SVPLTR 12-0222, Annual Radioactive Effluent Release Report

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Annual Radioactive Effluent Release Report
ML12121A582
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 04/26/2012
From:
Exelon Generation Co, Exelon Nuclear
To:
NRC/FSME, Office of Nuclear Reactor Regulation
References
SVPLTR # 12-0222
Download: ML12121A582 (122)
v • d • e


Text

DNPS 2011 Annual Radioactive Effluent Release Report

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT DOCKET NUMBERS: 50-010/50-237/50-249 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT, SUPPLEMENTAL INFORMATION 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, Iodine-133, and all radionuclides in particulate form with half-lives greater than 8 days:

Dose Rate (site)

1) Less than 1500 mrem/year.

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. 40CFR 190 and IOCFR72 (all uranium fuel cycle operations in the region):

I) 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. Maximum Permissible Concentrations 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 12.3.1 to 10 times the concentration specified in 10CFR20 Appendix B, Table 2, Column 2 for radionuclides other than dissolved or entrained noble gases and 2.OOE-04 ,tCi/ml total activity for all dissolved or entrained noble gases.

Page 1 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT DOCKET NUMBERS: 50-010/50-237/50-249 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT, SUPPLEMENTAL INFORMATION 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 rnrem per year to the total body and less than or equal to 3,000 mr'em 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 (2) 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. lodines:
c. Particulates:
d. Tritium:
e. Gross Alpha The 1 Chimney, 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, measured flow at the release points is used to calculate the curies released. For the I Chimney and Chemical Cleaning Building effluents, 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, and Fe-55. Batch release volume is based on LPCI heat exchanger volume.

Page 2 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT DOCKET NUMBERS: 50-010/50-237/50-249 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT, SUPPLEMENTAL INFORMATION Facility: Dresden Nuclear Power Station Units 1,23 Licensee: Exelon Nuclear

h. Estimated Total Errors:

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 / Unmonitored Releases described below)
a. Liquid - Radwaste Liquid Effluents - None
b. Liquid - Containment Cooling Service Water (LPCI)
1. Number of batch releases: 7
2. Total time period for batch releases: 8.68E+00 minutes
3. Maximum time period for a batch release: 1.24E+00 minutes
4. Average time period for a batch release: 1.24E+00 minutes
5. Minimum time period for a batch release: 1.24E+00 minutes
6. Average stream flow during periods of release of effluent into a flowing stream: 1.24E+06 lpm
c. Gaseous - None
6. Abnormal Releases*
a. Liquid
1. Number of releases: 0
2. Total activity released: 0.OOE+00 Ci
b. Gaseous
1. Number of releases: 0
2. Total activity released: 0.OOE+00 Ci
7. Summary of Offsite Dose Calculation Manual (ODCM) Changes by Dresden Nuclear Power Station (DNPS) in 2011:

Revision 11 of the ODCM was issued on April 14, 2011. The revision was issued to implement the dose calculation methodology specified in NUREG 0133. The use of new dose calculation software, OpenEMS, was also implemented at that time. OpenEMS was utilized to prepare the 2011 ARERR. Additionally, the revision updates meteorogical parameters.

  • These releases are included in the Effluents Summation of all Releases Tables and in the Radiological Impact on Man.

Page 3 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT DOCKET NUMBERS: 50-010/50-237/50-249 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT, SUPPLEMENTAL INFORMATION Facility: Dresden Nuclear Power Station Units 1,2,3 Licensee: Exelon Nuclear

8. Unmonitored Releases*
a. Liquid
1. Number of releases: 2
2. Total activity released: 5.01E-03 Ci b, Gaseous
1. Number of releases: 5
2. Total activity released: 2.01E-02 Ci
a. I Water in on-site storm sewers is routinely sampled and analyzed for tritium content. The highest storm drain concentrations measured during each calendar month of 2011 was used to calculate the released activity for each month. The total activity released is based on an estimated typical discharge flow of 10 gallons per minute.

Tritium was detected in the storm sewers only during the months of June and October. An estimated 5.01E-03 Ci of tritium was released to the environment during 2011.

b, I The Unit 1 Main Turbine Floor is used as an area to work on contaminated equipment. The ventilation system is no longer operational and the floor is at ambient pressure with the outside environment. With radiological work activities being performed on the Unit 1 Main Turbine Floor, the potential exists for airborne activity to be released to the environment through various points. Based on the work normally performed in this area, an estimated 3.60E-05 Ci of Cs-137 was released from this area during 2011.

b.2 The Chemistry Laboratory Ventilation System exhausts directly into the environment and is not monitored.

Based on an evaluation of activities performed in the area, the estimated activity released to the environment from the laboratory in 2011 is 6.93E-05 Ci of noble gases and 2.86E-06 Ci of iodines and particulates.

b.3 The access door on a 2/3 Chimney duct was found ajar on August 14, 2009. The door was closed on the same day, but a small amount of leakage (<100 scfm) continues. Released activity was determined using the duration of the leakage (the entire year), 100 scfm, and measurements of activity released from the 2/3 Chimney. An estimated 5.36E-03 Ci tritium, 6.99E-08 Ci of noble gases and 2.55E-06 Ci of iodines and particulates, for a total of 5.36E-03Ci was released to the environment during 2011.

b.4 Past radiological surveys have identified low-level contamination in the East Turbine Building Ventilation ductwork. This system vents directly to the environment and is not monitored. Based on the highest activities detected during a survey of the system and the estimated area of the system surface, an estimated 3.17E-06 Ci Co-60 and 2.40E-06 Ci of Cs-137, for a total of 5.57E-06 Ci was released to the environment from this system during 2011.

b.5 The Unit 2/3 Heating Steam System has been contaminated in the past. The system continues to contain low-level tritium contamination. During normal operation, the condensate is converted to steam, a portion of which gets vented to the atmosphere. An estimated 1.46E-02 Ci tritium was released to the environment during 2011.

9. Errata Corrections to pages 5 and 11 of 123 of the 2010 Annual Radioactive Effluent Release Report have been made and are included at the end of this report. The corrections on these pages included the addition of Carbon-14 to the tables.
  • These releases are included in the Effluents Summation of all Releases Tables and in the Radiological Impact on Man.

Page 4 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES DOCKET NUMBERS: 50-010/50-237/50-249 Uits is 2n3rd4t Quarter Quarter Est. Total Units Quarter Quarter Estor, %

A. Fission & activation gases

1. Total release Ci 7.60E+00 7.95E+00 9.25E+00 6.96E+00 1.31E+01
2. Average release rate for period gCi/sec 9.64E-01 1.01E+00 1. 17E+00 8.83E-01
3. Percent of ODCM dose limit %y 7.34E-03 8.06E-03 9.15E-03 6.76E-03

%p3 1.46E-04 1.60E-04 1.82E-04 1.31E-04 B. lodines

1. Total iodine-131 Ci 1.84E-04 2.36E-04 3.08E-04 3.57E-04 2.60E+01
2. Average release rate for period (1-131) tCi/sec 2.33E-05 3.OOE-05 3.91E-05 4.53E-05
3. Percent of ODCM dose limit  % 2.71E-01 2.71E-01 2.73E-01 2.95E-01 C. Particulates
1. Particulates with half-lives > 8 days Ci 7.56E+00 7.56E+00 7.56E+00 7.56E+00 2.94E+01
2. Average release rate for period uCi/sec 9.59E-01 9.59E-01 9.59E-01 9.59E-01
3. Percent of ODCM dose limit *% 2.71E-01 2.71E-01 2.73E-01 2.95E-01 D. Tritium
1. Total release Ci 5.62E+00 7.34E+00 2.62E+00 3.64E+00 7.56E+00
2. Average release rate for period gCi/sec 7.12E-01 9.32E-01 3.33E-01 4.61E-01
3. Percent of ODCM dose limit *  % 2.71E-01 2.71E-01 2.73E-01 2.95E-01 E. Gross Alpha
1. Total release Ci <LLD <LLD <LLD <LLD 2.94E+O1
2. Average release rate for period LtCi/sec I O.OOE+00 O.OOE+00 i O.OOE+O0 i O.OOE+00
3. Percent of ODCM dose limit  % I N/A N/A N/A N/A F. Carbon- 14
1. Total release Ci 7.56E+00 I 7.56E+00 I 7.56E+00 7.56E+00
2. Average release rate for period pCi/sec 9.59E-01 9.59E-01 9.59E-01 9.59E-01
  • Percent of ODCM dose limit indicates combined total of lodines, Particulates, and Tritium Page 5 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES DOCKET NUMBERS: 50-010/50-237/50-249 TABLE OF LOWER LIMITS OF DETECTABILITY FOR GASEOUS EFFLUENTS

1. FISSION / ACTIVATION GASES ýtCi/cc Kr-87 1.00E-04 Kr-88 1.00E-04 Xe- 133 1.00E-04 Xe-133m 1.00E-04 Xe-135 1.00E-04 Xe- 138 1.00E-04
2. IODINES ,tCi/cc 1-131 1.00E-12 1-133 1.00E-10
3. PARTICULATES ltCi/cc Sr-89 1.00E- 1I Sr-90 1.00E-11 Mn-54 1.OOE- 11 Co-58 I.OOE- 1I Fe-59 1.OOE- 11 Co-60 1.00E-l11 I.OOE- II 1.00E- 11 Zn-65 Mo-99 1.OOE- 11 Cs- 134 1.OOE- 1I Cs-137 1.OOE- 11 Ce- 141 1.00E- 11 Ce- 144 1.00E- 11
4. OTHER ltCi/cc H-3 1.00E-06 Gross Alpha 1.OOE- 11 The above values are the ODCM-required LLDs. The actual analyses always met the required LLDs.

Page 6 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNIT I MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBER: 50-010 xx ELEVATED RELEASES CONTINUOUS MODE Nuclides Released Unit I" Quarter 2 "dQuarter 3rd Quarter 4"' Quarter TOTAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 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 1-131 Ci 1.54E-06L* 1.19E-06L* <LLD <LLD 2.73E-06"*

1-133 Ci <LLD <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 1.54E-06** 1.19E-06** <LLD <LLD 2.73E-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 <LLD <LLD Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 5.04E-07 1.1OE-06 6.37E-07 <LLD 2.24E-06 Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag-110m Ci <LLD <LLD <LLD <LLD <LLD 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 Total for period Ci 5.04E-07 1.10E-06 6.37E-07 <LLD 2.24E-06
4. Tritiurn Total for period Ci None* None* None* None* None*
  • Analysis not required per Dresden Station ODCM
    • 1-131 detected as a result of fallout from Fukushima Daiichi plant emissions Page 7 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNIT I MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBER: 50-010 xx ELEVATED RELEASES BATCH MODE Nuclides Released I Unit 1St Quarter 2 nd Quarter 3d Quarter 4ih Quarter TOTAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 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. lodines 1-131 Ci 1-133 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-60 Ci Zn-65 Ci Mo-99 Ci Ag-110m Ci Cs- 134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Total for period Ci None* None* None* None* None*
4. Tritium Total for period I Ci None* None* None* None* None*
  • No batch releases via this release path Page 8 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNITS 2/3 REACTOR BUILDING VENT GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 xx MIXED-MODE RELEASES CONTINUOUS MODE Nuclides Released I Unit I"1Quarter 2 "d Quarter 3 rd Quarter 4"' Quarter TOTAL

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-133 Ci <LLD <LLD <LLD <LLD <LLD Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci <LLD <LLD <LLD 6.12E-06 6.12E-06 Xe-135m Ci <LLD <LLD <LLD <LLD <LLD Xe-138 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD <LLD <LLD <LLD
2. Jodines 1-131 Ci 7.76E-06 4.64E-06 <LLD 6.84E-07 1.31E-05 1-133 Ci <LLD <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 7.76E-06 4.64E-06 <LLD 6.84E-07 1.31E-05
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 2.33E-06 2.33E-06 Mn-54 Ci 3.25E-06 <LLD <LLD 1.88E-05 2.21 E-0S Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 1.89E-05 4.32E-06 1.14E-05 8.40E-05 1.19E-04 Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag- 110m Ci <LLD <LLD <LLD <LLD <LLD 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 Total for period Ci 2.22E-05 4.32E-06 1.14E-05 1.05E-04 1.43E-04
4. Tritium Total for period Ci 5.87E-0 I 1.61E+00 3.07E-01 5.82E-01 3.09E+00 Page 9 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNITS 2/3 REACTOR BUILDING VENT GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 xx MIXED-MODE RELEASES BATCH MODE Nuclides Released I Unit Is' Quarter 2 nd Quarter 3 rd Quarter 4 h Quarter TOTAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 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. lodines 1-131 Ci 1-133 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-60 Ci Zn-65 Ci Mo-99 Ci Ag-110m Ci Cs-134 Ci Cs- 137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Total for period Ci None* None* None* None* None*
4. Tritium Total for period Ci None* None* None* None* None*
  • No batch releases via this release path Page 10 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNITS 2/3 MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 xx ELEVATED RELEASES CONTINUOUS MODE Nuclides Released I Unit I 1 s' Quarter 2 nd Quarter 3rd Quarter 4 th Quarter TOTAL

1. Fission and Activation Gases Ar-41 Ci 7.95e-01 7.19E-01 7.84E-01 9.47E-01 3.25E+00 Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-85m Ci 1.53E-01 1.27E-01 1.87E-01 2.25E-01 6.92E-01 Kr-87 Ci 2.21E-01 2.28E-01 2.60E-01 1.52E-01 8.61 E-0I Kr-88 Ci 1.75E-01 1.39E-01 1.71E-01 1.35E-01 6.20E-01 Xe- 133 Ci 6.43E-01 3.15E-01 4.97E-01 5.92E-01 2.05E+00 Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci 2.61E-O1 1.66E-01 2.07E-01 1.42E-01 7.75E-01 Xe-135m Ci 1.04E+00 1.24E+00 1.45E+00 9.51E-01 4.68E+00 Xe-138 Ci 4.31E+00 5.02E+00 5.70E+00 3.81E+00 1.88E+01 Total for period Ci 7.60E+00 7.95E+00 9.25E+00 6.96E+00 3.18E+01
2. lodines 1-131 Ci 1.72E-04 2.29E-04 3.08E-04 3.56E-04 1.07E-03 1-133 Ci 5.81E-04 8.89E-04 1.34E-03 1.78E-03 4.59E-03 1-135 Ci <LLD <LLD 2.42E-05 2.80E-05 5.22E-05 Total for period Ci 7.53E-04 1.12E-03 1.67E-03 2.17E-03 5.71E-03
3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci 4.76E-05 5.46E-05 5.37E-05 9.76E-05 2.54E-04 Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci 1.58E-5 1.95E-05 4.62E-05 1.05E-04 1.87E-04 Co-58 Ci <LLD 7.03E-07 1.03E-05 3.43E-05 4.53E-05 Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 3.02E-05 7.45E-05 2.07E-04 3.78E-04 6.90E-04 Zn-65 Ci <LLD 3.90E-05 1.08E-04 1.99E-04 3.45E-04 Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag- 110m Ci <LLD <LLD 2.39E-06 <LLD 2.39E-06 Cs-134 Ci <LLD <LLD <LLD <LLD <LLD Cs-137 Ci <LLD <LLD 1.95E-06 <LLD 1.95E-06 Ba- 140 Ci 5.85E-05 4.36E-05 1.35E-04 1.21E-04 3.58E-04 Ce- 141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 1.52E-04 2.32E-04 5.64E-04 9.35E-04 1.88E-03
4. Tritium Total for period Ci 5.03E+00 5.73E+00 2.3 1E+00 3.04E+00 1.61E+01
5. Gross Alpha Total for period Ci <LLD <LLD <LLD <LLD <LLD
6. Carbon-14 Total for period Ci 7.56E+00 7.56E+00 7.56E+00 7.56E+00 3.02E+01 Page 11 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNITS 2/3 MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 xx ELEVATED RELEASES BATCH MODE Nuclides Released I Unit I1'Quarter 2 "d Quarter 3rd Quarter 4"' Quarter TOTAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 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. lodines 1-131 Ci 1-133 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-60 Ci Zn-65 Ci Mo-99 Ci Ag-110m Ci Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 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 12 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT.

January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 CHEMICAL CLEANING BUILDING GASEOUS EFFLUENTS DOCKET NUMBERS: 50-010 xx MIXED-MODE RELEASES CONTINUOUS MODE Nuclides Released Unit I"'Quarter 2 "' Quarter 3 rd Quarter 41h Quarter TOTAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 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. lodines 1-1311 Ci 1.93E-06** 1.15E-06** <LLD <LLD 3.08E-06**

1-133 Ci <LLD <LLD <LLD <LLD <LLD 1-135 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 1.93E-06** 1.15E-06** <LLD <LLD 3.08E-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 <LLD <LLD Co-5 8 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 5.22E-07 6.37E-07 2.21E-07 1.15E-07 1.50E-06 Zn-65 Ci <LLD <LLD <LLD <LLD <LLD Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag- 110m Ci <LLD <LLD <LLD <LLD <LLD 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 Total for period Ci 5.22E-07 6.37E-07 2.21E-07 1.15E-07 1.50E-06
4. Tritium Total for period Ci None* None* None* None* None*
  • Analysis not required per Dresden Station ODCM
    • 1-131 detected as a result of fallout from Fukushima Daiichi plant emissions Page 13 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 CHEMICAL CLEANING BUILDING GASEOUS EFFLUENTS DOCKET NUMBERS: 50-010 xx MIXED-MODE RELEASES BATCH MODE Nuclides Released I Unit I 1S Quarter 2nd Quarter 3 rd Quarter 4th Quarter TOTAL

1. Fission and Activation Gases Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 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 1-131 Ci 1-133 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-60 Ci Zn-65 Ci Mo-99 Ci Ag- 110m Ci Cs-134 Ci Cs-137 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci Total for period Ci None* None* None* None* None*
4. Tritium Total for period Ci None* None* None* None* None*
  • No batch releases via this effluent path Page 14.of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES DOCKET NUMBERS: 50-010/50-237/50-249 nis Units Ist Quarter 2 nd Quarter 3 rd Quarter 4th Est. Total Quarter Error, %

A. Fission and activation products I. Total release (not including H-3, gases, alpha) Ci 7.93E-07 <LLD 9.23E-07 1.04E-05 1.95E+01

2. Average diluted concentration during period [XCi/ml 3.46E- 16 <LLD 3.94E- 16 4.38E-15 Percent of applicable dose limit Organ 1.00E-09 N/A 2.07E-10 4.16E-07 3.

WB 5.61E-10 N/A 6.94E-14 8.79E-07 B. Tritium

1. Total release Ci <LLD 1.64E-03 <LLD 3.38E-03 2.37E+00
2. Average diluted concentration during period J Ci/mrl <LLD 6.85E-13 <LLD 1.42E-12
3. Percent of release concentration limit (3.OE-03)  % N/A 2.28E-08 N/A 4.73E-08 C. Dissolved and entrained gases
1. Total release Ci <LLD <LLD <LLD 3.82E-04 2.03E+01
2. Average diluted concentration during period Ci/ml <LLD <LLD <LLD 1.60E-13
3. Percent of release concentration limit (2.OE-04)  % N/A N/A N/A 8.OOE-08 D. Gross alpha activity

-1. Total release I Ci <LLD I <LLD I <LLD I <LLD I 2.OOE+01I E. Volume of waste released (prior to dilution) Liters 1.64E+04 1.64E+06 3.29E+04 1.70E+06]

F. Volume of dilution water used during eriod Liters 2.29E+12 2.39E+12 2.34E+12 2.38E+12 Page 15 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES DOCKET NUMBERS: 50-010/50-237/50-249 TABLE OF LOWER LIMITS OF DETECTABILITY FOR LIQUID EFFLUENTS

1. FISSION/ACTIVATION GASES utCi/ml Kr-87 1.00E-05 Kr-88 1.00E-05 Xe-133 1.00E-05 Xe-133m 1.00E-05 Xe-135 1.OOE-05 Xe- 138 1.00E-05
2. IODINES [iCi/ml 1-131 1.00E-06
3. PARTICULATES utCi/ml Fe-55 1.00E-06 Sr-89 5.OOE-08 Sr-90 5.OOE-08 Mn-54 5.OOE-07 Co-58 5.00E-07 Fe-59 5.OOE-07 Co-60 5.OOE-07 Zn-65 5.OOE-07 Mo-99 5.OOE-07 Cs- 134 5.OOE-07 Cs- 137 5.OOE-07 Ce-141 5.OOE-07 Ce- 144 5.OOE-06
4. OTHER [Ci/ml H-3 1.00E-05 Gross Alpha 1.00E-07 The above values are the ODCM-required LLDs. The actual analyses always met the required LLDs.

Page 16 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNITS 2/3 RADWASTE LIQUID EFFLUENTS DOCKET NUMBERS: 50-237/50-249 BATCH MODE Unit 1" Quarter 2 nd Quarter 3 rd Quarter 4 th Quarter Total Fe-55 Ci _______ ______

Sr-89 Ci _______

Sr-90 Ci ___ ___

1-131 Ci ___ ___

1-133 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-99mn Ci _____

Ru- 103 Ci ______ __ ____

Ag-11rn 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-133mn Ci ______

Xe-135 Ci _______ _____________

Xe-138 Ci _____ _____ ______ _ _ _ _ _ _ _ ____

Total Ci None* None* None* None* None*

  • No batch releases via this effluent path Page 17 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNITS 2/3 RADWASTE LIQUID EFFLUENTS DOCKET NUMBERS: 50-237/50-249 CONTINUOUS MODE Unit 1 st Quarter 2 nd Quarter 3 rd Quarter 4 th Quarter Total Fe-55 Ci ______ ______ _______ ____ ___

Sr-89 Ci ______ ______ __________ ___

Sr-90 Ci ______ ______ ___ ___

1-131 Ci _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

1-133 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-110rn Ci ______ ______ ______

Sb-124 Ci _ _ _ _ _ _ _ _ _ _ _ _ ______

Cs-134 Ci _ _ _ _ _ _ _ _ _ _ _ _ ______

Cs-136 Ci _____ _____ _ _ _ _ _

Cs-137 Ci ______ ______ __ ____

Ba-140 Ci _ _ _ _ _ _ _ _ _ _ _ _ ______

Ce-141 Ci _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Total I 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 I Ci ______ ______ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Total I Ci None* None* None* None* None*

  • No continuous releases via this effluent path Page 18 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNITS 2/3 CONTAINMENT COOLING SERVICE WATER DOCKET NUMBERS: 50-237/50-249 BATCH MODE Unit 1't Quarter 2nd Quarter 3rd Quarter 4t Quarter Total 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 1.55E-06 <LLD <LLD 7.03E-06 8.57E-06 Co-58 Ci <LLD <LLD <LLD <LLD <LLD Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 1.68E-06 <LLD <LLD 4.17E-05 4.34E-05 Zn-65 Ci 4.OOE-06 <LLD <LLD <LLD 4.OOE-06 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-110m 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 7.22E-06 <LLD <LLD 4.87E-05 5.60E-05 H-3 Ci <LLD <LLD <LLD 5.19E-03 5.19E-03 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 <LLD <LLD <LLD 5.19E-03 5.19E-03 Page 19 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 UNITS 2/3 CONTAINMENT COOLING SERVICE WATER DOCKET NUMBERS: 50-237/50-249 CONTINUOUS MODE Unit 1It Quarter 2 dQuarter 3rd Quarter 4"' Quarter Total Fe-55 Ci _______ ______

Sr-89 Ci _____________ ___ ___

Sr-90 Ci _____________ ___ ___

1-131 Ci _______ ______

1-133 Ci _____________ ___ ___

1-135 Ci ______ ______

Cr-5I Ci ______ ______

Mn-54 Ci ____________

Co-5 8 Ci ______ ______

Fe-59 Ci _______

Co-60 Ci ___ ___

Zn-65 Ci __________ ___

Zr-95 Ci ___ ___

Mo-99 Ci ______ ______

Tc-99m Ci ______ _ _ _ _

Ru-103 Ci ______

Ag-I 10mn 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 j None* J None* j None* None* None*

  • No continuous releases via this effluent path Page 20 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not irradiated fuel)

1. Type of Waste Unit 12-month Period Est. Total Error, %
a. Spent resins, filter sludges / filters, evaporator m3 9.68E+O I bottoms, etc. Ci 2.58E+02
b. Dry compressible waste, contaminated equipment, etc. m3 1.91E+03 (includes some contaminated liquids) Ci 1.57E+00
c. Irradiated components, control rods, etc. m3 CiO.OOE+00 O.OE+002.50E+01
d. Other (describe) - Contaminated Oil, Combined i3 8.56E+01 2.50E+01 Packages, Pump Impeller PcaePmImer Ci 62.50E+01 6.11lE-01 __________
2. Estimate of Major (i.e., Ž1%) Nuclide Composition (by type of waste)
a. Spent resins, filters / filter sludges, evaporator bottoms, etc.

Percent % Curies Fe-55 7.67E+01 1.98E+02 Co-60 1.46E+01 3.77E+O1 Mn-54 3.53E+00 9.13E+00 Zn-65 3.06E+00 7.91E+00 Cs-137 1.26E+00 3.26E+00 Shipment type: LSA, Type A, Type B Solidification agent or absorbent: None

b. Dry compressible waste, contaminated equipment, etc.

Percent % Curies Fe-55 5.47E+01 8.61E-01 Co-60 1.93E+01 3.04E-01 Mn-54 1.59E+01 2.5 1E-01 Zn-65 5.29E+00 8.33E-02 Ni-63 1.41E+00 2.21 E-02 Cs-137 1.15E+00 1.81E-02 Shipment type: LSA Solidification agent or absorbent: None

c. Irradiated components, control rods, etc.

Percent % Curies NONE O.OOE+00 O.OOE+00

d. Other - Contaminated Oil, Combined Packages, Pump Impeller Percent % Curies Fe-55 4.59E+01 2.8 IE-01 Zn-65 2.63E+01 1.61E-01 Co-60 1.60E+01 9.81E-02 Mn-54 4.43E+00 2.71E-02 CR-51 4.36E+00 2.67E-02 Co-58 2.43E+00 1.49E-02 Shipment type: Limited Quantity, LSA Solidification agent or absorbent: None Page 21 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2011 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2011 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS

2. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 37 Motor freight (exclusive use only) Energy Solutions - Bear Creek Road, Oak Ridge, TN 14 Motor freight (exclusive use only) Energy Solutions - Clive, UT 6 Motor freight (exclusive use only) Energy Solutions - Gallaher Road, Kingston, TN 8 Rail freight Energy Solutions - Clive, UT B. IRRADIATED FUEL SHIPMENTS (Disposition)

Number of Shipments Mode of Transportation Destination None (NA) (NA)

C. CHANGES TO THE PROCESS CONTROL PROGRAM (PCP)

No changes were made to the DNPS radioactive liquid, gaseous, or solid waste treatment systems in 2011.

Page 22 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT RADIOLOGICAL IMPACT ON MAN*

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

1. Liquid Dose to a Member of the Public for 2011 Total Body: 1.32E-06 mrem Organ: 2.08E-06 mrem
2. Gaseous Dose to a Member of the Public for 2011 Total Body: 1.82E-02 mrem Skin: 2.00E-04 mrem Organ (Particulate/Iodine): 8.32E-02 mrem
3. Direct Radiation Dose to a Member of the Public for 2011 Total Body: 8.36E+00 mrem This is 33.4 % of 40CFRI90 Limit of 25 mreni/year (Whole Body and Organ). Thyroid dose is 0.03 % of 40CFR190 Limit (75 mrem).
4. Total Body Doses to the Population and Average Doses to Individuals in the Population from All Receiving-Water-Related-Pathways: Not applicable for DNPS. 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: Not applicable for DNPS.
6. Doses From Liquid and Gaseous Effluent to Members of the Public Due to Their Activities Inside the Site Boundary for the Report Period: Not applicable for DNPS. Any member of the public that is onsite for a significant period will be issued a Thermo Luminescent Dosimeter (TLD).
7. Liquid and Gaseous Effluent Radiation Monitors and Instrumentation Unavailability for the Period Beyond the Requirements of the ODCM, Including Sampling Deviation:

No ODCM required monitors were unavailable beyond requirements of the ODCM in 2011.

8. 40CFR 190 / 10CFR72 Compliance The General Electric Hitachi Nuclear Energy Morris Operation (GE-Hitachi Morris Operation) facility is physically located near Dresden Station and, in addition to evolutions performed at Dresden station, is considered in the evaluation of the uranium fuel cycle on members of the public in the general environment for 40CFR190 compliance.

Dresden decommissioning activities (Unit 1) and operations (Units 2 and 3) resulted in a maximum 8.32E-02 mrem organ dose and 8.36E+00 mrem total body dose. Radiological Environmental Monitoring Program (REMP) direct radiation monitoring at or near the site boundary demonstrates that total body dose calculations are conservative.

No effluents were released from the Dresden Independent Spent Fuel Storage Installations (ISFSIs) during 2011. REMP direct radiation monitoring at or near the site boundary demonstrates that the ISFSIs do not result in measurable dose to the public.

Per the 2011 GE-Hitachi Morris Operation IOCFR72.44(d)(3) report, maximum dose at their site boundary from direct radiation exposure was 1.07E+00 mrem and maximum organ dose was 1.35E-02 mrem for 2011.

Maximum total body dose from Dresden and GE-Hitachi Morris Operation activities is 9.43E+00 mrem during 2011, which is 37.7 % of the 40CFR 190 limit of 25 mrem.

Maximum organ dose from Dresden and GE-Hitachi Morris Operation activities is 9.67E-02 mrem during 2011.

This is 0.39 % of the 40CFRI90 limit of 25 mrem to any organ. The thyroid dose is 0.13 % of the 40CFRI90 limit of 75 mrem.

Page 23 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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.S0 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 1 1 9 23 17 13 14 27 1 0 106 NNE 0 3 7 4 28 11 14 2 8 2 3 82 NE 0 2 5 11 52 51 19 12 11 3 2 168 ENE 0 2 3 6 46 51 17 2 1 0 0 128 E 0 1 6 6 32 47 35 9 5 0 0 141 ESE 0 1 7 6 22 16 32 15 2 0 0 101 SE 0 0 1 3 8 11 12 18 13 0 0 66 SSE 0 1 6 13 17 24 10 10 15 0 0 96 S 0 6 7 14 40 45 25 13 24 4 0 178 SSW 1 3 12 17 31 35 25 15 16 3 0 158 SW 0 2 9 6 34 22 21 13 8 1 0 116 WSW 0 1 5 16 27 19 10 7 11 1 0 97 W 0 0 10 14 36 35 28 19 22 10 0 174 WNW 0 2 6 12 34 56 42 23 14 1 0 190 NW 0 4 5 9 47 43 32 43 17 1 0 201 NNW 0 3 7 11 26 30 21 21 12 5 1 137 Tot 1 32 97 157 503 513 356 236 206 32 6 2139 Hours of Calm ... ........ 2 Hours of Variable Direction 1 Hours of Valid Data . ... 2142 Hours of Missing Data . 18 Hours in Period .......... 2160 Page 24 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 3Sft 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 2 6 4 2 0 0 0 0 14 NNE 0 0 0 0 5 0 1 0 0 0 0 6 NE 0 0 0 1 11 11 5 5 0 0 0 33 ENE 0 0 0 2 8 5 3 1 0 0 0 19 E 0 0 0 1 4 6 5 1 1 0 0 18 ESE 0 0 0 0 1 0 5 0 0 0 0 6 SE 0 0 0 0 0 0 1 2 2 0 0 5 SSE 0 0 0 0 0 0 0 0 0 0 0 0 S 0 0 0 0 1 0 1 0 0 0 0 2 SSW 0 0 0 0 0 0 1 0 2 0 0 3 SW 0 0 1 1 2 0 1 1 0 0 0 6 WSW 0 0 0 2 1 1 3 3 2 0 0 12 W 0 0 0 0 1 2 3 0 5 0 0 11 WNW 0 0 0 1 1 3 4 3 4 1 0 17 NW 0 0 0 0 3 5 1 6 3 0 0 18 NNW 0 0 0 0 3 1 0 4 1 0 0 9 Tot 0 0 1 10 47 38 36 26 20 1 0 179 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 179 Hours of Missing Data . 18 Hours in Period .......... 2160 Page 25 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 1 1 2 1 0 0 6 NNE 0 0 0 0 1 0 0 0 0 0 0 1 NE 0 0 0 1 3 1 1 0 0 0 0 6 ENE 0 0 0 0 1 1 1 0 0 0 0 3 E 0 0 0 0 0 0 2 0 0 0 0 2 ESE 0 0 0 0 0 1 1 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 1 0 0 1 S 0 0 0 0 0 0 0 0 1 0 0 1 SSW 0 0 0 0 0 1 0 0 3 0 0 4 SW 0 0 1 0 0 0 0 3 0 1 0 5 WSW 0 0 0 1 0 0 0 0 0 0 0 1 W 0 0 0 0 0 0 2 3 0 2 0 7 WNW 0 0 1 0 2 1 4 2 0 0 0 10 NW 0 0 0 0 1 4 1 1 3 0 0 10 NNW 0 0 0 0 1 0 0 0 0 0 0 1 Tot 0 0 2 2 10 10 13 11 9 3 0 60 Hours of Calm ... ........ 0 Hours of Variable Direction 1 Hours of Valid Data . ... 61 Hours of Missing Data . 18 Hours in Period ... ...... 2160 Page 26 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 2 0 1 0 0 0 0 0 3 NNE 0 0 0 0 2 2 0 0 0 0 0 4 NE 0 0 0 1 1 0 1 1 1 0 0 5 ENE 0 0 0 0 1 1 0 0 0 0 0 2 E 0 0 0 0 0 3 0 0 1 0 0 4 ESE 0 0 0 0 1 1 0 0 0 0 0 2 SE 0 0 0 1 0 0 0 0 0 0 0 1 SSE 0 0 0 0 1 0 0 0 1 0 0 2 S 0 0 0 0 0 1 1 1 2 0 0 5 SSW 0 0 0 0 0 2 0 0 0 1 0 3 SW 0 0 0 0 1 0 2 0 0 0 0 3 WSW 0 0 1 1 1 1 1 0 0 0 0 5 W 0 0 0 0 0 1 1 1 2 1 0 6 WNW 0 0 0 0 0 1 0 1 0 0 0 2 NW 0 0 0 0 1 2 0 3 3 0 0 9 NNW 0 0 1 0 2 0 0 1 0 0 0 4 Tot 0 0 2 5 11 16 6 8 10 2 0 60 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 60 Hours of Missing Data . 18 Hours in Period ... ...... 2160 Page 27 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 5 6 9 12 26 0 0 61 NNE 0 0 2 1 9 3 8 2 8 0 0 33 NE 0 0 1 4 17 27 9 6 10 3 1 78 ENE 0 0 0 2 15 35 13 1 1 0 0 67 E 0 0 1 1 10 21 24 8 3 0 0 68 ESE 0 0 2 2 4 5 12 4 0 0 0 29 SE 0 0 0 0 1 4 5 11 10 0 0 31 SSE 0 0 0 3 9 16 8 6 9 0 0 51 S 0 2 0 6 22 27 12 2 8 1 0 80 SSW 1 0 2 1 11 11 11 11 5 2 0 55 SW 0 0 1 2 10 8 13 7 3 0 0 44 WSW 0 0 1 6 15 8 4 1 6 1 0 42 W 0 0 2 2 12 17 9 3 10 4 0 59 WNW 0 2 3 4 9 23 20 12 8 0 0 81 NW 0 2 2 0 16 18 22 27 8 1 0 96 NNW 0 0 4 4 5 22 18 16 9 5 1 84 Tot 1 6 21 41 170 251 197 129 124 17 2 959 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 959 Hours of Missing Data . 18 Hours in Period ... ...... 2160 Page 28 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 1 1 11 5 1 0 0 1 0 21 NNE 0 2 4 3 6 5 0 0 2 3 36 NE 0 2 4 4 20 12 3 0 0 0 1 46 ENE 0 2 3 2 21 9 0 0 0 0 0 37 E 0 1 5 4 18 17 4 0 0 0 0 49 ESE 0 0 4 4 13 8 14 11 2 0 0 56 SE 0 0 1 1 7 6 6 5 1 0 0 27 SSE 0 1 4 7 7 8 2 4 4 0 0 37 S 0 3 4 4 10 14 11 10 13 3 0 72 SSW 0 3 5 11 11 20 13 4 6 0 0 73 SW 0 1 3 2 8 10 4 2 4 0 0 34 WSW 0 1 2 3 5 6 2 3 3 0 0 25 W 0 0 5 7 21 15 13 12 5 3 0 81 WNW 0 0 1 6 21 28 14 5 2 0 0 77 NW 0 2 1 7 23 14 8 6 0 0 0 61 NNW 0 0 1 6 14 7 3 0 2 0 0 33 Tot 0 19 48 72 221 185 103 62 42 9 4 765 Hours of Calm ... ........ 1 Hours of Variable Direction 0 Hours of Valid Data . ... 766 Hours of Missing Data . 18 Hours in Period ... ...... 2160 Page 29 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 0 1 0 0 0 0 0 0 0 1 NNE 0 1 1 0 0 0 0 0 0 0 0 2 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 1 1 0 3 1 0 0 0 0 0 6 SE 0 0 0 1 0 0 0 0 0 0 2 SSE 0 0 2 3 0 0 0 0 0 0 0 5 S 0 0 2 4 6 3 0 0 0 0 0 15 SSW 0 0 4 5 9 1 0 0 0 0 0 19 SW 0 1 1 1 12 4 1 0 1 0 0 21 WSW 0 0 1 3 4 3 0 0 0 0 0 11 W 0 0 3 5 2 0 0 0 0 0 0 10 WNW 0 0 1 1 1 0 0 0 0 0 0 3 NW 0 0 2 2 3 0 0 0 0 0 0 7 NNW 0 3 1 1 1 0 0 0 0 0 0 6 Tot 0 19 27 41 13 1 0 1 0 0 108 Hours of Calm ... ........ 1 Hours of Variable Direction 0 Hours of Valid Data . . .. 109 Hours of Missing Data . . 18 Hours in Period ......... 2160 Page 30 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 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 1 1 0 1 0 0 0 0 0 0 3 SSW 0 0 1 0 0 0 0 0 0 0 0 1 SW 0 0 2 0 1 0 0 0 0 0 0 3 WSW 0 0 0 0 1 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 0 0 0 0 0 0 0 0 0 0 Tot 0 1 4 0 0 0 0 0 0 0 8 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 8 Hours of Missing Data . 18 Hours in Period ... ...... 2160 Page 31 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 All Stabilities Elevations:: Winds 150ft Stability 1SOft 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 6 11 18 11 11 37 8 3 108 NNE 0 0 0 1 13 18 13 10 6 5 77 NE 0 0 4 8 27 46 45 22 12 6 4 174 ENE 0 0 6 8 21 40 48 25 8 0 0 156 E 0 2 4 0 12 19 26 33 17 s 0 118 ESE 0 1 3 6 6 11 15 23 29 4 0 98 SE 0 0 1 2 4 6 12 12 29 7 0 73 SSE 0 0 0 2 7 26 22 9 15 10 0 91 S 0 2 2 0 22 29 37 22 28 12 6 160 SSW 0 0 0 4 17 30 31 30 31 9 4 156 SW 0 1 1 3 22 21 15 27 27 4 4 125 WSW 0 1 1 5 23 15 21 13 8 7 8 102 W 0 0 7 6 9 30 39 29 38 28 14 200 WNW 0 1 2 5 18 31 38 33 60 7 1 196 NW 0 2 3 2 15 25 40 30 57 12 4 190 NNW 0 0 1 6 17 25 26 19 21 3 3 121 Tot 0 11 37 64 244 390 437 351 427 128 56 2145 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 2145 Hours of Missing Data . 15 Hours in Period ... ...... 2160 Page 32 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 150ft Wind Wind Sp eed 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 4 3 3 1 0 0 0 12 NNE 0 0 0 0 4 4 1 0 0 0 0 9 NE 0 0 0 1 5 12 6 6 4 0 0 34 ENE 0 0 0 2 7 3 2 2 2 0 0 18 E 0 0 0 0 2 2 7 3 1 1 0 16 ESE 0 0 0 0 0 0 1 4 2 0 0 7 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 1 1 1 1 0 0 4 SSW 0 0 0 0 1 0 0 0 1 1 0 3 SW 0 0 0 0 0 2 1 2 1 0 0 6 WSW 0 0 0 0 4 0 2 0 2 0 2 10 W 0 0 1 0 0 1 3 4 3 6 2 20 WNW 0 0 0 0 1 5 1 1 3 0 0 11 NW 0 0 0 0 3 3 0 1 s 3 0 15 NNW 0 0 0 0 3 3 1 0 s 0 0 12 Tot 0 0 4 34 39 29 25 32 11 4 179 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data .. 179 Hours of Missing Data . 15 Hours in Period .......... 2160 Page 33 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 1 1 0 2 0 0 4 NNE 0 0 0 0 2 0 0 0 0 0 0 2 NE 0 0 0 1 1 3 1 0 0 0 0 6 ENE 0 0 0 0 1 0 1 1 0 0 0 3 E 0 0 0 0 0 0 0 2 0 0 0 2 ESE 0 0 0 0 0 0 1 1 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 1 0 0 1 S 0 0 0 0 0 0 0 0 0 1 0 1 SSW 0 0 0 0 0 0 1 0 3 1 1 6 SW 0 0 0 0 0 0 0 1 1 0 0 2 WSW 0 0 0 0 1 0 0 0 0 0 0 1 W 0 0 2 0 1 0 1 1 3 0 2 10 WNW 0 0 0 0 1 1 1 4 2 0 0 9 NW 0 0 0 0 1 3 2 0 2 2 0 10 NNW 0 0 0 0 1 0 0 0 1 0 0 2 Tot 0 0 2 9 8 9 10 15 4 3 61 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 61 Hours of Missing Data . 15 Hours in Period .......... 2160 Page 34 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 15Oft 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 2 1 0 0 0 0 4 NNE 0 0 0 0 0 0 2 0 0 0 0 2 NE 0 0 0 0 3 0 0 1 2 0 0 6 ENE 0 0 0 0 0 3 0 0 0 0 0 3 E 0 0 0 0 0 0 1 0 0 1 0 2 ESE 0 0 0 0 0 2 0 0 0 0 0 2 SE 0 0 0 1 0 0 0 0 0 0 0 1 SSE 0 0 0 0 0 1 0 0 1 0 0 2 S 0 0 0 0 0 2 0 1 3 0 0 6 SSW 0 0 0 0 0 1 0 0 0 0 1 2 SW 0 0 0 0 1 0 1 3 0 0 0 5 WSW 0 0 1 1 1 0 0 0 0 0 0 3 W 0 0 0 0 0 0 1 1 1 2 1 6 WNW 0 0 0 0 0 0 1 0 2 0 0 3 NW 0 0 0 0 0 2 1 0 4 2 0 9 NNW 0 0 0 2 0 2 0 0 0 0 0 4 Tot 0 0 1 5 5 15 8 6 13 5 2 60 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 60 Hours of Missing Data . 15 Hours in Period .......... 2160 Page 35 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 3 2 3 1 9 35 8 0 62 NNE 0 0 0 1 4 8 3 7 6 6 1 36 NE 0 0 1 2 6 14 28 12 6 6 4 79 ENE 0 0 0 0 8 15 29 18 5 0 0 75 E 0 0 1 0 4 5 7 20 15 3 0 55 ESE 0 1 1 3 2 3 5 7 7 1 0 30 SE 0 0 0 0 1 1 4 7 15 7 0 35 SSE 0 0 0 1 5 18 15 7 s 3 0 54 S 0 1 0 0 17 15 20 8 8 4 1 74 SSW 0 0 0 2 7 12 8 12 12 3 1 57 SW 0 1 0 2 6 6 6 5 10 0 1 37 WSW 0 0 0 2 12 9 8 8 0 4 5 48 W 0 0 2 5 2 12 15 6 12 10 4 68 WNW 0 1 0 4 6 10 19 9 31 7 1 88 NW 0 1 2 2 5 7 16 18 38 5 4 98 NNW 0 0 1 3 7 9 13 14 15 1 3 66 Tot 0 5 9 30 94 147 197 167 220 68 25 962 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 962 Hours of Missing Data . 15 Hours in Period ... ...... 2160 Page 36 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 150ft Stabi: lity 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 4 8 5 1 0 0 3 23 NNE 0 0 0 0 3 6 5 6 4 0 4 28 NE 0 0 2 4 12 17 10 3 0 0 0 48 ENE 0 0 4 5 5 19 16 4 1 0 0 54 E 0 1 1 0 6 12 11 8 1 0 0 40 ESE 0 0 2 2 4 6 5 10 20 3 0 52 SE 0 0 1 1 3 5 8 4 12 0 0 34 SSE 0 0 0 1 2 7 7 2 8 7 0 34 S 0 1 1 0 4 6 14 10 15 7 5 63 SSW 0 0 0 2 8 12 13 16 14 4 1 70 SW 0 0 1 1 10 9 3 6 10 4 2 46 WSW 0 1 0 2 2 0 7 3 4 3 1 23 W 0 0 2 0 4 13 17 17 19 10 5 87 WNW 0 0 1 1 5 13 16 19 22 0 0 77 NW 0 1 0 0 6 9 18 11 8 0 0 53 NNW 0 0 0 1 5 10 11 5 0 2 0 34 Tot 0 5 16 20 83 152 166 125 138 40 21 766 Hours of Calm ... ....... 0 Hours of Variable Direction 0 Hours of Valid Data . ... 766 Hours of Missing Data . 15 Hours in Period ... ...... 2160 Page 37 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 150ft Stability 15oft 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 0 0 0 0 0 3 NNE 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 1 0 0 0 0 0 0 0 0 1 ENE 0 0 2 1 0 0 0 0 0 0 0 3 E 0 1 2 0 0 0 0 0 0 0 0 3 ESE 0 0 0 1 0 0 3 1 0 0 0 5 SE 0 0 0 0 0 0 0 0 0 0 1 SSE 0 0 0 0 0 0 0 0 0 0 0 0 S 0 0 1 0 1 5 2 2 1 0 0 12 SSW 0 0 0 0 1 5 9 2 1 0 0 18 SW 0 0 0 0 4 3 4 9 5 0 1 26 WSW 0 0 0 0 1 4 3 2 2 0 0 12 W 0 0 0 1 2 4 2 0 0 0 0 9 WNW 0 0 1 0 5 2 0 0 0 0 0 8 NW 0 0 1 0 0 1 3 0 0 0 0 5 NNW 0 0 0 0 1 1 1 0 0 0 0 3 Tot 0 1 8 4 16 26 27 17 9 0 1 109 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 109 Hours of Missing Data . 15 Hours in Period .......... 2160 Page 38 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 Stability Class G Extremely Stable based on Lapse Rate Elevations:: Winds 150ft Stabil ity 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 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 1 1 0 1 0 0 0 3 WSW 0 0 0 0 2 2 1 0 0 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 0 0 3 3 1 1 0 0 0 8 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 8 Hours of Missing Data . 15 Hours in Period .......... 2160 Page 39 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 2 2 4 4 11 8 21 30 27 1 110 NNE 0 0 1 3 6 12 8 9 9 12 5 65 NE 0 0 1 5 18 31 30 25 26 8 11 155 ENE 0 1 2 8 26 34 66 32 13 1 2 185 E 0 0 0 5 13 16 21 31 40 10 3 139 ESE 0 0 4 2 3 7 7 15 20 15 0 73 SE 0 1 0 1 3 5 5 17 31 22 4 89 SSE 0 0 1 0 5 4 13 11 20 16 2 72 S 0 1 0 0 5 24 29 27 20 23 21 150 SSW 0 1 0 2 15 9 24 25 36 25 10 147 SW 0 0 0 1 9 21 17 25 49 17 6 145 WSW 0 1 3 5 14 15 15 16 10 11 13 103 W 0 0 1 3 10 13 16 27 37 25 23 155 WNW 0 2 2 5 11 12 16 33 57 37 12 187 NW 0 1 2 2 7 21 34 35 82 40 0 224 NNW 0 1 1 4 17 10 21 27 39 12 11 143 Tot 0 11 20 50 166 245 330 376 519 301 124 2142 Hours of Calm ...... ....... 0 Hours of Variable Direction 0 Hours of Valid Data . . .. 2142 Hours of Missing Data . . 18 Hours in Period ...... .. 2160 Page 40 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 1 1 1 0 0 0 0 0 3 NNE 0 0 0 0 1 2 2 0 0 0 0 5 NE 0 0 0 0 4 4 4 2 1 0 0 15 ENE 0 0 0 0 4 5 2 1 3 0 0 15 E 0 0 0 1 4 1 5 3 1 1 0 16 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 1 1 0 0 2 SSE 0 0 0 0 0 0 0 0 0 0 0 0 S 0 0 0 0 0 1 0 1 0 0 0 2 SSW 0 0 0 0 0 0 0 1 1 1 0 3 SW 0 0 0 0 0 0 0 0 1 0 0 1 WSW 0 0 0 0 0 1 1 0 2 0 0 4 W 0 0 0 0 0 1 0 0 0 2 0 3 WNW 0 0 0 0 0 1 0 0 1 2 1 5 NW 0 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 1 0 0 0 2 0 0 3 Tot 0 0 0 2 15 17 14 9 13 6 1 77 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 77 Hours of Missing Data . 18 Hours in Period .......... 2160 Page 41 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 2 1 0 0 0 0 0 3 NNE 0 0 0 0 1 0 0 0 0 0 2 NE 0 0 0 1 3 2 1 0 1 0 0 8 ENE 0 0 0 0 1 2 2 1 0 0 0 6 E 0 0 0 0 1 1 0 1 1 0 0 4 ESE 0 0 0 0 0 0 0 1 0 0 0 1 SE 0 0 0 0 0 0 0 1 2 1 0 4 SSE 0 0 0 0 0 0 0 0 1 0 0 1 S 0 0 0 0 0 0 0 0 2 0 0 2 SSW 0 0 0 0 0 0 0 0 0 1 1 2 SW 0 0 0 0 0 1 0 1 0 0 0 2 WSW 0 0 0 0 2 0 1 0 2 0 2 7 W 0 0 0 0 0 0 1 1 0 2 0 4 WNW 0 0 0 0 1 0 0 1 3 1 2 8 NW 0 0 0 0 1 0 3 1 6 1 0 12 NNW 0 0 0 0 2 0 0 0 0 1 0 3 Tot 0 0 0 2 13 8 8 8 18 7 5 69 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 69 Hours of Missing Data . 18 Hours in Period .......... 2160 Page 42 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 1 0 1 1 2 2 0 0 7 NNE 0 0 0 0 2 2 0 1 1 0 0 6 NE 0 0 0 0 3 4 1 1 2 0 0 11 ENE 0 0 0 1 2 2 2 2 1 0 0 10 E 0 0 0 0 0 0 0 2 1 1 1 5 ESE 0 0 0 0 0 0 1 2 1 0 0 4 SE 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 0 0 0 0 2 0 2 S 0 0 0 0 0 2 0 1 0 1 0 4 SSW 0 0 0 0 0 1 1 3 1 3 0 9 SW 0 0 0 0 1 0 3 3 2 0 1 10 WSW 0 0 1 0 1 1 1 2 0 0 0 6 W 0 0 0 0 0 0 1 2 1 0 4 8 WNW 0 0 1 0 1 2 2 2 4 1 0 13 NW 0 0 0 0 2 3 1 1 2 5 0 14 NNW 0 0 0 0 1 0 1 0 2 0 1 5 Tot 0 0 2 2 13 18 15 24 20 13 7 114 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 114 Hours of Missing Data . 18 Hours in Period ... ...... 2160 Page 43 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 2 2 1 5 4 11 23 25 1 74 NNE 0 0 0 1 2 7 3 5 3 12 5 38 NE 0 0 1 4 3 16 20 17 16 8 11 96 ENE 0 0 1 1 11 20 56 26 9 1 2 127 E 0 0 0 1 2 11 12 22 35 8 2 93 ESE 0 0 2 2 1 4 3 7 10 12 0 41 SE 0 1 0 1 1 2 1 9 14 13 4 46 SSE 0 0 0 0 1 3 13 9 14 13 2 55 S 0 1 0 0 5 16 28 22 8 9 8 97 SSW 0 0 0 0 13 7 12 11 11 6 3 63 SW 0 0 0 1 8 13 8 8 12 3 2 55 WSW 0 1 1 5 8 8 7 7 3 1 6 47 W 0 0 1 3 6 7 11 11 18 16 11 84 WNW 0 2 0 5 6 6 11 22 24 20 8 104 NW 0 0 2 1 4 12 18 20 44 29 0 130 NNW 0 1 1 3 10 7 16 18 25 11 10 102 Tot 0 6 11 30 82 144 223 225 269 187 75 1252 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 1252 Hours of Missing Data . 18 Hours in Period .......... 2160 Page 44 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 0 0 0 3 3 7 2 0 0 16 NNE 0 0 0 1 1 0 2 2 5 0 0 11 NE 0 0 0 0 5 5 4 5 6 0 0 25 ENE 0 1 1 5 6 5 4 2 0 0 0 24 E 0 0 0 3 6 3 4 3 2 0 0 21 ESE 0 0 2 0 2 3 3 5 9 3 0 27 SE 0 0 0 0 2 3 3 5 13 8 0 34 SSE 0 0 1 0 4 1 0 2 5 0 0 13 S 0 0 0 0 0 4 1 2 10 13 13 43 SSW 0 1 0 2 2 1 10 21 13 6 67 SW 0 0 0 0 0 6 5 10 22 12 3 58 WSW 0 0 0 0 2 4 4 6 1 7 5 29 W 0 0 0 0 4 3 1 10 14 5 8 45 WNW 0 0 0 0 2 2 3 8 21 13 1 50 NW 0 1 0 0 0 6 12 13 28 5 0 65 NNW 0 0 0 1 2 3 4 9 5 0 0 24 Tot 0 4 4 12 38 52 64 99 164 79 36 552 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 552 Hours of Missing Data . 18 Hours in Period .......... 2160 Page 45 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 1 0 0 0 0 0 1 3 2 0 7 NNE 0 0 1 0 0 0 1 1 0 0 0 3 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 1 2 0 0 0 0 0 0 3 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 1 1 1 0 0 3 SSE 0 0 0 0 0 0 0 0 0 1 0 1 S 0 0 0 0 0 1 0 1 0 0 0 2 SSW 0 0 0 0 0 0 0 0 2 1 0 3 SW 0 0 0 0 0 1 1 3 11 2 0 18 WSW 0 0 1 0 1 1 1 1 2 3 0 10 W 0 0 0 0 0 2 2 3 4 0 0 11 WNW 0 0 1 0 1 1 0 0 4 0 0 7 NW 0 0 0 1 0 0 0 0 2 0 0 3 NNW 0 0 0 0 1 0 0 0 5 0 0 6 Tot 0 1 3 2 5 6 6 11 34 9 0 77 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 77 Hours of Missing Data . 18 Hours in Period ... ...... 2160 Page 46 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan - Mar for years 2011 - 2011 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 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 1 0 0 1 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 1 0 0 1 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 1 Hours of Missing Data . 18 Hours in Period .......... 2160 Page 47 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 8 13 14 14 11 5 8 0 0 80 NNE 0 2 4 11 25 22 31 29 36 12 1 173 NE 0 5 5 19 42 58 43 24 15 0 0 211 ENE 0 s 4 14 52 42 17 5 2 0 0 141 E 0 4 8 11 42 38 30 14 11 3 0 161 ESE 0 4 11 8 26 22 31 15 15 2 0 134 SE 0 7 7 5 18 30 32 32 14 5 2 152 SSE 0 7 9 9 37 24 16 12 13 2 3 132 S 0 2 11 4 34 34 25 19 31 6 4 170 SSW 0 4 6 19 22 21 21 19 19 13 7 151 SW 0 0 6 15 18 12 21 11 12 S 1 101 WSW 0 2 8 13 22 17 18 20 6 0 0 106 W 0 2 13 16 30 32 35 36 28 1 0 193 WNW 0 4 5 11 13 27 24 20 22 2 0 128 NW 0 2 6 6 9 14 18 15 6 1 0 77 NNW 0 1 7 17 16 6 3 3 0 0 0 53 Tot 0 58 118 191 420 413 376 279 238 52 18 2163 Hours of Calm ... ........ 1 Hours of Variable Direction 0 Hours of Valid Data . ... 2164 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 48 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 4 4 1 1 0 1 0 0 0 11 NNE 0 0 1 4 2 1 9 5 2 0 0 24 NE 0 0 0 2 5 13 14 12 8 0 0 54 ENE 0 0 1 0 3 7 1 0 0 0 0 12 E 0 0 0 1 2 11 7 0 0 0 0 21 ESE 0 0 0 0 5 4 2 1 1 0 0 13 SE 0 0 0 1 3 2 6 0 0 1 1 14 SSE 0 0 3 0 3 4 0 1 0 0 0 11 S 0 0 0 0 4 4 3 1 1 0 0 13 SSW 0 0 0 1 0 6 4 0 1 2 0 14 SW 0 0 0 2 0 2 0 0 0 0 0 4 WSW 0 0 1 1 2 3 0 4 3 0 0 14 W 0 0 0 1 3 3 5 6 10 0 0 28 WNW 0 0 0 2 0 2 5 7 6 0 0 22 NW 0 0 0 1 1 2 3 3 2 1 0 13 NNW 0 0 1 1 0 1 0 0 0 0 4 Tot 0 0 11 21 35 65 60 41 34 4 272 Hours of Calm ........ 0 Hours of Variable Direc tion 0 Hours of Valid Data . . 272 Hours of Missing Data 20 Hours in Period . ... 2184 Page 49 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 1 2 0 1 1 0 0 0 0 5 NNE 0 0 0 0 0 1 0 0 1 1 0 3 NE 0 0 0 0 1 2 2 1 0 0 0 6 ENE 0 0 0 0 2 1 0 0 0 0 0 3 E 0 0 0 1 3 1 1 0 0 0 0 6 ESE 0 0 0 0 1 1 0 0 1 0 0 3 SE 0 0 0 0 0 0 1 1 1 0 1 4 SSE 0 0 0 0 2 1 0 1 0 0 1 5 S 0 0 0 0 1 2 2 0 0 1 0 6 SSW 0 0 0 0 1 1 0 0 0 1 0 3 SW 0 0 0 1 0 0 2 0 1 0 0 4 WSW 0 0 0 1 0 3 2 2 2 0 0 10 W 0 0 0 0 2 0 3 2 0 0 0 7 WNW 0 0 0 0 1 2 3 4 0 0 0 10 NW 0 0 0 0 0 0 1 0 0 0 0 1 NNW 0 0 0 1 2 1 1 0 0 0 0 5 Tot 0 0 1 6 16 17 19 11 6 3 2 81 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 81 Hours of Missing Data . 20 Hours in Period .......... 2184 Page 50 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 2 1 0 0 0 0 3 NNE 0 0 1 0 0 2 2 1 0 0 0 6 NE 0 0 0 0 0 2 1 1 1 0 0 5 ENE 0 0 1 0 2 0 2 0 0 0 0 5 E 0 0 1 0 1 5 2 0 0 0 0 9 ESE 0 0 0 0 0 0 0 0 2 0 0 2 SE 0 1 0 1 1 2 3 4 0 0 0 12 SSE 0 0 0 0 1 0 1 1 1 0 0 4 S 0 0 2 0 2 2 3 1 2 0 0 12 SSW 0 0 1 0 0 1 1 3 1 0 1 8 SW 0 0 0 0 0 0 1 1 0 1 1 4 WSW 0 0 0 1 1 0 1 2 0 0 0 5 W 0 0 0 0 0 3 2 2 4 0 0 11 WNW 0 0 0 0 1 0 1 0 0 0 0 2 NW 0 1 0 2 0 0 0 0 0 0 0 3 NNW 0 0 0 0 4 0 0 0 0 0 0 4 Tot 0 2 6 4 13 19 21 16 11 2 95 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 95 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 51 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 1 0 0 3 2 3 4 6 0 0 19 NNE 0 2 0 3 6 7 9 15 28 7 1 78 NE 0 0 0 5 17 22 18 6 6 0 0 74 ENE 0 1 0 1 13 21 9 2 1 0 0 48 E 0 0 1 2 7 7 7 2 6 3 0 35 ESE 0 0 1 0 3 3 7 3 6 2 0 25 SE 0 0 0 1 1 5 7 8 7 4 0 33 SSE 0 0 1 1 8 5 10 5 5 1 2 38 S 0 0 2 1 6 10 5 5 9 3 1 42 SSW 0 0 0 3 3 1 7 8 12 5 2 41 SW 0 0 0 1 2 2 7 3 7 3 0 25 WSW 0 0 2 2 5 8 12 6 1 0 0 36 W 0 0 3 1 6 12 11 21 13 1 0 68 WNW 0 0 0 0 4 11 9 7 16 2 0 49 NW 0 0 0 1 1 4 7 10 3 0 0 26 NNW 0 0 0 3 4 2 1 3 0 0 0 13 Tot 0 4 10 25 89 122 129 108 126 31 6 650 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 650 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 52 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 2 0 5 9 8 6 0 2 0 0 32 NNE 0 0 1 4 13 11 11 8 5 4 0 57 NE 0 1 4 10 19 19 8 4 0 0 0 65 ENE 0 1 2 13 31 13 5 3 1 0 0 69 E 0 1 4 7 29 13 13 12 5 0 0 84 ESE 0 2 4 6 12 14 22 11 5 0 0 76 SE 0 2 4 1 12 17 15 19 6 0 0 76 SSE 0 2 3 8 18 13 5 4 7 1 0 61 S 0 1 2 1 17 15 12 12 19 2 3 84 SSW 0 1 4 4 11 8 7 8 5 5 4 57 SW 0 0 2 5 5 8 11 6 4 1 0 42 WSW 0 0 3 4 7 0 3 6 0 0 0 23 W 0 1 5 8 17 14 14 5 1 0 0 65 WNW 0 0 3 6 6 12 6 2 0 0 0 35 NW 0 1 3 1 7 8 7 2 1 0 0 30 NNW 0 1 3 6 5 3 0 0 0 0 0 18 Tot 0 16 47 89 218 176 145 102 61 13 7 874 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 874 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 53 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 35ft Stability 15Oft 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 2 1 1 0 0 0 0 0 0 7 NNE 0 0 1 0 3 0 0 0 0 0 0 4 NE 0 4 0 2 0 0 0 0 0 0 0 6 ENE 0 2 0 0 1 0 0 0 0 0 0 3 E 0 1 2 0 0 1 0 0 0 0 0 4 ESE 0 0 1 2 3 0 0 0 0 0 0 6 SE 0 3 1 0 1 4 0 0 0 0 0 9 SSE 0 5 2 0 5 1 0 0 0 0 0 13 S 0 0 4 2 4 1 0 0 0 0 0 11 SSW 0 3 1 9 6 4 2 0 0 0 0 25 SW 0 0 2 6 9 0 0 1 0 0 0 18 WSW 0 1 2 3 6 3 0 0 0 0 0 15 W 0 1 4 4 2 0 0 0 0 0 0 11 WNW 0 3 1 3 1 0 0 0 0 0 0 8 NW 0 0 2 1 0 0 0 0 0 0 0 3 NNW 0 0 2 4 0 0 0 0 0 0 0 6 Tot 0 26 27 37 42 14 2 1 0 0 0 149 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 149 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 54 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 1 1 1 0 0 0 0 0 0 0 3 0 0 0 0 1 0 0 0 0 0 0 1 NNE NE 0 0 1 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 1 ENE E 0 2 0 0 0 0 0 0 0 0 0 2 ESE 0 2 5 0 2 0 0 0 0 0 0 9 SE 0 1 2 1 0 0 0 0 0 0 0 4 SSE 0 0 0 0 0 0 0 0 0 0 0 0 S 0 1 1 0 0 0 0 0 0 0 0 2 SSW 0 0 0 2 1 0 0 0 0 0 0 3 SW 0 0 2 0 2 0 0 0 0 0 0 4 WSW 0 1 0 1 1 0 0 0 0 0 0 3 W 0 0 1 2 0 0 0 0 0 0 0 3 WNW 0 1 1 0 0 0 0 0 0 0 0 2 NW 0 0 1 0 0 0 0 0 0 0 0 1 NNW 0 0 1 2 0 0 0 0 0 0 0 3 Tot 0 10 16 9 7 0 0 0 0 0 0 42 Hours of Calm ...... ....... 1 Hours of Variable Direction 0 Hours of Valid Data . . .. 43 Hours of Missing Data . . 20 Hours in Period ...... .. 2184 Page 55 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 1 1 7 11 14 13 22 22 8 2 101 NNE 0 1 2 7 16 20 26 24 45 23 12 176 NE 0 0 0 5 32 32 48 33 29 8 0 187 ENE 0 1 4 7 29 33 41 19 13 4 1 152 E 0 1 4 6 23 27 34 27 29 9 6 166 ESE 0 0 2 2 12 13 9 26 41 19 5 129 SE 0 0 2 2 15 16 26 31 41 12 8 153 SSE 0 1 0 6 16 28 26 21 17 12 6 133 S 0 0 5 2 19 17 29 30 29 28 14 173 SSW 0 2 2 5 3 14 27 15 32 16 15 131 SW 0 0 0 4 6 11 15 20 22 8 11 97 WSW 0 2 2 4 11 13 21 26 36 11 1 127 W 0 2 6 9 15 25 34 29 66 24 4 214 WNW 0 1 1 2 9 11 15 23 32 10 5 109 NW 0 0 3 3 12 10 5 15 18 4 0 70 NNW 0 1 5 8 14 9 4 1 2 0 1 45 Tot 0 13 39 79 243 293 373 362 474 196 91 2163 Hours of Calm ... ........ 0 Hours of Variable Direction 1 Hours of Valid Data . ... 2164 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 56 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr Jun for years 2011 - 2011 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 3 3 1 0 5 1 0 0 13 NNE 0 0 1 2 3 3 4 7 6 4 0 30 NE 0 0 0 1 4 5 10 10 11 3 0 44 ENE 0 0 1 1 1 6 3 2 0 0 0 14 E 0 0 0 1 2 7 8 5 0 0 0 23 ESE 0 0 0 0 3 1 3 6 1 1 0 15 SE 0 0 0 0 3 1 1 2 0 0 2 9 SSE 0 0 0 2 1 8 3 0 0 0 0 14 S 0 0 0 0 1 0 7 4 1 1 0 14 SSW 0 0 0 1 0 1 2 1 0 1 2 8 SW 0 0 0 2 1 0 1 0 0 0 0 4 WSW 0 0 0 0 2 0 1 2 4 5 0 14 W 0 0 1 2 2 1 4 2 16 6 0 34 WNW 0 0 0 0 3 1 1 5 5 5 1 21 NW 0 0 1 0 1 0 1 3 3 1 0 10 NNW 0 0 2 1 2 0 0 0 0 0 0 5 Tot 0 0 6 16 32 35 49 54 48 27 5 272 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 272 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 57 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 15oft 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 2 0 1 1 0 0 0 1 5 NNE 0 0 0 0 0 0 2 1 2 0 0 5 NE 0 0 0 0 1 1 0 0 0 0 3 ENE 0 0 0 0 2 0 1 0 0 0 0 3 E 0 0 0 1 2 1 1 0 0 0 6 ESE 0 0 0 0 1 0 0 2 1 0 1 0 3 SE 0 0 0 0 1 0 1 3 0 2 8 SSE 0 0 0 0 0 1 0 01 0 1 0 2 S 0 0 0 0 1 1 1 21 0 0 1 6 SSW 0 0 0 0 0 2 0 0 0 0 0 2 SW 0 0 0 0 1 0 0 3 0 0 1 5 WSW 0 0 0 0 1 2 1 2 5 2 0 13 W 0 0 0 1 0 0 1 0 5 0 0 7 WNW 0 0 0 0 1 0 1 1 3 0 0 6 NW 0 0 0 1 0 0 0 1 1 0 0 3 NNW 0 0 0 1 0 2 1 0 0 0 0 4 Tot 0 0 0 6 11 11 11 14 19 4 5 81 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 81 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 58 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 150ft Stabiliity 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 0 2 2 0 0 0 5 NNE 0 0 1 1 0 3 1 1 0 0 8 NE 0 0 0 0 0 0 0 1 2 0 0 3 ENE 0 0 1 0 2 1 2 1 0 0 9 E 0 0 1 0 0 0 0 2 0 0 0 4 2

ESE 0 0 0 0 0 0 0 1 2 0 4 2

SE 0 0 0 0 1 1 2 4 0 0 10 SSE 0 1 1 12 0 0 0 0 0 2 0 6 0 2 S 0 3 0 1 1 3 2 1 1 0 11 SSW 0 0 0 0 0 0 1 0 3 1 2 7 SW 0 0 0 0 0 0 0 0 2 0 1 3 WSW 0 1 0 1 1 0 0 3 1 0 9 W 0 0 0 0 0 1 2 00 2 3 0 8 WNW 0 1 0 0 1 0 0 0 1 0 0 3 NW 0 0 0 1 3 0 0 0 0 0 4 NNW 0 0 0 0 1 0 0 0 0 0 1 Tot 0 2 5 4 11 8 15 16 21 10 3 95 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 95 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 59 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 Stability Class D Neutral based on Lapse Rate Elevations:: Winds 150ft Stability 1SOft 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 2 1 2 4 9 8 0 27 NNE 0 1 0 1 6 3 8 5 25 17 8 74 NE 0 0 0 2 7 13 20 14 10 5 0 71 ENE 0 0 0 0 2 11 18 7 5 2 1 46 E 0 0 3 0 4 4 5 5 7 3 4 35 ESE 0 0 0 0 0 5 0 3 9 9 4 30 SE 0 0 1 0 3 5 8 8 6 3 35 SSE 0 1 0 0 5 4 5 9 8 3 2 37 S 0 0 2 0 5 3 7 7 9 8 5 46 SSW 0 0 0 2 2 1 1 3 12 7 5 33 SW 0 0 0 0 0 2 3 4 6 3 6 24 WSW 0 0 1 2 3 3 6 13 13 3 1 45 W 0 0 1 2 1 s 11 11 29 14 4 78 WNW 0 0 0 0 1 1 7 6 13 4 4 36 NW 0 0 0 1 0 1 2 2 10 2 0 18 NNW 0 0 0 2 7 1 2 1 2 0 0 15 Tot 0 2 9 12 48 59 102 102 175 94 47 650 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data .... 650 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 60 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 0 4 8 8 11 12 0 1 44 NNE 0 0 0 3 3 8 9 10 11 2 4 50 NE 0 0 0 1 18 13 17 7 6 0 0 62 ENE 0 1 5 20 15 17 8 7 2 0 76 E 0 11 0 4 13 15 17 14 21 6 2 93 ESE 0 0 1 2 4 7 5 14 30 6 1 70 SE 0 0 0 0 2 9 12 15 26 6 1 71 SSE 0 0 0 1 9 11 16 7 9 6 4 63 S 0 0 0 2 5 9 8 15 18 18 8 83 SSW 0 0 2 1 8 14 5 13 7 6 57 SW 0 0 0 1 2 6 2 9 13 4 3 40 WSW 0 0 0 1 2 4 6 2 10 0 0 25 W 0 0 2 2 6 13 11 15 14 1 0 64 WNW 0 0 0 2 1 7 4 11 10 1 0 36 NW 0 0 2 0 5 7 2 9 4 1 0 30 NNW 0 0 2 0 2 3 1 0 0 0 1 9 Tot 0 3 8 26 97 143 149 152 204 60 31 873 Hours of Calm ... ........ 0 Hours of Variable Direction 1 Hours of Valid Data . ... 874 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 61 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 15Oft 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 2 3 0 0 0 0 0 6 NNE 0 0 0 0 3 2 2 0 0 0 0 7 NE 0 0 0 0 2 0 0 0 0 0 0 2 ENE 0 0 1 0 2 0 0 0 0 0 0 3 E 0 0 0 1 0 1 0 1 0 0 4 1

1 ESE 0 0 0 1 0 1 1 0 0 0 4 SE 0 0 0 1 4 1 3 2 0 0 0 11 SSE 0 0 0 3 0 2 1 3 0 0 0 9 S 0 0 0 0 6 3 3 1 0 0 0 13 SSW 0 1 1 0 0 2 9 5 4 0 0 22 SW 0 0 0 1 2 2 8 3 0 1 0 17 WSW 0 1 1 0 1 4 7 4 1 0 0 19 W 0 0 2 2 6 4 3 1 0 0 0 18 WNW 0 0 1 0 2 2 2 0 0 0 0 7 NW 0 0 0 0 2 0 0 0 0 0 0 2 NNW 0 1 1 2 1 0 0 0 0 0 0 5 Tot 0 9 10 35 25 40 20 6 1 0 149 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 149 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 62 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 0 0 1 1 0 0 0 0 0 2 NE 0 0 0 1 0 0 1 0 0 0 0 2 ENE 0 0 0 1 0 0 0 0 0 0 0 1 E 0 0 0 0 1 0 0 0 0 0 0 1 ESE 0 0 0 0 3 0 0 0 0 0 0 3 SE 0 0 1 1 1 3 2 1 0 0 0 9 SSE 0 0 0 0 0 1 1 0 0 0 0 2 S 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 1 0 0 0 0 1 0 0 0 2 SW 0 0 0 0 0 1 1 1 1 0 0 4 WSW 0 0 0 0 1 0 0 1 0 0 0 2 W 0 2 0 0 0 1 2 0 0 0 0 5 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 1 2 0 0 0 0 0 3 NNW 0 0 0 2 1 3 0 0 0 0 0 6 Tot 0 3 2 5 9 12 7 1 0 0 43 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 43 Hours of Missing Data . 20 Hours in Period ... ...... 2184 Page 63 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 0 7 7 8 7 11 11 S 1 57 NNE 0 2 3 4 12 9 16 26 45 47 23 187 NE 0 0 2 3 7 30 33 44 42 18 11 190 ENE 0 0 2 7 25 36 40 32 20 6 2 170 E 0 0 3 6 16 20 22 20 29 17 19 152 ESE 0 1 1 2 10 10 13 12 36 26 16 127 SE 0 0 0 1 11 9 13 17 53 20 16 140 SSE 0 0 4 2 9 13 18 30 34 12 9 131 S 0 1 2 1 10 19 18 25 44 25 31 176 SSW 0 0 1 2 8 7 16 19 38 36 35 162 SW 0 0 1 2 6 4 8 13 45 13 20 112 WSW 0 0 0 4 8 4 15 14 34 21 3 103 W 0 0 2 4 8 11 11 18 65 43 8 170 WNW 0 0 0 2 10 9 20 24 52 28 12 157 NW 0 2 1 2 7 6 13 11 31 17 3 93 NNW 0 1 0 7 12 10 6 7 12 1 1 57 Tot 0 7 22 56 166 205 269 323 591 335 210 2184 Hours of Calm ........ 0 Hours of Variable Direc tion 0 Hours of Valid Data . . 2184 Hours of Missing Data 0 Hours in Period . ... 2184 Page 64 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 3 3 0 1 5 5 0 0 17 NE 0 0 0 0 3 1 6 8 9 5 3 35 ENE 0 0 0 0 1 5 5 1 0 0 0 12 E 0 0 0 0 1 2 6 6 1 0 0 16 ESE 0 0 0 1 3 2 4 1 0 0 0 11 SE 0 0 0 0 1 0 1 2 2 0 2 8 SSE 0 0 0 0 2 3 3 0 2 0 1 S 0 0 0 0 2 2 2 1 1 0 2 10 SSW 0 0 0 0 0 0 3 3 0 0 2 8 SW 0 0 0 2 0 0 1 0 0 0 0 3 WSW 0 0 0 1 3 0 0 0 1 2 0 7 W 0 0 0 1 0 0 0 3 6 4 0 14 WNW 0 0 0 1 2 1 0 0 5 3 1 13 NW 0 0 1 0 0 0 0 2 5 3 1 12 NNW 0 0 0 1 0 0 0 0 0 0 0 1 Tot 0 0 1 10 21 16 32 32 37 17 12 178 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 178 Hours of Missing Data . 0 Hours in Period ... ...... 2184 Page 65 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 5 1 1 0 0 0 0 0 7 NNE 0 0 0 1 0 1 0 2 3 0 0 7 NE 0 0 0 2 0 1 2 3 3 3 0 14 ENE 0 0 2 0 1 2 1 1 0 0 0 7 E 0 0 0 0 1 1 1 0 3 0 0 6 ESE 0 0 0 0 1 0 0 2 0 1 1 5 SE 0 0 0 0 1 1 1 1 1 0 1 6 SSE 0 0 0 1 1 1 1 3 3 1 0 11 S 0 0 0 0 0 1 0 2 0 1 0 4 SSW 0 0 0 0 0 1 3 2 0 2 3 11 SW 0 0 0 0 1 0 0 2 0 0 0 3 WSW 0 0 0 0 0 0 1 3 3 2 0 9 W 0 0 0 1 1 0 1 1 5 2 1 12 WNW 0 0 0 0 1 2 1 2 4 2 0 12 NW 0 0 0 0 2 0 0 1 1 0 0 4 NNW 0 0 0 0- 1 0 0 1 0 0 0 2 Tot 0 0 2 10 12 12 12 26 26 14 6 120 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . . .. 120 Hours of Missing Data . . 0 Hours in Period ......... 2184 Page 66 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 1 0 0 0 0 2 NNE 0 0 1 0 0 0 1 1 1 0 1 5 NE 0 0 0 0 1 0 2 2 5 2 0 12 ENE 0 0 0 0 3 1 1 0 0 0 6 E 0 0 1 1 1 2 3 2 0 0 11 ESE 0 0 0 0 0 0 0 0 0 2 3 SE 0 0 0 0 1 1 1 4 1 1 10 SSE 0 0 0 1 0 3 0 4 1 0 10 S 0 0 0 0 2 0 2 2 3 0 2 11 SSW 0 0 0 1 1 0 2 1 5 3 4 17 SW 0 0 0 0 0 1 0 0 2 0 2 5 WSW 0 0 0 0 0 0 2 1 3 3 0 9 W 0 0 1 0 0 2 1 1 6 5 1 17 WNW 0 0 0 0 1 0 2 7 0 0 11 NW 0 0 0 1 1 0 0 0 1 0 0 3 NNW 0 0 0 1 2 2 1 0 2 0 0 8 Tot 0 0 3 5 13 13 19 14 45 15 13 140 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 140 Hours of Missing Data . 0 Hours in Period ... ...... 2184 Page 67 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 0 1 4 2 2 2 5 4 0 20 NNE 0 0 2 0 7 6 9 10 17 39 22 112 NE 0 0 1 0 3 22 17 24 21 8 8 104 ENE 0 0 0 4 11 20 27 28 16 6 2 114 E 0 0 1 2 3 5 7 11 8 14 18 69 ESE 0 1 1 0 2 2 4 4 17 9 11 51 SE 0 0 0 1 2 2 3 5 19 11 12 55 SSE 0 0 3 0 4 1 4 10 14 4 6 46 S 0 1 2 0 2 7 6 9 13 9 14 63 SSW 0 0 0 1 4 3 2 2 10 14 17 53 SW 0 0 0 0 0 1 3 2 19 11 14 50 WSW 0 0 0 2 3 2 4 5 16 10 2 44 W 0 0 0 2 3 5 2 4 26 25 6 73 WNW 0 0 0 0 2 1 8 13 15 19 11 69 NW 0 2 0 0 1 2 5 2 17 12 2 43 NNW 0 0 0 3 4 2 4 3 7 1 0 24 Tot 0 4 10 16 55 83 107 134 240 196 145 990 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 990 Hours of Missing Data . 0 Hours in Period .......... 2184 Page 68 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 300ft Stabi lity 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 1 2 2 1 5 5 1 1 18 NNE 0 1 0 0 1 2 3 6 19 8 0 40 NE 0 0 0 0 0 4 6 5 3 0 0 18 ENE 0 0 0 2 8 7 6 1 4 0 0 28 E 0 0 1 2 8 9 5 1 15 3 1 45 ESE 0 0 0 1 4 5 5 4 19 16 2 56 SE 0 0 0 0 5 3 4 8 25 8 0 53 SSE 0 0 0 0 1 3 7 10 10 6 2 39 S 0 0 0 0 1 4 4 8 23 15 13 68 SSW 0 0 0 0 1 3 3 11 19 13 9 59 SW 0 0 0 0 5 1 4 7 14 2 4 37 WSW 0 0 0 1 1 0 7 5 3 3 1 21 W 0 0 1 0 3 1 3 7 19 6 0 40 WNW 0 0 0 1 4 4 6 7 20 4 0 46 NW 0 0 0 0 2 3 7 3 6 2 0 23 NNW 0 0 0 0 3 3 1 3 2 0 1 13 Tot 0 1 2 8 49 54 72 91 206 87 34 604 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data .. 604 Hours of Missing Data 0 Hours in Period ... ...... 2184 Page 69 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 300ft Stabili ty 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 2 2 4 0 0 0 8 NNE 0 1 0 0 1 0 1 1 0 0 0 4 NE 0 0 1 1 0 2 0 2 1 0 0 7 ENE 0 0 0 1 1 1 0 0 0 0 0 3 E 0 0 0 1 1 0 0 1 0 0 0 3 ESE 0 0 0 0 0 1 0 0 0 0 0 1 SE 0 0 0 0 1 2 3 0 2 0 0 8 SSE 0 0 1 0 0 2 3 6 0 0 0 12 S 0 0 0 1 2 4 4 3 4 0 0 18 SSW 0 0 1 0 2 0 3 0 4 4 0 14 SW 0 0 1 0 0 1 0 2 10 0 0 14 WSW 0 0 0 0 1 2 1 0 8 1 0 13 W 0 0 0 0 1 2 3 2 3 1 0 12 WNW 0 0 0 0 0 1 3 1 0 0 0 5 NW 0 0 0 0 1 1 1 2 1 0 0 6 NNW 0 1 0 2 1 0 0 0 0 0 0 4 Tot 0 2 6 12 21 24 24 33 6 0 132 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data .. 132 Hours of Missing Data 0 Hours in Period ... ...... 2184 Page 70 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Apr - Jun for years 2011 - 2011 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 1 0 1 0 0 2 NNE 0 0 0 0 0 1 1 0 0 0 2 NE 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 1 1 0 0 0 0 0 2 ESE 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 1 0 0 0 1 0 0 2 S 0 0 0 1 1 0 0 0 0 0 2 SSW 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 0 0 0 0 0 0 W 0 0 0 0 1 1 0 0 0 0 2 WNW 0 0 0 0 0 0 0 1 0 0 1 NW 0 0 1 0 0 0 1 0 0 0 2 NNW 0 0 0 1 3 0 0 1 0 0 5 Tot 0 0 1 4 6 2 4 0 0 20 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 20 Hours of Missing Data . 0 Hours in Period ... ...... 2184 Page 71 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 8 23 22 21 33 14 8 7 0 0 136 NNE 0 4 6 15 34 35 14 9 17 1 0 135 NE 0 6 18 21 43 14 14 5 0 0 0 121 ENE 0 3 11 18 38 10 3 0 0 0 0 83 E 0 5 12 19 53 16 4 1 0 0 0 110 ESE 0 10 10 10 28 26 11 0 1 0 0 96 SE 1 9 6 17 17 9 14 9 1 0 0 83 SSE 0 19 21 23 59 17 5 4 8 1 0 157 S 1 14 17 23 41 32 15 10 8 0 0 161 SSW 0 13 30 26 44 32 10 4 7 0 0 166 SW 0 17 26 27 69 20 11 5 0 0 0 175 WSW 0 13 18 10 34 29 20 12 1 0 0 137 W 1 17 19 14 41 18 4 3 1 0 0 118 WNW 0 16 24 13 37 13 7 3 S 3 0 121 NW 0 11 38 31 39 21 10 5 3 3 0 161 NNW 0 10 18 26 67 68 30 9 13 0 0 241 Tot 3 175 297 315 665 393 186 87 72 8 0 2201 Hours of Calm ... ........ 4 Hours of Variable Direction 0 Hours of Valid Data . ... 2205 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 72 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 1 1 3 6 6 3 2 3 0 0 25 NNE 0 0 0 4 9 11 3 2 9 0 0 38 NE 0 0 2 4 9 3 6 2 0 0 0 26 ENE 0 0 2 5 3 3 2 0 0 0 0 15 E 0 0 2 4 5 3 0 0 0 0 0 14 ESE 0 0 1 3 5 5 2 0 0 0 0 16 SE 0 0 1 5 5 4 4 1 0 0 20 0

SSE 0 0 1 5 14 2 2 1 1 0 0 26 S 0 0 2 2 4 11 3 2 3 0 0 27 SSW 0 0 2 3 13 8 3 2 2 0 0 33 SW 0 0 0 5 21 11 3 5 0 0 0 45 WSW 0 0 1 2 15 19 12 9 1 0 0 59 W 0 1 0 7 8 11 2 2 1 0 0 32 WNW 0 0 2 5 8 3 0 2 3 0 0 23 NW 0 0 3 3 13 8 4 3 0 0 0 34 NNW 0 0 3 0 20 20 6 2 5 0 0 56 Tot 0 2 23 60 158 128 55 35 28 0 0 489 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 489 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 73 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 0 0 4 2 2 0 0 9 NNE 0 0 0 0 3 1 1 0 1 0 0 6 NE 0 0 0 2 1 1 0 0 0 0 5 ENE 0 0 1 0 1 1 0 0 0 0 0 3 E 0 0 0 0 2 0 0 0 0 0 0 2 ESE 0 0 1 0 0 0 0 0 0 0 0 1 SE 0 0 0 1 0 2 0 0 0 0 0 3 SSE 0 0 1 0 1 1 0 0 0 0 0 3 S 0 0 0 0 1 3 2 0 0 0 0 6 SSW 0 0 1 1 0 2 0 0 0 0 0 4 SW 0 0 1 1 1 1 0 0 0 0 5 WSW 0 0 0 0 0 2 4 0 0 0 0 6 W 0 0 1 0 3 0 0 0 0 0 0 4 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 1 2 4 1 2 0 0 0 10 Tot 0 0 7 15 18 14 4 3 0 0 67 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 67 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 74 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 2 1 0 1 0 0 5 NNE 0 0 0 0 0 0 1 2 3 0 0 6 NE 0 0 1 1 1 0 1 0 0 0 0 4 ENE 0 0 0 0 1 2 0 0 0 0 0 3 E 0 0 0 1 1 0 0 0 0 0 0 2 ESE 0 0 0 0 1 0 0 0 0 0 0 1 SE 0 0 0 1 0 1 0 0 0 0 0 2 SSE 0 0 1 0 3 2 0 0 0 0 0 6 S 0 0 0 0 1 3 0 3 1 0 0 8 SSW 0 0 0 0 2 2 1 0 0 0 0 5 SW 0 0 0 1 2 1 0 0 0 0 0 4 WSW 0 0 0 1 0 2 1 1 0 0 0 5 W 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 1 1 0 1 0 0 0 0 3 NW 0 0 1 0 0 1 0 0 0 0 0 2 NNW 0 0 0 1 1 1 3 2 2 0 0 10 Tot 0 0 3 7 15 17 9 8 7 0 0 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 66 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 75 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 1 0 3 5 2 2 3 1 0 0 17 NNE 0 1 2 2 4 7 2 4 27 4 1 0 NE 0 1 3 5 6 7 3 1 0 26 0 0 ENE 0 0 1 5 9 1 0 0 0 0 0 16 E 0 0 1 1 9 6 0 0 0 0 0 17 ESE 0 2 1 1 7 9 2 0 1 0 0 23 SE 0 0 1 1 1 1 3 3 1 0 0 11 SSE 0 0 2 2 4 5 2 1 1 0 0 17 S 0 1 1 2 6 1 2 3 3 0 0 19 SSW 0 0 2 0 2 6 4 2 0 5 0 21 SW 0 0 4 3 6 2 5 0 0 0 20 0

WSW 0 0 1 1 5 3 1 1 0 0 0 12 W 0 2 1 1 2 4 0 0 0 0 0 10 WNW 0 1 1 0 9 5 3 0 1 0 0 20 NW 0 2 2 5 4 2 2 0 0 0 0 17 NNW 0 0 2 1 13 16 7 2 3 0 0 44 Tot 0 11 25 33 92 77 38 21 19 1 0 317 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data .. 317 Hours of Missing Data 3 Hours in Period ... ...... 2208 Page 76 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 9 8 7 20 4 1 0 0 0 49 NNE 0 2 1 8 17 16 7 1 0 0 0 52 NE 0 2 9 9 26 3 3 2 0 0 0 54 ENE 0 1 6 7 24 3 1 0 0 0 0 42 E 0 2 8 12 34 7 4 1 0 0 0 68 ESE 0 2 5 5 13 12 7 0 0 0 0 44 SE 0 3 3 4 4 1 7 5 0 0 0 27 SSE 0 3 4 8 23 6 1 2 6 1 0 54 S 1 6 8 8 22 10 8 2 1 0 0 66 SSW 0 4 4 11 17 10 2 0 0 0 0 48 SW 0 1 5 3 9 4 2 0 0 0 0 24 WSW 0 1 1 1 7 3 2 1 0 0 0 16 W 0 2 2 4 26 3 2 1 0 0 0 40 WNW 0 3 8 4 18 5 3 0 2 3 0 46 NW 0 3 13 8 18 10 4 2 3 3 0 64 NNW 0 4 7 13 21 21 1i 1 3 0 0 81 Tot 1 39 93 113 286 134 68 19 15 7 0 775 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 775 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 77 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 5 12 7 2 3 0 0 0 0 0 29 NNE 0 1 3 0 1 0 0 0 0 0 0 5 NE 0 3 0 0 0 0 0 0 0 0 4 ENE 0 2 1 1 0 0 0 0 0 0 0 4 E 0 2 1 1 2 0 0 0 0 0 0 6 ESE 0 5 1 1 2 0 0 0 0 0 0 9 SE 1 3 1 5 7 0 0 0 0 0 0 17 SSE 0 11 10 7 14 1 0 0 0 0 0 43 S 0 6 4 11 7 4 0 0 0 0 0 32 SSW 0 5 13 9 9 4 0 0 0 0 0 40 SW 0 8 10 9 24 1 0 0 0 0 0 52 WSW 0 7 9 4 4 0 0 0 0 0 0 24 W 0 7 12 2 2 0 0 0 0 0 0 23 WNW 0 9 11 3 1 0 0 0 0 0 0 24 NW 0 5 12 9 4 0 0 0 0 0 0 30 NNW 0 4 6 8 9 6 2 0 0 0 0 35 Tot 1 81 109 77 88 19 2 0 0 0 0 377 Hours of Calm ... ........ 2 Hours of Variable Direction 0 Hours of Valid Data . ... 379 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 78 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 1 1 0 0 0 0 0 0 0 0 2 NNE 0 0 0 1 0 0 0 0 0 0 0 1 NE 0 2 0 0 0 0 0 0 0 0 0 2 ENE 0 0 0 0 0 0 0 0 0 0 0 0 E 0 1 0 0 0 0 0 0 0 0 0 1 ESE 0 1 1 0 0 0 0 0 0 0 0 2 SE 0 3 0 0 0 0 0 0 0 0 0 3 SSE 0 S 2 1 0 0 0 0 0 0 0 8 S 0 1 2 0 0 0 0 0 0 0 0 3 SSW 0 4 8 2 1 0 0 0 0 0 0 15 SW 0 8 6 5 6 0 0 0 0 0 0 25 WSW 0 5 6 1 3 0 0 0 0 0 0 15 W 1 5 3 0 0 0 0 0 0 0 0 9 WNW 0 3 2 0 0 0 0 0 0 0 0 5 NW 0 1 7 6 0 0 0 0 0 0 0 14 NNW 0 2 0 2 1 0 0 0 0 0 0 5 Tot 1 42 38 18 11 0 0 0 0 0 0 110 Hours of Calm ...... ....... 2 Hours of Variable Direction 0 Hours of Valid Data . . .. 112 Hours of Missing Data . . 3 Hours in Period ...... .. 2208 Page 79 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 0 2 15 34 23 15 36 14 7 0 146 NNE 0 4 6 11 28 34 26 20 21 8 1 159 NE 0 3 12 23 48 18 11 13 3 0 0 131 ENE 0 2 8 12 31 28 14 2 0 0 0 97 E 0 1 4 6 26 27 24 10 3 1 0 102 ESE 0 5 5 13 23 20 12 16 13 0 0 107 SE 0 0 5 9 25 22 20 11 10 1 0 103 SSE 0 3 8 11 30 33 26 10 8 10 2 141 S 0 0 4 11 22 43 39 20 19 3 0 161 SSW 0 2 5 12 28 40 38 15 13 3 0 156 SW 0 1 7 13 39 44 34 18 13 0 0 169 WSW 0 6 8 4 31 30 20 12 19 2 0 132 W 0 7 7 11 43 30 28 8 4 1 0 139 WNW 0 5 7 13 22 17 16 8 8 2 6 104 NW 0 4 9 15 21 32 27 18 7 3 6 142 NNW 0 4 5 8 28 53 45 36 28 7 1 215 Tot 0 47 102 187 479 494 395 253 183 48 16 2204 Hours of Calm ... ........ 1 Hours of Variable Direction 0 Hours of Valid Data . ... 2205 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 80 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 Stability Class A Extremely Unstable based on Lapse Rate Elevations:: Winds 150ft Stability 15Oft 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 2 5 2 4 3 3 3 0 23 NNE 0 0 0 0 7 9 5 4 8 4 0 37 NE 0 0 1 7 7 4 3 6 0 0 0 28 ENE 0 0 1 2 3 3 4 0 0 0 0 13 E 0 0 0 4 7 0 1 0 0 0 0 12 ESE 0 0 0 3 5 4 3 2 0 0 0 17 SE 0 0 1 3 8 4 3 2 1 0 0 22 SSE 0 0 2 2 10 4 2 3 0 1 0 24 S 0 0 0 1 6 7 9 3 6 2 0 34 SSW 0 0 0 4 8 10 6 2 1 0 0 31 SW 0 0 0 2 16 14 10 4 8 0 0 54 WSW 0 0 0 2 9 9 7 7 13 1 0 48 W 0 1 0 1 11 9 7 0 1 1 0 31 WNW 0 1 1 3 7 2 2 0 2 2 0 20 NW 0 0 2 3 11 10 8 4 3 0 0 41 NNW 0 0 1 1 6 19 16 4 3 4 0 54 Tot 0 2 10 40 126 110 90 44 49 18 0 489 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 489 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 81 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 0 3 2 2 0 9 NNE 0 0 0 1 2 0 1 0 1 0 6 1

NE 0 0 1 1 2 1 0 0 1 0 0 6 1

ENE 0 0 0 0 0 0 2 0 0 0 0 0 2 E 0 0 0 0 1 0 0 0 0 0 0 1 ESE 0 0 0 01 0 0 1 0 0 0 0 2 SE 0 0 0 0 0 1 0 0 0 0 2 SSE 0 0 1 0 2 1 1 0 0 0 0 5 S 0 0 0 1 0 1 2 2 0 0 0 6 SSW 0 0 1 0 0 0 1 0 0 0 0 2 SW 0 0 0 0 1 1 1 1 1 0 0 5 WSW 0 0 1 0 0 0 2 3 0 0 0 6 W 0 0 1 0 1 2 0 0 0 0 0 4 WNW 0 0 0 0 0 0 0 0 0 0 0 0 NW 0 0 0 0 0 0 1 0 0 0 0 1 NNW 0 0 0 i 1 2 2 1 3 0 0 10 Tot 0 0 5 7 10 12 12 11 7 3 0 67 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data .. 67 Hours of Missing Data 3 Hours in Period ... ...... 2208 Page 82 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 2 0 1 2 1 0 6 NNE 0 0 0 0 0 0 0 1 2 1 0 4 NE 0 0 1 0 2 0 1 1 0 0 0 5 ENE 0 0 0 0 0 1 1 0 0 0 0 2 E 0 0 0 0 1 0 0 0 0 0 2 ESE 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 3 0 1 0 0 0 0 4 SSE 0 0 1 0 1 2 1 0 0 0 0 5 S 0 0 0 0 1 2 1 0 3 1 0 8 SSW 0 0 0 0 1 4 0 1 0 0 0 6 SW 0 0 0 1 1 0 1 0 0 0 0 3 WSW 0 0 0 0 1 2 0 0 2 0 0 5 W 0 0 0 0 0 0 0 1 0 0 0 1 WNW 0 0 0 1 1 0 0 0 0 0 0 2 NW 0 0 0 1 0 0 2 0 0 0 0 3 NNW 0 0 0 1 0 2 0 2 4 1 0 10 Tot 0 0 2 4 12 16 8 7 13 4 0 66 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 66 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 83 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 2 4 4 1 2 4 1 0 18 NNE 0 0 2 1 3 7 3 2 6 2 1 27 NE 0 1 2 4 6 7 4 2 1 0 0 27 ENE 0 0 0 2 8 4 2 0 0 0 0 16 E 0 1 1 0 5 3 6 2 0 1 0 19 ESE 0 1 1 1 4 2 3 7 1 0 0 20 SE 0 0 0 1 1 1 2 4 2 1 0 12 SSE 0 1 1 3 2 6 2 2 1 4 0 22 S 0 0 1 0 3 3 2 0 4 0 0 13 SSW 0 0 1 2 0 4 3 2 7 3 0 22 SW 0 0 3 4 2 3 1 2 3 0 0 18 WSW 0 1 0 0 3 5 1 1 1 1 0 13 W 0 0 1 2 3 0 3 3 1 0 0 13 WNW 0 2 1 1 3 6 2 3 1 0 0 19 NW 0 1 0 3 3 3 3 3 1 1 0 18 NNW 0 0 2 1 4 11 10 8 2 2 0 40 Tot 0 8 16 27 54 69 48 43 35 16 1 317 Hours of Calm ........ 0 Hours of Variable Direc:tion 0 Hours of Valid Data . . 317 Hours of Missing Data 3 Hours in Period . ... 2208 Page 84 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 4 12 5 7 20 2 0 0 50 NNE 0 1 2 4 12 12 17 11 5 0 0 64 NE 0 0 4 7 28 6 3 4 1 0 0 53 ENE 0 0 3 6 19 17 7 2 0 0 0 54 E 0 0 0 2 9 21 17 7 3 0 0 59 ESE 0 1 3 4 10 13 5 7 12 0 0 55 SE 0 0 2 2 6 5 4 2 7 0 0 28 SSE 0 1 1 3 6 11 14 4 7 5 2 54 S 0 0 2 2 4 21 17 11 5 0 0 62 SSW 0 1 0 3 8 9 15 4 1 0 0 41 SW 0 0 1 3 4 6 7 2 1 0 0 24 WSW 0 0 1 0 1 7 4 1 3 0 0 17 W 0 1 2 1 6 14 17 4 2 0 0 47 WNW 0 1 3 3 2 6 10 5 5 0 6 41 NW 0 1 2 4 5 13 9 10 3 2 6 55 NNW 0 2 1 1 13 11 12 17 13 0 1 71 Tot 0 9 27 49 145 177 165 Iil 70 7 15 775 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 775 Hours of Missing Data . 3 Hours in Period .......... 2208 Page 85 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 0 1 6 8 5 3 7 1 0 0 31 NNE 0 1 2 5 5 4 1 1 0 0 0 19 NE 0 1 3 4 2 0 0 0 0 0 0 10 ENE 0 1 4 2 1 1 0 0 0 0 0 9 E 0 0 3 0 1 2 0 1 0 0 0 7 ESE 0 2 1 2 4 1 0 0 0 0 0 10 SE 0 0 1 2 6 11 8 3 0 0 0 31 SSE 0 1 2 2 4 8 6 1 0 0 0 24 S 0 0 1 5 5 9 8 4 1 0 0 33 SSW 0 0 1 2 8 12 13 S 4 0 0 45 SW 0 0 1 3 7 14 13 7 0 0 0 45 WSW 0 4 3 0 9 4 2 0 0 0 0 22 W 0 5 1 7 16 4 1 0 0 0 0 34 WNW 0 0 1 3 8 3 2 0 0 0 0 17 NW 0 1 2 1 2 6 4 1 0 0 0 17 NNW 0 1 0 2 3 8 3 4 3 0 0 24 Tot 0 17 27 46 89 92 64 34 9 0 0 378 Hours of Calm ...... ....... 1 Hours of Variable Direction 0 Hours of Valid Data . . .. 379 Hours of Missing Data . . 3 Hours in Period ...... .. 2208 Page 86 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 0 0 4 5 0 0 0 0 0 9 NNE 0 2 0 0 0 0 0 0 0 0 0 2 NE 0 1 0 0 1 0 0 0 0 0 0 2 ENE 0 1 0 0 0 0 0 0 0 0 0 1 E 0 0 0 0 2 0 0 0 0 0 0 2 ESE 0 1 0 2 0 0 0 0 0 0 0 3 SE 0 0 1 0 1 1 1 0 0 0 0 4 SSE 0 0 0 1 5 1 0 0 0 0 0 7 S 0 0 0 2 3 0 0 0 0 0 0 5 SSW 0 1 2 1 3 1 0 1 0 0 0 9 SW 0 1 2 0 8 6 1 2 0 0 0 20 WSW 0 1 3 2 8 3 4 0 0 0 0 21 W 0 0 2 0 6 1 0 0 0 0 0 9 WNW 0 1 1 2 1 0 0 0 0 0 0 5 NW 0 1 3 3 0 0 0 0 0 0 0 7 NNW 0 1 1 1 1 0 2 0 0 0 0 6 Tot 0 11 15 14 43 18 8 3 0 0 0 112 Hours of Calm ...... ....... 0 Hours of Variable Direction 0 Hours of Valid Data . . .. 112 Hours of Missing Data . . 3 Hours in Period ...... .. 2208 Page 87 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 7 4 18 22 21 21 36 33 6 168 NNE 0 2 5 4 21 26 22 24 34 21 2 161 NE 0 3 8 11 21 25 28 16 18 7 1 138 ENE 0 2 6 13 34 36 15 7 2 0 0 115 E 0 1 2 9 25 25 22 16 13 1 0 114 ESE 0 5 5 8 11 18 13 18 17 14 1 110 SE 0 3 4 8 24 17 14 16 22 5 1 114 SSE 0 2 6 10 17 22 15 12 17 5 6 112 S 0 1 4 5 9 21 29 20 40 12 5 146 SSW 0 1 6 5 22 17 30 22 42 24 0 169 SW 0 2 8 8 21 24 26 29 45 2 0 165 WSW 0 0 4 9 34 21 36 20 32 6 0 162 W 0 2 5 11 23 20 27 13 17 2 0 120 WNW 0 3 4 6 19 21 14 23 18 9 5 122 NW 0 0 4 5 20 20 14 21 19 5 8 116 NNW 0 1 4 6 18 24 39 30 33 11 7 173 Tot 0 28 82 122 337 359 365 308 405 157 42 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 88 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 -. 2011 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 1 4 3 3 2 0 0 14 NNE 0 0 1 3 4 2 1 0 5 0 17 1

NE 0 0 2 7 7 4 4 2 1 0 28 ENE 0 0 0 0 2 1 2 1 0 0 0 6 E 0 0 21 0 0 1 1 2 0 0 0 0 5 1

ESE 0 0 1 3 2 3 0 2 0 0 0 SE 0 0 0 0 6 5 3 3 1 0 0 18 SSE 0 0 0 2 6 6 0 0 1 0 0 15 S 0 0 2 0 3 3 8 2 2 0 0 20 SSW 0 0 0 2 6 4 2 1 0 3 0 18 SW 0 0 0 0 6 11 6 1 3 1 0 28 11 WSW 0 0 3 5 10 9 3 8 2 0 41 W 0 0 0 2 5 4 2 0 2 1 0 16 WNW 0 0 0 2 5 6 1 2 1 2 1 20 NW 0 0 1 1 3 4 2 2 2 0 0 15 NNW 0 0 2 1 4 8 9 4 0 1 0 29 Tot 0 0 11 19 65 81 55 29 24 16 1 301 Hours of Calm ........ 0 Hours of Variable Direc tion 0 Hours of Valid Data . . 301 Hours of Missing Data 3 Hours in Period . . .. 2208 Page 89 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 2 1 2 0 0 2 1 8 NNE 0 0 0 0 2 2 2 2 1 4 1 14 NE 0 0 0 0 1 1 0 2 1 1 0 6 ENE 0 0 2 3 3 2 0 1 0 0 0 11 E 0 0 0 1 3 0 0 0 0 0 0 4 ESE 0 0 0 2 3 0 1 2 0 0 0 8 SE 0 0 0 0 1 1 1 0 0 0 0 3 SSE 0 1 0 2 2 0 0 0 1 1 0 7 S 0 0 0 0 1 0 2 1 1 2 0 7 SSW 0 0 0 0 1 3 1 2 2 0 0 9 SW 0 0 0 0 0 4 2 2 3 0 0 11 WSW 0 0 0 1 6 2 2 1 4 0 0 16 W 0 0 1 0 3 1 2 1 2 0 0 10 WNW 0 0 0 1 2 0 1 0 0 1 0 5 NW 0 0 0 0 2 1 3 1 1 1 0 9 NNW 0 0 0 1 2 4 5 3 1 2 1 19 Tot 0 1 3 11 34 22 24 18 17 14 3 147 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 147 Hours of Missing Data . 3 Hours in Period .......... 2208 Page 90 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 1 0 0 2 1 3 6 4 0 17 NNE 0 0 0 0 0 4 1 1 2 3 0 11 NE 0 0 2 1 2 1 1 1 1 1 0 10 ENE 0 0 0 0 1 1 0 0 0 0 3 E 0 0 0 0 3 3 1 0 0 0 0 7 ESE 0 0 0 1 0 0 1 0 0 0 0 2 SE 0 0 0 1 1 1 1 1 0 0 1 6 SSE 0 0 1 1 2 2 2 2 0 0 0 10 S 0 0 1 1 2 0 4 1 1 3 0 13 SSW 0 0 1 0 1 1 2 1 0 1 0 7 SW 0 0 0 1 3 0 3 2 0 0 0 9 WSW 0 0 0 0 1 2 2 2 6 1 0 14 W 0 0 0 1 0 1 3 0 0 0 0 5 WNW 0 0 2 1 2 2 1 0 0 0 0 8 NW 0 0 0 0 2 0 2 2 0 0 0 6 NNW 0 0 1 1 3 4 2 2 1 0 0 14 Tot 0 0 9 9 23 24 28 18 17 13 1 142 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 142 Hours of Missing Data . 3 Hours in Period .......... 2208 Page 91 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 2 2 4 6 6 4 4 2 1 31 NNE 0 1 0 1 5 4 7 5 13 3 1 40 NE 0 3 2 5 5 7 12 4 10 2 1 51 ENE 0 1 2 4 14 18 5 3 0 0 0 47 E 0 0 1 0 7 7 7 5 4 0 0 31 ESE 0 2 0 0 1 2 S 6 6 0 1 23 SE 0 1 1 3 4 1 1 3 8 3 0 25 SSE 0 0 2 2 2 2 4 3 4 3 6 28 S 0 0 0 1 1 5 2 1 10 4 4 28 SSW 0 0 2 2 1 4 3 5 4 10 0 31 SW 0 0 2 3 3 1 6 2 5 0 0 22 WSW 0 0 2 0 3 2 7 1 2 3 0 20 W 0 1 0 3 4 1 5 2 4 0 0 20 WNW 0 2 1 1 3 8 2 6 7 1 2 33 NW 0 0 0 1 7 4 3 5 4 0 7 31 NNW 0 1 1 0 3 6 15 14 13 3 6 62 Tot 0 12 18 28 67 78 90 69 98 34 29 523 Hours of Calm ...... ....... 0 Hours of Variable Direction 0 Hours of Valid Data . . .. 523 Hours of Missing Data . . 3 Hours in Period ...... .. 2208 Page 92 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 300ft Stabi lity 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 2 7 6 6 5 17 8 0 52 NNE 0 1 3 1 8 7 3 7 15 0 0 45 NE 0 0 3 0 6 8 6 4 2 0 34 ENE 0 1 2 5 13 14 7 2 2 0 0 46 E 0 0 0 7 7 11 11 10 9 1 0 56 ESE 0 2 2 1 4 10 4 5 10 12 0 50 SE 0 1 1 4 9 8 5 5 11 2 0 46 SSE 0 1 2 2 3 8 5 3 5 1 0 30 S 0 0 0 1 0 6 5 10 11 2 1 36 SSW 0 1 1 1 7 3 14 11 25 2 0 65 SW 0 1 3 1 4 2 6 10 13 0 0 40 WSW 0 0 0 2 4 0 9 4 4 0 0 23 W 0 0 1 2 4 8 6 8 5 1 0 35 WNW 0 1 1 0 4 3 6 12 10 5 2 44 NW 0 0 2 2 4 6 1 11 10 2 1 39 NNW 0 0 0 2 1 1 5 5 15 5 0 34 Tot 0 9 22 33 85 101 99 113 166 43 4 675 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 675 Hours of Missing Data . 3 Hours in Period .......... 2208 Page 93 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 2 0 3 2 3 5 7 17 3 42 NNE 0 0 1 1 3 5 4 7 3 6 0 30 NE 0 0 0 3 0 1 5 0 0 0 0 9 ENE 0 0 0 1 1 0 0 0 0 0 0 2 E 0 1 0 1 4 3 1 1 0 0 0 11 ESE 0 1 2 1 1 3 2 3 1 2 0 16 SE 0 1 2 0 3 1 3 4 2 0 0 16 SSE 0 0 1 1 2 4 3 3 6 0 0 20 S 0 1 1 2 2 7 7 5 15 1 0 41 SSW 0 0 2 0 5 0 8 2 11 6 0 34 SW 0 1 3 3 5 4 3 12 21 1 0 53 WSW 0 0 1 3 15 5 4 4 7 0 0 39 W 0 1 3 3 7 3 6 2 3 0 0 28 WNW 0 0 0 0 2 2 2 3 0 0 0 9 NW 0 0 1 0 2 5 3 0 2 2 0 15 NNW 0 0 0 1 4 1 3 2 3 0 0 14 Tot 0 6 19 20 59 46 57 53 81 35 3 379 Hours of Calm ........ 0 Hours of Variable Direcction 0 Hours of Valid Data . . 379 Hours of Missing Data 3 Hours in Period . . .. 2208 Page 94 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jul - Sep for years 2011 - 2011 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 1 1 0 1 0 0 1 4 NNE 0 0 0 0 0 0 3 1 0 0 0 4 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 1 1 0 0 0 2 S 0 0 0 0 0 0 1 0 0 0 0 1 SSW 0 0 0 0 1 2 0 0 0 2 0 5 SW 0 0 0 0 0 2 0 0 0 0 0 2 WSW 0 0 0 0 0 0 3 5 1 0 0 9 W 0 0 0 0 0 2 3 0 1 0 0 6 WNW 0 0 0 1 1 0 1 0 0 0 0 3 NW 0 0 0 1 0 0 0 0 0 0 0 1 NNW 0 0 0 0 1 0 0 0 0 0 0 1 Tot 0 0 0 2 4 7 12 2 2 1 38 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 38 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 95 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 4 4 11 25 42 14 13 6 0 125 NNE 0 2 1 3 6 11 19 10 6 4 5 67 NE 0 1 8 6 15 24 5 5 7 2 0 73 ENE 0 5 2 8 27 10 0 0 0 0 0 52 E 0 4 6 6 18 17 0 0 0 0 0 51 ESE 1 2 9 8 16 10 4 0 0 0 0 50 SE 0 10 13 4 23 26 12 10 1 2 0 101 SSE 0 7 25 25 78 27 28 26 19 1 0 236 S 0 4 19 27 49 54 51 61 47 36 8 356 SSW 0 4 13 18 25 30 16 19 29 8 3 165 SW 0 7 9 14 36 16 26 6 8 2 4 128 WSW 0 7 12 14 35 20 14 9 4 0 1 116 W 0 10 14 17 51 42 40 37 32 9 0 252 WNW 0 5 5 13 32 23 15 7 14 5 0 119 NW 0 10 15 15 28 38 22 18 16 1 0 163 NNW 0 2 4 6 27 42 27 18 17 7 0 150 Tot 1 86 159 188 477 415 321 240 213 83 21 2204 Hours of Calm ... ........ 1 Hours of Variable Direction 0 Hours of Valid Data . ... 2205 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 96 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 1 1 2 1 4 1 0 0 0 10 NNE 0 0 0 1 0 2 0 1 0 0 0 4 NE 0 0 2 0 1 2 0 0 0 0 0 5 ENE 0 0 0 0 3 2 0 0 0 0 0 5 R 0 0 1 0 0 1 0 0 0 0 0 2 ESE 0 0 1 0 0 0 0 0 0 0 0 1 SE 0 0 0 0 1 2 0 2 0 0 0 5 SSE 0 0 0 1 4 5 4 3 0 0 0 17 S 0 0 2 0 0 6 4 13 2 1 0 28 SEW 0 0 0 1 0 4 0 5 5 0 0 15 SW 0 0 0 0 2 0 6 1 1 0 0 10 WEW 0 0 0 1 11 3 6 5 2 0 0 28 W 0 1 0 2 9 4 2 4 8 2 0 32 WNW 0 0 0 0 3 6 2 2 7 0 0 20 NW 0 0 0 1 0 2 4 0 3 0 0 10 NNW 0 0 0 0 2 3 0 0 1 0 0 6 Tot 0 1 7 8 38 43 32 37 29 3 0 198 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 198 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 97 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 Stability Class B Moderately Unstable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Sp eed 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 1 0 2 NNE 0 0 0 0 0 1 1 0 0 0 3 NE 0 0 0 0 2 0 0 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 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 1 0 0 2 1 1 0 0 0 5 S 0 0 0 0 0 1 2 0 0 0 4 SSW 0 0 0 0 1 0 1 2 0 0 9 SW 0 0 0 0 0 0 1 0 0 0 0 2 WSW 0 1 0 0 1 1 1 0 0 0 3 W 0 0 1 0 0 0 0 0 0 3 WNW 0 0 0 0 0 1 0 0 0 0 NW 0 0 0 0 0 0 0 0 0 0 0 NNW 0 0 0 0 0 0 1 0 0 0 2 Tot 0 0 1 1 4 6 8 7 6 3 0 36 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 36 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 98 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 Stability Class C Slightly Unstable based on Lapse Rate Elevations:: Winds 35ft Stabililty 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 1 0 0 0 0 2 NNE 0 0 0 0 0 2 0 0 0 0 3 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 1 0 2 0 0 1 0 0 0 4 S 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 1 0 0 0 1 0 2 SW 0 0 1 0 0 0 1 0 0 0 0 2 WSW 0 0 0 0 1 1 0 0 0 0 0 2 W 0 0 0 0 2 0 0 0 4 0 0 6 WNW 0 0 0 0 0 0 1 0 1 0 0 2 NW 0 0 0 0 0 2 0 2 0 0 0 4 NNW 0 0 0 0 1 0 0 1 1 0 0 3 Tot 0 0 2 0 6 6 5 4 6 1 0 30 Hours of Calm ... ......... 0 Hours of Variable Direction 0 Hours of Valid Data . ... 30 Hours of Missing Data . 3 Hours in Period .......... 2208 Page 99 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 4 11 19 5 10 4 0 55 NNE 0 1 1 0 1 5 11 6 2 3 0 30 NE 0 1 2 1 2 16 4 4 5 2 0 37 ENE 0 1 1 0 7 6 0 0 0 0 0 15 E 0 0 0 0 6 12 0 0 0 0 0 18 ESE 0 0 0 1 1 0 0 0 0 0 0 2 SE 0 1 0 1 1 3 2 2 0 1 0 11 SSE 0 2 0 2 4 3 7 6 3 0 0 27 S 0 0 2 3 8 12 5 7 11 12 6 66 SSW 0 0 1 4 5 6 5 8 6 3 2 40 SW 0 0 0 1 4 1 4 3 2 0 4 19 WSW 0 0 0 1 6 2 3 1 0 0 1 14 W 0 0 1 1 8 2 8 17 13 6 0 56 WNW 0 0 1 4 9 7 6 3 5 4 0 39 NW 0 2 2 6 8 16 7 13 3 0 0 57 NNW 0 0 0 1 12 12 14 7 0 0 10 56 Tot 0 8 12 27 86 114 95 85 67 35 13 542 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 542 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 100 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 2 1 5 10 17 8 3 1 0 48 NNE 0 1 0 2 3 2 5 2 4 1 5 25 NE 0 0 2 5 10 6 1 1 2 0 0 27 ENE 0 3 1 8 17 2 0 0 0 0 0 31 E 0 0 0 1 11 4 0 0 0 0 0 16 ESE 0 0 1 0 5 6 4 0 0 0 0 16 SE 0 0 3 0 12 8 8 3 1 1 0 36 SSE 0 2 10 9 38 15 14 14 16 1 0 119 S 0 2 7 10 20 28 36 39 34 23 2 201 SSW 0 0 4 2 12 15 10 4 13 4 1 65 SW 0 2 2 6 6 9 13 2 4 2 0 46 WSW 0 4 4 3 11 10 4 3 1 0 0 40 W 0 3 4 10 27 36 29 15 7 0 0 131 WNW 0 1 3 7 15 9 6 2 1 0 0 44 NW 0 2 2 4 19 18 11 3 10 1 0 70 NNW 0 1 1 1 12 26 12 7 8 7 0 75 Tot 0 22 46 69 223 204 170 103 104 41 8 990 Hours of Calm ...... ....... 0 Hours of Variable Direction 0 Hours of Valid Data . . .. 990 Hours of Missing Data . . 3 Hours in Period ...... .. 2208 Page 101 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 Stability Class F Moderately Stable based on Lapse Rate Elevations:: Winds 35ft Stability 150ft Wind Wind Sp eed 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 0 1 0 2 0 0 0 0 0 6 NNE 0 0 0 0 2 0 0 0 0 0 0 2 NE 0 0 2 0 0 0 0 0 0 0 0 2 ENE 0 1 0 0 0 0 0 0 0 0 0 1 E 0 0 2 5 1 0 0 0 0 0 0 8 ESE 0 0 3 5 8 4 0 0 0 0 0 20 SE 0 6 6 0 8 11 2 3 0 0 0 36 SSE 0 2 10 11 26 2 2 1 0 0 0 54 S 0 1 7 13 18 7 5 0 0 0 0 51 SSW 0 2 4 11 6 4 0 0 0 0 0 27 SW 0 3 4 5 14 5 1 0 0 0 0 32 WSW 0 0 6 6 5 2 1 0 1 0 0 21 W 0 2 4 4 5 0 0 0 0 0 0 15 WNW 0 0 0 2 5 1 0 0 0 0 0 8 NW 0 2 6 2 1 0 0 0 0 0 0 11 NNW 0 1 3 2 0 0 0 0 0 0 0 6 Tot 0 23 57 67 99 38 11 4 1 0 0 300 Hours of Calm ... ........ 1 Hours of Variable Direction 0 Hours of Valid Data . ... 301 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 102 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 2 0 0 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 4 3 0 0 0 0 0 0 0 0 7 ESE 1 2 4 2 2 0 0 0 0 0 0 11 SE 0 3 4 3 1 2 0 0 0 0 0 13 SSE 0 1 3 2 4 0 0 0 0 0 0 10 S 0 1 1 1 3 0 0 0 0 0 0 6 SSW 0 2 4 0 1 0 0 0 0 0 0 7 SW 0 2 2 2 10 1 0 0 0 0 0 17 WSW 0 3 2 2 0 1 0 0 0 0 0 8 W 0 4 5 0 0 0 0 0 0 0 0 9 WNW 0 4 1 0 0 0 0 0 0 0 0 5 NW 0 4 5 2 0 0 0 0 0 0 0 11 NNW 0 0 0 2 0 0 0 0 0 0 0 2 Tot 1 32 34 16 21 4 0 0 0 0 0 108 Hours of Calm ...... ....... 0 Hours of Variable Direction 0 Hours of Valid Data . . .. 108 Hours of Missing Data . . 3 Hours in Period ...... .. 2208 Page 103 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 0 3 4 9 9 23 37 27 6 3 121 NNE 0 2 2 3 8 3 12 16 14 8 9 77 NE 0 1 2 6 6 7 14 14 4 5 8 67 ENE 0 1 6 3 18 26 10 1 2 0 0 67 E 0 3 1 0 4 14 19 2 0 0 0 43 ESE 0 0 3 1 4 9 6 5 4 0 0 32 SE 0 1 1 1 16 26 22 26 19 0 1 113 SSE 0 2 3 3 17 31 38 27 35 13 2 171 S 0 1 3 5 26 45 43 30 85 38 39 315 SSW 0 0 2 3 28 37 38 33 47 28 23 239 SW 0 2 2 8 14 19 23 25 32 10 8 143 WSW 0 0 1 4 18 27 16 19 20 4 1 110 W 0 0 5 9 32 44 26 32 59 23 12 242 WNW 0 0 3 11 21 28 17 28 27 17 8 160 NW 0 2 3 7 12 28 30 28 21 16 3 150 NNW 0 3 2 2 8 26 24 38 30 14 9 156 Tot 0 18 42 70 241 379 361 361 426 182 126 2206 Hours of Calm ...... ....... 0 Hours of Variable Direction 0 Hours of Valid Data . . .. 2206 Hours of Missing Data . . 2 Hours in Period ...... .. 2208 Page 104 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 1 1 2 0 1 3 2 0 0 10 NNE 0 0 0 1 0 1 1 0 0 0 0 3 NE 0 0 0 1 0 0 0 0 0 0 0 1 ENE 0 0 1 0 1 3 2 0 0 0 0 7 E 0 0 0 0 0 2 0 0 0 0 0 2 ESE 0 0 0 0 0 1 0 0 0 0 0 1 SE 0 0 0 0 2 1 5 1 2 0 0 11 SSE 0 0 0 0 2 3 3 1 2 0 0 11 S 0 0 0 2 0 3 5 4 10 0 0 24 SSW 0 0 0 1 0 3 1 2 7 2 0 16 SW 0 2 1 0 0 2 1 4 3 2 0 15 WSW 0 0 0 1 7 7 4 3 6 0 0 28 W 0 0 0 0 7 4 2 1 3 3 5 25 WNW 0 0 0 0 1 4 5 4 4 8 0 26 NW 0 0 0 1 1 0 2 2 0 2 0 8 NNW 0 0 0 0 0 5 1 1 0 3 0 10 Tot 0 2 3 8 23 39 33 26 39 20 5 198 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 198 Hours of Missing Data . 2 Hours in Period ... ...... 2208 Page 105 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 1 0 1 3 NNE 0 0 0 0 0 0 1 0 0 0 0 1 NE 0 0 0 0 0 1 0 1 0 0 0 2 ENE 0 0 0 0 0 1 0 0 0 0 0 1 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 1 0 0 0 2 1 1 0 0 5 S 0 0 0 0 0 1 0 1 1 0 0 3 SSW 0 0 0 0 0 1 0 1 3 4 0 9 SW 0 0 0 0 0 0 0 1 0 2 0 3 WSW 0 0 0 0 1 0 1 0 0 0 0 2 W 0 0 0 1 0 0 0 1 1 0 1 4 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 1 1 0 0 0 0 2 Tot 0 0 1 1 1 5 5 7 6 3 36 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 36 Hours of Missing Data . 2 Hours in Period ... ...... 2208 Page 106 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 1 0 0 0 0 1 NNE 0 0 0 0 0 0 1 2 0 0 0 3 NE 0 0 0 0 0 0 0 1 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 1 0 1 1 0 0 1 0 0 4 S 0 0 0 0 0 0 0 0 0 0 0 0 SSW 0 0 0 0 0 0 0 0 0 1 0 1 SW 0 0 0 1 0 1 0 1 0 0 0 3 WSW 0 0 0 0 1 0 1 0 0 0 0 2 W 0 0 0 0 1 1 0 0 0 3 0 5 WNW 0 0 0 0 0 0 0 1 0 2 0 3 NW 0 0 0 0 0 0 2 0 2 0 0 4 NNW 0 0 0 0 1 0 0 0 1 1 0 3 Tot 0 0 1 4 3 5 5 4 7 0 30 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 30 Hours of Missing Data . 2 Hours in Period .......... 2208 Page 107 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 1 4 5 10 20 10 5 2 57 NNE 0 0 1 2 1 6 10 10 5 1 37 NE 0 0 0 2 0 2 9 9 4 4 5 35 ENE 0 1 2 0 1 7 4 0 2 0 0 17 E 0 2 0 0 1 4 14 1 0 0 0 22 ESE 0 0 0 0 0 2 1 0 0 0 0 3 SE 0 0 1 1 1 1 1 3 2 0 0 10 SSE 0 2 0 0 2 2 2 6 9 1 2 26 S 0 0 2 0 6 12 3 3 9 9 10 54 SSW 0 0 0 0 7 6 s 3 12 3 11 47 SW 0 0 0 3 4 0 1 4 8 2 5 27 WSW 0 0 0 0 2 2 0 3 3 0 0 10 W 0 0 1 0 2 6 5 5 14 8 5 46 WNW 0 0 0 3 6 7 3 6 12 s 7 49 NW 0 1 3 6 8 9 6 16 s 0 55 NNW 0 1 0 5 6 8 9 15 2 1 48 Tot 0 7 9 14 49 71 81 88 126 49 49 543 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data .. 543 Hours of Missing Data 2 Hours in Period ... ...... 2208 Page 108 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 1 2 2 4 10 12 14 1 0 46 NNE 0 0 1 1 4 1 2 3 4 3 8 27 NE 0 0 0 1 5 4 5 3 0 1 3 22 ENE 0 0 1 2 16 15 4 1 0 0 0 39 E 0 1 1 0 2 8 5 1 0 0 0 18 ESE 0 0 1 0 1 2 3 4 4 0 0 15 SE 0 1 0 0 1 6 6 11 5 0 1 31 SSE 0 0 0 1 3 9 16 12 16 12 0 69 S 0 1 0 2 12 23 25 18 60 29 29 199 SSW 0 0 2 2 10 13 16 19 23 18 12 115 SW 0 0 0 3 4 6 10 5 17 4 3 52 WSW 0 0 0 1 2 5 2 9 6 4 0 29 W 0 0 3 4 8 27 14 22 41 9 1 129 WNW 0 0 3 2 5 6 8 16 10 2 0 52 NW 0 1 0 2 1 16 12 18 3 9 3 65 NNW 0 1 0 0 1 8 14 28 14 8 8 82 Tot 0 5 13 23 77 153 152 182 217 100 68 990 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 990 Hours of Missing Data . 2 Hours in Period ... ...... 2208 Page 109 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 0 0 0 1 0 1 1 0 0 0 3 NNE 0 0 0 0 2 0 1 1 0 0 0 4 NE 0 1 1 2 1 0 0 0 0 0 0 5 ENE 0 0 2 0 0 0 0 0 0 0 0 2 E 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 2 1 3 3 2 1 0 0 0 12 SE 0 0 0 0 7 12 7 10 8 0 0 44 SSE 0 0 0 1 3 11 13 7 6 0 0 41 S 0 0 0 1 5 6 8 4 5 0 0 29 SSW 0 0 0 0 9 14 15 7 2 0 0 47 SW 0 0 1 1 4 4 11 5 4 0 0 30 WSW 0 0 1 1 4 12 6 3 0 1 29 1

W 0 0 0 3 9 5 4 3 0 0 0 24 WNW 0 0 0 3 4 6 0 1 1 0 0 15 NW 0 0 0 1 2 2 3 2 0 0 0 10 NNW 0 1 0 1 1 3 0 0 0 0 0 6 Tot 0 2 7 15 55 78 71 43 29 0 1 301 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 301 Hours of Missing Data . 2 Hours in Period .......... 2208 Page 110 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 0 0 0 0 0 0 0 0 1 NNE 0 2 0 0 0 0 0 0 0 0 0 2 NE 0 0 1 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 0 1 0 0 0 0 0 0 1 ESE 0 0 0 0 0 1 0 0 0 0 0 1 SE 0 0 0 0 5 6 3 1 2 0 0 17 SSE 0 0 1 1 6 5 2 0 0 0 0 15 S 0 0 1 0 3 0 2 0 0 0 0 6 SSW 0 0 0 0 2 0 1 1 0 0 0 4 SW 0 0 0 0 2 6 0 5 0 0 0 13 WSW 0 0 0 1 1 1 2 3 2 0 0 10 W 0 0 1 1 5 1 1 0 0 0 0 9 WNW 0 0 0 3 5 5 1 0 0 0 0 14 NW 0 0 2 0 2 2 2 0 0 0 0 8 NNW 0 0 1 1 0 3 0 0 0 0 0 5 Tot 0 2 8 8 32 30 14 10 4 0 0 108 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 108 Hours of Missing Data . 2 Hours in Period ... ...... 2208 Page III of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 <0.5.0 1.0 1.5 2.0 3.0 4.0 5.0 6.0 8.0 10.0 Total N 0 2 1 2 7 11 10 20 50 16 12 131 NNE 0 2 1 2 2 4 11 12 26 8 18 86 NE 0 0 2 3 2 3 10 22 9 6 7 64 ENE 0 0 2 7 8 29 26 2 2 0 0 76 E 0 1 2 1 2 3 13 5 7 2 0 36 ESE 0 1 2 0 2 4 3 4 5 5 0 26 SE 0 0 1 1 3 1 24 9 2 5 13 59 SSE 0 1 4 1 10 12 21 25 67 18 11 170 S 0 3 3 3 7 21 26 36 82 74 97 352 SSW 0 0 1 1 10 15 19 33 77 28 38 222 SW 0 2 0 4 14 14 17 31 48 18 12 160 WSW 0 0 1 1 13 15 22 13 31 9 3 108 W 0 0 4 6 12 29 23 29 58 62 25 248 WNW 0 0 5 0 18 12 22 17 36 26 19 155 NW 0 2 3 3 14 19 16 36 36 22 6 157 NNW 0 3 2 3 9 12 12 27 52 22 13 155 Tot 0 17 34 38 133 204 256 325 610 325 263 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 112 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 1 0 1 1 0 0 3 NNE 0 0 0 1 0 0 2 0 1 0 0 4 NE 0 0 0 0 0 0 1 0 0 0 0 1 ENE 0 0 0 0 1 3 1 0 0 0 0 5 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 3 0 0 5 SSE 0 0 0 0 1 2 2 2 0 0 0 7 S 0 0 0 0 10 0 0 2 4 1 0 7 SSW 0 0 0 0 0 0 1 0 1 0 0 2 SW 0 0 0 0 0 2 0 2 1 0 0 5 WSW 0 0 0 0 10 1 2 0 1 1 0 6 W 0 0 0 1 2 2 0 0 1 3 10 WNW 0 0 1 0 0 2 2 2 2 1 4 14 NW 0 0 0 0 0 0 1 3 0 0 0 4 NNW 0 0 2 0 0 2 1 0 0 0 0 5 Tot 0 0 3 2 5 16 15 12 14 4 7 78 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 78 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 113 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 2 0 0 0 2 NNE 0 0 0 0 0 0 0 0 1 0 0 1 NE 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 1 0 1 1 0 0 0 0 3 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 1 0 0 0 1 SSE 0 0 0 0 0 2 2 2 3 0 0 9 S 0 0 0 0 0 2 1 3 8 1 1 16 SSW 0 0 0 0 0 2 1 2 2 4 3 14 SW 0 0 0 0 0 0 0 1 1 1 1 4 WSW 0 0 0 1 1 3 2 1 2 1 0 11 W 0 0 0 0 0 1 1 2 0 4 3 11 WNW 0 0 0 0 2 2 1 0 0 2 1 8 NW 0 0 0 1 0 0 0 1 0 2 0 4 NNW 0 0 0 1 0 1 1 0 0 2 0 5 Tot 0 0 0 3 14 10 15 17 17 9 89 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 89 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 114 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 0 1 0 0 1 NNE 0 0 0 0 0 0 1 0 1 0 0 2 NE 0 0 0 0 0 1 0 0 0 0 0 1 ENE 0 0 0 0 0 1 0 0 0 0 0 1 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 1 0 0 2 0 0 4 S 0 0 0 1 0 1 2 1 2 0 1 8 SSW 0 0 0 0 0 1 0 0 3 1 1 6 SW 0 1 0 1 0 0 0 1 2 0 0 S WSW 0 0 0 0 3 0 1 2 1 1 0 8 W 0 0 0 1 1 3 0 0 2 1 1 9 WNW 0 0 0 0 2 0 2 0 1 4 2 11 NW 0 0 0 0 0 0 1 0 1 1 0 3 NNW 0 0 0 0 0 0 0 0 1 0 0 1 Tot 0 1 0 3 7 8 8 4 17 8 5 61 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 61 Hours of Missing Data . 3 Hours in Period .......... 2208 Page 115 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 5 7 6 12 38 11 12 93 NNE 0 1 1 1 2 2 3 12 21 5 18 66 NE 0 0 0 2 0 1 5 19 8 6 7 48 ENE 0 0 0 2 6 15 21 2 1 0 0 47 E 0 0 1 0 1 2 11 5 2 0 0 22 ESE 0 1 0 0 0 1 0 2 0 0 0 4 SE 0 0 0 0 1 0 0 3 3 1 2 10 SSE 0 0 2 0 5 1 7 6 16 8 4 49 S 0 3 2 1 5 13 10 7 14 22 52 129 SSW 0 0 0 0 4 6 6 8 20 11 25 80 SW 0 0 0 1 7 5 1 5 13 8 7 47 WSW 0 0 1 0 3 3 5 2 7 2 0 23 W 0 0 1 3 3 8 6 7 15 21 8 72 WNW 0 0 0 0 7 3 6 4 15 12 12 59 NW 0 1 1 1 7 11 6 14 14 14 5 74 NNW 0 2 0 2 7 7 5 13 33 16 13 98 Tot 0 8 10 14 63 85 98 121 220 137 165 921 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 921 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 116 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 Stability Class E Slightly Stable based on Lapse Rate Elevations:: Winds 300ft Stabi lity 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 0 1 1 1 2 3 8 5 0 22 NNE 0 0 0 0 0 1 3 0 0 2 0 6 NE 0 0 2 1 2 1 3 2 1 0 0 12 ENE 0 0 1 3 0 8 3 0 1 0 0 16 E 0 0 1 0 0 1 1 0 5 2 0 10 ESE 0 0 1 0 1 1 0 1 5 4 0 13 SE 0 0 1 1 1 0 2 4 12 7 0 28 SSE 0 1 0 0 1 0 3 11 28 8 7 59 S 0 0 1 0 1 2 4 18 38 46 42 152 SSW 0 0 1 1 3 6 10 14 37 10 7 89 SW 0 0 0 1 7 2 11 7 15 9 4 56 WSW 0 0 0 0 2 5 8 1 7 4 3 30 W 0 0 1 1 6 13 13 13 37 34 10 128 WNW 0 0 0 0 4 4 8 9 17 6 0 48 NW 0 1 1 1 5 5 5 14 20 4 1 57 NNW 0 0 0 0 2 1 4 11 13 4 0 35 Tot 0 3 10 10 36 51 80 108 244 145 74 761 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 761 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 117 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 1 1 2 2 2 0 0 8 NNE 0 0 0 0 0 0 2 0 2 1 0 5 NE 0 0 0 0 0 0 1 1 0 0 0 2 ENE 0 0 1 1 1 1 0 0 0 0 0 4 E 0 1 0 1 1 0 0 0 0 0 0 3 ESE 0 0 1 0 1 1 3 1 0 1 0 8 SE 0 0 0 0 0 0 1 3 6 1 0 SSE 0 0 2 1 2 5 5 2 14 2 0 33 S 0 0 0 1 0 1 6 3 15 4 1 31 SSW 0 0 0 0 3 0 1 8 11 1 2 26 SW 0 1 0 1 0 2 3 10 14 0 0 31 WSW 0 0 0 0 3 3 4 3 13 0 0 26 W 0 0 0 0 0 1 1 6 4 1 0 13 WNW 0 0 1 0 1 1 3 2 1 1 0 10 NW 0 0 0 0 1 3 2 3 0 0 0 9 NNW 0 1 0 0 0 0 0 1 0 0 0 2 Tot 0 3 5 5 14 19 34 45 82 12 3 222 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 222 Hours of Missing Data . 3 Hours in Period .......... 2208 Page 118 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Oct - Dec for years 2011 - 2011 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 1 0 0 0 1 0 0 0 0 0 2 NNE 0 1 0 0 0 1 0 0 0 0 0 2 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 1 0 0 0 0 0 1 SE 0 0 0 0 0 0 2 2 0 0 0 4 SSE 0 0 0 0 0 1 2 2 4 0 0 9 S 0 0 0 0 1 2 3 2 1 0 0 9 SSW 0 0 0 0 0 0 0 1 3 1 0 5 SW 0 0 0 0 0 3 2 5 2 0 0 12 WSW 0 0 0 0 0 0 0 4 0 0 0 4 W 0 0 2 0 1 1 0 1 0 0 0 5 WNW 0 0 3 0 2 0 0 0 0 0 0 5 NW 0 0 1 0 1 0 1 1 1 1 0 6 NNW 0 0 0 0 0 1 1 2 5 0 0 9 Tot 0 2 6 0 5 11 11 20 16 2 0 73 Hours of Calm ... ........ 0 Hours of Variable Direction 0 Hours of Valid Data . ... 73 Hours of Missing Data . 3 Hours in Period ... ...... 2208 Page 119 of 121

DRESDEN NUCLEAR POWER STATION 2010 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2010 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2010 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES DOCKET NUMBERS: 50-010/50-237/50-249 CORRECTED PAGE of 2010 report Units 1St 2 nd 3 rd 4 th Est. Total Units Quarter Quarter Quarter Quarter Error, %

A. Fission & activation gases

1. Total release Ci 1.44E+01 1.78E+01 1.1IE+01 7.38E+00 1.31E+01
2. Average release rate for period uCi/sec 1.86E+00 2.26E+00 1.39E+00 9.28E-01
3. Percent of Technical specification limit  %* * *
  • B. lodines
1. Total iodine-131 Ci 2.06E-04 2.54E-04 3.12E-04 2.OOE-04 2.60E+01
2. Average release rate for period (1-131) tCi/sec 2.65E-05 3.23E-05 3.93E-05 2.51E-05
3. Percent of technical specification limit %7* * *
  • C. Particulates
1. Particulates with half-lives > 8 days Ci 2.42E-04 2.57E-04 4.66E-04 4.70E-04 2.94E+0l
2. Average release rate for period gCi/sec 3.11E-05 3.27E-05 5.86E-05 5.92E-05
3. Percent of technical specification limit  %* * * *
4. Gross alpha radioactivity Ci <LLD <LLD <LLD <LLD D. Tritium
1. Total release Ci 2.79E+00 2.95E+00 3.36E+00 4.26E+00 7.56E+00
2. Average release rate for period tCi/sec 3.59E-01 3.75E-01 4.23E-01 5.35E-01
3. Percent of technical specification Limit  %* * *
1. Total release Ci 7.56E+00 7.56E+00 5.04E+00 7.56E+00 N/A
2. Average release rate for period RtCi/secI 9.72E-01 I 9.62E-01 I 6.34E-01 9.51E-01
  • Applicable limits have been removed from the Technical Specifications. The comparison to ODCM limits is contained in the Radiological Impact on Man section of this report. Total airborne release data are provided which include fission and activation gases, iodines, particulates, and tritium.

Page 5 of 123 (2010 Report)

Page 120 of 121

DRESDEN NUCLEAR POWER STATION 201.0 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2010 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2010 UNITS 2/3 MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 GROUND LEVEL RELEASES CORRECTED PAGE OF 2010 REPORT SEMI-ELEVATED RELEASES xx ELEVATED RELEASES CONTINUOUS MODE Nuclides Released I Unit Il Quarter 2 id Quarter 3 rd Quarter 4h Quarter TOTAL

1. Fission and Activation Gases Ar-41 Ci 9.40E-01 5.84E-01 1.14E+00 1.40E+00 4.06E+00 Kr-85 Ci <LLD <LLD <LLD <LLD <LLD Kr-85m Ci 4.76E-01 2.59E-01 1.33E-01 1.90E-01 1.06E+00 Kr-87 Ci 2.65E-01 2.65E-01 2.50E-01 1.63E-01 9.44E-01 Kr-88 Ci 2.82E-01 1.90E-O1 1.47E-01 1.35E-01 7.54E-01 Xe-133 Ci 1.18E+00 7.49E+00 4.74E-01 4.21E-01 9.56E+00 Xe-133m Ci <LLD <LLD <LLD <LLD <LLD Xe-135 Ci 6.79E-01 8.37E-01 1.03E+00 5.77E-01 3.13E+00 Xe-135m Ci 1.69E+00 1.61E+00 1.54E+00 8.56E-01 5.70E+00 Xe-138 Ci 8.93E+00 6.56E+00 6.34E+00 3.63E+00 2.55E+O1 Total for period Ci 1.44E+01 1.78E+01 1.I1E+01 7.37E+00 5.07E+01
2. Iodines 1-131 Ci 2.06E-04 2.54E-04 3.12E-04 1.96E-04 9.68E-04 1-133 Ci 8.58E-04 1.17E-03 1.62E-03 6.88E-04 4.34E-03 1-135 Ci <LLD 2.17E-04 5.11 E-04 2.34E-04 9.62E-04 Total for period Ci 1.06E-03 1.64E-03 2.45E-03 1.12E-03 6.27E-03
3. Particulates Fe-55 Ci <LLD <LLD <LLD <LLD <LLD Sr-89 Ci 5.02E-05 2.94E-06 4.26E-05 2.24E-06 9.80E-05 Sr-90 Ci <LLD <LLD <LLD <LLD <LLD Cr-51 Ci <LLD <LLD <LLD <LLD <LLD Mn-54 Ci 2.34E-05 1.71E-05 4.65E-05 4.83E-05 1.35E-04 Co-58 Ci <LLD 1.60E-05 <LLD 2.11E-06 1.81E-05 Fe-59 Ci <LLD <LLD <LLD <LLD <LLD Co-60 Ci 4.93E-05 6.75E-05 7.96E-05 1.19E-04 3.15E-04 Zn-65 Ci <LLD <LLD 1.34E-05 1.47E-05 2.81E-05 Mo-99 Ci <LLD <LLD <LLD <LLD <LLD Ag- 110m Ci <LLD <LLD 5.16E-06 <LLD 5.16E-06 Cs- 134 Ci <LLD <LLD <LLD <LLD <LLD Cs- 137 Ci <LLD <LLD <LLD <LLD <LLD Ba- 140 Ci 9.44E-05 1.47E-04 2.36E-04 7.9 1E-05 5.56E-04 Ce-141 Ci <LLD <LLD <LLD <LLD <LLD Ce-144 Ci <LLD <LLD <LLD <LLD <LLD Total for period Ci 2.17E-04 2.50E-04 4.23E-04 2.65E-04 1.16E-03
4. Tritium Total for Ci 2.06E+00 2.23E+00 2.92E+00 3.50E+00 1.07E+01 period
5. Carbon-14 Total for Ci 7.56E+00 7.56E+00 5.04E+00 7.56E+00 2.77E+01 period II Page 11 of 123 (2010 Report)

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