ML18121A135

Submittal of 2017 Annual Radioactive Effluent Release Report - Report 41

ML18121A135
Person / Time
Site:	Wolf Creek
Issue date:	04/25/2018
From:	Hafenstine C Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA 18-0046
Download: ML18121A135 (62)

Text

W$LFCREEK 'NUCLEAR OPERATING CORPORATION April 25, 2018 Cynthia R. Hafenstine Manager Nuclear and Regulatory Affairs RA 18-0046 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: Wolf Creek Generating Station 2017 Annual Radioactive Effluent Release Report - Report 41 To Whom It May Concern:

The purpose of this letter is to transmit the enclosed Wolf Creek Generating Station (WCGS)

Annual Radioactive Effluent Release Report. The report covers the period from January 1, 2017 through December 31, 2017. It is being submitted pursuant to Section 5.6.3 of the WCGS Technical Specifications. The report provides procedures AP 07B-003, Revision 8, "Offsite Dose Calculation Manual," AP 07B-004, Revision 21, "Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program)," and AP 31A-100, Revision 8, "Solid Radwaste Process Control Program" that are included as part of the report in accordance with Section 5.5.1 of the WCGS Technical Specifications. These procedures have the changes made during the reporting period marked as required.

This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4204.

Sincerely, tr(/~ K.~}u_,

Cynthia R. Hafenstine CRH/rlt

Enclosure:

2017 Annual Radioactive Effluent Release Report - Report 41 cc: K. M. Kennedy (NRC), w/e B. K. Singal (NRC), w/e N .. H. Taylor (NRC), w/e :i;c4cf Senior Resident Inspector (NRC), w/e J \\_/(_

P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-883_1 An Equal Opportunity Employer M/F/HCNET

Enclosure to RA 18-0046 Wolf Creek Generating Station 2017 Annual Radioactive Effluent Release Report - Report 41 (297 pages including this page)

WOLF *cREEK NUCLEAR OPERATING CORPORATION 2017 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT Wolf Creek Generating Station Docket Number 50-482 Renewed Facility Operating License NPF-42 Report Number 41

WOLF CREEK NUCLEAR OPERATING CORPORATION 2017 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT This Annual Radioactive Effluent Release Report (ARERR) covers the operation of Wolf Creek Generating Station (WCGS) from January 1, 2017 through December 31, 2017. The ARERR includes a summary of the quantities of radioactive liquid and gaseous effluents and solid waste released from the unit in accordance with Technical Specification 5.6.3. The content of this ARERR is presented in the general format of Revision 1 of Regulatory Guide 1.21.

2017 Annual Radioactive Effluent Release Report

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R. SUPPLEMENTAL fiNFORMATION A. Regulatory Umits The Offsite Dose Calculation Manual (ODCM) describes the methodology and parameters used in the calculation of offsite doses due to radioactive liquid and gaseous effluents. The following are limits required by the ODCM:

1. GASEOUS EFFLUENTS

• The dose rate due to radioactive materials released in gaseous effluents from the site to areas at and beyond the site boundary shall be limited to the following:

For noble gases: a dose rate less than or equal to 500 mrem/yr to the whole body and a dose rate less than or equal to 3000 mrem/yr to the skin, and For lodine-131, lodine-133, tritium and all radionuclides in particulate form with half-lives greater than 8 days: Less than or equal to 1500 mrem/yr to any organ.

The air dose due to noble gases released in gaseous effluents to areas at and beyond the site boundary shall be limited to the following:

During any calendar quarter: Less than or equal to 5 mrads for gamma radiation and less than or equal to 10 mrads for beta radiation, and During any calendar year: Less than or equal to 10 mrads for gamma radiation and less than or equal to 20 mrads for beta radiation.

The dose to a member of the public from lodine-131, lodine-133, tritium and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents released to areas at and beyond the site boundary shall be limited to the following:

During any calendar quarter: Less than or equal to 7.5 mrems to any organ, and During any calendar year: Less than or equal to 15 mrems to any organ.

2. LIQUID EFFLUENTS The concentration of radioactive material released in liquid effluents to unrestricted areas shall be limited to 10 times the limit specified in 10 CFR 20, Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.00E-04 µCi/ml total activity.

2017 Annual Radioactive Effluent Release Report

The dose or dose commitment to a member of the public from radioactive materials in liquid effluents released to unrestricted areas shall be limited:

During any calendar quarter to less than or equal to 1.5 mrems to the whole body and to less than or equal to 5 mrems to any organ, and During any calendar year to less than or equal to 3 mrems to the whole body and to less than or equal to 10 mrems to any organ.

B. Effluent Concell'!ltration limit (ECl)

The concentration of radioactive material released in liquid effluents to unrestricted areas shall be limited to 10 times the limit specified in 10 CFR 20, Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained. noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.00E-04 µCi/ml total activity. The percent of ECL values are found in Appendix A, Table 4A.

C. Average Energy Average energy of fission and activation gaseous effluents is not applicable. See ODCM section 3.1 for the methodology used in determining the release rate limits from noble gas releases.

D. Measurements and Approx:nmataons of Total Radioactivity Measurements of total radioactivity were performed in accordance with the sampling and analysis requirements of Tables 2-1 and 3-1 of the ODCM (Enclosure I).

Gamma spectroscopy is used as the primary method in determining radionuclide composition and concentration of liquid and gaseous effluents. Liquid composites are sent off site for analysis of Sr-89, Sr-90, Fe-55 and Ni-63. Gaseous composites are also sent off site for Sr-89 and Sr-90 analysis. Liquid scintillation and scintillation alpha counters are used to measure tritium and gross alpha.

E. Batch Releases

1. LIQUID Number of batch releases-40 Total time period for batch release-4,594 minutes Maximum time period for a batch release-190 minutes Average time period for batch releases-114.9 minutes Minimum time period for a batch release-39 minutes Average stream flow during periods of release of effluent into a flowing stream-Not applicable 2017 Annual Radioactive Effluent Release Report

2. GASEOUS Number of batch releases-49 Total time period for batch release-3,409 minutes Maximum time period for a batch release-491 minutes Average time period for batch releases-69.6 minutes Minimum time period for a batch release-28 minutes F. Contiru.mous Releases

1. GASES Continuous gaseous release pathways include the Unit Vent an~ Radwaste Vent.

2. LIQUID Continuous liquid release pathways include Steam Generator Slowdown, Lime Sludge Pond, Turbine Building Sump and Waste Water Treatment G. Atmormal Releases There was no unplanned or uncontrolled release of radioactive material from the site boundary in 2017.

Update on CR 84942: On June 14, 2013,* approximately 100 gallons of contaminated water leaked from the Spent Fuel Pool into the Component Cooling Water A train (CCW). The primary gamma emitting isotope (Cs-137) was removed from CCW by ion exchange to below detection limits. By the end of 2014, the CCW tritium concentration equalized in both trains to 1.00E-03 uCi/ml and no gamma emitting isotopes were detected. A portion of the CCW system was drained through the normal discharge path during the 2015 and 2016 refueling outages. After partially draining and refilling the system, tritium values in the CCW are now approximately 3.00E-04 µCi/ml. The CCW system is scheduled to be drained and monitored via the normal discharge path during the 2018 refueling outage for system maintenance. The following CRs document the event and evaluation: 70420, 70451, 70546 and 72212.

H. GASEOUS EFFLUENTS An elevated release pathway does not exist at WCGS. All airborne releases are considered to be ground level releases. Appendix A, Table 1A contains the summation of all gaseous effluent discharges, while Table 1B shows the quarterly sums of curies discharged and is divided according to batch or continuous mode.

&U. LIQUID EFFLUENTS Summary information can be found in Appendix A, Tables 2A and 28. Table 2A contains the summation of all liquid effluent discharges, while Table 28 reports the quarterly sums of total curies released and is divided according to batch or continuous mode.

2017 Annual Radioactive Effluent Release Report

IV. SOlHl WASTE Appendix A, Table 3 contains information on shipments of solid waste and irradiated fuel transported from the site during the period.

V. RADIOLOGICAL IMPACT ON MAN No ODCM dose limits were exceeded in 2017.

Dose calculations are performed for the limiting age group i.e., adult age group for the liquid pathway and the child age group for gaseous effluent organ doses. All calculations were performed in accordance with the methodology and parameters in the ODCM. A conservative error of thirty percent has been estimated in the effluent data for liquid and gaseous dose.

A. Dose Due to Liquid Effluents The dose due to liquid effluents was calculated in accordance with the methodology and parameters in the ODCM and can be found in Appendix A, Tables 48 and 4C. Table 4C is included to show the correlation between curies released and the associated 9alculated maximum organ dose.

Wolf Creek ODCM methodology is used to calculate the maximum organ dose which assumes that an individual drinks the water and eats the fish from the discharge point.

ODCM section 2.2 organ dose limits are used.

B. Dose Due to Gaseous Effluents The dose due to gaseous effluents can be found in Appendix A, Tables 40 and 4E and is calculated in accordance with the methodology and parameters in the ODCM. Table 4E is included to show the correlation between curies released and the associated calculated maximum organ dose. The gaseous pathway dose determination is met by the ODCM methodology of assigning all gaseous pathways to a hypothetical individual residing at the highest annual X/Q and D/Q location, which assumes that an individual actually resides at the site boundary. This results in a conservative estimate of dose to a member of the public, rather than determining each pathway dose for each release condition. ODCM section 3.2.2 organ dose limits are used.

2017 Annual Radioactive Effluent Release Report UI

C. Dose to a Member of the Public from Activities Inside the Site Boundary Four activities by members of the public were considered in this evaluation. The dose calculated for the maximum exposed individual is as follows:

Total Dose

1. Personnel making deliveries to the plant 3.20E-01 mrem/yr

2. Workers at the William Allen White 6.88E-03 mrem/yr Building located outside the protected area boundary

3. Use of the access road south of the 3.28E-03 mrem/yr Radwaste Building

4. Public use of the cooling lake during 4.09E-02 mrem/yr times when fishing was allowed The plant delivery calculations were based on deliveries being made 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> per week for 50 weeks per year. The William Allen White Building occupancy was based on normal working hours of 2,000 per year. The usage factor for the access road south of the Radwaste Building was 25 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> per year. The dose to anglers on the lake was based upon 3,768 hours0.00889 days <br />0.213 hours <br />0.00127 weeks <br />2.92224e-4 months <br /> (12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> a day for 314 days, based on the number of days that the lake was open to anglers). The Submersion, Inhalation and Ground Plane pathway doses were added to derive the total dose. All calculations were performed in accordance with the methodology and parameters in the ODCM.

Vt METEOROLOGICAL DATA Appendix B documents WCGS meteorological data for wind speed, wind direction and atmospheric stability. The meteorological data supplied in the tables covers the period from January 1, 2017 through December 31, 2017, and indicates the number of hours at each wind speed and direction for each stability class. All gaseous releases at the WCGS are ground level releases.

WCGS met Regulatory Guide 1.23 requirement for data recovery for all instruments.

VU. ADDITIONAL INFORMATION A. Unplanned Releases There were no unplanned releases in 2017.

2017 Annual Radioactive Effluent Release Report O')

Bs ODCM There were no changes made to the ODCM in 2017. The ODCM is in the form of two separate procedures. They are AP 078-003 (Offsite Dose Calculation Manual) and AP 078-004 (Offsite Dose Calculation Manual-Radiological Environmental Monitoring Program). Both procedures are attached as enclosures.

C. Radwaste Treatment System Changes There were no major changes made to the Liquid, Solid or Gaseous Radwaste Systems in 2017 that alter the capacity or handling of radioactive wastes or differ in the method of treatment.

The sluice line that routes BL (Reactor Makeup) water through the selected vessel was replaced in 2017. This will improve the residual dose that remains from the resin left in the lines.

D. Arun.nal Land Use Census Changes Per the Annual Land Use Census, three changes were identified for the nearest occupied residence in each sector. Five changes were noted for the nearest garden producing broadleaf vegetation. There were no changes regarding milk sample locations. No locations were identified that milked animals for human consumption.

!E. Liquid Holdup or Gas Storage Tanks No limits were exceeded in 2017 for Technical Requirement 3.10.1 (Liquid Holdup Tanks) or Technical Surveillance Requirement 3.10.3.1 (Gas Storage Tanks).

f. FunctiomiUty of Effluent Monitoring Instrumentation Effluent monitoring instrumentation returned to functional status within specified time.

2017 Annual Radioactive Effluent Release Report

G. Missed samples CR 00110361 On January 9, 2017, SYS GT-300 was performed to commence_ a planned Unit Vent outage. When non-isokinetic conditions were reached, GTRE21 B was incorrectly placed out of service by Control Room staff. However, GTRE21 B should have remained functional upon the loss of isokinetic flow. With the belief that GTRE21 B was out of service, a channel check on the monitor was not performed as required by the ODCM.

The Control Room staff also failed to communicate the status of GTRE21 B to Chemistry, which resulted in a grab sample not being obtained for a period of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. System trends were reviewed and showed no indications of an abnormal release. The procedures were updated to define monitor status during performance of the surveillance and to clarify impact of isokinetic flow.

CR 00112928 On May 10, 2017, power was unexpectedly removed from the two gaseous effluent radiation monitors GHRE10A/B (Radwaste Building Vent) and GTRE21A/B (Unit Vent).

The loss of power was due to a scheduled performance of a first time work activity to replace the Radiation Monitoring System inverter. Impact of the work activity did not include input from Chemistry. Once notification was made, alternate sample carts were set up and placed in service to meet the continuous filter flow requirements of ODCM Table 3-2. Continuous filtration was not in place for approximately 83 minutes on the Unit Vent monitor and 143 minutes on the Radwaste Vent monitor as required by AP 078-003, Table 3-2 (1.b., 1.c., 3.b. & 3.c.). The same work performed in 2018 was a success.

H. NE! Groundwater Protecth::m Industry h-nitiative See Appendix C.

I. Other CR 00112547 During the final review of radioactive liquid release permit packet U1LB2017-016, it was found that a technician incorrectly identified an energy line, which resulted in omitting an isotope (Mn-54) from the release permit calculations as required by AP 078-003, Offsite Dose Calculation Manual. The error was not caught by the technician performing the 2nd review. The tank was discharged using setpo'ints more conservative than if Mn-54 had been included. The low setpoint used for the release was 5.28E-04 µCi/ml. The setpoint including Mn-54 would have been 7.56E-04 µCi/ml. The permit post release calculations were later corrected to include the Mn-54 activity of 3.24E-08 uCi/ml.

2017 Annual Radioactive Effluent Release Report co

CARBON-14 (CR 36059)

Regulation 10CFR50.36a requires nuclear power plants to report quantities of principal radionuclides in the annual radioactive effluent release report. In the early 1980s, the NRC decided that C-14 radionuclide would not be required to be reported because it would not make a significant contribution to dose. Since this time, technology has advanced both for effluent isotopic reduction and isotope detection and estimation. It is more likely the C-14 meets the definition of a principal radionuclide in accordance with the newly published Regulatory Guide 1.21 Revision 2 (June 2009).

The NRC allows the reporting of this isotope based on estimation methods. EPRI TR 1021106 developed an estimation method based on peer-reviewed research that incorporates parameters of Wolf Creek's reactor design to estimate the gross amount of C-14 produced annually. This value is fed into additional calculations, based on Regulatory Guide 1.109, Calculation of Annual Doses to Man From Routine Releases of Reactor Effluents For the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I, to provide an estimation of annual dose. Based on the 2010 theoretical calculations and assuming the maximum percentage of inorganic C-14 compounds (30%), Wolf Creek has estimated the annual release of C-14 to be 10.7 curies and to contribute maximum dose values of 1.30 mrem/yr child bone dose and 0.259 mrem/yr child total body. This is well below the 10CFR50, Appendix I, ALARA design objective of 15 mrem/yr. Additionally, this value is on par with the dose expected from naturally occurring radiocarbon.

2017 Annual Radioactive Effluent Release Report

Appendix A 2017 Annual Radioactive Effluent Release Report L

TABLE 1A:

GASEOUS EFFLUENTS-SUMMATION OF ALL RELEASES Unit Quarter 1 Quarter 2 Quarter 3 Quarter4 Est. Total Error,%

Fission & Activation Gases Total Release Ci 7.02E-02 8.72E-02 5.14E-01 2.76E+OO 3.00E+01 Average Release Rate µCi/sec 9.03E-03 1.11 E-02 6.47E-02 3.47E-01 for period Percent of ODCM limit  % 8.74E-04 8.32E-04 9.26E-04 2.30E-03 Iodines Total lodine-131 Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 3.00E+01 Average Release Rate µCi/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO for period Percent of ODCM limit  % O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Particulates Particulates with half- Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 3.00E+01 fives >8 days Average Release Rate µCi/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO for period Percent of ODCM limit  % O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Gross alpha radioactivity Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 3.00E+01 Tritium Total release Ci 4.93E+OO 1.11E+01 1.75E+01 8.54E+OO 3.00E+01 Average Release Rate µCi/sec 6.34E-01 1.41 E+OO 2.20E+OO 1.07E+OO for period Percent of ODCM limit  % 4.65E-02 L1 .04E-01 1.65E-01 8.06E-02

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2017 Annual Radioactive Effluent Release Report

TABLE 18:

GASEOUS EFFLUENTS-GROUND LEVEL RELEASES-BATCH MODE j Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Fission gases Argon-41 Ci 6.73E-02 6.32E-02 5.39E-02 7.30E-02 Xenon-133 Ci 2.88E-03 2.39E-02 1.16E-01 1.88E-01 Krypton-85 Ci O.OOE+OO O.OOE+OO O.OOE+OO 2.58E-01 Krypton-85m Ci <1.31E-03 <1.16E-03 <9.56E-04 <1.20E-03 Krypton-87 Ci <2.34E-03 <2.06E-03 <1.?0E-03 <2.14E-03 Krypton-88 Ci <5.32E-03 <4.68E-03 <3.87E-03 <4.86E-03 Xenon-133m Ci <5.64E-03 <4.96E-03 <4.10E-03 1.00E-04 Xenon-135 Ci <1.05E-03 <9.22E-04 <7.62E-04 <9.59E-04 Xenon-135m Ci <2.74E-02 <2.41E-02 <1.99E-02 <2.51E-02 Xenon-138 Ci <4.84E-02 <4.26E-02 <3.52E-02 <4.43E-02 Xenon-131m Ci O.OOE+OO O.OOE+OO O.OOE+OO 3.10E-03 Total for period* Ci 7.02E-02 8.72E-02 1.?0E-01 5.22E-01 Iodines lodine-131 Ci <7.98E-08 <7.02E-08 <5.BOE-08 <7.30E-08 lodine-133 Ci <7.98E-06 <7.02E-06 <5.BOE-06 <7.30E-06 Total for period* Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Particulates Strontium-89 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Strontium-90 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cesium-134 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cesium-137 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Manganese-54 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 lron-59 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cobalt-58 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cobalt-60 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Zinc-65 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Molybdenum-99 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cerium-141 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cerium-144 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Total for period* Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Tritium Ci 1.01E-01 2.79E-01 4.02E-01 1.48E-01 Gross Alpha Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07

• Less than values are not included in the summation for the total release values.

2017 Annual Radioactive Effluent Release Report

TABLE 18:

GASEOUS EFFLUENTS-GROUND LEVEL RELEASES -CONTINUOUS MODE j Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 I I I I I I Fission gases Argon-41 Ci <8.21E+OO <8.67E+OO <8.71E+OO <8.32E+OO Xenon-133 Ci <1.19E+01 <1.26E+01 3.44E-01 2.24E+OO Krypton-85m Ci <3.85E+OO <4.07E+OO <4.09E+OO <3.91E+OO Krypton-87 Ci <6.87E+OO <7.25E+OO <7.28E+OO <6.96E+OO Krypton-88 Ci <1.56E+01 <1.65E+01 <1.65E+01 <1.58E+01 Xenon-133m Ci <1.66E+01 <1.75E+01 <1.76E+01 <1.68E+01 Xenon-135 Ci <3.07E+OO <3.24E+OO <3.26E+OO <3.11E+OO Xenon-135m Ci <8.03E+01 <8.48E+01 <8.52E+01 <8.14E+01 Xenon-138 Ci <1.42E+02 <1.50E+02 <1.51 E+02 <1.44E+02 Total for period Ci O.OOE+OO O.OOE+OO 3.44E-01 2.24E+OO Iodines lodine-131 Ci <2.34E-04 <2.47E-04 <2.48E-04 <2.37E-04 lodine-133 Ci <2.34E-02 <2.47E-02 <2.48E-02 <2.37E-02 Total for period Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Particulates Strontium-89 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Strontium-90 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cesium-134 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cesium-137 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Manganese-54 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03

' lron-59 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cobalt-58 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cobalt-60 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Zinc-65 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Molybdenum-99 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cerium-141 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cerium-144 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Total for period Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO I Tritium I Ci I 4.83E+OO I 1.08E+01 I 1.71E+01 I 8.40E+OO I j Gross Alpha Ci <2.34E-03 I <2.47E-03 I <2.48E-03 I <2.37E-03 I I I

• Less than values are not included in the summation for the total release values.

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2017 Annual Radioactive Effluent Release Report w

TABLE 2A:

LIQUID EFFLUENTS-SUMMATION OF All RELEASES Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Est. Total Error,%

FISSION AND ACTIVATION PRODUCTS Total Release (not including Ci 2.22E-03 2.46E-03 9.65E-04 4.41E-04 3.00E+01 tritium, gases, alpha)

Average Diluted µCi/ 8.65E-12 9.08E-12 3.47E-12 1.62E-12 Concentration during period ml Percent of Applicable Limit  % 4.45E-02 4.92E-02 1.93E-02 8.82E-03 TRITIUM Total release Ci 1.421;:+01 4.45E+01 3.98E+02 5.16E+02 3.00E+01 Average Diluted µCi/ 5.53E-08 1.64E-07 1.43E-06 1.89E-06 Concentration during period ml Percent of Applicable Limit  % 5.53E-03 1.64E-02 1.43E-01 1.89E-01 DISSOLVED AND ENTRAINED GASES Total release Ci O.OOE+OO O.OOE+OO 3.12E-02 1.04E-01 3.00E+01 Average Diluted µCi/ O.OOE+OO O.OOE+OO 1.12E-10 3.81E-10 Concentration during period ml Percent of Applicable Limit  % O.OOE+OO O.OOE+OO 5.61 E-05 1.91E-04 GROSS ALPHA RADIOACTIVITY J Total Release Ci J O.OOE+OO J O.OOE+OO J O.OOE+OO J O.OOE+OO J 3.00E+01 J Volume of waste released L 9.34E+07 1.70E+08 9.70E+07 9.34E+07 3.00E+01 (prior to dilution)

Volume of dilution water used L 2.57E+11 2.71E+11 2.78E+11 2.73E+11 3.00E+01 during period 2017 Annual Radioactive Effluent Release Report

TABLE 2B: LIQUID EFFLUENTS- BATCH MODE I Nuclides Released Unit I Quarter 1 I Quarter 2 I Quarter 3 I Quarter 4 Fission & Activation Products Strontium-89 Ci <1.26E-05 <1.45E-05 <2.30E-05 <2.68E-05 Strontium-90 Ci <1.26E-05 <1.45E-05 <2.30E-05 <2.68E-05 Cesium-134 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Cesium-137 Ci 1.64E-05 5.45E-06 <2.30E-04 <2.68E-04 Cobalt-57 Ci 1.38E-05 1.01 E-05 3.12E-06 O.OOE+OO Cobalt-58 Ci 2.14E-03 9.15E-04 3.06E-04 1.01E-04 Cobalt-60 Ci 4.65E-05 4.94E-05 3.62E-05 2.43E-05 lron-55 Ci <2.52E-04 <2.89E-04. <4.59E-04 <5.35E-04 lron-59 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Zinc-65 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Manganese-54 Ci <1.26E-04 1.37E-06 <2.30E-04 <2.68E-04 Nickel-63 Ci <2.52E-04 1.13E-03 4.59E-04 3.16E-04 Antimony-125 Ci 1.12E-05 O.OOE+OO 1.60E-04 O.OOE+OO Telerium-125m Ci O.OOE+OO 3.50E-04 O.OOE+OO O.OOE+OO Molybdenum-99 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Cerium-141 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Cerium-144 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 lodine-131 Ci <2.52E-04 <2.89E-04 <4.59E-04 <5.35E-04 Total for period* Ci 2.22E-03 2.46E-03 9.65E-04 4.41E-04 Dissolved & Entrained Gases Xe-133 Ci <2.52E-03 <2.89E-03 2.68E-02 9.28E-02 Xe-133m Ci <2.52E-03 <2.89E-03 4.72E-05 5.04E-04 Xe-135 Ci <2.52E-03 <2.89E-03 <4.59E-03 9.22E-06 Xenon-131m Ci <2.52E-03 <2.89E-03 1.50E-03 2.62E-03 Krypton-85 Ci <2.52E-03 <2.89E-03 2.82E-03 7.98E-03 Total for period* Ci O.OOE+OO O.OOE+OO 3.12E-02 1.04E-01 Tritium Ci 1.26E+01 4.25E+01 3.97E+02 5.14E+02 Gross Alpha Ci <2.52E-05 <2.89E-05 <4.59E-05 <5.35E-05

• Less than values are not included in the summation for the total release values.

2017 Annual Radioactive Effluent Release Report

TABLE 28: LIQUID EFFLUENTS-CONTINUOUS MODE

\ Nuclides Released Unit * \ Quarter 1 \ Quarter 2 \ Quarter 3 \ Quarter 4 Fission & Activation Products Strontium-89 Ci <4.66E-03 <8.45E-03 <4.83E-03 <4.64E-03 Strontium-90 Ci <4.66E-03 <8.45E-03 <4.83E-03 <4.64E-03 Cesium-134 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cesium-137 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cobalt-58 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cobalt-60 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 lron-55 Ci <9.31 E-02 <1.69E-01 <9.65E-02 <9.28E-02 lron-59 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Zinc-65 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Manganese-54 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Nickel-63 Ci <9.31 E-02 <1.69E-01 <9.65E-02 <9.28E-02 Molybdenum-99 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cerium-141 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cerium-144 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 lodine-131 Ci <9.31E-02 <1.69E-01 <9.65E-02 <9.28E-02 Total for period* Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Dissolved & Entrained Gases None discharged Ci <9.31 E-01 I <1.69E+OO I <9.65E-01 I <9.28E-01 I Tritium Ci 1.62E+OO 1.96E+OO 1.28E+OO 1.77E+OO Gross Alpha Ci <9.31E-03 <1.69E-02 <9.65E-03 <9.28E-03

• Less than values are not included in the summation for the total release values.

2017 Annual Radioactive Effluent Release Report

TABLE 3:

SOLID WASTE AND IRRADIATED FUEL SHIPMENTS A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (NOT IRRADIATED FUEL)

Units 1-Year Est. Total

1. Type of Waste Period Error(%)

3*

a. Spent resins, filter sludges, evaporator bottoms, etc. m 1.73E+01 Ci 5.93E+OO 2.50E+01 3*

b. Dry compressible waste, contaminated equip., etc. m 2.92E+02 Ci 3.68E-01 2.50E+01 C. Irradiated components, control rods, etc. m3* O.OOE+OO Ci O.OOE+OO 3*

d. Other m O.OOE+OO Ci O.OOE+OO

• This is the volume sent offsite for volume reduction prior to disposal (waste volume).

2. Estimate of Major Nuclide Composition (by Type of Waste) [Nuclides listed with %

abundance greater than 10%]

a. Spent resins, filter sludges, evaporator bottoms, etc.

Nuclide  % Abundance Curies H-3 30.58 1.81 E+OO Fe-55 11.02 6.53E-01 Co-60 13.11 7.77E-01 Ni-63 37.82 2.24E+OO

b. Dry compressible waste, contaminated equipment, etc.

Nuclide  % Abundance Curies C0-60 37.21 1.37E-01 CS-137 57.89 2.13E-01

c. Irradiated components, control rods, etc. - None

d. Other - None 2017 Annual Radioactive Effluent Release Report

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 7 Truck Energy Solutions (Hittman Transport Services) Oak Ridge, TN (Bear Creek) 7 Truck Energy Solutions Kingston, TN (Hittman Transport Services)

(Gallaher Road Facility)

4. Class of Solid Waste

5. Type of Container

d. Not appimcabDe

6. Solidification Agent B. IRRADIATED FUEL SHIPMENTS (DISPOSITION)

No irradiated fuel shipments occurred during the 2017 period .

. 2017 Annual Radioactive Effluent Release Report

~ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -----

TABLE 4A: 2017 EFFLUENT CONCENTRATION LIMITS Average Diluted 10 CFR 20 Nuclides Curies Concentration EGL %EGL

(µCi/ml) (µCt!ml)

Tritium 9.72E+02 9.00E-07 1.00E-03 9.00E-02 Manganese-54 1.37E-06 1.27E-15 3.00E-05 4.23E-09 Cobalt-57 2.70E-05 2.50E-14 6.00E-05 4.17E-08 Cobalt-58 3.46E-03 3.21E-12 2.00E-05 1.60E-05 Coba/t-60 1.56E-04 1.45E-13 3.00E-06 4.83E-06 Nickel-63 1.90E-03 1.76E-12 1.00E-04 1.76E-06 Antimony-125 1.71 E-04 1.59E-13 3.00E-05 5.29E-07 Tellurium-125m 3.50E-04 3.24E-13 2.00E-05 1.62E-06 Cesium-137 2.18E-05 2.02E-14 1.00E-06 2.02E-06 Xenon-133m 5.51E-04 5.11E-13 2.00E-04 2.55E-07 Xenon-133 1.20E-01 1.11E-10 2.00E-04 5.54E-05 Xenon-135 9.22E-06 8.54E-15 2.00E-04 4.27E-09 Krypton-85 1.08E-02 1.00E-11 2.00E-04 5.00E-06 Xenon-131m 4.12E-03 3.82E-12 2.00E-04 1.91 E-06 2017 Annual Radioactive Effluent Release Report

TABLE 4B: 2017 UQlHD CUMULATIVE DOSE

SUMMARY

ODCM ODCM Limit  % of Limit QUARTER 1 OF 2017 {MREM) Cacua I I t ed Dose (mrem )

Total Dose for Bone 5.23E-05 5.00E+OO 1.05E-03 Total Dose for Liver 1.27E-03 5.00E+OO 2.54E-02 Total Dose for Total Body 1.25E-03 1.SOE+OO 8.33E-02 Total Dose for Thyroid 1.20E-03 5.00E+OO 2.40E-02 Total Dose for Kidney 1.22E-03 5.00E+OO 2.44E-02 Total Dose for Lung 1.20E-03 5.00E+OO 2.40E-02 Total Dose for GI-LLI 1.26E-03 5.00E+OO 2.52E-02 QUARTER 2 OF 2017 (MREM)

Total Dose for Bone 4.14E-04 5.00E+OO 8.28E-03 Total Dose for Liver 4.22E-02 5.00E+OO 8.44E-01 Total Dose for Total Body 4.22E-02 1.50E+OO 2.81E+OO Total Dose for Thyroid 4.21 E-02 5.00E+OO 8.42E-01 Total Dose for Kidney 4.22E-02 5.00E+OO 8.44E-01 Total Dose for Lung 4.21 E-02 5.00E+OO 8.42E-01 Total Dose for GI-LLI 4.22E-02 5.00E+OO 8.44E-01 QUARTER 3 OF 2017 (MREM)

Total Dose for Bone 1.58E-04 5.00E+OO 3.16E-03 Total Dose for Liver 3.54E-02 5.00E+OO 7.0BE-01 Total Dose for Total Body 3.54E-02 1.50E+OO 2.36E+OO Total Dose for Thyroid 3.54E-02 5.00E+OO 7.0BE-01 Total Dose for Kidney 3.54E-02 5.00E+OO 7.0BE-01 Total Dose for Lung '

3.54E-02 5.00E+OO 7.0BE-01 Total Dose for GI-LLI 3.54E-02 5.00E+OO 7.0BE-01 QUARTER 4 OF 2017 (MREM)

Total Dose for Bone 1.11 E-04 5.00E+OO 2.22E-03 Total Dose for Liver 4.82E-02 5.00E+OO 9.64E-01 Total Dose for Total Body 4.82E-02 1.50E+OO 3.21E+OO Total Dose for Thyroid 4.82E-02 5.00E+OO 9.64E-01 Total Dose for Kidney 4.82E-02 5.00E+OO 9.64E-01 Total Dose for Lung 4.82E-02 5.00E+OO 9.64E-01 Total Dose for GI-LLI 4.82E-02 5.00E+OO 9.64E-01 TOTALS FOR 2017 (MREM)

Total Dose for Bone 7.35E-04 1.00E+01 7.35E-03 Total Dose for Liver 1.27E-01 1.00E+01 1.27E+OO Total Dose for Total Body 1.27E-01 3.00E+OO 4.23E+OO Total Dose for Thyroid 1.27E-01 1.00E+01 1.27E+OO Total Dose for Kidney 1.27E-01 1.00E+01 1.27E+OO Total Dose for Lung 1.27E-01 1.00E+01 1.27E+OO Total Dose for GI-LLI 1.27E-01 1.00E+01 1.27E+OO 2017 Annual Radioactive Effluent Release Report

TABLE 4C:

LIQUID CUMULATIVE DOSE

SUMMARY

Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Fission & Activation Products*

Total Release (Ci) 2.22E-03 2.46E-03 9.65E:-04 4.41E-04 6.09E-03 Maximum Organ Dose (mrem) 7.48E-05 4.14E-04 1.58E-04 1.11 E-04 7.35E-04 Organ Dose Limit (mrem) 5.00E+OO 5.00E+OO 5.00E+OO 5.00E+OO 1.00E+01 Percent of Limit 1.50E-03 8.27E-03 3.16E-03 2.22E-03 7.35E-03 Tritium Total Release (Ci) 1.42E+01 4.45E+01 3.98E+02 5.16E+02 9.72E+02 Maximum Organ Dose (mrem) 1.20E-03 4.21 E-02 3.54E-02 4.82E-02 1.27E-01 Organ Dose Limit (mrem) 5.00E+OO 5.00E+OO 5.00E+OO 5.00E+OO 1.00E+01 Percent of Limit 2.39E-02 8.43E-01 7.08E-01 9.65E-01 1.27E+OO Dissolved & Entrained Gases I Total Release (Ci) I O.OOE+OO I O.OOE+OO I 3.12E-02 11.04E-01 I 1.35E-01 Gross Alpha Radioactivity I Total Release (Ci) I O.OOE+OO I O.OOE+OO I O.OOE+OO I O.OOE+OO I O.OOE+OO I

• Does not include H-3, gases or alpha 2017 Annual Radioactive Effluent Release Report

TABLE 4D: 2017 GASEOUS CUMULATIVE DOSE

SUMMARY

ODCM ODCM Limit % of Limit QUARTER 1 OF 2017 (MREM) Cacu I Iat e d Dose ( mrem )

Total Dose for Bone O.OOE+OO 7.50E+OO O.OOE+OO Total Dose for Liver 3.49E-03 7.50E+OO 4.65E-02 Total Dose for Total Body 3.49E-03 7.50E+OO 4.65E-02 Total Dose for Thyroid 3.49E-03 7.50E+OO 4.65E-02 Total Dose for Kidney 3.49E-03 7.50E+OO 4.65E-02 Total Dose for Lung 3.49E-03 7.SOE+OO 4.65E-02 Total Dose for GI-LLI 3.49E-03 7.50E+OO 4.65E-02 QUARTER 2 OF 2017 (MREM)

Total Dose for Bone O.OOE+OO 7.50E+OO O.OOE+OO Total Dose for Liver 7.84E-03 7.50E+OO 1.05E-01 Total Dose for Total Body 7.84E-03 7.50E+OO 1.05E-01 Total Dose for Thyroid 7.84E-03 7.50E+OO 1.05E-01 Total Dose for Kidney 7.84E-03 7.SOE+OO 1.05E-01 Total Dose for Lung 7.84E-03 7.SOE+OO 1.05E-01 Total Dose for GI-LLI 7.84E-03 7.50E+OO 1.05E-01 QUARTER 3 OF 2017 (MREM)

Total Dose for Bone O.OOE+OO 7.50E+OO O.OOE+OO Total Dose for Liver 1.24E-02 7.50E+OO 1.65E-01 Total Dose for Total Body 1.24E-02 7.50E+OO 1.65E-01 Total Dose for Thyroid 1.24E-02 7.50E+OO 1.65E-01 Total Dose for Kidney 1.24E-02 7.SOE+OO 1.65E-01 Total Dose for Lung 1.24E-02 7.50E+OO 1.65E-01 Total Dose for GI-LLI 1.24E-02 7.50E+OO 1.65E-01 QUARTER 4 OF 2017 (MREM}

Total Dose for Bone O.OOE+OO 7.50E+OO O.OOE+OO Total Dose for Liver 6.04E-03 7.50E+OO 8.05E-02 Total Dose for Total Body 6.04E-03 7.SOE+OO 8.05E-02 Total Dose for Thyroid 6.04E-03 7.SOE+OO 8.05E-02 Total Dose for Kidney 6.04E-03 7.SOE+OO 8.05E-02 Total Dose for Lung 6.04E-03 7.SOE+OO 8.05E-02 Total Dose for GI-LLI 6.04E-03 7.50E+OO 8.05E-02 TOTALS FOR 2017 (MREM)

Total Dose for Bone O.OOE+OO 1.50E+01 O.OOE+OO Total Dose for Liver 2.97E-02 1.50E+01 1.98E-01 Total Dose for Total Body 2.97E-02 1.50E+01 1.98E-01 Total Dose for Thyroid 2.97E-02 1.50E+01 1.98E-01 Total Dose for Kidney 2.97E-02 1.50E+01 1.98E-01 Total Dose for Lung 2.97E-02 1.50E+01 1.98E-01 Total Dose for GI-LLI 2.97E-02 1.50E+01 1.98E-01 2017 Annual Radioactive Effluent Release Report

TABLE 4E: 2017 GASEOUS CUMULATIVE DOSE

SUMMARY

I Quarter 1 I Quarter 2 I Quarter 3 I Quarter 4 I Total Fission & Activation Gases Total Release (Ci) 7.02E-02 8.72E-02 5.14E-01 2.76E+OO 3.43E+OO Total Gamma Air Dose (mrad) 4.37E-05 4.16E-05 4.63E-05 1.0?E-04 2.39E-04 Gamma Air Dose Limit (mrad) 5.00E+OO 5.00E+OO 5.00E+OO 5.00E+OO 1.00E+01 Percent of Gamma Air Dose Limit 8.74E-04 8.32E-04 9.26E-04 2.15E-03 2.39E-03 Total Beta Air Dose (mrad) 1.56E-05 1.62E-05 4.60E-05 2.30E-04 3.08E-04 Beta Air Dose Limit (mrad) 1.00E+01 1.00E+01 1.00E+01 1.00E+01 2.00E+01 Percent of Beta Air Dose Limit 1.56E-04 1.62E-04 4.60E-04 2.30E-03 1.54E-03 Particulates Total Particulates (Ci) O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Maximum Organ Dose (mrem) O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Organ Dose Limit (mrem) 7.50E+OO 7.50E+OO 7.50E+OO 7.50E+OO 1.50E+01 Percent of Limit O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Tritium Total Release (Ci) 4.93E+OO 1.11E+01 1.75E+01 8.54E+OO 4.20E+01 Maximum Organ Dose (mrem) 3.49E-03 7.84E-03 1.24E-02 6.04E-03 2.97E-02 Organ Dose Limit (mrem) 7.50E+OO 7.50E+OO 7.50E+OO 7.50E+OO 1.50E+01 Percent of Limit 4.65E-02 1.04E-01 1.65E-01 8.06E-02 1.98E-01 Iodine Total Release (Ci) O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Maximum Organ Dose (mrem) O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Organ Dose Limit (mrem) 7.50E+OO 7.50E+OO 7.50E+OO 7.50E+OO 1.50E+01 Percent of Limit O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 2017 Annual Radioactive Effluent Release Report

CALCULATIONS:

Gases:

1. The percent of ODCM limit for fission and activation gases is calculated using the following methodology: (The larger value calculated between Gamma and Beta air dose is listed as the

% of ODCM Limit)

(Quarterly Total Beta Airdose)(lOO)

% of ODCM Limit= - - - - - -- -m-r_a_d_ _ _ __

10 OR (Quarterly Total Gamma Airdose)(lOO)

% of ODCM Limit= - - - - - --m-r-ad _ _ _ _ __

5

2. The percent of ODCM limit for iodine is calculated using the following methodology:

(Total Curies of Iodine - 131)(100)

%ofODCMLimit= lC .

urze

3. The percent of ODCM limit for particulates is calculated using the following methodology:

(Highest Organ Dose due to Particulates)(lOO)

% of ODCM Limit= - - - - - - - - - - - - - - - - -

7.5 mrem

4. The percent of ODCM limit for tritium is calculated using the following methodology (this type of methodology is used since the Wolf Creek ODCM ties release limits to doses rather than curie release rates:

• (Highest Organ Dose due to H - 3)(100)

% of ODCM Limit= S 7 . mrem

5. Less than values for Noble Gases are calculated using the Lower Limit of Detection (LLD) values obtained at WCGS multiplied by the volume of air discharged during the respective quarter. For the Halogens and Particulates, the ODCM LLD values are used.

Liquids:

1. The Applicable Limit for fission and activation products at WCGS is 5 curies per year (reference 10CFRSO, Appendix I, paragraph A.2). The percent of Applicable Limit is derived by the following:

• (Total Release Ci)(lOO)

% of Applicable Limit= Ci 5

2. The percent of Applicable Limit for tritium is derived by the following formula:

• * . _ (Average Diluted Concentration)(lOO) 0 Vo of Applicable Limit - (ECL*)

• The EGL can be found in 10CFR20, Appendix 8, Table 2 2017 Annual Radioactive Effluent Release Report

3. The percent of Applicable Limit for dissolved and entrained gases is derived by the following formula:

• *

• _ (Average Diluted Concentration)(lOO) 0 Vo of Applicable Limit - (Z.OOE _ 04 *)

• From ODCM, section 2.1

4. Less than values are calculated using the Lower Limit of Detection (LLD) values listed in Table 2-1 of the ODCM multiplied by the volume of waste discharged during the respective quarter.

The less than values are not included in the summation for the total release values.

I\)

2017 Annual Radioactive Effluent Release Report (J1

Appendix B Meteorological Data 2017 Annual Radioactive Effluent Release Report

HOURS AT EACH WIND SPEED AND DIRECTION This section documents WCGS meteorological data for wind speed, wind direction, and atmospheric stability.

The meteorological data supplied in the following tables covers the period from January 1, 2017, through December 31, 2017, and indicates the number of hours at each wind speed and direction for each stability class. All gaseous releases at the WCGS are ground level releases.

Wolf Creek Generating Station met Regulatory Guide 1.23 requirement for data recovery, for all instruments. The instruments, both at 10 and 60 meters, met or exceeded a 90% meteorological data recovery for 2017.

2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: A Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0.00 0.75 5.75 12.75 2.75 0.00 22.00 NNE 0.50 3.25 18.50 7.75 1.25 0.00 31.25 NE 1.75 12.50 19.00 3.25 0.00 0.00 36.50 ENE 0.25 6.00 19.50 4.25 0.50 0.00 30.50 E 0.25 5.50 11.75 0.75 0.00 0.00 18.25 ESE 0.25 4.50 10.50 0.00 0.00 0.00 15.25 SE 0.25 5.75 22.50 7.75 0.00 0.00 36.25 SSE 0.25 3.50 56.25 45.50 15.25 1.00 121.75 s 1.25 1.00 41.25 102.00 57.25 17.25 220.00 SSW 1.00 0.75 22.75 31.75 10.75 1.50 68.50 SW 0.25 1.75 15.00 3.50 0.75 0.25 21.50 WSW 0.50 2.25 7.75 5.50 0.50 0.00 16.50 w 0.25 7.00 12.75 20.50 2.25 0.50 43.25 WNW 0.00 6.00 10.75 12.50 12.50 1.00 42.75 NW 0.00 4.50 11.50 12.75 7.25 0.50 36.50 NNW 0.25 2.50 13.50 15.25 3.75 0.00 35.25 Total 7.00 67.50 299.00 285.75 114.75 22.00 796.00 Hours of Calm (<1.0 mph): 14.75 N

2017 Annual Radioactive Effluent Release Report co

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: B Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 .13-18 19-24 > 24 Total N 0.00 3.00 9.25 6.50 4.00 0.25 23.00 NNE 0.50 8.75 18.00 8.00 0.25 0.00 35.50 NE 1.00 15.25 9.25 1.75 0.00 0.00 27.25 ENE 0.50 13.25 11.25 2.50 0.25 0.00 27.75 E 0.50 12.25 6.25 0.75 0.00 0.00 19.75 ESE 0.75 11.50 6.50 0.50 0.25 0.00 19.50 SE 0.25 10.00 12.50 2.25 0.00 0.00 25.00 SSE 1.75 17.25 28.50 8.50 2.50 0.00 58.50 s 0.50 6.75 24.50 20.00 7.25 2.25 61.25 SSW 1.00 3.75 19.00 15.00 5.00 1.25 45.00 SW 0.25 7.75 8.50 1.50 1.00 0.25 19.25 WSW 1.75 9.25 3.25 1.25 0.25 0.00 15.75 w 0.75 6.00 6.00 1.75 0.25 0.00 14.75 WNW 2.00 5.75 6.75 5.75 4.50 0.00 24.75 NW 0.75 7.00 18.75 13.25 4.50 0.00 44.25 NNW 0.00 2.50 15.75 13.50 7.50 0.25 39.50 Total 12.25 140.00 204.00 102.75 37.50 4.25 500.75 Hours of Calm (<1.0 mph): 3.25 2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: C Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0.00 1.75 10.25 9.75 2.00 0.00 23.75 NNE 2.75 15.50 27.25 6.00 0.25 0.00 51.75 NE 3.00 22.00 4.50 3.50 0.00 0.00 33.00 ENE 2.75 17.50 .9.75

• 0.50 0.00 0.00 30.50 E 2.00 17.75 4.50 2.00 0.00 0.00 26.25 ESE 2.00 15.50 5.25 0.25 0.00 0.00 23.00 SE 1.50 14.00 11.50 1.50 0.00 0.00 28.50 SSE 1.25 36.25 21.75 9.75 4.75 0.00 73.75 s 2.50 14.00 29.00 18.00 10.75 3.75 78.00 SSW 2.75 8.00 21.50 16.00 10.50 4.00 62.75 SW 3.00 10.50 8.00 1.25 0.25 0.00 23.00 WSW 2.75 11.00 5.50 0.25 0.25 0.00 19.75 w 1.00 7.75 4.75 3.00 1.25 0.00 17.75 WNW 1.75 5.00 7.00 5.25 5.00 0.75 24.75 NW 1.50 8.25 15.75 14.50 7.50 0.50 48.00 NNW 0.25 5.25 20.50 10.50 6.25 1.75 44.50 Total 30.75 210.00 206.75 102.00 48.75 10.75 609.00 Hours of Calm (<1.0 mph): 4.25 w

2017 Annual Radioactive Effluent Release Report 0

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: D Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2.00 29.25 72.75 61.75 12.75 0.50 179.25 NNE 18.75 124.25 145.25 36.25 1.25 0.00 325.75 NE 19.75 110.50 66.50 10.25 0.25 0.00 207.25 ENE 12.00 69.25 71:75 14.00 0.75 0.00 167.75 E 11.75 47.75 28.25 4.00 0.00 0.00 91.75 ESE 17.25 52.75 31.50 4.75 0.50 0.00 106.75 SE 11.00 72.00 64.75 9.00 0.00 0.00 156.75 SSE 12.75 92.50 138.75 *81.15 19.50 0.75 352.00 s 8.75 74.75 154.25 141.25 69.75 35.25 484.00 SSW 6.75 55.75 94.25 81.00 26.00 72.00 335.75 SW 10.50 50.00 21.25 5.25 2.00 0.25 89.25 WSW 5.75 19.00 14.25 7.50 2.75 0.00 49.25 w 5.75 21.00 27.50 16.50 2.75 0.50 74.00 WNW 3.00 15.50 48.75 40.50 7.25 1.25 116.25 NW 4.00 29.25 125.50 72.75 17.50 5.25 254.25 NNW 3.50 37.75 104.00 92.75 35.75 8.25 282.00 Total 153.25 901.25 1209.25 685.25 198.75 124.00 3272.00 Hours of Calm (<1.0 mph): 32.75 2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: E Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7.00 36.00 45.75 13.00 0.00 0.00 101.75 NNE 22.00 56.00 33.75 8.25 0.00 0.00 120.00 NE 27.50 47.00 22.50 1.75 0.00 0.00 98.75 ENE 16.00 38.00 25.25 2.00 0.00 0.00 81.25 E 26.25 36.50 14.50 1.75 0.00 0.00 79.00 ESE 23.00 77.25 18.75 2.00 0.00 0.00 121.00 SE 13.00 116.75 56.25 7.50 0.25 0.00 193.75 SSE 7.50 124.25 187.75 73.25 12.25 0.25 405.25 s 6.50 62.75 143.25 82.00 46.00 18.00 358.50 SSW 11.75 45.00 85.00 43.75 6.00 1.00 192.50 SW 15.00 44.25 12.25 3.00 0.25 0.00 74.75 WSW 4.75 20.50 17.25 2.25 0.25 0.00 45.00 w 1.50 25.50 20.75 1.00 0.50 0.25 49.50 WNW 3.25 11.25 17.00 1.00 0.50 0.25 33.25 NW 4.50 28.25 34.25 4.00 0.50 0.75 72.25 NNW 10.00 61.25 55.75 14.25 2.50 0.25 144.00 Total 199.50 830.50 790.00 260.75 69.00 20.75 2170.50 Hours of Calm (<1.0 mph): 42.75 2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: F Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7.75 22.00 4.75 0.00 0.00 0.00 34.50 NNE 25.50 48.75 2.25 0.25 0.00 0.00 76.75 NE 30.50 20.25 1.00 0.00 0.00 0.00 51.75 ENE 15.25 44.00 1.75 0.25 0.00 0.00 61.25 E 24.75 45.00 4.00 0.00 0.00 0.00 73.75 ESE 20.50 72.25 1.75 0.00 0.00 0.00 94.50 SE 16.25 69.00 4.00 0.00 0.00 0.00 89.25 SSE 10.50 54.00 19.00 2.25 0.00 0.00 85.75 s 5.50 27.00 16.00 4.75 0.50 0.00 53.75 SSW 7.50 14.75 7.00 0.25 0.50 0.00 30.00 SW 7.00 16.00 2.50 0.50 0.00 0.00 26.00 WSW 5.75 9.50 1.50 0.50 0.00 0.00 17.25 w 1.50 5.50 1.00 0.25 0.25 0.00 8.50 WNW 2.00 1.25 0.75 0.50 0.00 0.00 4.50 NW 6.25 11.25 1.25 0.25 0.00 0.00 19.00 NNW 9.00 44.00 8.25 0.50 0.00 0.00 61.75 Total 195.50 504.50 76.75 10.25 1.25 0.00 788.25 Hours of Calm (<1.0 mph): 2.50 2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: G Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7.00 19.25 0.50 0.00 0.00 0.00 26.75 NNE 67.00 53.50 1.25 0.00 0.00 0.00 121.75 NE 25.50 22.00 0.25 0.50 0.00 0.00 48.25 ENE 12.50 27.50 2.00 0.50 0.00 0.00 42.50 E 23.25 27.50 0.25 0.00 0.00 0.00 51.00 ESE 19.50 55.75 1.00 0.00 0.00 0.00 76.25 SE 8.25 30.00 0.25 0.00 0.00 0.00 38.50 SSE 3.25 15.75 0.25 0.00 0.00 0.00 19.25 s 2.50 5.75 3.00 0.25 0.00 0.00 11.50 SSW 2.00 2.25 0.75 0.00 0.00 0.00 5.00 SW 3.25 4.75 0.25 0.00 0.00 0.00 8.25 WSW 4.25 2.25 0.25 0.00 0.00 0.00 6.75 w 2.00 1.50 0.00 0.00 0.00 0.00 3.50 WNW 2.00 0.75 0.00 0.00 0.00 0.00 2.75 NW 4.00 5.25 0.00 0.00 0.00 0.00 9.25 NNW 15.25 27.25 2.25 0.00 0.00 0.00 44.75 Total 201.50 301.00 12.25 1.25 0.00 0.00 516.00 Hours of Calm {<1.0 mph): 2.25 w

2017 Annual Radioactive Effluent Release Report ~

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: ALL Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 23.75 112.00 149.00 103.75 21.50 0.75 410.75 NNE 137.00 310.00 246.25 66.50 3.00 0.00 762.75 NE 109.00 249.50 123.00 21.00 0.25 0.00 502.75 ENE 59.25 215.50 141.25 24.00 1.50 0.00 441.50 E 88.75 192.25 69.50 9.25 0.00 0.00 359.75 ESE 83.25 289.50 75.25 7.50 0.75 0.00 456.25 SE 50.50 317.50 171.75 28.00 0.25 0.00 568.00 SSE 37.25 343.50 452.25 227.00 54.25 2.00 1116.25 s 27.50 192.00 411.25 368.25 191.50 76.50 1267.00 SSW 32.75 130.25 250.25 187.75 58.75 79.75 739.50 SW 39.25 135.00 67.75 15.00 4.25 0.75 262.00 WSW 25.50 73.75 49.75 17.25 4.00 0.00 170.25 w 12.75 74.25 72.75 43.00 7.25 1.25 211.25 WNW 14.00 45.50 91.00 65.50 29.75 3.25 249.00 NW 21.00 93.75 207.00 117.50 37.25 7.00 483.50 NNW 38.25 180.50 220.00 146.75 55.75 10.50 651.75 Total 799.75 2954.75 2798.00 1448.00 470.00 181. 75 8652.25 Hours of Calm (<1.0 mph): 102.50 Maximum Hours of invalid Data: 718.50 w

u, 2017 Annual Radioactive Effluent Release Report

Appell'lldax c ONSITE GROUNDWATER PROTECTION PROGRAM MONITORING 2017 Annual Radioactive Effluent Release Report

Objective The objective of onsite groundwater protection program monitoring is to ensure timely detection of inadvertent radiological releases to ground water. At the Wolf Creek Generating Station, some background tritium influences from lake water reuse are normal and expected.

The onsite groundwater protection program monitoring sample results are being reported in the Radioactive Effluent Release Report per guidance received in association with the Nuclear Energy Institute (NEI) Groundwater Protection Industry Initiative. The following information is also being reported in association with the NEI Groundwater Protection Industry Initiative:

1. Describe any onsite licensed radioactive materials releases or spills that were voluntarily communicated to State/Local officials during the calendar year. - None

2. Describe any onsite groundwater sample results that exceeded the reporting thresholds that were voluntarily communicated to State/Local officials during the calendar year. - None There were no radioactive materials releases, spills, or reporting level exceedances reported to State/Local officials during 2017.

Onsite Groundwater Protection Program Monitoring Description In March of 2006, Wolf Creek Generating Station (WCGS) established an onsite groundwater protection monitoring program. During 2008, .thirteen monitoring wells were added to the onsite groundwater protection monitoring program. The onsite groundwater protection program monitoring is implemented via procedure Al 07-007, Onsite Groundwater Protection Program Monitoring. The onsite groundwater samples were collected by the WCGS Environmental Management group and were analyzed by Environmental, Inc., Midwest Laboratory. Onsite groundwater samples were collected quarterly when available and were analyzed by gamma isotopic analysis, radiochemical analysis for 1-131 and tritium analysis. The vendor lab (Environmental, Inc., Midwest Laboratory) participated in an interlaboratory comparison program. The following tables describe the sample locations, the lower limits of detection and the reporting levels for radioactivity detected.

2017 Annual Radioactive Effluent Release Report

Sample Location Sample Location Description AUX Dewatering Well located near the Auxiliary Building, on East Side EASTESW-W Essential Service Water Dewatering Well, East Group, West well, located southeast of the reactor MW-01A Monitoring Well, shallow depth, located northeast of the reactor ( control sample location)

MW-01B Monitoring Well, mid-range depth, located northeast of the reactor (control sample location)

MW-01C Monitoring Well, deep depth, located northeast of the reactor (control sample location)

MW-02A Monitoring Well, shallow depth, located northwest of the reactor MW-02B Monitoring Well, mid-range depth, located northwest of the reactor MW-03A Monitoring Well, shallow depth, located southwest of the reactor MW-03B Monitoring Well, mid-range depth, located southwest of the reactor MW-03C Monitoring Well, deep depth, located southwest of the reactor MW-05C Monitoring Well, deep depth, located south of the reactor MW-11A Monitoring Well, shallow depth, located southwest of the reactor MW-11B Monitoring Well, mid-range depth, located southwest of the reactor MW-12A Monitoring Well, shallow depth, located south of the reactor MW-12B Monitoring Well, mid-range depth, located south of the reactor WESTESW-W Essential Service Water Dewatering Well, West Group, West well, located south of the reactor Onsite Groundwater Lower Limits of Detection Analysis (pCi/L) Analysis (pCi/L)

H-3 2,000 Zr-Nb-95 15 Mn-54 15 - 1-131 1 Co-58 15 Cs-134 15 Fe-59 30 Cs-137 18 Co-60 15 Ba-La-140 15 Zn-65 30 Reporting Levels for Radioactivity Detected in Onsite Groundwater Analysis (pCi/L) Analysis (pCi/L)

H-3 20,000 Zr-Nb-95 400 Mn-54 1,000 1-131 2 Co-58 1,000 Cs-134 30 Fe-59 400 Cs-137 50 Co-60 300 Ba-La-140 200 Zn-65 300 w

2017 Annual Radioactive Effluent Release Report co

Discussion of Results Low levels of tritium were detected in an Essential Service Water dewatering well (WEST ESW-W) and in the dewatering well located near the Auxiliary Building (AUX), all within areas of backfill during plant construction. This has been attributed to the Plant's reuse of tritiated lake water and is consistent with gaseous tritium deposition during normal operation. Lake water is used for plant cooling, which includes essential service water, and in the Fire Protection System.

The sample with the highest level of tritium detected (1,316 +/- 130 pCi/L) was collected on 02-13-17 from the WEST ESW-W location. The measured tritium levels are significantly lower than the tritium levels routinely detected in surface water collected from Coffey County Lake (2017 range was 7,382 to 11,221 pCi/L).

The tritium activity was the only activity detected in the onsite groundwater samples. Lower limits of detection were met and sample analysis results were below the applicable reporting levels.

Subsurface Water Due to Industry Operating Experience, the Wolf Creek Generating Station started collecting and analyzing subsurface water during 2010. Subsurface water monitoring is a portion of the Groundwater Protection Program and is implemented via procedure Al 07-007, Onsite Groundwater Protection Program Monitoring. The definitions for subsurface water include:

1. Water that is encountered below grade while excavating, trenching, or drilling outside of the Radiologically Controlled Area and within the area displayed in Figure 1 (of Al 07-007). This excludes recent rainfall build-up in open excavation trenches.

2. Water that is encountered below grade or water that needs to be removed that is outside of a building, outside of the Radiologically Controlled Area and within the area displayed in Figure 1 (of Al 07-007). Examples include electrical vaults, piping vaults, valve pits, manholes, concrete pits, etc. Excludes removing water from powerblock sumps, sanitary sewers, spill containment berms or from within buildings.

The subsurface water samples were analyzed by the WCGS Chemistry Laboratory and the results were reviewed by Environmental Management. The subsurface water samples were analyzed for tritium. The following table identifies the sample dates, sample locations, and the analysis results.

w 2017 Annual Radioactive Effluent Release Report c.o

Date Location Description Tritium (pCi/L) 01/19/17 Anode A-3 (Northwest side of Turbine Building) <2,034 01/30/17 CW-1 (1 CW0006C) Manhole North of the Turbine Building 13,140 02/23/17 EMH138 Electrical Manhole West of Water Hammer Tower <2,262 03/01/17 EMH152 Electrical Manhole East of the Turbine Building 4,270 03/16/17 EMH 119 Electrical Manhole NW of Turbine Building <2,099 03/16/17 EMH120 Electrical Manhole NE of Turbine Building <2,202 03/16/17 EMH125 Electrical Manhole East of Turbine Building <2,307 03/16/17 EMH104 Electrical Manhole West of Shop Building <2,217 04/03/17 Dewatering Well #5 - West of Hot Machine Shop (1 DWV005) 1,660 04/03/17 EMH 152 Electrical Manhole East of the Turbine Building <1,706 04/10/17 EMH138 Electrical Manhole West of Water Hammer Tower 2,728 04/12/17 EMH 125 Electrical Manhole East of Turbine Building <1,728 04/12/17 EMH 152 Electrical Manhole East of the Turbine Building <2, 137 04/18/17 Dewatering Well #1 - East of the Turbine Building 1,875 04/20/17 EMH 125 Electrical Manhole East of the Turbine Building <1,971 04/20/17 EMH 152 Electrical Manhole East of the Turbine Building 2,964 04/24/17 EMH125 Electrical Manhole East of the Turbine Building 2,144 04/24/17 EMH 152 Electrical Manhole East of the Turbine Building 3,509 04/24/17 Dewatering Well #2 - East of the Turbine Building <1,974 04/24/17 Dewatering Well #3 - West of the Turbine Building <2,081 04/24/17 Dewatering Well #7 - Southwest of the Communication Corridor <2,473 05/02/17 EMH138 Electrical Manhole West of Water Hammer Tower 4,767 05/02/17 CW-1 (1 CW0006C) Manhole North of the Turbine Building 2,919 05/02/17 CW-3 ( 1CW0008C) Manhole near the Radwaste Building 2,286 05/04/17 EMH138 Electrical Manhole West of Water Hammer Tower 6,476 05/08/17 Anode A-3 (Northwest side of Turbine Building) <2,310 05/10/17 EMH138 Electrical Manhole West of Water Hammer Tower <1,720 06/12/17 XNB01 & XNB02 Transformer Discharge Vault, Sump 095 2,708 06/12/17 XMA01 D Transformer Discharge Vault, Sump 0725 <1,727 06/12/17 XMR01 Transformer Discharge Vault, Sump 096 <1,905 06/12/17 XPB03 & XPB04 Transformer Discharge Vault, Sump 094 <1,677 06/12/17 XMA01A, XMA01 B, XMA01 C & XMA02 Transformer Discharge 2,925 Vault, Sump 097 (Main) 07/26/17 Dewatering Well #1 - East of the Turbine Building 4,520 08/01/17 CW-2 (1CW0007C) Manhole East of Condensate Storage Tank 2,595 08/01/17 CW-3 (1 CW0008C) Manhole near the Radwaste Building <2, 115 08/02/17 Dewatering Well #3 - West of the Turbine Building <1,612 08/21/17 CW-1 (1 CW0006C) Manhole North of the Turbine Building <1,733 2017 Annual Radioactive Effluent Release Report

Date Location Description Tritium (pCi/L) 08/21/17 CW-3 (1 CW0008C) Manhole near the Radwaste Building <1,725 08/22/17 CW-1 (1CW0006C) Manhole North of the Turbine Building 1,984 08/23/17 EMH-B1-1 West of Main Security Building 3,559 09/20/17 EMH123 Electrical Manhole NW of Maintenance Shop 1,045 09/20/17 EMH102 Electrical Manhole NW of Maintenance Shop 1,680 09/20/17 EMH101 Electrical Manhole North of the Turbine Building 1,874 09/25/17 EMH105 Electrical Manhole West of Olive Ann Beech Building <1,898 09/25/17 EMH104 Electrical Manhole West of Maintenance Shop <1,845 09/25/17 EMH119 Electrical Manhole North of Turbine Building <2,038 09/25/17 EMH120 Electrical Manhole NE of Turbine Building <2,045 10/03/17 EMH104 Electrical Manhole West of Maintenance Shop <1,622 10/04/17 EMH118 Electrical Manhole East of Condensate Storage Tank 5,811 10/13/17 EMH104 Electrical Manhole West of Maintenance Shop <2,456 10/13/17 EMH118 Electrical Manhole East of Condensate Storage Tank 7,138 10/16/17 EMH104 Electrical Manhole West of Maintenance Shop <2,175 10/17/17 EMH104 Electrical Manhole West of Maintenance Shop 2,719 10/17/17 AUX Spill Remediation Well SE of Turbine Building 4,215 10/30/17 CW-1 (1 CW0006C) Manhole North of the Turbine Building <2,513 As expected, tritium activity was detected in some of the subsurface water samples. The highest detected tritium measured was 13,140 pCi/L in a sample collected 01-30-17 from manhole CW-1 (1CW0006C) located north of the Turbine Building. Gamma activity was not detected in the 01-30-17 subsurface water sample. Again, the detected tritium activity is likely due to the Plant's reuse of tritiated lake water. Lake water is used for plant cooling, which includes essential service water, and in the Fire Protection System. The measured tritium levels from subsurface water monitoring were lower than the onsite groundwater tritium reporting level of 20,000 pCi/L.

Conclusion Based upon the results of' the water samples that were analyzed in association with the Onsite Groundwater Protection Program, no inadvertent radiological releases to ground water were identified.

2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

DATE NUCLIDE ACTIVITY SIGN ERROR NOTE AUX 08-May-17 MN-54 < 2.8 AUX 08-May-17 C0-58 < 3.3 AUX 08-May-17 FE-59 < 6.1 AUX 08-May-17 C0-60 < 2.5 AUX 08-Mav-17 ** ZN-65 < 3.5 AUX 08-Mav-17 ZR-NB-95 < 2.6 AUX 08-Mav-17 1-131 < 0.440 AUX 08-Mav-17 CS-134 < 2.9 AUX 08-May-17 CS-137 < 3.4 AUX 08-May-17 BA-LA-140 < 2.3 AUX 08-May-17 H-3 489 +/- 95 EAST ESW-W 13-Feb-17 MN-54 < 2.8 EAST ESW-W 13-Feb-17 MN-54 < 2.6 Duplicate EAST ESW-W* 13-Feb-17 C0-58 < 1.9 Duplicate EASTESW-W 13-Feb-17 C0-58 < 2.4 EASTESW-W 13-Feb-17 FE-59 < 3.0 EAST ESW-W 13-Feb-17 FE-59 < 5.0 Duplicate EAST ESW-W 13-Feb-17 C0-60 < 2.6 Duplicate EAST ESW-W 13-Feb-17 C0-60 < 2.3 EAST ESW-W 13-Feb-17 ZN-65 < 4.6 EAST ESW-W 13-Feb-17 ZN-65 < 3.8 Duplicate EASTESW-W 13-Feb-17 ZR-NB-95 < 2.6 Duplicate EASTESW-W 13-Feb-17 ZR-NB-95 < 2.2 EASTESW-W 13-Feb-17 1-131 < 0.458 EASTESW-W 13-Feb-17 1-131 < 0.430 Duplicate EASTESW-W 13-Feb-17 CS-134 < 2.5 Duplicate EAST ESW-W 13-Feb-17 CS-134 < 3.3 EAST ESW-W 13-Feb-17 CS-137 < 2.0 EAST ESW-W 13-Feb-17 CS-137 < 2.7 Duplicate EASTESW-W 13-Feb-17 BA-LA-140 < 2.0 Duplicate EASTESW-W 13-Feb-17 BA-LA-140 < 4.2 EASTESW-W 13-Feb-17 H-3 < 187 EASTESW-W 13-Feb-17 H-3 < 187 Duplicate EASTESW-W 08-Mav-17 MN-54 < 2.6 EAST ESW-W 08-May-17 C0-58 < 2.6 EAST ESW-W 08-May-17 FE-59 < 2.1 EASTESW-W 08-May-17 C0-60 < 2.3 EAST ESW-W 08-May-17 ZN-65 < 2.1 EASTESW-W 08-May-17 ZR-NB-95 < 2.0 EASTESW-W 08-May-17 1-131 < 0.337 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE EAST ESW-W 08-Mav-17 CS-134 < 2.4 EASTESW-W 08-Mav-17 CS-137 < 2.9 EAST ESW-W 08-May-17 BA-LA-140 < 2.2 EAST ESW-W 08-Mav-17 H-3 < 151 EASTESW-W 24-Aua-17 MN-54 < 3.6 EASTESW-W 24-Aug-17 C0-58 < 3.3 EASTESW-W 24-Aug-17 FE-59 < 6.0 EAST ESW-W 24-Aug-17 C0-60 < 1.7 EAST ESW-W 24-Aug-17 ZN-65 < 4.8 EASTESW-W 24-Aug-17 ZR-NB-95 < 3.1 EASTESW-W 24-Aug-17 1-131 < 0.210 EASTESW-W 24-Aug-17 CS-134 < 3.2

• EAST ESW-W 24-Aug-17 CS-137 < 3.4 EAST ESW-W 24-Aua-17 BA-LA-140 < 2.2 EASTESW-W 24-Aug-17 H-3 < 149 EASTESW-W 06-Nov-17 MN-54 < 4.0 EAST ESW-W 06-Nov-17 C0-58 < 6.2 EAST ESW-W 06-Nov-17 FE-59 < 6.8 EAST ESW-W 06-Nov-17 C0-60 < 4.6 EASTESW-W 06-Nov-17 ZN-65 < 5.3 EAST ESW-W 06-Nov-17 ZR-NB-95 < 4.5 EASTESW-W 06-Nov-17 1-131 < 0.426 EAST ESW-W 06-Nov-17 CS-134 < 6.4 EAST ESW-W 06-Nov-17 CS-137 < 5.5 EAST ESW-W 06-Nov-17 BA-LA-140 < 5.3 EAST ESW-W 06-Nov-17 H-3 < 183 MW-01A 13-Feb-17 MN-54 < 1.9 MW-01A 13-Feb-17 C0-58 < 3.0 MW-01A 13-Feb-17 FE-59 < 4.5 MW-01A 13-Feb-17 C0-60 < 3.3 MW-01A 13-Feb-17 ZN-65 < 6.5 MW-01A 13-Feb-17 ZR-NB-95 < 3.4 MW-01A 13-Feb-17 1-131 < 0.235 MW-01A 13-Feb-17 CS-134 < 4.4 MW-01A 13-Feb-17 CS-137 < 2.7 MW-01A 13-Feb-17 BA-LA-140 < 3.3 MW-01A 13-Feb-17 H-3 < 187 MW-01A 08-May-17 MN-54 < 3.5 MW-01A 08-May-17 C0-58 < 2.5 MW-01A 08-Mav-17 FE-59 < 9.5 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-01A 08-May-17 C0-60 < 3.7 MW-01A 08-Mav-17 ZN-65 < 8.7 MW-01A 08-May-17 ZR-NB-95 < 4.0 MW-01A 08-May-17 1-131 < 0.330 MW-01A 08-May-17 CS-134 < 4.2 MW-01A 08-May-17 CS-137 < 4.2 MW-01A 08-May-17 BA-LA-140 < 3.8 MW-01A 08-May-17 H-3 < 147 MW-01A 24-Aug-17 MN-54 < 3.2 MW-01A 24-Auq-17 C0-58 < 2.9 MW-01A 24-Auq-17 FE-59 < 7.7 MW-01A 24-Aug-17 C0-60 < 2.5 MW-01A 24-Auq-17 ZN-65 < 6.0 MW-01A 24-Auq-17 ZR-NB-95 < 3.9 MW-01A 24-Aug-17 1-131 < 0.276 MW-01A 24-Auq-17 CS-134 < 4.0 MW-01A 24-Auq-17 CS-137 < 2.7 MW-01A 24-Aug-17 BA-LA-140 < 4.7 MW-01A 24-Auq-17 H-3 < 152 MW-01A 06-Nov-17 MN-54 < 2.9 MW-01A 06-Nov-17 C0-58 < 2.0 MW-01A 06-Nov-17 FE-59 < 6.1 MW-01A 06-Nov-17 C0-60 < 2.5 MW-01A 06-Nov-17 ZN-65 < 5.8 MW-01A 06-Nov-17 ZR-NB-95 < 3.4 MW-01A 06-Nov-17 1-131 < 0.283 MW-01A 06-Nov-17 CS-134 < 3.5 MW-01A 06-Nov-17 CS-137 < 3.9 MW-01A 06-Nov-17 BA-LA-140 < 4.1 MW-01A 06-Nov-17 H-3 < 183 MW-01B 13-Feb-17 MN-54 < 2.1 MW-01B 13-Feb-17 C0-58 < 2.4 MW-01B 13-Feb-17 FE-59 < 4.8 MW-01B 13-Feb-17 C0-60 < 1.7 MW-01B 13-Feb-17 ZN-65 < 5.5 MW-01B 13-Feb-17 ZR-NB-95 < 2.2 MW-01B 13-Feb-17 1-131 < 0.237 MW-01B 13-Feb-17 CS-134 < 3.1 MW-01B 13-Feb-17 CS-137 < 3.3 MW-01B 13-Feb-17 BA-LA-140 < 2.4 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-018 13-Feb-17 H-3 < 154 MW-018 08-May-17 MN-54 < 3.2 MW-018 08-May-17 C0-58 < 1.9 MW-018 08-May-17 FE-59 < 5.7 MW-018 08-May-17 C0-60 < 2.0 MW-018 08-May-17 ZN-65 < 3.5 MW-018 08-May-17 ZR-NB-95 < 2.1 MW-018 08-May-17 1-131 < 0.435 MW-018 08-May-17 CS-134 < 3.2 MW-018 08-May-17 CS-137 < 3.2 MW-018 08-May-17 BA-LA-140 < 1.4 MW-018 08-May-17 H:-3 < 147 MW-018 24-Aug-17 MN-54 < 2.5 MW-018 24-Aug-17 C0-58 < 2.8 MW-018 24-Aug-17 FE-59 < 2.9 MW-018 24-Aug-17 C0-60 < 1.9 MW-018 24-Aug-17 ZN-65 < 5.1 MW-018 24-Aug-17 ZR-NB-95 < 3.8 MW-018 24-Aug-17 1-131 < 0.498 MW-018 24-Aug-17 CS-134 < 3.5 MW-018 24-Aug-17 CS-137 < 2.9 MW-018 24-Aug-17 BA-LA-140 < . 2.3 MW-018 24-Aug-17 H-3 < 149 MW-018 06-Nov-17 MN-54 < 4.3 MW-018 06-Nov-17 C0-58 < 2.9 MW-018 06-Nov-17 FE-59 < 6.2 MW-018 06-Nov-17 C0-60 < 2.7 MW-018 06-Nov-17 ZN-65 < 9.6 MW-018 06-Nov-17 ZR-NB-95 < 6.2 MW-018 06-Nov-17 1-131 < 0.244 MW-018 06-Nov-17 CS-134 < 4.7 MW-018 06-Nov-17 CS-137 < 3.2 MW-018 06-Nov-17 BA-LA-140 < 5.3 MW-018 06-Nov-17 H-3 < 183 MW-01C 13-Feb-17 MN-54 < 3.1 MW-01C 13-Feb-17 C0-58 < 2.3 MW-01C 13-Feb-17 FE-59 < 6.7 MW-01C 13-Feb-17 C0-60 < 2.8 MW-01C 13-Feb-17 ZN-65 < 2.9 MW-01C 13-Feb-17 ZR-NB-95 < 3.1 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-01C 13-Feb-17 1-131 < 0.213 MW-01C 13-Feb-17 CS-134 < 3.7 MW-01C 13-Feb-17 CS-137 < 4.0 MW-01C 13-Feb-17 BA-LA-140 < 2.7 MW-01C 13-Feb-17 H-3 < 154 MW-01C 08-May-17 MN-54 < 2.2 MW-01C 08-May-17 C0-58 < 3.0 MW-01C 08-May-17 FE-59 < 5.6 MW-01C 08-May-17 C0-60 < 2.5 MW-01C 08-May-17 ZN-65 < 2.7 MW-01C 08-May-17 ZR-NB-95 < 2.3 MW-01C 08-May-17 1-131 < 0.262 MW-01C 08-May-17 CS-134 < 3.2 MW-01C 08-Mav-17 CS-137 < 2.2 MW-01C 08-May-17 BA-LA-140 < 2.7 MW-01C 08-Mav-17 H-3 < 147 MW-01C 24-Auq-17 MN-54 < 2.9 MW-01C 24-Aug-17 C0-58 < 3.9 MW-01C 24-Auq-17 FE-59 < 9.8 MW-01C 24-Auq-17 C0-60 < 2.6 MW-01C 24-Aug-17 ZN-65 < 6.2 MW-01C 24-Auq-17 ZR-NB-95 < 5.1 MW-01C 24-Auq-17 1-131 < 0.433 MW-01C 24-Aug-17 CS-134 < 4.2 MW-01C 24-Auq-17 CS-137 < 2.8 MW-01C 24-Auq-17 BA-LA-140 < 3.2 MW-01C 24-Aug-17 H-3 < 149 MW-01C 06-Nov-17 MN-54 < 2.4 MW-01C 06-Nov-17 MN-54 < 2.5 Duplicate MW-01C 06-Nov-17 C0-58 < 2.5 MW-01C 06-Nov-17 C0-58 < 3.0 Duplicate MW-01C 06-Nov-17 FE-59 < 5.4, Duplicate MW-01C 06-Nov-17 FE-59 < 5.3 MW-01C 06-Nov-17 C0-60 < 1.9 Duplicate MW-01C 06-Nov-17 C0-60 < 2.3 MW-01C 06-Nov-17 ZN-65 < 3.2 Duplicate MW-01C 06-Nov-17 ZN-65 < 2.9 MW-01C 06-Nov-17 . ZR-NB-95 < 3.5 MW-01C 06-Nov-17 ZR-NB-95 < 3.5 Duplicate MW-01C 06-Nov-17 1-131 < 0.462 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-01C 06-Nov-17 1-131 < 0.452 Duplicate MW-01C 06-Nov-17 CS-134 < 3.0 MW-01C 06-Nov-17 CS-134 < 3.6 Duplicate MW-01C 06-Nov-17 CS-137 < 3.1 MW-01C 06-Nov-17 CS-137 < 1.9 Duplicate MW-01C 06-Nov-17 BA-LA-140 < 3.1 MW-01C 06-Nov-17 BA-LA-140 < 3.0 Duplicate MW-01C 06-Nov-17 H-3 < 183 Duplicate MW-01C 06-Nov-17 H-3 < 183 MW-02A 13-Feb-17 MN-54 < 1.7 MW-02A 13-Feb-17 C0-58 < 1.3 MW-02A 13-Feb-17 FE-59 < 3.4 MW-02A 13-Feb-17 C0-60 < 2.5 MW-02A 13-Feb-17 ZN-65 < 3.4 MW-02A 13-Feb-17 ZR-NB-95 < 2.4 MW-02A 13-Feb-17 1-131 < 0.201 MW-02A 13-Feb-17 CS-134 < 3.0 MW-02A 13-Feb-17 CS-137 < 3.0 MW-02A 13-Feb-17 BA-LA-140 < 2.5 MW-02A 13-Feb-17 H-3 < 154 MW-02A 08-May-17 MN-54 < 2.5 MW-02A 08-May-17 C0-58 < 2.4 MW-02A 08-Mav-17 FE-59 < 5.2 MW-02A 08-May-17 C0-60 < 2.9 MW-02A 08-May-17 ZN-65 < 6.4 MW-02A 08-May-17 ZR-NB-95 < 2.9 MW-02A 08-May-17 1-131 < 0.387 MW-02A 08-May-17 CS-134 < 4.1 MW-02A 08-May-17 CS-137 < 2.7 MW-02A 08-May-17 BA-LA-140 < 4.1 MW-02A 08-May-17 H-3 < 147 MW-02A 24-Aug-17 MN-54 < 5.5 MW-02A 24-Aug-17 C0-58 < 5.4 MW-02A 24-Aug-17 FE:-59 < 7.2 MW-02A 24-Aug-17 C0-60 < 5.0 MW-02A 24-Aug-17 ZN-65 < 6.6 MW-02A 24-Aug-17 ZR-NB-95 < 5.0 MW-02A 24-Aug-17 1-131 < 0.482 MW-02A 24-Aug-17 CS-134 < 6.2 MW-02A 24-Aug-17 CS-137 < 4.1 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-02A 24-Aug-17 BA-LA-140 < 8.6 MW-02A 24-Aug-17 H-3 < 149 MW-02A 06-Nov-17 MN-54 < 2.0 MW-02A 06-Nov-17 C0-58 <. 2.9 MW-02A 06-Nov-17 FE-59 < 4.0 MW-02A 06-Nov-17 C0-60 < 1.6 MW-02A 06-Nov-17 ZN-65 < 2.6 MW-02A 06-Nov-17 ZR-NB-95 < 2.3 MW-02A 06-Nov~17 1-131 < 0.233 MW-02A 06-Nov-17 CS-134 < 3.3 MW-02A 06-Nov-17 CS-137 < 4.0 MW-02A 06-Nov-17 BA-LA-140 < 2.8 MW-02A 06-Nov-17 H-3 < 183 MW-028 13-Feb-17 MN-54 < 1.9 MW-028 13-Feb-17 C0-58 < 2.1 MW-028 13-Feb-17 FE-59 < 6.9 MW-028 13-Feb-17 C0-60 < 1.9 MW-028 13-Feb-17 ZN-65 < 4.9 MW-028 13-Feb-17 ZR-NB-95 < 1.8 MW-028 13-Feb-17 1-131 < 0.433 MW-028 13-Feb-17 CS-134 < 2.6 MW-028 13-Feb-17 CS-137 < 2.1 MW-028 13-Feb-17 BA-LA-140 < 3.0 MW-028 13-Feb-17 H-3 < 154 MW-028 08-May-17 MN-54 < 3.4 MW-028 08-May-17 C0-58 < 2.5 MW-028 08-May-17 FE-59 < 2.6 MW-028 08-Mav-17 C0-60 < 2.1 MW-028 08-May-17 ZN-65 < 2.0 MW-028 08-May-17 ZR-NB-95 < 3.5 MW-028 08-Mav-17 1-131 < 0.252 MW-028 08-Mav-17 CS-134 < 3.3 MW-028 08-May-17 CS-137 < 2.5 MW-028 08-May-17 BA-LA-140 < 4.1 MW-028 08-May-17 H-3 < 147 MW-028 24-Aug-17 MN-54 < 1.9 MW-028 24-Aug-17 C0-58 < 2.8 MW-028 24-Aug-17 FE-59 < 5.8 MW-028 24-Aug-17 C0-60 < 1.5 MW-028 24-AuQ-17 ZN-65 < . 4.5 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-028 24-Aug-17 ZR-NB-95 < 2.9 MW-028 24-Aug-17 1-131 < 0.418 MW-028 24-Aug-17 CS-134 < 3.0 MW-028 24-Aug:..17 CS-137 < 2.0 MW-028 24-Aug-17 BA-LA-140 < 2.5 MW-028 24-Aug-17 H-3 < 149 MW-028 06-Nov-17 MN-54 < 2._1 MW-028 06-Nov-17 C0-58 < 2.9 MW-028 06-Nov-17 FE-59 < 6.0 MW-028 06-Nov-17 C0-60 < 2.1 MW-028 06-Nov-17 ZN-65 < 4.0 MW-028 06-Nov-17 ZR-NB-95 < 3.9 MW-028 06-Nov-17 1-131 < 0.454 MW-028 06-Nov-17 CS-134 < 3.5 MW-028 06-Nov-17 CS-137 < 3.1 MW-028 06-Nov-17 BA-LA-140 < 2.8 MW-028 06-Nov-17 H-3 < 183 MW-03A 13-Feb-17 MN-54 < 2.3 MW-03A 13-Feb-17 C0-58 < 2.1 MW-03A 13-Feb-17 - FE-59 < 4.1 MW-03A 13-Feb-17 C0-60 < 2.5 MW-03A 13-Feb-17 . ZN-65 < 3.4 MW-03A 13-Feb-17 ZR-NB-95 < 2.2 MW-03A 13-Feb-17 1-131 < 0.478 MW-03A 13-Feb-17 CS-134 < 3.1 MW-03A 13-Feb-17 CS-137 < 2.4 MW-03A 13-Feb-17 BA-LA-140 < 2.3 MW-03A 13-Feb-17 H-3 < 154 MW-03A 08-May-17 MN-54 < 6.0 MW-03A 08-May-17 C0-58 < 6.6 MW-03A 08-May-17 FE-59 < 5.2 MW-03A 08-May-17 C0-60 < 5.3 MW-03A 08-May-17 ZN-65 < 11.0 MW-03A .08-May-17 ZR-NB-95 < 6.0 MW-03A 08-May-17 1-131 < 0.302 MW-03A 08-May-17 CS-134 < 6.7 MW-03A 08-Mav-17 CS-137 < 4.3 MW-03A 08-May-17 BA-LA-140 < 4.9 MW-03A 08-May-17 H-3 < 147 MW-03A 24-Aug-17* MN-54 < 2.8 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-03A 24-Aug-17 C0-58 < 3.0 MW-03A 24-Aug-17 FE-59 < 7.3 MW-03A 24-Aug-17 C0-60 < 1.6 MW-03A 24-Aug-17 ZN-65 < 4.4 MW-03A 24-AuQ-17 ZR-NB-95 < 3.1 MW-03A 24-Aug-17 1-131 < 0.341 MW-03A 24-AuQ-17 CS-134 < 2.7 MW-03A 24-AuQ-17 CS-137 < 4.1 MW-03A 24-Aug-17 BA-LA-140 < 1.3 MW-03A 24-Aug-17 H-3 < 149 MW-03A 06-Nov-17 MN-54 < 2.8 MW-03A 06-Nov-17 C0-58 < 2.9 MW-03A 06-Nov-17 FE-59 < 6.3 MW-03A 06-Nov-17 C0-60 < 3.0 MW-03A 06-Nov-17 ZN-65 < 4.8 MW-03A 06-Nov-17 ZR-NB-95 < 3.7 MW-03A 06-Nov-17 1-131 < 0.408 MW-03A 06-Nov-17 CS-134 < 3.4 MW-03A 06-Nov-17 CS-137 < 2.8 MW-03A 06-Nov-17 BA-LA-140 < 3.3 MW-03A 06-Nov-.17 H-3 < 183 MW-03B 13-Feb-17 MN-54 < 1.9 MW-03B 13-Feb-17 C0-58 < 1.5 MW-03B 13-Feb-17 FE-59 < 4.1 MW-03B 13-Feb-17 C0-60 < 1.9 MW-03B 13-Feb-17 ZN-65 < 3.3 MW-03B 13-Feb-17 ZR-NB-95 < 2.7 MW-038 13-Feb-17 1-131 < 0.471 MW-03B 13-Feb-17 CS-134 < 2.8 MW-03B 13-Feb-17 CS-137 < 3.1 MW-03B 13-Feb-17 BA-LA-140 < 2.0 MW-038 13-Feb-17 H-3 < 154 MW-03B 08-May-17 MN-54 < 2.0 MW-03B 08-May-17 C0-58 < 3.2 MW-03B 08-May-17 FE-59 < 6.8 MW-03B 08-May-17 C0-60 < 2.2 MW-03B 08-May-17 ZN-65 < 4.7 MW-03B 08-May-17 ZR-NB-95 < 2.2 MW-03B 08-May-17 1-131 < 0.306 MW-03B 08-May-17 CS-134 < 3.3 (J1 2017 Annual Radioactive Effluent Release Report 0

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-038 08-May-17 CS-137 < 3.5 MW-038 08-May-17 BA-LA-140 < 1.8 MW-038 08-May-17 H-3 < 147 MW-038 24-Aug-17 MN-54 < 3.0 MW-038 24-AuQ-17 C0-58 < 1.7 MW-038 24-Aug-17 FE-59 < 5.4 MW-038 24-AuQ-17 C0-60 < 2.2 MW-038 24-AuQ-17 ZN-65 < 3.6 MW-038 24-Aug-17 ZR-NB-95 < 3.7 MW-038 24-AuQ-17 1-131 < 0.275 MW-038 24-AuQ-17 CS-134 < 3.8 MW-038 24-Aug-17 CS-137 < 3.6 MW-038 24-Aug-17 BA-LA-140 < 2.9 MW-038 24-Aug-17 H-3 < 149 MW-038 06-Nov-17 MN-54 < 2.1 MW-038 06-Nov-17 C0-58 < 2.5 MW-038 06-Nov-17 FE-59 < 4.6 MW-038 06-Nov-17 C0-60 < 3.2 MW-038 06-Nov-17 ZN-65 < 5.8 MW-038 06-Nov-17 ZR-NB-95 < 2.2 MW-038 06-Nov-17 1-131 < 0.420 MW-038 06-Nov-17 CS-134 < 3.0 MW-038 06-Nov-17 CS-137 < 2.4 MW-038 06-Nov-17 BA-LA-140 < 2.4 MW-038 06-Nov-17 H-3 < 183 MW-03C 13-Feb-17 MN-54 < 2.5 MW-03C 13-Feb-17 C0-58 < 2.0 MW-03C 13-Feb-17 FE-59 < 3.8 MW-03C 13-Feb-17 C0-60 < 2.9 MW-03C 13-Feb-17 ZN-65 < 4.1 MW-03C 13-Feb-17 ZR-NB-95 < 1.8 MW-03C 13-Feb-17 1-131 < 0.347 MW-03C 13-Feb-17 CS-134 < 3.0 MW-03C 13-Feb-17 CS-137 < 3.1 MW-03C 13-Feb-17 BA-LA-140 < 2.7 MW-03C 13-Feb-17 H-3 < 154 MW-03C 08-May-17 MN-54 < 2.3 MW-03C 08-May-17 C0-58 < 1.7 MW-03C 08-May-17 FE-59 < 2.5 MW-03C 08-May-17 C0-60 < 2.2 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-03C 08-May-17 ZN-65 < 2.9 MW-03C 08-May-17 ZR-NB-95 < 2.3 MW-03C 08-May-17 1-131 < 0.362 MW-03C 08-May-17 CS-134 < 3.5 MW-03C 08-May-17 CS-137 < 3.0 MW-03C 08-May-17 BA-LA-140 < 3.2 MW-03C 08-Mav-17 H-3 < 147 MW-03C 24-Aug-17 MN-54 < 3.8 MW-03C 24-Aug-17 C0-58 < 2.3 MW-03C 24-Aug-17 FE-59 < 5.1 MW-03C 24-Aug-17 C0-60 < 2.4 MW-03C 24-Aug-17 ZN-65 < 7.8 MW-03C 24-Aug-17 ZR-NB-95 < 3.6 MW-03C 24-Aug-17 1-131 < 0.321 MW-03C 24-Aug-17 CS-134 < 4.3 MW-03C 24-Aug-17 CS-137 < 3.3 MW-03C 24-Aug-17 BA-LA-140 < 4.4 MW-03C 24-Aug-17 H-3 < 149 MW-03C 06-Nov-17 MN-54 < 1.5 MW-03C 06-Nov-17. C0-58 < 1.7 MW-03C 06-Nov-17 FE-59 < 4.4 MW-03C 06-Nov-17 C0-60 < 1.3 MW-03C 06-Nov-17 ZN-65 < 3.6 MW-03C 06-Nov-17 ZR-NB-95 < 2.9 MW-03C 06-Nov-17 1-131 < 0.307 MW-03C 06-Nov-17 CS-134 < 3.2 MW-03C 06-Nov-17 CS-137 < 1.8 MW-03C 06-Nov-17 BA-LA-140 < 2.6 MW-03C 06-Nov-17 H-3 < 183 MW-05C 13-Feb-17 MN-54 < 2.0 MW-05C 13-Feb-17 C0-58 < 3.0 MW-05C 13-Feb-17 FE-59 < 5.3 MW-05C 13-Feb-17 C0-60 < 2.1 MW-05C 13-Feb-17 ZN-65 < 5.0 MW-05C 13-Feb-17 ZR-NB-95 < 2.5 MW-05C 13-Feb-17 1-131 < 0.358 MW-05C 13-Feb-17 CS-134 < 3.6 MW-05C 13-Feb-17 CS-137 < 2.0 MW-05C 13-Feb-17 BA-LA-140 < 2.5 MW-05C 13-Feb-17 H-3 < 154 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-05C 08-May-17 MN-54 < 2.9 MW-05C 08-May-17 C0-58 < 2.1 MW-05C 08-May-17 FE-59 < 5.3 MW-05C 08-May-17 C0-60 < 1.7 MW-05C 08-Mav-17 ZN-65 < 4.0 MW-05C 08-May-17 ZR-NB-95 < 3.1 MW-05C 08-Mav-17 1-131 < 0.450 MW-05C 08-Mav-17 CS-134 < 3.0 MW-05C 08-May-17 CS-137 < 2.5 MW-05C 08-May-17 BA-LA-140 < 1.4 MW-05C 08-Mav-17 H-3 < 147 MW-05C 24-Aug-17 MN-54 < 3.2 MW-05C 24-Aug-17 C0-58 < 2.5 MW-05C 24-Aug-17 FE-59 < 5.0 MW-05C 24-Aug-17 C0-60 < 2.5 MW-05C 24-Aug-17 ZN-65 < 4.2 MW-05C 24-Aug-17 ZR-NB-95 < 3.7 MW-05C 24-Aug-17 1-131 < 0.237 MW-05C 24-Aug-17 CS-134 < 3.4 MW-05C 24-Aug-17 CS-137 < 2.6 MW-05C 24-Aug-17 BA-LA-140 < 2.6 MW-05C 24-Auq-17 H-3 < 149 MW-05C 06-Nov-17 MN-54 < 3.0 MW-05C 06-Nov-17 C0-58 < 3.7 MW-05C 06-Nov-17 FE-59 < 7.1 MW-05C 06-Nov-17 C0-60 < 3.8 MW-05C 06-Nov-17 ZN-65 < 3.7 MW-05C 06-Nov-17 ZR-NB-95 < 5.1 MW-05C 06-Nov-17 1-131 < 0.291 MW-05C 06-Nov-17 CS-134 < 4.7 MW-05C 06-Nov-17 CS-137 < 4.9 MW-05C 06-Nov-17 BA-LA-140 < 1.7 MW-05C 06-Nov-17 H-3 < 183 MW-11A 13-Feb-17 MN-54 < 3.0 MW-11A 13-Feb-17 C0-58 < 3.3 MW-11A 13-Feb-17 FE-59 < 5.9 MW-11A 13-Feb-17 C0-60 < 2.9 MW-11A 13-Feb-17 ZN-65 < 3.1 MW-11A 13-Feb-17 ZR-NB-95 < 2.2 MW-11A 13-Feb-17 1-131 < 0.283 CJ'I 2017 Annual Radioactive Effluent Release Report w

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-11A 13-Feb-17 CS-134 < 3.4 MW-11A 13-Feb-17 CS-137 < 3.3 MW-11A 13-Feb-17 BA-LA-140 < 4.1 MW-11A 13-Feb-17 H-3 < 154 MW-11A 08-May-17 MN-54 < 2.1 MW-11A 08-May-17 C0-58 < 2.7 MW-11A 08-May-17 FE-59 < 3.1 MW-11A 08-May-17 C0-60 < 2.9 MW-11A 08-May-17 ZN-65 < 7.2 MW-11A 08-May-17 ZR-NB-95 < 3.3 MW-11A 08-May-17 1-131 < 0.298 MW-11A 08-May-17 CS-134 < 3.5 MW-11A 08-May-17 CS-137 < 3.3 MW-11A 08-May-17 BA-LA-140 < 3.0 MW-11A 08-May-17 H-3 < 151 MW-11A 24-Aug-17 MN-54 < 3.6 MW-11A 24-Aug-17 C0-58 < 1.5 MW-11A 24-Aug-17 FE-59 < 4.3 MW-11A 24-Aug-17 C0-60 < 2.7 MW-11A 24-Aug-17 ZN-65 < 3.7 MW-11A 24-Aug-17 ZR-NB-95 < 3.1 MW-11A 24-Aug-17 1-131 < 0.247 MW-11A 24-Aug-17 CS-134 < 2.9 MW-11A 24-Aug-17 CS-137 < 2.0 MW-11A 24-Aug-17 BA-LA-140 < 2.3 MW-11A 24-Aug-17 H-3 < 149 MW-11A 06-Nov-17 MN-54 < 1.6 MW-11A 06-Nov-17 C0-58 < 2.3 MW-11A 06-Nov-17 FE-59 < 2.6 MW-11A 06-Nov-17 C0-60 < 1.3 MW-11A 06-Nov-17 ZN-65 < 4.0 MW-11A 06-Nov-17 ZR-NB-95 < 3.0 MW-11A 06-Nov-17 1-131 < 0.286 MW-11A 06-Nov-17 CS-134 < 2.8 MW-11A 06-Nov-17 CS-137 < 3.1 MW-11A 06-Nov-17 BA-LA-140 < 2.9 MW-11A 06-Nov-17 H-3 < 183 MW-11B 13-Feb-17 MN-54 < 5.6 MW-11B 13-Feb-17 C0-58 < 2.4 MW-11B 13-Feb-17 FE-59 < 6.9 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-11B 13-Feb-17 C0-60 < 5.0 MW-11B 13-Feb-17 ZN-65 < 2.9 MW-11B 13-Feb-17 ZR-NB-95 < 3.9 MW-11B 13-Feb-17 1-131 < 0.443 MW-11B 13-Feb-17 CS-134 < 5.4 MW-11B 13-Feb-17 CS-137 < 5.2 MW-11B 13-Feb-17 BA-LA-140 < 5.7 MW-11B 13-Feb-17 H-3 < 154 MW-11B 08-May-17 MN-54 < 3.8 MW-11B 08-May-17 C0-58 < 2.3 MW-11B 08-May-17 FE-59 < 6.7 MW-11B 08-May-17 C0-60 < 2.7 MW-11B 08-May-17 ZN-65 < 7.1 MW-11B 08-May-17 ZR-NB-95 < 3.5 MW-11B 08-May-17 1-131 < 0.369 MW-11B 08-May-17 CS-134 < 4.0 MW-11B 08-May-17 CS-137 < 3.3 MW-11B 08-May-17 BA-LA-140 < 3.1 MW-11B 08-May-17 H-3 < 151 MW-11B 24-Aug-17 MN-54 < 2.2 MW-11B 24-Aug-17 MN-54 < 3.6 Duplicate MW-11B 24-Aug-17 C0-58 < 4.5 Duplicate MW-11B 24-Aug-17 C0-58 < 3.0 MW-11B 24-Aug-17 FE-59 < 7.0 Duplicate MW-11B 24-Auq-17 FE-59 < 5.1 MW-11B 24-Aug-17 C0-60 < 1.8 MW-11B 24-Aug-17 C0-60 < 3.5 Duplicate MW-11B 24-Aug-17 ZN-65 < 2.3 MW-11B 24-Aug-17 ZN-65 < 7.3 Duplicate MW-11B 24-Aug-17 ZR-NB-95 < 4.0 Duplicate MW-11B 24-Aug-17 ZR-NB-95 < 3.0 MW-11B 24-Auq-17 1-131 < 0.312 Duplicate MW-11B 24-Aug-17 1-131 < 0.245 MW-11B 24-Aug-17 CS-134 < 4.3 Duplicate MW-11B 24-Auq-17 CS-134 < 3.3 MW-11B 24-Aug-17 CS-137 < 5.1 Duplicate MW-11B I 24-Aug-17 CS-137 < 4.0 I

MW-11B 24-Aug-17 BA-LA-140 < 1.7 MW-11B I 24-Aug-17 BA-LA-140 < 2.0 Duplicate MW-11B iI 24-Auq-17 H-3 < 149 Duplicate UI 2017 Annual Radioactive Effluent Release Report UI

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-11B 24-Aug-17 H-3 < 149 MW-11B 06-Nov-17 MN-54 < 2.0 MW-11B 06-Nov-17 C0-58 < 2.0 MW-11B 06-Nov-17 FE-59 < 3.6 MW-11B 06-Nov-17 C0-60 < 2.4 MW-11B 06-Nov-17 ZN-65 < 3.5 MW-11B 06-Nov-17 ZR-NB-95 < 2.0 MW-11B 06-Nov-17 1-131 < 0.271 MW-11B 06-Nov-17 CS-134 < 2.4 MW-11B 06-Nov-17 CS-137 < 3.3 MW-11B 06-Nov-17 BA-LA-140 < 2.6

\

MW-11B 06-Nov-17 H-3 < 183 MW-12A 13-Feb-17 MN-54 < 3.5 MW-12A 13-Feb-17 C0-58 < 3.5 MW-12A 13-Feb-17 FE-59 < 7.1 MW-12A 13-Feb-17 C0-60 < 1.8 MW-12A 13-Feb-17 ZN-65 < 4.3 MW-12A 13-Feb-17 ZR-NB-95 < 5.2 MW-12A 13-Feb-17 1-131 < 0.339 MW-12A 13-Feb-17 CS-134 < 3.8 MW-12A 13-Feb-17 CS-137 < 2.4 MW-12A 13-Feb-17 BA-LA-140 < 5.3 MW-12A 13-Feb-17 H-3 - < 154 MW-12A 08-May-17 MN-54 < 3.1 MW-12A 08-May-17 C0-58 < 2.2 MW-12A 08-May-17 FE-59 < 2.8 MW-12A 08-May-17 C0-60 < 1.8 MW-12A 08-Mav-17 ZN-65 < 2.5 MW-12A 08-Mav-17 ZR-NB-95 < 2.9 MW-12A 08-May-17 1-131 < 0.482 MW-12A 08-May-17 CS-134 < 3.4 MW-12A 08-May-17 CS-137 < 2.9 MW-12A 08-May-17 BA-LA-140 < 2.0 MW-12A 08-May-17 H-3 < 151 MW-12A 24-AuQ-17 MN-54 < 3.2 MW-12A 24-Aug-17 C0-58 < 2.6 MW-12A 24-AuQ-17 FE-59 < 4.5 MW-12A 24-AuQ-17 C0-60 < 1.1 MW-12A 24-Aug-17 ZN-65 < 5.4 MW-12A 24-AuQ-17 ZR-NB-95 < 3.2 01 2017 Annual Radioactive Effluent Release Report 0)

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-12A 24-Aug-17 _ 1-131 < 0.218 MW-12A 24-Aug-17 CS-134 < 3.3 MW-12A 24-Aug-17 CS-137 < 4.2 MW-12A 24-Aug-17 BA-LA-140 < 2.4 MW-12A 24-Aug-17 H-3 < 149 MW-12A 06-Nov-17 MN-54 < 2.6 MW-12A 06-Nov-17 C0-58 < 2.7 MW-12A 06-Nov-17 FE-59 < 2.7 MW-12A 06-Nov-17 C0-60 < 1.7 MW-12A 06-Nov-17 ZN-65 < 4.4 MW-12A 06-Nov-17 ZR-NB-95 < 2.7 MW-12A 06-Nov-17 1-131 < 0.257 MW-12A 06-Nov-17 CS-134 < 3.6 MW-12A 06-Nov-17 CS-137 < 2.3 MW-12A 06-Nov-17 BA-LA-140 < 3.0 MW-12A 06-Nov-17 H-3 < 183 MW-12B 13-Feb-17 MN-54 < 3.6 MW-12B 13-Feb-17 C0-58 < 2.4 MW-12B 13-Feb-17 FE-59 < 4.2 MW-12B 13-Feb-17 C0-60 < 2.0 MW-12B 13-Feb-17 ZN-65 < 2.4 MW-12B 13-Feb-17 ZR-NB-95 < 4.1 MW-12B 13-Feb-17 1-131 < 0.386 MW-12B 13-Feb-17 CS-134 < 3.9 MW-12B 13-Feb-17 CS-137 < 2.5 MW-12B 13-Feb-17 BA-LA-140 < 2.5 MW-12B 13-Feb-17 H-3 < 154 MW-12B 08-May-17 MN-54 < 2.2 MW-12B 08-May-17 C0-58 < 1.5 MW-12B 08-Mav-17 FE-59 < 5.5 MW-12B 08-May-17 C0-60 < 1.6 MW-12B 08-May-17 ZN-65 < 2.7 MW-12B 08-May-17 ZR-NB-95 < 1.4 MW-128 08-Mav-17 1-131 < 0.320 MW-128 08-May-17 CS-134 < 2.4 MW-128 08-May-17 CS-~37 < 2.3 MW-12B 08-May-17 BA-LA-140 < 1.5 MW-12B 08-May-17 H-3 < 151 MW-12B 24-Aug-17 MN-54 < 5.0 MW-12B 24-Aug-17 C0-58 < 3.2 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-12B 24-Aug-17 FE-59 < 5.9 MW-12B 24-Aug-17 C0-60 < 3.1 MW-12B 24-Aug-17 ZN-65 < 7.6 MW-12B 24-Aug-17 ZR-NB-95 < 4.1 MW-12B 24-AuQ-17 1-131 < 0.217 MW-12B 24-Aug-17 CS-134 < 4.4 MW-12B 24-AuQ-17 CS-137 < 5.6 MW-12B 24-AuQ-17 BA-LA-140 < 2.0 MW-12B 24-Aug-17 H:..3 < 149 MW-12B 06-Nov-17 MN-54 < 2.6 MW-12B 06-Nov-17 C0-58 < 2.5 MW-12B 06-Nov-17 FE-59 < 3.3 MW-12B 06-Nov-17 C0-60 < 1.7 MW-12B 06-Nov-17 ZN-65 < 3.7 MW-12B 06-Nov-17 ZR-NB-95 < 2.3 MW-12B 06-Nov-17 1-131 < 0.370 MW-12B 06-Nov-17 CS-134 < 3.2 MW-12B 06-Nov-17 CS-137 < 2.7 MW-12B 06-Nov-17 BA-LA-140 < 4.5 MW-12B 06-Nov-17 H-3 < 183 WESTESW-W 13-Feb-17 MN-54 < 7.1 WESTESW-W 13-Feb-17 C0-58 < 4.9 WEST ESW-W 13-Feb-17 FE-59 < 11.7 WEST ESW-W 13-Feb-17 C0-60 < 4.7 WEST ESW-W 13-Feb-17 ZN-65 < 7.7 WESTESW-W 13-Feb-17 ZR-NB-95 < 5.2 WESTESW-W 13-Feb-17 1-131 < 0.259 WESTESW-W 13-Feb-17 CS-134 < 8.0 WESTESW-W 13-Feb-17 CS-137 < 6.3 WESTESW-W 13-Feb-17 BA-LA-140 < 6.0 WESTESW-W 13-Feb-17 H-3 1,316 +/- 130 c.n 2017 Annual Radioactive Effluent Release Report co

ENCLOSURES TO WCGS ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT Enclosure I contains the Offsite Dose Calculation Manual, AP 078-003, Revision 8 Enclosure II contains the Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program), AP 078-004, Revision 21 Enclosure Ill contains the Solid Radwaste Process Control Program, AP 31A-100, Revision 8 u,

2017 Annual Radioactive Effluent Release Report U)

W$LFCREEK 'NUCLEAR OPERATING CORPORATION April 25, 2018 Cynthia R. Hafenstine Manager Nuclear and Regulatory Affairs RA 18-0046 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: Wolf Creek Generating Station 2017 Annual Radioactive Effluent Release Report - Report 41 To Whom It May Concern:

The purpose of this letter is to transmit the enclosed Wolf Creek Generating Station (WCGS)

Annual Radioactive Effluent Release Report. The report covers the period from January 1, 2017 through December 31, 2017. It is being submitted pursuant to Section 5.6.3 of the WCGS Technical Specifications. The report provides procedures AP 07B-003, Revision 8, "Offsite Dose Calculation Manual," AP 07B-004, Revision 21, "Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program)," and AP 31A-100, Revision 8, "Solid Radwaste Process Control Program" that are included as part of the report in accordance with Section 5.5.1 of the WCGS Technical Specifications. These procedures have the changes made during the reporting period marked as required.

This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4204.

Sincerely, tr(/~ K.~}u_,

Cynthia R. Hafenstine CRH/rlt

Enclosure:

2017 Annual Radioactive Effluent Release Report - Report 41 cc: K. M. Kennedy (NRC), w/e B. K. Singal (NRC), w/e N .. H. Taylor (NRC), w/e :i;c4cf Senior Resident Inspector (NRC), w/e J \\_/(_

P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-883_1 An Equal Opportunity Employer M/F/HCNET

Enclosure to RA 18-0046 Wolf Creek Generating Station 2017 Annual Radioactive Effluent Release Report - Report 41 (297 pages including this page)

WOLF *cREEK NUCLEAR OPERATING CORPORATION 2017 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT Wolf Creek Generating Station Docket Number 50-482 Renewed Facility Operating License NPF-42 Report Number 41

WOLF CREEK NUCLEAR OPERATING CORPORATION 2017 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT This Annual Radioactive Effluent Release Report (ARERR) covers the operation of Wolf Creek Generating Station (WCGS) from January 1, 2017 through December 31, 2017. The ARERR includes a summary of the quantities of radioactive liquid and gaseous effluents and solid waste released from the unit in accordance with Technical Specification 5.6.3. The content of this ARERR is presented in the general format of Revision 1 of Regulatory Guide 1.21.

2017 Annual Radioactive Effluent Release Report

- - -- - - - - - - - - - - - ~

R. SUPPLEMENTAL fiNFORMATION A. Regulatory Umits The Offsite Dose Calculation Manual (ODCM) describes the methodology and parameters used in the calculation of offsite doses due to radioactive liquid and gaseous effluents. The following are limits required by the ODCM:

1. GASEOUS EFFLUENTS

• The dose rate due to radioactive materials released in gaseous effluents from the site to areas at and beyond the site boundary shall be limited to the following:

For noble gases: a dose rate less than or equal to 500 mrem/yr to the whole body and a dose rate less than or equal to 3000 mrem/yr to the skin, and For lodine-131, lodine-133, tritium and all radionuclides in particulate form with half-lives greater than 8 days: Less than or equal to 1500 mrem/yr to any organ.

The air dose due to noble gases released in gaseous effluents to areas at and beyond the site boundary shall be limited to the following:

During any calendar quarter: Less than or equal to 5 mrads for gamma radiation and less than or equal to 10 mrads for beta radiation, and During any calendar year: Less than or equal to 10 mrads for gamma radiation and less than or equal to 20 mrads for beta radiation.

The dose to a member of the public from lodine-131, lodine-133, tritium and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents released to areas at and beyond the site boundary shall be limited to the following:

During any calendar quarter: Less than or equal to 7.5 mrems to any organ, and During any calendar year: Less than or equal to 15 mrems to any organ.

2. LIQUID EFFLUENTS The concentration of radioactive material released in liquid effluents to unrestricted areas shall be limited to 10 times the limit specified in 10 CFR 20, Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.00E-04 µCi/ml total activity.

2017 Annual Radioactive Effluent Release Report

The dose or dose commitment to a member of the public from radioactive materials in liquid effluents released to unrestricted areas shall be limited:

During any calendar quarter to less than or equal to 1.5 mrems to the whole body and to less than or equal to 5 mrems to any organ, and During any calendar year to less than or equal to 3 mrems to the whole body and to less than or equal to 10 mrems to any organ.

B. Effluent Concell'!ltration limit (ECl)

The concentration of radioactive material released in liquid effluents to unrestricted areas shall be limited to 10 times the limit specified in 10 CFR 20, Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained. noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.00E-04 µCi/ml total activity. The percent of ECL values are found in Appendix A, Table 4A.

C. Average Energy Average energy of fission and activation gaseous effluents is not applicable. See ODCM section 3.1 for the methodology used in determining the release rate limits from noble gas releases.

D. Measurements and Approx:nmataons of Total Radioactivity Measurements of total radioactivity were performed in accordance with the sampling and analysis requirements of Tables 2-1 and 3-1 of the ODCM (Enclosure I).

Gamma spectroscopy is used as the primary method in determining radionuclide composition and concentration of liquid and gaseous effluents. Liquid composites are sent off site for analysis of Sr-89, Sr-90, Fe-55 and Ni-63. Gaseous composites are also sent off site for Sr-89 and Sr-90 analysis. Liquid scintillation and scintillation alpha counters are used to measure tritium and gross alpha.

E. Batch Releases

1. LIQUID Number of batch releases-40 Total time period for batch release-4,594 minutes Maximum time period for a batch release-190 minutes Average time period for batch releases-114.9 minutes Minimum time period for a batch release-39 minutes Average stream flow during periods of release of effluent into a flowing stream-Not applicable 2017 Annual Radioactive Effluent Release Report

2. GASEOUS Number of batch releases-49 Total time period for batch release-3,409 minutes Maximum time period for a batch release-491 minutes Average time period for batch releases-69.6 minutes Minimum time period for a batch release-28 minutes F. Contiru.mous Releases

1. GASES Continuous gaseous release pathways include the Unit Vent an~ Radwaste Vent.

2. LIQUID Continuous liquid release pathways include Steam Generator Slowdown, Lime Sludge Pond, Turbine Building Sump and Waste Water Treatment G. Atmormal Releases There was no unplanned or uncontrolled release of radioactive material from the site boundary in 2017.

Update on CR 84942: On June 14, 2013,* approximately 100 gallons of contaminated water leaked from the Spent Fuel Pool into the Component Cooling Water A train (CCW). The primary gamma emitting isotope (Cs-137) was removed from CCW by ion exchange to below detection limits. By the end of 2014, the CCW tritium concentration equalized in both trains to 1.00E-03 uCi/ml and no gamma emitting isotopes were detected. A portion of the CCW system was drained through the normal discharge path during the 2015 and 2016 refueling outages. After partially draining and refilling the system, tritium values in the CCW are now approximately 3.00E-04 µCi/ml. The CCW system is scheduled to be drained and monitored via the normal discharge path during the 2018 refueling outage for system maintenance. The following CRs document the event and evaluation: 70420, 70451, 70546 and 72212.

H. GASEOUS EFFLUENTS An elevated release pathway does not exist at WCGS. All airborne releases are considered to be ground level releases. Appendix A, Table 1A contains the summation of all gaseous effluent discharges, while Table 1B shows the quarterly sums of curies discharged and is divided according to batch or continuous mode.

&U. LIQUID EFFLUENTS Summary information can be found in Appendix A, Tables 2A and 28. Table 2A contains the summation of all liquid effluent discharges, while Table 28 reports the quarterly sums of total curies released and is divided according to batch or continuous mode.

2017 Annual Radioactive Effluent Release Report

IV. SOlHl WASTE Appendix A, Table 3 contains information on shipments of solid waste and irradiated fuel transported from the site during the period.

V. RADIOLOGICAL IMPACT ON MAN No ODCM dose limits were exceeded in 2017.

Dose calculations are performed for the limiting age group i.e., adult age group for the liquid pathway and the child age group for gaseous effluent organ doses. All calculations were performed in accordance with the methodology and parameters in the ODCM. A conservative error of thirty percent has been estimated in the effluent data for liquid and gaseous dose.

A. Dose Due to Liquid Effluents The dose due to liquid effluents was calculated in accordance with the methodology and parameters in the ODCM and can be found in Appendix A, Tables 48 and 4C. Table 4C is included to show the correlation between curies released and the associated 9alculated maximum organ dose.

Wolf Creek ODCM methodology is used to calculate the maximum organ dose which assumes that an individual drinks the water and eats the fish from the discharge point.

ODCM section 2.2 organ dose limits are used.

B. Dose Due to Gaseous Effluents The dose due to gaseous effluents can be found in Appendix A, Tables 40 and 4E and is calculated in accordance with the methodology and parameters in the ODCM. Table 4E is included to show the correlation between curies released and the associated calculated maximum organ dose. The gaseous pathway dose determination is met by the ODCM methodology of assigning all gaseous pathways to a hypothetical individual residing at the highest annual X/Q and D/Q location, which assumes that an individual actually resides at the site boundary. This results in a conservative estimate of dose to a member of the public, rather than determining each pathway dose for each release condition. ODCM section 3.2.2 organ dose limits are used.

2017 Annual Radioactive Effluent Release Report UI

C. Dose to a Member of the Public from Activities Inside the Site Boundary Four activities by members of the public were considered in this evaluation. The dose calculated for the maximum exposed individual is as follows:

Total Dose

1. Personnel making deliveries to the plant 3.20E-01 mrem/yr

2. Workers at the William Allen White 6.88E-03 mrem/yr Building located outside the protected area boundary

3. Use of the access road south of the 3.28E-03 mrem/yr Radwaste Building

4. Public use of the cooling lake during 4.09E-02 mrem/yr times when fishing was allowed The plant delivery calculations were based on deliveries being made 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> per week for 50 weeks per year. The William Allen White Building occupancy was based on normal working hours of 2,000 per year. The usage factor for the access road south of the Radwaste Building was 25 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> per year. The dose to anglers on the lake was based upon 3,768 hours0.00889 days <br />0.213 hours <br />0.00127 weeks <br />2.92224e-4 months <br /> (12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> a day for 314 days, based on the number of days that the lake was open to anglers). The Submersion, Inhalation and Ground Plane pathway doses were added to derive the total dose. All calculations were performed in accordance with the methodology and parameters in the ODCM.

Vt METEOROLOGICAL DATA Appendix B documents WCGS meteorological data for wind speed, wind direction and atmospheric stability. The meteorological data supplied in the tables covers the period from January 1, 2017 through December 31, 2017, and indicates the number of hours at each wind speed and direction for each stability class. All gaseous releases at the WCGS are ground level releases.

WCGS met Regulatory Guide 1.23 requirement for data recovery for all instruments.

VU. ADDITIONAL INFORMATION A. Unplanned Releases There were no unplanned releases in 2017.

2017 Annual Radioactive Effluent Release Report O')

Bs ODCM There were no changes made to the ODCM in 2017. The ODCM is in the form of two separate procedures. They are AP 078-003 (Offsite Dose Calculation Manual) and AP 078-004 (Offsite Dose Calculation Manual-Radiological Environmental Monitoring Program). Both procedures are attached as enclosures.

C. Radwaste Treatment System Changes There were no major changes made to the Liquid, Solid or Gaseous Radwaste Systems in 2017 that alter the capacity or handling of radioactive wastes or differ in the method of treatment.

The sluice line that routes BL (Reactor Makeup) water through the selected vessel was replaced in 2017. This will improve the residual dose that remains from the resin left in the lines.

D. Arun.nal Land Use Census Changes Per the Annual Land Use Census, three changes were identified for the nearest occupied residence in each sector. Five changes were noted for the nearest garden producing broadleaf vegetation. There were no changes regarding milk sample locations. No locations were identified that milked animals for human consumption.

!E. Liquid Holdup or Gas Storage Tanks No limits were exceeded in 2017 for Technical Requirement 3.10.1 (Liquid Holdup Tanks) or Technical Surveillance Requirement 3.10.3.1 (Gas Storage Tanks).

f. FunctiomiUty of Effluent Monitoring Instrumentation Effluent monitoring instrumentation returned to functional status within specified time.

2017 Annual Radioactive Effluent Release Report

G. Missed samples CR 00110361 On January 9, 2017, SYS GT-300 was performed to commence_ a planned Unit Vent outage. When non-isokinetic conditions were reached, GTRE21 B was incorrectly placed out of service by Control Room staff. However, GTRE21 B should have remained functional upon the loss of isokinetic flow. With the belief that GTRE21 B was out of service, a channel check on the monitor was not performed as required by the ODCM.

The Control Room staff also failed to communicate the status of GTRE21 B to Chemistry, which resulted in a grab sample not being obtained for a period of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. System trends were reviewed and showed no indications of an abnormal release. The procedures were updated to define monitor status during performance of the surveillance and to clarify impact of isokinetic flow.

CR 00112928 On May 10, 2017, power was unexpectedly removed from the two gaseous effluent radiation monitors GHRE10A/B (Radwaste Building Vent) and GTRE21A/B (Unit Vent).

The loss of power was due to a scheduled performance of a first time work activity to replace the Radiation Monitoring System inverter. Impact of the work activity did not include input from Chemistry. Once notification was made, alternate sample carts were set up and placed in service to meet the continuous filter flow requirements of ODCM Table 3-2. Continuous filtration was not in place for approximately 83 minutes on the Unit Vent monitor and 143 minutes on the Radwaste Vent monitor as required by AP 078-003, Table 3-2 (1.b., 1.c., 3.b. & 3.c.). The same work performed in 2018 was a success.

H. NE! Groundwater Protecth::m Industry h-nitiative See Appendix C.

I. Other CR 00112547 During the final review of radioactive liquid release permit packet U1LB2017-016, it was found that a technician incorrectly identified an energy line, which resulted in omitting an isotope (Mn-54) from the release permit calculations as required by AP 078-003, Offsite Dose Calculation Manual. The error was not caught by the technician performing the 2nd review. The tank was discharged using setpo'ints more conservative than if Mn-54 had been included. The low setpoint used for the release was 5.28E-04 µCi/ml. The setpoint including Mn-54 would have been 7.56E-04 µCi/ml. The permit post release calculations were later corrected to include the Mn-54 activity of 3.24E-08 uCi/ml.

2017 Annual Radioactive Effluent Release Report co

CARBON-14 (CR 36059)

Regulation 10CFR50.36a requires nuclear power plants to report quantities of principal radionuclides in the annual radioactive effluent release report. In the early 1980s, the NRC decided that C-14 radionuclide would not be required to be reported because it would not make a significant contribution to dose. Since this time, technology has advanced both for effluent isotopic reduction and isotope detection and estimation. It is more likely the C-14 meets the definition of a principal radionuclide in accordance with the newly published Regulatory Guide 1.21 Revision 2 (June 2009).

The NRC allows the reporting of this isotope based on estimation methods. EPRI TR 1021106 developed an estimation method based on peer-reviewed research that incorporates parameters of Wolf Creek's reactor design to estimate the gross amount of C-14 produced annually. This value is fed into additional calculations, based on Regulatory Guide 1.109, Calculation of Annual Doses to Man From Routine Releases of Reactor Effluents For the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I, to provide an estimation of annual dose. Based on the 2010 theoretical calculations and assuming the maximum percentage of inorganic C-14 compounds (30%), Wolf Creek has estimated the annual release of C-14 to be 10.7 curies and to contribute maximum dose values of 1.30 mrem/yr child bone dose and 0.259 mrem/yr child total body. This is well below the 10CFR50, Appendix I, ALARA design objective of 15 mrem/yr. Additionally, this value is on par with the dose expected from naturally occurring radiocarbon.

2017 Annual Radioactive Effluent Release Report

Appendix A 2017 Annual Radioactive Effluent Release Report L

TABLE 1A:

GASEOUS EFFLUENTS-SUMMATION OF ALL RELEASES Unit Quarter 1 Quarter 2 Quarter 3 Quarter4 Est. Total Error,%

Fission & Activation Gases Total Release Ci 7.02E-02 8.72E-02 5.14E-01 2.76E+OO 3.00E+01 Average Release Rate µCi/sec 9.03E-03 1.11 E-02 6.47E-02 3.47E-01 for period Percent of ODCM limit  % 8.74E-04 8.32E-04 9.26E-04 2.30E-03 Iodines Total lodine-131 Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 3.00E+01 Average Release Rate µCi/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO for period Percent of ODCM limit  % O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Particulates Particulates with half- Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 3.00E+01 fives >8 days Average Release Rate µCi/sec O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO for period Percent of ODCM limit  % O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Gross alpha radioactivity Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 3.00E+01 Tritium Total release Ci 4.93E+OO 1.11E+01 1.75E+01 8.54E+OO 3.00E+01 Average Release Rate µCi/sec 6.34E-01 1.41 E+OO 2.20E+OO 1.07E+OO for period Percent of ODCM limit  % 4.65E-02 L1 .04E-01 1.65E-01 8.06E-02

~

~

2017 Annual Radioactive Effluent Release Report

TABLE 18:

GASEOUS EFFLUENTS-GROUND LEVEL RELEASES-BATCH MODE j Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Fission gases Argon-41 Ci 6.73E-02 6.32E-02 5.39E-02 7.30E-02 Xenon-133 Ci 2.88E-03 2.39E-02 1.16E-01 1.88E-01 Krypton-85 Ci O.OOE+OO O.OOE+OO O.OOE+OO 2.58E-01 Krypton-85m Ci <1.31E-03 <1.16E-03 <9.56E-04 <1.20E-03 Krypton-87 Ci <2.34E-03 <2.06E-03 <1.?0E-03 <2.14E-03 Krypton-88 Ci <5.32E-03 <4.68E-03 <3.87E-03 <4.86E-03 Xenon-133m Ci <5.64E-03 <4.96E-03 <4.10E-03 1.00E-04 Xenon-135 Ci <1.05E-03 <9.22E-04 <7.62E-04 <9.59E-04 Xenon-135m Ci <2.74E-02 <2.41E-02 <1.99E-02 <2.51E-02 Xenon-138 Ci <4.84E-02 <4.26E-02 <3.52E-02 <4.43E-02 Xenon-131m Ci O.OOE+OO O.OOE+OO O.OOE+OO 3.10E-03 Total for period* Ci 7.02E-02 8.72E-02 1.?0E-01 5.22E-01 Iodines lodine-131 Ci <7.98E-08 <7.02E-08 <5.BOE-08 <7.30E-08 lodine-133 Ci <7.98E-06 <7.02E-06 <5.BOE-06 <7.30E-06 Total for period* Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Particulates Strontium-89 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Strontium-90 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cesium-134 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cesium-137 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Manganese-54 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 lron-59 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cobalt-58 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cobalt-60 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Zinc-65 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Molybdenum-99 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cerium-141 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Cerium-144 Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07 Total for period* Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Tritium Ci 1.01E-01 2.79E-01 4.02E-01 1.48E-01 Gross Alpha Ci <7.98E-07 <7.02E-07 <5.BOE-07 <7.30E-07

• Less than values are not included in the summation for the total release values.

2017 Annual Radioactive Effluent Release Report

TABLE 18:

GASEOUS EFFLUENTS-GROUND LEVEL RELEASES -CONTINUOUS MODE j Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 I I I I I I Fission gases Argon-41 Ci <8.21E+OO <8.67E+OO <8.71E+OO <8.32E+OO Xenon-133 Ci <1.19E+01 <1.26E+01 3.44E-01 2.24E+OO Krypton-85m Ci <3.85E+OO <4.07E+OO <4.09E+OO <3.91E+OO Krypton-87 Ci <6.87E+OO <7.25E+OO <7.28E+OO <6.96E+OO Krypton-88 Ci <1.56E+01 <1.65E+01 <1.65E+01 <1.58E+01 Xenon-133m Ci <1.66E+01 <1.75E+01 <1.76E+01 <1.68E+01 Xenon-135 Ci <3.07E+OO <3.24E+OO <3.26E+OO <3.11E+OO Xenon-135m Ci <8.03E+01 <8.48E+01 <8.52E+01 <8.14E+01 Xenon-138 Ci <1.42E+02 <1.50E+02 <1.51 E+02 <1.44E+02 Total for period Ci O.OOE+OO O.OOE+OO 3.44E-01 2.24E+OO Iodines lodine-131 Ci <2.34E-04 <2.47E-04 <2.48E-04 <2.37E-04 lodine-133 Ci <2.34E-02 <2.47E-02 <2.48E-02 <2.37E-02 Total for period Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Particulates Strontium-89 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Strontium-90 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cesium-134 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cesium-137 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Manganese-54 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03

' lron-59 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cobalt-58 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cobalt-60 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Zinc-65 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Molybdenum-99 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cerium-141 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Cerium-144 Ci <2.34E-03 <2.47E-03 <2.48E-03 <2.37E-03 Total for period Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO I Tritium I Ci I 4.83E+OO I 1.08E+01 I 1.71E+01 I 8.40E+OO I j Gross Alpha Ci <2.34E-03 I <2.47E-03 I <2.48E-03 I <2.37E-03 I I I

• Less than values are not included in the summation for the total release values.

~

2017 Annual Radioactive Effluent Release Report w

TABLE 2A:

LIQUID EFFLUENTS-SUMMATION OF All RELEASES Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 Est. Total Error,%

FISSION AND ACTIVATION PRODUCTS Total Release (not including Ci 2.22E-03 2.46E-03 9.65E-04 4.41E-04 3.00E+01 tritium, gases, alpha)

Average Diluted µCi/ 8.65E-12 9.08E-12 3.47E-12 1.62E-12 Concentration during period ml Percent of Applicable Limit  % 4.45E-02 4.92E-02 1.93E-02 8.82E-03 TRITIUM Total release Ci 1.421;:+01 4.45E+01 3.98E+02 5.16E+02 3.00E+01 Average Diluted µCi/ 5.53E-08 1.64E-07 1.43E-06 1.89E-06 Concentration during period ml Percent of Applicable Limit  % 5.53E-03 1.64E-02 1.43E-01 1.89E-01 DISSOLVED AND ENTRAINED GASES Total release Ci O.OOE+OO O.OOE+OO 3.12E-02 1.04E-01 3.00E+01 Average Diluted µCi/ O.OOE+OO O.OOE+OO 1.12E-10 3.81E-10 Concentration during period ml Percent of Applicable Limit  % O.OOE+OO O.OOE+OO 5.61 E-05 1.91E-04 GROSS ALPHA RADIOACTIVITY J Total Release Ci J O.OOE+OO J O.OOE+OO J O.OOE+OO J O.OOE+OO J 3.00E+01 J Volume of waste released L 9.34E+07 1.70E+08 9.70E+07 9.34E+07 3.00E+01 (prior to dilution)

Volume of dilution water used L 2.57E+11 2.71E+11 2.78E+11 2.73E+11 3.00E+01 during period 2017 Annual Radioactive Effluent Release Report

TABLE 2B: LIQUID EFFLUENTS- BATCH MODE I Nuclides Released Unit I Quarter 1 I Quarter 2 I Quarter 3 I Quarter 4 Fission & Activation Products Strontium-89 Ci <1.26E-05 <1.45E-05 <2.30E-05 <2.68E-05 Strontium-90 Ci <1.26E-05 <1.45E-05 <2.30E-05 <2.68E-05 Cesium-134 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Cesium-137 Ci 1.64E-05 5.45E-06 <2.30E-04 <2.68E-04 Cobalt-57 Ci 1.38E-05 1.01 E-05 3.12E-06 O.OOE+OO Cobalt-58 Ci 2.14E-03 9.15E-04 3.06E-04 1.01E-04 Cobalt-60 Ci 4.65E-05 4.94E-05 3.62E-05 2.43E-05 lron-55 Ci <2.52E-04 <2.89E-04. <4.59E-04 <5.35E-04 lron-59 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Zinc-65 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Manganese-54 Ci <1.26E-04 1.37E-06 <2.30E-04 <2.68E-04 Nickel-63 Ci <2.52E-04 1.13E-03 4.59E-04 3.16E-04 Antimony-125 Ci 1.12E-05 O.OOE+OO 1.60E-04 O.OOE+OO Telerium-125m Ci O.OOE+OO 3.50E-04 O.OOE+OO O.OOE+OO Molybdenum-99 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Cerium-141 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 Cerium-144 Ci <1.26E-04 <1.45E-04 <2.30E-04 <2.68E-04 lodine-131 Ci <2.52E-04 <2.89E-04 <4.59E-04 <5.35E-04 Total for period* Ci 2.22E-03 2.46E-03 9.65E-04 4.41E-04 Dissolved & Entrained Gases Xe-133 Ci <2.52E-03 <2.89E-03 2.68E-02 9.28E-02 Xe-133m Ci <2.52E-03 <2.89E-03 4.72E-05 5.04E-04 Xe-135 Ci <2.52E-03 <2.89E-03 <4.59E-03 9.22E-06 Xenon-131m Ci <2.52E-03 <2.89E-03 1.50E-03 2.62E-03 Krypton-85 Ci <2.52E-03 <2.89E-03 2.82E-03 7.98E-03 Total for period* Ci O.OOE+OO O.OOE+OO 3.12E-02 1.04E-01 Tritium Ci 1.26E+01 4.25E+01 3.97E+02 5.14E+02 Gross Alpha Ci <2.52E-05 <2.89E-05 <4.59E-05 <5.35E-05

• Less than values are not included in the summation for the total release values.

2017 Annual Radioactive Effluent Release Report

TABLE 28: LIQUID EFFLUENTS-CONTINUOUS MODE

\ Nuclides Released Unit * \ Quarter 1 \ Quarter 2 \ Quarter 3 \ Quarter 4 Fission & Activation Products Strontium-89 Ci <4.66E-03 <8.45E-03 <4.83E-03 <4.64E-03 Strontium-90 Ci <4.66E-03 <8.45E-03 <4.83E-03 <4.64E-03 Cesium-134 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cesium-137 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cobalt-58 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cobalt-60 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 lron-55 Ci <9.31 E-02 <1.69E-01 <9.65E-02 <9.28E-02 lron-59 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Zinc-65 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Manganese-54 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Nickel-63 Ci <9.31 E-02 <1.69E-01 <9.65E-02 <9.28E-02 Molybdenum-99 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cerium-141 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 Cerium-144 Ci <4.66E-02 <8.45E-02 <4.83E-02 <4.64E-02 lodine-131 Ci <9.31E-02 <1.69E-01 <9.65E-02 <9.28E-02 Total for period* Ci O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Dissolved & Entrained Gases None discharged Ci <9.31 E-01 I <1.69E+OO I <9.65E-01 I <9.28E-01 I Tritium Ci 1.62E+OO 1.96E+OO 1.28E+OO 1.77E+OO Gross Alpha Ci <9.31E-03 <1.69E-02 <9.65E-03 <9.28E-03

• Less than values are not included in the summation for the total release values.

2017 Annual Radioactive Effluent Release Report

TABLE 3:

SOLID WASTE AND IRRADIATED FUEL SHIPMENTS A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (NOT IRRADIATED FUEL)

Units 1-Year Est. Total

1. Type of Waste Period Error(%)

3*

a. Spent resins, filter sludges, evaporator bottoms, etc. m 1.73E+01 Ci 5.93E+OO 2.50E+01 3*

b. Dry compressible waste, contaminated equip., etc. m 2.92E+02 Ci 3.68E-01 2.50E+01 C. Irradiated components, control rods, etc. m3* O.OOE+OO Ci O.OOE+OO 3*

d. Other m O.OOE+OO Ci O.OOE+OO

• This is the volume sent offsite for volume reduction prior to disposal (waste volume).

2. Estimate of Major Nuclide Composition (by Type of Waste) [Nuclides listed with %

abundance greater than 10%]

a. Spent resins, filter sludges, evaporator bottoms, etc.

Nuclide  % Abundance Curies H-3 30.58 1.81 E+OO Fe-55 11.02 6.53E-01 Co-60 13.11 7.77E-01 Ni-63 37.82 2.24E+OO

b. Dry compressible waste, contaminated equipment, etc.

Nuclide  % Abundance Curies C0-60 37.21 1.37E-01 CS-137 57.89 2.13E-01

c. Irradiated components, control rods, etc. - None

d. Other - None 2017 Annual Radioactive Effluent Release Report

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 7 Truck Energy Solutions (Hittman Transport Services) Oak Ridge, TN (Bear Creek) 7 Truck Energy Solutions Kingston, TN (Hittman Transport Services)

(Gallaher Road Facility)

4. Class of Solid Waste

5. Type of Container

d. Not appimcabDe

6. Solidification Agent B. IRRADIATED FUEL SHIPMENTS (DISPOSITION)

No irradiated fuel shipments occurred during the 2017 period .

. 2017 Annual Radioactive Effluent Release Report

~ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -----

TABLE 4A: 2017 EFFLUENT CONCENTRATION LIMITS Average Diluted 10 CFR 20 Nuclides Curies Concentration EGL %EGL

(µCi/ml) (µCt!ml)

Tritium 9.72E+02 9.00E-07 1.00E-03 9.00E-02 Manganese-54 1.37E-06 1.27E-15 3.00E-05 4.23E-09 Cobalt-57 2.70E-05 2.50E-14 6.00E-05 4.17E-08 Cobalt-58 3.46E-03 3.21E-12 2.00E-05 1.60E-05 Coba/t-60 1.56E-04 1.45E-13 3.00E-06 4.83E-06 Nickel-63 1.90E-03 1.76E-12 1.00E-04 1.76E-06 Antimony-125 1.71 E-04 1.59E-13 3.00E-05 5.29E-07 Tellurium-125m 3.50E-04 3.24E-13 2.00E-05 1.62E-06 Cesium-137 2.18E-05 2.02E-14 1.00E-06 2.02E-06 Xenon-133m 5.51E-04 5.11E-13 2.00E-04 2.55E-07 Xenon-133 1.20E-01 1.11E-10 2.00E-04 5.54E-05 Xenon-135 9.22E-06 8.54E-15 2.00E-04 4.27E-09 Krypton-85 1.08E-02 1.00E-11 2.00E-04 5.00E-06 Xenon-131m 4.12E-03 3.82E-12 2.00E-04 1.91 E-06 2017 Annual Radioactive Effluent Release Report

TABLE 4B: 2017 UQlHD CUMULATIVE DOSE

SUMMARY

ODCM ODCM Limit  % of Limit QUARTER 1 OF 2017 {MREM) Cacua I I t ed Dose (mrem )

Total Dose for Bone 5.23E-05 5.00E+OO 1.05E-03 Total Dose for Liver 1.27E-03 5.00E+OO 2.54E-02 Total Dose for Total Body 1.25E-03 1.SOE+OO 8.33E-02 Total Dose for Thyroid 1.20E-03 5.00E+OO 2.40E-02 Total Dose for Kidney 1.22E-03 5.00E+OO 2.44E-02 Total Dose for Lung 1.20E-03 5.00E+OO 2.40E-02 Total Dose for GI-LLI 1.26E-03 5.00E+OO 2.52E-02 QUARTER 2 OF 2017 (MREM)

Total Dose for Bone 4.14E-04 5.00E+OO 8.28E-03 Total Dose for Liver 4.22E-02 5.00E+OO 8.44E-01 Total Dose for Total Body 4.22E-02 1.50E+OO 2.81E+OO Total Dose for Thyroid 4.21 E-02 5.00E+OO 8.42E-01 Total Dose for Kidney 4.22E-02 5.00E+OO 8.44E-01 Total Dose for Lung 4.21 E-02 5.00E+OO 8.42E-01 Total Dose for GI-LLI 4.22E-02 5.00E+OO 8.44E-01 QUARTER 3 OF 2017 (MREM)

Total Dose for Bone 1.58E-04 5.00E+OO 3.16E-03 Total Dose for Liver 3.54E-02 5.00E+OO 7.0BE-01 Total Dose for Total Body 3.54E-02 1.50E+OO 2.36E+OO Total Dose for Thyroid 3.54E-02 5.00E+OO 7.0BE-01 Total Dose for Kidney 3.54E-02 5.00E+OO 7.0BE-01 Total Dose for Lung '

3.54E-02 5.00E+OO 7.0BE-01 Total Dose for GI-LLI 3.54E-02 5.00E+OO 7.0BE-01 QUARTER 4 OF 2017 (MREM)

Total Dose for Bone 1.11 E-04 5.00E+OO 2.22E-03 Total Dose for Liver 4.82E-02 5.00E+OO 9.64E-01 Total Dose for Total Body 4.82E-02 1.50E+OO 3.21E+OO Total Dose for Thyroid 4.82E-02 5.00E+OO 9.64E-01 Total Dose for Kidney 4.82E-02 5.00E+OO 9.64E-01 Total Dose for Lung 4.82E-02 5.00E+OO 9.64E-01 Total Dose for GI-LLI 4.82E-02 5.00E+OO 9.64E-01 TOTALS FOR 2017 (MREM)

Total Dose for Bone 7.35E-04 1.00E+01 7.35E-03 Total Dose for Liver 1.27E-01 1.00E+01 1.27E+OO Total Dose for Total Body 1.27E-01 3.00E+OO 4.23E+OO Total Dose for Thyroid 1.27E-01 1.00E+01 1.27E+OO Total Dose for Kidney 1.27E-01 1.00E+01 1.27E+OO Total Dose for Lung 1.27E-01 1.00E+01 1.27E+OO Total Dose for GI-LLI 1.27E-01 1.00E+01 1.27E+OO 2017 Annual Radioactive Effluent Release Report

TABLE 4C:

LIQUID CUMULATIVE DOSE

SUMMARY

Quarter 1 Quarter 2 Quarter 3 Quarter 4 Total Fission & Activation Products*

Total Release (Ci) 2.22E-03 2.46E-03 9.65E:-04 4.41E-04 6.09E-03 Maximum Organ Dose (mrem) 7.48E-05 4.14E-04 1.58E-04 1.11 E-04 7.35E-04 Organ Dose Limit (mrem) 5.00E+OO 5.00E+OO 5.00E+OO 5.00E+OO 1.00E+01 Percent of Limit 1.50E-03 8.27E-03 3.16E-03 2.22E-03 7.35E-03 Tritium Total Release (Ci) 1.42E+01 4.45E+01 3.98E+02 5.16E+02 9.72E+02 Maximum Organ Dose (mrem) 1.20E-03 4.21 E-02 3.54E-02 4.82E-02 1.27E-01 Organ Dose Limit (mrem) 5.00E+OO 5.00E+OO 5.00E+OO 5.00E+OO 1.00E+01 Percent of Limit 2.39E-02 8.43E-01 7.08E-01 9.65E-01 1.27E+OO Dissolved & Entrained Gases I Total Release (Ci) I O.OOE+OO I O.OOE+OO I 3.12E-02 11.04E-01 I 1.35E-01 Gross Alpha Radioactivity I Total Release (Ci) I O.OOE+OO I O.OOE+OO I O.OOE+OO I O.OOE+OO I O.OOE+OO I

• Does not include H-3, gases or alpha 2017 Annual Radioactive Effluent Release Report

TABLE 4D: 2017 GASEOUS CUMULATIVE DOSE

SUMMARY

ODCM ODCM Limit % of Limit QUARTER 1 OF 2017 (MREM) Cacu I Iat e d Dose ( mrem )

Total Dose for Bone O.OOE+OO 7.50E+OO O.OOE+OO Total Dose for Liver 3.49E-03 7.50E+OO 4.65E-02 Total Dose for Total Body 3.49E-03 7.50E+OO 4.65E-02 Total Dose for Thyroid 3.49E-03 7.50E+OO 4.65E-02 Total Dose for Kidney 3.49E-03 7.50E+OO 4.65E-02 Total Dose for Lung 3.49E-03 7.SOE+OO 4.65E-02 Total Dose for GI-LLI 3.49E-03 7.50E+OO 4.65E-02 QUARTER 2 OF 2017 (MREM)

Total Dose for Bone O.OOE+OO 7.50E+OO O.OOE+OO Total Dose for Liver 7.84E-03 7.50E+OO 1.05E-01 Total Dose for Total Body 7.84E-03 7.50E+OO 1.05E-01 Total Dose for Thyroid 7.84E-03 7.50E+OO 1.05E-01 Total Dose for Kidney 7.84E-03 7.SOE+OO 1.05E-01 Total Dose for Lung 7.84E-03 7.SOE+OO 1.05E-01 Total Dose for GI-LLI 7.84E-03 7.50E+OO 1.05E-01 QUARTER 3 OF 2017 (MREM)

Total Dose for Bone O.OOE+OO 7.50E+OO O.OOE+OO Total Dose for Liver 1.24E-02 7.50E+OO 1.65E-01 Total Dose for Total Body 1.24E-02 7.50E+OO 1.65E-01 Total Dose for Thyroid 1.24E-02 7.50E+OO 1.65E-01 Total Dose for Kidney 1.24E-02 7.SOE+OO 1.65E-01 Total Dose for Lung 1.24E-02 7.50E+OO 1.65E-01 Total Dose for GI-LLI 1.24E-02 7.50E+OO 1.65E-01 QUARTER 4 OF 2017 (MREM}

Total Dose for Bone O.OOE+OO 7.50E+OO O.OOE+OO Total Dose for Liver 6.04E-03 7.50E+OO 8.05E-02 Total Dose for Total Body 6.04E-03 7.SOE+OO 8.05E-02 Total Dose for Thyroid 6.04E-03 7.SOE+OO 8.05E-02 Total Dose for Kidney 6.04E-03 7.SOE+OO 8.05E-02 Total Dose for Lung 6.04E-03 7.SOE+OO 8.05E-02 Total Dose for GI-LLI 6.04E-03 7.50E+OO 8.05E-02 TOTALS FOR 2017 (MREM)

Total Dose for Bone O.OOE+OO 1.50E+01 O.OOE+OO Total Dose for Liver 2.97E-02 1.50E+01 1.98E-01 Total Dose for Total Body 2.97E-02 1.50E+01 1.98E-01 Total Dose for Thyroid 2.97E-02 1.50E+01 1.98E-01 Total Dose for Kidney 2.97E-02 1.50E+01 1.98E-01 Total Dose for Lung 2.97E-02 1.50E+01 1.98E-01 Total Dose for GI-LLI 2.97E-02 1.50E+01 1.98E-01 2017 Annual Radioactive Effluent Release Report

TABLE 4E: 2017 GASEOUS CUMULATIVE DOSE

SUMMARY

I Quarter 1 I Quarter 2 I Quarter 3 I Quarter 4 I Total Fission & Activation Gases Total Release (Ci) 7.02E-02 8.72E-02 5.14E-01 2.76E+OO 3.43E+OO Total Gamma Air Dose (mrad) 4.37E-05 4.16E-05 4.63E-05 1.0?E-04 2.39E-04 Gamma Air Dose Limit (mrad) 5.00E+OO 5.00E+OO 5.00E+OO 5.00E+OO 1.00E+01 Percent of Gamma Air Dose Limit 8.74E-04 8.32E-04 9.26E-04 2.15E-03 2.39E-03 Total Beta Air Dose (mrad) 1.56E-05 1.62E-05 4.60E-05 2.30E-04 3.08E-04 Beta Air Dose Limit (mrad) 1.00E+01 1.00E+01 1.00E+01 1.00E+01 2.00E+01 Percent of Beta Air Dose Limit 1.56E-04 1.62E-04 4.60E-04 2.30E-03 1.54E-03 Particulates Total Particulates (Ci) O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Maximum Organ Dose (mrem) O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Organ Dose Limit (mrem) 7.50E+OO 7.50E+OO 7.50E+OO 7.50E+OO 1.50E+01 Percent of Limit O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Tritium Total Release (Ci) 4.93E+OO 1.11E+01 1.75E+01 8.54E+OO 4.20E+01 Maximum Organ Dose (mrem) 3.49E-03 7.84E-03 1.24E-02 6.04E-03 2.97E-02 Organ Dose Limit (mrem) 7.50E+OO 7.50E+OO 7.50E+OO 7.50E+OO 1.50E+01 Percent of Limit 4.65E-02 1.04E-01 1.65E-01 8.06E-02 1.98E-01 Iodine Total Release (Ci) O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Maximum Organ Dose (mrem) O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO Organ Dose Limit (mrem) 7.50E+OO 7.50E+OO 7.50E+OO 7.50E+OO 1.50E+01 Percent of Limit O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO O.OOE+OO 2017 Annual Radioactive Effluent Release Report

CALCULATIONS:

Gases:

1. The percent of ODCM limit for fission and activation gases is calculated using the following methodology: (The larger value calculated between Gamma and Beta air dose is listed as the

% of ODCM Limit)

(Quarterly Total Beta Airdose)(lOO)

% of ODCM Limit= - - - - - -- -m-r_a_d_ _ _ __

10 OR (Quarterly Total Gamma Airdose)(lOO)

% of ODCM Limit= - - - - - --m-r-ad _ _ _ _ __

5

2. The percent of ODCM limit for iodine is calculated using the following methodology:

(Total Curies of Iodine - 131)(100)

%ofODCMLimit= lC .

urze

3. The percent of ODCM limit for particulates is calculated using the following methodology:

(Highest Organ Dose due to Particulates)(lOO)

% of ODCM Limit= - - - - - - - - - - - - - - - - -

7.5 mrem

4. The percent of ODCM limit for tritium is calculated using the following methodology (this type of methodology is used since the Wolf Creek ODCM ties release limits to doses rather than curie release rates:

• (Highest Organ Dose due to H - 3)(100)

% of ODCM Limit= S 7 . mrem

5. Less than values for Noble Gases are calculated using the Lower Limit of Detection (LLD) values obtained at WCGS multiplied by the volume of air discharged during the respective quarter. For the Halogens and Particulates, the ODCM LLD values are used.

Liquids:

1. The Applicable Limit for fission and activation products at WCGS is 5 curies per year (reference 10CFRSO, Appendix I, paragraph A.2). The percent of Applicable Limit is derived by the following:

• (Total Release Ci)(lOO)

% of Applicable Limit= Ci 5

2. The percent of Applicable Limit for tritium is derived by the following formula:

• * . _ (Average Diluted Concentration)(lOO) 0 Vo of Applicable Limit - (ECL*)

• The EGL can be found in 10CFR20, Appendix 8, Table 2 2017 Annual Radioactive Effluent Release Report

3. The percent of Applicable Limit for dissolved and entrained gases is derived by the following formula:

• *

• _ (Average Diluted Concentration)(lOO) 0 Vo of Applicable Limit - (Z.OOE _ 04 *)

• From ODCM, section 2.1

4. Less than values are calculated using the Lower Limit of Detection (LLD) values listed in Table 2-1 of the ODCM multiplied by the volume of waste discharged during the respective quarter.

The less than values are not included in the summation for the total release values.

I\)

2017 Annual Radioactive Effluent Release Report (J1

Appendix B Meteorological Data 2017 Annual Radioactive Effluent Release Report

HOURS AT EACH WIND SPEED AND DIRECTION This section documents WCGS meteorological data for wind speed, wind direction, and atmospheric stability.

The meteorological data supplied in the following tables covers the period from January 1, 2017, through December 31, 2017, and indicates the number of hours at each wind speed and direction for each stability class. All gaseous releases at the WCGS are ground level releases.

Wolf Creek Generating Station met Regulatory Guide 1.23 requirement for data recovery, for all instruments. The instruments, both at 10 and 60 meters, met or exceeded a 90% meteorological data recovery for 2017.

2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: A Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0.00 0.75 5.75 12.75 2.75 0.00 22.00 NNE 0.50 3.25 18.50 7.75 1.25 0.00 31.25 NE 1.75 12.50 19.00 3.25 0.00 0.00 36.50 ENE 0.25 6.00 19.50 4.25 0.50 0.00 30.50 E 0.25 5.50 11.75 0.75 0.00 0.00 18.25 ESE 0.25 4.50 10.50 0.00 0.00 0.00 15.25 SE 0.25 5.75 22.50 7.75 0.00 0.00 36.25 SSE 0.25 3.50 56.25 45.50 15.25 1.00 121.75 s 1.25 1.00 41.25 102.00 57.25 17.25 220.00 SSW 1.00 0.75 22.75 31.75 10.75 1.50 68.50 SW 0.25 1.75 15.00 3.50 0.75 0.25 21.50 WSW 0.50 2.25 7.75 5.50 0.50 0.00 16.50 w 0.25 7.00 12.75 20.50 2.25 0.50 43.25 WNW 0.00 6.00 10.75 12.50 12.50 1.00 42.75 NW 0.00 4.50 11.50 12.75 7.25 0.50 36.50 NNW 0.25 2.50 13.50 15.25 3.75 0.00 35.25 Total 7.00 67.50 299.00 285.75 114.75 22.00 796.00 Hours of Calm (<1.0 mph): 14.75 N

2017 Annual Radioactive Effluent Release Report co

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: B Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 .13-18 19-24 > 24 Total N 0.00 3.00 9.25 6.50 4.00 0.25 23.00 NNE 0.50 8.75 18.00 8.00 0.25 0.00 35.50 NE 1.00 15.25 9.25 1.75 0.00 0.00 27.25 ENE 0.50 13.25 11.25 2.50 0.25 0.00 27.75 E 0.50 12.25 6.25 0.75 0.00 0.00 19.75 ESE 0.75 11.50 6.50 0.50 0.25 0.00 19.50 SE 0.25 10.00 12.50 2.25 0.00 0.00 25.00 SSE 1.75 17.25 28.50 8.50 2.50 0.00 58.50 s 0.50 6.75 24.50 20.00 7.25 2.25 61.25 SSW 1.00 3.75 19.00 15.00 5.00 1.25 45.00 SW 0.25 7.75 8.50 1.50 1.00 0.25 19.25 WSW 1.75 9.25 3.25 1.25 0.25 0.00 15.75 w 0.75 6.00 6.00 1.75 0.25 0.00 14.75 WNW 2.00 5.75 6.75 5.75 4.50 0.00 24.75 NW 0.75 7.00 18.75 13.25 4.50 0.00 44.25 NNW 0.00 2.50 15.75 13.50 7.50 0.25 39.50 Total 12.25 140.00 204.00 102.75 37.50 4.25 500.75 Hours of Calm (<1.0 mph): 3.25 2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: C Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 0.00 1.75 10.25 9.75 2.00 0.00 23.75 NNE 2.75 15.50 27.25 6.00 0.25 0.00 51.75 NE 3.00 22.00 4.50 3.50 0.00 0.00 33.00 ENE 2.75 17.50 .9.75

• 0.50 0.00 0.00 30.50 E 2.00 17.75 4.50 2.00 0.00 0.00 26.25 ESE 2.00 15.50 5.25 0.25 0.00 0.00 23.00 SE 1.50 14.00 11.50 1.50 0.00 0.00 28.50 SSE 1.25 36.25 21.75 9.75 4.75 0.00 73.75 s 2.50 14.00 29.00 18.00 10.75 3.75 78.00 SSW 2.75 8.00 21.50 16.00 10.50 4.00 62.75 SW 3.00 10.50 8.00 1.25 0.25 0.00 23.00 WSW 2.75 11.00 5.50 0.25 0.25 0.00 19.75 w 1.00 7.75 4.75 3.00 1.25 0.00 17.75 WNW 1.75 5.00 7.00 5.25 5.00 0.75 24.75 NW 1.50 8.25 15.75 14.50 7.50 0.50 48.00 NNW 0.25 5.25 20.50 10.50 6.25 1.75 44.50 Total 30.75 210.00 206.75 102.00 48.75 10.75 609.00 Hours of Calm (<1.0 mph): 4.25 w

2017 Annual Radioactive Effluent Release Report 0

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: D Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 2.00 29.25 72.75 61.75 12.75 0.50 179.25 NNE 18.75 124.25 145.25 36.25 1.25 0.00 325.75 NE 19.75 110.50 66.50 10.25 0.25 0.00 207.25 ENE 12.00 69.25 71:75 14.00 0.75 0.00 167.75 E 11.75 47.75 28.25 4.00 0.00 0.00 91.75 ESE 17.25 52.75 31.50 4.75 0.50 0.00 106.75 SE 11.00 72.00 64.75 9.00 0.00 0.00 156.75 SSE 12.75 92.50 138.75 *81.15 19.50 0.75 352.00 s 8.75 74.75 154.25 141.25 69.75 35.25 484.00 SSW 6.75 55.75 94.25 81.00 26.00 72.00 335.75 SW 10.50 50.00 21.25 5.25 2.00 0.25 89.25 WSW 5.75 19.00 14.25 7.50 2.75 0.00 49.25 w 5.75 21.00 27.50 16.50 2.75 0.50 74.00 WNW 3.00 15.50 48.75 40.50 7.25 1.25 116.25 NW 4.00 29.25 125.50 72.75 17.50 5.25 254.25 NNW 3.50 37.75 104.00 92.75 35.75 8.25 282.00 Total 153.25 901.25 1209.25 685.25 198.75 124.00 3272.00 Hours of Calm (<1.0 mph): 32.75 2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: E Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7.00 36.00 45.75 13.00 0.00 0.00 101.75 NNE 22.00 56.00 33.75 8.25 0.00 0.00 120.00 NE 27.50 47.00 22.50 1.75 0.00 0.00 98.75 ENE 16.00 38.00 25.25 2.00 0.00 0.00 81.25 E 26.25 36.50 14.50 1.75 0.00 0.00 79.00 ESE 23.00 77.25 18.75 2.00 0.00 0.00 121.00 SE 13.00 116.75 56.25 7.50 0.25 0.00 193.75 SSE 7.50 124.25 187.75 73.25 12.25 0.25 405.25 s 6.50 62.75 143.25 82.00 46.00 18.00 358.50 SSW 11.75 45.00 85.00 43.75 6.00 1.00 192.50 SW 15.00 44.25 12.25 3.00 0.25 0.00 74.75 WSW 4.75 20.50 17.25 2.25 0.25 0.00 45.00 w 1.50 25.50 20.75 1.00 0.50 0.25 49.50 WNW 3.25 11.25 17.00 1.00 0.50 0.25 33.25 NW 4.50 28.25 34.25 4.00 0.50 0.75 72.25 NNW 10.00 61.25 55.75 14.25 2.50 0.25 144.00 Total 199.50 830.50 790.00 260.75 69.00 20.75 2170.50 Hours of Calm (<1.0 mph): 42.75 2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: F Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7.75 22.00 4.75 0.00 0.00 0.00 34.50 NNE 25.50 48.75 2.25 0.25 0.00 0.00 76.75 NE 30.50 20.25 1.00 0.00 0.00 0.00 51.75 ENE 15.25 44.00 1.75 0.25 0.00 0.00 61.25 E 24.75 45.00 4.00 0.00 0.00 0.00 73.75 ESE 20.50 72.25 1.75 0.00 0.00 0.00 94.50 SE 16.25 69.00 4.00 0.00 0.00 0.00 89.25 SSE 10.50 54.00 19.00 2.25 0.00 0.00 85.75 s 5.50 27.00 16.00 4.75 0.50 0.00 53.75 SSW 7.50 14.75 7.00 0.25 0.50 0.00 30.00 SW 7.00 16.00 2.50 0.50 0.00 0.00 26.00 WSW 5.75 9.50 1.50 0.50 0.00 0.00 17.25 w 1.50 5.50 1.00 0.25 0.25 0.00 8.50 WNW 2.00 1.25 0.75 0.50 0.00 0.00 4.50 NW 6.25 11.25 1.25 0.25 0.00 0.00 19.00 NNW 9.00 44.00 8.25 0.50 0.00 0.00 61.75 Total 195.50 504.50 76.75 10.25 1.25 0.00 788.25 Hours of Calm (<1.0 mph): 2.50 2017 Annual Radioactive Effluent Release Report

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: G Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 7.00 19.25 0.50 0.00 0.00 0.00 26.75 NNE 67.00 53.50 1.25 0.00 0.00 0.00 121.75 NE 25.50 22.00 0.25 0.50 0.00 0.00 48.25 ENE 12.50 27.50 2.00 0.50 0.00 0.00 42.50 E 23.25 27.50 0.25 0.00 0.00 0.00 51.00 ESE 19.50 55.75 1.00 0.00 0.00 0.00 76.25 SE 8.25 30.00 0.25 0.00 0.00 0.00 38.50 SSE 3.25 15.75 0.25 0.00 0.00 0.00 19.25 s 2.50 5.75 3.00 0.25 0.00 0.00 11.50 SSW 2.00 2.25 0.75 0.00 0.00 0.00 5.00 SW 3.25 4.75 0.25 0.00 0.00 0.00 8.25 WSW 4.25 2.25 0.25 0.00 0.00 0.00 6.75 w 2.00 1.50 0.00 0.00 0.00 0.00 3.50 WNW 2.00 0.75 0.00 0.00 0.00 0.00 2.75 NW 4.00 5.25 0.00 0.00 0.00 0.00 9.25 NNW 15.25 27.25 2.25 0.00 0.00 0.00 44.75 Total 201.50 301.00 12.25 1.25 0.00 0.00 516.00 Hours of Calm {<1.0 mph): 2.25 w

2017 Annual Radioactive Effluent Release Report ~

Hours At Each Wind Speed and Direction Period of Record: 01-JAN-2017 00:00:00 to 31-DEC-2017 23:45:00 Stability Class: ALL Elevation: 10 Meters Wind Direction Cardinals Wind Speed (mph) 1-3 4-7 8-12 13-18 19-24 > 24 Total N 23.75 112.00 149.00 103.75 21.50 0.75 410.75 NNE 137.00 310.00 246.25 66.50 3.00 0.00 762.75 NE 109.00 249.50 123.00 21.00 0.25 0.00 502.75 ENE 59.25 215.50 141.25 24.00 1.50 0.00 441.50 E 88.75 192.25 69.50 9.25 0.00 0.00 359.75 ESE 83.25 289.50 75.25 7.50 0.75 0.00 456.25 SE 50.50 317.50 171.75 28.00 0.25 0.00 568.00 SSE 37.25 343.50 452.25 227.00 54.25 2.00 1116.25 s 27.50 192.00 411.25 368.25 191.50 76.50 1267.00 SSW 32.75 130.25 250.25 187.75 58.75 79.75 739.50 SW 39.25 135.00 67.75 15.00 4.25 0.75 262.00 WSW 25.50 73.75 49.75 17.25 4.00 0.00 170.25 w 12.75 74.25 72.75 43.00 7.25 1.25 211.25 WNW 14.00 45.50 91.00 65.50 29.75 3.25 249.00 NW 21.00 93.75 207.00 117.50 37.25 7.00 483.50 NNW 38.25 180.50 220.00 146.75 55.75 10.50 651.75 Total 799.75 2954.75 2798.00 1448.00 470.00 181. 75 8652.25 Hours of Calm (<1.0 mph): 102.50 Maximum Hours of invalid Data: 718.50 w

u, 2017 Annual Radioactive Effluent Release Report

Appell'lldax c ONSITE GROUNDWATER PROTECTION PROGRAM MONITORING 2017 Annual Radioactive Effluent Release Report

Objective The objective of onsite groundwater protection program monitoring is to ensure timely detection of inadvertent radiological releases to ground water. At the Wolf Creek Generating Station, some background tritium influences from lake water reuse are normal and expected.

The onsite groundwater protection program monitoring sample results are being reported in the Radioactive Effluent Release Report per guidance received in association with the Nuclear Energy Institute (NEI) Groundwater Protection Industry Initiative. The following information is also being reported in association with the NEI Groundwater Protection Industry Initiative:

1. Describe any onsite licensed radioactive materials releases or spills that were voluntarily communicated to State/Local officials during the calendar year. - None

2. Describe any onsite groundwater sample results that exceeded the reporting thresholds that were voluntarily communicated to State/Local officials during the calendar year. - None There were no radioactive materials releases, spills, or reporting level exceedances reported to State/Local officials during 2017.

Onsite Groundwater Protection Program Monitoring Description In March of 2006, Wolf Creek Generating Station (WCGS) established an onsite groundwater protection monitoring program. During 2008, .thirteen monitoring wells were added to the onsite groundwater protection monitoring program. The onsite groundwater protection program monitoring is implemented via procedure Al 07-007, Onsite Groundwater Protection Program Monitoring. The onsite groundwater samples were collected by the WCGS Environmental Management group and were analyzed by Environmental, Inc., Midwest Laboratory. Onsite groundwater samples were collected quarterly when available and were analyzed by gamma isotopic analysis, radiochemical analysis for 1-131 and tritium analysis. The vendor lab (Environmental, Inc., Midwest Laboratory) participated in an interlaboratory comparison program. The following tables describe the sample locations, the lower limits of detection and the reporting levels for radioactivity detected.

2017 Annual Radioactive Effluent Release Report

Sample Location Sample Location Description AUX Dewatering Well located near the Auxiliary Building, on East Side EASTESW-W Essential Service Water Dewatering Well, East Group, West well, located southeast of the reactor MW-01A Monitoring Well, shallow depth, located northeast of the reactor ( control sample location)

MW-01B Monitoring Well, mid-range depth, located northeast of the reactor (control sample location)

MW-01C Monitoring Well, deep depth, located northeast of the reactor (control sample location)

MW-02A Monitoring Well, shallow depth, located northwest of the reactor MW-02B Monitoring Well, mid-range depth, located northwest of the reactor MW-03A Monitoring Well, shallow depth, located southwest of the reactor MW-03B Monitoring Well, mid-range depth, located southwest of the reactor MW-03C Monitoring Well, deep depth, located southwest of the reactor MW-05C Monitoring Well, deep depth, located south of the reactor MW-11A Monitoring Well, shallow depth, located southwest of the reactor MW-11B Monitoring Well, mid-range depth, located southwest of the reactor MW-12A Monitoring Well, shallow depth, located south of the reactor MW-12B Monitoring Well, mid-range depth, located south of the reactor WESTESW-W Essential Service Water Dewatering Well, West Group, West well, located south of the reactor Onsite Groundwater Lower Limits of Detection Analysis (pCi/L) Analysis (pCi/L)

H-3 2,000 Zr-Nb-95 15 Mn-54 15 - 1-131 1 Co-58 15 Cs-134 15 Fe-59 30 Cs-137 18 Co-60 15 Ba-La-140 15 Zn-65 30 Reporting Levels for Radioactivity Detected in Onsite Groundwater Analysis (pCi/L) Analysis (pCi/L)

H-3 20,000 Zr-Nb-95 400 Mn-54 1,000 1-131 2 Co-58 1,000 Cs-134 30 Fe-59 400 Cs-137 50 Co-60 300 Ba-La-140 200 Zn-65 300 w

2017 Annual Radioactive Effluent Release Report co

Discussion of Results Low levels of tritium were detected in an Essential Service Water dewatering well (WEST ESW-W) and in the dewatering well located near the Auxiliary Building (AUX), all within areas of backfill during plant construction. This has been attributed to the Plant's reuse of tritiated lake water and is consistent with gaseous tritium deposition during normal operation. Lake water is used for plant cooling, which includes essential service water, and in the Fire Protection System.

The sample with the highest level of tritium detected (1,316 +/- 130 pCi/L) was collected on 02-13-17 from the WEST ESW-W location. The measured tritium levels are significantly lower than the tritium levels routinely detected in surface water collected from Coffey County Lake (2017 range was 7,382 to 11,221 pCi/L).

The tritium activity was the only activity detected in the onsite groundwater samples. Lower limits of detection were met and sample analysis results were below the applicable reporting levels.

Subsurface Water Due to Industry Operating Experience, the Wolf Creek Generating Station started collecting and analyzing subsurface water during 2010. Subsurface water monitoring is a portion of the Groundwater Protection Program and is implemented via procedure Al 07-007, Onsite Groundwater Protection Program Monitoring. The definitions for subsurface water include:

1. Water that is encountered below grade while excavating, trenching, or drilling outside of the Radiologically Controlled Area and within the area displayed in Figure 1 (of Al 07-007). This excludes recent rainfall build-up in open excavation trenches.

2. Water that is encountered below grade or water that needs to be removed that is outside of a building, outside of the Radiologically Controlled Area and within the area displayed in Figure 1 (of Al 07-007). Examples include electrical vaults, piping vaults, valve pits, manholes, concrete pits, etc. Excludes removing water from powerblock sumps, sanitary sewers, spill containment berms or from within buildings.

The subsurface water samples were analyzed by the WCGS Chemistry Laboratory and the results were reviewed by Environmental Management. The subsurface water samples were analyzed for tritium. The following table identifies the sample dates, sample locations, and the analysis results.

w 2017 Annual Radioactive Effluent Release Report c.o

Date Location Description Tritium (pCi/L) 01/19/17 Anode A-3 (Northwest side of Turbine Building) <2,034 01/30/17 CW-1 (1 CW0006C) Manhole North of the Turbine Building 13,140 02/23/17 EMH138 Electrical Manhole West of Water Hammer Tower <2,262 03/01/17 EMH152 Electrical Manhole East of the Turbine Building 4,270 03/16/17 EMH 119 Electrical Manhole NW of Turbine Building <2,099 03/16/17 EMH120 Electrical Manhole NE of Turbine Building <2,202 03/16/17 EMH125 Electrical Manhole East of Turbine Building <2,307 03/16/17 EMH104 Electrical Manhole West of Shop Building <2,217 04/03/17 Dewatering Well #5 - West of Hot Machine Shop (1 DWV005) 1,660 04/03/17 EMH 152 Electrical Manhole East of the Turbine Building <1,706 04/10/17 EMH138 Electrical Manhole West of Water Hammer Tower 2,728 04/12/17 EMH 125 Electrical Manhole East of Turbine Building <1,728 04/12/17 EMH 152 Electrical Manhole East of the Turbine Building <2, 137 04/18/17 Dewatering Well #1 - East of the Turbine Building 1,875 04/20/17 EMH 125 Electrical Manhole East of the Turbine Building <1,971 04/20/17 EMH 152 Electrical Manhole East of the Turbine Building 2,964 04/24/17 EMH125 Electrical Manhole East of the Turbine Building 2,144 04/24/17 EMH 152 Electrical Manhole East of the Turbine Building 3,509 04/24/17 Dewatering Well #2 - East of the Turbine Building <1,974 04/24/17 Dewatering Well #3 - West of the Turbine Building <2,081 04/24/17 Dewatering Well #7 - Southwest of the Communication Corridor <2,473 05/02/17 EMH138 Electrical Manhole West of Water Hammer Tower 4,767 05/02/17 CW-1 (1 CW0006C) Manhole North of the Turbine Building 2,919 05/02/17 CW-3 ( 1CW0008C) Manhole near the Radwaste Building 2,286 05/04/17 EMH138 Electrical Manhole West of Water Hammer Tower 6,476 05/08/17 Anode A-3 (Northwest side of Turbine Building) <2,310 05/10/17 EMH138 Electrical Manhole West of Water Hammer Tower <1,720 06/12/17 XNB01 & XNB02 Transformer Discharge Vault, Sump 095 2,708 06/12/17 XMA01 D Transformer Discharge Vault, Sump 0725 <1,727 06/12/17 XMR01 Transformer Discharge Vault, Sump 096 <1,905 06/12/17 XPB03 & XPB04 Transformer Discharge Vault, Sump 094 <1,677 06/12/17 XMA01A, XMA01 B, XMA01 C & XMA02 Transformer Discharge 2,925 Vault, Sump 097 (Main) 07/26/17 Dewatering Well #1 - East of the Turbine Building 4,520 08/01/17 CW-2 (1CW0007C) Manhole East of Condensate Storage Tank 2,595 08/01/17 CW-3 (1 CW0008C) Manhole near the Radwaste Building <2, 115 08/02/17 Dewatering Well #3 - West of the Turbine Building <1,612 08/21/17 CW-1 (1 CW0006C) Manhole North of the Turbine Building <1,733 2017 Annual Radioactive Effluent Release Report

Date Location Description Tritium (pCi/L) 08/21/17 CW-3 (1 CW0008C) Manhole near the Radwaste Building <1,725 08/22/17 CW-1 (1CW0006C) Manhole North of the Turbine Building 1,984 08/23/17 EMH-B1-1 West of Main Security Building 3,559 09/20/17 EMH123 Electrical Manhole NW of Maintenance Shop 1,045 09/20/17 EMH102 Electrical Manhole NW of Maintenance Shop 1,680 09/20/17 EMH101 Electrical Manhole North of the Turbine Building 1,874 09/25/17 EMH105 Electrical Manhole West of Olive Ann Beech Building <1,898 09/25/17 EMH104 Electrical Manhole West of Maintenance Shop <1,845 09/25/17 EMH119 Electrical Manhole North of Turbine Building <2,038 09/25/17 EMH120 Electrical Manhole NE of Turbine Building <2,045 10/03/17 EMH104 Electrical Manhole West of Maintenance Shop <1,622 10/04/17 EMH118 Electrical Manhole East of Condensate Storage Tank 5,811 10/13/17 EMH104 Electrical Manhole West of Maintenance Shop <2,456 10/13/17 EMH118 Electrical Manhole East of Condensate Storage Tank 7,138 10/16/17 EMH104 Electrical Manhole West of Maintenance Shop <2,175 10/17/17 EMH104 Electrical Manhole West of Maintenance Shop 2,719 10/17/17 AUX Spill Remediation Well SE of Turbine Building 4,215 10/30/17 CW-1 (1 CW0006C) Manhole North of the Turbine Building <2,513 As expected, tritium activity was detected in some of the subsurface water samples. The highest detected tritium measured was 13,140 pCi/L in a sample collected 01-30-17 from manhole CW-1 (1CW0006C) located north of the Turbine Building. Gamma activity was not detected in the 01-30-17 subsurface water sample. Again, the detected tritium activity is likely due to the Plant's reuse of tritiated lake water. Lake water is used for plant cooling, which includes essential service water, and in the Fire Protection System. The measured tritium levels from subsurface water monitoring were lower than the onsite groundwater tritium reporting level of 20,000 pCi/L.

Conclusion Based upon the results of' the water samples that were analyzed in association with the Onsite Groundwater Protection Program, no inadvertent radiological releases to ground water were identified.

2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

DATE NUCLIDE ACTIVITY SIGN ERROR NOTE AUX 08-May-17 MN-54 < 2.8 AUX 08-May-17 C0-58 < 3.3 AUX 08-May-17 FE-59 < 6.1 AUX 08-May-17 C0-60 < 2.5 AUX 08-Mav-17 ** ZN-65 < 3.5 AUX 08-Mav-17 ZR-NB-95 < 2.6 AUX 08-Mav-17 1-131 < 0.440 AUX 08-Mav-17 CS-134 < 2.9 AUX 08-May-17 CS-137 < 3.4 AUX 08-May-17 BA-LA-140 < 2.3 AUX 08-May-17 H-3 489 +/- 95 EAST ESW-W 13-Feb-17 MN-54 < 2.8 EAST ESW-W 13-Feb-17 MN-54 < 2.6 Duplicate EAST ESW-W* 13-Feb-17 C0-58 < 1.9 Duplicate EASTESW-W 13-Feb-17 C0-58 < 2.4 EASTESW-W 13-Feb-17 FE-59 < 3.0 EAST ESW-W 13-Feb-17 FE-59 < 5.0 Duplicate EAST ESW-W 13-Feb-17 C0-60 < 2.6 Duplicate EAST ESW-W 13-Feb-17 C0-60 < 2.3 EAST ESW-W 13-Feb-17 ZN-65 < 4.6 EAST ESW-W 13-Feb-17 ZN-65 < 3.8 Duplicate EASTESW-W 13-Feb-17 ZR-NB-95 < 2.6 Duplicate EASTESW-W 13-Feb-17 ZR-NB-95 < 2.2 EASTESW-W 13-Feb-17 1-131 < 0.458 EASTESW-W 13-Feb-17 1-131 < 0.430 Duplicate EASTESW-W 13-Feb-17 CS-134 < 2.5 Duplicate EAST ESW-W 13-Feb-17 CS-134 < 3.3 EAST ESW-W 13-Feb-17 CS-137 < 2.0 EAST ESW-W 13-Feb-17 CS-137 < 2.7 Duplicate EASTESW-W 13-Feb-17 BA-LA-140 < 2.0 Duplicate EASTESW-W 13-Feb-17 BA-LA-140 < 4.2 EASTESW-W 13-Feb-17 H-3 < 187 EASTESW-W 13-Feb-17 H-3 < 187 Duplicate EASTESW-W 08-Mav-17 MN-54 < 2.6 EAST ESW-W 08-May-17 C0-58 < 2.6 EAST ESW-W 08-May-17 FE-59 < 2.1 EASTESW-W 08-May-17 C0-60 < 2.3 EAST ESW-W 08-May-17 ZN-65 < 2.1 EASTESW-W 08-May-17 ZR-NB-95 < 2.0 EASTESW-W 08-May-17 1-131 < 0.337 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE EAST ESW-W 08-Mav-17 CS-134 < 2.4 EASTESW-W 08-Mav-17 CS-137 < 2.9 EAST ESW-W 08-May-17 BA-LA-140 < 2.2 EAST ESW-W 08-Mav-17 H-3 < 151 EASTESW-W 24-Aua-17 MN-54 < 3.6 EASTESW-W 24-Aug-17 C0-58 < 3.3 EASTESW-W 24-Aug-17 FE-59 < 6.0 EAST ESW-W 24-Aug-17 C0-60 < 1.7 EAST ESW-W 24-Aug-17 ZN-65 < 4.8 EASTESW-W 24-Aug-17 ZR-NB-95 < 3.1 EASTESW-W 24-Aug-17 1-131 < 0.210 EASTESW-W 24-Aug-17 CS-134 < 3.2

• EAST ESW-W 24-Aug-17 CS-137 < 3.4 EAST ESW-W 24-Aua-17 BA-LA-140 < 2.2 EASTESW-W 24-Aug-17 H-3 < 149 EASTESW-W 06-Nov-17 MN-54 < 4.0 EAST ESW-W 06-Nov-17 C0-58 < 6.2 EAST ESW-W 06-Nov-17 FE-59 < 6.8 EAST ESW-W 06-Nov-17 C0-60 < 4.6 EASTESW-W 06-Nov-17 ZN-65 < 5.3 EAST ESW-W 06-Nov-17 ZR-NB-95 < 4.5 EASTESW-W 06-Nov-17 1-131 < 0.426 EAST ESW-W 06-Nov-17 CS-134 < 6.4 EAST ESW-W 06-Nov-17 CS-137 < 5.5 EAST ESW-W 06-Nov-17 BA-LA-140 < 5.3 EAST ESW-W 06-Nov-17 H-3 < 183 MW-01A 13-Feb-17 MN-54 < 1.9 MW-01A 13-Feb-17 C0-58 < 3.0 MW-01A 13-Feb-17 FE-59 < 4.5 MW-01A 13-Feb-17 C0-60 < 3.3 MW-01A 13-Feb-17 ZN-65 < 6.5 MW-01A 13-Feb-17 ZR-NB-95 < 3.4 MW-01A 13-Feb-17 1-131 < 0.235 MW-01A 13-Feb-17 CS-134 < 4.4 MW-01A 13-Feb-17 CS-137 < 2.7 MW-01A 13-Feb-17 BA-LA-140 < 3.3 MW-01A 13-Feb-17 H-3 < 187 MW-01A 08-May-17 MN-54 < 3.5 MW-01A 08-May-17 C0-58 < 2.5 MW-01A 08-Mav-17 FE-59 < 9.5 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-01A 08-May-17 C0-60 < 3.7 MW-01A 08-Mav-17 ZN-65 < 8.7 MW-01A 08-May-17 ZR-NB-95 < 4.0 MW-01A 08-May-17 1-131 < 0.330 MW-01A 08-May-17 CS-134 < 4.2 MW-01A 08-May-17 CS-137 < 4.2 MW-01A 08-May-17 BA-LA-140 < 3.8 MW-01A 08-May-17 H-3 < 147 MW-01A 24-Aug-17 MN-54 < 3.2 MW-01A 24-Auq-17 C0-58 < 2.9 MW-01A 24-Auq-17 FE-59 < 7.7 MW-01A 24-Aug-17 C0-60 < 2.5 MW-01A 24-Auq-17 ZN-65 < 6.0 MW-01A 24-Auq-17 ZR-NB-95 < 3.9 MW-01A 24-Aug-17 1-131 < 0.276 MW-01A 24-Auq-17 CS-134 < 4.0 MW-01A 24-Auq-17 CS-137 < 2.7 MW-01A 24-Aug-17 BA-LA-140 < 4.7 MW-01A 24-Auq-17 H-3 < 152 MW-01A 06-Nov-17 MN-54 < 2.9 MW-01A 06-Nov-17 C0-58 < 2.0 MW-01A 06-Nov-17 FE-59 < 6.1 MW-01A 06-Nov-17 C0-60 < 2.5 MW-01A 06-Nov-17 ZN-65 < 5.8 MW-01A 06-Nov-17 ZR-NB-95 < 3.4 MW-01A 06-Nov-17 1-131 < 0.283 MW-01A 06-Nov-17 CS-134 < 3.5 MW-01A 06-Nov-17 CS-137 < 3.9 MW-01A 06-Nov-17 BA-LA-140 < 4.1 MW-01A 06-Nov-17 H-3 < 183 MW-01B 13-Feb-17 MN-54 < 2.1 MW-01B 13-Feb-17 C0-58 < 2.4 MW-01B 13-Feb-17 FE-59 < 4.8 MW-01B 13-Feb-17 C0-60 < 1.7 MW-01B 13-Feb-17 ZN-65 < 5.5 MW-01B 13-Feb-17 ZR-NB-95 < 2.2 MW-01B 13-Feb-17 1-131 < 0.237 MW-01B 13-Feb-17 CS-134 < 3.1 MW-01B 13-Feb-17 CS-137 < 3.3 MW-01B 13-Feb-17 BA-LA-140 < 2.4 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-018 13-Feb-17 H-3 < 154 MW-018 08-May-17 MN-54 < 3.2 MW-018 08-May-17 C0-58 < 1.9 MW-018 08-May-17 FE-59 < 5.7 MW-018 08-May-17 C0-60 < 2.0 MW-018 08-May-17 ZN-65 < 3.5 MW-018 08-May-17 ZR-NB-95 < 2.1 MW-018 08-May-17 1-131 < 0.435 MW-018 08-May-17 CS-134 < 3.2 MW-018 08-May-17 CS-137 < 3.2 MW-018 08-May-17 BA-LA-140 < 1.4 MW-018 08-May-17 H:-3 < 147 MW-018 24-Aug-17 MN-54 < 2.5 MW-018 24-Aug-17 C0-58 < 2.8 MW-018 24-Aug-17 FE-59 < 2.9 MW-018 24-Aug-17 C0-60 < 1.9 MW-018 24-Aug-17 ZN-65 < 5.1 MW-018 24-Aug-17 ZR-NB-95 < 3.8 MW-018 24-Aug-17 1-131 < 0.498 MW-018 24-Aug-17 CS-134 < 3.5 MW-018 24-Aug-17 CS-137 < 2.9 MW-018 24-Aug-17 BA-LA-140 < . 2.3 MW-018 24-Aug-17 H-3 < 149 MW-018 06-Nov-17 MN-54 < 4.3 MW-018 06-Nov-17 C0-58 < 2.9 MW-018 06-Nov-17 FE-59 < 6.2 MW-018 06-Nov-17 C0-60 < 2.7 MW-018 06-Nov-17 ZN-65 < 9.6 MW-018 06-Nov-17 ZR-NB-95 < 6.2 MW-018 06-Nov-17 1-131 < 0.244 MW-018 06-Nov-17 CS-134 < 4.7 MW-018 06-Nov-17 CS-137 < 3.2 MW-018 06-Nov-17 BA-LA-140 < 5.3 MW-018 06-Nov-17 H-3 < 183 MW-01C 13-Feb-17 MN-54 < 3.1 MW-01C 13-Feb-17 C0-58 < 2.3 MW-01C 13-Feb-17 FE-59 < 6.7 MW-01C 13-Feb-17 C0-60 < 2.8 MW-01C 13-Feb-17 ZN-65 < 2.9 MW-01C 13-Feb-17 ZR-NB-95 < 3.1 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-01C 13-Feb-17 1-131 < 0.213 MW-01C 13-Feb-17 CS-134 < 3.7 MW-01C 13-Feb-17 CS-137 < 4.0 MW-01C 13-Feb-17 BA-LA-140 < 2.7 MW-01C 13-Feb-17 H-3 < 154 MW-01C 08-May-17 MN-54 < 2.2 MW-01C 08-May-17 C0-58 < 3.0 MW-01C 08-May-17 FE-59 < 5.6 MW-01C 08-May-17 C0-60 < 2.5 MW-01C 08-May-17 ZN-65 < 2.7 MW-01C 08-May-17 ZR-NB-95 < 2.3 MW-01C 08-May-17 1-131 < 0.262 MW-01C 08-May-17 CS-134 < 3.2 MW-01C 08-Mav-17 CS-137 < 2.2 MW-01C 08-May-17 BA-LA-140 < 2.7 MW-01C 08-Mav-17 H-3 < 147 MW-01C 24-Auq-17 MN-54 < 2.9 MW-01C 24-Aug-17 C0-58 < 3.9 MW-01C 24-Auq-17 FE-59 < 9.8 MW-01C 24-Auq-17 C0-60 < 2.6 MW-01C 24-Aug-17 ZN-65 < 6.2 MW-01C 24-Auq-17 ZR-NB-95 < 5.1 MW-01C 24-Auq-17 1-131 < 0.433 MW-01C 24-Aug-17 CS-134 < 4.2 MW-01C 24-Auq-17 CS-137 < 2.8 MW-01C 24-Auq-17 BA-LA-140 < 3.2 MW-01C 24-Aug-17 H-3 < 149 MW-01C 06-Nov-17 MN-54 < 2.4 MW-01C 06-Nov-17 MN-54 < 2.5 Duplicate MW-01C 06-Nov-17 C0-58 < 2.5 MW-01C 06-Nov-17 C0-58 < 3.0 Duplicate MW-01C 06-Nov-17 FE-59 < 5.4, Duplicate MW-01C 06-Nov-17 FE-59 < 5.3 MW-01C 06-Nov-17 C0-60 < 1.9 Duplicate MW-01C 06-Nov-17 C0-60 < 2.3 MW-01C 06-Nov-17 ZN-65 < 3.2 Duplicate MW-01C 06-Nov-17 ZN-65 < 2.9 MW-01C 06-Nov-17 . ZR-NB-95 < 3.5 MW-01C 06-Nov-17 ZR-NB-95 < 3.5 Duplicate MW-01C 06-Nov-17 1-131 < 0.462 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-01C 06-Nov-17 1-131 < 0.452 Duplicate MW-01C 06-Nov-17 CS-134 < 3.0 MW-01C 06-Nov-17 CS-134 < 3.6 Duplicate MW-01C 06-Nov-17 CS-137 < 3.1 MW-01C 06-Nov-17 CS-137 < 1.9 Duplicate MW-01C 06-Nov-17 BA-LA-140 < 3.1 MW-01C 06-Nov-17 BA-LA-140 < 3.0 Duplicate MW-01C 06-Nov-17 H-3 < 183 Duplicate MW-01C 06-Nov-17 H-3 < 183 MW-02A 13-Feb-17 MN-54 < 1.7 MW-02A 13-Feb-17 C0-58 < 1.3 MW-02A 13-Feb-17 FE-59 < 3.4 MW-02A 13-Feb-17 C0-60 < 2.5 MW-02A 13-Feb-17 ZN-65 < 3.4 MW-02A 13-Feb-17 ZR-NB-95 < 2.4 MW-02A 13-Feb-17 1-131 < 0.201 MW-02A 13-Feb-17 CS-134 < 3.0 MW-02A 13-Feb-17 CS-137 < 3.0 MW-02A 13-Feb-17 BA-LA-140 < 2.5 MW-02A 13-Feb-17 H-3 < 154 MW-02A 08-May-17 MN-54 < 2.5 MW-02A 08-May-17 C0-58 < 2.4 MW-02A 08-Mav-17 FE-59 < 5.2 MW-02A 08-May-17 C0-60 < 2.9 MW-02A 08-May-17 ZN-65 < 6.4 MW-02A 08-May-17 ZR-NB-95 < 2.9 MW-02A 08-May-17 1-131 < 0.387 MW-02A 08-May-17 CS-134 < 4.1 MW-02A 08-May-17 CS-137 < 2.7 MW-02A 08-May-17 BA-LA-140 < 4.1 MW-02A 08-May-17 H-3 < 147 MW-02A 24-Aug-17 MN-54 < 5.5 MW-02A 24-Aug-17 C0-58 < 5.4 MW-02A 24-Aug-17 FE:-59 < 7.2 MW-02A 24-Aug-17 C0-60 < 5.0 MW-02A 24-Aug-17 ZN-65 < 6.6 MW-02A 24-Aug-17 ZR-NB-95 < 5.0 MW-02A 24-Aug-17 1-131 < 0.482 MW-02A 24-Aug-17 CS-134 < 6.2 MW-02A 24-Aug-17 CS-137 < 4.1 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-02A 24-Aug-17 BA-LA-140 < 8.6 MW-02A 24-Aug-17 H-3 < 149 MW-02A 06-Nov-17 MN-54 < 2.0 MW-02A 06-Nov-17 C0-58 <. 2.9 MW-02A 06-Nov-17 FE-59 < 4.0 MW-02A 06-Nov-17 C0-60 < 1.6 MW-02A 06-Nov-17 ZN-65 < 2.6 MW-02A 06-Nov-17 ZR-NB-95 < 2.3 MW-02A 06-Nov~17 1-131 < 0.233 MW-02A 06-Nov-17 CS-134 < 3.3 MW-02A 06-Nov-17 CS-137 < 4.0 MW-02A 06-Nov-17 BA-LA-140 < 2.8 MW-02A 06-Nov-17 H-3 < 183 MW-028 13-Feb-17 MN-54 < 1.9 MW-028 13-Feb-17 C0-58 < 2.1 MW-028 13-Feb-17 FE-59 < 6.9 MW-028 13-Feb-17 C0-60 < 1.9 MW-028 13-Feb-17 ZN-65 < 4.9 MW-028 13-Feb-17 ZR-NB-95 < 1.8 MW-028 13-Feb-17 1-131 < 0.433 MW-028 13-Feb-17 CS-134 < 2.6 MW-028 13-Feb-17 CS-137 < 2.1 MW-028 13-Feb-17 BA-LA-140 < 3.0 MW-028 13-Feb-17 H-3 < 154 MW-028 08-May-17 MN-54 < 3.4 MW-028 08-May-17 C0-58 < 2.5 MW-028 08-May-17 FE-59 < 2.6 MW-028 08-Mav-17 C0-60 < 2.1 MW-028 08-May-17 ZN-65 < 2.0 MW-028 08-May-17 ZR-NB-95 < 3.5 MW-028 08-Mav-17 1-131 < 0.252 MW-028 08-Mav-17 CS-134 < 3.3 MW-028 08-May-17 CS-137 < 2.5 MW-028 08-May-17 BA-LA-140 < 4.1 MW-028 08-May-17 H-3 < 147 MW-028 24-Aug-17 MN-54 < 1.9 MW-028 24-Aug-17 C0-58 < 2.8 MW-028 24-Aug-17 FE-59 < 5.8 MW-028 24-Aug-17 C0-60 < 1.5 MW-028 24-AuQ-17 ZN-65 < . 4.5 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-028 24-Aug-17 ZR-NB-95 < 2.9 MW-028 24-Aug-17 1-131 < 0.418 MW-028 24-Aug-17 CS-134 < 3.0 MW-028 24-Aug:..17 CS-137 < 2.0 MW-028 24-Aug-17 BA-LA-140 < 2.5 MW-028 24-Aug-17 H-3 < 149 MW-028 06-Nov-17 MN-54 < 2._1 MW-028 06-Nov-17 C0-58 < 2.9 MW-028 06-Nov-17 FE-59 < 6.0 MW-028 06-Nov-17 C0-60 < 2.1 MW-028 06-Nov-17 ZN-65 < 4.0 MW-028 06-Nov-17 ZR-NB-95 < 3.9 MW-028 06-Nov-17 1-131 < 0.454 MW-028 06-Nov-17 CS-134 < 3.5 MW-028 06-Nov-17 CS-137 < 3.1 MW-028 06-Nov-17 BA-LA-140 < 2.8 MW-028 06-Nov-17 H-3 < 183 MW-03A 13-Feb-17 MN-54 < 2.3 MW-03A 13-Feb-17 C0-58 < 2.1 MW-03A 13-Feb-17 - FE-59 < 4.1 MW-03A 13-Feb-17 C0-60 < 2.5 MW-03A 13-Feb-17 . ZN-65 < 3.4 MW-03A 13-Feb-17 ZR-NB-95 < 2.2 MW-03A 13-Feb-17 1-131 < 0.478 MW-03A 13-Feb-17 CS-134 < 3.1 MW-03A 13-Feb-17 CS-137 < 2.4 MW-03A 13-Feb-17 BA-LA-140 < 2.3 MW-03A 13-Feb-17 H-3 < 154 MW-03A 08-May-17 MN-54 < 6.0 MW-03A 08-May-17 C0-58 < 6.6 MW-03A 08-May-17 FE-59 < 5.2 MW-03A 08-May-17 C0-60 < 5.3 MW-03A 08-May-17 ZN-65 < 11.0 MW-03A .08-May-17 ZR-NB-95 < 6.0 MW-03A 08-May-17 1-131 < 0.302 MW-03A 08-May-17 CS-134 < 6.7 MW-03A 08-Mav-17 CS-137 < 4.3 MW-03A 08-May-17 BA-LA-140 < 4.9 MW-03A 08-May-17 H-3 < 147 MW-03A 24-Aug-17* MN-54 < 2.8 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-03A 24-Aug-17 C0-58 < 3.0 MW-03A 24-Aug-17 FE-59 < 7.3 MW-03A 24-Aug-17 C0-60 < 1.6 MW-03A 24-Aug-17 ZN-65 < 4.4 MW-03A 24-AuQ-17 ZR-NB-95 < 3.1 MW-03A 24-Aug-17 1-131 < 0.341 MW-03A 24-AuQ-17 CS-134 < 2.7 MW-03A 24-AuQ-17 CS-137 < 4.1 MW-03A 24-Aug-17 BA-LA-140 < 1.3 MW-03A 24-Aug-17 H-3 < 149 MW-03A 06-Nov-17 MN-54 < 2.8 MW-03A 06-Nov-17 C0-58 < 2.9 MW-03A 06-Nov-17 FE-59 < 6.3 MW-03A 06-Nov-17 C0-60 < 3.0 MW-03A 06-Nov-17 ZN-65 < 4.8 MW-03A 06-Nov-17 ZR-NB-95 < 3.7 MW-03A 06-Nov-17 1-131 < 0.408 MW-03A 06-Nov-17 CS-134 < 3.4 MW-03A 06-Nov-17 CS-137 < 2.8 MW-03A 06-Nov-17 BA-LA-140 < 3.3 MW-03A 06-Nov-.17 H-3 < 183 MW-03B 13-Feb-17 MN-54 < 1.9 MW-03B 13-Feb-17 C0-58 < 1.5 MW-03B 13-Feb-17 FE-59 < 4.1 MW-03B 13-Feb-17 C0-60 < 1.9 MW-03B 13-Feb-17 ZN-65 < 3.3 MW-03B 13-Feb-17 ZR-NB-95 < 2.7 MW-038 13-Feb-17 1-131 < 0.471 MW-03B 13-Feb-17 CS-134 < 2.8 MW-03B 13-Feb-17 CS-137 < 3.1 MW-03B 13-Feb-17 BA-LA-140 < 2.0 MW-038 13-Feb-17 H-3 < 154 MW-03B 08-May-17 MN-54 < 2.0 MW-03B 08-May-17 C0-58 < 3.2 MW-03B 08-May-17 FE-59 < 6.8 MW-03B 08-May-17 C0-60 < 2.2 MW-03B 08-May-17 ZN-65 < 4.7 MW-03B 08-May-17 ZR-NB-95 < 2.2 MW-03B 08-May-17 1-131 < 0.306 MW-03B 08-May-17 CS-134 < 3.3 (J1 2017 Annual Radioactive Effluent Release Report 0

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-038 08-May-17 CS-137 < 3.5 MW-038 08-May-17 BA-LA-140 < 1.8 MW-038 08-May-17 H-3 < 147 MW-038 24-Aug-17 MN-54 < 3.0 MW-038 24-AuQ-17 C0-58 < 1.7 MW-038 24-Aug-17 FE-59 < 5.4 MW-038 24-AuQ-17 C0-60 < 2.2 MW-038 24-AuQ-17 ZN-65 < 3.6 MW-038 24-Aug-17 ZR-NB-95 < 3.7 MW-038 24-AuQ-17 1-131 < 0.275 MW-038 24-AuQ-17 CS-134 < 3.8 MW-038 24-Aug-17 CS-137 < 3.6 MW-038 24-Aug-17 BA-LA-140 < 2.9 MW-038 24-Aug-17 H-3 < 149 MW-038 06-Nov-17 MN-54 < 2.1 MW-038 06-Nov-17 C0-58 < 2.5 MW-038 06-Nov-17 FE-59 < 4.6 MW-038 06-Nov-17 C0-60 < 3.2 MW-038 06-Nov-17 ZN-65 < 5.8 MW-038 06-Nov-17 ZR-NB-95 < 2.2 MW-038 06-Nov-17 1-131 < 0.420 MW-038 06-Nov-17 CS-134 < 3.0 MW-038 06-Nov-17 CS-137 < 2.4 MW-038 06-Nov-17 BA-LA-140 < 2.4 MW-038 06-Nov-17 H-3 < 183 MW-03C 13-Feb-17 MN-54 < 2.5 MW-03C 13-Feb-17 C0-58 < 2.0 MW-03C 13-Feb-17 FE-59 < 3.8 MW-03C 13-Feb-17 C0-60 < 2.9 MW-03C 13-Feb-17 ZN-65 < 4.1 MW-03C 13-Feb-17 ZR-NB-95 < 1.8 MW-03C 13-Feb-17 1-131 < 0.347 MW-03C 13-Feb-17 CS-134 < 3.0 MW-03C 13-Feb-17 CS-137 < 3.1 MW-03C 13-Feb-17 BA-LA-140 < 2.7 MW-03C 13-Feb-17 H-3 < 154 MW-03C 08-May-17 MN-54 < 2.3 MW-03C 08-May-17 C0-58 < 1.7 MW-03C 08-May-17 FE-59 < 2.5 MW-03C 08-May-17 C0-60 < 2.2 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-03C 08-May-17 ZN-65 < 2.9 MW-03C 08-May-17 ZR-NB-95 < 2.3 MW-03C 08-May-17 1-131 < 0.362 MW-03C 08-May-17 CS-134 < 3.5 MW-03C 08-May-17 CS-137 < 3.0 MW-03C 08-May-17 BA-LA-140 < 3.2 MW-03C 08-Mav-17 H-3 < 147 MW-03C 24-Aug-17 MN-54 < 3.8 MW-03C 24-Aug-17 C0-58 < 2.3 MW-03C 24-Aug-17 FE-59 < 5.1 MW-03C 24-Aug-17 C0-60 < 2.4 MW-03C 24-Aug-17 ZN-65 < 7.8 MW-03C 24-Aug-17 ZR-NB-95 < 3.6 MW-03C 24-Aug-17 1-131 < 0.321 MW-03C 24-Aug-17 CS-134 < 4.3 MW-03C 24-Aug-17 CS-137 < 3.3 MW-03C 24-Aug-17 BA-LA-140 < 4.4 MW-03C 24-Aug-17 H-3 < 149 MW-03C 06-Nov-17 MN-54 < 1.5 MW-03C 06-Nov-17. C0-58 < 1.7 MW-03C 06-Nov-17 FE-59 < 4.4 MW-03C 06-Nov-17 C0-60 < 1.3 MW-03C 06-Nov-17 ZN-65 < 3.6 MW-03C 06-Nov-17 ZR-NB-95 < 2.9 MW-03C 06-Nov-17 1-131 < 0.307 MW-03C 06-Nov-17 CS-134 < 3.2 MW-03C 06-Nov-17 CS-137 < 1.8 MW-03C 06-Nov-17 BA-LA-140 < 2.6 MW-03C 06-Nov-17 H-3 < 183 MW-05C 13-Feb-17 MN-54 < 2.0 MW-05C 13-Feb-17 C0-58 < 3.0 MW-05C 13-Feb-17 FE-59 < 5.3 MW-05C 13-Feb-17 C0-60 < 2.1 MW-05C 13-Feb-17 ZN-65 < 5.0 MW-05C 13-Feb-17 ZR-NB-95 < 2.5 MW-05C 13-Feb-17 1-131 < 0.358 MW-05C 13-Feb-17 CS-134 < 3.6 MW-05C 13-Feb-17 CS-137 < 2.0 MW-05C 13-Feb-17 BA-LA-140 < 2.5 MW-05C 13-Feb-17 H-3 < 154 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-05C 08-May-17 MN-54 < 2.9 MW-05C 08-May-17 C0-58 < 2.1 MW-05C 08-May-17 FE-59 < 5.3 MW-05C 08-May-17 C0-60 < 1.7 MW-05C 08-Mav-17 ZN-65 < 4.0 MW-05C 08-May-17 ZR-NB-95 < 3.1 MW-05C 08-Mav-17 1-131 < 0.450 MW-05C 08-Mav-17 CS-134 < 3.0 MW-05C 08-May-17 CS-137 < 2.5 MW-05C 08-May-17 BA-LA-140 < 1.4 MW-05C 08-Mav-17 H-3 < 147 MW-05C 24-Aug-17 MN-54 < 3.2 MW-05C 24-Aug-17 C0-58 < 2.5 MW-05C 24-Aug-17 FE-59 < 5.0 MW-05C 24-Aug-17 C0-60 < 2.5 MW-05C 24-Aug-17 ZN-65 < 4.2 MW-05C 24-Aug-17 ZR-NB-95 < 3.7 MW-05C 24-Aug-17 1-131 < 0.237 MW-05C 24-Aug-17 CS-134 < 3.4 MW-05C 24-Aug-17 CS-137 < 2.6 MW-05C 24-Aug-17 BA-LA-140 < 2.6 MW-05C 24-Auq-17 H-3 < 149 MW-05C 06-Nov-17 MN-54 < 3.0 MW-05C 06-Nov-17 C0-58 < 3.7 MW-05C 06-Nov-17 FE-59 < 7.1 MW-05C 06-Nov-17 C0-60 < 3.8 MW-05C 06-Nov-17 ZN-65 < 3.7 MW-05C 06-Nov-17 ZR-NB-95 < 5.1 MW-05C 06-Nov-17 1-131 < 0.291 MW-05C 06-Nov-17 CS-134 < 4.7 MW-05C 06-Nov-17 CS-137 < 4.9 MW-05C 06-Nov-17 BA-LA-140 < 1.7 MW-05C 06-Nov-17 H-3 < 183 MW-11A 13-Feb-17 MN-54 < 3.0 MW-11A 13-Feb-17 C0-58 < 3.3 MW-11A 13-Feb-17 FE-59 < 5.9 MW-11A 13-Feb-17 C0-60 < 2.9 MW-11A 13-Feb-17 ZN-65 < 3.1 MW-11A 13-Feb-17 ZR-NB-95 < 2.2 MW-11A 13-Feb-17 1-131 < 0.283 CJ'I 2017 Annual Radioactive Effluent Release Report w

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-11A 13-Feb-17 CS-134 < 3.4 MW-11A 13-Feb-17 CS-137 < 3.3 MW-11A 13-Feb-17 BA-LA-140 < 4.1 MW-11A 13-Feb-17 H-3 < 154 MW-11A 08-May-17 MN-54 < 2.1 MW-11A 08-May-17 C0-58 < 2.7 MW-11A 08-May-17 FE-59 < 3.1 MW-11A 08-May-17 C0-60 < 2.9 MW-11A 08-May-17 ZN-65 < 7.2 MW-11A 08-May-17 ZR-NB-95 < 3.3 MW-11A 08-May-17 1-131 < 0.298 MW-11A 08-May-17 CS-134 < 3.5 MW-11A 08-May-17 CS-137 < 3.3 MW-11A 08-May-17 BA-LA-140 < 3.0 MW-11A 08-May-17 H-3 < 151 MW-11A 24-Aug-17 MN-54 < 3.6 MW-11A 24-Aug-17 C0-58 < 1.5 MW-11A 24-Aug-17 FE-59 < 4.3 MW-11A 24-Aug-17 C0-60 < 2.7 MW-11A 24-Aug-17 ZN-65 < 3.7 MW-11A 24-Aug-17 ZR-NB-95 < 3.1 MW-11A 24-Aug-17 1-131 < 0.247 MW-11A 24-Aug-17 CS-134 < 2.9 MW-11A 24-Aug-17 CS-137 < 2.0 MW-11A 24-Aug-17 BA-LA-140 < 2.3 MW-11A 24-Aug-17 H-3 < 149 MW-11A 06-Nov-17 MN-54 < 1.6 MW-11A 06-Nov-17 C0-58 < 2.3 MW-11A 06-Nov-17 FE-59 < 2.6 MW-11A 06-Nov-17 C0-60 < 1.3 MW-11A 06-Nov-17 ZN-65 < 4.0 MW-11A 06-Nov-17 ZR-NB-95 < 3.0 MW-11A 06-Nov-17 1-131 < 0.286 MW-11A 06-Nov-17 CS-134 < 2.8 MW-11A 06-Nov-17 CS-137 < 3.1 MW-11A 06-Nov-17 BA-LA-140 < 2.9 MW-11A 06-Nov-17 H-3 < 183 MW-11B 13-Feb-17 MN-54 < 5.6 MW-11B 13-Feb-17 C0-58 < 2.4 MW-11B 13-Feb-17 FE-59 < 6.9 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-11B 13-Feb-17 C0-60 < 5.0 MW-11B 13-Feb-17 ZN-65 < 2.9 MW-11B 13-Feb-17 ZR-NB-95 < 3.9 MW-11B 13-Feb-17 1-131 < 0.443 MW-11B 13-Feb-17 CS-134 < 5.4 MW-11B 13-Feb-17 CS-137 < 5.2 MW-11B 13-Feb-17 BA-LA-140 < 5.7 MW-11B 13-Feb-17 H-3 < 154 MW-11B 08-May-17 MN-54 < 3.8 MW-11B 08-May-17 C0-58 < 2.3 MW-11B 08-May-17 FE-59 < 6.7 MW-11B 08-May-17 C0-60 < 2.7 MW-11B 08-May-17 ZN-65 < 7.1 MW-11B 08-May-17 ZR-NB-95 < 3.5 MW-11B 08-May-17 1-131 < 0.369 MW-11B 08-May-17 CS-134 < 4.0 MW-11B 08-May-17 CS-137 < 3.3 MW-11B 08-May-17 BA-LA-140 < 3.1 MW-11B 08-May-17 H-3 < 151 MW-11B 24-Aug-17 MN-54 < 2.2 MW-11B 24-Aug-17 MN-54 < 3.6 Duplicate MW-11B 24-Aug-17 C0-58 < 4.5 Duplicate MW-11B 24-Aug-17 C0-58 < 3.0 MW-11B 24-Aug-17 FE-59 < 7.0 Duplicate MW-11B 24-Auq-17 FE-59 < 5.1 MW-11B 24-Aug-17 C0-60 < 1.8 MW-11B 24-Aug-17 C0-60 < 3.5 Duplicate MW-11B 24-Aug-17 ZN-65 < 2.3 MW-11B 24-Aug-17 ZN-65 < 7.3 Duplicate MW-11B 24-Aug-17 ZR-NB-95 < 4.0 Duplicate MW-11B 24-Aug-17 ZR-NB-95 < 3.0 MW-11B 24-Auq-17 1-131 < 0.312 Duplicate MW-11B 24-Aug-17 1-131 < 0.245 MW-11B 24-Aug-17 CS-134 < 4.3 Duplicate MW-11B 24-Auq-17 CS-134 < 3.3 MW-11B 24-Aug-17 CS-137 < 5.1 Duplicate MW-11B I 24-Aug-17 CS-137 < 4.0 I

MW-11B 24-Aug-17 BA-LA-140 < 1.7 MW-11B I 24-Aug-17 BA-LA-140 < 2.0 Duplicate MW-11B iI 24-Auq-17 H-3 < 149 Duplicate UI 2017 Annual Radioactive Effluent Release Report UI

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-11B 24-Aug-17 H-3 < 149 MW-11B 06-Nov-17 MN-54 < 2.0 MW-11B 06-Nov-17 C0-58 < 2.0 MW-11B 06-Nov-17 FE-59 < 3.6 MW-11B 06-Nov-17 C0-60 < 2.4 MW-11B 06-Nov-17 ZN-65 < 3.5 MW-11B 06-Nov-17 ZR-NB-95 < 2.0 MW-11B 06-Nov-17 1-131 < 0.271 MW-11B 06-Nov-17 CS-134 < 2.4 MW-11B 06-Nov-17 CS-137 < 3.3 MW-11B 06-Nov-17 BA-LA-140 < 2.6

\

MW-11B 06-Nov-17 H-3 < 183 MW-12A 13-Feb-17 MN-54 < 3.5 MW-12A 13-Feb-17 C0-58 < 3.5 MW-12A 13-Feb-17 FE-59 < 7.1 MW-12A 13-Feb-17 C0-60 < 1.8 MW-12A 13-Feb-17 ZN-65 < 4.3 MW-12A 13-Feb-17 ZR-NB-95 < 5.2 MW-12A 13-Feb-17 1-131 < 0.339 MW-12A 13-Feb-17 CS-134 < 3.8 MW-12A 13-Feb-17 CS-137 < 2.4 MW-12A 13-Feb-17 BA-LA-140 < 5.3 MW-12A 13-Feb-17 H-3 - < 154 MW-12A 08-May-17 MN-54 < 3.1 MW-12A 08-May-17 C0-58 < 2.2 MW-12A 08-May-17 FE-59 < 2.8 MW-12A 08-May-17 C0-60 < 1.8 MW-12A 08-Mav-17 ZN-65 < 2.5 MW-12A 08-Mav-17 ZR-NB-95 < 2.9 MW-12A 08-May-17 1-131 < 0.482 MW-12A 08-May-17 CS-134 < 3.4 MW-12A 08-May-17 CS-137 < 2.9 MW-12A 08-May-17 BA-LA-140 < 2.0 MW-12A 08-May-17 H-3 < 151 MW-12A 24-AuQ-17 MN-54 < 3.2 MW-12A 24-Aug-17 C0-58 < 2.6 MW-12A 24-AuQ-17 FE-59 < 4.5 MW-12A 24-AuQ-17 C0-60 < 1.1 MW-12A 24-Aug-17 ZN-65 < 5.4 MW-12A 24-AuQ-17 ZR-NB-95 < 3.2 01 2017 Annual Radioactive Effluent Release Report 0)

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-12A 24-Aug-17 _ 1-131 < 0.218 MW-12A 24-Aug-17 CS-134 < 3.3 MW-12A 24-Aug-17 CS-137 < 4.2 MW-12A 24-Aug-17 BA-LA-140 < 2.4 MW-12A 24-Aug-17 H-3 < 149 MW-12A 06-Nov-17 MN-54 < 2.6 MW-12A 06-Nov-17 C0-58 < 2.7 MW-12A 06-Nov-17 FE-59 < 2.7 MW-12A 06-Nov-17 C0-60 < 1.7 MW-12A 06-Nov-17 ZN-65 < 4.4 MW-12A 06-Nov-17 ZR-NB-95 < 2.7 MW-12A 06-Nov-17 1-131 < 0.257 MW-12A 06-Nov-17 CS-134 < 3.6 MW-12A 06-Nov-17 CS-137 < 2.3 MW-12A 06-Nov-17 BA-LA-140 < 3.0 MW-12A 06-Nov-17 H-3 < 183 MW-12B 13-Feb-17 MN-54 < 3.6 MW-12B 13-Feb-17 C0-58 < 2.4 MW-12B 13-Feb-17 FE-59 < 4.2 MW-12B 13-Feb-17 C0-60 < 2.0 MW-12B 13-Feb-17 ZN-65 < 2.4 MW-12B 13-Feb-17 ZR-NB-95 < 4.1 MW-12B 13-Feb-17 1-131 < 0.386 MW-12B 13-Feb-17 CS-134 < 3.9 MW-12B 13-Feb-17 CS-137 < 2.5 MW-12B 13-Feb-17 BA-LA-140 < 2.5 MW-12B 13-Feb-17 H-3 < 154 MW-12B 08-May-17 MN-54 < 2.2 MW-12B 08-May-17 C0-58 < 1.5 MW-12B 08-Mav-17 FE-59 < 5.5 MW-12B 08-May-17 C0-60 < 1.6 MW-12B 08-May-17 ZN-65 < 2.7 MW-12B 08-May-17 ZR-NB-95 < 1.4 MW-128 08-Mav-17 1-131 < 0.320 MW-128 08-May-17 CS-134 < 2.4 MW-128 08-May-17 CS-~37 < 2.3 MW-12B 08-May-17 BA-LA-140 < 1.5 MW-12B 08-May-17 H-3 < 151 MW-12B 24-Aug-17 MN-54 < 5.0 MW-12B 24-Aug-17 C0-58 < 3.2 2017 Annual Radioactive Effluent Release Report

Onsite Groundwater Results Concentration (pCi/L)

LOCATION DATE NUCLIDE ACTIVITY SIGN ERROR NOTE MW-12B 24-Aug-17 FE-59 < 5.9 MW-12B 24-Aug-17 C0-60 < 3.1 MW-12B 24-Aug-17 ZN-65 < 7.6 MW-12B 24-Aug-17 ZR-NB-95 < 4.1 MW-12B 24-AuQ-17 1-131 < 0.217 MW-12B 24-Aug-17 CS-134 < 4.4 MW-12B 24-AuQ-17 CS-137 < 5.6 MW-12B 24-AuQ-17 BA-LA-140 < 2.0 MW-12B 24-Aug-17 H:..3 < 149 MW-12B 06-Nov-17 MN-54 < 2.6 MW-12B 06-Nov-17 C0-58 < 2.5 MW-12B 06-Nov-17 FE-59 < 3.3 MW-12B 06-Nov-17 C0-60 < 1.7 MW-12B 06-Nov-17 ZN-65 < 3.7 MW-12B 06-Nov-17 ZR-NB-95 < 2.3 MW-12B 06-Nov-17 1-131 < 0.370 MW-12B 06-Nov-17 CS-134 < 3.2 MW-12B 06-Nov-17 CS-137 < 2.7 MW-12B 06-Nov-17 BA-LA-140 < 4.5 MW-12B 06-Nov-17 H-3 < 183 WESTESW-W 13-Feb-17 MN-54 < 7.1 WESTESW-W 13-Feb-17 C0-58 < 4.9 WEST ESW-W 13-Feb-17 FE-59 < 11.7 WEST ESW-W 13-Feb-17 C0-60 < 4.7 WEST ESW-W 13-Feb-17 ZN-65 < 7.7 WESTESW-W 13-Feb-17 ZR-NB-95 < 5.2 WESTESW-W 13-Feb-17 1-131 < 0.259 WESTESW-W 13-Feb-17 CS-134 < 8.0 WESTESW-W 13-Feb-17 CS-137 < 6.3 WESTESW-W 13-Feb-17 BA-LA-140 < 6.0 WESTESW-W 13-Feb-17 H-3 1,316 +/- 130 c.n 2017 Annual Radioactive Effluent Release Report co

ENCLOSURES TO WCGS ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT Enclosure I contains the Offsite Dose Calculation Manual, AP 078-003, Revision 8 Enclosure II contains the Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program), AP 078-004, Revision 21 Enclosure Ill contains the Solid Radwaste Process Control Program, AP 31A-100, Revision 8 u,

2017 Annual Radioactive Effluent Release Report U)