Text

Annual Radiological Environmental Operating Report 2016
	ML17150A415
Person / Time
Site:	Catawba
Issue date:	12/31/2016
From:	; Duke Energy Carolinas
To:	; Office of Nuclear Reactor Regulation
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ML17150A413	List: CNS-17-026, Annual Radiological Environmental Operating Report 2016; ML17150A402;
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	CNS-17-026
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ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT DUKE ENERGY CORPORATION CATAWBA NUCLEAR STATION Units 1 and 2 2016

i 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 2-1 2.3 Statistical and Calculational Methodology.

2-2 2.3.1 Estimation of the Mean Value.

2-2 2.3.2 Lower Level of Detection and Minimum Detectable Activity 2-3 2.3.3 Trend Identification.

2-3 3.0 Interpretation of Results.

3-1 3.1 Airborne Radioiodine and Particulates 3-2 3.2 Drinking Water.

3-5 3.3 Surface Water.

3-8 3.4 Milk.

3-11 3.5 Broadleaf Vegetation.

3-13 3.6 Food Products.

3-15 3.7 Fish.

3-16 3.8 Shoreline Sediment.

3-19 3.9 Direct Gamma Radiation.

3-22 3.9.1 Environmental TLD.

3-22 3.9.2 ISFSI 3-23 3.10 Land Use Census 3-27 4.0 Evaluation of Dose.

4-1 4.1 Dose from Environmental Measurements.

4-1 4.2 Estimated Dose from Releases.

4-1 4.3 Comparison of Doses.

4-2 5.0 Quality Assurance 5-1 5.1 Sample Collection 5-1 5.2 Sample Analysis 5-1 5.3 Dosimetry Analysis.

5-1 5.4 Laboratory Equipment Quality Assurance.

5-1 5.4.1 Daily Quality Control 5-1 5.4.2 Calibration Verification.

5-1 5.4.3 Batch Processing 5-1 5.5 Duke Energy Interlaboratory Comparison Program 5-1 5.5.1 Duke Energy Interlaboratory Program 5-2 5.5.2 Eckert & Ziegler Analytics Cross Check Program 5-2 5.5.3 ERA Proficiency Testing.

5-3 5.6 Intercomparison Program.

5-4 5.7 TLD Intercomparison Program.

5-4 5.7.1 Nuclear Technology Services Intercomparison Program 5-4 Appendices Appendix A: Environmental Sampling and Analysis Procedures A-1 I.

Change of Sampling Procedures A-2 II. Description of Analysis Procedures.

A-2 III. Change of Analysis Procedures.

A-3 IV. Sampling and Analysis Procedures A-3

ii A.1 Airborne Particulate and Radioiodine A-3 A.2 Drinking Water A-3 A.3 Surface Water A-4 A.4 Milk A-4 A.5 Broadleaf Vegetation A-4 A.6 Food Products.

A-4 A.7 Fish A-4 A.8 Shoreline Sediment.

A-5 A.9 Direct Gamma Radiation (TLD)

A-5 A.10 Annual Land Use Census A-5 V.

Global Positioning System (GPS) Analysis.

A-6 Appendix B: Radiological Environmental Monitoring Program Data Summary.

B-1 Air Particulate.

B-2 Air Radioiodine.

B-2 Drinking Water.

B-2 Surface Water.

B-2 Milk.

B-2 Broadleaf Vegetation B-3 Food Products.

B-3 Fish.

B-3 Shoreline Sediment.

B-3 Direct Gamma Radiation (TLD)

B-3 Appendix C: Catawba Nuclear Station Sampling Deviations & Unavailable Analyses.

C-1 C.1 Sampling Deviations C-2 C.2 Unavailable Analyses C-3 Appendix D: Catawba Nuclear Station Analytical Deviations.

D-1 Appendix E: Radiological Environmental Monitoring Program Results E-1 Appendix F: Errata to Previous Reports F-1 LIST OF FIGURES 2.1-1 Sampling Locations Map (One Mile Radius) 2-4 2.1-2 Sampling Locations Map (Ten Mile Radius) 2-5 3.1 Concentration of Gross Beta in Air Particulate.

3-2 3.2 Concentration of Tritium in Drinking Water 3-6 3.3 Concentration of Tritium in Surface Water.

3-9 3.5 Concentration of Cs-137 in Broadleaf Vegetation 3-13 3.7-1 Concentration of Co-58 in Fish.

3-16 3.7-2 Concentration of Co-60 in Fish.

3-17 3.7-3 Concentration of Cs-137 in Fish.

3-17 3.8-1 Concentration of Co-58 in Shoreline Sediment.

3-19 3.8-2 Concentration of Co-60 in Shoreline Sediment.

3-20 3.8-3 Concentration of Cs-137 in Shoreline Sediment.

3-20 3.9 Direct Gamma Radiation (TLD) Results 3-23 3.10 2016 Land Use Census Map 3-28 LIST OF TABLES 2.1-A Catawba Radiological Monitoring Program Sampling Locations.

2-6 2.1-B Catawba Radiological Monitoring Program Sampling Locations (TLD Sites).

2-7 2.2-A Reporting Levels for Radioactivity Concentrations in Environmental Samples 2-8 2.2-B REMP Analysis Frequency 2-8 2.2-C Maximum Values for the A Priori Lower Limits of Detection 2-9 3.1-A Mean Concentration of Gross Beta in Air Particulate.

3-3 3.1-B Mean Concentration of Air Radioiodine (I-131).

3-4

iii 3.2 Mean Concentrations of Radionuclides in Drinking Water.

3-7 3.3 Mean Concentrations of Radionuclides in Surface Water.

3-10 3.4 Mean Concentration of Radionuclides in Milk.

3-12 3.5 Mean Concentration of Radionuclides in Broadleaf Vegetation.

3-14 3.6 Mean Concentration of Radionuclides in Food Products 3-15 3.7 Mean Concentrations of Radionuclides in Fish (pCi/kg).

3-18 3.8 Mean Concentrations of Radionuclides in Shoreline Sediment (pCi/kg).

3-21 3.9-A Direct Gamma Radiation (TLD) Results 3-24 3.9-B Direct Gamma Radiation (TLD) Catawba 2016 Investigation Level 3-25 3.10 Catawba 2016 Land Use Census Results..

3-27 4.1-A Catawba Nuclear Station 2016 Environmental and Effluent Dose Comparison 4-3 4.1-B Maximum Individual Dose for 2016 based on Environmental Measurements (mrem) for Catawba Nuclear Station.

4-5 5.0-A Duke Energy Interlaboratory Comparison Program.

5-5 5.0-B Eckert & Ziegler Analytics Cross Check Program 5-12 5.0-C Environmental Resource Associates (ERA) Proficiency Testing.

5-15 5.0-D 2016 Environmental Dosimeter Cross-Check Results.

5-16 LIST OF ACRONYMS USED IN THIS TEXT (in alphabetical order)

AREOR Annual Radiological Environmental Operating Report ARERR Annual Radiological Effluent Release Report BW BiWeekly C

Control CNS Catawba Nuclear Station CR Condition Report (analogous to Nuclear Condition Report (NCR))

ERA Environmental Resource Associates EZA Eckert & Ziegler Analytics GEL General Engineering Laboratory GI-LLI Gastrointestinal - Lower Large Intestine GPS Global Positioning System I

Indicator IR Inner Ring ISFSI Independent Spent Fuel Storage Installation LLD Lower Limit of Detection LLI Low Level Iodine M

Monthly MDA Minimum Detectable Activity mrem Millirem MWe Megawatt (electrical)

NIST National Institute of Standards and Technology NCR Nuclear Condition Report (analogous to Condition Report (CR))

NRC Nuclear Regulatory Commission ODCM Offsite Dose Calculation Manual OR Outer Ring pCi/kg picocurie per kilogram pCi/l picocurie per liter pCi/m3 picocurie per cubic meter Q

Quarterly REMP Radiological Environmental Monitoring Program SA Semiannually SI Special Interest SLCs Selected Licensee Commitments SM Semimonthly T. Body Total Body TECH SPECs Technical Specifications TLD Thermoluminescent Dosimeter PCi/ml microcurie per milliliter UFSAR Updated Final Safety Analysis Report W

Weekly

Section 1 - Page 1 1.0 EXECUTIVE

SUMMARY

This Annual Radiological Environmental Operating Report describes the Catawba Nuclear Station Radiological Environmental Monitoring Program (REMP), and the program results for the calendar year 2016.

Included are the identification of sampling locations, descriptions of environmental sampling and analysis procedures, comparisons of present environmental radioactivity levels and pre-operational environmental data, comparisons of doses calculated from environmental measurements and effluent data, analysis of trends in environmental radiological data as potentially affected by station 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 Selected Licensee Commitments (SLCs). One-thousand thirty-four samples were analyzed comprising 1,060 test results in order to compile data for the 2016 report. Based on the annual land use census, the current number of sampling sites for Catawba Nuclear Station is sufficient.

Concentrations observed in the environment in 2016 for station related radionuclides were generally within the ranges of concentrations observed in the past. Inspection of data showed that radioactivity concentrations in surface water, fish, and shoreline sediment are higher than the activities reported for samples collected prior to the operation of the station. Measured concentrations were not higher than expected and all positively identified measurements attributable to station operation were within limits as specified in SLCs.

Additionally, environmental radiological monitoring data is consistent with effluents introduced into the environment by plant operations. The total body dose estimated to the maximum exposed member of the public as calculated by environmental sampling data, excluding TLD results, was 3.71E-2 mrem for 2016. Background radiation dose in the United States is approximately 620 mrem per year (approximately half from naturally occurring sources such as radon and half from man-made sources such as medical processes).1 It is therefore concluded that station operations has had no significant radiological impact on the health and safety of the public or the environment.

1NCRP (2009). National Council on Radiation Protection and Measurements. Ionizing Radiation Exposure of the Population of the United States, NCRP Report No. 160 (National Council on Radiation Protection and Measurements, Bethesda, Maryland).

Section 2 - Page 1

2.0 INTRODUCTION

2.1 SITE DESCRIPTION AND SAMPLE LOCATIONS Duke Energy Corporation's Catawba Nuclear Station is a two-unit facility located on the shore of Lake Wylie in York County, South Carolina. Each of the two essentially identical units employs a pressurized water reactor nuclear steam supply system furnished by Westinghouse Electric Corporation. Each generating unit is designed to produce a net electrical output of approximately 1145 MWe. Units 1 and 2 achieved initial criticality on January 7, 1985, and May 8, 1986, respectively.

Condenser cooling is accomplished utilizing a closed system incorporating cooling towers, instead of using lake water directly. Liquid effluents are released into Lake Wylie via the station discharge canal and are not accompanied by the large additional dilution water flow associated with once-through condenser cooling. This design results in greater radionuclide concentrations in the discharge canal given comparable liquid effluent source terms.

Figures 2.1-1 and 2.1-2 are maps depicting the Thermoluminescent Dosimeter (TLD) monitoring locations and the sampling locations. The location numbers shown on these maps correspond to those listed in Tables 2.1-A and 2.1-B. Figure 2.1-1 comprises all sample locations within a one mile radius of CNS. Figure 2.1-2 comprises all sample locations within a 10 mile radius of CNS.

2.2 SCOPE AND REQUIREMENTS OF THE REMP An environmental monitoring program has been in effect at Catawba Nuclear Station since 1981, four years prior to operation of Unit 1 in 1985. The preoperational program provides data on the existing environmental radioactivity levels for the site and vicinity which may be used to determine whether increases in environmental levels are attributable to the station. The operational program provides surveillance and backup support of detailed effluent monitoring which is necessary to evaluate the significance, if any, of the contributions to the existing environmental radioactivity levels that result from station operation.

This monitoring program is based on NRC guidance as reflected in the Selected Licensee Commitments Manual, with regard to sample media, sampling locations, sampling frequency and analytical sensitivity requirements. Indicator and control locations were established for comparison purposes to distinguish radioactivity of station 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 Catawba Nuclear Station. This program satisfies the requirements of Section IV.B.2 of Appendix I to 10CFR50 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. Table 2.2-B lists the REMP analysis and frequency schedule.

Section 2 - Page 2 The Annual Land Use Census, required by Selected Licensee Commitments, 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 land use. This census satisfies the requirements of Section IV.B.3 of Appendix I to 10CFR50. Results are shown in Table 3.10.

Participation in an interlaboratory comparison program as required by Selected Licensee Commitments 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 10CFR50. A summary of the results obtained as part of this comparison program are in Section 5 of this annual report.

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:

x

=

N N

i ix

1 Where:

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

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

Section 2 - Page 3 2.3.2 LOWER LEVEL OF DETECTION AND MINIMUM DETECTABLE ACTIVITY The Lower Level of Detection (LLD), and Minimum Detectable Activity (MDA) are used throughout the REMP.

LLD - The LLD, as defined in the Selected Licensee Commitments Manual is the smallest concentration of radioactive material in a sample that will yield a net count, above the system background, that will be detected with 95% probability with only 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" LLDs for each sample medium and selected radionuclides are given in the Selected Licensee Commitments and are listed in Table 2.2-C.

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 Chernobyl accident).

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

Section 2 - Page 5 Figure 2.1-2

Section 2 - Page 6 TABLE 2.1-A CATAWBA RADIOLOGICAL MONITORING PROGRAM SAMPLING LOCATIONS Table 2.1-A Codes W

Weekly SM Semimonthly BW BiWeekly Q

Quarterly M

Monthly SA Semiannually C

Control I

Indicator Site Measure Type Location Description*

Air Rad. &

Part.

Surface Water Drinking Water Shoreline Sediment Food Products (a)

Fish Milk Broad Leaf Veg. (b) 200 I

Site Boundary (0.63 mi NNE)

W M

201 I

Site Boundary (0.53 mi NE)

W M

208 I

Discharge Canal (0.45 mi S)

W M

SA SA 210 I

Ebenezer Access (2.31 mi SE)

SA 211 I

Wylie Dam (4.06 mi ESE)

M 212 I

Tega Cay (3.32 mi E)

W 214 I

Rock Hill Water Supply (7.30 mi SSE)

M 215 C

River Pointe - Hwy 49 (4.21 mi NNE)

M SA 216 C

Hwy 49 Bridge (4.19 mi NNE)

SA 218 C

Belmont Water Supply (13.5 mi NNE)

M 221 C

Dairy (14.5 mi NW)

SM 222 I

Site Boundary (0.70 mi N)

M 226 I

Site Boundary (0.48 mi S)

M 258 C

Fairhope Road (9.84 mi W)

W M

260 I

Irrigated Gardens (2.00 mi SSE)

M(a) 261 I

Firing Range-Site Boundary (0.72 mi N)

W (a) During Harvest Season (b) When Available

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 7 TABLE 2.1-B CATAWBA RADIOLOGICAL MONITORING PROGRAM SAMPLING LOCATIONS (TLD SITES)

Table 2.1-B Codes IR Inner Ring OR Outer Ring C

Control SI Special Interest Site Measure Type Location*

Distance (miles)

Sector Site Measure Type Location*

Distance (miles)

Sector 200 IR SITE BOUNDARY 0.63 NNE 234 OR WELLS FARGO BANK 4.50 E

201 IR SITE BOUNDARY 0.53 NE 235 OR LAKE WYLIE DAM 4.07 ESE 203 IR SITE BOUNDARY 0.38 ESE 236 OR SC WILDLIFE FEDERATION OFFICE 4.25 SE 204 IR SITE BOUNDARY 0.48 SSW 237 OR TWIN LAKES ROAD AND HOMESTEAD ROAD 4.75 SSE 205 IR SITE BOUNDARY 0.25 SW 238 OR PENNINGTON ROAD AND WEST OAK ROAD 4.02 S

206 IR SITE BOUNDARY 0.67 WNW 239 OR CARTER LUMBER COMPANY 4.49 SSW 207 IR SITE BOUNDARY 0.95 NNW 240 OR PARAHAM ROAD 4.07 SW 212 SI TEGA CAY AIR SITE 3.32 E

241 OR CAMPBELL ROAD 4.58 WSW 217 C

BLACKMON ROAD 10.3 SSE 242 OR TRANSMISSION TOWER ON PARAHAM ROAD 4.56 W

222 IR SITE BOUNDARY 0.71 N

243 OR KINGSBURRY ROAD 4.39 WNW 223 IR SITE BOUNDARY 0.57 E

244 OR BETHEL ELEMENTARY SCHOOL 4.02 NW 225 IR SITE BOUNDARY 0.68 SE 245 OR CROWDERS CREEK BOAT LANDING 4.01 NNW 226 IR SITE BOUNDARY 0.48 S

246 SI CAROWINDS GUARD HOUSE 7.87 ENE 227 IR SITE BOUNDARY 0.52 WSW 247 C

FORT MILL 7.33 ESE 228 IR SITE BOUNDARY 0.61 W

248 SI PIEDMONT MEDICAL CENTER 6.54 S

229 IR SITE BOUNDARY 0.84 NW 249 SI YORK COUNTY OPERATIONS CENTER 7.17 S

230 OR RIVER HILLS CHURCH 4.37 N

250 SI YORK DUKE ENERGY OFFICE 10.4 WSW 231 OR RIVER HILLS FRONT ENTRANCE 4.21 NNE 251 C

CLOVER 9.72 WNW 232 OR PLEASANT HILL ROAD 4.18 NE 255 IR SITE BOUNDARY 0.61 ENE 233 OR ZOAR ROAD AND THOMAS DRIVE 3.95 ENE 256 IR SITE BOUNDARY 0.58 SSE 258 SI FAIRHOPE ROAD 9.84 W

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 8 TABLE 2.2-A REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS IN ENVIRONMENTAL SAMPLES Analysis Water (pCi/liter)

Air Particulates or Gases (pCi/m3)

Fish (pCi/kg-wet)

Milk (pCi/liter)

Food Products (pCi/kg-wet)

H-3 20,000(a),(b)

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 (a) If no drinking water pathway exists, a value of 30,000 pCi/liter may be used.

(b) H-3 Reporting level not applicable to surface water TABLE 2.2-B REMP ANALYSIS FREQUENCY Sample Medium Analysis Schedule Gamma Isotopic Tritium Low Level I-131 Gross Beta TLD Air Radioiodine Weekly X

Air Particulate Weekly X

X Quarterly Composite X

Direct Radiation Quarterly X

Surface Monthly Composite X

Water Quarterly Composite X

Drinking Monthly Composite X

(a)

X Water Quarterly Composite X

Ground Water Quarterly X

X Shoreline Sediment Semiannually X

Milk Semimonthly X

X Fish Semiannually X

Broadleaf Vegetation Monthly(b)

X Food Products Monthly(b)

X (a) Low-level I-131 analysis will be performed if the dose calculated for the consumption of drinking water is

> 1 mrem per year. An LLD of 1 pCi/liter will be required for this analysis.

(b) When Available

Section 2 - Page 9 TABLE 2.2-C MAXIMUM VALUES FOR THE A PRIORI LOWER LIMIT OF DETECTION Analysis Water (pCi/liter)

Air Particulates or Gases (pCi/m3)

Fish (pCi/kg-wet)

Milk (pCi/liter)

Food Products (pCi/kg-wet)

Sediment (pCi/kg-dry)

Gross Beta 4

0.01 H-3 2000 (a)

Mn-54 15 130 Fe-59 30 260 Co-58, 60 15 130 Zn-65 30 260 Zr-Nb-95 15 I-131 1(b) 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) If no drinking water pathway exists, a value of 3,000 pCi/liter may be used.

(b) If no drinking water pathway exists, the LLD of gamma isotopic analysis may be used.

Section 3 - Page 1 3.0 INTERPRETATION OF RESULTS Review of all 2016 REMP analysis results was performed to identify changes in environmental levels as a result of station operations. The following section depicts and explains the review of these results. Sample data for 2016 was compared to preoperational and historical data. Over the years of operation, analysis and collection changes have taken place that do not allow direct comparisons for some data collected from 1984 (preoperational) through 2016. Summary tables containing 2016 information required by Technical Specification Administrative Control 5.6.2 are located in Appendix B. REMP results for 2016 are located in Appendix E.

Evaluation for significant trends was performed for radionuclides that are listed as required within Selected Licensee Commitments 16.11-13. 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 drinking water and gross beta trending for air particulates was initiated in 1996. Other radionuclides detected that are the result of plant operation, but not required for reporting, are trended.

A comparison of annual mean concentrations of effluent-based detected radionuclides to historical results provided trending bases. Frequency of detection and concentrations related to SLC reporting levels (Table 2.2-A) were used as criteria for trending conclusions. All 2016 maximum percentages of reporting levels attributed to CNS operation were well below the 100% action level.

Selected Licensee Commitment section 16.11-13 addresses actions to be taken if radionuclides other than those required are detected in samples collected. The occurrences of these radionuclides are the result of CNS liquid effluents which contained the radionuclides.

During 1984-1986, all net activity results (sample minus background), both positive and negative were included in calculation of sample mean. A change in the EnRad gamma spectroscopy system on September 1, 1987, decreased the number of measurements yielding detectable low-level activity for indicator and control location samples. It was thought that the method used by the previous system was vulnerable to false-positive results.

All 2016 sample analysis results were reviewed to detect and identify any significant trends.

Tables and graphs are used throughout this section to display data from effluent-based radionuclides identified since the system change in late 1987. All negative concentration values were replaced with zero for calculation purposes. Any zero concentrations used in tables or graphs represent activity measurements less than detectable levels.

Review of all 2016 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 CNS site and surrounding areas that were attributable to plant operations.

Section 3 - Page 2 There is no reporting level for gross beta in air particulate 3.1 AIRBORNE RADIOIODINE AND PARTICULATES In 2016, 312 radioiodine and particulate samples were analyzed, 260 from five indicator locations and 52 at the control location. Particulate samples were analyzed weekly for gross beta. A quarterly gamma analysis was performed on the quarterly filter composite (by location).

Radioiodine samples received a weekly gamma analysis.

Western North Carolina wildfires created smoky conditions affecting some air monitoring equipment during 2016 reducing air flow due to filter loading. Air radioiodine and particulate samples collected during these conditions indicated reduced volume, but no sampling deviations or data anomalies were incurred (NCR # 02079384).

Figure 3.1 shows individual sample gross beta results for the indicator location with highest annual mean and the control location samples during 2016. The two sample locations results are similar in concentration and have varied negligibly since preoperational periods.

There were no detectable gamma emitters attributable to plant operations identified for particulate filters analyzed during 2016. Table 3.1-A shows the highest indicator annual mean and control location annual mean for gross beta in air particulate.

There was no detectable I-131 in air radioiodine samples analyzed in 2016. Table 3.1-B shows the highest indicator annual mean and control location annual mean for I-131 since 1984 (preoperational period). The table shows similar concentrations for both the indicator and control locations and the activities decreasing from early in the operational history of the plant. No I-131 activity due to CNS plant operations has been detected since 1987.

K-40 and Be-7 that occur naturally were routinely detected in charcoal cartridges collected during the year.

Figure 3.1

Section 3 - Page 3 Table 3.1-A Mean Concentration of Gross Beta in Air Particulate Year Indicator Location (pCi/m3)

Control Location (pCi/m3) 1984 2.25E-2 1.82E-2 1985 2.12E-2 1.53E-2 1986 3.62E-2 3.41E-2 1987 2.67E-2 2.32E-2 1988 2.29E-2 2.30E-2 1989 2.11E-2 2.13E-2 1990 2.39E-2 2.72E-2 1991 2.19E-2 2.51E-2 1992 1.90E-2 2.01E-2 1993 1.87E-2 1.94E-2 1994 2.03E-2 2.03E-2 1995 4.88E-2 3.23E-2 1996 3.49E-2 2.60E-2 1997 2.83E-2 2.28E-2 1998 2.69E-2 2.12E-2 1999 2.53E-2 2.04E-2 2000 2.28E-2 1.86E-2 2001 1.76E-2 1.78E-2 2002 1.60E-2 1.57E-2 2003 1.54E-2 1.42E-2 2004 1.65E-2 1.49E-2 2005 1.66E-2 1.68E-2 2006 1.74E-2 1.74E-2 2007 1.88E-2 1.86E-2 2008 1.80E-2 1.90E-2 2009 1.78E-2 1.72E-2 2010 2.03E-2 1.90E-2 2011 1.98E-2 1.92E-2 2012 2.09E-2 1.97E-2 2013 1.92E-2 1.82E-2 2014 1.99E-2 1.81E-2 2015 2.06E-2 1.80E-2 2016 2.24E-2 2.07E-2

Section 3 - Page 4 Table 3.1-B Mean Concentration of Air Radioiodine (I-131)

Year Indicator Location (pCi/m3)

Control Location (pCi/m3) 1984 1.30E-3 1.46E-2 1985 4.75E-3 2.38E-2 1986 1.43E-2 1.02E-2 1987 1.38E-2 0.00E0 1988 0.00E0 0.00E0 1989 0.00E0 0.00E0 1990 0.00E0 0.00E0 1991 0.00E0 0.00E0 1992 0.00E0 0.00E0 1993 0.00E0 0.00E0 1994 0.00E0 0.00E0 1995 0.00E0 0.00E0 1996 0.00E0 0.00E0 1997 0.00E0 0.00E0 1998 0.00E0 0.00E0 1999 0.00E0 0.00E0 2000 0.00E0 0.00E0 2001 0.00E0 0.00E0 2002 0.00E0 0.00E0 2003 0.00E0 0.00E0 2004 0.00E0 0.00E0 2005 0.00E0 0.00E0 2006 0.00E0 0.00E0 2007 0.00E0 0.00E0 2008 0.00E0 0.00E0 2009 0.00E0 0.00E0 2010 0.00E0 0.00E0 2011(1) 5.53E-2 5.65E-2 2012 0.00E0 0.00E0 2013 0.00E0 0.00E0 2014(2) 0.00E0 0.00E0 2015 0.00E0 0.00E0 2016 0.00E0 0.00E0 0.00E0 indicates no detectable measurements (1) 2011 concentration affected by Fukushima Daiichi (2) 2014 - Gamma spectroscopy system change

Section 3 - Page 5 3.2 DRINKING WATER Gross beta and gamma spectroscopy were performed on 26 drinking water samples. The samples were composited to create 8 quarterly samples that were analyzed for tritium.

One indicator location was sampled, along with one control location.

No gamma emitting radionuclides attributable to plant operations were identified in 2016 drinking water samples. There have been no gamma emitting radionuclides identified in drinking water samples since 1988.

Table 3.2 shows highest annual mean gross beta concentrations for the indicator location and control location since preoperation. The indicator location (downstream of the plant effluent release point) average concentration was 1.80 pCi/l in 2016 and the control location concentration was 1.75 pCi/l. The table shows that current gross beta levels are not statistically different from preoperational concentrations.

Tritium was detected in the four indicator samples and in the four control samples during 2016. The mean indicator tritium concentration for 2016 was 688 pCi/l, 3.44% of reporting level. The mean control tritium concentration for 2016 was 406 pCi/l, 2.03% of reporting level. Figure 3.2 and Table 3.2 display the highest indicator and control location annual mean concentrations for tritium since 1984.

The concentration of tritium in drinking water is affected by releases from the Catawba plant and the McGuire Nuclear Station, located approximately 40 miles upstream of the Catawba plant on the Catawba River.

The dose for consumption of water was less than one mrem per year, historically and for 2016; therefore low-level iodine analysis is not required.

Section 3 - Page 6 Figure 3.2

Section 3 - Page 7 Table 3.2 Mean Concentration of Radionuclides in Drinking Water Gross Beta (pCi/l)

Tritium (pCi/l)

YEAR Indicator Location Control Location Indicator Location Control Location 1984 4.72 1.83 3.10E-2 3.10E-2 1985 2.70 2.24 4.13E2 4.00E2 1986 3.11 2.26 7.23E2 7.33E2 1987 3.10 2.40 7.80E2 4.80E2 1988 3.60 2.60 6.64E2 0.00E0 1989 3.60 2.90 8.91E2 5.72E2 1990 4.50 3.20 7.03E2 0.00E0 1991 3.70 2.20 7.04E2 0.00E0 1992 3.20 2.40 7.65E2 5.38E2 1993 3.50 2.50 7.06E2 0.00E0 1994 3.30 2.70 0.00E0 0.00E0 1995 4.80 4.50 4.28E2 2.21E2 1996 3.08 3.14 3.71E2 3.27E2 1997 3.74 3.15 3.54E2 2.28E2 1998 2.51 2.44 5.07E2 1.83E2 1999 3.55 2.48 6.71E2 2.70E2 2000 3.04 2.27 5.87E2 3.26E2 2001 3.49 2.30 8.66E2 4.50E2 2002 3.44 2.36 1.22E3 4.11E2 2003 2.27 2.02 6.36E2 2.88E2 2004 1.88 1.69 5.47E2 2.54E2 2005 2.05 1.84 7.69E2 4.50E2 2006 2.30 2.17 1.59E3 7.70E2 2007 2.34 2.21 1.65E3 9.18E2 2008 2.81 2.16 1.25E3 9.16E2 2009 2.07 1.99 6.34E2 6.81E2 2010 1.84 1.80 7.05E2 4.27E2 2011 2.01 1.71 9.73E2 6.36E2 2012 1.89 1.84 9.54E2 5.02E2 2013 1.79 1.59 6.22E2 6.64E2 2014 1.96 1.79 8.21E2 4.37E2 2015 2.48 2.07 5.70E2 5.70E2 2016 1.80 1.75 6.88E2 4.06E2 0.00E0 indicates detectable measurements 1984 - 1986 mean based on all net activity

Section 3 - Page 8 3.3 SURFACE WATER A total of 39 monthly surface water samples were analyzed for gamma emitting radionuclides. The samples were composited to create 12 quarterly samples for tritium analysis. Two indicator locations and one control location were sampled. One indicator location (208) is located near the liquid effluent discharge point.

All 2016 indicator location samples contained tritium with an average concentration of 3,484 pCi/l. Indicator location 208 (Discharge Canal) showed a range of activities from 4,370 to 8,270 pCi/l which had the highest mean concentration of 6,338 pCi/l. Tritium was detected in all four control samples during 2016 with an average concentration of 281 pCi/l.

No gamma emitting radionuclides attributable to plant operations were identified in 2016 surface water samples. During 2015, Co-58 and Co-60 were detected in one indicator surface water sample at location 208 (NCR # 01934713). Table 3.3 summarizes the indicator annual means of radionuclides detected since 1984. Visual inspection of the tabular data did not reveal any increasing trends.

During the third quarter of 2014, Catawba experienced higher than normal levels of mixed fission and activation products in the liquid radioactive waste processing system due to process influent stream chemical changes and larger than normal volumes of non-contaminated water introduced into the system. As system tanks reached storage capacity, liquid radioactive waste was discharged with higher than normal concentrations of mixed fission and activation products. Other radionuclides, such as tritium, were not impacted by this operational occurrence (NCR # 01897053).

Figure 3.3 displays the highest indicator and control annual means for tritium since 1984.

Table 3.3 lists the highest indicator annual means.

The concentration of tritium in surface water is affected by releases from the Catawba plant and the McGuire Nuclear Station, located approximately 40 miles upstream of the Catawba plant on the Catawba River.

Section 3 - Page 9 Figure 3.3 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. A drinking water pathway exists for Catawba Nuclear Station, so this limit does not apply for surface water. See section 3.2 for drinking water results.

Section 3 - Page 10 Table 3.3 Mean Concentrations of Radionuclides in Surface Water (pCi/l)

YEAR Co-58 Co-60 Nb-95 Cs-137 H-3 Indicator H-3 Control 1984 4.59E-1 5.71E-1 6.48E-1 9.08E-1 3.35E2 3.18E2 1985 3.46E0 4.83E-2 2.70E0 8.19E-1 1.19E3 5.05E2 1986 3.10E-1

-4.12E-2 2.05E0 4.85E-1 2.34E3 5.05E2 1987(1) 0.00E0 3.10E0 4.30E0 9.90E0 4.17E3 6.20E2 1988 9.20E0 0.00E0 0.00E0 0.00E0 6.03E3 6.07E2 1989 0.00E0 0.00E0 0.00E0 0.00E0 5.27E3 0.00E0 1990 6.50E0 0.00E0 0.00E0 0.00E0 3.98E3 7.73E2 1991 0.00E0 0.00E0 0.00E0 0.00E0 4.87E3 0.00E0 1992 0.00E0 0.00E0 0.00E0 0.00E0 6.91E3 6.64E2 1993 4.70E0 1.80E0 0.00E0 0.00E0 5.98E3 0.00E0 1994 0.00E0 0.00E0 0.00E0 0.00E0 8.42E3 0.00E0 1995 0.00E0 0.00E0 0.00E0 0.00E0 5.13E3 2.89E2 1996 0.00E0 0.00E0 0.00E0 0.00E0 7.36E3 2.61E2 1997 0.00E0 0.00E0 0.00E0 0.00E0 7.77E3 2.20E2 1998 0.00E0 0.00E0 0.00E0 0.00E0 6.61E3 0.00E0 1999 0.00E0 0.00E0 0.00E0 0.00E0 8.13E3 2.41E2 2000 0.00E0 0.00E0 0.00E0 0.00E0 7.19E3 2.56E2 2001 0.00E0 0.00E0 0.00E0 0.00E0 7.13E3 3.28E2 2002 0.00E0 0.00E0 0.00E0 0.00E0 1.00E4 3.80E2 2003 0.00E0 0.00E0 0.00E0 0.00E0 1.31E4 2.37E2 2004 0.00E0 0.00E0 0.00E0 0.00E0 9.43E3 2.60E2 2005 0.00E0 0.00E0 0.00E0 0.00E0 1.40E4 3.78E2 2006 0.00E0 0.00E0 0.00E0 0.00E0 1.67E4 5.83E2 2007 0.00E0 0.00E0 0.00E0 0.00E0 1.01E4 7.82E2 2008 6.80E0 1.16E1 0.00E0 0.00E0 6.02E3 6.31E2 2009 9.40E0 1.06E1 0.00E0 0.00E0 3.93E3 5.29E2 2010 0.00E0 0.00E0 0.00E0 0.00E0 7.26E3 2.94E2 2011 8.75E0 1.96E1 0.00E0 0.00E0 8.29E3 5.41E2 2012 0.00E0 0.00E0 0.00E0 0.00E0 1.21E4 3.71E2 2013 0.00E0 0.00E0 0.00E0 0.00E0 8.62E3 4.02E2 2014(2) 7.23E0 4.69E0 0.00E0 0.00E0 7.79E3 4.18E2 2015 1.15E1 1.07E0 0.00E0 0.00E0 4.61E3 4.14E2 2016 0.00E0 0.00E0 0.00E0 0.00E0 6.34E3 2.81E2 0.00E0 indicates no detectable measurements 1984 - 1986 mean based on all net activity (1) 1987 - Gamma spectroscopy system change (2) 2014 - Gamma spectroscopy system change

Section 3 - Page 11 3.4 MILK A total of 26 milk samples was analyzed by gamma spectroscopy and low level iodine during 2016. There was one control location sampled. No indicator dairies were identified by the 2016 land use census.

There were no gamma emitting radionuclides attributable to plant operations identified in milk samples in 2016. Cs-137 is the only radionuclide, other than naturally occurring, reported in milk samples since 1996. Cs-137 in milk is not unusual. It is a constituent of nuclear weapons test fallout and nuclear plant accidents and has been observed periodically in samples from indicator and control locations since the preoperational period. Airborne Cs-137 has not been released from the plant since 1992.

Table 3.4 lists highest indicator location annual mean and control location annual mean for Cs-137 since the preoperational period. K-40 is a naturally occurring radionuclide observed in milk samples in 2016.

Section 3 - Page 12 Table 3.4 Mean Concentration of Radionuclides in Milk YEAR Cs-137 Indicator (pCi/l)

Cs-137 Control (pCi/l) 1984 2.95E0 2.98E0 1985 2.11E0 2.12E0 1986 3.76E0 4.54E0 1987(1) 5.00E0 5.50E0 1988 3.20E0 3.80E0 1989 0.00E0 0.00E0 1990 8.00E0 6.70E0 1991 0.00E0 0.00E0 1992 3.40E0 5.00E0 1993 5.00E0 0.00E0 1994 2.80E0 0.00E0 1995 8.60E0 0.00E0 1996 6.05E0 0.00E0 1997 0.00E0 0.00E0 1998 0.00E0 0.00E0 1999 0.00E0 0.00E0 2000 0.00E0 0.00E0 2001 0.00E0 0.00E0 2002 0.00E0 0.00E0 2003 0.00E0 0.00E0 2004 No Indicator Location 0.00E0 2005 No Indicator Location 0.00E0 2006 No Indicator Location 0.00E0 2007 No Indicator Location 0.00E0 2008 No Indicator Location 0.00E0 2009 No Indicator Location 0.00E0 2010 No Indicator Location 0.00E0 2011 No Indicator Location 0.00E0 2012 No Indicator Location 0.00E0 2013 No Indicator Location 0.00E0 2014(2)

No Indicator Location 0.00E0 2015 No Indicator Location 0.00E0 2016 No Indicator Location 0.00E0 0.00E0 indicates no detectable measurements 1984 - 1986 mean based on all net activity (1) 1987 - Gamma spectroscopy system change (2) 2014 - Gamma spectroscopy system change

Section 3 - Page 13 3.5 BROADLEAF VEGETATION Gamma spectroscopy was performed on 60 broadleaf vegetation samples during 2016.

Four indicator locations and one control location were sampled. There were no gamma emitting radionuclides attributable to plant operations identified in any indicator or control location broadleaf vegetation samples in 2016.

Cs-137 is the only gamma emitting radionuclide, other than naturally occurring, reported in vegetation samples. It is not unusual for Cs-137 to be present in vegetation. It is a constituent of nuclear weapons test fallout and nuclear plant accidents and has been observed in samples from indicator and control locations since the preoperational period. Table 3.6 lists the highest indicator location annual mean and control location annual mean for Cs-137 since early in the stations operational history. Visual inspection of the tabular data did not reveal any increasing trends.

Figure 3.5 shows indicator and control annual means for Cs-137 in vegetation since 1984.

Values shown from 1984 to 2016 show a stable trend for Cs-137 in vegetation. No airborne Cs-137 has been released from the plant since 1992.

K-40 and Be-7 are naturally occurring radionuclides that were observed in broadleaf vegetation samples in 2016.

Figure 3.5

Section 3 - Page 14 Table 3.5 Mean Concentration of Radionuclides in Broadleaf Vegetation YEAR Cs-137 Indicator (pCi/kg)

Cs-137 Control (pCi/kg) 1984 3.76E1 1.30E1 1985 5.48E1 4.16E1 1986 7.42E1 2.22E1 1987(1) 6.10E1 5.10E1 1988 9.10E1 7.40E1 1989 1.00E2 4.80E1 1990 7.70E1 5.80E1 1991 1.98E2 8.60E1 1992 9.70E1 0.00E0 1993 1.13E2 3.20E1 1994 7.00E1 0.00E0 1995 3.60E1 0.00E0 1996 2.23E2 6.22E1 1997 7.57E1 0.00E0 1998 6.53E1 0.00E0 1999 1.08E2 0.00E0 2000 1.04E2 0.00E0 2001 3.76E1 0.00E0 2002 7.02E1 0.00E0 2003 4.96E1 2.40E1 2004 5.45E1 0.00E0 2005 5.48E1 0.00E0 2006 5.79E1 0.00E0 2007 6.31E1 0.00E0 2008 4.44E1 0.00E0 2009 4.25E1 0.00E0 2010 3.77E1 0.00E0 2011 2.62E1 0.00E0 2012 0.00E0 0.00E0 2013 0.00E0 0.00E0 2014(2) 3.72E1 0.00E0 2015 4.29E1 0.00E0 2016 0.00E0 0.00E0 0.00E0 indicates no detectable measurements 1984 - 1986 mean based on all net activity 2011 concentration affected by Fukushima Daiichi (1) 1987 - Gamma spectroscopy system change (2) 2014 - Gamma spectroscopy system change

Section 3 - Page 15 3.6 FOOD PRODUCTS Collection of food product samples (crops) from an irrigated garden began in 1989. The irrigated garden is located on Lake Wylie downstream from CNS, Location 260. During the 2016 growing season nine samples were collected and analyzed for gamma radionuclides. There were no gamma emitting radionuclides attributable to plant operations identified in food product samples in 2016. There is no control location for this media type.

Table 3.7 shows Cs-137 indicator location highest annual mean concentrations since 1989.

K-40 and Be-7 are naturally occurring radionuclides that were observed in food product samples in 2016.

Table 3.6 Mean Concentration of Radionuclides in Food Products YEAR Cs-137 Indicator (pCi/kg) 1989 0.00E0 1990 0.00E0 1991 0.00E0 1992 0.00E0 1993 2.50E1 1994 0.00E0 1995 0.00E0 1996 0.00E0 1997 0.00E0 1998 0.00E0 1999 0.00E0 2000 0.00E0 2001 0.00E0 2002 0.00E0 2003 0.00E0 2004 0.00E0 2005 0.00E0 2006 0.00E0 2007 0.00E0 2008 0.00E0 2009 0.00E0 2010 0.00E0 2011 0.00E0 2012 0.00E0 2013 0.00E0 2014(1) 0.00E0 2015 0.00E0 2016 0.00E0 0.00E0 indicates no detectable measurements There is no control location for Food Products.

(1) 2014 - Gamma spectroscopy system change

Section 3 - Page 16 3.7 FISH Gamma spectroscopy was performed on 12 fish samples collected during 2016. One downstream indicator location and one control location were sampled.

Co-58, Co-60, and Cs-137 are normally the predominant radionuclides identified in fish samples. There were no gamma emitting radionuclides attributable to plant operations identified in any fish samples in 2016.

Figures 3.7-1, 3.7-2, and 3.7-3 are graphs displaying annual mean concentrations for Co-58, Co-60, and Cs-137. Table 3.7 depicts the highest indicator location annual mean for radionuclides detected. In addition, radionuclides identified in fish samples since 1988 have been included in the table. Overall, radionuclides have not shown a significant trend or accumulation.

K-40 was observed in some fish samples collected during 2016.

Figure 3.7-1

Section 3 - Page 17 Figure 3.7-2 Figure 3.7-3

Section 3 - Page 18 Table 3.7 Mean Concentrations of Radionuclides in Fish (pCi/kg)

Year Mn-54 Co-58 Co-60 Cs-134 Cs-137 Nb-95 Fe-59 Sb-122 Sb-125 1984 3.07E0 3.00E0 6.11E-1

-5.32E0 1.83E0 0.00E0 0.00E0 0.00E0 0.00E0 1985 7.68E-1 3.40E1 9.11E0 3.22E0 1.28E1 5.07E0 0.00E0 0.00E0 0.00E0 1986 2.01E1 1.86E2 4.01E1 3.51E1 9.29E1 0.00E0 7.30E0 0.00E0 0.00E0 1987(1) 7.24E0 7.57E1 4.81E1 3.83E0 4.27E1 5.40E0 0.00E0 0.00E0 0.00E0 1988 2.85E1 1.40E2 9.70E1 1.67E1 8.24E1 0.00E0 0.00E0 0.00E0 0.00E0 1989 8.28E0 1.33E2 3.83E1 1.47E1 4.37E1 8.58E-1 0.00E0 0.00E0 0.00E0 1990 2.51E1 1.75E2 7.77E1 1.32E1 4.66E1 3.33E0 0.00E0 7.00E0 9.25E0 1991 3.15E1 1.46E2 1.29E2 1.03E1 4.60E1 7.90E-1 2.30E0 0.00E0 7.45E0 1992 1.34E1 9.02E1 6.20E1 1.27E1 4.61E1 0.00E0 0.00E0 0.00E0 0.00E0 1993 2.14E1 3.58E2 1.21E2 2.73E0 2.56E1 0.00E0 0.00E0 0.00E0 0.00E0 1994 1.91E0 4.75E1 1.81E1 0.00E0 1.75E1 0.00E0 0.00E0 0.00E0 1.45E1 1995 5.65E1 8.90E2 2.66E2 0.00E0 6.77E1 1.38E1 0.00E0 0.00E0 0.00E0 1996 0.00E0 5.95E1 6.68E1 0.00E0 3.02E1 0.00E0 0.00E0 0.00E0 0.00E0 1997 0.00E0 4.93E1 9.88E0 0.00E0 2.74E1 0.00E0 0.00E0 0.00E0 0.00E0 1998 0.00E0 6.44E1 2.86E1 0.00E0 1.58E1 0.00E0 0.00E0 0.00E0 0.00E0 1999 0.00E0 3.12E1 2.71E1 0.00E0 1.87E1 0.00E0 0.00E0 0.00E0 0.00E0 2000 0.00E0 2.13E2 2.69E2 0.00E0 1.52E1 0.00E0 0.00E0 0.00E0 0.00E0 2001 0.00E0 4.66E1 0.00E0 0.00E0 2.08E1 0.00E0 0.00E0 0.00E0 0.00E0 2002 0.00E0 5.23E1 7.00E1 0.00E0 1.73E1 0.00E0 0.00E0 0.00E0 0.00E0 2003 0.00E0 1.43E2 2.61E1 0.00E0 1.19E1 0.00E0 0.00E0 0.00E0 0.00E0 2004 4.92E1 1.81E1 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2005 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2006 0.00E0 0.00E0 0.00E0 0.00E0 1.44E1 0.00E0 0.00E0 0.00E0 0.00E0 2007 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2008 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2009 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2010 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2011 0.00E0 0.00E0 0.00E0 0.00E0 2.16E1 0.00E0 0.00E0 0.00E0 0.00E0 2012 0.00E0 0.00E0 0.00E0 0.00E0 1.84E1 0.00E0 0.00E0 0.00E0 0.00E0 2013 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2014(2) 0.00E0 0.00E0 0.00E0 0.00E0 1.10E1 0.00E0 0.00E0 0.00E0 0.00E0 2015 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2016 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 indicates no detectable measurements 1984 - 1986 mean based on all net activity (1) 1987 - Gamma spectroscopy system change (2) 2014 - Gamma spectroscopy system change

Section 3 - Page 19 3.8 SHORELINE SEDIMENT During 2016, a total of 6 shoreline sediment samples was analyzed, four from two indicator locations and two from the control location.

Co-58, Co-60, and Cs-137 are normally the predominant radionuclides identified in shoreline sediment samples. Co-60 was identified in indicator samples collected from location 208 (Discharge Canal), which is the closest location to the plants liquid effluent release point. Co-60 was identified with an annual mean concentration of 131 pCi/kg.

There were no gamma emitting radionuclides attributable to plant operations identified in samples from the other indicator location (210) or the control location.

During the third quarter of 2014, Catawba experienced higher than normal levels of mixed fission and activation products in the liquid radioactive waste processing system due to process influent stream chemical changes and larger than normal volumes of non-contaminated water introduced into the system. As system tanks reached storage capacity, liquid radioactive waste was discharged with higher than normal concentrations of mixed fission and activation products (NCR # 01897053).

Table 3.9 lists highest indicator location annual mean since 1984. Included in the table are radionuclides that have been identified in shoreline sediment samples since 1988.

Figures 3.8-1, 3.8-2, and 3.8-3 are graphs displaying annual mean concentrations for Co-58, Co-60, and Cs-137.

Naturally occurring K-40 was observed in some shoreline sediment samples collected during 2016.

Figure 3.8-1 There is no reporting level for Co-58 in Shoreline Sediment

Section 3 - Page 20 Figure 3.8-2 There is no reporting level for Co-60 in Shoreline Sediment Figure 3.8-3 There is no reporting level for Cs-137 in Shoreline Sediment

Section 3 - Page 21 Table 3.8 Mean Concentrations of Radionuclides in Shoreline Sediment (pCi/kg)

Year Mn-54 Co-58 Co-60 Nb-95 Zr-95 Cs-134 Cs-137 Co-57 Sb-125 1984 1.03E0 4.40E0

-2.34E0 0.00E0 0.00E0 3.19E1 1.07E2 0.00E0 0.00E0 1985

-3.12E0 1.16E2 5.18E0 0.00E0 0.00E0 2.11E2 2.97E2 0.00E0 0.00E0 1986 1.09E2 3.79E2 2.05E2 0.00E0 3.96E1 6.50E1 1.61E2 0.00E0 0.00E0 1987(1) 8.83E1 4.08E2 1.61E2 4.22E1 0.00E0 6.08E1 1.26E2 0.00E0 0.00E0 1988 1.07E2 3.29E2 2.63E2 2.28E1 7.54E0 2.59E1 1.07E2 7.65E-1 3.68E0 1989 4.58E1 1.94E2 1.21E2 5.02E0 0.00E0 1.65E1 5.77E1 0.00E0 1.57E1 1990 5.39E1 2.08E2 1.77E2 0.00E0 0.00E0 1.66E1 8.18E1 0.00E0 7.15E0 1991 8.50E1 3.70E2 4.19E2 5.30E0 0.00E0 1.82E1 8.33E1 1.20E0 1.50E1 1992 1.17E2 1.13E3 5.80E2 3.50E0 0.00E0 1.69E1 1.07E2 3.00E0 2.70E1 1993 1.33E2 1.07E3 1.04E3 0.00E0 0.00E0 2.80E1 1.26E2 2.47E1 2.16E2 1994 4.93E1 7.98E2 5.73E2 0.00E0 0.00E0 5.67E0 1.07E2 4.38E0 4.60E1 1995 1.02E2 1.33E3 8.65E2 1.13E2 0.00E0 0.00E0 8.50E1 3.69E1 1.49E2 1996 8.73E1 3.39E2 5.81E2 0.00E0 0.00E0 0.00E0 8.30E1 0.00E0 1.96E2 1997 6.96E1 5.90E2 7.64E2 0.00E0 0.00E0 0.00E0 1.43E2 0.00E0 1.76E2 1998 3.07E1 1.88E2 2.30E2 0.00E0 0.00E0 0.00E0 7.11E1 0.00E0 0.00E0 1999 7.28E1 2.29E2 4.39E2 0.00E0 0.00E0 0.00E0 9.42E1 0.00E0 1.40E2 2000 0.00E0 3.90E1 1.03E2 0.00E0 0.00E0 0.00E0 4.96E1 0.00E0 0.00E0 2001 3.86E1 8.27E1 3.29E2 0.00E0 0.00E0 0.00E0 5.58E1 0.00E0 0.00E0 2002 3.51E1 2.41E2 2.22E2 0.00E0 0.00E0 0.00E0 8.83E1 0.00E0 0.00E0 2003 2.17E1 8.75E1 1.08E2 0.00E0 0.00E0 0.00E0 2.69E1 0.00E0 0.00E0 2004 6.60E1 2.67E2 3.83E2 0.00E0 0.00E0 0.00E0 3.79E1 0.00E0 0.00E0 2005 0.00E0 1.61E2 1.41E2 0.00E0 0.00E0 0.00E0 3.04E1 0.00E0 0.00E0 2006 0.00E0 5.40E1 1.11E2 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2007 0.00E0 8.77E1 9.46E1 0.00E0 0.00E0 0.00E0 6.13E1 0.00E0 0.00E0 2008 0.00E0 1.48E2 6.24E1 0.00E0 0.00E0 0.00E0 2.57E1 0.00E0 0.00E0 2009 0.00E0 1.10E2 1.04E2 0.00E0 0.00E0 0.00E0 2.27E1 0.00E0 0.00E0 2010 0.00E0 6.56E1 1.37E2 0.00E0 0.00E0 0.00E0 2.56E1 0.00E0 0.00E0 2011 0.00E0 8.36E1 2.36E2 0.00E0 0.00E0 3.62E1 4.33E1 1.05E1 0.00E0 2012 0.00E0 5.59E1 1.70E2 0.00E0 0.00E0 0.00E0 3.15E1 0.00E0 0.00E0 2013 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 2014(2) 6.84E1 8.87E2 7.90E2 0.00E0 0.00E0 0.00E0 2.46E1 0.00E0 0.00E0 2015 0.00E0 6.73E1 1.61E2 0.00E0 0.00E0 0.00E0 8.75E0 0.00E0 0.00E0 2016 0.00E0 0.00E0 1.31E2 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 0.00E0 indicates no detectable measurements 1984 - 1986 mean based on all net activity (1) 1987 - Gamma spectroscopy system change (2) 2014 - Gamma spectroscopy system change

Section 3 - Page 22 3.9 DIRECT GAMMA RADIATION 3.9.1 ENVIRONMENTAL TLD Catawba is licensed with an exclusion area boundary defined by UFSAR Section 2.1.1.2 as a 2500 foot radius from station center. This is the same boundary established for determining radioactive effluent release limits. No permanent public access is permitted within the exclusion area. TLD locations designated as "inner ring" are within a 1 mile radius from station center and all are used as indicators. TLD locations designated as "outer ring" are outside the 1 mile "inner ring" but within a 5 mile radius of station center. All outer ring TLD locations are used as indicators. A subset of TLD locations within a 7 to 11 mile radius from station center are designated as "special interest." The three "control" locations are greater than 7 miles from station center. These locations were chosen to reduce the probability of influence from Catawba operation on data. The control locations are not used as background subtraction in the TLD analysis. Their purpose is to provide a comparison to indicator locations.

In 2016, 162 total TLDs were analyzed, 152 at indicator locations and 10 at control locations. TLDs are collected and analyzed quarterly. Transit and laboratory background dose is determined and subtracted from gross field readings as required by ANSI N545-1975. Based on Appendix B TLD data, the highest annual total dose was 89.6 mrem at indicator location 232, 4.18 miles NE of station center. Figure 3.9 and Table 3.9-A show TLD inner ring, outer ring, and control location annual averages in mrem per year. Data is provided from 1984 when TLD locations were added and arranged in an inner ring and outer ring configuration. Preoperational data is also provided in the table. As shown in the graph, doses measured by environmental TLDs show little or no change since the current TLD system was implemented. Comparing data from the 2016 Catawba Annual Radiological Effluent Release Report (ARERR), dose to a member of the public resulting from gaseous effluent releases at Catawba is a small fraction of measured TLD dose. Therefore, it can be concluded that gaseous effluents from Catawba had negligible impact on measured TLD values.

Starting in 2014, enhanced analytical methods were implemented. Quarterly and annual baseline dose was determined using appropriate statistical methods considering data from 2000 through 2012. Quarterly and annual dose for 2016 was compared to baseline values to determine if an Investigation Level had been exceeded for evaluation of potential dose to a member of the public. No TLD location exceeded the Quarterly or Annual Investigation Level in 2016, therefore no evaluation of dose to a member of the public from direct or scattered radiation was performed. Table 3.9-B summarizes the data.

A TLD intercomparison program is conducted as part of the quality assurance program. Results of this program are included in section 5.7.

Section 3 - Page 23 3.9.2 ISFSI The Catawba ISFSI began operation in 2007. It is located approximately 0.2 miles north of station center in a secured area specifically constructed to provide dry storage for spent nuclear fuel. The ISFSI employs the NAC-UMS and MAGNASTOR vertical storage designs. Irradiated fuel assemblies are confined, protected, and shielded by a reinforced concrete modules. Both systems are completely passive and designed to provide radiation shielding and safe confinement for a range of accident conditions and natural events. Both systems use a passive natural circulation ventilation system to remove decay heat from the modules. No radiological liquid or gaseous effluents are expected from the passive storage provided by the ISFSI. Therefore any dose to offsite locations would be from direct and scattered gamma radiation.

Environmental TLD results described in 3.9.1 above are reviewed quarterly to identify trends and demonstrate compliance with dose and dose rate limits at the 2500 foot exclusion area boundary. Additional TLD locations not associated with REMP are presently located on the Catawba protected area fence near the ISFSI and on the ISFSI boundary. These are used to demonstrate compliance with occupational exposure controls and augment REMP TLD results. Doses measured by environmental TLDs show little or no change since the ISFSI began operation.

Figure 3.9 There is no reporting level for Direct Radiation (TLD)

Section 3 - Page 24 Table 3.9-A Direct Gamma Radiation (TLD) Results(1)

Year Inner Ring Average (mrem/yr)

Outer Ring Average (mrem/yr)

Control Average (mrem/yr) 1984*

8.31E1 7.85E1 7.53E1 1985 1.11E2 1.03E2 1.03E2 1986 9.91E1 9.36E1 8.97E1 1987 9.22E1 8.30E1 8.05E1 1988 7.09E1 6.68E1 6.37E1 1989 6.37E1 5.78E1 5.70E1 1990 4.94E1 4.23E1 3.71E1 1991 5.89E1 5.14E1 4.44E1 1992 7.64E1 6.89E1 6.13E1 1993 6.68E1 5.79E1 5.09E1 1994 7.25E1 6.58E1 6.07E1 1995 9.46E1 8.52E1 7.68E1 1996 8.01E1 7.02E1 6.04E1 1997 7.83E1 6.83E1 5.45E1 1998 8.10E1 7.05E1 6.14E1 1999 7.60E1 6.47E1 5.49E1 2000 7.13E1 5.98E1 4.98E1 2001 7.69E1 6.72E1 5.24E1 2002 7.49E1 6.60E1 5.24E1 2003 7.76E1 6.90E1 5.32E1 2004 7.47E1 7.01E1 5.28E1 2005 7.58E1 7.15E1 5.48E1 2006 7.31E1 6.99E1 5.43E1 2007 7.65E1 7.26E1 5.62E1 2008 7.74E1 7.32E1 5.74E1 2009 7.73E1 6.94E1 5.70E1 2010 7.74E1 6.80E1 5.43E1 2011 7.50E1 6.67E1 5.54E1 2012 7.61E1 6.80E1 5.83E1 2013 7.60E1 6.92E1 5.65E1 2014 7.07E1 6.60E1 5.40E1 2015 7.51E1 7.14E1 6.00E1 2016 7.00E1 6.61E1 5.37E1

Preoperational Data (1) 2014 AREOR, tabular results converted from mR/yr to mrem/yr (n

0.95)

Section 3 - Page 25 Table 3.9-B Direct Gamma Radiation (TLD) Catawba 2016 Investigation Level Catawba 2016 MDDQ: 6 Catawba 2016 MDDA: 11 Quarterly (mrem)

Annual(mrem)

Location BQ MQQ1 MQQ2 MQQ3 MQQ4 LQQ1 LQQ2 LQQ3 LQQ4 BA MA LA 200

17.1

18.3

15.0

14.5 19.1 ND ND ND ND

69.6

67.0 ND 201

17.2

18.0

16.3

13.4 16.9 ND ND ND ND

69.0

64.6 ND 203

20.1

19.2

15.6

15.8 19.1 ND ND ND ND

78.7

69.6 ND 204

17.0

16.7

14.0

14.3 18.9 ND ND ND ND

70.3

63.9 ND 205

20.4

18.3

16.5

16.7 19.3 ND ND ND ND

81.4

70.9 ND 206

21.1

22.6

19.6

19.4 22.1 ND ND ND ND

85.2

83.7 ND 207

20.9

21.1

17.5

17.2 19.7 ND ND ND ND

84.7

75.4 ND 212

15.9

16.8

14.3

13.9 17.9 ND ND ND ND

64.0

62.8 ND 217

11.3

14.0

(1)

10.6

(2)

ND ND ND ND

46.1

49.2 ND 222

16.8

17.7

14.4

14.7 17.9 ND ND ND ND

67.3

64.7 ND 223

19.6

20.9

17.5

18.8 20.0 ND ND ND ND

78.6

77.1 ND 225

18.7

20.0

(3)

17.9 18.6 ND ND ND ND

74.8

75.2 ND 226

17.0

17.4

15.2

17.4 16.8 ND ND ND ND

70.6

66.8 ND 227

17.9

17.7

16.4

16.2 18.0 ND ND ND ND

72.2

68.2 ND 228

17.5

18.4

17.1

16.2 18.4 ND ND ND ND

70.0

70.1 ND 229

22.0

24.0

21.6

20.0 21.8 ND ND ND ND

88.6

87.4 ND 230

12.4

13.1

11.6

11.1 12.4 ND ND ND ND

50.5

48.2 ND 231

19.3

16.3

15.2

16.0 19.2 ND ND ND ND

77.1

66.7 ND 232

21.3

22.2

20.6

20.9 25.8 ND ND ND ND

86.2

89.6 ND 233

14.5

15.5

13.0

12.4 15.3 ND ND ND ND

58.3

56.1 ND 234

17.0

17.4

15.2

15.8 18.4 ND ND ND ND

67.9

66.8 ND 235

16.2

17.0

15.8

14.9 18.0 ND ND ND ND

64.8

65.6 ND 236

21.2

21.9

20.1

18.5 22.4 ND ND ND ND

85.5

83.0 ND 237

21.0

22.2

21.1

19.2 22.8 ND ND ND ND

90.1

85.3 ND 238

16.2

17.6

16.8

15.1 17.3 ND ND ND ND

64.5

66.8 ND 239

17.9

19.7

16.2

16.1 19.0 ND ND ND ND

72.2

70.9 ND 240

12.3

13.1

10.9

10.5 13.3 ND ND ND ND

50.1

47.9 ND 241

13.1

12.8

11.9

11.4 12.4 ND ND ND ND

52.6

48.5 ND 242

16.2

16.7

15.8

14.1 16.9 ND ND ND ND

65.0

63.5 ND 243

16.2

15.9

15.5

13.8 16.5 ND ND ND ND

65.1

61.7 ND 244

16.7

19.4

17.3

17.6 21.0 ND ND ND ND

68.9

75.2 ND 245

16.3

15.1

12.9 17.0 ND ND ND ND

66.4

61.4 ND 246

14.6

15.3

13.7

11.4 15.9 ND ND ND ND

59.4

56.2 ND 247

12.9

13.1

11.4

10.7 13.3 ND ND ND ND

51.9

48.5 ND 248

14.2

15.3

13.0

11.3 14.6 ND ND ND ND

56.9

54.2 ND 249

17.1

16.2

17.2

13.2 15.9 ND ND ND ND

68.2

62.5 ND 250

16.2

16.6

16.3

14.3 15.4 ND ND ND ND

65.0

62.7 ND 251

16.6

17.5

14.8

14.5 14.3 ND ND ND ND

66.0

61.2 ND 255

20.0

20.3

18.6

19.7 20.5 ND ND ND ND

80.1

79.1 ND 256

19.9

20.0

20.4

19.0 21.5 ND ND ND ND

79.7

80.8 ND 258

18.9

20.5

17.2

16.1 18.6 ND ND ND ND

76.9

72.4 ND

*MAdeterminedbynormalizingavailablequarterlydatato4fullquarters (1)Location21716Q2unavailableattimeofcollection(NCR#02038698)

(2)Location21716Q4unavailableattimeofcollection(NCR#02087109)

(3)Location22516Q2unavailableattimeofcollection(NCR#02038809),butsecondaryTLDlocationwascollected.

indicatesnodataresultingfrommissingTLD,erroneousTLDreading,oromittedafterinvestigation

Note

Note: Data may be omitted after investigation considering the following: (1) Other TLD locations data from upwind, downwind, and adjacent sectors (2) Review of documentation on location's characteristics, geography, topography, etc. (3) Comparison with other radiological data (i.e. gaseous effluent releases, direct radiation reports, surveys, dose calculations, Area TLDs, etc.).

Section 3 - Page 26 Table 3.9-B definition of terms x

MDDQ = minimum differential dose, quarterly, 3 times 90th percentile sQ determined from analysis in mrem x

MDDA = minimum differential dose, annual, 3 times 90th percentile sA determined from analysis in mrem x

BQ = Quarterly baseline (mrem) x MQ = locations 91 day standard quarter normalized dose (mrem per standard quarter) x LQ = quarterly investigation level dose (mrem) x BA = baseline background dose (mrem) (annual) x MA = annual monitoring data - Ma determined by normalizing available quarterly data to 4 full quarters x

LA = annual investigation level dose (mrem) x ND = not detected

Section 3 - Page 27 3.10 LAND USE CENSUS The 2016 Annual Land Use Census was conducted July 13, July 14, and July 20, 2016 as required by SLC 16.11-14. Table 3.10 summarizes census results. A map indicating identified locations is shown in Figure 3.10.

During the 2016 census no irrigated gardens (superior to existing gardens) or milk locations were identified. The nearest residence is located in the NE sector at 0.56 miles.

No environmental program changes were required as a result of the 2016 land use census.

Table 3.10 Catawba 2016 Land Use Census Results Sector Distance (Miles)

Sector Distance (Miles)

N Nearest Residence Nearest Garden (Irr.)

Nearest Milk Animal 0.63 1.55 S

Nearest Residence Nearest Garden Nearest Milk Animal 0.63 1.25 NNE Nearest Residence Nearest Garden Nearest Milk Animal 0.66 0.69 SSW Nearest Residence Nearest Garden Nearest Milk Animal 0.83 1.33 NE Nearest Residence Nearest Garden (Irr.)

Nearest Milk Animal 0.56 0.67 SW Nearest Residence Nearest Garden Nearest Milk Animal 0.63 2.02 ENE Nearest Residence Nearest Garden (Irr.)

Nearest Milk Animal 0.61 1.44 WSW Nearest Residence Nearest Garden Nearest Milk Animal 0.57 0.91 E

Nearest Residence Nearest Garden (Irr.)

Nearest Milk Animal 0.65 2.26 W

Nearest Residence Nearest Garden Nearest Milk Animal 0.68 0.96 ESE Nearest Residence Nearest Garden Nearest Milk Animal 0.84 1.29 WNW Nearest Residence Nearest Garden Nearest Milk Animal 1.10 2.53 SE Nearest Residence Nearest Garden (Irr.)

Nearest Milk Animal 0.97 1.50 NW Nearest Residence Nearest Garden Nearest Milk Animal 1.27 1.54 SSE Nearest Residence Nearest Garden Nearest Milk Animal 0.74 1.64 NNW Nearest Residence Nearest Garden Nearest Milk Animal 0.86 2.13

- indicates no occurrences within the 5 mile radius (Irr.) indicates irrigated garden

Section 3 - Page 28 Figure 3.10

Section 4 - Page 1 4.0 EVALUATION OF DOSE 4.1 DOSE FROM ENVIRONMENTAL MEASUREMENTS Annual doses to maximum exposed individuals were estimated based on measured concentrations of radionuclides in 2016 CNS REMP samples. The primary purpose of estimating doses based on sample results is to allow comparison to effluent program dose estimates.

Doses based on REMP sample results were calculated using the methodology and data presented in NRC Regulatory Guide 1.109. Measured radionuclide concentrations, averaged over the entire year for a specific radionuclide, indicator location, and sample type, were used to calculate REMP-based doses, after subtracting the applicable average background concentration (as measured at the corresponding control location).

Regulatory Guide 1.109 consumption rates for the maximum exposed individual were used in the calculations. A dose factor of zero was assumed when the guide listed NO DATA as the dose factor for a given radionuclide and organ.

Maximum dose estimates (Highest Annual Mean Concentration) based on drinking water, fish, and shoreline sediment sample results are reported in Table 4.1-A. The individual critical population and pathway dose calculations are reported in Table 4.1-B.

REMP-based dose estimates are not reported for airborne radioiodine, airborne particulate, milk, or ground water sample types because no radionuclides attributable to CNS operations were detected. Naturally occurring K-40 and Be-7 were detected in some samples but were not included in any REMP-based dose estimates. Dose estimates are not reported for surface water because sampled surface water is not considered to be a potable drinking water source although surface water tritium concentrations are used in calculating doses from fish. Exposure estimates based upon REMP TLD results are discussed in Section 3.9.

The maximum environmental organ dose estimate for any single sample type (excluding TLD results) collected during 2016 was 2.92E-2 mrem to the child liver, total body, thyroid, kidney, lung, and GI-LLI from the consumption of drinking water.

4.2 ESTIMATED DOSE FROM RELEASES Throughout the year, dose estimates were calculated based on actual 2016 liquid and gaseous effluent release data. Effluent-based dose estimates were calculated using the RETDAS computer program which employs methodology and data presented in NRC Regulatory Guide 1.109. These doses are shown in Table 4.1-A along with the corresponding REMP-based dose estimates. Summaries of RETDAS dose calculations are reported in the Annual Radioactive Effluent Release Report.

Section 4 - Page 2 The effluent-based liquid release doses are summations of the dose contributions from the drinking water, fish, and shoreline pathways. For iodine, particulate, and tritium exposure the effluent-based gaseous release doses are summations of the dose contributors from ground/plane, inhalation, milk and vegetation pathways.

4.3 COMPARISON OF DOSES The environmental and effluent dose estimates given in Table 4.1-A agree reasonably well. The similarity of the doses indicate that the radioactivity levels in the environment do not differ significantly from those expected based on effluent measurements and modeling of the environmental exposure pathways. This indicates that effluent program dose estimates are both valid and reasonably conservative.

There are some differences in how effluent and environmental doses are calculated that affect the comparison. Doses calculated from environmental data are conservative because they are based on a mean that includes only samples with a net positive activity versus a mean that includes all sample results (i.e. zero results are not included in the mean). Also, airborne tritium is not measured in environmental samples but is used to calculate effluent doses.

Additionally, in 2010 Catawba began reporting estimated dose from effluent Carbon 14 (C-14). This change came about with the issuing of Regulatory Guide 1.21, Revision 2, Measuring, Evaluating and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste. A description of this change is found in the 2010 Annual Radiological Effluent Release Report. C-14 is not easily measured in the environment and therefore, environmental and effluent doses from C-14 cannot be compared directly.

In calculations based on environmental data, the liquid release pathways of drinking water, fish, and shoreline sediment were the predominant dose pathways. Liquid effluent release data indicated drinking water, fish, and shoreline sediment as the predominant dose pathways. The maximum total organ dose based on 2016 environmental sample results was 3.71E-2 mrem to the child total body. The maximum total organ dose of 8.43E-2 mrem for liquid effluent-based estimates was to the child liver.

In calculations based on gaseous release pathways, vegetation was the predominant dose pathway based on effluent data. The maximum total organ dose based on 2016 gaseous effluent estimates was 5.91E0 mrem to the child bone, with C-14 being the primary dose contributor. No radioactivity was detected from gaseous pathways in environmental samples; therefore, there is no calculated dose.

The doses calculated do not exceed 40CFR190 or 10CFR50 dose commitment limits for members of the public. Doses to members of the public attributable to the operation of CNS are being maintained well within regulatory limits and are described in the Annual Radiological Effluent Release Report (ARERR).

TABLE 4.1-A Page 1 of 2 CATAWBA NUCLEAR STATION 2016 ENVIRONMENTAL AND EFFLUENT DOSE COMPARISON LIQUID RELEASE PATHWAY Organ Environmental or Effluent Data Critical Age (1)

Critical Pathway (2)

Location Maximum Dose (3)

(mrem)

Skin Environmental Teen Shoreline Sediment 208 (0.45 mi S) 1.40E-03 Skin Effluent Teen Shoreline Sediment Discharge Pt.

1.63E-03 Bone Environmental 0.00E+00 Bone Effluent Child Fresh Water Fish Discharge Pt.

1.46E-02 Liver Environmental Child Drinking Water 214 (7.30 mi SSE) 3.68E-02 Liver Effluent Child Drinking Water 7.30 mi SSE 8.43E-02 T. Body Environmental Child Drinking Water 214 (7.30 mi SSE) 3.71E-02 T. Body Effluent Child Drinking Water 7.30 mi SSE 8.25E-02 Thyroid Environmental Child Drinking Water 214 (7.30 mi SSE) 3.68E-02 Thyroid Effluent Child Drinking Water 7.30 mi SSE 8.15E-02 Kidney Environmental Child Drinking Water 214 (7.30 mi SSE) 3.68E-02 Kidney Effluent Child Drinking Water 7.30 mi SSE 8.21E-02 Lung Environmental Child Drinking Water 214 (7.30 mi SSE) 3.68E-02 Lung Effluent Child Drinking Water 7.30 mi SSE 8.18E-02 GI-LLI Environmental Child Drinking Water 214 (7.30 mi SSE) 3.68E-02 GI-LLI Effluent Child Drinking Water 7.30 mi SSE 8.20E-02 (1) Critical Age is the highest total dose (all pathways) to an age group.

(2) Critial Pathway is the highest individual dose within the identified Critical Age group.

(3) Maximum dose is a summation of the fish, drinking water and shoreline sediment pathways.

Section 4 - Page 3

Page 2 of 2 GASEOUS RELEASE PATHWAY IODINE, PARTICULATE, and TRITIUM Organ Environmental or Effluent Data Critical Age (1)

Critical Pathway (2)

Location Maximum Dose (3)

(mrem)

Skin Environmental 0.00E+00 Skin Effluent All Ground Plane 0.5 mi NNE 0.00E+00 Bone Environmental 0.00E+00 Bone Effluent Child Vegetation 0.5 mi NNE 5.91E+00 Liver Environmental 0.00E+00 Liver Effluent Child Vegetation 0.5 mi NNE 2.26E+00 T. Body Environmental 0.00E+00 T. Body Effluent Child Vegetation 0.5 mi NNE 2.26E+00 Thyroid Environmental 0.00E+00 Thyroid Effluent Child Vegetation 0.5 mi NNE 2.26E+00 Kidney Environmental 0.00E+00 Kidney Effluent Child Vegetation 0.5 mi NNE 2.26E+00 Lung Environmental 0.00E+00 Lung Effluent Child Vegetation 0.5 mi NNE 2.26E+00 GI-LLI Environmental 0.00E+00 GI-LLI Effluent Child Vegetation 0.5 mi NNE 2.26E+00 (1) Critical Age is the highest total dose (all pathways) to an age group.

(2) Critial Pathway is the highest individual dose within the identified Critical Age group.

(3) Maximum dose is a summation of the ground/plane, inhalation, milk and vegetation pathways.

Section 4 - Page 4

TABLE 4.1-B Maximum Individual Dose for 2016 based on Environmental Measurements (mrem) for Catawba Nuclear Station Age Sample Medium Bone Liver T. Body Thyroid Kidney Lung GI-LLI Skin Infant Airborne 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Drinking Water 0.00E+00 2.87E-02 2.87E-02 2.87E-02 2.87E-02 2.87E-02 2.87E-02 0.00E+00 Milk 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 TOTAL 0.00E+00 2.87E-02 2.87E-02 2.87E-02 2.87E-02 2.87E-02 2.87E-02 0.00E+00 Child Airborne 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Drinking Water 0.00E+00 2.92E-02 2.92E-02 2.92E-02 2.92E-02 2.92E-02 2.92E-02 0.00E+00 Milk 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Broadleaf Vegetation 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fish 0.00E+00 7.64E-03 7.64E-03 7.64E-03 7.64E-03 7.64E-03 7.64E-03 0.00E+00 Shoreline Sediment 0.00E+00 0.00E+00 2.49E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2.93E-04 TOTAL 0.00E+00 3.68E-02 3.71E-02 3.68E-02 3.68E-02 3.68E-02 3.68E-02 2.93E-04 Teen Airborne 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Drinking Water 0.00E+00 1.52E-02 1.52E-02 1.52E-02 1.52E-02 1.52E-02 1.52E-02 0.00E+00 Milk 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Broadleaf Vegetation 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fish 0.00E+00 9.24E-03 9.24E-03 9.24E-03 9.24E-03 9.24E-03 9.24E-03 0.00E+00 Shoreline Sediment 0.00E+00 0.00E+00 1.19E-03 0.00E+00 0.00E+00 0.00E+00 0.00E+00 1.40E-03 TOTAL 0.00E+00 2.44E-02 2.56E-02 2.44E-02 2.44E-02 2.44E-02 2.44E-02 1.40E-03 Adult Airborne 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Drinking Water 0.00E+00 2.16E-02 2.16E-02 2.16E-02 2.16E-02 2.16E-02 2.16E-02 0.00E+00 Milk 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Broadleaf Vegetation 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fish 0.00E+00 1.20E-02 1.20E-02 1.20E-02 1.20E-02 1.20E-02 1.20E-02 0.00E+00 Shoreline Sediment 0.00E+00 0.00E+00 2.14E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2.52E-04 TOTAL 0.00E+00 3.36E-02 3.38E-02 3.36E-02 3.36E-02 3.36E-02 3.36E-02 2.52E-04 Note: Dose tables are provided for sample media displaying positive nuclide occurrence.

Section 4 - Page 5

Catawba Nuclear Station Dose from Drinking Water Pathway for 2016 Data Maximum Exposed Infant Infant Dose from Drinking Water Pathway (mrem) = Usage (l) x Dose Factor (mrem/pCi ingested) x Concentration (pCi/l)

Usage (intake in one year) =

330 l Highest Annual Net Mean Ingestion Dose Factor Concentration Dose (mrem)

Indicator Water Radionuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI Location (pCi/l)

Bone Liver T. Body Thyroid Kidney Lung GI-LLI Mn-54 NO DATA 1.99E-05 4.51E-06 NO DATA 4.41E-06 NO DATA 7.31E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-58 NO DATA 3.60E-06 8.98E-06 NO DATA NO DATA NO DATA 8.97E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fe-59 3.08E-05 5.38E-05 2.12E-05 NO DATA NO DATA 1.59E-05 2.57E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-60 NO DATA 1.08E-05 2.55E-05 NO DATA NO DATA NO DATA 2.57E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zn-65 1.84E-05 6.31E-05 2.91E-05 NO DATA 3.06E-05 NO DATA 5.33E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Nb-95 4.20E-08 1.73E-08 1.00E-08 NO DATA 1.24E-08 NO DATA 1.46E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zr-95 2.06E-07 5.02E-08 3.56E-08 NO DATA 5.41E-08 NO DATA 2.50E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 I-131 3.59E-05 4.23E-05 1.86E-05 1.39E-02 4.94E-05 NO DATA 1.51E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-134 3.77E-04 7.03E-04 7.10E-05 NO DATA 1.81E-04 7.42E-05 1.91E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-137 5.22E-04 6.11E-04 4.33E-05 NO DATA 1.64E-04 6.64E-05 1.91E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 BaLa-140 1.71E-04 1.71E-07 8.81E-06 NO DATA 4.06E-08 1.05E-07 4.20E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 H-3 NO DATA 3.08E-07 3.08E-07 3.08E-07 3.08E-07 3.08E-07 3.08E-07 214 282 0.00E+00 2.87E-02 2.87E-02 2.87E-02 2.87E-02 2.87E-02 2.87E-02 Dose Commitment (mrem) =

0.00E+00 2.87E-02 2.87E-02 2.87E-02 2.87E-02 2.87E-02 2.87E-02 Section 4 - Page 6

Catawba Nuclear Station Dose from Drinking Water Pathway for 2016 Data Maximum Exposed Child Child Dose from Drinking Water Pathway (mrem) = Usage (l) x Dose Factor (mrem/pCi ingested) x Concentration (pCi/l)

Usage (intake in one year) =

510 l Highest Annual Net Mean Ingestion Dose Factor Concentration Dose (mrem)

Indicator Water Radionuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI Location (pCi/l)

Bone Liver T. Body Thyroid Kidney Lung GI-LLI Mn-54 NO DATA 1.07E-05 2.85E-06 NO DATA 3.00E-06 NO DATA 8.98E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-58 NO DATA 1.80E-06 5.51E-06 NO DATA NO DATA NO DATA 1.05E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fe-59 1.65E-05 2.67E-05 1.33E-05 NO DATA NO DATA 7.74E-06 2.78E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C0-60 NO DATA 5.29E-06 1.56E-05 NO DATA NO DATA NO DATA 2.93E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zn-65 1.37E-05 3.65E-05 2.27E-05 NO DATA 2.30E-05 NO DATA 6.41E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Nb-95 2.25E-08 8.76E-09 6.26E-09 NO DATA 8.23E-09 NO DATA 1.62E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zr-95 1.16E-07 2.55E-08 2.27E-08 NO DATA 3.65E-08 NO DATA 2.66E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 I-131 1.72E-05 1.73E-05 9.83E-06 5.72E-03 2.84E-05 NO DATA 1.54E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-134 2.34E-04 3.84E-04 8.10E-05 NO DATA 1.19E-04 4.27E-05 2.07E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-137 3.27E-04 3.13E-04 4.62E-05 NO DATA 1.02E-04 3.67E-05 1.96E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 BaLa-140 8.31E-05 7.28E-08 4.85E-06 NO DATA 2.37E-08 4.34E-08 4.21E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 H-3 NO DATA 2.03E-07 2.03E-07 2.03E-07 2.03E-07 2.03E-07 2.03E-07 214 282 0.00E+00 2.92E-02 2.92E-02 2.92E-02 2.92E-02 2.92E-02 2.92E-02 Dose Commitment (mrem) =

0.00E+00 2.92E-02 2.92E-02 2.92E-02 2.92E-02 2.92E-02 2.92E-02 Section 4 - Page 7

Catawba Nuclear Station Dose from Fish Pathway for 2016 Data Maximum Exposed Child Child Dose from Fish Pathway (mrem) = Usage (kg) x Dose Factor (mrem/pCi ingested) x Concentration (pCi/kg)

H-3 Concentration in Fish = Surface Water pCi/l x Bioaccumulation Factor 0.9 pCi/kg per pCi/l = 6057 pCi/l x 0.9 = 5451 pCi/kg Usage (intake in one year) =

6.9 kg Highest Annual Net Mean Ingestion Dose Factor Concentration Dose (mrem)

Indicator Fish Radionuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI Location (pCi/kg)

Bone Liver T. Body Thyroid Kidney Lung GI-LLI Mn-54 NO DATA 1.07E-05 2.85E-06 NO DATA 3.00E-06 NO DATA 8.98E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-58 NO DATA 1.80E-06 5.51E-06 NO DATA NO DATA NO DATA 1.05E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fe-59 1.65E-05 2.67E-05 1.33E-05 NO DATA NO DATA 7.74E-06 2.78E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 C0-60 NO DATA 5.29E-06 1.56E-05 NO DATA NO DATA NO DATA 2.93E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zn-65 1.37E-05 3.65E-05 2.27E-05 NO DATA 2.30E-05 NO DATA 6.41E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-134 2.34E-04 3.84E-04 8.10E-05 NO DATA 1.19E-04 4.27E-05 2.07E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-137 3.27E-04 3.13E-04 4.62E-05 NO DATA 1.02E-04 3.67E-05 1.96E-06 ALL 0.0 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 H-3 NO DATA 2.03E-07 2.03E-07 2.03E-07 2.03E-07 2.03E-07 2.03E-07 208 5451 0.00E+00 7.64E-03 7.64E-03 7.64E-03 7.64E-03 7.64E-03 7.64E-03 Dose Commitment (mrem) =

0.00E+00 7.64E-03 7.64E-03 7.64E-03 7.64E-03 7.64E-03 7.64E-03 Section 4 - Page 8

Catawba Nuclear Station Dose from Shoreline Sediment Pathway for 2016 Data Maximum Exposed Child Shoreline Recreation =

14 hr (in one year)

Shore Width Factor =

0.2 Sediment Surface Mass =

40 kg/m2 Child Dose from Shoreline Sediment Pathway (mrem) = Shoreline Recreation (hr) x External Dose Factor (mrem/hr per pCi/m2) x Shore Width Factor x Sediment Surface Mass (kg/m2) x Sediment Concentration (pCi/kg)

External Dose Factor Standing Highest Annual Net Dose on Contaminated Ground Mean Concentration (mrem/hr per pCi/m2)

Indicator Sediment (mrem)

Radionuclide T. Body Skin Location (pCi/kg)

T. Body Skin Mn-54 5.80E-09 6.80E-09 ALL 0.00 0.00E+00 0.00E+00 Co-58 7.00E-09 8.20E-09 ALL 0.00 0.00E+00 0.00E+00 Co-60 1.70E-08 2.00E-08 208 131 2.49E-04 2.93E-04 Cs-134 1.20E-08 1.40E-08 ALL 0.00 0.00E+00 0.00E+00 Cs-137 4.20E-09 4.90E-09 ALL 0.00 0.00E+00 0.00E+00 Dose Commitment (mrem) =

2.49E-04 2.93E-04 Section 4 - Page 9

Catawba Nuclear Station Dose from Drinking Water Pathway for 2016 Data Maximum Exposed Teen Teen Dose from Drinking Water Pathway (mrem) = Usage (l) x Dose Factor (mrem/pCi ingested) x Concentration (pCi/l)

Usage (intake in one year) =

510 l Highest Annual Net Mean Ingestion Dose Factor Concentration Dose (mrem)

Indicator Water Radionuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI Location (pCi/l)

Bone Liver T. Body Thyroid Kidney Lung GI-LLI Mn-54 NO DATA 5.90E-06 1.17E-06 NO DATA 1.76E-06 NO DATA 1.21E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-58 NO DATA 9.72E-07 2.24E-06 NO DATA NO DATA NO DATA 1.34E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fe-59 5.87E-06 1.37E-05 5.29E-06 NO DATA NO DATA 4.32E-06 3.24E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-60 NO DATA 2.81E-06 6.33E-06 NO DATA NO DATA NO DATA 3.66E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zn-65 5.76E-06 2.00E-05 9.33E-06 NO DATA 1.28E-05 NO DATA 8.47E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Nb-95 8.22E-09 4.56E-09 2.51E-09 NO DATA 4.42E-09 NO DATA 1.95E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zr-95 4.12E-08 1.30E-08 8.94E-09 NO DATA 1.91E-08 NO DATA 3.00E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 I-131 5.85E-06 8.19E-06 4.40E-06 2.39E-03 1.41E-05 NO DATA 1.62E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-134 8.37E-05 1.97E-04 9.14E-05 NO DATA 6.26E-05 2.39E-05 2.45E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-137 1.12E-04 1.49E-04 5.19E-05 NO DATA 5.07E-05 1.97E-05 2.12E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 BaLa-140 2.84E-05 3.48E-08 1.83E-06 NO DATA 1.18E-08 2.34E-08 4.38E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 H-3 NO DATA 1.06E-07 1.06E-07 1.06E-07 1.06E-07 1.06E-07 1.06E-07 214 282 0.00E+00 1.52E-02 1.52E-02 1.52E-02 1.52E-02 1.52E-02 1.52E-02 Dose Commitment (mrem)=

0.00E+00 1.52E-02 1.52E-02 1.52E-02 1.52E-02 1.52E-02 1.52E-02 Section 4 - Page 10

Catawba Nuclear Station Dose from Fish Pathway for 2016 Data Maximum Exposed Teen Teen Dose from Fish Pathway (mrem) = Usage (kg) x Dose Factor (mrem/pCi ingested) x Concentration (pCi/kg)

H-3 Concentration in Fish = Surface Water pCi/l x Bioaccumulation Factor 0.9 pCi/kg per pCi/l = 6057 pCi/l x 0.9 = 5451 pCi/kg Usage (intake in one year) =

16 kg Highest Annual Ingestion Dose Factor Net Mean Dose (mrem)

Concentration Radionuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI Location (pCi/kg)

Bone Liver T. Body Thyroid Kidney Lung GI-LLI Mn-54 NO DATA 5.90E-06 1.17E-06 NO DATA 1.76E-06 NO DATA 1.21E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-58 NO DATA 9.72E-07 2.24E-06 NO DATA NO DATA NO DATA 1.34E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fe-59 5.87E-06 1.37E-05 5.29E-06 NO DATA NO DATA 4.32E-06 3.24E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-60 NO DATA 2.81E-06 6.33E-06 NO DATA NO DATA NO DATA 3.66E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zn-65 5.76E-06 2.00E-05 9.33E-06 NO DATA 1.28E-05 NO DATA 8.47E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-134 8.37E-05 1.97E-04 9.14E-05 NO DATA 6.26E-05 2.39E-05 2.45E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-137 1.12E-04 1.49E-04 5.19E-05 NO DATA 5.07E-05 1.97E-05 2.12E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 H-3 NO DATA 1.06E-07 1.06E-07 1.06E-07 1.06E-07 1.06E-07 1.06E-07 208 5451 0.00E+00 9.24E-03 9.24E-03 9.24E-03 9.24E-03 9.24E-03 9.24E-03 Dose Commitment (mrem) =

0.00E+00 9.24E-03 9.24E-03 9.24E-03 9.24E-03 9.24E-03 9.24E-03 Section 4 - Page 11

Catawba Nuclear Station Dose from Shoreline Sediment Pathway for 2016 Data Maximum Exposed Teen Shoreline Recreation =

67 hr (in one year)

Shore Width Factor =

0.2 Sediment Surface Mass =

40 kg/m2 Teen Dose from Shoreline Sediment Pathway (mrem) = Shoreline Recreation (hr) x External Dose Factor (mrem/hr per pCi/m2) x Shore Width Factor x Sediment Surface Mass (kg/m2) x Sediment Concentration (pCi/kg)

External Dose Factor Standing Highest Annual Net Dose on Contaminated Ground Mean Concentration (mrem/hr per pCi/m2)

Indicator Sediment (mrem)

Radionuclide T. Body Skin Location (pCi/kg)

T. Body Skin Mn-54 5.80E-09 6.80E-09 ALL 0.00 0.00E+00 0.00E+00 Co-58 7.00E-09 8.20E-09 ALL 0.00 0.00E+00 0.00E+00 Co-60 1.70E-08 2.00E-08 208 131 1.19E-03 1.40E-03 Cs-134 1.20E-08 1.40E-08 ALL 0.00 0.00E+00 0.00E+00 Cs-137 4.20E-09 4.90E-09 ALL 0.00 0.00E+00 0.00E+00 Dose Commitment (mrem) =

1.19E-03 1.40E-03 Section 4 - Page 12

Catawba Nuclear Station Dose from Drinking Water Pathway for 2016 Data Maximum Exposed Adult Adult Dose from Drinking Water Pathway (mrem) = Usage (l) x Dose Factor (mrem/pCi ingested) x Concentration (pCi/l)

Usage (intake in one year) =

730 l Highest Annual Net Mean Ingestion Dose Factor Concentration Dose (mrem)

Indicator Water Radionuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI Location (pCi/l)

Bone Liver T. Body Thyroid Kidney Lung GI-LLI Mn-54 NO DATA 4.57E-06 8.72E-07 NO DATA 1.36E-06 NO DATA 1.40E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-58 NO DATA 7.45E-07 1.67E-06 NO DATA NO DATA NO DATA 1.51E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fe-59 4.34E-06 1.02E-05 3.91E-06 NO DATA NO DATA 2.85E-06 3.40E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-60 NO DATA 2.14E-06 4.72E-06 NO DATA NO DATA NO DATA 4.02E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zn-65 4.84E-06 1.54E-05 6.96E-06 NO DATA 1.03E-05 NO DATA 9.70E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Nb-95 6.22E-09 3.46E-09 1.86E-09 NO DATA 3.42E-09 NO DATA 2.10E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zr-95 3.04E-08 9.75E-09 6.60E-09 NO DATA 1.53E-08 NO DATA 3.09E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 I-131 4.16E-06 5.95E-06 3.41E-06 1.95E-03 1.02E-05 NO DATA 1.57E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-134 6.22E-05 1.48E-04 1.21E-04 NO DATA 4.79E-05 1.59E-05 2.59E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-137 7.97E-05 1.09E-04 7.14E-05 NO DATA 3.70E-05 1.23E-05 2.11E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 BaLa-140 2.03E-05 2.55E-08 1.33E-06 NO DATA 8.67E-09 1.46E-08 4.18E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 H-3 NO DATA 1.05E-07 1.05E-07 1.05E-07 1.05E-07 1.05E-07 1.05E-07 214 282 0.00E+00 2.16E-02 2.16E-02 2.16E-02 2.16E-02 2.16E-02 2.16E-02 Dose Commitment (mrem) =

0.00E+00 2.16E-02 2.16E-02 2.16E-02 2.16E-02 2.16E-02 2.16E-02 Section 4 - Page 13

Catawba Nuclear Station Dose from Fish Pathway for 2016 Data Maximum Exposed Adult Adult Dose from Fish Pathway (mrem) = Usage (kg) x Dose Factor (mrem/pCi ingested) x Concentration (pCi/kg)

H-3 Concentration in Fish = Surface Water pCi/l x Bioaccumulation Factor 0.9 pCi/kg per pCi/l = 6057 pCi/l x 0.9 = 5451 pCi/kg Usage (intake in one year) =

21 kg Highest Annual Net Mean Ingestion Dose Factor Concentration Dose (mrem)

Radionuclide Bone Liver T. Body Thyroid Kidney Lung GI-LLI Location (pCi/kg)

Bone Liver T. Body Thyroid Kidney Lung GI-LLI Mn-54 NO DATA 4.57E-06 8.72E-07 NO DATA 1.36E-06 NO DATA 1.40E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-58 NO DATA 7.45E-07 1.67E-06 NO DATA NO DATA NO DATA 1.51E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Fe-59 4.34E-06 1.02E-05 3.91E-06 NO DATA NO DATA 2.85E-06 3.40E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Co-60 NO DATA 2.14E-06 4.72E-06 NO DATA NO DATA NO DATA 4.02E-05 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Zn-65 4.84E-06 1.54E-05 6.96E-06 NO DATA 1.03E-05 NO DATA 9.70E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-134 6.22E-05 1.48E-04 1.21E-04 NO DATA 4.79E-05 1.59E-05 2.59E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Cs-137 7.97E-05 1.09E-04 7.14E-05 NO DATA 3.70E-05 1.23E-05 2.11E-06 ALL 0.00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 H-3 NO DATA 1.05E-07 1.05E-07 1.05E-07 1.05E-07 1.05E-07 1.05E-07 208 5451 0.00E+00 1.20E-02 1.20E-02 1.20E-02 1.20E-02 1.20E-02 1.20E-02 Dose Commitment (mrem) =

0.00E+00 1.20E-02 1.20E-02 1.20E-02 1.20E-02 1.20E-02 1.20E-02 Section 4 - Page 14

Catawba Nuclear Station Dose from Shoreline Sediment Pathway for 2016 Data Maximum Exposed Adult Shoreline Recreation =

12 hr (in one year)

Shore Width Factor =

0.2 Sediment Surface Mass =

40 kg/m2 Adult Dose from Shoreline Sediment Pathway (mrem) = Shoreline Recreation (hr) x External Dose Factor (mrem/hr per pCi/m2) x Shore Width Factor x Sediment Surface Mass (kg/m2) x Sediment Concentration (pCi/kg)

External Dose Factor Standing Highest Annual Net Dose on Contaminated Ground Mean Concentration (mrem)

(mrem/hr per pCi/m2)

Indicator Sediment Radionuclide T. Body Skin Location (pCi/kg)

T. Body Skin Mn-54 5.80E-09 6.80E-09 ALL 0.00 0.00E+00 0.00E+00 Co-58 7.00E-09 8.20E-09 ALL 0.00 0.00E+00 0.00E+00 Co-60 1.70E-08 2.00E-08 208 131 2.14E-04 2.52E-04 Cs-134 1.20E-08 1.40E-08 ALL 0.00 0.00E+00 0.00E+00 Cs-137 4.20E-09 4.90E-09 ALL 0.00 0.00E+00 0.00E+00 Dose Commitment (mrem) =

2.14E-04 2.52E-04 Section 4 - Page 15

Section 5 - Page 1 5.0 QUALITY ASSURANCE 5.1 SAMPLE COLLECTION EnRad Laboratories and the Environmental Water Resources Group performed the environmental sample collections as specified by approved sample collection procedures.

5.2 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.

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

5.4 LABORATORY EQUIPMENT QUALITY ASSURANCE 5.4.1 DAILY QUALITY CONTROL EnRad Laboratories has an internal quality assurance program which monitors each type of instrumentation for reliability and accuracy. Daily quality control checks ensure that instruments are in proper working order and these checks are used to monitor instrument performance.

5.4.2 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.

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

5.5 DUKE ENERGY INTERLABORATORY COMPARISON PROGRAM In 2016 Duke Energy Environmental Laboratory (EnRad) participated in interlaboratory programs to satisfy Radiological Environmental Monitoring Program requirements in

Section 5 - Page 2 Duke Energy nuclear plant Offsite Dose Calculation Manuals and Selected Licensee Commitments Manuals, as applicable. In addition, EnRad Laboratory participated in the ERA RadCheMTM Proficiency Testing program to satisfy North Carolina state drinking water radiochemistry certification requirements.

EnRad Laboratory participated in three interlaboratory programs: Eckert & Ziegler Analytics (EZA), ERA, and Fleet Scientific Services (FSS). EZA results were evaluated against IP 84750 acceptance criteria stated in EnRad Procedure 515, Cross Check Program Administration. ERA evaluated reported results based on National Environmental Laboratory Accreditation Conference (NELAC) Field of Proficiency Testing criteria. FSS results were evaluated as prescribed in Duke Energy Nuclear Generation Procedure SRPMP 9-2.

5.5.1 DUKE ENERGY INTERLABORATORY PROGRAM EnRad Laboratories participated in the Duke Energy Fleet Scientific Services (FSS) Interlaboratory Program during 2016. Interlaboratory cross check samples including mixed gamma in water (Marinelli beakers), low-level I-131 in water, gross beta in water, and tritium in water samples were analyzed during 2016. A summary of the EnRad Laboratory program results for 2016 is documented in Table 5.0-A.

Interlaboratory cross checks were distributed by Fleet Scientific Services (FSS) staff in accordance with SRPMP 9-2. One media type, water, was analyzed for mixed gamma, tritium, beta, and LLI-131. Table 5.0-A lists results for specific analyses. One-hundred and seventy-four results were reported of which 164 (94.3%) were in agreement.

NCR # 02072622 was written by FSS staff due to five out of nine third quarter alpha nuclide results from the FSS cross check samples Alpha/Beta in Water (Q163ABW1, Q163ABW2 and Q163ABW3) showed non-agreement, three other results showed warning limit evaluations.

In the third quarter of 2016, one data set of the three analyzed for FSS Tritium in Water Sample Q163TWR3 showed a low bias when compared to the known value.

NCR # 02074856 was initiated to investigate why this sample set was lower than expected.

5.5.2 ECKERT & ZIEGLER ANALYTICS CROSS CHECK PROGRAM EnRad Laboratories participated in the Eckert & Ziegler Analytics Cross Check Program during 2016. Cross check samples including air filters (single and composites), air cartridges, gross beta in water, various mixed gamma samples in Marinelli beakers (soil, vegetation, milk, and water), tritium in water, and Iodine in milk and water samples were analyzed at various times of the year. A summary of the EnRad Laboratory program results for 2016 is documented in Table 5.0-B.

Interlaboratory cross check samples from EZA were received and analyzed in all four quarters of 2016. Table 5.0-B lists the performance for specific samples.

Section 5 - Page 3 Seventy-nine results were reported of which 79 (100%) met the acceptance criteria based on IP 84750. Five EZA cross check samples did exhibit either a high or low bias in at least one nuclide of interest and EnRad proactively initiated NCRs to investigative these biases. The first bias was found in the second quarter gross alpha/beta in water sample (E11527), where a high alpha activity bias was evident in the sample set. NCR # 02052857 was written to investigate the high alpha activity bias in the water samples.

In the third quarter of 2016, the Gamma in Composite Filter cross check (E11590) showed a low activity bias for the Cr-51 nuclide, the other eight reported nuclides were all found to be in trend. NCR #02080821 was initiated to track the actions for investigating the Cr-51 activity bias. The Gamma in Water cross check (E11588),

which was also analyzed in the third quarter of 2016 showed a high activity bias for the Fe-59 isotope. The remaining nine isotopes of sample E11588 were all found to be within trend, NCR # 02074444 was written to investigate the high Fe-59 activity bias.

NCR # 02027474 was written to document and track the associated actions of an overall high activity bias in the LLI-131 in Milk cross check samples (E11472) analyzed in the first quarter of 2016. In the second quarter of 2016, LLI-131 in Water cross check samples (E11526) also showed an overall high bias within the sample set. NCR # 02045683 was initiated to investigate this continued LLI-131 bias since the samples are analyzed the same and the simulated milk matrix is similar to that of the water. In the third quarter of 2016, cross check E11592, LLI-131 in Milk was analyzed and no activity bias was evident.

5.5.3 ERA PROFICIENCY TESTING EnRad Laboratories performed method proficiency testing through a program administered by Environmental Resource Associates (ERA) of Arvada, CO. ERA supplied requested method proficiency samples for analysis and nuclide concentration determination. ERA reported proficiency test results to the North Carolina Department of Health and Human Services, North Carolina Public Health Drinking Water Laboratory Certification Program. A summary of these proficiency test data for 2016 is documented in Table 5.0-C.

Proficiency samples were distributed in the second and fourth quarters. Table 5.0-C summarizes the results and evaluation. Fourteen results were reported of which 14 (100%) were in agreement.

Two NCRs were proactively written to investigate nuclide activity biases seen in ERA Proficiency Samples. NCR # 02032824 was written to investigate a high activity bias in the Zn-65 nuclide of Proficiency Sample RAD-105, Gamma Emitters in Water, which was analyzed in the second quarter of 2016. The remaining four identified nuclides in sample RAD-105 were within trend. In the fourth quarter of 2016, NCR # 02081918 was written to document and track the actions of an overall high bias in the sample set for Proficiency Sample RAD-107, I-131 in Water. However, during review of data for AREOR preparations, it was found that the closure for NCR # 02081918 was insufficient to explain the event,

Section 5 - Page 4 so NCR # 02103716 was generated to better document the possible cause of the I-131 bias.

5.6 INTERCOMPARISON PROGRAM Catawba Nuclear Station routinely participates in an environmental sample intercomparison program. Program elements include sampling frequency and analysis parameters for drinking water, surface water, milk, fish, broadleaf vegetation, and shoreline sediment samples that have been collected. Samples are routinely split with a vendor laboratory for intercomparison analysis.

5.7 TLD INTERCOMPARISON PROGRAM 5.7.1 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.

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 2016 Nuclear Technology Services Intercomparison Report is documented in Table 5.0-D.

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 third and fourth quarters of 2016 an environmental external TLD cross check failed and NCR # 02106779 was written to document the failures. To prevent recurrence, the two TLDs were pulled and visually inspected for abnormalities in the elements and overall integrity of the TLDs and no abnormalities were found. The two TLDs were then annealed and irradiated to 100 GU, then read 7 days later. Both TLDs over responded on E3 or E4 and were outside of the 10% acceptance criteria per procedure RD/0/B/4000/13, Environmental Monitoring. TLD # 103523 and 103511 were both removed from Environmental TLD inventory and removed from service.

Complete documentation of any evaluation will be available and provided to the NRC upon request.

Section 5 - Page 5 TABLE 5.0-A DUKE ENERGY INTERLABORATORY COMPARISON PROGRAM 2016 EnRad Fleet Scientific Services Cross Check Performance Summary Interlaboratory cross checks were distributed by Fleet Scientific Services (FSS) staff in accordance with SRPMP 9-2.

One media type, water, was analyzed for mixed gamma, tritium, beta, and LLI-131. Table 5.0-A lists results for specific analyses. One-hundred and seventy-four results were reported of which 164 (94.3%) were in agreement.

Sample Sample ID Nuclide Quarter Units EnRad Value GO Value EnRad/GO Ratio Evaluation Gamma in Water Q161GWR Mn-54 1

pCi/L 7540 6890 1.09 Agreement 1.0 L 1

pCi/L 7500 6890 1.09 Agreement 1

pCi/L 7540 6890 1.09 Agreement Co-57 1

pCi/L 4960 4880 1.02 Agreement 1

pCi/L 5060 4880 1.04 Agreement 1

pCi/L 5070 4880 1.04 Agreement Co-60 1

pCi/L 4400 4370 1.01 Agreement 1

pCi/L 4760 4370 1.09 Agreement 1

pCi/L 4530 4370 1.04 Agreement Zn-65 1

pCi/L 11900 10600 1.12 Agreement 1

pCi/L 12200 10600 1.15 Agreement 1

pCi/L 11800 10600 1.11 Agreement Y-88 1

pCi/L 3170 3310 0.96 Agreement 1

pCi/L 3460 3310 1.04 Agreement 1

pCi/L 3270 3310 0.99 Agreement Sn-113 1

pCi/L 9800 9190 1.07 Agreement 1

pCi/L 9720 9190 1.06 Agreement 1

pCi/L 9700 9190 1.06 Agreement Cs-134 1

pCi/L 6970 7750 0.90 Agreement 1

pCi/L 7020 7750 0.91 Agreement 1

pCi/L 6980 7750 0.90 Agreement Cs-137 1

pCi/L 5240 4930 1.06 Agreement 1

pCi/L 5340 4930 1.08 Agreement 1

pCi/L 5230 4930 1.06 Agreement

Section 5 - Page 6 TABLE 5.0-A (Cont.)

Sample Sample ID Nuclide Quarter Units EnRad Value GO Value EnRad/GO Ratio Evaluation Gamma in Water Q161GWR Mn-54 1

pCi/L 7640 6890 1.11 Agreement 3.5 L 1

pCi/L 7680 6890 1.12 Agreement 1

pCi/L 7690 6890 1.12 Agreement Co-57 1

pCi/L 5110 4880 1.05 Agreement 1

pCi/L 5240 4880 1.07 Agreement 1

pCi/L 5210 4880 1.07 Agreement Co-60 1

pCi/L 4750 4370 1.09 Agreement 1

pCi/L 4710 4370 1.08 Agreement 1

pCi/L 4630 4370 1.06 Agreement Zn-65 1

pCi/L 11900 10600 1.12 Agreement 1

pCi/L 12000 10600 1.13 Agreement 1

pCi/L 11800 10600 1.11 Agreement Y-88 1

pCi/L 3360 3310 1.01 Agreement 1

pCi/L 3490 3310 1.05 Agreement 1

pCi/L 3380 3310 1.02 Agreement Sn-113 1

pCi/L 9970 9190 1.08 Agreement 1

pCi/L 9860 9190 1.07 Agreement Cs-134 1

pCi/L 7410 7750 0.96 Agreement 1

pCi/L 7390 7750 0.95 Agreement 1

pCi/L 7350 7750 0.95 Agreement Cs-137 1

pCi/L 5340 4930 1.08 Agreement 1

pCi/L 5420 4930 1.10 Agreement 1

pCi/L 5250 4930 1.06 Agreement

Section 5 - Page 7 TABLE 5.0-A (Cont.)

Sample Sample ID Nuclide Quarter Units EnRad Value GO Value EnRad/GO Ratio Evaluation Gamma in Water Q163GWR Cr-51 3

pCi/L 30400 26400 1.15 Agreement 0.25 L 3

pCi/L 28800 26400 1.09 Agreement 3

pCi/L 28600 26400 1.08 Agreement Mn-54 3

pCi/L 26700 21800 1.23 Agreement 3

pCi/L 25300 21800 1.16 Agreement 3

pCi/L 24900 21800 1.14 Agreement Co-58 3

pCi/L 23100 20200 1.14 Agreement 3

pCi/L 21700 20200 1.07 Agreement 3

pCi/L 21500 20200 1.06 Agreement Fe-59 3

pCi/L 19100 14900 1.28 Warning1 3

pCi/L 18100 14900 1.21 Agreement 3

pCi/L 18000 14900 1.20 Agreement Co-60 3

pCi/L 38100 31400 1.21 Agreement 3

pCi/L 35600 31400 1.13 Agreement 3

pCi/L 35600 31400 1.13 Agreement Zn-65 3

pCi/L 52500 40000 1.31 Warning1 3

pCi/L 49200 40000 1.23 Agreement 3

pCi/L 49100 40000 1.23 Agreement Cs-134 3

pCi/L 32100 31300 1.03 Agreement 3

pCi/L 30200 31300 0.97 Agreement 3

pCi/L 29700 31300 0.95 Agreement Cs-137 3

pCi/L 25900 22100 1.17 Agreement 3

pCi/L 24500 22100 1.11 Agreement 3

pCi/L 24100 22100 1.09 Agreement Ce-141 3

pCi/L 16900 14700 1.15 Agreement 3

pCi/L 15800 14700 1.08 Agreement 3

pCi/L 16100 14700 1.10 Agreement

1) Warnings were caused by expected double humped coincidence summing and the FSS cross check provider did not request an investigation and does not constitute a non-agreement.

Section 5 - Page 8 TABLE 5.0-A (Cont.)

Sample Sample ID Nuclide Quarter Units EnRad Value GO Value EnRad/GO Ratio Evaluation Gamma in Water Q163GWR Cr-51 3

pCi/L 27200 26400 1.03 Agreement 0.5 L 3

pCi/L 27200 26400 1.03 Agreement 3

pCi/L 26900 26400 1.02 Agreement Mn-54 3

pCi/L 23700 21800 1.09 Agreement 3

pCi/L 23900 21800 1.10 Agreement 3

pCi/L 24000 21800 1.10 Agreement Co-58 3

pCi/L 20400 20200 1.01 Agreement 3

pCi/L 20700 20200 1.02 Agreement 3

pCi/L 20700 20200 1.02 Agreement Fe-59 3

pCi/L 16800 14900 1.12 Agreement 3

pCi/L 17100 14900 1.14 Agreement 3

pCi/L 17200 14900 1.15 Agreement Co-60 3

pCi/L 33500 31400 1.07 Agreement 3

pCi/L 34200 31400 1.09 Agreement 3

pCi/L 34000 31400 1.08 Agreement Zn-65 3

pCi/L 46100 40000 1.15 Agreement 3

pCi/L 47000 40000 1.17 Agreement 3

pCi/L 46900 40000 1.17 Agreement Cs-134 3

pCi/L 30900 31300 0.99 Agreement 3

pCi/L 28800 31300 0.92 Agreement 3

pCi/L 28800 31300 0.92 Agreement Cs-137 3

pCi/L 22900 22100 1.04 Agreement 3

pCi/L 23300 22100 1.05 Agreement 3

pCi/L 23200 22100 1.05 Agreement Ce-141 3

pCi/L 15000 14700 1.02 Agreement 3

pCi/L 15300 14700 1.04 Agreement 3

pCi/L 15300 14700 1.04 Agreement

Section 5 - Page 9 TABLE 5.0-A (Cont.)

Sample Sample ID Nuclide Quarter Units EnRad Value GO Value EnRad/GO Ratio Evaluation Gamma in Water Q163GWR Cr-51 3

pCi/L 27700 26400 1.05 Agreement 3.5 L 3

pCi/L 27600 26400 1.04 Agreement 3

pCi/L 27400 26400 1.04 Agreement Mn-54 3

pCi/L 23600 21800 1.08 Agreement 3

pCi/L 23800 21800 1.09 Agreement 3

pCi/L 23700 21800 1.09 Agreement Co-58 3

pCi/L 20600 20200 1.02 Agreement 3

pCi/L 20800 20200 1.03 Agreement 3

pCi/L 20700 20200 1.02 Agreement Fe-59 3

pCi/L 16500 14900 1.10 Agreement 3

pCi/L 16700 14900 1.12 Agreement 3

pCi/L 16500 14900 1.10 Agreement Co-60 3

pCi/L 34100 31400 1.09 Agreement 3

pCi/L 34000 31400 1.08 Agreement Zn-65 3

pCi/L 45600 40000 1.14 Agreement 3

pCi/L 45900 40000 1.15 Agreement 3

pCi/L 45500 40000 1.14 Agreement Cs-134 3

pCi/L 32700 31300 1.05 Agreement 3

pCi/L 30100 31300 0.96 Agreement 3

pCi/L 29900 31300 0.96 Agreement Cs-137 3

pCi/L 23100 22100 1.05 Agreement 3

pCi/L 23400 22100 1.06 Agreement 3

pCi/L 23200 22100 1.05 Agreement Ce-141 3

pCi/L 15400 14700 1.05 Agreement 3

pCi/L 15700 14700 1.07 Agreement 3

pCi/L 15500 14700 1.06 Agreement

Section 5 - Page 10 TABLE 5.0-A (Cont.)

Sample Sample ID Nuclide Quarter Units EnRad Value GO Value EnRad/GO Ratio Evaluation Tritium in Water Q161TWR1 1

pCi/L 4880 4730 1.03 Agreement H-3 1

pCi/L 4810 4730 1.02 Agreement 1

pCi/L 4770 4730 1.01 Agreement Q161TWR2 1

pCi/L 80200 81200 0.99 Agreement H-3 1

pCi/L 80100 81200 0.99 Agreement 1

pCi/L 79700 81200 0.98 Agreement Q161TWR3 1

pCi/L 488 471 1.04 Agreement H-3 1

pCi/L 478 471 1.02 Agreement 1

pCi/L 479 471 1.02 Agreement Tritium in Water H-3 3

pCi/L 1230 1250 0.98 Agreement Q163TWR1 3

pCi/L 1170 1250 0.93 Agreement 3

pCi/L 1220 1250 0.97 Agreement H-3 3

pCi/L 134000 134000 1.00 Agreement Q163TWR2 3

pCi/L 134000 134000 1.00 Agreement 3

pCi/L 132000 134000 0.99 Agreement H-3 3

pCi/L 380 387 0.98 Agreement2 Q163TWR3 3

pCi/L 388 387 1.00 Agreement2 3

pCi/L 413 387 1.07 Agreement2

2) NCR # 02074856

Section 5 - Page 11 TABLE 5.0-A (Cont.)

Sample Sample ID Nuclide Quarter Units EnRad Value GO Value EnRad/GO Ratio Evaluation LLI-131 in Water Q162LIW4 I-131 2

pCi/L 84.7 79.6 1.06 Agreement 2

pCi/L 85.6 79.6 1.07 Agreement 2

pCi/L 84.4 79.6 1.06 Agreement Q162LIW5 I-131 2

pCi/L 2030 1850 1.10 Agreement 2

pCi/L 1950 1850 1.05 Agreement 2

pCi/L 2000 1850 1.08 Agreement Q162LIW6 I-131 2

pCi/L 403 380 1.06 Agreement 2

pCi/L 396 380 1.04 Agreement 2

pCi/L 391 380 1.03 Agreement Alpha Beta in Water Q163ABW1 Am-241 3

pCi/L 603 470 1.28 Warning3 3

pCi/L 591 470 1.26 Warning3 3

pCi/L 588 470 1.25 Agreement Cs-137 3

pCi/L 293 289 1.01 Agreement 3

pCi/L 288 289 1.00 Agreement Q163ABW2 Am-241 3

pCi/L 381 271 1.41 Non-Agreement3 3

pCi/L 380 271 1.40 Non-Agreement3 3

pCi/L 377 271 1.39 Non-Agreement3 Cs-137 3

pCi/L 262 258 1.02 Agreement 3

pCi/L 260 258 1.01 Agreement 3

pCi/L 270 258 1.05 Agreement Am-241 3

pCi/L 321 238 1.35 Non-Agreement3 3

pCi/L 326 238 1.37 Non-Agreement3 Q163ABW3 3

pCi/L 308 238 1.29 Warning3 Cs-137 3

pCi/L 489 493 0.99 Agreement 3

pCi/L 486 493 0.99 Agreement 3

pCi/L 483 493 0.98 Agreement

3) NCR # 02072622

Section 5 - Page 12 TABLE 5.0-B ECKERT & ZIEGLER ANALYTICS CROSS CHECK PROGRAM 2016 Cross Check Results for EnRad Laboratories Interlaboratory cross check samples from EZA were received and analyzed in all four quarters of 2016. 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 5.0-B lists the performance for specific samples.

Seventy-nine results were reported of which 79 (100%) met the acceptance criteria based on IP 84750.

Sample Sample ID Nuclide Quarter Units EnRad Value EZA Value EnRad/EZA Ratio Evaluation Beta Filter in Planchet E11474A Cs-137 1

pCi 139 134 1.05 Agreement E11591 Cs-137 3

pCi 55.5 56.7 0.98 Agreement E11665A Cs-137 4

pCi 225 228 0.99 Agreement Gamma in E11529 Ce-141 2

pCi/g 0.19 0.21 0.92 Agreement Soil Cr-51 2

pCi/g 0.41 0.42 0.98 Agreement Cs-134 2

pCi/g 0.26 0.27 0.97 Agreement Cs-137 2

pCi/g 0.25 0.26 0.94 Agreement Co-58 2

pCi/g 0.20 0.22 0.91 Agreement Mn-54 2

pCi/g 0.20 0.19 1.02 Agreement Fe-59 2

pCi/g 0.19 0.19 1.04 Agreement Zn-65 2

pCi/g 0.37 0.36 1.04 Agreement Co-60 2

pCi/g 0.25 0.26 0.96 Agreement LLI-131 in Water E11526 I-131 2

pCi/L 109 99.8 1.09 Agreement1 Gross Alpha/Beta in Water E11527 Am-241 2

pCi/L 83.6 74.9 1.12 Agreement2 Cs-137 2

pCi/L 251 250 1.00 Agreement2 Gamma in Vegetation (Coffee Grounds)

E11528 Ce-141 2

pCi/g 0.23 0.23 1.01 Agreement Cr-51 2

pCi/g 0.44 0.45 0.98 Agreement Cs-134 2

pCi/g 0.27 0.29 0.94 Agreement Cs-137 2

pCi/g 0.20 0.20 1.00 Agreement Co-58 2

pCi/g 0.22 0.23 0.96 Agreement Mn-54 2

pCi/g 0.21 0.21 1.00 Agreement Fe-59 2

pCi/g 0.20 0.20 1.00 Agreement Zn-65 2

pCi/g 0.45 0.39 1.17 Agreement Co-60 2

pCi/g 0.28 0.28 0.98 Agreement

1) NCR # 02045683

2) NCR # 02052857

Section 5 - Page 13 TABLE 5.0-B (Cont.)

Sample Sample ID Nuclide Quarter Units EnRad Value EZA Value EnRad/EZA Ratio Evaluation Gamma in Composite Filter E11471 Ce-141 1

pCi 80.1 75.6 1.06 Agreement Cr-51 1

pCi 213 187 1.14 Agreement Cs-134 1

pCi 102 99.9 1.02 Agreement Cs-137 1

pCi 119 124 0.96 Agreement Co-58 1

pCi 86.9 90.2 0.96 Agreement Mn-54 1

pCi 92.9 89.6 1.04 Agreement Fe-59 1

pCi 110 101 1.09 Agreement Zn-65 1

pCi 139 137 1.01 Agreement Co-60 1

pCi 195 187 1.04 Agreement Gamma in Composite Filter E11590 Ce-141 3

pCi 76.0 70.3 1.08 Agreement Cr-51 3

pCi 183 178 1.03 Agreement3 Cs-134 3

pCi 102 102 1.00 Agreement Cs-137 3

pCi 88.3 89.4 0.99 Agreement Co-58 3

pCi 72.1 73.4 0.98 Agreement Mn-54 3

pCi 115 115 1.00 Agreement Fe-59 3

pCi 63.5 68.4 0.93 Agreement Zn-65 3

pCi 143 135 1.06 Agreement Co-60 3

pCi 104 102 1.02 Agreement Gamma in Water E11588 I-131 3

pCi/L 50.3 49.0 1.03 Agreement Ce-141 3

pCi/L 89.5 85.2 1.05 Agreement Cr-51 3

pCi/L 230 215 1.07 Agreement Cs-134 3

pCi/L 112 124 0.90 Agreement Cs-137 3

pCi/L 112 108 1.03 Agreement Co-58 3

pCi/L 88.9 89.0 1.00 Agreement Mn-54 3

pCi/L 149 139 1.07 Agreement Fe-59 3

pCi/L 97.4 82.8 1.18 Agreement4 Zn-65 3

pCi/L 180 163 1.10 Agreement Co-60 3

pCi/L 131 123 1.06 Agreement

3) NCR # 02080821

4) NCR # 02074444

Section 5 - Page 14 TABLE 5.0-B (Cont.)

Sample Sample ID Nuclide Quarter Units EnRad Value EZA Value EnRad/EZA Ratio Evaluation Gamma in Filter (Falcon)

E11589 Ce-141 3

pCi 84.6 72.9 1.16 Agreement Cr-51 3

pCi 209 184 1.13 Agreement Cs-134 3

pCi 123 106 1.16 Agreement Cs-137 3

pCi 99.8 92.7 1.08 Agreement Co-58 3

pCi 75.8 76.1 1.00 Agreement Mn-54 3

pCi 123 119 1.03 Agreement Fe-59 3

pCi 79.7 70.9 1.12 Agreement Zn-65 3

pCi 171 140 1.22 Agreement Co-60 3

pCi 116 105 1.10 Agreement Gamma in E11475 I-131 1

pCi/L 86.5 82.2 1.05 Agreement Milk Ce-141 1

pCi/L 101 98.4 1.03 Agreement Cr-51 1

pCi/L 243 243 1.00 Agreement Cs-134 1

pCi/L 121 130 0.93 Agreement Cs-137 1

pCi/L 175 161 1.09 Agreement Co-58 1

pCi/L 117 117 1.00 Agreement Mn-54 1

pCi/L 127 117 1.09 Agreement Fe-59 1

pCi/L 143 131 1.09 Agreement Zn-65 1

pCi/L 186 179 1.04 Agreement Co-60 1

pCi/L 266 244 1.09 Agreement Gross Alpha/Beta in Water E11668 Am-241 4

pCi/L 135 146 0.92 Agreement Cs-137 4

pCi/L 270 293 0.92 Agreement LLI-131 in Milk E11472 I-131 1

pCi/L 102 92 1.11 Agreement5 E11592 I-131 3

pCi/L 82.6 81.5 1.01 Agreement Tritium in Water E11530 H-3 2

pCi/L 12200 12000 1.01 Agreement E11666 H-3 4

pCi/L 11900 11900 1.00 Agreement I-131 in Charcoal Cartridge E11473 I-131 1

pCi 90 89 1.01 Agreement E11587 I-131 3

pCi 61.9 58.6 1.06 Agreement

5) NCR # 02027474

Section 5 - Page 15 TABLE 5.0-C ENVIRONMENTAL RESOURCE ASSOCIATES (ERA)

PROFICIENCY TESTING 2016 Proficiency Test Results for EnRad Laboratories North Carolina Department of Health and Human Services Laboratory Certification EnRad Laboratories Proficiency test samples are received, prepared, and analyzed in second and fourth quarters of 2016. Results are reported directly to Environmental Resource Associates as described in the instruction package within the study period. Proficiency test data are reported to ERA for evaluation. The acceptance criteria for the program was based on the National Environmental Laboratory Accreditation Conference (NELAC) Field of Proficiency Testing criteria. Fourteen results were reported of which 14 (100 %) met the acceptance criteria. ERA reports proficiency test results to the North Carolina Department of Health and Human Services, North Carolina Public Drinking Water Laboratory Certification Program. This testing is to satisfy the North Carolina state drinking water radiochemistry certification requirements.

Sample Sample ID Nuclide Quarter Units EnRad Value ERA Value Acceptance Limits Evaluation Gamma Emitters in Water RAD-105 Ba-133 2

pCi/L 56.6 58.8 48.7-64.9 Agreement Cs-134 2

pCi/L 42.8 43.3 34.6-47.6 Agreement Cs-137 2

pCi/L 86.3 78.4 70.6-88.9 Agreement Co-60 2

pCi/L 101 102 91.8-114 Agreement Zn-65 2

pCi/L 244 214 193-251 Agreement1 RAD-107 Ba-133 4

pCi/L 54 54.9 45.4-60.7 Agreement Cs-134 4

pCi/L 77.4 81.8 67.0-90.0 Agreement Cs-137 4

pCi/L 210 210 189-233 Agreement Co-60 4

pCi/L 68.9 64.5 58.0-73.4 Agreement Zn-65 4

pCi/L 280 245 220-287 Agreement Tritium in Water RAD-105 H-3 2

pCi/L 7940 7840 6790-8620 Agreement RAD-107 H-3 4

pCi/L 9670 9820 8540-10800 Agreement Iodine-131 in Water RAD-105 I-131 2

pCi/L 28.1 26.6 22.1-31.3 Agreement RAD-107 I-131 4

pCi/L 30.7 26.3 21.9-31.0 Agreement2

1) NCR # 02032824

2) NCR # 02081918

Section 5 - Page 16 TABLE 5.0-D 2016 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 2016 2nd Quarter 2016 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 102234 90.33 88.74 1.79

<+/-15%

Pass 103685 16.86 15.90 6.04

<+/-15%

Pass 102082 87.38 88.74

-1.53

<+/-15%

Pass 103686 17.24 15.90 8.43

<+/-15%

Pass 103299 90.78 88.74 2.30

<+/-15%

Pass 103704 15.76 15.90

-0.88

<+/-15%

Pass 103287 95.55 88.74 7.67

<+/-15%

Pass 103705 16.21 15.90 1.95

<+/-15%

Pass 103752 92.49 88.74 4.23

<+/-15%

Pass 103714 17.45 15.90 9.75

<+/-15%

Pass Average Bias (B) 2.89 Average Bias (B) 5.06 Standard Deviation (S) 3.38 Standard Deviation (S) 4.45 Measure Performance lBl+S 6.27

<15%

Pass Measure Performance lBl+S 9.51

<15%

Pass 3rd Quarter 2016 4th Quarter 2016 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 102058 73.65 69.8 5.58

<+/-15%

Pass 100527 81.50 75.3 8.23

<+/-15%

Pass 103540 76.65 69.8 9.88

<+/-15%

Pass 100345 80.56 75.3 6.99

<+/-15%

Pass 103523 82.05 69.8 17.62

<+/-15%

Fail1 101386 82.55 75.3 9.63

<+/-15%

Pass 100795 74.03 69.8 6.12

<+/-15%

Pass 100123 81.17 75.3 7.80

<+/-15%

Pass 100355 71.79 69.8 2.91

<+/-15%

Pass 103511 87.26 75.3 15.88

<+/-15%

Fail1 Average Bias (B) 8.42 Average Bias (B) 9.71 Standard Deviation (S) 5.71 Standard Deviation (S) 3.58 Measure Performance lBl+S 14.13

<15%

Pass Measure Performance lBl+S 13.29

<15%

Pass

1) NCR # 02106779 generated for 3rd and 4th Quarter 2016 failures

Appendix A - Page 1 APPENDIX A ENVIRONMENTAL SAMPLING ANALYSIS PROCEDURES

Appendix A - Page 2 APPENDIX A ENVIRONMENTAL SAMPLING AND ANALYSIS PROCEDURES Adherence to established procedures for sampling and analysis of all environmental media at Catawba Nuclear Station was required to ensure compliance with Station Selected Licensee Commitments. Analytical procedures were employed to ensure that Selected Licensee Commitments detection capabilities were achieved.

Environmental sampling and analyses were performed by EnRad Laboratories, Dosimetry and Records, Fisheries and Aquatic Ecology.

This appendix describes the environmental sampling frequencies and analysis procedures by media type.

I. CHANGE OF SAMPLING PROCEDURES Telemetric REMP air location equipment monitoring was implemented during 2016 and dual air sampler placement discontinued (NCR # 01993671).

REMP air filter orientation was changed during 2016 by inward facing the scrim side (shiny side or fuzzy side) and outward facing the crosshatch side (dull side or paper side) as indicated by manufacturer recommendation (NCR # 02026783, 02088361).

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 and broadleaf vegetation are ground to achieve a homogeneous mixture. Soils and sediments are dried, sifted to remove foreign objects (rocks, clams, glass, etc.) then transferred to appropriate counting geometry.

Low-level iodine analyses are performed by passing a designated sample aliquot through a pre-measured amount of ion exchange resin to remove and concentrate any iodine in the aqueous sample (milk). The resin is then dried, mixed thoroughly, and a net resin weight determined before being transferred to appropriate counting geometry and analyzed by gamma spectroscopy.

Tritium analyses are performed quarterly by using low-level environmental liquid scintillation analysis technique on a Perkin-Elmer 2900TR liquid scintillation system or Perkin-Elmer 3100TR liquid scintillation system. Tritium samples are distilled and

Appendix A - Page 3 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 by concentrating a designated aliquot of sample precipitate and analyzing by Tennelec XLB Series 5 gas-flow proportional counters.

Samples are batch processed with a blank to ensure sample contamination has not occurred.

III. CHANGE OF ANALYSIS PROCEDURES REMP air filter orientation was changed during 2016 by inward facing the scrim side (shiny side or fuzzy side) and outward facing the crosshatch side (dull side or paper side) as indicated by manufacturer recommendation (NCR # 02026783, 02088361).

Calibration standards using the new configuration were implemented during 2016.

IV. SAMPLING AND ANALYSIS PROCEDURES A.1 AIRBORNE PARTICULATE AND RADIOIODINE Airborne particulate and radioiodine samples at each of six 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 sampler. 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 was performed on each charcoal cartridge. A weekly gross beta analysis was performed on each filter. A quarterly gamma analysis was performed on the quarterly filter composite (by location). The continuous composite samples were collected from the locations listed below.

Location 200 = Site Boundary (0.63 mi. NNE)

Location 201 = Site Boundary (0.53 mi. NE)

Location 208 = Discharge Canal (0.45 mi. S)

Location 212 = Tega Cay (3.32 mi. E)

Location 258 = Fairhope Road (9.84 mi. W)(Control)

Location 261 = Site Boundary (0.72 mi. N)

A.2 DRINKING WATER Monthly composite drinking water samples were collected at each of two locations. A gross beta and gamma analysis was performed on monthly composites. Tritium analysis was performed on the quarterly composites. The composites were collected monthly from the locations listed below.

Appendix A - Page 4 Location 214 = Rock Hill Water Supply (7.30 mi. SSE)

Location 218 = Belmont Water Supply (13.5 mi. NNE)(Control)

A.3 SURFACE WATER Monthly composite samples were collected at each of three locations. A gamma analysis was performed on the monthly composites. Tritium analysis was performed on the quarterly composites. The composites were collected monthly from the locations listed below.

Location 208 = Discharge Canal (0.45 mi. S)

Location 211 = Wylie Dam (4.06 mi. ESE)

Location 215 = River Pointe - Hwy 49 (4.21 mi. NNE)(Control)

A.4 MILK Biweekly grab samples were collected at one location. A gamma and low-level Iodine-131 analysis was performed on each sample. The biweekly grab samples were collected from the location listed below.

Location 221 = Dairy (14.5 mi. NW)(Control)

A.5 BROADLEAF VEGETATION Monthly samples were collected at each of five locations. A gamma analysis was performed on each sample. The samples were collected from the locations listed below.

Location 200 = Site Boundary (0.63 mi. NNE)

Location 201 = Site Boundary (0.53 mi. NE)

Location 222 = Site Boundary (0.70 mi. N)

Location 226 = Site Boundary (0.48 mi. S)

Location 258 = Fairhope Road (9.84 mi. W)(Control)

A.6 FOOD PRODUCTS Monthly samples were collected when available during the harvest season at one location. A gamma analysis was performed on each sample. The samples were collected from the location listed below.

Location 260 = Irrigated Gardens (2.00 mi. SSE)

A.7 FISH Semiannual samples were collected at each of two locations. A gamma analysis was performed on the edible portions of each sample. Boney fish (i.e. Sunfish)

Appendix A - Page 5 were prepared whole minus the head and tail portions. The samples were collected from the locations listed below.

Location 208 = Discharge Canal (0.45 mi. S)

Location 216 = Hwy 49 Bridge (4.19 mi. NNE)(Control)

A.8 SHORELINE SEDIMENT Semiannual samples were collected at each of three locations. A gamma analysis was performed on each sample following the drying and removal of rocks and clams. The samples were collected from the locations listed below.

Location 208 = Discharge Canal (0.45 mi. S)

Location 210 = Ebenezer Access (2.31 mi. SE)

Location 215 = River Pointe - Hwy 49 (4.21 mi. NNE)(Control)

A.9 DIRECT GAMMA RADIATION (TLD)

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

An inner ring of 16 TLDs, one in each meteorological sector in the general area of the site boundary.

An outer ring of 16 TLDs, one in each meteorological sector in the 6 to 8 kilometer range.

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

A.10 ANNUAL LAND USE CENSUS An Annual Land Use Census was conducted to identify within a distance of 8 kilometers (5.0 miles) from the station, 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 The Nearest Milk-giving Animal (cow, goat, etc.)

Appendix A - Page 6 The census was conducted during the growing season on 7/13, 7/14, and 7/20/2016. Results are shown in Table 3.11. No changes were made to the sampling procedures during 2016 as a result of the 2016 census.

V.

GLOBAL POSITIONING SYSTEM (GPS) ANALYSIS The Catawba site centerline used for GPS measurements was referenced from the Catawba Nuclear Station Updated Final Safety Analysis Report (UFSAR), section 2.1.1.1, Specification of Location. Waypoint coordinates used for CNS GPS measurements were latitude 35°-3'-5"N and longitude 81°-4'-10"W. Maps and tables were generated using North American Datum (NAD) 27. Data normally reflect accuracy to within 2 to 5 meters from point of measurement. All GPS field measurements were taken as close as possible to the item of interest. Distances for the locations are displayed using three significant figures.

Appendix B - Page 1 APPENDIX B RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

OF RESULTS

Appendix B - Page 2 CATAWBA NUCLEAR STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM DATA

SUMMARY

Catawba Nuclear Station Docket Numbers 50-413, 414 York County, South Carolina Calendar Year 2016 Medium or Pathway Sampled or Measured (Unit of Measurement)

Type and Total No. of Measurements Performed Lower Limit of Detection (LLD)(1)

All Indicator Locations(2) (3)

Mean Range Location w/Highest Annual Mean Control Locations Mean Range(2) (3)

Name, Distance, and Direction Mean Range(2) (3)

No. of Non-Routine Report Meas.

Air Particulate (pCi/m3)

Gross Beta 312 See Table 2.2-C 2.14E-2 (260/260) 7.53E 4.62E-2 208 (0.45 mi S) 2.24E-2 (52/52) 1.04E 4.60E-2 258 (9.84 mi W) 2.07E-2 (52/52) 9.11E 4.56E-2 0

Gamma 24 See Table 2.2-C All less than LLD All less than LLD 0

Air Radioiodine (pCi/m3)

Gamma 312 See Table 2.2-C All less than LLD All less than LLD 0

Drinking Water (pCi/l)

Gross Beta 26 4

1.80 (13/13) 0.71 - 2.70 214 (7.30 mi SSE) 1.80 (13/13) 0.71 - 2.70 218 (13.5 mi NNE) 1.75 (11/13) 0.96 - 2.95 0

Gamma 26 See Table 2.2-C All less than LLD All less than LLD 0

Tritium 8

2000 688 (4/4) 392 - 1150 214 (7.30 mi SSE) 688 (4/4) 392 - 1150 218 (13.5 mi NNE) 406 (4/4) 258 - 463 0

Surface Water (pCi/l)

Gamma 39 See Table 2.2-C All less than LLD All less than LLD 0

Tritium 12 2000 3484 (8/8) 238 - 8270 208 (0.45 mi S) 6338 (4/4) 4370 - 8270 215 (4.21 mi NNE) 281 (4/4) 227 - 387 0

Milk (pCi/l)

Gamma 26 See Table 2.2-C No Indicator Location All less than LLD 0

I-131 26 See Table 2.2-C No Indicator Location All less than LLD 0

Appendix B - Page 3 CATAWBA NUCLEAR STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM DATA

SUMMARY

Catawba Nuclear Station Docket Numbers 50-413, 414 York County, South Carolina Calendar Year 2016 Medium or Pathway Sampled or Measured (Unit of Measurement)

Type and Total No. of Measurements Performed Lower Limit of Detection (LLD)(1)

All Indicator Locations(2) (3)

Mean Range Location w/Highest Annual Mean Control Locations Mean Range(2) (3)

Name, Distance, and Direction Mean Range(2) (3)

No. of Non-Routine Report Meas.

Broadleaf Vegetation (pCi/kg, wet)

Gamma 60 See Table 2.2-C All less than LLD All less than LLD 0

Food Products (pCi/kg, wet)

Gamma 9 (4)

See Table 2.2-C All less than LLD No Control Location 0

Fish (pCi/kg, wet)

Gamma 12 See Table 2.2-C All less than LLD All less than LLD 0

Sediments--Shoreline (pCi/kg, dry)

Gamma 6

Co-60 See Table 2.2-C 131 (2/4) 59.2 - 203 208 (0.45 mi S) 131 (2/2) 59.2 - 203 All less than LLD 0

TLD (mR per quarter) (5)

TLD Readout 162 (4) 18.0 (152/152) 11.1 - 27.2 232 (4.18 mi NE) 23.6 (4/4) 21.7 - 27.2 217 (10.3 mi SSE) 247 (7.33 mi ESE) 251 (9.72 mi WNW) 14.1 (10/10) 11.2 - 18.4 0

Appendix B - Page 4 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.

TLD exposure is reported in milliroentgen (mR) per standard quarter (91 days). TLD data indicated in section 3.10 (Direct Gamma Radiation) are reported in mrem /yr (n

0.95).

Appendix C - Page 1 APPENDIX C SAMPLING DEVIATIONS UNAVAILABLE ANALYSES

Appendix C - Page 2 APPENDIX C CATAWBA NUCLEAR STATION SAMPLING DEVIATIONS & UNAVAILABLE ANALYSES DEVIATION & UNAVAILABLE REASON CODES BF Blown Fuse PM Preventive Maintenance CN Construction PO Power Outage FZ Sample Frozen PS Pump out of service / Undergoing repair IV Insufficient Volume SL Sample Loss/Lost due to Lab Accident IW Inclement Weather SM Motor / Rotor Seized LC Line Clog to Sampler SU Seasonally Unavailable OT Other TF Torn Filter PI Power Interrupt VN Vandalism C.1 SAMPLING DEVIATIONS Air Particulate and Air Radioiodine 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. However, 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 Catawba REMP air samplers operated for a total of 99.9%

availability in 2016.

Location Scheduled Collection Dates Code Description &

Action to Prevent Recurrence Corrective Action 208 1/26 - 2/2/2016 PI 1.28 hours3.240741e-4 days 0.00778 hours 4.62963e-5 weeks 1.0654e-5 months downtime, tree removal from power line.

NCR # 01997774 200 2/23 - 3/1/2016 PI 0.48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months downtime due to severe thunderstorm.

NCR # 02006802 261 2/23 - 3/1/2016 PI 0.47 hours5.439815e-4 days 0.0131 hours 7.771164e-5 weeks 1.78835e-5 months downtime due to severe thunderstorm.

NCR # 02006804 201 6/28 - 7/6/2016 PI 1.43 hours4.976852e-4 days 0.0119 hours 7.109788e-5 weeks 1.63615e-5 months downtime due to power interruption.

NCR # 02043705 201 7/26 - 8/2/2016 PI 0.16 hours1.851852e-4 days 0.00444 hours 2.645503e-5 weeks 6.088e-6 months downtime due to severe thunderstorm.

NCR # 02050516 212 10/11 - 10/18/2016 PI 7.86 hours9.953704e-4 days 0.0239 hours 1.421958e-4 weeks 3.2723e-5 months downtime due to electrical work.

NCR # 02071210 212 12/6 - 12/13/2016 PI 0.62 hours7.175926e-4 days 0.0172 hours 1.025132e-4 weeks 2.3591e-5 months downtime due to electrical work.

NCR # 02086131 Drinking Water and Surface Water REMP monthly drinking water samples (Drinking Water (DW)) that experience any downtime during a surveillance period are reported as a deviation and classified as a Sampling Deviation. However, 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 water samplers operated for a total of 98.4% availability in 2016.

Appendix C - Page 3 Drinking Water Location Scheduled Collection Dates Code Description &

Action to Prevent Recurrence Corrective Action 214 3/29 - 4/26/2016 PO 15.6 days downtime due to power outage to sampling equipment. Power outage was attributed to defective AC power outlet which caused sampling equipment malfunction. Alternative AC outlet was located and normal sampling resumed. The defective AC outlet was replaced to prevent recurrence.

NCR # 02023964 214 4/26 - 5/24/2016 IV Insufficient volume available for sampling due to pinched intake tubing. A grab sample was taken, sampler tubing replaced, equipment was verified operational and normal sampling resumed.

NCR # 02032764 218 10/11 - 11/18/2016 OT Sampling equipment was found operating beyond the required calibration due date. Sampling equipment was calibrated, normal sampling was resumed. Procedures and laboratory calibration update processes were enhanced to prevent recurrence.

NCR # 02077015 Surface Water Location Scheduled Collection Dates Code Description &

Action to Prevent Recurrence Corrective Action 211 3/29 - 4/26/2016 OT Fourteen days of downtime were incurred due to samplers water supply being turned off despite valve signage. Follow up with Wylie Dam management was performed to prevent recurrence and increase awareness that sampling equipment water supply is not to be interrupted.

NCR # 02023829 C.2 UNAVAILABLE ANALYSES Food Products / Crops Location Scheduled Collection Dates Code Description &

Action to Prevent Recurrence Corrective Action 260 1/6/2016 SU Sample seasonally unavailable at time of collection.

NCR # 01988903 260 2/2/2016 SU Sample seasonally unavailable at time of collection.

NCR # 01997122 260 3/1/2016 SU Sample seasonally unavailable at time of collection.

NCR # 02006338 TLD Location Scheduled Collection Dates Code Description &

Action to Prevent Recurrence Corrective Action 217 3/17 - 6/6/2016 CN TLD missing due to construction.

NCR # 02038698 217 9/15 - 12/15/2016 CN TLD missing due to construction.

NCR # 02087109

Appendix D - Page 1 APPENDIX D ANALYTICAL DEVIATIONS No Analytical deviations were incurred for the 2016 Radiological Environmental Monitoring Program

Appendix E - Page 1 APPENDIX E RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM RESULTS 2016 This appendix includes sample analysis report summaries and supportive data generated from each sample medium for 2016.

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 398666 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016 1.46E-02 2.25E-03 2.41E-03 Beta Sample ID: 398919 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016 7.53E-03 2.30E-03 3.12E-03 Beta Sample ID: 399237 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016 2.05E-02 2.66E-03 2.49E-03 Beta Sample ID: 399983 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016 1.52E-02 2.57E-03 2.90E-03 Beta Sample ID: 400336 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016 2.01E-02 2.63E-03 2.52E-03 Beta Sample ID: 400966 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016 1.47E-02 2.61E-03 3.04E-03 Beta Sample ID: 401332 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016 1.76E-02 2.49E-03 2.37E-03 Beta Sample ID: 401782 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016 1.23E-02 2.28E-03 2.57E-03 Beta Sample ID: 402293 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016 1.57E-02 2.48E-03 2.62E-03 Beta Sample ID: 403021 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016 1.43E-02 2.38E-03 2.54E-03 Beta Sample ID: 404502 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016 1.52E-02 2.50E-03 2.75E-03 Beta Sample ID: 405385 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016 1.87E-02 2.70E-03 2.85E-03 Beta Sample ID: 406002 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016 1.73E-02 2.68E-03 2.91E-03 Beta Sample ID: 406347 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 3/29/2016

<6.27E-04 0.00E+00 6.27E-04 Cs-134

<3.83E-04 0.00E+00 3.83E-04 Cs-137 1.32E-01 2.28E-02 1.55E-02 Be-7 9.34E-03 5.25E-03 1.95E-03 K-40 Sample ID: 406341 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016 1.52E-02 2.44E-03 2.57E-03 Beta Sample ID: 407533 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016 1.28E-02 2.42E-03 2.87E-03 Beta Sample ID: 408110 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016 1.76E-02 2.64E-03 2.81E-03 Beta Sample ID: 409423 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016 2.22E-02 2.86E-03 2.78E-03 Beta Sample ID: 409758 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016 1.98E-02 2.76E-03 2.83E-03 Beta Sample ID: 410913 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016 1.74E-02 2.54E-03 2.52E-03 Beta Sample ID: 411410 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016 1.63E-02 2.59E-03 2.81E-03 Beta Sample ID: 411734 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016 1.46E-02 2.39E-03 2.53E-03 Beta Sample ID: 412197 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016 2.11E-02 2.59E-03 2.54E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 2 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 412716 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016 1.58E-02 2.75E-03 2.97E-03 Beta Sample ID: 413316 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016 2.60E-02 3.06E-03 2.88E-03 Beta Sample ID: 413863 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016 2.06E-02 2.77E-03 2.76E-03 Beta Sample ID: 415004 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016 2.19E-02 2.85E-03 2.77E-03 Beta Sample ID: 415384 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 6/28/2016

<7.82E-04 0.00E+00 7.82E-04 Cs-134

<4.96E-04 0.00E+00 4.96E-04 Cs-137 1.86E-01 2.73E-02 1.20E-02 Be-7 1.53E-02 7.47E-03 7.13E-03 K-40 Sample ID: 415378 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016 2.56E-02 2.69E-03 2.17E-03 Beta Sample ID: 416368 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016 1.59E-02 2.82E-03 3.15E-03 Beta Sample ID: 416992 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016 1.67E-02 2.56E-03 2.67E-03 Beta Sample ID: 417386 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016 2.74E-02 3.03E-03 2.62E-03 Beta Sample ID: 417780 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016 1.83E-02 2.67E-03 2.76E-03 Beta Sample ID: 418241 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016 2.00E-02 2.62E-03 2.38E-03 Beta Sample ID: 418970 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016 9.47E-03 2.33E-03 3.07E-03 Beta Sample ID: 419471 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016 1.30E-02 2.35E-03 2.63E-03 Beta Sample ID: 420001 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016 2.55E-02 2.97E-03 2.65E-03 Beta Sample ID: 420552 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016 2.07E-02 2.45E-03 2.25E-03 Beta Sample ID: 421389 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016 3.92E-02 3.93E-03 3.42E-03 Beta Sample ID: 422547 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016 2.29E-02 3.03E-03 3.19E-03 Beta Sample ID: 423292 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016 2.25E-02 2.89E-03 2.82E-03 Beta Sample ID: 424415 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 9/27/2016

<7.31E-04 0.00E+00 7.31E-04 Cs-134

<6.17E-04 0.00E+00 6.17E-04 Cs-137 1.50E-01 2.31E-02 7.52E-03 Be-7 7.83E-03 5.25E-03 5.51E-03 K-40 Sample ID: 424409 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016 2.77E-02 3.12E-03 2.89E-03 Beta Sample ID: 425401 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016 1.84E-02 2.62E-03 2.59E-03 Beta Sample ID: 425964 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016 2.78E-02 3.07E-03 2.68E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 3 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 426339 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016 2.22E-02 2.83E-03 2.67E-03 Beta Sample ID: 427028 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016 3.28E-02 3.34E-03 2.89E-03 Beta Sample ID: 427687 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016 3.42E-02 3.33E-03 2.68E-03 Beta Sample ID: 428182 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016 2.25E-02 3.50E-03 3.76E-03 Beta Sample ID: 428867 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016 4.62E-02 4.21E-03 3.48E-03 Beta Sample ID: 429374 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016 1.96E-02 2.60E-03 2.56E-03 Beta Sample ID: 429925 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016 2.05E-02 2.78E-03 2.80E-03 Beta Sample ID: 430546 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016 2.41E-02 2.95E-03 2.81E-03 Beta Sample ID: 431037 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016 3.16E-02 3.65E-03 3.39E-03 Beta Sample ID: 431441 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016 2.36E-02 2.96E-03 2.88E-03 Beta Sample ID: 431785 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 12/28/2016

<4.54E-04 0.00E+00 4.54E-04 Cs-134

<5.06E-04 0.00E+00 5.06E-04 Cs-137 1.53E-01 2.37E-02 1.23E-02 Be-7

<1.25E-02 0.00E+00 1.25E-02 K-40 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 398667 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016 1.99E-02 2.50E-03 2.42E-03 Beta Sample ID: 398920 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016 1.03E-02 2.46E-03 3.10E-03 Beta Sample ID: 399238 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016 2.04E-02 2.67E-03 2.51E-03 Beta Sample ID: 399984 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016 1.88E-02 2.74E-03 2.88E-03 Beta Sample ID: 400337 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016 1.81E-02 2.59E-03 2.62E-03 Beta Sample ID: 400967 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016 1.75E-02 2.67E-03 2.91E-03 Beta Sample ID: 401333 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016 1.88E-02 2.55E-03 2.37E-03 Beta Sample ID: 401783 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016 1.39E-02 2.37E-03 2.57E-03 Beta Sample ID: 402294 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016 1.57E-02 2.49E-03 2.62E-03 Beta Sample ID: 403022 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016 1.61E-02 2.47E-03 2.53E-03 Beta Sample ID: 404503 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016 1.40E-02 2.44E-03 2.75E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 4 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 405386 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016 2.04E-02 2.79E-03 2.87E-03 Beta Sample ID: 406003 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016 1.55E-02 2.58E-03 2.90E-03 Beta Sample ID: 406348 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 3/29/2016

<3.67E-04 0.00E+00 3.67E-04 Cs-134

<3.67E-04 0.00E+00 3.67E-04 Cs-137 1.33E-01 2.17E-02 8.64E-03 Be-7

<1.03E-02 0.00E+00 1.03E-02 K-40 Sample ID: 406342 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016 1.83E-02 2.60E-03 2.57E-03 Beta Sample ID: 407534 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016 1.59E-02 2.58E-03 2.87E-03 Beta Sample ID: 408111 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016 2.18E-02 2.84E-03 2.81E-03 Beta Sample ID: 409424 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016 2.46E-02 2.98E-03 2.79E-03 Beta Sample ID: 409759 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016 2.11E-02 2.82E-03 2.83E-03 Beta Sample ID: 410914 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016 1.76E-02 2.55E-03 2.52E-03 Beta Sample ID: 411411 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016 2.10E-02 2.81E-03 2.80E-03 Beta Sample ID: 411735 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016 1.32E-02 2.32E-03 2.54E-03 Beta Sample ID: 412198 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016 2.19E-02 2.63E-03 2.54E-03 Beta Sample ID: 412717 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016 1.47E-02 2.67E-03 2.95E-03 Beta Sample ID: 413317 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016 2.86E-02 3.16E-03 2.88E-03 Beta Sample ID: 413864 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016 2.14E-02 2.81E-03 2.76E-03 Beta Sample ID: 415005 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016 2.71E-02 3.07E-03 2.78E-03 Beta Sample ID: 415385 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 6/28/2016

<5.07E-04 0.00E+00 5.07E-04 Cs-134

<4.48E-04 0.00E+00 4.48E-04 Cs-137 2.20E-01 2.96E-02 8.75E-03 Be-7

<1.25E-02 0.00E+00 1.25E-02 K-40 Sample ID: 415379 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016 2.27E-02 2.57E-03 2.18E-03 Beta Sample ID: 416369 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016 2.01E-02 3.03E-03 3.15E-03 Beta Sample ID: 416993 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016 1.59E-02 2.52E-03 2.66E-03 Beta Sample ID: 417387 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016 2.62E-02 2.98E-03 2.62E-03 Beta Sample ID: 417781 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016 2.01E-02 2.76E-03 2.77E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 5 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 418242 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016 2.21E-02 2.72E-03 2.38E-03 Beta Sample ID: 418971 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016 7.79E-03 2.24E-03 3.07E-03 Beta Sample ID: 419472 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016 1.43E-02 2.43E-03 2.63E-03 Beta Sample ID: 420002 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016 2.72E-02 3.05E-03 2.65E-03 Beta Sample ID: 420553 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016 2.25E-02 2.60E-03 2.36E-03 Beta Sample ID: 421390 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016 3.51E-02 3.77E-03 3.43E-03 Beta Sample ID: 422548 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016 1.49E-02 2.37E-03 2.71E-03 Beta Sample ID: 423293 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016 1.90E-02 2.72E-03 2.82E-03 Beta Sample ID: 424416 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 9/27/2016

<4.63E-04 0.00E+00 4.63E-04 Cs-134

<4.25E-04 0.00E+00 4.25E-04 Cs-137 1.49E-01 2.31E-02 6.66E-03 Be-7 8.23E-03 6.12E-03 8.11E-03 K-40 Sample ID: 424410 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016 2.54E-02 3.03E-03 2.89E-03 Beta Sample ID: 425402 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016 1.56E-02 2.48E-03 2.60E-03 Beta Sample ID: 425965 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016 2.72E-02 3.04E-03 2.68E-03 Beta Sample ID: 426340 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016 1.87E-02 2.67E-03 2.67E-03 Beta Sample ID: 427029 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016 3.17E-02 3.29E-03 2.89E-03 Beta Sample ID: 427688 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016 3.11E-02 3.21E-03 2.69E-03 Beta Sample ID: 428183 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016 2.10E-02 3.42E-03 3.75E-03 Beta Sample ID: 428868 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016 4.39E-02 4.06E-03 3.39E-03 Beta Sample ID: 429375 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016 2.58E-02 2.79E-03 2.44E-03 Beta Sample ID: 429926 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016 1.70E-02 2.63E-03 2.82E-03 Beta Sample ID: 430547 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016 2.36E-02 2.92E-03 2.79E-03 Beta Sample ID: 431038 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016 2.97E-02 3.57E-03 3.39E-03 Beta Sample ID: 431442 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016 3.22E-02 3.32E-03 2.88E-03 Beta Sample ID: 431786 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 12/28/2016

<6.14E-04 0.00E+00 6.14E-04 Cs-134

<6.39E-04 0.00E+00 6.39E-04 Cs-137 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 6 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 431786 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 12/28/2016 1.34E-01 2.26E-02 1.35E-02 Be-7 1.28E-02 6.15E-03 1.93E-03 K-40 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 398668 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016 1.94E-02 2.48E-03 2.42E-03 Beta Sample ID: 398921 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016 1.04E-02 2.47E-03 3.11E-03 Beta Sample ID: 399239 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016 3.00E-02 3.09E-03 2.50E-03 Beta Sample ID: 399985 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016 1.72E-02 2.66E-03 2.89E-03 Beta Sample ID: 400338 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016 1.88E-02 2.62E-03 2.62E-03 Beta Sample ID: 400968 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016 1.85E-02 2.72E-03 2.92E-03 Beta Sample ID: 401334 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016 1.75E-02 2.49E-03 2.37E-03 Beta Sample ID: 401784 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016 1.41E-02 2.38E-03 2.57E-03 Beta Sample ID: 402295 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016 1.30E-02 2.34E-03 2.62E-03 Beta Sample ID: 403023 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016 1.45E-02 2.39E-03 2.53E-03 Beta Sample ID: 404504 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016 1.59E-02 2.54E-03 2.75E-03 Beta Sample ID: 405387 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016 1.94E-02 2.74E-03 2.87E-03 Beta Sample ID: 406004 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016 1.81E-02 2.71E-03 2.90E-03 Beta Sample ID: 406349 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 3/29/2016

<5.66E-04 0.00E+00 5.66E-04 Cs-134

<5.00E-04 0.00E+00 5.00E-04 Cs-137 1.38E-01 2.37E-02 1.41E-02 Be-7

<1.32E-02 0.00E+00 1.32E-02 K-40 Sample ID: 406343 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016 1.85E-02 2.61E-03 2.56E-03 Beta Sample ID: 407535 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016 1.44E-02 2.50E-03 2.87E-03 Beta Sample ID: 408112 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016 1.94E-02 2.73E-03 2.81E-03 Beta Sample ID: 409425 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016 2.62E-02 3.04E-03 2.79E-03 Beta Sample ID: 409760 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016 2.09E-02 2.81E-03 2.83E-03 Beta Sample ID: 410915 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016 1.61E-02 2.47E-03 2.52E-03 Beta Sample ID: 411412 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016 2.15E-02 2.83E-03 2.80E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 7 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 411736 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016 1.49E-02 2.41E-03 2.54E-03 Beta Sample ID: 412199 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016 2.14E-02 2.61E-03 2.54E-03 Beta Sample ID: 412718 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016 1.66E-02 2.79E-03 2.95E-03 Beta Sample ID: 413318 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016 2.34E-02 2.94E-03 2.88E-03 Beta Sample ID: 413865 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016 2.32E-02 2.89E-03 2.76E-03 Beta Sample ID: 415006 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016 2.62E-02 3.04E-03 2.78E-03 Beta Sample ID: 415386 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 6/28/2016

<6.83E-04 0.00E+00 6.83E-04 Cs-134

<4.96E-04 0.00E+00 4.96E-04 Cs-137 1.88E-01 2.75E-02 1.13E-02 Be-7 1.06E-02 6.13E-03 6.03E-03 K-40 Sample ID: 415380 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016 2.73E-02 2.75E-03 2.16E-03 Beta Sample ID: 416370 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016 1.75E-02 2.90E-03 3.15E-03 Beta Sample ID: 416994 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016 1.87E-02 2.66E-03 2.66E-03 Beta Sample ID: 417388 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016 2.78E-02 3.05E-03 2.62E-03 Beta Sample ID: 417782 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016 1.75E-02 2.63E-03 2.76E-03 Beta Sample ID: 418243 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016 2.03E-02 2.63E-03 2.38E-03 Beta Sample ID: 418972 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016 1.06E-02 2.40E-03 3.07E-03 Beta Sample ID: 419473 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016 1.45E-02 2.44E-03 2.63E-03 Beta Sample ID: 420003 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016 2.86E-02 3.10E-03 2.65E-03 Beta Sample ID: 420554 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016 2.51E-02 2.72E-03 2.36E-03 Beta Sample ID: 421391 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016 3.99E-02 3.96E-03 3.43E-03 Beta Sample ID: 422549 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016 2.26E-02 3.02E-03 3.19E-03 Beta Sample ID: 423294 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016 2.62E-02 3.05E-03 2.82E-03 Beta Sample ID: 424417 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 9/27/2016

<4.62E-04 0.00E+00 4.62E-04 Cs-134

<4.74E-04 0.00E+00 4.74E-04 Cs-137 1.50E-01 2.43E-02 1.47E-02 Be-7

<9.00E-03 0.00E+00 9.00E-03 K-40 Sample ID: 424411 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016 2.66E-02 3.07E-03 2.89E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 8 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 425403 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016 1.81E-02 2.61E-03 2.60E-03 Beta Sample ID: 425966 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016 2.93E-02 3.13E-03 2.68E-03 Beta Sample ID: 426341 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016 2.44E-02 2.93E-03 2.67E-03 Beta Sample ID: 427030 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016 3.43E-02 3.39E-03 2.89E-03 Beta Sample ID: 427689 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016 3.31E-02 3.29E-03 2.69E-03 Beta Sample ID: 428184 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016 2.78E-02 3.60E-03 3.52E-03 Beta Sample ID: 428869 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016 4.60E-02 4.14E-03 3.39E-03 Beta Sample ID: 429376 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016 3.02E-02 2.96E-03 2.44E-03 Beta Sample ID: 429927 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016 2.24E-02 2.88E-03 2.82E-03 Beta Sample ID: 430548 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016 2.23E-02 2.86E-03 2.79E-03 Beta Sample ID: 431039 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016 3.13E-02 3.64E-03 3.39E-03 Beta Sample ID: 431443 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016 3.34E-02 3.36E-03 2.88E-03 Beta Sample ID: 431787 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 12/28/2016

<5.69E-04 0.00E+00 5.69E-04 Cs-134

<5.60E-04 0.00E+00 5.60E-04 Cs-137 1.59E-01 2.37E-02 8.62E-03 Be-7

<1.22E-02 0.00E+00 1.22E-02 K-40 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 398669 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016 1.76E-02 2.38E-03 2.40E-03 Beta Sample ID: 398922 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016 8.47E-03 2.38E-03 3.15E-03 Beta Sample ID: 399240 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016 1.98E-02 2.63E-03 2.49E-03 Beta Sample ID: 399986 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016 1.85E-02 2.74E-03 2.91E-03 Beta Sample ID: 400339 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016 2.35E-02 2.83E-03 2.60E-03 Beta Sample ID: 400969 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016 1.67E-02 2.65E-03 2.94E-03 Beta Sample ID: 401335 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016 1.73E-02 2.48E-03 2.37E-03 Beta Sample ID: 401785 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016 1.60E-02 2.48E-03 2.57E-03 Beta Sample ID: 402296 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016 1.83E-02 2.60E-03 2.60E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 9 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 403024 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016 1.45E-02 2.40E-03 2.55E-03 Beta Sample ID: 404505 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016 1.61E-02 2.54E-03 2.73E-03 Beta Sample ID: 405388 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016 1.87E-02 2.70E-03 2.86E-03 Beta Sample ID: 406005 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016 1.65E-02 2.63E-03 2.91E-03 Beta Sample ID: 406350 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 3/29/2016

<5.17E-04 0.00E+00 5.17E-04 Cs-134

<4.98E-04 0.00E+00 4.98E-04 Cs-137 1.47E-01 2.26E-02 1.12E-02 Be-7 1.01E-02 5.32E-03 1.83E-03 K-40 Sample ID: 406344 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016 1.86E-02 2.62E-03 2.58E-03 Beta Sample ID: 407536 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016 1.63E-02 2.60E-03 2.87E-03 Beta Sample ID: 408113 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016 2.40E-02 2.94E-03 2.81E-03 Beta Sample ID: 409426 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016 2.25E-02 2.82E-03 2.69E-03 Beta Sample ID: 409761 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016 1.93E-02 2.75E-03 2.85E-03 Beta Sample ID: 410916 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016 1.76E-02 2.55E-03 2.52E-03 Beta Sample ID: 411413 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016 2.23E-02 2.88E-03 2.81E-03 Beta Sample ID: 411737 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016 1.53E-02 2.42E-03 2.52E-03 Beta Sample ID: 412200 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016 2.18E-02 2.64E-03 2.54E-03 Beta Sample ID: 412719 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016 1.69E-02 2.81E-03 2.98E-03 Beta Sample ID: 413319 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016 2.61E-02 3.06E-03 2.88E-03 Beta Sample ID: 413866 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016 2.29E-02 2.87E-03 2.75E-03 Beta Sample ID: 415007 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016 2.53E-02 3.00E-03 2.78E-03 Beta Sample ID: 415387 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 6/28/2016

<4.45E-04 0.00E+00 4.45E-04 Cs-134

<4.97E-04 0.00E+00 4.97E-04 Cs-137 2.10E-01 2.90E-02 1.48E-02 Be-7

<1.27E-02 0.00E+00 1.27E-02 K-40 Sample ID: 415381 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016 2.11E-02 2.49E-03 2.16E-03 Beta Sample ID: 416371 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016 1.58E-02 2.81E-03 3.15E-03 Beta Sample ID: 416995 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016 1.67E-02 2.55E-03 2.65E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 10 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 417389 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016 2.77E-02 3.05E-03 2.63E-03 Beta Sample ID: 417783 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016 1.70E-02 2.60E-03 2.76E-03 Beta Sample ID: 418244 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016 1.76E-02 2.50E-03 2.38E-03 Beta Sample ID: 418973 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016 9.06E-03 2.30E-03 3.05E-03 Beta Sample ID: 419474 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016 1.57E-02 2.50E-03 2.64E-03 Beta Sample ID: 420004 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016 2.38E-02 2.90E-03 2.65E-03 Beta Sample ID: 420555 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016 2.06E-02 2.52E-03 2.36E-03 Beta Sample ID: 421392 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016 3.36E-02 3.71E-03 3.41E-03 Beta Sample ID: 422550 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016 1.99E-02 2.91E-03 3.20E-03 Beta Sample ID: 423295 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016 2.17E-02 2.85E-03 2.82E-03 Beta Sample ID: 424418 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 9/27/2016

<6.25E-04 0.00E+00 6.25E-04 Cs-134

<3.83E-04 0.00E+00 3.83E-04 Cs-137 1.37E-01 2.26E-02 1.28E-02 Be-7

<1.58E-02 0.00E+00 1.58E-02 K-40 Sample ID: 424412 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016 2.37E-02 2.95E-03 2.89E-03 Beta Sample ID: 425404 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016 1.38E-02 2.37E-03 2.58E-03 Beta Sample ID: 425967 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016 2.64E-02 3.11E-03 2.83E-03 Beta Sample ID: 426342 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016 1.99E-02 2.72E-03 2.67E-03 Beta Sample ID: 427031 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016 3.20E-02 3.30E-03 2.88E-03 Beta Sample ID: 427690 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016 3.03E-02 3.17E-03 2.68E-03 Beta Sample ID: 428185 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016 1.73E-02 2.91E-03 3.23E-03 Beta Sample ID: 428870 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016 4.48E-02 4.10E-03 3.39E-03 Beta Sample ID: 429377 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016 2.78E-02 2.87E-03 2.44E-03 Beta Sample ID: 429928 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016 1.88E-02 2.69E-03 2.79E-03 Beta Sample ID: 430549 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016 2.16E-02 2.86E-03 2.83E-03 Beta Sample ID: 431040 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016 3.10E-02 3.63E-03 3.39E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 11 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 431444 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016 2.81E-02 3.15E-03 2.88E-03 Beta Sample ID: 431788 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 12/28/2016

<5.11E-04 0.00E+00 5.11E-04 Cs-134

<4.90E-04 0.00E+00 4.90E-04 Cs-137 1.34E-01 2.16E-02 1.01E-02 Be-7

<1.29E-02 0.00E+00 1.29E-02 K-40 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 398670 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016 1.81E-02 2.43E-03 2.43E-03 Beta Sample ID: 398923 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016 1.13E-02 2.52E-03 3.09E-03 Beta Sample ID: 399241 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016 2.07E-02 2.69E-03 2.52E-03 Beta Sample ID: 399987 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016 1.56E-02 2.57E-03 2.86E-03 Beta Sample ID: 400340 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016 1.66E-02 2.52E-03 2.63E-03 Beta Sample ID: 400970 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016 1.56E-02 2.57E-03 2.90E-03 Beta Sample ID: 401336 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016 1.89E-02 2.56E-03 2.37E-03 Beta Sample ID: 401786 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016 1.43E-02 2.39E-03 2.56E-03 Beta Sample ID: 402297 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016 1.57E-02 2.49E-03 2.63E-03 Beta Sample ID: 403025 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016 1.18E-02 2.24E-03 2.52E-03 Beta Sample ID: 404506 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016 1.66E-02 2.57E-03 2.75E-03 Beta Sample ID: 405389 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016 2.01E-02 2.77E-03 2.87E-03 Beta Sample ID: 406006 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016 1.34E-02 2.47E-03 2.90E-03 Beta Sample ID: 406351 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 3/29/2016

<6.32E-04 0.00E+00 6.32E-04 Cs-134

<4.48E-04 0.00E+00 4.48E-04 Cs-137 1.24E-01 2.20E-02 1.32E-02 Be-7 8.76E-03 5.12E-03 1.98E-03 K-40 Sample ID: 406345 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016 1.82E-02 2.59E-03 2.57E-03 Beta Sample ID: 407537 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016 1.41E-02 2.48E-03 2.86E-03 Beta Sample ID: 408114 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016 1.89E-02 2.70E-03 2.81E-03 Beta Sample ID: 409427 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016 2.11E-02 2.79E-03 2.76E-03 Beta Sample ID: 409762 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016 2.00E-02 2.80E-03 2.87E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 12 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 410917 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016 1.66E-02 2.50E-03 2.51E-03 Beta Sample ID: 411414 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016 1.87E-02 2.70E-03 2.80E-03 Beta Sample ID: 411738 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016 1.48E-02 2.41E-03 2.54E-03 Beta Sample ID: 412201 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016 2.40E-02 2.73E-03 2.54E-03 Beta Sample ID: 412720 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016 1.72E-02 2.81E-03 2.94E-03 Beta Sample ID: 413320 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016 2.52E-02 3.02E-03 2.88E-03 Beta Sample ID: 413867 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016 2.27E-02 2.87E-03 2.77E-03 Beta Sample ID: 415008 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016 2.55E-02 3.00E-03 2.78E-03 Beta Sample ID: 415388 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 6/28/2016

<6.62E-04 0.00E+00 6.62E-04 Cs-134

<3.99E-04 0.00E+00 3.99E-04 Cs-137 1.99E-01 2.72E-02 1.03E-02 Be-7

<1.34E-02 0.00E+00 1.34E-02 K-40 Sample ID: 415382 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016 2.29E-02 2.57E-03 2.16E-03 Beta Sample ID: 416372 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016 1.79E-02 2.92E-03 3.14E-03 Beta Sample ID: 416996 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016 1.78E-02 2.61E-03 2.67E-03 Beta Sample ID: 417390 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016 2.64E-02 2.98E-03 2.61E-03 Beta Sample ID: 417784 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016 1.74E-02 2.63E-03 2.78E-03 Beta Sample ID: 418245 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016 1.97E-02 2.60E-03 2.37E-03 Beta Sample ID: 418974 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016 9.11E-03 2.32E-03 3.08E-03 Beta Sample ID: 419475 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016 1.17E-02 2.28E-03 2.63E-03 Beta Sample ID: 420005 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016 2.44E-02 2.93E-03 2.66E-03 Beta Sample ID: 420556 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016 1.98E-02 2.49E-03 2.37E-03 Beta Sample ID: 421393 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016 3.20E-02 3.64E-03 3.42E-03 Beta Sample ID: 422551 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016 2.25E-02 3.02E-03 3.19E-03 Beta Sample ID: 423296 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016 2.29E-02 2.90E-03 2.81E-03 Beta Sample ID: 424419 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 9/27/2016

<5.16E-04 0.00E+00 5.16E-04 Cs-134

<2.80E-04 0.00E+00 2.80E-04 Cs-137 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 13 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 424419 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 9/27/2016 1.42E-01 2.17E-02 9.57E-03 Be-7 1.16E-02 7.50E-03 9.88E-03 K-40 Sample ID: 424413 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016 2.65E-02 3.08E-03 2.90E-03 Beta Sample ID: 425405 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016 1.76E-02 2.58E-03 2.59E-03 Beta Sample ID: 425968 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016 2.70E-02 3.03E-03 2.68E-03 Beta Sample ID: 426343 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016 2.05E-02 2.75E-03 2.68E-03 Beta Sample ID: 427032 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016 2.30E-02 2.93E-03 2.89E-03 Beta Sample ID: 427691 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016 3.21E-02 3.25E-03 2.68E-03 Beta Sample ID: 428186 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016 2.56E-02 3.08E-03 2.89E-03 Beta Sample ID: 428871 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016 4.56E-02 4.13E-03 3.39E-03 Beta Sample ID: 429378 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016 2.91E-02 2.92E-03 2.44E-03 Beta Sample ID: 429929 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016 2.05E-02 2.80E-03 2.83E-03 Beta Sample ID: 430550 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016 1.75E-02 2.63E-03 2.78E-03 Beta Sample ID: 431041 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016 3.10E-02 3.63E-03 3.39E-03 Beta Sample ID: 431445 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016 3.23E-02 3.32E-03 2.88E-03 Beta Sample ID: 431789 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 12/28/2016

<6.23E-04 0.00E+00 6.23E-04 Cs-134

<3.80E-04 0.00E+00 3.80E-04 Cs-137 1.45E-01 2.35E-02 1.08E-02 Be-7 9.78E-03 5.91E-03 6.07E-03 K-40 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 398671 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016 1.76E-02 2.39E-03 2.41E-03 Beta Sample ID: 398924 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016 8.74E-03 2.37E-03 3.12E-03 Beta Sample ID: 399242 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016 2.62E-02 2.93E-03 2.49E-03 Beta Sample ID: 399988 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016 1.63E-02 2.62E-03 2.90E-03 Beta Sample ID: 400341 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016 2.10E-02 2.72E-03 2.61E-03 Beta Sample ID: 400971 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016 1.74E-02 2.68E-03 2.92E-03 Beta Sample ID: 401337 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016 1.66E-02 2.44E-03 2.37E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 14 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 401787 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016 1.44E-02 2.39E-03 2.57E-03 Beta Sample ID: 402298 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016 1.59E-02 2.49E-03 2.62E-03 Beta Sample ID: 403026 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016 1.18E-02 2.24E-03 2.54E-03 Beta Sample ID: 404507 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016 1.78E-02 2.63E-03 2.75E-03 Beta Sample ID: 405390 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016 2.13E-02 2.82E-03 2.85E-03 Beta Sample ID: 406007 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016 1.66E-02 2.64E-03 2.91E-03 Beta Sample ID: 406352 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 3/29/2016

<5.37E-04 0.00E+00 5.37E-04 Cs-134

<4.25E-04 0.00E+00 4.25E-04 Cs-137 1.36E-01 2.22E-02 9.68E-03 Be-7

<1.09E-02 0.00E+00 1.09E-02 K-40 Sample ID: 406346 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016 1.75E-02 2.56E-03 2.57E-03 Beta Sample ID: 407538 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016 1.34E-02 2.45E-03 2.87E-03 Beta Sample ID: 408115 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016 1.92E-02 2.72E-03 2.81E-03 Beta Sample ID: 409428 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016 2.44E-02 2.96E-03 2.78E-03 Beta Sample ID: 409763 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016 1.97E-02 2.78E-03 2.87E-03 Beta Sample ID: 410918 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016 1.76E-02 2.54E-03 2.52E-03 Beta Sample ID: 411415 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016 1.85E-02 2.69E-03 2.81E-03 Beta Sample ID: 411739 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016 1.36E-02 2.34E-03 2.53E-03 Beta Sample ID: 412202 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016 2.37E-02 2.71E-03 2.54E-03 Beta Sample ID: 412721 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016 1.78E-02 2.86E-03 2.97E-03 Beta Sample ID: 413321 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016 2.45E-02 2.99E-03 2.88E-03 Beta Sample ID: 413868 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016 2.42E-02 2.94E-03 2.76E-03 Beta Sample ID: 415009 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016 2.40E-02 2.94E-03 2.77E-03 Beta Sample ID: 415389 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 6/28/2016

<6.18E-04 0.00E+00 6.18E-04 Cs-134

<4.02E-04 0.00E+00 4.02E-04 Cs-137 1.79E-01 2.61E-02 1.32E-02 Be-7

<1.11E-02 0.00E+00 1.11E-02 K-40 Sample ID: 415383 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016 2.39E-02 2.62E-03 2.17E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 15 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 416373 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016 1.74E-02 2.89E-03 3.15E-03 Beta Sample ID: 416997 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016 1.81E-02 2.62E-03 2.66E-03 Beta Sample ID: 417391 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016 2.75E-02 3.04E-03 2.62E-03 Beta Sample ID: 417785 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016 2.05E-02 2.77E-03 2.76E-03 Beta Sample ID: 418246 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016 2.28E-02 2.76E-03 2.38E-03 Beta Sample ID: 418975 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016 9.84E-03 2.35E-03 3.07E-03 Beta Sample ID: 419476 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016 1.47E-02 2.45E-03 2.63E-03 Beta Sample ID: 420006 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016 2.80E-02 3.08E-03 2.65E-03 Beta Sample ID: 420557 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016 2.27E-02 2.61E-03 2.36E-03 Beta Sample ID: 421394 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016 3.60E-02 3.80E-03 3.42E-03 Beta Sample ID: 422552 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016 2.00E-02 2.91E-03 3.19E-03 Beta Sample ID: 423297 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016 2.03E-02 2.79E-03 2.82E-03 Beta Sample ID: 424420 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 9/27/2016

<9.07E-04 0.00E+00 9.07E-04 Cs-134

<4.44E-04 0.00E+00 4.44E-04 Cs-137 1.53E-01 2.39E-02 1.11E-02 Be-7

<1.45E-02 0.00E+00 1.45E-02 K-40 Sample ID: 424414 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016 2.66E-02 3.07E-03 2.89E-03 Beta Sample ID: 425406 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016 1.94E-02 2.67E-03 2.59E-03 Beta Sample ID: 425969 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016 2.62E-02 3.00E-03 2.68E-03 Beta Sample ID: 426344 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016 2.03E-02 2.74E-03 2.67E-03 Beta Sample ID: 427033 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016 2.99E-02 3.22E-03 2.89E-03 Beta Sample ID: 427692 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016 3.30E-02 3.28E-03 2.68E-03 Beta Sample ID: 428187 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016 2.56E-02 3.66E-03 3.76E-03 Beta Sample ID: 428872 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016 4.55E-02 4.12E-03 3.39E-03 Beta Sample ID: 429379 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016 2.71E-02 2.84E-03 2.44E-03 Beta Sample ID: 429930 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016 2.17E-02 2.83E-03 2.80E-03 Beta Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 16 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR PARTICULATE Concentration (Activity): pCi/m3 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 430551 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016 2.61E-02 3.04E-03 2.81E-03 Beta Sample ID: 431042 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016 3.20E-02 3.66E-03 3.39E-03 Beta Sample ID: 431446 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016 3.35E-02 3.37E-03 2.88E-03 Beta Sample ID: 431790 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 12/28/2016

<7.52E-04 0.00E+00 7.52E-04 Cs-134

<4.24E-04 0.00E+00 4.24E-04 Cs-137 1.55E-01 2.44E-02 9.75E-03 Be-7

<1.30E-02 0.00E+00 1.30E-02 K-40 Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 398678 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016

<1.22E-02 0.00E+00 1.22E-02 I-131

<9.28E-03 0.00E+00 9.28E-03 Cs-134

<1.03E-02 0.00E+00 1.03E-02 Cs-137

<9.41E-02 0.00E+00 9.41E-02 Be-7 5.09E-01 1.82E-01 4.18E-02 K-40 Sample ID: 398925 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016

<8.35E-03 0.00E+00 8.35E-03 I-131

<9.14E-03 0.00E+00 9.14E-03 Cs-134

<6.65E-03 0.00E+00 6.65E-03 Cs-137

<7.23E-02 0.00E+00 7.23E-02 Be-7 3.58E-01 1.37E-01 3.34E-02 K-40 Sample ID: 399243 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016

<8.28E-03 0.00E+00 8.28E-03 I-131

<6.84E-03 0.00E+00 6.84E-03 Cs-134

<9.05E-03 0.00E+00 9.05E-03 Cs-137

<5.44E-02 0.00E+00 5.44E-02 Be-7 3.82E-01 1.42E-01 1.18E-01 K-40 Sample ID: 399989 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016

<6.89E-03 0.00E+00 6.89E-03 I-131

<6.47E-03 0.00E+00 6.47E-03 Cs-134

<5.70E-03 0.00E+00 5.70E-03 Cs-137

<6.21E-02 0.00E+00 6.21E-02 Be-7

<2.65E-01 0.00E+00 2.65E-01 K-40 Sample ID: 400342 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016

<1.74E-02 0.00E+00 1.74E-02 I-131

<9.15E-03 0.00E+00 9.15E-03 Cs-134

<1.48E-02 0.00E+00 1.48E-02 Cs-137

<9.64E-02 0.00E+00 9.64E-02 Be-7

<4.72E-01 0.00E+00 4.72E-01 K-40 Sample ID: 400972 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016

<8.46E-03 0.00E+00 8.46E-03 I-131

<7.50E-03 0.00E+00 7.50E-03 Cs-134

<7.45E-03 0.00E+00 7.45E-03 Cs-137

<5.21E-02 0.00E+00 5.21E-02 Be-7 2.76E-01 1.38E-01 1.63E-01 K-40 Sample ID: 401338 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016

<9.71E-03 0.00E+00 9.71E-03 I-131

<7.98E-03 0.00E+00 7.98E-03 Cs-134

<7.14E-03 0.00E+00 7.14E-03 Cs-137

<5.00E-02 0.00E+00 5.00E-02 Be-7 6.42E-01 1.72E-01 2.76E-02 K-40 Sample ID: 401788 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016

<5.69E-03 0.00E+00 5.69E-03 I-131 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 17 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 401788 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016

<5.42E-03 0.00E+00 5.42E-03 Cs-134

<6.75E-03 0.00E+00 6.75E-03 Cs-137

<4.27E-02 0.00E+00 4.27E-02 Be-7 3.67E-01 1.41E-01 1.26E-01 K-40 Sample ID: 402299 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016

<6.06E-03 0.00E+00 6.06E-03 I-131

<5.82E-03 0.00E+00 5.82E-03 Cs-134

<7.89E-03 0.00E+00 7.89E-03 Cs-137

<3.62E-02 0.00E+00 3.62E-02 Be-7 4.87E-01 1.49E-01 2.81E-02 K-40 Sample ID: 403027 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016

<7.44E-03 0.00E+00 7.44E-03 I-131

<7.99E-03 0.00E+00 7.99E-03 Cs-134

<8.21E-03 0.00E+00 8.21E-03 Cs-137

<5.60E-02 0.00E+00 5.60E-02 Be-7 3.35E-01 1.49E-01 1.68E-01 K-40 Sample ID: 404508 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016

<6.07E-03 0.00E+00 6.07E-03 I-131

<5.89E-03 0.00E+00 5.89E-03 Cs-134

<1.10E-02 0.00E+00 1.10E-02 Cs-137

<5.16E-02 0.00E+00 5.16E-02 Be-7 2.08E-01 1.01E-01 8.22E-02 K-40 Sample ID: 405391 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016

<7.31E-03 0.00E+00 7.31E-03 I-131

<9.47E-03 0.00E+00 9.47E-03 Cs-134

<6.50E-03 0.00E+00 6.50E-03 Cs-137

<5.12E-02 0.00E+00 5.12E-02 Be-7 2.39E-01 1.02E-01 2.82E-02 K-40 Sample ID: 406008 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016

<7.60E-03 0.00E+00 7.60E-03 I-131

<5.42E-03 0.00E+00 5.42E-03 Cs-134

<8.21E-03 0.00E+00 8.21E-03 Cs-137

<5.27E-02 0.00E+00 5.27E-02 Be-7 3.68E-01 1.28E-01 2.85E-02 K-40 Sample ID: 406353 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016

<1.20E-02 0.00E+00 1.20E-02 I-131

<3.53E-03 0.00E+00 3.53E-03 Cs-134

<5.52E-03 0.00E+00 5.52E-03 Cs-137

<1.06E-02 0.00E+00 1.06E-02 Be-7 4.58E-01 1.43E-01 2.76E-02 K-40 Sample ID: 407539 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016

<5.60E-03 0.00E+00 5.60E-03 I-131

<7.25E-03 0.00E+00 7.25E-03 Cs-134

<1.09E-02 0.00E+00 1.09E-02 Cs-137

<5.41E-02 0.00E+00 5.41E-02 Be-7 3.74E-01 1.54E-01 1.68E-01 K-40 Sample ID: 408116 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016

<9.50E-03 0.00E+00 9.50E-03 I-131

<6.60E-03 0.00E+00 6.60E-03 Cs-134

<8.21E-03 0.00E+00 8.21E-03 Cs-137

<5.25E-02 0.00E+00 5.25E-02 Be-7 3.99E-01 1.34E-01 2.84E-02 K-40 Sample ID: 409429 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016

<6.74E-03 0.00E+00 6.74E-03 I-131

<8.72E-03 0.00E+00 8.72E-03 Cs-134

<4.39E-03 0.00E+00 4.39E-03 Cs-137

<5.46E-02 0.00E+00 5.46E-02 Be-7 2.63E-01 1.23E-01 1.29E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 18 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 409764 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016

<5.53E-03 0.00E+00 5.53E-03 I-131

<6.25E-03 0.00E+00 6.25E-03 Cs-134

<9.88E-03 0.00E+00 9.88E-03 Cs-137

<4.08E-02 0.00E+00 4.08E-02 Be-7 2.90E-01 1.29E-01 1.34E-01 K-40 Sample ID: 410919 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016

<8.99E-03 0.00E+00 8.99E-03 I-131

<7.55E-03 0.00E+00 7.55E-03 Cs-134

<1.06E-02 0.00E+00 1.06E-02 Cs-137

<6.36E-02 0.00E+00 6.36E-02 Be-7 3.66E-01 1.56E-01 1.67E-01 K-40 Sample ID: 411416 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016

<7.87E-03 0.00E+00 7.87E-03 I-131

<6.44E-03 0.00E+00 6.44E-03 Cs-134

<1.00E-02 0.00E+00 1.00E-02 Cs-137

<6.78E-02 0.00E+00 6.78E-02 Be-7 2.86E-01 1.24E-01 1.03E-01 K-40 Sample ID: 411740 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016

<5.87E-03 0.00E+00 5.87E-03 I-131

<7.21E-03 0.00E+00 7.21E-03 Cs-134

<6.42E-03 0.00E+00 6.42E-03 Cs-137

<5.42E-02 0.00E+00 5.42E-02 Be-7 4.61E-01 1.44E-01 2.78E-02 K-40 Sample ID: 412203 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016

<8.58E-03 0.00E+00 8.58E-03 I-131

<6.99E-03 0.00E+00 6.99E-03 Cs-134

<7.58E-03 0.00E+00 7.58E-03 Cs-137

<4.89E-02 0.00E+00 4.89E-02 Be-7 3.30E-01 1.27E-01 1.10E-01 K-40 Sample ID: 412722 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016

<8.60E-03 0.00E+00 8.60E-03 I-131

<7.78E-03 0.00E+00 7.78E-03 Cs-134

<1.14E-02 0.00E+00 1.14E-02 Cs-137

<6.69E-02 0.00E+00 6.69E-02 Be-7 4.21E-01 1.69E-01 1.48E-01 K-40 Sample ID: 413322 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016

<8.49E-03 0.00E+00 8.49E-03 I-131

<6.97E-03 0.00E+00 6.97E-03 Cs-134

<7.12E-03 0.00E+00 7.12E-03 Cs-137

<5.52E-02 0.00E+00 5.52E-02 Be-7 5.22E-01 1.69E-01 1.23E-01 K-40 Sample ID: 413869 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016

<7.46E-03 0.00E+00 7.46E-03 I-131

<7.02E-03 0.00E+00 7.02E-03 Cs-134

<1.00E-02 0.00E+00 1.00E-02 Cs-137

<4.56E-02 0.00E+00 4.56E-02 Be-7 4.48E-01 1.47E-01 3.04E-02 K-40 Sample ID: 415010 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016

<7.79E-03 0.00E+00 7.79E-03 I-131

<5.76E-03 0.00E+00 5.76E-03 Cs-134

<7.81E-03 0.00E+00 7.81E-03 Cs-137

<5.78E-02 0.00E+00 5.78E-02 Be-7 4.02E-01 1.64E-01 1.86E-01 K-40 Sample ID: 415390 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016

<6.94E-03 0.00E+00 6.94E-03 I-131

<6.27E-03 0.00E+00 6.27E-03 Cs-134

<7.79E-03 0.00E+00 7.79E-03 Cs-137

<4.10E-02 0.00E+00 4.10E-02 Be-7 3.31E-01 1.18E-01 2.72E-02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 19 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 416374 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016

<7.87E-03 0.00E+00 7.87E-03 I-131

<1.07E-02 0.00E+00 1.07E-02 Cs-134

<1.12E-02 0.00E+00 1.12E-02 Cs-137

<5.43E-02 0.00E+00 5.43E-02 Be-7 5.90E-01 1.85E-01 3.64E-02 K-40 Sample ID: 416998 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016

<9.02E-03 0.00E+00 9.02E-03 I-131

<6.76E-03 0.00E+00 6.76E-03 Cs-134

<7.16E-03 0.00E+00 7.16E-03 Cs-137

<7.18E-02 0.00E+00 7.18E-02 Be-7 4.99E-01 1.60E-01 1.18E-01 K-40 Sample ID: 417392 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016

<7.90E-03 0.00E+00 7.90E-03 I-131

<7.78E-03 0.00E+00 7.78E-03 Cs-134

<5.66E-03 0.00E+00 5.66E-03 Cs-137

<4.68E-02 0.00E+00 4.68E-02 Be-7 3.80E-01 1.58E-01 1.73E-01 K-40 Sample ID: 417786 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016

<6.20E-03 0.00E+00 6.20E-03 I-131

<6.77E-03 0.00E+00 6.77E-03 Cs-134

<7.83E-03 0.00E+00 7.83E-03 Cs-137

<5.73E-02 0.00E+00 5.73E-02 Be-7 3.24E-01 1.33E-01 1.24E-01 K-40 Sample ID: 418247 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016

<7.83E-03 0.00E+00 7.83E-03 I-131

<9.06E-03 0.00E+00 9.06E-03 Cs-134

<6.70E-03 0.00E+00 6.70E-03 Cs-137

<7.13E-02 0.00E+00 7.13E-02 Be-7 4.08E-01 1.50E-01 1.35E-01 K-40 Sample ID: 418976 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016

<7.84E-03 0.00E+00 7.84E-03 I-131

<5.88E-03 0.00E+00 5.88E-03 Cs-134

<7.30E-03 0.00E+00 7.30E-03 Cs-137

<6.54E-02 0.00E+00 6.54E-02 Be-7 2.70E-01 1.42E-01 1.78E-01 K-40 Sample ID: 419477 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016

<9.89E-03 0.00E+00 9.89E-03 I-131

<7.98E-03 0.00E+00 7.98E-03 Cs-134

<7.53E-03 0.00E+00 7.53E-03 Cs-137

<4.76E-02 0.00E+00 4.76E-02 Be-7

<3.38E-01 0.00E+00 3.38E-01 K-40 Sample ID: 420007 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016

<6.77E-03 0.00E+00 6.77E-03 I-131

<7.02E-03 0.00E+00 7.02E-03 Cs-134

<8.73E-03 0.00E+00 8.73E-03 Cs-137

<5.08E-02 0.00E+00 5.08E-02 Be-7 4.03E-01 1.59E-01 1.58E-01 K-40 Sample ID: 420558 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016

<7.03E-03 0.00E+00 7.03E-03 I-131

<6.80E-03 0.00E+00 6.80E-03 Cs-134

<7.37E-03 0.00E+00 7.37E-03 Cs-137

<5.14E-02 0.00E+00 5.14E-02 Be-7 3.06E-01 1.35E-01 1.53E-01 K-40 Sample ID: 421395 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016

<1.17E-02 0.00E+00 1.17E-02 I-131

<6.70E-03 0.00E+00 6.70E-03 Cs-134

<8.32E-03 0.00E+00 8.32E-03 Cs-137

<6.30E-02 0.00E+00 6.30E-02 Be-7 5.93E-01 1.76E-01 3.22E-02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 20 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 422553 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016

<7.47E-03 0.00E+00 7.47E-03 I-131

<6.46E-03 0.00E+00 6.46E-03 Cs-134

<1.07E-02 0.00E+00 1.07E-02 Cs-137

<5.53E-02 0.00E+00 5.53E-02 Be-7 5.08E-01 1.60E-01 1.06E-01 K-40 Sample ID: 423298 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016

<6.79E-03 0.00E+00 6.79E-03 I-131

<6.27E-03 0.00E+00 6.27E-03 Cs-134

<8.39E-03 0.00E+00 8.39E-03 Cs-137

<6.36E-02 0.00E+00 6.36E-02 Be-7 2.85E-01 1.50E-01 1.94E-01 K-40 Sample ID: 424421 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016

<7.83E-03 0.00E+00 7.83E-03 I-131

<7.33E-03 0.00E+00 7.33E-03 Cs-134

<7.95E-03 0.00E+00 7.95E-03 Cs-137

<5.13E-02 0.00E+00 5.13E-02 Be-7 3.39E-01 1.64E-01 2.07E-01 K-40 Sample ID: 425407 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016

<6.09E-03 0.00E+00 6.09E-03 I-131

<5.78E-03 0.00E+00 5.78E-03 Cs-134

<7.17E-03 0.00E+00 7.17E-03 Cs-137

<4.66E-02 0.00E+00 4.66E-02 Be-7 3.03E-01 1.33E-01 1.39E-01 K-40 Sample ID: 425970 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016

<8.65E-03 0.00E+00 8.65E-03 I-131

<5.79E-03 0.00E+00 5.79E-03 Cs-134

<7.20E-03 0.00E+00 7.20E-03 Cs-137

<6.95E-02 0.00E+00 6.95E-02 Be-7 4.32E-01 1.39E-01 2.79E-02 K-40 Sample ID: 426345 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016

<7.72E-03 0.00E+00 7.72E-03 I-131

<8.40E-03 0.00E+00 8.40E-03 Cs-134

<6.46E-03 0.00E+00 6.46E-03 Cs-137

<3.55E-02 0.00E+00 3.55E-02 Be-7 4.63E-01 1.44E-01 2.79E-02 K-40 Sample ID: 427034 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016

<7.74E-03 0.00E+00 7.74E-03 I-131

<5.76E-03 0.00E+00 5.76E-03 Cs-134

<6.42E-03 0.00E+00 6.42E-03 Cs-137

<5.72E-02 0.00E+00 5.72E-02 Be-7 2.63E-01 1.23E-01 1.29E-01 K-40 Sample ID: 427693 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016

<8.70E-03 0.00E+00 8.70E-03 I-131

<7.95E-03 0.00E+00 7.95E-03 Cs-134

<6.39E-03 0.00E+00 6.39E-03 Cs-137

<6.67E-02 0.00E+00 6.67E-02 Be-7 3.19E-01 1.35E-01 1.36E-01 K-40 Sample ID: 428188 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016

<1.59E-02 0.00E+00 1.59E-02 I-131

<8.63E-03 0.00E+00 8.63E-03 Cs-134

<1.49E-02 0.00E+00 1.49E-02 Cs-137

<8.09E-02 0.00E+00 8.09E-02 Be-7 5.43E-01 2.00E-01 1.57E-01 K-40 Sample ID: 428873 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016

<1.04E-02 0.00E+00 1.04E-02 I-131

<8.61E-03 0.00E+00 8.61E-03 Cs-134

<7.67E-03 0.00E+00 7.67E-03 Cs-137

<6.45E-02 0.00E+00 6.45E-02 Be-7 4.90E-01 1.61E-01 3.32E-02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 21 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 429380 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016

<7.44E-03 0.00E+00 7.44E-03 I-131

<8.53E-03 0.00E+00 8.53E-03 Cs-134

<8.97E-03 0.00E+00 8.97E-03 Cs-137

<4.40E-02 0.00E+00 4.40E-02 Be-7 3.33E-01 1.23E-01 2.91E-02 K-40 Sample ID: 429931 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016

<7.73E-03 0.00E+00 7.73E-03 I-131

<5.71E-03 0.00E+00 5.71E-03 Cs-134

<7.09E-03 0.00E+00 7.09E-03 Cs-137

<5.73E-02 0.00E+00 5.73E-02 Be-7 4.16E-01 1.35E-01 2.75E-02 K-40 Sample ID: 430552 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016

<6.15E-03 0.00E+00 6.15E-03 I-131

<9.02E-03 0.00E+00 9.02E-03 Cs-134

<6.25E-03 0.00E+00 6.25E-03 Cs-137

<3.97E-02 0.00E+00 3.97E-02 Be-7 3.70E-01 1.59E-01 1.72E-01 K-40 Sample ID: 431043 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016

<7.89E-03 0.00E+00 7.89E-03 I-131

<7.58E-03 0.00E+00 7.58E-03 Cs-134

<1.06E-02 0.00E+00 1.06E-02 Cs-137

<5.15E-02 0.00E+00 5.15E-02 Be-7 3.75E-01 1.52E-01 1.50E-01 K-40 Sample ID: 431447 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016

<8.27E-03 0.00E+00 8.27E-03 I-131

<6.31E-03 0.00E+00 6.31E-03 Cs-134

<7.85E-03 0.00E+00 7.85E-03 Cs-137

<5.93E-02 0.00E+00 5.93E-02 Be-7 3.99E-01 1.28E-01 2.57E-02 K-40 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 398679 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016

<1.49E-02 0.00E+00 1.49E-02 I-131

<1.23E-02 0.00E+00 1.23E-02 Cs-134

<1.26E-02 0.00E+00 1.26E-02 Cs-137

<1.14E-01 0.00E+00 1.14E-01 Be-7

<3.81E-01 0.00E+00 3.81E-01 K-40 Sample ID: 398926 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016

<9.51E-03 0.00E+00 9.51E-03 I-131

<7.50E-03 0.00E+00 7.50E-03 Cs-134

<1.17E-02 0.00E+00 1.17E-02 Cs-137

<4.56E-02 0.00E+00 4.56E-02 Be-7 4.55E-01 1.74E-01 1.49E-01 K-40 Sample ID: 399244 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016

<9.89E-03 0.00E+00 9.89E-03 I-131

<1.44E-03 0.00E+00 1.44E-03 Cs-134

<9.96E-03 0.00E+00 9.96E-03 Cs-137

<6.70E-02 0.00E+00 6.70E-02 Be-7

<3.43E-01 0.00E+00 3.43E-01 K-40 Sample ID: 399990 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016

<9.67E-03 0.00E+00 9.67E-03 I-131

<8.70E-03 0.00E+00 8.70E-03 Cs-134

<7.33E-03 0.00E+00 7.33E-03 Cs-137

<6.12E-02 0.00E+00 6.12E-02 Be-7 2.80E-01 1.37E-01 1.53E-01 K-40 Sample ID: 400343 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016

<1.22E-02 0.00E+00 1.22E-02 I-131

<1.60E-02 0.00E+00 1.60E-02 Cs-134

<1.01E-02 0.00E+00 1.01E-02 Cs-137 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 22 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 400343 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016

<9.33E-02 0.00E+00 9.33E-02 Be-7 5.39E-01 2.11E-01 1.56E-01 K-40 Sample ID: 400973 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016

<8.39E-03 0.00E+00 8.39E-03 I-131

<6.91E-03 0.00E+00 6.91E-03 Cs-134

<8.59E-03 0.00E+00 8.59E-03 Cs-137

<5.50E-02 0.00E+00 5.50E-02 Be-7 2.98E-01 1.23E-01 9.91E-02 K-40 Sample ID: 401339 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016

<7.88E-03 0.00E+00 7.88E-03 I-131

<7.07E-03 0.00E+00 7.07E-03 Cs-134

<5.80E-03 0.00E+00 5.80E-03 Cs-137

<5.17E-02 0.00E+00 5.17E-02 Be-7 3.52E-01 1.49E-01 1.62E-01 K-40 Sample ID: 401789 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016

<7.01E-03 0.00E+00 7.01E-03 I-131

<8.23E-03 0.00E+00 8.23E-03 Cs-134

<6.32E-03 0.00E+00 6.32E-03 Cs-137

<7.24E-02 0.00E+00 7.24E-02 Be-7 3.91E-01 1.38E-01 3.11E-02 K-40 Sample ID: 402300 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016

<1.09E-02 0.00E+00 1.09E-02 I-131

<7.67E-03 0.00E+00 7.67E-03 Cs-134

<9.53E-03 0.00E+00 9.53E-03 Cs-137

<6.15E-02 0.00E+00 6.15E-02 Be-7 4.45E-01 1.57E-01 1.21E-01 K-40 Sample ID: 403028 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016

<6.81E-03 0.00E+00 6.81E-03 I-131

<6.45E-03 0.00E+00 6.45E-03 Cs-134

<1.00E-02 0.00E+00 1.00E-02 Cs-137

<5.10E-02 0.00E+00 5.10E-02 Be-7 3.95E-01 1.47E-01 1.17E-01 K-40 Sample ID: 404509 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016

<8.46E-03 0.00E+00 8.46E-03 I-131

<7.07E-03 0.00E+00 7.07E-03 Cs-134

<5.80E-03 0.00E+00 5.80E-03 Cs-137

<6.33E-02 0.00E+00 6.33E-02 Be-7 3.17E-01 1.36E-01 1.40E-01 K-40 Sample ID: 405392 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016

<9.72E-03 0.00E+00 9.72E-03 I-131

<6.85E-03 0.00E+00 6.85E-03 Cs-134

<7.25E-03 0.00E+00 7.25E-03 Cs-137

<5.50E-02 0.00E+00 5.50E-02 Be-7 3.53E-01 1.35E-01 1.12E-01 K-40 Sample ID: 406009 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016

<1.01E-02 0.00E+00 1.01E-02 I-131

<5.25E-03 0.00E+00 5.25E-03 Cs-134

<7.28E-03 0.00E+00 7.28E-03 Cs-137

<6.24E-02 0.00E+00 6.24E-02 Be-7

<2.76E-01 0.00E+00 2.76E-01 K-40 Sample ID: 406354 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016

<9.91E-03 0.00E+00 9.91E-03 I-131

<8.15E-03 0.00E+00 8.15E-03 Cs-134

<8.56E-03 0.00E+00 8.56E-03 Cs-137

<4.29E-02 0.00E+00 4.29E-02 Be-7 4.46E-01 1.62E-01 1.56E-01 K-40 Sample ID: 407540 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016

<1.14E-02 0.00E+00 1.14E-02 I-131 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 23 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 407540 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016

<6.44E-03 0.00E+00 6.44E-03 Cs-134

<8.00E-03 0.00E+00 8.00E-03 Cs-137

<5.56E-02 0.00E+00 5.56E-02 Be-7 4.18E-01 1.50E-01 1.14E-01 K-40 Sample ID: 408117 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016

<1.00E-02 0.00E+00 1.00E-02 I-131

<5.90E-03 0.00E+00 5.90E-03 Cs-134

<8.92E-03 0.00E+00 8.92E-03 Cs-137

<5.76E-02 0.00E+00 5.76E-02 Be-7 4.40E-01 1.54E-01 1.10E-01 K-40 Sample ID: 409430 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016

<8.93E-03 0.00E+00 8.93E-03 I-131

<7.76E-03 0.00E+00 7.76E-03 Cs-134

<7.36E-03 0.00E+00 7.36E-03 Cs-137

<5.30E-02 0.00E+00 5.30E-02 Be-7 3.46E-01 1.41E-01 1.23E-01 K-40 Sample ID: 409765 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016

<7.29E-03 0.00E+00 7.29E-03 I-131

<7.12E-03 0.00E+00 7.12E-03 Cs-134

<7.72E-03 0.00E+00 7.72E-03 Cs-137

<4.07E-02 0.00E+00 4.07E-02 Be-7 3.55E-01 1.32E-01 1.03E-01 K-40 Sample ID: 410920 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016

<6.94E-03 0.00E+00 6.94E-03 I-131

<9.12E-03 0.00E+00 9.12E-03 Cs-134

<4.61E-03 0.00E+00 4.61E-03 Cs-137

<4.76E-02 0.00E+00 4.76E-02 Be-7 3.41E-01 1.40E-01 1.40E-01 K-40 Sample ID: 411417 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016

<1.16E-02 0.00E+00 1.16E-02 I-131

<7.53E-03 0.00E+00 7.53E-03 Cs-134

<8.18E-03 0.00E+00 8.18E-03 Cs-137

<5.61E-02 0.00E+00 5.61E-02 Be-7 2.51E-01 1.05E-01 2.83E-02 K-40 Sample ID: 411741 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016

<7.23E-03 0.00E+00 7.23E-03 I-131

<7.21E-03 0.00E+00 7.21E-03 Cs-134

<7.81E-03 0.00E+00 7.81E-03 Cs-137

<4.64E-02 0.00E+00 4.64E-02 Be-7 3.78E-01 1.38E-01 1.08E-01 K-40 Sample ID: 412204 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016

<8.37E-03 0.00E+00 8.37E-03 I-131

<5.12E-03 0.00E+00 5.12E-03 Cs-134

<7.74E-03 0.00E+00 7.74E-03 Cs-137

<3.55E-02 0.00E+00 3.55E-02 Be-7 3.94E-01 1.58E-01 1.77E-01 K-40 Sample ID: 412723 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016

<9.27E-03 0.00E+00 9.27E-03 I-131

<9.00E-03 0.00E+00 9.00E-03 Cs-134

<9.25E-03 0.00E+00 9.25E-03 Cs-137

<6.73E-02 0.00E+00 6.73E-02 Be-7 5.81E-01 1.76E-01 3.28E-02 K-40 Sample ID: 413323 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016

<7.90E-03 0.00E+00 7.90E-03 I-131

<8.31E-03 0.00E+00 8.31E-03 Cs-134

<8.14E-03 0.00E+00 8.14E-03 Cs-137

<6.24E-02 0.00E+00 6.24E-02 Be-7 3.05E-01 1.24E-01 1.04E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 24 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 413870 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016

<8.70E-03 0.00E+00 8.70E-03 I-131

<6.33E-03 0.00E+00 6.33E-03 Cs-134

<7.21E-03 0.00E+00 7.21E-03 Cs-137

<5.03E-02 0.00E+00 5.03E-02 Be-7 4.53E-01 1.60E-01 1.46E-01 K-40 Sample ID: 415011 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016

<7.21E-03 0.00E+00 7.21E-03 I-131

<7.21E-03 0.00E+00 7.21E-03 Cs-134

<6.43E-03 0.00E+00 6.43E-03 Cs-137

<6.71E-02 0.00E+00 6.71E-02 Be-7 3.92E-01 1.39E-01 1.04E-01 K-40 Sample ID: 415391 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016

<7.56E-03 0.00E+00 7.56E-03 I-131

<6.71E-03 0.00E+00 6.71E-03 Cs-134

<4.89E-03 0.00E+00 4.89E-03 Cs-137

<5.37E-02 0.00E+00 5.37E-02 Be-7 2.15E-01 1.20E-01 1.54E-01 K-40 Sample ID: 416375 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016

<4.82E-03 0.00E+00 4.82E-03 I-131

<8.38E-03 0.00E+00 8.38E-03 Cs-134

<1.04E-02 0.00E+00 1.04E-02 Cs-137

<5.43E-02 0.00E+00 5.43E-02 Be-7 5.36E-01 1.75E-01 3.63E-02 K-40 Sample ID: 416999 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016

<7.96E-03 0.00E+00 7.96E-03 I-131

<8.15E-03 0.00E+00 8.15E-03 Cs-134

<7.97E-03 0.00E+00 7.97E-03 Cs-137

<5.85E-02 0.00E+00 5.85E-02 Be-7 4.81E-01 1.48E-01 2.83E-02 K-40 Sample ID: 417393 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016

<7.78E-03 0.00E+00 7.78E-03 I-131

<7.60E-03 0.00E+00 7.60E-03 Cs-134

<8.39E-03 0.00E+00 8.39E-03 Cs-137

<5.00E-02 0.00E+00 5.00E-02 Be-7 3.68E-01 1.45E-01 1.44E-01 K-40 Sample ID: 417787 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016

<6.91E-03 0.00E+00 6.91E-03 I-131

<3.69E-03 0.00E+00 3.69E-03 Cs-134

<8.19E-03 0.00E+00 8.19E-03 Cs-137

<4.75E-02 0.00E+00 4.75E-02 Be-7 4.03E-01 1.41E-01 9.64E-02 K-40 Sample ID: 418248 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016

<9.60E-03 0.00E+00 9.60E-03 I-131

<7.12E-03 0.00E+00 7.12E-03 Cs-134

<1.07E-02 0.00E+00 1.07E-02 Cs-137

<1.17E-02 0.00E+00 1.17E-02 Be-7 4.57E-01 1.58E-01 1.18E-01 K-40 Sample ID: 418977 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016

<6.58E-03 0.00E+00 6.58E-03 I-131

<6.31E-03 0.00E+00 6.31E-03 Cs-134

<7.85E-03 0.00E+00 7.85E-03 Cs-137

<2.84E-02 0.00E+00 2.84E-02 Be-7 3.92E-01 1.40E-01 1.06E-01 K-40 Sample ID: 419478 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016

<4.80E-03 0.00E+00 4.80E-03 I-131

<6.79E-03 0.00E+00 6.79E-03 Cs-134

<9.00E-03 0.00E+00 9.00E-03 Cs-137

<5.75E-02 0.00E+00 5.75E-02 Be-7 3.66E-01 1.40E-01 1.25E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 25 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 420008 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016

<9.39E-03 0.00E+00 9.39E-03 I-131

<6.80E-03 0.00E+00 6.80E-03 Cs-134

<1.09E-02 0.00E+00 1.09E-02 Cs-137

<2.82E-02 0.00E+00 2.82E-02 Be-7 5.35E-01 1.56E-01 2.79E-02 K-40 Sample ID: 420559 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016

<5.53E-03 0.00E+00 5.53E-03 I-131

<6.16E-03 0.00E+00 6.16E-03 Cs-134

<7.67E-03 0.00E+00 7.67E-03 Cs-137

<5.83E-02 0.00E+00 5.83E-02 Be-7 3.83E-01 1.22E-01 2.47E-02 K-40 Sample ID: 421396 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016

<1.11E-02 0.00E+00 1.11E-02 I-131

<9.53E-03 0.00E+00 9.53E-03 Cs-134

<8.53E-03 0.00E+00 8.53E-03 Cs-137

<5.99E-02 0.00E+00 5.99E-02 Be-7 4.89E-01 1.61E-01 3.31E-02 K-40 Sample ID: 422554 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016

<6.11E-03 0.00E+00 6.11E-03 I-131

<7.03E-03 0.00E+00 7.03E-03 Cs-134

<8.01E-03 0.00E+00 8.01E-03 Cs-137

<6.37E-02 0.00E+00 6.37E-02 Be-7 3.44E-01 1.49E-01 1.55E-01 K-40 Sample ID: 423299 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016

<9.43E-03 0.00E+00 9.43E-03 I-131

<6.41E-03 0.00E+00 6.41E-03 Cs-134

<8.70E-03 0.00E+00 8.70E-03 Cs-137

<1.14E-02 0.00E+00 1.14E-02 Be-7 4.25E-01 1.63E-01 1.58E-01 K-40 Sample ID: 424422 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016

<9.11E-03 0.00E+00 9.11E-03 I-131

<7.61E-03 0.00E+00 7.61E-03 Cs-134

<5.54E-03 0.00E+00 5.54E-03 Cs-137

<4.14E-02 0.00E+00 4.14E-02 Be-7 4.25E-01 1.58E-01 1.56E-01 K-40 Sample ID: 425408 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016

<8.13E-03 0.00E+00 8.13E-03 I-131

<7.58E-03 0.00E+00 7.58E-03 Cs-134

<7.19E-03 0.00E+00 7.19E-03 Cs-137

<6.47E-02 0.00E+00 6.47E-02 Be-7 4.50E-01 1.58E-01 1.23E-01 K-40 Sample ID: 425971 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016

<6.25E-03 0.00E+00 6.25E-03 I-131

<5.15E-03 0.00E+00 5.15E-03 Cs-134

<4.38E-03 0.00E+00 4.38E-03 Cs-137

<4.11E-02 0.00E+00 4.11E-02 Be-7 4.73E-01 1.59E-01 1.36E-01 K-40 Sample ID: 426346 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016

<6.21E-03 0.00E+00 6.21E-03 I-131

<7.21E-03 0.00E+00 7.21E-03 Cs-134

<6.42E-03 0.00E+00 6.42E-03 Cs-137

<4.59E-02 0.00E+00 4.59E-02 Be-7 3.55E-01 1.37E-01 1.19E-01 K-40 Sample ID: 427035 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016

<6.91E-03 0.00E+00 6.91E-03 I-131

<8.51E-03 0.00E+00 8.51E-03 Cs-134

<7.29E-03 0.00E+00 7.29E-03 Cs-137

<6.48E-02 0.00E+00 6.48E-02 Be-7 4.80E-01 1.48E-01 2.83E-02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 26 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 427694 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016

<9.04E-03 0.00E+00 9.04E-03 I-131

<6.39E-03 0.00E+00 6.39E-03 Cs-134

<9.32E-03 0.00E+00 9.32E-03 Cs-137

<7.40E-02 0.00E+00 7.40E-02 Be-7 3.88E-01 1.48E-01 1.25E-01 K-40 Sample ID: 428189 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016

<1.32E-02 0.00E+00 1.32E-02 I-131

<1.10E-02 0.00E+00 1.10E-02 Cs-134

<1.28E-02 0.00E+00 1.28E-02 Cs-137

<5.44E-02 0.00E+00 5.44E-02 Be-7 4.95E-01 1.91E-01 1.52E-01 K-40 Sample ID: 428874 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016

<8.65E-03 0.00E+00 8.65E-03 I-131

<6.71E-03 0.00E+00 6.71E-03 Cs-134

<8.34E-03 0.00E+00 8.34E-03 Cs-137

<5.84E-02 0.00E+00 5.84E-02 Be-7 4.94E-01 1.77E-01 1.60E-01 K-40 Sample ID: 429381 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016

<5.80E-03 0.00E+00 5.80E-03 I-131

<7.74E-03 0.00E+00 7.74E-03 Cs-134

<5.70E-03 0.00E+00 5.70E-03 Cs-137

<5.43E-02 0.00E+00 5.43E-02 Be-7 4.39E-01 1.38E-01 8.84E-02 K-40 Sample ID: 429932 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016

<1.01E-02 0.00E+00 1.01E-02 I-131

<5.72E-03 0.00E+00 5.72E-03 Cs-134

<9.32E-03 0.00E+00 9.32E-03 Cs-137

<6.38E-02 0.00E+00 6.38E-02 Be-7 4.78E-01 1.52E-01 3.01E-02 K-40 Sample ID: 430553 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016

<9.47E-03 0.00E+00 9.47E-03 I-131

<7.57E-03 0.00E+00 7.57E-03 Cs-134

<1.11E-02 0.00E+00 1.11E-02 Cs-137

<6.38E-02 0.00E+00 6.38E-02 Be-7

<3.36E-01 0.00E+00 3.36E-01 K-40 Sample ID: 431044 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016

<7.43E-03 0.00E+00 7.43E-03 I-131

<5.10E-03 0.00E+00 5.10E-03 Cs-134

<9.61E-03 0.00E+00 9.61E-03 Cs-137

<4.72E-02 0.00E+00 4.72E-02 Be-7

<2.94E-01 0.00E+00 2.94E-01 K-40 Sample ID: 431448 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016

<8.06E-03 0.00E+00 8.06E-03 I-131

<7.46E-03 0.00E+00 7.46E-03 Cs-134

<7.99E-03 0.00E+00 7.99E-03 Cs-137

<4.50E-02 0.00E+00 4.50E-02 Be-7 3.02E-01 1.08E-01 2.48E-02 K-40 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 398680 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016

<1.49E-02 0.00E+00 1.49E-02 I-131

<1.41E-02 0.00E+00 1.41E-02 Cs-134

<1.15E-02 0.00E+00 1.15E-02 Cs-137

<7.57E-02 0.00E+00 7.57E-02 Be-7 3.17E-01 1.96E-01 2.65E-01 K-40 Sample ID: 398927 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016

<1.07E-02 0.00E+00 1.07E-02 I-131

<9.73E-03 0.00E+00 9.73E-03 Cs-134

<7.82E-03 0.00E+00 7.82E-03 Cs-137 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 27 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 398927 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016

<6.88E-02 0.00E+00 6.88E-02 Be-7

<1.14E-01 0.00E+00 1.14E-01 K-40 Sample ID: 399245 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016

<5.63E-03 0.00E+00 5.63E-03 I-131

<5.82E-03 0.00E+00 5.82E-03 Cs-134

<7.24E-03 0.00E+00 7.24E-03 Cs-137

<6.99E-02 0.00E+00 6.99E-02 Be-7 3.63E-01 1.27E-01 2.81E-02 K-40 Sample ID: 399991 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016

<9.59E-03 0.00E+00 9.59E-03 I-131

<6.48E-03 0.00E+00 6.48E-03 Cs-134

<8.66E-03 0.00E+00 8.66E-03 Cs-137

<5.15E-02 0.00E+00 5.15E-02 Be-7

<2.94E-01 0.00E+00 2.94E-01 K-40 Sample ID: 400344 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016

<1.33E-02 0.00E+00 1.33E-02 I-131

<1.47E-02 0.00E+00 1.47E-02 Cs-134

<1.31E-02 0.00E+00 1.31E-02 Cs-137

<1.07E-01 0.00E+00 1.07E-01 Be-7 5.94E-01 2.50E-01 2.69E-01 K-40 Sample ID: 400974 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016

<5.65E-03 0.00E+00 5.65E-03 I-131

<7.33E-03 0.00E+00 7.33E-03 Cs-134

<8.56E-03 0.00E+00 8.56E-03 Cs-137

<6.46E-02 0.00E+00 6.46E-02 Be-7 3.26E-01 1.30E-01 1.09E-01 K-40 Sample ID: 401340 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016

<5.62E-03 0.00E+00 5.62E-03 I-131

<7.73E-03 0.00E+00 7.73E-03 Cs-134

<7.94E-03 0.00E+00 7.94E-03 Cs-137

<3.59E-02 0.00E+00 3.59E-02 Be-7 3.99E-01 1.42E-01 1.06E-01 K-40 Sample ID: 401790 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016

<5.67E-03 0.00E+00 5.67E-03 I-131

<6.89E-03 0.00E+00 6.89E-03 Cs-134

<7.97E-03 0.00E+00 7.97E-03 Cs-137

<6.48E-02 0.00E+00 6.48E-02 Be-7 4.02E-01 1.41E-01 1.00E-01 K-40 Sample ID: 402301 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016

<8.41E-03 0.00E+00 8.41E-03 I-131

<5.73E-03 0.00E+00 5.73E-03 Cs-134

<7.11E-03 0.00E+00 7.11E-03 Cs-137

<5.43E-02 0.00E+00 5.43E-02 Be-7 3.06E-01 1.24E-01 1.04E-01 K-40 Sample ID: 403029 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016

<6.87E-03 0.00E+00 6.87E-03 I-131

<8.52E-03 0.00E+00 8.52E-03 Cs-134

<6.55E-03 0.00E+00 6.55E-03 Cs-137

<5.09E-02 0.00E+00 5.09E-02 Be-7 2.99E-01 1.33E-01 1.39E-01 K-40 Sample ID: 404510 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016

<6.74E-03 0.00E+00 6.74E-03 I-131

<8.13E-03 0.00E+00 8.13E-03 Cs-134

<9.62E-03 0.00E+00 9.62E-03 Cs-137

<5.88E-02 0.00E+00 5.88E-02 Be-7 4.59E-01 1.44E-01 2.83E-02 K-40 Sample ID: 405393 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016

<8.95E-03 0.00E+00 8.95E-03 I-131 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 28 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 405393 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016

<6.37E-03 0.00E+00 6.37E-03 Cs-134

<7.91E-03 0.00E+00 7.91E-03 Cs-137

<5.12E-02 0.00E+00 5.12E-02 Be-7 3.30E-01 1.34E-01 1.23E-01 K-40 Sample ID: 406010 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016

<6.90E-03 0.00E+00 6.90E-03 I-131

<5.89E-03 0.00E+00 5.89E-03 Cs-134

<8.90E-03 0.00E+00 8.90E-03 Cs-137

<4.08E-02 0.00E+00 4.08E-02 Be-7 4.45E-01 1.59E-01 1.30E-01 K-40 Sample ID: 406355 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016

<8.80E-03 0.00E+00 8.80E-03 I-131

<7.52E-03 0.00E+00 7.52E-03 Cs-134

<8.16E-03 0.00E+00 8.16E-03 Cs-137

<4.85E-02 0.00E+00 4.85E-02 Be-7 2.69E-01 1.14E-01 8.69E-02 K-40 Sample ID: 407541 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016

<6.60E-03 0.00E+00 6.60E-03 I-131

<5.80E-03 0.00E+00 5.80E-03 Cs-134

<9.52E-03 0.00E+00 9.52E-03 Cs-137

<6.44E-02 0.00E+00 6.44E-02 Be-7 3.67E-01 1.49E-01 1.54E-01 K-40 Sample ID: 408118 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016

<5.32E-03 0.00E+00 5.32E-03 I-131

<8.19E-03 0.00E+00 8.19E-03 Cs-134

<8.61E-03 0.00E+00 8.61E-03 Cs-137

<4.26E-02 0.00E+00 4.26E-02 Be-7 4.56E-01 1.68E-01 1.70E-01 K-40 Sample ID: 409431 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016

<1.00E-02 0.00E+00 1.00E-02 I-131

<6.07E-03 0.00E+00 6.07E-03 Cs-134

<7.55E-03 0.00E+00 7.55E-03 Cs-137

<4.84E-02 0.00E+00 4.84E-02 Be-7 4.16E-01 1.43E-01 9.86E-02 K-40 Sample ID: 409766 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016

<5.65E-03 0.00E+00 5.65E-03 I-131

<8.44E-03 0.00E+00 8.44E-03 Cs-134

<1.05E-02 0.00E+00 1.05E-02 Cs-137

<5.80E-02 0.00E+00 5.80E-02 Be-7 3.24E-01 1.54E-01 1.89E-01 K-40 Sample ID: 410921 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016

<7.01E-03 0.00E+00 7.01E-03 I-131

<7.18E-03 0.00E+00 7.18E-03 Cs-134

<7.33E-03 0.00E+00 7.33E-03 Cs-137

<6.89E-02 0.00E+00 6.89E-02 Be-7 3.90E-01 1.38E-01 3.11E-02 K-40 Sample ID: 411418 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016

<5.71E-03 0.00E+00 5.71E-03 I-131

<6.55E-03 0.00E+00 6.55E-03 Cs-134

<1.07E-02 0.00E+00 1.07E-02 Cs-137

<3.21E-02 0.00E+00 3.21E-02 Be-7 3.77E-01 1.56E-01 1.62E-01 K-40 Sample ID: 411742 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016

<8.42E-03 0.00E+00 8.42E-03 I-131

<6.44E-03 0.00E+00 6.44E-03 Cs-134

<9.16E-03 0.00E+00 9.16E-03 Cs-137

<5.17E-02 0.00E+00 5.17E-02 Be-7 3.46E-01 1.24E-01 2.84E-02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 29 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 412205 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016

<7.16E-03 0.00E+00 7.16E-03 I-131

<6.02E-03 0.00E+00 6.02E-03 Cs-134

<5.70E-03 0.00E+00 5.70E-03 Cs-137

<4.13E-02 0.00E+00 4.13E-02 Be-7 4.01E-01 1.26E-01 2.47E-02 K-40 Sample ID: 412724 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016

<7.68E-03 0.00E+00 7.68E-03 I-131

<1.06E-02 0.00E+00 1.06E-02 Cs-134

<1.27E-02 0.00E+00 1.27E-02 Cs-137

<5.87E-02 0.00E+00 5.87E-02 Be-7 6.63E-01 1.97E-01 1.26E-01 K-40 Sample ID: 413324 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016

<6.96E-03 0.00E+00 6.96E-03 I-131

<7.66E-03 0.00E+00 7.66E-03 Cs-134

<9.52E-03 0.00E+00 9.52E-03 Cs-137

<4.64E-02 0.00E+00 4.64E-02 Be-7 2.73E-01 1.32E-01 1.40E-01 K-40 Sample ID: 413871 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016

<4.92E-03 0.00E+00 4.92E-03 I-131

<7.56E-03 0.00E+00 7.56E-03 Cs-134

<6.74E-03 0.00E+00 6.74E-03 Cs-137

<5.59E-02 0.00E+00 5.59E-02 Be-7 2.70E-01 1.26E-01 1.32E-01 K-40 Sample ID: 415012 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016

<6.61E-03 0.00E+00 6.61E-03 I-131

<6.30E-03 0.00E+00 6.30E-03 Cs-134

<8.42E-03 0.00E+00 8.42E-03 Cs-137

<6.42E-02 0.00E+00 6.42E-02 Be-7 4.05E-01 1.40E-01 9.42E-02 K-40 Sample ID: 415392 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016

<7.51E-03 0.00E+00 7.51E-03 I-131

<6.64E-03 0.00E+00 6.64E-03 Cs-134

<7.32E-03 0.00E+00 7.32E-03 Cs-137

<4.03E-02 0.00E+00 4.03E-02 Be-7 3.65E-01 1.27E-01 9.77E-02 K-40 Sample ID: 416376 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016

<8.79E-03 0.00E+00 8.79E-03 I-131

<9.39E-03 0.00E+00 9.39E-03 Cs-134

<9.19E-03 0.00E+00 9.19E-03 Cs-137

<5.84E-02 0.00E+00 5.84E-02 Be-7 4.81E-01 1.58E-01 3.26E-02 K-40 Sample ID: 417000 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016

<1.01E-02 0.00E+00 1.01E-02 I-131

<8.01E-03 0.00E+00 8.01E-03 Cs-134

<9.36E-03 0.00E+00 9.36E-03 Cs-137

<3.92E-02 0.00E+00 3.92E-02 Be-7 5.47E-01 1.64E-01 3.03E-02 K-40 Sample ID: 417394 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016

<8.47E-03 0.00E+00 8.47E-03 I-131

<5.75E-03 0.00E+00 5.75E-03 Cs-134

<9.98E-03 0.00E+00 9.98E-03 Cs-137

<7.04E-02 0.00E+00 7.04E-02 Be-7 3.09E-01 1.68E-01 2.22E-01 K-40 Sample ID: 417788 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016

<7.60E-03 0.00E+00 7.60E-03 I-131

<7.69E-03 0.00E+00 7.69E-03 Cs-134

<8.89E-03 0.00E+00 8.89E-03 Cs-137

<6.10E-02 0.00E+00 6.10E-02 Be-7 4.46E-01 1.48E-01 3.10E-02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 30 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 418249 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016

<1.00E-02 0.00E+00 1.00E-02 I-131

<7.16E-03 0.00E+00 7.16E-03 Cs-134

<7.12E-03 0.00E+00 7.12E-03 Cs-137

<4.98E-02 0.00E+00 4.98E-02 Be-7 4.11E-01 1.63E-01 1.80E-01 K-40 Sample ID: 418978 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016

<8.71E-03 0.00E+00 8.71E-03 I-131

<7.61E-03 0.00E+00 7.61E-03 Cs-134

<4.38E-03 0.00E+00 4.38E-03 Cs-137

<5.05E-02 0.00E+00 5.05E-02 Be-7 5.51E-01 1.58E-01 2.76E-02 K-40 Sample ID: 419479 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016

<8.70E-03 0.00E+00 8.70E-03 I-131

<8.67E-03 0.00E+00 8.67E-03 Cs-134

<6.31E-03 0.00E+00 6.31E-03 Cs-137

<4.66E-02 0.00E+00 4.66E-02 Be-7 3.21E-01 1.52E-01 1.75E-01 K-40 Sample ID: 420009 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016

<6.88E-03 0.00E+00 6.88E-03 I-131

<8.37E-03 0.00E+00 8.37E-03 Cs-134

<5.81E-03 0.00E+00 5.81E-03 Cs-137

<6.27E-02 0.00E+00 6.27E-02 Be-7 3.77E-01 1.40E-01 1.15E-01 K-40 Sample ID: 420560 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016

<1.03E-02 0.00E+00 1.03E-02 I-131

<6.24E-03 0.00E+00 6.24E-03 Cs-134

<7.09E-03 0.00E+00 7.09E-03 Cs-137

<5.02E-02 0.00E+00 5.02E-02 Be-7 3.79E-01 1.36E-01 1.06E-01 K-40 Sample ID: 421397 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016

<8.41E-03 0.00E+00 8.41E-03 I-131

<9.57E-03 0.00E+00 9.57E-03 Cs-134

<9.51E-03 0.00E+00 9.51E-03 Cs-137

<7.16E-02 0.00E+00 7.16E-02 Be-7 4.68E-01 1.75E-01 1.43E-01 K-40 Sample ID: 422555 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016

<7.45E-03 0.00E+00 7.45E-03 I-131

<5.42E-03 0.00E+00 5.42E-03 Cs-134

<6.74E-03 0.00E+00 6.74E-03 Cs-137

<5.20E-02 0.00E+00 5.20E-02 Be-7 5.15E-01 1.53E-01 2.85E-02 K-40 Sample ID: 423300 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016

<7.89E-03 0.00E+00 7.89E-03 I-131

<6.56E-03 0.00E+00 6.56E-03 Cs-134

<7.49E-03 0.00E+00 7.49E-03 Cs-137

<5.92E-02 0.00E+00 5.92E-02 Be-7 3.47E-01 1.45E-01 1.51E-01 K-40 Sample ID: 424423 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016

<7.18E-03 0.00E+00 7.18E-03 I-131

<6.73E-03 0.00E+00 6.73E-03 Cs-134

<7.12E-03 0.00E+00 7.12E-03 Cs-137

<5.03E-02 0.00E+00 5.03E-02 Be-7 3.96E-01 1.32E-01 2.75E-02 K-40 Sample ID: 425409 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016

<9.01E-03 0.00E+00 9.01E-03 I-131

<7.68E-03 0.00E+00 7.68E-03 Cs-134

<1.00E-02 0.00E+00 1.00E-02 Cs-137

<5.15E-02 0.00E+00 5.15E-02 Be-7 4.00E-01 1.56E-01 1.62E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 31 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 425972 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016

<6.35E-03 0.00E+00 6.35E-03 I-131

<7.35E-03 0.00E+00 7.35E-03 Cs-134

<7.31E-03 0.00E+00 7.31E-03 Cs-137

<3.62E-02 0.00E+00 3.62E-02 Be-7 4.71E-01 1.47E-01 2.84E-02 K-40 Sample ID: 426347 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016

<8.93E-03 0.00E+00 8.93E-03 I-131

<5.77E-03 0.00E+00 5.77E-03 Cs-134

<7.17E-03 0.00E+00 7.17E-03 Cs-137

<5.09E-02 0.00E+00 5.09E-02 Be-7 2.98E-01 1.56E-01 1.98E-01 K-40 Sample ID: 427036 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016

<8.62E-03 0.00E+00 8.62E-03 I-131

<5.16E-03 0.00E+00 5.16E-03 Cs-134

<8.96E-03 0.00E+00 8.96E-03 Cs-137

<5.00E-02 0.00E+00 5.00E-02 Be-7 3.18E-01 1.27E-01 1.08E-01 K-40 Sample ID: 427695 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016

<5.73E-03 0.00E+00 5.73E-03 I-131

<7.66E-03 0.00E+00 7.66E-03 Cs-134

<8.84E-03 0.00E+00 8.84E-03 Cs-137

<6.53E-02 0.00E+00 6.53E-02 Be-7 2.21E-01 1.12E-01 1.07E-01 K-40 Sample ID: 428190 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016

<8.39E-03 0.00E+00 8.39E-03 I-131

<7.92E-03 0.00E+00 7.92E-03 Cs-134

<8.09E-03 0.00E+00 8.09E-03 Cs-137

<7.28E-02 0.00E+00 7.28E-02 Be-7 6.25E-01 2.16E-01 2.09E-01 K-40 Sample ID: 428875 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016

<1.09E-02 0.00E+00 1.09E-02 I-131

<8.67E-03 0.00E+00 8.67E-03 Cs-134

<7.30E-03 0.00E+00 7.30E-03 Cs-137

<7.28E-02 0.00E+00 7.28E-02 Be-7 4.77E-01 1.55E-01 3.15E-02 K-40 Sample ID: 429382 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016

<5.78E-03 0.00E+00 5.78E-03 I-131

<5.62E-03 0.00E+00 5.62E-03 Cs-134

<6.99E-03 0.00E+00 6.99E-03 Cs-137

<5.71E-02 0.00E+00 5.71E-02 Be-7

<2.58E-01 0.00E+00 2.58E-01 K-40 Sample ID: 429933 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016

<9.06E-03 0.00E+00 9.06E-03 I-131

<6.97E-03 0.00E+00 6.97E-03 Cs-134

<9.92E-03 0.00E+00 9.92E-03 Cs-137

<5.57E-02 0.00E+00 5.57E-02 Be-7 1.69E-01 1.50E-01 2.31E-01 K-40 Sample ID: 430554 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016

<9.24E-03 0.00E+00 9.24E-03 I-131

<7.20E-03 0.00E+00 7.20E-03 Cs-134

<7.34E-03 0.00E+00 7.34E-03 Cs-137

<5.23E-02 0.00E+00 5.23E-02 Be-7 4.03E-01 1.61E-01 1.63E-01 K-40 Sample ID: 431045 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016

<1.00E-02 0.00E+00 1.00E-02 I-131

<7.67E-03 0.00E+00 7.67E-03 Cs-134

<1.00E-02 0.00E+00 1.00E-02 Cs-137

<4.65E-02 0.00E+00 4.65E-02 Be-7 3.70E-01 1.39E-01 1.18E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 32 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 431449 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016

<7.31E-03 0.00E+00 7.31E-03 I-131

<6.12E-03 0.00E+00 6.12E-03 Cs-134

<7.61E-03 0.00E+00 7.61E-03 Cs-137

<5.59E-02 0.00E+00 5.59E-02 Be-7 4.06E-01 1.58E-01 1.72E-01 K-40 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 398681 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016

<1.39E-02 0.00E+00 1.39E-02 I-131

<1.34E-02 0.00E+00 1.34E-02 Cs-134

<1.43E-02 0.00E+00 1.43E-02 Cs-137

<8.17E-02 0.00E+00 8.17E-02 Be-7 2.24E-01 1.94E-01 2.93E-01 K-40 Sample ID: 398928 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016

<7.15E-03 0.00E+00 7.15E-03 I-131

<8.71E-03 0.00E+00 8.71E-03 Cs-134

<8.67E-03 0.00E+00 8.67E-03 Cs-137

<5.51E-02 0.00E+00 5.51E-02 Be-7 4.05E-01 1.53E-01 1.09E-01 K-40 Sample ID: 399246 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016

<9.52E-03 0.00E+00 9.52E-03 I-131

<9.40E-03 0.00E+00 9.40E-03 Cs-134

<8.79E-03 0.00E+00 8.79E-03 Cs-137

<3.14E-02 0.00E+00 3.14E-02 Be-7 3.24E-01 1.62E-01 2.01E-01 K-40 Sample ID: 399992 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016

<5.68E-03 0.00E+00 5.68E-03 I-131

<5.46E-03 0.00E+00 5.46E-03 Cs-134

<8.27E-03 0.00E+00 8.27E-03 Cs-137

<6.96E-02 0.00E+00 6.96E-02 Be-7 5.21E-01 1.66E-01 1.19E-01 K-40 Sample ID: 400345 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016

<1.67E-02 0.00E+00 1.67E-02 I-131

<1.76E-02 0.00E+00 1.76E-02 Cs-134

<1.30E-02 0.00E+00 1.30E-02 Cs-137

<1.17E-01 0.00E+00 1.17E-01 Be-7 6.11E-01 2.13E-01 4.73E-02 K-40 Sample ID: 400975 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016

<8.81E-03 0.00E+00 8.81E-03 I-131

<7.10E-03 0.00E+00 7.10E-03 Cs-134

<8.21E-03 0.00E+00 8.21E-03 Cs-137

<6.63E-02 0.00E+00 6.63E-02 Be-7 4.91E-01 1.65E-01 1.37E-01 K-40 Sample ID: 401341 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016

<7.28E-03 0.00E+00 7.28E-03 I-131

<5.16E-03 0.00E+00 5.16E-03 Cs-134

<5.53E-03 0.00E+00 5.53E-03 Cs-137

<6.06E-02 0.00E+00 6.06E-02 Be-7 3.37E-01 1.41E-01 1.46E-01 K-40 Sample ID: 401791 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016

<6.92E-03 0.00E+00 6.92E-03 I-131

<6.57E-03 0.00E+00 6.57E-03 Cs-134

<5.79E-03 0.00E+00 5.79E-03 Cs-137

<6.28E-02 0.00E+00 6.28E-02 Be-7 4.11E-01 1.55E-01 1.49E-01 K-40 Sample ID: 402302 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016

<7.33E-03 0.00E+00 7.33E-03 I-131

<8.21E-03 0.00E+00 8.21E-03 Cs-134

<8.63E-03 0.00E+00 8.63E-03 Cs-137 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 33 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 402302 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016

<6.24E-02 0.00E+00 6.24E-02 Be-7

<2.80E-02 0.00E+00 2.80E-02 K-40 Sample ID: 403030 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016

<6.93E-03 0.00E+00 6.93E-03 I-131

<6.11E-03 0.00E+00 6.11E-03 Cs-134

<9.52E-03 0.00E+00 9.52E-03 Cs-137

<4.81E-02 0.00E+00 4.81E-02 Be-7 4.36E-01 1.59E-01 1.51E-01 K-40 Sample ID: 404511 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016

<8.66E-03 0.00E+00 8.66E-03 I-131

<5.85E-03 0.00E+00 5.85E-03 Cs-134

<6.27E-03 0.00E+00 6.27E-03 Cs-137

<6.13E-02 0.00E+00 6.13E-02 Be-7 2.45E-01 1.16E-01 1.03E-01 K-40 Sample ID: 405394 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016

<8.47E-03 0.00E+00 8.47E-03 I-131

<6.38E-03 0.00E+00 6.38E-03 Cs-134

<6.51E-03 0.00E+00 6.51E-03 Cs-137

<4.70E-02 0.00E+00 4.70E-02 Be-7 4.01E-01 1.49E-01 1.36E-01 K-40 Sample ID: 406011 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016

<5.63E-03 0.00E+00 5.63E-03 I-131

<6.90E-03 0.00E+00 6.90E-03 Cs-134

<5.64E-03 0.00E+00 5.64E-03 Cs-137

<5.20E-02 0.00E+00 5.20E-02 Be-7 3.87E-01 1.32E-01 2.83E-02 K-40 Sample ID: 406356 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016

<6.62E-03 0.00E+00 6.62E-03 I-131

<5.77E-03 0.00E+00 5.77E-03 Cs-134

<9.93E-03 0.00E+00 9.93E-03 Cs-137

<4.22E-02 0.00E+00 4.22E-02 Be-7 4.19E-01 1.36E-01 2.77E-02 K-40 Sample ID: 407542 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016

<4.90E-03 0.00E+00 4.90E-03 I-131

<6.05E-03 0.00E+00 6.05E-03 Cs-134

<8.22E-03 0.00E+00 8.22E-03 Cs-137

<5.20E-02 0.00E+00 5.20E-02 Be-7 4.00E-01 1.34E-01 2.85E-02 K-40 Sample ID: 408119 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016

<7.35E-03 0.00E+00 7.35E-03 I-131

<8.01E-03 0.00E+00 8.01E-03 Cs-134

<8.41E-03 0.00E+00 8.41E-03 Cs-137

<5.46E-02 0.00E+00 5.46E-02 Be-7 3.84E-01 1.43E-01 1.26E-01 K-40 Sample ID: 409432 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016

<9.35E-03 0.00E+00 9.35E-03 I-131

<8.24E-03 0.00E+00 8.24E-03 Cs-134

<7.76E-03 0.00E+00 7.76E-03 Cs-137

<3.85E-02 0.00E+00 3.85E-02 Be-7 3.91E-01 1.35E-01 2.95E-02 K-40 Sample ID: 409767 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016

<6.76E-03 0.00E+00 6.76E-03 I-131

<7.52E-03 0.00E+00 7.52E-03 Cs-134

<9.96E-03 0.00E+00 9.96E-03 Cs-137

<5.06E-02 0.00E+00 5.06E-02 Be-7 4.15E-01 1.69E-01 1.83E-01 K-40 Sample ID: 410922 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016

<9.09E-03 0.00E+00 9.09E-03 I-131 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 34 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 410922 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016

<6.80E-03 0.00E+00 6.80E-03 Cs-134

<8.45E-03 0.00E+00 8.45E-03 Cs-137

<6.12E-02 0.00E+00 6.12E-02 Be-7 3.70E-01 1.28E-01 2.79E-02 K-40 Sample ID: 411419 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016

<6.62E-03 0.00E+00 6.62E-03 I-131

<8.72E-03 0.00E+00 8.72E-03 Cs-134

<7.17E-03 0.00E+00 7.17E-03 Cs-137

<5.80E-02 0.00E+00 5.80E-02 Be-7 4.03E-01 1.63E-01 1.82E-01 K-40 Sample ID: 411743 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016

<7.21E-03 0.00E+00 7.21E-03 I-131

<6.53E-03 0.00E+00 6.53E-03 Cs-134

<7.45E-03 0.00E+00 7.45E-03 Cs-137

<5.18E-02 0.00E+00 5.18E-02 Be-7 4.96E-01 1.60E-01 1.23E-01 K-40 Sample ID: 412206 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016

<7.08E-03 0.00E+00 7.08E-03 I-131

<5.26E-03 0.00E+00 5.26E-03 Cs-134

<5.86E-03 0.00E+00 5.86E-03 Cs-137

<4.19E-02 0.00E+00 4.19E-02 Be-7 3.77E-01 1.28E-01 8.87E-02 K-40 Sample ID: 412725 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016

<8.41E-03 0.00E+00 8.41E-03 I-131

<9.71E-03 0.00E+00 9.71E-03 Cs-134

<8.70E-03 0.00E+00 8.70E-03 Cs-137

<5.53E-02 0.00E+00 5.53E-02 Be-7 4.74E-01 1.59E-01 3.38E-02 K-40 Sample ID: 413325 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016

<7.89E-03 0.00E+00 7.89E-03 I-131

<5.85E-03 0.00E+00 5.85E-03 Cs-134

<8.54E-03 0.00E+00 8.54E-03 Cs-137

<3.60E-02 0.00E+00 3.60E-02 Be-7 3.38E-01 1.30E-01 9.83E-02 K-40 Sample ID: 413872 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016

<9.19E-03 0.00E+00 9.19E-03 I-131

<5.87E-03 0.00E+00 5.87E-03 Cs-134

<8.88E-03 0.00E+00 8.88E-03 Cs-137

<6.10E-02 0.00E+00 6.10E-02 Be-7 3.12E-01 1.54E-01 1.85E-01 K-40 Sample ID: 415013 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016

<7.20E-03 0.00E+00 7.20E-03 I-131

<5.78E-03 0.00E+00 5.78E-03 Cs-134

<7.84E-03 0.00E+00 7.84E-03 Cs-137

<4.63E-02 0.00E+00 4.63E-02 Be-7 3.15E-01 1.40E-01 1.53E-01 K-40 Sample ID: 415393 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016

<7.21E-03 0.00E+00 7.21E-03 I-131

<6.80E-03 0.00E+00 6.80E-03 Cs-134

<5.74E-03 0.00E+00 5.74E-03 Cs-137

<4.12E-02 0.00E+00 4.12E-02 Be-7 3.67E-01 1.20E-01 2.48E-02 K-40 Sample ID: 416377 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016

<9.28E-03 0.00E+00 9.28E-03 I-131

<1.13E-02 0.00E+00 1.13E-02 Cs-134

<1.11E-02 0.00E+00 1.11E-02 Cs-137

<5.84E-02 0.00E+00 5.84E-02 Be-7 4.95E-01 1.78E-01 1.61E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 35 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 417001 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016

<7.31E-03 0.00E+00 7.31E-03 I-131

<7.66E-03 0.00E+00 7.66E-03 Cs-134

<1.12E-02 0.00E+00 1.12E-02 Cs-137

<3.19E-02 0.00E+00 3.19E-02 Be-7 4.63E-01 1.63E-01 1.35E-01 K-40 Sample ID: 417395 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016

<6.30E-03 0.00E+00 6.30E-03 I-131

<4.67E-03 0.00E+00 4.67E-03 Cs-134

<1.70E-03 0.00E+00 1.70E-03 Cs-137

<5.19E-02 0.00E+00 5.19E-02 Be-7 4.52E-01 1.43E-01 2.85E-02 K-40 Sample ID: 417789 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016

<1.00E-02 0.00E+00 1.00E-02 I-131

<8.66E-03 0.00E+00 8.66E-03 Cs-134

<5.51E-03 0.00E+00 5.51E-03 Cs-137

<6.34E-02 0.00E+00 6.34E-02 Be-7 4.47E-01 1.41E-01 2.75E-02 K-40 Sample ID: 418250 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016

<8.58E-03 0.00E+00 8.58E-03 I-131

<8.33E-03 0.00E+00 8.33E-03 Cs-134

<5.52E-03 0.00E+00 5.52E-03 Cs-137

<4.10E-02 0.00E+00 4.10E-02 Be-7 2.56E-01 1.15E-01 1.05E-01 K-40 Sample ID: 418979 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016

<8.87E-03 0.00E+00 8.87E-03 I-131

<5.72E-03 0.00E+00 5.72E-03 Cs-134

<7.11E-03 0.00E+00 7.11E-03 Cs-137

<3.93E-02 0.00E+00 3.93E-02 Be-7 5.23E-01 1.59E-01 3.01E-02 K-40 Sample ID: 419480 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016

<3.81E-03 0.00E+00 3.81E-03 I-131

<8.74E-03 0.00E+00 8.74E-03 Cs-134

<8.44E-03 0.00E+00 8.44E-03 Cs-137

<5.41E-02 0.00E+00 5.41E-02 Be-7 2.78E-01 1.20E-01 1.08E-01 K-40 Sample ID: 420010 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016

<6.77E-03 0.00E+00 6.77E-03 I-131

<7.21E-03 0.00E+00 7.21E-03 Cs-134

<7.17E-03 0.00E+00 7.17E-03 Cs-137

<4.60E-02 0.00E+00 4.60E-02 Be-7 5.40E-01 1.66E-01 1.17E-01 K-40 Sample ID: 420561 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016

<6.13E-03 0.00E+00 6.13E-03 I-131

<4.70E-03 0.00E+00 4.70E-03 Cs-134

<5.04E-03 0.00E+00 5.04E-03 Cs-137

<5.54E-02 0.00E+00 5.54E-02 Be-7 2.89E-01 1.25E-01 1.35E-01 K-40 Sample ID: 421398 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016

<1.18E-02 0.00E+00 1.18E-02 I-131

<9.25E-03 0.00E+00 9.25E-03 Cs-134

<8.72E-03 0.00E+00 8.72E-03 Cs-137

<7.32E-02 0.00E+00 7.32E-02 Be-7

<3.33E-01 0.00E+00 3.33E-01 K-40 Sample ID: 422556 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016

<8.80E-03 0.00E+00 8.80E-03 I-131

<7.59E-03 0.00E+00 7.59E-03 Cs-134

<5.84E-03 0.00E+00 5.84E-03 Cs-137

<4.78E-02 0.00E+00 4.78E-02 Be-7 3.14E-01 1.34E-01 1.33E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 36 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 423301 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016

<8.58E-03 0.00E+00 8.58E-03 I-131

<7.63E-03 0.00E+00 7.63E-03 Cs-134

<7.19E-03 0.00E+00 7.19E-03 Cs-137

<5.39E-02 0.00E+00 5.39E-02 Be-7 3.77E-01 1.50E-01 1.53E-01 K-40 Sample ID: 424424 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016

<6.43E-03 0.00E+00 6.43E-03 I-131

<7.99E-03 0.00E+00 7.99E-03 Cs-134

<7.95E-03 0.00E+00 7.95E-03 Cs-137

<5.99E-02 0.00E+00 5.99E-02 Be-7 5.48E-01 1.71E-01 1.13E-01 K-40 Sample ID: 425410 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016

<6.87E-03 0.00E+00 6.87E-03 I-131

<7.78E-03 0.00E+00 7.78E-03 Cs-134

<8.58E-03 0.00E+00 8.58E-03 Cs-137

<5.56E-02 0.00E+00 5.56E-02 Be-7 3.11E-01 1.33E-01 1.31E-01 K-40 Sample ID: 425973 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016

<9.92E-03 0.00E+00 9.92E-03 I-131

<6.78E-03 0.00E+00 6.78E-03 Cs-134

<7.55E-03 0.00E+00 7.55E-03 Cs-137

<5.85E-02 0.00E+00 5.85E-02 Be-7 4.26E-01 1.58E-01 1.28E-01 K-40 Sample ID: 426348 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016

<7.54E-03 0.00E+00 7.54E-03 I-131

<6.57E-03 0.00E+00 6.57E-03 Cs-134

<9.59E-03 0.00E+00 9.59E-03 Cs-137

<5.20E-02 0.00E+00 5.20E-02 Be-7 4.20E-01 1.49E-01 1.02E-01 K-40 Sample ID: 427037 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016

<4.24E-03 0.00E+00 4.24E-03 I-131

<7.67E-03 0.00E+00 7.67E-03 Cs-134

<8.86E-03 0.00E+00 8.86E-03 Cs-137

<6.47E-02 0.00E+00 6.47E-02 Be-7 2.90E-01 1.26E-01 1.08E-01 K-40 Sample ID: 427696 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016

<7.16E-03 0.00E+00 7.16E-03 I-131

<8.26E-03 0.00E+00 8.26E-03 Cs-134

<7.07E-03 0.00E+00 7.07E-03 Cs-137

<6.05E-02 0.00E+00 6.05E-02 Be-7

<3.05E-01 0.00E+00 3.05E-01 K-40 Sample ID: 428191 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016

<1.02E-02 0.00E+00 1.02E-02 I-131

<7.25E-03 0.00E+00 7.25E-03 Cs-134

<1.20E-02 0.00E+00 1.20E-02 Cs-137

<6.28E-02 0.00E+00 6.28E-02 Be-7 4.19E-01 1.81E-01 2.10E-01 K-40 Sample ID: 428876 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016

<7.86E-03 0.00E+00 7.86E-03 I-131

<7.20E-03 0.00E+00 7.20E-03 Cs-134

<8.20E-03 0.00E+00 8.20E-03 Cs-137

<5.73E-02 0.00E+00 5.73E-02 Be-7 4.30E-01 1.64E-01 1.51E-01 K-40 Sample ID: 429383 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016

<9.14E-03 0.00E+00 9.14E-03 I-131

<6.24E-03 0.00E+00 6.24E-03 Cs-134

<7.76E-03 0.00E+00 7.76E-03 Cs-137

<5.34E-02 0.00E+00 5.34E-02 Be-7 5.38E-01 1.54E-01 2.70E-02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 37 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

Sample ID: 429934 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016

<9.23E-03 0.00E+00 9.23E-03 I-131

<8.38E-03 0.00E+00 8.38E-03 Cs-134

<5.55E-03 0.00E+00 5.55E-03 Cs-137

<6.13E-02 0.00E+00 6.13E-02 Be-7 4.22E-01 1.37E-01 2.79E-02 K-40 Sample ID: 430555 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016

<7.41E-03 0.00E+00 7.41E-03 I-131

<5.90E-03 0.00E+00 5.90E-03 Cs-134

<8.01E-03 0.00E+00 8.01E-03 Cs-137

<6.19E-02 0.00E+00 6.19E-02 Be-7 5.14E-01 1.54E-01 2.84E-02 K-40 Sample ID: 431046 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016

<9.18E-03 0.00E+00 9.18E-03 I-131

<7.23E-03 0.00E+00 7.23E-03 Cs-134

<9.49E-03 0.00E+00 9.49E-03 Cs-137

<4.65E-02 0.00E+00 4.65E-02 Be-7 4.71E-01 1.45E-01 2.78E-02 K-40 Sample ID: 431450 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016

<7.22E-03 0.00E+00 7.22E-03 I-131

<4.70E-03 0.00E+00 4.70E-03 Cs-134

<5.05E-03 0.00E+00 5.05E-03 Cs-137

<4.55E-02 0.00E+00 4.55E-02 Be-7 3.05E-01 1.24E-01 1.22E-01 K-40 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 398682 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016

<1.34E-02 0.00E+00 1.34E-02 I-131

<1.52E-02 0.00E+00 1.52E-02 Cs-134

<1.60E-02 0.00E+00 1.60E-02 Cs-137

<8.30E-02 0.00E+00 8.30E-02 Be-7 5.26E-01 1.93E-01 1.24E-01 K-40 Sample ID: 398929 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016

<1.06E-02 0.00E+00 1.06E-02 I-131

<7.47E-03 0.00E+00 7.47E-03 Cs-134

<1.23E-02 0.00E+00 1.23E-02 Cs-137

<5.88E-02 0.00E+00 5.88E-02 Be-7 5.08E-01 1.69E-01 3.53E-02 K-40 Sample ID: 399247 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016

<6.76E-03 0.00E+00 6.76E-03 I-131

<5.90E-03 0.00E+00 5.90E-03 Cs-134

<9.17E-03 0.00E+00 9.17E-03 Cs-137

<5.92E-02 0.00E+00 5.92E-02 Be-7 4.05E-01 1.50E-01 1.36E-01 K-40 Sample ID: 399993 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016

<8.37E-03 0.00E+00 8.37E-03 I-131

<7.49E-03 0.00E+00 7.49E-03 Cs-134

<8.75E-03 0.00E+00 8.75E-03 Cs-137

<7.42E-02 0.00E+00 7.42E-02 Be-7 2.59E-01 1.55E-01 2.13E-01 K-40 Sample ID: 400346 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016

<1.79E-02 0.00E+00 1.79E-02 I-131

<1.33E-02 0.00E+00 1.33E-02 Cs-134

<1.02E-02 0.00E+00 1.02E-02 Cs-137

<9.38E-02 0.00E+00 9.38E-02 Be-7 5.84E-01 2.26E-01 1.91E-01 K-40 Sample ID: 400976 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016

<6.97E-03 0.00E+00 6.97E-03 I-131

<7.13E-03 0.00E+00 7.13E-03 Cs-134

<8.86E-03 0.00E+00 8.86E-03 Cs-137 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 38 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 400976 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016

<5.18E-02 0.00E+00 5.18E-02 Be-7 3.76E-01 1.35E-01 3.09E-02 K-40 Sample ID: 401342 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016

<4.90E-03 0.00E+00 4.90E-03 I-131

<6.04E-03 0.00E+00 6.04E-03 Cs-134

<4.60E-03 0.00E+00 4.60E-03 Cs-137

<5.19E-02 0.00E+00 5.19E-02 Be-7 4.19E-01 1.37E-01 2.84E-02 K-40 Sample ID: 401792 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016

<1.02E-02 0.00E+00 1.02E-02 I-131

<7.24E-03 0.00E+00 7.24E-03 Cs-134

<9.99E-03 0.00E+00 9.99E-03 Cs-137

<6.08E-02 0.00E+00 6.08E-02 Be-7 3.16E-01 1.30E-01 1.21E-01 K-40 Sample ID: 402303 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016

<9.58E-03 0.00E+00 9.58E-03 I-131

<7.36E-03 0.00E+00 7.36E-03 Cs-134

<8.58E-03 0.00E+00 8.58E-03 Cs-137

<4.25E-02 0.00E+00 4.25E-02 Be-7 3.73E-01 1.52E-01 1.60E-01 K-40 Sample ID: 403031 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016

<9.21E-03 0.00E+00 9.21E-03 I-131

<6.56E-03 0.00E+00 6.56E-03 Cs-134

<8.15E-03 0.00E+00 8.15E-03 Cs-137

<5.20E-02 0.00E+00 5.20E-02 Be-7 1.71E-01 1.24E-01 1.72E-01 K-40 Sample ID: 404512 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016

<6.10E-03 0.00E+00 6.10E-03 I-131

<7.09E-03 0.00E+00 7.09E-03 Cs-134

<8.20E-03 0.00E+00 8.20E-03 Cs-137

<5.64E-02 0.00E+00 5.64E-02 Be-7

<2.41E-01 0.00E+00 2.41E-01 K-40 Sample ID: 405395 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016

<8.55E-03 0.00E+00 8.55E-03 I-131

<5.23E-03 0.00E+00 5.23E-03 Cs-134

<9.07E-03 0.00E+00 9.07E-03 Cs-137

<4.70E-02 0.00E+00 4.70E-02 Be-7 3.33E-01 1.45E-01 1.59E-01 K-40 Sample ID: 406012 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016

<1.07E-02 0.00E+00 1.07E-02 I-131

<8.68E-03 0.00E+00 8.68E-03 Cs-134

<8.89E-03 0.00E+00 8.89E-03 Cs-137

<6.65E-02 0.00E+00 6.65E-02 Be-7

<3.64E-01 0.00E+00 3.64E-01 K-40 Sample ID: 406357 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016

<9.44E-03 0.00E+00 9.44E-03 I-131

<8.88E-03 0.00E+00 8.88E-03 Cs-134

<7.29E-03 0.00E+00 7.29E-03 Cs-137

<3.71E-02 0.00E+00 3.71E-02 Be-7 3.76E-01 1.40E-01 1.13E-01 K-40 Sample ID: 407543 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016

<9.27E-03 0.00E+00 9.27E-03 I-131

<4.03E-03 0.00E+00 4.03E-03 Cs-134

<1.13E-02 0.00E+00 1.13E-02 Cs-137

<4.67E-02 0.00E+00 4.67E-02 Be-7 3.84E-01 1.44E-01 1.08E-01 K-40 Sample ID: 408120 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016

<1.16E-02 0.00E+00 1.16E-02 I-131 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 39 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 408120 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016

<6.43E-03 0.00E+00 6.43E-03 Cs-134

<9.38E-03 0.00E+00 9.38E-03 Cs-137

<7.46E-02 0.00E+00 7.46E-02 Be-7 4.59E-01 1.49E-01 3.04E-02 K-40 Sample ID: 409433 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016

<7.30E-03 0.00E+00 7.30E-03 I-131

<9.32E-03 0.00E+00 9.32E-03 Cs-134

<8.39E-03 0.00E+00 8.39E-03 Cs-137

<5.77E-02 0.00E+00 5.77E-02 Be-7 3.10E-01 1.34E-01 1.37E-01 K-40 Sample ID: 409768 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016

<6.39E-03 0.00E+00 6.39E-03 I-131

<7.57E-03 0.00E+00 7.57E-03 Cs-134

<6.76E-03 0.00E+00 6.76E-03 Cs-137

<7.21E-02 0.00E+00 7.21E-02 Be-7 3.68E-01 1.28E-01 2.85E-02 K-40 Sample ID: 410923 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016

<8.74E-03 0.00E+00 8.74E-03 I-131

<5.16E-03 0.00E+00 5.16E-03 Cs-134

<7.14E-03 0.00E+00 7.14E-03 Cs-137

<5.43E-02 0.00E+00 5.43E-02 Be-7 3.26E-01 1.19E-01 2.76E-02 K-40 Sample ID: 411420 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016

<7.94E-03 0.00E+00 7.94E-03 I-131

<5.88E-03 0.00E+00 5.88E-03 Cs-134

<9.14E-03 0.00E+00 9.14E-03 Cs-137

<4.73E-02 0.00E+00 4.73E-02 Be-7 4.29E-01 1.39E-01 2.84E-02 K-40 Sample ID: 411744 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016

<7.25E-03 0.00E+00 7.25E-03 I-131

<8.41E-03 0.00E+00 8.41E-03 Cs-134

<9.52E-03 0.00E+00 9.52E-03 Cs-137

<5.07E-02 0.00E+00 5.07E-02 Be-7 4.94E-01 1.50E-01 2.79E-02 K-40 Sample ID: 412207 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016

<7.07E-03 0.00E+00 7.07E-03 I-131

<6.30E-03 0.00E+00 6.30E-03 Cs-134

<7.35E-03 0.00E+00 7.35E-03 Cs-137

<4.77E-02 0.00E+00 4.77E-02 Be-7 3.85E-01 1.22E-01 2.42E-02 K-40 Sample ID: 412726 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016

<9.59E-03 0.00E+00 9.59E-03 I-131

<8.24E-03 0.00E+00 8.24E-03 Cs-134

<1.03E-02 0.00E+00 1.03E-02 Cs-137

<5.94E-02 0.00E+00 5.94E-02 Be-7 4.06E-01 1.69E-01 1.64E-01 K-40 Sample ID: 413326 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016

<7.80E-03 0.00E+00 7.80E-03 I-131

<6.27E-03 0.00E+00 6.27E-03 Cs-134

<6.40E-03 0.00E+00 6.40E-03 Cs-137

<6.03E-02 0.00E+00 6.03E-02 Be-7 4.08E-01 1.34E-01 2.76E-02 K-40 Sample ID: 413873 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016

<7.52E-03 0.00E+00 7.52E-03 I-131

<7.11E-03 0.00E+00 7.11E-03 Cs-134

<7.54E-03 0.00E+00 7.54E-03 Cs-137

<6.30E-02 0.00E+00 6.30E-02 Be-7 3.61E-01 1.44E-01 1.42E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 40 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 415014 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016

<7.26E-03 0.00E+00 7.26E-03 I-131

<8.00E-03 0.00E+00 8.00E-03 Cs-134

<7.82E-03 0.00E+00 7.82E-03 Cs-137

<5.43E-02 0.00E+00 5.43E-02 Be-7 4.20E-01 1.61E-01 1.69E-01 K-40 Sample ID: 415394 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016

<7.32E-03 0.00E+00 7.32E-03 I-131

<7.02E-03 0.00E+00 7.02E-03 Cs-134

<5.40E-03 0.00E+00 5.40E-03 Cs-137

<4.47E-02 0.00E+00 4.47E-02 Be-7

<2.92E-01 0.00E+00 2.92E-01 K-40 Sample ID: 416378 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016

<9.47E-03 0.00E+00 9.47E-03 I-131

<8.07E-03 0.00E+00 8.07E-03 Cs-134

<9.33E-03 0.00E+00 9.33E-03 Cs-137

<3.34E-02 0.00E+00 3.34E-02 Be-7 4.86E-01 1.74E-01 1.46E-01 K-40 Sample ID: 417002 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016

<7.36E-03 0.00E+00 7.36E-03 I-131

<8.54E-03 0.00E+00 8.54E-03 Cs-134

<6.56E-03 0.00E+00 6.56E-03 Cs-137

<5.16E-02 0.00E+00 5.16E-02 Be-7 4.71E-01 1.47E-01 2.84E-02 K-40 Sample ID: 417396 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016

<8.69E-03 0.00E+00 8.69E-03 I-131

<8.64E-03 0.00E+00 8.64E-03 Cs-134

<4.98E-03 0.00E+00 4.98E-03 Cs-137

<5.66E-02 0.00E+00 5.66E-02 Be-7

<3.32E-01 0.00E+00 3.32E-01 K-40 Sample ID: 417790 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016

<7.50E-03 0.00E+00 7.50E-03 I-131

<6.94E-03 0.00E+00 6.94E-03 Cs-134

<7.34E-03 0.00E+00 7.34E-03 Cs-137

<4.22E-02 0.00E+00 4.22E-02 Be-7 3.79E-01 1.31E-01 2.85E-02 K-40 Sample ID: 418251 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016

<7.38E-03 0.00E+00 7.38E-03 I-131

<7.29E-03 0.00E+00 7.29E-03 Cs-134

<8.51E-03 0.00E+00 8.51E-03 Cs-137

<3.59E-02 0.00E+00 3.59E-02 Be-7 4.36E-01 1.40E-01 2.81E-02 K-40 Sample ID: 418980 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016

<8.68E-03 0.00E+00 8.68E-03 I-131

<8.21E-03 0.00E+00 8.21E-03 Cs-134

<1.18E-02 0.00E+00 1.18E-02 Cs-137

<5.25E-02 0.00E+00 5.25E-02 Be-7 3.78E-01 1.35E-01 3.10E-02 K-40 Sample ID: 419481 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016

<6.92E-03 0.00E+00 6.92E-03 I-131

<6.43E-03 0.00E+00 6.43E-03 Cs-134

<9.67E-03 0.00E+00 9.67E-03 Cs-137

<4.69E-02 0.00E+00 4.69E-02 Be-7 4.19E-01 1.38E-01 2.84E-02 K-40 Sample ID: 420011 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016

<4.92E-03 0.00E+00 4.92E-03 I-131

<6.93E-03 0.00E+00 6.93E-03 Cs-134

<8.62E-03 0.00E+00 8.62E-03 Cs-137

<3.63E-02 0.00E+00 3.63E-02 Be-7 3.67E-01 1.39E-01 1.17E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 41 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 420562 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016

<7.30E-03 0.00E+00 7.30E-03 I-131

<5.02E-03 0.00E+00 5.02E-03 Cs-134

<8.70E-03 0.00E+00 8.70E-03 Cs-137

<5.29E-02 0.00E+00 5.29E-02 Be-7 2.41E-01 1.25E-01 1.50E-01 K-40 Sample ID: 421399 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016

<7.54E-03 0.00E+00 7.54E-03 I-131

<7.31E-03 0.00E+00 7.31E-03 Cs-134

<9.08E-03 0.00E+00 9.08E-03 Cs-137

<6.71E-02 0.00E+00 6.71E-02 Be-7 6.43E-01 2.08E-01 1.91E-01 K-40 Sample ID: 422557 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016

<7.82E-03 0.00E+00 7.82E-03 I-131

<6.79E-03 0.00E+00 6.79E-03 Cs-134

<8.98E-03 0.00E+00 8.98E-03 Cs-137

<4.65E-02 0.00E+00 4.65E-02 Be-7 4.83E-01 1.63E-01 1.42E-01 K-40 Sample ID: 423302 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016

<7.77E-03 0.00E+00 7.77E-03 I-131

<8.34E-03 0.00E+00 8.34E-03 Cs-134

<6.41E-03 0.00E+00 6.41E-03 Cs-137

<4.99E-02 0.00E+00 4.99E-02 Be-7 4.60E-01 1.43E-01 2.77E-02 K-40 Sample ID: 424425 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016

<9.30E-03 0.00E+00 9.30E-03 I-131

<9.09E-03 0.00E+00 9.09E-03 Cs-134

<6.71E-03 0.00E+00 6.71E-03 Cs-137

<5.98E-02 0.00E+00 5.98E-02 Be-7 3.10E-01 1.42E-01 1.62E-01 K-40 Sample ID: 425411 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016

<9.64E-03 0.00E+00 9.64E-03 I-131

<8.92E-03 0.00E+00 8.92E-03 Cs-134

<7.34E-03 0.00E+00 7.34E-03 Cs-137

<5.20E-02 0.00E+00 5.20E-02 Be-7 3.57E-01 1.27E-01 2.85E-02 K-40 Sample ID: 425974 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016

<8.39E-03 0.00E+00 8.39E-03 I-131

<9.09E-03 0.00E+00 9.09E-03 Cs-134

<8.18E-03 0.00E+00 8.18E-03 Cs-137

<4.25E-02 0.00E+00 4.25E-02 Be-7 2.64E-01 1.17E-01 1.06E-01 K-40 Sample ID: 426349 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016

<6.33E-03 0.00E+00 6.33E-03 I-131

<6.45E-03 0.00E+00 6.45E-03 Cs-134

<8.01E-03 0.00E+00 8.01E-03 Cs-137

<4.70E-02 0.00E+00 4.70E-02 Be-7 4.62E-01 1.45E-01 2.85E-02 K-40 Sample ID: 427038 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016

<9.08E-03 0.00E+00 9.08E-03 I-131

<7.59E-03 0.00E+00 7.59E-03 Cs-134

<8.92E-03 0.00E+00 8.92E-03 Cs-137

<5.73E-02 0.00E+00 5.73E-02 Be-7 3.76E-01 1.28E-01 2.76E-02 K-40 Sample ID: 427697 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016

<8.43E-03 0.00E+00 8.43E-03 I-131

<8.47E-03 0.00E+00 8.47E-03 Cs-134

<7.92E-03 0.00E+00 7.92E-03 Cs-137

<4.69E-02 0.00E+00 4.69E-02 Be-7 3.65E-01 1.37E-01 1.10E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 42 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 428192 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016

<6.30E-03 0.00E+00 6.30E-03 I-131

<7.13E-03 0.00E+00 7.13E-03 Cs-134

<8.23E-03 0.00E+00 8.23E-03 Cs-137

<3.77E-02 0.00E+00 3.77E-02 Be-7 4.97E-01 1.53E-01 2.93E-02 K-40 Sample ID: 428877 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016

<7.92E-03 0.00E+00 7.92E-03 I-131

<8.23E-03 0.00E+00 8.23E-03 Cs-134

<1.08E-02 0.00E+00 1.08E-02 Cs-137

<7.28E-02 0.00E+00 7.28E-02 Be-7 3.90E-01 1.48E-01 1.13E-01 K-40 Sample ID: 429384 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016

<6.94E-03 0.00E+00 6.94E-03 I-131

<5.24E-03 0.00E+00 5.24E-03 Cs-134

<6.52E-03 0.00E+00 6.52E-03 Cs-137

<4.93E-02 0.00E+00 4.93E-02 Be-7 4.21E-01 1.38E-01 9.70E-02 K-40 Sample ID: 429935 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016

<7.42E-03 0.00E+00 7.42E-03 I-131

<5.26E-03 0.00E+00 5.26E-03 Cs-134

<5.63E-03 0.00E+00 5.63E-03 Cs-137

<5.54E-02 0.00E+00 5.54E-02 Be-7 3.34E-01 1.22E-01 2.83E-02 K-40 Sample ID: 430556 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016

<8.71E-03 0.00E+00 8.71E-03 I-131

<7.62E-03 0.00E+00 7.62E-03 Cs-134

<8.41E-03 0.00E+00 8.41E-03 Cs-137

<4.13E-02 0.00E+00 4.13E-02 Be-7 4.40E-01 1.40E-01 2.77E-02 K-40 Sample ID: 431047 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016

<8.80E-03 0.00E+00 8.80E-03 I-131

<7.67E-03 0.00E+00 7.67E-03 Cs-134

<1.00E-02 0.00E+00 1.00E-02 Cs-137

<4.66E-02 0.00E+00 4.66E-02 Be-7 4.33E-01 1.39E-01 2.80E-02 K-40 Sample ID: 431451 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016

<8.88E-03 0.00E+00 8.88E-03 I-131

<5.13E-03 0.00E+00 5.13E-03 Cs-134

<5.50E-03 0.00E+00 5.50E-03 Cs-137

<5.37E-02 0.00E+00 5.37E-02 Be-7

<2.78E-01 0.00E+00 2.78E-01 K-40 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 398683 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/29/2015 - 1/6/2016

<1.49E-02 0.00E+00 1.49E-02 I-131

<9.30E-03 0.00E+00 9.30E-03 Cs-134

<1.35E-02 0.00E+00 1.35E-02 Cs-137

<8.25E-02 0.00E+00 8.25E-02 Be-7 5.30E-01 2.59E-01 3.38E-01 K-40 Sample ID: 398930 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/12/2016

<1.03E-02 0.00E+00 1.03E-02 I-131

<8.79E-03 0.00E+00 8.79E-03 Cs-134

<8.75E-03 0.00E+00 8.75E-03 Cs-137

<6.90E-02 0.00E+00 6.90E-02 Be-7

<1.48E-01 0.00E+00 1.48E-01 K-40 Sample ID: 399248 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016

<7.76E-03 0.00E+00 7.76E-03 I-131

<6.95E-03 0.00E+00 6.95E-03 Cs-134

<8.64E-03 0.00E+00 8.64E-03 Cs-137 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 43 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 399248 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/19/2016

<5.96E-02 0.00E+00 5.96E-02 Be-7 3.31E-01 1.58E-01 1.89E-01 K-40 Sample ID: 399994 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/19/2016 - 1/26/2016

<6.38E-03 0.00E+00 6.38E-03 I-131

<8.63E-03 0.00E+00 8.63E-03 Cs-134

<6.63E-03 0.00E+00 6.63E-03 Cs-137

<4.73E-02 0.00E+00 4.73E-02 Be-7 4.65E-01 1.56E-01 1.17E-01 K-40 Sample ID: 400347 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 2/2/2016

<1.91E-02 0.00E+00 1.91E-02 I-131

<1.60E-02 0.00E+00 1.60E-02 Cs-134

<1.53E-02 0.00E+00 1.53E-02 Cs-137

<1.07E-01 0.00E+00 1.07E-01 Be-7 6.55E-01 2.64E-01 2.85E-01 K-40 Sample ID: 400977 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/9/2016

<7.43E-03 0.00E+00 7.43E-03 I-131

<4.68E-03 0.00E+00 4.68E-03 Cs-134

<7.53E-03 0.00E+00 7.53E-03 Cs-137

<4.27E-02 0.00E+00 4.27E-02 Be-7 3.27E-01 1.31E-01 1.11E-01 K-40 Sample ID: 401343 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/16/2016

<8.16E-03 0.00E+00 8.16E-03 I-131

<9.10E-03 0.00E+00 9.10E-03 Cs-134

<8.89E-03 0.00E+00 8.89E-03 Cs-137

<4.66E-02 0.00E+00 4.66E-02 Be-7 4.23E-01 1.44E-01 3.10E-02 K-40 Sample ID: 401793 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/16/2016 - 2/23/2016

<7.49E-03 0.00E+00 7.49E-03 I-131

<7.38E-03 0.00E+00 7.38E-03 Cs-134

<8.01E-03 0.00E+00 8.01E-03 Cs-137

<4.21E-02 0.00E+00 4.21E-02 Be-7 3.28E-01 1.30E-01 1.07E-01 K-40 Sample ID: 402304 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 3/1/2016

<9.65E-03 0.00E+00 9.65E-03 I-131

<3.91E-03 0.00E+00 3.91E-03 Cs-134

<1.05E-02 0.00E+00 1.05E-02 Cs-137

<6.38E-02 0.00E+00 6.38E-02 Be-7 4.28E-01 1.50E-01 1.04E-01 K-40 Sample ID: 403032 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/8/2016

<9.91E-03 0.00E+00 9.91E-03 I-131

<7.60E-03 0.00E+00 7.60E-03 Cs-134

<8.79E-03 0.00E+00 8.79E-03 Cs-137

<3.96E-02 0.00E+00 3.96E-02 Be-7 3.64E-01 1.62E-01 1.84E-01 K-40 Sample ID: 404513 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/15/2016

<7.92E-03 0.00E+00 7.92E-03 I-131

<8.49E-03 0.00E+00 8.49E-03 Cs-134

<5.63E-03 0.00E+00 5.63E-03 Cs-137

<5.52E-02 0.00E+00 5.52E-02 Be-7 3.65E-01 1.28E-01 2.83E-02 K-40 Sample ID: 405396 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/15/2016 - 3/22/2016

<6.77E-03 0.00E+00 6.77E-03 I-131

<6.33E-03 0.00E+00 6.33E-03 Cs-134

<8.46E-03 0.00E+00 8.46E-03 Cs-137

<5.48E-02 0.00E+00 5.48E-02 Be-7 4.86E-01 1.48E-01 2.80E-02 K-40 Sample ID: 406013 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016

<8.03E-03 0.00E+00 8.03E-03 I-131 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 44 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 406013 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/29/2016

<6.61E-03 0.00E+00 6.61E-03 Cs-134

<5.82E-03 0.00E+00 5.82E-03 Cs-137

<7.06E-02 0.00E+00 7.06E-02 Be-7 3.92E-01 1.40E-01 1.05E-01 K-40 Sample ID: 406358 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/5/2016

<1.20E-02 0.00E+00 1.20E-02 I-131

<7.16E-03 0.00E+00 7.16E-03 Cs-134

<8.14E-03 0.00E+00 8.14E-03 Cs-137

<4.12E-02 0.00E+00 4.12E-02 Be-7 4.45E-01 1.59E-01 1.28E-01 K-40 Sample ID: 407544 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/12/2016

<7.34E-03 0.00E+00 7.34E-03 I-131

<7.39E-03 0.00E+00 7.39E-03 Cs-134

<7.34E-03 0.00E+00 7.34E-03 Cs-137

<5.17E-02 0.00E+00 5.17E-02 Be-7 3.89E-01 1.33E-01 2.85E-02 K-40 Sample ID: 408121 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/12/2016 - 4/19/2016

<6.76E-03 0.00E+00 6.76E-03 I-131

<8.69E-03 0.00E+00 8.69E-03 Cs-134

<8.92E-03 0.00E+00 8.92E-03 Cs-137

<6.19E-02 0.00E+00 6.19E-02 Be-7 4.35E-01 1.60E-01 1.41E-01 K-40 Sample ID: 409434 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/26/2016

<9.74E-03 0.00E+00 9.74E-03 I-131

<7.57E-03 0.00E+00 7.57E-03 Cs-134

<1.21E-02 0.00E+00 1.21E-02 Cs-137

<6.81E-02 0.00E+00 6.81E-02 Be-7 4.17E-01 1.51E-01 1.18E-01 K-40 Sample ID: 409769 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/3/2016

<7.04E-03 0.00E+00 7.04E-03 I-131

<7.20E-03 0.00E+00 7.20E-03 Cs-134

<1.14E-02 0.00E+00 1.14E-02 Cs-137

<5.71E-02 0.00E+00 5.71E-02 Be-7 3.11E-01 1.22E-01 3.12E-02 K-40 Sample ID: 410924 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/10/2016

<8.43E-03 0.00E+00 8.43E-03 I-131

<6.43E-03 0.00E+00 6.43E-03 Cs-134

<9.38E-03 0.00E+00 9.38E-03 Cs-137

<5.12E-02 0.00E+00 5.12E-02 Be-7 5.51E-01 1.72E-01 1.12E-01 K-40 Sample ID: 411421 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/10/2016 - 5/17/2016

<8.50E-03 0.00E+00 8.50E-03 I-131

<8.50E-03 0.00E+00 8.50E-03 Cs-134

<1.00E-02 0.00E+00 1.00E-02 Cs-137

<6.78E-02 0.00E+00 6.78E-02 Be-7 3.59E-01 1.31E-01 3.04E-02 K-40 Sample ID: 411745 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/24/2016

<7.19E-03 0.00E+00 7.19E-03 I-131

<1.05E-02 0.00E+00 1.05E-02 Cs-134

<9.89E-03 0.00E+00 9.89E-03 Cs-137

<4.62E-02 0.00E+00 4.62E-02 Be-7 4.07E-01 1.34E-01 2.75E-02 K-40 Sample ID: 412208 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/1/2016

<8.29E-03 0.00E+00 8.29E-03 I-131

<5.47E-03 0.00E+00 5.47E-03 Cs-134

<6.79E-03 0.00E+00 6.79E-03 Cs-137

<3.13E-02 0.00E+00 3.13E-02 Be-7 3.09E-01 1.18E-01 1.00E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 45 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 412727 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/7/2016

<8.94E-03 0.00E+00 8.94E-03 I-131

<6.40E-03 0.00E+00 6.40E-03 Cs-134

<1.05E-02 0.00E+00 1.05E-02 Cs-137

<6.56E-02 0.00E+00 6.56E-02 Be-7 2.58E-01 1.23E-01 1.04E-01 K-40 Sample ID: 413327 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/7/2016 - 6/14/2016

<7.80E-03 0.00E+00 7.80E-03 I-131

<5.72E-03 0.00E+00 5.72E-03 Cs-134

<9.39E-03 0.00E+00 9.39E-03 Cs-137

<4.98E-02 0.00E+00 4.98E-02 Be-7 4.49E-01 1.48E-01 1.01E-01 K-40 Sample ID: 413874 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/21/2016

<7.34E-03 0.00E+00 7.34E-03 I-131

<7.23E-03 0.00E+00 7.23E-03 Cs-134

<8.45E-03 0.00E+00 8.45E-03 Cs-137

<7.46E-02 0.00E+00 7.46E-02 Be-7 3.49E-01 1.60E-01 1.94E-01 K-40 Sample ID: 415015 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 6/28/2016

<5.94E-03 0.00E+00 5.94E-03 I-131

<7.61E-03 0.00E+00 7.61E-03 Cs-134

<5.54E-03 0.00E+00 5.54E-03 Cs-137

<5.04E-02 0.00E+00 5.04E-02 Be-7 3.89E-01 1.31E-01 2.77E-02 K-40 Sample ID: 415395 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 7/6/2016

<5.17E-03 0.00E+00 5.17E-03 I-131

<4.73E-03 0.00E+00 4.73E-03 Cs-134

<5.08E-03 0.00E+00 5.08E-03 Cs-137

<5.23E-02 0.00E+00 5.23E-02 Be-7

<2.81E-01 0.00E+00 2.81E-01 K-40 Sample ID: 416379 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/12/2016

<8.39E-03 0.00E+00 8.39E-03 I-131

<6.33E-03 0.00E+00 6.33E-03 Cs-134

<1.03E-02 0.00E+00 1.03E-02 Cs-137

<7.31E-02 0.00E+00 7.31E-02 Be-7 4.26E-01 1.75E-01 1.83E-01 K-40 Sample ID: 417003 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/19/2016

<1.08E-02 0.00E+00 1.08E-02 I-131

<6.99E-03 0.00E+00 6.99E-03 Cs-134

<7.96E-03 0.00E+00 7.96E-03 Cs-137

<5.11E-02 0.00E+00 5.11E-02 Be-7 5.47E-01 1.72E-01 1.19E-01 K-40 Sample ID: 417397 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 7/26/2016

<8.62E-03 0.00E+00 8.62E-03 I-131

<6.31E-03 0.00E+00 6.31E-03 Cs-134

<7.19E-03 0.00E+00 7.19E-03 Cs-137

<6.07E-02 0.00E+00 6.07E-02 Be-7 4.23E-01 1.45E-01 1.04E-01 K-40 Sample ID: 417791 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 8/2/2016

<9.41E-03 0.00E+00 9.41E-03 I-131

<8.02E-03 0.00E+00 8.02E-03 Cs-134

<7.97E-03 0.00E+00 7.97E-03 Cs-137

<5.07E-02 0.00E+00 5.07E-02 Be-7 4.47E-01 1.47E-01 3.03E-02 K-40 Sample ID: 418252 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/9/2016

<7.91E-03 0.00E+00 7.91E-03 I-131

<3.92E-03 0.00E+00 3.92E-03 Cs-134

<8.68E-03 0.00E+00 8.68E-03 Cs-137

<4.53E-02 0.00E+00 4.53E-02 Be-7 3.32E-01 1.39E-01 1.31E-01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 46 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 418981 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/16/2016

<8.33E-03 0.00E+00 8.33E-03 I-131

<7.53E-03 0.00E+00 7.53E-03 Cs-134

<7.49E-03 0.00E+00 7.49E-03 Cs-137

<5.22E-02 0.00E+00 5.22E-02 Be-7 3.90E-01 1.49E-01 1.41E-01 K-40 Sample ID: 419482 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 8/23/2016

<5.67E-03 0.00E+00 5.67E-03 I-131

<8.38E-03 0.00E+00 8.38E-03 Cs-134

<8.83E-03 0.00E+00 8.83E-03 Cs-137

<4.76E-02 0.00E+00 4.76E-02 Be-7 3.15E-01 1.18E-01 2.85E-02 K-40 Sample ID: 420012 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/30/2016

<6.23E-03 0.00E+00 6.23E-03 I-131

<7.17E-03 0.00E+00 7.17E-03 Cs-134

<1.02E-02 0.00E+00 1.02E-02 Cs-137

<5.20E-02 0.00E+00 5.20E-02 Be-7 4.70E-01 1.52E-01 3.11E-02 K-40 Sample ID: 420563 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/30/2016 - 9/7/2016

<7.98E-03 0.00E+00 7.98E-03 I-131

<6.71E-03 0.00E+00 6.71E-03 Cs-134

<7.09E-03 0.00E+00 7.09E-03 Cs-137

<2.82E-02 0.00E+00 2.82E-02 Be-7 3.49E-01 1.21E-01 2.70E-02 K-40 Sample ID: 421400 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/13/2016

<8.96E-03 0.00E+00 8.96E-03 I-131

<6.85E-03 0.00E+00 6.85E-03 Cs-134

<7.63E-03 0.00E+00 7.63E-03 Cs-137

<4.24E-02 0.00E+00 4.24E-02 Be-7 4.75E-01 1.58E-01 3.30E-02 K-40 Sample ID: 422558 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 9/20/2016

<7.35E-03 0.00E+00 7.35E-03 I-131

<7.23E-03 0.00E+00 7.23E-03 Cs-134

<8.99E-03 0.00E+00 8.99E-03 Cs-137

<4.13E-02 0.00E+00 4.13E-02 Be-7 4.72E-01 1.54E-01 1.10E-01 K-40 Sample ID: 423303 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/27/2016

<8.79E-03 0.00E+00 8.79E-03 I-131

<9.54E-03 0.00E+00 9.54E-03 Cs-134

<7.98E-03 0.00E+00 7.98E-03 Cs-137

<2.87E-02 0.00E+00 2.87E-02 Be-7 3.71E-01 1.46E-01 1.40E-01 K-40 Sample ID: 424426 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/27/2016 - 10/4/2016

<9.63E-03 0.00E+00 9.63E-03 I-131

<7.92E-03 0.00E+00 7.92E-03 Cs-134

<4.57E-03 0.00E+00 4.57E-03 Cs-137

<6.29E-02 0.00E+00 6.29E-02 Be-7 3.52E-01 1.48E-01 1.60E-01 K-40 Sample ID: 425412 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/11/2016

<9.12E-03 0.00E+00 9.12E-03 I-131

<6.94E-03 0.00E+00 6.94E-03 Cs-134

<6.58E-03 0.00E+00 6.58E-03 Cs-137

<4.26E-02 0.00E+00 4.26E-02 Be-7 3.99E-01 1.34E-01 2.85E-02 K-40 Sample ID: 425975 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 10/18/2016

<8.80E-03 0.00E+00 8.80E-03 I-131

<4.56E-03 0.00E+00 4.56E-03 Cs-134

<6.57E-03 0.00E+00 6.57E-03 Cs-137

<4.69E-02 0.00E+00 4.69E-02 Be-7 4.20E-01 1.38E-01 2.84E-02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 47 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: AIR RADIOIODINE Concentration (Activity): pCi/m3 Sample Point 261 [ INDICATOR - N @ 0.72 miles ]

Sample ID: 426350 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/25/2016

<6.28E-03 0.00E+00 6.28E-03 I-131

<6.59E-03 0.00E+00 6.59E-03 Cs-134

<7.52E-03 0.00E+00 7.52E-03 Cs-137

<5.19E-02 0.00E+00 5.19E-02 Be-7 2.98E-01 1.37E-01 1.51E-01 K-40 Sample ID: 427039 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/25/2016 - 11/1/2016

<5.37E-03 0.00E+00 5.37E-03 I-131

<7.67E-03 0.00E+00 7.67E-03 Cs-134

<9.54E-03 0.00E+00 9.54E-03 Cs-137

<5.18E-02 0.00E+00 5.18E-02 Be-7 4.09E-01 1.53E-01 1.30E-01 K-40 Sample ID: 427698 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/8/2016

<1.11E-02 0.00E+00 1.11E-02 I-131

<7.64E-03 0.00E+00 7.64E-03 Cs-134

<4.95E-03 0.00E+00 4.95E-03 Cs-137

<5.20E-02 0.00E+00 5.20E-02 Be-7 5.39E-01 1.69E-01 1.05E-01 K-40 Sample ID: 428193 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 11/15/2016

<1.42E-02 0.00E+00 1.42E-02 I-131

<1.14E-02 0.00E+00 1.14E-02 Cs-134

<1.34E-02 0.00E+00 1.34E-02 Cs-137

<9.57E-02 0.00E+00 9.57E-02 Be-7 3.98E-01 1.99E-01 2.38E-01 K-40 Sample ID: 428878 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/21/2016

<1.14E-02 0.00E+00 1.14E-02 I-131

<1.15E-02 0.00E+00 1.15E-02 Cs-134

<1.26E-02 0.00E+00 1.26E-02 Cs-137

<5.81E-02 0.00E+00 5.81E-02 Be-7 4.29E-01 1.70E-01 1.56E-01 K-40 Sample ID: 429385 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/21/2016 - 11/29/2016

<1.06E-02 0.00E+00 1.06E-02 I-131

<7.15E-03 0.00E+00 7.15E-03 Cs-134

<9.39E-03 0.00E+00 9.39E-03 Cs-137

<4.55E-02 0.00E+00 4.55E-02 Be-7 3.69E-01 1.26E-01 2.70E-02 K-40 Sample ID: 429936 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 12/6/2016

<8.67E-03 0.00E+00 8.67E-03 I-131

<7.07E-03 0.00E+00 7.07E-03 Cs-134

<1.81E-03 0.00E+00 1.81E-03 Cs-137

<4.01E-02 0.00E+00 4.01E-02 Be-7 3.47E-01 1.46E-01 1.44E-01 K-40 Sample ID: 430557 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/13/2016

<7.52E-03 0.00E+00 7.52E-03 I-131

<6.50E-03 0.00E+00 6.50E-03 Cs-134

<6.63E-03 0.00E+00 6.63E-03 Cs-137

<4.25E-02 0.00E+00 4.25E-02 Be-7 4.14E-01 1.38E-01 2.87E-02 K-40 Sample ID: 431048 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/20/2016

<6.66E-03 0.00E+00 6.66E-03 I-131

<7.74E-03 0.00E+00 7.74E-03 Cs-134

<9.61E-03 0.00E+00 9.61E-03 Cs-137

<6.59E-02 0.00E+00 6.59E-02 Be-7 4.48E-01 1.48E-01 3.12E-02 K-40 Sample ID: 431452 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/20/2016 - 12/28/2016

<7.13E-03 0.00E+00 7.13E-03 I-131

<5.93E-03 0.00E+00 5.93E-03 Cs-134

<8.29E-03 0.00E+00 8.29E-03 Cs-137

<4.04E-02 0.00E+00 4.04E-02 Be-7 3.44E-01 1.22E-01 8.85E-02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 48 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: CROPS Concentration (Activity): pCi/kg Sample Point 260 [ INDICATOR - SSE @ 2 miles ]

Sample ID: 406160 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/5/2016

<4.32E+01 0.00E+00 4.32E+01 I-131

<6.22E+00 0.00E+00 6.22E+00 Cs-134

<5.97E+00 0.00E+00 5.97E+00 Cs-137 2.05E+02 8.55E+01 1.33E+02 Be-7 4.16E+03 3.80E+02 8.83E+01 K-40 Sample ID: 409607 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/3/2016 MIXEDCROPS

<8.34E+00 0.00E+00 8.34E+00 I-131

<1.46E+01 0.00E+00 1.46E+01 Cs-134

<1.53E+01 0.00E+00 1.53E+01 Cs-137 6.65E+02 1.36E+02 1.27E+02 Be-7 2.79E+03 3.96E+02 1.53E+02 K-40 Sample ID: 412059 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/1/2016 MIXEDCROPS

<6.65E+00 0.00E+00 6.65E+00 I-131

<7.25E+00 0.00E+00 7.25E+00 Cs-134

<9.10E+00 0.00E+00 9.10E+00 Cs-137

<1.15E+02 0.00E+00 1.15E+02 Be-7 2.45E+03 3.51E+02 1.56E+02 K-40 Sample ID: 414473 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/6/2016 MIXEDCROPS

<8.99E+00 0.00E+00 8.99E+00 I-131

<8.62E+00 0.00E+00 8.62E+00 Cs-134

<1.04E+01 0.00E+00 1.04E+01 Cs-137

<6.92E+01 0.00E+00 6.92E+01 Be-7 2.28E+03 3.33E+02 2.03E+02 K-40 Sample ID: 417259 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/2/2016 MIXEDCROPS

<5.94E+00 0.00E+00 5.94E+00 I-131

<9.28E+00 0.00E+00 9.28E+00 Cs-134

<8.09E+00 0.00E+00 8.09E+00 Cs-137

<6.82E+01 0.00E+00 6.82E+01 Be-7 1.97E+03 2.85E+02 1.62E+02 K-40 Sample ID: 419437 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/7/2016 MIXEDCROPS

<1.65E+01 0.00E+00 1.65E+01 I-131

<1.31E+01 0.00E+00 1.31E+01 Cs-134

<1.90E+01 0.00E+00 1.90E+01 Cs-137 1.34E+02 9.99E+01 1.53E+02 Be-7 3.58E+03 5.16E+02 2.52E+02 K-40 Sample ID: 422559 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/4/2016 MIXEDCROPS

<8.59E+00 0.00E+00 8.59E+00 I-131

<8.31E+00 0.00E+00 8.31E+00 Cs-134

<1.03E+01 0.00E+00 1.03E+01 Cs-137

<6.29E+01 0.00E+00 6.29E+01 Be-7 2.40E+03 3.33E+02 2.04E+01 K-40 Sample ID: 426073 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/1/2016 MIXEDCROPS

<8.32E+00 0.00E+00 8.32E+00 I-131

<1.30E+01 0.00E+00 1.30E+01 Cs-134

<1.04E+01 0.00E+00 1.04E+01 Cs-137

<7.13E+01 0.00E+00 7.13E+01 Be-7 2.50E+03 3.54E+02 1.30E+02 K-40 Sample ID: 428528 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/6/2016 MIXEDCROPS

<7.39E+00 0.00E+00 7.39E+00 I-131

<8.51E+00 0.00E+00 8.51E+00 Cs-134

<8.53E+00 0.00E+00 8.53E+00 Cs-137

<7.07E+01 0.00E+00 7.07E+01 Be-7 2.21E+03 3.08E+02 1.49E+02 K-40 Media Type: DRINKING WATER Concentration (Activity): pCi/l Sample Point 214 [ INDICATOR - SSE @ 7.3 miles ]

Sample ID: 398472 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 1/6/2016 7.10E-01 8.31E-01 1.40E+00 Beta

<3.72E+00 0.00E+00 3.72E+00 Mn-54 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 49 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: DRINKING WATER Concentration (Activity): pCi/l Sample Point 214 [ INDICATOR - SSE @ 7.3 miles ]

Sample ID: 398472 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 1/6/2016

<5.16E+00 0.00E+00 5.16E+00 Co-58

<7.82E+00 0.00E+00 7.82E+00 Fe-59

<3.98E+00 0.00E+00 3.98E+00 Co-60

<6.57E+00 0.00E+00 6.57E+00 Zn-65

<8.81E+00 0.00E+00 8.81E+00 Zr-95

<5.77E+00 0.00E+00 5.77E+00 Nb-95

<1.16E+01 0.00E+00 1.16E+01 I-131

<3.88E+00 0.00E+00 3.88E+00 Cs-134

<4.00E+00 0.00E+00 4.00E+00 Cs-137

<9.62E+00 0.00E+00 9.62E+00 BaLa-140

<2.30E+01 0.00E+00 2.30E+01 Be-7

<8.37E+01 0.00E+00 8.37E+01 K-40 Sample ID: 400154 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 2/2/2016 1.64E+00 7.96E-01 1.26E+00 Beta

<3.43E+00 0.00E+00 3.43E+00 Mn-54

<3.11E+00 0.00E+00 3.11E+00 Co-58

<6.05E+00 0.00E+00 6.05E+00 Fe-59

<3.13E+00 0.00E+00 3.13E+00 Co-60

<7.52E+00 0.00E+00 7.52E+00 Zn-65

<7.01E+00 0.00E+00 7.01E+00 Zr-95

<3.45E+00 0.00E+00 3.45E+00 Nb-95

<1.20E+01 0.00E+00 1.20E+01 I-131

<3.81E+00 0.00E+00 3.81E+00 Cs-134

<4.22E+00 0.00E+00 4.22E+00 Cs-137

<9.81E+00 0.00E+00 9.81E+00 BaLa-140

<2.90E+01 0.00E+00 2.90E+01 Be-7 3.83E+01 3.60E+01 5.57E+01 K-40 Sample ID: 401959 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 3/1/2016 2.07E+00 8.12E-01 1.25E+00 Beta

<4.12E+00 0.00E+00 4.12E+00 Mn-54

<4.33E+00 0.00E+00 4.33E+00 Co-58

<8.47E+00 0.00E+00 8.47E+00 Fe-59

<4.34E+00 0.00E+00 4.34E+00 Co-60

<7.32E+00 0.00E+00 7.32E+00 Zn-65

<7.66E+00 0.00E+00 7.66E+00 Zr-95

<4.81E+00 0.00E+00 4.81E+00 Nb-95

<1.15E+01 0.00E+00 1.15E+01 I-131

<4.36E+00 0.00E+00 4.36E+00 Cs-134

<4.00E+00 0.00E+00 4.00E+00 Cs-137

<6.39E+00 0.00E+00 6.39E+00 BaLa-140

<3.71E+01 0.00E+00 3.71E+01 Be-7 2.34E+01 3.40E+01 5.68E+01 K-40 Sample ID: 403599 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 3/1/2016 3.92E+02 1.28E+02 1.99E+02 H3DW Sample ID: 405631 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/29/2016 8.99E-01 8.11E-01 1.35E+00 Beta

<1.45E+00 0.00E+00 1.45E+00 Mn-54

<1.80E+00 0.00E+00 1.80E+00 Co-58

<4.25E+00 0.00E+00 4.25E+00 Fe-59

<1.78E+00 0.00E+00 1.78E+00 Co-60

<4.12E+00 0.00E+00 4.12E+00 Zn-65

<4.15E+00 0.00E+00 4.15E+00 Zr-95

<2.87E+00 0.00E+00 2.87E+00 Nb-95

<1.03E+01 0.00E+00 1.03E+01 I-131

<1.73E+00 0.00E+00 1.73E+00 Cs-134

<2.06E+00 0.00E+00 2.06E+00 Cs-137

<7.05E+00 0.00E+00 7.05E+00 BaLa-140

<1.70E+01 0.00E+00 1.70E+01 Be-7 4.70E+01 2.96E+01 4.60E+01 K-40 Sample ID: 408515 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/26/2016 1.30E+00 8.49E-01 1.38E+00 Beta

<3.00E+00 0.00E+00 3.00E+00 Mn-54 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 50 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: DRINKING WATER Concentration (Activity): pCi/l Sample Point 214 [ INDICATOR - SSE @ 7.3 miles ]

Sample ID: 408515 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/26/2016

<3.57E+00 0.00E+00 3.57E+00 Co-58

<6.57E+00 0.00E+00 6.57E+00 Fe-59

<3.33E+00 0.00E+00 3.33E+00 Co-60

<6.12E+00 0.00E+00 6.12E+00 Zn-65

<5.90E+00 0.00E+00 5.90E+00 Zr-95

<4.01E+00 0.00E+00 4.01E+00 Nb-95

<1.19E+01 0.00E+00 1.19E+01 I-131

<2.75E+00 0.00E+00 2.75E+00 Cs-134

<3.21E+00 0.00E+00 3.21E+00 Cs-137

<9.28E+00 0.00E+00 9.28E+00 BaLa-140

<3.34E+01 0.00E+00 3.34E+01 Be-7 3.70E+01 3.00E+01 4.51E+01 K-40 Sample ID: 411588 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/24/2016 2.70E+00 8.71E-01 1.31E+00 Beta

<3.36E+00 0.00E+00 3.36E+00 Mn-54

<2.39E+00 0.00E+00 2.39E+00 Co-58

<8.78E+00 0.00E+00 8.78E+00 Fe-59

<3.81E+00 0.00E+00 3.81E+00 Co-60

<7.00E+00 0.00E+00 7.00E+00 Zn-65

<7.67E+00 0.00E+00 7.67E+00 Zr-95

<4.31E+00 0.00E+00 4.31E+00 Nb-95

<1.18E+01 0.00E+00 1.18E+01 I-131

<3.55E+00 0.00E+00 3.55E+00 Cs-134

<4.17E+00 0.00E+00 4.17E+00 Cs-137

<9.36E+00 0.00E+00 9.36E+00 BaLa-140

<2.83E+01 0.00E+00 2.83E+01 Be-7

<5.56E+01 0.00E+00 5.56E+01 K-40 Sample ID: 413173 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 5/24/2016 5.22E+02 1.28E+02 1.96E+02 H3DW Sample ID: 413511 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/21/2016 9.97E-01 7.96E-01 1.31E+00 Beta

<2.73E+00 0.00E+00 2.73E+00 Mn-54

<3.22E+00 0.00E+00 3.22E+00 Co-58

<5.69E+00 0.00E+00 5.69E+00 Fe-59

<1.81E+00 0.00E+00 1.81E+00 Co-60

<6.73E+00 0.00E+00 6.73E+00 Zn-65

<6.35E+00 0.00E+00 6.35E+00 Zr-95

<1.67E+00 0.00E+00 1.67E+00 Nb-95

<1.08E+01 0.00E+00 1.08E+01 I-131

<3.52E+00 0.00E+00 3.52E+00 Cs-134

<3.38E+00 0.00E+00 3.38E+00 Cs-137

<7.25E+00 0.00E+00 7.25E+00 BaLa-140

<2.79E+01 0.00E+00 2.79E+01 Be-7 5.01E+01 3.17E+01 4.56E+01 K-40 Sample ID: 416850 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 7/19/2016 2.44E+00 8.95E-01 1.37E+00 Beta

<3.19E+00 0.00E+00 3.19E+00 Mn-54

<6.01E-01 0.00E+00 6.01E-01 Co-58

<8.78E+00 0.00E+00 8.78E+00 Fe-59

<7.33E-01 0.00E+00 7.33E-01 Co-60

<7.01E+00 0.00E+00 7.01E+00 Zn-65

<5.90E+00 0.00E+00 5.90E+00 Zr-95

<3.71E+00 0.00E+00 3.71E+00 Nb-95

<1.02E+01 0.00E+00 1.02E+01 I-131

<3.05E+00 0.00E+00 3.05E+00 Cs-134

<3.40E+00 0.00E+00 3.40E+00 Cs-137

<8.57E+00 0.00E+00 8.57E+00 BaLa-140

<3.23E+01 0.00E+00 3.23E+01 Be-7

<5.40E+01 0.00E+00 5.40E+01 K-40 Sample ID: 418772 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 8/16/2016 2.52E+00 7.99E-01 1.18E+00 Beta

<3.37E+00 0.00E+00 3.37E+00 Mn-54 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 51 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: DRINKING WATER Concentration (Activity): pCi/l Sample Point 214 [ INDICATOR - SSE @ 7.3 miles ]

Sample ID: 418772 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 8/16/2016

<3.72E+00 0.00E+00 3.72E+00 Co-58

<9.41E+00 0.00E+00 9.41E+00 Fe-59

<3.86E+00 0.00E+00 3.86E+00 Co-60

<7.74E+00 0.00E+00 7.74E+00 Zn-65

<7.79E+00 0.00E+00 7.79E+00 Zr-95

<5.73E+00 0.00E+00 5.73E+00 Nb-95

<1.13E+01 0.00E+00 1.13E+01 I-131

<4.21E+00 0.00E+00 4.21E+00 Cs-134

<4.52E+00 0.00E+00 4.52E+00 Cs-137

<1.12E+01 0.00E+00 1.12E+01 BaLa-140

<3.48E+01 0.00E+00 3.48E+01 Be-7

<6.99E+01 0.00E+00 6.99E+01 K-40 Sample ID: 420854 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 8/16/2016 6.89E+02 1.33E+02 1.92E+02 H3DW Sample ID: 420771 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 9/13/2016 2.11E+00 8.70E-01 1.36E+00 Beta

<2.07E+00 0.00E+00 2.07E+00 Mn-54

<2.94E+00 0.00E+00 2.94E+00 Co-58

<6.15E+00 0.00E+00 6.15E+00 Fe-59

<3.31E+00 0.00E+00 3.31E+00 Co-60

<4.56E+00 0.00E+00 4.56E+00 Zn-65

<5.22E+00 0.00E+00 5.22E+00 Zr-95

<2.92E+00 0.00E+00 2.92E+00 Nb-95

<9.76E+00 0.00E+00 9.76E+00 I-131

<3.30E+00 0.00E+00 3.30E+00 Cs-134

<2.70E+00 0.00E+00 2.70E+00 Cs-137

<4.28E+00 0.00E+00 4.28E+00 BaLa-140

<2.49E+01 0.00E+00 2.49E+01 Be-7

<3.92E+01 0.00E+00 3.92E+01 K-40 Sample ID: 424737 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 10/11/2016 2.22E+00 8.36E-01 1.29E+00 Beta

<2.16E+00 0.00E+00 2.16E+00 Mn-54

<3.33E+00 0.00E+00 3.33E+00 Co-58

<8.34E+00 0.00E+00 8.34E+00 Fe-59

<2.91E+00 0.00E+00 2.91E+00 Co-60

<8.63E+00 0.00E+00 8.63E+00 Zn-65

<6.54E+00 0.00E+00 6.54E+00 Zr-95

<4.81E+00 0.00E+00 4.81E+00 Nb-95

<1.18E+01 0.00E+00 1.18E+01 I-131

<3.53E+00 0.00E+00 3.53E+00 Cs-134

<4.15E+00 0.00E+00 4.15E+00 Cs-137

<7.73E+00 0.00E+00 7.73E+00 BaLa-140

<3.72E+01 0.00E+00 3.72E+01 Be-7 6.74E+01 3.85E+01 5.17E+01 K-40 Sample ID: 427411 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 11/8/2016 2.19E+00 8.27E-01 1.27E+00 Beta

<2.87E+00 0.00E+00 2.87E+00 Mn-54

<2.84E+00 0.00E+00 2.84E+00 Co-58

<8.84E+00 0.00E+00 8.84E+00 Fe-59

<3.53E+00 0.00E+00 3.53E+00 Co-60

<8.33E+00 0.00E+00 8.33E+00 Zn-65

<6.13E+00 0.00E+00 6.13E+00 Zr-95

<4.66E+00 0.00E+00 4.66E+00 Nb-95

<1.05E+01 0.00E+00 1.05E+01 I-131

<3.75E+00 0.00E+00 3.75E+00 Cs-134

<3.68E+00 0.00E+00 3.68E+00 Cs-137

<1.03E+01 0.00E+00 1.03E+01 BaLa-140

<3.84E+01 0.00E+00 3.84E+01 Be-7

<6.22E+01 0.00E+00 6.22E+01 K-40 Sample ID: 427833 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 12/6/2016 1.15E+03 1.39E+02 1.89E+02 H3DW Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 52 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: DRINKING WATER Concentration (Activity): pCi/l Sample Point 214 [ INDICATOR - SSE @ 7.3 miles ]

Sample ID: 429624 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 12/6/2016 1.54E+00 7.59E-01 1.20E+00 Beta

<3.14E+00 0.00E+00 3.14E+00 Mn-54

<4.22E+00 0.00E+00 4.22E+00 Co-58

<9.53E+00 0.00E+00 9.53E+00 Fe-59

<4.54E+00 0.00E+00 4.54E+00 Co-60

<9.39E+00 0.00E+00 9.39E+00 Zn-65

<7.09E+00 0.00E+00 7.09E+00 Zr-95

<3.59E+00 0.00E+00 3.59E+00 Nb-95

<9.09E+00 0.00E+00 9.09E+00 I-131

<3.99E+00 0.00E+00 3.99E+00 Cs-134

<2.79E+00 0.00E+00 2.79E+00 Cs-137

<9.60E+00 0.00E+00 9.60E+00 BaLa-140

<3.52E+01 0.00E+00 3.52E+01 Be-7

<6.42E+01 0.00E+00 6.42E+01 K-40 Sample Point 218 [ CONTROL - NNE @ 13.5 miles ]

Sample ID: 398473 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 1/6/2016

<4.49E-01 0.00E+00 1.41E+00 Beta

<4.13E+00 0.00E+00 4.13E+00 Mn-54

<3.61E+00 0.00E+00 3.61E+00 Co-58

<7.05E+00 0.00E+00 7.05E+00 Fe-59

<4.37E+00 0.00E+00 4.37E+00 Co-60

<7.35E+00 0.00E+00 7.35E+00 Zn-65

<6.39E+00 0.00E+00 6.39E+00 Zr-95

<6.92E+00 0.00E+00 6.92E+00 Nb-95

<1.19E+01 0.00E+00 1.19E+01 I-131

<4.36E+00 0.00E+00 4.36E+00 Cs-134

<4.00E+00 0.00E+00 4.00E+00 Cs-137

<2.48E+00 0.00E+00 2.48E+00 BaLa-140

<3.87E+01 0.00E+00 3.87E+01 Be-7

<6.44E+01 0.00E+00 6.44E+01 K-40 Sample ID: 400155 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 2/2/2016 9.63E-01 7.64E-01 1.25E+00 Beta

<2.30E+00 0.00E+00 2.30E+00 Mn-54

<4.32E+00 0.00E+00 4.32E+00 Co-58

<4.74E+00 0.00E+00 4.74E+00 Fe-59

<3.57E+00 0.00E+00 3.57E+00 Co-60

<8.59E+00 0.00E+00 8.59E+00 Zn-65

<5.80E+00 0.00E+00 5.80E+00 Zr-95

<4.80E+00 0.00E+00 4.80E+00 Nb-95

<1.14E+01 0.00E+00 1.14E+01 I-131

<3.87E+00 0.00E+00 3.87E+00 Cs-134

<3.15E+00 0.00E+00 3.15E+00 Cs-137

<2.34E+00 0.00E+00 2.34E+00 BaLa-140

<3.71E+01 0.00E+00 3.71E+01 Be-7

<7.19E+01 0.00E+00 7.19E+01 K-40 Sample ID: 401960 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 3/1/2016 1.24E+00 7.75E-01 1.25E+00 Beta

<3.88E+00 0.00E+00 3.88E+00 Mn-54

<2.95E+00 0.00E+00 2.95E+00 Co-58

<5.42E+00 0.00E+00 5.42E+00 Fe-59

<2.20E+00 0.00E+00 2.20E+00 Co-60

<8.24E+00 0.00E+00 8.24E+00 Zn-65

<7.25E+00 0.00E+00 7.25E+00 Zr-95

<4.56E+00 0.00E+00 4.56E+00 Nb-95

<1.13E+01 0.00E+00 1.13E+01 I-131

<2.97E+00 0.00E+00 2.97E+00 Cs-134

<4.06E+00 0.00E+00 4.06E+00 Cs-137

<9.60E+00 0.00E+00 9.60E+00 BaLa-140

<3.66E+01 0.00E+00 3.66E+01 Be-7

<7.98E+01 0.00E+00 7.98E+01 K-40 Sample ID: 403600 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 3/1/2016 2.58E+02 1.24E+02 1.99E+02 H3DW Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 53 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: DRINKING WATER Concentration (Activity): pCi/l Sample Point 218 [ CONTROL - NNE @ 13.5 miles ]

Sample ID: 405632 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/29/2016

<4.21E-01 0.00E+00 1.34E+00 Beta

<1.80E+00 0.00E+00 1.80E+00 Mn-54

<2.43E+00 0.00E+00 2.43E+00 Co-58

<4.64E+00 0.00E+00 4.64E+00 Fe-59

<1.85E+00 0.00E+00 1.85E+00 Co-60

<3.99E+00 0.00E+00 3.99E+00 Zn-65

<4.08E+00 0.00E+00 4.08E+00 Zr-95

<2.82E+00 0.00E+00 2.82E+00 Nb-95

<9.83E+00 0.00E+00 9.83E+00 I-131

<1.90E+00 0.00E+00 1.90E+00 Cs-134

<1.96E+00 0.00E+00 1.96E+00 Cs-137

<6.18E+00 0.00E+00 6.18E+00 BaLa-140

<1.64E+01 0.00E+00 1.64E+01 Be-7 3.32E+01 1.79E+01 2.52E+01 K-40 Sample ID: 408516 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/26/2016 1.39E+00 8.48E-01 1.37E+00 Beta

<3.40E+00 0.00E+00 3.40E+00 Mn-54

<3.68E+00 0.00E+00 3.68E+00 Co-58

<6.82E+00 0.00E+00 6.82E+00 Fe-59

<2.48E+00 0.00E+00 2.48E+00 Co-60

<5.72E+00 0.00E+00 5.72E+00 Zn-65

<4.61E+00 0.00E+00 4.61E+00 Zr-95

<3.53E+00 0.00E+00 3.53E+00 Nb-95

<1.20E+01 0.00E+00 1.20E+01 I-131

<3.00E+00 0.00E+00 3.00E+00 Cs-134

<2.94E+00 0.00E+00 2.94E+00 Cs-137

<8.65E+00 0.00E+00 8.65E+00 BaLa-140

<2.87E+01 0.00E+00 2.87E+01 Be-7 3.12E+01 2.45E+01 3.59E+01 K-40 Sample ID: 411589 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/24/2016 2.46E+00 8.55E-01 1.30E+00 Beta

<3.25E+00 0.00E+00 3.25E+00 Mn-54

<4.10E+00 0.00E+00 4.10E+00 Co-58

<6.01E+00 0.00E+00 6.01E+00 Fe-59

<4.67E+00 0.00E+00 4.67E+00 Co-60

<9.68E+00 0.00E+00 9.68E+00 Zn-65

<7.27E+00 0.00E+00 7.27E+00 Zr-95

<3.66E+00 0.00E+00 3.66E+00 Nb-95

<1.04E+01 0.00E+00 1.04E+01 I-131

<4.36E+00 0.00E+00 4.36E+00 Cs-134

<3.60E+00 0.00E+00 3.60E+00 Cs-137

<1.05E+01 0.00E+00 1.05E+01 BaLa-140

<3.18E+01 0.00E+00 3.18E+01 Be-7 4.27E+01 3.12E+01 4.20E+01 K-40 Sample ID: 413174 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 5/24/2016 4.44E+02 1.25E+02 1.94E+02 H3DW Sample ID: 413512 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/21/2016 1.21E+00 7.99E-01 1.30E+00 Beta

<4.13E+00 0.00E+00 4.13E+00 Mn-54

<4.76E+00 0.00E+00 4.76E+00 Co-58

<1.08E+01 0.00E+00 1.08E+01 Fe-59

<3.57E+00 0.00E+00 3.57E+00 Co-60

<9.68E+00 0.00E+00 9.68E+00 Zn-65

<5.21E+00 0.00E+00 5.21E+00 Zr-95

<5.93E+00 0.00E+00 5.93E+00 Nb-95

<1.17E+01 0.00E+00 1.17E+01 I-131

<4.98E+00 0.00E+00 4.98E+00 Cs-134

<3.15E+00 0.00E+00 3.15E+00 Cs-137

<6.46E+00 0.00E+00 6.46E+00 BaLa-140

<3.03E+01 0.00E+00 3.03E+01 Be-7

<6.60E+01 0.00E+00 6.60E+01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 54 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: DRINKING WATER Concentration (Activity): pCi/l Sample Point 218 [ CONTROL - NNE @ 13.5 miles ]

Sample ID: 416851 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 7/19/2016 1.13E+00 8.26E-01 1.35E+00 Beta

<2.31E+00 0.00E+00 2.31E+00 Mn-54

<3.96E+00 0.00E+00 3.96E+00 Co-58

<5.63E+00 0.00E+00 5.63E+00 Fe-59

<2.04E+00 0.00E+00 2.04E+00 Co-60

<6.06E+00 0.00E+00 6.06E+00 Zn-65

<6.84E+00 0.00E+00 6.84E+00 Zr-95

<4.06E+00 0.00E+00 4.06E+00 Nb-95

<1.14E+01 0.00E+00 1.14E+01 I-131

<3.17E+00 0.00E+00 3.17E+00 Cs-134

<3.29E+00 0.00E+00 3.29E+00 Cs-137

<4.31E+00 0.00E+00 4.31E+00 BaLa-140 1.56E+01 2.19E+01 3.64E+01 Be-7

<4.76E+01 0.00E+00 4.76E+01 K-40 Sample ID: 418773 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 8/16/2016 2.02E+00 7.69E-01 1.17E+00 Beta

<2.21E+00 0.00E+00 2.21E+00 Mn-54

<3.25E+00 0.00E+00 3.25E+00 Co-58

<8.29E+00 0.00E+00 8.29E+00 Fe-59

<1.65E+00 0.00E+00 1.65E+00 Co-60

<7.21E+00 0.00E+00 7.21E+00 Zn-65

<5.52E+00 0.00E+00 5.52E+00 Zr-95

<3.31E+00 0.00E+00 3.31E+00 Nb-95

<1.14E+01 0.00E+00 1.14E+01 I-131

<3.40E+00 0.00E+00 3.40E+00 Cs-134

<2.98E+00 0.00E+00 2.98E+00 Cs-137

<7.23E+00 0.00E+00 7.23E+00 BaLa-140

<3.16E+01 0.00E+00 3.16E+01 Be-7 4.45E+01 2.97E+01 4.19E+01 K-40 Sample ID: 420855 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 8/16/2016 4.63E+02 1.27E+02 1.94E+02 H3DW Sample ID: 420772 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 9/13/2016 2.06E+00 8.56E-01 1.34E+00 Beta

<2.13E+00 0.00E+00 2.13E+00 Mn-54

<2.73E+00 0.00E+00 2.73E+00 Co-58

<4.40E+00 0.00E+00 4.40E+00 Fe-59

<2.30E+00 0.00E+00 2.30E+00 Co-60

<4.43E+00 0.00E+00 4.43E+00 Zn-65

<3.47E+00 0.00E+00 3.47E+00 Zr-95

<2.82E+00 0.00E+00 2.82E+00 Nb-95

<1.19E+01 0.00E+00 1.19E+01 I-131

<2.35E+00 0.00E+00 2.35E+00 Cs-134

<2.17E+00 0.00E+00 2.17E+00 Cs-137

<7.01E+00 0.00E+00 7.01E+00 BaLa-140

<1.92E+01 0.00E+00 1.92E+01 Be-7

<3.34E+01 0.00E+00 3.34E+01 K-40 Sample ID: 424738 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 10/11/2016 1.84E+00 8.07E-01 1.27E+00 Beta

<4.09E+00 0.00E+00 4.09E+00 Mn-54

<4.73E+00 0.00E+00 4.73E+00 Co-58

<9.63E+00 0.00E+00 9.63E+00 Fe-59

<2.41E+00 0.00E+00 2.41E+00 Co-60

<6.48E+00 0.00E+00 6.48E+00 Zn-65

<7.24E+00 0.00E+00 7.24E+00 Zr-95

<4.81E+00 0.00E+00 4.81E+00 Nb-95

<1.15E+01 0.00E+00 1.15E+01 I-131

<4.95E+00 0.00E+00 4.95E+00 Cs-134

<3.37E+00 0.00E+00 3.37E+00 Cs-137

<1.15E+01 0.00E+00 1.15E+01 BaLa-140

<3.61E+01 0.00E+00 3.61E+01 Be-7

<7.10E+01 0.00E+00 7.10E+01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 55 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: DRINKING WATER Concentration (Activity): pCi/l Sample Point 218 [ CONTROL - NNE @ 13.5 miles ]

Sample ID: 427412 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 11/8/2016 2.95E+00 8.57E-01 1.27E+00 Beta

<3.32E+00 0.00E+00 3.32E+00 Mn-54

<3.14E+00 0.00E+00 3.14E+00 Co-58

<5.86E+00 0.00E+00 5.86E+00 Fe-59

<3.44E+00 0.00E+00 3.44E+00 Co-60

<7.33E+00 0.00E+00 7.33E+00 Zn-65

<6.71E+00 0.00E+00 6.71E+00 Zr-95

<3.81E+00 0.00E+00 3.81E+00 Nb-95

<1.19E+01 0.00E+00 1.19E+01 I-131

<3.43E+00 0.00E+00 3.43E+00 Cs-134

<3.43E+00 0.00E+00 3.43E+00 Cs-137

<6.60E+00 0.00E+00 6.60E+00 BaLa-140

<3.29E+01 0.00E+00 3.29E+01 Be-7 4.28E+01 3.53E+01 5.41E+01 K-40 Sample ID: 427834 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 12/6/2016 4.59E+02 1.23E+02 1.91E+02 H3DW Sample ID: 429625 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 12/6/2016 1.95E+00 7.75E-01 1.19E+00 Beta

<2.66E+00 0.00E+00 2.66E+00 Mn-54

<2.52E+00 0.00E+00 2.52E+00 Co-58

<6.45E+00 0.00E+00 6.45E+00 Fe-59

<2.79E+00 0.00E+00 2.79E+00 Co-60

<4.04E+00 0.00E+00 4.04E+00 Zn-65

<5.11E+00 0.00E+00 5.11E+00 Zr-95

<3.42E+00 0.00E+00 3.42E+00 Nb-95

<1.05E+01 0.00E+00 1.05E+01 I-131

<2.51E+00 0.00E+00 2.51E+00 Cs-134

<2.36E+00 0.00E+00 2.36E+00 Cs-137

<5.04E+00 0.00E+00 5.04E+00 BaLa-140

<1.97E+01 0.00E+00 1.97E+01 Be-7 2.88E+01 2.39E+01 3.65E+01 K-40 Media Type: FISH Concentration (Activity): pCi/kg Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 407486 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/11/2016 - 4/11/2016 PREDATOR

<1.78E+01 0.00E+00 1.78E+01 Mn-54

<1.76E+01 0.00E+00 1.76E+01 Co-58

<4.37E+01 0.00E+00 4.37E+01 Fe-59

<2.01E+01 0.00E+00 2.01E+01 Co-60

<3.49E+01 0.00E+00 3.49E+01 Zn-65

<1.04E+01 0.00E+00 1.04E+01 Nb-95

<1.82E+01 0.00E+00 1.82E+01 I-131

<2.19E+01 0.00E+00 2.19E+01 Cs-134

<1.34E+01 0.00E+00 1.34E+01 Cs-137

<1.39E+02 0.00E+00 1.39E+02 Be-7 3.91E+03 6.75E+02 2.89E+02 K-40

<1.92E+01 0.00E+00 1.92E+01 Ag-110M

<2.95E+01 0.00E+00 2.95E+01 Sb-122

<3.89E+01 0.00E+00 3.89E+01 Sb-125 Sample ID: 407487 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/11/2016 - 4/11/2016 FORAGER

<3.80E+01 0.00E+00 3.80E+01 Mn-54

<2.88E+01 0.00E+00 2.88E+01 Co-58

<8.54E+01 0.00E+00 8.54E+01 Fe-59

<4.56E+01 0.00E+00 4.56E+01 Co-60

<6.44E+01 0.00E+00 6.44E+01 Zn-65

<3.92E+01 0.00E+00 3.92E+01 Nb-95

<1.69E+02 0.00E+00 1.69E+02 I-131

<2.74E+01 0.00E+00 2.74E+01 Cs-134

<3.01E+01 0.00E+00 3.01E+01 Cs-137

<3.11E+02 0.00E+00 3.11E+02 Be-7 4.12E+03 9.13E+02 5.88E+02 K-40

<3.08E+01 0.00E+00 3.08E+01 Ag-110M

<7.26E+03 0.00E+00 7.26E+03 Sb-122 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 56 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: FISH Concentration (Activity): pCi/kg Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 407487 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/11/2016 - 4/11/2016 FORAGER

<1.01E+02 0.00E+00 1.01E+02 Sb-125 Sample ID: 407488 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/11/2016 - 4/11/2016 BOTMFEEDER

<2.45E+01 0.00E+00 2.45E+01 Mn-54

<2.65E+01 0.00E+00 2.65E+01 Co-58

<4.26E+01 0.00E+00 4.26E+01 Fe-59

<3.58E+01 0.00E+00 3.58E+01 Co-60

<3.81E+01 0.00E+00 3.81E+01 Zn-65

<2.55E+01 0.00E+00 2.55E+01 Nb-95

<2.72E+01 0.00E+00 2.72E+01 I-131

<3.45E+01 0.00E+00 3.45E+01 Cs-134

<2.61E+01 0.00E+00 2.61E+01 Cs-137

<1.92E+02 0.00E+00 1.92E+02 Be-7 4.38E+03 8.23E+02 3.64E+02 K-40

<1.64E+01 0.00E+00 1.64E+01 Ag-110M

<2.92E+01 0.00E+00 2.92E+01 Sb-122

<5.79E+01 0.00E+00 5.79E+01 Sb-125 Sample ID: 425351 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/3/2016 - 10/3/2016 PREDATOR

<2.45E+01 0.00E+00 2.45E+01 Mn-54

<2.60E+01 0.00E+00 2.60E+01 Co-58

<4.52E+01 0.00E+00 4.52E+01 Fe-59

<2.94E+01 0.00E+00 2.94E+01 Co-60

<5.10E+01 0.00E+00 5.10E+01 Zn-65

<1.91E+01 0.00E+00 1.91E+01 Nb-95

<2.44E+01 0.00E+00 2.44E+01 I-131

<2.26E+01 0.00E+00 2.26E+01 Cs-134

<2.55E+01 0.00E+00 2.55E+01 Cs-137

<1.73E+02 0.00E+00 1.73E+02 Be-7 2.55E+03 5.72E+02 7.43E+01 K-40

<2.55E+01 0.00E+00 2.55E+01 Ag-110M

<3.45E+01 0.00E+00 3.45E+01 Sb-122

<4.86E+01 0.00E+00 4.86E+01 Sb-125 Sample ID: 425352 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/3/2016 - 10/3/2016 FORAGER

<3.90E+01 0.00E+00 3.90E+01 Mn-54

<3.86E+01 0.00E+00 3.86E+01 Co-58

<8.74E+01 0.00E+00 8.74E+01 Fe-59

<4.38E+01 0.00E+00 4.38E+01 Co-60

<8.84E+01 0.00E+00 8.84E+01 Zn-65

<2.86E+01 0.00E+00 2.86E+01 Nb-95

<4.27E+01 0.00E+00 4.27E+01 I-131

<4.38E+01 0.00E+00 4.38E+01 Cs-134

<3.39E+01 0.00E+00 3.39E+01 Cs-137

<2.42E+02 0.00E+00 2.42E+02 Be-7 3.40E+03 8.48E+02 1.28E+02 K-40

<3.01E+01 0.00E+00 3.01E+01 Ag-110M

<3.14E+01 0.00E+00 3.14E+01 Sb-122

<9.12E+01 0.00E+00 9.12E+01 Sb-125 Sample ID: 425353 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/3/2016 - 10/3/2016 BOTMFEEDER

<2.44E+01 0.00E+00 2.44E+01 Mn-54

<1.35E+01 0.00E+00 1.35E+01 Co-58

<5.05E+01 0.00E+00 5.05E+01 Fe-59

<3.29E+01 0.00E+00 3.29E+01 Co-60

<3.50E+01 0.00E+00 3.50E+01 Zn-65

<2.65E+01 0.00E+00 2.65E+01 Nb-95

<1.72E+01 0.00E+00 1.72E+01 I-131

<2.51E+01 0.00E+00 2.51E+01 Cs-134

<2.54E+01 0.00E+00 2.54E+01 Cs-137

<1.74E+02 0.00E+00 1.74E+02 Be-7 2.84E+03 6.35E+02 3.73E+02 K-40

<1.72E+01 0.00E+00 1.72E+01 Ag-110M

<2.95E+01 0.00E+00 2.95E+01 Sb-122

<5.25E+01 0.00E+00 5.25E+01 Sb-125 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 57 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: FISH Concentration (Activity): pCi/kg Sample Point 216 [ CONTROL - NNE @ 4.19 miles ]

Sample ID: 407489 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/11/2016 - 4/11/2016 PREDATOR

<1.81E+01 0.00E+00 1.81E+01 Mn-54

<1.51E+01 0.00E+00 1.51E+01 Co-58

<2.80E+01 0.00E+00 2.80E+01 Fe-59

<2.07E+01 0.00E+00 2.07E+01 Co-60

<4.54E+01 0.00E+00 4.54E+01 Zn-65

<1.29E+01 0.00E+00 1.29E+01 Nb-95

<1.44E+01 0.00E+00 1.44E+01 I-131

<1.96E+01 0.00E+00 1.96E+01 Cs-134

<1.71E+01 0.00E+00 1.71E+01 Cs-137

<8.00E+01 0.00E+00 8.00E+01 Be-7 4.34E+03 6.08E+02 3.74E+01 K-40

<1.40E+01 0.00E+00 1.40E+01 Ag-110M

<2.15E+01 0.00E+00 2.15E+01 Sb-122

<3.12E+01 0.00E+00 3.12E+01 Sb-125 Sample ID: 407490 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/11/2016 - 4/11/2016 FORAGER

<1.18E+01 0.00E+00 1.18E+01 Mn-54

<1.23E+01 0.00E+00 1.23E+01 Co-58

<2.61E+01 0.00E+00 2.61E+01 Fe-59

<1.49E+01 0.00E+00 1.49E+01 Co-60

<2.00E+01 0.00E+00 2.00E+01 Zn-65

<1.13E+01 0.00E+00 1.13E+01 Nb-95

<1.05E+01 0.00E+00 1.05E+01 I-131

<1.33E+01 0.00E+00 1.33E+01 Cs-134

<5.37E+00 0.00E+00 5.37E+00 Cs-137

<6.68E+01 0.00E+00 6.68E+01 Be-7 3.29E+03 4.61E+02 1.37E+02 K-40

<6.02E+00 0.00E+00 6.02E+00 Ag-110M

<1.51E+01 0.00E+00 1.51E+01 Sb-122

<2.15E+01 0.00E+00 2.15E+01 Sb-125 Sample ID: 407491 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/11/2016 - 4/11/2016 BOTMFEEDER

<1.55E+01 0.00E+00 1.55E+01 Mn-54

<1.26E+01 0.00E+00 1.26E+01 Co-58

<2.84E+01 0.00E+00 2.84E+01 Fe-59

<1.58E+01 0.00E+00 1.58E+01 Co-60

<3.57E+01 0.00E+00 3.57E+01 Zn-65

<1.59E+01 0.00E+00 1.59E+01 Nb-95

<1.68E+01 0.00E+00 1.68E+01 I-131

<2.00E+01 0.00E+00 2.00E+01 Cs-134

<2.02E+01 0.00E+00 2.02E+01 Cs-137

<9.88E+01 0.00E+00 9.88E+01 Be-7 3.89E+03 6.03E+02 4.61E+01 K-40

<1.55E+01 0.00E+00 1.55E+01 Ag-110M

<2.26E+01 0.00E+00 2.26E+01 Sb-122

<3.86E+01 0.00E+00 3.86E+01 Sb-125 Sample ID: 425354 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/3/2016 - 10/3/2016 PREDATOR

<2.10E+01 0.00E+00 2.10E+01 Mn-54

<1.76E+01 0.00E+00 1.76E+01 Co-58

<3.71E+01 0.00E+00 3.71E+01 Fe-59

<2.76E+01 0.00E+00 2.76E+01 Co-60

<3.84E+01 0.00E+00 3.84E+01 Zn-65

<1.90E+01 0.00E+00 1.90E+01 Nb-95

<1.33E+01 0.00E+00 1.33E+01 I-131

<1.70E+01 0.00E+00 1.70E+01 Cs-134

<1.73E+01 0.00E+00 1.73E+01 Cs-137

<1.37E+02 0.00E+00 1.37E+02 Be-7 3.47E+03 5.80E+02 5.01E+01 K-40

<1.63E+01 0.00E+00 1.63E+01 Ag-110M

<2.34E+01 0.00E+00 2.34E+01 Sb-122

<3.79E+01 0.00E+00 3.79E+01 Sb-125 Sample ID: 425355 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/3/2016 - 10/3/2016 FORAGER

<1.68E+01 0.00E+00 1.68E+01 Mn-54

<1.19E+01 0.00E+00 1.19E+01 Co-58

<2.72E+01 0.00E+00 2.72E+01 Fe-59 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 58 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: FISH Concentration (Activity): pCi/kg Sample Point 216 [ CONTROL - NNE @ 4.19 miles ]

Sample ID: 425355 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/3/2016 - 10/3/2016 FORAGER

<1.21E+01 0.00E+00 1.21E+01 Co-60

<3.42E+01 0.00E+00 3.42E+01 Zn-65

<1.60E+01 0.00E+00 1.60E+01 Nb-95

<1.18E+01 0.00E+00 1.18E+01 I-131

<1.89E+01 0.00E+00 1.89E+01 Cs-134

<1.43E+01 0.00E+00 1.43E+01 Cs-137

<8.38E+01 0.00E+00 8.38E+01 Be-7 2.44E+03 4.48E+02 4.46E+01 K-40

<1.04E+01 0.00E+00 1.04E+01 Ag-110M

<1.93E+01 0.00E+00 1.93E+01 Sb-122

<3.37E+01 0.00E+00 3.37E+01 Sb-125 Sample ID: 425356 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/3/2016 - 10/3/2016 BOTMFEEDER

<1.26E+01 0.00E+00 1.26E+01 Mn-54

<1.55E+01 0.00E+00 1.55E+01 Co-58

<3.08E+01 0.00E+00 3.08E+01 Fe-59

<2.00E+01 0.00E+00 2.00E+01 Co-60

<2.46E+01 0.00E+00 2.46E+01 Zn-65

<1.07E+01 0.00E+00 1.07E+01 Nb-95

<8.83E+00 0.00E+00 8.83E+00 I-131

<1.09E+01 0.00E+00 1.09E+01 Cs-134

<1.53E+01 0.00E+00 1.53E+01 Cs-137

<9.78E+01 0.00E+00 9.78E+01 Be-7 3.15E+03 5.27E+02 2.85E+02 K-40

<1.27E+01 0.00E+00 1.27E+01 Ag-110M

<1.94E+01 0.00E+00 1.94E+01 Sb-122

<3.14E+01 0.00E+00 3.14E+01 Sb-125 Media Type: MILK Concentration (Activity): pCi/l Sample Point 221 [ CONTROL - NW @ 14.5 miles ]

Sample ID: 399249 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/12/2016 - 1/12/2016

<6.02E-01 0.00E+00 6.02E-01 LLI-131

<5.91E+00 0.00E+00 5.91E+00 I-131

<7.96E+00 0.00E+00 7.96E+00 Cs-134

<6.62E+00 0.00E+00 6.62E+00 Cs-137

<2.12E+00 0.00E+00 2.12E+00 BaLa-140

<5.60E+01 0.00E+00 5.60E+01 Be-7 1.64E+03 2.53E+02 1.17E+02 K-40 Sample ID: 400348 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/26/2016 - 1/26/2016

<4.86E-01 0.00E+00 4.86E-01 LLI-131

<6.64E+00 0.00E+00 6.64E+00 I-131

<8.79E+00 0.00E+00 8.79E+00 Cs-134

<8.17E+00 0.00E+00 8.17E+00 Cs-137

<2.19E+00 0.00E+00 2.19E+00 BaLa-140

<4.22E+01 0.00E+00 4.22E+01 Be-7 1.58E+03 2.51E+02 1.11E+02 K-40 Sample ID: 401344 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/9/2016 - 2/9/2016

<4.75E-01 0.00E+00 4.75E-01 LLI-131

<4.79E+00 0.00E+00 4.79E+00 I-131

<7.96E+00 0.00E+00 7.96E+00 Cs-134

<5.63E+00 0.00E+00 5.63E+00 Cs-137

<8.43E+00 0.00E+00 8.43E+00 BaLa-140

<6.40E+01 0.00E+00 6.40E+01 Be-7 1.56E+03 2.52E+02 1.58E+02 K-40 Sample ID: 402306 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/23/2016 - 2/23/2016

<5.47E-01 0.00E+00 5.47E-01 LLI-131

<7.00E+00 0.00E+00 7.00E+00 I-131

<6.87E+00 0.00E+00 6.87E+00 Cs-134

<8.73E+00 0.00E+00 8.73E+00 Cs-137

<5.65E+00 0.00E+00 5.65E+00 BaLa-140

<5.54E+01 0.00E+00 5.54E+01 Be-7 1.87E+03 2.74E+02 1.34E+02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 59 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: MILK Concentration (Activity): pCi/l Sample Point 221 [ CONTROL - NW @ 14.5 miles ]

Sample ID: 404514 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/8/2016 - 3/8/2016

<5.52E-01 0.00E+00 5.52E-01 LLI-131

<6.34E+00 0.00E+00 6.34E+00 I-131

<7.85E+00 0.00E+00 7.85E+00 Cs-134

<8.06E+00 0.00E+00 8.06E+00 Cs-137

<5.61E+00 0.00E+00 5.61E+00 BaLa-140

<3.29E+01 0.00E+00 3.29E+01 Be-7 1.45E+03 2.35E+02 1.36E+02 K-40 Sample ID: 406019 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/22/2016

<5.74E-01 0.00E+00 5.74E-01 LLI-131

<7.61E+00 0.00E+00 7.61E+00 I-131

<7.11E+00 0.00E+00 7.11E+00 Cs-134

<7.99E+00 0.00E+00 7.99E+00 Cs-137

<6.00E+00 0.00E+00 6.00E+00 BaLa-140

<4.77E+01 0.00E+00 4.77E+01 Be-7 1.62E+03 2.54E+02 1.39E+02 K-40 Sample ID: 407545 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/5/2016

<6.48E-01 0.00E+00 6.48E-01 LLI-131

<6.32E+00 0.00E+00 6.32E+00 I-131

<6.30E+00 0.00E+00 6.30E+00 Cs-134

<8.21E+00 0.00E+00 8.21E+00 Cs-137

<8.21E+00 0.00E+00 8.21E+00 BaLa-140

<5.17E+01 0.00E+00 5.17E+01 Be-7 1.54E+03 2.42E+02 1.92E+01 K-40 Sample ID: 409435 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/19/2016 - 4/19/2016

<4.97E-01 0.00E+00 4.97E-01 LLI-131

<5.94E+00 0.00E+00 5.94E+00 I-131

<6.66E+00 0.00E+00 6.66E+00 Cs-134

<1.02E+01 0.00E+00 1.02E+01 Cs-137

<6.19E+00 0.00E+00 6.19E+00 BaLa-140

<4.88E+01 0.00E+00 4.88E+01 Be-7 1.69E+03 2.57E+02 7.66E+01 K-40 Sample ID: 410925 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/3/2016

<4.18E-01 0.00E+00 4.18E-01 LLI-131

<7.83E+00 0.00E+00 7.83E+00 I-131

<8.54E+00 0.00E+00 8.54E+00 Cs-134

<6.74E+00 0.00E+00 6.74E+00 Cs-137

<5.74E+00 0.00E+00 5.74E+00 BaLa-140

<4.45E+01 0.00E+00 4.45E+01 Be-7 1.49E+03 2.35E+02 1.08E+02 K-40 Sample ID: 411746 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/17/2016 - 5/17/2016

<5.79E-01 0.00E+00 5.79E-01 LLI-131

<5.97E+00 0.00E+00 5.97E+00 I-131

<6.28E+00 0.00E+00 6.28E+00 Cs-134

<9.01E+00 0.00E+00 9.01E+00 Cs-137

<2.14E+00 0.00E+00 2.14E+00 BaLa-140

<5.14E+01 0.00E+00 5.14E+01 Be-7 1.69E+03 2.48E+02 1.72E+01 K-40 Sample ID: 412728 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/1/2016

<4.97E-01 0.00E+00 4.97E-01 LLI-131

<6.71E+00 0.00E+00 6.71E+00 I-131

<7.87E+00 0.00E+00 7.87E+00 Cs-134

<7.36E+00 0.00E+00 7.36E+00 Cs-137

<7.38E+00 0.00E+00 7.38E+00 BaLa-140

<5.59E+01 0.00E+00 5.59E+01 Be-7 1.82E+03 2.64E+02 8.56E+01 K-40 Sample ID: 413875 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/14/2016

<5.10E-01 0.00E+00 5.10E-01 LLI-131

<7.21E+00 0.00E+00 7.21E+00 I-131

<4.86E+00 0.00E+00 4.86E+00 Cs-134

<8.06E+00 0.00E+00 8.06E+00 Cs-137

<7.09E+00 0.00E+00 7.09E+00 BaLa-140 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 60 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: MILK Concentration (Activity): pCi/l Sample Point 221 [ CONTROL - NW @ 14.5 miles ]

Sample ID: 413875 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/14/2016 - 6/14/2016

<5.95E+01 0.00E+00 5.95E+01 Be-7 1.71E+03 2.56E+02 1.15E+02 K-40 Sample ID: 415396 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/28/2016 - 6/28/2016

<5.93E-01 0.00E+00 5.93E-01 LLI-131

<5.95E+00 0.00E+00 5.95E+00 I-131

<4.87E+00 0.00E+00 4.87E+00 Cs-134

<7.36E+00 0.00E+00 7.36E+00 Cs-137

<7.39E+00 0.00E+00 7.39E+00 BaLa-140

<5.59E+01 0.00E+00 5.59E+01 Be-7 1.78E+03 2.57E+02 1.73E+01 K-40 Sample ID: 417004 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/12/2016 - 7/12/2016

<6.08E-01 0.00E+00 6.08E-01 LLI-131

<6.07E+00 0.00E+00 6.07E+00 I-131

<7.39E+00 0.00E+00 7.39E+00 Cs-134

<6.08E+00 0.00E+00 6.08E+00 Cs-137

<7.09E+00 0.00E+00 7.09E+00 BaLa-140

<5.95E+01 0.00E+00 5.95E+01 Be-7 1.57E+03 2.37E+02 1.73E+01 K-40 Sample ID: 417792 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/26/2016 - 7/26/2016

<5.46E-01 0.00E+00 5.46E-01 LLI-131

<5.85E+00 0.00E+00 5.85E+00 I-131

<7.87E+00 0.00E+00 7.87E+00 Cs-134

<5.57E+00 0.00E+00 5.57E+00 Cs-137

<5.63E+00 0.00E+00 5.63E+00 BaLa-140

<5.54E+01 0.00E+00 5.54E+01 Be-7 1.70E+03 2.50E+02 1.73E+01 K-40 Sample ID: 418982 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/9/2016 - 8/9/2016

<4.86E-01 0.00E+00 4.86E-01 LLI-131

<7.15E+00 0.00E+00 7.15E+00 I-131

<6.29E+00 0.00E+00 6.29E+00 Cs-134

<6.54E+00 0.00E+00 6.54E+00 Cs-137

<8.23E+00 0.00E+00 8.23E+00 BaLa-140

<5.54E+01 0.00E+00 5.54E+01 Be-7 1.72E+03 2.57E+02 1.07E+02 K-40 Sample ID: 420013 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/23/2016 - 8/23/2016

<5.78E-01 0.00E+00 5.78E-01 LLI-131

<4.24E+00 0.00E+00 4.24E+00 I-131

<5.97E+00 0.00E+00 5.97E+00 Cs-134

<7.78E+00 0.00E+00 7.78E+00 Cs-137

<5.97E+00 0.00E+00 5.97E+00 BaLa-140

<4.22E+01 0.00E+00 4.22E+01 Be-7 1.55E+03 2.50E+02 1.32E+02 K-40 Sample ID: 421401 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/7/2016

<6.22E-01 0.00E+00 6.22E-01 LLI-131

<7.45E+00 0.00E+00 7.45E+00 I-131

<6.52E+00 0.00E+00 6.52E+00 Cs-134

<7.20E+00 0.00E+00 7.20E+00 Cs-137

<8.83E+00 0.00E+00 8.83E+00 BaLa-140

<5.77E+01 0.00E+00 5.77E+01 Be-7 1.47E+03 2.36E+02 1.15E+02 K-40 Sample ID: 423304 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/20/2016

<5.62E-01 0.00E+00 5.62E-01 LLI-131

<5.88E+00 0.00E+00 5.88E+00 I-131

<6.87E+00 0.00E+00 6.87E+00 Cs-134

<7.36E+00 0.00E+00 7.36E+00 Cs-137

<8.27E+00 0.00E+00 8.27E+00 BaLa-140 1.05E+01 3.27E+01 5.87E+01 Be-7 1.40E+03 2.20E+02 1.73E+01 K-40 Sample ID: 425413 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/4/2016

<6.05E-01 0.00E+00 6.05E-01 LLI-131 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 61 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: MILK Concentration (Activity): pCi/l Sample Point 221 [ CONTROL - NW @ 14.5 miles ]

Sample ID: 425413 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/4/2016

<6.06E+00 0.00E+00 6.06E+00 I-131

<9.38E+00 0.00E+00 9.38E+00 Cs-134

<7.18E+00 0.00E+00 7.18E+00 Cs-137

<7.23E+00 0.00E+00 7.23E+00 BaLa-140

<3.40E+01 0.00E+00 3.40E+01 Be-7 1.52E+03 2.35E+02 7.47E+01 K-40 Sample ID: 426351 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/18/2016 - 10/18/2016

<5.04E-01 0.00E+00 5.04E-01 LLI-131

<6.73E+00 0.00E+00 6.73E+00 I-131

<8.74E+00 0.00E+00 8.74E+00 Cs-134

<8.41E+00 0.00E+00 8.41E+00 Cs-137

<1.04E+01 0.00E+00 1.04E+01 BaLa-140

<5.37E+01 0.00E+00 5.37E+01 Be-7 1.43E+03 2.27E+02 8.08E+01 K-40 Sample ID: 427699 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/1/2016

<4.88E-01 0.00E+00 4.88E-01 LLI-131

<4.06E+00 0.00E+00 4.06E+00 I-131

<1.05E+01 0.00E+00 1.05E+01 Cs-134

<8.06E+00 0.00E+00 8.06E+00 Cs-137

<8.22E+00 0.00E+00 8.22E+00 BaLa-140

<5.32E+01 0.00E+00 5.32E+01 Be-7 1.45E+03 2.31E+02 1.05E+02 K-40 Sample ID: 428879 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/15/2016 - 11/15/2016

<5.30E-01 0.00E+00 5.30E-01 LLI-131

<6.23E+00 0.00E+00 6.23E+00 I-131

<8.30E+00 0.00E+00 8.30E+00 Cs-134

<7.71E+00 0.00E+00 7.71E+00 Cs-137

<2.14E+00 0.00E+00 2.14E+00 BaLa-140

<5.59E+01 0.00E+00 5.59E+01 Be-7 1.35E+03 2.20E+02 9.42E+01 K-40 Sample ID: 429937 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/29/2016 - 11/29/2016

<6.46E-01 0.00E+00 6.46E-01 LLI-131

<5.61E+00 0.00E+00 5.61E+00 I-131

<5.15E+00 0.00E+00 5.15E+00 Cs-134

<8.89E+00 0.00E+00 8.89E+00 Cs-137

<2.20E+00 0.00E+00 2.20E+00 BaLa-140

<5.37E+01 0.00E+00 5.37E+01 Be-7 1.47E+03 2.39E+02 1.02E+02 K-40 Sample ID: 431049 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/13/2016 - 12/13/2016

<4.39E-01 0.00E+00 4.39E-01 LLI-131

<5.35E+00 0.00E+00 5.35E+00 I-131

<7.85E+00 0.00E+00 7.85E+00 Cs-134

<8.39E+00 0.00E+00 8.39E+00 Cs-137

<5.61E+00 0.00E+00 5.61E+00 BaLa-140

<4.59E+01 0.00E+00 4.59E+01 Be-7 1.47E+03 2.34E+02 1.17E+02 K-40 Sample ID: 431797 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/28/2016 - 12/28/2016

<6.31E-01 0.00E+00 6.31E-01 LLI-131

<7.76E+00 0.00E+00 7.76E+00 I-131

<6.81E+00 0.00E+00 6.81E+00 Cs-134

<1.01E+01 0.00E+00 1.01E+01 Cs-137

<2.23E+00 0.00E+00 2.23E+00 BaLa-140

<4.33E+01 0.00E+00 4.33E+01 Be-7 1.56E+03 2.48E+02 1.08E+02 K-40 Media Type: SEDIMENT_SHORE Concentration (Activity): pCi/kg Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 406127 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/22/2016

<2.35E+01 0.00E+00 2.35E+01 Mn-54

<2.87E+01 0.00E+00 2.87E+01 Co-58 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 62 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SEDIMENT_SHORE Concentration (Activity): pCi/kg Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 406127 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/22/2016

<6.20E+01 0.00E+00 6.20E+01 Fe-59 5.92E+01 1.91E+01 1.98E+01 Co-60

<5.34E+01 0.00E+00 5.34E+01 Zn-65

<4.26E+01 0.00E+00 4.26E+01 Zr-95

<3.01E+01 0.00E+00 3.01E+01 Nb-95

<5.43E+01 0.00E+00 5.43E+01 I-131

<3.37E+01 0.00E+00 3.37E+01 Cs-134

<2.75E+01 0.00E+00 2.75E+01 Cs-137 2.07E+02 1.05E+02 1.96E+02 Be-7 1.63E+04 1.63E+03 3.33E+02 K-40

<1.73E+01 0.00E+00 1.73E+01 Co-57

<5.77E+03 0.00E+00 5.77E+03 Mo-99

<2.35E+01 0.00E+00 2.35E+01 Ag-110M

<9.22E+02 0.00E+00 9.22E+02 Sb-122

<5.44E+01 0.00E+00 5.44E+01 Sb-125 Sample ID: 421843 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/20/2016

<3.08E+01 0.00E+00 3.08E+01 Mn-54

<2.56E+01 0.00E+00 2.56E+01 Co-58

<5.41E+01 0.00E+00 5.41E+01 Fe-59 2.03E+02 4.41E+01 4.47E+01 Co-60

<6.80E+01 0.00E+00 6.80E+01 Zn-65

<3.40E+01 0.00E+00 3.40E+01 Zr-95

<3.01E+01 0.00E+00 3.01E+01 Nb-95

<2.17E+01 0.00E+00 2.17E+01 I-131

<3.24E+01 0.00E+00 3.24E+01 Cs-134

<3.59E+01 0.00E+00 3.59E+01 Cs-137 2.73E+02 1.43E+02 2.07E+02 Be-7 1.59E+04 1.57E+03 3.39E+02 K-40

<1.79E+01 0.00E+00 1.79E+01 Co-57

<2.96E+02 0.00E+00 2.96E+02 Mo-99

<2.25E+01 0.00E+00 2.25E+01 Ag-110M

<4.09E+01 0.00E+00 4.09E+01 Sb-122

<5.56E+01 0.00E+00 5.56E+01 Sb-125 Sample Point 210 [ INDICATOR - SE @ 2.31 miles ]

Sample ID: 406128 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/22/2016

<1.87E+01 0.00E+00 1.87E+01 Mn-54

<2.82E+01 0.00E+00 2.82E+01 Co-58

<4.84E+01 0.00E+00 4.84E+01 Fe-59

<2.57E+01 0.00E+00 2.57E+01 Co-60

<5.69E+01 0.00E+00 5.69E+01 Zn-65

<4.94E+01 0.00E+00 4.94E+01 Zr-95

<3.04E+01 0.00E+00 3.04E+01 Nb-95

<5.36E+01 0.00E+00 5.36E+01 I-131

<3.37E+01 0.00E+00 3.37E+01 Cs-134

<2.55E+01 0.00E+00 2.55E+01 Cs-137

<1.57E+02 0.00E+00 1.57E+02 Be-7 1.11E+04 1.18E+03 2.70E+02 K-40

<1.87E+01 0.00E+00 1.87E+01 Co-57

<5.47E+03 0.00E+00 5.47E+03 Mo-99

<1.98E+01 0.00E+00 1.98E+01 Ag-110M

<1.03E+03 0.00E+00 1.03E+03 Sb-122

<5.45E+01 0.00E+00 5.45E+01 Sb-125 Sample ID: 421844 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/20/2016

<2.19E+01 0.00E+00 2.19E+01 Mn-54

<1.81E+01 0.00E+00 1.81E+01 Co-58

<3.84E+01 0.00E+00 3.84E+01 Fe-59

<2.65E+01 0.00E+00 2.65E+01 Co-60

<5.21E+01 0.00E+00 5.21E+01 Zn-65

<3.40E+01 0.00E+00 3.40E+01 Zr-95

<1.87E+01 0.00E+00 1.87E+01 Nb-95

<1.64E+01 0.00E+00 1.64E+01 I-131

<3.16E+01 0.00E+00 3.16E+01 Cs-134

<2.53E+01 0.00E+00 2.53E+01 Cs-137 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 63 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SEDIMENT_SHORE Concentration (Activity): pCi/kg Sample Point 210 [ INDICATOR - SE @ 2.31 miles ]

Sample ID: 421844 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/20/2016

<1.67E+02 0.00E+00 1.67E+02 Be-7 1.33E+04 1.34E+03 2.06E+02 K-40

<1.39E+01 0.00E+00 1.39E+01 Co-57

<2.38E+02 0.00E+00 2.38E+02 Mo-99

<1.77E+01 0.00E+00 1.77E+01 Ag-110M

<4.24E+01 0.00E+00 4.24E+01 Sb-122

<4.88E+01 0.00E+00 4.88E+01 Sb-125 Sample Point 215 [ CONTROL - NNE @ 4.21 miles ]

Sample ID: 406129 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/22/2016 - 3/22/2016

<1.64E+01 0.00E+00 1.64E+01 Mn-54

<2.08E+01 0.00E+00 2.08E+01 Co-58

<6.14E+01 0.00E+00 6.14E+01 Fe-59

<1.96E+01 0.00E+00 1.96E+01 Co-60

<5.55E+01 0.00E+00 5.55E+01 Zn-65

<4.33E+01 0.00E+00 4.33E+01 Zr-95

<2.33E+01 0.00E+00 2.33E+01 Nb-95

<4.84E+01 0.00E+00 4.84E+01 I-131

<3.19E+01 0.00E+00 3.19E+01 Cs-134

<2.13E+01 0.00E+00 2.13E+01 Cs-137

<1.64E+02 0.00E+00 1.64E+02 Be-7 1.62E+04 1.58E+03 3.00E+02 K-40

<1.84E+01 0.00E+00 1.84E+01 Co-57

<5.52E+03 0.00E+00 5.52E+03 Mo-99

<1.70E+01 0.00E+00 1.70E+01 Ag-110M

<6.48E+02 0.00E+00 6.48E+02 Sb-122

<4.71E+01 0.00E+00 4.71E+01 Sb-125 Sample ID: 421845 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/20/2016 - 9/20/2016

<3.08E+01 0.00E+00 3.08E+01 Mn-54

<2.78E+01 0.00E+00 2.78E+01 Co-58

<7.01E+01 0.00E+00 7.01E+01 Fe-59

<3.96E+01 0.00E+00 3.96E+01 Co-60

<8.48E+01 0.00E+00 8.48E+01 Zn-65

<5.77E+01 0.00E+00 5.77E+01 Zr-95

<3.35E+01 0.00E+00 3.35E+01 Nb-95

<3.16E+01 0.00E+00 3.16E+01 I-131

<5.28E+01 0.00E+00 5.28E+01 Cs-134

<3.84E+01 0.00E+00 3.84E+01 Cs-137

<2.91E+02 0.00E+00 2.91E+02 Be-7 2.26E+04 2.28E+03 4.95E+02 K-40

<2.41E+01 0.00E+00 2.41E+01 Co-57

<3.98E+02 0.00E+00 3.98E+02 Mo-99

<3.04E+01 0.00E+00 3.04E+01 Ag-110M

<6.85E+01 0.00E+00 6.85E+01 Sb-122

<7.82E+01 0.00E+00 7.82E+01 Sb-125 Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 398931 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 1/6/2016

<2.28E+00 0.00E+00 2.28E+00 Mn-54

<2.28E+00 0.00E+00 2.28E+00 Co-58

<5.89E+00 0.00E+00 5.89E+00 Fe-59

<2.30E+00 0.00E+00 2.30E+00 Co-60

<3.89E+00 0.00E+00 3.89E+00 Zn-65

<5.24E+00 0.00E+00 5.24E+00 Zr-95

<3.18E+00 0.00E+00 3.18E+00 Nb-95

<1.04E+01 0.00E+00 1.04E+01 I-131

<2.33E+00 0.00E+00 2.33E+00 Cs-134

<2.23E+00 0.00E+00 2.23E+00 Cs-137

<5.49E+00 0.00E+00 5.49E+00 BaLa-140

<2.46E+01 0.00E+00 2.46E+01 Be-7

<3.97E+01 0.00E+00 3.97E+01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 64 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 400978 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 2/2/2016

<4.31E+00 0.00E+00 4.31E+00 Mn-54

<3.84E+00 0.00E+00 3.84E+00 Co-58

<7.72E+00 0.00E+00 7.72E+00 Fe-59

<3.08E+00 0.00E+00 3.08E+00 Co-60

<7.99E+00 0.00E+00 7.99E+00 Zn-65

<8.39E+00 0.00E+00 8.39E+00 Zr-95

<6.07E+00 0.00E+00 6.07E+00 Nb-95

<9.94E+00 0.00E+00 9.94E+00 I-131

<4.79E+00 0.00E+00 4.79E+00 Cs-134

<3.81E+00 0.00E+00 3.81E+00 Cs-137

<6.30E+00 0.00E+00 6.30E+00 BaLa-140

<3.01E+01 0.00E+00 3.01E+01 Be-7

<6.80E+01 0.00E+00 6.80E+01 K-40 Sample ID: 403033 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 3/1/2016

<2.83E+00 0.00E+00 2.83E+00 Mn-54

<3.32E+00 0.00E+00 3.32E+00 Co-58

<4.87E+00 0.00E+00 4.87E+00 Fe-59

<3.24E+00 0.00E+00 3.24E+00 Co-60

<6.49E+00 0.00E+00 6.49E+00 Zn-65

<5.13E+00 0.00E+00 5.13E+00 Zr-95

<4.95E+00 0.00E+00 4.95E+00 Nb-95

<1.17E+01 0.00E+00 1.17E+01 I-131

<3.87E+00 0.00E+00 3.87E+00 Cs-134

<4.02E+00 0.00E+00 4.02E+00 Cs-137

<6.64E+00 0.00E+00 6.64E+00 BaLa-140

<3.54E+01 0.00E+00 3.54E+01 Be-7

<4.02E+01 0.00E+00 4.02E+01 K-40 Sample ID: 403601 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 3/1/2016 4.37E+03 2.17E+02 1.99E+02 H3SW Sample ID: 406359 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/29/2016

<1.96E+00 0.00E+00 1.96E+00 Mn-54

<2.04E+00 0.00E+00 2.04E+00 Co-58

<4.37E+00 0.00E+00 4.37E+00 Fe-59

<1.77E+00 0.00E+00 1.77E+00 Co-60

<3.67E+00 0.00E+00 3.67E+00 Zn-65

<4.05E+00 0.00E+00 4.05E+00 Zr-95

<2.79E+00 0.00E+00 2.79E+00 Nb-95

<1.08E+01 0.00E+00 1.08E+01 I-131

<1.76E+00 0.00E+00 1.76E+00 Cs-134

<1.76E+00 0.00E+00 1.76E+00 Cs-137

<4.67E+00 0.00E+00 4.67E+00 BaLa-140

<1.80E+01 0.00E+00 1.80E+01 Be-7 5.25E+01 2.14E+01 2.91E+01 K-40 Sample ID: 409770 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/26/2016

<3.96E+00 0.00E+00 3.96E+00 Mn-54

<3.71E+00 0.00E+00 3.71E+00 Co-58

<5.46E+00 0.00E+00 5.46E+00 Fe-59

<3.35E+00 0.00E+00 3.35E+00 Co-60

<7.08E+00 0.00E+00 7.08E+00 Zn-65

<8.04E+00 0.00E+00 8.04E+00 Zr-95

<5.10E+00 0.00E+00 5.10E+00 Nb-95

<1.12E+01 0.00E+00 1.12E+01 I-131

<3.84E+00 0.00E+00 3.84E+00 Cs-134

<3.35E+00 0.00E+00 3.35E+00 Cs-137

<8.60E+00 0.00E+00 8.60E+00 BaLa-140

<3.09E+01 0.00E+00 3.09E+01 Be-7

<5.95E+01 0.00E+00 5.95E+01 K-40 Sample ID: 412209 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/24/2016

<3.37E+00 0.00E+00 3.37E+00 Mn-54

<3.17E+00 0.00E+00 3.17E+00 Co-58

<7.54E+00 0.00E+00 7.54E+00 Fe-59

<4.53E+00 0.00E+00 4.53E+00 Co-60 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 65 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 412209 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/24/2016

<7.09E+00 0.00E+00 7.09E+00 Zn-65

<7.42E+00 0.00E+00 7.42E+00 Zr-95

<6.10E+00 0.00E+00 6.10E+00 Nb-95

<1.02E+01 0.00E+00 1.02E+01 I-131

<3.98E+00 0.00E+00 3.98E+00 Cs-134

<3.67E+00 0.00E+00 3.67E+00 Cs-137

<9.24E+00 0.00E+00 9.24E+00 BaLa-140

<3.49E+01 0.00E+00 3.49E+01 Be-7 6.21E+01 3.10E+01 2.86E+01 K-40 Sample ID: 413175 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 5/24/2016 5.21E+03 2.12E+02 1.93E+02 H3SW Sample ID: 415016 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/21/2016

<4.12E+00 0.00E+00 4.12E+00 Mn-54

<3.76E+00 0.00E+00 3.76E+00 Co-58

<7.13E+00 0.00E+00 7.13E+00 Fe-59

<4.30E+00 0.00E+00 4.30E+00 Co-60

<7.34E+00 0.00E+00 7.34E+00 Zn-65

<5.33E+00 0.00E+00 5.33E+00 Zr-95

<3.93E+00 0.00E+00 3.93E+00 Nb-95

<1.18E+01 0.00E+00 1.18E+01 I-131

<4.20E+00 0.00E+00 4.20E+00 Cs-134

<4.57E+00 0.00E+00 4.57E+00 Cs-137

<8.67E+00 0.00E+00 8.67E+00 BaLa-140

<3.42E+01 0.00E+00 3.42E+01 Be-7

<5.48E+01 0.00E+00 5.48E+01 K-40 Sample ID: 417398 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 7/19/2016

<3.72E+00 0.00E+00 3.72E+00 Mn-54

<3.54E+00 0.00E+00 3.54E+00 Co-58

<6.02E+00 0.00E+00 6.02E+00 Fe-59

<2.66E+00 0.00E+00 2.66E+00 Co-60

<7.42E+00 0.00E+00 7.42E+00 Zn-65

<8.40E+00 0.00E+00 8.40E+00 Zr-95

<4.95E+00 0.00E+00 4.95E+00 Nb-95

<1.15E+01 0.00E+00 1.15E+01 I-131

<4.46E+00 0.00E+00 4.46E+00 Cs-134

<3.90E+00 0.00E+00 3.90E+00 Cs-137

<8.20E+00 0.00E+00 8.20E+00 BaLa-140

<3.11E+01 0.00E+00 3.11E+01 Be-7

<7.11E+01 0.00E+00 7.11E+01 K-40 Sample ID: 419483 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 8/16/2016

<3.39E+00 0.00E+00 3.39E+00 Mn-54

<3.90E+00 0.00E+00 3.90E+00 Co-58

<6.70E+00 0.00E+00 6.70E+00 Fe-59

<5.27E+00 0.00E+00 5.27E+00 Co-60

<6.78E+00 0.00E+00 6.78E+00 Zn-65

<6.91E+00 0.00E+00 6.91E+00 Zr-95

<5.51E+00 0.00E+00 5.51E+00 Nb-95

<1.19E+01 0.00E+00 1.19E+01 I-131

<4.21E+00 0.00E+00 4.21E+00 Cs-134

<3.15E+00 0.00E+00 3.15E+00 Cs-137

<8.36E+00 0.00E+00 8.36E+00 BaLa-140

<3.31E+01 0.00E+00 3.31E+01 Be-7 4.48E+01 3.18E+01 4.52E+01 K-40 Sample ID: 420856 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 8/16/2016 7.50E+03 2.64E+02 1.90E+02 H3SW Sample ID: 422560 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 9/13/2016

<2.35E+00 0.00E+00 2.35E+00 Mn-54

<2.53E+00 0.00E+00 2.53E+00 Co-58

<5.10E+00 0.00E+00 5.10E+00 Fe-59

<2.49E+00 0.00E+00 2.49E+00 Co-60

<4.92E+00 0.00E+00 4.92E+00 Zn-65 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 66 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 208 [ INDICATOR - S @ 0.45 miles ]

Sample ID: 422560 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 9/13/2016

<3.75E+00 0.00E+00 3.75E+00 Zr-95

<2.77E+00 0.00E+00 2.77E+00 Nb-95

<1.17E+01 0.00E+00 1.17E+01 I-131

<2.87E+00 0.00E+00 2.87E+00 Cs-134

<1.93E+00 0.00E+00 1.93E+00 Cs-137

<4.70E+00 0.00E+00 4.70E+00 BaLa-140

<2.37E+01 0.00E+00 2.37E+01 Be-7

<3.18E+01 0.00E+00 3.18E+01 K-40 Sample ID: 425981 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 10/11/2016

<3.19E+00 0.00E+00 3.19E+00 Mn-54

<4.12E+00 0.00E+00 4.12E+00 Co-58

<7.40E+00 0.00E+00 7.40E+00 Fe-59

<3.43E+00 0.00E+00 3.43E+00 Co-60

<1.02E+01 0.00E+00 1.02E+01 Zn-65

<8.43E+00 0.00E+00 8.43E+00 Zr-95

<5.66E+00 0.00E+00 5.66E+00 Nb-95

<1.13E+01 0.00E+00 1.13E+01 I-131

<4.27E+00 0.00E+00 4.27E+00 Cs-134

<3.73E+00 0.00E+00 3.73E+00 Cs-137

<8.55E+00 0.00E+00 8.55E+00 BaLa-140

<3.24E+01 0.00E+00 3.24E+01 Be-7

<6.03E+01 0.00E+00 6.03E+01 K-40 Sample ID: 428194 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 11/8/2016

<3.72E+00 0.00E+00 3.72E+00 Mn-54

<4.11E+00 0.00E+00 4.11E+00 Co-58

<9.15E+00 0.00E+00 9.15E+00 Fe-59

<3.08E+00 0.00E+00 3.08E+00 Co-60

<4.49E+00 0.00E+00 4.49E+00 Zn-65

<7.69E+00 0.00E+00 7.69E+00 Zr-95

<4.58E+00 0.00E+00 4.58E+00 Nb-95

<1.13E+01 0.00E+00 1.13E+01 I-131

<4.13E+00 0.00E+00 4.13E+00 Cs-134

<4.83E+00 0.00E+00 4.83E+00 Cs-137

<6.49E+00 0.00E+00 6.49E+00 BaLa-140

<3.47E+01 0.00E+00 3.47E+01 Be-7

<4.93E+01 0.00E+00 4.93E+01 K-40 Sample ID: 427835 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 12/6/2016 8.27E+03 2.54E+02 1.89E+02 H3SW Sample ID: 430558 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 12/6/2016

<2.45E+00 0.00E+00 2.45E+00 Mn-54

<3.76E+00 0.00E+00 3.76E+00 Co-58

<6.48E+00 0.00E+00 6.48E+00 Fe-59

<3.00E+00 0.00E+00 3.00E+00 Co-60

<5.53E+00 0.00E+00 5.53E+00 Zn-65

<6.13E+00 0.00E+00 6.13E+00 Zr-95

<4.83E+00 0.00E+00 4.83E+00 Nb-95

<1.13E+01 0.00E+00 1.13E+01 I-131

<3.90E+00 0.00E+00 3.90E+00 Cs-134

<3.52E+00 0.00E+00 3.52E+00 Cs-137

<5.10E+00 0.00E+00 5.10E+00 BaLa-140

<3.02E+01 0.00E+00 3.02E+01 Be-7

<6.18E+01 0.00E+00 6.18E+01 K-40 Sample Point 211 [ INDICATOR - ESE @ 4.06 miles ]

Sample ID: 398932 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 1/6/2016

<2.33E+00 0.00E+00 2.33E+00 Mn-54

<2.56E+00 0.00E+00 2.56E+00 Co-58

<4.86E+00 0.00E+00 4.86E+00 Fe-59

<2.62E+00 0.00E+00 2.62E+00 Co-60

<4.60E+00 0.00E+00 4.60E+00 Zn-65

<4.37E+00 0.00E+00 4.37E+00 Zr-95

<3.51E+00 0.00E+00 3.51E+00 Nb-95 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 67 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 211 [ INDICATOR - ESE @ 4.06 miles ]

Sample ID: 398932 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 1/6/2016

<1.13E+01 0.00E+00 1.13E+01 I-131

<3.06E+00 0.00E+00 3.06E+00 Cs-134

<2.46E+00 0.00E+00 2.46E+00 Cs-137

<8.42E+00 0.00E+00 8.42E+00 BaLa-140

<2.35E+01 0.00E+00 2.35E+01 Be-7 3.92E+01 2.45E+01 3.46E+01 K-40 Sample ID: 400979 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 2/2/2016

<3.97E+00 0.00E+00 3.97E+00 Mn-54

<4.93E+00 0.00E+00 4.93E+00 Co-58

<6.68E+00 0.00E+00 6.68E+00 Fe-59

<2.98E+00 0.00E+00 2.98E+00 Co-60

<8.84E+00 0.00E+00 8.84E+00 Zn-65

<9.42E+00 0.00E+00 9.42E+00 Zr-95

<4.83E+00 0.00E+00 4.83E+00 Nb-95

<1.19E+01 0.00E+00 1.19E+01 I-131

<4.61E+00 0.00E+00 4.61E+00 Cs-134

<3.04E+00 0.00E+00 3.04E+00 Cs-137

<8.87E+00 0.00E+00 8.87E+00 BaLa-140

<3.92E+01 0.00E+00 3.92E+01 Be-7

<6.78E+01 0.00E+00 6.78E+01 K-40 Sample ID: 403034 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 3/1/2016

<4.20E+00 0.00E+00 4.20E+00 Mn-54

<3.44E+00 0.00E+00 3.44E+00 Co-58

<7.70E+00 0.00E+00 7.70E+00 Fe-59

<2.68E+00 0.00E+00 2.68E+00 Co-60

<4.25E+00 0.00E+00 4.25E+00 Zn-65

<5.16E+00 0.00E+00 5.16E+00 Zr-95

<3.82E+00 0.00E+00 3.82E+00 Nb-95

<1.14E+01 0.00E+00 1.14E+01 I-131

<3.46E+00 0.00E+00 3.46E+00 Cs-134

<2.19E+00 0.00E+00 2.19E+00 Cs-137

<7.05E+00 0.00E+00 7.05E+00 BaLa-140

<3.71E+01 0.00E+00 3.71E+01 Be-7

<5.54E+01 0.00E+00 5.54E+01 K-40 Sample ID: 403602 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 3/1/2016 2.38E+02 1.23E+02 1.99E+02 H3SW Sample ID: 406360 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/29/2016

<2.31E+00 0.00E+00 2.31E+00 Mn-54

<2.91E+00 0.00E+00 2.91E+00 Co-58

<6.35E+00 0.00E+00 6.35E+00 Fe-59

<2.14E+00 0.00E+00 2.14E+00 Co-60

<4.94E+00 0.00E+00 4.94E+00 Zn-65

<5.31E+00 0.00E+00 5.31E+00 Zr-95

<3.26E+00 0.00E+00 3.26E+00 Nb-95

<1.18E+01 0.00E+00 1.18E+01 I-131

<2.69E+00 0.00E+00 2.69E+00 Cs-134

<1.99E+00 0.00E+00 1.99E+00 Cs-137

<9.33E+00 0.00E+00 9.33E+00 BaLa-140

<2.63E+01 0.00E+00 2.63E+01 Be-7

<4.36E+01 0.00E+00 4.36E+01 K-40 Sample ID: 409771 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/26/2016

<3.09E+00 0.00E+00 3.09E+00 Mn-54

<2.98E+00 0.00E+00 2.98E+00 Co-58

<5.75E+00 0.00E+00 5.75E+00 Fe-59

<3.89E+00 0.00E+00 3.89E+00 Co-60

<5.70E+00 0.00E+00 5.70E+00 Zn-65

<5.28E+00 0.00E+00 5.28E+00 Zr-95

<4.32E+00 0.00E+00 4.32E+00 Nb-95

<1.11E+01 0.00E+00 1.11E+01 I-131

<2.71E+00 0.00E+00 2.71E+00 Cs-134

<3.87E+00 0.00E+00 3.87E+00 Cs-137

<1.05E+01 0.00E+00 1.05E+01 BaLa-140 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 68 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 211 [ INDICATOR - ESE @ 4.06 miles ]

Sample ID: 409771 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/26/2016

<2.76E+01 0.00E+00 2.76E+01 Be-7 4.83E+01 3.08E+01 4.37E+01 K-40 Sample ID: 412210 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/24/2016

<3.93E+00 0.00E+00 3.93E+00 Mn-54

<3.91E+00 0.00E+00 3.91E+00 Co-58

<7.43E+00 0.00E+00 7.43E+00 Fe-59

<4.16E+00 0.00E+00 4.16E+00 Co-60

<6.27E+00 0.00E+00 6.27E+00 Zn-65

<6.93E+00 0.00E+00 6.93E+00 Zr-95

<4.10E+00 0.00E+00 4.10E+00 Nb-95

<1.12E+01 0.00E+00 1.12E+01 I-131

<4.16E+00 0.00E+00 4.16E+00 Cs-134

<2.46E+00 0.00E+00 2.46E+00 Cs-137

<1.19E+01 0.00E+00 1.19E+01 BaLa-140

<2.74E+01 0.00E+00 2.74E+01 Be-7 3.70E+01 2.99E+01 4.23E+01 K-40 Sample ID: 413176 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 5/24/2016 5.66E+02 1.29E+02 1.95E+02 H3SW Sample ID: 415017 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/22/2016

<4.13E+00 0.00E+00 4.13E+00 Mn-54

<2.95E+00 0.00E+00 2.95E+00 Co-58

<8.54E+00 0.00E+00 8.54E+00 Fe-59

<4.35E+00 0.00E+00 4.35E+00 Co-60

<8.00E+00 0.00E+00 8.00E+00 Zn-65

<7.30E+00 0.00E+00 7.30E+00 Zr-95

<5.78E+00 0.00E+00 5.78E+00 Nb-95

<1.17E+01 0.00E+00 1.17E+01 I-131

<4.13E+00 0.00E+00 4.13E+00 Cs-134

<3.15E+00 0.00E+00 3.15E+00 Cs-137

<6.60E+00 0.00E+00 6.60E+00 BaLa-140

<3.05E+01 0.00E+00 3.05E+01 Be-7

<6.40E+01 0.00E+00 6.40E+01 K-40 Sample ID: 417399 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/22/2016 - 7/19/2016

<3.46E+00 0.00E+00 3.46E+00 Mn-54

<4.49E+00 0.00E+00 4.49E+00 Co-58

<7.61E+00 0.00E+00 7.61E+00 Fe-59

<3.93E+00 0.00E+00 3.93E+00 Co-60

<7.88E+00 0.00E+00 7.88E+00 Zn-65

<7.58E+00 0.00E+00 7.58E+00 Zr-95

<4.98E+00 0.00E+00 4.98E+00 Nb-95

<1.19E+01 0.00E+00 1.19E+01 I-131

<3.57E+00 0.00E+00 3.57E+00 Cs-134

<3.98E+00 0.00E+00 3.98E+00 Cs-137

<1.10E+01 0.00E+00 1.10E+01 BaLa-140

<3.44E+01 0.00E+00 3.44E+01 Be-7

<6.72E+01 0.00E+00 6.72E+01 K-40 Sample ID: 419484 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 8/16/2016

<3.80E+00 0.00E+00 3.80E+00 Mn-54

<3.94E+00 0.00E+00 3.94E+00 Co-58

<6.15E+00 0.00E+00 6.15E+00 Fe-59

<4.46E+00 0.00E+00 4.46E+00 Co-60

<7.50E+00 0.00E+00 7.50E+00 Zn-65

<7.85E+00 0.00E+00 7.85E+00 Zr-95

<4.93E+00 0.00E+00 4.93E+00 Nb-95

<1.15E+01 0.00E+00 1.15E+01 I-131

<4.46E+00 0.00E+00 4.46E+00 Cs-134

<4.09E+00 0.00E+00 4.09E+00 Cs-137

<9.74E+00 0.00E+00 9.74E+00 BaLa-140

<2.75E+01 0.00E+00 2.75E+01 Be-7

<7.39E+01 0.00E+00 7.39E+01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 69 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 211 [ INDICATOR - ESE @ 4.06 miles ]

Sample ID: 420857 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 8/16/2016 5.90E+02 1.31E+02 1.94E+02 H3SW Sample ID: 422561 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 9/13/2016

<1.47E+00 0.00E+00 1.47E+00 Mn-54

<2.38E+00 0.00E+00 2.38E+00 Co-58

<4.57E+00 0.00E+00 4.57E+00 Fe-59

<2.08E+00 0.00E+00 2.08E+00 Co-60

<3.63E+00 0.00E+00 3.63E+00 Zn-65

<4.01E+00 0.00E+00 4.01E+00 Zr-95

<2.66E+00 0.00E+00 2.66E+00 Nb-95

<1.05E+01 0.00E+00 1.05E+01 I-131

<2.53E+00 0.00E+00 2.53E+00 Cs-134

<2.31E+00 0.00E+00 2.31E+00 Cs-137

<6.84E+00 0.00E+00 6.84E+00 BaLa-140

<2.18E+01 0.00E+00 2.18E+01 Be-7 3.17E+01 2.32E+01 3.57E+01 K-40 Sample ID: 425982 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 10/11/2016

<3.41E+00 0.00E+00 3.41E+00 Mn-54

<2.74E+00 0.00E+00 2.74E+00 Co-58

<4.28E+00 0.00E+00 4.28E+00 Fe-59

<3.49E+00 0.00E+00 3.49E+00 Co-60

<5.63E+00 0.00E+00 5.63E+00 Zn-65

<6.95E+00 0.00E+00 6.95E+00 Zr-95

<3.97E+00 0.00E+00 3.97E+00 Nb-95

<1.19E+01 0.00E+00 1.19E+01 I-131

<3.08E+00 0.00E+00 3.08E+00 Cs-134

<2.40E+00 0.00E+00 2.40E+00 Cs-137

<7.76E+00 0.00E+00 7.76E+00 BaLa-140

<3.01E+01 0.00E+00 3.01E+01 Be-7

<5.18E+01 0.00E+00 5.18E+01 K-40 Sample ID: 428195 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 11/8/2016

<2.85E+00 0.00E+00 2.85E+00 Mn-54

<3.47E+00 0.00E+00 3.47E+00 Co-58

<7.20E+00 0.00E+00 7.20E+00 Fe-59

<2.45E+00 0.00E+00 2.45E+00 Co-60

<6.78E+00 0.00E+00 6.78E+00 Zn-65

<5.96E+00 0.00E+00 5.96E+00 Zr-95

<3.97E+00 0.00E+00 3.97E+00 Nb-95

<1.16E+01 0.00E+00 1.16E+01 I-131

<3.77E+00 0.00E+00 3.77E+00 Cs-134

<3.13E+00 0.00E+00 3.13E+00 Cs-137

<6.51E+00 0.00E+00 6.51E+00 BaLa-140

<2.62E+01 0.00E+00 2.62E+01 Be-7 6.02E+01 2.90E+01 3.54E+01 K-40 Sample ID: 427836 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 12/6/2016 1.13E+03 1.38E+02 1.87E+02 H3SW Sample ID: 430559 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 12/6/2016

<3.58E+00 0.00E+00 3.58E+00 Mn-54

<3.98E+00 0.00E+00 3.98E+00 Co-58

<8.70E+00 0.00E+00 8.70E+00 Fe-59

<4.99E+00 0.00E+00 4.99E+00 Co-60

<5.85E+00 0.00E+00 5.85E+00 Zn-65

<8.28E+00 0.00E+00 8.28E+00 Zr-95

<4.28E+00 0.00E+00 4.28E+00 Nb-95

<1.18E+01 0.00E+00 1.18E+01 I-131

<3.29E+00 0.00E+00 3.29E+00 Cs-134

<3.96E+00 0.00E+00 3.96E+00 Cs-137

<9.64E+00 0.00E+00 9.64E+00 BaLa-140

<2.89E+01 0.00E+00 2.89E+01 Be-7 2.81E+01 2.87E+01 4.49E+01 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 70 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 215 [ CONTROL - NNE @ 4.21 miles ]

Sample ID: 398933 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 1/6/2016

<1.57E+00 0.00E+00 1.57E+00 Mn-54

<2.64E+00 0.00E+00 2.64E+00 Co-58

<4.92E+00 0.00E+00 4.92E+00 Fe-59

<2.22E+00 0.00E+00 2.22E+00 Co-60

<4.79E+00 0.00E+00 4.79E+00 Zn-65

<4.96E+00 0.00E+00 4.96E+00 Zr-95

<3.42E+00 0.00E+00 3.42E+00 Nb-95

<1.05E+01 0.00E+00 1.05E+01 I-131

<2.23E+00 0.00E+00 2.23E+00 Cs-134

<2.22E+00 0.00E+00 2.22E+00 Cs-137

<7.55E+00 0.00E+00 7.55E+00 BaLa-140

<2.47E+01 0.00E+00 2.47E+01 Be-7

<4.24E+01 0.00E+00 4.24E+01 K-40 Sample ID: 400980 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 2/2/2016

<2.53E+00 0.00E+00 2.53E+00 Mn-54

<2.97E+00 0.00E+00 2.97E+00 Co-58

<6.59E+00 0.00E+00 6.59E+00 Fe-59

<2.61E+00 0.00E+00 2.61E+00 Co-60

<5.81E+00 0.00E+00 5.81E+00 Zn-65

<6.81E+00 0.00E+00 6.81E+00 Zr-95

<3.47E+00 0.00E+00 3.47E+00 Nb-95

<1.08E+01 0.00E+00 1.08E+01 I-131

<3.00E+00 0.00E+00 3.00E+00 Cs-134

<2.91E+00 0.00E+00 2.91E+00 Cs-137

<8.26E+00 0.00E+00 8.26E+00 BaLa-140

<3.71E+01 0.00E+00 3.71E+01 Be-7

<6.03E+01 0.00E+00 6.03E+01 K-40 Sample ID: 403035 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 3/1/2016

<3.10E+00 0.00E+00 3.10E+00 Mn-54

<3.16E+00 0.00E+00 3.16E+00 Co-58

<6.46E+00 0.00E+00 6.46E+00 Fe-59

<3.32E+00 0.00E+00 3.32E+00 Co-60

<6.76E+00 0.00E+00 6.76E+00 Zn-65

<5.60E+00 0.00E+00 5.60E+00 Zr-95

<3.20E+00 0.00E+00 3.20E+00 Nb-95

<1.10E+01 0.00E+00 1.10E+01 I-131

<3.56E+00 0.00E+00 3.56E+00 Cs-134

<3.58E+00 0.00E+00 3.58E+00 Cs-137

<5.41E+00 0.00E+00 5.41E+00 BaLa-140

<2.71E+01 0.00E+00 2.71E+01 Be-7 4.77E+01 2.83E+01 3.77E+01 K-40 Sample ID: 403603 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/8/2015 - 3/1/2016 2.79E+02 1.24E+02 1.99E+02 H3SW Sample ID: 406361 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/29/2016

<1.36E+00 0.00E+00 1.36E+00 Mn-54

<1.67E+00 0.00E+00 1.67E+00 Co-58

<3.53E+00 0.00E+00 3.53E+00 Fe-59

<1.44E+00 0.00E+00 1.44E+00 Co-60

<3.07E+00 0.00E+00 3.07E+00 Zn-65

<3.14E+00 0.00E+00 3.14E+00 Zr-95

<2.16E+00 0.00E+00 2.16E+00 Nb-95

<9.94E+00 0.00E+00 9.94E+00 I-131

<1.69E+00 0.00E+00 1.69E+00 Cs-134

<1.56E+00 0.00E+00 1.56E+00 Cs-137

<4.26E+00 0.00E+00 4.26E+00 BaLa-140

<1.29E+01 0.00E+00 1.29E+01 Be-7 3.67E+01 1.80E+01 2.61E+01 K-40 Sample ID: 409772 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/26/2016

<2.52E+00 0.00E+00 2.52E+00 Mn-54

<2.94E+00 0.00E+00 2.94E+00 Co-58

<3.91E+00 0.00E+00 3.91E+00 Fe-59

<3.20E+00 0.00E+00 3.20E+00 Co-60 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 71 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 215 [ CONTROL - NNE @ 4.21 miles ]

Sample ID: 409772 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/29/2016 - 4/26/2016

<6.53E+00 0.00E+00 6.53E+00 Zn-65

<6.66E+00 0.00E+00 6.66E+00 Zr-95

<4.86E+00 0.00E+00 4.86E+00 Nb-95

<1.13E+01 0.00E+00 1.13E+01 I-131

<3.64E+00 0.00E+00 3.64E+00 Cs-134

<3.09E+00 0.00E+00 3.09E+00 Cs-137

<7.14E+00 0.00E+00 7.14E+00 BaLa-140

<2.79E+01 0.00E+00 2.79E+01 Be-7 3.30E+01 2.96E+01 4.58E+01 K-40 Sample ID: 412211 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/26/2016 - 5/24/2016

<2.88E+00 0.00E+00 2.88E+00 Mn-54

<4.21E+00 0.00E+00 4.21E+00 Co-58

<8.87E+00 0.00E+00 8.87E+00 Fe-59

<3.46E+00 0.00E+00 3.46E+00 Co-60

<5.49E+00 0.00E+00 5.49E+00 Zn-65

<7.83E+00 0.00E+00 7.83E+00 Zr-95

<4.69E+00 0.00E+00 4.69E+00 Nb-95

<1.18E+01 0.00E+00 1.18E+01 I-131

<4.00E+00 0.00E+00 4.00E+00 Cs-134

<3.88E+00 0.00E+00 3.88E+00 Cs-137

<1.03E+01 0.00E+00 1.03E+01 BaLa-140

<3.36E+01 0.00E+00 3.36E+01 Be-7

<5.77E+01 0.00E+00 5.77E+01 K-40 Sample ID: 413177 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 5/24/2016 2.30E+02 1.20E+02 1.95E+02 H3SW Sample ID: 415018 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 6/21/2016

<3.46E+00 0.00E+00 3.46E+00 Mn-54

<4.74E+00 0.00E+00 4.74E+00 Co-58

<8.36E+00 0.00E+00 8.36E+00 Fe-59

<4.61E+00 0.00E+00 4.61E+00 Co-60

<9.04E+00 0.00E+00 9.04E+00 Zn-65

<6.30E+00 0.00E+00 6.30E+00 Zr-95

<5.25E+00 0.00E+00 5.25E+00 Nb-95

<1.20E+01 0.00E+00 1.20E+01 I-131

<4.33E+00 0.00E+00 4.33E+00 Cs-134

<3.99E+00 0.00E+00 3.99E+00 Cs-137

<1.13E+01 0.00E+00 1.13E+01 BaLa-140

<2.69E+01 0.00E+00 2.69E+01 Be-7

<5.40E+01 0.00E+00 5.40E+01 K-40 Sample ID: 417400 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/21/2016 - 7/19/2016

<2.69E+00 0.00E+00 2.69E+00 Mn-54

<3.23E+00 0.00E+00 3.23E+00 Co-58

<7.67E+00 0.00E+00 7.67E+00 Fe-59

<4.24E+00 0.00E+00 4.24E+00 Co-60

<7.78E+00 0.00E+00 7.78E+00 Zn-65

<4.93E+00 0.00E+00 4.93E+00 Zr-95

<3.60E+00 0.00E+00 3.60E+00 Nb-95

<1.16E+01 0.00E+00 1.16E+01 I-131

<4.50E+00 0.00E+00 4.50E+00 Cs-134

<3.44E+00 0.00E+00 3.44E+00 Cs-137

<8.61E+00 0.00E+00 8.61E+00 BaLa-140

<3.47E+01 0.00E+00 3.47E+01 Be-7 6.11E+01 3.93E+01 5.44E+01 K-40 Sample ID: 419485 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 8/16/2016

<4.98E+00 0.00E+00 4.98E+00 Mn-54

<4.76E+00 0.00E+00 4.76E+00 Co-58

<8.49E+00 0.00E+00 8.49E+00 Fe-59

<3.98E+00 0.00E+00 3.98E+00 Co-60

<7.33E+00 0.00E+00 7.33E+00 Zn-65

<6.83E+00 0.00E+00 6.83E+00 Zr-95

<4.29E+00 0.00E+00 4.29E+00 Nb-95

<1.13E+01 0.00E+00 1.13E+01 I-131 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 72 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 215 [ CONTROL - NNE @ 4.21 miles ]

Sample ID: 419485 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/19/2016 - 8/16/2016

<4.58E+00 0.00E+00 4.58E+00 Cs-134

<3.38E+00 0.00E+00 3.38E+00 Cs-137

<9.46E+00 0.00E+00 9.46E+00 BaLa-140

<3.47E+01 0.00E+00 3.47E+01 Be-7

<7.00E+01 0.00E+00 7.00E+01 K-40 Sample ID: 420858 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/24/2016 - 8/16/2016 2.27E+02 1.18E+02 1.91E+02 H3SW Sample ID: 422562 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 9/13/2016

<1.54E+00 0.00E+00 1.54E+00 Mn-54

<1.84E+00 0.00E+00 1.84E+00 Co-58

<3.95E+00 0.00E+00 3.95E+00 Fe-59

<1.68E+00 0.00E+00 1.68E+00 Co-60

<3.81E+00 0.00E+00 3.81E+00 Zn-65

<3.59E+00 0.00E+00 3.59E+00 Zr-95

<2.18E+00 0.00E+00 2.18E+00 Nb-95

<9.54E+00 0.00E+00 9.54E+00 I-131

<1.84E+00 0.00E+00 1.84E+00 Cs-134

<1.78E+00 0.00E+00 1.78E+00 Cs-137

<5.19E+00 0.00E+00 5.19E+00 BaLa-140

<1.59E+01 0.00E+00 1.59E+01 Be-7 3.66E+01 1.63E+01 2.18E+01 K-40 Sample ID: 425983 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/13/2016 - 10/11/2016

<3.14E+00 0.00E+00 3.14E+00 Mn-54

<2.72E+00 0.00E+00 2.72E+00 Co-58

<6.90E+00 0.00E+00 6.90E+00 Fe-59

<2.79E+00 0.00E+00 2.79E+00 Co-60

<4.61E+00 0.00E+00 4.61E+00 Zn-65

<6.19E+00 0.00E+00 6.19E+00 Zr-95

<4.61E+00 0.00E+00 4.61E+00 Nb-95

<1.20E+01 0.00E+00 1.20E+01 I-131

<3.35E+00 0.00E+00 3.35E+00 Cs-134

<3.04E+00 0.00E+00 3.04E+00 Cs-137

<8.49E+00 0.00E+00 8.49E+00 BaLa-140

<3.45E+01 0.00E+00 3.45E+01 Be-7 4.45E+01 2.83E+01 3.83E+01 K-40 Sample ID: 428196 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/11/2016 - 11/8/2016

<2.91E+00 0.00E+00 2.91E+00 Mn-54

<4.13E+00 0.00E+00 4.13E+00 Co-58

<6.50E+00 0.00E+00 6.50E+00 Fe-59

<3.33E+00 0.00E+00 3.33E+00 Co-60

<6.12E+00 0.00E+00 6.12E+00 Zn-65

<6.73E+00 0.00E+00 6.73E+00 Zr-95

<3.58E+00 0.00E+00 3.58E+00 Nb-95

<1.18E+01 0.00E+00 1.18E+01 I-131

<2.13E+00 0.00E+00 2.13E+00 Cs-134

<4.27E+00 0.00E+00 4.27E+00 Cs-137

<6.84E+00 0.00E+00 6.84E+00 BaLa-140

<2.79E+01 0.00E+00 2.79E+01 Be-7

<6.18E+01 0.00E+00 6.18E+01 K-40 Sample ID: 427837 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/16/2016 - 12/6/2016 3.87E+02 1.19E+02 1.87E+02 H3SW Sample ID: 430560 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 12/6/2016

<2.86E+00 0.00E+00 2.86E+00 Mn-54

<3.02E+00 0.00E+00 3.02E+00 Co-58

<6.41E+00 0.00E+00 6.41E+00 Fe-59

<2.14E+00 0.00E+00 2.14E+00 Co-60

<6.72E+00 0.00E+00 6.72E+00 Zn-65

<5.36E+00 0.00E+00 5.36E+00 Zr-95

<5.14E+00 0.00E+00 5.14E+00 Nb-95

<1.12E+01 0.00E+00 1.12E+01 I-131

<3.02E+00 0.00E+00 3.02E+00 Cs-134 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 73 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: SURFACE WATER Concentration (Activity): pCi/l Sample Point 215 [ CONTROL - NNE @ 4.21 miles ]

Sample ID: 430560 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/8/2016 - 12/6/2016

<3.13E+00 0.00E+00 3.13E+00 Cs-137

<5.92E+00 0.00E+00 5.92E+00 BaLa-140

<3.01E+01 0.00E+00 3.01E+01 Be-7 1.11E+01 2.84E+01 4.99E+01 K-40 Media Type: TLD Concentration (Activity): mR/Standard Quarter Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

TLD RING TLD_INNER Sample ID: 403360 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 19.33 mR/Std Qtr Sample ID: 412934 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 15.81 mR/Std Qtr Sample ID: 420933 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 15.31 mR/Std Qtr Sample ID: 430280 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 20.13 mR/Std Qtr Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

TLD RING TLD_INNER Sample ID: 403361 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 18.87 mR/Std Qtr Sample ID: 412935 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 17.16 mR/Std Qtr Sample ID: 420934 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 14.14 mR/Std Qtr Sample ID: 430281 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 17.84 mR/Std Qtr Sample Point 203 [ INDICATOR - ESE @ 0.38 miles ]

TLD RING TLD_INNER Sample ID: 403362 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 20.16 mR/Std Qtr Sample ID: 412936 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 16.36 mR/Std Qtr Sample ID: 420935 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 16.58 mR/Std Qtr Sample ID: 430282 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 25.29 mR/Std Qtr Sample Point 204 [ INDICATOR - SSW @ 0.48 miles ]

TLD RING TLD_INNER Sample ID: 403363 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 17.57 mR/Std Qtr Sample ID: 412937 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 14.74 mR/Std Qtr Sample ID: 420936 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 15.11 mR/Std Qtr Sample ID: 430283 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 19.86 mR/Std Qtr Sample Point 205 [ INDICATOR - SW @ 0.5 miles ]

TLD RING TLD_INNER Sample ID: 403364 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 19.29 mR/Std Qtr Sample ID: 412938 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 17.38 mR/Std Qtr Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 74 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter Sample Point 205 [ INDICATOR - SW @ 0.5 miles ]

TLD RING TLD_INNER Sample ID: 420937 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 17.63 mR/Std Qtr Sample ID: 430284 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 20.35 mR/Std Qtr Sample Point 206 [ INDICATOR - WNW @ 0.67 miles ]

TLD RING TLD_INNER Sample ID: 403365 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 23.82 mR/Std Qtr Sample ID: 412939 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 20.64 mR/Std Qtr Sample ID: 420938 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 20.39 mR/Std Qtr Sample ID: 430285 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 23.34 mR/Std Qtr Sample Point 207 [ INDICATOR - NNW @ 0.95 miles ]

TLD RING TLD_INNER Sample ID: 403366 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 22.19 mR/Std Qtr Sample ID: 412940 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 18.42 mR/Std Qtr Sample ID: 420939 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 18.08 mR/Std Qtr Sample ID: 430286 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 20.71 mR/Std Qtr Sample Point 212 [ INDICATOR - E @ 3.32 miles ]

TLD RING TLD_SPEC Sample ID: 403367 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 17.68 mR/Std Qtr Sample ID: 412941 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 15.05 mR/Std Qtr Sample ID: 420940 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 14.60 mR/Std Qtr Sample ID: 430287 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 18.84 mR/Std Qtr Sample Point 217 [ CONTROL - SSE @ 10.3 miles ]

TLD RING TLD_CTRL Sample ID: 403368 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 14.72 mR/Std Qtr Sample ID: 420941 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 11.15 mR/Std Qtr Sample Point 222 [ INDICATOR - N @ 0.71 miles ]

TLD RING TLD_INNER Sample ID: 403369 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 18.56 mR/Std Qtr Sample ID: 412943 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 15.20 mR/Std Qtr Sample ID: 420942 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 15.49 mR/Std Qtr Sample ID: 430289 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 18.83 mR/Std Qtr Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 75 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter Sample Point 223 [ INDICATOR - E @ 0.57 miles ]

TLD RING TLD_INNER Sample ID: 403370 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 22.01 mR/Std Qtr Sample ID: 412944 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 18.39 mR/Std Qtr Sample ID: 420943 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 19.79 mR/Std Qtr Sample ID: 430290 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 21.01 mR/Std Qtr Sample Point 225 [ INDICATOR - SE @ 0.68 miles ]

TLD RING TLD_INNER Sample ID: 403371 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 21.04 mR/Std Qtr Sample ID: 412945 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 16.14 mR/Std Qtr Sample ID: 420944 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 18.78 mR/Std Qtr Sample ID: 430291 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 19.59 mR/Std Qtr Sample Point 226 [ INDICATOR - S @ 0.48 miles ]

TLD RING TLD_INNER Sample ID: 403372 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 18.31 mR/Std Qtr Sample ID: 412946 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 16.03 mR/Std Qtr Sample ID: 420945 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 18.35 mR/Std Qtr Sample ID: 430292 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 17.70 mR/Std Qtr Sample Point 227 [ INDICATOR - WSW @ 0.52 miles ]

TLD RING TLD_INNER Sample ID: 403373 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 18.61 mR/Std Qtr Sample ID: 412947 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 17.26 mR/Std Qtr Sample ID: 420946 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 17.01 mR/Std Qtr Sample ID: 430293 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 18.88 mR/Std Qtr Sample Point 228 [ INDICATOR - W @ 0.61 miles ]

TLD RING TLD_INNER Sample ID: 403374 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 19.36 mR/Std Qtr Sample ID: 412948 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 17.96 mR/Std Qtr Sample ID: 420947 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 16.97 mR/Std Qtr Sample ID: 430294 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 19.36 mR/Std Qtr Sample Point 229 [ INDICATOR - NW @ 0.84 miles ]

TLD RING TLD_INNER Sample ID: 403375 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 25.25 mR/Std Qtr Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 76 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter Sample Point 229 [ INDICATOR - NW @ 0.84 miles ]

TLD RING TLD_INNER Sample ID: 412949 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 22.69 mR/Std Qtr Sample ID: 420948 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 21.08 mR/Std Qtr Sample ID: 430295 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 22.90 mR/Std Qtr Sample Point 230 [ INDICATOR - N @ 4.37 miles ]

TLD RING TLD_OUTER Sample ID: 403376 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 13.82 mR/Std Qtr Sample ID: 412950 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 12.18 mR/Std Qtr Sample ID: 420949 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 11.68 mR/Std Qtr Sample ID: 430296 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 13.03 mR/Std Qtr Sample Point 231 [ INDICATOR - NNE @ 4.21 miles ]

TLD RING TLD_OUTER Sample ID: 403377 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 17.20 mR/Std Qtr Sample ID: 412951 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 15.95 mR/Std Qtr Sample ID: 420950 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 16.82 mR/Std Qtr Sample ID: 430297 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 20.24 mR/Std Qtr Sample Point 232 [ INDICATOR - NE @ 4.18 miles ]

TLD RING TLD_OUTER Sample ID: 403378 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 23.44 mR/Std Qtr Sample ID: 412952 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 21.71 mR/Std Qtr Sample ID: 420951 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 22.01 mR/Std Qtr Sample ID: 430298 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 27.22 mR/Std Qtr Sample Point 233 [ INDICATOR - ENE @ 3.95 miles ]

TLD RING TLD_OUTER Sample ID: 403379 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 16.35 mR/Std Qtr Sample ID: 412953 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 13.68 mR/Std Qtr Sample ID: 420952 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 13.04 mR/Std Qtr Sample ID: 430299 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 16.08 mR/Std Qtr Sample Point 234 [ INDICATOR - E @ 4.5 miles ]

TLD RING TLD_OUTER Sample ID: 403380 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 18.29 mR/Std Qtr Sample ID: 412954 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 15.99 mR/Std Qtr Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 77 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter Sample Point 234 [ INDICATOR - E @ 4.5 miles ]

TLD RING TLD_OUTER Sample ID: 420953 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 16.64 mR/Std Qtr Sample ID: 430300 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 19.38 mR/Std Qtr Sample Point 235 [ INDICATOR - ESE @ 4.07 miles ]

TLD RING TLD_OUTER Sample ID: 403381 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 17.94 mR/Std Qtr Sample ID: 412955 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 16.57 mR/Std Qtr Sample ID: 420954 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 15.73 mR/Std Qtr Sample ID: 430301 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 18.92 mR/Std Qtr Sample Point 236 [ INDICATOR - SE @ 4.25 miles ]

TLD RING TLD_OUTER Sample ID: 403382 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 23.09 mR/Std Qtr Sample ID: 412956 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 21.20 mR/Std Qtr Sample ID: 420955 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 19.52 mR/Std Qtr Sample ID: 430302 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 23.56 mR/Std Qtr Sample Point 237 [ INDICATOR - SSE @ 4.75 miles ]

TLD RING TLD_OUTER Sample ID: 403383 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 23.35 mR/Std Qtr Sample ID: 412957 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 22.16 mR/Std Qtr Sample ID: 420956 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 20.23 mR/Std Qtr Sample ID: 430303 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 24.01 mR/Std Qtr Sample Point 238 [ INDICATOR - S @ 4.02 miles ]

TLD RING TLD_OUTER Sample ID: 403384 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 18.55 mR/Std Qtr Sample ID: 412958 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 17.71 mR/Std Qtr Sample ID: 420957 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 15.86 mR/Std Qtr Sample ID: 430304 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 18.19 mR/Std Qtr Sample Point 239 [ INDICATOR - SSW @ 4.49 miles ]

TLD RING TLD_OUTER Sample ID: 403385 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 20.66 mR/Std Qtr Sample ID: 412959 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 17.04 mR/Std Qtr Sample ID: 420958 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 16.91 mR/Std Qtr Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 78 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter Sample Point 239 [ INDICATOR - SSW @ 4.49 miles ]

TLD RING TLD_OUTER Sample ID: 430305 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 20.02 mR/Std Qtr Sample Point 240 [ INDICATOR - SW @ 4.07 miles ]

TLD RING TLD_OUTER Sample ID: 403386 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 13.83 mR/Std Qtr Sample ID: 412960 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 11.47 mR/Std Qtr Sample ID: 420959 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 11.09 mR/Std Qtr Sample ID: 430306 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 14.05 mR/Std Qtr Sample Point 241 [ INDICATOR - WSW @ 4.58 miles ]

TLD RING TLD_OUTER Sample ID: 403387 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 13.55 mR/Std Qtr Sample ID: 412961 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 12.51 mR/Std Qtr Sample ID: 420960 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 11.98 mR/Std Qtr Sample ID: 430307 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 13.11 mR/Std Qtr Sample Point 242 [ INDICATOR - W @ 4.56 miles ]

TLD RING TLD_OUTER Sample ID: 403388 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 17.65 mR/Std Qtr Sample ID: 412962 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 16.62 mR/Std Qtr Sample ID: 420961 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 14.83 mR/Std Qtr Sample ID: 430308 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 17.78 mR/Std Qtr Sample Point 243 [ INDICATOR - WNW @ 4.39 miles ]

TLD RING TLD_OUTER Sample ID: 403389 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 16.66 mR/Std Qtr Sample ID: 412963 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 16.31 mR/Std Qtr Sample ID: 420962 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 14.46 mR/Std Qtr Sample ID: 430309 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 17.40 mR/Std Qtr Sample Point 244 [ INDICATOR - NW @ 4.02 miles ]

TLD RING TLD_OUTER Sample ID: 403390 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 20.41 mR/Std Qtr Sample ID: 412964 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 18.22 mR/Std Qtr Sample ID: 420963 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 18.55 mR/Std Qtr Sample ID: 430310 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 22.06 mR/Std Qtr Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 79 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter Sample Point 245 [ INDICATOR - NNW @ 4.01 miles ]

TLD RING TLD_OUTER Sample ID: 403391 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 17.22 mR/Std Qtr Sample ID: 412965 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 15.86 mR/Std Qtr Sample ID: 420964 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 13.62 mR/Std Qtr Sample ID: 430311 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 17.91 mR/Std Qtr Sample Point 246 [ INDICATOR - ENE @ 7.87 miles ]

TLD RING TLD_SPEC Sample ID: 403392 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 16.06 mR/Std Qtr Sample ID: 412966 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 14.36 mR/Std Qtr Sample ID: 420965 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 16.68 mR/Std Qtr Sample ID: 430312 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 16.70 mR/Std Qtr Sample Point 247 [ CONTROL - ESE @ 7.33 miles ]

TLD RING TLD_CTRL Sample ID: 403393 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 13.79 mR/Std Qtr Sample ID: 412967 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 12.05 mR/Std Qtr Sample ID: 420966 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 11.30 mR/Std Qtr Sample ID: 430313 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 13.97 mR/Std Qtr Sample Point 248 [ INDICATOR - S @ 6.54 miles ]

TLD RING TLD_SPEC Sample ID: 403394 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 16.09 mR/Std Qtr Sample ID: 412968 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 13.73 mR/Std Qtr Sample ID: 420967 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 11.88 mR/Std Qtr Sample ID: 430314 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 15.40 mR/Std Qtr Sample Point 249 [ INDICATOR - S @ 7.17 miles ]

TLD RING TLD_SPEC Sample ID: 403395 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 17.06 mR/Std Qtr Sample ID: 412969 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 18.08 mR/Std Qtr Sample ID: 420968 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 13.90 mR/Std Qtr Sample ID: 430315 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 16.68 mR/Std Qtr Sample Point 250 [ INDICATOR - WSW @ 10.4 miles ]

TLD RING TLD_SPEC Sample ID: 403396 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 17.46 mR/Std Qtr Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 80 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: TLD Concentration (Activity): mR/Standard Quarter Sample Point 250 [ INDICATOR - WSW @ 10.4 miles ]

TLD RING TLD_SPEC Sample ID: 412970 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 17.24 mR/Std Qtr Sample ID: 420969 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 15.11 mR/Std Qtr Sample ID: 430316 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 16.21 mR/Std Qtr Sample Point 251 [ CONTROL - WNW @ 9.72 miles ]

TLD RING TLD_CTRL Sample ID: 403397 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 18.40 mR/Std Qtr Sample ID: 412971 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 15.60 mR/Std Qtr Sample ID: 420970 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 15.28 mR/Std Qtr Sample ID: 430317 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 15.11 mR/Std Qtr Sample Point 255 [ INDICATOR - ENE @ 0.61 miles ]

TLD RING TLD_INNER Sample ID: 403398 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 21.38 mR/Std Qtr Sample ID: 412972 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 19.61 mR/Std Qtr Sample ID: 420971 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 20.70 mR/Std Qtr Sample ID: 430318 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 21.65 mR/Std Qtr Sample Point 256 [ INDICATOR - SSE @ 0.58 miles ]

TLD RING TLD_INNER Sample ID: 403399 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 21.04 mR/Std Qtr Sample ID: 412973 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 21.48 mR/Std Qtr Sample ID: 420972 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 19.95 mR/Std Qtr Sample ID: 430319 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 22.64 mR/Std Qtr Sample Point 258 [ INDICATOR TLD @ AIR CONTROL - W @ 9.84 miles ]

TLD RING TLD_SPEC Sample ID: 403400 Nuclide Activity Sample Dates: 12/17/2015 - 3/17/2016 21.64 mR/Std Qtr Sample ID: 412974 Nuclide Activity Sample Dates: 3/17/2016 - 6/16/2016 18.14 mR/Std Qtr Sample ID: 420973 Nuclide Activity Sample Dates: 6/16/2016 - 9/15/2016 16.87 mR/Std Qtr Sample ID: 430320 Nuclide Activity Sample Dates: 9/15/2016 - 12/15/2016 19.60 mR/Std Qtr Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 398621 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/6/2016 MIXEDBLV

<1.91E+01 0.00E+00 1.91E+01 Mn-54

<1.89E+01 0.00E+00 1.89E+01 Co-58

<5.28E+01 0.00E+00 5.28E+01 Fe-59 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 81 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 398621 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/6/2016 MIXEDBLV

<2.11E+01 0.00E+00 2.11E+01 Co-60

<3.29E+01 0.00E+00 3.29E+01 Zn-65

<3.73E+01 0.00E+00 3.73E+01 Zr-95

<2.37E+01 0.00E+00 2.37E+01 Nb-95

<1.97E+01 0.00E+00 1.97E+01 I-131

<2.35E+01 0.00E+00 2.35E+01 Cs-134

<2.55E+01 0.00E+00 2.55E+01 Cs-137

<2.07E+01 0.00E+00 2.07E+01 BaLa-140 1.50E+03 2.72E+02 2.03E+02 Be-7 2.87E+03 5.32E+02 3.06E+02 K-40 Sample ID: 400267 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/2/2016 MIXEDBLV

<1.50E+01 0.00E+00 1.50E+01 Mn-54

<1.72E+01 0.00E+00 1.72E+01 Co-58

<3.91E+01 0.00E+00 3.91E+01 Fe-59

<2.19E+01 0.00E+00 2.19E+01 Co-60

<4.36E+01 0.00E+00 4.36E+01 Zn-65

<3.73E+01 0.00E+00 3.73E+01 Zr-95

<2.09E+01 0.00E+00 2.09E+01 Nb-95

<1.97E+01 0.00E+00 1.97E+01 I-131

<2.59E+01 0.00E+00 2.59E+01 Cs-134

<2.31E+01 0.00E+00 2.31E+01 Cs-137

<2.06E+01 0.00E+00 2.06E+01 BaLa-140 1.17E+03 2.44E+02 2.21E+02 Be-7 2.59E+03 4.89E+02 2.90E+02 K-40 Sample ID: 402256 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/1/2016 MIXEDBLV

<2.94E+01 0.00E+00 2.94E+01 Mn-54

<2.69E+01 0.00E+00 2.69E+01 Co-58

<4.61E+01 0.00E+00 4.61E+01 Fe-59

<2.11E+01 0.00E+00 2.11E+01 Co-60

<6.28E+01 0.00E+00 6.28E+01 Zn-65

<6.43E+01 0.00E+00 6.43E+01 Zr-95

<3.50E+01 0.00E+00 3.50E+01 Nb-95

<2.45E+01 0.00E+00 2.45E+01 I-131

<2.92E+01 0.00E+00 2.92E+01 Cs-134

<2.41E+01 0.00E+00 2.41E+01 Cs-137

<3.48E+01 0.00E+00 3.48E+01 BaLa-140 1.80E+03 3.43E+02 2.81E+02 Be-7 2.37E+03 5.24E+02 3.10E+02 K-40 Sample ID: 406014 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/5/2016 MIXEDBLV

<7.52E+00 0.00E+00 7.52E+00 Mn-54

<8.72E+00 0.00E+00 8.72E+00 Co-58

<2.19E+01 0.00E+00 2.19E+01 Fe-59

<8.71E+00 0.00E+00 8.71E+00 Co-60

<1.91E+01 0.00E+00 1.91E+01 Zn-65

<1.48E+01 0.00E+00 1.48E+01 Zr-95

<1.03E+01 0.00E+00 1.03E+01 Nb-95

<3.36E+01 0.00E+00 3.36E+01 I-131

<9.93E+00 0.00E+00 9.93E+00 Cs-134

<8.82E+00 0.00E+00 8.82E+00 Cs-137

<1.91E+01 0.00E+00 1.91E+01 BaLa-140 5.31E+02 1.11E+02 1.34E+02 Be-7 3.68E+03 3.81E+02 1.11E+02 K-40 Sample ID: 409564 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/3/2016 MIXEDBLV

<3.21E+01 0.00E+00 3.21E+01 Mn-54

<2.62E+01 0.00E+00 2.62E+01 Co-58

<5.97E+01 0.00E+00 5.97E+01 Fe-59

<3.06E+01 0.00E+00 3.06E+01 Co-60

<6.08E+01 0.00E+00 6.08E+01 Zn-65

<4.74E+01 0.00E+00 4.75E+01 Zr-95

<2.94E+01 0.00E+00 2.94E+01 Nb-95

<1.77E+01 0.00E+00 1.77E+01 I-131

<3.12E+01 0.00E+00 3.12E+01 Cs-134

<2.91E+01 0.00E+00 2.91E+01 Cs-137 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 82 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 409564 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/3/2016 MIXEDBLV

<4.14E+01 0.00E+00 4.14E+01 BaLa-140 5.24E+02 2.18E+02 2.87E+02 Be-7 3.29E+03 6.64E+02 4.67E+02 K-40 Sample ID: 412034 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/1/2016 MIXEDBLV

<1.64E+01 0.00E+00 1.64E+01 Mn-54

<1.34E+01 0.00E+00 1.34E+01 Co-58

<2.66E+01 0.00E+00 2.66E+01 Fe-59

<1.86E+01 0.00E+00 1.86E+01 Co-60

<3.82E+01 0.00E+00 3.82E+01 Zn-65

<3.20E+01 0.00E+00 3.20E+01 Zr-95

<1.72E+01 0.00E+00 1.72E+01 Nb-95

<1.15E+01 0.00E+00 1.15E+01 I-131

<1.84E+01 0.00E+00 1.84E+01 Cs-134

<1.65E+01 0.00E+00 1.65E+01 Cs-137

<1.23E+01 0.00E+00 1.23E+01 BaLa-140 7.76E+02 1.84E+02 1.94E+02 Be-7 3.82E+03 5.64E+02 2.59E+02 K-40 Sample ID: 414419 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/6/2016 MIXEDBLV

<1.81E+01 0.00E+00 1.81E+01 Mn-54

<1.02E+01 0.00E+00 1.02E+01 Co-58

<3.76E+01 0.00E+00 3.76E+01 Fe-59

<2.55E+01 0.00E+00 2.55E+01 Co-60

<4.06E+01 0.00E+00 4.06E+01 Zn-65

<2.73E+01 0.00E+00 2.73E+01 Zr-95

<1.83E+01 0.00E+00 1.83E+01 Nb-95

<1.50E+01 0.00E+00 1.50E+01 I-131

<2.17E+01 0.00E+00 2.17E+01 Cs-134

<1.62E+01 0.00E+00 1.62E+01 Cs-137

<1.30E+01 0.00E+00 1.30E+01 BaLa-140 5.76E+02 1.61E+02 1.80E+02 Be-7 3.57E+03 5.57E+02 2.94E+02 K-40 Sample ID: 417254 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/2/2016 MIXEDBLV

<1.67E+01 0.00E+00 1.67E+01 Mn-54

<1.64E+01 0.00E+00 1.64E+01 Co-58

<3.90E+01 0.00E+00 3.90E+01 Fe-59

<2.45E+01 0.00E+00 2.45E+01 Co-60

<4.96E+01 0.00E+00 4.96E+01 Zn-65

<3.21E+01 0.00E+00 3.21E+01 Zr-95

<1.64E+01 0.00E+00 1.64E+01 Nb-95

<1.82E+01 0.00E+00 1.82E+01 I-131

<2.05E+01 0.00E+00 2.05E+01 Cs-134

<1.90E+01 0.00E+00 1.90E+01 Cs-137

<1.31E+01 0.00E+00 1.31E+01 BaLa-140 5.81E+02 1.83E+02 2.28E+02 Be-7 3.79E+03 5.79E+02 2.44E+02 K-40 Sample ID: 419431 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/7/2016 MIXEDBLV

<1.56E+01 0.00E+00 1.56E+01 Mn-54

<1.76E+01 0.00E+00 1.76E+01 Co-58

<2.95E+01 0.00E+00 2.95E+01 Fe-59

<1.80E+01 0.00E+00 1.80E+01 Co-60

<4.96E+01 0.00E+00 4.96E+01 Zn-65

<3.07E+01 0.00E+00 3.07E+01 Zr-95

<1.49E+01 0.00E+00 1.49E+01 Nb-95

<2.36E+01 0.00E+00 2.36E+01 I-131

<2.26E+01 0.00E+00 2.26E+01 Cs-134

<1.81E+01 0.00E+00 1.81E+01 Cs-137

<1.73E+01 0.00E+00 1.73E+01 BaLa-140 7.23E+02 1.91E+02 2.06E+02 Be-7 2.37E+03 4.29E+02 1.60E+02 K-40 Sample ID: 422483 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/4/2016 MIXEDBLV

<2.40E+01 0.00E+00 2.40E+01 Mn-54

<2.12E+01 0.00E+00 2.12E+01 Co-58 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 83 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 200 [ INDICATOR - NNE @ 0.63 miles ]

Sample ID: 422483 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/4/2016 MIXEDBLV

<3.90E+01 0.00E+00 3.90E+01 Fe-59

<2.16E+01 0.00E+00 2.16E+01 Co-60

<3.75E+01 0.00E+00 3.75E+01 Zn-65

<2.97E+01 0.00E+00 2.97E+01 Zr-95

<1.95E+01 0.00E+00 1.95E+01 Nb-95

<1.97E+01 0.00E+00 1.97E+01 I-131

<2.12E+01 0.00E+00 2.12E+01 Cs-134

<2.61E+01 0.00E+00 2.61E+01 Cs-137

<2.12E+01 0.00E+00 2.12E+01 BaLa-140 1.10E+03 2.30E+02 1.84E+02 Be-7 2.51E+03 5.03E+02 3.39E+02 K-40 Sample ID: 425976 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/1/2016 MIXEDBLV

<1.94E+01 0.00E+00 1.94E+01 Mn-54

<1.53E+01 0.00E+00 1.53E+01 Co-58

<4.03E+01 0.00E+00 4.03E+01 Fe-59

<2.38E+01 0.00E+00 2.38E+01 Co-60

<3.92E+01 0.00E+00 3.92E+01 Zn-65

<2.79E+01 0.00E+00 2.79E+01 Zr-95

<1.90E+01 0.00E+00 1.90E+01 Nb-95

<1.67E+01 0.00E+00 1.67E+01 I-131

<1.83E+01 0.00E+00 1.83E+01 Cs-134

<2.13E+01 0.00E+00 2.13E+01 Cs-137

<2.49E+01 0.00E+00 2.49E+01 BaLa-140 6.68E+02 1.84E+02 2.08E+02 Be-7 2.45E+03 4.88E+02 4.11E+02 K-40 Sample ID: 428478 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/6/2016 MIXEDBLV

<1.65E+01 0.00E+00 1.65E+01 Mn-54

<1.53E+01 0.00E+00 1.53E+01 Co-58

<4.49E+01 0.00E+00 4.49E+01 Fe-59

<1.73E+01 0.00E+00 1.73E+01 Co-60

<4.19E+01 0.00E+00 4.19E+01 Zn-65

<3.14E+01 0.00E+00 3.14E+01 Zr-95

<1.37E+01 0.00E+00 1.37E+01 Nb-95

<1.85E+01 0.00E+00 1.85E+01 I-131

<2.70E+01 0.00E+00 2.70E+01 Cs-134

<2.01E+01 0.00E+00 2.01E+01 Cs-137

<2.89E+01 0.00E+00 2.89E+01 BaLa-140 8.45E+02 1.94E+02 1.74E+02 Be-7 3.55E+03 5.83E+02 3.20E+02 K-40 Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 398622 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/6/2016 MIXEDBLV

<1.04E+01 0.00E+00 1.04E+01 Mn-54

<1.10E+01 0.00E+00 1.10E+01 Co-58

<2.23E+01 0.00E+00 2.23E+01 Fe-59

<9.44E+00 0.00E+00 9.44E+00 Co-60

<2.28E+01 0.00E+00 2.28E+01 Zn-65

<1.83E+01 0.00E+00 1.83E+01 Zr-95

<1.47E+01 0.00E+00 1.47E+01 Nb-95

<4.08E+01 0.00E+00 4.08E+01 I-131

<1.16E+01 0.00E+00 1.16E+01 Cs-134

<1.13E+01 0.00E+00 1.13E+01 Cs-137

<2.83E+01 0.00E+00 2.83E+01 BaLa-140 1.75E+03 2.07E+02 1.44E+02 Be-7 2.76E+03 3.05E+02 1.39E+02 K-40 Sample ID: 400268 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/2/2016 MIXEDBLV

<1.96E+01 0.00E+00 1.96E+01 Mn-54

<1.95E+01 0.00E+00 1.95E+01 Co-58

<4.07E+01 0.00E+00 4.07E+01 Fe-59

<1.77E+01 0.00E+00 1.77E+01 Co-60

<4.29E+01 0.00E+00 4.29E+01 Zn-65

<4.46E+01 0.00E+00 4.46E+01 Zr-95

<1.81E+01 0.00E+00 1.81E+01 Nb-95 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 84 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 400268 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/2/2016 MIXEDBLV

<2.13E+01 0.00E+00 2.13E+01 I-131

<2.83E+01 0.00E+00 2.83E+01 Cs-134

<3.06E+01 0.00E+00 3.06E+01 Cs-137

<2.04E+01 0.00E+00 2.04E+01 BaLa-140 1.90E+03 3.19E+02 2.58E+02 Be-7 2.28E+03 4.92E+02 4.38E+02 K-40 Sample ID: 402257 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/1/2016 MIXEDBLV

<2.27E+01 0.00E+00 2.27E+01 Mn-54

<2.72E+01 0.00E+00 2.72E+01 Co-58

<6.17E+01 0.00E+00 6.17E+01 Fe-59

<3.02E+01 0.00E+00 3.02E+01 Co-60

<9.07E+01 0.00E+00 9.07E+01 Zn-65

<4.18E+01 0.00E+00 4.18E+01 Zr-95

<2.87E+01 0.00E+00 2.87E+01 Nb-95

<3.09E+01 0.00E+00 3.09E+01 I-131

<3.91E+01 0.00E+00 3.91E+01 Cs-134

<3.67E+01 0.00E+00 3.67E+01 Cs-137

<2.98E+01 0.00E+00 2.98E+01 BaLa-140 2.36E+03 4.17E+02 3.15E+02 Be-7 3.81E+03 7.31E+02 4.63E+02 K-40 Sample ID: 406015 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/5/2016 MIXEDBLV

<2.20E+01 0.00E+00 2.20E+01 Mn-54

<2.00E+01 0.00E+00 2.00E+01 Co-58

<4.76E+01 0.00E+00 4.76E+01 Fe-59

<2.31E+01 0.00E+00 2.31E+01 Co-60

<5.13E+01 0.00E+00 5.13E+01 Zn-65

<3.47E+01 0.00E+00 3.47E+01 Zr-95

<2.40E+01 0.00E+00 2.40E+01 Nb-95

<1.93E+01 0.00E+00 1.93E+01 I-131

<3.14E+01 0.00E+00 3.14E+01 Cs-134

<2.44E+01 0.00E+00 2.44E+01 Cs-137

<2.08E+01 0.00E+00 2.08E+01 BaLa-140 2.99E+02 1.69E+02 2.46E+02 Be-7 4.30E+03 6.74E+02 3.41E+02 K-40 Sample ID: 409565 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/3/2016 MIXEDBLV

<1.95E+01 0.00E+00 1.95E+01 Mn-54

<1.72E+01 0.00E+00 1.72E+01 Co-58

<3.62E+01 0.00E+00 3.62E+01 Fe-59

<1.93E+01 0.00E+00 1.93E+01 Co-60

<5.66E+01 0.00E+00 5.66E+01 Zn-65

<2.59E+01 0.00E+00 2.59E+01 Zr-95

<1.95E+01 0.00E+00 1.95E+01 Nb-95

<1.89E+01 0.00E+00 1.89E+01 I-131

<2.69E+01 0.00E+00 2.69E+01 Cs-134

<2.99E+01 0.00E+00 2.99E+01 Cs-137

<2.71E+01 0.00E+00 2.71E+01 BaLa-140 6.74E+02 2.17E+02 2.71E+02 Be-7 2.43E+03 4.77E+02 2.54E+02 K-40 Sample ID: 412035 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/1/2016 MIXEDBLV

<2.38E+01 0.00E+00 2.38E+01 Mn-54

<1.75E+01 0.00E+00 1.75E+01 Co-58

<2.57E+01 0.00E+00 2.57E+01 Fe-59

<1.14E+01 0.00E+00 1.14E+01 Co-60

<3.53E+01 0.00E+00 3.53E+01 Zn-65

<3.77E+01 0.00E+00 3.77E+01 Zr-95

<1.83E+01 0.00E+00 1.83E+01 Nb-95

<1.55E+01 0.00E+00 1.55E+01 I-131

<2.47E+01 0.00E+00 2.47E+01 Cs-134

<2.68E+01 0.00E+00 2.68E+01 Cs-137

<1.44E+01 0.00E+00 1.44E+01 BaLa-140 6.07E+02 1.83E+02 2.17E+02 Be-7 2.67E+03 4.89E+02 3.21E+02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 85 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 414420 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/6/2016 MIXEDBLV

<2.30E+01 0.00E+00 2.30E+01 Mn-54

<2.17E+01 0.00E+00 2.17E+01 Co-58

<3.38E+01 0.00E+00 3.38E+01 Fe-59

<2.60E+01 0.00E+00 2.60E+01 Co-60

<5.09E+01 0.00E+00 5.09E+01 Zn-65

<2.32E+01 0.00E+00 2.32E+01 Zr-95

<2.58E+01 0.00E+00 2.58E+01 Nb-95

<2.26E+01 0.00E+00 2.26E+01 I-131

<2.48E+01 0.00E+00 2.48E+01 Cs-134

<3.26E+01 0.00E+00 3.26E+01 Cs-137

<3.17E+01 0.00E+00 3.17E+01 BaLa-140 5.11E+02 2.26E+02 3.21E+02 Be-7 2.91E+03 5.20E+02 5.02E+01 K-40 Sample ID: 417255 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/2/2016 MIXEDBLV

<2.60E+01 0.00E+00 2.60E+01 Mn-54

<2.29E+01 0.00E+00 2.29E+01 Co-58

<3.86E+01 0.00E+00 3.86E+01 Fe-59

<2.21E+01 0.00E+00 2.21E+01 Co-60

<4.39E+01 0.00E+00 4.39E+01 Zn-65

<3.57E+01 0.00E+00 3.57E+01 Zr-95

<1.42E+01 0.00E+00 1.42E+01 Nb-95

<1.88E+01 0.00E+00 1.88E+01 I-131

<2.85E+01 0.00E+00 2.85E+01 Cs-134

<2.59E+01 0.00E+00 2.59E+01 Cs-137

<2.46E+01 0.00E+00 2.46E+01 BaLa-140 4.98E+02 2.01E+02 2.77E+02 Be-7 2.45E+03 4.52E+02 4.58E+01 K-40 Sample ID: 419432 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/7/2016 MIXEDBLV

<1.81E+01 0.00E+00 1.81E+01 Mn-54

<1.74E+01 0.00E+00 1.74E+01 Co-58

<4.07E+01 0.00E+00 4.07E+01 Fe-59

<1.78E+01 0.00E+00 1.78E+01 Co-60

<5.06E+01 0.00E+00 5.06E+01 Zn-65

<3.03E+01 0.00E+00 3.03E+01 Zr-95

<2.19E+01 0.00E+00 2.19E+01 Nb-95

<2.29E+01 0.00E+00 2.29E+01 I-131

<2.40E+01 0.00E+00 2.40E+01 Cs-134

<2.63E+01 0.00E+00 2.63E+01 Cs-137

<3.14E+01 0.00E+00 3.14E+01 BaLa-140 8.36E+02 2.10E+02 2.14E+02 Be-7 3.10E+03 5.51E+02 3.48E+02 K-40 Sample ID: 422484 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/4/2016 MIXEDBLV

<2.37E+01 0.00E+00 2.37E+01 Mn-54

<2.79E+01 0.00E+00 2.79E+01 Co-58

<4.40E+01 0.00E+00 4.40E+01 Fe-59

<2.02E+01 0.00E+00 2.02E+01 Co-60

<6.00E+01 0.00E+00 6.00E+01 Zn-65

<3.61E+01 0.00E+00 3.61E+01 Zr-95

<2.68E+01 0.00E+00 2.68E+01 Nb-95

<2.31E+01 0.00E+00 2.31E+01 I-131

<2.67E+01 0.00E+00 2.67E+01 Cs-134

<3.41E+01 0.00E+00 3.41E+01 Cs-137

<3.31E+01 0.00E+00 3.31E+01 BaLa-140

<3.63E+02 0.00E+00 3.63E+02 Be-7 3.25E+03 6.01E+02 2.31E+02 K-40 Sample ID: 425977 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/1/2016 MIXEDBLV

<1.55E+01 0.00E+00 1.55E+01 Mn-54

<1.27E+01 0.00E+00 1.27E+01 Co-58

<3.49E+01 0.00E+00 3.49E+01 Fe-59

<2.14E+01 0.00E+00 2.14E+01 Co-60

<2.30E+01 0.00E+00 2.30E+01 Zn-65

<2.79E+01 0.00E+00 2.79E+01 Zr-95

<1.75E+01 0.00E+00 1.75E+01 Nb-95 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 86 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 201 [ INDICATOR - NE @ 0.53 miles ]

Sample ID: 425977 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/1/2016 MIXEDBLV

<1.43E+01 0.00E+00 1.43E+01 I-131

<2.21E+01 0.00E+00 2.21E+01 Cs-134

<2.08E+01 0.00E+00 2.08E+01 Cs-137

<1.94E+01 0.00E+00 1.94E+01 BaLa-140 6.13E+02 1.76E+02 2.08E+02 Be-7 2.21E+03 4.42E+02 3.61E+02 K-40 Sample ID: 428479 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/6/2016 MIXEDBLV

<2.46E+01 0.00E+00 2.46E+01 Mn-54

<2.28E+01 0.00E+00 2.28E+01 Co-58

<5.21E+01 0.00E+00 5.21E+01 Fe-59

<3.38E+01 0.00E+00 3.38E+01 Co-60

<3.86E+01 0.00E+00 3.86E+01 Zn-65

<4.21E+01 0.00E+00 4.21E+01 Zr-95

<2.04E+01 0.00E+00 2.04E+01 Nb-95

<2.77E+01 0.00E+00 2.77E+01 I-131

<3.06E+01 0.00E+00 3.06E+01 Cs-134

<3.19E+01 0.00E+00 3.19E+01 Cs-137

<3.68E+01 0.00E+00 3.68E+01 BaLa-140 7.48E+02 2.53E+02 3.10E+02 Be-7 2.70E+03 5.87E+02 3.78E+02 K-40 Sample Point 222 [ INDICATOR - N @ 0.71 miles ]

Sample ID: 398623 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/6/2016 MIXEDBLV

<2.12E+01 0.00E+00 2.12E+01 Mn-54

<2.78E+01 0.00E+00 2.78E+01 Co-58

<4.76E+01 0.00E+00 4.76E+01 Fe-59

<3.07E+01 0.00E+00 3.07E+01 Co-60

<3.01E+01 0.00E+00 3.01E+01 Zn-65

<4.39E+01 0.00E+00 4.39E+01 Zr-95

<2.31E+01 0.00E+00 2.31E+01 Nb-95

<2.63E+01 0.00E+00 2.63E+01 I-131

<3.16E+01 0.00E+00 3.16E+01 Cs-134

<3.25E+01 0.00E+00 3.25E+01 Cs-137

<2.77E+01 0.00E+00 2.77E+01 BaLa-140 8.89E+02 2.84E+02 3.53E+02 Be-7 4.19E+03 7.39E+02 3.88E+02 K-40 Sample ID: 400269 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/2/2016 MIXEDBLV

<2.69E+01 0.00E+00 2.69E+01 Mn-54

<4.04E+01 0.00E+00 4.04E+01 Co-58

<5.48E+01 0.00E+00 5.48E+01 Fe-59

<4.26E+01 0.00E+00 4.26E+01 Co-60

<8.51E+01 0.00E+00 8.51E+01 Zn-65

<6.72E+01 0.00E+00 6.72E+01 Zr-95

<4.85E+01 0.00E+00 4.85E+01 Nb-95

<3.84E+01 0.00E+00 3.84E+01 I-131

<3.77E+01 0.00E+00 3.77E+01 Cs-134

<3.06E+01 0.00E+00 3.06E+01 Cs-137

<3.18E+01 0.00E+00 3.18E+01 BaLa-140 5.20E+02 2.84E+02 4.04E+02 Be-7 2.44E+03 5.97E+02 8.83E+01 K-40 Sample ID: 402258 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/1/2016 MIXEDBLV

<3.54E+01 0.00E+00 3.54E+01 Mn-54

<2.81E+01 0.00E+00 2.81E+01 Co-58

<7.97E+01 0.00E+00 7.97E+01 Fe-59

<3.19E+01 0.00E+00 3.19E+01 Co-60

<9.95E+01 0.00E+00 9.95E+01 Zn-65

<4.86E+01 0.00E+00 4.86E+01 Zr-95

<3.38E+01 0.00E+00 3.38E+01 Nb-95

<3.49E+01 0.00E+00 3.49E+01 I-131

<3.98E+01 0.00E+00 3.98E+01 Cs-134

<3.63E+01 0.00E+00 3.63E+01 Cs-137

<5.74E+01 0.00E+00 5.74E+01 BaLa-140 8.07E+02 3.51E+02 4.77E+02 Be-7 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 87 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 222 [ INDICATOR - N @ 0.71 miles ]

Sample ID: 402258 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/1/2016 MIXEDBLV 1.69E+03 6.09E+02 6.64E+02 K-40 Sample ID: 406016 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/5/2016 MIXEDBLV

<1.56E+01 0.00E+00 1.56E+01 Mn-54

<1.25E+01 0.00E+00 1.25E+01 Co-58

<2.85E+01 0.00E+00 2.85E+01 Fe-59

<1.41E+01 0.00E+00 1.41E+01 Co-60

<3.43E+01 0.00E+00 3.43E+01 Zn-65

<3.27E+01 0.00E+00 3.27E+01 Zr-95

<1.72E+01 0.00E+00 1.72E+01 Nb-95

<1.43E+01 0.00E+00 1.43E+01 I-131

<1.09E+01 0.00E+00 1.09E+01 Cs-134

<1.86E+01 0.00E+00 1.86E+01 Cs-137

<1.55E+01 0.00E+00 1.55E+01 BaLa-140 2.25E+02 1.13E+02 1.56E+02 Be-7 3.47E+03 5.52E+02 3.71E+02 K-40 Sample ID: 409566 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/3/2016 MIXEDBLV

<2.10E+01 0.00E+00 2.10E+01 Mn-54

<2.21E+01 0.00E+00 2.21E+01 Co-58

<4.00E+01 0.00E+00 4.00E+01 Fe-59

<2.33E+01 0.00E+00 2.33E+01 Co-60

<6.27E+01 0.00E+00 6.27E+01 Zn-65

<3.06E+01 0.00E+00 3.06E+01 Zr-95

<2.35E+01 0.00E+00 2.35E+01 Nb-95

<2.58E+01 0.00E+00 2.58E+01 I-131

<2.65E+01 0.00E+00 2.65E+01 Cs-134

<2.82E+01 0.00E+00 2.82E+01 Cs-137

<2.52E+01 0.00E+00 2.52E+01 BaLa-140 2.87E+02 1.70E+02 2.44E+02 Be-7 2.80E+03 5.79E+02 3.95E+02 K-40 Sample ID: 412036 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/1/2016 MIXEDBLV

<1.84E+01 0.00E+00 1.84E+01 Mn-54

<1.82E+01 0.00E+00 1.82E+01 Co-58

<3.71E+01 0.00E+00 3.71E+01 Fe-59

<1.72E+01 0.00E+00 1.72E+01 Co-60

<4.42E+01 0.00E+00 4.42E+01 Zn-65

<4.13E+01 0.00E+00 4.13E+01 Zr-95

<2.23E+01 0.00E+00 2.23E+01 Nb-95

<1.96E+01 0.00E+00 1.96E+01 I-131

<1.86E+01 0.00E+00 1.86E+01 Cs-134

<2.08E+01 0.00E+00 2.08E+01 Cs-137

<1.48E+01 0.00E+00 1.48E+01 BaLa-140 2.44E+02 1.15E+02 1.48E+02 Be-7 2.74E+03 4.93E+02 2.69E+02 K-40 Sample ID: 414421 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/6/2016 MIXEDBLV

<1.54E+01 0.00E+00 1.54E+01 Mn-54

<1.51E+01 0.00E+00 1.51E+01 Co-58

<3.64E+01 0.00E+00 3.64E+01 Fe-59

<1.17E+01 0.00E+00 1.17E+01 Co-60

<3.89E+01 0.00E+00 3.89E+01 Zn-65

<3.62E+01 0.00E+00 3.62E+01 Zr-95

<1.71E+01 0.00E+00 1.71E+01 Nb-95

<1.55E+01 0.00E+00 1.55E+01 I-131

<2.54E+01 0.00E+00 2.54E+01 Cs-134

<1.77E+01 0.00E+00 1.77E+01 Cs-137

<1.42E+01 0.00E+00 1.42E+01 BaLa-140 3.66E+02 1.67E+02 2.33E+02 Be-7 2.13E+03 4.21E+02 2.26E+02 K-40 Sample ID: 417256 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/2/2016 MIXEDBLV

<2.85E+01 0.00E+00 2.85E+01 Mn-54

<2.02E+01 0.00E+00 2.02E+01 Co-58

<4.93E+01 0.00E+00 4.93E+01 Fe-59

<6.21E+00 0.00E+00 6.21E+00 Co-60 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 88 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 222 [ INDICATOR - N @ 0.71 miles ]

Sample ID: 417256 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/2/2016 MIXEDBLV

<6.63E+01 0.00E+00 6.63E+01 Zn-65

<5.03E+01 0.00E+00 5.03E+01 Zr-95

<2.56E+01 0.00E+00 2.56E+01 Nb-95

<2.03E+01 0.00E+00 2.03E+01 I-131

<3.20E+01 0.00E+00 3.20E+01 Cs-134

<3.07E+01 0.00E+00 3.07E+01 Cs-137

<3.35E+01 0.00E+00 3.35E+01 BaLa-140 1.21E+03 3.25E+02 3.85E+02 Be-7 2.77E+03 6.05E+02 4.64E+02 K-40 Sample ID: 419433 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/7/2016 MIXEDBLV

<2.50E+01 0.00E+00 2.50E+01 Mn-54

<2.79E+01 0.00E+00 2.79E+01 Co-58

<2.83E+01 0.00E+00 2.83E+01 Fe-59

<2.44E+01 0.00E+00 2.44E+01 Co-60

<5.69E+01 0.00E+00 5.69E+01 Zn-65

<3.97E+01 0.00E+00 3.97E+01 Zr-95

<2.64E+01 0.00E+00 2.64E+01 Nb-95

<2.58E+01 0.00E+00 2.58E+01 I-131

<2.50E+01 0.00E+00 2.50E+01 Cs-134

<2.41E+01 0.00E+00 2.41E+01 Cs-137

<3.16E+01 0.00E+00 3.16E+01 BaLa-140 6.32E+02 2.27E+02 2.95E+02 Be-7 3.26E+03 6.11E+02 4.54E+02 K-40 Sample ID: 422485 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/4/2016 MIXEDBLV

<2.71E+01 0.00E+00 2.71E+01 Mn-54

<2.57E+01 0.00E+00 2.57E+01 Co-58

<3.61E+01 0.00E+00 3.61E+01 Fe-59

<3.26E+01 0.00E+00 3.26E+01 Co-60

<6.59E+01 0.00E+00 6.59E+01 Zn-65

<2.75E+01 0.00E+00 2.75E+01 Zr-95

<2.37E+01 0.00E+00 2.37E+01 Nb-95

<2.49E+01 0.00E+00 2.49E+01 I-131

<3.16E+01 0.00E+00 3.16E+01 Cs-134

<2.53E+01 0.00E+00 2.53E+01 Cs-137

<3.31E+01 0.00E+00 3.31E+01 BaLa-140 4.09E+02 1.80E+02 2.33E+02 Be-7 2.92E+03 5.85E+02 3.55E+02 K-40 Sample ID: 425978 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/1/2016 MIXEDBLV

<2.63E+01 0.00E+00 2.63E+01 Mn-54

<1.88E+01 0.00E+00 1.88E+01 Co-58

<3.42E+01 0.00E+00 3.42E+01 Fe-59

<1.98E+01 0.00E+00 1.98E+01 Co-60

<4.21E+01 0.00E+00 4.21E+01 Zn-65

<3.75E+01 0.00E+00 3.75E+01 Zr-95

<2.27E+01 0.00E+00 2.27E+01 Nb-95

<2.26E+01 0.00E+00 2.26E+01 I-131

<2.26E+01 0.00E+00 2.26E+01 Cs-134

<2.40E+01 0.00E+00 2.40E+01 Cs-137

<2.50E+01 0.00E+00 2.50E+01 BaLa-140 6.52E+02 2.10E+02 2.57E+02 Be-7 1.86E+03 4.44E+02 3.70E+02 K-40 Sample ID: 428480 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/6/2016 MIXEDBLV

<3.01E+01 0.00E+00 3.01E+01 Mn-54

<3.36E+01 0.00E+00 3.36E+01 Co-58

<5.17E+01 0.00E+00 5.17E+01 Fe-59

<2.88E+01 0.00E+00 2.88E+01 Co-60

<7.62E+01 0.00E+00 7.62E+01 Zn-65

<5.81E+01 0.00E+00 5.81E+01 Zr-95

<3.69E+01 0.00E+00 3.69E+01 Nb-95

<3.13E+01 0.00E+00 3.13E+01 I-131

<4.18E+01 0.00E+00 4.18E+01 Cs-134

<3.45E+01 0.00E+00 3.45E+01 Cs-137

<4.74E+01 0.00E+00 4.74E+01 BaLa-140 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 89 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 222 [ INDICATOR - N @ 0.71 miles ]

Sample ID: 428480 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/6/2016 MIXEDBLV 6.44E+02 2.80E+02 3.71E+02 Be-7 2.26E+03 6.81E+02 7.23E+02 K-40 Sample Point 226 [ INDICATOR - S @ 0.48 miles ]

Sample ID: 398624 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/6/2016 MIXEDBLV

<2.08E+01 0.00E+00 2.08E+01 Mn-54

<1.64E+01 0.00E+00 1.64E+01 Co-58

<4.16E+01 0.00E+00 4.16E+01 Fe-59

<1.74E+01 0.00E+00 1.74E+01 Co-60

<4.90E+01 0.00E+00 4.90E+01 Zn-65

<2.84E+01 0.00E+00 2.84E+01 Zr-95

<1.75E+01 0.00E+00 1.75E+01 Nb-95

<2.02E+01 0.00E+00 2.02E+01 I-131

<1.86E+01 0.00E+00 1.86E+01 Cs-134

<2.02E+01 0.00E+00 2.02E+01 Cs-137

<2.22E+01 0.00E+00 2.22E+01 BaLa-140 9.42E+02 2.15E+02 2.11E+02 Be-7 4.27E+03 6.41E+02 2.01E+02 K-40 Sample ID: 400270 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/2/2016 MIXEDBLV

<2.21E+01 0.00E+00 2.21E+01 Mn-54

<1.86E+01 0.00E+00 1.86E+01 Co-58

<4.24E+01 0.00E+00 4.24E+01 Fe-59

<2.05E+01 0.00E+00 2.05E+01 Co-60

<4.95E+01 0.00E+00 4.95E+01 Zn-65

<3.04E+01 0.00E+00 3.04E+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

<2.48E+01 0.00E+00 2.48E+01 Cs-134

<1.71E+01 0.00E+00 1.71E+01 Cs-137

<2.98E+01 0.00E+00 2.98E+01 BaLa-140 9.94E+02 2.37E+02 2.48E+02 Be-7 3.98E+03 6.50E+02 4.11E+02 K-40 Sample ID: 402259 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/1/2016 MIXEDBLV

<2.49E+01 0.00E+00 2.49E+01 Mn-54

<3.04E+01 0.00E+00 3.04E+01 Co-58

<5.23E+01 0.00E+00 5.23E+01 Fe-59

<1.90E+01 0.00E+00 1.90E+01 Co-60

<5.39E+01 0.00E+00 5.39E+01 Zn-65

<3.96E+01 0.00E+00 3.96E+01 Zr-95

<2.67E+01 0.00E+00 2.67E+01 Nb-95

<2.92E+01 0.00E+00 2.92E+01 I-131

<3.73E+01 0.00E+00 3.73E+01 Cs-134

<3.10E+01 0.00E+00 3.10E+01 Cs-137

<3.96E+01 0.00E+00 3.96E+01 BaLa-140 1.02E+03 3.33E+02 4.26E+02 Be-7 4.79E+03 8.35E+02 4.19E+02 K-40 Sample ID: 406017 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/5/2016 MIXEDBLV

<2.13E+01 0.00E+00 2.13E+01 Mn-54

<1.56E+01 0.00E+00 1.56E+01 Co-58

<3.73E+01 0.00E+00 3.73E+01 Fe-59

<2.20E+01 0.00E+00 2.20E+01 Co-60

<4.85E+01 0.00E+00 4.85E+01 Zn-65

<3.06E+01 0.00E+00 3.06E+01 Zr-95

<1.76E+01 0.00E+00 1.76E+01 Nb-95

<1.76E+01 0.00E+00 1.76E+01 I-131

<2.39E+01 0.00E+00 2.39E+01 Cs-134

<1.46E+01 0.00E+00 1.46E+01 Cs-137

<1.64E+01 0.00E+00 1.64E+01 BaLa-140 3.84E+02 1.61E+02 2.24E+02 Be-7 4.68E+03 6.38E+02 3.78E+01 K-40 Sample ID: 409567 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/3/2016 MIXEDBLV

<2.08E+01 0.00E+00 2.08E+01 Mn-54 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 90 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 226 [ INDICATOR - S @ 0.48 miles ]

Sample ID: 409567 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/3/2016 MIXEDBLV

<2.13E+01 0.00E+00 2.13E+01 Co-58

<4.66E+01 0.00E+00 4.66E+01 Fe-59

<2.26E+01 0.00E+00 2.26E+01 Co-60

<4.43E+01 0.00E+00 4.43E+01 Zn-65

<2.66E+01 0.00E+00 2.66E+01 Zr-95

<1.90E+01 0.00E+00 1.90E+01 Nb-95

<2.00E+01 0.00E+00 2.00E+01 I-131

<2.42E+01 0.00E+00 2.42E+01 Cs-134

<1.51E+01 0.00E+00 1.51E+01 Cs-137

<2.43E+01 0.00E+00 2.43E+01 BaLa-140 2.57E+02 1.61E+02 2.42E+02 Be-7 4.47E+03 6.52E+02 1.94E+02 K-40 Sample ID: 412037 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/1/2016 MIXEDBLV

<2.10E+01 0.00E+00 2.10E+01 Mn-54

<1.60E+01 0.00E+00 1.60E+01 Co-58

<4.72E+01 0.00E+00 4.72E+01 Fe-59

<1.88E+01 0.00E+00 1.88E+01 Co-60

<4.76E+01 0.00E+00 4.76E+01 Zn-65

<3.22E+01 0.00E+00 3.22E+01 Zr-95

<1.79E+01 0.00E+00 1.79E+01 Nb-95

<1.62E+01 0.00E+00 1.62E+01 I-131

<2.11E+01 0.00E+00 2.11E+01 Cs-134

<1.48E+01 0.00E+00 1.48E+01 Cs-137

<2.14E+01 0.00E+00 2.14E+01 BaLa-140 7.93E+02 2.12E+02 2.44E+02 Be-7 4.67E+03 6.65E+02 1.93E+02 K-40 Sample ID: 414422 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/6/2016 MIXEDBLV

<3.07E+01 0.00E+00 3.07E+01 Mn-54

<2.33E+01 0.00E+00 2.33E+01 Co-58

<5.25E+01 0.00E+00 5.25E+01 Fe-59

<3.44E+01 0.00E+00 3.44E+01 Co-60

<6.64E+01 0.00E+00 6.64E+01 Zn-65

<3.78E+01 0.00E+00 3.78E+01 Zr-95

<3.47E+01 0.00E+00 3.47E+01 Nb-95

<2.79E+01 0.00E+00 2.79E+01 I-131

<2.95E+01 0.00E+00 2.95E+01 Cs-134

<2.16E+01 0.00E+00 2.16E+01 Cs-137

<2.05E+01 0.00E+00 2.05E+01 BaLa-140

<3.70E+02 0.00E+00 3.70E+02 Be-7 5.83E+03 9.00E+02 4.54E+02 K-40 Sample ID: 417257 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/2/2016 MIXEDBLV

<1.51E+01 0.00E+00 1.51E+01 Mn-54

<1.36E+01 0.00E+00 1.36E+01 Co-58

<4.47E+01 0.00E+00 4.47E+01 Fe-59

<2.53E+01 0.00E+00 2.53E+01 Co-60

<4.12E+01 0.00E+00 4.12E+01 Zn-65

<3.83E+01 0.00E+00 3.83E+01 Zr-95

<2.11E+01 0.00E+00 2.11E+01 Nb-95

<1.34E+01 0.00E+00 1.34E+01 I-131

<2.44E+01 0.00E+00 2.44E+01 Cs-134

<2.04E+01 0.00E+00 2.04E+01 Cs-137

<1.90E+01 0.00E+00 1.90E+01 BaLa-140 7.86E+02 1.96E+02 1.93E+02 Be-7 4.25E+03 6.45E+02 2.31E+02 K-40 Sample ID: 419434 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/7/2016 MIXEDBLV

<2.25E+01 0.00E+00 2.25E+01 Mn-54

<1.62E+01 0.00E+00 1.62E+01 Co-58

<4.36E+01 0.00E+00 4.36E+01 Fe-59

<1.99E+01 0.00E+00 1.99E+01 Co-60

<3.51E+01 0.00E+00 3.51E+01 Zn-65

<3.52E+01 0.00E+00 3.52E+01 Zr-95

<2.10E+01 0.00E+00 2.10E+01 Nb-95

<2.46E+01 0.00E+00 2.46E+01 I-131 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 91 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 226 [ INDICATOR - S @ 0.48 miles ]

Sample ID: 419434 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/7/2016 MIXEDBLV

<2.44E+01 0.00E+00 2.44E+01 Cs-134

<2.04E+01 0.00E+00 2.04E+01 Cs-137

<2.23E+01 0.00E+00 2.23E+01 BaLa-140 7.45E+02 1.89E+02 1.92E+02 Be-7 4.76E+03 6.74E+02 2.63E+02 K-40 Sample ID: 422486 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/4/2016 MIXEDBLV

<2.47E+01 0.00E+00 2.47E+01 Mn-54

<1.99E+01 0.00E+00 1.99E+01 Co-58

<4.29E+01 0.00E+00 4.29E+01 Fe-59

<2.22E+01 0.00E+00 2.22E+01 Co-60

<3.86E+01 0.00E+00 3.86E+01 Zn-65

<3.62E+01 0.00E+00 3.62E+01 Zr-95

<2.35E+01 0.00E+00 2.35E+01 Nb-95

<1.98E+01 0.00E+00 1.98E+01 I-131

<2.78E+01 0.00E+00 2.78E+01 Cs-134

<2.40E+01 0.00E+00 2.40E+01 Cs-137

<1.73E+01 0.00E+00 1.73E+01 BaLa-140 6.89E+02 1.97E+02 2.13E+02 Be-7 3.20E+03 5.66E+02 2.77E+02 K-40 Sample ID: 425979 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/1/2016 MIXEDBLV

<2.20E+01 0.00E+00 2.20E+01 Mn-54

<1.80E+01 0.00E+00 1.80E+01 Co-58

<3.57E+01 0.00E+00 3.57E+01 Fe-59

<2.65E+01 0.00E+00 2.65E+01 Co-60

<5.12E+01 0.00E+00 5.12E+01 Zn-65

<3.62E+01 0.00E+00 3.62E+01 Zr-95

<1.63E+01 0.00E+00 1.63E+01 Nb-95

<1.97E+01 0.00E+00 1.97E+01 I-131

<2.57E+01 0.00E+00 2.57E+01 Cs-134

<2.05E+01 0.00E+00 2.05E+01 Cs-137

<2.07E+01 0.00E+00 2.07E+01 BaLa-140 5.36E+02 1.77E+02 2.08E+02 Be-7 3.42E+03 5.96E+02 3.67E+02 K-40 Sample ID: 428481 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/6/2016 MIXEDBLV

<1.34E+01 0.00E+00 1.34E+01 Mn-54

<1.75E+01 0.00E+00 1.75E+01 Co-58

<3.97E+01 0.00E+00 3.97E+01 Fe-59

<1.75E+01 0.00E+00 1.75E+01 Co-60

<3.70E+01 0.00E+00 3.70E+01 Zn-65

<3.18E+01 0.00E+00 3.18E+01 Zr-95

<1.85E+01 0.00E+00 1.85E+01 Nb-95

<1.66E+01 0.00E+00 1.66E+01 I-131

<2.44E+01 0.00E+00 2.44E+01 Cs-134

<1.80E+01 0.00E+00 1.80E+01 Cs-137

<1.92E+01 0.00E+00 1.92E+01 BaLa-140 4.39E+02 1.55E+02 1.85E+02 Be-7 3.51E+03 5.81E+02 3.30E+02 K-40 Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 398625 Nuclide Activity 2 Sigma Error MDA Sample Dates: 1/6/2016 - 1/6/2016 MIXEDBLV

<2.12E+01 0.00E+00 2.12E+01 Mn-54

<1.93E+01 0.00E+00 1.93E+01 Co-58

<3.17E+01 0.00E+00 3.17E+01 Fe-59

<2.42E+01 0.00E+00 2.42E+01 Co-60

<5.78E+01 0.00E+00 5.78E+01 Zn-65

<3.50E+01 0.00E+00 3.50E+01 Zr-95

<1.78E+01 0.00E+00 1.78E+01 Nb-95

<1.65E+01 0.00E+00 1.65E+01 I-131

<3.23E+01 0.00E+00 3.23E+01 Cs-134

<2.43E+01 0.00E+00 2.43E+01 Cs-137

<2.36E+01 0.00E+00 2.36E+01 BaLa-140 4.16E+03 5.28E+02 2.56E+02 Be-7 3.73E+03 6.07E+02 2.99E+02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 92 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 400271 Nuclide Activity 2 Sigma Error MDA Sample Dates: 2/2/2016 - 2/2/2016 MIXEDBLV

<2.02E+01 0.00E+00 2.02E+01 Mn-54

<1.41E+01 0.00E+00 1.41E+01 Co-58

<2.76E+01 0.00E+00 2.76E+01 Fe-59

<1.36E+01 0.00E+00 1.36E+01 Co-60

<3.84E+01 0.00E+00 3.84E+01 Zn-65

<2.89E+01 0.00E+00 2.89E+01 Zr-95

<2.07E+01 0.00E+00 2.07E+01 Nb-95

<1.36E+01 0.00E+00 1.36E+01 I-131

<2.12E+01 0.00E+00 2.12E+01 Cs-134

<2.13E+01 0.00E+00 2.13E+01 Cs-137

<2.11E+01 0.00E+00 2.11E+01 BaLa-140 2.93E+03 3.97E+02 2.42E+02 Be-7 3.59E+03 5.62E+02 2.54E+02 K-40 Sample ID: 402260 Nuclide Activity 2 Sigma Error MDA Sample Dates: 3/1/2016 - 3/1/2016 MIXEDBLV

<2.74E+01 0.00E+00 2.74E+01 Mn-54

<2.57E+01 0.00E+00 2.57E+01 Co-58

<7.58E+01 0.00E+00 7.58E+01 Fe-59

<3.55E+01 0.00E+00 3.55E+01 Co-60

<6.94E+01 0.00E+00 6.94E+01 Zn-65

<4.94E+01 0.00E+00 4.94E+01 Zr-95

<2.99E+01 0.00E+00 2.99E+01 Nb-95

<2.60E+01 0.00E+00 2.60E+01 I-131

<4.25E+01 0.00E+00 4.25E+01 Cs-134

<3.48E+01 0.00E+00 3.48E+01 Cs-137

<2.38E+01 0.00E+00 2.38E+01 BaLa-140 1.85E+03 3.68E+02 3.06E+02 Be-7 4.23E+03 7.89E+02 5.35E+02 K-40 Sample ID: 406018 Nuclide Activity 2 Sigma Error MDA Sample Dates: 4/5/2016 - 4/5/2016 MIXEDBLV

<1.69E+01 0.00E+00 1.69E+01 Mn-54

<1.13E+01 0.00E+00 1.13E+01 Co-58

<3.54E+01 0.00E+00 3.54E+01 Fe-59

<1.66E+01 0.00E+00 1.66E+01 Co-60

<4.29E+01 0.00E+00 4.29E+01 Zn-65

<2.48E+01 0.00E+00 2.48E+01 Zr-95

<1.44E+01 0.00E+00 1.44E+01 Nb-95

<1.45E+01 0.00E+00 1.45E+01 I-131

<2.08E+01 0.00E+00 2.08E+01 Cs-134

<2.03E+01 0.00E+00 2.03E+01 Cs-137

<1.18E+01 0.00E+00 1.18E+01 BaLa-140 3.12E+02 1.37E+02 1.89E+02 Be-7 4.23E+03 5.89E+02 2.63E+02 K-40 Sample ID: 409568 Nuclide Activity 2 Sigma Error MDA Sample Dates: 5/3/2016 - 5/3/2016 MIXEDBLV

<3.70E+01 0.00E+00 3.70E+01 Mn-54

<2.80E+01 0.00E+00 2.80E+01 Co-58

<6.67E+01 0.00E+00 6.67E+01 Fe-59

<3.67E+01 0.00E+00 3.67E+01 Co-60

<6.37E+01 0.00E+00 6.37E+01 Zn-65

<3.29E+01 0.00E+00 3.29E+01 Zr-95

<2.55E+01 0.00E+00 2.55E+01 Nb-95

<2.69E+01 0.00E+00 2.69E+01 I-131

<3.01E+01 0.00E+00 3.01E+01 Cs-134

<3.49E+01 0.00E+00 3.49E+01 Cs-137

<3.05E+01 0.00E+00 3.05E+01 BaLa-140

<2.38E+02 0.00E+00 2.38E+02 Be-7 2.75E+03 6.18E+02 4.26E+02 K-40 Sample ID: 412038 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/1/2016 MIXEDBLV

<2.02E+01 0.00E+00 2.02E+01 Mn-54

<1.75E+01 0.00E+00 1.75E+01 Co-58

<4.55E+01 0.00E+00 4.55E+01 Fe-59

<1.75E+01 0.00E+00 1.75E+01 Co-60

<4.25E+01 0.00E+00 4.25E+01 Zn-65

<3.33E+01 0.00E+00 3.33E+01 Zr-95

<1.39E+01 0.00E+00 1.39E+01 Nb-95 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 93 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 412038 Nuclide Activity 2 Sigma Error MDA Sample Dates: 6/1/2016 - 6/1/2016 MIXEDBLV

<2.06E+01 0.00E+00 2.06E+01 I-131

<2.95E+01 0.00E+00 2.95E+01 Cs-134

<1.97E+01 0.00E+00 1.97E+01 Cs-137

<2.91E+01 0.00E+00 2.91E+01 BaLa-140 6.23E+02 2.09E+02 2.70E+02 Be-7 3.00E+03 5.12E+02 1.98E+02 K-40 Sample ID: 414423 Nuclide Activity 2 Sigma Error MDA Sample Dates: 7/6/2016 - 7/6/2016 MIXEDBLV

<3.51E+01 0.00E+00 3.51E+01 Mn-54

<2.70E+01 0.00E+00 2.70E+01 Co-58

<4.44E+01 0.00E+00 4.44E+01 Fe-59

<2.88E+01 0.00E+00 2.88E+01 Co-60

<6.19E+01 0.00E+00 6.19E+01 Zn-65

<3.61E+01 0.00E+00 3.61E+01 Zr-95

<2.99E+01 0.00E+00 2.99E+01 Nb-95

<2.36E+01 0.00E+00 2.36E+01 I-131

<3.08E+01 0.00E+00 3.08E+01 Cs-134

<2.66E+01 0.00E+00 2.66E+01 Cs-137

<1.89E+01 0.00E+00 1.89E+01 BaLa-140 7.12E+02 2.29E+02 2.78E+02 Be-7 3.53E+03 6.08E+02 5.56E+01 K-40 Sample ID: 417258 Nuclide Activity 2 Sigma Error MDA Sample Dates: 8/2/2016 - 8/2/2016 MIXEDBLV

<3.53E+01 0.00E+00 3.53E+01 Mn-54

<3.31E+01 0.00E+00 3.31E+01 Co-58

<4.11E+01 0.00E+00 4.11E+01 Fe-59

<3.55E+01 0.00E+00 3.55E+01 Co-60

<4.19E+01 0.00E+00 4.19E+01 Zn-65

<4.92E+01 0.00E+00 4.92E+01 Zr-95

<2.99E+01 0.00E+00 2.99E+01 Nb-95

<2.84E+01 0.00E+00 2.84E+01 I-131

<3.48E+01 0.00E+00 3.48E+01 Cs-134

<3.19E+01 0.00E+00 3.19E+01 Cs-137

<2.53E+01 0.00E+00 2.53E+01 BaLa-140 1.04E+03 3.20E+02 4.13E+02 Be-7 1.80E+03 5.59E+02 6.54E+02 K-40 Sample ID: 419435 Nuclide Activity 2 Sigma Error MDA Sample Dates: 9/7/2016 - 9/7/2016 MIXEDBLV

<1.94E+01 0.00E+00 1.94E+01 Mn-54

<2.57E+01 0.00E+00 2.57E+01 Co-58

<4.02E+01 0.00E+00 4.02E+01 Fe-59

<2.44E+01 0.00E+00 2.44E+01 Co-60

<5.20E+01 0.00E+00 5.20E+01 Zn-65

<4.15E+01 0.00E+00 4.15E+01 Zr-95

<1.73E+01 0.00E+00 1.73E+01 Nb-95

<3.53E+01 0.00E+00 3.53E+01 I-131

<2.29E+01 0.00E+00 2.29E+01 Cs-134

<2.65E+01 0.00E+00 2.65E+01 Cs-137

<3.17E+01 0.00E+00 3.17E+01 BaLa-140 1.16E+03 2.63E+02 2.60E+02 Be-7 2.26E+03 4.73E+02 2.93E+02 K-40 Sample ID: 422487 Nuclide Activity 2 Sigma Error MDA Sample Dates: 10/4/2016 - 10/4/2016 MIXEDBLV

<2.43E+01 0.00E+00 2.43E+01 Mn-54

<2.40E+01 0.00E+00 2.40E+01 Co-58

<6.33E+01 0.00E+00 6.33E+01 Fe-59

<2.20E+01 0.00E+00 2.20E+01 Co-60

<5.00E+01 0.00E+00 5.00E+01 Zn-65

<4.80E+01 0.00E+00 4.80E+01 Zr-95

<2.50E+01 0.00E+00 2.50E+01 Nb-95

<2.01E+01 0.00E+00 2.01E+01 I-131

<3.68E+01 0.00E+00 3.68E+01 Cs-134

<2.96E+01 0.00E+00 2.96E+01 Cs-137

<2.42E+01 0.00E+00 2.42E+01 BaLa-140 5.27E+02 2.39E+02 3.40E+02 Be-7 4.54E+03 7.36E+02 3.48E+02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 94 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

CATAWBA Radiological Environmental Monitoring Analysis Report - 2016 (Appendix E)

Media Type: VEGETATION Concentration (Activity): pCi/kg Sample Point 258 [ CONTROL - W @ 9.84 miles ]

Sample ID: 425980 Nuclide Activity 2 Sigma Error MDA Sample Dates: 11/1/2016 - 11/1/2016 MIXEDBLV

<2.10E+01 0.00E+00 2.10E+01 Mn-54

<1.62E+01 0.00E+00 1.62E+01 Co-58

<2.80E+01 0.00E+00 2.80E+01 Fe-59

<2.54E+01 0.00E+00 2.54E+01 Co-60

<4.41E+01 0.00E+00 4.41E+01 Zn-65

<4.00E+01 0.00E+00 4.00E+01 Zr-95

<1.92E+01 0.00E+00 1.92E+01 Nb-95

<1.38E+01 0.00E+00 1.38E+01 I-131

<3.32E+01 0.00E+00 3.32E+01 Cs-134

<2.41E+01 0.00E+00 2.41E+01 Cs-137

<5.81E+00 0.00E+00 5.81E+00 BaLa-140 1.10E+03 2.39E+02 2.27E+02 Be-7 1.88E+03 4.46E+02 4.07E+02 K-40 Sample ID: 428482 Nuclide Activity 2 Sigma Error MDA Sample Dates: 12/6/2016 - 12/6/2016 MIXEDBLV

<1.97E+01 0.00E+00 1.97E+01 Mn-54

<1.87E+01 0.00E+00 1.87E+01 Co-58

<3.20E+01 0.00E+00 3.20E+01 Fe-59

<2.37E+01 0.00E+00 2.37E+01 Co-60

<4.12E+01 0.00E+00 4.12E+01 Zn-65

<3.24E+01 0.00E+00 3.24E+01 Zr-95

<2.01E+01 0.00E+00 2.01E+01 Nb-95

<1.56E+01 0.00E+00 1.56E+01 I-131

<2.12E+01 0.00E+00 2.12E+01 Cs-134

<2.12E+01 0.00E+00 2.12E+01 Cs-137

<1.87E+01 0.00E+00 1.87E+01 BaLa-140 4.41E+02 1.45E+02 1.62E+02 Be-7 3.34E+03 5.37E+02 1.79E+02 K-40 Duke Energy Annual Report - Appendix E Report Generated @ 4/11/2017 10:20:57 Appendix E - Page 95 of 95 EnRad Laboratories 13339 Hagers Ferry Road Huntersville, North Carolina 28078

Appendix F - Page 1 APPENDIX F ERRATA TO PREVIOUS REPORTS

Appendix F - Page 2 APPENDIX F ERRATA TO THE 2016 AREOR Catawba AREOR: 2005 During a 2016 NOS audit, it was identified that some samples processed by the EnRad laboratory using the APEX gamma counting geometry 025LMAR310 did not have the required a priori lower limit of detection (LLD) calculated prior to performing the analysis.

An a posteriori LLD was calculated and all required lower limit of detections were satisfied (NCR # 02021801). The failure to calculate the a priori LLD prior to performing the analysis is an Analytical Deviation.

EnRad performed an extent of condition to assess which samples had been processed using the 025LMAR310 geometry. The Sample Manager database was evaluated for any references to the 025LMAR310 geometry and its various alternate historical names. Catawba food products/crops indicator location 253 [Retired] was determined to have been impacted (NCR

02042792). Catawba food products/crops indicator location was located in the SSE sector at 1.90 miles (Irrigated Garden). The impacted sample was assigned Sample Manager ID #

82442 (Lab Manager LM3_25032813) for collection period 4OCT2005. Gamma analysis results and the a posteriori LLDs were reviewed and the analysis was determined valid.

The a posteriori LLD satisfied the requirements of Catawba Selected Licensee Commitments (SLC) 16.11 RADIOLOGICAL EFFLUENTS CONTROLS, 16.11-13 Radiological Environmental Monitoring, Table 16.11-13-3 (Lower Limit of Detection (LLD)). While the a priori lower limits of detection (LLD) were not calculated prior to performing the analysis, all analytical results for this sample were valid. There were no collection discrepancies identified with this sample.

Catawba AREOR: 2014 During a 2016 NOS audit, it was identified that some samples processed by the EnRad laboratory using the APEX gamma counting geometry 025LMAR310 did not have the required a priori lower limit of detection (LLD) calculated prior to performing the analysis.

An a posteriori LLD was calculated and all required lower limit of detections were satisfied (NCR # 02021801). The failure to calculate the a priori LLD prior to performing the analysis is an Analytical Deviation.

EnRad performed an extent of condition to assess which samples had been processed using the 025LMAR310 geometry. The Sample Manager database was evaluated for any references to the 025LMAR310 geometry and its various alternate historical names. Catawba food products/crops indicator location 260 was determined to have been impacted (NCR #

02042794). Catawba food products/crops indicator location is located in the SSE sector at 2.00 miles (Irrigated Garden). The impacted sample was assigned Sample Manager ID #

Appendix F - Page 3 290923 for collection period 6MAY2014. Gamma analysis results and the a posteriori LLDs were reviewed and the analysis was determined valid.

The a posteriori LLD satisfied the requirements of Catawba Selected Licensee Commitments (SLC) 16.11 RADIOLOGICAL EFFLUENTS CONTROLS, 16.11-13 Radiological Environmental Monitoring, Table 16.11-13-3 (Lower Limit of Detection (LLD)). While the a priori lower limits of detection (LLD) were not calculated prior to performing the analysis, all analytical results for this sample were valid. There were no collection discrepancies identified with this sample.

Catawba AREOR: 2014, 2015 During a 2016 Dosimetry Laboratory peer assessment, it was discovered the 2014 and 2015 (all quarters) internal environmental TLD crosschecks were not completed in accordance with procedure RD/0/B/4000/13, Environmental Monitoring (NCR # 02073609). Environmental monitoring is not National Voluntary Laboratory Accreditation Program (NVLAP) accredited, but the internal crosscheck data was reported to the NRC in the 2014 and 2015 AREORs. External environmental TLD crosschecks were performed during 2014 and 2015 in accordance with procedure RD/0/B/4000/13, Environmental Monitoring, therefore environmental TLD QA/QC was performed.

Laboratory TLD data supporting the 2014 and 2015 internal environmental TLD crosscheck result tables could not be located during the 2016 assessment. The internal environmental crosscheck (Duke Energy) table indicated in the quality assurance section of the 2014 and 2015 reports is therefore not considered acceptable and is removed from the 2014 and 2015 reports.

The internal environmental TLD crosscheck data were not presented in the 2016 AREOR and were removed from the quality assurance section in entirety.

CNS-17-026, Annual Radiological Environmental Operating Report 2016

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