Text

Off-Site Dose Calculation Manual
	ML071360179
Person / Time
Site:	Monticello
Issue date:	05/08/2007
From:	; Nuclear Management Co
To:	; Office of Nuclear Reactor Regulation
References
	FOIA/PA-2010-0209, L-MT-07-032
	Download: ML071360179 (270)
	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-01.01 Introduction 4 ODCM-02.01 Liquid Effluents 6 ODCM-03.01 Gaseous Effluents 9 ODCM-04.01 Liquid Effluent Calculations 2 ODCM-05.01 Gaseous Effluent Calculations 5 ODCM-06.01 Dose From All Uranium Fuel Cycle Sources 2 ODCM-07.01 Radiological Environmental Monitoring Program 10 ODCM-08.01 Reporting Requirements 4 ODCM-APP-A Appendix A 0 ODCM-APP-B Appendix B 1 ODCM-APP-C Appendix C 0 ODCM-HISTORY ODCM History 0 268 Pages Follow

ý 0, MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 4 Page 1 of 9 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD OF REVISION ............................................... 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 .......................... 4 2.3 Definitions ...................................................... 5 2.4 Radiological Effluent Controls And Surveillance Requirement ......... 9 Prepared By:

Reviewed By:

OC Final Review Meeting: Date:

Approved By Plant Manager: Date:

I FOR ADMINISTRATIVE USE ONLY 13087 (DOCUMENT CHANGE, HOLD, AND COMMENT FORM) incorporated:

IResp Supv: CHEM lAssoc Ref: CHEM-I ISR: N Freq: 2 yrs IARMS: ODCM-01.01 IDocType: 7030 1Admin Initials: Date:

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 4 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 Technical Specifications. This includes dual step annotation.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 TITLE: INTRODUCTION Revision 4 1Page 3 of 9 GENERAL NOTE: This procedure includes Improved Technical Specifications ([ITS])

information that is NOT applicable to Current Technical Specifications ([CTS]) and [CTS] information that will change when

[ITS] is implemented. The [ITS] information SHALL NOT be used prior to the [ITS] effective date. On and after the [ITS] effective date, the [ITS] information SHALL be used in lieu of the corresponding

[CTS] information.

2.0 OFF-SITE DOSE CALCULATION MANUAL (ODCM) INTRODUCTION 2.1 ODCM Description and Control 2.1.1 [CTS] In accordance with T.S.6.8.A.1, 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.

[ITS] 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 [CTS] In accordance with T.S.6.8.A.2, 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.

[ITS] 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-01.01 Page 4 of 9 2.2 Licensee Initiated Changes to the ODCM 2.2.1 [CTS] In accordance with T.S.6.8.A.3, licensee changes to the ODCM SHALL be documented and records of reviews 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, and 10CFR50, Appendix I, and not adversely impact the accuracy or reliability of effluent, dose, or setpoint calculations.

2.2.2 [ITS] In accordance with Tech Spec 5.5.1 .c., licensee initiated changes to the 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, and 10CFR50, Appendix I, and not adversely impact the accuracy or reliability of effluent, dose, or setpoint calculations.

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

2.2.4 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 4 Page 5 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 4 Page 6 of 9 2.3.8 Dose Equivalent 1-131 DOSE EQUIVALENT 1-131 SHALL be that concentration of 1-131

(ýtCi/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-1 4844, "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 4 Page 7 of 9 2.3.13 Members Of The Public MEMBERS 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 4 Page 8 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 4 Page 9 of 9 2.4 Radiological Effluent Controls And Surveillance Requirement 2.4.1 Controls A. Compliance with the controls contained within the succeeding text 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. Ifthe Control is restored prior to expiration of the specified time interval, completion of the ACTION requirements is not required.

C. 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.

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 6 1Page 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 .................................................. 3 2 .1 C oncentration .................................................. 3 2 .2 Do se ................ .......................................... 4 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 Requirem ents .................................................. 11 Table 2 Radioactive Liquid Waste Sampling And Analysis Program ........... 12 Table 3 Radioactive Liquid Effluent Monitoring Instrumentation ............... 15 Approval: Kevin Jepson (pcr 01013579) 1 I/Icc

MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 6 Page 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 6 Page 3 of 16 GENERAL NOTE: This procedure includes Improved Technical Specifications ([ITS])

information that is NOT applicable to Current Technical Specifications ([CTS]) and [CTS] information that will change when

[ITS] is implemented. The [ITS] information SHALL NOT be used prior to the [ITS] effective date. On and after the [ITS] effective date, the [ITS] information SHALL be used in lieu of the corresponding

[CTS] information.

2.0 LIQUID EFFLUENTS 2.1 Concentration 2.1.1 Controls A. [CTS] In accordance with T.S.6.8.D.2, 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.

[ITS] 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 [iCi/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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 6 Page 4 of 16 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.

2.2 Dose 2.2.1 Controls A. [CTS] In accordance with T.S.6.8.D.4, the dose or dose commitment to a MEMBER OF THE PUBLIC from radioactive materials in liquid effluents released from the site SHALL be limited:

[ITS] 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 material in liquid effluents released from the site SHALL be limited to the following values:

1. During any calendar quarter to :5 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 JAW 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 6 Page 5 of 16 2.3 Liquid Radwaste Treatment Systems 2.3.1 Controls A. [CTS] In accordance with T.S.6.8.D.6, 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.

[ITS] 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.

2.3.3 Action A. With radioactive liquid waste being discharged without treatment and in excess of the above limits, document and report lAW ODCM-01.01, Section 2.4.1.C.

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

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 6 Page 6 of 16 2.4 Liquid Holdup Tanks 2.4.1 Controls A. [CTS] In accordance with T.S.6.8.1.3, the quantity of radioactive material contained in each outside temporary tank SHALL be limited to *<10 curies, excluding tritium and dissolved or entrained gases.

[ITS] In accordance with Tech Spec 5.5.7.c and TRM 5.5.1, 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 6 1Page 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).

B. Dose Control 2.2.1 .A. is provided to implement the requirements of Sections 11.A, II.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.

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 I/Icc

MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 6 1Page 8 of 16 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 1, Revision 1," April 1977. NUREG-0133, October 1978 provides methods for dose calculations consistent with Regulatory Guides 1.109 and 1.113.

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 10CFR Part 50 and design objective Section II.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.

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 6 Page 9 of 16 Surveillance requirements for continuous liquid release points are not provided since all Monticello releases are "batch" type releases.

Radioactive liquid effluent 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 setpoints for these instruments will be calculated in accordance with NRC approved methods in the ODCM to ensure that the alarm will occur prior to exceeding the limits of 10CFR20. The operability requirements for instrumentation are 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 6 1Page 10 of 16 Figure 1 Monticello Nuclear Generating Plant Site Boundary for Liquid Effluents f

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-02.01 TITLE: LIQUID EFFLUENTS Revision 6 Page 16 of 16 Table 3 Radioactive Liquid Effluent Monitoring Instrumentation (cont'd)

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 1Page 1 of 20 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD O F REVISIO N ............................................... 2 2.0 GASEOUS EFFLUENTS ............................................... 4 2 .1 D ose R ate ...................................................... 4 2.2 Dose - Noble G ases ............................................. 6 2.3 Dose - Iodine-131, Iodine-133, Tritium and Particulates .............. 7 2.4 Off-gas Treatment System ........................................ 8 2.5 Main Condenser Off-Gas Activity .................................. 9 2.6 Containment Venting and Purging ................................. 11 2 .7 Ba se s .................. ....................................... 12 Figure 1 Monticello Nuclear Generating Plant Site Boundary for Gaseous Effluents 15 Table 1 Radioactive Gaseous Effluent Monitoring Instrumentation Surveillance Req uirem e nts ..................................................... 16 Table 2 Radioactive Gaseous Waste Sampling and Analysis Program ............ 17 Table 3 Radioactive Gaseous Effluent Monitoring Instrumentation ............... 19 IApproval: PCR 01073724 I/cah

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 1Page 2 of 20 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 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.

I/cah

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 1 Page 3 of 20 Revision No. Date Reason for Revision September - 2002 Revised Actions 2.2.3 and 2.3.3 to standardize documentation and reporting.

Revised action in Table 3 to make inoperable 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 inoperable hydrogen monitors similar to other inoperable monitors in Table 3.

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).

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.

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 7. Revision bars from revision 7 are maintained for review purposes.

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.

I/cah

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 Page 4 of 20 GENERAL NOTE: This procedure includes Improved Technical Specifications ([ITS])

information that is NOT applicable to Current Technical Specifications ([CTS]) and [CTS] information that will change when

[ITS] is implemented. The [ITS] information SHALL NOT be used prior to the [ITS] effective date. On and after the [ITS] effective date, the [ITS] information SHALL be used in lieu of the corresponding

[CTS] information.

2.0 GASEOUS EFFLUENTS 2.1 Dose Rate 2.1.1 Controls A. [CTS] In accordance with T.S.6.8.D.7, the dose rate due to radioactive materials released in gaseous effluents from the site (Figure 1) SHALL be limited to the following:

[ITS] In accordance with Tech Spec 5.5.3.a, 5.5.3.c, and 5.5.3.g, the dose rate 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 lodine-131, Iodine-1 33, 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.

I/cah

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 Page 5 of 20 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-1 31, Iodine-1 33, 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 Page 6 of 20 2.2 Dose - Noble Gases 2.2.1 Controls A. [CTS] In accordance with T.S.6.8.D.8, the air dose due to noble gases released in gaseous effluents from the site (Figure 1)

SHALL be limited to the following values:

[ITS] 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 9 Page 7 of 20 2.3 Dose - Iodine-131, Iodine-133, Tritium and Particulates 2.3.1 Controls A. [CTS] In accordance with T.S.6.8.D.9, the dose to any organ of an individual due to Iodine-131, Iodine-133, 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:

[ITS] 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-131, 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-131, Iodine-133, Tritium, and Radioactive Particulates with half-lives greater than 8 days in gaseous effluents SHALL be determined in accordance with the ODCM monthly.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 Page 8 of 20 2.4 Off-gas Treatment System 2.4.1 Controls A. [CTS] In accordance with T.S.6.8.D.6, 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:

[ITS] 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 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.

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

B. [CTS] 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-133).

[ITS] 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-133).

C. [CTS] The concentration of hydrogen in the compressed storage subsystem SHALL be limited to *5 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.

[ITS] 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 Page 9 of 20 D. The hydrogen monitors SHALL be operable 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 , document and report lAW ODCM-01.01, Section 2.4.1.C.

2.4.4 Surveillance Requirements A. [CTS] Following each isotopic analysis of a sample of gases from the Main Condenser Off-gas System Pretreatment monitor station required by Tech Spec 3.8.A, verify that the maximum storage tank activity limit specified in 2.4.1 .B. cannot be exceeded using the method in the ODCM.

[ITS] 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.

2.5 Main Condenser Off-Gas Activity 2.5.1 Controls A. [CTS] In accordance with T.S.3.8.A.1, 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 _<2.6 x 105 gCi/sec after a decay of 30 minutes.

[ITS] 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 Page 10 of 20 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 9 Page 11 of 20 2.6 Containment Venting and Purging 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 OPERABILITY 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 TITLE: GASEOUS EFFLUENTS Revision 9 Page 12 of 20 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 II.B, 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 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 I/cah

MONTICELLO.NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 1Page 13 of 20 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 IL.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 1I.B and IL.C of Appendix I, 10CFR 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 Restricted Area 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 9 1Page 14 of 20 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 OPERABILITY 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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I MONTICELLO NUCLEAR GENERATING PLANT I ODCM-03.O1 TITLE: GASEOUS EFFLUENTS I Revision 9 I Page 15 of 20 Figure 1 Monticello Nuclear Generating Plant Site Boundary for Gaseous Effluents t - -7' ./

SIle I ',

'4' I o ; ,.o //

",J

/ i -'J

/r*

/_

~~1

/

1

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 1Page 16 of 20 Table 1 Radioactive Gaseous Effluent Monitoring Instrumentation Surveillance Requirements 0- 0- 0)

Cu CD Co 0Co CD C- 0) C1 .C C-C C 0 C

(. 0 CC=

VD C) 0 0 Cu WC0 0 O._

t-CD t- O a)

_r_ O t-0 a) 0 Coa) _- a 0 U) -.

0 0 (C CC L- CC 0 00 (C Co 00C) 0)4 00C) 0(C- a)4 (- 00 tCo O) CDC OO OO 00 C)-- O)C C)- .0LL 0O5 OO5 C) a 00 0~

C 0UC 0 -

on c c ,

CD E

"- 0 M V U-0(

-t(D --

E ta) ta) 0 (C C Cu Cu 0 :

C0a)-

oCC og 0D a) o*)U C) 0 ."

U.. c . 00

.0 4? z C c aU)0 C)V D 0 0 ci- *->

(nC)

C) ~CU o0 - " t-0C)oC c c" "0 -0 a)c E 9

'r-" 0' r

E3M)-.-U3c 0)LL Cua M Q)~ (3 Fu (D t CuC Cu Cu ~C) 2) 0 FU~i'o @0 0 0 0 0

- 0( U) a)

.0 ": 0) 0 0 U) H:0~'

(n 0 c 0 -C:

cO cU) c CL C) . 0 a) Co 00 E 80 c >-,0 (CU VE 0

E - 0 Co-CoU) cc Ca C).9 0 Cu U- U)- 0C0C -~U) o0.o_ 0)

0) t1:a mi_

cCU cc_ O 0C 0D -00 (C/ coo a) g.- E C (D 0a) 0E (Da) a) a)

OfE 0 (CC)E M y-0Cu.'0 0):ý a)(D CU0 0_z

-C_

2z a-z (CU m E)

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 1Page 17 of 20 Table 2 Radioactive Gaseous Waste Sampling and Analysis Program O.-0 o oto

- )6 ( 0 x x x x x x x x x x

E E E E E E EU 0 M- Z 2 +/- E-cu-`

2p)

L U :Li- (A D En U) (n ) 0DU E, - 0 0- 0 0U

._E *0) E U 2. U) :!: oU)

"" ) oL E - M a

,LL o :E ) ) W n' c Vn,"

(IU 0U 0) 0D U 0) a) CDL CL U) 0)U) U) 0)Q .c0)E E :

0 0 3 :

0 0 0 OA' U~) :E U) c c c L c oE T3RW._r_ 0 -

CU) CU co-* _ t-o 0

75o 0 0 0 0 0) a- CU~

a) C cU)M -) .0 M~1(D - L.)

(DZ

___ 0 C__-ta)_

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 Page 18 of 20 Table 2 Radioactive Gaseous Waste Sampling and Analysis Program (cont'd)

E a,

if~C6 Cu -cc 7 a cc -E o 0 C-o Co 0

.C cc - C0C (D CC 0L z -T .__ _(L- uO o C.U CL -~ CU 0 >

.0) o* E 0) a, a,

-0 CU (D CU .L OD ý C, 0. -Z V 0_ .C OCU e-*,C ** r.. 0 4- CD mor LL -- -'--

C. >4CU) ,'

(D 0 a~) if a)a 75 0 -o C (Da) (D

- - Co 0 0 a C-. *

, cu>,

E Co 0

a,-.2 aC) =,- -s C O a, M 0 a,)

a). Cn

-0 -,

cuU -- E CU-. Cr- .C.C -

0) a, 0.

S-0 "0 m E a,( V CUa

~-

U) F--*- Cu 0C C - 0=

C

-04 0) I..._0 o. ( c- o IC 0=' E c-0 0l)

CT-- -' 3 0M , O.--, (n

- C 0 CU - a 0 Cu . o

=o 0) 0O) Cc 0) 0. a, Cu E2c C CDV .O- a,O- C- i 0 0. " VUV

= U)

Cu

-. 0"0 4---- Cu 0. ,, ,9.o._ r- U.)

0. . co M, ) 0~ CL

-OZ E, 0 'Cc CuC$ - C Q-." C Oa CL EC aao Cu 00 a, 0>--.

CT- r C E.O 50 Co

-1 o_>,

U) -)o a Cu CU Cu 0 U r- C

-a, 6u E C- 0aa, 0 CD C-Co 0 M~.0 0 ca CO ., E = - - co0> a). CU~ a,"

002 0 q -E 0)

C -~ Co a, -j '- .oa, a)_- a- C Cu ~a, C UCa, 2- S> - IKaN'-2 wE a,-6 Ul)

.0 "-0* > UJ 0* -- 0E>,

mcu E C0.S M- C (A" U)

- 0- 'a*- 0 -* 0 S00 U)0 D.C C') a, U ..(n C '00 U) 0)

C* 0O . *C --aD 00 -0 a)t (D C M( E::(D

>0) Cu ~

O Cu -a, (C a -0:5 L) W O5 - 0 0"

T) C C.- a, .,1.

CnE2E 0 Co -(D a) 0.2 CU M

a, (D7.-

O- Cu0 a W* (n o L) M - 0 a, 0 ai C 0 (n Cu 0 M )a Cu 0C 0o V0 0.- a) (D Cua C 0-0 U) O Cu) C.) a) M a, a) ~CY) a, a-a, .-O J - --

0) E0 0~ 0 - w '- 0~ o r- ý o (D 0 ,--a a, a) 0 - It)

EP - Cu- -0~ u a co = - C) 0 -

Cu4-0 C ,l ,> E )Wa0 N o2

a, Cu Cn004 0

.- Ml >CC 0 -0 M

-C3 C.- (n C.c (D* if .oc U) a,0 OU) a, 4-- 0 X<a -o U)

Cu 5% 2,/ a ,- Cu "4 E If 0 ) a) Cn C' 0 a) 0 > :C .C5 21 a af Ca, O- a, C DC) CO - a,*

a 0.

00 0,a

-a (n -J >U) V o) a, a, CL ý a) Cu Cc Cu~

'c6 Cut) ;-a, Cu C (D E 0 U)

CUC/ a)

-CCu o -u E, (9 -~ 0 0 0 Cu - CuC Cor o if)

Cra)4 Cu0CuD. aU)

(Da,C-C C a) a) C 'a a)U)

ZZn

. ur) Cl) F0) 014) 0 6 -6 3 -6 Qi I/cah

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 Page 19 of 20 Table 3 Radioactive Gaseous Effluent Monitoring Instrumentation 0

E (D2 0 ý5 E

--SE CEt-20 0E c, _ - 0 0 o 1_

t-0 E(1 D cc * -, . Vcie- .. 0,v .- c_._t-.L a_ o0o0

3 CU)

CO e--.* >.

0~ 0 (CL 0- =

E2)* ot-c.2 o ^,

ICCe- o 0)(D2~f 0 ,00* 2 M 0 -"o) 0 vi'-E E n _ 0 0- CUiEnW1 4 O 0 0 --

(A t-V00)0- a- 0E 0--L uC..C 0 i cL "--

C: L- == V CL CI) >~ V zC: C.-I(1 CI) r_CU Ci)

>1ciU C.C Of V o-_*o8 U E

~~ E. Z 0 -u M-`Z. E.*

E E0E o- 0-o5 E O c wC)C)--

(c o* 0 V V)

2 >0 E" 0c (- 0 CI - ) 0* C - 0- *C '.I oICI (n) 0 MN N 0 0)CI)

C

.A OC C C - D__

CU I0 0 c 0 LL -0 =% 0 --,__ _u 0 e-CL o o C. .0o E E pi6 0)_ -

0 -

0~

Et-ai)

o- 0 CUi 0 0) z CL) a) >,

E ig 00 0<

E (12* CC CD

~(1 MO C

=)

V: M V 01)0 E 0:(D7.o 0) 0 0~ a) (D C- (IL cci0 I/cah

MONTICELLO NUCLEAR GENERATING PLANT ODCM-03.01 TITLE: GASEOUS EFFLUENTS Revision 9 Page 20 of 20 Table 3 Radioactive Gaseous Effluent Monitoring Instrumentation (cond't) 0)

CU U) C 0. 0.

50. -a -

ai)CD cu, CU) _Ec CU) C 0 .-

0.~- 0o 0 ID-r=3

.1 U)

0. E'*

0 0-0Cu cicc cc,

3O. ci) 0 ,

0.= .C:0 C'4' CU) CU)- 0. CL 0 >, 0) Cu rC -o 0* 0* 0 Cu C -t. C CU E CU)c:

C O C>, Cu M= i En.-

(nON E :E~ E: >g

-- 00 C0 0 .

Co U c -* .£ V-C C d- Cu)

-o co)3 0) >, 00 U) a)'- 0 Co4- U)t- > 70 cu~ Cu E a- >, i Cu W ce 2 >ý E V0)

-_0. V oi - >',O 0 E -0 a)

-,0

-0

Q-O a)

-E -c)

(n " 3 Ci. -, 0 i >: CUCU U) > c CD, .- Ci a) I--- C 0~u U)>, C a) D C: >,0 ai) CU.

Cn -a.--

U2c) a) C: M0Cu .cc ": a) C U C) CCU, -,O 0 0 D C) U Cu) °U

.) Cu 7)

0) ci0C A? Cu, E

a))

Cu-C.)

U)

._ E U) U) U) U) U) U)

- ~ ~ a) aI) (D) a)

E E E E E E E E

cui CUi W Co Cu cc Co 0)

C, .o 0)Q A = "0 Ec 0) z20 Q) 0~ E .2 C E~ 0 Ul) (D )

U) 0 z 0 (

0) E E C 0 E Cu C 0

2 ... . *-z a) 0 U)_.- C--

0~ E 0 0 0

(DE

>D_

C -.- Do >o

-Cn, OIU 0 -iE Cz E LU) -0) cc M U-E0 CUci CE U- M U) 00r Co 0- LL 0_0-CD 0*

p - a a. a a. a a a I/cah

I MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 1Page 1 of 20 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECORD OF REVISION ............................................... 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 Ci/m l) ............................................ 18 Prepared By:

Reviewed By:

OC Final Review Meeting: Date:

Approved By Plant Manager: Date:

r FOR ADMINISTRATIVE USE ONLY 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 IAdmin Initials: Date:

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Page 2 of 20 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 1Page 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 100FR20; 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. I 2.1 Monitor Alarm Setpoint Determination Monitor alarm setpoints are determined to assure compliance with Tech Specs.

The setpoints indicate ifthe 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/ml 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 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 liquid effluent comprised by radionuclide i) for each individual radionuclide in the liquid effluent.

Si A 2.1-1 Y_. Ai2.-

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 (giCi/ml).

Ct =F 2.1-2 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. =C 2.1-4 E

where E = The detection efficiency of the monitor (giCi/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 if there have been no liquid releases.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 1Page 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 YT AiAi2.- 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 (gCi/ml).

Cd 1 Cd 2.1-6 MPC, where MPCi = The liquid effluent radioactivity concentration limit for radionuclide i (pCi/ml) from Table 1.

C. Determine Cm, the maximum acceptable total radioactivity concentration of the radionuclides (minus tritium) released into the discharge canal (pCi/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 kbackground attributed to the radionuclides (ncps).

C.R. =C 2.1-8 E

where E = The detection efficiency of the monitor (gCi/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 A 2.1-9 Ei 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).

Ct = 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. CM 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.

i YSiA A- 2.1-13 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

= 12.1-14 i MPCi MPCi = The liquid effluent radioactivity concentration limit for radionuclide i (jiCi/ml) from Table 1.

C. Determine Cm, the maximum acceptable total radioactivity concentration of the radionuclides (minus tritium) in the TB NWS prior to dilution (gCi/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. =C 2.1-16 E

where E The detection efficiency of the monitor (jiCi/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 1Page 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 the batch release prior to dilution flow to obtain the concentration at the unrestricted area. This calculation is shown in the following equation:

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

Ci concentration of radionuclide i in the potential batch release, (pCi/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.

Conci < 1 2.2-2 iMPCi where MPCi = maximum concentration of radionuclide i from Table 1, (pCi/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= XAijtkCikFk 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, (gCi/ml);

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 1Page 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 gCi/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 A.- was calculated for an adult for each isotope using the following equalion:

Aij = 1.14 x 105 (730/Dw + 21BFi) DFij 2.3-3 where 1.14 x 105 = 106pCi 10 3mI LYr gCi 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 diution 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-0133, 1978, NTIS, Springfield, VA.

5. USNRC, 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", 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 1Page 16 of 20 Figure 1 Radwaste Clean, Dirty, Solid Waste t ~

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-04.01 TITLE: LIQUID EFFLUENT CALCULATIONS Revision 2 Pag 17of2 Table 1 Liquid Source Terms Radioactivity Ai MPCQ Radionuclide Ci/yr* iiCi/mi**

H-3 2.1E 1 1 E-2 Na-24 1.7E-1 5E-4 Mn-54 2.6E-3 3E-4 Mn-56 2.7E-1 7E-4 Fe-59 8.1 E-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 5.0E-2 2E-4 1-131 1.3E-1 1E-5 1-132 1.3E-1 1E-3 1-133 4.OE-1 7E-5 1-134 6.4E-2 4E-3 1-135 2.5E-1 3E-4 Cs-134 8.3E-2 9E-6 Cs-1 36 2.6E-2 6E-5 Cs-1 37 1.2E-1 1E-5 Cs-138 1.5E-1 4E-3 Ba-1 40 1.1E-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 RiCi/ml)

Nuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI 1 H-3 0.OOE 00 1.47E 00 1.47E 00 1.47E 00 1.47E 00 1.47E 00 1.47E 00 6C14 3.13E 04 6.26E 03 6.26E 03 6.26E 03 6.26E 03 6.26E 03 6.26E 03 11 Na-24 4.27E 02 4.27E 02 4.27E 02 4.27E 02 4.27E 02 4.27E 02 4.27E 02 24 Cr-51 0.OOE 00 0.OOE 00 1.31E 00 7.80E 01 2.38E 01 1.73E 00 3.28E 02 25 Mn-54 0.OOE 00 4.43E 02 8.45E 02 0.O0E 00 1.32E 03 0.OOE 00 1.36E 04 25 Mn-56 0.OOE 00 1.11E 02 1.98E 01 0.00QE 00 1.42E 02 0.OOE 00 3.56E 03 26 Fe-55 6.91E 02 4.77E 02 1.11E 02 0.OOE 00 0.OOE 00 2.66E 02 2.74E 02 26 Fe-59 1.09E 03 2.56E 03 9.83E 02 0.OOE 00 0.OOE 00 7.16E 02 8.54E 03 27 Co-58 0.OOE 00 9.80E 01 2.20E 02 0.OOE 00 0.OOE 00 0.OOE 00 1.99E 03 27 Co-60 0.OOE 00 2.82E 02 6.21 E 02 0.OOE 00 0.OOE 00 0.OOE 00 5.29E 03 28 Ni-63 3.27E 04 2.26E 03 1.10E 03 0.OOE 00 0.OOE 00 0.OOE 00 4.72E 02 28 Ni-65 1.33E 02 1.72E 01 7.87E 00 0.OOE 00 0.OOE 00 0.OOE 00 4.37E 02 29Cu-64 0.OOE 00 1.10E 01 5.15E 00 0.OOE 00 2.76E 01 0.OOE 00 9.34E 02 30 Zn-65 2.32E 04 7.39E 04 3.34E 04 0.O0E 00 4.94E 04 0.OOE 00 4.66E 04 30 Zn-69 4.94E 01 9.46E 01 6.58E 00 0.OOE 00 6.14E 01 0.OOE 00 1.42E 01 35 Br-83 0.OOE 00 0.OOE 00 4.09E 01 0.OOE 00 0.OOE 00 0.OOE 00 5.89E 01 35 Br-84 0.OOE 00 0.OOE 00 5.30E 01 0.OOE 00 0.OOE 00 0.OOE 00 4.16E-04 35 Br-85 0.OOE 00 0.OOE 00 2.18E 00 0.OOE 00 0.OOE 00 0.OOE 00 1.02E-1 5 37 Rb-86 0.OOE 00 1.01 E 05 4.72E 04 0.OOE 00 0.OOE 00 0.OOE 00 2.OOE 04 37 Rb-88 0.OOE 00 2.90E 02 1.54E 02 0.OOE 00 0.OOE 00 0.OOE 00 4.01 E-09 37 Rb-89 0.OOE 00 1.92E 02 1.35E 02 0.OOE 00 0.OOE 00 0.OOE 00 1.12E-11 38 Sr-89 2.58E 04 0.OOE 00 7.40E 02 0.00QE 00 0.OOE 00 0.OOE 00 4.14E 03 38 Sr-90 6.35E 05 0.OOE 00 1.56E 05 0.OOE 00 0.OOE 00 0.OOE 00 1.83E 04 38 Sr-91 4.75E 02 0.OOE 00 1.92E 01 0.OOE 00 0.OOE 00 0.OOE 00 2.26E 03 38 Sr-92 1.80E 02 0.OOE 00 7.78E 00 0.OOE 00 0.OOE 00 0.OOE 00 3.57E 03 I/pIr

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 giCi/ml) (cont'd)

Nuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI 39 Y-90 6.90E-01 0.OOE 00 1.35E-02 0.OOE 00 0.OOE 00 0.OOE 00 7.32E 03 39 Y-91m 6.52E-03 0.00E 00 2.53E-04 0.OOE 00 0.OOE 00 0.OOE 00 1.92E-02 39Y-91 1.01E 01 0.OOE 00 2.70E-01 0.OOE 00 0.OOE 00 0.00E 00 5.57E 03 39Y-92 6.06E-02 0.OOE 00 1.77E-03 0.OOE 00 0.OOE 00 0.0OE 00 1.06E 03 39Y-93 1.92E-01 0.OOE 00 5.311E-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 6.111E 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 1.51 E 06 42 Mo-99 0.OOE 00 1.54E 02 2.94E 01 0.OOE 00 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 1.211E-02 1.75E-02 1.72E-01 0.OOE 00 3.15E-01 8.94E-03 5.26E-14 44 Ru-1 03 6.63E 00 0.OOE 00 2.86E 00 0.OOE 00 2.53E 01 0.OOE 00 7.74E 02 44 Ru-1 05 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 52Te-127 1.07E 02 3.83E 01 2.311E 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 3.611E 01 1.07E 02 4.211E 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

EMONTICELLO 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 gCi/ml) (cont'd)

Nuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI 55Cs-134 2.99E 05 7.1OE 05 5.81E 05 0.00E 00 2.30E 05 7.63E 04 1.24E 04 55 Cs-1 36 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 56 Ba-1 41 1.01 E 00 7.64E-04 3.41 E-02 0.OOE 00 7.1 OE-04 4.34E 04 4.77E-1 0 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 57La-140 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 58 Ce-1 41 1.34E-01 9.04E-02 1.03E-02 0.OOE 00 4.20E-02 0.OOE 00 3.46E 02 58 Ce-1 43 2.36E-02 1.74E 01 1.93E-03 0.OOE 00 7.67E-03 0.OOE 00 6.51 E 02 58 Ce-1 44 6.97E 00 2.91 E 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 1.10E-04 0.OOE 00 5.06E-04 0.OOE 00 3.11E-14 60 Nd-1 47 4.51 E-01 5.22E-01 3.122E-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 93Np-239 4.26E-02 4.19E-03 2.311E-03 0.OOE 00 1.311E-02 0.OOE 00 8.60E 02 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 1 of 66 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 eferences ..................................................... 35 Figure 1 Gaseous Radwaste ............................................. 36 Figure 2 Ventilation System ............................................... 37 Table 1 Gaseous Source Terms(3) Ai, Ci/yr ................................ 38 Table 2 Dose Factors and Constants for the Total Body and Skin for Gaseous Radionuclides .................................................. 39 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 .......... 41 Table 4 Child Critical Organ Dose Parameters for Radionuclide i for the Inhalation P athw ay ....................................................... 44 Table 5 Dose Factors for Noble Gases and Daughters That May Be Detected in Gaseous Effl uents ............................................. 45 Table 6 Dose Parameters for Finite Evaluated Plumes for the Critical Boundary Location 0.51 mi from the Stack in the SSE Sector .................. 46 Table 7 Ri Values for the Monticello Nuclear Generating Plant Ground Pathway 47 Table 8 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Adult Age Group ........................................ 48 Table 9 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Teen Age Group ........................................ 49 Table 10 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Child Age Group ........................................ 50 Table 11 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway A dult A ge G roup ................................................ 51 Table 12 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway Teen A ge G roup ................................................ 52 Approval: PCR 01064105 I I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 2 of 66 SECTION PAGE Table 13 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway C hild A ge G roup ................................................ 53 Table 14 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Adult Age Group ........................................ 54 Table 15 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Teen Age Group ........................................ 55 Table 16 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Child Age Group ........................................ 56 Table 17 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Infant Age Group ....................................... 57 Table 18 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Adult Age Group ........................................ 58 Table 19 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Teen Age Group ........................................ 59 Table 20 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Child Age Group ........................................ 60 Table 21 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Infant Age Group ....................................... 61 Table 22 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Adult Age Group ........................................ 62 Table 23 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Teen Age Group ........................................ 63 Table 24 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Child Age Group ........................................ 64 Table 25 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Infant Age Group ....................................... 65 Table 26 Table of Radioisotope Constants Used by EBARR ................... 66 I/jlk

ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS MONTICELLO NUCLEAR GENERATING PLANT Revision 5 Page 3 of 66 II 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 "1 OCFR1 00" to I/jlk "10CFR50.67" as required by License Amendment 148 (Alternate Source Term). I

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 4 of 66 2.0 GASEOUS EFFLUENT CALCULATIONS 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 10CFR50.67. 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.

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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 5 of 66 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.

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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 6 of 66

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.

Ai i 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 (RCi/sec), based upon the whole body exposure limit (500 mrem/yr).

500 Qt = (X/QaX*Kisi 2.1-2 where (X/Q) = The highest calculated average relative V 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 1.6.07 (ATMOSPHERIC DISPERSION DETERMINATION).

Ki = The total whole body dose factor due to gamma emissions from noble gas radionuclide "i" (mrem/year/lxCi/m 3 ) from Table 2.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 7 of 66

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

3000 Qt = (x/Q)vi-,(Li + 1.1 Mi) Si 2.1-3 where Li + 1.1 Mi = the total skin dose factor due to emissions from noble3gas radionuclide "i" (mrem/year/gCi/m ) from Table 2.

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

NOTE: Use the lower of the Qt values obtained in Sections 2.1.1.A.2. and 2.1.1 .A.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 5 Page 8 of 66

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.

Ai Si Y_ Ai i 2.1-5 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 (giCi/sec), based upon the whole body exposure limit (500 mrem/yr).

500 Qt = .ViSi 2.1-6 NOTE: For short-term batch releases (equal to or less than 500 hrs/yr) 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 "i" accounting for the gamma radiation from the elevated finite plume (mrem/year/gCi/sec) from Table 2.

vi = The constant for short-term releases (equal to or less than 500hr/yr) for noble gas radionuclide "i" accounting for the gamma radiation from the elevated finite plume (mrem/yr/jiCi/sec) from Table 2.

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

3000 Qt = Y*, (Li (X/Q)s + 1.lBi) Si 2.1-7 I/jlk

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS IRevision 5 I Page 9 of 66 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 bi for Bi in Equation 2.1-7.

where Li(X/Q)s + 1.1Bi = 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/gCi/sec);

Li(X/q)s + 1. 1bi = 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/gCi/sec).

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

NOTE: Use the lower of the Qt values obtained in sections 2.1.1 .B.2. and 2.1.1 .B.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 I

directly to the environment without treatment. 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 QDCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 10 of 66 A. Maximum Release Rate Determine Qt, the maximum acceptable total release rate in giCi/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 gCi/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 (LCi/cc).

Ct = 2.12 E-03 QLt 2.1-9 f

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 (mRlhr).

C.R. Ct 2.1-10 E

where E The detection efficiency of the monitor for noble gas radionuclides represented in main condenser offgas (RCi/cc/mR/hr) from Plant Chemistry Surveillance procedures.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 11 of 66 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 gross 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 (gCi/sec) and divided by the maximum permitted air ejector release rate of 260,000 gCi/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 5 Page 12 of 66 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 unrestricted 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.

XP [X/Qv) Qiv + (X/Qs) Qis] < 1500 mrem/yr 2.2-1 where P child critical organ dose parameter for radionuclide i for the inhalation pathway, mrem/yr per gCi/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/m3 (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 5 IPage 13 of 66 Qiv = the release rate of radionuclide i from the Reactor Building vent for the week of interest, jiCi/sec; Qis = the release rate of radionuclide i from the offgas stack for the week of interest, gCi/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 Qiv 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 identified 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 Qis 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 - (Dcv + Dcs - Ddw) 2.2-2 where BL = limiting dose rate for the batch, mrem/yr; Dcv = previous week's dose rate from Reactor Building continuous and batch releases, mrem/yr; I/jilk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 14 of 66 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 to 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 5 Page 15 of 66 2.3 Gaseous Effluents - Compliance With 10CFR50 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:

D*,_ 5 mrad due to gamma radiation; and D*_ 10 mrad due to beta radiation; and B. for any calendar year:

Dy,_< 10 mrad due to gamma radiation; and D*< 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:

D, = 3.17 x 10-8 y (Mi[(X/Q) vQiv + (X/q)v qiv] + BiQis + biqis) i 2.3-1 I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 16 of 66 The historical meteorological data base is the basis for the method described in the original MNGP ODCM.

For beta radiation, the air dose is:

DI = 3.17 x 10-8 1Ni [(X/Q)vQiv + (x/q)vqiv + (x/Q)sQis + (x/q)sqis]

2.3-2 where Mi = The air dose factor due to gamma emission for each identified noble gas radionuclide i, mrad/yr per gCi/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/m 3 , (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 3

stack releases (greater than 500 hr/yr), sec/m (Appendix A, Table 6);

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

qi = 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), gtCi; 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), gCi; Qis = the total release of noble gas radionuclide i in gaseous releases for long-term offgas stack releases (greater than 500 hr/yr), gCi; I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 17 of 66 Qiv = the total release of noble gas radionuclide i in gaseous effluents for long-term Reactor Building vent releases (greater than 500 hr/yr), gCi; 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 RCi/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, iBi, 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 5 Page 18 of 66 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:

Daj < 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:

Daj = 3.17 X 10-8 ,-,_Riapj [WvQiv+Wvqiv + WsQis+Wsqis] 2.3-3 pi where Qis release of radionuclide i for long-term offgas stack releases (greater than 500 hr/yr), gCi; Qiv release of radionuclide i for long-term Reactor Building vent releases (greater than 500 hr/yr),

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

gCi; qiv = release of radionuclide i for short-term Reactor Building vent purge releases (equal to or less than 500 hr/yr); ptCi; Ws = the dispersion parameter for estimating the dose to an individual at the controlling location for long-term offgas stack releases (greater than 500 hr/yr), sec/m, or m-2; 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/m3 or m-2; I/ilk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 19 of 66 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/m 3 or m-2; 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/m or M-2 3.17 x 10-8 the inverse of the number of seconds in a year.

Riapi = the dose factor for each identified radionuclide i, pathway p, age group a, and organ j, m 2 mrem/yr per gCi/sec or mrem/yr per gCi/m 3 .

The above equation is applied to each combination of age group and organ. Values of Ria have been calculated using the methodology given in NUREG-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/m3) 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. Ifthese limits are exceeded, a Special Report will be submitted to the USNRC. Iftwice 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 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 20 of 66 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 5 Page 21 of 66 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 pCi/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(0) = Ai(tdly) ei t dly 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; i = 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 AI(0) through A6 (0) in the equation:

I Ai I I B2 B3 '

logIy-7I =log I B1 + + I 2.4-2 where Yi = 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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I MONTICELLO NUCLEAR GENERATING PLANT I ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS I Revision 5 IPage 22 of 66 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:

i =1,6 2.4-3

% Recoil = 100 X

, (BlYiyi + B2 yi Vki + B 3Yi) i 1,6 1_ B2Yivx-i i= 1,6

% Diffusion = 100 X 2.4-4 Z (B1yiXi + B2 Yi V'-i + B3 Yi) i= 1,6 B3yi i= 1,6

% Equilibrium = 100 X 2.4-5 I (Blyiki + B2YiJkj + B3Yi) i= 1,6 The release rate from the reactor vessel for the nine noble gases not measured is then:

2.4-6 Ai(0) = BlYiyX + B2 YiV/Xi+ B3yi 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 + Cc1XiAj(0) 2.4-8 ki - j (e -kit -e -kit ), for 1 = 1, 2, and 15 where oc0 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 5 Page 23 of 66 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 Floc = 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) + FjocAi (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 V4 2 = 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 5 Page 24 of 66 While a tank is being filled, offgas enters the tank at rate L. The activity of each isotope in the tank, Ci, is a function of time from the start of filling, tf, is computed by EBARR using.

Ci(tf) = Ai(tddly) (1 - e -ý'itf ) for i = 3 to 14 2.4-12 Xi and

[e -xitf-e -jtf + 1 -e -Xitf Ci(tf) = Ai(tddly) i eI

-xe ) + OciXiAJtddIy) ki ki- Xj 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:

p(tf) = tfL Pa 2.4

-14 Vtk where Vtk = volume of storage tank.

When the pressure in the tank reaches the design value, Pmax, at tfiil, EBARR assumes the tank is full. Total tank activity, C, and total tank Xe-1 33 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:

tfi = PmaxVtk 2.4-15 trel- +PaL treI = trill + tintk 2.4-16

-Xitintk Ci(trel) = Ci(tfill) e , for i = 3 through 14 2.4-17 and Ci(trel) = (Ci(tfill) e-Xitintk (e-Xitintk -e-kitintk ) for i = 1, 2, and 15

+ xcixi CA(tfih) 2.4-18 I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 25 of 66 C(trei) = Y- C (trel) 2.4-19 i= 1, 15 D(trej) = Y Ci(trel) Ki 2.4-20 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 tfill 2.4-22 I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 26 of 66 2.5 Dose Parameters for Radiolodines, 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 mediaand 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 always receive the maximum dose under the exposure conditions assumed.

A. Inhalation Pathway PiI = K' (BR) DFAi 2.5-1 where PI = dose parameter for radionuclide i for the inhalation pathway, mrem/yr per gCi/m 3 ;

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 5 Page 27 of 66 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 R4 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 Ri = K'(BR)a (DFAi)a 2.5-3 where RI = dose factor for each identified radionuclide i of the organ of interest, mrem/yr per pgCi/m 3 ;

K' = a constant of unit conversion,

= 106 pCi/gci; (BR)a = breathing rate of the receptor of age group a, m3/yr; (DFAi)a= organ inhalation dose factor for radionuclide i for the receptor of age group a, mrem/pCi.

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I1 I ODCM-05.01 I TITLE: GASEOUS EFFLUENT CALCULATIONS MONTICELLO NUCLEAR GENERATING PLANT Revision 5 P

IPage 28 of 66 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 liK'K"(SF)DFGi (1-e -Xt ) 2.5-4 where dose factor for the ground plane pathway for each identified radionuclide i for the organ of interest; mrem/yr per jlCi/sec per m-2; K' a constant of unit conversion, 106 pCi/gCi; K" a constant of unit conversion,

= 8760 hr/yr;

k. the radiological decay constant for radionuclide i, sec t the exposure time, sec,

= 4.73 x 108 sec (15 years);

DFGi = the ground plane dose conversion factor for radionuclide i, mrem/hr per pCi/m2 I/jIk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Pag 29of6 SF = the shielding factor (dimensionless);

Ii 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 DFGi values is presented in Table E-6 of Regulatory Guide 1.109 Revision 1.

C. Grass-Cow or Goat-Milk Pathway

-,Etep)

Rim = liK'QFUapFm(DFLi)a e xjtf fpf r(l -e i + (l-fpf5)

[JpkE.

S-kEtes) r(1-e i + e ith Y+ E-it 2.5-5 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 gCi/sec per m2; K' a constant of unit conversion, 106 pCi/gCi; 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 by unit area of pasture feed grass, kg/m2 Ys the agricultural productivity by unit area of stored feed, kg/m2 I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 30 of 66 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 i for the receptor in age group a, mrem/pCi; XEi = Xi +w Xi = the radiological decay constant for radionuclide i, 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; tb = period of time that activity builds up in soil, sec; Biv = concentration factor for uptake of radionuclide i from the soil by the edible parts of crops, pCi/kg (wet weight) per pCi/kg (dry soil);

P = effective surface density for soil, kg (dry soil)/m 2; fp = fraction of the year that the cow or goat is on pasture; fs = 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 5 1Page 31 of 66 For radionuclides other than iodine, the factor Ii is equal to one.

For radioiodines, the value of Ii 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 fp 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 deposition. Therefore, the Ri is based on X/Q:

RT = K'K".FmQFUap(DFLi)a 0.75(0.5/H) 2.5-6 M

where RT = dose factor for the cow or goat milk pathway for tritium for RTM the organ of interest, mrem/yr per mCi/m 3 ;

K"' = a constant of conversion,

= 10 3 gm/kg; 3

H = absolute humidity of the atmosphere, gm/m ;

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 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 32 of 66 D. Grass-Cow-Meat Pathway The integrated concentration in meat follows in a similar manner to the development for the milk pathway, therefore:

RiB = liK'QFUapFm(DFLi)a e -Xitf fpfs + (I-fpfs)

++e-kith 2.5-7 where RiB = dose factor for the meat ingestion pathway for radionuclide i for any organ of interest, mRem/yr per ltCi/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; i = 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 Ii 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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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 IPage 33 of 66 The concentration of tritium in meat is based on its airborne concentration rather than the deposition. Therefore, the Ri is based on X/Q.

RT = K'K.'FfQFUap(DFLi)a 0.75(0.5/H) 2.5-8 B

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:

i-?te-r(I-e , i )I UULe-k~itL e

+ US fge"ki th Ri = liK'(DFLi)a a YVXEi v

r(l-e -kEte i

YVkE 2.5-9 where r -i dose factor for vegetable pathway for radionuclide i for V the organ of interest, mrem/yr per pCi/sec per m-2; K' = a constant of unit conversion,

= 106 pCi/gCi; L the consumption rate of fresh leafy vegetationby the Ua receptor in age group a, kg/yr; S = the consumption rate of stored vegetation Ua by the receptor in age group a, kg/yr; I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 34 of 66 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; Yv = the vegetation areal density, kg/mi2 ;

te = period of leafy vegetable exposure during growing season, sec; i = 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 Ii 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. L fL = USfg ] (DFLi)a 0.75(0.5/H) 2.5-10 a A where RT dose factor for the vegetable pathway for tritium for any v organ of interest, mrem/yr per mCi/m 3, All other terms remain the same as those in Equations 2.5-6 and 2.5-9.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 35 of 66 2.6 References

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.

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 5 IPage 36 of 66 Figure 1 Gaseous Radwaste U

,-J I

m]

z 0

I-0:

C,,.

" j

,-J

-j CAJ 0:

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 37 of 66 Figure 2 Ventilation System I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 38 of 66 Table 1 Gaseous Source Terms( 3 ) Ai, 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-1 33 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 Xe-139 - -

Ar-41 - -

Total 3.58E 03 2.46E 03 2.65E 03 9.1OE 03 1.62E 02 I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 39 of 66 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 + 1.1lM, for Long Term Releases Vi Radionuclide (mrem/yr per gCi/m3) (mrem/yr per gtCi/m3) (mrem/yr per gCi/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 2.1OE-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 1.61E-04 Xe-1 31m 9.15E 01 6.48E 02 3.31 E-05 Xe-1 33m 2.51E 02 1.35E 03 2.51 E-05 Xe-133 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-137 1.42E 03 1.39E 04 9.99E-05 Xe-1 38 8.83E 03 1.43E 04 9.90E-04 Xe-139 5.02E 03 7.1OE 04 5.79E-05 Ar-41 8.84E 03 1.29E 04 1.20E-03 I/jlk

MONTICELLO NUCLEAR GENERATING PLANT TITLE: GASEOUS EFFLUENT CALCULATIONS ODCM-05.01 Revision 5 Page 40 of 66 II 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 Bi* Li(X/q)s. 1.1 bi* (mrem)/yr Radionuclide (mrem/yr per gCi/sec) (mrem)/yr per gCi/sec) per giCi/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-03 Kr-90 1.85E-04 1.08E-03 2.54E-03 Xe-1 31 m 3.79E-05 1.10E-04 2.11E-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-1 35 2.57E-04 5.77E-04 9.94E-04 Xe-1 37 1.14E-04 1.52E-03 3.92E-03 Xe-1 38 1.13E-03 2.1OE-03 3.13E-03 Xe-139 6.63E-05 7.33E-03 2.01 E-02 Ar-41 1.57E-03 2.28E-03 3.1OE-03

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

I/jik

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 41 of 66 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 0- M CO- 00 t D00- Cc)N- CY) 04 00 Mc cO It cc ; N It Mcco 'T c0 cc [,- cc cc N,-cc0 (NJcc (D(DLO.It (0 )LO N-)

1- t ccD L0 0 MN0O Nl- N- Nl- (0 I- (C40)0C) (N 0N l ce) M - N (N (N N- (000 LO LO -0 .l1- C) cc cc) - N r-

- 1- -0cDcL 0c - cc 0) o N- cD cc 't N- cci cc cc6c U- 'tCc.- (0 cc N,- 00 0 04 o6-CV)CV)Ccc 't* 't ' cc ccLOV

0) cc- N-ca L6ccC-4 0 '4 cc N-C)4qt (N'4Lr 04 (N (D o cc) - C) (N4 ,t(N Cc F- N,- c.c cc C) 0 (N: 4 N- r-0)0) 0)0) 1,- 00 0)C)04(Nc Itqt cc cOcr (N)

<ca M-(D r'- cc cc N- 0.4- (N c 0) M a NC4c (NN- 00 M U)

LO CDI LO LO( 1-0) (D cc 0) N- 00 (N(NC (D a) 0 00- IZIt ct cctc 000C)- (N cO 00 U)'tce Vi cc Vi NC) 1:4 4 cc cc cc c -(0 '4 cc C) cc C-004'00 00 (N Cc) cc ccýcc cc cc cc6c C U-)

0- a) I-4 cci 4 (6 Cc cc) 0)

(0LI)'t CccccCT 0 L C- cc cc cci cc cc cc-c 0) NtL0[-NW'I C0 't cc Cc It C1 cc 6 g- MCccccc) 00 I- (M U) 0) 0c cc N- N- cc cc cc c cc cc cc cc;N 0(N1-

. ;66 C) O LO cc (0 cc 04 04 0cc0cca 04 )LOV 0'4 (N0c Cc '4c cccci cc cc

-LOV L ccN- 0)-cc 0 cc cc c0 cc1cc- (

N-ce)cccM N-i N-C) - It 00 'q 0 C(N(0 6 ,i ccocc6-06N-C14CD 0 CDV) 6 L6- It 14- 14z- It It* It Vc cO CD o 14 0) 'Ta) cc 0 (N Mc0)* - 0) N- 0) cc L0 CC (N 'I r-- to )'to )-

MCY)cfcc 0 O0 . .- cc 0 L0 LLO(N0cc-ODa

. c6o cci-cc6 -cyic(N-:c6c-;6 ui c 66 4 C14 L6 -ov.-ccooc (0Cc occ (NI- It N-- '4N*- C0) 1-cMc00 ccO cc0M- 'tocc0 occc o 'q40 N- N- -0 C) 0 00 r)(It 1,t ';T 'OI4tc(N-0 "tL00L 0000 000L W1-0000 LO0U cc cc cc cccc 00 000 wOuO LwwwwOLOU) 0w 0

cc ww www wwww wwwww 00000 wwwwww 00 0 0 D000 0 000 0 000C 000 0aa00 0000000 w 00 00 000 0 00 0 00000 000000O 0cccccccccccc0 0C)Cc ccCc CcCccc (D (D (D 09 o

cc ccc 0CcccccCccc WO0 0LCD 000 cc ccýC- N-0 (N

cc www cc ( 00 cc C 0000 rý000 (0 cc N-C (0 cc(0(

'4 0* 0OLO- I,-c IT01- cc M N4cc

~N04 C)N 0'40MT0) N w 00000 00 0D- C14cc'4 0

66C;6 6 6 0- tN CO 04- Cc 6666666 C."

uJ O 0 (N4- (N4 c0cLO qt MN C) 0

66 M N- N- N- (0c (N (-0 0- 6000006 6666 66C 00 000 6666 I/jlk

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 42 of 66 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) 6 (6 Cr -_:C6 C')U6(6 4(6 00 00 0

0) 0 CD) V) 00 NC'4 CD V- t-

~0) q~

CO M' 04CDCDX) [I- N-0) C14 C- M(N Y) 0 c') M 00

't 't ) L0 U') (.0C It V CO CD CD CD CD CDCD - 0) (0 N0 - 00)

- N C) CD N-Lf 04 CDCD0N CC)O UN') X L V L 0 (N1CV)N- CD CD) C1 CD)N- 0).1-

- N M' CDN- 0 M' 0) P- C') It CDV) 0)

D CD CD CD CD r- a0M00 0 (NL O C 0) 0) 0 CDwr- (D 0 -- r- 0 CD- 0)- C')

r~- ICC-- N1- 0) Lo N-e N(N D CI) Lf) 'I (0 (a C') CDM N- 0(N N- (N (N (0 CD r- 00 M C') N- CD)CD r- MN LO 't MNM- M LO( M M U)0 w' ý0 C')

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 43 of 66 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 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 44 of 66 Table 4 Child Critical Organ Dose Parameters for Radionuclide i for the Inhalation Pathway Pi I

Nuclide mrem/yr ýtCi/m3 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-134 1.01E 06 Cs-136 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 I/j k

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 45 of 66 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 Ki Li Factor Mi Factor Ni Radionuclide mrem/yr pCi/m3 mrem/yr ýjCi/m3 mrad/yr gCi/m 3

mrad/yr gCi/m3 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 1.61E+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 1.01E+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 1.11E+03 Xe-1 33m 2.51 E+02 9.94E+02 3.27E+02 1.48E+03 Xe-1 33 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-1 35 1.81 E+03 1.86E+03 1.92E+03 2.46E+03 Xe-1 37 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-1 39 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 I/j 1k

MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 46 of 66 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 mrad/yr mrem/yr mrad/yr Noble Gas mrem/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-03 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-1 31 m 3.31 E-05 5.21 E-05 3.79E-05 5.97E-05 Xe-1 33m 2.51 E-05 4.09E-05 2.87E-05 4.68E-05 Xe-1 33 2.61 E-05 4.08E-05 2.99E-05 4.67E-05 Xe-1 35m 3.34E-04 5.06E-04 3.82E-04 5.79E-04 Xe-1 35 2.24E-04 3.37E-04 2.57E-04 3.89E-04 Xe-137 9.99E-05 1.51E-04 1.14E-04 1.73E-04 Xe-1 38 9.90E-04 1.49E-03 1.13E-03 1.70E-03 Xe-1 39 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 5 1Page 47 of 66 Table 7 Ri Values for the Monticello Nuclear Generating Plant Ground Pathway CD0) o 0000--O0oOOOO'-0000DC toNP- (D(0) CON. -t- -00 00

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 IPage 48 of 66 Table 8 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Adult Age Group m 000 00 00 0000 0000 00000 00000000 0000000000000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 IPage 49 of 66 Table 9 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Teen Age Group C> 0 0 0 0000 000000000000000000000 00000 00 0 000 0 0

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 50 of 66 Table 10 Ri Values for the Monticello Nuclear Generating Plant Vegetable Pathway Child Age Group 000000000000000000000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 51 of 66 Table 11 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway Adult Age Group (N00000000000000000000 000000000000000000000 (000 00 00 0000 00000000 0 C C C0- D D0D00 WWWWWWWUWUJWWWWJWWWWWWW CDCDCD000CD-CDrCD CD CDC ) 00 DC /)D

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SMONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 Revision 5 TITLE: GASEOUS EFFLUENT CALCULATIONS Page 52 of 66 Table 12 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway Teen Age Group CN00000000000000000000 000000000000000100000 C WWWWWWWWWWWWWWWWWWWWW

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 53 of 66 Table 13 Ri Values for the Monticello Nuclear Generating Plant Meat Pathway Child Age Group CDCC 000C0 00 000000000000000000000 0 0 000 0000 0 000 0

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 IPage 54 of 66 Table 14 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Adult Age Group S2 WWWWWWUL U UL LJWWWJW ULUL ULUuJWWWWWU I_. oo o)C o)C o)C oo )C o DCo D0C

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0 MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 I Page 55 of 6(Ei Table 15 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Teen Age Group OOOOOOOOOOOOOCD) OOODCDCCDDC COOOa

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 56 of 66 Table 16 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Child Age Group 0000000000000000000000 0 0 0 0 00 0 C >000 0 0 00 0 00 0 0 S LU Lu Lu LU Lu Lu Lu Lu Lu W Lu Lu LU W Lu Lu Lu Lu Lu Lu Lu

_ CD00000000000000000000 -

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LU LUW LU LU LU LU LU LUWWLULUWWWW LULU Lu W

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) C D O 0000000tO-000 00 It WW000 C D 0W0WW WWWW W E

ci 00C) *U)t1 O( C O I-ctC0 L jCV) I,- '-CoC)~ CC C NmmN 00C) - - - 00 't OIt) c') - 't- "N CD .0 - 't 0

0)

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 57 of 66 Table 17 Ri Values for the Monticello Nuclear Generating Plant Cow Milk Pathway Infant Age Group SC>000 00 00 00 00 0000 00000 0000 00000000000000000

_. )C )C

- )C0 )C)'

0 a000aC> 0 0 0C,000 c'J 000 0D0 0 0 0 0 00 0 )0 00 0 0 0 00 0

CD, m 0tC)1-00 0000D 00 ) D C) ) 0OY)0I D0 D0 C()

U 000000000000000000000

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= WWWWWWWWWWWWWWWWWWWWW

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.~ 0000000000L00-C0-CN a)a 000 C000*0000*0*0*')

a) a) LUW LUWUWLLU UWWLUWLULUWWU W 2W q

0000000 0- - -OI-0-NP-00 C.) 00000000000000000000rl 00000000-0000-0-0000004 It W W t0 o O E

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 58 of 66 Table 18 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Adult Age Group co000 0000 000000000000000000000 0000 0000 00 00 0

._ 0I 0 0O0 0O r.-00000000000000000000- 0 0 00000 0 0CD0CD0 00D0CD

-00000000000000000000 ~

0LO00000 00C) a C) C0 C) C)

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r00000000C0000000000000 0 UC -C00000000000 C) C C D0000 Q E

-( 0000000OO0 OC00000000

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> L00 (D 000-00 *\r-L ' 000 '0

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 59 of 66 Table 19 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Teen Age Group e*000 000000000000000000 000000000000000000000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 60 of 66 Table 20 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Child Age Group

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0

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> cf)o cCJN0)00 N m0C N0CDCD NCOm0C),o)c000 0 0000000000000-0-00000 COC~)0--D00 1-- 00 ,--LO 'L6 Ce ) 0( 00 .

0 00 LO 0 0C 4000 1-'It0 C )C)0(C MCDC')00 WCLUUJULLU LU LULLU ULULU WULWULWLW WLW WLW E 0 0 0M 0 01- W O W0 W O It D N- CL0 00 S00000000*0000,0'00000 4-cu 00 NW__P-000-CDO0CO0 E

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I MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 I Page 61 of 6(6li Table 21 Ri Values for the Monticello Nuclear Generating Plant Goat Milk Pathway Infant Age Group 00000000000000000000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 62 of 66 Table 22 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Adult Age Group m o 00 000 00000 ooooC)oo0 00 0o 000o 00000000 0000000000000

.c WwwwwwwWw*wwwLWWWWWWWW U) o 0 0o0 0 0

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 IPage 63 of 66 Table 23 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Teen Age Group 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 c'

.E WWWWWWWWWWWWWWWWWWWWW 000000000000000000000

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 Page 64 of 66 Table 24 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Child Age Group 000000000000000000000 0000 0 0Cl0 0 0 0 00 0 0 00CD0 000 C 0

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 65 of 66 Table 25 Ri Values for the Monticello Nuclear Generating Plant Inhalation Pathway Infant Age Group N0 00O 0000 00 00O 0000 00>000 0000000DCDCDCD0 0 00 00 00 00 0 >0 0

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-05.01 TITLE: GASEOUS EFFLUENT CALCULATIONS Revision 5 1Page 66 of 66 Table 26 Table of Radioisotope Constants Used by EBARR Isotope Fission Yield Decay Constant 1 Xe-133 0.0669 0.00000152 2 Xe-135 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-139 0.0540 0.0169 8 Kr-89 0.0459 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 I/j1k

MONTICELLO NUCLEAR GENERATING PLANT ODCM-06.01 TITLE: DOSE FROM ALL URANIUM FUEL CYCLE Revision 2 SOURCES Page 1 of 5 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD OF REVISION ............................................... 2 2.0 DOSE FROM ALL URANIUM FUEL CYCLE SOURCES .................... 3 2.1 Dose Com m itm ent .............................................. 3 2 .2 B ases ......................................................... 5 Prepared By:

Reviewed By:

OC Final Review Meeting: Date:

Approved By Plant Manager: Date:

I FOR ADMINISTRATIVE USE ONLY 3087 (DOCUMENT CHANGE, HOLD, AND COMMENT FORM) incorporated:

IResp Supv: CHEM - Assoc Ref: CHEM-I ISR: N Fre : 2 yrs IARMS: ODCM-06.01 Doc Type: 7030 Admin Initials: Date:

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-06.01 TITLE: DOSE FROM ALL URANIUM FUEL CYCLE Revision 2 ISOURCES Page 2 of 5 1.0 RECORD OF REVISION Revision No. Date Reason for Revision 1 October - 2000 Moved previous ODCM-04.01 (INFORMATION RELATED TO 40CFR190 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-06.01 TITLE: DOSE FROM ALL URANIUM FUEL CYCLE Revision 2 SOURCES Page 3 of 5 GENERAL NOTE: This procedure includes Improved Technical Specifications ([ITS])

information that is NOT applicable to Current Technical Specifications ([CTS]) and [CTS] information that will change when

[ITS] is implemented. The [ITS] information SHALL NOT be used prior to the [ITS] effective date. On and after the [ITS] effective date, the [ITS] information SHALL be used in lieu of the corresponding

[CTS] information.

2.0 DOSE FROM ALL URANIUM FUEL CYCLE SOURCES 2.1 Dose Commitment 2.1.1 Controls A. [CTS] In accordance with T.S.6.8.D.10, 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.

[ITS] In accordance with Tech Spec 5.5.3.j., 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 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-06.01 TITLE: DOSE FROM ALL URANIUM FUEL CYCLE Revision 2 SOURCES Page 4 of 5 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 2 SOURCES Page 5 of 5 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 40CFR1 90. 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 ifthe 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 1 of 23 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD O F REVISION ............................................... 2 2.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ............ 3 2.1 Monitoring Program ............................................. 3 2.2 Land Use C ensus ................................................ 5 2.3 Sa m pling ....................................................... 6 2.4 Interlaboratory Comparison Program ......... .................... 7 2 .5 Ba se s ................................................... ...... 8 Figure 1 Radiation Environmental Monitoring Program Sampling Locations ..... 9 Figure 2 4 - 5 Mile Ring, Control and Special Interest TLD Locations ........... 10 Figure 3 Site Boundary TLD Locations ..................................... 11 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis ................. 12 Table 2 Reporting Levels for Radioactivity Concentrations in Environmental Samples (Reporting Levels) ...................................... 17 Table 3 Maximum Values for the Lower Limits of Detection (LLD) ............. 18 Table 4 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sampling Locations ........................... 20 Approval: PCR 01061011 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 2 of 23 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-10c 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 10 MONITORING PROGRAM Page 3 of 23 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)

+ +..---------

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

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 4 of 23 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 10 MONITORING PROGRAM Page 5 of 23 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 ft 2 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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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 6 of 23 2.3 Sampling 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. If it 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. If the 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. If edible 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 five additional shallow groundwater monitoring wells was recommended 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. When the additional wells are installed, they will be added to the sampling locations listed in Table 4.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 7 of 23 2.4 Interlaboratory Comparison Program 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 10 MONITORING PROGRAM Page 8 of 23 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 if required 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 Program 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 10 MONITORING PROGRAM Page 9 of 23 Figure 1 Radiation Environmental Monitoring Program Sampling Locations I

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 10 of 23 Figure 2 4 - 5 Mile Ring, Control and Special Interest TLD Locations I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 11 of 23 Figure 3 Site Boundary TLD Locations N

U, C

0 C.,

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 12 of 23 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis 0

0

. , U) C: ) >

C Ct') Ucý co Ta--a -W) a, I.- ~~ 97- U -, a, U) 0 CLa tC

=0 Q-co

0) 0 -0 E.2 E 0 a, r E co 2 a: W a, I-a)a 0 :0=

L coC.,

ao 0- 2D0 ?:t 2( r--.T020 co C C: C:

0 E 0 a.)

j0~ a, U) un 0 a) 0 CL 0)

C a,

21 2

a,

3 a, a3 a) o co )*-

E* E 0 L4-- 0 -J ,-

M i)~ 0 C C 0 I- 0

. 0~~~~c 0"'* (D* *. @ a),ý 0a,- a, ao ca C 0 4- -

- : L a)

E8 cna, 70

> L) 0 C > a, Z -0 caEo_ :. >z _ _00 C -E E u) E a, - > -o o a, a .06

.-0 C a). >oa . 0 M 0 6 1 a,) ci (D 03 .

o"*0- 8C -O CU aCi

--- ,.',- - Q 0 E C 7

>. 0 C coa

.2 -2 Co J0 TO o6 a, a, E~ )co5 E: L)0 C- i a,

E CoC) .2

.O C >

a, OU) z_ 0

.cua

,E E a)

CL U ,M.C_

a, v 0) U oQý I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 13 of 23 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (cont'd) tCO Co

<9 0 0 00.-

L" 00 0o 0 C< 0(

omO-.ý. O -"O "6-4-Qt E-o E--(' E co E 0_6E 4-- r0 [ '-o o t'-- -0 o MLL CLE (n U)

E0t 0 _T_

>1 U 00, OL. ,.,-

.To o -0o -,.

a) 0' -- o>

o,-. -(

.Eoin E E cu 0- a) - 0) ~ L),

a) ._ 2 -- c2 0 -U)0_C (D0 2C .

E : C)- t2 oII.

.-(D , .,_ ..

0° ,

0-4-- (Dg . J_ý

- m*

L (Dn 0-00..--

. C:

2 w a,) 0 "'U c = 0-E. 0 0 m , E- ,

co U) 70 (U= C U)C iCO0C1).LCn U)( '

0

>(

(I)

C mE 0 0 C-,

0,2

3 ý0

-o1t 6o(

C0 )

0

(~/) EU a.

E xi W 61 09 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 14 of 23 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (cont'd)

CU 4--

"o 0 I0n co Cn (n 0

LL~ (n 0 0M Fn < OC *w m2"E"60-F

.nE % 0 EL E C')M

-0 Wo CU .,U ": QQ) M >,M 2N > CUL U (-Q E cu -. 0')

E

=; _

a, E- cu E"" E>, E *Z E E zo E *-

E (

0.!1 0, -0 c 0 Ofi0 C M 4--*

. 0 CU rC a: : .

E)C)0C CU 0 a)

O)u

=o 0E=oM E3

,,. " ,. c0 ° 3 (=~~=

a) 0 E -a ~ !_?E 0 a : M2 2 ) ~C -

0Ca a)E Eao aw Ed) U, CUC~, C W EEC ,

75.)-.CLLZ E 4--: -i 0 0 CL E

_o ) I-L -,)- O3& OoEcn-(n, C-C ( C0 a) - C E0=(co -a.

U) o - M I.- *( E 2(

0,E-2 ._ Q E- 0 E o 04--

>2 +/-2 L E 60

-0 -0 w

U( E00 _S I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 1 MONITORING PROGRAM Page 15 of 23 Table I Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (cont'd)

>,C C:

Cu L.L C: 0.- CU *L-5 ¢ o0 (- C

-0< S. -

0 , C 0

.CnFu E D' 0 EcuCu) C'Cu a ,*.*

E0ua 0 Ci.0 E9*- a I- 0 EnC C: LL (9 Cu: 0c C: C":3 .,

0

-a,

>0 CU, 0oC a, C.C E' W

)

CL, C")c' M0.

(D (D -o 0

M.J2 E E cu E ""

oU 4-CU EEE a, 0 E

~cCu 0-0 0- iCU 0

EU) a)

CU a- a)

-a) , a-c EE.*

3 0-= 0 E -0 0CuC :3-a Cu .0

-o C: U) -

CO)a a#)

C0 '- A0 .-

I-C. 0 CD o"-- 0 U) o, Cn CU *0 E,

-C Qcu a)

CI .0 U) 0Cu x .6 LL I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 16 of 23 Table 1 Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program

-Sample Collection and Analysis (cont'd)

CC.,

-L a), 0a)

0< C

.0 (0 .

-aCu=

I-o o E ca_, .000 c- Cu CU 0.~0 Ca, Cu, o E `E C.o c-0r E C 0_M 4 4-CL0 (D Co 0. a, 0 0 C

oaLL Cu.._oC.) a, a,

CD Et 4--

co 0 0 a,

a)

E E Co-0

-0.

CL E

0o 4- -

(DQ C, C: Cu CO 0 >'4 ,4 CuE8 A? -0 a, o CU a-0 S>0 4,--

.00)-0 ZaCE o E >,'5 CU) CE a) .m 0.

~cc o, E cN 6D ,

) -oC CL a) 6:

ccE E:6 Co

~0 0 0. .o C

CL CU aj)

-C 0, Cu E C 0 -s C !P~ a)

= 0 L 0 U) C 0 oE LL C,

0 C Q E -0 C CU Ci) 6 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 17 of 23 Table 2 Reporting Levels for Radioactivity Concentrations in Environmental Samples (Reporting Levels) u) 0 0 0 CY) x x x 0--) O O x U) ce) 0-E C) CO C)-- C- -

x x x x x x x 0E 0.

a) 0 0.L (n(D 00.

x 4_-

Ca)

Clo

"-Cl

.u0 x x x-

,.- C)

O O) 00O O O _) LO C) cc 0 LL~a C')

LO (N C (NI 1? ?

M0 0

~CNJ - c)6~ 0 0 CNJ c L0 LL C) 0 N N 0 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 18 of 23 Table 3 Maximum Values for the Lower Limits of Detection (LLD) I 0.)

U) -L C,0 0

000 LL.-

LO L 0 0.0 0

03 E

In In 0.

0 C0.0 aC)

L0. C0 O C 0L C0L.

C\.)

(n (1 0- 0n I 0 ~ Wn0 C 0! - *0 - ~ co~)

a

0) Y)0L 0 U) WT 1-. T" I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 19 of 23 Table 3 Maximum Values for the Lower Limits of Detection (LLD) (cont'd) I (n 6 Co C

0) cu 0).2 C6 C U-

~cu

-ýe 0 If) Cu '0) r

'0) 0 Cu)

CU- 0-0)

Co .0-_

CU E 0u x CL 00) -u Cn (1.4- a) (D

-2 ..- 0) "Lz C 0)f cN -0)

" -U Cn E0 E

0) o 0 0) z 0.

0 (1) .0 a) 0D 0)

0) 0~ z3 Z M>

0 CD 0 0 0 0) "..

Mu-; CU -6 z EC CU 0W CL ._2 0 a)

L) -0_ C75 CU LI- CU (.

CL Zo-C*

C.) :

CU 0 "0) a) 0)

cu 0 0)

E 0 E U)- -*

~0CU0 U a) Cf) a) CL W ca L)

0) .5L? -0C o 0) 0~ E C 0 a 0. CL M CU CD r =u EcE cu a)

.0 CU

() 00 0 a0)

Co 0)- E C 0 0) CU Cc C Cu CU xU 0) cc 0 0 .UE 0 cu 0 cu

-c Cu CD

0) U) o9 a) .CL- U)CL CD

-0 W W

~Cl .nE VCn 0n U) LO II E U.o C :EU) 0 CU 40- a)

.- -W0 (Dc Cj S0)

Cý :30CL C-CL .c - a) 0)

0) iu .0 0 V I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 20 of 23 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-10c Campbell Farm 10.6 357 N 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 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 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 21 of 23 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 Milk M-10c Campbell Farm 10.6 357 N Milk M-24 Weinand Farm 4.7 180 S Milk M-28 Hoglund Farm 3.8 300 WNW Cultivated crops (broad leaf vegetables) a,c Available Producer >10.0 M-27 Highest D/Q Garden** 0.64 207 SSW (corn)*

(potatoes)*

Particulates and Radio-iodine (air) M-1 c 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 0.8 146 SSE (air) M-5 Air Station M-5 2.6 134 SE 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) M03A Sherburne Ave. So. 1.29 55 NE (TLD) M04A Biology Station Rd. 0.5 86 E (TLD) M05A Biology Station Rd. 0.48 118 ESE (TLD) M06A Biology Station Rd. 0.54 135 SE (TLD) M07A County Road 75 0.5 155 SSE (TLD) M08A County Road 75 0.48 172 S (TLD) M09A County Road 75 0.38 209 SSW 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 22 of 23 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) M10A County Road 75 0.38 226 SW M11A 0.4 239 (TLD) County Road 75 WSW (TLD) M12A County Road 75 0.5 262 W (TLD) M13A North Boundary Rd. 0.89 324 NW (TLD) M14A North Boundary Rd. 0.78 334 NNW Direct Radiation - (about 4 to 5 miles distant from the plant)

(TLD) M01 B Sherco No. 1 Air Sta. 4.66 2 N (TLD) M02B County Road 11 4.4 18 NNE (TLD) M03B County Rd. 73 & 81 4.3 51 NE (TLD)

(TLD)

M04B M05B County Rd. 73 (196th Street)

City of Big Lake 4.2 4.3 67 89 ENE E

I (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 (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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-07.01 TITLE: RADIOLOGICAL ENVIRONMENTAL Revision 10 MONITORING PROGRAM Page 23 of 23 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 - (special interest locations)

(TLD) M01S Osowski Fun Market 0.66 242 WSW (TLD) M02S Krone Residence 0.5 224 SW (TLD) M03S Big Oaks Park 1.53 102 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 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. I 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; S Special interest locations.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 4 1Page 1 of 8 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD O F REVISIO N ............................................... 2 2.0 REPORTING REQUIREMENTS ......................................... 3 2.1 Radioactive Effluent Release Report ............................... 3 2.2 Radiological Environmental Operating Report ....................... 4 2.3 Annual Summary of Meteorological Data ........................... 5 2.4 Industry Initiative on Groundwater Protection ....................... 6 2.5 R ecord R etention ............................................... 7 Approval: PCR 01073390 I

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITL: REPORTING REQUIREMENTS Revision 48 1.0 RECORD OF REVISION Revision No. Date Reason for Revision 1 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.

2 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.

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

4. 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 4 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 40CFR1 90, 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 4 1Page 4 of 8 D. Type of waste (e.g., spent resin, compacted dry waste),

E. Type of container (e.g., LSA, Type A, Type B, Large Quantity),

and F. Solidification agent (e.g., cement, urea formaldehyde).

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 all on-site and off-site groundwater sample results taken in support of the Industry Initiative unless they will be documented in the Annual Radiological Environmental Operating Report.

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 4 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, as well as summarized and tabulated results of these analyses and measurements in the format of the table in the Radiological Assessment Branch Technical Position, Revision 1, 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.

2.3 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 4 Page 6 of 8 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.

2.4.2 Voluntary Communications to State and Local Officials A. Make informal communications by end of next business day to the designated State and Local Officials for the following events:

1. An inadvertent unmonitored on-site spill or leak from a radiologically contaminated source to the environment that has or can potentially get into the groundwater and exceeds 100 gallons or volume cannot be qualified; I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 4 Page 7 of 8

2. Any leak from higher risk systems (e.g., spent fuel pool) that can potentially get into the groundwater;

3. An off-site groundwater or surface water sample exceeds the reporting criteria in the Radiological Environmental Monitoring Program (REMP);

4. A sample of on-site groundwater or surface water, which is hydrologically connected to a current or future source of drinking water, exceeds the reporting criteria in the REMP.

B. When communicating with State and Local officials, be clear and precise when quantifying the release and how it applies to regulatory criteria. Ensure the following items are included in the communication:

1. That the communication is being made as part of the NEI Enhanced Groundwater Protection Initiative;

2. Date and time of the spill, leak, or sample result;

3. Whether or not the spill or leak has been stopped;

4. Level and nature of the contaminant;

5. Location and volume of the spill/leak if known, or sample result location, as applicable;

6. Source, if known;

7. Actions taken and related sample results to date; and

8. Potential or bounding annual dose to a member of the public; if applicable.

C. Following communication with State/Local officials, 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 plus 10 years:

(RECORDS MANAGEMENT) for the life of the corporation 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.

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I1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-08.01 TITLE: REPORTING REQUIREMENTS Revision 4 Page 8 of 8 the Offsite C. Records of reviews performed for changes made to C. Records of reviews performed for changes made to the Offsite Dose Calculation Manual.

I D. Liquid and gaseous radioactive releases to the environs.

E. Off-site environmental surveys F. Radioactive shipments I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 1 of 74 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECO RD O F REVISIO N ............................................... 2 2.0

SUMMARY

OF DISPERSION CALCULATION PROCEDURES .............. 3 2 .1 R eferences ..................................................... 4 Table 1 Monticello Release Conditions .................................... 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 .................... 33 Table 9 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases <500 Hrs/Yr or <150 Hrs/Qtr .................... 41 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 Prepared By:

Reviewed By:

OC Final Review Meeting: Date:

Approved By Plant Manager: Date:

-FOR ADMINISTRATIVE USE ONLY 13087 (DOCUMENT CHANGE, HOLD, AND COMMENT FORM) incorporated:

Resp Supv: CHEM lAssoc Ref: CHEM-I SR: N Freq: 2 yrs ARMS: ODCM-APP-A Doc Type: 7030 IAdmin Initials: Date:

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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-0473( 2 ).

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 AT100-10m and 100 meter wind data (joint data recovery of 95 percent).

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 4 of 74 2.1 References

1. Sagendorf, J. F. and Coil, 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 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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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 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 0 IPage 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 1.1OE-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 TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 8 of 74

-II Table 4 Monticello Reactor Vent Dispersion Parameters for Long Term Mixed Mode Releases

>500 HrsiYr 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 5.71E-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-06 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 1.21E-05 3.73E-06 2.01E-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 TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 9 of 74 II 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 0.8 0.9 1.0 1.1 1.2 1.3 1.4 Sector*

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 4.1OE-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 6.10E-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 5.1OE-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 TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 10 of 74 iI 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 1.6 1.7 1.8 1.9 2.0 2.1 Sector* 1.5 N 4.35E-07 3.91E-07 3.54E-07 3.23E-07 2.96E-07 2.72E-07 2.52E-07 NNE 3.32E-07 3.00E-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 2.21 E-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 2.81 E-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 3.1OE-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 0 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/m 3 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 1.41E-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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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 I Page 12 of 74 I--

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/m 3 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 1.51 E-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 0 1Page 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)

For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m 3 Miles Sector* 3.6 3.7 3.8 3.9 4.0 4.1 4.2 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 7.01 E-08 6.74E-08 6.48E-08 6.24E-08 6.02E-08 5.81 E-08 5.61 E-08 ENE 9.02E-08 8.69E-08 8.38E-08 8.10E-08 7.82E-08 7.57E-08 7.33E-08 E 1.04E-07 1.00E-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 1.1OE-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 1.10E-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 1.91 E-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 1.10E-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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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 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/m 3 Miles Sector* 4.3 4.4 4.5 4.6 4.7 4.8 4.9 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 7.1OE-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 8.00E-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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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 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)

For Standard Distances (As Measured from the Reactor Vent) (X/Q), sec/m 3 Miles 5.0 Sector*

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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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 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 Sector* 0.1 0.2 0.3 0.4 0.5 0.6 0.7 N 2.75E-07 1.10E-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 1.01E-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 1.1OE-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 1.1OE-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 0 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)

For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m2 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 5.01E-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 2.71E-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 0 Page 18 of 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 Sector* 1.5 1.6 1.7 1.8 1.9 2.0 2.1 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 0 1Page 19 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 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 4.511E-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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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 2.9 3.0 3.1 3.2 3.3 3.4 3.5 Sector*

N 6.52E-10 6.09E-10 5.67E-10 5.30E-10 5.00E-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 0 Page 21 of 74 I I 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 3.6 3.7 3.8 3.9 4.0 4.1 4.2 Sector*

N 4.22E-10 4.00E-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 0 IPage 22 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 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Sector*

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 2.1OE-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 2.00E-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 0 IPage 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)

For Standard Distances (As Measured from the Reactor Vent) (D/Q), /m2 Miles 5.0 Sector*

N 2.36E-10 NNE 1.56E-10 NE 9.90E-11 ENE 9.49E-1 1 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 GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 4.51E-09 NNE 7.06E-08 4.30E-09 NE 1.00E-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 0 Page 25 of 74 Table 7 Monticello Offgas Stack Dispersion Parameters for Long Term Elevated Releases

>500 Hrs/Yr or >150 Hrs/Qtr For Standard Distances (As Measured from the Offgas Stack) (x/Q), sec/m3 Miles 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Sector*

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 1.31E-08 3.90E-08 5.97E-08 7.41E-08 8.66E-08 9.91E-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 3.41 E-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 0 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 5.10E-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 9.01E-08 9.61E-08 1.01E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 27 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/M 3 Miles Sector* 1.5 1.6 1.7 1.8 1.9 2.0 2.1 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 4.10E-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 4.81E-08 4.88E-08 4.92E-08 4.94E-08 4.95E-08 W 4.71E-08 4.79E-08 4.85E-08 4.89E-08 4.90E-08 4.90E-08 4.89E-08 WNW 5.05E-08 5.10E-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 8-31-7 Measured relevant to the Offgas Stack.

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MONTICELLO NUCLEAR GENERATING PLANT TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 28 of 74 I1 I

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 Sector* 2.2 2.3 2.4 2.5 2.6 2.7 2.8 N 4.41 E-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 ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 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 3.1OE-08 NNE 3.34E-08 3.22E-08 3.11E-08 3.00E-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 2.21 E-08 2.14E-08 2.07E-08 2.00E-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 3.61E-08 3.47E-08 3.34E-08 3.21E-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 3.81 E-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 0 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/m Miles 3.6 3.7 3.8 3.9 4.0 4.1 4.2 Sector*

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 3.01E-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 3.71 E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 IPage 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 Sector* 4.3 4.4 4.5 4.6 4.7 4.8 4.9 N 2.45E-08 2.38E-08 2.32E-08 2.26E-08 2.20E-08 2.15E-08 2.10E-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 1.51 E-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 1.31 E-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 3.71E-08 3.60E-08 3.50E-08 3.41E-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 0 1Page 32 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/m 3 Miles 5.0 Sector*

N 2.05E-08 NNE 1.79E-08 NE 1.74E-08 ENE 1.34E-08 E 1.25E-08 ESE 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 0 Page 33 of 74 Table 8 Monticello Offgas Stack Dispersion Parameters for Long 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 1.44E-09 4.89E-09 6.31 E-09 5.66E-09 5.00E-09 4.44E-09 4.OOE-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 0.8 0.9 1.0 1.1 1.2 1.3 1.4 Sector*

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 4.00E-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 1.00E-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 4.81E-09 4.46E-09 3.89E-09 3.37E-09 2.95E-09 2.61E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 Sector* 1.5 1.6 1.7 1.8 1.9 2.0 2.1 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 5.1OE-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 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 2.9 3.0 3.1 3.2 3.3 3.4 3.5 Sector*

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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 38 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* 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-10 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.

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I MONTICELLO NUCLEAR GENERATING PLANT 0DCM-APP-A TITLE: APPENDIX A Revision 0 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 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Sector*

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 8.10E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 Sector* 5.0 N 1.09E-10 NNE 1.30E-10 NE 7.99E11 ENE 6.71E-11 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-11 WSW 8.69E-11 W 7.94E-11 WNW 9.53E-11 NW 1.16E-10 NNW 1.33E-10 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 0 1Page 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/m3 ) 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.

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MONTICELLO NUCLEAR GENERATING PLANT TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 42 of 74

1

-I Table 10 Monticello Offgas Stack Dispersion Parameters for Short Term Elevated Releases

<500 Hrs/Yr or <150 Hrs/Qtr For Standard Distances (As Measured from the Offgas Stack) (x/q), sec/m3 Miles 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Sector*

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 8.41E-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.

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MONTICELLO NUCLEAR GENERATING PLANT TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 43 of 74

-I I-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 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 1.61 E-07 1.55E-07 ENE 1.62E-07 1.80E-07 1.75E-07 1.84E-07 1.96E-07 1.94E-07 1.91 E-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 1.71 E-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 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.

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MONTICELLO NUCLEAR GENERATING PLANT TITLE: APPENDIX A 0DCM-APP-A Revision 0 Page 44 of 74 II 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 1.5 1.6 1.7 1.8 1.9 2.0 2.1 Sector*

N 2.56E-07 1.89E-07 2.1OE-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 1.71 E-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 2.00E-07 2.01E-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 2.01E-07 1.96E-07 1.92E-07 1.87E-07 1.81E-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.

I/plr

MONTICELLO NUCLEAR GENERATING PLANT TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 45 of 74 I1 I

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 2.2 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 1.51 E-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 1.61 E-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 1.91 E-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.

I/plr

MONTICELLO NUCLEAR GENERATING PLANT TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 46 of 74 II 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 1.10E-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 9.89E-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.

I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 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/m3 Miles Sector* 3.6 3.7 3.8 3.9 4.0 4.1 4.2 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 9.00E-08 8.81 E-08 ENE 1.03E-07 1.01E-07 9.56E-08 9.34E-08 9.07E-08 8.79E-08 8.58E-08 E 9.00E-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 8.64E-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 1.1OE-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 1.61 E-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 1.10E-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.

I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 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 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Sector*

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 8.71 E-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 8.1OE-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 1.01E-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.

I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 49 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 5.0 Sector*

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 1.11 E-07 S 8.84E-08 SSW 8.80E-08 SW 1.19E-07 WSW 1.13E-07 W 1.13E-07 WNW 1.21E-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.

I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 1.31E-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.

I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 5.01E-09 4.56E-09 4.25E-09 3.75E-09 3.31E-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 4.1OE-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.

I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 52 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* 1.5 1.6 1.7 1.8 1.9 2.0 2.1 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 2.81E-09 2.31E-09 2.08E-09 1.91E-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 2.1OE-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.

I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 2.1OE-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.

I/pIr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 Sector* 2.9 3.0 3.1 3.2 3.3 3.4 3.5 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 1.31 E-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 9.00E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 Sector* 3.6 3.7 3.8 3.9 4.0 4.1 4.2 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.OOE-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 9.1OE-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 56 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* 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 7.1OE-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 57 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* 5.0 N 4.39E-10 NNE 5.46E-10 NE 3.48E-10 ENE 3.56E-10 E 3.45E-10 ESE 4.80E-10 SE 6.78E-10 SSE 8.45E-10 S 5.70E-10 SSW 3.98E-10 SW 3.92E-10 WSW 4.12E-10 W 4.05E-10 WNW 4.48E-10 NW 4.31E-10 NNW 5.06E-10 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 0 Page 58 of 74 Table 12 Monticello Reactor Building Vent Dispersion Parameters for Short Term Elevated Releases <500 Hrs/Yr 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. 3.51 E-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 6.51 E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 59 of 74 Table 13 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) (X/q), sec/m3 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 4.01E-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 8.91 E-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.

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MONTICELLO NUCLEAR GENERATING PLANT TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 60 of 74 i

-- I 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 0.9 1.0 1.1 1.2 1.3 1.4 Sector* 0.8 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 1.80E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 IPage 61 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/m 3 Miles Sector* 1.5 1.6 1.7 1.8 1.9 2.0 2.1 N 1.28E-06 1.15E-06 1.05E-06 9.60E-07 9.00E-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 1.00E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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/m 3 Miles Sector* 2.2 2.3 2.4 2.5 2.6 2.7 2.8 N 7.21E-07 6.79E-07 6.38E-07 6.1OE-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 6.51 E-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 6.1OE-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 8.1OE-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 6.91 E-07 6.47E-07 6.07E-07 5.89E-07 5.72E-07 5.60E-07 5.51 E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 IPage 63 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* 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.OOE-07 4.80E-07 4.62E-07 4.45E-07 4.27E-07 4.09E-07 ESE 5.01E-07 4.74E-07 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 4.1OE-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 IPage 64 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* 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 3.57E-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 3.41E-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 3.51E-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 0 1Page 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/m 3 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 3.00E-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 2.71E-07 2.63E-07 2.56E-07 2.48E-07 SE 3.32E-07 3.20E-07 3.1OE-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 66 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/m 3 Miles 5.0 Sector*

N 3.03E-07 NNE 2.52E-07 NE 2.30E-07 ENE 2.84E-07 E 2.82E-07 ESE 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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE:

II APPENDIX A Revision 0 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 Sector* 0.1 0.2 0.3 0.4 0.5 0.6 0.7 N 6.91E-07 2.69E-07 1.52E-07 1.01E-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.

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MONTICELLO NUCLEAR GENERATING PLANT TITLE: APPENDIX A ODCM-APP-A Revision 0 Page 68 of 74 II 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 0.8 0.9 1.0 1.1 1.2 1.3 1.4 Sector*

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.OOE-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 1.10E-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 1.01E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 Page 69 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* 1.5 1.6 1.7 1.8 1.9 2.0 2.1 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 9.00E-09 7.94E-09 7.17E-09 6.48E-09 5.74E-09 5.17E-09 SSE 1.10E-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 5.31E-09 4.72E-09 4.14E-09 3.66E-09 3.56E-09 3.24E-09 WSW 4.91E-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 2.71E-09 WNW 6.67E-09 5.78E-09 5.06E-09 4.43E-09 3.92E-09 3.71E-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 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 4.71 E-09 4.43E-09 4.07E-09 3.79E-09 3.49E-09 3.24E-09 3.02E-09 SSE 5.01E-09 4.58E-09 4.21E-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 2.41 E-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.

l/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 1.10E-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 2.00E-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 1.61E-09 1.52E-09 1.43E-09 1.36E-09 1.27E-09 1.21E-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 1.61 E-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.

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I1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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)

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 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.

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I1 MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 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 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Sector*

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 1.1OE-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.

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-A TITLE: APPENDIX A Revision 0 1Page 74 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 5.0 Sector*

N 9.09E-1 0 NNE 7.21 E-1 0 NE 5.24E- 10 ENE 4.68E-1 0 E 5.58E-10 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-1 0 WNW 8.70E-10 NW 7.93E-10 NNW 8.42E-10 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-B TITLE: APPENDIX B Revision 1 1Page 1 of 21 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECORD O F REVISIO N ............................................... 4 Table 1 Monticello Nuclear Generating Plant Site Meteorology - Stability Class A, Elevation 10 Meters ................................................ 5 Table 2 Monticello Nuclear Generating Plant Site Meteorology - Stability Class B, Elevation 10 Meters ................................................ 6 Table 3 Monticello Nuclear Generating Plant Site Meteorology - Stability Class C, Elevation 10 Meters ................................................ 7 Table 4 Monticello Nuclear Generating Plant Site Meteorology - Stability Class D, Elevation 10 Meters ................................................ 8 Table 5 Monticello Nuclear Generating Plant Site Meteorology - Stability Class E, Elevation 10 Meters ................................................ 9 Table 6 Monticello Nuclear Generating Plant Site Meteorology - Stability Class F, Elevation 10 Meters ................................................ 10 Table 7 Monticello Nuclear Generating Plant Site Meteorology - Stability Class G, Elevation 10 Meters ................................................ 11 Table 8 Monticello Nuclear Generating Plant Site Meteorology - All Classes Com bined Elevation 10 Meters ....................................... 12 Table 9 Monticello Nuclear Generating Plant Site Meteorology - Stability Class A, Elevation 100 Meters ............................................... 14 Table 10 Monticello Nuclear Generating Plant Site Meteorology - Stability Class B, Elevation 100 Meters ............................................... 15 Table 11 Monticello Nuclear Generating Plant Site Meteorology - Stability Class C, Elevation 100 Meters ............................................... 16 Table 12 Monticello Nuclear Generating Plant Site Meteorology - Stability Class D, Elevation 100 Meters ............................................... 17 Prepared By:

Reviewed By:

OC Final Review Meeting: Date:

Approved By Plant Manager: Date:

FOR ADMINISTRATIVE USE ONLY 3087 (DOCUMENT CHANGE, HOLD, AND COMMENT FORM) incorporated:

Resp Supv: CHEM IAssoc Ref: CHEM-I SR: N Freq: 2 Yrs ARMS: ODCM-APP-B IDoc Type: 7030 1Admin Initials: Date:

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 2 of 21 SECTION PAGE Table 13 Monticello Nuclear Generating Plant Site Meteorology - Stability Class E, Elevation 100 Meters ............................................... 18 Table 14 Monticello Nuclear Generating Plant Site Meteorology - Stability Class F, Elevation 100 Meters ............................................... 19 Table 15 Monticello Nuclear Generating Plant Site Meteorology - Stability Class G, Elevation 100 Meters ............................................... 20 Table 16 Monticello Nuclear Generating Plant Site Meteorology - All Classes Combined Elevation 100 Meters ..................................... 21 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 3 of 21 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. I I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 Page 4 of 21 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 ito 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 18 63 30 7 122 NNE 20 30 14 2 68 NE 13 21 26 2 65 NNE 14 16 4 0 35 E 28 40 12 0 80 ESE 33 50 5 6 97 SE 26 50 35 12 128 SSE 46 96 122 11 283 S 36 68 117 42 275 SSW 63 94 58 20 244 SW 35 64 32 5 143 WSW 25 74 26 0 128 W 29 47 18 1 95 WNW 34 73 79 14 204 NW 29 58 61 3 154 NNW 29 109 67 13 224 VAR 0 0 0 0 0 Total Hours This Class: 2350 Hours of Calm This Class: 5 Percent of All Data This Class: 14.27 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 5 of 21 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 Ito 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 14 19 4 0 1 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 6 of 21 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 Ito 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 12 16 8 0 0 36 NNE 13 13 4 34 NE 10 11 5 30 ENE 19 4 2 26 E 8 10 2 20 ESE 14 12 5 35 SE 12 16 9 37 SSE 10 21 8 39 S 12 28 18 67 SSW 16 12 3 37 SW 11 14 3 32 WSW 5 11 2 20 W 22 19 5 51 WNW 23 38 19 87 NW 17 18 30 72 NNW 22 40 27 97 VAR 0 0 0 0 Total Hours This Class: 720 Hours of Calm This Class: 0 Percent of All Data This Class: 4.37 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 IPage 7 of 21 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 19 to 24 Above 24 Total N 9 107 135 39 3 291 NNE 32 132 87 18 1 270 NE 37 129 116 50 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 Page 8 of 21 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 ito 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 20 98 57 6 181 NNE 43 81 35 2 161 NE 35 94 41 6 178 ENE 50 122 29 10 211 E 36 109 40 2 187 ESE 26 117 46 6 195 SE 19 111 136 18 286 SSE 20 95 116 33 265 S 22 84 144 43 294 SSW 22 72 99 25 227 SW 23 84 57 10 176 WSW 37 86 44 4 171 W 30 156 123 12 325 WNW 24 195 233 41 495 NW 20 133 247 84 484 NNW 25 145 217 38 426 VAR 0 0 0 0 0 Total Hours This Class: 4269 Hours of Calm This Class: 7 Percent of All Data This Class: 25.92 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE APPENDIX B Revision Page 9 of121 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 Ito 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 30 62 3 95 NNE 37 54 0 91 NE 29 29 0 58 ENE 32 28 0 60 E 32 59 5 96 ESE 25 97 11 133 SE 22 83 19 124 SSE 16 122 12 150 S 24 93 31 151 SSW 27 67 14 108 SW 27 52 7 86 WSW 52 68 8 128 W 51 91 14 156 WNW 28 68 9 105 NW 36 67 12 115 NNW 30 119 29 178 VAR 0 0 0 0 Total Hours This Class: 1847 Hours of Calm This Class: 13 Percent of All Data This Class: 11.21 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 Page 10 of 21 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 Ito 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT TITLE: APPENDIX B ODCM-APP-B Revision 1 Page 11 of 21 -

II Table 8 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 12 of 21 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 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 IPage 13 of 21 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 Ito 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 2 10 1 0 14 NNE I 1 0 0 3 NE 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT 0DCM-APP-B TITLE: APPENDIX B Revision 1 1Page 14 of 21 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 Ito 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 15 of 21 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 3 9 26 25 13 2 78 NNE 2 12 14 14 8 2 52 NE 1 7 9 8 2 0 27 ENE 0 5 12 6 1 0 24 E 0 13 19 1 2 0 35 ESE 0 13 25 11 1 1 51 SE 2 17 12 8 4 0 43 SSE 0 26 38 19 10 2 95 S 0 15 23 13 7 4 62 SSW 0 28 33 23 11 2 97 SW 0 20 24 17 4 0 65 WSW 3 17 27 14 3 1 65 W 3 10 20 14 8 3 58 WNW 3 10 16 27 18 9 83 NW 2 8 22 38 26 10 106 NNW 2 3 16 42 19 8 90 VAR 0 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 l/plr

MONTICELLO NUCLEAR GENERATING PLANT 0DCM-APP-B TITLE: APPENDIX B Revision 1 1Page 16 of 21 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 ito 3 4 to 7 8 to 12 13 to 18 19 to 24 Above 24 Total N 11 51 95 181 130 82 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 17 of 21 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT 4TITLE APPENDIX B I ODCM-APP-B Revision 1 Page 18 of 21 II-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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 19 of 21 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 Ito 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 20 of 21 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-B TITLE: APPENDIX B Revision 1 1Page 21 of 21 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 I/plr

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-C TITLE: APPENDIX C Revision 0 1Page 1 of 5 OFFSITE DOSE CALCULATION MANUAL - TABLE OF CONTENTS SECTION PAGE 1.0 RECORD O F REVISION ............................................... 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:

I FOR ADMINISTRATIVE USE ONLY 3087 (DOCUMENT CHANGE, HOLD, AND COMMENT FORM) incorporated:

IResp Supv: CHEM lAssoc Ref: CHEM-I SR: N Freq: 2 yrs IARMS: ODCM-APP-C Doc Type: 7030 lAdmin Initials: Date:

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MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-C TITLE: APPENDIX C Revision 0 1Page 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 TITLE: APPENDIX C ODCM-APP-C Revision 0 Page 3 of 5

=1 I

Table 1 Parameters for Cow and Goat Milk Pathways Reference in Parameter Value Reg. Guide 1.109 Rev. 1 QF (kg/day) 50 (cow) Table E-3 6 (goat) Table E-3 tf (seconds) 1.73 X 10 5 (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/m 2 ) .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

MONTICELLO NUCLEAR GENERATING PLANT ODCM-APP-C TITLE: APPENDIX C Revision 0 1Page 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 1Page 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 1Page 1 of 1 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 December 12, 1983 Change in milk sampling locations and remove formula for converting giCi/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:

FOR ADMINISTRATIVE USE ONLY 3087 (DOCUMENT CHANGE, HOLD, AND COMMENT FORM) incorporated:

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

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QF-0212, Rev. 1 (FP-SC-RSI-04)

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