Text

Submittal of 2016 Radioactive Effluent Release Report
	ML17121A310
Person / Time
Site:	Dresden
Issue date:	04/26/2017
From:	Karaba P; Exelon Generation Co
To:	; Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
	SVPLTR 17-0017
	Download: ML17121A310 (179)
	v • d • e

7

> Exelon Generation Dresden Nuclear Power Station 6500 North Dresden Road Morris, IL 60450 10 CFR 50.36a (a)(2)

April 26, 2017 SVPLTR: #17-0017 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Dresden Nuclear Power Station, Units 1, 2 and 3 Facility Operating License No. DPR-2 Renewed Facility Operating License Nos. DPR-19 and DPR-25 NRC Docket Nos.50-010. 50-237, and 50-249

Subject:

Dresden Nuclear Power Station 2016 Radioactive Effluent Release Report The Radioactive -Effluent Release Report for January through December 2016 for Dresden Nuclear Power Station (DNPS) is submitted in accordance with Sections 6:9.A.4 and 5.6.3, "Radioactive Effluent Release Report," of the DNPS Unit 1 and Units 2 and 3 Technical Specifications, respectively and 10 CFR 50.36a (a)(2), "Technical specifications on effluents from nuclear power reactors."

Should you have any questions concerning this letter, please contact Mr. Bruce Franzen, Regulatory Assurance Manager, at (815) 416-2800.

Respectfully, Peter J. Karaba Site Vice President Dresden Nuclear Power Station Attachments: DNPS 2016 Annual Radioactive Effluent Release Report cc: Regional Administrator- NRC Region Ill NRC Senior Resident Inspector, DNPS

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 SUPPLEMENTAL INFORMATION DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear

1. Regulatory Limits

a. Fission and activation gases:

Dose Rate (site)

(1) Less than 500 mrem/year to the whole body.

(2) Less than 3000 mrem/year to the skin.

Gamma Air Dose (each unit)

(1) Less than or equal to 5 mrad/quarter.

(2) Less than or equal to 10 mrad/year.

Beta Air Dose (each unit)

(1) Less than or equal to 10 mrad/quarter.

(2) Less than or equal to 20 mrad/year.

b.,c. Iodine-131, lodine-133, and all radionuclides in particulate form with half-lives greater than 8 days:

Dose Rate (site)

(1) Less than 1500 mrem/year to any organ.

Dose (each unit)

(1) Less than or equal to 7.5 mrem/quarter to any organ.

(2) Less than or equal to 15 mrem/year to any organ.

d. Liquid effluents (each unit):

(1) Less than or equal to 1.5 mrem to the whole body during any calendar quarter.

(2) Less than or equal to 5 mrem to any organ during any calendar quarter.

(3) Less than or equal to 3 mrem to the whole body during any calendar year.

(4) Less than or equal to 10 mrem to any organ during any calendar year.

e. 40CFR190 and 10CFR72 (all uranium fuel cycle operations in the region):

(1) Less than or equal to 25 mrem annual whole body dose.

(2) Less than or equal to 75 mrem annual thyroid dose.

(3) Less than or equal to 25 mrem annual dose to any other critical organ.

2. Effluent Concentration Limits Dose rates, rather than effluent concentrations, are used to calculate permissible release rates for gaseous effluents. The maximum permissible dose rates for gaseous releases are defined in Dresden Offsite Dose Calculation Manual (ODCM)

Radiological Effluent Control (REC) 12.4.1.

Liquid effluent concentrations are limited per ODCM REC 12.3.1to10 times the concentration specified in 10CFR20 Appendix B, Table 2, Column 2 for radionuclides other than dissolved or entrained noble gases and 2.00E-04 µCi/ml total activity for all dissolved or entrained noble gases.

Page 1of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 SUPPLEMENTAL INFORMATION DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear

3. Average Energy The ODCM limits dose rates at or beyond the site boundary due to the release of noble gases to less than or equal to 500 mrem per year to the total body and less than or equal to 3,000 mrem per year to the skin, and average energy is not used to determine dose to the public. Compliance with these limits is demonstrated based on dose calculations using measured isotopic concentrations of effluent streams and not based on gross count rate measuring systems.

Therefore, the average beta and gamma energies (E) for gaseous effluents as described in Regulatory Guide 1.21, "Measuring, Evaluating, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Nuclear Power Plants," are not applicable.

4. Measurement and Approximations of Total Radioactivity

a. Fission and Activation Gases:

b. Iodines:

c. Particulates:

d. Tritium:

e. Gross Alpha The 2/3 Chimney, 2/3 Reactor Building Vent, and Chemical Cleaning Building effluents are continuously sampled for iodines and particulates. These samples are changed weekly and analyzed by gamma spectroscopy. The particulate filters are composited and sent to a vendor for gross alpha, Sr-89, Sr-90, and Fe-55 analysis. Noble gas grab samples of the 2/3 Chimney and 2/3 Reactor Building Vent are obtained weekly and analyzed by gamma spectroscopy. Contributing streams of the 2/3 Chimney and 2/3 Reactor Building Vent are also sampled and analyzed by gamma spectroscopy.

Tritium samples of the 2/3 Chimney and 2/3 Reactor Building Vent are obtained monthly and analyzed by liquid scintillation.

For the 2/3 Chimney and 2/3 Reactor Building Vent effluents, the measured flow at the release points is used to calculate the curies released. For the Chemical Cleaning Building effluent, the design basis flows are used to calculate curies released.

f. Carbon-14:

Carbon-14 activity released is estimated using Electric Power Research Institute Technical Report 1021106 Boiling Water Reactor proxy values (5.1 Ci per GWth year, Section 3.7) and the rated thermal capacity maintained for the entire calendar year. Resultant dose is calculated using approved methodologies.

g. Liquid Effluents:

The river discharge tank is analyzed for gamma-emitting nuclides by gamma spectroscopy and for tritium by liquid scintillation prior to discharge. A representative portion of this sample is saved and composited with other discharges that occur during the calendar month. The composite is sent to a vendor for analyses of gross alpha, Sr-89, Sr-90, and Fe-55.

The tank volumes and activities are used to calculate the diluted activity released at the discharge point from batch discharges.

Containment Cooling Service Water (CCSW) is sampled from the Low Pressure Coolant Injection (LPCI) heat exchangers monthly and analyzed for gamma-emitting nuclides by gamma spectroscopy. These samples are composited quarterly and analyzed for tritium, gross alpha, Sr-89, Sr-90, Fe-55, and Ni-63. Results from the quarter are conservatively applied for each month of the quarter. Batch release volume is based on LPCI heat exchanger volume.

h. Estimated Total Errors:

Page 2of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 SUPPLEMENTAL INFORMATION DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear The estimated total errors were calculated as the square root of the sum of the squares of significant errors present in the sampling and analysis process.

i. Less than the Lower Limit of Detection (<LLD)

Samples are analyzed such that the ODCM LLD requirements are met. When a nuclide is not detected, then <LLD is reported.

5. . Batch Releases (does not include Abnormal I Unmonitored Releases described below in points 6 and 7)

a. Liquid - Radwaste Liquid Effluents - None Liquid - CCSW/LPCI (1) Number of batch releases: 0 (2) Total time period for batch releases: O.OOE+OO minutes (3) Maximum time period for a batch release: O.OOE+OO minutes (4) Average time period for a batch release: O.OOE+OO minutes (5) Minimum time period for a batch release: O.OOE+OO minutes (6) Average stream flow during periods of release of effluent into a flowing stream: O.OOE+OO lpm

b. Gaseous - None

6. Abnormal Releases (reported in Summation of all Releases tables as well as in Radiological Impact on Man section)

a. Liquid (1) Number ofreleases: 0 (2) Total activity released: O.OOE+OO Ci

b. Gaseous (1) Number of releases: 1 (2) Total activity released: 4.llE+OO Ci A ventilation issue at the Off Gas Filter Building (OGFB) was identified on 6/1/16 that resulted in a determination that an unplanned release to the environment had occurred. The estimated activity released from this event is included in the Summation of all Releases and the nuclide tables in this report. The estimated dose from this event is included in the totals of the Radiological Impact on Man section of this report and was well below regulatory limts.

7. Unmonitored Releases (reported in Summation of all Releases tables as well as in Radiological Impact on Man section)

a. Liquid (1) Number of releases: 2 (Storm Sewer System, Sewage Treatment Plant Effluent)

(2) Total activity released: 3.76E-01 Ci Water in on-site storm sewers is routinely sampled and analyzed for tritium content. The highest storm drain concentrations of tritium measured during each month of 2016 were used to calculate the released activity for each month.

The total activity released to the environment is based on an estimated typical discharge flow of 10 gallons per minute.

Low level tritium was detected throughout the year 2016. The total estimated tritium activity released via the storm sewers in 2016 was 3.62E-Ol Ci.

Water in the Sewage Treatment Plant (STP) effluent is routinely sampled and analyzed for tritium, gross alpha, Sr-89, Sr-90, Fe-55, and Ni-63. Tritium was detected in the STP effluent in Januaiy and Febmaty of 2016. All other nuclide Page 3of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 SUPPLEMENTAL INFORMATION DOCKET NUMBERS: 50-010/50-23 7/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear values were less than the Lower Limit of Detection (<LLD). The total estimated tritium activity released via the STP in 2016 was l.39E-02 Ci.

The estimated dose from these liquid releases was well below regulatory limits.

b. Gaseous (1) Number of releases: 5 (Unit lMain Turbine Floor and Unit 1 Fuel Building, Chemistry Laboratory Ventilation Effluent, Units 2/3 Heating Steam System, East Turbine Building Ventilation, and Unit 3 Isolation Condenser Test)

(2) Total activity released: 2.91E-04 Ci The Unit 1 Main Turbine Floor is used as an area to work on contaminated equipment. The Unit 1 Fuel Building is used as a storage area and potentially as a work area. The ventilation systems to these areas are no longer operational and the areas are at ambient pressure with the outside environment. The potential exists for airborne activity to be released to the environment through various points. Based on the work normally performed in these areas, an estimated 7.20E-05 Ci of Cs-137 was released via this path during 2016.

The Chemistry Laboratory exhausts directly into the environment via its ventilation system. This release path is not monitored. Based on an evaluation of activities performed in the area, the estimated activity released to the environment from the laboratory in 2016 is 4.53E-05 Ci.

The Unit 2/3 Heating Steam System has been contaminated in the past. The system continues to contain low-level contamination. During normal operation, the condensate is converted to steam, a portion of which gets vented to the atmosphere. Tritium was the only nuclide detected in 2016. An estimated 9.35E-06 Ci of activity was released to the environment during 2016.

The East Turbine Building Ventilation System exhausts directly into the environment. This release path is not monitored.

Low-level removable contamination has been detected in the system in the past. An estimated 3.36E-06 Ci of Co-60 was released to the environment during 2016.

The Unit 3 Isolation Condenser was actuated during planned testing on 10/20/16. Low level tritium was detected in samples at the time of the test and an estimated 1.61E-04 Ci was released during the test.

The estimated dose from these gaseous releases was well below regulatory limits.

8. Summary of Offsite Dose Calculation Manual (ODCM) Changes by Dresden Nuclear Power Station (DNPS) in 2016:

None: Revision 12 of the ODCM, issued in 2012, was in effect throughout 2016.

9. EtTata:

Corrected pages are attached for the Annual Radioactive Effluent Release Report (ARERR) for calendar year 2014 and 2015. For the year 2014, page 34of134 was cotTected to indicate that there were changes to the Process Cotnrol Program (PCP) in 2014. For the year 2015, page 78of177 was cotTected to indicate that there were changes to the PCP in 2015. These errata pages and the entire PCP procedure, RW-AA-100, are attached as Attachment 1. The changes to the PCP in 2014 and 2015 included provisions for concentration averaging allowed by the NRC Branch Technical Position on Concenfration Averaging and Encapsulation. Although the revised PCP allows these specific activities, Dresden Station has not made physical equipment changes or process changes to perform those activites.

Page 4of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-23 7 /50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear UNITS 1,2,3 GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES l st 2 nd 3rd 4th Est. Total Units Quarter Quarter Quarter Quarter Error,%

A. Fission & activation gases

1. Total release Ci l.37E+Ol 1.58E+Ol l.97E+Ol l.43E+Ol l.31E+Ol I

2. Average release rate for period µCi/sec l.75E+OO 2.0lE+OO 2.47E+OO 1.79E+OO

3. Percent of ODCM annual dose limit Whole 3.52E-04 l.12E-03 3.39E-04 l.97E-04 Body

%Skin 9.96E-05 3.21E-04 9.64E-05 5.66E-05 B. Iodine-131

1. Total release Ci 4.20E-04 6.71E-04 5.0?E-04 2.59E-04 2.60E+Ol I

'* 2. Average release rate for period µCi/sec 5.34E-05 8.53E-05 6.38E-05 3.26E-05

3. Percent of ODCM annual dose limit(*) % 7.llE-03 l.lOE-02 8.43E-03 4.69E-03 C. Particulates

1. Particulates with half-lives > 8 days Ci 7.41E-04 1.21E-03 l.31E-03 1.23E-03 2.94E+Ol I

2. Average release rate for period µCi/sec 9.42E-05 l.55E-04 l.65E-04 l.55E-04

3. Percent of ODCM annual dose limit (*) % 7.1 lE-03 l.lOE-02 8.43E-03 4.69E-03 D. Tritium

1. Total release Ci l.76E+OO l.72E+OO l.56E+OO l.46E+OO 7.56E+OO I

2. Average release rate for period µCi/sec 2.23E-01 2.19E-01 1.97E-01 1.83E-01

3. Percent of ODCM annual dose limit (*) % 7.llE-03 l.lOE-02 8.43E-03 4.69E-03 E. Gross Alpha

1. Total release Ci <LLD <LLD <LLD <LLD 2.94E+Ol I

2. Average release rate for period µCi/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of ODCM annual dose limit % NIA NIA NIA NIA F. Carbon-14

1. Total release Ci 7.46E+OO 7.46E+OO 7.54E+OO 6.88E+OO

2. Average release rate for period µCi/sec 9.49E-01 9.49E-01 9.49E-01 8.66E-01

(*):"Percent of ODCM annual dose limit" indicates combined total of Iodine-131, Particulates, and Tritium Page 5of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear UNIT 1 GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES l st 2 nd 3 rd 4th Est. Total Units Quarter Quarter Quarter Quarter Error,%

A. Fission & activation gases

1. Total release Ci <LLD <LLD <LLD <LLD l.31E+Ol I

2. Average release rate for period u,Ci/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of ODCM quarterly dose limit %y NIA NIA NIA NIA

%~ NIA NIA NIA NIA B. Iodine-131

1. Total release Ci <LLD <LLD <LLD <LLD 2.60E+Ol I

2. Average release rate for period u,Ci/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of ODCM quarterly dose limit(*) % NIA NIA NIA NIA C. Particulates

1. Particulates with half-lives > 8 days Ci l.88E-05 l.86E-05 l.90E-05 l.84E-05 2.94E+Ol I

2. Average release rate for period u,Ci/sec 2.40E-06 2.37E-06 2.39E-06 2.32E-06

3. Percent of ODCM quarterly dose limit (*) % 6.23E-03 6.21E-03 6.24E-03 6.20E-03 D. Tritium

1. Total release Ci <LLD <LLD <LLD <LLD 7.56E+OO I

2. Average release rate for period µCi/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of ODCM quarterly dose limit (*) % NIA NIA NIA NIA E. Gross Alpha

1. Total release Ci <LLD <LLD <LLD <LLD 2.94E+Ol I

2. Average release rate for period µCi/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of ODCM quarterly dose limit % NIA NIA NIA NIA F. Carbon-14

1. Total release Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

2. Average release rate for period µCi/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

(*): "Percent of ODCM quarterly dose limit" indicates combined total of Iodine-131, Particulates, and Tritium Page 6 of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear UNIT2 GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES l st 2 nd 3rd 4th Est. Total Units Quarter Quarter Quarter Quarter Error,%

A. Fission & activation gases

1. Total release Ci 2.85E+OO 3.92E+OO 5.04E+OO 5.51E+OO 1.31E+Ol I

2. Average release rate for period µCi/sec 3.62E-01 4.98E-01 6.34E-01 6.93E-01

3. Percent of ODCM quarterly dose limit o/oy 2.88E-03 8.86E-03 3.36E-03 2.40E-03

%f3 6.0lE-05 l.83E-03 7.85E-05 l.26E-04 B. Iodine-131

1. Total release Ci l.OOE-04 7.96E-05 6.79E-05 7.88E-05 2.60E+Ol I

2. Average release rate for period µCi/sec l.28E-05 l.OlE-05 8.54E-06 9.92E-06 3.. Percent of ODCM quarterly dose limit (*) % l.49E-01 l.48E-01 l.50E-01 l.54E-01 C. Particulates

1. Particulates with half-lives > 8 days Ci l.79E-04 l.44E-04 l.68E-04 4.14E-04 2.94E+Ol I

2. Average release rate for period µCi/sec 2.28E-05 l.83E-05 2.llE-05 5.21E-05

3. Percent of ODCM quarterly dose limit (*) % l.49E-01 l.48E-01 l.50E-01 l.54E-01 D. Tritium

1. Total release Ci 4.36E-01 2.04E-01 2.llE-01 4.93E-01 7.56E+OO I

2. Average release rate for period µCi/sec 5.54E-02 2.60E-02 2.65E-02 6.20E-02

3. Percent of ODCM quarterly dose limit (*) % l.49E-01 l.48E-01 l.50E-01 l.54E-01 E. Gross Alpha

1. Total release Ci <LLD <LLD <LLD <LLD 2.94E+Ol I

2. Average release rate for period µCi/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO*

3. Percent of ODCM quarterly dose limit % NIA NIA NIA NIA F. Carbon-14

1. Total release Ci 3.73E+OO 3.73E+OO 3.77E+OO 3.77E+OO

2. Average release rate for period µCi/sec 4.74E-01 4.74E-01 4.74E-01 4.74E-01

(*): "Percent of 0 DCM quarterly dose limit" indicates combined total oflodine-131, Particulates, and Tritium

. Page 7of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear UNIT3 GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES l st nd rd 4th 2 3 Est. Total Units Quarter Quarter Quarter Quarter Error,%

A. Fission & activation gases

1. Total release Ci l.09E+Ol l.19E+Ol l.46E+Ol 8.75E+OO 1.31E+Ol I

2. Average release rate for period µCi/sec l.38E+OO 1.52E+OO 1.84E+OO l.IOE+OO

3. Percent of ODCM quarterly dose limit %y l.03E-02 2.40E-02 9.51E-03 5.0SE-03

%~ 2.03E-04 5.42E-03 2.15E-04 2.0SE-04 B. Iodine-131

1. Total release Ci 3.20E-04 5.91E-04 4.39E-04 1.SOE-04 2.60E+Ol I

2. Average release rate for period uCi/sec 4.07E-05 7.52E-05 5.52E-05 2.27E-05

3. Percent of ODCM quarterly dose limit(*) % l.52E-01 l.55E-Ol l.56E-Ol l.65E-01 C. Particulates

1. Particulates with half-lives > 8 days Ci 5.43E-04 1.0SE-03 l.13E-03 7.98E-04 2.94E+Ol I

2. Average release rate for period µCi/sec 6.90E-05 l.34E-04 1.42E-04 l.OOE-04

3. Percent of ODCM quarterly dose limit (*) % 1.52E-01 1.55E-01 1.56E-01 l.65E-01 D. Tritium

1. Total release Ci 1.32E+OO l.52E+OO l.35E+OO 9.65E-01 7.56E+OO I

2. Average release rate for period µCi/sec 1.68E-01 1.93E-01 l.70E-01 1.21E-01

3. Percent of ODCM quarterly dose limit(*) % 1.52E-01 l.55E-01 1.56E-01 1.65E-01 E. Gross Alpha

1. Total release Ci <LLD <LLD <LLD <LLD 2.94E+Ol I

2. Average release rate for period µCi/sec O.OOE+OO O.OOE+OO 0.00E+OO O.OOE+OO

3. Percent of ODCM quarterly dose limit % NIA NIA NIA NIA F. Carbon-14

1. Total release Ci 3.73E+OO 3.73E+OO 3.77E+OO 3.1 IE+OO

2. Average release rate for period µCi/sec 4.74E-Ol 4.74E-Ol 4.74E-01 3.92E-01

(*): "Percent of ODCM quarterly dose limit" indicates combined total of Iodine-131, Particulates, and Tritium Page 8of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKETNUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear TABLE OF LOWER LIMITS OF DETECTABILITY FOR GASEOUS EFFLUENTS

1. FISSION I ACTIVATION GASES µCi/cc Kr-87 l.OOE-04 Kr-88 l.OOE-04 Xe-133 l.OOE-04 Xe-133m 1.00E-04 Xe-135 l.OOE-04 Xe-138 l.OOE-04

2. IODINES µCi/cc I-131 l.OOE-12 I-133 l.OOE-10

3. PARTICULATES µCi/cc Sr-89 l.OOE-11 Sr-90 l.OOE-11 Mn-54 l.OOE-11 Co-58 1.00E-11 Fe-59 l.OOE-11 Co-60 l.OOE-11 Zn-65 l.OOE-11 Mo-99 l.OOE-11 Cs-134 l.OOE-11 Cs-137 l.OOE-11 Ce-141 l.OOE-11 Ce-144 l.OOE-11

4. OTHER µCi/cc H-3 l.OOE-06 Gross Alpha l.OOE-11 The above values are the ODCM-required LLDs.

Page 9 of178

DRESDEN NUCLEAR POWER STATION

2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50~249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNITS 1,2,3 GROUND(*) GROUND RELEASES CONTINUOUS MODE Nuclides Released Unit 1st Quarter 2"d Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci <LLD <LLD <LLD 2.59E-07 2.59E-07 Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-85m Ci <LLD <LLD <LLD 3.61E-07 3.61E-07 Kr-87 Ci <LLD <LLD <LLD 2.llE-06 *2.llE-06 Kr-88 Ci <LLD <LLD <LLD 1.31E-06 1.31E-06 Xe-131m Ci <LLD <LLD <LLD 1.28E-08 l.28E-08 Xe-133 Ci <LLD <LLD <LLD 1.32E-07 l.32E-07 Xe-133m Ci <LLD <LLD <LLD l.06E-11 1.06E-11 Xe-135 Ci <LLD <LLD <LLD 2.06E-06 2.06E-06 Xe-135m Ci <LLD <LLD <LLD 4.37E-06 4.37E-06 Xe-138 Ci <LLD <LLD <LLD l.62E-05 l.62E-05 Total for period Ci <LLD <LLD <LLD 2.69E-05 2.69E-05

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD 5.18E-09 5.18E-09 Br-84 Ci <LLD <LLD <LLD 4.12E-1 l 4.12E-11 I-131 Ci <LLD <LLD <LLD l.46E-10 1.46E-10 I-132 Ci <LLD <LLD <LLD l.15E-10 l.15E-10 I-133 Ci <LLD <LLD <LLD 4.13E-10 4.13E-10 I-134 Ci <LLD <LLD <LLD l.93E-07 1.93E-07 I-135 Ci <LLD <LLD <LLD 2.87E-10 2.87E-10 Total for period Ci <LLD <LLD <LLD l.99E-07 l.99E-07

3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD. <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD 6.86E-08 6.86E-08 Mn-54 Ci <LLD <LLD <LLD l.18E-07 l.18E-07 Co-57 Ci <LLD <LLD <LLD l.61E-10 l.61E-10 Co-58 Ci <LLD <LLD <LLD 3.92E-08 3.92E-08 Fe-59 Ci <LLD <LLD <LLD 2.91E-08 2.91E-08 Co-60 Ci <LLD <LLD <LLD 3.65E-06 3.65E-06 Zn-65 Ci <LLD <LLD <LLD* 5.00E-08 5.00E-08 Nb-95 Ci <LLD <LLD <LLD 3.46E-09 3.46E-09 Zr-95 Ci <LLD <LLD <LLD 2.53E-09 2.53E-09 Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD 1.42E-08 1.42E-08 Sn-113 Ci <LLD <LLD <LLD 7.92E-10 7.92E-10 Sn-117m Ci <LLD <LLD <LLD 5.52E-09 5.52E-09 Te-123m Ci <LLD <LLD <LLD 5.69E-09 5.69E-09 Sb-124 Ci <LLD <LLD <LLD 7.42E-09 7.42E-09 Sb-125 Ci <LLD <LLD <LLD l.05E-09 l.05E-09 Page 10of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUALRADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci l.80E-05 l.80E-05 l.80E-05 l.80E-05 7.20E-05 Ba-140 Ci <LLD <LLD <LLD l.77E-09 l.77E-09 Ce-141 Ci <LLD <LLD <LLD 6.84E-12 6.84E-12 Ce-144 Ci <LLD <LLD <LLD 6.96E-10 6.96E-10 Hf-181 Ci <LLD <LLD <LLD 2.14E-10 2.14E-10 Total for period Ci l.80E-05 l.80E-05 l.80E-05 2.20E-05 7.60E-05

4. Tritium Total for period Ci <LLD <LLD <LLD 9.35E-06 9.35E-06

5. Gross Alpha Total for period Ci <LLD <LLD <LLD <LLD <LLD

6. Carbon-14 Total for period Ci <LLD <LLD <LLD <LLD <LLD

(*):The values in this table represent Unit !Main Turbine Floor and Unit 1 Fuel Building, Chemistry Laboratory Ventilation

Effluent, East Turbine Building Ventilation System, Units 2/3 Heating Steam System unmonitored effluents.

Page 11 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNITS 1,2,3 GROUND(**) GROUND RELEASES BATCH MODE Nuclides Released Unit 1st Quarter 2nd Quarter _3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci 3.54E-02 <LLD 3.54E-02 Kr-85 Ci <LLD <LLD <LLD Kr-85m Ci l.22E-Ol <LLD l.22E-01 Kr-87 Ci 2.27E-01 <LLD 2.27E Kr-88 Ci 3.37E-01 <LLD 3.37E-01 Xe-131m Ci <LLD <LLD <LLD Xe-133 Ci 7.28E-02 <LLD 7.28E-02 Xe-133m Ci <LLD <LLD <LLD Xe-135 Ci 8.66E-01 <LLD 8.66E~o1 Xe-135m Ci <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD Total for period Ci None(*) l.66E+OO None(*) <LLD .l.66E+OO

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD Br-84 Ci <LLD <LLD <LLD I-131 Ci <LLD <LLD <LLD I-132 Ci <LLD <LLD <LLD I-133 Ci <LLD <LLD <LLD I-134 Ci <LLD <LLD <LLD I-135 Ci <LLD <LLD <LLD Total for period Ci None(*) <LLD None(*) <LLD <LLD

3. Particulates Fe-55 Ci <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD Cr-51 Ci l.OlE-10 <LLD l.OlE-10 Mn-54 Ci l.29E-11 <LLD l.29E-11 Co-57 Ci <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD Co-60 Ci 5.94E-11 <LLD 5.94E-11 Zn-65 Ci <LLD <LLD <LLD Nb-95 Ci <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD Sn-113 Ci <LLD <LLD <LLD Sn-117m Ci <LLD <LLD <LLD Te-123m Ci <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD Page 12 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-23 7/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD Total for period Ci None(*) 1.74E-10 None(*) <LLD l.74E-10

4. Tritium Total for period Ci None(*) <LLD None(*) l.61E-04 l.61E-04

5. Gross Alpha Total for period Ci None(*) <LLD None(*) <LLD <LLD

.6. Carbon-14 Total for period Ci None(*) <LLD None(*) <LLD <LLD

(*):No batch releases via this effluent path during this time period.

(*'.!<.): The values in this table represent the Unit 3 Isolation Condenser Test unmonitored effluents and the abnormal release.

. effluents from the OGFB ventilation event.

Page 13 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 . Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 1 GROUND (*) GROUND RELEASES CONTINUOUS MODE Nuclides Released Unit 1 1* Quarter 2"d Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci NIA NIA NIA NIA NIA.

Kr-85 Ci NIA NIA NIA NIA . NIA Kr-85m Ci NIA NIA NIA NIA NIA Kr-87 Ci NIA NIA NIA NIA NIA Kr-88 Ci NIA NIA NIA NIA NIA Xe-131m Ci NIA NIA NIA NIA NIA Xe-133 Ci NIA NIA NIA NIA NIA Xe-133m Ci NIA NIA NIA NIA NIA Xe-135 Ci NIA NIA NIA NIA NIA Xe-135m Ci NIA *NIA NIA NIA NIA Xe-138 Ci NIA NIA NIA NIA NIA Total for period Ci None None None None None

2. Iodines and Halogens Br-82 Ci NIA NIA NIA NIA NIA Br-84 Ci NIA NIA NIA NIA NIA I-131 Ci NIA NIA NIA NIA NIA I-132 Ci NIA NIA NIA NIA NIA 1-133 Ci NIA NIA NIA NIA NIA 1-134 Ci NIA NIA NIA NIA NIA I-135 Ci NIA NIA NIA NIA NIA Total for period Ci None None None None None

3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD <LLD <LLD Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Nb-95 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD <LLD <LLD Sn-113 Ci <LLD <LLD <LLD <LLD <LLD Sn-117m Ci <LLD <LLD <LLD <LLD <LLD Te-123m Ci <LLD <LLD <LLD <LLD <LLD Page 14of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci l.80E-05 l.80E-05 l.80E-05 l.80E-05 7.20E-05 Ba-140 Ci <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci l.80E-05 l.80E-05 l.80E-05 l.80E-05 7.20E-05

4. Tritium Total for period Ci None None None None None

5. Gross Alpha Total for period Ci None None None None None

6. Carbon-14 Total for period Ci None None None None None

(*):The values in this table represent Unit lMain Turbine Floor and Unit 1 Fuel Building unmonitored effluent.

Page 15 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January* through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 1 GROUND (*) GROUND RELEASES BATCH MODE Nuclides Released Unit 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci I-131 Ci I-132 Ci I-133 Ci I-134 Ci I-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci A_g-llOm Ci Sn-113 Ci Sn-117m Ci Te-123m Ci Page 16of178

_J

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Sb-124 Ci Sb-125 Ci Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*) *

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

.(*):No batch releases via this effluent path Page 17of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 2 GROUND (*) GROUND RELEASES CONTINUOUS MODE 51 Nuclides Released Unit 1 Quarter 2nd Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci <LLD <LLD <LLD l.23E-07 l.23E-07 Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-85m Ci <LLD <LLD <LLD l.53E-07 l.53E-07 Kr-87 Ci <LLD <LLD <LLD 9.14E-07 9.14E-07 Kr-88 Ci <LLD <LLD <LLD 5.90E-07 5.90E-07 Xe-131m Ci <LLD <LLD <LLD 7.40E-10 7.40E-10 Xe-133 Ci <LLD <LLD <LLD 4.56E-08 4.56E-08 Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD 7.39E-07 7.39E-07 Xe-135m Ci <LLD <LLD <LLD l.45E-06 l.45E-06 Xe-138 Ci <LLD <LLD <LLD 5.64E-06 5.64E-06 Total for period Ci <LLD <LLD <LLD 9.66E-06 9.66E-06

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD l.33E-10 l.33E-10 Br-84 Ci <LLD <LLD <LLD 4.12E-11 4.12E-11 I-131 Ci <LLD <LLD <LLD <LLD <LLD I-132 Ci <LLD <LLD <LLD 1.26E-12 1.26E-12 I-133 Ci <LLD <LLD <LLD 2.66E-12 2.66E-12 I-134 Ci <LLD <LLD <LLD 3.80E-08 3.08E-08 I-135 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD <LLD 3.82E-08 3.82E-08

3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD 1.44E-08 l.44E-08 Mn-54 Ci <LLD <LLD <LLD 1.99E-08 l.99E-08 Co-57 Ci <LLD <LLD <LLD 2.31E-11 2.31E-11 Co-58 Ci <LLD <LLD <LLD 9.82E-09 9.82E-09 Fe-59 Ci <LLD <LLD <LLD 6.62E-09 6.62E-09 Co-60 Ci <LLD <LLD <LLD 3.40E-06 3.40E-06 Zn-65 Ci <LLD <LLD <LLD l.25E-08 1.25E-08 Nb-95 Ci <LLD <LLD <LLD 6.00E-10 6.00E-10 Zr-95 Ci <LLD <LLD <LLD 7.35E-10 7.35E-10 Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD 4.57E-09 4.57E-09 Sn-113 Ci <LLD <LLD <LLD 7.49E-ll 7.49E-11 Sn-117m Ci <LLD <LLD <LLD 2.49E-09 2.49E-09 Te-123m Ci <LLD <LLD <LLD 2.57E-09 2.57E-09 Sb-124 Ci <LLD <LLD <LLD 1.38E-09 l.38E-09 Sb-125 Ci <LLD <LLD <LLD 3.47E-12 3.47E-12 Page 18of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

-DOCKET NUMBERS: 50-010/50-237/50-249.

Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD 3.92E-10 3.92E-10 Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD l.28E-10 l.28E-10 Hf-181 Ci <LLD <LLD <LLD 2.03E-10 2.03E-10 Total for period Ci <LLD <LLD. <LLD 3.47E-06 3.47E-06

4. Tritium Total for period Ci None None None None None

5. Gross Alpha Total for period Ci None None None None None

6. Carbon-14 Total for period Ci None None None None None

(*): The values in this table represent Chemistry Laboratory Ventilation Effluent and East Turbine Building Ventilation System

. ,unmonitored, effluents. .

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DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 2 GROUND (**) GROUND RELEASES

BATCHMODE Nuclides Released Unit 1*t Quarter 2nd Quarter 3rd Quarter 4th Quarter ANNUAL.

1. Fission and Activation Gases Ar-41 Ci l.12E-02 l.12E-02 Kr-85 Ci <Lill <LLD Kr-85m Ci 4.0lE-02 4.0lE-02 Kr-87 Ci 5.31E-02 *5.31E-02 Kr-88 Ci 9.85E-02 9.85E-02 Xe-131m Ci <LLD . <LLD Xe-133 Ci 2.44E-02 2.44E-02 Xe-133m Ci <LLD <LLD Xe-135 Ci 2.22E-02 2.22E-02 Xe-135m Ci <LLD <LLD Xe-138 Ci <LLD <LLD Total for period Ci None(*) 4.49E-01 None(*) None(*) 4.49E-01

2. Iodines and Halogens Br-82 Ci <LLD <LLD Br-84 Ci <LLD <LLD 1-131 Ci <LLD <LLD 1-132 Ci <LLD <LLD 1-133 Ci <LLD <LLD I-134 Ci <LLD <LLD I-135 Ci <LLD <LLD Total for period Ci None(*) <LLD None(*) None(*) <LLD

3. Particulates Fe-55 Ci <LLD <LLD Sr-89 Ci <LLD <LLD Sr-90 Ci <LLD <LLD Cr-51 Ci 4.76E-11 4.76E-ll Mn-54 Ci 6.09E-12 6.09E-12 Co-57 Ci <LLD <LLD Co-58 Ci <LLD <LLD Fe-59 Ci <LLD <LLD Co-60 Ci 2.80E-11 2.80E-11 Zn-65 Ci <LLD <LLD Nb-95 Ci <LLD <LLD Zr-95 Ci <LLD <LLD Mo-99 Ci <LLD <LLD Ag-llOm Ci <LLD <LLD Sn-113 Ci <LLD <LLD Sn-117m Ci <LLD <LLD Te-123m Ci <LLD <LLD Sb-124 Ci <LLD <LLD Sb-125 Ci <LLD <LLD Page 20 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD Cs-137 Ci <LLD <LLD Ba-140 Ci <LLD <LLD Ce-141 Ci <LLD <LLD Ce-144 Ci <LLD <LLD Hf-181 Ci <LLD <LLD Total for period Ci None(*) 8.17E-11 None(*) None(*) 8.17E-11

4. Tritium Total for period . Ci None(*) <LLD None(*) None(*) <LLD

.5. Gross Alpha Total for period Ci None(*) <LLD None(*) None(*) <LLD

6. Carbon-14 Total for period Ci None(*) <LLD None(*) None(*) <LLD

(*):No batch releases via this effluent path during this time period .

. (**): The values in this table represent the abnormal release via the OGFB.

Page 21 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 3 GROUND (*) GROUND RELEASES CONTINUOUS MODE 81 Nuclides Released Unit 1 Quarter 2nd Quarter 3nl Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci <LLD <LLD <LLD l.36E-07

l.36E-07 Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-85m Ci <LLD <LLD <LLD 2.08E-07 2.08E-07 Kr-87 Ci <LLD <LLD <LLD l.20E-06 l.20E-06 Kr-88 Ci <LLD <LLD <LLD 7.18E-07 7.18E-07 Xe-131m Ci <LLD <LLD <LLD l.21E-08 1.21E-08 Xe-133 Ci <LLD <LLD <LLD 8.66E-08 8.66E-08 Xe-133m Ci <LLD <LLD <LLD l.06E-11 l.06E-11

Xe-135 Ci <LLD <LLD <LLD l.32E-06 l.32E-06 Xe-135m Ci <LLD <LLD <LLD 2.92E-06 2.92E-06 Xe-138 Ci <LLD <LLD <LLD l.06E-05 l.06E-05 Total for period Ci <LLD <LLD <LLD 1.72E-05 l.72E-05

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD 5.05E-09 5.05E-09 Br-84 Ci <LLD <LLD <LLD <LLD <LLD I-131 Ci <LLD <LLD <LLD l.46E-10 l.46E-10 I-132 Ci <LLD <LLD <LLD l.14E-10 l.14E-10 I-133 Ci <LLD <LLD <LLD 4.lOE-10 4.lOE-10 I-134 Ci <LLD <LLD <LLD l.55E-07 l.55E-07 I-135 Ci <LLD <LLD <LLD 2.87E-10 2.87E-10 Total for period Ci <LLD <LLD <LLD l.61E-07 l.61E-07

3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD 5.42E-08 5.42E-08 Mn"54 Ci <LLD <LLD <LLD 9.76E-08 9.76E-08 Co-57 Ci <LLD <LLD <LLD l.38E-10 l.38E-10 Co-58 Ci <LLD <LLD <LLD 2.94E-08 2.94E-08 Fe-59 Ci <LLD <LLD <LLD 2.25E-08 2.25E-08 Co-60 Ci <LLD <LLD <LLD 2.51E-07 2.51E-07 Zn-65 Ci <LLD <LLD <LLD 3.75E-08 3.75E-08 Nb-95 Ci <LLD <LLD <LLD 2.86E-09 2.86E-09 Zr-95 Ci <LLD <LLD <LLD l.79E-09 l.79E-09 Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD 9.64E-09 9.64E-09 Sn-113 Ci <LLD <LLD <LLD 7.17E-10 7.17E-10 Sn-117m Ci <LLD <LLD <LLD 3.03E-09 3.03E-09 Te-123m Ci <:LLD <LLD <LLD 3.12E-09 3.12E-09 Sb-124 Ci <LLD <LLD <LLD 6.04E-09 6.04E-09 Page 22 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKETNUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Sb-125 Ci <LLD <LLD <LLD 1.0SE-09 1.0SE-09 Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD 1.38E-09 1.38E-09 Ce-141 Ci <LLD <LLD <LLD 6.84E-12 6.84E-12 Ce-144 Ci <LLD <LLD <LLD 5.68E-10 5.68E-10 Hf-181 Ci <LLD <LLD <LLD l.lOE-11 1.lOE-12 Total for period Ci <LLD <LLD <LLD 5.23E-07 5.23E-07

4. Tritium Total for period Ci <LLD <LLD <LLD 9.35E-06

9.35E-06

,5. Gross Alpha Total for period Ci None None None None None

6. Carbon-14 Total for period Ci None None None None None.

- (*:):The values in this table represent Chemistry Laboratory Ventilation Effluent and Units 2/3 Heating Steam unmonitored .

effluents.

Page 23 of 178 I

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January, through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 3 GROUND (**) GROUND RELEASES BATCH MODE Nuclides Released Unit 1st Quarter 2°d Quarter 3rd Quarter 4th Quarter ANNUAL.

1. Fission and Activation Gases Ar-41 Ci 2.42E-02 <LLD 2.42E-02 Kr-85 Ci <LLD <LLD <LLD Kr-85m Ci 8.21E-02 <LLD 8.21E-02 Kr-87 Ci l.74e-01 <LLD l.74e-01 Kr-88 Ci 2.39e-01 <LLD 2.39e-01 Xe-131m Ci <LLD <LLD <LLD Xe-133 Ci 4.84E-02 <LLD 4.84E-02 Xe-133m Ci <LLD <LLD <LLD Xe-135 Ci 6.44E-01 <LLD 6.44E-01 Xe-135m Ci <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD Total for period Ci None.(*) l.21E+OO None(*) <LLD l.21E+OO

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD Br-84 Ci <LLD <LLD <LLD I-131 Ci <LLD <LLD <LLD I-132 Ci <LLD <LLD <LLD I-133 Ci <LLD <LLD <LLD I-134 Ci <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD Total for period Ci None(*) <LLD None(*) <LLD <LLD

3. Particulates Fe-55 Ci <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD Cr-51 Ci 5.36E-ll <LLD 5.36E-ll Mn-54 Ci 6.86E-12 <LLD 6.86E-12 Co-57 Ci <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD Co-60 Ci 3.15E-11 <LLD 3.15E-11 Zn-65 Ci <LLD <LLD <LLD Nb-95 Ci <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD Sn-113 Ci <LLD <LLD <LLD Sn-117m Ci <LLD <LLD <LLD Te-123m Ci <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD Page 24 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-23 7/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Sb-125 Ci <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD Total for period Ci None(*) 9.20E-11 None(*) <LLD 9.20E-11

4. Tritium Total for period Ci None(*) None(*) None(*) l.61E-04 l.61E-04

5. Gross Alpha Total for period Ci None(*) None(*) None(*) <LLD <LLD

6. Carbon-14 Total for period Ci None(*) None(*) None(*) <LLD <LLD

. (*}:No batch releases via this effluent path during this time period.

(*n: The values in this table represent the Unit 3 Isolation Condenser Test unmonitored effluents and the abnormal release via

.th~ OGFB.

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DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNITS 1,2,3 MAIN CHIMNEYS ELEVATED RELEASES CONTINUOUS MODE Nuclides Released Unit 1st Quarter 2"d Quarter 3rd Quarter 4th Quarter ANNUAL I. Fission and Activation Gases Ar-41 Ci l.28E+OO 7.83E-01 7.22E-01 6.72E-01 3.46E+OO Kr-85 Ci <LLD <LLD <LLD 1.21E-03 1.21E-03 Kr-85m Ci 4.03E-01 3.19E-01 3.12E-01 1.51E-01 l.18E+OO Kr-87 Ci 3.24E-01 3.34E-01 3.13E-01 2.25E-01 l.20E+OO Kr-88 Ci 2.74E-01 2.35E-01 2.42E-01 1.48E-01 8.98E-01 Xe-131m Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci 9.47E-Ol 8.15E-01 6.68E+OO 6.14E+OO l.46E+Ol Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci 6.16E-01 l.87E+OO 1.56E+OO 2.02E-01 4.25E+OO Xe-135m Ci l.93E+OO l.91E+OO 1.92E+OO 1.27E+OO 7.02E+OO Xe-138 Ci 7.96E+OO 7.92E+OO 7.92E+OO 4.18E+OO 2.80E+Ol Total for period Ci l.37E+Ol 1.42E+Ol l.97E+Ol 1.30E+Ol 6.06E+Ol

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD <LLD <LLD Br-84 Ci <LLD <LLD <LLD <LLD <LLD I-131 Ci 4.20E-04 6.71E-04 5.07E-04 2.56E-04 1.85E-03 I-132 Ci <LLD <LLD <LLD <LLD <LLD I-133 Ci 2.08E-03 3.86E-03 3.15E-03 1.46E-03 1.05E-02 I-134 Ci <LLD <LLD <LLD <LLD <LLD I-135 Ci 7.77E-04 3.39E-03 l.86E-03 5.95E-04 6.62E-03 Total for period Ci 3.27E-03 7.92E-03 5.51E-03 2.32E-03 l.90E-02

3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci 9.36E-05 7.58E-05 5.49E-05 4.90E-05 2.73E-04 Sr-90 Ci <LLD <LLD <LLD 2.71E-05 2.71E-05 Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci 4.25E-05 8.46E-05 7.95E-05 9.48E-05 3.0IE-04 Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci 3.62E-05 5.31E-05 1.15E-04 6.93E-05 2.73E-04 Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 2.31E-04 3.92E-04 3.80E-04 5.47E-04 1.55E-03 Zn-65 Ci l.32E-04 3.28E-04 4.22E-04 2.16E-04 l.lOE-03 Nb-95 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD 4.60E-06 2.28E-05 2.90E-06 3.03E-05 Sn-113 Ci <LLD <LLD <LLD <LLD <LLD Sn-117m Ci 9.93E-06 7.28E-06 3.05E-05 l.37E-05 6.14E-05 Page 26 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Te-123m Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD. <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD 1.34E-05 l.34E-05 Ba-140 Ci 1.60E-04 2.39E-04 1.82E-04 l.30E-04 7.llE-04 Ce-141 Ci <LLD <LLD <LLD <LLD <LLD

- Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 7.04E-04 l.18E-03 1.29E-03 1.16E-03 4.34E-03

4. Tritium Total for period Ci l.44E+OO l.24E+OO l.09E+OO 9.75E-01 4.75E+OO

5. Gross Alpha Total for period Ci <LLD <LLD <LLD <LLD <LLD

6. Carbon-14 Total for period Ci 7.46E+OO 7.46E+OO 7.54E+OO 6.88E+OO 2.93E+Ol Page 27 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNITS 1,2,3 MAIN CHIMNEYS(*) ELEVATED RELEASES BATCH MODE 1

Nuclides Released Unit 1* Quarter 2nd Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci I-131 Ci I-132 Ci I-133 Ci I-134 Ci I-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci Ag-llOm Ci Sn-113 Ci Sn-117m Ci Page 28 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Te-123m Ci Sb-124 Ci Sb-125 Ci Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*): No batch releases via this effluent path Page 29 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 1 MAIN CHIMNEY(*) ELEVATED RELEASES CONTINUOUS MODE Nuclides Released Unit 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci I-131 Ci I-132 Ci I-133 Ci I-134 Ci I-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Co-57 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci Ag-llOm Ci Sn-113 Ci Sn-117m Ci Te-123m Ci Page 30 of 178

~

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through D.ecember 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Sb-124 Ci Sb-125 Ci Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*):No continuous releases via this effluent path Page 31of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 1 MAIN CHIMNEY (*) ELEVATED RELEASES BATCH MODE Nuclides Released Unit 1st Quarter 2°d Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci I-131 Ci I-132 Ci I-133 Ci I-134 Ci I-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci A,g-llOm Ci Sn-113 Ci Sn-117m Ci Te-123m Ci Sb-124 Ci Sb-125 Ci Page 32 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci

Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path Page 33of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 2 MAIN CHIMNEY ELEVATED RELEASES CONTINUOUS MODE Nuclides Released Unit 1st Quarter 2°d Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci 4.31E-02 l.17E-01 5.17E-02 4.0IE-02 2.52E-01 Kr-85 Ci <LLD <LLD <LLD 5.79E-04 5.79E-04 Kr-85m Ci l.77E-02 2.65E-02 2.35E-02 2.05E-02 8.82E-02 Kr-87 Ci l.05E-01 l.17E-01 l.1 IE-01 l.12E-01 4.44E-01 Kr-88 Ci 6.28E-02 6.39E-02 6.79E-02 6.48E-02 2.59E-01 Xe-131m Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci 2.llE-02 6.05E-02 1.63E+OO 2.74E+OO 4.45E+OO Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci 1.53E-Ol 4.86E-01 4.56E-01 9.23E-02 l.19E+OO Xe-135m Ci 4.53E-01 4.76E-01 5.07E-01 5.34E-01 l.97E+OO Xe-138 Ci l.99E+OO 2.12E+OO 2.20E+OO 1.40E+OO 7.71E+OO Total for period Ci 2.85E+OO 3.47E+OO 5.04E+OO 5.00E+OO l.64E+Ol

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD <LLD <LLD Br-84 Ci <LLD <LLD <LLD <LLD <LLD I-131 Ci l.OOE-04 7.96E-05 6.79E-05 7.75E-05 3.25E-04 I-132 Ci <LLD <LLD <LLD <LLD <LLD I-133 Ci 4.81E-04 4.57E-04 4.19E-04 4.0IE-04 l.76E-03 I-134 Ci <LLD <LLD <LLD <LLD <LLD I-135 Ci l.33E-04 3.98E-04 2.55E-04 1.58E-04 9.44E-04 Total for period Ci 7.15E-04 9.35E-04 7.42E-04 6.36E-04 3.03E-03

3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci 2.46E-05 8.97E-06 7.24E-06 2.74E-05 6.82E-05 Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci 9.56E-06 l.05E-05 l.03E-05 3.40E-05 6.44E-05 Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci 9.15E-06 6.40E-06 l.49E-05 l.64E-05 4.68E-05 Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 5.71E-05 4.59E-05 4.98E-05 2.07E-04 3.60E-04 Zn-65 Ci 3.02E-05 3.83E-05 5.51E-05 6.61E-05 l.90E-04 Nb-95 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD 5.22E-07 2.76E-06 l.56E-06 4.84E-06 Sn-113 Ci <LLD <LLD <LLD <LLD <LLD Sn-117m Ci l.41E-06 8.26E-07 4.03E-06 6.81E-06 l.31E-05 Te-123m Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD <LLD Page 34of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD 7.19E-06 7.19E-06 Ba-140 Ci 3.82E-05 2.87E-05 2.35E-05 2.39E-05 l.14E-04 Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci l.70E-04 1.40E-04 l.68E-04 3.90E-04 8.68E-04

4. Tritium Total for period Ci 3.60E-Ol 1.47E-01 1.49E-01 2.87E-01 9.43E-Ol

5. Gross Alpha Total for period Ci <LLD <LLD <LLD <LLD <LLD 6~ Carbon-14 Total for period Ci 3.73E+OO 3.73E+OO 3.77E+OO 3.77E+OO 1.50E+Ol Page 35 of 178

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DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT R:ELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 2 MAIN CHIMNEY (*) ELEVATED RELEASES BATCH MODE Nuclides Released Unit 1st Quarter 211d Quarter 3rd Quarter 4th Quarter ANNUAL

i. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci I-131 Ci I-132 Ci I-133 Ci I-134 Ci I-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci A.g-llOm Ci Sn-113 Ci Sn-117m Ci Te-123m Ci Sb-124 Ci Sb-125 Ci Page 36 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVEEFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path Page 37 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 3 MAIN CHIMNEY ELEVATED RELEASES CONTINUOUS MODE Nuclides Released Unit 1st Quarter 2°ct Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci l.24E+OO 6.66E-01 6.70E-01 6.32E-01 3.20E+OO Kr-85 Ci <LLD <LLD <LLD 6.31E-04 6.31E-04 Kr-85m Ci 3.85E-01 2.92E-01 2.88E-01 l.30E-01 l.lOE+OO Kr-87 Ci 2.19E-01 2.17E-01 2.02E-01 l.14E-01 7.51E-01 Kr-88 Ci 2.1 lE-01 l.71E-01 l.74E-01 8.27E-02 6.39E-01 Xe-131m Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci 9.26E-01 7.54E-01 5.05E+OO 3.40E+OO l.OlE+Ol Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci 4.63E-01 l.38E+OO 1.llE+OO l.lOE-01 3.06E+OO Xe-135m Ci l.48E+OO 1.43E+OO 1.41E+OO 7.34E-01 5.05E+OO Xe-138 Ci 5.97E+OO 5.80E+OO 5.72E+OO 2.78E+OO 2.03E+Ol Total for period Ci l.09E+Ol 1.07E+Ol l.46E+Ol 7.99E+OO 4.42E+Ol

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD <LLD <LLD Br-84 Ci <LLD <LLD <LLD <LLD <LLD I-131 Ci 3.20E-04 5.91E-04 4.39E-04 l.78E-04 l.53E-03 I-132 Ci <LLD <LLD <LLD <LLD <LLD I-133 Ci l.60E-03 3.40E-03 2.73E-03 l.06E-03 8.97E-03 I-134 Ci <LLD <LLD <LLD <LLD <LLD I-135 Ci 6.44E-04 2.99E-03 1.60E-03 4.37E-04 5.67E-03 Total for period Ci 2.56E-03 6.98E-03 4.77E-03 l.68E-03 l.60E-02

3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci 6.90E-05 6.68E-05 4.77E-05 2.16E-05 2.05E-04 Sr-90 Ci <LLD <LLD <LLD 2.71E-05 2.71E-05 Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci 3.29E-05 7.41E-05 6.29E-05 6.08E-05 2.37E-04 Co-58 Ci 2.70E-05 4.67E-05 9.99E-05 5.29E-05 2.27E-04 Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci l.74E-04 3.46E-04 3.31E-04 3.41E-04 l.19E-03 Zn-65 Ci l.02E-04 2.89E-04 3.67E-04 l.50E-04 9.08E-04 Nb-95 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD 4.08E-06 2.00E-05 l.34E-06 2.54E-05 Sn-113 Ci <LLD <LLD <LLD <LLD <LLD Sn-117m Ci 8.52E-06 6.45E-06 2.65E-05 6.89E-06 4.83E-05 Te-123m Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD <LLD Page 38 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD 6.21E-06 6.21E-06 Ba-140 Ci l.21E-04 2.lOE-04 1.59E-04 1.06E-04 5.97E-04 Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 5.34E-04 1.04E-03 l.12E-03 7.74E-04 3.47E-03

4. Tritium Total for period Ci l.08E+OO 1.lOE+OO 9.42E-01 6.88E-Ol 3.81E+OO

5. Gross Alpha Total for period Ci <LLD <LLD <LLD <LLD <LLD

6. Carbon-14 Total for period Ci 3.73E+OO 3.73E+OO 3.77E+OO 3.llE+OO l.43E+Ol Page 39 of 178

DRESDEN NUCLEAR POWER STATION

. 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 3 MAIN CHIMNEY (*) ELEVATED RELEASES BATCH MODE Nuclides Released Unit 1st Quarter 2"d Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period ' Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci 1-131 Ci 1-132 Ci 1-133 Ci 1-134 Ci 1-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-57 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci Ag-llOm Ci Sn-113 Ci Sn-117m Ci Te-123m Ci Sb-124 Ci Sb-125 Ci Page 40 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237150-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path Page 41of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNITS 1,2,3 (*) MIXED MODE RELEASES CONTINUOUS MODE Nuclides Released Unit 1st Quarter 2"ct Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activati9n Gases Ar-41 Ci <LLD <LLD <LLD <LLD <LLD Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-85m Ci <LLD <LLD <LLD <LLD <LLD Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD Xe-131m Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD <LLD l.27E+OO l.27E+OO Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD

. Xe-135m Ci <LLD <LLD 6.66E-06 <LLD 6.66E-06 Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD 6.66E-06 1.27E+OO 1.27E+OO

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD <LLD <LLD Br-84 Ci <LLD <LLD <LLD <LLD <LLD I-131 Ci <LLD <LLD <LLD 3.38E-06 3.38E-06 I-132 Ci <LLD <LLD <LLD <LLD <LLD I-133 Ci <LLD <LLD <LLD 3.65E-06 3.65E-06 I-134 Ci <LLD <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD <LLD 7.03E-06 7.03E-06

3. Particulates Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD 5.56-06 5.56E-06 Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci l.84E-05 l.30E-05 8.17E-06 3.90E-05 7.86E-05 Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Nb-95 Ci <LLD* <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD <LLD <LLD Sn-113 Ci <LLD <LLD <LLD <LLD <LLD Sn-117m Ci <LLD <LLD <LLD <LLD <LLD Te-123m Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD <LLD Page 42 of 178

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DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-23 7/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci l.84E-05 1.30E-05 8.17E-06 4.46E-05 8.42E-05

4. Tritium Total for period Ci 3.18E-01 4.77E-01 4.73E-01 4.82E-01 1.75E+OO

5. Gross Alpha Total for period Ci <LLD <LLD <LLD <LLD <LLD

6. Carbon-14 Total for period Ci <LLD <LLD <LLD <LLD <LLD

(*):Units 1,2,3 mixed modes releases include Unit 1 Chemical Cleaning Building, Unit 2 Reactor Building Vent and Unit 3 Reactor Building Vent.

Page 43 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNITS 1,2,3 (*) MIXED MODE RELEASES BATCH MODE 51 Nuclides Released Unit 1 Quarter 2"d Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci I-131 Ci I-132 Ci I-133 Ci I-134 Ci I-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci Ag-llOm Ci Sn-113 Ci Sn-117m Ci Te-123m Ci Sb-124 Ci Sb-125 Ci Page 44 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Caibon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*):Units 1,2,3 mixed modes releases include Unit 1 Chemical Cleaning Building, Unit_2 Reactor Building Vent and Unit 3 Reactor Building Vent. No batch releases via these effluent paths.

Page 45of178

DRESDEN NUCLEAR POWER STATION

. 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010150-237150-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 1 CHEMICAL CLEANING BUILDING MIXED MODE RELEASES CONTINUOUS MODE Nuclides Released Unit 1st Quarter 2"d Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci NIA NIA NIA NIA NIA Kr-85 Ci NIA NIA NIA NIA NIA Kr-85m Ci NIA NIA NIA NIA NIA Kr-87 Ci NIA NIA NIA NIA NIA Kr-88 Ci NIA NIA NIA NIA NIA Xe-131m Ci NIA NIA NIA NIA NIA Xe-133 Ci NIA NIA NIA NIA NIA Xe-133m Ci NIA NIA NIA NIA NIA Xe-135 Ci NIA NIA NIA NIA NIA Xe-135m Ci NIA NIA NIA NIA NIA Xe-138 Ci NIA NIA NIA NIA NIA Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD <LLD <LLD Br-84 Ci <LLD <LLD <LLD <LLD <LLD 1-131 Ci <LLD <LLD <LLD <LLD <LLD 1-132 Ci <LLD <LLD <LLD <LLD <LLD 1-133 Ci <LLD <LLD <LLD <LLD <LLD 1-134 Ci <LLD <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD <LLD <LLD <LLD

3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD <LLD <LLD Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 8.46E-07 5.95E-07 l.03E-06 4.lOE-07 2.88E-06 Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Nb-95 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD <LLD <LLD Sn-113 Ci <LLD <LLD <LLD <LLD <LLD Sn-117m Ci <LLD <LLD <LLD <LLD <LLD Te-123m Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD <LLD Page 46 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 8.46E-07 5.95E-07 1.03E-06 4.lOE-07 2.88E-06

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5; Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6: Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*): Analysis not required per Dresden Station ODCM Page 47 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 1 CHEMICAL CLEANING BUILDING(*) MIXED MODE RELEASES BATCIIMODE Nuclides Released Unit 1st Quarter 2"d Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-13lm Ci Xe-133 Ci -

Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci I-131 Ci I-132 Ci I-133 Ci I-134 Ci I-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci Ag-llOm Ci Sn-113 Ci Sn-117m Ci Te-123m Ci Sb-124 Ci Sb-125 Ci Page 48 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path

. Page 49of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 2 REACTOR BUILDING VENT MIXED MODE RELEASES CONTINUOUS MODE Nuclides Released Unit 81 1 Quarter 2nd Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci <LLD <LLD <LLD <LLD <LLD Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-85m Ci <LLD <LLD <LLD <LLD <LLD Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD Xe-131m Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD <LLD 5.04E-01 5.04E-01 Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD Xe-135m Ci <LLD <LLD l.86E-06 <LLD l.86E-06 Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD 1.86E-06 5.04E-01 5.04E-01

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD <LLD <LLD Br-84 Ci <LLD <LLD <LLD <LLD <LLD I-131 Ci <LLD <LLD <LLD l.33E-06 l.33E-06 I-132 Ci <LLD <LLD <LLD <LLD <LLD I-133 Ci <LLD <LLD <LLD <LLD <LLD I-134 Ci <LLD <LLD <LLD <LLD <LLD I-135 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD <LLD l.33E-06 l.33E-06

3. Particulates Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD 2.98E-06 2.98E-06 Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 8.82E-06 4.07E-06 3.20E-07 1.77E-05 3.09E-05 Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Nb-95 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD <LLD <LLD Sn-113 Ci <LLD <LLD <LLD <LLD <LLD Sn-117m Ci <LLD <LLD <LLD <LLD <LLD Te-123m Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD <LLD Page 50 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 8.82E-06 4.07E-06 3.20E-07 2.07E-05 3.39E-05

4. Tritium Total for period Ci 7.55E-02 5.69E-02 6.22E-02 2.06E-01 4.00E-01

5. Gross Alpha Total for period Ci <LLD <LLD <LLD <LLD <LLD

6. Carbon-14 Total for period Ci <LLD <LLD <LLD <LLD <LLD Page 51of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 2 REACTOR BUILDING VENT (*) MIXED MODE RELEASES BATCH MODE Nuclides Released Unit 1st Quarter. 2nd Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci I-131 Ci I-132 Ci I-133 Ci I-134 Ci I-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci Ag-llOm Ci Sn-113 Ci Sn-117m Ci Te-l23m Ci Sb-124 Ci Sb-125 Ci Page 52 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path Page 53 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 3 REACTOR BUILDING VENT MIXED MODE RELEASES CONTINUOUS MODE Nuclides Released Unit 1st Quarter 2°d Quarter 3rd Quarter 4th Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci <LLD <LLD <LLD <LLD <LLD Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-85m Ci <LLD <LLD <LLD <LLD <LLD Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD Xe-131m Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD <LLD 7.66E-01 7.66E-01 Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD Xe-135m Ci <LLD <LLD 4.80E-06 <LLD 4.80E-06 Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD 4.80E-06 7.66E-01 7.66E-01

2. Iodines and Halogens Br-82 Ci <LLD <LLD <LLD <LLD <LLD Br-84 Ci <LLD <LLD <LLD <LLD <LLD I-131 Ci <LLD <LLD <LLD 2.05E-06 2.05E-06 I-132 Ci <LLD <LLD <LLD <LLD <LLD I-133 Ci <LLD <LLD <LLD 3.65E-06 3.65E-06 I-134 Ci <LLD <LLD <LLD <LLD <LLD I-135 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD <LLD 5.70E-06 5.70E-06

3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD 2.58E-06 2.58E-06 Co-57 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 8.75E-06 8.36E-06 6.82E-06 2.09E-05 4.48E-05 Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Nb-95 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD <LLD <LLD Sn-113 Ci <LLD <LLD <LLD <LLD <LLD Sn-117m Ci <LLD <LLD <LLD <LLD <LLD Te-123m Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Sb-125 Ci <LLD <LLD <LLD <LLD <LLD Page 54 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Hf-181 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 8.75E-06 8.36E-06 6.82E-06 2.35E-05 4.74E-05

4. Tritium Total for period Ci 2.43E-01 4.20E-01 4.llE-01 2.76E-01 1.35E+OO

5. Gross Alpha Total for period Ci <LLD <LLD <LLD <LLD <LLD

6. Carbon-14 Total for period Ci <LLD <LLD <LLD <LLD <LLD Page 55 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKETNUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear GASEOUS EFFLUENTS UNIT 3 REACTOR BUILDING VENT (*) MIXED MODE RELEASES BATCHMODE Nuclides Released Unit 1st Quarter 2"d Quarter 3rd Quarter 4t11 Quarter ANNUAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-131m Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

2. Iodines and Halogens Br-82 Ci Br-84 Ci I-131 Ci I-132 Ci I-133 Ci I-134 Ci I-135 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

3. Particulates Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Nb-95 Ci Zr-95 Ci Mo-99 Ci Ag-llOm Ci Sn-113 Ci Sn-117m Ci Te-123m Ci Sb-124 Ci Sb-125 Ci Cs-134 Ci Page 56 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Hf-181 Ci Total for period Ci None(*) None(*) None(*) None(*) None(*)

4. Tritium Total for period Ci None(*) None(*) None(*) None(*) None(*)

5. Gross Alpha Total for period Ci None(*) None(*) None(*) None(*) None(*)

6. Carbon-14 Total for period Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path Page 57 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear UNITS 1,2,3 (*) LIQUID EFFLUENTS SUMMATION OF ALL RELEASES l st 2nd 3rd 4th Est. Total Units Quarter Quarter Quarter Quarter Error,%

A. Fission and activation products

1. Total release (not including H-3, gases, alpha) Ci <LLD <LLD <LLD <LLD l.95E+Ol I

2. Average diluted concentration during period µCi/ml O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of aoolicable dose limit - organ % (**) NIA NIA NIA NIA B Tritium

1. Total release Ci 7.95E-02 9.78E-02 9.98E-02 9.90E-02 2.37E+OO I

2. Average diluted concentration during period µCi/ml 2.04E-11 4.22E-11 4.21E-11 4.18E-11

3. Percent of applicable dose limit - whole body % (**) 1.94E-05 2.38E-05 2.43E-05 2.41E-05 c D "ve lSSO l dand entrame

' d gases

1. Total release Ci <LLD <LLD <LLD <LLD 2.03E+Ol I

2. Average diluted concentration during period µCi/ml O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of applicable dose limit - organ % (**) NIA NIA NIA NIA D. Gross alpha activity I 1. Total release Ci <LLD <LLD <LLD <LLD 2.00E+Ol IE. Volume of waste released (prior to dilution) Liters l.64E+07 4.96E+06 5.01E+06 5.0IE+06 I F. Volume of dilution water used during period Liters 3.89E+12 2.32E+12 2.37E+12 2.37E+12

(*): The values in these tables include Storm Sewer System and Sewage Treatment System unmonitored effluent path.

(**): These percentages are calculated referencing the quarterly "per unit" limits Page 58 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPO RT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 L icensee: Exelon Nuclear UNIT 1 (*) LIQUID EFFLUENTS SUMMATION OF ALL RELEASES l st 2nd 3rd 4th Est. Total Units Quarter Quarter Quarter Quarter Error,%

A. Fission and activation roducts Ci <LLD <LLD <LLD <LLD 1.95E+Ol

µCi/ml O.OOE+OO O.OOE+OO O.OOE+00 O.OOE+OO

% NIA NIA N IA NIA B. Tritium

1. Total release Ci l.39E-02 <LLD <LLD <LLD 2.37E+OO

2. Avera e diluted concentration durin eriod u,Ci/ml 9.lOE-12 O.OOE+OO O.OOE+00 O.OOE+OO

% 3.41E-06 O.OOE+OO O.OOE+00 0.00E+OO C .... Dissolved and entrained ases

1. Total release Ci <LLD <LLD <LLD <LLD 2.03E+Ol u,Ci/ml O.OOE+OO O.OOE+OO O.OOE+00 O.OOE+OO

% NIA NIA N IA NIA D. Gross alpha activity I 1. Total release Ci <LLD <LLD <LLD I <LLD I 2.00E+Ol I I E. Volume of waste released (prior to dilution) Liters l.14E+07 NIA NIA NIA I F. Volume of dilution water used during period Liters 1.53E+12 NIA NIA NIA

(*): The values in this these tables include the Sewage Treatment unmonitored effluent path.

Page 59 ofl78

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear UNIT 2 (*) LIQUID EFFLUENTS SUMMATION OF ALL RELEASES l st 2 nd 3 rd 4th Est. Total Units Quarter Quarter Quarter Quarter Error,%

A. Fission and activation products

1. Total release (not including H-3, gases, alpha) Ci <LLD <LLD <LLD <LLD l.95E+Ol I

2. Average diluted concentration during period µCi/ml O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of applicable dose limit - organ % NIA NIA NIA NIA B. Tritium

1. Total release Ci 3.28E-02 4.89E-02 4.99E-02 4.95E-02 2.37E+OO I

2. Average diluted concentration during period µCi/ml 2.77E-11 4.22E-11 4.21E-11 4.lSE-11

3. Percent of applicable dose limit - whole body % 7.99E-06 l.19E-05 l.22E-05 1.21E-05 c D "ve 1sso l dand entrame "d gases

1. Total release Ci <LLD <LLD <LLD <LLD 2.03E+Ol I

2. Average diluted concentration during period µCi/ml O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of applicable dose limit - organ % NIA NIA NIA NIA D. Gross alpha activity I 1. Total release Ci <LLD <LLD <LLD <LLD 2.00E+Ol IE. Volume of waste released (prior to dilution) Liters 2.48E+06 2.48E+06 2.51E+06 2.51E+06 IF. Volume of dilution water used during period Liters l.18E+12 l.16E+12 l.18E+12 l.18E+12

(*):The values in these tables include the Storm Sewer System unmonitored effluent path. The Storm Sewer System is 50%

allocated to Unit 2.

Page 60 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear UNIT 3 (*) LIQUID EFFLUENTS SUMMATION OF ALL RELEASES l st 2nd 3 rd 4th Est. Total Units Quarter Quarter Quarter Quarter Error,%

A. Fission and activation products

1. Total release (not including H-3, gases, aloha) Ci <LLD <LLD <LLD <LLD l.95E+Ol I

2. Average diluted concentration during period µCi/ml O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of annlicable dose limit - organ % NIA NIA NIA NIA B. Tritium

1. Total release Ci 3.28E-02 4.89E-02 4.99E-02 4.95E-02 2.37E+OO I

2. Average diluted concentration during period u,Cilml 2.77E-ll 4.22E-11 4.21E-ll 4.18E-11

3. Percent of aoolicable dose limit - whole body % 7.99E-06 l.19E-05 l.22E-05 l.21E-05 c D "ve lSSO l dand entrame "d gases

1. Total release Ci <LLD <LLD <LLD <LLD 2.03E+Ol I

2. Average diluted concentration during period u,Ci/ml O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO

3. Percent of aoolicable dose limit - organ % NIA NIA NIA NIA D. Gross alpha activity I 1. Total release Ci <LLD <LLD <LLD <LLD 2.00E+Ol IE. Volume of waste released (Qrior to dilution) Liters 2.48E+06 2.48E+06 2.51E+06 2.51E+06 I F. Volume of dilution water used during period Liters l.18E+12 l.16E+12 l.18E+12 l.18E+12

(*): The values in these tables include the Storm Sewer System unmonitored effluent path. The Storm Sewer System is 50% allocated to Unit 3.

Page 61 ofl 78

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear TABLE OF LOWER LIMITS OF DETECTABILITY FOR LIQUID EFFLUENTS

1. FISSION/ACTIVATION GASES µCi/ml Kr-87 l.OOE-05 Kr-88 l.OOE-05 Xe-133 l.OOE-05 Xe-133m l.OOE-05 Xe-135 l.OOE-05 Xe-138 l.OOE-05

2. IODINES µCi/ml I-131 l.OOE-06

3. PARTICULATES µCi/ml Fe-55 l.OOE-06 Sr-89 5.00E-08 Sr-90 5.00E-08 Mn-54 5.00E-07 Co-58 5.00E-07 Fe-59 5.00E-07 Co-60 5.00E-07 Zn-65 5.00E-07 Mo-99 5.00E-07 Cs-134 5.00E-07 Cs-137 5.00E-07 Ce-141 5.00E-07 Ce-144 5.00E-06

4. OTHER µCi/ml H-3 l.OOE-05 Gross Alpha l.OOE-07 The above values are the ODCM-required LLDs.

Page 62 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-23 7/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 1 SEWAGE TREATMENT PLANT(*) CONTINUOUS MODE Unit 1st Quarter 2°d Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD I-131 Ci <LLD <LLD <LLD <LLD <LLD I-133 Ci <LLD <LLD <LLD <LLD <LLD I-135 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Tc-99m Ci <LLD <LLD <LLD <LLD <LLD Ru-103 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-136 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Total Ci <LLD <LLD <LLD <LLD <LLD H-3 Ci 1.39E-02 <LLD <LLD <LLD 1.39E-02 Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total Ci l.39E-02 <LLD <LLD <LLD 1.39E-02

(*): The Sewage Treatment Plant is 100% allocated to Unit 1.

Page 63 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-23 7/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 1 SEWAGE TREATMENT PLANT(*) BATCH MODE Unit 1st Quarter 2°d Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-II Om Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path Page 64 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 .

EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 2 STORM SEWER SYS1EM (*) CONTINUOUS MODE Unit 1*t Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD 1-131 Ci <LLD <LLD <LLD <LLD <LLD 1-133 Ci <LLD <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Tc-99m Ci <LLD <LLD <LLD <LLD <LLD Ru-103 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-136 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Total Ci <LLD <LLD <LLD <LLD <LLD H-3 Ci 3.28E-02 4.89E-02 4.99E-02 4.95E-02 1.81E-01 Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD*

Xe-133 Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total Ci 3.28E-02 4.89E-02 4.99E-02

4.95E-02 l.81E-01

(*): The Storm Sewer System is 50% allocated to Unit 2.

Page 65 of 178

DRESDEN NUCLEAR POWER STATION

2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKETNUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 2 STORM SEWER SYSTEM (*) BATCH MODE Unit 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci :

Ru-103 Ci Ag-llOm Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path Page 66 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January. through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-0 l 0/50-23 7 /50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 3 STORM SEWER SYSTEM (*) CONTINUOUS MODE Unit 151 Quarter znd Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci <LLD <LLD <LLD <LLD <LLD Sr-90 Ci <LLD <LLD <LLD <LLD <LLD 1-131 Ci <LLD <LLD <LLD <LLD <LLD 1-133 Ci <LLD <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci <LLD <LLD <LLD <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci <LLD <LLD <LLD <LLD <LLD Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Zr-95 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Tc-99m Ci <LLD <LLD <LLD <LLD <LLD Ru-103 Ci <LLD <LLD <LLD <LLD <LLD Ag-llOm Ci <LLD <LLD <LLD <LLD <LLD Sb-124 Ci <LLD <LLD <LLD <LLD <LLD Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-136 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD <LLD <LLD <LLD Ba-140 Ci <LLD <LLD <LLD <LLD <LLD Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Total Ci <LLD <LLD <LLD <LLD <LLD H-3 Ci 3.28E-02 4.89E-02 4.99E-02 4.95E-02 1.81E-01 Kr-87 Ci <LLD <LLD <LLD <LLD <LLD Kr-88 Ci <LLD <LLD <LLD <LLD <LLD Xe-133 Ci <LLD <LLD *<LLD <LLD <LLD Xe-135 Ci <LLD <LLD *<LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total Ci 3.28E-02 4.89E-02 4.99E-02 4.95E-02 1.81E-01

(*):The Storm Sewer System is 50% allocated to Unit 3.

Page 67 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: . Exelon Nuclear LIQUID EFFLUENTS UNIT 2 STORM SEWER SYSTEM (*) BATCH MODE Unit 181 Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-llOm Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path Page 68 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKETNUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 2 RADWASTE (*) CONTINUOUS MODE Unit 1st Quarter 2°d Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-llOm Ci Sb-125 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*): No continuous releases via this effluent path Page 69 of 178

DRESDEN NUCLEAR POWER STATION

2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 2 RADWASTE (*) BATCH MODE Unit 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-llOm Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*): No batch releases via this effluent path Page 70 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016

. EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 3 RADWASTE (*) CONTINUOUS MODE Unit 181 Quarter 2°d Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-llOm Ci Sb-125 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-133m

Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*):No continuous releases via this effluent path Page 71of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 3 RADWASTE (*) BATCH MODE Unit 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-llOm Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*): No batch releases via this effluent path Page 72 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January.through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility:. Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 2 CONTAINMENT COOLING SERVICE WATER(*) CONTINUOUS MODE Unit 151 Quarter 2nd Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-llOm Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*): No continuous releases via this effluent path Page 73 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 2 CONTAINMENT COOLING SERVICE WATER(*) BATCH MODE Unit 1st Quarter 2"d Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci 1-131 Ci I-133 Ci 1-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-llOm Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*): No batch releases via this effluent path.

Page 74of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50~010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 3 CONTAINMENT COOLING SERVICE WATER(*) CONTINUOUS MODE Unit 1st Quarter 2°d Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc~99m Ci Ru-103 Ci Ag..:llOm Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*): No continuous releases via this effluent path Page 75of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 EFFLUENT AND WASTE DISPOSAL

SUMMARY

DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear LIQUID EFFLUENTS UNIT 3 CONTAINMENT COOLING SERVICE WATER(*) BATCH MODE Unit 151 Quarter 2°d Quarter 3rd Quarter 4th Quarter Annual Fe-55 Ci Sr-89 Ci Sr-90 Ci I-131 Ci I-133 Ci I-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Zr-95 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-llOm Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-135 Ci Xe-138 Ci Total Ci None(*) None(*) None(*) None(*) None(*)

(*):No batch releases via this effluent path Page 76 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not irradiated fuel)

Types of Waste Type of Waste Unit 12-Month Period Est. Total Error, %

a. Spent resins, filter sludges I filters, evaporator m 8.77E+Ol

+I- 2.50E+Ol bottoms, etc. Ci l.36E+02

b. Dry compressible waste, contaminated m l.OOE+03

+I- 2.50E+Ol equipment, etc. Ci 6.13E+OO

c. Irradiated components, control rods, etc. m O.OOE+OO NIA Ci O.OOE+OO

d. Other - Contaminated Oil m 6.74E+OO

+I- 2.50E+Ol Ci 6.04E-03 Estimate of Major (i.e., ~1 %) Nuclide Composition (by Type of Waste) a Spent resins, filters I filter sludges, evaporator bottoms, etc.

Nuclide Percent% Curies Fe-55 51.18 6.95E+Ol Co-60 33.23 4.24E+Ol Cs-137 10.68 l.45E+Ol Zn-65 3.88 5.27E+OO Mn-54 1.27 l.73E+OO Shipment type: LSA, Type B Solidification agent or absorbent: None

b. Dry compressible waste, contaminated equipment, etc.

Nuclide Percent% Curies Fe-55 45.45 2.79E+OO Co-60 37.63 2.31E+OO Mn-54 7.76 4.76E-Ol Zn-65 2.41 l.48E-Ol Cr-51 2.08 l.28E-01 Shipment type: LSA Solidification agent or absorbent: None

c. Irradiated components, control rods, etc.

Nuclide Percent% Curies NONE NIA NIA

d. Other - Contaminated Oil Page 77 of 178

DRESDEN NUCLEAR POWER STATION

. 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS DOCKET NUMBERS: 50-010150-237150-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Nuclide Percent% Curies Fe-55 42.15 2.55E-03 Co-60 38.95 2.35E-03 Mn-54 6.19 3.73E-04 Cr-51 3.32 2.00E-04 Zn-65 2.92 1.76E-04 Fe-59 1.50 9.07E-05 Co-58 1.24 7.46E-05 Solid Waste Disposition Number of Shipments Mode of Transportation Destination 29 Motor freight (exclusive use only) Energy Solutions - Bear Creek Road, Oak Ridge, TN 15 Motor freight (exclusive use only) Energy Solutions - Clive, UT 2 Motor freight (exclusive use only) Waste Control Specialists - Andrew, TX IRRADIATED FUEL SHIPMENTS (DISPOSITION)

Number of Shipments Mode of Transportation Destination NONE NIA NIA CHANGESTOTHEPROCESSCONTROLPROGRAM No changes were made to the Dresden Station radioactive liquid, gaseous, or solid waste treatment systems in 2016.

Page 78 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 RADIOLOGICAL IMPACT ON MAN DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear

1. Doses to a Member of the Public due to Liquid Releases in 2016 (from 01/01/2016 to 12131/2016):

UNITS 1,2,3 Total Body: l.38E-06 mrem Organ: 1.38E-06 mrem UNIT 1 Total Body: 5.llE-08 mrem Organ: 5.llE-08 mrem UNIT2 Total Body: 6.62E-07 mrem Organ: 6.62E-07 mrem UNIT3 Total Body: 6.62E-07 mrem Organ: 6.62E-07 mrem The above annual liquid dose values are reported per Dresden-site (UNITS 1,2,3) as well as per each individual reactor unit (UNIT 1, UNIT 2, UNIT 3). Regulatory annual liquid dose limits are listed on page 1 section 1.d.3) and section 1.d.4), ohhis report as well as in Dresden ODCM. The above annual liquid dose values are well below any regulatory limits.

2. Doses to a Member of the Public due to Gaseous Releases in 2016 (from 01/01/2016 to 12131/2016):

UNITS 1,2,3 Gamma air (fission and activation gases): 3.32E-03 mrad Beta air (fission and activation gases): 7.91E-04 mrad Total Body (noble gases): 2.51E-03 mrem Skin (noble gases): 4.30E-03 mrem Organ - bone (radioiodinesltritium/particulates): 9.34E-02 mrem UNIT 1 Gamma air (fission and activation gases): NIA Beta air (fission and activation gases): NIA Total Body (noble gases): NIA Skin (noble gases): NIA Organ - bone (radioiodinesltritium/particulates): 1.87E-03 mrem UNIT2 Gamma air (fission and activation gases): 8.75E-04 mrad Beta air (fission and activation gases): 2.08E-04 mrad Total Body (noble gases): 6.64E-04 mrem Skin (noble gases): 1.13E-03 mrem Organ - bone (radioiodinesltritium/particulates): 4.51E-02 mrem UNIT3 Gamma air (fission and activation gases): 2.45E-03 mrad Beta air (fission and activation gases): 5.83E-04 mrad Total Body (noble gases): 1.84E-03 mrem Page 79 of 178 j

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT Janumy through December 2016 RADIOLOGICAL IMPACT ON MAN DOCKETNUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Skin (noble gases): 3.17E-03 mrem Organ - bone (radioiodines/tritium/particulates): 4.72E-02 mrem The above annual gaseous dose values are reported per Dresden-site (UNITS 1,2,3) as well as per each individual reactor unit (UNIT 1, UNIT 2, UNIT 3). Regulatory annual gaseous dose limits are listed on page 1 section l.a. and section l .b.,c., of this report as well as in Dresden ODCM. The above annual gaseous dose values are well below any regulatory limits.

3. Doses to a Member of the Public due to Direct Radiation in 2016 (from 0110112016 to 12/3112016):

UNITS 1,2,3 Total Body (skyshine): 8.79E+OO mrem UNITS 1 Total Body (skyshine): NIA UNITS 2 Total Body (skyshine): 4.58E+OO mrem UNITS 3 Total Body (skyshine): 4.21E+OO mrem The above annual direct dose values are reported per Dresden-site (UNITS 1,2,3) as well as per each individual reactor unit (UNIT 1, UNIT 2, UNIT 3). These numbers are calculated per ODCM methodologies, and are used to demonstrate compliance with 40CFR190 total dose limit requirements listed on page 1 section l.e, of this report as well as in Dresden ODCM.

4. Total body doses to the population and average doses to individuals in the population from all receiving-water-related-pathways are not applicable to Dresden Station. No downstream drinking water pathway exist within the specified distance of 10 kilometers (6.2miles).

5. Total body doses to the population and average doses to individuals in the population from gaseous effluents to a distance of 50 miles from the site are not applicable to Dresden Station.

6. Doses from liquid and gaseous effluent to members of the public due to their activities inside the site boundary for the report period are not applicable to Dresden Station. Any member of the public who is onsite for a significant period of time is issued an Optical Stimulated Luminescent Dosimeter (OSLD) to monitor direct radiation exposure.

7. For the report period, there was one radiation monitor that exceeded its ODCM allowed inoperability time of 30 days.

The Unit 2 Service Water rad monitor was non-functional for 31 days from 4/6/16 to 517116. Issue Report 2667212 was written to describe the event and to track corrective actions. Compensatory sampling was in place from the time the monitor was considered non-functional until it was returned to functional status. The rad monitor was initially declared non-functional due to repeated failure and multiple replacements of the of the pump/motor/gearbox combination.

Troubleshooting activities were performed throughout the ODCM allowed inoperability time, as a team of individuals determined potential causes of the pump problems, and then worked to systematically determine the actual cause. It was determined that the seal purge line was plugged, which lead to a successful pump replacement and pump rnn. The U2 Page 80 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 RADIOLOGICAL IMPACT ON MAN DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Service Water rad monitor was restored to functional status on 517116.

8. 40CFR190 I 10CFR72 Compliance:

The General Electric Hitachi Nuclear Energy Morris Operation (GEH Morris Operation) facility is physically located near Dresden Station, hence it is considered in the evaluation of the uranium fuel cycle on members of the public in the general environment.

Dresden decommissioning activities (Unit 1) and operations (Units 2 and 3) resulted in a maximum 9.34E-02 mrem organ dose and 8.79E+OO mrem total body dose. The Radiological Environmental Monitoring Program (REMP) direct radiation monitoring at or near the site boundary demonstrates that total body dose calculations to account for skyshine as found in the ODCM are conservative.

No effluents were released from the Dresden Independent Spent Fuel Storage Installations (ISFSis) during 2016.

REMP direct radiation monitoring at or near the site boundary demonstrates that the ISFSis do not result in measurable dose to the public.

According to the 2016 GEH Morris Operation 10CFR72.44(d)(3) report, dated 2/24/2017, for the 2016 calendar year, the maximum dose at their site boundary from direct radiation exposure was 4.lOE-01 mrem. The maximum organ dose from site activities was l.20E-07 mrem for 2016.

Maximum combined total body dose from Dresden Station and GEH Morris Operation activities was 9.20E+OO mrem during 2016, which was 36.80 % of the 40CFR190 limit of 25 mrem.

Maximum combined organ dose from Dresden and GEH Morris Operation activities was 9.34E-02 mrem during 2016.

This was 0.37 % of the 40CFR190 limit of 25 mrem to any organ. The combined thyroid dose was 2.63E-02 mrem. This was 0.04 % of the 40CFR190 limit of75 mrem.

Page 81of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 All Stabilities Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 6 12 14 28 17 15 6 3 4 0 105 NNE 0 1 5 6 16 11 7 3 5 3 3 60 NE 0 3 8 11 19 19 11 2 0 0 1 74 ENE 0 2 11 13 16 10 6 0 0 0 0 58 E 0 4 3 14 42 21 3 1 2 2 0 92 ESE 0 2 7 11 42 24 15 10 15 1 0 127 SE 0 3 5 5 15 12 15 6 11 6 0 78 SSE 0 4 2 5 37 51 17 6 14 2 0 138 s 0 4 3 15 45 38 39 40 32 5 2 223 SSW 0 3 8 13 35 21 17 21 32 12 1 163 SW 0 1 8 11 16 31 21 16 14 4 2 124 WSW 0 1 9 9 18 18 13 11 8 11 2 100 w 0 2 9 9 33 45 49 30 54 7 6 244 WNW 0 7 6 16 38 42 47 41 18 1 0 216 NW 0 9 6 11 35 29 42 26 34 4 0 196 NNW 0 4 11 7 38 43 20 25 27 6 0 181 Tot 0 56 113 170 473 432 337 244 269 68 17 2179 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 2179 Hours of Missing Data 5 Hours in Period . . . . . . 2184 Page 82 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 2 0 0 0 2 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 1 0 0 0 0 0 0 0 1 ESE 0 0 0 0 0 0 0 0 2 0 0 2 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 2 1 0 0 3 WSW 0 0 0 0 0 2 0 1 0 0 0 3 w 0 0 0 0 0 0 0 0 4 0 2 6 WNW 0 0 0 0 1 0 1 0 0 0 0 2 NW 0 0 0 0 0 2 0 0 0 0 0 2 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 1 1 4 1 5 7 0 2 21 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 21 Hours of Missing Data 5 Hours in Period . . . 2184 Page 83 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 1 0 0 0 1 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 1 1 0 1 0 0 0 3 SE 0 0 0 1 0 0 1 0 0 0 0 2 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 1 1 0 2 SSW 0 0 0 0 0 0 0 0 0 2 0 2 SW 0 0 0 0 0 1 1 0 0 1 1 4 WSW 0 0 0 0 1 2 0 1 1 0 0 5 w 0 0 0 0 0 1 0 0 0 1 1 3 WNW 0 0 0 0 0 0 0 2 0 0 0 2 NW 0 0 0 0 1 3 1 0 0 0 0 5 NNW 0 0 0 0 0 0 1 0 1 0 0 2 Tot 0 0 0 1 3 8 4 5 3 5 2 31 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 31 Hours of Missing Data 5 Hours in Period . . . 2184 Page 84 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 1 0 0 0 0 0 1 ENE 0 0 0 0 1 2 0 0 0 0 0 3 E 0 0 0 0 0 1 1 0 0 0 0 2 ESE 0 0 0 0 0 0 0 0 1 0 0 1 SE 0 0 0 0 0 2 2 0 0 0 0 4 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 1 0 0 1 SSW 0 0 0 0 1 0 0 0 1 3 0 5 SW 0 0 0 0 1 2 1 0 3 0 0 7 WSW 0 0 0 0 1 0 0 0 1 0 0 2 w 0 0 0 0 2 3 2 0 2 1 1 11 WNW 0 0 0 0 1 0 1 0 1 0 0 3 NW 0 0 0 0 1 2 1 1 1 0 0 6 NNW 0 0 0 0 1 1 0 0 2 0 0 4 Tot 0 0 0 0 9 14 8 1 13 4 1 50 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 50 Hours of Missing Data 5 Hours in Period . . . 2184 Page 85 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s}

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 2 4 6 7 7 1 2 0 0 29 NNE 0 0 1 1 2 1 0 2 2 0 0 9 NE 0 0 1 5 5 4 6 2 0 0 0 23 ENE 0 0 3 3 3 1 0 0 0 0 0 10 E 0 1 0 3 8 9 0 0 1 0 0 22 ESE 0 0 1 2 4 3 3 5 5 0 0 23 SE 0 0 0 4 3 1 2 1 4 2 0 17 SSE 0 0 0 0 4 8 4 1 3 0 0 20 s 0 1 0 3 3 1 6 11 16 2 0 43 SSW 0 0 1 0 5 6 1 2 6 7 1 29 SW 0 0 2 3 1 5 6 7 6 1 1 32 WSW 0 0 3 2 10 8 4 4 0 3 2 36 w 0 0 3 2 6 7 11 8 20 2 2 61 WNW 0 1 1 7 8 7 4 17 13 0 0 58 NW 0 0 3 2 9 3 10 6 13 1 0 47 NNW 0 1 4 3 10 11 2 8 6 3 0 48 Tot 0 4 25 44 87 82 66 75 97 21 6 507 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 507 Hours of Missing Data 5 Hours in Period . . . 2184 Page 86 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 4 8 8 17 10 8 2 1 4 0 62 NNE 0 1 3 5 13 10 7 1 3 3 3 49 NE 0 0 7 6 14 14 5 0 0 0 1 47 ENE 0 2 8 10 12 7 6 0 0 0 0 45 E 0 2 1 8 30 11 2 1 1 2 0 58 ESE 0 1 3 6 23 19 12 4 7 1 0 76 SE 0 3 4 0 9 9 10 5 7 4 0 51 SSE 0 0 1 4 33 42 13 5 11 2 0 111 s 0 2 3 7 29 32 32 29 14 2 2 152 SSW 0 0 1 4 19 12 16 19 25 0 0 96 SW 0 1 3 2 8 9 11 7 4 2 0 47 WSW 0 0 3 6 4 4 6 4 6 8 0 41 w 0 1 3 7 25 34 36 22 28 3 0 159 WNW 0 2 5 9 27 35 41 22 4 1 0 146 NW 0 6 2 7 24 19 30 19 20 3 0 130 NNW 0 2 3 4 24 31 17 17 18 3 0 119 Tot 0 27 58 93 311 298 252 157 149 38 6 1389 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 1389 Hours of Missing Data 5 Hours in Period . . . 2184 Page 87 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-0 l 0/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8 .. 1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10. 0 Total N 0 1 2 2 5 0 0 0 0 0 0 10 NNE 0 0 1 0 1 0 0 0 0 0 0 2 NE 0 3 0 0 0 0 0 0 0 0 0 3 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 1 2 2 3 0 0 0 0 0 0 8 ESE 0 1 3 3 12 1 0 0 0 0 0 20 SE 0 0 1 0 3 0 0 0 0 0 0 4 SSE 0 4 1 1 0 1 0 0 0 0 0 7 s 0 1 0 5 12 5 1 0 0 0 0 24 SSW 0 3 5 9 9 3 0 0 0 0 0 29 SW 0 0 3 6 2 11 2 0 0 0 0 24 WSW 0 1 3 0 2 2 3 1 0 0 0 12 w 0 1 3 0 0 0 0 0 0 0 0 4 WNW 0 4 0 0 1 0 0 0 0 0 0 5 NW 0 3 1 2 0 0 0 0 0 0 0 6 NNW 0 1 3 0 3 0 0 0 0 0 0 7 Tot 0 24 28 30 53 23 6 1 0 0 0 165 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 165 Hours of Missing Data 5 Hours in Period . . . 2184 Page 88 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- B.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 B.O 10.0 Total N 0 1 0 0 0 0 0 0 0 0 0 1 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 .0 0 1 0 0 0 0 0 0 1 ESE 0 0 0 0 2 0 0 0 0 0 0 2 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 1 0 0 0 0 0 0 1 SSW 0 0 1 0 1 0 0 0 0 0 0 2 SW 0 0 0 0 4 3 0 0 0 0 0 7 WSW 0 0 0 1 0 0 0 0 0 0 0 1 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 1 0 0 0 0 0 0 0 0 1 Tot 0 1 2 1 9 3 0 0 0 0 0 16 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 16 Hours of Missing Data 5 Hours in Period . . . . . . 2184 Page 89 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 All Stabilities Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.l- 5.l- 6.1- 8.l- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 7 7 12 21 18 23 17 8 3 4 120 NNE 0 0 0 6 14 15 10 4 6 5 7 67 NE 0 l 4 9 15 18 9 11 5 0 0 72 ENE 0 2 l 7 27 11 10 10 l 0 0 69 E 0 l 2 11 16 29 19 9 3 0 4 94 ESE 0 0 4 9 9 10 22 19 19 12 2 106 SE 0 1 l 2 9 13 36 l4 13 9 6 104 SSE 0 0 0 2 10 14 36 28 16 3 5 114 s 0 0 1 2 l3 20 27 29 65 32 7 196 SSW 0 1 1 2 9 22 41 33 38 28 14 189 SW 0 0 3 4 8 8 21 19 42 l3 6 124 WSW 0 0 4 5 19 20 15 5 24 9 18 119 w 0 0 2 6 14 25 31 45 64 44 14 245 WNW 0 2 l 6 19 23 27 37 71 20 4 210 NW 0 2 6 4 l4 18 33 29 52 24 9 191 NNW 0 0 1 8 12 15 34 28 32 22 7 159 Tot 0 17 38 95 229 279 394 337 459 224 107 2179 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 2179 Hours of Missing Data 5 Hours in Period . . . 2184 Page 90of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DAT A DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 2 0 0 2 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0

. ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 1 0 0 0 0 0 0 0 1 ESE 0 0 0 0 0 0 0 0 0 2 0 2 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 3 0 0 3 WSW 0 0 0 0 0 1 1 0 1 0 0 3 w 0 0 0 0 0 0 0 0 1 3 2 6 WNW 0 0 0 0 0 1 0 0 1 0 0 2 NW 0 0 0 0 0 0 2 0 0 0 0 2 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 1 0 2 3 0 8 5 2 21 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 21 Hours of Missing Data 5 Hours in Period . . . . . . 2184 Page 91of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 1 0 0 0 1 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 1 1 0 1 0 1 0 0 4 SE 0 0 0 0 0 0 1 0 0 0 0 1 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 1 0 1 SSW 0 0 0 0 0 0 0 0 0 0 3 3 SW 0 0 0 0 0 0 1 1 0 0 2 4 WSW 0 0 0 0 0 1 2 0 1 1 0 5 w 0 0 0 0 0 1 0 0 0 0 2 3 WNW 0 0 0 0 1 0 0 0 2 0 0 3 NW 0 0 0 0 0 0 4 0 0 0 0 4 NNW 0 0 0 0 0 0 1 0 0 1 0 2 Tot 0 0 0 1 2 2 10 2 4 3 7 31 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 31 Hours of Missing Data 5 Hours in Period . . . 2184 Page 92of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-23 7/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 1 0 0 0 0 1 ENE 0 0 0 0 1 1 1 0 0 0 0 3 E 0 0 0 0 0 0 1 1 0 0 0 2 ESE 0 0 0 0 0 0 0 0 0 1 0 1 SE 0 0 0 0 0 1 3 0 0 0 0 4 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 1 0 1 SSW 0 0 0 0 1 0 1 0 0 1 3 6 SW 0 0 0 0 0 1 1 1 1 2 0 6 WSW 0 0 0 0 1 0 0 0 0 1 0 2 w 0 0 0 0 1 2 3 1 0 2 2 11 WNW 0 0 0 0 0 1 0 0 1 1 0 3 NW 0 0 0 0 1 1 3 0 1 1 1 8 NNW 0 0 0 0 0 1 0 0 0 1 0 2 Tot 0 0 0 0 5 8 14 3 3 11 6 50 Hours of Calm o Hours of Variable Direction 0 Hours of Valid Data . 50 Hours of Missing Data 5 Hours in Period . . . . . . 2184 Page 93 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 2 5 10 1 7 7 1 2 0 36 NNE 0 0 0 2 0 1 1 0 1 2 0 7 NE 0 0 2 4 5 3 3 5 4 0 0 26 ENE 0 0 0 2 4 1 1 0 0 0 0 8 E 0 0 0 2 5 5 7 3 0 0 1 23 ESE 0 0 1 4 2 2 0 3 7 3 0 22 SE 0 0 0 1 3 4 5 1 2 4 2 22 SSE 0 0 0 0 0 6 5 3 2 0 0 16 s 0 0 0 1 7 1 3 4 15 12 1 44 SSW 0 1 0 0 0 4 3 1 4 5 8 26 SW 0 0 2 4 0 2 5 6 8 5 2 34 WSW 0 0 1 3 7 7 5 1 7 0 6 37 w 0 0 1 4 1 6 6 6 18 15 3 60 WNW 0 0 1 1 10 8 3 2 19 12 2 58 NW 0 1 3 3 5 5 3 9 10 8 2 49 NNW 0 0 0 3 5 4 7 2 9 6 3 39 Tot 0 3 13 39 64 60 64 53 107 74 30 507 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 507 Hours of Missing Data 5 Hours in Period . . . . . . 2184 Page 94of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 4 3 6 10 15 11 9 5 1 4 68 NNE 0 0 0 3 12 13 8 4 5 3 7 55 NE 0 0 2 3 9 15 5 6 1 0 0 41 ENE 0 1 0 4 20 9 8 10 1 0 0 53 E 0 1 1 8 11 24 11 5 3 0 3 67 ESE 0 0 1 4 5 7 16 14 11 6 2 66 SE 0 0 1 0 4 3 15 12 11 5 4 55 SSE 0 0 0 1 8 7 31 24 14 3 5 93 s 0 0 1 1 6 16 22 24 47 18 6 141 SSW 0 0 0 0 4 13 22 22 33 22 0 116 SW 0 0 0 0 6 3 10 7 16 6 2 50 WSW 0 0 1 1 6 7 2 3 7 5 12 44 w 0 0 0 2 9 15 22 38 45 24 5 160 WNW 0 2 0 5 8 13 23 35 48 7 2 143 NW 0 0 2 1 8 11 20 20 41 15 6 124 NNW 0 0 1 4 7 10 25 25 23 14 4 113 Tot 0 8 13 43 133 181 251 258 311 129 62 1389 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 1389 Hours of Missing Data 5 Hours in Period . . . 2184 Page 95 of 178 L _ _ __

DRESDEN NUCLEAR POWER STATION

2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 2 1 0 1 2 5 0 0 0 0 11 NNE 0 0 0 1 2 1 1 0 0 0 0 5 NE 0 1 0 2 1 0 0 0 0 0 0 4 ENE 0 1 1 1 2 0 0 0 0 0 0 5 E 0 0 1 0 0 0 0 0 0 0 0 1 ESE 0 0 2 0 1 1 5 2 0 0 0 11 SE 0 1 0 1 2 5 10 0 0 0 0 19 SSE 0 0 0 1 2 1 0 1 0 0 0 5 s 0 0 0 0 0 3 1 1 3 0 0 8 SSW 0 0 1 2 3 5 15 10 1 0 0 37 SW 0 0 1 0 2 2 3 4 11 0 0 23 WSW 0 0 2 1 5 3 3 0 7 2 0 23 w 0 0 1 0 3 1 0 0 0 0 0 5 WNW 0 0 0 0 0 0 1 0 0 0 0 1 NW 0 1 1 0 0 1 1 0 0 0 0 4 NNW 0 0 0 1 0 0 1 1 0 0 0 3 Tot 0 6 11 10 24 25 46 19 22 2 0 165 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 165 Hours of Missing Data 5 Hours in Period . . . 2184 Page 96of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 1 1 0 0 0 0 0 0 0 2 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0

. ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 2 1 0 0 0 3 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 1 0 0 0 0 1 SSW 0 0 0 0 1 0 0 0 0 0 0 1 SW 0 0 0 0 0 0 1 0 3 0 0 4 WSW 0 0 0 0 0 1 2 1 1 0 0 5 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 1 1 1 1 6 2 4 0 0 16 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 16 Hours of Missing Data 5 Hours in Period . . . 2184 Page 97 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 All Stabilities Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 3 1 4 13 9 17 15 25 6 6 99 NNE 0 3 2 6 4 16 18 9 12 5 8 83 NE 0 1 3 7 6 10 10 8 15 1 0 61 ENE 0 1 3 5 21 15 13 12 9 0 0 79 E 1 1 2 5 12 17 29 13 9 2 5 96 ESE 0 0 3 6 7 5 11 5 24 15 6 82 SE 0 0 2 2 9 8 14 22 34 18 11 120 SSE 0 0 0 0 5 14 14 22 31 7 6 99 s 0 1 0 2 13 6 8 21 63 47 29 190 SSW 0 0 3 0 2 8 19 17 48 48 51 196 SW 0 1 1 3 1 12 10 20 39 41 12 140 WSW 0 0 0 5 7 11 12 11 15 24 25 110 w 0 1 1 4 10 19 20 18 56 47 40 216 WNW 0 0 1 6 9 20 14 13 100 56 10 229 NW 0 1 4 1 10 18 16 26 71 29 23 199 NNW 0 1 2 5 11 10 13 28 48 27 18 163 Tot 1 14 28 61 140 198 238 260 599 373 250 2162 Hours of Calm 2 Hours of Variable Direction 0 Hours of Valid Data . 2164 Hours of Missing Data 20 Hours in Period . . . . . . 2184 Page 98 of 178 j

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 1 1 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 0 0 0 0 0 0 0 1 1 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 1 Hours of Missing Data 20 Hours in Period . . . 2184 Page 99 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 2 0 0 2 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 1 0 0 0 0 0 2 0 3 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 3 0 3 WNW 0 0 0 0 0 1 0 0 3 2 2 8 NW 0 0 0 0 0 0 0 3 1 0 0 4 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 1 0 1 0 3 6 7 2 20 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 20 Hours of Missing Data 20 Hours in Period . . . 2184 Page 100 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE'EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 1 0 1 0 0 3 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 1 0 0 0 0 1 ENE 0 0 0 0 1 0 2 0 0 0 0 3 E 0 0 0 0 0 0 1 1 0 0 0 2 ESE 0 0 0 1 0 0 0 0 1 1 0 3 SE 0 0 0 0 1 0 1 1 0 0 0 3 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 2 0 2 SSW 0 0 0 0 0 0 0 0 0 0 4 4 SW 0 0 0 0 0 0 0 2 3 1 2 8 WSW 0 0 0 0 1 1 4 0 1 2 0 9 w 0 0 0 0 0 2 5 1 1 2 4 15 WNW 0 0 0 0 0 2 0 0 6 4 0 12 NW 0 0 0 0 1 0 6 3 3 1 1 15 NNW 0 0 0 0 1 3 0 0 0 1 0 5 Tot 0 0 0 1 5 9 20 9 16 14 11 85 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 85 Hours of Missing Data 20 Hours in Period . . . . . . 2184 Page 101 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 0 4 10 6 13 11 12 4 6 67 NNE 0 2 1 5 2 8 14 4 3 4 8 51 NE 0 0 3 7 4 5 7 7 12 1 0 46

ENE 0 0 1 2 13 8 3 12 9 0 0 48 E 0 1 1 2 7 11 17 8 6 1 5 59 ESE 0 0 2 3 5 4 10 4 10 10 6 54 SE 0 0 0 1 7 7 9 8 11 6 6 55 SSE 0 0 0 0 4 9 11 10 15 6 0 55 s 0 0 0 1 13 5 4 13 22 13 11 82 SSW 0 0 1 0 0 3 12 6 12 10 25 69 SW 0 1 0 3 0 4 3 4 14 14 8 51 WSW 0 0 0 3 3 6 7 3 4 6 17 49 w 0 1 1 4 7 14 15 14 45 35 30 166 WNW 0 0 0 6 8 15 10 10 67 45 7 168 NW 0 0 4 1 9 15 7 13 45 26 22 142 NNW 0 0 2 5 10 6 11 21 39 25 17 136 Tot 0 6 16 47 102 126 153 148 326 206 168 1298 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 1298 Hours of Missing Data 20 Hours in Period . . . . . . 2184 Page 102 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1'- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 2 1 0 3 2 4 3 7 2 0 24 NNE 0 1 1 0 2 8 4 4 5 1 0 26 NE 0 0 0 0 2 4 2 1 3 0 0 12 ENE 0 1 2 3 6 7 8 0 0 0 0 27 E 1 0 1 3 4 5 10 4 3 1 0 32 ESE 0 0 0 1 2 1 1 0 11 2 0 18 SE 0 0 1 1 1 1 2 9 17 12 5 49 SSE 0 0 0 0 1 1 0 8 13 1 6 30 s 0 1 0 1 0 1 4 8 40 32 18 105 SSW 0 0 0 0 1 3 5 10 36 37 21 113 SW 0 0 1 0 1 8 5 12 13 15 2 57 WSW 0 0 0 1 3 3 1 6 3 13 6 36 w 0 0 0 0 3 2 0 3 10 7 6 31 WNW 0 0 1 0 1 2 4 3 24 5 0 40 NW 0 1 0 0 0 3 3 7 22 2 0 38 NNW 0 1 0 0 0 1 2 7 9 1 1 22 Tot 1 7 8 10 30 52 55 85 216 131 65 660 Hours of Calm 1 Hours of Variable Direction O Hours of Valid Data . 661 Hours of Missing Data 20 Hours in Period . . . . . . 2184 Page 103 of 178 L_

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 3 0 0 3 NNE 0 0 0 1 0 0 0 1 4 0 0 6 NE 0 1 0 0 0 1 0 0 0 0 0 2 ENE 0 0 0 0 1 0 0 0 0 0 0 1 E 0 0 0 0 1 1 1 0 0 0 0 3 ESE 0 0 1 0 0 0 0 1 2 0 0 4 SE 0 0 1 0 0 0 2 4 4 0 0 11 SSE 0 0 0 0 0 4 3 4 3 0 0 14 s 0 0 0 0 0 0 0 0 1 0 0 1 SSW 0 0 2 0 1 2 2 1 0 1 1 10 SW 0 0 0 0 0 0 2 2 7 8 0 19 WSW 0 0 0 1 0 1 0 2 7 3 2 16 w 0 0 0 0 0 1 0 0 0 0 0 1 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 1 4 2 3 10 10 15 31 12 3 91 Hours of Calm 1 Hours of Variable Direction O Hours of Valid Data . 92 Hours of Missing Data 20 Hours in Period . . . 2184 Page 104 of 178 J

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 2 0 0 2 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 2 3 0 5 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 0 0 0 0 0 4 3 0 7 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 7 Hours of Missing Data 20 Hours in Period . . . . . . 2184 Page 105of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 All Stabilities Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 2 3 8 22 29 18 16 0 0 0 98 NNE 0 2 7 17 26 29 19 9 0 0 0 109 NE 0 10 5 14 54 66 38 12 0 0 0 ,199 ENE 0 3 8 27 54 24 4 0 0 0 0 120 E 0 4 6 25 58 25 18 8 0 0 0 144 ESE 0 1 6 10 39 37 23 17 5 0 0 138 SE 0 2 6 6 39 26 21 1 9 1 0 111 SSE 0 1 8 9 36 27 17 14 11 1 0 124 s 0 8 12 20 36 36 27 18 22 3 0 182 SSW 1 1 14 11 40 22 11 12 12 2 1 127 SW 0 8 25 20 38 16 9 9 8 2 5 140 WSW 0 11 11 13 27 21 15 14 3 1 0 116 w 1 14 13 12 26 29 21 6 2 0 1 125 WNW 0 21 14 12 22 30 30 18 14 0 4 165 NW 0 9 22 16 27 23 22 16 23 4 1 163 NNW 0 6 11 22 35 10 7 14 15 1 0 121 Tot 2 103 171 242 579 450 300 184 124 15 12 2182 Hours of Calm 2 Hours of Variable Direction 0 Hours of Valid Data . 2184 Hours of Missing Data 0 Hours in Period . . . . . . 2184 Page 106 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range {m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 5 3 0 0 0 0 8 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 1 3 1 0 0 0 5 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 1 0 3 3 0 0 0 7 SE 0 0 0 0 2 0 3 0 0 0 0 5 SSE 0 0 0 1 0 0 0 0 0 0 0 1 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 1 1 2 SW 0 0 0 0 0 0 1 0 0 0 2 3 WSW 0 0 0 0 0 0 2 0 0 0 0 2 w 0 0 0 0 0 0 0 1 0 0 0 1 WNW 0 0 0 0 0 1 1 0 3 0 1 6 NW 0 0 0 0 1 1 0 0 0 0 0 2 NNW 0 0 0 0 1 0 1 1 2 0 0 5 Tot 0 0 0 1 5 8 17 6 5 1 4 47 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 47 Hours of Missing Data O Hours in Period . . . 2184 Page 107 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 1 1 1 2 0 0 0 0 5 NNE 0 0 0 0 1 0 0 0 0 0 0 1 NE 0 0 0 0 0 2 3 1 0 0 0 6 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 1 0 0 0 0 0 0 0 1 ESE 0 0 0 0 1 1 1 2 0 0 0 5 SE 0 0 0 0 0 1 4 1 0 0 0 6 SSE 0 0 0 0 0 2 0 0 0 0 0 2 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 1 2 0 0 0 0 0 3 WSW 0 0 0 0 4 4 1 3 0 0 0 12 w 0 0 0 0 1 1 2 1 0 0 0 5 WNW 0 0 0 0 0 0 3 0 2 0 2 7 NW 0 0 0 0 1 4 2 0 0 0 0 7 NNW 0 0 0 0 0 0 0 1 1 0 0 2 Tot 0 0 0 2 10 18 18 9 3 0 2 62 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 62 Hours of Missing Data O Hours in Period . . . 2184 Page 108of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 1 3 1 1 0 0 0 6 NNE 0 0 0 0 1 4 1 0 0 0 0 6 NE 0 0 0 0 0 4 5 0 0 0 0 9 ENE 0 0 0 0 0 1 0 0 0 0 0 1 E 0 0 0 0 3 0 0 0 0 0 0 3 ESE 0 0 0 1 0 4 1 1 0 0 0 7 SE 0 0 0 2 3 4 2 0 0 0 0 11 SSE 0 0 0 0 2 1 0 0 0 0 0 3 s 0 0 0 0 0 0 0 0 1 1 0 2 SSW 0 0 0 0 2 2 0 0 0 0 0 4 SW 0 0 1 0 0 2 0 1 0 0 0 4 WSW 0 0 0 0 2 2 3 2 0 0 0 9 w 0 0 0 0 1 1 1 0 0 0 0 3 WNW 0 0 0 0 1 1 0 2 1 0 1 6 NW 0 0 0 0 0 1 0 0 1 0 0 2 NNW 0 0 0 0 1 0 0 1 1 0 0 3 Tot 0 0 1 3 17 30 14 8 4 1 1 79 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 79 Hours of Missing Data 0 Hours in Period . . . 2184 Page 109 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DAT A DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 2 3 6 10 9 9 0 0 0 39 NNE 0 0 1 6 11 8 10 6 0 0 0 . 42 NE 0 0 2 6 13 30 19 9 0 0 0 79 ENE 0 0 0 5 6 10 4 0 0 0 0 25 E 0 1 0 5 13 6 3 6 0 0 0 34 ESE 0 0 4 3 10 9 6 3 3 0 0 38 SE 0 0 3 0 17 10 8 0 1 0 0 39 SSE 0 0 1 2 9 7 9 4 4 0 0 36 s 0 1 0 6 5 6 9 5 11 0 0 43 SSW 0 0 1 2 14 10 4 8 6 0 0 45 SW 0 1 1 3 5 3 5 3 4 1 2 28 WSW 0 0 0 2 7 8 2 8 1 0 0 . 28 w 0 1 1 2 8 10 12 3 1 0 1 39 WNW 0 0 2 6 9 12 13 10 8 0 0 60 NW 0 0 3 3 5 8 7 2 16 3 1 48 NNW 0 0 0 5 8 3 4 8 7 0 0 35 Tot 0 4 21 59 146 150 124 84 62 4 4 658 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 658 Hours of Missing Data O Hours in Period . . . 2184 Page 110of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through_December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 0 3 12 9 3 6 0 0 0 34 NNE 0 0 4 5 13 17 8 3 0 0 0 50 NE 0 6 2 6 41 29 8 1 0 0 0 93 ENE 0 2 6 17 47 13 0 0 0 0 0 85 E 0 0 4 16 39 19 15 2 0 0 0 95 ESE 0 0 0 3 18 20 12 8 2 0 0 63 SE 0 0 1 2 9 9 4 0 8 1 0 34 SSE 0 0 0 4 19 17 8 10 7 1 0 66 s 0 0 7 6 20 26 18 13 10 2 0 102 SSW 0 0 1 3 17 8 5 4 6 1 0 45 SW 0 1 3 3 7 6 2 4 4 1 1 32 WSW 0 2 0 4 6 4 7 1 2 1 0 27 w 0 3 1 5 13 16 6 1 1 0 0 46 WNW 0 5 3 3 12 16 13 6 0 0 0 58 NW 0 1 10 5 13 9 13 14 6 1 0 72 NNW 0 0 5 10 17 7 2 3 4 1 0 49 Tot 0 21 47 95 303 225 124 76 50 9 1 951 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 951 Hours of Missing Data 0 Hours in Period . . . 2184 Page 111of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 1 1 2 1 0 0 0 0 0 6 NNE 0 0 1 5 0 0 0 0 0 0 0 6 NE 0 2 0 2 0 0 0 0 0 0 0 4 ENE 0 1 1 4 1 0 0 0 0 0 0 7 E 0 2 1 1 3 0 0 0 0 0 0 7 ESE 0 1 2 2 9 3 0 0 0 0 0 17 SE 0 2 2 2 7 2 0 0 0 0 0 15 SSE 0 1 6 2 6 0 0 0 0 0 0 15 s 0 4 2 6 9 4 0 0 0 0 0 25 SSW 1 0 8 4 6 2 2 0 0 0 0 23 SW 0 1 10 9 13 2 1 1 0 0 0 37 WSW 0 7 6 5 6 3 0 0 0 0 0 27 w 0 3 8 3 3 1 0 0 0 0 0 18 WNW 0 3 4 3 0 0 0 0 0 0 0 10 NW 0 2 5 6 7 0 0 0 0 0 0 20 NNW 0 0 5 7 7 0 0 0 0 0 0 19 Tot 1 30 62 62 79 18 3 1 0 0 0 256 Hours of Calm 1 Hours of Variable Direction O Hours of Valid Data . 257 Hours of Missing Data 0 Hours in Period . . . 2184 Page 112of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 2 1 1 0 0 0 0 0 0 0 4 NE 0 2 1 0 0 0 0 0 0 0 0 3 ENE 0 0 1 1 0 0 0 0 0 0 0 2 E 0 1 1 2 0 0 0 0 0 0 0 4 ESE 0 0 0 1 0 0 0 0 0 0 0 1 SE 0 0 0 0 1 0 0 0 0 0 0 1 SSE 0 0 1 0 0 0 0 0 0 0 0 1 s 0 3 3 2 2 0 0 0 0 0 0 10 SSW 0 1 4 2 1 0 0 0 0 0 0 8 SW 0 5 10 5 12 1 0 0 0 0 0 33 WSW 0 2 5 2 2 0 0 0 0 0 0 11 w 1 7 3 2 0 0 0 0 0 0 0 13 WNW 0 13 5 0 0 0 0 0 0 0 0 18 NW 0 6 4 2 0 0 0 0 0 0 0 12 NNW 0 6 1 0 1 0 0 0 0 0 0 8 Tot 1 48 40 20 19 1 0 0 0 0 0 129 Hours of Calm 1 Hours of Variable Direction O Hours of Valid Data . 130 Hours of Missing Data O Hours in Period . . . . . . 2184 Page 113 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 All Stabilities Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (rn/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 2 2 5 28 30 27 16 20 0 0 130 NNE 0 0 2 6 17 21 24 22 10 0 0 102 NE 0 0 3 9 24 42 53 36 19 0 0 186 ENE 0 1 6 4 33 41 28 5 4 0 0 122 E 0 1 3 8 23 34 39 23 20 1 0 152 ESE 0 0 2 12 17 25 38 27 25 7 0 153 SE 0 0 5 4 23 25 35 18 7 8 2 127 SSE 0 1 1 6 19 22 27 18 19 8 1 122 s 0 0 2 4 14 21 34 42 30 18 3 168 SSW 0 0 2 4 13 32 26 15 16 10 3 121 SW 0 0 3 5 16 21 21 21 19 9 9 124 WSW 0 1 3 4 19 28 28 14 24 3 3 127 w 0 1 2 7 25 33 25 22 16 1 2 134 WNW 0 2 5 4 21 19 22 25 37 17 5 157 NW 0 1 4 9 15 25 18 24 27 21 8 152 NNW 0 1 2 4 17 23 16 9 21 13 1 107 Tot 0 11 47 95 324 442 461 337 314 116 37 2184 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 2184 Hours of Missing Data 0 Hours in Period . . . 2184 Page 114of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 4 2 2 0 0 0 8 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 1 3 1 0 0 5 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 1 0 1 3 2 0 0 7 SE 0 0 0 0 2 0 1 2 0 0 0 5 SSE 0 0 0 0 1 0 0 0 0 0 0 1 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 2 2 SW 0 0 0 0 0 0 0 1 0 0 2 3 WSW 0 0 0 0 0 0 1 1 0 0 0 2 w 0 0 0 0 0 0 0 0 1 0 0 1 WNW 0 0 0 0 0 1 0 1 1 2 1 6 NW 0 0 0 0 0 1 0 1 0 0 0 2 NNW 0 0 0 0 0 1 0 0 2 2 0 5 Tot 0 0 0 0 4 7 6 14 7 4 5 47 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 47 Hours of Missing Data O Hours in Period . . . . . . 2184 Page 115of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 1 0 1 2 1 0 0 0 5 NNE 0 0 0 0 0 1 0 0 0 0 0 1 NE 0 0 0 0 0 0 3 2 1 0 0 6 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 1 0 0 0 1 ESE 0 0 0 1 1 1 2 1 0 0 0 6 SE 0 0 0 0 0 1 3 3 0 0 0 7 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 1 1 0 0 0 Q 2 WSW 0 0 0 0 3 2 4 1 3 0 0 13 w 0 0 0 0 1 0 1 1 2 0 0 5 WNW 0 0 0 0 0 0 0 2 1 2 2 7 NW 0 0 0 0 0 2 3 2 0 0 0 7 NNW 0 0 0 0 0 0 0 0 1 1 0 2 Tot 0 0 0 2 5 9 19 14 8 3 2 62 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 62 Hours of Missing Data O Hours in Period . . . . . . 2184 Page 116of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 1 1 3 0 1 0 0 6 NNE 0 0 0 0 0 1 4 2 0 0 0 7 NE 0 0 0 0 0 0 5 3 0 0 0 8 ENE 0 0 0 0 0 1 0 0 0 0 0 1 E 0 0 0 0 1 2 0 0 0 0 0 3 ESE 0 0 0 0 1 1 3 2 0 0 0 7 SE 0 0 0 0 6 1 5 0 0 0 0 12 SSE 0 0 0 0 1 0 1 0 0 0 0 2 s 0 0 0 0 0 0 0 0 1 1 0 2 SSW 0 0 0 0 1 1 1 0 0 0 0 3 SW 0 0 0 1 1 0 2 0 1 0 0 5 WSW 0 0 0 0 2 1 1 3 2 0 0 9 w 0 0 0 0 1 0 1 0 1 0 0 3 WNW 0 0 0 0 0 1 2 0 2 1 1 7 NW 0 0 0 0 0 0 0 0 0 1 0 1 NNW 0 0 0 0 1 0 0 0 1 1 0 3 Tot 0 0 0 1 16 10 28 10 9 4 1 79 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 79 Hours of Missing Data 0 Hours in Period . . . . . . 2184 Page 117of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 1 1 8 6 9 6 12 0 0 43 NNE 0 0 0 4 10 5 9 8 7 0 0 43 NE 0 0 1 3 8 14 21 18 11 0 0 76 ENE 0 0 0 0 6 5 7 5 3 0 0 26 E 0 1 0 2 8 7 4 2 7 1 0 32 ESE 0 0 0 7 9 6 9 3 3 3 0 40 SE 0 0 1 3 10 12 10 6 2 1 0 45 SSE 0 0 0 1 4 6 7 6 3 2 0 .29 s 0 0 l 4 3 4 9 6 10 6 1 44 SSW 0 0 1 2 2 12 8 3 9 4 0 41 SW 0 0 2 1 3 4 4 2 8 3 4 31 WSW 0 0 0 1 4 9 4 3 7 2 0 30 w 0 0 1 2 4 7 6 8 7 1 1 37 WNW 0 0 1 1 6 8 9 8 16 10 1 60 NW 0 0 1 7 1 2 4 8 6 11 7 47 NNW 0 0 1 3 6 3 1 2 13 5 0 34 Tot 0 1 11 42 92 110 121 94 124 49 14 658 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 658 Hours of Missing Data O Hours in Period . . . . . . 2184 Page 118 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUALRADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 3 12 13 8 6 7 0 0 49 NNE 0 0 1 2 6 14 11 12 3 0 0 49 NE 0 0 0 5 12 27 23 10 6 0 0 83 ENE 0 1 1 3 22 35 21 0 1 0 0 . 84 E 0 0 1 3 11 22 31 18 13 0 0 99

. ESE 0 0 1 2 3 11 15 16 19 4 0 71 SE 0 0 1 0 3 6 10 3 5 7 2 37 SSE 0 0 0 2 8 9 15 12 16 6 1 69 s 0 0 0 0 4 9 18 29 18 11 2 91 SSW 0 0 0 0 3 8 11 7 6 6 1 42 SW 0 0 1 2 6 4 8 7 5 5 3 41 WSW 0 0 0 1 1 3 5 3 7 1 3 24 w 0 0 0 2 4 9 12 13 5 0 1 46 WNW 0 0 2 0 4 6 10 13 17 2 0 54 NW 0 0 1 1 8 11 6 12 21 9 1 70 NNW 0 0 1 1 9 8 7 7 4 4 1 42 Tot 0 1 10 27 116 195 211 168 153 55 15 951 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 951 Hours of Missing Data O Hours in Period . . . 2184 Page 119of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 0 0 7 4 3 1 0 0 0 16 NNE 0 0 0 0 1 0 0 0 0 0 0 1 NE 0 0 1 1 3 1 0 0 0 0 0 6 ENE 0 0 3 1 4 0 0 0 0 0 0 8 E 0 0 1 1 2 3 4 2 0 0 0 13 ESE 0 0 0 1 1 4 7 2 1 0 0 16 SE 0 0 0 1 2 4 6 3 0 0 0 16 SSE 0 0 1 2 3 6 4 0 0 0 0 16 s 0 0 0 0 5 7 5 6 1 0 0 24 SSW 0 0 0 2 4 9 4 5 1 0 0 25 SW 0 0 0 1 6 10 3 7 5 1 0 33 WSW 0 0 0 1 7 4 6 1 3 0 0 22 w 0 0 1 2 6 9 3 0 0 0 0 21 WNW 0 0 1 1 2 2 1 1 0 0 0 8 NW 0 1 1 1 4 6 5 1 0 0 0 19 NNW 0 0 0 0 0 7 6 0 0 0 0 13 Tot 0 2 9 15 57 76 57 29 11 1 0 257 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 257 Hours of Missing Data O Hours in Period . . . 2184 Page 120of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 1 0 0 1 0 0 0 0 0 3 NNE 0 0 1 0 0 0 0 0 0 0 0 1 NE 0 0 1 0 1 0 0 0 0 0 0 2 ENE 0 0 2 0 1 0 0 0 0 0 0 3 E 0 0 1 2 1 0 0 0 0 0 0 4 ESE 0 0 1 1 1 2 1 0 0 0 0 6 SE 0 0 3 0 0 1 0 1 0 0 0 5 SSE 0 1 0 1 2 1 0 0 0 0 0 5 s 0 0 1 0 2 1 2 1 0 0 0 7 SSW 0 0 1 0 3 2 2 0 0 0 0 8 SW 0 0 0 0 o. 2 3 4 0 0 0 9 WSW 0 1 3 1 2 9 7 2 2 0 0 27 w 0 1 0 1 9 8 2 0 0 0 0 21 WNW 0 2 1 2 9 1 0 0 0 0 0 15 NW 0 0 1 0 2 3 0 0 0 0 0 6 NNW 0 1 0 0 1 4 2 0 0 0 0 8 Tot 0 7 17 8 34 35 19 8 2 0 0 130 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 130 Hours of Missing Data O Hours in Period . . . 2184 Page 121of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 All Stabilities Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 1 0 7 20 18 29 25 1 0 101 NNE 0 0 1 4 11 19 22 23 31 1 0 112 NE 0 0 4 5 13 23 32 53 41 9 0 180 ENE 0 0 1 5 26 26 27 30 14 1 0 130 E 0 0 2 5 13 19 23 18 36 15 1 132 ESE 0 2 0 6 15 14 25 24 39 37 6 168 SE 0 0 2 4 17 18 32 27 25 4 6 135 SSE 0 0 0 3 14 16 15 17 36 10 6 117 s 0 1 2 5 6 11 17 24 49 - 37 16 168 SSW 0 0 1 1 6 19 21 11 50 10 10 - 129 SW 0 0 0 4 4 11 19 16 24 19 12 109 WSW 0 1 3 4 14 19 14 17 31 24 5 132 w 0 1 2 6 7 16 22 20 42 11 2 129 WNW 0 0 3 3 14 15 21 26 53 29 10 174 NW 0 2 1 7 10 12 12 23 32 29 20 148 NNW 0 1 1 6 10 10 15 15 41 15 6 120 Tot 0 8 24 68 187 268 335 373 569 252 100 2184 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 2184 Hours of Missing Data 0 Hours in Period . . . 2184 Page 122 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 1 0 0 0 0 0 0 1 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 0 1 0 0 0 0 0 0 1 Hours of Calm o Hours of Variable Direction O Hours of Valid Data . 1 Hours of Missing Data O Hours in Period . . . 2184 Page 123of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 1 0 0 2 1 0 0 4 SE 0 0 0 0 0 0 0 1 0 0 0 1 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 1 0 0 0 1 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 1 1 2 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 1 0 0 2 1 0 4 Tot 0 0 0 0 1 1 0 4 3 2 1 12 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 12 Hours of Missing Data 0 Hours in Period . . . 2184 Page 124 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 3 4 3 1 0 0 11 NNE 0 0 0 0 1 1 0 3 0 0 0 5 NE 0 0 0 0 0 0 1 6 3 0 0 10 ENE 0 0 0 0 0 0 1 0 0 0 0 1 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 1 0 0 4 2 4 0 0 11 SE 0 0 0 1 1 2 6 3 1 0 0 14 SSE 0 0 0 0 1 0 0 0 0 0 0 1 s 0 0 0 0 0 0 0 0 0 1 0 1 SSW 0 0 0 0 0 0 0 0 0 0 2 2 SW 0 0 0 0 1 0 2 0 0 0 2 5 WSW 0 0 0 0 3 2 2 5 2 0 0 14 w 0 0 0 0 0 0 0 0 3 0 0 3 WNW 0 0 0 0 0 0 0 2 4 4 3 13 NW 0 0 0 0 0 2 3 3 0 1 0 9 NNW 0 0 0 0 0 0 0 0 1 2 0 3 Tot 0 0 0 2 7 10 23 27 19 8 7 103 Hours of Calm o Hours of Variable Direction O Hours of Valid Data . 103 Hours of Missing Data 0 Hours in Period . . . . . . 2184 Page 125of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 1 0 6 8 8 16 18 1 0 58 NNE 0 0 0 4 8 7 18 14 21 1 0 73 NE 0 0 0 5 8 17 24 39 33 8 0 134 ENE 0 0 0 2 16 13 17 18 10 1 0 77 E 0 0 0 3 12 8 7 7 10 11 1 59 ESE 0 1 0 5 7 7 10 8 9 12 6 65 SE 0 0 1 2 11 12 12 10 10 4 6 68 SSE 0 0 0 2 8 4 8 9 13 8 6 58 s 0 0 2 3 3 4 5 10 18 15 8 68 SSW 0 0 1 1 2 12 12 4 16 5 5 58 SW 0 0 0 2 2 3 4 6 7 10 4 38 WSW 0 0 1 2 5 9 8 7 10 12 1 55 w 0 1 0 1 2 4 10 5 13 3 1 40 WNW 0 0 0 0 5 5 12 13 32 17 5 89 NW 0 0 1 3 5 5 5 10 16 25 19 89 NNW 0 0 1 5 6 5 3 2 18 11 6 57 Tot 0 2 8 40 106 123 163 178 254 144 68 1086 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 1086 Hours of Missing Data O Hours in Period . . . . . . 2184 Page 126of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 1 8 6 5 4 0 0 24 NNE 0 0 0 0 2 11 4 4 9 0 0 30 NE 0 0 1 0 4 5 7 8 5 1 0 31 ENE 0 0 1 1 9 13 9 12 4 0 0 49 E 0 0 1 2 1 7 12 11 24 4 0 62 ESE 0 1 0 0 2 6 10 9 22 24 0 74 SE 0 0 0 1 3 4 12 7 6 0 0 33 SSE 0 0 0 0 3 7 5 6 19 2 0 42 s 0 0 0 1 3 5 10 10 29 19 8 85 SSW 0 0 0 0 2 4 5 6 25 2 3 47 SW 0 0 0 0 0 6 7 5 11 4 6 39 WSW 0 0 0 2 5 6 3 4 6 8 4 38 w 0 0 0 2 2 6 9 8 12 7 1 47 WNW 0 0 0 1 6 5 6 2 12 7 1 40 NW 0 1 0 2 4 3 3 7 16 3 1 40 NNW 0 0 0 0 4 3 6 10 14 1 0 38 Tot 0 2 3 12 51 99 114 114 218 82 24 719 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 719 Hours of Missing Data 0 Hours in Period . . . . . . 2184 Page 127of178

. DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range {m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 1 0 5 2 0 0 8 NNE 0 0 0 0 0 0 0 2 1 0 0 3 NE 0 0 2 0 1 1 0 0 0 0 0 4 ENE 0 0 0 2 1 0 0 0 0 0 0 3 E 0 0 1 0 0 2 3 0 2 0 0 8 ESE 0 0 0 0 2 1 1 3 3 1 0 11 SE 0 0 0 0 1 0 2 5 6 0 0 14 SSE 0 0 0 1 2 5 2 2 4 0 0 16 s 0 1 0 1 0 2 2 4 2 2 0 14 SSW 0 0 0 0 1 2 2 1 9 3 0 18 SW 0 0 0 2 1 2 5 5 6 5 0 26 WSW 0 1 0 0 1 2 0 0 12 4 0 20 w 0 0 1 2 2 5 3 5 9 1 0 28 WNW 0 0 3 1 2 4 0 7 1 0 0 18 NW 0 0 0 2 1 0 1 2 0 0 0 6 NNW 0 0 0 1 0 1 4 3 6 0 0 15 Tot 0 2 7 12 15 28 25 44 63 16 0 212 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 212 Hours of Missing Data O Hours in Period . . . 2184 Page 128 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DAT A DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 1 0 0 0 0 0 0 0 0 1 NE 0 0 1 0 0 0 0 0 0 0 0 1 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 2 1 0 0 0 0 3 ESE 0 0 0 0 3 0 0 0 0 0 0 3 SE 0 0 1 0 0 0 0 1 2 0 0 4 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 1 1 2 0 0 0 0 4 SW 0 0 0 0 0 0 1 0 0 0 0 1 WSW 0 0 2 0 0 0 1 0 1 0 0 4 w 0 0 1 1 1 1 0 2 5 0 0 11 WNW 0 0 0 1 1 1 3 2 4 0 0 12 NW 0 1 0 0 0 2 0 1 0 0 0 4 NNW 0 1 0 0 0 0 2 0 0 0 0 3 Tot 0 2 6 2 6 7 10 6 12 0 0 51 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 51 Hours of Missing Data 0 Hours in Period . . . . . . 2184 Page 129of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 All Stabilities Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 7 10 15 19 19 12 12 1 0 0 95 NNE 0 4 6 20 27 18 20 14 2 1 0 112 NE 0 B 12 22 60 35 13 3 0 0 0 153 ENE 1 B 13 17 53 B 1 0 0 0 0 101 E 0 7 10 13 46 16 6 0 0 0 0 98 ESE 1 11 16 13 17 24 11 3 0 0 0 96 SE 0 7 12 14 31 34 B 1 0 0 0 107 SSE 0 B 10 27 73 50 9 1 0 0 0 178 s 0 12 26 35 BO 30 32 17 4 0 0 236 SSW 0 14 34 27 42 40 31 24 7 0 0 219 SW 1 15 39 38 45 25 15 5 4 0 0 187 WSW 0 16 19 17 40 30 12 0 0 0 0 134 w 0 13 25 12 46 22 15 12 13 0 0 158 WNW 1 17 16 14 29 21 13 4 0 0 0 115 NW 0 16 31 13 26 14 2 0 0 0 0 102 NNW 1 10 21 18 29 16 9 1 0 0 0 105 Tot 5 173 300 315 663 402 209 97 31 1 0 2196 Hours of Calm 7 Hours of Variable Direction O Hours of Valid Data . 2203 Hours of Missing Data 5 Hours in Period . . . . . . 2208 Page 130 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 1 0 0 0 1 NE 0 0 0 0 0 1 1 0 0 0 0 2 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 1 0 0 0 0 1 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 1 0 0 0 0 0 0 1 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 1 0 0 0 0 0 1 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 0 1 2 2 1 0 0 0 6 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 6 Hours of Missing Data 5 Hours in Period . . . 2208 Page 131of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DAT A DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 1 0 0 0 1 NE 0 0 0 0 0 1 1 0 0 0 0 2 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 1 0 2 0 0 0 0 3 ESE 0 0 0 0 0 1 1 0 0 0 0 2 SE 0 0 0 0 0 0 1 0 0 0 0 1 SSE 0 0 0 0 3 0 0 0 0 0 0 3 s 0 0 0 0 1 0 0 0 0 0 0 1 SSW 0 0 0 0 0 0 0 1 0 0 0 1 SW 0 0 0 0 0 3 1 1 0 0 0 5 WSW 0 0 0 0 0 3 0 0 0 0 0 3 w 0 0 0 0 0 1 0 0 0 0 0 1 WNW 0 0 0 0 0 3 0 0 0 0 0 3 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 1 4 0 0 0 0 0 5 Tot 0 0 0 0 6 16 6 3 0 0 0 31 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 31 Hours of Missing Data 5 Hours in Period . . . 2208 Page 132of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 1 0 0 0 0 0 1 NNE 0 0 0 1 0 1 1 0 0 0 0 3 NE 0 0 0 0 5 2 0 0 0 0 0 7 ENE 0 0 0 0 1 2 0 0 0 0 0 3 E 0 0 1 0 3 0 1 0 0 0 0 5 ESE 0 0 0 0 0 0 1 0 0 0 0 1 SE 0 0 0 0 0 2 3 0 0 0 0 5 SSE 0 0 0 0 5 0 0 0 0 0 0 5 s 0 0 0 0 1 1 1 0 0 0 0 3 SSW 0 0 0 0 3 2 1 0 1 0 0 7 SW 0 0 0 0 0 1 1 0 0 0 0 2 WSW 0 0 0 0 2 4 1 0 0 0 0 7 w 0 0 0 0 0 0 1 0 4 0 0 5 WNW 0 0 0 0 0 2 1 1 0 0 0 4 NW 0 0 0 0 0 0 1 0 0 0 0 1 NNW 0 0 0 0 2 2 0 0 0 0 0 4 Tot 0 0 1 1 22 20 13 1 5 0 0 63 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 63 Hours of Missing Data 5 Hours in Period . . . 2208 Page 133of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 3 4 7 4 6 0 0 0 24 NNE 0 1 3 5 5 7 4 4 1 0 0 30 NE 0 0 2 7 13 13 5 2 0 0 0 42 ENE 0 1 2 2 14 3 0 0 0 0 0 22 E 0 1 1 1 13 11 2 0 0 0 0 29 ESE 0 1 4 2 3 2 5 3 0 0 0 20 SE 0 1 5 4 6 10 3 0 0 0 0 29 SSE 0 0 1 9 21 14 8 0 . 0 0 0 53 s 0 0 5 13 19 19 11 13 3 0 0 83 SSW 0 2 5 11 11 23 17 18 4 0 0 91 SW 0 2 6 8 11 10 9 2 0 0 0 48 WSW 0 1 10 6 20 16 9 0 0 0 0 62 w 0 2 4 7 22 9 6 9 8 0 0 67 WNW 0 1 1 7 8 10 6 1 0 0 0 34 NW 0 0 4 4 10 7 1 0 0 0 0 26 NNW 0 0 2 2 10 4 5 1 0 0 0 24 Tot 0 13 55 91 190 165 95 59 16 0 0 684 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 684 Hours of Missing Data 5 Hours in Period . . . 2208 Page 134of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNEEFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 4 9 8 10 8 6 1 0 0 47 NNE 0 0 3 12 19 10 15 8 1 1 0 69 NE 0 2 5 12 39 18 6 1 0 0 0 83 ENE 0 3 8 14 38 3 1 0 0 0 0 67 E 0 3 6 12 28 5 0 0 0 0 0 54 ESE 0 2 6 5 10 19 4 0 0 0 0 46 SE 0 0 2 4 10 15 0 1 0 0 0 32 SSE 0 1 2 13 25 35 1 1 0 0 0 78 s 0 4 8 14 44 10 20 4 1 0 0 105 SSW 0 4 12 8 24 14 11 5 2 0 0 80 SW 0 4 8 11 22 10 4 2 3 0 0 64 WSW 0 3 4 5 14 5 2 0 0 0 0 33 w 0 0 7 3 20 11 8 3 1 0 0 53 WNW 0 4 10 6 17 6 6 2 0 0 0 51 NW 0 2 10 3 15 7 0 0 0 0 0 37 NNW 0 2 6 4 10 6 4 0 0 0 0 32 Tot 0 35 101 135 343 184 90 33 9 1 0 931 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 931 Hours of Missing Data 5 Hours in Period . . . 2208 Page 135 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DAT A DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 2 '4 2 7 1 0 0 0 0 0 16 NNE 0 2 0 2 3 0 0 0 0 0 0 7 NE 0 5 5 3 3 0 0 0 0 0 0 16 ENE 1 3 3 1 0 0 0 0 0 0 0 8 E 0 3 2 0 1 0 0 0 0 0 0 6 ESE 0 5 5 5 4 2 0 0 0 0 0 21 SE 0 1 3 6 13 6 1 0 0 0 0 30 SSE 0 7 6 4 18 1 0 0 0 0 0 36 s 0 5 12 8 14 0 0 0 0 0 0 39 SSW 0 5 10 8 4 1 2 0 0 0 0 30 SW 1 6 20 14 4 0 0 0 1 0 0 46 WSW 0 6 3 6 1 0 0 0 0 0 0 16 w 0 5 12 2 4 1 0 0 0 0 0 24 WNW 1 9 3 1 4 0 0 0 0 0 0 18 NW 0 9 12 6 1 0 0 0 0 0 0 28 NNW 1 5 10 11 6 0 0 0 0 0 0 33 Tot 4 78 110 79 87 12 3 0 1 0 0 374 Hours of Calm 4 Hours of Variable Direction O Hours of Valid Data . 378 Hours of Missing Data 5 Hours in Period . . . 2208 Page 136 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 4 2 1 0 0 0 0 0 0 0 7 NNE 0 1 0 0 0 0 0 0 0 0 0 1 NE 0 1 0 0 0 0 0 0 0 0 0 1 ENE 0 1 0 0 0 0 0 0 0 0 0 1 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 1 3 1 1 0 0 0 0 0 0 0 6 SE 0 5 2 0 2 1 0 0 0 0 0 10 SSE 0 0 1 1 0 0 0 0 0 0 0 2 s 0 3 1 0 1 0 0 0 0 0 0 5 SSW 0 3 7 0 0 0 0 0 0 0 0 10 SW 0 3 5 5 8 1 0 0 0 0 0 22 WSW 0 6 2 0 3 1 0 0 0 0 0 12 w 0 6 2 0 0 0 0 0 0 0 0 8 WNW 0 3 2 0 0 0 0 0 0 0 0 5 NW 0 5 5 0 0 0 0 0 0 0 0 10 NNW 0 3 3 1 0 0 0 0 0 0 0 7 Tot 1 47 33 9 14 3 0 0 0 0 0 107 Hours of Calm 3 Hours of Variable Direction o Hours of Valid Data . 110 Hours of Missing Data 5 Hours in Period . . . . . . 2208 Page 137 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 All Stabilities Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 3 7 7 17 18 11 11 23 1 0 98 NNE 0 3 6 4 25 21 10 20 15 1 1 106 NE 0 2 3 10 21 35 34 24 18 0 0 147 ENE 1 9 7 17 37 33 17 0 1 0 0 122 E 1 4 7 5 19 48 26 8 1 0 0 119 ESE 0 3 9 5 22 20 13 16 10 0 0 98 SE 0 4 8 5 11 15 23 17 11 0 0 94 SSE 0 1 8 9 39 47 53 18 0 0 0 175 s 0 1 4 12 51 46 41 39 27 4 0 225 SSW 0 3 5 15 47 56 46 33 38 3 0 246 SW 1 2 10 39 34 28 24 11 3 2 171 WSW 0 1 5 16 40 39 32 17 9 1 0 160 w 0 3 9 16 34 16 25 18 18 11 0 150 WNW 0 3 5 2 30 14 29 17 14 4 0 118 NW 0 4 4 4 20 20 22 10 5 0 0 89 NNW 0 5 4 11 23 24 8 9 1 0 0 85 Tot 3 51 101 155 475 486 418 281 202 28 3 2203 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 2203 Hours of Missing Data 5 Hours in Period . . . 2208 Page 138of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 S.ector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 1 0 0 1 NE 0 0 0 0 0 0 1 1 0 0 0 2 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 1 0 0 0 1 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 1 0 0 0 0 0 0 1 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 1 0 0 0 0 1 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 0 1 0 2 2 1 0 0 6 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 6 Hours of Missing Data 5 Hours in Period . . . . . . 2208 Page 139 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 1 0 0 0 0 1 NNE 0 0 0 0 0 0 0 0 1 0 0 1 NE 0 0 0 0 0 0 0 1 0 0 0 1 ENE 0 0 0 0 0 0 1 0 0 0 0 1 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 2 0 2 0 0 0 4 SE 0 0 0 0 0 0 1 1 0 0 0 2 SSE 0 0 0 0 1 2 0 0 0 0 0 3 s 0 0 0 0 1 0 0 0 0 0 0 1 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 1 1 1 2 0 0 5 WSW 0 0 0 0 0 1 2 0 0 0 0 3 w 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 3 1 0 0 0 4 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 1 2 1 0 0 0 0 4 Tot 0 0 0 0 3 8 11 6 3 0 0 31 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 31 Hours of Missing Data 5 Hours in Period . . . . . . 2208 Page 140of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range {m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 1 0 2 0 1 0 0 4 NE 0 0 0 0 1 5 1 0 0 0 0 7 ENE 0 0 0 0 0 1 2 0 0 0 0 3 E 0 0 1 0 0 2 0 0 0 0 0 3 ESE 0 0 0 0 0 1 0 2 0 0 0 3 SE 0 0 0 0 0 1 2 1 0 0 0 4 SSE 0 0 0 0 3 2 1 0 0 0 0 6 s 0 0 0 0 0 2 0 0 0 0 0 2 SSW 0 0 0 0 2 3 0 1 0 0 0 6 SW 0 0 0 0 0 1 0 2 0 1 0 4 WSW 0 0 0 0 1 2 3 1 0 0 0 7 w 0 0 0 0 0 0 0 0 0 3 0 3 WNW 0 0 0 0 0 0 2 2 1 1 0 6 NW 0 0 0 0 0 0 0 1 0 0 0 1 NNW 0 0 0 0 0 3 1 0 0 0 0 4 Tot 0 0 1 0 8 23 14 10 2 5 0 63 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 63 Hours of Missing Data 5 Hours in Period . . . 2208 Page 141of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelori Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- B.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 2 3 3 4 4 11 0 0 27 NNE 0 0 1 1 5 4 4 3 3 0 0 21 NE 0 1 0 3 6 10 B 6 7 0 0 41 ENE 0 2 0 5 4 10 5 0 0 0 0 26 E 0 1 1 0 4 13 7 5 1 0 0 32 ESE 0 0 2 0 6 5 1 5 5 0 0 24 SE 0 0 5 2 4 4 6 2 0 0 0 23 SSE 0 0 4 5 16 15 12 4 0 0 0 56 s 0 0 2 9 20 B 11 11 11 2 0 74 SSW 0 0 3 9 12 18 16 11 24 2 0 95 SW 0 1 6 7 7 7 9 11 3 0 0 51 WSW 0 1 2 9 12 14 9 4 5 0 0 56 w 0 2 5 6 12 B 9 7 9 7 0 65 WNW 0 0 2 2 14 6 6 3 6 2 0 41 NW 0 0 3 2 3 B 10 3 2 0 0 31 NNW 0 0 1 3 B 5 2 2 0 0 0 21 Tot 0 B 37 65 136 138 119 Bl 87 13 0 684 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 684 Hours of Missing Data 5 Hours in Period . . . 2208 Page 142of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 4 1 7 6 1 6 12 1 0 38 NNE 0 0 0 1 12 13 3 13 9 1 1 53 NE 0 0 0 2 10 18 22 16 11 0 0 79 ENE 0 1 5 6 28 21 9 0 1 0 0 71 E 0 2 2 4 11 32 19 2 0 0 0 72 ESE 0 0 3 3 13 9 9 7 5 0 0 49 SE 0 1 1 3 3 1 10 9 2 0 0 30 SSE 0 1 1 2 9 18 33 13 0 0 0 77 s 0 0 1 2 17 25 19 15 16 2 0 97 SSW 0 2 1 2 18 20 21 17 13 1 0 95 SW 1 0 1 4 14 11 16 7 6 2 2 64 WSW 0 0 0 3 4 13 11 5 3 0 0 39 w 0 0 0 3 4 5 10 10 9 1 0 42 WNW 0 2 1 0 7 5 14 10 7 1 0 47 NW 0 1 1 0 10 10 8 6 3 0 0 39 NNW 0 2 0 6 9 11 3 7 1 0 0 39 Tot 1 12 21 42 176 218 208 143 98 9 3 931 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 931 Hours of Missing Data 5 Hours in Period . . . 2208 Page 143of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 2 3 4 7 9 5 1 0 0 0 31 NNE 0 3 3 2 6 3 1 4 0 0 0 22 NE 0 0 1 1 4 2 2 0 0 0 0 10 ENE 0 4 1 5 5 1 0 0 0 0 0 16 E 1 0 2 1 3 1 0 0 0 0 0 8 ESE 0 0 4 2 3 3 3 0 0 0 0 15 SE 0 2 1 0 3 6 4 4 6 0 0 26 SSE 0 0 2 0 8 10 7 1 0 0 0 28 s 0 1 1 0 5 10 11 13 0 0 0 41 SSW 0 0 1 3 12 14 9 3 1 0 0 43 SW 0 1 3 4 14 11 2 2 0 0 0 37 WSW 0 0 2 4 15 6 3 0 0 1 0 31 w 0 1 2 5 13 3 3 1 0 0 0 28 WNW 0 1 1 0 5 3 4 1 0 0 0 15 NW 0 2 0 1 5 2 4 0 0 0 0 14 NNW 0 2 2 0 5 3 1 0 0 0 0 13 Tot 1 19 29 32 113 87 59 30 7 1 0 378 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 378 Hours of Missing Data 5 Hours in Period . . . 2208 Page 144of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range {m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 0 0 0 0 0 0 0 0 0 1 NNE 0 0 2 0 1 1 0 0 0 0 0 4 NE 0 1 2 4 0 0 0 0 0 0 0 7 ENE 1 2 1 1 0 0 0 0 0 0 0 5 E 0 1 1 0 1 0 0 0 0 0 0 3 ESE 0 3 0 0 0 0 0 0 0 0 0 3 SE 0 1 1 0 1 3 0 0 3 0 0 9 SSE 0 0 1 2 1 0 0 0 0 0 0 4 s 0 0 0 1 8 1 0 0 0 0 0 10 SSW 0 1 0 1 3 1 0 1 0 0 0 7 SW 0 0 0 2 4 3 0 1 0 0 0 10 WSW 0 0 1 0 8 3 3 7 1 0 0 23 w 0 0 2 2 5 0 2 0 0 0 0 11 WNW 0 0 1 0 4 0 0 0 0 0 0 5 NW 0 1 0 1 2 0 0 0 0 0 0 4 NNW 0 1 1 2 0 0 0 0 0 0 0 4 Tot 1 12 13 16 38 12 5 9 4 0 0 110 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 110 Hours of Missing Data 5 Hours in Period . . . 2208 Page 145of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 All Stabilities Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 2 8 13 10 12 11 24 12 2 95 NNE 0 2 1 4 14 13 18 12 31 19 2 116 NE 0 3 2 9 12 23 31 28 31 5 0 144 ENE 0 4 8 4 16 28 29 16 1 1 0 107 E 0 5 3 7 8 33 41 20 13 0 0 130 ESE 0 3 8 6 20 14 21 9 19 5 0 105 SE 0 2 9 1 15 15 15 12 26 9 0 104 SSE 0 4 2 10 25 29 22 35 37 1 0 165 s 0 4 7 5 25 25 31 40 67 26 2 232 SSW 0 4 3 11 26 29 36 38 79 20 1 247 SW 0 2 7 8 11 21 32 28 25 4 3 141 WSW 0 1 4 10 39 23 35 31 30 3 1 177 w 0 3 5 8 26 29 14 15 40 17 10 167 WNW 0 0 4 5 11 13 7 17 34 9 1 101 NW 0 1 3 8 11 21 13 18 17 1 0 93 NNW 0 1 2 4 9 17 18 9 14 0 0 74 Tot 0 40 70 108 281 343 375 339 488 132 22 2198 Hours of Calm 5 Hours of Variable Direction 0 Hours of Valid Data . 2203 Hours of Missing Data 5 Hours in Period . . . 2208 Page 146of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 0 0 0 0 0 0 0 0 0 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . O Hours of Missing Data 5 Hours in Period . . . 2208 Page 147of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 0 0 0 0 0 0 0 0 0 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . O Hours of Missing Data 5 Hours in Period . . . 2208 Page 148of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 1 0 0 0 0 1 NNE 0 0 0 0 0 0 0 0 1 1 0 2 NE 0 0 0 0 1 2 1 2 0 0 0 6 ENE 0 0 0 0 0 0 4 0 0 0 0 4 E 0 0 0 1 0 0 0 2 0 0 0 3 ESE 0 0 0 0 0 2 0 2 2 0 0 6 SE 0 0 0 0 0 0 0 2 0 0 0 2 SSE 0 0 0 0 2 1 0 0 0 0 0 3 s 0 0 0 0 0 1 0 0 0 0 0 1 SSW 0 0 0 0 0 0 1 0 1 1 0 3 SW 0 0 0 0 0 0 0 1 2 0 0 3 WSW 0 0 0 0 0 1 6 3 0 0 0 10 w 0 0 0 0 0 1 1 1 0 1 2 6 WNW 0 0 0 0 0 0 1 2 0 0 0 3 NW 0 0 0 0 0 0 0 1 0 0 0 1 NNW 0 0 0 0 1 4 1 0 0 0 0 6 Tot 0 0 0 1 4 12 16 16 6 3 2 60 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 60 Hours of Missing Data 5 Hours in Period . . . 2208 Page 149of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 1 3 5 4 6 4 11 5 0 39 NNE 0 0 0 2 6 5 9 6 21 6 1 56 NE 0 2 0 5 7 11 16 20 17 4 0 82 ENE 0 1 1 3 10 12 15 2 0 0 0 44 E 0 0 0 0 4 21 21 7 6 0 0 59 ESE 0 0 1 2 6 4 9 3 9 0 0 34 SE 0 1 6 1 8 6 8 6 2 1 0 39 SSE 0 0 1 5 19 20 6 18 4 0 0 73 s 0 0 5 4 20 13 16 17 27 7 0 109 SSW 0 2 1 8 16 17 23 10 35 11 0 123 SW 0 1 5 6 7 4 14 12 13 0 1 63 WSW 0 0 1 7 19 7 13 8 14 1 0 70 w 0 3 3 3 14 12 4 7 20 8 7 81 WNW 0 0 4 3 7 10 0 11 8 7 1 51 NW 0 1 2 4 5 9 6 9 2 0 0 38 NNW 0 1 1 2 3 7 5 2 6 0 0 27 Tot 0 12 32 58 156 162 171 142 195 50 10 988 Hours of Calm o Hours of Variable Direction O Hours of Valid Data . 988 Hours of Missing Data 5 Hours in Period . . . 2208 Page 150of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range {m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 4 4 4 3 3 6 7 2 33 NNE 0 0 0 1 4 3 7 2 7 10 1 35 NE 0 0 0 2 2 9 13 6 13 1 0 46 ENE 0 2 3 0 5 15 9 13 1 1 0 49 E 0 1 2 5 2 10 18 11 7 '0 0 56 ESE 0 1 4 3 14 8 11 4 6 4 0 55 SE 0 0 1 0 5 4 4 3 15 4 0 36 SSE 0 1 1 3 4 6 10 16 27 1 0 69 s 0 1 0 0 4 8 10 18 24 11 2 78 SSW 0 0 1 1 5 9 10 22 32 6 1 87 SW 0 0 2 0 1 10 12 7 8 4 2 46 WSW 0 0 1 2 14 6 11 13 7 1 0 55 w 0 0 1 2 7 8 6 6 17 7 1 55 WNW 0 0 0 1 1 2 4 4 25 2 0 39 NW 0 0 1 1 1 8 4 7 10 1 0 33 NNW 0 0 1 2 2 3 10 4 7 0 0 29 Tot 0 6 18 27 75 113 142 139 212 60 9 801 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 801 Hours of Missing Data 5 Hours in Period . . . . . . 2208 Page 151of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKETNUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 . Total N 0 1 1 1 3 2 2 4 7 0 0 21 NNE 0 2 1 1 4 3 2 4 2 2 0 21 NE 0 1 0 2 2 0 1 0 1 0 0 7 ENE 0 1 4 1 1 1 1 1 0 0 0 10 E 0 4 1 1 2 2 2 0 0 0 0 12 ESE 0 2 3 1 0 0 1 0 2 1 0 10 SE 0 1 2 0 2 4 2 1 9 4 0 25 SSE 0 3 0 2 0 2 4 1 6 0 0 18 s 0 3 2 1 1 3 4 4 16 8 0 42 SSW 0 2 1 2 5 3 2 4 11 2 0 32 SW 0 1 0 2 3 5 6 8 1 0 0 26 WSW 0 1 2 1 6 8 5 7 9 1 1 41 w 0 0 1 3 5 8 3 1 3 1 0 25 WNW 0 0 0 1 2 1 2 0 1 0 0 7 NW 0 0 0 3 5 4 3 1 5 0 0 21 NNW 0 0 0 0 3 3 2 3 1 0 0 12 Tot 0 22 18 22 44 49 42 39 74 19 1 330 Hours of Calm 2 Hours of Variable Direction O Hours of Valid Data . 332 Hours of Missing Data 5 Hours in Period . . . 2208 Page 152 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 1 0 0 0 0 0 0 1 NNE 0 0 0 0 0 2 0 0 0 0 0 2 NE 0 0 2 0 0 1 0 0 0 0 0 3 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 1 1 0 0 0 0 2 SSE 0 0 0 0 0 0 2 0 0 0 0 2 s 0 0 0 0 0 0 1 1 0 0 0 2 SSW 0 0 0 0 0 0 0 2 0 0 0 2 SW 0 0 0 0 0 2 0 0 1 0 0 3 WSW 0 0 0 0 0 1 0 0 0 0 0 1 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 1 0 0 0 0 0 0 1 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 2 0 2 7 4 3 1 0 0 . 19 Hours of Calm 3 Hours of Variable Direction 0 Hours of Valid Data . 22 Hours of Missing Data 5 Hours in Period . . . . . . 2208 Page 153of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 All Stabilities Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 6 7 16 10 9 3 0 0 0 52 NNE 1 2 10 9 15 9 6 6 7 0 0 65 NE 1 4 5 6 20 7 1 0 0 0 0 44 ENE 0 4 5 12 19 1 0 0 0 0 0 41 E 0 3 3 9 31 18 8 3 2 0 0 77 ESE 0 5 5 7 26 36 13 8 10 0 0 110 SE 1 5 10 12 22 21 30 19 3 2 0 125 SSE 0 7 24 20 49 36 32 16 13 4 0 201 s 0 12 15 23 35 38 55 37 37 12 0 264 SSW 0 9 19 19 29 25 15 20 16 10 0 162 SW 0 5 9 26 37 18 20 19 12 0 0 146 WSW 2 8 10 12 25 13 15 9 15 0 0 109 w 0 10 10 25 61 50 68 38 28 5 0 295 WNW 0 10 12 9 41 43 38 21 40 3 0 217 NW 0 6 22 17 34 22 26 9 8 1 0 145 NNW 1 6 21 18 36 31 23 3 1 0 0 140 Tot 6 97 186 231 496 378 359 211 192 37 0 2193 Hours of Calm 12 Hours of Variable Direction O Hours of Valid Data . 2205 Hours of Missing Data 3 Hours in Period . . . . . . 2208 Page 154of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE- EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150f t Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 1 0 0 0 0 0 0 0 1 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 1 3 0 0 0 0 4 Tot 0 0 0 1 0 1 3 0 0 0 0 5 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 5 Hours of Missing Data 3 Hours in Period . . . 2208 Page 155 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 1 0 0 0 0 0 0 1 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 1 0 0 0 0 0 0 1 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 1 1 0 0 0 0 2 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 1 1 0 0 0 2 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 1 1 0 0 0 0 2 Tot 0 0 0 0 2 2 3 1 0 0 0 8 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 8 Hours of Missing Data 3 Hours in Period . . . 2208 Page 156of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 2 1 0 0 0 0 3 NNE 0 0 0 0 1 0 0 0 0 0 0 1 NE 0 0 0 0 1 0 0 0 0 0 0 1 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 1 0 0 0 1 s 0 0 0 0 0 0 0 1 0 0 0 1 SSW 0 0 0 0 0 1 1 0 0 0 0 2 SW 0 0 0 0 0 1 1 2 0 0 0 4 WSW 0 0 0 0 0 1 0 2 2 0 0 5 w 0 0 0 0 1 1 0 0 1 0 0 3 WNW 0 0 0 0 1 1 0 0 0 0 0 2 NW 0 0 0 0 2 0 1 0 0 0 0 3 NNW 0 0 0 0 0 1 0 0 0 0 0 1 Tot 0 0 0 0 6 8 4 6 3 0 0 27 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 27 Hours of Missing Data 3 Hours in Period . . . 2208 Page 157of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 1 1 1 1 4 2 0 0 0 10 NNE 0 0 5 4 0 0 2 2 6 0 0 19 NE 0 0 0 1 1 6 1 0 0 0 0 9 ENE 0 0 3 3 0 0 0 0 0 0 0 6 E 0 0 2 1 1 2 0 1 0 0 0 7 ESE 0 0 0 0 3 4 3 4 1 0 0 15 SE 0 1 3 3 3 3 6 1 0 1 0 21 SSE 0 0 1 2 4 2 5 1 1 0 0 16 s 0 1 0 2 8 1 9 13 10 2 0 46 SSW 0 1 1 0 6 7 4 6 5 3 0 33 SW 0 0 1 0 4 6 2 6 4 0 0 23 WSW 0 0 1 6 12 10 9 4 4 0 0 46 w 0 0 2 7 8 10 23 9 9 1 0 69 WNW 0 0 2 2 9 15 7 7 10 2 0 54 NW 0 1 2 4 10 7 11 0 0 0 0 35 NNW 0 0 0 1 5 10 4 1 0 0 0 21 Tot 0 4 24 37 75 84 90 57 50 9 0 430 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 430 Hours of Missing Data 3 Hours in Period . . . 2208 Page 158 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVEEFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 1 5 12 5 4 1 0 0 0 28 NNE 0 0 4 5 13 9 4 4 1 0 0 40 NE 0 0 4 3 16 1 0 0 0 0 0 24 ENE 0 2 0 7 17 1 0 0 0 0 0 27 E 0 0 0 7 29 16 8 2 2 0 0 64 ESE 0 0 3 3 15 26 9 4 9 0 0 69 SE 0 0 1 4 5 13 21 18 3 1 0 66 SSE 0 1 8 5 32 26 25 14 12 4 0 127 s 0 5 2 11 15 30 43 23 27 10 0 166 SSW 0 1 6 1 9 13 9 14 11 7 0 71 SW 0 1 3 4 8 9 14 11 8 0 0 58 WSW 0 4 1 4 9 2 6 3 9 0 0 38 w 0 4 4 12 51 38 44 28 18 4 0 203 WNW 0 4 5 5 22 27 31 14 30 1 0 139 NW 0 2 8 6 14 14 14 9 8 1 0 76 NNW 1 2 10 8 19 14 14 2 1 0 0 71 Tot 1 26 60 90 286 244 246 147 139 28 0 1267 Hours of Calm 6 Hours of Variable Direction 0 Hours of Valid Data . 1273 Hours of Missing Data 3 Hours in Period . . . . . . 2208 Page 159of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 3 1 2 2 0 0 0 0 0 8 NNE 1 1 1 0 1 0 0 0 0 0 0 4 NE 0 1 1 1 1 0 0 0 0 0 0 4 ENE 0 1 1 2 1 0 0 0 0 0 0 5 E 0 1 1 1 1 0 0 0 0 0 0 4 ESE 0 1 2 2 5 6 1 0 0 0 0 17 SE 0 2 4 5 8 4 3 0 0 0 0 26 SSE 0 5 10 11 12 8 2 0 0 0 0 48 s 0 4 9 7 9 6 3 0 0 0 0 38 SSW 0 4 7 14 12 4 1 0 0 0 0 42 SW 0 4 4 13 13 1 2 0 0 0 0 37 WSW 1 1 6 1 4 0 0 0 0 0 0 13 w 0 4 2 6 1 1 0 0 0 0 0 14 WNW 0 4 4 1 9 0 0 0 0 0 0 18 NW 0 2 6 5 8 1 0 0 0 0 0 22 NNW 0 2 8 8 12 4 1 0 0 0 0 35 Tot 2 37 69 78 99 37 13 0 0 0 0 335 Hours of Calm 2 Hours of Variable Direction O Hours of Valid Data . 337 Hours of Missing Data 3 Hours in Period . . . 2208 Page 160of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150f t Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 1 0 0 0 0 0 0 0 0 2 NNE 0 1 0 0 0 0 0 0 0 0 0 1 NE 1 3 0 1 0 0 0 0 0 0 0 5 ENE 0 1 1 0 1 0 0 0 0 0 0 3 E 0 2 0 0 0 0 0 0 0 0 0 2 ESE 0 4 0 2 3 0 0 0 0 0 0 9 SE 1 2 2 0 6 1 0 0 0 0 0 12 SSE 0 1 5 2 1 0 0 0 0 0 0 9 s 0 2 4 3 3 1 0 0 0 0 0 13 SSW 0 3 5 4 2 0 0 0 0 0 0 14 SW 0 0 1 9 12 0 0 0 0 0 0 22 WSW 1 3 2 1 0 0 0 0 0 0 0 7 w 0 2 2 0 0 0 0 0 0 0 0 4 WNW 0 2 1 0 0 0 0 0 0 0 0 3 NW 0 1 6 2 0 0 0 0 0 0 0 9 NNW 0 2 3 1 0 0 0 0 0 0 0 6 Tot 3 30 33 25 28 2 0 0 0 0 0 121 Hours of Calm 4 Hours of Variable Direction O Hours of Valid Data . 125 Hours of Missing Data 3 Hours in Period . . . 2208 Page 161of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 All Stabilities Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/sl Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 6 2 4 24 17 17 9 14 0 0 93 NNE 0 0 4 7 13 14 2 10 8 2 0 60 NE 1 0 5 4 12 13 12 2 4 4 0 57 ENE 0 1 4 2 10 11 3 0 0 0 0 31 E 0 0 4 2 13 22 25 8 7 1 0 82 ESE 0 0 2 4 11 17 19 25 13 8 1 100 SE 0 1 2 5 9 11 17 25 35 4 1 110 SSE 0 1 3 5 11 17 29 37 33 5 8 149 s 1 3 3 6 20 27 34 52 67 31 15 259 SSW 0 2 6 5 24 26 34 33 49 11 15 205 SW 0 2 2 5 27 30 33 22 26 17 5 169 WSW 0 0 3 3 18 24 29 10 28 15 5 135 w 0 2 3 4 22 43 42 33 54 17 8 228 WNW 0 2 6 4 14 27 53 47 68 29 16 266 NW 0 3 2 8 14 22 23 28 21 10 4 135 NNW 0 1 3 7 18 31 22 26 15 3 0 126 Tot 2 24 54 75 260 352 394 367 442 157 78 2205 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 2205 Hours of Missing Data 3 Hours in Period . . . 2208 Page 162of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE-EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 1 0 0 0 1 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 1 0 0 0 0 0 0 1 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 1 2 0 0 0 3 Tot 0 0 0 0 1 0 l 3 0 0 0 5 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 5 Hours of Missing Data 3 Hours in Period . . . . . . 2208 Page 163of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2 .0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 1 0 0 0 0 0 1 NE 0 0 0 0 0 1 0 0 0 0 0 1 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 1 0 1 0 0 2 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 2 0 0 2 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 1 1 0 0 0 2 Tot 0 0 0 0 0 2 2 1 3 0 0 8 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 8 Hours of Missing Data 3 Hours in Period . . . 2208 Page 164of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150f t Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 1 1 0 1 0 0 3 NNE 0 0 0 0 0 1 0 0 0 0 0 1 NE 0 0 0 0 0 1 0 0 0 0 0 1 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 2 0 0 2 SSW 0 0 0 0 0 1 0 0 0 0 0 1 SW 0 0 0 0 0 0 2 1 1 0 0 4 WSW 0 0 0 0 0 0 0 0 2 2 0 4 w 0 0 0 0 0 1 1 0 1 0 0 3 WNW 0 0 0 0 0 1 1 0 1 0 0 3 NW 0 0 0 0 0 3 0 1 0 0 0 4 NNW 0 0 0 0 0 1 0 0 0 0 0 1 Tot 0 0 0 0 0 10 5 2 8 2 0 27 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 27 Hours of Missing Data 3 Hours in Period . . . 2208 Page 165of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 1 2 2 0 5 0 0 10 NNE 0 0 2 4 1 0 0 1 3 2 0 13 NE 0 0 2 2 2 0 6 0 2 3 0 17 ENE 0 0 2 2 3 0 0 0 0 0 0 7 E 0 0 1 0 1 0 2 0 1 0 0 5 ESE 0 0 0 1 0 1 2 5 4 1 0 14 SE 0 1 1 3 2 4 3 3 2 0 0 19 SSE 0 0 0 1 5 1 2 3 0 1 1 14 s 0 1 0 2 4 2 0 8 15 6 2 40 SSW 0 1 1 0 3 7 5 5 13 2 3 40 SW 0 0 1 1 1 5 2 3 7 4 0 24 WSW 0 0 1 1 12 4 10 4 9 5 1 47 w 0 0 0 2 6 6 9 14 12 5 0 54 WNW 0 0 2 0 6 6 11 14 10 7 7 63 NW 0 1 2 4 6 9 5 10 2 0 2 41 NNW 0 0 0 0 2 8 6 2 4 0 0 22 Tot 0 4 15 23 55 55 65 72 89 36 16 430 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 430 Hours of Missing Data 3 Hours in Period . . . 2208 Page 166of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00

.sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 4 1 1 12 11 7 5 6 0 0 47 NNE 0 0 1 1 8 10 1 9 5 0 0 35 NE 0 0 1 2 6 9 6 2 2 1 0 29 ENE 0 0 2 0 5 11 3 0 0 0 0 21 E 0 0 0 1 11 18 21 8 6 1 0 66 ESE 0 0 0 1 6 12 14 16 9 7 1 66 SE 0 0 1 1 3 5 9 12 30 4 1 66 SSE 0 1 3 3 2 11 17 23 31 4 7 102 s 0 1 1 2 10 16 25 40 42 25 13 175 SSW 0 0 4 2 7 5 14 14 31 9 12 98 SW 0 0 0 1 5 4 6 7 16 12 5 56 WSW 0 0 2 2 0 4 6 2 14 8 4 42 w 0 2 1 1 10 27 27 19 38 12 8 145 WNW 0 2 2 3 6 17 35 32 57 22 9 185 NW 0 2 0 2 6 7 12 15 19 10 2 75 NNW 0 0 3 5 12 11 7 15 9 3 0 65 Tot 0 12 22 28 109 178 210 219 315 118 62 1273 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 1273 Hours of Missing Data 3 Hours in Period . . . 2208 Page 167of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 0 2 6 3 7 3 2 0 0 24 NNE 0 0 1 1 3 2 1 0 0 0 0 8 NE 1 0 0 0 3 2 0 0 0 0 0 6 ENE 0 0 0 0 2 0 0 0 0 0 0 2 E 0 0 0 1 1 4 1 0 0 0 0 7 ESE 0 0 1 1 3 3 2 4 0 0 0 14 SE 0 0 0 0 3 2 5 6 2 0 0 18 SSE 0 0 0 1 2 3 3 8 2 0 0 19 s 0 1 0 2 3 7 8 4 8 0 0 33 SSW 0 1 1 1 12 10 9 13 3 0 0 50 SW 0 0 0 1 20 17 15 9 1 1 0 64 WSW 0 0 0 0 3 10 4 4 1 0 0 22 w 0 0 2 1 4 5 4 0 1 0 0 17 WNW 0 0 1 0 1 3 6 1 0 0 0 12 NW 0 0 0 1 2 3 5 2 0 0 0 13 NNW 0 0 0 1 4 9 6 6 2 0 0 28 Tot 1 3 6 13 72 83 76 60 22 1 0 337 Hours of Calm 0 Hours of Variable Direction O Hours of Valid Data . 337 Hours of Missing Data 3 Hours in Period . . . 2208 Page 168of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 1 1 5 0 0 0 0 0 0 8 NNE 0 0 0 1 1 0 0 0 0 0 0 2 NE 0 0 2 0 1 0 0 0 0 0 0 3 ENE 0 1 0 0 0 0 0 0 0 0 0 1 E 0 0 3 0 0 0 1 0 0 0 0 4 ESE 0 0 1 1 2 1 1 0 0 0 0 6 SE 0 0 0 1 1 0 0 4 1 0 0 7 SSE 0 0 0 0 2 2 7 3 0 0 0 14 s 1 0 2 0 3 2 1 0 0 0 0 9 SSW 0 0 0 2 2 3 6 1 2 0 0 16 SW 0 2 1 2 1 4 7 2 0 0 0 19 WSW 0 0 0 0 3 6 9 0 2 0 0 20 w 0 0 0 0 2 4 1 0 0 0 0 7 WNW 0 0 1 1 0 0 0 0 0 0 0 2 NW 0 0 0 1 0 0 1 0 0 0 0 2 NNW 0 1 0 1 0 2 1 0 0 0 0 5 Tot 1 5 11 11 23 24 35 10 5 0 0 125 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 125 Hours of Missing Data 3 Hours in Period . . . . . . 2208 Page 169of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE-EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 All Stabilities Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0 .50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 3 1 12 13 10 9 31 8 2 90 NNE 0 2 2 4 5 12 11 6 17 10 1 70 NE 0 1 2 4 9 7 11 12 9 0 0 55 ENE 0 1 3 3 6 8 9 6 0 0 0 36 E 0 1 1 1 6 9 16 20 20 5 1 BO ESE 0 1 2 0 8 6 9 18 34 5 B 91 SE 0 2 2 6 6 9 10 20 51 16 4 126 SSE 0 1 1 1 6 10 12 14 53 28 12 138 s 0 0 2 3 12 13 9 33 74 51 50 247 SSW 0 1 5 3 6 8 14 26 56 35 27 181 SW 0 1 1 5 10 7 17 28 62 27 19 177 WSW 0 1 5 4 17 15 23 24 39 25 13 166 w 0 2 2 2 13 27 38 33 64 51 23 255 WNW 0 2 0 5 13 14 28 36 71 41 38 248 NW 0 0 5 3 7 19 13 18 37 17 5 124 NNW 0 0 0 2 6 25 23 16 35 14 0 121 Tot 0 17 36 47 142 202 253 319 653 333 203 2205 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 2205 Hours of Missing Data 3 Hours in Period . . . 2208 Page 170of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range {m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 1 0 0 0 0 0 0 1 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 0 1 0 0 0 0 0 0 1 Hours of Calm 0 Hours of Variable Direction 0 Hours of Valid Data . 1 Hours of Missing Data 3 Hours in Period . . . 2208 Page 171 of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 0 0 0 0 0 0 Tot 0 0 0 0 0 0 0 0 0 0 0 0 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . O Hours of Missing Data 3 Hours in Period . . . . . . 2208 Page 172of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 1 0 0 0 1 NNE 0 0 0 0 0 1 0 0 0 0 0 1 NE 0 0 0 0 0 1 0 0 0 0 0 1 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 0 0 0 s 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 1 1 1 0 3 WSW 0 0 0 0 0 0 0 0 0 0 2 2 w 0 0 0 0 0 0 3 2 2 1 0 8 0 0 0 1 0 0 0 2 1 1 0 5 NW 0 0 0 0 0 1 0 1 1 0 0 3 NNW 0 0 0 0 0 0 3 2 1 0 0 6 Tot 0 0 0 1 0 3 6 9 6 3 2 30 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 30 Hours of Missing Data 3 Hours in Period . . . . . . 2208 Page 173of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 1 1 4 7 5 2 9 0 0 29 NNE 0 1 2 4 1 6 2 1 8 7 1 33 NE 0 0 2 4 7 1 6 4 1 0 0 25 ENE 0 0 3 1 5 4 1 2 0 0 0 16 E 0 0 1 0 4 5 11 10 14 5 1 51 ESE 0 0 2 0 3 3 5 8 14 2 8 45 SE 0 1 1 3 2 5 5 10 25 12 2 66 SSE 0 0 1 1 4 6 4 7 22 8 9 62 s 0 0 1 2 3 6 2 19 39 14 28 114 SSW 0 1 1 1 5 7 7 8 18 10 8 66 SW 0 1 0 3 3 2 5 5 11 8 5 43 WSW 0 0 4 3 11 5 6 5 17 19 7 77 w 0 1 0 0 7 24 23 21 46 30 22 174 WNW 0 0 0 2 10 10 19 26 46 34 37 184 NW 0 0 4 2 5 15 8 15 21 13 5 88 NNW 0 0 0 2 3 16 9 6 17 5 0 58 Tot 0 5 23 29 77 122 118 149 308 167 133 1131 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 1131 Hours of Missing Data 3 Hours in Period . . . 2208 Page 174of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 1 0 5 3 3 2 10 1 0 26 NNE 0 1 0 0 0 2 6 2 7 3 0 21 NE 0 0 0 0 1 4 3 7 8 0 0 23 ENE 0 1 0 1 0 3 7 4 0 0 0 16 E 0 1 0 0 1 4 4 9 6 0 0 25 ESE 0 0 0 0 2 3 4 6 18 2 0 35 SE 0 1 0 2 3 3 3 6 19 3 2 42 SSE 0 1 0 0 1 4 5 3 20 19 3 56 s 0 0 0 0 6 5 5 10 34 33 22 115 SSW 0 0 2 1 1 0 6 12 25 20 19 86 SW 0 0 0 0 6 2 4 6 19 12 13 62 WSW 0 0 0 1 2 5 6 5 5 2 4 30 w 0 1 1 2 4 1 4 5 11 20 1 50 WNW 0 2 0 1 0 3 9 5 20 5 1 46 NW 0 0 1 0 0 2 4 2 11 4 0 24 NNW 0 0 0 0 2 6 5 4 9 5 0 31 Tot 0 9 5 8 34 50 78 88 222 129 65 688 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 688 Hours of Missing Data 3 Hours in Period . . . 2208 Page 175 ofl78

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range {m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1. 0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 1 0 3 3 2 3 12 7 2 33 NNE 0 0 0 0 4 3 3 0 2 0 0 12 NE 0 0 0 0 1 1 2 1 0 0 0 5 ENE 0 0 0 0 1 1 1 0 0 0 0 3 E 0 0 0 0 1 0 1 1 0 0 0 3 ESE 0 1 0 0 1 0 0 4 2 1 0 9 SE 0 0 0 0 0 1 2 4 6 1 0 14 SSE 0 0 0 0 1 0 3 0 6 1 0 11 s 0 0 0 0 1 2 1 4 1 4 0 13 SSW 0 0 1 1 0 1 0 5 12 5 0 25 SW 0 0 1 2 1 3 5 11 24 3 0 50 WSW 0 1 1 0 4 5 11 13 13 3 0 51 w 0 0 1 0 2 1 8 5 3 0 0 20 WNW 0 0 0 1 2 1 0 3 3 1 0 11 NW 0 0 0 0 2 1 1 0 4 0 0 8 NNW 0 0 0 0 0 2 3 3 5 4 0 17 Tot 0 2 5 4 24 25 43 57 93 30 2 285 Hours of Calm O Hours of Variable Direction O Hours of Valid Data . 285 Hours of Missing Data 3 Hours in Period . . . 2208 Page 176of178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTNE EFFLUENT RELEASE REPORT January through December 2016 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2016 - 2016 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 300ft Stability 300ft Wind Wind Speed Range (m/s)

Direction 0.5- 1.1- 1.6- 2.1- 3.1- 4.1- 5.1- 6.1- 8.1- >10.00 Sector <0.50 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 0 0 0 0 0 0 1 0 0 0 1 NNE 0 0 0 0 0 0 0 3 0 0 0 3 NE 0 1 0 0 0 0 0 0 0 0 0 1 ENE 0 0 0 1 0 0 0 0 0 0 0 1 E 0 0 0 1 0 0 0 0 0 0 0 1 ESE 0 0 0 0 2 0 0 0 0 0 0 2 SE 0 0 1 1 1 0 0 0 1 0 0 4 SSE 0 0 0 0 0 0 0 4 5 0 0 9 s 0 0 1 1 2 0 1 0 0 0 0 5 SSW 0 0 1 0 0 0 1 1 1 0 0 4 SW 0 0 0 0 0 0 3 5 7 3 1 19 WSW 0 0 0 0 0 0 0 1 4 1 0 6 w 0 0 0 0 0 1 0 0 2 0 0 3 WNW 0 0 0 0 0 0 0 0 1 0 0 1 NW 0 0 0 1 0 0 0 0 0 0 0 1 NNW 0 0 0 0 1 1 3 1 3 0 0 9 Tot 0 1 3 5 6 2 8 16 24 4 1 70 Hours of Calm O Hours of Variable Direction 0 Hours of Valid Data . 70 Hours of Missing Data 3 Hours in Period . . . 2208 Page 177 of 178

DRESDEN NUCLEAR POWER STATION 2016 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2016 ERRATA DOCKET NUMBERS: 50-010/50-237/50-249 Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear Errata Page 178of178

SVPLTR 17-0017, Submittal of 2016 Radioactive Effluent Release Report

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