 31 5 0 0 0 0 36 ESE 27 4 0 0 0 0 31 SE 37 11 2 0 0 0 50 SSE 19 14 0 0 0 0 33 S 19 13 1 0 0 0 33 SSW 14 6 0 0 0 0 20 SW 12 10 0 0 0 0 22 WSW 22 53 1 0 0 0 76 W 21 77 11 0 0 0 109 WNW 14 44 1 0 0 0 59 NW 15 33 2 0 0 0 50 NNW 11 29 2 1 0 0 43 Variable 0 0 0 0 0 0 0 Total 304 333 21 1 0 0 659 Hours of calm in this stability class: 9 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 5 74

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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N 4 0 0 0 0 0 4 NNE 4 0 0 0 0 0 4 NE 3 0 0 0 0 0 3 ENE 3 0 0 0 0 0 3 E 11 2 0 0 0 0 13 ESE 18 0 0 0 0 0 18 SE 5 0 0 0 0 0 5 SSE 3 0 0 0 0 0 3 S 6 0 0 0 0 0 6 SSW 3 0 0 0 0 0 3 SW 3 4 0 0 0 0 7 WSW 18 22 0 0 0 0 40 W 28 15 0 0 0 0 43 WNW 9 1 0 0 0 0 10 NW 5 2 0 0 0 0 7 NNW 10 0 0 0 0 0 10 Variable 0 0 0 0 0 0 0 Total 133 46 0 0 0 0 179 Hours of calm in this stability class: 10 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 5 75

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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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 1 0 0 0 0 0 1 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 2 0 0 0 0 0 2 SSE 1 0 0 0 0 0 1 S 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 4 1 0 0 0 0 5 WSW 6 8 0 0 0 0 14 W 3 4 0 0 0 0 7 WNW 1 0 0 0 0 0 1 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 18 13 0 0 0 0 31 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: 5 76

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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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 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 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 0 0 0 0 0 0 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 5 77

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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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 0 0 0 0 0 ESE 0 0 1 0 0 0 1 SE 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 S 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 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 0 1 0 0 0 1 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 5 78

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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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 1 0 0 0 0 1 ESE 0 2 0 0 0 0 2 SE 0 0 2 0 0 0 2 SSE 0 0 0 0 0 0 0 S 0 0 0 1 0 0 1 SSW 0 0 2 0 0 0 2 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 1 0 0 1 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 3 4 2 0 0 9 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: 5 79

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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N 2 10 17 12 0 0 41 NNE 2 11 14 4 0 0 31 NE 0 10 5 9 6 0 30 ENE 6 8 12 10 1 0 37 E 7 12 8 3 0 0 30 ESE 10 21 12 10 0 0 53 SE 1 25 29 23 2 4 84 SSE 1 7 25 9 1 0 43 S 2 21 34 27 16 0 100 SSW 2 2 24 14 0 0 42 SW 0 10 21 8 1 0 40 WSW 0 8 17 12 1 0 38 W 0 6 19 37 32 3 97 WNW 0 10 27 77 71 19 204 NW 1 9 29 94 38 18 189 NNW 1 5 42 52 12 3 115 Variable 0 0 0 0 0 0 0 Total 35 175 335 401 181 47 1174 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 3 Hours of missing stability measurements in all stability classes: 5 80

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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N 1 8 13 4 0 0 26 NNE 4 8 6 3 0 0 21 NE 0 5 12 3 2 0 22 ENE 3 8 11 11 3 0 36 E 2 13 17 1 0 0 33 ESE 1 11 31 7 1 0 51 SE 2 19 36 8 0 2 67 SSE 0 27 23 7 0 0 57 S 2 20 36 11 1 0 70 SSW 1 11 23 4 0 0 39 SW 1 6 17 20 0 0 44 WSW 1 9 15 18 4 0 47 W 3 8 24 52 3 1 91 WNW 0 10 22 52 4 0 88 NW 0 7 20 37 5 0 69 NNW 2 9 30 15 2 0 58 Variable 0 0 0 0 0 0 0 Total 23 179 336 253 25 3 819 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: 5 81

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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N 3 6 2 0 0 0 11 NNE 0 2 1 0 0 0 3 NE 0 2 0 0 0 0 2 ENE 0 2 0 0 0 0 2 E 0 2 0 0 0 0 2 ESE 0 3 2 1 0 0 6 SE 0 6 7 1 0 0 14 SSE 0 9 9 0 0 0 18 S 0 3 4 0 0 0 7 SSW 3 4 5 0 0 0 12 SW 2 2 2 1 0 0 7 WSW 3 3 4 3 0 0 13 W 0 4 14 6 6 0 30 WNW 2 3 12 7 1 0 25 NW 1 3 6 3 0 0 13 NNW 1 7 2 0 0 0 10 Variable 0 0 0 0 0 0 0 Total 15 61 70 22 7 0 175 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: 5 82

Peach Bottom Atomic Power Station Licensee: Exelon Generation Company, LLC Unit 2 and 3 PSEG Nuclear, LLC Peach Bottom Atomic Power Station Period of Record: October - December 2018 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


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N 0 1 0 0 0 0 1 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 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 1 0 0 0 1 SSE 0 1 1 1 0 0 3 S 0 2 0 0 0 0 2 SSW 0 0 0 0 0 0 0 SW 0 1 0 0 0 0 1 WSW 0 1 1 0 0 0 2 W 0 0 5 2 0 0 7 WNW 0 1 0 1 0 0 2 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 8 8 4 0 0 20 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: 5 83