Text

2006 Annual Radioactive Effluent Release Report
	ML071210133
Person / Time
Site:	Dresden
Issue date:	04/27/2007
From:	; Exelon Nuclear
To:	; NRC/FSME
References
	FOIA/PA-2010-0209
	Download: ML071210133 (83)
	v • d • e

DRESDEN NUCLEAR POWER STATION 2006 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 Ulnits 1,2,3 Licensee: Fxelon Nuclear

1.

Regulatory Limits

a.

Fission and activation gases:

Dnse Rate

1)

Less than 500 mrem/year to the whole body.

2)

Less than 3000 mrem/year to the skin.

Dosee Clamma Radiation (each unit)

1)

Less than or equal to 5 mrad/quarter.

2)

Less than or equal to 10 mrad/year.

Beta Radiation (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

1)

Less than 1500 mrem/year.

Dose (each uni)

1)

Less than or equal to 7.5 mremlquarter 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.

2.

Maximum Permissible Concentration a., b., c. For fission and activation gases, iodines, and particulates with half-lives greater than 8 days, allowable dose rates are calculated by solving equations 10-1 and 10-2 from the Offsite Dose Calculation Manual (ODCM).

d.

For liquid effluents, allowable release limits are calculated by solving equations 10-3 and 10-4 from the ODCM.

3.

Average Energy Average energy is not used to determine dose to the public. The ODCM limits the dose equivalent rates due to the release of noble gases to less than or equal to 500 mrem per year to the total body and less than or equal to 3,000 mrem per year to the skin. Compliance with these limits is demonstrated based on dose calculations using measured isotopic concentrations of effluent streams and not based on gross count rate measuring systems. Therefore, the average beta and gamma energies (E) for gaseous effluents as described in Regulatory Guide 1.2 1, "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.

Page 1 of 83

DRESDEN NUCLEAR POWER STATION 2006 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 IInits 1,2,3 Licensee: Exelon Nuclear

4.

Measurement and Approximations of Total Radioactivity

a.

Fission and Activation Gases:

b.

Iodines:

c.

Particulates:

The Units 2/3 and Unit 1 Chimneys, Units 2/3 Reactor Building Vent, and Chemical Cleaning Building effluents are continually 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 Chimneys and Vent are obtained weekly and analyzed by gamma spectroscopy. Contributing streams of the Units 2/3 Chimney and 2/3 Reactor Building Vent are also sampled and analyzed by gamma spectroscopy. Tritium samples of the Chimneys and Vent are obtained monthly and analyzed by liquid scintillation.

For the Units 2/3 Chimney and Units 2/3 Reactor Building Vent effluents, the measured flow at the release points is used to calculate the curies released. For the Unit 1 Chimney and Chemical Cleaning Building effluents, the design basis flows are used to calculate curies released.

d.

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 sampling period. 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.

e.

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.

f.

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.

g.

Estimation of Data/Corrections:

The Units 2/3 Main Chimney particulate and iodine sampling and noble gas monitoring were interrupted from 1056 on October 26, 2006 until 1400 on October 27, 2006. Radioactive noble gases measured at the monitor are determined to be less than detectable based on measurements for the current month and the previous three months. The particulate and iodine activities are determined by averaging the measured concentrations for the balance of the month and applying these averages to the time period that sampling was interrupted.

Page 2 of 83

DRESDEN NUCLEAR POWER STATION 2006 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 1,7,3 Licensee: Exelon Nuclear

5.

Batch Releases (does not include Abnormal / Unmonitored Releases, described below)

a.

Liquid - Radwaste Liquid Effluents

1. Number of batch releases:

29

2.

Total time period for batch releases:

9.30E+03 minutes

3.

Maximum time period for a batch release:

4.22E+02 minutes

4.

Average time period for a batch release:

3.21E+02 minutes

5.

Minimum time period for a batch release:

7.50E+01 minutes

6.

Average stream flow during periods of release of effluent into a flowing stream:

b.

Liquid - Low Pressure Coolant Injection (LPCI) Cooling

1. Number of batch releases:

60

2.

Total time period for batch releases:

7.44E+01 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:

1.5 lE+05 1pm 9.46E+04 ipm

c.

Gaseous - None

6.

Abnormal Releases*

a.

Liquid

1. Number of releases:

1

2.

Total activity released:

1.35E-01 Ci

b.

Gaseous

1. Number of releases:

1

2.

Total activity released:

2.92E-03 Ci

a. 1 In January 2006, samples drawn from shallow monitoring well E-3 located near the 2/3 'B' Condensate Storage Tank indicated the presence of leakage in the contaminated 2/3 Condensate Storage System. This leakage was likely contained by remediation efforts (excavation of the leak site and containment of the dirt and groundwater),

but to be conservative the leakage is assumed to have entered the site storm sewer system and was released to the environment via the Unit 1 Intake canal. Trending data of the well indicated the leak started no earlier than November 1, 2005, which is used as the leak start date. A leak rate of 1.1 8E+02 mllmin is estimated to have existed from November 1, 2005 until February 15, 2006, when the leak rate dropped to 5.OOE-02 ml/min as the result of isolating the majority of the leak. The leak was stopped on April 8, 2006 when the remaining packing leakage was contained. The tritium concentration of the 2/3 Condensate Storage Tank was used to calculate the released activity. No gamma emitting activity was detected in the groundwater, so the gamma emitting activity is determined to be mechanically filtered by the soil surrounding the leak, which was controlled and disposed of as radioactive, and not released to the environment. An estimated 1.35E-0 1 Ci of tritium was released during the period from November 1, 2005 until April 8, 2006.

b. 1 An unplanned actuation of the Unit 2 Isolation Condenser occurred at 0300 on July 4, 2006, due to a reactor scram and Group I isolation. Recently, tritium was detected on the shell side of the condenser / heat exchanger, which vents directly to the atmosphere. As a result, actuation of this system prompts sampling and isotopic analysis of the shell side contents and the downspouts from roofs under the exhaust. The highest concentration of tritium detected was in the shell side of the isolation condenser prior to actuation, and this maximum concentration was used for release calculations. No other nuclides were detected. Volume of the release was based on makeup pump run times and changes in shell-side level. For this event, an estimated total activity of 2.92E-03 Ci of tritium was released to the environment.

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

Page 3 of 83

DRESDEN NUCLEAR POWER STATION 2006 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

7.

Unmonitored Releases*

a.

Liquid

1. Number of releases:

1

2. Total activity released:

1.04E+00 Ci

b.

Gaseous

1. Number of releases:

4

2. Total activity released:

1.92E-04 Ci

a. 1 Water in on-site storm sewers is routinely sampled and analyzed for tritium content. The highest storm drain concentrations measured during each calendar quarter of 2006 was used to calculate the released activity for each quarter. The total activity released is based on an estimated typical discharge flow of 10 gallons per minute. An estimated 1.04E+00 Ci of tritium was released to the environment during 2006.

b. 1 The Unit 1 Main Turbine Floor (MTF) 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 MTF, the potential exists for airborne activity to be released to the environment through various potential release points. The estimated release through these points is 3.60E-05 Ci of Cs-137 during 2006.

b.2 The Chemistry Laboratory Ventilation system exhausts directly into the environment and is not monitored. The estimated activity released to the environment in 2006 is 7.47E-05 Ci of noble gases and 8.1 IE-06 Ci of iodines and particulates.

b.3 The Unit 2/3 Heating Steam system has low-level contamination present. During operation of the system, some steam is vented directly into the environment. It is estimated that 2.55E-07 Ci of Mn-54 and 6.59E-07 Ci of Co-60 were released for a total estimated activity of 9.14E-07 Ci released to the environment from this system during 2006.

b.4 A planned actuation of the Unit 3 Isolation Condenser occurred November 24, 2006 for surveillance testing. In the past, low-level contamination was introduced into the shell side of the condenser / heat exchanger, which vents directly to the atmosphere. As a result, actuation of this system prompts sampling and isotopic analysis of the shell side contents and the downspouts from roofs under the exhaust. Tritium and Co-60 were detected, and the maximum concentrations measured surrounding the testing were used for release calculations. No other nuclides were detected. Volume of the release was based on changes in shell-side level. For this event, a calculated 6.50E-05 Ci of tritium and 7.09E-06 Ci of Co-60 were released for a calculated total activity of 7.2 IE-05 Ci released to the environment.

8.

Summary of Offsite Dose Calculation Manual (ODCM) Changes by Dresden Nuclear Power Station (DNPS) in 2006 Chapter 10 of the DNPS ODCM was revised in March of 2006. The revision changes the ODCM description of the Units 2/3 Waste Surge Tank to allow the use of portable waste treatment system tanks to provide input to the Units 2/3 Waste Surge Tank. This change was made to allow the use of portable systems to treat groundwater for liquid discharge via the normal monitored liquid release path.

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

Page 4 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES DOCKET NUMBERS: 50-010/50-237/50-249 i

xst I

2nd 3rd 4

IEst. Total Units Quarter Quarter Quarter Quarter Error, %

A.

Fission & activation gases

1.

Total release Ci 8.35E+00 7.71E+00 6.59E+01 1.77E+02 1.24E+O1

2.

Average release rate for period luCi/sec 1.07E+00 9.8 1E-01 8.29E+00 2.23E+01

3.

Percent of Technical specification limit B.

lodines

1.

Total iodine-131 Ci 6.80E-05 1.15E-04 1.57E-04 1.64E-04 3.08E+O1

2.

Average release rate for period (1-131) itCi/sec 8.74E-06 1.46E-05 1.97E-05 2.06E-05

3.

Percent of technical specification limit C.

Particulates

1.

Particulates with half-lives > 8 days Ci 3.74E-04 2.04E-04 7.19E-04 1.86E-03 2.80E+01

2.

Average release rate for period uCi/sec 4.8 1E-05 2.59E-05 9.04E-05 2.34E-04

3.

Percent of technical specification limit

4.

Gross alpha radioactivity Ci

<LLD

<LLD D.

Tritium

1.

Total release Ci 4.43E+00 4.91E+00 1.04E+O01 3.16E+00 7.55E+00 I--

2.

Average release rate for period

3.

Percent nf technical *nanificatinn I.imit 1-lpCi/sec 01-5.70E-01 6.25E-01

-I-1.3 IE+00 3.97E-0 1

-ill

Applicable limits have been removed from the Technical Specifications. The comparison to ODCM limits is contained in the Radiological Impact on Man section of the report. Total airborne release data are provided which include fission and activation gases, iodines, particulates, and tritium.

Page 5 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 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 1tCi/cc 1.00E-04 1.00E-04 1.00E-04 1.00E-04 1.00E-04 1.00E-04 RCi/cc 1.00E-12 1.00E-10 gCi/cc 1.00E-11 1.00E-1I 1.00E-11 1.00E-1I 1.00E-1I 1.00E-1I 1.00E-1I 1.00E-11 1.00E-11 1.00E-I1 1.00E-11 1.00E-I 1 gjCi/cc 1.OOE-06 1.00E-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 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 UNIT I MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBER: 50-010 GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES ELEVATED RELEASES YX CONTINUOUS MODE NUCLIDES RELEASED UNIT Ist QTR 2nd QTR 3d QTR 4(h QTR TOTAL FISSION 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 Xe-135m Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD TOTAL Ci

<LLD

<LLD IODINES 1-131 Ci

<LLD

<LLD 1-133 Ci

<LLD

<LLD 1-135 Ci

<LLD

<LLD TOTAL Ci

<LLD

<LLD PARTICULATES Fe-55 Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Cr-51 Ci

<LLD

<LLD Mn-54 Ci 4.42E-06 3.83E-07 5.49E-07 1.24E-06 6.59E-06 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD Fe-59 Ci

<LLD

<LLD Co-60 Ci 9.25E-07 7.79E-07 1.OIE-06 8.95E-07 3.61 E-06 Zn-65 Ci

<LLD

<LLD Sr-85 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ag-110m Ci

<LLD

<LLD Sn-113 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Sb-125 Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LWD

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Ba-133 Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD TOTAL Ci 5.35E-06 I. 16E-06 I.56E-06 2.14E-06 1.02E-05 Page 7 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 UNIT 1 MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBER: 50-010 GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES ELEVATED RELEASES xx BATCH MODE________

NUCLIDES RELEASED UNIT I~ QTR 2n QTR 3rd QTR 4 th QTR TOTAL FISSION GASES Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-133mn Ci Xe-135 Ci Xe-135mn Ci Xe-138 Ci TOTAL Ci None None None None None IODINES 1-131 Ci 1-133 Ci 1-135 Ci TOTAL Ci None None None None None PARTICULATES Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Sr-85 Ci Zr-95 Ci Mo-99 Ci Ru-103 Ci Ag-Il 1m Ci Sn-I 13 Ci Sb-124 Ci Sb-125 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-133 Ci Ba-140 Ci Ce-141 Ci Ce-14 Ci TOTAL Ci None None None None None Page 8 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 UNITS 2/3 REACTOR BUILDING VENT GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 xx GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES ELEVATED RELEASES CONTINUOUS MODE NUCLIDES RELEASED UNIT Ist QTR 2*" QTR 3' QTR 4eh QTR TOTAL FISSION 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 1.73E+01 1.73E+01 Xe-133m Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-135m Ci

<LLD

<LLD Xe-138 Ci

<LLD

<LLD TOTAL Ci

<LLD

<LLD 1.73E+01 1.73E+01 IODINES 1-131 Ci

<LLD

<LLD 1.08E-05 1.08E-05 1-133 Ci

<LLD

<LLD 1-135 Ci

<LLD

<LLD TOTAL Ci

<LLD

<LLD 1.08E-05 1.08E-05 PARTICULATES Fe-55 Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD Cr-51 Ci 5.OOE-06

<LLD

<LLD 2.57E-05 3.07E-05 Mn-54 Ci 7.188E-05 1.20E-05 7.48E-06 6.57E-05 1.57E-04 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD 6.17E-07 6.17E-07 Fe-59 Ci

<LLD

<LLD 1.34E-05 1.34E-05 Co-60 Ci 3.37E-05 7.37E-06 2.55E-05 4.9 1E-05 1.16E-04 Zn-65 Ci

<LLD

<LLD 1.46E-05 1.46E-05 Sr-85 Ci

<LLD

<LLD Nb-95 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ag-I 10m Ci

<LLD

<LLD Sn-113 Ci

<LLD

<LLD Sn-117m Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Ba-133 Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD Hg-203 Ci

<LLD

<LLD TOTAL Ci

1. 11 E-04 1.94E-05 3.30E-05 1.69E-04 3.32E-04 Page 9 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 UNITS 2/3 REACTOR BUILDING VENT GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 xx GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES ELEVATED RELEASES BATCH MODE___

NUCLIDES RELEASED UNIT It QTR 2" QTR 3td QTR 4 th QTR TOTAL FISSION GASES Ar-41 Ci Kr-85 Ci Kr-85m Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-133mn Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci TOTAL Ci None None None None None IODINES 1-131 Ci 1-133 Ci 1-135 Ci TOTAL Ci None None None None None PARTICULATES Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-5 I Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Sr-85 Ci Zr-95 Ci Mo-99 Ci Ru-103 Ci Ag-II0m Ci Sn-113 Ci Sb-124 Ci Sb-125 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-133 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci TOTAL Ci None None None None None Page 10 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 UNITS 2/3 MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES ELEVATED RELEASES xx CONTINUOUS MODE NUCLIDES RELEASED UNIT

!st QTR 2n' QTR 3' QTR 4th QTR TOTAL FISSION GASES Ar-41 Ci 2.42E-01 2.08E-01 2.OOE+01 3.66E+01 5.71E+01 Kr-85 Ci

<LLD

<LLD Kr-85m Ci 1.76E-01 9.49E-02 3.33E+00 9.57E+00 1.32E+01 Kr-87 Ci 2.90E-01 2.83E-01 7.19E+00 2.30E+01 3.07E+01 Kr-88 Ci 2.28E-01 1.97E-01 8.86E+00 2.80E+01 3.73E+01 Xe-131m Ci

<LLD

<LLD Xe-133 Ci 4.56E-01 2.85E-01 2.04E+00 4.20E+00 6.98E+00 Xe-133m Ci

<LLD

<LLD 1.32E-01 3.02E-0I 4.34E-01 Xe-135 Ci 1.14E+00 8.07E-01 1.72E+01 4.98E+01 6.90E+01 Xe-135m Ci 1.19E+00 1.20E+00 1.54E+00 1.98E+00 5.90E+00 Xe-138 Ci 4.63E+00 4.64E+00 5.58E+00 6.41E+00 2.13E+01 TOTAL Ci 8.35E+00 7.71 E+00 6.59E+01 1.60E+02 2.42E+02 IODINES 1-131 Ci 6.80E-05 1.15E-04 1.57E-04 1.53E-04 4.93E-04 1-133 Ci 3.03E-04 4.59E-04 8.33E-04 5.83E-04 2.18E-03 1-135 Ci 2.81 E-06

<LLD

<LLD 2.81E-06 TOTAL Ci 3.74E-04 5.74E-04 9.90E-04 7.36E-04 2.67E-03 PARTICULATES Fe-55 Ci

<LLD

<LLD Sr-89 Ci 1.11 E-04 4.88E-06

<LLD 3.63E-05 1.52E-04 Sr-90 Ci

<LLD

<LLD Cr-51 Ci

<LLD

<LLD Mn-54 Ci 2.50E-05 2.35E-05

1. 11E-04 4.94E-04 6.53E-04 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD 1.55E-05 5.95E-05 7.50E-05 Fe-59 Ci

<LLD

<LLD 1.34E-04 1.34E-04 Co-60 Ci 4.04E-05 5.75E-05 2.19E-04 5.99E-04 9.16E-04 Zn-65 Ci

<LLD 2.31E-06 9.72E-05 1.56E-04 2.56E-04 Sr-85 Ci

<LLD

<LLD Y-88 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD Mo-99 Ci

<LLD 1.18E-05 8.96E-05 7.19E-05 1.73E-04 Ru-103 Ci

<LLD

<LLD Ag-110m Ci

<LLD

<LLD 1.73E-05 7.74E-06 2.50E-05 Sn-113 Ci

<LLD

<LLD Sn-117m Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Ba-140 Ci 8.20E-05 8.23E-05 1.34E-04 7.82E-05 3.76E-04 Hg-203 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD TOTAL Ci 2.58E-04 1.82E-04 6.84E-04 1.64E-03 2.76E-03 Page 11 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 UNITS 2/3 MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES ELEVATED RELEASES xx BATCH MODE NUCLIDES RELEASED UNIT I"t QTR 2nsd QTR 3 d QTR 41h QTR TOTAL FISSION 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-135mn Ci Xe-138 Ci TOTAL Ci None None None None None IODINES 1-131 Ci 1-133 Ci 1-135 Ci TOTAL Ci None None None None None PARTICULATES Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci_____

Zn-65 Ci_____

Sr-85 Ci Zr-95 Ci Mo-99 Ci Ru-103 Ci Az-I I Om Ci Sn-113 Ci Sb-124 Ci Sb-125 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-133 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci TOTAL Ci None None None None None Page 12 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 CHEMICAL CLEANING BUILDING GASEOUS EFFLUENTS DOCKET NUMBERS: 50-010/50-237/50-249 xx GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES ELEVATED RELEASES CONTINUOUS MODE NUCLIDES RELEASED UNIT 1st QTR 2"' QTR 3rd QTR 4"h QTR TOTAL FISSION 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 Ci None None None None None IODINES 1-131 Ci

<LLD

<LLD 1-133 Ci

<LLD

<LLD 1-135 Ci

<LLD

<LLD TOTAL Ci

<LLD

<LLD 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 1.42E-07

<LLD

<LLD 1.42E-07 Co-57 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD Fe-59 Ci

<LLD

<LLD Co-60 Ci 2.72E-07 9.67E-07 6.48E-07

<LLD 1.90E-06 Zn-65 Ci

<LLD

<LLD Sr-85 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ag-10m Ci

<LLD

<LLD Sn-113 Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Sb-125 Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Ba-133 Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD Ce-144 Ci

<LLD

<LLD TOTAL Ci 2.72E-07 1.12E-06 6.48E-07

<LLD 2.04E-06 Page 13 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 CHEMICAL CLEANING BUILDING GASEOUS EFFLUENTS DOCKET NUMBERS: 50-010/50-237/50-249 xx GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES ELEVATED RELEASES BATCH MODE NUCLIDES RELEASED UNIT V~ QTR 2n~'

QTR 3Wd QTR 4th QTR TOTAL FISSION GASES Ar-41 Ci Kr-85 Ci Kr-85mn Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-135m Ci Xe-138 Ci TOTAL Ci None None None None None IODINES 1-131 Ci 1-133 Ci 14135 Ci TOTAL Ci None None None None None PARTICULATES Fe-55 Ci Sr-89 Ci Sr-90 Ci Cr-51 Ci Mn-54 Ci Co-57 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci Sr-85 Ci Zr-95 Ci Mo-99 Ci Ru-103 Ci Ag-I10m Ci Sn-I 113 Ci Sb-124 Ci Sb-125 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Ba-133 Ci Ba-140 Ci Ce-141 Ci Ce-144 Ci TOTAL Ci None None None None None Page 14 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES DOCKET NUMBERS: 50-010/50-237/50-249 Units 1

2nd 3rd e4 Est. Total Quarter Quarter Quarter Quarter Error, %

A.

Fission and activation products

1.

Total release (not including H-3, gases, alpha)

Ci 2.42E-03 1.63E-03 1.92E-02 8.1OE-03 1.83E+01

2.

Average diluted concentration during period gCi/mi] 2.38E-08 2.52E-09 6.40E-08 2.16E-08

3.

Percent of applicable limit B.

Tritium

1. Total release Ci 4.72E+00 2.96E+00 5.74E-01 2.78E+00 2.37E+00

2.

Average diluted concentration during period aCi/ml 4.64E-05 4.57E-06 1.92E-06 7.44E-06

3.

Percent of applicable limit C.

Dissolved and entrained gases

1.

Total release Ci

<LLD

<LLD 2.03E+01

2.

Average diluted concentration during period mCi/ml

<LLD

3.

Percent of applicable limit D.

Gross alpha activity F-1.

Total release Ci

<LLD

<LLD 2.00E+0l E.

Volume of waste released (prior to dilution)

Liters 6.75E+05 3.91E+06 1.63E+06 2.23E+06 1.00E+00 F.

Volume of dilution water used during period Liters 1.01E+08 6.43E+08 2.98E+08 3.72E+08 5.OOE+00

Applicable limits have been removed from the Technical Specifications. The comparison to ODCM limits is contained in the Radiological Impact on Man section of the report. Total liquid release data are provided which include fission and activation products, tritium, and dissolved and entrained gases.

Page 15 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 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 Kr-87 Kr-88 Xe-133 Xe-133m Xe-135 Xe-138

2.

IODINES 1-131

3.

PARTICULATES Fe-55 Sr-89 Sr-90 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Mo-99 Cs-134 Cs-137 Ce-141 Ce-144 jiCi/ml 1.00E-05 1.00E-05 1.001E-05 1.00E-05 1.00E-05 1.00E-05 paCi/ml 1.00E-06 jtCi/ml 1.001E-06 5.OOE-08 5.00E-08 5.OOE-07 5.OOE-07 5.OOE-07 5.OOE-07 5.OOE-07 5.OOE-07 5.OOE-07 5.OOE-07 5.OOE-07 5.OOE-06

4.

OTHER jtCi/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 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 RADWASTE LIQUID EFFLUENTS DOCKET NUMBERS: 50-010/50-237/50-249 BATCH MODE Unit I"t fliirter 2 nd Quairt~r I'd Aii'rtepr 4Ath l tr Tntn1 Fe-55 Ci

<LLD

<LLD 6.35E+03 9.62E+02 7.3 1E+03 Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD 1-131 Ci

<LLD

<LLD 1-132 Ci

<LLD

<LLD 1-133 Ci

<LLD

<LLD 1-134 Ci

<LLD

<LLD 1-135 Ci

<LLD

<LLD Cr-51 Ci

<LLD

<LLD 7.15E-04 7.15E-04 Mn-54 Ci 9.16E-04 3.50E-04 1.76E-03 1.95E-03 4.98E-03 Co-58 Ci

<LLD

<LLD 1.21E-04 1.21E-04 Fe-59 Ci 1.61E-05

<LLD

<LLD 7.78E-04 7.94E-04 Co-60 Ci 1.1OE-03 1.15E-03 1.04E-02 1.90E-03 1.46E-02 Zn-65 Ci 4.41E-05 1.64E-05

<LLD 1.34E-03 1.40E-03 As-76 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD Sr-91 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD Ag-110m Ci 3.26E-04 1.04E-05 1.63E-04 1.68E-04 6.68E-04 Sb-124 Ci

<LLD

<LLD 5.80E+01 5.80E+01 Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci 1.02E-05 1.08E-04 4.86E-04 9.96E-05 7.04E-04 Ba-139 Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD La-140 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD (above)

Ci 2.42E-03 1.63E-03 1.92E-02 8.1OE-03 3.13E-02 Total H-3 Ci 3.68E+00 2.92E+00 5.21E-01 2.73E+00 9.85E+00 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 Xe-138 Ci

<LLD

<LLD Page 17 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 RADWASTE LIQUID EFFLUENTS DOCKET NUMBERS: 50-010/50-237/50-249 CONTINTTOTTIS MODE

tth flIrfrtp Tntnl1 Fe-55 Ci Sr-89 Ci sr-90 Ci 1-131 Ci 1-132 Ci 1-133 Ci 1-134 Ci 1-135 Ci Cr-Si Ci Mn-54 Ci Co-5 8 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci As-76 Ci Zr-95 Ci Sr-91 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Ag-lIl1m Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Cs-138 Ci Ba-140 Ci La-140 Ci Ce-141 ai (above)

Ci None None None None None Total H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-133m Ci Xe-135 Ci Xe-138 Ci Page 18 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 UNITS 2/3 LPCI COOLING SYSTEM LIQUID EFFLUENTS DOCKET NUMBERS: 50-237/50-249

'BATCH MODE T Tnit 1 't Ointo nd Oliirtpr

'Ard fu~r~

,4 th rtor Tntal Fe-55 Ci

<LLD

<LLD Sr-89 Ci

<LLD

<LLD Sr-90 Ci

<LLD

<LLD 1-131 Ci

<LLD

<LLD 1-132 Ci

<LLD

<LLD 1-133 Ci

<LLD

<zLLD

<LLD

<LLD 1-134 Ci

<LLD

<LLD 1-135 Ci

<LLD

<LLD Cr-S1 Ci

<LLD

<LLD Mn-54 Ci

<LLD

<LLD Co-58 Ci

<LLD

<LLD Fe-59 Ci

<LLD

<LLD Co-60 Ci

<LLD

<LLD Zn-65 Ci

<LLD

<LLD As-76 Ci

<LLD

<LLD Zr-95 Ci

<LLD

<LLD Sr-91 Ci

<LLD

<LLD Mo-99 Ci

<LLD

<LLD Tc-99m Ci

<LLD

<LLD Ru-103 Ci

<LLD

<LLD A2-10m Ci

<LLD

<LLD Sb-124 Ci

<LLD

<LLD Cs-134 Ci

<LLD

<LLD Cs-136 Ci

<LLD

<LLD Cs-137 Ci

<LLD

<LLD Ba-139 Ci

<LLD

<LLD Ba-140 Ci

<LLD

<LLD La-140 Ci

<LLD

<LLD Ce-141 Ci

<LLD

<LLD NC-239 Ci

<LLD

<LLD (above)

Ci

<LLD

<LLD Total Ci

_<LLD

<LL__LD<LDLL H-3 Ci

<LLD

<LLD Kr-87 Ci

<LLD

<LLD Kr-88 Ci

<LLD

<LLD Xe-133 Ci

<LLD

<LLD Xe-135 Ci

<LLD

<LLD Xe-T13 Ci

<LLD

<LLD Xe-138 Ci

<L LL LD<LD

<LLD Page 19 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 UNITS 2/3 LPCI SYSTEM EFFLUENTS DOCKET NUMBERS: 50-237/50-249 C'ONT1NT TOT S MODE St

~~ndrdU I Tnit I stOnarter 2

Ouanrter

_3r Onarter 4 th 0irte-r Total Fe-55 Ci Sr-89 Ci Sr-90 Ci 1-131 Ci 1-132 1

Ci 1-133 Ci 1-134 Ci 1-135 Ci Cr-51 Ci Mn-54 Ci Co-58 Ci Fe-59 Ci Co-60 Ci Zn-65 Ci As-76 Ci Zr-95 Ci Sr-91 Ci Mo-99 Ci Tc-99m Ci Ru-103 Ci Aa-I IOm Ci Sb-124 Ci Cs-134 Ci Cs-136 Ci Cs-137 Ci Cs-138 Ci Ba-140 Ci La-140 Ci Ce-141 Ci Np-39 Ci (above)

Ci None None None None None Total H-3 Ci Kr-87 Ci Kr-88 Ci Xe-133 Ci Xe-135 Ci Xe-13 CI______

Page 20 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 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 1.60E+02 2.50E+01 bottoms, etc.

Ci 1.08E+03

b.

Dry compressible waste, contaminated equipment, etc.

m3 1.52E+03 2.50E+O 1 (includes some contaminated liquids)

Ci 1.43E+00

c.

Irradiated components, control rods, etc.

m3 4.91E+00 2.50E+OI Ci 3.62E+04

d.

Other (describe) - Contaminated Oil, Contaminated m3 8.79E+02 2.50E+01 Soil, Waste Metals, Combined Packages Ci 7.4 1E+01

2.

Estimate of Major (i.e., Ž>1%) Nuclide Composition (by type of waste)

a.

Spent resins, filters / filter sludges, evaporator bottoms, etc.

Percent %curies Fe-55 4.78E+01 5.16E+02 Co-60 2.58E+01 2.79E+02 Mn-54 1.72E+01 1.86E+02 Zn-65 4.20E+00 4.57E+01 Cs-137 2.1OE+00 2.24E+01 Shipment type: LSA, Type A, Type B Solidification agent or absorbent: None

b.

Dry compressible waste, contaminated equipment, etc.

Percent %

0ries Co-60 3.55E+01 5.09E-01 Mn-54 3.55E+01 5.08E-01 H-3 1.1 IE+01 1.59E-01 Fe-55 8.50E+00 1.22E-01 Fe-59 2.70E+00 3.86E-02 Shipment type: LSA Solidification agent or absorbent: None

c.

Irradiated components, control rods, etc.

percent%

Curies Fe-55 5.77E+O1 2.09E+04 Co-60 3.67E+01 1.33E+04 Ni-63 3.27E+00 1.18E+03 Mn-54 1.96E+00 7.09E+02 Shipment type: Type B Solidification agent or absorbent: None Page 21 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 EFFLUENT AND WASTE DISPOSAL

SUMMARY

ANNUAL REPORT 2006 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS

2.

Estimate of Major (i.e., Ž:1%) Nuclide Composition (by type of waste) - Continued

d.

Other - Contaminated Oil, Contaminated Soil, Waste Metals, Combined Packages Pfr.nt %cues Ni-59 2.98E+O1 2.21E+01 Fe-55 2.36E+O1 1.75E+01 Mn-54 1.54E+01 1.14E+0l Cs-137 1.52E+01 1.13E+0l Co-60 8.35E+00 6.19E+00 Shipment type: Limited Quantity, LSA Solidification agent or absorbent: None

3.

Solid Waste Disposition Number of Shipments, 69 24 19 11 6

5 Mode of Transportation Motor freight (exclusive use only)

Motor freight (exclusive use only)

Destination Energy Solutions - Gallaher Road, Kingston, TN Energy Solutions - Bear Creek Road, Oak Ridge, TN Energy Solutions - Envirocare, Clive, UT Alaron, Wampum, PA Studsvik Processing Facility, Erwin, TN CNS Inc., Barnwell, SC B.

IRRADIATED FUEL SHIPMENTS (Disposition)

Nunher of Shipments None Mode of Transportation (NA)

De-tinatinn (NA)

C.

CHANGES TO THE PROCESS CONTROL PROGRAM (PCP)

The station Process Control Program was not changed during 2006.

Page 22 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 RADIOLOGICAL IMPACT ON MAN*

A. UNIT I Docket Number: 50-010

1.

Airborne Releases Quarterly Limit Maximum Doses from Airborne Releases 1't OTR 2nd OTR 3rd OTR 4 th OTR Yearly Limit Annual Dose Gamma Air (mrad) 5.0 mrad 0.00E+00(e) 0.00E+00(e) 0.00E+00(e)

O.00E+00(e) 10.0 mrad 0.00E+00 (e)

Beta Air (mrad) 10.0 mrad 0.OOE+00(e) 0.OOE+00(e) 0.OOE+00(e) 0.OOE+00(e) 20.0 mrad 0.OOE+00 (e)

Total Body (mrem) 2.5 mrem 0.OOE+00(e) 0.OOE+00(e) 0.OOE+00(e) 0.OOE+00(e) 5.0 mrem 0.OOE+00 (e)

Skin (mrem) 7.5 mrem 0.00E+00(e) 0.OOE+00(e) 0.OOE+00(e) 0.OOE+00(e) 15.0 mrem 0.OOE+00 (e)

Organ (mrem) 7.5 mrem 2.17E-06(c) 6.17E-06(t) 4,8 1E-06(c) 7.84E-04(i,c) 15.0 mrem 7.94E-04 (c)

Critical Organ Lung GI LLI GI LLI Liver (i)

Liver Bone (c)

Quarterly Percentage of Quarterlv Limit Yearly Percentage of Limit _

st OTR 2 nd OTR 3 rd OTR 4 th OTR Limit Annual Limit Gamma Air 5.0 mrad 0.OOE+00 0.00E+00 0.OOE+00 0.OOE+00 10.0 mrad 0.OOE+00 Beta Air 10.0 mrad 0.OOE+00 0.00E+00 0.OOE+00 0.OOE+00 20.0 mrad 0.OOE+00 Total Body 2.5 mrem 0.OOE+00 0.OOE+00 0.OOE+00 0.00E+00 5.0 mrem 0.00E+00 Skin 7.5 mrem 0.OOE+00 0.00E+00 0.OOE+00 0.00E+00 15.0 mrem 0.OOE+00 Organ 7.5 mrem 2.89E-05 8.23E-05 6.41E-05 1.05E-02 15.0 mrem 5.29E-03

2.

Liquid Releases Quarterly Maximum Doses from Liquid Releases Yearly Limit 1st OTR 2nd OTR 3 r OTR 4 OTR Limit Annalos Total Body (mrem) 1.5 mrem None None None None 3.0 mrem None Organ (mrem) 5.0 mremj None None None None 10.0 mrem None Critical Organ None None None None None Quarterly Percentage of Quarterly Limit Yearly Percentage of Limit _

Ist OTR 2 nd OTR 3r' OTR 4 th QTR Limit Annual Limit Total Body 1.5 mrem 0.0OE+00 0.00E+00 0.OOE+00 0.OOE+00 3.0 mrem 0.OOE+00 Or an 5.0 mrem 0.00'E+00 0.00E+00 0.00E+00 0.OOE+00 10.0 mrem 0.OOE+00

3.

Direct Radiation The maximum calculated direct radiation exposure to a member of the public due to Unit 1 turbine building skyshine was 0 mrem during 2006 (Unit 1 is permanently shutdown).

4.

Total Dose Assessment The maximum calculated Total Effective Dose Equivalent exposure to a member of the public as the result of Unit 1 operations during 2006 is 7.87E-04 mrem. The maximum calculated Committed Effective Dose Equivalent exposure to a member of the public as the result of Unit 1 operations during 2006 is 1.01E-05 mrem.

The doses reported include abnormal and unmonitored releases. These doses are the highest among the four analyzed receptors as described in parentheses [(i)=infant, (c)=child, (t)=teenager, (a)=adult, (e)=every receptor has the same value].

Page 23 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 RADIOLOGICAL IMPACT ON MAN*

B. UNIT 2 Docket Number: 50-237

1.

Airborne Releases r

r Quarterly Limit Maximum Doses from Airborne Releases nd rd Yearly Limit 1 st OTR

_n OTR 3 rd OTR 4 th OTR Annual Dose Gamma Air (mrad) 5.0 mrad 5.86E-05 (e) 6.OOE-05 (e) 1.50E-03 (e) 3.8 IE-03 (e) 10.0 mrad 5.43E-03 (e)

Beta Air (mrad) 10.0 mrad 3.67E-06 (e) 3.68E-06 (e) 1.02E-04 (e) 5.34E-04 (e) 20.0 mrad 6.38E-04 (e)

Total Body (mrem) 2.5 mrem 4.42E-05 (e) 4.53E-05 (e) 1.78E-03 (e) 5.36E-03 (e) 5.0 mrem 7.2 1E-03 (e)

Skin (mrem) 7.5 mrem 4.84E-05 (e) 4.96E-05 (e) 1.25E-03 (e) 3.26E-03 (e) 15.0 mrem 4.6 1E-03 (e)

Organ (mrem) 7.5 mrem 4.79E-04 (a) I 3.94E-03 (c) 8.32E-03 (c) 1.52E-03 (c) 15.0 mrem 1.42E-02 (c)

Critical Organ GI LLI Thyroid Thyroid Thyroid Thyroid Quarterly Percentage of Quarterly Limit Yearly Percentage of Limit Ist OTR 2 nd OTR 3rd OTR 4tth QTR Limit Annual Limit Gamma Air 5.0 mrad 1.17E-03 1.20E-03 3.OOE-02 7.62E-02 10.0 mrad 5.43E-02 Beta Air 10.0 mrad 3.67E-05 3.68E-05 1.02E-03 5.34E-03 20.0 mrad 3.19E-03 Total Body 2.5 mrem 1.77E-03 1.81E-03 7.12E-02 2.14E-01 5.0 mrem 1.44E-01 Skin 7.5 mrem 6.45E-04 6.6 1E-04 1.67E-02 4.35E-02 15.0 mrem 3.07E-02 Organ 7.5 mrem 6.39E-03 5.25E-02 1.1 IE-01 2.03E-02 15.0 mrem 9.47E-02

2.

Liquid Releases Quarterly Maximum Doses from Liquid Releases Yearly Annual Dose Limit Ist OTR 2 nd OTR 3rd OTR 4th OTR Limit AnnuaDos Total Body (mrem) 1.5 mrem 1.36E-05 (c) 2.52E-05 (a) 8.40E-05 (a) 4.53E-05 (a) 3.0 mrem 1.66E-04 (a)

Or an (mrem) 5.0 mremr 1.97E-05 (a) 3.60E-05 (c) 1.30E-04 (t) 8.29E-05 (a) 10.0 mrem 2.60E-04 (a)

Critical Organ GI LLI Liver Liver Liver Liver Quarterly Percentage of,uarterly Limit Yearly Percentage of Limit Ist OTR 2nd OTR 3 rd OTR 4th OTR Limit Annual Limit Total Body 1.5 mrem 9.07E-04 E1.68E-03 5.60E-03 3.02E-03 3.0 mrem 5.53E-03 Or an 5.0 mrem 3.94E-04 7.20E-04 I 2.60E-03 1.66E-03 10.0 mrem 2.60E-03

3.

Direct Radiation The calculated direct radiation exposure to a member of the public due to Unit 2 turbine building skyshine was 4.14E+00 mrem during 2006.

4.

Total Dose Assessment The maximum calculated Total Effective Dose Equivalent exposure to a member of the public as the result of Unit 2 operations during 2006 is 4.15E+00 mrem. The maximum calculated Committed Effective Dose Equivalent exposure to a member of the public as the result of Unit 2 operations during 2006 is 5.63E-03 mrem.

The doses reported include abnormal and unmonitored releases. These doses are the highest among the four analyzed receptors as described in parentheses [(i)=infant, (c)=child, (t)=teenager, (a)=adult, (e)=every receptor has the same value].

Page 24 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 RADIOLOGICAL IMPACT ON MAN*

DOCKET NUMBER: 50-249 C. UNIT 3

1.

Airborne Releases Quarterly 1,init AX,-i fn sa fn-i A;A rbrn Pl.u1--

nd CITR rd th Yearly Limit 1 st OTR

,.)rid NTR qrO NTR 4-m *TR Annual Dose Gamma Air (mrad) 5.0 mrad

1. 14E-04 (e) 1.08E-04 (e) 1.08E-04 (e) 1.12E-04 (e) 10.0 mrad 4.43E-04 (e)

Beta Air (mrad) 10.0 mrad 7.33E-06 (e) 6.67E-06 (e) 6.38E-06 (e) 6.17E-06 (e) 20.0 mrad 2.66E-05 (e)

Total Body (mrem) 2.5 mrem 8.63E-05 (e) 8.14E-05 (e) 8.18E-05 (e) 8.45E-05 (e) 5.0 mrem 3.34E-04 (e)

Skin (mrem) 1 7.5 mrem 9.45E-05 (e) 8.90E-05 (e) 8.92E-05 (e) 9.20E-05 (e) 15.0 mrem 3.65E-04 (e)

Organ (mrem) 7.5 mrem 5.18E-04 (a) 3.34E-03 (c) 7.36E-03 (c) 1.44E-03 (c) 15.0 mrem 1.25E-02 (c)

Critical Organ GI LLI Thyroid Thyroid Thyroid Thyroid Quarterly Percentage of Quarterly Limit Yearly Percentage of Limit 1st OTR 2n'OTR 3 rd OTR 4th OTR Limit Annual Limit Gamma Air 5.0 mrad 2.28E-03 2.16E-03 2.16E-03 2.24E-03 10.0 mrad 4.43E-03 Beta Air 10.0 mrad 7.33E-05 6.67E-05 6.38E-05 6.17E-05 20.0 mrad 1.33E-04 Total Body 2.5 mrem 3.45E-03 3.26E-03 3.27E-03 3.38E-03 5.0 mrem 6.68E-03 Skin 7.5 mrem 1.26E-03 1.19E-03 1.19E-03 1.23E-03 15.0 mrem 2.43E-03 Organ 7.5 mrem 6.91E-03 4.45E-02 9.8 lE-02 1.92E-02 15.0 mrem 8.33E-02

2.

Liquid Releases Quarterly Maximum Doses from Liquid Releases Yearly Annual Dose Limit Ist QTR 2nd OTR 3 rd OTR 4th OTR Limit Total Body (mrem) 1.5 mrem 1.45E-05 (c) 2.52E-05 (a) 8.40E-05 (a) 5.03E-05 (a) 3.0 mrem 1.72E-04 (a)

Organ (mrem) 5.0 mrem 2.03E-05 (a) 3.60E-05 (c) 1.30E-04 (t) 8.78E-05 (a) 10.0 mrem 2.66E-04 (a)

Critical Organ GI LLI I

Liver Liver Liver Liver Quarterly Percentage of Ouarterlv Limit Yearly Percentage of Limit -

It OTR 2 nd OTR 3rd OTR 4th OTR Limit Annual Limit Total Body 1.5 mrem 9.67E-04 1.68E-03 5.60E-03 3.35E-03 3.0 mrem 5.73E-03 Organ 5.0 mrem 4.06E-04 7.20E-04 2.60E-03 I.76E-03 10.0 mremr 2.66E-03

3.

Direct Radiation The maximum calculated direct radiation exposure to a member of the public due to Unit 3 turbine building skyshine was 4.08E+00 mrem during 2006.

4.

Total Dose Assessment The maximum calculated Total Effective Dose Equivalent exposure to a member of the public as the result of Unit 3 operations during 2006 is 4.08E+00 mrem. The maximum calculated Committed Effective Dose Equivalent exposure to a member of the public as the result of Unit 3 operations during 2006 is 5.03E-03 mrem.

The doses reported include abnormal and unmonitored releases. These doses are the highest among the four analyzed receptors as described in parentheses [(i)=infant, (c)=child, (t)=teenager, (a)=adult, (e)=every receptor has the same value].

Page 25 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 RADIOLOGICAL IMPACT ON MAN*

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

40CFR190 Compliance The General Electric Morris Operation (GEMO) facility is physically located near Dresden Station and is considered in the evaluation of the uranium fuel cycle on members of the public in the general environment for 40CFR 190 compliance. The sum of the maximum doses from the units at Dresden Station is 8.23E+00 mrem. Per the 2006 GEMO IOCFR72.44(d)(3) report, the maximum dose that could be received from that facility is calculated to be 4.25E-0 1 mrem. A conservative estimate of the maximum dose to a member of the public in the general environment as a result of the uranium fuel cycle in the area surrounding Dresden Station is 8.66E+00 mrem, and the dose limits of 40CFR190 (annual dose equivalent does not exceed 25 millirems to the whole body, 75 millirems to the thyroid, and 25 millirems to any other organ) are not approached or exceeded.

E.

Equipment Out of Service

1.

The Unit 3 Service Water Effluent Radiation Monitor was out of service from 0449 on March 27, 2006 until 1320 on April 26, 2006. The monitor was declared inoperable when the sample pump tripped. The monitor was out of service for greater than 30 days due to difficulty locating the cause of the pump trip. Contingency grab sampling and analysis was performed as required during the monitor's inoperability. This inoperability of greater than 30 days is being reported per Dresden ODCM Section 12.2.A. 1.3.

2.

The Units 2/3 Main Chimney particulate and iodine sampling and noble gas monitoring were interrupted from 1056 on October 26, 2006 until 1400 on October 27, 2006. Primary monitoring equipment was inoperable for a planned surveillance and backup monitoring equipment was left in purge mode due to personnel error, rendering on-line sampling and monitoring inoperable. Contingency sampling was not performed because the station was not aware of the condition. Monitoring was restored immediately upon discovery of the event.

Page 26 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249

1. The following table represents the percentage of valid hours of recoverable meteorological data for 2006:

Percentage of valid parameter hours in 2006 Parameter 1st Quarter 2 nd Quarter 3 rd Quarter 4e Quarter Year 35 ft. Wind Speed 98.4%

100.0%

99.9%

99.3%

99.4%

150 ft. Wind Speed 98.9%

100.0%

99.6%

300 ft. Wind Speed 98.7%

100.0%

99.6%

35 ft. Wind Direction 99.8%

100.0%

99.8%

99.9%

150 ft. Wind Direction 99.8%

100.0%

99.7%

99.9%

300 ft. Wind Direction 99.8%

100.0%

99.3%

99.8%

35 ft. Temperature 99.8%

100.0%

99.8%

99.9%

150-35 ft. delta T 99.8%

100.0%

99.9%

99.5%

99.8%

300-35 ft. delta T 99.8%

100.0%

99.8%

99.9%

2.

Dresden station was able to achieve an average of 99.7% meteorological data recovery for the year. This exceeds the minimum criterion of 90% delineated in Regulatory Guide 1.23.

3. The remaining pages of this report contain the Dresden Station meteorological site quarterly joint-frequency wind rose tables for 2006.

Page 27 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 Stability Class - Extremely Unstable 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE 0

12 17 0

10 0

7 7

2 0

0 0

2 10 1

3 1

0 4

3 2

1 1

0 0

0 4

1 0

0 13 S

SSW SW WSW 5

1 0

3 15 W

4 3

3 4

5 3

4 6

2 3

0 0

2 0

2 3

1 1

3 0

0 0

0 1

0 15 2

10 0

22 0

12 0

32 0

25 0

33 0

0 0

9 5

2 0

30 0

20 0

10 0

12 8

8 WNW 5

18 NW NNW Variable 0

3 20 0

13 17 0

0 0

Total 0

61 120 57 12 3

253 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 28 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 Stability Class - Moderately Unstable 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Wind Speed (in mph) 4-7 8-12 13-18 1-3 0

0 0

19-24 0

0 0

1 0

0 0

2 0

0 0

> 24 Total Total Hours of calm in Hours of missing Hours of missing 0

24 20 12 this stability class:

0 wind measurements in this stabi stability measurements in all s 3

1 60 lity c

.tabili lass:

0 ty classes:

0 Page 29 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Cl Period of Record: January -

March 2006 ass - Slightly Unstable 150Ft-35Ft Winds Measured at 35 Feet Delta-T (F)

Wind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW Wind Speed (in mph) 4-7 8-12 13-18 1-3 0

0 0

19-24

> 24 Total WSW W

0 0

6 2

2 0

0 0

5 2

3 0

2 0

0 0

2 0

0 0

NW NNW Variable Total 2

0 0

0 3

0 0

13 4

7 0

2 0

0 20 25 14 0

62 Hours of calm in this stability class:

Hours of missing wind measurements in this Hours of missing stability measurements in 0stability class:

0 all stability classes:

0 Page 30 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 Stability Class - Neutral 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction Wind Speed (in mph) 4-7 8-12 13-18 1-3 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW 4

26 10 1

20 12 3

14 31 2

9 15 3

21 24 3

19 23 0

0 9

0 0

7 6

1 0

1 1

4 7

13 1

15 11 5

12 15 3

10 14 0

40 0

33 0

57 0

26 0

48 0

52 0

27 0

31 0

36 0

29 0

25 0

37 0

92 0

104 0

87 0

68 3

9 9

1 11 13 10 W

WNW NW NNW Variable Total 2

21 37 20 12 2

26 64 12 4

22 50 11 1

20 42 0

0 0

380 5

0 129 0

0 0

0 22 0

0 33 228 0

792 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0

stability class:

0 all stability classes:

0 Page 31 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 Stability Class - Slightly Stable 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction Wind Speed (in mph) 4-7 8-12 13-18 1-3 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW 10 23 14 15 6

3 6

0 7

8 7

17 0

0 0

0 1

4 4

3 27 22 6

21 16 0

10 24 2

27 36 16 7

19 41 5

15 19 4

12 16 2

3 3

7 7

8 4

3 1

4 1

0 0

0 1

1 1

0 0

1 0

0 0

0 4

0 39 0

32 0

21 0

24 0

53 0

47 0

38 0

82 0

75 0

48 0

36 0

11 0

52 0

73 0

80 0

73 12 31 15 40 14 22 46 11 14 30 17 12 Variable 0

0 344 0

241 0

65 0

0 Total 130 0

784 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 32 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 Stability Class - Moderately Stable 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

3 2

0 1

0 6

2 1

6 0

0 0

0 1

4 0

1 0

9 ESE SE SSE S

0 0

0 2

1 1

0 0

0 4

0 0

10 0

0 0

2 2

6 3

2 0

1 1

SSW SW WSW 7

7 18 0

18 0

26 0

16 W

WNW NW NNW Variable 6

7 4

0 9

2 3

1 7

0 0

9 7

8 0

11 0

0 Total 63 55 0

122 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 33 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction Period of Record: January -

March 2006 Class -

Extremely Stable 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable 0

0 0

2 0

0 1

0 10 1

0 0

0 4

0 Total 8

18 0

0 0

0 26 Hours of calm in this stability class:

0 Hours of missing wind measurements in this stability class:

0 Hours of missing stability measurements in all stability classes:

0 Page 34 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 Stability Class - Extremely Unstable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Wind Speed (in mph) 4-7 8-12 13-18 1-3 0

0 0

19-24 0

0 0

2 0

0 1

2 0

0 0

> 24 Total Total 0

0 9

17 6

8 40 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

4 Page 35 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 Stability Class - Moderately Unstable 300Ft-35Ft Delta-T Winds Measured at 300 Feet (F)

Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

NW 0

0 0

0 1

0 0

4 1

7 0

4 5

3 0

3 2

2 0

0 9

0 11 0

12 Variable 0

0 Total 5

23 22 13 4

67 Hours of calm in this Hours of missing wind stability class:

measurements in this 0stability class:

I all stability classes:

Hours of missing stability measurements in 4

Page 36 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 ass - Slightly Unstable 300Ft-35Ft Delta-T (F)

Stability. Cl Winds Measured at 300 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

0 0

14 0

10 NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

0 0

0 1

0 2

1 1

9 4

2 5

8 8

7 3

0 11 0

7 NW NNW Variable Total 0

0 0

4 2

3 0

5 6

4 0

2 0

0 0

1 12 0

1 0

8 8

0 9

37 41 24 6

117 Hours of calm in this Hours of missing wind stability class:

measurements in this 0stability class:

1 all stability classes:

Hours of missing stability measurements in 4

Page 37 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 ass - Neutral 300Ft-35Ft Delta-T (F)

Stability Cl Winds Measured at 300 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW 5

25 30 5

24 25 6

6 8

17 30 14 2

30 20 6

8 22 24 10 5

9 14 18 2

19 11 15 1

11 23 16 2

12 21 26 0

67 0

60 0

69 0

59 0

64 1

47 0

47 6

57 5

66 3

34 2

38 4

3 5

4 9

12 8

20 7

23 10 8

13 61 W

1 1

7 22 25 23 24 102 3

29 55 40 13 141 WNW NW NNW Variable 1

1 0

4 25 53 30 4

117 9

20 43 29 14 116 0

0 0

0 Total Hours of calm in this Hours of missing wind Hours of missing stabi 8

75 297 stability class:

measurements in this ility measurements in 401 279 85 1145 0stability class:

22 all stability classes:

4 Page 38 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January -

March 2006 ass -

Slightly Stable 300Ft-35Ft Delta-T (F)

Stability Cl Winds Measured at 300 Feet Wind Direction Wind Speed (in mph) 4-7 8-12 13-18 1-3 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

0 0

1 1

1 2

2 3

0 0

1 0

0 3

2 1

0 4

9 12 3

25 11 8

7 2

1 4

6 2

0 6

1 0

0 2

8 16 7

14 10 8

13 27 4

6 3

2 1

3 8

18 16 3

38 18 4

26 18 0

31 0

40 0

15 0

14 0

29 0

34 0

54 8

59 5

67 6

56 1

43 2

21 0

32 0

37 0

58 0

39 5

27 7

4 8

5 1

1 11 19 WNW NW NNW Variable Total 2

8 19 1

19 32 2

18 14 5

4 4

0 102 0

0 0

279 0

0 17 54 155 22 629 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0

stability class:

6 all stability classes:

4 Page 39 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: January - March 2006 Stability Class - Moderately Stable Winds Measured at 3 300Ft-35Ft Delta-T (F) 00 Feet Wind Direction Wind Speed (in mph) 4-7 8-12 13-18 1-3 19-24

> 24 Total N

1 NNE NE ENE E

ESE SE SSE S

SSW SW WSW 0

0 0

0 1

1 0

0 0

2 0

0 0

2 0

3 0

0 1

2 0

0 2

0 1

6 2

1 0

0 11 0

10 0

0 0

2 4

1 2

4 9

1 2

7 4

13 2

13 W

WNW NW NNW Variable Total 4

5 2

0 1

5 3

0 0

1 0

0 0

2 0

17 0

16 0

12 0

0 6

0 5

20 35 54 0

116 Hours of calm in Hours of missing Hours of missing this stability class:

0 wind measurements in this stability class:

0 stability measurements in all stability classes:

4 Page 40 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Period of Record: January -

March 2006 Class -

Extremely Stable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 0

12 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

all stability cl 0

asses:

4 Page 41 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Cla Wind Direction 1

Period of Record: April - June 2006

.ss -

Extremely Unstable 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE 4

30 3

26 2

9 3

47 16 0

26 7

E ESE SE SSE 0

0 0

6 10 0

6 5

7 1

0 2

3 0

2 8

5 4

9 8

2 2

8 0

13 S

1 4

19 3

17 0

0 0

0 2

0 0

2 0

36 0

40 0

69 0

33 0

18 0

13 0

18 0

35 0

29 0

14 0

26 0

22 0

57 0

40 0

37 SSW SW WSW 1

1 1

0 3

8 7

16 W

8 6

WNW 1

10 31 15 1

17 18 NNW Variable Total 1

29 0

0 7

0 179 4

0 0

72 0

0 17 235 0

505 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 42 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: April - June 2006 Stability Class - Moderately Unstable

- 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

4 2

0 0

0 1

0 0

4 3

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable 0

12 0

0 0

0 4

6 7

3 0

10 0

0 0

0 5

3 3

6 0

10 0

0 0

5 5

0 Total 18 36 33 9

0 0

96 Hours of calm in this stability class:

Hours of missing wind measurements in this Hours of missing stability measurements in 0stability class:

0 all stability classes:

0 Page 43 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Cla Period of Record: April -

Ju tss - Slightly Unstable Winds Measured at 35 F ne 2006 150Ft-35Ft Delta-T (F) eet 19-24

> 24 Total Wind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Wind Speed (in mph) 4-7 8-12 13-18 1-3 2

0 1

0 0

0 1

0 0

0 1

4 0

Total 10 36 23 9

0 0

78 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

all stability cl 0

asses:

0 Page 44 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Period of Record: April - June 2006 Class - Neutral 15OFt-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 8

14 50 27 14 4

7 8

6 3

4 14 25 16 10 10 0

1 14 30 8

22 19 12 22 18 14 10 6

13 24 11 0

0 224 0

7 4

1 16 24 12 12 13 3

4 0

7 10 8

0 0

121 0

0 0

9 9

2 6

0 0

1 0

27 11 38 91 39 55 58 42 47 46 22 23 26 47 56 33 20 0

60 220 2

654 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 45 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: April - June 2006 Stability Class - Slightly Stable 150Ft-35Ft Delta-T Winds Measured at 35 Feet (F)

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

24 20 4

7 0

0 2

1 14 21 3

21 7

21 11 3

9 10 4

11 10 1

31 20 10 28 23 0

28 0

37 0

25 0

39 0

23 0

28 0

54 0

65 0

34 0

28 0

11 0

34 0

40 0

45 0

29 8

16 10 13 4

6 9

25 10 21 19 20 15 14 3

3 1

0 9

6 0

0 NW 0

0 0

0 Variable 0

0 0

0 Total 161 268 99 19 1

0 548 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability all stabi class:

0 lity classes:

0 Page 46 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Cla Period of Record: April - June ss - Moderately Stable 1501 Winds Measured at 35 Feet 2006 Ft-35Ft Delta-T (F)

Wind Speed (in mph)

Wind Direction N

NNE NE ENE E

ESE SE 1-3 8

7 2

0 1

1 3

4-7 8-12 13-18 19-24

> 24 Total 2

1 1

0 2

1 8

6 SSE S

SSW SW 4

5 10 0

0 0

0 4

1 0

0 0

5 0

0 0

0 10 0

10 0

0 0

8 3

0 3

2 5

0 15 0

11 0

15 0

23 0

20 0

15 9

14 WSW W

WNW NW NNW Variable Total 11 8

7 27 23 0

126 9

7 2

5 2

0 75 0

9 0

32 0

25 0

0 0

206 Hours of calm in this stability class:

Hours of Hours of missing wind measurements in this missing stability measurements in 0stability class:

0 all stability classes:

0 Page 47 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Cla Period of Record: April - June 2006 Lss -

Extremely Stable 150Ft-35F Winds Measured at 35 Feet t Delta-T (F)

Wind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

Wind Speed (in mph) 4-7 8-12 13-18 1-3 6

0 0

1 0

1 1

0 0

5 2

6 4

5 7

9 0

19-24

> 24 Total WNW NNW Variable Total 47 14 0

0 0

0 61 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 48 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: April - June 2006 Stability Class - Extremely Unstable

- 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total N

0 0

7 NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW 0

10 0

0 0

5 1

1 1

0 0

0 1

0 0

0 3

1 0

1 1

2 0

6 0

0 0

9 3

10 0

0 0

4 3

0 Variable Total 3

15 14 3

44 Hours of calm in this stability class:

Hours of missing wind measurements in this Hours of missing stability measurements in 0stability class:

0 all stability classes:

0 Page 49 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability ClE Period of Record: April - June 2

iss -

Moderately Unstable 300Ft-Winds Measured at 300 Feet 006 35Ft Delta-T (F)

Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE 0

0 0

2 2

ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 4

9 6

2 3

0 0

2 0

3 3

5 0

0 2

2 0

1 0

0 1

0 0

1 2

17 0

15 0

0 0

0 4

3 5

2 0

3 0

0 3

3 0

9 1

10 0

16 2

0 0

4 3

0 2

0 0

9 5

0 Variable 0

Total 0

12 29 34 15 4

94 Hours of calm in this stability class:

Hours of missing wind measurements in this Hours of missing stability measurements in 0stability class:

all stability cl 1

asses:

0 Page 50 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Cla Period of Record: April - June

.ss - Slightly Unstable 300}

Winds Measured at 300 Feet 2006 Ft-35Ft Delta-T (F)

Wind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total 0

12 0

16 0

11 0

1 0

0 2

0 0

7 5

6 5

9 8

2 9

6 NW 0

0 0

0 3

3 4

0 7

6 5

0 1

2 1

0 0

11 0

13 Variable Total 0

0 1

24 50 49 16 3

143 Hours of calm in this Hours of missing wind Hours of missing stab:

stability class:

measurements in this ility measurements in 0stability class:

0 all stability classes:

0 Page 51 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: April - June 2006 Stability Class -

Neutral Winds Measured 300Ft-35Ft Delta-T (F) at 300 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE 0

11 9

5 1

2 10 16 22 10 1

12 39 44 11 0

26 8

68 4

i1 1

64 7

61 0

18 34 9

2 6

E ESE SE SSE 2

0 2

9 27 10 4

3 3

15 24 13 59 8

20 10 13 56 0

12 12 20 11 S

SSW SW WSW W

WNW 3

4 2

3 0

6 17 27 14 5

12 27 6

2 14 5

9 2

5 4

59 7

74 0

53 2

35 1

43 5

54 6

20 11 8

23 13 1

11 21 23 27 10 93 NW NNW Variable Total 6

10 13 21 0

16 0

0 8

0 264 8

0 289 9

3 0

149 7

66 2

37 0

0 26 147 84 959 Hours of calm in this stability class:

0 Hours of missing wind measurements in this stability class:

4 Hours of missing stability measurements in all stability classes:

0 Page 52 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: April - June 2006 Stability Class - Slightly Stable Winds Measured 300Ft-35Ft Delta-T (F) at 300 Feet Wind Direction N

Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total 2

1 6

9 4

8 NNE NE ENE 8

24 2

11 21 10 0

11 14 0

0 1

1 0

7 8

5 9

0 21 0

42 0

45 0

25 2

43 2

36 1

29 1

47 E

ESE SE SSE S

SSW SW WSW W

3 0

1 1

2 2

0 3

1 0

0 0

0 2

19 10 5

3 7

14 7

12 3

12 21 4

11 40 34 10 101 5

7 20 2

12 8

8 6

9 WNW NW NNW Variable Total 4

14 20 4

14 20 0

12 26 4

14 17 4

4 1

0 8

5 0

0 8

46 2

28 0

27 0

39 0

46 0

43 0

35 0

0 0

238 0

0 18 78 206 87 26 653 Hours of calm in this stability class:

Hours of missing wind measurements in this Hours of missing stability measurements in 0

stability class:

3 all stability classes:

0 Page 53 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: April - June 2006 Stability Class - Moderately Stable

- 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

1 NNE NE ENE E

ESE SE SSE S

2 1

0 0

2 0

1 0

0 2

2 1

1 1

2 0

3 4

2 2

1 1

5 2

1 0

1 1

4 1

2 7

7 1

2 1

4 6

8 1

0 1

1 0

2 0

0 0

0 1

1 4

1 2

0 0

5 4

3 8

6 11 6

2 0

8 8

4 0

23 0

18 0

15 0

17 0

23 SSW SW 0

5 2

15 WSW W

WNW NW NNW Variable Total 6

5 5

9 6

4 7

10 0

0 3

0 0

0 14 0

22 0

18 0

16 0

14 0

20 0

31 4

11 14 0

0 0

16 34 72 106 0

242 Hours of calm in this stability class:

Hours of missing wind measurements in this Hours of missing stability measurements in 0stability class:

2 all stability classes:

0 Page 54 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Cla Period of Record: April - June 2006 Lss -

Extremely Stable

- 300Ft-35F Winds Measured at 300 Feet t Delta-T (F)

Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

NW NNW Variable Total 4

6 12 16 1

0 39 Hours of calm in this Hours of missing wind stability class:

measurements in this 0stability class:

0 all stability classes:

Hours of missing stability measurements in 0

Page 55 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July - September 2006 Stability Class - Extremely Unstable

- 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

0 9

3 0

NNE NE ENE 0

12 0

44 0

22 0

26 18 0

17 E

ESE SE SSE S

SSW 7

1 0

3 2

0 0

1 0

4 6

5 1

0 0

1 0

6 9

7 2

5 0

2 0

0 0

8 1

0 5

3 8

SW 0

15 WSW W

0 0

8 2

9 6

WNW 0

13 0

0 Variable 0

0 0

0 15 0

0 Total 0

101 59 10 0

170 Hours of calm in this Hours of missing wind stability class:

measurements in this 0stability class:

all stability cl 0

asses:

Hours of missing stability measurements in 0

Page 56 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July - September 2006 Stability Class - Moderately Unstable

- 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW 0

1 0

0 1

0 0

2 0

0 0

W 1

NW NNW Variable 0

0 0

Total 5

34 19 8

0 0

66 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 57 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July - September 2006 Stability Class - Slightly Unstable 15OFt-35Ft Delta-T Winds Measured at 35 Feet (F)

Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW 3

0 0

1 0

0 0

1 0

0 0

1 0

6 2

7 9

0 4

2 5

3 0

0 2

1 0

2 5

0 0

0 1

1 2

1 0

0 0

0 5

0 0

0 11 0

0 0

5 2

9 9

9 2

9 4

11 0

17 WSW W

WNW NW NNW Variable Total 2

6 3

5 5

2 0

5 4

1 0

0 0

8 0

10 0

0 0

4 5

6 3

0 6

65 33 0

109 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 58 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July -

Stability Class - Neutral Winds Measured at Wind Speed (in Wind Direction 1-3 4-7 8-12 13-N NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 4

4 2

6 2

4 2

3.

7 2

3 1

4 2

5 10 0

3 13 30 27 32 11 10 20 38 20 21 31 29 24 10 24 0

0 0

17 9

8 11 11 18 15 20 22 8

13 12 2

2 0

168 2

September 2006 150Ft-35Ft Delta-T (F) 35 Feet mph) 18 19-24

> 24 Total 0

0 0

7 0

0 0

17 0

0 0

49 0

0 0

42 0

0 0

42 0

0 0

26 3

0 0

26 8

0 0

49 1

0 0

61 4

0 0

46 8

0 0

54 1

0 0

41 1

0 0

47 0

0 0

38 0

0 0

17 0

0 0

36 0

0 0

0 6

61 343 0

0 598 Hours of calm in this stability class:

0 Hours of missing wind measurements in this stability class:

0 Hours of missing stability measurements in all stability classes:

0 Page 59 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July - September 2006 Stability Class - Slightly Stable 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 30 10 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW 14 8

20 76 9

44 14 42 9

26 2

0 5

1 3

7 0

0 0

0 9

20 12 17 58 17 20 52 24 22 49 23 13 37 10 0

0 2

5 0

1 4

1 0

0 0

0 13 0

42 0

22 0

101 0

54 0

59 0

44 0

46 0

92 0

97 0

98 0

61 0

29 0

38 0

45 0

33 0

39 3

18 8

22 10 29 18 15 20 19 8

8 6

0 0

0 126 Variable 0

236 0

525 0

0 Total 0

900 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 60 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July - September 2006 Stability Class - Moderately Stable

- 15OFt-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

8 NNE NE ENE E

ESE SE SSE S

12 0

3 0

0 1

4 8

11 7

18 13 9

4 5

7 11 0

0 0

0 1

0 2

0 1

0 0

4 0

0 0

SSW SW WSW W

WNW NW NNW Variable Total 8

0 12 1

7 8

7 0

20 0

25 0

19 0

14 0

19 0

15 0

48 0

11 0

16 0

13 0

10 20 28 7

14 12 10 8

0 146 4

2 1

0 0

0 96 0

0 8

0 0

246 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 61 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Period of Record: July -

Septembi Class -

Extremely Stable 150]

Winds Measured at 35 Feet Wind Speed (in mph) er 200 Ft-35F

]6 t Delta-T (F)

> 24 Total Wind Direction 1-3 4-7 8-12 13-18 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable 2

4 0

0 0

4 2

6 9

8 20 6

6 6

9 2

0 84 19-24 0

0 0

2 4

0 0

1 4

2 7

10 9

23 6

6 6

9 2

0 Total 7

0 0

91 Hours of calm in Hours of missing Hours of missing this stability class:

0 wind measurements in this stability class:

0 stability measurements in all stability classes:

0 Page 62 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Period of Record: July - September 2006 Class -

Extremely Unstable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Speed (in Wind Direction 1-3 4-7 8-12 13-N NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total mph) 18 1

0 1

0 0

1 0

19-24

> 24 Total 0

0 3

0 0

0 4

0 0

2 0

0 0

0 1

0 0

1 0

0 0

3 0

0 11 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

1 Page 63 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July - September 2006 Stability Class - Moderately Unstable

- 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Direction N

NNE Wind Speed (in mph) 4-7 8-12 13-18 1-3 0

0 19-24

> 24 Total 0

0 1

1 2

4 NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW 0

0 0

0 1

0 0

0 1

0 0

2 0

0 3

5 0

14 Variable Total 5

17 22 0

46 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

I Page 64 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July -

September 2006 Stability Class - Slightly Unstable

- 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total 1

0 2

2 7

0 0

0 3

0 11 0

22 3

13 0

0 0

0 9

4 2

1 6

1 5

9 8

2 0

12 0

0 0

5 4

0 Total 1

16 55 30 2

0 104 Hours of calm in this Hours of missing wind Hours of missing stab:

stability class:

measurements in this ility measurements in 0stability class:

0 all stability classes:

1 Page 65 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July -

September 2006 ass - Neutral 300Ft-35Ft Delta-T (F)

Stability Cl Winds Measured at 300 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 1

0 8

16 9

4 17 11 5

11 32 18 2

32 64 2

11 35 1

13 10 4

9 5

1 5

4 0

0 1

6 1

6 11 10 2

24 23 19 7

2 28 28 14 3

2 17 28 31 9

3 14 22 30 11 1

36 0

37 0

70 0

102 0

57 0

30 1

35 1

76 1

76 0

87 3

83 0

46 0

54 0

58 0

36 0

55 0

22 14 9

2 15 17 15 0

11 27 17 2

13 13 6

1 5

3 2

0 0

58 3

19 13 20 0

0 0

370 0

227 0

0 28 248 7

938 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0

stability class:

0 all stability classes:

1 Page 66 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July -

September 2006 ass - Slightly Stable 300Ft-35Ft Delta-T (F)

Stability Cl Winds Measured at 300 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

1 3

11 6

NNE NE ENE 0

2 15 17 1

10 22 19 1

17 25 1

E 5

5 8

16 0

3 1

1 0

3 3

6 9

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable 2

15 13 8

1 12 27 25 1

12 24 19 2

9 25 43 0

21 0

37 0

53 0

45 0

34 0

41 1

69 0

62 0

88 1

99 1

79 0

38 0

31 0

35 0

20 0

36 1

1 0

2 1

0 0

0 6

33 40 18 6

26 34 11 4

15 18 5

9 13 6

13 12 1

2 3

0 1

0 4

7 9

4 18 13 0

0 0

Total 19 120 291 293 62 3

788 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0

stability class:

all stability cl 0

asses:

1 Page 67 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July -

September 2006 Stability Class - Moderately Stable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Direction N

Wind Speed (in mph) 4-7 8-12 13-18 1-3 0

19-24

> 24 Total 1

5 2

NNE NE ENE E

ESE SE SSE 1

0 0

2 0

1 2

2 1

0 4

4 3

4 5

3 2

2 3

5 0

0 5

0 0

13 0

8 0

0 6

5 9

10 3

8 1

10 8

3 5

7 S

SSW SW WSW 5

5 7

1 7

3 14 1

10 17 0

7 14 W

6 6

7 1

2 0

1 4

1 0

0 0

0 9

0 14 0

25 0

22 0

16 0

14 0

24 0

25 0

34 0

27 0

16 0

17 WNW 0

0 1

0 2

2 3

0 7

3 12 NNW Variable 1

0 2

0 0

0 7

0 Total 11 66 95 92 0

273 Hours of calm in this stability class:

Hours of missing wind measurements in this Hours of missing stability measurements in 0

stability class:

0 all stability classes:

1 Page 68 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: July - September 2006 Stability Class -

Extremely Stable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Direction N

NNE NE ENE E

ESE SE SSE S

Wind Speed (in mph) 4-7 8-12 13-18 1-3 0

0 0

1 1

0 0

0 1

1 1

2 0

0 0

1 0

0 0

1 2

5 4

2 5

3 2

0 0

1 4

1 0

3 2

3 0

0 19-24 0

0 0

> 24 Total 0

0 0

0 1

0 0

1 1

0 1

3 SSW SW WSW W

WNW 0

0 0

1 0

0 0

1 0

10 0

0 0

5 3

9 6

7 0

0 NW NNW Variable Total 7

25 14 0

47 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

1 Page 69 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period of Record: October -

December 2006 Stability Class - Extremely Unstable

- 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Direction N

NNE NE ENE E

ESE SE SSE Wind Speed (in mph) 4-7 8-12 13-18 1-3 0

0 1

0 0

1 3

1 1

0 1

4 0

5 0

2 0

0 2

0 0

19-24 0

0 0

0

> 24 Total 0

0 0

0 5

1 9

1 3

0 1

6 S

SSW SW WSW W

WNW NW 0

0 0

8 13 1

13 0

3 0

1 0

3 3

3 1

0 0

5 2

5 0

0 1

0 0

4 0

0 0

5 0

22 0

15 0

0 0

0 3

5 8

8 0

11 0

10 NNW Variable Total 8

0 2

0 0

0 1

26 50 26 0

108 Hours of Hours of Hours of calm in missing missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 70 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction N

NNE NE ENE E

ESE SE SSE Period of Record: October - December 2006 Class - Moderately Unstable 150Ft-35Ft Delta-T Winds Measured at 35 Feet (F)

Wind Speed (in mph) 4-7 8-12 13-18 1-3 0

0 0

0 19-24

> 24 Total S

SSW SW WSW W

0 0

0 1

0 0

0 1

0 3

1 0

0 0

2 1

0 0

0 1

4 8

1 1

3 2

0 0

0 1

7 0

0 0

1 5

0 0

1 0

0 0

2 0

15 0

0 0

0 2

0 1

0 2

6 0

0 0

0 4

2 4

3 9

4 1

0 NW NNW Variable Total 0

10 27 14 0

53 Hours of Hours of Hours of calm in this stability class:

missing wind measurements in this missing stability measurements in 0stability class:

0 all stability classes:

0 Page 71 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction N

NNE NE ENE E

ESE SE SSE Period of Record: October - December 2006 Class - Slightly Unstable 150Ft-35Ft Delta-T Winds Measured at 35 Feet (F)

Wind Speed (in mph) 4-7 8-12 13-18 1-3 0

0 1

0 0

0 19-24

> 24 Total S

SSW SW WSW W

0 0

0 1

0 0

0 1

0 2

1 2

0 2

0 1

2 2

1 3

2 0

1 0

0 0

1 6

5 3

0 3

4 3

0 0

1 5

1 3

0 0

0 1

0 0

0 1

0 0

0 12 6

1 3

0 2

0 3

7 0

0 0

0 4

4 8

9 7

7 6

0 5

1 1 NW NNW Variable Total 3

2 0

1 1

0 3

22 33 20 0

79 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 72 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction Period of Record: October -

December 2006 Class - Neutral 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph) 1-3 4-7 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable 2

4 3

1 2

2 3

0 0

0 4

2 2

1 7

4 0

9 5

18 14 19 8

16 18 22 10 10 11 17 10 16 26 0

8-12 13-18 18 9

16 12 17 6

4 0

30 2

23 4

8 4

44 6

46 20 23 17 9

12 6

9 59 19 34 8

24 6

53 5

0 0

19-24 0

0 0

2 0

0 1

0 0

0 1

0 0

> 24 0

0 0

Total 38 37 44 19 53 39 31 68 89 50 35 28 98 53 53 88 0

Total 37 229 414 139 4

0 823 Hours of calm in this stability class:

Hours of missing Hours of missing wind measurements in this stability measurements in 0

stability class:

0 all stability classes:

0 Page 73 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction Period of Record: October - December 2006 Class - Slightly Stable 150Ft-35Ft Delta-T Winds Measured at 35 Feet (F)

Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

2 4

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW 4

14 9

6 0

6 6

0 2

8 19 4

20 0

2 2

0 0

4 3

8 0

0 0

6 5

24 15 9

27 26 7

55 52 4

44 56 17 0

26 0

23 0

27 0

26 0

48 0

65 0

122 0

75 0

56 0

30 0

103 0

63 0

43 0

33 6

33 24 1

21 25 5

8 13 6

38 52 8

35 18 12 20 11 9

9 4

7 2

0 1

0 68 5

21 Variable Total 0

0 6

0 312 0

0 95 389 0

868 Hours of calm in this stability class:

Hours of missing wind measurements in this Hours of missing stability measurements in 0stability class:

0 all stability classes:

0 Page 74 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction Period of Record: October -

December 2006 Class, - Moderately Stable 15OFt-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE 3

1 0

1 NE 0

2 0

0 4

0 0

0 ENE E

1 ESE SE SSE S

SSW SW WSW W

WNW NW 2

31 5

10 11 16 2

2 1

3 1

5 3

0 0

0 35 0

17 0

28 0

11 0

20 0

26 0

10 0

0 0

3 3

0 1

5 5

14 1

16 3

1 2

2 1

0 5

6 3

1 1

0 9

2 0

0 0

20 0

0 0

7 5

3 2

0 Variable Total 44 112 0

176 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

0 Page 75 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Period of Record: October -

December 2006 Class -

Extremely Stable 150Ft-35Ft Delta-T (F)

Winds Measured at 35 Feet Wind Speed (in mph) 4-7 8-12 13-18 1-3 1

0 0

1 0

1 2

4 2

4 3

0 2

3 2

0 0

19-24

> 24 Total Total 25 18 1

0 0

0 44 Hours of calm in Hours of missing Hours of missing this stability class:

0 wind measurements in this stability class:

0 stability measurements in all stability classes:

0 Page 76 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction Period of Record: October -

December 2006 Class - Extremely Unstable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 0

0 0

Hours of Hours of Hours of calm in missing missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

5 Page 77 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Period of Record: October - December 2006 Class - Moderately Unstable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Speed (in mph)

Wind Direction 1-3 4-7 8-12 13-18 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Total 5

10 3

20 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0stability class:

0 all stability classes:

5 Page 78 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Variable Period of Record: October -

December 2006 Class - Slightly Unstable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Speed (in mph) 1-3 0

0 0

4-7 8-12 13-18 19-24

> 24 Total 5

10 1

0 0

3 4

0 Total 0

7 20 11 5

9 52 Hours of calm in this Hours of missing wind stability class:

measurements in this 0stability class:

all stability cl 0

asses:

Hours of missing stability measurements in 5

Page 79 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Period Class -

of Record: October -

December 2006 Stability Neutral Winds Measured 300Ft-35Ft Delta-T (F) at 300 Feet Wind Direction Wind Speed (in mph) 1-3 4-7 8-12 13-18 19-24

> 24 Total N

1 5

12 28 10 9

65 NNE NE ENE E

ESE SE SSE 3

0 2

1 0

0 2

0 5

4 6

15 13 18 60 7

18 10 7

18 4

2 11 23 4

7 19 0

6 5

1 40 0

31 1

44 4

39 1

32 0

90 8

ii 6

9 25 49 S

9 39 48 31 10 137 SSW SW WSW 2

13 37 25 17 W

0 1

2 7

15 9

9 7

4 8

13 WNW NW 7

19 45 38 2

16 33 24 7

21 25 17 5

99 4

47 8

38 4

113 6

82 3

75 1

110 0

12 31 38 28 Variable Total 0

0 0

284 0

391 0

227 0

0 15 110 75 1102 Hours of calm in Hours of missing Hours of missing this stability class:

wind measurements in this stability measurements in 0

stability class:

15 all stability classes:

5 Page 80 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction Period of Record: October -

December 2006 Class -

Slightly Stable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Speed (in mph) 8-12 13-18 1-3 4-7 19-24

> 24 Total N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

2 1

0 1

2 3

0 4

1 2

1 1

0 0

1 1

0 0

1 3

7 14 2

1 2

3 8

2 0

2 2

2 0

0 1

3 1

0 7

0 1

9 4

3 10 12 5

13 32 0

13 0

22 0

10 0

31 0

51 3

94 7

22 45 13 5

19 54 48 11 138 2

15 59 22 0

15 14 19 4

20 19 14 6

15 36 23 4

104 3

52 4

62 0

80 0

45 0

44 0

25 3

4 27 11 NW 3

12 25 0

10 12 3

2 0

164 Variable Total 0

0 0

350 0

0 20 50 178 25 787 Hours of calm in this stability class:

0 Hours of missing wind measurements in this stability class:

4 Hours of missing stability measurements in all stability classes:

5 Page 81 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction N

NNE NE ENE E

ESE Period of Record: October -

December 2006 Class - Moderately Stable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Speed (in mph) 1-3 0

0 0

4-7 8-12 13-18 19-24

> 24 Total 0

0 1

0 2

1 4

0 0

1 0

2 4

0 0

1 1

0 0

2 4

1 0

4 2

0 SE SSE S

SSW SW WSW W

WNW NW NNW Variable 6

12 0

11 25 2

3 1

3 2

2 5

3 3

16 8

8 8

2 6

4 3

4 0

0 9

0 23 0

36 0

19 0

16 0

20 0

25 0

0 0

0 2

4 1

0 0

0 6

7 6

0 Total 6

20 53 88 13 0

180 Hours of calm in this stability class:

Hours of missing wind measurements in this Hours of missing stability measurements in 0stability class:

0 all stability classes:

5 Page 82 of 83

DRESDEN NUCLEAR POWER STATION 2006 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT January through December 2006 METEOROLOGICAL DATA DOCKET NUMBERS: 50-010/50-237/50-249 Stability Wind Direction N

NNE NE ENE E

Period of Record: October - December 2006 Class - Extremely Stable 300Ft-35Ft Delta-T (F)

Winds Measured at 300 Feet Wind Speed (in mph) 4-7 8-12 13-18 1-3 1

0 0

0 19-24

> 24 Total ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0

0 0

0 1

1 2

2 0

1 0

8 Variable Total 9

13 6

2 0

38 Hours of calm in this Hours of missing wind stability class:

measurements in this 0stability class:

all stability cl 0

asses:

Hours of missing stability measurements in 5

Page 83 of 83

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