Text

Annual Radioactive Effluent Release Report
	ML12121A582
Person / Time
Site:	Dresden
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

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:

2.

Total activity released:

b.

Gaseous

1. Number of releases:

2.

Total activity released:

0 0.OOE+00 Ci 0

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 U its is 2

n3rd4t Est. Total Units Quarter Quarter 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 2.94E+O1 2.

3.

Average release rate for period Percent of ODCM dose limit LtCi/sec I O.OOE+00 O.OOE+00 O.OOE+O0 O.OOE+00 i

i 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 Kr-87 Kr-88 Xe-133 Xe-133m Xe-135 Xe-138

2.

IODINES 1-131 1-133

3.

PARTICULATES Sr-89 Sr-90 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Mo-99 Cs-134 Cs-137 Ce-141 Ce-144

ýtCi/cc 1.00E-04 1.00E-04 1.00E-04 1.00E-04 1.00E-04 1.00E-04

,tCi/cc 1.00E-12 1.00E-10 ltCi/cc 1.00E-1I 1.00E-11 1.OOE-11 I.OOE-1I 1.OOE-11 1.00E-l11 I.OOE-II 1.00E-11 1.OOE-11 1.OOE-1I 1.OOE-11 1.00E-11 1.00E-11 ltCi/cc 1.00E-06 1.OOE-11

4.

OTHER H-3 Gross Alpha 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"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*

2. Iodines 1-131 Ci 1.54E-06L

1.19E-06L *

<LLD

<LLD 2.73E-06"*

1-133 Ci

<LLD

<LLD 1-135 Ci

<LLD

<LLD Total for period Ci 1.54E-06**

1.19E-06**

<LLD

<LLD 2.73E-06**

3. Particulates Fe-55 Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Cr-51 Ci

<LLD

<LLD Mn-54 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD Fe-59 Ci

<LLD

<LLD Co-60 Ci 5.04E-07 1.1OE-06 6.37E-07

<LLD 2.24E-06 Zn-65 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Ag-110m Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD 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*

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 xx GASEOUS EFFLUENTS DOCKET NUMBER: 50-010 ELEVATED RELEASES BATCH MODE Nuclides Released I Unit 1St Quarter 2nd 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*

2. lodines 1-131 Ci 1-133 Ci 1-135 Ci Total for period Ci 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*

4. Tritium Total for period I Ci 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"1 Quarter 2 "d Quarter 3 rd Quarter 4"' Quarter TOTAL

1. Fission and Activation Gases Ar-41 Ci

<LLD

<LLD Kr-85 Ci

<LLD

<LLD Kr-85m Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD Xe-133m Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD 6.12E-06 6.12E-06 Xe-135m Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total for period Ci

<LLD

2. Jodines 1-131 Ci 7.76E-06 4.64E-06

<LLD 6.84E-07 1.31E-05 1-133 Ci

<LLD

<LLD 1-135 Ci

<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 Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Cr-51 Ci

<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 Fe-59 Ci

<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 Mo-99 Ci

<LLD

<LLD Ag-110m Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD 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 2nd Quarter 3rd 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*

2. lodines 1-131 Ci 1-133 Ci 1-135 Ci Total for period Ci 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*

4. Tritium Total for period Ci 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 2nd Quarter 3rd Quarter 4th 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 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 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 Sr-89 Ci 4.76E-05 5.46E-05 5.37E-05 9.76E-05 2.54E-04 Sr-90 Ci

<LLD

<LLD Cr-51 Ci

<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 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 Ag-110m Ci

<LLD

<LLD 2.39E-06

<LLD 2.39E-06 Cs-134 Ci

<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 Ce-144 Ci

<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

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*

2. lodines 1-131 Ci 1-133 Ci 1-135 Ci Total for period Ci 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*

4. Tritium Total for period Ci None*

None*

5. Gross Alpha Total for period Ci None*

None*

6. Carbon-14 Total for period Ci 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 xx GASEOUS EFFLUENTS DOCKET NUMBERS: 50-010 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*

2. lodines 1-1311 Ci 1.93E-06**

1.15E-06**

<LLD

<LLD 3.08E-06**

1-133 Ci

<LLD

<LLD 1-135 Ci

<LLD

<LLD Total for period Ci 1.93E-06**

1.15E-06**

<LLD

<LLD 3.08E-06**

3. Particulates Fe-55 Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Cr-51 Ci

<LLD

<LLD Mn-54 Ci

<LLD

<LLD Co-5 8 Ci

<LLD

<LLD Fe-59 Ci

<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 Mo-99 Ci

<LLD

<LLD Ag-110m Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD 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*

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*

2. Iodines 1-131 Ci 1-133 Ci 1-135 Ci Total for period Ci 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*

4. Tritium Total for period Ci 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 Ist 2nd 3 rd 4th Est. Total Units Quarter Quarter Quarter 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

3.

Percent of applicable dose limit Organ 1.00E-09 N/A 2.07E-10 4.16E-07 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 3.82E-04 2.03E+01

2.

Average diluted concentration during period Ci/ml

<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 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*

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*

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 1st Quarter 2nd Quarter 3rd 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*

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*

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 Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD 1-131 Ci

<LLD

<LLD 1-133 Ci

<LLD

<LLD 1-135 Ci

<LLD

<LLD Cr-51 Ci

<LLD

<LLD Mn-54 Ci 1.55E-06

<LLD

<LLD 7.03E-06 8.57E-06 Co-58 Ci

<LLD

<LLD Fe-59 Ci

<LLD

<LLD Co-60 Ci 1.68E-06

<LLD

<LLD 4.17E-05 4.34E-05 Zn-65 Ci 4.OOE-06

<LLD

<LLD 4.OOE-06 Zr-95 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ag-110m Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Total Ci 7.22E-06

<LLD

<LLD 4.87E-05 5.60E-05 H-3 Ci

<LLD

<LLD 5.19E-03 5.19E-03 Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD Total Ci

<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 d Quarter 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*

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*

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 O.OOE+00 Ci O.OE+002.50E+01

d.

Other (describe) - Contaminated Oil, Combined i3 8.56E+01 2.50E+01 PcaePmImer 62.50E+01 Packages, Pump Impeller Ci 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 37 14 6

8 Mode of Transportation Motor freight (exclusive use only)

Motor freight (exclusive use only)

Rail freight Destination Energy Solutions - Bear Creek Road, Oak Ridge, TN Energy Solutions - Clive, UT Energy Solutions - Gallaher Road, Kingston, TN Energy Solutions - Clive, UT B.

IRRADIATED FUEL SHIPMENTS (Disposition)

Number of Shipments None Mode of Transportation (NA)

Destination (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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.S0 1.0 1.5 0

0 0

1 0

0 0

0 1

3 2

2 1

10 1

6 3

2 1

0 2

4 3

1 7

5 3

6 7

1 6

7 12 9

5 10 6

5 7

Speed 1.6-2.0 9

4 11 6

6 6

3 13 14 17 6

16 14 12 9

11 Range (m/s) 2.1-3.1-3.0 4.0 23 17 28 11 52 51 46 51 32 47 22 16 8

11 17 24 40 45 31 35 34 22 27 19 36 35 34 56 47 43 26 30 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 Total

>10.00 13 14 19 17 35 32 12 10 25 25 21 10 28 42 32 21 14 2

12 2

9 15 18 10 13 15 13 7

19 23 43 21 27 8

11 1

5 2

13 15 24 16 8

11 22 14 17 12 1

2 3

0 0

0 4

3 1

1 10 1

1 5

32 0

3 2

0 0

1 106 82 168 128 141 101 66 96 178 158 116 97 174 190 201 137 Tot 1

32 97 157 503 513 356 236 206 6

2139 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period..........

2 1

2142 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

0 2

0 1

2 1

0 0

0 1

2 0

1 0

0 Range (m/s) 2.1-3.0 6

5 11 8

4 1

0 0

1 0

2 11 1

3 3

3.1 4.0 4.1-5.0 5.1-6.1-8.1-6.0 8.0 10.0 4

0 11 5

6 0

0 0

0 1

2 3

5 1

2 1

5 3

5 5

1 01 1

1 3

3 4

1 0

0 0

51 1

0 2

0 0

0 1

3 0

3 6

4 0

0 0

0 1

0 2

0 0

2 0

2 5

4 3

1 0

0 0

1 0

0 1

>10. 00 0

0 0

0 Total 14 6

33 19 18 6

5 0

2 3

6 12 11 17 18 9

Tot Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period..........

1 10 47 38 36 26 20 0

0 179 18 2160 0

179 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 1

0 0

2 0

0 1

0 0

1 0

0 0

0 Range (m/s) 2.1-3.1-3.0 4.0 1

1 1

0 3

1 1

1 0

0 0

1 0

0 0

1 0

0 0

0 2

1 1

4 1

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 1

0 1

1 21 0

0 0

0 00 2

4 1

0 2

0 0

0 3

2 1

0 1

0 0

0 01 1

3 0

0 0

0 3

0 9

0 0

1 0

2 0

0 0

>10.00 0

0 0

0 Total 6

1 6

3 2

2 01 1

4 5

1 7

10 10 1

Tot 0

2 10 10 13 11 3

0 60 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 1

61 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

0 1

2 0

1 0

0 0

1 0

0 0

0 1

0 0

Range (m/s) 2.1-3.0 0

2 1

1 0

0 1

1 0

0 1

2 3.1-4.0 1

2 0

1 3

1 0

0 1

2 01 1

1 2

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 1

0 0

0 1

0 21 1

0 0

0 6

0 0

1 0

0 0

1 0

0 0

1 13 1

0 0

1 0

0 1

2 0

0 0

2 0

3 0

0 0

0 1

0 0

1 0

0 0

2

>10. 00 0

0 0

0 Total 3

4 5

2 4

2 1

2 5

3 3

5 6

2 9

4 Tot 0

2 5

11 16 8

10 0

60 Hours of Calm...........

Hours of Variable Direction Hours Hours Hours of of in Valid Data.

Missing Data.

Period.........

0 0

60 18 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 Elevations::

Winds 35ft based on Lapse Rate Stability 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 0

0 2

0 0

2 2

0 0

2 1

0 1

2 0

0 0

21 1

2 3

2 4

3 1

4 2

1 2

0 3

6 1

2 6

2 4

0 4

Range (m/s) 2.1-3.1-3.0 4.0 5

6 9

3 17 27 15 35 10 21 4

5 1

4 9

16 22 27 11 11 10 8

15 8

12 17 9

23 16 18 5

22 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 9

8 9

13 24 12 5

8 12 11 13 4

9 20 22 18

>10. 00 12 2

6 1

8 4

11 6

2 11 7

1 3

12 27 16 26 8

10 1

3 0

10 9

8 5

3 6

10 8

8 9

0 0

3 0

0 0

1 2

0 1

4 0

1 5

0 0

1 0

0 0

0 1

Total 61 33 78 67 68 29 31 51 80 55 44 42 59 81 96 84 Tot 1

6 21 41 170 251 197 129 124 17 2

959 Hours Hours Hours Hours Hours of of of of in Calm...

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

959 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0 Range (m/s) 2.1-3.1 3.0 4.0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0

<0.50 0

0 0

0 1

2 2

2 1

0 0

1 3

31 1

0 0

2 0

1 4

4 3

5 4

1 4

4 5

3 2

51 1

1 1

3 4

2 4

4 1

7 4

11 2

3 7

6 7

6 11 20 21 18 13 7

7 10 11 8

5 21 21 23 14 5

6 12 9

17 8

6 8

14 20 10 6

15 28 14 7

1 5

3 0

4 14 6

2 11 13 4

2 13 14 8

3 0

0 0

11 5

4 10 4

2 3

12 5

6 0

0 0

0 2

1 4

13 6

4 3

5 2

0 2

1 2

0 0

3 0

0 0

3 0

0 0

9

>10. 00 0

3 1

0 0

0 Total 21 36 46 37 49 56 27 37 72 73 34 25 81 77 61 33 Tot 0

19 48 72 221 185 103 62 42 4

765 Hours Hours Hours Hours Hours of of of of in Calm...

Variable Direction Valid Data.

Missing Data.

Period.........

1 0

766 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 0

0 0

0 1

0 0

0 1

0 0

1 0

0 0

0 3

0 1

0 0

0 1

0 2

2 4

1 1

3 12 1

Speed 1.6-2.0 1

0 0

0 00 1

3 4

5 1

3 5

1 2

1 Range (m/s) 2.1-3.0 0

0 0

3 0

0 6

9 12 4

2 1

3 1

0 0

0 1

0 3

1 4

3 0

0 0

0 1

0 0

3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 0

0 0

0 1

0 0

0 1

0 0

0

>10. 00 0

0 0

0 Total 1

2 0

0 0

6 2

5 15 19 21 11 10 3

7 6

Tot Hours of Calm...........

Hours of Variable Direction 19 27 41 13 1

0 109 18 2160 1

0 108 Hours Hours Hours of of in Valid Data.

Missing Data Period.........

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 0

1 0

0 0

01 1

2 0

0 0

4 0

0 0

Range (m/s) 2.1-3.0 0

0 0

0 1

1 0

0 0

0 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 0

0 0

>10. 00 0

0 0

Total 0

0 0

0 3

1 3

1 0

0 0

0 8

Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 0

8 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

0 2

1 0

0 2

0 1

10 1

2 0

4 6

43 1

0 2

01 1

7 2

3 1

6 1

8 8

0 6

2 2

0 4

3 5

6 5

2 6

Range (m/s) 2.1-3.1-3.0 4.0 11 18 13 18 27 46 21 40 12 19 6

11 4

6 7

26 22 29 17 30 22 21 23 15 9

30 18 31 15 25 17 25 11 45 48 26 15 12 22 37 31 15 21 39 38 40 26 437 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 11 13 22 25 33 23 12 9

22 30 27 13 29 33 30 19 351 37 10 12 8

17 29 29 15 28 31 27 8

38 60 57 21 8

6 6

0 s

4 7

10 12 9

4 7

28 7

12 3

>10. 00 3

5 4

0 0

0 6

4 4

8 14 1

4 3

Total 108 77 174 156 118 98 73 91 160 156 125 102 200 196 190 121 Tot Hours of Hours of Hours of Hours of Hours in 0

11 37 64 244 390 427 128 56 2145 Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

2145 15 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind Sp 0.5-1.1-1.0 1.5 eed Range (m/s) 1.6-2.1-2.0 3.0

<0.50 0

0 0

1 0

0 0

1 0

1 2

0 0

4 4

5 7

2 0

0 0

0 1

0 4

0 1

3 3

3.1-4.0 3

4 12 3

2 0

0 0

1 0

2 0

1 5

3 3

4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 3

1 6

2 7

1 0

0 1

2 3

10 1

1 0

6 2

3 4

0 0

1 0

2 0

4 11 0

0 0

4 2

1 2

2 01 1

1 2

3 3

s s

0 0

1 0

0 0

0 1

0 0

6 0

3 0

>10. 00 0

0 0

2 2

0 0

0 Total 12 9

34 18 16 7

2 0

4 3

6 10 20 11 15 12 Tot Hours of Hours of Hours of Hours of Hours in 0

4 34 39 29 25 32 11 4

179 Calm...........

Variable Direction Valid Data Missing Data Period..........

0 0

179 15 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 Range (m/s) 2.1-3.1 3.0 4.0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

2 0

0 0

1 0

0 0

0 2

1 1

0 0

00 0

1 1

0 3

0 0

1 3

0 8

1 0

1 1

0 1

0 0

01 00 1

1 2

0 0

1 2

1 0

0 0

0 1

4 0

0 2

0 0

1 0

3 1

0 3

2 2

1 0

0 0

0 11 0

0 00 2

0 4

>10. 00 0

0 0

1 0

0 2

0 0

0 Total 4

2 6

3 2

2 01 1

6 2

1 10 9

10 2

Tot 0

2 9

9 10 15 3

61 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period..........

0 0

61 15 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

00 1

0 0

00 1

0 0

0 1

0 0

1 0

0 0

2 5

Range (m/s) 2.1-3.1-3.0 4.0 0

2 0

0 3

0 0

3 0

0 0

2 0

0 0

1 0

2 0

1 1

0 1

0 0

2 0

2 1

2 0

0 1

0 0

0 1

0 11 1

0 0

0 1

0 0

0 1

0 3

0 1

0 0

0 2

0 0

1 3

0 0

0 1

2 4

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

0 1

0 0

0 2

0 5

>10. 00 0

0 0

1 0

0 1

0 0

0 Total 4

2 6

3 2

2 1

2 6

2 5

3 6

3 9

4 Tot 1

5 15 8

6 13 2

60 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period..........

0 0

60 15 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 Elevations::

Winds 150ft based on Lapse Rate Stability 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

1 0

01 1

0 5

1 0

11 0

0 0

0 00 2

0 2

1 3

1 2

0 0

3 0

1 0

2 2

2 5

4 2

3 Range (m/s) 2.1-3.1-3.0 4.0 2

3 4

8 6

14 8

15 4

5 2

3 1

1 5

18 17 15 7

12 6

6 12 9

2 12 6

10 5

7 7

9 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 1

3 28 29 7

5 4

15 20 8

6 8

15 19 16 13 197 9

7 12 18 20 7

7 7

8 12 5

8 6

9 18 14 35 6

6 5

15 7

15 s

8 12 10 0

12 31 38 15 220 8

6 6

0 3

1 7

3 4

3 0

4 10 7

5 1

>10. 00 0

1 4

0 0

01 1

1 5

4 1

4 3

Total 62 36 79 75 55 30 35 54 74 57 37 48 68 88 98 66 Tot 9

30 94 147 167 68 25 962 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

962 15 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 Elevations::

Winds 150ft Stabi:

based on Lapse Rate lity 150ft Wind '

Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 1

0 0

0 1

0 0

0 1

0 0

1 0

0 1

0 2

41 2

1 01 01 0

2 1

0 0

4 5

0 21 1

0 2

1 2

0 1

Range (m/s) 2.1-3.0 4

3 12 5

6 4

3 2

4 8

10 2

4 5

6 5

3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 8

6 17 19 12 6

5 7

6 12 9

0 13 13 9

10 55 10 16 11 5

8 7

14 13 3

7 17 16 18 11 1

6 3

4 8

10 4

2 10 16 6

3 17 19 11 5

0 4

0 1

1 20 12 8

15 14 10 4

19 22 8

0 0

3 0

7 7

4 4

3 10 0

0 2

>10. 00 3

4 0

0 0

0 5

1 2

1 5

0 0

0 Total 23 28 48 54 40 52 34 34 63 70 46 23 87 77 53 34 Tot 0

5 16 20 83 152 166 125 138 40 21 766 Hours of Calm...

Hours of Variable Direction Hours Hours Hours of of in Valid Data.

Missing Data Period.........

0 0

766 15 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 0

1 0

0 1

2 2

0 0

0 1

0 0

0 01 1

0 8

1 0

0 1

0 0

1 0

0 0

Range (m/s) 2.1-3.1-3.0 4.0 1

1 0

0 0

0 1

5 1

5 4

3 1

4 2

4 5

2 0

1 1

1 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

3 0

0 2

9 4

3 2

0 3

1 0

0 0

0 01 0

2 2

9 2

0 0

0 01 1

5 2

0 0

9 0

0 0

0

>10. 00 0

0 0

0 1

0 0

0 Total 3

0 1

3 3

5 1

0 12 18 26 12 9

8 5

3 Tot 4

16 26 27 17 0

1 109 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data Missing Data Period..........

0 0

109 15 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 Elevations::

Winds 150ft Stabil based on Lapse Rate ity 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 Range (m/s) 2.1-3.1-3.0 4.0 0

0 0

0 1

1 2

2 0

0 0

0 3

3 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

1 0

0 0

0 1

0 0

1 0

0 0

1 0

0 0

0

>10. 00 0

0 0

Total 0

0 0

0 3

5 0

0 0

0 8

Hours of Calm...........

Hours of Variable Direction Hours of Hours of Hours in Valid Data.

Missing Data Period..........

0 0

8 15 2160 Page 39 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution Site:: Dresden Generating Station Period:: Months Jan

- Mar for years 2011 -

2011 All Stabilities DOCKET NUMBERS: 50-010/50-237/50-249 Elevations::

Winds 300ft Stability 300ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 2

0 0

1 0

0 1

1 0

10 2

1 1

21 1

2 0

4 0

1 0

0 0

3 1

2 2

1 4

3 5

8 5

2 1

0 0

2 1

5 3

5 2

4 Range (m/s) 2.1-3.1-3.0 4.0 4

11 6

12 18 31 26 34 13 16 3

7 3

5 5

4 5

24 15 9

9 21 14 15 10 13 11 12 7

21 17 10 4.1-5.0 8

8 30 66 21 7

5 13 29 24 17 15 16 16 34 21 5.1-6.1-8.1-6.0 8.0 10.0 21 9

25 32 31 15 17 11 27 25 25 16 27 33 35 27 376 30 9

26 13 40 20 31 20 20 36 49 10 37 57 82 39 519 27 12 8

1 10 15 22 16 23 25 17 11 25 37 40 12

>10. 00 1

5 11 2

3 0

4 2

21 10 6

13 23 12 0

11 Total 110 65 155 185 139 73 89 72 150 147 145 103 155 187 224 143 2142 Tot Hours of Hours of Hours of Hours of Hours in 0

11 20 50 166 Calm.............

0 Variable Direction 0

Valid Data.

2142 Missing Data 18 Period......

2160 245 330 301 124 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

0 1

0 0

0 Range (m/s) 2.1-3.0 1

1 4

4 4

0 0

1 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 1

2 45 1

0 00 1

0 01 1

1 0

0 0

2 4

2 5

0 0

1 0

0 0

0 2

1 3

0 1

0 11 0

0 0

0 00 0

0 1

3 1

0 1

0 01 1

2 0

1 0

2 0

0 0

0 1

0 0

1 0

0 2

2 0

0 6

>10. 00 0

0 0

1 0

0 Total 3

5 15 15 16 0

2 0

2 3

1 4

3 5

0 3

Tot 0

2 15 17 14 9

13 1

77 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period..........

0 0

77 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

00 0

Range (m/s) 2.1-3.1-3.0 4.0 2

1 0

1 3

2 1

1 0

0 0

1 2

0 0

0 1

0 2

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 1

2 0

0 0

0 01 1

0 3

0 8

0 0

0 1

1 1

1 0

00 1

0 1

1 1

0 0

0 1

0 2

1 2

0 0

2 0

3 6

0 0

0 1

0 0

1 0

0 21 1

1

>10. 00 0

0 0

1 0

2 0

0 Total 3

2 8

6 4

1 4

1 2

2 2

7 4

8 12 3

Tot Hours of Hours of Hours of Hours of Hours in 2

13 8

8 18 7

5 69 Calm...........

Variable Direction Valid Data.

Missing Data.

Period..........

0 0

69 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

1 0

0 1

0 0

Range (m/s) 2.1-3.0 0

2 3

2 0

0 0

0 1

1 0

1 2

1 3.1-4.1 4.0 5.0 5.1-6.1-8.1-6.0 8.0 10.0 1

2 4

2 0

0 0

0 2

1 0

2 3

0 1

2 0

1 0

0 0

1 3

11 2

1 1

21 1

2 2

2 0

0 1

3 3

2 2

2 1

0 2

1 2

11 1

00 0

1 2

0 1

4 2

2 0

0 0

0 1

0 0

2 1

3 0

0 0

1 5

0

>10. 00 0

0 0

0 1

0 0

0 1

0 4

0 0

1 Total 7

6 11 10 5

4 0

2 4

9 10 6

8 13 14 5

Tot 0

2 2

13 18 15 24 20 13 7

114 Hours Hours Hours Hours Hours of of of of in Calm...

Variable Direction Valid Data.

Missing Data Period.........

0 0

114 18 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 Elevations::

Winds 300ft based on Lapse Rate Stability 300ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 1

0 0

1 0

2 0

1 2

01 1

0 2

0 0

01 1

0 2

1 2

1 4

1 12 1

0 0

0 1

5 3

5 1

3 Range (m/s) 2.1-3.1-3.0 4.0 1

5 2

7 3

16 11 20 2

11 1

4 1

2 1

3 5

16 13 7

8 13 8

8 6

7 6

6 4

12 10 7

4 3

20 56 12 3

1 13 28 12 8

7 11 11 18 16 11 5

17 26 22 7

9 9

22 11 8

7 11 22 20 18 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 23 3

16 9

35 10 14 14 8

11 12 3

18 24 44 25 25 12 8

1 8

12 13 13 9

6 3

1 16 20 29 11

>10. 00 1

5 11 2

2 0

4 2

8 3

2 6

11 8

0 10 Total 74 38 96 127 93 41 46 55 97 63 55 47 84 104 130 102 Tot 0

6 11 30 82 144 223 225 269 187 75 1252 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period..........

0 0

1252 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0 Range (m/s) 2.1-3.1-3.0 4.0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0

<0.50 0

0 0

0 1

0 0

1 0

0 0

1 0

0 0

0 1

0 0

1 0

2 0

1 0

0 0

1 0

5 3

0 0

2 0

0 0

1 0

1 5

6 6

2 2

4 0

2 0

2 4

2 0

2 3

0 5

5 3

3 3

14 1

6 4

3 2

6 3

3 2

4 4

4 3

3 01 5

4 1

3 12 4

7 2

5 2

3 5

5 2

2 10 10 6

10 8

13 9

2 5

6 0

2 9

13 5

10 21 22 1

14 21 28 5

0 0

0 3

8 0

13 13 12 7

5 13 5

0

>10. 00 0

0 0

0 13 6

3 5

8 1

0 0

Total 16 11 25 24 21 27 34 13 43 67 58 29 45 50 65 24 Tot Hours of Hours of Hours of Hours of Hours in 0

4 4

12 38 52 64 99 164 79 36 552 Calm...........

Variable Direction Valid Data.

Missing Data Period..........

0 0

552 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 1

0 0

1 0

0 0

1 0

0 3

0 0

0 1

0 0

1 0

2 Range (m/s) 2.1-3.1-3.0 4.0 0

0 0

0 2

0 0

1 0

0 0

1 1

1 0

2 1

1 0

0 1

0 0

1 0

0 0

0 1

0 0

01 1

2 0

0 0

11 0

0 00 1

0 1

0 3

1 3

0 0

0 3

0 0

0 1

0 0

2 11 2

4 4

2 5

2 0

0 0

0 1

2 3

0 0

9 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0

>10. 00 0

0 0

0 Total 7

3 0

0 3

1 2

3 18 10 11 7

3 6

Tot 0

1 5

6 6

11 34 0

77 Hours of Calm...........

Hours of Variable Direction Hours of Hours of Hours in Valid Data.

Missing Data Period...

0 0

77 18 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot Wind 0.5-1.1-

<0. 50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 Range (m/s) 2.1-3.1-3.0 4.0 0

0 0

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

0 1

0 0

0 1

0 0

00

>10. 00 0

0 0

Total 0

0 0

0 1

0 0

0 1

0 Hours of Calm...

Hours of Variable Direction Hours Hours Hours of of in Valid Data.

Missing Data.

Period..........

0 0

1 18 2160 Page 47 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 Site:: Dresden Generating Station Period:: Months Apr Jun for years 2011 -

2011 All Stabilities Elevations::

Winds 35ft Stability 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

< 0.50 1.0 1.5 0

0 0

0 7

2 5

s 4

4 7

7 2

4 0

2 2

4 2

1 8

4 5

4 8

11 7

9 11 6

6 8

13 5

6 7

Speed 1.6-2.0 13 11 19 14 11 8

5 9

4 19 15 13 16 11 6

17 Range (m/s) 2.1-3.1-3.0 4.0 14 14 25 22 42 58 52 42 42 38 26 22 18 30 37 24 34 34 22 21 18 12 22 17 30 32 13 27 9

14 16 6

4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 11 31 43 17 30 31 32 16 25 21 21 18 35 24 18 3

5 29 24 5

14 15 32 12 19 19 11 20 36 20 15 3

8 36 15 2

11 15 14 13 31 19 12 6

28 22 6

0 0

12 0

0 3

2 5

2 6

13 S

0 1

2 1

0

>10. 00 0

1 0

0 0

0 2

3 4

7 1

0 0

0 Total 80 173 211 141 161 134 152 132 170 151 101 106 193 128 77 53 Tot Hours of Hours of Hours of Hours of Hours in 0

58 118 191 420 413 376 279 238 52 18 2163 Calm...........

Variable Direction Valid Data.

Missing Data Period.........

1 0

2164 20 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0 Range (m/s) 2.1-3.1-3.0 4.0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0

<0.50 0

0 0

0 4

1 0

0 0

3 0

0 0

1 0

0 0

1 4

4 2

0 1

0 0

1 2

11 2

1 1

1 2

5 3

2 53 3

4 0

0 2

3 0

1 11 13 7

11 4

2 4

4 6

2 3

3 2

2 0

0 9

14 1

7 2

6 0

3 4

0 0

5 5

3 1

1 5

12 0

0 1

1 0

0 4

6 7

3 0

0 2

8 0

0 1

0 01 1

0 3

10 6

2 0

0 0

1 0

0 2

0 0

1 0

4

>10. 00 0

0 0

0 1

0 0

0 Total 11 24 54 12 21 13 14 11 13 14 4

14 28 22 13 4

Tot 0

Hours of Calm........

Hours of Variable Direc Hours of Valid Data.

Hours of Missing Data Hours in Period.

0 11 21 35 65 60 41 34 0

tion 0

272 20 2184 272 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5

<0.50 0

0 0

1 0

0 0

Speed 1.6-2.0 2

0 0

0 1

0 0

01 1

0 0

0 1

Range (m/s) 2.1-3.0 0

0 1

2 3

1 0

2 1

1 0

0 2

1 0

2 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 1

1 2

1 1

1 01 21 0

30 2

0 1

1 0

2 0

1 0

2 0

2 2

3 31 1

0 0

1 0

0 01 1

0 0

0 2

2 4

0 0

0 1

0 0

01 1

0 0

0 1

2 0

0 0

0 6

0 1

0 0

11 0

0 0

0 00

>10.00 0

0 0

0 1

1 0

0 0

0 Total 5

3 6

3 4

5 6

3 4

10 7

10 1

5 Tot 0

1 6

16 17 19 11 3

2 81 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period..........

0 0

81 20 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 0

1 0

2 01 01 1

0 0

0 2

1 0

0 0

0 6

0 0

1 0

0 0

0 1

0 0

2 0

Range (m/s) 2.1-3.0 0

0 0

2 1

01 1

2 0

0 1

0 4

3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 2

2 2

0 5

0 2

1 0

0 3

0 0

0 1

2 1

2 2

0 3

1 3

1 11 2

1 0

0 01 1

0 00 4

1 13 1

2 2

0 0

0 1

0 0

2 0

1 2

1 0

0 4

0 0

0 1

0 0

0

>10. 00 0

0 0

11 0

0 0

00 Total 3

6 5

5 9

2 12 4

12 8

4 5

11 2

3 4

Tot 4

13 19 21 16 11 2

95 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 0

95 20 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 Elevations::

Winds 35ft based on Lapse Rate Stability 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 2

0 1

0 0

1 10 1

2 0

0 2

3 0

0 0

0 3

5 1

2 0

1 11 3

1 2

1 01 3

Range (m/s) 2.1-3.1-3.0 4.0 3

2 6

7 17 22 13 21 7

7 3

3 1

5 8

5 6

10 3

1 2

2 5

8 6

12 4

11 1

4 4

2 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 3

9 18 9

7 7

7 10 5

7 7

12 11 9

7 1

4 15 6

2 2

3 8

5 5

8 3

6 21 7

10 3

6 28 6

1 6

6 7

5 9

12 7

1 13 16 3

0 0

7 0

0 3

2 4

1 3

5 3

0 1

2 0

0

>10.00 0

1 0

0 0

2 1

2 0

0 0

0 Total 19 78 74 48 35 25 33 38 42 41 25 36 68 49 26 13 Tot 4

10 25 89 122 129 108 126 31 6

650 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

650 20 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 2

01 1

1 2

22 1

1 00 1

01 1

0 1

4 2

4 4

4 3

2 4

2 3

5 3

3 3

5 4

10 13 7

6 1

8 1

4 5

4 8

6 1

6 Range (m/s) 2.1-3.1-3.0 4.0 9

8 13 11 19 19 31 13 29 13 12 14 12 17 18 13 17 15 11 8

5 8

7 0

17 14 6

12 7

8 5

3 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 6

11 8

5 13 22 15 5

12 7

11 3

14 6

7 0

0 8

4 3

12 11 19 4

12 8

6 6

5 2

2 0

2 5

01 55 6

7 19 5

4 0

1 0

0 4

0 0

0 1

2 5

1 0

0 0

>10. 00 0

0 0

0 3

4 0

0 0

0 Total 32 57 65 69 84 76 76 61 84 57 42 23 65 35 30 18 Tot 0

16 47 89 218 176 145 102 61 13 7

874 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

874 20 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 3

0 4

2 1

0 3

5 0

3 01 1

3 0

0 2

1 0

0 21 1

2 4

1 2

2 4

1 2

2 1

0 2

0 0

2 0

0 2

9 6

3 4

3 1

4 Range (m/s) 2.1-3.0 1

3 0

1 0

3 1

5 4

6 9

6 2

1 0

0 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 0

0 0

0 1

0 41 1

4 0

3 0

0 0

2 0

0 0

0 2

0 0

1 0

0 0

1 0

0 0

0

>10. 00 0

0 0

0 Total 7

4 6

3 4

6 9

13 11 25 18 15 11 83 6

Tot Hours of Hours of Hours of Hours of Hours in 0

26 27 37 42 14 0

149 Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

149 20 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

1 2

2 1

0 1

0 0

1 0

0 1

0 0

5 2

0 1

0 2

01 1

1 1

1 0

0 0

1 0

0 2

0 1

2 0

0 2

9 Range (m/s) 2.1-3.1-3.0 4.0 0

0 1

0 0

0 2

0 0

0 1

0 2

0 1

0 0

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

>10. 00 0

0 0

0 Total 31 1

1 2

9 4

0 2

3 4

3 3

2 1

3 Tot Hours Hours Hours Hours Hours of of of of in 0

10 16 Calm.............

1 Variable Direction 0

Valid Data 43 Missing Data 20 Period......

2184 7

0 0

0 42 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

1 0

11 0

01 0

20 22 1

0 1

1 2

0 4

4 2

2 0

5 2

0 2

6 1

3 5

7 7

5 7

6 2

2 6

2 5

4 4

9 2

3 8

Range (m/s) 2.1-3.1-3.0 4.0 11 14 16 20 32 32 29 33 23 27 12 13 15 16 16 28 19 17 3

14 6

11 11 13 15 25 9

11 12 10 14 9

4.1-5.0 13 26 48 41 34 9

26 26 29 27 15 21 34 15 5

4 5.1-6.1-8.1-6.0 8.0 10.0 22 24 33 19 27 26 31 21 30 15 20 26 29 23 15 1

22 45 29 13 29 41 41 17 29 32 22 36 66 32 18 2

8 23 8

4 9

19 12 12 28 16 8

11 24 10 4

0

>10. 00 2

12 0

1 6

5 8

6 14 15 11 1

4 5

0 1

Total 101 176 187 152 166 129 153 133 173 131 97 127 214 109 70 45 Tot 0

13 39 79 243 293 373 362 474 196 91 2163 Hours of Calm...........

Hours of Variable Direction Hours of Valid Data.

Hours of Missing Data Hours in Period.........

0 1

2164 20 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

1 0

1 2

3 2

11 1

00 2

0 1

2 0

0 1

Range (m/s) 2.1-3.1-3.0 4.0 3

1 3

3 4

5 1

6 2

7 3

1 3

1 1

8 1

0 0

1 1

0 2

1 3

1 1

0 2

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

4 10 3

8 3

1 3

7 2

1 1

4 1

1 0

5 7

10 2

5 6

2 0

4 1

0 2

2 5

3 0

1 6

11 0

0 1

0 0

1 0

0 4

16 5

3 0

0 4

3 0

0 1

0 01 1

0 5

6 5

1 0

>10. 00 0

0 0

0 2

0 0

2 0

0 0

1 0

0 Total 13 30 44 14 23 15 9

14 14 8

4 14 34 21 10 5

Tot 0

Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

6 16 32 35 49 54 48 27 0

0 272 20 2184 5

272 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 2

0 0

0 1

0 0

0 1

01 1

Range (m/s) 2.1-3.1-3.0 4.0 0

1 0

0 1

1 2

0 2

1 1

0 1

0 0

1 1

1 0

2 1

0 1

2 0

0 1

0 0

2 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 1

2 0

1 1

0 1

0 01 1

1 0

1 12 0

1 1

1 0

20 3

2 0

1 1

0 0

2 0

0 0

0 3

0 0

5 5

3 1

0 0

1 0

0 0

2 0

0 0

0 4

>10. 00 1

0 0

0 2

0 1

0 0

0 Total 5

5 3

3 6

3 8

2 6

2 5

13 7

6 3

4 Tot 0

6 11 11 11 14 19 5

81 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 0

81 20 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 Elevations::

Winds 150ft Stabilii based on Lapse Rate ty 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 2

0 1

0 0

3 0

0 0

5 11 0

0 0

00 1

0 0

1 0

Range (m/s) 2.1-3.1-3.0 4.0 0

0 0

3 0

0 2

1 0

0 0

0 1

1 1

1 0

0 0

0 1

0 0

1 1

0 3

0 1

0 4.1-5.1 5.0 6.0 6.1-8.1-8.0 10.0 2

1 0

2 2

0 2

0 3

1 0

0 2

0 0

0 2

1 1

2 2

1 22 0

0 2

0 0

0 1

2 1

0 1

4 0

1 3

2 3

2 1

0 0

0 2

1 10 1

3 0

0 0

>10. 00 0

0 0

2 1

0 0

0 Total 5

8 3

9 4

4 10 6

11 7

3 9

8 3

4 1

Tot 0

4 11 8

15 16 21 10 3

95 Hours of Calm...........

Hours of Variable Direction Hours of Hours of Hours in Valid Data.

Missing Data Period.........

0 0

95 20 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 Elevations::

Winds 150ft based on Lapse Rate Stability 1SOft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 0

1 0

0 0

0 2

1 0

0 0

3 0

1 0

2 0

01 1

0 0

1 2

0 0

2 0

2 2

0 1

2 Range (m/s) 2.1-3.0 2

6 7

2 4

0 3

5 5

2 0

3 1

1 0

7 3.1-4.1-5.1-6.1 4.0 5.0 6.0 8.0 1

3 13 11 45 4

3 1

2 3

s 1

1 1

2 8

20 18 5

0 5

5 7

1 3

6 11 7

2 2

4 5

14 7

5 3

8 9

7 3

4 13 11 6

2 1

9 25 10 5

7 9

8 8

9 12 6

13 29 13 10 2

8.1-10.0 8

17 5

2 3

9 6

3 8

7 3

3 14 4

2 0

>10. 00 0

8 0

1 4

4 3

2 5

5 6

1 4

4 0

0 Total 27 74 71 46 35 30 35 37 46 33 24 45 78 36 18 15 Tot 0

9 12 48 59 102 102 175 94 47 650 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data....

Missing Data Period.........

0 0

650 20 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 11 0

0 0

0 00 0

0 0

1 0

0 0

0 2

2 0

3 1

5 4

2 0

1 2

21 1

2 2

0 0

Range (m/s) 2.1-3.1-3.0 4.0 4

8 3

8 18 13 20 15 13 15 4

7 2

9 9

11 5

9 1

8 2

6 2

4 6

13 1

7 5

7 2

3 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 8

9 17 17 17 5

12 16 8

14 2

6 11 4

2 1

11 10 7

8 14 14 15 7

15 5

9 2

15 11 9

0 12 11 6

7 21 30 26 9

18 13 13 10 14 10 4

0 0

2 0

2 6

6 6

6 18 7

4 0

1 1

1 0

>10. 00 1

4 0

0 21 1

4 8

6 3

0 0

1 Total 44 50 62 76 93 70 71 63 83 57 40 25 64 36 30 9

Tot 3

8 26 97 143 149 152 204 60 31 873 Hours Hours Hours Hours Hours of of of of in Calm...

Variable Direction Valid Data.

Missing Data.

Period.........

0 1

874 20 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

01 0

0 0

1 1

1 0

00 1

0 1

2 1

0 1

1 0

0 0

1 3

0 0

1 0

2 0

0 2

Range (m/s) 2.1-3.0 2

3 2

21 1

4 0

6 0

2 1

6 2

2 1

3.1-4.1 4.0 5.0 3

2 0

0 0

0 1

2 3

2 2

4 4

2 0

0 0

2 0

0 1

1 31 3

9 8

7 3

2 0

0 0

1 2

3 1

5 3

4 1

0 0

0 1

0 0

4 0

1 0

0 0

0 6

5.1-6.1-8.1-6.0 8.0 10.0 0

0 0

0 1

0 0

0

>10.00 0

0 0

0 Total 6

7 2

3 4

4 11 9

13 22 17 19 18 7

2 5

Tot Hours of Hours of Hours of Hours of Hours in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

9 10 35 25 40 20 0

0 149 20 2184 1

0 149 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 0

2 0

0 0

1 0

0 1

0 0

1 1

0 0

1 0

0 0

00 0

2 Range (m/s) 2.1-3.1-3.0 4.0 0

0 1

1 0

0 0

0 1

0 3

0 1

3 0

1 0

0 0

1 1

0 0

1 0

0 1

2 1

3 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 1

0 0

0 2

1 0

0 1

0 2

0 0

0 1

0 0

11 1

0 0

1 0

0 0

1 0

0 0

>10. 00 0

0 0

0 Total 1

2 21 1

3 9

2 0

2 4

2 5

0 3

6 Tot 3

2 5

9 12 7

0 43 Hours Hours Hours Hours Hours of of of of in Calm...

Variable Direction Valid Data.

Missing Data Period.........

0 0

43 20 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

2 0

0 0

1 0

0 1

0 0

0 2

1 0

3 2

2 3

1 0

4 21 1

0 2

0 1

0 7

4 3

7 6

2 1

2 2

4 4

2 2

7 Range (m/s) 2.1-3.1-3.0 4.0 7

8 12 9

7 30 25 36 16 20 10 10 11 9

9 13 10 19 8

7 6

4 8

11 10 9

7 6

12 10 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 7

16 33 40 22 13 13 18 18 16 8

15 11 20 13 6

11 26 44 32 20 12 17 30 25 19 13 14 18 24 11 7

11 45 42 20 29 36 53 34 44 38 45 34 65 52 31 12 S

47 18 6

17 26 20 12 25 36 13 21 43 28 17 1

>10.00 1

23 11 2

19 16 16 9

31 35 20 3

8 12 3

1 Total 57 187 190 170 152 127 140 131 176 162 112 103 170 157 93 57 2184 Tot 0

Hours of Calm........

Hours of Variable Direc Hours of Valid Data.

Hours of Missing Data Hours in Period.

7 22 56 166 0

tion 0

2184 0

2184 205 269 323 591 335 210 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

3 0

0 0

1 0

0 0

0 2

1 11 0

1 Range (m/s) 2.1-3.1-3.0 4.0 0

0 3

1 1

5 1

2 3

2 1

0 2

3 2

2 0

0 0

0 3

0 0

0 2

1 0

0 0

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

1 6

5 6

4 1

3 2

3 1

0 0

5 8

1 6

1 2

0 1

3 0

0 3

0 2

0 0

5 9

0 1

0 2

2 1

0 0

1 6

5 5

0 0

0 5

0 0

2 4

3 3

0

>10. 00 0

0 3

0 0

0 2

1 2

2 0

0 0

1 1

0 Total 0

17 35 12 16 118 10 8

3 7

14 13 12 1

Tot Hours of Calm...

Hours of Variable Direction Hours of Valid Data.

Hours of Missing Data.

Hours in Period.........

1 10 21 16 32 32 37 17 12 0

0 178 0

2184 178 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 2

0 0

5 1

2 0

0 0

0 1

0 0

1 0

00-Range (m/s) 2.1-3.1-3.0 4.0 1

1 0

1 1

2 1

1 1

0 1

1 1

1 0

1 1

0 0

0 1

2 2

0 1

0 4.1-5.1 5.0 6.0 6.1-8.1-8.0 10.0 0

0 2

11 0

1 1

0 30 1

1 1

0 0

0 2

3 1

0 2

1 3

2 2

2 3

1 21 1

0 3

3 0

3 01 3

00 0

3 5

4 1

0 0

0 3

0 0

1 01 1

2 0

2 2

2 0

0

>10. 00 0

0 0

0 01 1

0 0

3 0

0 1

0 0

0 Total 7

7 14 7

6 5

6 11 4

11 3

9 12 12 4

2 Tot 0

Hours of Calm...

Hours of Variable Direction 2

10 12 12 12 26 26 14 0

0 120 0

2184 6

120 Hours Hours Hours of of in Valid Data.

Missing Data Period.........

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 1

0 0

0 1

0 0

0 1

0 0

1 0

0 0

01 1

Range (m/s) 2.1-3.1-3.0 4.0 0

1 0

0 1

0 3

1 1

2 0

0 1

1 0

3 2

0 1

0 0

1 0

0 0

2 1

0 1

0 2

2 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 1

12 1

3 0

1 0

2 2

0 2

1 2

0 1

2 2

1 01 1

0 0

0 1

5 0

2 0

4 4

3 5

2 3

6 7

1 2

0 0

2 0

0 01 1

0 3

5 0

0 0

>10.00 0

1 0

0 0

2 1

0 2

4 2

0 1

0 0

0 Total 2

5 12 6

11 3

10 10 11 17 5

9 17 11 3

8 Tot 3

5 13 13 19 14 45 15 13 140 Hours Hours Hours Hours Hours of of of of in Calm...

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

140 0

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 Elevations::

Winds 300ft based on Lapse Rate Stability 300ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 1

0 0

0 2

0 0

2 1

01 1

0 3

2 0

0 0

1 0

0 4

2 0

1 0

0 1

0 2

2 0

0 3

Range (m/s) 2.1-3.1-3.0 4.0 4

2 7

6 3

22 11 20 3

5 2

2 2

2 4

1 2

7 4

3 0

1 3

2 3

5 2

1 1

2 4

2 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 2

9 17 27 7

4 3

4 6

2 3

4 2

8 5

4 2

10 24 28 11 4

5 10 9

2 2

5 4

13 2

3 5

17 21 16 8

17 19 14 13 10 19 16 26 15 17 7

4 39 8

6 14 9

11 4

9 14 11 10 25 19 12 1

196

>10. 00 0

22 8

2 18 11 12 6

14 17 14 2

6 11 2

0 Total 20 112 104 114 69 51 55 46 63 53 50 44 73 69 43 24 Tot Hours of Hours of Hours of Hours of Hours in 0

4 10 16 55 83 107 134 240 145 990 Calm...........

Variable Direction Valid Data.

Missing Data.

Period..........

0 0

990 0

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 Elevations::

Winds 300ft Stabi based on Lapse Rate lity 300ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

1 0

0 0

1 0

0 0

2 1

0 0

2 2

1 0

0 0

1 0

0 Range (m/s) 2.1-3.1-3.0 4.0 2

2 1

2 0

4 8

7 8

9 4

5 5

3 1

4 1

3 5

1 1

0 3

1 4

4 2

3 3

3 4.1-5.1-6.1-8.1 5.0 6.0 8.0 10.0 1

3 6

6 5

5 4

7 4

3 4

7 3

6 7

1 5

6 51 1

4 8

10 8

11 7

5 7

7 3

3 5

19 3

4 15 19 25 10 23 19 14 3

19 20 6

2 1

8 0

0 3

16 8

6 15 13 2

3 6

4 2

0

>10. 00 1

0 0

0 1

2 0

2 13 9

4 1

0 0

0 1

Total 18 40 18 28 45 56 53 39 68 59 37 21 40 46 23 13 Tot 1

8 49 54 72 91 206 87 34 604 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data..

Missing Data Period.........

0 0

604 0

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 Elevations::

Winds 300ft Stabili based on Lapse Rate ty 300ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 0

1 2

0 0

1 0

0 0

0 1

0 11 0

0 0

00 0

0 1

1 1

0 0

0 1

0 0

00 0

0 2

Range (m/s) 2.1-3.1-3.0 4.0 0

2 1

0 0

2 1

1 1

0 0

1 1

2 0

2 2

4 2

0 0

1 1

2 1

2 0

1 1

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 2

1 0

0 0

0 3

3 4

3 0

1 3

3 1

0 4

1 2

0 1

0 0

6 3

0 2

1 2

0 0

0 1

0 0

0 2

0 4

4 10 8

3 0

1 0

0 0

0 4

01 1

0 0

0

>10. 00 0

0 0

0 Total 8

4 7

3 3

1 8

12 18 14 14 13 12 5

6 4

Tot 0

6 12 21 24 24 33 6

0 132 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data Missing Data Period.........

0 0

132 0

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

Range (m/s) 2.1-3.1-3.0 4.0 0

0 0

0 1

1 0

0 0

0 1

1 0

0 0

1 0

0 0

0 1

3 4

6 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 11 0

0 0

0 1

0 00 0

1 0

0 0

0 1

0 2

1 0

0 0

0 1

0 0

0 1

4 0

0 0

>10. 00 0

0 0

Total 2

2 0

0 2

0 0

2 2

0 0

0 2

1 2

5 20 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 0

20 0

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

0 1

0 0

0 8

4 6

3 5

10 9

19 14 13 17 13 17 16 11 10 23 6

18 11 12 10 6

21 17 30 26 18 19 24 38 18 22 15 21 18 19 10 17 23 23 26 27 10 14 13 31 26 Range (m/s) 2.1-3.1-3.0 4.0 21 33 34 35 43 14 38 10 53 16 28 26 17 9

59 17 41 32 44 32 69 20 34 29 41 18 37 13 39 21 67 68 4.1-5.1-6.1 5.0 6.0 8.0 8.1-10.0 14 14 14 3

4 11 14 5

15 10 11 20 4

7 10 30 186 8

9 5

0 1

0 9

4 10 4

5 12 3

3 5

9 7

17 0

0 0

1 1

8 8

7 0

1 1

S 3

13 0

1 0

0 0

1 0

0 0

3 3

0 8

>10.00 0

0 0

0 Total 136 135 121 83 110 96 83 157 161 166 175 137 118 121 161 241 Tot 3

175 297 315 665 393 87 72 0

2201 Hours of Hours of Hours of Hours of Hours in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

4 0

2205 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0 Range (m/s) 2.1-3.1-3.0 4.0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0

<0.50 0

0 0

0 1

0 0

0 1

0 0

0 1

0 2

2 21 1

1 2

2 0

1 0

2 3

3 3

4 4

5 4

3 5

5 2

3 5

2 7

5 3

0 6

9 9

3 5

5 5

14 4

13 21 15 8

8 13 20 6

11 3

3 3

5 4

2 11 8

11 19 11 3

8 20 128 3

3 6

2 0

2 4

2 3

3 3

12 2

0 4

6 2

2 2

0 0

01 1

2 2

5 9

2 2

3 2

3 9

0 0

0 1

3 2

01 1

3 0

5 0

0 0

>10. 00 0

0 0

0 Total 25 38 26 15 14 16 20 26 27 33 45 59 32 23 34 56 Tot 0

2 23 60 158 55 35 28 0

489 Hours Hours Hours Hours Hours of of of of in Calm...

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

489 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 1

1 0

00 1

0 2

0 0

0 1

0 01 0

0 0

0 1

Range (m/s) 2.1-3.0 0

31 1

2 0

0 1

1 0

1 03 0

02 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 01 1

1 0

0 2

1 3

2 1

2 0

0 0

4 4

1 0

0 0

00 2

0 1

4 0

0 0

1 2

0 0

2 4

2 1

0 0

3 0

0 0

>10. 00 0

0 0

0 Total 9

6 5

3 2

1 3

3 6

4 5

6 4

0 0

10 Tot 0

7 15 18 14 0

67 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 0

67 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

1 0

0 0

0 1

0 3

0 0

1 0

0 0

1 1

0 10 1

Range (m/s) 2.1-3.1-3.0 4.0 1

2 0

0 1

2 1

0 1

0 0

1 3

2 1

3 2

2 2

1 0

2 0

0 1

0 0

1 1

1 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 11 1

0 0

1 0

1 01 0

3 9

0 2

0 0

3 0

0 1

0 0

0 2

1 3

0 0

1 0

0 0

0 2

0 0

0

>10. 00 0

0 0

0 Total 5

6 4

3 2

1 2

6 8

5 4

5 0

3 2

10 Tot 7

15 17 8

7 0

Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

66 3

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 Elevations::

Winds 35ft based on Lapse Rate Stability 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

1 1

0 0

2 0

0 1

0 0

0 2

1 2

0 0

2 3

1 1

2 12 4

1 1

1 2

2 3

2 5

51 1

1 22 0

31 1

0 5

1 Range (m/s) 2.1-3.1-3.0 4.0 5

2 4

7 6

7 9

1 9

6 7

9 1

1 4

5 6

1 2

6 6

2 5

3 2

4 9

5 4

2 13 16 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 2

2 3

0 0

2 3

2 2

4 5

1 0

3 2

7 3

4 1

0 0

0 3

13 2

0 1

0 10 2

1 4

0 0

01 1

1 3

5 0

0 0

3 0

1 0

0 0

0 1

>10. 00 0

0 0

0 Total 17 27 26 16 17 23 11 17 19 21 20 12 10 20 17 44 Tot Hours of Hours of Hours of Hours of Hours in 0

11 25 33 92 77 38 21 19 0

317 Calm...........

Variable Direction Valid Data Missing Data Period.........

0 0

317 3

2208 Page 76 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

2 2

1 2

2 3

3 6

41 1

2 3

3 4

9 1

9 6

8 5

3 4

8 4

5 1

2 8

13 7

8 8

9 7

12 5

4 8

8 11 3

1 4

4 8

13 Range (m/s) 2.1-3.1-3.0 4.0 7

20 17 16 26 3

24 3

34 7

13 12 4

1 23 6

22 10 17 10 9

4 7

3 26 3

18 5

18 10 21 21 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 4

7 3

1 4

7 7

1 8

2 2

3 4

1i 11 2

0 1

0 5

2 2

0 01 1

0 2

1 0

0 0

6 1

0 0

2 3

3 0

0 0

1 0

0 0

3 3

0 7

>10. 00 0

0 0

0 Total 49 52 54 42 68 44 27 54 66 48 24 16 40 46 64 81 Tot Hours of Hours of Hours of Hours of Hours in 1

39 93 113 286 134 68 19 15 0

775 Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

775 3

2208 Page 77 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind Speed 0.5-1.1-1.6-1.0 1.5 2.0

<0.50 0

0 0

0 1

0 0

0 51 2

2 5

3 11 6

5 8

7 7

9 5

4 12 3

3 1

1 1

1 10 4

13 10 9

12 11 12 6

7 0

01 1

1 5

7 11 9

9 4

2 3

9 8

Range (m/s) 2.1-3.1-3.0 4.0 2

3 1

0 0

0 2

0 7

0 14 1

7 4

9 4

24 1

4 0

2 0

1 0

4 0

9 6

4.1-5.1-6.1-5.0 6.0 8.0 8.1-10.0 0

0 0

2 2

0 0

>10. 00 0

0 0

0 Total 29 5

4 4

6 9

17 43 32 40 52 24 23 24 30 35 Tot 1

81 109 77 88 19 0

0 377 Hours of Calm...........

Hours of Variable Direction Hours of Valid Data.

Hours of Missing Data.

Hours in Period.........

2 0

379 3

2208 Page 78 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

0 1

0 2

01 1

3 S

1 4

8 5

5 3

1 2

1 0

0 0

0 1

0 2

2 8

6 6

3 2

7 0

0 1

0 0

0 1

0 2

5 1

0 0

6 2

Range (m/s) 2.1-3.0 0

0 0

1 6

3 0

0 0

1 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 0

0 0

>10. 00 0

0 0

0 Total 2

1 2

0 1

2 3

8 3

15 25 15 9

5 14 5

Tot Hours Hours Hours Hours Hours of of of of in 1

42 38 18 11 Calm.............

2 Variable Direction 0

Valid Data.

112 Missing Data 3

Period......

2208 0

110 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

4 3

2 1

5 0

3 0

2 1

6 7

5 4

4 2

6 12 8

4 5

5 8

4 5

7 8

7 7

9 5

15 11 23 12 6

13 9

11 11 12 13 4

11 13 15 8

Range (m/s) 2.1-3.1-3.0 4.0 34 23 28 34 48 18 31 28 26 27 23 20 25 22 30 33 22 43 28 40 39 44 31 30 43 30 22 17 21 32 28 53 4.1-5.0 15 26 11 14 24 12 20 26 39 38 34 20 28 16 27 45 5.1-6.0 36 20 13 2

10 16 11 10 20 15 18 12 8

8 18 36 6.1-8.1-8.0 10.0 14 21 3

0 3

13 10 8

19 13 13 19 4

8 7

28 7

8 0

0 1

10 3

3 0

2 1

2 3

7

>10.00 0

1 0

0 0

2 0

0 0

6 6

1 Total 146 159 131 97 102 107 103 141 161 156 169 132 139 104 142 215 Tot Hours of Hours of Hours of Hours of Hours in 0

47 102 187 479 494 395 253 183 48 16 2204 Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

1 0

2205 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

01 1

0 0

1 01 1

0 0

1 2

0 0

0 1

2 1

2 0

7 2

4 3

3 2

1 4

2 2

1 3

3 1

Range (m/s) 2.1-3.1-3.0 4.0 5

2 7

9 7

4 3

3 7

0 5

4 8

4 10 4

6 7

8 10 16 14 9

9 11 9

7 2

11 10 6

19 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 4

5 3

4 1

3 3

2 9

6 10 7

7 2

8 16 3

4 6

0 0

2 2

3 3

2 4

7 0

0 4

4 3

8 0

0 0

0 1

0 6

18 131 2

3 3

3 4

0 0

0 1

2 0

01 1

2 0

4

>10. 00 0

0 0

0 Total 23 37 28 13 12 17 22 24 34 31 54 48 31 20 41 54 Tot 0

2 10 40 126 110 90 44 49 18 0

489 Hours of Calm...

Hours of Variable Direction Hours Hours Hours of of in Valid Data.

Missing Data.

Period.........

0 0

489 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 0

0 1

01 1

0 0

0 1

10 1

0 0

01 0

1 0

00 0

0 0

i Range (m/s) 2.1-3.1-3.0 4.0 1

0 1

2 2

1 0

2 1

0 0

0 2

1 0

0 1

1 0

0 1

2 0

0 0

0 1

2 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

11 1

21 1

2 0

0 1

2 3

1 0

0 0

0 2

0 1

3 0

0 0

1 2

0 1

0 0

0 1

0 0

3 7

2 1

0 0

3

>10. 00 0

0 0

0 Total 9

6 6

2 1

2 2

5 6

2 5

6 4

0 1

10 Tot 0

5 7

10 12 12 11 0

67 Hours of Calm...........

Hours of Variable Direction Hours of Valid Data Hours of Missing Data Hours in Period.........

0 0

67 3

2208 Page 82 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot Wind Speed 0.5-1.1-1.6-

<0.50 1.0 1.5 2.0 0

0 0

0 1

0 0

1 0

0 0

0 2

0 0

1 0

0 11 1

4 Range (m/s) 2.1-3.0 0

0 2

0 1

0 3

1 1

10 1

0 0

12 2

0 01 0

0 2

2 4

0 2

0 0

0 2

16 0

0 1

1 0

0 11 1

0 1

0 00 2

0 8

1 1

1 0

0 0

0 1

0 01 0

0 2

7 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 2

2 0

0 0

0 3

0 0

2 0

0 0

4 13 11 0

0 0

01 0

0 0

0 00 1

4

>10. 00 0

0 0

Total 6

4 5

2 2

0 4

5 8

6 3

5 1

2 3

10 66 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 0

66 3

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 Elevations::

Winds 150ft based on Lapse Rate Stability 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 1

1 0

0 01 0

2 1

0 0

2 2

0 1

1 01 1

1 3

0 11 0

2 2

1 4

2 01 1

3 0

2 4

0 2

1 3

1 Range (m/s) 2.1-3.0 4

3 6

8 5

4 1

2 3

0 2

3 3

4 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 4

7 7

4 3

2 1

6 3

4 3

5 0

6 3

11 1

3 4

2 6

3 2

2 2

31 1

3 2

3 10 2

2 2

0 2

7 4

2 0

2 2

1 3

3 3

8 4

6 1

0 0

1 2

1 4

7 3

11 1

1 2

0 0

1 0

1 4

0 3

0 1

0 0

1 2

>10. 00 0

1 0

0 0

0 Total 18 27 27 16 19 20 12 22 13 22 18 13 13 19 18 40 Tot 0

Hours of Calm........

Hours of Variable Direc Hours of Valid Data.

Hours of Missing Data Hours in Period.

8 16 27 54 69 48 43 35 16 0

tion 0

317 3

2208 1

317 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 Direction Sector Wind Speed 0.5-1.1-1.6-1.0 1.5 2.0 Range (m/s) 2.1-3.0 3.1-4.0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0

>10. 00

<0.50 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot 0

0 0

0 1

0 0

0 1

0 0

11 1

2 0

2 4

3 0

3 2

1 2

01 1

2 3

2 1

4 12 5

4 12 12 7

28 6

6 19 17 2

9 21 4

10 13 2

6 5

3 6

11 2

4 21 3

8 9

3 4

6 0

1 7

1 6

14 3

2 6

4 5

13 1

13 11 7

17 3

7 17 5

4 14 17 15 7

4 17 10 9

12 20 11 4

2 7

7 2

4 11 4

2 1

4 5

10 17 Iil 2

5 1

0 3

12 7

7 5

1 1

3 2

5 3

13 70 0

0 0

5 0

0 0

0 2

0 0

2 0

0 0

6 6

1 50 64 53 54 59 55 28 54 62 41 24 17 47 41 55 71 9

27 49 145 177 165 7

15 775 Hours of Calm...........

Hours of Variable Direction Hours of Valid Data Hours of Missing Data Hours in Period..........

0 0

775 3

2208 Page 85 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 1

1 0

2 0

1 0

00 4

5 0

1 1

1 2

3 4

31 1

2 11 1

3 1

1 2

0 6

5 4

2 0

2 2

2 5

2 3

0 7

3 1

2 Range (m/s) 2.1-3.1-3.0 4.0 8

5 5

4 2

0 1

1 1

2 4

1 6

11 4

8 5

9 8

12 7

14 9

4 16 4

8 3

2 6

3 8

4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 3

1 0

0 0

0 8

6 8

13 13 2

1 2

4 3

7 1

0 0

1 0

3 1

4 S

7 0

0 0

1 4

1 0

0 0

1 4

0 0

0 3

9 0

0 0

>10.00 0

0 0

0 Total 31 19 10 9

7 10 31 24 33 45 45 22 34 17 17 24 Tot Hours of Hours of Hours of Hours of Hours in 0

17 27 46 89 92 64 34 Calm.............

1 Variable Direction 0

Valid Data.

379 Missing Data 3

Period......

2208 0

378 Page 86 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

2 1

1 0

00 1

1 1

0 1

1 1

0 0

1 0

0 2

2 3

2 1

3 1

0 0

0 2

0 1

2 1

0 2

3 1

Range (m/s) 2.1-3.1-3.0 4.0 4

5 0

0 1

0 0

0 2

0 0

0 1

1 5

1 3

0 3

1 8

6 8

3 6

1 1

0 0

0 1

0 4.1-5.1-6.1-8.1 5.0 6.0 8.0 10.0 0

0 0

0 1

0 0

0 1

4 0

0 0

2 8

0 0

0 1

2 0

0 0

3 0

0 0

0

>10. 00 0

0 0

0 Total 9

2 2

1 2

3 4

7 5

9 20 21 9

5 7

6 Tot Hours Hours Hours Hours Hours of of of of in 0

11 15 14 43 18 Calm.............

0 Variable Direction 0

Valid Data.

112 Missing Data 3

Period......

2208 0

112 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 0

0 0

2 3

2 1

5 3

21 1

2 0

2 3

0 1

7 5

8 6

2 5

4 6

8 4

5 4

4 4

Speed 1.6-2.0 4

4 11 13 9

8 8

10 5

5 8

9 11 6

5 6

Range (m/s) 2.1-3.1-3.0 4.0 18 22 21 26 21 25 34 36 25 25 11 18 24 17 17 22 9

21 22 17 21 24 34 21 23 20 19 21 20 20 18 24 4.1-5.0 21 22 28 15 22 13 14 15 29 30 26 36 27 14 14 39 5.1-6.1-8.1-6.0 8.0 10.0 21 24 16 7

16 18 16 12 20 22 29 20 13 23 21 30 36 34 18 2

13 17 22 17 40 42 45 32 17 18 19 33 33 21 7

0 1

14 5

5 12 24 2

6 2

9 5

11

>10. 00 6

2 1

0 0

1 1

6 5

0 0

5 8

7 Total 168 161 138 115 114 110 114 112 146 169 165 162 120 122 116 173 Tot 0

28 82 122 337 359 365 308 405 157 42 2205 Hours of Calm...........

Hours of Variable Direction Hours of Valid Data.

Hours of Missing Data Hours in Period.........

0 0

2205 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 1

1 20 0

1 0

0 1

20 0

1 0

0 1

2 0

1 2

0 0

3 0

2 0

3 2

21 1

Range (m/s) 2.1-3.1-3.0 4.0 1

4 3

4 7

7 2

1 1

1 2

3 6

5 6

6 3

3 6

4 6

11 5

10 5

4 5

6 3

4 4

8 4.1-5.0 3

2 4

2 2

0 3

0 8

2 6

9 2

1 2

9 5.1-6.1-8.1-6.0 8.0 10.0 3

1 4

1 0

2 3

0 21 1

3 0

2 2

4 2

0 2

0 0

01 1

2 0

3 8

2 1

2 0

0 5

1 0

0 0

0 3

1 2

0 1

>10. 00 0

0 0

1 0

0 Total 14 17 28 65 18 15 20 18 28 41 16 20 15 29 Tot Hours of Calm........

Hours of Variable Direc 0

11 19 65 81 55 29 24 16 0

tion 0

301 3

2208 1

301 Hours Hours Hours of of in Valid Data.

Missing Data Period.

Page 89 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 0

2 0

0 0

0 1

0 0

3 1

2 0

0 0

1 0

1 Range (m/s) 2.1-3.0 2

2 1

3 3

3 1

21 1

0 6

3 2

2 2

3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 1

2 1

2 0

0 1

0 0

3 4

2 1

0 1

4 2

2 0

0 01 1

0 2

1 2

2 2

1 3

5 0

2 2

1 0

2 0

0 1

2 2

1 1

01 3

01 1

0 0

00 1

1 2

3 4

2 01 1

2 4

1 0

0 0

0 1

2 0

0 0

0 11 2

>10. 00 1

1 0

0 0

0 01 Total 8

14 6

11 4

8 3

7 7

9 11 16 10 5

9 19 Tot Hours of Hours of Hours of Hours of Hours in 0

1 Calm...........

Variable Direction Valid Data.

Missing Data Period..........

3 11 34 22 24 18 17 14 0

0 147 3

2208 3

147 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 2

0 0

11 1

0 00 2

0 1

9 0

0 1

0 0

1 11 1

0 10 1

1 0

1 Range (m/s) 2.1-3.0 0

0 21 3

0 1

2 2

1 3

1 0

2 2

3 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0

>10. 00 Total 2

41 3

0 1

2 0

1 0

2 1

2 0

4 1

1 1

2 42 3

2 3

1 2

2 31 1

0 00 1

21 1

2 2

0 0

2 2

6 2

1 0

0 0

1 0

0 6

0 0

0 1

4 3

1 0

0 0

3 1

0 1

0 0

1 0

0 0

1 17 11 10 3

7 2

6 10 13 7

9 14 5

8 6

14 Tot 9

23 24 28 18 17 13 142 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period..........

0 0

142 3

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 Elevations::

Winds 300ft based on Lapse Rate Stability 300ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 3

1 0

2 1

0 0

0 1

2 0

1 2

0 2

2 1

0 1

2 0

2 2

2 0

1 0

1 2

1 5

4 0

0 3

2 1

2 3

0 3

11 0

Range (m/s) 2.1-3.1-3.0 4.0 4

6 5

4 5

7 14 18 7

7 1

2 4

1 2

2 1

5 1

4 3

1 3

2 4

1 3

8 7

4 3

6 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 6

7 12 5

7S 1

4 2

3 6

7 5

2 3

15 4

5 4

3 5

6 3

3 1

5 2

1 2

6 5

14 4

13 10 0

4 6

8 4

10 4

5 2

4 7

4 13 2

3 2

0 0

0 3

3 4

10 0

3 0

1 0

3

>10. 00 1

1 1

0 0

1 0

6 4

0 0

2 7

6 Total 31 40 51 47 31 23 25 28 28 31 22 20 20 33 31 62 Tot Hours Hours Hours Hours Hours of of of of in 0

12 18 28 67 78 90 69 98 34 29 Calm.............

0 Variable Direction 0

Valid Data.

523 Missing Data 3

Period......

2208 523 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 Elevations::

Winds 300ft Stabi based on Lapse Rate lity 300ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 Range (m/s) 2.1-3.0 0

0 0

0 1

0 2

1 1

0 1

1 00 1

0 0

1 3

3 2

0 2

1 2

0 1

3 01 1

2 0

2 1

0 5

7 1

4 21 1

1 2

2 0

2 2

7 8

6 13 7

4 9

3 0

7 4

4 4

1 3.1-4.0 6

7 8

14 11 10 8

8 6

3 2

0 8

3 6

1 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 6

3 6

7 11 4

5 5

5 14 6

9 6

6 1

5 5

7 2

105 5

3 10 11 10 4

8 12 11 5

17 15 4

2 9

10 11 5

11 25 13 4

5 10 10 15 166 8

0 2

0 1

12 2

1 2

2 0

0 1

5 2

5 43

>10. 00 0

0 0

0 1

0 0

2 1

0 Total 52 45 34 46 56 50 46 30 36 65 40 23 35 44 39 34 Tot 9

22 33 85 101 99 113 4

675 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period..........

0 0

675 3

2208 Page 93 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 1

1 1

0 1

01 0

0 0

2 1

0 0

0 2

21 1

2 3

1 3

0 1

0 0

1 3

1 1

1 01 2

0 3

3 3

0 0

1 Range (m/s) 2.1-3.1-3.0 4.0 3

2 3

5 0

1 1

0 4

3 1

3 3

1 2

4 2

7 5

0 5

4 15 5

7 3

2 2

2 5

4 1

4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 3

4 5

0 1

2 3

3 7

8 3

4 6

2 3

3 5

7 0

0 1

34 3

5 2

12 4

2 3

0 2

7 3

0 0

0 1

2 6

15 11 21 7

3 0

2 3

17 6

0 0

0 2

0 0

1 6

1 0

0 0

2 0

>10.00 3

0 0

0 Total 42 30 9

2 11 16 16 20 41 34 53 39 28 9

15 14 Tot 0

Hours of Calm........

Hours of Variable Direc 6

19 20 59 46 57 53 81 35 0

ction 0

379 3

2208 3

379 Hours Hours Hours of of in Valid Data.

Missing Data Period.

Page 94 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 11 0

Range (m/s) 2.1-3.1-3.0 4.0 1

1 0

0 0

0 1

2 0

0 0

2 1

0 0

0 1

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

3 0

0 0

0 01 1

0 0

3 3

1 0

0 11 0

0 0

1 0

0 0

5 0

0 00 0

0 0

0 01 1

0 0

0 2

0 0

0 2

0 0

2

>10. 00 1

0 0

0 Total 4

4 0

0 0

2 1

5 2

9 6

31 1

Tot 0

0 2

4 7

12 1

38 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

38 3

2208 Page 95 of 121

DRESDEN NUCLEAR POWER STATION 2011 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT METEOROLOGICAL DATA Joint Frequency Distribution DOCKET NUMBERS: 50-010/50-237/50-249 Site::

Dresden Generating Station Period:: Months Oct Dec for years 2011 -

2011 All Stabilities Elevations::

Winds 35ft Stability 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 0

0 6

2 1

5 4

2 10 7

4 4

7 7

10 5

10 2

41 8

2 6

9 13 25 19 13 9

12 14 5

15 4

4 3

6 8

4 25 27 18 14 14 17 13 15 6

Range (m/s) 2.1-3.1-3.0 4.0 11 25 6

11 15 24 27 10 18 17 16 10 23 26 78 27 49 54 25 30 36 16 35 20 51 42 32 23 28 38 27 42 4.1-5.0 42 19 5

0 0

4 12 28 51 16 26 14 40 15 22 27 5.1-6.0 14 10 5

0 0

0 10 26 61 19 6

9 37 7

18 18 6.1-8.1-8.0 10.0 13 6

7 0

0 0

1 19 47 29 8

4 32 14 16 17 213 6

4 2

0 0

0 2

1 36 8

2 0

9 5

1 7

>10. 00 0

5 0

0 0

0 8

3 4

1 0

0 0

0 Total 125 67 73 52 51 50 101 236 356 165 128 116 252 119 163 150 Tot 1

86 159 188 477 415 321 240 83 21 2204 Hours of Hours of Hours of Hours of Hours in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

1 0

2205 3

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 Direction Sector N

NNE NE ENE R

ESE SE SSE S

SEW SW WEW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 Range (m/s) 2.1-3.1 3.0 4.0 4.1 5.0 5.1-6.1 6.0 8.0 8.1-10.0 0

0 0

1 0

0 0

1 0

2 01 1

0 0

2 0

0 0

11 0

0 0

1 0

10 1

2 0

1 0

2 0

1 3

0 0

1 4

0 0

2 11 9

3 0

2 1

2 2

2 1

0 2

5 6

4 0

3 4

6 2

3 4

0 0

4 4

0 6

6 2

2 4

0 1

1 0

0 0

0 2

3 13 5

1 5

4 2

0 0

25 1

2 8

7 3

1 0

0 0

0 1

0 0

0 2

0 0

0 3

>10. 00 0

0 0

0 Total 10 4

5 5

2 1

5 17 28 15 10 28 32 20 10 6

Tot 1

7 8

38 43 32 37 29 0

198 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

198 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot Wind Sp 0.5-1.1-1.0 1.5 eed Range (m/s) 1.6-2.1-2.0 3.0

<0.50 0

0 0

1 0

0 0

0 1

0 0

0 1

0 0

1 0

0 2

0 0

1 0

0 0

0 4

3.1-4.0 0

1 0

0 0

2 1

0 0

1 0

0 0

1 6

4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 1

0 0

0 1

1 1

1 8

0 1

0 0

0 1

2 2

0 0

1 0

0 0

7 0

0 0

0 6

1 0

0 0

3

>10. 00 0

0 0

Total 2

3 2

0 0

5 4

9 2

3 3

1 0

2 36 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

36 3

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 Elevations::

Winds 35ft Stabilil based on Lapse Rate ty 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 1

0 0

0 2

0 0

0 Range (m/s) 2.1-3.0 0

0 0

2 0

0 0

1 2

0 0

1 6

3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 1

0 0

0 1

01 00 2

0 6

1 2

0 0

1 0

0 1

0 0

5 0

0 0

1 0

0 0

0 2

1 4

0 0

4 1

0 1

6 0

0 0

1 0

0 0

0 1

>10. 00 0

0 0

Total 2

3 0

0 0

4 0

2 2

2 6

2 4

3 30 Hours of Calm...

Hours of Variable Direction Hours Hours Hours of of in Valid Data.

Missing Data Period..........

0 0

30 3

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 Elevations::

Winds 35ft based on Lapse Rate Stability 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5

<0.50 0

0 0

1 1

1 0

0 1

2 0

0 0

0 00 2

0 1

12 1

0 0

00 2

1 0

01 1

2 0

Speed 1.6-2.0 1

0 1

0 01 1

2 3

41 1

1 4

6 1

Range (m/s) 2.1-3.0 4

1 2

7 61 1

4 8

5 4

6 8

9 8

12 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 11 5

16 6

12 0

3 3

12 6

1 2

2 7

16 12 19 11 4

0 0

0 2

7 5

5 4

3 8

6 7

14 5

6 4

0 0

0 2

6 7

8 3

1 17 3

13 10 10 2

5 0

0 0

0 3

11 6

2 0

13 5

3 7

4 3

2 0

0 0

1 0

12 3

0 0

6 4

0 0

>10. 00 0

0 0

0 6

2 4

1 0

0 0

0 Total 55 30 37 15 18 2

11 27 66 40 19 14 56 39 57 56 Tot 0

8 12 27 86 114 95 85 67 35 13 542 Hours of Calm...

Hours of Variable Direction Hours of Hours of Hours in Valid Data Missing Data Period.........

0 0

542 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 0

0 0

0 11 0

3 0

0 0

2 2

0 2

4 3

1 2

0 2

1 0

1 3

10 7

4 2

4 4

3 2

1 Speed 1.6-2.0 1

2 5

8 1

0 0

9 10 2

6 3

10 7

4 1

Range (m/s) 2.1-3.1-3.0 4.0 5

10 3

2 10 6

17 2

11 4

5 6

12 8

38 15 20 28 12 15 6

9 11 10 27 36 15 9

19 18 12 26 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 17 5

1 0

0 4

8 14 36 10 13 4

29 6

11 12 8

2 1

0 0

0 3

14 39 4

2 3

15 2

3 7

3 4

2 0

0 0

1 16 34 13 4

1 7

1 10 8

1 1

0 0

00 1

1 23 4

2 0

0 0

1 7

41

>10. 00 0

5 0

0 0

0 2

1 0

0 0

0 Total 48 25 27 31 16 16 36 119 201 65 46 40 131 44 70 75 Tot Hours Hours Hours Hours Hours of of of of in 0

22 46 69 223 Calm.............

0 Variable Direction 0

Valid Data.

990 Missing Data 3

Period......

2208 204 170 103 104 8

990 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind Sp 0.5-1.1-1.0 1.5 eed Range (m/s) 1.6-2.1-2.0 3.0

<0.50 0

0 0

0 3

0 0

1 0

0 6

2 1

2 3

0 2

1 0

0 2

3 6

10 7

4 4

6 4

0 6

3 1

0 0

0 5

5 0

11 13 11 5

6 4

2 2

2 0

0 1

8 8

26 18 6

14 5

5 5

1 0

3.1-4.0 2

0 0

4 11 2

7 4

5 2

0 1

0 0

4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

0 2

2 5

01 1

0 0

3 1

0 0

4 0

0 0

1 0

0 0

0

>10. 00 0

0 0

0 Total 6

2 2

1 8

20 36 54 51 27 32 21 15 8

11 6

Tot 0

23 57 67 99 38 11 1

0 0

300 Hours of Calm...........

Hours of Variable Direction Hours of Valid Data.

Hours of Missing Data.

Hours in Period.........

1 0

301 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 0

0 2

0 0

0 4

2 31 1

2 2

3 4

4 4

0 0

0 3

4 4

3 1

4 2

2 5

15 0

0 0

0 2

3 2

1 0

2 2

0 0

2 2

Range (m/s) 2.1-3.1-3.0 4.0 0

0 0

0 2

0 1

2 4

0 3

0 1

0 10 1

0 1

0 0

4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

>10. 00 0

0 0

0 Total 2

0 0

0 7

11 13 10 6

7 17 8

9 5

11 2

Tot Hours Hours Hours Hours Hours of of of of in 1

32 34 16 21 Calm.............

0 Variable Direction 0

Valid Data.

108 Missing Data.

3 Period......

2208 4

0 0

108 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

2 0

0 0

2 1

0 0

1 0

0 0

0 1

0 0

0 11 1

0 0

00 0

2 1

0 1

0 0

1 0

Range (m/s) 2.1-3.1-3.0 4.0 2

0 0

1 0

0 1

3 0

2 0

1 2

3 0

2 7

7 7

4 1

0 0

5 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 11 0

2 0

0 5

3 51 1

4 2

5 2

1 3

0 0

01 1

4 2

4 3

1 4

2 1

2 0

0 0

2 2

10 7

3 6

3 4

0 0

0 2

2 0

3 8

2 3

>10. 00 0

0 0

0 5

0 0

0 Total 10 3

1 7

2 1

11 11 24 16 15 28 25 26 8

10 Tot Hours of Hours of Hours of Hours of Hours in 3

8 23 39 33 26 39 20 5

198 Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 0

198 2

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 0

0 1

0 0

1 0

0 0

1 Range (m/s) 2.1-3.0 0

0 0

1 0

0 0

0 1

3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 0

0 1

1 0

0 0

01 1

0 00 0

0 1

5 0

1 0

0 0

2 0

0 0

1 0

0 0

1 5

1 0

0 0

0 1

11 1

01 0

00 1

0 0

0 01 1

3 0

0 1

0 0

0 7

0 0

0 4

2 0

0 0

6

>10. 00 1

0 0

0 1

1 0

0 3

Total 3

1 2

1 0

0 0

5 3

9 3

2 4

1 0

2 36 Hours of Calm...

Hours of Variable Direction Hours Hours Hours of of in Valid Data.

Missing Data.

Period.........

0 0

36 2

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Tot Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 0

0 1

0 0

0 Range (m/s) 2.1-3.0 0

0 0

1 0

0 0

1 1

0 0

1 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 0

0 0

1 0

0 1

0 0

0 3

11 0

0 0

0 01 00 2

0 5

0 2

1 0

0 0

1 0

0 1

0 0

5 0

0 0

1 0

0 0

0 2

1 4

0 0

0 1

0 0

3 2

0 1

7

>10. 00 0

0 0

Total 1

3 1

0 0

4 0

1 3

2 5

3 4

3 30 1

4 Hours of Calm...

Hours of Variable Direction Hours of Valid Data.

Hours of Missing Data Hours in Period..........

0 0

30 2

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 Elevations::

Winds 150ft based on Lapse Rate Stability 150ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 2

0 0

2 0

0 0

01 1

0 1

0 2

0 0

1 0

2 00 0

1 0

1 2

0 0

0 1

0 0

0 3

0 0

3 3

0 Range (m/s) 2.1-3.1-3.0 4.0 4

5 2

1 0

2 1

7 1

4 0

2 1

1 2

2 6

12 7

6 4

0 2

2 2

6 6

7 6

8 5

6 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 10 6

9 4

14 1

1 2

3 s

1 0

5 3

9 8

20 10 9

0 1

0 3

6 3

3 4

3 5

6 6

9 10 10 4

2 0

0 2

9 9

12 8

3 14 12 16 15 5

5 4

0 0

1 9

3 2

0 8

s s

2

>10. 00 2

1 5

0 0

2 10 11 5

0 5

7 0

1 Total 57 37 35 17 22 3

10 26 54 47 27 10 46 49 55 48 Tot 0

7 9

14 49 71 81 88 126 49 49 543 Hours of Calm...........

Hours of Variable Direction Hours of Valid Data Hours of Missing Data Hours in Period.........

0 0

543 2

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 0

0 01 1

1 1

01 1

1 0

0 02 0

0 3

3 00 21 1

2 0

0 0

1 2

2 3

1 4

2 2

0 Range (m/s) 2.1-3.1-3.0 4.0 2

4 4

1 5

4 16 15 2

8 1

2 1

6 3

9 12 23 10 13 4

6 2

5 8

27 5

6 1

16 1

8 4.1-5.1-6.1 5.0 6.0 8.0 10 2

5 4

5 3

6 16 25 16 10 2

14 8

12 14 12 3

3 1

1 4

11 12 18 19 5

9 22 16 18 28 14 4

0 0

0 4

5 16 60 23 17 6

41 10 3

14 8.1-10.0 1

3 1

0 0

12 29 18 4

4 9

2 9

8

>10. 00 0

8 3

0 0

0 1

0 29 12 3

0 1

0 3

8 Total 46 27 22 39 18 15 31 69 199 115 52 29 129 52 65 82 Tot 5

13 23 77 153 152 182 217 100 68 990 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period...

0 0

990 2

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 1

0 0

1 2

0 0

1 2

0 2

0 0

0 01 1

0 0

2 0

0 1

01 1

33 1

1 Range (m/s) 2.1-3.0 1

2 1

0 0

3 7

3 5

9 4

4 9

4 2

1 3.1-4.1-5.1-6.1-8.1-4.0 5.0 6.0 8.0 10.0 0

0 0

3 12 11 6

14 4

12 5

6 2

3 11 0

0 0

2 7

13 8

15 11 6

4 0

3 0

1 1

0 0

0 1

10 7

4 7

5 13 1

2 0

0 0

8 6

5 2

4 3

0 1

0 0

0

>10. 00 0

0 0

1 0

0 0

0 Total 3

4 5

2 0

12 44 41 29 47 30 29 24 15 10 6

Tot 0

Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period..........

7 15 55 78 71 43 29 0

0 301 2

2208 1

301 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 2

0 0

2 1

0 1

0 0

1 1

0 00 1

0 2

1 8

0 0

0 1

0 0

0 1

0 0

01 1

3 0

1 Range (m/s) 2.1-3.1-3.0 4.0 0

0 0

0 1

0 0

1 5

6 6

5 3

0 2

6 1

1 5

5 2

2 0

3 0

0 0

0 3

2 2

1 0

2 1

1 2

0 0

0 1

0 0

1 5

3 0

0 0

0 2

0 0

2 0

0 0

0 4

4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

>10. 00 0

0 0

0 Total 1

2 1

1 1

1 17 15 6

4 13 10 9

14 8

5 Tot 8

32 30 14 10 0

108 Hours of Calm...........

Hours of Variable Direction Hours Hours Hours of of in Valid Data Missing Data.

Period.........

0 0

108 2

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.5.0 1.0 1.5 Speed 1.6-2.0 0

0 0

0 2

2 0

0 1

10 1

3 0

2 0

0 0

2 3

1 1

2 2

1 4

3 1

0 1

4 5

3 2

2 2

3 7

1 0

1 1

3 14 1

6 0

3 3

Range (m/s) 2.1-3.1-3.0 4.0 7

11 2

4 2

3 8

29 2

3 2

4 3

1 10 12 7

21 10 15 14 14 13 15 12 29 18 12 14 19 9

12 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 10 11 10 26 13 3

5 21 26 19 17 22 23 22 16 12 20 12 22 2

5 4

13 25 36 33 31 13 29 17 36 27 325 50 26 9

2 7

5 24 67 82 77 48 31 58 36 36 52 16 8

6 0

2 5

9 18 74 28 18 9

62 26 22 22

>10. 00 12 18 7

0 0

0 2

11 97 38 12 3

25 19 6

13 Total 131 86 64 76 36 26 59 170 352 222 160 108 248 155 157 155 Tot Hours Hours Hours Hours Hours of of of of in 0

17 34 38 133 Calm.............

0 Variable Direction 0

Valid Data.

2205 Missing Data 3

Period......

2208 204 256 610 325 263 2205 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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 Range (m/s) 2.1-3.0 0

0 0

1 0

2 3

0 1

0 0

1 0

0 0

0 1

0 0

1 10 0

0 01 0

0 0

3.1-4.0 1

00 3

0 0

1 2

0 0

2 1

2 2

0 2

4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

21 1

0 00 2

0 1

0 2

2 21 1

1 0

0 0

0 2

2 0

0 2

3 0

1 1

0 0

3 0

41 1

1 02 0

0 0

0 1

0 01 1

1 0

0 4

>10. 00 0

0 0

0 3

4 0

0 Total 3

41 5

0 0

5 7

7 2

5 6

10 14 4

5 Tot 2

5 16 15 12 14 7

78 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

78 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

1 0

0 0

1 0

0 11 Range (m/s) 2.1-3.1-3.0 4.0 0

0 0

1 0

0 0

2 0

0 1

3 0

1 2

2 0

0 0

1 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

1 0

0 0

21 1

0 2

1 10 1

2 0

0 0

1 2

3 21 1

2 0

1 0

0 1

0 0

0 3

8 2

1 2

0 0

1 41 1

4 2

2 2

>10. 00 0

0 0

0 1

3 1

0 3

1 0

0 Total 2

1 0

3 0

0 1

9 16 14 4

11 11 8

4 5

Tot 0

3 14 10 15 17 17 9

89 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

89 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 Range (m/s) 2.1-3.1-3.0 4.0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

1 0

0 0

0 1

0 0

1 0

0 0

3 1

2 0

0 7

0 0

1 1

0 0

0 11 1

0 03 0

0 0

0 1

0 0

1 0

0 0

2 0

0 1

0 2

1 0

8 0

0 0

0 1

2 0

0 0

0 1

1 0

0 00 0

22 3

2 1

21 1

1 0

0 0

1 0

1 14 1

0 8

>10. 00 0

0 0

01 1

0 0

1 2

0 0

Total 1

2 1

1 1

0 0

4 8

6 S

8 9

11 3

1 Tot 1

3 8

4 17 5

61 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period..........

0 0

61 3

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 Elevations::

Winds 300ft based on Lapse Rate Stability 300ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

0 1

0 0

0 1

0 0

3 0

0 0

1 2

1 1

00 1

0 0

2 2

0 0

1 1

01 0

11 2

2 0

0 0

0 1

0 3

0 1

2 Range (m/s) 2.1-3.1-3.0 4.0 5

7 2

2 0

1 6

15 1

2 0

1 1

0 5

1 5

13 4

6 7

5 3

3 3

8 7

3 7

11 7

7 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 6

3 5

21 11 0

0 7

10 6

1 5

6 6

6 5

12 12 19 2

5 2

3 6

7 8

5 2

7 4

14 13 38 21 8

1 2

0 3

16 14 20 13 7

15 15 14 33 220 11 5

6 0

0 0

1 8

22 11 8

2 21 12 14 16 137

>10. 00 12 18 7

0 0

0 2

4 52 25 7

0 8

12 5

13 Total 93 66 48 47 22 4

10 49 129 80 47 23 72 59 74 98 Tot 8

10 14 63 85 98 121 165 921 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data.

Period.........

0 0

921 3

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 Elevations::

Winds 300ft Stabi based on Lapse Rate lity 300ft Wind Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

1 0

0 0

0 1

0 0

1 0

0 0

2 1

1 1

1 0

1 10 0

1 0

1 3

0 0

1 0

0 1

1 0

1 01 0

Range (m/s) 2.1-3.0 1

0 2

0 0

1 1

3 7

2 6

4 5

2 3.1-4.1-5.1-6.1-8.1 4.0 5.0 6.0 8.0 10.0 11 1

81 1

0 0

2 6

2 5

13 4

5 1

2 3

3 3

1 0

2 3

4 10 11 8

13 8

5 4

3 0

2 0

0 1

4 11 18 14 7

1 13 9

14 11 8

0 11 55 12 28 38 37 15 7

37 17 20 13 5

2 0

0 2

4 7

8 46 10 9

4 34 6

4 4

>10. 00 0

0 0

7 42 7

4 3

10 0

1 0

Total 22 6

12 16 10 13 28 59 152 89 56 30 128 48 57 35 Tot 3

10 10 36 51 80 108 244 145 74 761 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 0

761 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-1.0 1.5 Speed 1.6-2.0

<0.50 0

0 0

0 1

0 0

0 1

0 0

1 3

0 0

0 1

0 2

0 0

0 1

0 0

5 0

0 0

1 1

0 0

1 1

0 10 0

0 0

0 Range (m/s) 2.1-3.1-3.0 4.0 1

1 0

0 0

0 1

1 1

0 1

1 0

0 2

5 0

1 3

0 0

2 3

3 0

1 1

3 0

0 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 2

2 1

0 0

3 1

5 6

1 3

4 1

3 2

0 2

0 1

0 0

1 3

2 3

8 10 3

6 2

3 1

2 2

0 0

6 14 15 11 14 13 4

1 0

0 0

1 0

0 01 1

2 4

1 0

01 1

0 0

>10. 00 0

0 0

0 1

2 0

0 0

0 Total 8

5 2

4 38 33 31 26 31 26 13 10 9

2 Tot 0

5 14 19 34 45 82 12 3

222 Hours Hours Hours Hours Hours of of of of in Calm...

Variable Direction Valid Data.

Missing Data.

Period..........

0 0

222 3

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 Direction Sector N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Wind 0.5-1.1-

<0.50 1.0 1.5 Speed 1.6-2.0 0

0 0

11 0

0 0

0 2

0 0

2 3

1 0

0 0

0 Range (m/s) 2.1-3.1-3.0 4.0 0

1 0

0 0

1 0

0 0

1 1

2 0

0 0

3 0

0 1

1 2

0 1

0 0

1 4.1-5.1-6.1-8.1-5.0 6.0 8.0 10.0 0

0 0

0 2

2 3

0 2

0 0

01 1

0 0

2 2

2 1

5 4

1 0

1 2

0 0

0 4

1 3

2 0

0 0

1 5

0 0

0 1

0 0

1 0

2

>10. 00 0

0 0

0 Total 2

2 0

0 0

1 4

9 9

5 12 4

5 5

6 9

Tot 6

5 11 11 20 16 0

73 Hours Hours Hours Hours Hours of of of of in Calm...........

Variable Direction Valid Data.

Missing Data Period.........

0 0

73 3

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 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 E.

Carbon-14

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 SEMI-ELEVATED RELEASES ELEVATED RELEASES CORRECTED PAGE OF 2010 REPORT xx CONTINUOUS MODE Nuclides Released I Unit Il Quarter 2id Quarter 3rd 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 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 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 Sr-89 Ci 5.02E-05 2.94E-06 4.26E-05 2.24E-06 9.80E-05 Sr-90 Ci

<LLD

<LLD Cr-51 Ci

<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 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 Ag-110m Ci

<LLD

<LLD 5.16E-06

<LLD 5.16E-06 Cs-134 Ci

<LLD

<LLD Cs-137 Ci

<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 Ce-144 Ci

<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)

Page 121 of 121

SVPLTR 12-0222, Annual Radioactive Effluent Release Report

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