ML17117A560

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LaSalle County, Units 1 and 2 - Transmittal of 2016 Annual Radioactive Effluent Release Report, Part 1
ML17117A560
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 04/27/2017
From: Trafton W J
Exelon Generation Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML17117A559 List:
References
RA17-040
Download: ML17117A560 (77)
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Text

Exelon Generation RA17-040 April 27, 2017 U.S. Nuclear Regulatory Commission Attention:

Document Control Desk Washington, D.C. 20555 LaSalle County Station, Units 1 and 2 LaSalle County Station 2601 North 2151 Road Marseilles, IL 61341 815-415-2000 Telephone www.exeloncorp.com 10 CFR 50.36a Renewed Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374

Subject:

2016 Annual Radioactive Effluent Release Report Enclosed is the Exelon Generation

Company, LLC, 2016 Annual Radioactive Effluent Release Report for LaSalle County Station, submitted in accordance with 1 O CFR 50.36a, "Technical specifications on effluents from nuclear power reactors,"

paragraph (a)(2), and Technical Specifications 5.6.3, "Radioactive Effluent Release Report."

There are no regulatory commitments in this letter. Should you have any questions concerning this report, please contact Mr. Guy V. Ford, Jr., Regulatory Assurance

Manager, at (815) 415-2800.

il:lU:' William J. Trafton Site Vice President LaSalle Col!nty Station

Enclosure:

LaSalle County Nuclear Power Station Annual Radiological Effluent Release Report (ARERR) 2016

  • cc: Regional Administrator

-NRC Region Ill NRC Senior Resident Inspector

-LaSalle County Station LASALLE COUNTY NUCLEAR POWER STATION ANNUAL RADIOLOGICAL EFFLUENT RELEASE REPORT (ARERR) 2016 Page I of 76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SUPPLEMENT AL INFORMATION I. Regulatory Limits a. Gaseous Effluents

1) The air dose due to noble gases released in gaseous effluents, from each reactor unit, from the site shall be limited to the following:

a) During any calendar quarter:

Less than or equal to 5 mrad for gamma radiation and less than or equal to l 0 mrad for beta radiation, and b) During any calendar year: Less than or equal to 10 mrad for gamma radiation and less than or equal to 20 mrad for beta radiation.

2) The dose to an individual from radioiodines and radioactive materials in particulate form, and radionuclides, other than noble gases, with half-lives greater than eight days in gaseous effluents
released, from each reactor unit, from the site shall be limited to the following:

a) During any calendar quarter:

Less than or equal to 7 .5 mRem to any organ, and b) During any calendar year: Less than or equal to 15 mRem to any organ. b. Liquid Effluents l) The dose or dose commitment to an individual from radioactive materials in liquid effluents

released, from each reactor unit, from the site shall be limited:

a) During any calendar quarter:

Less than or equal to I .5 mRem to the total body and to less than or equal to 5 mRem to any organ, and b) During any calendar year: Less than or equal to 3 mRem to the total body and to less than or equal to IO mRem to any organ. c. Total Dose 1) The dose or dose commitment to any member of the public, due to releases or radioactivity and radiation, from uranium fuel cycle sources shall be limited to less than or equal to 25 mRem to the body or any organ (except the thyroid, which shall be limited to less than or equal to 75 mRem) over 12 consecutive months. 2. Allowable Concentrations

a. Gaseous Effluents I) The dose rate due to radioactive materials released in gaseous effluents from the site shall be limited to the following:

a) For noble gases: Less than or equal to 500 mRem/year to the total body and less than or equal to 3000 mRem/year to the skin, and b) For all radioiodines and for all radioactive materials in particulate form, and radionuclides, other than noble gases, with half-lives greater than eight days: Less than or equal to 1500 mRem/year to any organ via the inhalation pathway.

Page 2 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SUPPLEMENT AL INFORMATION

b. Liquid Effluents I) The concentration of radioactive material released from the site shall be limited to ten (I 0) times the concentrations specified in I 0 CFR Part 20, Appendix B, Table II, Column 2 for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to the following:

Nuclide DWC (µCi/mL)

Kr-85m 2.00E-04 Kr-85 5.00E-04 Kr-87 4.00E-05 Kr-88 9.00E-05 Xe-131m 7.00E-04 Xe-133m 5.00E-04 Xe-133 6.00E-04 Xe-135m 2.00E-04 Xe-135 2.00E-04 Ar-41 7.00E-05

3. Average Energy I) Not applicable

-average energy is no longer used to determine dose to the public. 4. Measurements and Approximations of Total Radioactivity

a. Gaseous Effluents I) The Containment Vent and Purge System is sampled by grab sample, which is analyzed for principal gamma emitters and H-3. 2) The Main Vent Stack (Station Vent Stack) is sampled by grab sample, which is analyzed for principal gamma emitters and H-3. 3) Standby Gas Treatment (SBGT) System is sampled by grab sample, which is analyzed for principal gamma emitters.
4) All release types as listed in 4.a. I) and 4.a.2) above are sampled at the Station Vent Stack (SYS) Wide Range Gas Monitor (WRGM), and those listed in 4.a.3) above are sampled at the Standby Gas Treatment (SBGT) System WRGM whenever there is flow. These effluents are continuously sampled by charcoal cartridge and particulate filter paper, which are analyzed for iodines and principal gamma emitters.

Particulate filter papers are composited and analyzed for gross alpha, Fe-55, Sr-89 and Sr-90. Noble gases, gross beta and gamma are continuously monitored by noble gas monitors for the SYS and the SBGT System. 5) The LaSalle County Station estimate of I 7 .24 Ci/Unit/year of C-I 4 (as total C-14 released) is based upon a normalized C-14 production rate of 5.1 Ci/GWt-yr, a gaseous release fraction of 0.99, a reactor power rating of 3546 MWt (per Unit) and equivalent full power operation of 35 I .5 days (per Unit). b. Liquid Effluents

1) Batch waste release tanks are sampled each batch for principal gamma emitters, I-131, dissolved and entrained noble gases, H-3, gross alpha, Sr-89, Sr-90 and Fe-55. Page 3of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SUPPLEMENT AL INFORMATION
2) Continuous releases are sampled continuously in proportion to the rate of flow of the effluent stream and by grab sample. Samples are analyzed for principal gamma emitters, 1-131, dissolved and entrained noble gases, H-3, gross alpha, Sr-89, Sr-90 and Fe-55. 5. Batch Releases
a. Gaseous I) Number of batch releases:

None 2) Total time period for batch releases:

NIA 3) Maximum time period for a batch release:

NIA 4) Average time period for batch releases:

NIA 5) Minimum time period for a batch release:

NIA b. Liquid l) Number of batch releases:

None 2) Total time period for batch releases:

Min. NIA 3) Maximum time period for a batch release:

Min. NIA 4) Average time period for batch releases:

Min. NI A 5) Minimum time period for a batch release:

Min. NIA 6) Average stream flow during periods of release of effluent into a flowing stream: gpm NI A 6. Abnormal Releases

a. Gaseous l) Number of releases:

None 2) Total activity released:

NIA b. Liquid 1) Number of releases:

None 2) Total activity released:

NIA 7. Process Control Program There were no changes to the Process Control Program (RW-AA-100),

processing

systems, or components.

There was no use of a solidification agent (e.g. cement, urea formaldehyde, etc.) during the processing of solid radioactive waste. Page 4 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SUPPLEMENT AL INFORMATION

8. Effluent Monitoring Instrumentation time clocks and sample anomalies.
a. Time clocks: There were no effluent monitoring time clocks exceeded during 2016. b. Sample anomalies:

There were no sampling anomalies affecting the measurement of effluents experienced during 2016. 9. Offsite Dose Calculation Manual (ODCM) Revisions.

There were two revisions made to the LaSalle Station ODCM in 2016. Revision 7 included REMP (Radiological Environmental Monitoring Program) sampling changes and the addition of various editorial and grammatical enhancements.

A discussion around changes that were implemented on Unit 2 with the completion of Engineering Change (EC) 38723 7, Removal of Off gas Vulnerabilities on Valve 2N62-F057, was added, also. Additionally, a change to the minimum analysis frequency for the Containment Vent and Purge System gaseous tritium analysis was implemented.

A copy of the ODCM Change Summary Matrix for revision 7 has been included as Appendix A to this report. Also, a copy of ODCM revision 7 has been included as Appendix B to this report. All changes in revision 7 to the ODCM became effective 01114/2016.

Revision 8 included a discussion around changes that were implemented on Unit 1 with the completion of Engineering Change (EC) 387161, Removal ofOffgas Vulnerabilities on Valve 1N62-F057, and various editorial and grammatical enhancements.

A copy of the ODCM Change Summary Matrix for revision 8 has been included as Appendix C to this report. Also, a copy of revision 8 of the ODCM has been included as Appendix D to this report. All changes in revision 8 to the LaSalle Station ODCM became effective 06/16/2016.

Each of the above ODCM changes was assessed by a change determination, in accordance with ODCM revision procedures.

The change determinations ensure that the changes will not adversely impact accuracy or reliability of effluent, dose, or set point calculations and will maintain the level of radiological effluent controls established by regulatory requirements.

No adverse impact was identified by the change determinations.

10. Independent Spent Fuel Storage Installation (ISFSI).

During the period April 1, 2016 to April 1, 2017, no radioactive effluents were released from the LaSalle Nuclear Station Independent Spent Fuel Storage Installation (ISFSI).

Also, during this period, zero (0) new casks were transferred to the outdoor concrete ISFSI storage pad. Page 5of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) UNIT I AND UNIT 2 DOCKET NUMBERS 50-373 AND 50-374 GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES A. Fission & Activation Gases Unit Quarter 1 Quarter 2 Quarter 3 1. Total Release Ci 6.23E+02 8.47E+02 8.68E+02

2. Average release rate for the period µCi/sec 7.92E+01 1.08E+02 1.09E+02
3. Percent of ODCM limit % * *
  • B. Iodine 1. Total Iodine -131 Ci 5.84E-03 6.95E-03 6.10E-03
2. Average release rate for the period µCi/sec 7.42E-04 8.84E-04 7.68E-04
3. Percent of ODCM limit % * *
  • C. Particulates
1. Particulates with half-lives

> 8 days Ci 8.32E-04 2.23E-03 2.15E-03

2. Average release rate for the period µCi/sec 1.06E-04 2.83E-04 2.71 E-04 3. Percent of ODCM limit % * *
  • D. Tritium 1. Total Release Ci 7.81 E-01 6.02E+OO 8.38E+OO
2. Average release rate for the period µCi/sec 9.93E-02 7.65E-01 1.05E+OO
3. Percent of ODCM limit % * *
  • E. Gross Alpha 1. Total Release Ci <LLD <LLD <LLD
2. Average release rate for the period µCi/sec <LLD <LLD <LLD
3. Percent of ODCM limit % * *
1. Total Release Ci 8.62E+OO 8.62E+OO 8.62E+OO
2. Average release rate for the period µCi/sec 1.10E+OO 1.10E+OO 1.09E+OO
3. Percent of ODCM limit % * * * "*" This information is contained in the Radiological Impact on Man section of the report. "<"Indicates activity of sample is less than LLD given in µCi/ml Page 6of76 Quarter4 Est. Total Error% 6.01E+02 2.50E+01 7.56E+01
  • 5.70E-03 1.50E+01 I 7.17E-04
  • 6.90E-04 3.50E+01 I 8.68E-05
  • 8.11 E+OO 1.50E+01 I 1.02E+OO
  • <LLD N/A I <LLD
  • 8.62E+OO 1.09E+OO
  • Nuclides Released A. Fission gases Kr-85m Kr-87 Kr-88 Xe-131m Xe-133m Xe-133 Xe-135 Xe-135m Xe-138 Ar-41 Total for Period B. Iodines 1-131 1-132 1-133 1-134 1-135 Total for Period Tot.1-131,1-133,1-135 C. Particulates Mn-54 Fe-55 Co-58 Fe-59 Co-60 Zn-65 Sr-89 Sr-90 Nb-95 Mo-99 Cs-134 Cs-137 Ba-140 La-140 Ce-141 Ce-144 Total for Period D. Tritium H-3 Total for Period E. Gross Afpha Gross Alpha Total for Period F. Carbon-14 C-14 Total for Period LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) GASEOUS EFFLUENTS ELEVATED RELEASE UNIT l AND UNIT 2 Continuous Mode Batch Mode Unit Quarter Quarter Quarter Quarter Quarter Quarter Quarter 1 2 3 4 1 2 3 Ci 1.80E+02 2.26E+02 1.84E+02 1.52E+02 N/A N/A N/A Ci <LLD 3.80E+OO 4.78E+OO 1.06E+01 N/A N/A N/A Ci 2.29E+02 2.94E+02 3.03E+02 2.23E+02 N/A N/A N/A Ci <LLD <LLD 1.28E+02

<LLD N/A N/A N/A Ci <LLD <LLD <LLD

<LLD N/A N/A N/A Ci 2.05E+02 3.23E+02 2.40E+02 2.13E+02 N/A NIA N/A Ci 3.69E+OO

<LLD 2.78E+OO 2.71E*OO N/A N/A N/A Ci 5.29E+OO

<LLD 5.59E+OO

<LLD N/A N/A N/A Ci <LLD <LLD <LLD <LLD N/A N/A N/A Ci 6.53E-02

<LLD <LLD <LLD N/A N/A N/A Ci 6.23E+02 8.47E+02 8.68E+02 6.01E+02 N/A NIA NIA Ci 5.84E-03 6.95E-03 6.10E-03 5.70E-03 N/A N/A N/A Ci 8.00E-03 1.25E-02 1.06E-02 1.73E-02 N/A N/A N/A Ci 1.51E-02 2.37E-02 2.28E-02 2.36E-02 N/A N/A NIA Ci <LLD 2.83E-03 4.55E-03 4.22E-03 N/A NIA NIA Ci 6.09E-03 2.05E-02 2.45E-02 2.61E*02 N/A NIA N/A Ci 3.50E-02 6.65E-02 6.86E-02 7.70E-02 N/A N/A N/A Ci 2.70E-02 5.12E-02 5.34E-02 5.54E-02 N/A N/A N/A Ci <LLD <LLD <LLD

<LLD N/A N/A N/A Ci <LLD <LLD <LLD <LLD N/A N/A N/A Ci <LLD <LLD <LLD

<LLD N/A N/A N/A Ci <LLD <LLD

<LLD <LLD N/A N/A N/A Ci 1.70E-04 1.02E-04 8.35E-05 1.24E-04 N/A NIA NIA Ci <LLD <LLD <LLD

<LLD N/A NIA N/A Ci 1.64E-04 2.60E-04 2.10E-04

<LLD N/A N/A N/A Ci <LLD <LLD <LLD

<LLD N/A N/A N/A Ci 6.91E-06 <LLD <LLD

<LLD N/A N/A N/A Ci <LLD <LLD 1.29E-05 <LLD N/A N/A NIA Ci <LLD <LLD <LLD

<LLD N/A N/A N/A Ci <LLD <LLD <LLD <LLD N/A N/A N/A Ci 2.38E-04 5.32E-04 5.80E-04 7.77E-05 N/A N/A N/A Ci 2.53E-04 1.33E-03 1.27E-03 4.89E-04 N/A N/A N/A Ci <LLD <LLD <LLD <LLD N/A NIA N/A Ci <LLD <LLD <LLD <LLD N/A N/A N/A Ci 8.32E-04 2.23E-03 2.15E-03 6.90E-04 N/A N/A N/A Ci 7.81 E-01 6.02E+OO 8.38E+OO 8.11E+OO N/A N/A N/A Ci <LLD <LLD <LLD <LLD N/A N/A N/A Ci 8.62E+OO 8.62E+OO 8.62E+OO 8.62E+OO N/A NIA N/A Page 7of76 Quarter 4 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) LIQUID RELEASES UNIT I AND UNIT 2 SUMMATION OF ALL LIQUID RELEASES A. Fission & Activation Products Unit Quarter 1 Quarter 2 Quarter 3 1. Total Release (not including

tritium, gases Ci <LLD <LLD

<LLD & alpha} 2. Average diluted concentration during µCi/ml <LLD <LLD <LLD period 3. Percent of applicable limit % * *

  • B. Tritium 1. Total Release Ci <LLD <LLD <LLD
2. Average diluted concentration during µCi/ml <LLD <LLD <LLD period 3. Percent of applicable limit % * *
  • C. Dissolved

& Entrained Gases 1. Total Release Ci <LLD <LLD <LLD 2. Average diluted concentration during µCi/ml <LLD <LLD <LLD period 3. Percent of applicable limit % * *

  • D. Gross Alpha Activity
1. Total Release Ci <LLD <LLD <LLD 2. Average release rate for the period µCi/ml <LLD <LLD <LLD 3. Percent of ODCM limit % * *
  • Quarter4

<LLD <LLD * <LLD <LLD * <LLD <LLD * <LLD <LLD

  • E. Volume of Waste Released (prior to dilution)

Liters 0.00E+OO O.OOE+OO 0.00E+OO O.OOE+OO F. Volume of Dilution Water Used During Period Liters 0.00E+OO O.OOE+OO 0.00E+OO O.OOE+OO "*" This information is contained in the Radiological Impact on Man section of the report. "<"Indicates activity of sample is less than LLD given in µCi/ml Page 8of76 Est. Total Error% N/A N/A I N/A I N/A I Nuclides Released A. Fission & Activation Products Unit Mn-54 Ci Fe-55 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Sr-89 Ci Sr-90 Ci Mo-99 Ci 1-131 Ci Cs-134 Ci Cs-137 Ci Ce-141 Ci Ce-144 Ci Total for Period Ci B. H-3 H-3 Total for Period Ci C. Dissolved

& Entrained Gasses Kr-85m Ci Kr-85 Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133m Ci Xe-133 Ci Xe-135m Ci Xe-135 Ci Ar-41 Ci Total for Period Ci D. Gross Alpha Gross Alpha Total for Ci Period LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) LIQUID RELEASES UNIT 1 AND UNIT 2 Continuous Mode Batch Mode " -Quarter Quarter Quarter Quarter Quarter Quarter 1 2 3 4 1 2 3 <LLD <LLD

<LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD

<LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD <LLD

<LLD N/A N/A N/A <LLD <LLD <LLD

<LLD N/A N/A N/A <LLD <LLD <LLD

<LLD N/A N/A N/A <LLD <LLD <LLD

<LLD N/A N/A N/A <LLD <LLD

<LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD <LLD

<LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD

<LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD <LLD

<LLD N/A N/A N/A <LLD <LLD

<LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD

<LLD <LLD N/A N/A N/A <LLD <LLD

<LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD

<LLD <LLD N/A N/A N/A <LLD <LLD

<LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A <LLD <LLD <LLD <LLD N/A N/A N/A Page 9of76 Quarter 4 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS FIRST QUARTER A. Solid Waste Shipped Offsite for Burial or Disposal (Not irradiated fuel) 1. Types of Waste Total Quantity Total Types of Waste (ma) Activity (Ci) Period a. Spent resins, filter sludges, evaporator

bottoms, None None 1015 etc. b. Drv compressible waste, contaminated equip, etc. 7.95E+02 1.19E+OO 1015 c. Irradiated components, control rods, etc. None None 1015 d. Other (Oil, EHC fluid, sump waste, etc.) None None 1015 2. Estimate of major nuclide composition (by waste type) Percent Abundance Maior Nuclide Composition

(;;::1%)

a. Spent resins, filter sludges, evaporator
bottoms, etc. None N/A b. Dry compressible waste, contaminated equip, etc. Mn-54 1.35% Fe-55 33.92% Co-60 61.68% Zn-65 1.03% c. Irradiated components, control rods, etc. None N/A d. Other (Oil, EHC fluid, sump waste etc.) None N/A Page 10of76 Est. Total Error(%)

N/A +/-25% N/A N/A Shipment Type(s) N/A LSA N/A N/A LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS FIRST QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 13 Hittman Transport Energy Solutions

-Bear Creek Facility, Oak RidQe, TN B. Irradiated Fuel Shipments (disposition)

Number of Shipments Mode of Transportation Destination None N/A N/A C. Changes to the Process Control Program There were no changes to the Process Control Program during this period. There was no use of a solidification agent (e.g. cement, urea formaldehyde, etc.) during the processing of solid radioactive waste. Page 11 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS SECOND QUARTER A. Solid Waste Shipped Offsite for Burial or Disposal (Not irradiated fuel) 1. Types of Waste Total Quantity Total Types of Waste (m3) Activity (Ci) Period a. Spent resins, filter sludges, evaporator

bottoms, 5.65E+OO 2.96E+02 2015 etc. b. Drv compressible waste, contaminated equip, etc. 6.95E+01 4.02E+OO 2015 c. Irradiated components, control rods, etc. None None 2015 d. Other (Oil, EHC fluid, sump waste, etc.) None None 2015 2. Estimate of major nuclide composition (by waste type) Percent Abundance Major Nuclide Composition

(;:::::1%)

a. Spent resins, filter sludges, evaporator
bottoms, etc. Fe-55 29.07% Co-60 68.11% b. Dry compressible waste, contaminated equip, etc. Mn-54 1.37% Fe-55 33.96% Co-60 61.56% Zn-65 1.05% c. Irradiated components, control rods, etc. None N/A d. Other (Oil, EHC fluid, sump waste etc.) None N/A Page 12of76 Est. Total Error(%)

+/-25% +/-25% N/A N/A Shipment Type(s) LSA LSA N/A N/A LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS SECOND QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 4 Hittman Transport Energy Solutions

-Bear Creek Facilitv, Oak Ridge, TN 2 Interstate Ventures Waste Control Specialists

-Texas Compact Waste Facility, Andrews County, TX B. Irradiated Fuel Shipments (disposition)

Number of Shi ments Mode of Trans ortation Destination None N/A N/A C. Changes to the Process Control Program There were no changes to the Process Control Program during this period. There was no use of a solidification agent (e.g. cement, urea formaldehyde, etc.) during the processing of solid radioactive waste. Page 13of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS THIRD QUARTER A. Solid Waste Shipped Offsite for Burial or Disposal (Not irradiated fuel) 1. Types of Waste Total Quantity Total Types of Waste (ma) Activity (Ci) Period a. Spent resins, filter sludges, evaporator

bottoms, 4.16E+01 5.56E+02 3015 etc. b. Dry compressible waste, contaminated equip, etc. 1.49E+02 1.47E+01 3015 c. Irradiated components, control rods, etc. None None 3015 d. Other (Oil, EHC fluid, sump waste, etc.) None None 3015 2. Estimate of major nuclide composition (by waste type) Percent Abundance Major Nuclide Composition
a. Spent resins, filter sludges, evaporator
bottoms, etc. Fe-55 25.65% Co-60 70.43% Ni-63 1.39% b. Dry compressible waste, contaminated equip, etc. Mn-54 1.37% Fe-55 33.96% Co-60 61.56% Zn-65 1.05% c. Irradiated components, control rods, etc. None N/A d. Other (Oil, EHC fluid, sump waste, etc.) None N/A Page 14of76 Est. Total Error(%)

+/-25% +/-25% N/A N/A Shipment Type(s) LSA LSA N/A N/A LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS THIRD QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 5 Hittman Transport Energy Solutions

-Bear Creek Facility, Oak RidQe, TN 6 Hittman Transport Energy Solutions, Clive Facility, Tooele County, UT 5 Interstate Ventures Waste Control Specialists

-Texas Compact Waste Facility, Andrews County, TX B. Irradiated Fuel Shipments (disposition)

Number of Shi ments Mode of Trans ortation Destination None N/A N/A C. Changes to the Process Control Program There were no changes to the Process Control Program during this period. There was no use of a solidification agent (e.g. cement, urea formaldehyde, etc.) during the processing of solid radioactive waste. Page 15 of 76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS FOURTH QUARTER A. Solid Waste Shipped Offsite for Burial or Disposal (Not irradiated fuel) 1. Types of Waste Total Quantity Total Types of Waste (m3) Activity (Ci) Period a. Spent resins, filter sludges, evaporator

bottoms, 7.55E+OO 2.71 E+01 4015 etc. b. Dry compressible waste, contaminated equip, etc. 3.40E+02 1.24E+OO 4015 c. Irradiated components, control rods, etc. None None 4015 d. Other (Oil, EHC fluid, sump waste, etc.) None None 4015 2. Estimate of major nuclide composition (by waste type) Percent Abundance Major Nuclide Composition

(;::1 %) a. Spent resins, filter sludges, evaporator

bottoms, etc. Fe-55 38.96% Co-60 57.93% Ni-63 1.01% b. Dry compressible waste, contaminated equip, etc. Mn-54 1.37% Fe-55 33.95% Co-60 61.57% Zn-65 1.05% c. Irradiated components, control rods, etc. None N/A d. Other (Oil, EHC fluid, sump waste, etc.) None N/A Page 16of76 Est. Total Error% +/-25% +/-25% N/A N/A Shipment Type(s) LSA LSA N/A N/A LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS FOURTH QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 4 Hittman Transport Energy Solutions

-Bear Creek Facility, Oak Ridae, TN 2 Hittman Transport Energy Solutions, Clive Facility, Tooele County, UT 3 Landstar Energy Solutions

-Bear Creek Facility, Oak Ridae, TN B. Irradiated Fuel Shipments (disposition)

Number of Shi ments Mode of Trans ortation Destination None N/A N/A C. Changes to the Process Control Program There were no changes to the Process Control Program during this period. There was no use of a solidification agent (e.g. cement, urea formaldehyde, etc.) during the processing of solid radioactive waste. Page 17 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) RADIOLOGICAL IMPACT ON MAN MAXIMUM DOSES RESULTING FROM GASEOUS RELEASES AND COMPLIANCE STATUS Quarterly Units 1st %of 2nd %of 3rd %of 4th %of Annual %of Infant Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 7.85E-03 0.157 1.0lE-02 0.202 1.04E-02 0.207 7.72E-03 0.154 1.00E+01 0.360 Beta Air 1.00E+01 mRad 3.36E-04 0.003 4.52E-04 0.005 4.57E-04 0.005 3.47E-04 0.003 2.00E+01 0.008 NG Total Body 2.50E+OO mRem 5.23E-03 0.209 6.73E-03 0.269 6.92E-03 0.277 5.15E-03 0.206 5.00E+OO 0.481 NG Skin 7.50E+OO mRem 8.80E-03 0.117 1.13E-02 0.151 1.16E-02 0.155 8.67E-03 0.116 1.50E+01 0.270 NNG Organ 7.50E+OO mRem 2.97E-02 0.395 3.53E-02 0.471 3.13E-02 0.417 2.94E-02 0.392 1.50E+01 0.837 Quarterly Units 1st %of 2nd %of 3rd %of 4th %of Annual %of Child Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 7.85E-03 0.157 1.0lE-02 0.202 1.04E-02 0.207 7.72E-03 0.154 1.00E+01 0.360 Beta Air 1.00E+01 mRad 3.36E-04 0.003 4.52E-04 0.005 4.57E-04 0.005 3.47E-04 0.003 2.00E+01 0.008 NG Total Body 2.50E+OO mRem 5.23E-03 0.209 6.73E-03 0.269 6.92E-03 0.277 5.15E-03 0.206 5.00E+OO 0.481 NG Skin 7.50E+OO mRem 8.80E-03 0.117 1.13E-02 0.151 1.16E-02 0.155 8.67E-03 0.116 1.50E+01 0.270 NNG Organ 7.50E+OO mRem 1.24E-02 0.165 1.47E-02 0.196 1.30E-02 0.173 1.23E-02 0.163 1.50E+01 0.349 Teenager Quarterly Units 1st %of 2nd %of 3rd %of 4th %of Annual %of Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 7.85E-03 0.157 1.0lE-02 0.202 1.04E-02 0.207 7.72E-03 0.154 1.00E+01 0.360 Beta Air 1.00E+01 mRad 3.36E-04 0.003 4.52E-04 0.005 4.57E-04 0.005 3.47E-04 0.003 2.00E+01 0.008 NG Total Body 2.50E+OO mRem 5.23E-03 0.209 6.73E-03 0.269 6.92E-03 0.277 5.15E-03 0.206 5.00E+OO 0.481 NG Skin 7.50E+OO mRem 8.80E-03 0.117 1.13E-02 0.151 1.16E-02 0.155 8.67E-03 0.116 1.50E+01 0.270 NNG Organ 7.50E+OO mRem 6.19E-03 0.082 7.35E-03 0.098 6.51E-03 0.087 6.13E-03 0.082 1.50E+01 0.175 Quarterly Units 1st %of 2nd %of 3rd %of 4th %of Annual %of Adult Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 7.85E-03 0.157 1.0lE-02 0.202 1.04E-02 0.207 7.72E-03 0.154 1.00E+01 0.360 Beta Air 1.00E+01 mRad 3.36E-04 0.003 4.52E-04 0.005 4.57E-04 0.005 3.47E-04 0.003 2.00E+01 0.008 NG Total Body 2.50E+OO mRem 5.23E-03 0.209 6.73E-03 0.269 6.92E-03 0.277 5.15E-03 0.206 5.00E+OO 0.481 NG Skin 7.50E+OO mRem 8.80E-03 0.117 1.13E-02 0.151 1.16E-02 0.155 8.67E-03 0.116 1.50E+01 0.270 NNG Organ 7.50E+OO mRem 3.89E-03 0.052 4.63E-03 0.062 4.lOE-03 0.055 3.85E-03 0.051 1.50E+01 0.110 The LaSalle County Nuclear Power Station maximum expected annual dose from Carbon-14 has been calculated using the maximum gross thermal capacity at full power operation.

The resultant bounding doses are based upon site specific assumptions of source term. Page 18 of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) RADIOLOGICAL IMPACT ON MAN MAXIMUM DOSES RESULTING FROM LIQUID RELEASES AND COMPLIANCE STATUS Infant Quarterly Units 1st % of 2nd % of 3rd % of 4th % of Annual % of Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit 10CFR50 Appendix I compliance Total Body 1.50E+OO mRem O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 3.00E+OO 0.00 Organ 5.00E+OO mRem O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 1.00E+01 0.00 40CFR141 compliance (nearest public drinking water) Total Body mRem O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 4.00E+OO 0.00 Organ mRem O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 4.00E+OO 0.00 Child Quarterly Units 1st %of 2nd o/oof 3rd %of 4th o/oof Annual o/oof Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit 1 OCFR50 Appendix I compliance Total Body 1.50E+OO mRem O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 3.00E+OO 0.00 Organ 5.00E+OO mRem O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 1.00E+01 0.00 40CFR141 compliance (nearest public drinking water) Total Body mRem O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 4.00E+OO 0.00 Organ mRem O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 4.00E+OO 0.00 Teenager Quarterly Units 1st o/oof 2nd o/oof 3rd o/oof 4th o/oof Annual o/oof Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit 1 OCFR50 Appendix I compliance Total Body 1.50E+OO mRem O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 3.00E+OO 0.00 Organ 5.00E+OO mRem O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 1.00E+01 0.00 40CFR141 compliance (nearest public drinking water) Total Body mRem O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 4.00E+OO 0.00 Organ mRem O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 4.00E+OO 0.00 Adult Quarterly Units 1st o/oof 2nd o/oof 3rd o/oof 4th o/oof Annual o/oof Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit 10CFR50 Appendix I compliance Total Body 1.50E+OO mRem O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 3.00E+OO 0.00 Organ 5.00E+OO mRem O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 O.OOE+OO 0.00 1.00E+01 0.00 40CFR141 compliance (nearest public drinking water) Total Body mRem O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 4.00E+OO 0.00 Organ mRem O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 4.00E+OO 0.00 Page 19of76 Unit 1 U1 DEX U1 DTot Bone Liver Thyroid Kidney Lung Gl-LLI Unit2 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) RADIOLOGICAL IMPACT ON MAN MAXIMUM DOSES RESULTING FROM RELEASES AND COMPLIANCE STATUS 1 OCFR20 / 40CFR190 Compliance 1st 2nd 3rd 4th % Quarter Quarter Quarter Quarter Annual Annual Annual Dose Dose Dose Dose (mRem) (mRem) (mRem) (mRem)

I 6.62E-02 I 1.01 E-01 1.03E-01 1.04E-01 I 9.59E-02 I 1 .37E-01 1.34E-01 I 1.33E-01 7.05E-03 7.07E-03 7.05E-03 7.04E-03 1.59E-03 1.60E-03 1.59E-03 1.59E-03 2.97E-02 3.53E-02 3.13E-02 2.94E-02 1.60E-03 1.62E-03 1.61 E-03 1.60E-03 1.50E-03 1.50E-03 1.50E-03 1.50E-03 1.51 E-03 1.50E-03 1.50E-03 1.50E-03 Dose (mRem) I 3.74E-01 I 5.00E-01 2.82E-02 6.37E-03 1.26E-01 6.43E-03 6.00E-03 6.02E-03 Limit (mRem/yr) 40CFR190 Compliance 25 1 OCFR20 Compliance 100 40CFR190 Compliance 25 25 75 25 25 25 40CFR190 Compliance Limit 1.50 0.50 0.11 0.03 0.17 0.03 0.02 0.02 U2 DEX I 9.79E-02 I 9.47E-02 I 9.62E-02 I 9.88E-02 I

25 ...--1-.5-5---.

U2 DTot I 9.79E-02 I 9.47E-02 I 9.62E-02 I 9.88E-02 I Bone Liver Thyroid Kidney Lung Gl-LLI O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

O.OOE+OO O.OOE+OO

O.OOE+OO O.OOE+OO O.OOE+OO

O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Page 20of76 1 OCFR20 Compliance 100 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 40CFR190 Compliance 25 25 75 25 25 25 0.00 0.00 0.00 0.00 0.00 0.00 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Extremely Unstable

-200Ft-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 2 0 0 2 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 0 1 0 0 1 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 0 2 0 0 0 2 s 0 0 0 2 0 0 2 SSW 0 0 0 0 4 0 4 SW 0 0 0 0 4 0 4 WSW 0 0 1 0 2 0 3 w 0 0 1 0 0 0 1 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 5 5 10 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:

3 Page 21of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Moderately Unstable

-200Ft-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 2 1 0 0 3 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 4 1 2 0 7 SSE 0 0 2 0 0 0 2 s 0 0 0 1 0 0 1 SSW 0 0 0 1 3 0 4 SW 0 0 2 2 1 2 7 WSW 0 0 3 3 0 0 6 w 0 0 2 2 0 0 4 WNW 0 0 3 1 0 0 4 NW 0 1 2 0 0 0 3 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 1 20 12 6 2 41 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 22 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Slightly Unstable

-200Ft-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 2 1 0 0 3 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 0 0 2 1 0 0 3 E 0 0 3 0 0 0 3 ESE 0 2 0 0 1 0 3 SE 0 1 0 1 1 0 3 SSE 0 3 2 0 0 0 5 s 0 0 1 2 1 0 4 SSW 0 1 0 1 3 0 5 SW 0 1 4 3 1 1 10 WSW 0 0 5 6 2 0 13 w 0 0 4 4 0 0 8 WNW 0 1 8 11 5 0 25 NW 0 3 2 4 2 0 11 NNW 0 0 3 2 0 0 5 Variable 0 0 0 0 0 0 0 Total 0 12 36 36 16 1 101 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 23 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Neutral -200Ft-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 31 34 8 3 0 78 NNE 3 31 20 6 0 0 60 NE 1 10 7 11 0 0 29 ENE 3 10 20 16 5 0 54 E 0 7 16 4 3 3 33 ESE 0 11 7 8 7 0 33 SE 1 11 16 9 4 4 45 SSE 2 11 8 9 1 0 31 s 3 6 14 10 1 0 34 SSW 4 2 17 7 9 1 40 SW 1 5 11 18 1 5 41 WSW 4 12 17 8 3 8 52 w 0 23 41 34 10 10 118 WNW 1 20 32 127 15 0 195 NW 0 20 30 31 11 0 92 NNW 1 24 57 53 27 0 162 Variable 0 0 0 0 0 0 0 Total 26 234 347 359 100 31 1097 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 24of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Slightly Stable -200Ft-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 21 4 0 0 0 27 NNE 4 17 0 0 0 0 21 NE 0 3 4 0 0 0 7 ENE 2 4 13 1 0 0 20 E 1 17 7 5 2 0 32 ESE 2 19 12 2 1 0 36 SE 1 10 7 4 5 0 27 SSE 1 7 16 7 2 1 34 s 1 9 30 15 8 0 63 SSW 1 10 22 39 5 0 77 SW 1 8 13 16 9 0 47 WSW 0 2 18 24 8 1 53 w 2 7 17 8 15 6 55 WNW 0 11 27 8 9 4 59 NW 1 4 16 2 0 0 23 NNW 0 11 5 0 0 0 16 Variable 0 0 0 0 0 0 0 Total 19 160 211 131 64 12 597 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 25of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Moderately Stable -200Ft-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 2 0 0 0 0 2 NNE 1 0 0 0 0 0 1 NE 0 2 0 0 0 0 2 ENE 1 0 0 0 0 0 1 E 0 4 2 0 0 0 6 ESE 0 7 7 0 0 0 14 SE 2 6 11 4 0 0 23 SSE 1 6 4 1 0 0 12 s 1 7 23 5 0 0 36 SSW 2 11 19 24 1 0 57 SW 0 4 8 18 1 0 31 WSW 0 2 6 9 0 0 17 w 1 5 10 2 0 0 18 WNW 0 3 7 0 0 0 10 NW 0 0 2 0 0 0 2 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 9 59 99 63 2 0 232 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 26of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (20 I 6) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Extremely Stable -200Ft-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 0 3 1 0 0 0 4 ESE 0 12 0 0 0 0 12 SE 0 16 4 0 0 0 20 SSE 0 8 4 0 0 0 12 s 0 2 5 1 0 0 8 SSW 0 4 11 7 0 0 22 SW 0 0 2 5 0 0 7 WSW 0 0 2 6 0 0 8 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 45 29 19 0 0 93 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 27of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Extremely Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 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 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:

3 Page 28of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Moderately Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total ---------

N 0 0 0 1 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 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 1 1 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 1 0 1 2 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 29of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Slightly Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 0 0 1 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 1 0 0 1 ESE 0 0 0 0 0 0 0 SE 0 0 0 1 0 0 1 SSE 0 0 3 2 0 0 5 s 0 0 0 0 1 0 1 SSW 0 0 0 0 2 3 5 SW 0 0 0 0 1 4 5 WSW 0 0 0 1 2 0 3 w 0 0 0 0 1 0 1 WNW 0 0 0 0 0 0 0 NW 0 0 1 0 0 0 1 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 0 4 6 7 7 24 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 30of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Neutral -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total ---------

N 2 9 22 38 11 3 85 NNE 0 10 39 7 9 6 71 NE 0 6 13 8 12 0 39 ENE 0 9 8 15 9 2 43 E 1 8 10 19 7 3 48 ESE 1 6 8 3 3 8 29 SE 0 5 15 13 12 12 57 SSE 1 6 12 15 2 2 38 s 0 8 7 10 6 4 35 SSW 2 1 8 18 7 23 59 SW 1 3 10 14 12 15 55 WSW 0 8 24 13 14 14 73 w 2 9 22 27 29 30 119 WNW 1 11 16 so 80 25 183 NW 3 8 42 45 82 45 225 NNW 0 11 28 34 28 20 121 Variable 0 0 0 0 0 0 0 Total 14 118 284 329 323 212 1280 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 15 Hours of missing stability measurements in all stability classes:

3 Page 31 of 76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Slightly Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 0 4 9 3 0 16 NNE 0 3 7 8 0 0 18 NE 1 2 4 11 1 0 19 ENE 0 8 2 1 1 0 12 E 0 10 7 16 2 5 40 ESE 2 5 14 7 1 3 32 SE 1 8 6 11 9 5 40 SSE 1 2 2 9 2 12 28 s 0 3 3 24 23 19 72 SSW 0 5 5 12 33 53 108 SW 0 1 14 17 28 26 86 WSW 1 0 1 6 7 20 35 w 0 1 0 13 16 21 51 WNW 0 0 5 11 19 12 47 NW 1 3 7 27 11 3 52 NNW 0 1 2 4 7 0 14 Variable 0 0 0 0 0 0 0 Total 7 52 83 186 163 179 670 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 32of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Moderately Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 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 0 0 0 0 0 0 0 NE 0 0 2 1 0 0 3 ENE 0 1 3 0 0 0 4 E 0 0 0 1 0 0 1 ESE 0 1 3 1 3 0 8 SE 0 2 3 6 4 2 17 SSE 0 1 2 14 8 3 28 s 0 0 3 4 3 0 10 SSW 0 0 1 3 8 19 31 SW 0 0 2 9 5 13 29 WSW 0 0 0 1 1 13 15 w 0 0 0 2 2 6 10 WNW 0 0 1 1 0 0 2 NW 0 0 0 0 0 0 0 NNW 0 1 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 7 20 43 34 56 160 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 33of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: January -March 2016 Stability Class -Extremely Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 NE 0 1 0 0 0 0 1 ENE 0 0 1 0 0 0 1 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 3 0 0 3 SSE 0 0 0 2 0 0 2 s 0 0 3 5 1 0 9 SSW 0 0 0 5 3 0 8 SW 0 0 0 0 1 3 4 WSW 0 0 0 0 0 2 2 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 1 4 15 5 5 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:

3 LaSalle County Generating Station Page 34of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Extremely Unstable

-200Ft-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 6 3 0 0 9 NNE 0 0 1 0 0 0 1 NE 0 0 0 1 0 0 1 ENE 0 0 0 1 0 0 1 E 0 0 0 0 0 0 0 ESE 0 0 2 7 0 0 9 SE 0 0 2 2 0 0 4 SSE 0 0 0 0 0 0 0 s 0 0 1 3 1 0 5 SSW 0 0 1 7 6 0 14 SW 0 0 0 1 4 4 9 WSW 0 0 2 4 2 0 8 w 0 0 7 9 1 0 17 WNW 0 0 4 16 0 1 21 NW 0 0 2 3 1 0 6 NNW 0 0 0 7 0 0 7 Variable 0 0 0 0 0 0 0 Total 0 0 28 64 15 5 112 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:

3 Page 35of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Moderately Unstable

-200Ft-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 11 5 0 0 17 NNE 0 0 6 0 0 0 6 NE 0 0 10 1 0 0 11 ENE 0 0 4 0 0 0 4 E 0 0 2 0 0 0 2 ESE 0 1 8 1 0 0 10 SE 0 2 7 1 0 0 10 SSE 0 0 3 0 0 0 3 s 0 0 5 2 3 0 10 SSW 0 0 4 5 1 0 10 SW 0 2 8 0 3 0 13 WSW 0 1 1 6 1 0 9 w 0 1 8 4 0 0 13 WNW 0 1 8 9 1 0 19 NW 0 0 8 3 2 0 13 NNW 0 1 3 6 1 0 11 Variable 0 0 0 0 0 0 0 Total 0 10 96 43 12 0 161 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 36 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Slightly Unstable

-200Ft-33Ft Delta-T (F) Winds Measured at 33 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 6 9 3 1 0 19 NNE 0 3 5 0 0 0 8 NE 0 7 8 1 0 0 16 ENE 0 3 2 0 0 0 5 E 1 4 1 3 0 0 9 ESE 0 6 9 3 0 0 18 SE 0 3 7 3 0 0 13 SSE 0 5 8 4 0 0 17 s 0 2 8 0 0 0 10 SSW 0 3 4 8 0 0 15 SW 0 7 4 2 0 1 14 WSW 0 2 3 2 0 0 7 w 0 2 9 1 0 0 12 WNW 0 1 9 8 2 0 20 NW 0 2 4 2 3 0 11 NNW 0 3 3 3 0 0 9 Variable 0 0 0 0 0 0 0 Total 1 59 93 43 6 1 203 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 37of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Neutral -200Ft-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 29 28 8 0 0 65 NNE 3 40 22 1 0 0 66 NE 2 13 37 16 1 0 69 ENE 0 14 19 29 18 1 81 E 0 13 8 13 7 0 41 ESE 0 10 11 9 5 0 35 SE 0 11 6 6 6 0 29 SSE 1 8 5 11 3 0 28 s 0 7 15 8 8 0 38 SSW 1 12 22 15 2 0 52 SW 0 6 9 11 2 1 29 WSW 0 4 7 7 2 0 20 w 0 9 10 8 0 1 28 WNW 0 9 26 32 13 3 83 NW 0 8 10 22 5 4 49 NNW 2 4 22 15 6 4 53 Variable 0 0 0 0 0 0 0 Total 9 197 257 211 78 14 766 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 38of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Slightly Stable -200Ft-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 20 7 0 0 0 29 NNE 2 16 3 0 0 0 21 NE 0 5 5 0 0 0 10 ENE 0 10 12 4 0 0 26 E 2 10 27 1 0 0 40 ESE 1 11 12 6 0 0 30 SE 0 14 11 1 1 0 27 SSE 0 5 11 7 4 0 27 s 1 5 18 5 1 0 30 SSW 0 5 35 4 3 0 47 SW 3 3 18 14 0 0 38 WSW 3 3 15 15 2 0 38 w 1 9 20 3 0 0 33 WNW 3 11 18 8 5 0 45 NW 4 14 11 1 0 0 30 NNW 0 5 16 1 0 0 22 Variable 0 0 0 0 0 0 0 Total 22 146 239 70 16 0 493 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 39of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Moderately Stable -200Ft-33Ft Delta-T (F) Winds Measured at 33 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 10 0 0 0 0 10 NNE 1 4 0 0 0 0 5 NE 3 0 0 0 0 0 3 ENE 1 1 2 0 0 0 4 E 1 13 29 0 0 0 43 ESE 0 17 5 0 0 0 22 SE 2 13 6 0 0 0 21 SSE 1 6 2 2 0 0 11 s 1 10 7 3 0 0 21 SSW 2 6 13 3 0 0 24 SW 0 5 6 2 0 0 13 WSW 3 9 12 4 1 0 29 w 1 12 14 3 0 0 30 WNW 1 15 1 0 0 0 17 NW 0 7 1 0 0 0 B NNW 0 4 0 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 17 132 98 17 1 0 265 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 40of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Extremely Stable -200Ft-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 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 8 11 0 0 0 19 ESE 2 20 3 0 0 0 25 SE 0 13 2 0 0 0 15 SSE 0 10 1 0 0 0 11 s 0 10 3 0 0 0 13 SSW 2 8 13 0 0 0 23 SW 1 6 5 0 0 0 12 WSW 1 11 7 0 0 0 19 w 0 22 5 0 0 0 27 WNW 0 15 0 0 0 0 15 NW 0 1 0 0 0 0 1 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 6 125 50 0 0 0 181 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 41of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Extremely Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 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 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:

3 Page 42 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Moderately Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 0 0 0 2 0 2 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 1 1 0 0 2 SSE 0 0 0 0 0 0 0 s 0 0 0 0 1 1 2 SSW 0 0 0 0 2 4 6 SW 0 0 0 0 1 3 4 WSW 0 0 0 0 1 1 2 w 0 0 0 1 1 0 2 WNW 0 0 0 5 3 0 8 NW 0 0 0 1 0 0 1 NNW 0 0 0 2 1 1 4 Variable 0 0 0 0 0 0 0 Total 0 0 1 10 12 10 33 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 43of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Slightly Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed {in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 0 4 10 0 2 16 NNE 0 0 5 2 0 0 7 NE 0 0 0 3 2 0 5 ENE 0 0 0 3 0 0 3 E 0 0 1 0 0 0 1 ESE 0 0 1 7 1 0 9 SE 0 0 1 4 0 0 5 SSE 0 0 0 0 0 0 0 s 0 0 0 3 2 1 6 SSW 0 0 0 6 4 2 12 SW 0 0 1 0 4 2 7 WSW 0 0 2 1 3 1 7 w 0 0 2 7 3 1 13 WNW 0 0 6 13 5 1 25 NW 0 0 1 4 2 1 8 NNW 0 0 2 3 4 0 9 Variable 0 0 0 0 0 0 0 Total 0 0 26 66 30 11 133 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:

3 Page 44of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Neutral -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 14 17 22 17 3 73 NNE 0 17 29 25 2 0 73 NE 1 14 20 63 13 3 114 ENE 0 15 15 37 20 17 104 E 1 14 3 10 14 5 47 ESE 0 7 17 18 6 11 59 SE 1 9 14 17 4 2 47 SSE 0 9 15 13 7 13 57 s 1 5 10 14 7 11 48 SSW 1 7 20 32 12 17 89 SW 0 7 20 15 4 4 50 WSW 1 4 8 15 16 8 52 w 0 4 8 18 3 1 34 WNW 0 5 18 30 20 9 82 NW 0 4 16 22 22 56 120 NNW 0 5 9 14 12 6 46 Variable 0 0 0 0 0 0 0 Total 6 140 239 365 179 166 1095 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 45of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Slightly Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 7 3 6 6 1 23 NNE 1 3 11 13 0 0 28 NE 0 2 11 11 1 0 25 ENE 0 6 11 10 2 0 29 E 1 3 12 8 6 1 31 ESE 0 6 8 11 19 2 46 SE 1 1 8 9 8 1 28 SSE 1 3 2 10 11 2 29 s 0 1 1 10 15 10 37 SSW 1 3 6 17 26 10 63 SW 0 3 6 16 15 9 49 WSW 2 4 1 11 13 9 40 w 2 7 8 16 7 3 43 WNW 0 3 5 19 13 5 45 NW 1 4 14 23 8 5 55 NNW 0 0 3 10 13 0 26 Variable 0 0 0 0 0 0 0 Total 10 56 110 200 163 58 597 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 46of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Moderately Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 3 1 0 0 0 4 NNE 0 1 4 1 1 0 7 NE 0 2 0 0 2 0 4 ENE 0 0 1 0 0 0 1 E 1 0 3 2 3 3 12 ESE 0 0 1 25 15 3 44 SE 0 1 4 18 9 0 32 SSE 0 0 4 8 4 0 16 s 0 2 2 4 4 0 12 SSW 0 1 8 6 3 7 25 SW 1 3 3 13 6 1 27 WSW 0 4 3 4 1 3 15 w 0 5 5 13 5 5 33 WNW 0 3 11 13 3 1 31 NW 0 0 8 5 0 0 13 NNW 0 2 2 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 2 27 60 112 56 23 280 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 47of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2016 Stability Class -Extremely Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 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 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 5 1 1 3 0 10 SSE 0 0 1 3 0 0 4 s 0 0 1 2 0 0 3 SSW 0 0 4 3 0 0 7 SW 0 0 2 3 0 3 8 WSW 0 0 0 0 0 0 0 w 0 0 1 2 0 0 3 WNW 0 0 1 1 4 1 7 NW 0 0 0 0 0 0 0 NNW 0 1 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 6 11 15 7 4 43 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

3 Page 48of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Extremely Unstable

-200Ft-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 0 0 1 0 0 0 1 ESE 0 0 2 0 0 0 2 SE 0 0 0 0 0 0 0 SSE 0 1 0 0 0 0 1 s 0 0 2 0 0 0 2 SSW 0 0 5 1 0 0 6 SW 0 2 10 1 0 0 13 WSW 0 0 4 0 0 0 4 w 0 0 6 5 0 0 11 WNW 0 0 8 4 0 0 12 NW 0 0 0 1 0 0 1 NNW 0 0 0 1 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 3 38 13 0 0 54 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 49of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Moderately Unstable

-200Ft-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 9 0 0 0 9 NNE 0 0 0 0 0 0 0 NE 0 0 3 0 0 0 3 ENE 0 0 7 1 0 0 8 E 0 3 5 0 0 0 8 ESE 0 5 3 1 0 0 9 SE 0 6 2 1 0 0 9 SSE 0 3 2 0 0 0 5 s 0 4 10 2 0 0 16 SSW 1 9 17 3 0 0 30 SW 0 3 11 3 0 0 17 WSW 0 5 13 0 0 0 18 w 0 0 7 3 0 0 10 WNW 0 3 7 2 0 0 12 NW 0 1 2 0 0 0 3 NNW 0 2 6 1 0 0 9 Variable 0 0 0 0 0 0 0 Total 1 44 104 17 0 0 166 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 50of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Slightly Unstable

-200Ft-33Ft Delta-T (F) Winds Measured at 33 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total ---------

N 0 11 6 1 0 0 18 NNE 0 7 3 0 0 0 10 NE 0 3 3 1 0 0 7 ENE 0 4 6 0 0 0 10 E 0 8 5 0 0 0 13 ESE 0 13 5 1 0 0 19 SE 0 10 6 0 0 0 16 SSE 1 7 6 1 0 0 15 s 0 4 4 2 0 0 10 SSW 1 8 13 3 0 0 25 SW 0 4 8 5 0 0 17 WSW 0 10 9 2 0 0 21 w 0 18 11 3 0 0 32 WNW 0 6 4 4 3 0 17 NW 0 2 3 0 0 0 5 NNW 0 4 2 0 0 0 6 Variable 0 0 0 0 0 0 0 Total 2 119 94 23 3 0 241 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 51of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Neutral -200Ft-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 21 14 9 0 0 45 NNE 0 24 34 2 0 0 60 NE 0 16 29 1 0 0 46 ENE 0 9 25 4 0 0 38 E 1 17 27 5 0 0 50 ESE 1 18 19 1 0 0 39 SE 5 19 10 1 0 0 35 SSE 8 18 10 0 0 0 36 s 4 13 22 3 0 0 42 SSW 2 11 21 2 0 0 36 SW 4 11 26 4 0 0 45 WSW 1 14 16 2 0 0 33 w 2 11 26 6 3 0 48 WNW 2 12 17 16 5 0 52 NW 0 10 4 2 0 0 16 NNW 2 12 19 1 0 0 34 Variable 0 0 0 0 0 0 0 Total 33 236 319 59 8 0 655 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 52of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Slightly Stable -200Ft-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 18 3 1 0 0 23 NNE 5 28 1 0 0 0 34 NE 3 7 9 1 0 0 20 ENE 0 7 19 0 0 0 26 E 2 21 16 2 0 0 41 ESE 3 19 4 0 0 0 26 SE 2 15 9 0 0 0 26 SSE 6 11 9 0 0 0 26 s 5 18 27 1 0 0 51 SSW 3 12 35 0 0 0 50 SW 1 15 22 3 0 0 41 WSW 3 15 11 5 0 0 34 w 0 12 11 2 0 0 25 WNW 3 13 12 1 4 0 33 NW 1 14 7 0 0 0 22 NNW 1 16 4 1 0 0 22 Variable 0 0 0 0 0 0 0 Total 39 241 199 17 4 0 500 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 53of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Moderately Stable -200Ft-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 15 0 0 0 0 18 NNE 0 5 0 0 0 0 5 NE 0 0 0 0 0 0 0 ENE 1 2 0 0 0 0 3 E 4 36 2 0 0 0 42 ESE 0 31 1 0 0 0 32 SE 3 12 1 1 0 0 17 SSE 4 19 6 0 0 0 29 s 2 23 7 0 0 0 32 SSW 3 35 7 0 0 0 45 SW 5 23 4 0 0 0 32 WSW 2 22 7 0 0 0 31 w 2 10 11 0 0 0 23 WNW 5 20 4 0 0 0 29 NW 1 1 0 1 0 0 3 NNW 0 7 0 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 35 261 so 2 0 0 348 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 54of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Extremely Stable -200Ft-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 0 3 2 0 0 0 5 ESE 3 27 1 0 0 0 31 SE 1 28 0 0 0 0 29 SSE 1 15 0 0 0 0 16 s 1 48 4 0 0 0 53 SSW 4 29 6 0 0 0 39 SW 2 17 2 0 0 0 21 WSW 1 10 6 0 0 0 17 w 2 16 0 0 0 0 18 WNW 1 13 0 0 0 0 14 NW 1 0 0 0 0 0 1 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 17 206 21 0 0 0 244 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 55of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Extremely Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 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 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:

0 Page 56of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Moderately Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 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 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 2 0 2 WNW 0 0 0 1 1 0 2 NW 0 0 0 0 1 0 1 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 0 0 1 4 0 5 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 57of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Slightly Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------N 0 0 4 0 0 0 4 NNE 0 0 0 0 0 0 0 NE 0 0 1 0 0 0 1 ENE 0 0 0 3 0 0 3 E 0 1 0 0 0 0 1 ESE 0 1 4 0 0 0 5 SE 0 2 1 0 0 0 3 SSE 0 0 1 0 0 0 1 s 0 0 3 7 0 0 10 SSW 0 0 2 8 1 1 12 SW 0 0 6 2 2 0 10 WSW 0 0 1 1 0 0 2 w 0 0 2 3 1 0 6 WNW 0 0 2 4 1 0 7 NW 0 0 0 9 0 0 9 NNW 0 0 2 1 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 4 29 38 5 1 77 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 58 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Neutral -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 1 13 20 11 8 3 56 NNE 0 3 18 28 7 0 56 NE 3 5 24 29 11 0 72 ENE 1 9 14 39 8 0 71 E 1 13 24 23 4 0 65 ESE 0 16 35 12 0 0 63 SE 2 32 22 6 2 0 64 SSE 2 15 15 6 0 0 38 s 2 23 19 23 5 1 73 SSW 3 8 24 33 9 0 77 SW 5 8 22 47 11 0 93 WSW 0 13 18 25 2 0 58 w 1 16 29 37 9 2 94 WNW 2 12 11 14 24 11 74 NW 0 5 14 9 5 3 36 NNW 1 6 27 6 2 0 42 Variable 0 0 0 0 0 0 0 Total 24 197 336 348 107 20 1032 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 59of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Slightly Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total ---------

N 1 2 9 12 7 3 34 NNE 0 5 11 11 4 0 31 NE 0 11 22 5 14 0 52 ENE 1 2 10 9 1 0 23 E 1 6 14 20 6 1 48 ESE 2 3 8 21 0 0 34 SE 1 3 13 10 7 0 34 SSE 1 5 16 8 7 0 37 s 3 5 12 17 22 6 65 SSW 1 7 10 13 19 5 55 SW 1 2 4 29 26 3 65 WSW 1 4 17 28 5 2 57 w 0 3 14 11 3 1 32 WNW 1 1 8 20 12 2 44 NW 0 5 7 13 4 4 33 NNW 0 3 3 6 2 1 15 Variable 0 0 0 0 0 0 0 Total 14 67 178 233 139 28 659 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 60of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Moderately Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 1 4 2 0 0 7 NNE 1 2 10 3 0 0 16 NE 0 1 3 1 0 0 5 ENE 2 4 1 0 0 0 7 E 0 1 5 2 1 0 9 ESE 0 1 6 22 8 0 37 SE 1 1 11 8 6 0 27 SSE 0 1 14 12 2 1 30 s 0 6 4 10 7 1 28 SSW 1 2 4 27 18 1 53 SW 1 1 15 22 10 0 49 WSW 1 12 8 12 3 0 36 w 1 2 6 5 3 6 23 WNW 1 0 8 4 4 1 18 NW 0 5 8 7 3 0 23 NNW 0 5 6 4 0 0 15 Variable 0 0 0 0 0 0 0 Total 9 45 113 141 65 10 383 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 61of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2016 Stability Class -Extremely Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 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 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 0 2 0 0 2 SSE 0 0 6 3 0 2 11 s 0 0 3 3 3 0 9 SSW 0 0 1 8 2 2 13 SW 0 0 2 5 0 0 7 WSW 0 0 1 3 0 0 4 w 0 0 0 3 0 0 3 WNW 0 0 0 1 0 0 1 NW 0 1 0 0 0 0 1 NNW 1 0 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 1 1 13 28 5 4 52 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

0 Page 62of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Extremely Unstable

-200Ft-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 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 1 0 0 1 SSW 0 0 0 1 2 0 3 SW 0 0 0 3 0 0 3 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 2 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 0 0 7 2 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:

2 Page 63 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Moderately Unstable

-200Ft-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 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 3 0 0 3 SSW 0 0 0 5 0 0 5 SW 0 0 2 0 0 0 2 WSW 0 0 0 2 3 0 5 w 0 0 0 0 1 0 1 WNW 0 1 2 1 0 0 4 NW 0 0 1 0 0 0 1 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 1 5 11 4 0 21 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

2 Page 64of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Slightly Unstable

-200Ft-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 2 0 0 0 3 NNE 0 2 1 1 0 0 4 NE 0 0 1 0 0 0 1 ENE 0 2 0 0 0 0 2 E 0 0 0 0 0 0 0 ESE 0 0 0 3 0 0 3 SE 0 0 0 1 0 0 1 SSE 0 0 2 3 0 0 5 s 0 0 1 3 0 0 4 SSW 0 0 7 3 1 0 11 SW 0 0 4 5 0 0 9 WSW 0 0 8 2 2 0 12 w 0 2 3 0 1 0 6 WNW 0 1 4 1 0 0 6 NW 0 2 4 5 1 0 12 NNW 0 1 4 3 1 0 9 Variable 0 0 0 0 0 0 0 Total 0 11 41 30 6 0 88 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

2 Page 65of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Neutral -200Ft-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 30 17 5 0 0 53 NNE 2 9 12 0 0 0 23 NE 3 7 4 0 0 0 14 ENE 3 4 5 1 0 0 13 E 0 7 12 9 2 0 30 ESE 2 7 8 15 2 0 34 SE 0 11 15 31 2 0 59 SSE 1 7 12 18 3 1 42 s 0 11 14 12 13 0 50 SSW 0 11 17 15 4 0 47 SW 0 11 10 8 1 0 30 WSW 2 10 22 24 5 0 63 w 2 17 59 43 2 0 123 WNW 2 20 47 67 12 0 148 NW 2 8 33 16 4 0 63 NNW 0 25 37 18 2 0 82 Variable 0 0 0 0 0 0 0 Total 20 195 324 282 52 1 874 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

2 Page 66of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Slightly Stable -200Ft-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 21 14 0 0 0 35 NNE 1 16 3 0 0 0 20 NE 1 1 12 1 0 0 15 ENE 0 3 7 0 0 0 10 E 1 7 24 3 0 0 35 ESE 0 13 3 6 3 0 25 SE 1 7 4 6 2 0 20 SSE 0 12 13 9 3 0 37 s 0 5 33 22 11 0 71 SSW 4 5 19 39 13 0 80 SW 4 7 12 18 19 1 61 WSW 1 6 12 21 7 0 47 w 4 9 18 24 7 5 67 WNW 4 11 13 26 31 19 104 NW 1 5 15 3 1 0 25 NNW 1 7 14 1 0 0 23 Variable 0 0 0 0 0 0 0 Total 23 135 216 179 97 25 675 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

2 Page 67of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Moderately Stable -200Ft-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 13 0 0 0 0 13 NNE 0 0 0 0 0 0 0 NE 1 0 0 0 0 0 1 ENE 2 0 0 0 0 0 2 E 0 12 6 0 0 0 18 ESE 0 16 0 0 0 0 16 SE 1 5 5 0 0 0 11 SSE 1 5 5 4 0 0 15 s 1 11 20 7 0 0 39 SSW 1 7 19 5 0 0 32 SW 1 8 21 3 0 0 33 WSW 0 7 14 25 0 0 46 w 1 11 11 1 0 0 24 WNW 0 6 6 0 0 2 14 NW 2 6 4 0 0 0 12 NNW 1 7 2 0 0 0 10 Variable 0 0 0 0 0 0 0 Total 12 114 113 45 0 2 286 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

2 Page 68of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Extremely Stable -200Ft-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 3 0 0 0 0 3 NNE 1 0 0 0 0 0 1 NE 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 E 1 9 0 0 0 0 10 ESE 0 17 1 0 0 0 18 SE 0 13 8 0 0 0 21 SSE 1 16 9 0 0 0 26 s 1 10 15 0 0 0 26 SSW 1 18 26 0 0 0 45 SW 0 10 22 3 0 0 35 WSW 1 3 25 8 0 0 37 w 0 10 2 0 0 0 12 WNW 0 9 2 0 0 0 11 NW 1 4 0 0 0 0 5 NNW 1 2 0 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 8 124 110 11 0 0 253 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

2 Page 69of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Extremely Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 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 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:

2 Page 70of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Moderately Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 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 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 1 0 1 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 0 1 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 0 0 0 0 2 0 2 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

2 Page 71of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Slightly Unstable

-375Ft-33Ft Delta-T (F) Winds Measured at 375 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 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 1 0 1 SSW 0 0 0 0 0 3 3 SW 0 0 0 0 2 0 2 WSW 0 0 0 0 0 0 0 w 0 0 0 0 1 0 1 WNW 0 0 0 0 1 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 0 0 0 0 5 3 8 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

2 Page 72of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Neutral -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 0 18 18 17 7 0 60 NNE 2 5 7 16 1 0 31 NE 2 6 15 5 3 0 31 ENE 0 3 6 8 1 0 18 E 1 1 5 11 7 2 27 ESE 0 10 2 9 8 13 42 SE 2 7 5 15 20 7 56 SSE 1 4 8 18 16 6 53 s 0 8 9 15 11 24 67 SSW 0 4 12 17 22 16 71 SW 1 3 15 17 14 4 54 WSW 1 5 10 21 21 17 75 w 0 6 35 32 42 18 133 WNW 0 6 30 36 48 23 143 NW 0 5 34 34 14 16 103 NNW 1 7 18 14 11 0 51 Variable 0 0 0 0 0 0 0 Total 11 98 229 285 246 146 1015 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 85 Hours of missing stability measurements in all stability classes:

2 Page 73of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Slightly Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------N 0 2 3 14 15 5 39 NNE 2 6 3 10 2 0 23 NE 1 4 7 13 2 0 27 ENE 1 0 4 4 2 0 11 E 0 0 2 10 4 0 16 ESE 0 3 4 2 7 2 18 SE 1 2 4 11 3 4 25 SSE 0 3 17 6 8 7 41 s 0 1 7 8 27 28 71 SSW 0 4 8 15 26 63 116 SW 0 5 11 10 22 28 76 WSW 0 3 10 8 16 13 50 w 0 1 6 14 7 21 49 WNW 0 1 4 17 7 55 84 NW 0 2 3 8 6 6 25 NNW 0 0 3 4 3 1 11 Variable 0 0 0 0 0 0 0 Total 5 37 96 154 157 233 682 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 22 Hours of missing stability measurements in all stability classes:

2 Page 74of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Moderately Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 Feet Wind Speed (in mph) Wind Direction 1-3 4-7 8-12 13-18 19-24 > 24 Total ---------

N 1 1 2 4 1 1 10 NNE 1 2 5 2 0 0 10 NE 1 1 2 3 0 0 7 ENE 0 2 1 0 0 0 3 E 0 2 1 0 0 0 3 ESE 0 1 1 18 3 0 23 SE 0 3 1 6 2 0 12 SSE 0 0 7 4 5 6 22 s 1 0 4 7 5 11 28 SSW 0 2 5 13 9 11 40 SW 0 3 8 28 19 8 66 WSW 0 1 4 14 17 16 52 w 0 0 1 12 2 5 20 WNW 0 1 2 10 2 1 16 NW 1 0 4 4 5 0 14 NNW 0 0 2 4 2 0 8 Variable 0 0 0 0 0 0 0 Total 5 19 50 129 72 59 334 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes:

2 Page 75 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2016) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2016 Stability Class -Extremely Stable -375Ft-33Ft Delta-T (F) Winds Measured at 375 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 0 0 0 0 0 0 0 ESE 0 0 1 3 0 0 4 SE 0 0 1 3 0 0 4 SSE 0 0 0 2 2 3 7 s 0 0 0 7 0 0 7 SSW 0 0 0 2 1 1 4 SW 0 0 2 6 3 0 11 WSW 0 0 2 0 5 3 10 w 0 0 0 6 2 1 9 WNW 0 0 1 0 0 0 1 NW 0 0 0 0 0 0 0 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 0 8 29 13 8 58 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:

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