Text

Part 2 of 2, Dresden Nuclear Power Station, Units 1, 2 & 3, Dresden Nuclear Power Station 2001 Radioactive Effluent Release Report & Offsite Dose Calculation Manual Changes, 12.0 Radiological Effluent Technical Standards
	ML020930107
Person / Time
Site:	Dresden
Issue date:	03/29/2002
From:	Swafford P; Exelon Nuclear
To:	; Document Control Desk, NRC/FSME
References
	+kBR1SISP20060530, -RFPFR, FOIA/PA-2006-0130, PSLTR: #02-0021
	Download: ML020930107 (170)
	v • d • e

DRESDEN Revision 1.13 December 2001 12.0 RADIOLOGICAL EFFLUENT TECHNICAL STANDARDS 12.1 DEFINITIONS

1. Channel Calibration - A Channel Calibration shall be the adjustment, as necessary, of the channel output such that it responds within the necessary range and accuracy to known values of the parameter that the channel monitors. The Channel Calibration shall encompass the entire channel, including the required sensor, alarm, display and trip functions, and shall include the Channel Functional Test. Calibration of instrument channels with resistance temperature detector (RTD) or thermocouple sensors may consist of an inplace qualitative assessment of sensor behavior and normal calibration of the remaining adjustable devices in the channel. The Channel Calibration may be performed by means of any series of sequential, overlapping, or total channel steps so that the entire channel is calibrated.

2. Channel Check - A Channel Check shall be a qualitative assessment, by observation, of channel-behavio-rduring operation. This determination shall include, where possible, comparison of the channel indication and status to other indications or status derived from independent instrument channels measuring the same parameter.

3. Channel Functional Test - A Channel Functional Test shall be the injection of a simulated or actual signal into the channel as close to the sensor as practicable to verify Operability, including required alarm, interlock, display, and trip functions, and channel failure trips.

The Channel Functional Test may be performed by means of any series of sequential, overlapping, or total channel steps so that the entire channel is tested.

4. Continuous Sampling - Uninterrupted sampling with the exception of sampling interruptions of short duration (no longer than 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months ) for required surveillances.

5. Dose Equivalent 1-131 - That concentration of 1-131 (microcuries/gram) that alone would produce the same thyroid dose as the quantity and isotopic mixture of I-131, 1-132, 1-133, 1-134, and 1-135 actually present. The thyroid dose conversion factors used for this calculation shall be those listed in Table III of TID -14844, AEC, 1962", Calculation of Distance Factors for Power and Test Reactor Sites"; Table E-7 of Regulatory Guide 1.109, Rev. 1, NRC, 1977; or ICRP 30, Supplement to Part 1, pages 192-212, Table titled, "Committed Dose Equivalent in Target Organs or Tissues per Intake of Unit Activity."

6. Frequency - Table 12.1-1 provides the definitions of various frequencies for which surveillances, sampling, etc., are performed unless defined otherwise. For Unit 1, each surveillance requirement shall be performed within the specified Surveillance Frequency time interval with a maximum allowable extension not to exceed 25% of the Surveillance interval. The Bases to Technical Specification SR 3.0.2 (for Units 2 and 3) provides clarification to this statement. For Units 2 and 3, the provisions of Technical Specifications SR 3.0.2 and SR 3.0.3 are applicable. The 25% Surveillance interval extension and the provisions of SR 3.0.2 and SR 3.0.3 do not apply to the Radiological Environmental-Monitoring -Program (Section I-2-ý5--...... ......

..-.---

-..--...-- - ..--. ..

7. Immediate - Immediate means that the required action should be pursued without delay in a controlled manner.

8. Member of the Public - Member of the Public means any individual except when that individual is receiving an occupational dose.

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DRESDEN Revision 1.13 December 2001 12.1 DEFINITIONS (Cont'd}

9. Mode - A Mode shall correspond to any one inclusive combination of mode switch position, average reactor coolant temperature, and reactor vessel head closure bolt tensioning specified in Table 12.1-2 with fuel in the reactor vessel.

10. Occupational Dose -The dose received by an individual in the course of employment in which the individual's assigned duties involve exposure to radiation and/or to radioactive material from licensed and unlicensed sources of radiation, whether in the possession of the licensee or other person. Occupational dose does not include dose from background radiation, as a patient from medical practices, from voluntary participation in medical research programs, or as a member of the public.

11. The Offsite Dose Calculation Manual (ODCM)

a. The ODCM shall contain the methodology and parameters used in the calculation of offsite doses resulting from radioactive gaseous and liquid effluents, in the calculation of gaseous and liquid effluent monitoring alarm and trip setpoints, and

. in the-conduct-of the Radiological Environmental Monitoring Program.

b. The ODCM shall also contain the radioactive effluent controls and radiological environmental monitoring activities and descriptions of the information that should be included in the Annual Radioactive Effluent Release and Radiological Environmental Operating Reports required by Sections 12.6.2.1 and 12.6.2.2.

12. Operable-Operability - A system, subsystem, division, component, or device shall be Operable or have Operability when it is capable of performing its specified safety function(s) and when all necessary attendant instrumentation, controls, normal or emergency electrical power, cooling and seal water, lubrication and other auxiliary equipment that are required for the system, subsystem, division, component, or device to perform its specified safety function(s) are also capable of performing their related support function(s).

13. The Process Control Program (PCP) - The PCP shall contain the current formulas, sampling, analyses, test, and determinations to be made to ensure that processing and packaging of solid radioactive wastes based on demonstrated processing of actual or simulated wet solid wastes will be accomplished in such a way as to assure compliance with 10 CFR Parts 20, 61, and 71, State regulations, burial ground requirements, and other requirements governing the disposal of solid radioactive waste.

14. Public Dose means the dose received by a member of the public from exposure to radiation or radioactive material released by a licensee, or to any other source of radiation under the control of a licensee. Public dose does not include occupational dose or doses received from background radiation, from any medical administration the individual has received, from exposure to individuals administered radioactive material and released in accordance with 1 OCFR35.75, or from voluntary participation in medical research programs.

.15. Rated Thermal Power (RTP) - Prior to implementation-of ExtendedPower Uprate (EPU),

a unit's RTP shall be a total reactor core heat transfer rate to the reactor coolant of 2527 thermal megawatts. After implementation of EPU, a unit's RTP shall be a total reactor core heat transfer rate to the reactor coolant of 2957 thermal megawatts.

16. Reactor Power Operation - Reactor power operation is any operation with the mode switch in the "Startup/Hot Standby" or "Run" position with the reactor critical and above 1% rated thermal power.

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DRESDEN Revision 1.13 December 2001 I

12.1 DEFINITIONS (Cont'd)

17. Source Check - Source Check is the qualitative assessment of channel response when the channel sensor is exposed to a radioactive source.

18. Definitions Related to Estimating Dose to the Public Using the ODCM Computer Program:

1. Actual - Refers to using known release data to project the dose to the public for the previous month. These data are stored in the database and used to demonstrate compliance with the reporting requirements of Chapter 12.

2. Projected - Refers to using known release data from the previous month or estimated release data to forecast a future dose to the public. These data are NOT incorporated into the database.

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DRESDEN Revision 1.13 December 2001 TABLE 12.1-1 SURVEILLANCE FREQUENCY NOTATION NOTATION FREQUENCY S (Shiftly) At least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months D (Daily) At least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months T At least once per 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months W (Weekly) At least once per 7 days M (Monthly) At least once per 31 days Q (Quarterly)- Atleast onceper 92 days SA (Semiannually) At least once per 184 days A (Annually) At least once per 366 days E (Sesquiannually) At least once per 18 months (550 days)

B (Biennially) At least once per 24 months (731 days)

S/U (Startup) Prior to each reactor startup NA (Not Applicable) Not applicable

'\',0 -

-1.

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DRESDEN Revision 1.13 December 2001 TABLE 12.1-2 MODES MODE TITLE MODE SWITCH AVERAGE REACTOR POSITION COOLANT TEMPERATURE OF 1 POWER OPERATION Run NA 2 STARTUP Refuel(') or Startup/Hot Standby NA 3 HOT SHUTDOWN(a) Shutdown >212 4 COLD SHUTDOWN(a) Shutdown(b) <_212 5 REFUELING(b) Shutdown or Refuel NA TABLE NOTATIONS (a)All reactor vessel head closure bolts fully tensioned.

(b) One or more vessel head closure bolts less than fully tensioned.

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DRESDEN Revision 1.13 December 2001 12.2 INSTRUMENTATION A. Radioactive Liquid Effluent Monitoring Instrumentation

1. Radioactive Liquid Effluent Monitoring Instrumentation Operability

1. The effluent monitoring instrumentation shown in Table 12.2-1 shall be operable with alarm trip setpoints set to insure that the limits of Section 12.3.A are not exceeded. The alarm setpoints shall be determined in accordance with the ODCM.

2. With a radioactive liquid effluent monitoring instrument alarm/trip setpoint less conservative than required, without delay suspend the release of radioactive liquid effluents monitored by the affected instrument, or declare the instrument inoperable, or change the setpoint so it is acceptably conservative.

3. With one or more radioactive liquid effluent monitoring instruments inoperable, take the action shown in Table 12.2-1. Return the instrument to operable status

- within 30 days and, if unsuccessful; explain in the next Radioactive Effluent Release Report why the inoperability was not corrected in a timely manner. This is in lieu of an LER.

4. In the event operability requirements and associated action requirements cannot be satisfied because of circumstances in excess of those addressed in the specifications, provide a 30-day written report to the NRC and no changes are required in the operational condition of the plant, and this does not prevent the plant from entry into any operational mode.

2. Radioactive Liquid Effluent Monitoring Instrumentation Surveillance

1. Each radioactive liquid effluent monitoring instrument shown in Table 12.2-2 shall be demonstrated operable by performance of the given Source Check, Channel Check, Channel Calibration, and Channel Functional Test operations at the frequencies shown in Table 12.2-2.

B. Radioactive Gaseous Effluent Monitoring Instrumentation

1. Radioactive Gaseous Effluent Monitoring Instrumentation Operability

1. The effluent monitoring instrumentation shown in Table 12.2-3 shall be operable with alarm/trip setpoints set to ensure that the limits of Section 12.4.A are not exceeded. The alarm/trip setpoints shall be determined in accordance with the ODCM.

2. With a radioactive gaseous effluent monitoring instruments alarm/trip set point less conservative than required, without delay suspend the release of radioactive gaseous effluents monitored by the affected instrument, or declare the instrument inoperable, or change the setpoint so it is acceptably conservative.

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'1 :

DRESDEN Revision 1.13 December 2001 12.2.B.1 Radioactive Gaseous Effluent Monitoring Instrumentation Operability (Cont'd)

3. With one or more radioactive gaseous effluent monitoring instruments inoperable, take the action shown in Table 12.2-3. Return the instrument to operable status within 30 days and, if unsuccessful, explain in the next Radioactive Effluent Release Report why the inoperability was not corrected in a timely manner. This is in lieu of an LER.

4. The Unit 2/3 plant chimney gas sampling system may be out of service for 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months for the purpose of servicing the high range noble gas monitor as long as the following conditions are satisfied:

1. Both units are at steady state conditions with the recombiners and charcoal absorbers in service for the operating unit(s).

2. The dose rate in unrestricted areas must be shown by calculation to be less than the limits of 12.4.A assuming the charcoal absorbers are bypassed on both units.

3. Both offgas monitors on Unit 2 and Unit 3 must be operational and the monitor reading correlated to the chimney release rate based on the conservative assumption of both units' charcoal absorbers being bypassed.

4. If the provisions of 12.4.A.1.1, 12.4.A.1.2, or 12.4.A.1.3 cannot be met, an orderly load reduction of the unit(s) shall be initiated immediately.

5. In the event operability requirements and associated action requirements cannot be satisfied because of circumstances in excess of those addressed in this Section, provide a 30-day written report to the NRC and no changes are required in the operational condition of the plant, and this does not prevent the plant from entry into any operation mode.

2. Radioactive Gaseous Effluent Monitoring Instrumentation Surveillance Each radioactive gaseous radiation monitoring instrument in Table 12.2-4 shall be demonstrated operable by performance of the given Source Check, Channel Check, I\ik Channel Calibration, and Channel Functional Test operations at the frequency shown in Table 12.2-4.

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DRESDEN Revision 1.13 December 2001 I

TABLE 12.2-1 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION UNITS 2 & 3 Minimum Total Channels No. of Instrument Operable Channels Action Service Water Effluent 10 Gross Activity Monitor

2. Liquid Radwaste Effluent 1 1 11 Gross Activity Monitor(')

ACTIONS ACTION 10 - With less than the minimum number of operable channels, releases via this pathway may continue, provided that at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months grab samples are collected and analyzed for beta or gamma activity at an LLD of less than or equal to 5x10 7 uCi/ml.

(The grab sample should normally be taken at the Service Water Monitor or at a location which would be representative of the Service Water which is monitored.)

ACTION 11 - With less than a minimum number of operable channels, effluent releases via this pathway may continue, provided that prior to initiating a release, at least 2 independent samples are analyzed, and at least 2 members of the facility staff independently verify the release calculation and discharge valving. Otherwise, suspend release of radioactive effluent via this pathway.

Effluent release via this pathway may continue when either

1. The flow through the monitor cannot be established and maintained within design parameters, or

2. Effluent activity is below the range of detection for the monitor.

Provided that prior to initiating a release, at least 2 independent samples are analyzed, and at least 2 members of the facility staff independently verify the release calculations and discharge valving.

Otherwise suspend release of radioactive effluent via this pathway.

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DRESDEN Revision 1.13 December 2001 I

TABLE 12.2-2 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS UNITS 2 & 3 Channel Channel Channel Source Instrument Functional Calibration(b)(f Check(f Check Test(a)(m I,

1. Service Water Effluent Gross Q(e) B(c) D B Activity Monitor

2. Liquid Radwaste Q(e)

Effluent Gross B(c) D B(d)

Activity Monitor dnl2r1-13.doc 12-9

DRESDEN Revision 1.13 December 2001 TABLE 12.2-2 (Cont'd)

RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS TABLE NOTATIONS (a) The Channel Functional Test shall also demonstrate that control room alarm annunciation occurs, if any of the following conditions exist, where applicable.

1. Instrument indicated levels above the alarm setpoint.

2. Circuit failure.

3. Instrument indicates a downscale failure.

4. Instrument controls not set in OPERATE mode.

(b) Channel Calibration shall include performance of a Channel Functional Test. I *'

(c) Channel Calibration shall include performance of a Source Check. j'\

(d) Source Check shall consist of observing instrument response during a discharge. j *\*'

(e) Channel Functional Tests may be performed by using trip check and test circuitry associated with 100 the monitor chassis.

M Channel Functional Tests, Channel Calibrations, and Channel Checks are not required when these I instruments are not required to be operable or are tripped. Channel Calibration is not required to be[

performed more than once every 24 months.

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DRESDEN Revision 1.13 December 2001 I

TABLE 12.2-3 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION UNIT 1 Minimum Total Applicable Channels No. of Operational Instrument Operable Channels Modes Action

1. Main Chimney SPING Noble Gas 1 3 28 Monitor

2. Main Chimney Particulate 1 27 Sampler 1

3. Main Chimney Iodine Sampler 1 27

At all times.

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DRESDEN Revision 1.13 December 2001 TABLE 12.2-3 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION UNITS 2 & 3 Minimum Total Applicable Applicable Operational Channels No. of Operational Modes Instrument Operable Channels Modes Action Main Chimney Noble Gas/SPING/ 1 3 20

.1.

GE Low Range Activity Monitor

2. Main Chimney SPING Noble Gas 1 1 26 Monitors Mid, Hi Range 1 22

3. Main Chimney Iodine Sampler 1

4. Main Chimney Particulate Sampler 1 22 1

5. Main Chimney Flow Rate Monitor 1 21 1

6. Main Chimney Sampler Flow Rate 1 21 Monitor

7. Reactor Building Vent Exhaust See Technical Specification 3.3.6.2 Duct Radiation Monitor

8. Reactor Building Vent SPING 1 1 25 Noble Gas Monitor Low, Mid, High Range

9. Reactor Building Vent Flow 1 1

21 Rate Monitor

21

10. Reactor Building Vent Sampler 1 1 Flow Rate Monitor

1 1 22

11. Reactor Building Vent Iodine Sampler

12. Reactor Building Vent 1 1

22 Particulate Sampler

1 2 29

13. Offgas Radiation Activity Monitor

At all times.

- During Steam Jet Air Ejector operation.

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DRESDEN Revision 1.13 I December 2001 TABLE 12.2-3 (Cont'd)

RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION ACTIONS AND TABLE NOTATIONS ACTION 20 - With less than the minimum channels operable, effluent releases via this pathway may continue for up to 30 days provided grab samples are taken at least once every 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months and analyzed for noble gas within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

(The SPING has one low range noble gas channel, Channel 5, while the GE Low Range Activity Monitor has two low-range noble gas channels.

The grab samples are usually taken at either the SPING, ifit is aligned in the flow path, or at the GE Low Range Activity Monitor Skid.)

ACTION 21 - With the number of operable channels less than the minimum required, effluent releases via this pathway may continue provided that the flow rate is estimated at least once per 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

(The Main Chimney Flow Rate Monitor and the Reactor Building Vent Flow Rate Monitor are used for flow through the Chimney/Vent. Channel 10 of the SPING gives the Chimney/Vent flow rate. This value can also be obtained from Point History.

The Main Chimney Sampler Flow Rate Monitor and the Reactor Building Vent Sampler Flow Rate Monitor are used for the flow through the SPING or backup sampler. Channel 15 of the SPING gives the sampler flow rate for the SPING. The U2, U3 and GE Backup systems each have a flow rate monitor.)

ACTION 22 - With less than the minimum channels operable, effluent releases via this pathway may continue provided samples are continuously collected with auxiliary sampling equipment, as required in Table 12.4-1.

(The normal sampler for 2/3 Main Chimney is the 2/3 Main Chimney SPING while for the 2/3 Reactor Building Vent it is the 2/3 Reactor Building Vent SPING.

If the 2/3 Chimney SPING is not operational, the normal backup is the GE Low Range Activity Skid. This skid collects an Iodine and Particulate sample.

If the 2/3 Reactor Building Vent SPING is not operational, the normal backups are the U2 and U3 Reactor Building Vent Samplers. The sampler for each vent collects an Iodine and Particulate sample.

If the normal backup sampler is not available, use of an alternate sampler should be used as long as it pulls from the same process stream.)

ACTION 25 - With less than the minimum channels operable, effluent releases via this pathway may continue provided that the minimum number of operable channels for the Reactor Building Vent Exhaust Duct Radiation Monitor are operable.

-(These are Channels 5 (low-range), 7 (mid-range) and 9.(high-range) on the 2/3 Reactor Building Vent SPING.)

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DRESDEN Revision 1.13 I December 2001 ACTION 26- With less than the minimum channels operable, effluent releases via this pathway may continue provided the low range monitor is operable and on scale. Restore the inoperable equipment to operable status within 21 days, or prepare and submit a report to the Commission within the next 30 days outlining the plans, actions taken and procedures to be used to provide for the loss of sampling capability of the system.

(These are Channels 7 (mid-range) and 9 (high-range) on the 2/3 Main Chimney SPING.)

ACTION 27- The main chimney SPING monitor may be out-of-service for calibration and maintenance provided that particulate and iodine samples are taken and analyzed.

The samples shall be collected using alternate filter holders and pumps connected to the main chimney sample stream.

(The normal Iodine and Particulate sampler for D1 Main Chimney is the D1 Main Chimney SPING. If the D1 Chimney SPING is not operational, the normal backup is a sample pump attached to the sample stream from the Main Chimney. The sample pump collects an Iodine and Particulate sample.)

ACTION 28 - With less than the minimum channels operable, effluent releases via this pathway may continue provided daily noble gas samples are taken and analyzed daily. Restore the inoperable equipment to operable status within 30 days. If service can not be returned, document equipment availability difficulties within the Radioactive Effluent Release Report for the period including actions taken in response to the equipment and procedures used to provide for the loss of sampling capability of the system.

(The normal noble gas monitors are Channels 5 (low-range), 7 (mid-range) and 9 (high-range) on the D1 Chimney SPING. Grab samples can either be taken off of the SPING or taps on the piping for the sample stream.) -

ACTION 29 - With less than the minimum channels operable, gases from the main condenser off gas system may be released to the environment for up to 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months provided the off gas system is not bypassed and at least one chimney monitor is operable; otherwise, be in MODE 2 in 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

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DRESDEN Revision 1.13 December 2001 TABLE 12.2-4 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS UNIT 1 Channel Applicable I \

Functional Channel Channel Source Operational Instrument Test(a)(e) Calibration(b) Check Check Modes

1. Main Chimney SPING Q E D . M

Noble Gas Monitor Low Range

At all times.

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DRESDEN Revision 1.13 December 2001 TABLE 12.2-4 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS UNITS 2 & 3 Channel Applicable Functional Channel Channel Source Operational Instrument Test(a)(e) Calibration(b)(e) Check (e) Check Modes

1. Main Chimney Noble Q E D M Gas Activity Monitor

2. Main Chimney SPING a E D M Noble Gas Monitor Lo, Mid, High Range

3. Main Chimney NA NA D(c) NA Particulate and Iodine Sampler

4. Main Chimney Flow a B D NA Rate Monitor Q(d) B D NA

5. Main Chimney Sampler Flow Rate Monitor See Technical Specification 3.3.6.2

6. Reactor Bldg Vent Exhaust Duct Radiation Monitor I

W\0 ON

7. Reactor Bldg Vent Q E D M SPING Noble Gas Monitor Lo, Mid, High Range

8. Reactor Bldg Vent Q B D NA Flow Rate Monitor Q(d) B D NA

9. Reactor Bldg Sampler Flow Rate Monitor

10. Reactor Bldg Vent NA NA D(c) NA Particulate and Iodine Sampler

11. Off Gas Radiation Q B D B

- .

... Activity Monitor ........

At all times.

- During Steam Jet Air Ejector operation.

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DRESDEN Revision 1.13 December 2001 TABLE 12.2-4 (Cont'd)

RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS TABLE NOTATIONS (a) The Channel Functional Test shall also demonstrate that control room alarm annunciation occurs, if any of the following conditions exist, where applicable.

1. Instrument indicates levels above the alarm setpoint.

2. Circuit failure.

3. Instrument indicates a downscale failure.

4. Instrument controls not set in OPERATE mode.

(b) Channel Calibration shall include performance of a Channel Functional Test. le .

(c) Channel Check to verify operability of sampler; that the sampler is in place and functioning I AP properly.

(d) Channel Functional Test shall be performed on local switches providing low flow alarm.

(e) Channel Functional Tests, Channel Calibrations, and Channel Checks are not required when these instruments are not required to be operable or are tripped. Channel Calibration is not required to be performed more than once every 18 months for Unit 1 and 24 months for Units 2 and 3.

dnl2r1-13.doc 12-17

DRESDEN Revision 1.13 December 2001 12.2.C Liquid And Gaseous Effluents Instrumentation Bases

1. The radioactive liquid and gaseous effluent instrumentation is provided to monitor the release of radioactive materials in liquid and gaseous effluents during releases. The alarm setpoints for the instruments are provided to ensure that the alarms will occur prior to exceeding the limits of RETS.

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DRESDEN Revision 1.13 December 2001 12.3 LIQUID EFFLUENTS 12.3.A Liquid Effluents Limits and Reporting Operability

1. Concentration in Unrestricted Areas The maximum instantaneous concentration of radioactive material released from the site to unrestricted areas (at or beyond the site boundary, Dresden Station ODCM Annex, Appendix F, Figure F-i) shall be limited to ten (10) times the concentrations specified in Appendix B, Table 2, Column 2 to 10CFR20.1001-20.2402, for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to the values listed in Table 12.3-1.

With the concentration of radioactive material released from the site to unrestricted areas exceeding the above limits, without delay decrease the release rate of radioactive materials and/or increase the dilution flow rate to restore the concentration to within the above limits.

2. Dose from Liquid Effluents The dose or dose commitment above background to a member of the public from radioactive materials in liquid effluents released to unrestricted areas (at or beyond the site boundary) from the site shall be limited to the following:

1. During any Calendar Quarter:

(1) Less than or equal to 3 mrem to the whole body.

(2) Less than or equal to 10 mrem to any organ.

2. During any Calendar Year:

(1) Less than or equal to 6 mrem to the whole body.

(2) Less than or equal to 20 mrem to any organ.

3. With the calculated dose from the release of radioactive materials in liquid effluents exceeding any of the above limits, prepare and submit to the Commission within 30 days a Special Report which identifies the cause(s) and defines the corrective actions taken and the proposed actions to be taken to ensure that future releases are in compliance with Sections 12.3.A.2.1 and 12.3.A.2.2. This is in lieu of a Licensee Event Report.

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DRESDEN Revision 1.13 . I December 2001 12.3.A Liquid Effluents Limits and Reportinq Operability (Cont'd)

4. With the calculated dose from the release of radioactive materials in liquid effluents exceeding the limits of Sections 12.3.A.2.1 or 12.3.A.2.2.,

prepare and submit a Special Report to the Commission within 30 days and limit the subsequent releases such that the dose or dose commitment to a member of the public from all uranium fuel cycle sources is limited to less than or equal to 25 mrern to the total bodyor any organ (except thyroid, which is limited to less than or equal to 75 mrem) over 12 consecutive months. This Special Report shall include an*

analysis which demonstrates that radiation exposures to all real individuals from all uranium fuel cycle sources (including all effluent pathways and direct radiation) are less than the 40 CFR Part 190 Standard. Otherwise obtain a variance from the Commission to permit releases which exceed the 40 CFR Part 190 Standard. The radiation exposure analysis contained in the Special Report shall use methods prescribed in the ODCM. This report is in lieu of a Licensee Event Report.

5. When the projected annual whole body or any internal organ dose computed at the nearest downstream community water system is equal to or exceeds 2 mrem from all radioactive materials released in liquid effluents from the Station, prepare and submit a Special Report within 30 days to the operator of the community water system. The report is prepared to assist the operator in meeting the requirements of 40 CFR Part 141, EPA Primary Drinking Water Standards. A copy of this. report will be sent to the NRC. This is in lieu of a Licensee Event Report.

3. Dose Proiections At all times during processing prior to discharge to the environs, process and control equipment provided to reduce the amount or concentration of radioactive materials shall be operated when the projected dose due to liquid effluent releases to unrestricted areas (Dresden Station ODCM Annex, Appendix F, Figure F-1), when averageda over 31 days, exceeds 0.12 mrem to the total body or 0.40 mrem to any organ .

aThese values represent 2% of the annual dose limits of Appendix I to 10CFR50.

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DRESDEN Revision 1.13 December 2001 12.3.A Liquid Effluents Limits and Reporting Operability (Cont'd)

4. Liquid Radioactive Waste Treatment System If liquid waste has to be or is being discharged without treatment as required above, prepare and submit to the Commission with 30 days, a report which

-includes the following information.

1. Identification of the defective equipment.

2. Cause of the defect in the equipment.

3. Action(s) taken to restore the equipment to an operating status.

4. Length of time the above requirements were not satisfied.

5. Volume and curie content of the waste discharged which was not processed by the appropriate equipment but which required processing.

6. Action(s) taken to prevent a recurrence of equipment failures.

This is in lieu of a Licensee Event Report.

5. System Operability and Plant Operations In the event a limit and/or associated action requirements identified in Sections 12.3.A and 12.3.B cannot be satisfied because of circumstances in excess of those addressed in this Section, no changes are required in the operational condition of the plant, and this does not prevent the plant from entry into any operational mode.

"123.B Liquid Effluents Surveillance

1. Concentration in Unrestricted Areas The concentration of radioactive material in unrestricted areas shall be determined to be within the prescribed limits by obtaining representative samples in accordance with the sampling and analysis program specified in Table 12.3-2.

The sample analysis results will be used with the calculational methods in the ODCM to determine that the concentrations are within the limits of Section 12.3.A.1.

I dnl 2rl -13.doc 12-21 MiiI

DRESDEN Revision 1.13 December 2001 12.3.B Liquid Effluents Surveillance (Cont'd)

2. Dose from Liquid Effluents The dose contribution from measured quantities of radioactive material shall be determined by calculation at least once per 31 days and cumulative summation of these total body and organ dosed shall be maintained for each calendar quarter.

Doses computed at the nearest community water system will consider only the drinking water pathway and shall be projected using the methods prescribed in ODCM, at least once per 92 days.

3. Dose Proiections Doses due to liquid releases to unrestricted areas (at or beyond the site boundary) shall be projected at least once per 31 days in accordance with the ODCM.

dnl2r1-13.doc 12-22

DRESDEN Revision 1.13 December 2001 TABLE 12.3-1 ALLOWABLE CONCENTRATION OF DISSOLVED OR ENTRAINED NOBLE GASES RELEASED FROM THE SITE TO UNRESTRICTED AREAS IN LIQUID WASTE NUCLIDE AC(aiCVml)*

Kr-85m 2x10e Kr-85 5 x 10.

Kr-87 4x 105 Kr-88 9 x 10s Ar-41 7 x 107' Xe-131m 7 x 10.'

Xe-1 33m 5 x 10.'

Xe-133 6 x 10.'

2 x 1074 Xe-1 35m Xe-135 2 x 10.4 Computed from Equation 20 of ICRP Publication 2 (1959), adjusted for infinite cloud submersion in water, and R = 0.01 rem/week, density = 1.0 g/cc and Pw/Pt = 1.0.

I dnl2rl-13.doc 12-23 I

DRESDEN Revision 1.13 December 2001 TABLE 12.3-2 RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM UNIT 1 LOWER LIMIT OF TYPE OF ACTIVITY DETECTION LIQUID RELEASE SAMPLING 6 MINIMUM ANALYSIS ANALYSIS (LLD)(1') (pCi/ml)

FREQUENCY( ) FREQUENCY16)

TYPE See TS 3/4.8.J Principal Gamma 5xl 0-7 Above See TS 3/4.8.J Emitters(s)

Ground Liquid Storage Dissolved & Entrained Tanks lxi 0s Gases(6 ) (Gamma Emitters) dnl2rl-13.doc 12-24

DRESDEN Revision 1.13 December 2001 TABLE 12.3-2 RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM UNITS 2 & 3 LOWER LIMIT OF TYPE OF ACTIVITY DETECTION LIQUID RELEASE SAMPLING MINIMUM ANALYSIS (LLD)(1 ) (pCi/ml)

TYPE FREQUENCY(6 ) ANALYSIS FREQUENCY(6 )

A. Batch Prior to Prior to Principal Gamma Emitters(5) 5x1o 7 Release Each Batch Each Batch 1-131 Tanks lxi 06 M Gross Alpha 1x1 0-7 Prior to Each Batch Composite(2 ) H-3 lxi 0s Q Fe-55 lxi 0 Prior to Each Batch Composite (2) Sr-89, Sr-90 5x10O.

Prior to M Dissolved & Entrained I xi 05 One Batch/M Gases (6) (Gamma Emitters)

B. Plant M(3) M(3) 1-131 lxi Ox Continuous (Grab Sample)

Releases(4) 3 MM ) M(3) Principal Gamma Emitters(5) 5x1 0 (Grab Sample)

M(3) Dissolved & Entrained lx10i5 M(3)

(Grab Sample) Gases(6 ) (Gamma Emitters)

M(3) M(3) H-3 1x10 5 (Grab Sample)

Gross Alpha lx10,7 Q(3) Q(3) Sr-89, Sr-90 5xl 0.

(Grab Sample)

Fe-55 1xi O1 D. Above Ground See Technical , See Technical..... Principal-Gamma Emitters .... 5x10 7 Liquid Storage Requirements Requirements Tanks Manual Manual Dissolved & Entrained Gases(6) (Gamma Emitters) lxi 0 5 TABLE 12.3-2 (Cont'd) dn12r1-13.doc 12-25

~flc I

DRESDEN Revision 1.13 December 2001 I

RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM TABLE NOTATION (1) The LLD is defined, for purposes of these specifications, as the smallest concentration of radioactive material in a sample that will yield a net count, above system background, that will be detected with 95% probability with only 5% probability of falsely concluding that a blank observation represents a "real" signal.

For a particular measurement system, which may include radiochemical separation:

LLD = 4.66Sh E- V - 2.22 x 106-° Y - exp (-XAt)

Where:

LLD = the lower limit of detection (microCuries per unit mass or volume),

sb= the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (counts per minute),

E = the counting efficiency (counts per disintegration),

V = the sample size (units of mass or volume),

2.22 x 10 6 = the number of disintegrations per minute per microCurie, Y = the fractional radiochemical yield, when applicable, X= the radioactive decay constant for the particular radionuclide (sec -1), and At = the elapsed time between the midpoint of sample collection and the time of counting (sec).

Typical values of E, V, Y, and At should be used in the calculation.

Alternate LLD Methodoloav An alternate methodology for LLD determination follows and is similar to the above LLD equation:

"(2.71 + 4.654B)* Decay LLD =

E q b Y t (2.22E06) dnl2r1-13.doc 12-26 it It 111ii, P P

DRESDEN Revision 1.13 December 2001 TABLE 12.3-2 (Continued)

RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM TABLE NOTATION Where:

B = background sum (counts)

E = counting efficiency, (counts detected/disintegrations) q = sample quantity, (mass or volume) b = abundance, (if applicable)

Y = fractional radiochemical yield or collection efficiency, (if applicable) t =.count time (minutes) 2.22E06 = number of disintegrations per minute per microCurie (2.71 + 4.65'4B) = k2 + (2k 412 - B), and k = 1.645.

(k=value of the t statistic from the single-tailed t distribution at a significance level of 0.95% and infinite degrees of freedom. This means that the LLD result represents a 95% detection probability with a 5% probability of falsely concluding that the nuclide present when it is not or that the nuclide is not present when it is.)

Decay = exAt [XRT/(1- eRT)] [Tdmd/(1-e-"Td)], (if applicable) 7, = radioactive decay constant, (units consistent with At, RT and Td)

At = "delta t", or the elapsed time between sample collection or the midpoint of sample collection and the time the count is started, depending on the type of sample, (units consistent with X)

RT = elapsed real time, or the duration of the sample count, (units consistent with X)

Td = sample deposition time, or the duration of analyte collection onto the sample media, (unit consistent with X)

The LLD may be determined using installed radioanalytical software, if available. In addition to determining the correct number of channels over which to total the background sum, utilizing the software's ability to perform decay corrections (i.e. during sample collection, from sample collection to start of analysis and during counting), this alternate method will result in a more accurate determination of the LLD.

It-should be-recognized that the-LLD is-defined asa before the-fact limit and not:as-arrafter the fact limit for a particular measurement.

dnl2r1-13.doc 12-27 I I

DRESDEN Revision 1.13 December 2001 TABLE 12.3-2 (Cont'd)

RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM TABLE NOTATION (2) A composite sample is one in which the quantity of liquid samples is proportional to the quantity of liquid waste discharged and in which the method of sampling employed results in a specimen

.which is representative of the liquids released.

(3) If the alarm setpoint of the service water effluent monitor as determined in the ODCM is exceeded, the frequency of analysis shall be increased to daily until the condition no longer exists.

(4) A batch release is the discharge of liquid wastes of a discrete volume. Prior to sampling for analyses, each batch shall be isolated and then thoroughly mixed to assure representative sampling. A continuous release is the discharge of liquid wastes of a nondiscrete volume; e.g.,

from a volume or system that has an input flow during the release.

(5) The principal-gamma-emitters-for which-the-LLD specification applies exclusively are the following radionuclides: Mn-54, Fe-59, Co-60, Zn-65, Co-58, Mo-99, Cs-134, Cs-137, Ce-141, and Ce-144.

Other peaks which are measurable and identifiable by gamma ray spectrometry together with the above nuclides, shall be also identified and reported when the actual analysis is performed on a sample. Nuclides which are below the LLD for the analyses shall not be reported as being present at the LLD level for that nuclide.

(6) The dissolved and entrained gases (gamma emitters) for which the LLD specification applies exclusively are the following radionuclides: Kr-87, Kr-88, Xe-133, Xe-133m, Xe-135, and Xe-1 38.

Other dissolved and entrained gases (gamma -emitters) which are measurable and identifiable by gamma ray spectrometry, together with the above nuclides, shall also be identified and reported when an actual analysis is performed on a sample. Nuclides which are below the LLD for the analyses shall not be reported as being present at the LLD level for that nuclide.

dnl2rl-13.doc 12-28

ý t,

',. JI ;", IN,,

DRESDEN Revision 1.13 December 2001 12.3.C LIQUID EFFLUENTS BASES

1. Concentration This specification is provided to ensure that the concentration of radioactive materials released in liquid waste effluents from the site to unrestricted areas will be less than the concentration levels specified in Appendix B, Table 2, Column 2 to 10CFR20.1001 20.2402.

2. Dose This specification is provided to implement the requirements of Sections II.A, III.A and IV.A of Appendix 1,10 CFR Part 50. The operational requirements implements the guides set forth in Section II.A of Appendix 1. The statements provide the required operating flexibility and at the same time implement the guides set forth in Section IV.A of Appendix I to assure that the releases of radioactive material in liquid effluents will be kept "as low as reasonably achievable". The dose calculations in the ODCM implement the requirements in Section III.A of Appendix I that conformance with the guides of Appendix I be shown-by calculational procedures based on models and data such that the actual exposure of an individual through appropriate pathways is unlikely to be substantially underestimated. The equations specified in the ODCM for calculating the doses due to the actual release rates of radioactive materials in liquid effluents will be consistent with the methodology provided in Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I", Revision 1, October 1977 and Regulatory Guide 1.113, "Estimating Aquatic Dispersion of Effluents from Accidental and Routine Reactor Releases for the Purpose of Implementing Appendix I", April 1977.

NUREG-01 13 provides methods for dose calculations consistent with Reg Guide 1.109 and 1.113.

3. Liquid Waste Treatment The operability of the liquid radwaste treatment system ensures that this system will be available for use whenever liquid effluents require treatment prior to release to the environment. The requirement that the appropriate portions of this system be used when specified provides assurance that the releases of radioactive materials in liquid effluents will be kept "as low as reasonably achievable". This specification implements the requirements of 10 CFR Part 50.36a, General Design Criterion 60 of Appendix A to 10 CFR Part 50 and design objective Section 11.D of Appendix I to 10 CFR Part 50.

dn12r1-13.doc 12-29 t"°,

4.1 A 1 .4 1 .~

DRESDEN Revision 1.13 December 2001 12.3.C LIQUID EFFLUENTS BASES - (Continued)

4. Mechanical Vacuum Pump The purpose of isolating the mechanical vacuum line is to limit release of activity from the main condenser. During an accident, fission products would be transported from the reactor through the main steam line to the main condenser. The fission product radioactivity would be sensed by the main steamline radioactivity monitors which initiate isolation.

dn12r1-13.doc 12-30

DRESDEN Revision 1.13 December 2001 12.4 GASEOUS EFFLUENTS A. Gaseous Effluents Limits and Reporting Operability

1. Dose. Rate The dose rate in unrestricted areas at or beyond the site boundary (Dresden Station ODCM Annex, Appendix F, Figure F-1) due to radioactive materials released in gaseous effluents from the site shall be limited to the following.

1. For Noble Gases:

(1) Less than a dose rate of 500 mrem/year to the whole body.

(2) Less than a dose rate of 3000 mrem/year to the skin.

2. For iodine-131, for iodine-133, tritium and for all radionuclides in particulate form with half-lives greater than 8 days, less than a dose rate of 1500 mrem/year.

3. If the dose rates exceed the above limits, without delay decrease the release rates to bring the dose rates within the limits, and provide notification to the Commission (per 10 CFR Part 20.2203).

2. Noble Gas Dose The air dose in unrestricted areas at or beyond the site boundary due to noble gases released in gaseous effluents from the unit shall be limited to the following:

1. For Gamma Radiation (1) Less than or equal to 5 mrad during any calendar quarter.

(2) Less than or equal to 10 m rad during any calendar year.

2. For Beta Radiation (1) Less than or equal to 10 mrad during any calendar quarter.

(2) Less than or equal to 20 mrad during any calendar year.

3. With the calculated air dose from radioactive noble gases in gaseous effluents exceeding any of the above limits, prepare and submit to the Commission within 30 days, a Special Report which identifies the cause(s) for exceeding the limit(s) and defines the corrective actions to be taken to ensure that future releases are in compliance with Sections 12.4.A.2.1 and 12.4.A.2.2. This is in lieu of a Licensee Event Report.

dn12rl-13.doc 12-31

i 14 f~

DRESDEN Revision 1.13 December 2001 12.4.A Gaseous Effluents Limits and Reporting Operability (Cont'd)

4. With the calculated air dose from radioactive noble gases in gaseous effluents exceeding the limits of Sections 12.4.A.2.1 or 12.4.A.2.2, prepare and submit a Special Report to the Commission within 30 days and limit the subsequent releases such that the doses or dose commitment to a member of the public from all uranium fuel cycle sources is limited to less than or equal to 25 mrem to the total body or any organ (except thyroid, which is limited to less than or equal to 75 mrem) over 12 consecutive months. This Special Report shall include an analysis which demonstrates that radiation exposures to all members of the public from all uranium fuel cycle sources (including all effluent pathways and direct radiation) are less than 40 CFR Part 190 Standard. Otherwise, obtain a variance from the Commission to permit releases which exceed the 40CFR Part 190 Standard. The radiation exposure analysis contained in the Special Report shall use the methods prescribed in the ODCM. This report is in lieu of a Licensee Event Report.

5. Process and control equipment provided to reduce the amount or concentration of radioactive materials shall be operated when the projected dose due to gaseous effluents released to the unrestricted areas, when averaged over 31 days, exceeds 2% of the annual dose limits of Appendix I to 10CFR50.

3. lodine-131, Iodine-1 33, Tritium, and Particulate Dose The dose to a member of the public in unrestricted areas at or beyond the site boundary from iodine-1 31, iodine-1 33, tritium, and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents released from the unit shall be limited to the following.

1. Less than or equal to 7.5 mrem to any organ during any calendar quarter.

2. Less than or equal to 15 mrem to any organ during any calendar year.

3. With the calculated dose from the release of iodine-1 31, iodine-1 33, tritium, and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents exceeding any of the above limits, prepare and submit to the Commission within 30 days, a Special Report which identifies the cause(s) for exceeding the limit and defines the corrective actions taken to ensure that future releases are in compliance with Section 12.4.A.3.1 and 12.4.A.3.2. This is in lieu of a Licensee Event Report.

4. With the calculated dose from the release of iodine-131, iodine-133, tritium,_

and all radionuclides in particulate form with half-lives. greater than 8 days in gaseous effluents exceeding the limits of Sections 12.4.A.3.1. or 12.4.A.3.2.,.

prepare and submit a Special Report to the Commission within 30 days and limit subsequent releases such that the dose or dose commitment to a member of the public from all uranium fuel is limited to less than or equal to 25 mrem to the total body or organ (except the thyroid, which is limited to less than or equal to 75 mrem) over 12 consecutive months. This Special Report shall include an analysis which demonstrates that radiation exposures to all members of the public from all-uranium fuel cycle sources (including-all -

effluent pathways and direct radiation) are less than the 40 CFR Part 190 Standard. Otherwise, obtain a variance from the Commission to permit releases which exceed the 40 CFR Part 190 Standard. The radiation exposure analysis contained in the Special Report shall use the methods prescribed in the ODCM. This report is in lieu of a Licensee Event Report.

12.4.A Gaseous Effluents Limits and Reporting Operability (Cont'd) 5 Process and control equipment provided to reduce the amount or concentration of radioactive materials shall be operated when the projected dnl 2r1-13.doc 12-32

DRESDEN Revision 1.13 December 2001 dose due to gaseous effluents released to the unrestricted areas, when averaged over 31 days, exceeds 2% of the annual dose limits of Appendix I to 10CFR50.

4. Off-Gas Treatment

1. At all times during processing for discharge to the environs, process and control equipment provided to reduce the amount of concentration of radioactive materials shall be operated.

2. The above specification shall not apply for the Off-Gas Charcoal Adsorber Beds below 30% RTP.

3. The recombiner shall be operable whenever the reactor is operating at a pressure greater than 900 psig.

4. The recombiner may be inoperable for 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months .

5. With either the recombiners inoperable, or all charcoal beds by-passed for more than 7 days in a calendar quarter while operating above 30% RTP, prepare and submit to the Commission within 30 days a Special Report which includes the following information.

a. Identification of the defective equipment.

b. Cause of the defect in the equipment.

c. Action(s) taken to restore the equipment to an operating status.

d. Length of time the above requirements were not satisfied.

e. Volume and curie content of the waste discharged which was not processed by the inoperable equipment but which required processing.

dn12r1-13.doc 12-33 I Ii I]

DRESDEN Revision 1.13 December 2001 12.4.A Gaseous Effluents Limits and Reportingq Operability (Cont'd)

f. Action(s) taken to prevent a recurrence of equipment failures.

This is in lieu of a Licensee Event Report.

5. Main Condenser Air Eiector The release rate of the sum of the activities from the noble gases measured at the main condenser air ejector shall be limited to < 252,700 microcuries/sec (after 30 minutes decay) when in modes 1, 2 a, and 3 a. With the release rate of the sum of the activities from noble gases at the main condenser air ejector effluent (as measured prior to the off gas holdup line) > 252,700 microcuries/sec (after 30 minutes decay),

restore the release rate to within its limits within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , or either isolate all main steam lines or isolate the SJAE within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months , or be in MODE 3 in the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in MODE 4 in the next 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . (Refer to Technical Specification 3.7.6.)

6. System-Operability- and Plant Operations In the event a limit and/or associated action requirements identified in Sections 12.4.A and 12.4.B cannot be satisfied because of circumstances in excess of those addressed in this Section, no changes are required in the operational condition of the plant, and this does not prevent the plant from entry into any operational mode.

aWith any main steam line not isolated and steam jet air ejector (SJAE) in operation.

dnl2r1-13.doc 12-34 I.!

DRESDEN Revision 1.13 December 2001 12.4.B Gaseous Effluents Surveillance

1. Dose Rate The dose rates due to radioactive materials released in gaseous effluents from the site shall be determined to be within the prescribed limits by obtaining representative samples in accordance with the sampling and analysis program specified in Table 12.4-1. The dose rates are calculated using methods prescribed in the ODCM.

2. Noble Gas Dose The air dose due to releases of radioactive noble gases in gaseous effluents shall be determined to be within the prescribed limits by obtaining representative samples in accordance with the sampling and analysis program specified in Sections A and B of Table 12.4-1. The allocation of effluents between units having shared effluent control system and the determination of cumulative and projected dose contributions for the current calendar quarter and current calendar year shall be determined in accordance with the methodology and parameters in the ODCM at least once every 31 days.

3. Iodine-131, Iodine-133, Tritium and Particulate Dose The dose to a member of the public dueto releases of iodine-1 31, iodine-1 33, tritium, and all radionuclides in particulate form with half-lives greater than 8 days shall be determined to be within the prescribed limits by obtaining representative samples in accordance with the sampling and analysis program specified in Table 12.4-1.

For radionuclides not determined in each batch or weekly composite, the dose contribution to the current calendar quarter cumulative summation may be estimated by assuming an average monthly concentration based on the previous monthly or quarterly composite-analyses. However, for reporting purposes, the calculated dose contributions shall be based on the actual composite analyses when possible.

The allocation of effluents between units having shared effluent control system and the determination of cumulative and projected dose contributions for the current calendar quarter and current calendar year shall be determined in accordance with the methodology and parameters in the ODCM at least once every 31 days.

4. Off-Gas Treatment Doses due to treated gases released to unrestricted areas at or beyond the site boundary shall be projected at least once per 31 days in accordance with the ODCM.

dn12r1-13.doc 12-35

DRESDEN Revision 1.13 December 2001 12.4.B Gaseous Effluents Surveillance - Continued

5. Noble Gases at the Main Condenser Air Eiector The release rate of noble gases from the main condenser air ejector shall be continuously monitored. The release rate of the sum of the activities from noble gases from the main condenser air ejector shall be determined to be within the limits of 12.4.A.5 at the following frequencies by performing an isotopic analysis of a representative sample of gases taken at the recombiner outlet, or at the air ejector outlet if the recombiner is by-passed.

1. At least once per 31 days.

2. Once within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months after a >50% increase in the nominal steadystate fission gas release after factoring out increases due to changes in thermal power level.

(Refer to Technical Specification 3.7.6.)

dnl2rl-13.doc 12-36

DRESDEN Revision 1.13 December 2001 TABLE 12.4-1 RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM UNIT 1

-GASEOUS SAMPLING MINIMUM TYPE OF ACTIVITY LOWER LIMIT OF RELEASE FREQUENCY ANALYSIS ANALYSIS DETECTION (LLD)(')

TYPE FREQUENCY (Pci/ml) 4 A. Main M M Principal Gamma lx10 Chimney (Grab Sample) Emitters (5)

Tritium 1x10" Noble Gases 1xlO0 M(4,6) M (3) 1-131 lxi 0-11 (Continuous) Iodine Sample 1-133 Ixl 0 "10 M(6) M (3) Principal Gamma 1x1011 Particulate Sample Emitters (5)

(Continuous)

Q Q Sr-89, Sr-90 1xl0 11 (Continuous).- Composite -- Gross Alpha Particulate Sample 12 W 1-131 1x10 B. Chem W(7)

Cleaning (Continuous) Iodine Sample 1-133 lx10"1° Chimney II-_II WM W Principle Gamma 1x10-1, Emitter (5)

(Continuous) Particulate Sample dnl2r1-13.doc 12-37

DRESDEN Revision 1.13 December 2001 Table 12.4-1 I RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM UNITS 2 & 3 LOWER LIMIT GASEOUS SAMPLING MINIMUM TYPE OF ACTIVITY OF RELEASE FREQUENCY ANALYSIS ANALYSIS DETECTION TYPE FREQUENCY (LLD)(') (pCi/ml)

A. Main M M(2) Principal Chimney (Grab Sample) Gamma Emitters(s) lxi 0 Reactor 1xi 0.6 M Tritium Bldg.

Vent Stack WM3 1-131 lx1012 B. All Continuous (4)

Iodine Sample 1-133 1x1010 Release Types as Listed in A above Continuous(4) WM Principal Gamma lxi 0.11 Particulate Sample Emitters (5)

I Continuous(4) Q Sr-89 lx10"11 Composite Particulate Sample Sr-90 lxi 011 Continuous(4) Q Gross Alpha lx 0"11 Composite Particulate Sample Noble Gas Monitor Noble Gases lx10"6 C. Main Continuous(4)

Chimney Noble Gas Monitor Noble Gases lx10-4 D. Reactor Continuous(4)

Bldg.

Vent Stack I

dn12r1-13.doc 12-38 I I

DRESDEN Revision 1.13 December 2001 TABLE 12.4-1 (Cont'd)

RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM TABLE NOTATION (1) The LLD is defined, for purposes of these specifications, as the smallest concentration of radioactive material in a sample that will yield a net count, above system background, that will be blank detected with 95% probability with only 5% probability of falsely concluding that a observation represents a "real" signal.

For a particular measurement system, which may include radiochemical separation:

LLD 4.66Sh E

V 2.22 x 106 ;-Y exp (-XAIt)

Where:

LLD = the lower limit of detection (microCuries per unit mass or volume),

Sb = the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (counts per minute),

E = the counting efficiency (counts per disintegration),

V = the sample size (units of mass or volume),

2.22 x 106 = the number of disintegrations per minute per microCurie, Y = the fractional radiochemical yield, when applicable, X= the radioactive decay constant for the particular radionuclide (sec 1), and At = the elapsed time between the midpoint of sample collection and the time of counting (sec).

Typical values of E, V, Y, and At should be used in the calculation.

Alternate LLD Methodology An alternate methodology for LLD determination follows and is similar to the above LLD equation:

(2.71 + 4.654B)° Decay LLD =

E q b Y t (2.22E06) dn12r0-13.doc 12-39 U,:

DRESDEN Revision 1.13 December 2001 TABLE 12.4-1 (Continued)

RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM TABLE NOTATIONS Where:

B = background sum (counts)

E = counting efficiency, (counts detected/disinteg rations) q = sample quantity, (mass or volume) b = abundance, (if applicable)

Y = fractional radiochemical yield or collection efficiency, (if applicable) t = count time (minutes) 2.22E06 = number of disintegrations per minute per microCurie (2.71 + 4.654/B) = k + (2k 4 2 4 B), and k = 1.645.

(k=value of the t statistic from the single-tailed t distribution at a significance-level.

of 0.95% and infinite degrees of freedom. This means that the LLD result represents a 95% detection probability with a 5% probability of falsely concluding that the nuclide present when it is not or that the nuclide is not present when it is.)

Decay = ex't [,RT/(1 -e-xRT)] [XTd/(1-e'xTd)], (if applicable)

S= radioactive decay constant, (units consistent with At, RT and Td)

At = "delta t", or the elapsed time between sample collection or the midpoint of sample collection and the time the count is started, depending on the type of sample, (units consistent with X)

RT = elapsed real time, or the duration of the sample count, (units consistent with X)

Td = sample deposition time, or the duration of analyte collection onto the sample media, (unit consistent with X)

The LLD may be determined using installed radioanalytical software, ifavailable. In addition to determining the correct number of channels over which to total the background sum, utilizing the software's ability to perform decay corrections (i.e. during sample collection, from sample collection to start of analysis and during counting), this alternate method will result in a more accurate determination of the LLD.

It should be recognized that the LLD -is defined-as a before the -fact-limit and not as an after the .

fact limit for a particular measurement.

dnl 2rl -13.doc 12-40

DRESDEN Revision 1.13 I December 2001 TABLE 12.4-1 (Cont'd)

RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM TABLE NOTATION (2) Sampling and analyses shall also be performed following shutdown, startup, or a thermal power change exceeding 20% RTP 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months unless (1) analysis shows that the dose equivalent 1-131 concentration in the primary coolant has not increased more than a factor of 5, and (2) the noble gas activity monitor shows that effluent activity has not increased by more than a factor of 3.

(3) Samples shall be changed at least once per 7 days and the analyses completed within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months after removal from the sampler. Sampling shall also be performed within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months following each shutdown, startup, or thermal power level change exceeding 20% RTP in one hour. This It requirement does not apply if 1) analysis shows that the dose equivalent 1-131 concentration in the primary coolant has not increased more than a factor of 5, and 2) the noble gas activity monitor shows that effluent activity has not increased by more than a factorof 3. -When samples collected for 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months are analyzed, the corresponding LLDs may be increased by a factor of 10.

(4) The ratio of sample flow rate to the sampled stream flow rate shall be known.

(5) The principal gamma emitters for which the LLD specification applies exclusively are the following radionuclides: Kr-87, Kr-88, Xe-133, Xe-133m, Xe-135, and Xe-138 for gaseous emissions, and Mn-54, Fe-59, Co-60, Zn-65, Co-58, Mo-99, Cs-134, Cs-137, Ce-141, and Ce-144 for particulate emissions. Other peaks which are measurable and identifiable by gamma ray spectrometry, together with the above nuclides, shall be*also identified and reported when an actual analysis is performed on a sample. Nuclides which are below the LLD for the analyses shall not be reported as being present at the LLD level for the nuclide.

(6) Analysis frequency shall be increased to i/week if release rates exceed 1% of anyapplicable limit referenced in the ODCM, when added to Units 2 and 3 airborne effluents.

(7) Gaseous Discharge from the Chemical Cleaning Building is continuously sampled through a particulate filter and iodine cartridge which are counted weekly. Sampling is not required if the Chemical Cleaning and Interim Radwaste Storage Facility (IRSF) ventilation systems are not running.

dnl2rl-13.doc I 12-41

DRESDEN Revision 1.13 December 2001 I

12.4.C Gaseous Effluents Bases

1. Gaseous Effluents, Dose This Section is provided to ensure that the dose at the unrestricted area boundary from gaseous effluents from the units on site will be within the annual dose limits of 10CFR20 for unrestricted areas. These limits provide reasonable assurance that radioactive .

material discharged in gaseous effluents will not result in the exposure of an individual in an unrestricted area to annual average concentrations exceeding the limits specified in Appendix B, Table 2 of 10CFR20.1001-2402. The release rate limits restrict, at all times, thecorresponding gamma and beta dose rates above background to an individual at or "

beyond the unrestricted area boundary to less than or equal to 500 mrem/year to the total body or to less than or equal to 3000 mrem/year to the skin. These release rate limits also restrict, at all times, the corresponding thyroid dose rate above background via the inhalation pathway to less than or equal to 1500 mrem/year. For purposes of calculation doses resulting from airborne releases, the main chimney is considered to be an elevated release point and the reactor bpilding vent stack is considered to be'a mixed mode release point.

2. Dose, Noble Gases This Section is provided to implementthe requirements of Sections II.B, llL.Aand IV.A of Appendix I, 10 CFR Part 50. The Operability Requirements implement the guides set forth in Section 11.3 of Appendix I. The statements provide the required operating flexibility. and at the same time implement the guides set forth in Section IV.A of Appendix Ato assure that the releases of radioactive material in gaseous effluents will be kept "as low as is reasonably achievable." The surveillance requirements implement the requirements in Section III.A of Appendix I that conformance with the guides of Appendix I is to. be shown by calculational procedures based on models and data such that. the actual exposure of an individual through the appropriate pathways is unlikely to be substantially underestimated. The dose calculations established in the ODCM for calculating the doses due to the actual release rates of radioactive noble gases in gaseous effluents will be consistent with the methodology provided in Regulatory Guide 1.109, "Calculation'of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I," Revision 1, October 1977 and Regulatory Guide 1.111, "Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water Cooled Reactors," Revision 1, July 1977. NUREG-01 33 provides methods for dose calculations consistent with Regulatory Guides 1.109 and 1.111.

dnl2r1-13.doc 12-42 Ili(,

DRESDEN .......- Revision 1.13 December 2001 I

12.4.C Gaseous Effluents Bases (Cont'd)

3. Dose, Radioiodines, Radioactive Material in Particulate Form and Radionuclides Other than Noble Gases This Section is provided to implement the requirements of Sections IL.C, III.A and IV.A of Appendix I, 10 CFR Part 50. The Operability Requirements are the guides set forth in

Section II.C of Appendix I. The statements provide the required operating flexibility and at the same time implement the guides set forth in Section IV.A of Appendix I to assure that the releases of radioactive materials in gaseous effluents will be kept "as low as reasonably achievable." The ODCM calculational methods specified in the surveillance requirements implement the requirements in Section IIL.A of Appendix I that conformance with the guides of Appendix I be shown by calculational procedures based on models and data such that the actual exposure of an individual through appropriate pathways is unlikely to be substantially underestimated. The ODCM calculational methods approved by.NRC for calculating the doses due to the actual release rates of the subject materials are required to be consistent with the methodology provided in Regulatory Guide 1.109.

"Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I", Revision 1, October 1977 and Regulatory Guide 1.111, "Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water-Cooled Reactors,"

Revision 1, July 1977. These equations also provide for determining the actual doses based upon the historical average atmospheric conditions. The release rate limits for radioiodines, radioactive material in particulate form and radionuclides other than noble gases are dependent on the existing radionuclide pathways to man, in the unrestricted area. The pathways which were examined in the development of these limits were: 1) individual inhalation of airborne radionuclides, 2) deposition of radionuclides onto green leafy vegetation with subsequent consumption by man and 3) deposition onto grassy areas where milk animals graze with consumption of the milk by man.

4. Gaseous Waste Treatment The operability of the gaseous waste treatment which reduces amounts or concentrations of radioactive materials ensures that the system will be available for use whenever gaseous effluents require treatment prior to release to the environment. The requirement that the appropriate portions of this system be operable when specified provides reasonable assurance that the releases of radioactive materials in gaseous effluents will be kept "as low as reasonably achievable". This specification implements the requirements of 10 CFR Part 50.36a, General Design Criterion 60 of Appendix A to 10 CFR Part 50, and design objective Section II.D of Appendix I to 10 CFR Part50.

dn12r1-13.doc 12-43 I!,, fi I

DRESDEN Revision 1.13 December 2001 12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 12.5.1 Monitoring Program OperabilitV Requirements 12.5.1 .A The Radiological Environmental Monitoring Program shall be conducted as specified in Table 12.5-1.

Applicability. At all times.

Action:

1. With the Radiological Environmental Monitoring Program not being conducted as specified in Table 12.5-1, prepare and submit to the Commission, in the Annual Radiological Environmental Operating Report required by Section 12.6.1, a description of the reasons for not conducting the program as required and the plans for preventing a recurrence.

Deviations are permitted from the required sampling schedule ifspecimens are unobtainable due to hazardous conditions, seasonal availability, malfunction of sampling equipment, if a person/business who participates in the program goes out of business or no longer can provide sample, or contractor omission which is

-corrected as soon as discovered. If the equipment malfunctions, corrective actions shall be completed as soon as practical. If a person/business supplying samples goes out of business, a replacement supplier shall be found as soon as possible. All deviations from the sampling schedule will be described in the Annual Radiological Environmental Operating Report.

2. With the level of radioactivity as the result of plant effluents in an environmental sampling medium at a specified location exceeding the reporting levels of Table 12.5-2 when averaged over any calendar quarter, prepare and submit to the Commission within 30 days, pursuant to Technical- Specification 6.9.B, a Special Report that identifies the cause(s) for exceeding the limit(s) and defines the corrective actions to be taken to reduce radioactive effluents so that the potential annual dose* to a MEMBER OF THE PUBLIC is less than the calendar year limits of Section 12.3.A.2, 12.4.A.2, or 12;4.A.3. When more than one of the radionuclides in Table 12.5-2 are detected in the sampling medium, this report shall be submitted if:

concentration (1) + concentration (2) + ...> 1.0 reporting level (1) reporting level (2)

When radionuclides other than those in Table 12.5-2 are detected and are the result of plant effluents, this report shall be submitted ifthe potential annual dose*

to A MEMBER OF THE PUBLIC from all radionuclides is equal to or greater than the calendar year limits of Section 12.3.A.2, 12.4.A.2, or 12.4.A.3. This report is not required if the measured level of radioactivity was not the result of plant

.effuent.s; hw.ever,in such an event,. the condition shall be_reporeand and described in the Annual Radiological Environmental Operating Report required by Section 12.6.1.

The methodology and parameters used to estimate the potential annual dose to a MEMBER OF THE PUBLIC shall be indicated in this report.

dnl2r1-13.doc 12-44

DRESDEN Revision 1.13 December 2001 12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Continued) 12.5.1.A.3. If the sample type or sampling location(s) as required by Table 12.5-1 become(s) permanently unavailable, identify suitable alternative sampling media for the pathway of interest and/or specific locations for obtaining replacement samples and add them to the Radiological Environmental Monitoring Program as soon as practicable. The specific locations from which samples were unavailable may then be deleted from the monitoring program.

Prepare and submit controlled version of the ODCM within 180 days including a revised figure(s) and table reflecting the new location(s) with supporting information identifying the cause of the unavailability of samples and justifying the selection of new location(s) for obtaining samples.

Surveillance Requirements 12.5.1.B The radiological environmental monitoring program samples shall be collected pursuant

-to-Table 12.54-from the specific locations given in-the table and figure(s) in the ODCM, and shall be analyzed pursuant to the requirements of Table 12.5-1 and the detection capabilities required by Table 12.5-3.

Bases 12.5.1 .C The Radiological Environmental Monitoring Program required by this section provides representative measurements of radiation and of radioactive materials in those exposure pathways and for those radionuclides that lead to the highest potential radiation exposures of MEMBERS OF THE PUBLIC resulting from the station operation. This monitoring program implementsSection IV.B.2 of Appendix I to 10 CFR Part 50 and thereby supplements the radiological effluent monitoring program by verifying that the measurable concentrations of radioactive materials and levels of radiation are not higher than expected on the basis of the effluent measurements and the modeling of the environmental exposure pathways. Guidance for this monitoring program is provided by the Radiological Assessment Branch Technical Position on Environmental Monitoring.

The initially specified monitoring program will be effective for at least the first 3 years of commercial operation. Following this period, program changes may be initiated based on operational experience.

The required detection capabilities for environmental sample analyses are tabulated in terms of the lower limits of detection (LLDs). The LLDs required by Table 12.5-3 are considered optimum for routine environmental measurements in industrial laboratories. It should be recognized that the LLD is defined as a before the fact limit representing the capability of a measurement system and not as an after the fact limit for a particular measurement.

Detailed discussion of the LLD, and other detection limits, can be found in HASL Procedures Manual, HASL-300 (revised annually), Currie, LA., "Limits for Qualitative Detection and Quantitative Determination - Application to Radiochemistry," Anal: Chem.

40,. 586-93 (1968), and Hartwell, J.K., "Detection Limits for Radioanalytical Counting, Techniques," Atlantic Richfield Hanford Company Report ARH-SA-215 (June 1975).

dnl2rl-13.doc 12-45 ii

DRESDEN Revision 1.13 December 2001 I

12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Continued)

I Interpretations 12.5.1.D Table 12.5-1 requires "one sample of each community drinking water supply downstream of the plant within 10 kilometers." Drinking water supply is defined as water taken from rivers, lakes, or reservoirs (not well water) which is used for drinking.

dnl2rl-13.doc 12-46 I: I

DRESDEN Revision 1.13 December 2001 TABLE 12.5-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM EXPOSURE PATHWAY NUMBER OF REPRESENTATIVE SAMPLES SAMPLING AND COLLECTION TYPE AND AND/ OR SAMPLE AND SAMPLE LOCATIONS(')' FREQUENCY FREQUENCY OF ANALYSIS

1. Airborne Samples from a total of eight locations: Continuous particulate sampler Radioiodine Canister:

Radioiodine and operation with sample collection 1-131 analysis biweekly Particulates a. Indicator- Near Field weekly, or more frequently if on near field samples and required due to dust loading, and control.(2 )

Four samples from locations within 4 km (2.5 mi) radioiodine canister collection in different sectors. biweekly. Particulate Sampler:

Gross beta analysis

b. Indicator- Far Field _ following weekly filter change and gamma isotopic analysis(4)

Four additional locations within 4 to 10 km (2.5 to 6.2 mi) in different sectors. quarterly on composite filters by location on near

c. Control field samples and control.(2)

One sample from a control location within 10 to

_ _ _ 30 km (6.2 to 18.6 mi).

dnl2r1-13.doc 12-47

DRESDEN Revision 1.13 December 2001 TABLE 12.5-1 (Continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM EXPOSURE PATHWAY NUMBER OF REPRESENTATIVE SAMPLES SAMPLING AND COLLECTION TYPE AND AND/ OR SAMPLE AND SAMPLE LOCATIONS(1 ) FREQUENCY FREQUENCY OF

_ _ _ __ANALYSIS

2. Direct Raiaio(5) Forty routine monitoring stations either with a Quarterly Gamma dose on each Radiation thermoluminescent dosimeter (TLD) or with one TLD quarterly.

instrument for measuring dose rate continuously, placed as follows:

a. Indicator- Inner Ring (100 Series TLD)

One in each meteorological sector, in the general area of the SITE BOUNDARY

(0.1 to 2 miles);

b. Indicator- Outer Ring (200 Series TLD)

One in each meteorological sector, within 3.2 to 10 kn (2 to 6.2 mi); and

c. Other One at each Airborne location given in part 1.a. and 1.b.

The balance of the TLDs to be placed at special

,, interest locations beyond the Restricted Area where either a MEMBER OF THE PUBLIC or Commonwealth Edison employees have routine

access.

.__ _(300_ _ Series TLD) dn12rl-13.doc 1tAQ

TABLE 12.5-1 (Continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM EXPOSURE PATHWAY NUMBER OF REPRESENTATIVE SAMPLES SAMPLING AND COLLECTION TYPE AND AND/UOR SAMPLE AND SAMPLE LOCATIONS(1') FREQUENCY FREQUENCY OF ANALYSIS

2. Direct d. Control Quarterly Gamma dose on each Radiation(5) (Cont'd) TLD quarterly.

One at each Airborne control location given in part 1.c

3. Waterborne a. Indicator Quarterly Gamma isotopic(4) and

a. Ground/Well tritium analysis quarterly.

Samples from three sources only if likely to be affected.(6)

b. Drinking (7) a. Indicator Weekly grab samples. Gross beta and gamma isotopic analyses(4) on One Sample from each community drinking monthly composite; water supply that could be affected by the tritium analysis on station discharge within 10 km (6.2 mi) quarterly composite.

downstream of discharge.

c. Surface If no community water supply (Drinking Water) Weekly grab samples. Gross beta and gamma Water(7) exists within 10 km downstream of discharge isotopic analyses(4) on then surface water sampling shall be performed. monthly composite; tritium analysis on

a. Indicator quarterly composite.

One sample downstream

d. Control a. Control Weekly grab samples. Gross beta and gamma Sample(7 ) isotopic analyses(4 ) on One surface sample upstream of discharge. monthly composite; tritium analysis on

_ _ _quarterly composite.

dnl2r1-13.doc i O.AQ

DRESDEN Revision 1.13 December 2001 TABLE 12.5-1 (Continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM EXPOSURE PATH WAY NUMBER OF REPRESENTATIVE SAMPLES SAMPLING AND COLLECTION TYPE AND AND/OR SAMPLE AND SAMPLE LOCATIONS(') FREQUENCY FREQUENCY OF

____ANALYSIS

e. Sediment a. Indicator Semiannually. Gamma isotopic analysis(4) semiannually.

At least one sample from downstream(7) area within 10 km (6.2 mi).

f. Dredging Spoils a. Indicator Annually when dredging occurs Gamma isotopic(4) within past year. analysis annually.

At least one sample of sediment from dredging within 1 mile downstream of station discharge point.

4. Ingestion a. Indicator Biweekly (9)when animals are on Gamma isotopic(4) and pasture (May through October), 1-131 (10) analysis on each milking animals from10a km monthly at other times sample.

a. Milk (8) maximumfrom Samples of three locations within (November through April).

(6.2 mi) distance.

b. Control One sample from milking animals at a control location within 10 to 30 km (6.2 to 18.6 mi).

b. Fish a. Indicator Sanalysis Two times annually. Gamma (4) isotopic on edible tio por ns Representative samples of commercially and recreationally important species in discharge Sarea.

1 b. Control.

Representative samples of commercially and recreationally important species in control locations upstream of discharge.

dnl2r1-13.doc I0 M

DRESD]EN Revision 1.13 December 2001 TABLE 12.5-1 (Continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM EXPOSURE PATHWAY NUMBER OF REPRESENTATIVE SAMPLES SAMPLING AND COLLECTION TYPE AND 1

AND/ OR SAMPLE AND SAMPLE LOCATIONSM 1 FREQUENCY FREQUENCY OF ANALYSIS

c. Food Products a. Indicator Annually Gamma isotopic(4) analysis on each sample.

Two representative samples from the

principal food pathways grown in each of four major quadrants within 10 km (6.2 mi):

At least one root vegetable sample'11 At least one broad leaf vegetable (or vegetation)("1)

b. Control

Two representative samples similar to indicator samples grown within 15 to 30 km

(9.3 to 18.6 mi).

dnl2rl-13.doc "if)-i

DRESDEN Revision 1. 13 December 2001 TABLE 12.5-1 (Continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM TABLE NOTATIONS (1) Specific parameters of distance and direction from the centerline of the midpoint of the two units and additional description where pertinent, shall be provided for each and every sample location in Table 1.1-1 of the ODCM Station Annexes. Refer to NUREG-01 33, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants,"

October 1978, and to Radiological Assessment Branch Technical Position, Revision 1, November 1979.

(2) Far field samples are analyzed when the respective near field sample results are inconsistent with previous measurements and radioactivity is confirmed as having its origin in airborne effluents from the station, or at the discretion of the Radiation Protection Director.

(3) Airborne particulate sample filters shall be analyzed for gross beta radioactivity 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or more after sampling to allow for radon and thoron daughter decay. If gross beta activity in air particulate samples is greater than 10 times the yearly mean of control samples, gamma isotopic analysis shall be performed on the individual samples.

(4) Gamma isotopic analysis means the identification and quantification of gamma emitting radionuclides that may be attributable to the effluents from the station.

(5) One or more instruments, such as a pressurized ion chamber, for measuring and recording dose rate continuously may be used in place of, or in addition to, integrating dosimeters. Film badges shall not be used as dosimeters for measuring direct radiation.

The 40 locations is not an absolute number. The number of direct radiation monitoring stations may be reduced according to geographical limitations; e.g., If a station is adjacent to a lake, some sectors may be over water thereby reducing the number of dosimeters which could be placed at the indicated distances. The frequency of analysis or readout for TLD systems will depend upon the characteristics of the specific system used and should be selected to obtain optimum dose information with minimal fading.

(6) Groundwater samples shall be taken when this source is tapped for drinking or irrigation purposes in areas where the hydraulic gradient or recharge properties are suitable for contamination.

(7) The "downstream" sample shall be taken in an area beyond but near the mixing zone.

The "upstream sample" shall be taken at a distance beyond significant influence of the discharge. Upstream samples in an estuary must be taken far enough upstream to be beyond the station influence.

(8) If milking animals are not found in the designated indicator locations, or if the owners decline to participate in the REMP, all milk sampling may be discontinued.

(9) Biweekly refers to every two weeks.

(10) 1-131 analysis means the analytical separation and counting procedure are specific for this ra ioci de'.

(11) One sample shall consist of a volume/weight of sample large enough to fill contractor specified container.

dn12r1-13.doc 12-52

DRESDEN Revision 1.13 December 2001 TABLE 12.5-2 REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS INENVIRONMENTAL SAMPLES REPORTING LEVELS WATER AIRBORNE PARTICULATE FISH MILK FOOD PRODUCTS ANALYSIS (pCi/I) OR GASES (pCi/m3 ) (pCi/kg, wet) (pCi/I) (pCi/kg, wet)

H-3 20,000(')

Mn-54 1,000 30,000 Fe-59 400 10,000 Co-58 1,000 30,000 Co-60 300 10,000 Zn-65 300 20,000 Zr-Nb-95 400 1-131 2(2) 0.9 3 100 Cs-1 34 30 10 1,000 60 1,000 Cs-1 37 50 20 2,000 70 2,000 Ba-La-1 40 200 300 (1) For drinking water samples. This is 40 CFR Part 141 value. If no drinking water pathway exists, a value of 30,000 pCi/I may be used'.

(2) If no drinking water pathway exists, a value of 20 pCi/I may be used.

dn12r1-13.doc 12-53

DRESDEN Revision 1.13 I December 2001 TABLE 12.5-3 DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS( 1 )

2 LOWER LIMIT OF DETECTION (LLD)( )(3)

WATiR AIRBORNE PARTICULATE FISH MILK FOOD PRODUCTS SEDIMENT ANALYSIS (pCi/lI) OR GASES (pCi/m 3) (pCi/kg, wet) (pCi/I)' (pCi/kg, wet) (pCi/kg, dry)

Gross Beta 4 0.01 1000 H-3 2,000(7) I Mn-54 15 130 Fe-59 30 260 Co-58,60 15 130 Zn-65 30 260 Zr-Nb-95 15 I-131(6) 1/15(4) 0.07 100 0.5/5(') 60 Cs-134 15 0.01 100 15 60 150 Cs-137 18 0.01 100 18 80 180 Ba-La-140 15 15 dnl2rl-13.doc 12-54

DRESDEN Revision 1.13 December 2001 TABLE 12.5-3 (Continued)

DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS TABLE NOTATIONS The nuclides on this list are not the only nuclides intended to be considered. Other peaks that are identifiable, together with those of the above nuclides, shall also be analyzed and reported in the Annual Radiological Environmental Operating Report.

Required detection capabilities for thermoluminescent dosimeters used for environmental measurements shall be in accordance with the recommendations of Regulatory Guide 4.13.

The Lower Limit of Detection (LLD) is defined, for purposes of these specifications, as the smallest concentration of radioactive material in a sample that will yield a net count, above system background, that will be detected with 95% probability with only 5% probability of falsely concluding that a blank observation represents a "real" signal.

For a particular measurement system, which may include radiochemical separation, the LLD is defined as follows:

4 66

. Sb + 3 /tb LLD =

(E) (V) (2.22) (Y) (exp (-Xvt))

4.66 Sb LLD (E) (V) (2.22) (Y) (exp (-Xt))

Where: 4.66 Sb >> 3 Ab LLD = the "a priori" Minimum Detectable Concentration (picoCuries per unit mass or volume),

sb = the standard deviation of the background counting rate or of the counting rate of a blank sample, as appropriate (counts per minute),

[Total Counts

= tb E = the counting efficiency(counts per disintegration),

V = the sample size (units of mass or volume),

2.22 = the number of disintegrations per minute per picoCurie, y = the fractional radiochemical yield, when applicable,

?. = the.radioactive-decay.constant for the-particular radionujclide (sec'),

2r1 -1 3.doc 12-55

DRESDEN Revision 1.13 December 2001 TABLE 12.5-3 (Continued)

DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS TABLE NOTATIONS tb counting time of the background or blank (minutes), and At the elapsed time between sample collection, or end of the sample collection period, and the time of counting (sec).

Typical values of E, V, Y, and At should be used in the calculation.

It should be recognized that the LLD is defined as a before the fact limit representing the capability of a measurement system and not as an after the fact limit for a particular measurement.

Analyses shall be performed in such a manner that the stated LLDs will be achieved under routine conditions.

..Occasionally, background fluctuations, unavoidable small sample sizes, the presence of interfering nuclides, or other uncontrollable circumstances may render these LLDs unachievable. In such cases, the contributing factors shall be identified and described in the Annual Radiological Environmental Operating Report.

Alternate LLD Methodoloy "

An alternate methodology for LLD determination follows and is similar to the above LLD equation:.

(2.71 + 4.654/B)- Decay LLD =

E q b Y t (2.22E06)

Where:

B = background sum (counts)

E = counting efficiency, (counts detected/disintegrations) q = sample quantity, (mass or volume) b = abundance, (if applicable)

Y = fractional radiochemical yield or collection efficiency, (if applicable) t = count time (minutes) 2.22E06 = number of disintegrations per minute per microCurie (2.71 + 4.654B) = k2 + (2k 4 2 ,4 B), and k = 1.645..

(k=value of the t statistic from the single-tailed t distribution at a significance level of 0.95% and-infinite degrees of freedom."This means that the LLD result.. .

represents a 95% detection probability with a 5% probability of falsely concluding that the nuclide present when it is not or that the nuclide is not present when it is.)

Decay = eý t [,RT/(1l-eRT)] [ lTd/(l-e'xTd)], (if applicable) 2r1 -13.doc 12-56

DRESDEN Revision 1.13 December 2001 TABLE 12.5-3 DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS TABLE NOTATIONS X = radioactive decay constant, (units consistent with At, RT and Td)

At = "delta t", or the elapsed time between sample collection or the midpoint of sample collection and the time the count is started, depending on the type of sample, (units consistent with X)

RT = elapsed real time, or the duration of the sample count, (units consistent with X)

Td = sample deposition time, or the duration of analyte collection onto the sample media, (unit consistent with X)

The LLD may be determined using installed radioanalytical software, if available. In addition to determining the correct number of channels over which to total the background sum, utilizing the software's ability to perform decay corrections (i.e. during sample collection, from sample collection to start of analysis and during counting), this alternate method will result in a more accurate determination of the LLD.

It should be recognized that the LLD is defined as a before the fact limit and not as an after the fact limit for a particular measurement.

If no drinking water pathway exists, the value of 15 pCi/I may be used.

A value of 0.5 pCi/A shall be used when the animals are on pasture (May through October) and a value of 5 pCji shall be used at all other times (November through April).

This LLD applies only when the analytical separation and counting procedure are specific for this radionuclide.

This LLD is the minimum allowable, however, vendors performing environmental sample analyses off-site will be required to meet an LLD of 200 pCi/.

_r1 -13.doc 12-57

DRESDEN Revision 1.13 December 2001 12.5.2 Land Use Census Operability Requirements 12.5.2.A. A Land Use Census shall be conducted and shall identify within a distance of 10 km (6.2 miles) the location in each of the 16 meteorological sectors* of the nearest milk animal, the nearest residence**,

and an enumeration of livestock. For dose calculation, a garden will be assumed at the nearest residence.

Applicability: At all times.

Action:

1. With a Land Use Census identifying a location(s) that yields a calculated dose or dose commitment, via the same exposure pathway 20% greater than at a location from which samples are currently being obtained in accordance with Section 12.5.1, add the new location(s) within 30 days to the Radiological Environmental Monitoring Program given in Chapter 11. The sampling location(s), excluding t-he control location, having-the lowest calculated dose or dose commitment(s), via the same exposure pathway, may be deleted from this monitoring program after October 31 of the year in which this Land Use Census was conducted. Submit in the next Annual Radiological Environmental Operating Report documentation for a change in the ODCM including a revised figure(s) and table(s) for the ODCM reflecting the new location(s) with information supporting the change in sampling locations.

This requirement may be reduced according to geographical limitations; e.g. at a lake site where some sector's will be over water.

"**The nearest industrial facility shall also be documented if closer than the nearest residence.

Surveillance Requirements 12.5.2.B The Land Use Census shall be conducted during the growing season, between June 1 and October 1, at least once per 12 months using that information that will provide the best results, such as by a door-to-door survey, aerial survey, or by consulting local agriculture authorities. The results of the Land Use Census shall be included in the Annual Radiological Environmental Operating Report.

Bases 12.5.2.C This specification is provided to ensure that changes in the use of areas at and beyond the SITE BOUNDARY are identified and that modifications to the Radiological Environmental Monitoring Program given in the ODCM are made if required by the results of this census.

This census satisfies the requirements of Section IV.B.3 of Appendix I to 10 CFR Part 50. An annual garden census will not be required since the licensee will assume that there is a garden at the nearest residence in each sector for dose calculations.

dnl2r1-13.doc 12-58

DRESDEN Revision 1. 13 December 2001 12.5.3 Interlaboratory Comparison Program Operability Requirements 12.5.3.A Analyses shall be performed on radioactive materials supplied as part of an Interlaboratory Comparison Program that correspond to samples required by Table 12.5-1.

Applicability: At all times.

Action:

1. With analyses not being performed as required above, report the corrective actions taken to prevent a recurrence to the Commission in the Annual Radiological Environmental Operating Report.

Surveillance Requirements 12.5.3.B A summary of the results obtained as part of the above required Irlterlaboratory Comparison Program shall be included in the Annual Radiological Environmental Operating Report.

Bases to 12.5.3.C The requirement for participation in an Interlaboratory Comparison Program is provided ensure that independent checks on the precision and accuracy of the measurements of radioactive material in environmental samples matrices are performed as part of the quality assurance program for environmental monitoring in order to demonstrate that the results are valid for the purposes of Section IV.B.2 of Appendix I-to 10 CFR Part 50.

dnl2r1-13.doc 12-59 I

DRESDEN I Revision 1.13 December 2001 12.6 RECORDKEEPING AND REPORTING 12.6.1. Station Operating Records

1. Records and/or logs relative to the following items shall be kept in a manner convenient for review and shall be retained for at least five years.

1. Records and periodic checks, inspection and/or calibrations performed to verify the surveillance requirements (See the applicable surveillance in the Instrumentation, Liquid Effluents, Gaseous Effluents, and Radiological Environmental Monitoring Sections) are being met. All equipment failing to meet surveillance requirements and the corrective action taken shall be recorded.

2. Records of radioactive shipments.

2. Records and/or logs relative to the following items shall be recorded in a manner convenient for review and shall be retained for the life of the plant.

1. Records of off-site environmental monitoring surveys.

2. Records of radioactivity in liquid and gaseous wastes released to the environment.

3. Records of reviews performed for changes made to the ODCM.

12.6.2. Reports

1. Radioactive Effluent Release Report*

For Unit 1, the Radioactive Effluent Release Report covering the decommissioning activities of the unit during the previous calendar year shall be submitted prior to April 1 of each year in accordance with 10 CFR 50.36a. The report shall include a summary of the quantities of radioactive liquid and gaseous effluents and solid waste released from the unit. The material provided shall be consistent with the objectives outlined in the ODCM and the Process Control Program (PCP) and in conformance with 10 CFR 50.36a and 10 CFR 50, Appendix I, Section IV.B.1.

For Units 2 and 3, the Radioactive Effluent Release Report covering the operation of the unit during the previous calendar year shall be submitted prior to May 1 of each year in accordance with 10CFR 50.36a. The report shall include a summary of the quantities of radioactive liquid and gaseous effluents and solid waste released from the unit. The material provided shall be consistent with the objectives outlined in the ODCM and PCP and in conformance with 10 CFR Part 50.36a and 10 CFR 50, Appendix I, Section IV.B.1.

A single submittal may be made for a multiple unit station. The submittal should combine sections common to all units at the station; however, for units with separate radwaste systems, the submittal shall specify the releases of radioactive material from each unit.

dn12r1-13.doc 12-60 i

DRESDEN Revision 1. 13 December 2001 12.6.2 Report - (Cont'd)

2. Annual Radiological Environmental Operating Report**

For Unit 1, the Annual Radiological Environmental Operating Report covering the decommissioning activities of the unit during the previous calendar year shall be submitted prior to May 1 of each year. The report shall include summaries, interpretations, and analysis of trends of the results of the Radiological Environmental Monitoring Program for the reporting period. The material provided shall be consistent with the objectives outlined in the ODCM, and 10 CFR 50, Appendix I, Sections IV.B.2, IV.B.3, and IV.C.

For Units 2 and 3, the Annual Radiological Environmental Operating Report covering the operation of the unit during the previous calendar year shall be submitted prior to May 15 of each year. The report shall include summaries, interpretations, and analysis of trends of the results of the Radiological Environmental Monitoring Program for the reporting period. The material provided shall be.consistent with the.objectives outlined in the ODCM, and 10 CFR 50, Appendix I, and Sections IV.B.2., IV.B.3, and IV.C. A detailed listing of the requirement of the report is given below:

(a) Results of environmental sampling summarized on a quarterly basis following the format of Regulatory Guide 4.8 Table 1 (December 1975);

(individual sample results will be retained at the station);

....... In the event.that some results are. not available for inclusion with the report, the report shall be submitted noting and explaining the reasons for the missing results. Summaries, interpretations, and analysis of trends of the results are to be provided.

(b) An assessment of the monitoring results and radiation dose via the principal pathways of exposure resulting from plant emissions of radioactivity including the maximum noble gas gamma and beta air doses in the unrestricted area. The assessment of radiation doses shall be performed in accordance with the ODCM.

(c) Results of the census to determine the locations of animals producing milk for human consumption, and the pasture season feeding practices at dairies in the monitoring program.

(d) The reason for the omission if the nearest dairy to the station is not in the monitoring program.

- A single submittal may be made for a multiple unit station, The submittal should combine sections common to all units at the'station.

dn12r1-13.doc 12-61

1. 4. ! - t s-- .

DRESDEN Revision 1.13 December 2001 12.6.2 Reports - (Cont'd)

(e) An annual summary of meteorological conditions concurrent with the releases of gaseous effluents in the form of joint frequency distributions of wind speed, wind direction, and atmospheric stability.

(f) The results of the interlaboratory comparison program described in Section 12.5.3.

(g) The results of the 40 CFR Part 190 uranium fuel cycle dose analysis for each calendar year.

(h) A summary of the monitoring program, including maps showing sampling locations and tables giving distance and direction of sampling locations from the station.

3. Non-Routine Environmental Report (a) If a confirmed measured radionuclide concentration in an environmental sampling medium averaged over any calendar quarter sampling period exceeds the reporting level given in Table 12.5-2 and if the radioactivity is attributable to plant operation, a written report shall be submitted to the.

Regional Administrator of NRC Regional Office, with a copy to the Director, Office of Nuclear Reactor Regulation, within 30 days from the end of the quarter. When more than one of the radionuclides in Table 12.5-2 are detected in the medium, the reporting level shall have been exceeded if TC./(RL)i is equal to or greater than 1 where C is the concentration of the it radionuclide in the medium and RL is the reporting level of radionuclide i.

(b) If radionuclides other than those in Table 12.5-2 are detected and are due to plant effluents, a reporting level is exceeded if thelpotential annual dose to an individual is equal to or greater than the design objective doses of 10 CFR Part 50, Appendix I.

(c) This report shall include an evaluation of any release conditions, environmental factors, or other aspects necessary to explain the anomalous affect.

12.6.3. Offsite Dose Calculation Manual (ODCM)

1. The ODCM shall contain the methodology and parameters used in the calculation of offsite doses due to radioactive gaseous and liquid effluents, in the calculation of gaseous and liquid effluent monitoring alarm and trip setpoints, and in the conduct of the Radiological Environmental Monitoring Program.

2. The ODCM shall also contain the radioactive effluent controls and radiological environmental monitoring activities (described in Section 12.2 - 12.5) and descriptions of the information that should be included in the Annual Radioactive Effluent Release and Radiological Environmental Operating Reports required by Sections 12.6.2.1 and 12.6.2.2.

dnl2r1-13.doc 12-62 I. i..; (II I, h~ I- t*

DRESDEN Revision 1.13 December 2001 12.6.3 Offsite Dose Calculation Manual (ODCM)-(Cont'd)

3. Licensee initiated changes to the ODCM:

(1) Shall be documented and records of reviews performed shall be retained.

This documentation shall contain:

(a) Sufficient information to support the change together with appropriate analyses or evaluations justifying the change(s); and (b) A determination that the change will maintain the level of radioactive effluent control required by 10 CFR Part 20.1302, 40 CFR Part 190, 10 CFR Part 50.36a, and 10 CFR 50, Appendix I, and do not adversely impact the accuracy or reliability of effluent, dose, or set point calculations.

Manager.

(2) Shall become effective after approval of the Unit 2/3 Station

.(3) Shall be submitted to the NRC in the form of a complete, legible copy of the entire ODCM as a part of or concurrent with the Radioactive Effluent Release Report for the period of the report in which any change to the ODCM was made. Each change shall be identified by markings in the margin of the affected pages, clearly indicating the area of the page that was changed, and shall indicate the date (i.e. month and date) the change was implemented.

(Liquid and Gaseous) 12.6.4. Maior Changes to Radioactive Waste Treatment Systems NOTE: This information may be submitted as part of the annual FSAR update.

be made

1. Licensee initiated major changes to the radioactive waste systems may provided:

The change is reported in the Monthly Operating Report for the period in which the evaluation was reviewed by Independent Technical Review. The discussion of each change shall contain:

change (1) A summary of the evaluation that led to the determination that the could be made in accordance with 10 CFR Part 50.59; (2) Sufficient detailed information to support the reason for the change; (3) A detailed description of the equipment, components, and process involved and the interfaces with other plant systems; (4) An evaluation of the change which shows the predicted releases of radioactive materials in liquid and gaseous effluents that differ from those previously predicted in the license application and amendments; (5) A comparison of the predicted releases of radioactive materials in liquid and gaseous effluents to the actual releases for the period in. which the changes were made; dnl2rl-13.doc 12-63

DRESDEN Revision 1. 13 December 2001 12.6.4. Major Chancqes to Radioactive Waste Treatment Systems (Liquid and Gaseous) (Cont'd)

(6) An estimate of the exposure to plant operating personnel as a result of the change; and (7) Documentation of the fact that the change was reviewed and found acceptable by Independent Technical Review.

2. The change shall become effective upon review and acceptance by Independent Technical Review.

dnl2rl-13.doc 12-64 I i

DRESDEN Revision 1.1 July 1994 DRESDEN ANNEX INDEX PAGE REVISION PAGE REVISION APPENDIX F F-i 1.1 F-43 1.1 F-ii 1.1 F-44 1.1 F-iii 1.1 F-45 1.1 F-iv 1.1 F-46 1.1 F-1 1.1 F-47 1.1 F-2 1.1 F-48 1.1 F-3 1.1 F-49 1.1 F-4 1.1 F-5 1.1 F-6 1.1 F-7 1.1 F-8 1.1 F-9 1.1 F-10 1.1 F-11 1.1 F-12 1..

F-13 1.1 F--14 1.1 F-15 1.1 F-16 1.1 F-17 1.1 F-18 1.1 F-19 1.1 F-20 1.1 F-21 1.1 F-22 1.1 F-23 1.1 F-24 1.1 F-25 1.1 F-26 1.1 F-27 1.1 F-28 1.1 F-29 1.1 F-30 1.1 F-31 1.1 F-32 1.1 F-33 1.1 F-34 1.1 F-35 1.1 F-36 1.1 F-37 1.1 F-38 1.1 F-39 1.1 F-40 1.1 F41 1.1 F-42 1.1 F-i

DRESDEN Revision 1.1 July 1994 APPENDIX F STATION-SPECIFIC DATA FOR DRESDEN UNITS 1, 2, AND 3 TABLE OF CONTENTS PAGE F.1 INTRODUCTION F-1 F.2 REFERENCES F-1 DRESDEN I DRESDEN 1, 2, 3 F-ii

DRESDEN Revision 1.1 July 1994 APPENDIX F UST OF TABLES NUMBER TITLE PAGE F-1 Aquatic Environmental Dose Parameters F-2 F-2 Station Characteristics F-3 F-3 Critical Ranges F-4 F-4 Average Wind Speeds F-5 F-5 X/Q and D/Q Maxima At or Beyond the Unrestricted Area Boundary F-6 F-5a XJQ and D/Q Maxima At or Beyond the Restricted Area Boundary F-7 F-6 D/Q at the Nearest Milk Cow and Meat Animal Locations Within 5 Miles F-8 F-7 Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Selected Nuclides F-9 F-7a Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Selected Nuclides F-24 F-8 Parameters for Calculation of N-16 Skyshine Radiation from Dresden 2/3 F-39 Supplemental Tables A Elevated Level Joint Frequency Distribution Table Summary - 300 Foot Elevation Data F-40

-Summary Table of Percent by Direction and Class

-Summary Table of Percent by Direction and Speed

-Summary Table of Percent by Speed and Class B Mixed Mode Joint Frequency Distribution Table Summaries - 150 and 35 Foot Elevation Data F-42

-Summary Table of Percent by Direction and Class

-Summary Table of Percent by Direction and Speed

-Summary Table of Percent by Speed and Class C Ground Level Joint Frequency Distribution Table Summary - 35 Foot Elevation Data F-46

-Summary Table of Percent by Direction and Class

-Summary Table of Percent by Direction and Speed

-Summary Table of Percent by Speed and Class F-iii

DRESDEN Revision 1.1 July 1994 APPENDIX F UST OF FIGURES NUMBER TITLE PAGE F-1 Unrestricted Area Boundary F-48 F-2 Restricted Area Boundary F-49 F-iv

DRESDEN Revision 1.1 July 1994 APPENDIX F STATION-SPECIFIC DATA FOR DRESDEN UNITS 1, 2, AND 3 F.1 INTRODUCTION This appendix contains data relevant to the Dresden site. Included are a diagram of the unrestricted and restricted area boundary and tables of values of parameters used in offsite dose assessment.

F.2 REFERENCES FOR DRESDEN 1

1. "Determination of Radial Distances from Exhaust Stack to Closest Offsite Location," Sargent and Lundy, Analysis and Technology Division, Dresden Calculation ATD-0033, Revision 0, December 26, 1991.

2. "CECo ODCM Appendix F Tables for Dresden 1," Sargent & Lundy, Analysis and Technology Division, Dresden Calculation ATD-0125, Revision 0, June 11, 1992.

REFERENCES FOR DRESDEN 2 and 3

1. Sargent & Lundy, Nuclear Safeguards and Licensing Division, Calculation, "Appendix I Technical Specification Tables," Revision 2, July 10, 1979.

2. "CECo ODCM Appendix F Tables for Dresden 2/3," Sargent & Lundy, Analysis and Technology Division, Dresden Calculation ATD-0145, Revision 0, 1 and 2.

3. 'Verification of Environmental Parameters used for Commonwealth Edison Company's Offsite Dose Calculation," NUS Corporation, 1988.

4. 'Verification of Environmental Parameters used for Commonwealth Edison Company's Offsite Dose Calculation," NUTECH, 1992.

5. "Radial Distance to Restricted Area Boundary," Sargent and Lundy, Analysis and Technology Division, Dresden Calculation ATD-0093, Revision 0, April 24, 1992.

F-1

DRESDEN Revision 1.1 July 1994 Table F-1 Aquatic Environmental Dose Parameters for Dresden 1, 2, 3 General Information' The station liquid discharge flows into the Illinois River. The nearest public potable water intake is at Peoria, 106 river miles downstream of the station.

There is no irrigation occurring on the Kankakee, Des Plaines, or Illinois Rivers downstream of the station.

Recreation includes one or more of the following: boating, waterskiing, swimming, and sport fishing.

Downstream dams on the Illinois River within 50 miles of the station are located as follows:

"*At Dresden Island

"*At Marseilles

"*At Starved Rock This is based on information in Figure 2.2.6-1 of the Dresden Updated Final Safety Analysis Report (update through Rev. 5, June 1987) and in Section 2.4.1.1 and Figure 2.4-2 of the LaSalle Environmental Report.

Water and Fish Inqestion Parameters Parameterb Value 1/Mw, 1/lft, 1.0 Fw, cfs 1.85E4 F', cfs 1.04E4 tf, hrc 24.0 tw, hrd 106.0 Limits on Radioactivity in Unprotected Outdoor Tankse Refer to Section 3.8 of the Technical Specifications of Units 1, 2, and 3.

"This is based on information in the Dresden Station Safety Analysis Report (SAR), Section 2.5, Dresden Station Water Flow Schematic, and Braidwood and LaSalle Stations' collective data.

bThe parameters are defined in Section A.2.1 of Appendix A.

ctf (hr) = 24 hr (all stations) for the fish ingestion pathway dtw (hr) = 106 (distance to Peoria is 106 miles; flow rate of 1 mph assumed)

'See Section A.2.4 of Appendix A.

F-2

DRESDEN Revision 1.1 July 1994 Table F-2 Station Characteristics for Dresden 1, 2, 3 STATION: Dresden Nuclear Power Station LOCATION: Morris, Illinois CHARACTERISTICS OF ELEVATED RELEASE POINT Ul 91.44 m Ul 1.40 m

1) Release Height = U2/3 94.49 m' 2) Diameter = U2/3 3.35 m U1 17.9 ms"la

3) Exit Speed = U2/3 16.6 ms"la 4) Heat Content = 70 KCal s-la I

CHARACTERISTIGS OF VENT STACK RELEASE POINT

1) Release Height = 48.77 m' 2) Diameter 2.74 m

3) Exit Speed = 12.0 ms-la CHARACTERISTICS OF GROUND LEVEL RELEASE

1) Release Height = 0 m

2) Building Factor (D) = 42.8 m' I METEOROLOGICAL DATA A 400 ft Tower is Located 800 m WSW of elevated release point Tower Data Used in Calculations Wind Speed and Differential Release Point Direction Temperature Elevated 300 ft 300-35 ft Vent 150 ft 150-35 ft Ground 35 ft 150-35 ft "Used in calculating the meteorological and dose factors in Tables F-5, F-6, and F-7. See Sections B.3 through B.6 of Appendix B.

F-3

DRESDEN Revision 1.1 July 1994 Table F-3 Critical Ranges Unrestricted Area Restricted Nearest Nearest Dairy Farm Boundarya Area Boundary Resident' Within 5 Milesr Direction (m) (m) (m) (m)

N 768 466 1900 None NNE 1207 698 1300 None NE 1100 646 3700 None ENE 1244 646 1300 None E 1000 689 2900 None ESE 988 661 1600 None SE 1000 664 1000 None SSE 792 744 800 None S 841 814 800 None SSW 853 789 5300 None SW 1024 414 6000 None WSW 1170 360 8000 None W 1756 454 5600 None WNW 1219 469 6000 None NW 756 482 4200 None NNW 671 466 1300 None a Nearest land in unrestricted area. Used in calculating the meteorological dose factors in Tables F-5 and F-7. See Sections B.3 through B.6 of Appendix B.

II b 1993 annual survey by Teledyne Isotopes Midwest Laboratories. The distances are rounded to the nearest conservative 100 meters.

1993 annual milch animal census, by Teledyne Isotopes Midwest Laboratories. Used in calculating the D/Q values in Table F-6. The distances are rounded to the nearest conservative 100 meters. A default value of 8000 meters is used when there are no dairies within 5 miles.

F-4

DRESDEN Revision 1.1 July 1994 Table F-4 Average Wind Speeds for Dresden 1, 2, and 3 Downwind Average Wind Speed (m/sec)"

Direction Elevated Mixed Modeb Ground Level N 7.3 5.5 4.3 NNE 7.4 5.3 4.1 NE 6.9 5.0 3.7 ENE 6.4 4.9 4.0 E 7.1 5.3 4.1 ESE 7.2 5.3 4.1 SE 6.4 5.1 3.7 SSE 6.4 4.8 3.4 S 5.9 4.4 3.1 SSW 5.9 4.5 3.0 SW 5.7 4.4 3.0 WSW 5.1 4.0 2.8 W 5.5 4.4 3.2 WNW 5.9 4.4 3.0 NW 5.7 4.4 3.4 NNW 6.3 4.9 3.8 a Based on Dresden site meteorological data, January 1978 through December 1987. Calculated in References 3 (unit 1) and 2 (units 2/3) of Section F.2 using formulas in Section B.1.3 of Appendix B.

b The mixed mode values apply only to Dresden 2/3. Mixed mode values are not needed for Dresden 1 since there is no mixed mode release point.

F-5

w DRESDEN Revision 1.1 July 1994 Table F-5 XIQ and DIQ Maxima at or Beyond the Unrestdcted Area Boundary Downwind Etevated(Stack) ReLease Mixed Mode(Vent) Retease Ground LeveL Retease Direction Radius X/Q Radius D/Q Radius X/O D/I Radius X/Q D/O (meters) (sec/m**3) (meters) ( 1/m**2) (meters) (sec/m**3) (1/m**2) (meters) (sec/m**3) (1/m*'2)

N 4400. 1.470E-08 768. 8.955E-10 768. 4.752E-07 6.331E-09 768. 3.363E-06 1.840E-08 NNE 4023. 1.502E-08 1207. 8.387E-10 1207. 2.440E-07 3.028E-09 1207. 1.565E-06 8.011E-09 NE 4400. 1.231E-08 1100. 7.495E-10 1100. 2.409E-07 2.716E-09 1100. 1.805E-06 7.715E-09 ENE 4023. 1.100E-08 1244. 6.629E-10 1244. 1.370E-07 1.982E-09 1244. 8.865E-07 4.617E-09 E 3600. 1.517E-08 1000. 1.036E-09 1000. 3.326E-07 4.215E-09 1000. 1.983E-06 1.114E-08 ESE 3600. 1.417E-08 988. 1.104E-09 988. 2.741E-07 3.956E-09 988. 1.914E-06 1.042E-08 SE 3600. 1.350E-08 1000. 1.111E-09 1000. 2.357E-07 3.527E-09 1000. 2.027E-06 9.865E-09 SSE 3219. 1.298E-08 792. 1.257E-09 792. 2.876E-07 4.369E-09 792. 2.725E-06 1.248E-08 S 4023. 9.552E-09 841. 8.039E-10 841. 1.891E-07 2.719E-09 841. 2.060E-06 8.371E-09 SSW 4023. 9.123E-09 853. 7.329E-10 853. 1.900E-07 2.436E-09 853. 1.923E-06 7.879E-09 SW 4400. 1.085E-08 1024. 6.659E-10 1024. 1.538E-07 1.887E-09 1024. 1.639E-06 6.659E-09 WSW 4400. 1.232E-08 1170. 6.123E-10 1170. 1.207E-07 1.339E-09 1170. 1.162E-06 4.615E-09 W 4828. 1. 105E-08 1756. 4.566E-10 1756. 1.190E-07 1.028E-09 1756. 7.763E-07 3.122E-09 WNW 4828. 8.765E-09 1219. 4.387E-10 1219. 1.833E-07 1.685E-09 1219. 1.798E-06 6.402E-09 NW 4828. 9.337E-09 756. 5.904E-10 756. 2.478E-07 2.791E-09 756. 2.391E-06 1.070E-08 NNW 4400. 1.083E-08 671. 6.750E- 10 671. 4.310E-07 5.167E-09 671. 3.546E-06 1.901E-08 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 Note: Based on Reference 2 of Section F.2 and the formulas in Sections B.3 and B.4 of Appendix B.

Used for beta air, beta skin, and inhalation dose pathways. See sections A.1.2, A.1.3 and A.1.4.2 of Appendix A. Used for produce and leafy vegetable pathways. See A.1.4 of Appendix A.

F-6

DRESDEN Revision 1.1 July 1994 Table F-5a XIQ and DIQ Maxima at or Beyond the Restricted Area Boundary Downwind Elevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Radius X/O Radius D/Q Radius X/Q D/Q Radius X/O D/Q (meters) (sec/m**3) (meters) (1/m**2) (meters) (sec/m**3) (1/m*'2) (meters) (sec/m**3) (1/m**2)

N 4400. 1.470E- 08 466. 1.046E- 09 466. 9.968E-07 1.232E-08 466. 7.375E-06 4.036E-08 698. 1.051E-09 698. 5.152E-07 6.619E-09 698. 3.645E-06 1.961E-08 NNE 4023. 1.502E-08 646. 4.202E-06 1.827E-08 4400. 1.231E-08 646. 9.588E-10 646. 5.276E-07 5.692E-09 NE 646. 2.474E-06 1.345E-08 4023. 1. 1OOE-08 646. 8.886E-10 646. 3.461E-07 4.918E-09 ENE 7.074E-09 689. 3.492E-06 2.040E-08 E 3600. 1.517E-08 689. 1.217E-09 689. 5.525E-07 661. 1.341E-09 661. 4.830E-07 6.936E-09 661. 3.564E-06 1.997E-08 ESE 3600. 1.417E-08 1.916E-08 664. 1.385E-09 664. 4.187E-07 6.112E-09 664. 3.877E-06 SE 3600. 1.350E-08 744. 3.016E-06 1.380E-08 3219. 1.298E-08 744. 1.299E-09 744. 3.153E-07 4.734E-09 SSE 814. 2.165E-06 8.827E-09 4023. 9.552E-09 814. 8.181E-10 814. 1.977E-07 2.834E-09 S 789. 2.169E-06 8.941E-09 4023. 9.123E-09 789. 7.631E-10 789. 2.111E-07 2.694E-09 SSW 5.193E-07 5.643E-09 414. 6.356E-06 2.796E-08 SW 4400. 1.085E-08 420. 8.897E-10 414.

7.963E-10 360. 5.431E-07 5.055E-09 360. 7.095E-06 2.980E-08 WSW 4400. 1.232E- 08 420.

454. 6.582E-10 454. 454. 5.859E-06 2.829E-08 W 4828. 1.105E-08 5.736E-07 5.881E-09 469. 8.176E-06 2.969E-08 4828. 8.765E-09 469. 6.124E-10 469. 7.098E-07 5.907E-09 WNW 4.835E-09 482. 4.860E-06 2.173E-08 4828. 9.337E-09 482. 6.915E-10 482. 4.885E-07 NW 8.268E-09 466. 6.214E-06 3.358E-08 4400. 1.083E-08 466. 7.491E-10 466. 7.327E-07 NNW DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-7

DRESDEN Revision 1.1 July 1994 Table F-6 DIQ at the Nearest Milk Cow and Meat Animal Locations within 5 miles Downwind Nearest Milk Cow D/Q(1/m*' k2) Nearest Meat Animal D/Q(l/m**2)

Direction Radius Elevated Mixed Ground Radius Elevated Mixed Gro'und (meters) Release Release Release (meters) Release Release Release N 8000. 1.073E-10 1.533E-10 3.231E-10 2300. 5.089E-10 1.232E-09 2.916E-09 NNE 8000. 1.103E-10 1.411E-10 2.954E- 10 8000. 1.103E-10 1.411E-10 2.954E-10 NE 8000. 9.092E-11 1.115E-10 2.434E-10 7700. 9.687E-11 1.191E-10 2.607E-10 ENE 8000. 8.435E-11 9.923E-11 1.792E-10 7600. 9.183E-11 1.083E-10 1.965E-10 E 8000. 1.282E-10 1.521E-10 3.011E-10 8000. 1.282E-10 1.521E-10 3.011E-10 ESE 8000. 1.241E-10 1.363E-10 2.759E-10 8000. 1.241E-10 1.363E-10 2.759E-10 SE 8000. 1.146E-10 1.308E-10 2.665E-10 8000. 1.146E-10 1.308E-10 2.665E-10 SSE 8000. 1.126E-10 1.213E-10 2.303E-10 8000. 1.126E-10 1.213E-10 2.303E-10 S 8000. 7.758E-11 8.690E-11 1.703E-10 6100. 1.190E-10 1.374E-10 2.771E-10 SSW 8000. 7.408E-11 7.845E-11 1.640E-10 4300. 1.837E-10 2.214E-10 4.965E-10 SW 8000. 8.618E-11 8.357E-11 1.870E-10 8000. 8.618E-11 8.357E-11 1.870E-10 WSW 8000. 9.051E-11 7.512E-11 1.615E-10 8000. 9.051E-11 7.512E-11 1.615E-10 w 8000. 7.826E-11 9.150E-11 2.177E-10 800. 5.665E-10 2.944E-09 1.160E-08 WNW 8000. 5.945E-11 8.480E-11 2.401E-10 800. 5.121E-10 3.015E-09 1.280E-08 NW 8000. 6.284E-11 7.514E-11 1.832E-10 800. 5.753E-10 2.596E-09 9.768E-09 NNW 8000. 7.599E-11 1.095E-10 2.688E-10 1600. 5.010E-10 1.505E-09 4.520E-09 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 Note: Based on Reference 2 of Section F.2 and the formulas in Section B.4 of Appendix B.

F o

DRESDEN Revision 1.1 July 1994 Table F-7 Maxinum Offsite Finite Plume Gamma Dose Factors Based on I cm Depth at the Unrestricted Area Boundary for Kr-83m Downwind Unrestricted Etevated(Staack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrai d/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 1.111E-06 8.3T7E-07 768. 5.804E-05 4.377E-05 768. 3.601E-04 2.715E-04 NNE 1207. 1207. 1.254E-06 9.453E-07 1207. 2.901E-05 2.188E-05 1207. 1.645E-04 1.240E-04 NE 1100. 1100. 1.062E-06 8.010E-07 1100. 2.861E-05 2.157E-05 1100. 1.855E-04 1.399E-04 ENE 1244. 1244. 1.018E-06 7.677E-07 1244. 1.595E-05 1.202E-05 1244. 8.930E-05 6.733E-05 E 1000. 1000. 1.301E-06 9.808E-07 1000. 3.900E-05 2.941E-05 1000. 2.092E-04 1.577E-04 ESE 988. 988. 1.336E-06 1.007E-06 988. 3.237E-05 2.441E-05 988. 2.005E--04 1.512E-04 SE 1000. 1000. 1.414E-06 1.066E-06 1000. 2.828E-05 2.133E-05 1000. 2.078E-04 1.567E-04 SSE 792. 792. 1.538E-06 1.160E-06 792. 3.462E-05 2.610E-05 792. 2.798E-04 2.11OE-04 S 841. 841. 1.095E-06 8.259E-07 841. 2.335E-05 1.761E-05 841. 2.124E-04 1.601E-04 SSW 853. 853. 1.009E-06 7.606E-07 853. 2.332E-05 1.759E-05 853. 1.978E-04 1.491E-04 SW 1024. 1024. 8.474E-07 6.389E-07 1024. 1.920E-05 1.448E-05 1024. 1.648E-04 1.243E-04 WSW 1170. 1170. 8.268E-07 6.234E-07 1170. 1.520E-05 1. 146E-05 1170. 1.147E-04 8.650E-05 W 1756. 1756. 8.303E-07 6.261E-07 1756. 1.322E-05 9.966E-06 1756. 7.461E-05 5.626E-05 WNW 1219. 1219. 6.944E-07 5.236E-07 1219. 2.191E-05 1.652E-05 1219. 1.789E-04 1.349E-04 NW 756. 756. 7.464E-07 5.628E-07 756. 3.036E-05 2.289E-05 756. 2.549E-04 1.922E-04 NNW 671. 671. 7.749E-07 5.843E-07 671. 5.274E-05 3.977E-05 671. 3.846E-04 2.900E-04 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 Note: Based on References 1 and 2 of Section F.2 and the formulas in Sections B.5 and B.6 of Appendix B.

F-9

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on I cm Depth at the Unrestricted Area Boundary for Kr-85m Downwind Unrestricted Etevated(Stack) Release Mixed Mode(Vent) Release Direction Area Bound Radius Ground Level Release S SBAR Radius V VBAR Radius G (meters) (meters) (mrad/yr)/(uCi/sec) GBAR (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 1.399E-04 1.354E-04 768. 6.020E-04 5.795E-04 NNE 768. 1.896E-03 1.815E-03 1207. 1207. 9.359E-05 9.053E-05 1207. 3.303E-04 3.181E-04 NE 1207. 9.659E-04 9.257E-04 1100. 1100. 9.061E-05 8.765E-05 1100. 3.296E-04 3.175E-04 1100. 1.053E-03 1.009E-03 ENE 1244. 1244. 7.359E-05 7.118E-05 1244. 2.088E-04 2.012E-04 1244. 5.484E-04 5.257E-04 E 1000. 1000. 1.064E-04 1.030E-04 1000. 4.299E-04 4.140E-04 1000.

ESE 988. 1.216E-03 1.165E-03 988. 9.782E-05 9.462E-05 988. 3.568E-04 3.436E-04 988. 1.154E-03 SE 1000. 1000. 1.106E-03 9.428E-05 9.118E-05 1000. 3.260E-04 3.140E-04 1000. 1.186E-03 1.136E-03 SSE 792. 792. 1.046E-04 1.012E-04 792. 3.889E-04 3.745E-04 792.

S 841. 1.497E-03 1.433E-03 841. 8.695E-05 8.411E-05 841. 3.045E-04 2.934E-04 841. 1.207E-03 SSW 853. 1.156E-03 853. 8.163E-05 7.896E-05 853. 2.929E-04 2.823E-04 853. 1.118E-03 1.071E-03 SW 1024. 1024. 7.425E-05 7.182E-05 1024. 2.735E-04 2.637E-04 1024. 1.008E-03 9.664E-04 WSW 1170. 1170. 7.278E-05 7.041E-05 1170. 2.394E-04 2.309E-04 1170. 7.281E-04 W

6.982E-04 1756. 1756. 4.764E-05 4.607E-05 1756. 1.734E-04 1.671E-04 1756. 5.186E-04 4.977E-04 WNW 1219. 1219. 5.560E-05 5.379E-05 1219. 2.513E-04 2.420E-04 1219. 1.060E-03 1.016E-03 NW 756. 756. 9.757E-05 9.441E-05 756. 3.808E-04 3.669E-04 756. 1.353E-03 1.295E-03 NNW 671. 671. 1.240E-04 1.200E-04 671. 5.578E-04 5.371E-04 671. 1.955E-03 1.871E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Kr-85 Downwind Unrestricted Elevated(Stack) Retease Mixed Mode(Vent) Retease Ground Lever Retease Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 1.955E-06 1.890E-06 768. 6.993E-06 6.763E-06 768. 2.088E-05 2.019E-05 NNE 1207. 1207. 1.281E-06 1.239E-06 1207. 3.867E-06 3.740E-06 1207. 1.077E-05 1.041E-05 NE 1100. 1100. 1.253E-06 1.212E-06 1100. 3.897E-06 3.768E-06 1100. 1.187E-05 1.147E-05 ENE 1244. 1244. 1.020E-06 9.860E-07 1244. 2.489E-06 2.407E-06 1244. 6.226E-06 6.021E-06 E 1000. 1000. 1.472E-06 1.424E-06 1000. 5.039E-06 4.873E-06 1000. 1.354E-05 1.309E-05 ESE 988. 988. 1.348E-06 1.304E-06 988. 4.188E-06 4.050E-06 988. 1.287E-05 1.245E-05 SE 1000. 1000. 1.300E-06 1.257E-06 1000. 3.825E-06 3.698E-06 1000. 1.330E-05 1.286E-05 SSE 792. 792. 1.448E-06 1.400E-06 792. 4.575E-06 4.424E-06 792. 1.663E-05 1.608E-05 S 841. 841. 1.240E-06 1.199E-06 841. 3.624E-06 3.504E-06 841. 1.358E-05 1.313E-05 SSW 853. 853. 1.157E-06 1.119E-06 853. 3.469E-06 3.354E-06 853. 1.252E-05 1.210E-05 SW 1024. 1024. 1.047E-06 1.012E-06 1024. 3.279E-06 3.170E-06 1024. 1.141E-05 1.104E-05 WSW 1170. 1170. 1.022E-06 9.885E-07 1170. 2.863E-06 2.769E-06 1170. 8.279E-06 8.006E-06 W 1756. 1756. 6.701E-07 6.480E-07 1756. 2.062E-06 1.994E-06 1756. 5.967E-06 5.770E-06 WNW 1219. 1219. 7.759E-07 7.503E-07 1219. 2.953E-06 2.856E-06 1219. 1.208E-05 1. 168E-05 NW 756. 756. 1.375E-06 1.330E-06 756. 4.511E-06 4.362E-06 756. 1.501E-05 1.451E-05 NNW 671. 671. 1.750E-06 1.692E-06 671. 6.521E-06 6.306E-06 671. 2.132E-05 2.062E-05 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-1 I

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Kr-87 Downwind Unrestricted Elevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GRAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 6.917E-04 6..720E-04 768. 2.070E-03 2.010E-03 768. 5.546E-03 5.385E-03 NNE 1207. 1207. 4.420E-04 4.294E-04 1207. 1. 116E-03 1.084E-03 1207. 2.791E-03 2.710E-03 NE 1100. 1100. 4.363E-04 4.239E-04 1100. 1 .1 16E-03 1.083E-03 1100. 2.958E-03 2.872E-03 ENE 1244. 1244. 3.520E-04 3.419E-04 1244. 7.110E-04 6.905E-04 1244. 1.547E-03 1.502E-03 E 1000. 1000. 5.151E-04 5.004E-04 1000. 1.453E-03 1.411E-03 1000. 3.526E-03 3.423E-03 ESE 988. 988. 4.711E-04 4.577E-04 988. 1.210E-03 1.176E-03 988. 3.332E-03 3.236E-03 SE 1000. 1000. 4.545E-04 4.416E-04 1000. 1.122E-03 1.089E-03 1000. 3.382E-03 3.283E-03 SSE 792. 792. 5.140E-04 4.994E-04 792. 1.351E-03 1.312E-03 792. 4.329E-03 4.203E-03 S 841. 841. 4.278E-04 4.157E-04 841. 1.065E-03 1.034E-03 841. 3.397E-03 3.298E-03 SSW 853. 853. 4.031E-04 3.916E-04 853. 1.018E-03 9.886E-04 853. 3.178E-03 3.086E-03 SW 1024. 1024. 3.642E-04 3.538E-04 1024. 9.449E-04 9.177E-04 1024. 2.821E-03 2.739E-03 WSW 1170. 1170. 3.548E-04 3.447E-04 1170. 8.290E-04 8.051E-04 1170. 2.035E-03 1.976E-03 W 1756. 1756. 2.2 11E-04 2.148E-04 1756. 5.761E-04 5.595E-04 1756. 1.444E-03 1.402E-03 WNW 1219. 1219. 2.687E-04 2.610E-04 1219. 8.507E-04 8.261E-04 1219. 2.919E-03 2.834E-03 NW 756. 756. 4.925E-04 4.785E-04 756. 1.328E-03 1.289E-03 756. 3.891E-03 3.778E-03 NNW 671. 671. 6.252E-04 6.074E-04 671. 1.931E-03 1.875E-03 671. 5.80BE-03 5.639E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F ")

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Kr-88 Downwind Unrestricted ELevated(Stack) ReLease Direction Area Bound Radius S SBAR Mixed Mode(Vent) Release Radius V VBAR Ground Level ReLease Radius G GBAR (meters) (mrad/yr)/(uCi/sec) r (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 1.798E-03 1.750E-03 768. 5.062E-03 4.922E-03 768. 1.364E-02 1.325E-02 NNE 1207. 1207. 1.145E-03 1.115E-03 1207. 2.773E-03 2.696E-03 1207. 6.973E-03 6.774E-03 NE 1100. 1100. 1.134E-03 1.104E-03 1100. 2.790E-03 2.713E-03 1100. 7.521E-03 7.305E-03 ENE 1244. 1244. 9.211E-04 8.966E-04 1244. 1.790E-03 1.741E-03 1244. 3.954E-03 3.841E-03 E 1000. 1000. 1.337E-03 1.301E-03 1000. 3.603E-03 3.504E-03 1000. 8.777E-03 8.526E-03 ESE 988. 988. 1.221E-03 1.189E-03 988. 3.006E-03 2.923E-03 988. 8.327E-03 8.089E-03 SE 1000. 1000. 1.18OE-03 1.149E-03 1000. 2.775E-03 2.699E-03 1000. 8.529E-03 8.284E-03 SSE 792. 792. 1.333E-03 1.297E-03 792. 3.341E-03 3.250E-03 792. 1.079E-02 1.048E-02 841. 841. 1.141E-03 1.110E-03 841. 2.653E-03 2.580E-03 841. 8.637E-03 8.389E-03 ssS 2.458E-03 853. 8.016E-03 7.780E-03 SSW 853. 853. 1.067E-03 1.038E-03 853. 2.528E-03 SW 1024. 1024. 9.589E-04 9.335E-04 1024. 2.381E-03 2.316E-03 1024. 7.206E-03 7.OOOE-03 WSW 1170. 1170. 9.327E-04 9.079E-04 1170. 2.083E-03 2.026E-03 1170. 5.217E-03 5.068E-03 W 1756. 1756. 5.907E-04 5.749E-04 1756. 1.464E-03 1.424E-03 1756. 3.745E-03 3.638E-03 WNW 1219. 1219. 7.062E-04 6.874E-04 1219. 2.122E-03 2.063E-03 1219. 7.530E-03 7.314E-03 NW 756. 756. 1.283E-03 1.249E-03 756. 3.288E-03 3.198E-03 756. 9.693E-03 9.414E-03 NNW 671. 671. 1.627E-03 1.584E-03 671. 4.738E-03 4.608E-03 671. 1.410E-02 1.369E-02 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-1 3

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on I cm Depth at the Unrestricted Area Boundary for Kr-89 Downwind Unrestricted Etevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 8.646E-04 8.402E-04 768. 2.184E-03 2.122E-03 768. 3.839E-03 3.729E-03 NNE 1207. 1207. 4.473E-04 4.346E-04 1207. 7.989E-04 7.761E-04 1207. 1.144E-03 1.111E-03 NE 1100. 1100. 4.367E-04 4.243E-04 1100. 8.040E-04 7.811E-04 1100. 1.199E-03 1.165E-03 ENE 1244. 1244. 2.952E-04 2.869E-04 1244. 4.535E-04 4.405E-04 1244. 5.737E-04 5.573E-04 E 1000. 1000. 5.470E-04 5.316E-04 1000. 1.225E-03 1.190E-03 1000. 1.926E-03 1.871E-03 ESE 988. 988. 5. 116E -04 4.972E-04 988. 1.030E-03 1.OOOE-03 988. 1.737E-03 1.687E-03 SE 1000. 1000. 4.765E-04 4.631E-04 1000. 9.283E-04 9.017E-04 1000. 1.559E-03 1.514E-03 SSE 792. 792. 6.139E-04 5.966E-04 792. 1.268E-03 1.231E-03 792. 2.376E-03 2.308E-03 S 841. 841. 4.316E-04 4.195E-04 841. 8.997E-04 8.740E-04 841. 1.470E-03 1.428E-03 SSW 853. 853. 4.106E-04 3.990E-04 853. 8.384E-04 8.145E-04 853. 1.447E-03 1.405E-03 SW 1024. 1024. 3.383E-04 3.288E-04 1024. 6.604E-04 6.415E-04 1024. 1.090E-03 1.059E-03 WSW 1170. 1170. 2.800E-04 2.721E-04 1170. 4.872E-04 4.732E-04 1170. 6.582E-04 6.393E-04 W 1756. 1756. 1.180E -04 1.147E-04 1756. 2.232E-04 2.168E-04 1756. 2.784E-04 2.704E-04 WNW 1219. 1219. 2.179E-04 2.118E-04 1219. 5.131E-04 4.984E-04 1219. 9.315E-04 9.048E-04 NW 756. 756. 5.630E-04 5.471E-04 756. 1.241E-03 1.206E-03 756. 2.287E-03 2.221E-03 NNW 671. 671. 7.830E-04 7.610E-04 671. 2.075E-03 2.016E-03 671. 4.479E-03 4.350E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-14

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Kr-90 Downwind Unrestricted Etevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Radius V VBAR Radius G GBAR Direction Area Bound Radius S SBAR (meters) (mradlyr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

(meters) (meters) (mrad/yr)/(uCi/sec) 768. 768. 1.568E-04 1.522E-04 768. 2.579E-04 2.501E-04 768. 2.558E-04 2.480E-04 2.476E-05 N 1207. 3.215E-05 3.11BE-05 1207. 2.553E-05 NNE 1207. 1207. 3.689E-05 3.581E-05 2.435E-05 1100. 3.434E-05 3.331E-05 1100. 2.511E-05 NE 1100. 1100. 3.809E-05 3.697E-05 1.141E-05 1244. 1.571E-05 1.524E-05 1244. 1.176E-05 ENE 1244. 1244. 1.660E-05 1.611E-05 1000. 6.596E-05 6.396E-05 5.925E-05 5.751E-05 1000. 7.864E-05 7.628E-05 E 1000. 1000. 988. 6.042E-05 5.858E-05 988. 5.808E-05 5.637E-05 988. 6.960E-05 6.751E-05 ESE 988. 1000. 4.271E-05 4.142E-05 1000. 4.406E-05 4.276E-05 1000. 5.157E-05 5.003E-05 SE 1000. 792. 8.990E-05 8.717E-05 792. 792. 8.809E-05 8.550E-05 792. 1.063E-04 1.032E-04 SSE 5.547E-05 841. 4.271E-05 4.142E-05 841. 841. 4.794E-05 4.653E-05 841. 5.718E-05 S 5.OOOE-05 853. 3.559E-05 3.451E-05 853. 853. 4.498E-05 4.366E-05 853. 5.154E-05 SSW 2.292E-05 1024. 1.401E-05 1.359E-05 1024. 1024. 2.322E-05 2.254E-05 1024. 2.362E-05 SW 1170. 4.127E-06 4.002E-06 1170. 1.048E-05 1.018E-05 1170. 8.515E-06 8.260E-06 WSW 1170. 1.484E-06 1756. 7.900E-07 7.660E-07 1756. 1756. 1.866E-06 1.811E-06 1756. 1.530E-06 W 1.162E-05 1.127E-05 1219. 7.712E-06 7.478E-06 1219. 1219. 1.141E-05 1.108E-05 1219.

WNW 756. 9.619E-05 9.331E-05 756. 9.617E-05 9.325E-05 NW 756. 756. 7.050E-05 6.843E-05 671. 3.058E-04 2.965E-04 671. 1.395E-04 1.354E-04 671. 2.516E-04 2.440E-04 NNW 671.

DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-1 5

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on I cm Depth at the Unrestricted Area Boundary for Xe-131m Downwind Unrestricted Etevated(Stack) Retease Mixed Mode(Vent) Retease Ground Level Retease Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uci/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 3.860E-06 3.549E-06 768. 5.875E-05 4.699E-05 768. 3.373E-04 2.627E-04 NNE 1207. 1207. 2.996E-06 2.686E-06 1207. 3.052E-05 2.450E-05 1207. 1.588E-04 1.241E-04 NE 1100. 1100. 2.780E-06 2.510E-06 1100. 3.055E-05 2.453E-05 1100. 1.832E-04 1.429E-04 ENE 1244. 1244. 2.389E-06 2.138E-06 1244. 1.775E-05 1.433E-05 1244. 9.009E-05 7.042E-05 E 1000. 1000. 3.301E-06 2.974E-06 1000. 4.098E-05 3.284E-05 1000. 2.011E-04 1.571E-04 ESE 988. 988. 3.141E-06 2.814E-06 988. 3.367E-05 2.700E-05 988. 1.935E-04 1.511E-04 SE 1000. 1000. 3.130E-06 2.790E-06 1000. 2.958E-05 2.377E-05 1000. 2.037E-04 1.589E-04 SSE 792. 792. 3.440E-06 3.070E-06 792. 3.584E-05 2.877E-05 792. 2.679E-04 2.087E-04 S 841. 841. 2.742E-06 2.468E-06 841. 2.515E-05 2.034E-05 841. 2.097E-04 1.636E-04 SSW 853. 853. 2.552E-06 2.299E-06 853. 2.495E-05 2.014E-05 853. 1.939E-04 1.512E-04 SW 1024. 1024. 2.264E-06 2.047E-06 1024. 2.129E-05 1.730E-05 1024. 1.655E-04 1.294E-04 WSW 1170. 1170. 2.221E-06 2.008E-06 1170. 1.748E-05 1.427E-05 1170. 1.168E-04 9.138E-05 W 1756. 1756. 1.707E-06 1.508E-06 1756. 1.464E-05 1.183E-05 1756. 7.787E-05 6.110E-05 WNW 1219. 1219. 1.748E-06 1.573E-06 1219. 2.310E-05 1.855E-05 1219. 1.829E-04 1.428E-04 NW 756. 756. 2.670E-06 2.458E-06 756. 3.276E-05 2.642E-05 756. 2.430E-04 1.892E-04 NNW 671. 671. 3.255E-06 3.020E-06 671. 5.352E-05 4.285E-05 671. 3.526E-04 2.744E-04 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F,4 A

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Xe-1 33m Downwind Unrestricted ELevated(Stack) ReLease Mixed Mode(Vent) ReLease Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 2.077E-05 1.991E-05 768. 1.316E-04 1.171E-04 768. 5.699E-04 4.854E-04 NNE 1207. 1207. 1.432E-05 1.364E-05 1207. 7.079E-05 6.329E-05 1207. 2.781E-04 2.384E-04 NE 1100. 1100. 1.375E-05 1.312E-05 1100. 7.088E-05 6.337E-05 1100. 3.146E-04 2.689E-04 ENE 1244. 1244. 1. 132E-05 1.078E-05 1244. 4.336E-05 3.901E-05 1244. 1.587E-04 1.362E-04 E 1000. 1000. 1.617E-05 1.542E-05 1000. 9.343E-05 8.334E-05 1000. 3.512E-04 3.009E-04 ESE 988. 988. 1.497E-05 1.425E-05 988. 7.719E-05 6.890E-05 988. 3.362E-04 2.878E-04 SE 1000. 1000. 1.453E-05 1.382E-05 1000. 6.921E-05 6.194E-05 1000. 3.510E-04 3.001E-04 SSE 792. 792. 1.607E-05 1.529E-05 792. 8.308E-05 7.427E-05 792. 4.526E-04 3.856E-04 S 841. 841. 1.335E-05 1.273E-05 841. 6.223E-05 5.608E-05 841. 3.601E-04 3.077E-04 SSW 853. 853. 1.248E-05 1.190E-05 853. 6.060E-05 5.449E-05 853. 3.327E-04 2.842E-04 SW 1024. 1024. 1.128E-05 1.077E-05 1024. 5.478E-05 4.959E-05 1024. 2.917E-04 2.504E-04 WSW 1170. 1170. 1.106E-05 1.056E-05 1170. 4.676E-05 4.251E-05 1170. 2.081E-04 1.790E-04 W 1756. 1756. 7.554E-06 7.162E-06 1756. 3.599E-05 3.241E-05 1756. 1.432E-04 1.239E-04 WNW 1219. 1219. 8.502E-06 8.106E-06 1219. 5.377E-05 4.810E-05 1219. 3.164E-04 2.707E-04 NW 756. 756. 1.446E-05 1.386E-05 756. 7.908E-05 7.105E-05 756. 4.100E-04 3.491E-04 NNW 671. 671. 1.823E-05 1.751E-05 671. 1.211E-04 1.079E-04 671. 5.909E-04 5.025E-04 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-1 7

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Xe-133 Downwind Unrestricted Etevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 1.874E-05 1.809E-05 768. 1.481E-04 1.356E-04 768. 6.304E-04 5.584E-04 NNE 1207. 1207. 1.362E-05 1.308E-05 1207. 7.994E-05 7.347E-05 1207. 3.114E-04 2.775E-04 NE 1100. 1100. 1.279E-05 1.230E-05 1100. 7.969E-05 7.322E-05 1100. 3.505E-04 3.114E-04 ENE 1244. 1244. 1.062E-05 1.019E-05 1244. 4.887E-05 4.512E-05 1244. 1.780E-04 1.588E-04 E 1000. 1000. 1.507E-05 1.448E-05 1000. 1.055E-04 9.682E-05 1000. 3.930E-04 3.500E-04 ESE 988. 988. 1.406E-05 1.350E-05 988. 8.706E-05 7.992E-05 988. 3.755E-04 3.341E-04 SE 1000. 1000. 1.367E-05 1.311E-05 1000. 7.806E-05 7.179E-05 1000. 3.909E-04 3.474E-04 SSE 792. 792. 1.491E-05 1.430E-05 792. 9.314E-05 8.555E-05 792. 5.002E-04 4.430E-04 S 841. 841. 1.201E-05 1.154E-05 841. 6.991E-05 6.460E-05 841. 4.011E-04 3.563E-04 SSW 853. 853. 1.126E-05 1.082E-05 853. 6.822E-05 6.295E-05 853. 3.704E-04 3.290E-04 SW 1024. 1024. 1.031E-05 9.919E-06 1024. 6.164E-05 5.715E-05 1024. 3.280E-04 2.926E-04 WSW 1170. 1170. 1.020E-05 9.811E-06 1170. 5.274E-05 4.906E-05 1170. 2.347E-04 2.097E-04 W 1756. 1756. 7.325E-06 7.009E-06 1756. 4.041E-05 3.732E-05 1756. 1.627E-04 1.460E-04 WNW 1219. 1219. 7.875E-06 7.566E-06 1219. 6.054E-05 5.564E-05 1219. 3.538E-04 3.147E-04 NW 756. 756. 1.282E-05 1.237E-05 756. 8.885E-05 8.193E-05 756. 4.536E-04 4.018E-04 NNW 671. 671. 1.609E-05 1.556E-05 671. 1.356E-04 1.242E-04 671. 6.514E-04 5.762E-04 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F, 4 q

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Xe-135m Downwind Unrestricted Elevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 3.231E-04 3.124E-04 768. 1.124E-03 1.085E-03 768. 2.824E-03 2.720E-03 NNE 1207. 1207. 2.031E-04 1.964E-04 1207. 5.521E-04 5.329E-04 1207. 1.269E-03 1.222E-03 NE 1100. 1100. 1.979E-04 1.914E-04 1100. 5.468E-04 5.279E-04 1100. 1.305E-03 1.257E-03 ENE 1244. 1244. 1.536E-04 1.485E-04 1244. 3.362E-04 3.247E-04 1244. 6.595E-04 6.355E-04 E 1000. 1000. 2.367E-04 2.288E-04 1000. 7.41 1E-04 7.153E-04 1000. 1.693E-03 1.631E-03 ESE 988. 988. 2.177E-04 2.105E-04 988. 6.173E-04 5.958E-04 988. 1.571E-03 1.514E-03 SE 1000. 1000. 2.084E-04 2.015E-04 1000. 5.726E-04 5.528E-04 1000. 1.533E-03 1.477E-03 SSE 792. 792. 2.399E-04 2.320E-04 792. 7.020E-04 6.777E-04 792. 2.066E-03 1.990E-03 S 841. 841. 1.838E-04 1. 777E -04 841. 5.365E-04 5.180E-04 841. 1.480E-03 1.426E-03 SSW 853. 853. 1.761E-04 1.702E-04 853. 5.143E-04 4.966E-04 853. 1.442E-03 1.389E-03 SW 1024. 1024. 1.595E-04 1.542E-04 1024. 4.548E-04 4.392E-04 1024. 1.217E-03 1.173E-03 WSW 1170. 1170. 1.518E-04 1.468E-04 1170. 3.897E-04 3.764E-04 1170. 8.550E-04 8.240E-04 W 1756. 1756. 8.725E-05 8.434E-05 1756. 2.491E-04 2.405E-04 1756. 5.456E-04 5.260E-04 WNW 1219. 1219. 1.152E-04 1.114E-04 1219. 4.090E-04 3.949E-04 1219. 1.225E-03 1.180E-03 NW 756. 756. 2.251E-04 2.177E-04 756. 6.857E-04 6.621E-04 756. 1.873E-03 1.804E-03 NNW 671. 671. 2.899E-04 2.803E-04 671. 1.043E-03 1.007E-03 671. 3.115E-03 3.OOOE-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-1 9

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maxinum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Xe-135 Downwind Unrestricted Elevated(Stack) Release Mixed Mode(Vent) Retease Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 1.977E-04 1.913E-04 768. 8.258E-04 7.984E-04 768. 2.561E-03 2.473E-03 NNE 1207. 1207. 1.320E-04 1.277E-04 1207. 4.556E-04 4.406E-04 1207. 1.315E-03 1.270E-03 NE 1100. 1100. 1.279E-04 1.238E-04 1100. 4.558E-04 4.407E-04 1100. 1.440E-03 1.391E-03 ENE 1244. 1244. 1.040E-04 1.007E-04 1244. 2.898E-04 2.803E-04 1244. 7.532E-04 7.276E-04 E 1000. 1000. 1.502E-04 1.454E-04 1000. 5.929E-04 5.733E-04 1000. 1.654E-03 1.597E-03 ESE 988. 988. 1.380E-04 1.335E-04 988. 4.921E-04 4.758E-04 988. 1.571E-03 1 .517E-03 SE 1000. 1000. 1.329E-04 1.287E-04 1000. 4.493E-04 4.344E-04 1000. 1.617E-03 1.562E-03 SSE 792. 792. 1.475E-04 1.427E-04 792. 5.356E-04 5.179E-04 792. 2.030E-03 1.960E-03 S 841. 841. 1.235E-04 1.195E-04 841. 4.212E-04 4.073E-04 841. 1.649E-03 1.593E-03 SSW 853. 853. 1.157E-04 1.120E-04 853. 4.047E-04 3.914E-04 853. 1.524E-03 1.472E-03 SW 1024. 1024. 1.052E-04 1.018E-04 1024. 3.800E-04 3.675E-04 1024. 1.384E-03 1.337E-03 WSW 1170. 1170. 1.031E-04 9.974E-05 1170. 3.328E-04 3.218E-04 1170. 1.002E-03 9.680E-04 W 1756. 1756. 6.772E-05 6.553E-05 1756. 2.411E-04 2.332E-04 1756. 7.180E-04 6.938E-04 WNW 1219. 1219. 7.868E-05 7.615E-05 1219. 3.470E-04 3.355E-04 1219. 1.459E-03 1.409E-03 NW 756. 756. 1.379E-04 1.335E-04 756. 5.259E-04 5.086E-04 756. 1.834E-03 1.771E-03 NNW 671. 671. 1.754E-04 1.697E-04 671. 7.662E-04 7.408E-04 671. 2.627E-03 2.537E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on I cm Depth at the Unrestricted Area Boundary for Xe-1 37 Downwind Unrestricted ELevated(Stack) Release Mixed Mode(Vent) ReLease Ground Level ReLease Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mradlyr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 768. 768. 1.107E-04 1.071E-04 768. 3.275E-04 3.170E-04 768. 6.309E-04 6.104E-04 NNE 1207. 1207. 6.023E-05 5.830E-05 1207. 1.264E-04 1.223E-04 1207. 2.017E-04 1.952E-04 NE 1100. 1100. 5.847E-05 5.659E-05 1100. 1.267E-04 1.226E-04 1100. 2.117E-04 2.049E-04 ENE 1244. 1244. 4.063E-05 3.933E-05 1244. 7.244E-05 7.011E-05 1244. 1.013E-04 9.801E-05 E 1000. 1000. 7.256E-05 7.024E-05 1000. 1.894E-04 1.833E-04 1000. 3.270E-04 3.164E-04 ESE 988. 988. 6.769E-05 6.552E-05 988. 1.588E-04 1.537E-04 988. 2.954E-04 2.859E-04 SE 1000. 1000. 6.336E-05 6.133E-05 1000. 1.436E-04 1.389E-04 1000. 2.687E-04 2.600E-04 SSE 792. 792. 7.937E-05 7.683E-05 792. 1.916E-04 1.855E-04 792. 4.020E-04 3.890E-04 S 841. 841. 5.651E-05 5.470E-05 841. 1.378E-04 1.334E-04 841. 2.539E-04 2.457E-04 SSW 853. 853. 5.384E-05 5.212E-05 853. 1.293E-04 1.251E-04 853. 2.520E-04 2.438E-04 SW 1024. 1024. 4.546E-05 4.400E-05 1024. 1.042E-04 1.009E-04 1024. 1.939E-04 1.876E-04 WSW 1170. 1170. 3.874E-05 3.750E-05 1170. 7.913E-05 7.658E-05 1170. 1.209E-04 1.170E-04 W 1756. 1756. 1.752E-05 1.696E-05 1756. 3.873E-05 3.748E-05 1756. 5.480E-05 5.302E-05 WNW 1219. 1219. 2.999E-05 2.903E-05 1219. 8.360E-05 8.091E-05 1219. 1.722E-04 1.666E-04 NW 756. 756. 7.264E-05 7.031E-05 756. 1.876E-04 1.816E-04 756. 3.834E-04 3.710E-04 NNW 671. 671. 9.950E-05 9.632E-05 671. 3.095E-04 2.995E-04 671. 7.314E-04 7.077E-04 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-21

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Xe-138 Downwind Unrestricted Etevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radfius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (met ters) (mrad/yr)/(uCi/sec)

N 768. 768. 8.543E-04 8.302E-04 768. 2.494E-03 2.422E-03 F68. 5.853E-03 5.681E-03 NNE 1207. 1207. 5.254E-04 5.106E-04 1207. 1.219E-03 1.184E-03 12 207. 2.614E-03 2.537E-03 NE 1100. 1100. 5.164E-04 5.019E-04 1100. 1.212E-03 1.177E-03 11100. 2.684E-03 2.605E-03 ENE 1244. 1244. 3.998E-04 3.885E-04 1244. 7.482E-04 7.267E-04 12244. 1.362E-03 1.322E-03 E 1000. 1000. 6.190E-04 6.015E-04 1000. 1.640E-03 1.593E-03 1000.

3.507E-03 3.404E-03 ESE 988. 988. 5.683E-04 5.523E-04 988. 1.367E-03 1.327E-03 9

'88. 3.252E-03 3.156E-03 SE 1000. 1000. 5.447E-04 5.294E-04 1000. 1.273E-03 1.237E-03 10

00. 3.167E-03 3.074E-03 SSE 792. 792. 6.340E-04 6.161E-04 792. 1.569E-03 1.524E-03 7'92. 4.277E-03 4.151E-03 S 841. 841. 4.874E-04 4.737E-04 841. 1.203E-03 1.168E-03 8 41. 3.049E-03 2.959E-03 SSW 853. 853. 4.667E-04 4.535E-04 853. 1.149E-03 1.116E-03 8 53. 2.974E-03 2.886E-03 SW 1024. 1024. 4.199E-04 4.081E-04 1024. 1.014E-03 9.852E-04 1024. 2.506E-03 2.432E-03 WSW 1170. 1170. 3.977E-04 3.865E-04 1170. 8.710E-04 8.460E-04 1170. 1.758E-03 1.706E-03 W 1756. 1756. 2.229E-04 2.166E-04 1756. 5.469E-04 5.312E-04 17'56. 1.115E-03 1.082E-03 WNW 1219. 1219. 3.015E-04 2.930E-04 1219. 9.027E-04 8.767E-04 1219. 2.512E-03 2.438E-03 NW 756. 756. 6.013E-04 5.844E-04 756. 1.538E-03 1.494E-03 '56. 3.871E-03 3.757E-03 NNW 671. 671. 7.735E-04 7.517E-04 671. 2.320E-03 2.253E-03 76 71. 6.461E-03 6.271E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F "

DRESDEN Revision 1.1 July 1994 Table F-7 (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Unrestricted Area Boundary for Ar-41 Downwind Unrestricted Etevated(Stack) ReLease Mixed Mode(Vent) Retease Ground Lever Retease Radius V VBAR Radius G GBAR Direction Area Bound Radius S SBAR (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

(meters) (meters) (mrad/yr)/(uCi/sec) 768. 3.199E-03 3.097E-03 768. 8.844E-03 8.561E-03 N 768. 768. 1.028E-03 9.954E-04 1207. 4.481E-03 4.337E-03 1207. 1207. 6.592E-04 6.381E-04 1207. 1.739E-03 1.683E-03 NNE 1100. 4.797E-03 4.643E-03 1100. 1100. 6.501E-04 6.293E-04 1100. 1.740E-03 1.685E-03 NE 1.075E-03 1244. 2.509E-03 2.429E-03 1244. 1244. 5.257E-04 5.089E-04 1244. 1.111E-03 ENE 2.262E-03 2.189E-03 1000. 5.647E-03 5.466E-03 1000. 1000. 7.666E-04 7.421E-04 1000.

E 1.824E-03 988. 5.348E-03 5.177E-03 988. 7.013E-04 6.789E-04 988. 1.884E-03 ESE 988. 1.684E-03 1000. 5.454E-03 5.280E-03 1000. 6.767E-04 6.550E-04 1000. 1.740E-03 SE 1000. 2.025E-03 792. 6.943E-03 6.721E-03 792. 7.637E-04 7.393E-04 792. 2.092E-03 SSE 792. 1.652E-03 1.599E-03 841. 5.507E-03 5.331E-03 841. 841. 6.416E-04 6.210E-04 841.

S 1.529E-03 853. 5.130E-03 4.966E-03 853. 6.026E-04 5.833E-04 853. 1.580E-03 SSW 853. 1.475E-03 1.428E-03 1024. 4.583E-03 4.436E-03 1024. 1024. 5.432E-04 5.258E-04 1024.

SW 1.293E-03 1.252E-03 1170. 3.310E-03 3.204E-03 1170. 1170. 5.286E-04 5.116E-04 1170.

WSW 9.098E-04 8.806E-04 1756. 2.358E-03 2.283E-03 1756. 1756. 3.346E-04 3.239E-04 1756.

W 1.327E-03 1.285E-03 1219. 4.769E-03 4.616E-03 1219. 1219. 4.009E-04 3.880E-04 1219.

WNW 756. 2.057E-03 1.991E-03 756. 6.247E-03 6.047E-03 NW 756. 756. 7.304E-04 7.070E-04 671. 9.202E-03 8.907E-03 9.277E-04 8.980E-04 671. 2.986E-03 2.891E-03 NNW 671. 671.

DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-23

DRESDEN Revision 1.1 July 1994 Table F-7a Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Kr-83m Downwind Restricted Etevated(Stack) Retease Mixed Mode(Vent) Retease Direction Area Bound Radius Ground Level Release S SBAR Radius V VBAR Radius (meters) (meters) (mrad/yr)/(uCi/sec) G GBAR (meters) (mrad/yr)l(uCilsec) (meters) (mrad/yr)/(uCi/sec)

N 466. 466. 1.041E-06 7.848E-07 466. 1.183E-04 8.920E-05 NNE 698. 466. 7.750E-04 5.844E-04 698. 1.121E-06 8.449E-07 698. 6.129E-05 4.621E-05 698.

NE 646. 3.913E-04 2.950E-04 646. 1.066E-06 8.037E-07 646. 6.013E-05 4.534E-05 646. 4.320E-04 3.257E-04 ENE 646. 646. 9.380E-07 7.072E-07 646. 3.998E-05 3.015E-05 646. 2.581E-04 1.946E-04 E 689. 689. 1.297E-06 9.782E-07 689. 6.576E-05 4.958E-05 689.

ESE 3.779E-04 2.849E-04 661. 661. 1.460E-06 1.1O1E-06 661. 5.746E-05 4.333E-05 661.

SE 3.798E-04 2.864E-04 664. 664. 1.647E-06 1.242E-06 664. 5.018E-05 3.784E-05 664.

SSE 3.997E-04 3.014E-04 744. 744. 1.560E-06 1.176E-06 744. 3.785E-05 2.854E-05 744. 3.091E-04 2.330E-04 S 814. 814. 1.112E-06 8.384E-07 814. 2.441E-05 1.841E-05 814. 2.240E-04 1.689E-04 SSW 789. 789. 1.040E-06 7.839E-07 789. 2.593E-05 1.955E-05 789. 2.244E-04 1.692E-04 WSW 414. 414. 9.653E-07 7.278E-07 414. 6.443E-05 4.858E-05 414. 6.919E-04 5.217E-04 "W 360. 360. 6.899E-07 5.202E-07 360. 6.746E-05 5.087E-05 360. 7.401E-04 5.581E-04 454. 454. 7.213E-07 5.439E-07 454. 7.089E-05 5.345E-05 454. 6.422E-04 4.842E-04 WNW 469. 469. 6.491E-07 4.894E-07 469. 8.073E-05 6.087E-05 469. 8.066E-04 6.082E-04 NW 482. 482. 7.323E-07 5.522E-07 482. 5.751E-05 4.336E-05 482. 5.123E-04 3.863E-04 NNW 466. 466. 7.395E-07 5.576E-07 466. 8.846E-05 6.670E-05 466. 6.690E-04 5.044E-04 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 Note: Based on Reference 1 of Section F.2 and the formulas in Sections B.5 and B.6 of Appendix B.

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Kr-85m Downwind Restricted Etevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mradlyr)/(uCilsec) (meters) (mrad/yr)/(uCi/sec) (meters) (mradlyr)l(uCi/sec)

N 466. 466. 2.230E-04 2.158E-04 466. 1.067E-03 1.027E-03 466. 3.594E-03 3.437E-03 NNE 698. 698. 1.529E-04 1.479E-04 698. 6.163E-04 5.932E-04 698. 1.974E-03 1.889E-03 NE 646. 646. 1.478E-04 1.430E-04 646. 6.061E-04 5.834E-04 646. 2.111E-03 2.020E-03 ENE 646. 646. 1.333E-04 1.290E-04 646. 4.501E-04 4.335E-04 646. 1.321E-03 1.264E-03 E 689. 689. 1.498E-04 1.449E-04 689. 6.595E-04 6.348E-04 689. 1.981E-03 1.896E-03 ESE 661. 661. 1.424E-04 1.378E-04 661. 5.726E-04 5.511E-04 661. 1.959E-03 1.875E-03 SE 664. 664. 1.391E-04 1.346E-04 664. 5.279E-04 5.083E-04 664. 2.037E-03 1.950E-03 SSE 744. 744. 1 .11OE-04 1.074E-04 744. 4.191E-04 4.036E-04 744. 1.626E-03 1.556E-03 S 814. 814. 8.973E-05 8.679E-05 814. 3.161E-04 3.046E-04 814. 1.260E-03 1.207E-03 SSW 789. 789. 8.795E-05 8.508E-05 789. 3.199E-04 3.082E-04 789. 1.239E-03 1.187E-03 SW 414. 414. 1.735E-04 1.679E-04 414. 7.369E-04 7.098E-04 414. 3.258E-03 3.115E-03 WSW 360. 360. 2.168E-04 2.098E-04 360. 8.360E-04 8.055E-04 360. 3.347E-03 3.199E-03 W 454. 454. 1.616E-04 1.564E-04 454. 7.474E-04 7.196E-04 454. 3.018E-03 2.886E-03 WNW 469. 469. 1.329E-04 1.286E-04 469. 7.339E-04 7.061E-04 469. 3.639E-03 3.477E-03 NU 482. 482. 1.485E-04 1.437E-04 482. 6.336E-04 6.101E-04 482. 2.416E-03 2.311E-03 NNW 466. 466. 1.744E-04 1.688E-04 466. 8.433E-04 8.115E-04 466. 3.104E-03 2.968E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-25

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Kr-85 Downwind Restricted Etevated(Stack) Release Mixed Mode(Vent) Release Direction Area Bound Radius Ground Level Release S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mradlyr)/(uCi/sec)

N 466. 466. 3.143E-06 3.040E-06 466. 1.231E-05 1.190E-05 466. 3.902E-05 NNE 3.77ME-05 698. 698. 2.122E-06 2.052E-06 698. 7.164E-06 6.928E-06 698. 2.157E-05 2.086E-05 NE 646. 646. 2.066E-06 1.998E-06 646. 7.095E-06 6.861E-06 646. 2.323E-05 ENE 2.247E-05 646. 646. 1.876E-06 1.814E-06 646. 5.302E-06 5.127E-06 646. 1.455E-05 1.407E-05 E 689. 689. 2.087E-06 2.018E-06 689. 7.673E-06 7.420E-06 689. 2.175E-05 2.103E-05 ESE 661. 661. 1.977E-06 1.912E-06 661. 6.666E-06 6.446E-06 661. 2.151E-05 SE 2.080E-05 664. 664. 1.932E-06 1.868E-06 664. 6.158E-06 5.955E-06 664. 2.246E-05 2.172E-05 SSE 744. 744. 1.539E-06 1.488E-06 744. 4.926E-06 4.763E-06 744. 1.802E-05 1.742E-05 S 814. 814. 1.279E-06 1.237E-06 814. 3.759E-06 3.635E-06 814. 1.416E-05 1.369E-05 SSW 789. 789. 1.247E-06 1.206E-06 789. 3.782E-06 3.657E-06 789. 1.382E-05 1.336E-05 Sw 414. 414. 2.479E-06 2.397E-06 414. 8.698E-06 8.411E-06 414. 3.548E-05 3.430E-05 WSW 360. 360. 3.110E-06 3.008E-06 360. 9.874E-06 9.548E-06 360. 3.626E-05 3.506E-05 w 454. 454. 2.321E-06 2.244E-06 454. 8.737E-06 8.449E-06 454. 3.270E-05 3.163E-05 WNW 469. 469. 1.894E-06 1.832E-06 469. 8.519E-06 8.238E-06 469. 3.970E-05 3.839E-05 NW 482. 482. 2.11OE-06 2.041E-06 482. 7.448E-06 7.202E-06 482. 2.638E-05 2.551E-05 NNW 466. 466. 2.476E-06 2.394E-06 466. 9.798E-06 9.474E-06 466. 3.357E-05 3.246E-05 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Kr-87 Downwind Restricted Elevated(Stack) Retease Mixed Mode(Vent) Retease Ground Level Retease Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mradlyr)l(uCilsec) (meters) (mrad/yr)lCuCilsec) (meters) (mrad/yr)/(uCi/sec)

N 466. 466. 1.137E-03 1.105E-03 466. 3.687E-03 3.580E-03 466. 1.071E-02 1.040E-02 NNE 698. 698. 7.555E-04 7.340E-04 698. 2.123E-03 2.062E-03 698. 5.856E-03 5.686E-03 NE 646. 646. 7.405E-04 7.194E-04 646. 2.093E-03 2.033E-03 646. 6.143E-03 5.965E-03 ENE 646. 646. 6.748E-04 6.556E-04 646. 1.576E-03 1.530E-03 646. 3.888E-03 3.775E-03 E 689. 689. 7.454E-04 7.242E-04 689. 2.252E-03 2.187E-03 689. 5.844E-03 5.674E-03 ESE 661. 661. 7.052E-04 6.852E-04 661. 1.965E-03 1.908E-03 661. 5.772E-03 5.604E-03 SE 664. 664. 6.896E-04 6.700E-04 664. 1.837E-03 1.784E-03 664. 5.961E-03 5.788E-03 SSE 744. 744. 5.478E-04 5.322E-04 744. 1.458E-03 1.416E-03 744. 4.719E-03 4.582E-03 S 814. 814. 4.428E-04 4.302E-04 814. 1.107E-03 1.075E-03 814. 3.558E-03 3.454E-03 SSW 789. 789. 4.371E-04 4.247E-04 789. 1.115E-03 1.082E-03 789. 3.542E-03 3.439E-03 SW 414. 414. 9.088E-04 8.830E-04 414. 2.627E-03 2.551E-03 414. 9.591E-03 9.312E-03 WSW 360. 360. 1.151E-03 1.119E-03 360. 3.009E-03 2.922E-03 360. 9.936E-03 9.647E-03 W 454. 454. 8.516E-04 8.275E-04 454. 2.633E-03 2.557E-03 454. 8.998E-03 8.737E-03 WNW 469. 469. 6.945E-04 6.748E-04 469. 2.555E-03 2.481E-03 469. 1.066E-02 1.035E-02 NW 482. 482. 7.712E-04 7.493E-04 482. 2.229E-03 2.164E-03 482. 7.109E-03 6.902E-03 NNW 466. 466. 8.990E-04 8.735E-04 466. 2.932E-03 2.847E-03 466. 9.310E-03 9.039E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-27

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Kr-88 Downwind Restricted ELevated(Stack) Release Mixed Mode(Vent) Release Direction Area Bound Radius Ground Level Release S SBAR Radius V VBAR Radius G (meters) (meters) (mrad/yr)/(uCi/sec) GBAR (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 466. 466. 2.943E-03 2.865E-03 466. 8.929E-03 8.681E-03 466. 2.587E-02 2.511E-02 NNE 698. 698. 1.947E-03 1.896E-03 698. 5.194E-03 5.050E-03 698. 1.425E-02 1.384E-02 NE 646. 646. 1.914E-03 1.864E-03 646. 5.149E-03 5.007E-03 ENE 646. 1.515E-02 1.471E-02 646. 646. 1.751E-03 1.705E-03 646. 3.883E-03 3.776E-03 646. 9.563E-03 9.287E-03 E 689. 689. 1.928E-03 1.877E-03 689. 5.527E-03 5.374E-03 689. 1.430E-02 1.389E-02 ESE 661. 661. 1.821E-03 1.772E-03 661. 4.821E-03 4.688E-03 661. 1.414E-02 1.373E-02 SE 664. 664. 1.783E-03 1.735E-03 664. 4.497E-03 4.373E-03 664. 1.470E-02 1.427E-02 SSE 744. 744. 1.419E-03 1.382E-03 744. 3.601E-03 3.502E-03 744. 1.172E-02 1.138E-02 S 814. 814. 1.180E-03 1.148E-03 814. 2.755E-03 2.679E-03 814. 9.025E-03 SSW 8.765E-03 789. 789. 1.155E-03 1.124E-03 789. 2.761E-03 2.685E-03 789. 8.882E-03 8.627E-03 SW 414. 414. 2.367E-03 2.304E-03 414. 6.449E-03 6.272E-03 414. 2.333E-02 2.265E-02 WSW 360. 360. 2.990E-03 2.911E-03 360. 7.340E-03 7.139E-03 360. 2.399E-02 2.329E-02 W 454. 454. 2.223E-03 2.164E-03 454. 6.415E-03 6.238E-03 454. 2.169E-02 WNW 2.106E-02 469. 469. 1.805E-03 1.757E-03 469. 6.215E-03 6.043E-03 469. 2.604E-02 2.528E-02 NW 482. 482. 2.001E-03 1.948E-03 482. 5.457E-03 5.307E-03 482. 1.734E-02 1.684E-02 NNW 466. 466. 2.333E-03 2.271E-03 466. 7.138E-03 6.941E-03 466. 2.236E-02 2.171E-02 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F`

DRESDEN Revision 1. 1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Kr-89 Downwind Restricted Elevated(Stack) Release Mixed Mode(Vent) Retease Ground LeveL Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mradlyr)l(uCilsec) (meters) (mrad/yr)/(uCi/sec)

N 466. 466. 1.732E-03 1.683E-03 466. 5.035E-03 4.891E-03 466. 1.065E-02 1.034E-02 NNE 698. 698. 1.031E-03 1.002E-03 698. 2.286E-03 2.221E-03 698. 4.275E-03 4.153E-03 NE 646. 646. 9.950E-04 9.670E-04 646. 2.234E-03 2.170E-03 646. 4.298E-03 4.175E-03 ENE 646. 646. 8.600E-04 8.358E-04 646. 1.676E-03 1.628E-03 646. 2.825E-03 2.744E-03 E 689. 689. 9.705E-04 9.431E-04 689. 2.440E-03 2.370E-03 689. 4.482E-03 4.354E-03 ESE 661. 661. 9.455E-04 9.188E-04 661. 2.181E-03 2.119E-03 661. 4.358E-03 4.232E-03 SE 664. 664. 9.066E-04 8.810E-04 664. 2.023E-03 1.966E-03 664. 4.112E-03 3.994E-03 SSE 744. 744. 6.762E-04 6.571E-04 744. 1.429E-03 1.388E-03 744. 2.760E-03 2.680E-03 S 814. 814. 4.553E-04 4.425E-04 814. 9.592E-04 9.318E-04 814. 1.596E-03 1.550E-03 SSW 789. 789. 4.664E-04 4.533E-04 789. 9.763E-04 9.484E-04 789. 1.761E-03 1.710E-03 SW 414. 414. 1.343E-03 1.305E-03 414. 3.343E-03 3.248E-03 414. 8.556E-03 8.310E-03 WSU 360. 360. 1.768E-03 1.718E-03 360. 4.104E-03 3.987E-03 360. 9.909E-03 9.624E-03 W 454. 454. 1.187E-03 1.153E-03 454. 3.343E-03 3.247E-03 454. 8.490E-03 8.246E-03 WNW 469. 469. 9.873E-04 9.595E-04 469. 3.183E-03 3.092E-03 469. 9.119E-03 8.857E-03 NW 482. 482. 1.096E-03 1.065E-03 482. 2.722E-03 2.644E-03 482. 6.040E-03 5.867E-03 NNW 466. 466. 1.313E-03 1.276E-03 466. 3.815E-03 3.706E-03 466. 9.388E-03 9.118E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-29

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Kr-90 Downwind Restricted ELevated(Stack) Retease Mixed Mode(Vent) Retease Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mradlyr)l(uCilsec) (meters) (mrad/yr)/(uCi/sec)

N 466. 466. 5.929E-04 5.755E-04 466. 1.271E-03 1.233E-03 466. 1.613E-03 1.564E-03 NNE 698. 698. 2.234E-04 2.169E-04 698. 2.964E-04 2.875E-04 698. 3.053E-04 2.960E-04 NE 646. 646. 2.150E-04 2.087E-04 646. 2.886E-04 2.799E-04 646. 2.853E-04 2.766E-04 ENE 646. 646. 1.600E-04 1.553E-04 646. 2.232E-04 2.165E-04 646. 2.234E-04 2.166E-04 E 689. 689. 1.909E-04 1.853E-04 689. 3.262E-04 3.164E-04 689. 3.357E-04 3.255E-04 ESE 661. 661. 2.049E-04 1.989E-04 661. 3.190E-04 3.094E-04 661. 3.449E-04 3.344E-04 SE 664. 664. 1.732E-04 1.681E-04 664. 2.602E-04 2.524E-04 664. 2.762E-04 2.678E-04 SSE 744. 744. 1.077E-04 1.046E-04 744. 1.358E-04 1.317E-04 744. 1.195E-04 1.159E-04 S 814. 814. 5.360E-05 5.202E-05 814. 6.541E-05 6.345E-05 814. 4.998E-05 4.846E-05 SSW 789. 789. 5.864E-05 5.692E-05 789. 7.078E-05 6.866E-05 789. 5.185E-05 5.027E-05 SW 414. 414. 4.047E-04 3.929E-04 414. 7.044E-04 6.833E-04 414. 9.383E-04 9.096E-04 WSW 360. 360. 5.613E-04 5.449E-04 360. 9.253E-04 8.977E-04 360. 1.276E-03 1.237E-03 W 454. 454. 3.031E-04 2.943E-04 454. 6.126E-04 5.942E-04 454. 8.379E-04 8.123E-04 WNW 469. 469. 2.652E-04 2.574E-04 469. 5.427E-04 5.264E-04 469. 7.684E-04 7.449E-04 NW 482. 482. 2.739E-04 2.659E-04 482. 4.758E-04 4.616E-04 482. 6.150E-04 5.962E,04 NNW 466. 466. 3.808E-04 3.696E-04 466. 8.240E-04 7.992E-04 466. 1.215E-03 1.178E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Xe-I31m Downwind Restricted Etevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Radius V VBAR Radius G GBAR Direction Area Bound Radius S SBAR (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

(meters) (meters) (mrad/yr)/(uCi/sec)

N 466. 466. 5.556E-06 5.204E-06 466. 1.153E-04 9.164E-05 466. 6.984E-04 5.422E-04 3.812E-06 698. 6.169E-05 4.926E-05 698. 3.589E-04 2.792E-04 NNE 698. 698. 4.133E-06 3.982E-06 3.675E-06 646. 6.105E-05 4.875E-05 646. 4.019E-04 3.123E-04 NE 646. 646. 1.874E-04 3.576E-06 3.303E-06 646. 4.173E-05 3.348E-05 646. 2.409E-04 ENE 646. 646. 3.507E-04 2.731E-04 689. 4.208E-06 3.855E-06 689. 6.680E-05 5.332E-05 689.

E 689. 661. 3.524E-04 2.743E-04 661. 661. 4.174E-06 3.795E-06 661. 5.779E-05 4.614E-05 ESE 4.070E-05 664. 3.743E-04 2.912E-04 SE 664. 664. 4.252E-06 3.839E-06 664. 5.086E-05 3.212E-06 744. 3.899E-05 3.128E-05 744. 2.939E-04 2.288E-04 SSE 744. 744. 3.590E-06 1.717E-04 2.534E-06 814. 2.622E-05 2.120E-05 814. 2.202E-04 S 814. 814. 2.813E-06 1.698E-04 2.445E-06 789. 2.755E-05 2.221E-05 789. 2.178E-04 SSW 789. 789. 2.708E-06 6.302E-04 4.894E-04 4.445E-06 4.141E-06 414. 6.611E-05 5.314E-05 414.

SW 414. 414. 6.654E-04 5.162E-04 4.865E-06 360. 7.064E-05 5.700E-05 360.

WSW 360. 360. 5.145E-06 454. 5.783E-04 4.492E-04 454. 454. 4.007E-06 3.758E-06 454. 7.148E-05 5.722E-05 W 7.894E-05 6.278E-05 469. 7.362E-04 5.710E-04 469. 469. 3.335E-06 3.119E-06 469.

WNW 482. 5.931E-05 4.756E-05 482. 4.685E-04 3.638E-04 NW 482. 482. 3.732E-06 3.489E-06 466. 8.721E-05 6.951E-05 466. 5.987E-04 4.649E-04 NNW 466. 466. 4.291E-06 4.030E-06 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-31

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Xe-1 33m Downwind Restricted Elevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SEAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mradlyr)l(uCi/sec)

N 466. 466. 3.241E-05 3.119E-05 466. 2.440E-04 2.155E-04 466. 1.136E-03 9.602E-04 NNE 698. 698. 2.256E-05 2.164E-05 698. 1.363E-04 1.211E-04 698. 5.998E-04 5.098E-04 NE 646. 646. 2.179E-05 2.091E-05 646. 1.346E-04 1.195E-04 646. 6.612E-04 5.604E-04 ENE 646. 646. 1.965E-05 1.886E-05 646. 9.633E-05 8.606E-05 646. 4.028E-04 3.424E-04 E 689. 689. 2.227E-05 2.133E-05 689. 1.468E-04 1.304E-04 689. 5.931E-04 5.052E-04 ESE 661. 661. 2.134E-05 2.040E-05 661. 1.272E-04 1.130E-04 661. 5.922E-04 5.039E-04 SE 664. 664. 2.103E-05 2.006E-05 664. 1.147E-04 1.022E-04 664. 6.244E-04 5.306E-04 SSE 744. 744. 1.699E-05 1.617E-05 744. 8.986E-05 8.027E-05 744. 4.942E-04 4.206E-04 S 814. 814. 1.376E-05 1.312E-05 814. 6.470E-05 5.828E-05 814. 3.771E-04 3.221E-04 SSW 789. 789. 1.340E-05 1.278E-05 789. 6.644E-05 5.969E-05 789. 3.712E-04 3.167E-04 SW 414. 414. 2.535E-05 2.437E-05 414. 1.552E-04 1.389E-04 414. 1.028E-03 8.695E-04 WSW 360. 360. 3.122E-05 3.010E-05 360. 1.715E-04 1.542E-04 360. 1.072E-03 9.053E-04 U 454. 454. 2.349E-05 2.262E-05 454. 1.617E-04 1.441E-04 454. 9.451E-04 7.998E-04 WNW 469. 469. 1.934E-05 1.860E-05 469. 1.676E-04 1.480E-04 469. 1.181E-03 9.961E-04 NW 482. 482. 2.161E-05 2.079E-05 482. 1.360E-04 1.214E-04 482. 7.638E-04 6.462E-04 NNW 466. 466. 2.531E-05 2.437E-05 466. 1.891E-04 1.675E-04 466. 9.753E-04 8.249E-04 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Xe-I33 Downwind Restricted ELevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mradlyr)l(uCi/sec)

N 466. 466. 2.838E-05 2.749E-05 466. 2.710E-04 2.466E-04 466. 1.235E-03 1.086E-03 NNE 698. 698. 2.043E-05 1.974E-05 698. 1.526E-04 1.395E-04 698. 6.600E-04 5.834E-04 NE 646. 646. 1.949E-05 1.883E-05 646. 1.497E-04 1.367E-04 646. 7.232E-04 6.376E-04 ENE 646. 646. 1.742E-05 1.683E-05 646. 1.075E-04 9.865E-05 646. 4.427E-04 3.913E-04 E 689. 689. 2.012E-05 1.941E-05 689. 1.647E-04 1.505E-04 689. 6.559E-04 5.810E-04 ESE 661. 661. 1.945E-05 1.873E-05 661. 1.424E-04 1.302E-04 661. 6.530E-04 5.77SE-04 SE 664. 664. 1.923E-05 1.848E-05 664. 1.285E-04 1.178E-04 664. 6.863E-04 6.064E-04 744. 744. 1.569E-05 1.505E-05 744. 1.006E-04 9.237E-05 744. 5.450E-04 4.823E-04 SSE S 814. 814. 1.234E-05 1.186E-05 814. 7.264E-05 6.710E-05 814. 4.196E-04 3.726E-04 789. 789. 1.201E-05 1.154E-05 789. 7.469E-05 6.887E-05 789. 4.123E-04 3.658E-04 SSW 414. 414. 2.175E-05 2.105E-05 414. 1.717E-04 1.578E-04 414. 1.121E-03 9.870E-04 SW 360. 360. 2.634E-05 2.555E-05 360. 1.899E-04 1.750E-04 360. 1.163E-03 1.021E-03 WSW 454. 454. 1.994E-05 1.931E-05 454. 1.796E-04 1.645E-04 454. 1.031E-03 9.079E-04 W

469. 469. 1.660E-05 1.607E-05 469. 1.849E-04 1.682E-04 469. 1.278E-03 1.121E-03 WNW 7.323E-04 NW 482. 482. 1.863E-05 1.804E-05 482. 1.512E-04 1.386E-04 482. 8.321E-04 466. 2.185E-05 2.118E-05 466. 2.096E-04 1.912E-04 466. 1.062E-03 9.343E-04 NNW 466.

DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-33

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maxmnum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Xe-135m Downwind Restricted Etevated(Stack) Release Mixed Node(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 466. 466. 5.476E-04 5.295E-04 466. 2.124E-03 2.049E-03 466. 5.997E-03 5.773E-03 NNE 698. 698. 3.634E-04 3.514E-04 698. 1.154E-03 1.114E-03 698. 3.094E-03 2.980E-03 NE 646. 646. 3.525E-04 3.408E-04 646. 1.121E-03 1.082E-03 646. 3.110E-03 2.995E-03 ENE 646. 646. 3.159E-04 3.054E-04 646. 8.372E-04 8.082E-04 646. 1.987E-03 1.914E-03 E 689. 689. 3.536E-04 3.419E-04 689. 1.215E-03 1.173E-03 689. 3.060E-03 2.947E-03 ESE 661. 661. 3.372E-04 3.260E-04 661. 1.065E-03 1.028E-03 661. 2.999E-03 2.888E-03 SE 664. 664. 3.282E-04 3.173E-04 664. 1.001E-03 9.660E-04 664. 3.007E-03 2.896E-03 SSE 744. 744. 2.572E-04 2.486E-04 744. 7.657E-04 7.391E-04 744. 2.290E-03 2.206E-03 S 814. 814. 1.908E-04 1.844E-04 814. 5.608E-04 5.414E-04 814. 1.566E-03 1.509E-03 SSW 789. 789. 1.925E-04 1.861E-04 789. 5.709E-04 5.512E-04 789. 1.643E-03 1.583E-03 SW 414. 414. 4.279E-04 4.137E-04 414. 1.445E-03 1.395E-03 414. 5.165E-03 4.973E-03 WSW 360. 360. 5.484E-04 5.302E-04 360. 1.692E-03 1.634E-03 360. 5.561E-03 5.353E-03 W 454. 454. 3.953E-04 3.822E-04 454. 1.478E-03 1.426E-03 454. 5.053E-03 4.865E-03 WNW 469. 469. 3.274E-04 3.166E-04 469. 1.441E-03 1.390E-03 469. 5.671E-03 5.459E-03 NW 482. 482. 3.651E-04 3.530E-04 482. 1.223E-03 1.180E-03 482. 3.781E-03 3.640E-03 NNW 466. 466. 4.270E-04 4.129E-04 466. 1.655E-03 1.597E-03 466. 5.333E-03 5.134E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Xe- 35 Downwind Restricted Elevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 466. 466. 3.150E-04 3.049E-04 466. 1.457E-03 1.408E-03 466. 4.806E-03 4.640E-03 NNE 698. 698. 2.157E-04 2.087E-04 698. 8.450E-04 8.169E-04 698. 2.654E-03 2.563E-03 NE 646. 646. 2.086E-04 2.019E-04 646. 8.323E-04 8.046E-04 646. 2.845E-03 2.747E-03 ENE 646. 646. 1.883E-04 1.822E-04 646. 6.195E-04 5.990E-04 646. 1.781E-03 1.720E-03 E 689. 689. 2.114E-04 2.046E-04 689. 9.053E-04 8.752E-04 689. 2.671E-03 2.580E-03 ESE 661. 661. 2.008E-04 1.943E-04 661. 7.856E-04 7.595E-04 661. 2.641E-03 2.550E-03 SE 664. 664. 1.961E-04 1.898E-04 664. 7.244E-04 7.004E-04 664. 2.749E-03 2.655E-03 SSE 744. 744. 1.565E-04 1.515E-04 744. 5.768E-04 5.577E-04 744. 2.201E-03 2.126E-03 S 814. 814. 1.274E-04 1.233E-04 814. 4.371E-04 4.227E-04 814. 1.721E-03 1.662E-03 SSW 789. 789. 1.246E-04 1.206E-04 789. 4.416E-04 4.270E-04 789. 1.685E-03 1.628E-03 SW 414. 414. 2.453E-04 2.375E-04 414. 1.013E-03 9.796E-04 414. 4.367E-03 4.216E-03 WSW 360. 360. 3.066E-04 2.967E-04 360. 1.150E-03 1.112E-03 360. 4.470E-03 4.315E-03 W 454. 454. 2.28BE-04 2.214E-04 454. 1.025E-03 9.907E-04 454. 4.035E-03 3.896E-03 WNW 469. 469. 1.879E-04 1.818E-04 469. 1.003E-03 9.694E-04 469. 4.873E-03 4.704E-03 NW 482. 482. 2.099E-04 2.031E-04 482. 8.706E-04 8.418E-04 482. 3.242E-03 3.130E-03 NNW 466. 466. 2.466E-04 2.387E-04 466. 1.154E-03 1.115E-03 466. 4.144E-03 4.001E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-35

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Xe-1 37 Downwind Restricted Elevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec)

N 466. 466. 2.127E-04 2.059E-04 466. 7.271E-04 7.036E-04 466. 1.667E-03 1.613E-03 NNE 698. 698. 1.306E-04 1.264E-04 698. 3.407E-04 3.298E-04 698. 7.018E-04 6.790E-04 NE 646. 646. 1.257E-04 1.217E-04 646. 3.320E-04 3.212E-04 646. 7.049E-04 6.821E-04 ENE 646. 646. 1.091E-04 1.056E-04 646. 2.481E-04 2.401E-04 646. 4.587E-04 4.439E-04 E 689. 689. 1.235E-04 1.196E-04 689. 3.634E-04 3.517E-04 689. 7.2735-04 7.037E-04 ESE 661. 661. 1.1995-04 1.161E-04 661. 3.234E-04 3.130E-04 661. 7.0655-04 6.836E-04 SE 664. 664. 1.152E-04 1.116E-04 664. 3.001E-04 2.904E-04 664. 6.732E-04 6.514E-04 SSE 744. 744. 8.688E-05 8.410E-05 744. 2.147E-04 2.078E-04 744. 4.630E-04 4.480E-04 S 814. 814. 5.9375-05 5.747E-05 814. 1.464E-04 1.416E-04 814. 2.744E-04 2.655E-04 SSW 789. 789. 6.060E-05 5.866E-05 789. 1.492E-04 1.4445-04 789. 3.031E-04 2.933E-04 SW 414. 414. 1.639E-04 1.586E-04 414. 4.811E-04 4.656E-04 414. 1.355E-03 1.311E-03 WSW 360. 360. 2.140E-04 2.072E-04 360. 5.836E-04 5.648E-04 360. 1.551E-03 1.500E-03

/ 454. 454. 1.459E-04 1.412E-04 454. 4.851E-04 4.694E-04 454. 1.350E-03 1.306E-03 WNW 469. 469. 1.216E-04 1.177E-04 469. 4.653E-04 4.503E-04 469. 1.456E-03 1.409E-03 NW 482. 482. 1.353E-04 1.310E-04 482. 3.948E-04 3.821E-04 482. 9.630E-04 9.318E-04 NNW 466. 466. 1.616E-04 1.564E-04 466. 5.529E-04 5.350E-04 466. 1.478E-03 1.430E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maxinum Ofisite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Xe- 38 Downwind Restricted ELevated(Stack) Release Mixed Mode(Vent) Release Ground Level Release Direction Area Bound Radius S SBAR Radius V VBAR Radius G GBAR (meters) (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)/(uCi/sec) (meters) (mradlyr)l(uCi/sec)

N 466. 466. 1.468E-03 1.426E-03 466. 4.715E-03 4.578E-03 466. 1.246E-02 1.209E-02 NNE 698. 698. 9.601E-04 9.331E-04 698. 2.564E-03 2.490E-03 698. 6.418E-03 6.229E-03 NE 646. 646. 9.374E-04 9.110E-04 646. 2.497E-03 2.425E-03 646. 6.435E-03 6.245E-03 ENE 646. 8.443E-04 8.205E-04 646. 1.879E-03 1.825E-03 646. 4.133E-03 S646.

4.011E-03 E 689. 689. 9.378E-04 9.114E-04 689. 2.697E-03 2.619E-03 689. 6.357E-03 6.169E-03 ESE 661. 661. 8.926E-04 8.675E-04 661. 2.364E-03 2.296E-03 661. 6.229E-03 6.045E-03 664. 8.697E-04 8.452E-04 664. 2.234E-03 2.169E-03 664. 6.239E-03 6.055E-03 SE 664.

744. 744. 6.807E-04 6.615E-04 744. 1.712E-03 1.663E-03 744. 4.744E-03 4.604E-03 SSE 3.226E-03 3.132E-03 S 814. 814. 5.066E-04 4.923E-04 814. 1.258E-03 1.222E-03 814.

789. 789. 5.116E-04 4.972E-04 789. 1.277E-03 1.240E-03 789. 3.392E-03 3.292E-03 SSW 414. 1.069E-02 1.037E-02 SW 414. 414. 1.162E-03 1.130E-03 414. 3.252E-03 3.158E-03 360. 1.153E-02 1.118E-02 WSW 360. 360. 1.499E-03 1.456E-03 360. 3.830E-03 3.720E-03 454. 1.077E-03 1.047E-03 454. 3.311E-03 3.215E-03 454. 1.049E-02 1.018E-02 W 454.

469. 8.887E-04 8.637E-04 469. 3.209E-03 3.117E-03 469. 1.173E-02 1. 138E-02 WNW 469. 482. 7.834E-03 7.602E-03 NW 482. 482. 9.879E-04 9.601E-04 482. 2.746E-03 2.666E-03 466. 1.151E-03 1.118E-03 466. 3.684E-03 3.578E-03 466. 1.109E-02 1.076E-02 NNW 466.

DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F-37

DRESDEN Revision 1.1 July 1994 Table F-7a (Continued)

Maximum Offsite Finite Plume Gamma Dose Factors Based on 1 cm Depth at the Restricted Area Boundary for Ar-41 Downwind Restricted ELevated(Stack) ReLease Mixed Mode(Vent) Release Ground Level Release Radius V VBAR Radius G GBAR Direction Area Bound Radius S SBAR (meters) (mrad/yr)/(uCi/sec) (meters) (mrad/yr)I(uCilsec)

(meters) (meters) (mrad/yr)/(uCi/sec) 466. 466. 1.683E-03 1.629E-03 466. 5.680E-03 5.499E-03 466. 1.694E-02 1.640E-02 8.992E-03 N 698. 3.281E-03 3.176E-03 698. 9.289E-03 NNE 698. 698. 1.121E-03 1.085E-03 646. 3.240E-03 3.136E-03 646. 9.820E-03 9.505E-03 NE 646. 646. 1.097E-03 1.062E-03 646. 6.194E-03 5.996E-03 646. 9.994E-04 9.674E-04 646. 2.434E-03 2.356E-03 ENE 646. 689. 9.290E-03 8.992E-03 689. 1.105E-03 1.070E-03 689. 3.488E-03 3.377E-03 E 689. 2.944E-03 661. 9.182E-03 8.888E-03 661. 661. 1.046E-03 1.012E-03 661. 3.041E-03 ESE 664. 2.834E-03 2.744E-03 664. 9.514E-03 9.210E-03 SE 664. 664. 1.022E-03 9.898E-04 2.184E-03 744. 7.558E-03 7.316E-03 744. 744. 8.133E-04 7.873E-04 744. 2.256E-03 SSE 1.716E-03 1.661E-03 814. 5.761E-03 5.577E-03 814. 814. 6.637E-04 6.424E-04 814.

S 789. 1.728E-03 1.673E-03 789. 5.704E-03 5.521E-03 789. 789. 6.528E-04 6.319E-04 1.475E-02 SSW 414. 4.046E-03 3.917E-03 414. 1.524E-02 SW 414. 414. 1.342E-03 1.299E-03 360. 1.573E-02 1.523E-02 1.640E-03 360. 4.622E-03 4.474E-03 WSW 360. 360. 1.694E-03 454. 1.422E-02 1.377E-02 1.217E-03 454. 4.055E-03 3.926E-03 W 454. 454. 1.257E-03 469. 1.699E-02 1.644E-02 9.921E-04 469. 3.940E-03 3.814E-03 WNW 469. 469. 1.025E-03 482. 1.131E-02 1.095E-02 482. 482. 1.138E-03 1.102E-03 482. 3.437E-03 3.327E-03 NW 466. 4.522E-03 4.377E-03 466. 1.469E-02 1.422E-02 NNW 466. 466. 1.329E-03 1.287E-03 DRESDEN SITE METEOROLOGICAL DATA 1/78 - 12/87 F_%q

DRESDEN Revision 1.1 July 1994 Table F-8 Parameters for Calculations of N-16 Skyshine Radiation From Dresden 213 Activity Occupancy Occupancy Shielding Distance Location Number Hours Factor Factor Rk k OHk" OF, SF, (M) 0.7 b 8344 0.95 80 0 Living at home (nearest resident)

Fishing 416 0.05 1.0 610' 2

Mh = 5 K = 3.60E-05 mrem/(MWe-hr) to the maximally exposed member of These parameters-are used to obtain an initial estimate of skyshine dose A. If desired, more realistic parameters could be used in place of the public using Equation A-34 in Appendix nearest resident really fishes the these to refine the estimate. For example, one could determine whether the specified number of hours at the specified location.

a The amount of time in a year that a maximally exposed fisherman would spend fishing near the site is of:

estimated as 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months per week for 8 months per year. This yields an estimate

[12 hours/week] [(8 months/yr)/(12 months/yr)] x [52 weeks/yr] = 416 hour0.00481 days 0.116 hours 6.878307e-4 weeks 1.58288e-4 months s/yr The remaining time is assumed to be spent at the nearest residence.

b Distance to nearest residence (See Table F-3).

C Estimated from a drawing of the site.

d The OFOis the quotient of the number of hours a location is occupied and the number of hours in a year.

Thus OH,/8760 hours = OFk rounded to the 0.01 digit.

F-39

- DRESDEN Jul 1994 Supplemental Table A Elevated Level Joint Frequency Distributon Table Summary 300 Foot Elevation Data Summary Table of Percent by Direction and Class S SSW SW : WSW W WNW NW NNW Total N NNE NE ENE E ESE SE SSE Class

.146 .167 .131 .207 .314 .367 .344 3.057

.222 .188 .164 .115 .096 .105 .102 .152 A .237 .241 .209 .256 .285 .287 .311 3.422

.176 .155 .123 .146 .151 .162 .252 .263 B .206 .200 .362 .515 .475 .469 .462 5.368

.236 .225 .194 .240 .268 .338 .441 .350 C .289 .246 .260 3.602 3.350 2.953 2.887 40.876 2.343 1.689 1.747 2.186 3.098 3.087 2.485 2.307 D 2.028 1.971 2.457 2.687 2.231 2.033 1.550 34.782 1.906 1.965 2.433 3.771 3.815 2.856 1.904 2.374 E 1.342 1.352 1.520 1.778 1.954 .644 .450 10.246

.777 .745 .816 .938 1.089 1.076 .793 .587 F .494 .476 .397 .244 .257 .463 .117 2.250

.156 .128 .189 .288 .275 .256 .135 .125 G .146 .141 .083 .039 .034 .026 .112 8.879 7.475 6.263 8.002 7.376 6.878 6.119 100.000 4.607 5.080 5.304 5.050 4.520 5.098 6.052 8.554 Total 4.742 Summary Table of Percent by Direction and Speed SW WSW W WNW NW NNW Total ENE E ESE SE SSE S SSW Speed N NNE NE

.000 .006 .000 .000 .000 .109

.007 .000 .000 .007 .010 .000 .000

.45 .033 .021 .017 .006 .027 .026 .033 .034 .565

.037 .035 .026 .043 .033 .031 .035 1.05 .035 .035 .031 .051 .052 .240 .229 .210 3.608

.216 .220 .221 .171 .235 .249 .223 2.05 .240 .209 .213 .244 .265 .223 .416 .416 7.710

.474 .482 .413 .496 .575 .596 .433

.413 .474 .462 .559 .536 .481 .484 .678 .608 11.024 3.05 .726 .749 .620 .647 .754 .771 .627

.652 .572 .744 .896 .759 .520 .700 .847 .739 12.151 4.05 .797 .771 .794 .729 .724 .840 .692

.638 .640 .751 1.062 .785 .563 .778 .862 13.834 5.05 .974 1.065 .913 .869 1.050 .912 1.017

.605 .853 .940 .818 .654 .762 .829 26.254 6.05 .710 2.493 2.202 1.632 1.994 2.028 2.036 1.828 1.237 1.078 1.077 1.192 1.375 1.555 2.228 14.623 8.05 1.133 1.167 1.793 1.286 .848 1.253 1.396 1.082 .924

.554 .386 .508 .506 .515 .850 1,612 7.972 10.05 .559 .552 .761 .415 .887 .780 .476 .385

.072 .221 .311 .194 .449 1.140 1.189 13.05 .252 .269 .174 .326 .214 .063 .110 2.017

.033 .038 .117 .305 .293 .159 .146 18.00 .074 .064 .046 .008 .021 .028 .001 .002 .132

.000 .001 .020 .014 .017 .015 .028 99.00 .004 .000 .000 .000 .000 .001 7.475 6.263 8.002 7.376 6.878 6.119 100.000 5.304 5.050 4.520 5.098 6.052 8.554 8.879 Total 4.742 4.607 5.080 to" direction.

NOTE: Wind directions in tables are presented In "wind from" and not "wind 4 0 F-

"-

DRE-jEN Revision 1.1 July 1994 w"

Supplemental Table A -Continued Table Summary Elevated Level Joint Frequency DistributIon 300 Foot Elevation Data Speed and Class Summary Table of Percent by DC E F G Class A Speed

.019 .041 .033 .014

.45 .000 .000 .001 .027

.026 .188 .203 .107 1.05 .005 .008 .454 .118

.132 .229 1.618 .979 2.05 .078 1.971 .744 .263

.279 .358 .624 3.471 3.05 3.159 1.166 .295 4.05 .502 .572 .830 4.500 .311

.730 4.832 4.013 1.287 5.05 .465 .513 1.541 .322

.487 .683 5.529 4.808 6.05 .464 9.863 3.289 .593

.768 1.127 9.927 8.05 .687 1.371 .250

.627 5.846 5.844 10.05 .331 .353 .240 .054

.370 3.766 3.118 13.05 .222 .202 .013 .001

.115 1.115 .720 18.00 .024 .030 .000 .000

.007 .065 .060 99.00 .000 .000 F-41

KViSioln I. I July 1994 Supplemental Table B Mixed Mode Joint Frequency Distribution Table Summaries of Percent by Direction and Class 150 Foot ElevationData Summary Table E ESE SE SSE S SSW SW : WSW W WNW NW NNW Total Class N NNE NE ENE

.452 .457 .508 .703 .775 .741 .777 .698 .809 .949 .972 9.821 A .609 .428 .323 .250 .369

.104 .129 .110 .157 .157 .192 .163 .184 .193 .143 .144 .146 2.210 B .096 .098 .107 .086

.130 .102 .127 .163 .200 .162 .121 .198 .177 .165 .150 2.295 C A125 .116 .125 .121 .112

.929 .875 1.120 1.395 1.253 .982 .897 1.489 1.173 1.335 1.316 18.699 D 1.083 .984 1.267 1.306 1.295 2.545 3.353 2.529 1.988 1.218 2.653 2.113 2.091 1.702 33.259 E 1.434 1.483 1.944 2.233 2.262 2.055 1.655

.867 .643 1.036 1.224 1.167 .609 .864 .699 .539 .417 10.781 F .446 .434 .397 .301 .451 .687

.187 .269 .557 .633 .318 .207 .208 .167 3.816 G .200 .123 .094 .084 .069 .105 .366 .230 6.995 6.441 5.760 4.440 6.413 5.322 5.430 4.870 80.882 Total 3.993 3.665 4.256 4.381 4.662 4.488 4.433 5.332 Summary Table of Percent by Direction and Speed SSW SW WSW W WNW NW NNW Total NE ENE E ESE SE SSE S Speed N NNE

.017 .006 .007 .017 .006 .016 .198

.007 .006 .004 .006 .018 .005 .007

.45 .018 .007 .051 .060 .058 .064 .934

.049 .056 .047 .062 .053 .058 .067 1.05 .051 .070 .064 .060 .057 .056 5.828

.349 .380 .388 .432 .347 .339 .324

.365 .421 .392 .371 .340 .315 .397 2.05 .361 .306 .738 .593 .614 .579 11.379

.687 .763 .758 .789 .708 .763 .713 3.05 .664 .674 .698 .841 .796 .891 14.617 1.074 1.024 .922 .757 .972 .790 .847

.731 .854 1.101 1.045 .877 .943 .990 4.05 .799 .862 1.146 .910 1.086 1.024 15.937

.993 1.025 .984 1.109 1.238 1.225 1.126 5.05 .803 .649 .799 .958 .906 .761 12.060

.788 1.151 1.084 .937 .584 .998 .849

.514 .475 .591 .504 .582 .685 .650 6.05 .809 1.436 1.219 1.161 .938 14.726

.598 .609 .534 .939 1.646 1.404 1.175 8.05 .609 .549 .672 .429 .382 .246 4.685

.328 .565 .518 .345 .232 .556 .481

.157 .180 .151 .057 .175 .161 .151 10.05 .040 .030 .061 .056 .032 .027 .519

.003 .018 .014 .012 .031 .084 .061 13.05 .015 .024 012 .000 .000 .000

.000 .000 .000 .000 .000 .000 .000

.000 .000 .000 .000 .000 .000 .000 .000 18.00 .000 .000 .000 .000 .000 .000 .000

.000 .000 .000 .000 .000 .000 .000 99.00 .000 .000 5.760 4.440 6.413 5.322 5.430 4.870 80.882 4.381 4.662 4.488 4.433 5.332 6.995 6.441 Total 3.993 3.665 4.256 NOTE: Wind directions in tables are presented in "wind from" and not "wind to" direction.

(presented in the 250 FT Mixed Mode table) and 19.118% of In order to determine the final mixed mode values, 80.882% of the elevated value to calculate the final values.

the ground level value (presented in the 30 FT Mixed Mode table) are used F-42

U IL CIA -Kevlsion i. i Juty 1994 Supplemental Table B - Continued Table Summaries Mixed Mode Joint Frequency Distribution 150 Foot Elevation Data by Speed and Class Summary Table of Percent 0 E F A B C Class Speed

.075 .042 .050

.001 .000 .023

.45 .006 .315 .227 .168

.008 .016 .170 1.05 .029 .952 .640

.180 .206 1.247 1.986 2.05 .616 4.046 1.830 .811

.385 .309 2,341 3.05 1.657 2.433 .806

.404 .379 2.832 5.796 4.05 1.968 6.745 2.558 .765

.384 .416 3.451 5.05 1.618 5.242 1.621 .421

.289 .300 2.823 6.05 1.363 1.038 .153

.405 .480 4.055 6.729 8.05 1.866 2.108 .076 .001

.623 .138 .166 1.573 10.05 .217 .004 .000

.016 .023 .184 13.05 .075 .000 .000 .000

.000 .000 .000 18.00 .000 .000 .000

.000 .000 .000 99.00 .000 .000 F-43

July 1994 Supplemental Table B - Continued Mixed Mode Joint Frequency Distribution Table Summaries 35 Foot Elevation Data by Direction and Class Summary Table of Percent i W WNW NW NNW Total S SSW SW WSW ENE ESE SE SSE N NNE NE E Class

.224 .180 2.219g

. 528

.205 .246 .208 .171 .187 .243

.064 .038 .051 .064 .066 .093 .039 .029

.090 .090 .036 .044 .068 .062 .632 AA .019 .0 .0 .0 .0 .010 .014 .015 .014 .029 .047 .065

.057 .045

.0 .0 .012 . .01 .019 .013 .033 .060 .077 .040 .040 .064 .086 5.517 C .0 .0 .0 .0 8.433

.455 .308 .309 .573 .513 .416 .394

.251 .181 .274 .191 .176 .339 .577 1.420 D .286 .274 .473 .371 .907 .736 .537 .307

.293 .481 .444 .372 .726 1.028 .719 . 369 E .295 .318 .345 .123 .159 .164 .161 .077 .128 .089 .063 .061 F .035 .041 .027 .014 .054 .138 .086 .033 .054 .079 .022 .017 .016 .023 .018 G .005 .002 .005 .001 .009 .055 .016 .013 tg_118 1.944 -

1.o .4 ... ..

.743 1.357 2.109 1.780 1.305 1.034

.752 .764 .734 .550 .899 .927 Total and Speed Summary Table of Percent by Direction SSW SW WSW W WNW NW NNW Total ENE E ESE SE SSE S N NNE NE Speed

.007 .003 .000 .000 .023

.069

.000 .004 .000 .000 .000 .003 .003

.45 .000 .001 .000 .001 .000 .007 .004 .004 .005 .004 .004 .985 1.05 .004 .002 .002 .002 .002 .001 .003 .006 .008 .011

.037 .060 .078 .098 .081 .040 .064 .057 .069 .068 2.727 2.05 .053 .064 .047 .037 .057 .076

.122 .175 .189 .178 .184 .095 .202 .182 .162 .181 3.176 3.05 .128 .145 .156 .162 .203 .261 2.425

.213 .189 .146 .273 .220 .233 .210 2.133

.142 .200 .161 .192 .193 .163 .238 .251 4.05 152 .229 .216 .199 .151

.122 .117 .112 176 .220 .179 .157 .130 4.592 5.05 .107 .098 .117 .096 .208 .A38 .A23 .228 .201 .181 .125 6.05 105 .080 .090 .041 .098 .086 .076 .150 .203 2.170 8.05 159 .196 .104 .040 .190 .133 .151 .332 .549 .459 .309 .244 .587 .528 .372 .240

.049 .062 166 .422 .336 .167 .141 .226 .247 .109 .117 .733 10.05 .037 .034 .016 .010 .031 008 .000 .002 .000 .003 .009 .03 .050 .173 .087 .064 .091 .107 .076 .029 .019 .082 13.05 18.00 .000 .000 .000 .000 .000 .000 .000 004 .016 .012 .006 .018 .014 .012 .001 .000 .001 99.00 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .001 .000 .000 .000 t9.118 1.034 1.944 1.746 1.359 1.115

.743 1.357 2.109 1.780 1.305

.764 .734 .550 .899 .927 Total .752 NOTE: Wind directions in tables are presented in "wind from" and not "wind to" direction.

F-44

DRE._.*N ... - ii .1 July 1994 Supplemental Table B - Continued Mixed Mode Joint Frequency Distribution Table Summaries 35 Foot Elevation Data and Class Summary Table of Percent by Speed C D E F G Class A 8 Speed

.000 .007 .007 .003 .005

.45 .000 .000

.000 .007 .013 .027 .022 1.05 .000 .000

.005 .064 .379 .369 .156 2.05 .007 .006

.047 .474 1.240 .573 .150 3.05 .198 .045

.089 .825 1.490 .298 .033 4.05 .363 .078

.084 .712 1.124 .078 .002 5.05 .349 .076

.079 .693 .956 .033 .000 6.05 .305 .067

.181 1.630 1.998 .036 .000 8.05 .601 .147

.109 .789 .881 .002 .000 10.05 .304 .085

.033 .271 .318 .000 .000 13.05 .090 .022

.005 .044 .028 .000 .000 18.00 .001 .004

.000 .001 .000 .000 .000 99.00 .000 .000 F-45

i- July 1994 Supplemental Table C Ground Level Joint Frequency Distribution Table Summary DRESDEN JFD 1978-1987 GROUND LEVEL (35 FT)

Summary Table of Percent by Direction and Class SE SSE S SSW SW WSW W WNW NW NNW Total Class N NNE NE ENE E ESE

.580 .888 1.027 .915 .946 .913 1.070 1.259 1.093 12.055 A .688 .524 .386 .304 .405 .510 .547

.187 .216 .255 .168 .237 .249 .224 .195 .152 2.733 B .129 .119 .126 .094 .122 .140 .121

.169 .220 .273 .182 .160 .254 .286 .220 .203 2.919 C .146 .138 .143 .127 .127 .155 .112 1.913 1.732 1.218 1.163 2.085 1.788 1.814 1.707 24.236 D 1.337 1.295 1.544 1.343 1.569 1.166 1.044 1.517 3.985 3.034 2.273 1.533 3.470 3.018 2.679 2.131 41.723 E 1.744 1.823 2.399 2.168 2.907 2.736 2.170 3.654 1.166 1.166 1.165 .597 .971 .793 .631 .588 12.171 F .429 .442 .389 .266 .618 1.217 .778 .956

.483 .643 .197 .178 .262 .390 .338 4.163

.120 .082 .056 .054 .121 .551 .170 .188 .327 G

8.715 7.968 6.564 4.833 8.121 7.442 7.189 6.212 100.000 4.593 4.424 5.043 4.356 5.871 6.475 4.942 7.252 Total Summary Table of Percent by Direction and Speed S SSW SW WSW W WNW NW NNW Total N NNE NE ENE E ESE SE SSE Speed

.020 .070 .034 .049 .049 .058 .050 .838

.056 .077 .053 .029 .091 .058 .014 .052

.45 .078 .259 .246 .182 .231 .265 .299 .287 4.058

.229 .265 .227 .240 .216 .234 .251 .267 1.05 .361 1.363 1.216 .807 1.109 1.051 1.272 1.264 18.369 1.188 1.118 .939 1.244 1.445 .921 1.150 1.236 2.05 1.046 1.477 .932 1.624 1.476 1.383 1.496 23.345 1.484 1.764 2.167 1.228 1.594 1.597 1.470 3.05 1.096 1.186 1.370 .896 1.559 1.330 1.407 1.263 19.439

.983 1.208 1.227 1.084 1.531 1.592 1.357 1.143 4.05 .884 .799 1.177 .707 1.146 1.135 1.047 .779 12.600

.632 615 .624 .976 1.196 .984 .844 5.05 .501 .421 .571 .422 .838 .815 .504 9.064

.379 .365 .704 .926 .962 .625 .541 .979 6.05 .335 .237 .301 160 .393 .761 .428 9.062

.343 .785 1.173 1.062 .680 .477 1.063 .949 8.05 .246 .275 .146 .077 .324 .273 .122 2.409

.487 .391 .192 .150 .237 .261 .117

.034 .016 010 .033 .055 .072 .194 10.05 .037 .064 .091 .107 .076 .029 .019 .732

.002 .000 .003 .009 .013 .050 .173 .087 13.05 .008 .000 .017 .014 .012 .001 .000 .082

.000 .000 .000 .000 .003 .016 .012 .006 18.00 .000 .000 .000 .000 .000 .000 .001

.000 .000 .000 .000 .000 .000 .000 .001 99.00 .000 .000 .000 .000 .000 7.968 6.564 4.833 8.121 7.442 7.189 6.212 100.000 4.424 5.043 4.356 5.871 6.475 4.942 7.252 8.715 Total 4.593 NOTE: Wind directions in tables are presented in "wind from" and not "wind to" direction.

F-46

July 1994 Supplemental Table C - Continued Ground Level Joint Frequency Disiriutlon Table Summary and Class Summary Table of Percent by Speed C D E F G Class A B Speed

.003 .073 .274 .260 .212

.45 .012 .003

.035 .406 1.413 1.326 .785 1.05 .070 .023

.351 2.809 6.958 4.678 2.000 2.05 1.227 .346

.567 4.668 9.964 3.797 .981 3.05 2.762 .608

.597 5.211 8.689 1.593 .177 4.05 2.612 .560

.463 3.77q 5.580 .360 .007 5.05 1.995 .422

.371 2.954 3.827 .103 .001 6.05 1.488 .321

.372 3.159 3.719 .052 .000 8.05 1.433 .328

.122 .868 .955 .002 .000 10.05 .365 .097

.033 .271 .317 .000 .000 13.05 .090 .022

.005 .044 .028 .000 .000 18.00 .001 .003

.000 .001 .000 .000 .000 99.00 .000 .000 F-47

.604000 Gaseous Unrestricted AreaBoundary It

Meteorological Tower

Revision 1.1 July 1994

-* Interim Radwaste Storage Facility 500 aI 593 I15 1903 IU FEET 1

-- Radwaste Storage Area (When Operational, this GRAPHIC SCALE area may include 48-packs, DAW, and other types of storage)

Area Boundary - Extended Area OFFSITE DOSE CALCULATION MANUAL (When the Radwaste Storage Area becomes DRESDEN STATION operational, this area becomes part of the total Restricted Area.)

FIGURE F-2 RESTRICTED AREA BOUNDARY F-49

Summary of Changes to DNPS ODCM

Summary of Offsite Dose Calculation Manual (ODCM)

Changes by Dresden Station in 2001 Chanter- Revision Number Revision Date Chapter 10, Revision 2.2 April 2001 Chapter 12, Revision 1.12 April 2001 Chapter 12, Revision 1.13 December 2001

Dresden Station Chapter 10 Change Summary ODCM Revision 2.2, April 2001 Page Change Description 10-i Updated the revision number, date and file designator.

10-8 In 10.2.3.1.1, "Liquid Radwaste Effluent Monitor," changed the definition of DWCi to be equal to ten (10) times the concentration in Appendix B, Table 2, Column 2 of 10 CFR20.1001-2402. The previous revision allowed the use of ten times the table value upon Technical Specification approval.

10-8 Deleted Footnote 1 which allowed the use of ten (10) times the concentration in Appendix B, Table 2, Column 2 of 10 CFR20.1001-2402 upon Technical Specification approval.

10-9 In 10.2.3.2.1, "Release Tank Discharge Flow Rate," changed the definition of DWCi to be equal to ten (10) times the concentration in Appendix B, Table 2, Column 2 of 10 CFR20.1001-2402. The previous revision allowed the use of ten times the table value upon Technical Specification approval.

10-9 Deleted Footnote 2 which allowed the use of ten (10) times the concentration in Appendix B, Table 2, Column 2 of 10 CFR20.1001-2402 upon Technical Specification approval.

Dresden Station Chapter 12 Change Summary ODCM Revision 1.12, April 2001 Page Change Description 12-i Updated the revision number, date and file designator.

12-ii Updated the revision number.

12-iii to 12-v Updated Table of Contents to reflect proper page numbers.

12-v Revised title of Table 12.1-2 from "Operational Modes" to "Modes".

12-1 Inserted Definitions 1, "Channel Calibration", 2, "Channel Check", and 3, "Channel Functional Test" and Deleted Definitions for "Instrument Calibration", "Instrument Check", and "Instrument Functional Test".

12-1 Renumbered Definitions based on insertions and deletions.

12-1 In 12.1 Definition 5, "Dose Equivalent 1-131", revised "microcurie" to "microcuries" and "which" to "that" in line 1. Added "AEC, 1962" to line

4. Added the following at end of definition: "; Table E-7 of Regulatory Guide 1.109, Rev. 1, NRC, 1977; or ICRP 30, Supplement to Part I, pages 192-212, Table titled, "Committed Dose Equivalent in Target Organs or Tissues per Intake of Unit Activity."

12-1 In 12.1 Definition 6, "Frequency", revised title from "Frequency Notation" to "Frequency". Deleted "Refer to Technical Specification Table 1-1" from end and added new statement at end to address maximum allowable surveillance extensions.

12-1 In 12.1 Definition 7, "Immediate", revised definition to state that action "should be pursued without delay in a controlled manner." The previous revision stated that action "will be initiated as soon as practicable considering the safe operation of the unit and the importance of the required action."

12-1 In 12.1 Definition 8, "Member of the Public", added "Member of the Public means" to the beginning of the definition.

12-2 Completely revised 12.1 Definition 9, "Mode".

12-2 In 12.1 Definition 11, "Offsite Dose Calculation Manual (ODCM)",

reworded paragraph for clarity with no change to requirements.

Page Change Description 12-2 In 12.1 Definition 12, "Operable - Operability", revised title from "Operable" to "Operable - Operability". Revised "train" to "division" in line 1. Eliminated capital letter font of "OPERABLE" and "OPERABILITY" in lines 1 and 2. Added "safety" prior to "function" in line 2. Revised "or" to "and" in two locations on line 4. Revised "train" to "division" in line 5.

12-2 In 12.1 Definition 13, "Process Control Program (PCP)", added "- The PCP" to the beginning of the definition.

12-2 In 12.1 Definition 15, "Rated Thermal Power", added "(RTP)" to title and revised "Rated thermal power" to "RTP" at beginning of definition.

12-3 In 12.1 Definition 17, "Source Check", added "Source check is" at the beginning of the definition.

12-4 In Table 12.1-1, deleted asterisked (*) footnote which addressed the maximum allowable extension for surveillances.

12-4 In Table 12.1-1, added new frequency notation for biennial surveillances.

12-5 In Table 12.1-2, revised table title from "OPERATIONAL MODES" to "MODES". Extensive changes are made to the table contents and footnotes to conform to Table 1.1-1 of the Improved Technical Specifications.

12-6 In 12.2.A.2.1., revised "source check, instrument check, calibration, and functional test" to "Source Check, Channel Check, Channel Calibration, and Channel Functional Test".

12-7 In 12.2.B.2., revised " source check, instrument check, calibration, and functional test" to "Source Check, Channel Check, Channel Calibration, and Channel Functional Test".

12-9 In Table 12.2-2, revised column headings for "Functional Test",

"Calibration", and "Instrument Check" to read "Channel Functional Test",

"Channel Calibration" and "Channel Check", respectively. Reversed the order in which the Liquid Radwaste Effluent Gross Activity Monitor and the Service Water Effluent Gross Activity Monitor appear in the table.

Revised the surveillance frequency of the Channel Calibration and Source Check on both monitors from sesquiannual to biennial.

Page Change Description 12-10 In footnotes (a) through (f) of Table 12.2-2, revised ""Functional Test",

"Calibration", and "Instrument Check" to read "Channel Functional Test",

"Channel Calibration" and "Channel Check", respectively. In footnote (f),

changed "once every 18 months" to "once every 24 months" for required Channel Calibration frequency.

12-11 In Table 12.2-3, Unit 1, revised instrument names to be in the singular (remove 's' at end of instrument names).

12-12 In Table 12.2-3, Units 2 & 3, revised the Technical Specification reference in the entry for Reactor Building Vent Exhaust Duct Radiation Monitor.

12-14 In Action 26, removed "pursuant to Technical Specification 6.9.B" from line 4.

12-14 In Action 29, revised "HOT STANDBY" to "MODE 2".

12-15 In Table 12.2-4, Unit 1, revised column headings for "Functional Test",

"Calibration", and "Instrument Check" to read "Channel Functional Test",

"Channel Calibration" and "Channel Check", respectively.

12-16 In Table 12.2-4, Units 2 & 3, revised column headings for "Functional Test", "Calibration", and "Instrument Check" to read "Channel Functional Test", "Channel Calibration" and "Channel Check", respectively. Revised the Technical Specification reference in the entry for Reactor Bldg Vent Exhaust Duct Radiation Monitor.

12-16 In Table 12.2-4, Units 2 & 3, revised the surveillance frequency of the Channel Calibration for the following monitors from sesquiannual to biennial: Main Chimney Flow Rate Monitor, Main Chimney Sampler Flow Rate Monitor, Reactor Bldg Vent Flow Rate Monitor, Reactor Bldg Sampler Flow Rate Monitor, and Off Gas Radiation Monitor. Revised the surveillance frequency of the Source Check for the Off Gas Radiation Monitor from sesquiannual to biennial.

12-17 In footnotes (a) through (e) of Table 12.2-4, revised "Functional Test",

"Calibration", and "Instrument Check" to read "Channel Functional Test",

"Channel Calibration" and "Channel Check", respectively. In footnote (e),

changed "once every 18 months" to "once every 18 months for Unit 1 and 24 months for Units 2 and 3" for required Channel Calibration frequency.

Page Change Description 12-19 In 12.3.A. 1., added "maximum instantaneous" before "concentration" in line 1. Added "ten (10) times" before "the concentrations" in line 3.

Removed footnote 1 which allowed use of ten (10) times the values in Appendix B, Table 2, Column 2 of 10CFR20.1001-20.2402.

12-25 In Table 12.3-2, Units 2 & 3, revised Technical Specification references in Sampling Frequency and Minimum Analysis Frequency for the Above Ground Liquid Storage Tanks to state "See Technical Requirements Manual".

12-33 In 12.4.A.4.2., revised "30 percent of rated thermal power" to "30% RTP".

12-33 In 12.4.A.4.5., revised "30 percent of rated thermal power" to "30% RTP".

12-34 In 12.4.A.5., "Main Condenser Air Ejector", revised the release rate requirement as measured at the main condenser air ejector from "< 100 microcuries/sec per MWt" to "< 252,700 microcuries/sec". Revised action statement from "or be in at least STARTUP with the main steam isolation valves closed within the next 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months " to "either isolate all main steam lines or isolate the SJAE within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months , or be in MODE 3 in the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in MODE 4 in the next 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months ". Revised Technical Specification reference at end of the section.

12-34 Revised footnote a from "When the main condenser air ejector is in operation" to "With any main steam line not isolated and steam jet air ejector (SJAE) in operation.

12-36 In 12.4.B.5.2., added "once" at the beginning of the section. Revised section to clarify what is meant by an increase of greater than 50%.

12-36 In 12.4.B.5., revised Technical Specification reference at end of section.

12-41 In footnote (2) of Table 12.4-1, revised "20 percent of rated thermal power" to "20% RTP".

12-41 In footnote (3) of Table 12.4-1, revised "20% of rated thermal power" to "20% RTP".

12-60 In 12.6.2.1., "Radioactive Effluent Release Report", the paragraph in the previous revision is split into two paragraphs, one for Unit 1 and one for Units 2 and 3. The report submittal date for Units 2 and 3 is revised to May 1 in accordance with Improved Technical Specification (ITS) 5.6.3.

Other wording revisions are made to conform to that in ITS 5.6.3.

Page Change Description 12-61 In 12.6.2.2., "Annual Radioactive Environmental Operating Report", the paragraph in the previous revision is split into two paragraphs, one for Unit 1 and one for Units 2 and 3. The report submittal date for Units 2 and 3 is revised to May 15 in accordance with Improved Technical Specification (ITS) 5.6.2. Other wording revisions are made to conform to the wording in ITS 5.6.2.

12-62 In 12.6.3, "Offsite Dose Calculation Manual (ODCM), wording revisions are made to conform to the wording in Improved Technical Specification 5.5.1.

Dresden Station Chapter 12 Change Summary ODCM Revision 1.13, December 2001 Page Change Description All pages Updated the revision number, date and file designator.

12-ii Updated the revision number.

12-2 In 12.1.15, the definition of "Rated Thermal Power (RTP), revised the wording to include the proper value of this parameter after implementation of Extended Power Uprate.

Revised DNPS 2000 Radioactive Effluent Release Report

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBERS: 50-010/50-237/50-249 Regulatory Limits

a. For Noble Gases Dose Rate

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

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

Dose Gamma Radiation

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

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

Beta Radiation

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

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

b.,c. For Iodine-13 1, for Iodine-133, and for all radionuclides in particulate form with half-lives greater than 8 days.

Dose Rate

1) Less than 1500 mremnyear.

Dose

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. For Liquid

1) Less than or equal to 3 mrem to the whole body during any calendar quarter.

2) Less than or equal to 10 mrem to any organ during any calendar quarter.

3) Less than or equal to 6 mrem to the whole body during any calendar year.

4) Less than or equal to 20 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.

d. For liquid effluents, allowable release limits are calculated by solving equations 10.3 and 10.4 from the Offsite Dose Calculation Manual.

1

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBERS: 50-010/50-237/50-249

3. Average Energy The average energy of fission and activation gases was calculated for the gaseous effluents released from the site.

The average energy is based on the percentage of each fission gas nuclide present and its average energy per disintegration (E in MeV/dis) for gamma and beta emissions separately.

EGAMMA - 5.90E-01 MeV/dis EBETA = 3.99E-01 MeV/dis

4. Measurement and Approximations of Total Radioactivity

a. Fission and Activation Gases:

b. Todines:

c. Particulates:

The Units 2/3 and Unit 1 Chimneys, Units 2/3 Reactor Building Vent and Unit 1 Chemical Cleaning Building effluents are continually sampled for iodines and particulates. These samples are pulled weekly and analyzed by gamma isotopic. The particulate filters are composited and sent to a vendor for gross alpha, Sr-89/90 and Fe-55 analysis. Noble gas grab samples are pulled and analyzed by gamma isotopic weekly. Tritium samples are pulled and analyzed monthly.

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

d. Liquid Effluents:

The river discharge tanks are analyzed by isotopic 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, H-3, Fe-55, Sr-89/90 content.

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

e. 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.

f. Equipment out-of-service None.

g. Estimation of Data/Corrections:

None.

2

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through June 2000 DOCKET NUMBERS: 50-010/50-237/50-249 SUMMATION OF ALL GASEOUS RELEASES UNITS IST Ouarter 2nd Quarter Est. Total Error %

A. FISSION & ACTIVATION GASES

1. Total Release Ci 4.48E+01 3.93E+01 7.31%

2. Average Release Rate for the Period ýtCi/sec 4.3 1E+01 2.5 1E+01

3. Percent of Technical Specification Limit %*

B. IODINES

1. Total Iodine-131 Ci 1.12E-03 1.39E-03 21.6%

2. Average Release Rate of 1-131 for the Period ILCi/sec 1.43E-04 1.77E-04

3. Percent of Technical Specification Limit % * *

4. Total Iodine-131, Iodine-133 and Iodine-135 Ci 3.53E-02 4.75E-02 C. PARTICULATES

1. Particulates with half-lives > 8 days I Ci 5.30E-03 4.96E-03 34.1%

2. Average Release Rate for the Period tiCi/sec 6.74E-04 6.31 E-04

3. Percent of Technical Specification Limit % * *

4. Gross Alpha Radioactivity Ci 7.92E-06 3.83E-06 D. TRITIUM

1. Total Release Ci 9.77E+00 4.32E+00 7.89%

2. Average Release Rate for the Period IACi/sec 1.24E+00 5.49E-01

t

3. Percent of Technical Specification Limit %

The information 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, tritium.

3

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT July Through December 2000 DOCKET NUMBERS: 50-010/50-237/50-249 SUMMATION OF ALL GASEOUS RELEASES UNITS 3 Quarter 4th Quarter Est. Total Error, %

A. FISSION & ACTIVATION GASES

1. Total Release Ci 6.83E+01 2.71E+01 7.31%

2. Average Release Rate for the Period ItCi/sec 8.60E+00 3.41E+00

3. Percent of Technical Specification Limit % *

B. IODINES

1. Total Iodine-131 Ci 1.42E-03 5.94E-04 21.6%

2. Average Release Rate of 1-131 for the Period XCi/sec 1.79E-04 7.48E-05

3. Percent of Technical Specification Limit % * *

4. Total Iodine-131, Iodine-133 and Iodine-135 Ci 3.49E-02 5.99E-03 C. PARTICULATES

1. Particulates with half-lives > 8 days Ci 2.25E-03 4.14E-03 34.1%

2. Average Release Rate for the Period gCi/sec 2.83E-04 5.211E-04

3. Percent of Technical Specification Limit % * *

4. Gross Alpha Radioactivity Ci 7.44E-06 3.08E-06 D. TRITIUM

1. Total Release Ci 4.01E+00 1.63E+01 7.89%

2. Average Release Rate for the Period

3. Percent of Technical Specification Limit -F -F 1-

[tCi/sec 5.04E-01 2.05E+00 1

The information 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, tritium.

4

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBERS: 50-010/50-237/50-249 TABLE OF LOWER LIMITS OF DETECTABILITY FOR AIRBORNE EFFLUENTS

1. FISSION/ACTIVATION GASES gCi/ml Kr-87 1.00E-06 Kr-88 1.00E-06 Xe-133 1.00E-06 Xe- 133m 1.00E-06 Xe-135 1.00E-06 Xe-138 1.00E-06

2. IODINES gCi/ml 1-131 1.00E-12 1-133 1.OOE-10

3. PARTICULATES jjCi/ml Sr-89 1.00E-11 Sr-90 1.00E- 1I Mn-54 1.00E- 11 Fe-59 1.00E-11 Co-58 1.00E-11 Co-60 1.00E-1 1 Zn-65 1.00E- 11 Mo-99 1.OOE- 11 Cs-134 1.00E-1 1 Cs-137 1.OOE- 11 Ce-141 1.OOE- 11 Ce-144 1.OOE- 11

4. OTHER gCi/ml H-3 1.00E-06 Gross Alpha 1.OOE-1 1 The above values are the ODCM-required LLDs. Actual analyses always met the required LLDs.

5

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 GASEOUS EFFLUENTS DOCKET NUMBERS: 50-010 D1 MAIN CHIMNEY GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES xx ELEVATED RELEASES CONTINUOUS MODE NUCLIDES RELEASED UNIT 1s QTR 2d QTR 3 rd QTR 4 1h 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 1.04E-06 4.17E-06 *

5.21E-06 Xe-135m Ci * * * *

Xe-138 Ci * * * *

TOTAL Ci 1.04E-06 4.17E-06 None None 5.21E-06 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 * * * *

Be-7 Ci * * * *

Cr-51 Ci * * * *

Mn-54 Ci 1.66E-07 *

4.37E-07 6.03E-07 Co-57 Ci * * * *

Co-58 Ci * * * *

Ci * * * *

Fe-59 Co-60 Ci 6.75E-07 2.13E-07 2.95E-07

1.18E-06 Zn-65 Ci * * * *

Sr-85 Ci * * * *

Zr-95 Ci * * * *

Mo-99 Ci * * * *

Ru-103 Ci * * * *

Cd-109 Ci 2.08E-06 3.80E-06 *

5.88E-06 Ag-110m Ci * * * *

Sn-113 Ci * * * *

Sb- 124 Ci * * * *

Sb-125 Ci * * * *

Cs-134 Ci * * * *

Cs-136 Ci * * * *

Cs-137 Ci 1.83E-07 3.44E-07

5.27E-07 Ba-133 Ci * * * *

Ci * * * *

Ba-140 Ce-141 Ci * * * *

Ce-144 Ci * * * *

TOTAL Ci 2.92E-06 4.20E-06 6.39E-07 4.37E-07 8.19E-06

The activity of this nuclide is less than the LLD.

6

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DI MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBERS: 50-010 GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES xx ELEVATED RELEASES BATCH MODE NUCLIDES RELEASED UNIT I" QTR 2'0 QTR 3 rd QTR 4"h QTR TOTAL FISSION GASES Ar-41 Ci * * * *

Kr-85 Ci *

1.10E+01

1.lOE+O1 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 1.10E+01 None 1.10E+01 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 * * * *

Be-7 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-1 10m 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

The activity of this nuclide is less than the LLD.

7

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 D2/3 REACTOR BUILDING VENT GROUND LEVEL RELEASES xx SEMI-ELEVATED RELEASES ELEVATED RELEASES CONTINUOUS MODE 4 QTR TOTAL NUCLIDES RELEASED UNIT 1st QTR 2' QTR 3 rd QTR FISSION GASES

Ar4 i****

Ar-41 Ci***

Kr-85 Ci * *

Ci * * * *

Kr-85m Ci * * * *

Kr-87 Ci * * * *

Kr-88 Ci *

2.02E-05

2.02E-05 Xe-131m Ci 1.73E-06

1.41E+01

1.41E+01 Xe-133 Ci 3.02E-04 2.93E-05 3.28E-05 2.39E-05 3.88E-04 Xe-135 Ci 1.71E-04 * *

1.71E-04 Xe-135m Ci * * * *

Xe-138 Ci 4.76E-04 2.93E-05 1.41E+01 2.39E-05 1.41E+01 TOTAL IODINES Ci 1.37E-04 1.02E-05 3.85E-05 3.53E-06 1.89E-04 1-131 Ci 1.24E-03 5.5 1E-05 1.72E-04 4.83E-05 1.52E-03 1-133 Ci 3.02E-03 *

8.33E-04 3.85E-03 1-135 Ci 4.26E-03 5.51E-05 1.72E-04 8.81E-04 5-37E-03 TOTAL PARTICULATES Ci 3.50E-04 1.42E-04 3.30E-04 2.46E-04 1.07E-03 Fe-55 Ci * * * *

Sr-89 Ci * * * *

Sr-90 Ci * * * *

Be-7 Ci 1.03E-03

1.82E-05 1.81E-05 1.07E-03 Cr-51 Ci 1.55E-04 2.61E-05 4.81E-05 9.17E-05 3.20E-04 Mn-54 Ci * * *

Co-57 Ci 5.62E-05

1.98E-06 1.26E-06 5.94E-05 Co-58

6.45E-06 3.19E-06 9.64E-06 Fe-59 Ci Ci 2.09E-04 2.82E-05 5.73E-05 5.26E-05 3.47E-04 Co-60 Ci 3.28E-05

8.99E-06 9.47E-06 5.13E-05 Zn-65 Ci * * * *

Sr-85 Ci 6.63E-06 1.49E-07

1.97E-06 8.75E-06 Sr-89 Ci 1.27E-06 4.08E-08 *

1.31E-06 Sr-90

* *

Zr-95 Ci

5.82E-05 * *

5.82E-05 Mo-99 Ci Ci * * * *

Ru-103 Ci * * * *

Ag-110m 2.07E-06 * *

2.07E-06 Sn-1 13 Ci Ci 5.33E-07 * *

5.33E-07 Sb-124 Ci * * * *

Sb-125 Ci * * * *

Cs-134 Ci * * * *

Cs- 137 Ci 1.35E-03

6.30E-06

1.36E-03 Ba-140 Ci * *

3.48E-07 3.48E-07 Ce- 141

4.99E-06 4.99E-06 Ce-144 Ci

Ci

9.57E-07 *

9.57E-07 Hg-203 Ci 3.25E-03 1.97E-04 4.77E-04 4.29E-04 4.36E-03 TOTAL

The activity of this nuclide is less than the LLD.

8

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 D2/3 REACTOR BUILDING VENT GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 GROUND LEVEL RELEASES xx SEMI-ELEVATED RELEASES ELEVATED RELEASES BATCH MODE NUCLIDES RELEASED UNIT Ist QTR 2'n 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-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 1-135 Ci TOTAL Ci None None None None None PARTICULATES Fe-55 Ci Sr-89 Ci Sr-90 Ci Be-7 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- 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

The activity of this nuclide is less than the LLD.

9

DRESDEN T*JCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 D2/3 MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES xx ELEVATED RELEASES CONTINUOUS MODE NUCLIDES RELEASED UNIT ISt QTR 2n, QTR 3 rd QTR 4 h QTR TOTAL FISSION GASES Ar-41 Ci 8.49E-01 5.74E-01 1.21E+00 1.51E-01 2.78E+00 Kr-85 Ci *

2.83E-03

2.83E-03 Kr-85m Ci 2.81E+00 1.81E+00 4.55E-01 2.43E-01 5.32E+00 Kr-87 Ci 8.29E-01 9.14E-01 8.68E-01 6.95E-01 3.31E+00 Kr-88 Ci 1.86E+00 9.84E-01 7.28E-01 5.64E-01 4.13E+00 Xe-131m Ci

2.32E-02 *

2.32E-02 Xe-133 Ci 5.03E+00 3.10E+00 9.91E-01 3.69E-01 9.49E+00 Xe-133m Ci

1.29E-03 *

1.29E-03 Xe-135 Ci 1.18E+01 8.64E+00 1.34E+01 9.04E+00 4.29E+01 Xe-135m Ci 4.09E+00 4.79E+00 8.61E+00 3.13E+00 2.06E+01 Xe-138 Ci 1.75E+01 1.85E+01 1.69E+01 1.29E+01 6.58E+01 TOTAL Ci 4.48E+01 3.93E+01 4.32E+01 2.71E+01 1.54E+02 IODINES 1-131 Ci 9.84E-04 1.38E-03 1.41E-03 5.91E-04 4.37E-03 1-133 Ci 6.77E-03 8.49E-03 6.72E-03 2.72E-03 2.47E-02 1-135 Ci 2.33E-02 3.75E-02 2.65E-02 1.80E-03 8.92E-02 TOTAL Ci 3.1OE-02 4.74E-02 3.47E-02 5.1OE-03 1.18E-01 PARTICULATES Fe-55 Ci 3.56E-04 1.81E-04 3.57E-04 1.20E-03 2.09E-03 Be-7 Ci * * * *

Cr-51 Ci 2.64E-04 2.32E-04

8.14E-05 5.77E-04 Mn-54 Ci 1.89E-04 3.42E-05 5.92E-05 5.27E-04 8.09E-04 Co-57 Ci * * * *

Co-58 Ci 3.89E-05 9.04E-06 1.16E-05 5.43E-05 1.14E-04 Fe-59 Ci * *

4.07E-05 4.07E-05 Co-60 Ci 3.11E-04 2-49E-04 3.24E-04 3.97E-04 1.28E-03 Zn-65 Ci 1.64E-05 5.75E-05 7.21E-06 1.21E-04 2.02E-04 Sr-85 Ci

2.99E-03 1.29E-05

3.00E-03 Y-88 Ci *

2.06E-06

2.06E-06 Sr-89 Ci 3.50E-04 2.83E-04 3.43E-04 2.67E-04 1.24E-03 Sr-90 Ci 4.11 E-08 1.35E-06 2.1 1E-06 2.06E-06 5.55E-06 Zr-95 Ci * * * *

Mo-99 Ci * * * *

Ru- 103 Ci * *

2.63E-04 2.63E-04 Cd- 109 Ci * *

8.39E-05 8.39E-05 Ag- 110m Ci *

2.91E-05

2.91E-05 Sn-117m Ci * *

3.72E-05 3.72E-05 Sb-124 Ci * * * *

Sb-125 Ci

1.41E-05 1.78E-05

3.19E-05 Cs-134 Ci 5.38E-05

1.13E-05 6.51E-05 Cs- 137 Ci 1.65E-06 *

1.65E-06 Ba-140 Ci 5.18E-04 6.54E-04 5.99E-04 5.18E-04 2.29E-03 Ce-141 Ci * * * *

Ce- 144 Ci * * * *

TOTAL Ci 2.04E-03 4.76E-03 1.77E-03 3.60E-03 1.22E-02 The activity of this nuclide is less than the LLD.

10

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 D2/3 MAIN CHIMNEY GASEOUS EFFLUENTS DOCKET NUMBERS: 50-237/50-249 GROUND LEVEL RELEASES SEMI-ELEVATED RELEASES xx ELEVATED RELEASES BATCH MODE NUCLIDES RELEASED UNIT 1s' QTR 2' QTR 3d 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-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 1-135 Ci TOTAL Ci None None None None None PARTICULATES Fe-55 Ci Sr-89 Ci Sr-90 Ci Be-7 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-110m 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

The activity of this nuclide is less than the LLD.

11

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 CHEMICAL CLEANING BUILDING GASEOUS EFFLUENTS DOCKET NUMBERS: 50-010/50-237/50-249 GROUND LEVEL RELEASES xx SEMI-ELEVATED RELEASES ELEVATED RELEASES CONTINUOUS MODE NUCLIDES RELEASED UNIT Ist QTR 2n, QTR 3 rd 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 * * * *

1-133 Ci * * * *

1-135 Ci * * * *

TOTAL Ci None None None None None PARTICULATES Fe-55 Ci *

2.75E-06 4.65E-08 2.79E-06 Sr-89 Ci * * * *

Sr-90 Ci * * * *

Be-7 Ci * * * *

Cr-51 Ci * * * *

Mn-54 Ci 1.57E-07

2.20E-07

3.77E-07 Co-57 Ci * * * *

Co-58 Ci * * * *

Fe-59 Ci * * * *

Co-60 Ci 4.39E-07 8.OOE-08 *

5.19E-07 Zn-65 Ci * * * *

Sr-85 Ci * * * *

Zr-95 Ci * * * *

Mo-99 Ci * * * *

Ru-103 Ci * * * *

Ag-ll0m 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 5.96E-07 8.OOE-08 2.97E-06 4.65E-08 3.69E-06

The activity of this nuclide is less than the LLD.

12

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 CHEMICAL CLEANING BUILDING GASEOUS EFFLUENTS DOCKET NUMBERS: 50-010/50-237/50-249 GROUND LEVEL RELEASES xx SEMI-ELEVATED RELEASES ELEVATED RELEASES BATCH MODE NUCLIDES RELEASED UNIT 1st QTR 2nkQTR 3 rd 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 1-133 Ci 1-135 Ci TOTAL Ci None None None None None PARTICULATES Fe-55 Ci Sr-89 Ci Sr-90 Ci Be-7 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- 110m 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

The activity of this nuclide is less than the LLD.

13

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBERS: 50-010/50-237/50-249 TABLE OF LOWER LIMITS OF DETECTABILITY FOR LIQUID EFFLUENTS

1. FISSION/ACTIVATION GASES RCi/mi Kr-87 1.00E-05 Kr-88 1.OOE-05 Xe-133 1.00E-05 Xe-133m 1.00E-05 Xe- 135 1.OOE-05 Xe- 138 1.OOE-05

2. IODINES gCi/ml 1-131 1.00E-06

3. PARTICULATES gCi/rnl Fe-55 1.00E-06 Sr-89 5.OOE-08 Sr-90 5.OOE-08 Mn-54 5.OOE-07 Fe-59 5.OOE-07 Co-58 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-07

4. OTHER gCi/mI H-3 1.OOE-05 Gross Alpha 1.00E-07 The above values are the ODCM-required LLDs. Actual analyses always met the required LLDs.

14

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through June 2000 DOCKET NUMBERS: 50-010/50-237/50-249 SUMMATION OF ALL LIQUID RELEASES Est. Total UNITS 1 Quarter 2 Quarter Error, %

A. FISSION & ACTIVATION PRODUCTS

1. Total Release (not including H-3, gases, alpha) Ci 7.67E-03 1.45E-02 10.6%

2. Average Diluted Conc. During Period RtCi/ml 6.06E-09 1.03E-08

3. Percent of Technical Specification Limit %*

B. TRITIUM

1. Total Release Ci 3.71E+01 3.48E+01 11.4%

2. Average Diluted Conc. During Release piCi/ml 2.93E-05 2.47E-05

3. Percent of Technical Specification Limit % *

C. DISSOLVED AND ENTRAINED GASES

1. Total Release Ci 5.28E-05 3.12E-05 5.58%

2. Average Diluted Conc. During Period [tCi/ml 4.17E-11 2.21E-11

3. Percent of Technical Specification Limit % *

D. GROSS ALPHA ACTIVITY

1. Total Release Ci 1.85E-01 <LLD 15.1%

E. VOLUME OF WASTE RELEASED (prior to dilution) Liters 6.36E+06 7.20E+06 -5.00%7, F. VOLUME OF DILUTION WATER USED Liters 1.26E+09 1.40E+09 5.00%

DURING PERIOD

The information is contained in the Radiological Impact on Man section of the report.

15

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT July Through December 2000 DOCKET NUMBERS: 50-010/50-237/50-249 SUMMATION OF ALL LIQUID RELEASES Est. Total UNITS 3 Quarter 4t Quarter Error, %

A. FISSION & ACTIVATION PRODUCTS

1. Total Release (not including H-3, gases, alpha) Ci 4.98E+00 4.58E-01 10.6%

2. Average Diluted Conc. During Period [tCi/m1 3.96E-06 6.97E-07

3. Percent of Technical Specification Limit %*

B. TRITIUM

1. Total Release Ci 6.15E+01 3.23E+01 11.4%

2. Average Diluted Conc. During Release [XCi/ml 4.90E-05 4.92E-05

3. Percent of Technical Specification Limit % *

C. DISSOLVED AND ENTRAINED GASES

1. Total Release Ci 2.98E-05 9.64E-05 5.58%

2. Average Diluted Conc. During Period liCi/ml 2.37E-11 1.47E-10

3. Percent of Technical Specification Limit % *

D. GROSS ALPHA ACTIVITY

1. Total Release Ci <LLD <LLD= - 15.1%

E. VOLUME OF WASTE RELEASED (prior to dilution) Liters 5.72E+06 7.59E+06 5.00%

F. VOLUME OF DILUTION WATER USED Liters DURING PERIOD Lits 1.25E-09 6.49E+08 5.00%

The information is contained in the Radiological Impact on Man section of the report.

16

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through June 2000 RADWASTE LIQUID EFFLUENTS DOCKET NUMBERS: 50-010/50-237/50-249

1. Number of Batch Releases: 5.10E+01

2. Total Time for Batch Releases: 1.76E+04 minutes

3. Maximum Time Period for a Batch Release: 4.77E+02 minutes

4. Average Time Period for a Batch Release: 3.45E+02 minutes

5. Minimum Time Period for a Batch Release: 1.27E+02 minutes

6. Average Stream Flow During Periods of Release of Effluent into a Flowing Stream: 1.51E+05 1pm BATCH MODE CONTINUOUS MODE ulnit 1st OTR 2nd OTR 1St OTR 2Qa OTR Fe-55 Ci 3.26E-03 7.90E-03 Sr-89 Ci *

Sr-90 Ci *

1-131 Ci *

1-132 Ci *

1-133 Ci *

1-134 Ci *

1-135 Ci *

Cr-51 Ci 3.28E-04 5.14E-05 Mn-54 Ci 1.26E-03 2.57E-03 Co-58 Ci *

Fe-59 Ci 4.08E-05

Co-60 Ci 2.22E-03 3.19E-03 Zn-65 Ci *

As-76 Ci *

Zr-95 Ci *

Mo-99 Ci *

Tc-99m Ci *

Ru-103 Ci *

Ag-110m Ci 1.11E-05 3.27E-05 Sb-124 Ci *

Cs-134 Ci *

Cs-137 Ci 3.10E-04 7.70E-04 Cs-138 Ci *

Ba-140 Ci *

La-140 Ci *

Ce-141 Ci * *

(above)

Total Ci 7.44E-03 1.45E-02 None None H-3 Ci 3.71E+01 3.47E+01 Kr-87 Ci *

Kr-88 Ci *

Xe-133 Ci 5.28E-05 3.13E-05 Xe-133m Ci *

Xe-135 Ci *

Xe-138 Ci * *

The activity of this nuclide is less than the LLD.

17

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT July Through December 2000 RADWASTE LIQUID EFFLUENTS DOCKET NUMBERS: 50-010/50-237/50-249

2. Number of Batch Releases: 3.70E+01

2. Total Time for Batch Releases: 1.25E+04 minutes

3. Maximum Time Period for a Batch Release: 4.08E+02 minutes

4. Average Time Period for a Batch Release: 3.39E+02 minutes

5. Minimum Time Period for a Batch Release: 6.OOE+00 minutes

6. Average Stream Flow During Periods of Release of Effluent into a Flowing Stream: 1.51E+05 1pm BATCH MODE CONTINUOUS MODE U~nit 3d OTR 4* OTR 3rd OTR 4QOTR Fe-55 Ci 7.22E-04 4.73E-03 Sr-89 Ci *

Sr-90 Ci *

Sr-91 Ci

5.30E-05 1-131 Ci 3.43E-06

1-132 Ci *

1-133 Ci *

1-134 Ci *

1-135 Ci *

Cr-51 Ci

1.54E-03 Mn-54 Ci 9.96E-04 1.35E-03 Co-58 Ci

2.15E-04 Fe-59 Ci

4.68E-04 Co-60 Ci 2.80E-03 1.22E-03 Zn-65 Ci

1.65E-03 As-76 Ci *

Zr-95 Ci *

Mo-99 Ci

1.30E-05 Tc-99m Ci

2.80E-05 Ru-103 Ci *

Ag-110m Ci

8.20E-05 Sb-124 Ci *

Cs-134 Ci *

Cs-137 Ci 5.25E-04 7.77E-05 Cs-138 Ci *

Ba-140 Ci *

La-140 Ci *

Ce-141 Ci

8.06E-05 (above)

Total Ci 5.05E-03 1. 15E-02 None None H-3 Ci 6.15E+01 3.23E+01 Kr-87 Ci *

Kr-88 Ci *

Xe-133 Ci 2.99E-05 8.07E-05 Xe-133m Ci *

Xe-135 Ci

1.58E-05 Xe-138 Ci * *

The activity of this nuclide is less than the LLD.

18

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through June 2000 CCSW LIQUID EFFLUENTS DOCKET NUMBERS: 50-237/50-249 I. Number of Batch Releases: 6.OOE+00

2. Total Time for Batch Releases: 7.74E+00minutes

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: 9.46E+04 1pm BATCH MODE CONTINUOUS MODE Unit Sst OTR 2d OTR I st OTR 2nd OTR 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-51 Ci *

Mn-54 Ci *

Co-58 Ci *

Fe-59 Ci *

Co-60 Ci *

Zn-65 Ci *

As-76 Ci *

Zr-95 Ci *

Mo-99 Ci *

Tc-99m Ci *

Ru-103 Ci *

Ag-110m Ci *

Sb- 124 Ci *

Cs-134 Ci *

Cs-137 Ci

3.07E-06 Cs-138 Ci *

Ba-140 Ci *

La-140 Ci *

Ce-141 Ci * *

(above)

Total Ci

3.07E-06 None None H-3 Ci *

Kr-87 Ci *

Kr-88 Ci *

Xe-133 Ci *

Xe-133m Ci *

Xe-135 Ci *

Xe-138 Ci * *

The activity of this nuclide is less than the LLD.

19

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT July Through December 2000 CCSW LIQUID EFFLUENTS DOCKET NUMBERS: 50-237/50-249

1. Number of Batch Releases: 4.80E+01

2. Total Time for Batch Releases: 5.95E+0lminutes

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: 9.46E+04 1pm BATCH MODE CONTINUOUS MODE Unit 3rd QTR 4th QTR 3' QTR 4th QTR Fe-55 Ci 9.76E-04

Sr-89 Ci *

Sr-90 Ci *

1-131 Ci *

1-132 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 *

Mo-99 Ci *

Tc-99m Ci *

Ru-103 Ci *

Ag-Ci *

Sb-124 Ci *

Cs-134 Ci *

Cs-137 Ci 8.35E-06 1.94E-06 Cs-138 Ci *

Ba-140 Ci *

La-140 Ci *

Ce-141 Ci * *

(above)

Total Ci 9.84E-04 1.94E-06 None None H-3 Ci *

Kr-87 Ci

Kr-88 Ci *

Xe-133 Ci *

Xe-133m Ci *

Xe-135 Ci *

Xe-138 Ci * *

The activity of this nuclide is less than the LLD.

20

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBERS: 50-010/50-237/50-249 UNITS 1, 2 & 3 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS A .'qOT In WA5RTP Ri--ITPPFI) OPFSITF,FOR RIJRIAT, OR DISPOSAL (NOT IRRADIATED FUEL)

1. Type of Waste Unit 12-month period Est. Total Error, %

a. Spent resins, filter sludges, evaporator bottoms, etc. 7 1.60E+02 Ci 1.02E+03

b. Dry compressible waste, contaminated equipment, etc. m 1.56E+03 +25%

Ci 1.59E+01

c. Irradiated components, control rods, etc. m 4.40E-01 Ci 2.79E+02

d. Other (describe) - Contaminated Soil mn 4.78E+02

______________________________________________ Ci 5.34E-03 _________ +/-25%

2. Estimate of Major Nuclide Composition (by type of waste)

a. Spent resins, filter sludges, evaporator bottoms, etc.

Percent % Curies Fe-55 73.2% 7.48E+02 Co-60 17.3% 1.77E+02 Mn-54 6.11% 6.24E+01 Cs-137 1.83% 1.87E+01 Ni-63 0.84% 8.60E+00

b. Dry compressible waste, contaminated equipment, etc.

Percent % Curies Fe-55 64.2% 1.02E+01 Co-60 18.6% 2.96E+00 Mn-54 11.8% 1.87E+00 Fe-59 1.55% 2.46E-01 Cr-51 1.26% 2.01E-01

c. Irradiated components, control rods, etc.

Percent % Curies Co-60 55.7% 1.55E+02 Sb-125 26.6% 7.41E+01 Fe-55 11.9% 3.32E+01 Ni-63 4.93% 1.37E+01 Mn-54 0.40% 1.12E+00 21

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBERS: 50-010/50-237/50-249 UNIT 1, 2 & 3 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS (Cont.)

2. Estimate of Major Nuclide Composition (by type of waste) - Continued

d. Other - Contaminated Soil Percent % Curies H-3 81.8% 4.37E-03 Cs-137 8.60% 4.59E-04 Fe-55 4.06% 2.17E-04 Ni-63 2.57% 1.37E-04 Co-60 2.28% 1.22E-04

3. Solid Waste Description NUMBER OF SHIPMENTS MODE OF TRANSPORTATION DESTINATION 10 Motor Freight (exclusive use only) CNS, Barnwell, SC 8 Motor Freight (exclusive use only) AERC, Oak Ridge, TN 49 Motor Freight (exclusive use only) GTS Duratek, Oak Ridge, TN 17 Motor Freight (exclusive use only) GTS Duratek, Kingston, TN 11 Motor Freight (exclusive use only) ATG, Oak Ridge, TN 6 Motor Freight (exclusive use only) ATG, Richland, WA 16 Motor Freight (exclusive use only) Studsvik, Erwin, TN B. IRRADIATED FUEL SHIPMENTS (Disposition)

NUMBER OF SHIPMENTS MODE OF TRANSPORTATION DESTINATION None 22

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBER: 50-010/50-237/50-249 ABNORMAL RELEASES*

A. LIQUID

1. Number of Releases: 5

2. Total Activity Releases: 5.69E+00 Ci B. GASEOUS

1. Number of Releases: 4

2. Total Activity Releases: 2.67E-04 Ci A.1 In June, 1994, elevated tritium levels were discovered in the on-site storm sewers. The highest storm drain concentration, 4.02E+03 pCi/l from the 1St quarter was used for all of 2000. The total activity released is based on an estimated typical discharge flow of 10 gallons per minute. An estimated 8.02E-02 Ci of H-3 may have been released into the environment.

Various storm sewer locations on-site are periodically analyzed for Tritium.

A.2 On March 9h , a packing leak was discovered on the 2/3-2342-500 valve (Condensate Storage Tank HPCI Return Line).

Based on visual inspections of the leak, a total volume of 10 gallons is estimated to have leaked from the packing. It is estimated that 2.39E-04 Ci of Co-60 may have been released to the environment.

A.3 Monthly service water grab samples are sent offsite for analyses of H-3, Fe-55, Sr-89/90 and gross alpha and are analyzed onsite for gamma-emitting radionuclides. Results from samples taken in January, July, September and December show gross alpha and/or Fe-55 activity above the LLD. Specifically, 5.42E+00 Ci of Fe-55 and 1.85E-01 Ci of gross alpha activity are assumed to have been released in service water during 2000.

A.4 On August 2 8th approximately one (1) gallon of water from the 1A Condensate Return Storage Tank (CST) was spilled in the area surrounding the tank. The water was discovered coming from a pump being used to process the contents of the tank. A sample from the tank contents was used to establish the radionuclide concentration of the spilled liquid:

Co-60 2.81E-07 gCi/cc Cs-137 8.24E-07 gCi/cc Based upon this analysis it is estimated that a total of 4.18E-09 Ci was discharged to the environment.

A.5. From December 22-3 1, approximately 150 gallons of water from the Heating Steam system leaked from the piping in the Units 2/3 Cribhouse. Isotopic analysis of leaked water confirmed the presence of Co-60 at 1.401E-07 pCi/cc. Based upon this analysis, it is estimated that a total of 7.96E-08 Ci was discharged to the environment.

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

23

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBER: 50-010/50-237/50-249 ABNORMAL RELEASES* (Continued)

B. 1 The Unit 1 Main Turbine Floor (MTF) is used as an area to work on contaminated equipment. The ventilation, which exhausts through the Unit 1 Main Chimney, 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 3.6E-05 Ci per year of Cs-137.

B.2 The Chemistry Hotlab ventilation exhausts directly into the environment without any monitoring. The calculated release to the environment is 1.59E-04 Ci of noble gases and 6.86E-06 Ci of iodines/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. The estimated activity released to the environment from this system during 2000 is as follows:

Am-241 5.30E-08 Ci Tc-99 3.86E-08 Ci Co-60 1.05E-06 Ci Mn-54 1.99E-07 Ci Cs-137 1.18E-07 Ci Sb-124 1.86E-08 Ci Mo-99 3.53E-08 Ci Zn-69m 1.11E-08 Ci B.4 From past radiological surveys it was identified that the East Turbine Building Ventilation was found to be contaminated.

This ventilation vents directly to the environment, therefore, a postulated release is calculated. The following activity is estimated to have been released via this pathway:

Mn-54 2.44E-06 Ci Co-60 4.53E-06 Ci Cs-137 2.54E-06 Ci Ba-139 5.43E-05 Ci

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

24

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBER: 50-010 RADIOLOGICAL IMPACT ON MAN*

UNIT 1

1. Airborne Releases Percentage of Quarterly Objective Yearly Obj. Percentage of Ouarterlv Obi. 1OTR 2 n OTR 3'r OTR 4'" OTR Yearly Obi.

Gamma Air 5.0 mrad 0.00 (e) 0.00 (e) 0.00 (e) 0.00 (e) 10.0 mrad 0.00 (e)

Beta Air 10.0 mrad 0.00 (e) 0.00 (e) 0.00 (e) 0.00 (e) 20.0 mrad 0.00 (e)

Total Body 2.5 mrem 0.00 (e) 0.00 (e) 0.00 (e) 0.00 (e) 5.0 mrem 0.00 (e)

Skin 7.5 mrem 0.00 (e) 0.00 (e) 0.00 (e) 0.00 (e) 15.0 mrem 0.00 (e)

Organ 7.5 mrem 0.00 (c) 0.00 (c) 0.00 (c) 0.01 (c) 15.0 mrem 0.01 (c)

Critical Organ Lung Liver Liver Bone Liver

2. Liquid Releases Percentage of Quarterly Objective Yearly Obj. Percentage of Quarterly Obi. 1st QTR 2nd QTR 3rd QTR 4' QTR Yearly Obj.

Total Body 1.5 mrem None None None None 3.0 mrem None Organ 5.0 mrem None None None None 10.0 mrem None I Critical Organ I None I None I None I None None

The doses reported include abnormal 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].

25

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBER: 50-237 RADIOLOGICAL IMPACT ON MAN*

UNIT 2

1. Airborne Releases T r Percetmtare of Ouarterlv Objective Yearly Obj. Percentage of Percentaqe of Ouarterlv Obiective Yearly Obj.

Ouarterlv Obi. 1s OTR 2 n OTR 3- OTR 4"' QTR Gamma Air 5.0 mrad 0.00 (e) 0.00 (e) 0.00 (e) 0.00 (e) 10.0 mrad 0.01 (e)

Beta Air 10.0 mrad 0.00 (e) 0.00 (e) 0.00 (e) 0.00 (e) 20.0 mrad 0.00 (e)

Total Body 2.5 mrem 0.00 (e) 0.00 (e) 0.01 (e) 0.00 (e) 5.0 mrem 0.01 (e)

Skin 7.5 mrem 0.00 (e) 0.00 (e) 0.00 (e) 0.00 (e) 15.0 mrem 0.00 (e)

Organ 7.5 mrem 0.01 (c,t) 0.00 (c) 0.01 (c) 0.01 (c) 15.0 mrem 0.01 (c)

Critical Organ Lung Thyroid Thyroid Thyroid Thyr oid

2. Liquid Releases Percentage of Quarterly Objective Yearly Obj. Percentage of Quarterly Obj. 1st QTR 2 nd QTR 3 rd QTR 4t QTR Yearly Obj.

Total Body 1.5 mrem 0.01 (a) 0.01 (a) 0.03 (c) 0.01 (c) 3.0 mrem 0.03 (c)

Organ 5.0 mrem 0.00 (c) 0.01 (c) 0.03 (c) 0.00 (c) 10.0 mrem 0.02 (c)

Critical Organ Liver Liver Bone Liver Bone The doses reported include abnormal 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].

26

DRESDEN NUCLEAR POWER STATION UNITS 1, 2 AND 3 RADIOACTIVE EFFLUENT RELEASE REPORT January Through December 2000 DOCKET NUMBER: 50-249 RADIOLOGICAL IMPACT ON MAN*

UNIT 3

1. Airborne Releases Percentage of Quarterly Objective Yearly Obj. Percentage of Quarterly Obi. 1st QTR 2na QTR 3rd QTR 4t" QTR Yearly Obi.

Gamma Air 5.0 mrad 0.01 (e) 0.01 (e) 0.01 (e) 0.01 (e) 10.0 mrad 0.02 (e)

Beta Air 10.0 mrad 0.00 (e) 0.00 (e) 0.00 (e) 0.00 (e) 20.0 mrad 0.00 (e)

Total Body 2.5 mrem 0.02 (e) 0.02 (e) 0.02 (e) 0.01 (e) 5.0 mrem 0.03 (e)

Skin 7.5 mrem 0.01 (e) 0.01 (e) 0.01 (e) 0.00 (e) 15.0 mrem 0.01 (e)

Organ 7.5 mrem 0.03 (c) 0.09 (c) 0.12 (c) 0.07 (c) 15.0 mrem 0.15 (c)

Critical Organ Thyroid Thyroid Thyroid Thyroid Thyroid

2. Liquid Releases Percentage of Quarterly Objective Yearly Obj. Percentage of Quarterly Obj. 1st QTR 2n QTR 3r QTR 4' QTR Yearly Obj.

Total Body 1.5 mrem 0.01 (a) 0.01 (a) 0.06 (c) 0.01 (c) 3.0 mrem 0.05 (c)

Or an 5.0 mrem 0.00 (c) 0.01 (c) 0.09 (c) 0.01 (c) 10.0 mrem 0.05 (c)

I Critical Organ Liver Liver Bone Bone Bone

The doses reported include abnormal 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].

27

ComEd DRESDEN STATION January-March 2000 35 ft. WINDSPEED and WINDDIRECTION 150-35 ft. DIFFERENTIAL TEMPERATURE NUMBER OF OBSERVATIONS = 2174 VALUES AREPERCENT OCCURRENCE SPEED .................................. WINDDIRECTION CLASSES .................................. STABILITY CLASSES ..........

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 MU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C SU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 A N .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 L SS .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 N MS .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .05 .05 ES .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 .05 MU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1 SU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.N .09 .05 .00 .00 .09 .09 .00 .14 .00 .05 .00 .14 .05 .00 .05 .09 .83 .83 3 SS .41 .37 .05 .28 .09 .23 .18 .32 .18 .14 .41 .23 .18 .14 .28 .28 3.77 3.77 MS .32 .18 .05 .05 .05 .18 .14 .14 .14 .32 .41 .28 .37 .28 .41 .23 3.54 3.54 ES .05 .05 .00 .00 .05 .05 .00 .18 .09 .14 .14 .14 .28 .23 .37 .14 1.89 1.89 EU .09 .05 .28 .00 .00 .05 .00 .00 .00 .05 .00 .05 .05 .09 .14 .18 1.01 1.01 MU .09 .05 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 .09 .32 .32 4 SU .14 .09 .09 .00 .00 .00 .00 .00 .00 .00 .09 .05 .05 .00 .00 .09 .60 .60

.N .41 .51 .60 .51 .87 .64 .23 .51 .92 .23 .23 .41 .32 .37 .37 .32 7.45 7.45 7 SS .60 .51 .46 .87 1.66 .60 .37 1.15 1.79 1.33 .46 .14 1.56 .60 1.06 1.10 14.26 14.26 MS .00 .00 .37 .23 .14 .32 .18 .09 .37 .92 1.01 .18 1.20 1.33 .46 .32 7.13 7.13 ES .00 .00 .00 .05 .09 .46 .00 .00 .14 .37 .74 .18 .00 .23 .14 .09 2.48 2.48 EU .28 .28 .05 .09 .05 .14 .09 .00 .00 .00 .05 .05 .05 .32 .28 .23 1.93 1.93 MU .00 .18 .00 .05 .00 .00 .14 .00 .00 .00 .05 .23 .05 .09 .00 .14 .92 .92 8 SU .00 .00 .00 .05 .09 .14 .05 .00 .09 .09 .05 .14 .09 .09 .00 .14 1.01 1.01

-N .46 .60 .55 .64 1.24 1.01 .46 .32 .87 .46 .41 .64 .87 1.33 .92 .92 11.73 11.73 1 SS .46 .64 .97 .55 .97 .97 .37 1.70 2.81 1.43 1.06 .74 2.39 1.47 1.56 .97 19.04 19.04 2 MS .00 .09 .05 .09 .23 .23 .00 .00 .05 .18 .18 .05 .00 .00 .00 .00 1.15 1.15 ES .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00 .18 .14 .00 .00 .00 .00 .00 .00 .00 .09 .05 .41 .78 .23 .14 2.02 2.02 1 MU .00 .00 .00 .00 .05 .00 .00 .00 .05 .05 .14 .14 .09 .14 .05 .09 .78 .78 3 SU .00 .05 .00 .00 .00 .05 .00 .00 .05 .14 .23 .05 .09 .09 .09 .05 .87 .87

.N .00 .09 .00 .00 .37 .55 .09 .87 .83 .92 .32 .37 .74 1.15 .46 .74 7.50 7.50 ESS .00 .18 .18 .00 .00 .05 .09 1.01 1.43 .74 .37 .74 .55 .37 .37 .32 6.39 6.39 8 MS .00 .00 .05 .00 .00 .00 .00 .05 .05 .00 .05 .00 .00 .00 .00 .00 .18 .18 ES .00 .00 .05 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05

ComEd DRESDEN STATION January-March 2000 35 ft. WINDSPEED and WINDDIRECTION 150-35 ft. DIFFERENTIAL TEMPERATURE SPEED .................................. WINDDIRECTION CLASSES ................................... STABILITY CLASSES ---------

E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES CLASS N NNE NE ENE EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .05 .05

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .09 .00 .00 .00 .00 .09 .09 1 MU .00

.00 .00 .00 .00 .00 .00 .00 .00 .09 .00 .00 .00 .00 .00 .00 .00 .09 .09 9 SU N .00 .00 .00 .00 .00 .00 .00 .28 .51 .14 .09 .05 .37 .05 .00 .00 1.47 1.47

.00 .00 .00 .00 .00 .46 .32 .14 .00 .05 .05 .00 .00 .00 1.01 1.01 2 SS .00 .00

.00 .00 .00 .00 .00 .00 .05 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 4 MS .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 G MU .00 .00

.00 .00 .00 .O0 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 T SU .00 .00

.00 .00 .00 .00 .00 .00 .09 .05 .00 .00 .00 .00 .00 .00 .14 .14 N .00 .00 2 SS .00 .00 .00 .00 .00 .00 .00 .00 .14 .00 .00 .00 .00 .00 .00 .00 .14 .14

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 4 MS .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 TOT 3.40 4.14 3.91 3.45 6.03 5.75 2.39 7.27 10.99 7.87 6.58 5.15 9.80 9.25 7.31 6.72 100.00 5.06 2.12 2.58 29.12 44.62 12.10 4.42 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES

.00 .00 .05 .14 .14 .51 1.24 .64 .60 5.06 Extremely Unstable

.37 .51 .46 .09 .05 .18 .09

.28 .09 .32 2.12 Moderately Unstable

.09 .23 .00 .05 .05 .00 .14 .00 .05 .05 .18 .46 .14

.18 .09 .28 2.58 Slightly Unstable

.14 .14 .09 .05 .09 .18 .05 .00 .23 .23 .37 .23 .23 3.22 1.84 1.06 1.61 2.35 2.90 1.79 2.07 29.12 Neutral

.97 1.24 1.15 1.15 2.58 2.30 .78 2.12 4.74 2.58 3.27 2.67 44.62 Slightly Stable 1.47 1.70 1.66 1.70 2.71 1.84 1.01 4.65 6.67 3.77 2.30 1.89

.60 1.43 1.66 .51 1.56 1.61 .92 .55 12.10 Moderately Stable

.32 .28 .51 .37 .41 .74 .32 .32

.87 .32 .28 .46 .51 .23 4.42 Extremely Stable

.05 .05 .05 .05 .14 .51 .00 .18 .23 .51 Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WINDSPEED CLASSES

.00 .05 CALM

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05

.64 1.10 .78 10.07 1.0 - 3.5 mph

.87 .64 .09 .32 .28 .55 .32 .78 .41 .64 .97 .78 .87 1.01 3.17 2.67 2.21 2.21 33.26 3.6 - 7.5 mph 1.33 1.20 1.79 1.66 2.76 2.07 .78 1.75 3.22 2.90 2.53 2.76 2.39 35.79 7.6 - 12.5 mph 1.20 1.79 1.61 1.47 2.58 2.48 1.10 2.02 3.82 2.16 1.79 1.84 3.45 3.31 1.20 1.33 1.89 2.53 1.20 1.33 17.80 12.6 - 18.5 mph

.00 .51 .41 .00 .41 .64 .18 1.93 2.39 1.84

.41 .09 .00 .00 2.76 18.6 - 24.5 mph

.00 .00 .00 .00 .00 .00 .00 .78 .92 .28 .09 .18

.00 .00 .23 .05 .00 .00 .00 .00 .00 .00 .28 > 24.5 mph

.00 .00 .00 .00 .00 .00

ComEd DRESDEN STATION April-June 2000 35 ft. WINDSPEED and WINDDIRECTION 150-35 ft. DIFFERENTIAL TEMPERATURE NUMBER OF OBSERVATIONS = 2181 VALUES ARE PERCENT OCCURRENCE

......... STABILITY CLASSES ..........

SPEED .................................. WIND DIRECTION CLASSES ..................................

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 MU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C SU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 A N .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 L SS .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 M MS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 EU .00 .00 .00 .00 .05 .00 .05

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 MU .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .05 .00 .00 .00 .00 .00 .05 .05 1 SU .00 .00 .00 .00 .00 .00

.05 .09 .14 .18 .05 .18 .23 .09 .09 2.25 2.25

.N .14 .23 .14 .14 .09 .09 .32

.09 .09 .55 .18 .28 .32 .18 .23 .14 .41 .60 4.81 4.81 3 SS .55 .18 .32 .37 .32

.37 .46 .09 .05 .23 .14 .55 .41 .78 .46 4.59 MS .05 .05 .14 .23 .14 .46 4.59

.14 .23 .09 .37 .37 .05 .18 .09 .18 .23 2.52 2.52 ES .05 .09 .00 .00 .18 .28

.05 .00 .00 .00 .00 .46 1.79 1.79 EU .18 .41 .60 .09 .00 .00 .00 .00 .00 .00

.00 .00 .00 .05 .00 .00 .00 .00 .05 .09 .92 MU .05 .28 .14 .14 .14 .00 .92

.09 .00 .00 .00 .00 .05 .00 .09 .09 .05 .28 .83 .83 4 SU .00 .05 .00 .05 .09

.41 1.01 .78 .64 1.05 1.05 .55 .41 .78 11.14 11.14

.N .37 .60 .64 .73 1.01 .55 .55 1.83 1.28 .83 18.39 18.39 7 SS .92 .60 2.06 1.60 1.65 1.05 .60 1.83 .37 .64 1.05 1.01 1.05

.50 .41 .50 .78 .78 .14 .46 .37 .18 .18 5.87 MS .14 .14 .37 .00 .32 .60 5.87

.05 .05 .00 .14 .50 .00 .00 .05 .05 .09 1.24 ES .05 .00 .05 .00 .05 .18

.00 .00 .00 .09 .14 .23 .09 .55 .09 .28 2.52 2.52 EU .00 .37 .50 .18 .00 .00

.05 .05 .00 .00 .14 .05 .09 .05 .05 .00 .60 MU .05 .05 .00 .05 .00 .00 .60

.09 .09 .00 .00 .00 .14 .09 .23 .05 .14 1.05 8 SU .00 .05 .05 .09 .05 .00 1.05

.41 10.32

.N .28 .83 .64 .55 .55 .28 .46 .83 .73 1.24 1.28 .69 .55 .50 .50 10.32

.18 14.26 14.26 1 SS .69 .55 .73 .50 .32 .96 .41 1.51 2.38 2.11 1.51 .50 .46 .64 .78

.00 .14 .50 .32 .05 .05 .00 .05 .00 1.28 1.28 2MS .00 .00 .05 .05 .00 .09 .00

.00 .00 .00 .00 .00 .00 .05 ES .00 .00 .00 .00 .00 .00 .00 .00 .00 .05

.05 .14 .18 .09 .18 .41 .37 .18 2.02 2.02 EU .00 .00 .32 .05 .00 .00 .00 .05

.00 .09 .09 .18 .05 .05 .14 .09 .69 .69 I MU .00 .00 .00 .00 .00 .00 .00 .00

.23 .09 .09 .14 .09 .05 .00 .92 .92 3 SU .09 .00 .00 .00 .00 .00 .00 .09 .05

.05 .50 .87 1.10 .64 .28 .18 .87 .28 .18 5.18

-N .14 .09 .00 .00 .00 .00 5.18

.18 .46 .18 .14 .60 5.50 1 SS .28 .05 .14 .00 .05 .50 .05 .23 1.05 1.05 .55 5.50

.00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 8 MS .00 .00 .00 .00 .05 .00 .00

.00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

ComEd DRESDEN STATION April-June 2000 150-35 ft. DIFFERENTIAL TEMPERATURE 35 ft. WINDSPEED and WINDDIRECTION

......... STABILITY CLASSES ..........

SPEED .................................. WINDDIRECTION CLASSES ..................................

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .05 .05 EU .00

.00 .00 .00 .05 .00 .00 .00 .00 .00 .05 .05 1 MU .00 .00 .00 .00 .00 .00 .00

.05 .00 .00 .00 .00 .00 .05 .05

.00 .00 .00 .00 .00 .00 .00 .00 .00 9 SU .00

.18 .09 .00 .00 .00 .00 .00 .50 N .00 .00 .00 .00 .00 .00 .00 .05 .18 .50

.09 .05 .00 .00 .00 .00 .00 .32 .32

.00 .00 .00 .00 .09 .05 .00 .05 2 SS .00

.00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 4 MS .00

.00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00

.00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00

.00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 GNU .00

.00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 T SU .00

.00 .00 .00 .00 .00 .00 .14

.00 .00 .00 .00 .00 .00 .09 .05 .00 .14 N .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 2 SS .00

.00 .00 .00 .00 .00 .05 .05

.00 .00 .00 .00 .00 .00 .00 .00 .05 .00 4 MS .00

.00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 5.04 5.36 3.76 7.47 9.35 10.77 8.67 4.72 6.14 6.56 5.73 6.14 100.00 6.42 2.25 2.89 29.53 43.28 11.83 3.81 TOT 3.99 4.59 6.88 4.81 Wind Direction by Stability S SSW SW WSW W WNW NW NNW TOTAL .STABILITY CLASSES N NNE NE ENE E ESE SE SSE Extremely Unstable

.78 1.42 .32 .05 .05 .00 .05 .05 .23 .32 .32 .28 1.01 .46 .92 6.42

.18 Moderately Unstable

.32 .14 .18 .14 .00 .05 .05 .00 .14 .28 .23 .14 .09 .23 .18 2.25

.09 Slightly Unstable

.09 .09 .05 .14 .14 .09 .09 .18 .05 .23 .23 .23 .32 .41 .14 .41 2.89 Neutral

.92 1.74 1.42 1.42 1.65 .92 1.38 1.93 2.93 3.44 2.84 2.06 1.97 2.15 1.28 1.47 29.53 Slightly Stable 2.43 1.38 3.26 2.48 2.34 2.71 1.19 4.13 5.50 4.81 2.80 1.51 2.20 1.97 2.38 2.20 43.28 Moderately Stable

.18 .55 .28 .50 1.15 .87 .87 .73 1.38 1.33 .32 1.05 .78 1.01 .64 11.83

.18 Extremely Stable

.09 .05 .00 .23 .46 .18 .28 .09 .55 .87 .05 .18 .14 .23 .32 3.81

.09 Wind Direction by Wind Speed SE SSE S SSW SW WSW W WNW NW NNWTOTAL -WINDSPEED CLASSES N NNE NE ENE E ESE CALM

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 1.0 3.5 mph

.60 .73 .78 .92 .92 1.28 .46 .83 1.15 .41 1.15 .87 1.47 1.38 14.26

.78 .55 3.6 - 7.5 mph 2.61 3.26 2.52 1.70 2.71 3.35 3.03 2.34 1.83 2.66 2.06 1.79 2.71 40.17 1.70 2.06 3.85 7.6 12.5 mph 1.83 1.97 1.42 .92 1.33 1.01 2.48 3.26 3.99 3.39 1.65 1.33 1.97 1.51 1.01 30.08 1.01 12.6 - 18.5 mph

.50 .14 .46 .05 .09 .50 .09 .87 2.02 2.61 1.56 .83 1.01 1.60 .96 1.05 14.35 18.6 - 24.5 mph

.00 .00 .00 .00 .09 .05 .05 .23 .28 .23 .00 .00 .05 .00 .00 .96

.00 > 24.5 mph

.00 .00 .00 .00 .00 .00 .09 .05 .05 .00 .00 .00 .00 .00 .00 .18

.00

ComEd DRESDEN STATION July-September 2000 150-35 ft. DIFFERENTIAL TEMPERATURE 35 ft. WIND SPEED and WINDDIRECTION NUMBER OF OBSERVATIONS = 2208 VALUES AREPERCENT OCCURRENCE WIND DIRECTION CLASSES -- ......... STABILITY CLASSES .........

SPEED .................................. EU MU SU N SS MS E' ESE SE SSE S SSW SW WSW W WNW NW NNWTOTAL CLASS N NNE NE ENE E

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 MU .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C SU .00

.00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 A N .00 .00

.00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 L SS

.00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 MMS .00

.00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 EU .00 .05 .00 .00 .00

.00 .00 .00 .00 .14 .14

.00 .00 .00 .00 .00 .05 .05 .00 .00 .00 MU .05 .00

.00 .00 .00 .00 .09

.00 .05 .00 .00 .00 .05 .00 .00 .00 .00 .09 I SU .00 .00

.09 .00 .23 .27 1.86 N .36 .18 .14 .14 .00 .05 .00 .00 .05 .14 .14 .09 1.86

.32 .27 .50 .95 7.07

.32 .32 .27 .27 .27 .41 .23 .36 .41 .41 7.07 3 SS 1.09 .68

.41 .59 .95 1.18 6.93

.23 .23 .27 .27 .14 .45 .32 .36 .41 .14 6.93 MS .68 .32

.05 .27 1.09 .41 3.26

.00 .05 .00 .09 .23 .09 .05 .41 .32 .09 3.26 ES .14 .00

.23 .27 .36 .18 .09 .00 .32 .41 .18 .45 1.04 7.43 7.43 EU .86 .86 1.13 .54 .50

.00 .14 .05 .41 .18 1.72

.27 .14 .14 .05 .05 .00 .09 .09 .05 1.72 MU .05 .05

.00 .14 .05 .05 .23 .27 2.26

.14 .14 .00 .14 .23 .14 2.26 4 SU .23 .23 .18 .14 10.60

.54 .41 .91 .86 .86 10.60 N .82 .77 .95 .82 .91 .18 .41 .54 .91 .50 .23

.68 .77 .68 23.87 23.87 7 SS .91 1.27 3.08 1.95 2.17 1.00 1.04 2.85 2.54 1.86 .82 .68 1.59

.23 .50 .41 5.43 MS .27 .05 .00 .00 .18 .68 .50 .63 .27 .86 .63 .05 .18 5.43

.00 .00 .00 1.09

.00 .00 .14 .05 .00 .09 .14 .54 .09 .00 1.09 ES .00 .00 .05

.32 .09 5.48 5.48 EU .23 .18 .45 .23 .23 .45 .27 .36 .27 1.00 .32 .68 .14 .27

.00 .00 .00 1.27 1.27

.05 .05 .05 .00 .05 .05 .09 .36 .27 .09 .18 .05 MU .00

.05 .05 .00 1.59

.00 .05 .14 .05 .05 .05 .18 .14 .18 .23 .14 .23 .09 1.59 8 SU

.14 .18 .09 7.74 N .05 .18 .59 .09 .41 .27 .63 .68 1.13 1.18 .72 .86 .54 7.74

.09 .14 .00 8.88

.05 .72 .09 .77 .82 .72 1.09 2.54 .82 .45 .23 .36 8.88 1SS .00

.05 .00 .00 .77 .77

.00 .00 .00 .00 .09 .14 .14 .23 .09 .00 .05 .00 2 MS .00 .00

.00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES

.00 .00 .00 .59 .59 EU .00 .00 .00 .00 .00 .00 .05 .00 .18 .23 .14 .00 .00

.00 .00 .00 .23

.00 .00 .00 .00 .00 .00 .00 .09 .09 .05 .00 .00 .23 1MU .00

.00 .00 .00 .18

.00 .00 .00 .00 .00 .00 .00 .00 .09 .09 .00 .00 .18 3 SU .00

.00 .00 .05 .86 N .00 .00 .00 .00 .00 .14 .14 .14 .27 .14 .00 .00 .86

.00

.00 .00 .00 .59 .59

.00 .00 .00 .00 .09 .23 .05 .05 .18 .00 .00 .00 1SS .00

.00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 8 MS .00

.00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00

ComEd DRESDEN STATION July-September 2000 150-35 ft. DIFFERENTIAL TEMPERATURE 35 ft. WINDSPEED and WINDDIRECTION

...... ..... ........... STABILITY CLASSES ---------

SPEED ----------------------------------WINDDIRECTION CLASSES CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS E!

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1MU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 9 SU .00 .00 .00 .00 .00 .00

.00 .05 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 N .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2 SS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 4 MS .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .0D .00 .00 .00 .00 G MU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 T SU .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 N .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2 SS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 4 MS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 .00 .00 TOT 5.71 4.94 8.29 4.85 6.02 4.89 5.34 8.29 10.14 9.38 5.66 4.76 4.98 3.62 6.48 6.66 100.00 13.54 3.35 4.12 21.11 40.40 13.13 4.35 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWTOTAL -STABILITY CLASSES Extremely Unstable 1.09 1.09 1.59 .77 .72 .68 .59 .72 .63 1.31 .45 1.00 .72 .27 .59 1.31 13.54 Moderately Unstable

.09 .09 .32 .18 .14 .09 .09 .14 .59 .45 .18 .18 .18 .05 .41 .18 3.35 Slightly Unstable

.23 .27 .32 .23 .18 .18 .18 .32 .41 .45 .23 .36 .14 .09 .27 .27 4.12 Neutral 1.22 1.13 1.68 1.04 1.31 .50 1.18 1.40 2.22 2.08 1.22 1.49 1.04 1.04 1.27 1.27 21.11 Slightly Stable 1.99 1.99 4.12 2.36 3.22 2.17 2.26 4.39 5.34 3.22 1.68 1.31 2.26 1.04 1.40 1.63 40.40 Moderately Stable

.95 .36 .23 .23 .45 1.04 .77 1.22 .82 1.31 1.04 .23 .59 .86 1.45 1.59 13.13 Extremely Stable

.14 .00 .05 .05 .00 .23 .27 .09 .14 .54 .86 .18 .05 .27 1.09 .41 4.35 Wind Direction by Wind Speed ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WINDSPEED CLASSES N NNE NE ENE E CALM

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1.0 3.5 mph 2.31 1.22 .68 .77 .54 .68 .63 1.04 .68 1.27 1.27 .72 .86 1.13 2.76 2.81 19.38 3.6 - 7.5 mph 3.13 3.22 5.66 3.58 4.03 2.40 2.31 4.53 4.30 3.67 2.26 1.81 2.76 2.08 3.22 3.44 52.40 7.6 - 12.5 mph

.27 .50 1.95 .50 1.45 1.72 1.99 2.49 4.71 3.58 1.72 2.22 1.36 .41 .50 .36 25.72 12.6 - 18.5 mph

.00 .00 .00 .00 .00 .09 .41 .18 .45 .86 .41 .00 .00 .00 .00 .05 2.45 18.6 - 24.5 mph

.00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .00 .00 .00 .00 .00 .00 .05 24.5 mph

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

ComEd DRESDEN STATION October-December 2000 35 ft. WINDSPEED and WINDDIRECTION 150-35 ft. DIFFERENTIAL TEMPERATURE NUMBER OF OBSERVATIONS = 2208 VALUES AREPERCENT OCCURRENCE SPEED .................................. WIND DIRECTION CLASSES STABILITY CLASSES --------

EU MU SU N SS MS E!

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 MU .00 .00 .05 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C SU .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .23 .23 A N .09 .09

.00 .09 .00 .00 .00 .00 .00 .00 .00 .00 .23 .18 .00 .54 L SS .00 .00 .05

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 M MS .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 . oc ES .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .00 .14 .00 .18 .18 EU .00 .00

.05 .14 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 .00 .27 .27 MU .00

.00 .05 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 1 SU .00 .00 .00

.14 .00 .23 .05 .00 .09 .14 .09 .14 .00 .23 .32 .18 .27 2.17 2.17

-N .18 .14

.23 .14 .18 .27 .32 .46 .46 .23 .32 .14 .55 1.05 .55 .27 5.98 5.98 3 SS .37 .46

.18 .14 .18 .14 .23 .54 .63 .36 .54 .05 .32 .32 .41 .45 4.76 4.76 MS .23 .05

.05 .00 .09 .14 .14 .23 .45 .59 .32 .23 .54 .27 .05 3.17 3.17 ES .05 .00 .05 EU .14 .14 .05 .05 .05 .00 .00 .05 .18 .00 .18 .23 .05 .00 .27 .14 1.49 1.49

.00 .00 .00 .00 .14 .00 .00 .00 .00 .05 .09 .05 .00 .32 .32 MU .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .14 .05 .05 .09 .05 .23 .14 .00 .09 .82 .82 4 SU

-N .50 .50 .63 .45 .32 .50 1.49 1.77 .77 .63 11.87 11.87

.32 .45 .50 1.18 1.31 .54 1.40 .68 1.72 1.00 .50 1.00 1.09 1.04 .91 .59 1.22 1.49 1.09 .72 16.17 16.17 7 SS .86 .86

.00 .05 .00 .14 .50 .18 .18 .82 1.04 1.45 .41 .54 .59 .05 .18 6.16 6.16 MS .05

.00 .00 .00 .00 .00 .00 .09 .09 .23 .27 .14 .00 .05 .05 .00 .91 .91 ES .00

.00 .14 .00 .00 .27 .14 .14 .05 .00 .05 .59 .41 .72 .54 .23 3.26 3.26 EU .00

.00 .09 .05 .00 .00 .00 .14 .00 .00 .05 .14 .09 .00 .05 .09 .77 .77 MU .09

.00 .18 .00 .00 .00 .09 .05 .05 .05 .09 .18 .18 .09 .14 .00 1.09 1.09 8 SU .00

.N .41 .95 .32 .59 .63 .32 .86 .45 .45 .72 1.04 2.76 2.36 .82 .59 13.95 13.95

.68 1.45 .68 1.45 .86 .59 .41 1.90 1.40 .63 .72 12.64 12.64 1 SS .09 .23 .41 .00 .50 1.31

.00 .00 .00 .00 .00 .00 .14 .00 .00 .00 .00 .00 .00 .14 .14 2 MS .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00

.05 .00 .14 .00 .05 .27 .00 .09 .00 .09 .00 .68 .68 EU .00 .00 .00 .00 .00

.00 .00 .00 .05 .00 .18 .09 .05 .00 .00 .00 .00 .36 .36 1 MU .00 .00 .00 .00

.05 .00 .00 .00 .09 .23 .00 .18 .00 .00 .00 .54 .54 3 SU .00 .00 .00 .00 .00

.N .14 .36 .36 .59 .45 .72 2.58 1.09 .41 .41 7.34 7.34

.00 .00 .00 .00 .00 .23

.00 .00 .18 .41 .27 .72 .18 .14 .09 .23 .14 .05 .14 2.72 2.72 1 SS .00 .05 .14

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 8 MS .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 .00 .00 .00 .00

ComEd DRESDEN STATION October-December 2000 35 ft. WINDSPEED and WINDDIRECTION 150-35 ft. DIFFERENTIAL TEMPERATURE SPEED .................................. WINDDIRECTION CLASSES ---------------------------------- STABILITY CLASSES .........

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWTOTAL EU MU SU N SS MS E!

EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .00 .00 .00 .05 .05

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1 MU .00 .00 .00 .00 .00

.00 .00 .00 .00 .05 .00 .00 .00 .00 .00 .00 .05 .05 9 SU .00 .00 .00 .00 .00

.36 .00 .00 .00 .09 .00 .18 .41 .09 .00 .14 1.27 N .00 .00 .00 .00 .00 1.27

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2 SS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 4 MS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 G MU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 T SU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .05 .00 .00 .00 .00 .05 .05 N .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2 SS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 4 MS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 .00 TOT 3.13 2.90 4.71 2.58 5.03 5.66 4.40 5.98 7.39 6.66 7.57 5.84 13.73 12.51 6.80 5.12 100.00 5.66 1.77 2.54 36.87 38.04 11.05 4.08 Wind Direction by Stability NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWTOTAL -STABILITY CLASSES N

Extremely Unstable

.14 .14 .18 .05 .05 .32 .14 .32 .23 .05 .59 .82 .54 .72 1.04 .36 5.66 Moderately Unstable

.09 .05 .27 .05 .00 .00 .00 .32 .00 .18 .14 .18 .14 .14 .14 .09 1.77 Slightly Unstable

.00 .00 .18 .00 .05 .05 .09 .18 .09 .23 .41 .23 .59 .23 .14 .09 2.54 Neutral 1.27 1.09 1.59 1.49 2.13 1.81 .95 1.81 1.59 1.68 1.63 2.49 7.47 5.62 2.22 2.04 36.87 Slightly Stable 1.32 1.59 2.22 .82 2.49 2.76 2.67 2.40 3.72 2.31 1.95 1.22 3.90 4.31 2.50 1.86 38.04 Moderately Stable

.27 .05 .23 .14 .32 .63 .41 .72 1.45 1.54 1.99 .45 .86 .91 .45 .63 11.05 Extremely Stable

.05 .00 .05 .05 .00 .09 .14 .23 .32 .68 .86 .45 .23 .59 .32 .05 4.08 Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWTOTAL -WINDSPEED CLASSES CALM

.09 .09 .09 .00 .09 .00 .00 .00 .00 .00 .00 .00 .00 .23 .23 .00 .82 1.0 3.5 mph

.82 .68 .73 .32 .64 .55 .68 1.23 1.45 1.13 1.63 .50 1.32 2.27 1.59 1.04 16.58 3.6 - 7.5 mph 1.36 1.45 1.99 1.90 3.22 2.04 1.18 2.00 2.85 2.81 3.22 1.90 3.58 4.12 2.26 1.77 37.73 7.6 - 12.5 mph

.86 .63 1.77 .36 1.09 2.22 1.99 1.86 1.99 1.49 1.49 2.36 5.34 4.57 2.17 1.63 31.84 12.6 - 18.5 mph

.00 .05 .14 .00 .00 .50 .54 .82 1.09 1.09 1.18 .86 3.08 1.22 .54 .54 11.64 18.6 - 24.5 mph

.00 .00 .00 .00 .00 .36 .00 .00 .00 .14 .05 .18 .41 .09 .00 .14 1.36

> 24.5 mph

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .00 .00 .05

ComEd DRESDEN STATION January-March 2000 300-35 ft. DIFFERENTIAL TEMPERATURE 300 ft. WINDSPEED and WINDDIRECTION NUMBER OF OBSERVATIONS = 2170 VALUES ARE PERCENT OCCURRENCE

......... STABILITY CLASSES ..........

SPEED .................................. WINDDIRECTION CLASSES ..................................

EU MU SU N SS MS ES CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL

.00 .00 EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 MU .00 .00

.00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 C SU .00 .00

.00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 A N .00 .00

.00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 L SS .00 .00

.00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 M MS .00 .00 .00

.00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00

.00 .00 .00 .00 .00 .O .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 EU

.00 .00 .00 .00 .00 .00 .00 .00 .05 .05

.00 .00 .00 .00 .00 .00 .00 MU .05

.00 .00 .00 .00 .00 .00 .00 .00 .00 1 SU .00 .00 .00 .00 .00 .00 .00 .00 .00

.05 .00 .00 .05 .00 .00 .00 .51

.N .05 .05 .00 .00 .05 .09 .14 .05 .00 .51

.00 .05 .00 .05 .05 .00 .14 .00 .00 .55 .55 3 SS .05 .00 .05 .05 .09 .00 .05

.09 .09 .09 .00 .05 .05 .00 .18 .97 .97

.05 .05 .05 .00 .09 .14 HS .05 .00

.05 .14 .05 .00 .00 .00 .05 .00 .32

.00 .00 .00 .00 .00 .00 .05 .00 .32 ES

.00 .00 .00 .00 .00 .00 .00 .00 .05 .05

.05 .00 .00 .00 .00 .00 .00 .00 EU

.00 .00 .00 .00 .05 .05 .05 .00 .23 .23

.05 .00 .00 .00 .00 .00 MU .05 .00

.00 .05 .05 .00 .09 .00 .00 .00 .37 .37

.09 .05 .00 .00 .00 .00 4 SU .05 .00 1.06 .41 .37 .46 .60 .00 .18 .18 5.67

- N .23 .32 .23 .37 .14 .32 .28 .51 5.67

.05 .18 .18 .23 .09 .14 .09 .05 2.53

.09 .14 .18 .46 .05 .14 .23 .23 2.53 7 SS

.09 .05 .09 .14 .09 .18 .18 .14 1.52

.18 .09 .00 .05 .09 .14 .00 1.52 MS .00

.09 .00 .00 .00 .00 .00 .00 .00 .28 .28 ES .00 .00 .00 .00 .05 .05 .00 .09

.00 .00 .00 .00 .00 .00 .09 .00 .09 EU .00 .00 .00 .00 .00 .00 .00 .00 .09

.00 .00 .00 .00 .00 .09 .28 .14 .78 MU .00 .05 .14 .09 .00 .00 .00 .00 .78

.05 .00 .05 .09 .18 .05 .09 .18 .05 1.20 1.20 8 SU .14 .05 .00 .05 .05 .05 .14

.46 .23 .78 .51 .60 .46 11.66 11.66

.69 .74 .46 1.43 .41

-N .46 .55 1.01 1.80 1.06

.32 .23 .41 .32 .14 .18 .23 .18 .18 4.70 4.70 1 SS .23 .28 .28 .46 .60 .23 .41

.18 .23 .14 .37 .09 .41 .18 .28 .09 2.76 2 MS .14 .18 .14 .00 .09 .00 .23 2.76

.05 .00 .00 .00 .14 .18 .00 .46 .46 ES .00 .00 .00 .00 .05 .00 .00 .00 .05

.05 .00 .00 .00 .00 .05 .00 .09 .23 .23 EU .00 .00 . 00 .05 .0D

.00 .00 .00

.09 .00 .09 .14 .05 .18 .05 .05 .88 .88

.00 .00 .00 .00 .05 .14 .00 1 MU .05

.00 .09 .09 .14 .32 .05 .05 .05 .05 1.34

.18 .18 .00 .00 .00 .05 .09 1.34 3 SU 15.62

-N .74 1.34 .74 .92 1.66 .97 .32 .41 1.11 1.20 .55 .83 1.15 1.57 .92 1.20 15.62 1.01 .41 12.07 12.07

.69 .60 .51 .37 1.75 2.03 .88 .41 1.80 .97 1 SS .46 .14 .05 .00

.00 .23 .00 .00 .23 .69 .74 .69 .60 .83 .46 4.84 4.84 8 MS .23 .14 .00 .00 .00

.00 .00 .00 .05 .05 .14 .00 .09 .09 .23 .00 .69 .69 ES .00 .00 .00 .00 .05

ComEd DRESDEN STATION January-March 2000 300-35 ft. DIFFERENTIAL TEMPERATURE 300 ft. WINDSPEED and WIND DIRECTION

......... STABILITY CLASSES --------

SPEED .................................. WIND DIRECTION CLASSES ..................................

EU MU SU N SS MS E!

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL

.00 .00 .00 .00 .00 .00 .00 .09 .23 .00 .00 .60 .60 EU .00 .23 .05 .00 .00

.00 .00 .00 .00 .05 .05 .00 .14 .28 .05 .05 .65 .65 1 MU .00 .05 .00 .00 .00

.00 .00 .00 .00 .09 .14 .00 .18 .23 .14 .14 1.29 1.29 9 SU .09 .23 .05 .00 .00

.88 .46 .32 1.11 1.80 1.15 1.20 11.52 11.52 N .23 .83 .18 .00 .60 .55 .05 1.11 1.06

.09 .23 .92 1.52 .92 .37 .65 .55 .78 .46 .46 7.19 7.19 2 SS .18 .00 .00 .00 .05

.05 .14 .00 .00 .41 .09 .23 .00 .09 .05 .23 1.57 1.57 4 MS .28 .00 .00 .00 .00

.09 .00 .00 .00 .14 .00 .00 .00 .00 .00 .05 .28 ES .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .05 .09 .00 .00 .14 .14 EU .00 .00 .00 .00

.00 .00 .09 .00 .00 .00 .05 .09 .00 .00 .23 .23 G MU .00 .00 .00 .00 .00 .00

.05 .00 .14 .00 .00 .09 .00 .55 .55 T SU .00 .00 .00 .00 .00 .00 .00 .00 .28 1.24 .37 .14 .28 .60 .32 .28 .23 4.24 4.24 N .00 .09 .05 .00 .00 .00 .00 .65

.00 .28 .37 .18 .14 .32 .09 .00 .00 .00 1.38 1.38 2 SS .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 4MS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 .00 .00 TOT 4.06 5.02 3.41 4.29 5.35 4.10 4.24 5.76 11.11 8.71 5.99 5.90 9.12 9.31 7.56 6.08 100.00 1.11 2.81 4.75 49.22 28.43 11.66 2.03 Wind Direction by Stability ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES N NNE NE ENE E Extremely Unstable

.05 .23 .05 .00 .00 .00 .05 .00 .05 .00 .00 .00 .14 .46 .00 .09 1.11 Moderately Unstable

.14 .09 .18 .09 .00 .05 .14 .00 .18 .05 .14 .14 .28 .69 .41 .23 2.81 Slightly Unstable

.46 .46 .14 .09 .05 .09 .23 .05 .37 .32 .41 .65 .37 .37 .46 .23 4.75 Neutral 1.71 3.18 2.21 3.09 3.50 2.63 1.52 3.18 5.90 3.32 1.98 2.12 4.29 4.19 3.13 3.27 49.22 Slightly Stable 1.01 .55 .55 .97 1.47 1.06 1.43 2.12 3.96 3.73 1.94 1.80 2.72 2.26 1.75 1.11 28.43 Moderately Stable

.69 .51 .28 .05 .18 .14 .83 .32 .41 .92 1.34 1.20 1.24 1.11 1.34 1.11 11.66 Extremely Stable

.00 .00 .00 .00 .14 .14 .05 .09 .23 .37 .18 .00 .09 .23 .46 .05 2.03 Wind Direction by Wind Speed SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WINDSPEED CLASSES N NNE NE ENE E ESE CALM

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1.0 - 3.5 mph

.18 .05 .09 .09 .18 .09 .32 .18 .18 .28 .18 .05 .09 .18 .05 .18 2.40 3.6 - 7.5 mph

.46 .65 .65 .88 .28 .60 .65 .83 1.29 .69 .69 .83 .92 .37 .51 .37 10.65 7.6 - 12.5 mph

.97 1.11 1.57 2.40 1.84 .97 1.52 1.01 1.94 1.06 1.24 .65 1.43 1.34 1.71 .92 21.66 12.6 - 18.5 mph 1.66 1.80 .78 .92 2.40 1.66 1.34 .78 3.13 3.59 2.49 2.44 3.82 3.50 3.09 2.26 35.67 18.6 - 24.5 mph

.78 1.34 .28 .00 .65 .78 .41 2.03 2.58 2.49 1.11 1.20 2.07 3.41 1.84 2.12 23.09 24.5 mph

.00 .09 .05 .00 .00 .00 .00 .92 1.98 .60 .28 .74 .78 .51 .37 .23 6.54

ComEd DRESDEN STATION April-June 2000 300-35 ft. DIFFERENTIAL TEMPERATURE 300 ft. WINDSPEED and WINDDIRECTION NUMBER OF OBSERVATIONS = 2122 VALUES AREPERCENT OCCURRENCE

......... STABILITY CLASSES .........

SPEED .................................. WIND DIRECTION CLASSES ..................................

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS ES

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00 .00

.00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 MU

.00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 C SU

.00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 A N

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 L SS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 N MS

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 EU .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 MU

.00 .00 .00 .00 .00 .00 .00 .05 .05 1 SU .00 .00 .00 .05 .00 .00 .00 .00

.05 .05 .19 .05 .14 .09 1.37 1.37

.N .05 .14 .05 .09 .14 .00 .05 .05 .19

.05 .00 .00 .00 .05 .00 .00 .28 .28

.00 .00 .05 .00 .00 .05 .05 .00 3 SS

.00 .00 .05 .09 .09 .00 .47 .47 MS .00 .09 .00 .05 .05 .00 .00 .00 .05

.00 .05 .14 .00 .00 .24 .24

.00 .00 .00 .00 .00 .00 .00 .00 .00 .05 ES

.00 .00 .00 .00 .00 .00 .00 .00 .19 .19 EU .14 .05 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .28 .28

.05 .19 .00 .00 .00 .00 .00 .00 MU

.05 .00 .05 .00 .00 .14 .09 .00 .09 1.04 1.04 4 SU .19 .24 .09 .05 .00 .00

.52 .38 .24 .71 .28 .71 .52 7.92 7.92

-N .19 .52 .71 .52 .33 .61 .38 .71

.24 .05 .05 .05 .05 .05 2.92

.14 .14 .90 .24 .09 .05 .33 .28 .09 2.92 7 SS

.24 .14 .19 .05 .14 .38 .24 2.07 MS .00 .05 .09 .24 .05 .05 .09 .14 2.07

.00 .00 .09 .00 .05 .33 .33

.05 .00 .05 .05 .00 .00 .00 .00 .00 .05 ES

.00 .00 .00 .00 .00 .00 .00 .00 .00 .09 .33 .33 EU .09 .05 .00 .00 .00

.09

.00 .00 .00 .05 .09 .00 .05 .00 .14 .94 .94 MU .09 .14 .28 .09 .00 .00 .00

.00 .00 .09 .00 .00 .05 .05 .14 1.04

.05 .14 .19 .09 .09 .05 .05 .05 1.04 8 SU 13.34

.99 1.13 1.23 .85 .52 .38 .24 .47 13.34

-N .75 .75 .80 2.36 1.46 .57 .24 .61

.28 .24 .90 .19 .33 .14 7.07 7.07

.42 .47 .42 .57 .61 .38 .42 .57 .71 .42 1 SS

.33 .47 .38 .05 .09 .28 .33 .14 .47 .19 3.49 3.49 2 MS .14 .38 .14 .05 .00 .05

.05 .05 .00 .05 .14 .00 .00 .09 .09 .52 ES .00 .05 .00 .00 .00 .00 .00 .52

.09 .00 .00 .05 .14 .94

.00 .28 .05 .14 .00 .00 .00 .00 .00 .05 .14 .94 EU

.00 .00 .09 .09 .14 .85 .85

.00 .05 .00 .00 .00 .05 .00 .09 .28 .05 1 MU .00

.19 .33 .19 .33 .24 .09 1.93 1.93

.00 .09 .05 .00 .00 .00 .00 .24 .14 .05 3 SU 12.25 1.27 1.08 .66 .57 .80 .61 .66 12.25 N .71 .90 .94 .33 .75 .52 .33 1.18 .94

.85 .47 .71 .94 .24 12.87 12.87

.28 .80 .09 .42 .75 .52 1.23 1.70 2.40 1.18 1 SS .28

.09 .28 .24 .47 .14 .28 .09 .19 3.16

.28 .19 .05 .05 .00 .24 .33 .24 3.16 8 MS

.00 .05 .09 .00 .00 .05 .47 .47

.00 .00 .09 .00 .00 .05 .09 .00 .05 .00 ES

ComEd DRESDEN STATION April-June 2000 300-35 ft. DIFFERENTIAL TEMPERATURE 300 ft. WINDSPEED and WINDDIRECTION

........... ........... STABILITY CLASSES ----------

SPEED .................................. WINDDIRECTION CLASSES CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS E!

EU .00 .05 .33 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .24 .00 .09 .71 .71

.00 .00 .09 .00 .00 .28 .09 .28 .09 .09 .99 .99 1 MU .00 .05 .00 .00 .00 .00

.05 .09 .33 .14 .14 .05 .19 .19 .05 1.27 1.27 9 SU .00 .00 .05 .00 .00 .00 .00

.52 .80 1.27 .90 .24 .38 .71 .75 .52 8.58 8.58 N .47 .94 .33 .00 .05 .61 .09

.09 1.13 1.56 1.60 .61 .09 .33 .24 .05 6.17 2 SS .05 .14 .14 .00 .05 .05 .05 6.17

.00 .09 .38 .28 .05 .00 .00 .00 .00 .90 .90 4 MS .05 .00 .05 .00 .00 .00 .00

.05 .00 .00 .00 .05 .00 .00 .00 .00 .00 .09 .09 ES .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 EU .00 .00 .00 .00 .00 .O0 .00 .00 .00 .00 .00 .00

.05 .00 .00 .00 .00 .05 .05 .00 .00 .19 G MU .00 .00 .05 .00 .00 .00 .00 .19

.05 .09 .00 .14 .00 .09 .24 .00 .05 .66 .66 T SU .00 .00 .00 .00 .00 .00 .00

.00 .19 .19 .24 .14 .05 .61 .14 .24 2.92 2.92 N .61 .24 .00 .00 .00 .28 .00

.09 .05 .19 .24 .09 .05 .24 .14 .00 .05 1.18 1.18 2 SS .00 .05 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 4 MS .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 .00 .00 TOT 5.00 6.03 6.27 5.70 4.71 4.19 3.39 6.36 9.00 11.07 9.00 6.08 5.47 6.79 5.98 4.95 100.00 2.17 3.25 5.98 46.37 30.49 10.08 1.65 Wind Direction by Stability NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES N NNE Extremely Unstable

.09 .57 .47 .14 .00 .00 .00 .00 .00 .05 .14 .09 .00 .24 .05 .33 2.17 3.25 Moderately Unstable

.24 .57 .09 .00 .00 .05 .05 .19 .28 .09 .38 .14 .47 .19 .38

.14 5.98 Slightly Unstable

.52 .19 .19 .05 .05 .42 .33 .42 .57 .47 .47 .90 .47 .42

.09 .42 Neutral 3.20 3.06 2.73 3.44 2.87 2.45 1.27 2.73 3.68 4.57 3.86 2.17 2.40 2.83 2.59 2.50 46.37 Slightly Stable

.99 1.08 1.51 1.60 1.32 1.27 1.18 2.31 4.01 4.76 3.39 1.79 1.74 1.46 1.56 .52 30.49 Moderately Stable

.47 .57 .38 .19 .28 .38 .71 .80 .71 .99 .75 .99 .57 .66 1.04 .61 10.08 Extremely Stable

.00 .09 .09 .05 .05 .05 .14 .05 .09 .00 .19 .19 .14 .24 .09 .19 1.65 Wind Direction by Wind Speed SW WSW W WNW NW NNW TOTAL -WINDSPEED CLASSES N NNE NE ENE E ESE SE SSE S SSW CALM

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1.0 3.5 mph

.09 .05 .24 .09 .19 .19 .05 .09 .05 .28 .09 .05 .28 .33 .24 .09 2.40 3.6 - 7.5 mph

.90 .75 1.18 1.84 1.08 .47 .71 .85 1.13 .90 .80 .47 .94 .66 1.13 .94 14.75 7.6 - 12.5 mph 1.56 2.03 1.89 3.16 2.17 1.04 1.04 1.74 2.12 1.60 1.79 1.60 1.74 .80 1.18 1.27 26.72 12.6 - 18.5 mph 1.27 1.74 2.03 .61 1.18 1.56 1.32 2.87 3.02 4.34 2.87 2.45 1.46 2.21 2.03 1.51 32.47 18.6 - 24.5 mph

.57 1.18 .90 .00 .09 .66 .19 .66 2.21 3.53 2.97 1.32 .61 1.74 1.27 .80 18.71

> 24.5 mph

.61 .28 .05 .00 .00 .28 .09 .14 .47 .42 .47 .19 .42 1.04 .14 .33 4.95

ComEd DRESDEN STATION July-September 2000 300 ft. WINDSPEED and WINDDIRECTION 300-35 ft. DIFFERENTIAL TEMPERATURE NUMBER OF OBSERVATIONS = 2180 VALUES AREPERCENT OCCURRENCE SPEED ----------------------------------WINDDIRECTION CLASSES STABILITY CLASSES ..........

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL EU MU SU N SS MS Eý EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 MU .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C SU .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 A N .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 L SS .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 MMS .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 MU .00 .00

.00 .00 .05 .O0 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .05 1SU .00

.00 .05 .14 .00 .00 .00 .09 .05 .05 .14 .05 .00 .09 .05 .87 .87

. N .05 .14

.00 .14 .00 .05 .05 .00 .05 .00 .05 .05 .00 .05 .09 .05 .55 .55 3 SS .00 .00

.14 .09 .09 .00 .00 .05 .00 .00 .00 .00 .00 .05 .00 .00 .00 .46 .46 MS .05

.05 .00 .00 .05 .00 .00 .05 .00 .00 .00 .00 .00 .00 .14 .14 ES .00 .00 .00

.18 .05 .00 .00 .00 .05 .00 .00 .00 .00 .05 .05 .00 .00 .69 .69 EU .14 .18

.09 .18 .14 .09 .05 .14 .05 .00 .00 .09 .05 .00 .05 .05 1.10 1.10 HU .00 .14

.23 .41 .28 .00 .09 .09 .23 .14 .00 .14 .09 .09 .09 .05 2.16 2.16 4 SU .05 .18

.23 1.10 .78 .23 .28 .37 .41 .41 .23 .32 .14 .14 .32 .09 5.96 5.96

- N .46 .46

.50 .92 .41 .14 .37 .14 .14 .09 .23 .05 .37 .09 .18 .09 4.04 4.04 7 SS .05 .28

.14 .23 .28 .14 .05 .09 .18 .14 .09 .09 .14 .09 .05 .09 .00 1.93 MS .14 1.93

.00 .00 .00 .00 .05 .00 .00 .00 .00 .05 .05 .05 .09 .46 .46 ES .05 .09 .05

.18 .00 .00 .00 .18 .00 .09 .05 .05 .00 .23 1.83 1.83 EU .18 .23 .46 .05 .14

.14 .09 .14 .32 .28 .18 .28 .05 .09 .28 .05 .09 .32 3.26 3.26 HU .09 .32 .55

.32 .23 .28 .23 .14 .18 .37 .14 .09 .41 .37 3.76 3.76 8 SU .18 .28 .09 .32 .14

.28 .92 .73 .78 .64 .87 .64 14.77 14.77

- N .55 1.19 1.47 1.79 1.06 .78 1.42 1.15 .50

.73 .69 .69 .78 1.10 .78 .64 .55 .55 .46 .28 11.93 11.93 1 SS .23 1.10 1.51 .64 1.19

.05 .32 .64 .09 .37 .23 .32 .37 .09 .28 .14 3.99 3.99 2 MS .14 .60 .23 .05 .09

.00 .00 .00 .09 .09 .05 .14 .18 .00 .18 .00 .96 ES .23 .00 .00 .00 .00 .96

.00 .00 .09 .14 .14 .00 .05 .00 .00 .05 .64 .64 EU .18 .00 .00 .00 .00 .00

.09 .00 .05 .14 .09 .05 .09 .14 .14 .18 .05 .00 .00 .00 1.28 1.28 1 MU .09 .18

.05 .00 .05 .05 .05 .00 .37 .50 .05 .23 .14 .00 .09 .14 1.97 1.97 3 SU .23 .05 N .83 .96 .55 .73 1.38 1.01 .78 .55 .37 .18 .46 1.10 10.83 10.83

.92 .14 .37 .50

.73 .37 .73 1.24 .60 1.83 2.48 2.16 .50 .64 .69 .41 .09 .28 13.67 13.67 1 SS .32 .60

.00 .00 .00 .37 .55 .46 .23 .64 .50 .41 .14 .09 .09 .37 4.54 4.54 8 MS .23 .46

.00 .00 .00 .05 .00 .00 .09 .05 .00 .00 .00 .05 .14 .55 ES .18 .00 .00

ComEd DRESDEN STATION July-September 2000 300 ft. WINDSPEED and WINDDIRECTION 300-35 ft. DIFFERENTIAL TEMPERATURE WIND DIRECTION CLASSES S.............................. STABILITY CLASSES --------.

SPEED ..................................

WNW NW NNW TOTAL EU MU SU N SS MS E.

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W EU .05 .05 .00 .00 .00 .00 .00 .00 .09 .00 .00 .00 .00 .00 .00 .23 .41 .41

.00 .00 .00 .00 .00 .14 .00 .00 .00 .00 .00 .00 .23 .23 1MU .05 .05 .00 .00

.00 .00 .00 .00 .00 .00 .14 .00 .00 .00 .05 .00 .28 .28 9 SU .05 .05 .00 .00

.00 .00 .23 .05 .23 .18 .28 .05 .00 .00 .09 .05 1.70 1.70 N .09 .32 .14 .00

.14 .41 .05 .00 1.15 .55 .14 .05 .14 .05 .00 .28 3.03 3.03 2 SS .00 .05 .05 .00

.00 .05 .00 .05 .14 .32 .18 .09 .00 .00 .00 .18 1.28 1.28 4 MS .28 .00 .00 .00

.00 .00 .00 .00 .05 .23 .00 .00 .00 .00 .00 .28 ES .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 G MU .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 T SU .00 .00 .00 .00 .00

.00 .05 .05 .00 .00 .00 .00 .00 .00 .05 .00 .14 .14 N .00 .00 .00 .00 .00

.00 .00 .05 .14 .00 .00 .00 .00 .00 .00 .18 .18 2 SS .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .09 .00 .00 .00 .00 .00 .00 .09 .09 4 MS .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 .00 .00 .00 TOT 5.14 8.21 7.89 6.79 5.92 5.00 5.69 6.88 10.18 10.28 5.55 5.50 4.82 2.71 4.22 5.23 100.00 3.58 5.87 8.21 34.27 33.39 12.29 2.39 Wind Direction by Stability ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES.

N NNE NE Extremely Unstable

.55 .46 .64 .09 .14 .18 .00 .05 .18 .32 .14 .09 .14 .09 .00 .50 3.58 Moderately Unstable

.23 .69 .73 .32 .28 .37 .46 .46 .32 .55 .18 .37 .37 .05 .14 .37 5.87 Slightly Unstable

.50 .55 .37 .78 .46 .37 .37 .37 .83 .78 .37 .73 .37 .18 .64 .55 8.21 Neutral 1.97 3.07 2.75 3.07 2.34 1.01 2.02 1.97 3.53 2.80 1.83 1.79 1.33 .96 1.88 1.93 34.27 Slightly Stable

.60 2.02 2.80 2.06 2.48 2.57 1.74 2.66 4.63 4.04 1.70 1.42 1.74 1.15 .83 .96 33.39 Moderately Stable

.83 1.33 .55 .41 .23 .50 1.01 1.33 .60 1.51 1.01 .96 .64 .23 .46 .69 12.29 Extremely Stable

.46 .09 .05 .05 .00 .00 .09 .05 .09 .28 .32 .14 .23 .05 .28 .23 2.39 Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -WINDSPEED CLASSES CALM

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1.0 3.5 mph

.09 .28 .09 .37 .14 .05 .14 .00 .14 .09 .09 .18 .09 .05 .18 .09 2.06 3.6 - 7.5 mph

.87 1.47 1.51 2.94 1.74 .50 .87 1.01 .96 .73 .55 .73 .83 .46 .78 .37 16.33 7.6 - 12.5 mph 1.61 3.72 4.31 2.98 2.71 1.70 2.48 2.66 2.80 3.30 1.79 2.39 2.34 1.47 2.29 1.97 40.50 12.6 - 18.5 mph 2.06 2.25 1.79 .50 1.19 2.29 1.88 3.07 4.63 4.68 2.16 2.02 1.42 .69 .78 2.06 33.49 18.6 - 24.5 mph

.50 .50 .18 .00 .14 .46 .28 .09 1.61 1.24 .96 .18 .14 .05 .14 .73 7.20

> 24.5 mph

.00 .00 .00 .00 .00 .00 .05 .05 .05 .23 .00 .00 .00 .00 .05 .00 .41

ComEd DRESDEN STATION October-December 2000 300 ft. WINDSPEED and WINDDIRECTION 300-35 ft. DIFFERENTIAL TEMPERATURE NUMBER OF OBSERVATIONS = 2023 VALUES AREPERCENT OCCURRENCE SPEED ................................ WINDDIRECTION CLASSES ..................................

W. ......... STABILITY CLASSES ..........

CLASS N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWTOTAL EU MU SU N SS MS ES EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 MU .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C SU

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 A N

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 L SS MMS .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU MU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1 SU .00 .00 .05 .05 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .10 .10

.N .05 .15 .15 .10 .00 .15 .10 .00 .00 .05 .10 .05 .00 .05 .10 .05 1.09 1.09

.00 .10 .05 .00 .05 .00 .05 .00 .00 .10 .05 .05 .10 .10 .00 .05 .69 .69 3 SS

.00 .00 .00 .00 .05 .00 .00 .05 .10 .00 .15 .05 .10 .05 .00 .00 .54 MS

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .05 .00 .00 .10 .10 ES

.00 .00 .05 .05 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .10 .10 EU

.00 .00 .05 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .00 .05 .30 .30 MU .15

.05 .10 .05 .00 .05 .00 .00 .05 .00 .00 .05 .10 .15 .00 .05 .00 .64 .64 4 SU

.N .44 .15 .25 .74 .54 .49 .40 .79 .25 .20 .30 .30 .40 .49 .44 .44 6.62 6.62

.15 .00 .40 .30 .05 .15 .35 .20 .20 .20 .44 .20 .30 .49 .25 3.81 3.81 7 SS .15

.20 .05 .20 .15 .15 .20 .30 .20 .15 .25 .15 .20 .10 .25 .00 2.57 2.57 MS .05

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .25 .00 .00 .00 .00 .25 .25 ES .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .15 .00 .00 .20 .20 EU .00

.00 .00 .00 .00 .10 .00 .00 .00 .00 .00 .25 .05 .05 .10 .10 .64 .64 MU .00

.05 .00 .00 .00 .00 .05 .05 .15 .15 .00 .05 .25 .10 .00 .05 .05 .94 .94 8 SU

.89 1.19 .84 .35 .35 .84 .25 .40 .49 .84 2.13 .84 .99 .44 11.47 11.47

-N .20 .44

.25 .49 .40 .30 .25 .54 1.04 .40 .74 .99 1.14 .20 .44 .69 .25 8.45 8.45 1 SS .35

.10 .15 .10 .10 .10 .00 .20 .44 .00 .30 .25 .74 .74 .35 .20 .10 3.86 3.86 2 MS

.15 .05 .00 .00 .00 .00 .00 .00 .05 .00 .00 .20 .20 .00 .05 .74 .74 ES .05

.00 .00 .00 .00 .00 .00 .00 .00 .10 .15 .20 .00 .44 -44 EU .00 .00 .00 .00

.00 .00 .00 .05 .10 .05 .00 .00 .10 .10 .20 .20 .15 .00 .94 .94 1 MU .00 .00

.00 .00 .00 .10 .00 .30 .00 .20 .20 .25 .05 .40 .10 .00 1.58 1.58 3 SU .00 .00

-N .54 .99 .15 .69 .54 .40 .94 .59 .89 1.29 1.33 3.26 2.42 .89 .69 16.31 16.31

.69

.69 .64 1.14 .54 .79 1.43 .64 .89 1.58 1.48 .35 .54 11.72 11.72 1 SS .35 .30 .35 .00

.00 .00 .20 .44 .05 .40 .54 .40 .20 .15 .40 .25 .44 3.86 3.86 8 MS .35 .05 .00

.00 .00 .00 .00 .00 .00 .00 .05 .25 .10 .00 .54 .10 .20 .00 1.33 1.33 ES .10

ComEd DRESDEN STATION October-December 2000 300 ft. WINDSPEED and WINDDIRECTION 300-35 ft. DIFFERENTIAL TEMPERATURE WINDDIRECTION CLASSES .................................. ......... STABILITY CLASSES ..........

SPEED ..................................

E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL IEU MU SU N SS MS E!

CLASS N NNE NE ENE EU .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 I MU .00 .00 .00 .00 .00 .00 .00 .05 .00 .05 .15 .00 .05 .00 .05 .10 .44 .44

.00 .00 .00 .00 .00 .00 .00 .00 .05 .05 .05 .05 .00 .05 .10 .35 .35 9 SU .00 N .35 .20 .05 .00 .10 .15 .35 .35 .79 .44 .49 .99 2.72 1.04 1.09 .69 9.79 9.79

.05 .00 .00 .15 .44 .64 .05 1.09 .64 .30 .00 .35 .35 .00 .35 4.55 4.55 2 SS .15

.05 .00 .00 .00 .00 .05 .00 .00 .15 .35 .00 .00 .15 .20 .00 .05 .99 .99 4 MS

.00 .00 .00 .00 .00 .00 .00 .00 .00 .15 .10 .00 .05 .10 .00 .00 .40 .40 ES

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 EU

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 G MU .00

.00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .00 .00 .00 .00 .05 .05 T SU .00 N .00 .05 .05 .00 .00 .64 .00 .00 .20 .10 .05 .30 1.38 .44 .00 .30 3.51 3.51

.00 .05 .00 .00 .00 .05 .00 .25 .20 .10 .00 .00 .00 .00 .00 .00 .64 .64 2 SS 4 MS .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ES .00 TOT 3.66 3.06 3.61 3.41 4.00 4.45 5.09 6.57 5.78 7.41 6.72 8.80 15.22 10.43 6.67 5.09 100.00 .74 2.32 3.66 48.79 29.86 11.81 2.82 Wind Direction by Stability N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW TOTAL -STABILITY CLASSES

.00 .00 .00 .00 .O0 .00 .00 .00 .15 .30 .20 .00 .74 Extremely Unstable

.00 .00 .05 .05

.15 .10 .10 .00 .05 .25 .40 .30 .25 .30 .25 2.32 Moderately Unstable

.15 .00 .00 .05 .00

.15 .30 .35 .64 .35 .40 .25 .15 3.66 Slightly Unstable

.10 .10 .10 .05 .05 .15 .05 .49 2.62 48.79 Neutral 1.73 1.53 2.37 2.17 2.17 2.32 1.58 2.92 2.08 2.08 2.72 3.81 9.89 5.29 3.51 1.53 1.43 29.86 Slightly Stable

.99 .89 .89 .79 1.48 1.43 2.52 2.22 2.67 3.21 2.17 2.52 2.42 2.67 1.09 .69 .59 11.81 Moderately Stable

.54 .40 .15 .30 .30 .40 .84 .84 .84 1.33 1.04 1.14 1.33

.79 .44 .20 .05 2.82 Extremely Stable

.15 .15 .05 .00 .00 .00 .00 .00 .05 .44 .20 .30 Wind Direction by Wind Speed N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWTOTAL -WINDSPEED CLASSES

.00 .00 CALM

.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

.10 2.52 1.0 - 3.5 mph

.05 .25 .25 .15 .10 .15 .15 .05 .10 .15 .30 .20 .20 .25 .10 14.29 3.6 - 7.5 mph

.84 .59 .40 1.43 1.04 .69 .74 1.48 .64 .54 .79 1.29 .94 .89 1.24 .74 2.03 2.03 .99 26.30 7.6 - 12.5 mph

.74 .99 1.53 1.68 1.24 .74 1.14 2.47 .79 1.48 1.78 3.21 3.46 5.88 5.14 2.13 1.68 36.18 12.6 - 18.5 mph 1.48 .89 1.33 .15 1.38 1.53 2.08 1.88 1.83 3.31 2.72 2.77 16.51 18.6 - 24.5 mph

.54 .25 .05 .00 .25 .64 .99 .44 2.03 1.68 1.09 1.04 3.36 1.68 1.19 1.29 24.5 mph

.00 .10 .05 .00 .00 .69 .00 .25 .40 .25 .05 .30 1.38 .44 .00 .30 4.20

ML020930107

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