Text

Annual Radiological Environmental Operating Report - 2017
	ML18130A644
Person / Time
Site:	Brunswick
Issue date:	05/10/2018
From:	Wooten B; Duke Energy Progress
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	BSEP 18-0052
	Download: ML18130A644 (242)
	v • d • e

( ., DUKE Brunswick Nuclear Plant P.O. Box 10429 ENERGY$ Southport, NC 28461 May 10, 2018 Serial: BSEP 18-0052 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

Brunswick Steam Electric Plant, Unit Nos. 1 and 2 Renewed Facility Operating License Nos. DPR-71 and DPR-62 Docket Nos. 50-325 and 50-324 Annual Radiological Environmental Operating Report - 2017 Ladies and Gentlemen:

In accordance with Technical Specification (TS) 5.6.2 for the Brunswick Steam Electric Plant (BSEP), Unit Nos. 1 and 2, Duke Energy Progress, LLC, is submitting the enclosed Radiological Environmental Operating Report for 2017.

No regulatory commitments are contained in this submittal. Please refer any questions 4-/} / /}

regarding this submittal to Mr. Lee Grzeck, Manager - Regulatory Affairs, at (910) 832-2487.

.~ #l'f~1 ~ c;:L t>~

Sincerely, ~~

'S/tfJ!~ I~

Bryan B. Wooten Director - Organizational Effectiveness Brunswick Steam Electric Plant MAT/mat

Enclosure:

Annual Radiological Environmental Operating Report - 2017

U.S. Nuclear Regulatory Commission Page 2 of 2 cc (with Enclosure):

U.S. Nuclear Regulatory Commission, Region II ATTN: Ms. Catherine Haney, Regional Administrator 245 Peachtree Center Ave, NE, Suite 1200 Atlanta, GA 30303-1257 U.S. Nuclear Regulatory Commission ATTN: Mr. Gale Smith, NRC Senior Resident Inspector 8470 River Road Southport, NC 28461-8869 U.S. Nuclear Regulatory Commission ATTN: Mr. Andrew Hon (Mail Stop OWFN 8G9A) 11555 Rockville Pike Rockville, MD 20852-2738 Chair - North Carolina Utilities Commission (Electronic Copy Only) 4325 Mail Service Center Raleigh, NC 27699-4300 swatson@ncuc.net Mr. W. Lee Cox, III, Section Chief (Electronic Copy Only)

Radiation Protection Section North Carolina Department of Health and Human Services 1645 Mail Service Center Raleigh, NC 27699-1645 lee.cox@dhhs.nc.gov Mr. Patrick D. Cox (Electronic Copy Only)

Environmental Program North Carolina Department of Health and Human Services 1645 Mail Service Center Raleigh, NC 27699 patrick.cox@dhhs.nc.gov

BSEP 18-0052 Enclosure Annual Radiological Environmental Operating Report - 2017

ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT DUKE ENERGY PROGRESS, LLC BRUNSWICK STEAM ELECTRIC PLANT 2017

TABLE OF CONTENTS 1.0 Executive Summary . . . . . . . . . . . . 1-1 2.0 Introduction . . . . . . . . . . . . . 2-1 2.1 Site Description and Sample Locations . . . . . . . 2-1 2.2 Scope and Requirements of the REMP . . . . . . . 2-2 2.3 Statistical and Calculational Methodology . . . . . . . 2-3 2.3.1 Estimation of the Mean Value . . . . . . . . 2-3 2.3.2 Lower Limit of Detection and Minimum Detectable Activity . . 2-3 2.3.3 Trend Identification . . . . . . . . . . 2-4 3.0 Interpretation of Results . . . . . . . . . . . 3-1 3.1 Airborne Radioiodine and Particulates . . . . . . . 3-1 3.2 Surface Water . . . . . . . . . . . . 3-4 3.3 Ground Water . . . . . . . . . . . . 3-6 3.4 Milk/Broadleaf Vegetation. . . . . . . . . . 3-7 3.5 Fish and Invertebrates . . . . . . . . . . 3-9 3.6 Shoreline Sediment . . . . . . . . . . . 3-9 3.7 Direct Gamma Radiation . . . . . . . . . . 3-11 3.7.1 Environmental TLD . . . . . . . . . 3-11 3.8 Land Use Census . . . . . . . . . . . 3-15 3.8.1 Purpose of Land Use Census. . . . . . . . 3-15 3.8.2 Methodology. . . . . . . . . . . 3-15 3.8.3 Land Use Census Results . . . . . . . . 3-16 4.0 Quality Assurance . . . . . . . . . . . . 4-1 4.1 Sample Collection . . . . . . . . . . 4-1 4.2 Sample Analysis . . . . . . . . . . . 4-1 4.3 Dosimetry Analysis . . . . . . . . . . . 4-1 4.4 Laboratory Equipment Quality Assurance . . . . . . . 4-1 4.4.1 Daily Quality Control . . . . . . . . . 4-1 4.4.2 Calibration Verification . . . . . . . . . 4-1 4.4.3 Batch Processing . . . . . . . . . . 4-2 4.5 Duke Energy Interlaboratory Comparison Program . . . . . 4-2 4.5.1 Duke Energy Interlaboratory Program . . . . . . 4-2 4.5.2 Eckert & Ziegler Analytics Cross Check Program . . . . 4-2 4.5.3 ERA Proficiency Testing . . . . . . . . . 4-3 4.6 State of North Carolina Intercomparison Program . . . . . 4-3 4.7 TLD Intercomparison Program . . . . . . . . . 4-3 4.7.1 Nuclear Technology Services Intercomparison Program . . . 4-3 4.7.2 Internal Crosscheck (Duke Energy). . . . . . . . 4-4 4.8 General Engineering Laboratory, LLC (GEL) . . . . . . 4-4 APPENDICES Appendix A: Environmental Sampling and Analysis Procedures . . . . A-1 I. Change of Sampling Procedures . . . . . . . . A-2 II. Description of Analysis Procedures . . . . . . . . A-3 III. Change of Analysis Procedures . . . . . . . . . A-3 IV. Sampling and Analysis Procedures . . . . . . . . A-3 A.1 Airborne Particulate and Radioiodine . . . . . . A-3 A.2 Surface Water . . . . . . . . . . A-4 A.3 Ground Water . . . . . . . . . . . A-5 i

Appendix A Continued:

A.4 Broadleaf Vegetation . . . . . . . . . A-5 A.5 Fish and Invertebrates. . . . . . . . . . A-6 A.6 Shoreline Sediment . . . . . . . . . . A-6 A.7 Direct Gamma Radiation (TLD) . . . . . . . A-7 A.8 Annual Land Use Census . . . . . . . . A-7 Appendix B: Radiological Environmental Monitoring Program - Summary of Results B-1 Radiological Environmental Monitoring Program Data Summary. . . B-2 Footnotes to Appendix B. . . . . . . . . . . B-4 Appendix C: Sampling Deviations & Unavailable Analyses . . . . . C-1 C.1 Sampling Deviations . . . . . . . . C-2 C.2 Unavailable Analyses . . . . . . . . . C-3 Appendix D: Analytical Deviations . . . . . . . . . . D-1 Brunswick Nuclear Plant Analytical Deviations . . . . . . D-2 Appendix E: Radiological Environmental Monitoring Program Results 2017. . . E-1 Appendix F: Errata to Previous Reports . . . . . . . . . F-1 Errata to the 2017 BSEP AREOR . . . . . . . . F-2 LIST OF FIGURES 2.1-1 BSEP Environmental Sample Locations - One mile radius. . . . . 2-5 2.1-2 BSEP Environmental Sample Locations (Ground Water Only) - One mile radius.2-6 2.1-3 BSEP Environmental Sample Locations - Ten mile radius. . . . . 2-7 2.1-4 BSEP Radiological Environmental Sampling Locations (ISFSI TLDs). . 2-8 2.1-5 Radiological Environmental Sampling Locations. . . . . . 2-9 2.1-6 Radiological Environmental Sampling Locations (Continued) . 2-10 2.1-7 Radiological Environmental Sampling Locations (Continued) . 2-11 2.1-8 Radiological Environmental Sampling Locations (Continued) . 2-12 2.1-9 Radiological Environmental Sampling Locations (Continued) . 2-13 2.1-10 Radiological Environmental Sampling Locations (Continued) . 2-14 2.1-11 Radiological Environmental Sampling Locations (Continued). . . . 2-15 2.1-12 Radiological Environmental Sampling Locations - Wells . 2-16 2.1-13 Radiological Environmental Sampling Locations - Wells (Continued) . 2-17 2.1-14 Radiological Environmental Sampling Locations - Wells (Continued) . 2-18 2.1-15 Radiological Environmental Sampling Locations - Wells (Continued) . 2-19 3.1 Concentration of Gross Beta in Air Particulate . . . . . . 3-2 3.2 Concentration of Tritium in Surface Water . . . . . . . 3-5 3.4 Concentration of Cs-137 in Broadleaf Vegetation . . . . . 3-8 3.6 Concentration of Cs-137 in Shoreline Sediment. . . . . . . 3-10 3.7 Direct Gamma Radiation (TLD) Results . . . . . . . 3-12 3.8-1 Brunswick Nuclear Plant 2017 Land Use Census Map . . . . 3-19 LIST OF TABLES 2.1-A Radiological Monitoring Program Sampling Locations (ODCM Rev. 37). . 2-20 2.1-B Radiological Monitoring Program Sampling Locations (ODCM Rev. 38). . 2-22 2.1-C Radiological Monitoring Program Sampling Locations (TLD Sites) . . 2-24 2.2-A Reporting Levels for Radioactivity Concentrations in Environmental Samples 2-25 2.2-B REMP Analysis Frequency (ODCM Rev. 37). . . . . . . 2-25 2.2-C REMP Analysis Frequency (ODCM Rev. 38). . . . . . . 2-26 2.2-D Detection Capabilities for the A PRIORI Lower Limit of Detection . . 2-26 3.1-1 Mean Concentration of Gross Beta in Air Particulate . . . . . 3-3 3.1-2 Mean Concentration of Air Radioiodine (I-131) . . . . . . 3-3 ii

LIST OF TABLES CONTINUED 3.2 Mean Concentration of Tritium in Surface Water . . . . . 3-5 3.3 Mean Concentration of Tritium in Ground Water . . . . . 3-7 3.4 Mean Concentration of Radionuclides in Broadleaf Vegetation (pCi/kg) . 3-8 3.6 Mean Concentration of Radionuclides in Shoreline Sediment . . . 3-10 3.7-1 Direct Gamma Radiation (TLD) Results . . . . . . . 3-13 3.7-2 ISFSI TLD Dose. . . . . . . . . . . . 3-13 3.7-3 Historical TLD Results (1972 - 2017). . . . . . . . 3-14 3.8-A Land Use Census Comparison (2016 - 2017). . . . . . . 3-17 3.8-B Garden Census - 2017 . . . . . . . . . . 3-18 4.0-A Eckert & Ziegler Analytics Cross Check Program - EnRad . . . . 4-5 4.0-B 2017 Environmental Dosimeter Cross-Check Results Nuclear Technology Services . . . . . . . . . 4-8 Internal Crosscheck (Duke Energy). . . . . . . . . 4-9 4.0-C 2017 Annual Quality Assurance Report for GEL Laboratory . . . 4-10 4.0-D Eckert & Ziegler Analytics Cross Check Program - BSEP . . . . 4-11 LIST OF ACRONYMS USED IN THIS TEXT (in alphabetical order)

A Annually ADM Archer Daniels Midland Chemical Company AP Air Particulate AR Air Radioiodine = Air Cartridge AREOR Annual Radiological Environmental Operating Report BO Benthic Organisms BSEP Brunswick Steam Electric Plant C Control CR Condition Report - Corrective Action Program ERA Environmental Resource Associates EZA Eckert & Ziegler Analytics, Inc.

FSS Fleet Scientific Services GEL General Engineering Laboratories, LLC.

GPS Global Positioning System GW Ground water I Indicator IR Inner Ring - TLDs ISFSI Independent Spent Fuel Storage Installation LLD Lower Limit of Detection M Monthly MDA Minimum Detectable Activity mrem Millirem MSL Mean sea level MW megawatts NIST National Institute of Standards and Technology NRC Nuclear Regulatory Commission OD Ocean discharge ODCM Offsite Dose Calculation Manual OR Outer Ring - TLDs pCi/kg picocurie per kilogram pCi/l picocurie per liter pCi/m3 picocurie per cubic meter PMAC Projected Maximum Annual Concentration Q Quarterly REMP Radiological Environmental Monitoring Program SA Semiannually SDSP Storm Drain Stabilization Pond SH Shellfish SI Special Interest - TLDs SW Surface Water TLD Thermoluminescent Dosimeter W Weekly iii

1.0 EXECUTIVE

SUMMARY

The Brunswick Steam Electric Plant (BSEP), Unit Nos. 1 and 2, is operated by Duke Energy Progress, LLC under licenses granted by the Nuclear Regulatory Commission (NRC).

Provisions of the Nuclear Regulatory Commissions Regulatory Guide 4.8, BSEP Plant Technical Specifications 5.6.2, and the BSEP Offsite Dose Calculation Manual (ODCM) establish the requirements of the Radiological Environmental Monitoring Program (REMP).

This report describes the BSEP REMP and the program results for January 1, 2017, through December 31, 2017.

Included in the report are the identification of sampling locations, descriptions of environmental sampling and analysis procedures, comparisons of present environmental radioactivity levels and pre-operational environmental data, analysis of trends in environmental radiological data as potentially affected by plant operations, and a summary of environmental radiological sampling results. Quality assurance practices, sampling deviations, unavailable samples, and program changes are also discussed.

Sampling activities were conducted as prescribed by the BSEP ODCM. Required analyses were performed and detection capabilities were met for the collected samples required by the ODCM other than that stated in Appendix D - Analytical Deviations (NCR # 02128415).

One thousand seven hundred sixty-six samples were analyzed comprising 1,766 test results in order to compile data for the 2017 BSEP Annual Radiological Environmental Operating Report (AREOR). Based on the annual BSEP land use census, the current number of sampling sites for BSEP is sufficient.

Concentrations observed in the environment in 2017 for plant related radionuclides were within the ranges of concentrations observed in the past. Inspection of the data showed that radioactivity concentrations were as expected and positively identified measurements attributable to plant operation were within limits as specified in the BSEP ODCM.

The continued operation of BSEP has not significantly contributed measurable radiation or the presence of gamma radioactivity, in the environmental media monitored. The measured concentrations of radioactivity and radiation are well within the applicable regulatory limits.

Section 1 - Page 1

2.0 INTRODUCTION

2.1 SITE DESCRIPTION AND SAMPLE LOCATIONS Duke Energy's Brunswick Steam Electric Plant (BSEP) consists of two boiling water reactors with a design rating of 2923 megawatts (MWe) thermal. Commercial production was initiated by Unit 2 on November 3, 1975 and by Unit 1 on March 18, 1977. BSEP is located in Brunswick County, North Carolina. The site is along state route 87 approximately two and a half miles north of Southport, North Carolina. The community of Boiling Spring Lakes is about three miles northwest of the site. The towns of Caswell Beach and Oak Island are on a barrier island south of the plant. The site is also approximately 16 miles south of Wilmington, North Carolina.

The Cape Fear River is east of the plant and cooling water is drawn from the river through a canal. The cooling water and plant liquid effluents are both discharged to the Atlantic Ocean through a canal, pumping station, and piping. The discharge point is south of the town of Caswell Beach.

The plant site varies in elevation from sea level to 30 feet above mean sea level (MSL). It is surrounded by extensive marshes. The lower Cape Fear River is an important nursery area for shellfish and other marine species.

The local economy supports significant recreational, industrial, agricultural, and government contributions. There is well-developed recreational use of the barrier islands south and east of the site. Fishing and boating are popular activities. Commercial fishing is also an important industry in the community. Agriculture utilizes some of the land within 50 miles of the site; such as small truck farms, cattle, poultry, and row crops including corn, soybeans and tobacco.

Industrial activity includes the Archer Daniels Midland (ADM) Company, a manufacturer of citric acid, located one and a half miles southeast of the plant. In conjunction with the citric acid plant is a small electrical generating station operated by Capital Power, Inc. This solid fuels-fired cogeneration facility (wood residuals, tire-derived fuel, and coal) burns alternate fuels with a rated capacity at 88 MW and provides steam to the nearby Archer Daniels Midland Company.

Although the contribution to background radiation is small, Duke Energy Progress, LLC has established the Radiological Environmental Monitoring Program (REMP) to measure the exposure pathways to man. An exposure pathway describes the source of the radiological exposure. The primary forms of radiological emissions from the plant are airborne and liquid discharge. The following pathways are monitored: external dose, ingestion of radioactive materials, and the inhalation of radioactive material. Specific methods and different environmental media are required to assess each pathway.

Sampling locations are chosen based upon meteorological factors, preoperational monitoring, and results of the land use surveys. A number of locations are selected as controls. Control stations are selected because they are very unlikely to be affected by the operation of the plant.

Section 2 - Page 1

Figures 2.1-1 through 2.1-15 are maps depicting the BSEP sampling locations and the BSEP Thermoluminescent Dosimeter (TLD) monitoring locations. The location numbers shown on these maps correspond to those listed in Tables 2.1-A, 2.1-B, and 2.1-C.

2.2 SCOPE AND REQUIREMENTS OF THE REMP The Radiological Environmental Monitoring Program (REMP) was established in 1973 at the Brunswick Steam Electric Plant (BSEP). Radiation and radioactivity in various environmental media have been monitored for 43 years, including monitoring in excess of a year prior to commencing operation. Monitoring is also provided for control locations, which would not be impacted by operations of BSEP. Using the data from the control locations and the historical data collected prior to operation allows comparison of data collected at locations near the BSEP which could potentially be impacted by its operations.

This monitoring program is based on NRC guidance as reflected in the BSEP Offsite Dose Calculation Manual (ODCM), with regards to sample media, sampling locations, sampling frequency and analytical sensitivity requirements. Indicator and control locations were established for comparison purposes to distinguish radioactivity of plant origin from natural or other man-made environmental radioactivity. The environmental monitoring program also verifies projected and anticipated radionuclide concentrations in the environment and related exposures from releases of radionuclides from BSEP. This program satisfies the requirements of Section IV.B.2 of Appendix I to 10 CFR 50 and provides surveillance of all appropriate critical exposure pathways to man and protects vital interests of the company, public and state and federal agencies concerned with the environment. Reporting levels for activity found in environmental samples are listed in Table 2.2-A. Tables 2.2-B and 2.2-C list the REMP analysis and frequency schedule.

The Annual Land Use Census, required by the BSEP ODCM, is performed to ensure that changes in the use of areas at or beyond the site boundary are identified and that modifications to the REMP are made if required by changes in the land use. This census satisfies the requirements of Section IV.B.3 of Appendix I to 10 CFR 50. Results are shown in Table 3.8-A and 3.8-B.

Participation in an interlaboratory comparison program is performed in fulfillment of BSEP ODCM Operational Requirement provides for independent checks on the precision and accuracy of measurements of radioactive material in REMP sample matrices. Such checks are performed as part of the quality assurance program for environmental monitoring in order to demonstrate that the results are valid for the purposes of Section IV.B.2 of Appendix I to 10 CFR 50. A summary of the results obtained as part of this comparison program are in Section 4 of this annual report.

Section 2 - Page 2

2.3 STATISTICAL AND CALCULATIONAL METHODOLOGY 2.3.1 ESTIMATION OF THE MEAN VALUE There was one (1) basic statistical calculation performed on the raw data resulting from the environmental sample analysis program. The calculation involved the determination of the mean value for the indicator and the control samples for each sample medium. The mean is a widely used statistic. This value was used in the reduction of the data generated by the sampling and analysis of the various media in the Radiological Environmental Monitoring Program. Net activity (or concentration)" is the activity (or concentration) determined to be present in the sample. No "Minimum Detectable Activity", "Lower Limit of Detection", "Less Than Level", or negative activities or concentrations are included in the calculation of the mean. The following equation was used to estimate the mean (reference 6.8):

N x i x = i =1 N

Where:

x = estimate of the mean, i = individual sample, N = total number of samples with a net activity (or concentration),

i = net activity (or concentration) for sample i.

2.3.2 LOWER LIMIT OF DETECTION AND MINIMUM DETECTABLE ACTIVITY The Lower Limit of Detection (LLD) and Minimum Detectable Activity (MDA) are used throughout the REMP.

LLD - The LLD, as defined in the Offsite Dose Calculation Manual (ODCM), is the smallest concentration of radioactive material in an unknown sample that will yield a net count, above the system background, that will be detected with 95% probability with a 5% probability of falsely concluding that a blank observation represents a "real" signal. The LLD is an a priori lower limit of detection. The actual LLD is dependent upon the standard deviation of the background counting rate, the counting efficiency, the sample size (mass or volume), the radiochemical yield and the radioactive decay of the sample between sample collection and counting. The "required" LLD's for each sample medium and selected radionuclides are given in the ODCMs and are listed in Table 2.2-D.

Section 2 - Page 3

MDA - The MDA is the net counting rate (sample after subtraction of background) that must be surpassed before a sample is considered to contain a scientifically measurable amount of a radioactive material exceeding background amounts. The MDA is calculated using a sample background and may be thought of as an "actual" LLD for a particular sample measurement. Certain gross counting measurements display a calculated negative value, indicating background is greater than sample activity.

2.3.3 TREND IDENTIFICATION One of the purposes of an environmental monitoring program is to determine if there is a buildup of radionuclides in the environment due to the operation of the nuclear station. Visual inspection of tabular or graphical presentations of data (including preoperational) is used to determine if a trend exists. A decrease in a particular radionuclide's concentration in an environmental medium does not indicate that reactor operations are removing radioactivity from the environment but that reactor operations are not adding that radionuclide to the environment in quantities exceeding the preoperational level and that the normal removal processes (radioactive decay, deposition, resuspension, etc.) are influencing the concentration.

Substantial increases or decreases in the amount of a particular radionuclide's release from the nuclear plant will greatly affect the resulting environmental levels; therefore, a knowledge of the release of a radionuclide from the nuclear plant is necessary to completely interpret the trends, or lack of trends, determined from the environmental data. Factors that may affect environmental levels of radionuclides include prevailing weather conditions (periods of drought, solar cycles or heavier than normal precipitation), construction in or around either the nuclear plant or the sampling location, and addition or deletion of other sources of radioactive materials (such as the 1986 Chernobyl accident and the 2011 Japan earthquake and tsunami, which triggered the Fukushima Dai-ichi Nuclear Power Plant incident). Some of these factors may be obvious while others are sometimes unknown. Therefore, how trends are identified will include some judgment by plant personnel.

Section 2 - Page 4

Figure 2.1-1 BSEP Environmental Sampling Locations - One mile radius Section 2 - Page 5

Figure 2.1-2 BSEP Environmental Sampling Locations (Ground Water Only) - One mile radius Section 2 - Page 6

Figure 2.1-3 BSEP Environmental Sample Locations - Ten mile radius Section 2 - Page 7

Figure 2.1-4 BSEP Radiological Environmental Sampling Locations Independent Spent Fuel Storage Installation (ISFSI) TLDs Section 2 - Page 8

Figure 2.1-5 Radiological Environmental Sampling Locations Section 2 - Page 9

Figure 2.1-6 Radiological Environmental Sampling Locations (Continued)

Section 2 - Page 10

Figure 2.1-7 Radiological Environmental Sampling Locations (Continued)

Section 2 - Page 11

Figure 2.1-8 Radiological Environmental Sampling Locations (Continued)

Section 2 - Page 12

Figure 2.1-9 Radiological Environmental Sampling Locations (Continued)

Section 2 - Page 13

Figure 2.1-10 Radiological Environmental Sampling Locations (Continued)

Section 2 - Page 14

Figure 2.1-11 Radiological Environmental Sampling Locations (Continued)

SDSP: Storm Drain Stabilization Pond Section 2 - Page 15

Figure 2.1-12 Radiological Environmental Sampling Locations - Wells Section 2 - Page 16

Figure 2.1-13 Radiological Environmental Sampling Locations - Wells (Continued)

Section 2 - Page 17

Figure 2.1-14 Radiological Environmental Sampling Locations - Wells (Continued)

Section 2 - Page 18

Figure 2.1-15 Radiological Environmental Sampling Locations - Wells (Continued)

Section 2 - Page 19

TABLE 2.1-A BRUNSWICK STEAM ELECTRIC PLANT (BSEP) ODCM Rev. 37 RADIOLOGICAL MONITORING PROGRAM SAMPLING LOCATIONS Table 2.1-A Codes W Weekly SA Semiannually M Monthly A Annually Q Quarterly C Control I Indicator Site Type Location Description* Air Surface Shoreline Fish Broadleaf Ground Radioidine Water Sediment (FI) Vegetation Water

& Air Particulate 200 I 1.0 miles WSW - Visitors Center W/Q 201 I 0.5 miles NE - Bio Lab Rd. - Projected W/Q Maximum Annual Concentration (PMAC) 202 I 1.0 mile S - Substation, Construction Rd. W/Q 203 I 2.0 miles SSW - Southport Substation W/Q 204 C 22.4 miles NNE - Sutton Plant (Historical W/Q Control) 205 I 0.6 miles SSE - Spoil Pond W/Q 206 C 11.3 miles NW - Brunswick County W/Q Complex 400 C 0.6 miles NE - Intake Canal M 401 I 4.9 miles SSW - Discharge Canal @ OD M Pumps 404 I 0.16 miles SW, Monitoring Well ESS-1B Q/SA 407 I 0.06 miles ENE, Monitoring Well ESS-13B Q/SA 409 I 0.65 miles NE, Monitoring Well ESS-17A Q/SA 410 I 0.65 miles NE, Monitoring Well ESS-17B Q/SA 418 I Monitoring Well ESS-21B, Near SDSP Q/SA 423 I Monitoring Well ESS-24A, Near SDSP Q/SA 424 I Monitoring Well ESS-24B, Near SDSP Q/SA 426 I Monitoring Well ESS-25B, Near SDSP Q/SA 429 I Monitoring Well ESS-27A, Near SDSP Q/SA 494 I Nancys Creek March Area - WP-106** W 495 I Nancys Creek - WP-52 W/M 496 I Nancys Creek - WP-53 W/M 497 I Nancys Creek - WP-55 W/M 498 I Nancys Creek - WP-57 W/M 499 C Cape Fear River - WP-61 W/M 500 I 5.0 miles SSW - Discharge - Beach near SA OD Pumps 501 I Nancys Creek, Adjacent to WP-55, Near A SDSP 604 I Nancys Creek Marsh Area - WP-92** W 605 I Nancys Creek Marsh Area - WP-72** W 606 I Nancys Creek Marsh Area - WP-74** W 607 I Nancys Creek Marsh Area - WP-76** W 608 I Nancys Creek Marsh Area - WP-82** W 609 I Nancys Creek Marsh Area - WP-84** W 610 I Nancys Creek Marsh Area - WP-88** W 612 I Monitoring Well ESS MWPA-118B, Near Q/SA Intake Canal and Plant Stack (b)(c) 700 I 5.5 miles SSW - Atlantic Ocean @ SA discharge (Free Swimmer) 701 I 5.5 miles SSW - Atlantic Ocean @ SA(b)(c) discharge (Bottom Feeders) 702 I 5.5 miles SSW - Atlantic Ocean @ SA(b)(c) discharge (Shellfish/Invertebrates) 703 C Atlantic Ocean; location not specified (Free SA(b)(c)

Swimmer) 704 C Atlantic Ocean; location not specified SA(b)(c)

(Bottom Feeder) 705 C Atlantic Ocean; location not specified SA(b)(c)

(Shellfish/Invertebrates)

Section 2 - Page 20

TABLE 2.1-A (Continued)

Site Type Location Description* Air Surface Shoreline Fish Broadleaf Ground Radioidine Water Sediment (FI) Vegetation Water

& Air Particulate 706 I Nancys Creek; location not specified (Free A(b)

Swimmer) 707 I Nancys Creek; location not specified A(b)

(Bottom Feeder) 708 I Nancys Creek; location not specified A(b)

(Shellfish/Invertebrates) 800 I 0.7 miles NE - Intake Canal M(a) 801 I 0.8 miles SW - Discharge Canal M(a) 802 C 10.1 miles - Location not Specified M(a) 803 I 0.6 miles SSE - Spoil Pond M(a) 804 I 0.7 miles S - Leonard Street plant exit M(a) adjacent to RR tracks (a) When Available (b) Edible Portions (c) When in Season

GPS data reflect approximate accuracy to within 2-5 meters. GPS field measurements were taken as close as possible to the item of interest.

SDSP: Storm Drain Stabilization Pond

- Refers to SW-494, 604 - 610 and how composited weekly as indicated below for gamma analysis and Sample ID number in Appendix E.

ODCM Sample and Description Composite Frequency/Analysis/Data ID SW-494 (Nancys Creek Marsh Area - WP-106) Composited weekly as Waypoint Comp / Gamma analysis /

SW-604 (Nancys Creek Marsh Area - WP-92) Sample ID #1067 in data section - Appendix E SW-605 (Nancys Creek Marsh Area - WP-72) Composited weekly as Waypoint Comp (70) / Gamma SW-606 (Nancys Creek Marsh Area - WP-74) analysis / Sample ID #1065 in data section - Appendix E SW-607 (Nancys Creek Marsh Area - WP-76)

SW-608 (Nancys Creek Marsh Area - WP-82) Composited weekly as Waypoint Comp (80) / Gamma SW-609 (Nancys Creek Marsh Area - WP-84) analysis / Sample ID #1066 in data section - Appendix E SW-610 (Nancys Creek Marsh Area - WP-88)

Section 2 - Page 21

TABLE 2.1-B BRUNSWICK STEAM ELECTRIC PLANT (BSEP) ODCM Rev. 38 RADIOLOGICAL MONITORING PROGRAM SAMPLING LOCATIONS Table 2.1-B Codes W Weekly SA Semiannually M Monthly A Annually Q Quarterly C Control I Indicator Site Type Location Description* Air Surface Shoreline Fish Broadleaf Ground Radioidine Water Sediment (FI) Vegetation Water

& Air Particulate 200 I 1.0 miles WSW - Visitors Center W/Q 201 I 0.5 miles NE - Bio Lab Rd. - Projected W/Q Maximum Annual Concentration (PMAC) 202 I 1.0 mile S - Substation, Construction Rd. W/Q 203 I 2.0 miles SSW - Southport Substation W/Q 204 C 22.4 miles NNE - Sutton Plant (Historical W/Q Control) 205 I 0.6 miles SSE - Spoil Pond W/Q 206 C 11.3 miles NW - Brunswick County W/Q Complex 400 C 0.6 miles NE - Intake Canal M 401 I 4.9 miles SSW - Discharge Canal @ OD M Pumps 404 I 0.16 miles SW, Monitoring Well ESS-1B Q/SA 407 I 0.06 miles ENE, Monitoring Well ESS-13B Q/SA 409 I 0.65 miles NE, Monitoring Well ESS-17A Q/SA 410 I 0.65 miles NE, Monitoring Well ESS-17B Q/SA 418 I Monitoring Well ESS-21B, Near SDSP Q/SA 423 I Monitoring Well ESS-24A, Near SDSP Q/SA 424 I Monitoring Well ESS-24B, Near SDSP Q/SA 426 I Monitoring Well ESS-25B, Near SDSP Q/SA 429 I Monitoring Well ESS-27A, Near SDSP Q/SA 494 I Nancys Creek March Area - WP-106 M 495 I Nancys Creek - WP-52 M 496 I Nancys Creek - WP-53 M 497 I Nancys Creek - WP-55 M 498 I Nancys Creek - WP-57 M 499 C Cape Fear River - WP-61 M 500 I 5.0 miles SSW - Discharge - Beach near SA OD Pumps 501 I Nancys Creek, Adjacent to WP-55, Near A SDSP 604 I Nancys Creek Marsh Area - WP-92 M 607 I Nancys Creek Marsh Area - WP-76 M 609 I Nancys Creek Marsh Area - WP-84 M 612 I Monitoring Well ESS MWPA-118B, Near Q/SA Intake Canal and Plant Stack (b)(c) 700 I 5.5 miles SSW - Atlantic Ocean @ SA discharge (Free Swimmer) 701 I 5.5 miles SSW - Atlantic Ocean @ SA(b)(c) discharge (Bottom Feeders) 702 I 5.5 miles SSW - Atlantic Ocean @ SA(b)(c) discharge (Shellfish/Invertebrates) 703 C Atlantic Ocean; location not specified (Free SA(b)(c)

Swimmer) 704 C Atlantic Ocean; location not specified SA(b)(c)

(Bottom Feeder) 705 C Atlantic Ocean; location not specified SA(b)(c)

(Shellfish/Invertebrates)

Section 2 - Page 22

TABLE 2.1-B (Continued)

Site Type Location Description* Air Surface Shoreline Fish Broadleaf Ground Radioidine Water Sediment (FI) Vegetation Water

& Air Particulate 706 I Nancys Creek; location not specified (Free A(b)

Swimmer) 707 I Nancys Creek; location not specified A(b)

(Bottom Feeder) 708 I Nancys Creek; location not specified A(b)

(Shellfish/Invertebrates) 800 I 0.7 miles NE - Intake Canal M(a) 801 I 0.8 miles SW - Discharge Canal M(a) 802 C 10.1 miles - Location not Specified M(a) 803 I 0.6 miles SSE - Spoil Pond M(a) 804 I 0.7 miles S - Leonard Street plant exit M(a) adjacent to RR tracks (a) When Available (b) Edible Portions (c) When in Season

GPS data reflect approximate accuracy to within 2-5 meters. GPS field measurements were taken as close as possible to the item of interest.

SDSP: Storm Drain Stabilization Pond Section 2 - Page 23

TABLE 2.1-C BRUNSWICK STEAM ELECTRIC PLANT (BSEP)

RADIOLOGICAL MONITORING PROGRAM SAMPLING LOCATIONS (TLD SITES)

Table 2.1-C Codes IR Inner Ring OR Outer Ring ISFSI Independent Spent Fuel Storage Installation C Control SI Special Interest Site Measure Location* Distance Sector Site Measure Location* Distance Sector

Type (miles) # Type (miles) 1 IR 1.1 miles E 1.1 E 27 OR 5.1 miles NNW 5.1 NNW 2 IR 0.9 miles ESE 0.9 ESE 28 OR 4.2 miles NW 4.2 NW 3 IR 0.9 miles SE 0.9 SE 29 IR 2.6 miles SSW 2.6 SSW 4 IR 1.1 miles SSE 1.1 SSE 30 IR 2.0 miles NE 2.0 NE 5 IR 1.1 miles S 1.1 S 31 IR 2.5 miles ENE 2.5 ENE 6 IR 1.6 miles SSW 1.6 SSW 32 OR 5.8 miles ENE 5.8 ENE 7 IR 1.1 miles SW 1.1 SW 33 OR 4.1 miles E 4.1 E 8 IR 1.2 miles W 1.2 W 34 OR 5.4 miles E 5.4 E 9 IR 1.0 miles WNW 1.0 WNW 35 OR 7.3 miles SSE 7.3 SSE 10 IR 0.8 miles NW 0.8 NW 36 OR 8.9 miles NE 8.9 NE 11 IR 0.9 miles NNW 0.9 NNW 37 OR 5.5 miles NW 5.5 NW 12 IR 1.1 miles N 1.1 N 38 OR 11.0 miles W 11.0 W 13 IR 1.2 miles NNE 1.2 NNE 39 OR 5.3 miles SW 5.3 SW 14 IR 0.5 miles NE 0.5 NE 40 OR 6.9 miles WSW 6.9 WSW 15 IR 0.9 miles ENE 0.9 ENE 75 OR 4.7 miles S 4.7 S 16 IR 1.0 miles WSW 1.0 WSW 76 OR 4.8 miles SSW 4.8 SSW 17 IR 1.4 miles ESE 1.4 ESE 77 OR 5.4 miles S 5.4 S 18 IR 1.7 miles 1.7 78 OR 9.9 miles NNE 9.9 NNE 20 IR 2.1 miles S 2.1 S 79 OR 9.5 miles N 9.5 N 21 IR 2.9 miles SSW 2.9 SSW 81 C 9.9 miles WNW 9.9 WNW 22 OR 5.3 miles SW 5.3 SW 82 ISFSI 0.17 miles NNE @ SW 0.17 NNE corner of ISFSI 23 OR 4.6 miles WSW 4.6 WSW 83 ISFSI 0.27 miles NE @ NW 0.27 NE corner ISFSI 24 IR 3.0 miles W 3.0 W 84 ISFSI 0.27 miles NE @ NE corner 0.27 NE of ISFSI 25 OR 8.6 miles WNW 8.6 WNW 85 ISFSI 0.09 miles ENE @ SE 0.09 ENE corner of ISFSI 26 OR 5.9 miles NW 5.9 NW

GPS data reflect approximate accuracy to within 2-5 meters. GPS field measurements were taken as close as possible to the item of interest.

Section 2 - Page 24

TABLE 2.2-A REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS IN ENVIRONMENTAL SAMPLES Analysis Water Airborne Fish Milk Broadleaf (pCi/liter) Particulate and (pCi/kg, wet) (pCi/liter) Vegetation Gases (pCi/kg)

(pCi/m3)

H-3 30,000 Mn-54 1,000 30,000 Fe-59 400 10,000 Co-58 1,000 30,000 Co-60 300 10,000 Zn-65 300 20,000 Zr-Nb-95 400 I-131 2 0.9 3 100 Cs-134 30 10 1,000 60 1,000 Cs-137 50 20 2,000 70 2,000 Ba-La-140 200 300 TABLE 2.2-B REMP ANALYSIS FREQUENCY - ODCM Rev. 37 Sample Analysis Gamma Tritium Gross TLD Medium Schedule Isotopic Beta Air Radioiodine Weekly X Air Particulate Weekly X Quarterly X Direct Radiation (TLD) Quarterly X Monthly Composite (400 & 401) X X Surface Weekly Grab (495 - 499) X Water Monthly Comp. of Weekly Grab X Weekly Grab (494, 604 - 610) X X Ground Quarterly Grab X Water Semiannual Grab X Shoreline Semiannually (500) X Sediment Annually (501) X Fish and Semiannually (700 - 705) X Shellfish/Invertebrates(a) Annually (706 - 708) X Broadleaf Vegetation(b) Monthly(b) X (a) Edible portions (b) When available Section 2 - Page 25

TABLE 2.2-C REMP ANALYSIS FREQUENCY - ODCM Rev. 38 Sample Analysis Gamma Tritium Gross TLD Medium Schedule Isotopic Beta Air Radioiodine Weekly X Air Particulate Weekly X Quarterly X Direct Radiation (TLD) Quarterly X Surface Monthly Composite (400 & 401) X X Water Monthly Grab X X (494 - 499, 604, 607, & 609)

Ground Quarterly Grab X Water Semiannual Grab X Shoreline Semiannually (500) X Sediment Annually (501) X Fish and Semiannually (700 - 705) X Shellfish/Invertebrates(a) Annually (706 - 708) X Broadleaf Vegetation(b) Monthly(b) X (c) Edible portions (d) When available TABLE 2.2-D DETECTION CAPABILITIES FOR THE A PRIORI LOWER LIMIT OF DETECTION(a)(b)(d)

Analysis Water Airborne Fish Milk Broadleaf Sediment (pCi/liter) Particulates or (pCi/kg, wet) (pCi/liter) Vegetation (pCi/kg, dry)

Gases (pCi/m3) (pCi/kg, wet)

Gross Beta 4 0.01 H-3 3000 Mn-54 15 130 Fe-59 30 260 Co-58, 60 15 130 Zn-65 30 260 Zr-Nb-95 15 I-131 1(c) 0.07 1 60 Cs-134 15 0.05 130 15 60 150 Cs-137 18 0.06 150 18 80 180 Ba-La-140 15 15 (a) This list does not mean that only these nuclides are to be considered. Other peaks that are identifiable, together with these of the above nuclides, shall be analyzed and reported in the AREOR.

(b) The LLD is defined in the BSEP ODCM.

(c) LLD for drinking water samples. If no drinking water pathway exists, a value of 15 pCi/L may be used.

(d) The LLD for each analysis is specified, with the exception of the Nancys Creek Marsh Area principal gamma isotopic and I-131. The LLD for the Nancys Creek Marsh Area gamma isotopic is 5x10-7µCi/ml for Principal Gamma Emitters and 1x10-6 µCi/ml for I-131.

Section 2 - Page 26

3.0 INTERPRETATION OF RESULTS The following section depicts and explains the review of the REMP results conducted during 2017 for the Brunswick Steam Electric Plant (BSEP) and fulfills the reporting requirements of Technical Specifications 5.6.2, BSEP ODCM 7.4.1, and applicable procedures. Review of the 2017 REMP analysis results was performed to identify changes in environmental levels as a result of BSEP operations. Sample data for 2017 was compared to preoperational and historical data. Summary tables containing 2017 information required by Technical Specification 5.6.2 are located in Appendix B.

Evaluation for significant trends was performed for radionuclides that are listed as required within BSEP ODCM. The radionuclides include: H-3, Mn-54, Fe-59, Co-58, Co-60, Zn-65, Zr-95, Nb-95, I-131, Cs-134, Cs-137, Ba-140 and La-140. Gross beta analysis results were trended for air particulates and tritium results for surface water samples.

BSEP ODCM addresses actions to be taken if radionuclides other than those required are detected in samples collected. The occurrences of these radionuclides could be the result of BSEP liquid effluents which contained the radionuclides.

Review of the 2017 data presented in this section supports the conclusion that there were no significant changes in environmental sample radionuclide concentrations of samples collected and analyzed from BSEP and surrounding areas that were attributable to plant operations. The radiological environmental data for 2017 indicates that radioactivity concentrations were not higher than expected and all positively identified measurements attributable to BSEP operations in 2017 were within limits as specified in the BSEP ODCM, thus presenting no significant impact on the environment or public health and safety.

A statistical summary of the BSEP data for 2017 has been compiled and summarized in Appendix B along with any plant-derived activity detected within the scope of the REMP.

3.1 AIRBORNE RADIOIODINE AND PARTICULATES The 371 air cartridge/radioiodine (AR) samples from the indicator (265 samples) and the control (106 samples) stations had Iodine-131 (I-131) concentrations less than the ODCM LLD of 7.00E-2 pCi/m3. The air samplers operated for a total of 99.90% availability for the 2017 year. No I-131 activity due to BSEP operations was identified in any indicator or control samples in 2017. However, I-131 was detected in air samples following the Fukushima Dai-ichi Nuclear Power Plant incident after the March 11, 2011, earthquake and tsunami (NCR # 0456564). Refer to Table 3.1-2 for the highest annual mean indicator location and control location I-131 concentrations since 1999 to 2017.

Section 3 - Page 1

For the period of January 1, 2017, to December 31, 2017, the gross beta activity was detectable in the airborne particulate (AP) samples, with acceptable runtime, from the five indicator locations and the two control locations. The 265 indicator AP samples had an average concentration of 1.72E-2 pCi/m3 (a value lower than the preoperational data) and the 106 control AP samples had an average gross beta concentration of 1.76E-2 pCi/m3 in 2017. The preoperational (1973 - 1974) average concentration was 8.2E-2 pCi/m3. The airborne concentrations of gross beta activity in 2017 are indicative of natural background and do not indicate any activities originating from the nuclear operations at BSEP. Figure 3.1 and Table 3.1-1 provide individual sample gross beta results for the highest annual mean indicator location and the control locations concentration since 1999 to 2017 (refer to Appendix B). The two sample locations' results are similar in concentration and have negligible variance. No plant-related gamma activity was observed for any air particulate filters analyzed during 2016. Natural gamma concentrations identified are typical of the natural environment and are not attributed to plant operations. Refer to Appendix C or Appendix D for deviations and unavailable samples in the 2017 collection year.

No plant-related gamma activity was detected in quarterly composite filter samples from either the indicator or control locations during 2017. An additional gamma analysis was performed on the final 2017 air particulate sample set for calendar reconciliation purposes (NCR # 02174810). BSEP ODCM LLDs and reporting levels for air particulates are contained in Section 2.0 in Table 2.2-D and 2.2-A respectively.

Figure 3.1 pCi/m3 Concentration of Gross Beta in Air Particulate 8.00E-02 7.00E-02 6.00E-02 5.00E-02 4.00E-02 3.00E-02 2.00E-02 1.00E-02 0.00E+00 1999 2001 2003 2005 2007 2009 2011 2013 2015 2017 Indicator Location Control Location Section 3 - Page 2

Table 3.1-1 Mean Concentration of Gross Beta in Air Particulate Year Indicator Location (pCi/m3) Control Location (pCi/m3) 1999 1.82E-2 1.80E-2 2000 2.08E-2 2.01E-2 2001 1.87E-2 1.87E-2 2002 1.62E-2 1.66E-2 2003 1.59E-2 1.59E-2 2004 1.78E-2 1.77E-2 2005 1.86E-2 1.88E-2 2006 1.92E-2 1.90E-2 2007 2.01E-2 2.13E-2 2008 1.94E-2 1.83E-2 2009 1.95E-2 1.83E-2 2010 2.20E-2 2.06E-2 2011 2.08E-2 2.10E-2 2012 1.93E-2 2.03E-2 2013 1.77E-2 1.74E-2 2014 1.97E-2 1.84E-2 2015 1.58E-2 1.60E-2 2016 1.82E-2 1.63E-2 2017 1.77E-2 1.76E-2 Table 3.1-2 Mean Concentration of Air Radioiodine (I-131)

Year Indicator Location (pCi/m3) Control Location (pCi/m3) 1999 0.00E+0 0.00E+0 2000 0.00E+0 0.00E+0 2001 0.00E+0 0.00E+0 2002 0.00E+0 0.00E+0 2003 0.00E+0 0.00E+0 2004 0.00E+0 0.00E+0 2005 0.00E+0 0.00E+0 2006(1) 5.31E-2 0.00E+0 2007 0.00E+0 0.00E+0 2008 0.00E+0 0.00E+0 2009 0.00E+0 0.00E+0 2010 0.00E+0 0.00E+0 2011(2) 1.31E-1 1.00E-1 2012 0.00E+0 0.00E+0 2013 0.00E+0 0.00E+0 2014(3) 0.00E+0 0.00E+0 2015 0.00E+0 0.00E+0 2016 0.00E+0 0.00E+0 2017 0.00E+0 0.00E+0 0.00E+0 indicates no detectable measurements (1) 2006 concentration affected by plant conditions (NCR # 0211934).

(2) 2011 concentrations affected by Fukushima Dai-ichi (3) 2014 Gamma spectroscopy system was replaced 10JUL2014. Gamma spectroscopy system hardware, detector cooling apparatus, software, electronics, nuclide identification libraries, and analytical test matrix components for test matrices were modified (NCR # 0739995). No analytical changes were noted due to the 2014 gamma spectroscopy system change.

Section 3 - Page 3

3.2 SURFACE WATER Surface water (SW) is sampled monthly from the intake and discharge canal, while Nancys Creek samples and Nancys Creek Marsh Area samples are sampled weekly per BSEP ODCM Revision 37. Refer to Table 2.2-B for REMP Analysis Frequency -

ODCM Rev. 37. These samples are analyzed for gamma-emitting radionuclides and for tritium. Tritium analysis is performed weekly on the Nancys Creek samples. Sampling and compositing, of the Nancys Creek samples, for gamma emitters is weekly and the gamma analysis is performed monthly on the samples composited weekly. The current BSEP ODCM (Revision 37) effective date of October 29, 2013, states for the Nancys Creek Marsh Area that samples are collected weekly and are analyzed weekly for tritium, while ODCM sample location 494 and 604 are composited weekly and the composite (Waypoint Comp - sample ID #1067) are analyzed weekly for gamma emitters. Nancys Creek Marsh Area surface water samples 605, 606, and 607 are collected weekly and composited (Waypoint Comp (70) - sample ID #1065) for gamma analysis along with surface water samples 608, 609, and 610 (Waypoint Comp (80) - sample ID #1066). Per BSEP ODCM Revision 38 effective date of August 1, 2017; the Nancy's Creek samples and the Nancy's Creek Marsh Area samples are sampled monthly (grab samples) and analyzed for gamma-emitting radionuclides and tritium. Refer to Table 2.2-C for REMP Analysis Frequency - ODCM Rev. 38. The gamma analyses indicated that no detectable concentrations of gamma emitting radionuclides relating to plant effluents appeared in any of the surface water indicator or control samples. None of the control samples (SW-400 or 499) indicated the presence of tritium. However, 28 out of 412 indicator samples indicated the presence of tritium in 2017. The predominate indicator locations indicating tritium in 2017 were at Nancys Creek Marsh Area and the discharge canal. Two of the twelve samples from the historical discharge canal (SW-401) indicated the presence of tritium, while 26 out of 260 samples from Nancys Creek Marsh Area indicated the presence of tritium. The tritium activity detected in SW-401 (the discharge canal composite sample) had an average tritium concentration of 3.36E+2 pCi/L, which was expected due to plant operations at the time of sampling. The indicator samples from Nancys Creek and Nancys Creek Marsh Area had an average concentration of 9.43E+2 pCi/L of tritium activity. The reporting limit for tritium in environmental samples is 3.00E+4 pCi/L (30,000 pCi/L); therefore, per BSEPs ODCM requirements (7.13.15 c and d), all of the detected values are below the reportable limit. The total level of radioactivity as the result of plant effluents in each environmental sampling medium at a required location shall be less than the limit specified when averaged over the calendar quarter. Three surface water composite samples (Waypoint Comp (70) - sample ID

1065, Waypoint Comp (80) - sample ID #1066, and Waypoint Comp - sample ID

1067) collected May 23, 2017 per BSEP ODCM Table 7.3.15-1 were not analyzed for gamma-emitting radionuclides by BSEP Laboratory (Bio-Lab) in the required timeframe stated in the BSEP ODCM (NCR # 02128415). Refer to Appendix D, Analytical Deviations for additional information. Figure 3.2 displays the tritium results for the highest annual mean indicator and control locations concentrations since 1999 to 2017.

Table 3.2 lists the highest annual mean concentrations for indicator and control locations.

Refer to Appendix B for additional surface water results.

Section 3 - Page 4

Figure 3.2 pCi/liter Concentration of Tritium in Surface Water 30000 25000 20000 15000 10000 5000 0

1999 2001 2003 2005 2007 2009 2011 2013 2015 2017 Indicator Location Control Location There is no reporting level for tritium in surface water; however, if no drinking water pathway exists, a value of 30,000 pCi/l may be used.

Table 3.2 Mean Concentration of Tritium in Surface Water Year Indicator Location (pCi/l) Control Location (pCi/l) 1999 0.00E+0 0.00E+0 2000 0.00E+0 0.00E+0 2001 0.00E+0 0.00E+0 2002 0.00E+0 0.00E+0 2003 0.00E+0 0.00E+0 2004 0.00E+0 0.00E+0 2005 3.22E+2 0.00E+0 2006 0.00E+0 0.00E+0 2007 6.30E+2 0.00E+0 2008 4.85E+2 0.00E+0 2009 5.75E+2 0.00E+0 2010 3.39E+2 0.00E+0 2011 9.28E+2 0.00E+0 2012 6.47E+3 0.00E+0 2013 1.29E+3 0.00E+0 2014 8.80E+2 0.00E+0 2015 1.02E+3 0.00E+0 2016 3.18E+3 0.00E+0 2017 1.33E+3 0.00E+0 0.00E+0 indicates no detectable measurements Section 3 - Page 5

3.3 GROUND WATER Ground water (GW) is sampled quarterly and semiannually from ten indicator sample sites. These samples are analyzed for gamma-emitting radionuclides (at least semiannually) and for tritium (at least quarterly). The analyses indicated that no detectable concentrations of gamma emitting radionuclides relating to plant effluents appeared in any of the indicator samples in 2017. The tritium analyses indicated detectable concentrations of tritium in three out of forty indicator samples analyzed in 2017 for an average tritium concentration of 3.76E+2 pCi/L. Refer to Appendix B for additional ground water results. Table 3.3 lists the tritium results for the highest annual mean concentrations for indicator and control locations since 1999 to 2017.

The county of Brunswick utilizes water from the Cape Fear River, which is processed at the Northwest Water Treatment Plant, and groundwater that is pumped from the Castle Hayne Aquifer, which is processed at the 211 Water Treatment Plant in Southport. The 211 Water Treatment Plant supplies drinking water to Southport, Oak Island, and St.

James Plantation. The 211 Water Treatment Plant uses ground water from fourteen wells screened in the Castle Hayne formation approximately 175 feet below the ground's surface and is located approximately 4 miles northwest, up gradient, of the site according to the North Carolina Department of Environmental Quality (NCDEQ) Public Water Supply Section and the Brunswick County Public Utilities Water Distribution Division.

The City of Southport has a network of ground water supply wells installed in the Castle Hayne and PeeDee aquifers, within two miles of the BNP Storm Drain Stabilization Pond (SDSP) area; however, these wells are only maintained as emergency or backup supply wells. Between the Ground Water Program at BSEP, the BSEP REMP, the information provided by the Castle Hayne Aquifer/ formation, and Silar Services, Inc.; the drinking water source for the public is sufficiently monitored and a control point for sampling drinking water is not needed.

Section 3 - Page 6

Table 3.3 Mean Concentration of Tritium in Ground Water Year Indicator Location (pCi/l) Control Location (pCi/l) 1999 N/A N/A 2000 N/A N/A 2001 N/A N/A 2002 N/A N/A 2003 N/A N/A 2004 N/A N/A 2005 N/A N/A 2006 N/A N/A 2007 N/A N/A 2008 1.50E+6 No Control 2009 6.48E+5 No Control 2010 5.66E+5 No Control 2011 3.10E+2 No Control 2012 4.00E+2 No Control 2013 4.66E+2 No Control 2014 6.54E+2 No Control 2015 4.02E+2 No Control 2016 0.00E+0 No Control 2017 3.76E+2 No Control 0.00E+0 indicates no detectable measurements N/A indicates that Ground Water samples were not part of the BSEP REMP until 2008.

3.4 MILK/BROADLEAF VEGETATION No milk (milch) sampling locations are currently identified in BSEP environs; therefore, no sampling of this media was available in 2017.

Food crops were not grown in the vicinity of the plant in 2017 and this media was represented by indigenous vegetation samples consisting primarily of wax myrtle leaves.

Forty-eight samples were collected from indicator locations and twelve samples from the control location. No detectable activities relating to plant effluents were detected in any of the indicator or control broadleaf vegetation sample media in 2017. No other gamma activity was detected in any sample other than naturally occurring gamma activity.

Figure 3.4 displays the highest annual mean indicator and control location concentrations for Cs-137 in broadleaf vegetation since 1999 to 2017. Table 3.4 lists the highest annual mean concentrations for indicator and control locations for Cs-134, Cs-137, Co-60, and I-131 in broadleaf vegetation since 1999 to 201.

Section 3 - Page 7

Figure 3.4 pCi/kg Concentration of Cs-137 in Broadleaf Vegetation 1.00E+02 8.00E+01 6.00E+01 4.00E+01 2.00E+01 0.00E+00 1999 2001 2003 2005 2007 2009 2011 2013 2015 2017 Indicator Location Control Location 5% Reporting Limit Table 3.4 Mean Concentrations of Radionuclides in Broadleaf Vegetation (pCi/kg)

Year Cs-134 Cs-134 Cs-137 Cs-137 Co-60 Co-60 I-131 I-131 Indicator Control Indicator Control Indicator Control Indicator Control 1999 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2000 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2001 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2002 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2003 0.00E+0 0.00E+0 0.00E+0 3.42E+1 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2004 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2005 0.00E+0 0.00E+0 3.32E+1 3.66E+1 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2006 0.00E+0 0.00E+0 0.00E+0 2.73E+1 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2007 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2008 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2009 0.00E+0 0.00E+0 0.00E+0 1.69E+1 4.94E+1 0.00E+0 0.00E+0 0.00E+0 2010 0.00E+0 0.00E+0 0.00E+0 1.73E+1 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2011(1) 2.60E+1 1.64E+1 2.48E+1 2.68E+1 0.00E+0 0.00E+0 2.20E+2 1.48E+2 2012 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2013 0.00E+0 0.00E+0 0.00E+0 2.18E+1 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2014(2) 0.00E+0 0.00E+0 0.00E+0 2.29E+1 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2015 0.00E+0 0.00E+0 0.00E+0 2.98E+1 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2016 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 2017 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 0.00E+0 indicates no detectable measurements (1) 2011 concentration affected by Fukushima Dai-ichi (2) 2014 Gamma spectroscopy system was replaced 10JUL2014. Gamma spectroscopy system hardware, detector cooling apparatus, software, electronics, nuclide identification libraries, and analytical test matrix components for test matrices were modified (NCR # 0739995). No analytical changes were noted due to the 2014 gamma spectroscopy system change.

Section 3 - Page 8

3.5 FISH and INVERTEBRATES Fish (free swimmers and bottom feeders), invertebrate (SH), and benthic organism (BO) samples are collected semiannually from three locations: (1) near the Atlantic Ocean discharge pipe at Caswell Beach and (2) a control location in the Atlantic Ocean not influenced by plant operations and (3) annually from three locations on Nancys Creek (Figure 2.1-5). Fifteen samples were collected from indicator and control locations during 2017. No detectable activities relating to plant effluents were detected in the indicator or control fish and invertebrate sample media in 2017.

3.6 SHORELINE SEDIMENT Four shoreline sediment (SS) indicator samples were collected in 2017. All of the radionuclides indicative of plant effluents were determined to be less than the respective LLDs for gamma-emitting radionuclides in both samples from the beach area near the pumping station location at Caswell Beach and one sample from the Nancys Creek area.

Two shoreline sediment samples in 2017 were drawn from Nancys Creek adjacent to WP-55 near the Storm Drain Stabilization Pond (SDSP), where one of the indicator samples contained Cesium (Cs)-137 activity (Single Value: 1.13E+2 pCi/kg, dry). The Nancy's Creek sample that indicated Cs-137 activity was analyzed for Iron (Fe)-55, Strontium (Sr)-89, Strontium (Sr)-90, and Nickel (Ni)-63 by General Engineering Laboratories, LLC (GEL) where all the results were less than the respective LLDs. Per BSEP ODCM revision 37 and revision 38; if plant activity is detected, then Sr-89, 90, and Fe-55 analyses are to be performed on the shoreline sediment sample and the frequency of sampling for the shoreline sediment sample from Nancys Creek will increase to semi-annually for the next sampling year. Figure 3.6 displays the highest annual mean indicator concentrations for Cs-137 in shoreline sediment since 1999 to 2017. Table 3.6 lists the highest annual mean concentrations for the indicator locations for Cs-137 in shoreline sediment since 1999 to 2017.

Section 3 - Page 9

Figure 3.6 pCi/kg Concentration of Cs-137 in Shoreline Sediment 2.00E+02 1.80E+02 1.60E+02 1.40E+02 1.20E+02 1.00E+02 8.00E+01 6.00E+01 4.00E+01 2.00E+01 0.00E+00 1999 2001 2003 2005 2007 2009 2011 2013 2015 2017 Indicator Location Control Location Table 3.6 Mean Concentration of Radionuclides in Shoreline Sediment YEAR Cs-137 Indicator (pCi/kg) 1999 0.00E+0 2000 0.00E+0 2001 0.00E+0 2002 0.00E+0 2003 0.00E+0 2004 0.00E+0 2005 0.00E+0 2006 0.00E+0 2007 0.00E+0 2008 0.00E+0 2009 1.65E+2 2010 1.57E+2 2011 1.77E+2 2012 1.69E+2 2013 7.13E+1 2014(1) 1.26E+2 2015 1.32E+2 2016 1.32E+2 2017 1.13E+2 0.00E+0 indicates no detectable measurements There is no control location for Shoreline Sediments.

(1) 2014 Gamma spectroscopy system was replaced 10JUL2014. Gamma spectroscopy system hardware, detector cooling apparatus, software, electronics, nuclide identification libraries, and analytical test matrix components for test matrices were modified (NCR #

0739995). No analytical changes were noted due to the 2014 gamma spectroscopy system change.

Section 3 - Page 10

3.7 DIRECT GAMMA RADIATION 3.7.1 ENVIRONMENTAL TLD In 2017, 177 TLDs were analyzed, 173 at indicator locations and 4 at the control location. TLDs are collected and analyzed quarterly. There were three missing TLDs during the BSEP 2017 collection period, refer to Appendix C for information.

Thermoluminescent dosimeters (TLDs) were used to monitor ambient radiation exposures in the plant environs. The environmental data on external radiation exposure for 2017 was essentially unchanged from 1989-2016, with an average exposure for all of 2017 indicator locations of 10.1 mR per std. quarter. The average exposure observed over the preoperational period was 1.02 mR per week observed from the fourth quarter of 1972 through the second quarter of 1975.

Table 3.7-3 provides a comparison of recent data with the preoperational and historical data.

The average quarterly exposure at the indicator and control locations was 10.1 mR/Std. Qtr. and 10.8 mR/Std. Qtr. respectively. The highest indicator location was 3.0 miles W of the plant and its average was 14.6 mR/Std. Qtr. The differences among these locations are attributed to variations in soils, local geology, and are not the result of plant operations.

Comparison of the average annual TLD exposure between the inner and outer ring TLD data and the control TLD data for 1999 to 2017 is presented in Figure 3.7 and Table 3.7-1.

TLD averages per Appendix B do include a separate line for the four ISFSI TLDs that were added to the program as of 3rd Quarter 2010. These TLDs are not indicative of the plants environmental monitoring programs TLDs, so they will be handled separately. The ISFSI TLD data is included with the environmental data results as a separate section. Comparison of the 2017 ISFSI TLD data after loaded fuel with preoperational data (2008 - 3rd Quarter 2010) indicates that the average pre-op TLD dose levels were about the same as the average after fuel was loaded (See Table 3.7-2). Dry fuel storage radiation measurements have been monitored since 2008 and additional information can be found in the BSEP 2017 Annual Release Report.

As of first quarter 2014, the environmental TLDs that are placed in the field for REMP are Harshaw TLDs. Panasonic TLDs were the type of environmental TLDs for BSEP REMP monitoring prior to 2014. This change was a merger initiative in order to achieve fleet standardization of the TLD program. This change in environmental TLDs for the REMP indicates a step change in activity as mentioned in NCR # 01982479 between the Panasonic TLD readings prior to 2014 and the Harshaw TLD readings from 2014 to present. There are three factors that can be attributed to the step increase that was observed: (1) the annealing method levels employed were lower for the Panasonic TLDs, (2) transit control subtraction Section 3 - Page 11

differences, and (3) the calculation/method of fade correction (fixed fade control -

vs - actual in field TLDs). Starting in 2016, enhanced analytical methods will be evaluated for future implementation when sufficient data is available. The new methods will improve data transparency and interpretation.

A TLD Intercomparison Program is conducted as part of the quality assurance program. Results of this program are included in Section 4.7.

Figure 3.7 mR/Std. Qtr. Direct Gamma Radiation (TLD) Results 40 30 20 10 0

1999 2001 2003 2005 2007 2009 2011 2013 2015 2017 Inner Ring Outer Ring Control There is no reporting level for Direct Radiation (TLD)

Section 3 - Page 12

Table 3.7-1 Direct Gamma Radiation (TLD) Results Inner Ring Average Outer Ring Average Control Average Year (mR/Std. Qtr.) (mR/Std. Qtr.) (mR/Std. Qtr.)

1999 9.76E+0 9.53E+0 1.11E+1 2000 9.75E+0 9.61E+0 1.11E+1 2001 1.01E+1 9.88E+0 1.09E+1 2002 9.65E+0 9.45E+0 1.09E+1 2003 9.60E+0 9.51E+0 1.05E+1 2004 9.78E+0 9.68E+0 1.06E+1 2005 9.94E+0 9.64E+0 1.07E+1 2006 1.02E+1 9.80E+0 1.07E+1 2007 9.96E+0 9.55E+0 1.06E+1 2008 9.93E+0 9.83E+0 1.07E+1 2009 1.00E+1 9.98E+0 1.06E+1 2010 1.01E+1 1.01E+1 1.07E+1 2011 1.00E+1 9.86E+0 1.08E+1 2012 9.78E+0 9.79E+0 1.10E+1 2013 9.98E+0 9.61E+0 1.12E+1 2014 1.01E+1 9.98E+0 1.05E+1 2015 1.06E+1 1.06E+1 1.14E+1 2016 1.01E+1 9.76E+0 1.03E+1 2017 1.03E+1 9.73E+0 1.08E+1 Table 3.7-2 ISFSI TLD Dose (mR/Std. Qtr.)

TLD # 82 TLD # 83 TLD # 84 TLD # 85 Average Pre-Op (1st Qtr. 2008 to 3rd Qtr. 2010) 30.1 +/- 3.1 22.4 +/- 2.1 16.7 +/- 1.6 53.2 +/- 7.6 Average after Fuel Loaded (4th Qtr. 2010 to 4th Qtr. 2017) 30.1 24.3 18.3 40.6 Section 3 - Page 13

Table 3.7-3 Brunswick Steam Electric Plant HISTORICAL TLD RESULTS (1972-2017)

Average Exposure of All TLD Monitoring Year Locations (mR per week) 1972 (4th Qtr.) 0.80 1973 1.25 1974 0.97 1975 (1st, 2nd Qtr) 0.80 1976 0.98 1977 1.32 1978 1.24 1979 0.93 1980 0.90 1981 0.96 1982 1.18 1983 1.21 1984 0.98 1985 1.03 1986 0.89 1987 0.92 1988 0.86 1989 0.75 1990 0.76 1991 0.76 1992 0.75 1993 0.78 1994 0.77 1995 10.1 (mR per quarter)*

1996 10.1 (mR per quarter) 1997 10.1 (mR per quarter) 1998 9.7 (mR per quarter) 1999 9.7 (mR per quarter) 2000 9.7 (mR per quarter) 2001 10.0 (mR per quarter) 2002 9.6 (mR per quarter) 2003 9.6 (mR per quarter) 2004 9.7 (mR per quarter) 2005 9.8 (mR per quarter) 2006 10.0 (mR per quarter) 2007 9.8 (mR per quarter) 2008 9.9 (mR per quarter) 2009 10.0 (mR per quarter) 2010 10.1 (mR per quarter) 2011 9.9 (mR per quarter) 2012 9.8 (mR per quarter) 2013 9.8 (mR per quarter) 2014 10.0 (mR per quarter) 2015 10.7 (mR per quarter) 2016 10.0 (mR per quarter) 2017 10.1 (mR per quarter)

TLD exposure in mR per quarter beginning in 1995. The equivalent weekly exposure is 0.78 mR.

Section 3 - Page 14

3.8 LAND USE CENSUS The 2017 BSEP Annual Land Use Census was conducted during June of 2017 as required by the BSEP ODCM. Table 3.8-A summarizes the BSEP 2017 census results. No environmental program changes were required as a result of the 2017 Land Use Census.

3.8.1 PURPOSE OF LAND USE CENSUS The land use census identifies the pathways (or routes) that radioactive material may reach the general populations near commercial nuclear generating stations.

This is accomplished by completing studies each year that identify how the surrounding lands are used by the population. A comprehensive census of the use of the land within a five-mile (8 kilometer) distance of the plant is completed during the growing season each year. This information is used for dose assessment and to identify changes to the stations sampled and the type of samples. These results ensure that the Radiological Environmental Monitoring Program (REMP) is based upon current data regarding human activity in the vicinity of the plant.

Therefore, the purpose of the land use census is to ensure the monitoring program is current, as well as provide data for the calculation of estimated radiation exposure.

The pathways evaluated are:

Ingestion Pathway - Results from eating food crops that may have radioactive materials deposited on them, incorporated radioactive materials from the soil or atmosphere. Another pathway is through drinking milk from local cows or goats, if these are present. The grass used to feed these animals may have had radioactive materials deposited on them, that can then be transferred to the milk.

Direct Radiation Exposure Pathway- Results from deposition of radioactive materials on the ground or from passage of these radioactive materials in the air.

Inhalation Pathway- Results from breathing radioactive materials transported in the air.

3.8.2 METHODOLOGY The following must be identified within the five-mile (8 kilometer) radius of the plant for each of the sixteen meteorological sectors (compass direction the winds may blow, for example NNE [North North East]):

The nearest resident The nearest garden of greater than 500 square feet, producing broadleaf vegetation Section 3 - Page 15

The nearest milk animal The following must also be identified (for elevated releases) within the three-mile radius of the plant for each of the 16 meteorological sectors:

The location of all milk animals The location of all gardens of greater than 500 square feet, producing broadleaf vegetation The primary method is visual inspection from the roadside within the five (5) mile radius, with the exception of the Sunny Point Military Ocean Terminal. This information may be supplemented with data from aerial photographs and a Global Positioning System (GPS) to determine distance and direction from the plant.

Distances from the plant are accurate to within one tenth of a mile.

3.8.3 LAND USE CENSUS RESULTS The 2016 and 2017 results of the survey for the nearest resident, garden, milk and meat animals in each sector are compared in Table 3.8-A.

The resident portion of the census conducted in June of 2017 did not identify any new residents closer to the plant; therefore, no changes from the 2016 land use census. The garden portion of the census identified changes in the distance of the nearest garden in three sectors during the 2017 census.

The nearest garden locations changed in the North (N) sector from 1.0 mile to no garden, SW from 2.2 miles to 2.8 miles, and in the NNW sector from 0.9 miles to 0.8 miles. No milk animals were located within 5 miles of the plant in 2017.

The 2017 Garden Census was conducted within three (3) miles of BSEP and identifies all gardens of greater than 500 square feet that were found in the survey area. Results of the garden census are located in Table 3.8-B.

Results of the 2017 Land Use and Garden Census indicate stable use of land, confirming that current control locations are appropriate, and no changes are needed for dose assessment and environmental monitoring.

Section 3 - Page 16

Table 3.8-A Brunswick Steam Electric Plant Land Use Census Comparison (2016 - 2017)

Nearest Pathway (Miles)

SECTOR RESIDENT GARDEN MILK/MEAT ANIMALS 2016 2017 2016 2017 2016 2017 N 0.7 0.7 1.0 None* None None NNE 0.8 0.8 0.9 0.9 None None NE None None None None None None ENE None None None None None None E None None None None None None ESE 1.4 1.4 None None None None SE None None None None None None SSE 2.1 2.1 None None None None S 1.1 1.1 1.7 1.7 None None SSW 1.2 1.2 1.7 1.7 None None SW 1.1 1.1 2.2 2.8* None None WSW 1.2 1.2 1.3 1.3 None None W 0.9 0.9 1.2 1.2 None None WNW 0.9 0.9 1.0 1.0 None None NW 0.9 0.9 4.9 4.9 None None NNW 0.8 0.8 0.9 0.8* None None

Represents a change from the previous year.

Sector and distance determined by Global Positioning System.

Section 3 - Page 17

Table 3.8-B Brunswick Steam Electric Plant Garden Census - 2017 DISTANCE DISTANCE SECTOR (miles) SECTOR (miles)

N None SSW 2.2 NNE 0.9 SSW 2.3 NNE 1.0 SSW 2.3 NE None SSW 2.4 ENE None SSW 2.6 E None SSW 2.7 ESE None SSW 2.7 SE None SSW 2.8 SSE None SSW 2.8 S 1.7 SW 2.8 S 1.8 SW 3.0 S 1.9 WSW 1.3 S 1.9 WSW 1.6 S 2.0 WSW 2.1 S 2.2 WSW 2.1 S 2.3 W 1.2 S 2.3 W 1.3 S 2.4 W 2.6 S 2.6 W 2.6 SSW 1.7 W 2.6 SSW 1.8 W 2.7 SSW 1.9 W 2.7 SSW 1.9 W 2.8 SSW 2.1 WNW 1.0 SSW 2.1 NW 4.9 SSW 2.1 NNW 0.8 SSW 2.2 NNW 0.9 Section 3 - Page 18

Figure 3.8-1 Section 3 - Page 19

4.0 QUALITY ASSURANCE 4.1 SAMPLE COLLECTION Environmental sample collection at BSEP was performed by BSEP Chemistry personnel in 2017 along with the Environmental Water Resources Group as specified by approved sample collection procedures.

4.2 SAMPLE ANALYSIS EnRad Laboratories performed the environmental sample analyses as specified by approved analysis procedures. EnRad Laboratories is located in Huntersville, North Carolina, at Duke Energys Environmental Center. The ground water samples and most of the surface water samples requiring gamma and tritium analyses were analyzed by the BSEP laboratory through September 2017 and then by EnRad Laboratories. The shoreline sediment samples requiring hard-to-detects (Fe-55, Ni-63, and Sr-89/90) during 2017, were analyzed by a vendor laboratory; General Engineering Laboratory, LLC (GEL); as specified by approved analysis procedures.

4.3 DOSIMETRY ANALYSIS The Radiation Dosimetry and Records group performed the environmental dosimetry measurements as specified by approved dosimetry analysis procedures.

4.4 LABORATORY EQUIPMENT QUALITY ASSURANCE 4.4.1 DAILY QUALITY CONTROL BSEP and EnRad Laboratories all have an internal quality assurance program which monitors each type of instrumentation for reliability and accuracy. Quality control checks are performed to ensure that instruments are in proper working order and these checks are used to monitor instrument performance.

4.4.2 CALIBRATION VERIFICATION National Institute of Standards and Technology (NIST) standards that represent counting geometries are analyzed as unknowns at various frequencies ranging from weekly to annually to verify that efficiency calibrations are valid. The frequency is dependent upon instrument use and performance. Investigations are performed and documented should calibration verification data fall outside of the acceptable limits.

Section 4 - Page 1

4.4.3 BATCH PROCESSING Method quality control samples are analyzed with sample analyses that are processed in batches. These include tritium analyses in ground water and surface water samples.

4.5 DUKE ENERGY INTERLABORATORY COMPARISON PROGRAM In 2017 Duke Energy Environmental Laboratory (EnRad) participated in an interlaboratory program to satisfy Radiological Environmental Monitoring Program requirements in Duke Energy nuclear plant Offsite Dose Calculation Manuals and Selected Licensee Commitments Manuals, as applicable. The EnRad organization, in 2017, elected to voluntarily withdraw its North Carolina State Drinking Water Certification with the North Carolina Department of Health and Human Services, State Laboratory of Public Health. It was determined that there was no longer a business case for maintaining this certification (NCR # 02093302). Samples requiring this certification are sent to General Engineering Laboratories, LLC (GEL), which maintains the necessary certifications to meet regulatory commitments for drinking water.

EnRad Laboratory participated in an interlaboratory program with Eckert & Ziegler Analytics (EZA) in 2017. EZA results were evaluated against the NRC Inspection Manual Procedure 84750 (IP 84750) acceptance criteria stated in EnRad Procedure 515, Cross Check Program Administration. All regulatory requirements continue to be met by the EZA Cross Check Program.

4.5.1 DUKE ENERGY INTERLABORATORY PROGRAM EnRad Laboratories made the determination in 2017 to discontinue its participation in the Duke Energy Fleet Scientific Services (FSS) Interlaboratory Program, as EnRad already maintains a sufficient cross check program through EZA. Historically, Duke Energy FSS has maintained its own Interlaboratory Program supporting the Duke Energy fleet. At EnRad, this has been a supplement to EnRad's participation in the EZA Cross Check Program. In 2017, FSS determined that shifting business needs had reduced the need for the FSS Interlaboratory Program and the majority of the Interlaboratory Program has been discontinued.

4.5.2 ECKERT & ZIEGLER ANALYTICS CROSS CHECK PROGRAM EnRad Laboratories participated in the Eckert & Ziegler Analytics (EZA) Cross Check Program during 2017. Cross check samples including mixed gamma in liquid, mixed gamma in vegetation, low-level I-131 in liquid, mixed gamma air filters (single and composites), mixed gamma and I-131 air cartridges, strontium in water, gross alpha and beta in water, gross alpha and beta in filters, and tritium in water were analyzed at various times of the year. A summary of the EnRad Laboratory program results for 2017 is documented in Table 4.0-A.

Section 4 - Page 2

Interlaboratory cross check samples from EZA were received and analyzed in all four quarters of 2017. Table 4.0-A lists the performance for specific samples.

Eighty-seven nuclide results were reported to EZA of which eighty-six (98.9%)

met the acceptance criteria based on IP 84750. One EZA cross check nuclide result did exhibit a high bias and EnRad proactively initiated an NCR to investigate this bias (NCR # 02138003).

In the second quarter of 2017, a mixed gamma in filter cross check (E11890) yielded a disagreement on only the Zinc 65 nuclide value (ratio to the known of 130%). An overall high bias was noted across all other nuclides, primarily in the high energy range. NCR # 02138003 was written to investigate and document the failure. It was determined that the geometry used for gamma filter counting contained compounding biases, leading to consistently high results in the upper energy range. Following the implementation of a new filter geometry, an equivalent filter cross check (E12011) was analyzed in the fourth quarter of 2017.

The cross check passed with reduced biases, and a Zinc-65 nuclide value of 111%

of the known.

The BSEP Chemistry Laboratory participated in the Analytical Environmental Cross Check Program administered by Eckert & Ziegler Analytics, Inc. during 2017. Cross check samples including tritium in water, gammas in solids, and other sample media were analyzed in 2017. A summary of the applicable BSEP Laboratory program results for 2017 is documented in Table 4.0-D. BSEP cross check results not appearing in Table 4.0-D will be supplied upon request.

4.5.3 ERA PROFICIENCY TESTING EnRad Laboratories made the determination in 2017 to discontinue its participation in the Environmental Resource Associates (ERA) Proficiency Testing program, as this program's participation was solely for the purpose of maintaining EnRad's North Carolina State Drinking Water Certification requirements (NCR # 02093302).

4.6 STATE OF NORTH CAROLINA INTERCOMPARISON PROGRAM EnRad Laboratories routinely participates with the North Carolina Department of Health and Human Services in an intercomparison program. EnRad Laboratories sends BSEP Radiological Environmental Monitoring Program air, surface water, fish and invertebrates, broadleaf vegetation, and shoreline sediment samples to the North Carolina Department of Health and Human Services, Division of Public Health for intercomparison analysis.

4.7 TLD INTERCOMPARISON PROGRAM 4.7.1 NUCLEAR TECHNOLOGY SERVICES INTERCOMPARISON PROGRAM Radiation Dosimetry and Records participates in a quarterly TLD intercomparison program administered by Nuclear Technology Services, Inc. of Roswell, GA.

Section 4 - Page 3

Nuclear Technology Services irradiates environmental dosimeters quarterly and sends them to the Radiation Dosimetry and Records group for analysis of the unknown estimated delivered exposure. A summary of the 2017 Nuclear Technology Services Intercomparison Report is documented in Table 4.0-B.

The individual measurements were evaluated and results falling outside the acceptable ratio criteria had an evaluation performed to identify any recommended remedial actions and to reduce anomalous errors. During first quarter of 2017 an environmental external TLD cross check failed and NCR # 02147847 was written to document the failure of the four individual TLDs; however, the overall result fell within both the Duke Energy and Nuclear Technology Services, Inc.

acceptance criteria. To prevent recurrence, the four TLDs were pulled and visually inspected for abnormalities in the elements and overall integrity of the TLDs and no abnormalities were found. The four TLDs were checked per procedure and TLDs # 533830 and 103632 were both removed from service. Complete documentation of any evaluation will be available and provided to the NRC upon request.

4.7.2 INTERNAL CROSS CHECK (DUKE ENERGY)

Radiation Dosimetry and Records participates in a quarterly TLD internal comparison program administered internally by the Dosimetry Lab. The Dosimetry Lab Staff irradiates environmental dosimeters quarterly and submits them for analysis of the unknown estimated delivered exposure. A summary of the 2017 Internal Cross Check (Duke Energy) Program is documented in Table 4.0-B.

4.8 GENERAL ENGINEERING LABORATORY, LLC (GEL)

General Engineering Laboratory, LLC (GEL) participated in various Quality Assurance Programs for Inter-laboratory, Intra-laboratory, Third Party Cross Check programs, and a number of proficiency testing programs during 2017. A summary of the GEL quality assurance program results for the sample media types sent to GEL during 2017 is documented in Table 4.0-C. GEL Quality Assurance Program results not appearing in Table 4.0-C will be supplied upon request.

Section 4 - Page 4

TABLE 4.0-A ECKERT & ZIEGLER ANALYTICS CROSS CHECK PROGRAM 2017 Cross Check Results for EnRad Laboratories Interlaboratory cross check samples from EZA were received and analyzed in all four quarters of 2017. Results are reported directly to Eckert & Ziegler Analytics. Environmental cross check samples were analyzed in replicate, and the result closest to the mean is reported to Eckert & Ziegler Analytics. The acceptance criteria for the program was based on the NRC Inspection Manual Procedure 84750 (IP 84750). Table 4.0-A lists the performance for specific samples.

Eighty-seven nuclide results were reported to EZA of which eighty-six (98.9%) met the acceptance criteria based on IP 84750.

EnRad EZA EnRad/EZA Sample Sample ID Nuclide Quarter Units Evaluation Value Value Ratio Beta Filter in E11755 Cs-137 1 pCi 247 244 1.01 Agreement Planchet E11925A Cs-137 3 pCi 191 199 0.96 Agreement Gamma in E11924 Ce-141 3 pCi 58.8 60.0 0.98 Agreement Cartridge Co-58 3 pCi 81.0 80.7 1.00 Agreement Co-60 3 pCi 182 181 1.01 Agreement Cr-51 3 pCi 144 150 0.96 Agreement Cs-134 3 pCi 132 138 0.95 Agreement Cs-137 3 pCi 123 119 1.04 Agreement Fe-59 3 pCi 88.3 86.5 1.02 Agreement Mn-54 3 pCi 89.7 84.7 1.06 Agreement Zn-65 3 pCi 141 127 1.11 Agreement LLI-131 E12007 I-131 4 pCi/L 58.8 57.7 1.02 Agreement in Water LLI-131 in E11889 I-131 2 pCi/L 95.4 96.3 0.99 Agreement Milk I-131 in E11754 I-131 1 pCi 98.1 93.5 1.05 Agreement Charcoal E12003 Cartridge I-131 3 pCi 64.7 64.5 1.00 Agreement Gamma in E12010 Ce-141 4 pCi/g 0.202 0.195 1.04 Agreement Simulated Co-58 4 pCi/g 0.181 0.178 1.02 Agreement Vegetation (Coffee Co-60 4 pCi/g 0.334 0.342 0.98 Agreement Grounds) Cr-51 4 pCi/g 0.423 0.479 0.88 Agreement Cs-134 4 pCi/g 0.220 0.247 0.89 Agreement Cs-137 4 pCi/g 0.281 0.280 1.00 Agreement Fe-59 4 pCi/g 0.227 0.224 1.01 Agreement Mn-54 4 pCi/g 0.337 0.318 1.06 Agreement Zn-65 4 pCi/g 0.447 0.418 1.07 Agreement Section 4 - Page 5

TABLE 4.0-A (Cont.)

EnRad EZA EnRad/EZA Sample Sample ID Nuclide Quarter Units Evaluation Value Value Ratio Gamma in E11752 Ce-141 1 pCi 101 97.3 1.04 Agreement Composite Filter Cr-51 1 pCi 202 195 1.04 Agreement Cs-134 1 pCi 90.4 80.5 1.12 Agreement Cs-137 1 pCi 99.8 93.9 1.06 Agreement Co-58 1 pCi 106 100 1.06 Agreement Mn-54 1 pCi 126 110 1.14 Agreement Fe-59 1 pCi 101 86.4 1.17 Agreement Zn-65 1 pCi 164 134 1.22 Agreement Co-60 1 pCi 132 123 1.08 Agreement-Gamma in E11753 I-131 1 pCi/L 101 97.8 1.03 Agreement Water Ce-141 1 pCi/L 149 145 1.03 Agreement Cr-51 1 pCi/L 282 291 0.97 Agreement Cs-134 1 pCi/L 117 120 0.97 Agreement Cs-137 1 pCi/L 142 140 1.01 Agreement Co-58 1 pCi/L 154 150 1.03 Agreement Mn-54 1 pCi/L 174 165 1.06 Agreement Fe-59 1 pCi/L 139 129 1.08 Agreement Zn-65 1 pCi/L 226 200 1.13 Agreement Co-60 1 pCi/L 189 183 1.03 Agreement Gamma in E12006 I-131 3 pCi/L 71.8 79.2 0.91 Agreement Water Ce-141 3 pCi/L 105 99.5 1.06 Agreement Cr-51 3 pCi/L 240 248 0.97 Agreement Cs-134 3 pCi/L 208 229 0.91 Agreement Cs-137 3 pCi/L 202 196 1.03 Agreement Co-58 3 pCi/L 135 134 1.01 Agreement Mn-54 3 pCi/L 148 140 1.05 Agreement Fe-59 3 pCi/L 148 143 1.03 Agreement Zn-65 3 pCi/L 238 210 1.13 Agreement Co-60 3 pCi/L 294 299 0.98 Agreement Section 4 - Page 6

TABLE 4.0-A (Cont.)

Sample EnRad EZA EnRad/EZA Sample Nuclide Quarter Units Evaluation ID Value Value Ratio Gamma in E11890 Ce-141 2 pCi 119 114 1.04 Agreement Filter Co-58 2 pCi 124 117 1.06 Agreement (Falcon)

Co-60 2 pCi 150 144 1.04 Agreement Cr-51 2 pCi 240 238 1.01 Agreement Cs-134 2 pCi 148 142 1.04 Agreement Cs-137 2 pCi 122 113 1.08 Agreement Fe-59 2 pCi 107 87.0 1.23 Agreement Mn-54 2 pCi 146 130 1.13 Agreement Zn-65 2 pCi 200 154 1.30 Non-Agreement1 Gamma in E12011 Ce-141 4 pCi 82.5 76.2 1.08 Agreement Filter Co-58 4 pCi 70.8 69.6 1.02 Agreement (Falcon)

Co-60 4 pCi 144 134 1.07 Agreement Cr-51 4 pCi 202 188 1.08 Agreement Cs-134 4 pCi 97.4 96.7 1.01 Agreement Cs-137 4 pCi 119 110 1.09 Agreement Fe-59 4 pCi 98.5 87.9 1.12 Agreement Mn-54 4 pCi 132 125 1.06 Agreement Zn-65 4 pCi 181 164 1.11 Agreement Gamma in E11756 I-131 1 pCi/L 105 97.9 1.07 Agreement Milk Ce-141 1 pCi/L 149 145 1.03 Agreement Cr-51 1 pCi/L 331 290 1.14 Agreement Cs-134 1 pCi/L 116 120 0.97 Agreement Cs-137 1 pCi/L 150 140 1.07 Agreement Co-58 1 pCi/L 152 150 1.02 Agreement Mn-54 1 pCi/L 177 164 1.08 Agreement Fe-59 1 pCi/L 148 129 1.15 Agreement Zn-65 1 pCi/L 224 199 1.12 Agreement Co-60 1 pCi/L 194 183 1.06 Agreement Gross Beta E11892 Cs-137 2 pCi/L 255 270 0.94 Agreement in Water E12009 Cs-137 4 pCi/L 250 265 0.94 Agreement Tritium in E11891 H-3 2 pCi/L 14300 14000 1.02 Agreement Water E12008 H-3 4 pCi/L 13200 13400 0.98 Agreement

1) NCR # 02138003 Section 4 - Page 7

TABLE 4.0-B 2017 ENVIRONMENTAL DOSIMETER CROSS CHECK RESULTS Nuclear Technology Services Radiation Dosimetry and Records participates in a quarterly TLD intercomparison program administered by Nuclear Technology Services, Inc. of Roswell, GA. Nuclear Techno1ogy Services irradiates environmental dosimeters quarterly and sends them to Radiation Dosimetry and Records group for analysis of the unknown estimated delivered exposure. The individual measurements were evaluated and results falling outside the acceptable ratio criteria had an evaluation performed to identify any recommended remedial actions and to reduce anomalous errors. Complete documentation of any evaluation will be available and provided to the NRC upon request.

1st Quarter 2017 2nd Quarter 2017 TLD Reported Delivered Bias Pass/Fail TLD Reported Delivered Bias Pass/Fail Number (mR) (mR) (% diff) Criteria Pass/Fail Number (mR) (mR) (% diff) Criteria Pass/Fail 103469 79.16 72.16 9.70 <+/-15% Pass 103126 20.33 18.90 7.57 <+/-15% Pass 103632 83.94 72.16 16.32 <+/-15% **Fail 103068 20.20 18.90 6.88 <+/-15% Pass 103636 76.22 72.16 5.63 <+/-15% Pass 103065 19.51 18.90 3.23 <+/-15% Pass 103637 77.82 72.16 7.84 <+/-15% Pass 102830 20.64 18.90 9.21 <+/-15% Pass 103642 79.08 72.16 9.59 <+/-15% Pass 103002 20.18 18.90 6.77 <+/-15% Pass Average Bias (B) 9.82 Average Bias (B) 6.73 Standard Deviation (S) 4.00 Standard Deviation (S) 2.19 Measure Performance lBl+S 13.81 <15% Pass Measure Performance lBl+S 8.92 <15% Pass 3rd Quarter 2017 4th Quarter 2017 TLD Reported Delivered Bias Pass/Fail TLD Reported Delivered Bias Pass/Fail Number (mR) (mR) (% diff) Criteria Pass/Fail Number (mR) (mR) (% diff) Criteria Pass/Fail 102253 60.07 60.04 0.05 <+/-15% Pass 102343 72.30 70.02 3.26 <+/-15% Pass 101122 62.80 60.04 4.60 <+/-15% Pass 102265 72.85 70.02 4.04 <+/-15% Pass 103099 60.78 60.04 1.23 <+/-15% Pass 102340 71.25 70.02 1.76 <+/-15% Pass 102288 61.20 60.04 1.93 <+/-15% Pass 103972 66.99 70.02 -4.33 <+/-15% Pass 100163 59.82 60.04 -0.37 <+/-15% Pass 103921 68.54 70.02 -2.11 <+/-15% Pass Average Bias (B) 1.49 Average Bias (B) 0.52 Standard Deviation (S) 1.96 Standard Deviation (S) 3.60 Measure Performance lBl+S 3.45 <15% Pass Measure Performance lBl+S 4.12 <15% Pass Fail** refers to NCR # 02147847 Section 4 - Page 8

TABLE 4.0-B (Cont.)

2017 ENVIRONMENTAL DOSIMETER CROSS CHECK RESULTS Internal Crosscheck (Duke Energy)

Radiation Dosimetry and Records participates in a quarterly TLD internal comparison program administered internally by the Dosimetry Lab. The Dosimetry Lab Staff irradiates environmental dosimetry quarterly and submits them for analysis of the unknown estimated delivered exposure.

1st Quarter 2017 2nd Quarter 2017 TLD Reported Delivered Bias Pass/Fail TLD Reported Delivered Bias Pass/Fail Number (mR) (mR) (% diff) Criteria Pass/Fail Number (mR) (mR) (% diff) Criteria Pass/Fail 102207 49.22 48.0 2.54 <+/-15% Pass 102519 46.79 43.0 8.81 <+/-15% Pass 102208 47.57 48.0 -0.90 <+/-15% Pass 102870 49.18 43.0 14.37 <+/-15% Pass 103410 52.06 48.0 8.46 <+/-15% Pass 103537 46.05 43.0 7.09 <+/-15% Pass 102167 49.65 48.0 3.44 <+/-15% Pass 103541 47.33 43.0 10.07 <+/-15% Pass 102079 51.39 48.0 7.06 <+/-15% Pass 103111 48.21 43.0 12.12 <+/-15% Pass 103409 50.33 48.0 4.85 <+/-15% Pass 102304 45.04 43.0 4.74 <+/-15% Pass 102209 49.32 48.0 2.75 <+/-15% Pass 102873 47.59 43.0 10.67 <+/-15% Pass 102214 49.46 48.0 3.04 <+/-15% Pass 102872 47.85 43.0 11.28 <+/-15% Pass 102117 49.94 48.0 4.04 <+/-15% Pass 102871 47.80 43.0 11.16 <+/-15% Pass 102201 49.83 48.0 3.81 <+/-15% Pass 102861 48.11 43.0 11.88 <+/-15% Pass Average Bias (B) 3.91 Average Bias (B) 10.22 Standard Deviation (S) 2.56 Standard Deviation (S) 2.74 Measure Performance lBl+S 6.47 <15% Pass Measure Performance lBl+S 12.96 <15% Pass 3rd Quarter 2017 4th Quarter 2017 TLD Reported Delivered Bias Pass/Fail TLD Reported Delivered Bias Pass/Fail Number (mR) (mR) (% diff) Criteria Pass/Fail Number (mR) (mR) (% diff) Criteria Pass/Fail 101195 19.81 18.8 5.15 <+/-15% Pass 103951 50.92 50.0 1.84 <+/-15% Pass 103731 19.45 18.8 3.24 <+/-15% Pass 103949 51.06 50.0 2.12 <+/-15% Pass 101190 19.90 18.8 5.63 <+/-15% Pass 103950 51.04 50.0 2.08 <+/-15% Pass 103532 20.61 18.8 9.39 <+/-15% Pass 104011 51.38 50.0 2.76 <+/-15% Pass 100314 19.70 18.8 4.56 <+/-15% Pass 103931 51.10 50.0 2.20 <+/-15% Pass 101264 18.93 18.8 0.48 <+/-15% Pass 104004 50.74 50.0 1.48 <+/-15% Pass 101345 19.18 18.8 1.80 <+/-15% Pass 103996 49.63 50.0 -0.74 <+/-15% Pass 101397 20.06 18.8 6.48 <+/-15% Pass 103963 52.97 50.0 5.94 <+/-15% Pass 100868 20.45 18.8 8.55 <+/-15% Pass 103947 49.17 50.0 -1.66 <+/-15% Pass 103078 20.51 18.8 8.86 <+/-15% Pass 103929 49.88 50.0 -0.24 <+/-15% Pass Average Bias (B) 5.41 Average Bias (B) 1.58 Standard Deviation (S) 3.01 Standard Deviation (S) 2.12 Measure Performance lBl+S 8.43 <15% Pass Measure Performance lBl+S 3.70 <15% Pass Section 4 - Page 9

TABLE 4.0-C 2017 ANNUAL QUALITY ASSURANCE REPORT for the RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM for GEL Laboratories, LLC (GEL)

GEL Known Acceptance Sample Nuclide Quarter Units Evaluation Value Value Range/Ratio HTD in Soil MAPEP-17-MaS36 Fe-55 2 Bq/Kg 804 812 568 - 1056 Agreement Ni-63 2 Bq/Kg -46 N/A False Pos Test Agreement Sr-90 2 Bq/Kg 548 624 437- 811 Agreement MAPEP-17-MaS37 Fe-55 4 Bq/kg 933 1010 707 - 1313 Agreement Ni-63 4 Bq/kg 1240 1220 854 - 1586 Agreement Sr-90 4 Bq/kg 240 289 202 - 376 Agreement I-131 in Milk with EZA E11820 I-131 1 pCi/L 95.7 96.8 0.99 Agreement E11875 I-131 2 pCi/L 99.3 93.6 1.06 Agreement E11928 I-131 3 pCi/L 73.5 71.0 1.04 Agreement E12069 I-131 4 pCi/L 65.9 57.8 1.14 Agreement Other GEL 2016 Annual Environmental Quality Assurance Report results will be supplied upon request.

Section 4 - Page 10

TABLE 4.0-D ECKERT & ZIEGLER ANALYTICS CROSS CHECK PROGRAM 2017 Cross Check Results for BSEP Laboratories BSEP BSEP/EZA Sample Nuclide Quarter Units EZA Value Evaluation Value Ratio Tritium in Water A32492 H-3 1 µCi/cc 8.70E-04 9.00E-04 0.97 Agreement Gamma Solid Ce-141 3 µCi 1.78E-02 1.76E-02 1.01 Agreement A33040 Cr-51 3 µCi 5.15E-02 4.98E-02 1.03 Agreement Cs-134 3 µCi 1.88E-02 2.03E-02 0.93 Agreement Cs-137 3 µCi 1.76E-02 1.69E-02 1.04 Agreement Co-58 3 µCi 1.64E-02 1.60E-02 1.02 Agreement Mn-54 3 µCi 1.40E-02 1.30E-02 1.08 Agreement Fe-59 3 µCi 2.32E-02 2.09E-02 1.11 Agreement Zn-65 3 µCi 2.06E-02 1.99E-02 1.04 Agreement Co-60 3 µCi 2.62E-02 2.60E-02 1.01 Agreement Section 4 - Page 11

APPENDIX A ENVIRONMENTAL SAMPLING ANALYSIS PROCEDURES Appendix A - Page 1

APPENDIX A ENVIRONMENTAL SAMPLING AND ANALYSIS PROCEDURES Adherence to established procedures for sampling and analysis of environmental media at the Brunswick Steam Electric Plant (BSEP) was required to ensure compliance with provisions of the Nuclear Regulatory Commissions Regulatory Guide 4.8, BSEP Technical Specifications, and the BSEP Offsite Dose Calculation Manual (ODCM). Analytical procedures were employed to ensure that the ODCM detection capabilities were achieved at all laboratories (BSEP, EnRad, and GEL).

Environmental sampling was performed by BSEP and Environmental Water Resources Group; while the analyses were performed by BSEP, EnRad Laboratories, General Engineering Laboratory, LLC (GEL) (for special analyses), and Dosimetry and Records.

This appendix describes the environmental sampling frequencies and analysis procedures by media type that each laboratory conducted in 2017.

I. CHANGE OF SAMPLING PROCEDURES The collection frequency was changed for BSEP Surface Water locations SW-495, SW-496, SW-497, SW-498, and SW-499 to a monthly grab sample for tritium and gamma per BSEP ODCM Rev. 38 Table 4.0-1 effective August 1, 2017. The frequency was listed as a weekly grab sample for tritium analysis and a monthly grab sample for gamma analysis in the previous BSEP ODCM revision.

Sample locations SW-605, SW-606, SW-608, and SW-610 were deleted from sampling per BSEP ODCM Rev. 38 Table 4.0-1 effective August 1, 2017.

The collection frequency was changed for BSEP Surface Water locations SW-494, SW-604, SW-607, and SW-609 to a monthly grab sample for tritium and gamma per BSEP ODCM Rev. 38 Table 4.0-1 effective August 1, 2017. The frequency was listed as a weekly grab sample for tritium and gamma in the previous BSEP ODCM revision.

Deleted the weekly composite gamma on Waypoint Composite (70) [B1065], Waypoint Composite (80) [B1066], and Waypoint Composite [B1067] per BSEP ODCM Rev. 38 Table 4.0-1 effective August 1, 2017.

Appendix A - Page 2

II. DESCRIPTION OF ANALYSIS PROCEDURES Gamma spectroscopy analyses are performed using high purity germanium gamma detectors and Canberra analytical software. Designated sample volumes are transferred to appropriate counting geometries and analyzed by gamma spectroscopy. Perishable samples such as fish, invertebrates, and broadleaf vegetation are ground to achieve a homogeneous mixture and then transferred to an appropriate counting geometry. Soil and sediment samples are dried, sifted to remove foreign objects (rocks, clams, glass, etc.), and then transferred to an appropriate counting geometry container. Once prepared for counting, EnRads samples (fish, invertebrates, broadleaf vegetation, soils, and sediments) are analyzed by gamma spectroscopy.

Tritium analyses are performed weekly and monthly by EnRad using low-level environmental liquid scintillation analysis technique on a Perkin-Elmer 2900TR liquid scintillation system or a Perkin-Elmer 3100TR liquid scintillation system. Tritium samples are distilled and batch processed with a laboratory fortified blank, matrix spike, matrix spike duplicate, and blank to verify instrument performance and sample preparation technique are acceptable.

Gross beta analysis is performed weekly on air particulate filter samples by Tennelec XLB Series 5 gas-flow proportional counters. Samples are batch processed with a blank to ensure sample contamination has not occurred.

BSEP and GEL Laboratories follow their facility approved procedures to meet the required BSEP ODCM LLDs.

III. CHANGE OF ANALYSIS PROCEDURES The tritium preparation procedure was modified during 2017 to align with ASTM method D4107-08, Standard Test Method for Tritium in Drinking Water: Water and Environmental Technology. Volume 11.02. 2014 Edition. Tritium dark adaption times were also reduced (NCR # 02134015).

IV. SAMPLING AND ANALYSIS PROCEDURES A.1 AIRBORNE PARTICULATE AND RADIOIODINE Air particulate and radioiodine samples at each of seven locations were composited continuously by means of continuous air samplers. Air particulates were collected on a particulate filter and radioiodines were collected in a charcoal cartridge positioned behind the filter in the sample head. The samplers are designed to operate at a constant flow rate (in order to compensate for any filter loading) and are set to sample approximately 2 cubic feet per minute.

Filters and cartridges were collected weekly. A separate weekly gamma analysis Appendix A - Page 3

was performed on each charcoal cartridge. A weekly gross beta analysis was performed on each filter and then the filters, by location, were composited to produce quarterly filter samples for gamma analysis. The continuous composite samples were collected from the locations listed below.

Location 200 = 1.0 miles WSW Visitors Center Location 201 = 0.5 miles NE Bio Lab Rd. - Projected Maximum Annual Concentration (PMAC)

Location 202 = 1.0 miles S Substation, Construction Rd.

Location 203 = 2.0 miles SSW Southport substation Location 204 = 22.4 miles NNE Sutton Plant (Historical Control)

Location 205 = 0.6 miles SSE Spoil Pond Location 206 = 11.3 miles NW Brunswick County Complex (Control)

A.2 SURFACE WATER A total of fifteen Surface Water samples are collected at different intervals as stated in the BSEP ODCM Rev. 37. Monthly composite surface water samples were collected from two locations (SW-400 and 401) for gamma and tritium analyses. Weekly and Monthly grab samples were collected from five locations (SW-495 - 499). The weekly grab samples were analyzed for tritium, while the monthly grab samples were analyzed for gamma emitters. Weekly grab samples were collected from eight locations (SW-494, 604 - 610) and analyzed for tritium and ODCM specific sample combination composite samples for gamma analysis. Surface water locations #605, #606, #608, and #610 were deleted from the BSEP REMP per BSEP ODCM Revision 38 effective August 1, 2017.

The combination Waypoint Composite samples were also deleted with this revision; therefore, the total of eleven Surface Water samples are collected monthly. The samples are collected from the locations listed below.

Location 400 = 0.6 miles NE - Intake Canal (Control)

Location 401 = 4.9 miles SSW - Discharge Canal @ OD Pumps Location 494 = Nancys Creek Marsh Area - WP-106 Location 495 = Nancys Creek - WP-52 Location 496 = Nancys Creek - WP-53 Location 497 = Nancys Creek - WP-55 Location 498 = Nancys Creek - WP-57 Location 499 = Nancys Creek - WP-61 (Control)

Location 604 = Nancys Creek Marsh Area - WP-92 Location 605 = Nancys Creek Marsh Area - WP-72 (Removed from REMP per BSEP ODCM Rev. 38 Effective 8/1/17)

Location 606 = Nancys Creek Marsh Area - WP-74 (Removed from REMP per BSEP ODCM Rev. 38 Effective 8/1/17)

Location 607 = Nancys Creek Marsh Area - WP-76 Location 608 = Nancys Creek Marsh Area - WP-82 (Removed from REMP per BSEP ODCM Rev. 38 Effective 8/1/17)

Location 609 = Nancys Creek Marsh Area - WP-84 Location 610 = Nancys Creek Marsh Area - WP-88 (Removed from REMP per BSEP ODCM Rev. 38 Effective 8/1/17)

Appendix A - Page 4

Location 1065 = Waypoint Composite (70) of Locations 605, 606, 607 (Removed from REMP per BSEP ODCM Rev. 38 Effective 8/1/17)

Location 1066 = Waypoint Composite (80) of Locations 608, 609, 610 (Removed from REMP per BSEP ODCM Rev. 38 Effective 8/1/17)

Location 1067 = Waypoint Composite of Locations 494 and 604 (Removed from REMP per BSEP ODCM Rev. 38 Effective 8/1/17)

A.3 GROUND WATER Grab samples were collected quarterly and semiannually from ground water wells at ten locations. A tritium analysis was performed quarterly and a gamma analysis was performed semiannually on each sample. The samples were collected from the locations listed below.

Location 404 = Monitoring Well ESS-1B - 0.16 miles SW Location 407 = Monitoring Well ESS-13B - 0.06 miles ENE Location 409 = Monitoring Well ESS-17A - 0.65 miles NE Location 410 = Monitoring Well ESS-17B - 0.65 miles NE Location 418 = Monitoring Well ESS-21B - Near SDSP Location 423 = Monitoring Well ESS-24A - Near SDSP Location 424 = Monitoring Well ESS-24B - Near SDSP Location 426 = Monitoring Well ESS-25B - Near SDSP Location 429 = Monitoring Well ESS-27A - Near SDSP Location 612 = Monitoring Well ESS MWPA-118B - Near Intake Canal & Plant Stack Note: SDSP = Storm Drain Stabilization Pond A.4 BROADLEAF VEGETATION Monthly samples were collected at each of five locations during 2017. A gamma analysis was performed on each sample. The samples were collected from the locations listed below.

Location 800 = 0.7 miles NE - Intake Canal Location 801 = 0.8 miles SW - Discharge Canal Location 802 = 10.1 miles - location not specified (Control)

Location 803 = 0.6 miles SSE - Spoil Pond Location 804 = 0.7 miles S - Leonard Street plant exit adjacent to RR tracks Appendix A - Page 5

A.5 FISH and INVERTEBRATES Fish (free swimmers and bottom feeders) and Invertebrates (shell fish and/or benthic organisms) samples are collected semiannually from two locations (near the Atlantic Ocean discharge pipe at Caswell Beach and a control location in the Atlantic Ocean not influenced by plant operations) and annually from three locations on Nancys Creek (see Figure 2.1-5). A gamma analysis was performed on the edible portions of each sample. The samples were collected from the locations listed below.

Location 700 = 5.5 miles SSW - Atlantic Ocean @ discharge (free swimmers)

Location 701 = 5.5 miles SSW - Atlantic Ocean @ discharge (bottom feeders)

Location 702 = 5.5 miles SSW - Atlantic Ocean @ discharge (shellfish/ Invertebrates)

Location 703 = Atlantic Ocean; location not specified (free swimmer)

- (Control)

Location 704 = Atlantic Ocean; location not specified (bottom feeders) - (Control)

Location 705 = Atlantic Ocean; location not specified (shellfish/

Invertebrates)

Location 706 = Nancys Creek; location not specified (free swimmer)

Location 707 = Nancys Creek; location not specified (bottom feeders)

Location 708 = Nancys Creek; location not specified (shellfish/

Invertebrates)

A.6 SHORELINE SEDIMENT Semiannual samples were collected at one location (SS-500), while an annual sample was collected at another location (SS-501). A gamma analysis was performed on each sample following the drying and removal of rocks and clams.

If activity attributed to plant operations is detected in the annual shoreline sediment gamma analysis for SS-501, then the sample is analyzed for Hard-to-detect radionuclides (Fe-55 and Sr-89, 90) by a vendor laboratory (GEL) and the sample frequency is increased to semiannually. The samples were collected from the locations listed below.

Location 500 = 5.0 miles SSW - Discharge; Beach near Ocean Discharge (OD) pumps Location 501 = Nancys Creek, Adjacent to WP-55, Near Storm Drain Stabilization Pond Appendix A - Page 6

A.7 DIRECT GAMMA RADIATION (TLD)

Thermoluminescent dosimeters (TLD) were collected quarterly at forty-five locations and four quarterly ISFSI TLDs. A gamma exposure rate was determined for each TLD. TLD locations are listed in Table 2.1-C. The TLDs were placed as indicated below.

An inner ring of 24 TLDs, one in each meteorological sector in the general area of the site boundary.

An outer ring of 20 TLDs, one in each meteorological sector at 8 kilometers or greater from the site.

The remaining TLDs were placed in special interest areas such as population centers, residential areas, schools, and at one control location.

A.8 ANNUAL LAND USE CENSUS An Annual Land Use Census was conducted to identify within a distance of 5.0 miles (8 kilometers) from the plant, the nearest location from the site boundary in each of the sixteen meteorological sectors, the following:

The Nearest Residence The Nearest Garden greater than 50 square meters or 500 square feet, producing broadleaf vegetation The Nearest Milk-giving Animal (cow, goat, etc.)

The Annual Land Use Census must also identify (for elevated releases) within the three-mile (4.8 kilometer) radius of the plant (a garden census) for each of the 16 meteorological sectors for the following:

The location of all milk animals The location of all gardens of greater than 500 square feet (or 50 square meters), producing broadleaf vegetation.

The census was conducted during the growing season from June 2 through 29, 2017. Results are shown in Tables 3.8-A and 3.8-B. No changes were made to the sampling procedures during 2017 as a result of the 2017 BSEP census.

Appendix A - Page 7

APPENDIX B RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

OF RESULTS 2017 Appendix B - Page 1

BRUNSWICK STEAM ELECTRIC PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM DATA

SUMMARY

Brunswick Steam Electric Plant Docket Numbers: 50-324 and 325 Brunswick County, North Carolina Calendar Year: 2017 Location w/Highest Annual Mean(2)

Medium or Pathway Type and Lower Limit All Indicator Control Locations No. of Sampled or Measured Total No. of of Detection Locations Name, Distance, Mean(2)(3) Mean(2)(3) Non-Routine (Unit of Measurement) Measurements (LLD)(1) Mean(2)(3) and Direction Range(2) Range(2) Report Performed Range(2) Meas.

Loc. # 203 Loc. # 204 & 206 Air Particulate Gross Beta See Table 2.2-C 1.72E-2 (265/265) Southport Substation 1.77E-2 (53/53) 1.76E-2 (106/106) 0 (pCi/m3) 371(4)(9) 5.72E 3.37E-2 2.0 miles SSW 7.62E 3.37E-2 8.31E 3.32E-2 Gamma(5) See Table 2.2-C All less than LLD ----- ----- All less than LLD 0 35(9)

Air Radioiodine I-131 See Table 2.2-C All less than LLD ----- ----- All less than LLD 0 (pCi/m3) 371(4)(9)

Broadleaf Vegetation Gamma(5) See Table 2.2-C All less than LLD ----- ----- All less than LLD 0 (pCi/kg, wet) 60(4)

Fish and Invertebrates Gamma(5) See Table 2.2-C All less than LLD ----- ----- All less than LLD 0 (pCi/kg, wet) 15 Loc. # 501 Sediments -- Shoreline Gamma(5) See Table 2.2-C 1.13E+2 (1/4) Nancys Creek 1.13E+2 (1/2) No Control 0 (pCi/kg, dry) 4 Single Value adjacent to WP-55 Single Value Cs-137 near SDSP Hard-to-detects ----- All less than LLD ----- ----- No Control 0 (Fe-55, Ni-63, Sr-89/90) 4 Appendix B - Page 2

BRUNSWICK STEAM ELECTRIC PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM DATA

SUMMARY

(cont.)

Brunswick Steam Electric Plant Docket Numbers: 50-324 and 325 Brunswick County, North Carolina Calendar Year: 2017 Location w/Highest Annual Mean(2)

Medium or Pathway Type and Lower Limit All Indicator Control Locations No. of Sampled or Measured Total No. of of Detection Locations Name, Distance, Mean(2)(3) Mean(2)(3) Non-Routine (Unit of Measurement) Measurements (LLD)(1) Mean(2)(3) and Direction Range(2) Range(2) Report Performed Range(2) Meas.

Surface Water Gamma(5) See Table 2.2-C All less than LLD ----- ----- All less than LLD 0 (pCi/l) 194 Tritium 3,000(7) 8.99E+2 (28/412) Loc. # 494 1.33E+3 (3/35) All less than LLD 0 459 2.29E+2 - 5.60E+3 Nancys Creek 2.29E+2 - 3.45E+3 Marsh Area WP-106 Ground Water Gamma(5) See Table 2.2-C All less than LLD ----- ----- No Control 0 (pCi/l) 20 Tritium 3,000(7) 3.76E+2 (3/40) Loc. # 407 3.76E+2 (3/4) No Control 0 40 3.06E+2 - 4.28E+2 Monitoring Well 3.06E+2 - 4.28E+2 ESS-13B 0.06 miles ENE Loc. #81 Direct Radiation (TLD) TLD Readout ----- 1.01E+1 (173/173) Loc. # 24 1.46E+1 (4/4) 1.08E+1 (4/4) 0 (mR per std. quarter)(6) 177(4) 5.60E+0 - 1.64E+1 3.0 miles W 1.29E+1 - 1.63E+1 9.20E+0 - 1.20E+1 Direct Radiation ISFSI TLD Readout ----- 2.23E+1 (16/16) Loc. # 85 2.57E+1 (4/4) No Control 0 (TLD - ISFSI) 16 1.67E+1 - 2.90E+1 SE Corner of ISFSI 2.43E+1 - 2.78E+1 0.09 miles ENE (mR per std. quarter)(6)

Appendix B - Page 3

Footnotes to Appendix B

1. The Lower Limit of Detection (LLD) is the smallest concentration of radioactive material in a sample that will yield a net count above system background which will be detected with 95 percent probability and with only 5 percent probability of falsely concluding that a blank observation represents a "real" signal. Due to counting statistics and varying volumes, occasionally lower LLDs are achieved. Refer to Section 2.3.2 for an explanation of how LLD values were derived.

2. Mean and range are based on detectable measurements only.

3. The fractions of all samples with detectable activities at specific locations are indicated in parentheses.

4. Missing samples or surveillances are discussed in Appendix C or Appendix D.

5. Summary of gamma analysis results in this report does not include the following naturally occurring isotopes since most environmental samples contained some or all of these: Be-7, K-40, Tl-208, Pb-212, Bi-214, Pb-214, and Ra-226.

6. TLD exposure is reported in milliroentgen (mR) per standard quarter (91 days).

7. Tritium Lower Limit of Detection (LLD) is approximately 2.00E+2 pCi/L for samples that typically demonstrate activity less than the LLD.

8. The tritium reporting limit for Fish per General Engineering Laboratories (GEL) is 4.0E+3 pCi/kilogram.

9. Gamma filter composite calendar reconciliation period, 2017 (NCR # 02174810).

Appendix B - Page 4

APPENDIX C SAMPLING DEVIATIONS UNAVAILABLE ANALYSES Appendix C - Page 1

APPENDIX C BRUNSWICK NUCLEAR PLANT SAMPLING DEVIATIONS & UNAVAILABLE ANALYSES DEVIATIONS & UNAVAILABLE REASON CODES BF Blown Fuse OT Other SM Motor / Rotor Seized CN Construction PI Power Interrupt SU Seasonal Unavailability FZ Sample Frozen PM Preventative Maintenance TF Torn Filter IV Insufficient Volume PO Power Outage VN Vandalism IW Inclement Weather PS Power out of service / Undergoing Repair LC Line Clog to Sampler SL Sample Loss / Lost due to Lab Accident C.1 SAMPLING DEVIATIONS Air Particulate and Air Radioiodines REMP weekly air samples (Air Particulate (AP) or Air Radioiodine (AR)) that experience any downtime during a surveillance period are reported as a Deviation and classified as a Sampling Deviation. The sample is counted and the data reported; whereas, a Deviation with no available sample is classified as an Unavailable Analyses and does not have any data reported. The BSEP REMP air samplers operated for a total of 99.90% availability in 2017.

Scheduled Description & Corrective Location Collection Dates Code Action to Prevent Recurrence Action 202 1/03/17 - 1/10/17 PI 5.4 hrs. downtime due to power interruption caused by work NCR # 02089971 on a transformer substation.

206 2/21/17 - 2/28/17 PI 2.9 hrs. downtime due to power interruption caused by a NCR # 02103422 blown fuse on the air sampler.

202 2/28/17 - 3/07/17 PI 2.5 hrs. downtime due to power interruption caused by blown NCR # 02104511 fuse on the air sampler.

202 2/28/17 - 3/07/17 PI 24.8 hrs. downtime due to substation work (planned work, NCR # 02105184 but took longer than anticipated).

203 5/23/17 - 5/30/17 PI 1.2 hrs. downtime due to power interruption due to severe NCR # 02127499 thunderstorms in the area.

201 8/15/17 - 8/22/17 PS No noted downtime. The air sampler pump was running, but NCR # 02145478 sampler had no flow. Motor continued to run. Sampler replaced.

206 10/24/17 - 10/31/17 PI 0.80 hrs. downtime due to power interruption due to NCR # 02162766 thunderstorms in the area.

205 12/05/17 - 12/12/17 PI 20.5 hrs. downtime due to power interruption due to a tripped NCR # 02171576 breaker.

205 12/12/17 - 12/19/17 PI 3.9 hrs. downtime due to power interruption due to a tripped NCR # 02171929 breaker.

Appendix C - Page 2

C.2 UNAVAILABLE ANALYSES TLD Scheduled Description & Corrective Location Collection Dates Code Action to Prevent Recurrence Action 4/4/17 - 7/7/17 The TLD was located on a power pole that was removed when 30 nd OT power was run underground. The area was searched, but the NCR # 02135452 (2 Qtr. 2017) TLD could not be located.

7/7/17 - 10/4/17 Power Pole that the TLD was located on was painted. The 22 OT TLD was found on the ground beside the power pole it had NCR # 02155997 (3rd Qtr. 2017) been attached to. The TLD was not in its designated location -

TLD not valid.

7/7/17 - 10/4/17 The TLD was missing from its designated location, a power 76 OT pole. The power pole had been painted. The area was NCR # 02155715 (3rd Qtr. 2017) searched, but the TLD was not found.

Appendix C - Page 3

APPENDIX D ANALYTICAL DEVIATIONS Appendix D - Page 1

APPENDIX D BRUNSWICK NUCLEAR PLANT ANALYTICAL DEVIATIONS While BSEP was analyzing weekly waterborne surface water composite samples per BSEP ODCM Revision 37 at the BSEP Bio-Lab, it was identified that three surface water composite samples (see table below) collected per BSEP ODCM Table 7.3.15-1 were not analyzed by BSEP in the required timeframe stated in the BSEP ODCM (NCR #

02128415). This occurrence was due to equipment malfunctions. The instrument needed to analyze these samples at the BSEP Bio-Lab was out of service during this timeframe and unable to perform the required gamma analysis. This resulted in the samples collected on 5/23/17 exceeding the stated time limit for the weekly gamma analysis (7 days +/- 25% [1.75 days] = 8.75 days). The samples typically analyzed at the BSEP Bio-Lab are being analyzed at the BSEP RCA Chemistry Lab until the malfunctioning equipment in the BSEP Bio-Lab is repaired. This is not a reportable event per verification with BSEP Regulatory Affairs.

Sample ODCM - Sample Point Description Collection Analysis Manager ID Date Date 444197 Waypoint Composite (70)(1) - B1065 5/23/17 6/1/17 444198 Waypoint Composite (80)(2) - B1066 5/23/17 6/1/17 444199 Waypoint Composite(3) - B1067 5/23/17 6/5/17 (1) Waypoint Composite (70) - (B1065) of ODCM samples #605 (Nancy's Creek Marsh Area - WP-72), sample #606 (Nancy's Creek Marsh Area - WP-74), and sample #607 (Nancy's Creek Marsh Area - WP-76).

(2) Waypoint Composite (80) - (B1066) of ODCM samples #608 (Nancy's Creek Marsh Area - WP-82), sample #609 (Nancy's Creek Marsh Area - WP-84), and sample #610 (Nancy's Creek Marsh Area - WP-88).

(3) Waypoint Composite - (B1067) of ODCM samples #494 (Nancy's Creek Marsh Area - WP-106) and sample #604 (Nancy's Creek Marsh Area - WP-92).

This sampling program is implemented to fulfill sampling requirements described in the Brunswick Steam Electric Plant (BNP) OFF-SITE DOSE CALCULATION MANUAL (ODCM) Section 4.0 (Radiological Environmental Monitoring Program); Sections 7.3, 7.3.15 (ODCM Specifications for Radiological Environmental Monitoring Program), and Table 7.3.15-1. Sampling program deviations such as these are documented in the BSEP Annual Radiological Environmental Operating Report (AREOR) each year in Appendix D - Analytical Deviations (NCR # 02128415).

Appendix D - Page 2

APPENDIX E RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM RESULTS 2017 This appendix includes sample analysis report summaries and supportive data generated from each sample medium for 2017.

Appendix E - Page 1

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 432162 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.84E-02 5.13E-03 6.89E-03 Sample ID: 432867 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.63E-02 4.61E-03 6.34E-03 Sample ID: 433267 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.33E-02 4.80E-03 6.83E-03 Sample ID: 433684 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.14E-02 3.99E-03 5.68E-03 Sample ID: 434419 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.02E-02 5.16E-03 6.71E-03 Sample ID: 435063 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.98E-02 4.89E-03 6.09E-03 Sample ID: 435773 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.46E-02 4.41E-03 6.14E-03 Sample ID: 436223 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.23E-02 5.00E-03 7.39E-03 Sample ID: 436674 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.04E-02 4.68E-03 6.99E-03 Sample ID: 437535 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.63E-02 4.39E-03 5.90E-03 Sample ID: 438265 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.20E-02 4.69E-03 6.86E-03 Sample ID: 438768 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.78E-02 4.36E-03 5.63E-03 Sample ID: 439111 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.31E-02 5.01E-03 6.09E-03 Sample ID: 439118 Sample Dates: 12/27/2016 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.10E-03 0.00E+00 1.10E-03 Cs-137 <8.72E-04 0.00E+00 8.72E-04 Be-7 1.57E-01 3.13E-02 1.85E-02 K-40 1.28E-02 8.59E-03 3.85E-03 Sample ID: 439964 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.12E-02 3.91E-03 5.59E-03 Sample ID: 440562 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.62E-02 4.60E-03 6.04E-03 Sample ID: 441376 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.03E-02 5.12E-03 6.73E-03 Sample ID: 441821 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.66E-02 3.94E-03 4.92E-03 Sample ID: 442249 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.30E-02 4.64E-03 6.64E-03 Sample ID: 442835 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.86E-02 4.83E-03 6.39E-03 Sample ID: 443263 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.29E-02 4.08E-03 4.33E-03 Sample ID: 443821 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.88E-02 4.72E-03 6.04E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 2 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 444215 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.53E-02 4.08E-03 5.47E-03 Sample ID: 445285 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.87E-02 4.93E-03 6.53E-03 Sample ID: 446284 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.05E-02 3.79E-03 5.47E-03 Sample ID: 446788 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.53E-02 3.87E-03 4.97E-03 Sample ID: 447114 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.20E-02 4.33E-03 6.14E-03 Sample ID: 447121 Sample Dates: 3/28/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.53E-03 0.00E+00 1.53E-03 Cs-137 <7.48E-04 0.00E+00 7.48E-04 Be-7 1.60E-01 3.27E-02 2.19E-02 K-40 <1.85E-02 0.00E+00 1.85E-02 Sample ID: 447767 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.37E-02 4.92E-03 7.20E-03 Sample ID: 448231 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.56E-02 4.44E-03 5.91E-03 Sample ID: 448857 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 7.48E-03 4.05E-03 6.25E-03 Sample ID: 449173 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.43E-02 4.45E-03 6.11E-03 Sample ID: 449912 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.50E-02 4.16E-03 5.66E-03 Sample ID: 450157 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.34E-02 3.89E-03 5.28E-03 Sample ID: 450690 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.04E-02 3.66E-03 5.21E-03 Sample ID: 451141 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.59E-02 3.81E-03 4.78E-03 Sample ID: 451503 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.49E-02 4.53E-03 6.14E-03 Sample ID: 452307 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.46E-02 4.85E-03 6.92E-03 Sample ID: 452750 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.73E-02 4.13E-03 5.26E-03 Sample ID: 453396 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.00E-02 4.42E-03 5.59E-03 Sample ID: 454155 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.27E-02 4.62E-03 5.75E-03 Sample ID: 454162 Sample Dates: 6/27/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <2.31E-03 0.00E+00 2.31E-03 Cs-137 <2.66E-03 0.00E+00 2.66E-03 Be-7 1.23E-01 4.59E-02 4.58E-02 K-40 <6.00E-02 0.00E+00 6.00E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 3 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 455022 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.93E-02 4.49E-03 5.75E-03 Sample ID: 455377 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.55E-02 4.61E-03 6.30E-03 Sample ID: 455994 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.55E-03 3.87E-03 5.51E-03 Sample ID: 461378 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.60E-02 4.62E-03 6.20E-03 Sample ID: 461924 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.90E-02 4.38E-03 5.63E-03 Sample ID: 462560 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.28E-02 4.30E-03 4.89E-03 Sample ID: 463044 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.02E-02 4.87E-03 6.16E-03 Sample ID: 463468 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.76E-02 5.26E-03 6.01E-03 Sample ID: 464127 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.62E-02 5.50E-03 6.74E-03 Sample ID: 464657 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.80E-02 5.36E-03 6.33E-03 Sample ID: 464918 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.80E-02 5.30E-03 7.38E-03 Sample ID: 465173 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.61E-02 5.47E-03 6.73E-03 Sample ID: 465548 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.67E-02 4.93E-03 5.35E-03 Sample ID: 465555 Sample Dates: 9/26/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <3.14E-03 0.00E+00 3.14E-03 Cs-137 <3.37E-03 0.00E+00 3.37E-03 Be-7 1.16E-01 5.00E-02 5.80E-02 K-40 <4.33E-02 0.00E+00 4.33E-02 Sample ID: 465935 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA Beta 3.25E-02 5.94E-03 6.95E-03 Cs-134 <3.11E-02 0.00E+00 3.11E-02 Cs-137 <2.42E-02 0.00E+00 2.42E-02 Be-7 2.59E-01 1.73E-01 2.52E-01 K-40 <4.08E-01 0.00E+00 4.08E-01 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 432163 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.70E-02 5.02E-03 6.84E-03 Sample ID: 432868 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.41E-02 4.45E-03 6.29E-03 Sample ID: 433268 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.52E-02 4.90E-03 6.78E-03 Sample ID: 433685 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.36E-02 4.12E-03 5.65E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 4 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 201 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 434420 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.20E-02 5.24E-03 6.69E-03 Sample ID: 435064 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.42E-02 5.17E-03 6.07E-03 Sample ID: 435774 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.62E-02 4.48E-03 6.10E-03 Sample ID: 436224 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.36E-02 5.05E-03 7.34E-03 Sample ID: 436675 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.15E-02 4.73E-03 6.96E-03 Sample ID: 437536 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.42E-02 4.27E-03 5.90E-03 Sample ID: 438266 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.01E-02 4.53E-03 6.78E-03 Sample ID: 438769 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.65E-02 4.20E-03 5.49E-03 Sample ID: 439112 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.37E-02 5.06E-03 6.11E-03 Sample ID: 439119 Sample Dates: 12/27/2016 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.00E-03 0.00E+00 1.00E-03 Cs-137 <1.12E-03 0.00E+00 1.12E-03 Be-7 1.42E-01 3.20E-02 2.58E-02 K-40 <2.51E-02 0.00E+00 2.51E-02 Sample ID: 439965 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.96E-03 3.80E-03 5.65E-03 Sample ID: 440563 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.36E-02 4.42E-03 6.05E-03 Sample ID: 441377 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.84E-02 5.07E-03 6.83E-03 Sample ID: 441822 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.45E-02 3.88E-03 5.03E-03 Sample ID: 442250 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.90E-03 4.56E-03 6.86E-03 Sample ID: 442836 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.63E-02 4.77E-03 6.52E-03 Sample ID: 443264 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.78E-02 4.45E-03 4.44E-03 Sample ID: 443822 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.13E-02 5.01E-03 6.26E-03 Sample ID: 444216 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.38E-02 4.09E-03 5.66E-03 Sample ID: 445286 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.52E-02 4.85E-03 6.76E-03 Sample ID: 446285 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.05E-03 3.73E-03 5.65E-03 Sample ID: 446789 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.09E-02 3.69E-03 5.15E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 5 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 201 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 447115 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.35E-02 4.56E-03 6.37E-03 Sample ID: 447122 Sample Dates: 3/28/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.25E-03 0.00E+00 1.25E-03 Cs-137 <5.55E-04 0.00E+00 5.55E-04 Be-7 1.20E-01 2.59E-02 1.72E-02 K-40 <2.34E-02 0.00E+00 2.34E-02 Sample ID: 447768 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.67E-02 5.21E-03 7.40E-03 Sample ID: 448232 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.44E-02 4.56E-03 6.23E-03 Sample ID: 448858 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.92E-03 4.29E-03 6.48E-03 Sample ID: 449174 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 6.34E-03 4.04E-03 6.35E-03 Sample ID: 449913 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.23E-02 4.12E-03 5.86E-03 Sample ID: 450158 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.32E-02 4.00E-03 5.47E-03 Sample ID: 450691 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.34E-03 3.70E-03 5.41E-03 Sample ID: 451142 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.38E-02 5.14E-03 7.33E-03 Sample ID: 451504 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.43E-02 4.56E-03 6.28E-03 Sample ID: 452308 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.39E-02 4.86E-03 7.00E-03 Sample ID: 452751 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.55E-02 4.05E-03 5.31E-03 Sample ID: 453397 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.86E-02 4.36E-03 5.65E-03 Sample ID: 454156 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.21E-02 4.62E-03 5.80E-03 Sample ID: 454163 Sample Dates: 6/27/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <2.51E-03 0.00E+00 2.51E-03 Cs-137 <3.83E-03 0.00E+00 3.83E-03 Be-7 8.46E-02 4.23E-02 5.07E-02 K-40 <5.04E-02 0.00E+00 5.04E-02 Sample ID: 455023 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.73E-02 4.26E-03 5.56E-03 Sample ID: 455378 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.72E-02 4.75E-03 6.37E-03 Sample ID: 455995 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.25E-02 4.13E-03 5.59E-03 Sample ID: 461379 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.37E-02 5.14E-03 6.29E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 6 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 201 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 461925 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.15E-02 3.97E-03 5.68E-03 Sample ID: 462561 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.42E-02 4.42E-03 4.98E-03 Sample ID: 463045 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.84E-02 4.78E-03 6.20E-03 Sample ID: 463469 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.53E-02 5.15E-03 6.06E-03 Sample ID: 464128 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.52E-02 5.47E-03 6.80E-03 Sample ID: 464658 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.89E-02 5.46E-03 6.42E-03 Sample ID: 464919 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.73E-02 5.33E-03 7.50E-03 Sample ID: 465174 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.87E-02 5.61E-03 6.75E-03 Sample ID: 465549 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.00E-02 5.16E-03 5.40E-03 Sample ID: 465556 Sample Dates: 9/26/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <4.03E-03 0.00E+00 4.03E-03 Cs-137 <2.64E-03 0.00E+00 2.64E-03 Be-7 1.17E-01 5.00E-02 5.99E-02 K-40 <4.38E-02 0.00E+00 4.38E-02 Sample ID: 465936 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA Beta 2.80E-02 5.72E-03 6.95E-03 Cs-134 <2.37E-02 0.00E+00 2.37E-02 Cs-137 <2.61E-02 0.00E+00 2.61E-02 Be-7 2.26E-01 1.47E-01 2.09E-01 K-40 <4.87E-01 0.00E+00 4.87E-01 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 432164 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.28E-02 4.81E-03 6.95E-03 Sample ID: 432869 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.30E-02 4.57E-03 6.62E-03 Sample ID: 433269 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.84E-02 5.15E-03 6.86E-03 Sample ID: 433686 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.60E-02 4.29E-03 5.71E-03 Sample ID: 434421 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.66E-02 4.97E-03 6.77E-03 Sample ID: 435065 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.63E-02 5.35E-03 6.16E-03 Sample ID: 435775 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.91E-02 4.71E-03 6.19E-03 Sample ID: 436225 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.52E-02 5.23E-03 7.46E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 7 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 202 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 436676 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.59E-02 5.05E-03 7.02E-03 Sample ID: 437537 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.61E-02 4.90E-03 6.76E-03 Sample ID: 438267 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.01E-02 4.52E-03 6.79E-03 Sample ID: 438770 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.89E-02 4.38E-03 5.57E-03 Sample ID: 439113 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.05E-02 4.88E-03 6.12E-03 Sample ID: 439120 Sample Dates: 12/27/2016 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <9.38E-04 0.00E+00 9.38E-04 Cs-137 <9.62E-04 0.00E+00 9.62E-04 Be-7 1.83E-01 3.40E-02 2.14E-02 K-40 1.94E-02 1.38E-02 1.83E-02 Sample ID: 439966 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.03E-02 3.88E-03 5.64E-03 Sample ID: 440564 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.56E-02 4.57E-03 6.06E-03 Sample ID: 441378 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.11E-02 5.21E-03 6.79E-03 Sample ID: 441823 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.68E-02 3.99E-03 5.00E-03 Sample ID: 442251 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.16E-02 4.62E-03 6.79E-03 Sample ID: 442837 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.52E-02 4.70E-03 6.50E-03 Sample ID: 443265 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.53E-02 4.29E-03 4.43E-03 Sample ID: 443823 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.16E-02 4.97E-03 6.17E-03 Sample ID: 444217 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.73E-02 4.25E-03 5.59E-03 Sample ID: 445287 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.63E-02 4.83E-03 6.61E-03 Sample ID: 446286 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.11E-03 3.82E-03 5.67E-03 Sample ID: 446790 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.58E-02 3.96E-03 5.08E-03 Sample ID: 447116 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.68E-02 4.71E-03 6.28E-03 Sample ID: 447123 Sample Dates: 3/28/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.19E-03 0.00E+00 1.19E-03 Cs-137 <1.03E-03 0.00E+00 1.03E-03 Be-7 1.35E-01 2.89E-02 2.12E-02 K-40 2.32E-02 1.44E-02 1.78E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 8 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 202 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 447769 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.77E-03 4.74E-03 7.39E-03 Sample ID: 448233 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.30E-02 4.37E-03 6.06E-03 Sample ID: 448859 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.32E-03 4.26E-03 6.40E-03 Sample ID: 449175 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 5.72E-03 2.14E-03 3.08E-03 Sample ID: 449914 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.31E-02 4.12E-03 5.79E-03 Sample ID: 450159 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.32E-02 3.94E-03 5.40E-03 Sample ID: 450692 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.87E-03 3.63E-03 5.33E-03 Sample ID: 451143 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.57E-02 3.87E-03 4.91E-03 Sample ID: 451505 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.60E-02 4.68E-03 6.30E-03 Sample ID: 452309 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.15E-02 4.73E-03 7.05E-03 Sample ID: 452752 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.99E-02 4.35E-03 5.38E-03 Sample ID: 453398 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.83E-02 4.39E-03 5.72E-03 Sample ID: 454157 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.31E-02 4.71E-03 5.87E-03 Sample ID: 454164 Sample Dates: 6/27/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <3.00E-03 0.00E+00 3.00E-03 Cs-137 <3.22E-03 0.00E+00 3.22E-03 Be-7 3.34E-02 4.99E-02 8.33E-02 K-40 <4.82E-02 0.00E+00 4.82E-02 Sample ID: 455024 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.70E-02 4.31E-03 5.66E-03 Sample ID: 455379 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.41E-02 4.60E-03 6.43E-03 Sample ID: 455996 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.13E-02 4.08E-03 5.65E-03 Sample ID: 461380 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.91E-02 4.88E-03 6.34E-03 Sample ID: 461926 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.40E-02 4.17E-03 5.78E-03 Sample ID: 462562 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.36E-02 4.41E-03 5.02E-03 Sample ID: 463046 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.98E-02 4.92E-03 6.29E-03 Sample ID: 463470 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.43E-02 5.15E-03 6.15E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 9 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 202 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 464129 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.69E-02 5.63E-03 6.88E-03 Sample ID: 464659 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.17E-02 5.64E-03 6.47E-03 Sample ID: 464920 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.78E-02 5.39E-03 7.56E-03 Sample ID: 465175 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.24E-02 5.90E-03 6.88E-03 Sample ID: 465550 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.07E-02 5.26E-03 5.48E-03 Sample ID: 465557 Sample Dates: 9/26/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <2.10E-03 0.00E+00 2.10E-03 Cs-137 <2.81E-03 0.00E+00 2.81E-03 Be-7 1.14E-01 4.90E-02 5.67E-02 K-40 5.96E-02 2.93E-02 9.50E-03 Sample ID: 465937 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA Beta 2.44E-02 5.58E-03 7.07E-03 Cs-134 <3.43E-02 0.00E+00 3.43E-02 Cs-137 <2.83E-02 0.00E+00 2.83E-02 Be-7 <2.70E-01 0.00E+00 2.70E-01 K-40 4.06E-01 2.13E-01 2.00E-01 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 432165 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.51E-02 5.08E-03 7.13E-03 Sample ID: 432870 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.66E-02 4.79E-03 6.64E-03 Sample ID: 433270 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.70E-02 4.94E-03 6.64E-03 Sample ID: 433687 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.41E-02 4.05E-03 5.49E-03 Sample ID: 434422 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.15E-02 5.56E-03 7.26E-03 Sample ID: 435066 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.37E-02 6.41E-03 7.16E-03 Sample ID: 435776 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.43E-02 4.34E-03 6.05E-03 Sample ID: 436226 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.37E-02 5.01E-03 7.25E-03 Sample ID: 436677 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.83E-02 5.20E-03 7.02E-03 Sample ID: 437538 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.53E-02 4.23E-03 5.71E-03 Sample ID: 438268 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.06E-02 4.60E-03 6.85E-03 Sample ID: 438771 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.12E-02 4.54E-03 5.60E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 10 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 203 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 439114 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.57E-02 5.22E-03 6.18E-03 Sample ID: 439121 Sample Dates: 12/27/2016 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <9.85E-04 0.00E+00 9.85E-04 Cs-137 <1.18E-03 0.00E+00 1.18E-03 Be-7 1.79E-01 3.50E-02 2.42E-02 K-40 <2.47E-02 0.00E+00 2.47E-02 Sample ID: 439967 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.20E-02 4.01E-03 5.69E-03 Sample ID: 440565 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.45E-02 4.53E-03 6.12E-03 Sample ID: 441379 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.78E-02 5.06E-03 6.87E-03 Sample ID: 441824 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.61E-02 3.97E-03 5.05E-03 Sample ID: 442252 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Beta 7.62E-03 4.40E-03 6.83E-03 Sample ID: 442838 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.70E-02 4.84E-03 6.56E-03 Sample ID: 443266 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.56E-02 4.33E-03 4.46E-03 Sample ID: 443824 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.17E-02 5.02E-03 6.23E-03 Sample ID: 444218 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.43E-02 4.13E-03 5.67E-03 Sample ID: 445288 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.57E-02 4.87E-03 6.75E-03 Sample ID: 446287 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.26E-02 4.02E-03 5.65E-03 Sample ID: 446791 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.26E-02 3.77E-03 5.12E-03 Sample ID: 447117 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.29E-02 4.49E-03 6.33E-03 Sample ID: 447124 Sample Dates: 3/28/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.40E-03 0.00E+00 1.40E-03 Cs-137 <1.23E-03 0.00E+00 1.23E-03 Be-7 1.16E-01 2.90E-02 3.03E-02 K-40 <2.11E-02 0.00E+00 2.11E-02 Sample ID: 447770 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.47E-02 5.11E-03 7.43E-03 Sample ID: 448234 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.54E-02 4.55E-03 6.09E-03 Sample ID: 448860 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.19E-03 4.21E-03 6.43E-03 Sample ID: 449176 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.33E-02 4.48E-03 6.28E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 11 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 203 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 449915 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.36E-02 4.17E-03 5.82E-03 Sample ID: 450160 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.54E-02 4.10E-03 5.42E-03 Sample ID: 450693 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.18E-03 3.66E-03 5.36E-03 Sample ID: 451144 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.29E-02 3.72E-03 4.94E-03 Sample ID: 451506 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.76E-02 4.79E-03 6.31E-03 Sample ID: 452310 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.24E-02 4.82E-03 7.12E-03 Sample ID: 452753 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.70E-02 4.19E-03 5.38E-03 Sample ID: 453399 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.66E-02 4.32E-03 5.74E-03 Sample ID: 454158 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.20E-02 4.67E-03 5.89E-03 Sample ID: 454165 Sample Dates: 6/27/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <3.21E-03 0.00E+00 3.21E-03 Cs-137 <2.34E-03 0.00E+00 2.34E-03 Be-7 1.86E-01 5.73E-02 5.08E-02 K-40 <6.86E-02 0.00E+00 6.86E-02 Sample ID: 455025 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.38E-02 4.11E-03 5.67E-03 Sample ID: 455380 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.49E-03 4.31E-03 6.45E-03 Sample ID: 455997 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.49E-02 4.34E-03 5.67E-03 Sample ID: 461381 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.01E-02 4.97E-03 6.37E-03 Sample ID: 461927 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.93E-02 4.48E-03 5.79E-03 Sample ID: 462563 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.49E-02 4.51E-03 5.06E-03 Sample ID: 463047 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.08E-02 5.00E-03 6.31E-03 Sample ID: 463471 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.23E-02 5.04E-03 6.16E-03 Sample ID: 464130 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.86E-02 5.73E-03 6.90E-03 Sample ID: 464660 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.23E-02 5.70E-03 6.51E-03 Sample ID: 464921 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.29E-02 5.69E-03 7.58E-03 Sample ID: 465176 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.24E-02 5.91E-03 6.89E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 12 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 203 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 465551 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.59E-02 4.97E-03 5.49E-03 Sample ID: 465558 Sample Dates: 9/26/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <4.05E-03 0.00E+00 4.05E-03 Cs-137 <3.10E-03 0.00E+00 3.10E-03 Be-7 1.75E-01 6.00E-02 6.70E-02 K-40 <4.74E-02 0.00E+00 4.74E-02 Sample ID: 465938 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA Beta 2.30E-02 5.49E-03 7.05E-03 Cs-134 <2.45E-02 0.00E+00 2.45E-02 Cs-137 <2.09E-02 0.00E+00 2.09E-02 Be-7 <2.40E-01 0.00E+00 2.40E-01 K-40 <3.61E-01 0.00E+00 3.61E-01 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 432166 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.63E-02 5.10E-03 7.06E-03 Sample ID: 432871 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.52E-02 4.59E-03 6.43E-03 Sample ID: 433271 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.51E-02 4.95E-03 6.87E-03 Sample ID: 433688 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.37E-02 4.19E-03 5.76E-03 Sample ID: 434423 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.70E-02 5.02E-03 6.83E-03 Sample ID: 435067 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.73E-02 5.42E-03 6.18E-03 Sample ID: 435777 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.31E-02 4.37E-03 6.22E-03 Sample ID: 436227 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.75E-02 5.37E-03 7.48E-03 Sample ID: 436678 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.10E-02 4.75E-03 7.07E-03 Sample ID: 437539 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.75E-02 4.35E-03 5.66E-03 Sample ID: 438269 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.18E-02 4.65E-03 6.82E-03 Sample ID: 438772 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.17E-02 4.53E-03 5.54E-03 Sample ID: 439115 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.20E-02 4.97E-03 6.14E-03 Sample ID: 439122 Sample Dates: 12/27/2016 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.28E-03 0.00E+00 1.28E-03 Cs-137 <8.32E-04 0.00E+00 8.32E-04 Be-7 1.64E-01 3.12E-02 1.87E-02 K-40 2.03E-02 1.20E-02 1.23E-02 Sample ID: 439968 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.36E-03 3.77E-03 5.66E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 13 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 204 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 440566 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.56E-02 4.54E-03 6.04E-03 Sample ID: 441380 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.37E-02 5.36E-03 6.81E-03 Sample ID: 441825 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.26E-02 3.72E-03 5.01E-03 Sample ID: 442253 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.21E-02 4.65E-03 6.77E-03 Sample ID: 442839 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.66E-02 4.82E-03 6.57E-03 Sample ID: 443267 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.46E-02 4.23E-03 4.40E-03 Sample ID: 443825 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.46E-02 5.13E-03 6.13E-03 Sample ID: 444219 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.40E-02 4.11E-03 5.64E-03 Sample ID: 445289 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.72E-02 4.93E-03 6.69E-03 Sample ID: 446288 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.19E-02 3.97E-03 5.64E-03 Sample ID: 446792 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.49E-02 3.89E-03 5.05E-03 Sample ID: 447118 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.24E-02 4.45E-03 6.31E-03 Sample ID: 447125 Sample Dates: 3/28/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.22E-03 0.00E+00 1.22E-03 Cs-137 <1.10E-03 0.00E+00 1.10E-03 Be-7 1.32E-01 2.76E-02 1.93E-02 K-40 <2.63E-02 0.00E+00 2.63E-02 Sample ID: 447771 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.17E-02 4.91E-03 7.38E-03 Sample ID: 448235 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.22E-02 4.33E-03 6.10E-03 Sample ID: 448861 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.02E-02 4.32E-03 6.40E-03 Sample ID: 449177 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.72E-02 4.70E-03 6.25E-03 Sample ID: 449916 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.42E-02 4.18E-03 5.77E-03 Sample ID: 450161 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.59E-02 4.10E-03 5.40E-03 Sample ID: 450694 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.06E-02 3.72E-03 5.31E-03 Sample ID: 451145 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.02E-02 4.14E-03 4.90E-03 Sample ID: 451507 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.47E-02 4.57E-03 6.24E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 14 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 204 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 452311 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.03E-02 4.67E-03 7.07E-03 Sample ID: 452754 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.64E-02 4.14E-03 5.35E-03 Sample ID: 453400 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.72E-02 4.30E-03 5.66E-03 Sample ID: 454159 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.01E-02 4.52E-03 5.82E-03 Sample ID: 454166 Sample Dates: 6/27/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <3.65E-03 0.00E+00 3.65E-03 Cs-137 <3.36E-03 0.00E+00 3.36E-03 Be-7 1.37E-01 5.44E-02 6.35E-02 K-40 2.71E-02 2.25E-02 2.92E-02 Sample ID: 455026 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.88E-02 4.37E-03 5.59E-03 Sample ID: 455381 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.50E-03 4.28E-03 6.40E-03 Sample ID: 455998 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.17E-02 4.09E-03 5.62E-03 Sample ID: 461382 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.12E-02 4.98E-03 6.29E-03 Sample ID: 461928 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.80E-02 4.40E-03 5.76E-03 Sample ID: 462564 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.42E-02 4.44E-03 4.98E-03 Sample ID: 463048 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.34E-02 4.46E-03 6.20E-03 Sample ID: 463472 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.86E-02 5.37E-03 6.10E-03 Sample ID: 464131 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.46E-02 5.45E-03 6.82E-03 Sample ID: 464661 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.31E-02 5.77E-03 6.56E-03 Sample ID: 464922 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.28E-02 5.58E-03 7.40E-03 Sample ID: 465177 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.65E-02 5.53E-03 6.80E-03 Sample ID: 465552 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.64E-02 5.01E-03 5.50E-03 Sample ID: 465559 Sample Dates: 9/26/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <2.41E-03 0.00E+00 2.41E-03 Cs-137 <2.99E-03 0.00E+00 2.99E-03 Be-7 1.28E-01 4.75E-02 4.94E-02 K-40 <4.83E-02 0.00E+00 4.83E-02 Sample ID: 465939 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA Beta 3.03E-02 5.79E-03 6.86E-03 Cs-134 <2.62E-02 0.00E+00 2.62E-02 Cs-137 <2.12E-02 0.00E+00 2.12E-02 Be-7 <2.45E-01 0.00E+00 2.45E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 15 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 204 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 465939 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA K-40 <4.14E-01 0.00E+00 4.14E-01 Sample Point 205 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 432167 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.75E-02 4.98E-03 6.71E-03 Sample ID: 432872 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.65E-02 4.52E-03 6.18E-03 Sample ID: 433272 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.16E-02 4.59E-03 6.65E-03 Sample ID: 433689 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.30E-02 4.01E-03 5.54E-03 Sample ID: 434424 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.55E-02 4.76E-03 6.54E-03 Sample ID: 435068 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.45E-02 5.14E-03 5.99E-03 Sample ID: 435778 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.60E-02 4.43E-03 6.03E-03 Sample ID: 436228 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.50E-02 5.11E-03 7.28E-03 Sample ID: 436679 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.38E-02 4.83E-03 6.88E-03 Sample ID: 437540 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.77E-02 4.39E-03 5.75E-03 Sample ID: 438270 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.15E-02 4.70E-03 6.91E-03 Sample ID: 438773 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.06E-02 4.54E-03 5.67E-03 Sample ID: 439116 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.16E-02 5.01E-03 6.23E-03 Sample ID: 439123 Sample Dates: 12/27/2016 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.26E-03 0.00E+00 1.26E-03 Cs-137 <1.00E-03 0.00E+00 1.00E-03 Be-7 1.71E-01 3.09E-02 1.13E-02 K-40 <2.46E-02 0.00E+00 2.46E-02 Sample ID: 439969 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.17E-02 4.03E-03 5.75E-03 Sample ID: 440567 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.43E-02 4.55E-03 6.17E-03 Sample ID: 441381 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.75E-02 5.09E-03 6.93E-03 Sample ID: 441826 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.50E-02 3.95E-03 5.10E-03 Sample ID: 442254 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.79E-03 4.60E-03 6.94E-03 Sample ID: 442840 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.76E-02 4.93E-03 6.66E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 16 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 205 Sample Point 205 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 443268 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.71E-02 4.46E-03 4.56E-03 Sample ID: 443826 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.79E-02 4.86E-03 6.36E-03 Sample ID: 444220 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.27E-02 4.09E-03 5.76E-03 Sample ID: 445290 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.92E-02 5.14E-03 6.83E-03 Sample ID: 446289 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.93E-03 3.90E-03 5.86E-03 Sample ID: 446793 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.28E-02 3.89E-03 5.28E-03 Sample ID: 447119 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.40E-02 4.68E-03 6.53E-03 Sample ID: 447126 Sample Dates: 3/28/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <9.79E-04 0.00E+00 9.79E-04 Cs-137 <9.00E-04 0.00E+00 9.00E-04 Be-7 1.22E-01 2.73E-02 1.80E-02 K-40 1.75E-02 1.02E-02 3.94E-03 Sample ID: 447772 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.34E-02 5.19E-03 7.69E-03 Sample ID: 448236 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.30E-02 4.50E-03 6.30E-03 Sample ID: 448862 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.19E-03 4.34E-03 6.66E-03 Sample ID: 449178 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.08E-02 4.44E-03 6.51E-03 Sample ID: 449917 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.41E-02 4.34E-03 6.06E-03 Sample ID: 450162 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.57E-02 4.24E-03 5.65E-03 Sample ID: 450695 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.13E-03 3.71E-03 5.58E-03 Sample ID: 451146 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.70E-02 4.11E-03 5.17E-03 Sample ID: 451508 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.83E-02 5.00E-03 6.60E-03 Sample ID: 452312 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.54E-02 5.18E-03 7.43E-03 Sample ID: 452755 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.73E-02 4.33E-03 5.62E-03 Sample ID: 453401 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.86E-02 4.57E-03 6.00E-03 Sample ID: 454160 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.83E-02 4.62E-03 6.16E-03 Sample ID: 454167 Sample Dates: 6/27/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <4.08E-03 0.00E+00 4.08E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 17 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 205 Sample Point 205 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 454167 Sample Dates: 6/27/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <3.13E-03 0.00E+00 3.13E-03 Be-7 7.57E-02 4.83E-02 6.85E-02 K-40 <6.04E-02 0.00E+00 6.04E-02 Sample ID: 455027 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.47E-02 4.34E-03 5.96E-03 Sample ID: 455382 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.19E-03 4.46E-03 6.75E-03 Sample ID: 455999 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.29E-02 4.35E-03 5.94E-03 Sample ID: 461383 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.81E-02 5.00E-03 6.65E-03 Sample ID: 461929 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.52E-02 4.40E-03 6.04E-03 Sample ID: 462565 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.37E-02 4.57E-03 5.26E-03 Sample ID: 463049 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.19E-02 5.26E-03 6.62E-03 Sample ID: 463473 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.65E-02 5.45E-03 6.44E-03 Sample ID: 464132 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.85E-02 5.91E-03 7.21E-03 Sample ID: 464662 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.53E-02 5.49E-03 6.79E-03 Sample ID: 464923 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.63E-02 6.13E-03 8.99E-03 Sample ID: 465178 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.81E-02 5.94E-03 7.34E-03 Sample ID: 465553 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.85E-02 5.27E-03 5.72E-03 Sample ID: 465560 Sample Dates: 9/26/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <2.75E-03 0.00E+00 2.75E-03 Cs-137 <3.17E-03 0.00E+00 3.17E-03 Be-7 1.70E-01 5.96E-02 6.36E-02 K-40 <6.97E-02 0.00E+00 6.97E-02 Sample ID: 465940 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA Beta 2.97E-02 6.08E-03 7.40E-03 Cs-134 <3.15E-02 0.00E+00 3.15E-02 Cs-137 <2.90E-02 0.00E+00 2.90E-02 Be-7 <2.80E-01 0.00E+00 2.80E-01 K-40 5.99E-01 3.19E-01 4.04E-01 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 432168 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.54E-02 5.16E-03 7.23E-03 Sample ID: 432873 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.59E-02 4.71E-03 6.56E-03 Sample ID: 433273 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.93E-02 5.34E-03 7.07E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 18 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 206 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 433690 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.34E-02 4.20E-03 5.81E-03 Sample ID: 434425 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.67E-02 5.02E-03 6.86E-03 Sample ID: 435069 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.01E-02 5.04E-03 6.30E-03 Sample ID: 435779 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.62E-02 4.65E-03 6.39E-03 Sample ID: 436229 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.38E-02 5.33E-03 7.79E-03 Sample ID: 436680 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.34E-02 4.96E-03 7.13E-03 Sample ID: 437541 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.79E-02 3.93E-03 4.94E-03 Sample ID: 438271 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.17E-02 4.48E-03 6.53E-03 Sample ID: 438774 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.75E-02 4.30E-03 5.54E-03 Sample ID: 439117 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.08E-02 4.93E-03 6.18E-03 Sample ID: 439124 Sample Dates: 12/27/2016 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <1.42E-03 0.00E+00 1.42E-03 Cs-137 <1.03E-03 0.00E+00 1.03E-03 Be-7 1.57E-01 3.26E-02 2.32E-02 K-40 <2.72E-02 0.00E+00 2.72E-02 Sample ID: 439970 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.13E-02 3.95E-03 5.66E-03 Sample ID: 440568 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.57E-02 4.58E-03 6.09E-03 Sample ID: 441382 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.10E-02 5.26E-03 6.90E-03 Sample ID: 441827 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.32E-02 3.79E-03 5.06E-03 Sample ID: 442255 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.13E-02 4.64E-03 6.83E-03 Sample ID: 442841 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.51E-02 4.78E-03 6.66E-03 Sample ID: 443269 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.50E-02 4.29E-03 4.47E-03 Sample ID: 443827 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.25E-02 5.06E-03 6.22E-03 Sample ID: 444221 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.49E-02 4.21E-03 5.74E-03 Sample ID: 445291 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.27E-02 5.34E-03 6.82E-03 Sample ID: 446290 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Beta 8.31E-03 3.82E-03 5.76E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 19 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 206 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 446794 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.53E-02 3.96E-03 5.15E-03 Sample ID: 447120 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.13E-02 4.45E-03 6.45E-03 Sample ID: 447127 Sample Dates: 3/28/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <7.27E-04 0.00E+00 7.27E-04 Cs-137 <1.02E-03 0.00E+00 1.02E-03 Be-7 1.50E-01 3.05E-02 1.97E-02 K-40 <2.49E-02 0.00E+00 2.49E-02 Sample ID: 447773 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA Beta 9.99E-03 4.91E-03 7.55E-03 Sample ID: 448237 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.22E-02 4.43E-03 6.26E-03 Sample ID: 448863 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.10E-02 4.48E-03 6.58E-03 Sample ID: 449179 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.32E-02 4.55E-03 6.42E-03 Sample ID: 449918 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.04E-02 4.65E-03 5.96E-03 Sample ID: 450163 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.47E-02 4.14E-03 5.56E-03 Sample ID: 450696 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.21E-02 3.94E-03 5.50E-03 Sample ID: 451147 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.68E-02 4.04E-03 5.08E-03 Sample ID: 451509 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.71E-02 4.88E-03 6.47E-03 Sample ID: 452313 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.46E-02 5.08E-03 7.32E-03 Sample ID: 452756 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.70E-02 4.28E-03 5.53E-03 Sample ID: 453402 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.75E-02 4.43E-03 5.86E-03 Sample ID: 454161 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.30E-02 4.81E-03 6.02E-03 Sample ID: 454168 Sample Dates: 6/27/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <3.69E-03 0.00E+00 3.69E-03 Cs-137 <3.00E-03 0.00E+00 3.00E-03 Be-7 1.36E-01 6.55E-02 8.86E-02 K-40 6.43E-02 3.80E-02 4.70E-02 Sample ID: 455028 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.79E-02 4.42E-03 5.79E-03 Sample ID: 455383 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.26E-02 4.62E-03 6.61E-03 Sample ID: 456000 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.31E-02 4.32E-03 5.82E-03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 20 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 206 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 461384 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.34E-02 5.26E-03 6.50E-03 Sample ID: 461930 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.95E-02 4.60E-03 5.97E-03 Sample ID: 462566 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.03E-02 4.87E-03 5.14E-03 Sample ID: 463050 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA Beta 1.70E-02 4.83E-03 6.44E-03 Sample ID: 463474 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.69E-02 5.41E-03 6.34E-03 Sample ID: 464133 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.51E-02 5.64E-03 7.07E-03 Sample ID: 464663 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA Beta 3.32E-02 5.92E-03 6.80E-03 Sample ID: 464924 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.02E-02 5.60E-03 7.67E-03 Sample ID: 465179 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.93E-02 5.81E-03 7.01E-03 Sample ID: 465554 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Beta 2.69E-02 5.16E-03 5.69E-03 Sample ID: 465561 Sample Dates: 9/26/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <2.54E-03 0.00E+00 2.54E-03 Cs-137 <2.69E-03 0.00E+00 2.69E-03 Be-7 1.17E-01 5.26E-02 6.62E-02 K-40 <5.86E-02 0.00E+00 5.86E-02 Sample ID: 465941 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA Beta 2.84E-02 5.85E-03 7.15E-03 Cs-134 <3.00E-02 0.00E+00 3.00E-02 Cs-137 <2.35E-02 0.00E+00 2.35E-02 Be-7 <2.35E-01 0.00E+00 2.35E-01 K-40 1.22E-01 2.75E-01 4.79E-01 Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 432169 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.01E-02 0.00E+00 2.01E-02 Cs-134 <1.55E-02 0.00E+00 1.55E-02 Cs-137 <1.81E-02 0.00E+00 1.81E-02 Be-7 <1.51E-01 0.00E+00 1.51E-01 K-40 7.34E-01 2.59E-01 5.85E-02 Sample ID: 432874 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.37E-02 0.00E+00 2.37E-02 Cs-134 <3.05E-03 0.00E+00 3.05E-03 Cs-137 <1.98E-02 0.00E+00 1.98E-02 Be-7 <1.18E-01 0.00E+00 1.18E-01 K-40 6.65E-01 2.79E-01 2.41E-01 Sample ID: 433274 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.22E-02 0.00E+00 2.22E-02 Cs-134 <1.99E-02 0.00E+00 1.99E-02 Cs-137 <1.71E-02 0.00E+00 1.71E-02 Be-7 <9.88E-02 0.00E+00 9.88E-02 K-40 1.03E+00 3.25E-01 6.49E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 21 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 433691 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.87E-02 0.00E+00 1.87E-02 Cs-134 <1.50E-02 0.00E+00 1.50E-02 Cs-137 <1.97E-02 0.00E+00 1.97E-02 Be-7 <9.66E-02 0.00E+00 9.66E-02 K-40 8.10E-01 2.92E-01 2.30E-01 Sample ID: 434426 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.61E-02 0.00E+00 1.61E-02 Cs-134 <1.38E-02 0.00E+00 1.38E-02 Cs-137 <2.01E-02 0.00E+00 2.01E-02 Be-7 <8.57E-02 0.00E+00 8.57E-02 K-40 6.32E-01 2.74E-01 2.42E-01 Sample ID: 435070 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.99E-02 0.00E+00 1.99E-02 Cs-134 <1.72E-02 0.00E+00 1.72E-02 Cs-137 <1.86E-02 0.00E+00 1.86E-02 Be-7 <1.46E-01 0.00E+00 1.46E-01 K-40 9.33E-01 3.74E-01 4.13E-01 Sample ID: 435780 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.37E-02 0.00E+00 1.37E-02 Cs-134 <9.70E-03 0.00E+00 9.70E-03 Cs-137 <1.21E-02 0.00E+00 1.21E-02 Be-7 <1.10E-01 0.00E+00 1.10E-01 K-40 8.17E-01 3.10E-01 2.92E-01 Sample ID: 436230 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.85E-02 0.00E+00 1.85E-02 Cs-134 <1.37E-02 0.00E+00 1.37E-02 Cs-137 <1.70E-02 0.00E+00 1.70E-02 Be-7 <1.37E-01 0.00E+00 1.37E-01 K-40 8.10E-01 3.42E-01 3.73E-01 Sample ID: 436681 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.96E-02 0.00E+00 1.96E-02 Cs-134 <1.49E-02 0.00E+00 1.49E-02 Cs-137 <1.98E-02 0.00E+00 1.98E-02 Be-7 <1.51E-01 0.00E+00 1.51E-01 K-40 6.25E-01 2.93E-01 3.18E-01 Sample ID: 437542 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.65E-02 0.00E+00 1.65E-02 Cs-134 <1.08E-02 0.00E+00 1.08E-02 Cs-137 <1.76E-02 0.00E+00 1.76E-02 Be-7 <1.23E-01 0.00E+00 1.23E-01 K-40 9.00E-01 3.09E-01 2.34E-01 Sample ID: 438272 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.61E-02 0.00E+00 1.61E-02 Cs-134 <1.54E-02 0.00E+00 1.54E-02 Cs-137 <1.78E-02 0.00E+00 1.78E-02 Be-7 <1.06E-01 0.00E+00 1.06E-01 K-40 9.59E-01 3.08E-01 6.19E-02 Sample ID: 438775 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.31E-02 0.00E+00 2.31E-02 Cs-134 <1.49E-02 0.00E+00 1.49E-02 Cs-137 <1.58E-02 0.00E+00 1.58E-02 Be-7 <1.02E-01 0.00E+00 1.02E-01 K-40 1.03E+00 3.18E-01 6.09E-02 Sample ID: 439125 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.15E-02 0.00E+00 2.15E-02 Cs-134 <1.62E-02 0.00E+00 1.62E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 22 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 439125 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <9.33E-03 0.00E+00 9.33E-03 Be-7 <1.07E-01 0.00E+00 1.07E-01 K-40 8.22E-01 3.15E-01 3.06E-01 Sample ID: 439971 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.17E-02 0.00E+00 2.17E-02 Cs-134 <1.41E-02 0.00E+00 1.41E-02 Cs-137 <1.60E-02 0.00E+00 1.60E-02 Be-7 <8.01E-02 0.00E+00 8.01E-02 K-40 9.23E-01 2.98E-01 6.10E-02 Sample ID: 440569 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.72E-02 0.00E+00 1.72E-02 Cs-134 <1.20E-02 0.00E+00 1.20E-02 Cs-137 <1.75E-02 0.00E+00 1.75E-02 Be-7 <1.26E-01 0.00E+00 1.26E-01 K-40 6.20E-01 2.67E-01 2.72E-01 Sample ID: 441383 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.57E-02 0.00E+00 1.57E-02 Cs-134 <1.40E-02 0.00E+00 1.40E-02 Cs-137 <1.39E-02 0.00E+00 1.39E-02 Be-7 <7.00E-02 0.00E+00 7.00E-02 K-40 9.52E-01 2.88E-01 5.37E-02 Sample ID: 441828 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.86E-02 0.00E+00 1.86E-02 Cs-134 <1.65E-02 0.00E+00 1.65E-02 Cs-137 <1.42E-02 0.00E+00 1.42E-02 Be-7 <7.11E-02 0.00E+00 7.11E-02 K-40 <5.55E-01 0.00E+00 5.55E-01 Sample ID: 442256 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.61E-02 0.00E+00 1.61E-02 Cs-134 <1.86E-02 0.00E+00 1.86E-02 Cs-137 <1.48E-02 0.00E+00 1.48E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 6.82E-01 2.61E-01 1.99E-01 Sample ID: 442842 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.33E-02 0.00E+00 1.33E-02 Cs-134 <1.04E-02 0.00E+00 1.04E-02 Cs-137 <1.30E-02 0.00E+00 1.30E-02 Be-7 <1.09E-01 0.00E+00 1.09E-01 K-40 6.25E-01 2.56E-01 2.37E-01 Sample ID: 443270 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.55E-02 0.00E+00 1.55E-02 Cs-134 <1.12E-02 0.00E+00 1.12E-02 Cs-137 <1.64E-02 0.00E+00 1.64E-02 Be-7 <1.36E-01 0.00E+00 1.36E-01 K-40 8.94E-01 2.97E-01 2.22E-01 Sample ID: 443828 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.01E-02 0.00E+00 2.01E-02 Cs-134 <7.56E-03 0.00E+00 7.56E-03 Cs-137 <9.39E-03 0.00E+00 9.39E-03 Be-7 <1.17E-01 0.00E+00 1.17E-01 K-40 7.30E-01 2.59E-01 5.82E-02 Sample ID: 444222 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.78E-02 0.00E+00 1.78E-02 Cs-134 <1.45E-02 0.00E+00 1.45E-02 Cs-137 <1.99E-02 0.00E+00 1.99E-02 Be-7 <7.21E-02 0.00E+00 7.21E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 23 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 444222 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA K-40 <4.19E-01 0.00E+00 4.19E-01 Sample ID: 445292 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.43E-02 0.00E+00 1.43E-02 Cs-134 <1.44E-02 0.00E+00 1.44E-02 Cs-137 <1.91E-02 0.00E+00 1.91E-02 Be-7 <7.62E-02 0.00E+00 7.62E-02 K-40 5.21E-01 2.82E-01 3.56E-01 Sample ID: 446291 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.55E-02 0.00E+00 1.55E-02 Cs-134 <1.45E-02 0.00E+00 1.45E-02 Cs-137 <1.11E-02 0.00E+00 1.11E-02 Be-7 <9.32E-02 0.00E+00 9.32E-02 K-40 <4.31E-01 0.00E+00 4.31E-01 Sample ID: 446795 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.89E-02 0.00E+00 1.89E-02 Cs-134 <1.34E-02 0.00E+00 1.34E-02 Cs-137 <1.91E-02 0.00E+00 1.91E-02 Be-7 <1.16E-01 0.00E+00 1.16E-01 K-40 <4.18E-01 0.00E+00 4.18E-01 Sample ID: 447128 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.98E-02 0.00E+00 1.98E-02 Cs-134 <1.77E-02 0.00E+00 1.77E-02 Cs-137 <1.07E-02 0.00E+00 1.07E-02 Be-7 <1.10E-01 0.00E+00 1.10E-01 K-40 8.30E-01 2.72E-01 5.63E-02 Sample ID: 447774 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.58E-02 0.00E+00 1.58E-02 Cs-134 <1.35E-02 0.00E+00 1.35E-02 Cs-137 <1.28E-02 0.00E+00 1.28E-02 Be-7 <1.02E-01 0.00E+00 1.02E-01 K-40 <3.78E-01 0.00E+00 3.78E-01 Sample ID: 448238 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.91E-02 0.00E+00 1.91E-02 Cs-134 <1.64E-02 0.00E+00 1.64E-02 Cs-137 <1.93E-02 0.00E+00 1.93E-02 Be-7 <9.01E-02 0.00E+00 9.01E-02 K-40 2.97E-01 1.93E-01 2.32E-01 Sample ID: 448864 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.89E-02 0.00E+00 1.89E-02 Cs-134 <9.48E-03 0.00E+00 9.48E-03 Cs-137 <2.30E-02 0.00E+00 2.30E-02 Be-7 <1.24E-01 0.00E+00 1.24E-01 K-40 1.90E-01 1.73E-01 2.48E-01 Sample ID: 449180 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <9.58E-03 0.00E+00 9.58E-03 Cs-134 <1.37E-02 0.00E+00 1.37E-02 Cs-137 <2.06E-02 0.00E+00 2.06E-02 Be-7 <1.11E-01 0.00E+00 1.11E-01 K-40 2.96E-01 1.84E-01 2.02E-01 Sample ID: 449919 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.74E-02 0.00E+00 1.74E-02 Cs-134 <1.21E-02 0.00E+00 1.21E-02 Cs-137 <1.62E-02 0.00E+00 1.62E-02 Be-7 <8.95E-02 0.00E+00 8.95E-02 K-40 <3.98E-01 0.00E+00 3.98E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 24 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 450164 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.63E-02 0.00E+00 1.63E-02 Cs-134 <1.53E-02 0.00E+00 1.53E-02 Cs-137 <1.61E-02 0.00E+00 1.61E-02 Be-7 <6.94E-02 0.00E+00 6.94E-02 K-40 3.40E-01 2.09E-01 2.64E-01 Sample ID: 450697 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.90E-02 0.00E+00 1.90E-02 Cs-134 <1.30E-02 0.00E+00 1.30E-02 Cs-137 <1.71E-02 0.00E+00 1.71E-02 Be-7 <1.05E-01 0.00E+00 1.05E-01 K-40 2.46E-01 1.91E-01 2.66E-01 Sample ID: 451148 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.96E-02 0.00E+00 1.96E-02 Cs-134 <1.31E-02 0.00E+00 1.31E-02 Cs-137 <2.33E-02 0.00E+00 2.33E-02 Be-7 <9.94E-02 0.00E+00 9.94E-02 K-40 7.56E-01 2.54E-01 5.39E-02 Sample ID: 451510 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.46E-02 0.00E+00 1.46E-02 Cs-134 <1.26E-02 0.00E+00 1.26E-02 Cs-137 <1.71E-02 0.00E+00 1.71E-02 Be-7 <1.34E-01 0.00E+00 1.34E-01 K-40 <4.43E-01 0.00E+00 4.43E-01 Sample ID: 452314 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.55E-02 0.00E+00 1.55E-02 Cs-134 <1.13E-02 0.00E+00 1.13E-02 Cs-137 <2.04E-02 0.00E+00 2.04E-02 Be-7 <8.25E-02 0.00E+00 8.25E-02 K-40 2.24E-01 1.82E-01 2.54E-01 Sample ID: 452757 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.29E-02 0.00E+00 1.29E-02 Cs-134 <1.15E-02 0.00E+00 1.15E-02 Cs-137 <1.78E-02 0.00E+00 1.78E-02 Be-7 <8.36E-02 0.00E+00 8.36E-02 K-40 <4.11E-01 0.00E+00 4.11E-01 Sample ID: 453403 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.83E-02 0.00E+00 1.83E-02 Cs-134 <1.38E-02 0.00E+00 1.38E-02 Cs-137 <1.97E-02 0.00E+00 1.97E-02 Be-7 <7.86E-02 0.00E+00 7.86E-02 K-40 <3.32E-01 0.00E+00 3.32E-01 Sample ID: 454169 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.13E-02 0.00E+00 1.13E-02 Cs-134 <1.15E-02 0.00E+00 1.15E-02 Cs-137 <1.85E-02 0.00E+00 1.85E-02 Be-7 <1.11E-01 0.00E+00 1.11E-01 K-40 4.42E-01 2.36E-01 2.63E-01 Sample ID: 455029 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.91E-02 0.00E+00 3.91E-02 Cs-134 <3.31E-02 0.00E+00 3.31E-02 Cs-137 <2.73E-02 0.00E+00 2.73E-02 Be-7 <1.55E-01 0.00E+00 1.55E-01 K-40 8.48E-01 3.69E-01 4.27E-01 Sample ID: 455384 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.05E-02 0.00E+00 3.05E-02 Cs-134 <2.98E-02 0.00E+00 2.98E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 25 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 455384 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <2.85E-02 0.00E+00 2.85E-02 Be-7 <2.07E-01 0.00E+00 2.07E-01 K-40 <5.50E-01 0.00E+00 5.50E-01 Sample ID: 456001 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.64E-02 0.00E+00 3.64E-02 Cs-134 <1.95E-02 0.00E+00 1.95E-02 Cs-137 <3.24E-02 0.00E+00 3.24E-02 Be-7 <1.56E-01 0.00E+00 1.56E-01 K-40 3.83E-01 2.50E-01 3.28E-01 Sample ID: 461385 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.02E-02 0.00E+00 4.02E-02 Cs-134 <3.12E-02 0.00E+00 3.12E-02 Cs-137 <3.58E-02 0.00E+00 3.58E-02 Be-7 <2.25E-01 0.00E+00 2.25E-01 K-40 1.01E+00 3.67E-01 3.37E-01 Sample ID: 461931 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.45E-02 0.00E+00 5.45E-02 Cs-134 <2.85E-02 0.00E+00 2.85E-02 Cs-137 <3.09E-02 0.00E+00 3.09E-02 Be-7 <2.26E-01 0.00E+00 2.26E-01 K-40 8.72E-01 3.06E-01 2.78E-01 Sample ID: 462567 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.85E-02 0.00E+00 3.85E-02 Cs-134 <3.37E-02 0.00E+00 3.37E-02 Cs-137 <3.56E-02 0.00E+00 3.56E-02 Be-7 <2.23E-01 0.00E+00 2.23E-01 K-40 7.30E-01 3.80E-01 4.98E-01 Sample ID: 463051 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.87E-02 0.00E+00 4.87E-02 Cs-134 <3.60E-02 0.00E+00 3.60E-02 Cs-137 <3.38E-02 0.00E+00 3.38E-02 Be-7 <2.55E-01 0.00E+00 2.55E-01 K-40 8.68E-01 3.79E-01 4.37E-01 Sample ID: 463475 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.31E-02 0.00E+00 5.31E-02 Cs-134 <2.68E-02 0.00E+00 2.68E-02 Cs-137 <2.70E-02 0.00E+00 2.70E-02 Be-7 <2.15E-01 0.00E+00 2.15E-01 K-40 7.99E-01 3.06E-01 3.53E-01 Sample ID: 464134 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.22E-02 0.00E+00 5.22E-02 Cs-134 <3.03E-02 0.00E+00 3.03E-02 Cs-137 <3.38E-02 0.00E+00 3.38E-02 Be-7 <2.17E-01 0.00E+00 2.17E-01 K-40 1.42E+00 4.46E-01 4.03E-01 Sample ID: 464664 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.49E-02 0.00E+00 4.49E-02 Cs-134 <3.62E-02 0.00E+00 3.62E-02 Cs-137 <3.47E-02 0.00E+00 3.47E-02 Be-7 <2.37E-01 0.00E+00 2.37E-01 K-40 9.80E-01 3.69E-01 3.64E-01 Sample ID: 464925 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.44E-02 0.00E+00 4.44E-02 Cs-134 <3.68E-02 0.00E+00 3.68E-02 Cs-137 <4.25E-02 0.00E+00 4.25E-02 Be-7 <2.54E-01 0.00E+00 2.54E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 26 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 200 Sample Point 200 [ INDICATOR - WSW @ 1 miles ]

Sample ID: 464925 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA K-40 9.50E-01 3.43E-01 2.58E-01 Sample ID: 465180 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.58E-02 0.00E+00 4.58E-02 Cs-134 <3.08E-02 0.00E+00 3.08E-02 Cs-137 <3.89E-02 0.00E+00 3.89E-02 Be-7 <2.72E-01 0.00E+00 2.72E-01 K-40 8.55E-01 4.13E-01 5.28E-01 Sample ID: 465562 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.53E-02 0.00E+00 5.53E-02 Cs-134 <2.82E-02 0.00E+00 2.82E-02 Cs-137 <2.89E-02 0.00E+00 2.89E-02 Be-7 <2.41E-01 0.00E+00 2.41E-01 K-40 8.27E-01 3.53E-01 4.32E-01 Sample ID: 465942 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA I-131 <5.59E-02 0.00E+00 5.59E-02 Cs-134 <2.66E-02 0.00E+00 2.66E-02 Cs-137 <3.25E-02 0.00E+00 3.25E-02 Be-7 <2.46E-01 0.00E+00 2.46E-01 K-40 9.31E-01 3.54E-01 4.34E-01 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 432170 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.90E-02 0.00E+00 1.90E-02 Cs-134 <1.43E-02 0.00E+00 1.43E-02 Cs-137 <1.91E-02 0.00E+00 1.91E-02 Be-7 <1.33E-01 0.00E+00 1.33E-01 K-40 9.82E-01 3.32E-01 2.47E-01 Sample ID: 432875 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.49E-02 0.00E+00 1.49E-02 Cs-134 <1.51E-02 0.00E+00 1.51E-02 Cs-137 <2.22E-02 0.00E+00 2.22E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 1.00E+00 3.14E-01 6.16E-02 Sample ID: 433275 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.09E-02 0.00E+00 2.09E-02 Cs-134 <1.47E-02 0.00E+00 1.47E-02 Cs-137 <1.39E-02 0.00E+00 1.39E-02 Be-7 <8.95E-02 0.00E+00 8.95E-02 K-40 8.33E-01 2.95E-01 2.21E-01 Sample ID: 433692 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.40E-02 0.00E+00 1.40E-02 Cs-134 <1.65E-02 0.00E+00 1.65E-02 Cs-137 <1.62E-02 0.00E+00 1.62E-02 Be-7 <1.05E-01 0.00E+00 1.05E-01 K-40 5.95E-01 2.92E-01 3.52E-01 Sample ID: 434427 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.89E-02 0.00E+00 1.89E-02 Cs-134 <1.90E-02 0.00E+00 1.90E-02 Cs-137 <9.22E-03 0.00E+00 9.22E-03 Be-7 <1.22E-01 0.00E+00 1.22E-01 K-40 8.61E-01 2.83E-01 5.83E-02 Sample ID: 435071 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.78E-02 0.00E+00 1.78E-02 Cs-134 <1.32E-02 0.00E+00 1.32E-02 Cs-137 <1.88E-02 0.00E+00 1.88E-02 Be-7 <7.51E-02 0.00E+00 7.51E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 27 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 201 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 435071 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA K-40 9.25E-01 3.11E-01 2.22E-01 Sample ID: 435781 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.17E-02 0.00E+00 2.17E-02 Cs-134 <1.74E-02 0.00E+00 1.74E-02 Cs-137 <2.25E-02 0.00E+00 2.25E-02 Be-7 <1.29E-01 0.00E+00 1.29E-01 K-40 4.21E-01 2.53E-01 3.27E-01 Sample ID: 436231 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.08E-02 0.00E+00 1.08E-02 Cs-134 <1.31E-02 0.00E+00 1.31E-02 Cs-137 <1.75E-02 0.00E+00 1.75E-02 Be-7 <1.27E-01 0.00E+00 1.27E-01 K-40 7.88E-01 2.69E-01 5.77E-02 Sample ID: 436682 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.52E-02 0.00E+00 1.52E-02 Cs-134 <1.40E-02 0.00E+00 1.40E-02 Cs-137 <1.74E-02 0.00E+00 1.74E-02 Be-7 <1.33E-01 0.00E+00 1.33E-01 K-40 1.10E+00 3.22E-01 5.74E-02 Sample ID: 437543 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.19E-02 0.00E+00 2.19E-02 Cs-134 <1.60E-02 0.00E+00 1.60E-02 Cs-137 <1.88E-02 0.00E+00 1.88E-02 Be-7 <1.15E-01 0.00E+00 1.15E-01 K-40 7.72E-01 3.06E-01 3.04E-01 Sample ID: 438273 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.60E-02 0.00E+00 1.60E-02 Cs-134 <1.69E-02 0.00E+00 1.69E-02 Cs-137 <1.29E-02 0.00E+00 1.29E-02 Be-7 <1.11E-01 0.00E+00 1.11E-01 K-40 6.13E-01 2.57E-01 2.39E-01 Sample ID: 438776 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.79E-02 0.00E+00 1.79E-02 Cs-134 <1.36E-02 0.00E+00 1.36E-02 Cs-137 <1.19E-02 0.00E+00 1.19E-02 Be-7 <1.17E-01 0.00E+00 1.17E-01 K-40 9.97E-01 3.53E-01 3.43E-01 Sample ID: 439126 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.15E-02 0.00E+00 2.15E-02 Cs-134 <1.70E-02 0.00E+00 1.70E-02 Cs-137 <1.53E-02 0.00E+00 1.53E-02 Be-7 <8.81E-02 0.00E+00 8.81E-02 K-40 8.46E-01 2.81E-01 5.88E-02 Sample ID: 439972 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.69E-02 0.00E+00 1.69E-02 Cs-134 <1.52E-02 0.00E+00 1.52E-02 Cs-137 <1.43E-02 0.00E+00 1.43E-02 Be-7 <1.28E-01 0.00E+00 1.28E-01 K-40 7.01E-01 2.62E-01 1.96E-01 Sample ID: 440570 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.12E-02 0.00E+00 2.12E-02 Cs-134 <1.82E-02 0.00E+00 1.82E-02 Cs-137 <1.78E-02 0.00E+00 1.78E-02 Be-7 <1.24E-01 0.00E+00 1.24E-01 K-40 8.23E-01 3.24E-01 3.23E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 28 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 201 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 441384 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.07E-02 0.00E+00 1.07E-02 Cs-134 <1.54E-02 0.00E+00 1.54E-02 Cs-137 <1.81E-02 0.00E+00 1.81E-02 Be-7 <9.38E-02 0.00E+00 9.38E-02 K-40 1.01E+00 3.03E-01 5.60E-02 Sample ID: 441829 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.50E-02 0.00E+00 1.50E-02 Cs-134 <1.07E-02 0.00E+00 1.07E-02 Cs-137 <1.33E-02 0.00E+00 1.33E-02 Be-7 <8.53E-02 0.00E+00 8.53E-02 K-40 8.46E-01 3.15E-01 3.11E-01 Sample ID: 442257 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.79E-02 0.00E+00 1.79E-02 Cs-134 <1.44E-02 0.00E+00 1.44E-02 Cs-137 <1.56E-02 0.00E+00 1.56E-02 Be-7 <1.16E-01 0.00E+00 1.16E-01 K-40 7.01E-01 2.65E-01 2.10E-01 Sample ID: 442843 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.87E-02 0.00E+00 1.87E-02 Cs-134 <1.71E-02 0.00E+00 1.71E-02 Cs-137 <1.76E-02 0.00E+00 1.76E-02 Be-7 <1.13E-01 0.00E+00 1.13E-01 K-40 7.23E-01 2.63E-01 6.12E-02 Sample ID: 443271 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.66E-02 0.00E+00 1.66E-02 Cs-134 <1.10E-02 0.00E+00 1.10E-02 Cs-137 <1.66E-02 0.00E+00 1.66E-02 Be-7 <1.15E-01 0.00E+00 1.15E-01 K-40 9.20E-01 3.38E-01 3.35E-01 Sample ID: 443829 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.45E-02 0.00E+00 1.45E-02 Cs-134 <1.66E-02 0.00E+00 1.66E-02 Cs-137 <1.55E-02 0.00E+00 1.55E-02 Be-7 <1.02E-01 0.00E+00 1.02E-01 K-40 <4.33E-01 0.00E+00 4.33E-01 Sample ID: 444223 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.48E-02 0.00E+00 1.48E-02 Cs-134 <1.55E-02 0.00E+00 1.55E-02 Cs-137 <2.20E-02 0.00E+00 2.20E-02 Be-7 <1.19E-01 0.00E+00 1.19E-01 K-40 3.41E-01 1.92E-01 2.00E-01 Sample ID: 445293 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.73E-02 0.00E+00 1.73E-02 Cs-134 <1.27E-02 0.00E+00 1.27E-02 Cs-137 <1.30E-02 0.00E+00 1.30E-02 Be-7 <1.30E-01 0.00E+00 1.30E-01 K-40 2.14E-01 1.70E-01 2.26E-01 Sample ID: 446292 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.35E-02 0.00E+00 2.35E-02 Cs-134 <1.72E-02 0.00E+00 1.72E-02 Cs-137 <1.77E-02 0.00E+00 1.77E-02 Be-7 <1.06E-01 0.00E+00 1.06E-01 K-40 2.88E-01 1.83E-01 1.97E-01 Sample ID: 446796 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.31E-02 0.00E+00 2.31E-02 Cs-134 <1.69E-02 0.00E+00 1.69E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 29 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 201 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 446796 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <2.54E-02 0.00E+00 2.54E-02 Be-7 <1.36E-01 0.00E+00 1.36E-01 K-40 5.40E-01 2.21E-01 5.85E-02 Sample ID: 447129 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.13E-02 0.00E+00 2.13E-02 Cs-134 <1.33E-02 0.00E+00 1.33E-02 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <9.74E-02 0.00E+00 9.74E-02 K-40 3.90E-01 2.12E-01 2.25E-01 Sample ID: 447775 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.63E-02 0.00E+00 1.63E-02 Cs-134 <1.61E-02 0.00E+00 1.61E-02 Cs-137 <2.12E-02 0.00E+00 2.12E-02 Be-7 <1.31E-01 0.00E+00 1.31E-01 K-40 3.38E-01 2.15E-01 2.64E-01 Sample ID: 448239 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.00E-02 0.00E+00 2.00E-02 Cs-134 <1.15E-02 0.00E+00 1.15E-02 Cs-137 <2.08E-02 0.00E+00 2.08E-02 Be-7 <1.02E-01 0.00E+00 1.02E-01 K-40 <5.33E-01 0.00E+00 5.33E-01 Sample ID: 448865 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.36E-02 0.00E+00 2.36E-02 Cs-134 <1.27E-02 0.00E+00 1.27E-02 Cs-137 <2.38E-02 0.00E+00 2.38E-02 Be-7 <1.03E-01 0.00E+00 1.03E-01 K-40 <5.44E-01 0.00E+00 5.44E-01 Sample ID: 449181 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.29E-02 0.00E+00 2.29E-02 Cs-134 <1.62E-02 0.00E+00 1.62E-02 Cs-137 <2.30E-02 0.00E+00 2.30E-02 Be-7 <1.16E-01 0.00E+00 1.16E-01 K-40 5.02E-01 2.35E-01 2.21E-01 Sample ID: 449920 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.36E-02 0.00E+00 1.36E-02 Cs-134 <1.44E-02 0.00E+00 1.44E-02 Cs-137 <8.77E-03 0.00E+00 8.77E-03 Be-7 <1.29E-01 0.00E+00 1.29E-01 K-40 <4.25E-01 0.00E+00 4.25E-01 Sample ID: 450165 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.51E-02 0.00E+00 1.51E-02 Cs-134 <1.19E-02 0.00E+00 1.19E-02 Cs-137 <1.96E-02 0.00E+00 1.96E-02 Be-7 <9.53E-02 0.00E+00 9.53E-02 K-40 3.04E-01 2.07E-01 2.71E-01 Sample ID: 450698 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.77E-02 0.00E+00 1.77E-02 Cs-134 <1.62E-02 0.00E+00 1.62E-02 Cs-137 <2.01E-02 0.00E+00 2.01E-02 Be-7 <1.36E-01 0.00E+00 1.36E-01 K-40 4.97E-01 2.12E-01 5.86E-02 Sample ID: 451149 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.60E-02 0.00E+00 2.60E-02 Cs-134 <2.60E-02 0.00E+00 2.60E-02 Cs-137 <3.36E-02 0.00E+00 3.36E-02 Be-7 <1.91E-01 0.00E+00 1.91E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 30 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 201 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 451149 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA K-40 5.55E-01 2.96E-01 2.89E-01 Sample ID: 451511 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.20E-02 0.00E+00 1.20E-02 Cs-134 <1.42E-02 0.00E+00 1.42E-02 Cs-137 <1.66E-02 0.00E+00 1.66E-02 Be-7 <1.38E-01 0.00E+00 1.38E-01 K-40 <3.67E-01 0.00E+00 3.67E-01 Sample ID: 452315 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.96E-02 0.00E+00 1.96E-02 Cs-134 <1.32E-02 0.00E+00 1.32E-02 Cs-137 <1.74E-02 0.00E+00 1.74E-02 Be-7 <8.19E-02 0.00E+00 8.19E-02 K-40 3.04E-01 1.80E-01 1.96E-01 Sample ID: 452758 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.33E-02 0.00E+00 2.33E-02 Cs-134 <1.68E-02 0.00E+00 1.68E-02 Cs-137 <1.76E-02 0.00E+00 1.76E-02 Be-7 <8.74E-02 0.00E+00 8.74E-02 K-40 4.33E-01 2.17E-01 2.12E-01 Sample ID: 453404 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.58E-02 0.00E+00 1.58E-02 Cs-134 <1.17E-02 0.00E+00 1.17E-02 Cs-137 <1.83E-02 0.00E+00 1.83E-02 Be-7 <1.10E-01 0.00E+00 1.10E-01 K-40 3.45E-01 2.02E-01 2.34E-01 Sample ID: 454170 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.65E-02 0.00E+00 1.65E-02 Cs-134 <1.03E-02 0.00E+00 1.03E-02 Cs-137 <1.75E-02 0.00E+00 1.75E-02 Be-7 <1.31E-01 0.00E+00 1.31E-01 K-40 2.92E-01 1.73E-01 1.81E-01 Sample ID: 455030 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.08E-02 0.00E+00 3.08E-02 Cs-134 <2.76E-02 0.00E+00 2.76E-02 Cs-137 <2.98E-02 0.00E+00 2.98E-02 Be-7 <1.85E-01 0.00E+00 1.85E-01 K-40 5.37E-01 2.45E-01 2.03E-01 Sample ID: 455385 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.30E-02 0.00E+00 3.30E-02 Cs-134 <2.57E-02 0.00E+00 2.57E-02 Cs-137 <2.36E-02 0.00E+00 2.36E-02 Be-7 <2.17E-01 0.00E+00 2.17E-01 K-40 1.48E-01 2.76E-01 4.74E-01 Sample ID: 456002 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.51E-02 0.00E+00 2.51E-02 Cs-134 <2.83E-02 0.00E+00 2.83E-02 Cs-137 <2.31E-02 0.00E+00 2.31E-02 Be-7 <1.63E-01 0.00E+00 1.63E-01 K-40 <5.80E-01 0.00E+00 5.80E-01 Sample ID: 461386 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.53E-02 0.00E+00 4.53E-02 Cs-134 <3.31E-02 0.00E+00 3.31E-02 Cs-137 <3.63E-02 0.00E+00 3.63E-02 Be-7 <2.28E-01 0.00E+00 2.28E-01 K-40 1.14E+00 3.94E-01 3.59E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 31 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 201 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 461932 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.49E-02 0.00E+00 5.49E-02 Cs-134 <2.53E-02 0.00E+00 2.53E-02 Cs-137 <2.67E-02 0.00E+00 2.67E-02 Be-7 <1.81E-01 0.00E+00 1.81E-01 K-40 1.34E+00 6.83E-01 2.23E-01 Sample ID: 462568 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.09E-02 0.00E+00 4.09E-02 Cs-134 <3.92E-02 0.00E+00 3.92E-02 Cs-137 <3.88E-02 0.00E+00 3.88E-02 Be-7 <2.33E-01 0.00E+00 2.33E-01 K-40 9.53E-01 3.77E-01 3.96E-01 Sample ID: 463052 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.50E-02 0.00E+00 4.50E-02 Cs-134 <3.87E-02 0.00E+00 3.87E-02 Cs-137 <3.69E-02 0.00E+00 3.69E-02 Be-7 <2.68E-01 0.00E+00 2.68E-01 K-40 1.05E+00 4.15E-01 4.65E-01 Sample ID: 463476 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.59E-02 0.00E+00 5.59E-02 Cs-134 <3.07E-02 0.00E+00 3.07E-02 Cs-137 <2.92E-02 0.00E+00 2.92E-02 Be-7 <2.02E-01 0.00E+00 2.02E-01 K-40 6.67E-01 2.86E-01 3.33E-01 Sample ID: 464135 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.80E-02 0.00E+00 4.80E-02 Cs-134 <3.63E-02 0.00E+00 3.63E-02 Cs-137 <4.04E-02 0.00E+00 4.04E-02 Be-7 <2.32E-01 0.00E+00 2.32E-01 K-40 1.01E+00 4.19E-01 4.91E-01 Sample ID: 464665 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.42E-02 0.00E+00 4.42E-02 Cs-134 <4.02E-02 0.00E+00 4.02E-02 Cs-137 <3.24E-02 0.00E+00 3.24E-02 Be-7 <2.29E-01 0.00E+00 2.29E-01 K-40 7.64E-01 3.81E-01 4.87E-01 Sample ID: 464926 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.47E-02 0.00E+00 4.47E-02 Cs-134 <2.80E-02 0.00E+00 2.80E-02 Cs-137 <3.30E-02 0.00E+00 3.30E-02 Be-7 <2.65E-01 0.00E+00 2.65E-01 K-40 1.00E+00 3.73E-01 3.38E-01 Sample ID: 465181 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.82E-02 0.00E+00 4.82E-02 Cs-134 <3.24E-02 0.00E+00 3.24E-02 Cs-137 <3.72E-02 0.00E+00 3.72E-02 Be-7 <1.98E-01 0.00E+00 1.98E-01 K-40 9.64E-01 4.14E-01 4.92E-01 Sample ID: 465563 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.56E-02 0.00E+00 5.56E-02 Cs-134 <2.50E-02 0.00E+00 2.50E-02 Cs-137 <2.07E-02 0.00E+00 2.07E-02 Be-7 <2.10E-01 0.00E+00 2.10E-01 K-40 8.59E-01 2.58E-01 2.13E-01 Sample ID: 465943 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA I-131 <4.71E-02 0.00E+00 4.71E-02 Cs-134 <2.00E-02 0.00E+00 2.00E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 32 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 201 Sample Point 201 [ INDICATOR - NE @ 0.5 miles ]

Sample ID: 465943 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.79E-02 0.00E+00 1.79E-02 Be-7 <1.63E-01 0.00E+00 1.63E-01 K-40 1.11E+00 2.71E-01 2.11E-01 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 432171 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.35E-02 0.00E+00 1.35E-02 Cs-134 <1.31E-02 0.00E+00 1.31E-02 Cs-137 <1.49E-02 0.00E+00 1.49E-02 Be-7 <1.47E-01 0.00E+00 1.47E-01 K-40 6.62E-01 2.65E-01 2.23E-01 Sample ID: 432876 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.36E-02 0.00E+00 1.36E-02 Cs-134 <1.41E-02 0.00E+00 1.41E-02 Cs-137 <1.76E-02 0.00E+00 1.76E-02 Be-7 <1.23E-01 0.00E+00 1.23E-01 K-40 6.69E-01 2.55E-01 6.25E-02 Sample ID: 433276 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.43E-02 0.00E+00 1.43E-02 Cs-134 <1.22E-02 0.00E+00 1.22E-02 Cs-137 <1.51E-02 0.00E+00 1.51E-02 Be-7 <1.29E-01 0.00E+00 1.29E-01 K-40 6.87E-01 2.83E-01 2.71E-01 Sample ID: 433693 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.95E-02 0.00E+00 1.95E-02 Cs-134 <1.60E-02 0.00E+00 1.60E-02 Cs-137 <1.99E-02 0.00E+00 1.99E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 1.01E+00 3.44E-01 2.86E-01 Sample ID: 434428 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.77E-02 0.00E+00 1.77E-02 Cs-134 <1.30E-02 0.00E+00 1.30E-02 Cs-137 <1.45E-02 0.00E+00 1.45E-02 Be-7 <1.22E-01 0.00E+00 1.22E-01 K-40 1.27E+00 3.60E-01 6.25E-02 Sample ID: 435072 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.88E-02 0.00E+00 1.88E-02 Cs-134 <1.30E-02 0.00E+00 1.30E-02 Cs-137 <1.45E-02 0.00E+00 1.45E-02 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 7.90E-01 2.97E-01 2.31E-01 Sample ID: 435782 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.86E-02 0.00E+00 1.86E-02 Cs-134 <1.80E-02 0.00E+00 1.80E-02 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <9.36E-02 0.00E+00 9.36E-02 K-40 5.57E-01 3.19E-01 4.24E-01 Sample ID: 436232 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.85E-02 0.00E+00 1.85E-02 Cs-134 <1.80E-02 0.00E+00 1.80E-02 Cs-137 <1.61E-02 0.00E+00 1.61E-02 Be-7 <1.21E-01 0.00E+00 1.21E-01 K-40 9.97E-01 3.46E-01 2.99E-01 Sample ID: 436683 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.60E-02 0.00E+00 1.60E-02 Cs-134 <1.69E-02 0.00E+00 1.69E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 33 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 202 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 436683 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.74E-02 0.00E+00 1.74E-02 Be-7 <1.28E-01 0.00E+00 1.28E-01 K-40 9.99E-01 3.71E-01 3.89E-01 Sample ID: 437544 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.61E-02 0.00E+00 2.61E-02 Cs-134 <1.73E-02 0.00E+00 1.73E-02 Cs-137 <2.00E-02 0.00E+00 2.00E-02 Be-7 <2.11E-01 0.00E+00 2.11E-01 K-40 1.22E+00 4.04E-01 3.32E-01 Sample ID: 438274 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.21E-02 0.00E+00 2.21E-02 Cs-134 <7.95E-03 0.00E+00 7.95E-03 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <9.39E-02 0.00E+00 9.39E-02 K-40 9.43E-01 3.28E-01 2.65E-01 Sample ID: 438777 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.63E-02 0.00E+00 1.63E-02 Cs-134 <1.29E-02 0.00E+00 1.29E-02 Cs-137 <1.13E-02 0.00E+00 1.13E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 8.13E-01 2.71E-01 5.65E-02 Sample ID: 439127 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.36E-02 0.00E+00 1.36E-02 Cs-134 <8.90E-03 0.00E+00 8.90E-03 Cs-137 <1.68E-02 0.00E+00 1.68E-02 Be-7 <9.30E-02 0.00E+00 9.30E-02 K-40 7.55E-01 2.81E-01 2.43E-01 Sample ID: 439973 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.04E-02 0.00E+00 2.04E-02 Cs-134 <1.84E-02 0.00E+00 1.84E-02 Cs-137 <2.01E-02 0.00E+00 2.01E-02 Be-7 <1.07E-01 0.00E+00 1.07E-01 K-40 8.63E-01 2.83E-01 5.85E-02 Sample ID: 440571 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.70E-02 0.00E+00 1.70E-02 Cs-134 <1.26E-02 0.00E+00 1.26E-02 Cs-137 <1.44E-02 0.00E+00 1.44E-02 Be-7 <1.23E-01 0.00E+00 1.23E-01 K-40 5.93E-01 2.72E-01 3.03E-01 Sample ID: 441385 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.72E-02 0.00E+00 1.72E-02 Cs-134 <7.73E-03 0.00E+00 7.73E-03 Cs-137 <1.21E-02 0.00E+00 1.21E-02 Be-7 <1.34E-01 0.00E+00 1.34E-01 K-40 7.91E-01 3.13E-01 3.13E-01 Sample ID: 441830 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.75E-02 0.00E+00 1.75E-02 Cs-134 <1.51E-02 0.00E+00 1.51E-02 Cs-137 <1.64E-02 0.00E+00 1.64E-02 Be-7 <1.28E-01 0.00E+00 1.28E-01 K-40 6.89E-01 2.69E-01 2.20E-01 Sample ID: 442258 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.49E-02 0.00E+00 1.49E-02 Cs-134 <1.54E-02 0.00E+00 1.54E-02 Cs-137 <1.29E-02 0.00E+00 1.29E-02 Be-7 <7.24E-02 0.00E+00 7.24E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 34 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 202 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 442258 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA K-40 7.24E-01 2.91E-01 2.93E-01 Sample ID: 442844 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.25E-02 0.00E+00 2.25E-02 Cs-134 <1.68E-02 0.00E+00 1.68E-02 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <9.68E-02 0.00E+00 9.68E-02 K-40 8.06E-01 3.03E-01 2.78E-01 Sample ID: 443272 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.71E-02 0.00E+00 1.71E-02 Cs-134 <1.37E-02 0.00E+00 1.37E-02 Cs-137 <1.12E-02 0.00E+00 1.12E-02 Be-7 <1.03E-01 0.00E+00 1.03E-01 K-40 9.14E-01 2.87E-01 5.63E-02 Sample ID: 443830 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.57E-02 0.00E+00 1.57E-02 Cs-134 <1.47E-02 0.00E+00 1.47E-02 Cs-137 <1.60E-02 0.00E+00 1.60E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 6.07E-01 2.51E-01 2.25E-01 Sample ID: 444224 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.06E-02 0.00E+00 2.06E-02 Cs-134 <1.38E-02 0.00E+00 1.38E-02 Cs-137 <1.41E-02 0.00E+00 1.41E-02 Be-7 <1.11E-01 0.00E+00 1.11E-01 K-40 4.91E-01 2.33E-01 2.17E-01 Sample ID: 445294 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.91E-02 0.00E+00 1.91E-02 Cs-134 <1.11E-02 0.00E+00 1.11E-02 Cs-137 <2.09E-02 0.00E+00 2.09E-02 Be-7 <1.25E-01 0.00E+00 1.25E-01 K-40 <3.72E-01 0.00E+00 3.72E-01 Sample ID: 446293 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.69E-02 0.00E+00 1.69E-02 Cs-134 <1.67E-02 0.00E+00 1.67E-02 Cs-137 <1.56E-02 0.00E+00 1.56E-02 Be-7 <1.30E-01 0.00E+00 1.30E-01 K-40 4.21E-01 2.06E-01 1.86E-01 Sample ID: 446797 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.34E-02 0.00E+00 1.34E-02 Cs-134 <1.41E-02 0.00E+00 1.41E-02 Cs-137 <1.65E-02 0.00E+00 1.65E-02 Be-7 <9.11E-02 0.00E+00 9.11E-02 K-40 <4.52E-01 0.00E+00 4.52E-01 Sample ID: 447130 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.33E-02 0.00E+00 1.33E-02 Cs-134 <1.32E-02 0.00E+00 1.32E-02 Cs-137 <1.84E-02 0.00E+00 1.84E-02 Be-7 <9.90E-02 0.00E+00 9.90E-02 K-40 <3.61E-01 0.00E+00 3.61E-01 Sample ID: 447776 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.26E-02 0.00E+00 1.26E-02 Cs-134 <1.95E-02 0.00E+00 1.95E-02 Cs-137 <1.43E-02 0.00E+00 1.43E-02 Be-7 <8.10E-02 0.00E+00 8.10E-02 K-40 <4.92E-01 0.00E+00 4.92E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 35 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 202 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 448240 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.03E-02 0.00E+00 2.03E-02 Cs-134 <1.80E-02 0.00E+00 1.80E-02 Cs-137 <2.06E-02 0.00E+00 2.06E-02 Be-7 <1.05E-01 0.00E+00 1.05E-01 K-40 3.14E-01 2.28E-01 3.17E-01 Sample ID: 448866 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.98E-02 0.00E+00 1.98E-02 Cs-134 <1.17E-02 0.00E+00 1.17E-02 Cs-137 <1.82E-02 0.00E+00 1.82E-02 Be-7 <9.45E-02 0.00E+00 9.45E-02 K-40 <3.25E-01 0.00E+00 3.25E-01 Sample ID: 449182 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.08E-02 0.00E+00 1.08E-02 Cs-134 <9.47E-03 0.00E+00 9.47E-03 Cs-137 <1.18E-02 0.00E+00 1.18E-02 Be-7 <5.75E-02 0.00E+00 5.75E-02 K-40 3.33E-01 1.46E-01 1.67E-01 Sample ID: 449921 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.55E-02 0.00E+00 2.55E-02 Cs-134 <1.60E-02 0.00E+00 1.60E-02 Cs-137 <1.64E-02 0.00E+00 1.64E-02 Be-7 <1.21E-01 0.00E+00 1.21E-01 K-40 5.23E-01 2.33E-01 2.01E-01 Sample ID: 450166 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.08E-02 0.00E+00 2.08E-02 Cs-134 <1.78E-02 0.00E+00 1.78E-02 Cs-137 <1.60E-02 0.00E+00 1.60E-02 Be-7 <9.26E-02 0.00E+00 9.26E-02 K-40 2.92E-01 1.64E-01 6.08E-02 Sample ID: 450699 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.76E-02 0.00E+00 1.76E-02 Cs-134 <8.72E-03 0.00E+00 8.72E-03 Cs-137 <1.94E-02 0.00E+00 1.94E-02 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 4.37E-01 2.02E-01 1.61E-01 Sample ID: 451150 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.77E-02 0.00E+00 1.77E-02 Cs-134 <1.12E-02 0.00E+00 1.12E-02 Cs-137 <1.64E-02 0.00E+00 1.64E-02 Be-7 <9.15E-02 0.00E+00 9.15E-02 K-40 <4.36E-01 0.00E+00 4.36E-01 Sample ID: 451512 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.74E-02 0.00E+00 1.74E-02 Cs-134 <1.52E-02 0.00E+00 1.52E-02 Cs-137 <2.19E-02 0.00E+00 2.19E-02 Be-7 <1.28E-01 0.00E+00 1.28E-01 K-40 4.07E-01 1.90E-01 5.81E-02 Sample ID: 452316 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.77E-02 0.00E+00 1.77E-02 Cs-134 <1.64E-02 0.00E+00 1.64E-02 Cs-137 <1.76E-02 0.00E+00 1.76E-02 Be-7 <1.22E-01 0.00E+00 1.22E-01 K-40 <3.65E-01 0.00E+00 3.65E-01 Sample ID: 452759 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.80E-02 0.00E+00 1.80E-02 Cs-134 <1.35E-02 0.00E+00 1.35E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 36 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 202 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 452759 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.67E-02 0.00E+00 1.67E-02 Be-7 <1.10E-01 0.00E+00 1.10E-01 K-40 2.85E-01 2.11E-01 2.92E-01 Sample ID: 453405 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.37E-02 0.00E+00 2.37E-02 Cs-134 <1.59E-02 0.00E+00 1.59E-02 Cs-137 <1.78E-02 0.00E+00 1.78E-02 Be-7 <1.33E-01 0.00E+00 1.33E-01 K-40 <4.78E-01 0.00E+00 4.78E-01 Sample ID: 454171 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.74E-02 0.00E+00 1.74E-02 Cs-134 <2.26E-02 0.00E+00 2.26E-02 Cs-137 <2.10E-02 0.00E+00 2.10E-02 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 <4.94E-01 0.00E+00 4.94E-01 Sample ID: 455031 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.54E-02 0.00E+00 3.54E-02 Cs-134 <3.72E-02 0.00E+00 3.72E-02 Cs-137 <3.21E-02 0.00E+00 3.21E-02 Be-7 <1.85E-01 0.00E+00 1.85E-01 K-40 3.46E-01 2.56E-01 3.55E-01 Sample ID: 455386 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.23E-02 0.00E+00 3.23E-02 Cs-134 <3.56E-02 0.00E+00 3.56E-02 Cs-137 <2.85E-02 0.00E+00 2.85E-02 Be-7 <1.73E-01 0.00E+00 1.73E-01 K-40 5.39E-01 2.56E-01 2.43E-01 Sample ID: 456003 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.80E-02 0.00E+00 2.80E-02 Cs-134 <3.37E-02 0.00E+00 3.37E-02 Cs-137 <3.12E-02 0.00E+00 3.12E-02 Be-7 <1.86E-01 0.00E+00 1.86E-01 K-40 5.55E-01 2.87E-01 3.36E-01 Sample ID: 461387 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.42E-02 0.00E+00 4.42E-02 Cs-134 <3.96E-02 0.00E+00 3.96E-02 Cs-137 <3.38E-02 0.00E+00 3.38E-02 Be-7 <2.24E-01 0.00E+00 2.24E-01 K-40 1.00E+00 3.93E-01 4.21E-01 Sample ID: 461933 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.28E-02 0.00E+00 5.28E-02 Cs-134 <2.13E-02 0.00E+00 2.13E-02 Cs-137 <2.49E-02 0.00E+00 2.49E-02 Be-7 <1.85E-01 0.00E+00 1.85E-01 K-40 8.97E-01 2.99E-01 3.27E-01 Sample ID: 462569 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.19E-02 0.00E+00 4.19E-02 Cs-134 <3.32E-02 0.00E+00 3.32E-02 Cs-137 <2.71E-02 0.00E+00 2.71E-02 Be-7 <2.09E-01 0.00E+00 2.09E-01 K-40 6.64E-01 3.28E-01 3.86E-01 Sample ID: 463053 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.64E-02 0.00E+00 4.64E-02 Cs-134 <2.75E-02 0.00E+00 2.75E-02 Cs-137 <3.45E-02 0.00E+00 3.45E-02 Be-7 <2.36E-01 0.00E+00 2.36E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 37 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 202 Sample Point 202 [ INDICATOR - S @ 1 miles ]

Sample ID: 463053 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA K-40 9.29E-01 4.21E-01 5.20E-01 Sample ID: 463477 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.58E-02 0.00E+00 5.58E-02 Cs-134 <2.79E-02 0.00E+00 2.79E-02 Cs-137 <2.59E-02 0.00E+00 2.59E-02 Be-7 <1.97E-01 0.00E+00 1.97E-01 K-40 1.02E+00 3.10E-01 2.88E-01 Sample ID: 464136 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.36E-02 0.00E+00 4.36E-02 Cs-134 <2.75E-02 0.00E+00 2.75E-02 Cs-137 <3.45E-02 0.00E+00 3.45E-02 Be-7 <3.13E-01 0.00E+00 3.13E-01 K-40 1.02E+00 3.59E-01 2.72E-01 Sample ID: 464666 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.14E-02 0.00E+00 4.14E-02 Cs-134 <2.29E-02 0.00E+00 2.29E-02 Cs-137 <3.26E-02 0.00E+00 3.26E-02 Be-7 <2.31E-01 0.00E+00 2.31E-01 K-40 9.43E-01 4.07E-01 4.85E-01 Sample ID: 464927 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.41E-02 0.00E+00 4.41E-02 Cs-134 <3.00E-02 0.00E+00 3.00E-02 Cs-137 <3.00E-02 0.00E+00 3.00E-02 Be-7 <2.60E-01 0.00E+00 2.60E-01 K-40 1.04E+00 3.97E-01 4.00E-01 Sample ID: 465182 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.85E-02 0.00E+00 4.85E-02 Cs-134 <3.99E-02 0.00E+00 3.99E-02 Cs-137 <2.69E-02 0.00E+00 2.69E-02 Be-7 <2.38E-01 0.00E+00 2.38E-01 K-40 1.20E+00 4.50E-01 4.94E-01 Sample ID: 465564 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.37E-02 0.00E+00 5.37E-02 Cs-134 <2.73E-02 0.00E+00 2.73E-02 Cs-137 <2.36E-02 0.00E+00 2.36E-02 Be-7 <1.93E-01 0.00E+00 1.93E-01 K-40 1.03E+00 2.77E-01 2.06E-01 Sample ID: 465944 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA I-131 <5.49E-02 0.00E+00 5.49E-02 Cs-134 <2.01E-02 0.00E+00 2.01E-02 Cs-137 <3.09E-02 0.00E+00 3.09E-02 Be-7 <2.00E-01 0.00E+00 2.00E-01 K-40 1.13E+00 3.44E-01 3.11E-01 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 432172 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.13E-02 0.00E+00 2.13E-02 Cs-134 <1.54E-02 0.00E+00 1.54E-02 Cs-137 <1.26E-02 0.00E+00 1.26E-02 Be-7 <8.17E-02 0.00E+00 8.17E-02 K-40 9.95E-01 3.36E-01 2.51E-01 Sample ID: 432877 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.16E-02 0.00E+00 2.16E-02 Cs-134 <1.27E-02 0.00E+00 1.27E-02 Cs-137 <2.33E-02 0.00E+00 2.33E-02 Be-7 <1.50E-01 0.00E+00 1.50E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 38 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 203 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 432877 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA K-40 9.39E-01 3.16E-01 6.70E-02 Sample ID: 433277 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.10E-02 0.00E+00 2.10E-02 Cs-134 <1.47E-02 0.00E+00 1.47E-02 Cs-137 <1.83E-02 0.00E+00 1.83E-02 Be-7 <1.45E-01 0.00E+00 1.45E-01 K-40 1.24E+00 3.93E-01 3.55E-01 Sample ID: 433694 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.89E-02 0.00E+00 1.89E-02 Cs-134 <1.74E-02 0.00E+00 1.74E-02 Cs-137 <1.43E-02 0.00E+00 1.43E-02 Be-7 <9.32E-02 0.00E+00 9.32E-02 K-40 6.05E-01 2.61E-01 2.62E-01 Sample ID: 434429 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.82E-02 0.00E+00 1.82E-02 Cs-134 <1.82E-02 0.00E+00 1.82E-02 Cs-137 <2.03E-02 0.00E+00 2.03E-02 Be-7 <6.48E-02 0.00E+00 6.48E-02 K-40 6.43E-01 3.37E-01 4.34E-01 Sample ID: 435073 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.09E-02 0.00E+00 2.09E-02 Cs-134 <1.77E-02 0.00E+00 1.77E-02 Cs-137 <1.92E-02 0.00E+00 1.92E-02 Be-7 <1.59E-01 0.00E+00 1.59E-01 K-40 6.77E-01 2.96E-01 2.76E-01 Sample ID: 435783 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.41E-02 0.00E+00 2.41E-02 Cs-134 <1.39E-02 0.00E+00 1.39E-02 Cs-137 <1.14E-02 0.00E+00 1.14E-02 Be-7 <1.13E-01 0.00E+00 1.13E-01 K-40 7.33E-01 2.78E-01 2.34E-01 Sample ID: 436233 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.92E-02 0.00E+00 1.92E-02 Cs-134 <1.29E-02 0.00E+00 1.29E-02 Cs-137 <1.13E-02 0.00E+00 1.13E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 7.99E-01 2.84E-01 2.08E-01 Sample ID: 436684 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.86E-02 0.00E+00 1.86E-02 Cs-134 <1.74E-02 0.00E+00 1.74E-02 Cs-137 <1.97E-02 0.00E+00 1.97E-02 Be-7 <1.13E-01 0.00E+00 1.13E-01 K-40 5.68E-01 3.28E-01 4.51E-01 Sample ID: 437545 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.06E-02 0.00E+00 2.06E-02 Cs-134 <1.65E-02 0.00E+00 1.65E-02 Cs-137 <1.61E-02 0.00E+00 1.61E-02 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 7.84E-01 2.86E-01 2.26E-01 Sample ID: 438275 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.80E-02 0.00E+00 1.80E-02 Cs-134 <1.20E-02 0.00E+00 1.20E-02 Cs-137 <1.49E-02 0.00E+00 1.49E-02 Be-7 <8.38E-02 0.00E+00 8.38E-02 K-40 7.96E-01 3.01E-01 2.44E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 39 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 203 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 438778 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.78E-02 0.00E+00 1.78E-02 Cs-134 <1.42E-02 0.00E+00 1.42E-02 Cs-137 <2.27E-02 0.00E+00 2.27E-02 Be-7 <1.35E-01 0.00E+00 1.35E-01 K-40 7.05E-01 2.80E-01 2.51E-01 Sample ID: 439128 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.76E-02 0.00E+00 1.76E-02 Cs-134 <1.42E-02 0.00E+00 1.42E-02 Cs-137 <1.25E-02 0.00E+00 1.25E-02 Be-7 <1.30E-01 0.00E+00 1.30E-01 K-40 9.44E-01 3.27E-01 2.60E-01 Sample ID: 439974 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.36E-02 0.00E+00 1.36E-02 Cs-134 <1.26E-02 0.00E+00 1.26E-02 Cs-137 <1.28E-02 0.00E+00 1.28E-02 Be-7 <1.02E-01 0.00E+00 1.02E-01 K-40 7.00E-01 2.80E-01 2.72E-01 Sample ID: 440572 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.69E-02 0.00E+00 1.69E-02 Cs-134 <1.46E-02 0.00E+00 1.46E-02 Cs-137 <1.69E-02 0.00E+00 1.69E-02 Be-7 <1.17E-01 0.00E+00 1.17E-01 K-40 8.92E-01 3.17E-01 2.66E-01 Sample ID: 441386 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.91E-02 0.00E+00 1.91E-02 Cs-134 <1.40E-02 0.00E+00 1.40E-02 Cs-137 <1.49E-02 0.00E+00 1.49E-02 Be-7 <8.55E-02 0.00E+00 8.55E-02 K-40 6.67E-01 2.42E-01 5.65E-02 Sample ID: 441831 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.69E-02 0.00E+00 1.69E-02 Cs-134 <1.52E-02 0.00E+00 1.52E-02 Cs-137 <1.56E-02 0.00E+00 1.56E-02 Be-7 <1.16E-01 0.00E+00 1.16E-01 K-40 9.80E-01 3.14E-01 2.22E-01 Sample ID: 442259 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.59E-02 0.00E+00 1.59E-02 Cs-134 <1.59E-02 0.00E+00 1.59E-02 Cs-137 <1.97E-02 0.00E+00 1.97E-02 Be-7 <1.28E-01 0.00E+00 1.28E-01 K-40 8.51E-01 2.74E-01 5.49E-02 Sample ID: 442845 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.34E-02 0.00E+00 1.34E-02 Cs-134 <1.34E-02 0.00E+00 1.34E-02 Cs-137 <1.10E-02 0.00E+00 1.10E-02 Be-7 <1.22E-01 0.00E+00 1.22E-01 K-40 7.92E-01 2.81E-01 2.16E-01 Sample ID: 443273 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.36E-02 0.00E+00 1.36E-02 Cs-134 <1.90E-02 0.00E+00 1.90E-02 Cs-137 <1.26E-02 0.00E+00 1.26E-02 Be-7 <1.05E-01 0.00E+00 1.05E-01 K-40 6.40E-01 2.48E-01 6.20E-02 Sample ID: 443831 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.79E-02 0.00E+00 1.79E-02 Cs-134 <1.15E-02 0.00E+00 1.15E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 40 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 203 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 443831 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.27E-02 0.00E+00 1.27E-02 Be-7 <9.30E-02 0.00E+00 9.30E-02 K-40 6.38E-01 2.87E-01 3.26E-01 Sample ID: 444225 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.59E-02 0.00E+00 1.59E-02 Cs-134 <1.15E-02 0.00E+00 1.15E-02 Cs-137 <1.56E-02 0.00E+00 1.56E-02 Be-7 <8.39E-02 0.00E+00 8.39E-02 K-40 1.63E-01 1.61E-01 2.39E-01 Sample ID: 445295 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.66E-02 0.00E+00 1.66E-02 Cs-134 <1.76E-02 0.00E+00 1.76E-02 Cs-137 <1.36E-02 0.00E+00 1.36E-02 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 4.69E-01 2.59E-01 3.19E-01 Sample ID: 446294 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.47E-02 0.00E+00 2.47E-02 Cs-134 <1.28E-02 0.00E+00 1.28E-02 Cs-137 <2.57E-02 0.00E+00 2.57E-02 Be-7 <1.21E-01 0.00E+00 1.21E-01 K-40 <5.12E-01 0.00E+00 5.12E-01 Sample ID: 446798 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.47E-02 0.00E+00 1.47E-02 Cs-134 <6.99E-03 0.00E+00 6.99E-03 Cs-137 <1.77E-02 0.00E+00 1.77E-02 Be-7 <9.18E-02 0.00E+00 9.18E-02 K-40 3.31E-01 2.12E-01 2.70E-01 Sample ID: 447131 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.36E-02 0.00E+00 1.36E-02 Cs-134 <1.36E-02 0.00E+00 1.36E-02 Cs-137 <1.57E-02 0.00E+00 1.57E-02 Be-7 <9.34E-02 0.00E+00 9.34E-02 K-40 <4.63E-01 0.00E+00 4.63E-01 Sample ID: 447777 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.53E-02 0.00E+00 1.53E-02 Cs-134 <1.52E-02 0.00E+00 1.52E-02 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <1.54E-01 0.00E+00 1.54E-01 K-40 1.09E+00 3.21E-01 5.82E-02 Sample ID: 448241 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.65E-02 0.00E+00 1.65E-02 Cs-134 <1.48E-02 0.00E+00 1.48E-02 Cs-137 <1.25E-02 0.00E+00 1.25E-02 Be-7 <9.97E-02 0.00E+00 9.97E-02 K-40 4.83E-01 2.18E-01 1.95E-01 Sample ID: 448867 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.67E-02 0.00E+00 1.67E-02 Cs-134 <1.24E-02 0.00E+00 1.24E-02 Cs-137 <1.76E-02 0.00E+00 1.76E-02 Be-7 <1.22E-01 0.00E+00 1.22E-01 K-40 <4.06E-01 0.00E+00 4.06E-01 Sample ID: 449183 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.02E-02 0.00E+00 2.02E-02 Cs-134 <1.16E-02 0.00E+00 1.16E-02 Cs-137 <1.57E-02 0.00E+00 1.57E-02 Be-7 <1.03E-01 0.00E+00 1.03E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 41 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 203 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 449183 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA K-40 3.23E-01 2.07E-01 2.59E-01 Sample ID: 449922 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.99E-02 0.00E+00 1.99E-02 Cs-134 <1.27E-02 0.00E+00 1.27E-02 Cs-137 <1.81E-02 0.00E+00 1.81E-02 Be-7 <1.02E-01 0.00E+00 1.02E-01 K-40 4.76E-01 2.03E-01 5.61E-02 Sample ID: 450167 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.37E-02 0.00E+00 1.37E-02 Cs-134 <1.29E-02 0.00E+00 1.29E-02 Cs-137 <1.84E-02 0.00E+00 1.84E-02 Be-7 <1.11E-01 0.00E+00 1.11E-01 K-40 <4.03E-01 0.00E+00 4.03E-01 Sample ID: 450700 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.05E-02 0.00E+00 2.05E-02 Cs-134 <9.15E-03 0.00E+00 9.15E-03 Cs-137 <3.32E-03 0.00E+00 3.32E-03 Be-7 <1.18E-01 0.00E+00 1.18E-01 K-40 <4.41E-01 0.00E+00 4.41E-01 Sample ID: 451151 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.70E-02 0.00E+00 1.70E-02 Cs-134 <1.04E-02 0.00E+00 1.04E-02 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <7.26E-02 0.00E+00 7.26E-02 K-40 2.40E-01 1.91E-01 2.65E-01 Sample ID: 451513 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.03E-02 0.00E+00 2.03E-02 Cs-134 <1.02E-02 0.00E+00 1.02E-02 Cs-137 <1.54E-02 0.00E+00 1.54E-02 Be-7 <1.15E-01 0.00E+00 1.15E-01 K-40 <4.42E-01 0.00E+00 4.42E-01 Sample ID: 452317 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.17E-02 0.00E+00 2.17E-02 Cs-134 <1.91E-02 0.00E+00 1.91E-02 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <1.30E-01 0.00E+00 1.30E-01 K-40 <5.49E-01 0.00E+00 5.49E-01 Sample ID: 452760 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.47E-02 0.00E+00 1.47E-02 Cs-134 <1.96E-02 0.00E+00 1.96E-02 Cs-137 <1.71E-02 0.00E+00 1.71E-02 Be-7 <9.54E-02 0.00E+00 9.54E-02 K-40 4.48E-01 2.14E-01 1.93E-01 Sample ID: 453406 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.40E-02 0.00E+00 1.40E-02 Cs-134 <1.09E-02 0.00E+00 1.09E-02 Cs-137 <1.66E-02 0.00E+00 1.66E-02 Be-7 <8.74E-02 0.00E+00 8.74E-02 K-40 3.40E-01 1.89E-01 1.81E-01 Sample ID: 454172 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.57E-02 0.00E+00 1.57E-02 Cs-134 <1.52E-02 0.00E+00 1.52E-02 Cs-137 <2.05E-02 0.00E+00 2.05E-02 Be-7 <9.20E-02 0.00E+00 9.20E-02 K-40 <4.65E-01 0.00E+00 4.65E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 42 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 203 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 455032 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.32E-02 0.00E+00 3.32E-02 Cs-134 <3.07E-02 0.00E+00 3.07E-02 Cs-137 <2.39E-02 0.00E+00 2.39E-02 Be-7 <1.78E-01 0.00E+00 1.78E-01 K-40 <6.52E-01 0.00E+00 6.52E-01 Sample ID: 455387 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.47E-02 0.00E+00 3.47E-02 Cs-134 <3.35E-02 0.00E+00 3.35E-02 Cs-137 <3.23E-02 0.00E+00 3.23E-02 Be-7 <1.85E-01 0.00E+00 1.85E-01 K-40 1.04E+00 3.58E-01 2.93E-01 Sample ID: 456004 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.72E-02 0.00E+00 3.72E-02 Cs-134 <3.74E-02 0.00E+00 3.74E-02 Cs-137 <3.11E-02 0.00E+00 3.11E-02 Be-7 <2.07E-01 0.00E+00 2.07E-01 K-40 1.08E+00 3.43E-01 6.95E-02 Sample ID: 461388 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.54E-02 0.00E+00 4.54E-02 Cs-134 <3.98E-02 0.00E+00 3.98E-02 Cs-137 <3.68E-02 0.00E+00 3.68E-02 Be-7 <2.55E-01 0.00E+00 2.55E-01 K-40 1.27E+00 4.11E-01 3.45E-01 Sample ID: 461934 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.51E-02 0.00E+00 5.51E-02 Cs-134 <3.04E-02 0.00E+00 3.04E-02 Cs-137 <2.52E-02 0.00E+00 2.52E-02 Be-7 <1.74E-01 0.00E+00 1.74E-01 K-40 1.06E+00 3.14E-01 2.73E-01 Sample ID: 462570 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.66E-02 0.00E+00 4.66E-02 Cs-134 <3.74E-02 0.00E+00 3.74E-02 Cs-137 <3.49E-02 0.00E+00 3.49E-02 Be-7 <2.37E-01 0.00E+00 2.37E-01 K-40 <7.16E-01 0.00E+00 7.16E-01 Sample ID: 463054 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.75E-02 0.00E+00 4.75E-02 Cs-134 <3.82E-02 0.00E+00 3.82E-02 Cs-137 <3.42E-02 0.00E+00 3.42E-02 Be-7 <2.37E-01 0.00E+00 2.37E-01 K-40 <7.95E-01 0.00E+00 7.95E-01 Sample ID: 463478 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.18E-02 0.00E+00 5.18E-02 Cs-134 <2.76E-02 0.00E+00 2.76E-02 Cs-137 <2.19E-02 0.00E+00 2.19E-02 Be-7 <1.84E-01 0.00E+00 1.84E-01 K-40 1.03E+00 3.26E-01 3.61E-01 Sample ID: 464137 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.16E-02 0.00E+00 4.16E-02 Cs-134 <3.69E-02 0.00E+00 3.69E-02 Cs-137 <3.46E-02 0.00E+00 3.46E-02 Be-7 <2.66E-01 0.00E+00 2.66E-01 K-40 7.48E-01 3.78E-01 4.78E-01 Sample ID: 464667 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.35E-02 0.00E+00 4.35E-02 Cs-134 <3.85E-02 0.00E+00 3.85E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 43 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 203 Sample Point 203 [ INDICATOR - SSW @ 2 miles ]

Sample ID: 464667 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <3.48E-02 0.00E+00 3.48E-02 Be-7 <2.56E-01 0.00E+00 2.56E-01 K-40 9.53E-01 3.85E-01 4.19E-01 Sample ID: 464928 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.06E-02 0.00E+00 5.06E-02 Cs-134 <3.50E-02 0.00E+00 3.50E-02 Cs-137 <3.44E-02 0.00E+00 3.44E-02 Be-7 <2.67E-01 0.00E+00 2.67E-01 K-40 7.53E-01 4.35E-01 6.05E-01 Sample ID: 465183 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.81E-02 0.00E+00 4.81E-02 Cs-134 <3.60E-02 0.00E+00 3.60E-02 Cs-137 <3.89E-02 0.00E+00 3.89E-02 Be-7 <2.38E-01 0.00E+00 2.38E-01 K-40 9.20E-01 3.93E-01 4.44E-01 Sample ID: 465565 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.52E-02 0.00E+00 5.52E-02 Cs-134 <3.01E-02 0.00E+00 3.01E-02 Cs-137 <2.72E-02 0.00E+00 2.72E-02 Be-7 <1.98E-01 0.00E+00 1.98E-01 K-40 8.08E-01 2.62E-01 2.55E-01 Sample ID: 465945 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA I-131 <5.36E-02 0.00E+00 5.36E-02 Cs-134 <2.83E-02 0.00E+00 2.83E-02 Cs-137 <2.85E-02 0.00E+00 2.85E-02 Be-7 <2.20E-01 0.00E+00 2.20E-01 K-40 9.87E-01 2.92E-01 1.89E-01 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 432173 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.56E-02 0.00E+00 1.56E-02 Cs-134 <1.21E-02 0.00E+00 1.21E-02 Cs-137 <2.09E-02 0.00E+00 2.09E-02 Be-7 <1.44E-01 0.00E+00 1.44E-01 K-40 7.98E-01 2.90E-01 2.24E-01 Sample ID: 432878 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.29E-02 0.00E+00 2.29E-02 Cs-134 <1.26E-02 0.00E+00 1.26E-02 Cs-137 <2.05E-02 0.00E+00 2.05E-02 Be-7 <6.92E-02 0.00E+00 6.92E-02 K-40 7.10E-01 2.70E-01 6.64E-02 Sample ID: 433278 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.71E-02 0.00E+00 1.71E-02 Cs-134 <1.76E-02 0.00E+00 1.76E-02 Cs-137 <1.77E-02 0.00E+00 1.77E-02 Be-7 <1.07E-01 0.00E+00 1.07E-01 K-40 1.13E+00 3.64E-01 3.20E-01 Sample ID: 433695 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.04E-02 0.00E+00 2.04E-02 Cs-134 <1.35E-02 0.00E+00 1.35E-02 Cs-137 <1.54E-02 0.00E+00 1.54E-02 Be-7 <9.99E-02 0.00E+00 9.99E-02 K-40 9.02E-01 2.93E-01 5.97E-02 Sample ID: 434430 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.35E-02 0.00E+00 1.35E-02 Cs-134 <1.48E-02 0.00E+00 1.48E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 44 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 204 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 434430 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.84E-02 0.00E+00 1.84E-02 Be-7 <1.19E-01 0.00E+00 1.19E-01 K-40 1.06E+00 3.53E-01 2.94E-01 Sample ID: 435074 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.75E-02 0.00E+00 1.75E-02 Cs-134 <1.47E-02 0.00E+00 1.47E-02 Cs-137 <1.95E-02 0.00E+00 1.95E-02 Be-7 <9.07E-02 0.00E+00 9.07E-02 K-40 7.86E-01 2.91E-01 2.23E-01 Sample ID: 435784 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.18E-02 0.00E+00 2.18E-02 Cs-134 <9.63E-03 0.00E+00 9.63E-03 Cs-137 <1.93E-02 0.00E+00 1.93E-02 Be-7 <1.27E-01 0.00E+00 1.27E-01 K-40 7.83E-01 2.88E-01 2.15E-01 Sample ID: 436234 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.73E-02 0.00E+00 1.73E-02 Cs-134 <1.36E-02 0.00E+00 1.36E-02 Cs-137 <1.81E-02 0.00E+00 1.81E-02 Be-7 <1.10E-01 0.00E+00 1.10E-01 K-40 7.68E-01 3.01E-01 2.82E-01 Sample ID: 436685 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.11E-02 0.00E+00 2.11E-02 Cs-134 <1.11E-02 0.00E+00 1.11E-02 Cs-137 <1.53E-02 0.00E+00 1.53E-02 Be-7 <1.09E-01 0.00E+00 1.09E-01 K-40 9.88E-01 3.08E-01 5.95E-02 Sample ID: 437546 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.24E-02 0.00E+00 1.24E-02 Cs-134 <1.87E-02 0.00E+00 1.87E-02 Cs-137 <1.74E-02 0.00E+00 1.74E-02 Be-7 <1.04E-01 0.00E+00 1.04E-01 K-40 9.63E-01 3.06E-01 6.07E-02 Sample ID: 438276 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.86E-02 0.00E+00 1.86E-02 Cs-134 <1.17E-02 0.00E+00 1.17E-02 Cs-137 <1.59E-02 0.00E+00 1.59E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 7.70E-01 3.00E-01 2.95E-01 Sample ID: 438779 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.37E-02 0.00E+00 1.37E-02 Cs-134 <1.43E-02 0.00E+00 1.43E-02 Cs-137 <2.15E-02 0.00E+00 2.15E-02 Be-7 <8.11E-02 0.00E+00 8.11E-02 K-40 1.11E+00 3.72E-01 3.35E-01 Sample ID: 439129 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.65E-02 0.00E+00 1.65E-02 Cs-134 <1.21E-02 0.00E+00 1.21E-02 Cs-137 <1.16E-02 0.00E+00 1.16E-02 Be-7 <1.05E-01 0.00E+00 1.05E-01 K-40 8.62E-01 2.79E-01 5.70E-02 Sample ID: 439975 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.94E-02 0.00E+00 1.94E-02 Cs-134 <1.77E-02 0.00E+00 1.77E-02 Cs-137 <1.59E-02 0.00E+00 1.59E-02 Be-7 <1.03E-01 0.00E+00 1.03E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 45 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 204 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 439975 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA K-40 6.46E-01 2.39E-01 5.65E-02 Sample ID: 440573 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.91E-02 0.00E+00 1.91E-02 Cs-134 <1.73E-02 0.00E+00 1.73E-02 Cs-137 <1.98E-02 0.00E+00 1.98E-02 Be-7 <1.01E-01 0.00E+00 1.01E-01 K-40 7.51E-01 2.56E-01 5.50E-02 Sample ID: 441387 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.67E-02 0.00E+00 1.67E-02 Cs-134 <1.41E-02 0.00E+00 1.41E-02 Cs-137 <1.60E-02 0.00E+00 1.60E-02 Be-7 <9.32E-02 0.00E+00 9.32E-02 K-40 7.44E-01 2.89E-01 2.46E-01 Sample ID: 441832 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.86E-02 0.00E+00 1.86E-02 Cs-134 <1.68E-02 0.00E+00 1.68E-02 Cs-137 <1.85E-02 0.00E+00 1.85E-02 Be-7 <1.19E-01 0.00E+00 1.19E-01 K-40 6.85E-01 2.53E-01 5.98E-02 Sample ID: 442260 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.72E-02 0.00E+00 1.72E-02 Cs-134 <9.15E-03 0.00E+00 9.15E-03 Cs-137 <1.73E-02 0.00E+00 1.73E-02 Be-7 <1.03E-01 0.00E+00 1.03E-01 K-40 6.19E-01 2.32E-01 5.59E-02 Sample ID: 442846 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.22E-02 0.00E+00 1.22E-02 Cs-134 <8.90E-03 0.00E+00 8.90E-03 Cs-137 <1.28E-02 0.00E+00 1.28E-02 Be-7 <1.45E-01 0.00E+00 1.45E-01 K-40 8.39E-01 2.90E-01 2.16E-01 Sample ID: 443274 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.72E-02 0.00E+00 1.72E-02 Cs-134 <9.16E-03 0.00E+00 9.16E-03 Cs-137 <9.02E-03 0.00E+00 9.02E-03 Be-7 <9.48E-02 0.00E+00 9.48E-02 K-40 8.26E-01 2.70E-01 5.60E-02 Sample ID: 443832 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.75E-02 0.00E+00 1.75E-02 Cs-134 <1.31E-02 0.00E+00 1.31E-02 Cs-137 <1.75E-02 0.00E+00 1.75E-02 Be-7 <8.69E-02 0.00E+00 8.69E-02 K-40 8.28E-01 2.93E-01 2.24E-01 Sample ID: 444226 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.46E-02 0.00E+00 1.46E-02 Cs-134 <1.43E-02 0.00E+00 1.43E-02 Cs-137 <2.14E-02 0.00E+00 2.14E-02 Be-7 <1.17E-01 0.00E+00 1.17E-01 K-40 2.51E-01 1.67E-01 1.94E-01 Sample ID: 445296 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.82E-02 0.00E+00 1.82E-02 Cs-134 <9.10E-03 0.00E+00 9.10E-03 Cs-137 <8.97E-03 0.00E+00 8.97E-03 Be-7 <1.37E-01 0.00E+00 1.37E-01 K-40 6.16E-01 2.31E-01 5.57E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 46 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 204 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 446295 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.96E-02 0.00E+00 1.96E-02 Cs-134 <9.03E-03 0.00E+00 9.03E-03 Cs-137 <1.30E-02 0.00E+00 1.30E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 2.57E-01 1.84E-01 2.37E-01 Sample ID: 446799 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.04E-02 0.00E+00 2.04E-02 Cs-134 <1.41E-02 0.00E+00 1.41E-02 Cs-137 <1.49E-02 0.00E+00 1.49E-02 Be-7 <1.13E-01 0.00E+00 1.13E-01 K-40 1.06E+00 3.29E-01 2.15E-01 Sample ID: 447132 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.95E-02 0.00E+00 1.95E-02 Cs-134 <1.13E-02 0.00E+00 1.13E-02 Cs-137 <2.07E-02 0.00E+00 2.07E-02 Be-7 <1.01E-01 0.00E+00 1.01E-01 K-40 3.45E-01 2.28E-01 2.97E-01 Sample ID: 447778 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.84E-02 0.00E+00 1.84E-02 Cs-134 <1.49E-02 0.00E+00 1.49E-02 Cs-137 <2.27E-02 0.00E+00 2.27E-02 Be-7 <1.22E-01 0.00E+00 1.22E-01 K-40 <3.76E-01 0.00E+00 3.76E-01 Sample ID: 448242 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.59E-02 0.00E+00 1.59E-02 Cs-134 <1.44E-02 0.00E+00 1.44E-02 Cs-137 <2.07E-02 0.00E+00 2.07E-02 Be-7 <1.10E-01 0.00E+00 1.10E-01 K-40 4.70E-01 2.01E-01 5.54E-02 Sample ID: 448868 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.43E-02 0.00E+00 2.43E-02 Cs-134 <1.08E-02 0.00E+00 1.08E-02 Cs-137 <1.63E-02 0.00E+00 1.63E-02 Be-7 <8.70E-02 0.00E+00 8.70E-02 K-40 3.25E-01 1.92E-01 2.10E-01 Sample ID: 449184 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.93E-02 0.00E+00 1.93E-02 Cs-134 <1.47E-02 0.00E+00 1.47E-02 Cs-137 <1.93E-02 0.00E+00 1.93E-02 Be-7 <1.25E-01 0.00E+00 1.25E-01 K-40 2.64E-01 1.63E-01 1.64E-01 Sample ID: 449923 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.61E-02 0.00E+00 1.61E-02 Cs-134 <1.26E-02 0.00E+00 1.26E-02 Cs-137 <2.37E-02 0.00E+00 2.37E-02 Be-7 <1.01E-01 0.00E+00 1.01E-01 K-40 <4.28E-01 0.00E+00 4.28E-01 Sample ID: 450168 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.66E-02 0.00E+00 1.66E-02 Cs-134 <1.15E-02 0.00E+00 1.15E-02 Cs-137 <2.31E-02 0.00E+00 2.31E-02 Be-7 <1.21E-01 0.00E+00 1.21E-01 K-40 <4.37E-01 0.00E+00 4.37E-01 Sample ID: 450701 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.71E-02 0.00E+00 1.71E-02 Cs-134 <1.52E-02 0.00E+00 1.52E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 47 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 204 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 450701 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.98E-02 0.00E+00 1.98E-02 Be-7 <9.29E-02 0.00E+00 9.29E-02 K-40 <4.92E-01 0.00E+00 4.92E-01 Sample ID: 451152 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.54E-02 0.00E+00 2.54E-02 Cs-134 <1.37E-02 0.00E+00 1.37E-02 Cs-137 <1.70E-02 0.00E+00 1.70E-02 Be-7 <1.01E-01 0.00E+00 1.01E-01 K-40 3.48E-01 2.13E-01 2.56E-01 Sample ID: 451514 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.71E-02 0.00E+00 1.71E-02 Cs-134 <1.26E-02 0.00E+00 1.26E-02 Cs-137 <1.28E-02 0.00E+00 1.28E-02 Be-7 <9.29E-02 0.00E+00 9.29E-02 K-40 2.54E-01 1.69E-01 1.96E-01 Sample ID: 452318 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.09E-02 0.00E+00 2.09E-02 Cs-134 <1.57E-02 0.00E+00 1.57E-02 Cs-137 <1.65E-02 0.00E+00 1.65E-02 Be-7 <1.01E-01 0.00E+00 1.01E-01 K-40 2.09E-01 2.00E-01 3.04E-01 Sample ID: 452761 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.40E-02 0.00E+00 2.40E-02 Cs-134 <1.68E-02 0.00E+00 1.68E-02 Cs-137 <2.09E-02 0.00E+00 2.09E-02 Be-7 <1.29E-01 0.00E+00 1.29E-01 K-40 <4.60E-01 0.00E+00 4.60E-01 Sample ID: 453407 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.04E-02 0.00E+00 2.04E-02 Cs-134 <1.49E-02 0.00E+00 1.49E-02 Cs-137 <1.64E-02 0.00E+00 1.64E-02 Be-7 <1.26E-01 0.00E+00 1.26E-01 K-40 3.79E-01 1.77E-01 5.41E-02 Sample ID: 454173 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.60E-02 0.00E+00 1.60E-02 Cs-134 <2.14E-02 0.00E+00 2.14E-02 Cs-137 <1.99E-02 0.00E+00 1.99E-02 Be-7 <1.23E-01 0.00E+00 1.23E-01 K-40 <4.13E-01 0.00E+00 4.13E-01 Sample ID: 455033 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.91E-02 0.00E+00 2.91E-02 Cs-134 <2.22E-02 0.00E+00 2.22E-02 Cs-137 <3.00E-02 0.00E+00 3.00E-02 Be-7 <1.87E-01 0.00E+00 1.87E-01 K-40 6.66E-01 2.58E-01 6.45E-02 Sample ID: 455388 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.80E-02 0.00E+00 2.80E-02 Cs-134 <3.11E-02 0.00E+00 3.11E-02 Cs-137 <3.63E-02 0.00E+00 3.63E-02 Be-7 <1.64E-01 0.00E+00 1.64E-01 K-40 6.21E-01 2.76E-01 2.73E-01 Sample ID: 456005 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.23E-02 0.00E+00 3.23E-02 Cs-134 <3.14E-02 0.00E+00 3.14E-02 Cs-137 <2.84E-02 0.00E+00 2.84E-02 Be-7 <1.64E-01 0.00E+00 1.64E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 48 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 204 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 456005 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA K-40 5.16E-01 3.06E-01 4.02E-01 Sample ID: 461389 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.03E-02 0.00E+00 4.03E-02 Cs-134 <3.82E-02 0.00E+00 3.82E-02 Cs-137 <3.72E-02 0.00E+00 3.72E-02 Be-7 <2.02E-01 0.00E+00 2.02E-01 K-40 8.41E-01 4.08E-01 5.26E-01 Sample ID: 461935 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.14E-02 0.00E+00 5.14E-02 Cs-134 <2.16E-02 0.00E+00 2.16E-02 Cs-137 <2.50E-02 0.00E+00 2.50E-02 Be-7 <1.77E-01 0.00E+00 1.77E-01 K-40 6.28E-01 2.59E-01 3.37E-01 Sample ID: 462571 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.41E-02 0.00E+00 4.41E-02 Cs-134 <3.30E-02 0.00E+00 3.30E-02 Cs-137 <3.53E-02 0.00E+00 3.53E-02 Be-7 <2.28E-01 0.00E+00 2.28E-01 K-40 1.01E+00 3.98E-01 4.34E-01 Sample ID: 463055 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.28E-02 0.00E+00 4.28E-02 Cs-134 <4.53E-02 0.00E+00 4.53E-02 Cs-137 <3.94E-02 0.00E+00 3.94E-02 Be-7 <2.79E-01 0.00E+00 2.79E-01 K-40 1.00E+00 3.77E-01 3.64E-01 Sample ID: 463479 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.54E-02 0.00E+00 5.54E-02 Cs-134 <2.41E-02 0.00E+00 2.41E-02 Cs-137 <2.66E-02 0.00E+00 2.66E-02 Be-7 <2.13E-01 0.00E+00 2.13E-01 K-40 8.33E-01 2.86E-01 3.12E-01 Sample ID: 464138 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.64E-02 0.00E+00 4.64E-02 Cs-134 <3.77E-02 0.00E+00 3.77E-02 Cs-137 <2.88E-02 0.00E+00 2.88E-02 Be-7 <2.40E-01 0.00E+00 2.40E-01 K-40 8.60E-01 3.81E-01 4.44E-01 Sample ID: 464668 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.88E-02 0.00E+00 4.88E-02 Cs-134 <4.11E-02 0.00E+00 4.11E-02 Cs-137 <3.41E-02 0.00E+00 3.41E-02 Be-7 <2.64E-01 0.00E+00 2.64E-01 K-40 1.00E+00 4.32E-01 5.27E-01 Sample ID: 464929 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.99E-02 0.00E+00 4.99E-02 Cs-134 <3.55E-02 0.00E+00 3.55E-02 Cs-137 <2.78E-02 0.00E+00 2.78E-02 Be-7 <2.50E-01 0.00E+00 2.50E-01 K-40 7.87E-01 3.46E-01 3.71E-01 Sample ID: 465184 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.49E-02 0.00E+00 4.49E-02 Cs-134 <2.94E-02 0.00E+00 2.94E-02 Cs-137 <4.10E-02 0.00E+00 4.10E-02 Be-7 <2.29E-01 0.00E+00 2.29E-01 K-40 8.05E-01 3.83E-01 4.68E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 49 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 204 Sample Point 204 [ CONTROL - NNE @ 22.4 miles ]

Sample ID: 465566 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.27E-02 0.00E+00 5.27E-02 Cs-134 <2.37E-02 0.00E+00 2.37E-02 Cs-137 <2.22E-02 0.00E+00 2.22E-02 Be-7 <1.60E-01 0.00E+00 1.60E-01 K-40 1.06E+00 2.72E-01 2.72E-01 Sample ID: 465946 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA I-131 <5.58E-02 0.00E+00 5.58E-02 Cs-134 <2.82E-02 0.00E+00 2.82E-02 Cs-137 <2.98E-02 0.00E+00 2.98E-02 Be-7 <1.96E-01 0.00E+00 1.96E-01 K-40 9.59E-01 2.81E-01 2.31E-01 Sample Point 205 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 432174 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.73E-02 0.00E+00 1.73E-02 Cs-134 <1.64E-02 0.00E+00 1.64E-02 Cs-137 <1.93E-02 0.00E+00 1.93E-02 Be-7 <1.27E-01 0.00E+00 1.27E-01 K-40 <6.10E-01 0.00E+00 6.10E-01 Sample ID: 432879 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.13E-02 0.00E+00 1.13E-02 Cs-134 <1.38E-02 0.00E+00 1.38E-02 Cs-137 <2.47E-02 0.00E+00 2.47E-02 Be-7 <1.34E-01 0.00E+00 1.34E-01 K-40 7.73E-01 3.05E-01 2.88E-01 Sample ID: 433279 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.54E-02 0.00E+00 1.54E-02 Cs-134 <1.50E-02 0.00E+00 1.50E-02 Cs-137 <1.34E-02 0.00E+00 1.34E-02 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 9.18E-01 2.92E-01 5.79E-02 Sample ID: 433696 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.63E-02 0.00E+00 1.63E-02 Cs-134 <1.30E-02 0.00E+00 1.30E-02 Cs-137 <1.76E-02 0.00E+00 1.76E-02 Be-7 <1.30E-01 0.00E+00 1.30E-01 K-40 7.02E-01 3.42E-01 4.28E-01 Sample ID: 434431 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.79E-02 0.00E+00 1.79E-02 Cs-134 <1.44E-02 0.00E+00 1.44E-02 Cs-137 <1.92E-02 0.00E+00 1.92E-02 Be-7 <1.39E-01 0.00E+00 1.39E-01 K-40 9.68E-01 3.78E-01 4.20E-01 Sample ID: 435075 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.01E-02 0.00E+00 2.01E-02 Cs-134 <1.66E-02 0.00E+00 1.66E-02 Cs-137 <1.80E-02 0.00E+00 1.80E-02 Be-7 <1.33E-01 0.00E+00 1.33E-01 K-40 9.71E-01 3.30E-01 2.44E-01 Sample ID: 435785 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.43E-02 0.00E+00 2.43E-02 Cs-134 <1.74E-02 0.00E+00 1.74E-02 Cs-137 <2.05E-02 0.00E+00 2.05E-02 Be-7 <1.06E-01 0.00E+00 1.06E-01 K-40 <6.27E-01 0.00E+00 6.27E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 50 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 205 Sample Point 205 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 436235 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.89E-02 0.00E+00 1.89E-02 Cs-134 <1.55E-02 0.00E+00 1.55E-02 Cs-137 <1.79E-02 0.00E+00 1.79E-02 Be-7 <1.15E-01 0.00E+00 1.15E-01 K-40 <6.49E-01 0.00E+00 6.49E-01 Sample ID: 436686 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.76E-02 0.00E+00 1.76E-02 Cs-134 <1.54E-02 0.00E+00 1.54E-02 Cs-137 <1.91E-02 0.00E+00 1.91E-02 Be-7 <1.52E-01 0.00E+00 1.52E-01 K-40 8.97E-01 3.13E-01 2.26E-01 Sample ID: 437547 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.85E-02 0.00E+00 1.85E-02 Cs-134 <9.45E-03 0.00E+00 9.45E-03 Cs-137 <1.90E-02 0.00E+00 1.90E-02 Be-7 <1.30E-01 0.00E+00 1.30E-01 K-40 8.74E-01 2.83E-01 5.78E-02 Sample ID: 438277 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.69E-02 0.00E+00 1.69E-02 Cs-134 <1.84E-02 0.00E+00 1.84E-02 Cs-137 <1.85E-02 0.00E+00 1.85E-02 Be-7 <9.15E-02 0.00E+00 9.15E-02 K-40 7.06E-01 2.94E-01 2.90E-01 Sample ID: 438780 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.28E-02 0.00E+00 1.28E-02 Cs-134 <9.68E-03 0.00E+00 9.68E-03 Cs-137 <1.56E-02 0.00E+00 1.56E-02 Be-7 <1.57E-01 0.00E+00 1.57E-01 K-40 8.31E-01 2.78E-01 5.92E-02 Sample ID: 439130 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.82E-02 0.00E+00 1.82E-02 Cs-134 <1.57E-02 0.00E+00 1.57E-02 Cs-137 <1.28E-02 0.00E+00 1.28E-02 Be-7 <1.17E-01 0.00E+00 1.17E-01 K-40 6.29E-01 2.48E-01 6.31E-02 Sample ID: 439976 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.27E-02 0.00E+00 2.27E-02 Cs-134 <1.17E-02 0.00E+00 1.17E-02 Cs-137 <1.76E-02 0.00E+00 1.76E-02 Be-7 <1.30E-01 0.00E+00 1.30E-01 K-40 7.59E-01 2.85E-01 2.07E-01 Sample ID: 440574 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.86E-02 0.00E+00 1.86E-02 Cs-134 <1.31E-02 0.00E+00 1.31E-02 Cs-137 <1.34E-02 0.00E+00 1.34E-02 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 7.47E-01 2.61E-01 5.78E-02 Sample ID: 441388 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.71E-02 0.00E+00 1.71E-02 Cs-134 <1.04E-02 0.00E+00 1.04E-02 Cs-137 <1.11E-02 0.00E+00 1.11E-02 Be-7 <1.02E-01 0.00E+00 1.02E-01 K-40 7.77E-01 3.19E-01 3.54E-01 Sample ID: 441833 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.61E-02 0.00E+00 1.61E-02 Cs-134 <1.16E-02 0.00E+00 1.16E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 51 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 205 Sample Point 205 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 441833 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.57E-02 0.00E+00 1.57E-02 Be-7 <9.35E-02 0.00E+00 9.35E-02 K-40 9.06E-01 2.99E-01 2.08E-01 Sample ID: 442261 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.75E-02 0.00E+00 1.75E-02 Cs-134 <1.00E-02 0.00E+00 1.00E-02 Cs-137 <1.61E-02 0.00E+00 1.61E-02 Be-7 <1.22E-01 0.00E+00 1.22E-01 K-40 1.13E+00 3.35E-01 6.12E-02 Sample ID: 442847 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.51E-02 0.00E+00 1.51E-02 Cs-134 <1.49E-02 0.00E+00 1.49E-02 Cs-137 <1.48E-02 0.00E+00 1.48E-02 Be-7 <8.57E-02 0.00E+00 8.57E-02 K-40 7.61E-01 2.63E-01 5.73E-02 Sample ID: 443275 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.73E-02 0.00E+00 1.73E-02 Cs-134 <1.63E-02 0.00E+00 1.63E-02 Cs-137 <1.46E-02 0.00E+00 1.46E-02 Be-7 <1.11E-01 0.00E+00 1.11E-01 K-40 1.05E+00 3.24E-01 2.11E-01 Sample ID: 443833 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.78E-02 0.00E+00 1.78E-02 Cs-134 <1.75E-02 0.00E+00 1.75E-02 Cs-137 <1.93E-02 0.00E+00 1.93E-02 Be-7 <1.56E-01 0.00E+00 1.56E-01 K-40 <5.57E-01 0.00E+00 5.57E-01 Sample ID: 444227 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.27E-02 0.00E+00 2.27E-02 Cs-134 <1.30E-02 0.00E+00 1.30E-02 Cs-137 <1.14E-02 0.00E+00 1.14E-02 Be-7 <1.06E-01 0.00E+00 1.06E-01 K-40 7.21E-01 2.55E-01 5.74E-02 Sample ID: 445297 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.52E-02 0.00E+00 1.52E-02 Cs-134 <1.43E-02 0.00E+00 1.43E-02 Cs-137 <2.36E-02 0.00E+00 2.36E-02 Be-7 <1.15E-01 0.00E+00 1.15E-01 K-40 <3.82E-01 0.00E+00 3.82E-01 Sample ID: 446296 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.41E-02 0.00E+00 2.41E-02 Cs-134 <1.72E-02 0.00E+00 1.72E-02 Cs-137 <1.61E-02 0.00E+00 1.61E-02 Be-7 <1.21E-01 0.00E+00 1.21E-01 K-40 7.78E-01 2.65E-01 5.70E-02 Sample ID: 446800 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.37E-02 0.00E+00 2.37E-02 Cs-134 <1.31E-02 0.00E+00 1.31E-02 Cs-137 <2.25E-02 0.00E+00 2.25E-02 Be-7 <1.45E-01 0.00E+00 1.45E-01 K-40 3.97E-01 2.15E-01 2.16E-01 Sample ID: 447133 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.75E-02 0.00E+00 1.75E-02 Cs-134 <1.52E-02 0.00E+00 1.52E-02 Cs-137 <2.10E-02 0.00E+00 2.10E-02 Be-7 <1.35E-01 0.00E+00 1.35E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 52 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 205 Sample Point 205 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 447133 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA K-40 <4.78E-01 0.00E+00 4.78E-01 Sample ID: 447779 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.54E-02 0.00E+00 1.54E-02 Cs-134 <1.20E-02 0.00E+00 1.20E-02 Cs-137 <1.49E-02 0.00E+00 1.49E-02 Be-7 <8.80E-02 0.00E+00 8.80E-02 K-40 7.09E-01 2.94E-01 3.01E-01 Sample ID: 448243 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.09E-02 0.00E+00 2.09E-02 Cs-134 <1.30E-02 0.00E+00 1.30E-02 Cs-137 <2.61E-02 0.00E+00 2.61E-02 Be-7 <9.37E-02 0.00E+00 9.37E-02 K-40 <4.68E-01 0.00E+00 4.68E-01 Sample ID: 448869 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.73E-02 0.00E+00 1.73E-02 Cs-134 <1.37E-02 0.00E+00 1.37E-02 Cs-137 <1.70E-02 0.00E+00 1.70E-02 Be-7 <1.32E-01 0.00E+00 1.32E-01 K-40 6.00E-01 2.30E-01 5.61E-02 Sample ID: 449185 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.65E-02 0.00E+00 1.65E-02 Cs-134 <1.20E-02 0.00E+00 1.20E-02 Cs-137 <1.95E-02 0.00E+00 1.95E-02 Be-7 <9.72E-02 0.00E+00 9.72E-02 K-40 <3.71E-01 0.00E+00 3.71E-01 Sample ID: 449924 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.78E-02 0.00E+00 1.78E-02 Cs-134 <1.24E-02 0.00E+00 1.24E-02 Cs-137 <1.93E-02 0.00E+00 1.93E-02 Be-7 <1.16E-01 0.00E+00 1.16E-01 K-40 <4.22E-01 0.00E+00 4.22E-01 Sample ID: 450169 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.47E-02 0.00E+00 1.47E-02 Cs-134 <1.29E-02 0.00E+00 1.29E-02 Cs-137 <1.84E-02 0.00E+00 1.84E-02 Be-7 <8.61E-02 0.00E+00 8.61E-02 K-40 <4.49E-01 0.00E+00 4.49E-01 Sample ID: 450702 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.66E-02 0.00E+00 1.66E-02 Cs-134 <1.55E-02 0.00E+00 1.55E-02 Cs-137 <2.37E-02 0.00E+00 2.37E-02 Be-7 <1.05E-01 0.00E+00 1.05E-01 K-40 <5.52E-01 0.00E+00 5.52E-01 Sample ID: 451153 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.70E-02 0.00E+00 1.70E-02 Cs-134 <1.48E-02 0.00E+00 1.48E-02 Cs-137 <1.71E-02 0.00E+00 1.71E-02 Be-7 <1.48E-01 0.00E+00 1.48E-01 K-40 4.75E-01 2.32E-01 2.22E-01 Sample ID: 451515 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.02E-02 0.00E+00 2.02E-02 Cs-134 <2.99E-03 0.00E+00 2.99E-03 Cs-137 <2.39E-02 0.00E+00 2.39E-02 Be-7 <9.52E-02 0.00E+00 9.52E-02 K-40 <6.12E-01 0.00E+00 6.12E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 53 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 205 Sample Point 205 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 452319 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.51E-02 0.00E+00 1.51E-02 Cs-134 <1.43E-02 0.00E+00 1.43E-02 Cs-137 <1.51E-02 0.00E+00 1.51E-02 Be-7 <8.86E-02 0.00E+00 8.86E-02 K-40 5.95E-01 2.48E-01 2.00E-01 Sample ID: 452762 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.08E-02 0.00E+00 2.08E-02 Cs-134 <1.60E-02 0.00E+00 1.60E-02 Cs-137 <1.99E-02 0.00E+00 1.99E-02 Be-7 <1.29E-01 0.00E+00 1.29E-01 K-40 7.01E-01 2.59E-01 6.12E-02 Sample ID: 453408 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.56E-02 0.00E+00 1.56E-02 Cs-134 <1.77E-02 0.00E+00 1.77E-02 Cs-137 <1.78E-02 0.00E+00 1.78E-02 Be-7 <1.07E-01 0.00E+00 1.07E-01 K-40 3.21E-01 1.85E-01 1.82E-01 Sample ID: 454174 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.11E-02 0.00E+00 2.11E-02 Cs-134 <1.97E-02 0.00E+00 1.97E-02 Cs-137 <1.48E-02 0.00E+00 1.48E-02 Be-7 <1.16E-01 0.00E+00 1.16E-01 K-40 4.01E-01 2.21E-01 2.29E-01 Sample ID: 455034 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.14E-02 0.00E+00 4.14E-02 Cs-134 <3.64E-02 0.00E+00 3.64E-02 Cs-137 <3.27E-02 0.00E+00 3.27E-02 Be-7 <1.41E-01 0.00E+00 1.41E-01 K-40 <6.06E-01 0.00E+00 6.06E-01 Sample ID: 455389 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.66E-02 0.00E+00 3.66E-02 Cs-134 <3.39E-02 0.00E+00 3.39E-02 Cs-137 <3.37E-02 0.00E+00 3.37E-02 Be-7 <1.77E-01 0.00E+00 1.77E-01 K-40 4.59E-01 2.43E-01 2.45E-01 Sample ID: 456006 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.11E-02 0.00E+00 3.11E-02 Cs-134 <3.56E-02 0.00E+00 3.56E-02 Cs-137 <2.92E-02 0.00E+00 2.92E-02 Be-7 <2.05E-01 0.00E+00 2.05E-01 K-40 5.73E-01 2.76E-01 2.43E-01 Sample ID: 461390 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.83E-02 0.00E+00 4.83E-02 Cs-134 <3.64E-02 0.00E+00 3.64E-02 Cs-137 <4.11E-02 0.00E+00 4.11E-02 Be-7 <1.80E-01 0.00E+00 1.80E-01 K-40 1.05E+00 3.70E-01 2.89E-01 Sample ID: 461936 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.60E-02 0.00E+00 5.60E-02 Cs-134 <2.77E-02 0.00E+00 2.77E-02 Cs-137 <3.34E-02 0.00E+00 3.34E-02 Be-7 <2.33E-01 0.00E+00 2.33E-01 K-40 1.06E+00 3.57E-01 3.87E-01 Sample ID: 462572 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.36E-02 0.00E+00 4.36E-02 Cs-134 <3.63E-02 0.00E+00 3.63E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 54 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 205 Sample Point 205 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 462572 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <3.83E-02 0.00E+00 3.83E-02 Be-7 <2.59E-01 0.00E+00 2.59E-01 K-40 8.79E-01 3.53E-01 3.35E-01 Sample ID: 463056 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.01E-02 0.00E+00 5.01E-02 Cs-134 <3.58E-02 0.00E+00 3.58E-02 Cs-137 <3.74E-02 0.00E+00 3.74E-02 Be-7 <2.55E-01 0.00E+00 2.55E-01 K-40 1.18E+00 3.73E-01 7.46E-02 Sample ID: 463480 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.50E-02 0.00E+00 5.50E-02 Cs-134 <2.71E-02 0.00E+00 2.71E-02 Cs-137 <3.11E-02 0.00E+00 3.11E-02 Be-7 <1.96E-01 0.00E+00 1.96E-01 K-40 1.07E+00 2.83E-01 1.86E-01 Sample ID: 464139 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.61E-02 0.00E+00 4.61E-02 Cs-134 <3.25E-02 0.00E+00 3.25E-02 Cs-137 <4.01E-02 0.00E+00 4.01E-02 Be-7 <2.40E-01 0.00E+00 2.40E-01 K-40 9.05E-01 3.75E-01 3.88E-01 Sample ID: 464669 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.73E-02 0.00E+00 4.73E-02 Cs-134 <3.17E-02 0.00E+00 3.17E-02 Cs-137 <3.21E-02 0.00E+00 3.21E-02 Be-7 <2.36E-01 0.00E+00 2.36E-01 K-40 9.64E-01 3.80E-01 3.82E-01 Sample ID: 464930 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.87E-02 0.00E+00 3.87E-02 Cs-134 <2.67E-02 0.00E+00 2.67E-02 Cs-137 <2.77E-02 0.00E+00 2.77E-02 Be-7 <2.34E-01 0.00E+00 2.34E-01 K-40 1.22E+00 3.47E-01 3.43E-01 Sample ID: 465185 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.77E-02 0.00E+00 4.77E-02 Cs-134 <3.52E-02 0.00E+00 3.52E-02 Cs-137 <4.51E-02 0.00E+00 4.51E-02 Be-7 <2.92E-01 0.00E+00 2.92E-01 K-40 1.59E+00 4.62E-01 2.96E-01 Sample ID: 465567 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.26E-02 0.00E+00 5.26E-02 Cs-134 <2.37E-02 0.00E+00 2.37E-02 Cs-137 <2.03E-02 0.00E+00 2.03E-02 Be-7 <1.70E-01 0.00E+00 1.70E-01 K-40 8.68E-01 2.75E-01 3.29E-01 Sample ID: 465947 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA I-131 <5.07E-02 0.00E+00 5.07E-02 Cs-134 <2.52E-02 0.00E+00 2.52E-02 Cs-137 <2.44E-02 0.00E+00 2.44E-02 Be-7 <1.95E-01 0.00E+00 1.95E-01 K-40 1.06E+00 2.74E-01 2.32E-01 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 432175 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.03E-02 0.00E+00 2.03E-02 Cs-134 <1.73E-02 0.00E+00 1.73E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 55 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 206 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 432175 Sample Dates: 12/27/2016 - 1/3/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <2.15E-02 0.00E+00 2.15E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 8.09E-01 3.34E-01 3.43E-01 Sample ID: 432880 Sample Dates: 1/3/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.32E-02 0.00E+00 2.32E-02 Cs-134 <1.51E-02 0.00E+00 1.51E-02 Cs-137 <1.99E-02 0.00E+00 1.99E-02 Be-7 <9.30E-02 0.00E+00 9.30E-02 K-40 <6.64E-01 0.00E+00 6.64E-01 Sample ID: 433280 Sample Dates: 1/10/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.04E-02 0.00E+00 2.04E-02 Cs-134 <1.74E-02 0.00E+00 1.74E-02 Cs-137 <2.16E-02 0.00E+00 2.16E-02 Be-7 <1.48E-01 0.00E+00 1.48E-01 K-40 9.80E-01 3.35E-01 2.30E-01 Sample ID: 433697 Sample Dates: 1/17/2017 - 1/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.91E-02 0.00E+00 1.91E-02 Cs-134 <1.39E-02 0.00E+00 1.39E-02 Cs-137 <1.34E-02 0.00E+00 1.34E-02 Be-7 <1.22E-01 0.00E+00 1.22E-01 K-40 8.00E-01 2.86E-01 6.57E-02 Sample ID: 434432 Sample Dates: 1/24/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.76E-02 0.00E+00 1.76E-02 Cs-134 <1.70E-02 0.00E+00 1.70E-02 Cs-137 <2.01E-02 0.00E+00 2.01E-02 Be-7 <1.03E-01 0.00E+00 1.03E-01 K-40 5.60E-01 2.85E-01 3.40E-01 Sample ID: 435076 Sample Dates: 1/31/2017 - 2/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.36E-02 0.00E+00 1.36E-02 Cs-134 <1.42E-02 0.00E+00 1.42E-02 Cs-137 <9.94E-03 0.00E+00 9.94E-03 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 1.05E+00 3.21E-01 6.17E-02 Sample ID: 435786 Sample Dates: 2/7/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.57E-02 0.00E+00 2.57E-02 Cs-134 <1.98E-02 0.00E+00 1.98E-02 Cs-137 <1.77E-02 0.00E+00 1.77E-02 Be-7 <1.36E-01 0.00E+00 1.36E-01 K-40 8.44E-01 2.98E-01 6.73E-02 Sample ID: 436236 Sample Dates: 2/14/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.91E-02 0.00E+00 1.91E-02 Cs-134 <1.44E-02 0.00E+00 1.44E-02 Cs-137 <1.27E-02 0.00E+00 1.27E-02 Be-7 <6.47E-02 0.00E+00 6.47E-02 K-40 <6.89E-01 0.00E+00 6.89E-01 Sample ID: 436687 Sample Dates: 2/21/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.46E-02 0.00E+00 1.46E-02 Cs-134 <1.59E-02 0.00E+00 1.59E-02 Cs-137 <1.42E-02 0.00E+00 1.42E-02 Be-7 <1.11E-01 0.00E+00 1.11E-01 K-40 9.31E-01 2.98E-01 6.01E-02 Sample ID: 437548 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.46E-02 0.00E+00 2.46E-02 Cs-134 <1.59E-02 0.00E+00 1.59E-02 Cs-137 <1.67E-02 0.00E+00 1.67E-02 Be-7 <1.16E-01 0.00E+00 1.16E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 56 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 206 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 437548 Sample Dates: 2/28/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA K-40 7.40E-01 2.51E-01 5.42E-02 Sample ID: 438278 Sample Dates: 3/7/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.28E-02 0.00E+00 1.28E-02 Cs-134 <1.40E-02 0.00E+00 1.40E-02 Cs-137 <1.52E-02 0.00E+00 1.52E-02 Be-7 <9.98E-02 0.00E+00 9.98E-02 K-40 1.01E+00 2.98E-01 5.37E-02 Sample ID: 438781 Sample Dates: 3/14/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.96E-02 0.00E+00 1.96E-02 Cs-134 <1.77E-02 0.00E+00 1.77E-02 Cs-137 <2.08E-02 0.00E+00 2.08E-02 Be-7 <1.34E-01 0.00E+00 1.34E-01 K-40 5.89E-01 2.61E-01 2.33E-01 Sample ID: 439131 Sample Dates: 3/21/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.39E-02 0.00E+00 1.39E-02 Cs-134 <1.76E-02 0.00E+00 1.76E-02 Cs-137 <1.92E-02 0.00E+00 1.92E-02 Be-7 <1.31E-01 0.00E+00 1.31E-01 K-40 9.95E-01 3.01E-01 5.62E-02 Sample ID: 439977 Sample Dates: 3/28/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.26E-02 0.00E+00 2.26E-02 Cs-134 <1.41E-02 0.00E+00 1.41E-02 Cs-137 <1.75E-02 0.00E+00 1.75E-02 Be-7 <1.12E-01 0.00E+00 1.12E-01 K-40 4.59E-01 2.34E-01 2.57E-01 Sample ID: 440575 Sample Dates: 4/4/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.00E-02 0.00E+00 2.00E-02 Cs-134 <1.16E-02 0.00E+00 1.16E-02 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <1.22E-01 0.00E+00 1.22E-01 K-40 <6.54E-01 0.00E+00 6.54E-01 Sample ID: 441389 Sample Dates: 4/11/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.80E-02 0.00E+00 1.80E-02 Cs-134 <9.49E-03 0.00E+00 9.49E-03 Cs-137 <1.67E-02 0.00E+00 1.67E-02 Be-7 <1.07E-01 0.00E+00 1.07E-01 K-40 1.04E+00 3.49E-01 3.08E-01 Sample ID: 441834 Sample Dates: 4/18/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.03E-02 0.00E+00 2.03E-02 Cs-134 <1.28E-02 0.00E+00 1.28E-02 Cs-137 <1.59E-02 0.00E+00 1.59E-02 Be-7 <1.11E-01 0.00E+00 1.11E-01 K-40 9.11E-01 3.44E-01 3.66E-01 Sample ID: 442262 Sample Dates: 4/25/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.25E-02 0.00E+00 1.25E-02 Cs-134 <1.05E-02 0.00E+00 1.05E-02 Cs-137 <1.71E-02 0.00E+00 1.71E-02 Be-7 <1.03E-01 0.00E+00 1.03E-01 K-40 <5.79E-01 0.00E+00 5.79E-01 Sample ID: 442848 Sample Dates: 5/2/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.88E-02 0.00E+00 1.88E-02 Cs-134 <1.80E-02 0.00E+00 1.80E-02 Cs-137 <1.61E-02 0.00E+00 1.61E-02 Be-7 <1.57E-01 0.00E+00 1.57E-01 K-40 9.41E-01 3.32E-01 2.83E-01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 57 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 206 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 443276 Sample Dates: 5/9/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.77E-02 0.00E+00 1.77E-02 Cs-134 <1.70E-02 0.00E+00 1.70E-02 Cs-137 <1.74E-02 0.00E+00 1.74E-02 Be-7 <1.03E-01 0.00E+00 1.03E-01 K-40 7.93E-01 2.91E-01 2.13E-01 Sample ID: 443834 Sample Dates: 5/16/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.04E-02 0.00E+00 2.04E-02 Cs-134 <1.54E-02 0.00E+00 1.54E-02 Cs-137 <1.91E-02 0.00E+00 1.91E-02 Be-7 <1.03E-01 0.00E+00 1.03E-01 K-40 6.93E-01 2.97E-01 3.27E-01 Sample ID: 444228 Sample Dates: 5/23/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.35E-02 0.00E+00 2.35E-02 Cs-134 <1.80E-02 0.00E+00 1.80E-02 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <1.23E-01 0.00E+00 1.23E-01 K-40 3.73E-01 2.06E-01 2.07E-01 Sample ID: 445298 Sample Dates: 5/30/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.07E-02 0.00E+00 1.07E-02 Cs-134 <1.15E-02 0.00E+00 1.15E-02 Cs-137 <1.89E-02 0.00E+00 1.89E-02 Be-7 <1.41E-01 0.00E+00 1.41E-01 K-40 5.94E-01 2.27E-01 5.55E-02 Sample ID: 446297 Sample Dates: 6/6/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.69E-02 0.00E+00 1.69E-02 Cs-134 <1.46E-02 0.00E+00 1.46E-02 Cs-137 <2.25E-02 0.00E+00 2.25E-02 Be-7 <1.40E-01 0.00E+00 1.40E-01 K-40 4.98E-01 2.55E-01 2.87E-01 Sample ID: 446801 Sample Dates: 6/13/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.54E-02 0.00E+00 1.54E-02 Cs-134 <1.30E-02 0.00E+00 1.30E-02 Cs-137 <1.45E-02 0.00E+00 1.45E-02 Be-7 <9.40E-02 0.00E+00 9.40E-02 K-40 8.64E-01 2.89E-01 6.16E-02 Sample ID: 447134 Sample Dates: 6/20/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.19E-02 0.00E+00 1.19E-02 Cs-134 <1.55E-02 0.00E+00 1.55E-02 Cs-137 <2.16E-02 0.00E+00 2.16E-02 Be-7 <1.32E-01 0.00E+00 1.32E-01 K-40 <4.90E-01 0.00E+00 4.90E-01 Sample ID: 447780 Sample Dates: 6/27/2017 - 7/4/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.79E-02 0.00E+00 1.79E-02 Cs-134 <1.51E-02 0.00E+00 1.51E-02 Cs-137 <1.44E-02 0.00E+00 1.44E-02 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 4.66E-01 2.22E-01 1.87E-01 Sample ID: 448244 Sample Dates: 7/4/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.85E-02 0.00E+00 1.85E-02 Cs-134 <1.67E-02 0.00E+00 1.67E-02 Cs-137 <1.34E-02 0.00E+00 1.34E-02 Be-7 <1.47E-01 0.00E+00 1.47E-01 K-40 <4.72E-01 0.00E+00 4.72E-01 Sample ID: 448870 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.50E-02 0.00E+00 1.50E-02 Cs-134 <1.06E-02 0.00E+00 1.06E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 58 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 206 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 448870 Sample Dates: 7/11/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.14E-02 0.00E+00 1.14E-02 Be-7 <1.20E-01 0.00E+00 1.20E-01 K-40 4.00E-01 2.20E-01 2.49E-01 Sample ID: 449186 Sample Dates: 7/18/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.99E-02 0.00E+00 1.99E-02 Cs-134 <1.08E-02 0.00E+00 1.08E-02 Cs-137 <2.09E-02 0.00E+00 2.09E-02 Be-7 <1.07E-01 0.00E+00 1.07E-01 K-40 <4.25E-01 0.00E+00 4.25E-01 Sample ID: 449925 Sample Dates: 7/25/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.70E-02 0.00E+00 1.70E-02 Cs-134 <1.45E-02 0.00E+00 1.45E-02 Cs-137 <1.80E-02 0.00E+00 1.80E-02 Be-7 <1.07E-01 0.00E+00 1.07E-01 K-40 2.32E-01 1.48E-01 6.28E-02 Sample ID: 450170 Sample Dates: 8/1/2017 - 8/8/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.92E-02 0.00E+00 1.92E-02 Cs-134 <1.24E-02 0.00E+00 1.24E-02 Cs-137 <2.33E-02 0.00E+00 2.33E-02 Be-7 <8.98E-02 0.00E+00 8.98E-02 K-40 5.16E-01 2.34E-01 2.01E-01 Sample ID: 450703 Sample Dates: 8/8/2017 - 8/15/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.71E-02 0.00E+00 1.71E-02 Cs-134 <1.11E-02 0.00E+00 1.11E-02 Cs-137 <2.33E-02 0.00E+00 2.33E-02 Be-7 <9.95E-02 0.00E+00 9.95E-02 K-40 4.99E-01 2.27E-01 1.87E-01 Sample ID: 451154 Sample Dates: 8/15/2017 - 8/22/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.96E-02 0.00E+00 1.96E-02 Cs-134 <1.45E-02 0.00E+00 1.45E-02 Cs-137 <2.09E-02 0.00E+00 2.09E-02 Be-7 <1.54E-01 0.00E+00 1.54E-01 K-40 3.50E-01 2.29E-01 3.05E-01 Sample ID: 451516 Sample Dates: 8/22/2017 - 8/29/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.77E-02 0.00E+00 1.77E-02 Cs-134 <1.33E-02 0.00E+00 1.33E-02 Cs-137 <1.65E-02 0.00E+00 1.65E-02 Be-7 <1.06E-01 0.00E+00 1.06E-01 K-40 <4.01E-01 0.00E+00 4.01E-01 Sample ID: 452320 Sample Dates: 8/29/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.14E-02 0.00E+00 2.14E-02 Cs-134 <1.01E-02 0.00E+00 1.01E-02 Cs-137 <2.03E-02 0.00E+00 2.03E-02 Be-7 <1.24E-01 0.00E+00 1.24E-01 K-40 3.54E-01 2.02E-01 2.07E-01 Sample ID: 452763 Sample Dates: 9/5/2017 - 9/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.51E-02 0.00E+00 1.51E-02 Cs-134 <9.11E-03 0.00E+00 9.11E-03 Cs-137 <2.03E-02 0.00E+00 2.03E-02 Be-7 <8.62E-02 0.00E+00 8.62E-02 K-40 <4.80E-01 0.00E+00 4.80E-01 Sample ID: 453409 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.78E-02 0.00E+00 1.78E-02 Cs-134 <7.97E-03 0.00E+00 7.97E-03 Cs-137 <1.90E-02 0.00E+00 1.90E-02 Be-7 <9.35E-02 0.00E+00 9.35E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 59 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 206 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 453409 Sample Dates: 9/12/2017 - 9/19/2017 Nuclide Activity 2 Sigma Error MDA K-40 4.08E-01 1.95E-01 6.14E-02 Sample ID: 454175 Sample Dates: 9/19/2017 - 9/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <1.65E-02 0.00E+00 1.65E-02 Cs-134 <1.81E-02 0.00E+00 1.81E-02 Cs-137 <1.51E-02 0.00E+00 1.51E-02 Be-7 <1.14E-01 0.00E+00 1.14E-01 K-40 3.19E-01 1.67E-01 5.76E-02 Sample ID: 455035 Sample Dates: 9/26/2017 - 10/3/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.70E-02 0.00E+00 3.70E-02 Cs-134 <3.49E-02 0.00E+00 3.49E-02 Cs-137 <2.16E-02 0.00E+00 2.16E-02 Be-7 <2.03E-01 0.00E+00 2.03E-01 K-40 <6.67E-01 0.00E+00 6.67E-01 Sample ID: 455390 Sample Dates: 10/3/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA I-131 <3.89E-02 0.00E+00 3.89E-02 Cs-134 <3.22E-02 0.00E+00 3.22E-02 Cs-137 <2.47E-02 0.00E+00 2.47E-02 Be-7 <2.04E-01 0.00E+00 2.04E-01 K-40 6.49E-01 3.33E-01 4.01E-01 Sample ID: 456007 Sample Dates: 10/10/2017 - 10/17/2017 Nuclide Activity 2 Sigma Error MDA I-131 <2.99E-02 0.00E+00 2.99E-02 Cs-134 <2.94E-02 0.00E+00 2.94E-02 Cs-137 <2.26E-02 0.00E+00 2.26E-02 Be-7 <1.95E-01 0.00E+00 1.95E-01 K-40 <5.28E-01 0.00E+00 5.28E-01 Sample ID: 461391 Sample Dates: 10/17/2017 - 10/24/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.11E-02 0.00E+00 4.11E-02 Cs-134 <3.27E-02 0.00E+00 3.27E-02 Cs-137 <3.47E-02 0.00E+00 3.47E-02 Be-7 <2.56E-01 0.00E+00 2.56E-01 K-40 <8.55E-01 0.00E+00 8.55E-01 Sample ID: 461937 Sample Dates: 10/24/2017 - 10/31/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.58E-02 0.00E+00 5.58E-02 Cs-134 <2.72E-02 0.00E+00 2.72E-02 Cs-137 <2.67E-02 0.00E+00 2.67E-02 Be-7 <2.26E-01 0.00E+00 2.26E-01 K-40 1.15E+00 3.26E-01 2.66E-01 Sample ID: 462573 Sample Dates: 10/31/2017 - 11/7/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.19E-02 0.00E+00 4.19E-02 Cs-134 <4.05E-02 0.00E+00 4.05E-02 Cs-137 <4.00E-02 0.00E+00 4.00E-02 Be-7 <2.15E-01 0.00E+00 2.15E-01 K-40 9.07E-01 4.17E-01 5.19E-01 Sample ID: 463057 Sample Dates: 11/7/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.19E-02 0.00E+00 5.19E-02 Cs-134 <3.48E-02 0.00E+00 3.48E-02 Cs-137 <3.53E-02 0.00E+00 3.53E-02 Be-7 <2.22E-01 0.00E+00 2.22E-01 K-40 1.10E+00 3.54E-01 7.26E-02 Sample ID: 463481 Sample Dates: 11/14/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.54E-02 0.00E+00 5.54E-02 Cs-134 <2.54E-02 0.00E+00 2.54E-02 Cs-137 <2.57E-02 0.00E+00 2.57E-02 Be-7 <2.00E-01 0.00E+00 2.00E-01 K-40 1.36E+00 3.21E-01 4.55E-02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 60 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 206 Sample Point 206 [ CONTROL - NW @ 11.3 miles ]

Sample ID: 464140 Sample Dates: 11/21/2017 - 11/28/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.53E-02 0.00E+00 4.53E-02 Cs-134 <3.50E-02 0.00E+00 3.50E-02 Cs-137 <3.44E-02 0.00E+00 3.44E-02 Be-7 <1.98E-01 0.00E+00 1.98E-01 K-40 1.23E+00 4.43E-01 4.56E-01 Sample ID: 464670 Sample Dates: 11/28/2017 - 12/5/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.55E-02 0.00E+00 5.55E-02 Cs-134 <3.37E-02 0.00E+00 3.37E-02 Cs-137 <3.60E-02 0.00E+00 3.60E-02 Be-7 <2.41E-01 0.00E+00 2.41E-01 K-40 1.02E+00 3.67E-01 3.87E-01 Sample ID: 464931 Sample Dates: 12/5/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA I-131 <5.28E-02 0.00E+00 5.28E-02 Cs-134 <3.38E-02 0.00E+00 3.38E-02 Cs-137 <3.88E-02 0.00E+00 3.88E-02 Be-7 <2.32E-01 0.00E+00 2.32E-01 K-40 1.08E+00 3.83E-01 3.15E-01 Sample ID: 465186 Sample Dates: 12/12/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.58E-02 0.00E+00 4.58E-02 Cs-134 <3.20E-02 0.00E+00 3.20E-02 Cs-137 <4.31E-02 0.00E+00 4.31E-02 Be-7 <2.22E-01 0.00E+00 2.22E-01 K-40 8.07E-01 3.70E-01 4.26E-01 Sample ID: 465568 Sample Dates: 12/19/2017 - 12/26/2017 Nuclide Activity 2 Sigma Error MDA I-131 <4.92E-02 0.00E+00 4.92E-02 Cs-134 <2.14E-02 0.00E+00 2.14E-02 Cs-137 <2.54E-02 0.00E+00 2.54E-02 Be-7 <1.77E-01 0.00E+00 1.77E-01 K-40 1.00E+00 3.09E-01 3.57E-01 Sample ID: 465948 Sample Dates: 12/26/2017 - 1/2/2018 Nuclide Activity 2 Sigma Error MDA I-131 <5.59E-02 0.00E+00 5.59E-02 Cs-134 <3.02E-02 0.00E+00 3.02E-02 Cs-137 <2.86E-02 0.00E+00 2.86E-02 Be-7 <2.05E-01 0.00E+00 2.05E-01 K-40 9.86E-01 2.92E-01 2.70E-01 Media Type: FISH Concentration (Activity): pCi/kg wet 700 Sample Point 700 [ INDICATOR - SSW @ 5.5 miles ]

Sample ID: 445250 Sample Dates: 5/18/2017 - 5/18/2017 FREESWIM Nuclide Activity 2 Sigma Error MDA Mn-54 <1.15E+01 0.00E+00 1.15E+01 Co-58 <2.03E+01 0.00E+00 2.03E+01 Fe-59 <3.03E+01 0.00E+00 3.03E+01 Co-60 <2.39E+01 0.00E+00 2.39E+01 Zn-65 <5.98E+01 0.00E+00 5.98E+01 Nb-95 <2.40E+01 0.00E+00 2.40E+01 I-131 <4.86E+01 0.00E+00 4.86E+01 Cs-134 <3.35E+01 0.00E+00 3.35E+01 Cs-137 <2.34E+01 0.00E+00 2.34E+01 Be-7 <1.85E+02 0.00E+00 1.85E+02 K-40 3.80E+03 6.94E+02 4.23E+02 Ag-110M <2.46E+01 0.00E+00 2.46E+01 Sb-122 <6.66E+02 0.00E+00 6.66E+02 Sb-125 <5.97E+01 0.00E+00 5.97E+01 Sample ID: 464779 Sample Dates: 11/16/2017 - 11/16/2017 FREESWIM Nuclide Activity 2 Sigma Error MDA Mn-54 <3.93E+01 0.00E+00 3.93E+01 Co-58 <5.53E+01 0.00E+00 5.53E+01 Fe-59 <1.03E+02 0.00E+00 1.03E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 61 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: FISH Concentration (Activity): pCi/kg wet 700 Sample Point 700 [ INDICATOR - SSW @ 5.5 miles ]

Sample ID: 464779 Sample Dates: 11/16/2017 - 11/16/2017 FREESWIM Nuclide Activity 2 Sigma Error MDA Co-60 <5.67E+01 0.00E+00 5.67E+01 Zn-65 <1.13E+02 0.00E+00 1.13E+02 Nb-95 <6.31E+01 0.00E+00 6.31E+01 I-131 <9.82E+01 0.00E+00 9.82E+01 Cs-134 <5.29E+01 0.00E+00 5.29E+01 Cs-137 <4.87E+01 0.00E+00 4.87E+01 Be-7 <3.07E+02 0.00E+00 3.07E+02 K-40 3.59E+03 9.20E+02 1.43E+02 Ag-110M <5.73E+01 0.00E+00 5.73E+01 Sb-122 <1.11E+03 0.00E+00 1.11E+03 Sb-125 <6.67E+01 0.00E+00 6.67E+01 Sample Point 701 [ INDICATOR - SSW @ 5.5 miles ]

Sample ID: 445251 Sample Dates: 5/18/2017 - 5/18/2017 BOTMFEEDER Nuclide Activity 2 Sigma Error MDA Mn-54 <2.08E+01 0.00E+00 2.08E+01 Co-58 <1.72E+01 0.00E+00 1.72E+01 Fe-59 <5.49E+01 0.00E+00 5.49E+01 Co-60 <2.52E+01 0.00E+00 2.52E+01 Zn-65 <4.05E+01 0.00E+00 4.05E+01 Nb-95 <2.61E+01 0.00E+00 2.61E+01 I-131 <4.78E+01 0.00E+00 4.78E+01 Cs-134 <2.45E+01 0.00E+00 2.45E+01 Cs-137 <2.09E+01 0.00E+00 2.09E+01 Be-7 <1.47E+02 0.00E+00 1.47E+02 K-40 2.97E+03 5.63E+02 2.41E+02 Ag-110M <1.68E+01 0.00E+00 1.68E+01 Sb-122 <4.50E+02 0.00E+00 4.50E+02 Sb-125 <4.32E+01 0.00E+00 4.32E+01 Sample ID: 464780 Sample Dates: 11/16/2017 - 11/16/2017 BOTMFEEDER Nuclide Activity 2 Sigma Error MDA Mn-54 <2.95E+01 0.00E+00 2.95E+01 Co-58 <3.97E+01 0.00E+00 3.97E+01 Fe-59 <5.99E+01 0.00E+00 5.99E+01 Co-60 <2.61E+01 0.00E+00 2.61E+01 Zn-65 <5.87E+01 0.00E+00 5.87E+01 Nb-95 <4.00E+01 0.00E+00 4.00E+01 I-131 <6.64E+01 0.00E+00 6.64E+01 Cs-134 <2.93E+01 0.00E+00 2.93E+01 Cs-137 <2.50E+01 0.00E+00 2.50E+01 Be-7 <2.73E+02 0.00E+00 2.73E+02 K-40 2.69E+03 6.86E+02 4.22E+02 Ag-110M <2.79E+01 0.00E+00 2.79E+01 Sb-122 <7.56E+02 0.00E+00 7.56E+02 Sb-125 <8.42E+01 0.00E+00 8.42E+01 Sample Point 702 [ INDICATOR - SSW @ 5.5 miles ]

Sample ID: 445252 Sample Dates: 5/18/2017 - 5/18/2017 INVERTEBRA Nuclide Activity 2 Sigma Error MDA Mn-54 <1.45E+01 0.00E+00 1.45E+01 Co-58 <1.22E+01 0.00E+00 1.22E+01 Fe-59 <4.19E+01 0.00E+00 4.19E+01 Co-60 <2.26E+01 0.00E+00 2.26E+01 Zn-65 <4.36E+01 0.00E+00 4.36E+01 Nb-95 <2.14E+01 0.00E+00 2.14E+01 I-131 <3.92E+01 0.00E+00 3.92E+01 Cs-134 <1.89E+01 0.00E+00 1.89E+01 Cs-137 <1.37E+01 0.00E+00 1.37E+01 Be-7 <1.28E+02 0.00E+00 1.28E+02 K-40 3.42E+03 5.74E+02 2.41E+02 Ag-110M <1.48E+01 0.00E+00 1.48E+01 Sb-122 <3.69E+02 0.00E+00 3.69E+02 Sb-125 <3.75E+01 0.00E+00 3.75E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 62 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: FISH Concentration (Activity): pCi/kg wet 702 Sample Point 702 [ INDICATOR - SSW @ 5.5 miles ]

Sample ID: 464781 Sample Dates: 11/16/2017 - 11/16/2017 INVERTEBRA Nuclide Activity 2 Sigma Error MDA Mn-54 <2.05E+01 0.00E+00 2.05E+01 Co-58 <2.85E+01 0.00E+00 2.85E+01 Fe-59 <6.95E+01 0.00E+00 6.95E+01 Co-60 <3.82E+01 0.00E+00 3.82E+01 Zn-65 <6.10E+01 0.00E+00 6.10E+01 Nb-95 <3.82E+01 0.00E+00 3.82E+01 I-131 <5.59E+01 0.00E+00 5.59E+01 Cs-134 <2.93E+01 0.00E+00 2.93E+01 Cs-137 <2.73E+01 0.00E+00 2.73E+01 Be-7 <2.45E+02 0.00E+00 2.45E+02 K-40 3.06E+03 6.72E+02 8.63E+01 Ag-110M <2.87E+01 0.00E+00 2.87E+01 Sb-122 <7.63E+02 0.00E+00 7.63E+02 Sb-125 <4.66E+01 0.00E+00 4.66E+01 Sample Point 703 [ CONTROL - -- @ 0 miles ]

Sample ID: 445253 Sample Dates: 5/18/2017 - 5/18/2017 FREESWIM Nuclide Activity 2 Sigma Error MDA Mn-54 <1.80E+01 0.00E+00 1.80E+01 Co-58 <1.51E+01 0.00E+00 1.51E+01 Fe-59 <4.25E+01 0.00E+00 4.25E+01 Co-60 <2.29E+01 0.00E+00 2.29E+01 Zn-65 <5.39E+01 0.00E+00 5.39E+01 Nb-95 <2.64E+01 0.00E+00 2.64E+01 I-131 <5.62E+01 0.00E+00 5.62E+01 Cs-134 <2.49E+01 0.00E+00 2.49E+01 Cs-137 <2.25E+01 0.00E+00 2.25E+01 Be-7 <1.76E+02 0.00E+00 1.76E+02 K-40 4.09E+03 6.88E+02 2.74E+02 Ag-110M <1.83E+01 0.00E+00 1.83E+01 Sb-122 <6.63E+02 0.00E+00 6.63E+02 Sb-125 <4.63E+01 0.00E+00 4.63E+01 Sample ID: 464782 Sample Dates: 11/16/2017 - 11/16/2017 FREESWIM Nuclide Activity 2 Sigma Error MDA Mn-54 <2.95E+01 0.00E+00 2.95E+01 Co-58 <3.46E+01 0.00E+00 3.46E+01 Fe-59 <4.73E+01 0.00E+00 4.73E+01 Co-60 <4.26E+01 0.00E+00 4.26E+01 Zn-65 <4.65E+01 0.00E+00 4.65E+01 Nb-95 <3.04E+01 0.00E+00 3.04E+01 I-131 <7.61E+01 0.00E+00 7.61E+01 Cs-134 <2.93E+01 0.00E+00 2.93E+01 Cs-137 <3.05E+01 0.00E+00 3.05E+01 Be-7 <2.25E+02 0.00E+00 2.25E+02 K-40 3.19E+03 7.25E+02 9.62E+01 Ag-110M <2.55E+01 0.00E+00 2.55E+01 Sb-122 <9.01E+02 0.00E+00 9.01E+02 Sb-125 <6.33E+01 0.00E+00 6.33E+01 Sample Point 704 [ CONTROL - -- @ 0 miles ]

Sample ID: 445254 Sample Dates: 5/18/2017 - 5/18/2017 BOTMFEEDER Nuclide Activity 2 Sigma Error MDA Mn-54 <2.72E+01 0.00E+00 2.72E+01 Co-58 <2.32E+01 0.00E+00 2.32E+01 Fe-59 <4.02E+01 0.00E+00 4.02E+01 Co-60 <6.33E+00 0.00E+00 6.33E+00 Zn-65 <3.89E+01 0.00E+00 3.89E+01 Nb-95 <2.71E+01 0.00E+00 2.71E+01 I-131 <4.18E+01 0.00E+00 4.18E+01 Cs-134 <2.55E+01 0.00E+00 2.55E+01 Cs-137 <2.80E+01 0.00E+00 2.80E+01 Be-7 <1.84E+02 0.00E+00 1.84E+02 K-40 3.83E+03 7.06E+02 4.04E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 63 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: FISH Concentration (Activity): pCi/kg wet 704 Sample Point 704 [ CONTROL - -- @ 0 miles ]

Sample ID: 445254 Sample Dates: 5/18/2017 - 5/18/2017 BOTMFEEDER Nuclide Activity 2 Sigma Error MDA Ag-110M <1.86E+01 0.00E+00 1.86E+01 Sb-122 <7.96E+02 0.00E+00 7.96E+02 Sb-125 <5.09E+01 0.00E+00 5.09E+01 Sample ID: 464783 Sample Dates: 11/16/2017 - 11/16/2017 BOTMFEEDER Nuclide Activity 2 Sigma Error MDA Mn-54 <3.48E+01 0.00E+00 3.48E+01 Co-58 <3.73E+01 0.00E+00 3.73E+01 Fe-59 <7.75E+01 0.00E+00 7.75E+01 Co-60 <9.63E+00 0.00E+00 9.63E+00 Zn-65 <7.61E+01 0.00E+00 7.61E+01 Nb-95 <3.72E+01 0.00E+00 3.72E+01 I-131 <6.56E+01 0.00E+00 6.56E+01 Cs-134 <3.85E+01 0.00E+00 3.85E+01 Cs-137 <2.17E+01 0.00E+00 2.17E+01 Be-7 <2.26E+02 0.00E+00 2.26E+02 K-40 2.85E+03 6.79E+02 9.65E+01 Ag-110M <1.98E+01 0.00E+00 1.98E+01 Sb-122 <7.73E+02 0.00E+00 7.73E+02 Sb-125 <6.83E+01 0.00E+00 6.83E+01 Sample Point 705 [ CONTROL - -- @ 0 miles ]

Sample ID: 445255 Sample Dates: 5/18/2017 - 5/18/2017 INVERTEBRA Nuclide Activity 2 Sigma Error MDA Mn-54 <1.70E+01 0.00E+00 1.70E+01 Co-58 <1.40E+01 0.00E+00 1.40E+01 Fe-59 <4.48E+01 0.00E+00 4.48E+01 Co-60 <2.24E+01 0.00E+00 2.24E+01 Zn-65 <4.87E+01 0.00E+00 4.87E+01 Nb-95 <1.99E+01 0.00E+00 1.99E+01 I-131 <4.08E+01 0.00E+00 4.08E+01 Cs-134 <2.00E+01 0.00E+00 2.00E+01 Cs-137 <1.60E+01 0.00E+00 1.60E+01 Be-7 <1.28E+02 0.00E+00 1.28E+02 K-40 3.18E+03 5.43E+02 2.35E+02 Ag-110M <1.25E+01 0.00E+00 1.25E+01 Sb-122 <4.04E+02 0.00E+00 4.04E+02 Sb-125 <2.83E+01 0.00E+00 2.83E+01 Sample ID: 464784 Sample Dates: 11/16/2017 - 11/16/2017 INVERTEBRA Nuclide Activity 2 Sigma Error MDA Mn-54 <3.00E+01 0.00E+00 3.00E+01 Co-58 <2.64E+01 0.00E+00 2.64E+01 Fe-59 <7.82E+01 0.00E+00 7.82E+01 Co-60 <3.05E+01 0.00E+00 3.05E+01 Zn-65 <7.68E+01 0.00E+00 7.68E+01 Nb-95 <3.45E+01 0.00E+00 3.45E+01 I-131 <6.65E+01 0.00E+00 6.65E+01 Cs-134 <3.04E+01 0.00E+00 3.04E+01 Cs-137 <2.60E+01 0.00E+00 2.60E+01 Be-7 <2.88E+02 0.00E+00 2.88E+02 K-40 2.84E+03 7.39E+02 6.48E+02 Ag-110M <2.59E+01 0.00E+00 2.59E+01 Sb-122 <5.71E+02 0.00E+00 5.71E+02 Sb-125 <6.68E+01 0.00E+00 6.68E+01 Sample Point 706 [ INDICATOR - -- @ 0 miles ]

Sample ID: 464785 Sample Dates: 9/19/2017 - 11/7/2017 FREESWIM Nuclide Activity 2 Sigma Error MDA Mn-54 <3.65E+01 0.00E+00 3.65E+01 Co-58 <3.58E+01 0.00E+00 3.58E+01 Fe-59 <8.37E+01 0.00E+00 8.37E+01 Co-60 <3.49E+01 0.00E+00 3.49E+01 Zn-65 <7.84E+01 0.00E+00 7.84E+01 Nb-95 <6.95E+01 0.00E+00 6.95E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 64 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: FISH Concentration (Activity): pCi/kg wet 706 Sample Point 706 [ INDICATOR - -- @ 0 miles ]

Sample ID: 464785 Sample Dates: 9/19/2017 - 11/7/2017 FREESWIM Nuclide Activity 2 Sigma Error MDA I-131 <1.37E+03 0.00E+00 1.37E+03 Cs-134 <4.92E+01 0.00E+00 4.92E+01 Cs-137 <3.45E+01 0.00E+00 3.45E+01 Be-7 <4.17E+02 0.00E+00 4.17E+02 K-40 2.32E+03 6.62E+02 4.88E+02 Ag-110M <3.69E+01 0.00E+00 3.69E+01 Sb-122 <3.61E+06 0.00E+00 3.61E+06 Sb-125 <7.26E+01 0.00E+00 7.26E+01 Sample Point 707 [ INDICATOR - -- @ 0 miles ]

Sample ID: 464786 Sample Dates: 9/19/2017 - 10/17/2017 BOTMFEEDER Nuclide Activity 2 Sigma Error MDA Mn-54 <3.34E+01 0.00E+00 3.34E+01 Co-58 <4.49E+01 0.00E+00 4.49E+01 Fe-59 <1.41E+02 0.00E+00 1.41E+02 Co-60 <2.72E+01 0.00E+00 2.72E+01 Zn-65 <8.83E+01 0.00E+00 8.83E+01 Nb-95 <9.11E+01 0.00E+00 9.11E+01 I-131 <2.63E+03 0.00E+00 2.63E+03 Cs-134 <2.70E+01 0.00E+00 2.70E+01 Cs-137 <3.14E+01 0.00E+00 3.14E+01 Be-7 <4.97E+02 0.00E+00 4.97E+02 K-40 2.44E+03 6.29E+02 9.88E+01 Ag-110M <3.48E+01 0.00E+00 3.48E+01 Sb-122 <5.51E+07 0.00E+00 5.51E+07 Sb-125 <6.70E+01 0.00E+00 6.70E+01 Sample Point 708 [ INDICATOR - -- @ 0 miles ]

Sample ID: 464787 Sample Dates: 9/19/2017 - 10/17/2017 INVERTEBRA Nuclide Activity 2 Sigma Error MDA Mn-54 <3.39E+01 0.00E+00 3.39E+01 Co-58 <5.08E+01 0.00E+00 5.08E+01 Fe-59 <1.87E+02 0.00E+00 1.87E+02 Co-60 <3.46E+01 0.00E+00 3.46E+01 Zn-65 <8.92E+01 0.00E+00 8.92E+01 Nb-95 <9.93E+01 0.00E+00 9.93E+01 I-131 <3.65E+03 0.00E+00 3.65E+03 Cs-134 <3.54E+01 0.00E+00 3.54E+01 Cs-137 <3.85E+01 0.00E+00 3.85E+01 Be-7 <3.39E+02 0.00E+00 3.39E+02 K-40 2.40E+03 6.90E+02 5.73E+02 Ag-110M <3.28E+01 0.00E+00 3.28E+01 Sb-122 <4.27E+07 0.00E+00 4.27E+07 Sb-125 <1.06E+02 0.00E+00 1.06E+02 Media Type: GROUND WATER Concentration (Activity): pCi/l 404 Sample Point 404 [ INDICATOR - SW @ 0.16 miles ]

Sample ID: 438890 Sample Dates: 3/9/2017 - 3/9/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-9.7E+01 0.00E+00 2.52E+02 Sample ID: 448195 Sample Dates: 6/28/2017 - 6/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.16E+00 0.00E+00 7.16E+00 Co-58 <7.40E+00 0.00E+00 7.40E+00 Fe-59 <1.32E+01 0.00E+00 1.32E+01 Co-60 <4.21E+00 0.00E+00 4.21E+00 Zn-65 <1.55E+01 0.00E+00 1.55E+01 Zr-95 <1.27E+01 0.00E+00 1.27E+01 Nb-95 <1.04E+01 0.00E+00 1.04E+01 I-131 <1.26E+01 0.00E+00 1.26E+01 Cs-134 <7.39E+00 0.00E+00 7.39E+00 Cs-137 <7.14E+00 0.00E+00 7.15E+00 La-140 <1.79E+02 0.00E+00 1.79E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 65 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: GROUND WATER Concentration (Activity): pCi/l 404 Sample Point 404 [ INDICATOR - SW @ 0.16 miles ]

Sample ID: 448195 Sample Dates: 6/28/2017 - 6/28/2017 Nuclide Activity 2 Sigma Error MDA Ba-140 <3.94E+01 0.00E+00 3.94E+01 Total-Gam 0.00E+00 H3GW <-1.2E+02 0.00E+00 2.28E+02 Sample ID: 450505 Sample Dates: 9/14/2017 - 9/14/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-5.6E+01 0.00E+00 1.95E+02 Sample ID: 463817 Sample Dates: 12/13/2017 - 12/13/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.04E+00 0.00E+00 5.04E+00 Co-58 <6.58E+00 0.00E+00 6.58E+00 Fe-59 <1.31E+01 0.00E+00 1.31E+01 Co-60 <5.37E+00 0.00E+00 5.37E+00 Zn-65 <1.04E+01 0.00E+00 1.04E+01 Zr-95 <9.95E+00 0.00E+00 9.95E+00 Nb-95 <6.67E+00 0.00E+00 6.67E+00 I-131 <7.75E+00 0.00E+00 7.75E+00 Cs-134 <5.34E+00 0.00E+00 5.34E+00 Cs-137 <6.01E+00 0.00E+00 6.01E+00 BaLa-140 <8.89E+00 0.00E+00 8.89E+00 Total-Gam 0.00E+00 H3GW <-1.9E+02 0.00E+00 1.95E+02 Sample Point 407 [ INDICATOR - ENE @ 0.06 miles ]

Sample ID: 439721 Sample Dates: 3/22/2017 - 3/22/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-1.5E+02 0.00E+00 2.48E+02 Sample ID: 448197 Sample Dates: 6/28/2017 - 6/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.77E+00 0.00E+00 8.77E+00 Co-58 <6.77E+00 0.00E+00 6.77E+00 Fe-59 <1.81E+01 0.00E+00 1.81E+01 Co-60 <8.42E+00 0.00E+00 8.42E+00 Zn-65 <1.27E+01 0.00E+00 1.27E+01 Zr-95 <1.27E+01 0.00E+00 1.27E+01 Nb-95 <9.01E+00 0.00E+00 9.01E+00 I-131 <1.23E+01 0.00E+00 1.23E+01 Cs-134 <7.57E+00 0.00E+00 7.57E+00 Cs-137 <7.93E+00 0.00E+00 7.93E+00 La-140 <1.33E+02 0.00E+00 1.33E+02 Ba-140 <3.34E+01 0.00E+00 3.34E+01 Total-Gam 0.00E+00 H3GW 3.95E+02 1.42E+02 2.30E+02 Sample ID: 450506 Sample Dates: 9/21/2017 - 9/21/2017 Nuclide Activity 2 Sigma Error MDA H3GW 3.06E+02 1.23E+02 1.96E+02 Sample ID: 463818 Sample Dates: 12/14/2017 - 12/14/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.71E+00 0.00E+00 5.71E+00 Co-58 <5.53E+00 0.00E+00 5.53E+00 Fe-59 <8.94E+00 0.00E+00 8.94E+00 Co-60 <6.39E+00 0.00E+00 6.39E+00 Zn-65 <1.01E+01 0.00E+00 1.01E+01 Zr-95 <9.66E+00 0.00E+00 9.66E+00 Nb-95 <6.57E+00 0.00E+00 6.57E+00 I-131 <8.46E+00 0.00E+00 8.46E+00 Cs-134 <6.76E+00 0.00E+00 6.76E+00 Cs-137 <3.61E+00 0.00E+00 3.61E+00 BaLa-140 <9.80E+00 0.00E+00 9.80E+00 Total-Gam 0.00E+00 H3GW 4.28E+02 1.21E+02 1.84E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 66 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: GROUND WATER Concentration (Activity): pCi/l 409 Sample Point 409 [ INDICATOR - NE @ 0.65 miles ]

Sample ID: 438880 Sample Dates: 3/6/2017 - 3/6/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-9.9E+01 0.00E+00 2.44E+02 Sample ID: 446553 Sample Dates: 6/5/2017 - 6/5/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.92E+00 0.00E+00 7.92E+00 Co-58 <4.56E+00 0.00E+00 4.56E+00 Fe-59 <1.47E+01 0.00E+00 1.47E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <1.44E+01 0.00E+00 1.44E+01 Zr-95 <1.04E+01 0.00E+00 1.04E+01 Nb-95 <8.63E+00 0.00E+00 8.63E+00 I-131 <7.36E+00 0.00E+00 7.36E+00 Cs-134 <6.42E+00 0.00E+00 6.43E+00 Cs-137 <9.50E+00 0.00E+00 9.50E+00 La-140 <2.23E+01 0.00E+00 2.23E+01 Ba-140 <2.85E+01 0.00E+00 2.85E+01 Total-Gam 0.00E+00 H3GW <-1.1E+02 0.00E+00 2.54E+02 Sample ID: 450507 Sample Dates: 9/18/2017 - 9/18/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-6.1E+01 0.00E+00 1.97E+02 Sample ID: 463819 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.91E+00 0.00E+00 5.91E+00 Co-58 <6.67E+00 0.00E+00 6.67E+00 Fe-59 <1.28E+01 0.00E+00 1.28E+01 Co-60 <6.89E+00 0.00E+00 6.89E+00 Zn-65 <1.33E+01 0.00E+00 1.33E+01 Zr-95 <1.00E+01 0.00E+00 1.00E+01 Nb-95 <6.47E+00 0.00E+00 6.47E+00 I-131 <9.68E+00 0.00E+00 9.68E+00 Cs-134 <6.18E+00 0.00E+00 6.18E+00 Cs-137 <5.90E+00 0.00E+00 5.90E+00 BaLa-140 <9.48E+00 0.00E+00 9.48E+00 Total-Gam 0.00E+00 H3GW <-1.1E+02 0.00E+00 1.95E+02 Sample Point 410 [ INDICATOR - NE @ 0.65 miles ]

Sample ID: 438881 Sample Dates: 3/6/2017 - 3/6/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-1.3E+02 0.00E+00 2.44E+02 Sample ID: 446554 Sample Dates: 6/5/2017 - 6/5/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.08E+01 0.00E+00 1.08E+01 Co-58 <7.64E+00 0.00E+00 7.64E+00 Fe-59 <1.68E+01 0.00E+00 1.68E+01 Co-60 <7.28E+00 0.00E+00 7.28E+00 Zn-65 <1.35E+01 0.00E+00 1.35E+01 Zr-95 <1.30E+01 0.00E+00 1.30E+01 Nb-95 <1.05E+01 0.00E+00 1.05E+01 I-131 <1.04E+01 0.00E+00 1.04E+01 Cs-134 <8.19E+00 0.00E+00 8.19E+00 Cs-137 <9.50E+00 0.00E+00 9.50E+00 La-140 <2.44E+01 0.00E+00 2.44E+01 Ba-140 <3.19E+01 0.00E+00 3.19E+01 Total-Gam 0.00E+00 H3GW <-1.1E+02 0.00E+00 2.55E+02 Sample ID: 450508 Sample Dates: 9/18/2017 - 9/18/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-8.5E+01 0.00E+00 1.99E+02 Sample ID: 463820 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <4.57E+00 0.00E+00 4.57E+00 Co-58 <4.74E+00 0.00E+00 4.74E+00 Fe-59 <9.89E+00 0.00E+00 9.89E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 67 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: GROUND WATER Concentration (Activity): pCi/l 410 Sample Point 410 [ INDICATOR - NE @ 0.65 miles ]

Sample ID: 463820 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Co-60 <5.23E+00 0.00E+00 5.23E+00 Zn-65 <9.29E+00 0.00E+00 9.29E+00 Zr-95 <7.65E+00 0.00E+00 7.65E+00 Nb-95 <5.63E+00 0.00E+00 5.63E+00 I-131 <7.72E+00 0.00E+00 7.72E+00 Cs-134 <5.57E+00 0.00E+00 5.57E+00 Cs-137 <5.20E+00 0.00E+00 5.20E+00 BaLa-140 <1.09E+01 0.00E+00 1.09E+01 Total-Gam 0.00E+00 H3GW <-1.7E+02 0.00E+00 1.95E+02 Sample Point 418 [ INDICATOR - -- @ 0 miles ]

Sample ID: 438883 Sample Dates: 3/6/2017 - 3/6/2017 Nuclide Activity 2 Sigma Error MDA H3GW <1.04E+01 0.00E+00 2.44E+02 Sample ID: 447440 Sample Dates: 6/20/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.41E+00 0.00E+00 8.41E+00 Co-58 <7.83E+00 0.00E+00 7.83E+00 Fe-59 <1.30E+01 0.00E+00 1.30E+01 Co-60 <8.40E+00 0.00E+00 8.40E+00 Zn-65 <2.04E+01 0.00E+00 2.04E+01 Zr-95 <1.63E+01 0.00E+00 1.63E+01 Nb-95 <8.24E+00 0.00E+00 8.24E+00 I-131 <7.99E+00 0.00E+00 7.99E+00 Cs-134 <7.53E+00 0.00E+00 7.53E+00 Cs-137 <8.86E+00 0.00E+00 8.86E+00 La-140 <1.14E+01 0.00E+00 1.14E+01 Ba-140 <2.49E+01 0.00E+00 2.49E+01 Total-Gam 0.00E+00 H3GW <5.12E+01 0.00E+00 2.39E+02 Sample ID: 450515 Sample Dates: 9/11/2017 - 9/11/2017 Nuclide Activity 2 Sigma Error MDA H3GW <1.07E+02 0.00E+00 2.03E+02 Sample ID: 463828 Sample Dates: 12/18/2017 - 12/18/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.05E+00 0.00E+00 6.05E+00 Co-58 <4.79E+00 0.00E+00 4.79E+00 Fe-59 <9.64E+00 0.00E+00 9.64E+00 Co-60 <6.05E+00 0.00E+00 6.05E+00 Zn-65 <1.37E+01 0.00E+00 1.37E+01 Zr-95 <1.18E+01 0.00E+00 1.18E+01 Nb-95 <6.13E+00 0.00E+00 6.13E+00 I-131 <7.53E+00 0.00E+00 7.53E+00 Cs-134 <7.01E+00 0.00E+00 7.01E+00 Cs-137 <6.91E+00 0.00E+00 6.91E+00 BaLa-140 <4.38E+00 0.00E+00 4.38E+00 Total-Gam 0.00E+00 H3GW <1.55E+02 0.00E+00 1.84E+02 Sample Point 423 [ INDICATOR - -- @ 0 miles ]

Sample ID: 438895 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-8.2E+01 0.00E+00 2.56E+02 Sample ID: 447939 Sample Dates: 6/26/2017 - 6/26/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.45E+00 0.00E+00 6.45E+00 Co-58 <8.81E+00 0.00E+00 8.81E+00 Fe-59 <1.71E+01 0.00E+00 1.71E+01 Co-60 <7.10E+00 0.00E+00 7.10E+00 Zn-65 <2.04E+01 0.00E+00 2.04E+01 Zr-95 <1.42E+01 0.00E+00 1.42E+01 Nb-95 <7.00E+00 0.00E+00 7.00E+00 I-131 <8.92E+00 0.00E+00 8.93E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 68 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: GROUND WATER Concentration (Activity): pCi/l 423 Sample Point 423 [ INDICATOR - -- @ 0 miles ]

Sample ID: 447939 Sample Dates: 6/26/2017 - 6/26/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <6.42E+00 0.00E+00 6.42E+00 Cs-137 <7.67E+00 0.00E+00 7.67E+00 La-140 <1.27E+01 0.00E+00 1.27E+01 Ba-140 <3.14E+01 0.00E+00 3.14E+01 Total-Gam 0.00E+00 H3GW <6.61E+01 0.00E+00 2.40E+02 Sample ID: 450517 Sample Dates: 9/14/2017 - 9/14/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-3.3E+01 0.00E+00 1.95E+02 Sample ID: 463833 Sample Dates: 12/19/2017 - 12/19/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.35E+00 0.00E+00 6.35E+00 Co-58 <4.98E+00 0.00E+00 4.98E+00 Fe-59 <1.09E+01 0.00E+00 1.09E+01 Co-60 <7.70E+00 0.00E+00 7.70E+00 Zn-65 <1.12E+01 0.00E+00 1.12E+01 Zr-95 <9.68E+00 0.00E+00 9.68E+00 Nb-95 <6.73E+00 0.00E+00 6.73E+00 I-131 <9.38E+00 0.00E+00 9.38E+00 Cs-134 <6.39E+00 0.00E+00 6.39E+00 Cs-137 <4.84E+00 0.00E+00 4.84E+00 BaLa-140 <1.19E+01 0.00E+00 1.19E+01 Total-Gam 0.00E+00 H3GW <-1.4E+02 0.00E+00 1.92E+02 Sample Point 424 [ INDICATOR - -- @ 0 miles ]

Sample ID: 438896 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-1.7E+02 0.00E+00 2.57E+02 Sample ID: 447940 Sample Dates: 6/26/2017 - 6/26/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.07E+00 0.00E+00 7.07E+00 Co-58 <9.70E+00 0.00E+00 9.70E+00 Fe-59 <1.45E+01 0.00E+00 1.45E+01 Co-60 <8.40E+00 0.00E+00 8.40E+00 Zn-65 <1.97E+01 0.00E+00 1.97E+01 Zr-95 <1.19E+01 0.00E+00 1.19E+01 Nb-95 <9.73E+00 0.00E+00 9.73E+00 I-131 <8.55E+00 0.00E+00 8.55E+00 Cs-134 <7.53E+00 0.00E+00 7.53E+00 Cs-137 <7.41E+00 0.00E+00 7.41E+00 La-140 <1.32E+01 0.00E+00 1.32E+01 Ba-140 <3.27E+01 0.00E+00 3.27E+01 Total-Gam 0.00E+00 H3GW <3.42E+01 0.00E+00 2.41E+02 Sample ID: 450518 Sample Dates: 9/14/2017 - 9/14/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-1.4E+02 0.00E+00 1.96E+02 Sample ID: 463834 Sample Dates: 1/10/2018 - 1/10/2018 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.56E+00 0.00E+00 6.56E+00 Co-58 <5.38E+00 0.00E+00 5.38E+00 Fe-59 <1.28E+01 0.00E+00 1.28E+01 Co-60 <3.29E+00 0.00E+00 3.29E+00 Zn-65 <1.12E+01 0.00E+00 1.12E+01 Zr-95 <7.39E+00 0.00E+00 7.39E+00 Nb-95 <5.87E+00 0.00E+00 5.87E+00 I-131 <7.14E+00 0.00E+00 7.14E+00 Cs-134 <4.65E+00 0.00E+00 4.65E+00 Cs-137 <6.40E+00 0.00E+00 6.40E+00 BaLa-140 <6.43E+00 0.00E+00 6.43E+00 Total-Gam 0.00E+00 H3GW <-5.6E+01 0.00E+00 1.84E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 69 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: GROUND WATER Concentration (Activity): pCi/l 426 Sample Point 426 [ INDICATOR - -- @ 0 miles ]

Sample ID: 439270 Sample Dates: 3/16/2017 - 3/16/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-3.3E+01 0.00E+00 2.51E+02 Sample ID: 448198 Sample Dates: 6/29/2017 - 6/29/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.54E+00 0.00E+00 6.54E+00 Co-58 <9.80E+00 0.00E+00 9.80E+00 Fe-59 <1.94E+01 0.00E+00 1.94E+01 Co-60 <7.88E+00 0.00E+00 7.87E+00 Zn-65 <1.79E+01 0.00E+00 1.79E+01 Zr-95 <1.46E+01 0.00E+00 1.46E+01 Nb-95 <9.24E+00 0.00E+00 9.24E+00 I-131 <1.19E+01 0.00E+00 1.19E+01 Cs-134 <6.65E+00 0.00E+00 6.65E+00 Cs-137 <9.50E+00 0.00E+00 9.50E+00 La-140 <1.24E+02 0.00E+00 1.24E+02 Ba-140 <3.60E+01 0.00E+00 3.60E+01 Total-Gam 0.00E+00 H3GW <-1.5E+01 0.00E+00 2.30E+02 Sample ID: 450520 Sample Dates: 9/14/2017 - 9/14/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-4.5E+01 0.00E+00 2.00E+02 Sample ID: 463836 Sample Dates: 12/13/2017 - 12/13/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.67E+00 0.00E+00 5.67E+00 Co-58 <6.01E+00 0.00E+00 6.01E+00 Fe-59 <1.12E+01 0.00E+00 1.12E+01 Co-60 <4.32E+00 0.00E+00 4.32E+00 Zn-65 <1.18E+01 0.00E+00 1.18E+01 Zr-95 <1.16E+01 0.00E+00 1.16E+01 Nb-95 <6.75E+00 0.00E+00 6.75E+00 I-131 <9.82E+00 0.00E+00 9.82E+00 Cs-134 <6.15E+00 0.00E+00 6.15E+00 Cs-137 <5.50E+00 0.00E+00 5.50E+00 BaLa-140 <1.20E+01 0.00E+00 1.20E+01 Total-Gam 0.00E+00 H3GW <-1.3E+02 0.00E+00 1.95E+02 Sample Point 429 [ INDICATOR - -- @ 0 miles ]

Sample ID: 438884 Sample Dates: 3/6/2017 - 3/6/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-5.7E+01 0.00E+00 2.44E+02 Sample ID: 447442 Sample Dates: 6/20/2017 - 6/20/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.02E+01 0.00E+00 1.02E+01 Co-58 <9.99E+00 0.00E+00 9.99E+00 Fe-59 <1.92E+01 0.00E+00 1.92E+01 Co-60 <7.86E+00 0.00E+00 7.86E+00 Zn-65 <1.61E+01 0.00E+00 1.61E+01 Zr-95 <1.87E+01 0.00E+00 1.87E+01 Nb-95 <1.31E+01 0.00E+00 1.31E+01 I-131 <1.19E+01 0.00E+00 1.19E+01 Cs-134 <9.09E+00 0.00E+00 9.09E+00 Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <2.01E+01 0.00E+00 2.01E+01 Ba-140 <3.64E+01 0.00E+00 3.64E+01 Total-Gam 0.00E+00 H3GW <-1.8E+02 0.00E+00 2.39E+02 Sample ID: 450521 Sample Dates: 9/11/2017 - 9/11/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-1.6E+02 0.00E+00 2.03E+02 Sample ID: 463837 Sample Dates: 12/15/2017 - 12/15/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.47E+00 0.00E+00 7.47E+00 Co-58 <7.07E+00 0.00E+00 7.07E+00 Fe-59 <1.55E+01 0.00E+00 1.55E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 70 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: GROUND WATER Concentration (Activity): pCi/l 429 Sample Point 429 [ INDICATOR - -- @ 0 miles ]

Sample ID: 463837 Sample Dates: 12/15/2017 - 12/15/2017 Nuclide Activity 2 Sigma Error MDA Co-60 <7.50E+00 0.00E+00 7.50E+00 Zn-65 <1.52E+01 0.00E+00 1.52E+01 Zr-95 <9.52E+00 0.00E+00 9.52E+00 Nb-95 <6.98E+00 0.00E+00 6.98E+00 I-131 <1.03E+01 0.00E+00 1.03E+01 Cs-134 <8.96E+00 0.00E+00 8.96E+00 Cs-137 <5.36E+00 0.00E+00 5.36E+00 BaLa-140 <1.12E+01 0.00E+00 1.12E+01 Total-Gam 0.00E+00 H3GW <0.00E+00 0.00E+00 1.84E+02 Sample Point 612 [ INDICATOR - -- @ 0 miles ]

Sample ID: 439605 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3GW <-1.5E+02 0.00E+00 2.55E+02 Sample ID: 448199 Sample Dates: 6/28/2017 - 6/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.54E+00 0.00E+00 8.54E+00 Co-58 <6.48E+00 0.00E+00 6.48E+00 Fe-59 <1.61E+01 0.00E+00 1.61E+01 Co-60 <7.61E+00 0.00E+00 7.61E+00 Zn-65 <1.64E+01 0.00E+00 1.64E+01 Zr-95 <1.81E+01 0.00E+00 1.81E+01 Nb-95 <9.95E+00 0.00E+00 9.95E+00 I-131 <1.61E+01 0.00E+00 1.61E+01 Cs-134 <8.39E+00 0.00E+00 8.39E+00 Cs-137 <8.86E+00 0.00E+00 8.86E+00 La-140 <2.36E+02 0.00E+00 2.36E+02 Ba-140 <3.39E+01 0.00E+00 3.39E+01 Total-Gam 0.00E+00 H3GW <1.89E+02 0.00E+00 2.31E+02 Sample ID: 450522 Sample Dates: 9/20/2017 - 9/20/2017 Nuclide Activity 2 Sigma Error MDA H3GW <5.38E+01 0.00E+00 1.96E+02 Sample ID: 463839 Sample Dates: 12/14/2017 - 12/14/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.77E+00 0.00E+00 5.77E+00 Co-58 <6.41E+00 0.00E+00 6.41E+00 Fe-59 <1.20E+01 0.00E+00 1.20E+01 Co-60 <4.15E+00 0.00E+00 4.15E+00 Zn-65 <1.26E+01 0.00E+00 1.26E+01 Zr-95 <1.04E+01 0.00E+00 1.04E+01 Nb-95 <6.32E+00 0.00E+00 6.32E+00 I-131 <8.95E+00 0.00E+00 8.95E+00 Cs-134 <6.69E+00 0.00E+00 6.69E+00 Cs-137 <5.60E+00 0.00E+00 5.60E+00 BaLa-140 <8.23E+00 0.00E+00 8.23E+00 Total-Gam 0.00E+00 H3GW <8.93E+01 0.00E+00 1.84E+02 Media Type: SEDIMENT_SHORE Concentration (Activity): pCi/kg dry 500 Sample Point 500 [ INDICATOR - SSW @ 5 miles ]

Sample ID: 445247 Sample Dates: 5/19/2017 - 5/19/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.30E+01 0.00E+00 1.30E+01 Co-58 <1.32E+01 0.00E+00 1.32E+01 Fe-59 <2.43E+01 0.00E+00 2.43E+01 Co-60 <1.34E+01 0.00E+00 1.34E+01 Zn-65 <2.60E+01 0.00E+00 2.60E+01 Zr-95 <2.65E+01 0.00E+00 2.65E+01 Nb-95 <1.34E+01 0.00E+00 1.34E+01 I-131 <2.50E+01 0.00E+00 2.50E+01 Cs-134 <1.62E+01 0.00E+00 1.62E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 71 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SEDIMENT_SHORE Concentration (Activity): pCi/kg dry 500 Sample Point 500 [ INDICATOR - SSW @ 5 miles ]

Sample ID: 445247 Sample Dates: 5/19/2017 - 5/19/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.23E+01 0.00E+00 1.23E+01 Be-7 <1.49E+02 0.00E+00 1.49E+02 K-40 1.29E+03 2.68E+02 1.29E+02 Co-57 <8.38E+00 0.00E+00 8.38E+00 Mo-99 <1.71E+03 0.00E+00 1.71E+03 Ag-110M <1.12E+01 0.00E+00 1.12E+01 Sb-122 <3.08E+02 0.00E+00 3.08E+02 Sb-125 <2.67E+01 0.00E+00 2.67E+01 Sample ID: 463859 Sample Dates: 11/14/2017 - 11/14/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.71E+01 0.00E+00 1.71E+01 Co-58 <1.16E+01 0.00E+00 1.16E+01 Fe-59 <2.96E+01 0.00E+00 2.96E+01 Co-60 <1.46E+01 0.00E+00 1.46E+01 Zn-65 <2.57E+01 0.00E+00 2.57E+01 Zr-95 <2.80E+01 0.00E+00 2.80E+01 Nb-95 <1.47E+01 0.00E+00 1.47E+01 I-131 <2.19E+01 0.00E+00 2.19E+01 Cs-134 <1.91E+01 0.00E+00 1.91E+01 Cs-137 <1.44E+01 0.00E+00 1.44E+01 Be-7 <1.31E+02 0.00E+00 1.31E+02 K-40 1.46E+03 3.10E+02 1.28E+02 Co-57 <1.01E+01 0.00E+00 1.01E+01 Mo-99 <5.15E+02 0.00E+00 5.15E+02 Ag-110M <1.69E+01 0.00E+00 1.69E+01 Sb-122 <5.74E+01 0.00E+00 5.74E+01 Sb-125 <3.62E+01 0.00E+00 3.62E+01 Sample Point 501 [ INDICATOR - -- @ 0 miles ]

Sample ID: 446422 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.10E+01 0.00E+00 7.10E+01 Co-58 <7.67E+01 0.00E+00 7.67E+01 Fe-59 <1.71E+02 0.00E+00 1.71E+02 Co-60 <5.43E+01 0.00E+00 5.43E+01 Zn-65 <1.12E+02 0.00E+00 1.12E+02 Zr-95 <1.22E+02 0.00E+00 1.22E+02 Nb-95 <9.85E+01 0.00E+00 9.85E+01 I-131 <1.62E+02 0.00E+00 1.62E+02 Cs-134 <7.15E+01 0.00E+00 7.15E+01 Cs-137 <1.41E+02 0.00E+00 1.41E+02 Be-7 2.81E+02 4.22E+02 7.05E+02 K-40 9.74E+03 1.81E+03 1.12E+03 Co-57 <5.22E+01 0.00E+00 5.22E+01 Mo-99 <1.31E+04 0.00E+00 1.31E+04 Ag-110M <5.59E+01 0.00E+00 5.59E+01 Sb-122 <1.81E+03 0.00E+00 1.81E+03 Sb-125 <1.82E+02 0.00E+00 1.82E+02 Sample ID: 464825 Sample Dates: 11/21/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.72E+01 0.00E+00 6.72E+01 Co-58 <6.98E+01 0.00E+00 6.98E+01 Fe-59 <1.62E+02 0.00E+00 1.62E+02 Co-60 <4.72E+01 0.00E+00 4.72E+01 Zn-65 <1.24E+02 0.00E+00 1.24E+02 Zr-95 <1.58E+02 0.00E+00 1.58E+02 Nb-95 <9.19E+01 0.00E+00 9.19E+01 I-131 <2.05E+02 0.00E+00 2.05E+02 Cs-134 <8.94E+01 0.00E+00 8.94E+01 Cs-137 1.13E+02 8.04E+01 1.21E+02 Be-7 2.03E+02 5.40E+02 9.36E+02 K-40 1.30E+04 2.19E+03 1.10E+03 Co-57 <4.70E+01 0.00E+00 4.70E+01 Mo-99 <2.42E+04 0.00E+00 2.42E+04 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 72 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SEDIMENT_SHORE Concentration (Activity): pCi/kg dry 501 Sample Point 501 [ INDICATOR - -- @ 0 miles ]

Sample ID: 464825 Sample Dates: 11/21/2017 - 11/21/2017 Nuclide Activity 2 Sigma Error MDA Ag-110M <5.48E+01 0.00E+00 5.48E+01 Sb-122 <3.74E+03 0.00E+00 3.74E+03 Sb-125 <1.05E+02 0.00E+00 1.05E+02 Fe-55 <1.15E+05 0.00E+00 1.15E+05 Ni-63 <4.83E+04 0.00E+00 4.83E+04 Sr-89 <2.20E+02 0.00E+00 2.20E+02 Sr-90 <1.39E+02 0.00E+00 1.39E+02 Media Type: SURFACE WATER Concentration (Activity): pCi/l 400 Sample Point 400 [ CONTROL - NE @ 0.6 miles ]

Sample ID: 432881 Sample Dates: 1/3/2017 - 2/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.97E-01 0.00E+00 7.97E-01 Co-58 <9.74E-01 0.00E+00 9.74E-01 Fe-59 <2.15E+00 0.00E+00 2.15E+00 Co-60 <7.91E-01 0.00E+00 7.91E-01 Zn-65 <1.68E+00 0.00E+00 1.68E+00 Zr-95 <1.69E+00 0.00E+00 1.69E+00 Nb-95 <1.28E+00 0.00E+00 1.28E+00 I-131 <4.27E+00 0.00E+00 4.27E+00 Cs-134 <9.50E-01 0.00E+00 9.50E-01 Cs-137 <8.90E-01 0.00E+00 8.90E-01 BaLa-140 <2.11E+00 0.00E+00 2.11E+00 H3SW <7.09E+01 0.00E+00 1.87E+02 Sample ID: 435077 Sample Dates: 2/1/2017 - 3/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.89E+00 0.00E+00 1.89E+00 Co-58 <2.35E+00 0.00E+00 2.35E+00 Fe-59 <5.74E+00 0.00E+00 5.74E+00 Co-60 <1.89E+00 0.00E+00 1.89E+00 Zn-65 <5.96E+00 0.00E+00 5.96E+00 Zr-95 <4.44E+00 0.00E+00 4.44E+00 Nb-95 <3.30E+00 0.00E+00 3.30E+00 I-131 <1.14E+01 0.00E+00 1.14E+01 Cs-134 <2.08E+00 0.00E+00 2.08E+00 Cs-137 <2.54E+00 0.00E+00 2.54E+00 BaLa-140 <5.28E+00 0.00E+00 5.28E+00 H3SW <3.88E+01 0.00E+00 1.88E+02 Sample ID: 437549 Sample Dates: 3/1/2017 - 4/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.09E+00 0.00E+00 2.09E+00 Co-58 <2.58E+00 0.00E+00 2.58E+00 Fe-59 <5.56E+00 0.00E+00 5.56E+00 Co-60 <2.40E+00 0.00E+00 2.40E+00 Zn-65 <4.59E+00 0.00E+00 4.59E+00 Zr-95 <4.16E+00 0.00E+00 4.16E+00 Nb-95 <3.36E+00 0.00E+00 3.36E+00 I-131 <1.07E+01 0.00E+00 1.07E+01 Cs-134 <2.49E+00 0.00E+00 2.49E+00 Cs-137 <1.87E+00 0.00E+00 1.87E+00 BaLa-140 <6.57E+00 0.00E+00 6.57E+00 H3SW <-2.6E+01 0.00E+00 1.93E+02 Sample ID: 439978 Sample Dates: 4/1/2017 - 5/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.43E+00 0.00E+00 2.43E+00 Co-58 <3.35E+00 0.00E+00 3.35E+00 Fe-59 <6.99E+00 0.00E+00 6.99E+00 Co-60 <2.41E+00 0.00E+00 2.41E+00 Zn-65 <5.39E+00 0.00E+00 5.39E+00 Zr-95 <5.31E+00 0.00E+00 5.31E+00 Nb-95 <3.34E+00 0.00E+00 3.34E+00 I-131 <1.13E+01 0.00E+00 1.13E+01 Cs-134 <3.21E+00 0.00E+00 3.21E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 73 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 400 Sample Point 400 [ CONTROL - NE @ 0.6 miles ]

Sample ID: 439978 Sample Dates: 4/1/2017 - 5/1/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <2.49E+00 0.00E+00 2.49E+00 BaLa-140 <8.31E+00 0.00E+00 8.31E+00 H3SW <-6.3E+01 0.00E+00 1.92E+02 Sample ID: 444234 Sample Dates: 5/1/2017 - 6/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.79E+00 0.00E+00 1.79E+00 Co-58 <2.23E+00 0.00E+00 2.23E+00 Fe-59 <4.87E+00 0.00E+00 4.87E+00 Co-60 <1.83E+00 0.00E+00 1.83E+00 Zn-65 <3.85E+00 0.00E+00 3.85E+00 Zr-95 <3.81E+00 0.00E+00 3.81E+00 Nb-95 <2.65E+00 0.00E+00 2.65E+00 I-131 <1.17E+01 0.00E+00 1.17E+01 Cs-134 <3.01E+00 0.00E+00 3.01E+00 Cs-137 <1.96E+00 0.00E+00 1.96E+00 BaLa-140 <6.23E+00 0.00E+00 6.23E+00 H3SW <-8.8E+01 0.00E+00 2.02E+02 Sample ID: 447140 Sample Dates: 6/1/2017 - 7/2/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+00 0.00E+00 1.50E+00 Co-58 <1.81E+00 0.00E+00 1.81E+00 Fe-59 <3.91E+00 0.00E+00 3.91E+00 Co-60 <1.66E+00 0.00E+00 1.66E+00 Zn-65 <3.04E+00 0.00E+00 3.04E+00 Zr-95 <3.43E+00 0.00E+00 3.43E+00 Nb-95 <2.46E+00 0.00E+00 2.46E+00 I-131 <1.20E+01 0.00E+00 1.20E+01 Cs-134 <1.74E+00 0.00E+00 1.74E+00 Cs-137 <1.58E+00 0.00E+00 1.58E+00 BaLa-140 <5.59E+00 0.00E+00 5.59E+00 H3SW <-3.5E+01 0.00E+00 1.98E+02 Sample ID: 449192 Sample Dates: 7/2/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.56E+00 0.00E+00 2.56E+00 Co-58 <3.53E+00 0.00E+00 3.53E+00 Fe-59 <7.06E+00 0.00E+00 7.06E+00 Co-60 <2.66E+00 0.00E+00 2.66E+00 Zn-65 <6.17E+00 0.00E+00 6.17E+00 Zr-95 <4.81E+00 0.00E+00 4.81E+00 Nb-95 <3.76E+00 0.00E+00 3.76E+00 I-131 <1.17E+01 0.00E+00 1.17E+01 Cs-134 <3.24E+00 0.00E+00 3.24E+00 Cs-137 <2.76E+00 0.00E+00 2.76E+00 BaLa-140 <4.27E+00 0.00E+00 4.27E+00 H3SW <-6.1E+01 0.00E+00 1.84E+02 Sample ID: 451160 Sample Dates: 8/1/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.90E+00 0.00E+00 1.90E+00 Co-58 <2.16E+00 0.00E+00 2.16E+00 Fe-59 <5.57E+00 0.00E+00 5.57E+00 Co-60 <2.15E+00 0.00E+00 2.15E+00 Zn-65 <5.11E+00 0.00E+00 5.11E+00 Zr-95 <4.33E+00 0.00E+00 4.33E+00 Nb-95 <2.42E+00 0.00E+00 2.42E+00 I-131 <1.05E+01 0.00E+00 1.05E+01 Cs-134 <2.42E+00 0.00E+00 2.42E+00 Cs-137 <2.02E+00 0.00E+00 2.02E+00 BaLa-140 <6.46E+00 0.00E+00 6.46E+00 H3SW <-1.2E+02 0.00E+00 2.01E+02 Sample ID: 453415 Sample Dates: 9/5/2017 - 10/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <3.07E+00 0.00E+00 3.07E+00 Co-58 <2.60E+00 0.00E+00 2.60E+00 Fe-59 <7.33E+00 0.00E+00 7.33E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 74 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 400 Sample Point 400 [ CONTROL - NE @ 0.6 miles ]

Sample ID: 453415 Sample Dates: 9/5/2017 - 10/1/2017 Nuclide Activity 2 Sigma Error MDA Co-60 <3.10E+00 0.00E+00 3.10E+00 Zn-65 <4.34E+00 0.00E+00 4.34E+00 Zr-95 <6.03E+00 0.00E+00 6.03E+00 Nb-95 <3.83E+00 0.00E+00 3.83E+00 I-131 <1.04E+01 0.00E+00 1.04E+01 Cs-134 <3.07E+00 0.00E+00 3.07E+00 Cs-137 <2.78E+00 0.00E+00 2.78E+00 BaLa-140 <5.13E+00 0.00E+00 5.13E+00 H3SW <-7.6E+01 0.00E+00 1.99E+02 Sample ID: 456013 Sample Dates: 10/1/2017 - 11/2/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.85E+00 0.00E+00 1.85E+00 Co-58 <2.15E+00 0.00E+00 2.15E+00 Fe-59 <4.80E+00 0.00E+00 4.80E+00 Co-60 <1.91E+00 0.00E+00 1.91E+00 Zn-65 <3.89E+00 0.00E+00 3.89E+00 Zr-95 <3.31E+00 0.00E+00 3.31E+00 Nb-95 <2.74E+00 0.00E+00 2.74E+00 I-131 <1.18E+01 0.00E+00 1.18E+01 Cs-134 <2.05E+00 0.00E+00 2.05E+00 Cs-137 <2.09E+00 0.00E+00 2.09E+00 BaLa-140 <6.00E+00 0.00E+00 6.00E+00 H3SW <3.09E+01 0.00E+00 1.84E+02 Sample ID: 463063 Sample Dates: 11/2/2017 - 12/3/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.72E+00 0.00E+00 2.72E+00 Co-58 <2.74E+00 0.00E+00 2.74E+00 Fe-59 <7.95E+00 0.00E+00 7.95E+00 Co-60 <2.40E+00 0.00E+00 2.40E+00 Zn-65 <6.15E+00 0.00E+00 6.15E+00 Zr-95 <5.51E+00 0.00E+00 5.51E+00 Nb-95 <4.31E+00 0.00E+00 4.31E+00 I-131 <1.14E+01 0.00E+00 1.14E+01 Cs-134 <3.65E+00 0.00E+00 3.65E+00 Cs-137 <2.39E+00 0.00E+00 2.39E+00 BaLa-140 <6.84E+00 0.00E+00 6.84E+00 H3SW <-7.3E+01 0.00E+00 1.93E+02 Sample ID: 464937 Sample Dates: 12/3/2017 - 1/1/2018 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.98E+00 0.00E+00 1.98E+00 Co-58 <3.19E+00 0.00E+00 3.19E+00 Fe-59 <5.75E+00 0.00E+00 5.75E+00 Co-60 <3.02E+00 0.00E+00 3.02E+00 Zn-65 <6.75E+00 0.00E+00 6.75E+00 Zr-95 <6.24E+00 0.00E+00 6.24E+00 Nb-95 <3.77E+00 0.00E+00 3.77E+00 I-131 <1.16E+01 0.00E+00 1.16E+01 Cs-134 <4.09E+00 0.00E+00 4.09E+00 Cs-137 <2.53E+00 0.00E+00 2.53E+00 BaLa-140 <6.54E+00 0.00E+00 6.54E+00 H3SW <-7.1E+00 0.00E+00 1.77E+02 Sample Point 401 [ INDICATOR - SSW @ 4.9 miles ]

Sample ID: 432882 Sample Dates: 1/3/2017 - 2/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.77E+00 0.00E+00 2.77E+00 Co-58 <2.85E+00 0.00E+00 2.85E+00 Fe-59 <5.56E+00 0.00E+00 5.56E+00 Co-60 <3.10E+00 0.00E+00 3.10E+00 Zn-65 <4.79E+00 0.00E+00 4.79E+00 Zr-95 <4.45E+00 0.00E+00 4.45E+00 Nb-95 <2.91E+00 0.00E+00 2.91E+00 I-131 <1.20E+01 0.00E+00 1.20E+01 Cs-134 <2.59E+00 0.00E+00 2.59E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 75 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 401 Sample Point 401 [ INDICATOR - SSW @ 4.9 miles ]

Sample ID: 432882 Sample Dates: 1/3/2017 - 2/1/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <2.16E+00 0.00E+00 2.16E+00 BaLa-140 <6.27E+00 0.00E+00 6.27E+00 H3SW 2.39E+02 1.15E+02 1.84E+02 Sample ID: 435078 Sample Dates: 2/1/2017 - 3/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.22E+00 0.00E+00 2.22E+00 Co-58 <2.49E+00 0.00E+00 2.49E+00 Fe-59 <5.51E+00 0.00E+00 5.51E+00 Co-60 <2.37E+00 0.00E+00 2.37E+00 Zn-65 <4.17E+00 0.00E+00 4.17E+00 Zr-95 <4.78E+00 0.00E+00 4.78E+00 Nb-95 <2.83E+00 0.00E+00 2.83E+00 I-131 <1.17E+01 0.00E+00 1.17E+01 Cs-134 <2.41E+00 0.00E+00 2.41E+00 Cs-137 <2.42E+00 0.00E+00 2.42E+00 BaLa-140 <6.18E+00 0.00E+00 6.18E+00 H3SW <1.88E+02 0.00E+00 1.90E+02 Sample ID: 437550 Sample Dates: 3/1/2017 - 4/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.04E+00 0.00E+00 2.04E+00 Co-58 <2.43E+00 0.00E+00 2.43E+00 Fe-59 <5.68E+00 0.00E+00 5.68E+00 Co-60 <2.41E+00 0.00E+00 2.41E+00 Zn-65 <5.74E+00 0.00E+00 5.74E+00 Zr-95 <4.24E+00 0.00E+00 4.24E+00 Nb-95 <3.42E+00 0.00E+00 3.42E+00 I-131 <1.20E+01 0.00E+00 1.20E+01 Cs-134 <2.56E+00 0.00E+00 2.56E+00 Cs-137 <2.50E+00 0.00E+00 2.50E+00 BaLa-140 <4.59E+00 0.00E+00 4.59E+00 H3SW 4.33E+02 1.23E+02 1.91E+02 Sample ID: 439979 Sample Dates: 4/1/2017 - 5/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <3.02E+00 0.00E+00 3.02E+00 Co-58 <3.40E+00 0.00E+00 3.40E+00 Fe-59 <8.23E+00 0.00E+00 8.23E+00 Co-60 <2.49E+00 0.00E+00 2.49E+00 Zn-65 <7.14E+00 0.00E+00 7.14E+00 Zr-95 <7.20E+00 0.00E+00 7.20E+00 Nb-95 <4.51E+00 0.00E+00 4.51E+00 I-131 <1.16E+01 0.00E+00 1.16E+01 Cs-134 <3.19E+00 0.00E+00 3.19E+00 Cs-137 <3.46E+00 0.00E+00 3.46E+00 BaLa-140 <5.30E+00 0.00E+00 5.30E+00 H3SW <7.51E+01 0.00E+00 1.93E+02 Sample ID: 444235 Sample Dates: 5/1/2017 - 6/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.98E+00 0.00E+00 1.98E+00 Co-58 <2.02E+00 0.00E+00 2.02E+00 Fe-59 <4.45E+00 0.00E+00 4.45E+00 Co-60 <1.72E+00 0.00E+00 1.72E+00 Zn-65 <3.86E+00 0.00E+00 3.86E+00 Zr-95 <4.15E+00 0.00E+00 4.15E+00 Nb-95 <3.07E+00 0.00E+00 3.07E+00 I-131 <1.09E+01 0.00E+00 1.09E+01 Cs-134 <2.04E+00 0.00E+00 2.04E+00 Cs-137 <2.21E+00 0.00E+00 2.21E+00 BaLa-140 <7.35E+00 0.00E+00 7.35E+00 H3SW <-9.8E+00 0.00E+00 2.01E+02 Sample ID: 447141 Sample Dates: 6/1/2017 - 7/2/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.41E+00 0.00E+00 1.41E+00 Co-58 <1.50E+00 0.00E+00 1.50E+00 Fe-59 <3.04E+00 0.00E+00 3.04E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 76 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 401 Sample Point 401 [ INDICATOR - SSW @ 4.9 miles ]

Sample ID: 447141 Sample Dates: 6/1/2017 - 7/2/2017 Nuclide Activity 2 Sigma Error MDA Co-60 <1.17E+00 0.00E+00 1.17E+00 Zn-65 <3.07E+00 0.00E+00 3.07E+00 Zr-95 <3.66E+00 0.00E+00 3.66E+00 Nb-95 <2.34E+00 0.00E+00 2.34E+00 I-131 <1.05E+01 0.00E+00 1.05E+01 Cs-134 <1.81E+00 0.00E+00 1.81E+00 Cs-137 <1.64E+00 0.00E+00 1.64E+00 BaLa-140 <4.77E+00 0.00E+00 4.77E+00 H3SW <-5.7E+01 0.00E+00 1.98E+02 Sample ID: 449193 Sample Dates: 7/2/2017 - 8/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.74E+00 0.00E+00 1.74E+00 Co-58 <2.19E+00 0.00E+00 2.19E+00 Fe-59 <4.75E+00 0.00E+00 4.75E+00 Co-60 <1.93E+00 0.00E+00 1.93E+00 Zn-65 <3.97E+00 0.00E+00 3.97E+00 Zr-95 <3.71E+00 0.00E+00 3.71E+00 Nb-95 <2.55E+00 0.00E+00 2.55E+00 I-131 <1.17E+01 0.00E+00 1.17E+01 Cs-134 <1.69E+00 0.00E+00 1.69E+00 Cs-137 <1.92E+00 0.00E+00 1.92E+00 BaLa-140 <7.11E+00 0.00E+00 7.11E+00 H3SW <-1.4E+01 0.00E+00 1.84E+02 Sample ID: 451161 Sample Dates: 8/1/2017 - 9/5/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.61E+00 0.00E+00 2.61E+00 Co-58 <2.47E+00 0.00E+00 2.47E+00 Fe-59 <6.26E+00 0.00E+00 6.26E+00 Co-60 <2.24E+00 0.00E+00 2.24E+00 Zn-65 <5.56E+00 0.00E+00 5.56E+00 Zr-95 <4.04E+00 0.00E+00 4.04E+00 Nb-95 <4.20E+00 0.00E+00 4.20E+00 I-131 <1.19E+01 0.00E+00 1.19E+01 Cs-134 <2.56E+00 0.00E+00 2.56E+00 Cs-137 <2.92E+00 0.00E+00 2.92E+00 BaLa-140 <5.80E+00 0.00E+00 5.80E+00 H3SW <-1.1E+02 0.00E+00 2.01E+02 Sample ID: 453416 Sample Dates: 9/5/2017 - 10/1/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.74E+00 0.00E+00 2.74E+00 Co-58 <4.48E+00 0.00E+00 4.48E+00 Fe-59 <8.19E+00 0.00E+00 8.19E+00 Co-60 <4.13E+00 0.00E+00 4.13E+00 Zn-65 <6.28E+00 0.00E+00 6.28E+00 Zr-95 <7.72E+00 0.00E+00 7.72E+00 Nb-95 <4.58E+00 0.00E+00 4.58E+00 I-131 <1.14E+01 0.00E+00 1.14E+01 Cs-134 <4.19E+00 0.00E+00 4.19E+00 Cs-137 <4.01E+00 0.00E+00 4.01E+00 BaLa-140 <6.80E+00 0.00E+00 6.80E+00 H3SW <-5.9E+01 0.00E+00 1.98E+02 Sample ID: 456014 Sample Dates: 10/1/2017 - 11/2/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.87E+00 0.00E+00 1.87E+00 Co-58 <2.45E+00 0.00E+00 2.45E+00 Fe-59 <5.18E+00 0.00E+00 5.18E+00 Co-60 <1.53E+00 0.00E+00 1.53E+00 Zn-65 <2.99E+00 0.00E+00 2.99E+00 Zr-95 <4.13E+00 0.00E+00 4.13E+00 Nb-95 <2.92E+00 0.00E+00 2.92E+00 I-131 <1.12E+01 0.00E+00 1.12E+01 Cs-134 <2.19E+00 0.00E+00 2.19E+00 Cs-137 <1.72E+00 0.00E+00 1.72E+00 BaLa-140 <6.69E+00 0.00E+00 6.69E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 77 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 401 Sample Point 401 [ INDICATOR - SSW @ 4.9 miles ]

Sample ID: 456014 Sample Dates: 10/1/2017 - 11/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.69E+02 0.00E+00 1.84E+02 Sample ID: 463064 Sample Dates: 11/2/2017 - 12/3/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.86E+00 0.00E+00 1.86E+00 Co-58 <2.17E+00 0.00E+00 2.17E+00 Fe-59 <4.40E+00 0.00E+00 4.40E+00 Co-60 <2.03E+00 0.00E+00 2.03E+00 Zn-65 <3.85E+00 0.00E+00 3.85E+00 Zr-95 <4.19E+00 0.00E+00 4.19E+00 Nb-95 <3.10E+00 0.00E+00 3.10E+00 I-131 <1.13E+01 0.00E+00 1.13E+01 Cs-134 <2.25E+00 0.00E+00 2.25E+00 Cs-137 <2.37E+00 0.00E+00 2.37E+00 BaLa-140 <4.70E+00 0.00E+00 4.70E+00 H3SW <6.35E+01 0.00E+00 1.87E+02 Sample ID: 464938 Sample Dates: 12/3/2017 - 1/1/2018 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.61E+00 0.00E+00 2.61E+00 Co-58 <3.54E+00 0.00E+00 3.54E+00 Fe-59 <9.53E+00 0.00E+00 9.53E+00 Co-60 <3.65E+00 0.00E+00 3.65E+00 Zn-65 <5.82E+00 0.00E+00 5.82E+00 Zr-95 <6.09E+00 0.00E+00 6.09E+00 Nb-95 <4.05E+00 0.00E+00 4.05E+00 I-131 <1.15E+01 0.00E+00 1.15E+01 Cs-134 <3.59E+00 0.00E+00 3.59E+00 Cs-137 <3.22E+00 0.00E+00 3.22E+00 BaLa-140 <8.34E+00 0.00E+00 8.34E+00 H3SW <8.51E+01 0.00E+00 1.77E+02 Sample Point 494 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432850 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+02 0.00E+00 2.56E+02 Sample ID: 433252 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.1E+03 0.00E+00 3.10E+02 Sample ID: 433669 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.90E+02 0.00E+00 2.50E+02 Sample ID: 434404 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.70E+01 0.00E+00 2.41E+02 Sample ID: 435048 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.0E+02 0.00E+00 2.52E+02 Sample ID: 435758 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW 3.45E+03 1.94E+02 2.31E+02 Sample ID: 436208 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.17E+02 0.00E+00 2.47E+02 Sample ID: 436659 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.03E+01 0.00E+00 2.46E+02 Sample ID: 437520 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.4E+01 0.00E+00 2.43E+02 Sample ID: 438250 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.1E+00 0.00E+00 2.31E+02 Sample ID: 438753 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-8.4E+03 0.00E+00 5.66E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 78 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 494 Sample Point 494 [ INDICATOR - -- @ 0 miles ]

Sample ID: 439096 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.1E+02 0.00E+00 2.49E+02 Sample ID: 439949 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.2E+02 0.00E+00 2.53E+02 Sample ID: 440521 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.48E+01 0.00E+00 2.29E+02 Sample ID: 441361 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.56E+00 0.00E+00 2.25E+02 Sample ID: 441772 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW 3.00E+02 1.43E+02 2.34E+02 Sample ID: 442219 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.08E+02 0.00E+00 2.34E+02 Sample ID: 442810 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.9E+01 0.00E+00 2.41E+02 Sample ID: 443248 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.1E+01 0.00E+00 2.41E+02 Sample ID: 443806 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.7E+01 0.00E+00 2.32E+02 Sample ID: 444200 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.6E+02 0.00E+00 2.45E+02 Sample ID: 445270 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.04E+01 0.00E+00 2.28E+02 Sample ID: 446269 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.20E+01 0.00E+00 2.31E+02 Sample ID: 446773 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.3E+02 0.00E+00 2.43E+02 Sample ID: 447099 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.47E+01 0.00E+00 2.42E+02 Sample ID: 447752 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.95E+01 0.00E+00 2.26E+02 Sample ID: 448216 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.4E+01 0.00E+00 2.28E+02 Sample ID: 448842 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.96E+02 0.00E+00 2.30E+02 Sample ID: 449155 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.96E+02 0.00E+00 2.26E+02 Sample ID: 449892 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW 2.29E+02 1.38E+02 2.29E+02 Sample ID: 450561 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.94E+01 0.00E+00 1.94E+01 Co-58 <1.62E+01 0.00E+00 1.62E+01 Fe-59 <2.42E+01 0.00E+00 2.42E+01 Co-60 <1.61E+01 0.00E+00 1.61E+01 Zn-65 <2.17E+01 0.00E+00 2.17E+01 Zr-95 <1.80E+01 0.00E+00 1.80E+01 Nb-95 <1.57E+01 0.00E+00 1.57E+01 I-131 <1.21E+01 0.00E+00 1.21E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <1.68E+01 0.00E+00 1.68E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 79 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 494 Sample Point 494 [ INDICATOR - -- @ 0 miles ]

Sample ID: 450561 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA La-140 <3.54E+01 0.00E+00 3.54E+01 Ba-140 <3.81E+01 0.00E+00 3.81E+01 Total-Gam 0.00E+00 H3SW <1.72E+01 0.00E+00 2.61E+02 Sample ID: 451601 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.07E+01 0.00E+00 1.07E+01 Co-58 <1.09E+01 0.00E+00 1.09E+01 Fe-59 <2.53E+01 0.00E+00 2.53E+01 Co-60 <1.40E+01 0.00E+00 1.40E+01 Zn-65 <3.09E+01 0.00E+00 3.09E+01 Zr-95 <1.86E+01 0.00E+00 1.86E+01 Nb-95 <1.89E+01 0.00E+00 1.89E+01 I-131 <1.78E+01 0.00E+00 1.78E+01 Cs-134 <1.38E+01 0.00E+00 1.38E+01 Cs-137 <2.06E+01 0.00E+00 2.06E+01 La-140 <8.65E+01 0.00E+00 8.65E+01 Ba-140 <5.49E+01 0.00E+00 5.49E+01 Total-Gam 0.00E+00 H3SW <2.02E+02 0.00E+00 2.40E+02 Sample ID: 461265 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.81E+00 0.00E+00 5.81E+00 Co-58 <3.94E+00 0.00E+00 3.94E+00 Fe-59 <1.00E+01 0.00E+00 1.00E+01 Co-60 <7.56E+00 0.00E+00 7.56E+00 Zn-65 <1.28E+01 0.00E+00 1.28E+01 Zr-95 <9.45E+00 0.00E+00 9.45E+00 Nb-95 <4.91E+00 0.00E+00 4.91E+00 I-131 <3.80E+00 0.00E+00 3.80E+00 Cs-134 <5.72E+00 0.00E+00 5.72E+00 Cs-137 <5.52E+00 0.00E+00 5.52E+00 BaLa-140 <8.78E+00 0.00E+00 8.78E+00 Total-Gam 0.00E+00 H3SW <-2.2E+01 0.00E+00 2.06E+02 Sample ID: 461913 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <4.37E+00 0.00E+00 4.37E+00 Co-58 <5.07E+00 0.00E+00 5.07E+00 Fe-59 <1.10E+01 0.00E+00 1.10E+01 Co-60 <6.37E+00 0.00E+00 6.37E+00 Zn-65 <8.46E+00 0.00E+00 8.46E+00 Zr-95 <8.81E+00 0.00E+00 8.81E+00 Nb-95 <5.64E+00 0.00E+00 5.64E+00 I-131 <4.85E+00 0.00E+00 4.85E+00 Cs-134 <5.00E+00 0.00E+00 5.00E+00 Cs-137 <6.16E+00 0.00E+00 6.16E+00 BaLa-140 <6.98E+00 0.00E+00 6.98E+00 Total-Gam 0.00E+00 H3SW <-5.1E+01 0.00E+00 1.78E+02 Sample ID: 464230 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.21E+00 0.00E+00 6.21E+00 Co-58 <6.43E+00 0.00E+00 6.43E+00 Fe-59 <1.19E+01 0.00E+00 1.19E+01 Co-60 <7.30E+00 0.00E+00 7.30E+00 Zn-65 <1.24E+01 0.00E+00 1.24E+01 Zr-95 <9.30E+00 0.00E+00 9.30E+00 Nb-95 <6.39E+00 0.00E+00 6.39E+00 I-131 <8.14E+00 0.00E+00 8.14E+00 Cs-134 <6.75E+00 0.00E+00 6.75E+00 Cs-137 <5.17E+00 0.00E+00 5.17E+00 BaLa-140 <7.48E+00 0.00E+00 7.48E+00 Total-Gam 0.00E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 80 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 494 Sample Point 494 [ INDICATOR - -- @ 0 miles ]

Sample ID: 464230 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.3E+01 0.00E+00 1.88E+02 Sample Point 495 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432851 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.85E+02 0.00E+00 2.41E+02 Sample ID: 433253 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.56E+01 0.00E+00 2.50E+02 Sample ID: 433670 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.31E+02 0.00E+00 2.33E+02 Sample ID: 434405 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.82E+02 0.00E+00 2.40E+02 Sample ID: 434396 Sample Dates: 1/4/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.88E+00 0.00E+00 7.88E+00 Co-58 <7.72E+00 0.00E+00 7.72E+00 Fe-59 <1.71E+01 0.00E+00 1.71E+01 Co-60 <9.44E+00 0.00E+00 9.44E+00 Zn-65 <1.76E+01 0.00E+00 1.76E+01 Zr-95 <1.56E+01 0.00E+00 1.56E+01 Nb-95 <9.66E+00 0.00E+00 9.66E+00 I-131 <2.54E+01 0.00E+00 2.54E+01 Cs-134 <7.80E+00 0.00E+00 7.80E+00 Cs-137 <7.93E+00 0.00E+00 7.93E+00 La-140 <5.76E+03 0.00E+00 5.76E+03 Ba-140 <5.43E+01 0.00E+00 5.43E+01 Total-Gam 0.00E+00 Sample ID: 435049 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.4E+02 0.00E+00 2.62E+02 Sample ID: 435759 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.18E+01 0.00E+00 2.41E+02 Sample ID: 436209 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.65E+02 0.00E+00 2.28E+02 Sample ID: 436660 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.55E+02 Sample ID: 436651 Sample Dates: 2/8/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.91E+00 0.00E+00 6.91E+00 Co-58 <9.38E+00 0.00E+00 9.38E+00 Fe-59 <1.75E+01 0.00E+00 1.75E+01 Co-60 <7.62E+00 0.00E+00 7.62E+00 Zn-65 <1.65E+01 0.00E+00 1.65E+01 Zr-95 <1.47E+01 0.00E+00 1.47E+01 Nb-95 <9.32E+00 0.00E+00 9.32E+00 I-131 <2.13E+01 0.00E+00 2.13E+01 Cs-134 <8.72E+00 0.00E+00 8.72E+00 Cs-137 <7.93E+00 0.00E+00 7.93E+00 La-140 <5.63E+02 0.00E+00 5.63E+02 Ba-140 <5.35E+01 0.00E+00 5.35E+01 Total-Gam 0.00E+00 Sample ID: 437521 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+01 0.00E+00 2.42E+02 Sample ID: 438251 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-7.9E+01 0.00E+00 2.37E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 81 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 495 Sample Point 495 [ INDICATOR - -- @ 0 miles ]

Sample ID: 438754 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.3E+02 0.00E+00 2.40E+02 Sample ID: 439097 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.46E+02 Sample ID: 439453 Sample Dates: 3/7/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.81E+00 0.00E+00 7.81E+00 Co-58 <9.75E+00 0.00E+00 9.75E+00 Fe-59 <1.78E+01 0.00E+00 1.78E+01 Co-60 <5.96E+00 0.00E+00 5.96E+00 Zn-65 <1.66E+01 0.00E+00 1.66E+01 Zr-95 <1.39E+01 0.00E+00 1.39E+01 Nb-95 <1.12E+01 0.00E+00 1.12E+01 I-131 <2.01E+01 0.00E+00 2.01E+01 Cs-134 <6.68E+00 0.00E+00 6.68E+00 Cs-137 <8.41E+00 0.00E+00 8.41E+00 La-140 <1.08E+03 0.00E+00 1.08E+03 Ba-140 <3.96E+01 0.00E+00 3.96E+01 Total-Gam 0.00E+00 Sample ID: 439950 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-8.8E+01 0.00E+00 2.53E+02 Sample ID: 440522 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-6.2E+01 0.00E+00 2.34E+02 Sample ID: 441362 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.21E+01 0.00E+00 2.24E+02 Sample ID: 441773 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.51E+02 0.00E+00 2.39E+02 Sample ID: 442206 Sample Dates: 4/4/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.34E+00 0.00E+00 8.34E+00 Co-58 <9.14E+00 0.00E+00 9.14E+00 Fe-59 <1.76E+01 0.00E+00 1.76E+01 Co-60 <8.08E+00 0.00E+00 8.08E+00 Zn-65 <1.81E+01 0.00E+00 1.81E+01 Zr-95 <1.62E+01 0.00E+00 1.62E+01 Nb-95 <9.94E+00 0.00E+00 9.94E+00 I-131 <2.02E+01 0.00E+00 2.02E+01 Cs-134 <8.57E+00 0.00E+00 8.57E+00 Cs-137 <6.27E+00 0.00E+00 6.27E+00 La-140 <7.00E+02 0.00E+00 7.00E+02 Ba-140 <4.95E+01 0.00E+00 4.95E+01 Total-Gam 0.00E+00 Sample ID: 442220 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.49E+02 0.00E+00 2.53E+02 Sample ID: 442811 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.16E+01 0.00E+00 2.43E+02 Sample ID: 443249 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.01E+02 0.00E+00 2.62E+02 Sample ID: 443807 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.68E+01 0.00E+00 2.43E+02 Sample ID: 444201 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.0E+02 0.00E+00 2.42E+02 Sample ID: 444192 Sample Dates: 5/2/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <9.98E+00 0.00E+00 9.98E+00 Co-58 <9.73E+00 0.00E+00 9.73E+00 Fe-59 <1.95E+01 0.00E+00 1.95E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 82 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 495 Sample Point 495 [ INDICATOR - -- @ 0 miles ]

Sample ID: 444192 Sample Dates: 5/2/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Co-60 <8.46E+00 0.00E+00 8.46E+00 Zn-65 <1.52E+01 0.00E+00 1.52E+01 Zr-95 <1.12E+01 0.00E+00 1.12E+01 Nb-95 <1.09E+01 0.00E+00 1.09E+01 I-131 <4.03E+01 0.00E+00 4.03E+01 Cs-134 <8.09E+00 0.00E+00 8.09E+00 Cs-137 <7.42E+00 0.00E+00 7.42E+00 La-140 <2.50E+04 0.00E+00 2.50E+04 Ba-140 <7.55E+01 0.00E+00 7.55E+01 Total-Gam 0.00E+00 Sample ID: 445271 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.6E+01 0.00E+00 2.35E+02 Sample ID: 446270 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.4E+01 0.00E+00 2.48E+02 Sample ID: 446774 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-6.8E+01 0.00E+00 2.48E+02 Sample ID: 447100 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.24E+02 0.00E+00 2.26E+02 Sample ID: 447417 Sample Dates: 6/6/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.81E+00 0.00E+00 7.81E+00 Co-58 <7.42E+00 0.00E+00 7.42E+00 Fe-59 <1.32E+01 0.00E+00 1.32E+01 Co-60 <5.16E+00 0.00E+00 5.16E+00 Zn-65 <1.66E+01 0.00E+00 1.66E+01 Zr-95 <1.28E+01 0.00E+00 1.28E+01 Nb-95 <9.24E+00 0.00E+00 9.24E+00 I-131 <2.11E+01 0.00E+00 2.11E+01 Cs-134 <7.25E+00 0.00E+00 7.25E+00 Cs-137 <7.68E+00 0.00E+00 7.68E+00 La-140 <7.27E+02 0.00E+00 7.27E+02 Ba-140 <3.52E+01 0.00E+00 3.52E+01 Total-Gam 0.00E+00 Sample ID: 447753 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.9E+01 0.00E+00 2.33E+02 Sample ID: 448217 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.60E+01 0.00E+00 2.23E+02 Sample ID: 448843 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.40E+02 0.00E+00 2.21E+02 Sample ID: 449156 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.93E+02 0.00E+00 2.27E+02 Sample ID: 449882 Sample Dates: 7/5/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.54E+00 0.00E+00 7.54E+00 Co-58 <6.75E+00 0.00E+00 6.75E+00 Fe-59 <1.63E+01 0.00E+00 1.63E+01 Co-60 <6.67E+00 0.00E+00 6.67E+00 Zn-65 <1.58E+01 0.00E+00 1.58E+01 Zr-95 <1.40E+01 0.00E+00 1.40E+01 Nb-95 <1.08E+01 0.00E+00 1.08E+01 I-131 <2.36E+01 0.00E+00 2.36E+01 Cs-134 <8.42E+00 0.00E+00 8.42E+00 Cs-137 <8.87E+00 0.00E+00 8.87E+00 La-140 <1.32E+03 0.00E+00 1.32E+03 Ba-140 <6.01E+01 0.00E+00 6.01E+01 Total-Gam 0.00E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 83 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 495 Sample Point 495 [ INDICATOR - -- @ 0 miles ]

Sample ID: 449893 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.87E+02 0.00E+00 2.29E+02 Sample ID: 450562 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.34E+00 0.00E+00 7.34E+00 Co-58 <6.94E+00 0.00E+00 6.94E+00 Fe-59 <1.50E+01 0.00E+00 1.50E+01 Co-60 <4.20E+00 0.00E+00 4.20E+00 Zn-65 <1.76E+01 0.00E+00 1.76E+01 Zr-95 <1.48E+01 0.00E+00 1.48E+01 Nb-95 <7.64E+00 0.00E+00 7.64E+00 I-131 <7.62E+00 0.00E+00 7.62E+00 Cs-134 <4.81E+00 0.00E+00 4.81E+00 Cs-137 <8.17E+00 0.00E+00 8.17E+00 La-140 <8.78E+00 0.00E+00 8.78E+00 Ba-140 <2.57E+01 0.00E+00 2.57E+01 Total-Gam 0.00E+00 H3SW <5.18E+01 0.00E+00 2.33E+02 Sample ID: 451602 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.43E+00 0.00E+00 5.43E+00 Co-58 <7.20E+00 0.00E+00 7.20E+00 Fe-59 <1.89E+01 0.00E+00 1.89E+01 Co-60 <7.60E+00 0.00E+00 7.60E+00 Zn-65 <1.78E+01 0.00E+00 1.78E+01 Zr-95 <1.42E+01 0.00E+00 1.42E+01 Nb-95 <9.20E+00 0.00E+00 9.20E+00 I-131 <9.58E+00 0.00E+00 9.58E+00 Cs-134 <6.64E+00 0.00E+00 6.63E+00 Cs-137 <7.41E+00 0.00E+00 7.41E+00 La-140 <4.18E+01 0.00E+00 4.18E+01 Ba-140 <2.73E+01 0.00E+00 2.73E+01 Total-Gam 0.00E+00 H3SW <1.58E+02 0.00E+00 2.35E+02 Sample ID: 461266 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <4.67E+00 0.00E+00 4.67E+00 Co-58 <5.11E+00 0.00E+00 5.11E+00 Fe-59 <1.25E+01 0.00E+00 1.25E+01 Co-60 <5.06E+00 0.00E+00 5.06E+00 Zn-65 <1.29E+01 0.00E+00 1.29E+01 Zr-95 <8.87E+00 0.00E+00 8.87E+00 Nb-95 <5.17E+00 0.00E+00 5.17E+00 I-131 <7.00E+00 0.00E+00 7.00E+00 Cs-134 <5.25E+00 0.00E+00 5.25E+00 Cs-137 <5.97E+00 0.00E+00 5.97E+00 BaLa-140 <6.68E+00 0.00E+00 6.68E+00 Total-Gam 0.00E+00 H3SW <-1.7E+02 0.00E+00 2.06E+02 Sample ID: 461914 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.84E+00 0.00E+00 5.84E+00 Co-58 <4.83E+00 0.00E+00 4.83E+00 Fe-59 <1.03E+01 0.00E+00 1.03E+01 Co-60 <5.82E+00 0.00E+00 5.82E+00 Zn-65 <9.51E+00 0.00E+00 9.51E+00 Zr-95 <7.11E+00 0.00E+00 7.11E+00 Nb-95 <5.50E+00 0.00E+00 5.50E+00 I-131 <5.95E+00 0.00E+00 5.95E+00 Cs-134 <4.61E+00 0.00E+00 4.61E+00 Cs-137 <4.52E+00 0.00E+00 4.52E+00 BaLa-140 <6.61E+00 0.00E+00 6.61E+00 Total-Gam 0.00E+00 H3SW <2.82E+01 0.00E+00 1.79E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 84 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 495 Sample Point 495 [ INDICATOR - -- @ 0 miles ]

Sample ID: 464231 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.77E+00 0.00E+00 5.77E+00 Co-58 <5.38E+00 0.00E+00 5.38E+00 Fe-59 <1.14E+01 0.00E+00 1.14E+01 Co-60 <7.02E+00 0.00E+00 7.02E+00 Zn-65 <1.08E+01 0.00E+00 1.08E+01 Zr-95 <1.16E+01 0.00E+00 1.16E+01 Nb-95 <5.50E+00 0.00E+00 5.50E+00 I-131 <8.94E+00 0.00E+00 8.94E+00 Cs-134 <5.35E+00 0.00E+00 5.35E+00 Cs-137 <6.10E+00 0.00E+00 6.10E+00 BaLa-140 <6.43E+00 0.00E+00 6.43E+00 Total-Gam 0.00E+00 H3SW <-8.7E+01 0.00E+00 1.88E+02 Sample Point 496 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432852 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.1E+01 0.00E+00 2.52E+02 Sample ID: 433254 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <9.54E+00 0.00E+00 2.51E+02 Sample ID: 433671 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.22E+02 0.00E+00 2.32E+02 Sample ID: 434406 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.58E+01 0.00E+00 2.40E+02 Sample ID: 434397 Sample Dates: 1/4/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.69E+00 0.00E+00 8.69E+00 Co-58 <7.72E+00 0.00E+00 7.73E+00 Fe-59 <1.72E+01 0.00E+00 1.72E+01 Co-60 <8.09E+00 0.00E+00 8.09E+00 Zn-65 <1.68E+01 0.00E+00 1.68E+01 Zr-95 <1.47E+01 0.00E+00 1.47E+01 Nb-95 <9.33E+00 0.00E+00 9.33E+00 I-131 <3.04E+01 0.00E+00 3.04E+01 Cs-134 <7.45E+00 0.00E+00 7.45E+00 Cs-137 <8.64E+00 0.00E+00 8.64E+00 La-140 <5.09E+03 0.00E+00 5.09E+03 Ba-140 <5.62E+01 0.00E+00 5.62E+01 Total-Gam 0.00E+00 Sample ID: 435050 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.1E+02 0.00E+00 2.62E+02 Sample ID: 435760 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.58E+02 0.00E+00 2.41E+02 Sample ID: 436210 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.04E+01 0.00E+00 2.27E+02 Sample ID: 436661 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-9.4E+01 0.00E+00 2.54E+02 Sample ID: 436652 Sample Dates: 2/8/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <9.33E+00 0.00E+00 9.33E+00 Co-58 <7.04E+00 0.00E+00 7.04E+00 Fe-59 <1.95E+01 0.00E+00 1.95E+01 Co-60 <4.22E+00 0.00E+00 4.22E+00 Zn-65 <1.48E+01 0.00E+00 1.48E+01 Zr-95 <9.38E+00 0.00E+00 9.38E+00 Nb-95 <1.06E+01 0.00E+00 1.06E+01 I-131 <2.10E+01 0.00E+00 2.10E+01 Cs-134 <7.60E+00 0.00E+00 7.60E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 85 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 496 Sample Point 496 [ INDICATOR - -- @ 0 miles ]

Sample ID: 436652 Sample Dates: 2/8/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <7.15E+00 0.00E+00 7.15E+00 La-140 <4.83E+02 0.00E+00 4.83E+02 Ba-140 <5.37E+01 0.00E+00 5.37E+01 Total-Gam 0.00E+00 Sample ID: 437522 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.6E+01 0.00E+00 2.42E+02 Sample ID: 438252 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.66E+01 0.00E+00 2.35E+02 Sample ID: 438755 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+01 0.00E+00 2.41E+02 Sample ID: 439098 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+02 0.00E+00 2.49E+02 Sample ID: 439454 Sample Dates: 3/7/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <9.08E+00 0.00E+00 9.08E+00 Co-58 <7.02E+00 0.00E+00 7.02E+00 Fe-59 <1.76E+01 0.00E+00 1.76E+01 Co-60 <8.52E+00 0.00E+00 8.52E+00 Zn-65 <1.48E+01 0.00E+00 1.48E+01 Zr-95 <1.48E+01 0.00E+00 1.48E+01 Nb-95 <1.10E+01 0.00E+00 1.10E+01 I-131 <1.90E+01 0.00E+00 1.90E+01 Cs-134 <6.27E+00 0.00E+00 6.27E+00 Cs-137 <7.15E+00 0.00E+00 7.15E+00 La-140 <6.54E+02 0.00E+00 6.54E+02 Ba-140 <5.64E+01 0.00E+00 5.64E+01 Total-Gam 0.00E+00 Sample ID: 439951 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.3E+02 0.00E+00 2.54E+02 Sample ID: 440523 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.7E+01 0.00E+00 2.34E+02 Sample ID: 441363 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.76E+01 0.00E+00 2.24E+02 Sample ID: 441774 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <9.44E+01 0.00E+00 2.39E+02 Sample ID: 442207 Sample Dates: 4/4/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.53E+00 0.00E+00 7.53E+00 Co-58 <8.06E+00 0.00E+00 8.07E+00 Fe-59 <1.32E+01 0.00E+00 1.32E+01 Co-60 <6.67E+00 0.00E+00 6.67E+00 Zn-65 <1.57E+01 0.00E+00 1.57E+01 Zr-95 <1.49E+01 0.00E+00 1.49E+01 Nb-95 <1.22E+01 0.00E+00 1.22E+01 I-131 <2.13E+01 0.00E+00 2.13E+01 Cs-134 <7.94E+00 0.00E+00 7.94E+00 Cs-137 <7.42E+00 0.00E+00 7.42E+00 La-140 <8.25E+02 0.00E+00 8.25E+02 Ba-140 <4.62E+01 0.00E+00 4.62E+01 Total-Gam 0.00E+00 Sample ID: 442221 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <9.00E+01 0.00E+00 2.54E+02 Sample ID: 442812 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.79E+02 0.00E+00 2.46E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 86 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 496 Sample Point 496 [ INDICATOR - -- @ 0 miles ]

Sample ID: 443250 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <3.46E+01 0.00E+00 2.64E+02 Sample ID: 443808 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.72E+01 0.00E+00 2.43E+02 Sample ID: 444202 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.1E+02 0.00E+00 2.42E+02 Sample ID: 444193 Sample Dates: 5/2/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.40E+00 0.00E+00 7.40E+00 Co-58 <8.57E+00 0.00E+00 8.58E+00 Fe-59 <1.63E+01 0.00E+00 1.63E+01 Co-60 <7.92E+00 0.00E+00 7.92E+00 Zn-65 <1.53E+01 0.00E+00 1.53E+01 Zr-95 <1.92E+01 0.00E+00 1.92E+01 Nb-95 <1.28E+01 0.00E+00 1.28E+01 I-131 <4.84E+01 0.00E+00 4.84E+01 Cs-134 <5.73E+00 0.00E+00 5.73E+00 Cs-137 <9.09E+00 0.00E+00 9.09E+00 La-140 <8.97E+04 0.00E+00 8.97E+04 Ba-140 <8.09E+01 0.00E+00 8.09E+01 Total-Gam 0.00E+00 Sample ID: 445272 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.9E+01 0.00E+00 2.30E+02 Sample ID: 446271 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.3E+01 0.00E+00 2.48E+02 Sample ID: 446775 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.1E+01 0.00E+00 2.43E+02 Sample ID: 447101 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.36E+01 0.00E+00 2.26E+02 Sample ID: 447418 Sample Dates: 6/6/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <4.67E+00 0.00E+00 4.67E+00 Co-58 <5.93E+00 0.00E+00 5.93E+00 Fe-59 <1.95E+01 0.00E+00 1.95E+01 Co-60 <8.52E+00 0.00E+00 8.52E+00 Zn-65 <1.48E+01 0.00E+00 1.48E+01 Zr-95 <1.81E+01 0.00E+00 1.81E+01 Nb-95 <1.04E+01 0.00E+00 1.04E+01 I-131 <1.92E+01 0.00E+00 1.92E+01 Cs-134 <8.02E+00 0.00E+00 8.02E+00 Cs-137 <7.93E+00 0.00E+00 7.93E+00 La-140 <1.26E+03 0.00E+00 1.26E+03 Ba-140 <3.71E+01 0.00E+00 3.71E+01 Total-Gam 0.00E+00 Sample ID: 447754 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.2E+01 0.00E+00 2.33E+02 Sample ID: 448218 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.10E+02 0.00E+00 2.22E+02 Sample ID: 448844 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.89E+01 0.00E+00 2.20E+02 Sample ID: 449157 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.09E+02 0.00E+00 2.40E+02 Sample ID: 449883 Sample Dates: 7/5/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.94E+00 0.00E+00 6.94E+00 Co-58 <8.72E+00 0.00E+00 8.72E+00 Fe-59 <1.96E+01 0.00E+00 1.96E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 87 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 496 Sample Point 496 [ INDICATOR - -- @ 0 miles ]

Sample ID: 449883 Sample Dates: 7/5/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Co-60 <9.33E+00 0.00E+00 9.33E+00 Zn-65 <1.97E+01 0.00E+00 1.97E+01 Zr-95 <1.69E+01 0.00E+00 1.69E+01 Nb-95 <1.18E+01 0.00E+00 1.18E+01 I-131 <2.32E+01 0.00E+00 2.32E+01 Cs-134 <7.60E+00 0.00E+00 7.60E+00 Cs-137 <8.41E+00 0.00E+00 8.41E+00 La-140 <1.11E+03 0.00E+00 1.11E+03 Ba-140 <5.28E+01 0.00E+00 5.28E+01 Total-Gam 0.00E+00 Sample ID: 449894 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.15E+02 0.00E+00 2.22E+02 Sample ID: 450563 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.15E+00 0.00E+00 8.15E+00 Co-58 <8.97E+00 0.00E+00 8.97E+00 Fe-59 <1.11E+01 0.00E+00 1.11E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <1.24E+01 0.00E+00 1.24E+01 Zr-95 <1.44E+01 0.00E+00 1.44E+01 Nb-95 <6.89E+00 0.00E+00 6.89E+00 I-131 <7.67E+00 0.00E+00 7.67E+00 Cs-134 <7.60E+00 0.00E+00 7.60E+00 Cs-137 <9.08E+00 0.00E+00 9.08E+00 La-140 <9.90E+00 0.00E+00 9.90E+00 Ba-140 <2.77E+01 0.00E+00 2.77E+01 Total-Gam 0.00E+00 H3SW <-3.2E+01 0.00E+00 2.32E+02 Sample ID: 451603 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.47E+00 0.00E+00 8.47E+00 Co-58 <8.56E+00 0.00E+00 8.57E+00 Fe-59 <1.51E+01 0.00E+00 1.51E+01 Co-60 <9.86E+00 0.00E+00 9.86E+00 Zn-65 <1.92E+01 0.00E+00 1.92E+01 Zr-95 <1.18E+01 0.00E+00 1.18E+01 Nb-95 <1.07E+01 0.00E+00 1.07E+01 I-131 <1.12E+01 0.00E+00 1.12E+01 Cs-134 <8.51E+00 0.00E+00 8.51E+00 Cs-137 <7.41E+00 0.00E+00 7.41E+00 La-140 <4.05E+01 0.00E+00 4.05E+01 Ba-140 <2.98E+01 0.00E+00 2.98E+01 Total-Gam 0.00E+00 H3SW <2.05E+01 0.00E+00 2.36E+02 Sample ID: 461267 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.34E+00 0.00E+00 6.34E+00 Co-58 <5.23E+00 0.00E+00 5.23E+00 Fe-59 <9.17E+00 0.00E+00 9.17E+00 Co-60 <5.42E+00 0.00E+00 5.42E+00 Zn-65 <1.02E+01 0.00E+00 1.02E+01 Zr-95 <9.43E+00 0.00E+00 9.43E+00 Nb-95 <5.97E+00 0.00E+00 5.97E+00 I-131 <6.32E+00 0.00E+00 6.32E+00 Cs-134 <6.13E+00 0.00E+00 6.13E+00 Cs-137 <6.04E+00 0.00E+00 6.04E+00 BaLa-140 <6.52E+00 0.00E+00 6.52E+00 Total-Gam 0.00E+00 H3SW <-1.0E+02 0.00E+00 2.05E+02 Sample ID: 461915 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.23E+00 0.00E+00 5.23E+00 Co-58 <4.50E+00 0.00E+00 4.50E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 88 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 496 Sample Point 496 [ INDICATOR - -- @ 0 miles ]

Sample ID: 461915 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Fe-59 <8.86E+00 0.00E+00 8.86E+00 Co-60 <6.44E+00 0.00E+00 6.44E+00 Zn-65 <1.42E+01 0.00E+00 1.42E+01 Zr-95 <1.01E+01 0.00E+00 1.01E+01 Nb-95 <6.04E+00 0.00E+00 6.04E+00 I-131 <7.04E+00 0.00E+00 7.04E+00 Cs-134 <7.39E+00 0.00E+00 7.39E+00 Cs-137 <5.33E+00 0.00E+00 5.33E+00 BaLa-140 <6.14E+00 0.00E+00 6.14E+00 Total-Gam 0.00E+00 H3SW <-5.6E+01 0.00E+00 1.78E+02 Sample ID: 464232 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.53E+00 0.00E+00 5.53E+00 Co-58 <5.72E+00 0.00E+00 5.72E+00 Fe-59 <9.20E+00 0.00E+00 9.20E+00 Co-60 <5.42E+00 0.00E+00 5.42E+00 Zn-65 <1.10E+01 0.00E+00 1.10E+01 Zr-95 <8.85E+00 0.00E+00 8.85E+00 Nb-95 <4.37E+00 0.00E+00 4.37E+00 I-131 <7.75E+00 0.00E+00 7.75E+00 Cs-134 <5.95E+00 0.00E+00 5.95E+00 Cs-137 <4.52E+00 0.00E+00 4.52E+00 BaLa-140 <9.33E+00 0.00E+00 9.33E+00 Total-Gam 0.00E+00 H3SW <-5.6E+01 0.00E+00 1.88E+02 Sample Point 497 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432853 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <3.68E+01 0.00E+00 2.51E+02 Sample ID: 433255 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.49E+01 0.00E+00 2.51E+02 Sample ID: 433672 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.31E+02 0.00E+00 2.33E+02 Sample ID: 434407 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.91E+01 0.00E+00 2.39E+02 Sample ID: 434398 Sample Dates: 1/4/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <9.79E+00 0.00E+00 9.79E+00 Co-58 <8.56E+00 0.00E+00 8.56E+00 Fe-59 <1.67E+01 0.00E+00 1.67E+01 Co-60 <7.33E+00 0.00E+00 7.33E+00 Zn-65 <1.71E+01 0.00E+00 1.71E+01 Zr-95 <1.55E+01 0.00E+00 1.55E+01 Nb-95 <1.20E+01 0.00E+00 1.20E+01 I-131 <4.76E+01 0.00E+00 4.76E+01 Cs-134 <7.67E+00 0.00E+00 7.67E+00 Cs-137 <7.68E+00 0.00E+00 7.68E+00 La-140 <4.78E+04 0.00E+00 4.78E+04 Ba-140 <9.19E+01 0.00E+00 9.19E+01 Total-Gam 0.00E+00 Sample ID: 435051 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.5E+02 0.00E+00 2.64E+02 Sample ID: 435761 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.08E+02 0.00E+00 2.41E+02 Sample ID: 436211 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.12E+02 0.00E+00 2.37E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 89 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 497 Sample Point 497 [ INDICATOR - -- @ 0 miles ]

Sample ID: 436662 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.54E+02 Sample ID: 436653 Sample Dates: 2/8/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.81E+00 0.00E+00 7.81E+00 Co-58 <9.19E+00 0.00E+00 9.19E+00 Fe-59 <1.69E+01 0.00E+00 1.69E+01 Co-60 <6.60E+00 0.00E+00 6.60E+00 Zn-65 <1.48E+01 0.00E+00 1.48E+01 Zr-95 <1.21E+01 0.00E+00 1.21E+01 Nb-95 <7.86E+00 0.00E+00 7.86E+00 I-131 <2.25E+01 0.00E+00 2.25E+01 Cs-134 <6.68E+00 0.00E+00 6.68E+00 Cs-137 <6.27E+00 0.00E+00 6.27E+00 La-140 <1.19E+03 0.00E+00 1.19E+03 Ba-140 <5.20E+01 0.00E+00 5.20E+01 Total-Gam 0.00E+00 Sample ID: 437523 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.7E+01 0.00E+00 2.43E+02 Sample ID: 438253 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.75E+01 0.00E+00 2.33E+02 Sample ID: 438756 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.0E+02 0.00E+00 2.40E+02 Sample ID: 439099 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.46E+02 Sample ID: 439455 Sample Dates: 3/7/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.61E+00 0.00E+00 8.61E+00 Co-58 <7.42E+00 0.00E+00 7.42E+00 Fe-59 <1.52E+01 0.00E+00 1.52E+01 Co-60 <7.89E+00 0.00E+00 7.89E+00 Zn-65 <1.57E+01 0.00E+00 1.57E+01 Zr-95 <1.33E+01 0.00E+00 1.33E+01 Nb-95 <1.07E+01 0.00E+00 1.07E+01 I-131 <2.22E+01 0.00E+00 2.22E+01 Cs-134 <8.57E+00 0.00E+00 8.57E+00 Cs-137 <7.93E+00 0.00E+00 7.93E+00 La-140 <1.13E+03 0.00E+00 1.13E+03 Ba-140 <5.43E+01 0.00E+00 5.43E+01 Total-Gam 0.00E+00 Sample ID: 439952 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.53E+02 Sample ID: 440524 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.97E+00 0.00E+00 2.36E+02 Sample ID: 441364 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.76E+01 0.00E+00 2.24E+02 Sample ID: 441775 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.0E+01 0.00E+00 2.40E+02 Sample ID: 442208 Sample Dates: 4/4/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.61E+00 0.00E+00 8.61E+00 Co-58 <1.03E+01 0.00E+00 1.03E+01 Fe-59 <1.60E+01 0.00E+00 1.61E+01 Co-60 <7.62E+00 0.00E+00 7.62E+00 Zn-65 <1.39E+01 0.00E+00 1.39E+01 Zr-95 <1.44E+01 0.00E+00 1.44E+01 Nb-95 <1.15E+01 0.00E+00 1.15E+01 I-131 <1.77E+01 0.00E+00 1.77E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 90 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 497 Sample Point 497 [ INDICATOR - -- @ 0 miles ]

Sample ID: 442208 Sample Dates: 4/4/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <7.68E+00 0.00E+00 7.68E+00 Cs-137 <7.68E+00 0.00E+00 7.68E+00 La-140 <9.59E+02 0.00E+00 9.59E+02 Ba-140 <4.39E+01 0.00E+00 4.39E+01 Total-Gam 0.00E+00 Sample ID: 442222 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.37E+01 0.00E+00 2.52E+02 Sample ID: 442813 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.81E+02 0.00E+00 2.46E+02 Sample ID: 443251 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.9E+01 0.00E+00 2.63E+02 Sample ID: 443809 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.96E+01 0.00E+00 2.44E+02 Sample ID: 444203 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.8E+02 0.00E+00 2.42E+02 Sample ID: 444194 Sample Dates: 5/2/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.38E+00 0.00E+00 7.38E+00 Co-58 <8.49E+00 0.00E+00 8.49E+00 Fe-59 <1.97E+01 0.00E+00 1.97E+01 Co-60 <5.98E+00 0.00E+00 5.98E+00 Zn-65 <1.70E+01 0.00E+00 1.70E+01 Zr-95 <1.65E+01 0.00E+00 1.65E+01 Nb-95 <1.18E+01 0.00E+00 1.18E+01 I-131 <5.31E+01 0.00E+00 5.31E+01 Cs-134 <8.01E+00 0.00E+00 8.01E+00 Cs-137 <8.41E+00 0.00E+00 8.42E+00 La-140 <5.27E+04 0.00E+00 5.27E+04 Ba-140 <5.84E+01 0.00E+00 5.84E+01 Total-Gam 0.00E+00 Sample ID: 445273 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.8E+01 0.00E+00 2.31E+02 Sample ID: 446272 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <0.00E+00 0.00E+00 2.48E+02 Sample ID: 446776 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-9.7E+01 0.00E+00 2.42E+02 Sample ID: 447102 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <3.43E+01 0.00E+00 2.26E+02 Sample ID: 447419 Sample Dates: 6/6/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.36E+00 0.00E+00 8.36E+00 Co-58 <8.09E+00 0.00E+00 8.09E+00 Fe-59 <1.79E+01 0.00E+00 1.79E+01 Co-60 <7.30E+00 0.00E+00 7.30E+00 Zn-65 <1.82E+01 0.00E+00 1.82E+01 Zr-95 <1.44E+01 0.00E+00 1.44E+01 Nb-95 <1.02E+01 0.00E+00 1.02E+01 I-131 <2.32E+01 0.00E+00 2.32E+01 Cs-134 <7.77E+00 0.00E+00 7.77E+00 Cs-137 <9.30E+00 0.00E+00 9.30E+00 La-140 <1.03E+03 0.00E+00 1.03E+03 Ba-140 <4.81E+01 0.00E+00 4.81E+01 Total-Gam 0.00E+00 Sample ID: 447755 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.27E+01 0.00E+00 2.33E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 91 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 497 Sample Point 497 [ INDICATOR - -- @ 0 miles ]

Sample ID: 448219 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.15E+02 0.00E+00 2.22E+02 Sample ID: 448845 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.02E+02 0.00E+00 2.22E+02 Sample ID: 449158 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.45E+02 0.00E+00 2.27E+02 Sample ID: 449884 Sample Dates: 7/5/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <9.43E+00 0.00E+00 9.43E+00 Co-58 <8.44E+00 0.00E+00 8.44E+00 Fe-59 <1.83E+01 0.00E+00 1.83E+01 Co-60 <2.99E+00 0.00E+00 2.99E+00 Zn-65 <2.43E+01 0.00E+00 2.43E+01 Zr-95 <1.71E+01 0.00E+00 1.72E+01 Nb-95 <9.77E+00 0.00E+00 9.77E+00 I-131 <3.24E+01 0.00E+00 3.24E+01 Cs-134 <6.71E+00 0.00E+00 6.71E+00 Cs-137 <1.01E+01 0.00E+00 1.01E+01 La-140 <9.13E+03 0.00E+00 9.13E+03 Ba-140 <5.92E+01 0.00E+00 5.92E+01 Total-Gam 0.00E+00 Sample ID: 449895 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.77E+02 0.00E+00 2.21E+02 Sample ID: 450564 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.45E+00 0.00E+00 6.45E+00 Co-58 <7.55E+00 0.00E+00 7.55E+00 Fe-59 <1.45E+01 0.00E+00 1.45E+01 Co-60 <7.28E+00 0.00E+00 7.27E+00 Zn-65 <2.04E+01 0.00E+00 2.04E+01 Zr-95 <1.46E+01 0.00E+00 1.46E+01 Nb-95 <8.88E+00 0.00E+00 8.87E+00 I-131 <7.10E+00 0.00E+00 7.10E+00 Cs-134 <6.42E+00 0.00E+00 6.42E+00 Cs-137 <1.10E+01 0.00E+00 1.10E+01 La-140 <9.19E+00 0.00E+00 9.19E+00 Ba-140 <2.24E+01 0.00E+00 2.24E+01 Total-Gam 0.00E+00 H3SW <1.31E+02 0.00E+00 2.34E+02 Sample ID: 451604 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.12E+00 0.00E+00 7.12E+00 Co-58 <6.24E+00 0.00E+00 6.24E+00 Fe-59 <1.36E+01 0.00E+00 1.36E+01 Co-60 <8.06E+00 0.00E+00 8.06E+00 Zn-65 <1.54E+01 0.00E+00 1.54E+01 Zr-95 <1.33E+01 0.00E+00 1.33E+01 Nb-95 <7.98E+00 0.00E+00 7.98E+00 I-131 <1.11E+01 0.00E+00 1.11E+01 Cs-134 <8.36E+00 0.00E+00 8.36E+00 Cs-137 <6.57E+00 0.00E+00 6.57E+00 La-140 <4.31E+01 0.00E+00 4.31E+01 Ba-140 <3.55E+01 0.00E+00 3.55E+01 Total-Gam 0.00E+00 H3SW <1.87E+01 0.00E+00 2.35E+02 Sample ID: 461268 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <4.21E+00 0.00E+00 4.21E+00 Co-58 <5.62E+00 0.00E+00 5.62E+00 Fe-59 <8.27E+00 0.00E+00 8.27E+00 Co-60 <6.03E+00 0.00E+00 6.03E+00 Zn-65 <1.23E+01 0.00E+00 1.23E+01 Zr-95 <9.76E+00 0.00E+00 9.76E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 92 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 497 Sample Point 497 [ INDICATOR - -- @ 0 miles ]

Sample ID: 461268 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Nb-95 <5.62E+00 0.00E+00 5.62E+00 I-131 <5.80E+00 0.00E+00 5.80E+00 Cs-134 <7.41E+00 0.00E+00 7.41E+00 Cs-137 <6.01E+00 0.00E+00 6.01E+00 BaLa-140 <3.89E+00 0.00E+00 3.89E+00 Total-Gam 0.00E+00 H3SW <-8.9E+01 0.00E+00 2.07E+02 Sample ID: 461916 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.73E+00 0.00E+00 5.73E+00 Co-58 <5.53E+00 0.00E+00 5.53E+00 Fe-59 <1.05E+01 0.00E+00 1.05E+01 Co-60 <7.02E+00 0.00E+00 7.02E+00 Zn-65 <1.04E+01 0.00E+00 1.04E+01 Zr-95 <9.93E+00 0.00E+00 9.93E+00 Nb-95 <5.74E+00 0.00E+00 5.74E+00 I-131 <5.77E+00 0.00E+00 5.77E+00 Cs-134 <7.61E+00 0.00E+00 7.61E+00 Cs-137 <6.77E+00 0.00E+00 6.77E+00 BaLa-140 <8.87E+00 0.00E+00 8.87E+00 Total-Gam 0.00E+00 H3SW <3.97E+01 0.00E+00 1.78E+02 Sample ID: 464233 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <4.72E+00 0.00E+00 4.72E+00 Co-58 <4.14E+00 0.00E+00 4.14E+00 Fe-59 <9.61E+00 0.00E+00 9.61E+00 Co-60 <5.27E+00 0.00E+00 5.27E+00 Zn-65 <1.19E+01 0.00E+00 1.19E+01 Zr-95 <9.97E+00 0.00E+00 9.97E+00 Nb-95 <5.21E+00 0.00E+00 5.21E+00 I-131 <8.72E+00 0.00E+00 8.72E+00 Cs-134 <6.17E+00 0.00E+00 6.17E+00 Cs-137 <6.59E+00 0.00E+00 6.59E+00 BaLa-140 <7.44E+00 0.00E+00 7.44E+00 Total-Gam 0.00E+00 H3SW <-9.9E+01 0.00E+00 1.88E+02 Sample Point 498 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432854 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.43E+01 0.00E+00 2.52E+02 Sample ID: 433256 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.67E+01 0.00E+00 2.51E+02 Sample ID: 433673 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.2E+00 0.00E+00 2.33E+02 Sample ID: 434408 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.18E+02 0.00E+00 2.38E+02 Sample ID: 434399 Sample Dates: 1/4/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.23E+00 0.00E+00 8.23E+00 Co-58 <9.38E+00 0.00E+00 9.38E+00 Fe-59 <1.83E+01 0.00E+00 1.83E+01 Co-60 <8.46E+00 0.00E+00 8.46E+00 Zn-65 <1.20E+01 0.00E+00 1.20E+01 Zr-95 <1.63E+01 0.00E+00 1.63E+01 Nb-95 <1.12E+01 0.00E+00 1.12E+01 I-131 <3.93E+01 0.00E+00 3.93E+01 Cs-134 <6.93E+00 0.00E+00 6.93E+00 Cs-137 <6.87E+00 0.00E+00 6.87E+00 La-140 <3.54E+04 0.00E+00 3.54E+04 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 93 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 498 Sample Point 498 [ INDICATOR - -- @ 0 miles ]

Sample ID: 434399 Sample Dates: 1/4/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Ba-140 <7.35E+01 0.00E+00 7.35E+01 Total-Gam 0.00E+00 Sample ID: 435052 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.1E+02 0.00E+00 2.60E+02 Sample ID: 435762 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.89E+00 0.00E+00 2.42E+02 Sample ID: 436212 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.61E+02 0.00E+00 2.28E+02 Sample ID: 436663 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.53E+02 Sample ID: 436654 Sample Dates: 2/8/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.00E+01 0.00E+00 1.00E+01 Co-58 <1.09E+01 0.00E+00 1.09E+01 Fe-59 <1.60E+01 0.00E+00 1.60E+01 Co-60 <7.89E+00 0.00E+00 7.89E+00 Zn-65 <1.48E+01 0.00E+00 1.48E+01 Zr-95 <1.44E+01 0.00E+00 1.44E+01 Nb-95 <8.89E+00 0.00E+00 8.89E+00 I-131 <1.95E+01 0.00E+00 1.95E+01 Cs-134 <8.35E+00 0.00E+00 8.35E+00 Cs-137 <7.93E+00 0.00E+00 7.93E+00 La-140 <5.37E+02 0.00E+00 5.37E+02 Ba-140 <4.80E+01 0.00E+00 4.80E+01 Total-Gam 0.00E+00 Sample ID: 437524 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <3.78E+01 0.00E+00 2.54E+02 Sample ID: 438254 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <3.46E+00 0.00E+00 2.35E+02 Sample ID: 438757 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.0E+02 0.00E+00 2.40E+02 Sample ID: 439100 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+02 0.00E+00 2.45E+02 Sample ID: 439456 Sample Dates: 3/7/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.53E+00 0.00E+00 7.53E+00 Co-58 <9.76E+00 0.00E+00 9.77E+00 Fe-59 <1.95E+01 0.00E+00 1.95E+01 Co-60 <6.67E+00 0.00E+00 6.67E+00 Zn-65 <1.96E+01 0.00E+00 1.96E+01 Zr-95 <1.68E+01 0.00E+00 1.68E+01 Nb-95 <7.93E+00 0.00E+00 7.93E+00 I-131 <1.88E+01 0.00E+00 1.88E+01 Cs-134 <6.68E+00 0.00E+00 6.68E+00 Cs-137 <7.68E+00 0.00E+00 7.68E+00 La-140 <1.16E+03 0.00E+00 1.16E+03 Ba-140 <5.23E+01 0.00E+00 5.23E+01 Total-Gam 0.00E+00 Sample ID: 439953 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-9.6E+01 0.00E+00 2.55E+02 Sample ID: 440525 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.71E+01 0.00E+00 2.31E+02 Sample ID: 441365 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.41E+01 0.00E+00 2.24E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 94 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 498 Sample Point 498 [ INDICATOR - -- @ 0 miles ]

Sample ID: 441776 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.45E+01 0.00E+00 2.38E+02 Sample ID: 442209 Sample Dates: 4/4/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.90E+00 0.00E+00 7.90E+00 Co-58 <8.47E+00 0.00E+00 8.47E+00 Fe-59 <1.75E+01 0.00E+00 1.75E+01 Co-60 <7.14E+00 0.00E+00 7.14E+00 Zn-65 <1.76E+01 0.00E+00 1.76E+01 Zr-95 <1.72E+01 0.00E+00 1.72E+01 Nb-95 <9.49E+00 0.00E+00 9.49E+00 I-131 <3.36E+01 0.00E+00 3.36E+01 Cs-134 <8.14E+00 0.00E+00 8.14E+00 Cs-137 <6.58E+00 0.00E+00 6.58E+00 La-140 <8.04E+03 0.00E+00 8.04E+03 Ba-140 <5.73E+01 0.00E+00 5.73E+01 Total-Gam 0.00E+00 Sample ID: 442223 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.31E+02 0.00E+00 2.53E+02 Sample ID: 442814 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.60E+02 0.00E+00 2.46E+02 Sample ID: 443252 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.99E+01 0.00E+00 2.57E+02 Sample ID: 443810 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-9.6E+00 0.00E+00 2.44E+02 Sample ID: 444204 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.4E+02 0.00E+00 2.42E+02 Sample ID: 444195 Sample Dates: 5/2/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.74E+00 0.00E+00 6.74E+00 Co-58 <1.07E+01 0.00E+00 1.07E+01 Fe-59 <1.76E+01 0.00E+00 1.76E+01 Co-60 <7.92E+00 0.00E+00 7.91E+00 Zn-65 <2.09E+01 0.00E+00 2.09E+01 Zr-95 <1.76E+01 0.00E+00 1.76E+01 Nb-95 <1.22E+01 0.00E+00 1.22E+01 I-131 <4.75E+01 0.00E+00 4.75E+01 Cs-134 <7.12E+00 0.00E+00 7.12E+00 Cs-137 <7.93E+00 0.00E+00 7.93E+00 La-140 <5.50E+04 0.00E+00 5.50E+04 Ba-140 <6.62E+01 0.00E+00 6.62E+01 Total-Gam 0.00E+00 Sample ID: 445274 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.3E+01 0.00E+00 2.32E+02 Sample ID: 446273 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-6.9E+01 0.00E+00 2.49E+02 Sample ID: 446777 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.2E+02 0.00E+00 2.43E+02 Sample ID: 447103 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.02E+01 0.00E+00 2.26E+02 Sample ID: 447420 Sample Dates: 6/6/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.11E+00 0.00E+00 8.11E+00 Co-58 <6.79E+00 0.00E+00 6.79E+00 Fe-59 <1.73E+01 0.00E+00 1.73E+01 Co-60 <6.67E+00 0.00E+00 6.67E+00 Zn-65 <1.97E+01 0.00E+00 1.97E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 95 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 498 Sample Point 498 [ INDICATOR - -- @ 0 miles ]

Sample ID: 447420 Sample Dates: 6/6/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Zr-95 <1.29E+01 0.00E+00 1.29E+01 Nb-95 <6.46E+00 0.00E+00 6.46E+00 I-131 <2.20E+01 0.00E+00 2.20E+01 Cs-134 <7.78E+00 0.00E+00 7.78E+00 Cs-137 <7.68E+00 0.00E+00 7.68E+00 La-140 <1.37E+03 0.00E+00 1.37E+03 Ba-140 <5.31E+01 0.00E+00 5.31E+01 Total-Gam 0.00E+00 Sample ID: 447756 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-7.9E+01 0.00E+00 2.34E+02 Sample ID: 448220 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.44E+02 0.00E+00 2.22E+02 Sample ID: 448846 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.92E+01 0.00E+00 2.21E+02 Sample ID: 449159 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.76E+02 0.00E+00 2.29E+02 Sample ID: 449885 Sample Dates: 7/5/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.70E+00 0.00E+00 8.70E+00 Co-58 <8.11E+00 0.00E+00 8.11E+00 Fe-59 <1.74E+01 0.00E+00 1.74E+01 Co-60 <7.32E+00 0.00E+00 7.31E+00 Zn-65 <1.41E+01 0.00E+00 1.41E+01 Zr-95 <1.51E+01 0.00E+00 1.51E+01 Nb-95 <1.11E+01 0.00E+00 1.11E+01 I-131 <3.18E+01 0.00E+00 3.18E+01 Cs-134 <7.97E+00 0.00E+00 7.97E+00 Cs-137 <8.18E+00 0.00E+00 8.18E+00 La-140 <6.98E+03 0.00E+00 6.98E+03 Ba-140 <5.46E+01 0.00E+00 5.46E+01 Total-Gam 0.00E+00 Sample ID: 449896 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.06E+02 0.00E+00 2.21E+02 Sample ID: 450565 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.16E+00 0.00E+00 8.16E+00 Co-58 <8.80E+00 0.00E+00 8.80E+00 Fe-59 <1.02E+01 0.00E+00 1.02E+01 Co-60 <5.94E+00 0.00E+00 5.94E+00 Zn-65 <1.61E+01 0.00E+00 1.61E+01 Zr-95 <1.51E+01 0.00E+00 1.51E+01 Nb-95 <8.68E+00 0.00E+00 8.67E+00 I-131 <7.01E+00 0.00E+00 7.01E+00 Cs-134 <6.62E+00 0.00E+00 6.62E+00 Cs-137 <8.86E+00 0.00E+00 8.86E+00 La-140 <1.45E+01 0.00E+00 1.45E+01 Ba-140 <3.01E+01 0.00E+00 3.01E+01 Total-Gam 0.00E+00 H3SW <1.13E+02 0.00E+00 2.35E+02 Sample ID: 451605 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.96E+00 0.00E+00 7.96E+00 Co-58 <8.58E+00 0.00E+00 8.58E+00 Fe-59 <1.66E+01 0.00E+00 1.66E+01 Co-60 <9.69E+00 0.00E+00 9.69E+00 Zn-65 <1.03E+01 0.00E+00 1.03E+01 Zr-95 <1.28E+01 0.00E+00 1.28E+01 Nb-95 <9.22E+00 0.00E+00 9.23E+00 I-131 <1.00E+01 0.00E+00 1.00E+01 Cs-134 <7.02E+00 0.00E+00 7.01E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 96 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 498 Sample Point 498 [ INDICATOR - -- @ 0 miles ]

Sample ID: 451605 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <6.59E+01 0.00E+00 6.59E+01 Ba-140 <3.49E+01 0.00E+00 3.49E+01 Total-Gam 0.00E+00 H3SW <-2.6E+01 0.00E+00 2.36E+02 Sample ID: 461269 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.05E+00 0.00E+00 5.05E+00 Co-58 <6.15E+00 0.00E+00 6.15E+00 Fe-59 <8.53E+00 0.00E+00 8.53E+00 Co-60 <6.21E+00 0.00E+00 6.21E+00 Zn-65 <1.15E+01 0.00E+00 1.15E+01 Zr-95 <1.04E+01 0.00E+00 1.04E+01 Nb-95 <5.28E+00 0.00E+00 5.28E+00 I-131 <4.67E+00 0.00E+00 4.67E+00 Cs-134 <6.35E+00 0.00E+00 6.35E+00 Cs-137 <5.52E+00 0.00E+00 5.52E+00 BaLa-140 <5.86E+00 0.00E+00 5.86E+00 Total-Gam 0.00E+00 H3SW <-9.1E+01 0.00E+00 2.06E+02 Sample ID: 461917 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.71E+00 0.00E+00 5.71E+00 Co-58 <6.09E+00 0.00E+00 6.09E+00 Fe-59 <7.32E+00 0.00E+00 7.32E+00 Co-60 <6.82E+00 0.00E+00 6.82E+00 Zn-65 <1.14E+01 0.00E+00 1.14E+01 Zr-95 <1.08E+01 0.00E+00 1.08E+01 Nb-95 <6.46E+00 0.00E+00 6.46E+00 I-131 <5.26E+00 0.00E+00 5.26E+00 Cs-134 <6.19E+00 0.00E+00 6.19E+00 Cs-137 <6.51E+00 0.00E+00 6.51E+00 BaLa-140 <7.50E+00 0.00E+00 7.50E+00 Total-Gam 0.00E+00 H3SW <-2.1E+01 0.00E+00 1.79E+02 Sample ID: 464234 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.83E+00 0.00E+00 5.83E+00 Co-58 <6.69E+00 0.00E+00 6.69E+00 Fe-59 <1.22E+01 0.00E+00 1.22E+01 Co-60 <5.97E+00 0.00E+00 5.97E+00 Zn-65 <9.96E+00 0.00E+00 9.96E+00 Zr-95 <1.19E+01 0.00E+00 1.19E+01 Nb-95 <6.16E+00 0.00E+00 6.16E+00 I-131 <8.97E+00 0.00E+00 8.97E+00 Cs-134 <6.70E+00 0.00E+00 6.70E+00 Cs-137 <6.11E+00 0.00E+00 6.11E+00 BaLa-140 <9.01E+00 0.00E+00 9.01E+00 Total-Gam 0.00E+00 H3SW <-8.0E+01 0.00E+00 1.88E+02 Sample Point 499 [ CONTROL - -- @ 0 miles ]

Sample ID: 432855 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.31E+01 0.00E+00 2.41E+02 Sample ID: 433257 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-9.6E+00 0.00E+00 2.51E+02 Sample ID: 433674 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.12E+02 0.00E+00 2.33E+02 Sample ID: 434409 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.4E+01 0.00E+00 2.39E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 97 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 499 Sample Point 499 [ CONTROL - -- @ 0 miles ]

Sample ID: 434400 Sample Dates: 1/4/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <9.03E+00 0.00E+00 9.03E+00 Co-58 <9.45E+00 0.00E+00 9.45E+00 Fe-59 <1.51E+01 0.00E+00 1.51E+01 Co-60 <9.92E+00 0.00E+00 9.92E+00 Zn-65 <2.08E+01 0.00E+00 2.08E+01 Zr-95 <1.79E+01 0.00E+00 1.79E+01 Nb-95 <9.42E+00 0.00E+00 9.42E+00 I-131 <4.12E+01 0.00E+00 4.12E+01 Cs-134 <7.30E+00 0.00E+00 7.31E+00 Cs-137 <6.58E+00 0.00E+00 6.58E+00 La-140 <3.59E+04 0.00E+00 3.59E+04 Ba-140 <7.84E+01 0.00E+00 7.84E+01 Total-Gam 0.00E+00 Sample ID: 435053 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.2E+01 0.00E+00 2.60E+02 Sample ID: 435763 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.58E+01 0.00E+00 2.42E+02 Sample ID: 436213 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.08E+02 0.00E+00 2.36E+02 Sample ID: 436664 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.3E+02 0.00E+00 2.54E+02 Sample ID: 436655 Sample Dates: 2/8/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <9.35E+00 0.00E+00 9.35E+00 Co-58 <7.78E+00 0.00E+00 7.78E+00 Fe-59 <1.53E+01 0.00E+00 1.53E+01 Co-60 <5.96E+00 0.00E+00 5.96E+00 Zn-65 <2.16E+01 0.00E+00 2.16E+01 Zr-95 <1.28E+01 0.00E+00 1.28E+01 Nb-95 <9.32E+00 0.00E+00 9.32E+00 I-131 <1.83E+01 0.00E+00 1.83E+01 Cs-134 <7.43E+00 0.00E+00 7.43E+00 Cs-137 <6.58E+00 0.00E+00 6.57E+00 La-140 <9.93E+02 0.00E+00 9.93E+02 Ba-140 <4.73E+01 0.00E+00 4.73E+01 Total-Gam 0.00E+00 Sample ID: 437525 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+01 0.00E+00 2.55E+02 Sample ID: 438255 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.2E+02 0.00E+00 2.33E+02 Sample ID: 438758 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.9E+02 0.00E+00 2.41E+02 Sample ID: 439101 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.6E+02 0.00E+00 2.45E+02 Sample ID: 439457 Sample Dates: 3/7/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <9.20E+00 0.00E+00 9.20E+00 Co-58 <8.14E+00 0.00E+00 8.13E+00 Fe-59 <1.64E+01 0.00E+00 1.64E+01 Co-60 <8.45E+00 0.00E+00 8.45E+00 Zn-65 <1.92E+01 0.00E+00 1.92E+01 Zr-95 <1.41E+01 0.00E+00 1.41E+01 Nb-95 <1.29E+01 0.00E+00 1.29E+01 I-131 <3.35E+01 0.00E+00 3.35E+01 Cs-134 <8.61E+00 0.00E+00 8.61E+00 Cs-137 <8.18E+00 0.00E+00 8.18E+00 La-140 <9.10E+03 0.00E+00 9.10E+03 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 98 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 499 Sample Point 499 [ CONTROL - -- @ 0 miles ]

Sample ID: 439457 Sample Dates: 3/7/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Ba-140 <7.07E+01 0.00E+00 7.07E+01 Total-Gam 0.00E+00 Sample ID: 439954 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.0E+02 0.00E+00 2.55E+02 Sample ID: 440526 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.2E+02 0.00E+00 2.31E+02 Sample ID: 441366 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.31E+01 0.00E+00 2.23E+02 Sample ID: 441777 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.87E+00 0.00E+00 2.39E+02 Sample ID: 442210 Sample Dates: 4/4/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <7.00E+00 0.00E+00 7.00E+00 Co-58 <5.76E+00 0.00E+00 5.76E+00 Fe-59 <1.75E+01 0.00E+00 1.75E+01 Co-60 <6.68E+00 0.00E+00 6.68E+00 Zn-65 <1.76E+01 0.00E+00 1.76E+01 Zr-95 <1.35E+01 0.00E+00 1.35E+01 Nb-95 <1.02E+01 0.00E+00 1.02E+01 I-131 <3.12E+01 0.00E+00 3.12E+01 Cs-134 <7.46E+00 0.00E+00 7.46E+00 Cs-137 <8.41E+00 0.00E+00 8.41E+00 La-140 <8.28E+03 0.00E+00 8.28E+03 Ba-140 <6.98E+01 0.00E+00 6.98E+01 Total-Gam 0.00E+00 Sample ID: 442224 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <9.64E+01 0.00E+00 2.50E+02 Sample ID: 442815 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.10E+02 0.00E+00 2.31E+02 Sample ID: 443253 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.31E+01 0.00E+00 2.57E+02 Sample ID: 443811 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.77E+01 0.00E+00 2.44E+02 Sample ID: 444205 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.24E+02 0.00E+00 2.47E+02 Sample ID: 444196 Sample Dates: 5/2/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <9.30E+00 0.00E+00 9.30E+00 Co-58 <8.86E+00 0.00E+00 8.86E+00 Fe-59 <1.65E+01 0.00E+00 1.65E+01 Co-60 <7.33E+00 0.00E+00 7.33E+00 Zn-65 <1.62E+01 0.00E+00 1.62E+01 Zr-95 <1.88E+01 0.00E+00 1.88E+01 Nb-95 <1.32E+01 0.00E+00 1.32E+01 I-131 <4.81E+01 0.00E+00 4.81E+01 Cs-134 <8.01E+00 0.00E+00 8.01E+00 Cs-137 <8.18E+00 0.00E+00 8.18E+00 La-140 <7.28E+04 0.00E+00 7.28E+04 Ba-140 <8.92E+01 0.00E+00 8.92E+01 Total-Gam 0.00E+00 Sample ID: 445275 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.69E+01 0.00E+00 2.08E+02 Sample ID: 446274 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.0E+02 0.00E+00 2.48E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 99 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 499 Sample Point 499 [ CONTROL - -- @ 0 miles ]

Sample ID: 446778 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.9E+02 0.00E+00 2.43E+02 Sample ID: 447104 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.93E+01 0.00E+00 2.26E+02 Sample ID: 447421 Sample Dates: 6/6/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.63E+00 0.00E+00 8.63E+00 Co-58 <7.51E+00 0.00E+00 7.51E+00 Fe-59 <1.65E+01 0.00E+00 1.65E+01 Co-60 <8.44E+00 0.00E+00 8.44E+00 Zn-65 <1.18E+01 0.00E+00 1.18E+01 Zr-95 <1.58E+01 0.00E+00 1.58E+01 Nb-95 <9.47E+00 0.00E+00 9.47E+00 I-131 <2.40E+01 0.00E+00 2.40E+01 Cs-134 <7.43E+00 0.00E+00 7.43E+00 Cs-137 <8.64E+00 0.00E+00 8.64E+00 La-140 <1.97E+03 0.00E+00 1.97E+03 Ba-140 <6.21E+01 0.00E+00 6.21E+01 Total-Gam 0.00E+00 Sample ID: 447757 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.8E+01 0.00E+00 2.33E+02 Sample ID: 448221 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.70E+02 0.00E+00 2.21E+02 Sample ID: 448847 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.55E+01 0.00E+00 2.42E+02 Sample ID: 449160 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.85E+02 0.00E+00 2.28E+02 Sample ID: 449886 Sample Dates: 7/5/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.17E+00 0.00E+00 8.17E+00 Co-58 <8.45E+00 0.00E+00 8.45E+00 Fe-59 <1.16E+01 0.00E+00 1.16E+01 Co-60 <8.96E+00 0.00E+00 8.96E+00 Zn-65 <1.99E+01 0.00E+00 1.99E+01 Zr-95 <1.90E+01 0.00E+00 1.90E+01 Nb-95 <1.17E+01 0.00E+00 1.17E+01 I-131 <3.24E+01 0.00E+00 3.24E+01 Cs-134 <7.72E+00 0.00E+00 7.72E+00 Cs-137 <8.64E+00 0.00E+00 8.64E+00 La-140 <4.10E+03 0.00E+00 4.10E+03 Ba-140 <6.70E+01 0.00E+00 6.70E+01 Total-Gam 0.00E+00 Sample ID: 449897 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.46E+02 0.00E+00 2.31E+02 Sample ID: 450566 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.77E+00 0.00E+00 6.77E+00 Co-58 <8.81E+00 0.00E+00 8.81E+00 Fe-59 <1.12E+01 0.00E+00 1.12E+01 Co-60 <7.10E+00 0.00E+00 7.10E+00 Zn-65 <1.91E+01 0.00E+00 1.91E+01 Zr-95 <1.38E+01 0.00E+00 1.38E+01 Nb-95 <7.53E+00 0.00E+00 7.53E+00 I-131 <7.77E+00 0.00E+00 7.77E+00 Cs-134 <7.95E+00 0.00E+00 7.95E+00 Cs-137 <8.86E+00 0.00E+00 8.86E+00 La-140 <1.00E+01 0.00E+00 1.00E+01 Ba-140 <3.09E+01 0.00E+00 3.09E+01 Total-Gam 0.00E+00 H3SW <1.56E+02 0.00E+00 2.34E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 100 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 499 Sample Point 499 [ CONTROL - -- @ 0 miles ]

Sample ID: 451606 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.47E+00 0.00E+00 8.47E+00 Co-58 <8.07E+00 0.00E+00 8.07E+00 Fe-59 <1.08E+01 0.00E+00 1.08E+01 Co-60 <7.11E+00 0.00E+00 7.11E+00 Zn-65 <1.78E+01 0.00E+00 1.78E+01 Zr-95 <1.33E+01 0.00E+00 1.33E+01 Nb-95 <9.46E+00 0.00E+00 9.46E+00 I-131 <9.92E+00 0.00E+00 9.92E+00 Cs-134 <7.02E+00 0.00E+00 7.02E+00 Cs-137 <7.67E+00 0.00E+00 7.67E+00 La-140 <6.10E+01 0.00E+00 6.10E+01 Ba-140 <3.19E+01 0.00E+00 3.19E+01 Total-Gam 0.00E+00 H3SW <6.64E+01 0.00E+00 2.36E+02 Sample ID: 461270 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <3.63E+00 0.00E+00 3.63E+00 Co-58 <3.00E+00 0.00E+00 3.00E+00 Fe-59 <6.34E+00 0.00E+00 6.34E+00 Co-60 <4.15E+00 0.00E+00 4.15E+00 Zn-65 <8.71E+00 0.00E+00 8.71E+00 Zr-95 <6.05E+00 0.00E+00 6.05E+00 Nb-95 <3.39E+00 0.00E+00 3.39E+00 I-131 <3.78E+00 0.00E+00 3.78E+00 Cs-134 <3.76E+00 0.00E+00 3.76E+00 Cs-137 <3.70E+00 0.00E+00 3.70E+00 BaLa-140 <3.86E+00 0.00E+00 3.86E+00 Total-Gam 0.00E+00 H3SW <-1.4E+02 0.00E+00 2.01E+02 Sample ID: 461918 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <4.68E+00 0.00E+00 4.68E+00 Co-58 <5.46E+00 0.00E+00 5.46E+00 Fe-59 <1.10E+01 0.00E+00 1.10E+01 Co-60 <6.04E+00 0.00E+00 6.04E+00 Zn-65 <1.12E+01 0.00E+00 1.12E+01 Zr-95 <9.48E+00 0.00E+00 9.48E+00 Nb-95 <5.64E+00 0.00E+00 5.64E+00 I-131 <4.18E+00 0.00E+00 4.18E+00 Cs-134 <5.26E+00 0.00E+00 5.26E+00 Cs-137 <5.70E+00 0.00E+00 5.70E+00 BaLa-140 <6.99E+00 0.00E+00 6.99E+00 Total-Gam 0.00E+00 H3SW <-3.5E+01 0.00E+00 1.79E+02 Sample ID: 464235 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.80E+00 0.00E+00 5.80E+00 Co-58 <5.58E+00 0.00E+00 5.58E+00 Fe-59 <1.39E+01 0.00E+00 1.39E+01 Co-60 <6.69E+00 0.00E+00 6.69E+00 Zn-65 <1.06E+01 0.00E+00 1.06E+01 Zr-95 <9.74E+00 0.00E+00 9.74E+00 Nb-95 <6.51E+00 0.00E+00 6.51E+00 I-131 <9.54E+00 0.00E+00 9.54E+00 Cs-134 <5.79E+00 0.00E+00 5.79E+00 Cs-137 <4.80E+00 0.00E+00 4.80E+00 BaLa-140 <1.15E+01 0.00E+00 1.15E+01 Total-Gam 0.00E+00 H3SW <-1.3E+02 0.00E+00 1.88E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 101 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 604 Sample Point 604 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432856 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.75E+00 0.00E+00 2.55E+02 Sample ID: 433258 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.0E+03 0.00E+00 3.10E+02 Sample ID: 433675 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW 3.78E+02 1.54E+02 2.50E+02 Sample ID: 434410 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW 8.45E+02 1.60E+02 2.44E+02 Sample ID: 435054 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.2E+00 0.00E+00 2.53E+02 Sample ID: 435764 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW 5.60E+03 2.22E+02 2.31E+02 Sample ID: 436214 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW 6.01E+02 1.56E+02 2.45E+02 Sample ID: 436665 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.98E+01 0.00E+00 2.45E+02 Sample ID: 437526 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <3.64E+01 0.00E+00 2.43E+02 Sample ID: 438256 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW 2.01E+03 1.72E+02 2.33E+02 Sample ID: 438759 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-7.5E+03 0.00E+00 5.64E+02 Sample ID: 439102 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW 9.53E+02 1.65E+02 2.50E+02 Sample ID: 439955 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.02E+01 0.00E+00 2.57E+02 Sample ID: 440527 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW 8.34E+02 1.51E+02 2.30E+02 Sample ID: 441367 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW 1.04E+03 1.53E+02 2.27E+02 Sample ID: 441778 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW 3.45E+02 1.46E+02 2.37E+02 Sample ID: 442225 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW 1.17E+03 1.59E+02 2.34E+02 Sample ID: 442816 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.04E+02 0.00E+00 2.42E+02 Sample ID: 443254 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.65E+01 0.00E+00 2.41E+02 Sample ID: 443812 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW 5.61E+02 1.48E+02 2.33E+02 Sample ID: 444206 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.27E+02 0.00E+00 2.48E+02 Sample ID: 445276 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.81E+02 0.00E+00 2.31E+02 Sample ID: 446275 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.58E+01 0.00E+00 2.32E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 102 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 604 Sample Point 604 [ INDICATOR - -- @ 0 miles ]

Sample ID: 446779 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW 4.43E+02 1.50E+02 2.42E+02 Sample ID: 447105 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW 2.60E+02 1.47E+02 2.42E+02 Sample ID: 447758 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.47E+01 0.00E+00 2.27E+02 Sample ID: 448222 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW 2.88E+02 1.39E+02 2.28E+02 Sample ID: 448848 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW 3.34E+02 1.42E+02 2.31E+02 Sample ID: 449161 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW 3.95E+02 1.49E+02 2.41E+02 Sample ID: 449898 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW 5.14E+02 1.40E+02 2.22E+02 Sample ID: 450567 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.84E+01 0.00E+00 1.84E+01 Co-58 <1.22E+01 0.00E+00 1.22E+01 Fe-59 <3.69E+01 0.00E+00 3.69E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <3.06E+01 0.00E+00 3.06E+01 Zr-95 <1.47E+01 0.00E+00 1.47E+01 Nb-95 <1.68E+01 0.00E+00 1.68E+01 I-131 <1.90E+01 0.00E+00 1.90E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.88E+01 0.00E+00 1.88E+01 La-140 <2.54E+01 0.00E+00 2.54E+01 Ba-140 <5.73E+01 0.00E+00 5.73E+01 Total-Gam 0.00E+00 H3SW <5.10E+01 0.00E+00 2.58E+02 Sample ID: 451607 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.07E+01 0.00E+00 1.07E+01 Co-58 <1.54E+01 0.00E+00 1.54E+01 Fe-59 <2.53E+01 0.00E+00 2.53E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <2.18E+01 0.00E+00 2.18E+01 Zr-95 <2.64E+01 0.00E+00 2.64E+01 Nb-95 <1.67E+01 0.00E+00 1.67E+01 I-131 <1.46E+01 0.00E+00 1.46E+01 Cs-134 <9.66E+00 0.00E+00 9.66E+00 Cs-137 <1.57E+01 0.00E+00 1.57E+01 La-140 <2.23E+02 0.00E+00 2.23E+02 Ba-140 <6.74E+01 0.00E+00 6.74E+01 Total-Gam 0.00E+00 H3SW <2.05E+01 0.00E+00 2.38E+02 Sample ID: 461271 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.57E+00 0.00E+00 6.57E+00 Co-58 <6.02E+00 0.00E+00 6.02E+00 Fe-59 <8.84E+00 0.00E+00 8.84E+00 Co-60 <7.15E+00 0.00E+00 7.15E+00 Zn-65 <1.60E+01 0.00E+00 1.60E+01 Zr-95 <1.05E+01 0.00E+00 1.05E+01 Nb-95 <6.02E+00 0.00E+00 6.02E+00 I-131 <5.83E+00 0.00E+00 5.83E+00 Cs-134 <5.88E+00 0.00E+00 5.88E+00 Cs-137 <7.21E+00 0.00E+00 7.21E+00 BaLa-140 <8.98E+00 0.00E+00 8.98E+00 Total-Gam 0.00E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 103 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 604 Sample Point 604 [ INDICATOR - -- @ 0 miles ]

Sample ID: 461271 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW 2.88E+02 1.28E+02 2.05E+02 Sample ID: 461919 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.46E+00 0.00E+00 5.46E+00 Co-58 <5.99E+00 0.00E+00 5.99E+00 Fe-59 <1.09E+01 0.00E+00 1.09E+01 Co-60 <4.45E+00 0.00E+00 4.45E+00 Zn-65 <1.55E+01 0.00E+00 1.55E+01 Zr-95 <8.75E+00 0.00E+00 8.75E+00 Nb-95 <5.83E+00 0.00E+00 5.83E+00 I-131 <4.98E+00 0.00E+00 4.98E+00 Cs-134 <6.13E+00 0.00E+00 6.13E+00 Cs-137 <4.72E+00 0.00E+00 4.72E+00 BaLa-140 <6.59E+00 0.00E+00 6.59E+00 Total-Gam 0.00E+00 H3SW <1.10E+02 0.00E+00 1.78E+02 Sample ID: 464236 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.31E+00 0.00E+00 5.31E+00 Co-58 <5.28E+00 0.00E+00 5.28E+00 Fe-59 <1.27E+01 0.00E+00 1.27E+01 Co-60 <6.22E+00 0.00E+00 6.22E+00 Zn-65 <1.53E+01 0.00E+00 1.53E+01 Zr-95 <9.95E+00 0.00E+00 9.95E+00 Nb-95 <6.40E+00 0.00E+00 6.40E+00 I-131 <9.25E+00 0.00E+00 9.25E+00 Cs-134 <5.94E+00 0.00E+00 5.94E+00 Cs-137 <5.70E+00 0.00E+00 5.70E+00 BaLa-140 <1.00E+01 0.00E+00 1.00E+01 Total-Gam 0.00E+00 H3SW <8.03E+01 0.00E+00 1.88E+02 Sample Point 605 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432857 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.32E+02 0.00E+00 2.42E+02 Sample ID: 433259 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.53E+02 0.00E+00 2.46E+02 Sample ID: 433676 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.36E+02 0.00E+00 2.33E+02 Sample ID: 434411 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.13E+02 0.00E+00 2.46E+02 Sample ID: 435055 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.2E+01 0.00E+00 2.59E+02 Sample ID: 435765 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW 9.60E+02 1.59E+02 2.41E+02 Sample ID: 436215 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.65E+02 0.00E+00 2.36E+02 Sample ID: 436666 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.93E+02 0.00E+00 2.41E+02 Sample ID: 437527 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.4E+01 0.00E+00 2.56E+02 Sample ID: 438257 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-6.9E+00 0.00E+00 2.34E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 104 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 605 Sample Point 605 [ INDICATOR - -- @ 0 miles ]

Sample ID: 438760 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.56E+02 Sample ID: 439103 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.8E+02 0.00E+00 2.45E+02 Sample ID: 439956 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.2E+02 0.00E+00 2.40E+02 Sample ID: 440528 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.60E+01 0.00E+00 2.49E+02 Sample ID: 441368 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <9.53E+01 0.00E+00 2.24E+02 Sample ID: 441779 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.10E+01 0.00E+00 2.55E+02 Sample ID: 442226 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.24E+01 0.00E+00 2.54E+02 Sample ID: 442817 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.13E+02 0.00E+00 2.31E+02 Sample ID: 443255 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <9.41E+01 0.00E+00 2.41E+02 Sample ID: 443813 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+02 0.00E+00 2.44E+02 Sample ID: 444207 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.32E+02 0.00E+00 2.47E+02 Sample ID: 445277 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.0E+01 0.00E+00 2.31E+02 Sample ID: 446276 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.0E+02 0.00E+00 2.46E+02 Sample ID: 446780 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.4E+01 0.00E+00 2.50E+02 Sample ID: 447106 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.35E+02 0.00E+00 2.37E+02 Sample ID: 447759 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.8E+02 0.00E+00 2.51E+02 Sample ID: 448223 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.83E+00 0.00E+00 2.28E+02 Sample ID: 448849 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.8E+01 0.00E+00 2.42E+02 Sample ID: 449162 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.11E+02 0.00E+00 2.41E+02 Sample ID: 449899 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.97E+02 0.00E+00 2.27E+02 Sample Point 606 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432858 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-7.6E+01 0.00E+00 2.46E+02 Sample ID: 433260 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.03E+02 0.00E+00 2.46E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 105 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 606 Sample Point 606 [ INDICATOR - -- @ 0 miles ]

Sample ID: 433677 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.77E+02 0.00E+00 2.33E+02 Sample ID: 434412 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.31E+02 0.00E+00 2.48E+02 Sample ID: 435056 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.1E+01 0.00E+00 2.60E+02 Sample ID: 435766 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW 9.77E+02 1.59E+02 2.41E+02 Sample ID: 436216 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.33E+02 0.00E+00 2.37E+02 Sample ID: 436667 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.97E+02 0.00E+00 2.44E+02 Sample ID: 437528 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.01E+01 0.00E+00 2.56E+02 Sample ID: 438258 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.13E+01 0.00E+00 2.34E+02 Sample ID: 438761 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.0E+02 0.00E+00 2.55E+02 Sample ID: 439104 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.9E+02 0.00E+00 2.47E+02 Sample ID: 439957 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-9.0E+01 0.00E+00 2.41E+02 Sample ID: 440529 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-6.3E+01 0.00E+00 2.48E+02 Sample ID: 441369 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.38E+02 0.00E+00 2.24E+02 Sample ID: 441780 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <0.00E+00 0.00E+00 2.56E+02 Sample ID: 442227 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.01E+02 0.00E+00 2.28E+02 Sample ID: 442818 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.00E+02 0.00E+00 2.32E+02 Sample ID: 443256 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.56E+01 0.00E+00 2.40E+02 Sample ID: 443814 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.7E+02 0.00E+00 2.44E+02 Sample ID: 444208 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+02 0.00E+00 2.48E+02 Sample ID: 445278 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.55E+01 0.00E+00 2.31E+02 Sample ID: 446277 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.8E+02 0.00E+00 2.47E+02 Sample ID: 446781 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.9E+01 0.00E+00 2.50E+02 Sample ID: 447107 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.27E+02 0.00E+00 2.37E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 106 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 606 Sample Point 606 [ INDICATOR - -- @ 0 miles ]

Sample ID: 447760 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-9.5E+00 0.00E+00 2.50E+02 Sample ID: 448224 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.36E+01 0.00E+00 2.27E+02 Sample ID: 448850 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.09E+01 0.00E+00 2.43E+02 Sample ID: 449163 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.61E+01 0.00E+00 2.36E+02 Sample ID: 449900 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.88E+02 0.00E+00 2.31E+02 Sample Point 607 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432859 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.5E+01 0.00E+00 2.57E+02 Sample ID: 433261 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.13E+02 0.00E+00 2.47E+02 Sample ID: 433678 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.02E+02 0.00E+00 2.32E+02 Sample ID: 434413 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.45E+02 0.00E+00 2.48E+02 Sample ID: 435057 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.0E+01 0.00E+00 2.59E+02 Sample ID: 435767 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW 1.11E+03 1.56E+02 2.30E+02 Sample ID: 436217 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <9.79E+01 0.00E+00 2.36E+02 Sample ID: 436668 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.67E+02 0.00E+00 2.42E+02 Sample ID: 437529 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-6.5E+01 0.00E+00 2.56E+02 Sample ID: 438259 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.5E+01 0.00E+00 2.35E+02 Sample ID: 438762 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.55E+02 Sample ID: 439105 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.5E+02 0.00E+00 2.47E+02 Sample ID: 439958 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.8E+02 0.00E+00 2.42E+02 Sample ID: 440530 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+02 0.00E+00 2.47E+02 Sample ID: 441370 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.40E+02 0.00E+00 2.24E+02 Sample ID: 441781 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.9E+00 0.00E+00 2.55E+02 Sample ID: 442228 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.23E+02 0.00E+00 2.55E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 107 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 607 Sample Point 607 [ INDICATOR - -- @ 0 miles ]

Sample ID: 442819 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.97E+02 0.00E+00 2.46E+02 Sample ID: 443257 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.20E+01 0.00E+00 2.41E+02 Sample ID: 443815 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.7E+02 0.00E+00 2.44E+02 Sample ID: 444209 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.2E+01 0.00E+00 2.47E+02 Sample ID: 445279 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-6.9E+00 0.00E+00 2.30E+02 Sample ID: 446278 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.47E+02 Sample ID: 446782 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.8E+00 0.00E+00 2.50E+02 Sample ID: 447108 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.47E+01 0.00E+00 2.38E+02 Sample ID: 447761 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.90E+01 0.00E+00 2.51E+02 Sample ID: 448225 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.20E+01 0.00E+00 2.28E+02 Sample ID: 448851 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <3.40E+01 0.00E+00 2.42E+02 Sample ID: 449164 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.96E+01 0.00E+00 2.36E+02 Sample ID: 449901 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.28E+02 0.00E+00 2.38E+02 Sample ID: 450568 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <8.66E+00 0.00E+00 8.66E+00 Fe-59 <2.08E+01 0.00E+00 2.08E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <3.42E+01 0.00E+00 3.42E+01 Zr-95 <2.08E+01 0.00E+00 2.08E+01 Nb-95 <1.33E+01 0.00E+00 1.33E+01 I-131 <1.84E+01 0.00E+00 1.84E+01 Cs-134 <1.52E+01 0.00E+00 1.52E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <4.12E+01 0.00E+00 4.12E+01 Ba-140 <3.82E+01 0.00E+00 3.82E+01 Total-Gam 0.00E+00 H3SW <3.21E+01 0.00E+00 2.58E+02 Sample ID: 451608 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.63E+01 0.00E+00 1.63E+01 Co-58 <8.90E+00 0.00E+00 8.90E+00 Fe-59 <2.06E+01 0.00E+00 2.06E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <2.67E+01 0.00E+00 2.67E+01 Zr-95 <2.15E+01 0.00E+00 2.15E+01 Nb-95 <1.54E+01 0.00E+00 1.54E+01 I-131 <2.05E+01 0.00E+00 2.05E+01 Cs-134 <1.37E+01 0.00E+00 1.37E+01 Cs-137 <1.97E+01 0.00E+00 1.97E+01 La-140 <1.19E+02 0.00E+00 1.19E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 108 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 607 Sample Point 607 [ INDICATOR - -- @ 0 miles ]

Sample ID: 451608 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Ba-140 <6.32E+01 0.00E+00 6.32E+01 Total-Gam 0.00E+00 H3SW <1.15E+02 0.00E+00 2.40E+02 Sample ID: 461272 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.47E+00 0.00E+00 5.47E+00 Co-58 <6.00E+00 0.00E+00 6.00E+00 Fe-59 <7.80E+00 0.00E+00 7.80E+00 Co-60 <5.82E+00 0.00E+00 5.82E+00 Zn-65 <1.41E+01 0.00E+00 1.41E+01 Zr-95 <7.09E+00 0.00E+00 7.09E+00 Nb-95 <4.22E+00 0.00E+00 4.22E+00 I-131 <5.61E+00 0.00E+00 5.61E+00 Cs-134 <5.18E+00 0.00E+00 5.18E+00 Cs-137 <3.06E+00 0.00E+00 3.06E+00 BaLa-140 <6.52E+00 0.00E+00 6.52E+00 Total-Gam 0.00E+00 H3SW <-1.1E+02 0.00E+00 2.07E+02 Sample ID: 461920 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <4.84E+00 0.00E+00 4.84E+00 Co-58 <4.35E+00 0.00E+00 4.35E+00 Fe-59 <9.78E+00 0.00E+00 9.78E+00 Co-60 <5.82E+00 0.00E+00 5.82E+00 Zn-65 <1.02E+01 0.00E+00 1.02E+01 Zr-95 <7.99E+00 0.00E+00 7.99E+00 Nb-95 <4.91E+00 0.00E+00 4.91E+00 I-131 <5.24E+00 0.00E+00 5.24E+00 Cs-134 <6.15E+00 0.00E+00 6.15E+00 Cs-137 <5.73E+00 0.00E+00 5.73E+00 BaLa-140 <1.48E+00 0.00E+00 1.48E+00 Total-Gam 0.00E+00 H3SW <6.31E+01 0.00E+00 1.78E+02 Sample ID: 464237 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <4.08E+00 0.00E+00 4.08E+00 Co-58 <4.61E+00 0.00E+00 4.61E+00 Fe-59 <9.14E+00 0.00E+00 9.14E+00 Co-60 <3.58E+00 0.00E+00 3.58E+00 Zn-65 <8.97E+00 0.00E+00 8.97E+00 Zr-95 <7.39E+00 0.00E+00 7.39E+00 Nb-95 <5.11E+00 0.00E+00 5.11E+00 I-131 <6.58E+00 0.00E+00 6.58E+00 Cs-134 <5.13E+00 0.00E+00 5.13E+00 Cs-137 <3.82E+00 0.00E+00 3.82E+00 BaLa-140 <5.61E+00 0.00E+00 5.61E+00 Total-Gam 0.00E+00 H3SW <-8.7E+01 0.00E+00 1.88E+02 Sample Point 608 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432860 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-6.7E+01 0.00E+00 2.56E+02 Sample ID: 433262 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.2E+03 0.00E+00 3.08E+02 Sample ID: 433679 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.31E+02 0.00E+00 2.50E+02 Sample ID: 434414 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.34E+01 0.00E+00 2.45E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 109 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 608 Sample Point 608 [ INDICATOR - -- @ 0 miles ]

Sample ID: 435058 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.3E+02 0.00E+00 2.52E+02 Sample ID: 435768 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.03E+02 0.00E+00 2.30E+02 Sample ID: 436218 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.92E+02 0.00E+00 2.47E+02 Sample ID: 436669 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.07E+01 0.00E+00 2.44E+02 Sample ID: 437530 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.4E+02 0.00E+00 2.42E+02 Sample ID: 438260 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.1E+02 0.00E+00 2.35E+02 Sample ID: 438763 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-8.5E+03 0.00E+00 5.69E+02 Sample ID: 439106 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-6.7E+01 0.00E+00 2.51E+02 Sample ID: 439959 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.8E+02 0.00E+00 2.56E+02 Sample ID: 440531 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.44E+02 0.00E+00 2.29E+02 Sample ID: 441371 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.25E+01 0.00E+00 2.27E+02 Sample ID: 441782 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.87E+02 0.00E+00 2.36E+02 Sample ID: 442229 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW 3.31E+02 1.41E+02 2.30E+02 Sample ID: 442820 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-9.2E+01 0.00E+00 2.43E+02 Sample ID: 443258 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.04E+01 0.00E+00 2.42E+02 Sample ID: 443816 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.08E+01 0.00E+00 2.33E+02 Sample ID: 444210 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.1E+01 0.00E+00 2.46E+02 Sample ID: 445280 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.77E+01 0.00E+00 2.32E+02 Sample ID: 446279 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <9.88E+01 0.00E+00 2.33E+02 Sample ID: 446783 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.7E+02 0.00E+00 2.42E+02 Sample ID: 447109 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.77E+01 0.00E+00 2.42E+02 Sample ID: 447762 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.36E+01 0.00E+00 2.27E+02 Sample ID: 448226 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.19E+01 0.00E+00 2.28E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 110 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 608 Sample Point 608 [ INDICATOR - -- @ 0 miles ]

Sample ID: 448852 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.67E+02 0.00E+00 2.26E+02 Sample ID: 449165 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.04E+02 0.00E+00 2.43E+02 Sample ID: 449902 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.36E+02 0.00E+00 2.42E+02 Sample Point 609 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432861 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.3E+01 0.00E+00 2.56E+02 Sample ID: 433263 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.2E+03 0.00E+00 3.12E+02 Sample ID: 433680 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.78E+01 0.00E+00 2.51E+02 Sample ID: 434415 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.95E+02 0.00E+00 2.45E+02 Sample ID: 435059 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.9E+02 0.00E+00 2.53E+02 Sample ID: 435769 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.95E+02 0.00E+00 2.31E+02 Sample ID: 436219 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.93E+02 0.00E+00 2.47E+02 Sample ID: 436670 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+01 0.00E+00 2.45E+02 Sample ID: 437531 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.0E+02 0.00E+00 2.43E+02 Sample ID: 438261 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-9.3E+01 0.00E+00 2.33E+02 Sample ID: 438764 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-8.4E+03 0.00E+00 5.66E+02 Sample ID: 439107 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-7.7E+01 0.00E+00 2.52E+02 Sample ID: 439960 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.2E+02 0.00E+00 2.57E+02 Sample ID: 440532 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <8.12E+01 0.00E+00 2.28E+02 Sample ID: 441372 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.4E+01 0.00E+00 2.26E+02 Sample ID: 441783 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.43E+02 0.00E+00 2.37E+02 Sample ID: 442230 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW 2.92E+02 1.40E+02 2.30E+02 Sample ID: 442821 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.58E+01 0.00E+00 2.43E+02 Sample ID: 443259 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.87E+01 0.00E+00 2.41E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 111 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 609 Sample Point 609 [ INDICATOR - -- @ 0 miles ]

Sample ID: 443817 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.9E+01 0.00E+00 2.33E+02 Sample ID: 444211 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.08E+02 0.00E+00 2.41E+02 Sample ID: 445281 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-2.9E+01 0.00E+00 2.30E+02 Sample ID: 446280 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.92E+01 0.00E+00 2.35E+02 Sample ID: 446784 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.4E+02 0.00E+00 2.42E+02 Sample ID: 447110 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-5.1E+01 0.00E+00 2.41E+02 Sample ID: 447763 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.2E+01 0.00E+00 2.25E+02 Sample ID: 448227 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.09E+01 0.00E+00 2.28E+02 Sample ID: 448853 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.75E+02 0.00E+00 2.30E+02 Sample ID: 449166 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.60E+01 0.00E+00 2.36E+02 Sample ID: 449903 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.06E+02 0.00E+00 2.41E+02 Sample ID: 450569 Sample Dates: 8/7/2017 - 8/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <1.50E+01 0.00E+00 1.50E+01 Fe-59 <2.08E+01 0.00E+00 2.08E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <2.65E+01 0.00E+00 2.65E+01 Zr-95 <1.48E+01 0.00E+00 1.48E+01 Nb-95 <1.46E+01 0.00E+00 1.46E+01 I-131 <2.22E+01 0.00E+00 2.22E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <1.68E+01 0.00E+00 1.68E+01 La-140 <6.20E+01 0.00E+00 6.20E+01 Ba-140 <3.83E+01 0.00E+00 3.83E+01 Total-Gam 0.00E+00 H3SW <-9.5E+00 0.00E+00 2.58E+02 Sample ID: 451609 Sample Dates: 9/7/2017 - 9/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.38E+01 0.00E+00 1.38E+01 Co-58 <1.09E+01 0.00E+00 1.09E+01 Fe-59 <3.27E+01 0.00E+00 3.27E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <2.18E+01 0.00E+00 2.18E+01 Zr-95 <2.64E+01 0.00E+00 2.64E+01 Nb-95 <1.09E+01 0.00E+00 1.09E+01 I-131 <1.68E+01 0.00E+00 1.68E+01 Cs-134 <1.45E+01 0.00E+00 1.45E+01 Cs-137 <1.57E+01 0.00E+00 1.57E+01 La-140 <1.20E+02 0.00E+00 1.20E+02 Ba-140 <8.67E+01 0.00E+00 8.67E+01 Total-Gam 0.00E+00 H3SW <-3.6E+01 0.00E+00 2.38E+02 Sample ID: 461273 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.00E+00 0.00E+00 5.00E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 112 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 609 Sample Point 609 [ INDICATOR - -- @ 0 miles ]

Sample ID: 461273 Sample Dates: 10/10/2017 - 10/10/2017 Nuclide Activity 2 Sigma Error MDA Co-58 <6.71E+00 0.00E+00 6.71E+00 Fe-59 <9.50E+00 0.00E+00 9.50E+00 Co-60 <5.15E+00 0.00E+00 5.15E+00 Zn-65 <1.42E+01 0.00E+00 1.42E+01 Zr-95 <1.05E+01 0.00E+00 1.05E+01 Nb-95 <5.84E+00 0.00E+00 5.84E+00 I-131 <5.69E+00 0.00E+00 5.69E+00 Cs-134 <7.00E+00 0.00E+00 7.00E+00 Cs-137 <5.91E+00 0.00E+00 5.91E+00 BaLa-140 <7.96E+00 0.00E+00 7.96E+00 Total-Gam 0.00E+00 H3SW <-9.9E+01 0.00E+00 2.03E+02 Sample ID: 461921 Sample Dates: 11/6/2017 - 11/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <5.71E+00 0.00E+00 5.71E+00 Co-58 <5.47E+00 0.00E+00 5.47E+00 Fe-59 <1.23E+01 0.00E+00 1.23E+01 Co-60 <8.09E+00 0.00E+00 8.09E+00 Zn-65 <1.31E+01 0.00E+00 1.31E+01 Zr-95 <1.06E+01 0.00E+00 1.06E+01 Nb-95 <5.75E+00 0.00E+00 5.75E+00 I-131 <6.07E+00 0.00E+00 6.07E+00 Cs-134 <5.90E+00 0.00E+00 5.90E+00 Cs-137 <5.14E+00 0.00E+00 5.14E+00 BaLa-140 <7.10E+00 0.00E+00 7.10E+00 Total-Gam 0.00E+00 H3SW <-2.4E+01 0.00E+00 1.79E+02 Sample ID: 464238 Sample Dates: 12/12/2017 - 12/12/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.13E+00 0.00E+00 6.13E+00 Co-58 <5.70E+00 0.00E+00 5.70E+00 Fe-59 <1.01E+01 0.00E+00 1.01E+01 Co-60 <5.36E+00 0.00E+00 5.36E+00 Zn-65 <9.86E+00 0.00E+00 9.86E+00 Zr-95 <8.86E+00 0.00E+00 8.86E+00 Nb-95 <6.66E+00 0.00E+00 6.66E+00 I-131 <9.04E+00 0.00E+00 9.04E+00 Cs-134 <6.46E+00 0.00E+00 6.46E+00 Cs-137 <4.95E+00 0.00E+00 4.95E+00 BaLa-140 <1.06E+01 0.00E+00 1.06E+01 Total-Gam 0.00E+00 H3SW <-4.0E+01 0.00E+00 1.88E+02 Sample Point 610 [ INDICATOR - -- @ 0 miles ]

Sample ID: 432862 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.1E+02 0.00E+00 2.53E+02 Sample ID: 433264 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.3E+03 0.00E+00 3.11E+02 Sample ID: 433681 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.16E+02 0.00E+00 2.58E+02 Sample ID: 434416 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.17E+02 0.00E+00 2.46E+02 Sample ID: 435060 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-7.7E+01 0.00E+00 2.51E+02 Sample ID: 435770 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.59E+02 0.00E+00 2.50E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 113 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 610 Sample Point 610 [ INDICATOR - -- @ 0 miles ]

Sample ID: 436220 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.27E+02 0.00E+00 2.47E+02 Sample ID: 436671 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.1E+01 0.00E+00 2.44E+02 Sample ID: 437532 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.9E+02 0.00E+00 2.43E+02 Sample ID: 438262 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.18E+00 0.00E+00 2.35E+02 Sample ID: 438765 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-8.5E+03 0.00E+00 5.66E+02 Sample ID: 439108 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-8.6E+01 0.00E+00 2.50E+02 Sample ID: 439961 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+02 0.00E+00 2.55E+02 Sample ID: 440533 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-3.3E+01 0.00E+00 2.28E+02 Sample ID: 441373 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.54E+01 0.00E+00 2.26E+02 Sample ID: 441784 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <3.10E+01 0.00E+00 2.38E+02 Sample ID: 442231 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.83E+02 0.00E+00 2.34E+02 Sample ID: 442822 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.6E+01 0.00E+00 2.43E+02 Sample ID: 443260 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.05E+01 0.00E+00 2.41E+02 Sample ID: 443818 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA H3SW <6.78E+01 0.00E+00 2.33E+02 Sample ID: 444212 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.3E+01 0.00E+00 2.45E+02 Sample ID: 445282 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.38E+01 0.00E+00 2.31E+02 Sample ID: 446281 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA H3SW <2.59E+01 0.00E+00 2.32E+02 Sample ID: 446785 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-1.5E+02 0.00E+00 2.41E+02 Sample ID: 447111 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-4.0E+01 0.00E+00 2.42E+02 Sample ID: 447764 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA H3SW <5.07E+01 0.00E+00 2.25E+02 Sample ID: 448228 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA H3SW <-7.3E+01 0.00E+00 2.28E+02 Sample ID: 448854 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA H3SW <7.05E+01 0.00E+00 2.30E+02 Sample ID: 449167 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA H3SW <4.57E+01 0.00E+00 2.36E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 114 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 610 Sample Point 610 [ INDICATOR - -- @ 0 miles ]

Sample ID: 449904 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA H3SW <1.67E+02 0.00E+00 2.42E+02 Sample Point 1065 [ INDICATOR - @ 0 miles ]

Sample ID: 432847 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.62E+01 0.00E+00 1.62E+01 Co-58 <1.34E+01 0.00E+00 1.34E+01 Fe-59 <4.06E+01 0.00E+00 4.06E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <2.15E+01 0.00E+00 2.15E+01 Zr-95 <1.44E+01 0.00E+00 1.44E+01 Nb-95 <1.14E+01 0.00E+00 1.14E+01 I-131 <1.29E+01 0.00E+00 1.29E+01 Cs-134 <1.38E+01 0.00E+00 1.38E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <1.12E+01 0.00E+00 1.12E+01 Ba-140 <4.20E+01 0.00E+00 4.20E+01 Total-Gam 0.00E+00 Sample ID: 433249 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.73E+01 0.00E+00 1.73E+01 Co-58 <1.47E+01 0.00E+00 1.47E+01 Fe-59 <1.92E+01 0.00E+00 1.92E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Zr-95 <3.06E+01 0.00E+00 3.06E+01 Nb-95 <1.52E+01 0.00E+00 1.52E+01 I-131 <1.31E+01 0.00E+00 1.31E+01 Cs-134 <9.73E+00 0.00E+00 9.73E+00 Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <1.97E+01 0.00E+00 1.97E+01 Ba-140 <5.49E+01 0.00E+00 5.49E+01 Total-Gam 0.00E+00 Sample ID: 433666 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <1.60E+01 0.00E+00 1.60E+01 Fe-59 <2.74E+01 0.00E+00 2.74E+01 Co-60 <1.78E+01 0.00E+00 1.78E+01 Zn-65 <4.04E+01 0.00E+00 4.04E+01 Zr-95 <1.78E+01 0.00E+00 1.78E+01 Nb-95 <1.16E+01 0.00E+00 1.16E+01 I-131 <1.17E+01 0.00E+00 1.17E+01 Cs-134 <9.73E+00 0.00E+00 9.73E+00 Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <2.12E+01 0.00E+00 2.12E+01 Ba-140 <5.04E+01 0.00E+00 5.04E+01 Total-Gam 0.00E+00 Sample ID: 434401 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.62E+01 0.00E+00 1.62E+01 Co-58 <1.34E+01 0.00E+00 1.34E+01 Fe-59 <1.36E+01 0.00E+00 1.36E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Zr-95 <2.16E+01 0.00E+00 2.16E+01 Nb-95 <1.40E+01 0.00E+00 1.40E+01 I-131 <1.18E+01 0.00E+00 1.18E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <1.20E+01 0.00E+00 1.20E+01 Ba-140 <4.24E+01 0.00E+00 4.24E+01 Total-Gam 0.00E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 115 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1065 Sample Point 1065 [ INDICATOR - @ 0 miles ]

Sample ID: 435045 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <1.21E+01 0.00E+00 1.21E+01 Fe-59 <2.75E+01 0.00E+00 2.75E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Zr-95 <1.46E+01 0.00E+00 1.46E+01 Nb-95 <1.75E+01 0.00E+00 1.75E+01 I-131 <1.74E+01 0.00E+00 1.74E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <1.68E+01 0.00E+00 1.68E+01 Ba-140 <4.43E+01 0.00E+00 4.43E+01 Total-Gam 0.00E+00 Sample ID: 435755 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.21E+01 0.00E+00 1.21E+01 Fe-59 <3.07E+01 0.00E+00 3.07E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Zr-95 <2.30E+01 0.00E+00 2.30E+01 Nb-95 <1.64E+01 0.00E+00 1.64E+01 I-131 <1.56E+01 0.00E+00 1.56E+01 Cs-134 <1.27E+01 0.00E+00 1.27E+01 Cs-137 <8.40E+00 0.00E+00 8.40E+00 La-140 <1.58E+01 0.00E+00 1.58E+01 Ba-140 <3.59E+01 0.00E+00 3.59E+01 Total-Gam 0.00E+00 Sample ID: 436205 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.67E+00 0.00E+00 8.67E+00 Co-58 <1.62E+01 0.00E+00 1.62E+01 Fe-59 <2.41E+01 0.00E+00 2.41E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <3.06E+01 0.00E+00 3.06E+01 Zr-95 <1.80E+01 0.00E+00 1.80E+01 Nb-95 <1.57E+01 0.00E+00 1.57E+01 I-131 <1.37E+01 0.00E+00 1.37E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <4.17E+01 0.00E+00 4.17E+01 Ba-140 <5.02E+01 0.00E+00 5.02E+01 Total-Gam 0.00E+00 Sample ID: 436656 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.60E+01 0.00E+00 1.60E+01 Fe-59 <2.74E+01 0.00E+00 2.74E+01 Co-60 <1.80E+01 0.00E+00 1.80E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.52E+01 0.00E+00 2.52E+01 Nb-95 <1.54E+01 0.00E+00 1.54E+01 I-131 <1.86E+01 0.00E+00 1.86E+01 Cs-134 <1.60E+01 0.00E+00 1.60E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.70E+01 0.00E+00 2.70E+01 Ba-140 <5.07E+01 0.00E+00 5.07E+01 Total-Gam 0.00E+00 Sample ID: 437517 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.70E+01 0.00E+00 1.70E+01 Fe-59 <2.35E+01 0.00E+00 2.35E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 116 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1065 Sample Point 1065 [ INDICATOR - @ 0 miles ]

Sample ID: 437517 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <1.77E+01 0.00E+00 1.77E+01 Nb-95 <1.28E+01 0.00E+00 1.28E+01 I-131 <1.57E+01 0.00E+00 1.57E+01 Cs-134 <9.73E+00 0.00E+00 9.73E+00 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <1.66E+01 0.00E+00 1.66E+01 Ba-140 <4.23E+01 0.00E+00 4.23E+01 Total-Gam 0.00E+00 Sample ID: 438247 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <8.55E+00 0.00E+00 8.55E+00 Fe-59 <2.04E+01 0.00E+00 2.04E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <4.04E+01 0.00E+00 4.04E+01 Zr-95 <1.03E+01 0.00E+00 1.03E+01 Nb-95 <1.16E+01 0.00E+00 1.16E+01 I-131 <1.24E+01 0.00E+00 1.24E+01 Cs-134 <1.19E+01 0.00E+00 1.19E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <2.61E+01 0.00E+00 2.61E+01 Ba-140 <4.72E+01 0.00E+00 4.72E+01 Total-Gam 0.00E+00 Sample ID: 439280 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Total-Gam 0.00E+00 Sample ID: 439093 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <6.04E+00 0.00E+00 6.04E+00 Fe-59 <2.03E+01 0.00E+00 2.03E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <3.41E+01 0.00E+00 3.41E+01 Zr-95 <1.77E+01 0.00E+00 1.77E+01 Nb-95 <2.16E+01 0.00E+00 2.16E+01 I-131 <1.00E+01 0.00E+00 1.00E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <5.94E+00 0.00E+00 5.94E+00 La-140 <2.90E+01 0.00E+00 2.90E+01 Ba-140 <5.02E+01 0.00E+00 5.02E+01 Total-Gam 0.00E+00 Sample ID: 439946 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.90E+01 0.00E+00 1.90E+01 Fe-59 <2.35E+01 0.00E+00 2.35E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <4.03E+01 0.00E+00 4.03E+01 Zr-95 <1.25E+01 0.00E+00 1.25E+01 Nb-95 <1.81E+01 0.00E+00 1.81E+01 I-131 <1.10E+01 0.00E+00 1.10E+01 Cs-134 <1.44E+01 0.00E+00 1.44E+01 Cs-137 <1.88E+01 0.00E+00 1.88E+01 La-140 <1.97E+01 0.00E+00 1.97E+01 Ba-140 <3.44E+01 0.00E+00 3.44E+01 Total-Gam 0.00E+00 Sample ID: 440518 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.65E+00 0.00E+00 8.65E+00 Co-58 <1.35E+01 0.00E+00 1.35E+01 Fe-59 <4.11E+01 0.00E+00 4.11E+01 Co-60 <1.97E+01 0.00E+00 1.97E+01 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 117 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1065 Sample Point 1065 [ INDICATOR - @ 0 miles ]

Sample ID: 440518 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Zr-95 <2.91E+01 0.00E+00 2.91E+01 Nb-95 <1.30E+01 0.00E+00 1.30E+01 I-131 <1.89E+01 0.00E+00 1.89E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.68E+01 0.00E+00 1.68E+01 La-140 <2.13E+01 0.00E+00 2.13E+01 Ba-140 <4.72E+01 0.00E+00 4.72E+01 Total-Gam 0.00E+00 Sample ID: 441358 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.04E+01 0.00E+00 1.04E+01 Fe-59 <2.71E+01 0.00E+00 2.71E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.70E+01 0.00E+00 2.70E+01 Nb-95 <1.15E+01 0.00E+00 1.15E+01 I-131 <1.30E+01 0.00E+00 1.30E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.46E+01 0.00E+00 1.46E+01 La-140 <2.62E+01 0.00E+00 2.62E+01 Ba-140 <2.99E+01 0.00E+00 2.99E+01 Total-Gam 0.00E+00 Sample ID: 441769 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.62E+01 0.00E+00 1.62E+01 Co-58 <1.48E+01 0.00E+00 1.48E+01 Fe-59 <2.04E+01 0.00E+00 2.04E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <2.16E+01 0.00E+00 2.16E+01 Zr-95 <2.72E+01 0.00E+00 2.72E+01 Nb-95 <1.83E+01 0.00E+00 1.83E+01 I-131 <1.31E+01 0.00E+00 1.31E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <2.17E+01 0.00E+00 2.17E+01 Ba-140 <4.73E+01 0.00E+00 4.73E+01 Total-Gam 0.00E+00 Sample ID: 442216 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <1.35E+01 0.00E+00 1.35E+01 Fe-59 <1.92E+01 0.00E+00 1.92E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.50E+01 0.00E+00 2.50E+01 Nb-95 <1.62E+01 0.00E+00 1.62E+01 I-131 <1.63E+01 0.00E+00 1.63E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <2.14E+01 0.00E+00 2.14E+01 Ba-140 <4.60E+01 0.00E+00 4.60E+01 Total-Gam 0.00E+00 Sample ID: 442807 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <8.55E+00 0.00E+00 8.55E+00 Fe-59 <1.37E+01 0.00E+00 1.37E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <4.32E+01 0.00E+00 4.32E+01 Zr-95 <2.06E+01 0.00E+00 2.06E+01 Nb-95 <1.92E+01 0.00E+00 1.92E+01 I-131 <1.37E+01 0.00E+00 1.37E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 118 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1065 Sample Point 1065 [ INDICATOR - @ 0 miles ]

Sample ID: 442807 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <2.15E+01 0.00E+00 2.15E+01 Ba-140 <4.37E+01 0.00E+00 4.37E+01 Total-Gam 0.00E+00 Sample ID: 443245 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <1.20E+01 0.00E+00 1.20E+01 Fe-59 <3.49E+01 0.00E+00 3.49E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <2.15E+01 0.00E+00 2.15E+01 Zr-95 <2.50E+01 0.00E+00 2.50E+01 Nb-95 <1.51E+01 0.00E+00 1.51E+01 I-131 <1.56E+01 0.00E+00 1.56E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <1.62E+01 0.00E+00 1.62E+01 Ba-140 <5.44E+01 0.00E+00 5.44E+01 Total-Gam 0.00E+00 Sample ID: 443803 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <6.00E+00 0.00E+00 6.00E+00 Fe-59 <1.35E+01 0.00E+00 1.35E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <3.41E+01 0.00E+00 3.41E+01 Zr-95 <3.05E+01 0.00E+00 3.05E+01 Nb-95 <1.51E+01 0.00E+00 1.51E+01 I-131 <1.35E+01 0.00E+00 1.35E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <5.94E+00 0.00E+00 5.94E+00 La-140 <1.13E+01 0.00E+00 1.13E+01 Ba-140 <4.21E+01 0.00E+00 4.21E+01 Total-Gam 0.00E+00 Sample ID: 444197 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.39E+01 0.00E+00 1.39E+01 Co-58 <1.14E+01 0.00E+00 1.14E+01 Fe-59 <2.33E+01 0.00E+00 2.33E+01 Co-60 <1.40E+01 0.00E+00 1.40E+01 Zn-65 <2.21E+01 0.00E+00 2.21E+01 Zr-95 <2.76E+01 0.00E+00 2.76E+01 Nb-95 <2.17E+01 0.00E+00 2.17E+01 I-131 <2.85E+01 0.00E+00 2.85E+01 Cs-134 <1.55E+01 0.00E+00 1.55E+01 Cs-137 <1.97E+01 0.00E+00 1.97E+01 La-140 <7.20E+02 0.00E+00 7.20E+02 Ba-140 <6.93E+01 0.00E+00 6.93E+01 Total-Gam 0.00E+00 Sample ID: 445267 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.86E+01 0.00E+00 1.86E+01 Co-58 <1.56E+01 0.00E+00 1.56E+01 Fe-59 <2.57E+01 0.00E+00 2.57E+01 Co-60 <8.06E+00 0.00E+00 8.06E+00 Zn-65 <3.79E+01 0.00E+00 3.79E+01 Zr-95 <2.67E+01 0.00E+00 2.67E+01 Nb-95 <1.82E+01 0.00E+00 1.82E+01 I-131 <1.94E+01 0.00E+00 1.94E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <1.31E+02 0.00E+00 1.31E+02 Ba-140 <8.20E+01 0.00E+00 8.20E+01 Total-Gam 0.00E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 119 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1065 Sample Point 1065 [ INDICATOR - @ 0 miles ]

Sample ID: 446266 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <8.50E+00 0.00E+00 8.50E+00 Fe-59 <1.36E+01 0.00E+00 1.36E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <3.73E+01 0.00E+00 3.73E+01 Zr-95 <3.23E+01 0.00E+00 3.23E+01 Nb-95 <1.81E+01 0.00E+00 1.81E+01 I-131 <1.57E+01 0.00E+00 1.57E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <1.19E+01 0.00E+00 1.19E+01 Ba-140 <4.89E+01 0.00E+00 4.89E+01 Total-Gam 0.00E+00 Sample ID: 446770 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <8.57E+00 0.00E+00 8.57E+00 Fe-59 <1.94E+01 0.00E+00 1.94E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.52E+01 0.00E+00 2.52E+01 Nb-95 <1.75E+01 0.00E+00 1.75E+01 I-131 <1.03E+01 0.00E+00 1.03E+01 Cs-134 <1.27E+01 0.00E+00 1.27E+01 Cs-137 <1.57E+01 0.00E+00 1.57E+01 La-140 <2.84E+01 0.00E+00 2.84E+01 Ba-140 <4.42E+01 0.00E+00 4.42E+01 Total-Gam 0.00E+00 Sample ID: 447096 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.62E+01 0.00E+00 1.62E+01 Co-58 <1.90E+01 0.00E+00 1.90E+01 Fe-59 <3.32E+01 0.00E+00 3.32E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <1.52E+01 0.00E+00 1.52E+01 Zr-95 <2.28E+01 0.00E+00 2.28E+01 Nb-95 <1.14E+01 0.00E+00 1.14E+01 I-131 <9.56E+00 0.00E+00 9.56E+00 Cs-134 <9.72E+00 0.00E+00 9.73E+00 Cs-137 <1.57E+01 0.00E+00 1.57E+01 La-140 <1.63E+01 0.00E+00 1.63E+01 Ba-140 <5.44E+01 0.00E+00 5.44E+01 Total-Gam 0.00E+00 Sample ID: 447749 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <1.20E+01 0.00E+00 1.20E+01 Fe-59 <2.71E+01 0.00E+00 2.71E+01 Co-60 <1.61E+01 0.00E+00 1.61E+01 Zn-65 <2.15E+01 0.00E+00 2.15E+01 Zr-95 <2.70E+01 0.00E+00 2.70E+01 Nb-95 <9.89E+00 0.00E+00 9.89E+00 I-131 <1.40E+01 0.00E+00 1.40E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <3.11E+01 0.00E+00 3.11E+01 Ba-140 <4.85E+01 0.00E+00 4.85E+01 Total-Gam 0.00E+00 Sample ID: 448213 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.59E+01 0.00E+00 1.59E+01 Fe-59 <1.92E+01 0.00E+00 1.92E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 120 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1065 Sample Point 1065 [ INDICATOR - @ 0 miles ]

Sample ID: 448213 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA Zn-65 <3.41E+01 0.00E+00 3.41E+01 Zr-95 <2.49E+01 0.00E+00 2.49E+01 Nb-95 <1.40E+01 0.00E+00 1.40E+01 I-131 <1.30E+01 0.00E+00 1.30E+01 Cs-134 <1.27E+01 0.00E+00 1.27E+01 Cs-137 <1.68E+01 0.00E+00 1.68E+01 La-140 <2.82E+01 0.00E+00 2.82E+01 Ba-140 <4.88E+01 0.00E+00 4.88E+01 Total-Gam 0.00E+00 Sample ID: 448839 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.34E+01 0.00E+00 1.34E+01 Fe-59 <1.36E+01 0.00E+00 1.36E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <3.73E+01 0.00E+00 3.73E+01 Zr-95 <2.79E+01 0.00E+00 2.79E+01 Nb-95 <1.62E+01 0.00E+00 1.62E+01 I-131 <1.47E+01 0.00E+00 1.47E+01 Cs-134 <1.54E+01 0.00E+00 1.54E+01 Cs-137 <1.68E+01 0.00E+00 1.68E+01 La-140 <2.69E+01 0.00E+00 2.69E+01 Ba-140 <4.57E+01 0.00E+00 4.57E+01 Total-Gam 0.00E+00 Sample ID: 449152 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.65E+00 0.00E+00 8.65E+00 Co-58 <8.56E+00 0.00E+00 8.56E+00 Fe-59 <2.89E+01 0.00E+00 2.89E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Zr-95 <2.06E+01 0.00E+00 2.06E+01 Nb-95 <1.64E+01 0.00E+00 1.64E+01 I-131 <1.25E+01 0.00E+00 1.25E+01 Cs-134 <1.60E+01 0.00E+00 1.60E+01 Cs-137 <2.22E+01 0.00E+00 2.22E+01 La-140 <2.23E+01 0.00E+00 2.23E+01 Ba-140 <5.67E+01 0.00E+00 5.67E+01 Total-Gam 0.00E+00 Sample ID: 449889 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.47E+01 0.00E+00 1.47E+01 Fe-59 <2.71E+01 0.00E+00 2.71E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <3.41E+01 0.00E+00 3.41E+01 Zr-95 <1.76E+01 0.00E+00 1.76E+01 Nb-95 <1.51E+01 0.00E+00 1.51E+01 I-131 <1.30E+01 0.00E+00 1.30E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.46E+01 0.00E+00 1.46E+01 La-140 <2.32E+01 0.00E+00 2.32E+01 Ba-140 <4.56E+01 0.00E+00 4.56E+01 Total-Gam 0.00E+00 Sample Point 1066 [ INDICATOR - @ 0 miles ]

Sample ID: 432848 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <8.55E+00 0.00E+00 8.55E+00 Fe-59 <2.74E+01 0.00E+00 2.74E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <3.74E+01 0.00E+00 3.74E+01 Zr-95 <1.26E+01 0.00E+00 1.26E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 121 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1066 Sample Point 1066 [ INDICATOR - @ 0 miles ]

Sample ID: 432848 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA Nb-95 <1.64E+01 0.00E+00 1.64E+01 I-131 <1.02E+01 0.00E+00 1.02E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <1.53E+01 0.00E+00 1.53E+01 Ba-140 <4.38E+01 0.00E+00 4.38E+01 Total-Gam 0.00E+00 Sample ID: 433250 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <1.20E+01 0.00E+00 1.20E+01 Fe-59 <1.92E+01 0.00E+00 1.92E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <4.31E+01 0.00E+00 4.31E+01 Zr-95 <2.29E+01 0.00E+00 2.29E+01 Nb-95 <1.62E+01 0.00E+00 1.62E+01 I-131 <1.19E+01 0.00E+00 1.19E+01 Cs-134 <9.62E+00 0.00E+00 9.62E+00 Cs-137 <1.88E+01 0.00E+00 1.88E+01 La-140 <3.14E+01 0.00E+00 3.14E+01 Ba-140 <4.60E+01 0.00E+00 4.60E+01 Total-Gam 0.00E+00 Sample ID: 433667 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.05E+01 0.00E+00 1.05E+01 Fe-59 <2.37E+01 0.00E+00 2.37E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <1.45E+01 0.00E+00 1.45E+01 Nb-95 <1.42E+01 0.00E+00 1.42E+01 I-131 <1.49E+01 0.00E+00 1.50E+01 Cs-134 <1.19E+01 0.00E+00 1.19E+01 Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <4.29E+01 0.00E+00 4.29E+01 Ba-140 <5.65E+01 0.00E+00 5.65E+01 Total-Gam 0.00E+00 Sample ID: 434402 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.73E+01 0.00E+00 1.73E+01 Co-58 <1.59E+01 0.00E+00 1.59E+01 Fe-59 <2.86E+01 0.00E+00 2.86E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <1.76E+01 0.00E+00 1.76E+01 Nb-95 <9.93E+00 0.00E+00 9.93E+00 I-131 <1.53E+01 0.00E+00 1.53E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <2.09E+01 0.00E+00 2.09E+01 Ba-140 <5.48E+01 0.00E+00 5.48E+01 Total-Gam 0.00E+00 Sample ID: 435046 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.22E+01 0.00E+00 1.22E+01 Fe-59 <2.07E+01 0.00E+00 2.07E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <3.06E+01 0.00E+00 3.06E+01 Zr-95 <1.47E+01 0.00E+00 1.47E+01 Nb-95 <1.33E+01 0.00E+00 1.33E+01 I-131 <1.02E+01 0.00E+00 1.02E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <8.40E+00 0.00E+00 8.41E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 122 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1066 Sample Point 1066 [ INDICATOR - @ 0 miles ]

Sample ID: 435046 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA La-140 <4.22E+01 0.00E+00 4.22E+01 Ba-140 <4.25E+01 0.00E+00 4.25E+01 Total-Gam 0.00E+00 Sample ID: 435756 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.35E+01 0.00E+00 1.35E+01 Fe-59 <1.37E+01 0.00E+00 1.37E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <2.16E+01 0.00E+00 2.16E+01 Zr-95 <1.26E+01 0.00E+00 1.26E+01 Nb-95 <1.42E+01 0.00E+00 1.42E+01 I-131 <1.18E+01 0.00E+00 1.18E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.26E+01 0.00E+00 2.26E+01 Ba-140 <5.68E+01 0.00E+00 5.68E+01 Total-Gam 0.00E+00 Sample ID: 436206 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.23E+01 0.00E+00 1.23E+01 Co-58 <1.37E+01 0.00E+00 1.37E+01 Fe-59 <2.41E+01 0.00E+00 2.41E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <2.17E+01 0.00E+00 2.17E+01 Zr-95 <1.80E+01 0.00E+00 1.80E+01 Nb-95 <1.45E+01 0.00E+00 1.45E+01 I-131 <1.77E+01 0.00E+00 1.77E+01 Cs-134 <1.27E+01 0.00E+00 1.27E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <4.94E+01 0.00E+00 4.94E+01 Ba-140 <4.66E+01 0.00E+00 4.66E+01 Total-Gam 0.00E+00 Sample ID: 436657 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.73E+01 0.00E+00 1.73E+01 Co-58 <1.35E+01 0.00E+00 1.35E+01 Fe-59 <2.04E+01 0.00E+00 2.04E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.06E+01 0.00E+00 2.06E+01 Nb-95 <1.42E+01 0.00E+00 1.42E+01 I-131 <1.50E+01 0.00E+00 1.50E+01 Cs-134 <1.27E+01 0.00E+00 1.27E+01 Cs-137 <8.40E+00 0.00E+00 8.40E+00 La-140 <2.72E+01 0.00E+00 2.72E+01 Ba-140 <4.74E+01 0.00E+00 4.74E+01 Total-Gam 0.00E+00 Sample ID: 437518 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.34E+01 0.00E+00 1.34E+01 Fe-59 <2.02E+01 0.00E+00 2.02E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <3.41E+01 0.00E+00 3.41E+01 Zr-95 <2.04E+01 0.00E+00 2.04E+01 Nb-95 <9.92E+00 0.00E+00 9.92E+00 I-131 <1.30E+01 0.00E+00 1.30E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <1.65E+01 0.00E+00 1.65E+01 Ba-140 <5.18E+01 0.00E+00 5.18E+01 Total-Gam 0.00E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 123 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1066 Sample Point 1066 [ INDICATOR - @ 0 miles ]

Sample ID: 438248 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <1.35E+01 0.00E+00 1.35E+01 Fe-59 <1.94E+01 0.00E+00 1.94E+01 Co-60 <1.61E+01 0.00E+00 1.61E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <1.45E+01 0.00E+00 1.45E+01 Nb-95 <1.53E+01 0.00E+00 1.53E+01 I-131 <1.43E+01 0.00E+00 1.43E+01 Cs-134 <9.63E+00 0.00E+00 9.63E+00 Cs-137 <1.57E+01 0.00E+00 1.57E+01 La-140 <2.16E+01 0.00E+00 2.16E+01 Ba-140 <5.92E+01 0.00E+00 5.92E+01 Total-Gam 0.00E+00 Sample ID: 439281 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Total-Gam 0.00E+00 Sample ID: 439094 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.65E+00 0.00E+00 8.65E+00 Co-58 <8.54E+00 0.00E+00 8.54E+00 Fe-59 <3.35E+01 0.00E+00 3.35E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.05E+01 0.00E+00 2.05E+01 Nb-95 <1.92E+01 0.00E+00 1.92E+01 I-131 <1.59E+01 0.00E+00 1.59E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.06E+01 0.00E+00 2.06E+01 Ba-140 <4.70E+01 0.00E+00 4.70E+01 Total-Gam 0.00E+00 Sample ID: 439947 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.59E+01 0.00E+00 1.59E+01 Fe-59 <1.92E+01 0.00E+00 1.92E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.49E+01 0.00E+00 2.49E+01 Nb-95 <1.62E+01 0.00E+00 1.62E+01 I-131 <1.66E+01 0.00E+00 1.66E+01 Cs-134 <1.27E+01 0.00E+00 1.27E+01 Cs-137 <1.46E+01 0.00E+00 1.46E+01 La-140 <2.35E+01 0.00E+00 2.35E+01 Ba-140 <5.46E+01 0.00E+00 5.46E+01 Total-Gam 0.00E+00 Sample ID: 440519 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <8.56E+00 0.00E+00 8.56E+00 Fe-59 <2.89E+01 0.00E+00 2.89E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <2.16E+01 0.00E+00 2.16E+01 Zr-95 <1.78E+01 0.00E+00 1.78E+01 Nb-95 <1.64E+01 0.00E+00 1.64E+01 I-131 <2.00E+01 0.00E+00 2.00E+01 Cs-134 <1.54E+01 0.00E+00 1.54E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <2.21E+01 0.00E+00 2.21E+01 Ba-140 <5.07E+01 0.00E+00 5.07E+01 Total-Gam 0.00E+00 Sample ID: 441359 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 124 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1066 Sample Point 1066 [ INDICATOR - @ 0 miles ]

Sample ID: 441359 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Co-58 <8.50E+00 0.00E+00 8.50E+00 Fe-59 <2.35E+01 0.00E+00 2.35E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.89E+01 0.00E+00 2.89E+01 Nb-95 <1.90E+01 0.00E+00 1.90E+01 I-131 <1.18E+01 0.00E+00 1.18E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.63E+01 0.00E+00 2.63E+01 Ba-140 <4.88E+01 0.00E+00 4.88E+01 Total-Gam 0.00E+00 Sample ID: 441770 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.21E+01 0.00E+00 1.21E+01 Fe-59 <3.36E+01 0.00E+00 3.36E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Zr-95 <2.06E+01 0.00E+00 2.06E+01 Nb-95 <1.54E+01 0.00E+00 1.54E+01 I-131 <1.50E+01 0.00E+00 1.50E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <2.19E+01 0.00E+00 2.19E+01 Ba-140 <4.74E+01 0.00E+00 4.74E+01 Total-Gam 0.00E+00 Sample ID: 442217 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.12E+00 0.00E+00 6.12E+00 Co-58 <1.36E+01 0.00E+00 1.36E+01 Fe-59 <2.89E+01 0.00E+00 2.89E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <2.16E+01 0.00E+00 2.16E+01 Zr-95 <3.09E+01 0.00E+00 3.09E+01 Nb-95 <1.43E+01 0.00E+00 1.43E+01 I-131 <1.79E+01 0.00E+00 1.79E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <2.89E+01 0.00E+00 2.89E+01 Ba-140 <3.13E+01 0.00E+00 3.13E+01 Total-Gam 0.00E+00 Sample ID: 442808 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.35E+01 0.00E+00 1.35E+01 Fe-59 <2.74E+01 0.00E+00 2.74E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <3.41E+01 0.00E+00 3.41E+01 Zr-95 <2.72E+01 0.00E+00 2.72E+01 Nb-95 <2.09E+01 0.00E+00 2.09E+01 I-131 <1.37E+01 0.00E+00 1.37E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.57E+01 0.00E+00 1.57E+01 La-140 <1.54E+01 0.00E+00 1.54E+01 Ba-140 <5.36E+01 0.00E+00 5.36E+01 Total-Gam 0.00E+00 Sample ID: 443246 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.62E+01 0.00E+00 1.62E+01 Co-58 <1.04E+01 0.00E+00 1.04E+01 Fe-59 <2.71E+01 0.00E+00 2.71E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <2.15E+01 0.00E+00 2.15E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 125 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1066 Sample Point 1066 [ INDICATOR - @ 0 miles ]

Sample ID: 443246 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Zr-95 <2.04E+01 0.00E+00 2.04E+01 Nb-95 <1.62E+01 0.00E+00 1.62E+01 I-131 <1.17E+01 0.00E+00 1.17E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <1.46E+01 0.00E+00 1.46E+01 La-140 <2.32E+01 0.00E+00 2.32E+01 Ba-140 <4.22E+01 0.00E+00 4.22E+01 Total-Gam 0.00E+00 Sample ID: 443804 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.60E+01 0.00E+00 1.60E+01 Fe-59 <2.74E+01 0.00E+00 2.74E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.51E+01 0.00E+00 2.51E+01 Nb-95 <1.30E+01 0.00E+00 1.30E+01 I-131 <8.32E+00 0.00E+00 8.32E+00 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <0.00E+00 0.00E+00 0.00E+00 La-140 <4.53E+01 0.00E+00 4.53E+01 Ba-140 <4.39E+01 0.00E+00 4.39E+01 Total-Gam 0.00E+00 Sample ID: 444198 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.39E+01 0.00E+00 1.39E+01 Co-58 <1.14E+01 0.00E+00 1.14E+01 Fe-59 <3.12E+01 0.00E+00 3.12E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <1.56E+01 0.00E+00 1.56E+01 Zr-95 <2.38E+01 0.00E+00 2.38E+01 Nb-95 <1.81E+01 0.00E+00 1.81E+01 I-131 <1.93E+01 0.00E+00 1.93E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <7.24E+02 0.00E+00 7.24E+02 Ba-140 <6.33E+01 0.00E+00 6.33E+01 Total-Gam 0.00E+00 Sample ID: 445268 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.24E+01 0.00E+00 1.24E+01 Co-58 <1.42E+01 0.00E+00 1.42E+01 Fe-59 <3.63E+01 0.00E+00 3.63E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <3.46E+01 0.00E+00 3.46E+01 Zr-95 <1.33E+01 0.00E+00 1.33E+01 Nb-95 <1.11E+01 0.00E+00 1.11E+01 I-131 <2.22E+01 0.00E+00 2.22E+01 Cs-134 <6.84E+00 0.00E+00 6.84E+00 Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <1.25E+02 0.00E+00 1.25E+02 Ba-140 <4.70E+01 0.00E+00 4.70E+01 Total-Gam 0.00E+00 Sample ID: 446267 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.20E+01 0.00E+00 1.20E+01 Fe-59 <2.35E+01 0.00E+00 2.35E+01 Co-60 <1.61E+01 0.00E+00 1.61E+01 Zn-65 <1.52E+01 0.00E+00 1.52E+01 Zr-95 <1.45E+01 0.00E+00 1.45E+01 Nb-95 <1.99E+01 0.00E+00 1.99E+01 I-131 <1.72E+01 0.00E+00 1.72E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 126 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1066 Sample Point 1066 [ INDICATOR - @ 0 miles ]

Sample ID: 446267 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.08E+01 0.00E+00 2.08E+01 Ba-140 <6.00E+01 0.00E+00 6.00E+01 Total-Gam 0.00E+00 Sample ID: 446771 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <8.57E+00 0.00E+00 8.57E+00 Fe-59 <2.75E+01 0.00E+00 2.75E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <3.41E+01 0.00E+00 3.41E+01 Zr-95 <2.91E+01 0.00E+00 2.91E+01 Nb-95 <1.43E+01 0.00E+00 1.43E+01 I-131 <1.40E+01 0.00E+00 1.40E+01 Cs-134 <9.63E+00 0.00E+00 9.63E+00 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.86E+01 0.00E+00 2.86E+01 Ba-140 <5.10E+01 0.00E+00 5.10E+01 Total-Gam 0.00E+00 Sample ID: 447097 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.20E+01 0.00E+00 1.20E+01 Fe-59 <2.71E+01 0.00E+00 2.71E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.70E+01 0.00E+00 2.70E+01 Nb-95 <1.40E+01 0.00E+00 1.40E+01 I-131 <1.41E+01 0.00E+00 1.41E+01 Cs-134 <8.33E+00 0.00E+00 8.33E+00 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <2.00E+01 0.00E+00 2.00E+01 Ba-140 <2.44E+01 0.00E+00 2.44E+01 Total-Gam 0.00E+00 Sample ID: 447750 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.62E+01 0.00E+00 1.62E+01 Co-58 <8.49E+00 0.00E+00 8.49E+00 Fe-59 <2.85E+01 0.00E+00 2.85E+01 Co-60 <1.61E+01 0.00E+00 1.61E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <3.05E+01 0.00E+00 3.05E+01 Nb-95 <1.28E+01 0.00E+00 1.28E+01 I-131 <1.29E+01 0.00E+00 1.29E+01 Cs-134 <1.54E+01 0.00E+00 1.54E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <1.12E+01 0.00E+00 1.12E+01 Ba-140 <5.15E+01 0.00E+00 5.15E+01 Total-Gam 0.00E+00 Sample ID: 448214 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <1.34E+01 0.00E+00 1.34E+01 Fe-59 <2.35E+01 0.00E+00 2.35E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <2.15E+01 0.00E+00 2.15E+01 Zr-95 <1.44E+01 0.00E+00 1.44E+01 Nb-95 <1.28E+01 0.00E+00 1.28E+01 I-131 <1.57E+01 0.00E+00 1.57E+01 Cs-134 <1.98E+01 0.00E+00 1.98E+01 Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <1.91E+01 0.00E+00 1.91E+01 Ba-140 <5.18E+01 0.00E+00 5.18E+01 Total-Gam 0.00E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 127 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1066 Sample Point 1066 [ INDICATOR - @ 0 miles ]

Sample ID: 448840 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.05E+01 0.00E+00 1.05E+01 Fe-59 <2.04E+01 0.00E+00 2.04E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <1.53E+01 0.00E+00 1.53E+01 Zr-95 <2.18E+01 0.00E+00 2.18E+01 Nb-95 <1.84E+01 0.00E+00 1.84E+01 I-131 <1.72E+01 0.00E+00 1.72E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <2.21E+01 0.00E+00 2.21E+01 Ba-140 <5.67E+01 0.00E+00 5.67E+01 Total-Gam 0.00E+00 Sample ID: 449153 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.48E+01 0.00E+00 1.48E+01 Fe-59 <3.06E+01 0.00E+00 3.06E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <2.16E+01 0.00E+00 2.16E+01 Zr-95 <1.78E+01 0.00E+00 1.78E+01 Nb-95 <1.42E+01 0.00E+00 1.42E+01 I-131 <1.30E+01 0.00E+00 1.30E+01 Cs-134 <1.38E+01 0.00E+00 1.38E+01 Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <3.63E+01 0.00E+00 3.63E+01 Ba-140 <5.35E+01 0.00E+00 5.35E+01 Total-Gam 0.00E+00 Sample ID: 449890 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.21E+01 0.00E+00 1.21E+01 Fe-59 <2.38E+01 0.00E+00 2.38E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <3.41E+01 0.00E+00 3.41E+01 Zr-95 <3.09E+01 0.00E+00 3.09E+01 Nb-95 <1.42E+01 0.00E+00 1.42E+01 I-131 <1.63E+01 0.00E+00 1.63E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <2.30E+01 0.00E+00 2.30E+01 Ba-140 <4.03E+01 0.00E+00 4.03E+01 Total-Gam 0.00E+00 Sample Point 1067 [ INDICATOR - @ 0 miles ]

Sample ID: 432849 Sample Dates: 1/4/2017 - 1/4/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.93E+01 0.00E+00 1.93E+01 Co-58 <1.21E+01 0.00E+00 1.21E+01 Fe-59 <2.37E+01 0.00E+00 2.37E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <3.74E+01 0.00E+00 3.74E+01 Zr-95 <2.51E+01 0.00E+00 2.51E+01 Nb-95 <1.42E+01 0.00E+00 1.42E+01 I-131 <9.31E+00 0.00E+00 9.31E+00 Cs-134 <1.19E+01 0.00E+00 1.19E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.71E+01 0.00E+00 2.71E+01 Ba-140 <3.58E+01 0.00E+00 3.58E+01 Total-Gam 0.00E+00 Sample ID: 433251 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.05E+01 0.00E+00 1.05E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 128 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1067 Sample Point 1067 [ INDICATOR - @ 0 miles ]

Sample ID: 433251 Sample Dates: 1/10/2017 - 1/10/2017 Nuclide Activity 2 Sigma Error MDA Fe-59 <2.05E+01 0.00E+00 2.05E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <2.16E+01 0.00E+00 2.16E+01 Zr-95 <2.73E+01 0.00E+00 2.73E+01 Nb-95 <1.65E+01 0.00E+00 1.65E+01 I-131 <1.04E+01 0.00E+00 1.04E+01 Cs-134 <9.63E+00 0.00E+00 9.63E+00 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.81E+01 0.00E+00 2.81E+01 Ba-140 <4.81E+01 0.00E+00 4.81E+01 Total-Gam 0.00E+00 Sample ID: 433668 Sample Dates: 1/17/2017 - 1/17/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <1.60E+01 0.00E+00 1.60E+01 Fe-59 <2.89E+01 0.00E+00 2.89E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <3.74E+01 0.00E+00 3.74E+01 Zr-95 <2.18E+01 0.00E+00 2.18E+01 Nb-95 <1.01E+01 0.00E+00 1.01E+01 I-131 <1.67E+01 0.00E+00 1.67E+01 Cs-134 <9.73E+00 0.00E+00 9.73E+00 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.25E+01 0.00E+00 2.25E+01 Ba-140 <4.75E+01 0.00E+00 4.75E+01 Total-Gam 0.00E+00 Sample ID: 434403 Sample Dates: 1/25/2017 - 1/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <2.12E+01 0.00E+00 2.12E+01 Co-58 <8.51E+00 0.00E+00 8.51E+00 Fe-59 <2.72E+01 0.00E+00 2.72E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.50E+01 0.00E+00 2.50E+01 Nb-95 <1.41E+01 0.00E+00 1.41E+01 I-131 <1.37E+01 0.00E+00 1.37E+01 Cs-134 <9.73E+00 0.00E+00 9.73E+00 Cs-137 <1.46E+01 0.00E+00 1.46E+01 La-140 <2.13E+01 0.00E+00 2.13E+01 Ba-140 <4.59E+01 0.00E+00 4.59E+01 Total-Gam 0.00E+00 Sample ID: 435047 Sample Dates: 1/31/2017 - 1/31/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <1.60E+01 0.00E+00 1.61E+01 Fe-59 <2.90E+01 0.00E+00 2.90E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <2.65E+01 0.00E+00 2.65E+01 Zr-95 <2.52E+01 0.00E+00 2.52E+01 Nb-95 <1.30E+01 0.00E+00 1.30E+01 I-131 <1.47E+01 0.00E+00 1.47E+01 Cs-134 <6.81E+00 0.00E+00 6.81E+00 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <3.48E+01 0.00E+00 3.48E+01 Ba-140 <3.64E+01 0.00E+00 3.64E+01 Total-Gam 0.00E+00 Sample ID: 435757 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.73E+01 0.00E+00 1.73E+01 Co-58 <1.21E+01 0.00E+00 1.21E+01 Fe-59 <1.37E+01 0.00E+00 1.37E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <2.16E+01 0.00E+00 2.16E+01 Zr-95 <2.52E+01 0.00E+00 2.52E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 129 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1067 Sample Point 1067 [ INDICATOR - @ 0 miles ]

Sample ID: 435757 Sample Dates: 2/8/2017 - 2/8/2017 Nuclide Activity 2 Sigma Error MDA Nb-95 <1.01E+01 0.00E+00 1.01E+01 I-131 <1.87E+01 0.00E+00 1.87E+01 Cs-134 <9.73E+00 0.00E+00 9.73E+00 Cs-137 <8.40E+00 0.00E+00 8.40E+00 La-140 <2.24E+01 0.00E+00 2.24E+01 Ba-140 <5.39E+01 0.00E+00 5.39E+01 Total-Gam 0.00E+00 Sample ID: 436207 Sample Dates: 2/14/2017 - 2/14/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <1.37E+01 0.00E+00 1.37E+01 Fe-59 <1.97E+01 0.00E+00 1.97E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <3.06E+01 0.00E+00 3.06E+01 Zr-95 <2.33E+01 0.00E+00 2.33E+01 Nb-95 <1.78E+01 0.00E+00 1.78E+01 I-131 <1.52E+01 0.00E+00 1.52E+01 Cs-134 <8.35E+00 0.00E+00 8.35E+00 Cs-137 <1.68E+01 0.00E+00 1.68E+01 La-140 <2.50E+01 0.00E+00 2.50E+01 Ba-140 <5.72E+01 0.00E+00 5.72E+01 Total-Gam 0.00E+00 Sample ID: 436658 Sample Dates: 2/21/2017 - 2/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <1.71E+01 0.00E+00 1.71E+01 Fe-59 <3.07E+01 0.00E+00 3.07E+01 Co-60 <2.28E+01 0.00E+00 2.28E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.18E+01 0.00E+00 2.18E+01 Nb-95 <1.01E+01 0.00E+00 1.01E+01 I-131 <1.61E+01 0.00E+00 1.61E+01 Cs-134 <1.44E+01 0.00E+00 1.44E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <1.57E+01 0.00E+00 1.57E+01 Ba-140 <5.95E+01 0.00E+00 5.95E+01 Total-Gam 0.00E+00 Sample ID: 437519 Sample Dates: 2/28/2017 - 2/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.65E+00 0.00E+00 8.65E+00 Co-58 <1.71E+01 0.00E+00 1.71E+01 Fe-59 <2.74E+01 0.00E+00 2.74E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Zr-95 <1.78E+01 0.00E+00 1.78E+01 Nb-95 <1.30E+01 0.00E+00 1.30E+01 I-131 <1.62E+01 0.00E+00 1.62E+01 Cs-134 <9.63E+00 0.00E+00 9.63E+00 Cs-137 <1.68E+01 0.00E+00 1.68E+01 La-140 <1.61E+01 0.00E+00 1.61E+01 Ba-140 <3.60E+01 0.00E+00 3.60E+01 Total-Gam 0.00E+00 Sample ID: 438249 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.35E+01 0.00E+00 1.35E+01 Fe-59 <3.06E+01 0.00E+00 3.06E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.81E+01 0.00E+00 2.81E+01 Nb-95 <1.84E+01 0.00E+00 1.84E+01 I-131 <1.38E+01 0.00E+00 1.38E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 130 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1067 Sample Point 1067 [ INDICATOR - @ 0 miles ]

Sample ID: 438249 Sample Dates: 3/7/2017 - 3/7/2017 Nuclide Activity 2 Sigma Error MDA La-140 <1.55E+01 0.00E+00 1.55E+01 Ba-140 <5.37E+01 0.00E+00 5.37E+01 Total-Gam 0.00E+00 Sample ID: 439282 Sample Dates: 3/14/2017 - 3/14/2017 Nuclide Activity 2 Sigma Error MDA Total-Gam 0.00E+00 Sample ID: 439095 Sample Dates: 3/21/2017 - 3/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.48E+01 0.00E+00 1.48E+01 Fe-59 <2.37E+01 0.00E+00 2.37E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <3.74E+01 0.00E+00 3.74E+01 Zr-95 <2.72E+01 0.00E+00 2.72E+01 Nb-95 <2.01E+01 0.00E+00 2.01E+01 I-131 <1.17E+01 0.00E+00 1.17E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.46E+01 0.00E+00 1.46E+01 La-140 <2.12E+01 0.00E+00 2.12E+01 Ba-140 <5.04E+01 0.00E+00 5.04E+01 Total-Gam 0.00E+00 Sample ID: 439948 Sample Dates: 3/28/2017 - 3/28/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.73E+01 0.00E+00 1.73E+01 Co-58 <1.20E+01 0.00E+00 1.20E+01 Fe-59 <2.71E+01 0.00E+00 2.71E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.50E+01 0.00E+00 2.50E+01 Nb-95 <1.51E+01 0.00E+00 1.51E+01 I-131 <1.47E+01 0.00E+00 1.47E+01 Cs-134 <1.18E+01 0.00E+00 1.18E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <2.02E+01 0.00E+00 2.02E+01 Ba-140 <3.45E+01 0.00E+00 3.45E+01 Total-Gam 0.00E+00 Sample ID: 440520 Sample Dates: 4/4/2017 - 4/4/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <1.35E+01 0.00E+00 1.35E+01 Fe-59 <1.94E+01 0.00E+00 1.94E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <0.00E+00 0.00E+00 0.00E+00 Zr-95 <1.78E+01 0.00E+00 1.78E+01 Nb-95 <1.01E+01 0.00E+00 1.01E+01 I-131 <1.39E+01 0.00E+00 1.39E+01 Cs-134 <1.52E+01 0.00E+00 1.52E+01 Cs-137 <1.46E+01 0.00E+00 1.46E+01 La-140 <1.60E+01 0.00E+00 1.60E+01 Ba-140 <5.68E+01 0.00E+00 5.68E+01 Total-Gam 0.00E+00 Sample ID: 441360 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <8.51E+00 0.00E+00 8.51E+00 Fe-59 <1.92E+01 0.00E+00 1.92E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.16E+01 0.00E+00 2.16E+01 Nb-95 <1.28E+01 0.00E+00 1.28E+01 I-131 <1.37E+01 0.00E+00 1.37E+01 Cs-134 <1.36E+01 0.00E+00 1.36E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <9.77E+00 0.00E+00 9.77E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 131 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1067 Sample Point 1067 [ INDICATOR - @ 0 miles ]

Sample ID: 441360 Sample Dates: 4/11/2017 - 4/11/2017 Nuclide Activity 2 Sigma Error MDA Ba-140 <3.47E+01 0.00E+00 3.47E+01 Total-Gam 0.00E+00 Sample ID: 441771 Sample Dates: 4/18/2017 - 4/18/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.73E+01 0.00E+00 1.73E+01 Co-58 <1.21E+01 0.00E+00 1.21E+01 Fe-59 <1.94E+01 0.00E+00 1.94E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <3.74E+01 0.00E+00 3.74E+01 Zr-95 <2.52E+01 0.00E+00 2.52E+01 Nb-95 <8.22E+00 0.00E+00 8.22E+00 I-131 <1.18E+01 0.00E+00 1.18E+01 Cs-134 <1.44E+01 0.00E+00 1.44E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <3.44E+01 0.00E+00 3.44E+01 Ba-140 <4.41E+01 0.00E+00 4.41E+01 Total-Gam 0.00E+00 Sample ID: 442218 Sample Dates: 4/25/2017 - 4/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <8.64E+00 0.00E+00 8.64E+00 Co-58 <8.51E+00 0.00E+00 8.51E+00 Fe-59 <2.35E+01 0.00E+00 2.35E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <2.15E+01 0.00E+00 2.15E+01 Zr-95 <2.89E+01 0.00E+00 2.89E+01 Nb-95 <1.72E+01 0.00E+00 1.72E+01 I-131 <8.84E+00 0.00E+00 8.84E+00 Cs-134 <1.27E+01 0.00E+00 1.27E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <1.22E+01 0.00E+00 1.22E+01 Ba-140 <5.21E+01 0.00E+00 5.21E+01 Total-Gam 0.00E+00 Sample ID: 442809 Sample Dates: 5/2/2017 - 5/2/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <1.21E+01 0.00E+00 1.21E+01 Fe-59 <1.94E+01 0.00E+00 1.94E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <4.04E+01 0.00E+00 4.04E+01 Zr-95 <2.72E+01 0.00E+00 2.72E+01 Nb-95 <1.64E+01 0.00E+00 1.64E+01 I-131 <1.10E+01 0.00E+00 1.10E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <8.40E+00 0.00E+00 8.40E+00 La-140 <3.98E+01 0.00E+00 3.98E+01 Ba-140 <3.58E+01 0.00E+00 3.58E+01 Total-Gam 0.00E+00 Sample ID: 443247 Sample Dates: 5/9/2017 - 5/9/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.62E+01 0.00E+00 1.62E+01 Co-58 <1.20E+01 0.00E+00 1.20E+01 Fe-59 <2.35E+01 0.00E+00 2.35E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Zr-95 <2.70E+01 0.00E+00 2.70E+01 Nb-95 <1.52E+01 0.00E+00 1.52E+01 I-131 <1.42E+01 0.00E+00 1.42E+01 Cs-134 <1.08E+01 0.00E+00 1.08E+01 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <1.68E+01 0.00E+00 1.68E+01 Ba-140 <5.18E+01 0.00E+00 5.18E+01 Total-Gam 0.00E+00 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 132 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1067 Sample Point 1067 [ INDICATOR - @ 0 miles ]

Sample ID: 443805 Sample Dates: 5/16/2017 - 5/16/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.06E+01 0.00E+00 1.06E+01 Co-58 <1.60E+01 0.00E+00 1.60E+01 Fe-59 <2.38E+01 0.00E+00 2.38E+01 Co-60 <1.54E+01 0.00E+00 1.54E+01 Zn-65 <3.74E+01 0.00E+00 3.74E+01 Zr-95 <2.30E+01 0.00E+00 2.30E+01 Nb-95 <1.84E+01 0.00E+00 1.84E+01 I-131 <1.72E+01 0.00E+00 1.72E+01 Cs-134 <9.73E+00 0.00E+00 9.73E+00 Cs-137 <1.19E+01 0.00E+00 1.19E+01 La-140 <2.25E+01 0.00E+00 2.25E+01 Ba-140 <5.08E+01 0.00E+00 5.08E+01 Total-Gam 0.00E+00 Sample ID: 444199 Sample Dates: 5/23/2017 - 5/23/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.54E+01 0.00E+00 1.54E+01 Co-58 <1.80E+01 0.00E+00 1.80E+01 Fe-59 <3.31E+01 0.00E+00 3.31E+01 Co-60 <8.09E+00 0.00E+00 8.09E+00 Zn-65 <2.74E+01 0.00E+00 2.74E+01 Zr-95 <1.66E+01 0.00E+00 1.66E+01 Nb-95 <1.28E+01 0.00E+00 1.28E+01 I-131 <4.61E+01 0.00E+00 4.61E+01 Cs-134 <1.09E+01 0.00E+00 1.09E+01 Cs-137 <1.68E+01 0.00E+00 1.68E+01 La-140 <2.43E+03 0.00E+00 2.43E+03 Ba-140 <7.76E+01 0.00E+00 7.76E+01 Total-Gam 0.00E+00 Sample ID: 445269 Sample Dates: 5/30/2017 - 5/30/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.64E+01 0.00E+00 1.64E+01 Co-58 <1.56E+01 0.00E+00 1.56E+01 Fe-59 <1.48E+01 0.00E+00 1.48E+01 Co-60 <1.26E+01 0.00E+00 1.26E+01 Zn-65 <3.79E+01 0.00E+00 3.79E+01 Zr-95 <3.25E+01 0.00E+00 3.25E+01 Nb-95 <1.57E+01 0.00E+00 1.57E+01 I-131 <2.14E+01 0.00E+00 2.14E+01 Cs-134 <1.28E+01 0.00E+00 1.28E+01 Cs-137 <1.46E+01 0.00E+00 1.46E+01 La-140 <1.80E+02 0.00E+00 1.80E+02 Ba-140 <8.83E+01 0.00E+00 8.83E+01 Total-Gam 0.00E+00 Sample ID: 446268 Sample Dates: 6/6/2017 - 6/6/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <6.11E+00 0.00E+00 6.11E+00 Co-58 <1.47E+01 0.00E+00 1.47E+01 Fe-59 <2.02E+01 0.00E+00 2.02E+01 Co-60 <8.05E+00 0.00E+00 8.05E+00 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.79E+01 0.00E+00 2.79E+01 Nb-95 <1.41E+01 0.00E+00 1.41E+01 I-131 <1.43E+01 0.00E+00 1.43E+01 Cs-134 <1.52E+01 0.00E+00 1.52E+01 Cs-137 <1.33E+01 0.00E+00 1.33E+01 La-140 <2.44E+01 0.00E+00 2.44E+01 Ba-140 <4.91E+01 0.00E+00 4.91E+01 Total-Gam 0.00E+00 Sample ID: 446772 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.50E+01 0.00E+00 1.50E+01 Co-58 <1.21E+01 0.00E+00 1.21E+01 Fe-59 <2.75E+01 0.00E+00 2.75E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 133 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1067 Sample Point 1067 [ INDICATOR - @ 0 miles ]

Sample ID: 446772 Sample Dates: 6/13/2017 - 6/13/2017 Nuclide Activity 2 Sigma Error MDA Zn-65 <3.06E+01 0.00E+00 3.06E+01 Zr-95 <2.06E+01 0.00E+00 2.06E+01 Nb-95 <1.17E+01 0.00E+00 1.17E+01 I-131 <1.60E+01 0.00E+00 1.60E+01 Cs-134 <9.73E+00 0.00E+00 9.73E+00 Cs-137 <8.40E+00 0.00E+00 8.40E+00 La-140 <1.76E+01 0.00E+00 1.76E+01 Ba-140 <4.81E+01 0.00E+00 4.81E+01 Total-Gam 0.00E+00 Sample ID: 447098 Sample Dates: 6/21/2017 - 6/21/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.70E+01 0.00E+00 1.70E+01 Fe-59 <2.35E+01 0.00E+00 2.35E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <2.15E+01 0.00E+00 2.15E+01 Zr-95 <2.50E+01 0.00E+00 2.50E+01 Nb-95 <1.72E+01 0.00E+00 1.72E+01 I-131 <1.62E+01 0.00E+00 1.62E+01 Cs-134 <1.38E+01 0.00E+00 1.38E+01 Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <2.05E+01 0.00E+00 2.05E+01 Ba-140 <4.57E+01 0.00E+00 4.57E+01 Total-Gam 0.00E+00 Sample ID: 447751 Sample Dates: 6/27/2017 - 6/27/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <1.34E+01 0.00E+00 1.34E+01 Fe-59 <2.02E+01 0.00E+00 2.02E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.50E+01 0.00E+00 2.50E+01 Nb-95 <2.14E+01 0.00E+00 2.14E+01 I-131 <1.29E+01 0.00E+00 1.29E+01 Cs-134 <1.54E+01 0.00E+00 1.54E+01 Cs-137 <1.57E+01 0.00E+00 1.57E+01 La-140 <1.15E+01 0.00E+00 1.15E+01 Ba-140 <5.96E+01 0.00E+00 5.96E+01 Total-Gam 0.00E+00 Sample ID: 448215 Sample Dates: 7/5/2017 - 7/5/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.22E+01 0.00E+00 1.22E+01 Co-58 <1.20E+01 0.00E+00 1.20E+01 Fe-59 <2.71E+01 0.00E+00 2.71E+01 Co-60 <8.91E+00 0.00E+00 8.91E+00 Zn-65 <2.64E+01 0.00E+00 2.64E+01 Zr-95 <2.04E+01 0.00E+00 2.04E+01 Nb-95 <1.40E+01 0.00E+00 1.40E+01 I-131 <1.12E+01 0.00E+00 1.12E+01 Cs-134 <6.80E+00 0.00E+00 6.80E+00 Cs-137 <1.57E+01 0.00E+00 1.57E+01 La-140 <2.09E+01 0.00E+00 2.09E+01 Ba-140 <4.58E+01 0.00E+00 4.58E+01 Total-Gam 0.00E+00 Sample ID: 448841 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.37E+01 0.00E+00 1.37E+01 Co-58 <1.35E+01 0.00E+00 1.35E+01 Fe-59 <2.04E+01 0.00E+00 2.04E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <1.53E+01 0.00E+00 1.53E+01 Zr-95 <2.18E+01 0.00E+00 2.18E+01 Nb-95 <1.65E+01 0.00E+00 1.65E+01 I-131 <1.51E+01 0.00E+00 1.51E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 134 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l 1067 Sample Point 1067 [ INDICATOR - @ 0 miles ]

Sample ID: 448841 Sample Dates: 7/11/2017 - 7/11/2017 Nuclide Activity 2 Sigma Error MDA Cs-134 <9.73E+00 0.00E+00 9.73E+00 Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <3.48E+01 0.00E+00 3.48E+01 Ba-140 <4.77E+01 0.00E+00 4.77E+01 Total-Gam 0.00E+00 Sample ID: 449154 Sample Dates: 7/18/2017 - 7/18/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.73E+01 0.00E+00 1.73E+01 Co-58 <1.82E+01 0.00E+00 1.82E+01 Fe-59 <3.07E+01 0.00E+00 3.07E+01 Co-60 <1.14E+01 0.00E+00 1.14E+01 Zn-65 <1.53E+01 0.00E+00 1.53E+01 Zr-95 <2.72E+01 0.00E+00 2.72E+01 Nb-95 <1.64E+01 0.00E+00 1.64E+01 I-131 <1.18E+01 0.00E+00 1.18E+01 Cs-134 <1.27E+01 0.00E+00 1.27E+01 Cs-137 <1.03E+01 0.00E+00 1.03E+01 La-140 <1.59E+01 0.00E+00 1.59E+01 Ba-140 <2.54E+01 0.00E+00 2.54E+01 Total-Gam 0.00E+00 Sample ID: 449891 Sample Dates: 7/25/2017 - 7/25/2017 Nuclide Activity 2 Sigma Error MDA Mn-54 <1.62E+01 0.00E+00 1.62E+01 Co-58 <1.60E+01 0.00E+00 1.60E+01 Fe-59 <2.75E+01 0.00E+00 2.75E+01 Co-60 <1.39E+01 0.00E+00 1.39E+01 Zn-65 <3.05E+01 0.00E+00 3.05E+01 Zr-95 <1.79E+01 0.00E+00 1.79E+01 Nb-95 <1.16E+01 0.00E+00 1.16E+01 I-131 <1.12E+01 0.00E+00 1.12E+01 Cs-134 <1.44E+01 0.00E+00 1.44E+01 Cs-137 <1.78E+01 0.00E+00 1.78E+01 La-140 <3.33E+01 0.00E+00 3.33E+01 Ba-140 <6.26E+01 0.00E+00 6.26E+01 Total-Gam 0.00E+00 Media Type: TLD Concentration (Activity): mR/Standard Quarter 1 Sample Point 1 [ INDICATOR - E @ 1.1 miles ] TLD RING TLD_INNER Sample ID: 437061 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 10.35 Sample ID: 444959 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 10.03 Sample ID: 451990 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 9.37 Sample ID: 464372 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 10.55 Sample Point 2 [ INDICATOR - ESE @ 0.9 miles ] TLD RING TLD_INNER Sample ID: 437071 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 10.02 Sample ID: 444969 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.15 Sample ID: 452000 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 7.67 Sample ID: 464382 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.82 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 135 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 3 Sample Point 3 [ INDICATOR - SE @ 0.9 miles ] TLD RING TLD_INNER Sample ID: 437082 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 10.63 Sample ID: 444980 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 11.08 Sample ID: 452011 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 9.36 Sample ID: 464393 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 10.44 Sample Point 4 [ INDICATOR - SSE @ 1.1 miles ] TLD RING TLD_INNER Sample ID: 437093 Sample Dates: 1/4/2017 - 4/4/2017 Nuclide Activity mR/Std Qtr 9.76 Sample ID: 444991 Sample Dates: 4/4/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.55 Sample ID: 452022 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 8.46 Sample ID: 464404 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.80 Sample Point 5 [ INDICATOR - S @ 1.1 miles ] TLD RING TLD_INNER Sample ID: 437095 Sample Dates: 1/4/2017 - 4/4/2017 Nuclide Activity mR/Std Qtr 11.32 Sample ID: 444993 Sample Dates: 4/4/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.61 Sample ID: 452024 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 7.36 Sample ID: 464406 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 12.04 Sample Point 6 [ INDICATOR - SSW @ 1.6 miles ] TLD RING TLD_INNER Sample ID: 437096 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 10.80 Sample ID: 444994 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 10.08 Sample ID: 452025 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 7.79 Sample ID: 464407 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.83 Sample Point 7 [ INDICATOR - SW @ 1.1 miles ] TLD RING TLD_INNER Sample ID: 437097 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 9.92 Sample ID: 444995 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 8.89 Sample ID: 452026 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 7.66 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 136 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 7 Sample Point 7 [ INDICATOR - SW @ 1.1 miles ] TLD RING TLD_INNER Sample ID: 464408 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.10 Sample Point 8 [ INDICATOR - W @ 1.2 miles ] TLD RING TLD_INNER Sample ID: 437103 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 10.77 Sample ID: 445001 Sample Dates: 4/2/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 8.59 Sample ID: 452032 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 7.18 Sample ID: 464414 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.76 Sample Point 9 [ INDICATOR - WNW @ 1 miles ] TLD RING TLD_INNER Sample ID: 437109 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 9.34 Sample ID: 445007 Sample Dates: 4/2/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 7.01 Sample ID: 452038 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 7.10 Sample ID: 464420 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 9.66 Sample Point 10 [ INDICATOR - NW @ 0.8 miles ] TLD RING TLD_INNER Sample ID: 437062 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 8.71 Sample ID: 444960 Sample Dates: 4/2/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 8.24 Sample ID: 451991 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 6.47 Sample ID: 464373 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.06 Sample Point 11 [ INDICATOR - NNW @ 0.9 miles ] TLD RING TLD_INNER Sample ID: 437063 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 10.22 Sample ID: 444961 Sample Dates: 4/2/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.32 Sample ID: 451992 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 9.24 Sample ID: 464374 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 12.70 Sample Point 12 [ INDICATOR - N @ 1.1 miles ] TLD RING TLD_INNER Sample ID: 437064 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 11.86 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 137 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 12 Sample Point 12 [ INDICATOR - N @ 1.1 miles ] TLD RING TLD_INNER Sample ID: 444962 Sample Dates: 4/2/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 10.03 Sample ID: 451993 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 9.35 Sample ID: 464375 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.53 Sample Point 13 [ INDICATOR - NNE @ 1.2 miles ] TLD RING TLD_INNER Sample ID: 437065 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 8.99 Sample ID: 444963 Sample Dates: 4/2/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 6.92 Sample ID: 451994 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 6.85 Sample ID: 464376 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 9.90 Sample Point 14 [ INDICATOR - NE @ 0.5 miles ] TLD RING TLD_INNER Sample ID: 437066 Sample Dates: 1/5/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 13.65 Sample ID: 444964 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.85 Sample ID: 451995 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 10.31 Sample ID: 464377 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 12.96 Sample Point 15 [ INDICATOR - ENE @ 0.9 miles ] TLD RING TLD_INNER Sample ID: 437067 Sample Dates: 1/5/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 12.27 Sample ID: 444965 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 11.67 Sample ID: 451996 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 9.65 Sample ID: 464378 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.92 Sample Point 16 [ INDICATOR - WSW @ 1 miles ] TLD RING TLD_INNER Sample ID: 437068 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 11.63 Sample ID: 444966 Sample Dates: 4/2/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 7.69 Sample ID: 451997 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 8.11 Sample ID: 464379 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.36 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 138 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 17 Sample Point 17 [ INDICATOR - ESE @ 1.4 miles ] TLD RING TLD_INNER Sample ID: 437069 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 12.47 Sample ID: 444967 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 11.61 Sample ID: 451998 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 9.10 Sample ID: 464380 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 13.07 Sample Point 18 [ INDICATOR - SE @ 1.7 miles ] TLD RING TLD_INNER Sample ID: 437070 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 10.01 Sample ID: 444968 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.03 Sample ID: 451999 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 8.19 Sample ID: 464381 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 12.53 Sample Point 20 [ INDICATOR - S @ 2.1 miles ] TLD RING TLD_INNER Sample ID: 437072 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 10.79 Sample ID: 444970 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 8.96 Sample ID: 452001 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 7.59 Sample ID: 464383 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 12.18 Sample Point 21 [ INDICATOR - SSW @ 2.9 miles ] TLD RING TLD_INNER Sample ID: 437073 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 14.40 Sample ID: 444971 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 12.13 Sample ID: 452002 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 10.11 Sample ID: 464384 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 14.58 Sample Point 22 [ INDICATOR - SW @ 5.3 miles ] TLD RING TLD_OUTER Sample ID: 437074 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 12.06 Sample ID: 444972 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.92 Sample ID: 464385 Sample Dates: 10/4/2017 - 1/9/2018 Nuclide Activity mR/Std Qtr 11.57 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 139 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 23 Sample Point 23 [ INDICATOR - WSW @ 4.6 miles ] TLD RING TLD_OUTER Sample ID: 437075 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 8.39 Sample ID: 444973 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 6.96 Sample ID: 452004 Sample Dates: 7/7/2017 - 10/4/2017 Nuclide Activity mR/Std Qtr 6.16 Sample ID: 464386 Sample Dates: 10/4/2017 - 1/9/2018 Nuclide Activity mR/Std Qtr 8.85 Sample Point 24 [ INDICATOR - W @ 3 miles ] TLD RING TLD_INNER Sample ID: 437076 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 16.30 Sample ID: 444974 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 13.65 Sample ID: 452005 Sample Dates: 7/7/2017 - 10/4/2017 Nuclide Activity mR/Std Qtr 12.89 Sample ID: 464387 Sample Dates: 10/4/2017 - 1/8/2018 Nuclide Activity mR/Std Qtr 15.66 Sample Point 25 [ INDICATOR - WNW @ 8.6 miles ] TLD RING TLD_OUTER Sample ID: 437077 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 9.91 Sample ID: 444975 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.12 Sample ID: 452006 Sample Dates: 7/7/2017 - 10/4/2017 Nuclide Activity mR/Std Qtr 8.47 Sample ID: 464388 Sample Dates: 10/4/2017 - 1/8/2018 Nuclide Activity mR/Std Qtr 13.10 Sample Point 26 [ INDICATOR - NW @ 5.9 miles ] TLD RING TLD_OUTER Sample ID: 437078 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 12.41 Sample ID: 444976 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 11.02 Sample ID: 452007 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 10.86 Sample ID: 464389 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 13.06 Sample Point 27 [ INDICATOR - NNW @ 5.1 miles ] TLD RING TLD_OUTER Sample ID: 437079 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 8.78 Sample ID: 444977 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 7.93 Sample ID: 452008 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 7.17 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 140 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 27 Sample Point 27 [ INDICATOR - NNW @ 5.1 miles ] TLD RING TLD_OUTER Sample ID: 464390 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.38 Sample Point 28 [ INDICATOR - NW @ 4.2 miles ] TLD RING TLD_OUTER Sample ID: 437080 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 9.90 Sample ID: 444978 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.10 Sample ID: 452009 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 6.77 Sample ID: 464391 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 10.60 Sample Point 29 [ INDICATOR - SSW @ 2.6 miles ] TLD RING TLD_INNER Sample ID: 437081 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 10.19 Sample ID: 444979 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 7.97 Sample ID: 452010 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 6.99 Sample ID: 464392 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 9.86 Sample Point 30 [ INDICATOR - NE @ 2 miles ] TLD RING TLD_INNER Sample ID: 437083 Sample Dates: 1/4/2017 - 4/4/2017 Nuclide Activity mR/Std Qtr 9.30 Sample ID: 452012 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 8.21 Sample ID: 464394 Sample Dates: 10/3/2017 - 1/10/2018 Nuclide Activity mR/Std Qtr 11.21 Sample Point 31 [ INDICATOR - ENE @ 2.5 miles ] TLD RING TLD_INNER Sample ID: 437084 Sample Dates: 1/4/2017 - 4/4/2017 Nuclide Activity mR/Std Qtr 11.88 Sample ID: 444982 Sample Dates: 4/4/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 11.61 Sample ID: 452013 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 10.14 Sample ID: 464395 Sample Dates: 10/3/2017 - 1/10/2018 Nuclide Activity mR/Std Qtr 13.02 Sample Point 32 [ INDICATOR - ENE @ 5.8 miles ] TLD RING TLD_OUTER Sample ID: 437085 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 11.74 Sample ID: 444983 Sample Dates: 4/2/2017 - 7/6/2017 Nuclide Activity mR/Std Qtr 10.05 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 141 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 32 Sample Point 32 [ INDICATOR - ENE @ 5.8 miles ] TLD RING TLD_OUTER Sample ID: 452014 Sample Dates: 7/6/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 10.26 Sample ID: 464396 Sample Dates: 10/3/2017 - 1/7/2018 Nuclide Activity mR/Std Qtr 12.59 Sample Point 33 [ INDICATOR - E @ 4.1 miles ] TLD RING TLD_OUTER Sample ID: 437086 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 8.84 Sample ID: 444984 Sample Dates: 4/2/2017 - 7/6/2017 Nuclide Activity mR/Std Qtr 7.76 Sample ID: 452015 Sample Dates: 7/6/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 7.05 Sample ID: 464397 Sample Dates: 10/3/2017 - 1/7/2018 Nuclide Activity mR/Std Qtr 12.12 Sample Point 34 [ INDICATOR - E @ 5.4 miles ] TLD RING TLD_OUTER Sample ID: 437087 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 9.08 Sample ID: 444985 Sample Dates: 4/2/2017 - 7/6/2017 Nuclide Activity mR/Std Qtr 8.73 Sample ID: 452016 Sample Dates: 7/6/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 7.49 Sample ID: 464398 Sample Dates: 10/3/2017 - 1/7/2018 Nuclide Activity mR/Std Qtr 11.08 Sample Point 35 [ INDICATOR - SSE @ 7.3 miles ] TLD RING TLD_OUTER Sample ID: 437088 Sample Dates: 1/5/2017 - 4/4/2017 Nuclide Activity mR/Std Qtr 8.81 Sample ID: 444986 Sample Dates: 4/4/2017 - 7/6/2017 Nuclide Activity mR/Std Qtr 7.30 Sample ID: 452017 Sample Dates: 7/6/2017 - 10/5/2017 Nuclide Activity mR/Std Qtr 5.71 Sample ID: 464399 Sample Dates: 10/5/2017 - 1/8/2018 Nuclide Activity mR/Std Qtr 10.73 Sample Point 36 [ INDICATOR - NE @ 8.9 miles ] TLD RING TLD_OUTER Sample ID: 437089 Sample Dates: 1/5/2017 - 4/2/2017 Nuclide Activity mR/Std Qtr 10.63 Sample ID: 444987 Sample Dates: 4/2/2017 - 7/6/2017 Nuclide Activity mR/Std Qtr 8.73 Sample ID: 452018 Sample Dates: 7/6/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 7.81 Sample ID: 464400 Sample Dates: 10/3/2017 - 1/7/2018 Nuclide Activity mR/Std Qtr 10.10 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 142 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 37 Sample Point 37 [ INDICATOR - NW @ 5.5 miles ] TLD RING TLD_OUTER Sample ID: 437090 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 8.21 Sample ID: 444988 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 8.65 Sample ID: 452019 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 5.60 Sample ID: 464401 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.89 Sample Point 38 [ INDICATOR - W @ 11 miles ] TLD RING TLD_OUTER Sample ID: 437091 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 11.68 Sample ID: 444989 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 8.93 Sample ID: 452020 Sample Dates: 7/7/2017 - 10/4/2017 Nuclide Activity mR/Std Qtr 8.68 Sample ID: 464402 Sample Dates: 10/4/2017 - 1/8/2018 Nuclide Activity mR/Std Qtr 9.98 Sample Point 39 [ INDICATOR - SW @ 5.3 miles ] TLD RING TLD_OUTER Sample ID: 437092 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 16.42 Sample ID: 444990 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 12.87 Sample ID: 452021 Sample Dates: 7/7/2017 - 10/4/2017 Nuclide Activity mR/Std Qtr 11.75 Sample ID: 464403 Sample Dates: 10/4/2017 - 1/9/2018 Nuclide Activity mR/Std Qtr 15.19 Sample Point 40 [ INDICATOR - WSW @ 6.9 miles ] TLD RING TLD_OUTER Sample ID: 437094 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 15.19 Sample ID: 444992 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 11.26 Sample ID: 452023 Sample Dates: 7/7/2017 - 10/4/2017 Nuclide Activity mR/Std Qtr 9.53 Sample ID: 464405 Sample Dates: 10/4/2017 - 1/9/2018 Nuclide Activity mR/Std Qtr 15.99 Sample Point 75 [ INDICATOR - S @ 4.7 miles ] TLD RING TLD_OUTER Sample ID: 437098 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 11.14 Sample ID: 444996 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.56 Sample ID: 452027 Sample Dates: 7/7/2017 - 10/4/2017 Nuclide Activity mR/Std Qtr 8.40 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 143 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 75 Sample Point 75 [ INDICATOR - S @ 4.7 miles ] TLD RING TLD_OUTER Sample ID: 464409 Sample Dates: 10/4/2017 - 1/9/2018 Nuclide Activity mR/Std Qtr 11.90 Sample Point 76 [ INDICATOR - SSW @ 4.8 miles ] TLD RING TLD_OUTER Sample ID: 437099 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 13.37 Sample ID: 444997 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 11.43 Sample ID: 464410 Sample Dates: 10/4/2017 - 1/9/2018 Nuclide Activity mR/Std Qtr 12.45 Sample Point 77 [ INDICATOR - S @ 5.4 miles ] TLD RING TLD_OUTER Sample ID: 437100 Sample Dates: 1/5/2017 - 4/4/2017 Nuclide Activity mR/Std Qtr 8.39 Sample ID: 444998 Sample Dates: 4/4/2017 - 7/6/2017 Nuclide Activity mR/Std Qtr 7.70 Sample ID: 452029 Sample Dates: 7/6/2017 - 10/5/2017 Nuclide Activity mR/Std Qtr 6.87 Sample ID: 464411 Sample Dates: 10/5/2017 - 1/8/2018 Nuclide Activity mR/Std Qtr 8.33 Sample Point 78 [ INDICATOR - NNE @ 9.9 miles ] TLD RING TLD_OUTER Sample ID: 437101 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 10.24 Sample ID: 444999 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 8.29 Sample ID: 452030 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 6.44 Sample ID: 464412 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 9.83 Sample Point 79 [ INDICATOR - N @ 9.5 miles ] TLD RING TLD_OUTER Sample ID: 437102 Sample Dates: 1/4/2017 - 4/5/2017 Nuclide Activity mR/Std Qtr 11.44 Sample ID: 445000 Sample Dates: 4/5/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 9.89 Sample ID: 452031 Sample Dates: 7/7/2017 - 10/3/2017 Nuclide Activity mR/Std Qtr 7.62 Sample ID: 464413 Sample Dates: 10/3/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 11.62 Sample Point 81 [ CONTROL - WNW @ 9.9 miles ] TLD RING TLD_CTRL Sample ID: 437104 Sample Dates: 1/4/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 11.70 Sample ID: 445002 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 10.32 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 144 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter 81 Sample Point 81 [ CONTROL - WNW @ 9.9 miles ] TLD RING TLD_CTRL Sample ID: 452033 Sample Dates: 7/7/2017 - 10/4/2017 Nuclide Activity mR/Std Qtr 9.20 Sample ID: 464415 Sample Dates: 10/4/2017 - 1/8/2018 Nuclide Activity mR/Std Qtr 12.02 Sample Point 82 [ INDICATOR - NNE @ 0.17 miles ] TLD RING NOT_APPLIC Sample ID: 437105 Sample Dates: 1/5/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 23.68 Sample ID: 445003 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 23.19 Sample ID: 452034 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 23.58 Sample ID: 464416 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 29.04 Sample Point 83 [ INDICATOR - NE @ 0.27 miles ] TLD RING NOT_APPLIC Sample ID: 437106 Sample Dates: 1/5/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 25.19 Sample ID: 445004 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 22.70 Sample ID: 452035 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 24.18 Sample ID: 464417 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 25.15 Sample Point 84 [ INDICATOR - NE @ 0.27 miles ] TLD RING NOT_APPLIC Sample ID: 437107 Sample Dates: 1/5/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 20.04 Sample ID: 445005 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 19.11 Sample ID: 452036 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 16.72 Sample ID: 464418 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 18.10 Sample Point 85 [ INDICATOR - ENE @ 0.09 miles ] TLD RING NOT_APPLIC Sample ID: 437108 Sample Dates: 1/5/2017 - 4/3/2017 Nuclide Activity mR/Std Qtr 27.78 Sample ID: 445006 Sample Dates: 4/3/2017 - 7/7/2017 Nuclide Activity mR/Std Qtr 24.87 Sample ID: 452037 Sample Dates: 7/7/2017 - 10/2/2017 Nuclide Activity mR/Std Qtr 25.83 Sample ID: 464419 Sample Dates: 10/2/2017 - 1/3/2018 Nuclide Activity mR/Std Qtr 24.27 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 145 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 800 Sample Point 800 [ INDICATOR - NE @ 0.7 miles ]

Sample ID: 433079 Sample Dates: 1/3/2017 - 1/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <3.45E+01 0.00E+00 3.45E+01 Co-58 <3.64E+01 0.00E+00 3.64E+01 Fe-59 <6.29E+01 0.00E+00 6.29E+01 Co-60 <4.01E+01 0.00E+00 4.01E+01 Zn-65 <6.27E+01 0.00E+00 6.27E+01 Zr-95 <6.30E+01 0.00E+00 6.30E+01 Nb-95 <3.34E+01 0.00E+00 3.34E+01 I-131 <3.47E+01 0.00E+00 3.47E+01 Cs-134 <4.49E+01 0.00E+00 4.49E+01 Cs-137 <3.88E+01 0.00E+00 3.88E+01 BaLa-140 <3.29E+01 0.00E+00 3.29E+01 Be-7 2.20E+03 4.88E+02 4.91E+02 K-40 1.67E+03 4.92E+02 9.08E+01 Sample ID: 435537 Sample Dates: 2/1/2017 - 2/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.24E+01 0.00E+00 2.24E+01 Co-58 <2.10E+01 0.00E+00 2.10E+01 Fe-59 <5.54E+01 0.00E+00 5.54E+01 Co-60 <2.91E+01 0.00E+00 2.91E+01 Zn-65 <5.97E+01 0.00E+00 5.97E+01 Zr-95 <4.38E+01 0.00E+00 4.38E+01 Nb-95 <1.76E+01 0.00E+00 1.76E+01 I-131 <2.26E+01 0.00E+00 2.26E+01 Cs-134 <3.19E+01 0.00E+00 3.19E+01 Cs-137 <2.57E+01 0.00E+00 2.57E+01 BaLa-140 <1.93E+01 0.00E+00 1.93E+01 Be-7 1.44E+03 2.96E+02 2.64E+02 K-40 2.36E+03 5.22E+02 3.86E+02 Sample ID: 438089 Sample Dates: 3/1/2017 - 3/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <3.09E+01 0.00E+00 3.09E+01 Co-58 <3.15E+01 0.00E+00 3.15E+01 Fe-59 <6.32E+01 0.00E+00 6.32E+01 Co-60 <3.86E+01 0.00E+00 3.86E+01 Zn-65 <5.91E+01 0.00E+00 5.91E+01 Zr-95 <5.46E+01 0.00E+00 5.46E+01 Nb-95 <3.14E+01 0.00E+00 3.14E+01 I-131 <4.77E+01 0.00E+00 4.77E+01 Cs-134 <3.30E+01 0.00E+00 3.30E+01 Cs-137 <2.97E+01 0.00E+00 2.97E+01 BaLa-140 <5.28E+01 0.00E+00 5.28E+01 Be-7 1.67E+03 3.79E+02 3.87E+02 K-40 2.17E+03 5.72E+02 5.15E+02 Sample ID: 440771 Sample Dates: 4/1/2017 - 4/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.20E+01 0.00E+00 2.20E+01 Co-58 <2.22E+01 0.00E+00 2.22E+01 Fe-59 <5.40E+01 0.00E+00 5.40E+01 Co-60 <2.41E+01 0.00E+00 2.41E+01 Zn-65 <3.27E+01 0.00E+00 3.27E+01 Zr-95 <4.05E+01 0.00E+00 4.05E+01 Nb-95 <2.08E+01 0.00E+00 2.08E+01 I-131 <2.50E+01 0.00E+00 2.50E+01 Cs-134 <2.46E+01 0.00E+00 2.46E+01 Cs-137 <2.12E+01 0.00E+00 2.12E+01 BaLa-140 <2.76E+01 0.00E+00 2.76E+01 Be-7 3.20E+03 4.62E+02 2.72E+02 K-40 2.23E+03 4.92E+02 3.32E+02 Sample ID: 443047 Sample Dates: 5/1/2017 - 5/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.59E+01 0.00E+00 2.59E+01 Co-58 <2.71E+01 0.00E+00 2.71E+01 Fe-59 <4.50E+01 0.00E+00 4.50E+01 Co-60 <2.59E+01 0.00E+00 2.59E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 146 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 800 Sample Point 800 [ INDICATOR - NE @ 0.7 miles ]

Sample ID: 443047 Sample Dates: 5/1/2017 - 5/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Zn-65 <5.32E+01 0.00E+00 5.32E+01 Zr-95 <5.53E+01 0.00E+00 5.53E+01 Nb-95 <2.62E+01 0.00E+00 2.62E+01 I-131 <2.70E+01 0.00E+00 2.70E+01 Cs-134 <2.19E+01 0.00E+00 2.19E+01 Cs-137 <2.51E+01 0.00E+00 2.51E+01 BaLa-140 <2.82E+01 0.00E+00 2.82E+01 Be-7 1.74E+03 3.44E+02 3.13E+02 K-40 3.51E+03 6.32E+02 2.64E+02 Sample ID: 444229 Sample Dates: 6/1/2017 - 6/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.12E+01 0.00E+00 2.12E+01 Co-58 <2.04E+01 0.00E+00 2.04E+01 Fe-59 <5.07E+01 0.00E+00 5.07E+01 Co-60 <3.05E+01 0.00E+00 3.05E+01 Zn-65 <4.70E+01 0.00E+00 4.70E+01 Zr-95 <3.29E+01 0.00E+00 3.29E+01 Nb-95 <2.31E+01 0.00E+00 2.31E+01 I-131 <3.07E+01 0.00E+00 3.07E+01 Cs-134 <2.50E+01 0.00E+00 2.50E+01 Cs-137 <2.25E+01 0.00E+00 2.25E+01 BaLa-140 <3.09E+01 0.00E+00 3.09E+01 Be-7 8.07E+02 2.27E+02 2.38E+02 K-40 2.97E+03 5.86E+02 3.89E+02 Sample ID: 447135 Sample Dates: 7/5/2017 - 7/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.52E+01 0.00E+00 2.52E+01 Co-58 <1.77E+01 0.00E+00 1.77E+01 Fe-59 <4.48E+01 0.00E+00 4.48E+01 Co-60 <3.13E+01 0.00E+00 3.13E+01 Zn-65 <5.17E+01 0.00E+00 5.17E+01 Zr-95 <3.84E+01 0.00E+00 3.84E+01 Nb-95 <2.96E+01 0.00E+00 2.96E+01 I-131 <3.22E+01 0.00E+00 3.22E+01 Cs-134 <2.69E+01 0.00E+00 2.69E+01 Cs-137 <2.42E+01 0.00E+00 2.42E+01 BaLa-140 <3.90E+01 0.00E+00 3.90E+01 Be-7 1.02E+03 2.82E+02 3.27E+02 K-40 3.36E+03 6.29E+02 3.99E+02 Sample ID: 449187 Sample Dates: 8/2/2017 - 8/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <1.82E+01 0.00E+00 1.82E+01 Co-58 <1.91E+01 0.00E+00 1.91E+01 Fe-59 <4.43E+01 0.00E+00 4.43E+01 Co-60 <2.02E+01 0.00E+00 2.02E+01 Zn-65 <4.35E+01 0.00E+00 4.35E+01 Zr-95 <3.13E+01 0.00E+00 3.13E+01 Nb-95 <1.74E+01 0.00E+00 1.74E+01 I-131 <2.52E+01 0.00E+00 2.52E+01 Cs-134 <1.91E+01 0.00E+00 1.91E+01 Cs-137 <1.81E+01 0.00E+00 1.81E+01 BaLa-140 <2.14E+01 0.00E+00 2.14E+01 Be-7 1.35E+03 2.55E+02 2.47E+02 K-40 2.61E+03 4.40E+02 2.46E+02 Sample ID: 451155 Sample Dates: 9/5/2017 - 9/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.52E+01 0.00E+00 2.52E+01 Co-58 <2.05E+01 0.00E+00 2.05E+01 Fe-59 <4.42E+01 0.00E+00 4.42E+01 Co-60 <3.63E+01 0.00E+00 3.63E+01 Zn-65 <4.62E+01 0.00E+00 4.62E+01 Zr-95 <5.49E+01 0.00E+00 5.49E+01 Nb-95 <3.01E+01 0.00E+00 3.01E+01 I-131 <3.52E+01 0.00E+00 3.52E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 147 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 800 Sample Point 800 [ INDICATOR - NE @ 0.7 miles ]

Sample ID: 451155 Sample Dates: 9/5/2017 - 9/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Cs-134 <3.06E+01 0.00E+00 3.06E+01 Cs-137 <3.09E+01 0.00E+00 3.09E+01 BaLa-140 <4.08E+01 0.00E+00 4.08E+01 Be-7 1.77E+03 3.46E+02 2.86E+02 K-40 2.86E+03 5.95E+02 4.38E+02 Sample ID: 453410 Sample Dates: 10/2/2017 - 10/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <3.13E+01 0.00E+00 3.13E+01 Co-58 <2.60E+01 0.00E+00 2.60E+01 Fe-59 <3.32E+01 0.00E+00 3.32E+01 Co-60 <2.95E+01 0.00E+00 2.95E+01 Zn-65 <8.17E+01 0.00E+00 8.17E+01 Zr-95 <4.71E+01 0.00E+00 4.71E+01 Nb-95 <2.42E+01 0.00E+00 2.42E+01 I-131 <3.13E+01 0.00E+00 3.13E+01 Cs-134 <3.16E+01 0.00E+00 3.16E+01 Cs-137 <2.50E+01 0.00E+00 2.50E+01 BaLa-140 <2.32E+01 0.00E+00 2.32E+01 Be-7 9.44E+02 2.57E+02 2.73E+02 K-40 3.31E+03 6.21E+02 2.67E+02 Sample ID: 456008 Sample Dates: 11/2/2017 - 11/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <1.44E+01 0.00E+00 1.44E+01 Co-58 <1.27E+01 0.00E+00 1.27E+01 Fe-59 <2.60E+01 0.00E+00 2.60E+01 Co-60 <1.41E+01 0.00E+00 1.41E+01 Zn-65 <2.84E+01 0.00E+00 2.84E+01 Zr-95 <2.60E+01 0.00E+00 2.60E+01 Nb-95 <1.65E+01 0.00E+00 1.65E+01 I-131 <3.02E+01 0.00E+00 3.02E+01 Cs-134 <1.54E+01 0.00E+00 1.54E+01 Cs-137 <1.42E+01 0.00E+00 1.42E+01 BaLa-140 <2.96E+01 0.00E+00 2.96E+01 Be-7 1.50E+03 2.00E+02 2.08E+02 K-40 2.81E+03 3.26E+02 2.45E+02 Sample ID: 463058 Sample Dates: 12/3/2017 - 12/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.46E+01 0.00E+00 2.46E+01 Co-58 <2.43E+01 0.00E+00 2.43E+01 Fe-59 <5.11E+01 0.00E+00 5.11E+01 Co-60 <3.01E+01 0.00E+00 3.01E+01 Zn-65 <5.80E+01 0.00E+00 5.80E+01 Zr-95 <4.31E+01 0.00E+00 4.31E+01 Nb-95 <3.35E+01 0.00E+00 3.35E+01 I-131 <4.54E+01 0.00E+00 4.54E+01 Cs-134 <2.90E+01 0.00E+00 2.90E+01 Cs-137 <2.21E+01 0.00E+00 2.21E+01 BaLa-140 <5.24E+01 0.00E+00 5.24E+01 Be-7 1.97E+03 3.20E+02 3.00E+02 K-40 2.50E+03 4.83E+02 4.78E+02 Sample Point 801 [ INDICATOR - SW @ 0.8 miles ]

Sample ID: 433080 Sample Dates: 1/3/2017 - 1/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.35E+01 0.00E+00 2.35E+01 Co-58 <3.24E+01 0.00E+00 3.24E+01 Fe-59 <5.37E+01 0.00E+00 5.37E+01 Co-60 <4.15E+01 0.00E+00 4.15E+01 Zn-65 <6.85E+01 0.00E+00 6.85E+01 Zr-95 <5.39E+01 0.00E+00 5.39E+01 Nb-95 <3.15E+01 0.00E+00 3.15E+01 I-131 <3.63E+01 0.00E+00 3.63E+01 Cs-134 <4.17E+01 0.00E+00 4.17E+01 Cs-137 <2.76E+01 0.00E+00 2.76E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 148 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 801 Sample Point 801 [ INDICATOR - SW @ 0.8 miles ]

Sample ID: 433080 Sample Dates: 1/3/2017 - 1/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA BaLa-140 <4.58E+01 0.00E+00 4.58E+01 Be-7 1.41E+03 3.73E+02 4.36E+02 K-40 1.69E+03 4.89E+02 4.14E+02 Sample ID: 435538 Sample Dates: 2/1/2017 - 2/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <1.83E+01 0.00E+00 1.83E+01 Co-58 <1.81E+01 0.00E+00 1.81E+01 Fe-59 <4.43E+01 0.00E+00 4.43E+01 Co-60 <1.89E+01 0.00E+00 1.89E+01 Zn-65 <5.31E+01 0.00E+00 5.31E+01 Zr-95 <4.16E+01 0.00E+00 4.16E+01 Nb-95 <1.74E+01 0.00E+00 1.74E+01 I-131 <2.34E+01 0.00E+00 2.34E+01 Cs-134 <1.69E+01 0.00E+00 1.69E+01 Cs-137 <2.64E+01 0.00E+00 2.64E+01 BaLa-140 <3.11E+01 0.00E+00 3.11E+01 Be-7 2.95E+03 4.41E+02 2.83E+02 K-40 2.37E+03 5.03E+02 3.06E+02 Sample ID: 438090 Sample Dates: 3/1/2017 - 3/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <3.20E+01 0.00E+00 3.20E+01 Co-58 <3.49E+01 0.00E+00 3.49E+01 Fe-59 <6.39E+01 0.00E+00 6.39E+01 Co-60 <2.96E+01 0.00E+00 2.96E+01 Zn-65 <5.67E+01 0.00E+00 5.67E+01 Zr-95 <4.25E+01 0.00E+00 4.25E+01 Nb-95 <3.80E+01 0.00E+00 3.80E+01 I-131 <3.26E+01 0.00E+00 3.26E+01 Cs-134 <2.86E+01 0.00E+00 2.86E+01 Cs-137 <1.76E+01 0.00E+00 1.76E+01 BaLa-140 <2.83E+01 0.00E+00 2.83E+01 Be-7 1.59E+03 3.29E+02 2.59E+02 K-40 2.71E+03 5.86E+02 3.47E+02 Sample ID: 440772 Sample Dates: 4/1/2017 - 4/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.44E+01 0.00E+00 2.44E+01 Co-58 <1.97E+01 0.00E+00 1.97E+01 Fe-59 <4.55E+01 0.00E+00 4.55E+01 Co-60 <4.27E+01 0.00E+00 4.27E+01 Zn-65 <6.87E+01 0.00E+00 6.87E+01 Zr-95 <5.36E+01 0.00E+00 5.36E+01 Nb-95 <3.05E+01 0.00E+00 3.05E+01 I-131 <3.27E+01 0.00E+00 3.27E+01 Cs-134 <2.88E+01 0.00E+00 2.88E+01 Cs-137 <2.73E+01 0.00E+00 2.73E+01 BaLa-140 <4.17E+01 0.00E+00 4.17E+01 Be-7 1.71E+03 3.46E+02 2.94E+02 K-40 2.35E+03 5.30E+02 3.10E+02 Sample ID: 443048 Sample Dates: 5/1/2017 - 5/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.89E+01 0.00E+00 2.89E+01 Co-58 <3.01E+01 0.00E+00 3.01E+01 Fe-59 <5.50E+01 0.00E+00 5.50E+01 Co-60 <3.46E+01 0.00E+00 3.46E+01 Zn-65 <5.29E+01 0.00E+00 5.29E+01 Zr-95 <4.40E+01 0.00E+00 4.40E+01 Nb-95 <2.35E+01 0.00E+00 2.35E+01 I-131 <2.95E+01 0.00E+00 2.95E+01 Cs-134 <2.97E+01 0.00E+00 2.97E+01 Cs-137 <3.00E+01 0.00E+00 3.00E+01 BaLa-140 <8.75E+00 0.00E+00 8.75E+00 Be-7 <3.13E+02 0.00E+00 3.13E+02 K-40 3.49E+03 6.72E+02 4.38E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 149 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 801 Sample Point 801 [ INDICATOR - SW @ 0.8 miles ]

Sample ID: 444230 Sample Dates: 6/1/2017 - 6/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.28E+01 0.00E+00 2.28E+01 Co-58 <2.20E+01 0.00E+00 2.20E+01 Fe-59 <3.92E+01 0.00E+00 3.92E+01 Co-60 <2.87E+01 0.00E+00 2.87E+01 Zn-65 <4.63E+01 0.00E+00 4.63E+01 Zr-95 <4.30E+01 0.00E+00 4.30E+01 Nb-95 <2.74E+01 0.00E+00 2.74E+01 I-131 <3.43E+01 0.00E+00 3.43E+01 Cs-134 <2.82E+01 0.00E+00 2.82E+01 Cs-137 <2.74E+01 0.00E+00 2.74E+01 BaLa-140 <2.66E+01 0.00E+00 2.66E+01 Be-7 1.55E+03 3.22E+02 2.82E+02 K-40 3.16E+03 6.29E+02 4.41E+02 Sample ID: 447136 Sample Dates: 7/5/2017 - 7/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <3.01E+01 0.00E+00 3.01E+01 Co-58 <2.93E+01 0.00E+00 2.93E+01 Fe-59 <5.76E+01 0.00E+00 5.76E+01 Co-60 <3.00E+01 0.00E+00 3.00E+01 Zn-65 <6.59E+01 0.00E+00 6.59E+01 Zr-95 <3.67E+01 0.00E+00 3.67E+01 Nb-95 <3.31E+01 0.00E+00 3.31E+01 I-131 <3.37E+01 0.00E+00 3.37E+01 Cs-134 <2.32E+01 0.00E+00 2.32E+01 Cs-137 <2.34E+01 0.00E+00 2.34E+01 BaLa-140 <4.67E+01 0.00E+00 4.67E+01 Be-7 1.05E+03 3.10E+02 3.64E+02 K-40 2.65E+03 5.77E+02 2.96E+02 Sample ID: 449188 Sample Dates: 8/2/2017 - 8/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.25E+01 0.00E+00 2.25E+01 Co-58 <2.42E+01 0.00E+00 2.42E+01 Fe-59 <6.17E+01 0.00E+00 6.17E+01 Co-60 <1.59E+01 0.00E+00 1.59E+01 Zn-65 <4.98E+01 0.00E+00 4.98E+01 Zr-95 <5.49E+01 0.00E+00 5.49E+01 Nb-95 <3.34E+01 0.00E+00 3.34E+01 I-131 <3.74E+01 0.00E+00 3.74E+01 Cs-134 <3.15E+01 0.00E+00 3.15E+01 Cs-137 <2.71E+01 0.00E+00 2.71E+01 BaLa-140 <3.65E+01 0.00E+00 3.65E+01 Be-7 1.45E+03 3.27E+02 3.36E+02 K-40 2.75E+03 6.04E+02 5.17E+02 Sample ID: 451156 Sample Dates: 9/5/2017 - 9/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.58E+01 0.00E+00 2.58E+01 Co-58 <2.97E+01 0.00E+00 2.97E+01 Fe-59 <3.08E+01 0.00E+00 3.08E+01 Co-60 <4.33E+01 0.00E+00 4.33E+01 Zn-65 <7.63E+01 0.00E+00 7.63E+01 Zr-95 <5.40E+01 0.00E+00 5.40E+01 Nb-95 <3.30E+01 0.00E+00 3.30E+01 I-131 <4.42E+01 0.00E+00 4.42E+01 Cs-134 <3.48E+01 0.00E+00 3.48E+01 Cs-137 <2.33E+01 0.00E+00 2.33E+01 BaLa-140 <5.22E+01 0.00E+00 5.22E+01 Be-7 1.96E+03 4.02E+02 3.71E+02 K-40 2.48E+03 5.89E+02 4.72E+02 Sample ID: 453411 Sample Dates: 10/2/2017 - 10/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.37E+01 0.00E+00 2.37E+01 Co-58 <2.38E+01 0.00E+00 2.38E+01 Fe-59 <4.31E+01 0.00E+00 4.31E+01 Co-60 <2.22E+01 0.00E+00 2.22E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 150 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 801 Sample Point 801 [ INDICATOR - SW @ 0.8 miles ]

Sample ID: 453411 Sample Dates: 10/2/2017 - 10/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Zn-65 <5.10E+01 0.00E+00 5.10E+01 Zr-95 <2.98E+01 0.00E+00 2.98E+01 Nb-95 <2.22E+01 0.00E+00 2.22E+01 I-131 <2.51E+01 0.00E+00 2.51E+01 Cs-134 <3.21E+01 0.00E+00 3.21E+01 Cs-137 <2.18E+01 0.00E+00 2.18E+01 BaLa-140 <3.49E+01 0.00E+00 3.49E+01 Be-7 2.32E+03 3.77E+02 2.42E+02 K-40 2.55E+03 5.53E+02 4.27E+02 Sample ID: 456009 Sample Dates: 11/2/2017 - 11/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.27E+01 0.00E+00 2.27E+01 Co-58 <2.31E+01 0.00E+00 2.31E+01 Fe-59 <4.70E+01 0.00E+00 4.70E+01 Co-60 <2.29E+01 0.00E+00 2.29E+01 Zn-65 <4.61E+01 0.00E+00 4.61E+01 Zr-95 <3.73E+01 0.00E+00 3.73E+01 Nb-95 <2.43E+01 0.00E+00 2.43E+01 I-131 <4.69E+01 0.00E+00 4.69E+01 Cs-134 <2.37E+01 0.00E+00 2.37E+01 Cs-137 <1.42E+01 0.00E+00 1.42E+01 BaLa-140 <4.13E+01 0.00E+00 4.13E+01 Be-7 2.08E+03 2.86E+02 2.68E+02 K-40 3.06E+03 4.27E+02 3.56E+02 Sample ID: 463059 Sample Dates: 12/3/2017 - 12/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.26E+01 0.00E+00 2.26E+01 Co-58 <2.45E+01 0.00E+00 2.45E+01 Fe-59 <5.44E+01 0.00E+00 5.44E+01 Co-60 <2.33E+01 0.00E+00 2.33E+01 Zn-65 <5.45E+01 0.00E+00 5.45E+01 Zr-95 <4.72E+01 0.00E+00 4.72E+01 Nb-95 <2.82E+01 0.00E+00 2.82E+01 I-131 <4.68E+01 0.00E+00 4.68E+01 Cs-134 <2.38E+01 0.00E+00 2.38E+01 Cs-137 <2.91E+01 0.00E+00 2.91E+01 BaLa-140 <3.88E+01 0.00E+00 3.88E+01 Be-7 1.86E+03 2.51E+02 2.46E+02 K-40 3.85E+03 5.35E+02 4.12E+02 Sample Point 802 [ CONTROL - -- @ 10.1 miles ]

Sample ID: 433081 Sample Dates: 1/3/2017 - 1/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.44E+01 0.00E+00 2.44E+01 Co-58 <2.06E+01 0.00E+00 2.06E+01 Fe-59 <4.39E+01 0.00E+00 4.39E+01 Co-60 <1.99E+01 0.00E+00 1.99E+01 Zn-65 <6.77E+01 0.00E+00 6.77E+01 Zr-95 <3.32E+01 0.00E+00 3.32E+01 Nb-95 <2.00E+01 0.00E+00 2.00E+01 I-131 <2.59E+01 0.00E+00 2.59E+01 Cs-134 <2.87E+01 0.00E+00 2.87E+01 Cs-137 <2.86E+01 0.00E+00 2.86E+01 BaLa-140 <3.08E+01 0.00E+00 3.08E+01 Be-7 2.82E+03 4.36E+02 2.91E+02 K-40 9.62E+02 3.86E+02 4.62E+02 Sample ID: 435539 Sample Dates: 2/1/2017 - 2/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <1.66E+01 0.00E+00 1.66E+01 Co-58 <1.80E+01 0.00E+00 1.80E+01 Fe-59 <4.39E+01 0.00E+00 4.39E+01 Co-60 <2.64E+01 0.00E+00 2.64E+01 Zn-65 <5.26E+01 0.00E+00 5.26E+01 Zr-95 <3.95E+01 0.00E+00 3.95E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 151 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 802 Sample Point 802 [ CONTROL - -- @ 10.1 miles ]

Sample ID: 435539 Sample Dates: 2/1/2017 - 2/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Nb-95 <2.88E+01 0.00E+00 2.88E+01 I-131 <2.08E+01 0.00E+00 2.08E+01 Cs-134 <2.71E+01 0.00E+00 2.71E+01 Cs-137 <2.70E+01 0.00E+00 2.70E+01 BaLa-140 <2.75E+01 0.00E+00 2.75E+01 Be-7 4.00E+03 5.29E+02 2.80E+02 K-40 1.32E+03 4.11E+02 4.26E+02 Sample ID: 438091 Sample Dates: 3/1/2017 - 3/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <3.04E+01 0.00E+00 3.04E+01 Co-58 <2.62E+01 0.00E+00 2.62E+01 Fe-59 <5.66E+01 0.00E+00 5.66E+01 Co-60 <3.71E+01 0.00E+00 3.71E+01 Zn-65 <7.72E+01 0.00E+00 7.72E+01 Zr-95 <4.24E+01 0.00E+00 4.24E+01 Nb-95 <3.24E+01 0.00E+00 3.24E+01 I-131 <4.29E+01 0.00E+00 4.29E+01 Cs-134 <3.40E+01 0.00E+00 3.40E+01 Cs-137 <3.31E+01 0.00E+00 3.31E+01 BaLa-140 <4.95E+01 0.00E+00 4.95E+01 Be-7 1.80E+03 3.90E+02 3.73E+02 K-40 1.91E+03 5.34E+02 4.74E+02 Sample ID: 440773 Sample Dates: 4/1/2017 - 4/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <3.28E+01 0.00E+00 3.28E+01 Co-58 <2.84E+01 0.00E+00 2.84E+01 Fe-59 <6.24E+01 0.00E+00 6.24E+01 Co-60 <3.19E+01 0.00E+00 3.19E+01 Zn-65 <6.78E+01 0.00E+00 6.78E+01 Zr-95 <5.15E+01 0.00E+00 5.15E+01 Nb-95 <2.81E+01 0.00E+00 2.81E+01 I-131 <3.54E+01 0.00E+00 3.54E+01 Cs-134 <3.14E+01 0.00E+00 3.14E+01 Cs-137 <3.65E+01 0.00E+00 3.65E+01 BaLa-140 <4.33E+01 0.00E+00 4.33E+01 Be-7 3.33E+03 5.38E+02 4.46E+02 K-40 2.37E+03 5.94E+02 5.44E+02 Sample ID: 443049 Sample Dates: 5/1/2017 - 5/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.15E+01 0.00E+00 2.15E+01 Co-58 <1.20E+01 0.00E+00 1.20E+01 Fe-59 <3.89E+01 0.00E+00 3.89E+01 Co-60 <2.81E+01 0.00E+00 2.81E+01 Zn-65 <4.61E+01 0.00E+00 4.61E+01 Zr-95 <4.04E+01 0.00E+00 4.04E+01 Nb-95 <2.91E+01 0.00E+00 2.91E+01 I-131 <2.51E+01 0.00E+00 2.51E+01 Cs-134 <2.29E+01 0.00E+00 2.29E+01 Cs-137 <2.58E+01 0.00E+00 2.58E+01 BaLa-140 <3.14E+01 0.00E+00 3.14E+01 Be-7 1.11E+03 2.45E+02 2.22E+02 K-40 2.71E+03 5.10E+02 2.18E+02 Sample ID: 444231 Sample Dates: 6/1/2017 - 6/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.02E+01 0.00E+00 2.02E+01 Co-58 <2.26E+01 0.00E+00 2.26E+01 Fe-59 <4.84E+01 0.00E+00 4.84E+01 Co-60 <2.61E+01 0.00E+00 2.61E+01 Zn-65 <5.13E+01 0.00E+00 5.13E+01 Zr-95 <3.94E+01 0.00E+00 3.94E+01 Nb-95 <2.46E+01 0.00E+00 2.46E+01 I-131 <3.41E+01 0.00E+00 3.41E+01 Cs-134 <2.65E+01 0.00E+00 2.65E+01 Cs-137 <3.25E+01 0.00E+00 3.25E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 152 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 802 Sample Point 802 [ CONTROL - -- @ 10.1 miles ]

Sample ID: 444231 Sample Dates: 6/1/2017 - 6/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA BaLa-140 <5.27E+01 0.00E+00 5.27E+01 Be-7 9.75E+02 2.77E+02 2.96E+02 K-40 2.20E+03 5.58E+02 4.89E+02 Sample ID: 447137 Sample Dates: 7/5/2017 - 7/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.74E+01 0.00E+00 2.74E+01 Co-58 <2.52E+01 0.00E+00 2.52E+01 Fe-59 <5.11E+01 0.00E+00 5.11E+01 Co-60 <2.56E+01 0.00E+00 2.56E+01 Zn-65 <3.88E+01 0.00E+00 3.88E+01 Zr-95 <3.50E+01 0.00E+00 3.50E+01 Nb-95 <2.37E+01 0.00E+00 2.37E+01 I-131 <2.58E+01 0.00E+00 2.58E+01 Cs-134 <2.21E+01 0.00E+00 2.21E+01 Cs-137 <2.65E+01 0.00E+00 2.65E+01 BaLa-140 <3.47E+01 0.00E+00 3.47E+01 Be-7 1.08E+03 3.12E+02 3.64E+02 K-40 1.25E+03 4.54E+02 5.19E+02 Sample ID: 449189 Sample Dates: 8/2/2017 - 8/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.34E+01 0.00E+00 2.34E+01 Co-58 <2.05E+01 0.00E+00 2.05E+01 Fe-59 <3.82E+01 0.00E+00 3.82E+01 Co-60 <2.33E+01 0.00E+00 2.33E+01 Zn-65 <5.68E+01 0.00E+00 5.68E+01 Zr-95 <4.14E+01 0.00E+00 4.14E+01 Nb-95 <2.17E+01 0.00E+00 2.17E+01 I-131 <3.11E+01 0.00E+00 3.11E+01 Cs-134 <2.72E+01 0.00E+00 2.72E+01 Cs-137 <2.60E+01 0.00E+00 2.60E+01 BaLa-140 <2.82E+01 0.00E+00 2.82E+01 Be-7 1.51E+03 3.06E+02 2.79E+02 K-40 1.37E+03 3.99E+02 3.89E+02 Sample ID: 451157 Sample Dates: 9/5/2017 - 9/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.80E+01 0.00E+00 2.80E+01 Co-58 <3.44E+01 0.00E+00 3.44E+01 Fe-59 <5.15E+01 0.00E+00 5.15E+01 Co-60 <3.05E+01 0.00E+00 3.05E+01 Zn-65 <7.81E+01 0.00E+00 7.81E+01 Zr-95 <6.59E+01 0.00E+00 6.59E+01 Nb-95 <3.51E+01 0.00E+00 3.51E+01 I-131 <3.39E+01 0.00E+00 3.39E+01 Cs-134 <4.19E+01 0.00E+00 4.19E+01 Cs-137 <2.82E+01 0.00E+00 2.82E+01 BaLa-140 <5.32E+01 0.00E+00 5.32E+01 Be-7 4.21E+03 6.16E+02 4.06E+02 K-40 2.43E+03 5.66E+02 3.80E+02 Sample ID: 453412 Sample Dates: 10/2/2017 - 10/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.13E+01 0.00E+00 2.13E+01 Co-58 <2.13E+01 0.00E+00 2.13E+01 Fe-59 <5.51E+01 0.00E+00 5.51E+01 Co-60 <2.35E+01 0.00E+00 2.35E+01 Zn-65 <6.66E+01 0.00E+00 6.66E+01 Zr-95 <4.37E+01 0.00E+00 4.37E+01 Nb-95 <2.58E+01 0.00E+00 2.58E+01 I-131 <2.58E+01 0.00E+00 2.58E+01 Cs-134 <2.03E+01 0.00E+00 2.03E+01 Cs-137 <2.43E+01 0.00E+00 2.43E+01 BaLa-140 <2.25E+01 0.00E+00 2.25E+01 Be-7 3.77E+03 5.13E+02 1.97E+02 K-40 1.32E+03 4.30E+02 4.56E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 153 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 802 Sample Point 802 [ CONTROL - -- @ 10.1 miles ]

Sample ID: 456010 Sample Dates: 11/2/2017 - 11/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.16E+01 0.00E+00 2.16E+01 Co-58 <2.41E+01 0.00E+00 2.41E+01 Fe-59 <4.23E+01 0.00E+00 4.23E+01 Co-60 <2.20E+01 0.00E+00 2.20E+01 Zn-65 <5.01E+01 0.00E+00 5.01E+01 Zr-95 <3.94E+01 0.00E+00 3.94E+01 Nb-95 <2.75E+01 0.00E+00 2.75E+01 I-131 <4.74E+01 0.00E+00 4.74E+01 Cs-134 <2.41E+01 0.00E+00 2.41E+01 Cs-137 <2.46E+01 0.00E+00 2.46E+01 BaLa-140 <4.28E+01 0.00E+00 4.28E+01 Be-7 5.07E+03 8.11E+02 2.26E+02 K-40 2.19E+03 3.63E+02 3.40E+02 Sample ID: 463060 Sample Dates: 12/3/2017 - 12/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.29E+01 0.00E+00 2.29E+01 Co-58 <2.03E+01 0.00E+00 2.03E+01 Fe-59 <4.58E+01 0.00E+00 4.58E+01 Co-60 <1.85E+01 0.00E+00 1.85E+01 Zn-65 <3.68E+01 0.00E+00 3.68E+01 Zr-95 <3.54E+01 0.00E+00 3.54E+01 Nb-95 <2.61E+01 0.00E+00 2.61E+01 I-131 <4.11E+01 0.00E+00 4.11E+01 Cs-134 <2.23E+01 0.00E+00 2.23E+01 Cs-137 <2.37E+01 0.00E+00 2.37E+01 BaLa-140 <3.63E+01 0.00E+00 3.63E+01 Be-7 2.48E+03 3.32E+02 2.91E+02 K-40 2.10E+03 3.41E+02 2.57E+02 Sample Point 803 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 433082 Sample Dates: 1/3/2017 - 1/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.82E+01 0.00E+00 2.82E+01 Co-58 <1.94E+01 0.00E+00 1.94E+01 Fe-59 <2.93E+01 0.00E+00 2.93E+01 Co-60 <2.18E+01 0.00E+00 2.18E+01 Zn-65 <6.51E+01 0.00E+00 6.51E+01 Zr-95 <4.43E+01 0.00E+00 4.43E+01 Nb-95 <2.73E+01 0.00E+00 2.73E+01 I-131 <2.49E+01 0.00E+00 2.49E+01 Cs-134 <2.88E+01 0.00E+00 2.88E+01 Cs-137 <2.21E+01 0.00E+00 2.21E+01 BaLa-140 <3.38E+01 0.00E+00 3.38E+01 Be-7 3.59E+03 5.11E+02 2.45E+02 K-40 1.53E+03 4.52E+02 4.10E+02 Sample ID: 435540 Sample Dates: 2/1/2017 - 2/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.47E+01 0.00E+00 2.47E+01 Co-58 <2.34E+01 0.00E+00 2.34E+01 Fe-59 <3.84E+01 0.00E+00 3.84E+01 Co-60 <1.53E+01 0.00E+00 1.53E+01 Zn-65 <5.41E+01 0.00E+00 5.41E+01 Zr-95 <3.85E+01 0.00E+00 3.85E+01 Nb-95 <2.54E+01 0.00E+00 2.54E+01 I-131 <2.09E+01 0.00E+00 2.09E+01 Cs-134 <2.77E+01 0.00E+00 2.77E+01 Cs-137 <2.40E+01 0.00E+00 2.40E+01 BaLa-140 <3.46E+01 0.00E+00 3.46E+01 Be-7 2.78E+03 4.46E+02 3.65E+02 K-40 2.13E+03 5.26E+02 4.87E+02 Sample ID: 438092 Sample Dates: 3/1/2017 - 3/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.53E+01 0.00E+00 2.53E+01 Co-58 <2.58E+01 0.00E+00 2.58E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 154 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 803 Sample Point 803 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 438092 Sample Dates: 3/1/2017 - 3/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Fe-59 <6.00E+01 0.00E+00 6.00E+01 Co-60 <2.49E+01 0.00E+00 2.49E+01 Zn-65 <6.10E+01 0.00E+00 6.10E+01 Zr-95 <4.24E+01 0.00E+00 4.24E+01 Nb-95 <2.58E+01 0.00E+00 2.58E+01 I-131 <3.40E+01 0.00E+00 3.40E+01 Cs-134 <2.98E+01 0.00E+00 2.98E+01 Cs-137 <2.01E+01 0.00E+00 2.01E+01 BaLa-140 <3.34E+01 0.00E+00 3.34E+01 Be-7 3.07E+03 4.70E+02 2.72E+02 K-40 2.57E+03 5.78E+02 4.36E+02 Sample ID: 440774 Sample Dates: 4/1/2017 - 4/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.74E+01 0.00E+00 2.74E+01 Co-58 <2.77E+01 0.00E+00 2.77E+01 Fe-59 <5.11E+01 0.00E+00 5.11E+01 Co-60 <3.46E+01 0.00E+00 3.46E+01 Zn-65 <4.30E+01 0.00E+00 4.30E+01 Zr-95 <5.58E+01 0.00E+00 5.58E+01 Nb-95 <3.55E+01 0.00E+00 3.55E+01 I-131 <3.59E+01 0.00E+00 3.59E+01 Cs-134 <2.88E+01 0.00E+00 2.88E+01 Cs-137 <2.65E+01 0.00E+00 2.65E+01 BaLa-140 <4.20E+01 0.00E+00 4.20E+01 Be-7 3.02E+03 5.05E+02 3.68E+02 K-40 3.14E+03 6.51E+02 3.48E+02 Sample ID: 443050 Sample Dates: 5/1/2017 - 5/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.49E+01 0.00E+00 2.49E+01 Co-58 <1.89E+01 0.00E+00 1.89E+01 Fe-59 <5.43E+01 0.00E+00 5.43E+01 Co-60 <2.98E+01 0.00E+00 2.98E+01 Zn-65 <4.78E+01 0.00E+00 4.78E+01 Zr-95 <4.95E+01 0.00E+00 4.95E+01 Nb-95 <2.02E+01 0.00E+00 2.02E+01 I-131 <2.70E+01 0.00E+00 2.70E+01 Cs-134 <3.06E+01 0.00E+00 3.06E+01 Cs-137 <2.14E+01 0.00E+00 2.14E+01 BaLa-140 <2.35E+01 0.00E+00 2.35E+01 Be-7 1.12E+03 3.03E+02 3.49E+02 K-40 3.15E+03 6.29E+02 4.16E+02 Sample ID: 444232 Sample Dates: 6/1/2017 - 6/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <1.91E+01 0.00E+00 1.91E+01 Co-58 <2.49E+01 0.00E+00 2.49E+01 Fe-59 <6.32E+01 0.00E+00 6.32E+01 Co-60 <3.14E+01 0.00E+00 3.14E+01 Zn-65 <5.54E+01 0.00E+00 5.54E+01 Zr-95 <4.89E+01 0.00E+00 4.89E+01 Nb-95 <2.39E+01 0.00E+00 2.39E+01 I-131 <3.47E+01 0.00E+00 3.47E+01 Cs-134 <2.44E+01 0.00E+00 2.44E+01 Cs-137 <2.98E+01 0.00E+00 2.98E+01 BaLa-140 <2.54E+01 0.00E+00 2.54E+01 Be-7 9.02E+02 2.75E+02 3.35E+02 K-40 3.19E+03 6.01E+02 3.30E+02 Sample ID: 447138 Sample Dates: 7/5/2017 - 7/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.92E+01 0.00E+00 2.92E+01 Co-58 <2.54E+01 0.00E+00 2.54E+01 Fe-59 <5.01E+01 0.00E+00 5.01E+01 Co-60 <2.02E+01 0.00E+00 2.02E+01 Zn-65 <6.64E+01 0.00E+00 6.64E+01 Zr-95 <4.42E+01 0.00E+00 4.42E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 155 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 803 Sample Point 803 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 447138 Sample Dates: 7/5/2017 - 7/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Nb-95 <2.42E+01 0.00E+00 2.42E+01 I-131 <2.46E+01 0.00E+00 2.46E+01 Cs-134 <3.04E+01 0.00E+00 3.04E+01 Cs-137 <2.29E+01 0.00E+00 2.29E+01 BaLa-140 <3.66E+01 0.00E+00 3.66E+01 Be-7 1.01E+03 2.80E+02 3.18E+02 K-40 3.37E+03 6.62E+02 4.93E+02 Sample ID: 449190 Sample Dates: 8/2/2017 - 8/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.88E+01 0.00E+00 2.88E+01 Co-58 <2.10E+01 0.00E+00 2.10E+01 Fe-59 <6.39E+01 0.00E+00 6.39E+01 Co-60 <3.62E+01 0.00E+00 3.62E+01 Zn-65 <6.86E+01 0.00E+00 6.86E+01 Zr-95 <4.08E+01 0.00E+00 4.08E+01 Nb-95 <2.34E+01 0.00E+00 2.34E+01 I-131 <4.39E+01 0.00E+00 4.39E+01 Cs-134 <3.89E+01 0.00E+00 3.89E+01 Cs-137 <2.93E+01 0.00E+00 2.93E+01 BaLa-140 <5.18E+01 0.00E+00 5.18E+01 Be-7 3.55E+03 5.91E+02 4.92E+02 K-40 3.05E+03 6.84E+02 5.14E+02 Sample ID: 451158 Sample Dates: 9/5/2017 - 9/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.18E+01 0.00E+00 2.18E+01 Co-58 <2.12E+01 0.00E+00 2.12E+01 Fe-59 <4.65E+01 0.00E+00 4.65E+01 Co-60 <3.33E+01 0.00E+00 3.33E+01 Zn-65 <4.85E+01 0.00E+00 4.85E+01 Zr-95 <4.15E+01 0.00E+00 4.15E+01 Nb-95 <2.43E+01 0.00E+00 2.43E+01 I-131 <3.55E+01 0.00E+00 3.55E+01 Cs-134 <2.43E+01 0.00E+00 2.43E+01 Cs-137 <2.88E+01 0.00E+00 2.88E+01 BaLa-140 <4.43E+01 0.00E+00 4.43E+01 Be-7 1.17E+03 2.91E+02 3.08E+02 K-40 2.90E+03 5.57E+02 2.18E+02 Sample ID: 453413 Sample Dates: 10/2/2017 - 10/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.54E+01 0.00E+00 2.54E+01 Co-58 <2.80E+01 0.00E+00 2.80E+01 Fe-59 <4.86E+01 0.00E+00 4.86E+01 Co-60 <2.51E+01 0.00E+00 2.51E+01 Zn-65 <3.00E+01 0.00E+00 3.00E+01 Zr-95 <3.65E+01 0.00E+00 3.65E+01 Nb-95 <2.22E+01 0.00E+00 2.22E+01 I-131 <2.43E+01 0.00E+00 2.43E+01 Cs-134 <3.13E+01 0.00E+00 3.13E+01 Cs-137 <2.69E+01 0.00E+00 2.69E+01 BaLa-140 <3.96E+01 0.00E+00 3.96E+01 Be-7 2.34E+03 4.03E+02 2.94E+02 K-40 2.74E+03 5.54E+02 6.35E+01 Sample ID: 456011 Sample Dates: 11/2/2017 - 11/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.30E+01 0.00E+00 2.30E+01 Co-58 <2.18E+01 0.00E+00 2.18E+01 Fe-59 <4.55E+01 0.00E+00 4.55E+01 Co-60 <2.00E+01 0.00E+00 2.00E+01 Zn-65 <5.01E+01 0.00E+00 5.01E+01 Zr-95 <3.94E+01 0.00E+00 3.94E+01 Nb-95 <2.74E+01 0.00E+00 2.74E+01 I-131 <4.79E+01 0.00E+00 4.79E+01 Cs-134 <2.20E+01 0.00E+00 2.20E+01 Cs-137 <2.27E+01 0.00E+00 2.27E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 156 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 803 Sample Point 803 [ INDICATOR - SSE @ 0.6 miles ]

Sample ID: 456011 Sample Dates: 11/2/2017 - 11/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA BaLa-140 <4.61E+01 0.00E+00 4.61E+01 Be-7 3.43E+03 3.98E+02 2.99E+02 K-40 4.10E+03 5.07E+02 3.30E+02 Sample ID: 463061 Sample Dates: 12/3/2017 - 12/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.39E+01 0.00E+00 2.39E+01 Co-58 <2.17E+01 0.00E+00 2.17E+01 Fe-59 <4.73E+01 0.00E+00 4.73E+01 Co-60 <2.41E+01 0.00E+00 2.41E+01 Zn-65 <5.46E+01 0.00E+00 5.46E+01 Zr-95 <4.66E+01 0.00E+00 4.66E+01 Nb-95 <2.84E+01 0.00E+00 2.84E+01 I-131 <4.61E+01 0.00E+00 4.61E+01 Cs-134 <2.25E+01 0.00E+00 2.25E+01 Cs-137 <2.26E+01 0.00E+00 2.26E+01 BaLa-140 <4.13E+01 0.00E+00 4.13E+01 Be-7 2.09E+03 3.36E+02 3.37E+02 K-40 2.74E+03 4.57E+02 3.63E+02 Sample Point 804 [ INDICATOR - S @ 0.7 miles ]

Sample ID: 433083 Sample Dates: 1/3/2017 - 1/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <1.86E+01 0.00E+00 1.86E+01 Co-58 <2.75E+01 0.00E+00 2.75E+01 Fe-59 <4.24E+01 0.00E+00 4.24E+01 Co-60 <2.48E+01 0.00E+00 2.48E+01 Zn-65 <5.07E+01 0.00E+00 5.07E+01 Zr-95 <4.08E+01 0.00E+00 4.08E+01 Nb-95 <2.18E+01 0.00E+00 2.18E+01 I-131 <2.52E+01 0.00E+00 2.52E+01 Cs-134 <2.52E+01 0.00E+00 2.52E+01 Cs-137 <2.59E+01 0.00E+00 2.59E+01 BaLa-140 <3.32E+01 0.00E+00 3.32E+01 Be-7 1.25E+03 2.97E+02 3.15E+02 K-40 1.73E+03 4.23E+02 2.67E+02 Sample ID: 435541 Sample Dates: 2/1/2017 - 2/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.07E+01 0.00E+00 2.07E+01 Co-58 <2.71E+01 0.00E+00 2.71E+01 Fe-59 <5.08E+01 0.00E+00 5.08E+01 Co-60 <3.29E+01 0.00E+00 3.29E+01 Zn-65 <6.16E+01 0.00E+00 6.16E+01 Zr-95 <4.68E+01 0.00E+00 4.68E+01 Nb-95 <3.40E+01 0.00E+00 3.40E+01 I-131 <2.30E+01 0.00E+00 2.30E+01 Cs-134 <4.01E+01 0.00E+00 4.01E+01 Cs-137 <2.51E+01 0.00E+00 2.51E+01 BaLa-140 <3.82E+01 0.00E+00 3.82E+01 Be-7 2.81E+03 4.42E+02 2.41E+02 K-40 2.61E+03 5.84E+02 3.78E+02 Sample ID: 438093 Sample Dates: 3/1/2017 - 3/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.83E+01 0.00E+00 2.83E+01 Co-58 <2.60E+01 0.00E+00 2.60E+01 Fe-59 <4.83E+01 0.00E+00 4.83E+01 Co-60 <2.95E+01 0.00E+00 2.95E+01 Zn-65 <4.64E+01 0.00E+00 4.64E+01 Zr-95 <4.78E+01 0.00E+00 4.78E+01 Nb-95 <2.75E+01 0.00E+00 2.75E+01 I-131 <3.26E+01 0.00E+00 3.26E+01 Cs-134 <2.85E+01 0.00E+00 2.85E+01 Cs-137 <2.97E+01 0.00E+00 2.97E+01 BaLa-140 <4.62E+01 0.00E+00 4.62E+01 Be-7 1.98E+03 3.74E+02 2.71E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 157 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 804 Sample Point 804 [ INDICATOR - S @ 0.7 miles ]

Sample ID: 438093 Sample Dates: 3/1/2017 - 3/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA K-40 1.98E+03 5.08E+02 3.87E+02 Sample ID: 440775 Sample Dates: 4/1/2017 - 4/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.91E+01 0.00E+00 2.91E+01 Co-58 <2.32E+01 0.00E+00 2.32E+01 Fe-59 <4.44E+01 0.00E+00 4.44E+01 Co-60 <1.96E+01 0.00E+00 1.96E+01 Zn-65 <5.19E+01 0.00E+00 5.19E+01 Zr-95 <3.58E+01 0.00E+00 3.58E+01 Nb-95 <2.41E+01 0.00E+00 2.41E+01 I-131 <3.00E+01 0.00E+00 3.00E+01 Cs-134 <2.82E+01 0.00E+00 2.82E+01 Cs-137 <2.89E+01 0.00E+00 2.89E+01 BaLa-140 <3.35E+01 0.00E+00 3.35E+01 Be-7 2.24E+03 3.79E+02 2.74E+02 K-40 2.22E+03 5.11E+02 3.86E+02 Sample ID: 443051 Sample Dates: 5/1/2017 - 5/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.54E+01 0.00E+00 2.54E+01 Co-58 <2.55E+01 0.00E+00 2.55E+01 Fe-59 <6.50E+01 0.00E+00 6.50E+01 Co-60 <2.28E+01 0.00E+00 2.28E+01 Zn-65 <5.63E+01 0.00E+00 5.63E+01 Zr-95 <3.17E+01 0.00E+00 3.17E+01 Nb-95 <2.50E+01 0.00E+00 2.50E+01 I-131 <2.66E+01 0.00E+00 2.66E+01 Cs-134 <2.28E+01 0.00E+00 2.28E+01 Cs-137 <2.31E+01 0.00E+00 2.31E+01 BaLa-140 <3.21E+01 0.00E+00 3.21E+01 Be-7 4.68E+02 2.10E+02 2.75E+02 K-40 2.84E+03 5.76E+02 6.68E+01 Sample ID: 444233 Sample Dates: 6/1/2017 - 6/1/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.31E+01 0.00E+00 2.31E+01 Co-58 <2.14E+01 0.00E+00 2.14E+01 Fe-59 <5.81E+01 0.00E+00 5.81E+01 Co-60 <2.83E+01 0.00E+00 2.83E+01 Zn-65 <5.30E+01 0.00E+00 5.30E+01 Zr-95 <5.14E+01 0.00E+00 5.14E+01 Nb-95 <2.71E+01 0.00E+00 2.71E+01 I-131 <2.59E+01 0.00E+00 2.59E+01 Cs-134 <2.19E+01 0.00E+00 2.19E+01 Cs-137 <2.00E+01 0.00E+00 2.00E+01 BaLa-140 <3.07E+01 0.00E+00 3.07E+01 Be-7 8.90E+02 2.33E+02 2.34E+02 K-40 2.47E+03 5.06E+02 2.88E+02 Sample ID: 447139 Sample Dates: 7/5/2017 - 7/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <3.08E+01 0.00E+00 3.08E+01 Co-58 <2.50E+01 0.00E+00 2.50E+01 Fe-59 <4.17E+01 0.00E+00 4.17E+01 Co-60 <3.33E+01 0.00E+00 3.33E+01 Zn-65 <4.99E+01 0.00E+00 4.99E+01 Zr-95 <5.45E+01 0.00E+00 5.45E+01 Nb-95 <3.02E+01 0.00E+00 3.02E+01 I-131 <3.79E+01 0.00E+00 3.79E+01 Cs-134 <3.44E+01 0.00E+00 3.44E+01 Cs-137 <2.86E+01 0.00E+00 2.86E+01 BaLa-140 <3.43E+01 0.00E+00 3.43E+01 Be-7 1.30E+03 3.03E+02 2.85E+02 K-40 2.89E+03 5.95E+02 3.35E+02 Sample ID: 449191 Sample Dates: 8/2/2017 - 8/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.65E+01 0.00E+00 2.65E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 158 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 804 Sample Point 804 [ INDICATOR - S @ 0.7 miles ]

Sample ID: 449191 Sample Dates: 8/2/2017 - 8/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Co-58 <3.13E+01 0.00E+00 3.13E+01 Fe-59 <6.63E+01 0.00E+00 6.63E+01 Co-60 <4.80E+01 0.00E+00 4.80E+01 Zn-65 <7.47E+01 0.00E+00 7.47E+01 Zr-95 <4.69E+01 0.00E+00 4.69E+01 Nb-95 <3.13E+01 0.00E+00 3.13E+01 I-131 <3.36E+01 0.00E+00 3.36E+01 Cs-134 <3.13E+01 0.00E+00 3.13E+01 Cs-137 <2.55E+01 0.00E+00 2.55E+01 BaLa-140 <1.08E+01 0.00E+00 1.08E+01 Be-7 1.93E+03 3.87E+02 3.33E+02 K-40 2.79E+03 6.03E+02 3.28E+02 Sample ID: 451159 Sample Dates: 9/5/2017 - 9/5/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.07E+01 0.00E+00 2.07E+01 Co-58 <2.49E+01 0.00E+00 2.49E+01 Fe-59 <3.62E+01 0.00E+00 3.62E+01 Co-60 <1.85E+01 0.00E+00 1.85E+01 Zn-65 <9.50E+00 0.00E+00 9.50E+00 Zr-95 <3.74E+01 0.00E+00 3.74E+01 Nb-95 <2.43E+01 0.00E+00 2.43E+01 I-131 <2.94E+01 0.00E+00 2.94E+01 Cs-134 <2.17E+01 0.00E+00 2.17E+01 Cs-137 <2.90E+01 0.00E+00 2.90E+01 BaLa-140 <2.56E+01 0.00E+00 2.56E+01 Be-7 1.66E+03 3.08E+02 2.21E+02 K-40 2.45E+03 4.92E+02 2.15E+02 Sample ID: 453414 Sample Dates: 10/2/2017 - 10/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <1.71E+01 0.00E+00 1.71E+01 Co-58 <2.08E+01 0.00E+00 2.08E+01 Fe-59 <3.24E+01 0.00E+00 3.24E+01 Co-60 <2.28E+01 0.00E+00 2.28E+01 Zn-65 <5.26E+01 0.00E+00 5.26E+01 Zr-95 <3.79E+01 0.00E+00 3.79E+01 Nb-95 <2.33E+01 0.00E+00 2.33E+01 I-131 <2.21E+01 0.00E+00 2.21E+01 Cs-134 <2.55E+01 0.00E+00 2.55E+01 Cs-137 <2.20E+01 0.00E+00 2.20E+01 BaLa-140 <2.89E+01 0.00E+00 2.89E+01 Be-7 1.36E+03 2.73E+02 2.25E+02 K-40 1.80E+03 4.25E+02 3.00E+02 Sample ID: 456012 Sample Dates: 11/2/2017 - 11/2/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.28E+01 0.00E+00 2.28E+01 Co-58 <2.30E+01 0.00E+00 2.30E+01 Fe-59 <4.70E+01 0.00E+00 4.70E+01 Co-60 <2.45E+01 0.00E+00 2.45E+01 Zn-65 <5.06E+01 0.00E+00 5.06E+01 Zr-95 <4.51E+01 0.00E+00 4.51E+01 Nb-95 <2.81E+01 0.00E+00 2.81E+01 I-131 <4.50E+01 0.00E+00 4.50E+01 Cs-134 <2.37E+01 0.00E+00 2.37E+01 Cs-137 <2.22E+01 0.00E+00 2.22E+01 BaLa-140 <4.05E+01 0.00E+00 4.05E+01 Be-7 2.82E+03 3.61E+02 3.02E+02 K-40 3.49E+03 7.82E+02 2.85E+02 Sample ID: 463062 Sample Dates: 12/3/2017 - 12/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Mn-54 <2.94E+01 0.00E+00 2.94E+01 Co-58 <3.58E+01 0.00E+00 3.58E+01 Fe-59 <6.02E+01 0.00E+00 6.02E+01 Co-60 <3.22E+01 0.00E+00 3.22E+01 Zn-65 <6.12E+01 0.00E+00 6.12E+01 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 159 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

BRUNSWICK Radiological Environmental Monitoring Analysis Report - 2017 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg wet 804 Sample Point 804 [ INDICATOR - S @ 0.7 miles ]

Sample ID: 463062 Sample Dates: 12/3/2017 - 12/3/2017 WAXMYRTLE Nuclide Activity 2 Sigma Error MDA Zr-95 <4.92E+01 0.00E+00 4.92E+01 Nb-95 <3.09E+01 0.00E+00 3.09E+01 I-131 <4.75E+01 0.00E+00 4.75E+01 Cs-134 <3.05E+01 0.00E+00 3.05E+01 Cs-137 <3.02E+01 0.00E+00 3.02E+01 BaLa-140 <5.58E+01 0.00E+00 5.58E+01 Be-7 1.77E+03 3.57E+02 3.75E+02 K-40 2.11E+03 5.31E+02 5.74E+02 Report Generated @ 4/3/2018 18:34:26 EnRad Laboratories Appendix E - Page 160 of 160 Duke Energy Annual Report - Appendix E 13339 Hagers Ferry Road Huntersville, North Carolina 28078

APPENDIX F ERRATA TO PREVIOUS REPORTS Appendix F - Page 1

APPENDIX F ERRATA TO THE 2017 BSEP AREOR There are no errata to be appended to the 2017 BSEP AREOR.

Appendix F - Page 2

BSEP 18-0052, Annual Radiological Environmental Operating Report - 2017

Contents

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Subject:

Enclosure:

SUMMARY

2.0 INTRODUCTION

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BSEP 18-0052, Annual Radiological Environmental Operating Report - 2017

Text

Subject:

Enclosure:

SUMMARY

2.0 INTRODUCTION

SUMMARY

SUMMARY

SUMMARY

Navigation menu

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