ML18109A606

(Waterford 3) - Annual Radiological Environmental Operating Report for 2017

ML18109A606
Person / Time
Site:	Waterford
Issue date:	04/19/2018
From:	Jarrell J Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
W3FI -2018-0022
Download: ML18109A606 (69)

Text

Entergy Operations, Inc.

17265 River Road Killona, LA 70057-3093 Entergy Tel 504 739 6685 Fax 504 739 6698 jjarrel@entergy.com John P. Jarrell III Manager Regulatory Assurance

Waterford 3 W3FI -2018-0022 April 19, 2018 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001

Subject:

Annual Radiological Environmental Operating Report -2017 Waterford Steam Electric Station, Unit 3 (Waterford 3)

Docket No. 50-382 License No. NPF-38

Dear Sir or Madam:

Attached is the Annual Radiological Environmental Operating Report for the period of January 1 through December 31, 2017. This report is submitted pursuant to the requirements of Waterford 3 Technical Specification Section 6.9.1.7.

This report contains no new commitments. Please contact John P. Jarrell, Regulatory Assurance Manager, at (504) 739-6685 if you have questions regarding this information.

Attachment:

Annual Radiological Environmental Operating Report 2017

W3F1-2018-0022 Page 2 cc: Mr. Kriss Kennedy Regional Administrator U. S. Nuclear Regulatory Commission Region IV RidsRgn4MailCenter@nrc.gov NRC Senior Resident Inspector Waterford Steam Electric Station Unit 3 Frances.Ramirez@nrc.gov Chris.Speer@nrc.gov NRC/NRR Project Manager for Waterford 3 April.Pulvirenti@nrc.gov Allyson Howie Entergy Legal, General Sr Councel AHowie@entergy.com

Attachment to W3F1-2018-0022 Annual Radiological Environmental Operating Report - 2017 (65 pages)

Annual Radiological Environmental Operating Report January 1, 2017 - December 31, 2017 Waterford 3 Steam Electric Station Entergy Operations, Inc.

Docket Number 50-382 License Number NPF-38

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Originator:

Ann V. Dubois, Chemistry Technician Date Reviewed By: qIgIig Clay M. Benton, Chemistry Supervisor Date Approved By:

Manager 7

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE OF CONTENTS

SUMMARY

1

1.0 INTRODUCTION

5 1.1 Radiological Environmental Monitoring Program 5 1.2 Pathways Monitored 5 1.3 Land Use Census 5 2.0 INTERPRETATION AND TRENDS OF RESULTS 20 2.1 Air Particulate and Radioiodine Sample Results 20 2.2 Thermoluminescent Dosimetry Sample Results 20 2.3 Water Sample Results 21 2.4 Sediment Sample Results 21 2.5 Milk Sample Results 22 2.6 Fish Sample Results 22 2.7 Broad Leaf Vegetation Sample Results 22 2.8 Land Use Census Results 22 2.9 Interlaboratory Comparison Results 22 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

25 3.1 2017 Program Results Summary 25

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station LIST OF TABLES TABLE 1.1 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM 6 TABLE 2.1 BIENNIAL LAND USE CENSUS RESULTS 23 TABLE 3.1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

26

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station LIST OF FIGURES FIGURE 1-1 REMP SAMPLES WITHIN 2 MILES OF WATERFORD 3 17 FIGURE 1-2 REMP SAMPLES WITHIN 10 MILES OF WATERFORD 3 18 FIGURE 1-3 REMP SAMPLES WITHIN 50 MILES OF WATERFORD 3 19 FIGURE 2-1 TLD RADIATION DOSE COMPARISON (BY YEAR) 24

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station LIST OF ATTACHMENTS ATTACHMENT 1 2017 RADIOLOGICAL MONITORING REPORT

SUMMARY

OF MONITORING RESULTS 30 ATTACHMENT 2 STATISTICAL COMPARISONS 53

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Summary The Annual Radiological Environmental Operating Report presents data obtained through analyses of environmental samples collected for Waterford 3s (W3) Radiological Environmental Monitoring Program (REMP) for the period January 1 through December 31, 2017. This report fulfills the requirements of W3 Technical Specification 6.9.1.7.

During 2017, gross beta radioactivity was detected in air and drinking/surface water locations. Results obtained at the indicator locations were similar to those obtained at the control location. Therefore, levels continue to remain at background.

Radiological Environmental Monitoring Program W3 established the REMP prior to the station becoming operational (1985) to provide data on background radiation and radioactivity normally present in the area. W3 has continued to monitor the environment by sampling air, water, sediment, milk, fish and broad leaf vegetation, as well as measuring radiation directly.

The REMP includes sampling indicator and control locations within a 31-mile radius of the plant. The REMP utilizes indicator locations near the site to show any increases or buildup of radioactivity that might occur due to station operation, and control locations farther away from the site to indicate the presence of only naturally occurring radioactivity. W3 compares indicator results with control, preoperational, and previous years operational results to assess any impact W3 might have on the surrounding environment.

In 2017, W3 collected environmental samples for radiological analysis. Based on the comparison results of indicator locations with control locations and previous studies, it was concluded that overall W3 operations had no significant impact on plant environs. The review of 2017 data, in many cases, showed undetectable radiation levels in the environment and near background levels in significant pathways associated with W3.

Harmful Effects or Irreversible Damage The REMP did not detect any harmful effects or evidence of irreversible damage in 2017. Therefore, no analysis or planned course of action to alleviate problems was necessary.

1

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Reporting Levels W3's review indicates that no samples equaled or exceeded reporting levels for radioactivity concentration in environmental samples, as outlined in Technical Requirements Manual (TRM)

Table 3.12-2 when averaged over any calendar quarter, due to W3 effluents. Therefore, 2017 results did not trigger any radiological monitoring program special reports.

Radioactivity Not Attributable to W3 The W3 REMP detected radioactivity attributable to other sources three times. These include the 25th Chinese nuclear test explosion in 1980, the radioactivity plume release due to reactor core degradation at the Chernobyl Nuclear Power Plant in 1986, and the airborne release from Dai-ichi, Fukushima following the Tohoku earthquake on March 11, 2011.

Comparison to State Program W3 compared REMP data to the monitoring program of the Environmental Radiological Laboratory -

Department of Environmental Quality Laboratory Services Division (ERL-DEQLSD). The ERL-DEQLSD and the W3 REMP entail similar radiological environmental monitoring program requirements. Both programs have obtained similar results over previous years.

Sample Deviations

¨ Milk Samples Since milk samples for indicator location MKE-3 were unavailable for all quarters of 2017, broad leaf vegetation sampling was performed as required by TRM Table 3.12-1. Broad leaf vegetation results are in section 2.7. Milk samples were collected from one control location and analyzed for Iodine-131 and gamma radionuclides. Results indicate that all measurements were below the calculated LLDs.

Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2017.

¨ Air Samples The air sample location listed below failed to meet the requirement for sample continuity. As described in footnote (1) of TRM Table 3.12-1, deviations are permitted from the required sampling schedule due to malfunction of sampling equipment and other legitimate reasons.

Location Sample Period Explanation of Deviation APF-1 02/13/17 - 02/27/17 Sample pump tripped APP-1 07/31/17 - 08/14/17 Same pump not running at full capacity APC-1 03/13/17 - 03/27/17 Sample pump not running at full capacity APE-26 07/03/17 - 07/17/17 Sample pump tripped 2

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station

¨ Missed Samples There were no missing TLDs during all quarters of 2017.

¨ Required Lower Limit of Detection (LLD) Values All LLDs during this reporting period were within the acceptable limits required by the W3 TRM.

¨ Unavailable Results W3 received analytical results in adequate time for inclusion in this report. In addition, W3s review identified no missing results.

¨ Program Modifications REMP TLD location (E-30) and control air sample location (APE-30) was moved from the Entergy Delaronde Street building to the Entergy Virgil Street building (E-26, APE-26). The location was changed because Entergy is selling the Delaronde Street building. Changes were made to the ODCM in revision 307.

3

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Attachments contains results of air, TLD, water, sediment, milk, fish and broad leaf vegetation collected in 2017. TLDs were analyzed by Stanford Dosimetry. All remaining samples were analyzed by Teledyne Brown Engineering, Inc. Attachment 1 also contains Teledynes participation in the interlaboratory comparison program during 2017. contains statistical comparisons of:

• TLD measurements from stations grouped by distance

• TLD radiation dose to historical data by location

• Gross beta activity measurements on air particulate filters

• Gross beta activity measurements in surface/drinking water samples 4

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station 1.0 Introduction 1.1 Radiological Environmental Monitoring Program W3 established the REMP to ensure that plant operating controls properly function to minimize any associated radiation endangerment to human health or the environment. The REMP is designed for:

• Analyzing important pathways for anticipated types and quantities of radionuclides released into the environment.

• Considering the possibility of a buildup of long-lived radionuclides in the environment and identifying physical and biological accumulations that may contribute to human exposures.

• Considering the potential radiation exposure to plant and animal life in the environment surrounding W3.

• Correlating levels of radiation and radioactivity in the environment with radioactive releases from station operation.

1.2 Pathways Monitored The airborne, direct radiation, waterborne and ingestion pathways are monitored as required by W3 TRM Table 3.12-1. A description of the W3 REMP utilized to monitor the exposure pathways is described in Table 1.1 and shown in Figures 1-1, 1-2 and 1-3.

Section 2.0 of this report provides a discussion of 2017 sampling results with Section 3.0 providing a summary of results for the monitored exposure pathways.

1.3 Land Use Census W3 conducts a land use census biennially, as required by Section 3.12.2 of the TRM. The purpose of this census is to identify changes in uses of land within five miles of W3 that would require modifications to the REMP and the Offsite Dose Calculation Manual (ODCM). The most important criteria during this census are to determine the location in each sector of the nearest:

1) Residence

2) Animal milked for human consumption 2 2

3) Garden of greater than 50 m (500 ft ) producing broad leaf vegetation.

W3 conducts the land use census by:

• Field surveys in each meteorological sector out to five miles in order to confirm:

Ø Nearest permanent residence

Ø Nearest garden and approximate size

Ø Nearest beef cow

Ø Nearest food product

Ø Nearest milking animal

• Identifying locations on maps, measuring distances to W3 and recording results on data sheets.

• Comparing current census results to previous results.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Radioiodine and Particulates Airborne Three samples from close to the three APQ-1 (NW, 0.81 Miles) - (West bank) Continuous sampler operation Radioiodine Canister - I-131 SITE BOUNDARY locations, in different Located in soybean/sugarcane field off with sample collection bi- analysis bi-weekly.

sectors, in or near sectors having the LA 18 east of LA 18/3141 intersection.

highest calculated annual average weekly, or more frequently if ground level D/Q. APF-1 (ESE, 0.35 Miles) - (West bank) required by dust loading. Particulate Sampler - Gross Located on north side of Secondary beta radioactivity analysis Meteorological Tower. following filter change. Gamma isotopic analysis of composite APC-1 (NE, 0.67 Miles) - (East bank)

(by location) quarterly.

Located inside Little Gypsy Cooling Water Intake Structure fence.

Radioiodine and Particulates One sample from the vicinity of a APP-1 (WNW, 0.84 Miles) - (West bank) community having the highest Located in soybean/sugarcane field on calculated annual average ground level Short St. in Killona.

D/Q.

Radioiodine and Particulates One sample from a control location, as APE-26 (E, 25.8 Miles) - (West bank) for example 15 -30 km distant and in Located at Entergy office on Virgil Street in the least prevalent wind direction. Gretna. (Control) 6

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation An inner ring of stations, one in each A-2 (N, 1.27 Miles) - (East bank) Located Quarterly Gamma dose quarterly.

meteorological sector in the general on pole on LA 628 at Zephrin L. Perriloux area of the SITE BOUNDARY. Fire House.

B-1 (NNE, 0.75 Miles) - (East bank)

Located on fence west of Little Gypsy.

C-1 (NE, 0.67 Miles) - (East bank) Located on fence at Little Gypsy Cooling Water Intake structure.

D-2 (ENE, 1.24 Miles) - (East bank)

Located on pole on levee at west entrance to Bonnet Carre Spillway.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation An inner ring of stations, one in each E-1 (E, 0.41 Miles) - (West bank) Located on Quarterly Gamma dose quarterly.

meteorological sector in the general pole on LA 18 east of Waterford 3 plant area of the SITE BOUNDARY. entrance.

F-2 (ESE, 1.15 Miles) - (West bank) Located on fence on LA 3142 south of LA 18.

G-2 (SE, 1.26 Miles) - (West bank) Located on fence on LA 3142 north of railroad overpass.

H-2 (SSE, 1.54 Miles) - (West bank) Located on fence on LA 3142 north of LA 3127/3142 intersection.

8

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation An inner ring of stations, one in each J-2 (S, 1.38 Miles) - (West bank) Located on Quarterly Gamma dose quarterly.

meteorological sector in the general fence south of LA 3127 west of LA 3127/3142 area of the SITE BOUNDARY. intersection.

K-1 (SSW, 1.06 Miles) - (West bank) Located on stop sign at entrance to Entergy Education Center on LA 3127.

L-1 (SW, 1.06 Miles) - (West bank) Located on gate on LA 3127 west of LA 3127/3142 intersection.

M-1 (WSW, 0.76 Miles) - (West bank)

Located on south gate of Waterford 1 and 2.

N-1 (W, 0.98 Miles) - (West bank) Located on pole at corner of Railroad Avenue and School House Road.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation An inner ring of stations, one in each P-1 (WNW, 0.84 Miles) - (West bank) Located Quarterly Gamma dose quarterly.

meteorological sector in the general on fence enclosing air sample station APP-1.

area of the SITE BOUNDARY.

Q-1 (NW, 0.81 Miles) - (West bank) Located on fence enclosing air sample station APQ-1.

R-1 (NNW, 0.51 Miles) - (West bank) Located at Waterford 1 and 2 Cooling Water Intake Structure.

TLDs An outer ring of stations, 1 in 10 of the A-5 (N, 4.59 Miles) - (East bank) Located on meteorological sectors in the 6 to 8 km pole at intersection of Oswald Avenue and US ranges from the site. 61.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation An outer ring of stations, 1 in 10 of the B-4 (NNE, 3.75 Miles) - (East bank) Located Quarterly Gamma dose quarterly.

meteorological sectors in the 6 to 8 km on pole near weigh station on US 61.

ranges from the site.

D-5 (ENE, 4.09 Miles) - (East bank) Located on gate on shell road north of US61/LA48 intersection.

F-4 (ESE, 3.53 Miles) - (West bank) Located on pole behind house at 646 Aquarius St. in Hahnville.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation An outer ring of stations, 1 in 10 of the E-5 (E, 4.08 Miles) - (East bank) Located on Quarterly Gamma dose quarterly.

meteorological sectors in the 6 to 8 km fence on Wesco Street off LA 48.

ranges from the site.

G-4 (SE, 3.30 Miles) - (West bank) Located on pole on LA 3160 north of railroad track.

H-8 (SSE, 8.13 Miles) - (West bank) Located on pole in front of Hahnville High School.

P-6 (WNW, 5.58 Miles) - (West bank) Located on fence at LA 640/railroad track intersection.

Q-5 (NW, 5.01 Miles) - (West bank) Located on pole on LA 18 across from Mississippi River marker 137.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation An outer ring of stations, 1 in 10 of the R-6 (NNW, 5.52 Miles) - (East bank) Located on Quarterly Gamma dose quarterly.

meteorological sectors in the 6 to 8 km fence on LA 3223 near railroad crossing.

ranges from the site.

TLDs The balance of the stations to be in F-9 (ESE, 8.18 Miles) - (East bank) Located on special interest areas such as fence north of railroad tracks on Jonathan Street.

population centers, nearby residences, schools, and in 1 or 2 areas to serve G-8 (SE, 7.74 Miles) - (West bank) Located on as control stations. back fence of Luling Entergy Office.

E-15 (E, 11.7 Miles) - (East bank) Located on fence on Alliance Avenue.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Direct TLDs Radiation The balance of the stations to be in J-15 (S, 11.7 Miles) - (West bank) Located on pole Quarterly Gamma dose quarterly.

special interest areas such as near LA 631/Hwy 90 intersection in Des Allemands.

population centers, nearby residences, schools, and in 1 or 2 areas to serve E-26 (E, 25.8 Miles) - (West bank) Located at Entergy as control stations. office on Virgil Street in Gretna. (Control)

Waterborne Surface Water One sample upstream SWP-7 (WNW, 7.37 Miles) - (West bank) Located at Composite sample over Gamma isotopic analysis St. John Parish Waterworks in Edgard. (Control) one quarter period. quarterly. Composite for SWF-2 (ESE, 1.51 Miles) - (West bank) Located at tritium analysis quarterly.

One sample downstream Dow Chemical Plant drinking water canal.

SWE-5 (E, 4.59 Miles) - (East bank) Located at St.

Charles Parish Waterworks in New Sarpy.

SWK-1 (SSW, 0.49 Miles) - (West bank) Located at 40 Arpent Canal south of the plant.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Waterborne Drinking Water One sample upstream DWP-7 (WNW, 7.37 Miles) - (West bank) Located Composite sample over one I-131 analysis on each at St. John Parish Waterworks in Edgard. (Control) month period when I-131 composite when the dose DWF-2 (ESE, 1.51 Miles) - (West bank) Located at analysis is performed, quarterly calculated for the consumption of One sample downstream Dow Chemical Plant drinking water canal. composite otherwise. the water is greater than one mrem per year. Composite for DWE-5 (E, 4.59 Miles) - (East bank) Located at St.

Charles Parish Waterworks in New Sarpy. gross beta and gamma isotopic analyses quarterly. Composite for tritium analysis quarterly.

Sediment from Shoreline One sample upstream SHWQ-6 (NW, 5.99 Miles) - (East bank) Located Annually Gamma isotopic analysis on LA 628 east of Reserve ferry landing. (Control) annually.

SHWE-3 (E, 2.99 Miles) - (West bank) Located at One sample downstream Foot Ferry landing on LA 18.

SHWK-1 (SSW, 0.49 Miles) - (West bank) Located at 40 Arpent Canal south of plant.

Ingestion Milk Samples from milking animals in the MKE-3 (E, 2.35 Miles) - (West bank) Located at the Quarterly Gamma isotopic and I-131 three locations within 5 km distance Zeringues house on LA 18 in Taft.

having the highest dose potential. If analysis quarterly.

there are none, then, one sample from milking animals in each of the three areas between 5 to 8 km distant where doses are calculated to be greater than 1 mrem per year .

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Radiological Environmental Sampling Program Exposure Requirement Sample Point Description, Sampling and Type and Frequency Pathway Distance and Direction Collection Frequency Of Analyses Ingestion Milk One sample from milking animals at a MKA-31 (N, 31.2 Miles) - (East bank) Located at Quarterly Gamma isotopic and I-131 control location 15 - 30 km distant and 18736 Sisters Road, Ponchatoula, LA. (Control) analysis quarterly.

in the least prevalent wind direction.

Fish and Invertebrates -

One sample of each commercially and FH-2 (Distance/Direction Not Applicable) - Sample in season, or Gamma isotopic analysis recreational important species in vicinity Downstream of the plant discharge structure. annually if they are not on edible portion.

of plant discharge area. seasonal FH-3 (Distance/Direction Not Applicable) -

(Westbank) Waterways downstream of plant discharge directed to 40 Arpent Canal.

One sample of same species in area FH-1 (Distance/Direction Not Applicable) -

not influenced by plant discharge. Upstream of the plant intake structure. (Control)

Broadleaf Samples of one to three different kinds BLQ-1 (NW, 0.83 Miles) - (West bank) Located near Quarterly Gamma isotopic and I-131 of broadleaf vegetation grown nearest air sample station APQ-1.

analysis.

each of two different off-site locations of highest predicted annual average BLB-1 (NNE, 0.81 Miles) - (East bank) Located west ground level D/Q if milk sampling is not of Little Gypsy on LA 628.

performed.

One sample of each of the similar BLE-20 (E, 19.7 Miles) - (West bank) Located on broadleaf vegetation grown 15 - 30 km property of Nine Mile Point in Westwego. (Control) distant in the least prevalent wind direction if milk sampling is not performed.

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All probiems according to Preflight profile NRC-i OCFR 1_i 0 IU II 2017 Environmental Operatinq Report Waterford 3 Steam Electric Station FIGURE 1-2 Sample Types REM r ftit bi road Lei Santars System TLD SirborrTLD Fish 18

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station FIGURE 1-3 19

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station 2.0 Interpretation and Trends of Results 2.1 Air Particulate and Radioiodine Sample Results Samples of airborne particulate and radioiodine were collected at four indicator locations and one control location and analyzed for gross beta radionuclides, Iodine-131 and gamma radionuclides (quarterly air particulate filter composites only). W3 did not detect any gamma radionuclides in the quarterly air particulate composites or Iodine-131 in the radioiodine cartridges during the reporting period as has been the case in previous years. Indicator gross beta air particulate results for 2017 were similar to those background levels obtained in previous years of the operational REMP and well below preoperational levels as seen below. Results are reported as 3

annual average pCi/m .

Monitoring Period Result Preoperational 0.080 1983 - 2016 0.020 2017 0.018 Table 3.1, which includes gross beta concentrations for 2017, provides a comparison of the indicator and control means. It further emphasizes that the airborne pathway continues to remain at background levels. In addition, as shown in Attachment 2, the standard "t" test was used to compare average gross beta activity from each indicator station to the average gross beta activity at the control station. The results from this test show the average activity detected at all indicator stations is statistically the same as the average activity detected at the control station. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2017.

2.2 Thermoluminescent Dosimetry Sample Results The average exposure rates during 2017 are consistent with those from the preoperational program and the previous five years of operation as seen in Figure 2-1. In particular, the preoperational survey indicates that exposure rates ranged between 11 and 33 mrem/standard quarter with an average of 20 mrem/standard quarter. The range during the previous five years of operation was 8 to 16 mrem/standard quarter with an average exposure rate of 12 mrem/standard quarter.

A comparison of the indicator results to the control results, as seen in Table 3.1, shows that the average indicator is slightly higher than that of the control. As shown in Attachment 1, Table 2.1, several indicator locations are higher than the control by a few mrem with a maximum difference of seven mrem.

As shown in Attachment 2, Table 2.1, the standard t test was used to compare average exposure rates for TLD stations located in groups 0-2 miles and 2-5 miles from the plant to those

> 5 miles. The results indicate that the average exposure rates 0-2 miles from the plant are statistically the same as >5 miles while those 2-5 miles are statistically higher.

The differences between indicator locations and the control, and TLD stations grouped by distance from the plant are expected due to a variety of factors not related to W3 plant operations that can affect background radiation in the vicinity of each TLD station. Direct radiation measurements at each TLD station have remained statistically the same in 2017 as previous years of operation as evidenced on Attachment 2, Table 2.2. In addition, Radiological Gaseous Effluents for 2017 were only a small fraction of the limits and are not expected to have any impact on environmental TLD measurements.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station 2.3 Water Sample Results Analytical results for 2017 drinking/surface water samples were similar to those reported in previous years.

Drinking/Surface Water Drinking water samples also serve as surface water samples for W3. Therefore, monthly and quarterly gamma spectroscopy and tritium analyses of drinking water also satisfy the surface water sampling requirement.

Composite drinking/surface water samples were collected from two indicators and one control location and analyzed for Iodine-131, gamma radionuclides and tritium. Results indicate that all measurements were below the calculated LLDs.

Although gross beta was detected in the drinking/surface water samples, results for the indicator locations were similar to those background levels obtained in previous years of operational REMP, and well below preoperational years as seen below. Results are reported as annual average pCi/l.

Monitoring Period Result Preoperational 7.0 1983 - 2016 4.7 2017 4.8 Table 3.1, which includes gross beta concentrations for 2017, provides a comparison of the indicator and control means. It shows that the waterborne pathway continues to remain at background levels. In addition, as shown in Attachment 2, the standard "t" test was used to compare average gross beta activity from each indicator station to the average gross beta activity at the control station. The results from the test show the average activity detected at each indicator station is statistically the same as the average activity detected at the control station.

Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2017.

Surface Water Surface water samples were collected from one indicator location and analyzed for gamma radionuclides and tritium. Results indicate that all measurements were below the calculated LLDs. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2017.

2.4 Sediment Sample Results Sediment samples were collected from two indicator locations and one control location and analyzed for gamma radionuclides. Results indicate that all measurements were below the calculated LLDs. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2017.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station 2.5 Milk Sample Results Since milk samples for indicator location MKE-3 were unavailable for all quarters of 2017, broad leaf vegetation sampling was performed as required by TRM Table 3.12-1. Broad leaf vegetation results are in section 2.7. Milk samples were collected from one control location and analyzed for Iodine-131 and gamma radionuclides. Results indicate that all measurements were below the calculated LLDs. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2017.

2.6 Fish Sample Results Fish samples were collected from two indicators and one control location and analyzed for gamma radionuclides. Results indicate that all measurements were below the calculated LLDs.

Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2017.

2.7 Broadleaf Vegetation Sample Results Broadleaf vegetation samples were collected from two indicators and one control location and analyzed for Iodine-131 and gamma radionuclides. Results indicate that all measurements were below the calculated LLDs. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2017.

2.8 Land Use Census Results In compliance with the Waterford 3 ODCM and TRM, the land use census was conducted September 19 - September 21, 2016. The nearest residence, garden, beef cow, food product and milk animal in each sector within a five mile radius of the plant was located by visual inspection and verbal inquiry.

Four new garden locations (sectors A, C, D, and Q), one new resident location (sector P), two new goat locations (sectors A and E), and two new beef cow locations (sectors B and E) were identified in 2016. Food product and milk cow locations remained unchanged for 2016. Based upon the locations identified in this survey, the locations identified in previous surveys and the locations currently being used to calculate dose commitments from liquid and gaseous effluents released from W3, no REMP sampling location changes are necessary. Results of the 2016 biennial census are shown in Table 2.1.

2.9 Interlaboratory Comparison Results Teledyne Brown Engineering, Inc. analyzed interlaboratory comparison samples for W3 to fulfill the requirements of Section 5.7.2 of the ODCM. Attachment 1 contains these results.

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Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE 2.1 Biennial Land Use Census Results Sector Direction Distance from Plant in Miles Milk Beef Food Residence Garden Cows Cows Goats Products A N 1.3 1.7 ^ 4.8 *4.8 4.1 B NNE 1.1 1.3 ^ 1.7 ^ 1.3 C NE 0.9 1.0 ^ ^ ^ ^

D ENE 0.9 0.8 ^ ^ ^ ^

E E 2.2 2.3 **2.3 2.3

• 2.4 0.3 F ESE 3.1 2.3 ^ 2.3 ^ 0.3 G SE 4.0 4.1 ^ 2.4 ^ 0.3 H SSE ^ ^ ^ ^ ^ 0.3 J S ^ ^ ^ ^ ^ 0.5 K SSW ^ ^ ^ ^ ^ 0.5 L SW ^ ^ ^ ^ ^ 0.5 M WSW ^ 1.4 ^ 1.2 ^ 0.5 N W 1.0 1.1 ^ 1.0 ^ 0.6 P WNW 0.9 0.9 ^ ^ ^ 0.6 Q NW 0.9 1.1 ^ ^ ^ 0.6 R NNW 3.0 3.0 ^ 4.9 ^ 2.6

^ Indicates that nothing was found in the sector within a five mile radius of Waterford 3

• Animals were located at this distance from Waterford 3, but the milk is not currently used for human consumption

• • Samples are being obtained from animals at this location (MKE-3) for REMP 23

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station FIGURE 2-1 24

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station 3.0 Radiological Environmental Monitoring Program Summary 3.1 2017 Program Results Summary Table 3.1 summarizes the 2017 REMP results. W3 did not use values reported as less than the lower limit of detection (< LLD) when determining ranges and means for indicator and control locations.

25

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Waterford 3 SES Docket No: 50-382 Location of Facility: St. Charles, Louisiana Reporting Period: January - December 2017 Sample Type Type & Number LLD b Indicator Locations Location with Highest Annual Control Number of

( Units ) Of Analyses a Mean ( F ) c Mean Locations Nonroutine

[ Range ] Mean ( F ) c Results e

[ Range ]

Mean ( F ) c Location d [ Range ]

Airborne Particulates GB 135 0.01 0.018( 106 / 108 ) APF-1 0.019 ( 27 / 27 ) 0.019 ( 26 / 27 ) 0

( pCi/m3 ) [ 0.007 - 0.037 ] (ESE, 0.35 mi.) [ 0.008 - 0.037 ] [ 0.012 - 0.042 ]

GS 20 Cs-134 0.05 <LLD N/A N/A <LLD 0 Cs-137 0.06 <LLD N/A N/A <LLD 0 Airborne Iodine I-131 135 0.07 <LLD N/A N/A <LLD 0

( pCi/m3 )

Indicator TLDs Gamma 120 (f) 11 ( 120 / 120 ) F-4 13.8 ( 4 / 4 ) N/A 0

( mrem/Std. Qtr ) [ 8.4 - 16.0 ] (ESE, 3.53 mi.) [ 13.5 - 13.8 ]

Control TLDs Gamma 4 (f) N/A N/A N/A 9(4/4) 0

( mrem/Std. Qtr ) [ 8.6 -9.4 ]

26

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Waterford 3 SES Docket No: 50-382 Location of Facility: St. Charles, Louisiana Reporting Period: January - December 2017 Sample Type Type & Number LLD b Indicator Location Location with Highest Annual Mean Control Number of

( Units ) of Analyses a Mean ( F ) c Locations Nonroutine

[ Range ] Mean ( F ) c Results e

[ Range ]

Mean ( F ) c Location d [ Range ]

Surface Water & Gross Beta 12 4 4.8 ( 8 / 8 ) DWF/SWF-2 5.4 ( 4 / 4 ) 4.7 ( 4 / 4 ) 0 Drinking Water [ 3.3 - 8.7 ] (ESE, 1.51 mi.) [ 3.4 - 8.7 ] [ 2.6 - 6.5 ]

( pCi/l )

I-131 40 1 <LLD N/A N/A <LLD 0 H-3 12 2000 <LLD N/A N/A <LLD 0 GS 12 Mn-54 15 <LLD N/A N/A <LLD 0 Fe-59 30 <LLD N/A N/A <LLD 0 Co-58 15 <LLD N/A N/A <LLD 0 Co-60 15 <LLD N/A N/A <LLD 0 Zn-65 30 <LLD N/A N/A <LLD 0 Zr-95 15 <LLD N/A N/A <LLD 0 Nb-95 15 <LLD N/A N/A <LLD 0 Cs-134 15 <LLD N/A N/A <LLD 0 Cs-137 18 <LLD N/A N/A <LLD 0 Ba-140 15 <LLD N/A N/A <LLD 0 La-140 15 <LLD N/A N/A <LLD 0 27

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Waterford 3 SES Docket No: 50-382 Location of Facility: St. Charles, Louisiana Reporting Period: January - December 2017 Sample Type Type & LLD b Indicator Locations Location with Highest Annual Mean Control Locations Number of

( Units ) Number Mean ( F ) c Mean ( F ) c Nonroutine of Analyses a [ Range ] [ Range ] Results e Mean ( F ) c Location d [ Range ]

Surface Water H-3 4 3000 <LLD N/A N/A N/A 0

( pCi/l )

GS 13 Mn-54 15 <LLD N/A N/A N/A 0 Fe-59 30 <LLD N/A N/A N/A 0 Co-58 15 <LLD N/A N/A N/A 0 Co-60 15 <LLD N/A N/A N/A 0 Zn-65 30 <LLD N/A N/A N/A 0 Zr-95 15 <LLD N/A N/A N/A 0 Nb-95 15 <LLD N/A N/A N/A 0 Cs-134 15 <LLD N/A N/A N/A 0 Cs-137 18 <LLD N/A N/A N/A 0 Ba-140 15 <LLD N/A N/A N/A 0 La-140 15 <LLD N/A N/A N/A 0 I-131 15 <LLD N/A N/A N/A 0 Shoreline GS 3 Sediment Cs-134 150 <LLD N/A N/A <LLD 0

( pCi/kg dry)

Cs-137 180 <LLD N/A N/A <LLD 0 28

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Waterford 3 SES Docket No: 50-382 Location of Facility: St. Charles, Louisiana Reporting Period: January - December 2017 Sample Type Type & Number LLD b Indicator Location Location with Highest Annual Mean Control Number of

( Units ) of Analyses a Mean ( F ) c Locations Nonroutine

[ Range ] Mean ( F ) c Results e

[ Range ]

Mean ( F ) c Location d [ Range ]

Milk I-131 4 1 < LLD N/A N/A <LLD 0

( pCi/l )

GS 4 Cs-134 15 < LLD N/A N/A <LLD 0 Cs-137 18 < LLD N/A N/A <LLD 0 Ba-140 15 < LLD N/A N/A <LLD 0 La-140 15 < LLD N/A N/A <LLD 0 Fish GS 12

( pCi/kg wet ) Mn-54 130 <LLD N/A N/A <LLD 0 Fe-59 260 <LLD N/A N/A <LLD 0 Co-58 130 <LLD N/A N/A <LLD 0 Co-60 130 <LLD N/A N/A <LLD 0 Zn-65 260 <LLD N/A N/A <LLD 0 Cs-134 130 <LLD N/A N/A <LLD 0 Cs-137 150 <LLD N/A N/A <LLD 0 Broadleaf Vegetation I-131 12 60 <LLD N/A N/A <LLD 0

( pCi/kg wet )

GS 12 Cs-134 60 <LLD N/A N/A <LLD 0 Cs-137 80 <LLD N/A N/A <LLD 0 a GB = Gross beta; I-131 = Iodine-131; H-3 = Tritium; GS = Gamma scan.

b LLD = required lower limit of detection based on Waterford 3 TRM.

c Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis (F).

d Locations are specified (1) by name and (2) degrees relative to reactor site.

e Non-routine results are those which exceed ten times the control station value. If no control station value is available, the result is considered non-routine if it exceeds ten times the preoperational value for the location.

f LLD is not defined in Waterford 3 TRM.

29

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Attachment 1 2017 Radiological Monitoring Report Summary of Monitoring Results 30

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE OF CONTENTS TABLE 1.1 AIR PARTICULATE FILTER 32 TABLE 1.2 RADIOIODINE CARTRIDGE 33 TABLE 1.3 AIR PARTICULATE FILTER 34 TABLE 2.1 THERMOLUMINESCENT DOSIMETERS 35 TABLE 3.1 DRINKING/SURFACE WATER 36 TABLE 3.2 DRINKING/SURFACE WATER 37 TABLE 3.3 DRINKING/SURFACE WATER 38 TABLE 3.4 DRINKING/SURFACE WATER 39 TABLE 3.5 SURFACE WATER 40 TABLE 4.1 SEDIMENT 41 TABLE 5.1 MILK 42 TABLE 6.1 FISH 43 TABLE 7.1 BROADLEAF VEGETATION 44 TABLE 8.1 INTERLABORATORY COMPARISON 45 31

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.1 Sample Type: Air Particulate Filter Analysis: Gross Beta Units: pCi/m3 End Date APF-1 APQ-1 APP-1 APC-1 APE-26/30 (Indicator) (Indicator) (Indicator) (Indicator) (Control)

Required LLD 0.01 0.01 0.01 0.01 0.01 01-03-17 0.0145 0.0142 0.0144 0.0126 0.0164 01-16-17 0.0179 0.0194 0.0163 0.0152 0.0161 01-30-17 0.0164 0.0139 0.0140 0.0142 0.0147 02-13-17 0.0219 0.0239 0.0179 0.0220 0.0201 (1) 02-27-17 0.0157 0.0123 0.0131 0.0134 0.0121 03-13-17 0.0207 0.0134 0.0159 0.0153 0.0172 (2) 03-27-17 0.0272 0.0232 0.0091 0.0768 0.0258 04-10-17 0.0188 0.0195 0.0157 0.0202 0.0191 04-24-17 0.0177 0.0135 0.0125 0.0139 0.0163 05-08-17 0.0207 0.0176 0.0198 0.0155 0.0202 05-22-17 0.0150 0.0136 0.0163 0.0140 0.0170 06-05-17 0.0147 0.0117 0.0127 0.0135 0.0147 06-19-17 0.0126 0.0160 0.0147 0.0148 0.0146 07-03-17 0.0163 0.0141 0.0155 0.0147 0.0166 (1) 07-17-17 0.0079 0.0074 0.0090 0.0076 0.0457 07-31-17 0.0166 0.0163 0.0141 0.0157 0.0194 (2) 08-14-17 0.0132 0.0130 0.0480 0.0145 0.0179 08-28-17 0.0158 0.0146 0.0176 0.0176 0.0164 09-11-17 0.0252 0.0218 0.0252 0.0240 0.0238 09-25-17 0.0211 0.0183 0.0200 0.0187 0.0225 10-09-17 0.0180 0.0165 0.0186 0.0178 0.0174 10-23-17 0.0188 0.0148 0.0143 0.0149 0.0167 11-06-17 0.0164 0.0145 0.0154 0.0146 0.0171 11-20-17 0.0271 0.0248 0.0237 0.0250 0.0229 12-04-17 0.0366 0.0367 0.0363 0.0365 0.0410 12-18-17 0.0225 0.0208 0.0230 0.0187 0.0198 01-02-18 0.0233 0.0210 0.0216 0.0211 0.0245 (1)

Sample pump tripped (2)

Sample pump not running at full capacity 32

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.2 Sample Type: Radioiodine Cartridge Analysis: Iodine-131 3

Units: pCi/m End Date APF-1 APQ-1 APP-1 APC-1 APE-26/30 (Indicator) (Indicator) (Indicator) (Indicator) (Control)

Required LLD 0.07 0.07 0.07 0.07 0.07 01-03-17 < 0.0133 < 0.0282 < 0.0293 < 0.0268 <0.0296 01-16-17 < 0.0366 < 0.0326 < 0.0339 < 0.0173 <0.0342 01-30-17 < 0.0146 < 0.0317 < 0.0328 < 0.0317 < 0.0332 02-13-17 < 0.0189 < 0.0401 < 0.0415 < 0.0389 < 0.0427 (1) 02-27-17 < 0.0498 < 0.0352 < 0.0367 < 0.0139 < 0.0372 03-13-17 < 0.0123 < 0.0274 < 0.0286 < 0.0264 < 0.0289 (2) 03-27-17 < 0.0316 < 0.0298 < 0.0310 < 0.0414 < 0.0316 04-10-17 < 0.0319 < 0.0300 < 0.0312 < 0.0315 < 0.0133 04-24-17 < 0.0168 < 0.0287 < 0.0298 < 0.0266 < 0.0304 05-08-17 < 0.0412 < 0.0370 < 0.0406 < 0.0358 < 0.0162 05-22-17 < 0.0297 < 0.0271 < 0.0299 < 0.0264 < 0.0128 06-05-17 < 0.0463 < 0.0177 < 0.0464 < 0.0177 < 0.0475 06-19-17 < 0.0378 < 0.0342 < 0.0378 < 0.0334 < 0.0163 07-03-17 < 0.0127 < 0.0274 < 0.0302 < 0.0267 < 0.0311 (1) 07-17-17 < 0.0288 < 0.0262 < 0.0289 < 0.0108 < 0.3840 07-31-17 < 0.0152 < 0.0311 < 0.0343 < 0.0304 < 0.0410 (2) 08-14-17 < 0.0166 < 0.0151 < 0.0687 < 0.0148 < 0.0172 08-28-17 < 0.0424 < 0.0386 < 0.0171 < 0.0380 < 0.0371 09-11-17 < 0.0156 < 0.0257 < 0.0270 < 0.0253 < 0.0269 09-25-17 < 0.0146 < 0.0315 < 0.0329 < 0.0309 < 0.0328 10-09-17 < 0.0136 < 0.0351 < 0.0367 < 0.0345 < 0.0364 10-23-17 < 0.0220 < 0.0238 < 0.0249 < 0.0234 < 0.0247 11-06-17 < 0.0201 < 0.0438 < 0.0454 < 0.0429 < 0.0453 11-20-17 < 0.0182 < 0.0392 < 0.0410 < 0.0385 < 0.0413 12-04-17 < 0.0174 < 0.0376 < 0.0393 < 0.0375 < 0.0390 12-18-17 < 0.0200 < 0.0433 < 0.0451 < 0.0428 < 0.0449 01-02-18 < 0.0147 < 0.0319 < 0.0332 < 0.0316 < 0.0335 (1)

Sample pump tripped (2)

Sample pump not running at full capacity 33

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 1.3 Sample Type: Air Particulate Filter Analysis: Gamma Isotopic Units: pCi/m3 Location Quarterly Cs-134 Cs-137 Composite Required LLD 0.05 0.06 APF-1 (Indicator) 1st < 0.003 < 0.004 APQ-1 (Indicator) 1st < 0.003 < 0.003 APP-1 (Indicator) 1st < 0.004 < 0.003 APC-1 (Indicator) 1st < 0.005 < 0.004 APE-26/30 (Control) 1st < 0.005 < 0.002 APF-1 (Indicator) 2nd < 0.003 < 0.002 APQ-1 (Indicator) 2nd < 0.003 < 0.003 APP-1 (Indicator) 2nd < 0.003 < 0.003 APC-1 (Indicator) 2nd < 0.002 < 0.002 APE-26/30 (Control) 2nd < 0.003 < 0.002 APF-1 (Indicator) 3rd < 0.003 < 0.003 APQ-1 (Indicator) 3rd < 0.002 < 0.002 APP-1 (Indicator) 3rd < 0.005 < 0.003 APC-1 (Indicator) 3rd < 0.002 < 0.002 APE-26/30 (Control) 3rd < 0.005 < 0.004 APF-1 (Indicator) 4th < 0.002 < 0.002 APQ-1 (Indicator) 4th < 0.002 < 0.002 APP-1 (Indicator) 4th < 0.003 < 0.003 APC-1 (Indicator) 4th < 0.002 < 0.002 APE-26/30 (Control) 4th < 0.003 < 0.002 34

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 2.1 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Std. Qtr.

Indicator Locations Station 1st Qtr '17 2nd Qtr '17 3rd Qtr '17 4th Qtr '17 Annual Mean '17 A-2 13 13 12 11 12 A-5 12 13 12 12 12 B-1 13 12 13 12 13 B-4 13 13 13 13 13 C-1 9 9 9 9 9 D-2 12 12 12 12 12 D-5 11 11 11 11 11 E-1 11 11 11 11 11 E-5 12 12 12 12 12 E-15 11 10 10 10 10 F-2 12 11 12 11 12 (1)

F-4 14 14 14 14 14 F-9 11 12 12 11 11 G-2 10 10 10 9 10 G-4 11 10 10 11 11 G-8 10 10 10 9 10 H-2 10 10 10 10 10 H-8 12 16 10 13 13 J-2 10 9 10 10 10 J-15 12 12 10 10 11 K-1 10 10 10 11 10 L-1 13 12 12 13 13 M-1 10 9 10 9 10 N-1 10 10 10 9 10 P-1 9 9 9 9 9 P-6 13 13 12 13 13 Q-1 12 11 12 11 12 Q-5 12 14 9 12 12 R-1 9 8 9 8 9 R-6 10 9 9 9 9 Control Location Station 1st Qtr '17 2nd Qtr '17 3rd Qtr '17 4th Qtr '17 Annual Mean '17 E-26/30 9 9 9 9 9 (1)

Location with highest annual mean 35

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 3.1 Sample Type: Drinking/Surface Water Analysis: Gross Beta Units: pCi/l Quarterly DWF/SWF-2 DWE/SWE-5 DWP/SWP-7 Composite (Indicator) (Indicator) (Control)

Required LLD 4 4 4 1st` 4.31 3.68 4.57 nd 2 3.41 3.34 2.57 rd 3 8.74 5.20 5.25 th 4 5.32 4.77 6.54 36

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 3.2 Sample Type: Drinking/Surface Water Analysis: Iodine-131 Units: pCi/l Collection SWK-1 DWF/SWF-2 DWE/SWE-5 DWP/SWP-7 Date (Indicator) (Indicator) (Indicator) (Control)

LLD 15 1 1 1 01-24-17(1) < 0.94 01-24-17 < 4.18 < 0.65 < 0.75 < 0.79 02-21-17 < 4.31 < 0.44 < 0.40 < 0.43 03-21-17 < 1.86 < 0.37 < 0.33 < 0.47 04-18-17 < 2.79 < 0.52 < 0.59 < 0.59 05-16-17 < 4.18 < 0.20 < 0.27 < 0.28 06-13-17 < 2.30 < 0.73 < 0.81 < 0.69 07-11-17 < 2.29 < 0.93 < 0.80 < 0.84 08-08-17 < 2.69 < 0.41 < 0.47 < 0.49 09-05-17 < 1.65 < 0.40 < 0.45 < 0.38 10-03-17 < 3.39 < 0.38 < 0.36 < 0.42 10-31-17 < 1.92 < 0.29 < 0.31 < 0.31 11-27-17 < 3.44 < 0.33 < 0.41 < 0.39 12-27-17 < 4.28 < 0.44 < 0.40 < 0.44 (1)

Duplicate sample 37

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 3.3 Sample Type: Drinking/Surface Water Analysis: Gamma Isotopic Units: pCi/l Location Collection Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Date Required LLD 15 15 30 15 30 15 15 15 18 15 15 DWF/SWF-2 (Indicator) 1st < 1.88 < 2.00 < 4.44 < 1.84 < 3.85 < 1.99 < 3.67 < 2.12 < 1.94 < 14.50 < 4.79 DWE/SWE-5 (Indicator) 1st < 1.62 < 1.68 < 4.03 < 1.83 < 3.35 < 1.95 < 3.45 < 2.03 < 1.82 < 12.90 < 4.33 DWP/SWP-7 (Control) 1st < 1.62 < 1.73 < 3.95 < 1.72 < 3.45 < 1.96 < 3.25 < 1.81 < 1.77 < 12.90 < 3.93 DWF/SWF-2 (Indicator) 2nd < 2.04 < 1.98 < 3.83 < 2.16 < 3.86 < 2.10 < 3.62 < 2.17 < 2.30 < 8.85 < 2.76 DWE/SWE-5 (Indicator) 2nd < 2.03 < 2.06 < 4.27 < 2.20 < 4.44 < 2.10 < 3.71 < 2.42 < 2.20 < 9.06 < 2.80 DWP/SWP-7 (Control) 2nd < 1.99 < 2.06 < 3.95 < 2.05 < 4.17 < 2.09 < 3.58 < 2.26 < 2.27 < 8.42 < 2.85 DWF/SWF-2 (Indicator) 3rd < 1.74 < 1.88 < 3.95 < 1.71 < 3.31 < 1.88 < 3.28 < 1.97 < 1.85 < 14.70 < 4.39 DWE/SWE-5 (Indicator) 3rd < 1.61 < 1.66 < 3.79 < 1.65 < 3.15 < 1.92 < 3.24 < 1.80 < 1.64 < 14.10 < 3.96 DWP/SWP-7 (Control) 3rd < 1.74 < 1.88 < 4.08 < 1.76 < 3.42 < 1.98 < 3.35 < 1.99 < 1.86 < 14.40 < 4.13 DWF/SWF-2 (Indicator) 4th < 1.94 < 1.90 < 3.98 < 1.82 < 3.98 < 2.02 < 3.45 < 2.11 < 2.05 < 11.70 < 4.18 DWE/SWE-5 (Indicator) 4th < 1.96 < 1.95 < 4.49 < 1.97 < 3.97 < 2.18 < 3.67 < 2.27 < 2.06 < 12.00 < 3.98 DWP/SWP-7 (Control) 4th < 1.57 < 1.72 < 3.52 < 1.74 < 3.13 < 1.72 < 3.01 < 1.88 < 1.67 < 10.10 < 3.34 38

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 3.4 Sample Type: Drinking/Surface Water Analysis: Tritium Units: pCi/l Quarter DWF/SWF-2 DWE/SWE-5 SWK-1 DWP/SWP-7 (Indicator) (Indicator) (Indicator) (Control)

Required LLD 2000 2000 3000 2000 1st < 631 < 629 < 627 < 628 2nd < 700 < 678 < 703 < 671 rd 3 < 562 < 560 < 568 < 565 th 4 < 597 < 595 < 597 < 600 39

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 3.5 Sample Type: Surface Water Analysis: Gamma Isotopic Units: pCi/l Location Collection Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Date Required LLD 15 15 30 15 30 15 15 15 18 15 15 SWK-1 01-24-17 < 3.42 < 3.16 < 6.34 < 3.19 < 6.33 < 3.21 < 5.40 < 3.11 < 3.53 < 14.80 < 4.14 (Indicator) 02-21-17 < 3.53 < 3.12 < 6.13 < 3.17 < 6.89 < 3.86 < 5.62 < 3.13 < 3.62 < 13.10 < 4.28 03-21-17 < 1.52 < 1.39 < 2.97 < 1.67 < 3.02 < 1.62 < 2.63 < 1.77 < 1.63 < 5.87 < 1.76 04-18-17 < 2.26 < 2.08 < 4.22 < 2.32 < 4.61 < 2.25 < 3.95 < 2.65 < 2.15 < 8.34 < 2.62 05-16-17 < 2.28 < 2.25 < 4.63 < 2.29 < 4.67 < 2.45 < 4.09 < 2.74 < 2.62 < 11.30 < 3.65 06-13-17 < 1.63 < 1.59 < 3.49 < 1.78 < 3.12 < 1.69 < 2.79 < 1.71 < 1.77 < 6.91 < 2.32 07-11-17 < 1.59 < 1.61 < 3.38 < 1.65 < 3.08 < 1.66 < 2.97 < 1.97 < 1.83 < 6.84 < 1.98 08-08-17 < 1.97 < 2.05 < 3.88 < 2.09 < 3.75 < 2.15 < 3.58 < 2.43 < 2.20 < 7.88 < 2.86 09-05-17 < 1.48 < 1.28 < 2.86 < 1.43 < 2.78 < 1.49 < 2.45 < 1.51 < 1.47 < 5.14 < 1.68 10-03-17 < 2.29 < 2.09 < 4.50 < 2.15 < 4.18 < 2.20 < 3.80 < 2.23 < 2.23 < 10.60 < 3.14 10-31-17 < 1.54 < 1.68 < 3.14 < 1.68 < 3.52 < 1.68 < 2.86 < 1.70 < 1.76 < 6.13 < 1.90 11-27-17 < 2.41 < 2.52 < 5.23 < 2.63 < 5.20 < 2.51 < 4.72 < 3.09 < 2.54 < 10.50 < 3.28 12-27-17 < 4.24 < 4.05 < 8.10 < 4.48 < 7.76 < 4.38 < 7.07 < 4.40 < 4.19 < 14.95 < 5.59 40

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 4.1 Sample Type: Sediment Analysis: Gamma Isotopic Units: pCi/kg (dry)

Location Collection Cs-134 Cs-137 Date Required LLD 150 180 SHWK-1 (Indicator) 03-13-17 < 94.0 < 81.9 SHWE-3 (Indicator) 03-13-17 < 83.9 < 60.2 SHWQ-6 (Control) 03-13-17 < 76.2 < 67.2 41

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 5.1 Sample Type: Milk Analysis: Iodine-131 and Gamma Isotopic Units: pCi/l Location Collection I-131 Cs-134 Cs-137 Ba-140 La-140 Date Required LLD 1 15 18 15 15 (1)

MKE-3 (Indicator) 03-09-17 n/a n/a n/a n/a n/a 06-08-17 n/a n/a n/a n/a n/a 09-14-17 n/a n/a n/a n/a n/a 12-14-17 n/a n/a n/a n/a n/a MKA-31 (Control) 03-09-17 < 0.78 < 4.05 < 4.06 < 14.70 < 4.35 06-08-17 < 0.45 < 3.54 < 3.12 < 12.70 < 4.19

. 09-14-17 < 0.23 < 3.01 < 3.00 < 14.80 < 5.21

. 12-14-17 < 0.77 < 4.49 < 5.16 < 13.90 < 4.75 (1)

Sample not available due to cows not producing enough milk. See page 2 for details.

42

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 6.1 Sample Type: Fish Analysis: Gamma Isotopic Units: pCi/kg (wet)

Location Collection Species Mn-54 Co-58 Fe-59 Co-60 Zn-65 Cs-134 Cs-137 Date Required LLD 130 130 260 130 260 130 150 FH-1 (Control) 10-15-17 Buffalo < 60.6 < 75.2 < 91.8 < 75.0 < 77.2 < 70.7 < 52.2 10-15-17 Carp < 80.0 < 83.9 < 189.0 < 88.3 < 170.0 < 90.3 < 86.5 10-15-17 Catfish < 47.2 < 49.9 < 109.0 < 35.0 < 101.0 < 35.1 < 54.2 10-15-17 Mullet < 45.7 < 48.9 < 118.0 < 43.8 < 105.0 < 52.8 < 47.9 FH-2 (Indicator) 10-15-17 Buffalo < 56.5 < 53.6 < 112.0 < 52.6 < 143.0 < 65.0 < 62.5 10-15-17 Carp < 43.8 < 50.0 < 89.6 < 54.7 < 96.6 < 60.1 < 47.2 10-15-17 Catfish < 55.7 < 52.1 < 111.0 < 75.5 < 66.0 < 65.0 < 59.1 10-15-17 Mullet < 77.7 < 61.6 < 136.0 < 73.8 < 155.0 < 75.0 < 74.1 FH-3 (Indicator) 10-10-17 Buffalo < 55.1 < 48.6 < 86.5 < 57.4 < 104.0 < 43.8 < 50.4 10-10-17 Carp < 66.4 < 61.2 < 124.0 < 67.4 < 164.0 < 56.2 < 63.1 10-17-17 Catfish < 78.0 < 83.1 < 113.0 < 77.6 < 168.0 < 81.5 < 81.1 10-10-17 Mullet < 47.9 < 70.0 < 152.0 < 46.0 < 118.0 < 68.8 < 68.2 43

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 7.1 Sample Type: Broad Leaf Vegetation Analysis: Iodine-131 and Gamma Isotopic Units: pCi/kg (wet)

Location Collection I-131 Cs-134 Cs-137 Date Required LLD 60 60 80 BLQ-1 (Indicator) 03-08-17 < 26.1 < 21.0 < 16.9 BLQ-1 (Indicator) 06-07-17 < 49.7 < 41.2 < 34.6 BLQ-1 (Indicator) 09-13-17 < 59.2 < 22.4 < 22.7 BLQ-1 (Indicator) 12-13-17 < 58.7 < 45.2 < 54.9 BLB-1 (Indicator) 03-08-17 < 27.4 < 23.4 < 20.2 BLB-1 (Indicator) 06-07-17 < 56.2 < 43.4 < 40.9 BLB-1 (Indicator) 09-13-17 < 58.4 < 22.2 < 21.8 BLB-1 (Indicator) 12-13-17 < 40.7 < 34.2 < 32.1 BLE-20 (Control) 03-08-17 < 29.2 < 21.6 < 20.9 BLE-20 (Control) 06-07-17 < 38.8 < 34.8 < 33.3 BLE-20 (Control) 09-13-17 < 55.8 < 21.2 < 21.1 BLE-20 (Control) 12-13-17 < 34.5 < 28.6 < 45.7 44

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 8.1 Sample Type: Interlaboratory Comparison Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Ratio of TBE to Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value (a) Analytics Result Value March 2017 E11811 Milk Sr-89 pCi/L 87 97.7 0.89 A Sr-90 pCi/L 12.4 16.2 0.77 A E11812 Milk Ce-141 pCi/L 135 145 0.93 A Co-58 pCi/L 153 150 1.02 A Co-60 pCi/L 182 183 1.00 A Cr-51 pCi/L 258 290 0.89 A Cs-134 pCi/L 104 120 0.87 A Cs-137 pCi/L 142 140 1.02 A Fe-59 pCi/L 135 129 1.05 A I-131 pCi/L 92.6 97.9 0.95 A Mn-54 pCi/L 173 164 1.05 A Zn-65 pCi/L 208 199 1.04 A E11813 Charcoal I-131 pCi 92 93.9 0.98 A E11814 AP Ce-141 pCi 99.9 101 0.99 A Co-58 pCi 95.4 104 0.92 A Co-60 pCi 140 127 1.10 A Cr-51 pCi 211 201 1.05 A Cs-134 pCi 82.1 83.2 0.99 A Cs-137 pCi 92.8 97.0 0.96 A Fe-59 pCi 107 89.3 1.20 A Mn-54 pCi 106 114 0.93 A Zn-65 pCi 137 138 0.99 A E11816 Soil Ce-141 pCi/g 0.258 0.250 1.03 A Co-58 pCi/g 0.241 0.258 0.93 A Co-60 pCi/g 0.312 0.315 0.99 A Cr-51 pCi/g 0.439 0.500 0.88 A Cs-134 pCi/g 0.176 0.207 0.85 A Cs-137 pCi/g 0.304 0.317 0.96 A Fe-59 pCi/g 0.210 0.222 0.95 A Mn-54 pCi/g 0.292 0.283 1.03 A Zn-65 pCi/g 0.353 0.344 1.03 A E11815 Water Fe-55 pCi/L 1600 1890 0.85 A (a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 45

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 8.1 Sample Type: Interlaboratory Comparison Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Ratio of TBE to Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value (a) Analytics Result Value June 2017 E11844 Milk Sr-89 pCi/L 81.3 92.6 0.88 A Sr-90 pCi/L 12.1 13.5 0.90 A E11846 Milk Ce-141 pCi/L 142 151 0.94 A Co-58 pCi/L 147 155 0.95 A Co-60 pCi/L 185 191 0.97 A Cr-51 pCi/L 321 315 1.02 A Cs-134 pCi/L 168 188 0.89 A Cs-137 pCi/L 148 150 0.99 A Fe-59 pCi/L 116 115 1.01 A I-131 pCi/L 102 93.6 1.09 A Mn-54 pCi/L 168 172 0.98 A Zn-65 pCi/L 195 204 0.96 A E11847 Charcoal I-131 pCi 87.9 84.8 1.04 A E11845 AP Sr-89 pCi 70.8 79.1 0.90 A Sr-90 pCi 9.10 11.5 0.79 W E11848 AP Ce-141 pCi 112 116 0.96 A Co-58 pCi 119 119 1.00 A Co-60 pCi 171 146 1.17 A Cr-51 pCi 270 241 1.12 A Cs-134 pCi 152 144 1.05 A Cs-137 pCi 114 115 0.99 A Fe-59 pCi 94.1 88.3 1.07 A Mn-54 pCi 139 132 1.06 A Zn-65 pCi 141 156 0.90 A E11849 Water Fe-55 pCi/L 1840 1890 0.97 A July 2017 E11901 AP GR-A pCi 50.1 44.2 1.13 A GR-B pCi 218 233 0.93 A (a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 46

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 8.1 Sample Type: Interlaboratory Comparison Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Ratio of TBE to Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value (a) Analytics Result Value September 2017 E11914 Milk Sr-89 pCi/L 84.3 82.7 1.02 A Sr-90 pCi/L 12.6 12.1 1.04 A E11915 Milk Ce-141 pCi/L 93.9 87.0 1.08 A Co-58 pCi/L 115 117 0.98 A Co-60 pCi/L 265 262 1.01 A Cr-51 pCi/L 273 217 1.26 W Cs-134 pCi/L 186 201 0.93 A Cs-137 pCi/L 175 172 1.02 A Fe-59 pCi/L 137 125 1.09 A I-131 pCi/L 78.0 71.0 1.10 A Mn-54 pCi/L 128 123 1.04 A Zn-65 pCi/L 206 184 1.12 A E11916 Charcoal I-131 pCi 71.9 64.4 1.12 A E11917 AP Ce-141 pCi 80.1 86.3 0.93 A Co-58 pCi 110 116 0.95 A Co-60 pCi 277 260 1.07 A Cr-51 pCi 275 215 1.28 W Cs-134 pCi 192 199 0.96 A Cs-137 pCi 165 170 0.97 A Fe-59 pCi 122 124 0.98 A Mn-54 pCi 120 122 0.99 A Zn-65 pCi 175 183 0.96 A E11918 Water Fe-55 pCi/L 1630 1630 1.00 A E11919 Soil Ce-141 pCi/g 0.136 0.142 0.96 A Co-58 pCi/g 0.179 0.191 0.94 A Co-60 pCi/g 0.405 0.429 0.94 A Cr-51 pCi/g 0.230 0.355 0.65 N (1)

Cs-134 pCi/g 0.272 0.328 0.83 A Cs-137 pCi/g 0.336 0.356 0.94 A Fe-59 pCi/g 0.210 0.205 1.02 A Mn-54 pCi/g 0.210 0.201 1.05 A Zn-65 pCi/g 0.301 0.301 1.00 A (a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 (1) See NCR 17-16 47

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 8.1 Sample Type: Interlaboratory Comparison Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Ratio of TBE to Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value (a) Analytics Result Value December 2017 E12054 Milk Sr-89 pCi/L 92.1 92.3 1.00 A Sr-90 pCi/L 18.3 16.9 1.09 A E12055 Milk Ce-141 pCi/L 97.8 98.3 0.99 A Co-58 pCi/L 92.3 89.9 1.03 A Co-60 pCi/L 176 173 1.02 A Cr-51 pCi/L 226 242 0.93 A Cs-134 pCi/L 118 125 0.95 A Cs-137 pCi/L 148 141 1.05 A Fe-59 pCi/L 123 113 1.08 A I-131 pCi/L 66.0 57.8 1.14 A Mn-54 pCi/L 173 161 1.08 A Zn-65 pCi/L 233 211 1.10 A E12056 Charcoal I-131 pCi 48.1 47.5 1.01 A E12057A AP Ce-141 pCi 108 111 0.97 A Co-58 pCi 89.5 102 0.88 A Co-60 pCi 223 196 1.14 A Cr-51 pCi 311 274 1.13 A Cs-134 pCi 141 142 1.00 A Cs-137 pCi 162 160 1.01 A Fe-59 pCi 121 129 0.94 A Mn-54 pCi 177 182 0.97 A Zn-65 pCi 203 239 0.85 A E12058 Water Fe-55 pCi/L 1970 1740 1.13 A E12059 AP Sr-89 pCi 71.2 87.4 0.81 A Sr-90 pCi 12.9 16.0 0.81 A (a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 48

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 8.1 Sample Type: Interlaboratory Comparison DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering Environmental Services TBE Identification Known Acceptance Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value (a) Range Value February 2017 17-MaS36 Soil Ni-63 Bq/kg -5.512 (1) A Sr-90 Bq/kg 571 624 437 - 811 A 17-MaW36 Water Am-241 Bq/L 0.693 0.846 0.592 - 1.100 A Ni-63 Bq/L 13.4 12.2 8.5 - 15.9 A Pu-238 Bq/L 0.7217 0.703 0.492 - 0.914 A Pu-239/240 Bq/L 0.9277 0.934 0.654 - 1.214 A 17-RdF36 AP U-234/233 Bq/sample 0.0911 0.104 0.073 - 0.135 A U-238 Bq/sample 0.0967 0.107 0.075 - 0.139 A 17-RdV36 Vegetation Cs-134 Bq/sample 6.44 6.95 4.87 - 9.04 A Cs-137 Bq/sample 4.61 4.60 3.22 - 5.98 A Co-57 Bq/sample -0.0229 (1) A Co-60 Bq/sample 8.52 8.75 6.13 - 11.38 A Mn-54 Bq/sample 3.30 3.28 2.30 - 4.26 A Sr-90 Bq/sample 1.30 1.75 1.23 - 2.28 W Zn-65 Bq/sample 5.45 5.39 3.77 - 7.01 A August 2017 17-MaS37 Soil Ni-63 Bq/kg 1130 1220 854 - 1586 A Sr-90 Bq/kg 296 289 202 - 376 A 17-MaW37 Water Am-241 Bq/L 0.838 0.892 0.624 - 1.160 A Ni-63 Bq/L -0.096 (1) A Pu-238 Bq/L 0.572 0.603 0.422 - 0.784 A Pu-239/240 Bq/L 0.863 0.781 0.547 - 1.015 A 17-RdF37 AP U-234/233 Bq/sample 0.103 0.084 0.059 - 0.109 W U-238 Bq/sample 0.115 0.087 0.061 - 0.113 N (2) 17-RdV37 Vegetation Cs-134 Bq/sample 2.34 2.32 1.62 - 3.02 A Cs-137 Bq/sample 0.05 (1) A Co-57 Bq/sample 3.32 2.8 2.0 - 3.6 A Co-60 Bq/sample 2.09 2.07 1.45 - 2.69 A Mn-54 Bq/sample 2.90 2.62 1.83 - 3.41 A Sr-90 Bq/sample 1.17 1.23 0.86 - 1.60 A Zn-65 Bq/sample 6.07 5.37 3.76 - 6.98 A (a) The MAPEP known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) DOE/MAPEP evaluation:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 (1) False positive test (2) See NCR 17-15 49

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 8.1 Sample Type: Interlaboratory Comparison ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identrification Known Acceptance Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value (a) Limits Value March 2017 MRAD-26 AP GR-A pCi/sample 76.3 85.5 28.6 - 133 A April 2017 RAD-109 Water Ba-133 pCi/L 49.2 49.7 40.8 - 55.1 A Cs-134 pCi/L 83.2 90.1 74.0 - 99.1 A Cs-137 pCi/L 202 206 185 - 228 A Co-60 pCi/L 51.2 54.7 49.2 - 62.7 A Zn-65 pCi/L 39.3 53.8 47.2 - 65.9 N (1)

GR-A pCi/L 53.6 75.0 39.5 - 92.3 A GR-B pCi/L 42.7 38.5 25.5 - 46.0 A U-Nat pCi/L 50.1 55.6 45.2 - 61.7 A H-3 pCi/L 7080 6850 5920 - 7540 A Sr-89 pCi/L 40.7 66.2 53.8 - 74.3 N (1)

Sr-90 pCi/L 26.9 26.7 19.3 - 31.1 A I-131 pCi/L 26.7 29.9 24.9 - 34.9 A September 2017 MRAD-27 AP GR-A pCi/sample 40.9 50.1 16.8 - 77.8 A AP GR-B pCi/sample 58.0 61.8 39.1 - 90.1 A October 2017 RAD-111 Water Ba-133 pCi/L 71.3 73.7 61.7 - 81.1 A Cs-134 pCi/L 43.0 53.0 42.8 - 58.3 A Cs-137 pCi/L 48.2 52.9 47.6 - 61.1 A Co-60 pCi/L 69.0 69.5 62.6 - 78.9 A Zn-65 pCi/L 335 348 313 - 406 A GR-A pCi/L 32.5 35.6 18.3 - 45.8 A GR-B pCi/L 24.3 25.6 16.0 - 33.6 A U-Nat pCi/L 36.6 37.0 30.0 - 40.9 A H-3 pCi/L 6270 6250 5390 - 6880 A I-131 pCi/L 26.4 24.2 20.1 - 28.7 A November 2017 111317O Water Sr-89 pCi/L 57.1 50.0 39.4 - 57.5 A Sr-90 pCi/L 27.1 41.8 30.8 - 48.0 N (2)

(a) The ERA known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.

(b) ERA evaluation:

A = Acceptable - Reported value falls within the Acceptance Limits N = Not Acceptable - Reported value falls outside of the Acceptance Limits (1) See NCR 17-09 (2) See NCR 17-19 50

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 8.1 Sample Type: Interlaboratory Comparison Summary of Results - Inter-laboratory Comparison Program (ICP)

The TBE Laboratory analyzed Performance Evaluation (PE) samples of air particulate, air iodine, milk, soil, vegetation, and water matrices for various analytes. The PE samples supplied by Analytics Inc., Environmental Resource Associates (ERA) and Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP), were evaluated against the following pre-set acceptance criteria:

A. Analytics Evaluation Criteria Analytics evaluation report provides a ratio of TBEs result and Analytics known value. Since flag values are not assigned by Analytics, TBE evaluates the reported ratios based on internal QC requirements based on the DOE MAPEP criteria.

B. ERA Evaluation Criteria ERAs evaluation report provides an acceptance range for control and warning limits with associated flag values. ERAs acceptance limits are established per the USEPA, National Environmental Laboratory Accreditation Conference (NELAC), state-specific Performance Testing (PT) program requirements or ERAs SOP for the Generation of Performance Acceptance Limits, as applicable. The acceptance limits are either determined by a regression equation specific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.

C.DOE Evaluation Criteria MAPEPs evaluation report provides an acceptance range with associated flag values. MAPEP defines three levels of performance:

Acceptable (flag = A) - result within +/- 20% of the reference value Acceptable with Warning (flag = W) - result falls in the +/- 20% to +/- 30% of the reference value Not Acceptable (flag = N) - bias is greater than 30% of the reference value Note: The Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP) samples are created to mimic conditions found at DOE sites which do not resemble typical environmental samples obtained at commercial nuclear power facilities.

51

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Table 8.1 Sample Type: Interlaboratory Comparison For the TBE laboratory, 168 out of 173 analyses performed met the specified acceptance criteria. Five analyses did not meet the specified acceptance criteria for the following reasons and were addressed through the TBE Corrective Action Program

1. The ERA April 2017 two nuclides in water were evaluated as Not Acceptable.

(NCR 17-09)

a. The Zn-65 result of 39.3 pCi/L, exceeded the lower acceptance limit of 47.2. The known value was unusually low for this study. The sample was run in duplicate on two different detectors. The results of each were 39.3 +/- 18.2 pCi/L (46% error and lower efficiency) and 59.3 +/- 8.23 pCi/L (13.9% error and higher efficiency). The result from the 2nd detector would have been well within the acceptable range (47.2 - 65.9) and 110.2% of the known value of 53.8 pCi/L.

b. The Sr-89 result of 40.7 pCi/L exceeded the lower acceptance limit of 53.8. All associated QC and recoveries were reviewed and no apparent cause could be determined for the failure. The prior three cross-check results were from 99 - 115%

of the known values and the one that followed this sample (November, 2017) was 114% of the known value.

2. The DOE MAPEP August 2017 air particulate U-238 result of 0.115 +/- 0.025 Bq/sample was higher than the known value of 0.087 +/- 0.002 with a ratio of 1.32, therefore the upper ratio of 1.30 (acceptable with warning) was exceeded. TBEs result with error easily overlaps with the acceptable range. MAPEP does not evaluate results with any associated error. Also, the spike level for this sample was very low (2.35 pCi) compared to TBEs normal LCS of 6 pCi. TBE considers this result as passing. (NCR 17-15)

3. The Analytics September 2017 soil Cr-51 result was evaluated as Not Acceptable (Ratio of TBE to known result at 0.65). The reported value was 0.230 +/- 0.144 pCi/g and the known value was 0.355 +/- 0.00592 pCi/g. The sample was counted overnight for 14 hours1.62037e-4 days <br />0.00389 hours <br />2.314815e-5 weeks <br />5.327e-6 months <br />,however the Cr-51 was spiked at a very low level and had a counting error of 65%.

Cr-51 has a 27-day half-life, making low-level quantification even more difficult. The error does not appear to have been taken into consideration for this result. If it had been evaluated with the error, the highest result would have been 105% of the reference value, which is acceptable. Also, the known value is significantly lower than TBEs typical MDC for this nuclide in a soil matrix and would typically not be reported to clients (unless specified). The results of all of the previous cross-checks have been in the acceptable (80

- 120%) range. TBE will evaluate further upon completion of the next ICP sample. (NCR 17-16)

4. The ERA November 2017 water Sr-90 sample was evaluated as Not Acceptable. TBEs result of 27.1 pCi/L exceeded the lower acceptance range (30.8 - 48.0 pCi/L). After reviewing the associated QC data for this sample, it was determined that although the spike recovery for Sr-90 was within our laboratory guidelines (70% -130%), both the spike result and our ERA result were biased low. The original cross-check sample was completely consumed and we were unable to reanalyze before submitting the result.

We have modified our preparation process to avoid this situation for future cross-check samples. We also have enhanced LIMS programming to force a LCSD when a LCSD when a workgroup includes cross-check samples (as opposed to running a DUP). (NCR 17-19)

The Inter-Laboratory Comparison Program provides evidence of in control counting systems and methods, and that the laboratories are producing accurate and reliable data.

52

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station ATTACHMENT 2 Statistical Comparisons 53

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE OF CONTENTS TABLE 2.1 STATISTICAL COMPARISON OF 2017 TLD MEASUREMENTS FROM STATIONS GROUPED BY DISTANCE 57 TABLE 2.2 STATISTICAL COMPARISON OF 2017 TLD RADIATION DOSE TO HISTORICAL DATA BY LOCATION 58 TABLE 2.3 STATISTICAL COMPARISON OF 2017 GROSS BETA ACTIVITY MEASUREMENTS ON AIR PARTICULATE FILTERS 59 TABLE 2.4 STATISTICAL COMPARISON OF 2017 GROSS BETA ACTIVITY MEASUREMENTS IN DRINKING/SURFACE WATER SAMPLES 60 54

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station Statistical Analyses

¨ Calculation of the Mean and Standard Deviation The mean and standard deviation for different groups of analyses are calculated using the following equations:

n X = Xi i=1 n and 0.5 n 2

ç ( Xi - X ) ÷ S = ç i=1 ÷

ç (n - 1) ÷

ç ÷

ø where:

X = mean of sample population, S = standard deviation of sample population, n = number of samples in sample population, and Xi = value of the i'th sample.

55

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station

¨ Comparing Two Sample Population Means The means of two sample populations are compared for statistical difference using the standard "t" test. The use of the test requires the assumption that the data within the populations are normally distributed and that the true standard deviations of the mean are equal for both populations. The standard "t" test tests the hypothesis that the true means of both populations are equal. The "t" value can be calculated from the equation below (obtained from the CRC Standard Mathematical Tables, 26th Edition (1981)):

X -Y t=

( - 1) 2 +

ç nx ( )

s x n y - 1 s y ÷ 2 0.5 1

ç +

1 ÷ 0.5

çç ÷÷ nx + n y - 2 ø

çn n ÷ x yø where:

t = calculated "t" value, X = mean of first data set, Y = mean of second data set, hx = number of variables in first data set, Sx = standard deviation of first data set, hy = number of variables in second data set, and Sy = standard deviation of second data set.

The calculated "t" value is used to test the hypothesis that the true mean of the first population (m x) is equal to the true mean of the second population (m y) assuming that the true standard deviation of both populations are equal (m x = m y). The calculated "t" value is compared to a tabular "t" value such that:

a if t > t µ,n then reject the hypothesis when m x > m y,

b. if t < -t µ,n then reject the hypothesis when m x < m y,

c. if t > t µ/2,n then reject the hypothesis when m x = m y, where t µ/2,n and t µ,n are the tabular "t" values, with a preselected error (5%), confidence level (1 -

µ) or (1- µ/2), and degrees of freedom n = nx + ny - 2. Tabular values of the "t" were obtained from the CRC Standard Mathematical Tables, 26th Edition (1981).

56

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE 2.1 STATISTICAL COMPARISON OF 2017 TLD MEASUREMENTS FROM STATIONS GROUPED BY DISTANCE Stations Located 0-2 Stations Located 2-5 Stations Located more than Miles from the Plant Miles from the Plant 5 Miles from the Plant Mean 11 12 11 (mRem/std.qtr.)

Standard Deviation 1.31 1.19 1.59 (mRem/std. qtr.)

Number in Sample 64 28 28 Calculated t Value 1.06 2.90 NA*

(comparison of stations 0-2 and 2-5 miles from the plant to stations >5 miles from the plant)

Tabular t Value at 1.990(a) 2.006(b) NA*

95% Confidence(t0.025,n)

(a) Results indicate the mean for stations located 0-2 miles from the plant are statistically identical to the mean for stations located more than 5 miles from the plant.

(b) Although the TLD stations located 2-5 miles from the plant are statistically higher than those located more than 5 miles from the plant, the quarterly doses measured in 2017 are consistent with historical data at each location as shown in Table 2.2.

• Not Applicable 57

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE 2.2 STATISTICAL COMPARISON OF 2017 TLD RADIATION DOSE TO HISTORICAL DATA BY LOCATION Units: mrem/Std. Qtr.

1990 - 2016 2017 Station 1990 - 2016 Avg** 1990 - 2016 Std. Dev.** Range** 2017 Avg** 2017 Std Dev** Range**

A-2 13 1.3 10 18 12 0.7 11 13 A-5 13 1.3 10 17 12 0.3 12 13 B-1 13 1.3 10 19 13 0.6 12 13 B-4 13 1.1 11 17 13 0.2 13 13 C-1 9 1.2 7 13 9 0.2 9 9 D-2 12 1.8 8 19 12 0.2 12 12 D-5 12 1.3 9 18 11 0.2 11 11 E-1 11 1.1 9 16 11 0.1 11 11 E-5 12 1.6 9 17 12 0.3 12 12 E-15 11 1.5 8 16 10 0.3 10 11 E-26/30* 10 1.5 8 17 9 0.3 9 9 F-2 12 1.1 10 17 12 0.2 11 12 F-4 14 1.4 11 19 14 0.1 14 14 F-9 12 1.3 7 17 11 0.4 11 12 G-2 14 2.0 10 19 10 0.4 9 10 G-4 11 1.2 9 16 11 0.3 10 11 G-8 12 1.8 8 19 10 0.4 9 10 H-2 13 1.4 10 18 10 0.3 10 11 H-8 12 1.2 9 17 13 2.1 10 16 J-2 12 1.5 10 17 10 0.3 9 10 J-15 13 1.2 11 17 11 0.8 10 12 K-1 11 1.2 9 16 10 0.3 10 11 L-1 13 1.3 10 16 13 0.2 12 13 M-1 12 1.5 9 18 10 0.3 9 10 N-1 13 1.5 8 18 10 0.3 9 10 P-1 10 1.2 7 15 9 0.1 9 9 P-6 13 1.3 10 19 13 0.3 13 13 Q-1 12 1.1 10 16 12 0.3 11 12 Q-5 13 2.0 9 18 12 1.7 9 14 R-1 10 1.8 6 15 9 0.4 8 9 R-6 12 2.3 8 18 9 0.4 9 10

• Control Location

• • Significant outliers were removed from data sets.

PERS data indicates an average of 20 mrem for all indicator locations with a range of 11 to 33 and an average control of 18 mrem.

58

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE 2.3 STATISTICAL COMPARISON OF 2017 GROSS BETA ACTIVITY MEASUREMENTS ON AIR PARTICULATE FILTERS SAMPLE STATION APF-1 APQ-1 APP-1 APC-1 APE-26/30 Mean 19 17 17 17 19 (10-3pCi/m3)

Standard Deviation 5.56 5.58 5.50 5.36 5.45 (10-3pCi/m3)

Number in Sample 27 27 26 26 26 6

Calculated t Value 0.17 1.29 1.36 1.39 NA*

(comparison of the indicator stations to the control station)

Tabular t Value at 2.009(a) 2.009(a) 2.011(a) 2.011(a) NA*

95% Confidence(t0.025,n)

(a) Results indicate the mean for the indicator stations is statistically identical to the mean for the control station.

• Not Applicable 59

Annual Radiological 2017 Environmental Operating Report Waterford 3 Steam Electric Station TABLE 2.4 STATISTICAL COMPARISON OF 2017 GROSS BETA ACTIVITY MEASUREMENTS IN DRINKING/SURFACE WATER SAMPLES DWF/SWF-2 DWE/SWE-5 DWP/SWP-7 Mean 5.4 4.2 4.7 (pCi/liter)

Standard Deviation 2.02 0.76 1.44 (pCi/liter)

Number in Sample 4 4 4 Calculated t Value 0.58 0.60 NA*

(comparison of the indicator stations to the control station)

Tabular t Value at 2.447(a) 2.447(a) NA*

95% Confidence(t0.025,n)

(a) Results indicate the mean for the indicator station is statistically identical to the mean for the control station.

• Not Applicable 60