Text

Transmittal of 2017 Radiological Environmental Operating Report
	ML18128A198
Person / Time
Site:	Comanche Peak
Issue date:	04/30/2018
From:	Thomas McCool; Vistra Energy
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	CP-201700227, TXX-18024
	Download: ML18128A198 (120)
	v • d • e

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ENERGY

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Luminant Thomas P. McCool Site Vice President Luminant P.O. Box 1002 6322 North FM 56 Glen Rose, TX 76043 o 254 .897.6042 CP-201700227 TXX-18024 U.S. Nu clear Regulatory Commission Ref Te ch Spec 5.6.2 ATIN: Document Control Desk Washington , DC 20555-0001 4/30/2018

SUBJECT:

COMANCHE PEAK NUCLEAR POWER PLANT DOCKET NOS. 50-445 AND 50-446 TRANSMITIAL OF YEAR 2017 RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT

Dear Sir or Madam:

Enclosed is the Annual Radiolog ical Environmenta l Operating Report for the Comanche Peak Radiological Environmental Monitoring Program . Thi s report is submitted pursuant to Section 5.6.2 of the Comanche Peak Units 1 and 2 Technical Specifications (Appendi x A to Operating License Nos . NPF-87 and NPF-89 ). The report cove rs the period from January 1, 2017 through December 31, 2017 and summarizes the results of measurements and analysis of data obtained from samp les collected during thi s interval.

If there are any questions regarding this report, please contact Steve Di xo n at (254) 897-5482 or Kassie Mandrell at (254) 897-6987.

6555 SIERRA DRIVE IRVING, TEXAS 75039 0214-812-4600 VISTRAEN ERGY.COM

TXX-18024 Page 2 of 2 Sincerely, Enclosure - Coma nche Peak Annual Radiological Environmental Operating Report for 2017 c- K. M. Kennedy, Region IV M . O'Banion, NRR Resident In spectors, Comanche Peak

LUMINANT COMANCHE PEAK NUCLEAR POWEJl PLANT ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT JANUARY 1, 2017 through DECEMBER 31, 2017 LUMINANT REVIEW and APPROVAL J/-/;,J.-/8 Dote Documented on RPl-710-2

Table of Contents Section Title I. Introduction A. Site and Station Description page 5 B. Objectives and Overview of the CPNPP Radiological Environmental Monitoring Program page 5 II. Program Descriptions and Results A. Sample Locations page 7 Table 1-- Comanche Peak Nuclear Power Plant Radiological Environmental Monitoring Program Table 2 -- Kev to Environmental Sampling Locations B. Direct Radiation Program page 11 Methods, Procedures and Result Summaries Exceptions to the Program Table 3 -- Environmental Direct Radiation Results Table 14 -- TLD Trend Quarterly Average C. Airborne Program page 16 Methods, Procedures and Result Summaries Exceptions to the Program Table 4 -- Environmental Airborne Particulate Gross Beta Results Graph 1-- Environmental Air Sample Gross Beta Results -

Maximum and Minimum Table 5 -- Environmental Air Sample lodine-131 Results Table 6 -- Environmental Air Particulate Composite Gamma Isotopic Results 2

D. Discharge Pathway Surface Water Program page 37 Methods, Procedures and Result Summaries Exceptions to the Program Table 7 -- Environmental Discharge Pathway Surface Water Tritium and Isotopic Results Graph 2-- Environmental Discharge Pathway Surface Water Tritium Results E. Squaw Creek and Lake Granbury Surface Water Program page 39 Methods, Procedures and Result Summaries Exceptions to the Program Table 8 -- Environmental Squaw Creek and Lake Granbury Surface Water Tritium, Gross Beta and Gamma Isotopic Results Graph 3-- Squaw Creek Maximum Tritium Values Graph 4-- Environmental Squaw Creek and Lake Granbury Surface Water Tritium Results Graph 5-- Environmental Squaw Creek and Lake Granbury Surface Water Gross Beta Results F. Groundwater Program page 70 Methods, Procedures and Result Summaries Exceptions to the Program Table 9 -- Environmental Groundwater Tritium and Gamma Isotopic Results G. Sediment Program page 76 Methods, Procedures and Result Summaries Exceptions to the Program Table 10 -- Environmental Sediment Gamma Isotopic Results H. Fish Program page 81 Methods, Procedures and Result Summaries Exceptions to the Program Table 11 -- Environmental Fish Gamma Isotopic Results 3

I. Food Products Program page 85 Methods, Procedures and Result Summaries Exceptions to the Program Table 12 -- Environmental Food Products Gamma Isotopic Results J. Broadleaf Program page 88 Methods, Procedures and Result Summaries Exceptions to the Program Table 13 -- Environmental Broadleaf Iodine-131 and Gamma Isotopic Results K. Conclusions page 101 L. Inter Laboratory Comparison and Cross Check Program page 101 III. Appendix A Comanche Peak Nuclear Power Plant Land Use Census 4

Introduction Results of the Radiological Environmental Monitoring Program for the Comanche Peak Nuclear Power Plant (CPNPP) for the year 2017 are contained within this report. This report covers the period from January 1, 2017 through December 31, 2017 and summarizes the results of measurements and analysis of data obtained from environmental samples collected during this same timeframe.

A. Site and Station Description CPNPP consists of two pressurized water reactor units, each designed to operate at a power level of about 1250 megawatts (electrical). The Station is located on Squaw Creek reservoir in Somervell and Hood counties, about forty miles southwest of Fort Worth, Texas. Unit 1 received a low power operating license February 8, 1990 and achieved initial criticality on April 3, 1990. A full power license for Unit 1 was issued on April 17, 1990 and commercial operation was declared on August 13, 1990. Unit 2 achieved initial criticality on March 24, 1993 and synchronized to the electrical grid on April 9, 1993 .

B. Objectives and Overviews of the CPNPP Radiological Environmental Monitoring Program The United States Nuclear Regulatory Commission (USNRC) regulations require that nuclear power plants be designed, constructed, and operated to keep levels of radioactive material in effluents to unrestricted areas as low as reasonably achievable (ALARA). To assure that these criteria are met, each license authorizing reactor operation includes technical specifications governing the release of radioactive effluents.

In-plant monitoring is used to assure that these predetermined release limits are not exceeded. However, as a precaution against unexpected and undefined processes that might allow undue accumulation of radioactivity in any sector of the environment, a program for monitoring the plant environs is also included.

Sampling locations were selected on the basis of local ecology, meteorology, physical characteristics of the region, and demographic and land use features of the site vicinity. The radiological environmental monitoring program was designed on the basis of the USNRC Branch Technical Position "An Acceptable Radiological Environmental Monitoring Program" on radiological environmental monitoring issued by the Radiological Assessment Branch, Revision 1 (November 1979), the CPNPP Technical Specification "Technical Specifications for Comanche Peak Nuclear Power Plant Units 1 and 2" and the "CPSES Offsite Dose Calculation Manual" (ODCM).

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The Radiological Environmental Monitoring Program includes the following:

The measurement of ambient gamma radiation by Thermal Luminescent dosimetry;

The determination of airborne gross beta, gamma emitters, and Iodine-131 ;

The determination of tritium and gamma emitters in Discharge Pathway surface water;

The determination of gross beta, tritium, Iodine-131, and gamma emitters in potential drinking water sources;

The determination of tritium and gamma emitters in ground water and fish;

The determination of gamma emitters in sediment;

The determination of gamma emitters in food products and;

The determination of gamma emitters and Iodine-131 in broadleaf vegetation.

The regulations governing the quantities of radioactivity in reactor effluents allow nuclear power plants to contribute, at most, only a small percentage increase above normal background radioactivity. Background levels at any one location are not constant but vary with time as they are influenced by external events such as cosmic ray bombardment; weapons test fallout, and seasonal variations. These levels also can vary spatially within relatively short distances reflecting variations in geological composition. To differentiate between background radiation levels and increases resulting from operation of CPNPP, the radiological surveys of the plant environs were divided into pre-operational and operational phases.

The pre-operational phase of the program provided a general characterization of the radiation levels and concentrations prevalent in these areas prior to plant operation along with an indication of the degree of natural variation to be expected. The operational phase of the program obtains data which, when considered along with the data obtained in the pre-operational phase, assists in the evaluation of the radiological impact of plant operation.

Pre-operational measurements were conducted at CPNPP from 1981 to 1989. These pre-operational measurements were performed to:

Evaluate procedures, equipment, and techniques;

Identify potentially important pathways to be monitored after plant operation;

Measure background levels and the variations along potentially important pathways;

Provide baseline data for statistical comparisons with future operational analytical results.

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The operational Radiological Environmental Monitoring Program is conducted to:

Verify that measurable concentrations of radioactive materials and levels of radiation are not higher than expected on the basis of the effluent measurements and modeling of the environmental exposure pathways;

Verify the effectiveness of in-plant measures used for controlling the release of radioactive materials;

Identify changes in the areas at and beyond the site boundary that may impact the principal pathways of exposure.

This report documents the twenty-eighth year of operational measurements and is submitted in accordance with the requirements of the CPSES Offsite Dose Calculation Manual, Part I, Administrative Control 6.9.1.3.

Note: Comanche Peak Steam Electric Station (CPSES) is equivalent to Comanche Peak Nuclear Power Plant (CPNPP).

Program Descriptions and Results A. Sample Locations Within a radius of twenty miles of the CPNPP site there are seventy-two (72) sample locations included in the monitoring program. The number of sample points and the specific locations for the sample points were determined by considering locations where the highest off-site environmental concentrations have been predicted from plant effluent source terms, site hydrology, and site meteorological conditions. Other factors considered were applicable regulations, population distribution, and ease of access to sampling stations, availability of samples at desired locations, security and future program integrity. Additionally, an annual land use census is conducted to identify changes in the areas surrounding the plant. If changes are identified that impact the principle pathways of exposure, appropriate changes to the radiological environmental monitoring program are implemented. A copy of the report "Comanche Peak Nuclear Power Plant Land Use Census" is provided in Appendix A to this report.

Table 1 - Comanche Peak Nuclear Power Plant Radiological Environmental Monitoring Program contains a brief outline of the current program. This table specifies the sample media type, the number of locations for each media type, the sector and distance identifier for each sample location, the sample frequency, the type of analysis required and the frequency each analysis is required to be performed (Analytical Frequency).

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Table 2 - Key to Environmental Sampling Locations provides a reference that links the sampling point designations used in procedures and forms to the appropriate physical sample location (sector and distance) and to the correct sample type. This cross-reference enhances the ability to review data and tie the data to the correct sample points and to ensure all samples are collected and analyzed as specified.

Currently there are no milk sample locations within ten miles of the CPNPP site and there are no milk sample locations within twenty miles that will participate in the environmental program. CPNPP already samples extra broadleaf locations as required due to no milk locations within the ten-mile radius therefore, no changes to the program are necessary. Milk sampling will be resumed if any future annual land use census determines a dairy has been established within the specified area.

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Table 1 - Comanche Peak Nuclear Power Plant Radiological Environmental Monitoring Program Media Number of Identification by Sector and Distance (miles) Sampling Analysis Analytical Locations Frequency (a) Frequency (a)

N-1.45; N-4.4; N-6.5; N-9.4 ; NNE-1.1 ; NNE-5.65 ;

NE-1 .7; NE-4.8; ENE-2.5; ENE-5.0; E-0.5; E-1.9; E-3.5; E-4.2; ESE-1.4; ESE-4.7; SE-1.3; SE-3.85; SE-4.6; SSE-1 .3; SSE-4.4; SSE-4.5; Gamma Thermo Lum inescent 43 S-1 .5; S-4.2; SSW-1 .1; SSW-4.4; SW-0.9; Q, A Q, A Exposure (TLD )Dosimetry SW-4.8; SW-12.3; WSW-1.0 ; WSW-5.35 ;

WSW-7 .0; W-1 .0; W-2 .0; W-5 .5; WNW-1.0; WNW-5.0 ; WNW-6.7; NW-1.0; NW-5.7; NW-9.9; NNW-1 .35; NNW-4.6 Gross Beta Air Particulate N-9.4; E-3.5; SSE-4.5; SW-12 .3; NW-1 .0; Gamma Isotopic Filter w

Air Iodine 8

N-1.45; SW/WSW-0.95; S/SSW-1 .2 w Gamma Isotopic QC Charcoa l w

Discharge Gamma Isotopic M Pathway Surface 4 N-19.3; ESE-1.4; N-1.5; NE-7.4 M(b)

Tritium QC Water Gross Beta M Surface Water & Gamma Isotopic M 2 NNW-0.1 ; N-9.9 M(c)

Drinking sources lodine-13 1 M Tritium QC Gamma Isotopic Q Ground Water 5 SSE-4. 6; W-1 .2; WSW-0.1; N-9.8; N-1 .45 Q Tritium Q Sediment 4 N-9.9; NNE-1 .0; NE-7.4; SE-5.3 SA Gamma Isotopic SA Fish 2 NNE-8.0; ENE-2.0 SA Gamma Isotopic SA Gamma Isotopic MH Food Products 1 ENE-9 .0, E-4.2 MH lodine-131 MH Broadleaf 3 N-1 .45; SW-1 .0; SW-13.5 M Gamma Isotopic M Ve etation (a) Frequency codes are: W-Weekly; M-Monthly; Q-Quarterly; QC-Quarterly Composite; MH-Monthly at Harvest; SA-Semiannual; A-Annual (b) Surface water samples from Squaw Creek are monthly composites of weekly grab samples. Surface water samples from Lake Granbury are monthly grab samples.

(c) Surface water drinking samples are a monthly composite of weekly grab samples.

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Table 2 Key to Environmental Sampling Locations SAMPLING LOCATION SAMPLE SAMPLING LOCATION SAMPLE POINT (SECTOR-MILE) TYPE* POINT (SECTOR-MILE) TYPE*

Al N-l.4S A R29 SW-12.3 R A2 N-9.4 A R30 WSW-1.0 R A3 E-3.S A R31 WSW-S.3S R A4 SSE-4.S A R32 WSW-7.0 R AS S/SSW-1.2 A R33 W-1.0 R A6 SW-12.3 A R34 W-2.0 R A7 SW/WSW-0.9S A R3S W-S.S R A8 NW-1.0 A R36 WNW-1.0 R Rl N-l.4S R R37 WNW-S.O R R2 N-4.4 R R38 WNW-6.7 R R3 N-6.S R R39 NW-1.0 R R4 N-9.4 R R40 NW-S.7 R RS NNE-1.1 R R41 NW-9.9 R R6 NNE-S.6S R R42 NNW-1.3S R R7 NE-1.7 R R43 NNW-4.6 R R8 NE-4.8 R SWl N-1.S SW R9 ENE-2.S R SW2 N-9.9 SW/DW RlO ENE-S .O R SW3 N-19.9 SW Rll E-0.S R SW4 NE-7.4 SW Rl2 E-1.9 R SWS ESE-1.4 SW R13 E-3.S R SW6 NNW-0.1 SW/DW Rl4 E-4.2 R GWl W-1.2 GW/DW RlS ESE-1.4 R GW2 WSW-0.1 GW/DW Rl6 ESE-4.7 R GW3 SSE-4.6 GW/DW Rl7 SE-1.3 R GW4 N-9.8 GW/DW Rl8 SE-3.8S R GWS N-l.4S GW/DW Rl9 SE-4.6 R SSl NNE-1.0 ss R20 SSE-1.3 R SS2 N-9.9 ss R21 SSE-4.4 R SS3 NE-7.4 ss R22 SSE-4.S R SS4 SE-S.3 ss R23 S-1.S R Fl ENE-2.0 F R24 S-4.2 R F2 NNE-8.0 F R2S SSW-1.1 R FPl ENE-9.0 FP R26 SSW-4.4 R FP2 E-4.2 FP R27 SW-0.9 R BLl N-1.4S BL R28 SW-4.8 R BL2 SW-1.0 BL BL3 SW-13.S BL Sample Type* A - AIR SAMPLE GW - GROUND WATER F- FISH R - DIRECT RADIATION SS - SHORELINE SEDIMENT FP - FOOD PRODUCT SW - SURFACE WATER BL- BROAD LEAF VEGETATION DW - DRINKING WATER 10

B. Direct Radiation Starting in 2013 Thermo Luminescent Dosimeters (TLDs) were used to determine the direct (ambient) radiation levels at the designated monitoring locations. The monitoring locations were chosen according to the criteria given in the USNRC Branch Technical Position on Radiation Monitoring (Revision 1, November 1979). The area around the station was divided into 16 radial sectors of 22-1/2 degrees each, corresponding to the cardinal points of the compass. TLDs were placed in each of these sectors. The TLDs were placed in two rings around the station. An inner ring was located as close as possible to the site boundary and an outer ring was located at a distance of 4 to 6 miles from the station. Eleven additional TLDs were located at points of special interest, including two control locations. For routine direct radiation measurements, two sets of the TLDs were used at each of the 43 monitoring locations. One set of TLDs was exchanged on a quarterly basis and a second set ofTLDs was exchanged on a yearly basis. Additional sets of in-transit TLDs were used as control TLDs for the quarterly and annual TLDs.

Mirion Technologies provides and process Thermo Luminescent Dosimeters (TLDs.) The TLDs are used to determine the direct (ambient) radiation levels in designated monitoring locations. Mirion Technologies is accredited by the National Voluntary Laboratory Accreditation Program (NVLAP.)

D. C. Oakley's report "National Radiation Exposure in the United States",

published in 1972, calculated a background radiation dose rate equivalent of 0.22 mR/day for the area surrounding Fort Worth, Texas. This calculated value varies widely with changes in location but represents an appropriate reference value to compare with actual measured TLD doses.

Using data from the pre-operational program for the two years prior to the startup of Unit 1, the quarterly TLDs averaged a calculated dose rate of 0.14 mR/day while the yearly TLDs averaged a calculated dose rate of 0.16 mR/day. The range of measured values from this same two-year period varied from a minimum of 0.11 mR/day to a maximum of 0.22 mR/day.

Table 3 - Environmental Direct Radiation Results contains the measured dose (mR) for each quarterly TLD from each of the 43 monitoring locations. The corresponding quarterly calculated dose rate (mR/day) values are listed as well. The statistical average doses (mR) and dose rate (mR/day) values for each set of quarterly TLDs is also displayed.

Additionally, the table includes the total dose (mR) of all four quarters for each specific location. The table also includes the measured dose (mR) for each annual TLD from each of the 43 monitoring locations. The corresponding annual calculated dose rate (mR/day) values are listed as well. The statistical annual average dose (mR) for the entire set of annual TLDs is reported along with the average dose rate (mR/day) for the entire set of annual TLDs.

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The measured dose rates of all the quarterly TLDs ranged from a minimum of 0.063 mR/day to a maximum of 0.185 mR/day with an average dose rate of 0.123 mR/day. This resulted in an average quarterly dose of 12.5 mR and a total annual dose of 45.0 mR for all of the forty-three monitoring stations.

The measured dose rates of all the annual TLDs ranged from a minimum of 0.081 mR/day to a maximum of 0.166 mR/day with an average dose rate of 0.123 mR/day. This resulted in an average quarterly dose of 11 mR and a total annual dose average of 45 mR for all of the forty-three monitoring stations.

Comparing the pre-operational data and operational data collected through the year 2017 did not produce any anomalies. The direct radiation dose data was consistent with previous years of data during the pre-operational program. Annual Environmental TLDs were compared against the baseline data established in EV-TR-2015-007304-6.

Table 14 - TLD Trend Quarterly Average contains the average quarterly TLD data for the five most current years from each of the 43 monitoring locations. The implementation of the Mirion TLDs and the background subtract method used to report the data from the TLDs accounts for the lower values and accounts for consistent response from each location's total quarterly TLDs to the Annual TLDs.

See CR-2013-004934 for additional clarification on the background subtraction method.

During the year 2017, there were five exceptions to the TLD Program.

CR-2017-004089; While performing quarterly environmental DLR run, quarterly and annual DLR were found to be missing from location R16.

The cap was obviously taken off of the container as it was found on top of a nearby pole.

TR-2017-010731:

Description:

While performing the quarterly environmental change out, it was found that two locations were missing.

The locations are:

1. R32 (32° 18.226N, 097° 52.695W)

2. R25 (32° 16.895N, 097° 47.446W)

It appears R32 location was recently mowed and the TLD fell from cage, it was nowhere to be found. The R25 TLD was on a T post near the gas line on the way to the plant park. The area had been excavated and the T post was nowhere to be found. Each of these location also had an annual TLD with them that were also lost. R32 annual TLD was replaced with a spare.

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CR-2018-001574: While performing the fourth quarter environmental change out, it was found that location R25 (32° 16.895N, 097° 47.446W) was missing. This location was also missing from the last quarter despite the extra cage material used to keep livestock off T Post.

CR-2018-001760: Annual results for Environmental location R25 were not reported due to missing DLR.

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Table 3 - Environmental Direct Radiation Results (Units of mR dose and mR/dav dose rate AVG Annual 1ST 2ND 3RD 4TH QTR Ann ual Average QTR Average QTR Averaae QTR Averaae QTR Averaae TLD TLD TLD Location Total mR/Dav Total mR/Dav Total mR/Dav Total mR/Dav Total Total mR/day N-1.45 R1 14 0.156 11 0.118 12 0.130 13 0.141 12 47 0.128 N-4.4 R2 13 0.145 11 0.118 15 0.163 15 0.163 13 54 0.147 N-6.5 R3 12 0.134 10 0.107 12 0.130 13 0.141 12 47 0.128 N-9.4 R4 13 0.145 11 0.118 12 0.130 13 0.141 12 49 0.133 NNE-1.1 RS 8 0.090 6 0.063 10 0.108 9 0.097 8 33 0.089 NNE-5.65 R6 13 0.145 9 0.096 12 0.130 14 0.152 12 50 0.136 NE-1 .7 R7 10 0.112 7 0.074 8 0.086 10 0.108 8 32 0.087 NE-4.8 RB 14 0.156 11 0.118 13 0.14 1 14 0.152 13 52 0.142 ENE-2 .5 R9 14 0.156 12 0.129 14 0.152 15 0.163 14 55 0.150 ENE-5.0 R10 16 0.178 12 0.129 16 0.174 17 0.185 15 61 0.166 E-0.5 R11 13 0.145 10 0.107 11 0.119 13 0.141 11 44 0.120 E-1.9 R12 11 0.123 9 0.096 11 0.119 12 0.130 11 44 0.120 E-3.5 R13 13 0.145 10 0.107

13 0.141 13 0.141 10 42 0.114 E-4.2 R14 14 0.156 11 0.118 14 0.152 13 0.141 13 52 0.142 ESE-1.4 R15 12 0.134 9 0.096 13 0.141 12 0.130 10 41 0.111 ESE-4.7 R16 *

12 0.129 14 0.152 13 0.141 8 31 0.084 SE-1.3 R17 15 0.167 12 0.129 13 0.141 14 0.152 10 41 0.111 SE-3.85 R18 12 0.134 10 0.107 11 0.119 12 0.130 11 45 0.122 SE-4.6 R19 11 0.123 10 0.107 12 0.130 12 0.130 11 46 0.125 SSE-1.3 R20 12 0.134 10 0.107 13 0.141 11 0.119 11 44 0.120 SSE-4.4 R21 14 0.156 10 0.107 13 0.141 14 0.152 10 40 0.109 SSE-4.5 R22 13 0.145 11 0.118 13 0.141 13 0.141 12 48 0.131 5-1 .5 R23 12 0.134 9 0.096 12 0.130 12 0.130 11 46 0.125 5-4.2 R24 15 0.167 12 0.129 13 0.141 13 0.141 13 51 0.139 SSW-1.1 R25 11 0.123 9 0.096 * * * * * *

SSW-4.8 R26 11 0.123 10 0.107 13 0.141 13 0.141 11 45 0.122 SW-0 .9 R27 13 0.145 10 0.107 12 0.130 13 0.141 12 47 0.128 SW-4.8 R28 12 0.134 9 0.096 11 0.119 11 0.119 10 42 0.114 SW-12.3 (C) R29 12 0.134 11 0.118 12 0.130 13 0.141 12 47 0.128 WSW-1.0 R30 14 0.156 12 0.129 12 0.130 14 0.152 12 50 0.136 WSW-5.35 R31 13 0.145 10 0.107 12 0.130 12 0.130 12 47 0.128 WSW-7.0 (C) R32 13 0.145 11 0.118 *

14 0.152 7 30 0.081 W-1 .0 R33 11 0.1 23 9 0.096 11 0.119 12 0.130 10 42 0.114 W-2.0 R34 12 0.134 9 0.096 11 0.119 11 0.119 10 40 0.109 W-5.5 R35 12 0.134 9 0.096 10 0.108 12 0.130 11 43 0.117 WNW-1.0 R36 13 0.145 11 0.118 13 0.141 13 0.141 12 50 0.136 WNW-5.0 R37 14 0.156 11 0.118 12 0.130 13 0.141 12 50 0.136 WNW-6.7 R38 13 0.145 10 0.107 13 0.130 12 0.130 11 45 0.122 NW-1.0 R39 12 0.134 10 0.107 12 0.130 15 0.163 11 46 0.125 NW-5.7 R40 14 0.156 11 0.118 13 0.141 14 0.152 12 50 0.136 NW-9.9 R41 11 0.123 10 0.107 12 0.130 12 0.130 11 43 0.11 7 NNW-1.35 R42 9 0.101 7 0.074 8 0.086 9 0.097 8 31 0.084 NNW-4.6 R43 14 0.156 12 0.129 14 0.152 14 0.152 13 53 0.144 AVERAGES 13 0.140 10 0.1 09 12 0.132 13 0.139 11 45 0.1 23 14

Table 14 - TLD Trend Quarterly Average (Five most current years)

% Diff2016 2013-2017 % Diff 2017 Location 2013 2014 2015 2016 2017 to 2017 mR Avci to Average R1 11 11 12 13 13 0% 12.00 8%

R2 13 13 14 14 15 7% 13.80 8%

R3 11 12 13 12 13 8% 12.20 6%

R4 12 12 13 12 13 8% 12.40 5%

R5 8 8 9 9 9 0% 8.60 5%

R6 12 12 14 13 14 7% 13.00 7%

R7 7 8 9 8 10 22% 8.40 17%

RS 13 13 15 13 14 7% 13.60 3%

R9 13 13 15 14 15 7% 14.00 7%

R10 14 15 16 15 17 13% 15.40 10%

R11 12 13 13 12 13 8% 12.60 3%

R12 9 10 11 12 12 0% 10.80 11 %

R13 12 11 12 12 13 8% 12.00 8%

R14 13 13 14 13 13 0% 13.20 -2%

R15 11 12 13 12 12 0% 12.00 0%

Legend:

I < 50% I R16 12 12 14 13 13 0% 12.80 2% I >25% I R17 12 12 13 12 14 15% 12.60 11 %

R18 11 11 12 11 12 9% 11.40 5%

R19 11 11 12 13 12 -8% 11.80 2%

R20 12 11 12 12 11 -9% 11 .60 -5%

R21 11 12 13 13 14 7% 12.60 11%

R22 11 12 13 12 13 8% 12.20 6%

R23 11 10 12 12 12 0% 11.40 5%

R24 11 13 14 13 13 0% 12.80 2%

R25 12 12 13 12 11 -9% 12.00 -9%

R26 12 12 13 12 13 8% 12.40 5%

R27 11 12 12 12 13 8% 12.00 8%

R28 11 11 11 13 11 -17% 11.40 -4%

R29 11 11 13 12 13 8% 12.00 8%

R30 12 12 13 12 14 15% 12.60 11 %

R31 10 12 12 12 12 0% 11.60 3%

R32 13 13 14 14 14 0% 13.60 3%

R33 10 10 11 11 12 9% 10.80 11 %

R34 9 10 11 11 11 0% 10.40 6%

R35 10 11 11 10 12 18% 10.80 11 %

R36 13 12 13 12 13 8% 12.60 3%

R37 12 12 13 12 13 8% 12.40 5%

R38 11 11 13 12 12 0% 11 .80 2%

R39 11 11 12 12 15 22% 12.20 21%

R40 11 12 13 13 14 7% 12.60 11 %

R41 11 11 12 11 12 9% 11.40 5%

R42 7 8 8 8 9 12% 8.00 12%

R43 13 13 14 13 14 7% 13.40 4%

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C. Airborne Program Air particulate and air iodine samples were collected each week from the eight monitoring locations described in Table 1 - Comanche Peak Nuclear Power Plant Environmental Radiological Monitoring Program (as seen in section II.A). Each air particulate sample was collected by drawing air through a 47 millimeter-diameter glass-fiber filter. Air iodine was collected by drawing air through an impregnated charcoal cartridge which was connected in series behind the air particulate filter. Shipped to an independent laboratory, air particulate filters were analyzed weekly for gross beta activity and were composited quarterly for gamma spectrometry analysis. Charcoal cartridges were analyzed weekly for Iodine-131.

A total of 416 air particulate filters were collected and analyzed for gross beta activity. The reported gross beta activity ranged from a minimum value of 9.35E-02 pCi/m 3 to a maximum value of 1.0lE-01 pCi/m 3 (control group excluded). Table 4 - Environmental Airborne Particulate Gross Beta Results contains the reported values of all samples. There were no anomalies noted in the data reported for 2017 when compared to pre-operational and previous operational data. Graph 1 - Environmental Air Sample Gross Beta Results - Maximum and Minimum trends the weekly high and low gross beta values to show the seasonal variation of the results as well as providing indication of consistency between the individual monitoring locations.

A total of 416 charcoal cartridges were analyzed for airborne Iodine-131.

Table 5 - Environmental Air Sample Iodine-131 Results contains the reported values of each Iodine-131 analysis, all of which are less than the required lower limit of detection (LLD).

All air particulate filters were collected and composited quarterly and then analyzed by gamma spectrometry. The gamma isotopic data is presented in Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results. Typical of pre-operational and previous operational data results, the only radioactive nuclide identified in all the samples was cosmogenic Beryllium-7, a naturally occurring isotope.

During the year 2017, there were two exceptions to the Airborne Program.

CR-2017-004366; Environmental Air Sampler A8 and State 1 were found to not have power. They both ran for 17 hours1.967593e-4 days 0.00472 hours 2.810847e-5 weeks 6.4685e-6 months and 34 minutes the days of 3-28-17 thru 4-4-17. Loss of power due to rain storms. Contacted electrical group who stated they do not know when power will return.

16

CR-2017-005042; This IR is to document that Environmental Air Sampler A8 and State 1 ran for 17 hours1.967593e-4 days 0.00472 hours 2.810847e-5 weeks 6.4685e-6 months and 42 minutes the days of 4-4-17 thru 4-11-17. This is a continuation IR from CR-2017-004366, which documents the initial power loss to these air samplers. The Johnson County Co-Op power was restored on 4/10/17 at 1440.

Graph 6 -- Enviromental Airborne Particulate Gross Beta Results by Station 2.00E-01 isoe-01 a.

1i.ooe-o1 V)

35.00E-o2 QI i=

V)

x Monthy Sample Dates a A-8 A-7 a A-5 a A-6 {Control) a A-4 a A-3 a A-1 a A-2 {Control) 17

Table 4 -- Environmental Airborne Particulate Gross Beta Results (Units of pCi/m3 A-8 A-7 A-5 A-6 A-4 A-3 A-1 A-2 Location NW-1.0 SW/WSW-0.95 S/SSW-1.2 SW-12.3 SSE-4.5 E-3.5 N-1.45 N-9.4 Date Control Control 01-03-17 2.65E-02 5.22E-02 3.54E-02 4.34E-02 3.09E-02 3.0SE-02 3.74E-02 4.03E-02 01- 10-17 4 .28E-02 7.36E-02 4 .85E-02 5.52E-02 4.00E-02 4.62E-02 4.88E-02 5.25E-02 01-17-17 5.92E-02 5.42E-02 3.43E-02 3.82E-02 2.93E-02 4.85E-02 3.46E-02 3.67E-02 01-24-17 2.90E-02 5.73E-02 2.64E-02 4.09E-02 3.04E-02 3.31E-02 3.57E-02 3.36E-02 01-31-17 2.77E-02 5.llE-02 3.09E-02 3.82E-02 3.30E-02 2.34E-02 3.72E-02 3.34E-02 02 17 3.12E-02 5.37E-02 3.71E-02 4.69E-02 3.42E-02 3.71E-02 4 .09E-02 2.85E-02 02-14-17 4.26E-02 4 .84E-02 3.46E-02 3.28E-02 3.43E-02 3.43E-02 3.84E-02 3.61E-02 02-21-17 3.23E-02 2.82E-02 2.42E-02 2.42E-02 2.30E-02 l .95E-02 l.91E-02 2.14E-02 02-28-17 3.61E-02 4 .13E-02 2.69E-02 3.46E-02 2.70E-02 2.98E-02 2.58E-02 2.78E-02 03-07-17 3.79E-02 2.39E-02 3.lOE-02 2.42E-02 2.62E-02 2.98E-02 2.86E-02 2.0SE-02 03-14-17 2.99E-02 l.94E-02 2.27E-02 2.42E-02 l.89E-02 2. 23E-02 2.43E-02 2.65E-02 03-2 1-17 5.16E-02 2.98E-02 3.70E-02 3.46E-02 4.87E-02 4.36E-02 3.90E-02 3.30E-02 03-28-17 4 .81E-02 3.84E-02 4.30E-02 3.47E-02 4.45E-02 3.94E-02 4 .17E-02 3.69E-02 04-04-17 7.0SE-02* 2.26E-02 l.97E-02 2.64E-02 3.14E-02 2.58E-02 2.68E-02 2.07E-02 04-11-17 2.64E-02

2.09E-02 2.23E-02 2.SOE-02 2.37E-02 2.65E-02 3.22E-02 2.32E-02 04-18-17 6.27E-02 2.93E-02 2.71E-02 3.26E-02 2.70E-02 3.27E-02 3.27E-02 2.42E-02 04-25-17 2.09E-02 2.65E-02 l.58E-02 2.32E-02 2.90E-02 2.32E-02 2.40E-02 l .85E-02 05-02-17 2.75E-02 2.69E-02 3.13E-02 3.36E-02 3.38E-02 3.0lE-02 3.49E-02 2.76E-02 05-09-17 3.22E-02 3.22E-02 3.64E-02 3.0SE-02 3.95E-02 4.42E-02 3.85E-02 2.91E-02 05-16-17 3.60E-02 3.49E-02 3.97E-02 3.40E-02 3.48E-02 3.78E-02 5.90E-02 3.13E-02 05-23-17 2.66E-02 l.95E-02 2.23E-02 2.08E-02 2.llE-02 2.83E-02 2.45E-02 2.57E-02 05-30-17 3.52E-02 3.28E-02 2.81E-02 3.28E-02 3.48E-02 3.33E-02 3.07E-02 2.67E-02 06-06-17 2.14E-02 2.34E-02 2.40E-02 2.39E-02 2.54E-02 2.49E-02 2.67E-02 2.02E-02 06-13-17 3.91E-02 3.94E-02 3.80E-02 4.18E-02 3.71E-02 4.65E-02 3.58E-02 3.53E-02 06-20-17 2.40E-02 2.42E-02 2.70E-02 2.39E-02 l.66E -02 2.61E-02 2.21E-02 2.73E-02 06-27-17 2.93E-02 2.62E-02 3.41E-02 2.32E-02 3.45E-02 2.98E-02 3.22E-02 2.48E-02 07-05-17 2.lOE-02 2.0lE-02 l .94E-02 2.64E-02 2.62E-02 2.26E-02 2.00E-02 l.96E-02 07-11-17 2.49E-02 2.19E-02 2.53E-02 2.98E-02 2.91E-02 2.44E-02 2.38E-02 l.81E-02 07-18-17 2.47E-02 l.99E-02 2.66E-02 2.38E-02 2.58E-02 3.llE-02 2.82E-02 2.34E-02 07-25-17 2.70E-02 1.61E-02 2.90E-02 2.lSE-02 2.30E-02 2.80E-02 2.25E-02 2.06E-02 08 17 3.18E-02 4.25E-02 4.45E-02 l.94E-02 5.0lE-02 3.07E-02 4.08E-02 4.43E-02 08-08-17 5.47E-02 5.38E-02 5.85E-02 2.49E-02 6.98E-02 2.83E-02 4.23E-02 5.87E-02 08-15-17 3.84E-02 5.22E-02 4.54E-02 2.45E-02 5.66E-02 3.llE-02 4 .37E-02 2.41E-03 08-22-17 3.41E-02 4.25E-02 4.30E-02 l .58E-02 l.66E -02 2.llE-02 2.36E-02 2.39E-02 08 17 6.17E-0 2 3.56E-02 3.64E-02 l .75E-02 2.56E-02 3.56E-02 4 .76E-02 3.40E-02 09-05-17 l.OlE-01 5.94E-02 5.67E-02 3.68E-02 3.88E-02 5.21E-02 6.49E-02 5.38E-02 09-12-17 7.49E-02 4.61E-02 4.53E-02 2.14E-02 4.28E-02 4.62E-02 5.0lE-02 4.16E-02 09-19-17 9.35E-02 5.28E-02 5.39E-02 l.71E-02 3.32E-02 5.08E-02 5.66E-02 5.44E-02 09-26-17 6.75E-02 3.33E-02 3.29E-02 2.19E-02 2.42E-02 3.62E-02 3.43E-02 3.40E-02 10-03-17 7.22E-02 5.09E-02 5.18E-02 3.26E-02 3.96E-02 4.52E-02 4 .78E-02 4.43E-02 10-10-17 5.llE-02 3.31E-02 2.SSE-02 2.42E-02 2.73E-02 2.79E-02 3.27E-02 2.57E-02 10-17-17 6.25E-02 3.09E-02 3.75E-02 2.32E-02 3.27E-02 3.08E-02 3.20E-02 2.98E-02 10-24-17 4.12E-02 2.87E-02 2.64E-02 l .82E-02 2.52E-02 3.07E-02 3.45E-02 2.72E-02 10-31-17 2.77E-02 2.44E-02 2.96E-02 2.87E-02 2.42E-02 2.20E-02 2.86E-02 2.47E-02 11-07-17 7.91E-02 5.94E-02 6.31E-02 7.lOE-02 4.32E-02 6.38E-02 7.96E-02 6.23E-02 11-14-17 7.21E-02 5.SlE-02 6.60E-02 6.63E-03 4.20E-02 5.66E-02 7.SSE-02 6.31E-02 11-21-17 4.84E-02 3.94E-02 4.40E-02 5.SOE-02 2.99E-02 3.77E-02 4 .39E-02 4.39E-02 11-28-17 6.SSE-02 5.74E-02 5.33E-02 8.36E-02 3.92E-02 5.92E-02 5.53E-02 5.73E-02 12-05-17 6.22E-02 5.09E-02 4.92E-02 4.03E-02 3.62E-02 5.20E-02 5.62E-02 5.0SE-02 12-12-17 4.19E-02 3.61E-02 3.35E-02 7.45E-02 2.53E-02 3.82E-02 3.58E-02 3.86E-02 12-19-17 4.14E-02 3.65E-02 4.04E-02 l .09E-01 2.59E-02 3.76E-02 4.14E-02 3.32E-02 12-26-17 6.86E-02 5.33E-02 5.91E-02 5.14E-02 3.83E-02 5.66E-02 6.41E-02 6.12E-02 Required LLD 1.00E-02 18

Graph 1 -- Environmental Air Sample Gross Beta Results - Maximum and Minumum 1.20E-01 1.00E-01

~

-,e-6 8.00E-02 6.00E-02

- Maximum

-+- Minimum 0

(/)

~ 4.00E-02 2.00E-02 O.OOE+OO 1 5 9 13 17 21 25 29 33 37 41 45 49 Weekly Data Points

Table 5 -- -- Environmental Air Sample lodine-131 Results (Units of pCi/m3)

All sample analysis results is <MDC values listed below in the following table A-8 A-7 A-5 A-6 A-4 A-3 A-1 A-2 Location NW-1.0 SW/WSW-0.95 S/SSW-1.2 SW-12.3 SSE-4.5 E-3.5 N-1.45 N-9.4 Date Control Control 01-03-17 2.65E-02 5.22E-02 3.54E-02 4.34E-02 3.09E-02 3.0SE-02 3.74E-02 4.03E-02 01-10-17 4.28E-02 7.36E-02 4.85E-02 5.52E-02 4.00E-02 4.62E-02 4.88E-02 5.25E-02 01-17-17 5.92E-02 5.42E-02 3.43E-02 3.82E-02 2.93E-02 4.85E-02 3.46E-02 3.67E-02 01-24-17 2.90E-02 5.73E-02 2.64E-02 4.09E-02 3.04E-02 3.31E-02 3.57E-02 3.36E-02 01-31-17 2.77E-02 5.llE-02 3.09E-02 3.82E-02 3.30E-02 2.34E-02 3.72 E-02 3.34E-02 02-07-17 3.12E-02 5.37E-02 3.71E-02 4.69E-02 3.42E-02 3.71E-02 4.09E-02 2.85E-02 02-14-17 4.26E-02 4.84E-02 3.46E-02 3.28E-02 3.43E-02 3.43E-02 3.84E-02 3.61E-02 02-21-17 3.23E-02 2.82E-02 2.42E-02 2.42E-02 2.30E-02 1.95E-02 l.91E-02 2.14E-02 02-28-17 3.61E-02 4.13E-02 2.69E-02 3.46E-02 2.70E-02 2.98E-02 2.58E-02 2.78E-02 03-07-17 3.79 E-02 2.39E-02 3.lOE-02 2.42E-02 2.62E-02 2.98E-02 2.86E-02 2.0SE-02 03-14-17 2.99 E-02 l.94E-02 2.27E-02 2.42E-02 l.89E-02 2.23E-02 2.43E-02 2.65E-02 03-21-17 5.16E-02 2.98E-02 3.70E-02 3.46E-02 4.87E-02 4.36E-02 3.90E-02 3.30E-02 03-28-17 4.81E-02 3.84E-02 4.30E-02 3.47E-02 4.45E-02 3.94E-02 4.17E-02 3.69E-02 04-04-17 7.0SE-02 2.26E-02 l.97E-02 2.64E-02 3.14E-02 2.58E-02 2.68 E-02 2.07E-02 04-11-17 2.64E-02* 2.09E-02 2.23E-02 2.SOE-02 2.37E-02 2.65E-02 3.22 E-02 2.32E-02 04-18-17 6.27E-02 2.93E-02 2.71E-02 3.26E-02 2.70E-02 3.27E-02 3.27E-02 2.42E-02 04-25-17 2.09E-02 2.65E-02 l.58E-02 2.32E-02 2.90E-02 2.32E-02 2.40E-02 1.85E-02 05-02-17 2.75 E-02 2.69E-02 3.13E-02 3.36E-02 3.38E-02 3.0lE-02 3.49E-02 2.76E-02 05-09-17 3.22E-02 3.22E-02 3.64E-02 3.0SE-02 3.95E-02 4.42E-02 3.85E-02 2.91E-02 05-16-17 3.60E-02 3.49E-02 3.97E-02 3.40E-02 3.48E-02 3.78E-02 5.90E-02 3.13E-02 05-23-17 2.66E-02 l.95E-02 2.23E-02 2.08E-02 2.llE-02 2.83E-02 2.45E-02 2.57E-02 05-30-17 3.52E-02 3.28E-02 2.81E-02 3.28E-02 3.48E-02 3.33E-02 3.07E-02 2.67E-02 06-06-17 2.14E-02 2.34E-02 2.40E-02 2.39E-02 2.54E-02 2.49E-02 2.67E-02 2.02E-02 06-13-17 3.91 E-02 3.94E-02 3.80E-02 4.18E-02 3.71E-02 4.65E-02 3.58E-02 3.53E-02 06-20-17 2.40E-02 2.42E-02 2.70E-02 2.39E-02 l.66E-02 2.61E-02 2.21E-02 2.73E-02 06-27-17 2.93E-02 2.62E-02 3.41E-02 2.32E-02 3.45E-02 2.98E-02 3.22E-02 2.48E-02 07-05-17 2.lOE-02 2.0lE-02 l.94E-02 2.64E-02 2.62E-02 2.26E-02 2.00E-02 l.96E-02 07-11-17 2.49E-02 2.19E-02 2.53E-02 2.98E-02 2.91E-02 2.44E-02 2.38E-02 l.81E-02 07-18-17 2.47E-02 1.99E-02 2.66E-02 2.38E-02 2.58E-02 3.llE-02 2.82E-02 2.34E-02 07-25-17 2.70E-02 1.61E-02 2.90E-02 2.lSE-02 2.30E-02 2.80E-02 2.25E-02 2.06E-02 08-01-17 3.18E-02 4.25E-02 4.45E-02 l .94E-02 5.0lE-02 3.07E-02 4.08E-02 4.43E-02 08-08-17 5.47E-02 5.38E-02 5.85E-02 2.49E-02 6.98E-02 2.83E-02 4.23E-02 5.87E-02 08-15-17 3.84E-02 5.22E-02 4.54E-02 2.45E-02 5.66E-02 3.llE-02 4.37E-02 2.94E-02 08-22-17 3.41E-02 4.25E-02 4.30E-02 l.58E-02 1.66E-02 2.llE-02 2.36E-02 2.39E-02 08-29-17 6.17E-02 3.56E-02 3.64 E-02 l .75E-02 2.56E-02 3.56E-02 4 .76E-02 3.40E-02 09-05-17 l.13E-02 5.94E-02 5.67E-02 3.68E-02 3.88E-02 5.21E-02 6.49E-02 5.38E-02 09-12-17 7.49E-02 4.61E-02 4.53E-02 2.14E-02 4.28E-02 4.62E-02 5.0lE-02 4.16E-02 09-19-17 9.35E-02 5.28E-02 5.39E-02 1.71E-02 3.32E-02 5.08E-02 5.66E-02 5.44E-02 09-26-17 6.75E-02 3.33E-02 3.29E-02 2.19E-02 2.42E-02 3.62E-02 3.43E-02 3.40E-02 10-03-17 7.22E-02 5.09E-02 5.18E-02 3.26E-02 3.96E-02 4.52E-02 4.78E-02 4.43E-02 10-10-17 5.llE-02 3.31E-02 2.SSE-02 2.42E-02 2.73E-02 2.79E-02 3.27E-02 2.57E-02 10-17-17 6.25E-02 3.09E-02 3.75E-02 2.32E-02 3.27E-02 3.08E-02 3.20E-02 2.98E-02 10-24-17 4.12E-02 2.87E-02 2.64E-02 l .82E-02 2.52E-02 3.07E-02 3.45E-02 2.72E-02 10-31-17 2.77E-02 2.44E-02 2.96E-02 2.87E-02 2.42E-02 2.20E-02 2.86E-02 2.47E-02 11-07-17 7.91E-02 5.94E-02 6.31E-02 7.lOE-02 4.32E-02 6.38E-02 7.96E-02 6.23E-02 11-14-17 7.21E-02 5.SlE-02 6.60E-02 6.63E-03 4.20E-02 5.66E-02 7.SSE-02 6.31E-02 11-21-17 4.84E-02 3.94E-02 4.40E-02 5.SOE-02 2.99E-02 3.77E-02 4.39E-02 4.39E-02 11-28-17 6.SSE-02 5.74E-02 5.33E-02 8.36E-02 3.92E-02 5.92E-02 5.53E-02 5.73E-02 12-05-17 6.22E-02 5.09E-02 4.92E-02 4.03E-02 3.62E-02 5.20E-02 5.62E-02 5.0SE-02 12-12-17 4.19E-02 3.61E-02 3.35E-02 7.45E-02 2.53E-02 3.82E-02 3.58E-02 3.86E-02 12-19-17 4.14E-02 3.65E-02 4.04E-02 1.09E-01 2.59E-02 3.76E-02 4.14E-02 3.32E-02 12-26-17 6.86E-02 5.33E-02 5.91E-02 5.14E-02 3.83E-02 5.66E-02 6.41E-02 6.12E-02 Required LLD 1.00E-02 :2 0

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results Composite Dates-1st QTR 12-27-16 thru 03-28-17 Sample Data for: "A-1" 1 Sigma 1Sigma Parameter Result Uncertai MDC LLD Units Qual ifier TPU D.!Y Beryllium-7 1.80E-01 1.33E-02 1.39E-02 N/A 1.56E-02 pCi/m3 Potassi u m-40 6.39E-03 4.25E-03 1.24E-02 N/A 4.26E-03 pCi/m3 u Manganese -54 -1.95E-04 2.29E-04 6.59E-04 N/A 2.34E-04 pCi /m3 u lron -59 -2.SOE-04 1.30E-03 4.22E-03 N/A 1.30E-03 pCi /m3 u Cobalt-57 -9.00E-05 1.34E-04 4.13E-04 N/A 1.36E-04 pCi/m3 u Cobalt-58 4.58E-04 4.73E-04 1.68E-03 N/A 4.85E-04 pCi/m3 u Cobalt-60 6.91E-04 3.34E-04 1.33E-03 N/A 3.71E-04 pCi/m3 u Zinc-65 2.96E-05 6.93E-04 2.31E-03 N/A 6.93E-04 pCi/m3 u Zirconium-95 2.80E-04 8.02E-04 2.72E-03 N/A 8.0SE-04 pCi/m3 u Niobium -95 9.30E-04 4.36E-04 1.59E-03 N/A 4.39E-04 pCi/m3 u Cesium -134 -3.35E-04 2.83E-04 6.19E-04 5.00E-02 2.94E-04 pCi/m3 u Cesium -137 2.64E-04 2.86E-04 1.0lE-03 6.00E-02 2.93E-04 pCi/m3 u Barium-140 -6.65E-02 4.41E-02 1.30E-01 N/A 4.68E-02 pCi/m3 u Lanthanu m-140 1.56E-02 1.12E-02 4.74E-02 N/A 1.18E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-2" 1Sigma 1 Sigma Parameter Result Uncertai MDC LLD Units Qualifier TPU D!Y Berylli um- 7 1.62E-01 1.GSE-02 1. 78E-02 N/A 1.69E-02 pCi/m3 Potassium-40 1.71E-03 4.80E-03 9.SSE-03 N/A 4.SOE-03 pCi/m3 u Manganese-54 -1.37E-04 2.SlE-04 7.35E-04 N/A 2.53E-04 pCi /m3 u lron-59 -3.43E-04 1.53E-03 4.67E-03 N/A 1.53E-03 pCi/m3 u Cobalt-57 3.37E-04 1.47E-04 4.0SE-04 N/A 1.48E-04 pCi/m3 u Cobalt-58 -9.lSE-05 4.0SE-04 1.27E-03 N/A 4.09E-04 pCi/m3 u Cobalt-GO -3.32E-04 1.82E-04 2.07E-04 N/A 1.97E-04 pCi/m3 u Zinc-65 -4.12E-04 7.71E-04 2.24E-03 N/A 7.76E-04 pCi/m3 u Zirconium-95 -6.62E-04 9.65E-04 2.83E-03 N/A 9.77E-04 pCi/m3 u Niobium-95 1.63E-04 5.20E-04 1.nE-03 N/A 5.21E-04 pCi/m3 u Cesium-134 1.17E-04 2.42E-04 8.40E-04 5.00E-02 2.43E-04 pCi/m3 u Cesium-137 6.26E-05 1. 79E-04 5.GSE-04 6.00E-02 1.79E-04 pCi/m3 u Barium-140 4.04E-02 3.65E-02 1.37E-01 N/A 3.77E-02 pCi/m3 u Lanthanum-140 8.44E-03 1.76E-02 6.38E-02 N/A 1.77E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD 21

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-3" 1 Sigma 1 Sigma Parameter Result Uncertai MDC LLD Units Qualifier TPU

!llY Beryllium-7 1.78E-01 1.14E-02 1.0'JE-02 N/A 1.39E-02 pCi/m3 Potassium-40 5.69E-03 6.06E-03 6.31E-03 N/A 6.07E-03 pCi/m3 u Manganese-54 -1.84E-04 2.21E-04 6.49E-04 N/A 2.26E-04 pCi/m3 u lron-59 2.69E-03 1.06E-03 4.49E-03 N/A 1.24E-03 pCi/m3 u Cobalt-57 4.74E-05 1.19E-04 3.95E-04 N/A 1.20E-04 pCi/m3 u Cobalt-58 2.61E-04 4.54E-04 1.54E-03 N/A 4.58E-04 pCi/m3 u Cobalt-60 4.64E-04 2.22E-04 9.0'JE-04 N/A 2.48E-04 pCi/m3 u Zinc- 65 -3.60E-04 6.41E-04 2.0lE-03 N/A 6.46E-04 pCi/m3 u Zirconium-95 -3.77E-04 6.70E-04 2.0SE-03 N/A 6.75E-04 pCi/m3 u Ni obium-95 -3.52E-04 3.72E-04 1.0'JE-03 N/A 3.81E-04 pCi/m3 u Cesium-134 - 2.76E-04 1.81E-04 4.59E-04 5.00E-02 1.92E-04 pCi/m3 u Cesium-137 4.70E-04 2.40E-04 6.91E-04 6.00E-02 2.42E-04 pCi/m3 u Barium-140 -5.26E-02 3.00E-02 8.48E-02 N/A 3.24E-02 pCi/m3 u Lanthanum-14C -6.25E-03 1.43E-02 4.SOE-02 N/A 1.44E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-4" 1 Sigma 1 Sigma Parameter Result Uncertai MDC LLD Units Qualifier TPU

!llY Beryl lium-7 l.48E-01 l .32E-02 l .23E-02 N/A 1.48E-02 pCi/m3 Potassium -40 1.28E-03 3.SlE-03 1.34E-02 N/A 3.53E-03 pCi/m3 u Manganese 3.09E-04 2.69E-04 6.99E-04 N/A 2.79E-04 pCi/m3 u lron -59 -2.96E-04 7.3SE-04 2.19E-03 N/A 7.38E-04 pCi/m3 u Cobalt-57 -3.09E-OS 1.23E-04 3.80E-04 N/A 1.24E-04 pCi/m3 u Cobalt-58 2.37E-04 3.53E-04 l.26E-03 N/A 3.58E-04 pCi/m3 u Cobalt-GO 2.0SE-04 2.70E-04 1.0lE-03 N/A 2.7SE-04 pCi/m3 u Zinc-65 1.28E-04 S.33E-04 1.87E-03 N/A S.34E-04 pCi/m3 u Zirconium-95 6.63E-04 8.42E-04 2.89E-03 N/A 8.56E-04 pCi/m3 u Niobium -95 6.76E-04 4.SlE-04 1.66E-03 N/A 4.78E-04 pCi/m3 u Cesium-134 6.76E-OS 2.22E-04 7.48E-04 S.OOE-02 2.23E-04 pCi/m3 u Cesium-137 1.82E-04 2.19E-04 7.81E-04 6.00E-02 2.23E-04 pCi/m3 u Barium-140 2.96E-02 2.97E-02 l .llE-01 N/A 3.0SE-02 pCi/m3 u Lanthanum-140 -6.73E-03 l.lSE-02 3.07E-02 N/A l.16E-02 pCi/m3 u U - Target isotope was analyzed fo r but not detected above the MDC and LLD 22

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-5" 1 Sigma !Sigma Parameter Result Uncertai MDC LLD Units Qualifier TPU illY Beryllium-7 1.91E-01 1.40E-02 1.30E-02 N/A 1.47E-02 pCi/m3 Potassium-40 7.46E-03 4.17E-03 1. 72E-02 N/A 4.SlE-03 pCi/m3 u Manganese -54 1.llE-04 2.39E-04 8.26E-04 N/A 2.40E-04 pCi/m3 u lron -59 7.GlE-04 1.lGE-03 4.19E-03 N/A 1.17E-03 pCi/m3 u Cobalt-57 7.90E-05 1.34E-04 4.75E-04 N/A 1.35E-04 pCi/m3 u Cobalt-58 5.94E-05 3.88E-04 1.29E-03 N/A 3.88E-04 pCi/m3 u Cobalt-60 6.96E-05 3.24E-04 1.13E-03 N/A 3.25E-04 pCi/m3 u Zinc-GS -1.35E-04 6.00E-04 1.82E-03 N/A 6.00E-04 pCi/m3 u Zirconium-95 -3.34E-05 9.80E-04 3. lGE-03 N/A 9.80E-04 pCi/m3 u Niobium-95 -2.13E-04 4.31E-04 1.23E-03 N/A 4.34E-04 pCi/m3 u Cesium-134 -3.04E-05 2.45E-04 7.74E-04 5.00E-02 2.45E-04 pCi/m3 u Cesium-137 -1.20E-04 252E-04 6.GSE-04 6.00E-02 2.53E-04 pCi/m3 u Barium-140 -3.57E-04 4.37E-02 1.44E-01 N/A 4.37E-02 pCi/m3 u Lanthanum-140 7.69E-03 1.49E-02 5.53E-02 N/A 1.SOE-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-6" 1 Sigma 1 Sigma Parameter Result Uncertai MDC LLD Units Qualifier TPU illY Beryllium-7 1.GSE-01 1.39E-02 1.49E-02 N/A 1.59E-02 pCi/m3 Potassium-40 1.48E-02 4.99E-03 7.07E-03 N/A 5.0SE-03 pCi/m3 UI Manganese-54 -2.22E-04 2.19E-04 6.43E-04 N/A 2.25E-04 pCi/m3 u lron -59 -6.79E-04 9.37E-04 2.62E-03 N/A 9.SOE-04 pCi/m3 u Cobalt-57 -6.21E-05 1.27E-04 3.94E-04 N/A 1.27E-04 pCi/m3 u Cobalt-58 -1.85E-04 3.97E-04 1.28E-03 N/A 4.00E-04 pCi/m3 u Cobalt-60 3.42E-04 1.71E-04 7.97E-04 N/A 1.89E-04 pCi/m3 u Zinc-GS 8.67E-04 6.52E-04 2.SOE-03 N/A 6.82E-04 pCi/m3 u Zirconium-95 -1.91E-04 7.07E-04 2. 16E-03 N/A 7.09E-04 pCi/m3 u Niobium -95 -6.84E-04 5.36E-04 1.39E-03 N/A 5.60E-04 pCi/m3 u Cesium-134 -6.92E-05 2.48E-04 7.SSE-04 5.00E-02 2.49E-04 pCi/m3 u Cesium-137 -1.SOE-04 1.87E-04 5.30E-04 6.00E-02 1.90E-04 pCi/m3 u Barium-140 -1.54E-02 3.58E-02 1.llE-01 N/A 3.GOE-02 pCi/m3 u Lanthanum-140 -2.27E-03 1.73E-02 5.44E-02 N/A 1.73E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy 23

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-7" 1 Sigma 1 Si gma Parameter Result Uncerta i MDC LLD Units Qualifier TPU D!Y Beryllium-7 1.90E-01 1.43E-02 8.84E-03 N/A 1.67E-02 pCi/m3 Potassium-40 -2.61E-03 3.24E-03 l.23E-02 N/A 3.30E-03 pCi/m3 u Manganese-54 -8.47E-05 2.30E-04 7.SOE-04 N/A 2.31E-04 pCi/m3 u lron-59 -4.40E-04 7.19E-04 2.03E-03 N/A 7.27E-04 pCi/m3 u Coba lt-57 1.41E-04 l .OlE-04 3.EiOE-04 N/A l.OGE-04 pCi/m3 u Coba lt -58 1.40E-04 3.93E-04 1.2SE-03 N/A 3.95E-04 pCi/m3 u Cobalt-GO 4.GSE-04 2.17E-04 9.42E-04 N/A 2.43E-04 pCi/m3 u Zinc-65 -2.93E-04 3.59E-04 9.74E-04 N/A 3.GSE-04 pCi/m3 u Zirconium-95 -6.88E-04 8.09E-04 2.30E-03 N/A 8.25E-04 pCi/m3 u Niobium-95 -4.42E-05 3.53E-04 1. lOE-03 N/A 3.53E-04 pCi/m3 u Cesium-134 9.20E-05 2.22E-04 7.42E-04 S.OOE-02 2.23E-04 pCi/m3 u Cesi um-137 2.29E-04 1.74E-04 6. SOE-04 6.00E-02 1.82E-04 pCi/m3 u Barium-140 7.91E-02 3.31E-02 1.20E-01 N/A 3.79E-02 pCi/m3 u Lanthanum-140 4.lSE-03 l.18E-02 4.12E-02 N/A l.19E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-8" 1 Sigma 1 Si gma Parameter Result Uncerta i MDC LLD Units Qua l ifier TPU D!Y Beryll ium-7 1.88E-01 1.32E-02 1.12E-02 N/A 1.SGE-02 pCi/m3 Potassium-40 6.68E-03 3.35E-03 l.33E-02 N/A 3.70E-03 pCi/m3 u Manganese-54 2.36E-04 2.66E-04 9.22E-04 N/A 2.72E-04 pCi/m3 u lron-59 -5.09E-04 l.23E-03 3.89E-03 N/A 1.23E-03 pCi/m3 u Cobalt-57 -l.04E-04 1.21E-04 3.GGE-04 N/A 1.23E-04 pCi/m3 u Cobalt-58 3.47E-04 3.45E-04 1.24E-03 N/A 3.54E-04 pCi/m3 u Cobalt-GO -7.44E-05 2.13E-04 5.46E-04 N/A 2.14E-04 pCi/m3 u Zinc-65 -2.73E-04 5.13E-04 1.32E-03 N/A 5.17E-04 pCi/m3 u Zirconium-95 6.79E-05 7.13E-04 2.35E-03 N/A 7.13E-04 pCi/m3 u Ni obium-95 -6.0GE-04 3.62E-04 9.46E-04 N/A 3.90E-04 pCi/m3 u Cesium-134 -1.19E-04 2.18E-04 6.GSE-04 5.00E-02 2.20E-04 pCi/m3 u Cesium-137 2.40E-04 2.00E-04 7.25E-04 6.00E-02 2.08E-04 pCi/m3 u Barium-140 7.59E-03 2.91E-02 1.0lE-01 N/A 2.92E-02 pCi/m3 u Lanthanum-140 -3.35E-03 l37E-02 4.43E-02 N/A 1.37E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD 24

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Composite Dates 2nd QTR 03-28-17 thru 06-27-17 Sample Data for: "A-1" 1Sigma 1Sigma Parameter Result Uncertai MDC LLD Units Qualifier TPU

!!!Y Beryllium -7 1. 79E-01 1.59E-02 1.52E-02 N/A 1.79E-02 pCi/m3 Potassium -40 1. 79E-03 3. 32E-03 1.31E-02 N/A 3.35E-03 pCi/m3 u Manganese -54 8.43E-05 1.S8E-04 5.83E-04 N/A 1.59E-04 pCi/m3 u lron -59 -1.32E-03 1.26E-03 3.28E-03 N/A 1.30E-03 pCi/m3 u Cobalt-57 -1.80E-04 1.45E-04 3.84E-04 N/A 1.SlE-04 pCi/m3 u Cobalt-58 9.0SE-04 5. 74E-04 2.22E-03 N/A 6.13E-04 pCi/m3 u Cobalt- 60 -1.87E-04 1. 74E-04 3.84E-04 N/A 1.80E-04 pCi/m3 u Zinc-65 4.78E-04 5.70E-04 2.12E-03 N/A 5.81E-04 pCi/m3 u Zirconium -95 -6.93E-04 7. 59E-04 2.0l E-03 N/A 7.77E-04 pCi/m3 u Niobium -95 -5.45E-04 5. 53E-04 1.52E-03 N/A 5.68E-04 pCi/m3 u Cesium -134 2.SOE-04 2.71E-04 9.59E-04 5.00E-02 2.78E-04 pCi/m3 u Cesium -137 -3.49E-06 1.73E-04 4.93E-04 6.00E-02 1.73E-04 pCi/m 3 u Barium -140 -8.64E-02 6. 74E-02 1.80E-01 N/A 7.03E-02 pCi/m3 u Lanthanum-140 2.34E-02 3. 74E-02 1.34E-01 N/A 3.78E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-2" Parameter Result 1 Sigma MDC LLD 1Sigma Units Qualifier Uncertai TPU

!!!Y Beryl lium-7 1. 64E-01 1. 33E-02 1.73E-02 N/A l.56E-02 pCi/m 3 Potassiu m-40 5.85E-04 4. 36E-03 1.33E-02 N/A 4.36E-03 pCi /m3 u Ma nganese -54 l .59E-04 2.S8E-04 9.09E-04 N/A 2.61E-04 pCi/m3 u lron -59 -2.85E-04 1.SOE-03 4.80E-03 N/A 1.SOE-03 pCi/m3 u Cobal t -57 5.37E-05 1.25E-04 4.03E-04 N/A 1.26E-04 pCi/m 3 u Cobalt-58 -3.18E-04 3.70E-04 1.13E-03 N/A 3.78E-04 pCi/m3 u Cobalt-60 S.02E-04 2.33E-04 9.58E-04 N/A 2.61E-04 pCi/m3 u Zinc-65 3.18E-05 7.08E-04 2.0lE-03 N/A 7.08E-04 pCi/m3 u Zirconium-95 8.06E-06 7. 75E-04 2.48E-03 N/A 7.75E-04 pCi/m3 u Niobium -95 -1.81E-04 3.86E-04 1.16E-03 N/A 3.88E-04 pCi/m3 u Cesium-134 -2.93E-05 2.SlE-04 7.60E-04 5.00E-02 2.SlE-04 pCi/m3 u Cesium -137 -1.61E-04 2.34E-04 6.0SE-04 6.00E-02 2.38E-04 pCi/m3 u Barium-140 7.54E-02 8.34E-02 2.94E-01 N/A 8.53E-02 pCi/m3 u Lanthanum-140 4.85E-02 2.64E-02 1.lOE-01 N/A 2.87E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD 25

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-3" Parameter Result 1 Sigma MDC LLD !Sigma Units Qualifier Uncertai TPU

!llY Beryllium-7 l.93E-01 l. 71E-02 l.86E-02 N/A l.93E-02 pCi/m3 Potassium -40 S.S4E-03 6.86E-03 8.93E-03 N/A 6.87E-03 pCi/m3 u Manganese -54 2.93E-04 2.62E-04 9.77E-04 N/A 2.71E-04 pCi/m3 u lron -59 l.86E-03 l.S6E-03 6.24E-03 N/A l.62E-03 pCi/m3 u Cobalt-57 -S.7SE-OS l.SSE-04 4.83E-04 N/A l.SGE-04 pCi/m3 u Cobalt-58 -9.03E-04 S.OOE-04 9.79E-04 N/A S.43E-04 pCi/m3 u Cobalt- GO -2.18E-04 3.03E-04 8.59E-04 N/A 3.07E-04 pCi/m3 u Zinc-65 -4.96E-04 7. 21E-04 2.lSE-03 N/A 7.31E-04 pCi/m3 u Zirconium-95 l.3SE-03 9.67E-04 3.72E-03 N/A l.02E-03 pCi/m3 u Niobium-95 -3.07E-04 S.43E-04 l.57E-03 N/A S.48E-04 pCi/m3 u Cesium -134 -2.09E-04 2.9SE-04 8.31E-04 S.OOE-02 2.99E-04 pCi/m3 u Cesium -137 -4.62E-OS 2.16E-04 6.72E-04 6.00E-02 2.16E-04 pCi/m3 u Barium-140 -1.21E-03 9.46E-02 2.76E-01 N/A 9.46E-02 pCi/m3 u Lanthanum-140 l .4SE-02 2.nE-02 1.03E-01 N/A 2.79E-02 pCi/m3 u U - Target isotope was analyzed fo r but not detected above the MDC and LLD Sample Data for: "A-4" Parameter Result 1 Sigma MDC LLD !Sigma Units Qualifier Uncertai TPU

!llY Beryl lium-7 l.87E-01 1.S4E-02 1.54E-02 N/A l.76E-02 pCi /m3 Potassium -40 6.72E-03 4.4SE-03 1.78E-02 N/A 4.72E-03 pCi/m3 u Mangane se -54 2.16E-04 2.47E-04 9.28E-04 N/A 2.53E-04 pCi/m3 u lron -59 2.03E-03 l.41E-03 S.90E-03 N/A l.49E-03 pCi/m3 u Cobalt-57 2.87E-04 l.87E-04 4.62E-04 N/A 1.88E-04 pCi/m3 u Cobalt-58 -4.36E-04 4.17E-04 1.13E-03 N/A 4.30E-04 pCi/m3 u Cobalt-GO -2.llE-05 2.26E-04 7.0SE-04 N/A 2.26E-04 pCi/m3 u Zinc-65 -4.40E-04 7.21E-04 2.12E-03 N/A 7.29E-04 pCi/m3 u Zirconium-95 S.52E-04 9.29E-04 3.2SE-03 N/A 9.38E-04 pCi/m3 u Niobium -95 -8.66E-OS S.98E-04 1.98E-03 N/A S.98E-04 pCi/m3 u Cesium -134 8.SSE-05 2. 22E-04 7.89E-04 S.OOE-02 2.23E-04 pCi/m3 u Cesium -137 -1.19E-04 2.00E-04 6.23E-04 6.00E-02 2.0lE-04 pCi/m3 u Barium-140 -4.13E-02 7. 29E-02 2.12E-01 N/A 7.36E-02 pCi/m3 u Lanthanum-140 4.33E-02 4.SlE-02 l.73E-01 N/A 4.62E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD 26

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-5" Parameter Result 1 Sigma MDC LLD !Sigma Units Qualifier Uncertai TPU

!llY Beryllium-7 1.61E-01 1.63E-02 1.78E-02 N/A 1.79E-02 pCi/m3 Potassium -40 1.47E-02 S.93E-03 6.97E-03 N/A S.98E-03 pCi/m3 UI Manganese -54 3.0lE-04 2.S6E-04 9.72E-04 N/A 2.66E-04 pCi/m3 u lron -59 1. 79E-03 1.89E-03 7.23E-03 N/A 1.94E-03 pCi/m3 u Cobalt-57 -6. 78E-OS 1. 72E-04 S.37E-04 N/A 1.73E-04 pCi/m3 u Cobalt-58 -1. 78E-05 5.92E-04 1.90E-03 N/A 5.92E-04 pCi/m3 u Cobalt-GO 2.96E-04 3.12E-04 1.19E-03 N/A 3.19E-04 pCi/m3 u Zinc-65 -2. 78E-04 5.2SE-04 1.59E-03 N/A 5.29E-04 pCi/m3 u Zirconium-95 1.34E-04 9.45E-04 3.12E-03 N/A 9.4SE-04 pCi/m3 u Niobium-95 4.3SE-05 3.34E-04 1.llE-03 N/A 3.34E-04 pCi/m3 u Cesium -134 2.75E-04 2.20E-04 8.62E-04 5.00E-02 2.29E-04 pCi/m3 u Cesium -137 8.04E-05 2.39E-04 8.13E-04 6.00E-02 2.40E-04 pCi/m3 u Barium-140 7.2SE-03 7.33E-02 2.46E-01 N/A 7.33E-02 pCi/m3 u Lanthanum- 140 1.62E-02 4.24E-02 1.SOE-01 N/A 4.26E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy Sample Data for: "A-6" Parameter Result 1 Sigma MDC LLD !Sigma Units Qualifier Uncertai

!llY -TPU Beryllium-7 1.89E-01 1.54E-02 1.23E-02 N/A 1.79E-02 pCi/m3 Potassium -40 1.02E-02 4.12E-03 S.92E-03 N/A 4.lSE-03 pCi/m3 Manganese -54 4.08E-04 2.33E-04 9.43E-04 N/A 2.52E-04 pCi/m3 u lron -59 -2. 73E-05 1.68E-03 S.SSE-03 N/A 1.68E-03 pCi/m3 u Cobalt-57 1. 74E-04 1.llE-04 4.00E-04 N/A 1.18E-04 pCi/m3 u Cobalt-58 -5.91E-07 4.19E-04 1.42E-03 N/A 4.19E-04 pCi/m3 u Cobalt-GO -6.47E-05 3.27E-04 1.09E-03 N/A 3.28E-04 pCi/m3 u Zinc-65 7.13E-04 6.69E-04 2.SlE-03 N/A 6.90E-04 pCi/m3 u Zirconium-95 2.29E-03 7.24E-04 3.35E-03 N/A 9.0SE-04 pCi/m3 u Niobium -95 -2. 73E-04 4.9SE-04 1.44E-03 N/A 4.99E-04 pCi/m3 u Cesium-134 -1.56E-04 2.69E-04 7.73E-04 5.00E-02 2.72E-04 pCi/m3 u Cesium-137 7.llE-05 1.62E-04 5.56E-04 6.00E-02 1.63E-04 pCi/m3 u Barium-140 1.0SE-01 7. llE-02 2.72E-01 N/A 7.52E-02 pCi/m3 u Lanthanum-140 2.39E-02 2.6SE-02 1.04E-01 N/A 2.71E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD 27

Table 6 - Envi ronmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-7" Parameter Result 1 Sigma MDC LLD !Sigma Units Qualifier Uncertai TPU filY Beryllium-7 1.53E-01 1.37E-02 8.14E-03 N/A 1.53E-02 pCi/m3 Potassium -40 7. 19E-03 4.0SE-03 1.68E-02 N/A 4.39E-03 pCi/m3 u Manganese -54 -3.12E-04 2.48E-04 6.12E-04 N/A 2.59E-04 pCi/m3 u lron -59 1.44E-04 1.28E-03 4.42E-03 N/A 1.28E-03 pCi/m 3 u Cobalt- 57 -S.17E-OS 1.41E-04 4.33E-04 N/A 1.42E-04 pCi/m3 u Cobalt-58 2.17E-04 3.97E-04 1.40E-03 N/A 4.0lE-04 pCi/m3 u Cobalt-60 -3.71E-04 2.31E-04 4.54E-04 N/A 2.47E-04 pCi/m3 u Zinc-65 4.SSE-05 4. 70E-04 1.61E-03 N/A 4.70E-04 pCi /m3 u Zirconium-95 4.20E-04 7.36E-04 2.60E-03 N/A 7.42E-04 pCi/m3 u Ni obium -95 2.98E-04 4.68E-04 1.6SE-03 N/A 4.73E-04 pCi/m3 u Cesium -134 1.04E-04 1. 74E-04 6.26E-04 S.OOE-02 1.76E-04 pCi/m3 u Cesium -137 -1.S3E-04 1.9SE-04 S.23E-04 6.00E-02 1.98E-04 pCi/m3 u Barium-140 -2.03E-01 9.29E-02 2.16E-01 N/A 1.04E-01 pCi/m3 u Lanthanum-140 -2.90E-02 2.0SE-02 O.OOE+OO N/A 2.16E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-8" Parameter Result 1 Sigma MDC LLD !Sigma Units Qualifier Uncertai TPU filY Beryllium-7 2.14E-01 1.98E-02 1.7SE-02 N/A 2.22E-02 pCi/m3 Potassi u m -40 8.00E-03 5.41E-03 1.03E-02 N/A S.43E-03 pCi/m3 u Manganese -54 -2.48E-04 4.00E-04 1.16E-03 N/A 4.04E-04 pCi/m3 u lron -59 -3.14E-03 2.40E-03 6.43E-03 N/A 2.52E-03 pCi/m3 u Cobalt-57 4.07E-05 1.59E-04 S.21E-04 N/A 1.59E-04 pCi/m3 u Cobalt-58 6.95E-04 S.81E-04 2.19E-03 N/A 6.04E-04 pCi/m3 u Cobalt-60 -2.39E-04 2.SOE-04 S.95E-04 N/A 2.56E-04 pCi/m3 u Zinc-65 S.32E-04 5.04E-04 2.06E-03 N/A S.19E-04 pCi/m3 u Zirconium -95 3.66E-04 1.0SE-03 3.SSE-03 N/A 1.06E-03 pCi/m3 u Niobium -95 -1.43E-04 6.SSE-04 2.02E-03 N/A 6.56E-04 pCi/m3 u Cesium -134 -3.45E-04 3.26E-04 8.47E-04 S.OOE-02 3.36E-04 pCi/m3 u Cesium -137 -3.0SE-04 2.57E-04 6.69E-04 6.00E-02 2.67E-04 pCi/m3 u Barium- 140 -3.93E-02 l.08E-01 3.39E-01 N/A 1.09E-01 pCi/m3 u Lanthanum-140 -3.99E-02 3.80E-02 8.39E-02 N/A 3.91E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD 28

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Composite Dates 3rd QTR 06-27-17 thru 09-26-17 Sample Data for: "A-1" Parameter Re sult 1Sigma MDC LLD 1 Sigma Units Qualifier Uncertainty TPU Beryl lium-7 2.33E-01 2.09E-02 l.91E-02 N/A 2.3SE-02 pCi/m3 Potas sium -40 6.26E-04 3.90E-03 l.48E-02 N/A 3.90E-03 pCi/m3 u Manganese -54 O.OOE+OO 3.0SE-04 9.GSE-04 N/A 0.OOE +00 pCi/m3 u lron -59 6.52E-05 l.27E-03 4.30E-03 N/A 1.27E-03 pCi/m3 u Cobalt-57 1.37E-04 1.70E-04 5.79E-04 N/A 1.73E-04 pCi/m3 u Cobalt-58 - 3.41E-05 4.88E-04 1.53E-03 N/A 4.88E-04 pCi/m3 u Cobalt-GO 3.4SE-04 2.44E-04 l.02E-03 N/A 2.57E-04 pCi/m3 u Zirconium -95 3.33E-04 l.07E-03 3.58E-03 N/A l.07E-03 pCi/m3 u Niob ium -95 - 5.70E-04 6.95E-04 1.98E-03 N/A 7.08E-04 pCi/m3 u Cesium -134 2.83E-04 2.79E-04 9.59E-04 S.OOE-02 2.87E-04 pCi/m3 u Cesium -137 2.37E-04 l.96E-04 7.48E-04 6.00E-02 2.04E-04 pCi/m3 u Barium-140 1.86E-01 l.27E-01 4.84E-01 N/A l.3SE-01 pCi/m3 u La nthanum- 140 -4.GOE-02 3.25E-02 O.OOE+OO N/A 3.43E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-2" Parameter Result 1Sigma MDC LLD 1Sigma Units Qualifier Uncertainty TP U Be ryllium-7 1.57E-01 1.58E-02 l.52E-02 N/A l.74E-02 pCi/m3 Potassium -40 S.72E-03 S.19E-03 1.02E-02 N/A S.20E-03 pCi/m3 u Manganese -54 - l.09E-04 3.SGE-04 9.54E-04 N/A 3.57E-04 pCi/m3 u lron -59 -2.68E-03 l.SOE-03 2.93E-03 N/A 1.63E-03 pCi/m3 u Cobalt-57 4.54E-OS 1.26E-04 4.lOE-04 N/A l.26E-04 pCi /m3 u Cobalt-58 -3.34E-04 4.95E-04 l.44E-03 N/A S.02E-04 pCi/m 3 u Cobalt-GO - 1.0lE-04 l.69E-04 4.49E-04 N/A l.71E-04 pCi/m3 u Zirconium -95 - S.13E-OS 9.12E-04 2.9SE-03 N/A 9.12E-04 pCi/m3 u Niobium -95 - 3.23E-04 S.OGE-04 l.49E-03 N/A S.llE-04 pCi/m3 u Cesium -134 1.90E-04 2.SlE-04 9.00E-04 S.OOE-02 2.SSE-04 pCi/m3 u Cesium -137 l.GOE-05 2.20E-04 7.32E-04 6.00E-02 2.20E-04 pCi/m3 u Barium-140 -2.SOE-02 9.02E-02 2.93E-01 N/A 9.04E-02 pCi/m3 u La nthanum-140 4.46E-04 S.93E-02 1.91E-01 N/A S.93E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD 29

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-3" Parameter Result 1Sigma MDC LLD 1 Sigma Units Qualifier Uncertainty TPU Beryllium-7 l.57E-01 1.58E-02 1.52E-02 N/A l.74E- 02 pCi/m3 Potassium -40 5.72E-03 5.19E-03 l.02E-02 N/A 5.20E-03 pCi/m3 u Mangane se-54 - 1.09E-04 3.SGE-04 9.54E-04 N/A 3.57E-04 pCi/m3 u lron -59 - 2.68E-03 l.SOE-03 2.93E-03 N/A l.63E- 03 pCi/m3 u Cobal t- 57 4.54E-05 l. 26E-04 4.lOE-04 N/A l.26E- 04 pCi/m3 u Cobal t -58 - 3.34E-04 4.95E-04 l.44E-03 N/A 5.02E-04 pCi/m3 u Cobalt-GO -1.0lE-04 l.69E-04 4.49E-04 N/A 1.71E- 04 pCi/m3 u Zirconium -95 - 5.13E-05 9.12E-04 2.95E- 03 N/A 9.12E-04 pCi/m3 u Niobium -95 - 3.23E-04 5.0GE-04 l.49E-03 N/A 5. l lE-04 pCi/m 3 u Ce sium -134 l .90E-04 2.SlE-04 9.00E-04 5.00E-02 2.SSE-04 pCi/m3 u Ce sium -137 l.60E-05 2.20E-04 7.32E- 04 6.00E-02 2.20E-04 pCi/m3 u Barium-140 -2.SOE-02 9.02E-02 2.93E-01 N/A 9.04E- 02 pCi/m3 u La nth anum-140 4.46E-04 5.93E-02 l .91E-01 N/A 5.93E- 02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-4" Paramet er Result 1 Sigm a MDC LLD 1 Sigma Units Quali f ier Uncertaint y TPU Beryllium-7 1.SlE-01 1.48E-02 1.46E-02 N/A 1.64E-02 pCi/m3 Potassium -40 1.25E-02 3.79E-03 9.99E-03 N/A 3.SSE-03 pCi/m3 UI Manganese-54 5.63E-04 2.16E-04 9.44E-04 N/A 2.54E-04 pCi/m3 u lron - 59 3.20E-03 1.46E-03 6.42E-03 N/A 1.GSE-03 pCi/m3 u Cobalt-57 -1.03E-04 1.0SE-04 3.18E-04 N/A 1.lOE-04 pCi/m3 u Cobalt- 58 -1.83E-05 4.llE-04 1.39E-03 N/A 4.llE-04 pCi/m3 u Cobalt-60 5.71E-05 1.84E-04 6.44E-04 N/A 1.SSE-04 pCi/m3 u Zirconium-95 -1.09E-03 6.27E-04 1.0SE-03 N/A 6.78E-04 pCi/m3 u Niobium -95 - 1.20E-04 4.70E-04 1.44E-03 N/A 4.71E-04 pCi/m3 u Cesium-134 -9.82E-05 l.99E-04 5.72E-04 5.00E-02 2.00E-04 pCi/m3 u Cesium -137 -7.82E-05 1.61E-04 4.75E-04 6.00E-02 1.62E-04 pCi/m3 u Barium-140 4.GSE-02 9.20E-02 3.20E-01 N/A 9.27E-02 pCi/m3 u lanthanum-140 2.21E-02 3.21E-02 1.22E-01 N/A 3.25E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy 30

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-5" Parameter Result 1Sigma MDC LLD 1Sigma Units Qualifier Uncertainty TPU Beryllium-7 l.88E-01 l.36E-02 l.71E-02 N/A 1.64E-02 pCi/m3 Potassium-40 1.lSE-02 3.72E-03 3.47E-03 N/A 3.76E-03 pCi/m3 UI Manganese -54 -2.SlE-04 2.04E-04 5.78E-04 N/A 2.12E-04 pCi/m3 u lron-59 4.42E-03 l.67E-03 7.22E-03 N/A l.97E-03 pCi/m3 u Cobalt-57 - l.llE-04 l.23E-04 3.70E-04 N/A l.25E-04 pCi/m3 u Cobalt-58 7.46E-04 4.46E-04 1.76E-03 N/A 4.79E-04 pCi/m3 u Cobalt-60 -3.24E-04 2.37E-04 5.78E-04 N/A 2.49E-04 pCi/m3 u Zirconium-95 -1.18E-03 6.97E-04 1.44E-03 N/A 7.SlE-04 pCi/m3 u Niobium-95 -2.79E-04 4.72E-04 l.37E-03 N/A 4.77E-04 pCi/m3 u Cesium-134 4.GlE-04 2.20E-04 8.99E-04 5.00E-02 2.45E-04 pCi/m3 u Cesi um-137 5.58E-05 2.32E-04 7.60E-04 6.00E-02 2.32E-04 pCi/m3 u Barium-140 l.32E-01 1.02E-01 3.73E-01 N/A 1.07E-01 pCi/m3 u Lanthanum-140 -1.81E-02 2.75E-02 6.87E-02 N/A 2.78E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification fo r gamma spectroscopy Sample Data for: "A-6" Parameter Result 1Sigma MDC LLD 1 Sigma Units Qualifier Uncertainty TPU Beryllium -7 1.67E-01 l.73E-02 1.lSE-02 N/A l.90E-02 pCi/m3 Potassium-40 9.85E- 03 4.23E-03 6.28E-03 N/A 4.26E-03 pCi/m3 UI Manganese-54 l.82E-04 3.03E-04 1.04E-03 N/A 3.0GE-04 pCi/m3 u l ron-59 -7.SlE-04 1.86E-03 5.78E-03 N/A 1.87E-03 pCi/m3 u Cobalt-57 8.0lE-05 1.63E-04 5.42E-04 N/A 1.64E-04 pCi/m3 u Cobalt-58 8.49E-05 3.68E-04 1.23E-03 N/A 3.68E-04 pCi/m3 u Cobalt-60 2.GSE-05 2.20E-04 7.44E-04 N/A 2.20E-04 pCi/m3 u Zirconium-95 9.41E-04 8.35E-04 3.21E-03 N/A 8.63E-04 pCi/m3 u Niobium-95 -8.39E-04 6.63E-04 1.73E-03 N/A 6.92E-04 pCi/m3 u Cesium-134 2.00E-04 2.12E-04 7.96E-04 5.00E-02 2.17E-04 pCi/m3 u Cesium-137 7.95E-05 1.71E-04 5.97E-04 6.00E-02 l.72E-04 pCi/m3 u Barium-140 - l.86E-01 1.20E-01 3.0GE-01 N/A l.28E-01 pCi/m3 u Lanthanum-140 6.25E-02 4.86E-02 2.00E-01 N/A 5.0SE-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification fo r gamma spectroscopy 31

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-7" Parameter Result 1Sigma MDC LLD 1Sigma Units Qualifier Uncertainty TPU Beryllium-7 2.18E-01 1.62E-02 1.GSE-02 N/A 1.91E-02 pCi/m3 Potassium-40 7.64E-03 4.35E-03 1.79E-02 N/A 4.70E-03 pCi/m3 u Manganese -54 -3.40E-04 2.70E-04 7.0SE-04 N/A 2.81E-04 pCi/m3 u lron - 59 -3.07E-03 1.43E-03 1.92E-03 N/A 1.GlE-03 pCi/m3 u Cobalt- 57 2.74E-06 1.30E-04 4.llE-04 N/A 1.30E-04 pCi/m3 u Cobalt- 58 - 1.22E-04 4.84E-04 1.SlE-03 N/A 4.84E-04 pCi/m3 u Cobalt-GO -2.0lE-04 2.40E-04 6.36E-04 N/A 2.44E-04 pCi/m3 u Zirconium-95 7.52E-04 7.87E-04 2.96E-03 N/A 8.07E-04 pCi/m3 u Niobium-95 -2.92E-04 S.90E-04 1.SOE-03 N/A S.94E-04 pCi/m3 u Cesium-134 -2.SlE-04 2.71E-04 7.64E-04 5.00E-02 2.77E-04 pCi/m3 u Cesium-137 -1.SGE-04 1.SSE-04 5.35E-04 6.00E-02 1.88E-04 pCi/m3 u Barium-140 1.GlE-01 8.59E-02 3.SSE-01 N/A 9.39E-02 pCi/m3 u Lanthanum-140 -6.47E-02 3.73E-02 O.OOE+OO N/A 4.03E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-8" Parameter Result 1Sigma MDC LLD 1Sigma Units Qualifier Uncertainty TPU Beryllium-7 2.48E-01 1.86E-02 1.44E-02 N/A 2.18E-02 pCi/m3 Potassium-40 1.88E-02 6.63E-03 1.29E-02 N/A 6.71E-03 pCi/m3 UI Manganese-54 8.75E-05 2.59E-04 8.64E-04 N/A 2.GOE-04 pCi/m3 u lron-59 3.SSE-04 1.20E-03 4.30E-03 N/A 1.21E-03 pCi/m3 u Cobalt-57 1.lSE-05 1.45E-04 4.76E-04 N/A 1.45E-04 pCi/m3 u Cobalt-58 1.42E-04 3.98E-04 1.35E-03 N/A 3.99E-04 pCi/m3 u Cobalt-GO 2.12E-04 1.99E-04 8.08E-04 N/A 2.0SE-04 pCi/m3 u Zirconium -95 3.77E-04 6.40E-04 2.31E-03 N/A 6.46E-04 pCi/m3 u Niobium-95 -1.lSE-03 5.18E-04 9.36E-04 N/A 5.84E-04 pCi/m3 u Cesium-134 -3.95E-04 2.SSE-04 5.88E-04 5.00E-02 2.71E-04 pCi/m3 u Cesium-137 3.71E-04 1.95E-04 7.87E-04 6.00E-02 2.14E-04 pCi/m3 u Barium-140 2.29E-02 8.93E-02 3.03E-01 N/A 8.95E-02 pCi/m3 u Lanthanum-140 -3.78E-02 2.67E-02 O.OOE+OO N/A 2.81E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy 32

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Composite Dates 4th QTR 10-31 -17 thru 12-26-17 Sample Data for: "A-1" Parameter Result 1Sigma MDC LLD 1Sigma Units Qualifier Uncertainty TPU Beryllium -7 1.29E-01 1.09E-02 1.00E-02 N/A 1.24E-02 pCi/m3 Potassium-40 1.03E-02 4.42E-03 7.42E-03 N/A 4.46E-03 pCi/m3 UI Manganese-54 -2.77E-04 1.63E-04 3.49E-04 N/A 1.76E-04 pCi/m3 u lron -59 2.00E-04 1.09E-03 3.59E-03 N/A 1.09E-03 pCi/m3 u Cobalt-57 -8.96E-05 1.17E-04 3.56E-04 N/A 1.19E-04 pCi/m3 u Cobalt-58 2.69E-04 3.82E-04 1.35E-03 N/A 3.88E-04 pCi/m3 u Cobalt-60 1.77E-04 2.04E-04 7.86E-04 N/A 2.08E-04 pCi/m3 u Zinc-65 2.16E-04 3.68E-04 1.33E-03 N/A 3.71E-04 pCi/m3 u Zirconium -95 -2.74E-04 5.98E-04 1.84E-03 N/A 6.0lE-04 pCi/m3 u Niobium-95 -7.89E-04 3.82E-04 9.09E-04 N/A 4.25E-04 pCi/m3 u Cesium-134 -6.40E-05 2.11E-04 6.63E-04 5.00E-02 2.12E-04 pCi/m3 u Cesium -137 1.80E-04 1.69E-04 6.27E-04 6.00E-02 1.74E-04 pCi/m3 u Barium-140 -6.82E-02 2.74E-02 7.07E-02 N/A 3.17E-02 pCi/m3 u Lanthanu m- 140 -1.17E-02 8.38E-03 1.90E-02 N/A 8.82E-03 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy Sample Data for: "A-2" Parame t e r Result 1Sigma MDC LLD 1Sigma Units Qualifier Uncertainty TPU Beryllium -7 1.40E-01 1.35E-02 1.27E-02 N/A 1.49E-02 pCi/m3 Potassi um -40 1.57E-03 4.97E-03 1.96E-02 N/A 4.99E-03 pCi/m3 u Manganese 2.30E-04 2.69E-04 7.44E-04 N/A 2.75E-04 pCi/m3 u lron -59 -1.86E-03 1.20E-03 2.88E-03 N/A 1.28E-03 pCi/m3 u Cobalt-57 1.31E-04 1.44E-04 4.93E-04 N/A 1.47E-04 pCi/m3 u Cobalt-58 - 1.72E-04 3.36E-04 9.66E-04 N/A 3.38E-04 pCi/m3 u Cobal t- 60 1.21E-05 2.lOE-04 7.11E-04 N/A 2.lOE-04 pCi/m3 u Zinc-65 5.SSE-04 5.84E-04 2. 26E-03 N/A 5.98E-04 pCi/m3 u Zi rconium-95 4.31E-04 6.48E-04 2.34E-03 N/ A 6.SSE-04 pCi/m3 u Niobium-95 -4.2SE-04 5.63E-04 1.60E-03 N/A 5.72E-04 pCi/m3 u Cesium -134 - 6.60E-04 2.83E-04 5.18E-04 5.00E-02 3.23E-04 pCi/m3 u Cesium-137 1.60E-04 1.98E-04 7.23E-04 6.00E-02 2.02E-04 pCi/m3 u Barium - 140 -1.25E-02 3.24E-02 1.03E-01 N/A 3.25E-02 pCi/m3 u Lanthanum -140 -4.31E-03 1.25E-02 4.09E-02 N/A 1.25E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD 33

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-3" Parameter Result lSigma MDC LLD lSigma Units Qualifier Uncertainty TPU Beryllium-7 l.40E-01 l.35E-02 l.27E-02 N/A l.49E-02 pCi/m3 Potassi u m-40 l.57E-03 4.97E-03 l.96E-02 N/A 4.99E-03 pCi/m3 u Manganese-54 -2.30E-04 2.69E-04 7.44E-04 N/A 2.75E-04 pCi/m3 u lron-59 -l.86E-03 l.20E-03 2.88E-03 N/A l.28E-03 pCi/m3 u Cobalt-57 l.31E-04 l.44E-04 4.93E-04 N/A l.47E-04 pCi/m3 u Cobalt-58 -l.72E-04 3.36E-04 9.66E-04 N/A 3.38E-04 pCi/m3 u Cobalt-60 l.21E-05 2.lOE-04 7.llE-04 N/A 2.lOE-04 pCi/m3 u Zinc-65 5.SSE-04 5.84E-04 2.26E-03 N/A 5.98E-04 pCi/m3 u Zirconium -95 4.31E-04 6.48E-04 2.34E-03 N/A 6.SSE-04 pCi/m3 u Niobium-95 -4.25E-04 5.63E-04 l .60E-03 N/A 5.72E-04 pCi/m3 u Cesium -134 -6.60E-04 2.83E-04 5.18E-04 5.00E-02 3.23E-04 pCi/m3 u Cesium -137 l.60E-04 l .98E-04 7.23E-04 6.00E-02 2.02E-04 pCi/m3 u Barium - 140 -l.25E-02 3.24E-02 l.03E-01 N/A 3.25E-02 pCi/m3 u Lanthanum- 140 -4.31E-03 l.25E-02 4.09E-02 N/A l.25E-02 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertai n identifi cation fo r gamma spectroscopy Sample Data for: "A-4" Parameter Result lSigma MDC LLD lSigma Units Qualifier Uncertainty TPU Beryllium-7 l.41E-01 l.llE-02 6.27E-03 N/A l.29E-02 pCi/m3 Potassium-40 6.95E-03 3.07E-03 3.84E-03 N/A 3.09E-03 pCi/m3 UI Manganese l.77E-04 2.16E-04 5.99E-04 N/A 2.20E-04 pCi/m3 u lron-59 -1.12E-03 1.llE-03 3.18E-03 N/A l.lSE-03 pCi/m3 u Cobalt-57 4.llE-05 l.lOE-04 3.68E-04 N/A l.llE-04 pCi/m3 u Cobalt-58 7.0lE-05 3.67E-04 l.21E-03 N/A 3.67E-04 pCi/m3 u Cobalt-60 8.96E-05 2.17E-04 7.73E-04 N/A 2.18E-04 pCi/m3 u Zinc-65 5.18E-04 5.08E-04 2.0lE-03 N/A 5.22E-04 pCi/m3 u Zirconium-95 7.27E-05 6.00E-04 l.97E-03 N/A 6.00E-04 pCi/m3 u Niobium-95 -7.43E-05 3.60E-04 l.13E-03 N/A 3.61E-04 pCi/m3 u Cesium-134 -2.0SE-05 2.21E-04 6.98E-04 5.00E-02 2.21E-04 pCi/m3 u Cesium- 137 4.42E-05 2.12E-04 7.07E-04 6.00E-02 2.13E-04 pCi/m3 u Barium -140 5.65E-03 2.44E-02 8.25E-02 N/A 2.45E-02 pCi/m3 u Lanthanum-140 4.77E-03 9.07E-03 3.29E-02 N/A 9.14E-03 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD 34

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-5" Parameter Result lSigma MDC LLD 1 Sigma Units Qualifier Uncertainty TPU Beryllium -7 9.94E-02 l.02E-02 9.95E-03 N/A l.13E-02 pCi/m3 Potassi u m-40 4.48E-03 3.62E-03 l.44E-02 N/A 3.77E-03 pCi/m3 u Manganese-54 l.33E-04 1.42E-04 5.47E-04 N/A l.45E-04 pCi/m3 u lron-59 l.12E-04 7.39E-04 2.52E-03 N/A 7.40E-04 pCi/m3 u Cobalt-57 7.83E-06 9.35E-05 3.03E-04 N/A 9.35E-05 pCi/m3 u Cobalt-58 4.SlE-04 2.89E-04 l .16E-03 N/A 3.08E-04 pCi/m3 u Cobalt-60 -9.0SE-05 l.64E-04 4.62E-04 N/A l.66E-04 pCi/m3 u Zinc-65 5.SSE-05 4.07E-04 l .38E-03 N/A 4.07E-04 pCi/m3 u Zirconium-95 -3.79E-04 6.80E-04 l.99E-03 N/A 6.86E-04 pCi/m3 u Niobium-95 9.SOE-04 4.31E-04 l.67E-03 N/A 4.86E-04 pCi/m3 u Cesium-134 3.57E-04 2.45E-04 9.42E-04 5.00E-02 2.59E-04 pCi/m3 u Cesium - 137 -7.36E-05 2.0lE-04 6.lSE-04 6.00E-02 2.0lE-04 pCi/m3 u Barium - 140 l.54E-02 2.19E-02 7.67E-02 N/A 2.22E-02 pCi/m3 u Lanthanum -140 - l.79E-02 7.24E-03 l.58E-02 N/A 8.37E-03 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD Sample Data for: "A-6" Parameter Result lSigma MDC LLD lSigma Units Qualifier Uncertainty TPU Beryllium -7 l .43E-01 l.16E-02 9.40E-03 N/A l.34E-02 pCi/m3 Potassium-40 6.29E-03 4.44E-03 6.89E-03 N/A 4.45E-03 pCi/m3 u Manganese 2.09E-04 2.31E-04 5.27E-04 N/A 2.37E-04 pCi/m3 u lron-59 - l .02E-03 l.09E-03 3.19E-03 N/A l.12E-03 pCi/m3 u Cobalt-57 2.43E-04 l.09E-04 4.02E-04 N/A l.23E-04 pCi/m3 u Cobalt-58 l.22E-04 3.43E-04 l.lSE-03 N/A 3.44E-04 pCi/m3 u Cobalt-60 l.57E-04 2.09E-04 7.78E-04 N/A 2.12E-04 pCi/m3 u Zinc-65 4.SOE-04 3.80E-04 l .46E-03 N/A 3.95E-04 pCi/m3 u Zirconium -95 -8.90E-04 6.63E-04 l.71E-03 N/A 6.96E-04 pCi/m3 u Niobium-95 9.09E-05 3.llE-04 l.04E-03 N/A 3.llE-04 pCi/m3 u Cesium-134 9.37E-05 2.46E-04 8.22E-04 5.00E-02 2.47E-04 pCi/m3 u Cesium-137 l.77E-05 l.81E-04 5.92E-04 6.00E-02 l.81E-04 pCi/m3 u Barium-140 -2.97E-03 2.64E-02 7.62E-02 N/A 2.64E-02 pCi/m3 u Lanthanum- 140 2.12E-03 7.71E-03 2.68E-02 N/A 7.72E-03 pCi/m3 u U - Target isotope was analyzed fo r but not detected above the MDC and LLD 35 L

Table 6 - Environmental Air Particulate Composite Gamma Isotopic Results (continued)

Sample Data for: "A-7" Parameter Result lSigma MDC LLD lSigma Units Qualifier Uncertainty TPU Beryllium -7 l.54E-01 l.llE-02 9.76E-03 N/A l.34E-02 pCi/m3 Potassium-40 9.60E-03 3.6SE-03 4.87E-03 N/A 3.68E-03 pCi/m3 UI Manganese 2.88E-04 2.47E-04 6.40E-04 N/A 2.56E-04 pCi/m3 u lron -59 9.48E-04 8.29E-04 3.lSE-03 N/A 8.59E-04 pCi/m3 u Cobalt-57 -9.98E-OS 9.71E-05 3.16E-04 N/A 9.99E-OS pCi/m3 u Cobalt-58 -2.86E-04 3.53E-04 1.lOE-03 N/A 3.59E-04 pCi/m3 u Cobalt-60 1.87E-OS 1.53E-04 S.07E-04 N/A l.53E-04 pCi/m3 u Zinc-65 -2.27E-04 4.00E-04 l.20E-03 N/A 4.03E-04 pCi/m3 u Zi rconi um -95 -7.47E-04 6.14E-04 l.83E-03 N/A 6.38E-04 pCi/m3 u Niobium-95 4.67E-04 3.67E-04 1.36E-03 N/A 3.83E-04 pCi/m3 u Cesium -134 2.lSE-04 2.58E-04 8.36E-04 S.OOE-02 2.63E-04 pCi/m3 u Cesium -137 -1.0lE-05 1.84E-04 6.21E-04 6.00E-02 l.84E-04 pCi/m3 u Barium-140 1.20E-02 2.09E-02 7.07E-02 N/A 2.llE-02 pCi/m3 u Lanthanum-140 - l.SOE-02 8.17E-03 1.4SE-02 N/A 8.90E-03 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy Sample Data for: "A-8" Parameter Result lSigma MDC LLD 1 Sigma Units Qualifier Uncertainty TPU Beryllium -7 1.68E-01 l.06E-02 9.21E-03 N/A l.33E-02 pCi/m3 Potassium -40 9.20E-03 2.83E-03 6.44E-03 N/A 2.87E-03 pCi/m3 UI Manganese 6.18E-OS l.40E-04 4.SOE-04 N/A l.41E-04 pCi/m3 u lron -59 3.79E-OS 6.99E-04 2.34E-03 N/A 6.99E-04 pCi/m3 u Cobalt-57 -8.24E-05 1.0lE-04 3.llE-04 N/A l.03E-04 pCi/m3 u Cobalt-58 2.31E-05 2.68E-04 9.20E-04 N/A 2.68E-04 pCi/m3 u Cobalt-60 4.81E-05 l.67E-04 5.73E-04 N/A l.68E-04 pCi/m3 u Zinc-65 3.86E-04 4.17E-04 1.54E-03 N/A 4.27E-04 pCi/m3 u Zirconium-95 l.27E-04 4.53E-04 1.SOE-03 N/A 4.54E-04 pCi/m3 u Niobium-95 -7.00E-05 2.68E-04 6.SSE-04 N/A 2.69E-04 pCi/m3 u Cesium -134 -1.61E-04 1.64E-04 4.58E-04 5.00E-02 l.68E-04 pCi/m3 u Cesium -137 6.14E-OS l.22E-04 4.19E-04 6.00E-02 l.23E-04 pCi/m3 u Barium-140 -4.lOE-03 l.70E-02 5.41E-02 N/A l.70E-02 pCi/m3 u Lanthanum -140 -6.24E-03 6.81E-03 1.72E-02 N/A 6.97E-03 pCi/m3 u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification fo r gamma spectroscopy 36

D. Discharge Pathway Surface Water Program Discharge Pathway Surface water monitoring stations are found at four locations as detailed in Table 1 - Comanche Peak Nuclear Power Plant Radiological Environmental Monitoring Program.

Location N-1.5 provides samples representative of Squaw Creek reservoir surface water at a location beyond significant influence of the plant discharge. Location ESE-1.4 provides samples representative of discharges from Squaw Creek reservoir downstream to Squaw Creek and to Lake Granbury via an installed return line. [NOTE: The installed return line to Lake Granbury has never been used to send water back to Lake Granbury.]

Location NE-7.4 provides samples of Lake Granbury surface water downstream of the discharge from the return line from Squaw Creek reservoir. A control sample is obtained from the Brazos River, upstream of Lake Granbury at location N-19.3. Discharge Pathway Surface water samples from Squaw Creek reservoir locations were collected weekly and composited for monthly gamma isotopic analysis . Samples from Lake Granbury locations were collected monthly and analyzed by gamma spectrometry. All Discharge Pathway Surface Water samples were also composited quarterly by location for tritium analysis.

All Discharge Pathways Surface Water samples were collected as required. Table 7 -- Environmental Discharge Pathway Surface Water Tritium and Gamma Isotopic Results contains the reported values. Forty-eight samples were analyzed by gamma spectrometry. All results for the required radionuclides were reported as less than the required LLDs. Sixteen quarterly composited samples were analyzed for tritium. The results of the reported tritium values for Squaw Creek reservoir were in line with expected concentrations. The tritium values ranged from a high of 1.66E+04 pCi/1 to a low of 9.78E+03 pCi/1. The results from Lake Granbury were all less than the required LLDs as expected. The tritium concentration reported in Squaw Creek is well below the action level of 3.0E+4 pCi/1 and is following the expected concentration variations based on fuel cycles, power histories and reservoir makeup due to rain and pump transfers from Lake Granbury. Graph 2 - Environmental Surface Water Tritium Results indicates the current results and the short-term trend of the tritium concentration in Squaw Creek reservoir, Squaw Creek spillway, Lake Granbury, and Brazos River (control location).

Graph 3 - Squaw Creek Maximum Tritium Values trends the reservoir tritium concentration since it was first detected in 1990 after Unit 1 startup. Squaw Creek reservoir tritium is a direct product from the operation of CPNPP.

37

There should not be any significant changes in the tritium concentrations in the near future and no action levels are anticipated. A review of pre-operational and operational data indicated the 2017 results were both expected and consistent with previous data and that no anomalies had occurred.

During the year 2017, there were no exceptions to the Discharge Pathway Surface Water Program.

38

Table 7 -- Environmental Discharge Pathway Surface Water Tritium and Gamma Isotopic Results Sample Data for: "SW-1" U - Target isotope was analyzed for but not detected above the MDC and LLD DL -MDC > LLD UI - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qualifier 1/17/2017 10:28 Beryllium -7 6.SSE+OO 1.60E+Ol N/A pCi/L u 1/17/201710:28 Potassium-40 6.64E+OO 1.54E+Ol N/A pCi/L u 1/17/201710:28 Manganese-54 1.0lE+OO 1.56E+OO 1.SOE+Ol pCi/L u 1/17/201710:28 lron-59 -3 .16E+OO 3.54E+OO 3.00E+Ol pCi/L u 1/17/201710:28 Cobalt-58 8.28E-01 1.68E+OO 1.SOE+Ol pCi/L u 1/17/201710:28 Cobalt-60 1.83E-01 1.47E+OO 1.SOE+Ol pCi/L u 1/17/2017 10:28 Zinc-65 -3 .lSE-01 3.0lE+OO 3.00E+Ol pCi/L u 1/17/201710:28 Zirconium-95 1.32E+OO 3.07E+OO 1.SOE+Ol pCi/L u 1/17/201710:28 Niobium-95 7.43E-01 1.73E+OO 1.SOE+Ol pCi/L u 1/17/201710:28 lodine-131 1.2SE+OO 9.99E+OO N/A pCi/L u 1/17/2017 10:28 Cesium-134 1.41E-01 1.68E+OO 1.SOE+Ol pCi/L u 1/17/2017 10:28 Cesium-137 -3 .66E-01 1.53E+OO 1.80E+01 pCi/L u 1/17/201710:28 Barium-140 3.7SE+OO 1.81E+Ol 1.SOE+Ol pCi/L DLU 1/17/201710:28 Lanthanum-140 S.llE-01 S.71E+OO 1.SOE+Ol pCi/L u 2/14/2017 21:43 Beryllium -7 -1.96E-01 1.39E+01 N/A pCi/L u 2/14/2017 21:43 Potassium-40 4.80E+01 1.41E+01 N/A pCi/L 2/14/2017 21:43 Manganese-54 3.60E-01 1.44E+OO 1.SOE+Ol pCi/L u 2/14/2017 21 :43 lron-59 -7.64E-01 3.16E+OO 3.00E+Ol pCi/L u 2/14/2017 21 :43 Cobalt-58 -3 .lOE-01 1.49E+OO 1.SOE+Ol pCi/L u 2/14/2017 21 :43 Cobalt-60 6.82E-01 1.SlE+OO 1.SOE+Ol pCi/L u 2/14/2017 21:43 Zinc-65 -1.98E-01 3.18E+OO 3.00E+Ol pCi/L u 2/14/2017 21 :43 Zirconium-95 2.46E-02 2.81E+OO 1.SOE+Ol pCi/L u 2/14/2017 21:43 Niobium-95 1.69E-01 1.64E+OO 1.SOE+Ol pCi/L u 2/14/2017 21 :43 lodine-131 -1.37E+OO 7.74E+OO N/A pCi/L u 2/14/2017 21:43 Cesium-134 1.31E-01 1.SSE+OO 1.SOE+Ol pCi/L u 2/14/2017 21:43 Cesium-137 9.09E-02 1.40E+OO 1.80E+Ol pCi/L u 2/14/2017 21 :43 Barium-140 2.41E+OO 1.SOE+Ol 1.SOE+Ol pCi/L DLU 2/14/2017 21 :43 Lanthanum-140 2.67E+OO S.52E+OO 1.SOE+Ol pCi/L u 3/14/2017 22:19 Beryllium-7 S.27E-01 1.40E+Ol N/A pCi/L u 3/14/2017 22 :19 Potassium-40 9.59E+OO 1.53E+Ol N/A pCi/L u 3/14/2017 22 :19 Manganese-54 4.28E-02 1.39E+OO 1.SOE+Ol pCi/L u 3/14/2017 22: 19 lron-59 2.3SE-01 3.43E+OO 3.00E+Ol pCi/L u 3/14/2017 22:19 Cobalt-58 2.70E-01 1.43E+OO 1.SOE+Ol pCi/L u 3/14/2017 22 :19 Cobalt-60 -1.9SE+OO 1.47E+OO 1.SOE+Ol pCi/L u 3/14/2017 22 :19 Zinc-65 -6.02E-01 2.63E+OO 3.00E+Ol pCi/L u 3/14/2017 22:19 Zirconium-95 6.83E-01 2.SlE+OO 1.SOE+Ol pCi/L u 3/14/2017 22:19 Niobium-95 8.31E-01 1.63E+OO 1.SOE+Ol pCi/L u 3/14/2017 22 :19 lodine-131 -3.29E-01 7.78E+OO N/A pCi/L u 3/14/2017 22:19 Cesium-134 2.2SE-01 1.3SE+OO 1.SOE+Ol pCi/L u 39

3/14/2017 22:19 Cesium-137 8.71E-02 l.30E+OO l.80E+Ol pCi/L u 3/14/2017 22: 19 Barium-140 -6.32E+OO l.28E+Ol l.50E+Ol pCi/L u 3/14/2017 22:19 Lanthanum-140 l.12E-01 4.96E+OO l.50E+Ol pCi/L u 4/13/2017 10:20 Beryllium-7 3 .52E+OO l.59E+Ol N/A pCi/L u 4/13/2017 10:20 Potassium-40 4 .16E+Ol 1.41E+Ol N/A pCi/L 4/13/2017 10:20 Manganese-54 -3.31E-01 1.48E+OO l.50E+Ol pCi/L u 4/13/2017 10:20 lron-59 -l.39E+OO 3 .68E+OO 3 .00E+Ol pCi/L u 4/13/2017 10:20 Cobalt-58 -5.74E-01 l.62E+OO l.50E+Ol pCi/L u 4/13/2017 10:20 Cobalt-60 -5.14E-01 1.44E+OO l.50E+Ol pCi/L u 4/13/2017 10:20 Zinc-65 -3 .22E-01 3.0lE+OO 3 .00E+Ol pCi/L u 4/13/2017 10:20 Zirconium -95 2.llE+OO 3.39E+OO l.50E+Ol pCi/L u 4/13/2017 10:20 Niobium-95 -l.93E+OO 2.00E+OO l.50E+Ol pCi/L u 4/13/2017 10:20 lodine-131 -6.69E-01 7.48E+OO N/A pCi/L u 4/13/2017 10:20 Cesium-134 -l.32E-02 l.69E+OO l.50E+Ol pCi/L u 4/13/2017 10:20 Cesium-137 l.29E+OO l.81E+OO l.80E+Ol pCi/L u 4/13/2017 10:20 Barium-140 -9.42E+OO 1.40E+Ol l.50E+Ol pCi/L u 4/13/2017 10:20 Lanthanum-140 -9.84E-01 4.91E+OO l.50E+Ol pCi/L u 5/15/2017 22:32 Beryllium-7 -l.85E+OO l.27E+Ol N/A pCi/L u 5/15/2017 22:32 Potassium-40 3 .18 E+OO l.52E+Ol N/A pCi/L u 5/15/2017 22:32 Manganese-54 2.18E-01 l.18E+OO l.50E+Ol pCi/L u 5/15/2017 22 :32 lron-59 3.93E-01 3.22E+OO 3.00E+Ol pCi/L u 5/15/2017 22 :32 Cobalt-58 2.84E-02 l.45E+OO l.50E+Ol pCi/L u 5/15/2017 22 :32 Cobalt-60 7.47E-01 l.37E+OO l.50E+Ol pCi/L u 5/15/2017 22 :32 Zinc-65 l.28E-01 2.33E+OO 3 .00E+Ol pCi/L u 5/15/2017 22:32 Zirconium-95 l.54E+OO 2.58E+OO l.50E+Ol pCi/L u 5/15/2017 22 :32 Niobium-95 3.77E-01 l.53E+OO l.50E+Ol pCi/L u 5/15/2017 22 :32 lodine-131 3 .13E+OO 7.94E+OO N/A pCi/L u 5/15/2017 22:32 Cesium-134 4.51E-01 l.33E+OO l.50E+Ol pCi/L u 5/15/2017 22:32 Cesium -137 -6.41E-02 l.24E+OO l.80E+Ol pCi/L u 5/15/2017 22:32 Barium-140 5 .05E+OO l.36E+Ol l.50E+Ol pCi/L u 5/15/2017 22:32 Lanthanum-140 -l.62E+OO 4.81E+OO l.50E+Ol pCi/L u 6/14/2017 9:51 Beryllium-7 -l.61E+OO l.llE+Ol N/A pCi/L u 6/14/2017 9 :51 Potassium -40 2.81E+Ol l.02E+Ol N/A pCi/L 6/14/2017 9:51 Manganese-54 -7.16E-01 l.07E+OO l.50E+Ol pCi/L u 6/14/2017 9:51 lron-59 2.03E-01 2.33E+OO 3 .00E+Ol pCi/L u 6/14/2017 9:51 Cobalt-58 -2.90E-01 l.12E+OO l.50E+Ol pCi/L u 6/14/2017 9 :51 Cobalt-60 6.86E-01 l.17E+OO l.50E+Ol pCi/L u 6/14/2017 9:51 Zinc-65 l.77E-01 2.35E+OO 3.00E+Ol pCi/L u 6/14/2017 9:51 Zirconium-95 -l.50E-01 2.16E+OO l.50E+Ol pCi/L u 6/14/2017 9:51 Niobium-95 l.20E+OO l.29E+OO l.50E+Ol pCi/L u 6/14/2017 9:51 lodine-131 -l.33E+OO 4.59E+OO N/A pCi/L u 6/14/2017 9:51 Cesium-134 8.91E-02 l.23E+OO l.50E+Ol pCi/L u 6/14/2017 9:51 Cesium-137 -1.45E-01 l.14E+OO l.80E+Ol pCi/L u 6/14/2017 9 :51 Barium-140 2.30E-01 9.68E+OO l.50E+Ol pCi/L u 6/14/2017 9 :51 Lanthanum-140 5.18E-01 3.18E+OO l.50E+Ol pCi/L u 7/13/2017 10:04 Beryllium-7 -l.86E-01 l.29E+Ol N/A pCi/L u 40

7/13/2017 10:04 Potassium-40 l.68E+Ol l.42E+Ol N/A pCi/L UI 7/13/2017 10:04 Manganese-54 -3.74E-01 l.19E+OO l.50E+Ol pCi/L u 7/13/2017 10:04 lron-59 -1.40E+OO 3.19E+OO 3 .00E+Ol pCi/L u 7/13/2017 10:04 Cobalt-58 -4.40E-01 l.50E+OO l.50E+Ol pCi/L u 7/13/2017 10:04 Cobalt-60 -9 .87E-01 l.34E+OO l.50E+Ol pCi/L u 7/13/2017 10:04 Zinc-65 l.37E+OO 3.15E+OO 3.00E+Ol pCi/L u 7/13/2017 10:04 Zirconium-95 7 .16E-01 2.71E+OO l.50E+Ol pCi/L u 7/13/2017 10:04 Niobium-95 l.76E-01 l.52E+OO l.50E+Ol pCi/L u 7/13/2017 10:04 lodine-131 -l.37E+OO 4.66E+OO N/A pCi/L u 7/13/2017 10:04 Cesium-134 l.44E+OO l.53E+OO l.50E+Ol pCi/L u 7/13/2017 10:04 Cesium-137 -l.5 2E+OO 1.30E+OO l.80E+Ol pCi/L u 7/13/2017 10:04 Barium-140 2.36E+OO l.02E+Ol l.50E+Ol pCi/L u 7/13/2017 10:04 Lanthanum-140 -l.91E+OO 3.16E+OO l.50E+Ol pCi/L u 8/15/2017 9:48 Beryllium-7 -4 .91E+OO l.26E+Ol N/A pCi/L u 8/15/2017 9 :48 Potassium -40 2.03E+Ol l.45E+Ol N/A pCi/L UI 8/15/2017 9:48 Manganese-54 -4.42E-01 l.25E+OO l.50E+Ol pCi/L u 8/15/2017 9:48 lron -59 -4 .98E-01 3.37E+OO 3.00E+Ol pCi/L u 8/15/2017 9:48 Cobalt-58 5 .26E-01 1.44E+OO l.50E+Ol pCi/L u 8/15/2017 9 :48 Cobalt-60 7 .57E-01 l.56E+OO l.50E+Ol pCi/L u 8/15/2017 9:48 Zinc-65 -2.14E-01 2.96E+OO 3.00E+Ol pCi/L u 8/15/2017 9 :48 Zirconium -95 4.19E-01 2.81E+OO l.50E+Ol pCi/L u 8/15/2017 9:48 Niobium-95 -9.82E-02 l.55E+OO l.50E+Ol pCi/L u 8/15/2017 9:48 lodine-131 -2 .58E+OO 5.54E+OO N/A pCi/L u 8/15/2017 9 :48 Cesium-134 8 .66E-01 l.55E+OO l.50E+Ol pCi/L u 8/15/2017 9:48 Cesium -137 -l.09E-01 l.42E+OO l.80E+Ol pCi/L u 8/15/2017 9:48 Barium-140 -l.50E+OO l.08E+Ol l.50E+Ol pCi/L u 8/15/2017 9:48 Lanthanum -140 -l.94E+OO 4 .29E+OO l.50E+Ol pCi/L u 9/13/2017 22:04 Beryllium-7 -3 .39E+OO l.56E+Ol N/A pCi/L u 9/13/2017 22 :04 Potassium-40 -8.79 E+OO 2.65E+Ol N/A pCi/L u 9/13/2017 22:04 Manganese-54 7.03E-02 l.64E+OO l.50E+Ol pCi/L u 9/13/2017 22:04 lron-59 -l.23E-01 3 .83E+OO 3.00E+Ol pCi/L u 9/13/2017 22 :04 Cobalt-58 -l.91E-01 l.68E+OO l.50E+Ol pCi/L u 9/13/2017 22 :04 Cobalt-60 6.37E-01 l.72E+OO l.50E+Ol pCi/L u 9/13/2017 22:04 Zinc-65 l.88E+OO 3.62E+OO 3.00E+Ol pCi/L u 9/13/2017 22:04 Zircon ium-95 6 .03E-01 3 .39E+OO l.50E+Ol pCi/L u 9/13/2017 22 :04 Niobium-95 2.92E-01 l.94E+OO l.50E+Ol pCi/L u 9/13/2017 22 :04 lodine-131 -5.60E+OO 8.90E+OO N/A pCi/L u 9/13/2017 22:04 Cesium -134 -l.73E-01 l.63E+OO l.50E+Ol pCi/L u 9/13/2017 22 :04 Cesium-137 -7 .0lE-01 1.40E+OO l.80E+Ol pCi/L u 9/13/2017 22:04 Barium-140 -8.25E+OO l.58E+Ol l.50E+Ol pCi/L DLU 9/13/2017 22 :04 Lanthanum-140 -l.81E+OO 5.66E+OO l.50E+Ol pCi/L u 10/17/2017 12:22 Beryllium-7 l.llE+Ol l.53E+Ol N/A pCi/L u 10/17/2017 12:22 Potassium-40 4 .03E+Ol l.39E+Ol N/A pCi/L 10/17/201712:22 Manganese-54 8.28E-01 l.46E+OO l.50E+Ol pCi/L u 10/17/2017 12:22 lron -59 2.61E+OO 3.94E+OO 3 .00E+Ol pCi/L u 10/17/201712:22 Cobalt-58 -9 .76E-01 1.49E+OO l.50E+Ol pCi/L u 41

10/17/201712:22 Cobalt-60 6.23 E-01 l.SlE+OO l.SOE+Ol pCi/L u 10/17/2017 12:22 Zinc-65 -l.27E+OO 2.95E+OO 3.00E+Ol pCi/L u 10/17/201712:22 Zirconium-95 l.99E-01 2.68E+OO l.SOE+Ol pCi/L u 10/17/201712:22 Niobium-95 -5.12E-01 l.53E+OO l.SOE+Ol pCi/L u 10/17/2017 12:22 lodine-13 1 7.34E-01 7.0lE+OO N/A pCi/L u 10/17/2017 12:22 Cesium-134 6.43E-01 l.SSE+OO l.SOE+Ol pCi/L u 10/17/2017 12:22 Cesium-137 3.67E-01 l.44E+OO l.80E+Ol pCi/L u 10/17/2017 12:22 Barium-140 4.70E+OO l.41E+Ol l.SOE+Ol pCi/L u 10/17/201712:22 Lanthanum-140 -3.0lE+OO 4.41E+OO l.SOE+Ol pCi/L u 11/14/2017 21:23 Beryllium-7 -5.04E+OO l.16E+Ol N/A pCi/L u 11/14/2017 21:23 Potassium-40 l.61E+Ol l.llE+Ol N/A pCi/L UI 11/14/2017 21:23 Manganese-54 -l.52E-01 l.17E+OO l.SOE+Ol pCi/L u 11/14/2017 21:23 lron-59 l.16E+OO 3.17E+OO 3.00E+Ol pCi/L u 11/14/2017 21:23 Cobalt-58 2.0lE-01 l.31E+OO l.SOE+Ol pCi/L u 11/14/2017 21:23 Cobalt-60 2.llE-02 l.12E+OO l.SOE+Ol pCi/L u 11/14/2017 21:23 Zinc-65 8 .75 E-01 2.65E+OO 3.00E+Ol pCi/L u 11/14/2017 21:23 Zirconium-95 -l.38E-01 2.24E+OO l.SOE+Ol pCi/L u 11/14/2017 21:23 Niobium-95 -2.18E-01 l.35E+OO l.SOE+Ol pCi/L u 11/14/2017 21:23 lodine-131 9.13E+OO 4.89E+OO N/A pCi/L UI 11/14/2017 21 :23 Cesium-134 l.23E+OO l.26E+OO l.SOE+Ol pCi/L u 11/14/2017 21:23 Cesium-13 7 -l.03E+OO l.77E+OO l.80E+Ol pCi/L u 11/14/2017 21:23 Barium-140 2.92E-01 l.03E+Ol l.SOE+Ol pCi/L u 11/14/2017 21:23 Lanthanum-140 -2.04E+OO 3.36E+OO l.SOE+Ol pCi/L u 12/13/2017 22:14 Beryllium-7 9.63E+OO l.62E+Ol N/A pCi/L u 12/13/2017 22:14 Potassium-40 6.27E+Ol l.53E+Ol N/A pCi/L 12/13/2017 22:14 Manganese-54 2.33E-01 l.53E+OO l.SOE+Ol pCi/L u 12/13/2017 22:14 lron-59 l.38E+OO 4.llE+OO 3.00E+Ol pCi/L u 12/13/2017 22 :14 Cobalt-58 -5.68E-02 l.60E+OO l.SOE+Ol pCi/L u 12/13/2017 22:14 Cobalt-60 -8.03E-02 l.SSE+OO l.SOE+Ol pCi/L u 12/13/2017 22:14 Zinc-65 5.03E-01 3.12E+OO 3.00E+Ol pCi/L u 12/13/2017 22:14 Zirconium -95 -l. 25E-01 3.lOE+OO l.SOE+Ol pCi/L u 12/13/2017 22:14 Niobium-95 7.SlE-01 l.96E+OO l.SOE+Ol pCi/L u 12/13/2017 22:14 lodine-13 1 8 .SOE-01 l.19E+Ol N/A pCi/L u 12/13/2017 22:14 Cesium-134 1.42E+OO l.67E+OO l.SOE+Ol pCi/L u 12/13/2017 22 :14 Cesium-137 5.83E-01 1.46E+OO l.80E+Ol pCi/L u 12/13/2017 22:14 Barium-140 5.0lE+OO l.87E+Ol l.SOE+Ol pCi/L DLU 12/13/2017 22:14 Lanthanum-140 2.13E+OO 6.73E+OO l.SOE+Ol pCi/L u 42

Sample Data for: "SW-3" U - Target isotope was analyzed for but not detected above the MDC and LLD DL-MDC > LLD UI - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qualifier 1/31/2017 12:23 Beryllium-7 2.91E+OO l.04E+Ol N/A pCi/L u 1/31/2017 12:23 Potassium-40 -l.20E+Ol l.97E+Ol N/A pCi/L u 1/31/2017 12:23 Manganese-54 -l.84E-01 l.08E+OO l.SOE+Ol pCi/L u 1/31/2017 12:23 lron-59 -6.87E-01 2.32E+OO 3.00E+Ol pCi/L u 1/31/2017 12:23 Cobalt-58 -4.88E-01 l.14E+OO l.SOE+Ol pCi/L u 1/31/201712:23 Cobalt-60 l.43E-01 l.18E+OO l.SOE+Ol pCi/L u 1/31/2017 12:23 Zinc-65 2.48E-01 2.35E+OO 3.00E+Ol pCi/L u 1/31/2017 12:23 Zirconium-95 4.87E-01 2.04E+OO l.SOE+Ol pCi/L u 1/31/2017 12:23 Niobium -95 -2.41E-02 l.25E+OO l.SOE+Ol pCi/L u 1/31/2017 12:23 lodine-131 l.44E-01 2.32E+OO N/A pCi/L u 1/31/2017 12:23 Cesium-134 2.77E-02 l.33E+OO l.SOE+Ol pCi/L u 1/31/2017 12:23 Cesium-137 2.19E-01 l.20E+OO l.80E+Ol pCi/L u 1/31/2017 12:23 Barium-140 l.88E+OO 6.39E+OO l.SOE+Ol pCi/L u 1/31/201712:23 Lanthanum-140 7.39E-01 2.llE+OO l.SOE+Ol pCi/L u 2/28/2017 12:30 Beryllium-7 6.81E-01 l.18E+Ol N/A pCi/L u 2/28/2017 12:30 Potassium-40 l.36E+Ol l.35E+Ol N/A pCi/L UI 2/28/2017 12:30 Manganese-54 -l.67E-01 l.27E+OO l.SOE+Ol pCi/L u 2/28/2017 12:30 lron-59 6.90E-01 2.62E+OO 3.00E+Ol pCi/L u 2/28/2017 12:30 Cobalt-58 6.46E-02 l.35E+OO l.SOE+Ol pCi/L u 2/28/2017 12:30 Cobalt-60 2.20E-01 l.36E+OO l.SOE+Ol pCi/L u 2/28/2017 12:30 Zinc-65 l.83E+OO 3.lOE+OO 3.00E+Ol pCi/L u 2/28/2017 12:30 Zirconium-95 -8.94E-01 2.27E+OO l.SOE+Ol pCi/L u 2/28/2017 12:30 Niobium-95 6.llE-02 l.42E+OO l.SOE+Ol pCi/L u 2/28/2017 12:30 lodine-131 -5 .04E-01 2.42E+OO N/A pCi/L u 2/28/2017 12:30 Cesium-134 4.45E-01 l.38E+OO l.SOE+Ol pCi/L u 2/28/2017 12:30 Cesium-137 -4.61E-01 l.36E+OO l.80E+Ol pCi/L u 2/28/2017 12:30 Barium-140 l.94E+OO 7.14E+OO l.SOE+Ol pCi/L u 2/28/2017 12:30 Lanthanum-140 -l.20E+OO 2.lOE+OO l.SOE+Ol pCi/L u 3/28/2017 13:35 Beryllium-7 -l.37E+OO l.SlE+Ol N/A pCi/L u 3/28/2017 13:35 Potassium-40 4 .87E+OO l.SSE+Ol N/A pCi/L u 3/28/2017 13:35 Manganese-54 5.SOE-01 l.91E+OO 1.SOE+Ol pCi/L u 3/28/2017 13:35 lron-59 3.57E+OO 3.59E+OO 3.00E+Ol pCi/L u 3/28/2017 13:35 Cobalt-58 l.34E-01 l.88E+OO l.SOE+Ol pCi/L u 3/28/2017 13:35 Cobalt-60 -4.39E-03 l.88E+OO l.SOE+Ol pCi/L u 3/28/2017 13:35 Zinc-65 -6.0lE-01 3.69E+OO 3.00E+Ol pCi/L u 3/28/2017 13:35 Zirconium-95 -5.63E-01 3.lSE+OO l.SOE+Ol pCi/L u 3/28/2017 13:35 Niobium-95 -4.36E+OO l.93E+OO l.SOE+Ol pCi/L u 3/28/2017 13:35 lodine-131 8.67E-01 3.31E+OO N/A pCi/L u 43

3/28/2017 13:35 Cesium-134 -2.06E-01 2.0lE+OO l.50E+Ol pCi/L u 3/28/2017 13:35 Cesium-137 4.0lE-01 2.05E+OO l.80E+Ol pCi/L u 3/28/2017 13 :35 Barium-140 -4.20E+OO 9.0lE+OO l.50E+Ol pCi/L u 3/28/2017 13:35 Lanthanum-140 -9.31E-01 2.98E+OO l.50E+Ol pCi/L u 4/25/2017 11:43 Beryllium-7 5.73E+OO l.50E+Ol N/A pCi/L u 4/25/2017 11:43 Potassium-40 -l.37E+Ol 2.45E+Ol N/A pCi/L u 4/25/2017 11:43 Mangan ese-54 -2.81E-01 l.56E+OO l.50E+Ol pCi/L u 4/25/2017 11:43 lron-59 -3.30E-01 3.27E+OO 3.00E+Ol pCi/L u 4/25/2017 11:43 Cobalt-58 l.19E-01 l.64E+OO l.50E+Ol pCi/L u 4/25/2017 11:43 Cobalt -60 l.88E-01 l.74E+OO l.50E+Ol pCi/L u 4/25/2017 11:43 Zinc-65 -l. 65E+OO 3.22E+OO 3.00E+Ol pCi/L u 4/25/2017 11:43 Zi rcon ium -95 8.20E-01 3.13E+OO l. 50E+Ol pCi/L u 4/25/2017 11:43 Niobium-95 5.93E-01 l. 73E+OO l.50E+Ol pCi/L u 4/25/2017 11:43 lod ine-131 l. 54E+OO 2.95E+OO N/A pCi/L u 4/25/2017 11:43 Cesiu m-134 4 .89E-01 l.85E+OO l.50E+Ol pCi/L u 4/25/2017 11:43 Cesium-137 -2. 71E-01 l. 75E+OO l.80E+Ol pCi/L u 4/ 25/2017 11:43 Bariu m-140 l.5 2E+OO 8.27E+OO l. 50E+Ol pCi/L u 4/25/2017 11:43 Lanthanum-140 -2.95E-01 2. 91E+OO l.50E+Ol pCi/L u 5/30/2017 13:33 Beryllium -7 l.34E+OO l.13E+Ol N/A pCi/L u 5/30/2017 13:33 Potassi um-40 -3. 06E+Ol l. 97E+Ol N/A pCi/L u 5/30/2017 13:33 Mangane se-54 -5.51E-01 l. 12E+OO l. 50E+Ol pCi/L u 5/30/2017 13:33 lron-59 6.96E-01 2.65E+OO 3.00E+Ol pCi/L u 5/30/2017 13 :33 Coba lt-58 9.84E-02 l.20E+OO l.50E+Ol pCi/L u 5/30/2017 13:33 Coba lt-60 -l.71E+OO l. 16E+OO l. 50E+Ol pCi/L u 5/30/2017 13:33 Zinc-65 6.61E-02 2.46E+OO 3.00E+Ol pCi/L u 5/30/2017 13:33 Zircon ium-95 -7.74E-01 2.03E+OO l.50E+Ol pCi/L u 5/30/2017 13:33 Niobium -95 2.81E-01 l.29E+OO l. 50E+Ol pCi/L u 5/30/2017 13:33 lod ine-131 -5.40E-01 2.20E+OO N/A pCi/L u 5/ 30/2017 13:33 Cesi um -134 l. 78E-02 l. 39E+OO l. 50E+Ol pCi/L u 5/30/2017 13 :33 Ces ium-137 4 .12E-01 l. 35E+OO l.80E+Ol pCi/L u 5/30/2017 13:33 Ba rium -140 l.91E+OO 6.47E+OO l.50E+Ol pCi/L u 5/30/2017 13:33 Lanth a num -140 -6.86E-01 l.94E+OO l.50E+Ol pCi/L u 6/27/2017 12:45 Be ry lli um -7 3.92E+OO l.05E+Ol N/A pCi/L u 6/27/2017 12:45 Potassium-40 l. 68E+OO l.23 E+Ol N/A pCi/L u 6/27/2017 12:45 Manga nese-54 l. 22E-01 l.15E+OO l. 50E+Ol pCi/L u 6/27/2017 12:45 lron -59 6.73E-01 2.43E+OO 3.00E+Ol pCi/L u 6/27/2017 12:45 Coba lt-58 -l.81E-01 l.04E+OO l.50E+Ol pCi/L u 6/27/2017 12:45 Coba lt-60 8.08E-01 l. 32E+OO l. 50E+Ol pCi/L u 6/27/2017 12:45 Zinc-65 -8.46E-01 2.34E+OO 3.00E+Ol pCi/L u 6/27/2017 12:45 Zircon ium-95 8.86E-02 2.lOE+OO l. 50E+Ol pCi/L u 6/27/2017 12:45 Niob ium-95 -l. 16E-01 l.18E+OO l.50E+Ol pCi/L u 6/27/2017 12:45 lodin e- 131 8.66E-02 l.64E+OO N/A pCi/L u 6/27/20171 2:45 Ces ium -134 7.77E-02 l.33E+OO l.50E+Ol pCi/L u 6/27/2017 12:45 Cesium-137 3.37E-01 l.20E+OO l.80E+Ol pCi/L u 6/27/2017 12:45 Barium-140 2.07E+OO 5.13E+OO l.50E+Ol pCi/L u 6/27/2017 12:45 Lanthanum-140 4 .50E-01 l.75E+OO l.50E+Ol pCi/L u 44 L

7/25/2017 23 :00 Beryllium-7 -2.81E-01 9.90E+OO N/A pCi/L u 7/25/2017 23:00 Potassium-40 l.62E+Ol l.18E+Ol N/A pCi/L UI 7/25/2017 23:00 Manganese-54 -l.51E-01 l.22E+OO l.50E+Ol pCi/L u 7/25/2017 23 :00 lron-59 -4.47E-01 2.37E+OO 3.00E+Ol pCi/L u 7/25/2017 23 :00 Cobalt-58 -4.lOE-01 l.17E+OO l.50E+Ol pCi/L u 7/25/2017 23 :00 Cobalt-60 l.48E-01 l.35E+OO l.50E+Ol pCi/L u 7/25/2017 23 :00 Zinc-65 7.00E-01 2.61E+OO 3 .00E+Ol pCi/L u 7/25/2017 23 :00 Zirconium-95 -5 .13E-01 2.07E+OO l.50E+Ol pCi/L u 7/25/2017 23 :00 Niobium-95 -l.13 E-01 l.31E+OO l.50E+Ol pCi/L u 7/25/2017 23 :00 lodine-131 l.23E-0 1 l.56E+OO N/A pCi/L u 7/25/2017 23:00 Cesium-134 5.73E-01 l.52E+OO l.50E+Ol pCi/L u 7/25/2017 23:00 Cesium-137 5 .24E-01 l.32E+OO l.80E+Ol pCi/L u 7/25/2017 23:00 Barium-140 3 .21E+OO 5.31E+OO l.50E+Ol pCi/L u 7/25/2017 23 :00 Lanthanum -140 3 .97E-01 l.77E+OO l.50E+Ol pCi/L u 8/29/2017 11:33 Beryllium-7 l.96E+OO 9.24E+OO N/A pCi/L u 8/29/2017 11:33 Potassium-40 7 .33E+OO l.93E+Ol N/A pCi/L u 8/29/2017 11:33 Manganese-54 4 .85E-01 l.07E+OO l.50E+Ol pCi/L u 8/29/2017 11:33 lron-59 -8. 62E-01 2 .06E+OO 3 .00E+Ol pCi/L u 8/29/2017 11:33 Cobalt-58 7.85E-03 l.04E+OO l.50E+Ol pCi/L u 8/29/2017 11:33 Cobalt-60 l.22E-02 l.21E+OO l.50E+Ol pCi/L u 8/29/2017 11:33 Zinc-65 5 .83E-02 2.37E+OO 3.00E+Ol pCi/L u 8/29/2017 11:33 Zirconium-95 4.64E-02 l.82E+OO l.50E+Ol pCi/L u 8/29/2017 11:33 Niobium-95 -l.23E+OO l.22E+OO l.50E+Ol pCi/L u 8/29/2017 11:33 lodine-131 l.20E-02 1.42E+OO N/A pCi/L u 8/29/2017 11:33 Cesium-134 l.72E-01 l.25E+OO l.50E+Ol pCi/L u 8/29/2017 11:33 Cesium -13 7 9 .91E-03 l.lOE+OO l.80E+Ol pCi/L u 8/29/2017 11:33 Barium-140 -2.90E+OO 4.36E+OO l.50E+Ol pCi/L u 8/29/2017 11:33 Lanthanum -140 6 .89E-01 l.57E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 Beryllium-7 -2.33E+OO l.20E+Ol N/A pCi/L u 9/28/2017 9:05 Potassium-40 7.47E-01 1.22E+Ol N/A pCi/L u 9/28/2017 9 :05 Manganese-54 -3.71E-01 l.17E+OO l.50E+Ol pCi/L u 9/28/2017 9 :05 lron-59 -6.40E-01 2.61E+OO 3 .00E+Ol pCi/L u 9/28/2017 9 :05 Cobalt-58 -5.65E-01 l.27E+OO l.50E+Ol pCi/L u 9/28/2017 9 :05 Cobalt-60 -3.14E-01 l.29E+OO l.50E+Ol pCi/L u 9/28/2017 9 :05 Zinc-65 7.18E-01 2.89E+OO 3 .00E+Ol pCi/L u 9/28/2017 9:05 Zirconium-95 8.58E-01 2.44E+OO l.50E+Ol pCi/L u 9/28/2017 9 :05 Niobium-95 8 .79E-01 1.47E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 lodine-131 6.38E-01 2.46E+OO N/A pCi/L u 9/28/2017 9:05 Cesium -134 l.04E+OO l.64E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 Cesium-137 7 .77E-02 l.36E+OO l.80E+Ol pCi/L u 9/28/2017 9:05 Barium-140 -2.87E+OO 6.62E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 Lanthanum-140 -l. 16E+OO 2.05E+OO l.50E+Ol pCi/L u 10/31/2017 16:00 Beryllium-7 l.38E-01 l.59E+Ol N/A pCi/L u 10/31/2017 16:00 Potassium-40 9 .79E+OO l.80E+Ol N/A pCi/L u 10/31/2017 16:00 Manganese-54 -2.19E-01 l.77E+OO l.50E+Ol pCi/L u 10/31/2017 16:00 lron-59 6.68E-01 3.73E+OO 3.00E+Ol pCi/L u 45

10/31/2017 16:00 Cobalt-58 -4.80E-01 l.80E+OO l.SOE+Ol pCi/L u 10/31/2017 16:00 Cobalt-60 l.13E-01 l.86E+OO l.SOE+Ol pCi/L u 10/31/2017 16:00 Zinc-65 l.39E-01 3.61E+OO 3.00E+Ol pCi/L u 10/31/2017 16:00 Zirconium-95 -7.35E-01 3.lSE+OO l.SOE+Ol pCi/L u 10/31/2017 16:00 Niobium-95 8.19E-02 l.85E+OO l.SOE+Ol pCi/L u 10/31/2017 16:00 lodine-131 l.74E+OO 3.16E+OO N/A pCi/L u 10/31/2017 16:00 Cesium-134 l.08E-01 2.00E+OO l.SOE+Ol pCi/L u 10/31/2017 16:00 Cesium-137 3.47E-0 1 l.92E+OO l.80E+Ol pCi/L u 10/31/2017 16:00 Barium-140 -l.84E+OO 8.77E+OO l.SOE+Ol pCi/L u 10/31/2017 16:00 Lanthanum -140 -8.22E-01 2.37E+OO l.SOE+Ol pCi/L u 11/28/2017 11:00 Beryllium-7 3.14E+OO l.02E+Ol N/A pCi/L u 11/28/2017 11:00 Potassium-40 4.80E+OO l.17E+Ol N/A pCi/L u 11/28/2017 11:00 Manganese-54 4 .03E-0 1 l.13E+OO l.SOE+Ol pCi/L u 11/28/2017 11:00 lron-59 4 .25E-01 2.SSE+OO 3.00E+Ol pCi/L u 11/28/2017 11:00 Cobalt-58 -7.66E-02 l.08E+OO l.SOE+Ol pCi/L u 11/28/2017 11:00 Cobalt-60 -3.0SE-01 l.27E+OO l.SOE+Ol pCi/L u 11/28/2017 11:00 Zinc-65 6.lSE-02 2.47E+OO 3.00E+Ol pCi/L u 11/28/2017 11:00 Zirconium-95 9.09E-02 2.0lE+OO l.SOE+Ol pCi/L u 11/28/2017 11:00 Niobium-95 -9.73E-02 l.19E+OO l.SOE+Ol pCi/L u 11/28/2017 11:00 lodine-131 -2.16E+OO l.56E+OO N/A pCi/L u 11/28/2017 11:00 Cesium-134 5.lSE-01 l.36E+OO l.SOE+Ol pCi/L u 11/28/2017 11:00 Cesium-137 -2.82E-01 l.24E+OO l.80E+Ol pCi/L u 11/28/2017 11:00 Barium-140 -8.35E-01 5.lOE+OO l.SOE+Ol pCi/L u 11/28/2017 11:00 Lanthanum-140 -6.76E-01 l.59E+OO l.SOE+Ol pCi/L u 12/26/2017 12:28 Beryllium-7 6.12E+OO l.48E+Ol N/A pCi/L u 12/26/2017 12:28 Potassium-40 -l.73E+Ol 2.90E+Ol N/A pCi/L u 12/26/2017 12:28 Manganese-54 -4.44E-01 l.63E+OO l.SOE+Ol pCi/L u 12/26/2017 12:28 lron-59 -8.89E-01 3.85E+OO 3.00E+Ol pCi/L u 12/26/2017 12:28 Cobalt-58 6.97E-01 l.86E+OO l.SOE+Ol pCi/L u 12/26/2017 12:28 Cobalt-60 -l.74E-01 l.68E+OO l.SOE+Ol pCi/L u 12/26/2017 12:28 Zinc-65 1.45E-01 3.52E+OO 3.00E+Ol pCi/L u 12/26/2017 12:28 Zirconium-95 l.12E-01 3.25E+OO l.SOE+Ol pCi/L u 12/26/2017 12:28 Niobium -95 l.OSE+OO l.86E+OO l.SOE+Ol pCi/L u 12/26/2017 12:28 lodine-131 6.65E-01 4 .77E+OO N/A pCi/L u 12/26/2017 12:28 Cesium-134 6.SOE-01 l.78E+OO l.SOE+Ol pCi/L u 12/26/2017 12:28 Cesium-137 -6.38E-01 l.67E+OO l.80E+Ol pCi/L u 12/26/2017 12:28 Barium-140 -l.68E+OO l.12E+Ol l.SOE+Ol pCi/L u 12/26/2017 12:28 Lanthanum-140 -4.78E-01 4.14E+OO l.SOE+Ol pCi/L u 46

Sample Data for: "SW-4" U - Target isotope was analyzed for but not detected above the MDC and LLD DL- MDC > LLD UI - Uncertain identification for gamma spectroscopy Collect Date Parameter Resu lt MDC LLD Units Qualifier 1/31/2017 11:28 Beryllium-7 -3.53E+OO l.02E+Ol N/A pCi/L u 1/31/2017 11:28 Potassi u m-40 l.SSE+Ol l.lSE+Ol N/A pCi/L UI 1/31/201711:28 Manganese-54 4.86E-01 l.20E+OO l.SOE+Ol pCi/L u 1/31/201711:28 lron-59 2.91E-01 2.47E+OO 3.00E+Ol pCi/L u 1/31/201711:28 Cobalt-58 -8.46E-02 l.26E+OO l.SOE+Ol pCi/L u 1/31/201711:28 Cobalt-60 l.47E-01 l.17E+OO l.SOE+Ol pCi/L u 1/31/201711:28 Zinc-65 -5.72E-01 2.14E+OO 3.00E+Ol pCi/L u 1/31/2017 11:28 Zircon ium-95 6.0lE-01 2.lOE+OO l.SOE+Ol pCi/L u 1/31/2017 11:28 Niobium-95 3 .66E-01 l.13E+OO l.SOE+Ol pCi/L u 1/31/2017 11:28 lodine-131 -7 .92E-01 2.25E+OO N/A pCi/L u 1/31/2017 11:28 Cesium-134 3.18E-01 l.27E+OO l.SOE+Ol pCi/L u 1/31/2017 11:28 Cesium-137 -3.44E-01 l.llE+OO l.80E+Ol pCi/L u 1/31/2017 11:28 Barium-140 -5.29E+OO 6 .02E+OO l.SOE+Ol pCi/L u 1/31/2017 11:28 Lanthanum-140 2.91E-01 l.92E+OO l.SOE+Ol pCi/L u 2/28/2017 10:10 Beryllium-7 -2 .13E+OO l.27E+Ol N/A pCi/L u 2/28/2017 10:10 Potassium-40 l.25E+Ol 1.22E+Ol N/A pCi/L UI 2/28/2017 10:10 Manganese-54 5.42E-01 l.52E+OO l.SOE+Ol pCi/L u 2/28/201710:10 lron-59 -6.llE-01 2.90E+OO 3.00E+Ol pCi/L u 2/28/2017 10:10 Cobalt-58 -6.06E-01 l.36E+OO l.SOE+Ol pCi/L u 2/28/2017 10:10 Cobalt-60 4.81E-02 l.78E+OO l.SOE+Ol pCi/L u 2/28/2017 10:10 Zinc-65 l.31E-01 3 .02E+OO 3.00E+Ol pCi/L u 2/28/2017 10:10 Zirconium-95 8 .78E-01 2.81E+OO l.SOE+Ol pCi/L u 2/28/2017 10:10 Niobium -95 l .32E-Ol l.67E+OO l.SOE+Ol pCi/L u 2/28/2017 10:10 lodine-131 3.04E-Ol 2 .61E+OO N/A pCi/L u 2/28/2017 10:10 Cesi u m-134 4 .97E-01 l.59E+OO l.SOE+Ol pCi/L u 2/28/201710:10 Cesium-137 9.07E-02 l.49E+OO l.80E+Ol pCi/L u 2/28/2017 10:10 Barium-140 l.92E+OO 7.48E+OO l.SOE+Ol pCi/L u 2/28/2017 10:10 Lanthanum-140 4 .73E-01 2.43E+OO l.SOE+Ol pCi/L u 3/28/2017 11:34 Beryllium-7 6.13E-01 l.25E+Ol N/A pCi/L u 3/28/2017 11:34 Potassium-40 l.94E+Ol l.49E+Ol N/A pCi/L UI 3/28/2017 11:34 Manganese-54 4 .87E-02 1.56E+OO l.SOE+Ol pCi/L u 3/28/2017 11:34 lron-59 -l.59E+OO 3 .04E+OO 3.00E+Ol pCi/L u 3/28/2017 11:34 Cobalt-58 8.21E-02 l.53E+OO l.SOE+Ol pCi/L u 3/28/2017 11:34 Cobalt-60 -3.0lE-01 l.71E+OO l.SOE+Ol pCi/L u 3/28/2017 11:34 Zinc-65 -l.87E-01 3.34E+OO 3.00E+Ol pCi/L u 3/28/2017 11:34 Zirconium-95 l.83E+OO 3 .08E+OO l.SOE+Ol pCi/L u 3/28/2017 11:34 Niobium-95 l.98E-01 l.65E+OO l.SOE+Ol pCi/L u 3/28/2017 11:34 lodine-131 -3 .12E-01 2.lSE+OO N/A pCi/L u 47

3/28/2017 11:34 Cesium-134 7.82E-01 l.76E+OO l.50E+Ol pCi/L u 3/28/2017 11:34 Cesium-137 5.26E-01 l.64E+OO l.80E+Ol pCi/L u 3/28/2017 11:34 Barium-140 -l.59E+OO 6.25E+OO l.50E+Ol pCi/L u 3/28/2017 11:34 Lanthanum-140 -9.96E-01 2.27E+OO l.50E+Ol pCi/L u 4/25/2017 13:20 Beryllium-7 -7.26E+OO l.14E+Ol N/A pCi/L u 4/25/2017 13:20 Potassium-40 7.65E+OO l.18E+Ol N/A pCi/L u 4/25/2017 13:20 Manganese-54 2.60E-01 l.35E+OO l.50E+Ol pCi/L u 4/25/2017 13:20 lron-59 -9.SOE-01 2.58E+OO 3.00E+Ol pCi/L u 4/25/2017 13:20 Cobalt-58 4.29E-01 l.41E+OO l.50E+Ol pCi/L u 4/25/2017 13:20 Cobalt-60 3.25E-01 1.41E+OO l.50E+Ol pCi/L u 4/25/2017 13:20 Zinc-65 l.15E+OO 2.85E+OO 3.00E+Ol pCi/L u 4/25/2017 13:20 Zirconium-95 8.81E-01 2.41E+OO l.50E+Ol pCi/L u 4/25/2017 13:20 Niobium-95 l.82E-01 l.45E+OO l.50E+Ol pCi/L u 4/25/2017 13:20 lodine-131 3.97E-02 2.42E+OO N/A pCi/L u 4/25/2017 13:20 Cesium-134 9.33E-01 l.64E+OO l.50E+Ol pCi/L u 4/25/2017 13:20 Cesium-137 l.25E+OO l.43E+OO l.80E+Ol pCi/L u 4/25/2017 13:20 Ba rium-140 l.31E+OO 7.02E+OO l.50E+Ol pCi/L u 4/25/2017 13:20 Lanthanum-140 4.74E-01 2.32E+OO l.50E+Ol pCi/L u 5/30/2017 11:34 Beryllium-7 -4.83E+OO l.73E+Ol N/A pCi/L u 5/30/2017 11:34 Potassium-40 3.16E+Ol 2.12E+Ol N/A pCi/L UI 5/30/2017 11:34 Manganese-54 -5 .69E-01 2.0lE+OO l.50E+Ol pCi/L u 5/30/2017 11:34 lron-59 5.77E-01 4.35E+OO 3.00E+Ol pCi/L u 5/30/2017 11:34 Cobalt-58 5.03E-01 2.31E+OO l.50E+Ol pCi/L u 5/30/2017 11:34 Cobalt-60 -6.97E-01 2.14E+OO l.50E+Ol pCi/L u 5/30/2017 11:34 Zinc-65 -l.92E+OO 3.82E+OO 3.00E+Ol pCi/L u 5/30/2017 11:34 Zirconium-95 -l.66E+OO 3.64E+OO l.50E+Ol pCi/L u 5/30/2017 11:34 Niobium-95 l.30E+OO 2.32E+OO l.50E+Ol pCi/L u 5/30/2017 11:34 lodine-131 -6.76E-01 3.45E+OO N/A pCi/L u 5/30/2017 11:34 Cesium-134 -3. 21E-03 2.34E+OO l.50E+Ol pCi/L u 5/30/2017 11:34 Cesium-137 -4.46E-01 2.28E+OO l.80E+Ol pCi/L u 5/30/2017 11:34 Barium-140 4.86E+OO l.lOE+Ol l.50E+Ol pCi/L u 5/30/2017 11:34 Lanthanum-140 l.04E+OO 3.SOE+OO l.50E+Ol pCi/L u 6/27/2017 10:20 Beryllium-7 -2.16E+OO 8.17E+OO N/A pCi/L u 6/27/2017 10:20 Potassium-40 -7.64E-01 l.79E+Ol N/A pCi/L u 6/27/2017 10:20 Manganese-54 2.88E-01 l.03E+OO l.50E+Ol pCi/L u 6/27/2017 10:20 lron-59 4.65E-01 l.99E+OO 3.00E+Ol pCi/L u 6/27/2017 10:20 Cobalt-58 2.52E-01 l.OOE+OO l.50E+Ol pCi/L u 6/27/201710:20 Cobalt-60 3.87E-01 l.14E+OO l.50E+Ol pCi/L u 6/27/2017 10:20 Zinc-65 l.lOE+OO 2.34E+OO 3.00E+Ol pCi/L u 6/27/2017 10:20 Zirconium-95 6.41E-01 l.77E+OO l.50E+Ol pCi/L u 6/27/2017 10:20 Niobium-95 3.13E-01 l.03E+OO l.50E+Ol pCi/L u 6/27/2017 10:20 lodine-131 9.57E-02 l.33E+OO N/A pCi/L u 6/27/201710 :20 Cesium-134 4.67E-02 l.12E+OO l.50E+Ol pCi/L u 6/27/2017 10:20 Cesium-137 3.71E-01 l.12E+OO l.80E+Ol pCi/L u 6/27/201710:20 Barium-140 -2 .0lE+OO 3.84E+OO l.50E+Ol pCi/L u 6/27/201710:20 Lanthanum-140 2.91E-01 l.58E+OO 1.SOE+Ol pCi/L u 48

7/25/2017 10:00 Beryllium-7 -4.12E+OO l.32E+Ol N/A pCi/L u 7/25/2017 10:00 Potassium-40 2.30E+Ol l.53E+Ol N/A pCi/L UI 7/25/2017 10:00 Manganese-54 3.lOE-01 l.44E+OO l.50E+Ol pCi/L u 7/25/2017 10:00 lron-59 l.OlE+OO 2.81E+OO 3.00E+Ol pCi/L u 7/25/2017 10:00 Cobalt-58 -6.61E-01 l.29E+OO l.50E+Ol pCi/L u 7/25/2017 10:00 Cobalt-60 -5.84E-01 l.47E+OO l.50E+Ol pCi/L u 7/25/2017 10:00 Zinc-65 3.66E-01 2.87E+OO 3.00E+Ol pCi/L u 7/25/2017 10:00 Zirconium-95 -6.06E-02 2.49E+OO l.50E+Ol pCi/L u 7/25/2017 10:00 Niobium-95 l.16E+OO l.66E+OO l.50E+Ol pCi/L u 7/25/2017 10:00 lodine-131 6.82E-02 2.llE+OO N/A pCi/L u 7/25/201710:00 Cesium-134 7.55E-01 l.67E+OO l.50E+Ol pCi/L u 7/25/2017 10:00 Cesium-137 -2.93E-01 l.52E+OO l.80E+Ol pCi/L u 7/25/2017 10:00 Barium-140 2.23E+OO 6.70E+OO l.50E+Ol pCi/L u 7/25/2017 10:00 Lanthanum-140 -1.43E+OO l.92E+OO l.50E+Ol pCi/L u 8/29/2017 10:15 Beryllium-7 l.14E+OO l.16E+Ol N/A pCi/L u 8/29/2017 10:15 Potassium-40 5.64E-01 l.33E+Ol N/A pCi/L u 8/29/2017 10:15 Manganese-54 2.40E-01 l.42E+OO l.50E+Ol pCi/L u 8/29/2017 10:15 lron-59 -9.30E-02 2.71E+OO 3.00E+Ol pCi/L u 8/29/201710 :15 Cobalt-58 -9 .70E-01 l.35E+OO l.50E+Ol pCi/L u 8/29/2017 10:15 Cobalt-60 3.42E-02 l.42E+OO l.50E+Ol pCi/L u 8/29/2017 10:15 Zinc-65 -4.04E+OO 2.57E+OO 3.00E+Ol pCi/L u 8/29/2017 10:15 Zirconium-95 -9.52E-01 2.49E+OO l.50E+Ol pCi/L u 8/29/2017 10:15 Niobium-95 7.77E-01 l.35E+OO l.50E+Ol pCi/L u 8/29/2017 10:15 lodine-131 2.30E-01 l.84E+OO N/A pCi/L u 8/29/2017 10:15 Cesium-134 3.97E-01 l.56E+OO l.50E+Ol pCi/L u 8/29/2017 10:15 Cesium-137 3.29E-01 l.50E+OO l.80E+Ol pCi/L u 8/29/2017 10:15 Barium-140 l.15E-01 6.12E+OO l.50E+Ol pCi/L u 8/29/2017 10:15 Lanthanum-140 -3 .98E-01 2.09E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 Beryllium-7 -6.36E+OO l.07E+Ol N/A pCi/L u 9/28/2017 9:05 Potassium-40 l.28E+Ol l.24E+Ol N/A pCi/L UI 9/28/2017 9:05 Manganese-54 -4.69E-01 l.15E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 lron-59 -9.21E-01 2.35E+OO 3.00E+Ol pCi/L u 9/28/2017 9:05 Cobalt-58 4.52E-01 l.38E+OO 1.SOE+Ol pCi/L u 9/28/2017 9:05 Cobalt-60 l.14E+OO l.53E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 Zinc-65 -4.56E-01 2.66E+OO 3.00E+Ol pCi/L u 9/28/2017 9:05 Zirconium-95 -6.12E-01 2.23E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 Niobium-95 -4.50E-01 l.25E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 lodine-131 3.31E-Ol 2.29E+OO N/A pCi/L u 9/28/2017 9:05 Cesium-134 6.45E-01 1.44E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 Cesium-137 6.83E-01 l.48E+OO l.80E+Ol pCi/L u 9/28/2017 9:05 Barium-140 4.43E-01 6.38E+OO l.50E+Ol pCi/L u 9/28/2017 9:05 Lanthanum-140 -5 .06E-01 l.87E+OO l.50E+Ol pCi/L u 10/31/2017 16:50 Beryllium-7 -l.26E+OO l.29E+Ol N/A pCi/L u 10/31/2017 16:50 Potassium-40 2.49E+Ol l.44E+Ol N/A pCi/L UI 10/31/2017 16:50 Manganese-54 8.90E-01 l.61E+OO l.50E+Ol pCi/L u 10/31/2017 16:50 lron-59 -l.44E-01 3.20E+OO 3.00E+Ol pCi/L u 49

10/31/2017 16:50 Cobalt-58 -2.45E-01 l.SSE+OO l.SOE+Ol pCi/L u 10/31/2017 16:50 Cobalt-60 -5.40E-03 l.77E+OO l.SOE+Ol pCi/L u 10/31/2017 16:50 Zinc-65 -3.86E-01 3.lSE+OO 3.00E+Ol pCi/L u 10/31/2017 16:50 Zirconium-95 5.12E-01 2.58E+OO l.SOE+Ol pCi/L u 10/31/2017 16:50 Niobium-95 -3.12E-01 l.60E+OO l.SOE+Ol pCi/L u 10/31/2017 16:50 lodine-131 -l. 22E+OO 2.53E+OO N/A pCi/L u 10/31/2017 16:50 Cesium-134 l.17E-01 l.72E+OO l.SOE+Ol pCi/L u 10/31/2017 16:50 Ces iu m-137 7.14E-01 l.72E+OO l.80E+Ol pCi/L u 10/31/2017 16:50 Barium-140 -8.SlE-01 7.35E+OO l.SOE+Ol pCi/L u 10/31/2017 16:50 Lanthanum -140 2.33E+OO 2.74E+OO l.SOE+Ol pCi/L u 11/28/2017 9:11 Beryllium-7 -6.59E+OO l.06E+Ol N/A pCi/L u 11/28/2017 9:11 Potassium-40 l.78E+Ol l.23E+Ol N/A pCi/L UI 11/28/2017 9:11 Ma nga nese-54 -l.97E+OO l.23E+OO l.SOE+Ol pCi/L u 11/28/2017 9:11 lron-59 2.32E-01 2.61E+OO 3.00E+Ol pCi/L u 11/28/2017 9:11 Cobalt-58 -7 .41E-02 l.25E+OO l.SOE+Ol pCi/L u 11/28/2017 9:11 Cobalt-60 -3.03E-01 l.39E+OO l.SOE+Ol pCi/L u 11/28/2017 9:11 Zinc-65 3.13E-01 3.0lE+OO 3.00E+Ol pCi/L u 11/28/2017 9:11 Zirconium l.66E-01 2.34E+OO l.SOE+Ol pCi/L u 11/28/2017 9:11 Niobium -95 1.14E+OO l.58E+OO l.SOE+Ol pCi/L u 11/28/2017 9:11 lodine-131 -l.17E-02 l.81E+OO N/A pCi/L u 11/28/2017 9:11 Cesium-134 4.52E-01 l.58E+OO 1.SOE+Ol pCi/L u 11/28/2017 9:11 Cesium-137 -2.87E-01 l.36E+OO l.80E+Ol pCi/L u 11/28/2017 9:11 Barium-140 l.72E+OO 5.82E+OO l.SOE+Ol pCi/L u 11/28/2017 9:11 Lanthanum-140 -5.63E-01 l.81E+OO l.SOE+Ol pCi/L u 12/26/2017 11:18 Beryllium-7 5.97E+OO l.65E+Ol N/A pCi/L u 12/26/2017 11 :18 Potassium-40 -4.85E+OO 2.53E+Ol N/A pCi/L u 12/26/2017 11:18 Manganese-54 2.69E-02 l.46E+OO l.SOE+Ol pCi/L u 12/26/2017 11:18 lron-59 l.lSE+OO 3.62E+OO 3.00E+Ol pCi/L u 12/26/2017 11:18 Cobalt-58 -l.33E+OO l.47E+OO l.SOE+Ol pCi/L u 12/26/2017 11:18 Cobalt-60 7.SlE-01 l.87E+OO l.SOE+Ol pCi/L u 12/26/2017 11:18 Zinc-65 -l.40E+OO 3.17E+OO 3.00E+Ol pCi/L u 12/26/2017 11:18 Zirconium-95 3.71E-01 3.25E+OO l.SOE+Ol pCi/L u 12/26/2017 11:18 Niobium-95 -9. lSE-01 l.85E+OO l.SOE+Ol pCi/L u 12/26/2017 11:18 lodine-131 l.62E+OO 5.07E+OO N/A pCi/L u 12/26/2017 11:18 Cesium-134 l.lSE+OO l.89E+OO l.SOE+Ol pCi/L u 12/26/2017 11:18 Cesium-137 2.03E-01 l.69E+OO l.80E+Ol pCi/L u 12/26/2017 11:18 Barium-140 -2.88E+OO l.12E+Ol l.SOE+Ol pCi/L u 12/26/2017 11:18 Lanthanum-140 -l. 04E+OO 3.66E+OO l.SOE+Ol pCi/L u

50

Sample Data for: "SW-5" U - Target isotope was analyzed for but not detected above the MDC and LLD DL-MDC > LLD UI - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qualifier 1/17/2017 9:58 Beryllium-7 -2 .57E+OO l.63E+Ol N/A pCi/L u 1/17/2017 9 :58 Potassium-40 4 .70E+Ol l.39E+Ol N/A pCi/L 1/17/2017 9:58 Manganese-54 l.86E-01 l.56E+OO l.SOE+Ol pCi/L u 1/17/2017 9:58 lron-59 2.38E+OO 4.04E+OO 3.00E+Ol pCi/L u 1/17/2017 9:58 Cobalt-58 8.69E-01 l.82E+OO l.SOE+Ol pCi/L u 1/17/2017 9:58 Cobalt-60 3.SSE-01 l.56E+OO 1.SOE+Ol pCi/L u 1/17/2017 9:58 Zinc-65 l.34E+OO 3.llE+OO 3.00E+Ol pCi/L u 1/17/2017 9:58 Zirconium -95 -l.3 9E+OO 3.24E+OO l.SOE+Ol pCi/L u 1/17/2017 9:58 Niobium-95 -l.53 E+OO l.89E+OO l.SOE+Ol pCi/L u 1/17/2017 9 :58 lodine-131 5.67E-01 l.OlE+Ol N/A pCi/L u 1/17/2017 9:58 Cesium-134 -4. 66E-01 l.70E+OO l.SOE+Ol pCi/L u 1/17/2017 9 :58 Cesium-137 5.90E-01 l.74E+OO l.80E+Ol pCi/L u 1/17/2017 9 :58 Barium-140 -2. 19E+OO l.79E+Ol l.SOE+Ol pCi/L DLU 1/17/2017 9 :58 Lanthanum-140 -2. 21E+OO 5.48E+OO 1.SOE+Ol pCi/L u 2/14/2017 21:09 Beryllium-7 3.64E+OO l.SSE+Ol N/A pCi/L u 2/14/2017 21:09 Potassium-40 l.29E+Ol l.49E+Ol N/A pCi/L u 2/14/2017 21 :09 Ma nga nese-54 -7.80E-01 l.43E+OO l.SOE+Ol pCi/L u 2/14/2017 21:09 lron -59 4.06E-01 3.73E+OO 3.00E+Ol pCi/L u 2/14/2017 21:09 Cobalt-58 -5 .68E-01 l.SSE+OO l.SOE+Ol pCi/L u 2/14/2017 21:09 Cobalt-60 -l.34 E-01 1.49E+OO l.SOE+Ol pCi/L u 2/14/2017 21:09 Zinc-65 -l.20E-01 3.35E+OO 3 .00E+Ol pCi/L u 2/14/2017 21:09 Zircon ium-95 9.16E-01 3.13 E+OO l.SOE+Ol pCi/L u 2/14/2017 21:09 Niobium -95 -5.88E-01 l.64E+OO l.SOE+Ol pCi/L u 2/14/2017 21:09 lodine-131 -2.34E+OO 8.33E+OO N/A pCi/L u 2/14/2017 21:09 Cesium-13 4 7.99E-01 l.69E+OO l.SOE+Ol pCi/L u 2/14/2017 21:09 Cesium-13 7 -l.39E-01 l.60E+OO 1.80E+Ol pCi/L u 2/14/2017 21:09 Barium-140 -3. 76E+OO l.58E+Ol l.SOE+Ol pCi/L DLU 2/14/2017 21:09 Lanthanum-140 2.88E-01 5.84E+OO l.SOE+Ol pCi/L u 3/14/2017 21:48 Beryllium-7 4 .25E+OO l.85E+Ol N/A pCi/L u 3/14/2017 21:48 Potass iu m-40 l.56E+Ol l.83E+Ol N/A pCi/L u 3/14/2017 21:48 Manganese-54 -4. 93E-01 l.84E+OO l.SOE+Ol pCi/L u 3/14/2017 21:48 lron -59 -l. 63E+OO 4.56E+OO 3 .00E+Ol pCi/L u 3/14/2017 21:48 Cobalt-58 2.73E-01 2.0SE+OO l.SOE+Ol pCi/L u 3/14/2017 21 :48 Cobalt-60 9.22E-02 2.16E+OO l.SOE+Ol pCi/L u 3/14/2017 21:48 Zinc-65 -l.13 E+OO 3.73E+OO 3 .00E+Ol pCi/L u 3/14/2017 21:48 Zirconium-95 5.69E-01 3.92E+OO l.SOE+Ol pCi/L u 3/14/2017 21:48 Niobium-95 -4.25E-01 2.18E+OO l.SOE+Ol pCi/L u 3/14/2017 21:48 lodine-131 3.29E+OO l.07E+Ol N/A pCi/L u 51

3/14/2017 21 :48 Cesium-134 -3.78E-01 l.96E+OO l.50E+Ol pCi/L u 3/14/2017 21:48 Cesium-137 -2.89E+OO l.69E+OO l.80E+Ol pCi/L u 3/14/2017 21:48 Barium-140 l.31E+OO l.98E+Ol l.50E+Ol pCi/L DLU 3/14/2017 21:48 Lanthanum-140 7.99E-01 8.0lE+OO l.50E+Ol pCi/L u 4/13/2017 9:42 Beryllium-7 -9.12E-01 l.77E+Ol N/A pCi/L u 4/13/2017 9:42 Potassium-40 3.22E+Ol l.70E+Ol N/A pCi/L 4/13/203..7 9:42 Manganese-54 l.17E-01 l.92E+OO l.50E+Ol pCi/L u 4/13/2017 9:42 lron-59 -l.45E+OO 4.27E+OO 3.00E+Ol pCi/L u 4/13/2017 9:42 Cobalt-58 -l.67E-02 2.20E+OO l.50E+Ol pCi/L u 4/13/2017 9:42 Cobalt-60 4 .88E-01 2.04E+OO l.50E+Ol pCi/L u 4/13/2017 9:42 Zinc-65 -l.58E+OO 3.63E+OO 3.00E+Ol pCi/L u 4/13/2017 9:42 Zirconium-95 2.77E+OO 3.97E+OO l.50E+Ol pCi/L u 4/13/2017 9:42 Niobium-95 -l.32 E-01 2.17E+OO l.50E+Ol pCi/L u 4/13/2017 9:42 lodine-131 -3 .68E+OO 8.37E+OO N/A pCi/L u 4/13/2017 9:42 Cesium-134 7.54E-01 2.20E+OO l.50E+Ol pCi/L u 4/13/2017 9:42 Cesium-137 l.39E+OO l.93E+OO l.80E+Ol pCi/L u 4/13/2017 9:42 Barium-140 -l.34E+Ol l.70E+Ol l.50E+Ol pCi/L DLU 4/13/2017 9:42 Lanthanum-140 -l.69E+OO 5.18E+OO l.50E+Ol pCi/L u 5/15/2017 21:54 Beryll ium-7 4.13E-01 1.54E+Ol N/A pCi/L u 5/15/2017 21:54 Potassium-40 -l.23E+Ol l.61E+Ol N/A pCi/L u 5/15/2017 21:54 Manganese-54 l.56E-01 1.47E+OO l.50E+Ol pCi/L u 5/15/2017 21:54 lron -59 l.52E+OO 3.56E+OO 3.00E+Ol pCi/L u 5/15/2017 21:54 Cobalt-58 -8.53E-01 l.54E+OO 1.SOE+Ol pCi/L u 5/15/2017 21:54 Cobalt-60 -l.OlE-01 l.51E+OO l.50E+Ol pCi/L u 5/15/2017 21:54 Zinc-65 l.43E-01 3.05E+OO 3.00E+Ol pCi/L u 5/15/2017 21:54 Zirconium-95 -1 .44E+OO 2.81E+OO l.50E+Ol pCi/L u 5/15/2017 21:54 Niobium-95 -9.52E-01 l.67E+OO l.50E+Ol pCi/L u 5/15/2017 21:54 lodine-131 -l.70E+OO 8.72E+OO N/A pCi/L u 5/15/2017 21:54 Cesium-134 3.20E-01 l.57E+OO l.50E+Ol pCi/L u 5/15/2017 21:54 Cesium-137 2.56E-01 1.48E+OO l.80E+Ol pCi/L u 5/15/2017 21:54 Barium-140 l.15E+OO l.57E+Ol l.50E+Ol pCi/L DLU 5/15/2017 21:54 Lanthanum-140 -2.00E+OO 4.93E+OO l.50E+Ol pCi/L u 6/14/2017 9:22 Beryllium-7 -4. 65E+OO l.12E+Ol N/A pCi/L u 6/14/2017 9:22 Potassium-40 2.SlE+Ol l.04E+Ol N/A pCi/L 6/14/2017 9:22 Manganese-54 l.43E-01 l.20E+OO l.50E+Ol pCi/L u 6/14/2017 9 :22 lron-59 8.70E-02 2.66E+OO 3.00E+Ol pCi/L u 6/14/2017 9:22 Cobalt-58 -4. 72E-01 l.29E+OO l.50E+Ol pCi/L u 6/14/2017 9 :22 Cobalt-60 l.40E-01 l.19E+OO l.50E+Ol pCi/L u 6/14/2017 9 :22 Zinc-65 -l.17E+OO 2.39E+OO 3.00E+Ol pCi/L u 6/14/2017 9 :22 Zirconium-95 -5.97E-01 2.31E+OO l.50E+Ol pCi/L u 6/14/2017 9 :22 Niobium-95 8.66E-01 1.31E+OO l.50E+Ol pCi/L u 6/14/2017 9:22 lodine-131 -2.55E+OO 4.60E+OO N/A pCi/L u 6/14/2017 9:22 Cesium-134 -2.41E-01 l.27E+OO l.50E+Ol pCi/L u 6/14/2017 9:22 Cesium-137 l.26E-01 l.25E+OO l.80E+Ol pCi/L u 6/14/2017 9:22 Barium-140 -4.56E+OO 9.84E+OO l.50E+Ol pCi/L u 6/14/2017 9:22 Lanthanum-140 -l.28E+OO 3.38E+OO l.50E+Ol pCi/L u 52

7/13/2017 9 :27 Be rylli um l.88E-01 l.39E+Ol N/A pCi/L u 7/13/2017 9 :27 Potassium -40 2.44E+Ol l.56E+Ol N/A pCi/L UI 7/13/2017 9:27 Manga nese-54 7.9 2E-01 l.49E+OO l.50E+Ol pCi/L u 7/13/2017 9 :27 lron-59 -9 .22E-01 3.18E+OO 3.00E+Ol pCi/L u 7/13/2017 9:27 Cob a lt-58 -4 .99E-01 l.42E+OO l. 50 E+Ol pCi/L u 7/13/2017 9 :27 Cobalt-60 3.81E-01 l.66E+OO l.50E+Ol pCi/L u 7/13/2017 9 :27 Zinc-65 5.52E-Ol 3.09E+OO 3 .00E+Ol pCi/L u 7/13/2017 9:27 Zirco niu m-95 2.06E+OO 2.89E+OO l.50E+Ol pCi/L u 7/13/2017 9 :27 Niobium-95 2.22E-01 l.69E+OO l.50E+Ol pCi/L u 7/13/2017 9:27 lod ine-131 -2.45E+OO 5.43E+OO N/A pCi/L u 7/13/2017 9: 27 Ce sium-134 l.15E-01 l.56E+OO l.50E+Ol pCi/L u 7/13/2017 9 :27 Cesiu m-137 9.44E-02 1.41E+OO l.80E+Ol pCi/L u 7/13/2017 9: 27 Barium -140 -2 .42E+OO l. llE+Ol l.50E+Ol pCi/L u 7/13/2017 9:27 Lanth a num -140 -l.85E+OO 3.63E+OO l.50E+Ol pCi/L u 8/15/2017 9 :17 Be ryllium-7 9 .23E+OO l.64E+Ol N/A pCi/L u 8/15/2017 9 :17 Potass ium-40 8.24E-01 l.50E+Ol N/A pCi/L u 8/15/2017 9:17 Ma ngan ese-54 -4. 54 E-01 l. 56E+OO l.50E+Ol pCi/L u 8/15/2017 9 :17 lron-59 -1. llE+OO 3.65E+OO 3 .00E+Ol pCi/L u 8/15/2017 9 :17 Cobalt-58 -4.28E-02 l.56E+OO 1.SOE+Ol pCi/L u 8/15/2017 9 :17 Coba lt-60 5.98E-01 l.58E+OO l.50E+Ol pCi/L u 8/15/2017 9 :17 Zinc-65 2.93E-01 3.22E+OO 3.00E+Ol pCi/L u 8/15/2017 9 :17 Zirco nium-95 -8. 67E-01 2.75E+OO 1.SOE+Ol pCi/L u 8/15/2017 9 :17 Niobium-95 -2.59E-01 l.86E+OO 1.SOE+Ol pCi/L u 8/15/2017 9:17 lod in e-131 l. 28E+OO 6.86E+OO N/A pCi/L u 8/15/2017 9 :17 Cesium-134 5.18E-01 l.67E+OO l.50E+Ol pCi/L u 8/15/2017 9:17 Cesi um-137 -l .42E-01 l.50E+OO l.80E+Ol pCi/L u 8/15/2017 9:17 Barium-140 l.38E+Ol l.36E+Ol l.50E+Ol pCi/L UI 8/15/2017 9:17 Lantha num -140 -l.95E+OO 4 .52E+OO l.50E+Ol pCi/L u 9/13/2017 21 :24 Beryllium-7 -6.96E+OO 1.17E+Ol N/A pCi/L u 9/13/2017 21 :24 Potassium -40 9 .82E-01 l.12E+Ol N/A pCi/L u 9/13/2017 21 :24 Manga nese-54 -4.44E-01 1.13E+OO 1.50E+Ol pCi/L u 9/13/2017 21:24 lron-59 -l. 58E+OO 2.64E+OO 3.00E+Ol pCi/L u 9/13/2017 21 :24 Co balt-58 -4 .04E-01 l. 37E+OO l.50E+Ol pCi/L u 9/13/2017 21 :24 Cobalt-60 -6 .96E-03 l.14E+OO l.50E+Ol pCi/L u 9/13/2017 21:24 Zinc-65 8 .19E-01 2.46E+OO 3 .00E+Ol pCi/L u 9/13/2017 21:24 Zircon ium-95 3 .92E-01 2.SOE+OO 1.50E+Ol pCi/L u 9/13/2017 21 :24 Niobium-95 -2. 19E-01 l.41E+OO l.50E+Ol pCi/L u 9/13/2017 21 :24 lod ine-131 7.SlE+OO 7.SlE+OO N/A pCi/L u 9/13/2017 21:24 Cesium-134 4.88E-01 1.41E+OO l.50E+Ol pCi/L u 9/13/2017 21 :24 Ce sium -137 -3 .09E-02 1. 24E+OO l.80E+Ol pCi/L u 9/13/2017 21 :24 Barium-140 -8 .75E+OO 1.31E+Ol 1.SOE+Ol pCi/L u 9/13/2017 21:24 Lanthanum-140 l.62E+OO 4 .47E+OO l.50E+Ol pCi/L u 10/17/2017 11:52 Beryllium-7 5.40E-01 l.47E+Ol N/A pCi/L u 10/17/201711:52 Potassium-40 l.06E+Ol l.77E+Ol N/A pCi/L u 10/17/2017 11:52 Manganese-54 -1.02E+OO 1.41E+OO 1.50E+Ol pCi/L u 10/17/2017 11:52 lron-59 3.40E-01 4 .00E+OO 3.00E+Ol pCi/L u 53

10/17/2017 11:52 Cobalt-58 -l. 74E-01 l.74E+OO l.50E+Ol pCi/L u 10/17/201711:52 Cobalt-60 5 .35E-01 l.81E+OO l.50E+Ol pCi/L u 10/17/201711:52 Zinc-65 -l. 52E+OO 3.02E+OO 3 .00E+Ol pCi/L u 10/17/201711:52 Zirconium-95 l.67E+OO 3 .03E+OO l.50E+Ol pCi/L u 10/17/2017 11:52 Niobium-95 2.59E-01 l.66E+OO l.50E+Ol pCi/L u 10/17/201711:52 lodine-131 7.92E-01 7.68E+OO N/A pCi/L u 10/17/2017 11:52 Cesium-134 l.llE+OO l.76E+OO l.50E+Ol pCi/L u 10/17/201711:52 Cesium-137 -2.85E-02 l.45E+OO l.80E+Ol pCi/L u 10/17/201711:52 Barium-140 -3.13E+OO l.47E+Ol l.50E+Ol pCi/L u 10/17/201711:52 Lanthanum-140 -9.47E-01 5.66E+OO l.50E+Ol pCi/L u 11/14/2017 20:54 Beryllium-7 -l.88E+OO l.16E+Ol N/A pCi/L u 11/14/2017 20:54 Potassium-40 2.38E+Ol l.24E+Ol N/A pCi/L UI 11/14/2017 20:54 Manganese-54 -3.67E-01 l.24E+OO l.50E+Ol pCi/L u 11/14/2017 20:54 lron l.72 E+OO 3.17E+OO 3 .00E+Ol pCi/L u 11/14/2017 20:54 Cobalt-58 l.05E-01 l.29E+OO l.50E+Ol pCi/L u 11/14/2017 20:54 Cobalt-60 2.83E-01 l.41E+OO 1.SOE+Ol pCi/L u 11/14/2017 20:54 Zinc-65 -5.35E-01 2.66E+OO 3.00E+Ol pCi/L u 11/14/2017 20:54 Zirconium-95 -5.44E-01 2.45E+OO l.50E+Ol pCi/L u 11/14/2017 20:54 Niobium-95 3.20E-01 l.53E+OO l.50E+Ol pCi/L u 11/14/2017 20:54 lodine-131 -2 .77E+OO 4 .85E+OO N/A pCi/L u 11/14/2017 20:54 Cesium-134 l.02E+OO l.54E+OO l.50E+Ol pCi/L u 11/14/2017 20:54 Cesium-137 -8. 20E-02 l.27E+OO l.80E+Ol pCi/L u 11/14/2017 20:54 Barium-140 l.98E+OO l.06E+Ol 1.SOE+Ol pCi/L u 11/14/2017 20 :54 Lanthanum-140 -9 .77E-01 3.37E+OO l.50E+Ol pCi/L u 12/13/2017 21:48 Beryllium-7 5 .06E+OO l.79E+Ol N/A pCi/L u 12/13/2017 21:48 Potassium-40 2.48E+Ol 1.49E+Ol N/A pCi/L UI 12/13/2017 21:48 Manganese-54 -4.37E-01 l.53E+OO l.50E+Ol pCi/L u 12/13/2017 21:48 lron-59 -7.08E-01 3.95E+OO 3.00E+Ol pCi/L u 12/13/2017 21:48 Cobalt-58 6.21E-01 l.71E+OO l.50E+Ol pCi/L u 12/13/2017 21:48 Cobalt-60 3.16E-01 l.60E+OO l.50E+Ol pCi/L u 12/13/2017 21:48 Zinc-65 -7.57E-02 3.40E+OO 3.00E+Ol pCi/L u 12/13/2017 21 :48 Zirconium-95 l.57E-02 3.23E+OO l.50E+Ol pCi/L u 12/13/2017 21:48 Niobium-95 -l.20E-02 2.00E+OO l.50E+Ol pCi/L u 12/13/2017 21:48 lodine-131 4.80E+OO l.50E+Ol N/A pCi/L u 12/13/2017 21:48 Cesium-134 -l.15E-01 l.68E+OO l.50E+Ol pCi/L u 12/13/2017 21:48 Cesium-137 -7. 34E-01 1.43E+OO l.80E+Ol pCi/L u 12/13/2017 21:48 Barium-140 -5.46E+OO 2.lOE+Ol l.50E+Ol pCi/L DLU 12/13/2017 21:48 Lanthanum-140 -2. 13E+OO 6.27E+OO l.50E+Ol pCi/L u 54

Tritium Results Sample Data for: "SW-1" (N-1.5)

Collect Date Parameter Result MDC LLD Units Qualifier 2/14/2017 10:19 Tritium 8.93E+03 5.28E+02 2.00E+03 pCi/L 5/14/2017 21:51 Tritium l.37E+04 6.SOE+02 2.00E+03 pCi/L 8/13/2017 22:04 Tritium 1.41E+04 4.14E+02 2.00E+03 pCi/L 11/14/2017 10:14 Trit ium 1.43E+04 6.14E+02 2.00E+03 pCi/L Sample Data for: "SW-3" (N-19 .3)

Collect Date Parameter Result MDC LLD Units Qualifier 2/28/2017 12:59 Tritium l.34E+Ol 5.31E+02 2.00E+03 pCi/L u 6/13/2017 13:09 Tritium -l.80E+02 6.41E+02 2.00E+03 pCi/L u 8/26/2017 5:47 Tritium -l.73E+02 4.14E+02 2.00E+03 pCi/L u 11/28/201714:14 Tritium -l.11E+02 6.08E+02 2.00E+03 pCi/L u U - Target isotope was analyzed for but not detected above the MDC and LLD.

55

Tritium Results Sample Data for: "SW-4" (NE-7.4)

Collect Date Parameter Result MDC LLD Units Qualifier 2/28/2017 11:31 Tritium -l. 34E+02 5.23E+02 2.00E+03 pCi/L u 6/13/2017 10:57 Tritium -2.46E+02 6.53 E+02 2.00E+03 pCi/L u 8/25/2017 22:24 Tritium l.55 E+02 4 .14E+02 2.00E+03 pCi/L u 11/28/2017 14:04 Tritium 7.32E+Ol 6.15E+02 2.00E+03 pCi/L u U - Target isotope was analyzed for but not detected above the MDC and LLD.

Sample Data for: "SW-5" (ESE-1.4)

Collect Date Parameter Result MDC LLD Units Qualifier 2/14/2017 9:48 Tritium l.17E+04 5.28E+02 2.00E+03 pCi/L 5/14/2017 21 :22 Trit ium l.44E+04 6.44E+02 2.00E+03 pCi/L 8/13/2017 21 :24 Tri tium 1.42E+04 4 .06E+02 2.00E+03 pCi/L 11/14/2017 9:48 Tritium l.37E+04 6.18E+02 2.00E+03 pCi/L 56

GRAPH 2** ENVIROMENTAl SURFACE WATER TRITIUM RESU lTS 25CtOI - - - - - - - - - - - - - - - - - - - - - - -

1.0l!04 -------------- -----------------------------------------

+ N-1.5 5.00:03 ----------------------------------------------------------

+ ESE-1.4 57

E. Squaw Creek and Lake Granbury Surface Water Program Surface water was collected at two monitoring locations. Table 1 --

Comanche Peak Nuclear Power Plant Radiological Environmental Monitoring Program details the location and types of analysis required.

Samples of water from Squaw Creek reservoir were collected at the monitoring location NNW-0.1. There is not a surface water drinking source within a mile of CPNPP. Monitoring location N-9.9 was used as a surface drinking water location based on the proximity of the City of Granbury intake to the Granbury potable water system. All surface water samples were collected weekly and then composited for lodine-131 analysis, gamma isotopic analysis, and gross beta analysis on a monthly basis. Tritium analysis was performed on a quarterly basis.

All samples were analyzed for gamma emitting radionuclides. The results are reported in Table 8 - Environmental Squaw Creek and Lake Granbury Surface Water Tritium, Gross Beta and Gamma Isotopic Results. There were no gamma emitting radionuclides identified in any of the twenty-four composite samples. Tritium reported in Squaw Creek reservoir ranged from 1.10E+04 pCi/1 to 1.61E+04 pCi/1 and averaged 1.27E+04 pCi/1.

Tritium reported from all Lake Granbury water samples indicated less than the required LLD as expected. Graph 4 - Environmental Squaw Creek and Lake Granbury Surface Water Tritium Results trends the results reported for the year 2017. Gross Beta results at the indicator location NNW-0 .1 ranged from 1.25+00 pCi/1 to 2.llE+Ol pCi/1 with an average of 12.6E+Ol pCi/1. Gross Beta results at the control location N-9.9 ranged from 1.51E+OO pCi/1 to 1.23E+Ol pCi/1 with an average of 6.06E+OO pCi/1. Graph 5 - Environmental Squaw Creek and Lake Granbury Surface Water Gross Beta Results trends the gross beta results for the two monitor locations and indicates no influence from Comanche Peak in the levels detected in the two different bodies of water. Past gross beta results for Lake Granbury have been as high as 1.23E+Ol pCi/1, which is still notably under the reportable levels for gross beta. The gross beta results received are within values previously reported and there is no reportable level for gross beta so no action is required at this time.

During the year 2017, there was one exception to the Surface Water Program.

IR-2018-002742- 1st QTR 2017 Surface water sample (SW2) for tritium indicated positive at 3000 pCi/L. This was identified during the review of the annual report. Results for the 2nd quarter are below LLD and the positive sample is below the Drinking water limit of 20000 pCi/L per the ODCM.

58

Table 8 -- Environmental Squaw Creek and Lake Granbury Surface Water Tritium, Gross Beta and Gamma Isotopic Results Sample Data For: "SW-2" U - Target isotope was analyzed for but not detected above the MDC and LLD DL-MDC > LLD UI - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qualifier 1/17/2017 11:40 BETA 1.23E+01 3.54E+OO 4.00E+OO pCi/L 1/17/201711:40 Manganese-54 8.21E-01 1.58E+OO 1.SOE+Ol pCi/L u 1/17/201711:40 lron-59 -2.88E+OO 3.77E+OO 3.00E+Ol pCi/L u 1/17/201711:40 Cobalt-58 4.06E-01 1.66E+OO 1.SOE+Ol pCi/L u 1/17/201711:40 Cobalt-60 -2.49E-01 1.57E+OO 1.SOE+Ol pCi/L u 1/17/201711:40 Zinc-65 -1.85E+OO 2.67E+OO 3.00E+Ol pCi/L u 1/17/201711:40 Zirconium-95 -9.78E-01 2.80E+OO 1.SOE+Ol pCi/L u 1/17/201711:40 Niobium-95 5.0lE-01 1.85E+OO 1.SOE+Ol pCi/L u 1/17/201711:40 lodine-131 5.31E+OO 9.53E+OO N/A pCi/L u 1/17/2017 11 :40 lodine-131 -2.72E-01 8.57E-01 1.00E+OO pCi/L u 1/17/201711:40 Cesium -134 6.56E-01 1.63E+OO 1.SOE+Ol pCi/L u 1/17/201711:40 Cesium -137 9.95E-01 1.61E+OO 1.80E+01 pCi/L u 1/17/201711:40 Barium-140 7.94E+OO 1.73E+01 1.SOE+Ol pCi/L DLU 1/17/201711:40 Lanthanum -140 -1.45E+OO 5.82E+OO 1.SOE+Ol pCi/L u 2/14/2017 23:06 BETA 6.04E+OO 3.17E+OO 4.00E+OO pCi/L 2/14/2017 23 :06 Manganese-54 1.18E-01 1.29E+OO 1.SOE+Ol pCi/L u 2/14/2017 23 :06 lron-59 5.0lE-02 3.25E+OO 3.00E+Ol pCi/L u 2/14/2017 23:06 Cobalt-58 -6.0SE-02 1.46E+OO 1.SOE+Ol pCi/L u 2/14/2017 23 :06 Cobalt-60 -9.35E-02 1.70E+OO 1.SOE+Ol pCi/L u 2/14/2017 23 :06 Zinc-65 5.22E+OO 2.93E+OO 3.00E+Ol pCi/L UI 2/14/2017 23 :06 Zirconium-95 -4.22E-01 2.SSE+OO 1.SOE+Ol pCi/L u 2/14/2017 23 :06 Niobium-95 5.42E-01 1.58E+OO 1.SOE+Ol pCi/L u 2/14/2017 23 :06 lodine-131 -2 .22E+OO 7.61E+OO N/A pCi/L u 2/14/2017 23:06 lodine-131 -2.81E-01 7.91E-01 1.00E+OO pCi/L u 2/14/2017 23 :06 Cesium-134 -6.98E-01 1.46E+OO 1.SOE+Ol pCi/L u 2/14/2017 23:06 Ce sium-137 4.23E-01 1.32E+OO 1.80E+01 pCi/L u 2/14/2017 23:06 Barium -140 -2.46E+OO 1.31E+01 1.SOE+Ol pCi/L u 2/14/2017 23 :06 Lanthanum-140 -1.57E+OO 4.17E+OO 1.SOE+Ol pCi/L u 3/14/2017 23:34 BETA 7.08E+OO 2.13E+OO 4.00E+OO pCi/L 3/14/2017 23:34 Manganese-54 1.99E-01 1.24E+OO 1.SOE+Ol pCi/L u 3/14/2017 23:34 lron-59 -6.68E-01 2.85E+OO 3.00E+Ol pCi/L u 3/14/2017 23:34 Cobalt-58 -9.06E-01 1.23E+OO 1.SOE+Ol pCi/L u 3/14/2017 23:34 Cobalt-60 8.SlE-02 1.19E+OO 1.SOE+Ol pCi/L u 3/14/2017 23:34 Zinc-65 1.22E+OO 2.SOE+OO 3.00E+Ol pCi/L u 3/14/2017 23 :34 Zirconium-95 6.58E-01 2.56E+OO 1.SOE+Ol pCi/L u 3/14/2017 23 :34 Niobium-95 1.99E+OO 1.32E+OO 1.SOE+Ol pCi/L UI 3/14/2017 23 :34 lodine-131 -2.45E-01 4.17E-01 1.00E+OO pCi/L u 3/14/2017 23 :34 lodine-131 3.11E+OO 7.70E+OO N/A pCi/L u 59

3/14/2017 23 :34 Cesium-134 4.92E-01 l.34E+OO l.50E+Ol pCi/L u 3/14/2017 23 :34 Cesium-137 -l.30E-02 l.35E+OO l.80E+Ol pCi/L u 3/14/2017 23:34 Barium-140 7.llE+OO l.45E+Ol l.50E+Ol pCi/L u 3/14/2017 23 :34 Lanthanum-140 -3 .90E-01 4.llE+OO l.50E+Ol pCi/L u 4/13/2017 11:23 BETA 4.22E+OO 3.23E+OO 4 .00E+OO pCi/L 4/13/2017 11:23 Manganese-54 7.43E-01 l.39E+OO l.50E+Ol pCi/L u 4/13/2017 11:23 lron l.99E+OO 2.72E+OO 3.00E+Ol pCi/L u 4/13/2017 11:23 Cobalt-58 2.30E-01 1.40E+OO l.50E+Ol pCi/L u 4/13/2017 11:23 Cobalt-60 5.76E-02 l.27E+OO l.50E+Ol pCi/L u 4/13/2017 11:23 Zinc-65 -l.09E-01 2.45E+OO 3.00E+Ol pCi/L u 4/13/2017 11:23 Zirconium-95 5.74E-01 2.52E+OO l.50E+Ol pCi/L u 4/13/2017 11:23 Niobium-95 l.22E+OO l.59E+OO l.50E+Ol pCi/L u 4/13/2017 11:23 lodine-131 5.86E-01 5.86E+OO N/A pCi/L u 4/13/2017 11:23 lodine-131 1.41E-01 7.0lE-01 l.OOE+OO pCi/L u 4/13/2017 11:23 Cesium-134 4 .79 E-02 l.32E+OO 1.SOE+Ol pCi/L u 4/13/2017 11:23 Cesium-137 5.76E-01 l.36E+OO l.80E+Ol pCi/L u 4/13/2017 11:23 Barium-140 -2.47E+OO l.lOE+Ol l.50E+Ol pCi/L u 4/13/2017 11:23 Lanthanum-140 -l.76E-01 3.55E+OO l.50E+Ol pCi/L u 5/15/2017 23 :50 BETA 5.00E+OO 2.68E+OO 4.00E+OO pCi/L 5/15/2017 23 :50 Manganese-54 2.25E-02 l.29E+OO l.50E+Ol pCi/L u 5/15/2017 23:50 lron-59 -1.00E+OO 3.21E+OO 3.00E+Ol pCi/L u 5/15/2017 23 :50 Cobalt-58 -1.38E-01 1.41E+OO 1.SOE+Ol pCi/L u 5/15/2017 23:50 Cobalt-60 4.llE-01 1.40E+OO l.50E+Ol pCi/L u 5/15/2017 23:50 Zinc-6 5 -7. lOE-02 2.SlE+OO 3.00E+Ol pCi/L u 5/15/2017 23 :50 Zirconium-95 9.87E-02 2.78E+OO l.50E+Ol pCi/L u 5/15/2017 23:50 Niobium-95 6.58E-02 l.54E+OO l.50E+Ol pCi/L u 5/15/2017 23 :50 lodine-131 l.15E+OO 8.07E+OO N/A pCi/L u 5/15/2017 23:50 lodine-131 -2.16E-01 5.70E-01 l.OOE+OO pCi/L u 5/15/2017 23:50 Cesium-134 2.70E-01 l.50E+OO l.50E+Ol pCi/L u 5/15/2017 23 :50 Cesium-137 l.53E-01 l.36E+OO l.80E+Ol pCi/L u 5/15/2017 23:50 Barium-140 l.15E+OO l.41E+Ol l.50E+Ol pCi/L u 5/15/2017 23:50 Lanthanum-140 -7.lOE-01 4.85E+OO l.50E+Ol pCi/L u 6/14/2017 10:38 BETA 7.17E+OO 2.64E+OO 4.00E+OO pCi/L 6/14/2017 10:38 Manganese-54 -5.89E-01 l.18E+OO l.50E+Ol pCi/L u 6/14/2017 10:38 lron-59 -l.75E-01 3.32E+OO 3.00E+Ol pCi/L u 6/14/2017 10:38 Cobalt-58 3.87E-01 l.59E+OO l.50E+Ol pCi/L u 6/14/2017 10:38 Cobalt-60 -2.90E-01 l.30E+OO l.50E+Ol pCi/L u 6/14/2017 10:38 Zinc-65 6.88E-01 2.97E+OO 3.00E+Ol pCi/L u 6/14/2017 10:38 Zirconium-95 8.91E-01 2.75E+OO l.50E+Ol pCi/L u 6/14/2017 10:38 Niobium-95 8 .71E-01 l.62E+OO l.50E+Ol pCi/L u 6/14/2017 10:38 lodine-131 -4.69E-02 8.72E-01 l.OOE+OO pCi/L u 6/14/2017 10:38 lodine-131 -2.69E+OO 4.99E+OO N/A pCi/L u 6/14/2017 10:38 Cesium-134 2.80E-01 l.54E+OO l.50E+Ol pCi/L u 6/14/2017 10:38 Cesium-137 -8.95E-02 l.42E+OO l.80E+Ol pCi/L u 6/14/2017 10:38 Barium-140 -2.96E+OO l.09E+Ol l.50E+Ol pCi/L u 6/14/2017 10:38 Lanthanum-140 5.62E-01 3.93E+OO l.50E+Ol pCi/L u 7/15/2017 11 :02 BETA 6.66E+OO 3.60E+OO 4.00E+OO pCi/L 60

7/15/2017 11:02 Manganese-54 9 .0lE-02 l.14E+OO l.50E+Ol pCi/L u 7/15/2017 11:02 lron -59 -6.21E-01 2.80E+OO 3.00E+Ol pCi/L u 7/15/2017 11:02 Cobalt-58 l.93E-02 l.23E+OO l.50E+Ol pCi/L u 7/15/2017 11:02 Cobalt-60 3 .60E-01 l.25E+OO l.50E+Ol pCi/L u 7/15/2017 11:02 Zinc-65 6.44E-01 2.45E+OO 3 .00E+Ol pCi/L u 7/15/2017 11:02 Zirconium-95 l.49E-01 2.37E+OO l.50E+Ol pCi/L u 7/15/2017 11:02 Niobium-95 2.04E+OO l.23E+OO l.50E+Ol pCi/L UI 7/15/2017 11:02 lodine-131 -2.23E-01 7 .92E-01 l.OOE+OO pCi/L u 7/15/2017 11:02 lodine-131 -4.78E-01 3 .74E+OO N/A pCi/L u 7/15/2017 11:02 Cesium-134 5.58E-01 l.39E+OO l.50E+Ol pCi/L u 7/15/2017 11:02 Cesium -137 -8 .31E-01 l.67E+OO l.80E+Ol pCi/L u 7/15/201711 :02 Barium-140 6.79E+OO 8.53E+OO l.50E+Ol pCi/L u 7/15/2017 11:02 Lanthanum-140 -l.19E+OO 2.72E+OO l.50E+Ol pCi/L u 8/15/2017 10:47 BETA 5.42E+OO 3.48E+OO 4 .00E+OO pCi/L 8/15/2017 10:4 7 Manganese-54 -5 .91E-02 l.38E+OO l.50E+Ol pCi/L u 8/15/2017 10:47 lron-59 l.14E+OO 3.94E+OO 3.00E+Ol pCi/L u 8/15/2017 10:47 Cobalt-58 6 .31E-01 l.66E+OO l.50E+Ol pCi/L u 8/15/2017 10:47 Cobalt-60 l.97E-01 l.48E+OO l.50E+Ol pCi/L u 8/15/2017 10:47 Zinc-65 2.12E+OO 3.llE+OO 3.00E+Ol pCi/L u 8/15/2017 10:47 Zircon ium-95 2.20E+OO 3 .16E+OO l.50E+Ol pCi/L u 8/15/2017 10:47 Niobium-95 -4.47E-0 1 l.81E+OO l.50E+Ol pCi/L u 8/15/2017 10:47 lodine-131 -9 .62E-0 1 5 .93E+OO N/A pCi/L u 8/15/2017 10:47 lodine-131 -l.89E-0 1 9.21E-01 l.OOE+OO pCi/L u 8/15/2017 10:47 Cesium-134 7.14E-01 l.68E+OO l.50E+Ol pCi/L u 8/15/2017 10:47 Cesium-137 2.40E-02 l.48E+OO l.80E+Ol pCi/L u 8/15/201710:47 Barium-140 5 .06E+OO l.25E+Ol l.50E+Ol pCi/L u 8/15/2017 10:47 Lanthanum-140 4.90E+OO 4.57E+OO l.50E+Ol pCi/L UI 9/13/2017 23:13 BETA 6.50E+OO 3.58E+OO 4 .00E+OO pCi/L 9/13/2017 23 :13 Manganese-54 6 .50E-01 l.48E+OO l.50E+Ol pCi/L u 9/13/2017 23 :13 lron-59 -4.84E-01 3.32E+OO 3.00E+Ol pCi/L u 9/13/2017 23 :13 Cobalt-58 -3.02E-01 l.50E+OO l.50E+Ol pCi/L u 9/13/2017 23 :13 Coba lt-60 7 .74E-01 l.58E+OO 1.SOE+Ol pCi/L u 9/13/2017 23 :13 Zinc-65 -2.llE-01 3 .13E+OO 3.00E+Ol pCi/L u 9/13/2017 23:13 Zirconium-95 3.46E-01 2.95E+OO l.50E+Ol pCi/L u 9/13/2017 23 :13 Niobium -95 4.67E-01 l.81E+OO l.50E+Ol pCi/L u 9/13/2017 23 :13 lodine-131 2.18E-01 7 .43E-01 l.OOE+OO pCi/L u 9/13/2017 23 :13 lodine-131 -3 .15E+OO 8 .64E+OO N/A pCi/L u 9/13/2017 23 :13 Cesium-134 l.03E+OO l. 65E+OO 1.SOE+Ol pCi/L u 9/13/2017 23 :13 Cesium-137 4 .62E-O l 1.49E+OO l.80E+Ol pCi/L u 9/13/2017 23 :13 Barium-140 -8.75E+OO l.42E+Ol l.50E+Ol pCi/L u 9/13/2017 23 :13 Lanthanum-140 2.14E-02 5 .83E+OO l.50E+Ol pCi/L u 10/17/2017 13:00 BETA 6.82E+OO 2.90E+OO 4 .00E+OO pCi/L 10/17/201713:00 Manganese-54 -7 .23E-01 l.56E+OO l.50E+Ol pCi/L u 10/17/2017 13 :00 lron-59 7.74E-01 3.83E+OO 3.00E+Ol pCi/L u 10/17/2017 13 :00 Cobalt-58 3.39E-01 l.77E+OO l.50E+Ol pCi/L u 10/17/201713 :00 Cobalt-60 -4 .41E-01 l.66E+OO l.50E+Ol pCi/L u 10/17/201713 :00 Zinc-65 l.48E-01 3.45E+OO 3 .00E+Ol pCi/L u 61

10/17/2017 13 :00 Zirconium-95 4.85E-01 3 .22E+OO l.SOE+Ol pCi/L u 10/17/201713:00 Niobium-95 -2.16E+OO l.93E+OO l.SOE+Ol pCi/L u 10/17/2017 13 :00 lodine-131 -5.32E-01 6.82E+OO N/A pCi/L u 10/17/2017 13:00 lodine-131 2.67E-01 9 .04E-01 l.OOE+OO pCi/L u 10/17/2017 13:00 Cesium-134 -6.04E-01 l.68E+OO l.SOE+Ol pCi/L u 10/17/201713:00 Cesium-137 -l.23E+OO l.SOE+OO l.80E+Ol pCi/L u 10/17/2017 13:00 Barium-140 -2.36E+OO l.37E+Ol l.SOE+Ol pCi/L u 10/17/201713:00 Lanthanum-140 -5.31E+OO 4 .71E+OO l.SOE+Ol pCi/L u 11/14/2017 21:59 BETA l.SlE+OO l.72E+OO 4.00E+OO pCi/L u 11/14/2017 21 :59 Manganese-54 -5.56E-02 l.16E+OO l.SOE+Ol pCi/L u 11/14/2017 21:59 lron-59 -4.85E-01 2.65E+OO 3.00E+Ol pCi/L u 11/14/2017 21:59 Cobalt-58 -3.72E-01 l.28E+OO l.SOE+Ol pCi/L u 11/14/2017 21 :59 Cobalt-60 l.53E-01 l.25E+OO l.SOE+Ol pCi/L u 11/14/2017 21:59 Zinc-65 -4.33 E-02 2.60E+OO 3.00E+Ol pCi/L u 11/14/2017 21 :59 Zirconium-95 8.58E-01 2.36E+OO l.SOE+Ol pCi/L u 11/14/2017 21:59 Niobium-95 7.18E-01 l.29E+OO l.SOE+Ol pCi/L u 11/14/2017 21 :59 lodine-13 1 -2.79E-01 8.71E-01 l.OOE+OO pCi/L u 11/14/2017 21:59 lodine-131 -6.23E-01 4 .95E+OO N/A pCi/L u 11/14/2017 21:59 Cesium-134 8.67E-01 l.33E+OO l.SOE+Ol pCi/L u 11/14/2017 21:59 Cesium -137 8.97E-02 l.22E+OO l.80E+Ol pCi/L u 11/14/2017 21:59 Barium-140 -1.SOE+OO 9.92E+OO l.SOE+Ol pCi/L u 11/14/2017 21:59 Lanthanum-140 -2.20E+OO 3.37E+OO l.SOE+Ol pCi/L u 12/13/2017 23:07 BETA 4.0lE+OO 3.63E+OO 4.00E+OO pCi/L 12/13/2017 23 :07 Manganese-54 -2.93E-01 l.38E+OO l.SOE+Ol pCi/L u 12/13/2017 23:07 lron-59 2.82E-01 3 .80E+OO 3.00E+Ol pCi/L u 12/13/2017 23 :07 Cobalt-58 -7.12E-02 l.54E+OO l.SOE+Ol pCi/L u 12/13/2017 23 :07 Cobalt-60 -l.08E+OO l.38E+OO l.SOE+Ol pCi/L u 12/13/2017 23:07 Zinc-65 -l. 19E+OO 2.72E+OO 3.00E+Ol pCi/L u 12/13/2017 23:07 Zirconium-95 -l.14E+OO 2.84E+OO l.SOE+Ol pCi/L u 12/13/2017 23 :07 Niobium-95 2.31E-01 l.61E+OO l.SOE+Ol pCi/L u 12/13/2017 23 :07 lodine-131 -2.36E-01 9 .52E-01 l.OOE+OO pCi/L u 12/13/2017 23:07 lodine-131 -5.43E+OO l.12E+Ol N/A pCi/L u 12/13/2017 23 :07 Cesium-134 2.39E-01 l.47E+OO l.SOE+Ol pCi/L u 12/13/2017 23 :07 Cesium-137 l.49E+OO l.29E+OO l.80E+Ol pCi/L UI 12/13/2017 23 :07 Barium-140 -l.72E+OO l.80E+Ol l.SOE+Ol pCi/L DLU 12/13/2017 23:07 Lanthanum-140 -3.42E-01 6.16E+OO l.SOE+Ol pCi/L u 62

l Sample Data For: "SW-6" U - Target isotope was ana lyzed for but not detected above the MDC and LLD DL-MDC > LLD U1 - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qua lifier 1/17/2017 8 :19 BETA l.21E+Ol 7.93E+OO 4 .00E+OO pCi/L DL 1/17/2017 8:19 Ma nga nese-54 l.81E-01 l.16E+OO l.SOE+Ol pCi/L u 1/17/2017 8 :19 lron-59 l.56E-01 2.84E+OO 3.00E+Ol pCi/L u 1/17/2017 8:19 Cobalt-58 4.99E-01 l.37E+OO l.SOE+Ol pCi/L u 1/17/2017 8 :19 Cobalt-60 2.lSE-01 l.22E+OO l.SOE+Ol pCi/L u 1/17/2017 8:19 Zin c-65 8.47E-01 2.SlE+OO 3.00E+Ol pCi/L u 1/17/2017 8:19 Zirconium-95 7.37E-01 2.47E+OO l.SOE+Ol pCi/L u 1/17/2017 8 :19 Niobium-95 l.28E+OO l.30E+OO l.SOE+Ol pCi/L u 1/17/2017 8 :19 lodine-131 -l.53E-05 7 .04E-01 l.OOE+OO pCi/L u 1/17/2017 8:19 lodin e-13 1 l.30E+OO 7.72E+OO N/A pCi/L u 1/17/2017 8:19 Ces ium-134 l.25E-01 l.28E+OO l.SOE+Ol pCi/L u 1/17/2017 8 :19 Cesium-137 l.12E+OO l.19E+OO l.80E+Ol pCi/L u 1/17/2017 8 :19 Barium-140 6.58E+OO l.36E+Ol l.SOE+Ol pCi/L u 1/17/2017 8 :19 Lanthanum-140 -2.54E-02 4 .14 E+OO l.SOE+Ol pCi/L u 2/14/2017 19:25 BETA 2.ll E+Ol 5.93E+OO 4.00E+OO pCi/L DL 2/14/2017 19 :25 Manganese-54 7.58E-01 2.0SE+OO l.SOE+Ol pCi/L u 2/14/2017 19:25 lron-59 -3.69E-01 4 .72E+OO 3.00E+Ol pCi/L u 2/14/2017 19:25 Cobalt-58 -4.44E-01 2.14E+OO l.SOE+Ol pCi/L u 2/14/2017 19:25 Cobalt-60 2.65E-02 l.96E+OO l.SOE+Ol pCi/L u 2/14/2017 19:25 Zinc-65 8.98E-01 4 .17E+OO 3.00E+Ol pCi/L u 2/14/2017 19:25 Zirconium-95 2.40E-01 3.SlE+OO l.SOE+Ol pCi/L u 2/14/2017 19:25 Niob ium -95 -3 .22E+OO 2.26E+OO l.SOE+Ol pCi/L u 2/14/2017 19:25 lodine-13 1 6.SSE-01 8 .04E-01 l.OOE+OO pCi/L u 2/14/2017 19:25 lodine-131 l.08E+OO 9.99E+OO N/A pCi/L u 2/14/2017 19:25 Cesium-134 9 .83E-01 2.20E+OO l.SOE+Ol pCi/L u 2/14/2017 19:25 Cesium-137 3.62E-01 l.84E+OO l.80E+Ol pCi/L u 2/14/2017 19:25 Barium-140 -7.67E+OO l.86E+Ol l.SOE+Ol pCi/L DLU 2/14/2017 19:25 Lanthanum-140 7.07E+OO 6.34E+OO l.SOE+Ol pCi/L UI 3/14/2017 19:27 BETA l.54E+Ol 3.16E+OO 4.00E+OO pCi/L 3/14/2017 19:27 Manganese-54 6.77E-01 l.18E+OO l.SOE+Ol pCi/L u 3/14/2017 19:27 lron-59 2.52E-01 2.77E+OO 3.00E+Ol pCi/L u 3/14/2017 19:27 Cobalt-58 -3. 61E-01 l.20E+OO l.SOE+Ol pCi/L u 3/14/2017 19:27 Cobalt-60 -l.45E+OO l.20E+OO l.SOE+Ol pCi/L u 3/14/2017 19:27 Zinc-65 7.72E-01 2.34E+OO 3.00E+Ol pCi/L u 3/14/2017 19 :27 Zirconium-95 -2.93E+OO 2.lSE+OO l.SOE+Ol pCi/L u 3/14/2017 19:27 Niobium-95 2.44E-01 l.34E+OO l.SOE+Ol pCi/L u 3/14/2017 19:27 lodine-13 1 -6.36E-02 4 .25E-01 l.OOE+OO pCi/L u 3/14/2017 19:27 lodine-131 2.20E+OO 7 .SOE+OO N/A pCi/L u 3/14/2017 19:27 Cesium-134 2.18E-01 l.23E+OO l.SOE+Ol pCi/L u 3/14/2017 19 :27 Cesium-137 -5.31E-01 l.17E+OO l.80E+Ol pCi/L u 3/14/2017 19:27 Barium-140 -5.27E+OO l.22E+Ol l.SOE+Ol pCi/L u 63

3/14/2017 19:27 Lanthanum -140 3.64E-01 3.54E+OO 1.50E+01 pCi/L u 4/13/2017 7:56 BETA 9.33E+OO 7.29E+OO 4.00E+OO pCi/L DL 4/13/2017 7:56 Manganese-54 4.53E-02 1.11E+OO 1.50E+01 pCi/L u 4/13/2017 7 :56 lron-59 -2.56E-01 2.55E+OO 3.00E+Ol pCi/L u 4/13/2017 7:56 Cobalt-58 -3.21E-01 1.15E+OO 1.50E+01 pCi/L u 4/13/2017 7:56 Cobalt-60 4.52E-01 1.21E+OO 1.50E+01 pCi/L u 4/13/2017 7:56 Zinc-65 1.20E+OO 2.44E+OO 3.00E+Ol pCi/L u 4/13/2017 7:56 Zirconium -95 -2.79E-01 2.33E+OO 1.50E+01 pCi/L u 4/13/2017 7:56 Niobium-95 2.70E-01 1.23E+OO 1.50E+01 pCi/L u 4/13/2017 7:56 lodine-13 1 9.80E-02 7.50E-01 1.00E+OO pCi/L u 4/13/2017 7:56 lod ine-131 -2.SOE-01 5.87E+OO N/A pCi/L u 4/13/2017 7:56 Ces ium-134 -5.30E-01 1.12E+OO 1.50E+01 pCi/L u 4/13/2017 7:56 Cesium-137 1.02E+OO 1.31E+OO 1.80E+01 pCi/L u 4/13/2017 7:56 Barium -140 3.15E+OO 1.19E+01 1.50E+01 pCi/L u 4/13/2017 7:56 Lanthanum-140 -1.26E+OO 3.32E+OO 1.50E+01 pCi/L u 5/15/2017 20:05 BETA 1.27E+01 6.25E+OO 4.00E+OO pCi/L DL 5/15/2017 20 :05 Manganese-54 9.78E-02 1.69E+OO 1.50E+01 pCi/L u 5/15/2017 20 :05 lron-59 -2.48E+OO 3.97E+OO 3.00E+Ol pCi/L u 5/15/2017 20:05 Cobalt-58 -6.16E-01 1.91E+OO 1.50E+01 pCi/L u 5/15/2017 20 :05 Cobalt-60 -5.67E-01 1.62E+OO 1.50E+01 pCi/L u 5/15/2017 20:05 Zinc-65 2.92E+OO 3.99E+OO 3.00E+Ol pCi/L u 5/15/2017 20:05 Zircon ium-95 6.14E-01 3.37E+OO 1.50E+01 pCi/L u 5/15/2017 20:05 Niobium-95 2.18E+OO 2.19E+OO 1.50E+01 pCi/L u 5/15/2017 20:05 lodine-131 1.69E-01 6.74E-01 1.00E+OO pCi/L u 5/15/2017 20 :05 lodine-131 -1.16E+OO 1.02E+01 N/A pCi/L u 5/15/2017 20 :05 Cesium -134 5.25E-01 1.85E+OO 1.50E+01 pCi/L u 5/15/2017 20:05 Cesium-137 -8.08E-01 1.58E+OO 1.80E+01 pCi/L u 5/15/2017 20:05 Barium-140 2.68E-01 1.83E+01 1.50E+01 pCi/L DLU 5/15/2017 20:05 Lanthanum-140 -6 .98E-01 5.96E+OO 1.50E+01 pCi/L u 6/14/2017 7:46 BETA 1.46E+01 3.92E+OO 4.00E+OO pCi/L 6/14/2017 7:46 Manganese-54 6.90E-01 1.42E+OO 1.50E+01 pCi/L u 6/14/2017 7 :46 lron-59 -1.18E+OO 3.20E+OO 3.00E+Ol pCi/L u 6/14/2017 7 :46 Cobalt-58 -2 .29E-01 1.60E+OO 1.50E+01 pCi/L u 6/14/2017 7:46 Cobalt-60 2.99E-01 1.55E+OO 1.50E+01 pCi/L u 6/14/2017 7:46 Zinc-65 -4.76E-01 2.72E+OO 3.00E+Ol pCi/L u 6/14/2017 7:46 Zircon ium-95 1.06E+OO 2.89E+OO 1.50E+01 pCi/L u 6/14/2017 7:46 Niobium-95 -1.35E+OO 1.75E+OO 1.50E+01 pCi/L u 6/14/2017 7:46 lodine-131 -1.26E-01 8.21E-01 1.00E+OO pCi/L u 6/14/2017 7:46 lodine-131 -3.40E+OO 5.41E+OO N/A pCi/L u 6/14/2017 7 :46 Cesium-134 -1.66E-01 1.63E+OO 1.50E+01 pCi/L u 6/14/2017 7 :46 Cesium-137 1.20E-01 1.55E+OO 1.80E+01 pCi/L u 6/14/2017 7 :46 Barium-140 -1.04E+OO 1.24E+01 1.50E+01 pCi/L u 6/14/2017 7 :46 Lanthanum -140 -1.47E+OO 3.95E+OO 1.50E+01 pCi/L u 7/15/2017 7 :48 BETA 1.00E+Ol 5.09E+OO 4.00E+OO pCi/L DL 7/15/2017 7:48 Manganese-54 -1.42E-01 1.42E+OO 1.50E+01 pCi/L u 7/15/2017 7:48 lron-59 -6.46E-01 3.21E+OO 3.00E+Ol pCi/L u 7/15/2017 7:48 Cobalt-58 9.87E-02 1.51E+OO 1.50E+01 pCi/L u 64

7/15/2017 7:48 Cobalt-60 -7.0lE-01 1.42E+OO l.50E+Ol pCi/L u 7/15/2017 7 :48 Zinc-65 -l.43E+OO 2.80E+OO 3.00E+Ol pCi/L u 7/15/2017 7 :48 Zirconium-95 5.25E-01 2.77E+OO l.50E+Ol pCi/L u 7/15/2017 7:48 Niobium-95 6.19E-01 l.74E+OO l.50E+Ol pCi/L u 7/15/2017 7:48 lodine-131 5.89E-01 4.47E+OO N/A pCi/L u 7/15/2017 7 :48 lodine-131 -7.67E-02 8.98E-01 l.OOE+OO pCi/L u 7/15/2017 7:48 Cesium-134 l.54E-01 l.61E+OO l.50E+Ol pCi/L u 7/15/2017 7 :48 Cesium-137 3.64E-01 l.55E+OO l.80E+Ol pCi/L u 7/15/2017 7 :48 Barium-140 -4 .78E+OO 9.llE+OO l.50E+Ol pCi/L u 7/15/2017 7 :48 Lanthanum-140 -2.00E-02 3.55E+OO l.50E+Ol pCi/L u 8/15/2017 7 :39 BETA l.07E+Ol 4 .32E+OO 4 .00E+OO pCi/L DL 8/15/2017 7:39 Manganese-54 2.18E-01 l.12E+OO l.50E+Ol pCi/L u 8/15/2017 7:39 lron-59 -5.63E-01 2.64E+OO 3.00E+Ol pCi/L u 8/15/2017 7 :39 Cobalt-58 l.22E-01 l.20E+OO l.50E+Ol pCi/L u 8/15/2017 7 :39 Cobalt-60 -2.91E-01 l.20E+OO l.50E+Ol pCi/L u 8/15/2017 7 :39 Zinc-65 3.29E-01 2.32E+OO 3.00E+Ol pCi/L u 8/15/2017 7 :39 Zirconium -95 9.20E-01 2.32E+OO l.50E+Ol pCi/L u 8/15/2017 7 :39 Niobium-95 4 .75E-01 l.31E+OO l.50E+Ol pCi/L u 8/15/2017 7:39 lodine-131 -5.72E-01 9.llE-01 l.OOE+OO pCi/L u 8/15/2017 7:39 lodin e-13 1 8.37E-01 5.02E+OO N/A pCi/L u 8/15/2017 7:39 Cesium-134 2.92E-01 l.22E+OO l.50E+Ol pCi/L u 8/15/2017 7:39 Cesium-137 4.22E-02 l.13E+OO l.80E+Ol pCi/L u 8/15/2017 7 :39 Barium-140 -l.95E+OO l.OlE+Ol l.50E+Ol pCi/L u 8/15/2017 7 :39 Lanthanum-140 -2.04E+OO 2.82E+OO l.50E+Ol pCi/L u 9/13/2017 19 :41 BETA l.94E+Ol 7.45E+OO 4.00E+OO pCi/L DL 9/13/2017 19:41 Manganese-54 3.45E-01 l.43E+OO l.50E+Ol pCi/L u 9/13/2017 19 :41 lron-59 -6.SOE-01 3.63E+OO 3.00E+Ol pCi/L u 9/13/2017 19:41 Cobalt-58 -3.22E-02 l.51E+OO l.50E+Ol pCi/L u 9/13/2017 19:41 Cobalt-60 3.07E-01 l.49E+OO l.50E+Ol pCi/L u 9/13/2017 19:41 Zinc-65 5.36E-01 2.96E+OO 3.00E+Ol pCi/L u 9/13/2017 19 :41 Zirconium-95 2.64E-01 2.76E+OO l.50E+Ol pCi/L u 9/13/2017 19 :41 Niobium-95 -1 .92E-01 l.57E+OO l.50E+Ol pCi/L u 9/13/2017 19 :41 lodine-131 -2.59E+OO 8.07E+OO N/A pCi/L u 9/13/2017 19:41 lodine-131 3.56E-01 8.86E-01 l.OOE+OO pCi/L u 9/13/2017 19:41 Cesium-134 -5.04E-01 l.42E+OO l.50E+Ol pCi/L u 9/13/2017 19:41 Cesium-137 -l.74E-01 l.24E+OO l.80E+Ol pCi/L u 9/13/2017 19 :41 Barium -140 3.57E+OO l.50E+Ol l.50E+Ol pCi/L u 9/13/2017 19 :41 Lanthanum -140 -1.43E-01 4.88E+OO l.50E+Ol pCi/L u 10/17/2017 10:20 BETA l.65E+Ol 6.20E+OO 4.00E+OO pCi/L DL 10/17/2017 10:20 Manganese-54 l.87E-01 l.25E+OO l.50E+Ol pCi/L u 10/17/2017 10:20 lron-59 -7.49E-01 2.89E+OO 3.00E+Ol pCi/L u 10/17/201710:20 Cobalt-58 2.63E+OO l.25E+OO l.50E+Ol pCi/L UI 10/17/2017 10:20 Cobalt-60 -l.80E-01 l.63E+OO l.50E+Ol pCi/L u 10/17/201710:20 Zinc-65 -5.60E-01 2.76E+OO 3.00E+Ol pCi/L u 10/17/2017 10:20 Zirconium-95 -l.86E-01 2.45E+OO l.50E+Ol pCi/L u 10/17/2017 10:20 Niobium-95 8.96E-01 1.49E+OO l.50E+Ol pCi/L u 10/17/2017 10:20 lodine-131 6.48E-01 6.94E+OO N/A pCi/L u 65

10/17/2017 10:20 lodine-131 2.27E-01 9.37E-01 1.00E+OO pCi/L u 10/17/201710:20 Cesium-134 9.47E-01 1.SOE+OO 1.SOE+Ol pCi/L u 10/17/201710:20 Cesium-137 -7.84E-02 1.35E+OO 1.80E+01 pCi/L u 10/17/2017 10:20 Barium-140 -4.32E-01 1.34E+01 1.SOE+Ol pCi/L u 10/17/2017 10:20 Lanthanum -140 -1.48E+OO 4.03E+OO 1.SOE+Ol pCi/L u 11/14/2017 19:20 BETA 1.25E+OO 2.59E+OO 4.00E+OO pCi/L u 11/14/2017 19:20 Manganese-54 -1.85E-01 1.12E+OO 1.SOE+Ol pCi/L u 11/14/2017 19:20 lron-59 -6.71E-01 2.65E+OO 3.00E+Ol pCi/L u 11/14/2017 19:20 Cobalt-58 2.18E-01 1.23E+OO 1.SOE+Ol pCi/L u 11/14/2017 19:20 Cobalt-60 -2.40E-01 1.17E+OO 1.SOE+Ol pCi/L u 11/14/2017 19:20 Zinc-65 -3. 74E-01 2.25E+OO 3.00E+Ol pCi/L u 11/14/2017 19:20 Zirconium-95 3.89E-01 2.26E+OO 1.SOE+Ol pCi/L u 11/14/2017 19:20 Niobium-95 2.14E-02 1.41E+OO 1.SOE+Ol pCi/L u 11/14/2017 19:20 lodine-131 -2.27E-01 9.41E-01 1.00E+OO pCi/L u 11/14/2017 19:20 lodine-131 -2. lOE-02 4.82 E+OO N/A pCi/L u 11/14/2017 19:20 Cesium-134 8.30E-01 1.37E+OO 1.SOE+Ol pCi/L u 11/14/2017 19:20 Cesium-137 3.73 E-02 1.20E+OO 1.80E+Ol pCi/L u 11/14/2017 19:20 Barium -140 -5.08E+OO 9.35E+OO 1.SOE+Ol pCi/L u 11/14/2017 19 :20 Lanthanum-140 -1.02E+OO 3.34E+OO 1.SOE+Ol pCi/L u 12/13/2017 19:55 BETA 8.03E+OO 3.98E+OO 4.00E+OO pCi/L 12/13/2017 19:55 Manganese-54 1.45E-01 1.49E+OO 1.SOE+Ol pCi/L u 12/13/2017 19:55 lron-59 -9 .lOE-02 4.41E+OO 3.00E+Ol pCi/L u 12/13/2017 19:55 Cobalt-58 -3.34E-01 1.80E+OO 1.SOE+Ol pCi/L u 12/13/2017 19:55 Cobalt-60 -4.09E-01 1.62E+OO 1.SOE+Ol pCi/L u 12/13/2017 19:55 Zinc-65 -1.67E+OO 3.14E+OO 3.00E+Ol pCi/L u 12/13/2017 19:55 Zirconium-95 5.53E-01 3.lOE+OO 1.SOE+Ol pCi/L u 12/13/2017 19:55 Niobium-95 -1.43E+OO 2.00E+OO 1.SOE+Ol pCi/L u 12/13/2017 19:55 lodine-131 5.25E+OO 1.42E+01 N/A pCi/L u 12/13/2017 19:55 lodine-131 -2.48E-01 8.96E-01 1.00E+OO pCi/L u 12/13/2017 19:55 Cesium-134 8.16E-01 1.80E+OO 1.SOE+Ol pCi/L u 12/13/2017 19:55 Cesium-13 7 -8.16E-02 1.48E+OO 1.80E+Ol pCi/L u 12/13/2017 19:55 Barium -140 9.83 E+OO 2.20E+01 1.SOE+Ol pCi/L DLU 12/13/2017 19:55 Lanthanum -140 -1.33E+OO 7.88E+OO 1.SOE+Ol pCi/L u 66

Tritium Results Sample Data for: "SW-2" Collect Date Parameter Result MDC LLD Units Qualifier 2/14/2017 11:34 Triti um 3.00E+03 5.18E+02 2.00E+03 pCi/L 5/14/2017 22 :38 Tritium -2.72E+02 6.25E+02 2.00E+03 pCi/L u 8/15/2017 23: 13 Tritium 5.84E+Ol 4 .11E+02 2.00E+03 pCi/L u 11/14/2017 11:07 Tritium -8.98E+Ol 6.14E+02 2.00E+03 pCi/L u U - Target isotope was analyzed for but not detected above the MDC and LLD.

Sample Data for: "SW-6" Collect Date Param et er Result MDC LLD Units Qualifier 2/14/2017 7:27 Triti um l.26E+04 5.32E+02 2.00E+03 pCi/L 5/14/2017 19:46 Trit ium 1.45E+04 6.49E+02 2.00E+03 pCi/L 8/15/2017 19:41 Tritium l.33E+04 3.96E+02 2.00E+03 pCi/L 11/14/2017 7:55 Tritium l.32E+04 6.00E+02 2.00E+03 pCi/L 67

Graph 3 -- Squaw Creek Maximum Tritium Values 30000 25000 00..

'+-

0 20000 Cl)

~

C

> 15000 ~ Maximum ... 1 10000 5000 0

Yearly Maximum 68

Graph 4--Enviromental Squaw Creek and Lake Granbury Surface Water Tritium Resu lts 2.SOE+04 2.00E+04 --------------- ------------------------------------------

, l.SOE+04 - + - NNW-0.1 u

C.

0

c~ -a- N-9.9

, 1.00E+04 ------------------------------------------ ---------------

S~OE+ra ----------------------------------------------------------

o.oOE+oo **~-1aa--aai---1aa--aai---1aa--aai---iaa--11ai---i*----*..--*----1*.---*i---1aa--aA.~..*..-...,**

69

Graph 5 --Enviromental Squaw Creek and Lake Granbury Surface Water Gross Beta Resu Its 3.00E+Ol 2.SOE+01 - -- - - - - - ----- - - - - - - - - - - -- - -- - -- - - -- - - - - - - - - - - - - - - - - - - - - - -

l.SOE+Ol - - - -- --

~ N-9.9 S.OOE+OO -

..._NNW-0.1 O.OOE+OO

o

F. Ground Water Program Table 1 - Comanche Peak Nuclear Power Plant Radiological Environmental Monitoring Program specifies the five groundwater monitoring locations. Groundwater supplies in the site area are not affected by plant effluents and are sampled only to provide confirmation that groundwater is not affected by plant discharges. Groundwater samples were collected quarterly and analyzed for gamma isotopes and tritium at each location.

A total of twenty groundwater samples were collected from the five different monitoring locations. There were no radionuclides identified in any of the samples. All required LLDs were met for each required gamma emitting radionuclide. Tritium analysis was performed on twenty samples, all indicated less than the required LLD. Results for all the groundwater analyses are reported in Table 9 - Environmental Groundwater Tritium and Gamma Isotopic Results. These results confirm that plant discharges are having no effect on groundwater in the area surrounding Comanche Peak.

Groundwater samples are taken quarterly in accordance with STA-654, "Groundwater Protection Program".

During the year 2017, there were no exceptions to the Ground Water Program.

71

Table 9 -- Environmental Groundwater Tritium and Gamma Isotopic Results GW-1 Collect Date Parameter Result MDC LLD Units Qualifier Reportable Levels 3/28/2017 8:13 Tritium -5.18E+Ol 6.36E+02 2.00E+03 pCi/L u 2.00E+04 3/28/2017 8:13 Manganese-54 -6.85E-01 1.32E+OO 1.SOE+Ol pCi/L u l.OOE+03 3/28/2017 8:13 lron -59 -1. 73E+OO 2.58E+OO 3.00E+Ol pCi/L u 4.00E+02 3/28/2017 8:13 Cobalt-58 -1.44E-01 1.38E+OO l .SOE+Ol pCi/L u l .OOE+03 3/28/2017 8:13 Cobalt-60 -1.26E+OO l.43E+OO 1.SOE+Ol pCi/L u 3.00E+02 3/28/2017 8:13 Zinc-65 8.19E-01 2.80E+OO 3.00E+Ol pCi/L u 3.00E+02 3/28/2017 8: 13 Zirconium-95 -1.0SE+OO 2.43E+OO l .SOE+Ol pCi/L u 4.00E+02 3/28/2017 8:13 lodine -131 l.92E+OO 2.65E+OO N/A pCi/L u 4.00E+02 3/28/2017 8:13 Cesium-134 3.75E-01 l.SlE+OO l.SOE+Ol pCi/L u 2.00E+Ol 3/28/2017 8:13 Ces ium -137 l.20E-04 l.SOE+OO l.80E+Ol pCi/L u 3.00E+Ol 3/28/2017 8:13 Barium-140 4.12E-01 7.47E+OO l.SOE+Ol pCi/L u S.OOE+Ol 3/28/2017 8:13 Lant hanum -140 3.54E-01 2.40E+OO l.SOE+Ol pCi/L u 2.00E+02 6/27/2017 7:45 Tritium 3.30E+Ol S.74E+02 2.00E+03 pCi/L u 2.00E+04 6/27/2017 7:45 Mangan e se- 54 -6.31E-01 l.26E+OO l.SOE+Ol pCi/L u l .OOE+03 6/27/2017 7:45 lron -59 -1.74E-01 2.64E+OO 3.00E+Ol pCi/L u 4.00E+02 6/27/2017 7:45 Coba lt-58 -6.99E-01 l .27E+OO l.SOE+Ol pCi/L u l .OOE+03 6/27/2017 7:45 Cobalt-60 -3.27E-01 l .26E+OO l.SOE+Ol pCi/L u 3.00E+02 6/27/2017 7:45 Zinc-65 4.98E-01 2.71E+OO 3.00E+Ol pCi/L u 3.00E+02 6/27/2017 7:45 Zirconium-95 3.04E-01 2.32E+OO l.SOE+Ol pCi/L u 4.00E+02 6/27/2017 7:45 lodine -131 -3.40E-01 1. 74E+OO N/A pCi/L u 4.00E+02 6/27/2017 7:45 Cesium -134 -2.25E-01 l.43E+OO l .SOE+Ol pCi/L u 2.00E+Ol 6/27/2017 7:45 Cesium -137 l.33E-02 l .37E+OO l.80E+Ol pCi/L u 3.00E+Ol 6/27/2017 7:45 Barium-140 3.75E+OO 6.06E+OO 1.SOE+Ol pCi/L u 5.00E+Ol 6/27/2017 7:45 Lanthanum-140 -5.67E-01 l .73E+OO l.SOE+Ol pCi/L u 2.00E+02 9/26/2017 7:23 Tritium 3.08E+02 S.19E+02 2.00E+03 pCi/L u 2.00E+04 9/26/2017 7:23 Manganese- 54 3.18E-01 l .21E+OO l .SOE+Ol pCi/L u l .OOE+03 9/26/2017 7:23 lron-59 3.0SE-01 2.80E+OO 3.00E+Ol pCi/L u 4.00E+02 9/26/2017 7:23 Cobalt-58 2.32E-01 l .20E+OO l .SOE+Ol pCi/L u l.OOE+03 9/26/2017 7:23 Cobalt-60 2.98E-01 l.34E+OO l .SOE+Ol pCi/L u 3.00E+02 9/26/2017 7: 23 Zinc-65 -6.32E-02 2.SlE+OO 3.00E+Ol pCi/L u 3.00E+02 9/26/2017 7:23 Zi rconi um-95 2.07E+OO 2.SSE+OO l.SOE+Ol pCi/L u 4.00E+02 9/26/2017 7:23 lodin e-131 6.lOE-01 2.76E+OO N/A pCi/L u 4.00E+02 9/26/2017 7:23 Cesium-134 l.68E-01 l .37E+OO l.SOE+Ol pCi/L u 2.00E+Ol 9/26/2017 7:23 Cesium-137 l.53E-01 l .28E+OO l .80E+Ol pCi/L u 3.00E+Ol 9/26/2017 7:23 Barium-140 6.67E-01 6.84E+OO l .SOE+Ol pCi/L u 5.00E+Ol 9/26/2017 7:23 Lanthanum -140 - l.87E-01 2.23E+OO l .SOE+Ol pCi/L u 2.00E+02 12/26/2017 8:59 Tritium l .12E+02 4.26E+02 2.00E+03 pCi/L u 2.00E+04 12/26/2017 8:59 Manganese -54 -3.8SE-02 l .39E+OO l .SOE+Ol pCi/L u l .OOE+03 12/26/2017 8:59 lron -59 4.89E-02 3.17E+OO 3.00E+Ol pCi/L u 4.00E+02 12/26/2017 8:59 Cobalt-58 2.48E-02 l .45E+OO l.SOE+Ol pCi/L u l.OOE+03 12/26/2017 8:59 Cobalt-60 S.31E-01 l.SSE+OO l .SOE+Ol pCi/L u 3.00E+02 12/26/2017 8:59 Zinc-65 l.38E+OO 2.93E+OO 3.00E+Ol pCi/L u 3.00E+02 12/26/2017 8:59 Zirco nium -95 9.00E-01 2.62E+OO l .SOE+Ol pCi/L u 4.00E+02 12/26/2017 8:59 lodin e -131 -1.13E+OO 4.46E+OO N/A pCi/L u 4.00E+02 12/26/2017 8:59 Cesium-134 l .19E-01 l .SSE+OO l .SOE+Ol pCi/L u 2.00E+Ol 12/26/2017 8:59 Cesium -137 -8.34E-01 l.36E+OO l .80E+Ol pCi/L u 3.00E+Ol 12/26/2017 8:59 Barium-140 -4.87E+OO 9.49E+OO l .SOE+Ol pCi/L u S.OOE+Ol 12/26/2017 8:59 Lanthanum -140 2.81E-01 3.69E+OO l.SOE+Ol pCi/L u 2.00E+02 U - Target isotope was analyzed for but not detected above the MDC and LLD 72

GW-2 Col lect Date Parameter Result MDC LLD Units Qu alifie r Reportab le Le vels 3/28/2017 7:S7 Tritium -1.80E+Ol 6.26E+02 2.00E+03 pCi/L u 2.00E+04 3/ 28/2017 7:S7 Manganese-S4 6.21E-01 1.40E+OO 1.SOE+Ol pCi/L u l.OOE+03 3/28/ 2017 7:S7 lron -S9 -1.GGE-01 2.62E+OO 3.00E+Ol pCi/L u 4.00E+02 3/28/ 2017 7:S7 Cobalt-S8 -7.90E-01 1.17E+OO l .SOE+Ol pCi/L u l .OOE+03 3/28/2017 7:S7 Cobalt-GO 6.3SE-02 l.37E+OO l.SOE+Ol pCi/L u 3.00E+02 3/28/2017 7:S7 Zi nc-GS - 1.28E+OO 2.3SE+OO 3.00E+Ol pCi/L u 3.00E+02 3/28/2017 7:S7 Zi rconium-9S -S.64E-01 2.14E+OO l.SOE+Ol pCi/L u 4.00E+02 3/28/2017 7:S7 lodine- 131 1.30E+OO 2.62E+OO N/A pCi/L u 4.00E+02 3/28/2017 7:S7 Cesiu m -134 l .63E-01 l.31E+OO l.SOE+Ol pCi/L u 2.00E+Ol 3/28/2017 7:S7 Cesi um-137 -l.30E-01 l .24E+OO 1.80E+Ol pCi/L u 3.00E+Ol 3/28/ 2017 7:S7 Barium-140 -1.18E+OO 6.67E+OO l.SOE+Ol pCi/L u S.OOE+Ol 3/28/ 2017 7:S7 Lanthanum -140 -1.39E- 01 2.24E+OO l.SOE+Ol pCi/L u 2. 00E+02 6/27/ 2017 8:03 Tritium l .61E+02 S.73E+02 2.00E+03 pCi/L u 2.00E+04 6/27/ 2017 8:03 Manganese-S4 -2.GGE-01 l .12E+OO l .SOE+Ol pCi/L u l .OOE+03 6/27/2017 8:03 lron-S9 l .98E+OO 2.28E+OO 3.00E+Ol pCi/L u 4.00E+02 6/27/2017 8:03 Cobalt-S8 l .24E- 01 l .18E+OO l.SOE+Ol pCi/L u l .OOE+03 6/27/ 2017 8:03 Cobal t - GO 6.23E-03 1.14E+OO 1.SOE+Ol pCi/L u 3.00E+02 6/27/2017 8:03 Zinc-GS 8. 74E-01 2.SGE+OO 3.00E+Ol pCi/L u 3.00E+02 6/27/2017 8:03 Zirco nium-95 -1.24E+OO l.96E+OO l .SOE+Ol pCi/L u 4.00E+02 6/27/2017 8:03 lodine -131 -7.24E-02 l .70E+oo N/A pCi/L u 4.00E+02 6/27/2017 8:03 Cesi um-134 S.73E-01 1.3SE+OO l .SOE+Ol pCi/L u 2.00E+Ol 6/27/2017 8:03 Cesium-137 -4.SlE-01 l.2SE+OO 1.80E+Ol pCi/L u 3.00E+Ol 6/27/2017 8:03 Barium-140 2.64E-Ol S.16E+OO l.SOE+Ol pCi/L u S.OOE+Ol 6/27/2017 8:03 Lanthanum-140 -8. 71E-01 1.49E+OO 1.SOE+Ol pCi/L u 2.00E+02 9/26/2017 7:S2 Tritium 3.21E+02 S.04E+02 2.00E+03 pCi/L u 2.00E+04 9/26/2017 7:S2 Manganese-S4 l .46E+OO l.37E+OO l .SOE+Ol pCi/L UI 1.00E+o3 9/26/2017 7:S2 lron -S9 l .19E-01 3.0GE+OO 3.00E+Ol pCi/L u 4.00E+02 9/26/2017 7:S2 Cobalt-S8 -3.GOE-01 1.S4E+OO l. SOE+Ol pCi/L u 1.00E+03 9/26/2017 7:S2 Coba lt-60 6.32E-01 1.GSE+OO l .SOE+Ol pCi/L u 3.00E+02 9/26/2017 7:S2 Zi nc-6S -2.79E-01 3.03E+OO 3.00E+Ol pCi/L u 3.00E+02 9/26/2017 7:S2 Zirconium-9S -4.02E-01 2.71E+OO l .SOE+Ol pCi/L u 4.00E+02 9/26/2017 7:S2 lodine- 131 -6.61E-02 3.08E+OO N/A pCi/L u 4.00E+02 9/26/2017 7:S2 Cesium-134 - 1.GSE-01 l.S2E+OO l.SOE+Ol pCi/L u 2.00E+Ol 9/26/2017 7:S2 Cesium-137 7.7SE-01 l.72E+OO 1.80E+Ol pCi/L u 3.00E+Ol 9/26/2017 7:S2 Barium - 140 -6.41E-01 8.lOE+OO l .SOE+Ol pCi/L u S.OOE+Ol 9/26/2017 7:S2 Lanthanum-140 -1. S6E+OO 2.GSE+OO l .SOE+Ol pCi/L u 2.00E+02 12/26/2017 8:3S Tritium l .61E+02 4.3SE+02 2.00E+03 pCi/L u 2.00E+04 12/26/2017 8:3S Manganese- S4 2.21E-01 l .26E+OO l .SOE+Ol pCi/L u 1.00E+03 12/26/2017 8:3S lron- S9 8.74E-01 3.24E+OO 3.00E+Ol pCi/L u 4.00E+02 12/26/2017 8:3S Cobalt-S8 -6.46E- Ol l .09E+OO 1.SOE+Ol pCi/L u l.OOE+03 12/26/ 2017 8:3S Coba lt-60 6.73E-01 1.46E+OO l .SOE+Ol pCi/L u 3.00E+02 12/26/2017 8:3S Zi nc-GS 3.48E-01 2.48E+OO 3.00E+Ol pCi/L u 3.00E+02 12/ 26/2017 8:3S Zircon ium-9S -2.0GE-01 2.S3E+OO l.SOE+Ol pCi/L u 4.00E+02 12/26/ 2017 8:3S lodin e-131 -3.4SE-02 3.84E+OO N/A pCi/L u 4.00E+02 12/26/2017 8:3S Cesium-134 6.03E-01 l.42E+OO 1.SOE+Ol pCi/L u 2.00E+Ol 12/26/2017 8:3S Cesium-137 1.49E-01 l .22E+OO l .80E+Ql pCi/L u 3.00E+Ol 12/26/2017 8:3S Barium-140 2.77E+OO 9.03E+OO l .SOE+Ol pCi/L u S.OOE+Ol 12/26/2017 8:3S Lanthanum-140 -9.17E-01 2.64E+OO 1.SOE+Ol pCi/L u 2.00E+02 U - Target isotope was analyze d for but not detected above the MDC and LLD 73

GW-3 Collect Date Parameter Result MDC LLD Units Qualifier Reportable Levels 3/28/2017 9:55 Tritium l .25E+02 6.34E+02 2.00E+03 pCi/L u 2.00E+04 3/28/2017 9:55 Manganese-54 -l.25E-01 1.33E+OO l.SOE+Ol pCi/L u l .OOE+03 3/28/2017 9:55 lron-59 -1.38E+OO 2.66E+OO 3.00E+Ol pCi/L u 4.00E+02 3/28/2017 9:55 Cobalt-58 l .69E-01 l.42E+OO l.SOE+Ol pCi/L u l .OOE+03 3/28/2017 9:55 Cobalt- GO -4.45E-02 1.57E+OO l .SOE+Ol pCi/L u 3.00E+02 3/28/2017 9:55 Zinc-65 -1.2SE+OO 2.73E+OO 3.00E+Ol pCi/L u 3.00E+02 3/28/2017 9:55 Zirconium-95 2.82E-01 2.65E+OO 1.SOE+Ol pCi/L u 4.00E+02 3/28/2017 9:55 lodine-131 -9.04E-01 2.52E+OO N/A pCi/L u 4.00E+02 3/28/2017 9:55 Cesium-134 2.SGE-02 l .60E+OO l .SOE+Ol pCi/L u 2.00E+Ol 3/28/2017 9:55 Cesium - 137 - 2.83E-01 l .48E+OO l.80E+Ol pCi/L u 3.00E+Ol 3/28/2017 9 :55 Barium-140 9.54E-01 7.86E+OO l.SOE+Ol pCi/L u 5.00E+Ol 3/28/2017 9:55 Lanthanum - 140 -7.12E-01 2.SOE+OO l .SOE+Ol pCi/L u 2.00E+02 6/27/2017 9:07 Tritium 3.lSE+Ol 5.72E+02 2.00E+03 pCi/L u 2.00E+04 6/27/2017 9:07 Manganese-54 -2.78E+OO 1.19E+OO l .SOE+Ol pCi/L u l .OOE+03 6/27/2017 9:07 lron-59 -1.25E+OO 2.23E+OO 3.00E+Ol pCi/L u 4.00E+02 6/27/2017 9:07 Cobalt-58 3.llE-02 l .22E+OO l .SOE+Ol pCi/L u l.OOE+03 6/27/2017 9:07 Cobalt-GO - 3.83E-01 l.27E+OO l.SOE+Ol pCi/L u 3.00E+02 6/27/2017 9:07 Zinc-65 -8.31E-01 2.34E+OO 3.00E+Ol pCi/L u 3.00E+02 6/27/2017 9:07 Zirconium-95 -3.13E-01 2.0SE+OO l .SOE+Ol pCi/L u 4.00E+02 6/27/2017 9:07 lodine-131 5.76E-01 l .69E+OO N/A pCi/L u 4.00E+02 6/27/2017 9:07 Cesium-134 9.94E-03 1.42E+OO l .SOE+Ol pCi/L u 2.00E+Ol 6/27/2017 9:07 Cesium - 137 4.63E-02 l.37E+OO l.80E+Ol pCi/L u 3.00E+Ol 6/27/2017 9:07 Barium-140 - 5.00E+OO 4.98E+OO l .SOE+Ol pCi/L u 5.00E+Ol 6/27/2017 9:07 Lanthanum-140 -8.53E-01 l .59E+OO l.SOE+Ol pCi/L u 2.00E+02 9/26/2017 9:08 Tritium l.95E+02 5.17E+02 2.00E+03 pCi/L u 2.00E+04 9/26/2017 9:08 Manganese-54 -8.20E-01 l .22E+OO l .SOE+Ol pCi/L u l .OOE+03 9/26/2017 9:08 lron-59 -2.67E-01 2.61E+OO 3.00E+Ol pCi/L u 4.00E+02 9/26/2017 9:08 Cobalt-58 -3.71E-01 1.33E+OO l.SOE+Ol pCi/L u l.OOE+03 9/26/2017 9:08 Cobalt-GO 2.35E-01 l.49E+OO l .SOE+Ol pCi/L u 3.00E+02 9/26/2017 9:08 Zi nc- 65 -9.99E-01 2.63E+OO 3.00E+Ol pCi/L u 3.00E+02 9/26/2017 9:08 Zirconium -95 -8.69E-01 2.09E+OO l .SOE+Ol pCi/L u 4.00E+02 9/26/2017 9:08 lodine -131 -8.43E-01 2.SSE+OO N/A pCi/L u 4.00E+02 9/26/2017 9:08 Cesium -134 - 2.97E-02 l.39E+OO 1.SOE+Ol pCi/L u 2.00E+Ol 9/26/2017 9:08 Cesium-137 9.83E-01 1.45E+OO l .80E+Ol pCi/L u 3.00E+Ol 9/26/2017 9:08 Barium-140 l .71E+OO 7.lOE+OO l.SOE+Ol pCi/L u 5.00E+Ol 9/26/2017 9:08 Lanthanum-140 4.78E-01 2.46E+OO l. SOE+Ol pCi/L u 2.00E+02 12/26/201710:00 Tritium 8.93E+Ol 4.27E+02 2.00E+03 pCi/L u 2.00E+04 12/26/201710:00 Manganese-54 6.68E-01 2.09E+OO 1.SOE+Ol pCi/L u l.OOE+03 12/26/2017 10:00 lron-59 -2.27E+OO 4.70E+OO 3.00E+Ol pCi/L u 4.00E+02 12/26/201710:00 Cobalt-58 -4.86E-03 2.24E+OO 1.SOE+Ol pCi/L u 1.00E+03 12/26/201710:00 Cobalt-GO 7.75E-01 2.36E+OO l .SOE+Ol pCi/L u 3.00E+02 12/26/201710:00 Zinc-65 l .llE+OO 4.23E+OO 3.00E+Ol pCi/L u 3.00E+02 12/26/201710:00 Zirconium-95 6.00E-01 4.lSE+OO l .SOE+Ol pCi/L u 4.00E+02 12/26/201710:00 lodine-131 l .74E+OO 6.23E+OO N/A pCi/L u 4.00E+02 12/26/2017 10:00 Cesium-134 4.84E-01 2.31E+OO l.SOE+Ol pCi/L u 2.00E+Ol 12/26/2017 10:00 Cesium-137 2.40E-01 2.04E+OO l.80E+Ol pCi/L u 3.00E+Ol 12/26/2017 10:00 Barium-140 2.72E+OO l .48E+Ol l.SOE+Ol pCi/L u 5.00E+Ol 12/26/201710:00 Lanthanum-140 -8.04E-01 5.34E+OO l .SOE+Ol pCi/L u 2.00E+02 U - Target isotope was analyzed for but not detected above the MDC and LLD 74

GW-4 Collect Date Parameter Result MDC LLD Units Qual ifier Reportable Levels 3/28/2017 12:29 Tritium l .78E+02 6.35E+02 2.00E+Q3 pCi/L u 2.00E+04 3/28/2017 12:29 Manganese-54 2.68E-01 l .15E+OO l.50E+Ql pCi/L u 1.00E+03 3/28/201712:29 lron-59 6.59E-01 2.36E+OO 3.00E+ol pCi/L u 4.00E+02 3/28/201712:29 Cobalt-58 -9.51E-02 l.15E+OO l .50E+Ql pCi/L u l .OOE+03 3/28/201712:29 Cobalt-60 8.27E-01 l .26E+OO l.50E+Ql pCi/L u 3.00E+02 3/28/2017 12:29 Zinc-65 l .20E+OO 2.47E+OO 3.00E+ol pCi/L u 3.00E+02 3/28/201712:29 Zirconium-95 l .54E+OO 2.02E+OO l.50E+Ol pCi/L u 4.00E+02 3/28/201712:29 lodine-131 -3.72E-01 2.12E+OO N/A pCi/L u 4.00E+02 3/28/201712:29 Cesium-134 3.79E-01 1.30E+OO l .50E+Ql pCi/L u 2.00E+Ol 3/28/201712:29 Cesium-137 3.71E-01 l.20E+OO l.80E+Ql pCi/L u 3.00E+Ol 3/28/201712:29 Barium-140 l .22E+OO 6.06E+OO l.50E+Ql pCi/L u 5.00E+Ol 3/28/2017 12:29 Lanthanum-140 6.28E-01 2.06E+OO l .50E+Ol pCi/L u 2.00E+02 6/27/201710:52 Tritium -1.78E+02 5.76E+02 2.00E+03 pCi/L u 2.00E+04 6/27/201710:52 Manganese-54 -4.23E-02 l.04E+OO l .50E+Ql pCi/L u l .OOE+03 6/27/201710:52 lron -59 5.13E-01 2.43E+OO 3.00E+ol pCi/L u 4.00E+02 6/27/201710:52 Cobalt-58 -l .02E-01 l.08E+OO l .50E+Ql pCi/L u l .OOE+03 6/27/201710:52 Cobalt-60 2.72E-01 l.26E+OO l .50E+Ol pCi/L u 3.00E+02 6/27/201710:52 Zinc-65 1.22E-01 2.43E+OO 3.00E+ol pCi/L u 3.00E+02 6/27/201710:52 Zirconium-95 -4.42E-02 l .86E+OO l .50E+Ql pCi/L u 4.00E+02 6/27/201710:52 lodine-131 -8.53E-03 l.55E+OO N/A pCi/L u 4.00E+02 6/27/201710:52 Cesium-134 -6.09E-02 l.23E+OO l .50E+Ol pCi/L u 2.00E+Ol 6/27/201710:52 Cesium-137 7.54E-01 l .26E+OO l .80E+Ql pCi/L u 3.00E+Ol 6/27/201710:52 Barium-140 2.27E+OO 5.21E+OO 1.50E+Ol pCi/L u 5.00E+Ol 6/27/201710:52 Lanthanum-140 -1.55E-01 l .73E+OO l .50E+Ql pCi/L u 2.00E+02 9/26/2017 11:35 Tritium 3.22E+02 5.06E+02 2.00E+Q3 pCi/L u 2.00E+04 9/26/2017 11:35 Manganese-54 -5.02E-01 l .14E+OO l .50E+Ql pCi/L u l .OOE+03 9/26/2017 11:35 lron-59 -l .63E+OO 2.84E+OO 3.00E+Ql pCi/L u 4.00E+02 9/26/2017 11:35 Cobalt-58 -4.0lE-01 l .33E+OO l .50E+Ql pCi/L u 1.00E+03 9/26/201711:35 Cobalt-60 l .57E-01 l .43E+OO l .50E+Ql pCi/L u 3.00E+02 9/26/201711:35 Zinc-65 3.29E-01 2.69E+OO 3.00E+ol pCi/L u 3.00E+02 9/26/201711:35 Zirconium-95 3.07E-01 2.43E+OO l .50E+Ql pCi/L u 4.00E+02 9/26/201711:35 lodine-131 -l.25E-01 2.80E+OO N/A pCi/L u 4.00E+02 9/26/201711:35 Cesium-134 3.74E-01 l.40E+OO l.50E+Ol pCi/L u 2.00E+Ol 9/26/201711:35 Cesium-137 -3. 78E-01 l .31E+OO l .80E+Ql pCi/L u 3.00E+Ol 9/26/2017 11:35 Barium-140 6.42E+OO 7.77E+OO l .50E+Ql pCi/L u 5.00E+Ol 9/26/201711:35 Lanthanum-140 2.44E+OO 2.77E+OO l .50E+Ql pCi/L u 2.00E+02 12/26/201711:40 Tritium 8.98E+Ol 4.29E+02 2.00E+03 pCi/L u 2.00E+04 12/26/201711:40 Manganese -54 4.53E-01 l .69E+OO l.50E+ol pCi/L u 1.00E+03 12/26/201711:40 lron-59 6.23E-01 3.98E+OO 3.00E+Ql pCi/L u 4.00E+02 12/26/201711:40 Cobalt-58 l .48E+OO l .83E+OO l .50E+Ql pCi/L u l.OOE+03 12/26/2017 11:40 Cobalt-60 5.63E-01 1.79E+OO l .50E+Ql pCi/L u 3.00E+02 12/26/2017 11:40 Zinc-65 -2.33E+OO 3.16E+OO 3.00E+Ql pCi/L u 3.00E+02 12/26/2017 11:40 Zirconium-95 -2.69E-01 2.96E+OO 1.50E+Ql pCi/L u 4.00E+02 12/26/2017 11:40 lodine-131 -1.63E+OO 4.74E+OO N/A pCi/L u 4.00E+02 12/26/2017 11:40 Cesium-134 3.lOE-01 l.88E+OO l.50E+Ql pCi/L u 2.00E+Ol 12/26/201711:40 Cesium-137 4.62E-01 l.78E+OO l.80E+Ql pCi/L u 3.00E+Ol 12/26/201711:40 Barium-140 l .53E+OO l.15E+Ol l.50E+ol pCi/L u 5.00E+Ol 12/26/201711:40 Lanthanum-140 -6.36E-01 3.15E+OO l.50E+Ql pCi/L u 2.00E+02 U - Target isotope was analyzed for but not detected above the MDC and LLD 75

GW-5 Collect Date Parameter Result MDC LLD Units Qualifier Reportable Levels 3/28/201710:39 Tritium -5.18E+Ol 6.36E+02 2.00E+03 pCi/L u 2.00E+04 3/28/201710:39 Manganese-54 9.86E-02 l .57E+OO l .SOE+Ol pCi/L u l.OOE+03 3/28/201710:39 lron-59 l .68E-02 3.21E+OO 3.00E+01 pCi/L u 4.00E+02 3/28/201710:39 Cobalt-58 -1.SOE-01 l.54E+OO l .SOE+Ol pCi/L u l .OOE+03 3/28/201710:39 Cobalt-60 -1.57E-01 l .61E+OO l .SOE+Ol pCi/L u 3.00E+02 3/28/2017 10:39 Zinc-65 l .37E+OO 3.38E+OO 3.00E+Ol pCi/L u 3.00E+02 3/28/201710:39 Zircon i u m-95 -5.0SE-01 2.80E+OO l .SOE+Ol pCi/L u 4.00E+02 3/28/201710:39 lodine- 131 3.70E-01 2.94E+OO N/A pCi/L u 4.00E+02 3/28/201710:39 Cesium-134 7.88E-01 1.86E+OO l.SOE+Ol pCi/L u 2.00E+Ol 3/28/201710:39 Cesium-137 2.56E-01 l .69E+OO l.80E+Ol pCi/L u 3.00E+Ol 3/28/201710:39 Barium-140 l .54E+OO 8.38E+OO l.SOE+Ol pCi/L u 5.00E+Ol 3/28/201710:39 Lanthanum-140 -9.46E-02 2.54E+OO l .SOE+Ol pCi/L u 2. 00E+02 6/27/201710:07 Tritium 1.15E+02 5.75E+02 2.00E+03 pCi/L u 2.00E+04 6/27/201710:07 Manganese -54 6.84E-02 l .44E+OO l.SOE+Ol pCi/L u l.OOE+03 6/27/201710:07 lron- 59 -9.47E-01 2.59E+OO 3.00E+Ol pCi/L u 4.00E+02 6/27/201710:07 Cobalt-58 -l.20E+OO l .18E+OO l .SOE+Ol pCi/L u l.OOE+03 6/27/201710:07 Cobalt-60 -7.91E-02 1.40E+OO 1.SOE+Ol pCi/L u 3.00E+02 6/27/201710:07 Zinc- 65 l.17E+OO 2.74E+OO 3.00E+Ol pCi/L u 3.00E+02 6/27/201710:07 Zirconium-95 l .82E+OO 2.56E+OO 1.SOE+Ol pCi/L u 4.00E+02 6/27/201710:07 lodine -131 7.00E-02 l .90E+OO N/A pCi/L u 4.00E+02 6/27/201710:07 Cesium -134 2.52E-01 l.49E+OO l.SOE+Ol pCi/L u 2.00E+Ol 6/27/201710:07 Cesium-137 l.OOE- 01 l.48E+OO l.80E+Ol pCi/L u 3.00E+Ol 6/27/201710:07 Barium-140 9.22E-01 6.04E+OO l .SOE+Ol pCi/L u 5.00E+Ol 6/27/201710:07 Lanthanum -140 -4.84E-01 l .75E+OO l.SOE+Ol pCi/L u 2.00E+02 9/26/201710:09 Tritium 8.22E+Ol 4.92E+02 2.00E+03 pCi/L u 2.00E+04 9/26/201710:09 Manganese-54 - 2.SlE-01 l.28E+OO l .SOE+Ol pCi/L u l .OOE+03 9/26/201710:09 lron-59 -4.07E-01 2.35E+OO 3.00E+Ol pCi/L u 4.00E+Q2 9/26/201710:09 Cobalt- 58 -l.83E-01 l .20E+OO l.SOE+Ol pCi/L u 1.00E+03 9/26/201710:09 Cobalt-60 3.29E-01 1.34E+OO l.SOE+Ol pCi/L u 3.00E+02 9/26/201710:09 Zinc- 65 l .99E-01 2.74E+OO 3.00E+Ol pCi/L u 3.00E+02 9/26/201710:09 Zirconium -95 -5.SOE-01 2.29E+OO l .SOE+Ol pCi/L u 4.00E+02 9/26/201710:09 lodine- 131 -7.86E-01 2.59E+OO N/A pCi/L u 4.00E+02 9/26/201710:09 Cesium -134 l.36E+OO 1.46E+OO l.SOE+Ol pCi/L u 2.00E+Ol 9/26/201710:09 Cesium -137 -4.44E-01 l.3SE+OO l.80E+Ol pCi/L u 3.00E+Ol 9/26/201710:09 Barium- 140 -2.33E+OO 6.95E+OO l .SOE+Ol pCi/L u 5.00E+Ol 9/26/2017 10:09 Lanthanum-140 -1.39E+OO 2.llE+OO 1.SOE+Ol pCi/L u 2.00E+02 12/26/201710:40 Tritium 2.10E+02 4.39E+02 2.00E+Q3 pCi/L u 2.00E+04 12/26/201710:40 Manganese- 54 -2.85E-01 1.41E+OO l .SOE+Ol pCi/L u l .OOE+03 12/26/201710:40 lron- 59 4.62E-01 3.83E+OO 3.00E+Ol pCi/L u 4.00E+02 12/26/201710:40 Cobalt-58 -2.68E-01 1.45E+OO l.SOE+Ol pCi/L u l .OOE+03 12/26/201710:40 Cobalt- 60 -7.SlE-02 l.54E+OO l .SOE+Ol pCi/L u 3.00E+02 12/26/2017 10:40 Zinc-65 -8.68E-01 3.06E+OO 3.00E+Ol pCi/L u 3.00E+02 12/26/201710:40 Zirconium -95 -5.56E-01 2.71E+OO l.SOE+Ol pCi/L u 4.00E+02 12/26/201710:40 lodine-131 -2.66E-02 4.65E+OO N/A pCi/L u 4.00E+02 12/26/201710:40 Cesium-134 -l .25E+OO l.SOE+OO l.SOE+01 pCi/L u 2.00E+Ol 12/26/201710:40 Cesium-137 l .63E-01 l.56E+OO l.80E+Ol pCi/L u 3.00E+Ol 12/26/201710:40 Barium-140 2.68E+OO l .01E+01 l .SOE+Ol pCi/L u 5.00E+Ol 12/26/201710:40 Lanthanum-140 -1.13E+OO 3.82E+OO l.SOE+Ol pCi/L u 2.00E+02 U - Target isotope was analyzed for but not detected above the MDC and LLD 76

G. Sediment Program Table 1 - Comanche Peak Nuclear Power Plant Radiological Environmental Monitoring Program specifies shoreline sediments were collected at four different monitoring locations. One sample location is along the shore of Squaw Creek Reservoir, one sample location is on Squaw Creek downstream of the dam discharge and two locations are along Lake Granbury's shores. Each sample is collected on a six-month frequency and sent to the contract laboratory for analysis by gamma spectrometry.

The process of shoreline sedimentation is a complex evolution whereby potential radionuclides and stable elements may concentrate in the bottom sediment of particular bodies of water. The concentrations are effected by such things as colloidal particles combining with chelating agents and biological action of bacteria and other benthic organisms. Monitoring of the area shorelines provides one of the first and best indicators of radionuclide deposition.

Results from the gamma isotopic analysis of shoreline sediments is reported in Table 10 - Environmental Sediment Gamma Isotopic Results.

As expected and in agreement with previous results from both the pre-operational and operational programs, naturally occurring Potassium-40 was detected in all eight samples and Beryillum-7 was detected in one samples. All required radionuclide results were reported as less than the required LLDs. During previous years, both pre-operational and operational, positive indications occasionally had been noted for Cesium-137 and during 2017 there were no positive Cesium-137 results reported.

As expected, there were no results in any sediment sample that indicated any direct influence from CPNPP discharges to the local environment.

During the year 2017, there were no exceptions to the Sediment Program.

77

Table 10 -- Environmental Sediment Gamma Isotopic Results (Units of pCi/kg)

Sample Data for: "SS-1" Collect Date Parameter Result MDC LLD Units Qualifier 2/28/2017 9:45 Beryllium-7 3.36E+Ol 2.83E+02 N/A pCi/kg u 2/28/2017 9:45 Potassi um-40 9.23E+03 2.21E+02 N/A pCi/kg 2/28/2017 9:45 Manganese-54 2.01E+Ol 4.17E+Ol N/A pCi/kg u 2/28/2017 9:45 lron-59 -l .96E+Ol 4.20E+Ol N/A pCi/kg u 2/28/2017 9:45 Cobalt-58 -3.49E+OO 3.39E+Ol N/A pCi/kg u 2/28/2017 9:45 Cobalt-60 2.19E-01 3.33E+01 N/A pCi/kg u 2/28/2017 9:45 Zinc-65 -9.66E+OO 7.13E+Ol N/A pCi/kg u 2/28/2017 9:45 Zirconium-95 7.87E+OO 6.27E+01 N/A pCi/kg u 2/28/2017 9:45 Niobium-95 2.47E+Ol 3.81E+Ol N/A pCi/kg u 2/28/2017 9:45 lodine-131 l.21E+Ol 4.18E+Ol N/A pCi/kg u 2/28/2017 9:45 Cesium-134 1.38E+Ol 4.67E+Ol l.50E+02 pCi/kg u 2/28/2017 9:45 Ce sium-137 3.30E+Ol 3.41E+Ol l.80E+02 pCi/kg u 2/28/2017 9:45 Barium - 140 l.53E+Ol l.49E+02 N/A pCi/kg u 2/28/2017 9:45 Lanthanum-140 l.09E+Ol 4.25E+Ol N/A pCi/kg u 7/11/2017 9:20 Beryllium-7 4.66E+02 3.42E+02 N/A pCi/kg 7/11/2017 9:20 Potassium-40 6.50E+03 3.09E+02 N/A pCi/kg 7/11/2017 9:20 Manganese-54 2.03E+Ol 3.02E+Ol N/A pCi/kg u 7/11/2017 9:20 lron-59 l.75E+Ol 9.14E+Ol N/A pCi/kg u 7/11/2017 9:20 Cobalt-58 -6.47E+OO 3.24E+Ol N/A pCi/kg u 7/11/2017 9:20 Cobalt-60 -4.67E+OO 4.47E+Ol N/A pCi/kg u 7/11/2017 9:20 Zinc-65 -2.71E+Ol 9.22E+Ol N/A pCi/kg u 7/11/2017 9:20 Zirconium -95 - 2.31E+01 6.60E+01 N/A pCi/kg u 7/11/2017 9:20 Niobium-95 2.86E+OO 4.29E+Ol N/A pCi/kg u 7/11/2017 9:20 lodine-131 1.85E+Ol 6.11E+01 N/A pCi/kg u 7/11/2017 9:20 Cesium-134 l.39E+01 4.44E+Ol l.50E+02 pCi/kg u 7/11/2017 9:20 Cesium-137 -l.41E+Ol 4.45E+Ol l.80E+02 pCi/kg u 7/11/2017 9:20 Barium-140 -1.10E+02 l.17E+02 N/A pCi/kg u 7/11/2017 9:20 Lanthanum-140 l.OlE+Ol 4.84E+Ol N/A pCi/kg u U - Target isotope was analyzed for but not detected above the MDC and LLD 78

Sample Data for: "SS-2" Collect Date Parameter Result MDC LLD Units Qualifier 2/28/201711:35 Beryllium-7 2.24E+02 3.05E+02 N/A pCi/kg u 2/28/2017 11:35 Potassium -40 2.02E+03 l.92E+02 N/A pCi/kg 2/28/2017 11:35 Manganese-54 -1.40E+OO l .84E+Ol N/A pCi/kg u 2/28/201711:35 lron-59 l .67E+Ol 5.82E+01 N/A pCi/kg u 2/28/201711:35 Cobalt-58 -1.25E+OO 2.27E+Ol N/A pCi/kg u 2/28/201711:35 Cobalt-60 -8.84E+OO 3.39E+Ol N/A pCi/kg u 2/28/2017 11:35 Zinc-65 l.87E+Ol 6.13E+01 N/A pCi/kg u 2/28/2017 11:35 Zirconium -95 8.82E+OO 4.77E+Ol N/A pCi/kg u 2/28/2017 11:35 Niobium-95 -7.75E+OO 2.86E+Ol N/A pCi/kg u 2/28/2017 11:35 lodine-131 3.00E+Ol 2.47E+Ol N/A pCi/kg UI 2/28/2017 11:35 Cesium-134 -7.02E+OO 2.77E+01 l .50E+o2 pCi/kg u 2/28/2017 11:35 Cesium-137 6.72E+OO 2.86E+Ol l.80E+o2 pCi/kg u 2/28/2017 11:35 Barium-140 -5.05E+OO 8.21E+Ol N/A pCi/kg u 2/28/201711:35 Lanthanum - 140 -8.07E+OO 2.09E+Ol N/A pCi/kg u 7/11/2017 9:50 Beryllium -7 2.86E+02 l .94E+02 N/A pCi/kg UI 7/11/2017 9:50 Potassi u m-40 2.09E+03 2.31E+02 N/A pCi/kg 7/11/2017 9:50 Manganese -54 8.45E+OO 2.56E+01 N/A pCi/kg u 7/11/2017 9:50 lron-59 -2.24E+Ol 5.18E+Ol N/A pCi/kg u 7/11/2017 9:50 Cobalt-58 6.60E+OO 2.81E+01 N/A pCi/kg u 7/11/2017 9:50 Cobalt-60 -5.79E-01 2.57E+Ol N/A pCi/kg u 7/11/2017 9:50 Zinc-65 -1.05E+Ol 3.99E+Ol N/A pCi/kg u 7/11/2017 9:50 Zirconium -95 8.14E+OO 4.22E+Ol N/A pCi/kg u 7/11/2017 9:50 Niobium-95 8.70E-01 2.60E+Ol N/A pCi/kg u 7/11/2017 9:50 lodine-131 -9.86E+OO 3.34E+Ol N/A pCi/kg u 7/11/2017 9:50 Cesium-134 -5.31E+OO 2.57E+Ol l.50E+02 pCi/kg u 7/11/2017 9:50 Cesium-137 4.08E+Ol 2.74E+Ol l.80E+02 pCi/kg UI 7/11/2017 9:50 Barium-140 5.13E+01 l.29E+02 N/A pCi/kg u 7/11/2017 9:50 Lanthanum-140 - l.83E+01 3.39E+01 N/A pCi/kg u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification fo r gamma spectroscopy 79

Sample Data for: "SS-3" Collect Date Parameter Result MDC LLD Units Qualifier 2/28/201710:12 Beryllium-7 l .79E+02 2.90E+02 N/A pCi/kg u 2/28/201710:12 Potassium-40 l .OOE+04 l.85E+02 N/A pCi/kg 2/28/201710:12 Manganese-54 8.84E+OO 3.16E+Ol N/A pCi/kg u 2/28/201710:12 lron-59 -2.30E+OO 5.71E+Ol N/A pCi/kg u 2/28/2017 10: 12 Cobalt-58 l.53E+01 2.35E+Ol N/A pCi/kg u 2/28/201710:12 Cobalt-60 6.44E+OO 3.41E+Ol N/A pCi/kg u 2/28/201710:12 Zinc- 65 -l.83E+Ol 7.04E+Ol N/A pCi/kg u 2/28/201710:12 Zirconium -95 6.82E+OO 4.98E+Ol N/A pCi/kg u 2/28/201710:12 Niobium-95 -9.83E+OO 2.92E+Ol N/A pCi/kg u 2/28/201710:12 lodine - 131 l .13E+Ol 3.29E+01 N/A pCi/kg u 2/28/201710:12 Cesium-134 4.93E+Ol 3.90E+Ol l.SOE+02 pCi/kg UI 2/28/201710:12 Cesium-137 5.85E+OO 3.32E+01 l.80E+o2 pCi/kg u 2/28/2017 10:12 Barium - 140 3.0lE+OO l .29E+02 N/A pCi/kg u 2/28/201710:12 Lanthanum-140 -l.06E+01 3.20E+Ol N/A pCi/kg u 7/11/2017 9:35 Beryllium-7 l.72E+02 2.74E+02 N/A pCi/kg u 7/11/2017 9:35 Potassium-40 2.07E+03 2.52E+02 N/A pCi/kg 7/11/2017 9:35 Manganese-54 l.38E+Ol 2.93E+01 N/A pCi/kg u 7/11/2017 9:35 lron-59 l.34E+Ol 4.80E+Ol N/A pCi/kg u 7/11/2017 9:35 Cobalt-58 3.14E+OO 2.33E+Ol N/A pCi/kg u 7/11/2017 9:35 Cobalt-60 -6.53E-01 2.14E+Ol N/A pCi/kg u 7/11/2017 9:35 Zinc- 65 -6.42E+OO 5.57E+Ol N/A pCi/kg u 7/11/2017 9:35 Zirconium-95 l.lOE+Ol 5.0lE+Ol N/A pCi/kg u 7/11/2017 9:35 Niobium-95 8.53E-01 2.87E+Ol N/A pCi/kg u 7/11/2017 9:35 lodine-131 3.57E+OO 3.71E+Ol N/A pCi/kg u 7/11/2017 9:35 Cesium-134 3.46E+OO 2.96E+Ol l.SOE+o2 pCi/kg u 7/11/2017 9:35 Cesium -137 -7.17E+OO 2.81E+Ol 1.80E+o2 pCi/kg u 7/11/2017 9:35 Barium-140 9.34E+OO l .14E+02 N/A pCi/kg u 7/11/2017 9:35 Lanthanum-140 -5.41E+OO 4.08E+Ol N/A pCi/kg u U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy 80

Sample Data for: "SS-4" Collect Date Parameter Result MDC LLD Units Qualifier 2/28/2017 8:38 Beryllium-7 l.llE+Ol 3.73E+02 N/A pCi/kg u 2/28/2017 8:38 Potassium -40 6.57E+03 3.75E+02 N/A pCi/kg 2/28/2017 8:38 Manganese-54 7.94E+OO 4.90E+Ol N/A pCi/kg u 2/28/2017 8:38 lron-59 2.74E+OO 8.07E+01 N/A pCi/kg u 2/28/2017 8:38 Cobalt-58 l.39E+Ol 4.67E+01 N/A pCi/kg u 2/28/2017 8:38 Cobalt-60 6.98E+OO 4.33E+Ol N/A pCi/kg u 2/28/2017 8:38 Zinc-65 2.70E+Ol 9.92E+01 N/A pCi/kg u 2/28/2017 8:38 Zirconium-95 l .38E+Ol 8.95E+Ol N/A pCi/kg u 2/28/2017 8:38 Niobium-95 -l.74E+Ol 4.54E+Ol N/A pCi/kg u 2/28/2017 8:38 lodine- 131 -3.44E+01 1.14E+02 N/A pCi/kg u 2/28/2017 8:38 Cesi um-134 2.54E+Ol 6.13E+Ol l.SOE+02 pCi/kg u 2/28/2017 8:38 Cesium-137 l.34E+01 5.lOE+Ol l.80E+02 pCi/kg u 2/28/2017 8:38 Barium-140 2.93E+01 3.31E+02 N/A pCi/kg u 2/28/2017 8:38 Lanthanum - 140 -3.03E+Ol 9.45E+Ol N/A pCi/kg u 7/11/2017 8:45 Beryllium-7 2.48E+02 3.84E+02 N/A pCi/kg u 7/11/2017 8:45 Potassium -40 6.13E+03 2.22E+02 N/A pCi/kg 7/11/2017 8:45 Manganese-54 7.78E+OO 4.28E+01 N/A pCi/kg u 7/11/2017 8:45 lron-59 -2.llE+Ol l .OSE+02 N/A pCi/kg u 7/11/2017 8:45 Cobalt-58 -l.63E+Ol 2.93E+Ol N/A pCi/kg u 7/11/2017 8:45 Cobalt-60 -3.07E+OO 4.14E+Ol N/A pCi/kg u 7/11/2017 8:45 Zinc-65 9.21E+OO l .01E+02 N/A pCi/kg u 7/11/2017 8:45 Zirconium-95 8.08E+OO 7.26E+Ol N/A pCi/kg u 7/11/2017 8:45 Niobium-95 -l.31E+Ol 4.09E+Ol N/A pCi/kg u 7/11/2017 8:45 lodine-131 2.33E+01 l.06E+02 N/A pCi/kg u 7/11/2017 8:45 Cesium-134 4.00E+Ol 5.61E+01 l.SOE+02 pCi/kg u 7/11/2017 8:45 Cesium-137 8.43E+OO 4.30E+01 l.80E+02 pCi/kg u 7/11/2017 8:45 Barium -140 6.53E+OO 2.23E+02 N/A pCi/kg u 7/11/2017 8:45 Lanthanum - 140 -5.14E+01 7.64E+Ol N/A pCi/kg u U - Target isotope was analyzed for but not detected above the MDC and LLD 81

H. Fish Program Fish samples were collected at two locations. One monitoring location is an area approximately two miles east-northeast of the site on Squaw Creek Reservoir. The second location is on Lake Granbury approximately eight miles north-northeast of the site. Fish sampling is scheduled for the months of April and November. The collected fish are frozen and shipped to the independent laboratory where the edible portions are analyzed for gamma emitting radio-nuclides. Annually, tritium analysis is performed on Squaw Creek fish (CR-2014-013335).

The results of the analysis performed on the collected fish samples are reported in Table 11 -- Environmental Fish Gamma Isotopic Results. Catfish and Bass samples were analyzed as indicated in the table. There were no positive results reported except for the expected Potassium-40, which is naturally occurring in all living organisms. All required radionuclide results were reported as less than the required LLDs. As a result of the fish-sampling program, there were no anomalies noted and no indication of any influence on the surrounding environment from Comanche Peak plant discharges.

No abnormal results were reported by CPNPP or by the State of Texas. As expected, Potassium-40 was the only positive isotope found.

During the year 2017 there were one exceptions to the Fish Program.

TR-2017-007372 The analysis of the (cooked) fish sample collected on 5/9/17 from Squaw Creek indicates a positive Tritium analysis result consistent with previous years. This is not an ODCM required sample/analysis, and there is NO reporting level.

82

Table 11 -- Environmental Fish Gamma Isotopic Results (Units of pCi/kg wet)

Sample Data for: "F-1" U - Target isotope was analyzed for but not detected above the MDC and LLD Ul - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qualifier Type 5/9/2017 12:00 Potassium-40 3.40E+OO 8.21E-02 N/A pCi/g Catfish 5/9/2017 12:00 Manganese-54 -3.38E-04 1.13E-02 1.30E+02 pCi/g u Catfish 5/9/2017 12:00 lron-59 1.35E-02 2.91E-02 2.60E+02 pCi/g u Catfish 5/9/2017 12 :00 Cobalt-58 -7.30E-04 1.21E-02 1.30E+02 pCi/g u Catfish 5/9/2017 12:00 Cobalt-60 9.41E-04 1.16E-02 1.30E+02 pCi/g u Catfish 5/9/2017 12:00 Zinc-65 -1.42E-02 2.75E-02 2.60E+02 pCi/g u Catfish 5/9/2017 12:00 Zirconium-95 -4.02E-03 1.74E-02 N/A pCi/g u Catfish 5/9/2017 12:00 Niobium-95 1.28E-02 1.0lE-02 N/A pCi/g UI Catfish 5/9/2017 12:00 lodine-131 3.lOE-03 2.16E-02 N/A pCi/g u Catfish 5/9/2017 12:00 Cesium-134 4.00E-03 1.28E-02 1.30E+02 pCi/g u Catfish 5/9/2017 12:00 Cesium-137 -2.78E-03 1.17E-02 1.50E+02 pCi/g u Catfish 5/9/2017 12:00 Barium-140 8.17E-03 5.55E-02 N/A pCi/g u Catfish 5/9/2017 12:00 Lanthanum-140 -5.02E-03 1.40E-02 N/A pCi/g u Catfish 5/9/2017 12:00 Potassium-40 3.57E+OO 5.96E-02 N/A pCi/g Bass 5/9/2017 12:00 Manganese-54 4.72E-04 1.05E-02 1.30E+02 pCi/g u Bass 5/9/2017 12 :00 lron-59 -8.36E-04 1.81E-02 2.60E+02 pCi/g u Bass 5/9/2017 12:00 Cobalt-58 -4.13E-03 9 .61E-03 1.30E+02 pCi/g u Bass 5/9/2017 12:00 Cobalt-60 -1.36E-03 1.0lE-02 1.30E+02 pCi/g u Bass 5/9/2017 12:00 Zinc-65 1.84E-03 1.92E-02 2.60E+02 pCi/g u Bass 5/9/2017 12:00 Zirconium-95 -8.28E-03 1.78E-02 N/A pCi/g u Bass 5/9/2017 12:00 Niobium-95 -1.79E-03 1.00E-02 N/A pCi/g u Bass 5/9/2017 12:00 lodine-131 2.39E-03 2.lOE-02 N/A pCi/g u Bass 5/9/2017 12:00 Cesium-134 -2.05E-03 9.47E-03 1.30E+02 pCi/g u Bass 5/9/2017 12:00 Cesium-137 -3.61E-03 9.llE-03 1.50E+02 pCi/g u Bass 5/9/2017 12:00 Barium-140 4.90E-03 5.llE-02 N/A pCi/g u Bass 5/9/2017 12:00 Lanthanum-140 4.41E-03 1.37E-02 N/A pCi/g u Bass 11/21/2017 12:00 Potassium-40 3.11E+OO 1.09E-01 N/A pCi/g Catfish 11/21/2017 12:00 Manganese-54 -2.14E-03 1.04E-02 1.30E+02 pCi/g u Catfish 11/21/2017 12:00 lron-59 -2.41E-03 3.31E-02 2.60E+02 pCi/g u Catfish 11/21/2017 12:00 Cobalt-58 2.68E-03 1.20E-02 1.30E+02 pCi/g u Catfish 11/21/2017 12:00 Cobalt-60 -9.45E-04 1.40E-02 1.30E+02 pCi/g u Catfish 11/21/2017 12:00 Zinc-65 -1.66E-04 3.21E-02 2.60E+02 pCi/g u Catfish 11/21/2017 12:00 Zirconium-95 6.05E-03 2.36E-02 N/A pCi/g u Catfish 11/21/2017 12:00 Niobium-95 -1.09E-03 1.31E-02 N/A pCi/g u Catfish 11/21/2017 12:00 lodine-131 -9.31E-04 2.43E-02 N/A pCi/g u Catfish 11/21/2017 12:00 Cesium-134 -3.60E-03 1.33E-02 1.30E+02 pCi/g u Catfish 11/21/2017 12:00 Cesium-137 -1.87E-03 1.13E-02 1.50E+02 pCi/g u Catfish 11/21/2017 12:00 Barium-140 1.29E-02 7.35E-02 N/A pCi/g u Catfish 83

11/21/2017 12:00 Lanthanum-140 -3.04E-03 2.42E-02 N/A pCi/g u Catfish 11/21/2017 12:00 Potassium-40 2.72E+OO 7.57E-02 N/A pCi/g Bass 11/21/2017 12:00 Manganese-54 9.0SE-04 8.03E-03 1.30E+02 pCi/g u Bass 11/21/2017 12:00 lron-59 9.68E-03 2.64E-02 2.60E+02 pCi/g u Bass 11/21/2017 12:00 Cobalt-58 -1.78E-03 8.21E-03 1.30E+02 pCi/g u Bass 11/21/2017 12:00 Cobalt-60 2.70E-03 9.63E-03 1.30E+02 pCi/g u Bass 11/21/2017 12:00 Zinc-65 -2.91E-03 2.06E-02 2.60E+02 pCi/g u Bass 11/21/2017 12:00 Zirconium-95 -1.00E-03 1.59E-02 N/A pCi/g u Bass 11/21/2017 12:00 Niobium-95 -2 .27E-03 7.48E-03 N/A pCi/g u Bass 11/21/2017 12:00 lodine-131 3.94E-03 2.08E-02 N/A pCi/g u Bass 11/21/2017 12:00 Cesium-134 -2 .llE-03 7.85E-03 1.30E+02 pCi/g u Bass 11/21/2017 12:00 Cesium-137 3.49E-04 7.77E-03 1.50E+02 pCi/g u Bass 11/21/2017 12:00 Barium-140 1.80E-02 5.38E-02 N/A pCi/g u Bass 11/21/2017 12:00 Lanthanum-140 -4.99E-03 1.33E-02 N/A pCi/g u Bass 84

Sample Data for: "F-2" U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qualifier Type 5/9/2017 12:00 Potassium-40 2.73E+OO 7.98E-02 N/A pCi/g Catfish 5/9/2017 12:00 Manganese-54 -4.60E-03 6.65E-03 1.30E+02 pCi/g u Catfish 5/9/2017 12:00 lron-59 -5.88E-03 1.33E-02 2.60E+02 pCi/g u Catfish 5/9/2017 12:00 Cobalt-58 -2.03E-04 7.83E-03 1.30E+02 pCi/g u Catfish 5/9/2017 12:00 Cobalt-60 2.02E-03 8.50E-03 1.30E+02 pCi/g u Catfish 5/9/2017 12:00 Zinc-65 1.05E-02 2.llE-02 2.60E+02 pCi/g u Catfish 5/9/2017 12:00 Zirconium-95 1.79E-03 1.44E-02 N/A pCi/g u Catfish 5/9/2017 12 :00 Niobium-95 6 .08E-03 9.54E-03 N/A pCi/g u Catfish 5/9/2017 12:00 lodine-131 3.69E-03 1.43E-02 N/A pCi/g u Catfish 5/9/2017 12:00 Cesium-134 -1.llE-03 7 .16E-03 1.30E+02 pCi/g u Catfish 5/9/2017 12:00 Cesium-137 -1.86E-03 7.19E-03 1.50E+02 pCi/g u Catfish 5/9/2017 12:00 Barium-140 -8.82E-03 3.38E-02 N/A pCi/g u Catfish 5/9/2017 12:00 Lanthanum -140 -6.58E-03 5.06E-03 N/A pCi/g u Catfish 5/9/2017 12:00 Potassium-40 6.19E-01 6.29E-01 N/A pCi/g u Bass 5/9/2017 12:00 Manganese-54 6.76E-03 2.34E-02 1.30E+02 pCi/g u Bass 5/9/2017 12:00 lron-59 -6.27E-03 4 .81E-02 2.60E+02 pCi/g u Bass 5/9/2017 12:00 Cobalt-58 -4.08E-03 1.62E-02 1.30E+02 pCi/g u Bass 5/9/2017 12 :00 Cobalt-60 -2.57E-03 2.19E-02 1.30E+02 pCi/g u Bass 5/9/2017 12:00 Zinc-65 -1.40E-03 3.68E-02 2.60E+02 pCi/g u Bass 5/9/2017 12:00 Zirconium-95 4 .15E-03 3.57E-02 N/A pCi/g u Bass 5/9/2017 12:00 Niobium-95 4 .77E-03 2.19E-02 N/A pCi/g u Bass 5/9/2017 12:00 lodine-131 1.89E-02 2.61E-02 N/A pCi/g u Bass 5/9/2017 12:00 Cesium-134 3.69E-07 2.31E-02 1.30E+02 pCi/115 u Bass 5/9/2017 12:00 Cesium-137 3.86E-04 1.72E-02 1.50E+02 pCi/g u Bass 5/9/2017 12 :00 Barium-140 -6.07E-02 5.25E-02 N/A pCi/g u Bass 5/9/2017 12:00 Lanthanum-140 -1.25E-02 2.57E-02 N/A pCi/g u Bass 11/21/2017 12:00 Potassium-40 2.70E+OO 7.20E-02 N/A pCi/g Catfish 11/21/2017 12:00 Manganese-54 1.29E-02 6.90E-03 1.30E+02 pCi/g UI Catfish 11/21/2017 12:00 lron-59 1.31E-02 2.0lE-02 2.60E+02 pCi/g u Catfish 11/21/2017 12:00 Cobalt-58 -3.42 E-03 7 .02E-03 1.30E+02 pCi/g u Catfish 11/21/2017 12:00 Cobalt-60 1.08E-03 7.59E-03 1.30E+02 pCi/g u Catfish 11/21/2017 12:00 Zinc-65 2 .97E-03 1.95E-02 2 .60E+02 pCi/g u Catfish 11/21/2017 12:00 Zirconium-95 -4.60E-03 1.59E-02 N/A pCi/g u Catfish 11/21/2017 12:00 Niobium-95 -9.0lE-03 8.69E-03 N/A pCi/g u Catfish 11/21/2017 12:00 lodine-131 3 .78E-03 2.31E-02 N/A pCi/g u Catfish 11/21/2017 12:00 Cesium-134 9.40E-04 9.53E-03 1.30E+02 pCi/g u Catfish 11/21/2017 12:00 Cesium-137 1.18E-04 7.58E-03 1.50E+02 pCi/g u Catfish 11/21/2017 12:00 Barium-140 6.69E-03 5.14E-02 N/A pCi/g u Catfish 11/21/2017 12:00 Lanthanum-140 3 .47E-04 1.79E-02 N/A pCi/g u Catfish 11/21/2017 12:00 Potassium-40 3.38E+OO 7.93E-02 N/A pCi/g Bass 85

11/21/2017 12:00 Manganese-54 1.88E-03 8.68E-03 1.30E+02 pCi/g u Bass 11/21/2017 12:00 lron-59 2.82E-03 2.58E-02 2.60E+02 pCi/g u Bass 11/21/2017 12:00 Cobalt-58 -2.43E-03 8.74E-03 1.30E+02 pCi/g u Bass 11/21/2017 12:00 Cobalt-60 1.lSE-03 9.66E-03 1.30E+02 pCi/g u Bass 11/21/2017 12:00 Zinc-65 -2.0SE-03 1.88E-02 2.60E+02 pCi/g u Bass 11/21/2017 12:00 Zirconium-95 4.03E-03 1.75E-02 N/A pCi/g u Bass 11/21/2017 12:00 Niobium-95 2.SlE-03 1.07E-02 N/A pCi/g u Bass 11/21/2017 12:00 lodine-131 6.76E-03 2.30E-02 N/A pCi/g u Bass 11/21/2017 12:00 Cesium-134 3.84E-03 9.lSE-03 1.30E+02 pCi/g u Bass 11/21/2017 12:00 Cesium-137 1.18E-03 8.llE-03 1.SOE+02 pCi/g u Bass 11/21/2017 12:00 Barium-140 -3.56E-04 4.85E-02 N/A pCi/g u Bass 11/21/2017 12:00 Lanthanum -140 -2.52E-03 1.56E-02 N/A pCi/g u Bass Sample Data for: "F-3" Collect Date Parameter Result MDC LLD Units Qualifier Type 5/9/2017 12:00 Tritium 1.13E+Ol 1.27E+OO 2.00E+OO pCi/g Catfish 86

I. Food Products Program Food products (pecans) were collected at the time of harvest. The samples are obtained at monitoring location ENE-9.0 at the time of harvest and are shipped to the contract laboratory for gamma isotopic analysis. There were food products (cucumbers, tomatoes, squash) produced that required monitoring for location E-4.2 in 2017.

Results of the gamma isotopic analyses are reported in Table 12 --

Environmental Food Products Gamma Isotopic Results. Naturally occurring Potassium 40 was detected in the samples as expected and all other required radionuclide results were reported as less than the required LLDs.

During the year 2017, there were no exceptions to the Food Products Program.

87

Table 12 -- Environmental Food Products Gamma Isotopic Results Sample Data for: "FP-1" U - Target isotope was analyzed for but not detected above the MDC and LLD Matrix Collect Date Parameter Result MDC LLD Units Qualifier Pecan 11/21/2017 12:00 Beryllium-7 -3.19E+Ol l.04E+02 N/A pCi/kg u Pecan 11/21/2017 12:00 Carbon-14 -8.07E+02 2.24E+03 3.00E-03 pCi/kg u Pecan 11/21/2017 12:00 Potassium -40 3.07E+03 l.43E+02 N/A pCi/kg Pecan 11/21/2017 12:00 Manganese-54 -2.28E+OO l.46E+Ol N/A pCi/kg u Pecan 11/21/2017 12:00 lron-59 -9.57E+OO 3.19E+Ol N/A pCi/kg u Pecan 11/21/2017 12:00 Cobalt-58 -2.82E+OO l.43E+Ol N/A pCi/kg u Pecan 11/21/2017 12:00 Cobalt-60 -6.56E-01 l.75E+Ol N/A pCi/kg u Pe can 11/21/2017 12:00 Zinc-65 2.21E+OO 3.83E+Ol N/A pCi/kg u Pecan 11/21/2017 12 :00 Zirconium-95 4.97E+OO 2.72E+Ol N/A pCi/kg u Pecan 11/21/2017 12:00 Niobium-95 -4.48E+OO l.44E+Ol N/A pCi/kg u Pecan 11/21/2017 12:00 lodine-131 l.llE+Ol 2.79E+Ol 6.00E+Ol pCi/kg u Pecan 11/21/2017 12:00 Cesium-134 -3.35E+OO l.80E+Ol 6.00E+Ol pCi/kg u Pecan 11/21/2017 12:00 Cesium-137 8.18E+OO l.88E+Ol 8.00E+Ol pCi/kg u Pecan 11/21/2017 12:00 Barium-140 l.52E+Ol 8.02E+Ol N/A pCi/kg u Pecan 11/21/2017 12:00 Lanthanum-140 -8.14E+OO 1.49E+Ol N/A pCi/kg u 88

Sample Data for: "FP-2" U - Target isotope was analyzed for but not detected above the MDC and LLD U1 - Uncertain identification for gamma spectroscopy Matrix Collect Date Parameter Result MDC LLD Units Qualifier Peas 6/6/2017 12 :00 Beryllium-7 l.53E+02 9.46E+Ol N/A pCi/kg UI Peas 6/6/2017 12 :00 Carbon-14 l.56E-01 l.80E+OO 3 .00E+OO pCi/g u Peas 6/6/2017 12:00 Potassium -40 2.67E+03 l.12E+02 N/A pCi/kg Peas 6/6/2017 12 :00 Manganese-54 -2.96E+OO l.03E+Ol N/A pCi/kg u Peas 6/6/2017 12:00 lron-59 -4.39E+OO 2.57E+Ol N/A pCi/kg u Peas 6/6/2017 12:00 Cobalt-58 -6.99E+OO l.32E+Ol N/A pCi/kg u Peas 6/6/2017 12:00 Cobalt-60 -6 .75E+OO l.12E+Ol N/A pCi/kg u Peas 6/6/2017 12:00 Zinc-65 5 .63E+OO 3.54E+Ol N/A pCi/kg u Pea s 6/6/2017 12:00 Zirconium-95 1.40E+Ol 2.99E+Ol N/A pCi/kg u Peas 6/6/2017 12:00 Niobium -95 -l.80 E+OO l.70E+Ol N/A pCi/kg u Peas 6/6/2017 12:00 lodine-131 -l.02E+Ol l.94E+Ol 6.00E+Ol pCi/kg u Peas 6/6/2017 12:00 Cesium-134 -2.27E+OO 1.45E+Ol 6 .00E+Ol pCi/kg u Peas 6/6/2017 12:00 Cesium -137 1.43E+OO 1.40E+Ol 8 .00E+Ol pCi/kg u Peas 6/6/2017 12:00 Barium-140 6 .89E+OO 5 .87E+Ol N/A pCi/kg u Peas 6/6/2017 12:00 Lanthanum-140 -8.56E+OO l.98E+Ol N/A pCi/kg u Tomatoes 6/6/2017 12:00 Beryllium-7 -6.40E+OO 7 .SSE+Ol N/A pCi/kg u Tomatoes 6/6/2017 12 :00 Carbon -14 2.0lE-01 l.79E+OO 3 .00E+OO pCi/g u Tomatoes 6/6/2017 12:00 Potassium-40 3.18E+03 9.14E+Ol N/A pCi/kg Tomatoes 6/6/2017 12:00 Manganese-54 3.lOE+OO l.07E+Ol N/A pCi/kg u Tomatoes 6/6/2017 12:00 lron-59 5 .59E-01 2 .13E+Ol N/A pCi/kg u Tomatoes 6/6/2017 12:00 Cobalt-58 2.00E+OO l.27E+Ol N/A pCi/kg u Tomatoes 6/6/2017 12:00 Cobalt-60 -2. 63E-01 l.20E+Ol N/A pCi/kg u Tomatoes 6/6/2017 12 :00 Zinc-65 2.99E+OO 2.35E+Ol N/A pCi/kg u Tomatoes 6/6/2017 12:00 Zirconium -95 -4.17E+OO l.83E+Ol N/A pCi/kg u Tomatoes 6/6/2017 12 :00 Niobium -95 2.07E+OO l.OSE+Ol N/A pCi/kg u Tomatoes 6/6/2017 12:00 lodine-131 l.32E+Ol l.58E+Ol 6.00E+Ol pCi/kg u Tomatoes 6/6/2017 12:00 Cesium-134 l.75E+OO l.llE+Ol 6.00E+Ol pCi/kg u Tomatoes 6/6/2017 12:00 Cesium-137 -7.0lE-01 l.llE+Ol 8 .00E+Ol pCi/kg u Tomatoes 6/6/2017 12:00 Barium-140 3.30E+OO 4 .66E+Ol N/A pCi/kg u Tomatoes 6/6/2017 12:00 Lanthanum-140 -3.17E-01 l.53E+Ol N/A pCi/kg u 89

J. Broadleaf Program Broadleaf sample collection is conducted in accordance with the requirements of the Radiological Environmental Monitoring Program and referenced in Table 13--Environmental Broadleaf Iodine-131 and Gamma Isotopic Results. The program specifies the sampling based on the absence of milk monitoring locations. One broadleaf control location is located at SW-13 .5 in the vicinity of the previous control milk location. The two indicator locations, N-1.45 and SW-1.0, are located near the site boundaries. The broadleaf samples consist of mainly native grasses and cedar leaves and are analyzed for Iodine-131 and gamma emitting isotopes.

All radionuclide analysis met their required LLDs. The naturally occurring radionuclides of Potassium-40 was found in 36 of 36 samples taken and radionuclide Beryllium-7 was present in 35 of 36 samples.

During the year 2017, there was no exception to the Broadleaf Program.

90

Table 13 -- Environmental Broadleaf lodine-131 and Gamma Isotopic Results Sample Data for: "BL-1" U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qualifier 1/31/2017 11:02 Beryllium-7 7.41E+03 2.20E+02 N/A pCi/kg 1/31/2017 11:02 Potassium-40 2.09E+03 2.13E+02 N/A pCi/kg 1/31/2017 11:02 Manganese-54 -7 .SSE+OO 2.75E+01 N/A pCi/kg u 1/31/2017 11:02 lron-5 9 -1.69E+01 4.53E+01 N/A pCi/kg u 1/31/2017 11:02 Cobalt-58 -1.31E+01 2.31E+01 N/A pCi/kg u 1/31/2017 11:02 Cobalt-60 -3.21E+01 2.47E+01 N/A pCi/kg u 1/31/2017 11:02 Zinc-65 1.49E+01 5.51E+01 N/A pCi/kg u 1/31/2017 11:02 Zirconium-95 4.78E+OO 4.79E+01 N/A pCi/kg u 1/31/2017 11:02 Niobium-95 -4.66E+OO 2.SSE+Ol N/A pCi/kg u 1/31/2017 11:02 lodine-131 -1.90E+OO 3.36E+01 6.00E+Ol pCi/kg u 1/31/2017 11:02 Cesium-134 -3.42E+01 3.01E+01 6.00E+Ol pCi/kg u 1/31/2017 11:02 Cesium-137 2.39E+01 3.15E+01 8.00E+Ol pCi/kg u 1/31/2017 11:02 Barium-140 -1.83E+OO 1.09E+02 N/A pCi/kg u 1/31/2017 11:02 Lanthanum-140 -5.25E+OO 3.36E+01 N/A pCi/kg u 2/28/2017 9:26 Beryllium-7 5.81E+03 1.42E+02 N/A pCi/kg 2/28/2017 9:26 Potassium -40 6.64E+02 1.88E+02 N/A pCi/kg 2/28/2017 9:26 Manganese-54 -8.29E+OO 1.68E+01 N/A pCi/kg u 2/28/2017 9:26 lron-59 -1.22E+01 2.74E+01 N/A pCi/kg u 2/28/2017 9:26 Cobalt-58 -5.60E+OO 1.61E+01 N/A pCi/kg u 2/28/2017 9:26 Cobalt-60 -1.60E+OO 1.81E+01 N/A pCi/kg u 2/28/2017 9:26 Zinc-65 3.88E+OO 3.93E+01 N/A pCi/kg u 2/28/2017 9:26 Zirconium-95 5.65E+OO 3.00E+Ol N/A pCi/kg u 2/28/2017 9:26 Niobium-95 6.99E+OO 1.87E+01 N/A pCi/kg u 2/28/2017 9:26 lodine-131 -6.19E+OO 1.89E+01 6.00E+Ol pCi/kg u 2/28/2017 9:26 Cesium-134 2.58E+OO 2.21E+01 6.00E+Ol pCi/kg u 2/28/2017 9:26 Cesium-137 6.85E+OO 1.95E+01 8.00E+Ol pCi/kg u 2/28/2017 9:26 Barium-140 2.06E+01 6.99E+01 N/A pCi/kg u 2/28/2017 9:26 Lanthanum -140 8.15E+OO 2.52E+01 N/A pCi/kg u 3/28/2017 10:44 Beryllium-7 5.58E+03 2.98E+02 N/A pCi/kg 3/28/2017 10:44 Potassium-40 6.17E+03 2.72E+02 N/A pCi/kg 3/28/2017 10:44 Manganese-54 -6.37E-01 3.47E+01 N/A pCi/kg u 3/28/2017 10:44 lron-59 -1.70E+01 7.82E+01 N/A pCi/kg u 3/28/2017 10:44 Cobalt-58 2.63E+OO 3.45E+01 N/A pCi/kg u 3/28/2017 10:44 Cobalt-60 5.18E+OO 3.83E+01 N/A pCi/kg u 3/28/2017 10:44 Zinc-65 1.97E+01 7.40E+01 N/A pCi/kg u 3/28/2017 10:44 Zirconium-95 8.69E-01 7.SOE+Ol N/A pCi/kg u 3/28/2017 10:44 Niobium-95 2.99E+01 3.SOE+Ol N/A pCi/kg u 3/28/2017 10:44 lodine-131 1.29E+01 5.64E+01 6.00E+Ol pCi/kg u 3/28/2017 10:44 Cesium-134 -7.42E+OO 3.80E+01 6.00E+Ol pCi/kg u 91

3/28/2017 10:44 Cesium-137 6.60E+OO 3.83E+Ol 8.00E+Ol pCi/kg u 3/28/2017 10:44 Barium-140 -6.92E+Ol l.35E+02 N/A pCi/kg u 3/28/2017 10:44 Lanthanum-140 8.07E+OO 4 .84E+Ol N/A pCi/kg u 4/25/2017 10:30 Beryllium-7 3.33E+03 2.60E+02 N/A pCi/kg 4/25/2017 10:30 Potassium-40 3.31E+03 2.97E+02 N/A pCi/kg 4/25/2017 10:30 Manganese-54 -7.35E+OO 3.25E+Ol N/A pCi/kg u 4/25/2017 10:30 lron-59 -l.93E+Ol 5.85E+Ol N/A pCi/kg u 4/25/2017 10:30 Cobalt-58 -9.31E+OO 3.54E+Ol N/A pCi/kg u 4/25/2017 10:30 Cobalt-60 6.37E+OO 4.37E+Ol N/A pCi/kg u 4/25/2017 10:30 Zinc-65 2.42E+Ol 7.74E+Ol N/A pCi/kg u 4/25/2017 10:30 Zirconium-95 -3.61E+OO 4 .73E+Ol N/A pCi/kg u 4/25/2017 10:30 Niobium-95 -2.57E+Ol 3.35E+Ol N/A pCi/kg u 4/25/2017 10:30 lodine-131 -6.98E+OO 5.57E+Ol 6.00E+Ol pCi/kg u 4/25/2017 10:30 Cesium-134 2.26E+OO 3.47E+Ol 6.00E+Ol pCi/kg u 4/25/2017 10:30 Cesium-137 -l.24E+Ol 3.82E+Ol 8.00E+Ol pCi/kg u 4/25/2017 10:30 Barium-140 -6 .37E+OO 1.45E+02 N/A pCi/kg u 4/25/2017 10:30 Lanthanum -140 -l.69E+Ol 3.86E+Ol N/A pCi/kg u 5/30/2017 11:00 Beryllium-7 5.44E+03 3.30E+02 N/A pCi/kg 5/30/2017 11:00 Potassium-40 3.09E+03 3.49E+02 N/A pCi/kg 5/30/2017 11:00 Manganese-54 -9.58E+OO 3.70E+Ol N/A pCi/kg u 5/30/2017 11:00 lron-59 -2.98E+Ol 8.47E+Ol N/A pCi/kg u 5/30/2017 11:00 Cobalt-58 -l.80E+OO 3.74E+Ol N/A pCi/kg u 5/30/2017 11:00 Cobalt-60 6.22E+OO 4.44E+Ol N/A pCi/kg u 5/30/2017 11:00 Zinc-65 -5 .82E+Ol 8 .18E+Ol N/A pCi/kg u 5/30/2017 11:00 Zirconium-95 3.23E+OO 6.96E+Ol N/A pCi/kg u 5/30/2017 11:00 Niobium-95 4.72E+OO 4 .12E+Ol N/A pCi/kg u 5/30/2017 11:00 lodine-131 -5.24E+OO 5.76E+Ol 6.00E+Ol pCi/kg u 5/30/2017 11:00 Cesium-134 -l.54E+O l 4.27E+Ol 6.00E+Ol pCi/kg u 5/30/2017 11:00 Cesium-137 -l.20E+Ol 4 .15E+Ol 8.00E+Ol pCi/kg u 5/30/2017 11:00 Barium-140 -5 .23E+Ol l.92E+02 N/A pCi/kg u 5/30/2017 11:00 Lanthanum-140 -2 .18E+Ol 5.30E+Ol N/A pCi/kg u 6/27/2017 10:01 Beryllium-7 l.73E+03 l.20E+02 N/A pCi/kg 6/27/2017 10:01 Potassium-40 5.89E+03 l.57E+02 N/A pCi/kg 6/27/2017 10:01 Ma nga nese-54 -7.91E-01 l.57E+Ol N/A pCi/kg u 6/27/2017 10:01 lron-59 4 .83E+OO 3.31E+Ol N/A pCi/kg u 6/27/2017 10:01 Cobalt-58 7.86E+OO l.61E+Ol N/A pCi/kg u 6/27/2017 10:01 Cobalt-60 -3.50E-01 l.69E+Ol N/A pCi/kg u 6/27/2017 10:01 Zinc-65 1.41E+Ol 3.94E+Ol N/A pCi/kg u 6/27/2017 10:01 Zirconium-95 8.59E+OO 2.70E+Ol N/A pCi/kg u 6/27/2017 10:01 Niobium-95 5.69E+OO l.55E+Ol N/A pCi/kg u 6/27/2017 10:01 lodine-131 l.18E+Ol 2.22E+Ol 6.00E+Ol pCi/kg u 6/27/2017 10:01 Cesium-134 -l.93E+OO l.66E+Ol 6.00E+Ol pCi/kg u 6/27/2017 10:01 Cesium-137 4.52E+OO l.50E+Ol 8.00E+Ol pCi/kg u 6/27/201710:01 Barium-140 3.21E+OO 6.43E+Ol N/A pCi/kg u 6/27/2017 10:01 Lanthanum-140 -1.45E+Ol 2.22E+Ol N/A pCi/kg u 7/25/2017 10:00 Beryllium-7 2.49E+03 2.27E+02 N/A pCi/kg 7/25/2017 10:00 Potassium-40 4 .32E+03 2.46E+02 N/A pCi/kg 92

7/25/2017 10:00 Manganese-54 3.98E+OO 2.86E+Ol N/A pCi/kg u 7/25/2017 10:00 lron-59 6.86E+OO 5.65E+Ol N/A pCi/kg u 7/25/2017 10:00 Cobalt-58 -2 .21E+OO 2.43E+Ol N/A pCi/kg u 7/25/2017 10:00 Cobalt-60 5.27E+Ol 3.56E+Ol N/A pCi/kg UI 7/25/2017 10:00 Zinc-65 4 .24E+Ol 6.61E+Ol N/A pCi/kg u 7/25/2017 10:00 Zirconium-95 -l.75E+OO 4 .84E+Ol N/A pCi/kg u 7/25/2017 10:00 Niobium-95 8.87E+OO 2.58E+Ol N/A pCi/kg u 7/25/2017 10:00 lodine-131 l.40E+Ol 5.17E+Ol 6.00E+Ol pCi/kg u 7/25/2017 10:00 Cesium-134 2.17E+Ol 3.09E+Ol 6.00E+Ol pCi/kg u 7/25/2017 10:00 Cesium-137 9.33E+OO 3.13E+Ol 8.00E+Ol pCi/kg u 7/25/2017 10:00 Barium-140 -4 .09E+Ol l.16E+02 N/A pCi/kg u 7/25/2017 10:00 Lanthanum-140 -l.89E+Ol 3.67E+Ol N/A pCi/kg u 8/29/2017 9:35 Beryllium-7 5.77E+03 2.35E+02 N/A pCi/kg 8/29/2017 9:35 Potassium-40 l.27E+04 2.90E+02 N/A pCi/kg 8/29/2017 9:35 Ma nga nese-54 8.23E+OO 3.31E+Ol N/A pCi/kg u 8/29/2017 9:35 lron -59 -3 .06E+Ol 5.44E+Ol N/A pCi/kg u 8/29/2017 9:35 Cobalt-58 -6.30E+OO 2.96E+Ol N/A pCi/kg u 8/29/2017 9:35 Cobalt-60 -1.llE+OO 3.22E+Ol N/A pCi/kg u 8/29/2017 9:35 Zinc-65 2.12E+Ol 7.94E+Ol N/A pCi/kg u 8/29/2017 9:35 Zirconium-95 5.31E+OO 5.79E+Ol N/A pCi/kg u 8/29/2017 9:35 Niobium-95 4.llE+OO 3.44E+Ol N/A pCi/kg u 8/29/2017 9:35 lodine-131 2.60E+OO 4.96E+Ol 6.00E+Ol pCi/kg u 8/29/2017 9:35 Cesium-134 4 .83E+OO 3.96E+Ol 6.00E+Ol pCi/kg u 8/29/2017 9:35 Cesium-137 5.60E+Ol 3.14E+Ol 8.00E+Ol pCi/kg UI 8/29/2017 9:35 Barium-140 -l.56E+O l l.50E+02 N/A pCi/kg u 8/29/2017 9:35 Lanthanum-140 -2.07E+O l 3.93E+Ol N/A pCi/kg u 9/26/2017 10:32 Beryllium-7 l.82E+03 2.44E+02 N/A pCi/kg 9/26/2017 10:32 Potassium-40 2.47E+03 3.04E+02 N/A pCi/kg 9/26/2017 10:32 Manganese-54 6.40E+OO 3.03E+Ol N/A pCi/kg u 9/26/2017 10:32 lron-59 4 .60E+OO 5.61E+Ol N/A pCi/kg u 9/26/2017 10:32 Cobalt-58 -7.26E+OO 2.58E+Ol N/A pCi/kg u 9/26/2017 10:32 Cobalt-60 -7.71E+OO 2.68E+Ol N/A pCi/kg u 9/26/2017 10:32 Zinc-65 3.65E+O l 7.36E+Ol N/A pCi/kg u 9/26/2017 10:32 Zirconium-95 l.08E+O l 5.74E+Ol N/A pCi/kg u 9/26/2017 10:32 Niobium-95 9.55E-01 2.97E+Ol N/A pCi/kg u 9/26/2017 10:32 lodine-131 9.03E+OO 5.15E+Ol 6.00E+Ol pCi/kg u 9/26/2017 10:32 Cesium-134 -l.06E+Ol 2.37E+Ol 6.00E+Ol pCi/kg u 9/26/2017 10:32 Cesium-137 -l.27E+Ol 2.57E+Ol 8.00E+Ol pCi/kg u 9/26/2017 10:32 Barium-140 l.78E+OO l.04E+02 N/A pCi/kg u 9/26/2017 10:32 Lanthanum-140 -l.73E+Ol 4.lOE+Ol N/A pCi/kg u 10/31/2017 14:47 Beryllium-7 2.29E+03 l.90E+02 N/A pCi/kg 10/31/2017 14:47 Potassium-40 4.32E+03 2.58E+02 N/A pCi/kg 10/31/2017 14:47 Manganese-54 7.09E+OO 2.89E+Ol N/A pCi/kg u 10/31/2017 14:47 lron-59 7.05E+OO 6.33E+Ol N/A pCi/kg u 10/31/2017 14:47 Cobalt-58 3.57E+OO 2.60E+Ol N/A pCi/kg u 10/31/2017 14:47 Cobalt-60 3.60E+OO 3.20E+Ol N/A pCi/kg u 10/31/2017 14:47 Zinc-65 2.58E+Ol 7.54E+Ol N/A pCi/kg u 93

10/31/2017 14:47 Zircon ium-95 -1.00E+Ol 4 .SSE+Ol N/A pCi/kg u 10/31/2017 14:47 Niobium-95 -3.94E+OO 3.08E+Ol N/A pCi/kg u 10/31/2017 14:47 lodine-131 2.91E+Ol 4 .94E+Ol 6.00E+Ol pCi/kg u 10/31/2017 14:47 Cesium-134 1.29E+Ol 2.64E+01 6.00E+Ol pCi/kg u 10/31/2017 14:47 Cesium-137 2.79E+OO 2.36E+Ol 8.00E+Ol pCi/kg u 10/31/2017 14:47 Barium-140 -3.49E+Ol 1.25E+02 N/A pCi/kg u 10/31/2017 14:47 Lanthanum -140 1.29E+01 4.72E+01 N/A pCi/kg u 11/28/2017 9:02 Beryllium-7 3.42E+03 1.45E+02 N/A pCi/kg 11/28/2017 9:02 Potassium-40 2.76E+03 1.SOE+02 N/A pCi/kg 11/28/2017 9:02 Manganese-54 1.82E+OO 1.92E+01 N/A pCi/kg u 11/28/2017 9:02 lron-59 -1.SlE+Ol 2.82E+Ol N/A pCi/kg u 11/28/2017 9:02 Cobalt-58 -4.78E+OO 1.83E+Ol N/A pCi/kg u 11/28/2017 9:02 Cobalt-60 -1.03E+01 1.74E+01 N/A pCi/kg u 11/28/2017 9:02 Zinc-65 -1.47E+Ol 3.29E+Ol N/A pCi/kg u 11/28/2017 9:02 Zirconium-95 2.47E+Ol 3.46E+Ol N/A pCi/kg u 11/28/2017 9:02 Niobium-95 -2.47E+OO 1.83E+Ol N/A pCi/kg u 11/28/2017 9:02 lodine-131 -2.80E+01 2.33E+01 6.00E+Ol pCi/kg u 11/28/2017 9:02 Cesium-134 1.73E+Ol 2.lSE+Ol 6.00E+Ol pCi/kg u 11/28/2017 9:02 Cesium-137 2.85E+OO 1.91E+Ol 8.00E+Ol pCi/kg u 11/28/2017 9:02 Barium-140 -1.25E+01 7.67E+01 N/A pCi/kg u 11/28/2017 9:02 Lanthanum-140 5.17E+OO 2.lSE+Ol N/A pCi/kg u 12/26/2017 10:46 Beryllium-7 5.52E+03 2.32E+02 N/A pCi/kg 12/26/2017 10:46 Potassium-40 2.03E+03 3.25E+02 N/A pCi/kg 12/26/2017 10:46 Manganese-54 1.62E+Ol 3.13E+Ol N/A pCi/kg u 12/26/2017 10:46 lron-59 -5.54E+OO 5.84E+01 N/A pCi/kg u 12/26/2017 10:46 Coba lt-58 -7.86E+OO 2.71E+01 N/A pCi/kg u 12/26/2017 10:46 Cobalt-60 3.96E+OO 3.22E+01 N/A pCi/kg u 12/26/2017 10:46 Zinc-65 1.30E+O l 7.07E+Ol N/A pCi/kg u 12/26/2017 10:46 Zirconium-95 2.75E+O l 5.37E+Ol N/A pCi/kg u 12/26/2017 10:46 Niobium-95 -4.SSE+OO 2.81E+Ol N/A pCi/kg u 12/26/2017 10:46 lodine-13 1 -8.31E+OO 2.98E+Ol 6.00E+Ol pCi/kg u 12/26/2017 10:46 Cesium-134 1.76E+Ol 3.40E+Ol 6.00E+Ol pCi/kg u 12/26/2017 10:46 Cesium-137 8.69E+OO 3.17E+01 8.00E+Ol pCi/kg u 12/26/2017 10:46 Barium-140 1.86E+OO 1.09E+02 N/A pCi/kg u 12/26/2017 10:46 Lanthanum-140 -1. 99E+OO 3.80E+Ol N/A pCi/kg u 94

Sample Data for: "BL-2" U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qualifier 1/31/2017 8 :57 Beryllium-7 5.85E+03 2.02E+02 N/A pCi/kg 1/31/2017 8 :57 Potassium-40 l.80E+03 2.22E+02 N/A pCi/kg 1/31/2017 8:57 Manganese-54 -9.lOE+OO 2.45E+Ol N/A pCi/kg u 1/31/2017 8:57 lron-59 -4.06E+OO 4.37E+Ol N/A pCi/kg u 1/31/2017 8:57 Cobalt-58 2.96E+OO 2.SlE+Ol N/A pCi/kg u 1/31/2017 8:57 Cobalt-60 2.65E+OO 2.53E+Ol N/A pCi/kg u 1/31/2017 8:57 Zinc-65 -2.79E+OO 5.20E+Ol N/A pCi/kg u 1/31/2017 8 :57 Zirconium-95 -5.82E+OO 4 .17E+Ol N/A pCi/kg u 1/31/2017 8:57 Niobi um-95 -l.53E+O l 2.56E+Ol N/A pCi/kg u 1/31/2017 8:57 lod ine-131 -7.96E+OO 2.99E+Ol 6.00E+Ol pCi/kg u 1/31/2017 8:57 Cesium-134 4.58E+OO 2.84E+Ol 6.00E+Ol pCi/kg u 1/31/2017 8 :57 Cesium-137 -4.54E+OO 2.62E+Ol 8.00E+Ol pCi/kg u 1/31/2017 8:57 Barium-140 -l.13E+Ol l.03E+02 N/A pCi/kg u 1/31/2017 8:57 Lanthanum -140 4.53E+Ol 3.41E+Ol N/A pCi/kg UI 2/28/2017 7 :18 Beryllium-7 6.18E+03 2.26E+02 N/A pCi/kg 2/28/2017 7 :18 Potassium-40 9 .08E+02 2.10E+02 N/A pCi/kg 2/28/2017 7:18 Manganese-54 -2.82E-01 2.77E+Ol N/A pCi/kg u 2/28/2017 7:18 lron-59 -6.49E+OO 4 .61E+Ol N/A pCi/kg u 2/28/2017 7:18 Cobalt-58 -5.32E+OO 2.67E+Ol N/A pCi/kg u 2/28/2017 7 :18 Cobalt-60 7.68E+OO 2.46E+Ol N/A pCi/kg u 2/28/2017 7 :18 Zinc-65 9 .18E+OO 4 .61E+Ol N/A pCi/kg u 2/28/2017 7 :18 Zirconium-95 6.04E+OO 4.65E+Ol N/A pCi/kg u 2/28/2017 7 :18 Niobium-95 6 .SlE-01 2.74E+Ol N/A pCi/kg u 2/28/2017 7:18 lodine-131 -l.97E+Ol 3.llE+Ol 6.00E+Ol pCi/kg u 2/28/2017 7 :18 Cesium-134 8.31E+OO 3 .llE+Ol 6.00E+Ol pCi/kg u 2/28/2017 7 :18 Cesium -137 -2.45E+OO 2 .89E+Ol 8.00E+Ol pCi/kg u 2/28/2017 7 :18 Barium-140 9.90E-01 l.06E+02 N/A pCi/kg u 2/28/2017 7:18 Lanthanum -140 -1.0SE+Ol 2.SOE+Ol N/A pCi/kg u 3/28/2017 8:21 Beryllium-7 2.58E+03 3 .09E+02 N/A pCi/kg 3/28/2017 8:21 Potassium -40 5.SSE+02 2.77E+02 N/A pCi/kg 3/28/2017 8:21 Manganese-54 9 .72E+OO 3.38E+Ol N/A pCi/kg u 3/28/2017 8:21 lron-59 2.74E+Ol 8.06E+Ol N/A pCi/kg u 3/28/2017 8:21 Cobalt-58 7 .72E+OO 3.53E+Ol N/A pCi/kg u 3/28/2017 8:21 Cobalt-60 -5 .80E+OO 3 .47E+Ol N/A pCi/kg u 3/28/2017 8 :21 Zinc-65 3 .96E+Ol 8 .llE+Ol N/A pCi/kg u 3/28/2017 8 :21 Zirconium-95 -l.04 E+Ol 6.46E+Ol N/A pCi/kg u 3/28/2017 8 :21 Niobium -95 l.34E+Ol 3.35E+Ol N/A pCi/kg u 3/28/2017 8:21 lodine-131 9 .54E+OO 4.85E+Ol 6.00E+Ol pCi/kg u 3/28/2017 8:21 Cesium-134 -l.02E+Ol 2.97E+Ol 6 .00E+Ol pCi/kg u 3/28/2017 8 :21 Cesium-137 l.48E+Ol 4.00E+Ol 8.00E+Ol pCi/kg u 3/28/2017 8 :21 Barium-140 l.17E+Ol l.49E+02 N/A pCi/kg u 95

3/28/2017 8:21 Lanthanum-140 -5.90E+OO 4 .26E+Ol N/A pCi/kg u 4/25/2017 8:15 Beryllium-7 1.40E+03 2.38E+02 N/A pCi/kg 4/25/2017 8 :15 Potassium-40 3.66E+03 3.43E+02 N/A pCi/kg 4/25/2017 8:15 Manganese-54 1.69E+OO 2.91E+Ol N/A pCi/kg u 4/25/2017 8:15 lron-59 1.41E+Ol 6.30E+Ol N/A pCi/kg u 4/25/2017 8:15 Cobalt-58 -1.28E-01 2.61E+Ol N/A pCi/kg u 4/25/2017 8:15 Cobalt-60 -9.99E-01 2.lOE+Ol N/A pCi/kg u 4/25/2017 8:15 Zinc-65 -9.55E+OO 6.59E+Ol N/A pCi/kg u 4/25/2017 8 :15 Zirconium-95 -1.05E+Ol 4.24E+Ol N/A pCi/kg u 4/25/2017 8:15 Niobium-95 1.36E+Ol 3.57E+Ol N/A pCi/kg u 4/25/2017 8:15 lodine-13 1 2.81 E+Ol 5.47E+Ol 6.00E+Ol pCi/kg u 4/25/2017 8 :15 Cesium-134 5.07E+OO 3.68E+Ol 6.00E+Ol pCi/kg u 4/25/2017 8:15 Cesium-13 7 -1.48E+Ol 2.32E+Ol 8 .00E+Ol pCi/kg u 4/25/2017 8:15 Barium-140 3.91E+OO 1.29E+02 N/A pCi/kg u 4/25/2017 8:15 Lanthanum-140 9 .17E-01 5 .02E+Ol N/A pCi/kg u 5/30/2017 9:12 Beryllium-7 4.74E+03 2.26E+02 N/A pCi/kg 5/30/2017 9:12 Potassium-40 4.18E+03 3 .04E+02 N/A pCi/kg 5/30/2017 9:12 Manganese-54 1.82E+Ol 3.03E+Ol N/A pCi/kg u 5/30/2017 9:12 lron 9.93E-01 6.14E+Ol N/A pCi/kg u 5/30/2017 9:12 Cobalt-58 -4.79E+OO 2.82E+Ol N/A pCi/kg u 5/30/2017 9:12 Cobalt-60 2.15E+Ol 2.70E+Ol N/A pCi/kg u 5/30/2017 9:12 Zinc-65 -5.53E+OO 5.70E+Ol N/A pCi/kg u 5/30/2017 9:12 Zirconium-95 -1.06E+Ol 5.0lE+Ol N/A pCi/kg u 5/30/2017 9:12 Niobium -95 1.50E+O l 3.35E+Ol N/A pCi/kg u 5/30/2017 9:12 lodine-131 1.32E+OO 4 .84E+Ol 6.00E+Ol pCi/kg u 5/30/2017 9:12 Cesium-134 -1.0lE+Ol 2.85E+Ol 6.00E+Ol pCi/kg u 5/30/2017 9:12 Cesium-137 -1.63 E+Ol 2.54E+Ol 8 .00E+Ol pCi/kg u 5/30/2017 9:12 Barium-140 -6.45E+OO 1.31E+02 N/A pCi/kg u 5/30/2017 9:12 Lanthanum-140 -1.45E+Ol 4.00E+Ol N/A pCi/kg u 6/27/2017 7:52 Beryllium-7 2.03E+03 1.22E+02 N/A pCi/kg 6/27/2017 7:52 Potassium-40 3.64E+03 1.59E+02 N/A pCi/kg 6/27/2017 7:52 Manganese-54 5.29E+OO 1.56E+Ol N/A pCi/kg u 6/27/2017 7:52 lron-59 2.21E+OO 2.88E+Ol N/A pCi/kg u 6/27/2017 7:52 Cobalt-58 -5 .16E+OO 1.44E+Ol N/A pCi/kg u 6/27/2017 7:52 Cobalt-60 -1.20E+OO 1.52E+Ol N/A pCi/kg u 6/27/2017 7:52 Zinc-65 4.26E+OO 3.47E+Ol N/A pCi/kg u 6/27/2017 7:52 Zirconium-95 4.55E+OO 2.96E+Ol N/A pCi/kg u 6/27/2017 7:52 Niobium-95 1.29E+Ol 1.70E+Ol N/A pCi/kg u 6/27/2017 7:52 lodine-131 7 .35E+OO 2.56E+Ol 6.00E+Ol pCi/kg u 6/27/2017 7:52 Cesium-134 1.03E+Ol 1.81E+Ol 6.00E+Ol pCi/kg u 6/27/2017 7:52 Cesium-137 -5 .39 E+OO 1.49E+Ol 8.00E+Ol pCi/kg u 6/27/2017 7:52 Barium-140 2.78E+Ol 7.64E+Ol N/A pCi/kg u 6/27/2017 7:52 Lanthanum-140 -4.64E+OO 2.12E+Ol N/A pCi/kg u 7/25/2017 8:00 Beryllium-7 1.34E+03 2.17E+02 N/A pCi/kg 7/25/2017 8 :00 Potassium-40 4.76E+03 2.46E+02 N/A pCi/kg 7/25/2017 8:00 Manganese-54 7 .09E+OO 2.95E+Ol N/A pCi/kg u 7/25/2017 8 :00 lron-59 1.78E+Ol 6.31E+Ol N/A pCi/kg u 96

7/25/2017 8:00 Cobalt-58 9.70E+OO 3.09E+Ol N/A pCi/kg u 7/25/2017 8:00 Cobalt-60 -l.38E+OO 2.77E+Ol N/A pCi/kg u 7/25/2017 8:00 Zinc-65 l.07E+Ol 7.04E+Ol N/A pCi/kg u 7/25/2017 8:00 Zirconium-95 -5.03E-01 5.37E+Ol N/A pCi/kg u 7/25/2017 8:00 Niobium-95 l.07E+Ol 3.13E+Ol N/A pCi/kg u 7/25/2017 8:00 lodine-131 -1.44E+Ol 3.62E+Ol 6.00E+Ol pCi/kg u 7/25/2017 8:00 Cesium-134 7.50E+OO 3.41E+Ol 6.00E+Ol pCi/kg u 7/25/2017 8:00 Cesium-137 8.33E+OO 3.06E+Ol 8.00E+Ol pCi/kg u 7/25/2017 8:00 Barium-140 2.54E+Ol l.32E+02 N/A pCi/kg u 7/25/2017 8:00 Lanthanum-140 -4.58E+OO 3.71E+Ol N/A pCi/kg u 8/29/2017 7:45 Beryllium-7 2.29E+03 2.39E+02 N/A pCi/kg 8/29/2017 7:45 Potassium-40 4.16E+03 2.44E+02 N/A pCi/kg 8/29/2017 7:45 Manganese-54 7.06E+OO 3.38E+Ol N/A pCi/kg u 8/29/2017 7:45 lron-59 l.19E+Ol 6.57E+Ol N/A pCi/kg u 8/29/2017 7:45 Cobalt-58 6.51E+OO 2.99E+Ol N/A pCi/kg u 8/29/2017 7:45 Cobalt-60 2.04E+Ol 3.47E+Ol N/A pCi/kg u 8/29/2017 7:45 Zinc-65 9.12E-01 4.58E+Ol N/A pCi/kg u 8/29/2017 7:45 Zirconium-95 -1.llE+Ol 5.25E+Ol N/A pCi/kg u 8/29/2017 7:45 Niobium-95 -2.05E+Ol 3.13E+Ol N/A pCi/kg u 8/29/2017 7:45 lodine-131 2.31E+Ol 5.76E+Ol 6.00E+Ol pCi/kg u 8/29/2017 7:45 Cesium-134 8.54E+OO 3.47E+Ol 6.00E+Ol pCi/kg u 8/29/2017 7:45 Cesium-137 2.27E+OO 3.09E+Ol 8.00E+Ol pCi/kg u 8/29/2017 7:45 Barium-140 -5.98E+Ol l.28E+02 N/A pCi/kg u 8/29/2017 7:45 Lanthanum-140 -2.50E+Ol 4.46E+Ol N/A pCi/kg u 9/26/2017 7:34 Beryllium-7 l.25E+03 l.73E+02 N/A pCi/kg 9/26/2017 7:34 Potassium-40 2.69E+03 2.37E+02 N/A pCi/kg 9/26/2017 7:34 Manganese-54 7.56E+OO 2.92E+Ol N/A pCi/kg u 9/26/2017 7:34 lron-59 8.15E+OO 5.34E+Ol N/A pCi/kg u 9/26/2017 7:34 Cobalt-58 -4.63E+OO 2.18E+Ol N/A pCi/kg u 9/26/2017 7:34 Cobalt-60 8.19E+OO 3.29E+Ol N/A pCi/kg u 9/26/2017 7:34 Zinc-65 2.44E+OO 5.84E+Ol N/A pCi/kg u 9/26/2017 7:34 Zirconium-95 2.49E+Ol 4.87E+Ol N/A pCi/kg u 9/26/2017 7:34 Niobium-95 -5.06E+OO l.66E+Ol N/A pCi/kg u 9/26/2017 7:34 lodine-131 -l.36E+Ol 3.64E+Ol 6.00E+Ol pCi/kg u 9/26/2017 7:34 Cesium-134 l.57E+Ol 2.80E+Ol 6.00E+Ol pCi/kg u 9/26/2017 7:34 Cesium-137 l.76E+Ol 3.06E+Ol 8.00E+Ol pCi/kg u 9/26/2017 7 :34 Barium-140 l.53E+Ol l.17E+02 N/A pCi/kg u 9/26/2017 7:34 Lanthanum-140 -l.12E+Ol 2.47E+Ol N/A pCi/kg u 10/31/2017 13:08 Beryllium-7 4.45E+03 2.20E+02 N/A pCi/kg 10/31/2017 13:08 Potassium-40 3.26E+03 2.91E+02 N/A pCi/kg 10/31/2017 13:08 Manganese-54 -l.71E+OO 2.55E+Ol N/A pCi/kg u 10/31/2017 13:08 lron-59 l.24E+Ol 5.99E+Ol N/A pCi/kg u 10/31/2017 13 :08 Cobalt-58 2.67E+OO 2.41E+Ol N/A pCi/kg u 10/31/2017 13:08 Cobalt-60 l.44E+Ol 2.97E+Ol N/A pCi/kg u 10/31/2017 13:08 Zinc-65 -2.61E+Ol 5 .47E+Ol N/A pCi/kg u 10/31/2017 13:08 Zirconium-95 2.68E+OO 4.64E+Ol N/A pCi/kg u 10/31/2017 13:08 Niobium-95 l.16E+Ol 3.21E+Ol N/A pCi/kg u 97

10/31/2017 13:08 lodine-131 l.84E+Ol 5.30E+Ol 6.00E+Ol pCi/kg u 10/31/2017 13:08 Ces ium-134 5.17E+OO 2.74E+Ol 6.00E+Ol pCi/kg u 10/31/2017 13 :08 Cesium-137 -2.53E+OO 2.59E+Ol 8 .00E+Ol pCi/kg u 10/31/2017 13:08 Barium-140 2.21E+Ol l.32E+02 N/A pCi/kg u 10/31/2017 13:08 Lanthanum-140 4.68E+OO 5.24E+Ol N/A pCi/kg u 11/28/2017 7:38 Beryllium-7 l.81E+03 l.59E+02 N/A pCi/kg 11/28/2017 7 :38 Potassium-40 3.17E+03 l.74E+02 N/A pCi/kg 11/28/2017 7 :38 Manganese-54 -l.06E+OO l.76E+Ol N/A pCi/kg u 11/28/2017 7 :38 lron-59 -4.03E+OO 3.98E+Ol N/A pCi/kg u 11/28/2017 7 :38 Cobalt-58 -2.88E+OO l.78E+Ol N/A pCi/kg u 11/28/2017 7:38 Cobalt-60 5.87E+OO l.86E+Ol N/A pCi/kg u 11/28/2017 7:38 Zinc-65 8.52E+OO 4.02E+Ol N/A pCi/kg u 11/28/2017 7:38 Zirconium-95 2.41E+OO 3.25E+Ol N/A pCi/kg u 11/28/2017 7:38 Niob ium-95 -2.llE+OO l.82E+Ol N/A pCi/kg u 11/28/2017 7 :38 lodine-131 -5.37E+OO 2.90E+Ol 6.00E+Ol pCi/kg u 11/28/2017 7:38 Cesium-134 4 .65E+OO l.95E+Ol 6.00E+Ol pCi/kg u 11/28/2017 7:38 Cesium-137 -l.56E+OO l.71E+Ol 8.00E+Ol pCi/kg u 11/28/2017 7:38 Barium-140 2.44E+Ol 9.32E+Ol N/A pCi/kg u 11/28/2017 7 :38 Lanthanum-140 -2.02E+OO 3.35E+Ol N/A pCi/kg u 12/26/2017 9:02 Beryllium-7 3.90E+03 2.62E+02 N/A pCi/kg 12/26/2017 9:02 Potassium-40 l.SOE+03 3.58E+02 N/A pCi/kg 12/26/2017 9 :02 Manganese-54 8.24E+OO 3.78E+Ol N/A pCi/kg u 12/26/2017 9:02 lron-59 -2.53E-01 7.14E+Ol N/A pCi/kg u 12/26/2017 9:02 Cobalt-58 -6.89E-01 3.42E+Ol N/A pCi/kg u 12/26/2017 9 :02 Cobalt-60 -3.21E+Ol 4.41E+Ol N/A pCi/kg u 12/26/2017 9:02 Zinc-65 l.OSE+Ol 7.60E+Ol N/A pCi/kg u 12/26/2017 9:02 Zirconium-95 l.88E+Ol 6.39E+Ol N/A pCi/kg u 12/26/2017 9:02 Niobium 3.68E+Ol 3.60E+Ol N/A pCi/kg u 12/26/2017 9:02 lodine-131 -2.48E+Ol 3.92E+Ol 6.00E+Ol pCi/kg u 12/26/2017 9:02 Cesium-134 -4.70E+OO 4.26E+Ol 6.00E+Ol pCi/kg u 12/26/2017 9:02 Cesium-137 2.18E+Ol 4.00E+Ol 8.00E+Ol pCi/kg u 12/26/2017 9:02 Barium-140 l.30E+Ol l.38E+02 N/A pCi/kg u 12/26/2017 9:02 Lanthanum-140 -l.09E+Ol 4 .24E+Ol N/A pCi/kg u 98

Sample Data for: "BL-3" U - Target isotope was analyzed for but not detected above the MDC and LLD UI - Uncertain identification for gamma spectroscopy Collect Date Parameter Result MDC LLD Units Qualifier 1/31/2017 9:52 Beryllium-7 l.12E+04 2.29E+02 N/A pCi/kg 1/31/2017 9:52 Potassium-40 l.SOE+03 2.37E+02 N/A pCi/kg 1/31/2017 9:52 Manganese-54 -2.24E-01 3.00E+Ol N/A pCi/kg u 1/31/2017 9:52 lron-59 6.40E+OO 4 .68E+Ol N/A pCi/kg u 1/31/2017 9:52 Cobalt-58 -8.06E+OO 2.76E+Ol N/A pCi/kg u 1/31/2017 9:52 Cobalt-60 2.66E+OO 2.62E+Ol N/A pCi/kg u 1/31/2017 9:52 Zinc-65 2.79E+Ol 4 .62E+Ol N/A pCi/kg u 1/31/2017 9:52 Zirconium-95 7.08E+OO 4.75E+Ol N/A pCi/kg u 1/31/2017 9:52 Niobium-95 5.69E+OO 2.66E+Ol N/A pCi/kg u 1/31/2017 9:52 lodine-131 -2.04E+Ol 3.SlE+Ol 6.00E+Ol pCi/kg u 1/31/2017 9:52 Cesium-134 4.23E+OO 3.27E+Ol 6.00E+Ol pCi/kg u 1/31/2017 9:52 Cesium-137 2.16E+Ol 3.17E+Ol 8.00E+Ol pCi/kg u 1/31/2017 9:52 Barium-140 5.13E+Ol l.24E+02 N/A pCi/kg u 1/31/2017 9:52 Lanthanum-140 -9.SSE+OO 3.32E+Ol N/A pCi/kg u 2/28/2017 8:09 Beryllium-7 9 .61E+03 l.59E+02 N/A pCi/kg 2/28/2017 8:09 Potassium-40 8 .65E+02 l.70E+02 N/A pCi/kg 2/28/2017 8:09 Manganese-54 6.08E-01 l.93E+Ol N/A pCi/kg u 2/28/2017 8:09 lron-59 2.73E+OO 3.58E+Ol N/A pCi/kg u 2/28/2017 8:09 Cobalt-58 -2.45E+OO l.66E+Ol N/A pCi/kg u 2/28/2017 8:09 Cobalt-60 2.27E+OO 2.19E+Ol N/A pCi/kg u 2/28/2017 8:09 Zinc-65 -2 .08E+OO 3.65E+Ol N/A pCi/kg u 2/28/2017 8:09 Zirconium-95 -l.39E+Ol 3.24E+Ol N/A pCi/kg u 2/28/2017 8:09 Niobium -95 7.85E+OO 2.06E+Ol N/A pCi/kg u 2/28/2017 8:09 lodine-131 -9.83E+OO 2.12E+Ol 6.00E+Ol pCi/kg u 2/28/2017 8:09 Cesium-134 -4.43E+OO 2.03E+Ol 6.00E+Ol pCi/kg u 2/28/2017 8:09 Cesium-137 -8.46E+OO 2.80E+Ol 8.00E+Ol pCi/kg u 2/28/2017 8:09 Barium-140 7.SlE+OO 7.56E+Ol N/A pCi/kg u 2/28/2017 8:09 Lanthanum-140 -l.17E+Ol 2.31E+Ol N/A pCi/kg u 3/28/2017 9:30 Beryllium-7 4 .06E+03 3.04E+02 N/A pCi/kg 3/28/2017 9:30 Potassium-40 3.03E+03 5.0SE+02 N/A pCi/kg 3/28/2017 9:30 Manganese-54 3.89E+Ol 3.32E+Ol N/A pCi/kg UI 3/28/2017 9:30 lron-59 -8.09E+OO 8.03E+Ol N/A pCi/kg u 3/28/2017 9:30 Cobalt-58 -l.25E+Ol 3.32E+Ol N/A pCi/kg u 3/28/2017 9:30 Cobalt-60 6.16E+OO 4.23E+Ol N/A pCi/kg u 3/28/2017 9:30 Zinc-65 2.37E+Ol 8.90E+Ol N/A pCi/kg u 3/28/2017 9:30 Zirconium-95 -2.57E+Ol 6.lOE+Ol N/A pCi/kg u 3/28/2017 9:30 Niobium-95 6.08E+OO 4.12E+Ol N/A pCi/kg u 3/28/2017 9:30 lodine-131 l.58E+Ol 5.73E+Ol 6.00E+Ol pCi/kg u 3/28/2017 9:30 Cesium-134 -8.46E-01 4.46E+Ol 6.00E+Ol pCi/kg u 3/28/2017 9:30 Cesium-137 2.SOE+OO 4 .37E+Ol 8.00E+Ol pCi/kg u 3/28/2017 9:30 Barium-140 -8.20E+Ol l.63E+02 N/A pCi/kg u 99

3/28/2017 9:30 Lanthanum-140 -2.89E+OO 4.16E+Ol N/A pCi/kg u 4/25/2017 9:25 Beryllium-7 8.08E+02 l.87E+02 N/A pCi/kg 4/25/2017 9:25 Potassium-40 4.18E+03 2.43E+02 N/A pCi/kg 4/25/2017 9:25 Manganese-54 -7.07E-01 2.27E+Ol N/A pCi/kg u 4/25/2017 9:25 lron-59 -9.07E+OO 4 .27 E+Ol N/A p(i/kg u 4/25/2017 9:25 Cobalt-58 -2.68E+OO 2.12 E+Ol N/A pCi/kg u 4/25/2017 9:25 Cobalt-60 5.44E+OO 2.67E+Ol N/A pCi/kg u 4/25/2017 9:25 Zinc-65 -l.22E+Ol 3.45E+Ol N/A pCi/kg u 4/25/2017 9:25 Zirconium-95 -2.35E+OO 3.83E+Ol N/A pCi/kg u 4/25/2017 9:25 Niobium-95 -4.43E+OO 2.39E+Ol N/A pCi/kg u 4/25/2017 9:25 lodine-131 2.22E+OO 3.83E+Ol 6.00E+Ol pCi/kg u 4/25/2017 9:25 Cesium-134 6.44E+OO 2.36E+Ol 6.00E+Ol pCi/kg u 4/25/2017 9:25 Cesium-137 -4.60E-01 2.16E+Ol 8.00E+Ol pCi/kg u 4/25/2017 9:25 Barium-140 l.52E+Ol l.14E+02 N/A pCi/kg u 4/25/2017 9:25 Lanthanum-140 -5.59E+OO 2.81E+Ol N/A pCi/kg u 5/30/2017 10:00 Beryllium-7 4.29E+03 2.81E+02 N/A pCi/kg 5/30/2017 10:00 Potassium-40 4.05E+03 3.33E+02 N/A pCi/kg 5/30/2017 10:00 Manganese-54 -l.62E+Ol 3.43E+Ol N/A pCi/kg u 5/30/2017 10:00 lron-59 -2.28E+Ol 6.93E+Ol N/A pCi/kg u 5/30/2017 10:00 Cobalt-58 -4.64E+OO 2.29E+Ol N/A pCi/kg u 5/30/2017 10:00 Cobalt-60 -2.51E+OO 3.40E+Ol N/A pCi/kg u 5/30/2017 10:00 Zinc-65 l.86E+Ol 7.88E+Ol N/A pCi/kg u 5/30/2017 10:00 Zirconium-95 8.89E+OO 6.39E+Ol N/A pCi/kg u 5/30/2017 10:00 Niobium-95 6.90E+OO 3.81E+Ol N/A pCi/kg u 5/30/2017 10:00 lodine-131 -9.57E+OO 5.09E+Ol 6.00E+Ol pCi/kg u 5/30/2017 10:00 Cesium-134 -4.54E+OO 3.54E+Ol 6.00E+Ol pCi/kg u 5/30/2017 10:00 Cesium-137 -2.19E+OO 3.69E+Ol 8.00E+Ol pCi/kg u 5/30/2017 10:00 Barium-140 l.27E+Ol l.53E+02 N/A pCi/kg u 5/30/2017 10:00 Lanthanum-140 -l.25E-01 5.54E+Ol N/A pCi/kg u 6/27/2017 8:47 Beryllium-7 6.43E+03 l.68E+02 N/A pCi/kg 6/27/2017 8:47 Potassium-40 3.SOE+03 l.77E+02 N/A pCi/kg 6/27/2017 8:47 Manganese-54 1.44E+Ol 2.17E+Ol N/A pCi/kg u 6/27/2017 8:47 lron-59 -l.85E+Ol 4 .03E+Ol N/A pCi/kg u 6/27/2017 8:47 Cobalt-58 -2.45E+OO l.92E+Ol N/A pCi/kg u 6/27/2017 8:47 Cobalt-60 l.07E+OO l.90E+Ol N/A pCi/kg u 6/27/2017 8:47 Zinc-65 -4.60E+OO 4 .19E+Ol N/A pCi/kg u 6/27/2017 8:47 Zirconium-95 -7.67E+OO 3.64E+Ol N/A pCi/kg u 6/27/2017 8:47 Niobium-95 l.21E+Ol 2.27E+Ol N/A pCi/kg u 6/27/2017 8:47 lodine-131 l.97E+OO 3.27E+Ol 6.00E+Ol pCi/kg u 6/27/2017 8:47 Cesium-134 3.90E+OO 2.17E+Ol 6.00E+Ol pCi/kg u 6/27/2017 8:47 Cesium-137 l.09E+Ol 2.03E+Ol 8.00E+Ol p(i/kg u 6/27/2017 8:47 Barium-140 -l.18E+Ol 9.51E+Ol N/A pCi/kg u 6/27/2017 8:47 Lanthanum-140 -l.16E+Ol 2.90E+Ol N/A pCi/kg u 7/25/2017 9:00 Beryllium-7 5.22E+03 3.14E+02 N/A pCi/kg 7/25/2017 9:00 Potassium-40 6.34E+03 3.52E+02 N/A pCi/kg 7/25/2017 9:00 Manganese-54 -7.03E+OO 3.40E+Ol N/A pCi/kg u 7/25/2017 9:00 lron-59 3.09E+OO 8.21E+Ol N/A pCi/kg u 100

7/25/2017 9:00 Cobalt-58 -l.36E+OO 3.76E+Ol N/A pCi/kg u 7/25/2017 9:00 Cobalt-60 2.19E+Ol 4.37E+Ol N/A pCi/kg u 7/25/2017 9:00 Zinc-65 -l.03E+Ol 8.37E+Ol N/A pCi/kg u 7/25/2017 9:00 Zirconium-95 -2.36E+OO 7.00E+Ol N/A pCi/kg u 7/25/2017 9:00 Niobium-95 -8.04E+OO 3.49E+Ol N/A pCi/kg u 7/25/2017 9:00 lodine-131 -6.73E+OO 7.07E+Ol 6.00E+Ol pCi/kg DLU 7/25/2017 9:00 Cesium-134 . l.06E+Ol 4 .35E+Ol 6.00E+Ol pCi/kg u 7/25/2017 9 :00 Cesium-137 -l.18E+Ol 3.76E+Ol 8.00E+Ol pCi/kg u 7/25/2017 9:00 Barium-140 -6.18E+Ol l.92E+02 N/A pCi/kg u 7/25/2017 9:00 Lanthanum-140 -3 .83E+OO 6.85E+Ol N/A pCi/kg u 8/29/2017 8:45 Beryllium-7 7.97E+03 l.37E+02 N/A pCi/kg 8/29/2017 8:45 Potassium-40 6.06E+02 l.45E+02 N/A pCi/kg 8/29/2017 8:45 Manganese-54 -2 .0lE+OO l.29E+Ol N/A pCi/kg u 8/29/2017 8:45 lron-59 -l.53E+Ol 2.89E+Ol N/A pCi/kg u 8/29/2017 8:45 Cobalt-58 -9 .77E+OO l.52E+Ol N/A pCi/kg u 8/29/2017 8:45 Cobalt-60 5.88E-01 l.59E+Ol N/A pCi/kg u 8/29/2017 8:45 Zinc-65 -2 .13E+Ol 2.91E+Ol N/A pCi/kg u 8/29/2017 8:45 Zirconium-95 5.67E+OO 2.89E+Ol N/A pCi/kg u 8/29/2017 8:45 Niobium-95 2.63E+OO l.52E+Ol N/A pCi/kg u 8/29/2017 8:45 lodine-131 -l.13E+Ol 5.40E+Ol 6.00E+Ol pCi/kg u 8/29/2017 8:45 Cesium-134 4 .42E+OO l.54E+Ol 6.00E+Ol pCi/kg u 8/29/2017 8:45 Cesium-137 5.56E+OO l.48E+Ol 8.00E+Ol pCi/kg u 8/29/2017 8:45 Barium-140 -l.50E+Ol l.08E+02 N/A pCi/kg u 8/29/2017 8:45 Lanthanum-140 l.70E+Ol 4.45E+Ol N/A pCi/kg u 9/26/2017 8:45 Beryllium-7 3.45E+03 2.56E+02 N/A pCi/kg 9/26/2017 8:45 Potassium-40 2.51E+03 3.19E+02 N/A pCi/kg 9/26/2017 8:45 Manganese-54 -1.43E+OO 2.73E+Ol N/A pCi/kg u 9/26/2017 8:45 lron-59 2.89E+Ol 8.73E+Ol N/A pCi/kg u 9/26/2017 8:45 Cobalt-58 3.42E+OO 3.41E+Ol N/A pCi/kg u 9/26/2017 8:45 Cobalt-60 l.19E+Ol 4 .81E+Ol N/A pCi/kg u 9/26/2017 8:45 Zinc-65 -l.24E+Ol 7.18E+Ol N/A pCi/kg u 9/26/2017 8:45 Zirconium-95 -l.16E+Ol 5.71E+Ol N/A pCi/kg u 9/26/2017 8:45 Niobium -95 -9.30E-01 3.59E+Ol N/A pCi/kg u 9/26/2017 8:45 lodine-131 -4.02E+Ol 5.04E+Ol 6.00E+Ol pCi/kg u 9/26/2017 8:45 Cesium-134 -4.95E-Ol 4 .00E+Ol 6.00E+Ol pCi/kg u 9/26/2017 8:45 Ces ium- 137 -1.40E+OO 3.04E+Ol 8.00E+Ol pCi/kg u 9/26/2017 8:45 Barium-140 -1.40E+Ol l.42E+02 N/A pCi/kg u 9/26/2017 8:45 Lanthanum-140 -l.87E+Ol 3.44E+Ol N/A pCi/kg u 10/31/2017 13:54 Beryllium-7 3.45E+03 2.45E+02 N/A pCi/kg 10/31/2017 13:54 Potassium-40 l.72E+03 2.39E+02 N/A pCi/kg 10/31/2017 13:54 Manganese-54 -9.99E+OO l.68E+Ol N/A pCi/kg u 10/31/2017 13:54 lron-59 -2.50E+Ol 6.41E+Ol N/A pCi/kg u 10/31/2017 13:54 Cobalt-58 l.20E+OO 3.04E+Ol N/A pCi/kg u 10/31/2017 13:54 Cobalt-60 -3.12E+OO 2.92E+Ol N/A pCi/kg u 10/31/2017 13:54 Zinc-65 2.0lE+OO 6.64E+Ol N/A pCi/kg u 10/31/2017 13:54 Zirconium-95 l.38E+Ol 6.16E+Ol N/A pCi/kg u 10/31/2017 13:54 Niobium-95 -l.28E+OO 3.34E+Ol N/A pCi/kg u 101

10/31/2017 13:54 lodine-131 3.43E+OO 5.29E+Ol 6.00E+Ol pCi/kg u 10/31/2017 13:54 Cesium-134 4.23E+OO 3.SSE+Ol 6.00E+Ol pCi/kg u 10/31/2017 13:54 Cesium-137 l.33E+Ol 3.42E+Ol 8.00E+Ol pCi/kg u 10/31/2017 13:54 Barium-140 -l.92E+Ol 1.44E+02 N/A pCi/kg u 10/31/2017 13:54 Lanthanum-140 -4.87E+OO 4.46E+Ol N/A pCi/kg u 11/28/2017 8:05 Beryllium-7 8.15E+03 l.77E+02 N/A pCi/kg 11/28/2017 8:05 Potassium-40 2.29E+03 l.82E+02 N/A pCi/kg 11/28/2017 8:05 Manganese-54 l.94E+Ol l.99E+Ol N/A pCi/kg u 11/28/2017 8:05 lron-59 4.09E+OO 4 .lSE+Ol N/A pCi/kg u 11/28/2017 8:05 Cobalt-58 4.53E+OO 2.13E+Ol N/A pCi/kg u 11/28/2017 8:05 Cobalt-60 l.33E+Ol 2.29E+Ol N/A pCi/kg u 11/28/2017 8:05 Zinc-65 -2.90E+Ol 4.57E+Ol N/A pCi/kg u 11/28/2017 8:05 Zirconium-95 l.OSE+OO 3.63E+Ol N/A pCi/kg u 11/28/2017 8:05 Niobium-95 8.45E+OO 2.26E+Ol N/A pCi/kg u 11/28/2017 8:05 lodine-131 -7.84E+OO 3.25E+Ol 6.00E+Ol pCi/kg u 11/28/2017 8:05 Cesium-134 -l.03E+Ol 2.14E+Ol 6.00E+Ol pCi/kg u 11/28/2017 8:05 Cesium-137 5.64E+OO 2.lSE+Ol 8.00E+Ol pCi/kg u 11/28/2017 8:05 Barium-140 4 .0lE+Ol l.03E+02 N/A pCi/kg u 11/28/2017 8:05 Lanthanum-140 -5.09E+OO 2.84E+Ol N/A pCi/kg u 12/26/2017 9:27 Beryllium-7 8.64E+03 2.57E+02 N/A pCi/kg 12/26/2017 9:27 Potassium-40 l.37E+03 3.01E+02 N/A pCi/kg 12/26/2017 9:27 Manganese-54 8.89E+OO 3.75E+Ol N/A pCi/kg u 12/26/2017 9 :27 lron-59 l.94E+Ol 5.89E+Ol N/A pCi/kg u 12/26/2017 9 :27 Cobalt-58 -6.82E+OO 3.20E+Ol N/A pCi/kg u 12/26/2017 9:27 Cobalt-60 6.68E+OO 2.90E+Ol N/A pCi/kg u 12/26/2017 9:27 Zinc-65 -l.60E+Ol 5.92E+Ol N/A pCi/kg u 12/26/2017 9:27 Zirconium-95 -l.02E+Ol 5.44E+Ol N/A pCi/kg u 12/26/2017 9:27 Niobium-95 l.18E+Ol 3.31E+Ol N/A pCi/kg u 12/26/2017 9:27 lodine-131 6.79E+OO 3.78E+Ol 6.00E+Ol pCi/kg u 12/26/2017 9 :27 Cesium-134 -l.02E+OO 3.46E+Ol 6.00E+Ol pCi/kg u 12/26/2017 9:27 Cesium-137 -6.0lE+OO 3.43E+Ol 8.00E+Ol pCi/kg u 12/26/2017 9:27 Barium-140 4.57E+Ol l.27E+02 N/A pCi/kg u 12/26/2017 9:27 Lanthanum-140 -4.84E-01 4.08E+Ol N/A pCi/kg u 102

K. Conclusions Based on the results presented in this report and from comparisons with the pre-operational and operational program results from previous years, it can be concluded that the impact of Comanche Peak on the environment is minimal.

The only indication directly attributable to Comanche Peak is the tritium detected in Squaw Creek reservoir.

Gross beta trend indications concerning Squaw Creek Reservoir are consistent with previous values and do not indicate any increase due to influence from Comanche Peak. Future data will be evaluated as it is received and will be addressed as necessary.

The tritium in Squaw Creek reservoir is reaching equilibrium and is expected to remain well below the reportable level.

Clarifying Note: In the 2014 Report a transcription errors were identified after completion, the 2013 maximum/minimum values for gross beta was used instead of the 2014 maximum/minimum values of 1.34E-O 1 and 1.85E-02.

Additionally, in the 2016 maximum gross beta was reported as 1.09E-01 but the highest value on the graph and table is 1.25 E-01. These are typographical errors and these do not affect any offsite dose calculations as these values are well below CPNPP ODCM action limit for gross beta or any regulatory limit established by the NRC. These errors were captured in the CR-2017-013565 There were no values reported during the year 2017 that exceeded any NRC reportable limit.

L. Inter Laboratory Comparison and Cross Check Program GEL Laboratories LLC GEL Laboratories LLC is the independent contract laboratory that processes the radiological environmental monitoring samples collected by CPNPP. The contract laboratory is required to participate in an Interlaboratory Comparison Program in accordance with the ODCM Control 3.12.3. GEL participates in multiple programs to ensure all environmental media sent to them are analyzed to the proper standards.

GEL Laboratories, LLC (GEL) is a privately owned environmental laboratory.

GEL was established as an analytical testing laboratory in 1981. Now a full service lab, their analytical divisions use state of the art equipment and methods to provide a comprehensive array of organic, inorganic, and radiochemical analyses.

103

GEL administers the QA program in accordance with the Quality Assurance Plan, GL-QSB-001. Their Quality Systems include all quality assurance (QA) policies and quality control (QC) procedures necessary to plan, implement, and assess the work they perform. GEL' s QA Program establishes a quality management system (QMS) that governs all of the activities of their organization.

GEL Laboratories NUPIC Audit Summary The NUPIC Audit was conducted at GEL Laboratories, 2040 Savage Road, Charleston, SC 29407 during the time period of October l 7th-2 l st, 2016. A Technical Specialist, conducted tours, observations, interviews, reviewed Standard Operating Procedures, and reviewed data. Radiochemical, Radiation Environmental Monitoring Program (REMP), Radiological Effluent, and Ground Water analyses were observed in the various laboratories. Previous Technical Audit reports from GEL were reviewed prior to the audit visit.

Recommended actions or deltas from previous audits were pursued during this visit to see how GEL had reconciled these previously identified issues. Additionally, known deviations (data error reports) in data reporting from working through with GEL through EnRad Laboratories were a topic of interest. GEL's Quality Assurance Plan is designed to comply with the specifications outlined in the following NUPIC recognized documents: ANSI N42.23-l 996 Measurement and Associated Instrument Quality Assurance for Radiobioassay Laboratories, 10 CFR Part 21 - Reporting of Defects and Noncompliance, 10 CFR Part 50 Appendix B - Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants, 10 CFR Part 61 -

Licensing Requirements for Land Disposal of Radioactive Waste, NRC Reg Guide 4.8, and NRC Reg Guide 4.15. At the conclusion of the technical audit, it was found that GEL is in compliance with the quality control standards imposed by the above regulations and those of their Quality Assurance Plan and Standard Operating Procedures.

Technical Specialist Conclusion The results of this audit were discussed during the Exit Meeting on October 21st, 2016. It was found that GEL is in compliance with the quality control standards imposed by the specifications outlined in the following NUPIC recognized documents: ANSI N42.23-1996 - Measurement and Associated Instrument Quality Assurance for Radiobioassay Laboratories, 10 CFR Part 21 - Reporting of Defects and Noncompliance, 10 CFR Part 50 Appendix B -

Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants, 10 CFR Part 61 - Licensing Requirements for Land 104

Disposal of Radioactive Waste, NRC Reg Guide 4.8, and NRC Reg Guide 4.15, and the requirements of their Quality Assurance Plan and their Standard Operating Procedures.

105

Appendix A Comanche Peak Nuclear Power Plant Land Use Census 2017 COMANCHEPEAKNUCLEARPOWERPLANT

LAND USE CENSUS 2017 The Land Use Census identified receptors within a five (5) mile radius of the plant in each of the sixteen (16) meteorological sectors. The Land Use Census was conducted August 1-4, 2016 and includes the following items:

1. Evaluation of the 2016 Land Use Census

2. Nearest Resident by Sector, Distance, X/Q and D/Q

3. J Nearest Garden by Sector, Distance and D/Q

4. Nearest Mille Animal by Sector, Distance and D/Q

5. Population by Sector and Distance

6. Environmental Sample Locations Table

7. Environmental Monitoring Locations Map - 2 Mile Radius

8. 5 Mile Sector and Road Map with Field Data*

9. Environmental Monitoring Locations Map - all sample locations*

These maps are vaulted along with this census. Copies of this census will not contain a copy of these maps unless spec_ifically requested.

2

Evaluation of the 2017 Land Use Census The results of the 2017 Land Use Census were reviewed for impact on the Radiological Environmental Monitoring Program (REMP). The specific areas reviewed, that could be affected by changes found in the land use census, were the sampling requirements for milk, broad.leaf vegetation and food products.

Reviewing the milk sampling requirements from the ODCM Table 3.12-1 requires that samples are to be obtained from milking animals in three locations within a 5 km distance having the highest potential dose. If none are available, samples are acceptable from milking animals in locations 5 to 8 km distance where doses are calculated to be greater than 1 mRem per year. A sample is also required at a control location. There are currently no identified milking animals (cow or goat) within the specified distances therefore; there are no current milk samples during the year 2017.

If no milk samples are available, the broad.leaf vegetation sampling specified in ODCM Table 3.12-1 will be performed. Broad.leaf sample requirements are such that samples of broad.leaf vegetation are to be collected from each of two offsite locations of the highest predicted annual average D/Q if milk sampling is not performed at all the required locations. Currently, broad.leaf vegetation samples are collected at two indicator locations (N - 1.45 and SW - 1.0) and one control location (SW - 13.5). These indicator locations are near the site boundary in sectors where broad.leaf vegetation is available and D/Q is high. Therefore, no change to the broadleaf sampling program is required.

Food product sample requirements of ODCM Table 3.12-1 requires that one sample of each principal class of food product be collected from any area that is irrigated with water in which liquid plant waste has been discharged. Of the gardens identified in the land use census, no gardens are located in any area that irrigates with water in which liquid plant wastes are discharged.

Currently. food products are sampled from two locations (ENE - 9.0) and (E-4.2) when in season.

The location* ENE-9.0 is for pecans at time of harvest and location E-4.2 will continue to be a major source of food products sold to the public.

The location E-4.2 had tomatoes and cucumbers which were collected from this location as a conservative measure. This garden does not meet the ODCM Table 3.12-1 requirements because the products are not irrigated by water in which liquid plant wastes have been discharged.

3

Calculated values for the associated X/Q and D/Q values for each controlling receptor location and pathway are included along with the receptor distances in the data tables of this land use census. The values used to determine potential dose due to radioactive effluent discharges are the highest calculated values based on annual average values. The following values are based on the original pre-operational and subsequent Comanche Peale 3 and 4 new build calculations which identified predominant wind direction, structures affecting potential release patterns, and area population. The annual average X/Q used for dose calculations is 3.30E-6, tritium X/Q is 4.36E-6, and the D/Q value is 3.34 E-8. All these values are conservative based on the 2017 Land Use Census data and therefore no changes are required in the dose calculation parameters as verified by the field data.

XIQ units are Sec/cubic meter

DIQ units are inverse square meters 4

Nearest Resident by Sector, Distance, X/Q and D/Q Sector Distance (Miles) X/Q D/Q N 2.6 6.39E-07 3.SOE-09 NNE 2.5 4.20E-07 2.00E-09 NE 2.5 2.90E-07 1.00E-09 ENE 2.6 2.20E-07 5.77E-10 E 2.5 2.70E-07 5.80E-10 ESE 2.2 4.02E-07 9.00E-10 SE 2.0 7.lE-07 2.80E-09 SSE 1.5 1.lOE-06 6.60E-09 s 1.5 8.SOE-07 5.20E-09 SSW 1.8 5.04 E-7 2.42 E-9 SW 0.8 3.56E-06 1.85E-08 WSW 0.8 3.92E-06 l.63E-08 w 1.6 7.64E-07 2.SOE-09 WNW 2.5 4.70E-07 l.40E-09 NW 4.8 2.52E-07 6.20E-10 NNW 2.2 l.12E-06 5.16E-09 Note: The Annual Average X/Q used for dose calculations is 3.30E-06 sec/cubic meter.

The Tritium value X/Q used for dose calculations is 4.36E-06 sec/cubic meter.

The Annual Average D/Q used for dose calculations is 3.34E-08 inverse square meters.

5

Nearest Garden by Sector, Distance and D/Q Sector Distance (Miles)* D/Q N None None NNE None None NE None None ENE None None E 4.2 2.00E-10 ESE None None SE None None SSE None None s None None SSW None None SW None None WSW None None w None None WNW None None NW None None NNW None None 6

Nearest Milk Animal by Sector, Distance and D/Q Sector Distance (Miles)* D/Q N None None NNE None None NE None None ENE None None E None None ESE None None SE None None SSE None None s None None SSW None None SW None None WSW None None w None None WNW None None NW None None NNW None None

No Mille samples are currently being collected.

7

Population by Sector and Distance Sector 0-1 1-2 2-3 3-4 4-5 Total N - - 12 71 107 190 NNE - - 8 71 56 135 NE - - 167 169 293 629 ENE - - 107 27 20 154 E - - 177 198 34 409 ESE - - 85 107 147 339 SE - - 202 404 109 715 SSE - 96 130 109 2562 2897 s - 30 123 59 297 509 SSW - 6 8 8 70 92 SW 8 104 8 85 51 256 WSW 36 157 8 6 - 207 w - 103 10 17 12 142 WNW - - 13 52 136 201 NW - - - - 7 7 NNW - - 5 44 49 98 TOTAL 44 496 1063 1428 3949 6980 The average number of residents per house was obtained from North Central Texas Council of Governments for Hood and Somervell Counties. The number of residents per house is 2.44 and 2.80, respectively. (h1tp://www.indcxmundi.com/facts/unitcd-statcs/quick-facls/tcxas/avcrnge-houschold-sizc#table

8

Environmental Sample Locations Table Sampling Point Location Sample Type*

Al N-1.45 (Squaw Creek Park) A A2 N-9.4 (Granbury) A A3 E-3.5 (Children's Home) A A4 SSE-4.5 (Glen Rose) A A5 S/SSW-1.2 A A6 SW-12.3 (CONTROL) A A7 SW/WSW-0.95 A AS NW-1.0 A Rl N-1.45 (Squaw Creek Park) R R2 N-4.4 R R3 N-6.5 R R4 N-9.4 (Granbury) R R5 NNE-1.1 R R6 NNE-5.65 R R7 NE-1.7 R RS NE-4.8 R R9 ENE-2.5 R RIO ENE-5.0 R Rll E-0.5 R R12 E-1.9 R Rl3 E-3.5 (Children's Home) R R14 E-4.2 R Rl5 ESE-1.4 R Rl6 ESE-4.7 R R17 SE-1.3 R RlS SE-3.SS R 9

Environmental Sample Locations Table (cont)

Sampling Point Location Sample Type*

Rl9 SE-4.6 R R20 SSE-1.3 R R21 SSE-4.4 (Glen Rose) R R22 SSE-4.5 (Glen Rose) R R23 S-1.5 R R24 S-4.2 R R25 SSW-I.I R R26 SSW-4.4 (State Park) R R27 SW-0.9 R R28 SW-4.8 (Girl Scout Camp) R R29 SW-12.3 (CONTROL) R R30 WSW-1.0 R R31 WSW-5.35 R R32 WSW-7.0 (CONTROL) R R33 W-1.0 R R34 W-2.0 R R35 W-5.5 R R36 WNW-1.0 R R37 WNW-5.0 R R38 WNW-6.7 R R39 NW-LO R R40 NW-5.7 R R41 NW-9.9 (Tolar) R R42 NNW-1.35 R R43 NNW-4.6 R 10

Environmental Sample Locations Table (cont.)

Sampling Point Location Sample Type*

SWl N-1 .5 (Squaw Creek Reservoir Marina) SW SW2 N-9.9 (Lake Granbury) SW/DW 1 SW3 N-19.3 (CONTROL-Brazos River) SW SW4 NE-7.4 (Lake Granbury) SW SW5 ESE-1.4 (Squaw Creek Reservoir) sw2 SW6 NNW-0.1 (Squaw Creek Reservoir) SW/Dw2. 3 GWI W-1.2 (Security Rifle Range) GW7 GW2 WSW~O.l (Somerville Water district) Gw3,4,6 GW3 SSE-4.6 (Glen Rose- Somerville Water District) GW4 GW4 N-9.8 (Granbury) Gwi,4.6 GW5 N-1.45 (Squaw Creek Park) GW 4 SS1 NNE-1.0 (Squaw Creek Reservoir) ss SS2 N-9.9 (Lake Granbury) ss SS3 NE-7.4 (Lake Granbury) ss SS4 SE-5.3 (Squaw Creek) ss Fl ENE-2.0 (Squaw Creek Reservoir) F F2 NNE-8.0 (Lake Granbury) F FPl ENE-9.0 (Leonard Bros. Pecan Fann) FP 11

Environmental Sample Locations Table (cont.)

Sampling Point Location Sample Type*

BLl N-1.45 BL BL2 SW-1.0 BL5 BL3 SW-13.5 (CONTROL) BL5

Sample Type: A - Air Sample; R - Direct Radiation; SW - Surface Water; DW - Drinking Water GW - Ground Water; SS - Shoreline Sediments; M - Milk; F - Fish; FP - Food Products; BL - Broadleaf Vegetation NOTES:

1. The municipal water system for the ~ity of Granbury is supplied by surface water from Lake Granbury (location SW2) and ground water (location GW4 ). Each of these supplies is sampled. These samples are not required for compliance with Radiological Effluent Control 3/4.12.1, Table 3.12-1, because they are not affected by plant discharges.

2. This sample (location SW6) is representative of discharges from Squaw Creek Reservoir both down Squaw Creek and to Lake Granbury via the return line to Lake Granbury if used.

3. Plant potable water could be supplied by surface water from Squaw Creek Reservoir (location SW6) or ground water from onsite wells (location GW2) but is currently supplied by the Somerville County Water District from the Wheeler Branch Reservoir.

Each of these possible sources of water were sampled.

4. Ground water supplies in the plant site area are not affected by plant liquid effluents as discussed in CPSES FSAR Section 2.4.13. However, they are monitored for radioactivity IAW the requirements of the Radiological Effluent Control 3/4.12.1, Table 3.12-1.

5. Broadleaf sampling will be performed at the specified locations if milk samples are unavailable from any location.

6. Plant Potable Water (GW2) and Glen Rose (GW3) are supplied from surface water by the Somerville Water District from the Wheeler Branch Reservoir.

7. CPNPP Security Rifle Range (GWl) is supplied by a local Well.

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Environmental Samplt! Locations :\-fap - 2 l',lik Radius 13

CP-201700227, Transmittal of 2017 Radiological Environmental Operating Report

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CP-201700227, Transmittal of 2017 Radiological Environmental Operating Report

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