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)

ACCESSION NBR:9105030255 DOC.DATE: 90/12/31 NOTARIZED: NO DOCKET FACIL:50-315 Donald C. Cook Nuclear Power Plant, Unit 1, Indiana & 05000315 50-316,Donald C. Cook Nuclear Power Plant, Unit 2, Indiana 6 05000316 AUTH. NAME FITZPATRICK,E.

'UTHOR AFFILIATION 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.

D DISTRIBUTION CODE: IE25D COPIES RECEIVED:LTR TITLE: Environmental Monitoring Rept (per J E Tech Specs)

SIZE:

NOTES RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD3-1 LA 3 3 PD3-1 PD 1 1 COLBURN,T. 1 1 D INTERNAL: AEOD J3S TPAB 1 1 NRR/DREP/PRPB11 2 2 D RH IiL 1 1 RGN3 DRSS/RPB 1 1 RGN3 FILE 02 1 1 EXTERNAL EGGG S IMPSON F F 2 2 NRC PDR D

D D

NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR 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 R

ADOCK 05000315 PDR 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 Plant Design and Operation A.2 NPDES Permit and State Certification Reporting A.3 Environmental Protection Plan A.4 Potentially Significant Unreviewed Environmental Issues A.5 NPDES Permit B. Environmental Monitoring-Herbicide Applications Macrofouler Monitoring and Treatment IV. Solid Radioactive Waste Treatment, System 2 V.

~ Radiological Environmental Monitoring Program

~

(REMP) 2 A.l Changes to the REMP A.2 Radiological Impact of Donald C. Cook Nuclear Plant Operations B. Land Use Census and Well Report VI. Conclusion

LIST 0 PPENDICES

~gen~di ~ Q t~e NPDES Non-Routine Report - 1990 NPDES Permits - 1990 Herbicide Application Report - 1990 IV Macrofouler Monitoring Program - 1990 1990 Annual Report: Radiological Environmental Monitoring Program Radiological Environmental Monitoring Program Summary - 1990 Data Tables Analytical Procedures Synopsis

.D 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 these requirements and represents the Annual Environmental fulfill 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) 6,559,000 4,990,730 Unit Service Factor (8) 79.2 55.4 Unit Capacity Factor - MDC* Net (8) 70.5 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 pole ¹ B426-70. 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 pole ¹ B426-1, 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 no adverse 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 Clam-Trol (a proprietary molluscicide) was released to Lake Michigan in detectable concentrations during treatment of various Cook Plant water systems for zebra mussels.

October 30, 1990 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

STATE OF, MICHIGAN NATURAL RESOURCES COMMISSION

@~m<fgENTAI-0, T MYERS PAIRS RAY D POUPORE DEPARTMENT OF NATURAL RESOURCES STEVENS T. MASON BUILDING P.o< BOX 30029 LANSING. Ml 98909 DAVID F. HALES. &reaor 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 I99 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, h

)

~

g (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 Compliance and Enforcement, SWQD III, 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 to Lake Michigan; and one billion eight hundred ninety mil'on from.outfal'01 (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:

Dischar e Limitations 1bs dav Other Limitations Monitorin Requirements Effluent Monthly Daily Monthly Daily Measurement Sample Characteristic ~aveea e maximum ~aveea e Aax'imam Flow (MGD) (report) (report) Daily Report Tota Daily Plow Temperature ('F)

Intake (report) Daily Read Discharge (report) Daily Rea 9

Heat Addition (BTU/Hr) 15.5 x 10 Daily Calculation Total Residual Chlorine (TRC)**

Continuous Use 0.036 mg/1 5x Weekly Grab Intermittent Use 0.2 mg/1 Sx Weekly Grab TRC Discharge Time (report) 5x Weekly Report Disc' ime Outfall Observation Daily Visual Daily Daily Minimum 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:

Dischar e Limitations lbs/dav Other Limitations Monitorin Re uirements Effluent Monthly Dailv Monthly Daily Measurement Sample ~

Characteristic A~veva e Naximum averaae 'Maximum Freauencv ~ve Flow (MGD) (report) (report) Daily Per Report Total Occurrence Daily Flow Total Suspended 30 mg/1 100 mg/1 Weekly Per Grab Solids Occurrence

• 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:

Dischar e Limitations lbs/dav Other Limitations Aonitorin Re uirements Effluent Monthly Daily Monthly Daily Aeasurement Sample Characteristic ~Avera e ., Maximum ~Avera e Maximum Freouenc TWle Flow (NGD) (report) (report) Daily Per Report Total Occurrence Daily Flow Total Suspended 30 mg/1 100 mg/1 Daily Per Grab Solids Occurrence**

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 PART I Section A.

4. 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:

Dischar e Limitations 1bs/dav Other Limitations Monitorin Requirements Effluent Monthly Daily Monthly Dai' Measurement Sample Characteristic ~Avexa e Maximum ~Aveea e Maximum Flow (MGD) (report) (report) Daily Per Report Total Occurrence Dai' F'ow Total Suspended 30 mg/1 100 mg/1 Daily Per Grab Solids 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 to Lake Michigan. Such discharges shall be limited and monitored by the '04S permittee as specified below:

Dischar e Limitations lbs/dav Other Limitations Nonitorin Requirements Effluent Monthly Daily Monthly Daily Neasurement Sample Characteristic ~Av era e, Maximum ~Av eve e Maximum Retained Self-Monitorin Re uirements (See Part I.S.2.b.) Durin Discharge Outfall Observation 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 PART I Section A.

6. 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.

SAMPLE SAMPLE DESIRED CONSTITUENT 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 P orting :

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; all retained self-monitoring requirements have been complied with and a year-to-date log has been maintained, (2) 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 flow rate(s) (if part of retained self-monitor'ng results) is if'he (3)

(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 PART I Section B.

3. Definitions

a. 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 PART II Section A.

6. Spill Notification The 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 if permit, or the application of any provision of this permit to any circumstances, 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 FREiRUENCY TYPE OF SAMPLE Flow Continuous pH Continuous Daily maximu, minimum Cadmium At times of boiler cleaning Grab water discharge Oil 5 Grease Weekly Gran Sul fa te ( SO<) At all times when regeneration of 24-Hr. "anoos' ion exchange resins occurs Chloride (CL) Weekly 24-Hr, Composi te Total Phosphorus Weekly 24-Hr. Composite Chemical Oxygen Demand Weekly 24-Hr. Composite Total Dissolved Solids At all times when regeneration of 24-Hr. Composite ion exchange resins occurs Monitoring requirements for sanitary wastewaters prior to discharge into the ground:

VENCY REPORT PARAMETER TO BE MEASURED ~FRE Flow Continuous State which seepage area is List when seepage areas List beginning and utilized are alternated ending date and time being 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 ~FRE UENCY TYPE OF SAMPLE Record static water elevation quarterly Reading at time of sampling pH quarterly Grab Total Chranium (Cr) guarterly Grab Copper (Cu) quarterly Grab Sulfate(S04) quarterly Grab Chloride (Cl) quarterly Grab Hardness quarterly Grab Nitrate-Nitrogen as N quarterly Grab Sodium (Na) Ouar terly Grab Polychlorinated Biphenyls Ouarterly Grab Chemical Oxygen Demand quarterly Grab Boron (B) quarterly Grab Total Phosphorus (P) quarterly Grab Total Dissolved Solids quarterly Grab Cadmium quarterly Grab Oil 5 Grease quarterly Grab Results of all monitoring required in Part III of this permit shall the Plainwell District Office of the l/aste Management be submitted to Division.

STATE OF MICHIGAN AL RESOURCES COMMISSION THOMAS J. ANDERSON MARLEN FLUHARTY GORD YER KERR ELLW ATTSON JAMES J. BLANCHARD. Governor O. STE YEAS DEPARTMENT OF NATURAL RESOURCES RAYMOND POUPORE STEVENS T. MASON BUILDING RZCF! ~Z."- J P.o. BOX 80028 LANSING, Ml 48909 DAVID F, HALES. &rector OCf I 0)9"0 ENVIRONS::-N T'AL AFFAIRS October 4, 1990 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 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.

The 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.

28

~ (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

STATE OF MICHIGAN NATURAL RESOURCES COMMISSION TH S J. ANDERSON J, FLUHARTY E. GUYER AMMER JAMES J. BLANCHARD. Governor D A MATTSON O. STEWART MYERS RAYMOND POUPORE 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 Paul D. Zu r, Chief Surface Water guality Division 517-373-1949 cc: Mr. Paul Blakeslee, MDNR Mr. Fred Morley, HDNR

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 of the plant.

Plant: Grass is arowina on all sides

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 9 Sprav, Report 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 1990 Gals. of Lbs. Lbs. Ranvell Gals. Acres Date Location Karmex Krovar 720 H20 Covered 5-'I"-~0 '765 Kxy vard 13? 2000 20 5-~8-90 345 KV Yard 33 1.25 500 5 5-18-90 All unshaved 33 1. 25 500 areas inside the protected area 5-18-90 69 &r vard, 33 1.25, 500 Sewage Ponds, Absorption Pond Road, Site Design Ruildincrs, Sewacre Plants and all other arounds outside the nrotected area

?31 4? 3.75 3500 35 Lbs. T~bs. Gals. Gals. 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.

R.

c/~~~~g J. Cheeney

/~ p 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 their extremely sparse population densitv reports. Because of 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 screens and condenser inlet tunnel. Individuals 02'ling 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 with these monitoring efforts, control strategies were 01.)'oncurrent 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 toward the south end nf Lake Michigan. To date, none users'acilities 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.

ATTACHMENT 1 Environmental Resources Nanagement, Inc.

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 obert L. D r, Ph.D.

Project Scientist 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 Sample Number Flow rate Total gallons Sample Conc. Sub-Sample Velfger "

Volume Volume 'olume Count CK U2 41 gpm 37.108 850ml 75ml 0.75ml 0 10/09/90 CK U2 41 gpm 11,690 800ml 75ml 1.0ml 10/10/90 CK U2 41 gpm 3.989 500 ml 75ml 1.0ml 10/10/90 CK U2 41 gpm 3,710 900ml 75ml 1.0ml 10/10/90 CK U2 41 gpm 2.649 230ml 75ml 1.0ml 10/11/90

'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 Date Organisms Total number Intake Structure 9-13-90 Drefssena polymo~ha 1 (21 mm)

Sphaerlum sp. 12 (1/2 shells)

Gastropoda Lymnaea sp. (BuBmnea) 8 Gonfobasfs sp. 2,1~

Physa sp.

Gyrautus sp. 1 Travel Screen 9-13-90 d 2-1 Drefssena polymorpha 2 (3,20 mm)

Sphaerfum sp. 12 (1/2 shells)

Gastropoda Lymnaea sp. (Bulimnea) 15 Gontobasfs sp. 8 Physa sp. 7 Biomonitor 10-12-90 (sediment and Drefssena polymorpha 2 (3,5 mm) washing from Sphaerfum sp. 20 (1/2 sheQs) hard substrate)

'enotes Itve specttnen

Table 3 Fire Hydrant Sampling Cook Nuclear Power Plant - Fire Hydrant Sampling 19 November 1990 Sample Location Flow Meter Reading Elapsed Flow Rate Total Gallons Asiatic Clams Zebra Mussels Other Start End Time FH 12-HYD-2A 36583.0 36586. 1 10'1 5'4 gpm 310 0-A 0-A Cladophora sp.

36586.1 36590.8 gpm 470 0-J 0-J metal frag.

-FR -FR b l FH 12-HYD-12 36590.8 36596.7 10'9 5'24 gpm 590 0-A 0-J 0-A Ciadophora sp.

36596.7 36602.9 gpm 620 0-J 1-Phtisa sp.

0-FR 0-FR metal frag.

I FH 12-HYD-21 36602.9 36611.1 10'2 gpm 820 0-A 0-A Cladophora sp.

0-J 0-J metal frag.

R -FR FH 12-HYD-11 36611. 1 36620.6 10'5 5'14 gpm 950 0-A 0-A Cladophora sp.

36620.6 36626.3 gpm 570 0-J 0-J 1-Physa sp.

0-FR 0-FR 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 00.46 U2:00 04:00 06.10 06:20 10/8/90 10/9/90 10/9/90 10/9/90 10/9/90 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 00.46 02:00 04:00 06.10 06:20 10/8/90 10/9/90 10/9/90 10/9/90 10/9/90 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 00:46 02:16 04:00 06:10 06:20 10/8/90 10/9/90 10/9/90 10/9/90 10/S/90 10/9/90 Time

~ Conc. CT-1 EZ Target CT-1 Conc. ~ Temp. peg. F 100% mortality

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UNIT 1 NESW Conc. CT-1 ppm and Temperature vs Time 80 60 40 20 0

21:40 00 46 02:10 04.00 06.10 06.16 10/8/90 10/9/90 10/9/90 10/9/90 10/9/90 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  % Mortality Control 4.9 Unit ¹1 Nesw 1.2 Unit ¹2 Circ. Water 13.3 Condenser Outlet Unit ¹2 ESW 95.0*

Unit ¹1 ESW 100.0>>

Unit ¹1 Circ. Water 100.0 Condenser Outlet Mortalities attributable to causes other than Clam-trol October 8-9, 1990

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M U1 NESW 1.2%

U2 ESW 96%

EB Control KB U1 ESW 4.9%

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 Unit ¹1 Circ. Water Condenser Outlet, the recommended residual of 15ppm for 12hrs. was never achieved in the systems treated.

3. Unit ¹1 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 Unit ¹1 8 ¹2'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=IQMllkaI=I% C~C3iXIKS a IQLJC~ s ICBM'I C~CQIQI>C1IRika ICBM P.O. BOX 6901 / WHEELING, WEST VIRGINIA26003 / PHONE: I304) 547-0103 IhGIANA MICHIGAN P04ER CCAPANY IXNALD C. COCK MXLEAR STATION ZEERA NJSSEL INSPECTION LNIT ¹2 1990

1) The keyway inside of bay 1-5, 1"6 south side - approximately the floor, 5'ast of traveling water screen, a 3'quare area contains 5'ff't 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 area contains 25 Zebra Mussels.

southwest corner, 5'ff the floor, a 3'quare

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 floor a 3'quare area contains 1 Zebra Mussels.

5'ff the

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 as ¹6 above (1-5, 1-4), approximately 20'ff the floor, a square area contains 5 Zebra Mussels.

8) Inside Unit ¹1, east southwest bay, on the east wall, approximately the floor, a 3'quare area contains 32 Zebra Mussels. 5'rom

9) On the east wall off'he circulating pump ¹13 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 Unit ¹1 - 1990 Page 2 ~

10) Unit ¹1 east southwest bay inside north wall, approximately 5'rom the floor, a 3'quare area contains 1'I Zebra Mussels.

'l1) Unit ¹1 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.

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INSP. BY:

APPENDIX V ANNUAL REPORT: RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 1990

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

TAB (Cont)

APPE E IE APPENDIX A - Radiological Environmental Monitoring.........................................33 Program Summary - 1990 APPENDIX B - Data Tabbbles 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 dU U 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 Quali unity Control Program ................

uaB 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 KD Achieved KDs Typical LLD ..............................,...............................................................63

SUMMARY

INDIANAMICHIGAN 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 RADIOLOGICALSAMPLING STATIONS DISTANCE AND DIRECTION FROM PLANI'XIS Collection Station Distance Direction De rees Envtronmental LD's ONS-1 (A-1) 593 m 184 ONS-2 (A-2) 713 m 480 ONS-3 (A-3) 734 m 90o ONS-4 (A-4) 564 m ONS-5 (A-5) 578 m 118'89'10o ONS-6 (A-6) 584 m ONS-7 (A-7) 641 m 360 ONS-8 (A-8) 613 m 82 ONS-9 (A-9) 417 m ONS-10 (A-10) 424 m 149'27'14 ONS-11 (A-' l) 600 m ONS-12 (A-12) 699 m Ncw Buffalo (NBF) 16.0 ml SSW 63'uarterly Direct RadfaUon/Quarterly South Bend (SBN) 24.0 ml SE Dowaglac (DOW) 26.0 ml ENE Coloma (COL) 20.0 ml NNE lntersecUon of Red Arrow Hwy. 8c Marquette (OFS-1) 3.5 ml NNE Woods Rd, Pole NB294-44 Stevensvlllc SubstaUon (OFS-2) 3.0 ml NNE Pole NB296-13 (OFS-3) 4.0 ml NE Pole NB350-72 (OFS-4) 3.2 ml ENE Intersection of Shawnee & Cleveland. Pole (OFS-5) 3.2 ml ESE

¹B387-32 Snow M.. East of Holden Rd., (0FS-6) 3.5 ml SE NB426-1 Brldgman SubstaUon (OFS-1) 2.0 ml S Callfornla Rd.. Pole NB424-20 (OFS-8) 3.0 ml SSE Rlggles Rd., Pole B369-214 (OFS-9) 3.25 ml E IntersccUon of Red Arrow Hwy., & (OFS-10) 2.6 ml SSW Hildebrant Rd.,Pole NB422-152 Intcrsectlon of Snow Rd. & Baldwin Rd., (OFS-11) 2.8 ml S Pole ¹B423-12

TABL 1 (Cont.)

DONALD C. COO LEAR PLANT- 1990 RADIOLOGIC PLING STATIONS DISTANCE AND DIRECflON FROM PLANT AXIS Collection Station DIstance Direction De reea Air Charcoal ONS-I (A-1) 593 m 18o ONS-2 (A-2) 713 m 48'0O ONS-3 (A-3) 734 m ONS-4 (A-4) 564 m 118O ONS-5 (A-5) 578 m 189o ONS-6 {A-6) 584 m 210o Weekly Gross Beta/Weekly New Buffalo (NBF) 16.0 mi 1-131/Weekly South Bend {SBN) 24.0 ml SE Gamma Isotopic/

Dowaglac (DO%) 26.0 ml ENE Quarterly Composite oo Coloma (COL) 20.0 ml NNE Ground ell Water Onslte (W- I) 600 m 11 Onslte (W-2) 699 m Onslte (W-3) 999 m 63'07'0lo

&Ourn/Quarterly Onsite (W-4) 127 m Gamma Isotopic/Quarterly-Onslte Onslte (W-5)

(W-6) 123 m 129 m 189'uarterly 290'73o 1-131/Quarterly Onslte {W-7) 578 m Non Technical S tion Related%ella Steam Generator Storage Facility (SGRP-1) 1215 m 96o Steam Generator Storage Facility (SGRP-2) 1190 m 93'6o Steam Generator Storage Facility (SGRP-4) 1126 m Quarterly Gross Beta/Quarterly Gross Alpha/Quarterly Steam Generator Storage Faclllty (SGRP-5) 1128 m 94 Gamma Isotopic/Quarterly I-131/Quarterly

TABLE 1 (Cont.)

DONAL9 C. COOK NUCLEAR PLANT- 1990 RADIOLOGICALSAMPLING STATIONS DISTANCE AND DIRECTION FROM PLAÃi'XIS Coliectton Distance IHrection Water St. Joseph Public Intake (STJ) 9.0 mi NE Gmss Beta/14 Day Composite Gamma Isotopic/14 Day Composite 1-131/14 Day Composite Lake Township Public Intake Station (LTD 0,40 ml 'Mtlum/Quarterly Composite 8urface Water Condenser Circulating Water Intake Ll Lake Michigan Shoreline L-2 0.24 ml S Gamma Isotopic/Monthly Lake Michigan Shoreline L-3 0.44 ml N Composltc Lake Michigan Shoreline L-4 0.1 ml SSW Mttum/Quarterly Composite Lake Mlchlgan Shoreline L-5 0.1 ml NNE 1-131/Monthly Composite Lake Michigan Shoreline L-2 0.24 ml S Lake Michigan Shoreline L-3 0.44 ml N Semi-annually Gamma Isotopic/Seml-Lake Michigan Shoreline L-4 0.1 ml SSW Annually Lake Michigan Shoreline I 5 O.l ml NNE Totzke Farm Banda Totzke 4.5 ml ENE Wyant Farm Dowagalc Wyant 18.0 mi E Schuler Farm Baroda Schuler 4.25 mi SE Llvlnghouse Farm La Porte Ltvinghouse 20.0 ml S Once per every Gamma Isotopic/per Sample Warmblen Farm Three Oaks Warmblen 7.8 ml S 14 Days 1-131 per Sample Zelmer Farm Brldgman Zelmer 4.75 ml SSE Lomzack Farm Galien Lozmack 9.0 mi SS

TABLE 1 (Cont.)

DONALD C. COO PLANT- 1990 RADIOLOGICAL LING SI'AEONS DISTANCE AND DIRECHON FROM PLANT AXIS CoHection Distance Direction De es ONS-N .I mi N Semi-annually Gamma Isotopic/

ONS-S .I m1 S Semi-annually OFS-N 3 mi N OFS-S 5 ml S Grapes, Grape Leaves. Offsite Indicator Variable Determined from offsite Grapes, Grape Leaves, Offslte Conbel 20 miles Dose Caicuhtion manual At time of harvest Gamma Isotopic/

~ Broadleaf Vegetation Onsite Variable 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. Ifgross 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 ZO NIEFS A sir, TLDStations L Lake Water Sample Stations ( Intakes) A.~Watervliet M Milk Sample Stations Aisle BENTON HARBOR ~<y~-:

ST. J H,;"'.~:

'ce StevensvI e Eau I Claire DOWAGIAC I

D. C. COOK I'M PLANT Bridgman Ber rien M Springs M /

sect

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MICHIGAN WDIae~

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Nell l.ake Na ter Sample TI,O Statio>>s O>>ly)

Stations Mater, Sediment Sample (l.l is a Lake Mater Station StatioiI~

.'>I:AI.I: SOIII' Non Tcwh Spec Mel Only) 1 Na ter Stations

Figure 3 MAI a

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OPS-1 TLD Stations Within 1-5 Mile Radius OOt R of Plant ops-s OFS-3 m

I I

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III.

SUMMARY

AND DISCUSSION OF 1990 ANALYTICALRESULTS 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 V

25 oO 20 I

E l5 10 0

5 0

03/ 04/ 05/- 06/ 07/ 08/ 09/ pl II 0 II 02l 03/ 04/ 05/ 06/ 07/ 08/ 09/ II P 1/

89 '9 P2/

89 89 89 89 89 89 89 1

89 1

89 12/

89 90 90 90 90 90 90 90 90 90 1

90 pl I 90 12/

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 quarterlry basis 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~ Sk

~ V ~ Ig 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..-

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0 1980 1S81 1982 1983 1984 1985 . 1S86 1987 1988 1989 1990

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ding Graph - 3 1500 1000 500

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r ~ ~ ~ ~ ~ ~ ~ ~

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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 amma ray spectroscopy detected naturally occurring potassium-L5. Gamm 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 RADIOLOGICALENVIRONMENTALMONITORING PROGRAM SMNMARY

RADIOLOGICALENVlRON MONITORING PROGRAM

SUMMARY

INDIANAMICHIGANPONER COMPANY - DO ~ COOK NUCLEAR PLANT DOCKET NO. ~15/

BERRIEN COUNTY JANUARY 1 to DECEMBER 31. 1990 MEDIUM OR PATHWAY 1%7fhL NUMBER CONIROL LOCATION NONROVIINE SAMPLED OF ANALYSES MEAN ta/b) NhME MEhN MEhN REPORIED UNII'F MEASUREMENII PERFORMED RANGE DISHPAN CE AND DIRECIION RANGE RANGE MEASUREMENT hlr Iodine 1-131 520 -(0/312) N/A N/A -(0/208)

(pCl/m3)

Airborne Partlculatce

'ross Beta (Weekly) 510 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)

(1E-03 pCl/m3)

Gatnma 40 Be-7 40 73.3(24/24) SBN 24 mi SE 83.2(4/4) 74.9(16/16)

(40.6-99.6) (52.3-103) (13.3-103)

K-40 40 4.63(2/24) NBF 16.0ml SSW 6.74(1/4) 5.76(2/16)

(3.21-6.04) (4.77-6.74)

Direct Radiation Ganuna 107 (mR/Standard Dose 3.51(91/91) 11 3.8 ml S 4.28(4/4) 3.35(16/16)

Month) Quarterly (2.3-5. 1) (3.6-5. 1) (2.3-4.5) la/b) RaUo of samples with detectable acuvlty to total number ol'samples analyzed.

RADIOLOCIchr. F2AURONMENTALMONITORINa PROGRAM

SUMMARY

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

K-40 65 71.5(2/65)

(66.3-76. 6)

~ 0.33ml SSW 71.5(2/13)

(66.3-76.6)

-(0/0)

H-3 24 254(1 1/20) L-5 0.1 ml NNE 265(4/4) -(0/0)

(170-340) (190-340)

Ground Water Gamma 28 -(0/28) N/A N/A -(0/0)

(pCl/liter)

H-3 28 580(14/28) Well 5 O.l ml WNW 977(3/4) -(0/0)

(120-1700) Onslte (530- 1700)

Drhddng Water Gross Beta 52 4.0(52/52) LVP 0.40 ml S 4.1(26/26) -(0/0)

(pCI/liter) (2.7-10) (2.7-10) 1-131 52 -(0/52) N/A N/A -(0/0)

Gatnma 52 -(0/52) N/A N/A -(0/0)

H-3 250(4/8) STJ 9.0 mt NE 340(l/4) -(0/0)

(190-340)

(a/b) o of samples vrtth detectable acuity to total number of sampl

RADIOLOGICALENVIRONME MONITORING PROGRAM SUMSLRY INDIANAMICHIGANPOWER COMPANY - DO . COOK NUCLEAR PLANT, DOCKET NO. 50-915/

BERHlEN COUNIY JANUARY 1 to DECEMBER 31, 199Q MEDIUM OR PhTHWhY %OTAL NUMBER CONIROL UX'hllON NONROUIINE SAMPLED OF ANALYSES MEAN ta/b) NhME MEhN MEhN REPORTED UNIT OF MEASUREMENT PERFORMED RANGE DISTANCE AND DIRECfION RANGE RANGE MEASUREMFNT:

Sediment Gatmna 8 (pCl/kg wet)

K4Q 8 5985(8/8) L-5 6380(4/4) No Contxol (4930-7250) 0.35 ml NNE (5700-7060)

Cs-137 8 25. 1(3/8) L-5 30. 1(1/2) No Control (18.5-30.1) 0.35 ml NNE Th-228 8 126(8/8) L-4 135(2/2) No Control (70.9-171) 0.33mi SSN (116-154)

Mlle Gamma 175 (pCI/liter)

K-40 175 1302(125/125) Shuler 1376(25/25) 1293(50/50)

(922-1950) 4.25 mt SE (922- 1950) (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.

RADIOLOGICALENVIRONMENTALMONITOIUNG PROGRAM

SUMMARY

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

Phh (pCl/kg wet)

K-40 2636(8/8) OFS4outh 3575(2/2) -(0/0)

(684-3840) Sml N (3310-3840)

Cs-137 37.8(6/8) OFS-North 80. 1(1/1) -(0/0)

(20.3-80. 1) 3ml N Pood/Vcgetathm Gamma (pCl/kg wet)

Be-7 1650(3/5) Sector H 2700(1/2) -(0/0)

(1060-2700) Variable K-40 2402(5/5) Sector E 2830(2/2) -(0/0)

(889-3700) Variable (2300-3360)

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

APPENDIX B DATATABLES 38

TABLE B-1 INDIANAMICHIGANPOWER 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 STA'GON CODES COLUEIION h-1 h4 h4 h-5 h4 Cobma Daaaghc Neo Buf South Bend hverage DATES k2 e.d.

01/08/90 28t 2 30%2 2912 29t 2 28k 2 27k 2 28%2 29%2 36t 2 35k 2 30% 6 01/15/90 25k 2 26%2 23%2 26k 2 26k 2 24k 2 24t2 24%2 20% 2 22k 2 24k 4 01/22/90 16+ 2 17+2 19t2 16t2 1842 18+ 2 19% 2 17t 18+ 2 2 16% 2 20% 2 18%2 20%2 18t2 20%2 2li 2 20 k 2 l8% 2 18% 3 01(29(90 19% 2 17% 2 19% 2 M 02/05/90 18% 2 17t2 1312 16% 2 15% 2 172 2 18%2 1722 15% 2 17% 2 16t 3 02/12/90 15m 2 1612 15%2 15m 2 15m 2 15m 2 16%2 1512 23k 2 161 2 16% 5 02/19/90 18% 2 1712 19%2 19% 2 18% 2 20%.2 l922 19%2 22k 2 2IR 2 191 3 02/26/90 17' 1712 17%2 162 2 17% 2 182 2 1722 16%2 21% 2 l8% 2 171 3 03/05/90 21% 2 18%2 20%2 20% 2 19% 2 22k 2 20%2 22%2 23k 2 23k 2 21% 3 03/12/90 17% 2 13%2 14%2 14% 2 13% 2 15t 2 14%2 14%2 16% 2 l6% 2 15% 3 03/19/90 12% 2 12%2 13%2 12% 2 13t 2 14% 2 1222 12%2 12t 2 l5% 2 13' l7% 2 18t 17' 03/26/90 04/02/90 19% 2 9k 1 19%2 10% 1 18%2 11%2 IO+ 1 10t 2

1 19% 2 12% 2 18%2 ll k2 18%2 1022 18m 2 11% 2 12% 2 lit 18% 2 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 {~)

INDIANAMICHIGANPOWER - 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 Sl'ATlON CODES COLXZCTION h-1 h-5 hA Colo ena Dawagtac Neer BuE South Send hverage DATES k 2 s.d.

04/09/90 16% 2 16%2 14%2 16% 2 15+ 2 18% 2 14+2 15+ 2 15% 2 162 2 16t 2 04/16/90 18+ 2 15%2 8%2 15% 2 16% 2 17m 2 16 4 2 16 2 2 17t 2 17m 2 16% 6 04/23/90 (a) 04/30/90 16+ 2 16%2 14%2 14% 2 15t 2 16t 2 17%2 15%2 18% 2 172 2 16+ 3 05/07/90 151 2 17% 2 14 k2 16% 2 15% 2 14% 2 13%2 16 2 2 15% 2 15% 2 161 2 05/14/90 14m 2 14%2 15%2 ]3+2 8a 1 13% 2 13%2 14t 2 15+ 2 142 2 13' 05/21/90 OS/28/90 6t at 2

2 Sx2 9i2 6a2 622 6i 9k 2

2 6k 9i 2

2 St 2 9k 2 10+2 10t2 8%2 10 2 2 llk 10t 2 2 10+ 2 10% 2 7+5 9X 3 06/04/90 9k 2 10%2 10+2 8% 2 9a2 9k =2 9%2 9%2 12' 12% 2 10k. 3 06/11/9Q 06/18/90 10% 2 19% 2 11%2 16%2 10%2 16%2 9i 17% 2 2 lie 18% 2 2 10  % 2 7k 2 11 t2 15%2 12+ 2 15+2 11% 2 19+ 2 12t 2 ll a 2 16w 2 16% 7 06/25/90 07/02/90 6i 14% 2 2 9%2 17%2 7%2 17%2 9t 17% 2 2 8t 16+ 2 2 12 2 2 18% 2 10 k 2 18%2 8+2 16 + 2 11+ 2 15+ 2 9t2 19' 9k 4 17% 3 Qus~hvg. 1$ % 9 18k.8 11%8 12% 8 1%X 8 12% 9 1St 8 1st 6 14% 8 14% 7 -18% 2 X 2 Sigma la) Samples inadvertently lost at the laboratory

TABLE B-1 (cont.)

INDIANAMICHIGANPO%ER COMPANY - DONALD C. COOK NUCLEAR PLANT CONCENNA'IIONS OF GROSS BETA EMITIERS IN WEEKLYAIRBORNE PARIICULATES Results In Untts of 10 3 pCI/m3 2 2 sfgma SI'A'GON CODES COLUM h-1 h4 h-5 A4 Coloma Dawaghc Ne'er Buff South Bend hverago DATES R 2 s.d.

0?/09/90 14% 2 15%2 14%2 l2% 2 13% 2 152 2 13%2 16%2 16% 2 16a 2 14+ 3 07/16/90 07/23/90 13% 2 14% 2 13%2 16%2 15%2 16+2 12% 2 13+ 2 ilk 17% 2 2 l3i 2 13% 2 13%2 14+2 13%2 12%2 13% 2 17% 2 15m 2 17% 2 13+ 2 15+ 4 07/30/90 15+ 2 15%2 17%2 18% 2 14% 2 17% 2 17%2 16+2 21+ 2 18% 2 17% 4 08/06/90 0&/13/90 16' 15% 2 10 + 2 15% 2 11+2 16% 2 lp+

15%

2 2

12+ 2 15% 2 lit 2 l2% 2 1012 17%2 13+2 1322 19% 3 18% 2 13% 2-16% 2 13+ 6 15% 4 08/20/90 14% 2 14%2 14 ll t2 15' ll k 15k 2 132 2 16%2 (a) 1622 16+ 2 17% 2 15% 3 08/27/90 12% 2 27*

9k2 28a2 k2 2 8% 2 9k 2 11%2 611 12% 2 l3% 2 lpt 4 09/03/90 2 27 k 2 26a 2 30% 2 26% 2 26%2 2522 27k 2 27k 2 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 t2 19m 2 19+2 21X2 23+ 2 311 3 . 221 7 a 2 Stgma let 9 1st 10 16a9 16+ 11 16% 11 15+ 10 16%9 15X lp 1st 9 18+ ll 16% 2 (a) Vo ge.

T S-1 (~.)

lNDIANAMICHIGANPOWER - 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 STATION CODES COLU~CTION DhTES h-1 h2 h-5 h4 Cobma Dcwsgfac New Std'outh Send hvexage R2 s.d.

10/08/90 16% 2 17%2 17%2 16% 2 16% 2 16+ 2 17~2 15+2 16% 2 17% 2 16% 1 10/15/90 10/22/90 112 2 16% 2 10%2 23+2 11%2 17%2 14 k 2 18% 2 12%

18%

2 2

llk 2 13% 2 1222 17 t2 11%2 16%2 12% 2 19% 2 13% 3 172 2 12% 2 17' 10/29/90 18+ 2 16%2 18%2 18t 2 19% 2 17% 2 19+ 2 17% 2 18+ 2 17% 2 )8a 2 ll/05/90 27k 2 28k 2 27%2 28% 2 29% 2 26k 2 28%2 31%5 21% 2 29k 2 27' l l/12/90 18a 2 23 f2 25a2 24k 2 23k 2 20% 2 23%2 29%3 27k 2 25k 2 24' l l/ l9/90 29' 29 f2 26a2 30' 3lt 2 26% 2 26%2 26%2 28* 2 26k 2 28+ 4 1 l/26/90 30m 2 29 X 2 2812 28m 2 27k 2 27k 2 27%2 2922 28% 2 24k 2 28% 3 12/03/90 18' 19a2 20+2 20+ 2 17% 2 17% 2 20a2 21%2 21% 2 21% 2 19% 3 12/10/90 23k 2 24 k 2 26 k 2 25k 2 23k 2 23k 2 23%2 23%2 23k 2 22k 2 24k 2 12/17/90 12/24/90 21% 2 30% 2 23 k 2 29 X 2 24 k 2 27 k 2 23k 2 28% 2 22% 2 31% 2 23k 2 28% 2 20 R 2 27 2 2 2312 28+2 4.8% 1.2 302 2 22k 2?k 2

2 21%

29% 3 ll 12/31/90 24k 2 28% 2 27%2 24k 2 24k 2 24k 2 19 4 2 9801 0.08(a] 26 k 2 16% 4 24% 8 Quarter hmage 22 L 2 s.d.

i 12 23% 12 2SR 11 23% 10 22k 12 21% 11 21 k 10 22% 1S 21% 14 21% 10 22k 2 Annual hverage 17% 12 k 2 s.d.

17% 12 174 12 17% 12 17% 1$ lVE ll 17% 10 17% 12 18 k 12 18 k 11 1VR 1 (a) Low sample volume; not Included In averages. Fttter ltght tn dtspoettton.

TABLEB-2 INDIANhMICHIGANPOWER 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 Second Quarter Third Quarter Fourth Quarter hvexage 01 1 04/er/oooo /90 Or 02/00-10/01 10 01/00.1Q/Si/90 12 ad.

h-1 Be-7 K-40 82.2

<3 t 8.2 97.0 k 9.7

<6 60.8+ 5.1

<4 68.2 k 7.0

<5 74.6 2 39.4 Cs-134 < 0.2 < 0.2 < 0.1 < 0.3 Cs-137 < 0.2 < 0.3 < 0.2 < 0.3 h4 Be-7 80.1 R 8.0 99.6k 10.0 49.3 a 4.9 81.2% 8.1 77.6 a 41.7 K-40 <4 <5 <<6 <6 Cs-134 < 0.2 < 0.2 < 0.2 < 0.3 Cs-137 < 0,2 < 0.3 < 0.3 < 0.3 h-3 Be-7 K-40

?2.4 2 7.2

<4 73.1 k 7.3

<6 43.4 k 4.3

< 10 76.7k 7.7

< 7 66.4 t 30.9 Cs-134 < 0.2 < 0.4 < 0.3 < 0.3 Cs-137 < 0.2 < 0.3 < 0.3 < 0.3 Be-7 85.3+ 8.6 85.3% 8.5 49.6i 6.0 79.52 7.9 74.9 2 34.2 K-40 <3 <7 <6 <4 Cs-134 < Q.l < 0.3 < 0.2 < 0.2 Cs-137 < 0.1 < Q.3 < 0.2 < 0.2 h-5 Be-7 77.0% 7.7 94.0% 9.4 40.62 4.1 96.2 4 9.6 77.0 2 51.4 K-40 . <3 6.04 k 2.19 <9 < 10 6.04 k. 2.19 Cs-134 < 0.2 < 0.2 < 0.3 < 0.4 Cs-137 < 0.2 < 0.2, < 0.3 < 0.4

~

7ypl LLDs are found tn Table B-12.

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

'Fypical LLDs are found in Table B-12.

INDIANAMICHIGANPOWER 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 STA'IION CODES COLLRCT105 h-1 h-5 hA CoIacaa Dowaghc New Bufmalo South DATES Bc'1(08/90

< < 20 < 20 < 10 < '

< 20 2Q < 10 10 < 10 < 10 10 01/15/90 < 20 < 20 < 2Q < 20 < 10 < 10 < 20 < 20 < 10 < 20 01/22/90 < 20 < 20 < 20 < 20 < 1Q < 20 < 10 < 10 < 10 < 10 01/29/90 < 20 < 20 < 20 <20 < 10 < 20 < 20 < 20 < 10 < 20 02/05/90 < 20 < 20 < 20 < 20 < 10 < 20 < 20 < 20 < 10 < 20 02/12/90 < -20 < 20 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 02/19/9Q < 10 < 10 < 10 < 10 < 10 < 20 < 20 < 20 . <.10 < 20 02/26/90 < 10 < 10 < 1Q < 10 < 10 < 10 < 10 < 10 < 10 < 10 03/05/90 < 20 < 20 < 20 < 20 < 10 < 20 < 20 < 20 < 20 < 10 03/12/90 < 10 < 10 <<10 < 10 < 10 < 20 < 20 < 20 < 10 < 20 03/19/90 < 20 < 20 <20 < 20 < 10 < 10 < 10 < 10 <e < 10 03/26/90 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 04(02/90 < 20 < 20 < 20 <20 < 10 <20 < 20 < 20 < 10 < 20

~(cant.}

INDIANhMICHIQANPOWER 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 STATION CODES COIN%'IION h-1 h-5 Cehxaa Dowaghe New ButMo South Bend DhTES 04(09/90 < 20 < 20 < 20 < 20 < 10 < 10 < 10 < 10 <<10 < 10 04(16/90 < 20 <2Q < 20 c 20 < 10 < 20 < 20 < 20 < 10 < 20 Q4/23/9Q < 20 < 20 <20 < 20 < 10 < 20 < 20 < 20 c 10 < 20 04/30/90 <9 < 10 c 10 < 10 < 10 c 10 < 20 < 20 < 20 < 20 05/07/90 < 20 < 20 < 20 < 20 < 10 < 20 < 2Q < 20 < 20 < 20 05/14/90 < 20 < 20 < 20 < 20 < 10 < 10 < 10 < 10 <<9 < 10 o 05/21/90 <<10 < 10 c 10 < 10 < 10 < 2Q < 30 < 20 < 10 < 20 05/28/90 < 20 c 10 < 10 < 10 < 10 ( 20 c 20 < 20 < 20 < 20 06(04/90 < 20 < 20 < 20 < 20 c 10 < 20 < 20 < 20 < 10 < 20 Q6/1 I/9Q < 20 < 20 < 20 < 20 < 10 <20 < 20 < 20 c 10 < 20 06/18/90 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 06/25/90 < 20 < 20 < 20 < 20 <<10 < 20 < 20 < 20 < 10 < 20 07/02/90 < 10 c 10 c 10 < 10 c 10 < 20 < 20 < 20 < 10 < 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 STh1ION CODES COLLECTION h-1 h-d h4 Coiama Dowagac New BufKalo South Sead DhTES 07/09/90 < 20 < 20 < 20 < 20 < 10 < 20 < 20 ( 20 < 10

'<6

< 20 07/16/90 < 10 < 10 < 10 < 10 <7 <7 <7 <7 <7 07/23/90 < 20 < 20 < 20 < 20 < 10 < 10 < 10 < 10 < 10 < 10 07/30/90 < 20 < 20 < 20 < 20 < 10 < 20 < 20 < 20 < 10 < 20

~UiJJS 08/06/90 < 20 ( 20 (20 <20 ( 10 < 10 < 10 < 10 < 20 < 10 08/13/90 < 10 <<10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 08/20/90 <<20 < 20 < 20 < 20 < 10 < 10 < 20 < 10 < 10 < 10 08/27/90 <<20 < 20 < 20 < 20 < 10 < 10 < 10 < 10 -<10 < 10 09/03/90 < 10 < 10 < 10 < 10 <8 < 20 < 20 < 20 < 10 < 20 09/10/90 < 20 < 2Q < 2Q < 20 < 10 < 20 < 20 < 20 < 10 < 20 09/17(90 < 20 < 2Q < 20 < 20 < 10 <20 < 20 < 20 < 20 < 20 09/24/90 <60 <60 < 60 < 60 < 50 < 20 < 20 < 20 < 10 < 20 10/01/90 < 20 < 20 < 20 < 20 < 10 < 20 < 20 < 20 < 20 < 20

~ (Ccat.)

INDlhNAMICHIQANPOWER - 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 Sl'A'IION CODES COLLECTION A1 h-I h4 Coiaua Dowagfac New Buffo 8oaQa Bead DATES E 10/08/90 < 20 <20 <20 < 20 < 10 c 10 < 1Q < 10 < 10 < 10 10/15/90 < 20 <30 <20 < 20 < 1Q ( 20 < 20 < 20 < 20 <20 10/22/90 < 20 <80(a) <2Q < 20 < 10 c 20 < 20 <<20 < 10 < 20 10/29/90 c 10 <2Q < 10 < 10 < 10 <20 < 20 < 20 < 10- < 20 ll/05/90 < 20 < 20 (20 < 20 < 10 < 10 < 10 < 30 <7 < 10 ll/12/90 < 20 < 20 < 20 < 20 < 10 c 20 < 20 < 20 < 20 < 20 ll/19/90 < 20 < 20 < 20 < 10 < 10 < 10 < 10 <<10 < 7 < 10 ll/26/90 < 30 c 30 c 30 c 30 < 20 c 10 < 10 < 10 < 10 < 10 12/03/90 < 10 < 10 c 10 c 10 < 10 < 10 < 10 < 10 < 10 < 10 12/10/90 < 20 < 20 < 20 < 20 c 10 < 20 < 20 < 20 < 10 < 20 12/17/9Q < 20 < 20 < 20 < 20 < 10 -<20 c 20 < 20 < 10 < 20 12/24/90 < 20 < 20 < 20 < 20 c 10 c 10 < 20 < 20 < 20 < 20 12/31/90 <20 < 20 < 20 < 20 < 10 < 20 < 20 < 600 {b) < 10 < 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 INDIANAMICHIGANPOWER COMPANY - DONALD C. COOK NUCIZAR MEASUREMENTS - QUARIKRLYTIN RESUL'IS PLANK'IRECT 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 i hVERAGE 2 s.d.

A-1 3.3k 0.2 3.2 t 0.1 3.8i 0.1 2.5i 0.3 3.2 i 1.1 A-2 3.6i 0.3 3.2i 0.2 4.0* 0.3 2.8+ 0.3 3.4 i 1.0 A-3 3.6i 0.3 3.3 i 0.1 3.7i 0.2 2.8i 0.2 3.4 i 0.8 A-4 3.3% 0.3 2.9 + 0.2 3.6i 0.2 2.3i 0.2 3.0 i 1.1 A-5 3.4 i 0.4 3.1 i 0.1 i 3.8 0.1 2.5% 0.3 3.2 t 1. 1 A-6 3.3A 0.3 3.0i O.l 3.5 k 0.2 2.4 A 0.2 3.1 t 1.0 A-7 3.6% 0.1 3.3i 0.1 3.8 S 0.2 i 2.7 0.4 3.4 1.0 i

A-8 3.4 % 0.2 3.2t 0.1 3.9 0.2 i 2.6 0.4 3.3+ 1.1 A-9 t 3.8 0.3 3.6i 0.2 4.1i 0.4 i 2.8 0.4 3.6 i 1.1 A-10 3.3i 0.2  ? Sk 0.1 i 3.7 0.3 2.5i 0.3 3.1 k 1.1 A-11 2.8 I 0.3 3.4 x 0.1 t 4.2 0.5 2.8% 0.3 3.3i 1.3 A-12 3.8 i 0.2 3.6 i 0.3 i 4.1 0.4 2.9k 0.2 i 3.6 1.0 OFS-1 3.5 i i

0.4 3.2 i 0.2 i

i 3.9 0.2 t

2.7i 0.5 i 3.3 1.0 OFS-2 3.6 0.2 3.4 0.1 4.1 0.3 2.8 + 0.3 t 3.5 1.1 OFS-3 3.7 R 0.2 3.6 i 0.2 4.3i 0.4 i 3.3 0.7 i 3.7 0.8 OFS-4 4.0i 0.3 3.7 i 0.3 4.6i 0.2 t 3.1 0.4 i 3.9 1.2 OFS-5 t 3.8 0.3 3.6i 0.3 4.6R 0.3 i 3.0 0.4 i 3.7 1.2 OF$ 4 3.8% 0.2 (a) 5.1 i 0.4 3.8 R 0.5 t 4.2 1,6 OFS-7 3.5 i 0.1 3.3k 0.1 t 4.1 0.3 t 2.8 0.5 3.4 L 1.1 OFS-8 4.6i 0.4 4.1 i 0.3 t 4.9 0.3 3.6i 0.5 i 4.3 1.1 OFS-9 4.04 0.1 3.9 i 0.2 4.3 a 0.3 i 3.2 0.4 3.9 k 0.9 OFS-10 3.5i 0.2 3.5 i 0.2 t 4.1 0.3 t 2.6 0.4 i 3.4 1.2 OFS-11 4,4k 0.3 4.0i 0.4 5.1 X 0.4 i 3.6 0.4 i 4.3 1.3 NBF 39i 03 3.5i 0.4 4.2k 0.3 3.0

• 0.3 i 3.7 1.0 SBN 3.6i 0,2 3.51 0.2 4.6i 0.4 i 3.2 0.4 3.? k 1.1 DOW 3.1i 0.1 2.9i 0.1 i 3.7 0.2 2.4 A 0.2 3.0% 1.1 COL 3.2k 0.2 2.9i 0.1 i 3.7 0.2 i 2.3 0.2 3.0 X 1.2 hverago i 2 s.d. 0.7 $ .4i 0.7 4.1% 0.9 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 INDIANAMCHIGANPOWER hNV - DONhLD C. COOK NUCLEAR PLANT OF 1ODINE. 'IRfBUM AND GAMMA EMTIKRS'N SURFACE WATER -'ONCENIRA11ONS Results tn Units of pCl/liter k 2 signa STATION 1-1$ 1 Ll Ol/ll/90 < 0.9 < 60 (Condenser Circ.) 02/08/90 < 0.3 <60 03/08/90 < 0.3 < 60 < 100 04/05/9Q < 0.2 < 40 05/03/90 < 0.2= < 70 < 100 05/31/90 <<0.3 < 80 06/28/90 < 0.3 <40 07/20/90 < 0.1 < 50 ( 100 08/23/90 < Q.2 < 50 Q9/2Q/90 < 0.2 < 60 10/18/90 < 0.2 < 50 ll/16/90 < 0.2 <<50 12/13/90 < 0.2 < 100 < 200 I 2 Ol/ll/90 (a)

(South Comp) 02/08/90 < 0.3 <80 03/08/90 < 0.2 < 90 < 100 04/05/90 < 0.2 < 40 05/03/90 < 0.4 < 90 170 % 6Q 05/31/90 < 0.6 < 50 06/28/90 < 0.2 < 200 07/26/90 < 0.1 < 60 300 k 70 08/23/9Q < 0.3 < 60 09/20/90 < 0.2 < 50 10/18/90 < 0.2 < 50 ll/16/90 < 0.3 < 90 12/13/90 < 0.1 <40 << 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 INDIANAMICHIGANPOWER COMPhNY - DONhLD C. COOK NUCLEAR PLANT CONCERIRATIONS OF IODINE. 'IBlTIUMAND (dLMMA EMITIERS'N SURFACE WATER Results ln Units of pCl/ltter

• 2 stgma STATION K-40 IrS 01/ll/90 (a)

(North Comp) 02/08/90 < 0.2 < 70 03/08/90 < 0.3 ( 60 22Q k 80 04/05/90 ( 0.2 < 70 05/03/90 < 0.2 < 50 170 2 60 05/31/90 < 0.3 <40 06/28/90 < 0.2 < 50 07/28/90 < 0.2 < 100 320 k 100 08/23/90 < 0.1 <<50 09/20/90 ( 0.2 < 70 10/18/90 < 0.2 <<100 il/15/90 ( 0.2 < 100 12/13/90 < 0.2 <40 24Q % 80 Ql/11/90 (a)

(South 600) 02/08/90 < 0.3 < 100 03/08/90 << 0.3 76.6 a 30.1 23Q 4 8Q 04/05/90 < 0.2 < 60 05/03/90 < 0.2 <<100 250 a 100 05/31/90 < 0.3 < 60 06/28/90 < 0.2 <40 07/28/90 < 0.1 66.3 k 25.6 190 % 100 08/23/90 < 0.2 < 100 09/20/90. < 0.2 < 100 10/18/90 ( 0.2 < 50 11/16/90 , <03 < 60 12/13/90 < 0.1 < 60 < 200 Typical 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 INDIANAMICHIQANPOWER hNY - DONhLD C. COOK NUCLEAR OF IODINE, TRITIUM AND GAMMA EMITIKRS'N SURFACE WATER I%AÃI'ONCENIRA'GONS Results ln Units of pCl/liter k 2 sigma STATION LS 01/ll/90 (a)

(North 500) 02/08/90 < 0.3 < 60 03(08/90 < Q.S <90 230 4 80 04/Q5/90 < 0.2 < 70 05/03/90 < 0.2 < 100 300 k 90 05/31/90 << 0.4 < 50 06/26/90 < 0.3 < 70 07/26/90 < 0.1 < 50 190 k 100 08/23/90 < 0.2 < 80 09/20/90 < 0.2 < 60 10/18/90 < 0.2 < 50 ll/15/90 < 0.3 < 50 12/13/90 < 0.2 < 1QQ 340 a 90 7yptcal LLDs are found ln Table B-12.

(a) Sample not avaihbte due to ice on the shoreline.

TABLE B 6 INDIANhMICHIGANPOWER COMPANY - DONhLB C. COOK NUCLEAR PLANT CONCENIRATIONS OF TRGIUM AND GAMMAEMTIKRS'N QUARTERLY GROUND WATER Results in Units of pCI/liter k 2 slgrna SThTION Collection Date I-181 Gama' Well - 1 02/03/90 < O.l < LLD < 100 Rosemary Beach 05/06/90 < 0.1 < LLD < 200 08/05/90 < O.l < LLD < 200 ll/03/90 < 0.1 < LLD 230 2 80 Well -2 Q2/Q3/90 < 0.2 < LLD 130 a 80

'Ihclnlng Center 05/06/90 < 0.2 < LLD < 200 08/05/90 < O.l < LLD < 200 11/03/90 < O.l < LLD < 90 Well - S 02/03/90 < 0.2 < LLD < 200 Flrearnrs Range 05/06/90 < Q.l < LLD < 200 08(05(90 ll/03/9Q 0.2 0.1

< LLD

< LLD 170 t

<90 100 Well - 4 02/04/90 < 0.2 < LLD 1450 2 500 Onslte 05/06/90 < 0.2 < LLD 320 R 100 08/05/90 < O.l < ILD < 1000 11/04/90 < O.l < ILD 810  % 80 Well - d 02/04/90 < 0.2 < ILD 1700 R 500 Onslte 05(06/90 < 0.1 < ILD 700 R 100 08(05/90 < 0.1 < LLD < 1000 11/04/90 < 0.1 < LLD 530 2 80 WeII - 6 02/04/90 < 0.2 < ILD 1300 k 500 Onslte 05/06/90 < 0.3 < ILD 260 k 100 08/05/90 < O.l < ILD < 1000 11/04/90 < O.l < LLD 190 k 1QO Well - 7 02/03/90 < 0.2 < LLD 210 R 90 Qvingston Beach 05/06/90 <0,2 < LLD < 200 08/05/90 <O,l < LLD < 200 ll/03/90 <0,1 < LLD 120 k 60 hvaage d80% 1078 t 2 a.d.

'Pyplcal LLDs are found ln Table B-12.

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

2s. d.

7yplcat LLDs are found ln table 8-12.

TABID B-7 tcont.)

INDIANAMICHIGANPOWER COMPANY - DONALD C. COOK NUCLEAR PLANT CONCENTRATlONS OF GROSS BETA. 1ODINE. 'IMIIUMAND GAMMAEMITIERS'N DRlNKlNG WA'IER Results ln Untts of pCt/ltter 2 2 stgma COLUKTIONBATE Gamma 8 ItxQne-131 Ol/11/90 4.4i 1.2 < LLD < 0.3 < 200 Ol(25/90 4.1% 1.0 < LLD < 0.3 02/08/90 2.8k 1.0 < LLD < 0.3 02/22(90 4.6k 1.6 < LLD < O.l 03/08/90 6.1+ 1.2 < LLD < 0.3 03/22/90 4.7% 1.1 < LLD << O.l 04/05/90 4.3R 1.0 < LLD < 0.2 340 ~ 80 04/19/90 3.6R 1.0 <<LLD < 0.4 05/03/90 3.2% 1.0 < LLD < 0.2 05/17/90 3.2+ 1.0 < LLD ( 0.3 05/31/90 3.7 t 1.0 < LLD < 0.3 06/l4/90 3.2 R 1.0 <<LLD < 0.4 06/28/90 2.8 i 1.0 <<LLD < 0.3 < 100 07/12/90 3.2 a 0.9 <<LLD < 0.3 07/26/90 3.8 a 1.0 < LLD < 0.2 08/09/90 3.1 a 1.1 < LLD < 0.3 08/23/90 3.9 a 1.0 < LLD < 0.3 09/06/90 3.1 k 0.9 < LLD < 0.1 09/20/90 4.1 4 1.0 < LLD < 0.4 10/04/90 4.6i 1.0 < LLD << 0.3 10/18/90 3.6 i 1.0 < LLD < 0.3 11/Ol/90 4.1 4 1.1 < LLD ( 0.2 ll/16/90 4.3 a 1.0 < LLD << 0.5 ll/29/90 4.2 R 1.0 <<LLD < 0.3 12/13/90 4.6-a 1.1 < LLD < 0.3 12/27(90 5.1 x 1.1 < LLD < 0.4 Average k $ .9+ lJS 2a. d.

T INDIANAMICHIGANPOWER 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 05/15/90 < 300 6260 k 630 < 20 < 300 101 X 27 L-3 05/15/90 < 300 7250 a 730 ( 20 < 300 171 2 26 05/15/90 < 100 6000 ~ 600- 26.7 R 9.9 ( 200 154 R 20 L-5 05/15/90 < 200 7060 k 710 30.1 2 11.8 < 300 147'5 11/15/90 << 100 4930 k 490 < 20 < 200 144 k 14 L-3 11/15/90 < 100 5440 k 540 ( 20 ( 200 70.9 k 9.9 L-4 ll/15/90 < 100 5240 2 520 18.5 k 10.4 ( 200 116 k 19 L.5 11/15/90 < 200 5700 k 570 < 20 ( 300 108 2 13 i

Average 2 a.d.

8988% 1670 28.1 t 11.9 126% BB lppical I.I.Ds are found ln table 0-12.

TABLEB-9 INIHANAMCHIGANPOWER COMPhNY - DONhLD C. COOK NUCLEAR PLANT CONCENTRAGONS OF IODINE AND GAMMA EMITIERS'N M)LK Results ln Units of pCl/liter k 2 sigma STATION CODES COLLISION ANALYSIS SHULER IlMEhCK WARlHBIEN ZELMER MUNG HS DATES Ol/12/90 K-40 1-131 1310 k 130

< 0.3 1240 k 120

< 0.2 1270 k 130

< 0.2 1150 k 120

( 0.2 1260 k 130

< 0.2 1140 t

< 0.2 110 1200 k 120

< 0.2 01/26/90 K-40 1600 k 160 '1290 k 130 1060 k 110 1360 2 140 1350 k 130 1300 k 130 1370 2 140 1-131 < 0.1 < O.l < 0.2 < O.l ( 0.2 < 0.2 < O.l 02/09/90 K-40 I-131 1260 k 130

< 0.2 1200 k 120

< 0.2 1320 k 130

<< O.l 1180 k 120

< 0.2 1690 t

< 0,3 170 1260 2 130

< O.l 126Q a 130

( 0.1 02/23/90 K-40 1260 2 130 1290 k 130 (a) 1350 k 130 1320 R 130 1050 k 110 131Q k 130 1340 4 130 1-131 < 0.2 < 0.2 < 0.2 < 0.2 ( 0.2 < 0.1 < O.l 03/09/90 K-40 1360 k 140 1370 k 140lb) 1340 k 130 1350 k 140 1240 k 12Q 1380 4 140 1180 k 120 1-131 < 0.2 < 0.1 < O.e < 0.2 < 0.2 < 0.1 < 0.2 03/23/90 K-40 1250 k 120 1200 k 120 1300 a 130 137Q k 140 1390 k 140 1280 k 130 1420 + 140 I-131 < 0.2 < 0.1 < 0.2 < O.l ( 0.2 < 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 llected 2/25/90.

lb) No available at co))ection; make-up sample collected 03/11/90.

B-9 (cont.)

INDIANAMICHIGANPOWER CO - DONALD C. COOK NUCLEAR PLANT CONCENTRATIONS OF IODINE AND GAMMA EMITIERS'N MILK Results in Units of pCl/liter t 2 sigma STATION CODES COLLECMON ANALYSIS SHULER LOZMACK PFARMBIEN ZELMER LIVINGHS DATES 04/06/90 K-40 1-131 1690 t

<<0.1 170 1250 k 120

< 0.1 1280 k 130

< 0.2 1240 k 120

( 0.2 1300 + 130

< 0.2 1260 k 130

< 0.1 1400 2 140

< 0.2 04/20/90 K-40 1400 k 140 1090 k 110 1160 4 120 1360 2 140 1150 2 110 1240 2 120 1290 k 130 1-131 < 0.3 < 0.3 < 0.3 < 0.2 < 0.2 < 0.3 < 0.2 05/04/90 K-40 1350 t 140 1320* 130 1240 k 120 1380 k 140 1440 k 140 1270 2 130 1250 2 130 I-131 < 0.1 < 0.1 ( 0.2 < 0.2 < 0.2 < 0.2 < 0.3 05/18/90 K-40 989 2 99 1420 k 140 1240 k 12Q 126Q k 130 1400 k 140 1190 2 120 1180 k 120 I-131 ( 0.2 < 0.2 < 0.3 < 0.3 ( 0.2 < 0.2 ( 0.1 06/01/90 K-40 922 k 92 1080 k 110 1360 k 140 1260 2 130 1310 k 130 1260 2 130 1280 k 130 1-131 < 0.3 < 0.3 < 0.2 ( 0.2 < 0.2 ( 0.3 ( 0.3 06/15/90 K-40 1-131 1420 a 140

< 0.3 1360 2 140

( 0.2 1310 k 130

( 0.2 1290

(

t 0.2 130 1160 k 12Q

< 0.2 1290 k 130

( 0.2 1250 k 120

< 0.2 06/29/90 K-40 1-131 1280 i

< 0.2 130 1320 k 130

< 0.2 1300 t

( 0.2 130 1230 k 120

< 0.3 1450 k 140

( 0.2 1190 k 12Q

< 0.2 1240 2 120

( 0.2

'Ippleal LLDs are found in table 8- l2. All other gamnta einltters were <LLD.

TABLE B-9 ICont.)

INDIANAMICHIGANPOWER COMPANY - DONALD C. COOK NUCLEAR PLANT CONCENTRATIONS OF IODINE AND GAMMA EMITTERS'N MILK Results In Units of pCI/liter i 2 sigma STATION CODES COLLF~ON ANALYSIS 8HULER LO2MACK WARMBIEN ZELMER LIVINGHS DATES 07/13/90 K-40 1-131 1400 f

< 0.2 140 1520 2 150

< 0.2 1270 k 130

< 0.1 1370 k 140

< O.l 1300 k 130

< 0.2 1280 k 130

< 0.2 1260 2 130

< 0.3 07/27/90 K-40 1-131 1230 i 120

< O.l 1340 2 130

< 0.2 1410 k 140

< 0.1 1300 k 130

< 0.2 1440 4 140

< 0.2 1490 k 150

< 0.1 1170 k 120

< 0.2 08/10/90 K-40 1-131 1130 k 130

< 0.3 1380 k 140

< 0.3 1420 4 140

< 0.2 1320 *

< 0.2 130 1320 k 130

< 0.3 1300 t

< 0.2 130 1260 2 130

< 0.2 08/24/90 K-40 1390 a 140 1360 k 140 1400 k 14Q 1030 4 100 1110 k 110 1340 k 130 1360 2 140 1-131 < 0.4 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 09/07/90 K-40 1390 R 140 1350 2 140 1270 R 130 1310 R 130 1260 R 130 1350 R 14Q 1070 X 110 1-131 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 09/21/90 K-4Q 1950 4 190 1440 k 140 1360 k 140 1180 2 120 1370 2 140 1450 k 150 1240 k 120 I-131 < 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.)

INDIANAMICHIGANPOWER CO - DONALD C. COOK NUCLEAR PLANT CONCENTRATIONS OF IODINE AND GAMMA EMITIERS'N MILK Results In Units of pCI(liter k 2 sigma STATION CODES COLLF~ON ANALYSIS SHULER LOZMACK NARMBIEN ZELMER LXVING HS DATES 10/05/90 K-40 1200 k 120 1400 k 140 1390 k 140 1480 2 150 1190 k 120 1390 2 140 1310 2 130 I-131 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 < 0.2 K-40 1430 k 140 '

10/19/90 1060 k 110 1390 k 140 1310 2 130 1580 4 160 1340 k 130 1290 k 130 1-131 < 0.2 < 0.2 = < 0.2 < 0.2 0.1 < 0.2 < 0.2 Q 11/02/90 K-40 1570 k 160 1020 k 100 1360 a 140 999 X 100 1020 R 100 1190 R 120 1300 R 130 C) I- 131 < 0.2 < 0.3 < 0.2 < 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

< 0.3 1300 2 130

< 0.3 1290 k 130

< 0.4 11/30/90 K-40 1-131 1150 i 110

< 0.2 1450 a 150

< 0.1 922 t

< 0.1 92 1340 k 130

< 0.2 1210 k 120

< 0.1 1280 k 130

< 0.1' 1170 t 0.2 120 12/28/90 K-40 1-131 1180 a 120

< 0.5 1460 2 150

< 0.2 1350 k 140

< 0.2 1350 k 130

< 0.2 1230

• 120

< 0.2 1260 k 130

< 0.2 1220 f

< 0.2 120

'lpptcal LLDs are found ln table 8-12. All other gamma emitters were <LLD.

ThBLR B-10 INDIANhMICHIQhN 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 OF$ 8outh 3840 a 380 25.5k 8.6 < 200 < 20 05/16/90 ONS-North < 100 3150 4 310 35.7 k 10.3 < 300 < 20 05/16(90 OFS-North 1700 2 170 80.1 k 1.1 < 200 < 20 05(16/90 ONS-South < 80 884 2 89 20.3 k 6.6 < 200 < 20 10/16/90 OFS-South 3310 k 330 < 20 < 400 <40 10/16/90 ONS-North < 300 3320 R 330 < 30 < 500 < 50 10/23/90 ONS-South 2490 2 250 30.3 t 5.2 < 100 =< 10 10/23/90 ONS-North 2590 2 260 35.0% 5.3 < 100 < 10 2838 k 2049 S7.8% 4S LLDs are found ln table B-12.

TAB INDIANAMICHIGhN 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 SECIOR-h Broad Leaves 1060 k 240 889 t 212 < 30 08/18/90 SECIOR-H Leaves 2700 2 300 3700 k 370 < 6Q 08/18/90 SECYOR-E Leaves 1190 k 250 3360 k 390 < 60 Q8/18/90 SECIOR-H Grapes < 100 1760 2 180 < 60 08/18/90 SECIOR-E Grapes < 100 2300 k 230 < 50 Averse 2 s.&,

i 1650 k 1823

~

7ypteaI LLDs are found tn table B-12.

TABLE B-12 BG)IANAMCHIGANPOWER 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 60 N/A N/A 30 N/A N/A Barium/La-140 10 N/A N/A 50/10 60/15 200 Cesium-134 10 60 1000 7 15 30 Ru,Rh-106 80 N/A N/A 50 N/A N/A Cesium-137 10 60 2000 6 18 SQ Zr.Nb-95 10 N/A N/A 10/15 30/15 400 Manganese-54 10 N/A N/A 6 15 1000 Iron-59 15 N/A NIA 15 30 400 Zinc-65 20 N/A N/A 10 30 300 Cobalt-60 10 NIA N/A 5 30 300 Cobalt-58 10 NIA N/A 6 15 1000 Iodine-131 20 60 100 10 1 2 Cerium-144 30 N/A N/A 0.007 N/A N/A Barium/La-140 50/10 60/15 300 0.005 N/A N/A Cesium-134 7 15 60 0.002 0.06 10 Ru.Rh-106 50 N/A N/A 0.01Q N/A N/A Cesium-137 6 18 70 O.Q02 0.06 20 Zr,Nb-95 20 N/A N/A 0,002 N/A N/A Manganese-54 6 N/A N/A 0.002 N/A N/A Iron-59 16 N/A N/A 0.002 N/A NIA Zinc-65 10 NIA N/A 0.002 N/A N/A Cobalt-60 6 NIA N/A 0.002 N/A N/A'/A Coat-58 5 N/A N/A 0.002 N/A Iodine-131 10 1 3 0.040 0.07 0.9 Charcoal Trap

TABLE nt.)

INDIANAMICHIGANPOWER 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 40 N/A N/A 150 N/A N/A Barium/La-140 60 N/A N/A 5 N/A N/A Cesium-134 6 230 1000 3Q 150 N/A Ru.Rh-106 50 N/A N/A 200 N/A N/A Cesium-137 6 150 2000 30 180 N/A Zr,Nb-95 30 N/A N/A 40 N/A N/A Manganese-54 5 130 30000 9 N/A N/A Iron-59 15 260 10000 50 N/A N/A Zinc-65 10 260 20000 60 N/A N/A Cobalt-60 5 130 10000 20 N/A N/A Cobalt-58 5 130 30000 20 N/A N/A lodlne-131 10 N/A N/A 30 N/A N/A Gross Beta Trttlum ILDa and Re Alr Parttculates 0.01 0.01 pCl/m3 N/A Surface Water 4 4.Q pCl/1 N/A Ground Water 4 4.0 pCl/1 N/A Drinking Water 4 4.0 pCl/l N/A Surface Water 2000 2000 20,000 Ground Water 2000 2000 20.000 Drlnklng Water 2000 2000 20.QOO

APPENDIX C ANALYTICALPROCEDURES SYNOPSIS 65

DETERMINATIONOF GROSS BETA ACTIVFIT'NWATER SAMPLES I0. ~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 Gross counts of sample including blank B Counts of blank E Counting efficiency T Number of minutes sample was counted t Number of minutes blank was counted V 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 tritium units of the standard 3.234 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 CN the net cpm of the standard of volume VN OG the gross cpm of the sample of volume VS B the background of the detector in cpm alt 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 (N/Dt,"BC-BA)/(2.22 V YS DFSR8g ESR 8g)

TWO SIGMA ERROR Sr-89 2((N/Dt+BC+BA)/LR)1/2/(2.22 V YS DFSR 8g E 9 LLD Sr-89 4,66((BC+BA)/ht) 1/2/(2.22 V YS DFSR 8g ESR RESULT Sr-90 (N/bt - B)/(2.22 V Y1 Y2 DF IF E)

TWO SIGMA ERROR Sr-90 2((N/b,t+B)/ht) 1/2/(2 22 V Y1 Y2 DF E IF))

LLD Sr-90 4.66(B/ht) 1/2/(2 22 V Y1 Y2 IF DF E) 73 '

where: N total counts from sample (counts) ht counting time for sample (min) background rate of counter (cpm) using absorber conhgurati 2.22 dpm/pCi volume or weight of sample analyzed background addition from Sr-90 and ingrowth of Y-90 BA 0.016 (K) + (K) Ey/abs) (IGy gP)

YS chemical yield of strontium DF SR-89 decay factor from the mid collection date to the counting date for SR-89 ESR-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)

>>Y-90) the decay factor for Y-90 from the "milk" time to the mid count time Ey-90 efQciency of the counter for Y-90 IFY-90 ingrowth factor for Y-90 from scavenge time to mQking tim(

IGY-90 the ingrowth factor for Y-90 into the strontium mount from "mQk" time to the mid count time 0.016 the emciency of measuring SR-90 through a No. 6 absorber Ey/abs the efBciency of counting Y-90 through a No. 6 absorber background rate of counter (cpm)

Y1 chemical yield of yttrium Y2 chemical yield of strontium decay factor of yttrium from the radiochemical milking time the mid count time efBciency of the counter for Y-90 IF 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 (N/6t-B)/(2.22 E V Y DF)

'DVO SIGMA ERROR 2((N/bt+B)/h,t) / (2.22 E V Y DF)

= 4.66(B/ht) 1/2/(2.22 E V Y DF) where: total counts from sample (counts) counting time for sample (min) background rate of counter (cpm) 2.22 dpm/pCi V 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 (S-B)/2.22 t E,V F DF)

'IWO SIGMA ERROR 2(S+B) / /(2.22 t E V F DF) t 4.66(B)1/2/(2.22 t E V F DF) where: S 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 2.22 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

ENVIRONMENTALDOSMETRY Teledyne 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 the known exposure by the Cs-137 source R1 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 INTERLABORATORYCOMPARISONS 79

EPA INTERLABORATORYCOMPARXSON 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 INTERLABORATORYCOMPARXSON PROGRAM 1990 Collection (ENVIRQMhKENTAI)

Teledyne 0

Date Media Nuclide EPA Result(a) Isoto es Result(b) 10/31/89 Lab Perf. Gr-Alpha 49.00 2 12.00 42.33 4 5.?7 Water Ra-226 8.40 2 1.30 9.20 k 0.46 Sample A Ra-228 4.10 2 0.60 4.00 2 0.50 Sample B Gr-Beta 32.00 2 5.00 30.33 k 0.58 Sr-89 15.00 k 5.00 15.00 2 3.46 Sr-90 7.00 k 1.50 7.00 2 0.00 Cs-134 5.00 2 5.00 5.33 k 1.15 Cs-137 5.00 2 5.00 7.00 k 0.00 11/10/89 Water Ra-226 8.70 2 1.30 8.47 2 0.49 Ra-228 8.57 2 1.40 8.57 2 1.46 01/12/90 Water Sr-89 25.00 2 5.00 24.00 2 1.73 Sr-90 20.00 2 1.50 19.67 2 2.52 01/26/90 Water Gr-Alpha 12.0 2 5.0 10.00 2 1.73 Gr-Beta 12.0 5.0 12.33 k 1.53 02/09/90 k 2'5.00 Water Co-60 2 5.00 15.00 3.46 Zn-65 139.00 2 14.00 131.33 k Ru-106 139.00 2 14.00 113.67 k 4.04 (c)

Cs-134 18.00 2 5.00 15.33 2 2.31 Cs-137 18.00 2 5.00 19.33 k 3.21 Ba-133 74.00 k 7.00 66.00 2 3.46 02/23/90 Water H-3 4976.00 2 498.00 4900.00 k 100.00 03/09/90 Water Ra-226 4.9 2 0.7 4.73 2 0.47 Ra-228 12.7 k 1.9 13.00 2 1.00 03/30/90 Air Filter Gr-Alpha 5.0 2 5.0 6.33 2 0.58 Gr-Beta 31.0 2 5.0 31.67 2 0.58 Sr-90 10.0 k 1.5 9.33 k 0.58 Cs-137 10.0 k 5.0 10.67 2 1. 15 04/17/90 Water Gr-Alpha 90.0 k 23.0 79.33 2 2.89 (Lab Perf} Ra-226 5.0 4 0.8 5.67 k 0.15 Sample A Ra-228 10.2 k 1.5 9.37 2 1.44 Sample B Gr-Beta 52.0 2 5.0 53.33 2 1.53 Sr-89 10.0 2 5.0 10.67 2 1.15 Sr-90 10.0 k 1.5 9.67 k 0.58 Cs-134 15.0 k 5.0 12.67 2 1.53 Cs-137 15.0 k 5.0 16.33 2 1. 15 Footnotes at end of table.

81

US EPA INTERIdiBORATORYCOHPAMSON PROGRAM 1990 (Cont.)

(ENVIRON NTm)

Collection Teledyne Date Media Nuclide EPA Result(a) Isoto es Result(b) 04/27/90 MilR Sr-89 23.0 2 5.0 24.67 2 1.53 Sr-90 23.0 2 5.0 24.00 k 0.00 1-131 99.0 k 10.0 89.67 2 3.21 Cs-137 24.0 2 5.0 27+33 k 2.52 K 1550.0 k 78.0 1483.33 2 75.06 05/04/90 Water Sr-89 7.0 2 5.0 6.67 k 0.58 Sr-90 7.0 k 5.0 6.67 2 0.58 05/11/90 Water Gr-Alpha 22.0 2 6.0 16.00 2 1.00 Gr-Beta 15.0 k 5.0 17.00 2 1.00 06/08/90 Water Co-60 24.0 2 5.0 25.33 k 2.52 Zn-65 148.0 2 15.0 148.67 2 3.06 Ru-106 210.0 k 21.0 196.00 2 20.66 Cs-134 24.0 k 5.0 23.67 2 2.89 Cs-137 25.0 2 5.0 24.67 k 2.08 Ba-133 99.0 R 10.0 93.00 2 6.08

/22/90 Water H-3 2933.0 k 358.0 2900 k 100.00 07/13/90 Water Ra-226 12.1 2 1.8 11.37 2 0.60 Ra-228 5.1 2 1.3 4.20 2 0.75 08/10/90 Water I-131 39.0 k 6.0 36.00 k 3.00 08/31/90 Air Filter Gr-Alpha 10.0 N 5.0 16.00 2 1.00 (d)

Gr-Beta 62.0 2 5.0 63.33 2 1.53 Sr-90 20.0 k 5.0 18.00 2 1.00 Cs-137 20.0 2 5.0 18.33 2 3.21 09/14/90 Water Sr-89 10.0 2 5.0 8.67 4 0.58 Sr-90 9.0 2 5.0 9.0 4 1.00 09/21/90 Water Gr-Alpha 10.0 k 5.0 11.00 k 1.00 Gr-Beta 10.0 k 5.0 11.00 k 1.00 Footnotes at end of table.

US EPA VFTRRLABORATORYCOHPARXSON PROGRAM 1990 (Cont.)

(ENVIRONMENTAL)

Collection Teledyne Date Media Nuclide EPA Result(a) Isoto es Result(b) 09/28/90 Mil~ Sr-89 16.0 k 5.0 9.0 k 2.65 (e)

Sr-90 20.0 2 5.0 15.33 k 0.58 I-131 58.0 k 6.0 54.67 k 1.53 Cs-137 20.0 k 5.0 23.00 k 1.73 K 1700.0 k 85.0 171Q.OQ k 65.51 10/15/90 Water Co-60 20.0 2 5.0 21.00 k 1.00 Zn-65 115.0 2 12.0 115.00 k 11.53 Ru-106 151.0 2 15.0 142.00 2 8.66 Cs-134 12.0 2 5.0 11.00 k 0.00 Cs-137 12.0 2 5.0 16.33 k 2.52 Ba-133 110.0 2 11.0 94.67 2 5.13 (f) 10/30/90 Lab Perf; Gr-Alpha 62.00 2 16.00 5?.00 2 1.00 Water Ha-226 13.6 2 2.0 12.67 2 1.27 Sample A Ha-228 5.0 2 1.3 4.87 2 0.23 Sample B Gr-Beta 53.0 2 5.0 51.00 2 2.31 Sr-89 20.0 2 5.0 19.00 2 3.61 Sr-90 15.0 k 5.0 14.33 2 0.58 Cs-134 . 7.0% 5.0 9.00 2 Cs-137 5.0 2 5.0 7.6? k 1.15 10/19/90 Water H-3 7203.0 2 720.0 7133.33 2 251.66 11/09/90 Water Ra-226 7.4 2 1.1  ?.27 2 0.38 Ha-228 7.7 2 1.9 7.57 2 0.32 Footnotes at end of table.

83

US EPA INTERLABORhTORYCOMPhRISON 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.

Incomplete removal of calcium, lead to erroneously high strontium yields o e . MOre care is be taken in thee strontium nitrate and strontium sulfate precipitation steps to ensure a 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

TRMIDINGGRAPH - 5 US EPA CROSS CHECK PROGRAM GROSS BETA IN AIR PARTICULATES L

00 Ul fJ CL 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 08/25/89 EPA Test invalid Tl 13 sigma e EPA%3sigma

US EPA CRO HECK PROGKf,84 CESIUM-137 IN AIR PARTICULATES

-100 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 IIIK 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 t

o Tl 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 cs EPA I 3 sigma 90 Tl k3 sigma 80 70 60 50 40 30 20 10 1981 1982 1983 1984 1985 1987 1988 1989 1990 08/25/89 EPA test Invalid.

US Em CaOSS HEeK rmooaaM GROSS ALPHAIN 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 TRITIlMIN WATER fyg. 1)

D CL 1981 1982 1983 1984 1985 o Tl k3 sigma EPA k3 sigma

US EPA CROSS CHECK PROGRAM TIUTIUMIN WATER (pg. 2) 1985 1986 1987 1989 1990 1991 a TI13S o EPA13S

APPENDIX E REMP SAMPLING AND ANALYTICALEXCEPTIONS 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 BAMKXNGhND 2LNALYSIS DURING 1990 Date of Reason(s) for Loss/

Station Descri tion Sam lin Exce tion Air Particulate 04/23/90 Samples inadvertently lost at the laboratory.

A-2 Air Iodine 10/22/90 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/ 12/31/90 Electrical malfunction; Air Iodine LLD not met due to low sample volume. Unit sent for repairs.

OFS-6 TLD Second Qtr. TLD, wire cage and enti telephone pole missing at time of TLD exchange.

L-2, L-3 Surface Water Ol/ll/90 Sample not avaQable due L-4, L-5 to ice on shoreline.

N/A DrirQdng Water 01/12/89 Analytical lab used an LLD of through 2 pCi/1 for I-131 analyses.

06/15/89 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 INDMiVLLMICHIGANPOWER COMPANY - DONALD C. COOK NUCLFMR PLANT Mlk and Animal Survey Ssuvey Distance Sector Year Mlles Name Address N/A No milk animals N/A N/A No milk animals N/A B N/A No mQk animals N/A N/A No milk animals N/A N/A No milk animals N/A N/A No milk aninmls N/A D 4.75 Gerald Totzke 6744 Totzke Rd.. Baroda 4.75 Gerald Totzke 6744 Totzke Rd.. Baroda 10.5 Andrews Univ. Berrien Springs 10.5 Andrews Univ. Berrien Springs 6.8 Lee Nehon RFD 1, Box 390A, Snow Rd.

Baroda 6.8 Lee Nelson RFD 1, Box 390A, Snow Rd.

Baroda 4.25 G. G. Shuler 6 Sons RFD 1, Snow Rd.. Baroda 4.25 G. G. Shuler Bt Sons, RFD 1, Snow Rd.. Baroda H 5.2 Norman Zelmer 11701 S. Gast Rd.. Bridgman 5.2 Norman Zelmer 11701 S. Gast Rd., Bridgman a 7.8 Jerry Warmbein Box 184. Avery Rd., 'Ihree Oaks b 7.8 Jeny Warmbein Box 184, Avery Rd., Three Oaks K a 12 Kenneth Tappan Rt. 2, Kruger Rd, Three Oaks b 12 Kenneth Tappan Rt. 2, Kruger Rd, Three Oaks ther sectors are over water.

eporting Year ear prior to reporting year.

106

Figure 6 INDIANAMICHIGANPOWER COMPhNY - DONhLB C. COOK NUCLEAR PLANT ResldenUal Land Use Survey House (i Street Address" 2161 11-11-0006-0004-01-7 lier Drive, Rosemaxy Beach 2161 6-4.1 Rt. ft 1, Rosentaty Rd.

B 2165 11-11-0006-0004-09-2 lier Drive, Rosemary Beach 2165 6-4.9 Rt. tel, Rosemary Rd.

a 3093 11-11-6800-0028-00-0 Lake Road, Rosemary Beach b 3093 6-28 Rt. (I 1, Rosetnaxy Rd.

D a 5733 1 1-11-0005-0036-01-8 7500 Thorton Drive b 5733 5-36 7500 Dtorton Drive 5631 1 1-1 1-0005-0009-07-0 7927 Red Arrow Highway 5631 5.25.5 7927 Red Arrow Highway o F 5392 11-11-0008-0015-03-1 8197 Red Arrow Highway 5392 8-10.3 3900 Lbringston Rd.

3728 11-11-0007-0013-01-4 Livingston Road 3728 7-4 4212 Lbringston Rd.

H a 4944 11-11-8600-0004-00-1 Wildwood 4944 7-7+8 Wildwood Subdbrlsion (8700 Red Armw Hwy.)

3366 1 1-1 1-0007-0010-02-3 Livingston Hills 3366 7-1 0.3 4600 W. Livingston M.

Livingston HQIs Subdivision) a 10 3090 11-11-0007-0010-03-1 Livingston Hills b 10 3090 7-10.3 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 INDMNAMICHIGANPOWER 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 08/29/90 < 200 ( 0.2 < LLD

'urke 08/29/90 < 200 < 0.2 < LLD Halstead 08/29/90 < 100 < 0.2 < LLD Ten gerstrom 08/31/90 < 100 < 0.1 < LLD Scott 08/31/90 < 100 ( 0.1 < LLD Cone 09/-I I /90 < 100 < 0.2 < LLD Mc Clean 09/19/90 < 200 < 0.2 < LLD acich 09/19/90 < 200 < 0.2 < LLD H

LXVINGSTON HIL Swamp Water 09/10/90 < 20Q < O.l < LLD Malmstadt 09/26/90 < IOQ < 0.1 ( LLD Duplicate 09/26/90 < 200 < 0.1 Scup ham 11/12/90 < 200 < 0.2 < LLD Duplicate 11/12/90 350 < Q.2 ( LLD New 11/29/90 ( 100 < Q.l < LLD Well'uplicate 11/29/90 < 200 < 0.2 < LLD 108

Figure 8

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'(lt Pf ;lo ,I'ivin ston Hills Well Census Ma Xndicates location of sampled

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Location of Swamp Sample 4

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APPENDIX G SUlHMARYOF THE PRE-OPERATIONAL RADIOLOGICALMONITORINGPROGRAM 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 duplicatee sam samp ling 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 limi limits.. A comparison o was subsequently made between the onsite, offsite, and control 'group TLD's.

116

BLlNDDUPLICATE SAMPLE PROGRAM - 1990 Sample heceptable Routine Sam 1e Blind Du ilcate W Qmits 04/06(90 Milk Gamma-K-40 1240 + 120 1230 2 120 1120-1360 pCl/liter 04/22/90 1LD-Contxol Env. Supr. OIIIce Direct Radiation - 10.8 k 0.2 8.3% 0.3(b) 10.6-11.0 (First gtr.) mR/std month 05/06/90 Groundwater Well - N5 H-3 700 k 100 650 k 90 600-800 pCI(liter 11/03/90- Airborne N/A Gross Beta .014 2 .001 .014 2 .001 .013-.015 11/09/90 pCI/m3 11(08/90- Waterborne N/A 1-131 N/A 11/13/90 pCI/liter I 0/05/90. Waterborne N/A H-3 ( 200 110'0 N/A I l(17/90 pCI/liter 10/14/90- Waterborne N/A Gamma Isotopic (c) All nuclides <<LLD All nuclldes a OLD N/A 11/20/90 ll/12/90 Groundwater 1A H pCI/liter 1500 k 400 1100 t 100 1100 k 1900 11/12/90 Groundwater 12 H pCI/liter 2700 k 400 2700 k 100 2300 k 3100 ll/12/90 Groundwater H pCl/liter 1000 k 400 710 X 100 600 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 tructed to perform future duplicate analyses using samples wit detec e activity.

APPENDIX I 1 SUbQKARY OF THE SPIKE AND BLKNKSAMPLE PROGRAM 118

SURSGLRY OF THE %TEE AND BLANKKQhKPLE 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 112 5 6-16 Gross Beta 21t 5 16-26 Gamma (Eu-154) 1.4 k 0.2 E 05 1.2 - 1.6 E 05 H-3 tG) 2.7 k 0,3 E 03 2.4- 3.0 E 03 An i D A ivi i 1 88267 01/03/90 1.1 2 0.2 E Ol 88268 01/10/90 1.1 2 0.2 E 01 88269 01/17/90 1.4 2 0.2 E Ol 88270 Ol/24/90 1.5 0 0.2 E Ol 88271 Ol/31(90 1,4 % 0.2 E Ol 92203 02/07/90 1.6 k 0.2 E 01 99204 02/14/90 1.5 k 0.2 E Ol 9205 02/21/90 1.5 k 0.2 E 01 2206 O2/28/SO 1,6 % 0.2 E 01 95348 03/07/So 1.1 k 0.2 E 01 95349 03/14/90 1.3 k 0.2 E 01 95350 03/21/90 1.5 2 0.2 E 01 95351 03/28/90 1.2 k 0.1 E 01 S7594 04/04/90 1.1 k 0.2 E Ol 97595 04/ll/90 1.5 k 0.2 E 01 97596 04/18/90 1.5 k 0.2 E 01 97597 04/25/90 1,2 k 0.2 E 01 00652 05/02(90 1.2 k 0.2 E 01 00653 05/09/90 1.3 2 0.2 E 01 00654 05/16/SO 1.4 k 0.2 E 01 00655 05/23/90 7.6 k 1.3 E QO 00988 05/30/90 1.2 2 0.2 E Ol 04157 06/06/90 1.1 2 0.2 E 01 04158 06(13/eo 1.4 k 0.2 E 01 04159 06/20/So 1.1 k 0.2 E 01 04160 06/27/90 1.2 k 0,2E01 06920 07/05/90 9.1 4 1.6 E 00 06S21 07/11/90 9.1 k 1.6 E 00 06922 07/18/90 1.2 k 0.2 E 01 06923 07/25/SO 1.0 k 0.2 E 01 120

GROSS ALP]~g~~

OS691 08/01/go 1.1 2 0.2 E 01 09692 08/08/90 9.6 k 1.5 E 00 09693 08/I5/90 1.2 k 0.2 E 01 09694 08/22/90 1.4 2 0.2 E Ol 09695 08/29/SO 1.3 2 02EOI 13338 09/05/90 1.3 k 0.2 E 01 13339 09/12/90 1.3 k 0.2 E 01 13340 09/19/go 1.2 k 0.2 E 01 13341 09/26/SO 1.3 2 0.2 E Ol 15855 10/03/90 1.3 k 0.2 E 01 15856 10/10/90 1.1 2 0.2 E 01 15857 10/17/90 1.2 k 0.2 E Ol 15858 Io/24/gO 1.1 2 0.2 E 01 15859 lo/31/90 1.3 2 0.2 E 01 18566 11/07/90 1.4 k 02EOI

'18567 11/14/90 1.2 2 0.2 E 01 18568 Il/21/SO 1.2 4 0.2 E 01 18569 11/28/go 1.2 2 0.2 E 01 21047 12/05/90 1.3 2 0.2 E Ol 21048 12/12/90 1.1 2 0.2 E Ol 21049 12/19/SO 1.3 2 0.2 E Ol 21050 12/26/90 1.3 2 0.2 E Ol GROSS BETA 88262 01/03/90 1.7 k 0.1 E 01 88263 01/10/90 1.7 2 0.1 E 01 88264 01/17/90 1.7 k 0.1 E 01 88265 01/24/eo 1.9 k 0.1 E 01 88266 01/31/90 2.0 k 0.1 E 01 92199 02/07/90 1.7 k 0.1 E 01 92200 02/14/90 1.8 k O.l E 01 92201 02/21/90 1.9 k 0.1 E 01 92202 02/28/90 2.0 k 0.1 E 01 S5344 03/07/SO 1.8 2 0.1 E 01 95345 03/14/90 1.8 k 0.1 E 01 95346 03/21/90 2.0 k 0.1 E 01 95347 03/28/90 1.6 k O.l E OI 121

GROSS BET+ (~~)

97590 04/04/90 164 01 Eol 97591 O4/11/SO 1.72 0.1 E 01 97592 04/18/9Q 182 01 Eol 97593 04/25/90 1.82 0.1 E 01 00647- 05/02/90 1.7% 0.1 E 01 00648 05/Q9/SO 1.72 O.l E 01 00649 05/16/9Q 1.9% O.l E 01 00650 05/23/90 1.9% 0.1 E 01 00651 05/30/9Q 1.8% O.l E Ol 04153 06/06/90 2.0% O.l E 01 04154 06/13/90 2.0% 0.1 E 01 04155 06/20/9Q 1.7% 0.1 E 01 04156 06/27/90 1.7 k 0.1 E 01 06916 07/05/90 1.9 k 0.1 E Ol 06917 07/11/90 2.02 0.1 E 01 06918 07/18/90 1.7 k O.l E Ol 06919 07/25/90 1.7% O.l E 01 09686 08/Ol/SO 1.84 O.l E 01 09687 OS/OS/SO 1.82 0.1 E 01 09688 08/15/90 1.9 2 0.1 E Ol 09689 08/22/SO 1.82 O.l E 01 9690 08/29/90 1.62 O.l E 01 13334 09/QG/SO 1.7R O.l E 01 13335 09/12/90 1.3% 0.1 E 01 13336 09/19/90 2.0 k 0.1 E 01 13337 09/26/90 2.0 2 0.1 E Ol 15850 IO/O3/SO 1.8 2 0.1 E 01 15851 10/10/90 2.0 2 O.l E 01 15852 10/17/90 2.0 k 0.2 E 01 15853 10/24/90 1.9% O.l E Ol 15854 10/31/90 2.1 k O.l E 01 18562 ll/07/90 2.1 k 0.2 E Ol

,18563 11/14/90 1.9 k 0.1 E 01 18564 11/21/90 2.0% 0.1 E 01 18565 ll/28(90 1.8 k 0.1 E Ol 21043 12/05/90 1.7% 0.1 E 01 21044 12/12/90 2.0% 0.1 E Ol 21045 12/19/90 2.04 O.l E Ol 21046 12/26/90 1.8 k 0.1 E 01 122

GA5KbfA Nlu-154) 88292 Ol/03/9Q 1.46 2 0.15 E 05 88293 01/10/90 1.44 2 0.14 E 05 88294 01/17/90 1.45 2 0.15 E 05 88295 01/24/90 1.39 2 0.14 E 05 882S6 01/31/90 1.46 2 0.15 E 05 92223 02/07/90 1,44 2 0.14 E 05 92224 02/14/90 1.43 2 0.14 E 05 92225 02/21/90 1.40 2 0.14 E,05 92226 02/28/90 1.40 2 0.14 E 05 95368 03(07(SQ 1.43 2 0.14 E 05 95369 03/14/90 1.41 k 0.14 E 05 95370 03/21/90 1.46 2 0.15 E 05 95371 03/28/90 1.37 2 0.14 E 05 97614 04/04/SO 1.40 k 0.14 E 05 97615 04/11(90 1.37 k 0.14 E 05 97616 04/18/90 1.42 2 0.14 E 05 97617 04/25/90 1.4? k 0.15 E 05 00676 05/02/90 1.43 k 0.14 E 05 00677 05/09/90 1.44 k 0.14 E 05 00678 05/16/90 1.43 2 0.14 E 05 00679 05/23/90 1.45 2 0.15 E 05 00680 05/30/90 1.42 k 0.14 E 05

, 04177 06/06/90 1.40 k 0.14 E 05 04178 06/13/9Q 1.43 2 0.14 E 05 04179 06/20/90 1.43 2 0.14 E 05 04180 06/27/90 1.44 2 0.14 E 05 06940 07/05/90 1.42 2 0.14 E 05 06941 07/11/SO 1.41 2 0.14 E 05 06942 07/18/90 1.41 2 0.14 E 05 06943 07/25/SO 1.44 2 0.14 E 05 09716 08/01(9Q 1.45 2 0.15 E 05 09717 08/08/90 1.44 2 0.14 E 05 09718 08/15/90 1.42 2 Q.14 E 05 09719 08/22/90 1.35 2 0.14 E 05 0972Q 08/29/90 1,38 2 0.14 E 05 13358 OS/05/SO 1.46 k 0.15 E 05 13359 09/12/SO 1,22 k 0.12 E 05 13360 09/19/90 1.41 k 0.14 E 05 13361 09/26/90 1.33 2 0.13 E 05 15880 10/03/90 1.38 2 Q.14 E 05 15881 10/10/90 1.38 k 0.14 E 05 15882 10/17/90 1.44 2 0.14 E 05 15883 10/24/90 1.42 k 0.14 E 05 15884 10/31/90 1.40 k 0.14 E 05 123

GAhBKh (Eu-154) (Cont.)

18586 18587 11/0?/90 11/14/90 1.39 1.42 i2 0.14 0.14 E 05 E 05 18588 II/21/90 1.44 2 0.14 E 05 18589 I I/28/90 1.35 2 0.14 E 05 21067 12/05/90 1.45 2 0.15 E 05 21068 12/12/90 1.42 2 0.14 E 05 21069 12/19/90 1.43 k 0.14 E 05 21070 12/26/90 1.40 k 0.14 E 05 TRITHJM - QX-3)

An fs D e A tivi Ci 1 88277 01/03/90 2.7 2 0.2 E 03 88278 Ol/10/90 2.7 2 0.1 E 03 88279 Ol/17/90 2.6 2 0.1 E 03 88280 01/24/90 2.9 2 0.1 E 03 88281 01/31/90 2.8 2 Q.l E 03 92211 02/07/90 2.6 2 0.1 E 03 92212 02/14/90 2.9 2 O.l E 03 2213 02/21/90 2.7 2 0.1 E 03 2214 02/28/90 2.5 2 0.1 E 03 95356 03/07/90 2.7% 0,1 E 03 95357 03/14/90 2.6k O.l E 03 95358 03/21/90 2.8 k O.l E 03 95359 03/28/90 2.8 2 O.l E 03 97602 04/04/90 2.7 2 O.l E 03 97603 04/11/90 2.8% 0.1 E 03 97604 04/18/90 2.5 2 0.1 E 03 97605 04/25/SO 2.8 k 0.1 E 03 00661 05/02/90 2.7 2 O.l E 03 00662 05/09/SO 2.7 2 0.2 E 03 00663 05/16/90 2.6% 0.1 E 03 00664 05/23/90 2.8k 0.1 E 03 00665 05/30/90 2.7 k 0.1 E 03 04165 06/06/90 2.5 2 0.1 E 03 04166 06/13/90 2.5 2 0.1 E 03 04167 06/20/90 2.4 2 0.2 E 03 04168 06/27/90 2.5 2 0.1 E 03 06928 07/05/90 2.6k 0.1 E 03 06929 07/11/90 2.5 2 0.1 E 03 06930 07/18/90 2.4 2 0.1 E 03 06931 07/25/90 2.7 2 0.1 E 03 701 08/01/90 2.4 2 0.1 E 03 124

09702 08/08/90 2.4 2 O.I E 03 09703 09704 08/15/90 08/22/90 2.7 2.5 f 0.1 E 03 2 O.l E 03 09?05 08/29/SP 2.4 k 0.1 E 03 13346 OS/05/9Q 2.4 2 0.1 E 03 13347 09/12/go 2.6 2 0.1 E 03 13348 09/IS/90 2.5 2 O.l E 03 13349 09/26/90 2.6 2 0.1 E 03 15865 IQ/03/90 2.6 2 0.1 E 03 15866 IO/IO/SO 2.5 2 0.1 E 03 15867 10/17/gp 2.5 k 0.1 E 03 15868 10/24/90 2.5 J 0.1 E 03 15869 10/31/90 2.5 k O.l E 03 18574 ll/07/go 2.7 k 0.1 E 03 18SVS 11/14/SQ 2.4 2 O.l E 03 18576 ll/21/90 2.4 2 0.2 E 03 18577 ll/28/90 2.6 2 0.1 E 03 21055 12/OS/SO 2.6 k 0.1 E 03 21056 12/12/90 2.8 k 0.1 E 03 21057 12/19/90 2.7 k 0.1 E 03 21058 12/26/90 2.? 2 O.l E 03 12S

Teledyne Isotoyes In-Bourn %saks Sample Results 1990 - Water GROSS ALE%BL 88257 Ol/03/90 L. T. 7. E-01 88258 01/10/90 L. T, 6. E-01 88259 01/17/90 L. T. 5. E-01 88260 88261 92195 01/24/90 01/31/90 02/07/90 L. T.

T.

L. T.

6.

5.

5.

E-01 E-01 E-OI 92196 02/14/90 L. T. 7. E-01 92197 02/21/90 L. T. 3. E-01 92198 02/28/90 L'. T. 6. E-01 95340 03/07/90 L. T. 6. E-Ol 95341 03/14/90 L. T. 6. E-01 95342 03/21/9Q L. T. 4. E-01 95343 03/28/90 L. T. 4. E-Ol 97586 04/04/eo L, T. 4. E-01 7587 04/11/90 L, T. 6. E-01 7588 04/18/90 L. T. 5. E-ol 7589 04/25/90 L. T. 4. E-01 00594 05/02/90 L. T. 6. E-01 005S5 05/09/90 L. T. 6. E-01 00596 05/16/90 L. T. 4. E-01 00597 05/23/90 L. T. 4. E-01 00598 05/30/90 L. T. 8. E-01 04149 06/06/90 L. T. 4. E-01 04150 06/13/90 L. T. 4. E-ol 04151 O6/2O/SO L. T. 6. E-01 04152 06/27/SO L. T. 5. E-ol 06912 07/05/90 L T. 4. E-ol 06913 07/11/90 L. T. 7. E-ol 06914 07/18/90 L. T. 7. E-01 06915, 07/25/90 L. T. 7. E-01

'9681 08/01/90 L. T. 4. E-Ol 09682 08/08/9Q L. T. 6. E-01 09683 08/15/So L. T. 5, E-Ol 09684 o8/22/eo L T. '4. E-01 09685 08/29/90 L. T. 5. E-01 126

GROSS ~gal(c~)

13330 09/05/90 L. T. 5. E-pl 13331 os/12/so L T. 8. E-01 13332 09/IS/90 L. T. 4. E-01 13333 09/26/90 L. T. 4. E-01 15845 10/03/so L. T. 5. E-01 15846 10/10/gQ L. T. 4. E-01 15847 IO/17/go L. T. 4. E-OI 15848 10/24/90 L. T. 4. E-Ol 1584S 10/31/so L T. 6. E-Ol 18558 II/07/gp L. T. 6. E-ol 18559 ll/14/go L. T. 4. E-Ol 18560 11/21/90 L. T. 7. E-01 18561 11/28/SO L. T. 4. E-01 21039 12/05/SQ , L. T. 6. E-01 21O4O 12/12/90 L. T. 6. E-01 21041 12/19/SO L. T. 4. E-01 21042 12/26/90 L. T. 5. E-01 88257 01/03(gp LT, 8. E-01 88258 01/10/90 L. T, 9. E-OI 8825g Ol/17/SQ L. T. 8. E-Ol 88260 Ol/24/gp L. T. 7. E-01 88261 01/31/gp L. T. 7. E&I 92195 02/07/SO L. T. 7. E-Ol 92196 o2/14/so L. T. 7. E-01 92197 02/21/SO L. T, 7. E-01 92198 02/28/SO L. T. 8. E-ol 95340 O3/07/go L. T. 7. E-01 95341 03/14/go L. T. 8. E-Ol 95342 03/21/90 L. T. e. E-Ol 95343 03/28/90 L. T. 7. E-ol 97586 04/04/90 L. T. 8. E-OI 97587 04/ll/90 L. T. 7. E-01 97588 04/18/90 L. T. 8. E&1 97589 04/25/90 L. T. 7. E-01 00594 o5/o2/so L. T. 8. E1 00595 05/09(90 L. T. 7. E-Ol 00596 05/16/90 L. T. 6. E-01 00597 05/23/90 L. T. 7. E-01 00598 05/30/90 L. T. 8. E-Ol 127

CROSSazmg, i 04149 06/06/90 L. T. 7. F-Ol 04150 06/13 /90 L. T. 7. E-01 04151 06/20/90 L. T. 8. E-01 04152 06/27/90 L. T. 7. E-OI 06912 07/05/90 L T. 8. E-01 06913 07/ll/90 L. T. 7. E-01 06914 07/18/90 L. T. 8. E-01 06915 07/25/90 L. T. 8. E-01 09681 o8/ol/so L. T. 8. E-01 09682 o8/o8/go L. T. 7. E-Ol og683 08/15/90 L. T. 8. E-01 09684 o8/22/so 4 T. 7. E-01 09685 08/29/SO L. T. 8. E-01 1333O 09/05/SO LT. 8. E-ol 13331 09/12/go L.T. 8 E-Ol 13332 09/19/90 L. T. 7. E-01 13333 09/26/gO L. T. 8. E-01 15845 10/03/go L. T. 8. E-01 15846 10/lo/go L. T. 8. E-01 1584? 10/17/90 L T. 1. EOO 5848 10/24/90 L, T. 7, E-Ol 849 10/31/90 L. T. 8. E-Ol 8558 11/07/9Q L. T. 8. E-01 18559 , ll/14/9Q L. T. 7. E-01 18560 ll/21/gO L. T. 7. E-01 18561 11/28/90 L. T. 8. E-01 21039 12/o5/so L..T. 8. E-01 21040 12/12/90 L. T. 8. E-01 21041 12/19/SO L. T. 9. E-01 21042 12/26/90 L. T. 8. E-01 TRITM - g-3) 8828? 01/03/90 L. T. 2. E02 88288 Ol/10/90 L. T. 2. E02 88289 01/17/90 L. T. l. E02 88290 OI/24/90 L. T. 2. E02 88291 Ol/31/So L. T. I. E02 92219 02/07/90 L. T. 2. E02 99220 02/14/9Q L. T. I. E02 9 221 02/21/90 L. T. I. E02 22 02/28/90 L. T. 1. E02 128

TRImJM - QX-8) (Cont.)

95364 03/07/90 L. T. 1. E02 95365 03/14/90 L.T. 2. E02 95366 03/21/90 L T. 2. E02 95367 03/28/90 L.T. 2. E02 97610 04/04/SO LT. 1. E02 97611 04/11/90 L.T. 2. E02 97612 04/18/90 L.T. 2. E02 97613 04/25/90 L.T. 1. E02 00671 05/02/90 L.T. I. E02 00672 05/09/SO L.T. 2. E02 00673 05/16/SO L.T. l. E02 00674 05/23/90 L. T. 1. E02 00675 05/30/90 L. T. l. E02 04713 06/06/90 L.T. 2. E02 04714 06/13/90 L,T. l. E02 04175 06/20/90 L. T. 1. E02 04176 06/27/90 L.T. 2. E02 06936 07/05/90 L.T. 2. E02 06937 07/11/90 L. T. I. E02 06938 07/18/90 L. T. l. E02 06939 07/25/90 L. T. l. E02 09711 08/01/9Q L. T. l. E02 09712 08/08/90 L. T. I. E02 09?13 08/15/90 L.T. 2. E02 09714 08/22/90 L.T. l. E02 09715 08/29/90 L. T. 1. E02 13354 09/QS/9Q L.T. 2. E02 13355 09/12/90 L. T. l. E02 13356 09/19/90 L.T. 2. E02 13357 09/26/90 L.T. 1. E02 15875 10/03/SO LT. 2. E02 15876 10/IQ/90 L. T. 2. E02 15877 10/17/90 L. T. l. E02 15878 10/24/90 L.T. 1. E02 15879 10/31/90 L.T. 2. E02 18582 11/07/90 L.T. 1. E02 18583 11/14/90 L T. l. E02 18584 ll/21/90 L. T. 2. E02 18585 11/28/90 LT. 1. E02 21059 12/05/90 L. T. l. E02 21064 12/12/90 'L. T. 2. E 02 21065 12/19/90 LT. 2. E02 21066 12/26/90 L.T. 2. E02 12Q

APPENDIX J TLD QUALXTF CONTROL PROGRAM 130

TLD QUAUXF CONTROL PROGRAM Teledyne 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

QUALITTCON QL - TLDS TLD REM) 205 0

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QUALITYCONTROL - TLDs TLD RFMDER 211 1.5 0.5

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