Text

Offsite Dose Calculation Manual
	ML13135A013
Person / Time
Site:	Monticello
Issue date:	05/10/2013
From:	; Xcel Energy
To:	; Office of Nuclear Reactor Regulation
References
	Download: ML13135A013 (273)
	v • d • e

ENCLOSURE 3 OFFSITE DOSE CALCULATION MANUAL The Offsite Dose Calculation Manual for the Monticello Nuclear Generating Plant is comprised of the following documents:

Document Number Title Revision ODCM-Index Index 4 ODCM-01.01 Introduction 5 ODCM-02.01 Liquid Effluents 10 ODCM-03.01 Gaseous Effluents 11 ODCM-04.01 Liquid Effluent Calculations 2 ODCM-05.01 Gaseous Effluent Calculations 7 ODCM-06.01 Dose From All Uranium Fuel Cycle Sources 3 ODCM-07.01 Radiological Environmental Monitoring Program 21 ODCM-08.01 Reporting Requirements 8 ODCM-APP-A Appendix A 1 ODCM-APP-B Appendix B 2 ODCM-APP-C Appendix C 0 ODCM-HISTORY ODCM History 0 272 pages follow

MONTICELLO NUCLEAR GENERATING PLANT ODCM-INDEX TITLE: OFFSITE DOSE CALCULATION MANUAL Revision 4*

INDEX Page 1 of 1 NO. TITLE ODCM-01.01 INTRODUCTION ODCM-02.01 LIQUID EFFLUENTS ODCM-03.01 GASEOUS EFFLUENTS ODCM-04.01 LIQUID EFFLUENT CALCULATIONS ODCM-05.01 GASEOUS EFFLUENT CALCULATIONS ODCM-06.01 DOSE FROM ALL URANIUM FUEL CYCLE SOURCES ODCM-07.01 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ODCM-08.01 REPORTING REQUIREMENTS ODCM-APP-A APPENDIX A ODCM-APP-B APPENDIX B ODCM-APP-C APPENDIX C ODCM-HISTORY ODCM-HISTORY

This is a major rewrite, therefore no sidelines are required.

Approval: PCR 01127146 M/mlb

I MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 5 Page 1 of 9 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD O F REVISIO N ............................................... 2 2.0 OFF-SITE DOSE CALCULATION MANUAL (ODCM) INTRODUCTION ...... 3 2.1 ODCM Description and Control ................................... 3 2.2 Licensee Initiated Changes to the ODCM .......................... 3 2 .3 D efinitio ns ................................ ..................... 4 2.4 Radiological Effluent Controls And Surveillance Requirement ......... 8 Approval: PCR 01128073 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 5 1Page 2 of 9 1.0 RECORD OF REVISION Revision No. Date Reason for Revision 1 December - 1998 Corrected typo in reference to 10CFR50.36a on page 2, paragraph 1.

2 October - 2000 Incorporated Tech Spec 6.8.A.1, 6.8.A.2, and 6.8.A.3 relating to ODCM control and the relocated definitions into document.

3 January - 2004 Changed definition of "Member of the Public" to the new 10CFR20 definition.

4 June - 2005 Incorporated changes made during the conversion of the Current Technical Specifications to the Improved pTechnical Specifications. This includes dual step annotation.

5 March - 2008 Added reference to ISFSI and 1 OCFR72.104. Removed references to CTS. Revised 2.4.1 to include the 30 day reporting requirement if any of the controls are exceeded.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 5 Page 3 of 9 2.0 OFF-SITE DOSE CALCULATION MANUAL (ODCM) INTRODUCTION 2.1 ODCM Description and Control 2.1.1 In accordance with Tech Spec 5.5.1.a., the ODCM contains the methodology and parameters used in the calculation of off-site 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.

2.1.2 In accordance with Tech Spec 5.5.1.b., the ODCM also contains the radioactive effluent controls and radiological environmental monitoring activities and descriptions of the information that should be included in the Radiological Environmental Operating Program report and Radioactive Effluent Release reports required by 10CFR50, Appendix I, and 10CFR50.36a.

2.1.3 The ODCM also contains the controls for direct radiation for the plant ISFSI lAW 10CFR72.104.

2.2 Licensee Initiated Changes to the ODCM 2.2.1 In accordance with Tech Spec 5.5.1 .c., licensee initiated changes to the I ODCM SHALL be documented and records of review performed SHALL be retained. This documentation SHALL contain:

A. Sufficient information to support the change(s) together with the appropriate analyses or evaluations justifying the change(s), and B. A determination that the change(s) maintain the levels of radioactive effluent control required by 10CFR20.1302, 40CFR190, 10CFR50.36a, 10CFR72.104, and 10CFR50, Appendix I, and not adversely impact the accuracy or reliability of effluent, dose, or setpoint calculations.

2.2.2 Changes SHALL become effective after review and approval by the Plant Manager.

2.2.3 Changes 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 in 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 year) the change was implemented.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 5 Page 4 of 9 2.3 Definitions 2.3.1 Abnormal Release An unplanned or uncontrolled release of radioactive material from the plant or a gaseous release where the effluent release rate significantly exceeds an established normal release rate. A release which results from procedural or equipment inadequacies, or personnel errors, that could indicate a deficiency.

2.3.2 Action ACTION SHALL be that part of a control which prescribes required actions to be taken under designated conditions within specified completion times.

2.3.3 Batch Release A BATCH RELEASE is a discharge of liquid or gaseous radioactive effluent of a discrete volume. Prior to sampling for analysis, each batch SHALL be isolated and thoroughly mixed to assure representative sampling.

2.3.4 Instrument Calibration An instrument calibration means the adjustment of an instrument signal output so that it corresponds, within acceptable range, accuracy, and response time to a known value(s) of the parameter which the instrument monitors. Calibration SHALL encompass the entire instrument including actuation, alarm or trip.

2.3.5 Sensor Check A qualitative determination of operability by observation of sensor behavior during operation. This determination SHALL include, where possible, comparison with other independent sensor measuring the same variable.

2.3.6 Instrument Functional Test An instrument functional test means the injection of a simulated signal into the primary sensor to verify proper instrument channel response, alarm, and/or initiating action.

2.3.7 Composite Sample A COMPOSITE SAMPLE is one in which the quantity of liquid sampled 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 5 Page 5 of 9 2.3.8 Dose Equivalent 1-131 DOSE EQUIVALENT 1-131 SHALL be that concentration of 1-131

([tCi/gram) that alone would produce the same thyroid dose as the quantity and isotopic mixture of 1-131, 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, "Calculation of Distance Factors for Power and Test Reactor Sites" or in NRC Regulatory Guide 1.109, Revision 1, October 1977.

2.3.9 Exclusion Area Boundary The EXCLUSION AREA BOUNDARY is the same as the Site Boundary described in ODCM-03.01 Figure 1. The EXCLUSION AREA is the area encompassed by the EXCLUSION AREA BOUNDARY.

2.3.10 Offgas Treatment System The OFFGAS TREATMENT SYSTEM SHALL be any system designed and installed to reduce radioactive effluents by collecting primary coolant system offgas from the primary system and providing for delay or holdup for the purpose of reducing the total radioactivity prior to release to the environment.

2.3.11 Liquid Radwaste Treatment System The LIQUID RADWASTE TREATMENT SYSTEM SHALL be any system designed and installed to reduce radioactive effluents by holdup or collecting radioactive materials by means of filtering, evaporation, ion exchange or chemical reaction for the purpose of reducing the total radioactivity prior to release to the environment.

2.3.12 Long Term Release "Long-term" refers to releases that are generally continuous and stable in release rate with some anticipated variation (i.e., <50%, based on a running monthly average) in release rate, such as is experienced in normal ventilation system effluents at nuclear power plants.

Determination of doses due to long-term releases should use the historical annual average relative concentration (X/Q) based on meteorological data summarized, as recommended in Regulatory Guide 1.111.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 5 Page 6 of 9 2.3.13 Member Of The Public MEMBER OF THE PUBLIC is any individual except when that individual is receiving an occupational dose.

2.3.14 Operable - Operability As defined in the Technical Specifications.

2.3.15 Purge - Purging PURGE - PURGING SHALL be any controlled process of discharging air or gas from a confinement to maintain temperature, pressure, humidity, concentration or other operating condition, in such a manner that replacement air or gas is required to purify the confinement.

2.3.16 Radiological Environmental Monitoring Program (REMP)

The RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM is established for monitoring the radiation and radionuclides in the environs of the plant. The program SHALL provide representative measurements of radioactivity in the highest potential exposure pathways and verification of the accuracy of potential exposure pathways and verification of the accuracy of the effluent monitoring program and modeling of the environmental exposure pathways.

2.3.17 Short Term Release "Short-term" refers to releases that are intermittent in radionuclide concentrations or flow, such as releases from drywell purges and systems or components with infrequent use. Short-term releases may be due to operational variations which result in radioactive releases greater than 50% of the releases normally considered as long-term.

Short-term releases from these sources during normal operation, including anticipated operational occurrences, are defined as those which occur for a total of 500 hours0.00579 days 0.139 hours 8.267196e-4 weeks 1.9025e-4 months or less in a calendar year but not more than 150 hours0.00174 days 0.0417 hours 2.480159e-4 weeks 5.7075e-5 months in any quarter.

2.3.18 Site Boundary Means a line within which the land is owned, leased, or otherwise controlled by the licensee. The site boundary for liquid releases of radioactive material is defined in ODCM-02.01 (LIQUID EFFLUENT),

Figure 1. The site boundary for gaseous releases of radioactive material is defined in ODCM-03.01 (GASEOUS EFFLUENTS), Figure 1.

2.3.19 Source Check A SOURCE CHECK SHALL be the qualitative assessment of channel response when the channel sensor is exposed to a radioactive source.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 5 Page 7 of 9 2.3.20 Unrestricted Area An UNRESTRICTED AREA means any area at or beyond the site boundary to which access is not controlled by the licensee for purposes of protection of individuals from exposure to radiation and radioactive materials or any area within the site boundary used for residential quarters or industrial, commercial, institutional and/or recreational purposes.

2.3.21 Uranium Fuel Cycle The URANIUM FUEL CYCLE is defined in 40CFR Part 190.02(b) as:

"The operation of milling of uranium ore, chemical conversion of uranium, isotopic enrichment of uranium, fabrication of uranium fuel, generation of electricity by a light-water-cooled nuclear power plant using uranium fuel, and reprocessing of spent uranium fuel, to the extent that these directly support the production of electrical power for public use utilizing nuclear energy, but excludes mining operations, operations at waste disposal sites, transportation of any radioactive material in support of these operations, and the use of recovered non-uranium special nuclear and by-product materials from the cycle."

2.3.22 Venting VENTING SHALL be the controlled process of discharging air or gas from a confinement to maintain temperature, pressure, humidity, concentration or other operating condition, in such a manner that replacement air or gas is NOT provided or required.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 5 Page 8 of 9 2.4 Radiological Effluent Controls And Surveillance Requirement 2.4.1 Controls A. Compliance with the controls contained within ODCM-02.01, ODCM-03.01 and ODCM-06.01 is required during the conditions specified. Upon failure to meet the control, the associated ACTION requirements SHALL be met.

B. Noncompliance with a control SHALL exist when the requirements of the Control and associated ACTION requirements are. not met within the specified time interval. If the Control is restored prior to expiration of the specified time interval, completion of the ACTION requirements is not required.

C. With the calculated dose from the release of radioactive materials in liquid or gaseous effluents exceeding any of the limits of Controls ODCM-02.01 Section 2.2.1, ODCM-03.01 Section 2.2.1, or ODCM 03.01 Section 2.3.1, prepare and submit within 30 days a special report to the Commission which includes the following:

1. Identifies the cause(s) for exceeding the limit(s) and defines the corrective action(s) that has been taken to reduce the release(s).

2. Lists the proposed corrective action(s) to be taken to assure that subsequent releases will be in compliance with the limits.

D. Noncompliance with a CONTROL and associated ACTION, or a Surveillance Requirement SHALL be documented in the annual "Radioactive Effluent Release Report" covering the period of the noncompliance. Documentation of a noncompliance SHALL identify the cause of the noncompliance, define the corrective actions taken to correct the noncompliance, and a description of actions taken to prevent recurrence.

2.4.2 Surveillance Requirements A. Surveillance Requirements SHALL be met during the conditions specified for individual controls unless otherwise stated in an individual Surveillance Requirement.

B. Each Surveillance Requirement SHALL be performed within the specified time interval with the following exceptions:

1. Specified time intervals between tests may be adjusted plus 25% to accommodate normal test schedules.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 5 Page 9 of 9 C. Failure to perform a Surveillance Requirement within the allowed surveillance interval, defined by Control B, SHALL constitute noncompliance with the OPERABILITY requirements for a Control for operation. The time limits of the ACTION requirements are applicable at the time it is identified that a Surveillance Requirement has not been performed. The ACTION requirements may be delayed for up to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months to permit the completion of the surveillance when the allowable outage time limits of the ACTION requirements are less than 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Surveillance Requirements do not have to be performed on inoperable equipment.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 Page 1 of 16 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION- PAGE 1.0 RECO RD O F REVISIO N ............................................... 2 2.0 LIQ UID EFFLU ENTS .................................................. 4 2 .1 C o ncentratio n .................................................. 4 2 .2 D o se . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Liquid Radwaste Treatment Systems .............................. 5 2.4 Liquid Holdup Tanks ............................................. 6 2 .5 B a se s .. .. . .. . . .. .. . ... . . .. .. .. . . ... . .. .. . .. . . .. . . ... . . .. . .. . .. 7 Figure 1 Monticello Nuclear Generating Plant Site Boundary for Liquid Effluents. 10 Table 1 Radioactive Liquid Effluent Monitoring Instrumentation Surveillance R eq uirem ents .................................................. 11 Table 2 Radioactive Liquid Waste Sampling And Analysis Program ........... 12 Table 3 Radioactive Liquid Effluent Monitoring Instrumentation ............... 15 Approval: PCR 01218232 I/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 1Page 2 of 16 1.0 RECORD OF REVISION Revision No. Date Reason for Revision December - 1998 Corrected reference to Table 2.1-1 from 2.1.2.

October - 2000 Incorporated Radiological Effluents Tech Specs section 3.8.A and 4.8.A. into document.

September - 2002 Revised Actions 2.2.3 and 2.3.3 to standardize documentation and reporting.

December - 2002 Table numbering was restarted to reflect 1, 2 and 3 verses 3, 4 and 5 throughout the document.

August - 2005 Incorporated changes made during the conversion of the Current Technical Specifications to the Improved Technical Specifications. This includes dual step annotation.

February - 2006 This change is being submitted per GAR 01012990. There are no additional changes to the procedures. This revision is being issued to allow PORC review of changes made in revision 5. Revision bars for revision 5 are maintained for review purposes.

April - 2008 Removed references to CTS. Added 30 day reporting requirement to 2.3.3.A.

Removed duplicate paragraph from Bases section 2.5.1.D. Moved paragraph from 2.5.1 .D. to 2.5.1 .A.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 IPage 3 of 16 Revision No. Date Reason for Revision 8 September - 2008 Included frequencies for Flow Instrument Channel Checks in Table 1 lAW NUREG 1302 (Offsite Dose Calculation Manual Guidance) Table 4.3-8.

Revised the frequency of Service Water and Discharge Canal grab samples in Table 3 from every 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months lAW NUREG 1302 (Offsite Dose Calculation Manual Guidance). Table 3.3-12 Action 37.

Created a separate reference to the Service Water Flow Monitor in Table 3 to clarify that only when the Radioactivity Monitor is inoperable that grab samples are required.

9 March - 2009 In Table 3, removed asterisk after "Service Water Discharge Pipe Sample Pump Flow Monitor". The asterisk indicates monitor provided with automatic alarm; this alarm was removed by EC-1 3285.

10 February - 2010 In Table 3, removed the column for "Service Water Discharge Pipe Sample Pump Flow Monitor." The requirement for a daily Channel Check is listed in Table 1, which is in accordance with NUREG 1302 (Offsite Dose Calculation Manual Guidance) Table 4.3-8. The Channel Check requirement is satisfied by the completion of 0000-J OPERATIONS DAILY LOG-PART J OUTPLANT.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 IPage 4 of 16 2.0 LIQUID EFFLUENTS 2.1 Concentration 2.1.1 Controls A. In accordance with Tech Spec 5.5.3.a, 5.5.3.b, and 5.5.3.c, the concentration of liquid radioactive material released from the site (Figure 1) SHALL be limited to ten times the concentration values specified in Appendix B, Table 2, Column 2 of 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 2 x 10-4 [tCi/ml total activity.

2.1.2 Applicability At all times.

2.1.3 Action A. When the concentration of radioactive material in liquid released from the site exceeds the above limits, immediately restore the concentration within acceptable limits.

B. Radioactive material in liquid effluent released from the site SHALL be continuously monitored in accordance with Table 3.

C. The liquid effluent monitors having provisions for automatic alarms as listed in Table 3 SHALL be used to limit the concentration of radioactive material released at any time from the site to the values given in 2.1.1 .A. Setpoints SHALL be determined in accordance with the methods in Section 4.0 of the ODCM.

D. Report all deviations in the Annual Radioactive Effluent Release Report.

2.1.4 Surveillance Requirements A. Radioactive liquid wastes SHALL be sampled and analyzed according to the sampling and analysis program of Table 2.

B. The results of radioactive analysis SHALL be used in accordance with the methods of the ODCM to assure that the concentrations at the point of release are maintained within the limits of Control 2.1.1 .A.

C. Liquid effluent monitoring instrumentation surveillance SHALL be performed as required by Table 1.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 Page 5 of 16 2.2 Dose 2.2.1 Controls A. In accordance with Tech Spec 5.5.3.a, 5.5.3.c, 5.5.3.d, and 5.5.3.e, the dose or dose commitment to a MEMBER OF THE PUBLIC from radioactive material in liquid effluents released from the site SHALL be limited to the following values:

1. During any calendar quarter to < 1.5 mrem to the total body and to _<5 mrem to any organ, and

2. During any calendar year to _< 3 mrem to the total body and to _<10 mrem to any organ.

2.2.2 Applicability At all times.

2.2.3 Action A. With the calculated dose from the release of radioactive materials in liquid effluents exceeding any of the above limits, document and report lAW ODCM-01.01, Section 2.4.1.C.

2.2.4 Surveillance Requirements A. Cumulative dose contributions for the current calendar quarter and current calendar year SHALL be determined monthly in accordance with the ODCM.

2.3 Liquid Radwaste Treatment Systems 2.3.1 Controls A. In accordance with Tech Spec 5.5.3.a, 5.5.3.c, and 5.5.3.f, the LIQUID RADWASTE TREATMENT SYSTEM SHALL be used to reduce the radioactive materials in liquid wastes prior to their discharge when the projected doses, due to the liquid effluent from the site would exceed 0.06 mrem to the whole body or 0.2 mrem to any organ when averaged over one month.

2.3.2 Applicability At all times.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 Page 6 of 16 2.3.3 Action A. With radioactive liquid waste being discharged without treatment and in excess of the above limits, prepare and submit within 30 days a special report to the commission which includes the following:

1. Explanation of why liquid radwaste was being discharged without treatment, identification of any inoperable equipment or subsystems, and the reason for the inoperability.

2. Action(s) taken to restore the inoperable equipment to OPERABLE status.

3. Summary description of section(s) taken to prevent a recurrence. )

2.3.4 Surveillance Requirements A. Doses due to liquid releases SHALL be projected at least once each month in accordance with the ODCM.

2.4 Liquid Holdup Tanks 2.4.1 Controls A. In accordance with Tech Spec 5.5.7.c, the quantity of radioactive material contained in each outside temporary tank SHALL be limited to _<10 curies, excluding tritium and dissolved or entrained gases.

2.4.2 Applicability At all times.

2.4.3 Action A. With the quantity of radioactive material contained in any outside temporary tank exceeding the limit in 2.4.1 .A. above, immediately suspend all additions of radioactive material to the tank and within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months reduce the tank contents to within the limit.

2.4.4 Surveillance Requirements A. The quantity of radioactive material contained in each outside temporary tank SHALL be determined to be within the limit in 2.4.1.A. by analyzing a representative sample of the tank's contents at least weekly when radioactive materials are being added to the tank.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 Page 7 of 16 2.5 Bases 2.5.1 Liquid Effluents A. Concentration Control 2.1.1 .A. is provided to ensure that the concentration of radioactive materials released in liquid waste effluents to Unrestricted Areas will be less than 10 times the concentration values specified in Appendix B, Table 2, Column 2 to 10CFR20.1001-20.2402. The control provides operational flexibility for releasing liquid effluents in concentrations to follow the Section ll.A and ll.C design objectives of Appendix I to 10CFR Part 50. This limitation provides reasonable assurance that the levels of radioactive materials in bodies of water in Unrestricted Areas will result in exposures within (1) the Section ll.A design objectives of Appendix I, 10CFR Part 50, to a Member of the Public and (2) restrictions authorized by'10CFR20.1301 (e).

The concentration limit for the dissolved or entrained noble gases is based upon the assumption that Xe-135 is the controlling radionuclide and its effluent concentration in air (submersion) was converted to an equivalent concentration in water. This control does not affect the requirement to comply with the annual limitations of 10CFR20.1301(a).

Surveillance requirements for continuous liquid release points are not provided since all Monticello releases are "batch" type releases.

B. Dose Control 2.2.1 .A. is provided to implement the requirements of Sections II.A, III.A and IV.A of Appendix I, 10CFR Part 50. Action required by Control 2.2.1 provides the required operating flexibility and at the same time implements 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 is reasonably achievable". Considering that the nearest drinking water supply using the receiving water is 33 river miles downstream, there is reasonable assurance that the operation of the facility will not result in radionuclide concentrations in the finished drinking water that are in excess of the requirements of 40CFR141.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 Page 8 of 16 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 10CFR50, 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, Revision 1," April 1977. NUREG-0133, October 1978 provides methods for dose calculations consistent with Regulatory Guides 1.109 and 1.113.

t C. Liquid Radwaste Treatment Systems Control 2.3.1 .A. provides assurance that the liquid radwaste treatment system will be available for use whenever liquid effluents require treatment prior to release to the environment.

The requirements 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 is reasonably achievable". This control implements the requirements of 10CFR Part 50.36a, General Design Criterion 60 of Appendix A to 1 OCFR Part 50 and design objective Section I1.D of Appendix I to 10CFR Part 50. The specified limits governing the use of appropriate portions of the liquid radwaste treatment system were specified as a suitable fraction of the guide set forth in Section II.A of Appendix I, 10CFR Part 50, for liquid effluents.

The radioactive liquid effluent monitoring instrumentation is provided to monitor and control, as applicable, the releases of radioactive materials in liquid effluents during actual or potential releases of liquid effluents. The Alarm/Trip Setpoint for these instruments SHALL be calculated and adjusted in accordance with the methodologies and parameters in the ODCM to ensure that the alarm/trip will occur prior to exceeding the limits of 10CFR Part 20. The OPERABILITY and use of this instrumentation is consistent with the requirements of General Design Criteria 60,. 63, and 64 of Appendix A to 10CFR Part 50.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 IPage 9 of 16 D. Liquid Holdup Tanks Restrictions on the quantity of radioactive liquid material contained in tanks are required only for temporary tanks. All exterior permanent tanks are diked to prevent release of their contents in the event of leakage. Restricting the quantity of radioactive material contained in the specified tanks provides assurance that in the event of an uncontrolled release of the tanks contents, the resulting concentrations would be less than the values given in Appendix B, Table 2, Column 2, to 10CFR20.1001-20.2402 at the nearest potable water supply and the nearest surface water supply in an unrestricted area.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 Page 10 of 16 Figure 1 Monticello Nuclear Generating Plant Site Boundary for Liquid Effluents t

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 10 Page 11 of 16 Table 1 Radioactive Liquid Effluent Monitoring Instrumentation Surveillance Requirements (D

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I MONTICELLO NUCLEAR GENERATING PLANT I ODCM-02-01 I TITLE: LIQUID EFFLUENTS Revision 10 Page 15 of 16 Table 3 Radioactive Liquid Effluent Monitoring Instrumentation

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Page I of 18

[Approval: PCR 01321728 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD O F REV ISIO N .................................................................................... 2 2.0 GASEOUS EFFLUENTS .................................................................................... 4 2 .1 Do se R ate .............................................................................................. ... 4 2.2 Dose - Noble G ases ................................................................................... 5 2.3 Dose - lodine-131, Iodine-1 33, Tritium and Particulates ............................ 6 2.4 Off-gas Treatment System ........................................................................ 6 2.5 Main Condenser Off-Gas Activity ............................................................. 8 2.6 Containment Venting and Purging ............................................................. 9 2 .7 Ba se s ................................................................................................... . . . 10 Figure 1 Monticello Nuclear Generating Plant Site Boundary for Gaseous E ffl ue nts ............................................................................................... . . 13 Table 1 Radioactive Gaseous Effluent Monitoring Instrumentation Surveillance R eq uirem ents ........................................................................................ . . . 14 Table 2 Radioactive Gaseous Waste Sampling and Analysis Program ................ 15 Table 3 Radioactive Gaseous Effluent Monitoring Instrumentation ....................... 17 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE, GASEOUS EFFLUENTS Revision 11 Page 2 of 18 1.0 RECORD OF REVISION Revision No. Date Reason for Revision 1 August - 1995 Page 3 of 23, 2nd paragraph - Changed "In addition, prior to containment purge and venting," to "In addition, prior to containment purging". This change was made because setpoint recalculation is required only for containment purging and to be consistent with the rest of the ODCM.

Page 3 of 23, first paragraph - Changed "Reactor Building Vent Plenum Monitor which initiates isolation of Reactor Building releases" to "Reactor Building Vent Noble Gas Monitor". This change was made to I differentiate the noble gas monitor from the plenum radiation monitor and because the isolation function has been removed from the noble gas monitor system.

Page 3 of 23, section 1.1.1 - Changed "Reactor Building Vent Isolation Setpoint" to "Reactor Building Vent Alarm Setpoint".

This change was made because the setpoint exceedance no longer causes the Reactor Building Vent to isolate.

Page 4 of 23, Section 1.1.1.B-Changed "For purge releases, substitute (x/q)v, the highest short term dispersion factor from Table A-12" to "For purge releases, substitute the value obtained from Chemistry Manual Procedure 1.06.07 (ATMOSPHERIC DISPERSION DETERMINATION). This change was made to more accurately predict off-site dose from containment purging by using near real time actual dispersion values.

2 October- 2000 Incorporated Radiological Effluents Tech Specs section 3.8.B and 4.8.B into document.

3 November - 2001 Added clarification to section 2.4.1.A. and 2.4.3.A. to more accurately describe Off-gas Treatment System operation requirements. Corrected reference in Note h. of Table 2.

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MONTICELLO NUCLEAR GENERATING PLANT ODCMV-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Paqe 3 of 18I Revision No. Date Reason for Revision 4 September - 2002 Revised Actions 2.2.3 and 2.3.3 to standardize documentation and reporting.

Revised action in Table 3 to make non-functional air ejector off-gas radiation monitors consistent with high monitor readings action in T.S.3.8.A.

Revised action in Table 3 to add compensatory sampling for non-functional hydrogen monitors similar to other non-functional monitors in Table 3.

5 January - 2004 Revised Control 2.4.1.A to make it consistent with Tech Spec 6.8.D.6.

Revised Action 2.4.3.A to accommodate the revised Control (2.4.1 .A).

6 October - 2004 Revised Control 2.6.1 .A to make it consistent with Tech Spec 3.7.D.3.a.

Deleted surveillance requirement 2.6.4.A to conform to T.S.3.7.D.3.a.

7 August - 2005 Incorporated changes made during the conversion of the Current Technical Specifications to the Improved Technical Specifications. This includes dual step annotation.

8 February - 2006 This change is being submitted per GAR 01012990. There are no additional changes to the procedures. This revision is being issued to allow PORC review of changes made in revision 7. Revision bars from revision 7 are maintained for review purposes.

9 January - 2007 Revised Control 2.6.1 and it's bases to allow the use of Standby Gas Treatment System during inerting and deinerting activities.

10 April - 2008 Removed references to CTS. Added 30 day reporting requirements to 2.4.3.A.

11 June 2011 Revised to correct out of date terminology throughout document.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 1 Page 4 of 18 2.0 GASEOUS EFFLUENTS 2.1 Dose Rate 2.1.1 Controls A. In accordance with Tech Spec 5.5.3.a, 5.5.3.c, and 5.5.3.g, the dose rate due to radioactive materials released in gaseous effluents from the site (Figure 1) SHALL be limited to the following values:

1. For Noble Gases: Less than or equal to a dose rate of 500 mrem/yr to the total body and less than or equal to a dose rate of 3000 mrem/yr to the skin, and

2. For Iodine-131, Iodine-133, Tritium, and for all radionuclides in particulate form with half-lives greater than 8 days: Less than or equal to a dose rate of 1500 mrem/yr to any organ.

2.1.2 Applicability At all times.

2.1. 3 Action A. With the dose rate(s) exceeding the above limits, immediately decrease the release rate to within acceptable limits(s).

B. Radioactive material in gaseous effluents released from the site SHALL be continuously monitored in accordance with Table 3.

C. The Noble Gas Effluent monitors having provisions for the automatic termination of gaseous releases, as listed in Table 3 SHALL be used to limit off-site dose rates to the values established in 2.1.1.A.1. Setpoints SHALL be determined in accordance with the ODCM.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Page 5 of 18 2.1.4 Surveillance Requirements A. Gaseous effluent monitoring instrument surveillance SHALL be performed as required by Table 1.

B. The release rate due to Iodine-131, Iodine-133, Tritium, and Radioactive Particulates with half-lives greater than 8 days SHALL be determined by obtaining representative samples and performing analysis in accordance with the sampling and analysis program specified in Table 2. Following each analysis, the dose rate due to 1-131, 1-133, Tritium and Radioactive Particulates with half-lives greater than 8 days, SHALL be determined to be less than the limit in 2.1.1.A.2. in accordance with the ODCM.

2.2 Dose - Noble Gases 2.2.1 Controls A. In accordance with Tech Spec 5.5.3.a, 5.5.3.c, 5.5.3.e and 5.5.3.h, the air dose due to noble gases released in gaseous effluents from the site (Figure 1) SHALL be limited to the following values:

1. During any calendar quarter: < 5 mrad for gamma radiation and < 10 mrad for beta radiation, and

2. During any calendar year: < 10 mrad for gamma radiation and < 20 mrad for beta radiation.

2.2.2 Applicability At all times.

2.2.3 Action A. With the calculated air dose from radioactive noble gases in gaseous effluent exceeding any of the above limits, document and report lAW ODCM-01.01, Section 2.4.1.C.

2.2.4 Surveillance Requirements A. Cumulative dose contributions for the current calendar quarter and current calendar year from noble gases in gaseous effluents SHALL be determined monthly in accordance with the ODCM.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Page 6 of 18 2.3 Dose - Iodine-1 31, Iodine-1 33, Tritium and Particulates 2.3.1 Controls A. In accordance with Tech Spec 5.5.3.a, 5.5.3.c, and 5.5.3.i, the dose to any organ of an individual due to Iodine-1 31, Iodine-1 33, Tritium, and radioactive particulates with a half-life greater than 8 days released from the site (FIGURE 1) in gaseous effluent SHALL be limited to the following values:

1. During any calendar quarter: < 7.5 mrem, and

2. During any calendar year: < 15 mrem.

2.3.2 Applicability At all times.

2.3.3 Action A. With the calculated dose from the release of Iodine-131, Iodine-133, Tritium, and Radioactive Particulates with half-lives greater than 8 days, exceeding any of the above limits, document and report lAW ODCM-01.01, Section 2.4.1.C.

2.3.4 Surveillance Requirements A. Cumulative dose contributions for the current calendar quarter and current calendar year for Iodine-1 31, Iodine-1 33, Tritium, and Radioactive Particulates with half-lives greater than 8 days in gaseous effluents SHALL be determined in accordance with the ODCM monthly.

2.4 Off-,qas Treatment System 2.4.1 Controls A. In accordance with Tech Spec 5.5.3.a, 5.5.3.c, and 5.5.3.f, the OFF-GAS TREATMENT SYSTEM SHALL be in operation whenever the Main Condenser Air Ejector system is in operation.

Components of the system SHALL be operated to provide the maximum holdup time obtainable except:

1. During Plant Startup or Plant Shutdown.

2. During periods of off-gas treatment system equipment maintenance.

3. When off-gas recombiner outlet hydrogen or oxygen concentrations are out of specification.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Page 7 of 18

4. When condenser air in-leakage exceeds off-gas storage compressor capacity.

B. In accordance with Tech Spec 5.5.7.b, the quantity of radioactivity after 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months holdup contained in each gas storage tank SHALL be limited to < 22,000 curies of noble gases (considered as dose equivalent Xe-1 33).

C. In accordance with Tech Spec 5.5.7.a, the concentration of hydrogen in the compressed storage subsystem SHALL be limited to < 2% by volume. With the concentration of hydrogen

> 2% by volume, but < 4% by volume, restore the concentration of hydrogen to < 2% by volume within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or suspend operation of the compressed storage subsystem.

D. The hydrogen monitors SHALL be functional as specified in Table 3 and set to automatically trip the off-gas compressors at

< 4% hydrogen by volume.

2.4.2 Applicability At all times.

2.4.3 Action A. With the Off-gas Treatment System outside the controls listed in 2.4.1.A. and gaseous waste being discharged for more than seven (7) days with an average holdup time of less than 50 hours5.787037e-4 days 0.0139 hours 8.267196e-5 weeks 1.9025e-5 months , prepare and submit within 30 days a special report to the Commission which includes the following:

1. Identification of the non-functional equipment or subsystems and the reason for non-functionality.

2. Action(s) taken to restore the non-functional equipment to FUNCTIONAL status.

3. Summary description of action(s) taken to prevent recurrence.

2.4.4 Surveillance Requirements A. Following each isotopic analysis of a sample of gases from the Main Condenser Off-gas System Pretreatment monitor station required by Tech Spec 3.7.6, verify that the maximum storage tank activity limit specified in 2.4.1 .B cannot be exceeded using the method in the ODCM.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 I Page 8 of 18 2.5 Main Condenser Off-Gas Activity 2.5.1 Controls A. In accordance with Tech Spec 3.7.6, whenever the Steam Jet Air Ejectors (SJAEs) are in operation, the gross gamma activity rate of the noble gases measured at the Main Condenser Off-gas System Pretreatment Monitor station SHALL be < 260 mCi/second after a decay of 30 minutes.

B. The activity of radioactive material in gaseous form removed from the main condenser SHALL be continuously monitored by the Main Condenser Off-Gas Pretreatment monitors in accordance with Table 3.

C. The Main Condenser Off-Gas Pretreatment monitors SHALL be set to automatically terminate off-gas flow within 30 minutes at the limit established in 2.5.1.A.

2.5.2 Applicability At all times 2.5.3 Action A. When the gross gamma activity rate of the noble gases is not within the limit of 2.5.1.A above, restore gross gamma activity rate of the noble gases to within the limit within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months .

B. When 2.5.3.A cannot be met, either:

1. Isolate all main steam lines within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months ; or

2. Isolate the SJAEs within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months ; or

3. Be in hot shutdown within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and cold shutdown within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2.5.4 Surveillance Requirements A. The gross gamma radioactivity of noble gases from the main condenser air ejector SHALL be determined to be within the limit specified in 2.5.1.A at the following times by performing an isotopic analysis of a representative sample of gases:

1. Once every month

2. Within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months following an increase in the continuous monitor reading of 50% after factoring out increases due to power level.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Page 9 of 18 2.6 Containment Venting and Purgqing 2.6.1 Controls A. In accordance with Tech Spec 5.5.3.a, 5.5.3.c, 5.5.3.k, and 3.6.1.3, the inerting and deinerting operations permitted by Tech Spec 3.6.3.1 SHALL be via the 18-inch purge and vent valves (equipped with 40-degree limit stops). All other purging and venting, when primary containment FUNCTIONALITY is required, SHALL be via the 2-inch purge and vent valve bypass line and the Standby Gas Treatment System.

B. In accordance with Tech Spec 5.5.3.a, 5.5.3.c, and 5.5.3.k, Containment inerting following startup and deinerting prior to shutdown should be via the Standby Gas Treatment System.

2.6.2 Applicability At all times.

2.6.3 Action None 2.6.4 Surveillance Requirements A. Prior to containment purging, the sampling and analysis requirements of Table 2 SHALL be met.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 I TITLE: GASEOUS EFFLUENTS Revision 11 Page 10 of 18 2.7 Bases 2.7.1 Gaseous Effluents A. Dose Rate Control 2.1.1.A. provides reasonable assurance that radioactive material discharged in gaseous effluents will not result in the exposure of a Member of the Public in an Unrestricted Area, either at or beyond the Site Boundary in excess of the design objectives of Appendix I to 10CFR Part 50. This specification is provided to ensure that gaseous effluents from all units on the site will be appropriately controlled. It provides operational flexibility for releasing gaseous effluents to satisfy the Section II.A and II.C design objectives of Appendix I to 10CFR Part 50. For Members of the Public who may at times be within the Site Boundary, the occupancy of that Member of the Public will usually be 'sufficiently low to compensate for the reduced atmospheric dispersion of gaseous effluents relative to that for the Site Boundary. The specified release rate limits restrict, at all times, the corresponding dose rates above background to a Member of the Public at or beyond the Site 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 to a child via the inhalation pathway to less than or equal to 1500 mrem/year. This specification does not affect the requirement to comply with the annual limitations of 10CFR20.1301 (a).

B. Dose From Noble Gas Control 2.2.1.A. is provided to implement the requirements of Sections 11.B, III.A and IV.A of Appendix 1, 10CFR Part 50. Action required by Control 2.2.1 provides the required operating flexibility and at the same time implements the guides set forth in Section IV.A of Appendix I to assure that the releases of radioactive material in gaseous effluents will be kept "as low as 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 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Page 11 of 18 10CFR 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. The ODCM equations provided for determining the air doses at the restricted area boundary may be based upon the historical average atmospheric conditions. NUREG-0133, October, 1978 provides methods for dose calculations with Regulatory Guides 1.109 and 1.111.

C. Dose From Iodine 131, Iodine 133, Tritium & Particulates Control 2.3.1.A. is provided to implement the requirements of Section II.C, III.A and IV.A of Appendix I, 10CFR Part 50. The release rate specifications for 1-131, 1-133, tritium and radioactive particulates with half-lives greater than eight days are dependent on the existing radionuclide pathways to man in the Unrestricted Area. The pathways which are examined in the development of these calculations are: 1) individual inhalation of airborne radionuclides, 2) deposition of radionuclides onto green leafy vegetation with subsequent consumption by man, 3) deposition onto grassy areas where milk animals and meat producing animals graze with consumption of the milk and meat by man, and 4) deposition on the ground with subsequent exposure of man.

D. Off-gas Treatment Systems Control 2.4.1.A. provides assurance that appropriate portions of the Off-gas Treatment System be used when specified, and provides reasonable assurance that the releases of radioactive materials in gaseous effluents will be kept "as low as is reasonably achievable". This specification implements the requirements of 10CFR50.36a, General Design Criterion 60 of Appendix A to 10CFR Part 50, and design objective Section 11.D of Appendix I to 10CFR Part 50. The specified limits governing the use of appropriate portions of the systems were specified as a suitable fraction of the guide set forth in Sections II.B and II.C of Appendix I, 1 OCFR Part 50, for gaseous effluents.

Control 2.4.1.B. is provided to limit the radioactivity which can be stored in one decay tank. Restricting the quantity of radioactivity contained in each gas storage tank provides assurance that in the event of an uncontrolled release of the tank's contents, the resulting total body exposure to an individual at the Site Boundary will not exceed 20 mrem. A flow restrictor in the discharge line of the decay tanks prevents a tank from being discharged at an uncontrolled rate. In addition, interlocks prevent the contents of a tank from being released with less than 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months of holdup.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Page 12 of 18 The radioactive gaseous effluent monitoring instrumentation is provided to monitor and control, as applicable, the releases of radioactive materials in gaseous effluents during actual or potential releases of gaseous effluents. The Alarm/Trip Setpoint for these instruments will be calculated in accordance with NRC approved methods in the ODCM to ensure that the alarm/trip will occur prior to exceeding the limits of 10CFR Part 20. The FUNCTIONALITY requirements for this instrumentation are consistent with the requirements of General Design Criteria 60, 63, and 64 of Appendix A to 10CFR Part 50.

E. Main Condenser Off-Gas Activity Control 2.5.1 .A. establishes a maximum activity at the steam jet air ejector. Restricting the gross radioactivity rate of noble gases from the main condenser provides reasonable assurance that the total body exposure to an individual at the restricted area boundary will not exceed the limits of 10CFR Part 20 in the event this effluent is inadvertently discharged directly to the environment with minimal treatment. This control implements the requirements of General Design Criteria 60 and 64 of Appendix A to 10CFR Part 50.

F. Containment Venting and Purging Control 2.6.1 requires the containment to be purged and vented through the Standby Gas Treatment System. This provides for iodine and particulate removal from the containment atmosphere.

During outages when the containment is opened for maintenance, the containment ventilation exhaust is directed to the monitored Reactor Building vent. Use of the 2 inch flow path prevents damage to the Standby Gas Treatment System in the event of a loss of coolant accident during purging or venting.

Use of the Standby Gas Treatment System or Reactor Building Plenum and vent flow path for inerting and deinerting operations permits the Control Room Operators to monitor the activity level of the resulting effluent by use of the Offgas Stack or Reactor Building Vent Wide Range Gas Monitors. In the event that the Reactor Building release rate exceeds the Offgas Stack or Reactor Building Vent Wide Range Gas Monitor alarm settings, the monitors will alarm in the Control Room alerting the operators to take actions to limit the release of gaseous radioactive effluents. The alarm settings for the Offgas Stack or Reactor Building Vent Wide Range Gas Monitors are calculated in accordance with the NRC approved methods in the ODCM to ensure that alarms will alert Control Room Operators prior to the limits of 10CFR Part 20 being exceeded.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 I TITLE: GASEOUS EFFLUENTS Revision 11 1 Page 13 of 18 Figure 1 Monticello Nuclear Generating Plant Site Boundary for Gaseous Effluents

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M/arb

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00 a) 00 0 0 0 0 00 00 0 (D E

0~

C:

U0-C:

LU)0C: 0 (13 U) E)

-o -Z U CD

.r a) a) C 0

-~E a) :E ( a)

(D 0 C - E:

(1a cc (

3 0 :3 : 0U~-

L) >0 E CD a): Ui) C CU

-) a)

CC 03.2

0 Uh0 Cn o oC 0

-C -C (13 U) 0m C-CM CC E -- 8 C U) d/)

CU C C U)UM) U)

-0 0D C)

I-3 U) >(> )

aU): a) (D 13 C - aW)0 (D 1 Fu Cc (D3 Ero In F 0i~

a 0 0 3 0 2

U))

U-0~ U ) C

(-3 U)2 0

U) 0 U)

-00 0 C

0) C: 70 CO0 C IL CU) acE U) c 0 a), a) 0 -2 >U U) 0) U) 0U CL)

0) (IS a) WI)(

C 0)

>',0

U)- 0 .E( 0)

IL C3U

0 U) (-3 caE :30 t5CC C ca 0 0(1 (13 CU) -0

( -U) -Co

-:e

~02 Cd) m E LU) a13) L ) C:

C 0 a)CU 0 U (13 U(DM 0~ Of 01 O U) -0 w 0- z w UC)

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Page 15 of 18 Table 2 Radioactive Gaseous Waste Sampling and Analysis Program C4C-) C) C D C) C ) C o x xxx j0.

E Ea Ecu E E EC~

C9 Ca M- u 0D EC cr ru- 0', E ca~~CCI CC U-) CL -1 ccC Z (D c- C V) co lnca Qw M 00 CA C1 C - E C E0 EE "I 0) 2 cn

'a EEo EuT - U~9 L)C~

L.L :E C3 >%U a) ~ 5 w

LD 0 07~i.

C~CUtE 2L 3D 0 CUC oca w~ "M-2Mt o- o 0 :

0a 0 O.C, a) CD Cl C Cn C C 0iM 0 0 0 0 C3 C :C C

caa)L cu 0 C3C CC CL

~CL C 0E ~ U 75 0 aa M/arb

I MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 Page 16 of 18 Table 2 Radioactive Gaseous Waste Sampling and Analysis Program (cont'd)

Cal E Cu 0 )Ca c a) ) -

a)O.

0)0 a)

0) 0)2 z EU)~ 4.)a ai C

0 a) d)->

LL 0

-- U) C Mu C 0) 0 -0 Cu CD 0 0) 0)U 6 a) 03 --U 4a E 0a) (D0.

LO 0- .-Cu 0-C 0 a

_6 Q) * )- a) 'a) > 0_)

0)0 OCu CL5 w Cu:

.0 Mu a) Cr0 C4(

.Cu a)Ca0 0)

-00 (nCU a

ý0 AnC j 22C Cu (DC, 20 V - -0 C

--U).0 (U)0)E cu-0 - C.C n-a 0)C - Z'-

.> E a) a C 0.+ C - nn C0-0 -,' C" 0 0. . Cu ()D E C" 0d) a) MU)

MU3 0 OcU) a) 0) 0 O' ((Do Cu a) M 2-- 0 0) Cu - u 0) .-

=0) 2 Cu

-2 C:)M -~ C =2 0 . n 0) .20 0U) 0)

Cu C

(.0- M (D0)

M-a') 0 t) a) -z 0n Cu .-U-:

>.- > C Cu a') L)J co _a U)

- 0 0). Cu m nn-ý ~0 o a)~ U >~ Cu-Ca 00)0)Cý ( -0,

-E0 Cug 0U V 0) a) Cu L 0

.CA 00 a) 5 c UC) aC- U 0 00)

Cuc Cn a a) -0 C a)

C C56-m 60-,

-3 Lt 02 0 0 CO') C M o:W'- o > ~ CuZ C u IM-0C

.~~~ >-:~U Cu

-cu M E 0 00) wiC/E 0 0

OV 0 oo a)o M)'

C M 0 0 Cu- (D a) Cu) C*) L) -*-.( 0 0. C 0o a)')- C--0 a00 a) .CLa)

.U C

0) CU 0.T a)

> ) L)CU ) (D -0C 0 ,-

CU 0 C

>X. (X U) CDuj MCu2

-C- .2 0Cu" C07C C) ao') (

0 >

U)CC 80) 0- 0 CuC 0 --M

_ CU Cur C a) CoC0 -

U) C 0) C')

0 0

ZZ-"

.C c ~00 Ca- ca -E ci) Cu 0 0 -

-~U) a)

Cu0 Cu -

-0 M CEoMWoGV

.!I - a)

L) C 0C-0 -CuNCu 2 CCCLo cC0 00 o- - O--- N C 0 U) C r C 0-C: 0 a) a) U) L) Cu 0 00)D 0.)

Cu0)2U- a)2.2 C:

0 04- ip 0) 70 0U) 0u~Cu.50 0) Vn a- 0)5C Cu5 C.) C'I .

C 0 ..* 0 O0 a) -0 00).*" C L)

Co 0 =1 M0ML >C

0) (DC, C.)a a) CO Cu .C

0) 00) a)C 0

~ U. t EC

. -o-'Vo-C .0 U CM 0-o "

0=0.0 - 0 E CuM .r- 0)' 0 >

-0 0 d) - Cu

'n. HCu C C C> -0= 0) 0)

U) LO C -a - a) a) 0 N Cu 0) a) -0 a) CL C 0 Ir- -0.J a)~ 0a) a) a) 0 ýE9-CuCCU )-ý 0)q 2-6 a)0 2 C") "0 0. 0. U) CuU) U )

C, =

=U) U- 0

>U0 ~Ca a U)-

a) C') CD Cual .0) 0.. Co C*

a).D Z0 "

-0 0) a- .> C U)a a)0 a'? Cu) Cu>

0) Cu 0~ U) C0

-0) 0 M 1- Mr:

(d 6 n6 0) Lý:

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 IPage 17 of 18 Table 3 Radioactive Gaseous Effluent Monitoring Instrumentation C00 0)

TJ~ a) Cuu3 U) a 7, Ca) M), -a)

0) 0 W - 0 a) oC 0 Ca L)Ca) 0 ",$.G.22o-_._ )

oCE a) jT o 0. 0_

E_

0 U-

~2c' c 0. c 0 .a (n 0) --

CU) C C

-= o'*, R U) -*- U.2 o:C3 0)4 a-). C (D au) 0 CuC n OC C- 2u~~~ o.cn-E -C d) M)

C C a) a) a) a.) )

0 C w ~.2 Q'

w -2

='E cL 0'- -

C.u',3: X-C C:

C.) C. C 2n U)

'F5 0 '6 0 ) Ce - 0 =M0 . . 2-,0

' >, r=t E

C-E -U) Cu 2 2 ý5. 'C2 W C U. :E Cu Cu, M . c) M uU 5-ca C )a >I- o0 cu M

E .o L Ml),

CU

-0MCm'- E >

IL 5 E 3o: .2C C:a a) C') C:

U) V2)

=3 0 0 D080 C-) ~CLCFu CU Ul U C Q o 5.ii2 a) U 0.

CL CLa 0 C0 C 0 2- <2 CL E cn C zu

-o0~

CA 0 CU J'o 00 Cu z

0) >

0 E

Cua 0 C > 'A 4<* " a) .2:-

C'-

C 0 0.

Cu 0 c Cu C-)

CU0 0)U2I cc 0 L) 2 0 U)

a) C) 70-- tu

.- 1:.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 11 1Page 18 of 18 Table 3 Radioactive Gaseous Effluent Monitoring Instrumentation (cont'd) 0)

16 C C 0- 0L-a Un Cd.E Cu ECo a) a, a)

W

,,-E* a, 0-C Ecu 0 aCD a "0 4.- _ 0Cd a, :3 "--

Cu, Cn CuC, CL

.- =

Ca - 0 ~Aco CL LO O D 1 a,"

0Co L a, 0 0-10C C:

C U- 0. a, E a*

CC :2 7 E.o-. E 00 3 Cu C ) CU CC$0

>Cu3 a -.,.2, Cu M Ca CL Cu 0-C( -~ .-

.0 *0 2,:3.

>Z 0-a 0

a,- -C > (DO E U 0 a CD >~2 Co>

0M0 E .E F.--

'E U)3 C5 0- a,; - Cu C:

r- (O 0C > Cu)C

-- a a)C ca ):3 Cd

~0 *-

CU) a-,

O 0 0 Cu > 0 Cu C6

> CD :3 CnC Cu 3 -ý

('

> coC (n M' U) -0.CC >, 0 CDC COd a) c) -~ C) C (D 0

>-'C C a, Cu) -U 02 CU a, 0 C-)

CD -0 CU ---0C 0.-

a,

-d015 (D CC- U a, 0 a) 0 :3 a, ( a)

W--I U)CuC E- a) LL U) >1,Cu a)

U)

E Cd Cd Cd Cd (n Cd 0

._ a), a, a, a, a, a, a E E E E E E E CL 2 2 2 ;e 2 2M -3E C .-- M' Cu Cu Cu Cu Cu Cu C:

a) a, ECu CE-M LL a)0 a) d). C) .

CY C Cd C:

a) 0 a, U.

'a 0- 0 00 0 C " E C0 C

0 C') U- > 0 Ca ::0 0 0-0 E a, a a, "0C Ca) MCU, 3:

a)

M3CO <C~

CL E*:3 a.,( E-:

3_1 C., (/00 C-,

E - =:3 W,"0 U Eu~ E 0 CU=

a-Li.

Cu 0

3 1z~

d) w: Cu M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 IPage 1 of 20 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD OF REVISIO N ............................................... 2 2.0 LIQUID EFFLUENT CALCULATIONS .................................... 3 2.1 Monitor Alarm Setpoint Determination ............................. 3 2.2 Liquid Effluent Concentration - Compliance With 10CFR20 ........... 11 2.3 Liquid Effluent Doses - Compliance With 10CFR50 .................. 12 2.4 R eferences ..................................................... 15 Figure 1 Radwaste Clean, Dirty, Solid Waste ............................... 16 Table 1 Liquid Source Term s ............................................. 17 Table 2 Aij Values for the Monticello Nuclear Generating Plant (m rem /hr per m C i/m l) ............................................ 18 0

Prepared By:

i Reviewed By:

OC Final Review Meeting: Date:

Approved By Plant Manager: Date:

3087 (DOCUMENT CHANGE, HOLD, AND COMMENT FORM) incorporated:

Resp Supv: CHEM lAssoc Ref: CHEM-I SR: N Freq: 2 yrs ARMS: ODCM-04.01 Doc Type: 7030 1Admin Initials: Date:

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MONTICELLO NUCLEAR GENERATING PLANT TITLE: LIQUID EFFLUENT CALCULATIONS I ODCM-04.01 I Revision 2 I Page 2 of 20 II 1.0 RECORD OF REVISION Revision No. Date Reason for Revision 1 October - 2000 Moved previous ODCM-02.01 (LIQUID EFFLUENTS) into this section and renamed this section "LIQUID EFFLUENTS CALCULATIONS" to facilitate moving the Radiological Effluents Tech Specs to the ODCM.

Removed dilution flow from setpoint calculations for the Service Water and Turbine Normal Drain Monitors to ensure the setpoints are valid for all plant modes.

Revised the Table 1 MPCi values to 10 times the concentration values of 10CFR20&1001-20.2402, Table 2, Column 2.

2 November - 2001 Added clarification of use of computer program LIQDOS to section 2.0. Changed Turbine Building Normal Drain Sump to Turbine Building Normal Waste Sump.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 3 of 20 2.0 LIQUID EFFLUENT CALCULATIONS It is MNGP's policy to make no routine liquid releases, this section is used to:

A. Determine alarm setpoints for liquid monitors; B. Determine that liquid concentrations in effluents are below 10 times the allowable concentrations given in 10CFR20; C. Calculate dose commitments to individuals; and D. Project doses for the next month due to liquid radioactive effluents.

E. Enter and compute liquid effluent doses using the LIQDOS Program if liquid effluent releases are made.

2.1 Monitor Alarm Setpoint Determindtion Monitor alarm setpoints are determined to assure compliance with Tech Specs.

The setpoints indicate if the concentration of radionuclides in the liquid effluent at the site boundary exceeds 10 times the concentrations specified in Appendix B, Table 2, Column 2 of 10CFR20.1001-20.2402 for radionuclides other than dissolved or entrained noble gases. The setpoints will also assure that a concentration of 2 x 10-4 gCi/mI for dissolved or entrained noble gases is not exceeded.

Monitor alarm setpoints are calculated monthly. The calculation is performed by the LIQDOS computer program. The calculation is based on radionuclides detected in effluent from the release point during the previous month in the following manner:

A. Ifthere were no detectable radionuclides during the previous month, the BWR GALE Code source terms (Table 1)(2) will be used as the basis for the monthly release rate.

B. Ifthe calculated setpoint is less than the existing monitor setpoint, the setpoint will be reduced to the new lower value.

C. Ifthe calculated setpoint is greater than the existing monitor setpoint, the setpoint may remain at the lower value or be increased to the new value.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 4 of 20 2.1.1 Radwaste Discharge Line Monitor The following method applies to liquid releases from the plant via the discharge canal when determining the high-high alarm setpoint for the Liquid Radwaste Effluent Monitor during all operational conditions. The radwaste discharge flowrate is assumed to be maintained relatively constant at or near the maximum Liquid Radwaste Pump design flowrate. Circulating water is used for dilution because the setpoint is applied at the liquid effluent site boundary (ODCM-02.01, Figure 1).

A. Determine the "mix" (radionuclides and composition) of the liquid effluent.

1. Determine the liquid source terms that are representative of the "mix" of the liquid effluent. Liquid source terms are the total curies of each isotope released during the previoup month. Table 1 source terms may be used if there have been no liquid releases.

2. Determine Si (the fraction of the total radioactivity in the liquid effluent comprised by radionuclide i) for each individual radionuclide in the liquid effluent.

Si = _A Ai2. 2.1 i where Ai = The radioactivity of radionuclide i in the liquid effluent from Table 1.

B. Determine Ct, the maximum acceptable total radioactivity concentration of all radionuclides in the liquid effluent prior to dilution (gCi/ml).

Ct F

= F2.1-2 f I_ Si i MPCi where F = Dilution water flowrate (gpm):

= Current circulating water flowrate or 240,000 gpm from two circulating water pumps, whichever is less.

f = The maximum acceptable discharge flowrate prior to dilution (gpm);

50 gpm from the Liquid Radwaste Pump (3);

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 5 of 20 and MPCi = The liquid effluent radioactivity concentration limit for radionuclide i (gCi/ml) from Table 1.

C. Determine Cm, the maximum acceptable total radioactivity concentration of the radionuclides (minus tritium) in the liquid discharge prior to dilution (gCi/ml).

Cm = Ct -(CtSH) 2.1-3 where SH The fraction of the total radioactivity in the liquid effluent comprised of tritium and other radionuclides that do not emit gamma or x ray radiation.

D. Determine C.R., the calculated monitor count rate above background attributed to the radionuclides (ncps).

C.R. =E 2.1-4 E

where E The detection efficiency of the monitor (gCi/cc/cps) from Plant Chemistry Surveillance procedures.

E. The monitor high-high alarm setpoint above background (ncps) should be set at or less than the C.R. value. Since only one tank can be released at a time, adjustment of this value is not necessary to compensate for releases from more than one source.

2.1.2 Discharge Canal Monitor The following method determines the high-high alarm setpoint for the Discharge Canal Monitor during all operational conditions.

A. Determine the "mix" (radionuclides and composition) of all liquids released into the discharge canal.

1. Determine the liquid source terms that are representative of the "mix" of all liquid released into discharge canal.

Liquid source terms are the total curies of each isotope released during the previous month. Table 1 source terms may be used ifthere have been no liquid releases.

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MONTICELLO NUCLEAR GENERATING PLANT QDCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 6 of 20

2. Determine Si, the fraction of the total radioactivity of all liquids released into the discharge canal comprised by radionuclide i for each individual radionuclide released into the discharge canal.

Si A Ai2.-

= ZT 2.1-5 where Ai= The radioactivity of radionuclide i released into the discharge canal.

B. Determine Cd, the maximum acceptable total radioactivity concentration of all radionuclides released into the discharge canal (pCi/ml).

Cd 1

= 12.1-6 MPCi where MPCi = The liquid effluent radioactivity concentration limit for radionuclide i (gCi/ml) from Table 1.

C. Determine Cm, the maximum acceptable total radioactivity concentration of the radionuclides (minus tritium) released into the discharge canal (liCi/ml).

Cm = Cd -(CdSH) 2.1-7 where SH The fraction of the total radioactivity released into the discharge canal comprised of tritium and other radionuclides that do not emit gamma or x-ray radiation.

D. Determine C.R., the calculated monitor count rate above background attributed to the radionuclides (ncps).

C.R. CM 2.1-8 E

where E = The detection efficiency of the monitor (RCi/cc/cps) from Plant Chemistry Surveillance procedures.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 7 of 20 E. The monitor high-high alarm setpoint above background (ncps) should be set at or less than the C.R. value.

2.1.3 Service Water Discharge Pipe Monitor Dilution flow is not used for the service water discharge pipe monitor setpoint determination to ensure the setpoint is valid for all modes of plant operation. The following method determines the high-high alarm setpoint for the Service Water Discharge Pipe Monitor during all operational conditions.

A. Determine the "mix" (radionuclides and composition) of the service water effluent.

1. Determine the liquid source terms that are representative of the "mix" of the service water effluent. Liquid source terms are the total curies of each isotope released during the previous month. Table 1 source terms may be used if there have been no liquid releases.

2. Determine Si the fraction of the total radioactivity in the service water effluent comprised by radionuclide i, for each individual radionuclide in the liquid effluent.

Si Am 2.1-9 Zi where Ai= The radioactivity of radionuclide i in the service water effluent.

B. Determine Ct, the maximum acceptable total radioactivity concentration of all radionuclides in the service water effluent prior to dilution (gCi/ml).

1 2.1-10 MPCi where MPCi = The liquid effluent radioactivity concentration limit for radionuclide i (gCi/ml) from Table 1.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 8 of 20 C. Determine Cm, the maximum acceptable total radioactivity concentration of the radionuclides (minus tritium) in the service water prior to dilution (gCi/ml).

Cm = Ct - (CtSH) 2.1-11 where SH The fraction of the total radioactivity in the service water effluent comprised of tritium and other radionuclides that do not emit gamma or x-ray radiation.

D. Determine C.R., (the calculated monitor count rate above background attributed to the radionuclides (ncps)).

C.R. =E 2.1-12 E

where E The detection efficiency of the monitor (gCi/cc/cps) from Plant Chemistry Surveillance procedures.

E. The monitor high-high alarm setpoint above background (ncps) should be set at or less than the C.R. value.

2.1.4 Turbine Building Normal Waste Sump Monitor Dilution flow is not used for the Turbine Building Normal Waste Sump Monitor setpoint determination to ensure the setpoint is valid for all modes of plant operation. The following method determines the high-high alarm setpoint for the Turbine Building Normal Waste Sump Monitor during all operational conditions.

A. Determine the "mix" (radionuclides and composition) of the TBNWS effluent.

1. Determine the liquid source terms that are representative of the "mix" of the TBNWS effluent. Liquid source terms are the total curies of each isotope released during the previous month. Table 1 source terms may be used if there have been no liquid releases.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 9 of 20

2. Determine Si, the fraction of the total radioactivity in the TBNWS effluent comprised by radionuclide i, for each individual radionuclide in the liquid effluent.

- A. 2.1-13

=YE Ai where Ai = The radioactivity of radionuclide i in the TBNWS effluent.

B. Determine Ct, the maximum acceptable total radioactivity concentration of all radionuclides in the TBNWS effluent prior to dilution (jiCi/ml).

Ct 1 Ct= 2.1-14 i MPCi MPCi The liquid effluent radioactivity concentration limit for radionuclide i (gCi/ml) from Table 1.

C. Determine Cm, the maximum acceptable total radioactivity concentration of the radionuclides (minus tritium) in the TBNWS prior to dilution (pCi/ml).

Cm = Ct - (CtSH) 2.1-15 where SH The fraction of the total radioactivity in the TBNWS effluent comprised of tritium and other radionuclides that do not emit gamma or x-ray radiation.

D. Determine C.R., the calculated monitor count rate above background attributed to the radionuclides (ncps).

C.R. =E 2.1-16 where E The detection efficiency of the monitor (gCi/cc/cps) from Plant Chemistry Surveillance procedures.

E. The monitor high-high alarm setpoint above background (ncps) should be set at or less than the C.R. value.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 10 of 20 2.1.5 Multiple Release Points The discharge canal monitor, service water discharge and TBNWS line I monitor are provided to detect unplanned or accidental releases. All normal releases are monitored by the radwaste discharge line monitor.

There are, therefore, no multiple release points and monitor settings do not have to be reduced to account for multiple releases.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 11 of 20 2.2 Liquid Effluent Concentration - Compliance With 10CFR20 In order to demonstrate compliance with 10CFR20, the concentrations of radionuclides in liquid effluents are determined and compared to 10 times the concentrations specified in Appendix B, Table 2, Column 2 to 10CFR20.1001-20.2402. The concentration of radioactivity in effluents prior to dilution is determined. The concentration in diluted effluent is calculated by the LIQDOS computer program.

2.2.1 Batch Releases A. Prerelease The radioactivity content of each batch release is determined prior to release. MNGP will show compliance with Tech Specs (TS) in the following manner:

The concentration of the various radionuclides in theolbatch release prior to dilution flow to obtain the concentration at the unrestricted area. This calculation is shown in the following equation:

Conci = CR 2.2-1 MDF where Conci = concentration of radionuclide i at the unrestricted area, (ltCi/ml);

Ci concentration of radionuclide i in the potential batch release, (gCi/ml);

R = release rate of the batch, (gpm);

MDF minimum dilution flow, (gpm).

The projected concentration in the unrestricted area is compared to 10 times the concentrations specified in Appendix B, Table 2, Column 2 to 10CFR20.1001-20.2402. These concentrations are given in Table 1. Before a release may occur, Equation 2.2-2 must be met for all nuclides. For the MNGP the MDF is 240,000 gpm. The maximum release rate is 50 gpm.

E Conci < 1 2.2-2 iMPCi where MPCi = maximum concentration of radionuclide i from Table 1, (ptCi/ml).

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 12 of 20 2.3 Liquid Effluent Doses - Compliance With 10CFR50 Doses resulting from liquid effluents are calculated monthly to show compliance with 10CFR 50. These calculations are performed by the LIQDOS computer program. A cumulative summation of total body and organ doses for each calendar quarter and calender year is maintained as well as projected doses for the next month.

2.3.1 Determination of Liquid Effluent Dilution To determine doses from liquid effluents the near field average dilution factor for the period of release must be calculated. This dilution factor must be calculated for each bath release. The dilution factor is determined by:

Rk 2.3-1 Fk= X ADFk where Rk = release rate of the batch during time period k, (gpm);

and ADFk = actual dilution flow during the time period of release k, (gpm).

The value of X is the site specific value for the mixing effect of the MNGP discharge structure. This value is 1.0 for MNGP while operating in the once-through cooling mode. Although not expected to occur, if radioactive material is discharged while operating in the recycle mode, this value may be 1.86. (4) 2.3.2 Dose Calculations The dose contribution from the release of liquid effluents is calculated monthly. The dose contribution is calculated using the following equation:

Dj = -AijtkCikFk 2.3-2 ki where Dj the dose commitment to the total body or any organ, from the liquid effluents for the 31 day period, (mrem);

Cik the average concentration of radionuclide, i, in undiluted liquid effluent for release k, (ýiCi/ml);

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 13 of 20 Aij = the site related ingestion dose commitment factor to the total body or any organ j for each identified principal gamma and beta emitter, (mrem/hr per pCi/ml);

Fk = the near field average dilution factor for Cik during liquid effluent release k, as defined in Equation 2.3-1, and tk = the length of time for release k, (hours).

The dose factor AN was calculated for an adult for each isotope using the following equation:

Aij= 1.14 x 105 (730/Dw + 21 BFi) DFij 2.3-3 where 1.14 x 105 = 10 6 pCi 10 3mI 1_yr

[iCi liter 8760 hr 730 = adult water consumption rate, (liters/yr);

Dw = dilution factor from the near field area to the potable water intake for adult water consumption; 21 = adult fish consumption, (kg/yr);

BFi = bioaccumulation factor for radionuclide i in fish from Table A-1 of Regulatory Guide 1.109 Rev. 1, (5) (pCi/kg per pCi/liter);

DFij = dose conversion factor for radionuclide i for adults for particular organ j from Table E-11 of Regulatory Guide 1.109 Rev. 1, (mrem/pCi).

The Ai values for an adult at the MNGP are given in Table 2. The far field dijution factor, Dw for the MNGP is 7:1 for the nearest downstream water supply in St. Paul. This value was determined by assuming that effluents are completely mixed in 50% of the Mississippi River flow (7431 cfs at Anoka, MN). (6)

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 14 of 20 2.3.3 Cumulation of Doses Doses calculated monthly are summed for comparison with quarterly and annual limits. The monthly results should be added to the doses cumulated from the other months in the quarter of interest and in the year of interest. This summation is performed by the LIQDOS computer program.

For the quarter:

D < 1.5 mrem total body 2.3-4 D < 5 mrem any organ 2.3-5 For the Calendar Year, D < 3 mrem total body 2.3-6 D < 10 mrem any organ 2.3-7 The quarterly limits given above represent one half of the annual design objective.( 7) Ifthese quarterly or annual limits are exceeded, a special report should be submitted stating the reason and corrective action to be taken. This report will include results of analysis of Mississippi River water and an analysis of possible impacts through the drinking water pathway. Iftwice these limits are exceeded, a special report will be submitted showing compliance with 40CFR1 90. (8) 2.3.4 Projection of Doses Anticipated doses resulting from the release of liquid effluents are projected monthly. Ifthe projected doses for the month exceed 2% of Equation 2.3-6 or 2.3-7, additional components of the liquid radwaste treatment system will be used to process waste. The projected doses are calculated using Equation 2.3-2. This calculation is performed by the LIQDOS computer program. The dilution factor, Fk, is calculated by replacing the term ADFk in Equation 2.3-1 with the term MDF from Equation 2.2-1.

The total source term utilized for the most recent dose calculation should be used for the projections unless information exists indicating that actual releases could differ significantly in the next month. Inthis case, the source term would be adjusted to reflect this information and the justification for the adjustment noted. This adjustment should account for any radwaste equipment which was operated during the previous month that could be out of service in the coming month.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 15 of 20 2.4 References

1. USNRC, Title 10, Code of Federal Regulation, Part 20.1001-20.2402, "Standards for Protection Against Radiation", Appendix B, Table II, Column 2.

2. NSP - Monticello Nuclear Generating Plant, Appendix I Analysis -

Supplement No. 1 - Docket No. 50-263, Table 2.1-2.

3. NSP - Monticello Nuclear Generating Plant, Appendix I Analysis -

Supplement No. 1 - docket No. 50-263, Table 2.1-1.

4. Boegli, J.S., et. al. Eds, Section 4.3 in "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants,. NUREG-01 33, 1978, NTIS, Springfield, VA.

5. USNRC, Regulatory Guide 1.109. "Calculation of Annual Doses to Man from Routine Releases of Reactpr Effluents for the Purpose of Evaluating Compliance with 10CFR50, Appendix I", Rev. 1, Oct. 1977, USNRC, Washington, DC.

6. NSP - Monticello Nuclear Generating Plant, Final Draft Safety Analysis Report - Amendment 4, Question 3.3, and Amendment 8 in entirety.

7. USNRC, Title 10, Code of Federal Regulation, Part 50, "Domestic Licensing of Production and Utilization Facilities", Appendix I, "Numerical Guides for Design Objectives and Limiting Conditions for Operation to Meet the Criterion As Low as is Reasonably Achievable for Radioactive Material in Light-Water-Cooled Nuclear Power Reactor Effluents".

8. EPA, Title 40, Code of Federal Regulations, Part 190 "Environmental Radiation Protection Standards for Nuclear Power Operations".

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 16 of 20 Figure 1 Radwaste Clean, Dirty, Solid Waste I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 1Page 17 of 20 Table 1 Liquid Source Terms Radioactivity Ai MPCj Radionuclide Ci/yr* RCi/ml**

H-3 2.1E 1 1E-2 Na-24 1.7E-1 5E-4 Mn-54 2.6E-3 3E-4 Mn-56 2.7E-1 7E-4 Fe-59 8.1E-4 1 E-4 Co-58 9.3E-3 2E-4 Co-60 2.OE-2 3E-5 Cu-64 5.4E-1 2E-3 Zn-65 5.3E-3 5E-5 Zn-69m 3.7E-2 6E-4 Br-83 1.4E-2 9E-3 Sr-89 2.8E-3 8E-5 Sr-90 1.7E-4 5E-6 Sr-91 6.4E-2 2E-4 Sr-92 5.8E-2 4E-4 Y-92 1.OE-1 4E-4 Y-93 6.6E-2 2E-4 Mo-99 5.OE-2 2E-4 1-131 1.3E-1 1 E-5 1-132 1.3E-1 1 E-3 1-133 4.OE-1 7E-5 1-134 6.4E-2 4E-3 1-135 2.5E-1 3E-4 Cs-1 34 8.3E-2 9E-6 Cs-1 36 2.6E-2 6E-5 Cs-1 37 1.2E-1 1E-5 Cs-1 38 1.5E-1 4E-3 Ba-140 1.1 E-2 8E-5 La-141 5.7E-3 5E-4 Ce-141 8.5E-4 3E-4 Ce- 144 5.3E-3 3E-5 Np-239 1.7E-1 2E-4 Noble Gases Total 2.40E1

These source terms were calculated in accordance with NUREG-0016 by using the USNRC "GALE" Code:

-- MPCi Values are 10 times the concentration values of 10CFR20.1001 - 20.2402 Table 2 Column 2.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 18 of 20 Table 2 Aij Values for the Monticello Nuclear Generating Plant (mrem/hr per gCi/ml)

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 19 of 20 Table 2 Aij Values for the-Monticello Nuclear Generating Plant (mrem/hr per jxCi/ml) (cont'd)

Nuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI 39 Y-90 6.90E-01 O.OOE 00 1.35E-02 0.00E 00 0.00E 00 0.00E 00 7.32E 03 39 Y-91 m 6.52E-03 0.OOE 00 2.53E-04 0.OOE 00 0.OOE 00 0.OOE 00 1.92E-02 39Y-91 1.01E 01 O.OOE 00 2.70E-01 0.OOE 00 0.OOE 00 0.OOE 00 5.57E 03 39 Y-92 6.06E-02 0.OOE 00 1.77E-03 0.OOE 00 0.OOE 00 0.OOE 00 1.06E 03 39Y-93 1.92E-01 0.OOE 00 5.31E-03 0.OOE 00 0.OOE 00 0.OOE 00 6.1OE 03 40Zr-95 6.02E-01 1.93E-01 1.31E-01 0.OOE 00 3.03E-01 0.OOE 00 6.11E 02 40 Zr-97 3.32E-02 6.71 E-03 3.07E-03 0.OOE 00 1.01 E-02 0.OOE 00 2.08E 03 41 Nb-95 4.47E 02 2.49E 02 1.34E 02 0.OOE 00 2.46E 02 0.OOE 00 1.51E 06 42 Mo-99 0.OOE 00 1.54E 02 2.94E 01 0.OOE 400 3.50E 02 0.OOE 00 3.58E 02 43Tc-99m 1.13E-02 3.34E-02 4.25E-01 0.OOE 00 5.07E-01 1.63E-02 1.97E 01 43Tc-101 1.21E-02 1.75E-02 1.72E-01 0.OOE 00 3.15E-01 8.94E-03 5.26E-14 44Ru-103 6.63E 00 0.OOE 00 2.86E 00 0.OOE 00 2.53E 01 0.OOE 00 7.74E 02 44 Ru-105 5.52E 01 0.OOE 00 2.18E-01 0.OOE 00 7.13E 00 0.OOE 00 3.38E 02 44Ru-106 9.85E 01 0.OOE 00 1.25E 01 0.OOE 00 1.90E 02 0.OOE 00 6.38E 03 47Ag-110m 2.78E 00 2.57E 00 1.53E 00 0.OOE 00 5.06E 00 0.OOE 00 1.05E 03 52Te-125m 2.60E 03 9.41E 02 3.48E 02 7.81E 02 1.06E 04 0.OOE 00 1.04E 04 52Te-127m 6.56E 03 2.35E 03 8.OOE 02 1.68E 03 2.67E 04 0.OOE 00 2.20E 04 52 Te-1 27 1.07E 02 3.83E 01 2.31E 01 7.90E 01 4.34E 02 0.OOE 00 3.42E 03 52Te-129m 1.11E 04 4.16E 03 1.76E 03 3.83E 03 4.65E 04 0.OOE 00 5.61E 04 52Te-129 3.04E 01 1.14E 01 7.42E 00 2.34E 01 1.23E 02 0.OOE 00 2.30E 01 52Te-131m 1.68E 03 8.20E 02 6.83E 02 1.30E 03 9.31E 03 0.OOE 00 8.14E 04 52Te-131 1.81E 01 7.98E 00 6.03E 00 1.57E 01 8.37E 01 0.OOE 00 2.70E 00 52Te-132 2.44E 03 1.58E 03 1.48E 03 1.75E 03 1.52E 04 0.OOE 00 7.47E 04 531-130 3.61E 01 1.07E 02 4.21E 01 9.03E 03 1.66E 02 0.OOE 00 9.18E 01 531-131 1.99E 02 2.84E 02 1.63E 02 9.32E 04 4.88E 02 0.OOE 00 7.50E 01 531-132 9.70E 00 2.60E 01 9.08E 00 9.08E 02 4.13E 01 0.OOE 00 4.88E 00 531-133 6.79E 01 1.18E 02 3.60E 01 1.74E 04 2.06E 02 0.OOE 00 1.06E 02 531-134 5.07E 00 1.38E 01 4.92E 00 2.39E 02 2.19E 01 0.OOE 00 1.20E-02 531-135 2.12E 01 5.54E 01 2.05E 01 3.66E 03 8.89E 01 0.OOE 00 6.26E 01 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 20 of 20 Table 2 Aij Values for the Monticello Nuclear Generating Plant (mrem/hr per IiCi/ml) (cont'd)

Nuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI 55Cs-134 2.99E 05 7.1OE 05 5.81E 05 0.OOE 00 2.30E 05 7.63E 04 1.24E 04 55Cs-136 3.12E 04 2.23E 05 8.88E 04 0.00E 00 6.86E 04 9.41E 03 1.40E 04 55Cs-137 3.83E 05 5.23E 05 3.43E 05 0.OOE 00 1.78E 05 5.90E 04 1.01E 04 55Cs-138 2.65E 02 5.23E 02 2.59E 02 0.OOE 00 3.84E 02 3.80E 01 2.23E-03 56Ba-139 2.08E 00 1.48E-03 6.1OE-02 0.OOE 00 1.39E-03 8.41E 04 3.69E 00 56Ba-140 4.36E 02 5.47E-01 2.85E 01 0.OOE 00 1.86E-01 3.13E 01 8.97E 02 56Ba-141 1.01E 00 7.64E-04 3.41E-02 0.OOE 00 7.1OE-04 4.34E 04 4.77E-10 56 Ba-1 42 4.57E-01 4.70E-04 2.88E-02 0.OOE 00 3.97E-04 2.66E 04 6.44E-1 9 57 La-1 40 1.79E-01 9.04E-02 2.39E-02 0.OOE 00 0.OOE 00 0.OOE 00 6.64E 03 57La-142 9.18E-03 4.18E-03 1.04E-03 0.OOE 00 0.OOE 00 0.OOE 00 3.05E 01 58Ce-141 1.34E-01 9.04E-02 1.03E-02 0.OOE 00 4.20E-02 0.OOE 00 3.46E 02 58Ce-143 2.36E-02 1.74E 01 1.93E-03 0.OOE 00 7.67E-03 0.OOE 00 6.51E 02 58Ce-144 6.97E 00 2.91E 00 3.74E-01 0.OOE 00 1.73E 00 0.OOE 00 2.36E 03 59 Pr-1 43 6.60E-01 2.65E-01 3.27E-02 0.OOE 00 1.53E-01 0.OOE 00 2.89E 03 59Pr-144 2.16E-03 8.97E-04 1.1OE-04 0.OOE 00 5.06E-04 0.OOE 00 3.11E-14 60Nd-147 4.51E-01 5.22E-01 3.12E-02 0.OOE 00 3.05E-01 0.OOE 00 2.50E 04 74W-187 2.97E 02 2.48E 02 8.68E 01 0.OOE 00 0.OOE 00 0.OOE 00 8.13E 04 93 Np-239 4.26E-02 4.19E-03 2.31 E-03 0.OOE 00 1.31 E-02 0.OOE 00 8.60E 02 I/plr

ITITLE:

MONTICELLO NUCLEAR GENERATING PLANT GASEOUS EFFLUENT CALCULATIONS ODCM-05.01 Revision 7 Page 1 of70 Approval: PCR 01305579 1 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECORD OF REVISION ..................................................................................... 3 2.0 GASEOUS EFFLUENT CALCULATIONS ........................................................... 4 2.1 Monitor Alarm Setpoint Determination ....................................................... 4 2.2 Gaseous Effluent Dose Rate - Compliance With Technical Specifications.. 12 2.3 Gaseous Effluents - Compliance With 10CFR50 ..................................... 15 2.4 Summary of EBARR Computer Program ................................................. 21 2.5 Dose Parameters for Radioiodines, Particulates and Tritium ................... 26 2 .6 R e fe re n ce s ................................................... ............................................... 3 8 Figure 1 Gaseous Radwaste ....................................................................................... 40 Figure 2 V entilation S ystem .......................................................................................... 41 Table 1 Gaseous Source Terms(3) Ai, Ci/yr* ............................................................. 42 Table 2 Dose Factors and Constants for the Total Body and Skin for Gaseous Radionuclides .............................................................................................. . . 43 Table 3 Air Ejector Monitor Trip Setting and Storage Tank Contents Storage Tank Activity in Dose Equivalent Curies Xe-1 33 12 Hours After Completion of Tank Fill Release Rate Set to 1.00 of Maximum Trip Setting ........................ 45 Table 4 Child Critical Organ Dose Parameters for Radionuclide i for the Inhalation P a thwa y ....................................................................................................... . . 48 Table 5 Dose Factors for Noble Gases and Daughters That May Be Detected in G aseous Effl uents ......................................................................................... 49 Table 6 Dose Parameters for Finite Evaluated Plumes for the Critical Boundary Location 0.51 mi from the Stack in the SSE Sector ...................................... 50 Table 7 Ri Values for the Monticello Nuclear Generating Plant Ground Pathway ......... 51 Table 8 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Adult Age Group ............................................................................ 52 Table 9 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Teen Age Group ............................................................................ 53 Table 10 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Child Age Group ............................................................................ 54 Table 11 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway A dult A ge G roup .......................................................................................... . . 55 Table 12 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway T een A ge G roup ............................................................................................ 56 M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1Page 2 of 70 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS (Cont'd)

SECTION PAGE Table 13 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway C hild A ge G roup .......................................................................................... . . 57 Table 14 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway A dult A ge G roup .......................................................................................... . . 58 Table 15 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway T een A ge G roup ............................................................................................ 59 Table 16 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway C hild A ge G roup .......................................................................................... . . 60 Table 17 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Infa nt A ge G roup ........................................................................................ . . 61 Table 18 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway A dult A ge G roup ................................... 0....................................................... . . 62 Table 19 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway T een A ge G roup ............................................................................................ 63 Table 20 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway C hild A ge G roup .......................................................................................... . . 64 Table 21 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Infant A ge G ro up ....................................................................................... . . 65 Table 22 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Adult A ge G roup .......................................................................................... . . 66 Table 23 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway T een Age G roup ............................................................................................ 67 Table 24 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway C hild Age G roup .......................................................................................... . . 68 Table 25 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Infant A ge G roup ........................................................................................ . . 69 Table 26 Table of Radioisotope Constants Used by EBARR ....................................... 70 M/kab

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: I GASEOUS EFFLUENT CALCULATIONS Revision 7 Pacie 3 of 70 1.0 RECORD OF REVISION Revision No. Date Reason for Revision December - 1998 Changed word "waste" to "effluent" in section 1.0, changed 1st sentence in section 2.0 to exact wording in T.S., added section 3.0 to reference section 1.0 word change to LAR 39.

October - 2000 Moved previous ODCM-03.01 (GASEOUS EFFLUENTS) into this section and renamed this section "GASEOUS EFFLUENTS CALCULATIONS" to facilitate moving the Radiological Effluents Tech Specs to the ODCM.

Moved associated figures and tables into this section to make the section easier to use. Removed references to the unused MIDAS System. Revised references to the X/Q and D/Q values now located in Appendix A.

November - 2001 Replaced maximum acceptable flow rate in equation 2.1-9 (85.5 cfm) to the effluent flowrate at the Offgas Pretreatment Monitor.

January - 2004 Fixed typographical errors on equations 2.1-4, 2.5-4 and 2.5-5.

Removed plant activity uptake through soil factors from equations 2.5-5, 2.5-7 and 2.5-9. This term models plant activity uptake through the soil. Experience has shown this to be an insignificant pathway and the NRC drops it from consideration in NUREG 0133.

Removed reference to 10CFR20 in sections 2.0.B., 2.2.1, 2.2, 2.2.1 and 2.2.2.

With the revision to 10CFR20, the connection between the 400 and 3000 mRem/yr dose rate limits for gaseous effluent monitor alarm setpoints was broken. These limits still exist, but they are Technical Specification only requirements.

Moved sentence about real time x/Q and MIDAS XP computer program in section 2.2.3 to section 2.2.2 where it belongs.

Added sentence about historical atmospheric dispersion factors (D/Q) being used to determine critical receptor to section 2.2.3.

March - 2007 Changed references for "10CFR100" to "10CFR50.67" as required by License Amendment 148 (Alternate Source Term).

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I MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Paae 4 of 70 1.0 RECORD OF REVISION (Conti Revision No. Date Reason for Revision 6 May, 2007 Added note to Table 1 stating that the Source terms were calculated in accordance with NUREG-0016 by using USNRC "GALE" Code. Made various format and typographical error corrections. ~1~

7 March, 2012 Editorial corrections to several equations as a result of SAR Action (01301985). Added I~

Section 2.5.3 and updated Tables 7 through I QQ~

2.0 GASEOUS EFFLUENT CALCULATIONS 21 for Carbon-14 dose factors.

I This section describes the procedures used by MNGP to:

A. Determine alarm point settings for gaseous effluent monitors; B. Determine that dose rates at the site boundary from noble gases, particulates, and iodines remain below the limits of Technical Specifications, and C. Determine that the total dose from airborne effluents for the year is within the limits of Appendix I of 10CFR50.

The computations of this section may be done manually, by use of computer programs which implement these algorithms.

2.1 Monitor Alarm Setpoint Determination This procedure determines the effluent monitor alarm setpoint that indicates if the dose rate at or beyond the site boundary due to noble gas radionuclides in the gaseous effluent released from the site exceeds 500 mrem/year to the whole body or exceeds 3000 mrem/year to the skin. Accident monitors are set to limit effluent releases to a small fraction of the limits specified in 1 OCFR50.67. In addition this section calculates the maximum activity permitted in each off-gas storage tank.

Monitor high alarm or isolation setpoints are established in one of the following ways:

1. Monthly calculation of setpoints using the methodology of Section 2.1.1 for noble gas nuclides in releases during the previous month.

2. Prior to each containment purge, recalculation of the setpoint using the methodology of Section 2.1.1 based on the sample taken prior to purging.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 5of70 2.1.1 Effluent Monitors Monitor alarm setpoints are determined to assure compliance with Technical Specifications. The setpoints indicate that the dose rate at or beyond the site boundary due to noble gas radionuclides in the gaseous effluent released from the site exceeds 500 mrem/year to the whole body or exceeds 3000 mrem/year to the skin.

Monitor alarm setpoints are calculated for the Reactor Building Ventilation Plenum Noble Gas monitors and the Stack Noble Gas monitors once per month. These calculations are based on the noble gas isotopes in releases made during the previous month. The calculations are performed by the DOSGAS computer program.

In addition, prior to containment purging, the monitor setpoint for the monitor release point is recalculated. This calculation is performed by the DWCAL computer program. The monitor setpoint is determined as follows:

1. If no detectable noble gas activity is found in the purge sample, the values used as the basis for the alarm point setting are from the column, "Drywell purging" in Table 1, Gaseous Source Terms.

2. If any calculated setpoint is less than the existing monitor setpoint, the setpoint is reduced to the new value.

3. If the calculated setpoint is greater than the existing monitor setpoint, the setpoint may remain at the lower value or be increased to the new value.

4. The setpoint during purging may not be increased above the setpoint determined for continuous releases, however.

Except for containment inerting and deinerting, all containment purging and venting is done via the standby gas treatment system and plant stack. Containment inerting and deinerting releases are made via the Reactor Building vent. The small amount of containment atmosphere released by the containment sampling system on a continuous basis is not considered a venting operation.

A. Reactor Building Vent Alarm Setpoint The following method applies to gaseous releases via the Reactor Building vent when determining the high-high alarm setpoint for the Reactor Building Vent Noble Gas Monitor. This method is applied to both continuous releases and batch releases (containment inerting and deinerting).

1. Determine the "mix" (noble gas radionuclides and composition) of the gaseous effluent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 6 of 70

a. Determine the gaseous source terms that are representative of the "mix" of the gaseous effluent.

Gaseous source terms are the total curies of each noble gas released during the previous month or a representative analysis of the gaseous effluent.

Table 1 source terms may be used if the Reactor Building releases for the previous month were below the lower limits of detection ( LLD), or, in the case of inerting and deinerting releases, no detectable activity was found in the grab sample taken prior to purging.

b. Determine Si, the fraction of the total radioactivity in the gaseous effluent comprised by noble gas radionuclide "i", for each individual noble gas radionuclide in the gaseous effluent.

Y Si=

Ai Y Ai 2.1-1 where Ai The radioactivity of noble gas radionuclide "i" in the gaseous effluent.

2. Determine Qt, the maximum acceptable total release rate of all noble gas radionuclides in the gaseous effluent (piCi/sec), based upon the whole body exposure limit (500 mrem/yr).

500 Qt = (X/Q)v vKiSi 2.1-2 where (x,/Qt The highest calculated average relative concentration of effluents released via the Reactor Building vent for any area at or beyond the site boundary for all sectors (sec/M3 ) from Appendix A, Table 3. For purge releases, substitute the value ob-tained from Chemistry Manual Procedure 1.06.07 (ATMOSPHERIC DISPERSION DETERMINATION).

Ki = The total whole body dose factor due to gamma emissions from noble gas radionuclide "i" (mrem/year/gCi/m3 ) from Table 2.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 7 of 70

3. Determine Qt based upon the skin exposure limit (3000 mrem/yr).

3000 Qt = (X/Q) X(Li + 1.1 Mi) Si 2.1-3 i

where Li + 1.1 Mi = the total skin dose factor due to emissions from noble gas radionuclide

'T' (mrem/year/lCi/m 3 ) from Table 2.

4. Determine HHSP (the monitor high-high alarm setpoint above background (net VtCi/sec)).

NOTE: Use the lower of the Qt values obtained in Sections 2.1.11A.2. and 2.1.1A.3.

HHSP = 0.50 Qt 2.1-4 0.50 = Fraction of the total radioactivity from the site via the monitored release point to ensure that the site boundary limit is not exceeded due to simultaneous releases from several release points.

B. Stack Isolation Setpoint The following method applies to gaseous releases via the Stack when determining the high-high alarm setpoint for the Stack Gas Monitor which initiates isolation of Stack releases. The method is applied to both continuous releases and batch releases (containment purges). Mechanical vacuum pump releases (relatively insignificant) will be controlled using the continuous setpoint.

1. Determine the "mix" (noble gases and composition) of the gaseous effluent.

a. Determine the gaseous source terms that are representative of the "mix" of the gaseous effluent.

Gaseous source terms are the total curies of each noble gas released during the previous month or a representative analysis of the gaseous effluent.

Table 1 source terms may be used if the Stack releases for the previous month were below the lower limits of detection (LLD).

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 PaIe 8 of 70

b. Determine Si, the fraction of the total radioactivity in the gaseous effluent comprised by noble gas radionuclide "i", for each individual noble gas radionuclide in the gaseous effluent.

Am Si = Ai 2.1-5 where Ai The radioactivity of noble gas radionuclide 'T' in the gaseous effluent.

2. Determine Qt, the maximum acceptable total release rate of all noble gas radionuclides in the gaseou's effluent (jiCi/sec), based upon the whole body exposure limit (500 mrem/yr).

500 Qt = .XViSi 2.1-6 NOTE: For short-term batch releases (equal to or less than 500 hrslyr) via drywell purging, substitute vi for Vi in Equation 2.1-6.

where Vi = The constant for long-term releases (greater than 500 hr/yr) for noble gas radionuclide '"T accounting for the gamma radiation from the elevated finite plume (mrem/year/lCi/sec) from Table 2.

vi = The constant for short-term releases (equal to or less than 500hr/yr) for noble gas radionuclide 'T' accounting for the gamma radiation from the elevated finite plume (mrem/yrlpCi/sec) from Table 2.

3. Determine Qt based upon the skin exposure limit (3000 mrem/yr).

3000 Qt = -i (Li (X/Q)s + 1.1 Bi) Si 2.1-7 M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1Page 9 of 70 NOTE: For short-term batch releases (equal to or less than 500 hours0.00579 days 0.139 hours 8.267196e-4 weeks 1.9025e-4 months per year) via drywell purging, use the short-term (X/q)svalue and substitute b! for Bi in Equation 2.1-7.

where Li(X/Q)s + 1.1 Bi = The total skin dose constant for long-term releases (greater than 500 hours0.00579 days 0.139 hours 8.267196e-4 weeks 1.9025e-4 months per year) due to emissions from noble gas radionuclide "i", Table 2, (mrem/year/ptCi/sec);

Li(X/q)s + 1.1 bi = The total skin dose constant for short-term releases (less than or equal to 500 hours0.00579 days 0.139 hours 8.267196e-4 weeks 1.9025e-4 months per year) due to emissions from noble gas radionuclide "i", Table 2, (mrem/year /pCi/sec).

4. Determine HHSP (the monitor high-high alarm setpoint above background (ptCi/sec).

NOTE: Use the lower of the Qt values obtained in sections 2.1.11B.2. and 2.1.11B.3.

HHSP = 0.50 Qt 2.1-8 0.50 Fraction of the total radioactivity from the site via the monitored release point to ensure that the site boundary limit is not exceeded due to simultaneous releases from several release points.

2.1.2 Accident Monitors The gross radioactivity in noble gases removed from the main condenser by means of steam jet air ejectors as measured prior to entering the treatment, adsorption, and delay systems SHALL be limited by an alarm setpoint for the Offgas Monitor.

This procedure determines the monitor alarm setpoint that indicates if the potential body accident dose to an individual at or beyond the site boundary due to noble gas radionuclides in the gaseous effluent released from the site exceeds a small fraction of the limits specified in 10CFR50.67 in the event this effluent, including the radioactivity accumulated in the treatment system, is inadvertently discharged directly to the environment without treatinent. This calculation is performed by the OFFGAS computer program on a routine or an as needed basis. Offgas flow is automatically terminated when this setpoint is reached.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 IPage 10 of 70 A. Maximum Release Rate Determine Qt, the maximum acceptable total release rate in jiCi/sec of all noble gas radionuclides in the gaseous effluent at the Offgas Monitor after a 5-minute decay, based on the maximum acceptable total release rate of 2.60E5 pCi/sec after a 30-minute decay.

1. Determine the offgas mixture of the gaseous effluent. The offgas mixture is the fraction of the offgas noble gas radioactivity caused by each recoil diffusion; and equilibrium component. The offgas mixture is determined at least once per month.

2. Determine Qt based on the offgas mixture using Table 3.

This table was prepared using a variation of the EBARR computer code.

B. Maximum Concentration Determine Ct, the maximum acceptable total radioactivity concentration of all noble gas radionuclides in the gaseous effluent (piCi/cc).

Ct = 2.12 E-03 Qtf 2.1-9 where f = The effluent flowrate at the Offgas Pretreatment Monitor (cfm);

C. Monitor Reading Determine C.R., the calculated monitor reading above background attributed to the noble gas radionuclides (mR/hr).

C.R.= Ct CE 2.1-10 where E = The detection efficiency of the monitor for noble gas radionuclides represented in main condenser offgas ( 1 iCi/cc/mR/hr) from Plant Chemistry Surveillance procedures.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 11 of 70 D. Monitor High High Setpoint The monitor high-high alarm setpoint above background (mr/hr) should be set at or below the C.R. value.

2.1.3 Offgas Storage Tank Maximum Activity The maximum activity in each storage tank is limited to less than 22,000 curies of noble gas (considered as dose equivalent Xe-133) after 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months of holdup. To verify that this limit is not exceeded, Table 3 is used.

The gross radioactivity of noble gases from the main condenser air ejector is determined by isotopic analysis monthly and whenever a significant increase in offgas activity is noted. Analysis of this data is used to determine the primary mode of fission product release from the fuel (recoil, equilibrium, or diffusion) and the grols release rate. This information combined with the condenser air inleakage rate (cfm) and the air ejector monitor release rate is used to confirm that the maximum tank contents limit is not exceeded. This calculation is performed by the OFFGAS computer program on a routine or as needed basis.

Table 3 is entered with the offgas mixture (fraction recoil, diffusion, and equilibrium rounded to one decimal place) and the air inleakage rate (in cfm). The resulting tank activity is multiplied by the current total release rate after a 30 minute decay (pCi/sec) and divided by the maximum permitted air ejector release rate of 260,000 ýtCi/sec. Linear interpolation of air inleakage is used.

As noted earlier, Table 3 is derived from the EBARR computer program described in Section 2.4. It is extremely unlikely that the maximum tank activity limit will be exceeded.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 12 of 70 2.2 Gaseous Effluent Dose Rate - Compliance With Technical Specifications Dose rates resulting from the release of noble gases, and from radioiodines and particulates must be calculated to show compliance with 10CFR20. The dose rate limits of Technical Specifications are conservatively applied on an instantaneous basis at the hypothetical worst case location.

2.2.1 Noble Gases The dose rate in un'restricted areas resulting from noble gas effluents is limited to 500 mrem/yr to the total body and 3000 mrem/yr to the skin.

The setpoint determinations discussed in the previous section are based on the dose rate calculation method presented in NUREG-0133(4). This represents a backward solution to the limiting dose rate equations in NUREG-0133. Setting alarm trip setpoints in this manner will ensure that the limits of Technical Specifications are met for noble gas releases. Therefore, no routine dose rate calculations for noble gases will be needed to show compliance with this part. Routine calculations are made for dose rates from noble gas releases to show compliance with 10CFR50, Appendix I by performing the DOSGAS computer program.

2.2.2 Radioiodine and Radioactive Particulates and Other Radionuclides The dose rate in unrestricted areas resulting from the release of radioiodines and particulates with half lives greater than 8 days is limited by Technical Specifications to 1500 mrem/yr to any organ. The calculation of dose rate from radioiodines and particulates is performed for drywell purges prior to the release and weekly for all releases. This calculation is performed by the DWCAL computer program for drywell purges and 1/week by the IPART computer program for all releases.

The calculations are based on the results of analyses obtained pursuant to Surveillance Requirement 3.1.4.B. To show compliance with Technical Specifications, Equation 2.2-1 will be evaluated for 1-131, 1-133, tritium, and radioactive particulates with half lives greater than eight days.

XPi [X/Qv) Qj, + (X/Q,) Qis] < 1500 mrem/yr 2.2-1 where P = child critical organ dose parameter for radionuclide i for i Ithe inhalation pathway, mrem/yr per ýtCi/m 3 ; (Table 4)

(X/Q)v annual average relative concentration for long-term release from the Reactor Building vent at the critical location, sec/m 3 (Appendix A, Table 3);

(x/Q)S = annual average relative concentration for long-term releases from the offgas stack at the critical location, sec/m3 (Appendix A, Table 6);

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 13 of 70 Qi, = the release rate of radionuclide i from the Reactor Building vent for the week of interest, ýiCi/sec; Qs = the release rate of radionuclide i from the offgas stack for the week of interest, ttCi/sec.

The X/Q values presented in Appendix A, Tables 3 and 6 have been calculated using the USNRC computer code "XOQDOQ"'(5). Dose rate calculations using Equation 2.2-1 are made once per week. The source terms Qi, and Qis are determined from the results of analysis of weekly stack and Reactor Building particulate filters and charcoal cartridges.

These source terms include all gaseous releases from MNGP. They are recorded and reported as the total dose for compliance with Technical Specifications.

Radioiodines and particulates may be released from both the offgas stack and the Reactor Building vent. As specified in NUREG-0133, the critical receptor location is ideptified based on the Reactor Building vent X/Q.

A component of the total stack or vent source term may be due to short term releases occurring as a result of containment drywell purging.

Dose rate calculations are made on this component separately to further assure compliance with Technical Specifications prior to release.

The calculated dose rate is used only to determine whether or not the drywell can be purged. All dose rates from drywell purges will be accounted for and reported through the weekly calculations discussed above. Release rates are determined from the results of analyses of samples from the drywell. The real time atmospheric dispersion factor (X/Q) is calculated by performing the MIDAS XP Computer Program lAW MNGP Procedure 1.06.07 (ATMOSPHERIC DISPERSION DETERMINATION).

The term Qjs for the calculation of drywell purge dose rate is determined by multiplying the concentration of each nuclide in the drywell by the rate of release. Credit will be taken for the expected reduction in radionuclide concentration due to use of the standby gas treatment system. Equation 2.2-2 is used to calculate purge dose rates. Only one source term is used depending on the release point (stack or Reactor Building vent). Short term values of X/q from Appendix A, Table 9 or Table 12 are used in the purge dose rate calculation. the limiting dose rate limit for each purge is determined using:

BL = 1500 - (DA,+ Dc, - Ddw) 2.2-2 where BL = limiting dose rate for the batch, mrem/yr; D,, = previous week's dose rate from Reactor Building continuous and batch releases, mrem/yr; M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 14 of 70 Dcs previous week's dose rate from offgas stack continuous and batch releases, mrem/yr; Ddw previous week's total dose rate from drywell purge releases, mrem/yr, for the purge release point.

Although mechanical vacuum pump releases are batch mode, they cannot be sampled prior to release. For this reason, no prerelease dose rate calculations can be made from this source. Experience has shown mechanical vacuum pump release to be well within Technical Specifications limits.

2.2.3 Critical Receptor Identification As stated in 5.2.1 of NUREG-0133, when the critical receptor is different for stack and vent releases, the controlling location for vent releases should be used. For this reason, the Reactor Building vent dispersion parameters are used tq identify the critical receptor. (Historical Atmospheric Dispersion factors (D/Q) are used for determining the critical receptor (App A, Table 5).) As discussed previously, weekly and batch dose rate calculations are performed for the critical boundary location. The critical boundary location is based on reactor vent long term X/Q (Appendix A, Table 3) is 0.43 miles in the SSE sector.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 15 of 70 2.3 Gaseous Effluents - Compliance With IOCFR50 Doses resulting from the release of noble gases, and radioiodines and particulates must be calculated to show compliance with Appendix I of 10CFR50.

The calculations are performed monthly for all gaseous effluents. Calculations of the doses received due to the release of noble gases is performed by the DOSGAS computer program. Similarly the dose received due to the release of radioiodines and particulates is calculated by the DOSPIT computer program.

These two programs are performed monthly or as required.

This section describes the methods and equations used at MNGP to perform the dose evaluation using manual methods based on historical meteorological dispersion parameters.

2.3.1 Noble Gases The air dose in unrestricted areas at MNGP is limited to:

A. for any calendar quarter:

DY*- 5 mrad due to gamma radiation; and Dp:- 10 mrad due to beta radiation; and B. for any calendar year:

Dy < 10 mrad due to gamma radiation; and Dp -<20 mrad due to beta radiation.

Air doses may be calculated using historical meteorological data using the highest normalized concentration statistics as the best estimator of the atmospheric dispersion.

A. Air Dose Based on Historical Meteorology The limiting air dose, D, based on historical meteorology is based on the critical receptor in the unrestricted area. For air doses the critical receptor is described by the off-site location with the highest long term annual average relative concentration (X/Q) at or beyond the restricted area boundary. For short-term vent releases (less than 500 hours0.00579 days 0.139 hours 8.267196e-4 weeks 1.9025e-4 months per year), the location with the highest short-term average relative concentration (x/q) is chosen.

The critical receptor is described in section 2.3.5.

For gamma radiation, the air dose is given by:

DY= 3.17 x 10"-8 . (Mi[(X/Q) vQj, + (X/q)v qiv] + BiQis + biqis) 2.3-1 M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1Page 16 of 70 The historical meteorological data base is the basis for the method described in the original MNGP ODCM.

For beta radiation, the air dose is:

Do = 3.17 x 10-8 TNi [(x/Q)vQiv + (X/q),,qiv + (X/Q)sQi. + (./q)sqis]

2.3-2 where M = The air dose factor due to gamma emission for each identified noble gas radionuclide i, mrad/yr per pCi/m 3 ; (Table 5)

Ni = the air dose factor due to beta emissions for each identified noble gas radionuclide i, mrad/yr per.

.ICi/m 3; (Table 5)

(X/Q)v = the annual average relative concentration for areas at or beyond the site boundary for long-term Reactor Building vent releases (greater than 500 hr/yr), sec/m3 , (Appendix A, Table 3);

(x/q)v = the relative concentration for areas at or beyond the site boundary for short-term Reactor Building vent releases (equal to or less than 500 hr/yr),

sec/m 3, (Appendix A, Table 12);

(x/Q)s = the annual average relative concentration for areas at or beyond the site boundary for long-term offgas stack releases (greater than 500 hr/yr), sec/mi (Appendix A, Table 6);

(X/q)s = the relative concentration for areas at or beyond the site boundary for short-term offgas stack 3 releases (equal to or less than 500 hr/yr), sec/m (Appendix A, Table 9);

qs = the average release of the noble gas radionuclide i in gaseous effluents for short-term offgas stack releases (equal to or less than 500 hr/yr), p.Ci; qiv = the average total release of the noble gas radionuclide i in gaseous effluents for short-term Reactor Building vent releases (equal to or less than 500 hr/yr), 1iCi; Qis = the total release of noble gas radionuclide i in gaseous releases for long-term offgas stack releases (greater than 500 hr/yr), p.Ci; M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 17 of 70 Qi = the total release of noble gas radionuclide i in gaseous effluents for long-term Reactor Building vent releases (greater than 500 hr/yr), pCi; Bi = the constant for long-term releases (greater than 500 hr/yr) for each identified noble gas radionuclide i accounting for the gamma radiation from the elevated finite plume, mrad/yr per pCi/sec (Table 6);

bi = the constant for short-term releases (less than or equal to 500hr/yr) for each identified noble gas radionuclide i accounting for the gamma radiation from the elevated finite plume, mrad/yr per VtCi/sec (Table 6);

3.17 x 10-8 = the inverse of the number of seconds in a year.

Noble gases are continuously released from the Reactor Building vent and the plant stack. These long-term releases rates are determined from the continuous noble gas monitor readings and periodic radionuclide analyses. There are infrequent containment purges from either release point. To separate the short-term release from the long term release (the continuous monitor records both), the drywell source term should be subtracted from the total source term whenever a purge release occurs. Periodic radionuclide analysis of main condenser offgas and radionuclide analysis of each purge prior to release are used in conjunction with the total activity measured by the monitor to quantify individual noble gas nuclides released.

Long-term and short-term X/Q's are given in Appendix A for both the Reactor Building vent and the plant stack. Short-term X/q's were calculated using the USNRC computer code "XOQDOQ" assuming 144 hours0.00167 days 0.04 hours 2.380952e-4 weeks 5.4792e-5 months per year drywell purge. Values of M and N were calculated using the methodology presented in NUREG-0133 and are given in Table 5. Table 6 presents values of Bi and bi calculated using the USNRC computer code "RABFIN." This code was also used to calculate values of Vi presented in section 1.0. Values of vi, were calculated by multiplying Vi by the ratio of bi to Bi. The vi, iB1, and bi values of Table 6 are the maximum values for the site boundaries location.

This location, 0.51 mi SSE, is different than the critical site boundary location based upon the Reactor Building vent x'Q.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 18 of 70 2.3.2 Radioiodine, Particulates, and Other Radionuclides The dose, Daj, to an individual from radioiodines, radioactive materials in particulate form and radionuclides other than noble gases with half lives greater than eight days in gaseous effluents released to unrestricted areas SHALL be limited to:

Dai:< 7.5 mrem for any calendar quarter Daj < 15 mrem for any calendar year These limits apply to the receptor location where the combination of existing pathways and age groups indicates the maximum exposure.

A. Dose from Radioiodines and Particulates Based on Historical Meteorology The worst case dose to an individual from 1-131, tritium and radioactive particulates with half-lives greater than eight days in gaseous effluents released to unrestricted areas is determined by the following expressions:

gaj = 3.17 X 10-8 piZRiapj [WvQiv+Wvqiv + WsQis+Wsqis] 2.3-3 where Q = release of radionuclide i for long-term offgas stack releases (greater than 500 hr/yr), pCi; Q = release of radionuclide i for long-term Reactor Building vent releases (greater than 500 hr/yr),

ýCi; qis release of radionuclide i for short-term offgas stack purge releases (equal to or less than 500 hr/yr);

vtCi; qi, release of radionuclide i for short-term Reactor Building vent purge releases (equal to or less than 500 hr/yr); pCi; Ws the dispersion parameter for estimating the dose to an individual at the controlling location for long-term offaas stack releases (greater than 500 hr/yr), sec/m or M ;

WV the dispersion parameter for estimating the dose to an individual at the controlling location for long-term Reactor Building vent releases (greater than 500 hr/yr), sec/m 3 or M-2; M/kab

WS the dispersion parameter for estimating the dose to an individual at the controlling location for short-term offgas stack releases (equal to or less than 500 hr/yr), sec/mi3 or M2; Wv the dispersion parameter for estimating the dose to an individual at the controlling location for short-term Reactor Building vent3 releases (equal to or less than 500 hr/yr), sec/mi or m-2 3.17 x 10-8 the inverse of the number of seconds in a year.

Riapj = the dose factor for each identified radionuclide i, pathway p, age group a, and organ j, mi2 mrem/yr per ýtCi/sec or mrem/yr per p.Ci/m 3.

The above equation is applied to each combination of age group and organ. Values of Riap have been calculated using the methodology given in NUIEG-0133 and are given in Tables 7 through 25. The equation is applied to a controlling location which will be one of the following:

A. residence, B. vegetable garden, C. milk animal.

The selection of the actual receptor is discussed in section 2.3.5.

The W values are in terms of X/Q (sec/m 3) for the inhalation pathways and for tritium and in terms of D/Q (m-2 ) for all other pathways.

Section 2.5.2 contains the methodology for calculating Riapi values. This method will be used to compute dose factors for nuclides not tabulated in Tables 7 through 25 if they are encountered.

2.3.3 Cumulation of Doses Doses calculated monthly are summed for comparison with quarterly and annual limits. The monthly results are added to the doses cumulated from the other months in the quarter of interest and in the year of interest and compared to the limits given in section 2.3.1 and 2.3.2. This summation is performed by the DOSGAS and the DOSPIT computer programs for doses from exposures due to noble gas, and radioiodine and particulates respectively. If these limits are exceeded, a Special Report will be submitted to the USNRC. If twice the limits are exceeded, a Special Report showing compliance with 40CFR190(9 ) will be submitted.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 I TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 20 of 70 2.3.4 Projection of Doses Projection of doses is not necessary. The ODCM requires the offgas holdup system to be operated at all times.

2.3.5 Critical Receptor Identification The critical receptors for compliance with 10CFR50, Appendix I will be identified. For the noble gas specification the critical location is based on the external dose pathway only. This location is the off-site location with the highest long-term Reactor Building vent X/Q and is selected using the X/Q values given in Appendix A, Table 4. The critical receptor location is used for showing compliance with 10CFR20 and remains the same unless meteorological data is re-evaluated or the site boundary changes.

The critical location for the radioiodine and particulate pathway is selected once per year. This selection follows the annual land use census performed within 5 miles of the MNGP. Each of the following locations is evaluated as a potential critical receptor before implementing the effluent technical specifications:

A. Residences in each sector.

B. Vegetable garden producing leafy green vegetables.

C. All identified milk animal locations.

The critical receptor is selected based on this evaluation.

Following the annual survey, doses are calculated using Equation 2.3-3 for all newly identified receptors and those receptors whose characteristics have changed significantly. The calculation includes appropriate information shown to exist at each location. The dispersion parameters given in this manual should be employed. The total releases reported for the previous calendar year should be used as the source term.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 21 of 70 2.4 Summary of EBARR Computer Program The basic task performed by EBARR is to predict the offgas composition and activity at various stages of waste gas treatment and at the time of release (Table 26). The basic data supplied to EBARR consists of the release rate, in gCi/sec measured at the SJAE, of six readily measurable fission product noble gases: Xe-133, Xe-135, Kr-85M., Kr-88, Kr-87, and Xe-138. There are nine other noble gases of interest from a radioactive effluent point of view. They are:

Kr-90, Xe-139, Kr-89, Xe-137, Xe-135m, Kr-83m, Xe-133m, Xe-131m, and Kr-85. Many of these nine gases are not directly measurable in the presence of the others. By establishing the offgas release mode from the six measured release rates, EBARR computes the release rates of the other nine gases known to be present.

The first step performed by EBARR is to correct the release rates of the six measured noble gases for decay during their transit from the reactor vessel to the SJAE:

Ai(O) = Ai(tdly) eXi taly 2.4-1 where Ai(t) = release rate of noble gas i at the time t after leaving reactor, pCi/sec; tdly = transit time from reactor to SJAE, sec; Xi = decay constant of noble gas i, sec 1 .

EBARR then uses a least square fitting routine to determine the values of B1, B2 ,

and B3 giving the best fit to A1(0) through A6 (0) in the equation:

I Ai I B2 B3 I log I I = log I B,+ + I 2.4-2 I I Ii where yj = fraction of all fissions yielding noble gas i.

This equation consists of three terms; a recoil release mode term, a diffusion release mode term, and an equilibrium release mode term. This is the standard General Electric offgas distribution model.

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MONTICELLO NUCLEAR GENERATING PLANT I ODCM-05.01 I TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 22 of 70 The values of B1 , B2 , and B3 , are used by EBARR to characterize the offgas release mechanism in terms of percent recoil, percent diffusion, and percent equilibrium type release. This characterization is useful in fuel performance evaluation. The equation for these three fractions are:

BlyiXi i= 1,6 2.4-3

% Recoil = 100 X Y, (BlyiXi + B2 Yi VX + B3Yi) i=1,6 X. B2Yi i= 1,6 2.4-4

% Diffusion = 100 X Y- (BlyiXi + B2yi -iX-i-+ B3Yi) i =1,6 B3yi i = 1,6 2.4-5

% Equilibrium = 100 X Z (BlYiyi + B2Yi k + B3Yi) i = 1,6 The release rate from the reactor vessel for the nine noble gases not measured is then:

Ai(0) = BjyjXi + B2yiO-i+ B3yi 2.4-6 At any time, t, after leaving the reactor vessel the release rate is:

-xiti Ai(t) = Ai(0) e , for i = 3 through 14 2.4-7 and Ai(t) = Ai(0) e-i + ck jo ki - k (e -Xjt -e -Xjt ), for 1 = 1, 2, and 15 2.4-8 where oci fraction of disintegrations of isotope j producing isotope i.

Equation (2.4-8) contains an additional factor to account for the decay of Xe-131m to Xe-133, Xe-135m to Xe-135, and Kr-85m to Kr-85. This factor is normally small.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Pagle 23 of 70 As shown in Table 26, the plant stack noble gas release consists of three components:

A. main condenser non-condensibles; B. gland exhaust; and C. stack dilution air drawn from Reactor and Turbine Buildings.

Source C is considered to be negligible compared to sources A and B. The composition of the gland exhaust release is assumed to be identical to the offgas mixture at the SJAE. Therefore, the stack release rate of isotope i is:

Ri(t) = Ai(t) + FlocAi(tdly) 2.4-9 where Foc= fraction of main steam flow diverted to gland seal steam supply and the total noble gas release rate at any time is:

Rtot(t) = Y [Ai(t) + F1,oAi (tdly)] 2.4-10 i=1, 15 EBARR also performs a secondary task of computing the compressed offgas storage tank contents in terms of dose equivalent Xe-133. Control 2.4.1.B in ODCM-03.01 limits this quantity to 22,000 Curies 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months after placing a tank in storage (when the discharge valve interlock permits the tank to be released).

Prior to reaching the storage tanks (Table 26), the offgas stream is delayed several hours flowing from the recombiners to the compressors via the 42-inch holdup pipe. Offgas reaching the tanks is therefore delayed by:

tddly = tdly + P42V42 2.4-11 PaL where V42 = 42-inch pipe volume; P42 = 42-inch pipe pressure; L = total air inleakage, SCFM, (Bleed air and condenser inleakage);

Pa = atmospheric pressure.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1 Page 24 of 70 While a tank is being filled, offgas enters the tank at rate L. The activity of each isotope in the tank, CQ, is a function of time from the start of filling, tf, is computed by EBARR using.

Aiiddt)f- it Ci(tf) di n (1 - e for i = 3 to 14 2.4-12 and Ai(tddly) (1 - e -,itf )+ ) + XiAj(tddly) [e -Xitf-e + 1 -e -Xjtf Ci(tf) = (i xi for i= 1,2, and 15 2.4-13 Equation 2.4-13 contains an additional factor to account for the decay of Xe-133m to Xe-133, Xe-135m to Xe-135, and Kr-85m to Kr-85. This factor is normally small.

Pressure builds up in the tank at the rate:

tfL Pa 2.4-14 p(tf) - Vtk where Vtk = volume of storage tank.

When the pressure in the tank reaches the design value, Pmax, at tf,,, EBARR assumes the tank is full. Total tank activity, C, and total tank Xe-133 dose equivalent activity, D, is computed at trel when the interlock on the tank discharge valve permits the tank to be released after an additional delay of tintk:

PmaxVtk 2.4-15 tfih- PaL trel = tfill + tintk 2.4-16

-Xitintk Ci(trel) = C(tfili) e , for i = 3 through 14 2.4-17 and

-kvitintk + aiXi Cj(tfiij) (e -kjtintk -e-&itintk ) for i = 1, 2, and 15 Ci(trel) = (Ci(tfll) e xij - k 2.4-18 M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Paqe 25 of 70 2.4-19 C(trei) = E C (tr61) i= 1,15 2.4-20 D(trej) = Y Ci(trei) Ki i = 1, 15 Ki where Ki = value of Ki for Xe-1 33 (i = 1) from Table 5.

The minimum offgas holdup time is:

tholdup = tddly + trel 2.4-21 When the system is operating normally; however, with all five holdup tanks in service, the holdup time is given by:

tholdup = tddly + 4 tfilI 2.4-22 M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 26 of 70 2.5 Dose Parameters for Radioiodines, Particulates and Tritium This section contains the methodology which was used to calculate the dose parameters for radioiodines, particulates, and tritium to show compliance with 10CFR20 and Appendix I of 10CFR50 for gaseous effluents. These dose parameters, Pi and Ri were calculated using the methodology outlines in NUREG-0133 along with Regulatory Guide 1.109 Revision 1. The following sections provide the specific methodology which was utilized in calculating the Pi and Ri values for the various exposure pathways.

2.5.1 Calculation of Pi The parameter, Pi, contained in the radioiodine and particulates portion of Section 2.2, includes pathway transport parameters of the ith radionuclide, the receptor's usage of the pathway media and the dosimetry of the exposure. Pathway usage rates and the internal dosimetry are functions of the receptor's age; however, the child age group will alwaysý receive the maximum dose under the exposure conditions assumed.

A. Inhalation Pathway Pi = K' (BR) DFAi 2.5-1 where PI dose parameter for radionuclide i for the 3

inhalation pathway, mrem/yr per jiCi/m ;

K' = a constant of unit conversion,

= 106 pCi/gCi; BR = the breathing rate of the child age group, m3/yr DFAi = the maximum organ inhalation dose factor for the child age group for radionuclide i, mrem/pCi.

The age group considered is the child group. The child's breathing rate is taken as 3700 m3/yr from Table E-5 of Regulatory Guide 1.109 Revision 1. The inhalation dose factors for the child, DFAi, are presented in Table E-9 of Regulatory Guide 1.109 in units of mrem/pCi. The total body is considered as an organ in the selection of DFAi.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 27 of 70 The incorporation of breathing rate of the child and the unit conversion factor results in the following:

Pi = 3.7E9 X DFAi 2.5-2 2.5.2 Calculation of Ri The radioiodine and particulate Control 2.3.1.A. is applicable to the location in the unrestricted area where the combination of existing pathways and receptor age groups indicates the maximum potential exposure occurs. The inhalation and ground plane exposure pathways SHALL be considered to exist at all locations. The grass-goat-milk, the grass-cow-milk, grass-cow-meat, and vegetation pathways are considered based on their existence at the various locations. Ri values have been calculated for the adult, teen, child, and infant age groups for the ground plane, cow milk, goat milk, vegetable and beef ingestion pathways. The methodology which was utilized to calculate these values is presented below.

A. Inhalation Pathway 2.5-3 R = K'(BR)a (DFAi)a2.-

where Ril dose factor for each identified radionuclide i of the

- organ of interest, mrem/yr per 1iCi/m 3; K' a constant of unit conversion,

= 106 pCi/p.Ci; (BR)a = breathing rate of the receptor of age group a, m 3/y-r; (DFAi)a = organ inhalation dose factor for radionuclide i for the receptor of age group a, mrem/pCi.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 28 of 70 The breathing rates (BR)a for the various age groups are tabulated below, as given in Table E-5 of the Regulatory Guidel.109 Revision 1.

Age Group (a) Breathing Rate (m 3/yr)

Infant 1400 Child 3700 Teen 8000 Adult 8000 Inhalation dose factors (DFAi)a for the various age groups are given in Tables E-7 through E-10 of Regulatory Guide 1.109 Revision 1.

B. Ground Plane Pathway RiG

liK'K"(SF)DFGi (1-e -Xt ) 2.5-4 where R!G

dose factor for the ground plane pathway for each identified radionuclide i for the organ of interest; mrem/yr per ýiCi/sec per m-2; K' = a constant of unit conversion,

= 106 pCi/pci; K" = a constant of unit conversion,

= 8760 hr/yr; Xi = the radiological decay constant for radionuclide i, sec 1 t = the exposure time, sec,

= 4.73 x 108 sec (15 years);

DFGi = the ground plane dose conversion factor for radionuclide i, 2

mrem/hr per pCi/m M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Pacie 29 of 70 SF = the shielding factor (dimensionless);

li = factor to account for fractional deposition of radionuclide i.

For radionuclides other than iodine, the factor li is equal to one.

For radioiodines, the value of li may vary. However, a value of 1.0 was used in calculating the R values in Table 7.

A shielding factor of 0.7 is suggested in Table E-15 of Regulatory Guide 1.109 Revision 1. A tabulation of DFG values is presented in Table E-6 of Regulatory Guide 1.109 Revision 1.

C. Grass-Cow or Goat-Milk Pathway

-xitf RiM = liK'QFUapFm(DFLi)a e fpfs + (1-fpfs) gbi.

-XEtes r(1-e i ) -kith 2.5-5 YsdXE e where RiM = dose factor for the cow milk or goat milk pathway, for each identified radionuclide i for the organ of interest, mrem/yr per piCi/sec per m-2; K' = a constant of unit conversion,

= 106 pCi/jICi; QF = the cow or goat feed consumption rate, kg/day (wet weight);

Uap = the receptor's milk consumption rate for age group a, liters/yr; Yp = the agricultural productivity 2 by unit area of pasture feed grass, kg/M Ys = the agricultural 2 productivity by unit area of stored feed, kg/m M/kab

MONTICELLO NUCLEAR GENEI tATING PLANT ODCM-05.01 TITLE: GASEOUS EFFILUENT CALCULATIONS Revision 7 Page 30 of 70 Fm the stable element transfer coefficients, pCi/liter per pCi/day; r = fraction of deposited activity retained on cow feed grass; (DFLi) a= the organ ingestion dose factor for radionuclide for the receptor in age group a, mrem/pCi; XEi = Xi +Xw

?xi = the radiological decay constant for radionuclide sec-1 Xw = the decay constant for removal of activity on leaf and plant surfaces by weathering, sec 1 ,

= 5.73x10- 7 sec-1 (corresponding to a 14 day half-life);

tf = the transport time from feed to cow or goat, to milk, to receptor, sec; th = the transport time from harvest, to cow or goat, to consumption, sec; 0-11 fp = fraction of the year that the cow or goat is on pasture;,

f. = fraction of the cow feed that is pasture grass while the cow is on pasture; tep = period of pasture grass and crop exposure during the growing season, sec; tes = period of crop exposure during the growing season (stored feed); sec; li = factor to account for fractional deposition of radionuclide i.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 31 of 70 For radionuclides other than iodine, the factor li is equal to one.

For radioiodines, the value of li may vary. However, a value of 1.0 was used in calculating the R values Tables 14 through 21.

Milk cattle and goats are considered to be fed from two potential sources, pasture grass and stored feeds. Following the development in Regulatory Guide 1.109 Revision 1, the value of fs is considered unity in lieu of site-specific information. The value of fn is 0.500 based upon an 6 month grazing period.

Appendix C, Table 1 contains the appropriate parameter values and their source in Regulatory Guide 1.109 Revision 1.

The concentration of tritium in milk is based on the airborne concentration rather than the deposLtion. Therefore, the Ri is based on X/Q:

RTM K'K'"FBQFuap(DFLi)a 0.75(0.5/H) 2.5-6 where RT = dose factor for the cow or goat milk pathway 3

for tritium for M the organ of interest, mrem/yr per mCi/m ;

K.' = a constant of conversion,

= 10 3 gm/kg; H = absolute humidity of the atmosphere, gm/m 3; 0.75 = the fraction of total feed that is water; 0.5 = the ratio of the specific activity of the feed grass water to the atmospheric water; and the other parameters and values are as given above. A value for H of 8 grams/m 3 , was used in lieu of site-specific information.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 I TITLE: GASEOUS EFFLUENT CALCULATIONS. Revision Page 32 of7 70 D. Grass-Cow-Meat Pathway The integrated concentration in meat follows in a similar manner to the development for the milk pathway, therefore:

I

-kits RiB = liK'QFUapFm(DFLi)a e Vsf + (1-fprf)

Vk IV 79

-kith rjk:j!.1 I Cý-T 2.5-7 Itirý

-4 where RiB dose factor for the meat ingestion pathway for radionuclide i for any organ of interest, mRem/yr per p.Ci/sec per m2; Ff = the stable element transfer coefficient, pCi/kg per pCi/day;,

Uap - the receptor's milk consumption rate for age group a, liters/yr; ts = the transport time from slaughter to meat consumption, sec; th = the transport time from harvest, to animal consumption, sec; tep = period of pasture grass exposure during the growing season, sec; tes = period of crop exposure during the growing season (stored feed); sec; S

= factor to account for fractional deposition of radionuclide i.

For radionuclides other than iodine, the factor li is equal to one.

For radioiodines, the value of li may vary. However, a value of 1.0 was used in calculating R values in Tables 11 through 13.

All other terms remain the same as defined in Equation 2.5-5.

Appendix C, Table 2 contains the values which were used in calculating Ri for the meat pathway.

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The concentration of tritium in meat is based on its airborne concentration rather than the deposition. Therefore, the R1 is based on X/Q.

RT B = K'K"'FfQFUap(DFLi)a 0.75(0.5/H) 2.5-8 where RT = dose factor for the meat ingestion pathway for B tritium for any organ of interest, mrem/yr per mCi/m 3, All other terms are defined in Equation 2.5-6 and 2.5-7, above.

E. Vegetation Pathway The integrated concentration in vegetation consumed by man follows the expression developed in the derivation of the milk factor. Man is considered to consume two types, of vegetation (fresh and stored) that differ only in the time period between harvest and consumption, therefore:

-kEte S - i th Riv =liK'(DFLi), UL fL e -itL r(1-e i + Ua fge thO.11, a YvkE

-kEte r(1-e i ) *'

YVXE 2.5-9 where Ri = dose factor for vegetable pathway for radionuclide i for the organ of interest, mrem/yr per piCi/sec per M-2; K' = a constant of unit conversion,

= 106 pCi/j.Ci; L

Ua the consumption rate of fresh leafy vegetation by the receptor in age group a, kg/yr; S

U = the consumption rate of stored vegetation a by the receptor in age group a, kg/yr; M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 I Page 34 of 70 fL = the fraction of the annual intake of fresh leafy vegetation grown locally; fg = the traction of the annual intake of stored vegetation grown locally; tL = the average time between harvest of leafy vegetation and its consumption, sec; th the average time between harvest of stored vegetation and its consumption, sec; 2

Yv = the vegetation areal density, kg/M ;

te = period of leafy vegetable exposure during growing season, sec; factor to account for fractior~al deposition of radionuclide i.

For radionuclides other than iodine, the factor li is equal to one.

For radioiodines, the value of li may vary. However, a value of 1.0 was used in calculating the R values in Tables 8 through 10.

All other factors were defined above.

Appendix C, Table 3 presents the appropriate parameter values and their source in Regulatory Guide 1.109 Revision 1.

In lieu of site-specific data, default values for fL and fg, 1.0 and 0.76, respectively, were used in the calculation of Ri. These values were obtained from Table E-15 of Regulatory Guide 1.109 Revision 1.

The concentration of tritium in vegetation is based on the airborne concentration rather than the deposition. Therefore, the Ri is based on x/Q:

RT ,,K"[UL f US RTv K'K fL = Ua fg] (DFLi)a 0.75(0.5/H) 2.5-10 where RTv = dose factor for the vegetable pathway for tritium for any organ of interest, mrem/yr per mCi/mr, All other terms remain the same as those in Equations 2.5-6 and 2.5-9.

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I MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 35 of 70 2.5.3 Calculation of Ri for C-14 Using NUREG 0133 Methodoloqgy C14 concentration in food products is based on specific activity and assumes that the ratio of C 14 to stable carbon reaches equilibrium in all food products. The incorporation of C02 into the human food chain occurs only through direct or indirect (milk or meat) vegetation ingestion.

This process is complex and very dynamic therefore it is unlikely that true equilibrium is ever reached. The specific activity approach assumes constant environmental concentrations and is therefore admittedly very conservative. Nevertheless, it is the standard approach that is used for C 14 , as similar to the model for H3.

NUREG 0133 makes use of site specific dose factors referred to as Ri.

These Ri values are typically calculated and tabulated in the ODCM for each nuclide, age group, pathway and organ of interest. Use of the Ri values was intended to simplify the more complicated calculations of Reg Guide 1.109. NUREG 0133 implements the calculational methodology of Reg Guide 1.109 bL~t in a more convenient mathematical format.

NUREG 0133 does not contain guidance on how to calculate Ri values for C14. It is not correct to calculate Ri for C14 using the complex equations such as found in Section 5.3.1.3, page 32 of NUREG 0133.

The following equations provide the appropriate means for calculating C14 Ri values that can be use in the NUREG 0133 methodology.

A. Vegetation Dose Factor SC-14 VC DFLC14 aj 109

Ua " D j 0.19 Where:

1= 014 Site Specific Vegetation Ingestion Dose Factor for age group a and organj.

109 = Conversion factor: pCi/uCi x gm/kg.

U VC = Annual carbon ingestion via the Vegetation Pathways in Kg-Carbon per year for age group a.

DFLCI,4 = 014 Ingestion Dose Conversion Factor for age group a and organ j from Tables E-1 1 to E-1 4 of Reg Guide 1.109.

3 0.19 = Atmospheric concentration of natural carbon in gm/m based on EPA published value of 383 ppm.

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MONTICELLO NUCLEAR GENERATING PLANT-. ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 I Page 36 of 70 The annual carbon ingested via a specific pathway is:

uVC =-Uva f, -CF, G

Uvc = Annual carbon ingestion via the Vegetation Pathways in Kg-Carbon per year for age group a.

Uv = Annual consumption of vegetation from vegetable group G for age group a in Kg/yr. (Reg Guide 1.109 Table E-5) f, = Fraction of annual intake from vegetable group G grown locally. (Value of 1 - without site specific profiling)

CFG = Natural carbon fraction for vegetation group G in Kg-Carbon per Kg-Vegetation. Reg Guide 1.109 uses a default value of 0.1,1 (see Reg Guide 1.109, App C, Section 3.a, page 26).

B. Milk Dose Factor C-14 Mi* F C144 1 10 . DFLý-'

."k aj a aj 0.19 Where:

aj 014 Site Specific Milk Ingestion Dose Factor for age group a and organj.

109 = Conversion factor: pCi/uCi x gm/kg.

Ua1kC = Annual carbon ingestion via the Milk Pathway in Kg-Carbon per year for age group a.

DFLC[- 4 = C 14 Ingestion Dose Conversion Factor for age group a and organ j from Tables E-11 to E-14 of Reg Guide 1.109.

3 0.19 = Atmospheric concentration of natural carbon in gm/m based on EPA published value of 383 ppm.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 37 of 70 The annual carbon ingested via the milk pathway is:

UM~c =Uv. f. *CF*

MMiMkCik U"' = Annual carbon ingestion via the Milk Pathway in Kg-Carbon per year for age group a.

U~v = Annual consumption of milk for age group a in I/yr.

(Reg Guide 1.109 Table E-5) fMilk = Fraction of annual intake of milk produced locally.

(Value of 1 - without site specific profiling) v0' CFMik = Natural carbon fraction for milk Kg-Carbon per.,.k*

Kg-Vegetation. Reg Guide 1.109 uses a default value of 0.11 (see Reg Guide 1.109, App C, Section 3.a, page 26).

C. Meat Dose Factor RC_1 4 = 10 9 . UMeatC. DFLCT 4 . 1 aj a aj 0.19 Where:

RaC4 = 014 Site Specific Meat Ingestion Dose Factor for age group a and organ j.

109 Conversion factor: pCi/uCi x gm/kg.

U Meatc = Annual carbon ingestion via the Meat Pathway in Kg-Carbon per year for age group a.

4 DFLa' = C 14 Ingestion Dose Conversion Factor for age group a and organj from Tables E-11 to E-14 of Reg Guide 1.109.

3 0.19= Atmospheric concentration of natural carbon in gm/m based on EPA published value of 383 ppm.

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I MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 38 of 70 The annual carbon ingested via the meat pathway is:

UMeatc U Meat f.eaf CFMeat Uaeac = Annual carbon ingestion via the Meat Pathway in Kg-Carbon per year for age group a.

Ua, = Annual consumption of meat for age group a in Kg/yr.

(Reg Guide 1.109 Table E-5) ffeat = Fraction of annual intake of meat grown locally.

~-

(Value of 1 - without site specific profiling)

CFMea, = Natural carbon fraction for meat in Kg-Carbon per Kg-Meat. Reg Guide 1.109 uses a default value of 0.11 (see Reg Guide 1.109, App C, Section 3.a, page 26).

2.6 References

1. Deleted

2. Deleted

3. Monticello Nuclear Generating Plant Technical Specifications, TS-B.2.4-Radioactive Effluents, Specification 2.4.3F Rev. 25.

4. USNRC, Title 10, Code of Federal Regulation, Part 50, "Domestic Licensing of Production and Utilization Facilities", Appendix I, "Numerical Guides for Design Objectives and Limiting Conditions for Operation to Meet the Criterion 'As Low as is Reasonably Achievable' for Radioactive Material in Light-Water-Cooled Nuclear Power Reactor Effluents".

5. NSP - Monticello Nuclear Generating Plant, Appendix I Analysis -

Supplement No. 1 - Docket No. 50-263, Table 2.1-3.

6. Boegli, J.S., et. al. Eds, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants, NUREG-0133, 1978, NTIS, Springfield Va.

7. Sangendorf, J.F. and J. T. Goll, "XOQDOQ - Program for the Meteorological Evaluation of Routine Effluent Releases at Nuclear Power Stations",

NUREG-0324, 1977, USNRC, Washington, D.C.

8. USNRC, 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 50, Appendix I", Rev. 1, Oct. 1977, USNRC, Washington.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 39 of 70

9. USNRC, Regulatory Guide 1.111, "Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water-Cooled Reactors", July 1977. USNRC, Washington, D.C.

10. EPA, Title 40, Code of Federal Regulations, Part 190 "Environmental Radiation Protection Standards for Nuclear Power Operations".

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MONTICELLO ,NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1 Page 40 of 70 Figure 1 Gaseous Radwaste Ld I-Jr Oi-W 0-k-

0*

0 m1 Iz 0

Ld-j

-j Li ir 0

H w

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1 Page 41 of 70 Figure 2 Ventilation System M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 42 of 70 Table 1 Gaseous Source Terms(3) Aj, Ci/yr*

Reactor Mechanical Gaseous Drywell Radionuclide Building Vent Gland Seal Vacuum Pump Radwaste Purging Kr-83m -- 2.3E 01 ......

Kr-85m 7.1E 01 4.1E 01 .... 3.OE 00 Kr-85 ...... 1.3E 02 --

Kr-87 1.33E 02 1.4E 02 .... 3.OE 00 Kr-88 2.33E 02 1.4E 02 .... 3.OE 00 Kr-89 -- 6.OE 02 Kr-90 ..........

Xe-131m ...... 4.5E 01 --

Xe-1 33m -- 2.OE 00 -- 2.7E 01 --

Xe-133 3.26E 02 5.6E 01 2.3E 03 8.9E 03 6.6E 01 Xe-135m 6.96E 02 1.7E 01 .... 4.6E 01 Xe-135 7.09E 02 1.5E 02 3.5E 02 -- 3.4E 01 Xe-137 -- 7.3E 02 ......

Xe-138 1.41E 03 5.6E 02 .... 7.OE 00 X e-139 --........

Ar-41 ....

Total 3.58E 03 2.46E 03 2.65E 03 9.10E 03 1.62E 02

These source terms were calculated in accordance with NUREG-0016 by using the USNRC "GALE" Code and approved for use at the Monticello Nuclear Plant.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Paqe 43 of 70 Table 2 Dose Factors and Constants for the Total Body and Skin for Gaseous Radionuclides Total Whole Body Total Skin Dose Factor Total Body Dose Constant Dose Factor Ki L +j 1.1M, for Long Term Releases Vi Radionuclide (mrem/yr per ptCi/m 3 ) (mrem/yr per 4Ci/mr) (mrem/yr per pCi/sec)

Kr-83m 7.56E-02 2.12E 01 2.61 E-09 Kr-85m 1.17E 03 2.81E 03 1.39E-04 Kr-85 1.61E 01 1.36E 03 2.10E-06 Kr-87 5.92E 03 .1.65E 04 6.33E-04 Kr-88 1.47E 04 1.91E 04 1.66E-03 Kr-89 1.66E 04 2.91E 04 1.12E-03 Kr-90 1.56E 04 2.52E 04 1.61 E-04 Xe-131m 9.15E 01 6.48E 02 3.31 E-05 Xe-1 33m 2.51E 02 1.35E 03 2.51 E-05 Xe-1 33 2.94E 02 6.94E 02 2.61 E-05 Xe-1 35m 3.12E 03 4.41E 03 3.34E-04 Xe-1 35 1.81E 03 3.97E 03 2.24E-04 Xe-1 37 1.42E 03 1.39E 04 9.99E-05 Xe-1 38 8.83E 03 1.43E 04 9.90E-04 Xe-1 39 5.02E 03 7.10E 04 5.79E-05 Ar-41 8.84E 03 1.29E 04 1.20E-03 M/kab

I MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Paqe 44 of 70 Table 2 Dose Factors and Constants for the Total Body and Skin for Gaseous Radionuclides (cont'd),

Total Skin Dose Total Body Dose Constant for Long Total Dose Constant for Constant for Short Term Releases Short Term Releases Term Releases vi Li(X/Q)s. 1.1 Bj* Li(X/q)s. 1.1 bi* (mrem)/yr Radionuclide (mrem/yr per ý.Ci/sec) (mrem)/yr per gCi/sec) per gCi/sec)

Kr-83m 2.99E-09 4.15E-07 4.75E-07 Kr-85m 1.59E-04 3.90E-04 7.07E-04 Kr-85 2.40E-06 1.52E-04 4.14E-04 Kr-87 7.25E-04 2.13E-03 4.18E-03 Kr-88 1.90E-03 3.OOE-03 4.86E-03 Kr-89 1.28E-03 2.97E-03 5.20E-034 Kr-90 1.85E-04 1.08E-03 2.54E-03 Xe-131m 3.79E-05 1.10E-04 2.11 E-04 Xe-1 33m 2.87E-05 1.55E-04 3.56E-04 Xe-1 33 2.99E-05 7.88E-05 1.45E-04 Xe-135m 3.82E-04 6.36E-04 8.54E-04 Xe-135 2.57E-04 5.77E-04 9.94E-04 Xe-137 1.14E-04 1.52E-03 3.92E-03 Xe-138 1.1 3E-03 2.10E-03 3.13E-03 Xe-139 6.63E-05 .7.33E-03 2.01 E-02 Ar-41 1.57E-03 2.28E-03 3.10E-03

(x/Q)s, (x/q)s, Bi, and bi values obtained from other tables in the ODCM.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 I Page 45 of 70 Table 3 Air Ejector Monitor Trip Setting and Storage Tank Contents Storage Tank Activity in Dose Equivalent Curies Xe-133 12 Hours After Completion of Tank Fill Release Rate Set to 1.00 of Maximum Trip Setting, (000M C N-O O~ COr-nCOt 0000D COO Cn - LCO 0 0 V VD-U)0NL.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 I Page 46 of 70" Table 3 Air Ejector Monitor Trip Setting and Storage Tank Contents Storage Tank Activity in Dose Equivalent Curies Xe-1 33 12 Hours After Completion of Tank Fill Release Rate Set to 1.00 of Maximum Trip Setting (cont'd) 0 cc c-U))'I CONcc CO)U*) 6C) MI- co~ NC'c ( LOCO CD) o) co 0) N 0Ci- It- CM 0)0 N0C3) U) 00N- ) V' LO LO CO CO N P- C) Co) 00 N M) C') co ) co

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 47 of 70 Table 3 Air Ejector Monitor Trip Setting and Storage Tank Contents Storage Tank Activity in Dose Equivalent Curies Xe-133 12 Hours After Completion of Tank Fill Release Rate Set to 1.00 of Maximum Trip Setting (cont'd)

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 I TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 T Paire 48 of 70 Table 4 Child Critical Organ Dose Parameters for Radionuclide i for the Inhalation Pathway Pi Nuclide mrem/yr per g.Ci/ml H-3 1.12E 03 Cr-51 1.70E 04 Mn-54 1.58E 06 Fe-59 1.27E 06 Co-58 1.11E 06 Co-60 7.07E 06 Zn-65 9.95E 05 Rb-86 1.98E 05 Sr-89 2.16E 06 Sr-90 1.01E 08 Y-91 2.63E 06 Zr-95 2.23E 06 Nb-95 6.14E 05 Ru-103 6.62E 05 Ru-106 1.43E 07 Ag-110m 5.48E 06 Te-127m 1.48E 06 Te-129m 1.76E 06 Cs-1 34 1.01E 06 Cs-1 36 1.71E 05 Cs-1 37 9.07E 05 Ba-140 1.74E 06 Ce-141 5.44E 05 Ce-144 1.20E 07 1-131 1.62E 07 1-133 3.85E 06 1-135 7.92E 05 M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Paqe 49 of 70 Table 5 Dose Factors for Noble Gases and Daughters That May Be Detected in Gaseous Effluents Total Body Dose Skin Dose Factor Gamma Air Dose Beta Air Dose Factor K, 3 Li Factor Mi 3 Factor N, 3 Radionuclide mrem/yr piCi/m mrem/yr pjCi/m 3 mrad/yr j.Ci/m mrad/yr p.Ci/m Kr-83m 7.56E-02 1.93E+01 2.88E+02 Kr-85m 1.17E+03 1.46E+03 1.23E+03 1.97E+03 Kr-85 1.61 E+01 1.34E+03 1.72E+01 1.95E+03 Kr-87 5.92E+03 9.73E+03 6.17E+03 1.03E+04 Kr-88 1.47E+04 2.37E+03 1.52E+04 2.93E+03 Kr-89 1.66E+04 1.01 E+04 1.73E+04 1.06E+04 Kr-90 1.56E+04 7.29E+03 1.63E+04 7.83E+03 Xe-1 31 m 9.15E+01 4.76E+02 1.56E+02 1.11 E+03 Xe- 133m 2.51 E+02 9.94E+02 3.27E+02 1.48E+03 Xe-133 2.94E+02 3.06E+02 3.53E+02 1.05E+03 Xe-1 35m 3.12E+03 7.11 E+02 3.36E+03 7.39E+02 Xe-135 1.81 E+03 1.86E+03 1.92E+03 2.46E+03 Xe-137 1.42E+03 1.22E+04 1.51 E+03 1.27E+04 Xe-1 38 8.83E+03 4.13E+03 9.21 E+03 4.75E+03 Xe-139 5.02E+03 6.52E+04 5.28E+03 6.52E+04 Ar-41 8.84E+03 2.69E+03 9.30E+03 3.28E+03 M/kab

I MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 50 of 70 Table 6 Dose Parameters for Finite Evaluated Plumes for the Critical Boundary Location 0.51 mi from the Stack in the SSE Sector Long Term Release* Short Term Release**

Total Body Gamma Air Total Body Gamma Air Vi bi Vi Bi Noble Gas mrem/yr mrad/yr mrem/yr mrad/yr Radionuclide Ci/sec Ci/sec Ci/sec Ci/sec Kr-83m 2.61 E-09 3.77E-07 2.99E-09 4.32E-07 Kr-85m 1.39E-04 2.07E-04 1.59E-04 2.37E-04 Kr-85 2.1OE-06 3.18E-06 2.40E-06 3.64E-06 Kr-87 6.33E-04 9.52E-04 7.25E-02 1.09E-03 Kr-88 1.66E-04 2.49E-03 1.90E-03 2.85E-03 Kr-89 1.12E-03 1.68E-03 1.28E-03 1.92E-03 Kr-90 1.61 E-04 2.42E-04 1.85E-04 2.78E-04 Xe-131m 3.31 E-05 5.21 E-05 3.79E-05 5.97E-05 Xe-133m 2.51 E-05 4.09E-05 2.87E-05 4.68E-05 Xe-133 2.61 E-05 4.08E-05 2.99E-05 4.67E-05 Xe- 135m 3.34E-04 5.06E-04 3.82E-04 5.79E-04 Xe-135 2.24E-04 3.37E-04 2.57E-04 3.89E-04 Xe-137 9.99E-05 1.51 E-04 1.14E-04 1.73E-04 Xe-138 9.90E-04 1.49E-03 1.13E-03 1.70E-03 Xe-139 5.79E-05 8.69E-05 6.63E-05 9.95E-05 Ar-41 1.20E-03 1.80E-03 1.38E-03 2.07E-03

Values are annual average

- Values are for 144 hours0.00167 days 0.04 hours 2.380952e-4 weeks 5.4792e-5 months per year purge.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1 Page 51 of 70 Table 7 Ri Values for the Monticello Nuclear Generating Plant Ground Pathway C)C )C ) D0COCD 0'N O ýCD)J 0 CDLO ,- M' "t N N~ ' NJc N

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 52 of 70 Table 8 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Adult Age Group C*l 000000000000000000000.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 53 of 70 Table 9 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Teen Age Group S0 0 0 0) 00 0000 000 0000000 000 000000000000 0000000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 55 of 70 Table 11 R, Values for the Monticello Nuclear Generating Plant Meat Pathway Adult Age Group CD.0D 0ý 00 00CD 0 0D0 0 000 00 C 00000D DCýC

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.O1-TITLE: GASEOUS EFFLUENT CALCULATIONS Table 12 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway Teen Age Revision 7 Page 56 of 70 j Group 000 ) ) )000 000)C)0 00000 D0 )0 000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Paqe 57 of 70 Table 13 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway Child Age Group C'J0 00 000000 00000000000000000000 WWWWWWWWWWWWWWWWWWWWWW CDOOO0000O00000000000 00 00000000 00 W

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1 Page 58 of 70 Table 14 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Adult Age Group L000000000000000000000 000 000000000000000000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Paqe 59 of 70 Table 15 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Teen Age Group 00000 0) 0 00000 0000 0 0 00 C 0 0) wwwww UW 00000 UJ IJ 00000ý C UJ w wwwww UjLUWWU C 0 00 C 0) 00 CwwwwDwC C 0ý

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1 Page 60 of 70 Table 16 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Child Age Group

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1Page 61 of 70 Table 17 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Infant Age Group 0 0000000 n 000000000 0) 000 )n0 000 0)

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 62 of 70 Table 18 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Adult Age Group ct)000 0 0000 00 00000 000 000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Paqe 63 of 70 Table 19 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Teen Age Group I C1 0000 C oC0000 o D 00 0 0o 0 0 000000000D000000)000000 w ww w wwwwJLI L L1Ww WWWWW w WWWW w LL1w 000000 C C C 0) 0 0ý 000000 C C C C) )666C6C C 00000 0000 0; 00000 0Cý( )00ý(:

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 1PaIe 64 of 70 Table 20 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Child Age Group c*'000000000000000000000 0000000000000000000000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 65 of 70 Table 21 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Infant Age Group 0 00000 000 0000 0O0 00

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 66 of 70 Table 22 R, Values for the Monticello Nuclear Generating Plant Inhalation Pathway Adult Age.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Page 67 of 70 Table 23 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Teen Age Group 0 0 0 e 00 0 0 0 00 0 0 C0 00 0 0 0-t0(

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 I Page 68 of 70 Table 24 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Child Age Group COO C 0 COOO) 000000000000000000000 C D CDC0CD CC

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 IPage 69 of 70 Table 25 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Infant Age Group

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I MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 7 Paqe 70 of 70 Table 26 Table of Radioisotope Constants Used by EBARR i Isotope Fission Yield Decay Constant Xe-I 33 0.0669 0.00000152 2 Xe-1 35 0.0630 0.0000210 3 Kr-85m 0.0130 0.0000438 3 Kr-88 0.0356 0.00000690 4 Kr-87 0.0253 0.000152 5 Xe-138 0.0590 0.000814 6 Kr-90 0.0500 0.0210 7 Xe-1 39 0.0540 0.0169 8 Kr-89 0.0459p 0.00361 10 Xe-1 37 0.0600 0.00296 11 Xe- 135m 0.00720 0.000722 12 Kr-83m 0.00520 0.000103 13 Xe-133m 0.00160 0.00000348 14 Xe-131m 0.000170 0.000000668 15 Kr-85 0.00271 0.00000000204 M/kab

MONTICELLO NUCLEAR GENERATING PLANT ODCM-06.01 TITLE: DOSE FROM ALL URANIUM FUEL CYCLE Revision 3 SOURCES Page 1 of 4 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECORD OF REVISION ....................................... 2 2.0 DOSE FROM ALL URANIUM FUEL CYCLE SOURCES .................... 3 2.1 Dose C om m itm ent .............................................. 3 2 .2 B a se s .......................... ............................... 4 Approval: PCR 01128077 I/pIr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-06.01 TITLE: DOSE FROM ALL URANIUM FUEL CYCLE Revision 3 SOURCES Page 2 of 4 1.0 RECORD OF REVISION Revision No. Date Reason for Revision 1 October - 2000 Moved previous ODCM-04.01 (INFORMATION RELATED TO 40CFR1 90 and 40CFR141) into this document, changed the title to "DOSE FROM ALL URANIUM FUEL CYCLE SOURCES" and incorporated Tech Specs section 3.8.D and 4.8.D into document.

2 June - 2005 Incorporated changes made during the conversion of the Current Technical Specifications to the Improved Technical Specifications. This includes dual step annotation.

3 March 2008 Added requirements of 10CFR72.104 for I

doses from the plant ISFSI. Removed references to CTS.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-06.01 TITLE: DOSE FROM ALL URANIUM FUEL CYCLE Revision 3 SOURCES Page 3 of 4 2.0 DOSE FROM ALL URANIUM FUEL CYCLE SOURCES 2.1 Dose Commitment 2.1.1 Controls A. In accordance with Tech Spec 5.5.3.j. and 10CFR72.104, the dose or dose commitment to any 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 for the thyroid, which SHALL be limited to less than or equal to 75 mrem over a period of 12 consecutive months.

2.1.2 Applicability At all times 2.1.3 Action A. With the calculated dose from the release of radioactive materials in liquid or gaseous effluents exceeding twice any of the limits of Controls ODCM-02.01 Section 2.2.1, ODCM-03.01 Section 2.2.1 or ODCM-03.01 Section 2.3.1, prepare and submit within 30 days a special report to the Commission which includes the following:

1. Defines corrective actions and calculates the highest-radiation exposure to any member of the general public from all uranium fuel cycle sources (including all effluent pathways and direct radiation).

2. Unless this report shows that exposures are less than the 40CFR Part 190 standard, either apply to the Commission for a variance to continue releases which exceed the 40CFR Part 190 standard or reduce subsequent releases to permit the standard to be met.

2.1.4 Surveillance Requirements A. Cumulative dose contributions from all liquid and gaseous effluents SHALL be determined in accordance with surveillance requirements ODCM-02.01 Section 2.2.4, ODCM-03.01 Section 2.2.4, and ODCM-03.01 Section 2.3.4 and in accordance with the ODCM.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-06.01 TITLE: DOSE FROM ALL URANIUM FUEL CYCLE Revision 3 SOURCES Page 4 of 4 2.2 Bases 2.2.1 Dose From All Uranium Fuel Cycle Sources A. Dose Commitment Control 2.1.1 .A. is provided to meet the dose limitations of 40CFR190. The specification requires the preparation and submittal of a special report whenever the calculated doses from plant radioactive effluents exceed twice the design objective doses of Appendix I. Submittal of the report is considered a timely request and a variance is granted until Staff action on the request is complete. For sites containing up to 4 reactors, it is highly unlikely that the resultant dose to a real individual will exceed 40CFR190 if the individual reactors remain with the reporting requirement level. For the purpose of the special report it may be assumed that the dose commitment to the real individual from other uranium fuel cycle source is negligible, with the exception that dose contributions from other nuclear fuel cycle facilities at the same site or within a radius of 5 miles must be considered.

Control 2.1.1 .A. also contains the dose limitations of 10CFR72.104, Criteria for Radioactive Materials in Effluents and Direct Radiation From an ISFSI or MRS. The dose limitations for 10CFR72.104 are the same as those in 40CFR190. MNGP installed an ISFSI in 2008.

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MONTICELLO NUCLEAR GENERATING PLANT. ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 1 of 26 Approval: " PcR 01352537 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 R EC O R D O F R EV IS IO N ..................................................................................... 2 2.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ............................ 5 2.1 Monitoring P rogram ................................................................................. .. 5 2.2 Land Use C ensus ................................................................................... .. 7 2 .3 S a mplin g ................................................................................................. .. 8 2.4 Interlaboratory Com parison Program ......................................................... 9

,2.5 Ba se s ................................................................................................... . . . 10 Figure 1 Radiation Environmental Monitoring Program Sampling Locations .......... 11 Figure 2 4 - 5 Mile Ring, Control and Special Interest TLD Locations .................... 12 Figure 3 Site Boundary TLD Locations ................................................................... 13 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis ............................... 14 Table 2 Reporting Levels for Radioactivity Concentrations in Environmental Samples (Reporting Levels) ................................ 19 Table 3 Maximum Values for the Lower Limits of Detection (LLD) ....................... 20 Table 4 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sampling Locations ............................................... 22 M/eak"

I MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 I MONITORING PROGRAM Page 2 of 26 1.0 RECORD OF REVISION Revision No. Date Reason for Revision October - 2000 Moved previous ODCM-05.01 (RADIATION ENVIRONMENTAL MONITORING PROGRAM) into this document, changed the title to "RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM" and incorporated Tech Spec section 4.16 "Radiation Environmental Monitoring Program" into this document.

November - 2001 Deleted incorrect reference in section 2.1.3.C.

November- 2002 Table 4, page 22, TLD M02S from Edgar Klucas Res., 1.1, 148, SE to Krone Residence, 0.5, 223, SW.

April - 2003 Table 4, page 20, TLD M-1 0, from Goenner Farm, 12.4, 322, NW to Campbell Farm, 10.6, 357, N.

October - 2003 Change in the Critical Garden location.

November - 2003 Updated sampling locations on Figures 1, 2 and 3.

September - 2004 Change in the Critical Garden location.

Change 2.4.1.A. to require cross check program to be NIST traceable. NRC no longer approves cross check programs.

8 June - 2005 Incorporated changes made during the conversion of the Current Technical Specifications to the Improved Technical Specifications. This includes dual step annotation.

9 January - 2006 Updated all sample locations with GPS.-

Corrected inconsistencies between location on map and actual location with GPS.

10 November - 2006 Incorporated changes suggested by NRC IP 71122.01 sections 02.01.d and 02.02.e as requested in GAR 01055347.

Removed references to Current Technical Specifications.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 3 of 26 Revision No. Date Reason for Revision 11 August 2007 Corrected location of air sampler M-4 to correct sector.

12 January 2008 Removed Wienand farm (M-24) from milk locations. The farm went out of business.

Added new groundwater wells for groundwater characterization study.

Updated Figure 3 for site boundary TLD locations. Added neutron and gamma TLDs for ISFSI monitoring.

13 August 2008 Added sampling requirements and locations for vegetation sampling.

14 November 2009 Removed Milk Sampling locations M-28 and M-10. Hoglund farm went out of business and the control milk location is no longer needed. Updated Figure 1, Radiological Environmental Monitoring Program Sampling Locations, to remove M-28. Added ground water monitoring wells MW-9, MW-10, and MW-11 15 December 2009 Updated Table 4, Radiological Environmental Monitoring Program Sample Locations, added ground water monitoring wells MW 9B, MW12A,12B,13A,13B 16 June 2010 Replaced M-10c (Campbell Farm) Drinking Water control sample location with M-43c (Imholte Farm). Changing the control drinking water location is due to the Campbell Farm no longer having'an accessible sample location.

17 October 2010 Updated Section 2.3.2, Site Groundwater Characterization Study, and Table 4, Radiological Environmental Monitoring Program Sample Locations, to add groundwater monitoring well MW-14.

Deleted reference to M-10 on Figure 1 to reflect replacement of M-10c (Campbell Farm) Drinking Water control sample location with M-43c (Imholte Farm). Added Kitzman Farm (M-16) and Greniger Farm (M-17c). The Kitzman Farm was identified as milking goats for commercial use. The Greniger Farm was chosen as the control goat milk location.

18 September 2011 Changed Critical Garden Location.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 4 of 26 Revision No. Date Reason for Revision 19 August 2012 Changed location of TLD's M07A, M08A and M01 B. M07A and M08A were moved due to rerouting County Road 75 and bridge removal. The TLD's were moved closer to the plant..MO1 B was moved due to the removal of the Sherco air monitoring station near Becker. A new GPS software has been obtained and sample location bearings and distances updated lAW new software.

20 September 2012 Updated Table 4, Radiological Environmental Monitoring Program Sample to Locations, added ground water monitoring wells, MW-15A and MW-1 5B.

21 September 2012 Updated Table 4 and Figure 1 for new highest D/Q garden location as determined by the Annual Land Use Census.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 5 of 26

,2.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 2.1 Monitoring Program 2.1.1 Controls A. In accordance with Tech Spec 5.5.1, the Radiological Environmental Monitoring Program (REMP) SHALL be conducted as specified in Table 1.

B. Radioanalysis SHALL be conducted meeting the requirements of Table 3.

2.1.2 Applicability At all times.

2.1.3 Action A. Whenever the Radiological Environmental Monitoring Program is not being conducted as specified in Table 1 the Annual Radiological Environmental Operating Report SHALL include a description of the reasons for not conducting the program as required and plans for preventing a recurrence.

B. Deviations are permitted from the required sampling schedule if samples are unobtainable due to hazardous conditions, seasonable unavailability, or to malfunctions of automatic sampling equipment. Ifthe latter occurs, every effort SHALL be made to complete corrective action prior to the end of the next sampling period.

C. With the level of radioactivity in an environmental sampling medium exceeding the reporting levels of Table 2 when averaged over any calendar quarter, submit a special report to the Commission within 30 days from the end of the affected calendar quarter. When more than one of the radionuclides in Table 2 are detected in the sampling medium, this report SHALL be submitted if:

concentration (1) concentration (2) limit, l ---------

(1)----- l >1.0 limit-level (1) limit level (2)

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 6 of 26 When radionuclides other than those in Table 2 are detected and are the result of plant effluents, this report SHALL be submitted if the potential annual dose to an individual is equal to or greater than the calendar year limits of ODCM-02.01 (LIQUID EFFLUENTS) Control 1.2.1.A, ODC-M-03.01 (GASEOUS EFFLUENTS) Control 1.2.1.A, or ODCM-03.01 Control 1.3.1.A.

This report is not required if the measured level of radioactivity was not the result of plant effluents; however, in such an event, the condition SHALL be reported and described in the Annual Radiological Environmental Operating Report.

D. Although deviations from the sampling schedule are permitted under Paragraph B. above, whenever milk or broad leaf vegetation samples can no longer be obtained from the designated sample locations required by Table 1, the Annual Radiological Environmental Operating Report SHALL explain why the samples can no longer be obtained and identify the new locations which have been or will be added to and deleted from the monitoring program.

2.1.4 Surveillance Requirements The radiological environmental monitoring samples SHALL be collected pursuant to Table 1 from the specific locations in Table 4 and SHALL be analyzed pursuant to the requirements of Table 1 and the detection capabilities required by Table 3.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 7 of 26 2.2 Land Use Census 2.2.1 Controls A Land Use Census SHALL be conducted and SHALL identify:

A. The location of the nearest milk animal, the nearest residence, and the nearest garden of greater than 500 ft2 producing broad leaf vegetables in each of the 16 meteorological sectors within a distance of 5 miles.

B. The location of ALL milk animals and ALL 500 ft2 or greater gardens producing broad leaf vegetables in each of the meteorological sectors within a distance of 3 miles.

2.2.2 Applicability At all times.

2.2.3 Action A. With a Land Use Census identifying a location which yields a calculated dose or dose commitment (via the same exposure pathway) 20 percent greater than at a location from which samples are currently being obtained in accordance with Controls 2.1.1 .A,the Annual Radioactive Effluent Release Report for this period SHALL identify the new location. The new location SHALL be added to the Radiological Environmental Monitoring Program within 30 days. The sampling location, excluding the control station location, having the lowest calculated dose or dose commitment (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.

2.2.4 Surveillance Requirements A. The Land Use Census SHALL be conducted at least once per year between the dates of May 1 and October 31 by door to door survey, aerial survey, or by consulting local agricultural associations.

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0 MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 8 of 26 2.3 SamDling Table 1 and Figure 1 specify the current sampling locations for the radiological environmental monitoring program. These sampling locations are based on the latest land use census and the Site Groundwater Characterization Study.

2.3.1 Land Use Census A. Ifit is learned from an annual census that milk animals or gardens are present at the location which yields a calculated thyroid dose greater than those locations previously sampled, the new milk animal or garden locations resulting in the higher calculated doses SHALL be added to the surveillance program as soon as practicable. Sample locations (except the control) having lower calculated doses may be dropped from the program at the end of the grazing or growing season (October 31) to keep the total number of sample locations constant.

B. Ifthe plant begins routine discharges of liquid radioactive effluent into the Mississippi River, a land use survey will be conducted to determine whether any crops are irrigated with water taken from the Mississippi River between the plant discharge canal and a point 5 miles downstream. Ifedible crops are being irrigated from Mississippi River water, appropriate samples will be collected and analyzed per Table 1.

2.3.2 Site Groundwater Characterization Study Review of the available groundwater piezometric data shows that shallow groundwater generally flows toward the Mississippi River, and possible upward flow gradients are present from the deep groundwater aquifer toward the shallow groundwater at the MNGP site. Therefore, any tritium releases into the subsoil environment should move towards the Mississippi River in the shallow groundwater without potentially impacting the deeper groundwater in rock. The average velocity of shallow groundwater flow is estimated at approximately 3 feet per day.

A system of sixteen additional shallow groundwater monitoring wells T 5,f was installed, identified as M-36 through M-40 and M-44 through M-54, to complement existing groundwater monitoring wells identified as M-33, M-34 and M-35. This monitoring system will effectively confirm the shallow groundwater flow directions during the year and will help to demonstrate that the potential impact of any releases within the plant area on groundwater inland of the plant is negligible.

M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 9 of 26 2.4 Interlaboratory Comparison Pro-gram 2.4.1 Controls A. Analyses SHALL be performed on radioactive materials supplied as part of a NIST traceable cross-check program. This program involves the analyses of samples provided by a control laboratory and comparison of results with those of the control laboratory as well as with other laboratories which receive portions of the same samples. Media used in this program (air, milk, water, etc.)

SHALL be limited to those found in the Radiological Environmental Monitoring Program.

2.4.2 Applicability At all times.

2.4.3 Action A. When required analyses are not performed, corrective action SHALL be reported in the Annual Radiological Environmental Operating Report.

2.4.4 Surveillance Requirements A. The summary results of analyses performed as part of the above required program SHALL be included in the Annual Radiological Environmental Operating Report.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 10 of 26 2.5 Bases 2.5.1 Monitoring Program Control 2.1.1 provides measurements of radiation and radioactive materials in those exposure pathways and for those radionuclides which lead to the highest potential radiation exposures of individuals resulting from the plant operation. This program thereby supplements the radiological effluent monitoring 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 modeling of the environmental exposure pathways. After a specific program has been in effect for at least 3 years of operation, program changes may be initiated based on this experience.

The detection capabilities required by Table 1 are state-of-the art for routine environmental measurements in industrial laboratories. The LLDs for"drinking water meet the requirement of 40CFR Part 141.

2.5.2 Land Use Census Control 2.2.1 is provided to ensure that changes in the use of off-site areas are identified and that modifications to the monitoring program are made ifrequired by the results of this census. The best survey information from door-to-door, aerial or consulting with local agricultural associations SHALL be used. This census satisfies the requirements of Section IV.B.3 of Appendix I to 10CFR Part 50. Restricting the census to gardens of greater than 500 square feet provides assurance that significant exposure pathways via broad leaf vegetables will be identified and monitored since a garden of this size is the minimum required to produce the quantity (26 kg/year) of broad leaf vegetables assumed in Regulatory Guide 1.109 for consumption by a child. To determine this minimum garden size, the following assumptions were used: 1) that 20% of the garden was used for growing broad leaf vegetables (i.e., similar to lettuce and cabbage), and 2) a vegetation yield of 2 kg/square meter.

2.5.3 Sampling Section 2.3.1.B. is worded to conform to LAR-39 and its associated NRC Safety Evaluation (SER).

2.5.4 Interlaboratory Comparison Pro-gram The requirement for participation in an interlaboratory comparison program is provided to ensure that independent checks on the precision and accuracy of the measurements of radioactive material in environmental sample matrices are performed as part of a quality assurance program for environmental monitoring in order to demonstrate that the results are reasonably valid.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 11 of 26 Figure 1 Radiation Environmental Monitoring Program Sampling Locations 9/0-M/eak

MONTICELLO NUCLEAR GENERA TING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 I MONITORING PROGRAM Page 12 of 26 Figure 2 4 - 5 Mile Ring, Control and Special Interest TLD Locations I

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 13 of 26 Figure 3 Site Boundary TLD Locations I

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 14 of 26 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis 2)

> Cd) C:. CM U~. C

-0C: Cu '

a Cl') 0 cu Cn- ~~~~~c

)C ~)C (Du02 a)

Cu C: E 4-- Cu.

-. <0D 0 .0 0 cu Cru - ' W

0. 0 >,' 1 0 Cu Cu u0 "= o.

M M U) O~O~ a)~ E.2 dr- u (D:J - 0C CU c (0 0 2 C.) CD VCu (U i

0)- ECu >,C DC: C/)

cn~ 0 2).2 ._.0 Cu Cu 00 C3 CD 0)

Cu 0 a) a C ) CDV CL=

C - -a a)

E a) -

0 Cl)

'au C CU. (D E0 .

Cu CuL M0 -

U)C0 C 0 CcuC 0 cu C.)n

-0 Ch .00O 4.-- -0 >

Cu- a)7 0Ca) -0. Cu Cu >~ E E' a) "-0 0 00 EQ "I -0 > CYuC CU 0) Cu n

~00 a) qcu Cu L) 0 tM- wCC z-0 U) UC) :3 Cu - 0 )C oCV. 5 o E. m CuU) ~ u0 Cuý>~0 Cuv.

C) :3 CY a .C C )C)4 C) 0) "- CLo Ca d-CU Ccuu Eu cu CEE1 C.2 >.u2.c5 a C 0 n -c C/00U0cn"C 06 C 0 U)v 0 0.

C 0cr.

CLi 4--4 C..,

M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 15 of 26 . I Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (Cont'd)

C-,

-309 ._. -r 0 a_ 0u 6. -- 0 l 0,0 c-<( E*c ._h>, "! >,-

L6 I- OcE I- L- E a M U) U) U 0

(D (D0 C-a E - U) 0 0- - .W ._

0- (D c a)

Ca) CM L) ci .CDI U)_.I Cn U)'....

aE-OC094 )

cuMo"*I) 0 0>L D~ CU,0 __*C 0- 0C-0

__ . E = _j- -

-a.2 Eý 0c a) o= .2 -_E0 0

c*a)a) 0t'--__E-

"a = :' -

U4) -r-3,com=._U)

)

... , *a(0 a)_ "CJ o

0 o c 8 =E-n -90. c* a o T U) 09t ' C: E *a) M_.: (U M,M C 0

--- t 9 x0'."

O 2"-c 0 E C3 -' C Cc - ! Zo)0 C- d)

E ) .a)c'--E - o) a) zfU -0U)0 C

0) " - 73 CE C

'C C Cn r-)

0U) 0 Dcc L)

-CM 0~

Cc DC E

x U)

LU M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 I MONITORING PROGRAM Page 16 of 26 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (Cont'd)

(U aCa) C 0O 4-- (a C wu<>,

M --

"U 0 0

-)

"C.:

0 ~ "30 U-ff* CU W* fi CU 0.Q o 0oj

". 0 0 -a C

a) 00 0 0 5* M o -r 0F V d 0- E wu-- 0 -U-00 EUo. >, ,-,

0M *-C < C> cuu E -E -- E -,--oE

-Lo cu* Eý-oo0E CD 'M 70

O o --.0 *I-co*

00 C 0 UD) dU)

CLL CutL. C a)U o a 0 CE crO, CU

) 00u C CU)

OE E

cc 0 0 C(

03 Qd)

Ou- C u oc *'o:E c: cuo U:o 0=- U)0C u 0 a c (U

- "f U) CD) C)~L..

CCC L) CLuU "5o * £-"C E-. I E Ca U)U) E Cz0CL.-ECU

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=

U) f8 E

0 0 0 CU 0)

C= 0 U) 13(0 0 0 C, f- C Eo

-0 Cr" C5 0

U)U) E

0. Cu U)

(_5 x 0 U)

°o U)

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 I MONITORING PROGRAM Page 17 of 26 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (Cont'd)

-C VCL)

0) 0)0D O.U) .0-5 o0.0.C-*_

0U

) C:

0) 2 0 0 0 0 .5,

-U) 0C CLL *-E) E 0>. . 0 ,, 0 C 0Co ) E U CU C: C.. *U 0 U3 M0)

I- 0)a

E.Gt-0"0 C")

CU .0 0) 00)c Cý 0)

CU)

.C E0) -a0 0E-.- C 0)

C Eý "U)C V U)

(V C MCC a- - 0 CUL a) 0) .a) 0)

C.)

0)

EE E m) cmCU.) E.-

000 U) 0 0 ) ca= E.- a0)

EEE Cn - ca U a U) Cn a0 )

0 E C U) 2) 0C md)= 0 0)U) r-U) 4---

00a) 700 a) A .ý E2 2 E 4- :3 4-- CSO o-00 0 -ffC.) 0 ca CL ED0)

=)

0 E~i (Dý 4--

-TU CU"

> .C 00)a E E C

-U Z " "

00) 0)

W > I- C\'J a)~ -f 0 -

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.0 a) a)

a-C C0 C:C 0ý-V 0 r U) C 0 CU.. 0. oý oC:C : CX.

C-)

V U) a)

CU(

C .0 0 C0 ) 0 0) a) V a) U)

C 0)

OC d)l

0) '.

U)> E x 0C LU

.(

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 18 of 26 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (Cont'd)

C-)

(U C

CV 0 L 02 O* ,_ Ca, U a, .- a, a CU 04 La,)

E" 0.

C*,o. E CO VD a)

E3 0 ca U)

C L CC a) Cc t-0 a)

C-a a, E

U) -2 E 0

a0 C,)

a, a CU a,)

COC Ia, c'.

-o 2i) E~

"a.2 Cn.2_

!E. CD) o E >,t5 2 E c U)

(D-0 U) 0a)

-a, C a, E u)(D- , E a0 nn.7 aaCc oD(D0ME'._6 Cl) - a, 0 "a - 0 cu E 0 > 0)'-

Ch)

C-C Cc- -C -0 .o

-a C 0 E--

U)

C C/C 0r 00 4C U-a; x

uJ V6 4

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 19 of 26 Table 2 Reporting Levels for Radioactivity Concentrations in Environmental Samples (Reporting Levels)

U) a x x )<

co) C) ) C x

co)

0 C)0 0 0 0 00 0 C)

.0 coE ~ )' Cu 0G E

a)

Ch Cu-U)

UC:

0- =CU U;)

Lcn E Co N)

(

C)

C) C) N)

C)

N CNC Cn LO -

~CU

( u

" 0)

.0.=

m co' C) LO j-0 Noo C -0 M I 0u.0 0:

V) u-0< 0 LA N0 - Cu0 M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 20 of 26 Table 3 Maximum Values for the Lower Limits of Detection (LLD)

O L0 C,,

00

'-C)Co C)

0*

00.

U-

-~0 0 0 0 0 M~ co co~ ioc FL d) aCcX X )<

0L

-~00 C)D LO~z C~) LO ) LO 7 - MC 0 C-..

CCD a) U C 0D CD z

< d) C _M

)

0 U LL NC '

mt 0CD (U) (OU)co

0) co) CO CD CD Co 0')

M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 21 of 26 Table 3 Maximum Values for the Lower Limits of Detection (LLD) (Cont'd)

Cu tuo U:)

4-0 U-)U E co*0 (U oc Cis E 0)-1 C6u U)

.E- Cu6e

"-0 CU 0r-'M - CL Cu CL W)U 0 E 2-0 E 0 cQCh 0-0 a0 CD cc a) Cl) 2 C-Ca)

0. o CL CL U)D0 C a.) *C 0 (n .0 cu0 (C4--Or".C 2 E E (U

ag0 >

0 0 -

Cu: C.) V-7 C.) )- 0 C

- CU I- CUl. 0 C 0 t0 z CU-~

a) Co>

0

=

0"0 U

0C.

Lii .0 -- .C C-(a0 C 0-Cc "0 C- -. '- 0 CUU)_ L)0 C02 CU .- 0 Co e_

Ul) ' U)

F- D U) :3 a) 0 UL

- U-0 U-. C U)

C) 2, E

0)

C

>,x a) " c> Ca Eo- - _ U)U

_0. 0 0U CLNC U) (n U) CL C 0 > C E =0-Cu 0 C. -C =: 0- 00CL C: 0)0Q C. en (U) 0)

Cu Z-~ 0 - W~ W Cu) ca 0> 0 a)0Cu C C 7E 0-o.~eo>*-,e >, CUE 0 CuLL? e 4-- ..- Cu -C E en 0 C U "CU- C a) (n C 0--

00 U)0 E (0 N U- ACu-

-0. IR Ný 2c E %J 0)

U0 0 W-.

CU)

CD- .It CU CU

-a)E.o Fu (DC 4-0 -0 CU)U E

Cu3 CU 70 C

0 0- ~CoU-C CnL) r 0 0) 0- U)O U)

.2 ca U) C a) ." ? a) Co Cu CV.tCa II ca 0

0' . 0 3

~cacU) u n a)

3 E CU

..J a) 0 Cu CL

-J -j A Cu 70 "4- 10 I-a) a).0 -0 2 U) C 03 0

~JCL oj '0 C-(A ca 0.

- - CN en C.4 j

.D en :3 -J a)

LL 0 -J a)

I I I I

.0 0 -o U M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 22 of 26 Table 4 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sampling Locations Location Distance Compass Type of Sample Code Collection Site Miles Heading Sector River water M-8c Upstream of plant w/in 1000 ft upstream of plant intake River water M-9 Downstream of plant w/in 1000 ft downstream of plant discharge Drinking water M-14 City of Minneapolis 37.0 132 SE Drinking water M-43c lmholte Farm 12.3 313 NW Drinking water M-11 City of Monticello 3.3 127 SE Drinking water M-12 Plant Well No. 11 0.26 252 WSW Drinking water M-27 Wise Residence 0.64 207 SSW Ground water M-33 Monitoring Well No. 1 0.11 299 WNW Ground water M-34 Monitoring Well No. 2 0.14 301 WNW Ground water M-35 Monitoring Well No. 3 0.15 305 NW Ground water M-36 Monitoring Well No. 4 0.1 25 NNE Ground water M-37 Monitoring Well No. 5 0.1 253 WSW Ground water M-38 Monitoring Well No. 6 229 ft 228 SW Ground water M-39 Monitoring Well No. 7 0.2 66 ENE Ground water M-40 Monitoring Well No. 8 0.3 150 SSE Ground water M-44 Monitoring Well No. 9 0.1 310 NW Ground water M-51 Monitoring Well No. 9B 0.1 310 NW Ground water M-45 Monitoring Well No. 10 0.1 292 WNW Ground water M-46 Monitoring Well No. 11 0.1 283 WNW Ground water M-47 Monitoring Well No. 12A 0.1 330 NW Ground water M-48 Monitoring Well No. 12B 0.1 326 NW Ground water M-49 Monitoring Well No. 13A 0.12 316 NW Ground water M-50 Monitoring Well No. 13B 0.12 316 NW Ground water M-52 Monitoring Well No. 14 0.17 306 NW Ground water Monitoring Well No. 15A 751 ft ~~5ek4lur M-53 14 NNE Ground water M-54 Monitoring Well No. 15B 750 ft 14 NNE A4~

~

Sediment-River M-8c Upstream of plant w/in 1000 ft upstream of plant intake Sediment-River M-9 Downstream of plant w/in 1000 ft downstream of plant discharge Sediment-Shoreline M-15 Montissippi Park 1.27 114 ESE M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 23 of 26 Table 4 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sampling Locations (Cont'd)

Location Distance Compass Type of Sample Code Collection Site Miles Heading Sector Periphyton or M-8c Upstream of plant w/in 1000 ft upstream of plant intake Macroinver- M-9 Downstream of plant w/in 1000 ft downstream of plant tebrates discharge Fish M-8c Upstream of plant w/in 1000 ft upstream of plant intake Fish M-9 Downstream of plant w/in 1000 ft downstream of plant discharge Goat Milk M-16 Kitzman Farm 3.0 165 SSE Goat Milk M-17c Greninger Farm 7.8 250 WSW Vegetation M-41 Training Center 0.8 151 SSE Vegetation M-42 Biology Station Road 0.6 134 SE Vegetation M-43c Imholte Farm 12.3 313 NW Cultivated crops (broad leaf vegetables) a,c Available Producer >10.0 M-27 Highest D/Q Garden** 1.1 147 SSE IT,,

(corn)*

(potatoes)* ,

Collected only if plant discharges radioactive effluent into the river, then only from river irrigated fields. (See Section 2.1)

As determined by Annual Land Use Census.

Particulates and Radio-iodine (air) M-lc Air Station M-1 11.0 307 NW (air) M-2 Air Station M-2 0.8 140 SE (air) M-3 Air Station M-3 0.6 104 ESE (air) M-4 Air Station M-4 0.8 147 SSE (air) M-5 Air Station M-5 2.6 134 SE M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 24 of 26 Table 4 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sampling Locations (Cont'd)

Location Distance Compass Type of Sample Code Collection Site Miles Heading Sector Direct Radiation - (general area of the site boundary)

(TLD) M01A Sherburne Ave. So. 0.75 353 N (TLD) M02A Sherburne Ave. So. 0.79 23 NNE (TLD)

(TLD)

M03A M04A M05A M06A M07A M08A Sherburne Ave. So.

Biology Station Rd.

Parking Lot H Parking Lot F 1.29 0.5 0.48 0.54 0.47 0.45 56 92 122 138 158 175 NE E

ESE SE SSE S

I (TLD) M09A County Road 75 0.38 206 SSW (TLD) M10A County Road 75 0.38 224 SW (TLD) M11A County Road 75 0.4 237 WSW *~.

9d~k~ ~4A~

(TLD) M12A County Road 75 0.5 262 W (TLD) M13A North Boundary Rd. 0.89 322 NW IAt,)JJ /1tc (TLD) M14A North Boundary Rd. 0.78 335 NNW Direct Radiation - (about 4 to 5 miles distant from the plant)

(TLD) M01B 117th Street 4.65 1 N (TLD) M02B County Road 11 4.4 18 NNE (TLD) M03B County Rd. 73 & 81 4.3 51 NE (TLD) M04B County Rd. 73 (196th 4.2 67 ENE Street)

(TLD) M05B City of Big Lake 4.3 89 E (TLD) M06B County Rd 14 & 4.3 117 ESE 196th Street (TLD) M07B Monticello Industrial 4.3 136 SE Dr.

(TLD) M08B Residence Hwy 25 & 4.6 162 SSE Davidson Ave (TLD) M09B Weinand Farm 4.7 178 S M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 25 of 26 Table 4 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sampling Locations (Cont'd)

Location Distance Compass Type of Sample Code Collection Site Miles Heading Sector (TLD) M10B Reisewitz Farm - 4.2 204 SSW Acacia Ave (TLD) M11B Vanlith Farm - 97th 4.0 228 SW Ave (TLD) M12B Lake Maria St. Park 4.2 254 WSW (TLD) M13B Bridgewater Sta. 4.1 270 W (TLD) M14B Anderson Res. - Cty 4.3 289 WNW Rd 111 (TLD) M15B Red Oak Wild Bird 4.3 309 NW Farm (TLD) M16B Sand Plain Research 4.4 341 NNW Farm Direct Radiation - (special interest locations)

(TLD) Mo0S Osowski Fun Market 0.66 241 WSW (TLD) M02S Krone Residence 0.5 220 SW (TLD) M03S Big Oaks Park 1.53 103 ESE (TLD) M04S Pinewood School 2.3 131 SE (TLD) M05S Rivercrest Christian 3.0 118 ESE Academy Monticello Public (TLD) M06S Works 2.6 134 SE (TLD) M01C Kirchenbauer Farm 11.5 323 NW (TLD) M02C Cty Rd 4 & 15 11.2 47 NE (TLD) M03C Cty Rd 19 & Jason Ave 11.6 130 SE (TLD) M04C Maple Lake Water Tower 10.3 226 SW M/eak

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 21 MONITORING PROGRAM Page 26 of 26.

Table 4 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sampling Locations (Cont'd)

Type of Sample Code Location (TLD) ISFSI-1 (neutron) and 1-01 (gamma) NE corner of ISFSI (TLD) ISFSI-2 (neutron) and 1-02 (gamma) North side of ISFSI, center (TLD) ISFSI-3 (neutron) and 1-03 (gamma) NW corner of ISFSI (TLD) ISFSI-4 (neutron) and 1-04 (gamma) West side of ISFSI, middle (TLD) ISFSI-5 (neutron) and 1-05 (gamma) West side of ISFSI, at center of array (TLD) ISFSI-6 (neutron) and 1-06 (gamma) SW corner of ISFSI (TLD) ISFSI-7 (neutron) and 1-07 (gamma) South side of ISFSI, center (TLD) ISFSI-8 (neutron) and 1-08 (gamma) SE corner of ISFSI (TLD) ISFSI-9 (neutron) and 1-09 (gamma) East side of ISFSI, at center of array (TLD) ISFSI-10 (neutron) and 1-10 (gamma) East side of ISFSI, middle (TLD) ISFSI-1 1 (neutron) and I-11 (gamma) OCA fence south, on exit road (TLD) ISFSI-12 (neutron) and 1-12 (gamma) OCA fence middle, on exit road (TLD) ISFSI-13 (neutron) and 1-13 (gamma) OCA fence north, on exit road (TLD) ISFSI-14 (neutron) Posted with TLD M12A (TLD) ISFSI-15 (neutron) Posted with TLD M1OA (TLD) ISFSI-16 (neutron) Posted with TLD M02S (TLD) Neutron Control A Posted with TLD M03C (TLD) Neutron Control B Posted with TLD M04C (TLD) Neutron Control C Posted with TLD M02C (TLD) Neutron Control D Posted with TLD M01C Notes on Table 4:

"c" denotes control locations. All other locations are indicator locations.

"a" Control "broad leaf' vegetable will be taken in locations as available outside 10 mi.

EPZ.

The letters after TLD code numbers have the following meanings:

A Locations in the general area of the site boundary; B Locations about 4 to 5 miles distant from the plant C Locations of control TLDs greater than 10 miles from the plant; S Special interest locations.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 8 Page 1 of 8 Approval: PCR 01345940 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 R ECO RD O F R EV ISIO N .................................................................................... 2 2.0 REPO RTING REQ UIREM ENTS .......................................................................... 3 2.1 Radioactive Effluent Release Report ........................................................ 3 2.2 Radiological Environmental Operating Report ......................................... 4 2.3 Annual Summary of Meteorological Data .................................................. 6 2.4 Industry Initiative on Groundwater Protection ............................................ 6 2.5 R ecord R etention ....................................................................................... 8 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 8 Page 2 of 8 1.0 RECORD OF REVISION Revision No. Date Reason for Revision October - 2000 Moved previous ODCM-08.01 contents to ODCM-APP-B, Rev 0. Changed this section name to "REPORTING REQUIREMENTS" and incorporated applicable sections of T.S. sections 6.6.A, 6.6.B, 6.7.A.4, 6.7.A.5, and 6.7.C into this document.

February - 2005 Corrected above revision number to Revision 1. Changed 2.5.1. from T.S.6.6.A to OQAP, section 19.12.1. Changed 2.5.2.

from T.S.6.6.B to OQAP, section 19.12.2.

June - 2005 Incorporated changes made during the conversion of the Current Technical Specifications to the Improved Technical Specifications. This includes dual step annotation.

January - 2007 Incorporated NEI Enhanced Groundwater Protection initiative reporting requirements.

Changed 2.5.1 to remove reference to OQAP and refer to Fleet Procedure FP-G-RM-01 (RECORDS MANAGEMENT).

Incorporated 2.5.2 into 2.5.1.

January - 2009 Added NEI to agencies to be notified as part of voluntary communication. Revised voluntary communication criteria per NEI 07-07[Final], August, 2007.

January - 2010 Added reporting requirements, per NEI-07-07 (August 2007), in sections 2.1.10 and 2.2.9.

December - 2011 Revised information to be included for solid waste shipped off-site on the Radioactive Effluent Release Report; sections 2.1.5.E and' F.

July 2012 Enhanced reporting requirements in section 2.2.2 to clarify the data that is required to be in the annual report. This enhancement is a result of CAP 01343310.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 8 Page 3 of 8 2.0 REPORTING REQUIREMENTS 2.1 Radioactive Effluent Release Report In accordance with Tech Spec 5.6.2, the Radioactive Effluent Release Report covering the operation of the unit SHALL be submitted in accordance with 10CFR 50.36A.

2.1.1 The Radioactive Effluent Release Report covering the operation of the unit during the previous calendar year SHALL be submitted prior to May 15 of each calendar year.

2.1.2 The Radioactive Effluent Release Report SHALL include a summary of the quantities of radioactive liquid and gaseous effluents and solid waste released as outlined in Appendix B of Regulatory Guide 1.21, Revision 1, June, 1974, with the data summarized on a quarterly basis.

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. The missing data SHALL be submitted as soon as possible in a supplementary report.

2.1.3 The Radioactive Effluent Release Report SHALL include an assessment of the radiation doses from radioactive effluents released from the unit during the previous calendar year. This report SHALL also include an assessment of the radiation doses from radioactive liquid and gaseous effluents to the individuals due to their activities inside the site boundary (ODCM-02.01 Figure 1 and ODCM-03.01 Figure 1) during the report period. All assumptions used in making these assessments (i.e., specific activity, exposure time and location)

SHALL be included in the reports. The assessment of radiation doses SHALL be performed in accordance with the ODCM or standard NRC computer codes.

2.1.4 The Radioactive Effluent Release Report SHALL also include an assessment of radiation doses to the most likely exposed member of the public from reactor releases and other nearby uranium fuel cycle sources (including doses from primary effluent pathways and direct radiation) for the previous 12 consecutive months to show compliance with 40CFR190, Environmental Radiation Protection Standards for Nuclear Power Operation.

2.1.5 The Radioactive Effluent Release Report SHALL include the following information for solid waste shipped off-site during the report period.

A. Container volume B. Total curie quantity (specify whether determined by measurements or estimate),

C. Principal radionuclides (specify whether determined by measurement or estimate),

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 8 1Page 4 of 8 D. Type of waste (e.g., spent resin, compacted dry waste),

E. Mode of Transportation.

F. Transportation Destination.

2.1.6 The Radioactive Effluent Release Report SHALL include unplanned releases from the site of radioactive materials in gaseous and liquid effluents on a quarterly basis.

2.1.7 The Radioactive Effluent Release Report SHALL include a description of changes to the PCP.

2.1.8 The Radioactive Effluent Release Report SHALL contain a report of when milk or leafy green vegetable samples specified in ODCM-07.01 Table 1 cannot be obtained from the designated sample locations, and identify the new locations added to and deleted from the monitoring program.

2.1.9 The Radioactive Effluent Release Report SHALL identify Land Use Census identified locations which yield a calculated dose or dose commitment (via the same exposure pathway) 20 percent greater than at a location from which samples are currently being obtained in accordance with ODCM-07.01 Control 2.1.1.

2.1.10 The Radioactive Effluent Release Report SHALL include on-site ground water sample results for:

A. Samples that are taken in support of the Industry Initiative but are not part of the REMP program; and B. Samples from long-term monitoring sample points that are not included in the REMP.

2.1.11 The Radioactive Effluent Release Report SHALL include a description of all leaks or spills that are communicated per section 2.4.2.

2.2 Radiological Environmental Operating Report In accordance with Tech Spec 5.6.1, the Annual Radiological Environmental Operating Report covering the operation of the off-site monitoring program SHALL be submitted and SHALL include:

2.2.1 The Annual Radiological Environmental Operating Report covering the operation of the site during the previous calendar year SHALL be submitted by May 15 of each year. The report SHALL include summaries, interpretations, and analyses 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 Offsite Dose Calculation Manual (ODCM), and in 10CFR50, Appendix I, Sections IV.B.2, IV.B.3, and IV.C.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 8 Page 5 of 8 2.2.2 The Annual Radiological Environmental Operating Report SHALL include the results of analyses of all radiological environmental samples and of all environmental radiation measurements taken during the period pursuant to the locations specified in the table and figures in the ODCM, summarized and tabulated in the format of the table in the Radiological Assessment Branch Technical Position, Revision 1, ii ~

November 1979. In the event that some individual results are not available for inclusion with the report, the report SHALL be submitted noting and explaining the reasons for the missing results. The missing data SHALL be submitted in a supplementary report as soon as possible.

2.2.3 The report SHALL also include the results of the land use census required by ODCM-07.01 Control 2.2.1. If harmful effects or evidence of irreversible damage are detected by the monitoring, the report SHALL provide an analysis of the problem and a planned course of action to alleviate the problem.

2.2.4 The Radiological Environmental Operating Report SHALL include the following: a summary description of the Radiological Environmental Monitoring Program; a map of sampling locations keyed to a table giving distances and directions from the reactor; and the results of licensee participation in the Interlaboratory Comparison Program, required by ODCM-07.01 Control 2.4.1.A.

2.2.5 The Radiological Environmental Operating Report SHALL include reasons for all deviations from the REMP sampling program as specified in ODCM-07.01 Table 1 and plans for the prevention of a recurrence, if applicable.

2.2.6 Ifthe level of radioactivity in an environmental sampling medium at a specified location exceeds the reporting levels of ODCM-07.01 Table 2 for the sample type specified in ODCM-07.01 Table 1 and is NOT the result of plant effluents, the condition SHALL be reported in the Radiological Environmental Operating Report.

2.2.7 A summary of the Interlaboratory Comparison Program SHALL be included in the Radiological Environmental Operating Report. Ifthe required Interlaboratory Comparison Program analyses are NOT performed, corrective action SHALL be reported in the Radiological Environmental Operating Report.

2.2.8 The Radiological Environmental Operating Report SHALL NOT include the complete analysis data tables. These tables contain the results of each sample analysis and SHALL be maintained by the licensee.

2.2.9 The Radiological Environmental Operating Report SHALL include all on-site and off-site ground water sample results that exceeded the ODCM criteria for 30-day reporting that were communicated per section 2.4.2.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 8 1Page 6 of 8 2.3 Annual Summary of Meteorological Data The annual summary of meteorological data SHALL be submitted for the previous calendar year in the form of joint frequency tables of wind speed, wind direction, and atmospheric stability at the request of the Nuclear Regulatory Commission.

2.4 Industry Initiative on Groundwater Protection NOTE: For purposes of this section, groundwater is defined as any subsurface moisture or water, regardless of where it is located beneath the earths surface; any water located in wells, regardless of depth, type, or whether it is potable; water in storm drains, unless it has been demonstrated that the storm drains do not leak to ground; and water in sumps that communicate with subsurface water.

2.4.1 30-day report to NRC A. Submit the NRC within 30 days, a special report for any on-site or off-site groundwater sample that:

1. Exceeds the ODCM criteria for 30-day reporting for off-site samples; and

2. Could potentially reach groundwater that is or could be used in the future as a source of drinking water. Any groundwater that is potable should be considered as a potential source of drinking water.

B. Include the following items in the report:

1. A statement that the report is being submitted as part of NEI Enhanced Groundwater Protection Initiative;

2. Level and nature of the contaminant;

3. Actions taken and related sample results to date;

4. Determination of potential or bounding annual dose to a member of the public; and

5. Any necessary corrective actions to be taken to reduce the potential annual dose to a member of the public to less than the calendar year limits of the ODCM.

C. Concurrently, provide copies of the 30-day written report to the designated State and Local Officials.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 8 Page 7 of 8 2.4.2 Voluntary Communications to State/Local Officials A. Make informal communications by the end of next business day to the designated State/Local officials ifan inadvertent leak or spill to the environment has or can potentially get into the ground water and exceeds any of the following criteria:

1. Leak or spill exceeds 100 gallons from a source containing licensed material;

2. Volume of spill or leak cannot be quantified but is likely to exceed 100 gallons from a source containing licensed material; or

3. Any leak or spill, regardless of volume or activity, deemed by the licensee to warrant voluntary communication.

B. Communication with the designated State/Local officials SHALL be made before the end of the next business day for a water sample result that meets either of the following criteria:

1. A sample of off-site ground water or surface water exceeds any of the REMP reporting criteria for water; or

2. A sample of on-site surface water, that is hydrologically connected to ground water, or ground water that is or could be used as a source of drinking water, exceeds any REMP reporting criteria for water.

The basis for concluding that the on-site ground water is not or would not be considered a source of drinking water SHALL be documented.

C. When communicating with State/Local officials, be clear and precise in quantifying the actual release information as it applies to the appropriate regulatory criteria. The following information should be provided as part of the communication:

1. That the communication is being made as part of the NEI Enhanced Ground Water Protection Initiative;

2. Date and time of spill, leak, or sample result(s);

3. Whether or not the spill has been contained or the leak has been stopped;

4. Ifknown, the location of the leak or spill or water sample(s);

5. Source of the leak or spill, if known; M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 8 Page 8 of 8

6. List of the contaminant(s) and verified concentration(s);

7. Description of action(s) already taken and a general description of future actions;

8. An estimate of the potential or bounding annual dose to a member of the public, if available; and

9. An estimated time/date to provide additional information or follow-up.

D. Contact NEI by e-mail to GWNotice@nei.org as part of voluntary communication event.

E. Following communication with State/Local officials and NEI, complete a 4-hour 10CFR50.72 NRC notification.

2.5 Record Retention 2.5.1 The following records SHALL be maintained in accordance with FP-G-RM-01 (RECORDS MANAGEMENT) for the life of the corporation plus 10 years:

A. Periodic checks, inspections, tests and calibrations of components and systems as related to the specifications and treatment systems defined in the ODCM.

B. Records of wind speed and direction.

C. Records of reviews performed for changes made to the Offsite Dose Calculation Manual.

D. Liquid and gaseous radioactive releases to the environs.

E. Off-site environmental surveys F. Radioactive shipments M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1 Pagel of74 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 R EC O R D O F R EV IS IO N ..................................................................................... 2 2.0

SUMMARY

OF DISPERSION CALCULATION PROCEDURES .......................... 3 2 .1 Re fe re nce s ............................................................................................... ..4 Table 1 Monticello Release C onditions ....................................................................... 5 Table 2 Distances to Controlling Unrestricted Area Boundary Locations ............... 6 Table 3 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases > 500 Hrs /Yr or >150 Hrs / Qtr .................................... 7 Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases > 500 Hrs/Yr or >150 Hrs/Qtr ........................................... 8 Table 5 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases > 500 Hrs/Yr or >150 Hrs/Qtr ........................................ 16 Table 6 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases > 500 Hrs/Yr or >150 Hrs/Qtr .................................. 24 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases > 500 Hrs/Yr or >150 Hrs/Qtr .................................. 25 Table 8 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases > 500 Hrs/Yr or >150 Hrs/Qtr .................................. 32 Table 9 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases < 500 Hrs/Yr or <150 Hrs/Qtr .................................... 40 Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases < 500 Hrs/Yr or *150 Hrs/Qtr .................................. 42 Table 11 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases < 500 HrsYr or *150 Hrs/Qtr ..................................... 50 Table 12 Monticello Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases < 500 Hrs/Yr or *150 Hrs/Qtr ........................... 58 Table 13 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases < 500 Hrs/Yr or *150 Hrs/Qtr .................................... 59 Table 14 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases < 500 Hrs/Yr or *150 Hrs/Qtr .................................... 67 Approval: PCR 01236257 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1 - Page 2 of 74 1.0 RECORD OF REVISION Revision No. Date Reason for Revision 0 October - 2000 Moved previous ODCM-06.01 tables into this Appendix to make the ODCM easier to use.

1 June - 2010 Various items cleaned up from document conversion to Word.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1Page 3 of 74 2.0

SUMMARY

OF DISPERSION CALCULATION PROCEDURES Updepleted, undecayed dispersion parameters were computed using the computer program XOQDOQ (Sagendorf and Goll, 1977). Specifically, sector average X/Q and D/Q values were obtained for a sector width of 22.5 degrees. Credit was taken for momentum plume rise and effective plume height was adjusted for local terrain height for elevated releases. Building wake corrections were used to adjust calculations for ground-level releases. Standard open terrain recirculation correction factors were also applied as available as default values in XOQDOQ.

Dispersion calculations were based on mixed mode releases for the reactor vent and on elevated releases for the offgas stack. A summary of release conditions used as input to XOQDOQ is presented in Table 1 and controlling site boundary distances are defined in Table 2. Computed X/Q and D/Q values for unrestricted area boundary locations (relative to release points) and for standard distances (to five miles from the source in 0.1 mile increments) are presented in Tables 3 through 11.

For certain meteorological and release conditions, the enveloping interpolation routines in XOQDOQ used to compute short-term X/Q and D/Q values do not provide reasonable results. Because of this, results were reviewed for consistency and where possible, the distributions of calculated X/Q values were enveloped and interpolated by hand.

In some cases, use of the NRC methodology is implemented in XOQDOQ for estimating short term dispersion values results in values which are lower than the annual values. For these cases, the annual average x'/Q and D/Q values are used to conservatively represent short-term values. X/Q and D/Q values for on-site EPA locations were adjusted (multiplied by a factor of 0.238) to account for limited daily exposure of workers in accordance with NUREG-0473M').

On-site meteorological data for the period September 1, 1976 through August 31,1978 (as presented in Appendix B) were used as input to XOQDOQ. Data were collected and AT stability classes were defined in conformance with NRC Regulatory Guide 1.23 (3). Dispersion calculations for the reactor vent were based on AT42.7-10m and 10 meter wind data (joint data recovery of 94 percent). Dispersion calculations for the offgas stack were based on ATio0-i0m and 100 meter wind data (joint data recovery of 95 percent).

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A I TITLE: APPENDIX A Revision 1 1 Page 4 of 74 2.1 References

1. Sagendorf, J. F. and Goll, J. T., XOQDOQ Program for the Evaluation of Routine Effluent Releases at Nuclear Power Stations. NUREG 0324, U.S.

Nuclear Regulatory Commission, September 1977.

2. NUREG-0473

3. USNRC Regulatory Guide 1.23 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 5 of 74 Table 1 Monticello Release Conditions Reactor Vent Off-Gas Stack Release Type Mixed mode (Long and Elevated (Long and short-short-term) term)

Release point height, m 42 100 Adjacent building height, m 42 42 Relative location to adjacent struc- Adjacent to 400' SE of tures Turbine Building Reactor Building Exit velocity, m/Sec 6.1 19.0 Internal stack diameter, m 2.41 0.36 Building cross-sectional area*, M2 1480 N/A Purge frequency**, times per year 6 6 Purge duration**, hours/release 24 24

Applied to ground level releases.

- Applied to short-term calculations only.

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I MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A I TITLE: APPENDIX A Revision 1 1 IPage 6 of 74 Table 2 Distances to Controlling Unrestricted Area Boundary Locations Miles Column 1 Column 2*

As measured from Reactor Vent As Measured from Offgas Stack Sector Distance Sector Distance N 0.51 N 0.59 NNE 0.58 N 0.63 NE 0.65 NNE 0.65 ENE 0.83 ENE 0.78 E 0.59 E 0.50 ESE 0.59 E 0.50 SE 0.61 SSE 0.51 SSE 0.43 S 0.36 S 0.34 SSW 0.31 SSW 0.32 SW 0.33 SW 0.32 SW 0.33 WSW 0.35 WSW 0.38 W 0.48 W 0.56 WNW 0.68 NW 0.78 NW 0.43 NW 0.53 NNW 0.53 NNW 0.61 Locations specified in Column 2 are the same geographic points as specified in Column 1 although the reference points are different.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 7 of 74 Table 3 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

>500 Hrs/Yror>150 Hrs/Qtr Site Boundary Sector* X/Q (sec/m3 ) D/Q (m-2 )

N 2.09E-06 2.89E-08 NNE 1.29E-06 1.82E-08 NE 7.76E-07 9.42E-09 ENE. 6.11E-07 5.62E-09 E 1.38E-06 1.45E-08 ESE 2.42E-06 3.15E-08 SE 2.53E-06 3.30E-08 SSE 4.08E-06 5.95E-08 S 2.30E-06 3.08E-08 SSW 1.80E-06 2.13E-08 SW 1.96E-06 2.54E-08 WSW 1.54E-06 1.72E-08 W 1.10E-06 1.23E-08 WNW 1.22E-06 1.19E-08 NW 2.11E-06 2.61E-08 NNW 1.87E-06 2.55E-08 Period of record: 9-1-76 to 8-31-78

Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 8 of 74 Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr 3

For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m Miles 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Sector*

N 2.94E-05 8.91E-06 4.59E-06 2.98E-06 2.17E-06 1.74E-06 1.46E-06 NNE 1.98E-05 6.24E-06 3.25E-06 2.11E-06 1.55E-06 1.25E-06 1.06E-06 NE 1.22E-05 3.84E-06 2.02E-06 1.33E-06 9.98E-07 8.21 E-07 7.09E-07 ENE 1.25E-05 3.91E-06 2.05E-06 1.35E-06 1.01E-06 8.46E-07 7.44E-07 E 1.97E-05 6.02E-06 3.20E-06 2.16E-06 1.64E-06 1.36E-06 1.19E-06 ESE 3.48E-05 1.05E-05 5.71 E-06 3.89E-06 2.94E-06 2.40E-06 2.04E-06 SE 3.91E-05 1.17E-05 6.34E-06 4.28E-06 3.20E-06 2.57E-06 2.15E-06 SSE 4.15E-05 1.26E-05 6.78E-06 4.52E-06 3.35E-06 2.70E-06 2.28E-06 S 1.60E-05 4.95E-06 2.69E-06 1.82E-06 1.39E-06 1.16E-06 1.02E-06 SSW 1.14E-05 3.54E 1.97E-06 1.39E-06 1.11E-06 9.79E-07 8.94E-07 SW 1.28E-05 3.85E-06 2.15E-06 1.51E-06 1.21E-06 1.06E-06 9.58E-07 WSW 1.08E-05 3.29E-06 1.85E-06 1.32E-06 1.06E-06 9.52E-07 8.89E-07 W 1.21 E-05 3.73E-06 2.01 E-06 1.37E-06 1.07E-06 9.24E-07 8.42E-07 WNW 1.96E-05 6.01E-06 3.24E-06 2.17E-06 1.64E-06 1.37E-06 1.19E-06 NW 2.15E-05 6.49E-06 3.45E-06 2.32E-06 1.76E-06 1.45E-06 1.25E-06 NNW 2.71E-05 8.24E-06 4.24E-06 2.74E-06 2.OOE-06 1.61E-06 1.36E-06 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 9 of 74 Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m3 Miles Sector* 0.8 0.9 1.0 1.1 1.2 1.3 1.4 N 1.21E-06 9.77E-07 8.18E-07 7.OOE-07 6.10E-07 5.39E-07 4.82E-07 NNE 8.85E-07 7.19E-07 6.07E-07 5.24E-07 4.59E-07 4.08E-07 3.66E-07 NE 6.02E-07 4.94E-07 4.19E-07 3.61E-07 3.16E-07 2.80E-07 2.50E-07 ENE 6.46E-07 5.41E-07 4.69E-07 4.13E-07 3.69E-07 3.32E-07 3.02E-07 E 1.02E-06 8.42E-07 7.16E-07 6.20E-07 5.45E-07 4.85E-07 4.35E-07 ESE 1.69E-06 1.35E-06 1.11E-06 9.35E-07 7.99E-07 6.92E-07 6.06E-07 SE 1.76E-06 1.39E-06 1.13E-06 9.46E-07 8.03E-07 6.93E-07 6.04E-07 SSE 1.89E-06 1.51E-06 1.25E-06 1.06E-06 9.14E-07 7.98E-07 7.06E-07 S 8.69E-07 7.17E-07 6.09E-07 5.27E-07 4.63E-07 4.12E-07 3.71E-07 SSW 7.94E-07 6.74E-07 5.85E-07 5.14E-07 4.57E-07 4.10E-07 3.70E-07 SW 8.43E-07 7.09E-07 6.09E-07 5.31E-07 4.68E-07 4.16E-07 3.73E-07 WSW 8.07E-07 6.97E-07 6.12E-07 5.44E-07 4.87E-07 4.39E-07 3.99E-07 W 7.50E-07 6.40E-07 5.59E-07 4.95E-07 4.42E-07 3.99E-07 3.63E-07 WNW 1.02E-06 8.42E-07 7.17E-07 6.22E-07 5.47E-07 4.87E-07 4.38E-07 NW 1.05E-06 8.55E-07 7.15E-07 6.1OE-07 5.29E-07 4.64E-07 4.11E-07 NNW 1.13E-06 9.14E-07 7.68E-07 6.60E-07 5.76E-07 5.10E-07 4.57E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A I TITLE: APPENDIX A Revision 1 1Page 10 of 74 Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m3 Miles 1.5 1.6 1.7 1.8 1.9 2.0 2.1 Sector*

N 4.35E-07 3.91 E-07 3.54E-07 3.23E-07 2.96E-07 2.72E-07 2.52E-07 NNE 3.32E-07 3.OOE-07 2.72E-07 2.49E-07 2.28E-07 2.11E-07 1.95E-07 NE 2.25E-07 2.07E-07 1.92E-07 1.78E-07 1.67E-07 1.57E-07 1.48E-07 ENE 2.77E-07 2.56E-07 2.37E-07 2.21E-07 2.07E-07 1.94E-07 1.83E-07 E 3.94E-07 3.57E-07 3.25E-07 2.97E-07 2.73E-07 2.53E-07 2.34E-07 ESE 5.36E-07 4.78E-07 4.29E-07 3.88E-07 3.53E-07 3.23E-07 2.97E-07 SE 5.33E-07 4.80E-07 4.35E-07 3.97E-07 3.65E-07 3.37E-07 3.12E-07 SSE 6.31E-07 5.63E-07 5.05E-07 4.57E-07 4.16E-07 3.80E-07 3.49E-07 S 3.36E-07 3.03E-07 2.74E-07 2.49E-07 2.28E-07 2.10E-07 1.94E-07 SSW 3.37E-07 3.20E-07 3.05E-07 2.92E-07 2.81E-07 2.71E-07 2.62E-07 SW 3.37E-07 3.17E-07 2.99E-07 2.83E-07 2.70E-07 2.58E-07 2.47E-07 WSW 3.64E-07 3.44E-07 3.26E-07 3.10E-07 2.95E-07 2.82E-07 2.71E-07 W 3.32E-07 3.16E-07 3.01E-07 2.89E-07 2.78E-07 2.69E-07 2.61E-07 WNW 3.97E-07 3.74E-07 3.54E-07 3.37E-07 3.23E-07 3.12E-07 3.02E-07 NW 3.68E-07 3.33E-07 3.03E-07 2.78E-07 2.57E-07 2.38E-07 2.21E-07 NNW 4.13E-07 3.73E-07 3.39E-07 3.1OE-07 2.85E-07 2.63E-07 2.44E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 11 of 74 Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m3 Miles Sector* 2.2 2.3 2.4 2.5 2.6 2.7 2.8 N 2.34E-07 2.18E-07 2.04E-07 1.92E-07 1.83E-07 1.75E-07 1.68E-07 NNE 1.82E-07 1.70E-07 1.59E-07 1.50E-07 1.41 E-07 1.33E-07 1.26E-07 NE 1.40E-07 1.32E-07 1.26E-07 1.20E-07 1.13E-07 1.07E-07 1.02E-07 ENE 1.73E-07 1.64E-07 1.56E-07 1.49E-07 1.41E-07 1.34E-07 1.27E-07 E 2.18E-07 2.04E-07 1.91E-07 1.80E-07 1.69E-07 1.60E-07 1.51E-07 ESE 2.74E-07 2.53E-07 2.36E-07 2.20E-07 2.05E-07 1.93E-07 1.81 E-07 SE 2.91E-07 2.73E-07 2.56E-07 2.41E-07 2.26E-07 2.12E-07 1.99E-07 SSE 2.22E-07 2.99E-07 2.78E-07 2.59E-07 2.43E-07 2.29E-07 2.15E-07 S 1.80E-07 1.68E-07 1.57E-07 1.47E-07 1.42E-07 1.37E-07 1.33E-07 SSW 2.55E-07 2.48E-07 2.41 E-07 2.35E-07 2.20E-07 2.06E-07 1.94E-07 SW 2.38E-07 2.30E-07 2.22E-07 2.15E-07 2.04E-07 1.93E-07 1.83E-07 WSW 2.60E-07 2.51E-07 2.42E-07 2.34E-07 2.18E-07 2.04E-07 1.92E-07 W 2.54E-07 2.48E-07 2.42E-07 2.37E-07 2.25E-07 2.14E-07 2.04E-07 WNW 2.93E-07 2.85E-07 2.79E-07 2.73E-07 2.64E-07 2.55E-07 2.47E-07 NW 2.07E-07 1.94E-07 1.82E-07 1.72E-07 1.66E-07 1.60E-07 1.55E-07 NNW 2.28E-07 2.13E-07 2.OOE-07 1.88E-07 1.78E-07 1.68E-07 1.60E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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I MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 12 of 74 Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m3 Miles 2.9 3.0 3.1 3.2 3.3 3.4 3.5 Sector*

N 1.62E-07 1.56E-07 1.51 E-07 1.46E-07 1.41 E-07 1.37E-07 1.33E-07 NNE 1.20E-07 1.14E-07 1.09E-07 1.04E-07 9.91E-08 9.49E-08 9.10E-08 NE 9.64E-08 9.16E-08 8.73E-08 8.33E-07 7.96E-08 7.62E-08 7.30E-08 ENE 1.21E-07 1.16E-07 1.11E-07 1.06E-07 1.02E-07 9.75E-08 9.37E-08 E 1.44E-07 1.36E-07 1.30E-07 1.24E-07 1.18E-07 1.13E-07 1.09E-07 ESE 1.71E-07 1.61E-07 1.53E-07 1.45E-07 1.38E-07 1.31E-07 1.25E-07 SE 1.88E-07 1.77E-07 1.68E-07 1.59E-07 1.51E-07 1.44E-07 1.37E-07 SSE 2.04E-07 1.93E-07 1.83E-07 1.74E-07 1.66E-07 1.58E-07 1.51E-07 S 1.29E-07 1.26E-07 1.22E-07 1.19E-07 1.17E-07 1.14E-07 1.12E-07 SSW 1.83E-07 1.73E-07 1.63E-07 1.55E-07 1.47E-07 1.40E-07 1.33E-07 SW 1.75E-07 1.67E-07 1.59E-07 1.52E-07 1.46E-07 1.40E-07 1.34E-07 WSW 1.80E-07 1.70E-07 1.60E-07 1.52E-07 1.44E-07 1.37E-07 1.30E-07 W 1.95E-07 1.87E-07 1.79E-07 1.72E-07 1.65E-07 1.59E-07 1.53E-07 WNW 2.40E-07 2.33E-07 2.26E-07 2.19E-07 2.13E-07 2.07E-07 2.01E-07 NW 1.50E-07 1.46E-07 1.42E-07 1.39E-07 1.36E-07 1.33E-07 1.31 E-07 NNW 1.52E-07 1.45E-07 1.38E-07 1.32E-07 1.26E-07 1.21E-07 1.17E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Paqe 13 of 74 Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m Miles 3.6 3.7 3.8 3.9 4.0 4.1 4.2 Sector*

N 1.28E-07 1.23E-07 1.18E-07 1.14E-07 1.10E-07 1.06E-07 1.02E-07 NNE 8.74E-08 8.40E-08 8.09E-08 7.80E-08 7.52E-08 7.26E-08 7.02E-08 NE 7.01E-08 6.74E-08 6.48E-08 -6.24E-08 6.02E-08 5.81E-08 5.61E-08 ENE 9.02E-08 8.69E-08 8.38E-08 8.1OE-08 7.82E-08 7.57E-08 7.33E-08 E 1.04E-07 1.OOE-07 9.62E-08 9.26E-08 8.92E-08 8.61E-08 8.31E-08 ESE 1.19E-07 1.14E-07 1.09E-07 1.05E-07 1.01E-07 9.66E-07 9.29E-08 SE 1.31E-07 1.25E-07 1.20E-07 1.15E-07 1.10E-07 1.06E-07 1.02E-07 SSE 1.45E-07 1.40E-07 1.36E-07 1.31E-07 1.27E-07 1.23E-07 1.19E-07 S 1.08E-07 1.05E-07 1.02E-07 9.95E-08 9.69E-08 9.44E-08 9.20E-08 SSW 1.29E-07 1.25E-07 1.21E-07 1.17E-07 1.13E-07 1.1OE-07 1.07E-07 SW 1.31E-07 1.27E-07 1.24E-07 1.20E-07 1.17E-07 1.14E-07 1.11E-07 WSW 1.27E-07 1.23E-07 1.20E-07 1.17E-07 1.14E-07 1.11E-07 1.09E-07 W 1.46E-07 1.39E-07 1.33E-07 1.28E-07 1.22E-07 1.17E-07 1.13E-07 WNW 1.91E-07 1.82E-07 1.74E-07 1.66E-07 1.59E-07 1.52E-07 1.46E-07 NW 1.26E-07 1.23E-07 1.19E-07 1.16E-07 1.13E-07 1.1OE-07 1.07E-07 NNW 1.12E-07 1.08E-07 1.04E-07 1.01E-07 9.73E-08 9.41E-08 9.11E-08 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Reactor Vent.

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I MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 14 of 74 Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m3 Miles 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Sector*

N 9.86E-08 9.54E-08 9.23E-08 8.95E-08 8.68E-08 8.42E-08 8.18E-08 NNE 6.79E-08 6.57E-08 6.37E-08 6.18E-08 6.OOE-08 5.83E-08 5.66E-08 NE 5.43E-08 5.25E-08 5.09E-08 4.93E-08 4.78E-08 4.65E-08 4.51E-08 ENE 7.10E-08 6.89E-08 6.68E-08 6.49E-08 6.31E-08 6.14E-08 5.97E-08 E 8.09E-08 7.77E-08 7.53E-08 7.29E-08 7.07E-08 6.87E-08 6.67E-08 ESE 8.05E-08 8.63E-08 8.33E-08 8.04E-08 7.78E-08 7.52E-08 7.28E-08 SE 9.84E-08 9.48E-08 9.15E-08 8.84E-08 8.55E-08 8.27E-08 8.01E-08 SSE 1.16E-07 1.13E-07 1.10E-07 1.06E-07 1.03E-07 9.92E-08 9.61E-08 S 8.98E-08 8.77E-08 8.57E-08 8.28E-08 8.OOE-08 7.74E-08 7.50E-08 SSW 1.04E-07 1.01E-07 9.84E-08 9.49E-08 9.16E-08 8.85E-08 8.55E-08 SW 1.08E-07 1.05E-07 1.02E-07 9.82E-08 9.46E-08 9.12E-08 8.79E-08 WSW 1.06E-07 1.03E-07 1.01E-07 9.72E-08 9.36E-08 9.03E-08 8.72E-08 W 1.08E-07 1.04E-07 1.OOE-07 9.69E-08 9.36E-08 9.04E-08 8.74E-08 WNW 1.40E-07 1.35E-07 1.30E-07 1.25E-07 1.20E-07 1.16E-07 1.12E-07 NW 1.04E-07 1.02E-07 9.92E-08 9.58E-08 9.26E-08 8.95E-08 8.67E-08 NNW 8.83E-08 8.57E-08 8.32E-08 8.07E-08 7.82E-08 7.60E-08 7.38E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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I MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 15 of 74 Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m Miles 5.0 Sector*

5,0 N 7.94E-08 NNE 5.51 E-08 NE 4.39E-08 ENE 5.82E-08 E 6.48E-08 ESE 7.06E-08 SE 7.76E-08 SSE 9.31 E-08 S 7.26E-08 SSW 8.28E-08 SW '8.49E-08 WSW 8.42E-08 W 8.46E-08 WNW 1.08E-07 NW 8.40E-08 NNW 7.18E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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I1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 16 of 74 Table 5 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m2 Miles 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Sector*

N 2.75E-07 1.1OE-07 6.31E-08 4.18E-08 3.01E-08 2.28E-08 1.80E-08 NNE 1.89E-07 7.89E-08 4.70E-08 3.17E-08 2.30E-08 1.74E-08 1.37E-08 NE 1.11E-07 4.68E-08 2.81E-08 1.91E-08 1.39E-08 1.06E-08 8.41E-09 ENE 1.03E-07 4.32E-08 2.61E-08 1.78E-08 1.31E-08 1.OOE-08 7.94E-09 E 1.58E-07 6.46E-08 3.08E-08 2.56E-08 1.87E-08 1.42E-08 1.13E-08 ESE 3.79E-07 1.49E-07 8.53E-08 5.66E-08 4.09E-08 3.11E-08 2.46E-08 SE 4.31E-07 1.67E-07 9.41E-08 6.19E-08 4.43E-08 3.36E-08 2.65E-08 SSE 4.49E-07 1.77E-07 1.01 E-07 6.65E-08 4.78E-08 3.62E-08 2.86E-08 S 1.47E-07 6.03E-08 3.58E-08 2.43E-08 1.79E-08 1.38E-08 1.10E-08 SSW 9.22E-08 3.85E-08 2.33E-08 1.62E-08 1.21E-08 9.50E-09 7.72E-09 SW 1.21E-07 4.80E-08 2.79E-08 1.90E-08 1.41E-08 1.10E-08 8.89E-09 WSW 8.33E-08 3.44E-08 2.07E-08 1.44E-08 1.09E-08 8.57E-09 7.01E-09 W 9.09E-08 3.80E-08 2.29E-08 1.58E-08 1.18E-08 9.18E-09 7.41E-09 WNW 1.51E-07 6.14E-08 3.65E-08 2.49E-08 1.83E-08 1.41E-08 1.13E-08 NW 1.86E-07 7.43E-08 4.30E-08 2.89E-08 2.11E-08 1.62E-08 1.29E-08 NNW 2.45E-07 9.85E-08 5.73E-08 3.82E-08 2.76E-08 2.1OE-08 1.66E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1Page 17 of 74 Table 5 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m Miles Sector* 0.8 0.9 1.0 1.1 1.2 1.3 1.4 N 1.38E-08 1.02E-08 7.88E-09 6.23E-09 5.03E-09 4.14E-09 3.55E-09 NNE 1.05E-08 7.83E-09 6.02E-09 4.76E-09 3.85E-09 3.17E-09 2.72E-09 NE 6.48E-09 4.84E-09 3.74E-09 2.96E-09 2.40E-09 1.98E-09 1.66E-09 ENE 6.14E-09 4.60E-09 3.56E-09 2.83E-09 2.30E-09 1.90E-09 1.60E-09 E 8.71E-09 6.51E-09 5.04E-09 4.OOE-09 3.24E-09 -2.68E-09 2.24E-09 ESE 1.89E-08 1.41E-09 1,.09E-08 8.64E-09 7.OOE-09 5.77E-09 4.83E-09 SE 2.03E-08 1.51E-08 1.17E-08 9.22E-09 7.45E-09 6.14E-09 5.13E-09 SSE 2.19E-08 1.63E-08 1.26E-08 9.93E-09 8.03E-09 6.61E-09 5.75E-09 S 8.57E-09 6.44E-09 5.01 E-09 3.99E-09 3.46E-09 2.85E-09 2.38E-09 SSW 6.08E-09 4.63E-09 3.63E-09 2.92E-09 2.39E-09 2.09E-09 1.76E-09 SW 6.99E-09 5.31E-09 4.16E-09 3.34E-09 2.73E-09 2.41E-09 2.02E-09 WSW 5.56E-09 4.86E-09 3.36E-09 2.71 E-09 2.23E-09 1.86E-09 1.63E-09 W 5.81E-09 4.41E-09 3.45E-09 2.77E-09 2.27E-09 1.89E-09 1.65E-09 WNW 8.82E-09 7.50E-09 5.17E-09 4.13E-09 3.76E-09 2.79E-09 2.48E-09 NW 9.99E-09 7.50E-09 5.82E-09 4.63E-09 3.76E-09 3.11E-09 2.61E-09 NNW 1.27E-08 9.47E-09 7.30E-09 5.78E-09 4.67E-09 3.85E-09 3.32E-09 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 18of 74 Table 5 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m2 Miles 1.5 1.6 1.7 1.8 1.9 2.0 2.1 Sector*

N 3.OOE-09 2.57E-09 2.22E-09 1.93E-09 1.70E-09 1.51E-09 1.34E-09 NNE 2.30E-09 1.97E-09 1.71E-09 1.49E-09 1.31E-09 1.16E-09 1.04E-09 NE 1.41E-09 1.21E-09 1.05E-09 9.18E-10 8.12E-10 7.20E-10 6.44E-10 ENE 1.36E-09 1.17E-09 1.01E-09 8.84E-10 7.81E-10 6.94E-10 6.20E-10 E 1.91E-09 1.64E-09 1.42E-09 1.24E-09 1.09E-09 9.71E-10 8.67E-10 ESE 4.09E-09 3.51 E-09 3.04E-09 2.65E-09 2.34E-09 2.07E-09 1.85E-09 SE 4.34E-09 3.72E-09 3.22E-09 2.81E-09 2.48E-09 2.19E-09 1.96E-09 SSE 4.86E-09 4.16E-09 3.59E-09 3.13E-09 2.75E-09 2.43E-09 2.17E-09 S 2.03E-09 1.74E-09 1.50E-09 1.31E-09 1.16E-09 1.02E-09 9.13E-10 SSW 1.50E-09 1.33E-09 1.15E-09 1.01E-09 9.52E-10 8.43E-10 7.52E-10 SW 1.72E-09 1.52E-09 1.32E-09 1.15E-09 1.08E-09 9.53E-10 8.49E-10 WSW 1.39E-09 1.25E-09 1.09E-09 9.54E-10 9.16E-10 8.11E-10 7.23E-10 W 1.40E-09 1.24E-09 1.08E-09 9.44E-10 8.93E-10 7.91E-10 7.05E-10 WNW 2.10E-09 1.84E-09 1.59E-09 1.39E-09 1.28E-09 1.13E-09 1.01E-09 NW 2.22E-09 1.91E-09 1.65E-09 1.45E-09 1.28E-09 1.13E-09 1.01E-09 NNW 2.81E-09 2.40E-09 2.08E-09 1.81E-09 1.59E-09 1.42E-09 1.27E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 19 of 74 Table 5 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 HrsIYr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m2 Miles 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Sector*

N 1.21E-09 1.09E-09 9.85E-10 8.97E-10 8.29E-10 7.64E-10 7.05E-10 NNE 9.29E-10 8.38E-10 7.60E-10 6.92E-10 6.33E-10 5.81E-10 5.35E-10 NE 5.78E-10 5.23E-10 4.83E-10 4.40E-10 4.03E-10 3.70E-10 3.41E-10 ENE 5.70E-10 5.14E-10 4.67E-10 4.25E-10 3.89E-10 3.57E-10 3.29E-10 E 7.79E-10 7.03E-10 6.38E-10 5.82E-10 5.32E-10 4.89E-10 4.51E-10 ESE 1.66E,09 1.50E-09 1.36E-09 1.24E-09 1.13E-09 1.04E-09 9.56E-10 SE 1.81E-09 1.63E-09 1.47E-09 1.35E-09 1.23E-09 1.13E-09 1.04E-09 SSE 1.94E-09 1.75E-09 1.59E-09 1.44E-09 1.32E-09 1.21E-09 1.11E-09 S 8.91E-10 7.38E-10 6.69E-10 6.09E-10 5.59E-10 5.16E-10 4.76E-10 SSW 6.74E-10 6.08E-10 5.51E-10 5.02E-10 4.60E-10 4.22E-10 3.90E-10 SW 7.61E-10 6.86E-10 6.22E-10 5.66E-10 5.18E-10 4.75E-10 4.38E-10 WSW 6.49E-10 5.85E-10 5.30E-10 4.83E-10 4.42E-10 4.07E-10 3.75E-10 W 6.33E-10 5.71E-10 5.18E-10 4.72E-10 4.32E-10 3.98E-10 3.67E-10 WNW 9.02E-10 8.14E-10 7.38E-10 6.72E-10 6.15E-10 5.66E-10 5.22E-10 NW 9.09E-10 8.48E-10 7.69E-10 7.OOE-10 6.48E-10 5.95E-10 5.52E-10 NNW 1.14E-09 1.03E-09 9.29E-10 8.46E-10 7.77E-10 7.14E-10 6.59E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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I1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 20 of 74 Table 5 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m Miles Sector* 2.9 3.0 3.1 3.2 3.3 3.4 3.5 N 6.52E-10 6.09E-10 5.67E-10 5.30E-10 5.OOE-10 4.71E-10 4.46E-10 NNE 4.95E-10 4.59E-10 4.26E-10 3.97E-10 3.71E-10 3.48E-10 3.27E-10 NE 3.15E-10 2.92E-10 2.72E-10 2.53E-10 2.37E-10 2.22E-10 2.08E-10 ENE 3.04E-10 2.82E-10 2.62E-10 2.44E-10 2.28E-10 2.14E-10 2.01E-10 E 4.16E-10 3.86E-10 3.59E-10 3.34E-10 3.12E-10 2.93E-10 2.75E-10 ESE 8.83E-10 8.18E-10 7.60E-10 7.08E-10 6.61E-10 6.19E-10 5.80E-10 SE 9.59E-10 8.88E-10 8.25E-10 7.68E-10 7.17E-10 6.71E-10 6.30E-10 SSE 1.03E-09 9.56E-10 8.89E-10 8.28E-10 7.73E-10 7.24E-10 6.79E-10 S 4.42E-10 4.12E-10 3.93E-10 3.68E-10 3.44E-10 3.24E-10 3.05E-10 SSW 3.61E-10 3.35E-10 3.13E-10 2.92E-10 2.74E-10 2.58E-10 2.43E-10 SW 4.05E-10 3.76E-10 3.50E-10 3.27E-10 3.06E-10 2.87E-10 2.71E-10 WSW 3.47E-10 3.23E-10 3.01E-10 2.81E-10 2.64E-10 2.48E-10 2.34E-10 W 3.40E-10 3.16E-10 2.95E-10 2.76E-10 2.60E-10 2.44E-10 2.31E-10 WNW 4.83E-10 4.49E-10 4.19E-10 3.91E-10 3.68E-10 3.90E-10 3.98E-10 NW 5.13E-10 4.78E-10 4.54E-10 4.25E-10 3.99E-10 3.75E-10 3.53E-10 NNW 6.10E-10 5.66E-10 5.27E-10 4.92E-10 4.61E-10 4.33E-10 4.08E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 21 of 74 Table 5 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m Miles Sector* 3.6 3.7 3.8 3.9 4.0 4.1 4.2 N 4.22E-10 4.OOE-10 3.80E-10 3.62E-10 3.45E-10 3.30E-10 3.16E-10 NNE 3.08E-10 2.90E-10 2.74E-10 2.59E-10 2.46E-10 2.34E-10 2.22E-10 NE 1.96E-10 1.87E-10 1.75E-10 1.65E-10 1.57E-10 1.49E-10 1.41E-10 ENE 1.89E-10 1.78E-10 1.68E-10 1.59E-10 1.51E-10 1.43E-10 1.36E-10 E 2.58E-10 2.43E-10 2.29E-10 2.17E-10 2.05E-10 1.95E-10 1.85E-10 ESE 5.45E-10 5.13E-10 4.84E-10 4.57E-10 4.33E-10 4.10E-10 3.89E-10 SE 5.93E-10 5.58E-10 5.27E-10 4.98E-10 4.72E-10 4.48E-10 4.26E-10 SSE 6.46E-10 6.09E-10 5.76E-10 5.55E-10 5.27E-10 5.02E-10 4.79E-10 S 2.88E-10 2.73E-10 2.59E-10 2.46E-10 2.35E-10 2.24E-10 2.14E-10 SSW 2.30E-10 2.18E-10 2.07E-10 1.97E-10 1.88E-10 1.80E-10 1.72E-10 SW 2.55E-10 2.42E-10 2.29E-10 2.18E-10 2.28E-10 2.33E-10 2.22E-10 WSW 2.21E-10 2.10E-10 1.99E-10 1.90E-10 1.81E-10 1.73E-10 1.66E-10 W 2.19E-10 2.08E-10 1.98E-10 1.88E-10 1.80E-10 1.72E-10 1.65E-10 WNW 3.75E-10 3.55E-10 3.36E-10 3.19E-10 3.04E-10 2.89E-10 2.76E-10 NW 3.34E-10 3.17E-10 3.01E-10 2.86E-10 2.73E-10 2.61E-10 2.50E-10 NNW 3.85E-10 3.64E-10 3.45E-10 3.28E-10 3.12E-10 3.04E-10 2.90E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 IPage 22 of 74 Table 5 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 HrsIYr or >150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m Miles 4.4 4.5 4.6 - 4.7 4.8 4.9 Sector* 4.3 N 3.03E-10 2.91E-10 2.80E-10 2.70E-10 2.61E-10 2.52E-10 2.44E-10 NNE 2.12E-10 2.02E-10 1.93E-10 1.84E-10 1.76E-10 1.69E-10 1.62E-10 NE 1.35E-10 1.28E-10 1.23E-10 1.17E-10 1.12E-10 1.07E-10 1.03E-10 ENE 1.29E-10 1.23E-10 1.18E-10 1.12E-10 1.08E-10 1.03E-10 9.88E-11 E 1.76E-10 1.67E-10 1.59E-10 1.52E-10 1.45E-10 1.39E-10 1.33E-10 ESE 3.70E-10 3.52E-10 3.35E-10 3.20E-10 3.05E-10 2.92E-10 2.79E-10 SE 4.05E-10 3.87E-10 3.69E-10 3.53E-10 3.38E-10 3.24E-10-- 3.11E-10 SSE 4.61E-10 4.41E-10 4.26E-10 4.09E-10 3.94E-10 3.80E-10 3.66E-10 S 2.05E-10 1.97E-10 1.90E-10 1.83E-10 1.76E-10 1.70E-10 1.65E-10 SSW 1.65E-10 1.59E-10 1.53E-10 1.48E-10 1.43E-10 1.38E-10 1.34E-10 SW 2.42E-10 2.42E-10 2.41E-10 2.30E-10 2.20E-10 2.10E-10 2.01E-10 WSW 1.59E-10 1.53E-10 1.58E-10 1.52E-10 1.47E-10 1.42E-10 1.37E-10 W 1.59E-10 1.53E-10 1.48E-10 1.43E-10 1.38E-10 1.34E-10 1.30E-10 WNW 2.64E-10 2.53E-10 2.42E-10 2.33E-10 2.24E-10 2.16E-10 2.08E-10 NW 2.39E-10 2.30E-10 2.22E-10 2.14E-10 2.07E-10 2.OOE-10 1.93E-10 NNW 2.78E-10 2.67E-10 2.57E-10 2.47E-10 2.38E-10 2.30E-10 2.22E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Paqe 23 of 74 Table 5 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m Miles 5.0 Sector*

N 2.36E-10 NNE 1.56E-10 NE 9.90E-1 1 ENE 9.49E- 11 E 1.27E-10 ESE 2.68E-10 SE 2.99E-10 SSE 3.54E- 10 S 1.60E-10 SSW 1.30E-10 SW 1.93E-10 WSW 1.33E-10 W 1.27E-10 WNW 2.01E-10 NW 1.87E-10 NNW 2.15E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR GENERA TING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 24 of 74 Table 6 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr Site Boundary Sector* x/Q (Sec/m3 ) D/Q (m- 2)

N 7.04E-08 4.51 E-09 NNE 7.06E-08 4.30E-09 NE 1.OOE-07 6.18E-09 ENE 6.20E-08 2.34E-09 E 4.46E-08 2.77E-09 ESE 5.28E-08 3.93E-09 SE 5.50E-08 4.98E-09 SSE 3.99E-08 4.20E-09 S 1.83E-08 2.63E-09 SSW .1.17E-08 1.46E-09 SW 1.17E-08 1.46E-09 WSW 1.34E-08 1.34E-09 W 3.42E-08 1.67E-09 WNW 7.22E-08 2.43E-09 NW 5.67E-08 2.82E-09 NNW 1.08E-07 5.80E-09 Period of record: 9-1-76 to 8-31-78.

Measured relevant to the Reactor Vent.

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MONTICELLO NUCLEAR -GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 25 of 74 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr 3

For Standard Distances (As Measured from the Offgas Stack) (X/Q), sec/m Miles Sector* 0.1 0.2 0.3 0.4 0.5 0.6 0.7 N 2.39E-11 4.33E-08 6.96E-08 7.18E-08 7.08E-08 7.05E-08 7.15E-08 NNE 3.93E-11 6.93E-08 1.04E-07 1.03E-07 1.02E-07 1.01E-07 9.96E-08 NE 1.15E-11 2.27E-08 4.42E-08 5.50E-08 6.09E-08 6.34E-08 6.46E-08 ENE 1.00E-11 1.96E-08 3.74E-08 4.75E-08 5.48E-08 5.94E-08 6.22E-08 E 3.09E-12 7.35E-09 2.33E-08 3.64E-08 4.44E-08 4.93E-08 5.30E-08 ESE 2.80E-12 7.63E-09 2.67E-08 4.30E-08 5.31E-08 5.99E-08 6.61E-08 SE 5.57E-12 1.31 E-08 3.90E-08 5.97E-08 7.41 E-08 8.66E-08 9.91 E-08 SSE 6.56E-12 1.40E-08 3.27E-08 4.50E-08 5.37E-08 6.41E-08 7.81E-08 S 4.93E-12 1.23E-08 3.06E-08 4.42E-08 5.35E-08 6.15E-08 6.95E-08 SSW 1.62E-12 4.83E-09 1.73E-08 2.93E-08 3.77E-08 4.45E-08 5.11E-08 SW 5.96E-13 2.06E-09 9.62E-09 1.69E-08 2.21E-08 2.73E-08 3.37E-08 WSW 3.07E-13 1.30E-09 7.80E-09 1.43E-08 1.87E-08 2.33E-08 2.94E-08 W 1.87E-12 6.43E-09 1.74E-08 2.59E-08 3.15E-08 3.63E-08 4.14E-08 WNW 1.56E-12 5.49E-09 2.06E-08 3.41E-08 4.21E-08 4.76E-08 5.27E-08 NW 5.29E-12 1.20E-08 3.15E-08 4.53E-08 5.46E-08 6.24E-08 6.92E-08 NNW 3.03E-11 5.55E-08 9.01E-08 9.73E-08 1.02E-07 1.07E-07 1.11E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 26 of 74 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/Q), sec/m3 Miles Sector* 0.8 0.9 1.0 1.1 1.2 1.3 1.4 N 7.07E-08 6.72E-08 6.55E-08 6.42E-08 6.30E-08 6.18E-08 6.05E-08 NNE 9.48E-08 8.63E-08 8.08E-08 7.65E-08 7.29E-08 6.97E-08 6.67E-08 NE 6.26E-08 5.76E-08 5.41E-08 5.13E-08 4.89E-08 4.69E-08 4.50E-08 ENE 6.13E-08 5.70E-08 5.38E-08 5.12E-08 4.89E-08 4.67E-08 4.47E-08 E 5.36E-08 5.1OE-08 4.91E-08 4.74E-08 4.58E-08 4.43E-08 4.27E-08 ESE 6.89E-08 6.75E-08 6.63E-08 6.51E-08 6.36E-08 6.19E-08 6.OOE-08 SE 1.06E-07 1.05E-07 1.04E-07 1.02E-07 9.96E-08 9.66E-08 9.32E-08 SSE 9.01 E-08 9.61 E-08 1.01 E-07 1.04E-07 1.06E-07 1.06E-07 1.05E-07 S 7.41E-08 7.41E-08 7.42E-08 7.39E-08 7.31E-08 7.19E-08 7.04E-08 SSW 5.49E-08 5.49E-08 5.49E-08 5.44E-08 5.37E-08 5.26E-08 5.13E-08 SW 3.88E-08 4.13E-08 4.31E-08 4.43E-08 4.49E-08 4.49E-08 4.45E-08 WSW 3.49E-08 3.82E-08 4.1OE-08 4.32E-08 4.46E-08 4.55E-08 4.58E-08 W 4.50E-08 4.59E-08 4.69E-08 4.77E-08 4.80E-08 4.80E-08 4.77E-08 WNW 5.52E-08 5.45E-08 5.42E-08 5.39E-08 5.33E-08 5.26E-08 5.16E-08 NW 7.18E-08 6.96E-08 6.77E-08 6.59E-08 6.40E-08 6.21E-08 6.01E-08 NNW 1.08E-07 9.96E-08 9.36E-08 8.85E-08 8.40E-08 8.OOE-08 7.63E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Paqe 27 of 74 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Offgas Stack) (X/Q), sec/m Miles 1.5 1.6 1.7 1.8 1.9 2.0 2.1 Sector*

N 5.91 E-08 5.66E-08 5.43E-08 5.20E-08 4.99E-08 4.78E-08 4.59E-08 NNE 6.40E-08 6.06E-08 5.74E-08 5.45E-08 5.17E-08 4.92E-08 4.69E-08 NE 4.33E-08 4.23E-08 4.14E-08 4.06E-08 3.96E-08 3.88E-08 3.79E-08 ENE 4.28E-08 4.1OE-08 3.93E-08 3.77E-08 3.62E-08 3.47E-08 3.34E-08 E 4.12E-08 3.94E-08 3.76E-08 3.60E-08 3.44E-08 3.29E-08 3.15E-08 ESE 5.80E-08 5.59E-08 5.39E-08 5.18E-08 4.98E-08 4.78E-08 4.60E-08 SE 8.97E-08 8.77E-08 8.55E-08 8.32E-08 8.07E-08 7.83E-08 7.59E-08 SSE 1.04E-08 9.98E-08 9.58E-08 9.19E-08 8.80E-08 8.42E-08 8.06E-08 S 6.85E-08 6.54E-08 6.23E-08 5.93E-08 5.65E-08 5.39E-08 5.14E-08 SSW 4.99E-08 5.03E-08 5.04E-08 5.04E-08 5.02E-08 4.99E-08 4.95E-08 SW 4.37E-08 4.46E-08 4.51E-08 4.54E-08 4.55E-08 4.54E-08 4.52E-08 WSW 4.57E-08 4.71E-08 4.81 E-08 4.88E-08 4.92E-08 4.94E-08 4.95E-08 W 4.71 E-08 4.79E-08 4.85E-08 4.89E-08 4.90E-08 4.90E-08 4.89E-08 WNW 5.05E-08 5.1OE-08 5.12E-08 5.13E-08 5.12E-08 5.11E-08 5.08E-08 NW 5.81E-08 5.64E-08 5.47E-08 5.30E-08 5.13E-08 4.97E-08 4.82E-08 NNW 7.29E-08 6.89E-08 6.52E-08 6.18E-08 5.87E-08 5.58E-08 5.31E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 28 of 74 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Offgas Stack) (X/Q), sec/m Miles 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Sector*

N 4.41E-08 4.23E-08 4.07E-08 3.92E-08 3.82E-08 3.73E-08 3.64E-08 NNE 4.48E-08 4.28E-08 4.09E-08 3.92E-08 3.76E-08 3.61 E-08 3.47E-08 NE 3.71E-08 3.63E-08 3.53E-08 3.47E-08 3.35E-08 3.24E-08 3.13E-08 ENE 3.21 E-08 3.09E-08 2.98E-08 2.87E-08 2.76E-08 2.65E-08 2.55E-08 E 3.02E-08 2.90E-08 2.78E-08 2.67E-08 2.57E-08 2.47E-08 2.38E-08 ESE 4.42E-08 4.25E-08 4.09E-08 3.94E-08 3.79E-08 3.66E-08 3.53E-08 SE 7.35E-08 7.12E-08 6.89E-08 6.68E-08 6.38E-08 6.11E-08 5.85E-08 SSE 7.72E-08 7.39E-08 7.08E-08 6.79E-08 6.53E-08 6.28E-08 6.05E-08 S 4.91E-08 4.69E-08 4.48E-08 4.29E-08 4.20E-08 4.11E-08 4.03E-08 SSW 4.90E-08 4.85E-08 4.79E-08 4.73E-08 4.51E-08 4.30E-08 4.11E-08 SW 4.49E-08 4.46E-08 4.42E-08 4.38E-08 4.23E-08 4.09E-08 3.96E-08 WSW 4.93E-08 4.91 E-08 4.88E-08 4.84E-08 4.63E-08 4.42E-08 4.24E-08 W 4.86E-08 4.83E-08 4.79E-08 4.75E-08 4.59E-08 4.44E-08 4.30E-08 WNW 5.05E-08 5.01 E-08 4.97E-08 4.93E-08 4.84E-08 4.75E-08 4.66E-08 NW 4.67E-08 4.52E-08 4.38E-08 4.25E-08 4.19E-08 4.14E-08 4.08E-08 NNW 5.06E-08 4.83E-08 4.62E-08 4.42E-08 4.24E-08 4.07E-08 3.91 E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

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MONTICELLO NUCLEAR GENERATING PLANT I1 ODCM-APP-A TITLE: APPENDIX A Revision 1 Paqe 29 of 74 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/Q), sec/m3 Miles Sector* 2.9 3.0 3.1 3.2 3.3 3.4 3.5 N 3.55E-08 3.47E-08 3.39E-08 3.31E-08 3.24E-08 3.17E-08 3.10E-08 NNE 3.34E-08 3.22E-08 3.11E-08 3.OOE-08 2.90E-08 2.80E-08 2.71E-08 NE 3.03E-08 2.93E-08 2.84E-08 2.76E-08 2.67E-08 2.60E-08 2.52E-08 ENE 2.46E-08 2.37E-08 2.29E-08 2.21E-08 2.14E-08 2.07E-08 2.OOE-08 E 2.30E-08 2.22E-08 2.14E-08 2.07E-08 2.OOE-08 1.94E-08 1.88E-08 ESE 3.41E-08 3.29E-08 3.18E-08 3.08E-08 2.98E-08 2.89E-08 2.80E-08 SE 5.62E-08 5.39E-08 5.18E-08 4.98E-08 4.80E-08 4.62E-08 4.46E-08 SSE 5.83E-08 5.62E-08 5.42E-08 5.23E-08 5.05E-08 4.89E-08 4.73E-08 S 3.94E-08 3.86E-08 3.78E-08 3.70E-08 3.63E-08 3.55E-08 3.49E-08 SSW 3.93E-08 3.77E-08 3.61 E-08 3.47E-08 3.34E-08 3.21 E-08 3.09E-08 SW 3.84E-08 3.72E-08 3.61E-08 3.51E-08 3.41E-08 3.32E-08 3.23E-08 WSW 4.06E-08 3.90E-08 3.74E-08 3.60E-08 3.47E-08 3.34E-08 3.22E-08 W 4.17E-08 4.04E-08 3.93E-08 3.81E-08 3.70E-08 3.60E-08 3.50E-08 WNW 4.58E-08 4.50E-08 4.42E-08 4.34E-08 4.27E-08 4.20E-08 4.14E-08 NW 4.02E-08 3.96E-08 3.90E-08 3.85E-08 3.79E-08 3.74E-08 3.68E-08 NNW 3.76E-08 3.62E-08 3.49E-08 3.36E-08 3.25E-08 3.14E-08 3.03E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 30 of 74 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Offgas Stack) (x/Q), sec/mi Miles Sector* 3.6 3.7 3.8 3.9 4.0 4.1 4.2 N 3.OOE-08 2.91E-08 2.82E-08 2.74E-08 2.66E-08 2.59E-08 2.51E-08 NNE 2.63E-08 2.54E-08 2.47E-08 2.40E-08 2.33E-08 2.26E-08 2.20E-08 NE 2.45E-08 2.39E-08 2.32E-08 2.26E-08 2.20E-08 2.15E-08 2.09E-08 ENE 1.94E-08 1.88E-08 1.83E-08 1.77E-08 1.73E-08 1.68E-08 1.63E-08 E 1.82E-08 1.77E-08 1.71E-08 1.66E-08 1.62E-08 1.57E-08 1.53E-08 ESE 2.72E-08 2.64E-08 2.56E-08 2.49E-08 2.42E-08 2.35E-08 2.29E-08 SE 4.30E-08 4.16E-08 4.02E-08 3.89E-08 3.77E-08 3.65E-08 3.54E-08 SSE 4.60E-08 4.49E-08 4.37E-08 4.27E-08 4.16E-08 4.06E-08 3.97E-08 S 3.39E-08 3.30E-08 3.22E-08 3.14E-08 3.06E-08 2.99E-08 2.92E-08 SSW 3.01 E-08 2.93E-08 2.86E-08 2.79E-08 2.72E-08 2.65E-08 2.59E-08 SW 3.17E-08 3.12E-08 3.07E-08 3.02E-08 2.98E-08 2.93E-08 2.89E-08 WSW 3.17E-08 3.12E-08 3.07E-08 3.03E-08 2.98E-08 2.94E-08 2.89E-08 W 3.38E-08 3.26E-08 3.15E-08 3.05E-08 2.95E-08 2.86E-08 2.77E-08 WNW 3.99E-08 3.84E-08 3.71E-08 3.58E-08 3.46E-08 3.35E-08 3.24E-08 NW 3.60E-08 3.51E-08 3.43E-08 3.35E-08 3.28E-08 3.20E-08 3.13E-08 NNW 2.94E-08 2.84E-08 2.76E-08 2.67E-08 2.60E-08 2.52E-08 2.45E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1Page 31 of 74 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (x/Q), sec/m3 Miles 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Sector*

N 2.45E-08 2.38E-08 2.32E-08 2.26E-08 2.20E-08 2.15E-08 2.1OE-08 NNE 2.14E-08 2.08E-08 2.03E-08 1.98E-08 1.93E-08 1.88E-08 1.84E-08 NE 2.04E-08 1.99E-08 1.95E-08 1.90E-08 1.86E-08 1.82E-08 1.78E-08 ENE 1.59E-08 1.55E-08 1.51E-08 1.47E-08 1.44E-08 1.40E-08 1.37E-08 E 1.49E-08 1.45E-08 1.42E-08 1.38E-08 1.35E-08 1.31E-08 1.28E-08 ESE 2.23E-08 2.18E-08 2.12E-08 2.07E-08 2.02E-08 1.97E-08 1.93E-08 SE 3.43E-08 3.33E-08 3.24E-08 3.15E-08 3.06E-08 2.98E-08 2.90E-08 SSE 3.88E-08 3.79E-08 3.71 E-08 3.60E-08 3.50E-08 3.41 E-08 3.32E-08 S 2.85E-08 2.79E-08 2.73E-08 2.65E-08 2.57E-08 2.50E-08 2.43E-08 SSW 2.53E-08 2.48E-08 2.42E-08 2.35E-08 2.28E-08 2.22E-08 2.16E-08 SW 2.85E-08 2.81E-08 2.77E-08 2.69E-08 2.61E-08 2.53E-08 2.46E-08 WSW 2.85E-08 2.81E-08 2.77E-08 2.69E-08 2.61E-08 2.53E-08 2.46E-08 W 2.68E-08 2.60E-08 2.53E-08 2.46E-08 2.39E-08 2.33E-08 2.26E-08 WNW 3.14E-08 3.05E-08 2.95E-08 2.87E-08 2.79E-08 2.71E-08 2.64E-08 NW 3.07E-08 3.OOE-08 2.94E-08 2.86E-08 2.78E-08 2.70E-08 2.63E-08 NNW 2.38E-08 2.32E-08 2.26E-08 2.20E-08 2.14E-08 2.08E-08 2.03E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 32 of 74 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Offgas Stack) (X/Q), sec/m Miles 5.0 Sector*

N 2.05E-08 NNE 1.79E-08 NE 1.74E-08 ENE 1.34E-08 E 1.25E-08 EýE 1.88E-08 SE 2.82E-08 SSE 3.23E-08 S 2.36E-08 SSW 2.1OE-08 SW 2.39E-08 WSW 2.39E-08 W 2.21 E-08 WNW 2.57E-08 NW 2.57E-08 NNW 1.98E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 33 of 74 Table 8 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr 2

For Standard Distances (As Measured from the Offgas Stack) (D/Q), m Miles 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Sector*

N 1.44E-09 4.89E-09 6.31E-09 5.66E-09 5.OOE-09 4.44E-09 4.00E-09 NNE 2.25E-09 7.63E-09 9.79E-09 8.72E-09 7.59E-09 6.61 E-09 5.82E-09 NE 1.06E-09 3.60E-09 4.65E-09 4.17E-09 3.68E-09 3.27E-09 2.94E-09 ENE 9.73E-10 3.30E-09 4.25E-09 3.81E-09 3.34E-09 2.95E-09 2.64E-09 E 7.84E-10 2.67E-09 3.45E-09 3.11E-09 2.77E-09 2.49E-09 2.27E-09 ESE 1.06E-09 3.61E-09 4.70E-09 4.31E-09 3.92E-09 3.63E-09 3.42E-09 SE 1.42E-09 4.87E-09 6.41E-09 6.OOE-09 5.64E-09 5.40E-09 5.30E-09 SSE 1.19E-09 4.11E-09 5.46E-09 5.20E-09 5.OOE-09 4.92E-09 4.96E-09 S 9.90E-10 3.38E-09 4.42E-09 4.08E-09 3.75E-09 3.50E-09 3.34E-09 SSW 5.92E-10 2.02E-09 2.65E-09 2.45E-09 2.25E-09 2.11E-09 2.03E-09 SW 3.23E-10 1.11E-09 1.48E-09 1.41E-09 1.35E-09 1.33E-09 1.34E-09 WSW 2.97E-10 1.03E-09 1.38E-09 1.33E-09 1.31E-09 1.32E-09 1.36E-09 W 4.41E-10 1.51E-09 1.98E-09 1.85E-09 1.72E-09 1.64E-09 1.59E-09 WNW 6.23E-10 2.13E-09 1.78E-09 2.56E-09 2.35E-09 2.20E-09 2.1OE-09 NW 7.59E-10 2.59E-09 3.39E-09 3.13E-09 2.87E-09 2.69E-09 2.57E-09 NNW 1.94E-09 6.59E-09 8.48E-09 7.59E-09 6.66E-09 5.88E-09 5.25E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 34 of 74 Table 8 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/Q), m-2 Miles Sector* 0.8 0.9 1.0 1.1 1.2 1.3 1.4 N 3.47E-09 2.90E-09 2.39E-09 1.98E-09 1.67E-09 1.42E-09 1.23E-09 NNE 4.93E-09 4.OOE-09 3.24E-09 2.65E-09 2.20E-09 1.85E-09 1.58E-09 NE 2.56E-09 2.13E-09 1.76E-09 1.46E-09 1.23E-09 1.05E-09 9.02E-10 ENE 2.27E-09 1.88E-09 1.54E-09 1.27E-09 1.06E-09 9.03E-10 7.75E-10 E 2.01E-09 1.70E-09 1.41E-09 1.18E-09 1.OOE-09 8.59E-10 7.45E-10 ESE 3.12E-09 2.74E-09 2.32E-09 1.97E-09 1.69E-09 1.47E-09 1.29E-09 SE 5.02E-09 4.56E-09 3.94E-09 3.38E-09 2.94E-09 2.58E-09 2.29E-09 SSE 4.81 E-09 4.46E-09 3.89E-09 3.37E-09 2.95E-09 2.61 E-09 2.32E-09 S 3.09E-09 2.74E-09 2.34E-09 1.99E-09 1.72E-09 1.50E-09 1.32E-09 SSW 1.88E-09 1.67E-09 1.43E-09 1.22E-09 1.05E-09 9.18E-10 8.09E-10 SW 1.30E-09 1.21E-09 1.05E-09 9.14E-10 8.OOE-10 7.06E-10 6.29E-10 WSW 1.35E-09 1.27E-09 1.12E-09 9.76E-10 8.59E-10 7.62E-10 6.81E-10 W 1.49E-09 1.35E-09 1.16E-09 9.93E-10 8.61E-10 7.54E-10 6.66E-10 WNW 1.93E-09 1.71E-09 1.46E-09 1.24E-09 1.07E-09 9.35E-10 8.22E-10 NW 2.37E-09 2.1OE-09 1.80E-09 1.53E-09 1.32E-09 1.15E-09 1.01E-09 NNW 4.52E-09 3.73E-09 3.06E-09 2.53E-09 2.12E-09 1.80E-09 1.54E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 35 of 74 Table 8 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/Q), m-2 Miles 1.5 1.6 1.7 1.8 1.9 2.0 2.1 Sector*

N 1.07E-09 9.36E-10 8.27E-10 7.36E-10 6.92E-10 6.30E-10 5.75E-10 NNE 1.36E-09 1.18E-09 1.03E-09 9.08E-10 8.58E-10 7.77E-10 7.07E-10 NE 7.84E-10 6.88E-10 6.08E-10 5.41E-10 5.09E-10 4.63E-10 4.23E-10 ENE 6.72E-10 5.88E-10 5.18E-10 4.59E-10 4.32E-10 3.93E-10 3.58E-10 E 6.51E-10 5.75E-10 5.10E-10 4.56E-10 4.28E-10 3.90E-10 3.57E-10 ESE 1.14E-09 1.01E-09 9.06E-10 8.16E-10 7.64E-10 6.99E-10 t 6.43E-10 SE 2.04E-09 1.83E-09 1.65E-09 1.50E-09 1.40E-09 1.28E-09 1.18E-09 SSE 2.08E-09 1.87E-09 1.70E-09 1.54E-09 1.44E-09 1.32E-09 1.22E-09 S 1.17E-09 1.04E-09 9.35E-10 8.44E-10 7.89E-10 7.23E-10 6.66E-10 SSW 7.17E-10 6.41E-10 5.76E-10 5.20E-10 4.86E-10 4.46E-10 4.10E-10 SW 5.63E-10 5.08E-10 4.60E-10 4.18E-10 3.90E-10 3.59E-10 3.31E-10 WSW 6.12E-10 5.53E-10 5.02E-10 4.58E-10 4.26E-10 3.93E-10 3.63E-10 W 5.93E-10 5.32E-10 4.79E-10 4.34E-10 4.05E-10 3.72E-10 3.42E-10 WNW 7.28E-10 6.50E-10 5.84E-10 5.27E-10 4.92E-10 4.51E-10 4.15E-10 NW 8.97E-10 8.01E-10 7.20E-10 6.50E-10 6.07E-10 5.57E-10 5.12E-10 NNW 1.34E-09 1.17E-09 1.03E-09 9.12E-10 8.59E-10 7.81E-10 7.12E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 36 of 74 Table 8 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/Q), m-2 Miles Sector* 2.2 2.3 2.4 2.5 2.6 2.7 2.8 N 5.28E-10 4.86E-10 4.49E-10 4.17E-10 3.87E-10 3.61E-10 3.37E-10 NNE 6.46E-10 5.93E-10 5.46E-10 5.05E-10 4.68E-10 4.35E-10 4.06E-10 NE 3.88E-10 3.58E-10 3.30E-10 3.06E-10 2.85E-10 2.65E-10 2.48E-10 ENE 3.28E-10 3.02E-10 2.79E-10 2.58E-10 2.40E-10 2.24E-10 2.09E-10 E 3.28E-10 3.03E-10 2.80E-10 2.60E-10 2.42E-10 2.26E-10 2.11E-10 ESE 5.93E-10 5.48E-10 5.09E-10 4.73E-10 4.41E-10 4.12E-10 3.86E-10 SE 1.09E-09 1.01E-09 9.43E-10 8.78E-10 8.21E-10 7.68E-10 7.20E-10 SSE 1.13E-09 1.05E-09 9.78E-10 9.12E-10 8.52E-10 7.98E-10 7.48E-10 S 6.14E-10 5.69E-10 5.28E-10 4.92E-10 4.59E-10 4.29E-10 4.02E-10 SSW 3.79E-10 3.76E-10 3.90E-10 3.92E-10 3.62E-10 3.34E-10 3.10E-10 SW 3.07E-10 2.98E-10 3.09E-10 3.18E-10 2.93E-10 2.71E-10 2.51E-10 WSW 3.36E-10 3.41E-10 3.44E-10 3.58E-10 3.30E-10 3.05E-10 2.83E-10 W 3.17E-10 3.11E-10 3.09E-10 3.19E-10 2.94E-10 2.72E-10 2.53E-10 WNW 3.83E-10 3.86E-10 3.86E-10 3.89E-10 3.59E-10 3.45E-10 3.20E-10 NW 4.73E-10 4.38E-10 4.07E-10 3.78E-10 3.53E-10 3.30E-10 3.09E-10 NNW 6.53E-10 6.01E-10 5.55E-10 5.14E-10 4.77E-10 4.44E-10 4.15E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 37 of 74 Table 8 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/Q), m-2 Miles Sector* 2.9 3.0 3.1 3.2 3.3 3.4 3.5 N 3.16E-10 2.96E-10 2.78E-10 2.62E-10 2.47E-10 2.33E-10 2.20E-10 NNE 3.79E-10 3.55E-10 3.33E-10 3.13E-10 2.95E-10 2.78E-10 2.63E-10 NE 2.32E-10 2.18E-10 2.04E-10 1.92E-10 1.81E-10 1.71E-10 1.62E-10 ENE 1.95E-10 1.83E-10 1.72E-10 1.62E-10 1.52E-10 1.44E-10 1.36E-10 E 1.98E-10 1.86E-10 1.75E-10 1.64E-10 1.55E-10 1.46E-10 1.39E-10 ESE 3.62E-10 3.40E-10 3.20E-10 3.02E-10 2.85E-10 2.69E-10 2.55E-10 SE 6.76E-10 6.35E-10 5.98E-10 5.64E-10 5.33E-10 5.04E-10 4.77E-10 SSE 7.03E-10 6.62E-10 6.23E-10 5.88E-10 5.56E-10 5.26E-10 4.98E-10 S 3.77E-10 3.54E-10 3.33E-10 3.14E-10 2.97E-10 2.81E-10 2.66E-10 SSW 2.88E-10 2.68E-10 2.50E-10 2.34E-10 2.20E-10 2.06E-10 1.94E-10 SW 2.44E-10 2.27E-10 2.12E-10 1.98E-10 1.86E-10 1.75E-10 1.64E-10 WSW 2.63E-10 2.45E-10 2.29E-10 2.14E-10 2.01E-10 1.89E-10 1.78E-10 W 2.47E-10 2.30E-10 2.15E-10 2.01E-10 1.88E-10 1.77E-10 1.66E-10 WNW 2.97E-10 2.76E-10 2.58E-10 2.41E-10 2.26E-10 2.12E-10 2.OOE-10 NW 2.90E-10 2.73E-10 2.57E-10 2.42E-10 2.26E-10 2.16E-10 2.04E-10 NNW 3.88E-10 3.64E-10 3.41E-10 3.21E-10 3.03E-10 2.86E-10 2.70E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 38 of 74 Table 8 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 HrsIYr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/Q), m-2 Miles Sector* 3.6 3.7 3.8 3.9 4.0 4.1 4.2 N 2.09E-10 1.98E-10 1.88E-10 1.78E-10 1.70E-10 1.62E-10 1.54E-10 NNE 2.49E-10 2.36E-10 2.24E-10 2.13E-10 2.02E-10 1.93E-10 1.84E-10 NE 1.53E-10 1.45E-10 1.38E-10 1.31E-10 1.25E-10 1.19E-10 1.13E-10 ENE 1.29E-10 1.22E-10 1.16E-10 1.10E-10 1.05E-10 9.98E-11 9.51E-11 E 1.31E-10 1.24E-10 1.18E-10 1.12E-10 1.07E-10 1.02E-10 9.71E-11 ESE 2.42E-10 2.29E-10 2.18E-10 2.07E-1Q 1.97E-10 1.88E-10 1.79E-10 SE 4.53E-10 4.30E-10 4.08E-10 3.88E-10 3.69E-10 3.52E-10 3.36E-10 SSE 4.72E-10 4.48E-10 4.26E-10 4.05E-10 3.85E-10 3.67E-10 3.50E-10 S 2.52E-10 2.46E-10 2.34E-10 2.32E-10 2.34E-10 2.23E-10 2.12E-10 SSW 1.83E-10 1.73E-10 1.64E-10 1.59E-10 1.51E-10 1.43E-10 1.36E-10 SW 1.55E-10 1.46E-10 1.38E-10 1.31E-10 1.24E-10 1.18E-10 1.12E-10 WSW 1.68E-10 1.62E-10 1.54E-10 1.46E-10 1.38E-10 1.31E-10 1.25E-10 W 1.57E-10 1.48E-10 1.40E-10 1.33E-10 1.26E-10 1.20E-10 1.14E-10 WNW 1.88E-10 1.78E-10 1.68E-10 1.59E-10 1.51E-10 1.44E-10 1.37E-10 NW 1.94E-10 1.86E-10 1.77E-10 1.73E-10 1.76E-10 1.67E-10 1.59E-10 NNW 2.56E-10 2.43E-10 2.30E-10 2.19E-10 2.08E-10 1.98E-10 1.89E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

I1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 39 of 74 Table 8 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/Q), m-2 Miles Sector* ...4.3 4.4 4.5 4.6 4.7 4.8 4.9 N 1.47E-10 1.41E-10 1.34E-10 1.29E-10 1.23E-10 1.18E-10 1.13E-10 NNE 1.75E-10 1.67E-10 1.60E-10 1.53E-10 1.47E-10 1.41E-10 1.35E-10 NE 1.08E-10 1.03E-10 9.88E-11 9.45E-11 9.05E-11 8.68E-11 8.32E-11 ENE 9.08E-11 8.67E-11 8.29E-11 7.94E-11 7.60E-11 7.28E-11 6.99E-11 E 9.26E-11 8.85E-11 8.46E-11 8.1OE-11 7.75E-11 7.43E-11 7.13E-11 ESE 1.71E-10 1.63E-10 1.56E-10 1.49E-10 1.43E-10 1.37E-10 1.31E-10 SE 3.20E-10 3.06E-10 2.92E-10 2.80E-10 2.68E-10 2.57E-10 2.46E-10 SSE 3.34E-10 3.19E-10 3.05E-10 2.92E-10 2.80E-10 2.68E-10 2.57E-10 S 2.08E-10 1.98E-10 1.89E-10 1.81E-10 1.73E-10 1.66E-10 1.59E-10 SSW 1.30E-10 1.24E-10 1.18E-10 1.13E-10 1.08E-10 1.03E-10 9.90E-11 SW 1.08E-10 1.03E-10 9.82E-11 9.39E-11 8.98E-11 8.59E-11 8.24E-11 WSW 1.19E-10 1.13E-10 1.08E-10 1.03E-10 9.88E-11 9.46E-11 9.06E-11 W 1.08E-10 1.03E-10 9.87E-11 9.43E-11 9.02E-11 8.64E-11 8.28E-11 WNW 1.30E-10 1.24E-10 1.18E-10 1.13E-10 1.08E-10 1.04E-10 9.94E-11 NW 1.58E-10 1.51E-10 1.44E-10 1.38E-10 1.32E-10 1.26E-10 1.21E-10 NNW 1.80E-10 1.72E-10 1.65E-10 1.58E-10 1.51E-10 1.45E-10 1.39E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

I MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 40 of 74 Table 8 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

> 500 Hrs/Yr or >150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/Q), m-2 Miles 5.0 Sector*

N 1.09E-10 NNE 1.30E-10 NE 7.99E11 ENE 6.71 E-1 1 E 6.84E- 11 ESE 1.26E-10 SE 2.36E-10 SSE 2.46E-10 S 1.52E-10 SSW 9.49E-11 SW 7.90E-1 1 WSW 8.69E-11 W 7.94E-1 1 WNW 9.53E-1 1 NW 1.16E-10 NNW 1.33E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 41 of 74 Table 9 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or *150 Hrs/Qtr Site Boundary Sector* X/Q (sec/m 3) D/q (m-2 )

N 1.55E-07 9.93E-09 NNE 1.41 E-07 8.59E-09 NE 1.88E-07 1.16E-08 ENE 1.60E-07 6.04E-09 E 1.47E-07 9.15E-09 ESE SE SSE S

SSW*

SW WSW W 5.95E-08 2.91 E-09 WNW 1.39E-07 4.68E-09 NW NNW 2.33E-07 1.25E-08 Period of record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

See appropriate offgas stack long term elevated release values.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 42 of 74 Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr 3

For Standard Distances (As Measured from the Offgas Stack) (x/q), sec/m Miles Sector* 0.1 0.2 0.3 0.4 0.5 0.6 0.7 N ** ** ** 1.67E-07 1.85E-07 1.50E-07 1.18E-07 NNE ** ** ** 2.82E-07 2.50E-07 2.12E-07 1.69E-07 NE ** ** ** 7.93E-08 1:29E-07 1.21 E-07 1.08E-07 ENE ** ** ** 1.63E-07 1.87E-07 1.77E-07 1.46E-07 E ** ** ** 8.63E-08 1.47E-07 1.29E-07 1.07E-07 ESE ** ** ** 6.17E-08 1.02E-07 SE ** ** ** 1.17E-07 SSE ** ** ** *1.04E-07 S ** ** ** 7.75E-08 1.13E-07 SSW ** ** ** 7.15E-08 1.03E-07 SW ** ** ** 4.73E-08 8.22E-08 WSW ** ** ** 3.82E-08 6.85E-08 W ** ** ** 4.06E-08 7.49E-08 8.73E-08 WNW ** ** ** 4.56E-08 8.41 E-08 9.88E-08 NW ** ** ** 7.36E-08 1.08E-07 NNW ** ** ** 2.73E-07 2.57E-07 2.37E-07 1.94E-07 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

- Values less than the value for 0.4 miles.

See appropriate offgas stack long term elevated release values.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 43 of 74 Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 HrsIYr or *150 Hrs/Qtr (cont'd)

For Standard Distances,(As Measured from the Offgas Stack) (x/q), sec/m3 Miles 0.8 0.9 1.0 1.1 1.2 1.3 1.4 Sector*

N 1.52E-07 1.77E-07 1.94E-07 1.82E-07 1.96E-07 1.87E-07 2.07E-07 NNE 1.83E-07 2.05E-07 2.18E-07 2.30E-07 2.15E-07 1.99E-07 2.13E-07 NE 1.30E-07 1.60E-07 1.67E-07 1.75E-07 1.76E-07 1.61E-07 1.55E-07 ENE 1.62E-07 1.,80E-07 1.75E-07 1.84E-07 1.96E-07 1.94E-07 1.91E-07 E 1.38E-07 1.62E-07 1.65E-07 1.75E-07 1.72E-07 1.59E-07 1.77E-07 ESE 1.36E-07 1.62E-07 1.71E-07 1.57E-07 1.62E-07 1.64E-07 1.70E-07 SE 1.56E-07 1.84E-07 1.98E-07 1.93E-07 2.02E-07 2.06E-07 2.46E-07 SSE 1.42E-07 1.78E-07 1.97E-07 2.50E-07 2.26E-07 2.35E-07 2.77E-07 S 1.55E-07 1.86E-07 2.07E-07 1.92E-07 2.08E-07 2.01E-07 2.71E-07 SSW 1.43E-07 1.64E-07 1.81E-07 1.86E-07 1.83E-07 1.79E-07 2.01E-07 SW 1.17E-07 1.45E-07 1.63E-07 1.77E-07 1.70E-07 1.74E-07 2.58E-07 WSW 9.91 E-07 1.25E-07 1.31 E-07 1.43E-07 1.62E-07 1.59E-07 2.45E-07 W 1.25E-07 1.56E-07 1.76E-07 1.86E-07 2.OOE-07 2.04E-07 2.77E-07 WNW 1.39E-07 1.71E-07 1.89E-07 1.96E-07 2.04E-07 2.12E-07 2.79E-07 NW 1.44E-07 1.71E-07 1.89E-07 1.83E-07 1.72E-07 1.85E-07 2.15E-07 NNW 2.OOE-07 2.24E-07 2.43E-07 2.48E-07 2.36E-07 2.14E-07 3.06E-07 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

- Values less than the value for 0.4 miles.

See appropriate offgas stack long term elevated release values.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A I TITLE: APPENDIX A Revision 1 Page 44 of 74 Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or -150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m3 Miles Sector* 1.5 1.6 1.7 1.8 1.9 2.0 2.1 N 2.56E-07 1.89E-07 2.10E-07 2.05E-07 1.94E-07 1.88E-07 1.79E-07 NNE 2.59E-07 1.97E-07 2.23E-07 2.13E-07 1.97E-07 1.87E-07 1.77E-07 NE 1.71E-07 1.63E-07 1.55E-07 1.86E-07 1.77E-07 1.74E-07 1.66E-07 ENE 1.82E-07 1.67E-07 2.13E-07 1.89E-07 1.74E-07 1.69E-07 1.64E-07 E 1.73E-07 1.61E-07 1.51E-07 1.88E-07 1.75E-07 1.66E-07 1.59E-07 ESE 1.84E-07 1.77E-07 1.70E-07 1.55E-07 1.52E-07 1.50E-07 SE 2.06E-07 2.05E-07 1.90E-07 2.OOE-07 2.01 E-07 1.89E-07 1.77E-07 SSE 2.25E-07 2.1OE-07 2.01E-07 2.21E-07 1.77E-07 1.78E-07 1.78E-07 S 2.10E-07 2.38E-07 2.35E-07 2.18E-07 2.04E-07 2.97E-07 SSW 1.90E-07 1.84E-07 2.46E-07 2.34E-07 2.24E-07 2.20E-07 2.17E-07 SW 1.80E-07 1.74E-07 1.69E-07 1.87E-07 2.01E-07 .1.99E-07 1.91E-07 WSW 1.78E-07 1.76E-07 1.72E-07 1.89E-07 2.OOE-07 1.99E-07 1.94E-07 W 2.14E-07 2.22E-07 2.50E-07 2.50E-07 2.32E-07 2.31E-07 2.23E-07 WNW 1.96E-07 1.87E-07 1.81E-07 1.97E-07 2.11E-07 2.09E-07 2.01E-07 NW 2.OOE-07 1.90E-07 2.59E-07 2.40E-07 2.28E-07 2.1OE-07 2.01E-07 NNW 2.28E-07 2.01 E-07 1.96E-07 1.92E-07 1.87E-07 1.81 E-07 1.74E-07 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

- Values less than the value for 0.4 miles.

See appropriate offgas stack long term elevated release values.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 EPage 45 of 74 Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or 5150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m3 Miles 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Sector*

N 1.70E-07 1.66E-07 1.58E-07 1.54E-07 1.51E-07 1.47E-07 1.37E-07 NNE 1.70E-07 1.62E-07 1.57E-07 1.51E-07 1.46E-07 1.44E-07 1.38E-07 NE 1.60E-07 1.53E-07 1.53E-07 1.47E-07 1.40E-07 1.36E-07 1.30E-07 ENE 1.57E-07 1.50E-07 1.47E-07 1.44E-07 1.36E-07 1.33E-07 1.28E-07 E 1.49E-07 1.44E-07 1.36E-07 1.33E-07 1.27E-07 1.23E-07 1.17E-07 ESE 1.48E-07 1.46E-07 1.43E-07 1.38E-07 1.33E-07 1.28E-07 1.23E-07 SE 1.95E-07 1.68E-07 1.64E-07 1.61E-07 1.55E-07 1.66E-07 1.60E-07 SSE 1.69E-07 1.58E-07 1.58E-07 1.50E-07 1.42E-07 1.35E-07 1.60E-07 S 1.65E-07 1.58E-07 1.51E-07 1.46E-07 1.41E-07 1.40E-07 1.65E-07 SSW 2.1OE-07 2.11E-07 2.12E-07 1.89E-07 1.82E-07 1.76E-07 1.71E-07 SW 1.81E-07 1.90E-07 1.93E-07 1.93E-07 2.32E-07 2.23E-07 2.11E-07 WSW 1.82E-07 1.86E-07 1.79E-07 1.72E07 1.90E-07 1.84E-07 2.12E-07 W 2.15E-07 2.18E-07 2.20E-07 2.19E-07 2.10E-07 2.08E-07 2.05E-07 WNW 1.89E-07 1.89E-07 1.90E-07 1.93E-07 2.26E-07 2.18E-07 2.11E-07 NW 1.91E-07 1.86E-07 1.80E-07 1.76E-07 1.72E-07 1.69E-07 1.64E-07 NNW 1.72E-07 1.68E-07 1.68E-07 1.59E-07 1.54E-07 1.45E-07 1.36E-07 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

- Values less than the value for 0.4 miles.

See appropriate offgas stack long term elevated release values.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 46 of 74 Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Offgas Stack) (x/q), sec/m Miles 2.9 3.0 3.1 3.2 3.3 3.4 3.5 Sector*

N 1.35E-07 1.34E-07 1.32E-07 1.30E-07 1.28E-07 1.25E-07 1.23E-07 NNE 1.30E-07 1.26E-07 1.22E-07 1.19E-07 1.15E-07 1.12E-07 1.09E-07 NE 1.22E-07 1.20E-07 1.16E-07 1.14E-07 1.11E-07 1.09E-07 1.06E-07 ENE 1.21E-07 1.81E-07 1.15E-07 1.13E-07 1.10E-07 1.07E-07 1.04E-07 E 1.13E-07 1.1OE-07 1.05E-07 1.03E-07 1.01E-07 1.01E-07 9.17E-08 ESE 1.19E-07 1.14E-07 1.08E-07 1.06E-07 1.03E-07 9.93E-08 9.891-08 SE 1.31E-07 1.33E-07 1.35E-07 1.32E-07 1.26E-07 1.20E-07 1.15E-07 SSE 1.30E-07 1.32E-07 1.34E-07 1.35E-07 1.31 E-07 1.26E-07 1.22E-07 S 1.63E-07 1.54E-07 1.46E-07 1.42E-07 1.34E-07 1.33E-07 1.32E-07 SSW 1.66E-07 1.57E-07 1.51E-07 1.46E-07 1.39E-07 1.34E-07 1.31E-07 SW 1.97E-07 1.82E-07 1.79E-07 1.71E-07 1.64E-07 1.59E-07 1.54E-07 WSW 2.02E-07 1.95E-07 1.85E-07 1.77E-07 1.69E-07 1.62E-07 1.54E-07 W 2.01 E-07 1.92E-07 1.90E-07 1.84E-07 1.82E-07 1.78E-07 1.71 E-07 WNW 2.02E-07 1.96E-07 1.92E-07 1..90E-07 1.85E-07 1.78E-07 1.75E-07 NW 1.70E-07 1.50E-07 1.48E-07 1.47E-07 1.39E-07 1.37E-07 1.38E-07 NNW 1.31E-07 1.30E-07 1.27E-07 1.22E-07 1.19E-07 1.16E-07 1.13E-07 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

- Values less than the value for 0.4 miles.

See appropriate offgas stack long term elevated release values.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1I Paqe 47 of 74 Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/mi Miles 3.6 3.7 3.8 3.9 4.0 4.1 4.2 Sector*

N 1.18E-07 1.15E-07 1.14E-07 1.11E-07 1.08E-07 1.06E-07 1.05E-07 NNE 1.07E-07 1.05E-07 1.01E-07 9.83E-08 9.61E-08 9.38E-08 9.04E-08 NE 1.03E-07 1.01 E-07 9.84E-08 9.65E-08 9.20E-08 9.OOE-08 8.81 E-08 ENE 1.03E-07 1.01 E-07 9.56E-08 9.34E-08 9.07E-08 8.79E-08 8.58E-08 E 9.OOE-08 8.74E-08 8.37E-08 8.17E-08 7.94E-08 7.80E-08 7.64E-08 ESE 9.67E-08 9.46E-08 8.97E-08 8.91 E-08 8.79E-08 8.64,E-08 8.45E-08 SE 1.10E-07 1.06E-07 1.06E-07 1.02E-07 9.89E-08 1.03E-07 9.99E-08 SSE 1.18E-07 1.15E-07 1.11E-07 1.08E-07 1.12E-07 1.10E-07 1.08E-07 S 1.27E-07 1.23E-07 1.21E-07 1.17E-07 1.13E-07 1.10E-07 1.10E-07 SSW 1.27E-07 1.24E-07 1.21E-07 .1.17E-07 1.15E-07 1.13E-07 1.08E-07 SW 1.52E-07 1.46E-07 1.43E-07 1.43E-07 1.41 E-07 1.40E-07 1.38E-07 WSW 1.49E-07 1.43E-07 1.44E-07 1.43E-07 1.34E-07 1.33E-07 1.34E-07 W 1.66E-07 1.61E-07 1.56E-07 1.49E-07 1.42E-07 1.39E-07 1.35E-07 WNW 1.73E-07 1.67E-07 1.63E-07 1.58E-07 1.54E-07 1.49E-07 1.45E-07 NW 1.34E-07 1.27E-07 1.25E-07 1.24E-07 1.21E-07 1.19E-07 1.17E-07 NNW 1.1OE-07 1.07E-07 1.02E-07 1.OOE-07 9.75E-08 9.52E-08 9.37E-08 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

- Values less than the value for 0.4 miles.

See appropriate offgas stack long term elevated release values.

M/arb

I- I MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 48 of 74 Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (x/q), sec/m3 Miles Sector* 4.3 4.4 4.5 4.6 4.7 4.8 4.9 N 1.01E-07 9.83E-08 9.37E-08 9.14E-08 8.97E-08 8.80E-08 8.61E-08 NNE 8.88E-08 8.71E-08 -8.63E-08 8.42E-08 8.14E-08 8.OOE-08 7.84E-08 NE 8.69E-08 8.53E-08 8.40E-08 8.25E-08 8.19E-08 8.02E-08 7.81E-08 ENE 8.42E-08 8.26E-08 8.09E-08 7.87E-08 7.69E-08 7.55E-08 7.38E-08 E 7.33E-08 7.27E-08 7.02E-08 6.85E-08 6.71 E-08 6.56E-08 6.40E-08 ESE 8.27E-08 8.10E-08 7.40E-08 7.77E-08 7.61E-08., 7.46E-08 7.32E-08 SE 9.71E-08 9.47E-08 9.24E-08 9.01E-08 8.78E-08 8.56E-08 8.18E-08 SSE 1.07E-07 1.02E-07 1.02E-07 9.90E-08 9.66E-08 9.41E-08 1.19E-07 S 1.06E-07 1.04E-07 1.02E-07 9.72E-08 9.63E-08 9.35E-08 9.03E-08 SSW 1.05E-07 1.03E-07 1.01 E-07 9.78E-08 9.46E-08 9.20E-08 9.OOE-08 SW 1.38E-07 1.37E-07 1.34E-07 1.30E-07 1.26E-07 1.24E-07 1.22E-07 WSW 1.31E-07 1.28E-07 1.28E-07 1.22E-07 1.20E-07 1.19E-07 1.18E-07 W 1.33E-07 1.28E-07 1.25E-07 1.24E-07 1.20E-07 1.17E-07 1.15E-07 WNW 1.43E-07 1.38E-07 1.35E-07 1.33E-07 1.33E-07 1.27E-07 1.25E-07 NW 1.14E-07 1.12E-07 1.11E-07 1.07E-07 1.04E-07 1.01E-07 9.74E-08 NNW 9.12E-08 8.89E-08 8.64E-08 8.31E-08 8.26E-08 8.08E-08 7.72E-08 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

- Values less than the value for 0.4 miles.

See appropriate offgas stack long term elevated release values.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 49 of 74 Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m3 Miles Sector* 5.0 N 8.28E-08 NNE 7.56E-08 NE 7.58E-08 ENE 7.11E-08 E 6.33E-08 ESE 7.16E-08 SE 8.10E-08 SSE 1.11E-07 S 8.84E-08 SSW 8.80E-08 SW 1.19E-07 WSW 1.13E-07 W 1.13E-07 WNW 1.21 E-07 NW 9.51 E-08 NNW 7.53E-08 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

- Values less than the value for 0.4 miles.

See appropriate offgas stack long term elevated release values.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 50 of 74 Table 11 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 HrsYr or <150 Hrs/Qtr For Standard Distances (As Measured from the Offgas Stack) (D/q), m-2 Miles Sector* 0.1 0.2 0.3 0.4 0.5 0.6 0.7 N ** ** ** 1.32E-08 1.31 E-08 9.45E-09 6.60E-09 NNE ** ** ** 2.39E-08 1.86E-08 1.39E-09 9.88E-09 NE ** ** ** 6.01 E-09 7.80E-09 6.24E-09 4.92E-09 ENE ** ** ** 1.31E-08 1.14E-08 8.79E-09 6.20E-09 E ** ** ** 7.37E-09 9.17E-09 6.52E-09 4.58E-09 ESE ** ** ** 3.74E-09 5.28E-09 SE ** ** ** 6.26E-09 SSE ** ** ** 6.60E-09 S ** ** ** 4.41 E-09 5.43E-09 SSW ** ** ** 3.39E-09 4.09E-09 SW ** ** ** 2.30E-09 3.34E-09 WSW ** ** ** 2.16E-09 3.17E-09 W ** ** ** 2.22E-09 3.38E-09 3.35E-09 WNW ** ** ** 2.55E-09 3.89E-09 3.94E-09 NW ** ** ** 3.17E-09 4.01E-09 NNW ** ** ** 2.13E-08 1.68E-08 1.30E-08 9.18E-09 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

- Values less than the value for 0.4 miles.

See appropriate offgas stack long term elevated release values.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 51 of 74 Table 11 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 HrsYr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/q), m-2 Miles 0.8 0.9 1.0 1.1 1.2 1.3 1.4 Sector*

N 7.46E-09 7.64E-09 7.08E-09 5.61 E-09 5.20E-09 4.30E-09 4.21E-09 NNE 9.52E-09 9.50E-09 8.74E-09 7.97E-09 6.49E-09 5.28E-09 5.05E-09 NE 5.32E-09 5.92E-09 5.43E-09 4.98E-09 4.43E-09 3.60E-09 3.11E-09 ENE 6.OOE-09 5.94E-09 5.01 E-09 4.56E-09 4.25E-09 3.75E-09 3.31 E-09 E 5.18E-09 5.40E-09 4.74E-09 4.36E-09 3.76E-09 3.08E-09 3.09E-09 ESE 6.16E-09 6.58E-09 5.98E-09 4.72E-09 4.30E-09 3.89E-09 3.66E-09 SE 7.39E-09 7.99E-09 7.50E-09 6.40E-09 5.96E-09 5.50E-09 6.04E-09 SSE 7.58E-09 8.26E-09 7.59E-09 6.02E-09 6.29E-09 5.79E-09 6.12E-09 S 6.46E-09 6.88E-09 6.53E-09 5.17E-09 4.89E-09 4.19E-09 5.08E-09 SSW 4.90E-09 4.99E-09 4.71E-09 4.17E-09 3.58E-09 3.12E-09 3.17E-09 SW 5.67E-09 4.25E-09 3.97E-09 3.65E-09 3.03E-09 2.74E-09 3.65E-09 WSW 3.83E-09 4.16E-09 3.58E-09 3.23E-09 3.12E-09 2.66E-09 3.64E-09 W 4.14E-09 4.59E-09 4.35E-09 3.87E-09 3.59E-09 3.20E-09 3.87E-09 WNW 4.86E-09 5.37E-09 5.09E-09 4.51E-09 4.10E-09 3.77E-09 4.44E-09 NW 4.75E-09 5.16E-09 5.03E-09 4.25E-09. 3.55E-09 3.43E-09 3.86E-09 NNW 8.37E-09 8.39E-09 7.94E-09 7.09E-09 5.96E-09 4.82E-09 6.18E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1Page 52 of 74 Table 11 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 HrsYr or <150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Offgas Stack) (D/q), m Miles 1.5 1.6 1.7 1.8 1.9 2.0 2.1 Sector*

N 4.63E-09 3.13E-09 3.20E-09 2.90E-09 2.69E-09 2.48E-09 2.24E-09 NNE 5.50E-09 3.78E-09 4.02E-09 3.56E-09 3.27E-09 2.95E-09 2.66E-09 NE 3.1OE-09 2.65E-09 2.28E-09 2.48E-09 2.27E-09 2.08E-09 1.85E-09 ENE 2.86E-09 2.40E-09 2.81 E-09 2.31 E-09 2.08E-09 1.91 E-09 1.76E-09 E 2.73E-09 2.35E-09 2.05E-09 2.39E-09 2.18E-09 1.96E-09 1.81E-09 ESE 3.62E-09 3.20E-09 2.86E-09 2.38E-09 2.22E-09 2.10E-09 SE 4.68E-09 4.28E-09 3.67E-09 3.61 E-09 3.49E-09 3.09E-09 2.75E-09 SSE 4.50E-09 3.93E-09 3.57E-09 3.70E-09 2.90E-09 2.79E-09 2.69E-09 S 3.59E-09 3.58E-09 3.34E-09 3.04E-09 2.74E-09 2.55E-09 SSW 2.73E-09 2.34E-09 2.81E-09 2.42E-09 2.17E-09 1.97E-09 1.80E-09 SW 2.32E-09 1.98E-09 1.72E-09 1.72E-09 1.72E-09 1.57E-09 1.40E-09 WSW 2.38E-09 2.07E-09 1.80E-09 1.77E-09 1.73E-09 1.58E-09 1.42E-09 W 2.70E-09 2.47E-09 2.47E-09 2.22E-09 1.92E-09 1.75E-09 1.57E-09 WNW 2.83E-09 2.38E-09 2.06E-09 2.02E-09 2.03E-09 1.84E-09 1.64E-09 NW 3.09E-09 2.70E-09 3.41 E-09 2.94E-09 2.70E-09 2.35E-09 2.13E-09 NNW 4.19E-09 3.41E-09 3.09E-09 2.84E-09 2.74E-09 2.54E-09 2.33E-09 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Offgas Stack.

See appropriate long term values.

M/arb

I MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 53 of 74 Table 11 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 HrsYr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/q), m-2 Miles Sector* 2.2 2.3 2.4 2.5 2.6 2.7 2.8 N 2.04E-09 1.90E-09 1.75E-09 1.64E-09 1.53E-09 1.42E-09 1.27E-09 NNE 2.45E-09 2.25E-09 2.10E-09 1.95E-09 1.82E-09 1.73E-09 1.61E-09 NE 1.67E-09 1.51E-09 1.42E-09 1.30E-09 1.19E-09 1.11E-09 1.03E-09 ENE 1.61E-09 1.47E-09 1.38E-09 1.29E-09 1.18E-09 1.12E-09 1.04E-09 E 1.62E-09 1.51E-09 1.37E-09 1.30E-09 1.20E-09 1.12E-09 1.04E-09 ESE 1.99E-09 1.88E-09 1.78E-09 1.66E-09 1.55E-09 1.44E-09 1.34E-09 SE 2.89E-09 2.38E-09 2.24E-09 2.12E-09 1.97E-09 2.09E-09 1.97E-09 SSE 2.47E-09 2.24E-09 2.18E-09 2.01E-09 1.85E-09 1.72E-09 1.98E-09 S 2.06E-09 1.92E-09 1.80E-09 1.67E-09 1.54E-09 1.46E-09 1.64E-09 SSW 1.62E-09 1.64E-09 1.73E-09 1.57E-09 1.46E-09 1.37E-09 1.29E-09 SW 1.24E-09 1.27E-09 1.35E-09 1.40E-09 1.60E-09 1.48E-09 1.34E-09 WSW 1.24E-09 1.29E-09 1.26E-09 1.27E-09 1.35E-09 1.27E-09 1.42E-09 W 1.40E-09 1.40E-09 1.42E-09 1.47E-09 1.35E-09 1.27E-09 1.20E-09 WNW 1.43E-09 1.46E-09 1.48E-09 1.52E-09 1.68E-09 1.58E-09 1.44E-09 NW 1.93E-09 1.80E-09 1.67E-09 1.57E-09 1.45E-09 1.35E-09 1.25E-09 NNW 2.22E-09 2.09E-09 2.02E-09 1.85E-09 1.74E-09 1.58E-09 1.44E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 54 of 74 Table 11 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 HrsYr or *150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/q), m-2 Miles 2.9 3.0 3.1 3.2 3.3 3.4 3.5 Sector*

N 1.20E-09 1.15E-09 1.08E-09 1.03E-09 9.77E-10 9.22E-10 8.74E-10 NNE 1.47E-09 1.39E-09 1.31E-09 1.25E-09 1.17E-09 1.11E-09 1.06E-09 NE 9.37E-10 8.90E-10 8.37E-10 7.98E-10 7.54E-10 7.19E-10 6.82E10 ENE 9.64E-10 9.11E-10 8.65E-10 8.28E-10 7.85E-10 7.41E-10 7.09E-10 E 9.72E-10 9.18E-10 8.55E-10 8.15E-10 7.80E-10 7.63E-10 6.77E-10 ESE 1.26E-09 1.18E-09 1.09E-09 1.04E-09 9.85E-10 9.24E-10 9.01E-10 SE 1.58E-09 1.57E-09 1.56E-09 1.49E-09 1.40E-09 1.31E-09 1.23E-09 SSE 1.57E-09 1.55E-09 1.54E-09 1.52E-09 1.44E-09 1.36E-09 1.28E-09 S 1.56E-09 1.41E-09 1.29E-09 1.21E-09 1.10E-09 1.05E-09 1.01E-09 SSW 1.22E-09 1.12E-09 1.04E-09 9.83E-10 9.12E-10 8.63E-10 8.24E-10 SW 1.25E-09 1.11E-09 1.05E-09 9.69E-10 8.96E-10 8.36E-10 7.83E-10 WSW 1.31E-09 1.22E-09 1.13E-09 1.05E-09 9.80E-10 9.14E-10 8.49E-10 W 1.19E-09 1.09E-09 1.04E-09 9.69E-10 9.26E-10 8.75E-10 8.11E-10 WNW 1.31E-09 1.21E-09 1.12E-09 1.06E-09 9.78E-10 9.OOE-10 8.43E-10 NW 1.23E-09 1.03E09 9.72E-10 9.26E-10 8.37E-10 7.94E-10 7.63E-10 NNW 1.35E-09 1.30E-09 1.25E-09 1.17E-09 1.11E-09 1.06E-09 1.44E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 55 of 74 Table 11 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 HrsYr or *150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/q), m-2 Miles 3.7 3.8 3.9 4.0 4.1 4.2 Sector* 3.6 N 8.20E-10 7.85E-10 7.57E-10 7.26E-10 6.90E-10 6.64E-10 6.42E-10 NNE 1.01E-09 9.76E-10 9.14E-10 8.72E-10 8.35E-10 7.98E-10 7.55E-10 NE 6.45E-10 6.15E-10 5.85E-10 5.60E-10 5.22E-10 4.99E-10 4.77E-10 ENE 6.83E-10 6.52E-10 6.06E-10 5.79E-10 5.51E-10 5.22E-10 5.O0E-10 E 6.49E-10 6.16E-10 5.77E-10 5.51E-10 5.25E-10 5.05E-10 4.85E-10 ESE 8.60E-10 8.21E-10 7.64E-10 7.41E-10 7.16E-10 6.91E-10 6.61E-10 SE 1.16E-09 1.1OE-09 1.08E-09 1.02E-09 9.68E-10 9.93E-10 9.48E-10 SSE 1.21E-09 1.15E-09 1.08E-09 1.02E-09 1.04E-09 9.94E-10 9.52E-10 S 9.44E-10 9.15E-10 8.76E-10 8.65E-10 8.63E-10 8.23E-10 7.95E-10 SSW 7.76E-10 7.35E-10 6.96E-10 6.69E-10 6.35E-10 6.08E-10 5.70E-10 SW 7.42E-10 6.82E-10 6.45E-10 6.21E-10 5.90E-10 5.64E-10 5.37E-10 WSW 7.90E-10 7.45E-10 7.21E-10 6.88E-10 6.21E-10 5.94E-10 5.78E-10 W 7.69E-10 7.29E-10 6.93E-10 6.50E-10 6.08E-10 5.83E-10 5.56E-10 WNW 8.16E-10 7.73E-10 7.41E-10 7.05E-10 6.72E-10 6.38E-10 6.11E-10 NW 7.24E-10 6.75E-10 6.45E-10 6.43E-10 6.48E-10 6.19E-10 5.95E-10 NNW 9.60E-10 9.10E-10 8.53E-10 8.18E-10 7.82E-10 7.49E-10 7.22E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 56 of 74 Table 11 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 HrsYr or <150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Offgas Stack) (D/q), m Miles Sector* 4.3 4.4 4.5 4.6 4.7 4.8 4.9 N 6.07E-10 5.80E-10 5.43E-10 5.20E-10 5.01E-10 4.83E-10 4.65E-10 NNE 7.27E-10 7.OOE-10 6.81E-10 6.52E-10 6.20E-10 5.98E-10 5.76E-10 NE 4.61E-10 4.42E-10 4.27E-10 4.10E-10 3.99E-10 3.83E-10 3.66E-10 ENE 4.81E-10 4.63E-10 4.45E-10 4.24E-10 4.07E-10 3.92E-10 3.76E-10 E 4.55E-10 4.43E-10 4.19E-10 4.02E-10 3.86E-10 3.71E-10 3.55E-10 ESE 6.34E-10 6.06E-10 5.45E-10 5.59E-10 5.39E-10 5.19E-10 4.97E-10 SE 9.05E-10 8.70E-10 8.33E-10 8.01E-10 7.69E-10 7.38E-10 6.94E-10 SSE 9.43E-10 8.59E-10 8.39E-10 8.03E-10 7.73E-10 7.40E-10 9.18E-10 S 7.75E-10 7.42E-10 7.10E-10 6.65E-10 6.49E-10 6.21E-10 5.91E-10 SSW 5.39E-10 5.15E-10 4.91E-10 4.69E-10 4.47E-10 4.28E-10 4.13E-10 SW 5.23E-10 5.02E-10 4.74E-10 4.53E-10 4.35E-10 4.22E-10 4.08E-10 WSW 5.46E-10 5.16E-10 4.98E-10 4.69E-10 4.55E-10 4.45E-10 4.34E-10 W 5.35E-10 5.09E-10 4.89E-10 4.77E-10 4.53E-10 4.36E-10 4.20E-10 WNW 5.91E-10 5.61E-10 5.41E-10 5.24E-10 5.16E-10 4.87E-10 4.69E-10 NW 5.88E-10 5.66E-10 5.44E-10 5.17E-10 4.96E-10 4.72E-10 4.48E-10 NNW 6.90E-10 6.60E-10 6.30E-10 5.96E-10 5.83E-10 5.61E-10 5.28E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

ITITLE:

MONTICELLO NUCLEAR GENERATING APPENDIX A PLANT ODCM-APP-A Revision 1 Page 57 of 74 Table 11 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

< 500 HrsYr or <150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Offgas Stack) (D/q), m Miles 5.0 Sector*

N 4.39E-10 NNE 5.46E- 10 NE 3.48E-1 0 ENE 3.56E-10 E 3.45E-10 ESE 4.80E-10 SE 6.78E-10 SSE 8.45E-10 S 5.70E-1 0 SSW 3.98E-1 0 SW 3.92E-10 WSW 4.12E-10 W 4.05E-10 WNW 4.48E-10 NW 4.31 E-1 0 NNW 5.06E-10 Period of Record: 9-1-76 to 8-31 -78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1 Page 58 of 74 Table 12 Monticello Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases < 500 HrsIYr or <150 Hrs/Qtr Distance - X/q (sec/m) 3 D/q (m-2 )

Sector* Miles Meters No Decay Undepleted N 0.51 821. 5.18E-06 7.19E-08 NNE 0.58 933. 3.51E-06 5.02E-08 NE 0.65 1046. 2.33E-06 2.93E-08 ENE 0.83 1336. 1.82E-06 1.69E-08 E 0.59 950. 3.67E-06 3.90E-08 ESE 0.59 950. 4.95E-06 6.51E-08 SE 0.61 982. 4.96E-06 6.49E-08 SSE 0.43 692. 8.06E-06 1.18E-07 S 0.34 547. 6.92E-06 9.30E-08 SSW 0.32 515. 5.92E-06 7.04E-08 SW 0.32 515. 6.31E-06 8.24E-08 WSW 0.35 563. 4.91 E-06 5.50E-08 W 0.48 772. 3.38E-06 3.82E-08 WNW 0.68 1094. 2.94E-06 2.88E-08 NW 0.43 692. 5.70E-06 7.09E-08 NNW 0.53 853. 4.44E-06 6.09E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Paqe 59 of 74 Table 13 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr 3

For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m Miles Sector* 0.1 0.2 0.3 0.4 0.5 0.6 0.7 N 7.30E-05 2.19E-05 1.10E-05 7.14E-06 5.28E-06 4.19E-06 3.46E-06 NNE 5.81E-05 1.77E-05 8.96E-06 5.84E-06 4.23E-06 3.34E-06 2.79E-06 NE 4.26E-05 1.29E-05 6.69E-06 4.33E-06 3.19E-06 2.54E-06 2.16E-06 ENE 4.27E-05 1.29E-05 6.65E-06 4.32E-06 3.15E-06 2.53E-06 2.16E-06 E 5.76E-05 1.73E-05 9.22E-06 6.20E-06 4.51 E-06 3.63E-06 3.04E-06 ESE 7.80E-05 2.30E-05 1.24E-05 8.28E-06 6.16E-06 4.84E-06 4.01 E-06 SE 8.52E-05 2.48E-05 1.31E-05 8.85E-06 6.46E-06 5.08E-06 4.18E-06 SSE 8.87E-05 2.60E-05 1.36E-05 8.91E-06 6.53E-06 5.15E-06 4.22E-06 S 4.89E-05 1.47E-05 7.95E-06 5.35E-06 3.95E-06 3.17E-06 2.63E-06 SSW 4.04E-05 1.19E-05 6.58E-06 4.38E-06 3.34E-06 2.80E-06 2.46E-06 SW 4.37E-05 1.34E-05 7.26E-06 4.76E-06 3.62E-06 2.97E-06 2.62E-06 WSW 3.65E-05 1.09E-05 6.13E-06 4.11E-06 3.17E-06 2.70E-06 2.43E-06 W 4.07E-05 1.23E-05 6.47E-06 4.32E-06 3.19E-06 2.67E-06 2.35E-06 WNW 5.53E-05 1.65E-05 8.74E-06 5.74E-06 4.22E-06 3.37E-06 2.85E-06 NW 6.25E-05 1.85E-05 9.62E-06 6.32E-06 4.65E-06 3.76E-06 3.15E-06 NNW 7.11E-05 2.11E-05 1.04E-05 6.70E-06 4.78E-06 3.76E-06 3.15E-06 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

M/arb

I MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1I Paqe 60 of 74 Table 13 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or 5150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m3 Miles Sector* 0.8 0.9 1.0 1.1 1.2 1.3 1.4 N 2.84E-06 2.43E-06 2.05E-06 1.79E-06 1.61E-06 1.46E-06 1.31E-06 NNE 2.33E-06 2.02E-06 1.71E-06 1.51E-06 1.37E-06 1.24E-06 1.12E-06 NE 1.83E-06 1.58E-06 1.37E-06 1.21E-06 1.11E-06 9.99E-06 9.23E-06 ENE 1.87E-06 1.64E-06 1.46E-06 1.31E-06 1.20E-06 1.11E-06 1.04E-06 E 2.51E-06 2.18E-06 1.87E-06 1.64E-06 1.50E-06 1.38E-06 1.26E-06 ESE 3.34E-06 2.77E-06 2.38E-06 2.07E-06 1.89E-06 1.59E-06 1.44E-06 SE 3.42E-06 2.82E-06 2.39E-06 2.07E-06 1.78E-06 1.57E-06 1.40E-06 SSE 3.47E-06 2.89E-06 2.43E-06 2.12E-06 1.86E-06 1.64E-06 1.47E-06 S 2.27E-06 1.96E-06 1.70E-06 1.51E-06 1.38E-06 1.27E-06 1.15E-06 SSW 2.18E-06 1.93E-06 1.74E-06 1.52E-06 1.48E-06 1.33E-06 1.21E-06 SW 2.26E-06 1.99E-06 1.81E-06 1.58E-06 1.44E-06 1.32E-06 1.21E-06 WSW 2.18E-06 1.94E-06 1.82E-06 1.63E-06 1.48E-06 1.39E-06 1.29E-06 W 2.07E-06 1.87E-06 1.67E-06 1.52E-06 1.41E-06 1.29E-06 1.19E-06 WNW 2.47E-06 2.15E-06 1.86E-06 1.68E-06 1.52E-06 1.37E-06 1.26E-06 NW 2.60E-06 2.22E-06 1.89E-06 1.64E-06 1.49E-06 1.34E-06 1.22E-06 NNW 2.64E-06 2.25E-06 1.90E-06 1.68E-06 1.50E-06 1.37E-06 1.25E-06 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 61 of 74 Table 13 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m Miles 1.5 1.6 1.7 1.8 1.9 2.0 2.1 Sector*

N 1.28E-06 1.15E-06 1.05E-06 9.60E-07 9.OOE-07 8.28E-07 7.67E-07 NNE 1.11E-06 9.94E-07 9.14E-07 8.44E-07 7.91E-07 7.31E-07 6.94E-07 NE 8.63E-07 7.69E-07 7.26E-07 7.09E-07 6.71 E-07 6.31 E-07 6.08E-07 ENE 9.50E-07 9.08E-07 8.65E-07 8.22E-07 7.80E-07 7.31 E-07 7.OOE-07 E 1.15E-06 1.06E-06 1.02E-06 9.40E-07 8.72E-07 8.20E-07 7.72E-07 ESE 1.31E-06 1.16E-06 1.07E-06 1.03E-06 9.41E-07 8.73E-07 8.08E-07 SE 1.26E-06 1.15E-06 1.06E-06 1.01E-06 9.48E-07 8.74E-07 8.19E-07 SSE 1.33E-06 1.17E-06 1.09E-06 1.05E-06 9.69E-07 9.01E-07 8.34E-07 S 1.13E-06 1.OOE-06 9.21E-07 8.55E-07. 7.94E-07 7.33E-07 6.96E-07 SSW 1.19E-06 1.12E-06 1.08E-06 1.04E-06 1.02E-06 1.02E-06 9.95E-07 SW 1.18E-06 1.09E-06 1.06E-06 1.01E-06 9.62E-07 9.53E-07 9.34E-07 WSW 1.27E-06 1.21E-06 1.16E-06 1.09E-06 1.05E-06 1.04E-06 1.02E-06 W 1.19E-06 1.12E-06 1.06E-06 1.02E-06 1.01E-06 9.95E-07 9.91E-07 WNW 1.25E-06 1.16E-06 1.11E-06 1.06E-06 1.02E-06 1.01E-06 9.90E-07 NW 1.09E-06 9.91E-07 9.57E-07 8.87E-07 8.18E-07 7.65E-07 7.25E-07 NNW 1.24E-06 1.12E-06 1.03E-06 9.46E-07 8.85E-07 8.17E-07 7.74E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1Page 62 of 74 Table 13 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m3 Miles 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Sector*

N 7.21 E-07 6.79E-07 6.38E-07 6.10E-07 5.92E-07 5.77E-07 5.62E-07 NNE 6.47E-07 6.14E-07 5.79E-07 5.45E-07 5.26E-07 4.99E-07 4.80E-07 NE 5.81E-07 5.55E-07 5.23E-07 5.11E-07 4.86E-07 4.63E-07 4.47E-07 ENE 6.68E-07 6.41E-07 6.1OE-07 5.90E-07 5.62E-07 5.41E-07 5.22E-07 E 7.25E-07 6.92E-07 6.51E-07 6.19E-07 5.74E-07 5.53E-07 5.35E-07 ESE 7.53E-07 7.07E-07 6.62E-07 6.25E-07 5.91 E-07 5.56E-07 5.28E-07 SE 7.76E-07 7.36E-07 7.02E-07 6.75E-07 6.37E-07 6.04E-07 5.74E-07 SSE 7.74E-07 7.28E-07 6.87E-07 6.46E-07 6.10E-07 5.77E-07 5.51E-07 S 6.44E-07 6.08E-07 5.80E-07 5.54E-07 5.40E-07 5.25E-07 5.14E-07 SSW 9.71E-07 9.89E-07 9.88E-07 9.58E-07 9.03E-07 8.47E-07 8.10E-07 SW 9.09E-07 9.03E-07 8.97E-07 8.65E-07 8.24E-07 7.90E-07 7.65E-07 WSW 9.86E-07 9.81 E-07 9.76E-07, 9.48E-07 8.87E-07 8.35E-07 7.92E-07 W 9.66E-07 9.80E-07 9.78E-07 9.56E-07 9.12E-07 8.87E-07 8.66E-07 WNW 9.90E-07 9.88E-07 9.97E-07 9.75E-07 9.54E-07 9.43E-07 9.29E-07 NW 6.91E-07 6.47E-07 6.07E-07 5.89E-07 5.72E-07 5.60E-07 5.51E-07 NNW 7.27E-07 6.76E-07 6.47E-07 6.28E-07 5.95E-07 5.74E-07 5.52E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 63 of 74 Table 13 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m3 Miles Sector* 2.9 3.0 3.1 3.2 3.3 3.4 3.5 N 5.48E-07 5.29E-07 5.16E-07 5.02E-07 4.91E-07 4.99E-07 4.82E-07 NNE 4.65E-07 4.49E-07 4.30E-07 4.15E-07 3.98E-07 3.83E-07 3.71E-07 NE 4.31E-07 4.13E-07 3.96E-07 3.82E-07 3.66E-07 3.51E-07 3.39E-07 ENE 5.06E-07 4.87E-07 4.64E-07 4.52E-07 4.36E-07 4.25E-07 4.14E-07 E 5.13E-07 5.00E-07 4.80E-07 4.62E-07 4.45E-07 4.27E-07 4.09E-07 ESE 5.01E-07 4.74E-Q7 4.57E-07 4.36E-07 4.15E-07 3.99E-07 3.83E-07 SE 5.51E-07 5.28E-07 5.05E-07 4.78E-07 4.55E-07 4.35E-07 4.16E-07 SSE 5.27E-07 5.06E-07 4.85E-07 4.59E-07 4.44E-07 4.26E-07 4.10E-07 S 5.03E-07 4.91 E-07 5.05E-07 4.93E-07 4.96E-07 4.76E-07 4.67E-07 SSW 7.70E-07 7.34E-07 7.03E-07 6.76E-07 6.48E-07 6.25E-07 5.97E-07 SW 7.38E-07 7.09E-07 6.87E-07 6.61E-07 6.43E-07 6.16E-07 5.94E-07 WSW 7.52E-07 7.13E-07 6.84E-07 6.52E-07 6.24E-07 6.02E-07 5.73E-07 W 8.43E-07 8.16E-07 7.91E-07 7.64E-07 7.44E-07 7.09E-07 6.90E-07 WNW 9.07E-07 8.94E-07 8.62E-07 8.44E-07 8.18E-07 8.OOE-07 7.84E-07 NW 5.34E-07 5.22E-07 5.28E-07 5.15E-07 5.16E-07 5.04E-07 4.97E-07 NNW 5.28E-07 5.08E-07 4.93E-07 4.74E-07 4.55E-07 4.35E-07 4.20E-07 Period of Record: 9-1-76 to 8-31-78

Measured relevant to the Reactor Vent.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 64 of 74 Table 13 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m Miles Sector* 3.6 3.7 3.8 3.9 4.0 4.1 4.2 N 4.65E-07 4.49E-07 4.32E-07 4.19E-07 4.06E-07 3.95E-07 3.83E-07 NNE 3.58E-07 3.47E-07 3.37E-07 3.25E-07 3.16E-07 3.18E-07 3.08E-07 NE 3.29E-07 3.18E-07 3.1OE-07 3.01E-07 2.93E-07 2.90E-07 2.77E-07 ENE 4.02E-07 3.90E-07 3.80E-07 3.72E-07 3.60E-07 3.55E-07 3.46E-07 E 3.97E-07 3.83E-07 3.72E-07 3.74E-07 3.66E-07 3.55E-07 3.44E-07 ESE 3.71E-07 3ý57E-07 3.42E-07 3.37E-07 3.28E-07 3.17E-07 3.06E-07 SE 4.01 E-07 3.86E-07 3.70E-07 3.61 E-07 3.48E-07 3.44E-07 3.42E-07 SSE 3.92E-07 3.78E-07 3.68E-07 3.66E-07 3.52E-07 3.41 E-07 3.29E-07 S 4.49E-07 4.43E-07 4.36E-07 4.29E-07 4.22E-07 4.16E-07 4.12E-07 SSW 5.79E-07 5.58E-07 5.49E-07 5.38E-07 5.25E-07 5.14E-07 5.02E-07 SW 5.80E-07 5.64E-07 5.48E-07 5.28E-07 5.15E-07 5.04E-07 4.94E-07 WSW 5.61E-07 5.59E-07 5.50E-07 5.35E-07 5.23E-07 5.13E-07 4.90E-07 W 6.66E-07 6.40E-07 6.16E-07 5.94E-07 5.73E-07 5.54E-07 5.36E-07 WNW 7.52E-07 7.22E-07 6.90E-07 6.65E-07 6.37E-07 6.19E-07 5.97E-07 NW 4.79E-07 4.71E-07 4.66E-07 4.57E-07 4.49E-07 4.41E-07 4.38E-07 NNW 4.07E-07 3.95E-07 3.86E-07 3.72E-07 3.68E-07 3.57E-07 3.51 E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 65 of 74 Table 13 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m3 Miles Sector* 4.3 4.4 4.5 4.6 4.7 4.8 4.9 N 3.65E-07 3.55E-07 3.41E-07 3.33E-07 3.25E-07 3.20E-07 3.12E-07 NNE 3.08E-07 3.OOE-07 2.85E-07 2.79E-07 2.72E-07 2.66E-07 2.59E-07 NE 2.79E-07 2.69E-07 2.53E-07 2.53E-07 2.48E-07 2.41 E-07 2.36E-07 ENE 3.36E-07 3.29E-07 3.12E-07 3.07E-07 3.OOE-07 2.98E-07 2.91E-07 E 3.37E-07 3.28E-07 3.19E-07 3.11E-07 3.02E-07 2.95E-07 2.85E-07 ESE 2.98E-07 2.89E-07 2.80E-07 2.71 E-07 2.63E-07 2.56E-07 2.48E-07 SE 3.32E-07 3.20E-07 3.10E-07 3.01E-07 2.92E-07 2.83E-07 2.75E-07 SSE 3.21E-07 3.11E-07 3.02E-07 2.92E-07 2.84E-07 2.75E-07 2.68E-07 S 4.03E-07 3.94E-07 3.87E-07 3.76E-07 3.65E-07 3.53E-07 3.43E-07 SSW 4.92E-07 4.81E-07 4.71E-07 4.57E-07 4.39E-07 4.26E-07 4.11E-07 SW 4.84E-07 4.79E-07 4.69E-07 4.54E-07 4.39E-07 4.25E-07 4.12E-07 WSW 4.89E-07 4.77E-07 4.66E-07 4.50E-07 4.35E-07 4.24E-07 4.11E-07 W 5.19E-07 5.03E-07 4.87E-07 4.73E-07 4.56E-07 4.43E-07 4.25E-07 WNW 5.78E-07 5.59E-07 5.41 E-07 5.25E-07 5.09E-07 4.92E-07 4.78E-07 NW 4.29E-07 4.20E-07 4.11E-07 4.OOE-07 3.88E-07 3.77E-07 3.66E-07 NNW 3.45E-07 3.32E-07 3.22E-07 3.15E-07 3.07E-07 2.98E-07 2.91E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 66 of 74 Table 13 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases 5 500 Hrs/Yr or <150 Hrs/Qtr (cont'd) 3 For Standard Distances (As Measured from the Offgas Stack) (X/q), sec/m Miles 5.0 Sector*

N 3.03E-07 NNE 2.52E-07 NE 2.30E-07 ENE 2.84E-07 E 2.82E-07 E$E 2.41 E-07 SE 2.67E-07 SSE 2.62E-07 S 4.67E-07 SSW 4.OOE-07 SW 3.99E-07 WSW 3.99E-07 W 4.12E-07 WNW 4.66E-07 NW 3.52E-07 NNW 2.78E-07 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Reactor Vent.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 67 of 74 Table 14 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr For Standard Distances (As Measured from the Offgas Stack) (D/q), m-2 Miles 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Sector*

N 6.91 E-07 2.69E-07 1.52E-07 1.01 E-07 7.36E-08 5.53E-08 4.28E-08 NNE 5.55E-07 2.24E-07 1.30E-07 8.81E-08 6.33E-08 4.71E-08 3.65E-08 NE 3.90E-07 1.58E-07 9.37E-08 6.24E-08 4.48E-08 3.32E-08 2.59E-08 ENE 3.50E-07 1.43E-07 8.49E-08 5.71E-08 4.08E-08 3.02E-08 2.33E-08 E 4.63E-07 1.86E-07 1.10E-07 7.39E-08 5.16E-08 3.82E-08 2.91E-08 ESE 8.49E-07 3.27E-07 1.86E-07 1.21 E-07 8.62E-08 6.33E-08 4.88E-08 SE 9.41E-07 3.56E-07 1.96E-07 1.29E-07 9.01E-08 6.69E-08 5.19E-08 SSE 9.60E-07 3.67E-07 2.02E-07 1.32E-07 9.36E-08 6.99E-08 5.40E-08 S 4.50E-07 1.79E-07 1.06E-07 7.18E-08 5.11E-08 3.80E-08 2.88E-08 SSW 3.27E-07 1.30E-07 7.81E-08 5.13E-08 3.67E-08 2.75E-08 2.15E-08 SW 4.13E-07 1.67E-07 9.51E-08 6.02E-08 4.24E-08 3.12E-08 2.46E-08 WSW 2.82E-07 1.14E-07 6.90E-08 4.53E-08 3.27E-08 2.46E-08 1.94E-08 W 3.06E-07 1.25E-07 7.41E-08 5.02E-08 3.55E-08 2.68E-08 2.1OE-08 WNW 4.25E-07 1.69E-07 9.89E-08 6.61E-08 4.73E-08 3.52E-08 2.73E-08 NW 5.40E-07 2.12E-07 1.21E-07 7.91E-08 5.61E-08 4.23E-08 3.28E-08 NNW 6.42E-07 2.53E-07 1.42E-07 9.39E-08 6.65E-08 4.95E-08 3.87E-08 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 68 of 74 Table 14 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Offgas Stack) (D/q), m Miles Sector* 0.8 0.9 1.0 1.1 1.2 1.3 1.4 N 3.25E-08 2.57E-08 1.99E-08 1.61E-08 1.34E-08 1.13E-08 9.77E-09 NNE 2.79E-08 2.22E-08 1.71E-08 1.39E-08 1.16E-08 9.77E-09 8.45E-09 NE 1.99E-08 1.56E-08 1.23E-08 1.00E-08 8.52E-09 7.15E-09 6.20E-09 ENE 1.80E-08 1.41E-08 1.12E-08 9.11E-09 7.57E-09 6.45E-09 5.55E09 E 2.17E-08 1.70E-08 1.33E-08 1.07E-08 9.01E-09 7.69E-09 6.56E-09 ESE 3.78E-08 2.92E-08 2.35E-08 1.93E-08 1.59E-08 1.34E-08 1.16E-08 SE 3.99E-08 3.1OE-08 2.48E-08 2.04E-08 1.67E-08 1.40E-08 1.20E-08 SSE 4.16E-08 3.26E-08 2.57E-08 2.12E-08 1.76E-08 1.48E-08 1.27E-08 S 2.26E-08 1.78E-08 1.41E-08 1.16E-08 9.75E-09 8.85E-09 7.48E-09 SSW 1.69E-08 1.34E-08 1.1OE-08 9.02E-09 7.60E-09 6.52E-09 5.84E-09 SW 1.89E-08 1.51E-08 1.25E-08 1.01E-08 8.52E-09 7.27E-09 6.61E-09 WSW 1.52E-08 1.20E-08 1.01 E-08 8.20E-09 6.85E-09 5.94E-09 5.35E-09 W 1.62E-08 1.31E-08 1.04E-08 8.64E-09 7.29E-09 6.19E-09 5.49E-09 WNW 2.16E-08 1.72E-08 1.36E-08 1.12E-08 9.47E-09 7.95E-09 7.18E-09 NW 2.49E-08 1.97E-08 1.55E-08 1.26E-08 1.07E-08 9.05E-09 7.82E-09 NNW 3.OOE-08 2.36E-08 1.82E-08 1.49E-08 1.22E-08 1.05E-08 9.21E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1Page 69 of 74 Table 14 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Offgas Stack) (D/q), m Miles 1.5 1.6 1.7 1.8 1.9 2.0 2.1 Sector*

N 8.90E-09 7.61E-09 6.62E-09 5.81E-09 5.23E-09 4.63E-09 4.13E-09 NNE 7.75E-09 6.61E-09 5.79E-09 5.1OE-09 4.56E-09 4.07E-09 3.71E-09 NE 5.46E-09 4.54E-09 4.02E-09 3.69E-09 3.30E-09 2.93E-09 2.48E-09 ENE 4.71E-09 4.19E-09 3.73E-09 3.33E-09 2.98E-09 2.64E-09 2.40E-09 E 5.63E-09 4.93E-09 4.49E-09 3.96E-09 3.53E-09 3.18E-09 2.88E-09 ESE 1.01 E-08 8.60E-09 7.60E-09 7.07E-09 6.28E-09 5.64E-09 5.07E-09 SE 1.03E-08 9.OOE-09 7.94E-09 7.17E-09 6.48E-09 5.74E-09 5.17E-09 SSE 1.1OE-08 9.30E-09 8.32E-09 7.72E-09 6.89E-09 6.20E-09 5.56E-09 S 6.89E-09 5.81E-09 5.11E-09 4.54E-09 4.06E-09 3.61E-09 3.30E-09 SSW 5.34E-09 4.70E-09 4.14E-09 3.63E-09 3.26E-09 3.21E-09 2.88E-09 SW 6.60E-09 5.31 E-09 4.72E-09 4.14E-09 3.66E-09 3.56E-09 3.24E-09 WSW 4.91 E-09 4.44E-09 3.92E-09 3.40E-09 3.03E-09 3.03E-09 2.76E-09 W 5.07E-09 4.44E-09 3.82E-09 3.36E-09 3.07E-09 2.96E-09 2.71 E-09 WNW 6.67E-09 5.78E-09 5.06E-09 4.43E-09 3.92E-09 3.71 E-09 3.34E-09 NW 6.67E-09 5.73E-09 5.26E-09 4.65E-09 4.11E-09 3.68E-09 3.35E-09 NNW 8.53E-09 7.30E-09 6.36E-09 5.58E-09 5.OOE-09 4.42E-09 4.03E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 I Page 70 of 74 Table 14 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/q), m-2 Miles Sector* 2.2 2.3 2.4 2.5 2.6 2.7 2.8 N 3.75E-09 3.42E-09 3.11E-09 2.88E-09 2.68E-09 2.53E-09 2.38E-09 NNE 3.34E-09 3.06E-09 2.79E-09 2.55E-09 2.38E-09 2.20E-09 2.06E-09 NE 2.43E-09 2.21E-09 2.02E-09 1.89E-09 1.74E-09 1.61E-09 1.51E-09 ENE 2.18E-09 2.03E-09 1.85E-09 1.70E-09 1.57E-09 1.46E-09 1.36E-09 E 2.61E-09 2.41E-09 2.20E-09 2.02E-09 1.82E-09 1.71E-09 1.61E-09 ESE 4.60E-09 4.21E-09 3.84E-09 3.54E-09 3.28E-09 3.01E-09 2.80E-09 SE 4.71E-09 4.43E-09 4.07E-09 3.79E-09 3.49E-09 3.24E-09 3.02E-09 SSE 5.01 E-09 4.58E-09 4.21 E-09 3.86E-09 3.55E-09 3.28E-09 3.06E-09 S 2.95E-09 2.70E-09 2.50E-09 2.32E-09 2.15E-09 2.OOE-09 1.86E-09 SSW 2.60E-09 2.45E-09 2.28E-09 2.06E-09 1.90E-09 1.75E-09 1.64E-09 SW 2.93E-09 2.72E-09 2.53E-09 2.29E-09 2.11E-09 1.96E-09 1.84E-09 WSW 2.48E-09 2.31E-09 2.16E-09 1.98E-09 1.81E-09 1.68E-09 1.56E-09 W 2.44E-09 2.29E-09 2.12E-09 1.93E-09 1.77E-09 1.66E-09 1.57E-09 WNW 3.09E-09 2.85E-09 2.67E-09 2.43E-09 2.25E-09 2.11E-09 1.98E-09 NW 3.06E-09 2.76E-09 2.58E-09 2.41E-09 2.25E-09 2.1OE-09 1.98E-09 NNW 3.64E-09 3.26E-09 3.04E-09 2.85E-09 2.62E-09 2.45E-09 2.29E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 71 of 74 Table 14 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/q), m-2 Miles Sector* 2.9 3.0 3.1 3.2 3.3 3.4 3.5 N 2.23E-09 2.09E-09 1.96E-09 1.84E-09 1.74E-09 1.73E-09 1.63E-09 NNE 1.94E-09 1.82E-09 1.71E-09 1.61E-09 1.51E-09 1.42E-09 1.35E-09 NE 1.42E-09 1.33E-09 1.25E-09 1.17E-09 1.1OE-09 1.03E-09 9.77E-10 ENE 1.28E-09 1.20E-09 1.11E-09 1.05E-09 9.92E-10 9.42E-10 8.97E-10 E 1.50E-09 1.43E-09 1.34E-09 1.26E-09 1.19E-09 1.11E-09 1.04E-10 ESE 2.60E-09 2.42E-09 2.29E-09 2.15E-09 2.OOE-09 1.90E-09 1.79E-09 SE 2.84E-09 2.67E-09 2.50E-09 2.32E-09 2.18E-09 2.05E-09 1.93E-09 SSE 2.86E-09 2.69E-09 2.53E-09 2.34E-09 2.23E-09 2.10E-09 1.98E-09 S 1.74E-09 1.63E-09 1.64E-09 1.54E-09 1.48E-09 1.36E-09 1.29E-09 SSW 1.53E-09 1.44E-09 1.36E-09 1.29E-09 1.22E-09 1.16E-09 1.10E-09 SW 1.73E-09 1.61 E-09 1.52E-09 1.43E-09 1.36E-09 1.27E-09 1.21 E-09 WSW 1.46E-09 1.37E-09 1.29E-09 1.22E-09 1.15E-09 1.1OE-09 1.04E-09 W 1.48E-09 1.40E-09 1.32E-09 1.24E-09 1.18E-09 1.10E-09 1.05E-09 WNW 1.84E-09 1.74E-09 1.61E-09 1.52E-09 1.42E-09 1.52E-09 1.56E-09 NW 1.83E-09 1.72E-09 1.67E-09 1.59E-09 1.53E-09 1.42E-09 1.36E-09 NNW 2.13E-09 2.01E-09 1.90E-09 1.79E-09 1.67E-09 1.57E-09 1.49E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 72 of 74 Table 14 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Offgas Stack) (D/q), m Miles Sector* 3.6 3.7 3.8 3.9 4.0 4.1 4.2 N 1.55E-09 1.47E-09 1.40E-09 1.34E-09 1.29E-09 1.24E-09 1.20E-09 NNE 1.27E-09 1.21E-09 1.16E-09 1.09E-09 1.04E-09 1.03E-09 9.85E-10 NE 9.27E-10 8.82E-10 8.44E-10 8.04E-10 7.68E-10 7.48E-10 7.05E-10 ENE 8.50E-10 8.08E-10 7.71E-10 7.38E-10 7.01E-10 6.78E-10 6.48E-10 E 9.92E-10 9.39E-10 8.94E-10 8.83E-10 8.48E-10 8.09E-10 7.71E-10 ESE 1.71 E-09 1.61 E-09 1.53E-09 1.48E-09 1.42E-09 1.35E-09 1.29E-09 SE 1.83E-09 1.73E-09 1.64E-09 1.57E-09 1.50E-09 1.46E-09 1.44E-09 SSE 1.86E-09 1.76E-09 1.69E-09 1.65E-09 1.56E-09 1.49E-09 1.42E-09 S 1.20E-09 1.16E-09 1.11E-09 1.07E-09 1.03E-09 9.96E-10 9.67E-10 SSW 1.04E-09 9.85E-10 9.51E-10 9.16E-10 8.78E-10 8.46E-10 8.15E-10 SW 1.14E-09 1.08E-09 1.02E-09 9.62E-10 1.01E-09 9.88E-10 9.93E-10 WSW 9.89E-10 9.58E-10 9.19E-10 8.74E-10 8.35E-10 8.03E-10 7.53E-10 W 1.01E-09 9.61E-10 9.21E-10 8.85E-10 8.52E-10 8.21E-10 7.93E-10 WNW 1.49E-09 1.42E-09 1.34E-09 1.29E-09 1.23E-09 1.18E-09 1.14E-09 NW 1.28E-09 1.23E-09 1.19E-09 1.14E-09 1.1OE-09 1.06E-09 1.03E-09 NNW 1.41E-09 1.34E-09 1.29E-09 1.22E-09 1.19E-09 1.14E-09 1.10E-09 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 Page 73 of 74 Table 14 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases

< 500 Hrs/Yr or <150 Hrs/Qtr (cont'd)

For Standard Distances (As Measured from the Offgas Stack) (D/q), m-2 Miles Sector* 4.3 4.4 4.5 4.6 4.7 4.8 4.9 N 1.13E-09 1.09E-09 1.05E-09 1.02E-09 9.85E-10 9.67E-10 9.40E-10 NNE 9.68E-10 9.29E-10 8.71E-10 8.40E-10 8.07E-10 7.79E-10 7.49E-10 NE 6.98E-10 6.63E-10 6.16E-10 6.06E-10 5.87E-10 5.62E-10 5.45E-10 ENE 6.19E-10 5.96E-10 5.55E-10 5.37E-10 5.17E-10 5.06E-10 4.86E-10 E 7.43E-10 7.10E-10 6.81E-10 6.53E-10 6.25E-10 6.01E-10 5.72E-10 ESE 1.24E-09 1.18E-09 1.13E-09 1.08E-09 1.04E-09 9.99E-10 9.57E-10 SE 1.38E-09 1.31E-09 1.26E-09 1.21E-09 1.16E-09 1.12E-09 1.07E-09 SSE 1.36E-09 1.30E-09 1.25E-09 1.18E-09 1.14E-09 1.09E-09 1.05E-09 S 9.28E-10 8.94E-10 8.64E-10 8.38E-10 8.12E-10 7.83E-10 7.60E-10 SSW 7.88E-10 7.61E-10 7.38E-10 7.17E-10 6.89E-10 6.70E-10 6.49E-10 SW 1.09E-09 1.06E-09 1.11E-09 1.07E-09 1.02E-09 9.83E-10 9.46E-10 WSW 7.39E-10 7.09E-10 7.33E-10 7.08E-10 6.86E-10 6.70E-10 6.50E-10 W 7.67E-10 7.44E-10 7.22E-10 7.02E-10 6.79E-10 6.61E-10 6.36E-10 WNW 1.10E-09 1.06E-09 1.02E-09 9.86E-10 9.55E-10 9.22E-10 8.94E-10 NW 9.96E-10 9.60E-10 9.27E-10 9.OOE-10 8.73E-10 8.48E-10 8.24E-10 NNW 1.07E-09 1.02E-09 1.01E-09 9.77E-10 9.43E-10 9.13E-10 8.84E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 1 1 Page 74 of 74 Table 14 Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases 5 500 Hrs/Yr or <150 Hrs/Qtr (cont'd) 2 For Standard Distances (As Measured from the Offgas Stack) (D/q), m Miles 5.0 Sector*

N 9.09E-10 NNE 7.21 E-10 NE 5.24E-10 ENE 4.68E-10 E 5.58E-1 0 ESE 9.19E-10 SE 1.04E-09 SSE 1.01 E-09 S 1.29E-09 SSW 6.32E-10 SW 9.10E-10 WSW 6.32E- 10 W 6.21 E-10 WNW 8.70E-10 NW 7.93E-1 0 NNW 8.42E-10 Period of Record: 9-1-76 to 8-31-78 Measured relevant to the Offgas Stack.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 1 of 20 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECORD OF REVISION .......................................... 2 Table 1 Monticello Nuclear Generating Plant Site Meteorology - Stability Class A, E levatio n 10 Mete rs ........................................................................................ . .3 Table 2 Monticello Nuclear Generating Plant Site Meteorology - Stability Class B,.

E levatio n 10 Me te rs ........................................................................................ . .4 Table 3 Monticello Nuclear Generating Plant Site Meteorology - Stability Class C, E levatio n 10 Mete rs ....................................................................................... . .5 Table 4 Monticello Nuclear Generating Plant Site Meteorology - Stability Class D, E levatio n 10 Mete rs ........................................................................................ . .6 Table 5 Monticello Nuclear Generating Plant Site Meteorology - Stability Class E, E levatio n 10 Mete rs ........................................................................................ . .7 Table 6 Monticello Nuclear Generating Plant Site Meteorology - Stability Class F, E levatio n 10 Mete rs ........................................................................................ . .8 Table 7 Monticello Nuclear Generating Plant Site Meteorology - Stability Class G, E levatio n 10 Mete rs ........................................................................................ . .9 Table 8 Monticello Nuclear Generating Plant Site Meteorology - All Classes Combined E levation 10 Mete rs ...................................................................................... .. 10 Table 9 Monticello Nuclear Generating Plant Site Meteorology - Stability Class A, E levation 100 Mete rs .................................................................................... 12 Table 10 Monticello Nuclear Generating Plant Site Meteorology - Stability Class B, E levatio n 100 Mete rs .................................................................................... .. 13 Table 11 Monticello Nuclear Generating Plant Site Meteorology - Stability Class C, E levation 100 Mete rs .................................................................................... .. 14 Table 12 Monticello Nuclear Generating Plant Site Meteorology - Stability Class D, -

E levation 100 Meters ..................................................................................... 15 Table 13 Monticello Nuclear Generating Plant Site Meteorology - Stability Class E, E levation 100 Mete rs ..................................................................................... 16 Table 14 Monticello Nuclear Generating Plant Site Meteorology - Stability Class F, E levation 100 Mete rs ...................................................................................... 17 Table 15 Monticello Nuclear Generating Plant Site Meteorology - Stability Class G, E levation 100 Mete rs .................................................................................... 18 Table 16 Monticello Nuclear Generating Plant Site Meteorology - All Classes Combined E levation 100 Mete rs ..................................................................................... 19 Approval: PCR 01234936 I M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 I Page 2 of 20 1.0 RECORD OF REVISION Revision No. Date Reason for Revision 0 October - 2000 Moved previous ODCM-07.01 and ODCM-08.01 tables of meterological data to this document.

1 November - 2001 Typo, replaced missing M in Monticello on Page 1 of Table of Content.

2 October - 2010 Corrected Table of Contents page references, corrected wind direction error in Table 1 and added/corrected Wind Speed values to Table 12.

M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2.

Paqe 3 of 20 Table 1 Monticello Nuclear Generating Plant Site Meteorology - Stability Class A, Elevation 10 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 10 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 4 18 63 30 7 0 122 NNE 2 20 30 14 2 0 68 NE 1 13 21 26 2 2 i 65 ENE 1 14 16 4 0 0 35 E 0 28 40 12 0 0 80 ESE 3 33 50 5 6 0 97 SE 2 26 50 35 12 3 128 SSE 8 46 96 122 11 0 283 S 9 36 68 117 42 3 275 SSW 5 63 94 58 20 4 244 SW 4 35 64 32 5 3 143 WSW 3 25 74 26 0 0 128 W 0 29 47 18 1 0 95 WNW 4 34 73 79 14 0 204 NW 3 29 58 61 3 0 154 NNW 6 29 109 67 13 0 224 VAR 0 0 0 0 0 0 0 Total Hours This Class: 2350 Hours of Calm This Class: 5 Percent of All Data This Class: 14.27 M/arb

I1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 4 of 20 Table 2 Monticello Nuclear Generating Plant Site Meteorology - Stability Class B, Elevation 10 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 10 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 14 19 4 40 NNE 10 8 5 27 NE 6 3 2 .11 ENE 11 7 2 21 E 13 4 0 17 ESE 15 10 3 32 SE 9 9 9 27 SSE 12 9 9 32 S 13 21 7 44 SSW 22 19 4 46 SW 11 10 3 24 WSW 12 11 3 27 W 12 19 8 42 WNW 11 20 21 58 NW 8 22 13 47 NNW 8 40 26 80 VAR 0 0 0 0 Total Hours This Class: 575 Hours of Calm This Class: 0 Percent of All Data This Class: 3.49 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 5 of 20 Table 3 Monticello Nuclear Generating Plant Site Meteorology - Stability Class C, Elevation 10 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 10 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 12 16 8 0 36 NNE 13 13 4 1 34 NE 10 11 5 2 30 ENE 19 4 2 0 26 E 8 10 2 0 20 ESE 14 12 5 2 35 SE 12 16 9 0 37 SSE 10 21 8 0 39 S 12 28 18 3 67 SSW 16 12 3 2 37 SW 11 14 3 1 32 WSW 5 11 2 0 20 W 22 19 5 1 51 WNW 23 38 19 3 87 NW 17 18 30 4 72 NNW 22 40 27 5 97 VAR 0 0 0 0 0 Total Hours This Class: 720 Hours of Calm This Class: 0 Percent of All Data This Class: 4.37 M/arb

I.

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 6 of 20 Table 4 Monticello Nuclear Generating Plant Site Meteorology - Stability Class D, Elevation 10 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 10 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 1.9 to 24 Above 24 Total N 9 107 135 39 3 291 NNE 32 132 87 18 1 270 NE 37 129 116 150 3 335 ENE 43 153 66 30 1 293 E 29 125 64 27 0 245 ESE 28 107 148 60 4 347 SE 16 103 153 36 2 310 SSE 13 97 103 35 2 250 S 19 84 96 33 1 233 SSW 16 73 70 19 6 185 SW 19 58 52 10 4 143 WSW 14 69 63 14 2 163 W 16 79 98 33 3 234 WNW 13 112 262 159 25 573 NW 17 82 255 232 61 650 NNW 19 104 247 246 49 666 VAR 0 0 0 0 0 0 Total Hours This Class: 5198 Hours of Calm This Class: 10 Percent of All Data This Class: 31.56 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 7 of 20 Table 5 Monticello Nuclear Generating Plant Site Meteorology - Stability Class E, Elevation 10 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 10 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 20 98 57 6 0 0 181 NNE 43 81 35 2 0 0 161 NE 35 94 41 6 2 0 178 ENE 50 122 29 10 0 0 211 E 36 109 40 2 0 0 187 ESE 26 117 46 6 0 0 195 SE 19 111 136 18 2 0 286 SSE 20 95 116 33 1 0 265 S 22 84 144 43 1 0 294 SSW 22 72 99 25 9 0 227 SW 23 84 57 10 2 0 176 WSW 37 86 44 4 0 0 171 W 30 156 123 12 4 0 325 WNW 24 195 233 41 2 0 495 NW 20 133 247 84 0 0 484 NNW 25 145 217 38 1 0 426 VAR 0 0 0 0 0 0 0 Total Hours This Class: 4269 Hours of Calm This Class: 7 Percent of All Data This Class: 25.92 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITJLE: APPENDIX B Revision 2 Page 8 of 20 Table 6 Monticello Nuclear Generating Plant Site Meteorology - Stability Class F, Elevation 10 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 10 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 30 62 3 01 95 NNE 37 54 0 0 91 NE 29 29 0 0 58 ENE 32 28 0 0 60 E 32 59 5 0 96 ESE 25 97 11 0 133 SE 22 83 19 0 124 SSE 16 122 12 0 150 S 24 93 31 0 151 SSW 27 67 14 0 108 SW 27 52 7 0 86 WSW 52 68 8 0 128 W 51 91 14 0 156 WNW 28 68 9 0 105 NW 36 67 12 0 115 NNW 30 119 29 0 178 VAR 0 0 0 0 0 Total Hours This Class: 1847 Hours of Calm This Class: 13 Percent of All Data This Class: 11.21 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 9 of 20 Table 7

Monticello Nuclear Generating Plant Site Meteorology - Stability Class G, Elevation 10 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 10 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 45 31 0 76 NNE 40 16 0 56 NE 33 12 0 45 ENE 31 5 0 36 E 46 18 0 .64 ESE 47 54 2 103 SE 52 34 1 88 SSE 67 111 3 187 S 64 109 23 198 SSW 61 65 10 138 SW 43 32 1 76 WSW 77 37 0 114 W 53 31 0 84 WNW 37 13 2 52 NW 49 15 3 71 NNW 47 48 2 97 VAR 0 0 0 0 Total Hours This Class: 1512 Hours of Calm This Class: 27 Percent of All Data This Class: 9.18 M/arb

ODCM-APP-B IMONTICELLO TITLE:

Table 8 APPENDIX B NUCLEAR GENERATING PLANT Revision 2 Page 10 of 20 Monticello Nuclear Generating Plant Site Meteorology - All Classes Combined Elevation 10 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 10 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 110 342 293 87 8 841 NNE 161 326 173 43 4 707 NE 137 293 192 89 9 722 ENE 159 352 122 48 1 682 E 143 360 163 43 0 709 ESE 132 437 279 79 15 942 SE 111 378 384 108 16 1000 SSE 126 493 360 213 14 1206 S 146 431 411 223 48 1262 SSW 135 378 318 111 37 985 SW 119 283 205 58 12 680 WSW 186 302 211 49 2 751 W 154 420 320 76 11 987 WNW 110 456 637 319 49 1574 NW 129 351 615 424 71 1593 NNW 130 475 684 404 72 1768 VAR 0 0 0 0 0 0 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Paqe 11 of 20 Table 8 Monticello Nuclear Generating Plant Site Meteorology - All Classes Combined Elevation 10 Meters (cont'd)

Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Data Recovery for the Period Total Hours: 17520 Hours of Calm: 62 Hours of Bad Data: 1049 Percent Data Recovery: 94.01 4

Percent Acceptable Observations in each Stability Class Class A 14.27 Class B 3.49 Class C 4.37 Class D 31.56 Class E 25.92 Class F 11.21 Class G 9.18 Average Wind Speed for each Wind Category 1 to 3 MPH 2.5 4 to 7 MPH 5.5 8 to 12 MPH 9.7 13 to 18 MPH 14.7 19 to 24 MPH 20.6 Above 24 MPH 27.2 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 12 of 20 Table 9 Monticello Nuclear Generating Plant Site Meteorology - Stability Class A, Elevation 100 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 100 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 2 10 1 0 14 NNE 1 1 0 0 3 NE 1 0 0 0 1

ENE 0 0 1 0 1 E 4 0 0 0 5 ESE 4 0 0 0 4 SE 4 8 0 6 18 SSE 5 42 36 15 99 S 3 28 35 12 79 SSW 10 37 53 39 140 SW 4 19 6 5 36 WSW 3 16 10 1 30 W 0 7 2 0 9 WNW. 2 4 1 2 9 NW 3 6 6 3 18 NNW 1 14 4 0 19 VAR 0 0 0 0 0 Total Hours This Class: 489 Hours of Calm This Class: 4 Percent of All Data This Class: 2.95 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 13 of 20 Table 10 Monticello Nuclear Generating Plant Site Meteorology - Stability Class B, Elevation 100 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 100 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 13 18 3 37 NNE 3 9 2 22 NE 7 6 0 14 ENE 3 7 2 14 E 15 1 0 18 ESE 17 3 0 27 SE 15 9 2 36 SSE 28 12 8 60 S 23 18 3 49 SSW 23 17 5 60 SW 18 8 5 39 WSW 8 14 2 32 W 8 18 5 35 WNW 12 17 7 46 NW 14 23 12 60 NNW 8 25 11 47 VAR 0 0 0 0 Total Hours This Class: 602 Hours of Calm This Class: 6 Percent of All Data This Class: 3.64 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 14 of 20 Table 11 Monticello Nuclear Generating Plant Site Meteorology - Stability Class C, Elevation 100 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 100 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 9 26 25 13 2 78 NNE 12 14 14 8 2 52 NE 7 9 8 2 0 27 ENE 5 12 6 1 0 24 E 13 19 1 2 0 35 ESE 13 25 11 1 1 51 SE 17 12 8 4 0 43 SSE 26 38 19 10 2 95 S 15 23 13 7 4 62 SSW 28 33 23 11 2 97 SW 20 24 17 4 0 65 WSW 17 27 14 3 1 65 W 10 20 14 8 3 58 WNW 10 16 27 18 9 83 NW 8 22 38 26 10 106 NNW 3 16 42 19 8 90 VAR 0 0 0 0 0 0 Total Hours This Class: 1041 Hours of Calm This Class: 10 Percent of All Data This Class: 4.29 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 15 of 20 Table 12 Monticello Nuclear Generating Plant Site Meteorology - Stability Class D, Elevation 100 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 100 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 11 51 82 95 181 130 550 NNE 11 41 106 120 50 12 340 NE 15 53 105 93 25 8 299 ENE 14 41 131 83 59 12 340 E 18 61 103 62 38 6 288 ESE 17 55 101 85 47 31 336 SE 13 57 108 152 68 23 421 SSE 9 63 119 148 71 17 427 S 16 61 95 122 61 8 363 SSW 14 61 85 120 46 34 360 SW 14 54 80 74 32 11 265 WSW 13 52 69 44 21 11 210 W 8 45 89 59 29 17 247 WNW 14 51 141 165 77 62 510 NW 7 50 170 366 312 143 1048 NNW 12 52 176 312 350 229 1131 VAR 0 0 0 0 0 0 0 Total Hours This Class: 7264 Hours of Calm This Class: 129 Percent of All Data This Class: 43.87 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 16 of 20 Table 13 Monticello Nuclear Generating Plant Site Meteorology - Stability Class E, Elevation 100 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 100 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 4 17 59 99 82 11 272 NNE 7 18 37 68 32 3 165 NE 4 16 47 58 20 . 2 147 ENE 4 33 68 93 27 9 234 E 4 27 64 75 15 2 187 ESE 5 20 46 74 37 11 193 SE 10 23 63 97 58 3 254 SSE 5 22 58 94 105 16 300 S 5 13 57 140 97 20 332 SSW 2 25 49 115 125 22 338 SW 7 24 67 102 84 18 302 WSW 3 19 42 73 37 8 182 W 5 20 47 55 35 2 164 WNW 4 18 63 136 93 13 327 NW 6 15 71 172 141 12 417 NNW 3 27 86 244 198 17 575 VAR 0 0 0 0 0 0 0 Total Hours This Class: 4433 Hours of Calm This Class: 44 Percent of All Data This Class: 26.77 M/arb

I1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 17 of 20 Table 14 Monticello Nuclear Generating Plant Site Meteorology - Stability Class F, Elevation 100 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 100 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 12 28 45 28. 116 NNE 4 15 39 16 77 NE 7 23 49 17 101 ENE 7 19 40 6 76 E 10 26 15 3 58 ESE 16 28 31 14 99 SE 7 28 46 19 107 SSE 8 25 62 40 138 S 12 30 60 36 140 SSW 11 28 58 57 159 SW 14 19 75 33 146 WSW 6 22 28 29 90 W 14 22 27 16 80 WNW 10 44 49 27 135 NW 12 37 87 29 169 NNW 14 38 51 21 129 VAR 0 0 0 0 0 Total Hours This Class: 1826 Hours of Calm This Class: 6 Percent of All Data This Class: 11.03 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 18 of 20 Table 15 Monticello Nuclear Generating Plant Site Meteorology - Stability Class G, Elevation 100 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 100 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 8 16 9 0 39 NNE 12 15 8 1 39 NE 6 11 16 4 41 ENE 11 15 11 3 47 E 7 11 11 1 38 ESE 12 9 16 2 40 SE 9 10 5 9 39 SSE 6 12 8 11 44 S 6 13 30 12 64 SSW 14 26 55 21 117 SW 9 21 26 25 85 WSW 16 29 16 14 80 W 14 8 16 18 61 WNW 15 23 21 9 73 NW 7 14 17 1 41 NNW 13 21 7 5 54 VAR 0 0 0 0 0 Total Hours This Class: 904 Hours of Calm This Class: 2 Percent of All Data This Class: 5.46 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 19 of 20 Table 16 Monticello Nuclear Generating Plant Site Meteorology - All Classes Combined Elevation 100 Meters Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Wind Speed (mph) at 100 Meter Level Direction 1 to 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 27 101 239 387 257 95 1106 NNE 25 94 191 259 109 20 698 NE 28 90 203 230 68 11 630 ENE 25 99 248 240 99 25 736 E 34 121 242 165 59 8 629 ESE 31 121 230 220 101 47 750 SE 33 120 240 325 160 40 918 SSE 23 135 285 385 281 54 1163 S 24 113 244 411 251 46 1089 SSW 18 148 259 425 318 103 1271 SW 25 128 233 321 191 40 938 WSW 29 117 200 205 116 22 689 W 20 107 194 196 113 24 654 WNW 30 108 301 419 232 93 1183 NW 22 97 331 709 527 173 1859 NNW 29 110 346 695 608 257 2045 VAR 0 0 0 0 0 0 0 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 2 Page 20 of 20 Table 16 Monticello Nuclear Generating Plant Site Meteorology - All Classes Combined Elevation 100 Meters (cont'd)

Frequency Distribution Tables, Hours at each Wind Speed and Direction Period of record: 9-1-76 through 8-31-78 Data Recovery for the Period Total Hours: 17520 Hours of Calm: 201 Hours of Bad Data: 961 Percent Data Recovery: 94.51 Percent Acceptable Observations in each Stability Class Class A 2.95 Class B 3.64 Class C 6.29 Class D 43.87 Class E 26.77 Class F 11.03 Class G 5.46 Average Wind Speed for each Wind Category 1 to 3 MPH 2.5 4 to 7 MPH 5.8 8 to 12 MPH 10.1 13 to 18 MPH 15.4 19 to 24 MPH 20.9 Above 24 MPH 28.1 M/arb

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-C TITLE: APPENDIX C Revision 0 Page 1 of 5 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD O F REVISIO N ............................................... 2 Table 1 Parameters for Cow and Goat Milk Pathways .......................... 3 Table 2 Parameters for the Cow Meat Pathway ............................... 4 Table 3 Parameters for the Vegetable Pathway ................................ 5 Prepared By:

Reviewed By:

OC Final Review Meeting: Date:

Approved By Plant Manager: Date:

3087 (DOCUMENT CHANGE, HOLD, AND COMMENT FORM) incorporated:

Resp Supv: CHEM Assoc Ref CHEM-I SR: N Freq: 2 yrs ARMS: ODCM-APP-C Doc Type: 7030 Admin Initials: Date:

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-C TITLE: APPENDIX C Revision 0 Page 2 of 5 1.0 RECORD OF REVISION Revision No. Date Reason for Revision 0 October - 2000 Moved previous ODCM-10.01 tables of parameters to this document.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-C TITLE: APPENDIX C Revision 0 Page 3 of 5 Table 1 Parameters for Cow and Goat Milk Pathways Reference in Parameter Value Reg. Guide 1.109 Rev. 1 50 (cow)

Table E-3 QF (kg/day) 50 (cow) 6 (goat) Table E-3 tf (seconds) 1.73 X 105 (2 days) Table E-15 r 1.0 (radioiodines) Table E-15 0.2 (particulates) Table E-15 (DFLi)a (mrem/pCi) Each radionuclide Table E-11 to E-14 Fm (pCi/day per pCi/liter) Each stable element Table E-1 (cow)

Table E-2 (goat) tb (seconds) 4.73 X 108 (15 yr) Table E-15 Ys(kg/m 2 ) 2.0 Table E-15 Yp (kg/m2)

.75 Table E-15 th (seconds) 7.78 X 106 (90 days) Table E-15 Uap (liters/yr) 330 infant Table E-5 330 child Table E-5 400 teen Table E-5 310 adult Table E-5 tep (seconds) 2.59 X 106 (pasture) Table E-15 tes (seconds) 5.18 X 106 (stored feed) Table E-15 Biv (pCi/kg (wet weight) Each stable element Table E-1 per pCi/kg (dry soil))

P (kg dry soil/m 2 ) 240 Table E-15 I/plr

I1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-C TITLE: APPENDIX C Revision 0 Page 4 of 5 Table 2 Parameters for the Cow Meat Pathway Reference in Parameter Value Reg. Guide 1.109 Rev. 1 1.0 (radioiodines) r 1.0 (radioiodines) Table E-15 0.2 (particulates) Table E-15 Ff (pCi/kg per pCi/day) Each stable element Table E-1 Uap (kg/yr) 0 infant Table E-5 41 child Table E-5 65 teen Table E-5 110 adult Table E-5 (DFLi)a (mrem/pCi) Each radionuclide Table E-11 to E-14 Yp (kg/m 2 ) 0.7 Table E-15 Ys(kg/m 2 ) 2.0 Table E-15 tb (seconds) 4.73 X 108 (15 yr) Table E-15 ts (seconds) 1.73 X 106 (20 days) Table E-15 th (seconds) 7.78 X 106 (90 days) Table E-15 tep (seconds) 2.59 X 106 (pasture) Table E-15 tes (seconds) 5.18 X 106 (stored feed) Table E-15 QF (kg/day) 50 Table E-3 Biv (pCi/kg (wet weight) Each stable element Table E-1 per pCi/kg (dry soil))

P (kg dry soil/m 2 ) 240 Table E-15 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-C TITLE: APPENDIX C Revision 0 Page 5 of 5 Table 3 Parameters for the Vegetable Pathway Reference in Parameter Value Reg. Guide 1.109 Rev. 1 r (dimensionless) 1.0 (radioiodines) Table E-1 0.2 (particulates) Table E-1 (DFLi)a (mrem/Ci) Each radionuclide Tables E-11 to E-14 ULa (kg/yr) 0 Infant Table E-5 26 Child Table E-5 42 Teen Table E-5 64 Adult Table E-5 USa (kg/yr) 0 Infant Table E-5 520 Child Table E-5 630 Teen Table E-5 520 Adult Table E-5 tL (seconds) 8.6 X 104 (1 day) Table E-15 th (seconds) 5.18 X 106 (60 days) Table E-15 Yv (kg/m2) 2.0 Table E-15 te (seconds) 5.18 X 106 (60 days) Table E-15 tb (seconds) 4.73 X 108 (15 yr) Table E-15 P (kg/(dry soil)/m2) 240 Table E-15 Biv (pCi/kg(wet weight) Each stable element Table E-1 per pCi/kg (dry soil))

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-HISTORY TITLE: ODCM HISTORY Revision 0 Pag 1If RECORD OF REVISION Revision No. Date Reason for Revision 0 May 2, 1979 Original.

1 February 29, 1980 Incorporation of NRC Staff comments and correction of miscellaneous errors.

2 July 23, 1982 Incorporation of NRC Staff comments, addition of short term vent dispersion parameters, and addition of Appendices D and E.

3 March 24, 1983 Change in milk sampling location.

4 Decerpber 12, 1983 Change in milk sampling locations and remove formula for converting gCi/sec to mrad/hr for stack and vent wide range gas monitors.

5 March 27, 1984 Change Table 3.2-1 6 January - 1988 Incorporation of MIDAS and complete retyping.

7 January - 1990 Incorporation of NRC staff comments, correction of miscellaneous errors, clarification of term abnormal release and addition of references to MNGP ODCM computer program.

0 November - 1993 Complete rewrite of ODCM creating modular format allowing changes of a section rather than the whole document.

"Record of Revision" is now incorporated into each individual procedure.

Prepared By:

Reviewed By:

OC Final Review Meeting: Date:

Approved By Plant Manager: Date:

F*,RGAMINIS1TRPTI E E N I+/-Y i 3087 (DOCUMENT CHANGE, HOLD, AND COMMENT FORM) incorporated:

Resp up CHEM [Assoc Ref: CHEM-I ISR: N Freq: 2 yrs ARMS ODcM-HISTORY Doc Type: 7030 Admin Initials: Date:

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ML13135A013

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SUMMARY

SUMMARY

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