ML16120A259

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LaSalle County, Units 1 and 2 - 2015 Annual Radioactive Effluent Release Report, Including Offsite Dose Calculation Manual, CY-LA-170-301, Revision 6. Part 1 of 9
ML16120A259
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 04/29/2016
From: Trafton W J
Exelon Generation Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML16120A531 List:
References
RA16-017 CY-LA-170-301, Rev. 6
Download: ML16120A259 (93)
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Text

Exelon LaSalle County Station 2601 North 21 51 Road Marseilles, IL 61341 815-415-2000 Telephone www.exeloncorp.com RA16-017 1 O CFR 50.36a April 29, 2016 U.S. Nuclear Regulatory Commission Attention:

Document Control Desk Washington, D.C. 20555

Subject:

LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374 2015 Annual Radioactive Effluent Release Report Enclosed is the Exelon Generation Company, LLC, 2015 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." Should you have any questions concerning this letter, please contact Mr. Guy V. Ford, Regulatory Assurance Manager, at (815) 415-2800.

Respectfully, William . Traft n Site Vice Presi ent LaSalle County Station

Enclosure:

LaSalle County Station 2015 Annual Radiological Effluent Release Report cc: Regional Administrator

-NRC Region Ill NRC Senior Resident Inspector

-LaSalle County Station LASALLE COUNTY NUCLEAR POWER STATION ANNUAL RADIOLOGICAL EFFLUENT RELEASE REPORT (ARERR) 2015 Page 1 of 76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SUPPLEMENT AL INFORMATION I. Regulatory Limits a. Gaseous Effluents I) 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 I 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

1) 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 1.5 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 I 0 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
1) 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 2of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SUPPLEMENT AL INFORMATION

b. Liquid Effluents l) The concentration of radioactive material released from the site shall be limited to ten (10) times the concentrations specified in 10 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 l) Not applicable

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

a. Gaseous Effluents l) 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. l) 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 17. l 0 Ci/Unit/year of C-14 (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 348.5 days (per Unit). b. Liquid Effluents

1) Batch waste release tanks are sampled each batch for principal gamma emitters, 1-131, dissolved and entrained noble gases, H-3, gross alpha, Sr-89, Sr-90 and Fe-55. Page 3of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SUPPLEMENTAL 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, I-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 1) 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. NIA 5) Minimum time period for a batch release: Min. NI A 6) Average stream flow during periods of release of effluent into a flowing stream: gpm NI A 6. Abnormal Releases a. Gaseous I) Number of releases:

None 2) Total activity released:

NIA b. Liquid I) Number of releases:

None 2) Total activity released:

NIA 7. Process Control Program Revision 11 of the Process Control Procedure (RW-AA-100) was implemented on June 17, 2015. The revision incorporated the following changes:

  • In the Terms and Definitions section, the definitions were arranged in alphabetical order, and the definitions for Blending and Concentration Averaging were revised. Page 4of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SUPPLEMENT AL INFORMATION
  • In the Terms and Definitions section, the terms for Classification Controlling Nuclides, Homogenous Waste, Mixable Waste, and Nuclides of Concern were added.
  • The order of the references section was updated.
  • Reference documents were added including:

the applicable sections of the Updated Final Safety Analysis Reports (UFSAR) from various nuclear sites across the Exelon Fleet; the NRC Concentration Averaging and Encapsulation Branch Technical Position, NRC-2011-0022; and Exelon Procedure RM-AA-I 0 I, Records Management Program. There were no changes to the Process Control Program 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. 8. Effluent Monitoring Instrumentation time clocks and sample anomalies.

a. Time clocks: There were no effluent monitoring time clocks exceeded in 2015. b. Sample anomalies:

There were no sampling anomalies affecting the measurement of effluents experienced during 2015. 9. Offsite Dose Calculation Manual (ODCM) Revisions.

There was one revision made to the ODCM in 2015. Revision 6 implemented various editorial and grammatical changes including the addition of the definition for "POSITION INDICATION VERIFICATION" related to the Blowdown Flow Control Valve position indication and the re-insertion of historical Table 4-6. Due to typographical error, the cover page of ODCM Revision 6 incorrectly indicates that Revision 6 was implemented on November 26, 2014. The implementation date for Revision 6 was January 6, 2015. Each change had a determination performed, in accordance with ODCM revision procedures, to ensure the change would 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.

The determinations indicated no adverse impacts. A copy of the ODCM Change Summary Matrix for revision 6 has been included as Appendix A to this report. Also, a copy of revision 6 to the ODCM has been included as Appendix B to this report. All changes in revision 6 to the LaSalle Station ODCM became effective January 6, 2015. I 0. Independent Spent Fuel Storage Installation (ISFSI). During the period April I, 2015 through April I, 2016, no radioactive effluents were released from the LaSalle Nuclear Station Independent Spent Fuel Storage Installation.

Also during this period, 8 casks were transfe1Ted to the outdoor concrete ISFSI storage pad. Page 5 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) UNIT l 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 2.78E+02 5.72E+02 1.42E+03 2. Average release rate for the period µCi/sec 3.58E+01 7.28E+01 1.79E+02 3. Percent of ODCM limit % * *

  • B. Iodine 1. Total Iodine -131 Ci 2.74E-02 7.30E-03 1.15E-02 2. Average release rate for the period µCi/sec 3.52E-03 9.28E-04 1.44E-03 3. Percent of ODCM limit % * * . C. Particulates
1. Particulates with half-lives

> 8 days Ci 4.27E-03 5.50E-03 5.47E-03 2. Average release rate for the period µCi/sec 5.49E-04 6.99E-04 6.88E-04 3. Percent of ODCM limit % * * . D. Tritium 1. Total Release Ci 5.45E+OO 5.05E+OO 7.11 E+OO 2. Average release rate for the period µCi/sec 7.01 E-01 6.43E-01 8.95E-01 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 8.55E+OO 8.55E+OO 8.55E+OO 2. Average release rate for the period µCi/sec 1.10E+OO 1.09E+OO 1.07E+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% 7.16E+02 2.50E+01 9.01 E+01 . 5.45E-03 1.50E+01 I 6.86E-04
  • 2.26E-03 3.50E+01 I 2.84E-04
  • 5.95E+OO 1.50E+01 I 7.49E-01 * <LLD N/A I <LLD
  • 8.55E+OO 1.07E+OO
  • Nuclides Released A. Fission gases Kr-85m Kr-87 Kr-88 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 Zr-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 Alpha Gross Alpha Total for Period F. Carbon-14 C-14 Total for Period LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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 9.40E+01 1.52E+02 1.74E+02 2.10E+02 NIA NIA NIA Ci <LLD 3.31E+01 <LLD 7.75E+OO NIA NIA NIA Ci 1.00E+02 2.20E+02 2.25E+02 2.73E+02 NIA NIA NIA Ci <LLD <LLD 1.19E+01 <LLD NIA NIA NIA Ci 7.09E+01 1.62E+02 8.64E+02 2.22E+02 NIA NIA NIA Ci 7.33E+OO 4.76E+OO 1.13E+02 2.69E-04 NIA NIA NIA Ci 6.04E+OO <LLD 6.12E+OO 3.25E+OO NIA NIA NIA Ci <LLD <LLD 3.04E+01 <LLD NIA NIA NIA Ci 6.88E-03 6.38E-03 5.69E-03 <LLD NIA NIA NIA Ci 2.78E+02 5.72E+02 1.42E+03 7.16E+02 NIA NIA NIA Ci 2.74E-02 7.30E-03 1.15E-02 5.45E-03 NIA NIA NIA Ci 3.22E-02 1.25E-02 1.22E-02 7.35E-03 NIA NIA NIA Ci 4.86E-02 2.06E-02 2.90E-02 1.60E-02 NIA NIA NIA Ci 1.15E-02 3.03E-03 <LLD <LLD NIA NIA NIA Ci 5.00E-02 2.61E-02 2.87E-02 1.29E-02 NIA NIA NIA Ci 1.70E-01 6.94E-02 8.13E-02 4.17E-02 NIA NIA NIA Ci 1.26E-01 5.39E-02 6.92E-02 3.44E-02 NIA NIA NIA Ci 6.67E-06 <LLD 5.19E-05 <LLD NIA NIA NIA Ci <LLD <LLD

<LLD <LLD NIA NIA NIA Ci 3.52E-04 3.06E-04 2.98E-04 3.09E-05 NIA NIA NIA Ci <LLD <LLD <LLD

<LLD NIA NIA NIA Ci 7.14E-04 9.24E-04 9.46E-04 2.62E-04 NIA NIA NIA Ci 2.45E-04 3.06E-04 2.93E-04 2.45E-05 NIA NIA NIA Ci 1.98E-04 3.00E-04 2.42E-04 1.96E-04 NIA NIA NIA Ci <LLD <LLD

<LLD <LLD NIA NIA NIA Ci 1.10E-5 <LLD <LLD <LLD NIA NIA NIA Ci 3.02E-04 4.82E-04 5.51E-04 1.63E-04 NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci 9.03E-04 1.09E-03 1.13E-03 4.03E-04 NIA NIA NIA Ci 1.54E-03 2.09E-03 1.96E-03 1.18E-03 NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci 4.27E-03 5.50E-03 5.47E-03 2.26E-03 NIA NIA NIA Ci 5.45E+OO 5.05E+OO 7.11E+OO 5.95E+OO NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci 8.55E+OO 8.55E+OO 8.55E+OO 8.55E+OO NIA NIA NIA Page 7of76 Quarter 4 NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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 O.OOE+OO O.OOE+OO O.OOE+OO 0.00E+OO F. Volume of Dilution Water Used During Period Liters O.OOE+OO O.OOE+OO O.OOE+OO 0.00E+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 8 of76 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 (2015) LIQUID RELEASES UNIT I AND UNIT 2 Continuous Mode Batch Mode Quarter 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 9 of76 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 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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, 5.01E+OO 9.01 E-01 1015 etc. b. Drv compressible waste, contaminated equip, etc. 9.19E+02 1.33E+OO 1015 c. Irradiated components, control rods, etc. None None 1015 d. Other (Oil, EHC fluid, sump waste, etc.) 1.42E+01 2.02E-03 1015 2. Estimate of major nuclide composition (by waste type) Percent Abundance Major Nuclide Composition (2::1%) a. Spent resins, filter sludges, evaporator bottoms, etc. Mn-54 3.91% Fe-55 12.47% Co-58 1.54% Co-60 72.24% Zn-65 1.48% Cs-137 4.23% b. Dry compressible waste, contaminated equip, etc. H-3 2.98% Mn-54 1.15% Fe-55 22.32% Co-60 70.61% Zn-65 1.13% c. Irradiated components, control rods, etc. None N/A d. Other (Oil, EHC fluid, sump waste etc.) H-3 1.58% Fe-55 14.61% Co-60 78.21% Zn-65 2.18% Page 10of76 Est. Total Error(%) +/-25% +/-25% N/A +/-25% Shipment Type(s) LSA LSA N/A LSA LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS FIRST QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 14 Hittman Transport Energy Solutions

-Bear Creek Facility, Oak Ridae, TN 1 Hittman Transport Energy Solutions, Clive Facility, Tooele County, UT 2 Interstate Ventures Energy Solutions

-Bear Creek Facilitv, 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 11of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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 Tvpes of Waste (m3) Activity (Ci) Period a. Spent resins, filter sludges, evaporator bottoms, 2.51 E+01 5.11 E+OO 2015 etc. b. Drv compressible waste, contaminated equip, etc. 1.51 E+02 3.74E+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

a. Spent resins, filter sludges, evaporator bottoms, etc. Mn-54 2.80% Fe-55 14.50% Co-60 67.72% Zn-65 1.20% Cs-137 9.44% b. Dry compressible waste, contaminated equip, etc. Fe-55 16.86% Co-60 78.40% Zn-65 1.56% c. Irradiated components, control rods, etc. None None d. Other (Oil, EHC fluid, sump waste etc.) None None 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 (2015) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS SECOND QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 1 Cast Transportation Energy Solutions

-Bear Creek Facility, Oak Ridge, TN 5 Hittman Transport Energy Solutions

-Bear Creek Facility, Oak RidQe, TN 4 Hittman Transport Energy Solutions, Clive Facility, Tooele County, UT 1 Interstate Ventures Energy Solutions, Clive Facility, Tooele County, UT 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 Revision 11 of the Process Control Procedure (RW-AA-100) was implemented on June 17, 2015. The revision incorporated the following changes:

  • In the Terms and Definitions section, the definitions were arranged in alphabetical order, and the definitions for Blending and Concentration Averaging were revised.
  • In the Terms and Definitions section, the terms for Classification Controlling Nuclides, Homogenous Waste, Mixable Waste, and Nuclides of Concern were added.
  • The order of the references section was updated.
  • Reference documents were added including:

the applicable sections of the Updated Final Safety Analysis Reports (UFSAR) from various nuclear sites across the Exelon Fleet; the NRC Concentration Averaging and Encapsulation Branch Technical Position, NRC-2011-0022; and Exelon Procedure RM-AA-101, Records Management Program. There were no changes to the Process Control Program processing systems or components 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 ST ATJON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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 (m3) Activity (Ci) Period a. Spent resins, filter sludges, evaporator bottoms, 2.79E+01 2.30E+01 3015 etc. b. Dry compressible waste, contaminated equip, etc. 6.95E+01 1.01 E+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. Mn-54 2.09% Fe-55 18.64% Co-60 63.47% Ni-63 1.04% Cs-137 11.14% b. Dry compressible waste, contaminated equip, etc. Mn-54 1.14% Fe-55 22.71% Co-60 71.82% Zn-65 1.73% c. Irradiated components, control rods, etc. None None d. Other (Oil, EHC fluid, sump waste, etc.) None None 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 (2015) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS THIRD QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 4 Hittman Transport Energy Solutions

-Bear Creek Facility, Oak RidQe, TN 6 Hittman Transport Energy Solutions, Clive Facility, Tooele Countv, UT 8. 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 (2015) 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, 2.72E+01 2.38E+01 4015 etc. b. Drv compressible waste, contaminated equip, etc. 1.33E+02 1.29E+01 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 Maior Nuclide Composition

a. Spent resins, filter sludges, evaporator bottoms, etc. C-14 8.85% Mn-54 1.67% Fe-55 15.24% Co-60 68.10% Ni-63 1.06% Cs-137 3.08% 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 None d. Other (Oil, EHC fluid, sump waste, etc.) None None Page 16of76 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 (2015) 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 RidQe, TN 7 Hittman Transport Energy Solutions, Clive Facility, Tooele County, UT 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 STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) RADIOLOGICAL IMPACT ON MAN MAXIMUM DOSES RES UL TING FROM GASEOUS RELEASES AND COMPLIANCE ST ATVS Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of Infant Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 3.SlE-03 0.07 7.90E-03 0.16 8.89E-03 0.18 9.41E-03 0.19 1.00E+01 0.30 Beta Air 1.00E+01 mRad 1.54E-04 0.002 3.94E-04 0.004 6.31E-04 0.006 4.lOE-04 0.004 2.00E+01 0.01 NG Total Body 2.50E+OO mRem 2.34E-03 0.09 5.27E-03 0.21 5.93E-03 0.24 6.28E-03 0.25 5.00E+OO 0.40 NG Skin 7.50E+OO mRem 3.94E-03 0.05 8.91E-03 0.12 1.00E-02 0.13 1.0GE-02 0.14 1.50E+01 0.22 NNG Organ 7.50E+OO mRem 1.33E-01 1.77 3.69E-02 0.49 5.69E-02 0.76 2.79E-02 0.37 1.50E+01 1.70 Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of Child Receptor Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 3.SlE-03 0.07 7.90E-03 0.16 8.89E-03 0.18 9.41E-03 0.19 1.00E+01 0.30 Beta Air 1.00E+01 mRad 1.54E-04 0.002 3.94E-04 0.004 6.31E-04 0.006 4.lOE-04 0.004 2.00E+01 0.01 NG Total Body 2.50E+OO mRem 2.34E-03 0.09 5.27E-03 0.21 5.93E-03 0.24 6.28E-03 0.25 5.00E+OO 0.40 NG Skin 7.50E+OO mRem 3.94E-03 0.05 8.91E-03 0.12 1.00E-02 0.13 1.06E-02 0.14 1.50E+01 0.22 NNG Organ 7.50E+OO mRem 5.49E-02 0.73 1.54E-02 0.21 2.37E-02 0.31 1.16E-02 0.15 1.50E+01 0.70 Teenager Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 3.SlE-03 0.07 7.90E-03 0.16 8.89E-03 0.18 9.41E-03 0.19 1.00E+01 0.30 Beta Air 1.00E+01 mRad 1.54E-04 0.002 3.94E-04 0.004 6.31E-04 0.006 4.lOE-04 0.004 2.00E+01 0.01 NG Total Body 2.50E+OO mRem 2.34E-03 0.09 5.27E-03 0.21 S.93E-03 0.24 6.28E-03 0.25 5.00E+OO 0.40 NG Skin 7.50E+OO mRem 3.94E-03 0.05 8.91E-03 0.12 1.00E-02 0.13 1.0GE-02 0.14 1.50E+01 0.22 NNG Organ 7.50E+OO mRem 2.78E-02 0.37 7.75E-03 0.10 1.19E-02 0.16 5.83E-03 0.08 1.50E+01 0.36 Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of Adult Receptor Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 3.SlE-03 0.07 7.90E-03 0.16 8.89E-03 0.18 9.41E-03 0.19 1.00E+01 0.30 Beta Air 1.00E+01 mRad 1.54E-04 0.002 3.94E-04 0.004 6.31E-04 0.006 4.lOE-04 0.004 2.00E+01 0.01 NG Total Body 2.50E+OO mRem 2.34E-03 0.09 5.27E-03 0.21 S.93E-03 0.24 6.28E-03 0.25 5.00E+OO 0.40 NG Skin 7.50E+OO mRem 3.94E-03 0.05 8.91E-03 0.12 1.00E-02 0.13 1.06E-02 0.14 1.50E+01 0.22 NNG Organ 7.50E+OO mRem 1.76E-02 0.23 4.91E-03 0.07 7.56E-03 0.10 3.67E-03 0.05 1.50E+01 0.22 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 specific assumptions of source term. Page 18of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) RADIOLOGICAL IMPACT ON MAN MAXIMUM DOSES RESULTING FROM LIQUID RELEASES AND COMPLIANCE STATUS Infant Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of 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 Child Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of 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 %of 2nd %of 3 rd %of 4th %of Annual %of 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 %of 2nd %of 3 rd %of 4th %of Annual %of 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 Page 19 of 76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) RADIOLOGICAL IMPACT ON MAN MAXIMUM DOSES RESULTING FROM RELEASES AND COMPLIANCE STATUS 1 OCFR20 / 40CFR190 Compliance 1 st 2 n d 3 rd 4t h % Quarter Quarter Quarter Quarter Annual Annual Annual Unit 1 U1 DEX U1 DTot Bone Liver Thyroid Kidney Lung Gl-LLI Unit2 Dose Dose (mRem) (mRem) I 9.92E-02 I 1.02E-01 I 2.32E-01 I 1.39E-01 7.33E-03 7.10E-03 1.97E-03 1.70E-03 1.33E-01 3.69E-02 2.03E-03 1.71 E-03 1.55E-03 1.57E-03 1.58E-03 1.59E-03 Dose Dose (mRem) (mRem) 1.02E-01 1.05E-01 1.59E-01 I 1.33E-01 7.16E-03 7.00E-03 1.77E-03 1.58E-03 5.70E-02 2.79E-02 1.78E-03 1.60E-03 1.57E-03 1.50E-03 1.60E-03 1.51 E-03 U2 DEX I 5.29E-02 I 9.46E-02 I 8.66E-02 I 9.89E-02 I U2 DTot I 5.29E-02 I 9.46E-02 I 8.66E-02 I 9.89E-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 Dose (mRem) I 4.09E-01 I 6.63E-01 2.86E-02 7.03E-03 2.55E-01 7.12E-03 6.19E-03 6.28E-03 I 3.33E-01 I 3.33E-01 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Limit (mRem/yr) 40CFR190 Compliance 25 1 OCFR20 Compliance 100 40CFR190 Compliance 25 25 75 25 25 25 40CFR190 Compliance 25 1 OCFR20 Compliance 100 40CFR190 Compliance 25 25 75 25 25 25 Limit 1.63 0.66 0.11 0.03 0.34 0.03 0.02 0.03 1.33 0.33 0.00 0.00 0.00 0.00 0.00 0.00 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 26 5 12 0 0 43 NNE 1 4 3 10 2 0 20 NE 0 1 2 6 0 0 9 ENE 0 1 3 5 0 0 9 E 2 6 4 1 0 0 13 ESE 1 7 8 0 0 0 16 SE 2 1 0 1 0 0 4 SSE 0 4 1 0 2 0 7 s 0 4 3 1 0 0 8 SSW 0 1 1 0 0 0 2 SW 0 2 5 1 1 0 9 WSW 1 4 1 3 1 0 10 w 0 0 4 5 0 0 9 WNW 1 3 9 6 0 0 19 NW 0 5 1 2 0 0 8 NNW 1 9 6 1 3 0 20 Variable 0 0 0 0 0 0 0 Total 9 78 56 54 9 0 206 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 21 of 76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: January -March 2015 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 2 5 0 0 8 NNE 0 0 2 0 0 0 2 NE 0 0 0 3 0 0 3 ENE 0 0 0 1 0 0 1 E 0 1 0 1 1 0 3 ESE 1 0 0 0 1 0 2 SE 0 0 0 2 0 0 2 SSE 0 0 0 0 0 0 0 s 0 1 1 0 0 0 2 SSW 1 1 0 0 0 0 2 SW 0 0 0 0 0 0 0 WSW 0 0 2 3 0 0 5 w 2 0 1 0 0 0 3 WNW 0 1 0 0 2 0 3 NW 0 0 1 2 0 0 3 NNW 0 0 2 1 1 0 4 Variable 0 0 0 0 0 0 0 Total 4 5 11 1 8 5 0 4 3 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 22of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 2 7 4 0 0 13 NNE 0 2 7 3 0 0 12 NE 0 0 3 0 0 0 3 ENE 0 0 1 6 0 0 7 E 0 0 0 3 1 0 4 ESE 0 0 1 5 1 0 7 SE 0 1 0 2 0 0 3 SSE 0 0 2 0 0 0 2 s 0 1 0 0 0 0 1 SSW 0 0 3 0 0 0 3 SW 0 2 1 2 0 0 5 WSW 1 2 0 1 3 0 7 w 0 3 5 4 0 0 12 WNW 0 1 2 1 0 0 4 NW 0 0 3 5 1 0 9 NNW 0 0 3 5 2 0 10 Variable 0 0 0 0 0 0 0 Total 1 14 3 8 41 8 0 102 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 23of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 12 34 16 0 0 63 NNE 0 4 8 3 0 0 15 NE 0 1 3 1 0 0 5 ENE 0 5 7 19 2 0 33 E 1 9 14 15 4 0 43 ESE 2 10 18 6 2 0 38 SE 1 18 3 5 4 0 31 SSE 2 7 4 6 0 0 19 s 2 12 6 4 5 0 29 SSW 2 12 13 9 4 0 40 SW 4 11 20 19 4 0 58 WSW 2 15 25 10 3 1 56 w 0 12 17 17 4 0 50 WNW 2 14 29 39 15 0 99 NW 0 5 12 36 3 1 57 NNW 0 5 26 35 10 5 81 Variable 0 1 0 0 0 0 1 Total 19 153 239 240 60 7 718 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 24of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 10 14 2 0 0 28 NNE 3 8 0 1 0 0 12 NE 0 1 1 1 0 0 3 ENE 2 4 9 3 0 0 18 E 1 6 14 2 0 0 23 ESE 1 16 14 0 0 0 31 SE 3 16 5 1 0 0 25 SSE 3 9 3 1 11 0 27 s 1 8 11 12 5 0 37 SSW 1 9 19 8 1 0 38 SW 0 7 32 33 4 2 78 WSW 0 7 15 38 2 1 63 w 1 5 20 13 1 1 41 WNW 2 11 13 28 21 3 78 NW 3 7 35 4 0 0 49 NNW 0 10 29 21 3 2 65 Variable 0 0 0 0 0 0 0 Total 23 134 234 168 48 9 616 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: 4 Page 25of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: January -March 2015 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 1 0 0 0 0 1 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 1 1 0 0 0 0 2 E 1 3 5 0 0 0 9 ESE 0 13 5 0 0 0 18 SE 1 11 3 0 0 0 15 SSE 6 11 6 1 0 0 24 s 2 7 4 5 0 0 18 SSW 3 14 17 11 0 0 45 SW 3 7 8 12 0 0 30 WSW 1 7 16 16 0 0 40 w 2 14 30 8 0 0 54 WNW 0 5 11 4 7 0 27 NW 2 3 4 0 0 0 9 NNW 1 3 1 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 23 100 110 57 7 0 297 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 26of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 6 5 0 0 0 11 ESE 0 8 1 0 0 0 9 SE 0 8 2 0 0 0 10 SSE 1 3 3 0 0 0 7 s 0 9 13 0 0 0 22 SSW 0 8 21 5 0 0 34 SW 1 5 4 8 0 0 18 WSW 1 6 2 13 0 0 22 w 0 6 8 0 0 0 14 WNW 0 12 13 0 0 0 25 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 4 71 72 26 0 0 173 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 27of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 3 0 2 0 0 5 NNE 0 1 0 4 0 4 9 NE 0 0 0 1 1 0 2 ENE 0 0 0 1 1 0 2 E 0 0 0 1 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 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 0 9 2 4 19 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 28 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 2 4 6 0 12 NNE 0 1 1 0 2 3 7 NE 0 0 0 0 0 3 3 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 2 2 0 4 SE 0 0 0 2 0 0 2 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 1 0 0 1 WSW 0 0 0 0 2 0 2 w 0 0 0 2 2 0 4 WNW 0 0 0 0 1 1 2 NW 0 0 1 0 3 0 4 NNW 0 0 1 1 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 1 5 12 18 7 43 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 4 Hours of missing stability measurements in all stability classes: 4 Page 29of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 1 1 2 4 2 10 NNE 0 2 1 0 0 1 4 NE 0 0 0 0 1 0 1 ENE 0 0 0 1 3 2 6 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 2 0 0 0 2 SSE 0 0 0 0 0 1 1 s 0 0 3 0 0 0 3 SSW 0 0 0 1 0 0 1 SW 0 0 0 1 0 0 1 WSW 0 1 1 0 0 0 2 w 0 0 1 1 0 0 2 WNW 0 0 1 2 1 1 5 NW 0 0 3 1 2 2 8 NNW 0 0 2 1 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 4 15 10 11 9 49 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes: 4 Page 30 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 7 19 46 22 2 96 NNE 0 7 19 13 9 2 50 NE 0 6 7 8 2 0 23 ENE 0 5 13 8 28 2 56 E 1 3 15 8 14 7 48 ESE 0 6 12 13 8 3 42 SE 1 10 8 11 4 5 39 SSE 1 7 10 1 11 8 38 s 2 12 10 7 12 10 53 SSW 1 10 12 9 11 7 50 SW 0 5 15 28 12 5 65 WSW 1 13 18 24 17 8 81 w 0 13 11 12 16 12 64 WNW 1 8 17 18 25 41 110 NW 0 7 9 38 56 32 142 NNW 0 2 13 35 20 20 90 Variable 0 1 0 0 0 0 1 Total 8 122 208 279 267 164 1048 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 33 Hours of missing stability measurements in all stability classes: 4 Page 31of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: January -March 2015 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 3 1 2 11 9 2 28 NNE 2 5 7 4 4 0 22 NE 0 5 7 4 0 0 16 ENE 1 2 8 2 2 0 15 E 0 4 4 6 6 0 20 ESE 1 3 11 4 2 0 21 SE 1 6 9 12 5 0 33 SSE 0 1 7 2 2 0 12 s 0 3 7 9 4 8 31 SSW 1 5 10 16 6 8 46 SW 1 7 8 22 37 28 103 WSW 0 0 5 10 22 24 61 w 1 4 5 12 29 15 66 WNW 4 3 9 8 15 28 67 NW 1 5 8 12 16 4 46 NNW 0 0 5 15 17 2 39 Variable 0 0 0 0 0 0 0 Total 16 54 112 149 176 119 626 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 4 Page 32of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 2 2 0 0 5 NNE 1 1 0 0 0 0 2 NE 0 1 0 1 0 0 2 ENE 2 2 0 1 1 0 6 E 2 1 0 3 0 0 6 ESE 0 4 1 2 2 2 11 SE 2 4 3 8 8 0 25 SSE 0 1 1 6 2 3 13 s 1 0 2 4 4 4 15 SSW 1 1 4 4 8 18 36 SW 0 1 9 11 11 14 46 WSW 0 3 3 4 4 13 27 w 0 1 1 2 2 12 18 WNW 0 0 1 9 24 2 36 NW 0 2 7 8 6 0 23 NNW 0 1 0 7 5 0 13 Variable 0 0 0 0 0 0 0 Total 9 24 34 72 77 68 284 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: 4 Page 33of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 2 0 5 1 0 8 NNE 0 1 3 0 0 0 4 NE 0 1 0 0 0 0 1 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 1 4 0 5 SE 0 0 0 3 1 0 4 SSE 0 0 1 4 1 0 6 s 0 0 0 1 0 0 1 SSW 0 0 0 2 0 0 2 SW 0 1 0 0 1 1 3 WSW 0 2 0 0 4 1 7 w 0 0 0 0 0 2 2 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 1 7 4 1 6 12 4 44 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 34of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 10 0 0 0 10 NNE 0 2 4 0 0 0 6 NE 0 0 11 6 0 0 17 ENE 0 0 2 6 0 0 8 E 0 0 0 0 3 0 3 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 1 0 1 SSE 0 0 0 0 0 2 2 s 0 0 7 10 4 2 23 SSW 0 0 6 14 1 0 21 SW 0 0 4 8 3 0 15 WSW 0 0 1 4 4 1 10 w 0 0 3 10 1 0 14 WNW 0 0 0 11 0 0 11 NW 0 1 0 3 0 0 4 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 3 48 72 17 5 145 Hours 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: 7 Page 35of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 4 0 0 0 5 NNE 0 3 8 1 0 0 12 NE 0 3 3 1 0 0 7 ENE 0 0 15 7 0 0 22 E 0 0 2 1 3 0 6 ESE 0 0 0 0 0 0 0 SE 0 0 2 4 2 0 8 SSE 0 0 3 0 0 0 3 s 0 1 6 2 0 0 9 SSW 0 0 6 2 2 0 10 SW 0 3 9 4 0 0 16 WSW 0 0 10 4 1 0 15 w 0 3 5 4 2 0 14 WNW 0 3 3 6 1 0 13 NW 0 1 4 7 0 0 12 NNW 0 1 3 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 19 83 43 11 0 156 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 7 Page 36 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 5 5 0 0 0 10 NNE 0 0 9 1 0 0 10 NE 0 5 13 5 0 0 23 ENE 0 5 8 6 1 1 21 E 0 4 1 2 1 0 8 ESE 0 3 1 3 1 0 8 SE 0 1 1 3 2 0 7 SSE 0 3 6 1 0 0 10 s 0 0 5 3 1 0 9 SSW 0 2 5 3 0 0 10 SW 0 10 8 7 2 0 27 WSW 0 9 8 10 2 3 32 w 0 3 8 4 0 1 16 WNW 0 2 8 3 1 1 15 NW 0 2 6 8 0 0 16 NNW 0 5 3 3 0 0 11 Variable 0 0 0 0 0 0 0 Total 0 59 95 62 11 6 233 Hours 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: 7 Page 37 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 25 9 0 0 0 36 NNE 1 22 33 8 0 0 64 NE 0 11 70 18 0 0 99 ENE 0 13 53 25 8 0 99 E 1 7 25 9 0 0 42 ESE 0 3 17 4 1 0 25 SE 0 5 10 3 1 0 19 SSE 2 5 9 13 2 0 31 s 1 8 15 7 2 0 33 SSW 2 4 14 13 3 0 36 SW 1 8 22 13 3 0 47 WSW 3 19 22 13 1 3 61 w 1 9 13 11 8 4 46 WNW 1 5 21 8 8 2 45 NW 4 2 15 9 3 0 33 NNW 1 10 14 14 2 0 41 Variable 1 1 0 0 0 0 2 Total 21 157 362 168 42 9 759 Hours 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: 7 Page 38of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 4 21 5 0 0 0 30 NNE 0 14 2 0 0 0 16 NE 5 3 6 0 0 0 14 ENE 0 4 13 9 0 0 26 E 0 19 48 8 1 0 76 ESE 0 3 12 0 0 0 15 SE 2 5 10 3 0 0 20 SSE 1 8 10 7 0 0 26 s 2 8 23 11 5 0 49 SSW 2 11 22 10 0 0 45 SW 0 13 23 22 1 0 59 WSW 2 7 14 7 0 0 30 w 0 8 6 6 12 15 47 WNW 0 8 3 6 5 5 27 NW 2 10 9 1 0 0 22 NNW 2 6 6 2 0 0 16 Variable 0 0 1 0 0 0 1 Total 22 148 213 92 24 20 519 Hours 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: 7 Page 39of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 0 0 0 0 0 0 0 NE 0 1 0 0 0 0 1 ENE 0 1 0 0 0 0 1 E 0 2 9 1 0 0 12 ESE 2 9 1 0 0 0 12 SE 1 9 6 0 0 0 16 SSE 0 8 4 6 0 0 18 s 0 13 5 8 0 0 26 SSW 0 8 14 0 0 0 22 SW 0 7 9 11 0 0 27 WSW 0 5 12 3 0 0 20 w 0 13 5 0 0 0 18 WNW 2 7 0 0 0 0 9 NW 6 6 0 0 0 0 12 NNW 0 9 2 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 11 108 67 29 0 0 215 Hours 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: 7 Page 40of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 0 0 0 0 0 0 ESE 0 3 1 0 0 0 4 SE 0 7 3 0 0 0 10 SSE 0 14 3 0 0 0 17 s 1 12 18 1 0 0 32 SSW 0 9 9 5 0 0 23 SW 0 9 6 0 0 0 15 WSW 0 11 12 0 0 0 23 w 0 10 5 0 0 0 15 WNW 0 1 1 0 0 0 2 NW 0 6 2 0 0 0 8 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 1 83 6 0 6 0 0 150 Hours 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: 7 Page 41of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 1 1 1 3 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 1 1 1 3 Hours 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: 7 Page 42of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 5 0 0 5 NNE 0 0 1 2 0 0 3 NE 0 0 0 4 0 0 4 ENE 0 0 0 1 1 0 2 E 0 0 0 0 0 1 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 3 3 1 7 SSW 0 0 0 1 5 1 7 SW 0 0 0 0 4 1 5 WSW 0 0 0 0 2 3 5 w 0 0 0 1 2 1 4 WNW 0 0 0 1 5 0 6 NW 0 0 0 4 1 0 5 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 0 1 22 23 8 5 4 Hours 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: 7 Page 43of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 1 6 0 0 7 NNE 0 0 2 6 2 0 10 NE 0 1 3 6 3 0 13 ENE 0 0 10 3 4 0 17 E 0 0 1 0 0 1 2 ESE 0 0 0 0 0 0 0 SE 0 0 0 2 4 0 6 SSE 0 0 0 0 0 1 1 s 0 0 4 5 2 4 15 SSW 0 0 6 5 2 3 16 SW 0 0 3 3 5 2 13 WSW 0 0 0 4 2 0 6 w 0 0 0 5 3 1 9 WNW 0 0 0 2 4 2 B NW 0 2 0 1 7 1 11 NNW 0 1 1 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 4 31 48 38 15 136 Hours 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: 7 Page 44of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 7 13 13 1 0 36 NNE 0 8 15 31 12 5 71 NE 0 15 21 75 28 5 144 ENE 1 12 44 50 22 10 139 E 2 5 13 16 9 6 51 ESE 0 2 11 7 10 1 31 SE 0 1 8 10 8 0 27 SSE 1 1 18 9 13 5 47 s 0 1 9 16 8 8 42 SSW 1 2 14 16 23 12 68 SW 0 7 20 28 15 13 83 WSW 1 12 17 37 15 8 90 w 2 8 23 11 10 32 86 WNW 2 6 13 16 6 21 64 NW 3 5 13 32 20 13 86 NNW 1 7 11 16 4 0 39 Variable 1 1 0 0 0 0 2 Total 17 100 263 383 204 139 1106 Hours 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: 7 Page 45of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 2 2 4 12 0 0 20 NNE 2 6 5 18 2 0 33 NE 2 3 10 7 2 0 24 ENE 1 6 8 10 6 3 34 E 1 1 9 22 18 8 59 ESE 0 2 13 14 11 3 43 SE 0 2 7 6 10 0 25 SSE 0 1 6 11 6 5 29 s 0 1 8 13 17 25 64 SSW 0 4 5 15 16 19 59 SW 0 5 10 25 19 30 89 WSW 0 2 5 11 14 9 41 w 2 3 4 6 8 16 39 WNW 0 1 7 7 3 14 32 NW 1 1 8 12 5 0 27 NNW 0 0 8 5 4 4 21 Variable 0 0 0 1 0 0 1 Total 11 40 117 195 141 136 640 Hours 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: 7 Page 46of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 0 1 3 3 1 8 NNE 1 4 0 1 0 0 6 NE 0 1 3 2 0 0 6 ENE 1 0 3 0 0 0 4 E 0 0 2 0 1 2 5 ESE 1 0 0 1 0 0 2 SE 0 2 2 4 1 0 9 SSE 0 5 3 5 4 0 17 s 0 1 2 13 3 8 27 SSW 0 1 4 7 11 11 34 SW 0 0 3 5 4 1 13 WSW 0 4 7 9 1 1 22 w 0 0 4 8 1 2 15 WNW 1 0 6 4 5 0 16 NW 0 0 2 4 1 1 8 NNW 0 0 1 3 2 0 6 Variable 0 0 0 0 0 0 0 Total 4 18 43 69 37 27 198 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 7 Page 47of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 0 0 0 0 SSE 0 0 1 1 0 0 2 s 0 0 1 1 14 1 17 SSW 0 0 1 1 8 1 11 SW 0 0 2 1 0 0 3 WSW 0 0 2 1 0 0 3 w 0 1 0 1 0 0 2 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 0 1 7 7 22 2 3 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: 7 Page 48of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 1 3 0 0 4 ENE 0 0 2 0 0 0 2 E 0 0 2 0 0 0 2 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 1 0 0 0 1 s 0 0 4 2 0 0 6 SSW 0 1 1 5 0 0 7 SW 0 0 9 4 0 0 13 WSW 0 0 8 3 0 0 11 w 0 0 5 2 0 0 7 WNW 0 0 8 5 0 0 13 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 41 24 0 0 66 Hours 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 (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 2 13 0 0 0 15 NNE 0 1 3 1 0 0 5 NE 0 1 6 2 0 0 9 ENE 0 0 2 0 0 0 2 E 0 2 3 0 0 0 5 ESE 0 3 4 0 0 0 7 SE 0 2 0 0 0 0 2 SSE 0 5 3 0 0 0 8 s 0 3 6 6 0 0 15 SSW 0 2 6 6 0 0 14 SW 0 5 9 0 0 0 14 WSW 0 1 14 6 1 0 22 w 0 3 11 7 1 0 22 WNW 0 3 8 7 0 0 18 NW 0 1 4 0 0 0 5 NNW 0 1 6 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 0 35 9 8 35 2 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: 0 Page 50of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 9 4 0 0 0 13 NNE 0 3 5 0 0 0 8 NE 0 7 8 0 0 0 15 ENE 0 7 9 0 0 0 16 E 0 6 3 0 0 0 9 ESE 0 8 5 0 0 0 13 SE 0 6 1 0 0 0 7 SSE 0 6 3 2 0 0 11 s 0 6 4 2 0 0 12 SSW 0 1 5 3 0 0 9 SW 0 6 8 1 0 0 15 WSW 0 3 9 4 0 0 16 w 0 9 13 3 4 0 29 WNW 0 5 9 4 0 0 18 NW 0 0 2 2 0 0 4 NNW 0 2 7 7 0 0 16 Variable 0 1 0 0 0 0 1 Total 0 85 9 5 2 8 4 0 212 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 51 of 76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: July -September 2015 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 25 18 0 0 0 45 NNE 0 19 18 7 0 0 44 NE 0 18 23 5 1 0 47 ENE 0 10 14 5 0 0 29 E 2 20 17 1 0 0 40 ESE 0 22 3 0 0 0 25 SE 1 24 12 0 0 0 37 SSE 2 12 15 9 0 0 38 s 4 16 16 4 0 0 40 SSW 2 13 24 5 0 0 44 SW 0 19 12 7 0 0 38 WSW 2 10 22 6 0 0 40 w 2 12 9 4 2 0 29 WNW 1 10 15 6 1 0 33 NW 0 8 6 4 0 0 18 NNW 0 17 30 5 0 0 52 Variable 0 0 0 0 0 0 0 Total 18 255 254 68 4 0 599 Hours 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 (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 24 14 0 0 0 40 NNE 3 16 9 1 0 0 29 NE 1 8 12 1 0 0 22 ENE 0 7 18 1 0 0 26 E 1 32 23 1 0 0 57 ESE 1 11 3 0 0 0 15 SE 2 12 7 0 0 0 21 SSE 0 13 9 2 0 0 24 s 1 17 24 5 0 0 47 SSW 5 12 18 2 0 0 37 SW 3 9 9 5 0 0 26 WSW 4 17 25 4 0 0 50 w 0 11 8 0 1 0 20 WNW 5 9 8 0 1 0 23 NW 2 8 1 1 0 0 12 NNW 0 16 8 0 0 0 24 Variable 0 0 0 0 0 0 0 Total 30 222 196 23 2 0 473 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 Page 53of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 1 7 0 0 0 0 8 NNE 1 5 0 0 0 0 6 NE 1 1 0 0 0 0 2 ENE 0 1 1 0 0 0 2 E 3 26 14 0 0 0 43 ESE 3 11 0 0 0 0 14 SE 1 19 2 0 0 0 22 SSE 2 14 3 0 0 0 19 s 2 26 9 0 0 0 37 SSW 4 30 21 0 0 0 55 SW 6 19 26 0 0 0 51 WSW 0 15 16 4 0 0 35 w 3 13 18 0 0 0 34 WNW 6 18 2 0 0 0 26 NW 1 9 1 0 0 0 11 NNW 2 4 0 0 0 0 6 Variable 0 1 1 0 0 0 2 Total 36 219 114 4 0 0 373 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 Page 54of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: July -September 2015 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 1 0 0 0 0 0 1 ENE 0 1 0 0 0 0 1 E 0 6 2 0 0 0 8 ESE 2 34 1 0 0 0 37 SE 1 24 0 0 0 0 25 SSE 2 25 2 0 0 0 29 s 0 41 8 0 0 0 49 SSW 0 48 14 0 0 0 62 SW 2 24 7 0 0 0 33 WSW 1 13 3 0 0 0 17 w 1 19 6 0 0 0 26 WNW 2 21 0 0 0 0 23 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 12 257 43 0 0 0 3 1 2 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 Page 55of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 56 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: July -September 2015 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 1 0 0 0 0 1 s 0 0 1 0 1 0 2 SSW 0 0 0 0 1 0 1 SW 0 0 0 1 0 0 1 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 1 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 0 1 1 2 2 0 6 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 57 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 5 0 0 9 NNE 0 0 0 1 0 0 1 NE 0 0 0 6 4 0 10 ENE 0 0 0 1 0 0 1 E 0 0 3 0 0 0 3 ESE 0 0 0 0 0 0 0 SE 0 1 0 0 0 0 1 SSE 0 0 1 0 0 0 1 s 0 0 3 2 3 0 8 SSW 0 0 2 0 7 1 10 SW 0 1 9 5 4 0 19 WSW 0 0 3 B 3 0 14 w 0 0 6 0 2 0 B WNW 0 0 4 9 2 0 15 NW 0 0 2 6 1 0 9 NNW 0 0 0 1 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 2 37 44 26 1 110 Hours 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 58of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 13 24 24 0 0 61 NNE 1 12 19 19 13 1 65 NE 0 10 27 31 11 4 83 ENE 0 12 21 14 5 0 52 E 0 16 18 8 0 0 42 ESE 0 11 17 5 0 0 33 SE 1 24 22 6 1 0 54 SSE 2 9 20 14 4 1 50 s 3 7 19 18 4 2 53 SSW 1 8 30 18 12 3 72 SW 1 10 28 16 4 4 63 WSW 0 8 19 27 13 1 68 w 1 10 26 19 8 8 72 WNW 1 9 23 13 9 2 57 NW 1 6 6 18 10 2 43 NNW 0 2 25 21 3 0 51 Variable 0 1 0 0 0 0 1 Total 12 168 344 271 97 28 920 Hours 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 STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 3 8 16 6 0 33 NNE 3 3 8 18 4 0 36 NE 1 3 7 8 4 1 24 ENE 0 5 8 24 11 0 48 E 0 3 13 34 7 1 58 ESE 1 1 15 17 0 0 34 SE 2 4 10 12 2 0 30 SSE 0 6 10 18 7 2 43 s 1 10 9 20 20 5 65 SSW 0 6 18 10 30 8 72 SW 0 3 11 10 15 6 45 WSW 1 2 15 16 24 0 58 w 1 6 9 15 7 0 38 WNW 1 3 2 12 5 1 24 NW 0 1 4 9 3 1 18 NNW 1 6 10 4 4 0 25 Variable 0 0 0 0 0 0 0 Total 12 65 157 243 149 25 651 Hours 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 60 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 3 1 1 1 0 7 NNE 0 1 2 0 0 0 3 NE 1 1 0 0 0 0 2 ENE 0 2 0 0 0 0 2 E 1 3 1 5 4 0 14 ESE 0 1 4 13 5 0 23 SE 1 4 3 20 3 0 31 SSE 1 5 8 10 4 0 28 s 1 5 15 15 8 4 48 SSW 1 7 18 22 22 6 76 SW 1 3 13 24 22 0 63 WSW 0 3 11 7 10 5 36 w 0 2 11 7 6 0 26 WNW 0 2 8 11 14 3 38 NW 0 6 7 10 4 0 27 NNW 0 4 2 4 1 0 11 Variable 0 1 1 0 0 0 2 Total 8 53 105 149 104 18 437 Hours 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 STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 2 0 0 2 SE 0 0 1 9 0 0 10 SSE 0 0 1 11 0 0 12 s 0 0 0 11 2 1 14 SSW 0 0 2 9 5 3 19 SW 0 0 3 1 3 1 8 WSW 0 0 1 2 0 0 3 w 0 1 2 0 0 0 3 WNW 0 1 2 5 1 1 10 NW 0 0 1 2 0 0 3 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 2 13 52 11 6 84 Hours 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 STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 0 1 NE 0 0 0 2 3 0 5 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 4 2 6 SSE 0 0 0 2 4 1 7 s 0 1 0 4 3 0 8 SSW 0 1 0 0 0 0 1 SW 0 0 1 4 3 0 8 WSW 0 0 0 2 0 0 2 w 0 0 0 0 0 0 0 WNW 0 0 0 1 0 0 1 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 2 1 1 7 17 3 4 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: 1 7 9 Page 63of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 2 0 0 0 2 NNE 0 0 0 1 0 0 1 NE 0 0 0 6 1 0 7 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 2 0 0 0 2 SE 0 1 0 1 0 0 2 SSE 0 1 0 1 0 0 2 s 0 0 1 0 0 0 1 SSW 0 0 0 4 0 0 4 SW 0 1 3 7 2 0 13 WSW 0 0 1 1 1 0 3 w 0 0 0 0 0 0 0 WNW 0 0 1 1 0 0 2 NW 0 0 5 3 0 0 8 NNW 0 0 2 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 3 17 2 5 4 0 4 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: 179 Page 64of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 3 1 1 0 0 5 NNE 0 2 0 0 0 0 2 NE 0 1 3 2 0 0 6 ENE 0 0 0 0 0 0 0 E 0 0 1 0 0 0 1 ESE 0 0 1 0 0 0 1 SE 0 2 0 0 0 0 2 SSE 0 1 1 1 0 0 3 s 0 3 1 5 1 0 10 SSW 0 0 0 3 1 0 4 SW 0 1 3 7 0 0 11 WSW 0 3 5 1 0 0 9 w 0 2 0 2 0 0 4 WNW 0 0 3 1 0 0 4 NW 0 0 2 2 0 0 4 NNW 0 0 4 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 18 2 5 2 5 2 0 7 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: 179 Page 65of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 6 20 10 0 0 38 NNE 2 24 38 3 0 0 67 NE 0 22 29 26 6 0 83 ENE 0 4 14 28 10 15 71 E 1 0 5 25 5 0 36 ESE 0 4 3 11 0 0 18 SE 0 4 10 11 4 5 34 SSE 0 8 6 11 4 4 33 s 0 8 17 13 6 0 44 SSW 1 13 16 12 8 1 51 SW 4 15 9 12 4 0 44 WSW 1 10 22 20 7 4 64 w 0 11 45 33 14 3 106 WNW 0 4 27 25 4 0 60 NW 0 2 8 8 4 0 22 NNW 0 6 12 8 1 0 27 Variable 0 0 0 0 0 0 0 Total 11 141 281 256 77 32 798 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 21 Hours of missing stability measurements in all stability classes: 179 Page 66 of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 10 3 0 0 0 13 NNE 0 16 3 1 0 0 20 NE 0 1 2 2 0 0 5 ENE 0 2 5 5 0 0 12 E 0 2 28 9 0 0 39 ESE 0 6 1 1 0 0 8 SE 0 5 11 7 0 3 26 SSE 0 6 13 7 3 12 41 s 2 6 21 18 3 4 54 SSW 0 8 26 43 21 0 98 SW 1 3 12 20 4 2 42 WSW 0 4 18 25 6 1 54 w 2 4 8 15 13 11 53 WNW 1 5 10 3 10 10 39 NW 1 7 12 0 1 0 21 NNW 0 1 10 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 7 86 183 156 61 43 536 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 11 Hours of missing stability measurements in all stability classes: 179 Page 67of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 0 0 3 NNE 1 0 0 0 0 0 1 NE 1 1 0 0 0 0 2 ENE 1 0 0 0 0 0 1 E 1 7 6 0 0 0 14 ESE 0 1 2 0 0 0 3 SE 0 6 0 0 0 0 6 SSE 1 10 6 4 0 0 21 s 1 7 20 13 0 0 41 SSW 1 6 22 15 0 0 44 SW 1 3 20 9 0 0 33 WSW 1 2 12 15 0 0 30 w 0 8 15 0 2 0 25 WNW 0 27 13 0 4 1 45 NW 0 5 0 0 0 0 5 NNW 0 2 1 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 9 87 118 56 6 1 277 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 7 Hours of missing stability measurements in all stability classes: 179 Page 68 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 2 3 0 0 0 0 5 ESE 0 14 4 0 0 0 18 SE 1 4 2 0 0 0 7 SSE 3 8 9 5 0 0 25 s 0 9 15 1 0 0 25 SSW 0 3 27 3 0 0 33 SW 1 6 14 8 0 0 29 WSW 2 5 12 1 0 0 20 w 0 14 7 0 0 0 21 WNW 1 25 1 0 0 0 27 NW 1 2 0 0 0 0 3 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 11 93 91 18 0 0 213 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 7 Hours of missing stability measurements in all stability classes: 179 Page 69of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 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: 1 79 Page 70of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 2 2 4 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 2 2 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: 1 7 9 Page 71 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: October -December 2015 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 1 1 NE 0 0 0 0 1 6 7 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 2 2 s 0 0 0 0 0 3 3 SSW 0 0 0 0 0 0 0 SW 0 0 0 2 4 3 9 WSW 0 0 0 1 1 0 2 w 0 0 0 0 0 0 0 WNW 0 0 0 1 0 0 1 NW 0 0 2 0 2 0 4 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 0 3 4 8 15 3 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: 179 Page 72of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 8 3 13 12 3 39 NNE 0 9 16 32 12 1 70 NE 1 7 26 29 24 27 114 ENE 0 5 9 10 22 9 55 E 0 0 1 7 19 9 36 ESE 0 0 3 6 8 5 22 SE 0 5 1 4 8 9 27 SSE 1 6 14 5 9 26 61 s 1 8 12 7 18 8 54 SSW 0 4 14 13 19 23 73 SW 3 13 17 22 15 8 78 WSW 0 4 11 18 12 8 53 w 0 3 16 30 22 34 105 WNW 0 0 8 31 17 8 64 NW 0 0 1 18 22 7 48 NNW 0 2 2 9 5 1 19 Variable 0 0 0 0 0 0 0 Total 6 74 154 254 244 186 918 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 50 Hours of missing stability measurements in all stability classes: 179 Page 73of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 0 5 6 3 14 NNE 0 0 5 8 2 0 15 NE 0 3 5 2 9 2 21 ENE 0 2 6 3 0 1 12 E 0 0 4 4 16 9 33 ESE 0 3 1 1 9 0 14 SE 0 3 3 7 6 5 24 SSE 0 0 6 11 12 20 49 s 0 2 3 9 18 18 50 SSW 1 1 5 21 34 80 142 SW 1 1 4 17 17 19 59 WSW 1 0 7 11 12 16 47 w 0 0 2 6 18 36 62 WNW 0 0 2 13 8 36 59 NW 0 0 4 16 13 1 34 NNW 0 1 2 8 5 0 16 Variable 0 0 0 0 0 0 0 Total 3 16 59 142 185 246 651 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 5 Hours of missing stability measurements in all stability classes: 179 Page 74of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 7 2 1 14 NNE 0 1 3 0 1 0 5 NE 0 1 0 0 2 0 3 ENE 0 3 0 0 0 0 3 E 1 4 0 0 0 0 5 ESE 0 1 0 5 2 0 8 SE 1 2 0 2 4 2 11 SSE 0 0 7 3 1 1 12 s 0 0 7 2 3 17 29 SSW 2 0 1 18 16 15 52 SW 0 0 5 5 18 17 45 WSW 0 0 3 4 4 9 20 w 1 0 4 3 7 4 19 WNW 0 0 3 10 10 0 23 NW 0 3 7 19 12 0 41 NNW 0 1 4 8 1 0 14 Variable 0 0 0 0 0 0 0 Total 6 1 7 46 86 83 66 304 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: 179 Page 75of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 1 0 0 2 NNE 0 0 1 0 0 0 1 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 0 1 0 3 0 4 SE 0 1 0 2 3 0 6 SSE 0 4 1 1 0 1 7 s 0 0 0 2 1 3 6 SSW 0 0 0 3 3 2 8 SW 0 0 1 5 2 1 9 WSW 0 0 1 0 3 6 10 w 0 1 0 0 2 0 3 WNW 0 1 1 2 0 0 4 NW 0 1 0 0 0 0 1 NNW 0 1 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 11 6 16 17 13 63 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 179 Page 76of76 Appendix A Offsite Dose Calculation Manual Revision 6 ODCM Change Summary Matrix Determination identifier Editorial and grammatical

-Determination EG 1 Title Paae Title oaae EG 2 TOC TOC EG 3 TOC , TOC, page EG paaes 9-10 9 4 1-1.1-3 1-1.1-3 EG 5 1-12.4.1-3 1-12.4.1-3 EG 6 1-812.5.1-1 1-812.5.1-1 EG 7 11.1-14 11.1-14 EG 8 N/A 11.1-16 EG 9 11.1-17 11.1-17 EG 10 11.1-18 11.1-18 EG 11 11.1-20 11.1-20 EG 12 11.2-1 11.2-1 EG 13 11.2-2 11.2-2 EG 14 11.2-7 11.2-7 EG 15 11.2-8 11.2-8 EG 16 11.2-9 11.2-9 EG 17 11.2-10 11.2-9 EG 18 11.2-11 11.2-10 EG 19 11.2-12 11.2-11 EG 20 N/A 11.2-11 EG 21 11.2-13 11.2-12 EG 22 11.2-14 11.2-12 EG 23 N/A 11.2-12 EG 24 11.2-15 11.2-13 EG Paae 1 of 3 Description of change Added effective date. Table of Contents (TOC) was revised to reflect changes due to content added or removed. Spacing reduced to incorporate information on a single page. Added definition for "POSITION INDICATION VERIFICATION" as it relates to the position of the Slowdown Flow Control Valve actuator shaft. Reference AR #1515366-02. Corrected misspelling in definition of variable "B" from "counds" to "counts". Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed reference

  1. 60 which has been superseded per AR #1426577-07 and EC #375636. Added references
  1. 108 and #109 that supersede reference
  1. 60 per AR #1426577-07 and EC #375636. Removed revision bars left over from revision #4. Reference AR #1671059-02.

Removed revision bars left over from revision #4. Reference AR #1671059-02.

Inserted parenthesis ahead of" ... Cont'd" at top of page. Corrected misspelling from "INSTRUMENATATION" to "INSTRUMENTATION". Removed revision bars left over from revision #4. Reference AR #1671059-02.

Corrected editorial errors in sections 2.2.2 and 2.2.3. Removed revision bar left over from revision #4. Reference AR #1671059-02.

Corrected editorial error in section 2.4.1. Removed revision bar left over from revision #4. Reference AR #1671059-02. Replaced "O" in OPLD5J with "O" in section 2.5.1. Replaced "O" in OPLD2J with "O" in section 2.5.2. Removed page break in section 2.5.2. Replaced "00" in 1(2)D18-N009 with "00" in section 2.5.3. Corrected editorial error in section 2.6.2 by surrounding term at end of sentence with oarentheses.

Removed page break in section 2.6.2. Added paqe break after section 2.6.4. Removed space from inside parentheses of equation 2-5. Added equation number "(2-5)". Reference AR #1552182-02.

Added eauation number "(2-6)". Reference AR #1552182-02.

Removed oaae break. Added page break following section 2.6.5. Removed oaae break in section 2.6.7.

25 11.2-16 26 11.2-18 27 11.2-19 28 11.2-20 29 11.2-22 30 11.3-5 31 11.3-6 32 11.3-7 33 11.4-1 34 11.4-2 35 11.4-3 36 11.4-4 37 11.4-5 38 11.4-7 39 11.4-8 40 11.4-9 41 11.4-10 42 11.4-11 43 11.4-22 44 11.4-23 45 11.4-24 46 11.4-27 and 11.4-28 47 11.4-29 and 11.4-30 48 11.4-31 and 11.4-32 49 11.6-2 50 11.6-6 11.2-13 11.2-16 11.2-17 N/A 11.2-19 11.3-5 11.3-6 11.3-7 11.4-1 11.4-2 11.4-3 11.4-4 11.4-5 11.4-7 11.4-8 11.4-9 11.4-10 11.4-11 11.4-22 11.4-23 11.4-24 to 11.4-38 11.4-41 and 11.4-42 11.4-43 and 11.4-44 11.4-45 and 11.4-46 11.6-2 11.6-6 Determination identifier EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG Paae 2 of 3 Description of change Corrected editorial errors in "Pretreatment Monitor" and "Post-treatment Monitor" sections.

Removed space in "RM-23". Removed revision bars left over from revision #4. Reference AR #1671059-02.

Removed "FIGURE 10-1" from title box as it is no longer valid. Removed revision bars left over from revision #4. Reference AR #1671059-02.

Removed blank page. Removed revision bars left over from revision #4. Reference AR #1671059-02.

Added equation number "(3-3)". Added equation number "(3-4)". Added equation number "(3-5)". Removed revision bar left over from revision #4. Reference AR #1671059-02.

Updated section 4.1.1 from" ... dispersion parameters shown in Table 4-2 through Table 4-5 ... " to " ... dispersion parameters shown in Table 4-2 through Table 4-6 ... " due to the re-insertion of historical Table 4-6. Refer to Item #45. Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Corrected the title of Table 4-5, page 1 from "D/Q at the Nearest Milk Cow and Meat Animal Locations Within 5 Miles" to "X/Q and D/Q at the Nearest Meat Animal Locations Within 5 Miles". Corrected the title of Table 4-5, page 2 from "D/Q at the Nearest Milk Cow and Meat Animal Locations Within 5 Miles" to "X/Q and D/Q at the Nearest Milk Cow Locations Within 5 Miles". Re-inserted historical Table 4-6 that was removed in Revision 4. Reference AR #1552182-02.

Table 4-9 updated to enhance clarity. Table 4-10 updated to enhance clarity. Table 4-11 updated to enhance clarity. Added "33 Foot Elevation Data" to Table 4-11 (paae 1 of 2) to match Table 4-11 (paae 2 of 2). Added "a." to "Radioiodine and Particulates" in the Exposure Pathway column. Updated distances for well locations L-28 #6, L-28 #4, and L-28 #5 to 4.1 miles, 7.0 miles, and 6.7 miles, respectively.

Reference AR #1507387-02.

51 11-6-7 11.6-7 Determination identifier EG Paae 3 of 3 Description of change Reduced font size for entire page. Added "Refer to most recent Land Use Census for specific garden locations" to enhance sampling locations for Food Products --Table 6-1, Section 4.c.a. & 4.c.b. Reference AR #1507387-02.

Appendix B Offsite Dose Calculation Manual Part I RECS Part II ODCM LaSalle Station Units 1 and 2 Revision 6 NOTE: The implementation date of Revision 6 was January 6, 2015 and not November 26, 2014 as indicated on the ODCM Cover page.

OFFSITE DOSE CALCULATION MANUAL PART I RECS PARTIIODCM LaSalle Station Units 1and2 November 26, 2014 CY-LA-170-301 Revision 6 ODCM TABLE OF CONTENTS PART I -RADIOLOGICAL EFFLUENT CONTROLS (RECS) CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE 1.0 USE AND APPLICATION

........................................................................................

1-1.1-1 1.1 DEFINITIONS

..........................................................................................................

1-1.1-1 1.2 LOGICAL CONNECTORS

......................................................................................

1-1.2-1 1.3 COMPLETION TIMES .............................................................................................

1-1.3-1 1.4 FREQUENCY

..........................................................................................................

1-1.4-1 1.5 REC & RSA IMPLEMENTATION

............................................................................

1-1.5-1 2.0-11.0 NOT USED 12.0 ODCM RADIOLOGICAL EFFLUENT CONTROL (REC) APPLICABILITY

............

1-12.0-1 12.0 ODCM RADIOLOGICAL EFFLUENT SURVEILLANCE REQUIREMENT (RSA) APPLICABILITY

..............................................................

1-12.0-3 12.1 NOT USED 12.2 INSTRUMENTATION

.........................................................................................

1-12.2.1-1 12.2.1 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION

..............................................................................

1-12.2.1-1 12.2.2 Radioactive GASEOUS EFFLUENT MONITORING INSTRUMENTATION

..............................................................................

1-12.2.2-1 . 12.3 LIQUID EFFLUENTS

.........................................................................................

1-12.3.1-1 12.3.1 Liquid Effluent Concentration

...................................................................

1-12.3.1-1 12.3.2 Dose from Liquid Effluents .......................................................................

1-12.3.2-1 12.3.3 Liquid Radwaste Treatment System ........................................................

1-12.3.3-1 Page 1 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS PART I -RADIOLOGICAL EFFLUENT CONTROLS (RECS) CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE 12.4 GASEOUS EFFLUENTS AND TOTAL DOSE ....................................................

1-12.4.1-1 12.4.1 Gaseous Effluent Dose Rates .................................................................

1-12.4.1-1 12.4.2 Dose from Noble Gases .........................................................................

1-12.4.2-1 12.4.3 Dose from lodine-131, lodine-133, Tritium and Radioactive Materials in Particulate Form ......................................................................................

1-12.4.3-1 12.4.4 Gaseous Radwaste Treatment System ...................................................

1-12.4.4-1 12.4.5 Ventilation Exhaust Treatment System ....................................................

1-12.4.5-1 12.4.6 Mark II Containment

................................................................................

1-12.4.6-1 12.4.7 Total Dose ...............................................................................................

1-12.4.7-1 12.4.8 Main Condenser

......................................................................................

1-12.4.8-1 12.4.9 Dose Limits For Members Of The Public .................................................

1-12.4.9-1 12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM .....................

1-12.5.1-1 12.5.1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP) 1-12.5.1-1 12.5.2 LAND USE CENSUS ...............................................................................

1-12.5.2-1 12.5.3 lnterlaboratory COMPARISON PROGRAM .............................................

1-12.5.3-1 12.5.4 METEOROLOGICAL MONITORING PROGRAM ...................................

1-12.5.4-1 12.6 REPORTING REQUIREMENTS

........................................................................

1-12.6.1-1 12.6.1 Annual Radiological Environmental Operating Report ..........................

1-12.6.1-1 12.6.2 Annual Radioactive Effluent Release Report ........................................

1-12.6.2-1 12.6.3 Off-site Dose Calculation Manual (ODCM) ...........................................

1-12.6.3-1 12.6.4 Major Changes to Radioactive Waste Treatment Systems (Liquid and Gaseous) .......................................................................................

1-12.6.4-1 Page 2 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS PART I -RADIOLOGICAL EFFLUENT CONTROLS (RECS) CY-LA-170-301 Revision 6 ODCM Parts I and II B BASES ......................................................................................................................

1-8-1 8.12.0 REC & RSA APPLICABILITY BASES ..................................................

1-812.0-1 8.12.1 NOT USED 8.12.2 INSTRUMENTATION

........................................................................

1-B 12.2.1-1 B.12.2.1 Radioactive Liquid Effluent Monitoring Instrumentation

...............................................................

1-812.2.1-1 8.12.2.2 Radioactive Gaseous Effluent Monitoring Instrumentation

..............................................

1-812.2.2-1 812.3 LIQUID EFFLUENTS

.........................................................................

1-812.3.1-1 B.12.3.1 Liquid Effluent Concentration

..........................................

1-812.3.1-1 B.12.3.2 Dose from Liquid Effluents

..............................................

1-812.3.2-1 8.12.3.3 Liquid Radwaste Treatment Systems ..............................

1-812.3.3-1 B.12.4 GASEOUS EFFLUENTS

& TOTAL DOSE ........................................

1-812.4.1-1 8.12.4.1 Gaseous Effluent Dose Rates .........................................

1-812.4.1-1 8.12.4.2 Dose From Noble Gases .................................................

1-812.4.2-1 B.12.4.3 Dose From lodine-131, lodine-133Tritium And Radioactive Materials In Particulate Form .......................

1-812.4.3-1 B.12.4.4 Gaseous Radwaste Treatment (Offgas) System ..............................................................

1-812.4.4-1 B.12.4.5 Ventilation Exhaust Treatment System ...........................

1-812.4.5-1 8.12.4.6 Mark II Containment

........................................................

1-812.4.6-1 8.12.4.7 Total Dose .......................................................................

1-812.4.7-1 B.12.4.8 Main Condenser

..............................................................

1-812.4.8-1 B.12.4.9 Dose Limits for Members of the Public ............................

1-812.4.9-1 8.12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ..... 1-812.5.1-1 8.12.5.1 REMP ..............................................................................

1-812.5.1-1 8.12.5.2 Land Use Census ............................................................

1-812.5.2-1 B.12.5.3 lnterlaboratory Comparison Program ..............................

1-812.5.3-1 B.12.5.4 Meteorological Monitoring Program ................................

1-B 12.5.4-1 Page 3 of 10 LaSalle ODCM Table of Contents TABLE OF CONTENTS PART II -ODCM CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE

1.0 INTRODUCTION

-ODCM GENERAL INFORMATION

............................................

11.1-1 1.1 STAUCTUAEOFTHEODCM

.......................................................................

11.1-1 1.2 REGULATIONS

..............................................................................................

11.1-2 1.2.1 Code of Federal Regulations

...............................................................

11.1-2 1.2.2 Radiological Effluent Technical Specifications

.....................................

11.1-4 1.2.3 Offsite Dose Calculation Manual ..........................................................

11.1-5 1.2.4 Overlapping Requirements

..................................................................

11.1-5 1.2.5 Dose Receiver Methodology

................................................................

11.1-6 1.3 OFFSITE DOSE CALCULATION PARAMETERS

........................................

11.1-10

1.4 REFERENCES

.............................................................................................

11.1-10 2.0 INSTRUMENTATION AND SYSTEMS .....................................................................

11.2-1 2.1 LIQUID RELEASES ........................................................................................

11.2-1 2.1.1 Radwaste Discharge tanks ............................................................

11.2-1 2.1.2 Cooling Pond Blowdown ................................................................

11.2-1 2.2 RADIATION MONITORS ................................................................................

11.2-2 2.2.1 Liquid Radwaste Effluent Monitor ..................................................

11.2-2 2.2.2 Service Water Effluent Monitor ......................................................

11.2-2 2.2.3 AHR Heat Exchange Cooling Water Effluent Monitors ..................

11.2-2 2.3 LIQUID RADIATION EFFLUENT MONITORS ALARM AND TRIP SETPOINTS

..........................................................................................

11.2-2 2.3.1 Liquid Radwaste Effluent Monitor ..................................................

11.2-2 2.3.2 Service Water Effluent Monitor ......................................................

11.2-3 2.3.3 AHR Heat Exchanger Cooling Water Effluent Monitors .................

11.2-3 2.3.4 Discharge Flow Rates ...................................................................

11.2-4 2.3.5 Allocation of Effluents from Common Release Points ...................

11.2-5 2.3.6 Projected Doses from Releases ....................................................

11.2-6 2.3.7 Solidification of Waste/Process Control Program ..........................

11.2-6 2.4 AIRBORNE RELEASES .................................................................................

11.2-6 2.4.1 Condenser Offgas Treatment System ...........................................

11.2-7 2.4.2 Ventilation Exhaust Treatment System ..........................................

11.2-8 2.5 GASEOUS EFFLUENT RADIATION MONITORS ..........................................

11.2-8 2.5.1 Station Vent Stack Effluent Monitor ...............................................

11.2-8 2.5.2 Standby Gas Treatment System Effluent Monitor .........................

11.2-8 2.5.3 Reactor Building Ventilation Monitors ............................................

11.2-9 2.5.4 Condenser Air Ejector Monitors .....................................................

11.2-9 2.5.5 Turbine Building Trackway and North Service Building ...............

11.2-1 O Page 4 of 10 LaSalle ODCM Table of Contents PART II -ODCM 2.6 TABLE OF CONTENTS CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE GASEOUS RADIATION EFFLUENT ALARM AND TRIP SETPOINTS

.11.2-10 2.6.1 Reactor Building Vent Effluent Monitor ........................................

11.2-1 O 2.6.2 Condenser Air Ejector Monitors ...................................................

11.2-10 2.6.3 Station Vent Stack Effluent Monitor .............................................

11.2-11 2.6.4 Standby Gas Treatment Stack Monitor ........................................

11.2-11 2.6.5 Release Limits .............................................................................

11.2-12 2.6.6 Release Mixture ..........................................................................

11.2-13 2.6.7 Conversion Factors .....................................................................

11.2-13 2.6.8 HVAC Flow Rates ........................................................................

11.2-13 2.6.9 Allocation of Effluents from Common Release Points .................

11.2-14 2.6.1 O Dose Projections

.........................................................................

11.2-14 3.0 LIQUID EFFLUENTS

..........................................................................................

11.3-1 3.1 LIQUID EFFLUENT RELEASES-GENERAL INFORMATION

...............

11.3-1 3.2 LIQUID EFFLUENT CONCENTRATIONS

...............................................

11.3-2 3.3 LIQUID EFFLUENT DOSE CALCULATION REQUIREMENTS

...............

11.3-4 3.4 DOSE METHODOLOGY

..........................................................................

11.3-5 3.4.1 Liquid Effluent Dose Method: General..

.........................................

11.3-5 3.4.2 Potable Water Pathway .................................................................

11.3-6 3.4.3 Fish Ingestion Pathway .................................................................

11.3-7 3.4.4 Offsite Doses .................................................................................

11.3-7 3.4.5 Drinking Water ...............................................................................

11.3-7 3.5 BIOACCUMULA TION FACTORS ............................................................

11.3-7 4.0 GASEOUS EFFLUENTS

....................................................................................

11.4-1 4.1 GASEOUS EFFLUENTS

-GENERAL INFORMATION

..........................

11.4-1 4.2 GASEOUS EFFLUENTS

-DOSE AND DOSE RATE CALCULATION REQUIREMENTS

....................................................................................

11.4-2 4.2.1 Instantaneous Dose Rates ............................................................

11.4-2 4.2.2 Time Averaged Dose from Noble Gas ...........................................

11.4-5 4.2.3 Time Averaged Dose from Non-Noble Gas Radionuclides

............

11.4-9 Page 5 of 10 LaSalle ODCM Table of Contents TABLE OF CONTENTS PART II -ODCM CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE 5.0 TOTALDOSE

.....................................................................................................

11.5-1 5.1 TOTAL DOSE CALCULATION REQUIREMENTS

...................................

11.5-1 5.1.1 Total Effective Dose Equivalent Limits; 1 OCFR20 and 40CFR190 .....................................................................................

ll.5-1 5.1.2 Total Dose Calculation Methodology

.............................................

11.5-2 5.1.3 BWR Skyshine ..............................................................................

11.5-2 5.2 BWR SKYSHINE CALCULATION

.............................................................

11.5-3 5.3 ONSITE RADWASTE AND RAD MATERIAL STORAGE FACILITIES

..... 11.5-6 5.3.1 Process Waste Storage Facilities

................................................

11.5-6 5.3.2 DAW Storage Facilities

................................................................

11.5-6 5.3.3 ISFSI Facilities

.............................................................................

11.5-6 5.4 METHODOLOGY

......................................................................................

11.5-6 5.5 TOTAL DOSE ............................................................................................

11.5-7 5.6 COMPLIANCE TO TOTAL DOSE LIMITS .................................................

11.5-8 5.6.1 Total Effective Dose Equivalent Limit-10CFR20 Compliance

..... 11.5-8 5.6.2 Dose to a MEMBER OF THE PUBLIC in the Unrestricted Area ...............................................................................................

11.5-8 5.6.3 Dose to a MEMBER OF THE PUBLIC in the Restricted Area ....... 11.5-8 5.6.4 Total Dose Due to the Uranium Fuel Cycle (40CFR190)

...............

ll.5-9 5.7 WHEN COMPLIANCE ASSESSMENT IS REQUIRED ...........................

11.5-10 6.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ......................

11.6-1 Page 6 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS LIST OF TABLES PART I -RADIOLOGICAL EFFLUENT CONTROLS (RECS) CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE Table 1-1 Compliance Matrix .............................................................................

1-1 . 1-6 Table R12.2.1-1 Radioactive Liquid Effluent Monitoring Instrumentation

................

1-12.2.1-5 Table R12.2.2-1 Radioactive Gaseous Effluent Monitoring Instrumentation

...........

1-12.2.2-5 Table R12.2.2-2 Radioactive Gaseous Effluent Monitoring Instrumentation Applicability

...................................................................................

1-12.2.2-7 Table R12.3.1-1 Allowable Concentration of Dissolved or Entrained Noble Gases Released from the Site to Unrestricted Areas in Liquid Waste .................................................................................

1-12.3.1-3 Table R12.3.1-2 Radioactive Liquid Waste Sampling and Analysis Program ..........

1-12.3.1-4 Table A12.4.1-1 Radioactive Gaseous Waste Sampling and Analysis Program ..... 1-12.4.1-2 Table R12.5.1-1 Radiological Environmental Monitoring Program ..........................

1-12.5.1-6 Table R12.5.1-2 Reporting Levels for Radioactivity Concentrations in Environmental Samples ..............................................................

1-12.5.1-11 Table R12.5.1-3 Detection Capabilities for Environmental Sample Analysis . Lower Limit of Detection

.............................................................

1-12.5.1-12 PART II -ODCM Table 1-1 Regulatory Dose Limit Matrix ..........................................................................

11.1-7 Table 1-2 Dose Assessment Receivers

..........................................................................

11.1-8 Table 1-3 Miscellaneous Dose Assessment Factors: Environmental Parameters

........ 11.1-17 Table 1-4 Stable Element Transfer Data ......................................................................

11.1-19 Table 2-1 Assumed Composition Of the LaSalle Station Noble Gas Effluent..

.............

11.2-15 Page 7 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS LIST OF TABLES CY *LA* 170-301 Revision 6 ODCM Parts I and II PART II -ODCM PAGE Table 3-1 Bioaccumulation Factors (Bfi) to be Used in the Absence of Site-Specific Data ..................................................................................................

11.3-8 Table 4-1 Critical Ranges .............................................................................................

11.4-18 Table 4-2 Average Wind Speeds ..................................................................................

11.4-19 Table 4-3 X/Q and D/Q Maxima at or Beyond the Unrestricted Area Boundary ...........

11.4-20 Table 4-4 X/Q and D/Q Maxima at or Beyond the Restricted Area Boundary ..............

11.4-21 Table 4-5 X/Q and D/Q at the Nearest Meat Animal Locations within 5 miles ..............

11.4-22 (Page 1) Table 4-5 X/Q and D/Q at the Nearest Milk Cow Locations within 5 miles ...................

11.4-23 (Page 2) Table 4-6 Maxium Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary For Various Nuclides ...................

11.4.24 Table 4-7 Deleted .........................................................................................................

11.4-39 Table 4-8 Parameters for Calculations of N-16 Skyshine Radiation From LaSalle ..........................................................................................................

11.4-40 Table 4-9 Elevated Level Joint Frequency Distribution Table Summary .......................

11.4-41 Table 4-10 Mid Elevation Joint Frequency Distribution Table Summaries

......................

11.4-43 Table 4-11 Ground Level Joint Frequency Distribution Table Summary .........................

11.4-45 Table 4-12 Station Characteristics

......................................................................................

11.4-47 Table 4-13 Dose Factors for Noble Gases ......................................................................

11.4-48 Table 4-14 External Dose Factors for Standing on Contaminated Ground DFGi 1 (mrem/hr per pCi/ m 2) ...................................................................................

11.4-49 Table 4-15 Maximum 81 and V1 at or Beyond the Unrestricted Area Boundary ...............

11.4-52 Table 4-16 Infant Drinking Water AiT ...............................................................................

11.4-67 Page 8 of 10 LaSalle ODCM Table of Contents CY *LA* 170*301 Revision 6 ODCM Parts I and II Table 4-17 Child Drinking Water Air ...............................................................................

11.4-71 Table 4-18 Teen Drinking Water Arr ...............................................................................

11.4-75 Table 4-19 Adult Drinking Water Arr ...............................................................................

11.4-79 Table 4-20 Infant Fish Arr ...............................................................................................

11.4-83 Table 4-21 Child Fish Arr ................................................................................................

11.4-87 Table 4-22 Teen Fish Air ................................................................................................

11.4-91 Table 4-23 Adult Fish Air ................................................................................................

11.4-95 Table 4-24 Infant Inhalation P1 ........................................................................................

11.4-99 Table 4-25 Child Inhalation Pi .......................................................................................

11.4-103 Table 4-26 Teen Inhalation P 1 .......................................................................................

ll.4-107 Table 4-27 Adult Inhalation Pj .......................................................................................

11.4-111 Table 4-28 All Age Groups Ground Plane R1 ................................................................

11.4-115 Table 4-29 Infant Inhalation Ri ......................................................................................

11.4-119 Table 4-30 Child Inhalation Ri .......................................................................................

11.4-123 Table 4-31 Teen Inhalation Rt .......................................................................................

11.4-127 Table 4-32 Adult Inhalation Rt .......................................................................................

11.4-131 Table 4-33 Infant Vegetation R1 ....................................................................................

11.4-135 Table 4-34 Child Vegetation R1 .....................................................................................

11.4-139 Table 4-35 Teen Vegetation Ri .....................................................................................

11.4-143 Table 4-36 Adult Vegetation R1 .....................................................................................

11.4-147 Table 4-37 Infant Milk R1 ...............................................................................................

11.4-151 Table 4-38 Child Milk Ri ................................................................................................

11.4-155 Table 4-39 Teen Milk Rt ................................................................................................

11.4-159 Table 4-40 Adult Milk R1 ................................................................................................

11.4-163 Table 4-41 Infant Meat Rt .............................................................................................

11.4-167 Table 4-42 Child Meat R1 ..............................................................................................

11.4-171 Table 4-43 Teen Meat R1 ..............................................................................................

11.4-175 Table 4-44 Adult Meat Rt ..............................................................................................

11.4-179 Table 6-1 Radiological Environmental Monitoring Program ............................................

11.6-2 Page 9 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS LIST OF FIGURES CY-LA-170-301 Revision 6 ODCM Parts I and II PART I -RADIOLOGICAL EFFLUENT CONTROLS PAGE None PART 11-0DCM Figure 1-1 Radiation Exposure Pathways to Humans ...............................................

11.1-9 Figure 1-2 Unrestricted Area Boundary ...................................................................

11.1-21 Figure 1-3 Restricted Area Boundary ......................................................................

11. 1-22 Figure 2-1 Simplified Gaseous Radwaste and Gaseous Effluent Flow Diagram ..... 11.2-16 Figure 2-2 Simplified Liquid Radwaste Processing Diagram ...................................

11.2-18 '2-C\'5 Figure 2-3 Simplified Liquid Effluent Flow Diagram .................................................

11.2-19 Figure 2-4 Simplified Solid Radwaste Processing Diagram .....................................

11.2-20 Figure 6-1 Fixed Air Sampling Sites and Outer Ring Field Dosimeter

.......................

11.6-9 Figure 6-2 Inner Ring Field Dosimeter

.....................................................................

11.6-10 Figure 6-3 Ingestion and Waterborne Exposure Pathway Sample Locations

.........

11.6-11 Page 10 of 10 LaSalle ODCM Table of Contents Exelon LaSalle County Station 2601 North 21 51 Road Marseilles, IL 61341 815-415-2000 Telephone www.exeloncorp.com RA16-017 1 O CFR 50.36a April 29, 2016 U.S. Nuclear Regulatory Commission Attention:

Document Control Desk Washington, D.C. 20555

Subject:

LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374 2015 Annual Radioactive Effluent Release Report Enclosed is the Exelon Generation Company, LLC, 2015 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." Should you have any questions concerning this letter, please contact Mr. Guy V. Ford, Regulatory Assurance Manager, at (815) 415-2800.

Respectfully, William . Traft n Site Vice Presi ent LaSalle County Station

Enclosure:

LaSalle County Station 2015 Annual Radiological Effluent Release Report cc: Regional Administrator

-NRC Region Ill NRC Senior Resident Inspector

-LaSalle County Station LASALLE COUNTY NUCLEAR POWER STATION ANNUAL RADIOLOGICAL EFFLUENT RELEASE REPORT (ARERR) 2015 Page 1 of 76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SUPPLEMENT AL INFORMATION I. Regulatory Limits a. Gaseous Effluents I) 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 I 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

1) 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 1.5 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 I 0 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
1) 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 2of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SUPPLEMENT AL INFORMATION

b. Liquid Effluents l) The concentration of radioactive material released from the site shall be limited to ten (10) times the concentrations specified in 10 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 l) Not applicable

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

a. Gaseous Effluents l) 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. l) 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 17. l 0 Ci/Unit/year of C-14 (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 348.5 days (per Unit). b. Liquid Effluents

1) Batch waste release tanks are sampled each batch for principal gamma emitters, 1-131, dissolved and entrained noble gases, H-3, gross alpha, Sr-89, Sr-90 and Fe-55. Page 3of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SUPPLEMENTAL 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, I-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 1) 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. NIA 5) Minimum time period for a batch release: Min. NI A 6) Average stream flow during periods of release of effluent into a flowing stream: gpm NI A 6. Abnormal Releases a. Gaseous I) Number of releases:

None 2) Total activity released:

NIA b. Liquid I) Number of releases:

None 2) Total activity released:

NIA 7. Process Control Program Revision 11 of the Process Control Procedure (RW-AA-100) was implemented on June 17, 2015. The revision incorporated the following changes:

  • In the Terms and Definitions section, the definitions were arranged in alphabetical order, and the definitions for Blending and Concentration Averaging were revised. Page 4of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SUPPLEMENT AL INFORMATION
  • In the Terms and Definitions section, the terms for Classification Controlling Nuclides, Homogenous Waste, Mixable Waste, and Nuclides of Concern were added.
  • The order of the references section was updated.
  • Reference documents were added including:

the applicable sections of the Updated Final Safety Analysis Reports (UFSAR) from various nuclear sites across the Exelon Fleet; the NRC Concentration Averaging and Encapsulation Branch Technical Position, NRC-2011-0022; and Exelon Procedure RM-AA-I 0 I, Records Management Program. There were no changes to the Process Control Program 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. 8. Effluent Monitoring Instrumentation time clocks and sample anomalies.

a. Time clocks: There were no effluent monitoring time clocks exceeded in 2015. b. Sample anomalies:

There were no sampling anomalies affecting the measurement of effluents experienced during 2015. 9. Offsite Dose Calculation Manual (ODCM) Revisions.

There was one revision made to the ODCM in 2015. Revision 6 implemented various editorial and grammatical changes including the addition of the definition for "POSITION INDICATION VERIFICATION" related to the Blowdown Flow Control Valve position indication and the re-insertion of historical Table 4-6. Due to typographical error, the cover page of ODCM Revision 6 incorrectly indicates that Revision 6 was implemented on November 26, 2014. The implementation date for Revision 6 was January 6, 2015. Each change had a determination performed, in accordance with ODCM revision procedures, to ensure the change would 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.

The determinations indicated no adverse impacts. A copy of the ODCM Change Summary Matrix for revision 6 has been included as Appendix A to this report. Also, a copy of revision 6 to the ODCM has been included as Appendix B to this report. All changes in revision 6 to the LaSalle Station ODCM became effective January 6, 2015. I 0. Independent Spent Fuel Storage Installation (ISFSI). During the period April I, 2015 through April I, 2016, no radioactive effluents were released from the LaSalle Nuclear Station Independent Spent Fuel Storage Installation.

Also during this period, 8 casks were transfe1Ted to the outdoor concrete ISFSI storage pad. Page 5 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) UNIT l 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 2.78E+02 5.72E+02 1.42E+03 2. Average release rate for the period µCi/sec 3.58E+01 7.28E+01 1.79E+02 3. Percent of ODCM limit % * *

  • B. Iodine 1. Total Iodine -131 Ci 2.74E-02 7.30E-03 1.15E-02 2. Average release rate for the period µCi/sec 3.52E-03 9.28E-04 1.44E-03 3. Percent of ODCM limit % * * . C. Particulates
1. Particulates with half-lives

> 8 days Ci 4.27E-03 5.50E-03 5.47E-03 2. Average release rate for the period µCi/sec 5.49E-04 6.99E-04 6.88E-04 3. Percent of ODCM limit % * * . D. Tritium 1. Total Release Ci 5.45E+OO 5.05E+OO 7.11 E+OO 2. Average release rate for the period µCi/sec 7.01 E-01 6.43E-01 8.95E-01 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 8.55E+OO 8.55E+OO 8.55E+OO 2. Average release rate for the period µCi/sec 1.10E+OO 1.09E+OO 1.07E+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% 7.16E+02 2.50E+01 9.01 E+01 . 5.45E-03 1.50E+01 I 6.86E-04
  • 2.26E-03 3.50E+01 I 2.84E-04
  • 5.95E+OO 1.50E+01 I 7.49E-01 * <LLD N/A I <LLD
  • 8.55E+OO 1.07E+OO
  • Nuclides Released A. Fission gases Kr-85m Kr-87 Kr-88 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 Zr-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 Alpha Gross Alpha Total for Period F. Carbon-14 C-14 Total for Period LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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 9.40E+01 1.52E+02 1.74E+02 2.10E+02 NIA NIA NIA Ci <LLD 3.31E+01 <LLD 7.75E+OO NIA NIA NIA Ci 1.00E+02 2.20E+02 2.25E+02 2.73E+02 NIA NIA NIA Ci <LLD <LLD 1.19E+01 <LLD NIA NIA NIA Ci 7.09E+01 1.62E+02 8.64E+02 2.22E+02 NIA NIA NIA Ci 7.33E+OO 4.76E+OO 1.13E+02 2.69E-04 NIA NIA NIA Ci 6.04E+OO <LLD 6.12E+OO 3.25E+OO NIA NIA NIA Ci <LLD <LLD 3.04E+01 <LLD NIA NIA NIA Ci 6.88E-03 6.38E-03 5.69E-03 <LLD NIA NIA NIA Ci 2.78E+02 5.72E+02 1.42E+03 7.16E+02 NIA NIA NIA Ci 2.74E-02 7.30E-03 1.15E-02 5.45E-03 NIA NIA NIA Ci 3.22E-02 1.25E-02 1.22E-02 7.35E-03 NIA NIA NIA Ci 4.86E-02 2.06E-02 2.90E-02 1.60E-02 NIA NIA NIA Ci 1.15E-02 3.03E-03 <LLD <LLD NIA NIA NIA Ci 5.00E-02 2.61E-02 2.87E-02 1.29E-02 NIA NIA NIA Ci 1.70E-01 6.94E-02 8.13E-02 4.17E-02 NIA NIA NIA Ci 1.26E-01 5.39E-02 6.92E-02 3.44E-02 NIA NIA NIA Ci 6.67E-06 <LLD 5.19E-05 <LLD NIA NIA NIA Ci <LLD <LLD

<LLD <LLD NIA NIA NIA Ci 3.52E-04 3.06E-04 2.98E-04 3.09E-05 NIA NIA NIA Ci <LLD <LLD <LLD

<LLD NIA NIA NIA Ci 7.14E-04 9.24E-04 9.46E-04 2.62E-04 NIA NIA NIA Ci 2.45E-04 3.06E-04 2.93E-04 2.45E-05 NIA NIA NIA Ci 1.98E-04 3.00E-04 2.42E-04 1.96E-04 NIA NIA NIA Ci <LLD <LLD

<LLD <LLD NIA NIA NIA Ci 1.10E-5 <LLD <LLD <LLD NIA NIA NIA Ci 3.02E-04 4.82E-04 5.51E-04 1.63E-04 NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci 9.03E-04 1.09E-03 1.13E-03 4.03E-04 NIA NIA NIA Ci 1.54E-03 2.09E-03 1.96E-03 1.18E-03 NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci 4.27E-03 5.50E-03 5.47E-03 2.26E-03 NIA NIA NIA Ci 5.45E+OO 5.05E+OO 7.11E+OO 5.95E+OO NIA NIA NIA Ci <LLD <LLD <LLD <LLD NIA NIA NIA Ci 8.55E+OO 8.55E+OO 8.55E+OO 8.55E+OO NIA NIA NIA Page 7of76 Quarter 4 NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA NIA LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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 O.OOE+OO O.OOE+OO O.OOE+OO 0.00E+OO F. Volume of Dilution Water Used During Period Liters O.OOE+OO O.OOE+OO O.OOE+OO 0.00E+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 8 of76 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 (2015) LIQUID RELEASES UNIT I AND UNIT 2 Continuous Mode Batch Mode Quarter 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 9 of76 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 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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, 5.01E+OO 9.01 E-01 1015 etc. b. Drv compressible waste, contaminated equip, etc. 9.19E+02 1.33E+OO 1015 c. Irradiated components, control rods, etc. None None 1015 d. Other (Oil, EHC fluid, sump waste, etc.) 1.42E+01 2.02E-03 1015 2. Estimate of major nuclide composition (by waste type) Percent Abundance Major Nuclide Composition (2::1%) a. Spent resins, filter sludges, evaporator bottoms, etc. Mn-54 3.91% Fe-55 12.47% Co-58 1.54% Co-60 72.24% Zn-65 1.48% Cs-137 4.23% b. Dry compressible waste, contaminated equip, etc. H-3 2.98% Mn-54 1.15% Fe-55 22.32% Co-60 70.61% Zn-65 1.13% c. Irradiated components, control rods, etc. None N/A d. Other (Oil, EHC fluid, sump waste etc.) H-3 1.58% Fe-55 14.61% Co-60 78.21% Zn-65 2.18% Page 10of76 Est. Total Error(%) +/-25% +/-25% N/A +/-25% Shipment Type(s) LSA LSA N/A LSA LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS FIRST QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 14 Hittman Transport Energy Solutions

-Bear Creek Facility, Oak Ridae, TN 1 Hittman Transport Energy Solutions, Clive Facility, Tooele County, UT 2 Interstate Ventures Energy Solutions

-Bear Creek Facilitv, 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 11of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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 Tvpes of Waste (m3) Activity (Ci) Period a. Spent resins, filter sludges, evaporator bottoms, 2.51 E+01 5.11 E+OO 2015 etc. b. Drv compressible waste, contaminated equip, etc. 1.51 E+02 3.74E+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

a. Spent resins, filter sludges, evaporator bottoms, etc. Mn-54 2.80% Fe-55 14.50% Co-60 67.72% Zn-65 1.20% Cs-137 9.44% b. Dry compressible waste, contaminated equip, etc. Fe-55 16.86% Co-60 78.40% Zn-65 1.56% c. Irradiated components, control rods, etc. None None d. Other (Oil, EHC fluid, sump waste etc.) None None 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 (2015) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS SECOND QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 1 Cast Transportation Energy Solutions

-Bear Creek Facility, Oak Ridge, TN 5 Hittman Transport Energy Solutions

-Bear Creek Facility, Oak RidQe, TN 4 Hittman Transport Energy Solutions, Clive Facility, Tooele County, UT 1 Interstate Ventures Energy Solutions, Clive Facility, Tooele County, UT 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 Revision 11 of the Process Control Procedure (RW-AA-100) was implemented on June 17, 2015. The revision incorporated the following changes:

  • In the Terms and Definitions section, the definitions were arranged in alphabetical order, and the definitions for Blending and Concentration Averaging were revised.
  • In the Terms and Definitions section, the terms for Classification Controlling Nuclides, Homogenous Waste, Mixable Waste, and Nuclides of Concern were added.
  • The order of the references section was updated.
  • Reference documents were added including:

the applicable sections of the Updated Final Safety Analysis Reports (UFSAR) from various nuclear sites across the Exelon Fleet; the NRC Concentration Averaging and Encapsulation Branch Technical Position, NRC-2011-0022; and Exelon Procedure RM-AA-101, Records Management Program. There were no changes to the Process Control Program processing systems or components 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 ST ATJON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) 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 (m3) Activity (Ci) Period a. Spent resins, filter sludges, evaporator bottoms, 2.79E+01 2.30E+01 3015 etc. b. Dry compressible waste, contaminated equip, etc. 6.95E+01 1.01 E+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. Mn-54 2.09% Fe-55 18.64% Co-60 63.47% Ni-63 1.04% Cs-137 11.14% b. Dry compressible waste, contaminated equip, etc. Mn-54 1.14% Fe-55 22.71% Co-60 71.82% Zn-65 1.73% c. Irradiated components, control rods, etc. None None d. Other (Oil, EHC fluid, sump waste, etc.) None None 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 (2015) SOLID WASTE AND IRRADIATED FUEL SHIPMENTS THIRD QUARTER 3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 4 Hittman Transport Energy Solutions

-Bear Creek Facility, Oak RidQe, TN 6 Hittman Transport Energy Solutions, Clive Facility, Tooele Countv, UT 8. 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 (2015) 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, 2.72E+01 2.38E+01 4015 etc. b. Drv compressible waste, contaminated equip, etc. 1.33E+02 1.29E+01 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 Maior Nuclide Composition

a. Spent resins, filter sludges, evaporator bottoms, etc. C-14 8.85% Mn-54 1.67% Fe-55 15.24% Co-60 68.10% Ni-63 1.06% Cs-137 3.08% 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 None d. Other (Oil, EHC fluid, sump waste, etc.) None None Page 16of76 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 (2015) 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 RidQe, TN 7 Hittman Transport Energy Solutions, Clive Facility, Tooele County, UT 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 STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) RADIOLOGICAL IMPACT ON MAN MAXIMUM DOSES RES UL TING FROM GASEOUS RELEASES AND COMPLIANCE ST ATVS Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of Infant Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 3.SlE-03 0.07 7.90E-03 0.16 8.89E-03 0.18 9.41E-03 0.19 1.00E+01 0.30 Beta Air 1.00E+01 mRad 1.54E-04 0.002 3.94E-04 0.004 6.31E-04 0.006 4.lOE-04 0.004 2.00E+01 0.01 NG Total Body 2.50E+OO mRem 2.34E-03 0.09 5.27E-03 0.21 5.93E-03 0.24 6.28E-03 0.25 5.00E+OO 0.40 NG Skin 7.50E+OO mRem 3.94E-03 0.05 8.91E-03 0.12 1.00E-02 0.13 1.0GE-02 0.14 1.50E+01 0.22 NNG Organ 7.50E+OO mRem 1.33E-01 1.77 3.69E-02 0.49 5.69E-02 0.76 2.79E-02 0.37 1.50E+01 1.70 Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of Child Receptor Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 3.SlE-03 0.07 7.90E-03 0.16 8.89E-03 0.18 9.41E-03 0.19 1.00E+01 0.30 Beta Air 1.00E+01 mRad 1.54E-04 0.002 3.94E-04 0.004 6.31E-04 0.006 4.lOE-04 0.004 2.00E+01 0.01 NG Total Body 2.50E+OO mRem 2.34E-03 0.09 5.27E-03 0.21 5.93E-03 0.24 6.28E-03 0.25 5.00E+OO 0.40 NG Skin 7.50E+OO mRem 3.94E-03 0.05 8.91E-03 0.12 1.00E-02 0.13 1.06E-02 0.14 1.50E+01 0.22 NNG Organ 7.50E+OO mRem 5.49E-02 0.73 1.54E-02 0.21 2.37E-02 0.31 1.16E-02 0.15 1.50E+01 0.70 Teenager Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 3.SlE-03 0.07 7.90E-03 0.16 8.89E-03 0.18 9.41E-03 0.19 1.00E+01 0.30 Beta Air 1.00E+01 mRad 1.54E-04 0.002 3.94E-04 0.004 6.31E-04 0.006 4.lOE-04 0.004 2.00E+01 0.01 NG Total Body 2.50E+OO mRem 2.34E-03 0.09 5.27E-03 0.21 S.93E-03 0.24 6.28E-03 0.25 5.00E+OO 0.40 NG Skin 7.50E+OO mRem 3.94E-03 0.05 8.91E-03 0.12 1.00E-02 0.13 1.0GE-02 0.14 1.50E+01 0.22 NNG Organ 7.50E+OO mRem 2.78E-02 0.37 7.75E-03 0.10 1.19E-02 0.16 5.83E-03 0.08 1.50E+01 0.36 Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of Adult Receptor Limit Quarter Limit Quarter Limit Quarter Limit Quarter Limit Limit Limit Gamma Air 5.00E+OO mRad 3.SlE-03 0.07 7.90E-03 0.16 8.89E-03 0.18 9.41E-03 0.19 1.00E+01 0.30 Beta Air 1.00E+01 mRad 1.54E-04 0.002 3.94E-04 0.004 6.31E-04 0.006 4.lOE-04 0.004 2.00E+01 0.01 NG Total Body 2.50E+OO mRem 2.34E-03 0.09 5.27E-03 0.21 S.93E-03 0.24 6.28E-03 0.25 5.00E+OO 0.40 NG Skin 7.50E+OO mRem 3.94E-03 0.05 8.91E-03 0.12 1.00E-02 0.13 1.06E-02 0.14 1.50E+01 0.22 NNG Organ 7.50E+OO mRem 1.76E-02 0.23 4.91E-03 0.07 7.56E-03 0.10 3.67E-03 0.05 1.50E+01 0.22 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 specific assumptions of source term. Page 18of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) RADIOLOGICAL IMPACT ON MAN MAXIMUM DOSES RESULTING FROM LIQUID RELEASES AND COMPLIANCE STATUS Infant Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of 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 Child Quarterly Units 1st %of 2nd %of 3 rd %of 4th %of Annual %of 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 %of 2nd %of 3 rd %of 4th %of Annual %of 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 %of 2nd %of 3 rd %of 4th %of Annual %of 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 Page 19 of 76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) RADIOLOGICAL IMPACT ON MAN MAXIMUM DOSES RESULTING FROM RELEASES AND COMPLIANCE STATUS 1 OCFR20 / 40CFR190 Compliance 1 st 2 n d 3 rd 4t h % Quarter Quarter Quarter Quarter Annual Annual Annual Unit 1 U1 DEX U1 DTot Bone Liver Thyroid Kidney Lung Gl-LLI Unit2 Dose Dose (mRem) (mRem) I 9.92E-02 I 1.02E-01 I 2.32E-01 I 1.39E-01 7.33E-03 7.10E-03 1.97E-03 1.70E-03 1.33E-01 3.69E-02 2.03E-03 1.71 E-03 1.55E-03 1.57E-03 1.58E-03 1.59E-03 Dose Dose (mRem) (mRem) 1.02E-01 1.05E-01 1.59E-01 I 1.33E-01 7.16E-03 7.00E-03 1.77E-03 1.58E-03 5.70E-02 2.79E-02 1.78E-03 1.60E-03 1.57E-03 1.50E-03 1.60E-03 1.51 E-03 U2 DEX I 5.29E-02 I 9.46E-02 I 8.66E-02 I 9.89E-02 I U2 DTot I 5.29E-02 I 9.46E-02 I 8.66E-02 I 9.89E-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 Dose (mRem) I 4.09E-01 I 6.63E-01 2.86E-02 7.03E-03 2.55E-01 7.12E-03 6.19E-03 6.28E-03 I 3.33E-01 I 3.33E-01 O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Limit (mRem/yr) 40CFR190 Compliance 25 1 OCFR20 Compliance 100 40CFR190 Compliance 25 25 75 25 25 25 40CFR190 Compliance 25 1 OCFR20 Compliance 100 40CFR190 Compliance 25 25 75 25 25 25 Limit 1.63 0.66 0.11 0.03 0.34 0.03 0.02 0.03 1.33 0.33 0.00 0.00 0.00 0.00 0.00 0.00 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 26 5 12 0 0 43 NNE 1 4 3 10 2 0 20 NE 0 1 2 6 0 0 9 ENE 0 1 3 5 0 0 9 E 2 6 4 1 0 0 13 ESE 1 7 8 0 0 0 16 SE 2 1 0 1 0 0 4 SSE 0 4 1 0 2 0 7 s 0 4 3 1 0 0 8 SSW 0 1 1 0 0 0 2 SW 0 2 5 1 1 0 9 WSW 1 4 1 3 1 0 10 w 0 0 4 5 0 0 9 WNW 1 3 9 6 0 0 19 NW 0 5 1 2 0 0 8 NNW 1 9 6 1 3 0 20 Variable 0 0 0 0 0 0 0 Total 9 78 56 54 9 0 206 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 21 of 76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: January -March 2015 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 2 5 0 0 8 NNE 0 0 2 0 0 0 2 NE 0 0 0 3 0 0 3 ENE 0 0 0 1 0 0 1 E 0 1 0 1 1 0 3 ESE 1 0 0 0 1 0 2 SE 0 0 0 2 0 0 2 SSE 0 0 0 0 0 0 0 s 0 1 1 0 0 0 2 SSW 1 1 0 0 0 0 2 SW 0 0 0 0 0 0 0 WSW 0 0 2 3 0 0 5 w 2 0 1 0 0 0 3 WNW 0 1 0 0 2 0 3 NW 0 0 1 2 0 0 3 NNW 0 0 2 1 1 0 4 Variable 0 0 0 0 0 0 0 Total 4 5 11 1 8 5 0 4 3 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 22of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 2 7 4 0 0 13 NNE 0 2 7 3 0 0 12 NE 0 0 3 0 0 0 3 ENE 0 0 1 6 0 0 7 E 0 0 0 3 1 0 4 ESE 0 0 1 5 1 0 7 SE 0 1 0 2 0 0 3 SSE 0 0 2 0 0 0 2 s 0 1 0 0 0 0 1 SSW 0 0 3 0 0 0 3 SW 0 2 1 2 0 0 5 WSW 1 2 0 1 3 0 7 w 0 3 5 4 0 0 12 WNW 0 1 2 1 0 0 4 NW 0 0 3 5 1 0 9 NNW 0 0 3 5 2 0 10 Variable 0 0 0 0 0 0 0 Total 1 14 3 8 41 8 0 102 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 23of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 12 34 16 0 0 63 NNE 0 4 8 3 0 0 15 NE 0 1 3 1 0 0 5 ENE 0 5 7 19 2 0 33 E 1 9 14 15 4 0 43 ESE 2 10 18 6 2 0 38 SE 1 18 3 5 4 0 31 SSE 2 7 4 6 0 0 19 s 2 12 6 4 5 0 29 SSW 2 12 13 9 4 0 40 SW 4 11 20 19 4 0 58 WSW 2 15 25 10 3 1 56 w 0 12 17 17 4 0 50 WNW 2 14 29 39 15 0 99 NW 0 5 12 36 3 1 57 NNW 0 5 26 35 10 5 81 Variable 0 1 0 0 0 0 1 Total 19 153 239 240 60 7 718 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 24of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 10 14 2 0 0 28 NNE 3 8 0 1 0 0 12 NE 0 1 1 1 0 0 3 ENE 2 4 9 3 0 0 18 E 1 6 14 2 0 0 23 ESE 1 16 14 0 0 0 31 SE 3 16 5 1 0 0 25 SSE 3 9 3 1 11 0 27 s 1 8 11 12 5 0 37 SSW 1 9 19 8 1 0 38 SW 0 7 32 33 4 2 78 WSW 0 7 15 38 2 1 63 w 1 5 20 13 1 1 41 WNW 2 11 13 28 21 3 78 NW 3 7 35 4 0 0 49 NNW 0 10 29 21 3 2 65 Variable 0 0 0 0 0 0 0 Total 23 134 234 168 48 9 616 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: 4 Page 25of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: January -March 2015 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 1 0 0 0 0 1 NNE 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 ENE 1 1 0 0 0 0 2 E 1 3 5 0 0 0 9 ESE 0 13 5 0 0 0 18 SE 1 11 3 0 0 0 15 SSE 6 11 6 1 0 0 24 s 2 7 4 5 0 0 18 SSW 3 14 17 11 0 0 45 SW 3 7 8 12 0 0 30 WSW 1 7 16 16 0 0 40 w 2 14 30 8 0 0 54 WNW 0 5 11 4 7 0 27 NW 2 3 4 0 0 0 9 NNW 1 3 1 0 0 0 5 Variable 0 0 0 0 0 0 0 Total 23 100 110 57 7 0 297 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 26of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 6 5 0 0 0 11 ESE 0 8 1 0 0 0 9 SE 0 8 2 0 0 0 10 SSE 1 3 3 0 0 0 7 s 0 9 13 0 0 0 22 SSW 0 8 21 5 0 0 34 SW 1 5 4 8 0 0 18 WSW 1 6 2 13 0 0 22 w 0 6 8 0 0 0 14 WNW 0 12 13 0 0 0 25 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 4 71 72 26 0 0 173 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 27of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 3 0 2 0 0 5 NNE 0 1 0 4 0 4 9 NE 0 0 0 1 1 0 2 ENE 0 0 0 1 1 0 2 E 0 0 0 1 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 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 0 9 2 4 19 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 28 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 2 4 6 0 12 NNE 0 1 1 0 2 3 7 NE 0 0 0 0 0 3 3 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 2 2 0 4 SE 0 0 0 2 0 0 2 SSE 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 SW 0 0 0 1 0 0 1 WSW 0 0 0 0 2 0 2 w 0 0 0 2 2 0 4 WNW 0 0 0 0 1 1 2 NW 0 0 1 0 3 0 4 NNW 0 0 1 1 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 1 5 12 18 7 43 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 4 Hours of missing stability measurements in all stability classes: 4 Page 29of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 1 1 2 4 2 10 NNE 0 2 1 0 0 1 4 NE 0 0 0 0 1 0 1 ENE 0 0 0 1 3 2 6 E 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 SE 0 0 2 0 0 0 2 SSE 0 0 0 0 0 1 1 s 0 0 3 0 0 0 3 SSW 0 0 0 1 0 0 1 SW 0 0 0 1 0 0 1 WSW 0 1 1 0 0 0 2 w 0 0 1 1 0 0 2 WNW 0 0 1 2 1 1 5 NW 0 0 3 1 2 2 8 NNW 0 0 2 1 0 0 3 Variable 0 0 0 0 0 0 0 Total 0 4 15 10 11 9 49 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 2 Hours of missing stability measurements in all stability classes: 4 Page 30 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 7 19 46 22 2 96 NNE 0 7 19 13 9 2 50 NE 0 6 7 8 2 0 23 ENE 0 5 13 8 28 2 56 E 1 3 15 8 14 7 48 ESE 0 6 12 13 8 3 42 SE 1 10 8 11 4 5 39 SSE 1 7 10 1 11 8 38 s 2 12 10 7 12 10 53 SSW 1 10 12 9 11 7 50 SW 0 5 15 28 12 5 65 WSW 1 13 18 24 17 8 81 w 0 13 11 12 16 12 64 WNW 1 8 17 18 25 41 110 NW 0 7 9 38 56 32 142 NNW 0 2 13 35 20 20 90 Variable 0 1 0 0 0 0 1 Total 8 122 208 279 267 164 1048 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 33 Hours of missing stability measurements in all stability classes: 4 Page 31of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: January -March 2015 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 3 1 2 11 9 2 28 NNE 2 5 7 4 4 0 22 NE 0 5 7 4 0 0 16 ENE 1 2 8 2 2 0 15 E 0 4 4 6 6 0 20 ESE 1 3 11 4 2 0 21 SE 1 6 9 12 5 0 33 SSE 0 1 7 2 2 0 12 s 0 3 7 9 4 8 31 SSW 1 5 10 16 6 8 46 SW 1 7 8 22 37 28 103 WSW 0 0 5 10 22 24 61 w 1 4 5 12 29 15 66 WNW 4 3 9 8 15 28 67 NW 1 5 8 12 16 4 46 NNW 0 0 5 15 17 2 39 Variable 0 0 0 0 0 0 0 Total 16 54 112 149 176 119 626 Hours of calm in this stability class: 2 Hours of missing wind measurements in this stability class: 1 Hours of missing stability measurements in all stability classes: 4 Page 32of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 2 2 0 0 5 NNE 1 1 0 0 0 0 2 NE 0 1 0 1 0 0 2 ENE 2 2 0 1 1 0 6 E 2 1 0 3 0 0 6 ESE 0 4 1 2 2 2 11 SE 2 4 3 8 8 0 25 SSE 0 1 1 6 2 3 13 s 1 0 2 4 4 4 15 SSW 1 1 4 4 8 18 36 SW 0 1 9 11 11 14 46 WSW 0 3 3 4 4 13 27 w 0 1 1 2 2 12 18 WNW 0 0 1 9 24 2 36 NW 0 2 7 8 6 0 23 NNW 0 1 0 7 5 0 13 Variable 0 0 0 0 0 0 0 Total 9 24 34 72 77 68 284 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: 4 Page 33of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: January -March 2015 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 2 0 5 1 0 8 NNE 0 1 3 0 0 0 4 NE 0 1 0 0 0 0 1 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 0 1 4 0 5 SE 0 0 0 3 1 0 4 SSE 0 0 1 4 1 0 6 s 0 0 0 1 0 0 1 SSW 0 0 0 2 0 0 2 SW 0 1 0 0 1 1 3 WSW 0 2 0 0 4 1 7 w 0 0 0 0 0 2 2 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 1 7 4 1 6 12 4 44 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 4 Page 34of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 10 0 0 0 10 NNE 0 2 4 0 0 0 6 NE 0 0 11 6 0 0 17 ENE 0 0 2 6 0 0 8 E 0 0 0 0 3 0 3 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 1 0 1 SSE 0 0 0 0 0 2 2 s 0 0 7 10 4 2 23 SSW 0 0 6 14 1 0 21 SW 0 0 4 8 3 0 15 WSW 0 0 1 4 4 1 10 w 0 0 3 10 1 0 14 WNW 0 0 0 11 0 0 11 NW 0 1 0 3 0 0 4 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 3 48 72 17 5 145 Hours 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: 7 Page 35of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 4 0 0 0 5 NNE 0 3 8 1 0 0 12 NE 0 3 3 1 0 0 7 ENE 0 0 15 7 0 0 22 E 0 0 2 1 3 0 6 ESE 0 0 0 0 0 0 0 SE 0 0 2 4 2 0 8 SSE 0 0 3 0 0 0 3 s 0 1 6 2 0 0 9 SSW 0 0 6 2 2 0 10 SW 0 3 9 4 0 0 16 WSW 0 0 10 4 1 0 15 w 0 3 5 4 2 0 14 WNW 0 3 3 6 1 0 13 NW 0 1 4 7 0 0 12 NNW 0 1 3 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 19 83 43 11 0 156 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 7 Page 36 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 5 5 0 0 0 10 NNE 0 0 9 1 0 0 10 NE 0 5 13 5 0 0 23 ENE 0 5 8 6 1 1 21 E 0 4 1 2 1 0 8 ESE 0 3 1 3 1 0 8 SE 0 1 1 3 2 0 7 SSE 0 3 6 1 0 0 10 s 0 0 5 3 1 0 9 SSW 0 2 5 3 0 0 10 SW 0 10 8 7 2 0 27 WSW 0 9 8 10 2 3 32 w 0 3 8 4 0 1 16 WNW 0 2 8 3 1 1 15 NW 0 2 6 8 0 0 16 NNW 0 5 3 3 0 0 11 Variable 0 0 0 0 0 0 0 Total 0 59 95 62 11 6 233 Hours 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: 7 Page 37 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 25 9 0 0 0 36 NNE 1 22 33 8 0 0 64 NE 0 11 70 18 0 0 99 ENE 0 13 53 25 8 0 99 E 1 7 25 9 0 0 42 ESE 0 3 17 4 1 0 25 SE 0 5 10 3 1 0 19 SSE 2 5 9 13 2 0 31 s 1 8 15 7 2 0 33 SSW 2 4 14 13 3 0 36 SW 1 8 22 13 3 0 47 WSW 3 19 22 13 1 3 61 w 1 9 13 11 8 4 46 WNW 1 5 21 8 8 2 45 NW 4 2 15 9 3 0 33 NNW 1 10 14 14 2 0 41 Variable 1 1 0 0 0 0 2 Total 21 157 362 168 42 9 759 Hours 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: 7 Page 38of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 4 21 5 0 0 0 30 NNE 0 14 2 0 0 0 16 NE 5 3 6 0 0 0 14 ENE 0 4 13 9 0 0 26 E 0 19 48 8 1 0 76 ESE 0 3 12 0 0 0 15 SE 2 5 10 3 0 0 20 SSE 1 8 10 7 0 0 26 s 2 8 23 11 5 0 49 SSW 2 11 22 10 0 0 45 SW 0 13 23 22 1 0 59 WSW 2 7 14 7 0 0 30 w 0 8 6 6 12 15 47 WNW 0 8 3 6 5 5 27 NW 2 10 9 1 0 0 22 NNW 2 6 6 2 0 0 16 Variable 0 0 1 0 0 0 1 Total 22 148 213 92 24 20 519 Hours 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: 7 Page 39of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 0 0 0 0 0 0 0 NE 0 1 0 0 0 0 1 ENE 0 1 0 0 0 0 1 E 0 2 9 1 0 0 12 ESE 2 9 1 0 0 0 12 SE 1 9 6 0 0 0 16 SSE 0 8 4 6 0 0 18 s 0 13 5 8 0 0 26 SSW 0 8 14 0 0 0 22 SW 0 7 9 11 0 0 27 WSW 0 5 12 3 0 0 20 w 0 13 5 0 0 0 18 WNW 2 7 0 0 0 0 9 NW 6 6 0 0 0 0 12 NNW 0 9 2 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 11 108 67 29 0 0 215 Hours 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: 7 Page 40of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 0 0 0 0 0 0 ESE 0 3 1 0 0 0 4 SE 0 7 3 0 0 0 10 SSE 0 14 3 0 0 0 17 s 1 12 18 1 0 0 32 SSW 0 9 9 5 0 0 23 SW 0 9 6 0 0 0 15 WSW 0 11 12 0 0 0 23 w 0 10 5 0 0 0 15 WNW 0 1 1 0 0 0 2 NW 0 6 2 0 0 0 8 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 1 83 6 0 6 0 0 150 Hours 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: 7 Page 41of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 1 1 1 3 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 1 1 1 3 Hours 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: 7 Page 42of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 5 0 0 5 NNE 0 0 1 2 0 0 3 NE 0 0 0 4 0 0 4 ENE 0 0 0 1 1 0 2 E 0 0 0 0 0 1 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 3 3 1 7 SSW 0 0 0 1 5 1 7 SW 0 0 0 0 4 1 5 WSW 0 0 0 0 2 3 5 w 0 0 0 1 2 1 4 WNW 0 0 0 1 5 0 6 NW 0 0 0 4 1 0 5 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 0 1 22 23 8 5 4 Hours 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: 7 Page 43of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 1 6 0 0 7 NNE 0 0 2 6 2 0 10 NE 0 1 3 6 3 0 13 ENE 0 0 10 3 4 0 17 E 0 0 1 0 0 1 2 ESE 0 0 0 0 0 0 0 SE 0 0 0 2 4 0 6 SSE 0 0 0 0 0 1 1 s 0 0 4 5 2 4 15 SSW 0 0 6 5 2 3 16 SW 0 0 3 3 5 2 13 WSW 0 0 0 4 2 0 6 w 0 0 0 5 3 1 9 WNW 0 0 0 2 4 2 B NW 0 2 0 1 7 1 11 NNW 0 1 1 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 4 31 48 38 15 136 Hours 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: 7 Page 44of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 7 13 13 1 0 36 NNE 0 8 15 31 12 5 71 NE 0 15 21 75 28 5 144 ENE 1 12 44 50 22 10 139 E 2 5 13 16 9 6 51 ESE 0 2 11 7 10 1 31 SE 0 1 8 10 8 0 27 SSE 1 1 18 9 13 5 47 s 0 1 9 16 8 8 42 SSW 1 2 14 16 23 12 68 SW 0 7 20 28 15 13 83 WSW 1 12 17 37 15 8 90 w 2 8 23 11 10 32 86 WNW 2 6 13 16 6 21 64 NW 3 5 13 32 20 13 86 NNW 1 7 11 16 4 0 39 Variable 1 1 0 0 0 0 2 Total 17 100 263 383 204 139 1106 Hours 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: 7 Page 45of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 2 2 4 12 0 0 20 NNE 2 6 5 18 2 0 33 NE 2 3 10 7 2 0 24 ENE 1 6 8 10 6 3 34 E 1 1 9 22 18 8 59 ESE 0 2 13 14 11 3 43 SE 0 2 7 6 10 0 25 SSE 0 1 6 11 6 5 29 s 0 1 8 13 17 25 64 SSW 0 4 5 15 16 19 59 SW 0 5 10 25 19 30 89 WSW 0 2 5 11 14 9 41 w 2 3 4 6 8 16 39 WNW 0 1 7 7 3 14 32 NW 1 1 8 12 5 0 27 NNW 0 0 8 5 4 4 21 Variable 0 0 0 1 0 0 1 Total 11 40 117 195 141 136 640 Hours 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: 7 Page 46of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 0 1 3 3 1 8 NNE 1 4 0 1 0 0 6 NE 0 1 3 2 0 0 6 ENE 1 0 3 0 0 0 4 E 0 0 2 0 1 2 5 ESE 1 0 0 1 0 0 2 SE 0 2 2 4 1 0 9 SSE 0 5 3 5 4 0 17 s 0 1 2 13 3 8 27 SSW 0 1 4 7 11 11 34 SW 0 0 3 5 4 1 13 WSW 0 4 7 9 1 1 22 w 0 0 4 8 1 2 15 WNW 1 0 6 4 5 0 16 NW 0 0 2 4 1 1 8 NNW 0 0 1 3 2 0 6 Variable 0 0 0 0 0 0 0 Total 4 18 43 69 37 27 198 Hours of calm in this stability class: 1 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 7 Page 47of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: April -June 2015 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 0 0 0 0 SSE 0 0 1 1 0 0 2 s 0 0 1 1 14 1 17 SSW 0 0 1 1 8 1 11 SW 0 0 2 1 0 0 3 WSW 0 0 2 1 0 0 3 w 0 1 0 1 0 0 2 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 0 1 7 7 22 2 3 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: 7 Page 48of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 1 3 0 0 4 ENE 0 0 2 0 0 0 2 E 0 0 2 0 0 0 2 ESE 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 SSE 0 0 1 0 0 0 1 s 0 0 4 2 0 0 6 SSW 0 1 1 5 0 0 7 SW 0 0 9 4 0 0 13 WSW 0 0 8 3 0 0 11 w 0 0 5 2 0 0 7 WNW 0 0 8 5 0 0 13 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 41 24 0 0 66 Hours 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 (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 2 13 0 0 0 15 NNE 0 1 3 1 0 0 5 NE 0 1 6 2 0 0 9 ENE 0 0 2 0 0 0 2 E 0 2 3 0 0 0 5 ESE 0 3 4 0 0 0 7 SE 0 2 0 0 0 0 2 SSE 0 5 3 0 0 0 8 s 0 3 6 6 0 0 15 SSW 0 2 6 6 0 0 14 SW 0 5 9 0 0 0 14 WSW 0 1 14 6 1 0 22 w 0 3 11 7 1 0 22 WNW 0 3 8 7 0 0 18 NW 0 1 4 0 0 0 5 NNW 0 1 6 0 0 0 7 Variable 0 0 0 0 0 0 0 Total 0 35 9 8 35 2 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: 0 Page 50of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 9 4 0 0 0 13 NNE 0 3 5 0 0 0 8 NE 0 7 8 0 0 0 15 ENE 0 7 9 0 0 0 16 E 0 6 3 0 0 0 9 ESE 0 8 5 0 0 0 13 SE 0 6 1 0 0 0 7 SSE 0 6 3 2 0 0 11 s 0 6 4 2 0 0 12 SSW 0 1 5 3 0 0 9 SW 0 6 8 1 0 0 15 WSW 0 3 9 4 0 0 16 w 0 9 13 3 4 0 29 WNW 0 5 9 4 0 0 18 NW 0 0 2 2 0 0 4 NNW 0 2 7 7 0 0 16 Variable 0 1 0 0 0 0 1 Total 0 85 9 5 2 8 4 0 212 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 51 of 76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: July -September 2015 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 25 18 0 0 0 45 NNE 0 19 18 7 0 0 44 NE 0 18 23 5 1 0 47 ENE 0 10 14 5 0 0 29 E 2 20 17 1 0 0 40 ESE 0 22 3 0 0 0 25 SE 1 24 12 0 0 0 37 SSE 2 12 15 9 0 0 38 s 4 16 16 4 0 0 40 SSW 2 13 24 5 0 0 44 SW 0 19 12 7 0 0 38 WSW 2 10 22 6 0 0 40 w 2 12 9 4 2 0 29 WNW 1 10 15 6 1 0 33 NW 0 8 6 4 0 0 18 NNW 0 17 30 5 0 0 52 Variable 0 0 0 0 0 0 0 Total 18 255 254 68 4 0 599 Hours 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 (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 24 14 0 0 0 40 NNE 3 16 9 1 0 0 29 NE 1 8 12 1 0 0 22 ENE 0 7 18 1 0 0 26 E 1 32 23 1 0 0 57 ESE 1 11 3 0 0 0 15 SE 2 12 7 0 0 0 21 SSE 0 13 9 2 0 0 24 s 1 17 24 5 0 0 47 SSW 5 12 18 2 0 0 37 SW 3 9 9 5 0 0 26 WSW 4 17 25 4 0 0 50 w 0 11 8 0 1 0 20 WNW 5 9 8 0 1 0 23 NW 2 8 1 1 0 0 12 NNW 0 16 8 0 0 0 24 Variable 0 0 0 0 0 0 0 Total 30 222 196 23 2 0 473 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 Page 53of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 1 7 0 0 0 0 8 NNE 1 5 0 0 0 0 6 NE 1 1 0 0 0 0 2 ENE 0 1 1 0 0 0 2 E 3 26 14 0 0 0 43 ESE 3 11 0 0 0 0 14 SE 1 19 2 0 0 0 22 SSE 2 14 3 0 0 0 19 s 2 26 9 0 0 0 37 SSW 4 30 21 0 0 0 55 SW 6 19 26 0 0 0 51 WSW 0 15 16 4 0 0 35 w 3 13 18 0 0 0 34 WNW 6 18 2 0 0 0 26 NW 1 9 1 0 0 0 11 NNW 2 4 0 0 0 0 6 Variable 0 1 1 0 0 0 2 Total 36 219 114 4 0 0 373 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 Page 54of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: July -September 2015 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 1 0 0 0 0 0 1 ENE 0 1 0 0 0 0 1 E 0 6 2 0 0 0 8 ESE 2 34 1 0 0 0 37 SE 1 24 0 0 0 0 25 SSE 2 25 2 0 0 0 29 s 0 41 8 0 0 0 49 SSW 0 48 14 0 0 0 62 SW 2 24 7 0 0 0 33 WSW 1 13 3 0 0 0 17 w 1 19 6 0 0 0 26 WNW 2 21 0 0 0 0 23 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 12 257 43 0 0 0 3 1 2 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 Page 55of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 56 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: July -September 2015 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 1 0 0 0 0 1 s 0 0 1 0 1 0 2 SSW 0 0 0 0 1 0 1 SW 0 0 0 1 0 0 1 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 1 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 0 1 1 2 2 0 6 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 0 Page 57 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 5 0 0 9 NNE 0 0 0 1 0 0 1 NE 0 0 0 6 4 0 10 ENE 0 0 0 1 0 0 1 E 0 0 3 0 0 0 3 ESE 0 0 0 0 0 0 0 SE 0 1 0 0 0 0 1 SSE 0 0 1 0 0 0 1 s 0 0 3 2 3 0 8 SSW 0 0 2 0 7 1 10 SW 0 1 9 5 4 0 19 WSW 0 0 3 B 3 0 14 w 0 0 6 0 2 0 B WNW 0 0 4 9 2 0 15 NW 0 0 2 6 1 0 9 NNW 0 0 0 1 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 2 37 44 26 1 110 Hours 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 58of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 13 24 24 0 0 61 NNE 1 12 19 19 13 1 65 NE 0 10 27 31 11 4 83 ENE 0 12 21 14 5 0 52 E 0 16 18 8 0 0 42 ESE 0 11 17 5 0 0 33 SE 1 24 22 6 1 0 54 SSE 2 9 20 14 4 1 50 s 3 7 19 18 4 2 53 SSW 1 8 30 18 12 3 72 SW 1 10 28 16 4 4 63 WSW 0 8 19 27 13 1 68 w 1 10 26 19 8 8 72 WNW 1 9 23 13 9 2 57 NW 1 6 6 18 10 2 43 NNW 0 2 25 21 3 0 51 Variable 0 1 0 0 0 0 1 Total 12 168 344 271 97 28 920 Hours 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 STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 3 8 16 6 0 33 NNE 3 3 8 18 4 0 36 NE 1 3 7 8 4 1 24 ENE 0 5 8 24 11 0 48 E 0 3 13 34 7 1 58 ESE 1 1 15 17 0 0 34 SE 2 4 10 12 2 0 30 SSE 0 6 10 18 7 2 43 s 1 10 9 20 20 5 65 SSW 0 6 18 10 30 8 72 SW 0 3 11 10 15 6 45 WSW 1 2 15 16 24 0 58 w 1 6 9 15 7 0 38 WNW 1 3 2 12 5 1 24 NW 0 1 4 9 3 1 18 NNW 1 6 10 4 4 0 25 Variable 0 0 0 0 0 0 0 Total 12 65 157 243 149 25 651 Hours 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 60 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 3 1 1 1 0 7 NNE 0 1 2 0 0 0 3 NE 1 1 0 0 0 0 2 ENE 0 2 0 0 0 0 2 E 1 3 1 5 4 0 14 ESE 0 1 4 13 5 0 23 SE 1 4 3 20 3 0 31 SSE 1 5 8 10 4 0 28 s 1 5 15 15 8 4 48 SSW 1 7 18 22 22 6 76 SW 1 3 13 24 22 0 63 WSW 0 3 11 7 10 5 36 w 0 2 11 7 6 0 26 WNW 0 2 8 11 14 3 38 NW 0 6 7 10 4 0 27 NNW 0 4 2 4 1 0 11 Variable 0 1 1 0 0 0 2 Total 8 53 105 149 104 18 437 Hours 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 STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: July -September 2015 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 2 0 0 2 SE 0 0 1 9 0 0 10 SSE 0 0 1 11 0 0 12 s 0 0 0 11 2 1 14 SSW 0 0 2 9 5 3 19 SW 0 0 3 1 3 1 8 WSW 0 0 1 2 0 0 3 w 0 1 2 0 0 0 3 WNW 0 1 2 5 1 1 10 NW 0 0 1 2 0 0 3 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 2 13 52 11 6 84 Hours 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 STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 0 1 NE 0 0 0 2 3 0 5 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 4 2 6 SSE 0 0 0 2 4 1 7 s 0 1 0 4 3 0 8 SSW 0 1 0 0 0 0 1 SW 0 0 1 4 3 0 8 WSW 0 0 0 2 0 0 2 w 0 0 0 0 0 0 0 WNW 0 0 0 1 0 0 1 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 2 1 1 7 17 3 4 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: 1 7 9 Page 63of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 2 0 0 0 2 NNE 0 0 0 1 0 0 1 NE 0 0 0 6 1 0 7 ENE 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 ESE 0 0 2 0 0 0 2 SE 0 1 0 1 0 0 2 SSE 0 1 0 1 0 0 2 s 0 0 1 0 0 0 1 SSW 0 0 0 4 0 0 4 SW 0 1 3 7 2 0 13 WSW 0 0 1 1 1 0 3 w 0 0 0 0 0 0 0 WNW 0 0 1 1 0 0 2 NW 0 0 5 3 0 0 8 NNW 0 0 2 0 0 0 2 Variable 0 0 0 0 0 0 0 Total 0 3 17 2 5 4 0 4 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: 179 Page 64of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 3 1 1 0 0 5 NNE 0 2 0 0 0 0 2 NE 0 1 3 2 0 0 6 ENE 0 0 0 0 0 0 0 E 0 0 1 0 0 0 1 ESE 0 0 1 0 0 0 1 SE 0 2 0 0 0 0 2 SSE 0 1 1 1 0 0 3 s 0 3 1 5 1 0 10 SSW 0 0 0 3 1 0 4 SW 0 1 3 7 0 0 11 WSW 0 3 5 1 0 0 9 w 0 2 0 2 0 0 4 WNW 0 0 3 1 0 0 4 NW 0 0 2 2 0 0 4 NNW 0 0 4 0 0 0 4 Variable 0 0 0 0 0 0 0 Total 0 18 2 5 2 5 2 0 7 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: 179 Page 65of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 6 20 10 0 0 38 NNE 2 24 38 3 0 0 67 NE 0 22 29 26 6 0 83 ENE 0 4 14 28 10 15 71 E 1 0 5 25 5 0 36 ESE 0 4 3 11 0 0 18 SE 0 4 10 11 4 5 34 SSE 0 8 6 11 4 4 33 s 0 8 17 13 6 0 44 SSW 1 13 16 12 8 1 51 SW 4 15 9 12 4 0 44 WSW 1 10 22 20 7 4 64 w 0 11 45 33 14 3 106 WNW 0 4 27 25 4 0 60 NW 0 2 8 8 4 0 22 NNW 0 6 12 8 1 0 27 Variable 0 0 0 0 0 0 0 Total 11 141 281 256 77 32 798 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 21 Hours of missing stability measurements in all stability classes: 179 Page 66 of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 10 3 0 0 0 13 NNE 0 16 3 1 0 0 20 NE 0 1 2 2 0 0 5 ENE 0 2 5 5 0 0 12 E 0 2 28 9 0 0 39 ESE 0 6 1 1 0 0 8 SE 0 5 11 7 0 3 26 SSE 0 6 13 7 3 12 41 s 2 6 21 18 3 4 54 SSW 0 8 26 43 21 0 98 SW 1 3 12 20 4 2 42 WSW 0 4 18 25 6 1 54 w 2 4 8 15 13 11 53 WNW 1 5 10 3 10 10 39 NW 1 7 12 0 1 0 21 NNW 0 1 10 0 0 0 11 Variable 0 0 0 0 0 0 0 Total 7 86 183 156 61 43 536 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 11 Hours of missing stability measurements in all stability classes: 179 Page 67of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 0 0 3 NNE 1 0 0 0 0 0 1 NE 1 1 0 0 0 0 2 ENE 1 0 0 0 0 0 1 E 1 7 6 0 0 0 14 ESE 0 1 2 0 0 0 3 SE 0 6 0 0 0 0 6 SSE 1 10 6 4 0 0 21 s 1 7 20 13 0 0 41 SSW 1 6 22 15 0 0 44 SW 1 3 20 9 0 0 33 WSW 1 2 12 15 0 0 30 w 0 8 15 0 2 0 25 WNW 0 27 13 0 4 1 45 NW 0 5 0 0 0 0 5 NNW 0 2 1 0 0 0 3 Variable 0 0 0 0 0 0 0 Total 9 87 118 56 6 1 277 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 7 Hours of missing stability measurements in all stability classes: 179 Page 68 of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 2 3 0 0 0 0 5 ESE 0 14 4 0 0 0 18 SE 1 4 2 0 0 0 7 SSE 3 8 9 5 0 0 25 s 0 9 15 1 0 0 25 SSW 0 3 27 3 0 0 33 SW 1 6 14 8 0 0 29 WSW 2 5 12 1 0 0 20 w 0 14 7 0 0 0 21 WNW 1 25 1 0 0 0 27 NW 1 2 0 0 0 0 3 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 11 93 91 18 0 0 213 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 7 Hours of missing stability measurements in all stability classes: 179 Page 69of76 LASALLE COUNTY NUCLEAR POWER ST A TI ON EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 Variable 0 0 0 0 0 0 0 Total 0 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: 1 79 Page 70of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 0 0 1 SSW 0 0 0 0 0 0 0 SW 0 0 0 0 2 2 4 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 2 2 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: 1 7 9 Page 71 of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DATA LaSalle County Generating Station Period of Record: October -December 2015 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 1 1 NE 0 0 0 0 1 6 7 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 2 2 s 0 0 0 0 0 3 3 SSW 0 0 0 0 0 0 0 SW 0 0 0 2 4 3 9 WSW 0 0 0 1 1 0 2 w 0 0 0 0 0 0 0 WNW 0 0 0 1 0 0 1 NW 0 0 2 0 2 0 4 NNW 0 0 1 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 0 3 4 8 15 3 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: 179 Page 72of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 8 3 13 12 3 39 NNE 0 9 16 32 12 1 70 NE 1 7 26 29 24 27 114 ENE 0 5 9 10 22 9 55 E 0 0 1 7 19 9 36 ESE 0 0 3 6 8 5 22 SE 0 5 1 4 8 9 27 SSE 1 6 14 5 9 26 61 s 1 8 12 7 18 8 54 SSW 0 4 14 13 19 23 73 SW 3 13 17 22 15 8 78 WSW 0 4 11 18 12 8 53 w 0 3 16 30 22 34 105 WNW 0 0 8 31 17 8 64 NW 0 0 1 18 22 7 48 NNW 0 2 2 9 5 1 19 Variable 0 0 0 0 0 0 0 Total 6 74 154 254 244 186 918 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 50 Hours of missing stability measurements in all stability classes: 179 Page 73of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 0 5 6 3 14 NNE 0 0 5 8 2 0 15 NE 0 3 5 2 9 2 21 ENE 0 2 6 3 0 1 12 E 0 0 4 4 16 9 33 ESE 0 3 1 1 9 0 14 SE 0 3 3 7 6 5 24 SSE 0 0 6 11 12 20 49 s 0 2 3 9 18 18 50 SSW 1 1 5 21 34 80 142 SW 1 1 4 17 17 19 59 WSW 1 0 7 11 12 16 47 w 0 0 2 6 18 36 62 WNW 0 0 2 13 8 36 59 NW 0 0 4 16 13 1 34 NNW 0 1 2 8 5 0 16 Variable 0 0 0 0 0 0 0 Total 3 16 59 142 185 246 651 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 5 Hours of missing stability measurements in all stability classes: 179 Page 74of76 LASALLE COUNTY NUCLEAR POWER STATION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 7 2 1 14 NNE 0 1 3 0 1 0 5 NE 0 1 0 0 2 0 3 ENE 0 3 0 0 0 0 3 E 1 4 0 0 0 0 5 ESE 0 1 0 5 2 0 8 SE 1 2 0 2 4 2 11 SSE 0 0 7 3 1 1 12 s 0 0 7 2 3 17 29 SSW 2 0 1 18 16 15 52 SW 0 0 5 5 18 17 45 WSW 0 0 3 4 4 9 20 w 1 0 4 3 7 4 19 WNW 0 0 3 10 10 0 23 NW 0 3 7 19 12 0 41 NNW 0 1 4 8 1 0 14 Variable 0 0 0 0 0 0 0 Total 6 1 7 46 86 83 66 304 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: 179 Page 75of76 LASALLE COUNTY NUCLEAR POWER ST A TION EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (2015) METEOROLOGICAL DAT A LaSalle County Generating Station Period of Record: October -December 2015 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 1 0 1 0 0 2 NNE 0 0 1 0 0 0 1 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 0 1 0 3 0 4 SE 0 1 0 2 3 0 6 SSE 0 4 1 1 0 1 7 s 0 0 0 2 1 3 6 SSW 0 0 0 3 3 2 8 SW 0 0 1 5 2 1 9 WSW 0 0 1 0 3 6 10 w 0 1 0 0 2 0 3 WNW 0 1 1 2 0 0 4 NW 0 1 0 0 0 0 1 NNW 0 1 0 0 0 0 1 Variable 0 0 0 0 0 0 0 Total 0 11 6 16 17 13 63 Hours of calm in this stability class: 0 Hours of missing wind measurements in this stability class: 0 Hours of missing stability measurements in all stability classes: 179 Page 76of76 Appendix A Offsite Dose Calculation Manual Revision 6 ODCM Change Summary Matrix Determination identifier Editorial and grammatical

-Determination EG 1 Title Paae Title oaae EG 2 TOC TOC EG 3 TOC , TOC, page EG paaes 9-10 9 4 1-1.1-3 1-1.1-3 EG 5 1-12.4.1-3 1-12.4.1-3 EG 6 1-812.5.1-1 1-812.5.1-1 EG 7 11.1-14 11.1-14 EG 8 N/A 11.1-16 EG 9 11.1-17 11.1-17 EG 10 11.1-18 11.1-18 EG 11 11.1-20 11.1-20 EG 12 11.2-1 11.2-1 EG 13 11.2-2 11.2-2 EG 14 11.2-7 11.2-7 EG 15 11.2-8 11.2-8 EG 16 11.2-9 11.2-9 EG 17 11.2-10 11.2-9 EG 18 11.2-11 11.2-10 EG 19 11.2-12 11.2-11 EG 20 N/A 11.2-11 EG 21 11.2-13 11.2-12 EG 22 11.2-14 11.2-12 EG 23 N/A 11.2-12 EG 24 11.2-15 11.2-13 EG Paae 1 of 3 Description of change Added effective date. Table of Contents (TOC) was revised to reflect changes due to content added or removed. Spacing reduced to incorporate information on a single page. Added definition for "POSITION INDICATION VERIFICATION" as it relates to the position of the Slowdown Flow Control Valve actuator shaft. Reference AR #1515366-02. Corrected misspelling in definition of variable "B" from "counds" to "counts". Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed reference

  1. 60 which has been superseded per AR #1426577-07 and EC #375636. Added references
  1. 108 and #109 that supersede reference
  1. 60 per AR #1426577-07 and EC #375636. Removed revision bars left over from revision #4. Reference AR #1671059-02.

Removed revision bars left over from revision #4. Reference AR #1671059-02.

Inserted parenthesis ahead of" ... Cont'd" at top of page. Corrected misspelling from "INSTRUMENATATION" to "INSTRUMENTATION". Removed revision bars left over from revision #4. Reference AR #1671059-02.

Corrected editorial errors in sections 2.2.2 and 2.2.3. Removed revision bar left over from revision #4. Reference AR #1671059-02.

Corrected editorial error in section 2.4.1. Removed revision bar left over from revision #4. Reference AR #1671059-02. Replaced "O" in OPLD5J with "O" in section 2.5.1. Replaced "O" in OPLD2J with "O" in section 2.5.2. Removed page break in section 2.5.2. Replaced "00" in 1(2)D18-N009 with "00" in section 2.5.3. Corrected editorial error in section 2.6.2 by surrounding term at end of sentence with oarentheses.

Removed page break in section 2.6.2. Added paqe break after section 2.6.4. Removed space from inside parentheses of equation 2-5. Added equation number "(2-5)". Reference AR #1552182-02.

Added eauation number "(2-6)". Reference AR #1552182-02.

Removed oaae break. Added page break following section 2.6.5. Removed oaae break in section 2.6.7.

25 11.2-16 26 11.2-18 27 11.2-19 28 11.2-20 29 11.2-22 30 11.3-5 31 11.3-6 32 11.3-7 33 11.4-1 34 11.4-2 35 11.4-3 36 11.4-4 37 11.4-5 38 11.4-7 39 11.4-8 40 11.4-9 41 11.4-10 42 11.4-11 43 11.4-22 44 11.4-23 45 11.4-24 46 11.4-27 and 11.4-28 47 11.4-29 and 11.4-30 48 11.4-31 and 11.4-32 49 11.6-2 50 11.6-6 11.2-13 11.2-16 11.2-17 N/A 11.2-19 11.3-5 11.3-6 11.3-7 11.4-1 11.4-2 11.4-3 11.4-4 11.4-5 11.4-7 11.4-8 11.4-9 11.4-10 11.4-11 11.4-22 11.4-23 11.4-24 to 11.4-38 11.4-41 and 11.4-42 11.4-43 and 11.4-44 11.4-45 and 11.4-46 11.6-2 11.6-6 Determination identifier EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG EG Paae 2 of 3 Description of change Corrected editorial errors in "Pretreatment Monitor" and "Post-treatment Monitor" sections.

Removed space in "RM-23". Removed revision bars left over from revision #4. Reference AR #1671059-02.

Removed "FIGURE 10-1" from title box as it is no longer valid. Removed revision bars left over from revision #4. Reference AR #1671059-02.

Removed blank page. Removed revision bars left over from revision #4. Reference AR #1671059-02.

Added equation number "(3-3)". Added equation number "(3-4)". Added equation number "(3-5)". Removed revision bar left over from revision #4. Reference AR #1671059-02.

Updated section 4.1.1 from" ... dispersion parameters shown in Table 4-2 through Table 4-5 ... " to " ... dispersion parameters shown in Table 4-2 through Table 4-6 ... " due to the re-insertion of historical Table 4-6. Refer to Item #45. Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Removed revision bar left over from revision #4. Reference AR #1671059-02.

Corrected the title of Table 4-5, page 1 from "D/Q at the Nearest Milk Cow and Meat Animal Locations Within 5 Miles" to "X/Q and D/Q at the Nearest Meat Animal Locations Within 5 Miles". Corrected the title of Table 4-5, page 2 from "D/Q at the Nearest Milk Cow and Meat Animal Locations Within 5 Miles" to "X/Q and D/Q at the Nearest Milk Cow Locations Within 5 Miles". Re-inserted historical Table 4-6 that was removed in Revision 4. Reference AR #1552182-02.

Table 4-9 updated to enhance clarity. Table 4-10 updated to enhance clarity. Table 4-11 updated to enhance clarity. Added "33 Foot Elevation Data" to Table 4-11 (paae 1 of 2) to match Table 4-11 (paae 2 of 2). Added "a." to "Radioiodine and Particulates" in the Exposure Pathway column. Updated distances for well locations L-28 #6, L-28 #4, and L-28 #5 to 4.1 miles, 7.0 miles, and 6.7 miles, respectively.

Reference AR #1507387-02.

51 11-6-7 11.6-7 Determination identifier EG Paae 3 of 3 Description of change Reduced font size for entire page. Added "Refer to most recent Land Use Census for specific garden locations" to enhance sampling locations for Food Products --Table 6-1, Section 4.c.a. & 4.c.b. Reference AR #1507387-02.

Appendix B Offsite Dose Calculation Manual Part I RECS Part II ODCM LaSalle Station Units 1 and 2 Revision 6 NOTE: The implementation date of Revision 6 was January 6, 2015 and not November 26, 2014 as indicated on the ODCM Cover page.

OFFSITE DOSE CALCULATION MANUAL PART I RECS PARTIIODCM LaSalle Station Units 1and2 November 26, 2014 CY-LA-170-301 Revision 6 ODCM TABLE OF CONTENTS PART I -RADIOLOGICAL EFFLUENT CONTROLS (RECS) CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE 1.0 USE AND APPLICATION

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1-1.1-1 1.1 DEFINITIONS

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1-1.1-1 1.2 LOGICAL CONNECTORS

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1-1.2-1 1.3 COMPLETION TIMES .............................................................................................

1-1.3-1 1.4 FREQUENCY

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1-1.4-1 1.5 REC & RSA IMPLEMENTATION

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1-1.5-1 2.0-11.0 NOT USED 12.0 ODCM RADIOLOGICAL EFFLUENT CONTROL (REC) APPLICABILITY

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1-12.0-1 12.0 ODCM RADIOLOGICAL EFFLUENT SURVEILLANCE REQUIREMENT (RSA) APPLICABILITY

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1-12.0-3 12.1 NOT USED 12.2 INSTRUMENTATION

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1-12.2.1-1 12.2.1 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION

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1-12.2.1-1 12.2.2 Radioactive GASEOUS EFFLUENT MONITORING INSTRUMENTATION

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1-12.2.2-1 . 12.3 LIQUID EFFLUENTS

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1-12.3.1-1 12.3.1 Liquid Effluent Concentration

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1-12.3.1-1 12.3.2 Dose from Liquid Effluents .......................................................................

1-12.3.2-1 12.3.3 Liquid Radwaste Treatment System ........................................................

1-12.3.3-1 Page 1 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS PART I -RADIOLOGICAL EFFLUENT CONTROLS (RECS) CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE 12.4 GASEOUS EFFLUENTS AND TOTAL DOSE ....................................................

1-12.4.1-1 12.4.1 Gaseous Effluent Dose Rates .................................................................

1-12.4.1-1 12.4.2 Dose from Noble Gases .........................................................................

1-12.4.2-1 12.4.3 Dose from lodine-131, lodine-133, Tritium and Radioactive Materials in Particulate Form ......................................................................................

1-12.4.3-1 12.4.4 Gaseous Radwaste Treatment System ...................................................

1-12.4.4-1 12.4.5 Ventilation Exhaust Treatment System ....................................................

1-12.4.5-1 12.4.6 Mark II Containment

................................................................................

1-12.4.6-1 12.4.7 Total Dose ...............................................................................................

1-12.4.7-1 12.4.8 Main Condenser

......................................................................................

1-12.4.8-1 12.4.9 Dose Limits For Members Of The Public .................................................

1-12.4.9-1 12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM .....................

1-12.5.1-1 12.5.1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP) 1-12.5.1-1 12.5.2 LAND USE CENSUS ...............................................................................

1-12.5.2-1 12.5.3 lnterlaboratory COMPARISON PROGRAM .............................................

1-12.5.3-1 12.5.4 METEOROLOGICAL MONITORING PROGRAM ...................................

1-12.5.4-1 12.6 REPORTING REQUIREMENTS

........................................................................

1-12.6.1-1 12.6.1 Annual Radiological Environmental Operating Report ..........................

1-12.6.1-1 12.6.2 Annual Radioactive Effluent Release Report ........................................

1-12.6.2-1 12.6.3 Off-site Dose Calculation Manual (ODCM) ...........................................

1-12.6.3-1 12.6.4 Major Changes to Radioactive Waste Treatment Systems (Liquid and Gaseous) .......................................................................................

1-12.6.4-1 Page 2 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS PART I -RADIOLOGICAL EFFLUENT CONTROLS (RECS) CY-LA-170-301 Revision 6 ODCM Parts I and II B BASES ......................................................................................................................

1-8-1 8.12.0 REC & RSA APPLICABILITY BASES ..................................................

1-812.0-1 8.12.1 NOT USED 8.12.2 INSTRUMENTATION

........................................................................

1-B 12.2.1-1 B.12.2.1 Radioactive Liquid Effluent Monitoring Instrumentation

...............................................................

1-812.2.1-1 8.12.2.2 Radioactive Gaseous Effluent Monitoring Instrumentation

..............................................

1-812.2.2-1 812.3 LIQUID EFFLUENTS

.........................................................................

1-812.3.1-1 B.12.3.1 Liquid Effluent Concentration

..........................................

1-812.3.1-1 B.12.3.2 Dose from Liquid Effluents

..............................................

1-812.3.2-1 8.12.3.3 Liquid Radwaste Treatment Systems ..............................

1-812.3.3-1 B.12.4 GASEOUS EFFLUENTS

& TOTAL DOSE ........................................

1-812.4.1-1 8.12.4.1 Gaseous Effluent Dose Rates .........................................

1-812.4.1-1 8.12.4.2 Dose From Noble Gases .................................................

1-812.4.2-1 B.12.4.3 Dose From lodine-131, lodine-133Tritium And Radioactive Materials In Particulate Form .......................

1-812.4.3-1 B.12.4.4 Gaseous Radwaste Treatment (Offgas) System ..............................................................

1-812.4.4-1 B.12.4.5 Ventilation Exhaust Treatment System ...........................

1-812.4.5-1 8.12.4.6 Mark II Containment

........................................................

1-812.4.6-1 8.12.4.7 Total Dose .......................................................................

1-812.4.7-1 B.12.4.8 Main Condenser

..............................................................

1-812.4.8-1 B.12.4.9 Dose Limits for Members of the Public ............................

1-812.4.9-1 8.12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ..... 1-812.5.1-1 8.12.5.1 REMP ..............................................................................

1-812.5.1-1 8.12.5.2 Land Use Census ............................................................

1-812.5.2-1 B.12.5.3 lnterlaboratory Comparison Program ..............................

1-812.5.3-1 B.12.5.4 Meteorological Monitoring Program ................................

1-B 12.5.4-1 Page 3 of 10 LaSalle ODCM Table of Contents TABLE OF CONTENTS PART II -ODCM CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE

1.0 INTRODUCTION

-ODCM GENERAL INFORMATION

............................................

11.1-1 1.1 STAUCTUAEOFTHEODCM

.......................................................................

11.1-1 1.2 REGULATIONS

..............................................................................................

11.1-2 1.2.1 Code of Federal Regulations

...............................................................

11.1-2 1.2.2 Radiological Effluent Technical Specifications

.....................................

11.1-4 1.2.3 Offsite Dose Calculation Manual ..........................................................

11.1-5 1.2.4 Overlapping Requirements

..................................................................

11.1-5 1.2.5 Dose Receiver Methodology

................................................................

11.1-6 1.3 OFFSITE DOSE CALCULATION PARAMETERS

........................................

11.1-10

1.4 REFERENCES

.............................................................................................

11.1-10 2.0 INSTRUMENTATION AND SYSTEMS .....................................................................

11.2-1 2.1 LIQUID RELEASES ........................................................................................

11.2-1 2.1.1 Radwaste Discharge tanks ............................................................

11.2-1 2.1.2 Cooling Pond Blowdown ................................................................

11.2-1 2.2 RADIATION MONITORS ................................................................................

11.2-2 2.2.1 Liquid Radwaste Effluent Monitor ..................................................

11.2-2 2.2.2 Service Water Effluent Monitor ......................................................

11.2-2 2.2.3 AHR Heat Exchange Cooling Water Effluent Monitors ..................

11.2-2 2.3 LIQUID RADIATION EFFLUENT MONITORS ALARM AND TRIP SETPOINTS

..........................................................................................

11.2-2 2.3.1 Liquid Radwaste Effluent Monitor ..................................................

11.2-2 2.3.2 Service Water Effluent Monitor ......................................................

11.2-3 2.3.3 AHR Heat Exchanger Cooling Water Effluent Monitors .................

11.2-3 2.3.4 Discharge Flow Rates ...................................................................

11.2-4 2.3.5 Allocation of Effluents from Common Release Points ...................

11.2-5 2.3.6 Projected Doses from Releases ....................................................

11.2-6 2.3.7 Solidification of Waste/Process Control Program ..........................

11.2-6 2.4 AIRBORNE RELEASES .................................................................................

11.2-6 2.4.1 Condenser Offgas Treatment System ...........................................

11.2-7 2.4.2 Ventilation Exhaust Treatment System ..........................................

11.2-8 2.5 GASEOUS EFFLUENT RADIATION MONITORS ..........................................

11.2-8 2.5.1 Station Vent Stack Effluent Monitor ...............................................

11.2-8 2.5.2 Standby Gas Treatment System Effluent Monitor .........................

11.2-8 2.5.3 Reactor Building Ventilation Monitors ............................................

11.2-9 2.5.4 Condenser Air Ejector Monitors .....................................................

11.2-9 2.5.5 Turbine Building Trackway and North Service Building ...............

11.2-1 O Page 4 of 10 LaSalle ODCM Table of Contents PART II -ODCM 2.6 TABLE OF CONTENTS CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE GASEOUS RADIATION EFFLUENT ALARM AND TRIP SETPOINTS

.11.2-10 2.6.1 Reactor Building Vent Effluent Monitor ........................................

11.2-1 O 2.6.2 Condenser Air Ejector Monitors ...................................................

11.2-10 2.6.3 Station Vent Stack Effluent Monitor .............................................

11.2-11 2.6.4 Standby Gas Treatment Stack Monitor ........................................

11.2-11 2.6.5 Release Limits .............................................................................

11.2-12 2.6.6 Release Mixture ..........................................................................

11.2-13 2.6.7 Conversion Factors .....................................................................

11.2-13 2.6.8 HVAC Flow Rates ........................................................................

11.2-13 2.6.9 Allocation of Effluents from Common Release Points .................

11.2-14 2.6.1 O Dose Projections

.........................................................................

11.2-14 3.0 LIQUID EFFLUENTS

..........................................................................................

11.3-1 3.1 LIQUID EFFLUENT RELEASES-GENERAL INFORMATION

...............

11.3-1 3.2 LIQUID EFFLUENT CONCENTRATIONS

...............................................

11.3-2 3.3 LIQUID EFFLUENT DOSE CALCULATION REQUIREMENTS

...............

11.3-4 3.4 DOSE METHODOLOGY

..........................................................................

11.3-5 3.4.1 Liquid Effluent Dose Method: General..

.........................................

11.3-5 3.4.2 Potable Water Pathway .................................................................

11.3-6 3.4.3 Fish Ingestion Pathway .................................................................

11.3-7 3.4.4 Offsite Doses .................................................................................

11.3-7 3.4.5 Drinking Water ...............................................................................

11.3-7 3.5 BIOACCUMULA TION FACTORS ............................................................

11.3-7 4.0 GASEOUS EFFLUENTS

....................................................................................

11.4-1 4.1 GASEOUS EFFLUENTS

-GENERAL INFORMATION

..........................

11.4-1 4.2 GASEOUS EFFLUENTS

-DOSE AND DOSE RATE CALCULATION REQUIREMENTS

....................................................................................

11.4-2 4.2.1 Instantaneous Dose Rates ............................................................

11.4-2 4.2.2 Time Averaged Dose from Noble Gas ...........................................

11.4-5 4.2.3 Time Averaged Dose from Non-Noble Gas Radionuclides

............

11.4-9 Page 5 of 10 LaSalle ODCM Table of Contents TABLE OF CONTENTS PART II -ODCM CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE 5.0 TOTALDOSE

.....................................................................................................

11.5-1 5.1 TOTAL DOSE CALCULATION REQUIREMENTS

...................................

11.5-1 5.1.1 Total Effective Dose Equivalent Limits; 1 OCFR20 and 40CFR190 .....................................................................................

ll.5-1 5.1.2 Total Dose Calculation Methodology

.............................................

11.5-2 5.1.3 BWR Skyshine ..............................................................................

11.5-2 5.2 BWR SKYSHINE CALCULATION

.............................................................

11.5-3 5.3 ONSITE RADWASTE AND RAD MATERIAL STORAGE FACILITIES

..... 11.5-6 5.3.1 Process Waste Storage Facilities

................................................

11.5-6 5.3.2 DAW Storage Facilities

................................................................

11.5-6 5.3.3 ISFSI Facilities

.............................................................................

11.5-6 5.4 METHODOLOGY

......................................................................................

11.5-6 5.5 TOTAL DOSE ............................................................................................

11.5-7 5.6 COMPLIANCE TO TOTAL DOSE LIMITS .................................................

11.5-8 5.6.1 Total Effective Dose Equivalent Limit-10CFR20 Compliance

..... 11.5-8 5.6.2 Dose to a MEMBER OF THE PUBLIC in the Unrestricted Area ...............................................................................................

11.5-8 5.6.3 Dose to a MEMBER OF THE PUBLIC in the Restricted Area ....... 11.5-8 5.6.4 Total Dose Due to the Uranium Fuel Cycle (40CFR190)

...............

ll.5-9 5.7 WHEN COMPLIANCE ASSESSMENT IS REQUIRED ...........................

11.5-10 6.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ......................

11.6-1 Page 6 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS LIST OF TABLES PART I -RADIOLOGICAL EFFLUENT CONTROLS (RECS) CY-LA-170-301 Revision 6 ODCM Parts I and II PAGE Table 1-1 Compliance Matrix .............................................................................

1-1 . 1-6 Table R12.2.1-1 Radioactive Liquid Effluent Monitoring Instrumentation

................

1-12.2.1-5 Table R12.2.2-1 Radioactive Gaseous Effluent Monitoring Instrumentation

...........

1-12.2.2-5 Table R12.2.2-2 Radioactive Gaseous Effluent Monitoring Instrumentation Applicability

...................................................................................

1-12.2.2-7 Table R12.3.1-1 Allowable Concentration of Dissolved or Entrained Noble Gases Released from the Site to Unrestricted Areas in Liquid Waste .................................................................................

1-12.3.1-3 Table R12.3.1-2 Radioactive Liquid Waste Sampling and Analysis Program ..........

1-12.3.1-4 Table A12.4.1-1 Radioactive Gaseous Waste Sampling and Analysis Program ..... 1-12.4.1-2 Table R12.5.1-1 Radiological Environmental Monitoring Program ..........................

1-12.5.1-6 Table R12.5.1-2 Reporting Levels for Radioactivity Concentrations in Environmental Samples ..............................................................

1-12.5.1-11 Table R12.5.1-3 Detection Capabilities for Environmental Sample Analysis . Lower Limit of Detection

.............................................................

1-12.5.1-12 PART II -ODCM Table 1-1 Regulatory Dose Limit Matrix ..........................................................................

11.1-7 Table 1-2 Dose Assessment Receivers

..........................................................................

11.1-8 Table 1-3 Miscellaneous Dose Assessment Factors: Environmental Parameters

........ 11.1-17 Table 1-4 Stable Element Transfer Data ......................................................................

11.1-19 Table 2-1 Assumed Composition Of the LaSalle Station Noble Gas Effluent..

.............

11.2-15 Page 7 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS LIST OF TABLES CY *LA* 170-301 Revision 6 ODCM Parts I and II PART II -ODCM PAGE Table 3-1 Bioaccumulation Factors (Bfi) to be Used in the Absence of Site-Specific Data ..................................................................................................

11.3-8 Table 4-1 Critical Ranges .............................................................................................

11.4-18 Table 4-2 Average Wind Speeds ..................................................................................

11.4-19 Table 4-3 X/Q and D/Q Maxima at or Beyond the Unrestricted Area Boundary ...........

11.4-20 Table 4-4 X/Q and D/Q Maxima at or Beyond the Restricted Area Boundary ..............

11.4-21 Table 4-5 X/Q and D/Q at the Nearest Meat Animal Locations within 5 miles ..............

11.4-22 (Page 1) Table 4-5 X/Q and D/Q at the Nearest Milk Cow Locations within 5 miles ...................

11.4-23 (Page 2) Table 4-6 Maxium Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary For Various Nuclides ...................

11.4.24 Table 4-7 Deleted .........................................................................................................

11.4-39 Table 4-8 Parameters for Calculations of N-16 Skyshine Radiation From LaSalle ..........................................................................................................

11.4-40 Table 4-9 Elevated Level Joint Frequency Distribution Table Summary .......................

11.4-41 Table 4-10 Mid Elevation Joint Frequency Distribution Table Summaries

......................

11.4-43 Table 4-11 Ground Level Joint Frequency Distribution Table Summary .........................

11.4-45 Table 4-12 Station Characteristics

......................................................................................

11.4-47 Table 4-13 Dose Factors for Noble Gases ......................................................................

11.4-48 Table 4-14 External Dose Factors for Standing on Contaminated Ground DFGi 1 (mrem/hr per pCi/ m 2) ...................................................................................

11.4-49 Table 4-15 Maximum 81 and V1 at or Beyond the Unrestricted Area Boundary ...............

11.4-52 Table 4-16 Infant Drinking Water AiT ...............................................................................

11.4-67 Page 8 of 10 LaSalle ODCM Table of Contents CY *LA* 170*301 Revision 6 ODCM Parts I and II Table 4-17 Child Drinking Water Air ...............................................................................

11.4-71 Table 4-18 Teen Drinking Water Arr ...............................................................................

11.4-75 Table 4-19 Adult Drinking Water Arr ...............................................................................

11.4-79 Table 4-20 Infant Fish Arr ...............................................................................................

11.4-83 Table 4-21 Child Fish Arr ................................................................................................

11.4-87 Table 4-22 Teen Fish Air ................................................................................................

11.4-91 Table 4-23 Adult Fish Air ................................................................................................

11.4-95 Table 4-24 Infant Inhalation P1 ........................................................................................

11.4-99 Table 4-25 Child Inhalation Pi .......................................................................................

11.4-103 Table 4-26 Teen Inhalation P 1 .......................................................................................

ll.4-107 Table 4-27 Adult Inhalation Pj .......................................................................................

11.4-111 Table 4-28 All Age Groups Ground Plane R1 ................................................................

11.4-115 Table 4-29 Infant Inhalation Ri ......................................................................................

11.4-119 Table 4-30 Child Inhalation Ri .......................................................................................

11.4-123 Table 4-31 Teen Inhalation Rt .......................................................................................

11.4-127 Table 4-32 Adult Inhalation Rt .......................................................................................

11.4-131 Table 4-33 Infant Vegetation R1 ....................................................................................

11.4-135 Table 4-34 Child Vegetation R1 .....................................................................................

11.4-139 Table 4-35 Teen Vegetation Ri .....................................................................................

11.4-143 Table 4-36 Adult Vegetation R1 .....................................................................................

11.4-147 Table 4-37 Infant Milk R1 ...............................................................................................

11.4-151 Table 4-38 Child Milk Ri ................................................................................................

11.4-155 Table 4-39 Teen Milk Rt ................................................................................................

11.4-159 Table 4-40 Adult Milk R1 ................................................................................................

11.4-163 Table 4-41 Infant Meat Rt .............................................................................................

11.4-167 Table 4-42 Child Meat R1 ..............................................................................................

11.4-171 Table 4-43 Teen Meat R1 ..............................................................................................

11.4-175 Table 4-44 Adult Meat Rt ..............................................................................................

11.4-179 Table 6-1 Radiological Environmental Monitoring Program ............................................

11.6-2 Page 9 of 10 LaSalle ODCM Table of Contents ODCM TABLE OF CONTENTS LIST OF FIGURES CY-LA-170-301 Revision 6 ODCM Parts I and II PART I -RADIOLOGICAL EFFLUENT CONTROLS PAGE None PART 11-0DCM Figure 1-1 Radiation Exposure Pathways to Humans ...............................................

11.1-9 Figure 1-2 Unrestricted Area Boundary ...................................................................

11.1-21 Figure 1-3 Restricted Area Boundary ......................................................................

11. 1-22 Figure 2-1 Simplified Gaseous Radwaste and Gaseous Effluent Flow Diagram ..... 11.2-16 Figure 2-2 Simplified Liquid Radwaste Processing Diagram ................................... 11.2-18 '2-C\'5 Figure 2-3 Simplified Liquid Effluent Flow Diagram ................................................. 11.2-19 Figure 2-4 Simplified Solid Radwaste Processing Diagram ..................................... 11.2-20 Figure 6-1 Fixed Air Sampling Sites and Outer Ring Field Dosimeter

.......................

11.6-9 Figure 6-2 Inner Ring Field Dosimeter

.....................................................................

11.6-10 Figure 6-3 Ingestion and Waterborne Exposure Pathway Sample Locations

.........

11.6-11 Page 10 of 10 LaSalle ODCM Table of Contents

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