ML17334B401

DC Cook Units 1 & 2 Annual Environ Operating Rept 1990. W/ 910430 Ltr

ML17334B401
Person / Time
Site:	Cook
Issue date:	12/31/1990
From:	Fitzpatrick E INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
AEP:NRC:0806K, AEP:NRC:806K, NUDOCS 9105030255
Download: ML17334B401 (223)

Text

ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)DOCKET 05000315 05000316 ACCESSION NBR:9105030255 DOC.DATE: 90/12/31 NOTARIZED:

NO FACIL:50-315 Donald C.Cook Nuclear Power Plant, Unit 1, Indiana&50-316,Donald C.Cook Nuclear Power Plant, Unit 2, Indiana 6 AUTH.NAME'UTHOR AFFILIATION FITZPATRICK,E.

Indiana Michigan Power Co.(formerly Indiana 6 Michigan Ele RECIP.NAME

" RECIPIENT AFFILIATION p'I 6~.I

SUBJECT:

"Annual Environ Operaing Rept for 1990 W/910430 tr.DISTRIBUTION CODE: IE25D COPIES RECEIVED:LTR J E SIZE: TITLE: Environmental Monitoring Rept (per Tech Specs)NOTES D RECIPIENT ID CODE/NAME PD3-1 LA COLBURN,T.

INTERNAL: AEOD J3S TPAB RH IiL RGN3 FILE 02 EXTERNAL EGGG S IMPSON F F COPIES LTTR ENCL 3 3 1 1 1 1 1 1 1 1 2 2 RECIPIENT ID CODE/NAME PD3-1 PD NRR/DREP/PRPB11 RGN3 DRSS/RPB NRC PDR COPIES LTTR ENCL 1 1 2 2 1 1 D D D NOTE TO ALL"RIDS" RECIPIENTS:

D D PLEASE HELP US TO REDUCE WASTE!CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT.20079)TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISIS FOR DOCUMENTS YOU DON'T NEED!TOTAL NUMBER OF COPIES REQUIRED: LTTR 14 ENCL 14 Cl Indiana Michigan Power Company~P.O.Box 16631~Columbus, OH 43216 AEP:NRC:0806K Donald C.Cook Nuclear Plant Units 1 and 2 Docket Nos.50-315 and 50-316 License Nos.DPR-58 and DPR-74 ANNUAL ENVIRONMENTAL OPERATING REPORT-1990 U.S.Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.20555 ATTN: Dr.T.E.Murley April 30, l991

Dear Dr.Murley:

Please find attached to this letter the Annual Environmental Operating Report for the Donald C.Cook Nuclear Plant for the year 1990.This report was prepared in accordance with Appendix A, Section 6.9.1.6 and Appendix B, Part II, Section 5.4.1 of the Donald C.Cook Nuclear Plant Technical Specification.

This document has been prepared following Corporate Procedures that incorporate a reasonable set of controls to ensure its accuracy and completeness prior to signature by the undersigned.

Very truly yours, P E.E.Fitzpa ic Vice President edg Attachment cc: D.H.Williams A.A.Blind-Bridgman NFEM Section Chief J.R.Padgett G.Charnoff A.B.Davis, Region III NRC Resident Inspector-Bridgman 9105030255 901231!PDR ADOCK 05000315 RPDR Ar nnua nvironmenta era in e ort January 1, Through December 31, 1990 indiana&Michigan Electric Company Bridgman, Michigan Docket Nos.50-315&50-316 License Nos.DPR-58&DPR-74 , gyp5030~>5

TABLE OF CO ENTS~Pa e I.Introduction II.Changes to the Environmental Technical Specifications III.Non-Radiological Environmental Operating Report A.l A.2 A.3 A.4 A.5 B.Plant Design and Operation NPDES Permit and State Certification Reporting Environmental Protection Plan Potentially Significant Unreviewed Environmental Issues NPDES Permit Environmental Monitoring-Herbicide Applications Macrofouler Monitoring and Treatment~~IV.Solid Radioactive Waste Treatment, System 2 V.Radiological Environmental Monitoring Program (REMP)2 A.l A.2 B.Changes to the REMP Radiological Impact of Donald C.Cook Nuclear Plant Operations Land Use Census and Well Report VI.Conclusion

~gen~di~LIST 0 PPENDICES Q t~e IV NPDES Non-Routine Report-1990 NPDES Permits-1990 Herbicide Application Report-1990 Macrofouler Monitoring Program-1990 1990 Annual Report: Radiological Environmental Monitoring Program Radiological Environmental Monitoring Program Summary-1990.D Data Tables Analytical Procedures Synopsis Summary of EPA Interlaboratory Comparisons REMP Sampling and Analytical Exceptions Land Use Surveys Summary of the Preoperational Radiological Monitoring Program.H Summary of the Blind Duplicate Sample Program Summary of th'e Spike and Blank Sample Program TLD Quality Control Program I.INTRODUCTION Technical Specification Section 6.9.1.6 and Appendix B, Part II, Section 5.4.1 require that an annual report be submitted to the Nuclear Regulatory Commission which details the results and findings of ongoing environmental radiological and non-radiological surveillance programs.This report serves to fulfill these requirements and represents the Annual Environmental Operating Report for Units 1 and 2 of the Donald C.Cook Nuclear Plant for the operating period from January 1, 1990 through December 31, 1990.During 1990, based on the monthly operating reports for Unit 1 and Unit 2, the annual gross electrical generation, average unit service factors and capacity factors were: Parameter Unit 1 Unit 2 Gross Electrical Generation (MwH)Unit Service Factor (8)Unit Capacity Factor-MDC*Net (8)6,559,000 79.2 70.5 4,990,730 55.4 51.8*Maximum Dependable Capacity II.CHANGES TO THE ENVIRONMENTAL TECHNICAL SPECIFICATIONS There were no Technical Specification changes in 1990.III.NON-RADIOLOGICAL ENVIRONME AL OPERATING REPORT A.l Plant Design and Operation During 1990 no noncompliance with the Environmental Protection Plan occurred, nor were there any changes in station design, operations, tests or experiments which involved a potentially significant unreviewed environmental issue.No construction activities during the reporting period occurred which required an environmental assessment of the activity.A.2 Notifications Related to the NPDES and State Certifications Notifications made to the Michigan Department of Natural Resources regarding the NPDES Permit are listed under Nonroutine Reports in Appendix I.A.3 Environmental Protection Plan There were no Environmental Protection Plan noncompliances in 1990.

A.4 Potentially Significant Unreviewed Environmental Issues There were no changes in station design, operations, tests or experiments which involved a potentially significant unreviewed environmental issue.No construction activities during the reporting period occurred which required an environmental assessment of the activity.A.5 NPDES Permit A new permit was issued on September 20, 1990.Also included are letters from the Michigan Department of Natural Resources authorizing the use of Clam-trol for Zebra Mussel control, as well as authorization to continuously discharge chlorine.These documents are in Appendix II.B.Environmental Monitoring

-Herbicide Application Technical Specifications Appendix B, Subsection 5.4.1, states that the Annual Environmental Operating Report shall include: summaries and analyses of the results of the environmental protection activities required by Subsection 4.2 of this Environmental Protection Plan for the report period, including a comparison with preoperational studies, operational controls (as appropriate), and previous nonradiological environmental monitoring reports, and an assessment of the observed impacts of the plant operation on the environment.

Herbicide applications are the only activity to be monitored per Subsection 4.2, and the applications are discussed in Appendix III.There were no preoperational herbicide studies to which comparisons could be made.Herbicide applications are controlled by plant procedure 12THP6020.ENV.104.

The observed impacts are also discusse'd in Appendix III.C.Macrofouler Monitoring and Treatment Macrofouler studies and activities during 1990, are discussed in Appendix IV.IV.SOLID RADIO C IVE WASTE TR ME SYS EM There were no changes in the Solid Radioactive Waste Treatment System in 1990.V.DIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REMP The Radiological Environmental Monitoring Program is designed to serve the following purposes (Appendix V):

l.Establish baseline radiation levels in the environment prior to the Plant's operation.

2.Monitor potential critical pathways of radioactive effluent to man.3.Determine radiological impact on the total environment caused by the operation of the Donald C.Cook Nuclear Plant.A.l, Changes to the REMP The second quarter OFS-6 Thermoluminescent dosimetry (TLD)sample station was located on power pole¹B426-70.While collecting TLD's for the second quarter, it was found that the entire pole had been removed.The TLD sample station was relocated to pole¹B426-1, 4/10 of a mile east of Holden Road on Snow Road.A.2 Radiological Impact of Donald C.Cook Nuclear Plant Operations This report summarizes the collection and analysis of various environmental sample media in 1990 for the Radiological Environmental Monitoring Program for the Donald C.Cook Nuclear Plant.The various analyses of most sample media suggest that there was no discernable impact of the nuclear plant on the environment.

The analysis of air particulate filters, charcoal cartridges, direct radiation by thermoluminescent dosimeters, fish, water, milk and sediments from Lake Michigan, drinking water, and food products, either did not detect any radioactivity or measured only naturally occurring radionuclides at normal background levels.Tritium, measured at low levels in on-site wells, appears to be the only radionuclide attributable to the plant operations.

However, the associated ground water does not provide a direct dose pathway to man.B.Land Use Census and Well Report The Land Use Census is performed to ensure that significant changes in the areas in the immediate vicinity of the plant site are identified.

Any identified changes are evaluated to determine whether modification must be made to the REMP or other related programs.No such changes were identified during the 1990 Land Use Census.A residential well survey was performed in 1990 to monitor the groundwater aquifer north and south of the Cook Nuclear Plant for radionuclides and to identify wells in the I-vicinity of the plant used to supply water for human consumption.

Communities to the east of the plant were not involved in the well census due to the fact that they are located greater than a mile from the plant center and are upstream of the prevailing east to west groundwater flow.VI.CONCLUSION Based upon the results of the radiological environmental monitoring program and the radioactive effluent release reports for the 1990 reporting year, it can be concluded that there were noadverse affects to the environment or to the general public due to the operation of the Donald C.Cook Nuclear Plant.

APPENDIX I NPDES NON-ROUTINE REPORT 1990

NON-ROUTINE REPORTS E47RN>DATE DESCRIPTION.Tanuary 31, 1990 Sixtv-three floor drains and thirteen equipment drains previously believed to be routed to the Turbine Room Sump (Outfall 00D)were determined to be routed to the north storm drain outfall (Outfall SOl).October 15, 1990 October 30, 1990 Clam-Trol (a proprietary molluscicide) was released to Lake Michigan in detectable concentrations during treatment of various Cook Plant water systems for zebra mussels.Five unmonitored (for pH)discharges from the Turbine Room Sump to the Absorption Pond occurred between 0000 and 0345 hours0.00399 days <br />0.0958 hours <br />5.704365e-4 weeks <br />1.312725e-4 months <br /> due to a loss of flow to the TRS sample line caused by blockage downstream.

APPENDIX II NPDES PERMITS 1990

NATURAL RESOURCES COMMISSION THOMAS J, ANDERSON MARLENE J, FLUHARTY Go.GUYER K MER E.MATTSON 0, T MYERS RAY D POUPORE STATE OF, MICHIGAN JAMES J.8LANCHARD.

Governor DEPARTMENT OF NATURAL RESOURCES STEVENS T.MASON BUILDING P.o<BOX 30029 LANSING.Ml 98909 DAVID F.HALES.&reaor@~m<fgENTAI-PAIRS October 23, 1990 CERTIFIED MAIL Indiana Michigan Power Company P.O.Box 60 Fort Wayne, Indiana 46801 Gentlemen:

SUBJECT:

NPDES Permit No.MI0005827 Cook Plant, Bridgman, Michigan Your National Pollutant Discharge Elimination System (NPDES)Permit has been processed in accordance with appropriate state and federal regulations.

It contains the requirements necessary for you to comply with state and federal water pollution control laws.REVIEW THE PERMIT EFFLUENT LIMITS AND COMPLIANCE SCHEDULES CAREFULLY.

These are sub)ect to the criminal and civil enforcement provisions of both state and federal law.Permit violations are audited by the Michigan Department of Natural Resources and the United States Environmental Protection Agency and may appear in.a published quarterly noncompliance report made available to agencies and the public.Your monitoring and reporting responsibilities must be complied with in accordance with this permit.If applicable, Discharge Monitoring Report forms will be transmitted to you in the near future.These reports are'to be submitted monthly or otherwise as required by your NPDES permit.Any reports, notifications, or questions regarding the attached permit or NPDES program should be directed to the following address: Fred Morley, District Supervisor 621 North Tenth Street P.O.Box 355 Plainwell, Michigan 49080 Telephone:

(616)685-9886 I026 I 99 wt aI~

Indiana Michigan Power Company Page 2 October 23, 1990 NOTE: All references within this permit made to the Water Quality Division or Chief of the Water Quality Division are to refer to the Surface Water Quality Division or Chief.of the Surface Water Quality Division, respectively.

Sincerely,)~g h (I William E.McCracken, P.E.Chief, Permits Section Surface Water Quality Division 517-373-8088

Enclosure:

Permit cc: EPA-Region V (2)208 Agency-Southwest Michigan Regional Planning Commission Planning and Special Programs Section, SWQD Mr.Fred Morley-Plainwell District, SWQD (2)Mr.Paul Blakeslee, Regional Supervisor, Region III, SWQD Compliance and Enforcement, SWQD Data Entry, SWQD Point Source Studies (Grand Rapids District Office), SWQD Files PERMIT NO.MI0005827 MICHIGAN WATER RESOURCES COMMISSION AUTHORIZATION

'TO DISCHARGE UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM n compliance with the provisions of the Federal Water Pollution Control Act, as amended, (33 U.S.C.1251 et seq;the"Act"), and the Michigan Water Resources Commission Act, as amended, (Act 245, Public Acts of 1929, as amended, the"Michigan Act"), Indiana Michigan Power Company P.O.Box 60 Fort Wayne, Indiana 46801 is authorized to discharge from a facility located at.One Cook Place Bridgman, Michigan 49106 designated as IN MI Power Co-Cook Plt to the receiving water named the Lake Michigan in accordance with effluent limitations, monitoring requirements and other conditions set forth in this permit.This permit takes effect on January 1, 1991.Any person who feels aggrieved, by this permit may file a sworn petition with the Executive Secretary of the Michigan Water Resources Commission, setting forth the conditions of the permit which are being challenged and specifying the grounds for the challenge.

The Commission may ect any petition filed more than 60 days after issuance as being untimely.Upon nting of a.contested case to the applicant, the Commission shall review the ermit to determine which contested term shall be stayed until the Commission takes its final action.If a contested condition is a requirement placed on wastewater covered by a new or increased discharge authorization, such increased discharge , authorization shall be stayed until the Commission takes final action.All other conditions of the permit remain in full effect.If the contested condition is a modification of a previous permit condition and the Commission determines the contested condition shall be stayed, then such previous condition remains in effect until the Commission takes final action.During the course of any administrative proceeding brought by a person other than the applicant, the conditions of this permit will remain in effect, unless the Commission determines otherwise.

This permit and the authorization to discharge shall expire at midnight October 1, 1994.In order to receive authorization to discharge beyond the date of expiration, the permittee shall submit such information and forms as are required by the Michigan Water Resources Commission to the Permits Section of the Surface Water Quality Division no later than'180 days prior to the date of expiration.

This permit is based on an application submitted on March 6, 1990.On its effective date this permit shall supersede NPDES Permit No.MI0005827, expiring August 31, 1990.Issued this 20th day of Se tember, 1990, by the Michigan Water Resources Commission.

aul D.Zu er Executive Secretary PERMIT NO.MI0005827 Page 2 of 19 PART I A.EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Final Effluent Limitations, Outfalls 001 and 002 (condenser cooling water and low volume wastes)During the period beginning on the effective date of this permit and lasting until the date of expiration, the permittee is authorized to discharge one billion four hundred seventeen million (1,417,000,000) gallons per day*of noncontact cooling water and miscellaneous low volume wastewater from.outfal'01 to Lake Michigan;and one billion eight hundred ninety mil'on (1,890,000,000) gallons per day*of noncontact cooling water and miscellaneous low volume wastewater from outfall 002 to Lake Michigan.Such discharges shall be limited and monitored by the permittee as specified below: Effluent Characteristic Dischar e Limitations 1bs dav Other Limitations Monthly Daily Monthly Daily~aveea e maximum~aveea e Aax'imam Monitorin Requirements Measurement Sample Flow (MGD)(report)(report)Daily Report Tota Daily Plow Temperature

('F)Intake Discharge Heat Addition (BTU/Hr)(report)Daily (report)Daily 15.5 x 10 Daily 9 Read Rea Calculation Total Residual Chlorine (TRC)**Continuous Use Intermittent Use 0.036 mg/1 5x Weekly Grab 0.2 mg/1 Sx Weekly Grab TRC Discharge Time (report)5x Weekly Report Disc'ime Outfall Observation Daily Visual Daily Minimum Daily Maximum pH (Standard Units)6.5 9.0 Weekly Grab*The flow is not to be considered as a limitation on either the quantity or rate over time of discharge.

PERMIT NO.MI0005827 Page 3 of 19 PART I tion A.l.(continued)

~~**The daily maximum value for TRC shall be reported as the average of a minimum of th'ree grab samples taken during the the time of chlorination.

The samples must.be equally spaced and no single sample may exceed 0.3 mg/1.TRC monitoring is only required during periods of chlorination.

The term continuous use shall mean the application of chlorine greater than 160 minutes per day.The term intermittent use shall mean the application of chlorine 160 minutes per day or less.The permittee shall enter a zero on the Discharge Monitoring Report for the TRC mode not being used.The permittee is authorized to substitute bromine for chlorine as a biocide.If bromine is used in lieu of chlorine, the same effluent limitations and monitoring requirements specified for chlorine will also be applicable for bromine.The permittee shall use the amperometric titration method to determine the total residual oxidant.Prior to the use of any product containing bromine, the permittee shall notify the Plainwell District Supervisor of the Surface Water Quality Division of the product to be used, and the intended schedule of application.

The permittee shall notify the District Supervisor of any changes to the application schedule.The permittee may use dechlorination techniques to achieve the applicable limitations using sodium sulfite or other dechlorination agents as approved by the Chief of the Surface Water Quality Division as dechlorination agents.The quantity of reagent used shall be the stoichiometric amount needed for dechlorination of applied chlorine.The permittee shall report monthly the quantity of each dechlorination reagent used per day.a.The receiving stream shall contain no unnatural turbidity, color, oil film>floating solids, foams, settleable solids, or deposits as a result of this discharge.

b.Samples, measurements, and observations taken in compliance with the monitor'ng requirements above shall be taken prior to discharge to Lake Michigan.c.Any unusual characteristics of the discharge (i.e., unnatural turbidity, color, oil film, floating solids, foams, settleable solids, or deposits)shall be reported immediately to.the Plainwell District Supervisor of the Surface Water Quality Division followed with a written report within 5 days detailing the findings of the investigation and the steps taken to correct the condition.

d.In the event the permittee shall require the discharge of water treatment additives in addition to any previously approved by the Plainwell District Supervisor of the Surface Water Quality Division, the permittee shall notify the Plainwell District Supervisor.

Written approval from the Plainwell District Supervisor to discharge such additives at specified levels shall be obtained prior to discharge by the permittee.

The permit will be modified in accordance with the requirements of Part II.B.4.if a constituent of the additive or additives requires limiting.e.The term noncontact cooling water shall mean water used for cooling which does not come into direct contact with any raw material, intermediate product,-product, waste product, or finished product.

PERMIT NO.MI0005827 Page 4 of 19 PART I Section A.Final Effluent Limitations Outfalls OOA and OOB (steam generator blowdown)During the period beginning on the effective date of this permit and lasting until the date of expiration, the permittee is authorized to discharge seven hundred twelve thousand (712,000)gallons per day*of low volume wastewater consisting of steam generator blowdown from outfall OOA through outfalls 001 and 002 to Lake Michigan;and seven hundred thirty seven thousand (73'7,000) gallons per day of low volume wastewater consisting of steam generator blowdown.rom outfall OOB through outfalls 001 and 002 to Lake Michigan.Such discharges shall be limited and monitored by the permittee as specified below: Effluent Characteristic Dischar e Limitations lbs/dav Other Limitations Monthly Dailv Monthly Daily A~veva e Naximum averaae'Maximum Measurement Freauencv Sample~~ve Monitorin Re uirements Flow (MGD)Total Suspended Solids (report)(report)30 mg/1 100 mg/1 Daily Per Occurrence Weekly Per Occurrence Report Total Daily Flow Grab*The flow is not to be considered as a limitation on either the quantity or rate over time of discharge.

a.Samples, measurements, and observations taken in compliance with the monitoring requirements above shall be taken at outfalls OOA and OOB prior to discharge to outfall 001 or 002.

PERMZT NO.it10005827 Page 5 of 19 PART I tion A.3.Final Effluent Limitations, Outfall OOC (heating boiler blowdown)During the period beginning on the effective date of this permit and lasting until the date of expiration, the permittee is authorized to discharge nineteen thousand (19,000)gallons per day*of low volume wastewater consisting of heating boiler blowdown from outfall OOC through outfalls 001 and 002 to Lake Mi.chigan.

Such discharge shall be limited and monitored by the permittee as specified below: Effluent Characteristic Dischar e Limitations lbs/dav Other Limitations Monthly Daily Monthly Daily~Avera e., Maximum~Avera e Maximum Aeasurement Freouenc Sample TWle Aonitorin Re uirements Flow (NGD)(report)(report)Daily Per Occurrence Report Total Daily Flow Total Suspended Solids 30 mg/1 100 mg/1 Daily Per Occurrence**

Grab The flow is not considered as a limitation on either the quantity or rate over ime of discharge.

• • Total Suspended Solids are to be monitored.once per occurrence or weekly if the heating boiler is operated continuously for periods greater than one week.a.Samples, measurements, and observations taken in compliance with the monitoring requirements above shall be taken at outfall OOC prior to discharge to outfall 001 or 002.

PERMIT NO.MI0005827 Page 6 of 19 Section A.PART I4.Final Effluent Limitations, Outfall OOF (prefilter backwash)During the period beginning on the date of issuance and lasting until the date of expiration, the permittee is authorized to discharge five hundred eighty three thousand (583,000)gallons per"day*of low volume wastewater consisting of prefilter backwash from outfall OOF through outfalls 001 and 002 to Lake Michigan.Such discharge shall be limited and monitored by the permittee as specified below: Effluent Characteristic Dischar e Limitations 1bs/dav Other Limitations Monthly Daily Monthly Dai'~Avexa e Maximum~Aveea e Maximum Monitorin Requirements Measurement Sample Flow (MGD)(report)(report)Daily Per Report Total Occurrence Dai'F'ow Total Suspended Solids 30 mg/1 100 mg/1 Daily Per Grab Occurrence Oil and Grease 15 mg/1 20 mg/1 2x Monthly Grab*The flow is not to be considered as a limitation on either the quantity or rate over time of discharge.

a.Samples, measurements, and observations taken in compliance with the monitoring requirements above shall be taken prior to discharge to outfall 001 or 002.

PERMIT NO.MI0005827 Page 7 of 19 PART I tion A.5.Final Effluent Limitations, Outfalls 001S, 002S, 003S and 004S (stormwater runoff)During the period beginning on the effective date of this permit and lasting until the date of expiration, the permittee is authorized to discharge an unspecified amount of stormwater runoff from outfalls 001S, 002S, 003S, and'04S to Lake Michigan.Such discharges shall be limited and monitored by the permittee as specified below: Effluent Characteristic Dischar e Limitations lbs/dav Other Limitations Monthly Daily Monthly Daily~Av era e, Maximum~Av eve e Maximum Nonitorin Requirements Neasurement Sample Retained Self-Monitorin Re uirements (See Part I.S.2.b.)Outfall Observation Durin Discharge Nonthly*Visual Total Copper**(report)Quarterly Grab Total Zinc**(report)Quarterly Grab Nonitoring is not required at this time for outfalls 003S and 004S due to the inaccessability of the outfalls.**Monitoring for total copper and total zinc shall be conducted on a quarterly basis for outfall 001S.The results of such monitoring shall be submitted to the Chief of the Surface Water Quality Division on or before March 1 of each year.a.The receiving stream shall contain no unnatural turbidity, color, oil film, floating solids, foams, settleable solids, or deposits as a result oi this discharge.

b.Samples, measurements, and observations taken in compliance with the monitoring requirements above shall be taken prior to discharge to Lake Nichigan.

PERMIT NO.MI0005827 Page 8 of 19 Section A.PART I6.S ecial Condition-Deicing Discharge Authorization The permittee is authorized to discharge a portion of the flow from outfall 001 or outfall 002 through intake structure outfall 003 to prevent.ice buildup.The permittee is not required to provide any additional monitoring of this discharge because the effluent limitations and monitoring requirements specified for outfalls 001 and 002 will determine compliance with applicable

~ater quality standar'ds.

7.S ecial Condition-Short Term Waste Characterization Study As a condition of this permit, the permittee shall monitor the discharge from outfalls 001 and 002 for the constituents, at the frequency, and for the duration specified below.This monitoring is designed to determine whether these constituents are discharged in significant quantities.

The results of the analysis of such monitoring shall be submitted to the Plai..well District Supervisor of the Surface Water Quality Division in accordance with Part I.C.2., Schedule of Compliance.

If, upon review of the analysis, it is'determined that any of the materials or constituents require limiting to protect the receiving waters in accordance with applicable water quality standards, the permit may then be modified after public notice and Commission approval of the recommended permit modification in accordance with Part II.B.4.CONSTITUENT SAMPLE SAMPLE DESIRED SA PLE TYPE:REQUENCY DURATION DETECTION LEVEL Hexavalent Chromium Grab Weekly.Six Weeks 5 ug/1 8.S ecial Condition-PCB Prohibition Effective upon the date of issuance of this permit, the permittee shall not discharge any polychlorinated biphenyls to the receiving waters of the State of Michigan as a result of plant operations other than due to the presence of such compounds in the intake water.9.S ecial Condition-Intake Screen Backwash During the period beginning on the effective date of this permit and lasting until the expiration date of this permit, the permittee is authorized to discharge intake screen backwash to Lake Michigan.The permittee shall collect and remove debris accumulated on intake trash bars and dispose of such material on land in an appropriate manner.

PERMIT NO.MI0005827 Page 9 of 19 PART I tion A.10.S ecial Condition-Reopener Clause'Zhis permit may be modified or, alternatively, revoked and reissued to comply with any applicable standard(s) or limitation(s) promulgated under Section 301(b)(2)(c)(d), 304(b)(2)and 307(a)(2)of the Act, if the effluent standard(s) or limitation(s) so promulgated:

a.is(are)either different in condition or more stringent than any effluent limitation in the permit;or b.control(s) any pollutant not limited in the permit.11.S ecial Condition-Notification Requirement The permittee shall notify the Plainwell District Supervisor of the Surface Water Quality Division, in writing, within 10 days of knowing, or having reason to believe, that any activity or change has occurred or will occur which would result in the discharge of: a.Detectable levels*of chemicals on the current Michigan Critical Materials Register or priority pollutants or hazardous substances set forth in 40 CFR 122.21, Appendix D, which were not acknowledged in the application**

or listed in the application at less than detectable levels.b.Detectable levels*of any other chemical not listed in the application or listed at less than detection, for which the application specifically requested information.

c.Any chemical at levels greater than five times the average level reported in the application**.

Any other monitoring results obtained as a requirement of this permit shall be reported in accordance with the schedule of compliance.

• The detectable level shall be defined as the Method'Detection Limit (MDL)as given in Appendix B to Part 136, Federal Register, Vol.49, No.209, October 26, 1984, pp.43430-31.**The application submitted on March 6, 1990.

PERMIT NO.MI0005827 Page 10 of 19 PART I Section A.12.Dischar e to the Groundwaters This site is a known source of groundwater pollution.

The reissuance of this permit does not authorize venting of contaminated groundwaters,to the surface waters, nor does it constitute a release of liability for any groundwater contamination at or around the site.The State reserves its rights to seek remedies to abate any groundwater contamination.

13.S ecial Condition-Temperature Modification The Michigan Water Resources Commission is considering the necessity of incorporating temperature limitations in this permit to assure that the requirements of Rule 82(1)of the Michigan Water Quality Standards are met.Therefore, when consideration of this issue has been completed, the Commission may modify this permit in accordance with Part II.B.4.to add appropriate temperature 1'mitations or requirements.

PERMIT NO.MI0005827 Page 11 of 19 PART I MONITORING AND REPORTING 1.Representative Sampling Samples and measurements taken as required herein shall be representative of the volume and nature of the monitored discharge.

2.Re ortin: P g 4 a.DMR Submittal Re uirements-The permittee shall submit Discharge Monitoring Report (DMR)forms to the Michigan Department of Natural Resources, Surface Water Quality Division, Data Entry Unit, P.O.Box 30028, Lansing, Michigan, 48909, for each calendar month of the authorized discharge period(s).

The DMRs shall be postmarked no later than the 10th day of the month following each month of the authorized discharge period(s).

I b.Retained Self-Monitorin Re uirements (outfalls 001S.002S, 003S, 6 004S),The permittee shall maintain a year-to-date log of retained self-monitoring results and provide such log for inspection to the staff of the Surface Water Quality Division, Michigan Department of Natural Resources upon request.Retained self-monitoring results are public information and shall be promptly provided'to the public upon request.P.The permitte'e shall certify, in writing, to the Plainwell District Supervisor of the Surface Water Quality Division, Department of Natural Resources in accordance with the Schedule of Compliance, Part I.C.3., that;(2)(3)all retained self-monitoring requirements have been complied with and a year-to-date log has been maintained, the flow rate(s)(if part of retained self-monitoring results)from all outfalls have been substantially the same as the flow rate(s)authorized by this permit, or if'he flow rate(s)(if part of retained self-monitor'ng results)is (are)substantially different from the flow rate(s)authorized by this permit and the permittee shall provide reaso'ns for the difference in flow rates.If, for any reason, the'permittee does not comply with or'will be unable to comply with any requirements specified in Part I.A.of this permit, the permittee shall provide the Plainwell District Supervisor of the Surface Water Quality Division with the following information, in writing, within five (5)days of becoming aware of such noncompliance:

(1)A description of the discharge and cause of noncompliance; and (2)The period of noncompliance.

including exact dates and times;or, if not corrected, the anticipated time the noncompliance is expected to continue, and the steps taken to reduce, eliminate and prevent recurrence of the noncomplying discharge.

PERMIT NO.MI0005827 Page 12 of 19 Section B.3.Definitions PART Ia.The monthly average discharge is defined as the total discharge by weight, or concentration if specified, during the reporting month divided by the number of days in the reporting month that, the discharge from the production or commercial facility occurred.If the pollutant concentration in any sample is less than the detection limit, regard that value as zero when calculating monthly average concentration.

When less than daily sampling.occurs, the monthly average discharge shall be determined by the'summation of the measured daily discharges by weight, or concentration if specified, divided by the number of days during the reporting month when the samples were collected, analyzed and reported.b.The daily maximum discharge means the total discharge by weight, or concentration if specified, during any calendar day.c.The Regional Administrator is defined as the Region V Administrator, U.S.EPA, located at 230 South

Dearborn,

13th Floor, Chicago, Illinois, 60604.d.The Executive Secretary of the Michigan Water Resources Commission is located in the KNAPP'S OFFICE CENTRE.The mailing address is P.O.Box 30028, Lansing, Michigan, 48909.'.The Chief of the Surface Water Quality Division's mailing address is P.O.Box 30028, Lansing, Michigan, 48909.4.Test Procedures Test procedures for the analysis-of pollutants shall conform to regulations published pursuant to Section 304(h)of the Act, under which such procedures may be required.5.Recording Results For each measurement or sample taken pursuant to the requirements of this permit, the permittee shall record the following information:

a.The exact place, date, and time of measurement or sampling;b.The person(s)who performed the measurement or sample collection; c.The dates the analyses were performed; d.The person(s)who performed the analyses;e.The analytical techniques or methods used;f.The date of and person responsible for equipment calibration; and g.The results of all required analyses.

PERMIT NO.MI0005827 Page 13 of 19 PART I ction B.6.Additional Monitoring by Permittee If the permittee monitors any pollutant't the location(s) designated herein more frequently than required by this permit, using approved analytical methods as specified above, the results of such monitoring shall be included in the calculation and reporting of the values required in the Discharge Monitoring Report.Such increased frequency shall also be indicated.

7.Records Retention All records and information resulting from the monitoring activities required by this permit including all records of analyses performed and calibration and maintenance of instrumentation and recordings from continuous monitoring instrumentation shall be retained for a minimum of three (3)years, or longer if requested by the Regional Administrator or the Michigan Water Resources Commission..

PERMIT NO.MI0005827 Page 14 of 19 PART I C.SCHEDULE OF COMPLIANCE 1.The permittee shall continue to operate the installed facilities to achieve the effluent limitations specified for outfall(s) 001, 002 and 003.2.The permittee shall achieve compliance with the Short Term Waste Characterization Study requirements specified in Part I.A.7ep in accordance with the following schedule.All submittals shall be to the Plainwell District Supervisor of the Surface Water Quality Division.a.On or before Februar 1, 1991, the permittee shall implement the study.monitoring as required.c.On or before June 1, 1991, the permittee shall submit the analytical results of such monitoring.

3.On or before Janua 10th of each ear, during the effectiveness of this permit, the permittee shall submit the retained self-monitoring written certification as required in the Monitoring and Reporting Section, Part I.B.2.The certification shall be submitted to the Plainwell District Supervisor of the Surface Water Quality Division, Michigan Department of Natural Resources.

4.Rea'pplication If the discharges authorized by this permit are expected to continue beyond the expiration date of this permit, the permittee is required to submit an application for'reissuance to the Chief of the Permits Section of the Surface Water Quality 5.Written Report Required Within 14 days following each date specified in Part I.Cep Schedule of Compliance.

the permittee shall submit written notification to the plainwell District Supervisor of the Surface Water Quality Division regarding its compliance or noncompliance with each schedule requirement.

If a requirement was not met', the permittee's written notification shall include an explanation of the failure to meet the requirement, actions taken or planned by the permittee to correct the situation, and an estimate of when the requirement will be met.If the requirement involves submittal of a written report and the written report was submitted in accordance with the schedule date, separate written notification is not required.

PERMIT NO.MI0005827 Page 15 of 19 PART II MANAGEMENT REQUIREMENTS 1.Duty to Comply All discharges authorized herein shall be consistent with the terms and conditions of this permit.The discharge of any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall constitute a violation of the permit.It is the duty of the permittee to comply with all the terms and conditions of this permit.Any noncompliance with the Effluent Limitations, Special Conditions, or terms of this permit constitutes a violation of Public Acts 245, of 1929, as amended, and/or PL 92-500, as amended, and constitutes grounds for enforcement action;for permit termination, revocation and reissuance, or modification; or denial of an application for permit renewal.2.Change of Conditions Any anticipated facility expansion, production increases, or process modification which will result in new, different, or increased discharges of pollutants must be reported by submission of a new application to the Chief of the Permits Section of the Surface Water Quality Division or, if such changes will not violate the effluent limitations specified in this permit, by notice to the Plainwell District Supervisor of the Surface Water Quality Division.Following such otice, the permit may be modified to specify and limit any pollutant not previously ited.3.Containment Facilities The permittee shall provide facilities for containment of any accidental losses of concentrated solutions, acids, alkalies, salts, oils, or other polluting materials in accordance with the requirements of the Michigan Water Resources Commission Rules, Part 5.This requirement is included pursuant to Section 5 of the Michigan Water Resources Commission Act 245, P.A.of 1929, as amended, and the Part 5 Rules of the General Rules of the Commission.

4.Operator Certification The permittee shall have the waste treatment facilities under direct supervision of an operator certified by the Michigan Department of Natural Resources, as required by Section 6a of the Michigan Act.5.Noncompliance Notification.

If, for any reason, the permittee does not comply with or will be unable to comply with any daily maximum effluent limitation specified in this permit, the permittee shall provide the Plainwell District Supervisor of the Surface Water Quality Division with the following information, in writing, within five (5)days of becoming aware of such condition:

A description of the discharge and cause of noncompliance; and The period of noncompliance, including exact dates and times;or, if not corrected, the anticipated time the noncompliance is expected to continue, and the steps taken to reduce, eliminate and prevent recurrence of the noncomplying discharge.

PERMIT NO.MI0005827 Page 16 of 19 Section A.6.Spill Notification PART IIThe permittee shall immediately report any spill or loss of any product, by-product, intermediate product, oils, solvents, waste material, or any other polluting substance which occurs to the surface waters or groundwaters of the state by calling the Department of Natural Resources 24-hour Emergency Response telephone number, 1-800-292-4706 (calls fzom out-of-state dial 1-517-373-8166);

and within ten (10)days of the spill or loss, the permittee shall submit to the Plainwell District Supervisor of the Surface Water Quality Division a full written explanation as to the cause and discovery of the spill or loss, clean-up and.recovery measures taken, preventative measures to be taken, and schedule of implementation.

This requirement is included pursuant to Section 5 of the Michigan Water Resources Commission Act 245, P.A.of 1929, as amended.7.Facility Operation The permittee shall at all times properly operate and maintain all treatment or control facilities or systems installed or used by the permittee to achieve compliance with the terms and conditions of this permit.8.Adverse Impact The permittee shall take all reasonable steps to minimize any adverse impa the surface or groundwaters of the state resulting from noncompliance with any effluent limitation specified in this permit including, but not limited to, such accelerated or additional monitoring as necessary to determine the nature and impact of the discharge in noncompliance.

9.By-Passing Any diversion from or by-pass of facilities necessary to maintain compliance with the terms and conditions of this permit is prohibited, except (a)where unavoidable to prevent loss of life, personal injury, or severe property damage, or (b)where excessive storm drainage or runoff would damage any facilities necessary for compliance with the effluent limitations and prohibitions of this permit.The permittee shall promptly notify the Plainwell District Supervisor of the Surface Water Quality Division and the Regional Administrator, in writing, of such diversion or by-pass.10.Power Failures In order to maintain compliance with the effluent limitations and prohibitions of this permit, the permittee shall either: a~Provide an alternative power source sufficient to operate facilities utilized by the'ermittee to maintain compliance with the effluent limitations and conditions of this permit which provision shall be.indicated in this permit by inclusion of a specific compliance date in each appropriate"Schedule of Compliance for Effluent Limitations".

b.Upon the reduction, loss, or failure of one or more.of the primary sou es of power to facilities.

utilized by the permittee to maintain compliance with the effluent limitations and conditions of this permit, the permittee shall halt, reduce or othezwise contzol production and/or all discharge in order to maintain compliance with the effluent limitations and conditions of this permit.

PERMIT NO.MI0005827 Page 17 of 19 PART II tion A.ll.Removed Substances Solids, sludges, filter backwash, or other pollutants removed from or resulting from treatment or control of wastewaters shall be disposed of in a manner such as to prevent any pollutant from such materials from entering navigable waters, or the entry of toxic or harmful contaminants thereof onto the groundwaters in concentrations or amounts detrimental to the groundwater resource.12.Upset Noncompliance Notification If a process"upset" (defined as an exceptional incident in which there is unintentional and temporary noncompliance with technology based permit effluent limitations because of factors beyond the reasonable control of the permittee) has occurred, the permittee who wishes to establish the affirmative defense of upset shall notify the Plainwell District Supervisor of the Surface Water Quality Division by telephone within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of becoming aware of such conditions and within five (5)days, provide in writing, the following information:

a.That an upset occurred and that the permittee can identify the specific cause(s)of the upset;b.c.'hat the permittee has specified and taken action on all responsible steps to minimize or correct any adverse, impact in the environment resulting from noncompliance with this permit.In any enforcement proceedings the permittee, seeking to establish the occurrence of an upset, has the burden of proof.13.Any requirement of this permit which is included under the unique terms of the Water Resources Commission, Act"45, P.A.of 1929, as amended, and rules promulgated thereunder, is not enforceable under the Federal Clean Water Act regulations.

PERMIT NO.'I0005827 Page 18 of 19 PART II B.RESPONSIBILITIES 1.Right of Entry The permittee shall allow the Executive Secretary of the Michigan Water Resources Commission, the Regional Administrator and/or their authorized representatives, upon the presentation of credentials:

a.To enter upon the permittee's premises where an effluent source is located or in which any records are required to be kept under the terms and conditions of this permit;and b.At reasonable times to have access to and copy any records required to be kept under the terms and conditions of this permit;to inspect any monitoring equipment or monitoring method required in this permit;and to sample any discharge of pollutants.

2.Transfer of Ownership or Control In the event.of any change in control or ownership of facilities from which the authorized discharge emanates, the permittee shall notify the succeeding owner or controller of the existence of this permit by letter, a copy of which shall be forwarded to the Plainwell District Supervisor of the Surface Water Quality Division and the Regional Administrator.

3.Availability of Reports Except for data determined to be confidential under Section 308 of the Act and Rule 2128 of the Water Resources Commission Rules, Part 21, all reports prepared in accordance with the terms of this permit shall be available for public inspection at the offices of the State Water Pollution Control A enc and the Regional Administrator.

As required by the Act, effluent data shall not be considered confidential.

Knowingly making any false statement on any such report may result in the imposition of.criminal penalties as provided for in Section 309 of the Act and Sections 7 and 10 of the Michigan Act.4.Permit Modification After notice and opportunity for a hearing, this permit may be modified, suspended, or revoked in whole or in part during its term for cause including, but not limited to, the following:

at Violation of any terms or conditions of this permit;b.Obtaining this permit, by misrepresentation or failure to disclose fully, all relevant facts;or C~A change in.any condition that requires either a temporary or permanent reduction or elimination of the authorized discharge.

PERMIT NO.MI0005827 Page 19 of 19 PART II tion B.5.Toxic Pollutants Notwithstanding Part II.B.4.above, if a toxic effluent standard or prohibition

'(including any schedule of compliance specified in such effluent standard or prohibition) is established under Section 307(a)of the Act for a toxic pollutant which is presenr, in the discharge and such standard or prohibition is more stringent, than any limitation for such pollutant in this permit, this'ermit shall be revised or modified in accordance with the toxic effluent standard or prohibition and the permittee so notified.6.Civil and Criminal Liability Except as provided in permit conditions on"By-Passing" (Part II.A.9., pursuant to 40 CFR 122.41(m))

and"Upset" (Part II.A.12., pursuant to 40 CFR 122.41(n)), nothing in this permit shall be construed to relieve the permittee from civil or criminal penalties for noncompliance, whether or not such noncompliance is due to factors beyond his control, such as accidents, equipment breakdowns, or labor disputes.7.Oil and Hazardous Substance Liability Nothing in this permit shall be construed to preclude the institution of any gal action or relieve the permittee from any responsibilities, liabilities, or nalties to which the permittee may be subject under Section 311 of the Act except as are exempted by federal rigulations.

8.State Laws Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties established pursuant to any applicable State law or regulation under authority preserved by Section 510 of the Act.9.Property Rights The issuance of this permit does not convey any property rights in either real or personal property, or any exclusive privileges, nor does it authorize violation of any Federal, State or local laws or regulations, nor does it obviate the necessity of obtaining such permits or approvals from other units of government as may be required by law.10.Severability The provisions of this permit are severable, and if any provision of this permit, or the application of any provision of this permit to any circumstances, if held invalid, the application of such provision to other circumstances, and the remainder of this permit, shall not be affected thereby.1.Notice to Public Utilities (Miss Dig)The issuance of this permit does not exempt the permittee from giving notice to public utilities and complying with each of the requirements of Act 53 of the Public Acts of 1974, being sections 460.701 to 460.718 of the Michigan Compiled Laws, when constructing facilities to meet the terms of this permit.

0 Permit No.MI 0005827 Page 1 of P.PERMIT CONDITIONS PART III A.GROUNDWATER DISCHARGE AUTHORIZATION The permittee is authorized to discharge from its wastewater treatment facility to the groundwaters of the state in accordance with the conditions below.This authorization shall continue until the Michigan Water Resources Comaission makes its final determination on a state groundwater discharge permit.B.GROUNDWATER DISCHARGE REQUIREMENTS During the period beginning on the date of issuance of this permit,and lasting until the expiration date of this permit, the permittee is authorized to discharge process wastes and sanitary wastes to the groundwater.

Such discharges shall be monitored by the permittee as specified below: Process wastes shall be disposed of into the ground in such a manner and by means of such facilities and at such location that they shall not injuriously affect public health, welfare, or commercial, industrial, domestic, agricultural, recreational, or other uses of the underground waters.Monitoring requirements for boiler water treatment systems process water (water tener, clarifiers, make-up demineralizers) and boiler cleaning water prior to.scharge into the ground.PARAMETER TO BE MEASURED Flow pH Cadmium Oil 5 Grease Sul fa te (SO<)Chloride (CL)Total Phosphorus Chemical Oxygen Demand Total Dissolved Solids FREiRUENCY Continuous Continuous At times of boiler cleaning water discharge Weekly At all times when regeneration of ion exchange resins occurs Weekly Weekly Weekly At all times when regeneration of ion exchange resins occurs TYPE OF SAMPLE Daily maximu, minimum Grab Gran 24-Hr."anoos'24-Hr, Composi te 24-Hr.Composite 24-Hr.Composite 24-Hr.Composite Monitoring requirements for sanitary wastewaters prior to discharge into the ground: PARAMETER TO BE MEASURED Flow State which seepage area is being utilized~FRE VENCY Continuous List when seepage areas are alternated REPORT List beginning and ending date and time of use of each seepage area Permit No.MI 0005B27 Part III-B{continued)

Page 2 of~Monitoring requirements for groundwater collected in monitoring wells: PARAMETER TO BE MEASURED Record static water elevation pH Total Chranium (Cr)Copper (Cu)Sulfate(S04)

Chloride (Cl)Hardness Nitrate-Nitrogen as N Sodium (Na)Polychlorinated Biphenyls Chemical Oxygen Demand Boron (B)Total Phosphorus (P)Total Dissolved Solids Cadmium Oil 5 Grease~FRE UENCY quarterly quarterly guarterly quarterly quarterly quarterly quarterly quarterly Ouar terly Ouarterly quarterly quarterly quarterly quarterly quarterly quarterly TYPE OF SAMPLE Reading at time of sampling Grab Grab Grab Grab Grab Grab Grab Grab Grab Grab Grab Grab Grab Grab Grab Results of all monitoring required in Part III of this permit shall be submitted to the Plainwell District Office of the l/aste Management Division.

AL RESOURCES COMMISSION THOMAS J.ANDERSON MARLEN FLUHARTY GORD YER KERR ELLW ATTSON O.STE YEAS RAYMOND POUPORE STATE OF MICHIGAN JAMES J.BLANCHARD.

Governor DEPARTMENT OF NATURAL RESOURCES STEVENS T.MASON BUILDING P.o.BOX 80028 LANSING, Ml 48909 DAVID F, HALES.&rector October 4, 1990 RZCF!~Z."-J OCf I 0)9"0 ENVIRONS::-N T'AL AFFAIRS Mr.Donald L.Baker Environmental Affairs Director Indiana Michigan Power Company P.O.Box 60 Fort Wayne, Indiana 46801

Dear Mr.Baker:

Staff of the Surface Water Quality Division of the Michigan Department of Natural Resources has reviewed your August 7, 1990 request for authorization to use Betz Clam-Trol CT-1-Molluscicde (Clam-Trol) to According to your letter, the dose rate will be 15 mg/1 of Clam-Trol added to the intake water for various in-plant usages., With the exception of fire protection, treatment will be accomplished in 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.The residual Clam-Trol would be detoxified with bentonite, prior to final discharge to Lake Michigan.The treatment is to take place on October 8, 1990.The requested use is authorized with the following conditions:

The final concentration of Clam-Trol in the discharge to Lake Michigan shall not exceed 0.08 mg/1, as a maximum.The concentration of Clam-Trol in the discharge shall be determined by analyses or, if an approved analytical technique is not available, by calculation based on the mass balance through the system.If the detection level is not adequate to determine compliance with the maximum limit, the discharge concentration of Clam-trol shall be less than detectable and the discharge.

shall be treated by appropriate detoxification measures.28The Company proposes to use bentonite clay at 30 mg/1 to detoxify the Clam-Trol.

Be advised that your current NPDES Permit contains the statement,"The receiving water shall contain no unnatural turbidity, color, oil film, floating solids, foams, settleable solids, or deposits in quantities which are or may become in)urious to any designated use as a result of this discharge." The treatment must be conducted in such a manner to assure compliance with this requirement.

There shall be no discharge of Clam-Trol to the ground.All treated water shall be captured so that it is detoxified prior to discharge to Lake Michigan.~(CI~

Mr.Donald Baker Page Two October 4, 1990 If you have any questions, please contact Mr.Fred Morley of the Plainwell District Office at 616-685-6851.

Sin ely Paul D.Zu er, Chief Surface Water,Quality Division 517-373-1949 NATURAL RESOURCES COMMISSION TH S J.ANDERSON J, FLUHARTY E.GUYER AMMER D A MATTSON O.STEWART MYERS RAYMOND POUPORE STATE OF MICHIGAN JAMES J.BLANCHARD.

Governor DEPARTMENT OF NATURAl RESOURCES STEVENS T.MASON BUILDING P.O.BOX 80028 LANSING.Ml 48809 DAVID F.HALES.DvtctOr December 5, 1990 Mr.Donald L.Baker Environmental Affairs Director Indiana Michigan Power Company One Summit Square P.O.Box 60 Fort Wayne, Indiana 46801

Dear Mr.Baker:

This letter is in response to your December 3, 1990 letter requesting authorization to continuously discharge chlorine, as a water treatment additive, to control Zebra Mussels in the essential service water system at the Cook Nuclear Plant, located in Bridgman, Michigan.The NPDES permit, MI0005827, issued to the Cook Nuclear Plant expired at midnight August 31, 1990.The NPDES permit reissued on September 20, 1990 does not'take effect until January 1, 1991.Therefore, the expired permit is still in force until that date.The permit currently in force limits the chlorine discharge time to 30 minutes per day.You have advised us that due to zebra mussel infesta-tion which hreatens the safety of the facility, the plant needs to immediately commence the use of chlorine on a continuous basis.The permit that was issued on September 20, 1990 and which takes affect January 1, 1990 allows for the continuous discharge of chlorine at 0.036 mg/1.The permit currently in force, Part'I-A-l.e., contains the authority for the Chief of the Surface Water Quality Division to approve the discharge of water treatment additives: "In the event the permittee shall require the discharge of water treatment additives in addition to any previously approved by the Chief of the Surface Water Quality Division, the permittee shall notify the Division Chief.Written approval, from the Chief of the Surface Hater Quality Division to discharge such additives at specified levels shall be obtained prior to discharge by the permittee." el&>~~~

Donald L.Baker December 5, 199 According to your December 3, 1990 letter, the control of Zebra Mussels in the essential ser vice water system.at the Cook Nuclear Plant is, in your Company's judgement, absolutely necessary for the safe operation of the plant.On the basis of that representation, and upon the authority granted me in the current permit, the continuous discharge of chlorine at 0.036 mg/1 is hereby approved.This approval is effective from the date of this letter until January 1, 1991, when the reissued permit takes effect.The environmental consequences are expected to be the same as those which would result from the continuous discharge of chlorine as authorized in the reissued permit.All conditions regarding chlorination contained in the reissued permit are to be met when continuous chlorination is practiced under authority of this letter.Failure to do so would void this authorization and subject you to enforcement action for violation of your current permit.If you have any questions in this matter please contact Mr.Fred Morley at the Plainwell District Office at 616-685-9886, or you may contact me.Sine cc: Mr.Paul Blakeslee, MDNR Mr.Fred Morley, HDNR Paul D.Zu r, Chief Surface Water guality Division 517-373-1949 APPENDIX III HERBICIDE APPLICATION REPORT 1990

INOIANA NICHIGAN POWER Date Derember 10, 1990 1990 Herbicide Spra>>Report-Cook P'ant F<<m Dane M.I"cKay R.F..Rrooks Summary n+Program A.Durina the month o+Ma>>, Noxious Veaetation Control, inc.applied a mixture of Karmex, Krnvar and Banvell"20 tn control qrass and weel qrowth nn the plant site.T.ocations treated include: KV Switrhaear Yards, roadwavs, parking lntsg nerimeters o;.+he sewaae ponds, and rontrolled/uncontrolted areas inside the proterted area.A total of 231 lbs.n+Karmex, 42 lbs.of Krovar, and 3.75 qallons n+Ranvell 720 was applied nver 35 acres.Right-of-Wav Maintenanre was performed under~~arious hus ties and KV lines on Cook Plant lands (see letter from R.T.Cheenev)attached.Five aallons of Tordon 101R and ten pounds of Spike RO-825 was used Purina 1990.C.Maior areas covered and observations made'n November.Moderate weed growth on the sides nf hnth sewage ponds.2.Road to Ahsnrption Pond: Good control on road.Ho weeds found at all.3."65 KV Switchaear Yard: Sparse patches of.grass arowinq throuahout

>>ard.Perimeter Fence is clear nf grass and weeds.4.345 FV Switchgear Yard: Sparse patches nf grass arnwing throuqhnut

>>ard..Perimeter+ence is clear n;crass and weeds.Railroad tracks east nf 7rainina Center: Pool~A.e8 cnntrol, nn wee~Is+nund at all.Intra-System 1~90 Herbicide Rorav Report december 10, 1~90 Paae 6.CESA: Good weed control, a+ew weeds arowina alonq N-NE sides nf fence.'7 Contractor supervisors parkina lot: Patches nf crrass crrowincr aloncr the east fence.Fast Sewaae Plant: Patches of arass and weeds qrowincr aloncr north and south sides of the huildina.9 South Sewaae Plant: Grass is arowina on all sides of the plant.10.69 F~?Switchaear Yard: Good weed control, no arass or weeds crrowincr in liard or alona fence.North protected area Pence: Good weed control, nn arass nr weeds found at all.South Perimeter Fence: Sparse patches of crrass crrowincr alona fence.13.Fast Perimeter Fence: Good weed control, no weeds fnund at a3.3..14.Site etesian Ruildincr:

Good weed control, smal3.~oatches of.arass crrnwina aloncr east side nf the huildincr.15.Contractors Trailer Complex: Soarse arass and weeds arowina aloncr hase nf trailers.16.3:CMS Office Trailer.: Good weed control, no weeds fnund at all.17.ZCMS Fab Shop: Good weed control, no weeds found at all.Southwest.

Side of Turbine Ruildinq: Good weed contro3., no weeds found at all.19.South End of Turbine Ruildina: Good weed control, no weeds found at all.20.Unit 1 EST Area: Good weed control, no weeds found at all.

1990,Ferhiride Sprav, Report 9 Decemher 10, 1990 Paae 3?1.Unit 2 RIPEST Area: Good weed control, no weeds found at all.22.Hvdrogen/Nitroaen Storage Tank Area: Good weed control, no weeds found at all.23.Met Tower huildina: Grass and Yfeeds arowinq around buildinq.24.Air Stations: Grass and weeds arowinq inside air station fences.25.Environmental

~?arehouse:

Grass and weeds arowing around hase of building.?6.Construction Fab Shop: Grass growing on north and west sides of the building.2'7.Rnvironmental Polebarn: Grass and weeds arowina ,around base of buildina.New areas to be sprayed next year: Road to Met Tower Ruildina.Gravel on hoth sides of access road to Red Arrow Hiqhwav.Apparently the selected herbicides and, their application continues to ronform with plant Technical Specifications to control encroaching veaetation, resultina in'reduct'on of maintenance costs and improvinq overall plant site visibilitv.

COOK NUCLEAR PLANT HERBICIDE APPLICATION DATA 1990Date 5-'I"-~0 5-~8-90 5-18-90 5-18-90 Location'765 Kxy vard Lbs.Karmex 13?345 KV Yard 33 33 69&r vard, Sewage Ponds, Absorption Pond Road, Site Design Ruildincrs, Sewacre Plants and all other arounds outside the nrotected area All unshaved 33 areas inside the protected area Lbs.Krovar 1.25 2000 20 500 5 1.25 500 1.25, 500 Gals.of Ranvell Gals.Acres 720 H20 Covered?31 Lbs.4?3.75 T~bs.Gals.3500 Gals.35 Acres INDIANA NlCHIGAN POSER Date December 4, lgg0 R/W Maintenance Herbicide Use on Cook Plant Lands E From R.J.Cheeney To D.McKay The following cutting and chemical usage was done at the Cook Plant during the 1990 calendar year.Under the Unit 1 765 KV Bus tie: Cut 31 brush units (15,500 square feet).Used 4 gallon of Tordon 101R for stump treatment.

Under the Dumont-Cook 765 KV line: Cut 80 brush units (40,000 square feet).Used 1 gallon of Tordon 101R for stump treatment.

Under the Unit 2 345 KV Bus tie: Cut 14 trees and 65 brush units (32,500 square feet).Used 1 gallon of Tordon 101R for stump treatment.

Under the Cook-Cook Jct.345 KV lines: Cut 110 brush units (55,000 square feet).Used 24 gallons of Tordon 101R'or stump treatment.

Under the E.Elkhart-Cook 345 KV line: Cut 80 brush units (40,000 square feet).Used 10 pounds of Spike 80-W25 for stump treatment.

Zf you have any questions about the work, please call me at Ext.2254.c/~~~~g/~p R.J.Cheeney RJC:et c: H.E.Brooks 8/016 Intra-System APPENDIX IV MACROPOULER MONITORING PROGRAM 1990 INDIANA MICHIGAN PONER COMPANY Cook Nuclear P3.ant 1990 Zebra Mussel and Asiatic Clam Monitoring and Control Report April 4, 1991 by Eric C.Mallen Since 1982, Cook Nuclear Plant has been utilizing a macrofouler monitoring program to detect the presence of Asiatic Clams (Corbicula fluminea).

Isolated finds of Asiatic Clams occurred in May of 1984, December of 1988 and November of 1989, and were summarized in previously submitted annual reports.Because of their extremely sparse population densitv and distribution at the Cook Nuclear Plant and local environs, Asiatic Clams have posed no nperationa3.

problems.In 1990, a program was instituted to detect the presence of Zebra Mussels (Dreissena polymorpha) as well as Asiatic Clams.The discovery of Zebra Mussels on Julv 18, 1990 durinq routine diving inspections and cleaninq o+the Unit 02 Screenhouse Intake Forebav, prompted further investigation into their population densitv and distribution in the plant's raw water systems.Dives e performed on the east and west sides of the plant's Unit 02'ling screens and condenser inlet tunnel.Individuals inc in sizes o+1/4"-1" in lenqth were found in densities of 0.25-0.67 individuals per square vard.The lake intake structures and the limestone rip rap adjacent to these structures were inspected, with only three individuals encountered.

No mussels were reported on the breakwaters or beaches at St.Joseph.On September 13, 1990, plant divers collected sediment samples from the vicinity of the plant intakes, and in front of Traveling Screens 1-7 and 2-1 in the Screenhouse Intake Forebav.A total of three Zebra Mussels were found in the two samples, and no Asiatic Clams were discovered.(See Attachment 01.)'oncurrent with these monitoring efforts, control strategies were evaluated, and a procedure was developed to use Betz Industrial's Clam-Trol, CT-1 to treat the raw water systems.The procedure to apply Clam-Trol to the Plant's raw water systems was performed on~October 8-9, 1990.A,1.2%to 100%mortalitv rate was realized, as measured by the placement of Bio-Boxes on the different raw water systems.The resu3.ts of the treatment are summarized in the tables and qraphs in Attachment g2.The Rio-Boxes on svstems which, displaved low mortality rates did not receive the vendor's specified CT-1 residuals of 15 ppm for a duration of 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.e 1990 Zebra Mussel and Asiatic Clam Monitoring and Control Report From October 9-11, 1990, five water samples vere taken from the Unit N2 Discharge Tunnel and examined for Zebra Mussel larvae.No veligers were found.(See Attachment Nl.)On October 12, 1990, the Bio-Monitor installed on the FSW system for the previous six months vas cleaned out.The test substrates and sediment were examined for Zebra Mussels and clams.Two juvenile Zebra Mussels were discovered.

Four fire hydrants, (tvo vithin the protected area and two outside), were flushed and the rinse water sieved on November 15, 1990.No Zebra Mussel or Asiatic Clam adults, juveniles, or shell fragments were detected.C-'reen algae, iron pipinq corrosion products, pebbles, and two snails of the qenus Phvsa were identified in the samples.(See Attachment.

Nl.)Divinq inspections of the Unit Nl intake Forebav vere performed bv Underwater Construction Corp.in November of 1990.inspections showed increasing numbers of Zebra brussels 1/8"-1/4" growing in densities approachinq 100 individuals per square yard.These appeared to be from this year's crop.Divers continued to report vounq-of-the-vear mussels qroving on trash racks, and travelina screen components as thev were beina removed for refurbishinq.(See Attachment N3.)Durinq a routine inspection of the Unit Nl West CCW Heat Fxchanger on December 1, 1990, live Zebra Mussels 1/8"-1/2" in size were found attached to the discharge channel and end bell sections of the heat exchanqer.

Their density was estimated to be 50 individuals per square yard.Zebra Mussel sitings have been made at other rav water users'acilities toward the south end nf Lake Michigan.To date, none have been discovered on the breakwaters and beaches of St.Joseph, MX.Due to their lov densities and population distribution within the rav water systems, Zebra Mussels and Asiatic Clams have yet to pose operational problems at the Cook Nuclear Plant.A joint plant/corporate task force vas formed in 1990 to develop a Zebra Mussel eradication/control plan.This plan is beinq implemented in 1991.

Environmental Resources Nanagement, Inc.ATTACHMENT 1 Suite 200~3025 Boardwalk Drive~Ann Arbor, Michigan 48108~(313)76~80~Telefax (313)76&4264 22 January 1991 Mr.Allen E.Gaulke Environmental Engineering American Electric Power Service Corporation 1 Riverside Plaza Columbus, Ohio 43215 RE: End of Year Report for Biofouling Monitoring at Cook Nuclear Power Plant, Bridgman, Michigan Dear Mr.Gaulke Enclosed for your review are the results of our biofouling monitoring sampling efforts for 1990.We are in the process of developing a revised sampling plan and proposal for this years monitoring to include the use of artificial substrates in the foreby area.hould you have any questions concerning the report please do not hesitate call us.Sincerely ERM, Inc.Richard F.Gendernalik Project Scientist Enclosure CC Mallen P.McCall R.Dwyer p,n alfiliate of The Environmental Aesources Management Group with otfices worldwide ATTACHMENT 1 MOLLUSC BIOFOULING MONITORING 1990 END OF YEAR REPORT D.C.COOK NUCLEAR POWER PLANT.BRIDGMANs MICHIGAN 22 January 1991 Richard F.endernalik Project Scientist obert L.D r, Ph.D.Project, Manager Prepared For: American Electric Power Service Corporation 1 Riverside Plaza Columbus, Ohio 43215 Prepared By: Environmental Resources Management, Inc.855 Springdale Drive Exton, Pennsylvania 19341 File No.: B017-01-0001 ATTACHMENT 1 INTRODUCTION Environmental Resources Management, Inc.(ERM)was retained by American Electric Power Service Company (AEP)to undertake a monitoring program for two molluscs that have the potential for fouling the open-cycle cooling system and other water supplie's of the Cook Nuclear Power Plant in Bridgman, Michigan.The monitoring program is required by the U.S.Nuclear Regulatory Commission as part of the ongoing nonradiological environmental monitoring program at the plant.The two molluscs are the zebra mussel (Dreissena potymorpha) and the asiatic clam (Corbicula fluminea).

Both organisms have established themselves in the Great Lakes.Zebra mussels in particular have colonized much of the hard substrate along the Lake Erie coast, and have fouled the intake structures of power plants and municipal water supplies.This report presents the results of initial sampling of several water systems in the Cook plant, conducted in October and November 1990.The program was intended to monitor for both veligers (juveniles) and adults.However.the program was begun late in the year, so comprehensive sampling was not undertaken.

A full sampling program is planned for 1991.1-1 ATTACHMENT 1 METHODS The ERM biofouling monitoring at the Cook Facility in 1990 consisted of three types of sampling efforts: plankton sampling, sediment sampling and fire hydrant sampling.The plankton sampling was undertaken to determine the number of veliger larvae of the zebra mussel present in the forebay area of the power plant.The sediment and fire hydrant sampling were used to monitor the presence of juveniles and adults of both the asiatic clam and the zebra mussel.All sampling was conducted according to D.C.Cook Nuclear Plant Procedure No.12 THP 6020 ENV.101 as follows: five plankton samples were collected on 9-11 October 1990 from the intake forebay of Unit 2.The samples were collected by pumping 41 gpm (using a nondestructive diaphragm pump)through a plankton net and collecting the sample in the cod end.Samples were refrigerated (unpreserved) until they were counted on 12 October 1990 in order to be able to identify veligers by their movement patterns.Samples were sorted and counted by concentrating the volume of the sample down to 75 ml using a 63 pm plankton cup, and counting 5 successive 1.0 ml (or 0.75 ml in one case)aliquots in a Sedgwick-Rafter cell under 100-400x magnifications.

This subsampling is the equivalent of examining 0.67 to 7,02 m3 of Lake Michigan water (intake water)for larvae.Sediment samples were collected by AEP personnel at the bottom of the, intake forebay and near the intakes in Lake Michigan.A biomonitoring

--chamber (containing cobble-sized stones as an artificial substrate and exposed to flowing water from the essential circulating water systems of the plant)was also sampled for sediment and attached mussels.Sediment samples were placed in a pan and examined under a magnifying lens for juvenile mussels and clams.Four hydrants were sampled using a No.35 mesh benthos sieve.A Are hose was connected to each hydrant and directed to a 55-gallon drum.The 55-gallon drum was outfitted with a 3-inch drain pipe/flow meter located approximately 3-inches from the bottom of the drum.The drain pipe was directed to the nearest storm drain.No direct discharge to any other waterways took place, The benthos sieve was placed inside the drum against the drain pipe opening.The sieve was held in place by hand until the force of the draining water held it tight against the walls of the drum.1-2 ATTACMMENT 1 Flow rates were controlled at the hydrant and were noted at the flowmeter on the discharge pipe.Initial flows were collected for 10 minutes and ranged from 31 gallons/minute to 95 gallons/minute.

A second flush of 5 minutes duration was conducted at the highest rate that could be controlled by personnel handling the hose.The flow rates for this second flush ranged from 94 gallons/minute to 124 gallons/minute.

At the end of each flush the sieve was removed from the drum and any material collected on it was carefully washed into a collection jar.Material collected from the first and second flushes were combined for each location.Any remaining water and/or debris left in the 55-gallon drum was drained through a 1-inch diameter opening in the bottom of the drum into a sieve placed under the drum.The samples were visually observed at the sampling'site for the presence of juvenile or adult mussels and clams.The following day, all samples were screened for the presence of adult mussels or clams using a fluorescent magnifying lamp.1-3 ATTACHMENT 1 RESULTS Five plankton samples were examined for zebra mussel larvae (see Table 1), The samples all contained a diverse zooplankton fauna (indicating that the pump/net sampling system was operating efficiently and nondestructively).

However, no zebra mussel larvae were found.Sediment sample results are presented in Table 2.No, asiatic clams were found in the two sediment samples or the biomonitoring sample.A total of five zebra mussels were found in the three samples, ranging in size from 3 to 21 mm.Table 3 summarizes the hydrant sampling at each location.No asiatic clams, zebra mussels or fragments were found at any of the sampling locations.

The aquatic snail Physa sp.was identified at two locations:12-HYD-ll and 12-HYD-12.The freshwater algae Ctadophora sp.was found at all locations.

Numerous small fragments of what appeared to be corroded iron piping and pebbles were also observed at each location.1-4 ATTACHMENT 1 DISCUSSION The sediment and biomonitoring samples indicate that zebra mussels are present in very low abundance in Lake Michigan near the circulating water intake, in the intake forebay, and in the essential water system of the plant.Also, zebra mussels were not found to be present in the fire protection system.No zebra mussel larvae were detected in the five plankton samples, collected from 0.6 to 7.0 m3 of water from the main circulating water system.It should be noted that the samples were collected in October, when larvae would not be expected to be present in the water column.Thus, these plankton samples may not give an accurate assessment of the potential abundance of larvae which may be present earlier in the year.No evidence of asiatic clams was found in any of the plankton, sediment, or hydrant samples.1-5 Table 1 Plankton Sample Results Cook Nuclear Power Plant, Brldgman.Mlchlgan 12 October 90 Cook Unit 2 Discharge Bay Plankton Pump Sampling CK U2 10/09/90 CK U2 10/10/90 41 gpm 41 gpm Sample Number Flow rate 37.108 850ml 75ml 11,690 800ml 75ml Total gallons Sample Conc.Volume Volume Sub-Sample

'olume 0.75ml 1.0ml Velfger" Count 0 CK U2 10/10/90 41 gpm 3.989 500 ml 75ml 1.0ml CK U2 10/10/90 41 gpm 3,710 900ml 75ml 1.0ml CK U2 10/11/90 41 gpm 2.649 230ml 75ml 1.0ml'tve sub-samples were taken of each concentrated volume"Total counts for the ftve sub.samples Is shown ATTACHMENT 1 Table 2 Sediment Sample Results Cook Nuclear Power Plant, Bridgman, Michigan 12,13,14 September 90 Sample Location Intake Structure Date 9-13-90 Organisms Drefssena polymo~ha Sphaerlum sp.Gastropoda Lymnaea sp.(BuBmnea)Gonfobasfs sp.Physa sp.Gyrautus sp.Total number 1 (21 mm)12 (1/2 shells)8 2,1~1 Travel Screen d 2-1 9-13-90 Drefssena polymorpha Sphaerfum sp.Gastropoda Lymnaea sp.(Bulimnea)

Gontobasfs sp.Physa sp.2 (3,20 mm)12 (1/2 shells)15 8 7 Biomonitor (sediment and washing from hard substrate) 10-12-90 Drefssena polymorpha Sphaerfum sp.2 (3,5 mm)20 (1/2 sheQs)'enotes Itve specttnen Cook Nuclear Power Plant-Fire Hydrant Sampling Table 3 Fire Hydrant Sampling 19 November 1990 Sample Location Flow Meter Reading Elapsed Flow Rate Start End Time Total Gallons Asiatic Clams Zebra Mussels Other FH 12-HYD-2A 36583.0 36586.1 10'1 gpm 36586.1 36590.8 5'4 gpm FH 12-HYD-12 36590.8 36596.7 10'9 gpm 36596.7 36602.9 5'24 gpm FH 12-HYD-21 36602.9 36611.1 10'2 gpm 310 470 590 620 820 0-A 0-J-FR 0-A 0-J 0-FR 0-A 0-J R 0-A 0-J-FR 0-A 0-J 0-FR 0-A 0-J-FR Cladophora sp.metal frag.b l Ciadophora sp.1-Phtisa sp.metal frag.I Cladophora sp.metal frag.FH 12-HYD-11 36611.1 36620.6 36620.6 36626.3 10'5 gpm-950 5'14 gpm 570 0-A 0-J 0-FR 0-A 0-J 0-FR Cladophora sp.1-Physa sp.metal irag.bl Key: FH-fire hydrant A-Adults J-Juveniles FR-shell fragments CIRC.VNTER COND.OUT.U1 Conc.CT-1 ppm and Temperature vs Time 100 80 60 40 20 0 21:46 10/8/90 00.46 10/9/90 U2:00 10/9/90 04:00 10/9/90 06.10 10/9/90 06:20 10/9/90 TING%Conc.CT-1 H Target CT-1 Conc.~Temp.Deg.F 100%Mortality CIRC.WATER COND.OUT.U2 Conc.CT-1 ppm and Temperature vs Time 70 60 50 40 30 20 10 0 21:40 10/8/90 00.46 10/9/90 02:00 10/9/90 04:00 10/9/90 06.10 10/9/90 06:20 10/9/90 Tl Ne~Conc.CT-1 69Target CT-1 Conc.EGTemp.Deg.F UNIT 1 ESW Conc.CT-1 ppm and Temperature vs Time 100 80 60 40 20 0 21:60 10/8/90 00:46 10/9/90 02:16 10/9/90 04:00 10/9/90 06:10 10/S/90 06:20 10/9/90 Time~Conc.CT-1 EZ Target CT-1 Conc.~Temp.peg.F 100%mortality

<rr r~~r~r<<~~I~~~~~~~~I I~~~~~~i~~~~~~~I~~t~

UNIT 1 NESW Conc.CT-1 ppm and Temperature vs Time 80 60 40 20 0 21:40 10/8/90 00 46 10/9/90 02:10 10/9/90 04.00 10/9/90 06.10 10/9/90 06.16 10/9/90 Tl IB%Conc.CT-1 H Target CT-1 Conc.EQ Temp.Deg.F 1.2%mortality Summary of Clam-trol Application Results Bio-Box Control Unit¹1 Nesw Unit¹2 Circ.Water Condenser Outlet Unit¹2 ESW Unit¹1 ESW Unit¹1 Circ.Water Condenser Outlet%Mortality 4.9 1.2 13.3 95.0*100.0>>100.0 Mortalities attributable to causes other than Clam-trol October 8-9, 1990 MUSSEL MORTALITY GUM/0 100 80 60 40~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~t~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~t~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\~~~~~~~~~~t~~~~~~0~~~~~~~~~~~~~~~0~~~~~~~~~~~e~i~~~~~~~~~0~~~~~~~~~~~~~~~~20 9 10111213141616171819202122232426262728293031 1 2 3 4 6 6 7 8 M U1 NESW 1.2%I U2 ESW 96%EB Control 4.9%KB U1 ESW 100%CD U2 Cond 13.3%U1 Cond 100%10/9-11/8/90 Clam-trol Application Conclusions 1.Water temperatures were well within vendor's recommended ranges.2.With the exception of the Unit¹1 Circ.Water Condenser Outlet, the recommended residual of 15ppm for 12hrs.was never achieved in the systems treated.3.Unit¹1 Circ.Water Condenser Outlet mortality curve exhibited that=typical of a toxic material introduction with a high kill up front.4.Mortalities registered in the ESW bio-boxes were due to causes other than Clam-trol.

5.Problems with detoxification feed resulted in active Clam-trol being detected in Unit¹1 8¹2's discharges, and application being terminated.

October 8-9, 1990 ATTACHMENT 3{DONAID C.GXK NUCURR SZATION ZEBRA NJSSRL INSPECTION UNIT N Foreman: Shane Alber tson ATTACHMENT 3 LJAIIDI=IQMllka I=I%C~C3iXIKS a IQLJC~s ICBM'I C~CQIQI>C1IRika ICBM P.O.BOX 6901/WHEELING, WEST VIRGINIA 26003/PHONE: I304)547-0103 IhGIANA MICHIGAN P04ER CCAPANY IXNALD C.COCK MXLEAR STATION ZEERA NJSSEL INSPECTION LNIT¹2 1990 1)The keyway inside of bay 1-5, 1"6 south side-approximately 5'ff't the floor, 5'ast of traveling water screen, a 3'quare area contains 33 Zebra Mussels.2)Same keyway as above on north side, approximately 5'rom tloor, 5'ast of traveling water screen, a 3'quare area contains 28 Zebra Mussels.3)Same keyway as above on southwest corner, 5'ff the floor, a 3'quare area contains 25 Zebra Mussels.4)15'ast of traveling water screen 1-6, on the floor, a 3'quare area contains 100 Zebra Mussels.5)On the northeast corner of keyway 1-5, 1-6, approximately 5'ff the floor a 3'quare area contains 1 Zebra Mussels.6)On the southwest corner of the dividing wall, between 1-5, 1-4, approximately 5'ff'he floor, a 3'quare area contains 7 Zebra Mussels.7)The same southwest corner as¹6 above (1-5, 1-4), approximately 20'ff the floor, a square area contains 5 Zebra Mussels.8)Inside Unit¹1, east southwest bay, on the east wall, approximately 5'rom the floor, a 3'quare area contains 32 Zebra Mussels.9)On the east wall off'he circulating pump¹13 approximately 5'rom the floor, a 3'quare area contains 25 Zebra Mussels CORPORATS HSAOOUARTERS:

PO BOX 699.110 PLAiNS ROAO.SSSEX.CONNECTICUT 06426~(203)767.6256 One OI The breoe COmeenee ATTACHMENT 3 Zebra Mussel Inspection Unit¹1-1990 Page 2~10)Unit¹1 east southwest bay inside north wall, approximately 5'rom the floor, a 3'quare area contains 1'I Zebra Mussels.'l1)Unit¹1 east southwest bay inside south wall, approximately 5'rom the floor, a 3'quare area contains 11 Zebra Mussels.'12)The east, east southwest pump is lightly coated with Zebra Mussels.

0+C+?l-2 l-3 i o>-6 I-7 4 2-I 2 2 2-3 2-4 i 2-5$2-7~i/~Q~y~i DAT'E:.INSP.BY:

APPENDIX V ANNUAL REPORT: RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 1990

DONALD C.COOK NUCLEAR PLANT UNXXS 1 R2 OPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 1990 ANNUAL REPORT JANUARY 1 to DECEMBER 31, 1990 Prepared by INDIAIVA MICHIGAN POWER COMPANY and TELEDYNE ISOTOPES April 15, 1991

TAB APPE E IE (Cont)APPENDIX A-Radiological Environmental Monitoring.........................................33 Program Summary-1990 APPENDIX B-Data T bles ab es b es~eeeeeeeeeeeeeeeeeeeesseseeeeeseeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeeeeseeeeeeeseeeseeeeseeeeee

~e3 8 APPENDIX C-Analytical Procedures Synopsis.........................................................e65 APPENDIX D-Sununmy of EPA Interlaboratory Comparisons

...........................79 APPENDIX E-HEMP Sampling and Analytical Exceptions..................................99 APPENDIX F-Lan U dU Use Surveys..........................................................,................,......

102 APPENDIX G-Suaunary of the Preoperational Radiological

............................

111 Monitoring Program PENDIX H-Summary of the Blind Duplicate Sample Program.................115 APPENDIX I-Summary of the Spike and Blank Sample Program.................118 APPENDIX J-TLD uaB Quali unity Control Program................

e 130

LXST OF TABLES T~ITL PA E B-1 Concentrations of Gross Beta Emitters in Weekly.........................................39 Airborne Particulates B-2 Concentrations of Gamma Emitters in Quarterly...........................................43 Composites of Airborne Particulate Samples 8-3 Concentrations of Iodine-131 in Weekly Air Cartridge...............................45 Samples 8-4 Direct Radiation Measurements

-Quarterly TLD Results....................,......49 B-5 Concentrations of Iodine Tritium and Gamma Emitters.......................,...50 in Surface Water Concentrations of Tritium and Gamma Emitters in............................,........53 Quarterly Groundwater B-7 Concentrations of Gross Beta, Iodine, Tritium and........,..............................54 Garmna Emitters in Drinking Water B-8 Concentrations of Ganja Emitters in Sediment.........................................,56 B-9 Concentrations of Iodine and Gamma Emitters in Milk.........................,...57 B-10 Concentrations of Gamma Emitters in Fish.....................................................61 B-11 Concentrations of Ganja Emitters in Food Products.................................62 3-12 ical KD Typ LLD KDs Achieved..............................,...............................................................63

SUMMARY

INDIANA MICHIGAN POWER COMPANY DONALD C.COOK POWER NUCLEAR PLANT RADI L I AL ENVIR NMENTAL M NIT RIN PR This report summarizes the collection and analysis of various environmental sample media in 1990 for the Radiological Environmen-tal Monitoring Program for the Donald C.Cook Nuclear plant.The various analyses of most sample media suggest that there was no discernable impact of the nuclear plant on the environment.

The analysis of air particulate Alters, charcoal cartridges, direct radiation by thermoluminescent dosimeters, fish, water, milk and sediments from Lake Michigan, drinking water, and food products, either did not detect any radioactivity or measured only naturally occurring , radionuclides at normal background levels.Tritium.measured at low levels in on-site wells, appears to be the only radionuclide attributable to the plant operations.

However, the associated ground water does not provide a direct dose pathway to man.

I.INTRODUCTION L~lm'R l3 Tton The Donald C, Cook Nuclear Power Station's Radiological Environmental Monitoring Program (REMP)is conducted in compliance with NRC Regulatory Guide 1.21 and 4.1, licensing commitments, and Technical SpeciQcations.

The REMP was developed in accordance with the NRC Radiological Assessment Branch Technical Position (BTP).Rev.1, November 1979.A synopsis of the sampling program and maps can be found in Section II, Sampling and Analysis Program.This report represents the Annual Environmental Operating Report for Units 1 and 2 of the Donald C.Cook Nuclear Plant for the operating period from January 1, 1990 through December 31, 1990.A.The Donald C.Cook Nuclear Plant of Indiana Michigan Power Company is located on the southeastern shore of Lake Michigan approximately one mile northwest of Bridgman, Michigan.The plant consists of two pressurized water reactors, Unit 1, 1030 hDVE and Unit 2, 1100 MVE.Unit 1 achieved initial criticality on January 18, 1975 and Unit 2 achieved initial criticality on March 10, 1978.R Objectives The objectives of the operational radiological environmental monitoring program are: 1.Identify and measure radiation and radioactivity in the plant environs for the calculation of potential dose to the population.

2.Verify the effectiveness of in-plant measures used for controlling the release of radioactive materials.

3.Provide reasonable assurance that the predicted doses.based on effiuent data, have not been substantially underestimated and are consistent with applicable standards.

4.Comply with regulatory requirements and Station Technical SpeciQcations and provide records to document compliance.

II.SAMPLING AND ANALYSIS PROGRAM II.SAMPLIN AND ANALY I PR RAM Table I summarizes the sampling and analysis program for the Donald C.Cook nuclear plant for l990.For each sample medium, the table lists the sample locations, including distance and direction from the center of the bvo units, and the station identiQcation.

The station identifications for man of the sampling locations are shown on the maps, Figures 1, 2, and 3.Also for each sample medium the sample coQection frequency.

type of analysis, and frequency of analysis are listed.

TABLE 1 DONALD C.COOK NUCLEAR PLANT-l990 RADIOLOGICAL SAMPLING STATIONS DISTANCE AND DIRECTION FROM PLANI'XIS Station Distance Direction De rees Collection Envtronmental LD's ONS-1 ONS-2 ONS-3 ONS-4 ONS-5 ONS-6 ONS-7 ONS-8 ONS-9 ONS-10 ONS-11 ONS-12 Ncw Buffalo South Bend Dowaglac Coloma lntersecUon of Red Arrow Hwy.8c Marquette Woods Rd, Pole NB294-44 Stevensvlllc SubstaUon Pole NB296-13 Pole NB350-72 Intersection of Shawnee&Cleveland.

Pole¹B387-32 Snow M..East of Holden Rd., NB426-1 Brldgman SubstaUon Callfornla Rd..Pole NB424-20 Rlggles Rd., Pole B369-214 IntersccUon of Red Arrow Hwy.,&Hildebrant Rd.,Pole NB422-152 Intcrsectlon of Snow Rd.&Baldwin Rd., Pole¹B423-12 (A-1)(A-2)(A-3)(A-4)(A-5)(A-6)(A-7)(A-8)(A-9)(A-10)(A-'l)(A-12)(NBF)(SBN)(DOW)(COL)(OFS-1)(OFS-2)(OFS-3)(OFS-4)(OFS-5)(0FS-6)(OFS-1)(OFS-8)(OFS-9)(OFS-10)(OFS-11)593 713 734 564 578 584 641 613 417 424 600 699 16.0 24.0 26.0 20.0 3.5 3.0 4.0 3.2 3.2 3.5 2.0 3.0 3.25 2.6 2.8 m m m m m m m m m m m m ml SSW ml SE ml ENE ml NNE ml NNE ml NNE ml NE ml ENE ml ESE ml SE ml S ml SSE ml E ml SSW ml S 184 480 90o 118'89'10o 360 82 149'27'14 63'uarterly Direct RadfaUon/Quarterly TABL 1 (Cont.)DONALD C.COO LEAR PLANT-1990 RADIOLOGIC PLING STATIONS DISTANCE AND DIRECflON FROM PLANT AXIS Station DIstance Direction De reea Collection Air Charcoal ONS-I ONS-2 ONS-3 ONS-4 ONS-5 ONS-6 New Buffalo South Bend Dowaglac oo Coloma (A-1)(A-2)(A-3)(A-4)(A-5){A-6)(NBF){SBN)(DO%)(COL)593 m 713 m 734 m 564 m 578 m 584 m 16.0 mi 24.0 ml 26.0 ml 20.0 ml SE ENE NNE 18o 48'0O 118O 189o 210o Weekly Gross Beta/Weekly 1-131/Weekly Gamma Isotopic/Quarterly Composite Ground ell Water Onslte Onslte Onslte Onsite Onslte Onslte Onslte (W-I)(W-2)(W-3)(W-4)(W-5)(W-6){W-7)600 m 699 m 999 m 127 m 123 m 129 m 578 m 11 63'07'0lo 290'73o 189'uarterly Gamma Isotopic/Quarterly-

&Ourn/Quarterly 1-131/Quarterly Non Technical S tion Related%ella Steam Generator Storage Facility Steam Generator Storage Facility Steam Generator Storage Facility Steam Generator Storage Faclllty (SGRP-1)(SGRP-2)(SGRP-4)(SGRP-5)1215 m 1190 m 1126 m 1128 m 96o 93'6o 94 Quarterly Gross Beta/Quarterly Gross Alpha/Quarterly Gamma Isotopic/Quarterly I-131/Quarterly TABLE 1 (Cont.)DONAL9 C.COOK NUCLEAR PLANT-1990 RADIOLOGICAL SAMPLING STATIONS DISTANCE AND DIRECTION FROM PLAÃi'XIS Distance IHrection Coliectton Water St.Joseph Public Intake Lake Township Public Intake Station (STJ)(LTD 9.0 mi 0,40 ml NE Gmss Beta/14 Day Composite Gamma Isotopic/14 Day Composite 1-131/14 Day Composite'Mtlum/Quarterly Composite 8urface Water Condenser Circulating Water Intake Lake Michigan Shoreline Lake Michigan Shoreline Lake Michigan Shoreline Lake Mlchlgan Shoreline Ll L-2 L-3 L-4 L-5 0.24 ml 0.44 ml 0.1 ml 0.1 ml S N SSW NNE Gamma Isotopic/Monthly Composltc Mttum/Quarterly Composite 1-131/Monthly Composite Lake Michigan Shoreline Lake Michigan Shoreline Lake Michigan Shoreline Lake Michigan Shoreline L-2 L-3 L-4 I 5 0.24 ml 0.44 ml 0.1 ml O.l ml S N SSW NNE Semi-annually Gamma Isotopic/Seml-Annually Totzke Farm Wyant Farm Schuler Farm Llvlnghouse Farm Warmblen Farm Zelmer Farm Lomzack Farm Banda Dowagalc Baroda La Porte Three Oaks Brldgman Galien Totzke Wyant Schuler Ltvinghouse Warmblen Zelmer Lozmack 4.5 ml 18.0 mi 4.25 mi 20.0 ml 7.8 ml 4.75 ml 9.0 mi ENE E SE S S SSE SS Once per every 14 Days Gamma Isotopic/per Sample 1-131 per Sample TABLE 1 (Cont.)DONALD C.COO PLANT-1990 RADIOLOGICAL LING SI'AEONS DISTANCE AND DIRECHON FROM PLANT AXIS Distance Direction De es CoHection ONS-N ONS-S OFS-N OFS-S.I mi.I m1 3 mi 5 ml N S N S Semi-annually Gamma Isotopic/Semi-annually Grapes, Grape Leaves.Grapes, Grape Leaves,~Broadleaf Vegetation Offsite Offslte Onsite Indicator Conbel Variable 20 miles Variable Determined from offsite Dose Caicuhtion manual At time of harvest Gamma Isotopic/At time of harvest Composite samples of Drinking and Surface water shall be collected at intervals not to exceed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, Particulate sample filters should be analyzed for gtoss beta activity 24 or more hours following Qlter removal.Ilds wiII allow for radon and thoron daughter decay.If gross beta activity in air or water is greater than 10 times the yearly mean of contxol samples for any medium, gamma 1sotop1c analysis should be performed on the individual samples.Please note the following defenitions:

Weeldy-at least once per evay seven P)days Quarterly-at least once per every ninety-two (92)days Semi-annually

-at least once evety one hundred eighty-four (184)days Figure 1 A sir, TLDStations L Lake Water Sample Stations (Intakes)M Milk Sample Stations ZO NIEFS~Watervliet A.BENTON HARBOR~<y~-: ST.J H,;"'.~: 'ce Aisle StevensvI e D.C.COOK PLANT Eau Claire I DOWAGIAC I I'M New Buff ol MICHIGAN WDIae~Bridgman M U5 I Ber rien Springs NILES j M//sect///.-1ICHIGAf4."-.

CIT'If~U5 eo IO New Carllsle XO IttO!SDUTH'4 BEND 20~<Pj: sjfg SCALE OF MILES LuAe TRUE PLANT NORTfl NORTH L3"'"I PJ h-l 1 A2HRESTRICTED AREA PROPERTY UHE ROAD AAehlgon=L4 SHORE LINE-L2 L5 h-I I H-S PLANT W2 i h-8 765 I(V YARD h-I 0/~~h-9 r W7 2,000 FooT RADIUS RAILROAD TRACK W3 SGRP-l SGRP-5 SGRP-2 p.-~'HESAPE'AKE 8 OHIO R.R.0 I 1000 2000.'>I:AI.I:

3000 4000 I'yf".I'tgr Jl 0 htmpl4-S"a" ious (II-y thru II-12 are TI,O Statio>>s O>>ly)M-Nell Na ter Sample Stations I.-l.ake Mater, Sediment Sample StatioiI~(l.l is a Lake Mater Station Only)SOIII'Non Tcwh Spec Mel 1 Na ter Stations Figure 3 MA I a f'.TLD Stations Within 1-5 Mile Radius of Plant OPS-1 OOt m ops-s OFS-3 R VIL I I I r OKflSY NARY WEfb IKLAb 0 Vt IA miles?,1 O r mueC C OPS-4"Waco l I I RbAb slERlCHO 4 4 Nl AN OPS-9)OFS-5 5RlOQMA 4 OPS-7 i 4 I I r I J I4 I 4 Z 4 SXALA NOAb 4 OFS-1 wg/" I 4 r PS-1%OFS-8 r 4 OPS-.6i4 AROWMTbwk Rblb 15 I~I'Q I II I.-F%QPFt.'l+>.II'Ili8 y eg (~gt i~f't I I 4.<</~~l)8%r.i-,~

III.

SUMMARY

AND DISCUSSION OF 1990 ANALYTICAL RESULTS 15 DI I N F A discussion of the data from the radiological analyses of environmental media collected during the report period is provided in this section.Analyses of samples for 1990 were analyzed by Teledyne Isotopes, Inc.(TI)in Westwood, New Jersey.The procedures and specifications followed at Teledyne Isotopes are in accordance with the Teledyne Isotopes Quality Assurance Manual and are explained fn the Teledyne Isotopes Analytical Procedures.

A synopsis of analytical procedures used for the environmental samples are proved in Appendix C.In addition to internal quality control measures performed by Teledyne, the laboratory also participates in the Environmental Protection Agency's Interlaboratory Comparison Program.Participation in this program ensures that independent checks on th'e precision and accuracy of the measurements of radioactive material in environmental samples are performed.

The results of the EPA Interlaboratory Compartson are provided in Appendix D.Radiological analyses of environmental media characteristically proach and frequently fall below the detection limits of state-of-the-art easurement methods.Teledyne Isotopes analytical methods meet or exceed the Lower Limit of Detection (LLD)requirements given in Table 2 of the USNRC Branch Technical Position of Radiological Monitoring, Revision I.November 1979.The following is a discussion and summary of the results of the environmental measurements performed during the reporting period.Comparison is made where possible with radioactivity concentrations measured in the preoperational period of August 19?1 to the initial criticality of Unit 1 on January 12, 1975.A brief summary of the preoperational program is found in Appendix G.A, Airborne Particul Results of gross beta activities are presented in Table B-1.The measurement of the gross beta activity on the weekly air particulate filters is a good indication of the levels of natural and or manmade 16 Trending Graph-1 40 30 25 o O 20 I E l5 10 0 5 V 0 P 1/P2/03/04/05/-06/07/08/09/1 pl 1 II 12/0 II 02l 03/04/05/06/07/08/09/1 pl I II 12/89'9 89 89 89 89 89 89 89 89 89 89 90 90 90 90 90 90 90 90 90 90 90 90 Indicators

~~9~Controls radioactivity in the environment.

The average gross beta concentration of the six indicator locations was 0.017 pCi/m3 with a range of individual values between 0.005 and 0.031 pCi/m3.The average gross betaconcentration of the four control locations was 0.018 pCi/m3 with a range between 0.005 and 0.036 pCi/m3.In Trending Graph 1 the monthly average gross beta concentrations for the indicator locations and for the control locations are plotted.The gross beta concentrations in air particulate Alters in 1990 were lower than at the end of the preoperational period when the eQ'ects of the recent atmospheric nuclear tests were being detected.Air particulate fQters were composited by location on a quarterl basis ry asis and were analyzed by gamma ray spectroscopy.

Beryllium-7 which.is produced continuously in the upper atmosphere by cosmic radiation was measured in all forty samples.The average concentration for the control locations was 0.075 pCi/m3 and the values ranged from 0.013 to 0.103 pCi/m3.The average concentration for the indicator locations was 0.073 pCi/m3 with a range of 0.041 to 0.100 pCi/m3.These values are typical of beryllium-7 measured at various locations throughout the United States.Naturally occurring potassium-40, probably from dust, was measured in two of the sixteen control quarterly composites with an average concentration of 0.006 pCi/m3 and a range of 0.005 to 0.007 pCi/m3.Potassium-40 was measured in two of the twenty-four indicator quarterly composites with an average concentration of 0.005 pCi/m3 and a range of 0.003 to 0.006 pCi/m3.No other gamma emitting radioactivity was detected.Charcoal cartridges are installed downstream of the particulate filters and are used to collect airborne radioiodine.

The results of the weekly analysis of the charcoal cartridges are presented in Table B-3.All results were below the lower level of detection with no positive activity detected.

Thermolumines cent dosfmeters (TLDs)measure external radiation exposure from several sources including naturally occurring radionuclides in the air and soQ, radiation from cosmic origin, fallout from atomic weapons testing, potential radioactive airborne releases from the power station and direct radiation&om the power station.The TLDs record the exposure from all of these potential sources.The TLDs are deployed quarterly at 27 locations in" the environs of the D.C.Cook Nuclear Plant site.The average value of the readings of the four areas of each dosimeter (calibrated individually after each Geld exposure period for response to a known exposure and for intransit exposure)are presented in Table B-4.Those exposure rates are quite typical of observed rates at many other locations in the country.The average measurement for the 16 control samples was 3.35 mR/standard month and a range of 2.3 to 4.5 mR/standard month..The 91 indicator samples had a measurement of 3.51 mR/standard month and a range of 2.3 to 5.1 mR/standard month.The 1990 annual average in the environs of the D.C.Cook plant is at the low range of the exposure rates (1.0 to 2.0 mR/week)measured during the preoperational period.The results of the indicator and control TLDs are in good agreement and are plotted in Trending Graph 2.W Lake Michigan surface water samples from the condenser circulating water intake and from four shoreline locations.

all within 0.5 mile of the two reactors were collected daily and composited monthly for iodine-131 analysis and analyzed by gamma ray spectroscopy and composited quarterly for tritium analysis.The results of analyses are shown in Table B-5.No iodine-131 nor gamma emitting isotopes were detected.Tritium was detected in 11 of the 20 samples analyzed with an average concentration of 254 pCi/liter and a range of 170 to 340 pCi/liter.

This is slightly lower than the average concentration in 1989 of 261 pCi/liter.

During the preoperational period tritium was measured in surface water samples 19 nding Graph-4 j~V~Ig~Sk I~~~~~~~y~~~~~~~Ig e 01/90 07/90 1O/9O~8~TLD-Controi Locations TLD-Indicator Locations at concentrations of approximately 400 pCi/liter.

Naturally occurrin gamma emitting isotopes were detected by gamma ray spectroscopy.

E.r n W Water samples are collected quarterly from seven wells, all within 1000 meters of the reactors.The samples are analyzed for gamma emitters and for tritium.The results are presented in Table B-6.No gamma emitting isotopes were detected.The on-site wells 4, 5, and 6 had measurable tritium activity throughout 1990 with concentrations of 860, 977 and 583 pCi/liter respectively.

These measurements are lower than those detected during 1989 of 2300, 1930, and 1560 pCi/liter.

Tritium was measured in five of the six-teen samples at the oK-site locations with an average concentration of 172 pCi/liter and a range of 130 to 230 pCi/liter.

The annual concentrations of tritium in the seven weHs are plotted from 1979 through 1990 in Trending Graph 3.Tritium concentration in wells in the preoperational period were typically about 400 pCi/liter.

F.D Daily samples are collected at the intake of the the puriQcation plants for St.Joseph and Lake Township.The samples at each location are composited biweekly and analyzed for gross beta.iodine-131 to a sensitivity of 1 pCi/liter, and for gamma emitters.On a quarterly basis the samples are composited and analyzed for tritium.The results of analyses of drinking water samples are shown in Table B-7.Gross beta activity was measured in all twenty-five samples from the Lake Township intake with an average concentration of 4.1 pCi/liter and a range from 2.7 to 10 pCi/liter.

Gross beta activity was measured in all twenty-six samples from the St.Joseph intake with an average concentration of 3.9 pCi/liter and a range from 2.8 to 6.1 ending Graph-2 v;vv.: C"A%.+A Q: " v..-;;:.,"i:~,T}QTm Q',,:Qf::QRO+Q) fpgi~skw+TER.:~

4500 4000 3500 3000 2500 2000 1500 1000 500 0~~~~~~~~~,0 i f'~~~g~1980 1S81 1982 1983 1984 1985.1S86 1987 1988 1989 1990~w~Well-1~Well-2~0 I We 1 1-3 Trending Graph-2 (Cont.)TXUNK.:::XN;-':;GROQN9,,"%ELX"'":WATER~-:"',i 9000 g 8000 v~3 Q gj 5000 4000 3000 2OOO 1000 0 0'~~o+J'~/e~A b,+~0 s+e~~)~~~e~e,+~1980 1981 1982 1983 1984 1985~~c~Well-4 Well-5 0~~We 1 1-6~Wel ding Graph-3 1500 1000 500 0 r~~~~~~~~~~~r o1/e9 04/a9 07/e9 10/89 ol/90 07/90 10/90~4~Lake Township~St.Joseph pCi/liter.

No gamma emitting isotopes or iodine-131 were detected Tritium was measured in three of the four samples from Lak Township intake with an average concentration of 220 pCi/liter and a range of 190 to 240 pCi/liter.

Tritium was measured in one sample from St.Joseph intake with a concentration of 340 pCi/liter.

Tritium in drinking water is plotted in Trending Graph 4.There were no drinking water analyses performed in the preoperational program.Sediment samples are collected semiannually along the shoreline of Lake Michigan at the same four locations as the surface water samples.The sediment samples are analyzed by gamma ray spectroscopy, the results of which are shown in Table B-8.In November one sample was collected from each location L2, L3, L4 and L5.Gamm amma ray spectroscopy detected naturally occurring potassium-40 and thorium-228 in all the samples.The average potassium-40 concentration was 5985 pCi/kg with a range from 4930 to 7250 pCi/kg.The average thorium-228 concentration was 126 pCi/kg with a range from 70.9 to 171 pCi/kg.All the measured activities of the naturally occurring isotopes were at background levels.Cesium-137, attributed to fallout from previous atmospheric nuclear tests.was detected in three of the eight samples.The average concentration of cesium-137 was 25.1 pCi/kg with a range of 18.5 to 30.1 pCi/kg.That activity level is often observed in soils and sediments.

Milk samples are collected every fourteen days from seven farms located between 4.25 miles and 20 miles from the site.'Ihe samples are analyzed for iodine-131 and for gamma emitters.The results are shown in Table B-9.Iodine-131 was not measured in any of the 175 samples analyzed.

During the preoperational period potassium-40 was measured in all samples with a range from 520 to 2310 pCi/liter, a range comparable to that in 1990.Iodine-131 was measured in four samples collected soon after an atmospheric nuclear test with concentrations between 0.2 and 0.9 pCi/liter.

Cesium-137 was measured in numerous samples after the nuclear test with concentrations between 7 and 64 pCi/liter..

During 1990 the average potassium-40 concentration for the control locations during was 1293 pCi/liter with a range of 1070 to 1490 pCi/liter.

The indicator locations had an average concentration of 1302 pCi/liter and a range of 922 to 1950.There were no detections of iodine-131 or cesium-137 during 1990.Fish are collected semiannually, when available, from four locations in Lake Michigan in the vicinity of the site and analyzed b gamma ray spectroscopy.

Naturally occurring potassium-40 was measured in all samples with an average concentration of 2636 pCi/kg (wet weight)and a range of 684 to 3840 pCi/kg (wet weight).Cesium-137, attributed to previous atmospheric nuclear tests was measured in six of the eight fish samples at an average concentration of 37.8 pCi/kg (wet weight)and a range of 20.3 to 80.1 pCi/kg (wet weight).Grapes, grape leaves, and broadleaf vegetation are collected annually at harvest time at one on-site location and one off-site location.Naturally occurring potassium-40 was measured in all samples'ith an average concentration of 2402 pCi/kg (wet weight)and a range of 889 to 3700 pCi/kg (wet weight).Cosmogenically produced beryllium-7 was measured in three of the Ave samples with an average concentration of 1650 pCi/kg (wet weight)and a range of 1060 to 2700 pCi/kg (wet weight).26 IV.CONCLUSIONS 27 The results of the 1990 Radiological Environmental Monitoring Program for the Donald C.Cook Nuclear Plant have been presented.

The results were as expected for normal environmental samples.Naturally occurring radioactivity was observed in sample media in the expected activity ranges.Occasional samples of a few media showed the presence of man-made isotopes.These have been discussed individually in the text.Observed activities were at very low concentrations and had no significant dose consequence.

Specific examples of sample media with positive analysis results are discussed below.Air particulate gross beta concentrations of all the indicator locations for 1990 appears to follow the gross beta concentrations at the control locations.

The concentration levels are actually lower than during the preoperational period when the infiuence of atmospheric nuclear tests was being detected.Gamma isotopic analysis of the particulate samples identiQed the gamma emitting isotopes as natural products tberyllium-7 and potassium-40).

No man-made activity was found in the particulate media during 1990.No iodine-131 was detected in charcoal Qlters fn 1990.Ther moluminescent dosimeters

{TLD)measure external gamma radiation from naturally occurring radionuclides in the air and soil, radiation from cosmic origin and fallout from atmospheric nuclear weapons testing, and potential radioactive airborne releases and direct radiation from the power station.The average annual TLD results were at normal background exposure levels.Surface water samples collected monthly from Qve locations in Lake Michigan were analyzed for iodine, tritium, and gamma emitting isotopes.Only tritium was measured and the concentrations were at normal background levels.28 Ground water samples were collected quarterly at seven wells, all within 1000 meters of the reactors.The three wells within 130 meters had measurable tritium which is attributed to the operation of the plant.The tritium levels in 1990 are lower than in 1989.The highest concentration in 1990 was 1750 pCi/liter as compared to 3600 pCi/Uter measured in 1989)The tritium levels in ground water have been plotted for the last decade and indicate decreasing levels of tritium.No gamma emitting isotopes were detected.Samples are collected daily at the intakes of the drinking puriQcation plants for St.Joseph and Lake Township.Samples composited biweekly are analyzed for iodine-131, gross beta, and for gamma emitting isotopes and analyzed quarterly for tritium.No iodine-131 or gamma emitting isotopes were detected.Gross beta was measured in all Qfty samples at normal background concentrations.

Tritium was measured in four of the eight samples with background levels that were, lower than those measured during 1989.Sediment samples can be a sensitive indicator of discharges from nuclear power stations.Sediment samples are collected semiannually along the shoreline of Lake Michigan at four locations in close proximity of the reactors.The samples were analyzed by gamma ray spectroscopy.

In 1990 only naturally occurring radionuclides were measured.There is no evidence of station discharges affecting Lake Michigan, either in the sediments or in the water, as previously discussed.

Milk samples were collected every fourteen days from seven farms up to a distance of 20 miles from the site.Me samples were measured for iodine-131 and for gamma emitting isotopes.Although I-131 was measured during 1989 there were no measurements of iodine-131 in milk in 1990.Potassium-40 was measured in all mQk samples at normal background levels.Fish samples collected in Lake Michigan in the vicinity of the nuclear plant were analyzed by gamma ray spectroscopy.

The only gamma emitting isotope measured was cesium-137 which was in very low concentrations, typical of those found in other parts of the country and which are attributed to previous atmospheric nuclear tests.Food products.consisting of grapes, grape leaves, and broadleaf vegetation were collected and analyzed by gamma ray spectroscopy.

The only gamma emitting isotope measured was cesium-137, again attributed to previous atmospheric nuclear tests.The results of the analyses have been presented.

Based on the evidence of the radiological environmental monitoring program the Donald C.Cook nuclear plant appears to be operating within regulatory limits.Tritium in five on-site wells appears to be the only radionuclide which can be directly correlated with the plant.However, the associated ground water does not provide a direct dose pathway to man.30 V.REFERENCES l.United States Nuclear Regulatory Commission, Regulatory Guide 4.8"Environmental Technical Specifications for Nuclear Power Plants", December 1975.2.Indiana Michigan Power Company, D.C.Cook Technical Specifications, Units 1 and 2.3.USNRC Branch Technical Position,"Acceptable Radiological Environmental Monitoring Program", Rev.1, November 1979.4.Eberline Instrument Company.Indiana Michigan Power Company,"D.C.Cook Nuclear Plant Radiological Environmental Monitoring Program-1974 Annual Report", May 1975.5.Data Tables from 1985-1988 CEP-AEPSC Annual Radiological Environmental Monitoring Program Reports.6.United States Nuclear Regulatory Commission, Regulatory Guide 1.4"Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants", April 19?5.7.United States Nuclear Regulatory Commission, Regulatory Guide 1.21"Measuring, Evaluating, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effiuents from Light-Water-Cooled Nuclear Power Plants, April 1974.

APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM SMNMARY RADIOLOGICAL ENVlRON MONITORING PROGRAM

SUMMARY

INDIANA MICHIGAN PONER COMPANY-DO~COOK NUCLEAR PLANT DOCKET NO.~15/BERRIEN COUNTY JANUARY 1 to DECEMBER 31.1990 MEDIUM OR PATHWAY 1%7fhL NUMBER SAMPLED OF ANALYSES UNII'F MEASUREMENII PERFORMED MEAN ta/b)RANGE NhME MEhN DISHPAN CE AND DIRECIION RANGE CONIROL LOCATION NONROVIINE MEhN REPORIED RANGE MEASUREMENT hlr Iodine (pCl/m3)1-131 520-(0/312)N/A N/A-(0/208)Airborne Partlculatce (1E-03 pCl/m3)'ross Beta 510 (Weekly)17.2(306/306)

(5.1-31)NBF 16.0 ml SSW 18.4(51/51)

(4.8-36)17.7(204/204)

(4.8-36)Gatnma 40 Be-7 40 73.3(24/24)

(40.6-99.6)

SBN 24 mi SE 83.2(4/4)(52.3-103) 74.9(16/16)

(13.3-103)

K-40 40 4.63(2/24)

(3.21-6.04)

NBF 16.0ml SSW 6.74(1/4)5.76(2/16)

(4.77-6.74)

Direct Radiation Ganuna 107 (mR/Standard Dose Month)Quarterly 3.51(91/91)

(2.3-5.1)11 3.8 ml S 4.28(4/4)(3.6-5.1)3.35(16/16)

(2.3-4.5)la/b)RaUo of samples with detectable acuvlty to total number ol'samples analyzed.

RADIOLOCIchr.

F2AURONMENTAL MONITORINa PROGRAM

SUMMARY

INDIANA MICHIGAN POWER COMPANY-DONALD C.COOK NUCLEAR PLANT DOCKET NO.50-$15/~16 BERRIEN COUNTY JANUARY 1 to DECEMBER 31, 1990 MEDIUM OR PATHWAY'1QTAL NUMBER SAMPLED OF ANALYSES UNII'F MEASUREMENII PERFORMED MEAN Ia/b)RANGE NAME MEAN DISI'ANCE AND DIRECI1ON RANGE CONIROL LOCATION NONROVIINE MEAN REPORIED RANGE MEASUREMEND Snrlaee Water (pCl/II ter)H-3 24 Gamma 65 K-40 65 71.5(2/65)

(66.3-76.6)254(1 1/20)(170-340)~0.33ml SSW 71.5(2/13)

(66.3-76.6)

L-5 0.1 ml NNE 265(4/4)(190-340)-(0/0)-(0/0)Ground Water (pCl/liter)

Gamma 28-(0/28)N/A N/A-(0/0)H-3 28 580(14/28)

(120-1700)

Well 5 O.l ml WNW 977(3/4)Onslte (530-1700)-(0/0)1-131 52 Drhddng Water Gross Beta 52 (pCI/liter) 4.0(52/52)

(2.7-10)-(0/52)N/A N/A LVP 0.40 ml S 4.1(26/26)

(2.7-10)-(0/0)-(0/0)Gatnma 52 H-3-(0/52)250(4/8)(190-340)N/A N/A STJ 9.0 mt NE 340(l/4)-(0/0)-(0/0)(a/b)o of samples vrtth detectable acuity to total number of sampl RADIOLOGICAL ENVIRONME MONITORING PROGRAM SUMSLRY INDIANA MICHIGAN POWER COMPANY-DO.COOK NUCLEAR PLANT, DOCKET NO.50-915/BERHlEN COUNIY JANUARY 1 to DECEMBER 31, 199Q MEDIUM OR PhTHWhY SAMPLED UNIT OF MEASUREMENT

%OTAL NUMBER OF ANALYSES PERFORMED MEAN ta/b)RANGE NhME MEhN DISTANCE AND DIRECfION RANGE CONIROL UX'hllON MEhN RANGE NON ROUIINE REPORTED MEASUREMFNT:

Sediment (pCl/kg wet)Gatmna 8 K4Q 8 5985(8/8)(4930-7250)

L-5 0.35 ml NNE 6380(4/4)(5700-7060)

No Contxol Cs-137 8 25.1(3/8)(18.5-30.1)

L-5 0.35 ml NNE 30.1(1/2)No Control Th-228 8 126(8/8)(70.9-171)

L-4 0.33mi SSN 135(2/2)(116-154)No Control Mlle (pCI/liter)

Gamma 175 K-40 175 1302(125/125)

(922-1950)

Shuler 4.25 mt SE 1376(25/25)

(922-1950)1293(50/50)

(1070-1490) l-131 176-(0/125)N/A-(0/60)(a/b)Ratio of samples with detectable acuvtty to total number of samples an~ed.

RADIOLOGICAL ENVIRONMENTAL MONITOIUNG PROGRAM

SUMMARY

INDIANA MICHIGAN POWER COMPANY-DONALD C.COOK NUCLEAR PLANT DOCKET NO.HM15/QM16 BERRIEN COUNTY JANUARY 1 to DECEMBER 31, 1990 MEDIUM OR PATHWAY%FATAL NUMBER SAMPLED OF ANALYSES IUNrr OF MEASUREMERQ PERFORMED MEAN{a/b)RANGE NAME MEAN DISTANCE AND DIREC11ON RANGE CONIROL LOCATION MEAN RANGE NONROUTINE REPORfED MEASUREMENI".

Phh (pCl/kg wet)K-40 2636(8/8)(684-3840)

OFS4outh Sml N 3575(2/2)(3310-3840)

-(0/0)Cs-137 37.8(6/8)(20.3-80.1)OFS-North 3ml N 80.1(1/1)-(0/0)Pood/Vcgetathm Gamma (pCl/kg wet)Be-7 K-40 1650(3/5)(1060-2700) 2402(5/5)(889-3700)

Sector H Variable Sector E Variable 2700(1/2)2830(2/2)(2300-3360)

-(0/0)-(0/0)(a/b)o of samples wtth detectable actlvlty to total number of sampl ed.

APPENDIX B DATA TABLES 38 TABLE B-1 INDIANA MICHIGAN POWER COMPANY-DONALD C.COOK NUCLEAR PLANT CONCENTRATIONS OF GROSS BETA EMKIKRS IN%EEKLY AIRBORNE PARHCULA'IKS Results ln Units of 10-3 pCI/m~t 2 sigma COLUEIION h-1 DATES h4 h4 STA'GON CODES h-5 h4 Cobma Daaaghc Neo Buf South Bend hverage k2 e.d.01/08/90 01/15/90 01/22/90 01(29(90 28t 2 25k 2 16+2 19%2 30%2 2912 26%2 23%2 17+2 16t2 19t2 1842 29t 2 26k 2 18+2 19%2 28k 2 26k 2 17t 2 18+2 27k 2 28%2 29%2 24k 2 24t2 24%2 16%2 18%2 18t2 20%2 20%2 20%2 36t 2 20%2 2li 2 20 k 2 35k 2 22k 2 l8%2 17%2 30%6 24k 4 18%3 19%2 M 02/05/90 02/12/90 02/19/90 02/26/90 18%2 15m 2 18%2 17'17t2 1312 16%2 15%2 172 2 18%2 1722 1612 15%2 15m 2 15m 2 15m 2 16%2 1512 1712 19%2 19%2 18%2 20%.2 l922 19%2 1712 17%2 162 2 17%2 182 2 1722 16%2 15%2 23k 2 22k 2 21%2 17%2 16t 3 161 2 16%5 2IR 2 191 3 l8%2 171 3 03/05/90 03/12/90 03/19/90 03/26/90 04/02/90 21%2 18%2 20%2 17%2 13%2 14%2 12%2 12%2 13%2 19%2 19%2 18%2 9k 1 10%1 11%2 20%2 19%2 14%2 13%2 12%2 13t 2 l7%2 18t 2 IO+1 10t 1 22k 2 15t 2 14%2 19%2 12%2 20%2 22%2 14%2 14%2 1222 12%2 18%2 18%2 ll k2 1022 23k 2 16%2 12t 2 18m 2 11%2 23k 2 l6%2 l5%2 17'12%2 21%3 15%3 13'18%2 lit 2 gtggt~hvg.

18%10 18%11 17%10 18%10 17%10 18%8 18%9 182 10 20k 1S 19%11 18%2 4 2 Sigma B-l{~)INDIANA MICHIGAN POWER-DONALD C.COOK NUCLEAR PLANT CONCElflRA1IONS OF GROSS BETA EMITIERS 1N%EEKLY AIRBORNE PAR11CULATES Results in Units of 10-3 pC)/m>k 2 sigma COLXZCTION h-1 DATES Sl'ATlON CODES h-5 hA Colo ena Dawagtac Neer BuE South Send hverage k 2 s.d.04/09/90 16%2 16%2 14%2 16%2 04/16/90 18+2 15%2 8%2 15%2 04/23/90 (a)04/30/90 16+2 16%2 14%2 14%2 15+2 16%2 18%2 17m 2 14+2 16 4 2 15t 2 16t 2 17%2 15+2 16 2 2 15%2 15%2 17t 2 18%2 162 2 17m 2 172 2 16t 2 16%6 16+3 05/07/90 05/14/90 05/21/90 OS/28/90 151 2 14m 2 6t 2 at 2 17%2 14 k2 14%2 15%2 Sx2 6a2 9i2 622 16%2 15%2]3+2 8a 1 6i 2 6k 2 9k 2 9i 2 14%2 13%2 13%2 13%2 St 2 10+2 9k 2 10t2 16 2 2 14t 2 8%2 10 2 2 15%2 15+2 llk 2 10t 2 15%2 142 2 10+2 10%2 161 2 13'7+5 9X 3 06/04/90 06/11/9Q 06/18/90 06/25/90 07/02/90 9k 2 10%2 19%2 6i 2 14%2 9a2 lie 2 18%2 8t 2 16+2 10%2 10+2 8%2 9k=2 9%2 11%2 10%2 9i 2 10%2 11 t 2 16%2 16%2 17%2 7k 2 15%2 9%2 7%2 9t 2 12 2 2 10 k 2 17%2 17%2 17%2 18%2 18%2 9%2 12+2 15+2 8+2 16+2 12'11%2 19+2 11+2 15+2 12%2 12t 2 16w 2 9t2 19'10k.3 ll a 2 16%7 9k 4 17%3 Qus~hvg.1$%9 18k.8 11%8 12%8 1%X 8 12%9 1St 8 X 2 Sigma 1st 6 14%8 14%7-18%2 la)Samples inadvertently lost at the laboratory TABLE B-1 (cont.)INDIANA MICHIGAN PO%ER COMPANY-DONALD C.COOK NUCLEAR PLANT CONCENNA'IIONS OF GROSS BETA EMITIERS IN WEEKLY AIRBORNE PARIICULATES Results In Untts of 10 3 pCI/m3 2 2 sfgma COLUM h-1 DATES h4 SI'A'GON CODES h-5 A4 Coloma Dawaghc Ne'er Buff South Bend hverago R 2 s.d.0?/09/90 07/16/90 07/23/90 07/30/90 14%2 13%2 14%2 15+2 15%2 14%2 l2%2 13%2 152 2 13%2 16%2 13%2 15%2 12%2 ilk 2 l3i 2 13%2 13%2 16%2 16+2 13+2 17%2 13%2 14+2 12%2 15%2 17%2 18%2 14%2 17%2 17%2 16+2 16%2 13%2 17%2 21+2 16a 2 15m 2 17%2 18%2 14+3 13+2 15+4 17%4 08/06/90 0&/13/90 08/20/90 08/27/90 09/03/90 16'15%2 14%2 12%2 27*2 10+2 15%2 14%2 9k2 28a2 11+2 16%2 14 t 2 ll k2 27 k 2 lp+2 15%2 15'll k 2 26a 2 12+2 15%2 15k 2 8%2 30%2 lit 2 1012 13+2 l2%2 17%2 1322 132 2 16%2 (a)1622 9k 2 11%2 611 26%2 26%2 2522 19%3 18%2 16+2 12%2 27k 2 13%2-16%2 17%2 l3%2 27k 2 13+6 15%4 15%3 lpt 4 27k 3 09/10/90 l9+2 20%2 20%2 202 2 21k 2 l9t 2 21%2 1922 23k 2 21%2 20%3 09/17/90 18%2 20a2 20%2 24k 2 19%2 22k 2 l5%2 19%2 18%2 20%2 20+5 09/24/90 13*2 12%2 12%2 124 2 12k 2 Ilk 2 13%2 11%2 14t 2 11%2 l2%2 1P/Pl/90 22m 2 20+2 26+2 22'21 t 2 19m 2 19+2 21X2 23+2 311 3.221 7 let 9 1st 10 16a9 16+11 16%11 15+10 16%9 15X lp 1st 9 18+ll 16%2 a 2 Stgma (a)Vo ge.

T S-1 (~.)lNDIANA MICHIGAN POWER-DONALD C.COOK NUCLEAR PLANT CONCERIRA1IONS OF GROSS BETA EMITIERS lN%EEKLY AIRBORNE PARTICULATES Results in Untts of 10-3 pCl/m3 2 2 sigma COLU~CTION h-1 DhTES h2 STATION CODES h-5 h4 Cobma Dcwsgfac New Std'outh Send hvexage R2 s.d.10/08/90 10/15/90 10/22/90 10/29/90 16%2 112 2 16%2 18+2 17%2 17%2 10%2 11%2 23+2 17%2 16%2 18%2 16%2 16%2 14 k 2 12%2 18%2 18%2 18t 2 19%2 16+2 llk 2 13%2 17%2 17~2 15+2 1222 11%2 17 t2 16%2 19+2 17%2 16%2 12%2 19%2 18+2 17%2 13%3 172 2 17%2 16%1 12%2 17')8a 2 ll/05/90 l l/12/90 l l/l9/90 1 l/26/90 12/03/90 27k 2 18a 2 29'30m 2 18'28k 2 23 f 2 29 f 2 29 X 2 19a2 27%2 25a2 26a2 2812 20+2 28%2 24k 2 30'28m 2 20+2 29%2 23k 2 3lt 2 27k 2 17%2 26k 2 28%2 31%5 21%2 20%2 23%2 29%3 27k 2 26%2 26%2 26%2 28*2 27k 2 27%2 2922 28%2 17%2 20a2 21%2-21%2 29k 2 25k 2 26k 2 24k 2 21%2 27'24'28+4 28%3 19%3 12/10/90 12/17/90 12/24/90 12/31/90 23k 2 21%2 30%2 24k 2 24 k 2 23 k 2 29 X 2 28%2 26 k 2 24 k 2 27 k 2 27%2 25k 2 23k 2 28%2 24k 2 23k 2 22%2 31%2 24k 2 23k 2 23k 2 28%2 24k 2 23%2 20 R 2 27 2 2 19 4 2 23%2 23k 2 2312 4.8%1.2 28+2 302 2 9801 0.08(a]26 k 2 22k 2 22k 2 2?k 2 16%4 24k 2 21%ll 29%3 24%8 Quarter hmage 22 i 12 L 2 s.d.Annual hverage 17%12 k 2 s.d.23%12 2SR 11 23%10 22k 12 21%11 21 k 10 22%1S 17%12 174 12 17%12 17%1$lVE ll 17%10 17%12 21%14 21%10 22k 2 18 k 12 18 k 11 1VR 1 (a)Low sample volume;not Included In averages.Fttter ltght tn dtspoettton.

TABLE B-2 INDIANh MICHIGAN POWER COMPANY-DONALD C.COOK NUCLEAR PLANT CONCENTRA'IIONS OF GAMMA EM11TERS~IN QUARIERLY COMPOSrIES OF AIRBORNE PARIICULA'IES Results ln Untts of 10-3 pCI/m~k 2 sigma Stathms Nuelldes Hrat Quarter 01 1 Second Quarter 04/er/oooo

/90 Third Quarter Or 02/00-10/01 Fourth Quarter 10 01/00.1Q/Si/90 hvexage 12 ad.h-1 Be-7 K-40 Cs-134 Cs-137 82.2 t 8.2<3<0.2<0.2 97.0 k 9.7<6<0.2<0.3 60.8+5.1<4<0.1<0.2 68.2 k 7.0<5<0.3<0.3 74.6 2 39.4 h4 Be-7 K-40 Cs-134 Cs-137 80.1 R 8.0<4<0.2<0,2 99.6k 10.0<5<0.2<0.3 49.3 a 4.9<<6<0.2<0.3 81.2%8.1<6<0.3<0.3 77.6 a 41.7 h-3 Be-7 K-40 Cs-134 Cs-137?2.4 2 7.2<4<0.2<0.2 73.1 k 7.3<6<0.4<0.3 43.4 k 4.3<10<0.3<0.3 76.7k 7.7<7<0.3<0.3 66.4 t 30.9 Be-7 K-40 Cs-134 Cs-137 85.3+8.6<3<Q.l<0.1 85.3%8.5<7<0.3<Q.3 49.6i 6.0<6<0.2<0.2 79.52 7.9<4<0.2<0.2 74.9 2 34.2 h-5 Be-7 K-40.Cs-134 Cs-137 77.0%7.7<3<0.2<0.2 94.0%9.4 6.04 k 2.19<0.2<0.2, 40.62 4.1<9<0.3<0.3 96.2 4 9.6<10<0.4<0.4 77.0 2 51.4 6.04 k.2.19~7ypl LLDs are found tn Table B-12.

B-2 (Gant.3 INI)lhNA MICHIGhN POWER-DONhLD C.COOK NUCKZhR PLhNT CONCENTRA'IIONS OF GAMMA EMITIRS'N QUARIERLY COMPOSITES OF AIRBORNE PARIICULA1ES Results in Units of 10-3 pCI/m3+2 sigma Nucildes FIrst Quarter 01 01 Secortd Quarter 04/ThIDI Quarter Cr lXR/00-10 1 Fourth Quarter 10 01 la/Sl Be-7 K-40 Cs-134 Cs-137 85.0%8.5 3.21 k 1.22<0.1<0.2 77.4 2 8.3<20<<0.4<0.4 44.8%4.5<5<0.2<0.2 71.5%7.2<4<0.2<0.2 69.7%35.0 3.21 k 1.22 Be-7 K-40 Cs-134 Cs-137 90.6%9.1<4<0.2<0.2 99.64 10.0<6<0.2<0.2 39.8 k 4.0<4<0.2<0.2 78.7 k 7.9<5<0.3<0.2 77.2 S 52.7 Dowaghc Be-7 K-40 Cs-134 Cs-137 82.6*8.3<7<0.2<0.2 81.8%8.2 6.10%2.76<0.2<0.2 48.3 k 4.8 3.44+l.?7<0.2<0.2 9Q.7 a 9.1<10<0.4<0.4 75.9 2 37.6 4.77 a 3.76 New BuIMo Be-?K-40 Cs-134 Cs-137 102 4 10<6<0.2<0.2 92.1 k 9.2 6.74 k 3.28<0.4<0.3 45.4 k 4.5<5<0.3<0.3 13.3t 3.9<3<Q.2<0.2 6.32 2 82.8 6.74 4 3.28 South Bertd Be-7 K-40 Cs-134 Cs-137 103 4 10<4<0.2<0.2 94.9 k 9.5<7<0.3<0.3 52.3a 5.2<10<0.4<0.4 82.7 R 8.3<5<0.3<0.2 83.2 k 44.5'Fypical LLDs are found in Table B-12.

INDIANA MICHIGAN POWER COMPANT-DONALD C.COOK NUCLEAR PLANT CONCENTRATIONS OF IODINE-131 IN WEEKLY AIR CARIRIDGE SAMPLES Results tn Units of 10-~pCl/m~2 2 sigma COLLRCT105 h-1 DATES STA'IION CODES h-5 hA CoIacaa Dowaghc New Bufmalo South Bc'1(08/90 01/15/90 01/22/90 01/29/90<20<20<20<20<2Q<20<20<20<20<2Q<20<20<20<10<20<10<20<1Q<20<10<10<10<20<20<10<20<10<20<10<20<10<20<10'10<10<20<10<10<10<20 02/05/90 02/12/90 02/19/9Q 02/26/90<20<-20<10<10<20<20<10<10<20<10<10<1Q<20<10<10<10<10<10<10<10<20<10<20<10<20<10<20<10<20<10<20<10<10<10.<.10<10<20<10<20<10 03/05/90 03/12/90 03/19/90 03/26/90 04(02/90<20<10<20<10<20<20<10<20<10<20<20<<10<20<10<20<20<10<20<10<20<10<10<10<10<10<20<20<10<10<20<20<20<10<10<20<20<20<10<10<20<20<10<e<10<10<10<20<10<10<20

~(cant.}INDIANh MICHIQAN POWER hNT-DONhlS C.COOK NUCLEAR PLANT CONCEW1RAZIONS OF IODINE-131 IN WEEKLY AIR CARMDGE SAMPLES Results in Units of 10 3 pCt/ms k 2 stgms COIN%'IION h-1 DhTES STATION CODES h-5 Cehxaa Dowaghe New ButMo South Bend 04(09/90 04(16/90 Q4/23/9Q 04/30/90<20<20<20<9<20<2Q<20<10<20<20<20 c 10<20 c 20<20<10<10<10<10<10<10<20<20 c 10<10<20<20<20<10<20<20<20<<10<10 c 10<20<10<20<20<20 05/07/90 05/14/90 o 05/21/90 05/28/90<20<20<<10<20<20<20<10 c 10<20<20 c 10<10<20<20<10<10<10<10<10<10<20<10<2Q (20<2Q<10<30 c 20<20<10<20<20<20<<9<10<20<20<10<20<20 06(04/90 Q6/1 I/9Q 06/18/90 06/25/90 07/02/90<20<20<10<20<10<20<20<10<20 c 10<20<20<10<20 c 10<20<20<10<20<10 c 10<10<10<<10 c 10<20<20<10<20<20<20<20<10<20<20<20<20<10<20<20<10 c 10<10<10<10<20<20<10<20<20 ThBLE B-3 t~)INDIhNh MICHIQhN POWER COMPACT-DONhLD C.COOK NUCLEhR PLhNT CONCENIRhlIONS OF IOD1NE-131 1N WEEKLY AIR ChIGRIDGE ShMPLES Results tn Urdts of 10-3 pCt/m~4 2 sigma COLLECTION h-1 DhTES STh1ION CODES h-d h4 Coiama Dowagac New BufKalo South Sead 07/09/90 07/16/90 07/23/90 07/30/90<20<10<20<20<20<10<20<20<20<10<20<20<20<10<20<20<10<7<10<10<20<7<10<20<20<7<10<20 (20<7<10<20<10'<6<10<10<20<7<10<20~UiJJS 08/06/90 08/13/90 08/20/90 08/27/90 09/03/90<20<10<<20<<20<10 (20<<10<20<20<10 (20<10<20<20<10<20<10<20<20<10 (10<10<10<10<8<10<10<10<10<20<10<10<20<10<20<10<10<10<10<20<20<10<10-<10<10<10<10<10<10<20 09/10/90 09/17(90 09/24/90 10/01/90<20<20<60<20<2Q<2Q<60<20<2Q<20<60<20<20<20<60<20<10<10<50<10<20<20<20<20<20<20<20<20<20<20<20<20<10<20<10<20<20<20<20<20

~(Ccat.)INDlhNA MICHIQAN POWER-DONALD C.COOK NUCLRhR PldWT CONCENTRATIONS OF IODINE-131 IN%EEKLY AIR CARIKDGE SAMPLES Results ln Units of 10-3 pCl/m>k 2 sigma COLLECTION A 1 DATES Sl'A'IION CODES h-I h4 Coiaua Dowagfac New Buffo 8oaQa Bead E 10/08/90 10/15/90 10/22/90 10/29/90<20<20<20 c 10<20<20<30<20<80(a)<2Q<2Q<10<20<20<20<10<10<1Q<10<10 c 10 (20 c 20<20<1Q<20<20<20<10<20<<20<20<10<20<10<10-<10<20<20<20 ll/05/90 ll/12/90 ll/19/90 ll/26/90 12/03/90<20<20<20<30<10<20<20<20 c 30<10 (20<20<20 c 30 c 10<20<20<10 c 30 c 10<10<10<10<20<10<10 c 20<10 c 10<10<10<20<10<10<10<30<20<<10<10<10<7<20<7<10<10<10<20<10<10<10 12/10/90 12/17/9Q 12/24/90 12/31/90<20<20<20<20<20<20<20<20<20<20<20<20<20<20<20<20 c 10<10 c 10<10<20-<20 c 10<20<20 c 20<20<20<20<10<20<10<20<20<600{b)<10<20<20<20<50 (a)LLD not met due to low sample volume.Unit was out for repatrs.(b)LLD not met due to low sample volume.

TABLE B-4 INDIANA MICHIGAN POWER COMPANY-DONALD C.COOK NUCIZAR PLANK'IRECT MEASUREMENTS

-QUARIKRLY TIN RESUL'IS Results tn Untts of mR/standard month SThTION CODES FIRST QUARTER Ol 20 NHN 22 90 SECOND QUARTER 04 22 9007 29 90 THIRD QUARTER 07 29 90-10 28 90 FOURTH QUARTER 10 28 9001 27 91 hVERAGE i 2 s.d.A-1 A-2 A-3 A-4 A-5 A-6 A-7 A-8 A-9 A-10 A-11 A-12 OFS-1 OFS-2 OFS-3 OFS-4 OFS-5 OF$4 OFS-7 OFS-8 OFS-9 OFS-10 OFS-11 NBF SBN DOW COL hverago i 2 s.d.3.3k 0.2 3.6i 0.3 3.6i 0.3 3.3%0.3 3.4 i 0.4 3.3A 0.3 3.6%0.1 3.4%0.2 3.8 t 0.3 3.3i 0.2 2.8 I 0.3 3.8 i 0.2 3.5 i 0.4 3.6 i 0.2 3.7 R 0.2 4.0i 0.3 3.8 t 0.3 3.8%0.2 3.5 i 0.1 4.6i 0.4 4.04 0.1 3.5i 0.2 4,4k 0.3 39i 03 3.6i 0,2 3.1i 0.1 3.2k 0.2 0.7 3.2 t 0.1 3.2i 0.2 3.3 i 0.1 2.9+0.2 3.1 i 0.1 3.0i O.l 3.3i 0.1 3.2t 0.1 3.6i 0.2?Sk 0.1 3.4 x 0.1 3.6 i 0.3 3.2 i 0.2 3.4 i 0.1 3.6 i 0.2 3.7 i 0.3 3.6i 0.3 (a)3.3k 0.1 4.1 i 0.3 3.9 i 0.2 3.5 i 0.2 4.0i 0.4 3.5i 0.4 3.51 0.2 2.9i 0.1 2.9i 0.1$.4i 0.7 3.8i 0.1 4.0*0.3 3.7i 0.2 3.6i 0.2 3.8 i 0.1 3.5 k 0.2 3.8 S 0.2 3.9 i 0.2 4.1i 0.4 3.7 i 0.3 4.2 t 0.5 4.1 i 0.4 3.9 i 0.2 4.1 t 0.3 4.3i 0.4 4.6i 0.2 4.6R 0.3 5.1 i 0.4 4.1 t 0.3 4.9 t 0.3 4.3 a 0.3 4.1 t 0.3 5.1 X 0.4 4.2k 0.3 4.6i 0.4 3.7 i 0.2 3.7 i 0.2 4.1%0.9 2.5i 0.3 2.8+0.3 2.8i 0.2 2.3i 0.2 2.5%0.3 2.4 A 0.2 2.7 i 0.4 2.6 i 0.4 2.8 i 0.4 2.5i 0.3 2.8%0.3 2.9k 0.2 2.7i 0.5 2.8+0.3 3.3 i 0.7 3.1 t 0.4 3.0 i 0.4 3.8 R 0.5 2.8 t 0.5 3.6i 0.5 3.2 i 0.4 2.6 t 0.4 3.6 i 0.4 3.0*0.3 3.2 i 0.4 2.4 A 0.2 2.3 i 0.2 3.2 i 1.1 3.4 i 1.0 3.4 i 0.8 3.0 i 1.1 3.2 t 1.1 3.1 t 1.0 3.4%1.0 3.3+1.1 3.6 i 1.1 3.1 k 1.1 3.3i 1.3 3.6 i 1.0 3.3 i 1.0 3.5 t 1.1 3.7 i 0.8 3.9 i 1.2 3.7 i 1.2 4.2 t 1,6 3.4 L 1.1 4.3 i 1.1 3.9 k 0.9 3.4 i 1.2 4.3 i 1.3 3.7 i 1.0 3.?k 1.1 3.0%1.1 3.0 X 1.2 S.S 0~S month 30.4 days.{a)re cage and enure telephone pole mtsslng at ume of ILD mcus ge.

TABLE B-5 INDIANA MCHIGAN POWER hNV-DONhLD C.COOK NUCLEAR PLANT-'ONCENIRA11ONS OF 1ODINE.'IRfBUM AND GAMMA EMTIKRS'N SURFACE WATER Results tn Units of pCl/liter k 2 signa STATION 1-1$1 Ll (Condenser Circ.)Ol/ll/90 02/08/90 03/08/90 04/05/9Q 05/03/90 05/31/90 06/28/90 07/20/90 08/23/90 Q9/2Q/90 10/18/90 ll/16/90 12/13/90<0.9<0.3<0.3<0.2<0.2=<<0.3<0.3<0.1<Q.2<0.2<0.2<0.2<0.2<60<60<60<40<70<80<40<50<50<60<50<<50<100<100<100 (100<200 I 2 (South Comp)Ol/ll/90 02/08/90 03/08/90 04/05/90 05/03/90 05/31/90 06/28/90 07/26/90 08/23/9Q 09/20/90 10/18/90 ll/16/90 12/13/90 (a)<0.3<0.2<0.2<0.4<0.6<0.2<0.1<0.3<0.2<0.2<0.3<0.1<80<90<40<90<50<200<60<60<50<50<90<40<100 170%6Q 300 k 70<<200 Typical LLDs are found ln Table B-12.All other gamma emltters were below<<LLD.(a)Sample not available due to tce on the shoreline.

TABLE B-5 (Cont.l INDIANA MICHIGAN POWER COMPhNY-DONhLD C.COOK NUCLEAR PLANT CONCERIRATIONS OF IODINE.'IBlTIUM AND (dLMMA EMITIERS'N SURFACE WATER Results ln Units of pCl/lt ter*2 stgma STATION K-40 IrS (North Comp)01/ll/90 02/08/90 03/08/90 04/05/90 05/03/90 05/31/90 06/28/90 07/28/90 08/23/90 09/20/90 10/18/90 il/15/90 12/13/90 (a)<0.2<0.3 (0.2<0.2<0.3<0.2<0.2<0.1 (0.2<0.2 (0.2<0.2<70 (60<70<50<40<50<100<<50<70<<100<100<40 22Q k 80 170 2 60 320 k 100 24Q%80 (South 600)Ql/11/90 02/08/90 03/08/90 04/05/90 05/03/90 05/31/90 06/28/90 07/28/90 08/23/90 09/20/90.10/18/90 11/16/90 12/13/90 (a)<0.3<<0.3<0.2<0.2<0.3<0.2<0.1<0.2<0.2 (0.2 ,<03<0.1<100 76.6 a 30.1<60<<100<60<40 66.3 k 25.6<100<100<50<60<60 23Q 4 8Q 250 a 100 190%100<200 T ypical LLDs are found in Table B-12.All other gamma emitters werc below<<LLD.(a)Sample not avatlable due to lce on the shoreltne.

TABLE B-5 (Cont.i INDIANA MICHIQAN POWER hNY-DONhLD C.COOK NUCLEAR I%AÃI'ONCENIRA'GONS OF IODINE, TRITIUM AND GAMMA EMITIKRS'N SURFACE WATER Results ln Units of pCl/liter k 2 sigma STATION LS (North 500)01/ll/90 02/08/90 03(08/90 04/Q5/90 05/03/90 05/31/90 06/26/90 07/26/90 08/23/90 09/20/90 10/18/90 ll/15/90 12/13/90 (a)<0.3<Q.S<0.2<0.2<<0.4<0.3<0.1<0.2<0.2<0.2<0.3<0.2<60<90<70<100<50<70<50<80<60<50<50<1QQ 230 4 80 300 k 90 190 k 100 340 a 90 7yptcal LLDs are found ln Table B-12.(a)Sample not avaihbte due to ice on the shoreline.

TABLE B 6 INDIANh MICHIGAN POWER COMPANY-DONhLB C.COOK NUCLEAR PLANT CONCENIRATIONS OF TRGIUM AND GAMMA EMTIKRS'N QUARTERLY GROUND WATER Results in Units of pCI/liter k 2 slgrna SThTION Collection Date I-181 Gama'Well-1 Rosemary Beach Well-2'Ihclnlng Center Well-S Flrearnrs Range Well-4 Onslte 02/03/90 05/06/90 08/05/90 ll/03/90 Q2/Q3/90 05/06/90 08/05/90 11/03/90 02/03/90 05/06/90 08(05(90 ll/03/9Q 02/04/90 05/06/90 08/05/90 11/04/90<O.l<0.1<O.l<0.1<0.2<0.2<O.l<O.l<0.2<Q.l<0.2<0.1<0.2<0.2<O.l<O.l<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<ILD<ILD<100<200<200 230 2 80 130 a 80<200<200<90<200<200 170 t 100<90 1450 2 500 320 R 100<1000 810%80 Well-d Onslte WeII-6 Onslte Well-7 Qvingston Beach hvaage t 2 a.d.02/04/90 05(06/90 08(05/90 11/04/90 02/04/90 05/06/90 08/05/90 11/04/90 02/03/90 05/06/90 08/05/90 ll/03/90<0.2<0.1<0.1<0.1<0.2<0.3<O.l<O.l<0.2<0,2<O,l<0,1<ILD<ILD<LLD<LLD<ILD<ILD<ILD<LLD<LLD<LLD<LLD<LLD 1700 R 500 700 R 100<1000 530 2 80 1300 k 500 260 k 100<1000 190 k 1QO 210 R 90<200<200 120 k 60 d80%1078'Pyplcal LLDs are found ln Table B-12.

TABLE B-7 INDIANA MICHIQAN PO%ER C-DONALD C.COOK NUCLEAR PLANT CONCENTRA'IIONS OF GROSS BETA, lODlN UM AND GAMMA EMHTERS'N DRINKING WATER Results ln Units of pCl/liter k 2 sigma COLLI"CTION DATE Late Temaship Ql/11/90 01/25/90 02/08/90 02/22/90 03/08/90 03/22(90 04/05/90 04/19/90 05/03/90 05/17/90 05/31/90 06/14/90 06/28/9Q 07/12/90 07/26/90 08/09/90 08/23/90 09/06/90 09/20/90 10/04/90 10/18/90 ll/01/90 ll/15/90 ll/29/90 12/13/90 12/27(90 4.0 i 3.7 4 3.6 i 1.0 1.0 IOX 2.0 5.8 i 3.2 k 3.5 i 3.8 i 3.0 i 1.1 1.0 0.9 1.0 1.0 3.5i 1.0 4.0%1.1 2.7X 0.9 5.1 i 1.2 3.3 i 0.9 4.2 i 3.4 i 3.2 k 3.9 i 5.0 x 4.2 k 3.3 i 2.9 i 3.8 i 4.3 i 4.6 a 4.4 k 1.1 1.1 0.9 1.0 1.1 1.0 1.0 1.0 1.0 1.Q 1.1 1.0 2.8 4.1 J Average k 2s.d.7yplcat LLDs are found ln table 8-12.<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<UD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<<LLD<LLD Iodine-1$1<0.4<0.4<0.2<0.1<0.3<0.1<0.2<0.5,<0.2<0.3<0.1<0.4<0.5<0.2<0.2<0.3<0.4<0.2<0.4<0.3<0.4<0.2<0.4<0.2<0.2<0.3 230 i 90 190 4 6Q<100 240 k 80 220 k 5$

TABID B-7 tcont.)INDIANA MICHIGAN POWER COMPANY-DONALD C.COOK NUCLEAR PLANT CONCENTRATlONS OF GROSS BETA.1ODINE.'IMIIUM AND GAMMA EMITIERS'N DRlNKlNG WA'IER Results ln Untts of pCt/lt ter 2 2 stgma COLUKTION BATE Gamma 8 ItxQne-131 Ol/11/90 Ol(25/90 02/08/90 02/22(90 03/08/90 03/22/90 04/05/90 04/19/90 05/03/90 05/17/90 05/31/90 06/l4/90 06/28/90 07/12/90 07/26/90 08/09/90 08/23/90 09/06/90 09/20/90 10/04/90 10/18/90 11/Ol/90 ll/16/90 ll/29/90 12/13/90 12/27(90 Average k 2a.d.4.4i 1.2 4.1%1.0 2.8k 1.0 4.6k 1.6 6.1+1.2 4.7%1.1 4.3R 1.0 3.6R 1.0 3.2%1.0 3.2+1.0 3.7 t 1.0 3.2 R 1.0 2.8 i 1.0 3.2 a 0.9 3.8 a 1.0 3.1 a 1.1 3.9 a 1.0 3.1 k 0.9 4.1 4 1.0 4.6i 1.0 3.6 i 1.0 4.1 4 1.1 4.3 a 1.0 4.2 R 1.0 4.6-a 1.1 5.1 x 1.1$.9+lJS<LLD<LLD<LLD<LLD<LLD<LLD<LLD<<LLD<LLD<LLD<LLD<<LLD<<LLD<<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<<LLD<LLD<LLD<0.3<0.3<0.3<O.l<0.3<<O.l<0.2<0.4<0.2 (0.3<0.3<0.4<0.3<0.3<0.2<0.3<0.3<0.1<0.4<<0.3<0.3 (0.2<<0.5<0.3<0.3<0.4<200 340~80<100 T INDIANA MICHIGAN POWER CO-DONALD C.COOK NUCLEAR PLANT CONCENTRATIONS OF GAMMA EMITTERS'N SEDIMENT Results ln Units of pCI/kg (wet]k 2 sigma Statton Colleetton Date Be-7 KAO Cs-187 Ra-22B T?I-228 L-2 L-3 L-5 L-3 L-4 L.5 05/15/90 05/15/90 05/15/90 05/15/90 11/15/90 11/15/90 ll/15/90 11/15/90<300<300<100<200<<100<100<100<200 6260 k 630 7250 a 730 6000~600-7060 k 710 4930 k 490 5440 k 540 5240 2 520 5700 k 570<20 (20 26.7 R 9.9 30.1 2 11.8<20 (20 18.5 k 10.4<20<300<300 (200<300<200 (200 (200 (300 101 X 27 171 2 26 154 R 20 147'5 144 k 14 70.9 k 9.9 116 k 19 108 2 13 Average i 2 a.d.8988%1670 28.1 t 11.9 126%BB lppical I.I.Ds are found ln table 0-12.

TABLE B-9 INIHANA MCHIGAN POWER COMPhNY-DONhLD C.COOK NUCLEAR PLANT CONCENTRAGONS OF IODINE AND GAMMA EMITIERS'N M)LK Results ln Units of pCl/liter k 2 sigma COLLISION ANALYSIS SHULER DATES STATION CODES IlMEhCK WARlHBIEN ZELMER MUNG HS Ol/12/90 K-40 1-131 1310 k 130 1240 k 120<0.3<0.2 1270 k 130<0.2 1150 k 120 1260 k 130 1140 t 110 1200 k 120 (0.2<0.2<0.2<0.2 01/26/90 K-40 1-131 1600 k 160'1290 k 130<0.1<O.l 1060 k 110<0.2 1360 2 140 1350 k 130 1300 k 130 1370 2 140<O.l (0.2<0.2<O.l 02/09/90 K-40 I-131 1260 k 130 1200 k 120 1320 k 130 1180 k 120 1690 t 170 1260 2 130 126Q a 130<0.2<0.2<<O.l<0.2<0,3<O.l (0.1 02/23/90 K-40 1-131 1260 2 130 1290 k 130 (a)1350 k 130<0.2<0.2<0.2 1320 R 130<0.2 1050 k 110 (0.2 131Q k 130<0.1 1340 4 130<O.l 03/09/90 K-40 1-131 1360 k 140 1370 k 140lb)1340 k 130 1350 k 140 1240 k 12Q 1380 4 140 1180 k 120<0.2<0.1<O.e<0.2<0.2<0.1<0.2 03/23/90 K-40 I-131 1250 k 120 1200 k 120<0.2<0.1 1300 a 130<0.2 137Q k 140<O.l 1390 k 140 (0.2 1280 k 130 1420+140<0.2<0.2 Typical LLDs are found ln table B-12.All other gamma emltters were<<L (a)MUk esaler made early pick-up.No mUk lelt ln tank: make up s lb)No available at co))ection; make-up sample collected 03/11/90.llected 2/25/90.

B-9 (cont.)INDIANA MICHIGAN POWER CO-DONALD C.COOK NUCLEAR PLANT CONCENTRATIONS OF IODINE AND GAMMA EMITIERS'N MILK Results in Units of pCl/liter t 2 sigma COLLEC MON ANALYSIS DATES SHULER STATION CODES LOZMACK PFARMBIEN ZELMER LIVING HS 04/06/90 K-40 1-131 1690 t 170<<0.1 1250 k 120 1280 k 130<0.1<0.2 1240 k 120 1300+130 1260 k 130 1400 2 140 (0.2<0.2<0.1<0.2 04/20/90 K-40 1-131 1400 k 140<0.3 1090 k 110<0.3 1160 4 120<0.3 1360 2 140<0.2 1150 2 110<0.2 1240 2 120<0.3 1290 k 130<0.2 05/04/90 05/18/90 06/01/90 K-40 I-131 K-40 I-131 K-40 1-131 1350 t 140 1320*130 1240 k 120 1380 k 140 1440 k 140 1270 2 130 1250 2 130<0.1<0.1 (0.2<0.2<0.2<0.2<0.3 989 2 99 1420 k 140 1240 k 12Q 126Q k 130 1400 k 140 1190 2 120 1180 k 120 (0.2<0.2<0.3<0.3 (0.2<0.2 (0.1 922 k 92 1080 k 110 1360 k 140 1260 2 130 1310 k 130 1260 2 130 1280 k 130<0.3<0.3<0.2 (0.2<0.2 (0.3 (0.3 06/15/90 06/29/90 K-40 1-131 K-40 1-131 1420 a 140<0.3 1280 i 130<0.2 1360 2 140 1310 k 130 1290 t 130 1160 k 12Q 1290 k 130 1250 k 120 (0.2 (0.2 (0.2<0.2 (0.2<0.2 1320 k 130 1300 t 130 1230 k 120 1450 k 140 1190 k 12Q 1240 2 120<0.2 (0.2<0.3 (0.2<0.2 (0.2'Ippleal LLDs are found in table 8-l2.All other gamnta einltters were<LLD.

TABLE B-9 ICont.)INDIANA MICHIGAN POWER COMPANY-DONALD C.COOK NUCLEAR PLANT CONCENTRATIONS OF IODINE AND GAMMA EMITTERS'N MILK Results In Units of pCI/liter i 2 sigma COLLF~ON ANALYSIS 8HULER DATES STATION CODES LO2MACK WARMBIEN ZELMER LIVING HS 07/13/90 07/27/90 K-40 1-131 K-40 1-131 1400 f 140 1520 2 150 1270 k 130 1370 k 140 1300 k 130 1280 k 130 1260 2 130<0.2<0.2<0.1<O.l<0.2<0.2<0.3 1230 i 120 1340 2 130 1410 k 140 1300 k 130 1440 4 140 1490 k 150 1170 k 120<O.l<0.2<0.1<0.2<0.2<0.1<0.2 08/10/90 K-40 1-131 1130 k 130<0.3 1380 k 140 1420 4 140 1320*130 1320 k 130 1300 t 130 1260 2 130<0.3<0.2<0.2<0.3<0.2<0.2 08/24/90 K-40 1-131 1390 a 140<0.4 1360 k 140<0.2 1400 k 14Q<0.2 1030 4 100 1110 k 110 1340 k 130 1360 2 140<0.2<0.2<0.2<0.2 09/07/90 K-40 1-131 1390 R 140 1350 2 140 1270 R 130 1310 R 130 1260 R 130 1350 R 14Q 1070 X 110<0.2<0.2<0.2<0.2<0.2<0.2<0.2 09/21/90 K-4Q I-131 1950 4 190 1440 k 140 1360 k 140 1180 2 120 1370 2 140 1450 k 150 1240 k 120<0.2<0.2<0.3<0.3<0.2<0.3<0.3 Qpir Ds are lound ln table B-l2.All other gamma emltters were<I B-9 ICont.)INDIANA MICHIGAN POWER CO-DONALD C.COOK NUCLEAR PLANT CONCENTRATIONS OF IODINE AND GAMMA EMITIERS'N MILK Results In Units of pCI(liter k 2 sigma COLLF~ON ANALYSIS SHULER DATES STATION CODES LOZMACK NARMBIEN ZELMER LXVING HS 10/05/90 K-40 I-131 1200 k 120<0.2 1400 k 140 1390 k 140 1480 2 150 1190 k 120 1390 2 140 1310 2 130<0.2<0.2<0.2<0.2<0.2<0.2 10/19/90 K-40 1-131 1060 k 110<0.2 1390 k 140 1310 2 130<0.2=<0.2 1430 k 140<0.2 1580 4 160 1340 k 130 1290 k 130'0.1<0.2<0.2 Q 11/02/90 C)K-40 I-131 1570 k 160<0.2 1020 k 100<0.3 1360 a 140<0.2 999 X 100 1020 R 100 1190 R 120 1300 R 130<0.1<0.1<0.2<0.1 11/16/90 K-40 1-131 1180 R 120<0.5 1230 2 120<0.5 1310 k 130<0.3 1360 2 140<<0.3 1440 k 140 1300 2 130 1290 k 130<0.3<0.3<0.4 11/30/90 K-40 1-131 1150 i 110<0.2 1450 a 150<0.1 922 t 92<0.1 1340 k 130<0.2 1210 k 120 1280 k 130 1170 t 120<0.1<0.1'0.2 12/28/90 K-40 1-131 1180 a 120 1460 2 150 1350 k 140 1350 k 130 1230*120 1260 k 130 1220 f 120<0.5<0.2<0.2<0.2<0.2<0.2<0.2'lpptcal LLDs are found ln table 8-12.All other gamma emitters were<LLD.

ThBLR B-10 INDIANh MICHIQhN POWER COMPhNT-DONhLD C.COOK NUCLEAR 1%ANT CONCERG&11ONS OF GAMMA EMITIERS'N FISH Results ln Units of pCt/kg (wet)k 2 stgma 8ta5aa Desert tion Cs-1S7 Ra-228 Th-228 05/16/90 05/16/90 05/16(90 05(16/90 10/16/90 10/16/90 10/23/90 10/23/90 OF$8outh ONS-North OFS-North ONS-South OFS-South ONS-North ONS-South ONS-North<100<80<300 3840 a 380 3150 4 310 1700 2 170 884 2 89 3310 k 330 3320 R 330 2490 2 250 2590 2 260 25.5k 8.6 35.7 k 10.3 80.1 k 1.1 20.3 k 6.6<20<30 30.3 t 5.2 35.0%5.3<200<300<200<200<400<500<100<100<20<20<20<20<40<50=<10<10 2838 k 2049 S7.8%4S LLDs are found ln table B-12.

TAB INDIANA MICHIGhN POWER COMP NhLD C.COOK NUCLEAR PLhNT CONCENIRA'IIONS OF GAMMA EMIITEBS'N FOOD/VEGETATION Results in Untts of pCI/kg (weg k 2 stgma COLIZCTION DATE Statton Desert ttan 1-191 08/12/90 08/18/90 08/18/90 Q8/18/90 08/18/90 SECIOR-h SECIOR-H SECYOR-E SECIOR-H SECIOR-E Broad Leaves Leaves Leaves Grapes Grapes 1060 k 240 2700 2 300 1190 k 250<100<100 889 t 212 3700 k 370 3360 k 390 1760 2 180 2300 k 230<30<6Q<60<60<50 Averse i 2 s.&, 1650 k 1823~7ypteaI LLDs are found tn table B-12.

TABLE B-12 BG)IANA MCHIGAN POWER COMPANY-DONALD C.COOK NUCLEAR PLANT GARS%SPECTROMETRY LOWER LIMITS OF DETECIION AND REPORIING LEVELS Tech 8 LLD t Level Tech 8 LLD R Cerium-144 Barium/La-140 Cesium-134 Ru,Rh-106 Cesium-137 Zr.Nb-95 Manganese-54 Iron-59 Zinc-65 Cobalt-60 Cobalt-58 Iodine-131 60 10 10 80 10 10 10 15 20 10 10 20 N/A N/A 60 N/A 60 N/A N/A N/A N/A NIA NIA 60 N/A N/A 1000 N/A 2000 N/A N/A NIA N/A N/A N/A 100 30 50/10 7 50 6 10/15 6 15 10 5 6 10 N/A 60/15 15 N/A 18 30/15 15 30 30 30 15 1 N/A 200 30 N/A SQ 400 1000 400 300 300 1000 2 Cerium-144 Barium/La-140 Cesium-134 Ru.Rh-106 Cesium-137 Zr,Nb-95 Manganese-54 Iron-59 Zinc-65 Cobalt-60 Coat-58 Iodine-131 30 50/10 7 50 6 20 6 16 10 6 5 10 N/A 60/15 15 N/A 18 N/A N/A N/A NIA NIA N/A 1 N/A 300 60 N/A 70 N/A N/A N/A N/A N/A N/A 3 0.007 0.005 0.002 0.01Q O.Q02 0,002 0.002 0.002 0.002 0.002 0.002 0.040 N/A N/A 0.06 N/A 0.06 N/A N/A N/A N/A N/A N/A 0.07 N/A N/A 10 N/A 20 N/A N/A NIA N/A N/A'/A 0.9 Charcoal Trap TABLE nt.)INDIANA MICHIGAN POWER COMP NhLD C.COOK NUCLEAR PLANT GAMMA SPECIROMETRY LOWER LlMITS OF DEIECHON AND REPOKONG LEVELS Tech 8 LLD t Level Tech 8 LLD R t Level Cerium-144 Barium/La-140 Cesium-134 Ru.Rh-106 Cesium-137 Zr,Nb-95 Manganese-54 Iron-59 Zinc-65 Cobalt-60 Cobalt-58 lodlne-131 40 60 6 50 6 30 5 15 10 5 5 10 N/A N/A 230 N/A 150 N/A 130 260 260 130 130 N/A N/A N/A 1000 N/A 2000 N/A 30000 10000 20000 10000 30000 N/A 150 5 3Q 200 30 40 9 50 60 20 20 30 N/A N/A 150 N/A 180 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Gross Beta Trttlum ILDa and Re Alr Parttculates Surface Water Ground Water Drinking Water 0.01 4 4 4 0.01 pCl/m3 4.Q pCl/1 4.0 pCl/1 4.0 pCl/l N/A N/A N/A N/A Surface Water Ground Water Drlnklng Water 2000 2000 2000 2000 2000 2000 20,000 20.000 20.QOO APPENDIX C ANALYTICAL PROCEDURES SYNOPSIS 65

DETERMINATION OF GROSS BETA ACTIVFIT'N WATER SAMPLES I.0~IN I'N D TI N The procedures described in this section are used to measure the overall radioactivity of water samples without identifying the radioactive species present.No chemical separation techniques are involved.One liter of the sample is evaporated on a hot plate.A smaller volume may be used if the sample has a significant salt content as measured by a conductivity meter.If requested by the customer, the sample is filtered through No.54 filter paper before evaporation, removing particles greater than 30 microns in size.After evaporating to a small volume in a beaker, the sample is rinsed into a 2-inch dihmeter stainless steel planchet which is stamped with a concentric ring pattern to distribute residue evenly.Final evaporation to dryness takes place under heat lamps.Residue mass is determined by weighing the planchet before and after mounting, the sample.The planchet is counted for beta activity on an automatic proportional counter.Results are calculated using empirical self-absorption curves which allow for the change in effective counting efficiency caused by the residue mass.67 2.0 DETE N APAHrLm Detection capability depends upon the sample volume actually represented on the planchet, the background and the efficiency of the counting instrument, and upon self-absorption'of beta particles by the mounted sample.Because the radioactive species are not identifled, no decay corrections are made and the reported activity refers to the counting time.The minimum detectable level (MDL)for water samples is nominally 1.6 picocuries per liter for gross beta at the 4.66 sigma level (1.0 pCi/1 at the 2.83 sigma level), assuming that 1 liter of sample is used and that-2 gram of sample residue is mounted on the planchet.These Qgures are based upon a counting'time of 50 minutes and upon representative values of counting eEiciqncy and background of 0.2 and 1.2 cpm, respectively.

The MDL becomes significantly lower as the mount weight decreases because of reduced self-absorption.

At a zero mount weight, the 4.66 sigma MDL for gross beta is 0.9 picocuries per liter.These values reflect a beta counting efBciency of 0.38.68 GROSS BETA ANALYSIS OF SAMPLES N~P After a delay of Ave or more days, allowing for the radon-222 and radon-220 (thoron)daughter products to decay, the filters are counted in a gas-flow proportional counter.An unused air particulate filter, supplied by D.C.Cook, is counted as the blank.Calculations of the results, the two sigma error and the lower limit of detection (LLD): RESULT (pCi/m3)((S/T)-(B/t))/(2.22 V E)TWO SIGMA ERROR (pCi/m33=2((S/T23+(B/t2))I/2/(2 22 V E)4.66 (B~)/(2.22 V E t)where: S B E T t V Gross counts of sample including blank Counts of blank Counting efficiency Number of minutes sample was counted Number of minutes blank was counted Sample aliquot size (cubic meters)

ANALYSIS OF SAMPLES FOR TEDIUM W~t'r Approximately 2 ml of water are converted to hydrogen by passing the water, heated to its vapor state.over a granular zinc conversion column heated to 400'.The hydrogen is loaded into a one liter proportional detector and the volume is determined by recording the pressure.The proportional detector is passively shielded by lead and steel and an electronic, anticoincidence system provides additional shielding from cosmic rays.Calculation of the results, the two sigma error and the lower limit detection (LLD)in pCi/1: RESULT 3.234 TN VN(CG-B)/(CN VS)TWO SIGMA ERROR=2(3.234)TN VN(E)1/2/(CN VS)3.3 (3.234)TN UN(E)I/2/(CN VS)where: TN 3.234 CN OG B alt tritium units of the standard conversion factor changing tritium units to pCi/1 volume of the standard used to calibrate the eNciency of the detector in psia volume of the sample loaded into the detector in psia the net cpm of the standard of volume VN the gross cpm of the sample of volume VS the background of the detector in cpm counting time for the sample S/T2+B/t2 70 ANALYSIS OF SAMPLES FOR STRONTHM-SS AND-90 W~gr Stable strontium carrier is added to 1 liter of sample and the volume is reduced by evaporation.

Strontium is precipitated as Sr(NO3)2 using nitric acid.A barium scavenge and an iron (ferric hydroxide) scavenge are performed followed by addition of stable yttrium carrier and a minimum of 5 day period for yttrium ingrowth.Yttrium is then precipitated as hydroxide, dissolved and re-precipitated as oxalate.The yttrium oxalate is mounted on a nylon planchet and is counted in a low level beta counter to infer Sr-90 activity.Strontium-89 activity is determined by precipitating SrCO3 from the sample after yttrium separation.

This precipitate is mounted on a nylon planchet and is covered with an 80 mg/cm2 aluminum absorber for low level beta counting.Milk Stable strontium carrier is added to I liter of sample and the sample is firs evaporated, then ashed in a muffle furnace.The ash is dissolved and strontium is precipitated as phosphate, then is dissolved and precipitated as SrN03 using fuming (90%)nitric acid.A barium chromate scavenge and an iron (ferric hydroxide) scavenge are then performed.

Stable yttrium carrier is added and the sample is allowed to stand for a minimum of 5 days for yttrium ingrowth.Yttrium is then precipitated as hydroxide, dissolved and re-precipitated as oxalate.The yttrium oxalate is mounted on a nylon planchet and is counted in a low level beta counter to infer Sr-90 activity.Strontium-89 is determined by precipitating SrC03 from the sample after yttrium separation.

This precipitate is mounted on a nylon planchet and is covered with an 80 mg/cm2 aluminum absorber for low level beta counting.71 The sample is Qrst dried under heat lamps and an aliquot is taken.Stable strontium carrier is added and the sample is leached in hydrachloric acid.The mixture is Qltered and strontium is precipitated from the liquid portion as phosphate.

Strontium is, precipitated as Sr(N03)2 using fuming (905 nitric acid.A barium chromate scavenge and an iron (ferric hydroxide) scavenge are then performed.

Stable yttrium carrier is added and the sample is allowed to stand for a minimum of 5 days for yttrium ingrowth.Yttrium is then precipitated as hydroxide, dissolved and re-precipitated as oxalate.'Ihe yttrium oxalate is mounted on a nylon planchet and is counted in a low level beta counter to infer Sr-90 activity.Strontium-89 activity is determined by precipitating SrC03 from the sample after yttrium separation.

This precipitate is mounted on a nylon planchet and is covered with an 80 mg/cm2 aluminum absorber for low level beta counting.I t A wet portion of the sample is dried and then ashed in a mufQe mace.Stable strontium carrier is added and the ash is leached in hydrochloric acid.The sample is Qltered and strontium is precipitated from the liquid portion as phosphate.

Strontium is precipitated as Sr(N03)using fuming (9C86)nitric acid.An iron (ferric hydroxide) scavenge is performed, followed by addition of stable yttrium carrier and a minimum of 5 days period for yttrium ingrowth.Yttrium is then precipitated as hydroxide, dissolved and re-precipitated as oxalate.The yttrium oxalate is mounted on a nylon planchet and is counted in a low level beta counter to infer strontium-90 activity.Strontium-89 activity is determined by precipitating SrC03 from the sample after yttrium separation.

This precipitate is mounted on a nylon planchet and is covered with an 80 mg/cm2 aluminum absorber for low level beta counting.Stable strontium carrier is added to the sample and it is leached in c acid to bring deposits into solution.The mixture is then Qltered and the Qltrate is reduced in volume by evaporation.

Strontium is precipitate as Sr(N03)2 using fuming (9C86)nitric acid.A barium scavenge is used to remove some interfering species.An iron (ferric hydroxide) scavenge is performed, followed by addition of stable yttrium carrier and a 7 to 10 day period for yttrium ingrowth.Yttrium is then precipitated as hydroxide, dissolved and re-precipitated as oxalate.The yttrium oxalate is mounted on a nylon planchet and is counted in a low level beta counter to infer stron-tium-90 activity.Strontium-89 activity is determined by precipitating SrC03 from the sample after yttrium separation.

This precipitate is mounted on a nylon planchet and is covered with 80 mg/cm2 aluminum absorber for low level beta counting.Calculations of the results, two sigma errors and lower limits of detection (LLD)are expressed in activity of pCi/volume or pCi/mass: RESULT Sr-89 TWO SIGMA ERROR Sr-89 LLD Sr-89 RESULT Sr-90 TWO SIGMA ERROR Sr-90 LLD Sr-90 (N/Dt,"BC-BA)/(2.22 V YS DFSR8g ESR 8g)2((N/Dt+BC+BA)/LR)1/2/(2.22 V YS DFSR 8g E 9 4,66((BC+BA)/ht) 1/2/(2.22 V YS DFSR 8g ESR (N/bt-B)/(2.22 V Y1 Y2 DF IF E)2((N/b,t+B)/ht) 1/2/(2 22 V Y1 Y2 DF E IF))4.66(B/ht) 1/2/(2 22 V Y1 Y2 IF DF E)73' where: N ht 2.22 BA YS DF SR-89 ESR-89>>Y-90)Ey-90 IFY-90 IGY-90 0.016 Ey/abs Y1 Y2 IF total counts from sample (counts)counting time for sample (min)background rate of counter (cpm)using absorber conhgurati dpm/pCi volume or weight of sample analyzed background addition from Sr-90 and ingrowth of Y-90 0.016 (K)+(K)Ey/abs)(IGy gP)chemical yield of strontium decay factor from the mid collection date to the counting date for SR-89 efQciency of the counter for SR-89 with the 80 mg/cm.sq.alunMum absorber (Nb,t-BC)y gp/(Ey gp IFy gp DFy gpY1)the decay factor for Y-90 from the"milk" time to the mid count time efQciency of the counter for Y-90 ingrowth factor for Y-90 from scavenge time to mQking tim(the ingrowth factor for Y-90 into the strontium mount from"mQk" time to the mid count time the emciency of measuring SR-90 through a No.6 absorber the efBciency of counting Y-90 through a No.6 absorber background rate of counter (cpm)chemical yield of yttrium chemical yield of strontium decay factor of yttrium from the radiochemical milking time the mid count time efBciency of the counter for Y-90 ingrowth factor for Y-90 from scavenge time to the radio-chemical milking time ANALYSIS OF SAMPLES FOR IODINE-131 Milk W Two liters of sample are flrst equQibrated with stable iodide carrier.A batch treatment with anion exchange resin is used to remove iodine from the sample.The iodine is then stripped from the resin with sodium hypochlorite solution, is reduced with hydroxylamine hydrochloride and is extracted into carbon tetrachloride as free iodine.It is then back-extracted as iodide into sodium bisulflte solution and is precipitated as palladium iodide.The sodium bisulflte solution and is precipitated as palladium iodide.The precipitate is weighed for chemical yield and is mounted on a nylon planchet for low level beta counting.The chemical yield is corrected by measuring the stable iodide content of the milk or the water with a specifi ion electrode.

Calculations of results, two sigma error and the lower limit of detection (LLD)in pCi/I: RESULT'DVO SIGMA ERROR where: 2.22 V (N/6t-B)/(2.22 E V Y DF)2((N/bt+B)/h,t)

/(2.22 E V Y DF)=4.66(B/ht) 1/2/(2.22 E V Y DF)total counts from sample (counts)counting time for sample (min)background rate of counter (cpm)dpm/pCi volume or weight of sample analyzed chemical yield of the mount or sample counted decay factor from the collection to the counting date efficiency of the counter for I-131, corrected for self absorption effects by the formula E=Es(exp-0.0061M)/(exp-0.0061Ms)

Es=efficiency of the counter determined from an I-131 standard mount Ms=mass of Pd12 on the standard mount, mg mass of PDI2 on the sample mount, mg 7S GARB'PECTROMETRY OF 8Ab9%ZA M~llk W A 1.0 liter Marinelli beaker is filled with a representative aliquot of the sample.The sample is then counted for approximately 1000 minutes with a shielded Ge(Li)detector coupled to a mini-computer-based data acquisition system which performs pulse height analysis.rTh n il im n A large quantity of the sample is dried at a low temperature, less than 100'C.As much as possible (up to the total sample)is loaded into a tared 1-liter Marinelli and weighed.The sample is then counted for approximately 1000 minutes with a shielded Ge(Li)detector coupled to a mini-computer-based data acquisition system which performs pulse height analysis.Fish As much as possible (up to the total sample)of the edible portion of the sample is loaded into a tared Marinelli and weighed.The sample is then counted for approximately 1000 minutes with a shielded Ge(Li)detector coupled to a mini-computer-based data acquisition system which performs ulse height analysis, m n Soils and sediments are dried at a low temperature, less than 100'C.The soil or sediment fs loaded fully into a tared, standard 300 cc container and weighed.The sample is then counted for approximately six hours with a shielded Ge(Li)detector coupled to a mini-computer-based data acquisition system which performs pulse height and analysis.Charcoal cartridges are counted up to five at a time, with one positioned on the face of a Ge(Li)detector and up to four on the side of'the Ge(Li)detector, Each Ge(Li)detector is calibrated for both positions.

The detection limit for I-131 of each charcoal cartridge can be determined (assuming no positive I-131)uniquely from the volume of air which passed through it, In the event I-131 is observed in the initial counting of a set, each charcoal cartridge is then counted separately, positioned on the face of the detector.76 A~I The thirteen airborne particulate filters for a quarterly composite for each Geld station are aligned one in front of another and then counted for at least six hours with a shielded Ge(Li)detector coupled to a mini-computer-based data acquisition system which performs pulse height analysis.A mini-computer software program defines peaks by certain changes in the slope of the spectrum.The program also compares the energy of each peak with a library of peaks for isotope identification and then performs the radioactivity calculation using the appropriate fractional gamma ray abundance, half life, detector efficiency, and net counts in the peak region.The calculation of results, two sigma error and the lower limit of detection (LLD)in pCi/volume of pCi/mass: RESULT'IWO SIGMA ERROR t (S-B)/2.22 t E,V F DF)2(S+B)//(2.22 t E V F DF)4.66(B)1/2/(2.22 t E V F DF)where: S 2.22 Area, in counts, of sample peak and background (region of spectrum of interest)Background area, in counts, under sample peak, determined by a linear interpolation of the representative backgrounds on either side of the peak length of time in minutes the sample was counted dpm/pCi detector efficiency for energy of interest and geometry of sample sample aliquot sfze (liters, cubic meters, kilograms, or grams)fractional gamma abundance (specific for each emitted gamma)decay factor from the mid-coQection date to the counting date ENVIRONMENTAL DOSMETRYTeledyne Isotopes uses a CaS04.Dy thermoluminescent dosimeter (TLD)which the company manufactures.

This material has a high light output, negligible thermally induced signal loss (fading), and negligible self dosing.The energy response curve{as well as all other features)satisQes NRC Reg.Guide 4.13.Transit doses are accounted for by use of separate TLDs.Following the field exposure period the TLDs are placed in a Teledyne Isotopes Model 8300.One fourth of the rectangular TLD is heated at a time and the measured light emission Ouminescence) is recorded.The TLD is then annealed and exposed to a known Cs-137 dose: each area is then read again.This provides a calibration of each area of each TLD after every field use.The transit controls are read in the same manner.Calculations of results and the two sigma error in net milliRoentgen (mR): RESULT D=(D~+D2+D3+D$

/4 TWO SIGMA ERROR=2((Dl D)2+(D2 D)2+(D3-D)2+(D4 D)2)/3)1/2 I RE: D1=the net mRof area 1 of the TLD, and simQarly for D2, D3, and D4 Dl I1 K/R1-A the instrument reading of the field dose in area 1 K R1 the known exposure by the Cs-137 source the instrument reading due to the Cs-137 dose on area 1 average dose in mR, calculated in similar manner as above, of the transit control TLDs D the average net mR of aQ 4 areas of the TLD.

APPENDIX D SU5HIGLRY OF EPA INTERLABORATORY COMPARISONS 79 EPA INTERLABORATORY COMPARXSON PROGRAM Teledyne Isotopes participates in the US EPA Interlaboratory Comparison Program to the fullest extent possible.That is,, we participate in the program for all radioactive isotopes prepared and at the maximum frequency of avaQabQity.

In this section trending graphs (since 1981)and the 1990 data summary tables are presented for isotopes in the various sample media applicable to the Donald C.Cook Power Stations Radiological Environmental Monitoring Program.The footnotes of the table discuss investigations of problems encountered in a few cases.80 US EPA INTERLABORATORY COMPARXSON PROGRAM 1990 (ENVIRQMhKENTAI

)0 Collection Date Media Nuclide EPA Result(a)Teledyne Isoto es Result(b)10/31/89 Lab Perf.Water Sample A Sample B Gr-Alpha Ra-226 Ra-228 Gr-Beta Sr-89 Sr-90 Cs-134 Cs-137 49.00 2 8.40 2 4.10 2 32.00 2 15.00 k 7.00 k 5.00 2 5.00 2 12.00 1.30 0.60 5.00 5.00 1.50 5.00 5.00 42.33 4 9.20 k 4.00 2 30.33 k 15.00 2 7.00 2 5.33 k 7.00 k 5.?7 0.46 0.50 0.58 3.46 0.00 1.15 0.00 11/10/89 Water 01/12/90 Water 01/26/90 Water 02/09/90 Water Ra-226 Ra-228 Sr-89 Sr-90 Gr-Alpha Gr-Beta Co-60 Zn-65 Ru-106 Cs-134 Cs-137 Ba-133 8.70 2 8.57 2 25.00 2 20.00 2 12.0 2 12.0 2'5.00 2 139.00 2 139.00 2 18.00 2 18.00 2 74.00 k 1.30 1.40 5.00 1.50 5.0 5.0 5.00 14.00 14.00 5.00 5.00 7.00 8.47 2 8.57 2 24.00 2 19.67 2 10.00 2 12.33 k 15.00 k 131.33 k 113.67 k 15.33 2 19.33 k 66.00 2 0.49 1.46 1.73 2.52 1.73 1.53 3.464.04 (c)2.31 3.21 3.46 02/23/90 Water 03/09/90 Water H-3 Ra-226 Ra-228 4.9 2 12.7 k 0.7 1.9 4976.00 2 498.00 4.73 2 13.00 2 0.47 1.00 4900.00 k 100.00 03/30/90 Air Filter 04/17/90 Water (Lab Perf}Sample A Sample B Gr-Alpha Gr-Beta Sr-90 Cs-137 Gr-Alpha Ra-226 Ra-228 Gr-Beta Sr-89 Sr-90 Cs-134 Cs-137 5.0 2 31.0 2 10.0 k 10.0 k 90.0 k 5.0 4 10.2 k 52.0 2 10.0 2 10.0 k 15.0 k 15.0 k 5.0 5.0 1.5 5.0 23.0 0.8 1.5 5.0 5.0 1.5 5.0 5.0 6.33 2 31.67 2 9.33 k 10.67 2 79.33 2 5.67 k 9.37 2 53.33 2 10.67 2 9.67 k 12.67 2 16.33 2 0.58 0.58 0.58 1.15 2.89 0.15 1.44 1.53 1.15 0.58 1.53 1.15 Footnotes at end of table.81 US EPA INTERIdiBORATORY COHPAMSON PROGRAM 1990 (Cont.)(ENVIRON NTm)Collection Date Media Nuclide EPA Result(a)Teledyne Isoto es Result(b)04/27/90 MilR 05/04/90 Water Sr-89 Sr-90 1-131 Cs-137 K Sr-89 Sr-90 23.0 2 23.0 2 99.0 k 24.0 2 1550.0 k 7.0 2 7.0 k 5.0 5.0 10.0 5.0 78.0 5.0 5.0 24.67 2 24.00 k 89.67 2 27+33 k 1483.33 2 6.67 k 6.67 2 1.53 0.00 3.21 2.52 75.06 0.58 0.58 05/11/90 Water 06/08/90 Water Gr-Alpha Gr-Beta Co-60 Zn-65 Ru-106 Cs-134 Cs-137 Ba-133 22.0 2 15.0 k 24.0 2 148.0 2 210.0 k 24.0 k 25.0 2 99.0 R 6.0 5.0 5.0 15.0 21.0 5.0 5.0 10.0 16.00 2 17.00 2 25.33 k 148.67 2 196.00 2 23.67 2 24.67 k 93.00 2 1.00 1.00 2.52 3.06 20.66 2.89 2.08 6.08/22/90 Water 07/13/90 Water H-3 Ra-226 Ra-228 12.1 2 5.1 2 1.8 1.3 2933.0 k 358.0 11.37 2 4.20 2 0.60 0.75 2900 k 100.00 08/10/90 Water I-131 39.0 k 6.0 36.00 k 3.00 08/31/90 Air Filter 09/14/90 Water Gr-Alpha Gr-Beta Sr-90 Cs-137 Sr-89 Sr-90 10.0 N 62.0 2 20.0 k 20.0 2 10.0 2 9.0 2 5.0 5.0 5.0 5.0 5.0 5.0 16.00 2 63.33 2 18.00 2 18.33 2 8.67 4 9.0 4 1.00 (d)1.53 1.00 3.21 0.58 1.00 09/21/90 Water Gr-Alpha Gr-Beta 10.0 k 10.0 k 5.0 5.0 11.00 k 1.00 11.00 k 1.00 Footnotes at end of table.

US EPA VFTRRLABORATORY COHPARXSON PROGRAM 1990 (Cont.)(ENVIRONMENTAL)

Collection Date Media Nuclide EPA Result(a)Teledyne Isoto es Result(b)09/28/90 Mil~10/15/90 Water Sr-89 Sr-90 I-131 Cs-137 K Co-60 Zn-65 Ru-106 Cs-134 Cs-137 Ba-133 16.0 k 20.0 2 58.0 k 20.0 k 1700.0 k 20.0 2 115.0 2 151.0 2 12.0 2 12.0 2 110.0 2 5.0 5.0 6.0 5.0 85.0 5.0 12.0 15.0 5.0 5.0 11.0 9.0 k 15.33 k 54.67 k 23.00 k 171Q.OQ k 21.00 k 115.00 k 142.00 2 11.00 k 16.33 k 94.67 2 2.65 (e)0.58 1.53 1.73 65.51 1.00 11.53 8.66 0.00 2.52 5.13 (f)10/30/90 Lab Perf;Gr-Alpha Water Ha-226 Sample A Ha-228 62.00 2 13.6 2 5.0 2 16.00 2.0 1.3 5?.00 2 12.67 2 4.87 2 1.00 1.27 0.23 Sample B Gr-Beta Sr-89 Sr-90 Cs-134 Cs-137 53.0 2 20.0 2 15.0 k.7.0%5.0 2 5.0 5.0 5.0 5.0 5.0 51.00 2 19.00 2 14.33 2 9.00 2 7.6?k 2.31 3.61 0.581.15 10/19/90 Water 11/09/90 Water H-3 Ra-226 Ha-228 7203.0 2 720.0 7.4 2 1.1 7.7 2 1.9 7133.33 2 251.66?.27 2 0.38 7.57 2 0.32 Footnotes at end of table.83 US EPA INTERLABORhTORY COMPhRISON PROGRAlK 1890 (Cont.)(ENVIRONMENTAL)

EPA Results-Expected laboratory precision (1 sigma).Units are pCi/liter for water, and milk except K is in mg/liter.Units are total pCi for air paruculate Qlters.Teledyne Results-Average 2 one sigma, Units are pCi/Bter for water and milk except K is in mg/liter.Units are total pCi for air particulate filters.No apparent cause for the low results were found.Three aBquots of the sample were counted on three.separate detectors.

The results of all three were similar.The calibration curve Qt is good (0.997).Ruthenium-106 will be obtained from the EPA to further investigate the matter and future mixed gamma in water EPA Intercomparisons will be monitored to identify continuing trends.The EPA deposit occupies a smaller area than our calibration planchet and hence has a higher counting efficiency.

No further corrective action is required, since our calibration standard better represents an air particulate Qlter.be taken in the Incomplete removal of calcium, lead to erroneously high strontium yields M e strontium nitrate and strontium sulfate precipitation steps to ensure a o e.Ore care is Qnal volume of at least 20 ml in the strontium sulfate step.Reanalysis of internal QC samples produced good results after implementing the corrective action.There is no apparent reason for the deviation between the EPA and Teledyne Isotopes values.Other isotopes in the sample were measured accurately.

The calculations were reviewed and activities calculated from other Ba-133 gamma rays.Results were reproduced as reported.4/4/91 TRMIDING GRAPH-5 US EPA CROSS CHECK PROGRAM GROSS BETA IN AIR PARTICULATES L 00 Ul fJ CL 1981 1982 1983 1984 08/25/89 EPA Test invalid 1985 1986 1987 1988 1989 1990 Tl 13 sigma e EPA%3sigma 1991

-100 US EPA CRO HECK PROGKf,84 CESIUM-137 IN AIR PARTICULATES Tl+3 sigma 4 EPA k 3 sigma 80 40 0 1981 1982 1983 1984 1985 1986 1987 1988'I 989 1990 1991 US EPA CROSS CHECK PROGMlM IODINE IN MILK 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990'1 991 Tl k 3 sigma EPA k3 sigma US EPA CRQS ECK PRQGRAM POTASS-40 IN III K 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 TI k 3 sigma EPA&stgma US EPA CROSS CHECK PROGRAM STRONTIUM IN MILK 40 1981 1982 1983 1984 1985 1986 1987 1988 1989'I 990 1991 o Tl t 3 sigma o EPA k3 sigma US EPA CEO HECK PROGRAM-STRONTIUM-90 IN MILK 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990'I 991 o Tl k3 sigma~EPA k3 sigma US EPA CROSS CHECK PROGRAM IODINE-131 IN WATER 200 160 120 40 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 a Tl k3 sigma EPA I3 sigma US EPA CROSS CHECK PROGRAM STRONTIUM-89 IN WATER fpg.1)a 60 0 V CL 1981 1982 1983 1984 1985 TI%3sigma o EPA k3 sigma US EPA CROSS CHECK PROGR/LM STRONTIUM-89 IN WATER fyg.2)1984 1985 1986 1987 1988'I 989 1990 1991 n Tla 3S o EPA error US EPA CROSS ECK PROGMDC STRONTIUM-90 IN WATER I 980 1981 1982 1983 1984 1985 1986 1987 1988'l989 1990 1991 n TIX3sigma CPA k3 sigma US EPA CROSS CHECK PROGEUM GROSS BETA IN AIR PARTICULATES 90 cs EPA I 3 sigma Tl k3 sigma 80 70 60 50 40 30 20 10 1981 1982 1983 08/25/89 EPA test Invalid.1984 19851987 1988 1989 1990 US Em CaOSS HEeK rmooaaM GROSS ALPHA IN WATER I 60 O CL 1984 1985 1986 1987 1988 1989 1990 1991 a Tl P 3 sigma o EPA%3sigma US EPA CROSS CHECK PROGRAM TRITIlM IN WATER fyg.1)D CL 1981 1982 1983 1984 1985 o Tl k3 sigma EPA k3 sigma US EPA CROSS CHECK PROGRAM TIUTIUM IN WATER (pg.2)1985 1986 1987 1989 1990 1991 a TI13S o EPA13S APPENDIX E REMP SAMPLING AND ANALYTICAL EXCEPTIONS 99 PROGRNK EXCEPTIONS REMP deviations for 1990 are listed at the end of this appendix.Where possible, the causes of the deviations have been corrected to prevent recurrence.

100 HEMP EXCEPTIONS FOR SCHFZlULED BAMKXNG hND 2LNALYSIS DURING 1990 Station Descri tion Date of Sam lin Reason(s)for Loss/Exce tion A-2 Air Particulate Air Iodine 04/23/90 10/22/90 Samples inadvertently lost at the laboratory.

LLD not met due to,low sample volume.Unit removed for repairs.Coloma Air Particulate 08/20/90 Electrical malfunction; Sampler found not running.Dowagiac Air Particulate/

Air Iodine 12/31/90 Electrical malfunction; LLD not met due to low sample volume.Unit sent for repairs.OFS-6 L-2, L-3 L-4, L-5 TLD Surface Water Second Qtr.Ol/ll/90 TLD, wire cage and enti telephone pole missing at time of TLD exchange.Sample not avaQable due to ice on shoreline.

N/A DrirQdng Water 01/12/89 through 06/15/89 Analytical lab used an LLD of 2 pCi/1 for I-131 analyses.Maximum LLD required by T/S is 1 pCi/l.101 APPENDS F 1990 LAND USE CENSUS 102 APPENDIX F

SUMMARY

OF THE 1990 LAND USE CENSUS The Land Vse Census is performed to ensure that signiQcant changes in the areas in the immediate vicinity of the plant site are identified.

Any identiQed changes are evaluated to determine whether modiQcations must be made to the REMP or other related programs.No such changes were identiQed during the 1990 Land Vse Census.The following is a sunnnary of the 1990 results.The mQk farm survey is performed to update the list of milk farms located in the plant area, to identify the closest milk farm in each land sector, and to identify the nearest mQk animal whose milk is used for xnan consumption.

In 1990 there were no additions and five deletions from the list of area mQk farms.None of the deleted mQk farms were involved in the Cook Plant mQk sampling program.The closest mQk farm in each land sector was unchanged for 1990.A table identi&jing these milk farms is included at the end of this Appendix.The location of the closest mQk animal also remains unchanged for 1990.The residential survey is performed to identify the closest residence to the plant in each land sector.The closest residences in each sector were unchanged for 1990.A table identifying each residence is included at the end of this appendix.In accordance with Technical SpeciQcation (T/8)3.12.2, broadleaf vegetation sampling is performed in lieu of a garden census.Broadleaf sampling is performed to monitor for plant impact on the environment.

103 The samples are obtained, at the site boundaxy in the land sector where it is stimated that the maximum concentration of plant related radionuclides would occur.The broadleaf analytical results for 1990 were<<LLD.w~n A residential well survey was performed in 1990 to monitor the groundwater aquifer north and south of the Cook Plant for radionucles and to identify wells in the vicinity of the plant used to supply water for human consumption.

'Ihe well survey was performed in the communities of Rosemary Beach and Livingston Hills located directly north and south of the plant respectively.

These are the closest communities to the Cook Plant.Results of the survey are summarized on the table and maps at the end of this appendix.Communities to the east of the plant were not involved in the well ensus due to the fact that they are located greater than a mQe from the plant center and are upstream of the prevaQing east to west groundwater flow.Eight of the thirty-seven residences in the Rosemary Beach community were identified as having wells used to supply water for human consumption.

These residences are indicated on the Rosemary Beach Map.Gamma spectrometxy, iodine, and tritium analyses were performed for each sample.The results were all<<LLD.The Livingston Hills community consists of eight residences.

Each residence obtains its drinking water from the Lake Township Municipal Water System.Inactive wells are located at each residence.

None of the inactive wells are currently operational.

Two of the inactive wells.Malmstadt and Scupham, were temporarQy repaired for the purpose of obtaining groundwater samples.These residences are identifie'd on the Livingston Hills Map.Duplicate samples were obtained Rom each well.The spectrometry, iodine, and tritium results for the Mhlmstadt samples re<<LLD.The gamma spectrometry and iodine results for the Scupham 104 samples were<LLD.The tritium results for the Scupham samples wer<LLD and 350 pCi/liter.(See attached Table).An additional well has been established offsite between the plant and Livingston Hills to facilitate future groundwater sampling in this area for the purpose of long-term monitoring of the aquifer (see attached map).Initial gamma spectrometry.

iodine, and tritium analyses were all<LLD.A swamp water sample was obtained to represent standing ground water that may be utQized for animal consumption.

Initial gamma spectrometry, iodine, and tritium analyses were all<LLD.105 Figure 5 INDMiVLL MICHIGAN POWER COMPANY-DONALD C.COOK NUCLFMR PLANT Mlk and Animal Survey Ssuvey Sector Year Distance Mlles Name Address B D H K a b a b N/A N/A N/A N/A N/A N/A 4.75 4.75 10.5 10.5 6.8 6.8 4.25 4.25 5.2 5.2 7.8 7.8 12 12 No milk animals No milk animals No mQk animals No milk animals No milk animals No milk aninmls Gerald Totzke Gerald Totzke Andrews Univ.Andrews Univ.Lee Nehon Lee Nelson G.G.Shuler 6 Sons G.G.Shuler Bt Sons, Norman Zelmer Norman Zelmer Jerry Warmbein Jeny Warmbein Kenneth Tappan Kenneth Tappan N/A N/A N/A N/A N/A N/A 6744 Totzke Rd..Baroda 6744 Totzke Rd..Baroda Berrien Springs Berrien Springs RFD 1, Box 390A, Snow Rd.Baroda RFD 1, Box 390A, Snow Rd.Baroda RFD 1, Snow Rd..Baroda RFD 1, Snow Rd..Baroda 11701 S.Gast Rd..Bridgman 11701 S.Gast Rd., Bridgman Box 184.Avery Rd.,'Ihree Oaks Box 184, Avery Rd., Three Oaks Rt.2, Kruger Rd, Three Oaks Rt.2, Kruger Rd, Three Oaks ther sectors are over water.eporting Year ear prior to reporting year.106 Figure 6 INDIANA MICHIGAN POWER COMPhNY-DONhLB C.COOK NUCLEAR PLANT ResldenUal Land Use Survey House (i Street Address" B a b 2161 2161 2165 2165 3093 3093 11-11-0006-0004-01-7 6-4.1 11-11-0006-0004-09-2 6-4.9 11-11-6800-0028-00-0 6-28 lier Drive, Rosemaxy Beach Rt.ft 1, Rosentaty Rd.lier Drive, Rosemary Beach Rt.tel, Rosemary Rd.Lake Road, Rosemary Beach Rt.(I 1, Rosetnaxy Rd.D a b 5733 5733 1 1-11-0005-0036-01-8 5-36 7500 Thorton Drive 7500 Dtorton Drive 5631 5631 1 1-1 1-0005-0009-07-0 5.25.5 7927 Red Arrow Highway 7927 Red Arrow Highway o F H a a b 10 10 5392 5392 3728 3728 4944 4944 3366 3366 3090 3090 11-11-0008-0015-03-1 8-10.3 11-11-0007-0013-01-4 7-4 11-11-8600-0004-00-1 7-7+8 1 1-1 1-0007-0010-02-3 7-1 0.3 11-11-0007-0010-03-1 7-10.3 8197 Red Arrow Highway 3900 Lbringston Rd.Livingston Road 4212 Lbringston Rd.Wildwood Wildwood Subdbrlsion (8700 Red Armw Hwy.)Livingston Hills 4600 W.Livingston M.Livingston HQIs Subdivision)

Livingston Hills 4600 W.Ltvtngston Rd.(Livingston Hljls Subdlvlslon)

(I)All other sectors are over water.(al Reporting Year (b)Year prior to reporting year.Specific property numbers as listed on the tax rolls were used to tdenttfy houses.Prevtous year's report used lot numbers.The lot numbers rematned the same.~~ltouse s6 was Incornictly addressed the previous year.All other address cha~are minor modlflcauons reflecttng updated address format.

Figme 7 INDMNA MICHIGAN POWER COMPANT-DOMLX)C.COOK NUCXZAR PLANT OKsite Well Survey Results in units of pCi/l%'e11 H-3 I-131 Gamma 8 ec ROSEMARY BEACH Axmstrong'urke Halstead Ten gerstrom Scott Cone Mc Clean acich H 08/29/90 08/29/90 08/29/90 08/31/90 08/31/90 09/-I I/90 09/19/90 09/19/90<200<200<100<100<100<100<200<200 (0.2<0.2<0.2<0.1 (0.1<0.2<0.2<0.2<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD Scup ham Duplicate New Well'uplicate 11/12/90 11/12/90 11/29/90 11/29/90 LXVINGSTON HIL Swamp Water 09/10/90 Malmstadt 09/26/90 Duplicate 09/26/90<20Q<IOQ<200<200 350 (100<200<O.l<0.1<0.1<0.2<Q.2<Q.l<0.2<LLD (LLD<LLD (LLD<LLD<LLD 108 Figure 8~~0 O~~~'c Q((0'~~,/J Il Goo q(,a 0'(!)oh G/J//I~(I.(I,'.~v, q(!..6 ,aV(.)'(('(lt Pf;lo e 19l APProximate location of new well ,I'ivin ston Hills Well Census Ma Xndicates location of sampled~~wells.Location of Swamp Sample 4~avaaMY 0~I;II il//~Ill t/(~('(~%g JI;1('ll Z O Q O,O oo ()Ot 4l O S 109 M(CH'AN Figure 9 o~~o g 33oqg z Rosemar Beach Well Census Ma"-Indicates residence with drinking water well.0 0 0 0 0 0 1 a)\o o o~~~~~~~~~o~~A,~[1 0 APPENDIX G SUlHMARY OF THE PRE-OPERATIONAL RADIOLOGICAL MONITORING PROGRAM 111 SUMKEQtY OF THE PREOPERATIONAL RADIOLOGICAL MONITORING PROGRAM A preoperational radiological environmental monitoring program was performed for the Donald C.Cook Nuclear Plant from August 1971 until the initial criticality of Unit 1 on January 18, 1975.'Ihe analyses of samples collected in the vicinity of the nuclear power plant were performed by Eberline Instrument Corporation.

The summary of the preoperational program presented in this appendix is based on the seven semi-annual reports covering the period.The purpose of this summary is to provide a comparison of the radioactivity measured in the environs of the plant during the pre-start up of Unit 1 and the radioactivity measured in 1990.As stated in the report for the period of July 1 to December 31, 1971 th.the purposes of a preoperational radiological monitoring program include:~t (a)"To yield average values of radiation levels and concentrations of radioactive material in various media of the environment.(b)To identify sample locations and/or types of samples that deviate from the averages.(c)To document seasonal variations that could be erroneously interpreted when the power station is operating.(d)To indicate the range of values that should be considered"background" for various types of samples.(e)To"proof test" the environmental monitoring equipment and procedures prior to operation of the nuclear power station.(h)To provide baseline information that will yield estimates of the dose to man, if any, which wQl result from plant operation." The discussion that follows is for the'various sample media collected and analyzed in both the preoperational period and in 1990.alyses, such as strontium-89 and strontium-90 in milk and air 112 particulates performed during the preoperational but not required in 1990, are not discussed.

The gross beta activity in air particulate Qlters ranged Gom 0.01 to 0.17 pCi/m~from the middle of 1971 to the middle of 1973.In June of 1973 and in June of 1974 the People's Republic of China detonated atmospheric nuclear tests.As a result there were periods during which the gross beta results were elevated to as high as 0.45 pCi/m~with no statistically significant differences between indicator and background stations.By the end of the preoperational period the values were approximately 0.06 pCi/m~.The gamma ray analyses of composited air particulate Qlters showed"trace amounts" of Qssion products, Ce-144, Ru-106, Ru-103, Zr-95, and Nb-95, the results of fallout from previous atmospheric nuclear tests.Cosmogenically produced beryllium-7 was also detected.The direct radiation background as measured b thermo)uminescent dosimeters (TLD)ranged between 1.0 and 2.0 mRem/week during the three and one-half years period.MQk'samples during the preoperattonal period were analyzed for iodine-131 and by gamma ray spectroscopy (and for strontium-89 and strontium-90).

All samples had naturally occurring potassium-40 with values ranging between 520 and 2310 pCi/liter.

Cesium-137 was measured in many samples after the two atmospheric nuclear tests mentioned above.The cesium-137 activity ranged from 8 to 33 pCi/liter.

Iodine-131 was, measured in four'milk samples collected July 9, 1974.The values ranged between 0.2 and 0.9 pCi/liter..

Lake water samples were collected and analyzed for tritium and by gamma ray spectroscopy.

Tritium activities were below 1000 pCi/liter and typically averaged about 400 pCi/liter.

No radionuclides were detected by gamma ray spectroscopy.

Gamma ray spectroscopy analyses of lake sediment detected natural abundances of potassium-40, uranium and thorium daughters, and traces of cesium-137 below O.l pCi/g which is attributed to faHout.Gamma spectroscopy analyses of Qsh detected natural abundances of potassium-40 and traces of cesium-137, the latter attributed to fallout.D~king water analysis was not part of the preoperational program.114 APPENDIX H

SUMMARY

OF THE BLIND DUPLICATE SAMPIK PROGRAM 115 SUMNARY OF THE BUZZ')DUPLICATE 8AMPLF.PROGRAM The Plant procedure for implementing the blind duplicate sam ling e samp program was revised in 1990.The procedure revision was performed to allow for the preparation and use of spiked samples in the duplicate sample program.Analysis comparisons using samples with detectable activity, as referenced in Regulatory Guide 4.15, are a more useful indicator of an analytical lab's performance.

Ten duplicate analyses were performed in 1990.The samples and results are listed in the attached table.Nine of the samples were within acceptable limits.The duplicate TLD sample feQ outside the acceptable limits.A o limi.comparison was subsequently made between the onsite, offsite, and control'group TLD's.116 BLlND DUPLICATE SAMPLE PROGRAM-1990 Sample Routine Sam 1e Blind Du ilcate W heceptable Qmits 04/06(90 Milk Gamma-K-40 pCl/liter 1240+120 1230 2 120 1120-1360 04/22/90 1LD-Contxol (First gtr.)05/06/90 Groundwater 11/03/90-Airborne 11/09/90 11(08/90-Waterborne 11/13/90 I 0/05/90.Waterborne I l(17/90 Well-N5 N/A N/A N/A H-3 pCI(liter Gross Beta pCI/m3 1-131 pCI/liter H-3 pCI/liter 700 k 100.014 2.001 (200 Env.Supr.OIIIce Direct Radiation-10.8 k 0.2 mR/std month 8.3%0.3(b)650 k 90.014 2.001 110'0 10.6-11.0 600-800.013-.015 N/A N/A 10/14/90-11/20/90 ll/12/90 11/12/90 ll/12/90 Waterborne Groundwater Groundwater Groundwater N/A 1A 12 H-3-pCI/liter H-3-pCI/liter H-3-pCl/liter 1500 k 400 2700 k 400 1000 k 400 1100 t 100 2700 k 100 710 X 100 Gamma Isotopic (c)All nuclides<<LLD All nuclldes a OLD N/A 1100 k 1900 2300 k 3100 600 k 1400{a)hll blind samples were within acceptable limits unless otherwise noted.(bl Hltnd sample not wtthln acceptable Itmtts.(c)Samples with detectable activity were within acceptable ltmtts.The Iab has be detec e activity.tructed to perform future duplicate analyses using samples wit APPENDIX I 1 SUbQKARY OF THE SPIKE AND BLKNK SAMPLE PROGRAM 118 SURSGLRY OF THE%TEE AND BLANK KQhKPLE PROGRAM The following tables list the blanks and spiked water samples anal ed uring 1990 for the Teledyne Isotopes In-house Quality Assurance Program.Analysis date is analogous to collection date to identify weekly analysis of samples.One analysis for gross beta activity was reported outside the speciQed acceptable ranges.No documented corrective action was taken because in accordance with Section 9.1 of our Quality Control Manual (IWL-0032-365), the acceptance criteria for a particular analysis"is within 3 standard deviations of the EPA one sigma, one determination as specified in the Environmental Radioactive Laboratory Studies Program EPA-600/4-81-004, Table 3, Page 8".For gross beta activity below 100 pCi/1 the control level at which corrective action must be taken is 2 15 pCi/1.The quality assurance department operationally investigates gross beta spike results which exceed the one standard deviation, one determination levels (2 5 pCi/1), because of previous experience in reporting results within that level.

Teledyne Isotopes hx-House SyQred Sample Results 1990-Water Gross Alpha Gross Beta Gamma (Eu-154)H-3 tG)112 5 21t 5 1.4 k 0.2 E 05 2.7 k 0,3 E 03 6-16 16-26 1.2-1.6 E 05 2.4-3.0 E 03 An i D A ivi i 1 88267 88268 88269 88270 88271 92203 99204 9205 2206 95348 95349 95350 95351 S7594 97595 97596 97597 00652 00653 00654 00655 00988 04157 04158 04159 04160 06920 06S21 06922 06923 01/03/90 01/10/90 01/17/90 Ol/24/90 Ol/31(90 02/07/90 02/14/90 02/21/90 O2/28/SO 03/07/So 03/14/90 03/21/90 03/28/90 04/04/90 04/ll/90 04/18/90 04/25/90 05/02(90 05/09/90 05/16/SO 05/23/90 05/30/90 06/06/90 06(13/eo 06/20/So 06/27/90 07/05/90 07/11/90 07/18/90 07/25/SO 1.1 2 1.1 2 1.4 2 1.5 0 1,4%1.6 k 1.5 k 1.5 k 1,6%1.1 k 1.3 k 1.5 2 1.2 k 1.1 k 1.5 k 1.5 k 1,2 k 1.2 k 1.3 2 1.4 k 7.6 k 1.2 2 1.1 2 1.4 k 1.1 k 1.2 k 9.1 4 9.1 k 1.2 k 1.0 k 0.2 E Ol 0.2 E 01 0.2 E Ol 0.2 E Ol 0.2 E Ol 0.2 E 01 0.2 E Ol 0.2 E 01 0.2 E 01 0.2 E 01 0.2 E 01 0.2 E 01 0.1 E 01 0.2 E Ol 0.2 E 01 0.2 E 01 0.2 E 01 0.2 E 01 0.2 E 01 0.2 E 01 1.3 E QO 0.2 E Ol 0.2 E 01 0.2 E 01 0.2 E 01 0,2E01 1.6 E 00 1.6 E 00 0.2 E 01 0.2 E 01 120 GROSS ALP]~g~~OS691 09692 09693 09694 09695 13338 13339 13340 13341 15855 15856 15857 15858 15859 18566'18567 18568 18569 21047 21048 21049 21050 08/01/go 08/08/90 08/I5/90 08/22/90 08/29/SO 09/05/90 09/12/90 09/19/go 09/26/SO 10/03/90 10/10/90 10/17/90 Io/24/gO lo/31/90 11/07/90 11/14/90 Il/21/SO 11/28/go 12/05/90 12/12/90 12/19/SO 12/26/90 1.1 2 9.6 k 1.2 k 1.4 2 1.3 2 1.3 k 1.3 k 1.2 k 1.3 2 1.3 k 1.1 2 1.2 k 1.1 2 1.3 2 1.4 k 1.2 2 1.2 4 1.2 2 1.3 2 1.1 2 1.3 2 1.3 2 0.2 E 01 1.5 E 00 0.2 E 01 0.2 E Ol 02EOI 0.2 E 01 0.2 E 01 0.2 E 01 0.2 E Ol 0.2 E 01 0.2 E 01 0.2 E Ol 0.2 E 01 0.2 E 01 02EOI 0.2 E 01 0.2 E 01 0.2 E 01 0.2 E Ol 0.2 E Ol 0.2 E Ol 0.2 E Ol GROSS BETA 88262 88263 88264 88265 88266 92199 92200 92201 92202 S5344 95345 95346 95347 01/03/90 01/10/90 01/17/90 01/24/eo 01/31/90 02/07/90 02/14/90 02/21/90 02/28/90 03/07/SO 03/14/90 03/21/90 03/28/90 1.7 k 1.7 2 1.7 k 1.9 k 2.0 k 1.7 k 1.8 k 1.9 k 2.0 k 1.8 2 1.8 k 2.0 k 1.6 k 0.1 E 01 0.1 E 01 0.1 E 01 0.1 E 01 0.1 E 01 0.1 E 01 O.l E 01 0.1 E 01 0.1 E 01 0.1 E 01 0.1 E 01 0.1 E 01 O.l E OI 121 GROSS BET+(~~)97590 97591 97592 97593 00647-00648 00649 00650 00651 04153 04154 04155 04156 06916 06917 06918 06919 09686 09687 09688 09689 9690 13334 13335 13336 13337 15850 15851 15852 15853 15854 18562 ,18563 18564 18565 21043 21044 21045 21046 04/04/90 O4/11/SO 04/18/9Q 04/25/90 05/02/90 05/Q9/SO 05/16/9Q 05/23/90 05/30/9Q 06/06/90 06/13/90 06/20/9Q 06/27/90 07/05/90 07/11/90 07/18/90 07/25/90 08/Ol/SO OS/OS/SO 08/15/90 08/22/SO 08/29/90 09/QG/SO 09/12/90 09/19/90 09/26/90 IO/O3/SO 10/10/90 10/17/90 10/24/90 10/31/90 ll/07/90 11/14/90 11/21/90 ll/28(90 12/05/90 12/12/90 12/19/90 12/26/90 164 01 Eol 1.72 0.1 E 01 182 01 Eol 1.82 0.1 E 01 1.7%0.1 E 01 1.72 O.l E 01 1.9%O.l E 01 1.9%0.1 E 01 1.8%O.l E Ol 2.0%O.l E 01 2.0%0.1 E 01 1.7%0.1 E 01 1.7 k 0.1 E 01 1.9 k 0.1 E Ol 2.02 0.1 E 01 1.7 k O.l E Ol 1.7%O.l E 01 1.84 O.l E 01 1.82 0.1 E 01 1.9 2 0.1 E Ol 1.82 O.l E 01 1.62 O.l E 01 1.7R O.l E 01 1.3%0.1 E 01 2.0 k 0.1 E 01 2.0 2 0.1 E Ol 1.8 2 0.1 E 01 2.0 2 O.l E 01 2.0 k 0.2 E 01 1.9%O.l E Ol 2.1 k O.l E 01 2.1 k 0.2 E Ol 1.9 k 0.1 E 01 2.0%0.1 E 01 1.8 k 0.1 E Ol 1.7%0.1 E 01 2.0%0.1 E Ol 2.04 O.l E Ol 1.8 k 0.1 E 01 122 GA5KbfA Nlu-154)88292 88293 88294 88295 882S6 92223 92224 92225 92226 95368 95369 95370 95371 97614 97615 97616 97617 00676 00677 00678 00679 00680 , 04177 04178 04179 04180 06940 06941 06942 06943 09716 09717 09718 09719 0972Q 13358 13359 13360 13361 15880 15881 15882 15883 15884 Ol/03/9Q 01/10/90 01/17/90 01/24/90 01/31/90 02/07/90 02/14/90 02/21/90 02/28/90 03(07(SQ 03/14/90 03/21/90 03/28/90 04/04/SO 04/11(90 04/18/90 04/25/90 05/02/90 05/09/90 05/16/90 05/23/90 05/30/90 06/06/90 06/13/9Q 06/20/90 06/27/90 07/05/90 07/11/SO 07/18/90 07/25/SO 08/01(9Q 08/08/90 08/15/90 08/22/90 08/29/90 OS/05/SO 09/12/SO 09/19/90 09/26/90 10/03/90 10/10/90 10/17/90 10/24/90 10/31/90 1.46 2 0.15 E 05 1.44 2 0.14 E 05 1.45 2 0.15 E 05 1.39 2 0.14 E 05 1.46 2 0.15 E 05 1,44 2 0.14 E 05 1.43 2 0.14 E 05 1.40 2 0.14 E,05 1.40 2 0.14 E 05 1.43 2 0.14 E 05 1.41 k 0.14 E 05 1.46 2 0.15 E 05 1.37 2 0.14 E 05 1.40 k 0.14 E 05 1.37 k 0.14 E 05 1.42 2 0.14 E 05 1.4?k 0.15 E 05 1.43 k 0.14 E 05 1.44 k 0.14 E 05 1.43 2 0.14 E 05 1.45 2 0.15 E 05 1.42 k 0.14 E 05 1.40 k 0.14 E 05 1.43 2 0.14 E 05 1.43 2 0.14 E 05 1.44 2 0.14 E 05 1.42 2 0.14 E 05 1.41 2 0.14 E 05 1.41 2 0.14 E 05 1.44 2 0.14 E 05 1.45 2 0.15 E 05 1.44 2 0.14 E 05 1.42 2 Q.14 E 05 1.35 2 0.14 E 05 1,38 2 0.14 E 05 1.46 k 0.15 E 05 1,22 k 0.12 E 05 1.41 k 0.14 E 05 1.33 2 0.13 E 05 1.38 2 Q.14 E 05 1.38 k 0.14 E 05 1.44 2 0.14 E 05 1.42 k 0.14 E 05 1.40 k 0.14 E 05 123 GAhBKh (Eu-154)(Cont.)18586 18587 18588 18589 21067 21068 21069 21070 11/0?/90 11/14/90 II/21/90 I I/28/90 12/05/90 12/12/90 12/19/90 12/26/90 1.39 i 0.14 E 05 1.42 2 0.14 E 05 1.44 2 0.14 E 05 1.35 2 0.14 E 05 1.45 2 0.15 E 05 1.42 2 0.14 E 05 1.43 k 0.14 E 05 1.40 k 0.14 E 05 88277 88278 88279 88280 88281 92211 92212 2213 2214 95356 95357 95358 95359 97602 97603 97604 97605 00661 00662 00663 00664 00665 04165 04166 04167 04168 06928 06929 06930 06931 701 TRITHJM-QX-3)An fs D e 01/03/90 Ol/10/90 Ol/17/90 01/24/90 01/31/90 02/07/90 02/14/90 02/21/90 02/28/90 03/07/90 03/14/90 03/21/90 03/28/90 04/04/90 04/11/90 04/18/90 04/25/SO 05/02/90 05/09/SO 05/16/90 05/23/90 05/30/90 06/06/90 06/13/90 06/20/90 06/27/90 07/05/90 07/11/90 07/18/90 07/25/90 08/01/90 A tivi Ci 1 2.7 2 0.2 E 03 2.7 2 0.1 E 03 2.6 2 0.1 E 03 2.9 2 0.1 E 03 2.8 2 Q.l E 03 2.6 2 0.1 E 03 2.9 2 O.l E 03 2.7 2 0.1 E 03 2.5 2 0.1 E 03 2.7%0,1 E 03 2.6k O.l E 03 2.8 k O.l E 03 2.8 2 O.l E 03 2.7 2 O.l E 03 2.8%0.1 E 03 2.5 2 0.1 E 03 2.8 k 0.1 E 03 2.7 2 O.l E 03 2.7 2 0.2 E 03 2.6%0.1 E 03 2.8k 0.1 E 03 2.7 k 0.1 E 03 2.5 2 0.1 E 03 2.5 2 0.1 E 03 2.4 2 0.2 E 03 2.5 2 0.1 E 03 2.6k 0.1 E 03 2.5 2 0.1 E 03 2.4 2 0.1 E 03 2.7 2 0.1 E 03 2.4 2 0.1 E 03 124 09702 09703 09704 09?05 13346 13347 13348 13349 15865 15866 15867 15868 15869 18574 18SVS 18576 18577 21055 21056 21057 21058 08/08/90 08/15/90 08/22/90 08/29/SP OS/05/9Q 09/12/go 09/IS/90 09/26/90 IQ/03/90 IO/IO/SO 10/17/gp 10/24/90 10/31/90 ll/07/go 11/14/SQ ll/21/90 ll/28/90 12/OS/SO 12/12/90 12/19/90 12/26/90 2.4 2 2.7 f 2.5 2 2.4 k 2.4 2 2.6 2 2.5 2 2.6 2 2.6 2 2.5 2 2.5 k 2.5 J 2.5 k 2.7 k 2.4 2 2.4 2 2.6 2 2.6 k 2.8 k 2.7 k 2.?2 O.I E 03 0.1 E 03 O.l E 03 0.1 E 03 0.1 E 03 0.1 E 03 O.l E 03 0.1 E 03 0.1 E 03 0.1 E 03 0.1 E 03 0.1 E 03 O.l E 03 0.1 E 03 O.l E 03 0.2 E 03 0.1 E 03 0.1 E 03 0.1 E 03 0.1 E 03 O.l E 03 12S Teledyne Isotoyes In-Bourn%saks Sample Results 1990-Water GROSS ALE%BL 88257 88258 88259 88260 88261 92195 92196 92197 92198 95340 95341 95342 95343 97586 7587 7588 7589 00594 005S5 00596 00597 00598 04149 04150 04151 04152 06912 06913 06914 06915,'9681 09682 09683 09684 09685 Ol/03/90 01/10/90 01/17/90 01/24/90 01/31/90 02/07/90 02/14/90 02/21/90 02/28/90 03/07/90 03/14/90 03/21/9Q 03/28/90 04/04/eo 04/11/90 04/18/90 04/25/90 05/02/90 05/09/90 05/16/90 05/23/90 05/30/90 06/06/90 06/13/90 O6/2O/SO 06/27/SO 07/05/90 07/11/90 07/18/90 07/25/90 08/01/90 08/08/9Q 08/15/So o8/22/eo 08/29/90 L.T.7.E-01 L.T, 6.E-01 L.T.5.E-01 L.T.6.E-01'.T.5.E-01 L.T.5.E-OI L.T.7.E-01 L.T.3.E-01 L'.T.6.E-01 L.T.6.E-Ol L.T.6.E-01 L.T.4.E-01 L.T.4.E-Ol L, T.4.E-01 L, T.6.E-01 L.T.5.E-ol L.T.4.E-01 L.T.6.E-01 L.T.6.E-01 L.T.4.E-01 L.T.4.E-01 L.T.8.E-01 L.T.4.E-01 L.T.4.E-ol L.T.6.E-01 L.T.5.E-ol L T.4.E-ol L.T.7.E-ol L.T.7.E-01 L.T.7.E-01 L.T.4.E-Ol L.T.6.E-01 L.T.5, E-Ol L T.'4.E-01 L.T.5.E-01 126 GROSS~gal(c~)13330 13331 13332 13333 15845 15846 15847 15848 1584S 18558 18559 18560 18561 21039 21O4O 21041 21042 09/05/90 os/12/so 09/IS/90 09/26/90 10/03/so 10/10/gQ IO/17/go 10/24/90 10/31/so II/07/gp ll/14/go 11/21/90 11/28/SO 12/05/SQ 12/12/90 12/19/SO 12/26/90 L.T.5.L T.8.L.T.4.L.T.4.L.T.5.L.T.4.L.T.4.L.T.4.L T.6.L.T.6.L.T.4.L.T.7.L.T.4., L.T.6.L.T.6.L.T.4.L.T.5.E-pl E-01 E-01 E-01 E-01 E-01 E-OI E-Ol E-Ol E-ol E-Ol E-01 E-01 E-01 E-01 E-01 E-01 88257 88258 8825g 88260 88261 92195 92196 92197 92198 95340 95341 95342 95343 97586 97587 97588 97589 00594 00595 00596 00597 00598 01/03(gp 01/10/90 Ol/17/SQ Ol/24/gp 01/31/gp 02/07/SO o2/14/so 02/21/SO 02/28/SO O3/07/go 03/14/go 03/21/90 03/28/90 04/04/90 04/ll/90 04/18/90 04/25/90 o5/o2/so 05/09(90 05/16/90 05/23/90 05/30/90 LT, L.T, L.T.L.T.L.T.L.T.L.T.L.T, L.T.L.T.L.T.L.T.L.T.L.T.L.T.L.T.L.T.L.T.L.T.L.T.L.T.L.T.8.E-01 9.E-OI 8.E-Ol 7.E-01 7.E&I 7.E-Ol 7.E-01 7.E-01 8.E-ol 7.E-01 8.E-Ol e.E-Ol 7.E-ol 8.E-OI 7.E-01 8.E&1 7.E-01 8.E1 7.E-Ol 6.E-01 7.E-01 8.E-Ol 127 CROSSazmg, i 04149 04150 04151 04152 06912 06913 06914 06915 09681 09682 og683 09684 09685 1333O 13331 13332 13333 15845 15846 1584?5848 849 8558 18559 18560 18561 21039 21040 21041 21042 06/06/90 06/13/90 06/20/90 06/27/90 07/05/90 07/ll/90 07/18/90 07/25/90 o8/ol/so o8/o8/go 08/15/90 o8/22/so 08/29/SO 09/05/SO 09/12/go 09/19/90 09/26/gO 10/03/go 10/lo/go 10/17/90 10/24/90 10/31/90 11/07/9Q , ll/14/9Q ll/21/gO 11/28/90 12/o5/so 12/12/90 12/19/SO 12/26/90 L.T.7.F-Ol L.T.7.E-01 L.T.8.E-01 L.T.7.E-OI L T.8.E-01 L.T.7.E-01 L.T.8.E-01 L.T.8.E-01 L.T.8.E-01 L.T.7.E-Ol L.T.8.E-01 4 T.7.E-01 L.T.8.E-01 LT.8.E-ol L.T.8 E-Ol L.T.7.E-01 L.T.8.E-01 L.T.8.E-01 L.T.8.E-01 L T.1.EOO L, T.7, E-Ol L.T.8.E-Ol L.T.8.E-01 L.T.7.E-01 L.T.7.E-01 L.T.8.E-01 L..T.8.E-01 L.T.8.E-01 L.T.9.E-01 L.T.8.E-01 TRITM-g-3)8828?88288 88289 88290 88291 92219 99220 9 221 22 01/03/90 Ol/10/90 01/17/90 OI/24/90 Ol/31/So 02/07/90 02/14/9Q 02/21/90 02/28/90 L.T.L.T.L.T.L.T.L.T.L.T.L.T.L.T.L.T.2.E02 2.E02 l.E02 2.E02 I.E02 2.E02 I.E02 I.E02 1.E02 128 TRImJM-QX-8)(Cont.)95364 95365 95366 95367 97610 97611 97612 97613 00671 00672 00673 00674 00675 04713 04714 04175 04176 06936 06937 06938 06939 09711 09712 09?13 09714 09715 13354 13355 13356 13357 15875 15876 15877 15878 15879 18582 18583 18584 18585 21059 21064 21065 21066 03/07/90 03/14/90 03/21/90 03/28/90 04/04/SO 04/11/90 04/18/90 04/25/90 05/02/90 05/09/SO 05/16/SO 05/23/90 05/30/90 06/06/90 06/13/90 06/20/90 06/27/90 07/05/90 07/11/90 07/18/90 07/25/90 08/01/9Q 08/08/90 08/15/90 08/22/90 08/29/90 09/QS/9Q 09/12/90 09/19/90 09/26/90 10/03/SO 10/IQ/90 10/17/90 10/24/90 10/31/90 11/07/90 11/14/90 ll/21/90 11/28/90 12/05/90 12/12/90 12/19/90 12/26/90 L.T.1.E02 L.T.2.E02 L T.2.E02 L.T.2.E02 LT.1.E02 L.T.2.E02 L.T.2.E02 L.T.1.E02 L.T.I.E02 L.T.2.E02 L.T.l.E02 L.T.1.E02 L.T.l.E02 L.T.2.E02 L,T.l.E02 L.T.1.E02 L.T.2.E02 L.T.2.E02 L.T.I.E02 L.T.l.E02 L.T.l.E02 L.T.l.E02 L.T.I.E02 L.T.2.E02 L.T.l.E02 L.T.1.E02 L.T.2.E02 L.T.l.E02 L.T.2.E02 L.T.1.E02 LT.2.E02 L.T.2.E02 L.T.l.E02 L.T.1.E02 L.T.2.E02 L.T.1.E02 L T.l.E02 L.T.2.E02 LT.1.E02 L.T.l.E02'L.T.2.E 02 LT.2.E02 L.T.2.E02 12Q APPENDIX J TLD QUALXTF CONTROL PROGRAM 130 TLD QUAUXF CONTROL PROGRAMTeledyne Isotopes performs an in-house quality assurance testing program for the environmental TLD laboratory.

On a quarterly basis the QA manager exposes groups of TLDs to three different doses using a known cesium-137 exposure rate.Typical exposures are between 20 and 80 mR.The TLDs are readout on each of the three Model 8300 Readers in the environmental TLD laboratory and the calculated results are reported to the QA manager.The QA manager evaluates the results and writes a report discussing the performance of the labs.For 1990 all results were within the requirements of Regulatory Guide 4.13, Section C.The standard deviations were less than 7.5%and the variations from the known were less than 3(P/0.The accompanying graphs show the normalized deviations of the measured doses to the exposure doses for each of the three readers.131 QUALITT CON QL-TLDS TLD REM)205 0.5 0 IX/$.'I~'Io I g>>~y r 1~~af 01/89 07/89 10/89 01/90 07/90 10/90 01/91 0~-Low Dose 0--l1lddle Dose Q High Dose QUALITY CONTROL-TLDs TLD RFMDER 211 1.5 0.5/o/ii/S/./'~~~a oP/~ag~p 0l/89 0</89 07/89 lo/89 0 l/90 On/90 07/90 lo/90 0 l/9 l0~>>Low Oose 0--Middle Oose C}-Higt>Oose QUALI CONTROL-'OLDS READER 242 0.8 0.6 0.4 D.2 4~/<</,/r 0 r'~cay~~~r 0-~aay~-0.6 01/89 07/89 10/89 Ol/90'4/90 07/90 10/90 01/91 0~-Low Dose 0 t1lddle Dose 0 Htgh Dose