ML17135A333

Annual Radiological Environmental Operating Report

ML17135A333
Person / Time
Site:	Calvert Cliffs
Issue date:	05/11/2017
From:	Laura Smith Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML17135A333 (102)

Text

Larry 0 . Smith Exelon Generation Manager-Regulatory Assurance Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby. MD 20657 410-495-5219 Office www.exeloncorp .com Larry.sm1th2@exeloncorp.com May 11, 2017 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Calvert Cliffs Nuclear Power Plant; Unit Nos. 1 & 2; Renewed Facility Operating License Nos. DPR-53 and DPR-69 Docket Nos. 50-317 & 50-318 Independent Spent Fuel Storage Installation; Material License No. SNM-2505 NRC Docket No. 72-8

Subject:

Annual Radiological Environmental Operating Report

References:

1. Calvert Cliffs Nuclear Power Plant Technical Specification 5.6.2

2. Calvert Cliffs Independent Spent Fuel Storage Installation Technical Specification 6.2 In accordance with References 1 and 2, Calvert Cliffs Nuclear Power Plant is submitting the Annual Radiological Environmental Operating Report (Attachment 1).

There are no regulatory commitments contained in this correspondence.

Should you have questions regarding this matter, please contact me at (410) 495-5219 or Ms. Brittney O'Connor at (410) 495-4913.

J};'~

for Larry D. Smith Manager-Regulatory Assurance LDS/PSF/bjm

Attachment:

(1) Annual Radiological Environmental Operating Report for the Calvert Cliffs Nuclear Power Plant Units 1 and 2 and the Independent Spent Fuel Storage Installation cc : NRC Project Manager, Calvert Cliffs NRC Resident Inspector, Calvert Cliffs NRC Regional Administrator, Region I S. Gray, MD-DNR

ATTACHMENT (1)

ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR THE CALVERT CLIFFS NUCLEAR POWER PLANT UNITS 1AND2 AND THE INDEPENDENT SPENT FUEL STORAGE INSTALLATION Calvert Cliffs Nuclear Power Plant May 11, 2017

ANNUAL RADIOLOGICAL ENVIRONMENT AL OPERATING REPORT FOR THE CAL VERT CLIFFS NUCLEAR POWER PLANT UNITS 1AND2 AND THE INDEPENDENT SPENT FUEL STORAGE INST ALLATI ON January 1 - December 31 , 2016 A. M. Barnett R. V. Ihnacik EXELON GENERATION, LLC MAY 2017

January I - December 31 , 2016 Docket Nos. 50-317 /50-318/72-8 TABLE OF CONTENTS LIST OF FIGURES .... ... ... ....... ....... .... .... ................. ..... ... .... ....... ........ .... .. ... ..... ... ............................... ii LIST OF TABLES ..... ..... ........... .... ........ ....... ............... ............... ..... ..... ........ .... ... ......... ..................... iii LIST OF TABLES ...... .................... .... ................. ......... ......... ..... ........ .. ............ ........ ...... ............ ... .... vi I.

SUMMARY

... ...... ....... ...... ..... ..... .......... ................. ...... .... ..... .. ........... ..... ... ... ... ........... ... ......... ....... .... I II. CALVERT CLIFFS NUCLEAR POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM .. ......... ....... ... ...... .... .......... .. ....... ...... .. ..3 II.A. INTRODUCTION ... ............ ........ .. ................ ....... ...... ... ......... ........ ........................ ...... ..... .... ............. .. ................ 3 11.B. PROGRAM .. ... .... ... .................. ...... ... .................... ........... ................. .............. ...... ... ...................................... .... ... 3 11.B. 1 Objectives ............... ........ ........ ... .... ... ......... ..... ....... ..... ... ...... .................... ..... ..... ... .. ..... .... ............. ................ . 3 11.B.2 Sample Collection ..... .. .................... ... ............. ......................... ........... ..... ........ .. ... ..... ............ ......... ............... 4 11.B.3 Data lnterpretation ... .. ................. ............. ...... .................. ...................... ........... ........... .. ..... .... ... .. ..... .. ......... 4 11.B.4 Program Exceptions .......... ....... .. ..... ................ .......... ... ....... .. ........ ....... ... .. .. ........ .. .......... .... ..... ..... ........ ........ 4 11.C. RES UL TS AND DI SCUSS IONS ..... .. .. ..... .................. ........ .... .... ........... ..... ...... .... .. ...... ............... ......................... 4 11.C. 1 Aquatic Environment ................... ................. .......... ... ............................. .. ........ ..... ..... .... ............... ........ ....... 4 11.C.1.a Bay Water ......... .......... .... ........................ ..... ..... ... ......... ... ...... ........... ................... ........ .. ..... ......... ...... ....... ... 5 11.C. l.b Aquatic Organisms .. ....... ...... ..... ............ ................. ......... .... ... ... ... ... .. ... .... .... ..... ........... .............. ... ...... ....... 5 11.C.1.c Shoreline Sediment ... ........ ........ .. ........ .. ...... ............. .... ............... ....... ........ .. ... .... .... .... ..... ...... ....... ....... ....... 5 11.C.2 Atmospheric Environment ... .. ... .......... ... ......... ...... .. .. ..... .............. .. ..... .. ..... .. .. ... ........... .. ... .... .... ...... ....... .. .... 8 11.C.2.a Air Particulate Filters ....... .. .......... .... ........ ..... ............. .. ...... ............ .... ........ ..... ........ ........................... ... .. .. 8 11.C.2.b Air Iodine ......... .. ... .. ....... .............. .. ........... ........... ..... ..... ....... ........... .. ...... ....... ... .......... ............... ...... ......... 8 11.C.3 Terrestrial Environment ..... ............ ..... .. ...... ........... ... ..... .. ... .... ........ ..... .... .... ...... .... .. ...... ... ................ ....... 10 11.C.3.a Vegetation ..... ....... ..... .......... ............ ...... .. .... ..... .... ... ..... ............ .. ........... ... ......... ........ .. ....... .... .. ... ..... .... .... . 10 11.C.4 Direct Radiation ....... ... ......... ....... ................. ......... ... .................... ... ... ... ............. .. ......... ....... .......... .... ..... .... I 0 11.D. CONCLUSION ....... .. .......... ............ .. ............... ......... ...... ..... ......... .... ..... ... .. .... ............ .................... ...... ....... .. .. ... . 12 III. INDEPENDENT SPENT FUEL STORAGE INSTALLATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ... ....... ..... ..... ... .......... .. ................ ....... 18 Ill.A. INTRODUCTION ... ... .. ............ ....... .. .. .. ...................... ....... ... ............... .. ................................ ... ... .... ........ .......... 18 111.B. PROGRAM ... .................. ... ....................... .... ................. ........ .. ................. .... ...... ..... ..... ...... .... ... ...... ....... .. ...... .... 18 111.B.1 Objectives .... .. ............ .................... ... ... ...... ........ ... .................... .. ...... ..... .. .... .. ... .... ............... .... ................... 18 111.B.2 Sample Collection .. ..... .... ..... ...... .............. ...... ... ......... ........... .. ................ ... .. .... ... .. .... .... .............. ...... ..... .. .. 19 111.B.3 Data Interpretation ......... ... ... ...... .................. ... .... ........ .............. .. ......... ......... ............. .... ...... ......... ........... 19 111.B.4 Program Exceptions ...... ...... ..... .. ....... ...................... ..... ..... .... ..... ............. .... ....... ....... ... .............. ........... ... . 19 lll.C. RES UL TS AND DISCUSSIONS ......... ..... ...... .... ..... .............. ........ ...... ......... ..... .... ............... ....... ...... ....... .. ..... . 19 111.C.1 Atmospheric Environment .......... ............ ...... ... ... ...... ......... .. ..... .... .. .................................... ...... .......... ..... 19 111.C.1.a Air Particulate Filters ......... ........... ...... ......... .. ............ .... ............... .. ..... ................. ......... ... .... .... ............ 19 111.C.2 Terrestrial Environment ...... .... ......... ........ .. ........ ..... ........... ................ .... .. .......... .. ..... ...... ..... ... .. ........ ...... 20 111.C.2.a Vegetation ... ........ ... ...... ......... ...................... .... ... .. ........ ...... ....... ..... ... ... ................. ......... ...................... ... 20 111.C.2.b Soils ........ .......... .... .... ....... .... .. .. ..... ........ ........................... .... ... ................ ....... ... .. ... ..... ......... .......... ......... . 20 111.C.3 Direct Radiation ..... ......... ... ... ...................... .... ... .. ................... .. ..... ................... ....... ......................... ........ 20 111.D. CONCLUSION ............... ... ..... .... ......... ......... ... .......... .. ............ ......... ......... ....... .. .. ........ ............................ ..... ..... 2 1 IV. REFERENCES .. ..... ...... ..... ... ..... .. .................... ....... ..... ....... .. ........ ..... ...... .... ....... ..... ... ................. 25 APPENDIX A Sample Locations for the REMP and the ISFSI.. .. .. .. ............ ........... .................. .. 26 APPENDIX B Analysis Results for the REMP and the ISFSI ...... .... ........... ........... ................ ..... 36 APPENDIX C Quality Assurance Program ........ ......... .................... ....... ......... ... ....... ... .. ..... .. .... .... 58 APPENDIX D Land Use Survey .. .............. ....... .................... .... ...... ..... ....................................... ..... 77 APPENDIX E Additional Samples and Analysis Results ..... ........ ............ .. ... .. .... .... ..... .. .......... ... .78

January 1 - December 31, 2016 Docket Nos. 50-317/50-318/72-8 LIST OF FIGURES Figure Title Page 1 Tritium in Chesapeake Bay Water .......................................... .... .......... .... .... .................. .......... .6 2 Silver-11 Om and Potassium-40 in Chesapeake Bay Oysters .................... ...... .......................... 7 3 Nuclear Fallout in the Calvert Cliffs Area .............................. ................ .................. .. .... ........... 9 4 Mean TLD Gamma Dose, Calvert Cliffs Nuclear Power Plant.. .............. .... .... .. .. .... .............. .11 5 Atmospheric Dispersion Around CCNPP Average Relative Air Concentrations (X/Q) ......... 14 6 Atmospheric Dispersion Around CCNPP Average Relative Ground Deposition (D/Q) .... .... 15 7 Mean TLD Gamma Dose, ISFSI ........................ .......................................... .. ......................... 22 A-1 Map of Southern Maryland and Chesapeake Bay Showing Location of Calvert Cliffs Nuclear Power Plant .................................................. .................... ........ ....... .. ........ ........ ...... ... 30 A-2 Calvert Cliffs Nuclear Power Plant Sampling Locations, 0-2 Miles ...... .. ...... ...... .... ........ ....... 31 A-3 Calvert Cliffs Nuclear Power Plant Sampling Locations, 0-10 Miles ............................ ......... 32 A-4 Independent Spent Fuel Storage Installation Sampling Locations ........ .... .. .............. ............. .34 A-5 Enlarged Map of the Independent Spent Fuel Storage Installation Sampling Locations ........ 35 E-1 Site Map Groundwater Monitoring Wells ........................ ...................... ... .............................. 94 E-2 Site Map RW Locations .......... ........... .......... ........ ... ................. .... ........................ ... ....... .. .. ...... 95 ii

January 1 - December 3 1, 2016 Docket Nos. 50-317/50-318/72-8 LIST OF TABLES Table Title Page Synopsis of 2016 Calvert Cliffs Nuclear Power Plant Radiological Environmental Monitoring Program ................................................................................................................. 16 2 Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant Units 1 and 2 ................ ........... ......... .......... ............................................ ......................... 17 3 Synopsis of 2016 Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation Radiological Environmental Monitoring Program .... ..... .. ... ......................... ... ..... 23 4 Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation .................... .... .......... ................. ............... 24 A-1 Locations of Environmental Sampling Stations for the Calvert Cliffs Nuclear Power Plant .. 28 A-2 Locations of Environmental Sampling Stations for the Independent Spent Fuel Storage Installation at Calvert Cliffs ..... ..... ............................................. ..... ............... .... ........ ......... ....33 B-1 Concentration of Tritium and Gamma Emitters in Bay Water ...... ... .......... .............................38 B-2 Concentration of Gamma Emitters in the Flesh of Edible Fish ..... .......................................... 39 B-3 Concentration of Gamma Emitters in Oyster Samples ...... .... ........... ........ ... .......................... ..40 B-4 Concentration of Gamma Emitters in Shoreline Sediment.. ........................ ......................... .. .41 B-5 Concentration oflodine-131 in Filtered Air .............................................. ................... ... ... .... .42 B-6 Concentration of Beta Emitters in Air Particulates ...... ..... ........................... ..... .... ...... ............ .44 B-7 Concentration of Gamma Emitters in Air Particulates ............ .... ... ...... ..... ... ....................... ... .48 B-8a Concentration of Gamma Emitters in Vegetation Samples ........... ...... ..... .... ... ... ......... .... .. .. ... .49 B-8b Concentration of Gamma Emitters in Vegetation From Locations Around the ISFSI.. .. ........ 50 B-9 Concentration of Gamma Emitters in Soil Samples From Locations Around the JSFSI ....... .51 B-10 Typical MDA Ranges for Gamma Spectrometry .. ........... .... ............... ......... ....................... .... 52 B-11 Typical LLDs for Gamma Spectrometry ....... ..... .............. .... ............. ... ..... .. ....................... ..... 53 B-12 Direct Radiation .......... .................. ..... .................... ... ...... .. ....................................................... 54 C-1 Results of Participation in Cross Check Programs .................................... .. ....................... ..... 59 C-2 Results of Quality Assurance Program ... .... ......... ... ...... ....... ............. .. ...................... ....... .... .... 62 C-3 Teledyne Brown Engineering' s Typical MDAs for Gamma Spectrometry ........................ .... 74 D-1 Land Use Survey ................................................. ...... .......... ... .... ..... ... ...... .. .......... ....... ......... .... 75 E-1 Locations of Non-Tech Spec Environmental Sampling Stations for Calvert Cliffs Nuclear Power Plant ......... ... ............... ... .......... ..... ................ ............ ............... ..... ......... ... ............. ........ 78 E-2 Synopsis of2016 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environmental Monitoring Program .. ... .................. ... ... .......... ........... .... ....... .... ............... ........ 79 E-3 Annual Summary for Calvert Cliffs Nuclear Power Plant Units I & 2 Non-Tech Spec Radiological Environmental Monitoring Program ............................ ............ ...................... .... 80 E-4 Concentration of Gamma Emitters in Bottom Sediment .. ...... ..... ..... ..... ........ ... ...................... .81 E-5 Concentration of lodine-131 in Filtered Air ............. ... ..................................... .. ..................... 82 E-6 Concentration of Beta Emitters in Air Particulates .................................................................. 84 E-7 Concentration of Gamma Emitters in Air Particulates ............................................................ 86 E-8 Concentration of Tritium and Gamma Emitters in Taylors Island Well Water ... .................... 87 Ill

January 1 - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 E-9 Direct Radiation ... .. ....... ..... .. ... ................................ .... .... ....... ............. ..... ...... ................... .... .. .88 E-10 Direct Radiation from Resin Storage Area .......... .................... .... ...... ...... .. ..... ............ .......... ... 89 E-11 Concentration of Tritium in Groundwater ..................................................... .......... ........ ...... .. 90 E-12 Gross Concentration of Gamma Emitters in Groundwater ..................... .. .............. ......... ....... .92 IV

January I - December 31, 2016 Docket Nos. 50-317/50-318/72-8 I.

SUMMARY

During 2016, Calvert Cliffs Nuclear Power Plant (CCNPP) Units I and 2, a total of 3614 radiological analyses were performed and the analytical results reviewed. Most of these analyses were performed to satisfy the requirements of the Offsite Dose Calculation Manual (ODCM)

(Ref. 6), the Environmental Technical Specifications (Ref. 5) and the Independent Spent Fuel Storage Installation (ISFSI) Technical Specifications (Ref. 10). Some of these samples, although not required by either the ODCM or the Technical Specifications, were collected to maintain our commitments to the surrounding community and to maintain historical continuity of the CCNPP Radiological Environmental Monitoring Program (REMP) that started in 1970. The entire monitoring program in place around CCNPP is divided into three parts: the original REMP, the ISFSI monitoring program, and the Non-ODCM Radiological Environmental Monitoring. The following paragraphs describe each of these parts in more detail.

A total of 659 radiochemical analyses were performed on 591 environmental samples and 546 thermoluminescent dosimeters (TLDs) were analyzed for ambient radiation exposure rates as part of the original REMP. These analyses were performed to satisfy the requirements of the ODCM (Ref. 6) and the Environmental Technical Specifications (Ref. 5).

For the ISFSI monitoring program, 365 radiochemical analyses were performed on 305 environmental samples, 64 of which were in common with the original REMP. In addition, 480 TLDs, 24 in common with the original REMP, were analyzed for ambient radiation exposure rates. These analyses were performed to satisfy the requirements of the ODCM (Ref. 6) and the ISFSI Technical Specifications (Ref. I 0) .

In addition, 746 analyses were performed on 637 additional environmental samples, and 480 additional TLDs were analyzed for ambient radiation exposure rates.

And lastly, 343 radiochemical analyses were performed on 245 quality assurance samples and 132 quality assurance TLDs were analyzed as part of an internal and external quality assurance program associated with Teledyne Brown Engineering. Laboratory intercomparison samples obtained from Environmental Resource Associates (ERA) and Analytics ' Inc. were also analyzed .

Samples collected from the aquatic environment included bay water, fish , oysters, and shoreline sediment. Bay water was analyzed for tritium and gamma emitters. Fish, oysters, and shoreline sediments were analyzed for gamma emitting radionuclides .

Monitoring the atmospheric environment involved sampling the air at various locations surrounding CCNPP and the ISFSI. Air particulates and gaseous iodine were collected on glass fiber filters and charcoal cartridges, respecti ve ly. The particulate filters were analyzed for beta activity and gamma emitting nuclides . The charcoal cartridges were analyzed for airborne gaseous radioiodine .

January 1 - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Samples from the terrestrial environment consisted of vegetation and soi I samples collected and analyzed for gamma emitters. Vegetation samp les for the original REMP were also analyzed for I-131.

Measurements of direct radiation, as required by the ODCM, were performed by analyzing TLDs from forty locations surrounding CCNPP and the ISFSI.

Natural radioactivity was detected in essentially all 3340 radiological analyses performed. Low levels of man-made fission products were also observed in 7 of these analyses for the CCNPP REMP. All of these observations were attributed to fallout from past atmospheric weapons testing. Detailed discussions about the results of these ana lyses are contained in the body of this report.

To assess the plant's contribution to the radiation levels of the ambient environment, dose calculations were performed using 2016 data from the plant's effluent releases, 2016 on-site meteorological data, and appropriate pathways. The results of these dose calculations indicate:

a. a maximum thyroid dose of 6.13 x I 0-3 mrem via liquid and gaseous pathways, which is about 0.008% of the acceptable limit of 75 mrem/yr as specified in 40CFR 190 "Environmental Radiation Protection Standards for Nuclear Power Operations" and 10CFR72.104, "Licensing Requirements for the Independent Storage of Spent Nuclear Fuel and High-Level Radioactive Waste";

b. a maximum whole body dose of 3.21 x 10* 3 mrem via liquid and gaseous pathways, which is about 0.013% of the acceptable limit of 25 mrem/yr as specified in both 40CFR190 and I OCFR72.104; and

c. a max imum calculated dose to all other organs via liquid and gaseous pathways was equal to 5.80 x 10*3 mrem to the li ver. This dose is about 0.023% of the allowable limit of 25 mrem/yr as specified in both 40CFRI 90 and 10CFR72.104.

Thus, it is concluded based upon the levels of radioactivity observed and the various dose calculations performed , that CCNPP Units I and 2 and the ISFSI did not cause an y significant radiological impact on the surrounding environment.

2

January I - December 31, 2016 Docket Nos. 50-317/50-318/72-8 II. CAL VERT CLIFFS NUCLEAR POWER PLANT RADIOLOGICAL ENVIRONMENT AL MONITORING PROGRAM II.A. INTRODUCTION The REMP has been conducted in the vicinity of CCNPP since the summer of I 970. The Calvert Cliffs site is an operating nuclear generating station consisting of two pressurized water reactors.

Unit 1 achieved criticality on October 7, 1974 and commenced commercial operation in May 1975. Unit 2 achieved criticality on November 30, 1976 and went into commercial operation April 1, 1977. The location of the plant in relation to local metropolitan areas is shown on Figure A-1.

Results of the monitoring program for the pre-operational period have been reported in a series of documents (Ref. 1-4). The results from previous operational periods are contained in annual reports submitted to the Nuclear Regulatory Commission (NRC) as required.

Results of the monitoring program for the current operational period are included in this report.

The report presents the content of the REMP (Table I), the sampling locations (Appendix A), the summary of the analytical results (Table 2), a compilation of the analytical data (Appendix B),

the results of the Interlaboratory Comparison Program and the Quality Assurance Program (Appendix C), the results of the Land Use Survey (Appendix D), and a compilation of the analytical data for extra samples collected (Appendix E). Interpretation of the data and conclusions are presented in the body of the report.

The environmental surveillance data collected during this reporting period were compared with that generated in previous periods whenever possible to evaluate the environmental radiological impact of CCNPP Units 1 and 2.

11.B. PROGRAM 11.B.1 Objectives The objectives of the REMP for the Calvert Cliffs Nuclear Power Plant are:

a. To verify that radioactivity and ambient radiation levels attributable to plant operation are within the limits specified in the ODCM (Ref. 6) and the Environmental Radiation Protection Standards as stated in 40CFR 190,

b. To detect any measurable buildup of long-lived radionuclides in the environment,

c. To monitor and evaluate ambient radiation levels, and

d. To determine whether any statistically significant increase occurs in the concentration of radionuclides in important pathways.

3

January l - December 31 , 2016 Docket Nos. 50-3 I 7/50-318/72-8 11.B.2 Sample Collection The locations of the individual sampling stations are listed in Table A-1 and shown in Figures A-2 and A-3. All samples were collected by contractors to, or personnel of Exelon Generation according to CCNPP Procedures (Ref. 7, 8 and 12).

11.B.3 Data Interpretation Many results in environmental monitoring occur at or below the minimum detectable activity (MDA). In this report, all results at or below the relevant MDA are reported as being "less than" the MDA value.

11.B.4 Program Exceptions Sample A5 at the Emergency Operations Facility, was out of operation due to a power outage which required a reset of the breaker, and insufficient sample was collected due to low flow for the weeks of February 22nd to March 7th. This program exception has been entered into the site ' s Corrective Action Program to ensure it does not recur.

Direct radiation dosimeters, in the 4th quarter, were found missing from an ODCM (Ref. 6) sampling location during this operating period. Direct radiation dosimeters were missing due to the removal of the pole they were mounted on at Cove Point and Little Cove Point Roads sampling location (sample code DR 17) in the 4th quarter of this operating period . No substitute samples were collected in lieu of the samples not taken from these locations. New dosimeters ere deployed on an alternate pole about 35 feet away in the same sector. Direct radiation dosimeters were replaced at these locations for the purposes of monitoring direct radiation per the ODCM (Ref. 6), and these program exceptions were entered into the site ' s Corrective Action Program.

11.C. RES UL TS AND DISCUSSIONS All the environmental samples collected during the year were analyzed using Exelon Industrial Services laboratory procedures (Ref. 8) with the exception of Tritium analyzed by Gel Laboratories LLC .(Ref. 14). The analytical results for this reporting period are presented in Appendix B and are also summarized in Table 2. For discussion, the analytical results are divided into four categories. The categories are the Aquatic Environment, the Atmospheric Environment, the Terrestrial Environment, and Direct Radiation. These categories are further divided into subcategories according to sample type (e.g., Bay Water, Aquatic Organisms, etc. ,

for the Aquatic Environment) .

Il.C.1 Aquatic Environment The aquatic environment surrounding the plant was monitored by anal yzing samples of bay water, aquatic organisms, and shoreline sediment. These samples were obtained from various sampling locations on the Chesapeake Bay near the plant.

4

January 1 - December 31, 2016 Docket Nos. 50-317/50-318/72-8 11.C.1.a Bay Water Monthly bay water samples were taken from two locations during the year. These locations are the Intake Area (sample code WAI) and the Discharge Area (sample code WA2) . Composite samples were obtained from each location for the entire sampling period. These samples were analyzed for tritium and gamma emitters.

The tritium analyses, performed on quarterly composites of the monthly bay water samples, revealed no evidence of tritium in any of the samples taken from either site throughout the year.

Figure 1 compares tritium observed in the plant discharge and intake with annual effluent releases as reported in the Radioactive Effluent Release Report.

Monthly analyses of bay water samples from both locations for gamma emitters exhibited no detectable concentrations of any plant-related radionucl ides.

11.C.1.b Aquatic Organisms Twelve samples of aquatic organisms were obtained from four locations during the year.

Samples of fish , when in season, are normally collected from the Discharge Area (sample codes IAl and IA2) and from the Patuxent River (sample codes IA4 and IA5). As shown in Table B-2 ,

two species of fish were sampled at both the plant discharge and the control point in the Patuxent River. Oyster samples were obtained quarterly from Camp Conoy (sample code IA3) and Kenwood Beach (IA6).

Figure 2 compares K-40 and Ag- I I Om observed in oysters from Camp Conoy (lA3) with annual effluent releases of Ag-11 Om as reported in the Radioactive Effluent Release Report.

Edible portion of the fish and oyster samples were analyzed for gamma emitters.

Gamma spectrometric analyses of the fish exhibited naturally occurring K-40 but no detectable concentrations of any plant-related radionuclides. Oyster samples likewise exhibited naturally occurring K-40 but no detectable concentrations of any plant-related radionuclides.

11.C.1.c Shoreline Sediment Semiannual shoreline sediment samples are taken from one location during the year. This location is Shoreline at Barge Road (sample code WB l). The semiannual shoreline sediment samples obtained from this location were analyzed for gamma emitters.

Gamma spectrometric analyses of these samples exhibited naturall y occurring radionuclides, but no detectable concentration of any plant-related radionuclides.

5

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January 1 - December 31, 2016 Docket Nos. 50-317 /50-318/72-8 11.C.2 Atmospheric Environment The atmospheric environment was monitored by analyzing air particulate filters and charcoal cartridges (for trapping radioiodine species). These samples were collected from five locations surrounding the plant. These locations are On Site before the Entrance to Camp Conoy (sample code Al), Camp Conoy Road at the Emergency Siren (sample code A2), Bay Breeze Road (sample code A3), Route 765 at Lusby (sample code A4), and at the Emergency Operations Facility (sample code A5).

11.C.2.a Air Particulate Filters Weekly composite air particulate filter samples were collected from the five locations during the year. These samples were analyzed for beta activity and gamma emitters.

Weekly analyses for beta activity on air particulate filters collected from all five locations 2

showed values characteristic of background levels. The values ranged from 0.8 x 10- to 2 2 3 5.3 x 10-2 pCi/m 3 for the indicator locations and l .O x 10- to 3.6 x 10- pCi/m at the control location. The location with the highest overall mean of 2.0 x10-2 pCi/m 3 was A2, Camp Conoy 2 3 Siren, an indicator location, and the mean for all the indicator locations was 2.0 x 10- pCi/m .

Gamma spectrometric analyses of monthly composited air particulate samples exhibited no detectable concentrations of any plant-related radionuclides in any of these samples. Naturall y occurring radionuclides, such as Be-7, were detected in nearly all samples.

Figure 3 depicts the historical trends of beta activity.

11.C.2.b Air Iodine Weekly composited charcoal cartridges (for trapping radioiodine species) were collected from the five locations during the year. These samples were analyzed for radioiodine species.

Weekly radio iodine analyses of charcoal cartridges collected from all five locations exhibited no detectable concentrations of (-131.

Figure 3 depicts the historical trends of radioiodine.

8

January I - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 FIGURE 3 Nuclear Fallout in the Calvert Cliffs Area SURFACE AIR VAPORS , LUSBY, MD (A4) 250 ATMOSPHERIC FALLOUT From Chern obyl M" 200

.E g ATMOSPHERI C

§ 150 FALLOUT From

~ Fu kushi ma Da i-lchi c

~ 100 c:

0 u

'7 so 0

q W 00 0 N q W 00 0 N q W 00 0 N q W 00 0 N q W 00

~ ~ ~ oo oo oo oo oo m m m m m o o o o o M M M M M Calendar Year 1200 ATMOSPHERIC FALLO UT From Weapons Tes ting c;:) 1000

--gE c: 800 0

+: ATMOSPHERIC

~ FALLO UT From c Q)

Weapons Testing

(.) 600 c:

0

()

ro ATMOSPHERIC Qi 400 FALLO UT co From Chernobyl Vl Vl 0

(.'.) 200 0

Calendar Year 9

January 1 - December 31, 2016 Docket Nos. 50-317/5 0-318/72-8 11.C.3 Terrestrial Environment The terrestrial environment was monitored by analyzing samples of vegetation collected monthly, when available, from various sampling locations near the plant during the normal growing season.

11.C.3.a Vegetation Vegetation samples were collected from three locations during the year. These locations are Garden Plot off Bay Breeze Road (sample codes lB 1, IB2, and IB3), On Site before the Entrance to Camp Conoy (sample codes IB4, IB5 , and IB6), and the Emergency Operations Facility (sample codes IB7, IB8, and IB9). These samples were analyzed for gamma emitters, including analyses for 1-131.

All samples showed detectable amounts of naturally occurring K-40 and Be-7. No plant related radionuclides were found in any of these samples.

11.C.4 Direct Radiation Direct radiation is measured by a network of TLDs in each overland sector surrounding the Plant both at the plant boundary and at 4 miles from the Plant.

TLDs were collected quarterl y from twenty-three locations surrounding the plant. The twenty indicator locations are On Site Along the Cliffs (sample code DR 1), Route 765 Auto Dump (sample code DR2), Giovanni's Tavern (sample code DR3) , Route 765 across from White Sands (samp le code DR4), John's Creek (sample code DRS), Lusby (sample code DR6), On Site before the Entrance to Camp Conoy (sample code DR7), On Site at Emergency Siren (sample code DR8), Bay Breeze Road (sample code DR9), Decatur and Calvert Beach Roads (sample code DR I 0), Dirt Road off Mackall and Parran Roads (sample code DR 11 ), Mackall and Bowen Roads (sample code DR12), Wallville (sample code DR13), Rodney Point (sample code DR14),

Mill Bridge and Turner Roads (sample code DR 15), Appeal School (sample code DR 16), Cove Point and Little Cove Point Roads (sample code DR 17), Cove Point (sample code DRl 8), Long Beach (sample code DRl 9), and On Site Near Shore (sample code DR20) . The three control locations are the Emergency Operations Facility (sample code DR21 ), Solomons Island (sample code DR22), and Taylors Island, Anderson 's Property (sample code DR23) .

The mean 90 day ambient radiation measured at the indicator locations was 1 1. 17 mR and ranged from 8.75 to 14.77 mR as reported in Table 2. The control locations showed a 90 day mean of 12.78 mR with ranges from 10.21 to 15.45 mR. The location with the highest overall mean of 14.85 was Taylors Island, Anderson ' s Property (sample code DR23) which ranged from 13.52 to 15.45 mR. Figure 4 shows the hi storical comparison of the average monthl y radiation levels per calendar year for TLDs on site, at four miles, and at the control locations. A comparison of the means and ranges of the current TLD data with those of both the historical data and the regional data shows no plant-related contribution to the measured direct radiation exposure.

10

January I - December 3 I , 2016 Docket Nos. 50-3 17/50-3 18/72-8 FIGURE 4 Yearly Mean TLD Gamma Dose, Calvert Cliffs Nuclear Power Plant 6 -+-4 Miles (DRl0-18)

- Control Locations (DR21-23)

- . - on-Site (DRl, 7, 8, & 20) 5 4

ro 0

0 3 m

0::

E 2

1 0 ..., ...,...,

"',..._ 00 "'

00 "'

00 00 "'

00

"' "'"' "'"' 0 "'

0 "'

0 0 "'

0 "'...,

Calendar Year

""Dose per 30 day interval represented here for historical continuity . Current sampling intervals of mR per 90 days are given in the data tables .

II

January l - December 31 , 2016 Docket Nos . 50-317/50-318/72-8 11.D. CONCLUSION No man-made fission or activation by-products attributable to plant operations were observed in the environment surrounding the plant during the year.

Historical trends for tritium in bay water, Ag-11 Om and K-40 in oyster samples, nuclear fallout in the Calvert Cliffs area, and TLD data are depicted in Figures 1 through 4. As can be seen from these figures , the plant made no adverse radiological contributions to the surrounding environment.

To assess the plant's contribution to the ambient radiation levels of the surrounding environment, dose calculations were performed using the plant's 2016 effluent release data, on site meteorological data (see X/Q and D/Q values presented in Figures 5 and 6), and appropriate pathways . Carbon 14 dose in not included here and is instead reported in the Annual Radiological Effluents Release Report. The results of these dose calculations indicate:

Gaseous Pathways A maximum thyroid dose of 4.33 x 10* 3 mrem to a child via the plume, ground, vegetable, and inhalation path ways at 1. 1 mil es SW of the containments at Calvert Cliffs. This is about 0.006%

of the acce ptab le li mit o f 75 mrem/yr as specified in 40CFR 190 and 10CFR72. l 04 .

4 A max imum wh le body gamma dose of 3.18 x l 0* mrem to a child at 1.1 miles SW of the co nta inme nt

• at alv rt Cliffs. This is about 0.001 % of the acceptable dose limit of 25 mrem/yr as sp ci 1ed *n 40CFR 190 and 1OCF R72 . 104.

A m imu 11 ose to an y other organ, in thi s case the skin, of 3.35 x 10*4 m rem to a child at 1.1 mi le SW oft' e con tai ments at Calvert Cliffs. This is abo ut 0.001 % ofthe acceptable dose limi t of 25 mrem/yr a specified in 40CFR 190 and 1OC FR72 . 104.

Liquid Path ays A max imum th yroid d se of 1.80 x 10*3 mrem to a teen fo r all liquid pathways, which is about 0.002 % of the acce ptable dose limit of 75 mrem/yr as spec ified in 40CFR 190 and 10CFR72.l04.

A maximum whole body dose of2.89 x 10*3 mrem to a teen via all liquid pathways, which is about 0.012 % of the acceptable dose limit of 25 mrem/yr as stated in 40CFR 190 and 10CFR72.104.

3 A maximum dose to any other organ, in thi s case liver, of 5.46 x I 0* mrem to a teen for all pathways, which is 0.022% of the acceptable dose limit of 25 mrem/yr specified in 40CFR190 and 10CFR72 . l04.

12

January l - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Gaseous and Liquid Pathways Combined A maximum thyroid dose of6.13 x 10-3 mrem via liquid and gaseous pathways, which is about 0.008% of the acceptable limit of 75 mrem/yr as specified in 40CFR190 and 10CFR72.l04.

A maximum whole body dose of 3.21x10-3 mrem via liquid and gaseous pathways, which is about 0.013% of the acceptable limit of 25 mrem/yr as specified in 40CFRI 90 and 10CFR72.104.

A maximum calculated dose to all other organs via liquid and gaseous pathways is equal to 5.80 x 1o-3mrem to the liver. This dose was about 0.023% of the allowable limit of 25 mrem/yr as specified in 40CFR 190 and I OCFR 72.104.

In all cases, the calculated doses are a small fraction of the applicable limits specified in 40CFR190 and 10CFR72. l04.

Therefore, it is concluded that the operation of Calvert Cliffs Units 1 and 2 produced radioactivity and ambient radiation levels significantly below the limits of the ODCM, 40CFR190, and I OCFR 72 . l 04. There was no significant buildup of plant-related radionuclides in the environment due to the operation of the CCNPP in 2016.

13

January 1 - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 FIGURE 5 Atmospheric Dispersion Around CCNPP Average Relative Air Concentrations (X/Q) 14

January l - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 FIGURE 6 Atmospheric Dispersion Around CCNPP Average Relative Ground Deposition (D/Q) 15

January 1 - December 3 I , 20 16 Docket Nos. 50 -3 17/ 50-3 18/72-8 Table I Synopsis of2016 Calvert Cliffs Nuclear Power Plant Radiological Environmental Monitoring Program Samp le Type Sampling Number of Number Analysis Analysis Number 1 1 Frequency Locations Collected Frequency Analyzed Aquatic Environment Bay Water, Surface MC 2 24 Gamma MC 24 Water, Drinking Water Tritium Q 8 Fish' A 4 4 Gamma A 4 Oysters Q 2 8 Gamma Q 8 Shore line Sediment s 2 Gamma SA 2 Atmospheric Environment Air Iodine, w 5 263 1-131 w 263 Air Particulates* w 5 263 Gross Beta w 263 Gamma MC 60 Direct Radiatio n Amb ient Rad iation Q 23 546 TLD Q 546 Terrestrial Environment Vegetation' M 3 27 Gamma M 27 W= weekly, M=monthly , Q=quarterly, SA=semiannual, A =annual, ( =co mposite 2

Once in Season, Jul. through Septe mber 3

T he coll ection device contains Charcoal 4

Beta counting is performed after >72 hour decay, Gamma spectroscopy performed on monthly composites of week ly samples

' Monthly during growing season when avai lable 16

January 1 - December 31 , 20 16 Docket Nos. 50-3 17/50-318/72 -8 Table 2 Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant Units 1 and 2 Medium or Type and Total Lower Limit of Indicator Location with Highest Annual Control Locations Pathway Sampled Number of Detection (LLD) Locations Mfjan Highest Annual Mean (F) I Range ' Mean (F)/Range (Unit of Analyses (F)/Range Mean Measurement) Performed Name/Dista ~e &

Direction Atmospheric Environment Air Particu lates Gross Beta (265) 0.5 2.0 (21 21212) Camp Conoy 2.0 (53/53) 2.0 (51153) 1 (10-2 pCilm ) (0.8-5.3) Siren A2 (0.8-5.3) (1 .0-3.6) 2.5 km SSE Dire ct R:idiation Ambit:nt Radiation TLD (546) 11.17 (4741474) Taylors Island 14.85 (24/24) 12. 78 (72n2)

(mR/90 days) (0.31-1 4.77) DR23 (13.52-15.45) (10.21 -15.45) 1~ . 6 km ENE Mea*! ar.d

• J ng~ based ur on J etcctab1e measurements only. Fraction (F) of detectab le mea urements at specified loca:i on is indicated in parentheses 2

Distance and d 1r~c; i o n *rom the c~~ t m l poi nt between the two containment bllildings.

17 I

j

January 1 - December 31 , 2016 Docket Nos . 50-3 17/50-318/72-8 III. INDEPENDENT SPENT FUEL STORAGE INST ALLATI ON RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM III.A. INTRODUCTION ln August 1990 BGE initiated a program of additional radiological environmental monitoring around the site for the Independent Spent Fuel Storage Installation (ISFSI). The first dry fuel storage canister was loaded into the ISFSI in November of 1993 w ith more canisters bein g loaded in subsequent years. Durin g 2016, three additional canisters of spent fu el were transferred to the ISFSI.

Results of the monitoring program for the ISFS I for the current period are included in thi s report.

This report presents the content of the ISFSI REMP (Table 3), the ISFSI sampling locations (Appendix A), the summary of th e analytical results of the period (Table 4), and a compilation of the analytical data for the period (Appendix B). Interpretation of the data and conclusions are presented in the body of the report.

The ISFS I monitoring program is as described in this section of the report.

The results were com pared w ith that generated during the previous ISFSI pre-operational periods

( ef. 11) and th e current and prev ious CCNPP REMP periods. These res ults are discussed in m re detail in Sec io n Ill. C.

III.B. PROGR _

Ill .B.1 Objecti cs The objectives of the radiological environmenta l monitoring program for the ISFSI are:

a. To atisfy the community concern regarding the impact of the ISFSI on the environment,

b. To verify that radioactivity and ambient rad iation levels attributable to operation of the ISFSI are w ithin the limits specified in the Enviro nmental Radiation Protection Standards as stated in 40CFRPart 190 and 10CFR72.104,

c. To detect any measurable buildup of long-lived radionucli des in the environment due to the ISFSl,

d. To monitor and evaluate ambient radiation leve ls around the ISFST, and

e. To determine whether any statisticall y significant increase occurs in the concentration of radionuclides near the ISFSL 111.B.2 Sample Collection 18

January I - December 31, 2016 Docket Nos. 50-317/50-318/72-8 The locations of the individual sampling sites are listed in Table A-2 and shown in Figures A-4 and A-5. All samples were collected by contractors to, or personnel of, Exelon Industrial Services personnel according to Exelon Industrial Services Laboratory Procedures (Ref. 7, 8, 12).

llI.B.3 Data Interpretation Many results in environmental monitoring occur at or below the minimum detectable activity (MDA). In this report, all results at or below the relevant MDA are reported as being "less than" the MDA value.

111.B.4 Program Exceptions There were no program exceptions during this operating period.

111.C. RESULTS AND DISCUSSIONS A ll the env ironmental samples collected were analyzed using Exelon Industrial Services laboratory proced ure (Ref. 8). The analytical results for this reporting period are presented in Appendix Band are also summarized for the period in Table 4. For discussion, the analytical results are divided into three categories. The categories are the Atmospheric Environment, the Terrestrial Environm ent, and Direct Radiation. These categories are further divided into subcategories acco rd ing to sample type (e.g., Vegetation and Soil for Terrestrial Env ironment).

IH.C.1 Atmo pheric Environment The atmosp heric enviro nment was monitored by analyzing air particulate filters. These samples were co llec ed from fi ve locations surro unding the lSFSl.

No source of airborne radioiodine exists for the ISFSl. Airborne radioiodine is, therefore, not con "dered in assessing the radiological impact of the ISFSl.

111.C.1.a Air Particulate Filters Weekly composite air particulate filter samples were collected from five locations during the period. These locations are On Site before the Entrance to Camp Conoy (sample code A 1; in common with the CCNPP REMP), Meteorological Station (SFAI), CCNPP Visitor's Center (SFA2), NNW of the lSFSI (SFA3), and SSE of the ISFSI (SFA4). These samples were analyzed for beta radioactivity and gamma emitting radionuclides.

Weekly analyses for beta activity on air particulate filters collected from all five locations showed values characteristic of levels routinely observed in the REMP. These values ranged from 0.8 x 10*2 to 3 .8 x I 0* 2 pCi/m 3 for the indicator locations and 1.0 x I o*2to 4.0 x I 0*2 pCi/m 3 2

for the control location. The location with the highest overall mean of 2.0 x 10* pCi/m 3 was A I, Entrance to Camp Conoy.

19

January 1 - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Gamma spectrometric analyses of monthl y composited air particulate samples exhibited no detectable concentrations of any plant-related radionuclides in any of these samples. Naturally occ urring radionuclides, such as Be-7 , were detected in nearly all samples.

111.C.2 Terrestrial Environment The terrestrial enviro nment was monitored by anal yz ing samples of vegetation and soil collected quarterl y from the vicinity of the air sampling locations for the IS FS l.

111.C.2.a Vegetation Vegetation samples we re collected quarterl y from five locations durin g the year. These locations are: Meteorological Station (sample code SFB 1), CCNPP Vi sitor' s Center (sample code SFB2),

NNW of the ISFSI (sample code SFB3), SSE of the lSFSl (sample code SFB4), and On Site before the Entrance to Camp Co noy (sample code SFB5).

Vegetation samples were analyzed for gamma emitting radionuclides. No detectable concentrations of plant-related radionuclides were found in any of these samples. Naturally occurring radionuc lides such as K-40 were detected in a ll samples.

llJ.C.2.b Soils Soil amp les were col cted quarterly from five locations surrounding the ISFSl in the vic inity of the air samplers. These locations are: Meteorological Station (sample code FS I), CCN PP Visi tor' s Cente r ( *:un ple code SFS2), NNW of the JSFSI (sam ple code SFS3 ), E of the IS FSI (sample code F , ), und On ite before the Entrance to Cam p Conoy (sam ple code FS 5).

Soil m les wer

• analyzed for gam ma emitting radionuclides . Cesium-13 7 was detected in six quarterl y sa mples from both indicator and control locations. The Cs-137 concentrat ions ranged from 73 +/- 27 to I 2 +/- 37 pCi/kg. While the presence of Cs 137 in these samples may be plant-related, this range i.* cons istent w ith th at fou nd to be due to the residual fallout from past atmospheric nuc lear weapons testing. The activities of thi s radionuclide are we ll below the ederal .i mits esta blished in 40CFR 190 and I OCFR72 . I 04. These are comparabl e to those observed in prev ious annual reporti ng periods for the CCNP P REMP and in the earlier pre-operati onal data for the IS FSI. No detectable concentrations of plant-re lated radionuclides were found in any of these sampl es. Naturall y occurring radi onuc lides such as K-40 were also detected in all these samples.

111.C.3 Direct Radiation Direct radiation is measured by a network of TLDs surro unding the ISFSl. These TLDs are col lected quarterly from nineteen locations surrounding the IS FSl, plus one control TLD location at the Visitor' s Center (sample code SFDR7). The locations include On Site before the Entrance to Camp Conoy (samp le code DR7, common to both the CCNPP Program and the ISFSI Program) and the Meteorological Station (sam ple code DR30, previous ly a location maintained fo r historical continuity.) The other sampling locations are: SW of ISFSl, (sample code SFDR I): NNW of ISFSI, (sample code FDR2); North of ISFSI , (sampl e code SFDR3); N E of 20

January l - December 31, 2016 Docket Nos. 50-317/50-318/72-8 ISFSI, (sample code SFDR4); East of ISFSI, (sample code SFDR5); ESE of ISFSl, (sample code SFDR6); NNW of ISFSI, (sample code SFDR8); SSE of ISFSI, (sample code SFDR9); NW of ISFSI, (sample code SFDR10); WNW of ISFSI, (sample code SFDRl l); WSW ofISFSI, (sample code SFDR12); South of ISFSI, (sample code SFDR13); SE oflSFSI , (sample code SFDR14); ENE of ISFSI, (sample code SFDRl5); SSW ofISFSI, (sample code SFDR16); NNE of ISFSI, (sample code SFDRl 7) and West of ISFSI, (sample code SFDRl 8). Sampling locations are shown on Figures A-4 and A-5 .

The mean 90 day ambient radiation measured at the ISFSI indicator locations was 27.59 mR and ranged from 9.09 to 44.58 mR as reported in Table 4. The control location showed a 90 day mean of 11.89 mR and ranged from I 0.65 to 12.51 mR. The location with the highest overall mean of 42.52 mR with a range of 40.76 to 44.58 mR was SFDRl 6, SSW of ISFSI. These readings are consistent with those expected from the storage of spent fuel in the ISFSI. A comparison of the average monthly radiation levels per calendar year of the ISFSI TLD data from the indicator locations with the ISFSI control location at the Visitor' s Center, SFDR7, can be seen in Figure 7.

111.D. CONCLUSION Low levels of Cs-137 we re observed in the environment surrounding the I. FSI during the period. The Cs-137 observations were attribuced to fallout from past atmospheric weapons testing. No plant-related radionuclides were ob erved in the environs of the ISFS!.

In genera l, the results in the following tables continue the historical trends prev iously observed at the official ites of th CCNPP REMP.

21

January I - December 31 , 20 16 Docket Nos. 50-317/50-3 18/72-8 FIGURE 7

_ _ _ ______________M _ e_a_n_T_LD Gamma Do s._e~

IS_F_S_I_ _ _ __

12

-+- Co ntrol Location (SFDR7)

- - - ISFSI Mea n (DR7, SFDRl-6, 8-18) 10 8

4 2

0 N <t 0,

IL___

22

January I - December 3 1, 20 16 Docket Nos. 50-3 17/50-3 18/72-8 Table 3 Synopsis of2016 Calvert C liffs Nuclear Power Plant Independent Spent Fuel Storage Installation Radiological Environmental Monitoring Program Sample Type Sampling Number of Number Analysis Analysis Number 1 1 Frequency Locations Collect ed Frequency Analyzed Atmospheric Environment Air Particulates' w 5 265 Gros. Beta w 265 Gamma MC 60 Direct Radiation Ambient Radiation Q 20 480 TLD Q 480 Terrestrial Environme nt Vegetation Q 5 20 Gamma Q 20 Soil 0 5 20 Gamma Q 20 1 W=weekly, M=monrhly, (!=quarte r! ~ ', SA=semiannual, A=annual , C=composite 2

Beta counting 1s pe11ormec1 after >72 hour decay, Gamma spectroscopy perform~d on monthly composi tes of week ly samples 23

January I - December 31 , 2016 Docket Nos. 50-3 17/50-3 18/72 -8 Table 4 Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation Medium or Type and Total Lower Limit of Indicator Location with Highest Annual Control Locations Pathway Sampled Number of Detection (LLD) Locations M1an Highest Annual Mean (F) I Range ' Mean (F)/Range (Unit of Analyses (F)/Range Mean Measurement) Performed Name/Distance &

2 Direction Atmospheric Environment Air Particula es Gross Bet ( 65) 0.5 1.9 (212/212) Entrance to Camp 2.0 (53/53) 1.9 (53/53)

(10*2 pCi/m 3 ) (0. 8-3 .8) Conoy A1 (0 .9-3.8) (1 .0-4.0) 0.7 km S Dire ct R diation Ambient Radiation TL D ( 80) 27 .59 (456/456) SSW of ISFSI 42.52 (24/24) 11.89 (24/24)

(mR/90 days) (9 .09-44 .58) SFDR1 6 (40.76-44 .58) (10 .65-12.51) 0 .1 km SW Terrestrial Environment Soi l Gammri (20) 118 (6/16) Entrance to Camp 124 (4/4)

(pCi/kg) c -137 (73- 162) Conoy SFSS (73-162) 0.7 km ESE Mean and range based upon detecta le measureme nts only. Fraction (F) of detectable measurements at specified location is indicated in parentheses.

2 Distance and direction from the central po int between the two containment buildings.

24

January 1 - December 31, 2016 Docket Nos. 50-317/50-318/72-8 IV. REFERENCES (I) Cohen, L. K., "Preoperational Environmental Radioactivity Monitoring Program at Calvert Cliffs Units 1 and 2", NUS No. 882 Semiannual Report January-June 1971 , December 1971 ; NUS No . 1025 Annual Report 1971 , March 1973.

(2) Cohen, L. K., "Preoperational Environmental Radioactivity Monitoring Program at Calvert Cliffs Units 1 and 2, NUS No . 1137 Annua l Report 1972, December 1973.

(3) Cohen, L. K. and Malmberg, M.S., "Preoperational Environmental Radioactivity Monitoring Program at Calvert Cliffs Units 1 and 2", NUS No. 1188, Annual Report 1973, October l 974.

(4) Malmberg, M. S., "Preoperational Environmental Radioactivity Monitoring Program at Calvert Cliffs Units I and 2, NUS No. 1333, Data Summary Report, September l 970 to September 1974, July l 975 (5) Calvert Cliffs Nuclear Power Plant, Units I and 2, License Nos. DPR-53 and DPR-69, Technical Specification 5.6.2; Annual Radiological Environmental Operating Repm1.

(6) Offsite Dose Calcu lation Manual for the Calvert Cliffs Nuclear Power Plant.

(7) CP-234, Specification and Surveillance for the Radiological Environ mental Monitoring Prog~a m .

(3) ~ xe lon Indu strial Services Quality Assurance Program Manual

( Q'

, ) Land Use Census Around Calvert Cliffs Nuc lear Power Plant, August 20 16

( 10) Calvert Cliffs Independent Spent Fuel Storage Installation Technical Specifications, Append ix A to Materials License SNM-2505

( l I) Baltimore Gas and Electric Company, Radiological Environmental Monitoring Program Pre-Ope:-ational Report for the Calve11 Cliffs Independent Spent Fuel Storage Installation, ugust 1990 - November 1993, February 1994.

(12) CP-501, Liquid and Steam Sampling Techniques

( 13) CY-AA-170-1000, Radiological Environmental Monitoring Program (REMP) and Meteorological Program Implementation.

( 14) GEL 2016 Annual Quality Assurance Report for the Radiological Environmental Monitoring Program (REMP) 25

January 1 - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 APPENDIX A Sample Locations for the REMP and the ISFSI Appendix A contains information concerning the environmental samples which were collected during this operating period.

Sample locations and specific information about individual locations for the CCNPP REMP are given in Table A-1. Figure A-1 shows the location of the CCNPP in relation to Southern Maryland and the Chesapeake Bay. Figures A-2 and A-3 show the locations of the power plant sampling sites in relation to the plant site at different degrees of detail.

Sample locations and specific information about individual locations for the ISFSI radiological environmental monitoring program are given in Table A-2. Figures A-4 and A-5 show the locations of the ISFSI sampling sites in relation to the plant site at different degrees of detail.

26

January 1 - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS-SAMPLING LOCATIONS A-1 Locations of Environmental Sampling Stations for the Calvert Cliffs Nuclear Power Plant..28 A-2 Locations of Environmental Sampling Stations for the Independent Spent Fuel Storage Installation at Calvert Cliffs ...... ....... ............. ... ............. .... .......... .... ... ................ ............ .......... 33 A-1 Map of Southern Maryland and Chesapeake Bay Showing Location of Calvert Cliffs Nuclear Power Plant .......... ....... .......... ............................... .. ............. ............ ..... ............. ......... 30 A-2 Calvert Cliffs Nuclear Power Plant Sampling Locations, 0-2 Miles .. ... ............. ... ......... ... ..... .31 A-3 Calvert Cliffs Nuclear Power Plant Sampling Locations, 0-10 Miles .... .. .......... ......... ............ 32 A-4 Independent Spent Fuel Storage Installation Sampling Locations .... .......... ....... ........... .. ..... ... 34 A-5 Enlarged Map of the Independent Spent Fuel Storage Installation Sampling Locations ........35 27

January I - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 TABLE A-1 Locations of Environmental Sampling Stations for the Calvert Cliffs Nuclear Power Plant 1 1 Distance Direction Station Description (KM) (Miles) (Sector)

A1 On Site Before Entrance to Camp Conoy 0.7 0.4 s A2 Camp Conoy Rd , at emergency siren 2.5 1.6 SSE A3 Bay Breeze Rd 2.6 1.6 SE A4 Route 765, Lusby 2.9 1.8 SSW A5 Emergency Operations Facility 19.3 12.0 WNW DR01 On Site, along Cliffs 0.6 0.4 NW DR02 Route 765, Auto Dump 2.7 1.7 WNW DR03 Route 765, Giovanni's Tavern (Knotty Pine) 2.3 1.4 w DR04 Route 765, across from Vera's Beach Club 2.0 1.2 WSW DR05 Route 765, John's Creek 2.4 1.5 SW DR06 Route 765, Lusby 2.9 1.8 SSW DROi<! On Site Before Entrance to Camp Conoy 0.7 0.4 s DR08 Camp Conoy Rd at Emergency Siren 2.5 1.6 SSE DR09 Bay Breeze Rd 2.6 1.6 SE DR10 Calvert Beach Rd and Decatur Street 6.4 4.0 NW DR11 Dirt road off Mackall & Parren Rd 6.6 4.1 WNW DR12 Mackall & Bowen Rds 6.7 4.2 w DR13 iv'lackall Rd, near Wallville 6.1 3.8 WSW DR 1 Rodney Point 6.4 4.0 SW DR15 M:!I Brid ge & Turner Rds 6.2 3.9 SSW DR16 Across from Appeal School 6.5 4.0 s D 17 Cove Point & Little Cove Point Rds 5.9 3.7 SSE DR 'I Cove Point 7.1 4.4 SE DR'19 Long Beach 4.4 2.7 NW DR20 On site, near shore 0.4 0.2 NNW DR2 1 Emergency Operations Facility (EOF) 19.3 12.0 WNW D 22 ..... olom ons Island 12.5 7. 8 s DR23 Taylors Island , Anderson's Property 12.6 7.8 ENE IA1 Discharge Area 0.3 0.2 N IA10 Hog Island 15.3 9.5 SSE IA2 Discharge Vicinity 0.3 0.2 N IA3 Camp Conoy 0.9 0.6 E IA4 Patuxent River 0.0 0.0 Various IA5 Patuxent river 0.0 0.0 Various IA6 Kenwood Beach 10.7 6.7 NNW IB1 Garden Off Bay Breeze Rd 2.6 1.6 SSE IB2 Garden Off Bay Breeze Rd 2.6 1.6 SSE IB3 Garden Off Bay Breeze Rd 2.6 1.6 SSE IB4 On site, before entrance to Camp Conoy 0.7 0.4 s IB5 On site, before entrance to Camp Conoy 0.7 0.4 s IB6 On site, before entrance to Camp Conoy 0.7 0.4 s IB7 Emergency offsite faci lity 19.3 12.0 WNW IB8 Emergency offsite facility 19.3 12.0 WNW IB9 Emergency offsite facility 19.3 12.0 WNW WA1 Intake area 0.2 0.1 NNE WA2 Discharge area 0.3 0.2 N WB1 Shoreline at Barge Rd. 0.6 0.4 ESE Di stance and directio n from the central point betwee n the two co ntainment buildings 2

Co mmon to both the REMP and ISFS I mo nitoring program 28

January l - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 29

January l - December 31 , 2016 Docket Nos. 50-3 17/50-318/72-8 Figure A-1 Map of Southern Maryland and Chesapeake Bay Showing Location of Calvert Cliffs Nuclear Power Plant 30

January 1 - December 3 1, 20 16 Docket Nos. 50-3 17/50-3 18/72-8 Figure A-2 Calvert Cliffs Nuclear Power Plant Sampling Locations 0-2 Miles NE 31

January I - December 3 1, 2016 Docket Nos . 50-3 17/50-3 18/72-8 Figure A-3 Calvert Cliffs Nuclear Power Plant Sampling Locations 0-10 Miles

.o.. .................

e:::=:.~-==~.:;:.;:-~-==----':"

§-S~~~s~

32

January l - December 3 1, 2016 Docket Nos. 50-3 17/50-3 18/72-8 Table A-2 Locations of Environmental Sampling Stations for the Independent Spent Fuel Storage Installation at Calvert Cliffs Distance Direction Station Description (KM) (Sector)

Air Particulate A1 £ On Site Before Entrance to Camp Conoy 0.7 s SFA1 Meteorological Station 0.4 NW SFA2 CCNPP Visitor's Center 0.7 NNE SFA3 NNW of ISFSI 0.1 NNW SFA4 SSE of ISFSF 0.1 SSE Direct Radiation DROr On Site Before Entrance to Camp Conoy 0.7 s DR30 Meteorological Station 0.4 NW SFDR01 SW of ISFSI 0.1 SW SFDR02 NNW of ISFSI 0.1 N SFDR03 North of ISFSI 0.1 N SFDR04 NE of ISFSI 0.1 NE SFDR05 East of ISFSI 0.1 E SFDR06 ESE of ISFSI 0.1 ESE

- SFDR07

• CCN PP Visitor's Center 0.7 NNE SFDR08 NNW of ISFSI C.1 NNW SFDR09 SSE of ISFSI 0.1 SSE SFDR10 NW of !SFSI 0.1 NW SFDR11 WNWISFS I 0.1 WNW SFDR12 WSW of ISFSI 0.1 WSW SFDR'i3 South of ISFSI 0. 1 s SFDR1 4 SE of !SFSI 0.1 SE SFDR15 ENE of ISFSI 0.1 ENE SFOP.16 SSW of ISFSI 0.1 SW SFDR17 NNE of ISFSI 0.1 NNE SFDR18 West of ISFSI 0.1 w Vegetation SF8 1 ISt- SI Vegetation Met Station 0.4 NW SFB2 ISFS I Vegetation Visitors Center 0.7 NNE SFB3 ISFSI Vegetation NNW of ISFSI 0.1 NNW SFB4 ISFSI vegetation SSE of ISFSI 0.1 SSE SFB5 On Site Before Entrance to Camp Conoy 0.7 ESE Soil SFS1 ISFSI Soil Meteorological Station 0.4 NW SFS2 ISFSI Soil CCNPP Visitors Center 0. 7 NNE SFS3 ISFSI Soil NNW of ISFSI 0.1 NNW SFS4 ISFSI Soil SSE of ISFSI 0.1 SSE SFS5 ISFSI Soil On Site Before entrance to Camp Conoy 0.7 ESE Distance and direction fro m the central po mt of the ISFS I 2

Commo n to both the REMP and ISFS I monito ring program 33

January l - December 31 , 2016 Docket Nos. 50-317150-318/72-8 Figure A-4 Independent Spent Fuel Storage Installation Sampling Locations 34

January 1 - December 31, 2016 Docket Nos . 50-317/50-318/72-8 Figure A-5 Enlarged Map of the Independent Spent Fuel Storage Installation Sampling Locations 35

January I - December 31 , 2016 Docket Nos . 50-317/50-318/72-8 APPENDIXB Analysis Results for the REMP and the ISFSI Appendix Bis a presentation of the analytical results for the CCNPP and the ISFSI radiological environmental monitoring programs.

36

January l - December 31, 2016 Docket Nos. 50-317150-318/72-8 TABLE OF CONTENTS - ANALYTICAL RESULTS B-1 Concentration of Tritium and Gamma Emitters in Bay Water .......... ........ ......... ..... ........ ........ 38 B-2 Concentration of Gamma Emitters in the Flesh of Edible Fish .... .... ...... ..... ......... ....... ............ 39 B-3 Concentration of Gamma Emitters in Oyster Samples ..... ..... ................. ................................ .40 B-4 Concentration of Gamma Emitters in Shoreline Sediment ................... .. ............................. ....41 B-5 Concentration of Iodine-131 in Filtered Air ................................. .. ... ........... .... ...................... .42 B-6 Concentration of Beta Emitters in Air Particulates .. ... .... ........ ....... .... ...... ..... .......................... .44 B-7 Concentration of Gamma Emitters in Air Particulates ............. ... ... ... ........... ...... .................... .48 B-8a Concentration of Gamma Emitters in Vegetation Samples .......... ... .. .... ......... .... ..... ............... .49 B-8b Concentration of Gamma Emitters in Vegetation From Locations Around the ISFSl.. .......... 50 B-9 Concentration of Gamma Emitters in Soi I Samples From Locations Around the ISFS I ..... ... 51 B-10 Typical MDA Ranges for Gamma Spectrometry ......... .... ...... ...... .. ......................................... 52 B-11 Typical LLDs for Gamma Spectrometry .............. .. .... ............. ... .. ..... ... ................ ... ................ 53 B-12 Direct Radiation .... ................ ... .......... ... ........................... .. .... ..... ....... .... .... ...... ................ ........54 37

January 1 - December 31 , 2016 Docket Nos. 50-3 17/50-318/72-8 Table B-1 Concentration of Tritium and Gamma Emitters in Bay Water (Results in units of pCi/L +/- 2cr)

Sample Code Sample Date Gamma Emitters H3 WA1 Intake Vicinity 2/3/2016

• 2/28/2016

• 4/1/2016 <159 4/30/2016

• 6/1/2016

• 7/1/2016 * <157 8/3/2016 8/31/2016

• 9/30/2016 * <157 10/31/2016

• 12/2/2016

• 1/3/201 7 * <153 WA2 Discharge Vicinity 2/3/2016 2/28/2016

• 4/1/2016 * <152 4/30/2016

• 6/1/2016 7/1/2016 <157 8/3/2016 8/31/2016 9/30/2016 <155 10/31 /2016 12/2/2016 1/3/2017 <153

• All No n-Natural Gamma Emitters <MDA 38

January 1 - December 3 1, 2016 Docket Nos. 50-317/50-3 18/72-8 Table B-2 Concentration of Gamma Emitters in the Flesh of Edible Fish (Results in units of pCi/kg (wet) +/- 2cr)

Sample Code Sample Date Sample Type Gamma Emitters IA1 Discharge Area 8/17/2016 Striped bass

• IA2 Discharge Area 8/17/2016 Perch

• 1 IA4 Patuxent River 8/17/2016 Perch

• 1 IA5 Patuxent River 8/17/2016 Striped bass

• Co ntro l Location

• All Non-Natural Gamma Emitters <MDA 39

January 1 - December 31 , 2016 Docket Nos . 50-317/50-318/72-8 Table B-3 Concentration of Gamma Emitters in Oyster Samples (Results in units of pCi/kg (wet)+/- 2cr)

Sample Code Sample Date Gamma Emitters IA3 Camp Conoy 3/29/2016

• 6/14/2016 8/17/2016

• 10/20/2016

• 1 IA6 Kenwood Beach 3/29/2016

• 6/14/2016

• 8/17/2016 10/20/2016

• Control Location

• All No n-Natural Gamma Emitters <MDA 40

January 1 - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Table B-4 Concentration of Gamma Emitters in Shoreline Sediment (Results in units of pCi/kg (dry)+/- 2cr)

Sample Code Sample Date Gamma Emitters WB1 Shoreline at Barge Rd . 4/5/2016

• 10/25/2016 *

• All No n-Natural Gamma Emitters <MDA 41

January l - December 31 , 2016 Docket Nos. 50-317150-318/72-8 Table B-5 Concentration of lodine-131 in Filtered Air (Results in units of 10*3 pCi/m 3 +/- 2cr) 1 Start Date Stop Date A1 A2 A3 A4 A5 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 12/28/2015 1/4/2016 * * * *

• 1/4/2016 1/11/2016 * * *

• 1/11/2016 1/18/2016 * * * *

• 1/18/2016 1/25/2016 * * *

• 1/25/2016 2/1/2016 *

• 2/1/2016 2/8/2016 *

• 2/8/2016 2/15/2016 * *

• 2/15/2016 2/22/2016 * * *

• 2/22/2016 2/29/2016

• 2/29/2016 317/2016 * * *

• 317/2016 3/14/2016 *

• 3/14/2016 3/21/2016 * *

• 3/21/2016 3/28/2016 * * *

• 3/28/2016 4/4/2016 * * *

• 4/4/2016 4/11/2016 * * *

• 4/11/2016 4/18/2016 *

• 4/18/2016 4/25/2016 *

• 4/25/2016 5/2/2016 * *

• 5/2/2 016 5/9/2016 *

• 5/9/2016 5/16/2016 *

• 5/16/2016 5/23/2016

• 5/23/2016 5/30/2016 5/30/2016 6/6/2016 *

• 6/6/2016 6/13/2016 * * *

• 6/13/2016 6/20/2016 * * *

• 6/20/2016 6/27/2016 * *

• 6/27/2016 7/4/2016

• 7/4/2016 7/11/2016 * * *

• 7/11/2016 7/18/2016 * * *

• 7/18/2016 7/25/2016 * * *

• 7/25/2016 8/1/2016 * * * *

• Control Location 2

Power outage

• All No n-Natural Gamma Emitters <MDA 42

January 1 - December 31, 2016 Docket Nos. 50-317/50-318/72-8 Table B-5 Concentration of Iodine-131 in Filtered Air (Results in units of 10-3 pCi/m 3 +/- 2cr) 1 Start Date Stop Date A1 A2 A3 A4 A5 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 8/1/2016 8/8/2016 * *

• 8/8/2016 8/15/2016 * * *

• 8/15/2016 8/22/2016 * * *

• 8/22/2016 8/29/2016 * * * *

• 8/29/2016 9/5/2016 * * *

• 9/5/2016 9/12/2016 *

• 9/12/2016 9/19/2016 * * * *

• 9/19/2016 9/26/2016 *

• 9/26/2016 10/3/2016 * *

• 10/3/2016 10/10/2016 * * * *

• 10/10/2016 10/17/2016 *

• 10/17/2016 10/24/2016 * * * *

• 10/24/2016 10/31/2016 * * *

• 10/31/2016 1117/2016

• 1117/2016 11/14/2016 * * * *

• 11 /14/2016 11/21/2016 * *

• 11/21/2016 11/28/2016 * * *

• 11/28/2016 12/5/2016 * * * *

• 12/5/2016 12/12/2016 * * * *

• 12/12/2016 12/19/2016 * *

• 12/19/2016 12/26/2016 * * * *

• 12/26/2016 1/2/2017 * * * *

• Control Location

• All on-Natural Gamma Emitters <MDA 43

January 1 - December 31 , 2016 Docket Nos. 50-3 17/50-318/72-8 Table B-6 Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2cr) 1 Start Date Stop Date A1 A2 A3 A4 A5 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 12/28/2015 1/4/2016 1.6+/-0 _1 1.6 +/- 0.1 1.4 +/- 0.1 1.5 +/- 0.1 1.4 +/- 0.1 1/4/2016 1/11 /2016 1.6 +/- 0.1 1.6 +/- 0.1 1.9 +/- 0.1 1.6 +/- 0.1 1.8+/- 0.1 1/11/2016 1/18/2016 2.5 +/- 0.1 2.2 +/- 0.1 2.1 +/- 0.1 2.2 +/- 0.1 2.5 +/- o_ 1 1/18/2016 1/25/2016 1.9 +/- 0.1 1.7 +/- 0.1 1.6 +/- 0.1 1.7+/- 0.1 1_9+/-0 _1 1/25/2016 2/1/2016 2_0 +/- 0.1 1.9 +/- 0.1 1.9+/-0_1 1.8 +/- 0.1 1.9+/-0.1 2/1/2016 2/8/2016 1.5 +/- 0.1 1.4 +/- 0.1 1_5 +/- 0_1 1.5 +/- 0.1 1.6 +/- 0.1 2/8/2016 2/15/2016 1.4 +/- 0.1 1.3 +/- 0.1 1.4 +/- 0.1 1.2 +/- 0.1 1.2 +/- 0.1 2/15/2016 2/22/2016 1.6 +/- 0.1 1.5 +/- 0.1 1_6 +/- 0_1 1.4 +/- 0_1 1.8+/- 0.1 2/22/2016 2/29/2016 2 _0 +/- 0.2 1.9 +/- 0.2 1.8 +/- 0.2 1.6 +/- 0.1 2 2/29/2016 317/2016 1.7 +/- 0.1 1.7 +/- 0.1 1.7 +/- 0.1 1.6 +/- 0.1 2 317/2016 3/14/2016 1.7 +/-0.1 1.7 +/- 0.1 1.7 +/- 0.1 1.6 +/- 0.1 1.6+/- 0.1 3/ 14/2016 3/21/2016 1.3 +/- o_1 1.2 +/- 0.1 1.4 +/- 0.1 1.3 +/- 0.1 1.4 +/- 0.1 3/21/2016 3/28/2016 1.6 +/- 0.1 1.5 +/- 0.1 1_6 +/- 0.1 1.5 +/- 0.1 1.7+/-0 .1 3/28/2016 4/4/2016 1.8 +/- 0.1 1.8 +/- 0.1 1.9+/- 0.1 1.8 +/- 0.1 1.8+/- 0.1 4/4/2016 4/11 /2016 1.5 +/- o_1 1.5 +/- 0.1 1.6 +/- 0.1 1.5 +/- 0.1 1.5+/- 0.1 4/11 /2016 4/18/2016 1.9 +/- 0.1 1.8 +/- 0.1 1.7 +/-0.1 1.7+/- 0.1 1.9+/- 0.1 4/18/2016 4/25/2016 2.1+/- 0.1 2.0 +/- 0.1 2.1+/-0.1 2.0 +/- 0.1 2.2 +/- 0.1 4/25/2016 5/2/2016 1.3 +/- 0.1 1.3 +/- 0.1 1.3+/- 0.1 1.1+/- 0.1 1 _2 +/- o_1 5/2/2016 5/9/2016 0.9 +/- 0.1 0.8 +/- 0.1 0.9 +/- 0.1 0.8 +/- 0.1 1.0+/- 0.1 5/9/2016 5/16/2016 1.5 +/- 0.1 1.5 +/- o_1 1.5 +/- o_1 1.6 +/- 0.1 1.5 +/- 0.1 5/ 16/2016 5/23/2016 1.7 +/- 0.1 1.7 +/- o_ 1 1.6 +/- 0.1 1_7+/- 0.1 1.6 +/- 0.1 5/23/2016 5/30/2016 1.9+/- 0.1 2.0 +/- 0.1 1.9+/-0.1 2.0 +/- 0.1 2.2 +/- 0.1 5/30/2016 6/6/2016 1.4 +/- 0.1 1.4 +/- 0.1 1.3 +/- 0.1 1.4 +/- 0.1 1.5 +/- o_1 6/6/2016 6/1 3/2016 1.8 +/- 0.1 1.7 +/- 0.1 1.6+/-0.1 1.8 +/- 0.1 1.7+/- 0.1 6/13/2016 6/20/2016 1.6 +/- o_1 1.7 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 1.7+/- 0.1 6/20/2016 6/27/2016 2.3 +/- 0.1 2.6 +/- 0.1 2_3 +/- o_1 2 _2 +/- 0.1 2.1 +/- 0.1 6/27/2016 7/4/2016 3.1 +/- 0.1 5.3 +/- 0.2 3. 5 +/- 0_2 2.0 +/- o_1 2.4 +/- 0.1 7/4/2016 7/11/2016 1.8 +/- 0.1 2.0 +/- 0.1 1.9 +/- 0.1 1.7+/- 0.1 1_9 +/- 0.1 7/11 /2016 7/18/2016 2.1 +/- 0.1 2.0 +/- 0.1 2.2 +/- 0.1 2.0 +/- 0.1 2_0 +/- 0.1 7/18/2016 7/25/2016 3.1 +/- 0.2 2.9 +/- 0.2 3.0 +/- 0_2 2.9 +/- 0.2 3.2 +/- 0.2 7/25/2016 8/1/2016 2 _1+/- 0_1 2.2 +/- 0.1 2.3 +/- 0.1 2.1 +/- 0.1 2-2 +/- 0.1 Contro l Location 2

Power outage 44

January 1 - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Table B-6 Concentration of Beta Emitters in Air Particulates (Results in units of 10*2 pCi/m 3 +/- 2cr) 1 Start Date Stop Date A1 A2 A3 A4 A5 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 8/1/2016 8/8/2016 1.7 +/- 0.1 1.6 +/- 0.1 1.7 +/- 0.1 1.7+/-0 .1 1.6 +/- 0.1 8/8/2016 8/15/2016 2.1 +/-0.1 2.2 +/- 0.1 2.2 +/- 0.1 2.1+/-0.1 2.1+/-0 .1 8/15/2016 8/22/2016 1.8 +/- 0.1 1.6 +/- 0.1 1.8 +/- 0.1 2.0 +/- 0.1 1.9 +/- 0.1 8/22/2016 8/29/2016 2.2 +/- 0.1 2.0 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 2.4 +/- 0.2 8/29/2016 9/5/2016 2.1 +/- 0.1 2.2 +/- 0.1 2.3 +/- 0.1 2.4 +/- 0.1 2.5 +/- 0.1 9/5/2016 9/12/2016 3.1 +/- 0.2 3.4 +/- 0.2 3.4 +/- 0.2 3.7 +/- 0.2 3.4 +/- 0.2 9/12/2016 9/19/2016 1.5 +/- 0.1 1.7 +/- 0.1 1.7 +/- 0.1 1.7 +/- 0.1 1.7+/-0.1 9/19/2016 9/26/2016 2.1+/-0.1 2.3 +/- 0.1 2.1 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.2 9/26/2016 10/3/2016 1.5 +/- 0.1 1.3 +/- 0.1 1.3 +/- 0.1 1.4 +/- 0.1 1.3+/-0 .1 10/3/2016 10/10/2016 1.5 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 1.5 +/- 0.1 10/10/2016 10/17/2016 2.2 +/- 0.1 2.3 +/- 0.1 2.1+/-0.1 1.6 +/- 0.1 2.3+/-0.1 10/17/2016 10/24/2016 1.9 +/- 0.1 2.0 +/- 0.1 1.8 +/- 0.1 2.0 +/- 0.1 1.9+/-0.1 10/24/2016 10/31/2016 2.3 +/- 0.1 2.3 +/- 0.1 2.0 +/- 0.1 2.3 +/- 0.2 2.0+/-0.1 10/31/2016 1117/2016 2.3 +/- 0.1 2.4 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 2.1 +/- 0.1 1117/2016 11/14/2016 1.8 +/- 0.1 1.9 +/- 0.1 1.7+/-0.1 2.0 +/- 0.1 1.8 +/- 0.1 11/14/2016 11/21/2016 3.8 +/- 0.2 3.8 +/- 0.2 3.3 +/- 0.2 4 .0 +/- 0.2 3.6 +/- 0.2 11/21/2016 11/28/2016 2.4 +/- 0.1 2.6 +/- 0.1 2.3 +/- 0.1 2.7 +/- 0.1 2.5+/-0.1 11/28/2016 12/5/2016 2.0 +/- 0.1 2.0 +/- 0.1 2.0 +/- 0.1 2.2 +/- 0.1 2.0+/-0 .1 12/5/2016 12/12/2016 1.8 +/- 0.1 1.8 +/- 0.1 1.7 +/- 0.1 2.0 +/- 0.1 1.9+/-0.1 12/12/2016 12/19/2016 2.7 +/- 0.1 2.6 +/- 0.1 2.7 +/- 0.1 2.4 +/- 0 .1 2.3 +/- 0.1 12/19/2016 12/26/2016 2.9 +/- 0.1 2.9 +/- 0.1 2.7 +/- 0.1 3.0 +/- 0.1 3.0+/-0 .1 12/26/2016 1/2/2017 1.6 +/- 0.1 1.8 +/- 0.1 1.6 +/- 0.1 1.9 +/- 0.1 1.6 +/- 0.1 Control Location 45

January I - December 31 , 2016 Docket Nos. 50-317 /50-318/72-8 Table B Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2cr)

Start Date Stop Date SFA1 SFA2 1 SFA3 SFA4 MET Station Visitors NNWof ISFSI SSE of ISFSI Center 12/28/2015 1/4/2016 1.6 +/- 0.1 1.5+/-0.1 1.6 +/- 0.1 1.6 +/- 0.1 1/4/2016 1/11/2016 1.5 +/- 0.1 1.5 +/- 0.1 1.5 +/- 0.1 1.7+/-0.1 1/11 /2016 1/18/2016 2.6 +/- 0.1 2.2 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 1/18/2016 1/25/2016 1.9 +/- 0.1 1.7 +/- 0.1 1.8 +/- 0.1 1.7+/- 0.1 1/25/2016 2/1/2016 2.1 +/- 0.1 1.8 +/- 0.1 1.9 +/- 0.1 1.9+/-0.1 2/1/2016 2/8/2016 1.5 +/- 0.1 1.3 +/- 0.1 1.4 +/- 0.1 1.4 +/- 0.1 2/8/2016 2/15/2016 1.3 +/- 0.1 1.4+/-0.1 1.3 +/- 0. 1 1.4 +/- 0.1 2/15/2016 2/22/2016 1.5 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 2/22/2016 2/29/2016 1.8 +/- 0.2 1.9 +/- 0.2 1.7 +/- 0.1 1.8 +/- 0.2 2/29/2016 3/7/2016 1.6 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 317/2016 3/14/2016 1.7 +/- 0.1 1.7+/-0 .1 1.6 +/- 0.1 1.6 +/- 0.1 3/14/2016 3/21 /2016 1.4 +/- 0.1 1.3 +/- 0.1 1.2 +/- 0.1 1.3+/- 0.1 3/21/2016 3/28/2016 1.7 +/- 0.1 1.5 +/- 0.1 1.6 +/- 0.1 1.5 +/- 0.1 3/28/2016 4/4/2016 1.9 +/- 0.1 1.8 +/- 0.1 1.8 +/- 0.1 1.8 +/- 0.1 4/4/2016 4/11/2016 1.6 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 4/11/2016 4/18/2016 1.9 +/- 0.1 1.9+/-0.1 1.9+/-0 .1 1.9 +/- 0.1 4/18/2016 4/25/2016 2.1 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 2.2 +/- 0.1 4/25/2016 5/2/2016 1.2 +/- 0.1 1.2+/-0 .1 1.3 +/- 0.1 1.1 +/-0.1 5/2/2016 5/9/2016 0.8 +/- 0.1 1.0 +/- 0.1 0.8 +/- 0.1 0.8 +/- 0.1 5/9/2016 5/16/2016 1.6 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 1.5 +/- 0.1 5/16/2016 5/23/2016 1.7 +/- 0.1 1.6 +/- 0.1 1.8 +/- 0.1 1.6 +/- 0.1 5/23/2016 5/30/2016 1.9 +/- 0.1 2.0 +/- 0.1 2.0 +/- 0.1 1.9+/-0.1 5/30/2016 6/6/2016 1.3 +/- 0.1 1.3 +/- 0.1 1.3 +/- 0.1 1.4 +/- 0.1 6/6/2016 6/13/2016 1.7 +/- 0.1 1.8+/-0.1 1.7+/-0.1 1.6 +/- 0.1 6/13/2016 6/20/2016 1.6 +/- 0.1 1.8 +/- 0.1 1.7+/-0.1 1.7 +/- 0.1 6/20/2016 6/27/2016 1.9 +/- 0.1 2.3 +/- 0.1 1.9 +/- 0.1 2.1 +/- 0.1 6/27/2016 7/4/2016 1.8 +/- 0.1 1.7+/-0 .1 1.7+/-0 .1 2.0 +/- 0.1 7/4/2016 7/11/2016 1.8 +/- 0.1 1.8 +/- 0.1 1.9+/-0.1 1.8 +/- 0.1 7/11/2016 7/18/2016 2.1 +/- 0.1 2.1 +/-0.1 2.0 +/- 0.1 2.0 +/- 0.1 7/18/2016 7/25/2016 2.8 +/- 0.2 2.9 +/- 0.2 2.8 +/- 0.2 2.8 +/- 0.2 7/25/2016 8/1/2016 2.1 +/- 0.1 2.1 +/- 0.1 2.2 +/- 0.1 2.0 +/- 0.1 46

January 1 - December 31 , 2016 Docket Nos. 50-317 /50-318/72-8 Table B Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10*2 pCi/m 3 +/- 2cr) 1 Start Date Stop Date SFA1 SFA2 SFA3 SFA4 MET Station Visitors NNW of ISFSI SSE of ISFSI Center 8/1/2016 8/8/2016 1.6 +/- 0.1 1.7+/-0.1 1.5 +/- 0.1 1.5+/-0.1 8/8/2016 8/15/2016 1.9 +/- 0.1 2.1+/-0.1 1.8 +/- 0.1 1.9+/-0.1 8/15/2016 8/22/2016 1.8 +/- 0.1 1.9 +/- 0.1 1.8 +/- 0.1 1.6 +/- 0.1 8/22/2016 8/29/2016 2.1 +/- 0.1 2.1+/-0 .1 2.2 +/- 0.1 2.1 +/- 0.1 8/29/2016 9/5/2016 2.3 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 9/5/2016 9/12/2016 3.3 +/- 0.2 3.6 +/- 0.2 3.7 +/- 0.2 3.3 +/- 0.2 9/12/2016 9/19/2016 1.6 +/- 0.1 1.7+/-0.1 1.7+/-0.1 1.5 +/- 0.1 9/19/2016 9/26/2016 2.2 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 2.2 +/- 0.1 9/26/2016 10/3/2016 1.3 +/- 0.1 1.3+/- 0.1 1.3+/-0 .1 1.2 +/- 0.1 10/3/2016 10/10/2016 1.4 +/- 0.1 1.4+/-0.1 1.4 +/- 0.1 1.4 +/- 0.1 10/10/2016 10/17/2016 2.0 +/- 0.1 2.2 +/- 0.1 2.0 +/- 0.1 2.2 +/- 0.1 10/17/2016 10/24/2016 2.0 +/- 0.1 2.1 +/-0.1 2.0 +/- 0.1 1.9+/-0.1 10/24/2016 10/31/2016 2.0 +/- 0.1 2.3 +/- 0.1 2.1 +/- 0.1 2.1 +/- 0.1 10/31/2016 11/7/2016 2.2 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 1117/2016 11/14/2016 1.7 +/- 0.1 1.9+/-0.1 1.9 +/- 0.1 1.9 +/- 0.1 11/14/2016 11/21/2016 3.7 +/- 0.2 4.0 +/- 0.2 3.7 +/- 0.2 3.5 +/- 0.2 11 /21/2016 11/28/2016 2.3 +/- 0.1 2.4 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 11/28/2016 12/5/2016 2.1+/-0.1 2.0 +/- 0.1 2.0 +/- 0.1 2.1 +/- 0.1 12/5/2016 12/12/2016 1.9 +/- 0.1 1.9+/-0.1 1.9 +/- 0.1 1.8 +/- 0.1 12/12/2016 12/19/2016 2.5 +/- 0.1 2.6 +/- 0.1 2.4 +/- 0.1 2.7 +/- 0.1 12/19/2016 12/26/2016 2.9 +/- 0.1 3.0 +/- 0.1 2.9 +/- 0.1 3.0 +/- 0.1 12/26/2016 1/2/2017 1.7 +/- 0.1 1.6 +/- 0.1 1.6 +/- 0.1 1.7 +/- 0.1 Control Location 47

January I - December 3 1, 2016 Docket Nos. 50-3 17/50-318/72-8 Table B-7 Concentration of Gamma Emitters in Air Particulates (Results in units of 10-3 pCi/m 3 +/- 2cr) 1 Sample Date A1 A2 A3 A4 A5 Entrance to Camp Conoy Bay Breeze Route 765 at EOF Camp Conoy Siren Rd Lusby 2/1/2016 * * *

• 2/29/2016 * * *

• 3/28/2016 * * *

• 5/2/2016 * *

• 5/30/2016 * *

• 6/27/2016 * * *

• 8/1/2016 * *

• 8/29/2016 * *

• 10/3/2016 * *

• 10/31/2016 *

• 11/28/2016 * * * *

• 1/2/2017 * * * *

• 1 Sample Date SFA1 SFA2 SFA3 SFA4 MET Station Vis itors Center NNWof ISFSI SSE of ISFSI 2/1/2016 * * *

• 2/29/2016 3/28/2016 *

• 5/2/2016 * * *

• 5/30/2016 * *

• 6/27/2016

• 8/1/2016 * *

• 8/29/2016 * * *

• 10/3/2016 10/31/2016

• 11/28/2016

• 1/2/201 7

• Control Location

• All No n-Natural Gamma Emitters <MDA 48

January 1 - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Table B-8a Concentration of Gamma Emitters in Vegetation Samples (Results in units of pCi/kg (wet) +/- 2cr)

Sample Code Sample Date Sample Type Gamma Emitters IB1 Bay Breeze Rd 6/28/2016 Brussels sprouts

• 7/26/2016 Collards 8/22/2016 Brussels sprouts

• IB2 Bay Breeze Rd 6/28/2016 Tree Leaves

• 7/26/2016 Tree Leaves 8/22/2016 Collards

• IB3 Bay Breeze Rd 6/28/2016 Tree Leaves

• 7/26/2016 Tree Leaves Leafy portion of 8/22/2016 Peppers

• IB4 Camp Conoy Entrance 6/28/2016 Brussels sprouts

• 7/26/2016 Brussels sprouts

• 8/22/2016 Tree Leaves IB5 Camp Conoy Entrance 6/28/2016 Tree Leaves 7/26/2016 Collards 8/22/2016 Cabbage

• IB6 Camp Conoy Entrance 6/28/2016 Tree Leaves

• 7/26/2016 Cabbage

• 8/22/2016 Brussels sprouts

• 1 IB7 EOF 6/28/2016 Brussels sprouts

• 7/26/2016 Brussels sprouts 8/22/2016 Cabbage 1

IB8 EOF 6/28/2016 Cabbage

• 7/26/2016 Collards

• 8/22/2016 Collards

• 1 IB9 EOF 6/28/2016 Squash 7/26/2016 Cabbage

• 8/22/2016 Brussels sprouts

• Contro l Location

• All o n-Natura l Gamma Em itters <MDA 49

January 1 - December 31, 2016 Docket Nos. 50-3 17/50-318/72-8 Table B-8b Concentration of Gamma Emitters in Vegetation From Locations Around the ISFSI (Results in units of pCi/kg (wet)+/- 2cr)

Sample Code Sample Date Gamma Em itters SFB1 MET Station 3/21/2016

• 617/2016

• 9/26/2016

• 11/14/2016

• 1 SFB2 Visitor's Center 3/21/2016

• 617/2016

• 9/26/2016

• 11/14/2016 SFB3 NNWof ISFSI 3/21/2016

• 617/2016

• 9/26/2016

• 11/14/2016 SFB4 SSE of ISFSI 3/2 1/2016 617/2016

• 9/26/2016

• 11 /14/2016 SFB5 On Site Before Entrance to Camp Conoy 3/21/2016

• 617/2016

• 9/26/2016 11/14/2016

• Contro l Location

• All No n-Natu ral Gamma Em itters <MDA 50

January 1 - December 31, 2016 Docket Nos. 50-317 /50-318/72-8 Table B-9 Concentration of Gamma Emitters in Soil Samples From Locations Around the ISFSI (Results in units of pCi/kg (dry)+/- 2cr Sample Code Sample Date Cs-137 Gamma Emitters SFS1 MET station 3/21/2016

• 617/2016 9/26/2016

• 11/14/2016

• SFS2~

Visitors Center 3/21/2016

• 617/2016

• 9/26/2016

• 11/14/2016 SFS3 NNWof ISFSI 3/21/2016 617/2016

• 9/26/2016 80+/-41

• 11/14/2016 132 +/- 49

• SFS4 SSE of ISFSI 3/21/2016

• 617/2016

• 9/26/2016 11/14/2016

• SFS5 Entrance to Camp Conoy 3/21/2016 162 +/- 37

• 617/2016 161 +/- 46

• 9/26/2016 73 +/- 27

• 11/14/2016 101 +/- 26

• This isotope <MDA 2

Control Location

• All on-Natural Gamma Emitters <MDA 51

January 1 - D ecember 3 1, 201 6 Do ck et Nos. 50-3 17/ 50-3 18/ 72-8 Table B-10 Typica l MDA Ranges for Gamma Spectrometry Bay Water, Air Surface Shoreline Selected Fish (pCi/kg) Groundwater Milk Oysters Soil Vegetation Particulates Water, Sediment Nu elides (10* pCi/m 3) 2 Wet (pC i/L) (pCi/L) (pCi/kg )Wet (pCi/kg)Dry (pCi/Kg)Wet Drinking (pCi/kg)Dry Water (pCi/L)

Na-22 0.1 - 0.3 3 - 5.2 13.7 - 29.3 3 - 5.2 5.7 - 8 5.3 - 23.8 24 .2 - 83.7 26 .9 - 91 .3 14.2 - 46 .7 K-40 2.0 - 04.0 33.5 - 56 .8 86. 2 - 202 34.6 - 62.3 38 .8 - 66 .7 41.4 - 188 144 - 810 156 - 840 93.4 - 380 Cr-51 1.0 - 4.0 23.2 - 35 .1 77 .2 - 400 26.1 - 38.6 32 .2 - 47 .8 31 .7 - 143 539 - 1380 336 - 1423 77.2 - 320 Mn-54 0.1 - 0.2 2.8 - 4.4 13.2 - 21 .1 2.8 - 4.6 4.1 - 5.9 6.8 - 31 .6 31 .6 - 74.1 24 .6 - 81 .5 10.5 - 38.5 Co-58 0.1 - 0.4 3 - 4.5 16 - 31 .2 2.9 - 4.6 4.1 - 6 4.5 - 45 .3 58.7 - 136 30 .3 - 102 11 .1 -39.3 Fe-59 0.3 - 3.0 6.8 - 10.2 37.7 - 116 6.7 - 10.6 10.4 - 14.8 .9 - 147 139 - 322 79 .6 - 264 26.5 - 94.6 Co-60 0.1 - 0.2 3 - 4.8 15.1 - 24.3 2.9 - 4.9 4.9- 7.2 8.3 - 33.6 27.6 - 73 .8 24.5 - 78 .7 13.3 - 41 .1 Zn-65 0.2 - 0.5 6.2 - 9.7 37 .1 - 55 6.3 - 11 .6 10.7 - 15 20.2 - 71 .2 69 .2 - 207 74.7 - 226 29 .3 - 92 .1 Nb-95 0.1 - 0.7 3.3 - 4.9 13.7 - 46.8 3.5 - 5.4 4.3 - 6.2 4.4 - 19.7 73- 124 48.8 - 178 11 .7 - 44.6 Zr-95 0.2 - 0.5 5.2 - 7.7 20 .8 - 50.5 5.1 - 8.1 7.2 - 10 7.1 - 31.7 0 - 1175 56.2 - 191 19.4 - 68.8 Ru-106 0.9 - 1.8 24 - 36 .9 85.6 - 175 24.1 - 39.2 35 .2 - 49.2 37.3 - 151 208 - 604 211 - 658 96 .1 - 325 Ag-110m 0.1 - 0.2 2.6 - 4.1 10.1 - 20 2.7 - 4.2 3.9 - 5.3 4.3 - 17.4 23 .3 - 70.7 28 - 83.3 11 .2 - 35.2 1-131 1 0.1 - 1.4 1.3 - 9.4 25.2 - 619 5.1 - 13 .3 - 1.4 5 - 37 .8 644-1750 254 - 4829 6.9 - 110 Cs-134 0.1 - 0.6 2.7 - 3.9 11 .7 - 16.6 2.7 - 4.3 3.7 - 5.2 10-14.4 39 .1 - 58.2 37 .2 - 73.7 13.9 - 34 .2 Cs-137 0.1 - .3 3 - 4.4 13.1 - 19.7 2.8 - 4.7 4.3 - 6 10.1 - 15.6 37.6 - 62.6 38.2 - 85 15 - 38.2 Ba-140 0.7 - 8.0 4.5 - 12.3 24 - 578 6.5 - 11 .1 5.1 - 10.1 6.7 - 37 83-875 77.3 - 1242 11 .8 - 90.5 La-140 0.7 - 8.0 4.5 - 12.3 24 - 578 6.5 - 11 .1 5.1 - 10.1 6.7 - 37 83-875 77.3 - 1242 11 .8 - 90 .5 Ce-144 0.1 - 0.3 13.9 - 21.3 38 .2 - 77.8 14.4 - 22 .9 20 .1 - 27 16.7 - 67.9 89.8 - 288 104.2 - 341 39.5 - 139 This MDA range for 1- 131 on a charcoal cartridge is typically 6.91 x I 0-3 to 1.40 x I 0-2pCi/ m 52

January I - December 3 1, 20 16 Docket Nos. 50-317/50-318/72-8 Table B-1 1 Typical LLDs for Gamma Spectrometry Bay Water, Air Selected Surface Water, Fish pCi/kg Ground water Oysters pCi/kg Precip itation Soil pCi/kg Vegetation Particulates Nuclides Drinking Water (wet) pCi/L (wet) pCi/L (dry) pCi/kg (dry) 10-3 pC i/m 3 pCi/L Na-22 2.9 2.9 22 2.9 22 2.9 24 35 Cr-51 12 17 88 17 88 17 110 162 Mn-54 2.1 2.4 17 2.4 17 2.4 18 27 Co-58 2 2.4 16 2.4 16 2.4 17 25 Fe-59 4.6 5.2 37 5.2 37 5.2 38 60 Co-60 2.7 2.8 22 2.8 22 2.8 21 33 Zn-65 2.8 5.6 23 5.6 23 5.6 54 66 Nb-95 1.9 2.2 15 2.2 15 2.2 18 25 Zr-95 3.3 3.8 27 3.8 27 3.8 29 44 Ru-106 17 20 135 20 135 20 146 223 Ag-11 0m 1.8 2.1 14 2 .1 14 2.1 16 25 Te-129m 20 26 149 26 149 26 180 265 1-131

• 1.5 2 11 2 11 2 14 20 Cs-134 1.9 2.2 15 2 .2 15 2.2 20 24 Cs-137 1.8 2.3 15 2 .3 15 2.3 17 27 Ba-140 6.1 7.3 48 7.3 48 7.3 54 80 La-140 3.4 4.1 26 4 .1 26 4.1 25 41 Ce-144 5.5 12 43 12 43 12 75 101

• The LLD for 1- 131 measured on a charcoal canridge is 2.0 x I 0-3 pCi/m3 53

January I - December 3 1, 2016 Docket Nos. 50-3 I 7/50-3 18/72-8 Table B-12 Direct Radiation (Results in Units of mR/90 days+/- 2cr)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter DR01 On Site, along Cliffs 12.76 +/- 1.24 13.10 +/- 0.79 11.49 +/- 0.97 13.08 +/- 1.23 DR02 Route 765, Auto Dump 10.97 +/- 0.88 11.28 +/- 1.07 10.06 +/- 1.03 10.99 +/- 0.68 DR03 Route 765, Giovanni's 10.60 +/- 0.78 10.92 +/- 1.26 9.25 +/- 0.87 10.89 +/- 1.49 Tavern DR04 Route 765, across from 12.35 +/- 0.86 12.33 +/- 0.91 11 .29 +/- 0.74 12.56 +/- 1.26 Vera's Beach Club OROS Route 765, John's 12.09 +/- 0.46 12.19 +/- 0.29 10.88 +/- 0.57 12.51+/- 1.39 Creek DR06 Route 765 at Lusby 10.25 +/- 0.52 10.68 +/- 0.57 9.22 +/- 1.30 10.28 +/- 0.70 DR07 Entrance to Camp 10.11 +/- 0.54 10.71 +/- 0.84 9.09 +/- 1.33 10.41 +/- 0.28 Conoy DR08 Camp Conoy Rd at 14.57 +/- 2.34 14.77 +/- 2.01 13.04 +/- 1.70 14.76 +/- 2.13 Emergency Siren DR09 Bay Breeze Rd 10.61 +/- 0.60 10.77 +/- 0.60 9.71 +/- 1.09 10.56 +/- 0.37 DR10 Calvert Beach Rd and 10.49 +/- 0.68 10.73 +/- 1.08 9.36 +/- 1.29 10.66 +/- 0.76 Decatur Street DR11 Dirt road off Mackall & 11 .28 +/- 1.71 10.95 +/- 0.82 10.15 +/- 1.11 11 .35 +/- 0.80 Parren Rd DR12 Mackall & Bowen Rds 10.86 +/- 1.79 10.98 +/- 0.89 9.98 +/- 0.78 10.95 +/- 0.61 DR13 Mackall Rd , near 11.50 +/- 1.47 12.36 +/- 0.99 10.80 +/- 1.49 12.75 +/- 0.45 Wallville 54

January I - December 31 , 2016 Docket Nos. 50-3 17/50-3 18172-8 Table B-12 Direct Radiation (Results in Units of mR/90 days+/- 2cr)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter DR14 Rodney Point 12.13 +/- 1.11 11 .98 +/- 1.00 11 .32 +/- 1.36 12.23 +/- 0.64 DR15 Mill Bridge & Turner 11.86 +/- 1.33 11 .50 +/- 1.24 10.51 +/- 1.12 11.98 +/- 0.39 Rds DR16 Across from Appeal 10.79 +/- 0.92 10.78 +/- 1.28 9.39 +/- 0 .91 10.64 +/- 1.12 School DR17 Cove Point & Little 12.70 +/- 1.06 13.90 +/- 1.74 11 .70 +/- 1.40 Cove Point Rds DR18 Cove Point 9.54 +/- 0.60 9.91 +/- 1.02 8.75 +/- 0.92 10.18 +/- 0.76 DR19 Long Beach 10.46 +/- 0.83 10.75 +/- 0.91 9.58 +/- 0.65 11.11 +/- 0.58 DR20 On site, near shore 13.48 +/- 0.91 13.39 +/- 0.94 12 .42 +/- 0.80 14.02 +/- 1.09 DR21* EOF 12.05 +/- 1.31 12.43 +/- 0.82 11 .68 +/- 0.62 13.00 +/- 0.96 DR22

• Solomons Island 11.43 +/- 0.57 11.42 +/- 0.66 10.21 +/- 0.49 11 .82 +/- 0.81 DR23* Taylors Island 15.11 +/- 2.10 15.32 +/- 0.74 13.52 +/- 1.40 15.45 +/- 1.15 DR30 MET Station 11 .71 +/- 0.93 11 .65 +/- 0.75 10.44 +/- 1.15 11 .51 +/- 0.77 SFDR01 SW of ISFSI 16.31 +/- 1.60 16.95 +/- 1.02 15.26 +/- 1.57 16.73 +/- 1.40 SFDR02 NNWof ISFSI 18.65 +/- 2.38 19.72 +/- 1.60 17.00 +/- 2.56 19.07 +/- 2.90 SFDR03 North of ISFSI 35.87 +/- 7.14 43.16 +/- 5.96 36.06 +/- 5.66 35 .14 +/- 3.74 TLD miss ing

' Control Location 55

January I - December 3 1, 20 16 Docket OS. 50-317/50-318/72-8 Table B-12 Direct Radiation (Results in Units of mR/90 days+/- 2cr)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter SFDR04 NE of ISFSI 35.62 +/- 6.55 33.23 +/- 4.33 30.12 +/- 5.50 33 .92 +/- 4.95 SFDR05 East of ISFSI 24.60 +/- 4.97 23.13 +/- 4.86 21 .01 +/- 3.35 24.94 +/- 6.18 SFDR06 ESE of ISFSI 18.94 +/- 1.99 19.91+/- 1.82 16.21 +/- 1.52 20 .71 +/- 2.09 SFDR07" Visitor's Center 12.51+/- 1.31 12.48 +/- 0.48 10.65 +/- 0.59 11 .93 +/- 1.24 SFDR08 NNWof ISFSI 26 .66 +/- 5.17 25 .50 +/- 5.11 21 .62 +/- 2.64 27 .16 +/- 4.51 SFDR09 SSE of ISFSI 21 .33 +/- 4.61 22.57 +/- 1.86 24 .10 +/- 5.13 33.38 +/- 5.67 SFDR10 NW of ISFSI 32.81 +/- 3.40 33.71 +/- 7.56 25.04 +/- 6.21 28 .80 +/- 7.33 SFDR11 WNWISFSI 24.09 +/- 4.37 24 .43 +/- 5.20 24.95 +/- 3.62 25.54 +/- 1.98 SFDR12 WSWoflSFSI 41 .14 +/- 8.46 44 .02 +/- 8.93 33.52 +/- 7.23 42 .69 +/- 1.94 SFDR13 South of ISFSI 23.99 +/- 6.70 27 .67 +/- 4.87 24 .46 +/- 6.95 35 .21+/- 5.16 SFDR14 SE of ISFSI 35 .77 +/- 13.86 34.09 +/- 6.12 34.71 +/- 16.76 33 .35 +/- 4.97 SFDR15 ENE of ISFSI 27 .15 +/- 4.55 27.59 +/- 6.33 23 .28 +/- 5.26 25.13 +/- 6.69 SFDR16 SSW of ISFSI 43 .04 +/- 5.38 44 .58 +/- 7.37 41 .69 +/- 4.25 40 .76 +/- 5.97 SFDR17 NNE of ISFSI 41 .07 +/- 8.50 41 .15 +/- 4.71 36.79 +/- 7.19 41 .17 +/- 4.89 SFDR18 West of ISFSI 38.45 +/- 6.14 41 .20 +/- 4.28 34 .18 +/- 6.26 39 .83 +/- 3.56 Control Locati on 56

January 1 - December 31 , 2016 Docket Nos . 50-317/50-318/72-8 APPENDIX C Quality Assurance Program Appendix C is a summary of Exelon Industrial Services (EIS) Laboratory' s quality assurance program. It consists of Table C-1 which is a compilation of the results of the EIS Laboratory' s participation in an interlaboratory com pari so n program w ith Environmental Resource Associates (ERA) located in Arvada, Co lorado and Analytics, Inc. located in Atlanta, Georgia. It also includes Table C-2, which is a compilation of the resu lts of the EIS laboratory' s participation in a split sample program with Teledyne Brown Engineering located in Knoxville, Tennessee, and Table C-3 , which is a li st of typical MD As achieved by Teledyne Brown for Gamma Spectroscopy.

All the EIS Laboratory' s results contained in Table C-1 generall y agree w ith the intercompari son laboratory's resu lts w ithin the range of +/-2 CJ of each other. In addition, all the sets of intercompari son results in the table are in full agreement when they were further evaluated usin g the N RC Reso lution Test Criteria 1* The uncerta inti es for the Constellation Energy laboratory' s resu lts and Analytics ' results are +/-2CJ while the ERA laboratory' s uncertainty is based on USEPA guidelines 2 .

All the results co ntained in Table C-2 agree within th e range of +/-2CJ of each other with their respective EIS Laboratory original, replicate and/or Teledyne Brown Engineeri ng' s sp lit laboratory samples.

The comparisons of two samp les involving Cs- 13 7 res ults: bottom sed iment samp le at WBS4 collected on 6/14/ 16 and soi l at SFS5 collected on 9/26/ 16 were in full agreement. The origi na l and replicate analysis of the bottom sediment sampl e at WBS4 collected on 6/ 14/ 16 agrees w ithin +/-2 CJ of each other. Low level Cs- 137 was observed in the comparison set for SFS5 collected on 9/26/ 16 in the original, duplicate and sp lit lab sample. Res ults are in agreement w ithin +/-2 CJ of each other.

Other samples whose nature ge neral ly preclude sample splitting are marked " **" in the Split Analysis column.

1 NRC Inspection Ma nua l, Inspectio n Procedure 84750, March 15, 1994 2

National Standards fo r Water Pro fi c iency Testin g Studi es C riteri a Document, December 199 8 57

January 1 - December 3 1, 20 16 Docket Nos. 50-3 17/50-3 18/72-8 TABLE OF CONTENTS - ANALYTICAL RESULTS Table T itl e Page C-1 Results of Parti cipation in Cross Check Programs .... ..... ........ .. .. ... ..... ...... ..... ... ......... ... ........... 59 C-2 Results of Quality Assurance Program ........... ..... ........ .. .... .. ..... .... ........ ......... .. .... .... .... .......... .. 61 C-3 Teledyne Brown Engineerin g' s Typical MDAs fo r Gamma Spectro metry .. .. ... ... ............... ... 73 58

January I - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Table C-1 Results of Participation in Cross Check Programs Reported Sample Type and Cross Check Lab Sample Date Isotope Observed Laboratory's Units Results Results 03/17/16 Air Iodine - pCi/m;j 1-131 76.0 +/- 7.0 88.3 +/- 1.5 03/17/16 Milk - pCi/L Co-60 259 +/- 9.0 244 +/- 4.1 Zn-65 195 +/-17 .0 179 +/- 3.0 1-131 89.0 +/- 24.0 82.2 +/- 1.4 Cs-137 164 +/- 10.0 161 +/- 2.7 Fe-59 145 +/- 13.0 131 +/- 2.2 Cs-134 111 +/-6.0 130 +/- 2.2 Ce-141 104 +/- 10.0 98.4 +/- 1.6 Cr-51 243 +/- 53 .0 243 +/- 4.1 Co-58 115+/-9.0 117+/-2.0 Mn-54 127 +/- 9.0 117 +/- 2.0 03/17/16 Water - pCi/L Gross Beta 239 +/- 3.2 251 +/- 4.2 04/04/16 Water - pCi/L H-3 7748 7840 04/04/16 Water - pCi/L Ba-133 51 .6 +/- 5.0 58.8 Cs-137 77.5 +/- 7.0 78.4 Cs-134 40.5 +/- 4.0 43.3 Zn-65 234 +/- 19.0 214 Co-60 101 +/-6.0 102 04/04/16 Water - pCi/L 1-131 25.6 +/- 4.1 26 .6 3

06/06/16 Air Filter - pCi/m Fe-59 93.0 +/- 11.0 85.7 +/- 1.4 Co-58 94.0 +/- 10.0 100 +/- 1.7 Co-60 125+/-9.0 121 +/- 2.0 Zn-65 189+/-21.0 166 +/- 2.8 Mn-54 92.0 +/- 9.0 88.3 +/- 1.5 Cr-51 204 +/- 35 .0 194 +/- 3.2 Cs-137 82.0 +/- 9.0 84.8 +/- 1.4 Ce-141 97.0 +/- 6.0 97.6 +/- 1.6 Cs-134 99.0 +/- 6.0 123 +/- 2.1 59

January l - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Table C-1 Results of Participation in Cross Check Programs Reported Sample Type and Cross Check Lab Sample Date Isotope Observed Laboratory's Units Results Results 06/06/16 Water - pCi/L Cr-51 299 +/- 90 .0 292 +/- 48.7 Ce-141 148 +/- 15.0 147 +/- 2.5 Cs-137 129 +/- 14.0 128 +/- 2.1 Cs-134 188+/-15.0 185 +/- 3.1 Zn-65 265 +/- 33 .0 249 +/- 4.2 Co-60 191 +/- 14.0 183 +/- 3.1 Co-58 148 +/- 16.0 151 +/- 2.5 Fe-59 140 +/-19.0 129 +/- 2.2 Mn-54 139+/-16.0 133 +/- 2.2 1-131 99.0 +/- 15 96.7 +/- 1.6 06/06/16 Water - pCi/L Gross Beta 237 +/- 3 249 +/- 4 07/11/16 Water - pCi/L H-3 12411 12400 3

09/15/16 Air Filter - pCi/m Gross Beta 64.20 +/- 2.0 67.2 +/-1.1 3

09/19/16 Air Filter - pCi/m Zn-65 1202 +/- 46 .0 1202 Cs-134 470 +/- 16.0 614.0 Cs-137 1077 +/- 28.0 1170 Co-60 870 +/- 20 .0 900 Am-241 53.3 +/- 17.0 42 .3 10/07/16 Water - pCi/L Co-60 67.7 +/- 6.0 64.5 Zn-65 258 +/- 21 .0 245 Cs-134 82.0 +/- 7.0 81 .8 Cs-137 214 +/- 12.0 210 Ba-133 52 .8 +/- 6.0 54 .9 10/07/16 Water - pCi/L 1-131 27.7 +/- 7.0 26.3 60

January 1 - December 31, 2016 Docket Nos. 50-317/50-318/72-8 Table C-1 Results of Participation in Cross Check Programs Reported Sample Type and Cross Check Lab Sample Date Isotope Observed Laboratory's Units Results Results 12/01/16 Air Iodine - pCi/m:i 1-131 84.0 +/- 5.0 97.0 +/- 1.6 12/01/16 Milk - pCi/L Co-60 185 +/- 16.0 178 +/- 3.0 Zn-65 256 +/- 39 .0 244 +/- 4.1 1-131 95.0 +/- 16.0 97.4 +/- 1.6 Cs-137 135+/-19.0 126 +/- 2.1 Fe-59 147 +/- 25.0 125 +/- 2.1 Cs-134 157+/- 14.0 178 +/- 3.0 Ce-141 147+/- 18.0 143 +/- 2.4 Cr-51 254 +/- 84 .0 280 +/- 4.7 Co-58 138 +/- 18.0 146 +/- 2.4 Mn-54 122 +/- 17.0 129 +/- 2.2 12/01 /16 Water - pCi/L Gross Beta 314 +/- 3.0 293 +/- 4.9 3

12/01 /16 Air Filter - pCi/m Fe-59 97 .0 +/- 12.0 90.1 +/- 1.5 Co-58 99 .0 +/- 10.0 106 +/- 1.8 Co-60 130 +/- 9.0 128 +/- 2.1 Zn-65 202 +/- 22.0 176 +/- 2.9 Mn-54 97 .0 +/- 10.0 93 .3 +/- 1.6 Cr-51 107 +/- 7.0 103 +/- 1.7 Cs-137 91 .0 +/- 9.0 91 .1+/- 1.5 Ce-141 107.0 +/- 7.0 103 +/- 1.7 Cs-134 107.0 +/- 7.0 129 +/- 2.2 See discussion at the beginning of the Appendi x 61

January I - December 3 I , 20 16 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Analysis Analysis 2 3 Air Filter - A 1 01/04/16 Gross Beta 10* pCi/m 1.6 +/- 0.1 1.6 +/-0.1 Air Filter - A2 01/04/16 Gross Beta 10** pCi/mJ 1.6 +/- 0.1 1.5 +/-0.1 Air Filter - A3 01/04/16 Gross Beta 10*' pCi/mJ 1.4 +/- 0.1 1.6 +/- 0.1 Air Filter - A4 01/04/16 Gross Beta 10*' pCi/mJ 1.5 +/- 0.1 1.5 +/- 0.1 Air Filter - A5 01/04/16 Gross Beta 10*' pCi/mJ 1.4 +/- 0.1 1.5 +/- 0.1 Air Filter - SFA1 01/04/16 Gross Beta 10*' pCi/m J 1.6 +/- 0.1 1.6 +/- 0.1 Air Filter - SFA2 01/04/16 Gross Beta 10*' pCi/mJ 1.5 +/- 0.1 1.6 +/-0.1 Air Filter - SFA3 01/04/16 Gross Beta 10*' pCi/mJ 1.6 +/- 0.1 1.7 +/- 0.1 Air Filter - SFA4 01/04/16 Gross Beta 10*' pCi/mJ 1.6 +/- 0.1 1.7 +/- 0.1 3

Air Iodine - A 1 01/04/16 1-131 pCi/m <MDA <MDA Air Iodine - A2 01/04/16 1-131 pCi/m J <MDA <MDA Air Iodine - A3 01/04/16 1-131 pCi/m J <MDA <MDA Air Iodine - A4 01104/16 1-131 pCi/m J <MDA <MDA Air Iodine - A5 01/04/16 1-131 pCi/m J <MDA <MDA 3

Air Filter - A 1 02/01/16 Gamma pCi/m <MDA <MDA <MDA Air Filter - A2 02/01/16 Gamma pCi/mJ <MDA <MDA <MDA Air Filter - A3 02/01/16 Gamma pCi/m J <MDA <MDA <MDA Air Filter - A4 02/01/16 Gamma pCi/m J <MDA <MDA <MDA Air Filter - A5 02/01/16 Gamma pCi/m J <MDA <MDA <MDA Air Filter - SFA1 02/01/16 Gamma pCi/m J <MDA <MDA <MDA Air Filter - SFA2 02/01/16 Gamma pCi/mJ <MDA <MDA <MDA Air Filter - SFA3 02/01/16 Gamma pCi/mJ <MDA <MDA <MDA Air Filter - SFA4 02/01/16 Gamma pCi/mJ <MDA <MDA <MDA 62

January I - D ecember 3 I , 2016 Docket Nos. 50-317/ 50-318/ 72-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Analysis Analysis Air Filter - A 1 02/08/1 6 Gross Beta 10*' pCi/m J 1.S +/- 0.1 1.S +/- 0.1 Air Filter - A2 02/08/16 Gross Beta 10*' pCi/m J 1.4 +/- 0.1 1.4+/- 0.1 Air Filter - A3 02/08/16 Gross Beta 10*' pCi/m J 1.S +/- 0.1 1.S+/- 0.1 Air Filter - A4 02/08/16 Gross Beta 10*' pCi/m J 1.S +/- 0.1 1.S +/- 0.1 Air Filter - AS 02/08/16 Gross Beta 10*' pCi/m J 1.6 +/- 0.1 1.6 +/- 0.1 Air Filter - SFA 1 02/08/16 Gross Beta 10*' pCi/m J 1.S +/- 0.1 1.6 +/- 0.1 Air Filter - SFA2 02/08/16 Gross Beta 10*' pCi/m J 1.3 +/- 0.1 1.4 +/- 0.1 Air Filter - SFA3 02/08/16 Gross Beta 10*' pCi/m J 1.4 +/- 0.1 1.S +/-0.1 Air Filter - SFA4 02/08/16 Gross Beta 10*' pCi/m J 1.4 +/- 0.1 1.6 +/- 0.1 3

Air Iodine - A 1 02/08/16 1-1 31 pCi/m <MDA <MOA Air Iodine - A2 02/08/16 1-131 pCi/m J <MDA <M DA Air Iodine - A3 02/08/16 1-131 pC i/mJ <MDA <MDA Air Iodine - A4 02/0 8/16 1-131 pCi/m J <MDA <MDA Air Iodine - AS 02/0 8/1 6 1-131 pCi/m J <MOA <MDA Air Filter - A 1 03/1 4/16 Gross Beta 10*2 pCi/m 3 1.8 +/-0 .1 1.7 +/- 0.1 Air Fi lter - A2 03/1 4/16 Gross Beta 10*' pCi/mJ 1.8 +/- 0.1 1.7 +/- 0.1 Air Filter - A3 03/14/16 Gross Beta 10*' pCi/m J 1.8 +/- 0.1 1.7 +/- 0.1 Air Filter - A4 03/14/16 Gross Beta 10*' pCi/m J 1.6 +/- 0.1 1.7 +/- 0.1 Air Filter - AS 03/14/16 Gross Beta 10*' pCi/m J 1.6 +/- 0.2 1.7 +/- 0.2 Air Filter - SFA1 03/14/16 Gross Beta 10*' pCi/mJ 1.7 +/-0 .1 1.7 +/-0 .1 Air Filter - SFA2 03/1 4/16 Gross Beta 10*' pCi/mJ 1.7 +/- 0.1 1.7 +/-0 .1 Air Filter - SFA3 03/14/16 Gross Beta 10*' pCi/mJ 1.7 +/- 0.1 1.7 +/- 0.1 Air Filter - SFA4 03/14/16 Gross Beta 10*' pCi/m J 1.6 +/- 0.1 1.7 +/- 0.1 63

January I - December 31 , 2016 Docket Nos. 50-317/50-3 18/72-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Analysis Analysis Air Filter - A 1 03/28/16 Gross Beta 10*' pCi/m J 1.6 +/- 0.1 1.6 +/- 0.1 Air Filter - A2 03/28/16 Gross Beta 10*' pCi/mJ 1.S +/- 0.1 1.6 +/- 0.1 Air Filter - A3 03/28/16 Gross Beta 10*' pCi/m J 1.6 +/- 0.1 1.7 +/- 0.1 Air Filter - A4 03/28/16 Gross Beta 10*' pCi/mJ 1.6 +/- 0.1 1.6 +/- 0.1 Air Filter - AS 03/28/16 Gross Beta 10"' pCi/m J 1.7 +/- 0.1 1.7 +/-0.1 Air Filter - SFA 1 03/28/16 Gross Beta 10*' pCi/m J 1.7 +/- 0.1 1.7 +/-0.1 Air Filter - SFA2 03/28/16 Gross Beta 10"' pCi/mJ 1.6 +/- 0.1 1.S +/- 0.1 Air Filter - SFA3 03/28/16 Gross Beta 10*' pCi/mJ 1.6 +/- 0.1 1.7 +/- 0.1 Air Filter - SFA4 03/28/16 Gross Beta 10*' pCi/mJ 1.S +/- 0.1 1.7+/-0.1 Air Iodine - A 1 03/29/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A2 03/29/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A3 03/29/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A4 03/29/16 1-131 pCitm* <MDA <MDA Air Iodine - AS 03/29/16 1-131 pCi/mJ <MDA <MDA Oysters - IA3 03/29/16 Gamma pCi/kg <MDA <MDA <MDA Oysters - IA6 03/29/16 Gamma pCi/kg <MDA <MDA <MDA Bay Water - WA 1 04/01/16 Gamma pCi/L <MDA <MDA Bay Water - WA2 04/01/16 Gamma pCi/L <MDA <MDA Air Filter - A 1 04/04/16 Gross Beta 10*2 pCi/m 3 1.9 +/- 0.1 1.8 +/- 0.1 Air Filter - A2 04/04/16 Gross Beta 10*' pCi/m J 1.9 +/- 0.1 1.7 +/- 0.1 Air Filter -A3 04/04/16 Gross Beta 10*' pCitm

• 1.9 +/- 0.1 1.8 +/- 0.1 64

January 1 - Dece mber 3 1, 2016 Docket Nos. 50-3 17/50-3 18/72-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Analysis Analysis Air Filter - A4 04/04/16 Gross Beta 10*' pCi/m J 1.8 +/- 0.1 1.8 +/- 0.1 Air Filter - A5 04/04/16 Gross Beta 10*' pCi/m J 1.9 +/- 0.1 2.0 +/- 0.1 Air Filter - SFA 1 04/04/1 6 Gross Beta 10*' pCi/m J 1.9 +/-0 .1 1.7 +/-0.1 Air Filter - SFA2 04/04/16 Gross Beta 10*' pCi/m J 1.8 +/- 0.1 1.7 +/- 0.1 Air Filter - SFA3 04/04/16 Gross Beta 10*' pCi/mJ 1.9 +/- 0.1 1.9 +/- 0.1 Air Filter - SFA4 04/04/16 Gross Beta 10*' pCi/m J 1.9 +/- 0.1 1.7 +/- 0.1 Shoreline sediment - WB1 04/05/16 Gamma pCi/kg <MDA <MDA Air Iodine - A 1 04/18/16 1-131 pCi/m 3 <MDA <MDA Air Iodine - A2 04/18/16 1-131 pCi/m J <MDA <MDA Air Iodine - A3 04/18/16 1-131 pCi/m J <MDA <MDA Air Iodine - A4 04/18/16 1-1 31 pCi/mJ <MDA <MDA Air Iodine - A5 04/18/16 1-131 pCi/m J <MDA <MDA Air Filter - A 1 05/09/16 Gross Beta 10*2 pCi/m 3 0.9 +/- 0.1 0.8 +/- 0.1 Air Filter - A2 05/09/16 Gross Beta 10*' pCi/mJ 0.9 +/- 0.1 0.8 +/- 0.1 Air Filter - A3 05/09/16 Gross Beta 10*' pCi/m J 0.9 +/- 0.1 0.9 +/- 0.1 Air Filter - A4 05/09/16 Gross Beta 10*' pCi/mJ 0.9 +/- 0.1 0.9 +/- 0.1 Air Filter - A5 05/09/16 Gross Beta 10*' pCi/m J 1.1+/- 0.1 0.9 +/-0.1 Air Filter - SFA1 05/09/16 Gross Beta 10*' pCi/mJ 0.9 +/- 0.1 0.8 +/- 0.1 Air Filter - SFA2 05/09/16 Gross Beta 10*' pCi/m J 1.0 +/- 0.1 0.9 +/- 0.1 Air Filter - SFA3 05/09/16 Gross Beta 10*' pCi/m J 0.8 +/- 0.1 0.7 +/- 0.1 Air Filter - SFA4 05/09/1 6 Gross Beta 10*' pCi/m J 0.8 +/- 0.1 0.8 +/- 0.1 65

January I - December 31 , 2016 Docket Nos. 50-317/50-318172-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Analysis Analysis 3

Air Iodine - A 1 OS/09/16 1-131 pCi/m <MDA <MDA Air Iodine - A2. OS/09/16 1-131 pCi/m, <MDA <MDA Air Iodine - A3 OS/09/16 1-1 31 pCi/m, <MDA <MDA Air Iodine - A4 OS/09/16 1-131 pCi/m, <MDA <MDA Air Iodine - AS OS/09/16 1-131 pCi/m, <MDA <MDA Air Filter - A 1 06/06/16 Gross Beta 10*2 pCi/m 3 1.4 +/- 0.1 1.4 +/- 0.1 Air Filter - A2. 06/06/16 Gross Beta 10*' pCi/m' 1.5 +/- 0.1 1.4 +/- 0.1 Air Filter - A3 06/06/16 Gross Beta 10** pCi/m, 1.3 +/- 0.1 1.4+/- 0.1 Air Filter - A4 06/06/16 Gross Beta 10** pCi/m, 1.4 +/- 0.1 1.3 +/- 0.1 Air Filter - AS 06/06/16 Gross Beta 10" pCi/m, 1.S +/- 0.1 1.S +/-0 .1 Air Filter - SFA 1 06/06/16 Gross Beta 10" pCi/m, 1.3 +/- 0.1 1.2 +/- 0.1 Air Filter - SFA2 06/06/16 Gross Beta 10*' pCi/m, 1.3 +/- 0.1 1.2 +/- 0.1 Air Filter - SFA3 06/06/16 Gross Beta 10" pCi/m, 1.3 +/- 0.1 1.3 +/- 0.1 Air Filter - SFA4 06/06/16 Gross Beta 10*' pCi/m, 1.4 +/- 0.1 1.3 +/- 0.1 3

Air Iodine - A 1 06/06/16 1-131 pCi/m <MDA <MDA Air Iodine - A2 06/06/16 1-131 pCi/m, <MDA <MDA Air Iodine - A3 06/06/16 1-131 pCi/m, <MDA <MDA Air Iodine - A4 06/06/16 1- 131 pCi/m, <MDA <MDA Air Iodine - AS 06/06/16 1-131 pC i/m, <MDA <MDA 66

January I - December 31 , 2016 Docket Nos. 50-3 17/50-3 18/72-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Analysis Analysis Misc ground coverage - SFB1 06/07/16 Gamma pCi/kg <MDA <MDA Misc ground coverage - SFB2 06/07/16 Gamma pCi/kg <MDA <MDA Soil- SFS1 06/07/16 Gamma pCi/kg <MDA <MDA <MDA Soil - SFS2 06/07/16 Gamma pCi/kg <MDA <MDA <MDA Bottom sediment - WBS2 06/14/16 Gamma pCi/kg <MDA <MDA <MDA Bottom sediment - WBS4 06/14/16 Cs-137 pCi/kg 148.1 +/- 66.0 119.4 +/- 47 .6 Oysters - IA3 06/14/16 Gamma pCi/kg <MDA <MDA <MDA Oysters - IA6 06/14/16 Gamma pCi/kg <MDA <MDA <MDA Air Filter - A 1 06/27/16 Gamma pCi/m J <MDA <MOA <MDA Air Filter - A2 06/27/16 Gamma pC i/m J <MOA <MDA <MDA Air Filter - A3 06/27/16 Gamma pCi/mJ <MDA <MDA <MDA Air Filter - A4 06/27/16 Gamma pCi/m J <MDA <MDA <MDA Air Filter - AS 06/27/16 Gamma pCi/mJ <MDA <MDA <MDA Air Filter - SFA1 06/27/16 Gamma pCi/m J <MDA <MDA <MDA Air Filter - SFA2 06/27/16 Gamma pCi/m J <MDA <MDA <M DA Air Filter - SFA3 06/27/16 Gamma pCi/mJ <MDA <MDA <M DA 3

Air Filter - SFA4 06/27/16 Gamma pCi/m <MDA <MDA <MDA 67

January 1 - December 3 1, 20 16 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Analysis Analysis Brussels sprouts - IB1 06/28/16 Gamma pCi/kg <MDA <MDA <MDA Brussels sprouts - IB4 06/28/16 Gamma pCi/kg <MDA <MDA <MDA Brussels sprouts - IB7 06/28/16 Gamma pCi/kg <MDA <MDA <MDA Bay Water - WA 1 07/01/16 Gamma pCi/L <MDA <MDA <MDA Bay Water - WA2 07/01/16 Gamma pCi/L <M DA <MDA <MDA Air Iodine - A 1 07/04/16 1-131 pCi/m J <MDA <MDA Air Iodine - A2 07/04/16 1-131 pCi/m J <MDA <MDA Air Iodine - A3 07/04/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A4 07/04/16 1-131 pCi/mJ <MDA <MDA Air Iodine - AS 07/04/16 1-131 pCi/mJ <MDA <MDA Collards - IB 1 07/26/16 Gamma pCi/kg <MDA <MDA <MDA Collards - IB4 07/26/16 Gamma pCi/kg <MDA <MDA <MDA Collards - IB7 07/26/16 Gamma pCi/kg <MDA <MDA <MDA Oysters - IA3 08/17/16 Gamma pCi/kg <MDA <MDA <MDA Oysters - IA6 08/17/16 Gamma pCi/kg <MDA <MDA <MDA Striped bass - IA 1 08/17/16 Gamma pCi/kg <MDA <MDA <MDA 68

January I - December 3 I, 2016 Docket Nos. 50-3 17/50-318172-8 Table C-2 Results of Quality Ass urance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analys is Date Analys is Ana lysis Ana lysis Striped bass - IA5 08/17/16 Gamma pCi/kg <MDA <MDA <MDA Air Iodine - A 1 08/22/16 1-131 pCi/m, <MDA <MDA Air Iodine - A2 08/22/16 1-131 pCi/m' <MDA <MDA Air Iodine - A3 08/22/16 1-13 1 pCi/m' <MDA <MDA Air Iodine - A4 08/22/16 1-131 pCi/m, <MDA <MDA Air Iodine - A5 08/22/16 1-131 pCi/m, <MDA <MDA Air Iodine - A 1 09/05/16 1-131 pCi/m, <MDA <MDA Air Iodine - A2 09/05/16 1-131 pCi/m J <MDA <MDA Air Iodine - A3 09/05/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A4 09/05/16 1-131 pC i/mJ <MDA <MDA Air Iodine - A5 09/05/16 1-131 pCi/mJ <MDA <MDA Misc ground coverage - SFB4 09/26/16 Gamma pCi/kg <MDA <MDA <MDA Misc ground coverage - SFB5 09/26/16 Gamma pCi/kg <MDA <MDA <MDA Soil - SFS4 09/26/16 Gamma pCi/kg <MDA <MDA <MDA Soil - SFS5 09/26/16 Cs-137 pCi/kg 73 .0 +/- 26 .7 64 .7 +/- 25.4 77 .9 +/- 26.4 69

January I - D ece mber 3 I , 20 16 D ocket Nos. 50-317/ 50-318/ 72-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Analysis Analysis Air Filter - A 1 10/10/16 Gross Beta 10*' pCi/mJ 1.5 +/-0.1 1.5 +/- 0.1 Air Filter - A2 10/10/16 Gross Beta 10*' pCi/mJ 1.6 +/- 0.1 1.6 +/- 0.1 Air Filter - A3 10/10/16 Gross Beta 10*' pCi/mJ 1.7 +/- 0.1 1.5 +/- 0.1 Air Filter - A4 10/10/16 Gross Beta 10** pCi/mJ 1.6 +/- 0.1 1.6+/- 0.1 Air Filter - A5 10/10/16 Gross Beta 10** pCi/mJ 1.5 +/- 0.1 1.6 +/- 0.1 Air Filter - SFA 1 10/10/16 Gross Beta 10"' pCi/mJ 1.4 +/- 0.1 1.3 +/- 0.1 Air Filter - SFA2 10/10/16 Gross Beta 10"' pCi/m J 1.4 +/- 0.1 1.4 +/- 0.1 Air Filter - SFA3 10/10/16 Gross Beta 10"' pCi/m J 1.4 +/-0 .1 1.3 +/- 0.1 Air Filter - SFA4 10/10/16 Gross Beta 10** pCi/m J 1.5 +/- 0.1 1.3 +/- 0.1 Air Iodine - A 1 10/10/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A2 10/10/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A3 10/10/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A4 10/10/16 1-131 pCi/m J <MDA <MDA Air Iodine - A5 10/10/16 1- 131 pCi/m J <MDA <MDA Oysters - IA3 10/20/16 Gamma pCi/kg <MDA <MDA <MDA Oysters - IA6 10/20/16 Gamma pCi/kg <MDA <MDA <MDA Shoreline sediment - WB1 10/25/16 Gamma pCi/kg <MDA <MDA <MDA Bay Water - WA 1 10/31/16 Gamma pCi/L <MDA <MDA <MDA Bay Water - WA2 10/31/16 Gamma pC i/L <MDA <MDA <MDA 70

January I - D ecember 3 I , 20 16 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Q uality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Ana lysis Date Analysis Ana lysis Analysis Air Iodine - A 1 11/07/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A2. 11/07/1 6 1-131 pCi/mJ <MDA <MDA Air Iodine - A3 11/07/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A4 11/07/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A5 11/07/16 1-131 pCi/mJ <MDA <MDA Air Filter - A 1 11/21/16 Gross Beta 10" pCi/mJ 3.8 +/- 0.2 4.0 +/- 0.2 3

Air Filter - A2 11/21/16 Gross Beta 10*2 pCi/m 3.8 +/- 0.2 3.7 +/- 0.2 Air Filter - A3 11/21/16 Gross Beta 10*2 pCi/m 3 3.3 +/- 0.2 3.4 +/- 0.2 Air Filter - A4 11/21116 Gross Beta 10*2 pCi/m 3 4.0 +/- 0.2 3.8 +/- 0.2 Air Filter - A5 11/21/16 Gross Beta 10*2 pCi/m 3 38.0 +/- 0.5 3.6 +/- 0.2 Air Filter - SFA 1 11 /21/1 6 Gross Beta 10*2 pCi/m 3 3.7 +/- 0.2 3.7 +/- 0.2 2 3 Air Filter - SFA2 11/21/16 Gross Beta 10* pCi/m 4.0 +/- 0.2 4.0 +/- 0.2 Air Filter - SFA3 11 /21/16 Gross Beta 10*2 pCi/m 3 3.7 +/- 0.2 3.7 +/- 0.2 Air Filter - SFA4 11/21/16 Gross Beta 10*2 pCi/m 3 3.5 +/- 0.2 3.5 +/- 0.2 Bay Water - WA 1 12/02/16 Gamma pCi/L <MDA <MDA Bay Water - WA2 12/02/16 Gamma pCi/L <MDA <MDA AirFilter-A1 12/05/16 Gross Beta 10*2 pCi/m 3 2.0 +/- 0.1 2.1+/- 0.1 2 3 Air Filter - A2. 12/05/16 Gross Beta 10* pCi/m 2.0 +/- 0.1 2.2 +/- 0.1 Air Filter - A3 12/05/16 Gross Beta 10*2 pCi/m 3 2.0 +/- 0.1 2.2 +/- 0.1 71

January I - December 3 1, 2016 Docket Nos. 50-3 17/50-3 18/72-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Ana lysis Analysis 2 3 Air Filter - A4 12/05/16 Gross Beta 10* pCi/m 2.2 +/- 0.1 2.4 +/- 0.1 Air Filter - A5 12/05/16 Gross Beta 10*2 pCi/m 3 2.0 +/- 0.1 2.2 +/- 0.1 Air Filter - SFA 1 12/05/16 Gross Beta 10*2 pCi/m 3 2.1+/-0.1 2.3 +/-0 .1 Air Filter - SFA2 12/05/16 Gross Beta 10*2 pCi/m 3 2.0 +/- 0.1 2.3 +/- 0.1 Air Filter - SFA3 12/05/16 Gross Beta 10*2 pCi/m 3 2.0 +/- 0.1 2.0 +/- 0.1 Air Filter - SFA4 12/05/16 Gross Beta 10*2 pCi/m 3 2.1 +/- 0.1 2.2 +/- 0.1 Air Iodine - A 1 12/05/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A2 12/05/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A3 12/05/16 1-131 pCi/m J <MDA <MDA Air Iodine - A4 12/05/16 1-131 pCi/mJ <MDA <MDA Air Iodine - A5 12/05/16 1-131 pCi/m J <MDA <MDA Gamma field - DR05 07/06/16 TLD mR/90 days 12.2 +/- 0.9 10.9 +/- 0.4 Gamma field - DR06 07/06/16 TLD mR/90 days 10.3 +/- 1.5 9.6 +/- 0.7 Gamma fie ld - DR07 07/06/16 TLD mR/90 days 10.6 +/- 0.8 9.8 +/- 0.6 Gamma field - DR08 07/06/16 TLD mR/90 days 14.6 +/- 2.0 14.0 +/- 1.0 Gamma field - DR09 07/06/16 TLD mR/90 days 10.4 +/- 1.3 9.7 +/- 0.5 Gamma field - DR10 07/06/16 TLD mR/90 days 10.6 +/-1 .1 10.1 +/- 1.1 Gamma field - DR11 07/06/16 TLD mR/90 days 10.8 +/- 0.8 11.0 +/- 0.9 72

January I - Dece mber 3 1, 20 16 Docket Nos. 50-317150-3 18/72-8 Table C-2 Results of Quality Assurance Program Sample Type of Original Replicate Sample Type and Location Result Units Split Analysis Date Analysis Ana lysis Analysis Gamma field - SFDR14 07/06/16 TLD mR/90 days 33.7 +/- 6.0 36.7 +/- 4.0 Gamma field - SFDR15 07/06/16 TLD mR/90 days 27.3 +/- 6.3 23.0 +/- 6 .7 Gamma field - DR29 07/06/16 TLD mR/90 days 14 .8+/- 1.1 14.2 +/- 1.5 Gamma field - DR31 07/06/16 TLD mR/90 days 15.9 +/- 1.0 14.7 +/- 1.3 Gamma field - DR0 5 01 /05/17 TLD mR/90 days 12.4 +/-1.4 11 .7 +/- 1.1 Gamma field - DR06 01/05/17 TLD mR/90 days 10.2 +/- 0.7 10.2 +/-1 .3 Gamma field - DR07 01 /05/17 TLD mR/90 days 10.3 +/- 0 .3 10.1 +/- 0.9 Gamma field - DR08 01/05/17 TLD mR/90 days 14.6 +/- 2.1 14.6 +/- 0 .9 Gamma field - DR09 01 /05/17 TLD mR/90 days 10.4 +/- 0.4 10.2 +/- 0 .7 Gamma field - DR10 01/05/17 TLD mR/90 days 10.5 +/- 0.8 10.7 +/- 0.6 Gamma field - DR11 01 /05/17 TLD mR/90 days 11 .2 +/- 0.8 10.9 +/- 0.8 Gamma field - SFDR 14 01 /05/17 TLD mR/90 days 33.0 +/- 4 .9 36.7 +/- 4.0 Gamma field - SFDR15 01 /05/17 TLD mR/90 days 24.9 +/- 6.6 23.0 +/- 6.7 Gamma field - DR29 01/05/17 TLD mR/90 days 14.1 +/- 0.8 14.2 +/- 1.5 Gamma field - DR31 01 /05/17 TLD mR/90 days 16.0 +/- 0.8 14.7 +/- 1.3 See di sc ussion at the beginni ng of the Appendi x

• • T he nature of these samples precluded splitting them with an independent laboratory.

73

January l - December 31 , 2016 Docket Nos. 50-3 17/50-318/72-8 TABLE C-3 Teledyne Brown Engineer ing' s Typical MDAs for Gamma Spectrometry Selected Bay Water Fish She llfi sh Sediment Vegetation Particul ates Nuclides pCi/I pCi/kg pCi/kg pCi/kg pCi/kg 10-3pCi/m3 H-3 175 Na-22 1 8 3 12 6 5 Cr-51 12 105 4 104 50 63 Mn-54 1 9 3 12 5 4 Co-58 1 9 4 9 4 5 Fe-59 3 28 9 24 10 12 Co-60 1 9 4 12 5 6 Zn-65 2 20 8 25 10 9 Nb-95 1 12 7 14 6 9 Zr-95 2 18 8 20 9 9 Ru-106 9 75 30 90 41 40 Ag-110m 1 10 10 10 5 4 Te-129m 16 131 60 162 79 95 1-131 4 65 30 35 22 74 Cs-134 1 8 4 10 5 4 Cs-137 1 9 4 10 5 4 Bala-140 3 32 15 25 14 36 Ce-144 7 40 16 54 26 18 74

January 1 - December 31 , 2016 Docket Nos. 50-317 /50-318/72-8 APPENDIXD Land Use Survey Appendix D contains the results of a Land Use Survey conducted around Calvert C liffs Nuclear Power Plant during this operating period. A table listing the raw data of this survey and a discussion of the results are included in this appendix. Table D-1 Land Use Survey Discussion Distance From Plant A Land Use Survey was conducted to identify, (mi les) within a distance of 5 miles, the location of the Sector Residence Garden nearest milk animal, the nearest residence, and SE 1.5 1.5 the nearest garden greater than 50 m2 in each of SSE 1.6 4.2 the nine sectors over land. A detailed description s 1.6 1.6 of the Land Use Survey is given in a separate SSW 1.5 1.4 document (Ref. 9). The position of the nearest SW I. I I. I residence and garden in each sector out to 5 miles WSW 1.3 1.8 is given in the adjacent table. There are no w 1.3 1.8 animals producing milk for human consumption WNW 2.7 2.7 within the 5 mile radius. The nearest garden NW 2.0 2.1 location has changed in the SSW, Wand WSW sectors si nce 2015 and are sti ll located within the 5-mile radius.

The closest residence is situated in the SW sector and the nearest garden is al so in the SW sector, which is one of the least prevalent wind directions . ln the S, SSE, and SE sectors, there is the highest probability of wind blowing from the direction of the plant. The two gardens used for vegetable samples by the REMP have been placed in the sectors with the highest D/Q. One sampling garden is located in the S sector at a distance of 0.4 miles, and another is situated near the site boundary in the SSE sector at a distance of 1.6 miles from the plant. These two sampling sites are considered good indicator locations for radioactive depositions around the plant.

The dose assessment using this operating period meteorological data was performed, and no significant impact from the plant was found .

75

January I - December 31 , 2016 Docket Nos. 50-317 /50-318/72-8 APPENDIXE Additional Samples and Analysis Results Appendix Eis a presentation of the analytical results for additional samples collected in the environs of CCNPP. These extra samples are not required by the ODCM (Ref. 6). Table E-1 lists the locations of all the additional samples and the remaining tables in this appendix provide the results. Some of these samples were collected and analyzed to maintain the historical continuity for samples and sampling pathways discontinued when the Environmental Technical Specifications were changed in March, 1985 .

Table E-4 through E-10 contain analytical results for samples taken from the various radiological pathways (i.e. , aquatic, atmospheric, terrestrial , and direct radiation) surrounding the plant. In general these results continue the historical trends previously observed in the official sites of the CCNPP REMP and ISFSI.

Table E-10 shows the direct radiation readings from TLDs placed at the perimeter of the Resin Storage Area which is a temporary waste resin storage and cask transfer area located to the west of the ISFSI facility. The TLD values are somewhat higher than those in the REMP program due to their proximity to this source of the radiation. However, when the direct radiation readings for the Resin Storage Area are compared with those from the ISFSI and Site Boundary TLDs, it is apparent that temporary storage of spent resin and cask transfers are having no significant, measurable effect on the environs surrounding CCNPP.

The NEI Industry Groundwater Protection Lnitiative was established to determine the potential impact nuclear power plants may have on the surrounding environment due to unplanned releases of radioactive liquids. Under the Groundwater Protection Initiative, groundwater monitoring is accomplished through routine sampling of the water table around the plant and analysis for gamma and tritium.

Groundwater samples were collected from 17 on-site piezometer tubes and three subsurface manholes in 2016. In addition four precipitation and two surface water locations were monitored. The Piezometers 1 I - 30 are shown on Figure E-1 , Site Map Groundwater Monitoring Wells. Figure E-2, Site Map R W Locations, shows precipitation collection sites . A piezometer tube is a shallow monitoring well which allows access to groundwater at a depth of approximately 40 feet beneath the site. Of the locations sampled , only # 11 piezometer, MH28 ,

and MH30 showed any plant-related activity. This activity was previously identified and evaluated in December of 2005. The activity consists of tritium originating from normal radiological waste discharges and was previously reported in the Annual Radioactive Release Reports. The tritium contamination is contained on site. No drinking water has been affected ;

the groundwater at this location does not impact any drinking water pathway. The 2016 analysis results for tritium are shown in Table E-1 I, and analysis results for gamma emitting radionuclides are shown in Table E-12.

76

January l - December 31, 2016 Docket Nos . 50-317/50-318/72-8 TABLE OF CONTENTS - ANALYTICAL RES UL TS Table Title Page E-1 Locations of Non-Tech Spec Environmental Sampling Stations for Calvert Cliffs Nuclear Power Plant .. .. ..... .... .. ............................................................ ..................................... .............. 78 E-2 Synopsis of 2016 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environmental Monitoring Program .. ........ ......... ............ .. ..... ....... ... .. ... ......... .. ................. .. ... .. 79 E-3 Annual Summary for Calvert Cliffs Nuclear Po wer Plant Units l & 2 Non-Tech Spec Radiological Environmental Monitoring Program ....... ........... .......... ........ .... ........ ............ ...... 80 E-4 Concentration of Gamma Emitters in Bottom Sediment.. ....................................................... 81 E-5 Concentration of Iodine-131 in Filtered Air ........ .......... ............. ................ ............ ........ ........ .82 E-6 Concentration of Beta Emitters in Air Particulates ................ .... ............ ..... ........ .................. ... 84 E-7 Concentration of Gamma Emitters in Air Particulates ............ ..... .......... ..................... ..... ....... 86 E-8 Concentration of Tritium and Gamma Emitters in Taylors Island Well Water ....................... 87 E-9 Direct Radiation ... ........... ...... .............................. ........... ... .... ...... .... ................. ....................... .88 E-10 Direct Radiation from Resi n Storage Area .............. ...... .............. .... .............. .......................... 89 E-11 Concentration of Tritium in Groundwater ............................... .... ............ ................................ 90 E-12 Gross Concentration of Gamma Emitters in Groundwater ................................ ...................... 92 Figure Title Page E-l Site Map Groundwater Monitoring Wells .................................. .. .............. .... .... ............ ........ .94 E-2 Site Map RW Locations .... ......... ....................................... ................................... ............ ...... .. 95 77

January 1 - December 3 1, 2016 Docket Nos. 50-317150-318/72-8 TABLE E-1 Locations of Non-Tech Spec Environmental Sampling Stations for Calvert Cliffs Nuclear Power Plant Station Description Di stance' Direction' (KM) (Miles (Sector)

A6 Long Beach 4.4 2.7 NW A7 Tavlors Island Anderson's Prooertv 12.6 7.8 ENE A8 Cambridge U of MD Estuarine Center 32.0 19.9 NE DR24 Route 4 and Parran Road 3.0 1.9 SW DR25 Ca mo Conov Guard House 1.0 0.6 s DR26 Route 235 & Clarks Landing Rd . 20.5 12.7 SW DR27 Route 231 & Route 4 23 .0 14.3 NW DR28 Tavlors Island Emergencv Siren #35 12.3 7.6 ENE DR29 Tavlors Island Emergency Siren #38 12.5 7.8 E DR31 Cambridge U of MD Estuarine Center 32 .0 19.9 NE DR32 Twining Prooerty, Taylors Island 12.3 7.6 NE DR33 P.A. Ransome Property Taylors Island 14.8 9.2 ESE DR34 Shoreline at Barge Road 0.2 0.1 NE OSGDRl North of Old Steam Generator Storage Facility 0.3 0.2 SW OSGDR2 West of Old Steam Generator Storage Facility 0. 3 0.2 SW RPDR5 Resin Storage Area - North Fence Lower 0.7 0.4 SW RPDR6 Resin Storage Area - North Fence Upper 0.7 0.4 SW RPDR7 Resin Storage Area - West Fence Right 0.7 0.4 SW RPDR8 Resin Storage Area - West Fence Left 0.7 0.4 SW RPDR9 Resin Storage Area - South Fence Upper 0.7 0.4 SW RPDRlO Resin Storage Area - South Fence Lower 0.7 0.4 SW RPDRll Resin Storage Area - East Fence Left 0.7 0.4 SW RPDR12 Resin Storage Area - East Fence Right 0.7 0.4 SW WBS2 Discharge Area 0.3 0.2 N WBS4 Camp Conoy/Rocky Point 3.0 1.9 SE WWl Taylors Island, Anderson's Property 12.6 7.8 ENE 1

Distance and direct ion from the central point between the two containment buildings.

78

January I - December 3 I, 2016 Docket Nos. 50-317/50-318/72-8 Table E-2 Synopsis of 2016 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environmental Monitoring Program Sample Type Sampling Number of Number Analysis Analysis Number 1 1 Frequency Locations Collected Frequency Analyzed Aquatic Environment Bottom Sediment Q 2 4 Gamma Q 4 Atmospheric Environment Air Iodine' w 7 371 1-131 w 371 Air Particulates' w 3 159 Gross Beta w 159 Gamma MC 36 Direct Radiation Ambient Radiation Q 20 480 TLD Q 480 Terrestrial Environment Ground water M 12 Gamma M 12 H3 M 12 W=weekly, M=monthly, Q=quarterly, SA=semiannual, A=annual, C=composi te 2

The collection device contai ns Charcoal 3

Beta counting is performed after >72 hour decay, Gamma spectroscopy performed on monthly composites of wee kly samples 79

January I - December 3 1, 20 16 Docket Nos. 50-3 17/50-318/72-8 Table E-3 A nnual Summary for Calvert Cliffs N uclear Power Plant U nits I & 2 Non-Tech Spec Radiological Environmental Monitoring Program Medium or Type and Total Lower Limit of Indicator Location with Highest Annual Control Locations 1

Pathway Sampled Number of Detection (LLD) Locations MEfan Highest Annual Mean (F) I Range Mean (F)/Ra nge (Unit of Analyses (F)/Ra nge Mean Measurement) Performed Name/Distanfe &

Direction Aquatic Environment Bottom Sediment Gamma (4) 17 Camp Conoy/ 148 (1/2) 148 (1/2)

(pCi/kg) Cs-13 7 Rocky Point (148) (148)

WBS4 Atmospheric Environment Air Particulates Gross Beta (159) 0.5 1.9 (106/106) LONG BEACH LB 1.9 (53/53) 1.8 (53/53)

(10*2 pCi/m 3) (0 .8-3.8) 4.4 km NW (0.9-3.6) (0 .9-3.7)

Direct Radiation Ambient Radiation TLD (480) 18.73 (480/480) East Fence Left 44.64 (24/24)

(mR/90 days) (8.91 -59 .54) RPDR11 (22 .72-59.54) km Mean and range based upon detectab le measurements onl y. Fraction (F) of detectab le measurements at speci fied location is indicated in parentheses.

2 Distance and direction from the central point between the two containment bui ldings.

80

January 1 - December 3 1, 201 6 Docket Nos. 50-3 17/50-3 18/72-8 Table E-4 Concentration of Gamma Emitters in Bottom Sediment (Results in units of pCi/kg (dry)+/- 2cr)

Sample Code Sample Date Cs-137 Gamma Em itters WBS2 Discharge Area 6/14/2016

• 10/20/2016

• WBS4l Camp Conoy/ Rocky Point 6/14/2016 148 +/- 66

• 10/20/2016

• This isotope <MDA 2

Control Location

• All No n-Natural Gamma Emitters <MDA 81

January 1 - Dece mber 3 1, 2016 Docket Nos. 50-317/50-318/72-8 Table E-5 Concentration of lodine-131 in Filtered Air (Results in units of 10*3 pCi/m 3 +/- 2cr) 1 1 Start Date Stop Date CA LB SFA1 SFA2 SFA3 SFA4 Tl Cambridge LONG BEACH MET Station Visitors Center NNW of ISFSI SSE of ISFSI TAYLOR'S ISLAND 12/28/2015 1/4/2016 1/4/2016 1111/2016 1/11/2016 1/18/2016 1/18/2016 1/25/2016 1/25/2016 2/1/2016 2/1/2016 2/8/2016 2/8/2016 2/15/2016 2/15/2016 2/22/2016 2/22/2016 2/29/2016 2/29/2016 317/2016 317/2016 3/14/2016 3/14/2016 3/21/2016 3/21/2016 3/28/2016 3/28/2016 4/4/20 16 4/4/2016 4/11/2016 4/11/2016 4/18/2016 4/18/2016 4/25/2016 4/25/20 16 5/2/2016 5/2/2016 5/9/2016 5/9/2016 5/16/2016 5/16/2016 5/23/20 16 5/23/2016 5/30/2016 5/30/2016 6/6/2016 6/6/2016 6/13/2016 6/13/2016 6/20/2016 6/20/2016 6/27/2016 6/27/2016 7/4/2016 82

January l - December31 , 2016 Docket Nos. 50-317/50-318/72-8 Table E-5 Concentration of lodine-131 in Filtered Air (Results in units of 10*3 pCi/m 3 +/- 2cr)

Start Date Stop Date CA LB SFA1 SFA2 ' SFA3 SFA4 Tl '

Cambridge LONG BEACH MET Station Visitors Center NNW of ISFSI SSE of ISFSI TAYLOR'S ISLAND 7/4/2016 7/11/2016 7/11/2016 7/18/2016 7/18/2016 7/25/2016 7/25/2016 8/1/2016 8/1/2016 8/8/2016 8/8/2016 8/15/2016 8/15/2016 8/22/2016 8/22/2016 8/29/2016 8/29/2016 9/5/2016 9/5/2016 9/12/2016 9/12/2016 9/19/2016 9/19/2016 9/26/2016 9/26/2016 10/3/2016 10/3/2016 10/10/2016 10/10/2016 10/17/2016 10/17/2016 10/24/2016 10/24/2016 10/31/2016 10/31/2016 1117/2016 11n/2016 11/14/2016 11/14/2016 11/21/2016 11/21/2016 11/28/2016 11/28/2016 12/5/2016 12/5/2016 12/12/2016 12/12/2016 12/19/2016 12/19/2016 12/26/2016 12/26/2016 1/2/2017 Control Locati on

• <M DA 83

January I - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Table E-6 Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2cr) 1 Start Date Stop Date CA LB Tl Cambridge LONG BEACH TAYLOR'S ISLAND 12/28/2015 1/4/2016 1.6 +/- 0.1 1.5+/-0.1 1.5 +/- 0.1 1/4/2016 1/11/2016 1.4 +/- 0.1 1.8+/-0.1 1.5 +/- 0.1 1/11/2016 1/18/2016 2.2 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 1/18/2016 1/25/2016 1.7 +/- 0.1 1.8 +/- 0.1 1.6 +/- 0.1 1/25/2016 2/1/2016 1.9+/-0.1 1.9+/-0.1 1.8 +/- 0.1 2/1 /2016 2/8/2016 1.3 +/- 0.1 1.3 +/- 0.1 1.4 +/- 0.1 2/8/2016 2/15/2016 1.2 +/- 0.1 1.2 +/- 0.1 1.3 +/- 0.1 2/15/2016 2/22/2016 1.5 +/- 0.1 1.5+/-0.1 1.6 +/- 0.1 2/22/2016 2/29/2016 1.6 +/- 0.1 1.7 +/- 0.1 1.8 +/- 0.2 2/29/2016 317/2016 1.5 +/- 0.1 1.7+/-0.1 1.8 +/- 0.1 317/2016 3/14/2016 1.6 +/- 0.1 1.6 +/- 0.1 1.7 +/- 0.1 3/14/2016 3/21/2016 1.1 +/-0.1 1.4 +/- 0.1 1.2 +/- 0.1 3/21/2016 3/28/2016 1.5 +/- 0.1 1.5 +/- 0.1 1.5 +/- 0.1 3/28/2016 4/4/2016 1.8+/-0 .1 1.9+/-0.1 1.8 +/- 0.1 4/4/2016 4/11/2016 1.6 +/- 0.1 1.8+/-0.1 1.7+/-0.1 4/11/2016 4/18/2016 1.6 +/- 0.1 1.9 +/- 0.1 1.6 +/- 0.1 4/18/2016 4/25/2016 2.2 +/- 0.1 2.3 +/- 0.1 2.1+/-0.1 4/25/2016 5/2/2016 1.3 +/- 0.1 1.2 +/- 0.1 1.3 +/- 0.1 5/2/2016 5/9/2016 0.8 +/- 0.1 0.9 +/- 0.1 0.9 +/- 0.1 5/9/2016 5/16/2016 1.6 +/- 0.1 1.7+/-0.1 1.5 +/- 0.1 5/16/2016 5/23/2016 1.6 +/- 0.1 1.6 +/- 0.1 1.7 +/- 0.1 5/23/2016 5/30/2016 2.0 +/- 0.1 2.0 +/- 0.1 1.8 +/- 0.1 5/30/2016 6/6/2016 1.3 +/- 0.1 1.2 +/- 0.1 1.2 +/- 0.1 6/6/2016 6/13/2016 1.8 +/- 0.1 1.7+/-0.1 1.7 +/- 0.1 6/13/2016 6/20/2016 1.6 +/- 0.1 1.7+/- 0.1 1.5 +/- 0.1 6/20/2016 6/27/2016 1.9 +/- 0.1 2.1+/-0.1 2.1 +/- 0.1 6/27/2016 7/4/2016 1.7 +/- 0.1 1.9 +/- 0.1 1.6 +/- 0.1 7/4/2016 7/11/2016 1.9+/-0.1 2.0 +/- 0.1 1.6 +/- 0.1 7/11/2016 7/18/2016 2.0 +/- 0.1 2.1 +/- 0.1 1.9 +/- 0.1 7/18/2016 7/25/2016 2.6 +/- 0.2 2.8 +/- 0.2 3.0 +/- 0.2 7/25/2016 8/1/2016 2.0 +/- 0.1 2.3 +/- 0.1 2.0 +/- 0.1 84

January 1 - December 31 , 2016 Docket Nos. 50-317 /50-318/72-8 Table E-6 Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2cr) 1 Start Date Stop Date CA LB Tl Cambridge LONG BEACH TAYLOR'S ISLAND 8/1/2 016 8/8/2016 1.5 +/- 0.1 1.4 +/- 0.1 1.4 +/- 0.1 8/8/2 016 8/15/2016 1.8 +/- 0.1 2.2 +/- 0.1 1.9 +/- 0.1 8/15/2016 8/22/2016 2.0 +/- 0.1 1.4 +/- 0.1 2.0 +/- 0.1 8/22/2016 8/29/2016 2.1+/-0.1 2.4 +/- 0.2 2.0 +/- 0.1 8/29/2016 9/5/2016 2.1+/- 0.1 1.9+/-0.1 2.3 +/- 0.1 9/5/2 016 9/12/2016 3.1 +/- 0.2 3.6 +/- 0.2 3.3 +/- 0.2 9/12/2016 9/19/2016 1.6 +/- 0.1 1.6+/-0.1 1.7 +/- 0.1 9/19/2016 9/26/2016 2.0 +/- 0.1 2.0 +/- 0.1 2.2 +/- 0.1 9/26/2016 10/3/2016 1.3 +/- 0.1 1.2 +/- 0.1 1.2 +/- 0.1 10/3/2016 10/10/2016 1.4 +/- 0.1 1.4 +/- 0.1 1.4 +/-0.1 10/10/2016 10/17/2016 2.0 +/- 0.1 2.3 +/- 0.1 2.0 +/- 0.1 10/17/2016 10/24/2016 1.9 +/- 0.1 2.1 +/- 0.1 1.9 +/- 0.1 10/24/2016 10/31/2016 2.0 +/- 0.1 2.0 +/- 0.1 1.9 +/- 0.1 10/31/2016 11 /7/2016 2.3 +/- 0.1 2.1 +/- 0.1 2.2 +/- 0.1 1117/2016 11/14/2016 1.6 +/- 0.2 1.9+/-0.1 1.5 +/- 0.2 11/14/2016 11/21/2016 3.8 +/- 0.2 3.5 +/- 0.2 3.7 +/- 0.2 11/21 /2016 11/28/2016 2.4 +/- 0.1 2.5 +/- 0.1 2.2 +/- 0.1 11/28/2016 12/5/2016 2.1 +/- 0.1 2.2 +/- 0.1 2.0 +/- 0.1 12/5/2016 12/12/2016 1.6+/-0.1 1.9 +/- 0.1 1.6 +/- 0.1 12/12/2016 12/19/2016 2.6 +/- 0.1 2.0 +/- 0.1 2.4 +/- 0.1 12/19/2016 12/26/2016 2.8 +/- 0.1 3.0 +/- 0.1 2.5 +/- 0.1 12/26/2016 1/2/2017 1.7 +/- 0.1 1.6+/-0.1 1.5 +/- 0.1 Control Location

• <rvtDA 85

January 1 - December 31, 201 6 Docket Nos. 50-317/50-318/72-8 Table E-7 Concentration of Gamma Emitters in Air Particulates (Results in units of 10-3 pCi/m 3 +/- 2cr) 1 Sample Date CA LB Tl Cambridge LONG BEACH TAYLOR'S ISLAND 2/1/2016 2/29/2016 *

• 3/28/2016 *

• 5/2/2016 *

• 5/30/2016 *

• 6/27/2016 *

• 8/1/2016 *

• 8/29/2016 * *

• 10/3/2016 * *

• 10/31/2016

• 11/28/2016 * *

• 1/2/2017 *

• Control Location

• A ll Non-Natural Gamma Emitters <MDA 86

January l - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Table E-8 Concentration of Tritium and Gamma Emitters in Taylors Island Well Water (Results in units of pCi/L +/- 2cr)

Sample Date Gamma Emitters H3 1/28/2016 * <161 2/25/2016 * <159 3/15/2016 * <162 4/25/2016 * <159 5/23/2016 <159 6/7/2016 * <156 7/26/2016 * <155 8/23/2016 * <157 9/26/2016 * <157 10/25/2016 * <157 11/14/2016 <152 12/28/2016 * <153

• Non- atural Gamma Emitters <MDA 87

January 1 - December 31 , 2016 Docket Nos. 50-317 / 50-3 18/72-8 Tab le E-9 Direct Radiation (Res u lts in units of mR/90 days+/- 2cr)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter DR24 Rt. 4 and Parran Rd. 11 .64 +/- 1.12 11 .98 +/- 1.18 10.87 +/- 1.37 11 .76 +/- 0.30 DR25 Camp Conoy Guard House 12.86 +/- 0.62 12.40 +/- 1.28 12.20 +/- 0.83 13.56 +/- 0.46 DR26 Rt. 235 and Clark's Landing 10.80 +/- 0.77 11 .16 +/- 0.86 9.83 +/- 0.96 11 .92 +/- 1.31 Road DR27 Rt. 231 and Rt. 4 12.01 +/- 1.26 11 .87 +/- 0.52 10.04 +/- 0.27 11 .38 +/- 0.39 DR28 Taylors Is. Siren #35 13.56 +/- 0.91 14.37 +/- 1.74 12.01 +/- 0.99 14.34 +/- 1.49 DR29 Taylors Is. Siren #38 14.53 +/- 1.35 14.93 +/- 1.15 12.70 +/- 1.20 14.24 +/- 0.79 DR31 Cambridge 14.80 +/- 1.56 15.32 +/- 0.97 13.85 +/- 0.40 16.15 +/- 0.75 DR32 Twin ing Property, Taylors 13.66 +/- 0.31 14.57 +/- 0.93 13.07 +/- 0.89 16.40 +/- 0.40 Island DR33 P. A . Ransome Property 14.91 +/- 1.19 15.21 +/- 1.01 13.94 +/- 1.94 15.77 +/- 1.12 DR34 Shoreline at Barge Rd . 9.88 +/- 0.62 9.70 +/- 1.19 8.91 +/- 1.34 9.89 +/- 0.70 OSG 1 North of Old Steam 17.16 +/- 1.33 17.70 +/- 2.42 15.19 +/- 2.83 18.81 +/- 0.56 Generator Storage Facility OSG2 West of Old Steam 15.01 +/- 1.09 15.53 +/- 1.84 13.08 +/- 1.07 16.33 +/- 1.44 Generator Storage Facility 88

January I - December 3 1, 2016 Docket Nos. 50-317/50-318/72-8 Table E-10 Direct Radiation from Resin Storage Area (Results in units of mR/90 days+/- 2cr)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter RPDR05 North Fence Lower 37 .81 +/- 1.16 59.35 +/- 7.52 25.50 +/- 1.90 32 .58 +/- 2.63 RPDR06 North Fence Upper 31.82 +/- 2.81 43.58 +/- 4.56 20.27 +/- 2.15 22 .43 +/- 2.05 RPDR07 West Fence Right 17.58 +/- 0.83 26.19 +/- 2.07 13.59 +/- 0.84 14.62 +/- 0.64 RPDR08 West Fence Left 19.38 +/- 1.59 19.00 +/- 2.16 14.33 +/- 1.87 14.92 +/- 1.11 RPDR09 South Fence Upper 25.31 +/- 1.65 24.17 +/- 0.95 16.40 +/- 1.54 14.73 +/- 0.42 RPDR10 South Fence Lower 37.29 +/- 2.38 37 .04 +/- 2.28 23.82 +/- 2.00 17.55 +/- 0.73 RPDR11 East Fence Left 59.54 +/- 8.05 56.80 +/- 11 .55 39.51 +/- 2.27 22 .72 +/- 2.06 RPDR12 East Fence Right 18.87 +/- 1.17 18.93 +/- 1.61 14.16 +/- 1.53 16.88 +/- 1.07 89

January I - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Table E-11 Radiological Groundwater Protection Program Concentration of Tritium in Groundwater (Results in units of pCi/L +/- 2a)

By Piezometer Tube Locations Sample Date 11 12 13 15 18 19 20 21 22 23 24 25 26 27 28 29 30 02110/2016 ND ND ND ND ND # # # # ND ND NO ND ND ND NO ND 02110/2016 ND ND NO NO NO ND ND ND # NO NO ND ND ND ND ND ND 02111 /2016 ND # # # # ND ND ND ND NO # # NO ND NO # ND 0211212016 509+/-74.5 NO NO NO NO NO NO NO NO ND ND ND NO NO ND NO ND 0211212016 465+/-72.1 NO NO NO NO NO NO NO ND ND ND ND NO ND ND ND #

05/0212016 NO NO NO NO NO # ND NO NO NO ND ND NO NO ND NO NO 05/03/2016 ND ND ND ND ND NO # # # ND NO NO ND ND NO ND ND 05104/2016 392+/-66.3 # # # ND NO ND ND ND # # # # # # # #

05/04/2016 504+/-69.4 ND ND ND ND ND ND ND ND # NO ND ND ND NO ND ND 0810212016 NO NO NO NO NO # # # # ND # # NO NO ND NO NO 08/0212016 ND NO NO NO NO ND NO NO # ND ND ND NO NO ND ND NO 08103/2016 663+/-61 .1 # # # NO ND NO NO NO NO NO ND NO ND ND # #

0810312016 672+/-61 .0 ND NO NO NO NO NO NO NO NO ND ND NO NO ND NO NO 11/08/2016 ND ND NO NO NO # # # # NO # # ND NO NO ND #

11/0812016 ND NO NO NO NO NO NO NO # ND ND NO NO ND ND NO ND 11/09/2016 1530+/-106 # # # NO ND NO NO NO NO ND ND ND NO ND # NO 11/09/2016 1410+/-102 NO NO NO NO NO NO NO NO NO ND ND ND NO ND NO NO Tritium Less than minimum Detectab le Acti vity(<MDA)

NO No Data - Quanerl y sample obtained as required 90

January l-December3 1, 20 16 Docket Nos. 50-3 17/50-3 18/72-8 Table E-11 (Continued)

Concentration of Tritium in Surface Water, Precipitation, and Subsurface Drai nage (Resu lts in units of pCi/L +/- 2cr)

Sample Date MH24 MH28 MH30 RW1 RW2 RW3 RW4 SW003 SW004 02/12/2016 ND ND ND ND ND ND ND # #

03/23/2016 # ND ND ND ND ND ND ND ND 03/3112016 ND ND ND # # # # ND ND 05/04/2016 # ND ND ND ND ND ND # #

05/05/2016 ND ND ND # # # # ND ND 06/22/2016 ND 1380+/-77 1930+/-86 ND ND ND ND ND ND 06/23/2016 ND 1360+/-77 1210+/-75 ND ND ND ND ND ND 08/03/2016 ND ND ND ND ND ND ND # #

08/05/2016 # ND ND ND ND ND ND ND ND 08/18/2016 ND ND ND # # # # ND ND 09/12/2016 ND 1360+/-209 1600+/-215 ND ND ND ND ND ND 11/08/2016 # ND ND ND ND ND ND # ND 11/0912016 ND ND ND ND ND ND ND ND #

11114/2016 ND 1910+/-91 975+/-75 ND ND ND ND ND ND 11/15/2016 ND 2820+/-102 1320+/-82 ND ND ND ND ND ND 12/01/2016 ND ND ND # # # # ND ND Tritium Less than minimum Detectable Activity(<MDA)

NI) No Data - Quarterl y sample obtained as required 91

January I - December 3 1, 2016 Docket Nos. 50-317 /50-3 18/72-8 Table E-12 Gross Concentration of Gamma Emitters in Groundwater (Results in units of pCi/L +/- 20')

By Piezometer Tube Locations Sample Date 11 12 13 15 18 19 20 21 22 23 24 25 26 27 28 29 30 02/10/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND 02/10/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 02/11 /2016 ND ND ND ND ND ND ND ND ND ND 02/12/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 02/12/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 05/02/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 05/03/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 05/04/2016 ND ND ND ND ND 05/04/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 08/0212016 ND ND ND ND ND ND ND ND ND ND ND 08/02/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 08/03/2016 ND ND ND ND ND ND ND ND ND ND ND 08/03/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 11/08/2016 ND ND ND ND ND ND ND ND ND ND 11 /08/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 11 /09/2016 ND ND ND ND ND ND ND ND ND ND ND ND 11 /09/2016 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND All on*Natural Gamma Emitters <M DA ND No Da1a - Quarterl y sample obtain ed as requi red 92

January 1 - December 3 1, 20 16 Docket Nos. 50-317/50-318/72-8 Table E-12 (CONTINUED)

Gross Concentration of Gamma Emitters in Surface Water, Precipitation , and Subsurface Drainage (Results in units of pCi/L +/- 2cr)

Sample Date MH24 MH28 MH30 RW1 RW2 RW3 RW4 SW003 SW004 02112/2016 ND ND ND ND ND ND ND ND ND 03/23/2016 ND ND ND ND ND ND ND ND 03/31/2016 ND ND ND ND ND ND ND ND ND 05/04/2016 ND ND ND ND ND ND ND ND 05/05/2016 ND ND ND ND ND ND ND ND ND 06/22/2016 ND ND ND ND ND ND ND ND ND 06/23/2016 ND ND ND ND ND ND ND ND ND 08/03/2016 ND ND ND ND ND ND ND ND ND 08/05/2016 ND ND ND ND ND ND ND ND 08/18/2016 ND ND ND ND ND ND ND ND ND 09/12/2016 ND ND ND ND ND ND ND 11/08/2016 ND ND ND ND ND ND ND ND 11109/2016 ND ND ND ND ND ND ND ND ND 11114/2016 ND ND ND ND ND ND ND 11/15/2016 ND ND ND ND ND ND ND 12/01/2016 ND ND ND ND ND ND ND ND ND All Non-Natural Gamma Emitters <MDA ND No Data - Quanerl y sample obtained as required 93

January l - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Figure E-1 Site Map Groundwater Monitoring Wells

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January I - December 31 , 2016 Docket Nos. 50-317/50-318/72-8 Figure E-2 Site Map RW Locations 95