Text

Independent Spent Fuel Storage Installation, Annual Radiological Environmental Operating Report
	ML13142A148
Person / Time
Site:	Calvert Cliffs
Issue date:	05/14/2013
From:	Lauver D; EDF Group, Calvert Cliffs, Constellation Energy Nuclear Group
To:	; Document Control Desk, Office of Nuclear Reactor Regulation, Office of Nuclear Material Safety and Safeguards
References
	Download: ML13142A148 (96)
	v • d • e

Calvert Cliffs Nuclear Power Plant CENGS.

a joint venture of Constellation 4.j--reDF 0 nry 10 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 May 14,2013 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:

SUBJECT:

Document Control Desk Calvert Cliffs Nuclear Power Plant; Unit Nos. 1 & 2; Docket Nos. 50-317 & 50-318 Independent Spent Fuel Storage Installation; Docket No. 72-8 Annual Radiological Environmental Operating Report

REFERENCES:

(a)

Calvert Cliffs Nuclear Power Plant Technical Specification 5.6.2 (b)

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

Should you have questions regarding this matter, please contact me at (410) 495-5219 or Mr. David Merryman at (410) 495-4913.

Very truly yours, Douglas E. Lauver Director-Licensing DEL/PSF/bjd

Attachment:

(1) Annual Radiological Environmental Operating Report for the Calvert Cliffs Nuclear Power Plant Units I and 2 and the Independent Spent Fuel Storage Installation cc:

N. S. Morgan, NRC W. M. Dean, NRC Resident Inspector, NRC S. Gray, DNR R. Manley, MDE

0 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 Calvert Cliffs Nuclear Power Plant, LLC May 14, 2013

ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR THE CALVERT CLIFFS NUCLEAR POWER PLANT UNITS 1 AND 2 AND THE INDEPENDENT SPENT FUEL STORAGE INSTALLATION January 1 - December 31, 2012 A. M. Barnett J. S. D'Souza C. D. Merryman CONSTELLATION ENERGY NUCLEAR GROUP, LLC MAY 2013

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS L IST O F FIG U R E S............................................................................................................................

ii L IST O F T A B L E S.............................................................................................................................

iii I. SU M M A R Y.......................................................................................................................................

1 II. CALVERT CLIFFS NUCLEAR POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM............................................................

3 II.A. INTRO DUCTIO N................................................................................................................................................

3 II.B. PRO G RAM...........................................................................................................................................................

3 II.B.1 b iectives......................................................................................................................................................

3 II.B.2 Sam ple Collection.........................................................................................................................................

4 II.B3.3 Data Interpretation.......................................................................................................................................

4 II.B.4 Program Exce itions......................................................................................................................................

4 II.C. RESULTS AND DISCU SSIO NS..........................................................................................................................

4 II.C.1 Aquatic Environm ent....................................................................................................................................

4

.C.l.a Bay W ater....................................................................................................................................................

5 II.C.l.b Aquatic O rganism s.....................................................................................................................................

5 II.C.l.c Shoreline Sedim ent.....................................................................................................................................

5 II.C.2 Atm ospheric Environm ent...........................................................................................................................

9 II.C.2.a A ir Particulate Filters................................................................................................................................

9 II.C.2.b Air Iodine...................................................................................................................................................

9 II.C.3 Terrestrial Environm ent...........................................................................................................................

11 II.C.3.a Vegaetation.................................................................................................................................................

11 II.C.4 Direct Radiation..........................................................................................................................................

11 II.D. CO NC LUSIO N....................................................................................................................................................

13 III. INDEPENDENT SPENT FUEL STORAGE INSTALLATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM.....................................................

19 III.A. INTRO D UCTIO N..............................................................................................................................................

19 III.B. PRO G RA M.........................................................................................................................................................

19 III.B.1 O beectives...................................................................................................................................................

19 III.B.2 Sam ple Collection......................................................................................................................................

20 III.B3.3 Data Interpretation...................................................................................................................................

20 III.B.4 Progaram Exceptions..................................................................................................................................

20 III.C. RESULTS AN D DISC USSIO NS......................................................................................................................

21 III.C.1 Atm ospheric Environm ent.......................................................................................................................

21 III.C.l.a Air Particulate Filters............................................................................................................................

21 III.C.2 Terrestrial Environm ent...........................................................................................................................

21 III.C.2.a Vegeetation...............................................................................................................................................

21 III.C.2.b Soils.........................................................................................................................................................

22 III.C.3 Direct Radiation........................................................................................................................................

22 II.D C.

CO NC LUSIO N...................................................................................................................................................

23 IV. RE FE RE N C E S............................................................................................................................

27 APPENDIX A Sample Locations for the REMP and the ISFSI.............................................

28 APPENDIX B Analysis Results for the REMP and the ISFSI...............................................

37 APPENDIX C Quality Assurance Program..............................................................................

58 A P PE N D IX D L and U se Survey..................................................................................................

72 APPENDIX E Additional Samples and Analysis Results........................................................

73 i

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 LIST OF FIGURES Figure Title Page 1

Tritium in Chesapeake Bay W ater.......................................................................................

7 2

Silver-1 10m and Potassium-40 in Chesapeake Bay Oysters..............................................

8 3

Nuclear Fallout in the Calvert Cliffs Area.........................................................................

10 4

Mean TLD Gamma Dose, Calvert Cliffs Nuclear Power Plant..........................................

12 5

Atmospheric Dispersion Around CCNPP Average Relative Air Concentrations.............. 15 6

Atmospheric Dispersion Around CCNPP Average Relative Ground Deposition.............. 16 7

M ean TLD Gamma Dose, ISFSI......................................................................................

24 A-i Map of Southern Maryland and Chesapeake Bay Showing Location of Calvert Cliffs N uclear Pow er Plant............................................................................................................

31 A-2 Calvert Cliffs Nuclear Power Plant Sampling Locations, 0-2 Miles..................................

32 A-3 Calvert Cliffs Nuclear Power Plant Sampling Locations, 0-10 Miles................................

33 A-4 Independent Spent Fuel Storage Installation Sampling Locations.....................................

35 A-5 Enlarged Map of the Independent Spent Fuel Storage Installation Sampling Locations........ 36 E-I Site M ap Groundwater M onitoring W ells...........................................................................

89 Hi

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 LIST OF TABLES Table Title Page I

Synopsis of 2012 Calvert Cliffs Nuclear Power Plant Radiological Environmental M onitoring Program.............................................................................................................

17 2

Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant U nits 1 and 2...................................................................................................

18 3

Synopsis of 2012 Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation Radiological Environmental Monitoring Program..........................................

25 4

Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation.............................................................

26 A-I Locations of Environmental Sampling Stations for the Calvert Cliffs Nuclear Power Plant..30 A-2 Locations of Environmental Sampling Stations for the Independent Spent Fuel Storage Installation at Calvert C liffs...............................................................................................

34 B-I Concentration of Tritium and Gamma Emitters in Bay Water..........................................

39 B-2 Concentration of Gamma Emitters in the Flesh of Edible Fish..........................................

40 B-3 Concentration of Gamma Emitters in Oyster Samples......................................................

41 B-4 Concentration of Gamma Emitters in Shoreline Sediment.................................................

42 B-5 Concentration of Iodine-131 in Filtered Air.......................................................................

43 B-6 Concentration of Beta Emitters in Air Particulates...........................................................

45 B-7 Concentration of Gamma Emitters in Air Particulates......................................................

49 B-8a Concentration of Gamma Emitters in Vegetation Samples...............................................

50 B-8b Concentration of Gamma Emitters in Vegetation From Locations Around the ISFSI.....

51 B-9 Concentration of Gamma Emitters in Soil Samples From Locations Around the ISFSI........ 52 B-10 Typical MDA Ranges for Gamma Spectrometry...............................................................

53 B-il Typical LLDs for Gamma Spectrometry...........................................................................

54 B -12 D irect R adiation.......................................................................................................................

55 C-1 Results of Participation in Cross Check Programs.............................................................

61 C-2 Results of Quality Assurance Program..............................................................................

64 C-3 Teledyne Brown Engineering's Typical MDAs for Gamma Spectrometry.......................

71 D -1 L and U se Survey......................................................................................................................

72 E-I Locations of Non-Tech Spec Environmental Sampling Stations for Calvert Cliffs Nuclear Pow er P lant..............................................................................................................................

75 E-2 Synopsis of 2012 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environmental M onitoring Program...................................................................................

76 E-3 Annual Summary for Calvert Cliffs Nuclear Power Plant Units 1 & 2 Non-Tech Spec Radiological Environmental Monitoring Program.............................................................

77 E-4 Concentration of Gamma Emitters in Bottom Sediment....................................................

78 E-5 Concentration of Iodine-131 in Filtered Air.......................................................................

79 E-6 Concentration of Beta Emitters in Air Particulates..............................................................

81 E-7 Concentration of Gamma Emitters in Air Particulates......................................................

83 E-8 Concentration of Tritium and Gamma Emitters in Taylors Island Well Water..................

84 iii

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 E -9 D irect R adiation.......................................................................................................................

85 E-10 Direct Radiation from Resin Storage Area........................................................................

86 E-11 Concentration of Tritium in Groundwater.........................................................................

87 E-12 Gross Concentration of Gamma Emitters in Groundwater.................................................

88 iv

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 I.

SUMMARY

During this operating period for Calvert Cliffs Nuclear Power Plant (CCNPP) Units 1 and 2, a total of 3375 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 652 radiochemical analyses were performed on 584 environmental samples and 534 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, 353 radiochemical analyses were performed on 293 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. 10).

In addition, 650 analyses were performed on 530 additional environmental samples, and 468 additional TLDs were analyzed for ambient radiation exposure rates.

And lastly, 200 radiochemical analyses were performed on 200 quality assurance samples and 126 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 sur-rounding CCNPP and the ISFSI. Air particulates and gaseous iodine were collected on glass fiber filters and charcoal cartridges, respectively. The particulate filters were analyzed for beta activity and gamma emitting nuclides. The charcoal cartridges were analyzed for airborne gaseous radioiodine.

I

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Samples from the terrestrial environment consisted of vegetation and soil samples collected and analyzed for gamma emitters. Vegetation samples for the original REMP were also analyzed for 1-131.

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 3375 radiological analyses performed. Low levels of man-made fission products were also observed in 15 of these analyses. All of these observations were attributed to fallout from past atmospheric weapons testing. Detailed discussions about the results of these analyses 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 the plant's effluent release data, on-site meteorological data, and appropriate pathways. The results of these dose calculations indicate:

a. a maximum thyroid dose of 3.10 x 10-2 mrem via liquid and gaseous pathways, which is about 0.041% of the acceptable limit of 75 mrem/yr as specified in 40CFR190 "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 9.17 x 10-4 mrem via liquid and gaseous pathways, which is about 0.004% of the acceptable limit of 25 mrem/yr as specified in both 40CFR190 and IOCFR72.104; and

c. a maximum calculated dose to all other organs via liquid and gaseous pathways was equal to 9.51 x 10-4 mrem to the skin. This dose is about 0.004% of the allowable limit of 25 mrem/yr as specified in both 40CFR190 and 10CFR72.104.

Thus, it is concluded based upon the levels of radioactivity observed and the various dose calculations performed, that CCNPP Units 1 and 2 and the ISFSI did not cause any significant radiological impact on the surrounding environment.

2

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 II. CALVERT CLIFFS NUCLEAR POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM II.A. INTRODUCTION Constellation Energy Nuclear Generation (CENG), previously known as Baltimore Gas and Electric Company (BGE), has been conducting a REMP in the environs of the CCNPP since the summer of 1970. 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 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 1), 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.

ll.B. PROGRAM II.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 40CFR190,

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 con-centration of radionuclides in important pathways.

3

t-January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 lI.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 Constellation Energy according to CCNPP Procedures (Ref. 7, 8 and 12).

II.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.

II.B.4 Program Exceptions The semiannual sample of shoreline sediment (sample code WB 1) was not taken during the second half of 2012 as required by the ODCM (Ref. 6). No substitute sample was collected in lieu of the sample not taken from this location. This program exception has been entered into the site's Corrective Action Program to ensure it does not recur.

Three direct radiation dosimeters, one in the 3 rd quarter and two in the 4th quarter, were found missing from ODCM (Ref. 6) sampling locations during this operating period. A direct radiation dosimeter was not taken from the Cove Point and Little Cove Point Roads sampling location (sample code DR17) in the 3 rd quarter of this operating period, and direct radiation dosimeters were not taken in the 4th quarter of this operating period at Dirt Road off Mackall Road and Parran Road (sample code DR1 1) and Solomons Island (sample code DR22). No substitute samples were collected in lieu of the samples not taken from these locations. 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.

II.C. RESULTS AND DISCUSSIONS All the environmental samples collected during the year were analyzed using Constellation Energy laboratory procedures (Ref. 8). 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).

II.C.1 Aquatic Environment The aquatic environment surrounding the plant was monitored by analyzing 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, 2012 Docket Nos. 50-317/50-318/72-8 II.C.l.a Bay Water Monthly bay water samples were taken from two locations during the year. These locations are the Intake Area (sample code WA1) 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 radionuclides.

lI.C.l.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 IAI 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-110 observed in oysters from Camp Conoy (IA3) with annual effluent releases of Ag-i 10 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. Low level Cs-137 was observed in the oyster sample from Kenwood Beach (sample code IA6) during the third quarter. The Cs-137 observation was attributed to fallout from past atmospheric weapons testing. Oyster samples likewise exhibited naturally occurring K-40 but no detectable concentrations of any plant-related radionuclides.

II.C.l.c Shoreline Sediment Semiannual shoreline sediment samples are taken from one location during the year. This location is Shoreline at Barge Road (sample code WB1). The first semiannual shoreline sediment sample obtained from this location was analyzed for gamma emitters. For more information regarding the second semiannual shoreline sediment sample, refer to II.B.4 Program Exception.

-5

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Gamma spectrometric analyses of these samples exhibited naturally occurring radionuclides but no detectable concentration of any plant-related radionuclides.

6

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE 1 Tritium in Chesapeake Bay Water C:

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January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE 2 Silver-11Orn and Potassium-40 in Chesapeake Bay Oysters 8

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 II.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 A1), 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).

II.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 showed values characteristic of background levels. The values ranged from 0.6 x 10-2 to 4.6 x 10-2 pCi/m 3 for the indicator locations and 0.7 x 10-2 to 5.1 x 10-2 pCi/m 3 at the control location.

The location with the highest overall mean of 2.4 x10-2 pCi/m 3 was A4, Route 765 at Lusby.

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

Figure 3 depicts the historical trends of beta activity.

II.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 radioiodine analyses of charcoal cartridges collected from all five locations exhibited no detectable concentrations of 1-131.

Figure 3 depicts the historical trends of radioiodine.

9

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE 3 Nuclear Fallout in the Calvert Cliffs Area SURFACE AIR VAPORS, LUSBY, MD (A4) 250

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j January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 II.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.

II.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 IB 1, 1B2, and 1B3), On Site before the Entrance to Camp Conoy (sample codes 1B4, IB5, and 1B6), and the Emergency Operations Facility (sample codes 1B7, 1B8, and 1B9). These samples were analyzed for gamma emitters, including analyses for 1-13 1.

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

II.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 quarterly from twenty-three locations surrounding the plant. The twenty indicator locations are On Site Along the Cliffs (sample code DRI), Route 765 Auto Dump (sample code DR2), Giovanni's Tavern (sample code DR3), Route 765 across from White Sands (sample code DR4), John's Creek (sample code DR5), 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 DR10), Dirt Road off Mackall and Parran Roads (sample code DRI 1), Mackall and Bowen Roads (sample code DR12), Waliville (sample code DR13), Rodney Point (sample code DR14),

Mill Bridge and Turner Roads (sample code DR15), Appeal School (sample code DR16), Cove Point and Little Cove Point Roads (sample code DR17), Cove Point (sample code DR 18), Long Beach (sample code DRl9), 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 12.06 mR and ranged from 9.16 to 16.70 mR as reported in Table 2. The control locations showed a 90 day mean of 13.49 mR with ranges from 11.18 to 17.83 mR. The location with the highest overall mean of 16.13 was DR23, Taylors Island, which ranged from 14.08 to 17.83 mR. 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.

Figure 4 shows the historical comparison of the average monthly radiation levels per calendar year for TLDs on site, at four miles, and at the control locations.

11

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE 4 Mean TLD Gamma Dose, Calvert Cliffs Nuclear Power Plant 4 Miles (DR10-18)

Control Locations (DR21-23) 5 On-Site (DR1, 7, 8, 20) 4 0

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January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 II.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-II 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 effluent release data, on site meteorological data (see X/Q and D/Q values presented in Figures 5 and 6), and appropriate pathways. The results of these dose calculations indicate:

Gaseous Pathways A maximum thyroid dose of 3.04 x 10-2 mrem to a child via the plume, ground, vegetable, and inhalation pathways at 1.8 km SW of the containments at Calvert Cliffs. This is about 0.04% of the acceptable limit of 75 mrem/yr as specified in 40CFR1 90 and 1 OCFR72.104.

A maximum whole body gamma dose of 2.96 x 104 mrem to a child at 1.8 km SW of the containments at Calvert Cliffs. This is about 0.001% of the acceptable dose limit of 25 mrem/yr as specified in 40CFR190 and 10CFR72.104.

A maximum dose to any other organ, in this case the skin, of 9.32 x 104 mrem to a child at 1.8 km SW of the containments at Calvert Cliffs. This is about 0.004% of the acceptable dose limit of 25 mrem/yr as specified in 40CFRI90 and IOCFR72.104.

Liquid Pathways A maximum thyroid dose of 5.95 x 10-4 mrem to an adult for all liquid pathways, which is about 0.0008 % of the acceptable dose limit of 75 mrem/yr as specified in 40CFR190 and I OCFR72.104.

A maximum whole body dose of 6.21 x 10' mrem to an adult via all liquid pathways, which is about 0.002 % of the acceptable dose limit of 25 mrem/yr as stated in 40CFR190 and 1 OCFR72.104.

A maximum dose to any other organ, in this case GI Tract, of 6.81 x 104 mrem to an adult for all pathways, which is 0.003% of the acceptable dose limit of 25 mrem/yr specified in 40CFR190 and 10CFR72.104.

13

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Gaseous and Liquid Pathways Combined A maximum thyroid dose of 3.10 x 10-2 mrem via liquid and gaseous pathways, which is about 0.041% of the acceptable limit of 75 mrem/yr as specified in 40CFR190 and 10CFR72.104.

A maximum whole body dose of 9.17 x 104 mrem via liquid and gaseous pathways, which is about 0.004% of the acceptable limit of 25 mrem/yr as specified in 40CFR190 and 1 OCFR72.104.

A maximum calculated dose to all other organs via liquid and gaseous pathways is equal to 9.51 x 10-4 mrem to the skin. This dose was about 0.004% of the allowable limit of 25 mrem/yr as specified in 40CFR190 and 10CFR72.104.

In all cases, the calculated doses are a small fraction of the applicable limits specified in 40CFR190 and 10CFR72.104.

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 10CFR72.104. There was no significant buildup of plant-related radionuclides in the environment due to the operation of the CCNPP in 2012.

14

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE 5 Atmospheric Dispersion Around CCNPP Average Relative Air Concentrations (X/Q) 15

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE 6 Atmospheric Dispersion Around CCNPP Average Relative Ground Deposition (D/Q)

DOQ ~1ImA2) Contours 16

January I - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table I Synopsis of 2012 Calvert Cliffs Nuclear Power Plant Radiological Environmental Monitoring Program Sample Type Sampling Number of Number Analysis Analysis Number FrequencyI Locations Collected Frequency1 Analyzed Aquatic Environment Bay Water, Surface MC 2

24 Gamma MC 24 Water, Drinking Water Tritium Q

8 Fish 2 A

4 4

Gamma A

4 Oysters Q

2 8

Gamma Q

8 Shoreline Sediment SA 1

1 Gamma SA 1

Atmospheric Environment Air Iodine 3 W

5 260 1-131 W

260 Air Particulates 4 W

5 260 Gross Beta W

260 Gamma MC 60 Direct Radiation Ambient Radiation Q

23 534 TLD Q

534 Terrestrial Environment Vegetation 5 M

3 27 Gamma M

27 W=weekly" M~monthly, Q=quarterly, SA~semiannual, A=annual, C~composite 2 Once in Season, July through September 3 The collection device contains charcoal.

4 Beta counting is performed after >72 hour decay. Gamma spectroscopy performed on monthly composites of weekly samples.

5 Monthly during growing season when available 17

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table 2 Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant Units 1 and 2 Medium or Pathway Sampled (Unit of Measurement)

Type and Total Number of Analyses Performed Lower Limit of Detection (LLD)

Indicator Locations Mean (F)/Rangel Location with Highest Annual Mean Name/Distance &

Direction 2

Highest Annual Control Locations Mean (F) / Range' Mean (F)/Range Atmospheric Environment Air Particulates Gross Beta (260) 0.5 2.2 (208/208)

Route 765 at 2.4 (52/52) 2.3 (52/52)

(10-2 pCi/m 3)

(0.64.6)

Lusby A4 (0.7-4.6)

(0.7-5.1) 2.9 km SSW Direct Radiation Ambient Radiation TLD (534) 12.06 (468/468)

Taylors Island 16.13 (24/24) 13.49 (66/66)

(mR/90 days)

(9.16-16.70)

DR23 (14.08-17.83)

(11.18-17.83) 12.6 km ENE Mean and range based upon detectable measurements only. Fraction (F) of detectable measurements at specified location is indicated in parentheses.

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

18

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 III. INDEPENDENT SPENT FUEL STORAGE INSTALLATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM M.A. INTRODUCTION In 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 with more canisters being loaded in subsequent years. During this operating period, three additional canisters of spent fuel were transferred to the ISFSI. This area was also used as a temporary storage area for additional radioactive material.

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

This report presents the content of the ISFSI REMP (Table 3), the ISFSI sampling locations (Appendix A), the summary of the 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 ISFSI monitoring program is as described in this section of the report.

The results were compared with that generated during the previous ISFSI pre-operational periods (Ref. 11) and the current and previous CCNPP REMP periods. These results are discussed in more detail in Section III. C.

III.B. PROGRAM III.B.1 Objectives The objectives of the radiological environmental monitoring program for the ISFSI are:

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

b. To verify that radioactivity and ambient radiation levels attributable to operation of the ISFSI are within the limits specified in the Environmental Radiation Protection Standards as stated in 40CFRPart190 and IOCFR72.104,

c. To detect any measurable buildup of long-lived radionuclides in the environment due to the ISFSI,

d. To monitor and evaluate ambient radiation levels around the ISFSI, and

e. To determine whether any statistically significant increase occurs in the concentration of radionuclides near the ISFSI.

19

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 III.B.2 Sample Collection 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, Constellation Energy personnel according to Constellation Energy Laboratory Procedures (Ref. 7, 8, 12).

III.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.

III.B.4 Program Exceptions There were program exceptions during this operating period concerning the availability of air samples for concentrations of beta emitters in air particulates and concentrations of gamma emitters in air particulates analyses per the ODCM (Ref. 6). The concentrations of beta emitters in air particulates was not available from Meteorological Station (sample code SFA 1) during the week beginning April 16 because of improper filter placement in capsule. This weekly sample from Meteorological Station (sample code SFA 1) also was not available for the April composite sample for concentrations of gamma emitters in air particulates analysis. These program exceptions has been entered into the site's Corrective Action Program to ensure they do not recur.

Air sampler power outages at CCNPP Visitor's Center (sample code SFA2) during the weeks beginning July 16, September 10 and September 17 resulted in the loss of air samples available for concentrations of beta emitters in air particulates analyses. An air sample from the week beginning July 16 was included in the July composite sample for concentrations of gamma emitters in air particulates analysis per the ODCM (Ref. 6), but the weeks beginning September 10 and September 17 were not included in the September composite sample for concentrations of gamma emitters in air particulates analysis. A sampler malfunction during the week beginning August 6 at CCNPP Visitor's Center (sample code SFA2) resulted in rejected data for concentrations of beta emitters in air particulates analysis, but this did not preclude the sample from inclusion in the August composite sample for concentrations of gamma emitters in air particulates analysis. These program exceptions have been entered into the site's Corrective Action Program to ensure they do not recur.

Air sampler power outages at SSE of ISFSI (sample code SFA4) during the weeks beginning July 23 and August 6 resulted in the loss of air samples available for weekly concentrations of beta emitters in air particulates analyses. The air sample from the week beginning August 6 at SSE of ISFSI (sample code SFA4) was available for the August composite sample for concentrations of gamma emitters in air particulates analysis, but the week beginning July 23 was not available for the July composite sample for concentrations of gamma emitters in air particulates analysis at the same location. These program exceptions have been entered into the site's Corrective Action Program to ensure they do not recur.

20

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 III.C. RESULTS AND DISCUSSIONS All the environmental samples collected were analyzed using Constellation Energy laboratory procedures (Ref. 8). The analytical results for this reporting period are presented in Appendix B and 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 Environment, and Direct Radiation. These categories are further divided into subcategories according to sample type (e.g., Vegetation and Soil for Terrestrial Environment).

III.C.1 Atmospheric Environment The atmospheric environment was monitored by analyzing air particulate filters. These samples were collected from five locations surrounding the ISFSI.

No source of airborne radioiodine exists for the ISFSI. Airborne radioiodine is, therefore, not considered in assessing the radiological impact of the ISFSI.

III.C.l.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 Al; in common with the CCNPP REMP), Meteorological Station (SFA 1), CCNPP Visitor's Center (SFA2), NNW of the ISFSI (SFA3), and SSE of the ISFSI (SFA4). These samples were an-alyzed 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 0.6 x 10-2 to 4.5 x 10-2 pCi/m 3 for the indicator locations and 0.6 x 10-2 to 4.2 x 10-2 pCi/m 3 for the control location. The location with the highest overall mean of 2.3 x 10-2 pCi/m 3 was SFA4, SSE of ISFSI.

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

III.C.2 Terrestrial Environment The terrestrial environment was monitored by analyzing samples of vegetation and soil collected quarterly from the vicinity of the air sampling locations for the ISFSI.

III.C.2.a Vegetation Vegetation samples were collected quarterly from five locations during the year. These locations are: Meteorological Station (sample code SFB 1), CCNPP Visitor's Center (sample code SFB2),

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

21

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Vegetation samples were analyzed for gamma emitting radionuclides. Cesium-137 was detected in one sample at an indicator location. The Cs-137 concentration was 83 +/- 28 pCi/kg. While the presence of Cs-137 in this sample may be plant-related, this range is consistent with that found to be due to the residual fallout from past atmospheric nuclear weapons testing. The activities of this radionuclide are well below the federal limits established in 40CFR1 90 and 1 OCFR72.104.

These are comparable to those observed in previous annual reporting periods for the CCNPP REMP and in the earlier pre-operational data for the ISFSI. No detectable concentrations of plant-related radionuclides were found in any of these samples. Naturally occurring radionuclides such as K-40 were detected in all samples.

III.C.2.b Soils Soil samples were collected quarterly from five locations surrounding the ISFSI in the vicinity of the air samplers. These locations are: Meteorological Station (sample code SFS1), CCNPP Visitor's Center (sample code SFS2), NNW of the ISFSI (sample code SFS3), SSE of the ISFSI (sample code SFS4), and On Site before the Entrance to Camp Conoy (sample code SFS5).

Soil samples were analyzed for gamma emitting radionuclides. Cesium-137 was detected in nine quarterly samples from both indicator and control locations. The Cs-137 concentrations ranged from 35 + 27 to 324 +/- 34 pCi/kg. While the presence of Cs-137 in these samples may be plant-related, this range is consistent with that found to be due to the residual fallout from past atmospheric nuclear weapons testing. The activities of this radionuclide are well below the federal limits established in 40CFR190 and 10CFR72.104. These are comparable to those observed in previous annual reporting periods for the CCNPP REMP and in the earlier pre-operational data for the ISFSI. No detectable concentrations of plant-related radionuclides were found in any of these samples. Naturally occurring radionuclides such as K-40 were also detected in all these samples.

III.C.3 Direct Radiation Direct radiation is measured by a network of TLDs surrounding the ISFS1. These TLDs are collected quarterly from nineteen locations surrounding the ISFSI, plus one control TLD location at the Visitor's Center (sample code SFDR7). The locations include On Site before the Entrance to Camp Conoy (sample code DR7, common to both the CCNPP Program and the ISFSI Program) and the Meteorological Station (sample code DR30, previously a location maintained for historical continuity.) The other sampling locations are: SW of ISFSI, (sample code SFDR1); NNW of ISFSI, (sample code SFDR2); North of ISFSI, (sample code SFDR3); NE of ISFSI, (sample code SFDR4); East of ISFSI, (sample code SFDR5); ESE of ISFSI, (sample code SFDR6); NNW of ISFSI, (sample code SFDR8); SSE of ISFSI, (sample code SFDR9); NW of ISFSI, (sample code SFDRIO); WNW of ISFSI, (sample code SFDRI 1); WSW of ISFSI, (sample code SFDR12); South of ISFSI, (sample code SFDR13); SE of ISFSI, (sample code SFDR14); ENE of ISFSI, (sample code SFDR15); SSW of ISFSI, (sample code SFDR16); NNE of ISFSI, (sample code SFDR17) and West of ISFSI, (sample code SFDR18). Sampling locations are shown on Figures A-4 and A-5.

The mean 90 day ambient radiation measured at the ISFSI indicator locations was 28.81 mR and ranged from 10.29 to 54.34 mR as reported in Table 4. The control location showed a 90 day 22

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 mean of 12.76 mR and ranged from 12.03 to 14.35 mR. The location with the highest overall mean of 51.70 mR with a range of 47.23 to 54.34 mR was SFDRI 8, West 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.

III.D. CONCLUSION Low levels of Cs-137 were observed in the environment surrounding the ISFSI during the period. The Cs-137 observations were attributed to fallout from past atmospheric weapons testing. No plant-related radionuclides were observed in the environs of the ISFSI.

In general, the results in the following tables continue the historical trends previously observed at the official sites of the CCNPP REMP.

23

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE 7 Mean TLD Gamma Dose, ISFSI 12 -Control Location (SFDR7) 10 ISFSI Mean (DR7, SFDR1-6, 8-18) 8 E

41 2

Calendar Year 24

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table 3 Synopsis of 2012 Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation Radiological Environmental Monitoring Program Number of Number Analysis Locations Collected Sample Type Sampling Frequency' Analysis Frequency' Number Analyzed Atmospheric Environment Air Particulates 2 W

5 253 Gross Beta W

253 Gamma MC 60 Direct Radiation Ambient Radiation Q

20 480 TLD Q

480 Terrestrial Environment Vegetation Q

5 20 Gamma Q

20 Soil Q

5 20 Gamma Q

20 W=weekly, M=monthly, Q=quarterly, SA=semiannual, A=annual, C=composite 2 Beta counting is performed after >72 hour decay. Gamma spectroscopy performed on monthly composites of weekly samples.

25

January I - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table 4 Medium or Pathway Sampled (Unit of Measurement)

Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation Type and Total Lower Limit of Indicator Location with Highest Annual Control Locations Number of Detection (LLD)

Locations Mean Highest Annual Mean (F) / Range' Mean (F)/Range Analyses (F)/Rangel Mean Performed Name/Distance &

Direction 2

Atmospheric Environment Air Particulates (10.2 pCi/m 3)

Direct Radiation Ambient Radiation (mR/90 days)

Gross Beta (253) 0.5 2.3 (205/205)

SSE of ISFSI (0.6-4.5)

SFA4 0.1 km SSE 2.3 (50/50)

(0.7-4.5) 2.2 (48/48)

(0.6-4.2)

TLD (480) 28.81 (456/456)

(10.29-54.34)

West of ISFSI SFDR18 0.1 km W 51.70 (24/24) 12.76 (24/24)

(47.23-54.34)

(12.03-14.35)

Terrestrial Environment Vegetation Gamma (20) 27 83 (1/16)

On Site Before 83 (1/4)

(pCi/kg)

Cs-137 Entrance to Camp Conoy SFB5 0.7 km ESE Soil Gamma (20) 17 188 (6/16)

Entrance to Camp 255 (4/4) 72 (3/4)

(pCi/kg)

Cs-137 (35-324)

Conoy SFS5 (203-324)

(55-81) 0.7 km ESE Mean and range based upon detectable measurements only. Fraction (F) of detectable measurements at specified location is indicated in parentheses.

2 From the central point of the ISFSI facility 26

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 IV. REFERENCES (1)

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 I and 2", NUS No. 1137 Annual 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 1974.

(4)

Malmberg, M. S., "Preoperational Environmental Radioactivity Monitoring Program at Calvert Cliffs Units 1 and 2", NUS No. 1333, Data Summary Report, September 1970 to September 1974, July 1975.

(5)

Calvert Cliffs Nuclear Power Plant, Units 1 and 2, License Nos. DPR-53 and DPR-69, Technical Specification 5.6.2; Annual Radiological Environmental Operating Report.

(6)

Offsite Dose Calculation Manual for the Calvert Cliffs Nuclear Power Plant.

(7)

CP-234, Specification and Surveillance for the Radiological Environmental Monitoring Program.

(8)

Constellation Energy Laboratory Procedures Manual, General Services Department.

(9)

Constellation Energy, "Land Use Survey Around Calvert Cliffs Nuclear Power Plant, August 2012."

(10)

Calvert Cliffs Independent Spent Fuel Storage Installation Technical Specifications, Appendix A to Materials License SNM-2505.

(11)

Baltimore Gas and Electric Company, Radiological Environmental Monitoring Program Pre-Operational Report for the Calvert Cliffs Independent Spent Fuel Storage Installation, August 1990 -

November 1993, February 1994.

(12)

CP-501, Liquid and Steam Sampling Techniques.

(13)

CNG-EV-1.01-1000, Radiological Environmental Monitoring Program (REMP).

27

January I - December 31, 2012 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-I 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.

28

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS - SAMPLING LOCATIONS Table Title Page A-I Locations of Environmental Sampling Stations for the Calvert Cliffs Nuclear Power Plant..30 A-2 Locations of Environmental Sampling Stations for the Independent Spent Fuel Storage Installation at Calvert C liffs...............................................................................................

34 Figure Title Page A-1 Map of Southern Maryland and Chesapeake Bay Showing Location of Calvert Cliffs N uclear Pow er Plant..........................................................................................................

31 A-2 Calvert Cliffs Nuclear Power Plant Sampling Locations, 0-2 Miles..................................

32 A-3 Calvert Cliffs Nuclear Power Plant Sampling Locations, 0-10 Miles................................

33 A-4 Independent Spent Fuel Storage Installation Sampling Locations.....................................

35 A-5 Enlarged Map of the Independent Spent Fuel Storage Installation Sampling Locations........ 36 29

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 TABLE A-i Locations of Environmental Sampling Stations for the Calvert Cliffs Nuclear Power Plant Station AVz A2 A3 A4 A5 DR01 DR02 DR03 DR04 DR05 DR06 DR072 DR08 DR09 DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17 DR18 DR1 9 DR20 DR21 DR22 DR23 IA1 IA10 IA2 IA3 IA4 IA5 IA6 IB1 1B2 1B3 IB4 1B5 1B6 1B7 1B8 1B9 WA1 WA2 WB1 Description On Site Before Entrance to Camp Conoy Camp Conoy Rd, at emergency siren Bay Breeze Rd Route 765, Lusby Emergency Operations Facility On Site, along Cliffs Route 765, Auto Dump Route 765, Giovanni's Tavern (Knotty Pine)

Route 765, across from Vera's Beach Club Route 765, John's Creek Route 765, Lusby On Site Before Entrance to Camp Conoy Camp Conoy Rd at Emergency Siren Bay Breeze Rd Calvert Beach Rd and Decatur Street Dirt road off Mackall & Parren Rd Mackall & Bowen Rds Mackall Rd, near Wallville Rodney Point Mill Bridge & Turner Rds Across from Appeal School Cove Point & Little Cove Point Rds Cove Point Long Beach On site, near shore Emergency Operations Facility (EOF)

Solomons Island Taylors Island, Anderson's Property Discharge Area Hog Island Discharge Vicinity Camp Conoy Patuxent River Patuxent River Kenwood Beach Garden Off Bay Breeze Rd Garden Off Bay Breeze Rd Garden Off Bay Breeze Rd On site, before entrance to Camp Conoy On site, before entrance to Camp Conoy On site, before entrance to Camp Conoy Emergency offsite facility Emergency offsite facility Emergency offsite facility Intake area Discharge area Shoreline at Barae Rd.

Distance1 (KM)

(Miles) 0.7 0.4 2.5 1.6 2.6 1.6 2.9 1.8 19.3 12.0 0.6 0.4 2.7 1.7 2.3 1.4 2.0 1.2 2.4 1.5 2.9 1.8 0.7 0.4 2.5 1.6 2.6 1.6 6.4 4.0 6.6 4.1 6.7 4.2 6.1 3.8 6.4 4.0 6.2 3.9 6.5 4.0 5.9 3.7 7.1 4.4 4.4 2.7 0.4 0.2 19.3 12.0 12.5 7.8 12.6 7.8 0.3 0.2 15.3 9.5 0.3 0.2 0.9 0.6 0.0 0.0 0.0 0.0 10.7 6.7 2.6 1.6 2.6 1.6 2.6 1.6 0.7 0.4 0.7 0.4 0.7 0.4 19.3 12.0 19.3 12.0 19.3 12.0 0.2 0.1 0.3 0.2 0.6 0.4 Direction1 (Sector)

S SSE SE SSW WNW NW WNW W

WSW SW SSW S

SSE SE NW WNW W

WSW SW SSW S

SSE SE NW NNW WNW S

ENE N

SSE N

E Various Various NNW SSE SSE SSE S

S S

WNW WNW WNW NNE N

ESE Distance and direction from the central point between the two containment buildings.

2 Common to both the REMP and ISFSI monitoring program.

30

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE A-1 Map of Southern Maryland and Chesapeake Bay Showing Location of Calvert Cliffs Nuclear Power Plant 31

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE A-2 Calvert Cliffs Nuclear Power Plant Sampling Locations 0-2 Miles 32

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE A-3 Calvert Cliffs Nuclear Power Plant Sampling Locations 0-10 Miles 33

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 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 ISFSI 0.1 SSE Direct Radiation DR072 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 CCNPP Visitor's Center 0.7 NNE SFDR08 NNW of ISFSI 0.1 NNW SFDR09 SSE of ISFSI 0.1 SSE SFDR1 0 NW of ISFSI 0.1 NW SFDR1 1 WNW ISFSI 0.1 WNW SFDR12 WSW of ISFSI 0.1 WSW SFDR13 South of ISFSI 0.1 S

SFDR14 SE of ISFSI 0.1 SE SFDR15 ENE of ISFSI 0.1 ENE SFDR16 SSW of ISFSI 0.1 SW SFDR17 NNE of ISFSI 0.1 NNE SFDR18 West of ISFSI 0.1 W

Vegetation SFB1 ISFSI Vegetation Met Station 0.4 NW SFB2 ISFSI Vegetation Visitor's Center 0.7 NNE SFB3 ISFSI Vegetation NNWA 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 Visitor's 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 from the central point of the ISFSI.

2 Common to both the REMP and ISFSI monitoring program.

34

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE A-4 Independent Spent Fuel Storage Installation Sampling Locations 35

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE A-5 Enlarged Map of the Independent Spent Fuel Storage Installation Sampling Locations 36

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 APPENDIX B Analysis Results for the REMP and the ISFSI Appendix B is a presentation of the analytical results for the CCNPP and the ISFSI radiological environmental monitoring programs.

37

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS - ANALYTICAL RESULTS Table Title Page B-i Concentration of Tritium and Gamma Emitters in Bay Water..........................................

39 B-2 Concentration of Gamma Emitters in the Flesh of Edible Fish..........................................

40 B-3 Concentration of Gamma Emitters in Oyster Samples......................................................

41 B-4 Concentration of Gamma Emitters in Shoreline Sediment.................................................

42 B-5 Concentration of Iodine-131 in Filtered Air......................................................................

43 B-6 Concentration of Beta Emitters in Air Particulates.............................................................

45 B-7 Concentration of Gamma Emitters in Air Particulates.....................................................

49 B-8a Concentration of Gamma Emitters in Vegetation Samples.................................................

50 B-8b Concentration of Gamma Emitters in Vegetation From Locations Around the ISFSI.....

51 B-9 Concentration of Gamma Emitters in Soil Samples From Locations Around the ISFSI........ 52 B-10 Typical MDA Ranges for Gamma Spectrometry...............................................................

53 B-i1 Typical LLDs for Gamma Spectrometry..........................................................................

54 B -12 D irect R adiation.......................................................................................................................

55 38

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B-1 Concentration of Tritium and Gamma Emitters in Bay Water (Results in units of pCi/L +/- 2ar)

Sample Code Sample Date Gamma Emitters H-31 WA1 Intake Vicinity WA2 Discharge Vicinity 1/31/2012 3/1/2012 4/2/2012 4/30/2012 5/31/2012 6/28/2012 8/2/2012 8/29/2012 9/29/2012 11/1/2012 11/30/2012 12/28/2012 1/31/2012 3/1/2012 4/2/2012 4/30/2012 5/31/2012 6/28/2012 8/2/2012 8/29/2012 9/29/2012 11/1/2012 11/30/2012 12/28/2012

<276

<295

<325

<317

<285

<309

<325

<317 Quarterly composite of monthly samples.

All Non-Natural Gamma Emitters <MDA 39

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B-2 Concentration of Gamma Emitters in the Flesh of Edible Fish (Results in units of pCi/kg (wet) +/- 2ar)

Sample Code Sample Date Sample Type Gamma Emitters IA1 Discharge Area 8/23/2012 Spot IA2 Discharge Area 8/23/2012 Striped bass IA41 Patuxent River 8/23/2012 Spot IA51 Patuxent River 8/23/2012 Striped bass Control Location

All Non-Natural Gamma Emitters <MDA 40

January 1 - December 31, 2012 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) +/- 2ay)

Sample Code Sample Date Cs-1 37 Gamma Emitters IA3 Camp Conoy 3/14/2012 6/19/2012 8/23/2012 10/25/2012 IA61 Kenwood Beach 3/14/2012 6/19/2012 8/23/2012 15+/-6 10/25/2012

'Control Location This isotope <MDA

All Non-Natural Gamma Emitters <MDA 41

January 1 - December 31, 2012 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) +/- 2a)

Sample Code Sample Date Gamma Emitters WB1 Shoreline at Barge Rd.

3/28/2012

All Non-Natural Gamma Emitters <MDA 42

January 1 - December 31, 2012 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/M3 +/- 2a)

Start Date Stop Date Al A2 A3 A4 A5' Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 1/2/2012 1/9/2012 1/9/2012 1/16/2012 1/16/2012 1/23/2012 1/23/2012 1/30/2012 1/30/2012 2/6/2012 2/6/2012 2/13/2012 2/13/2012 2/20/2012 2/20/2012 2/27/2012 2/27/2012 3/5/2012 3/5/2012 3/12/2012 3/12/2012 3/19/2012 3/19/2012 3/26/2012 3/26/2012 4/2/2012 4/2/2012 4/9/2012 4/9/2012 4/16/2012 4/16/2012 4/23/2012 4/23/2012 4/30/2012 4/30/2012 5/7/2012 5/7/2012 5/14/2012 5/14/2012 5/21/2012 5/21/2012 5/28/2012 5/28/2012 6/4/2012 6/4/2012 6/11/2012 6/11/2012 6/18/2012 6/18/2012 6/25/2012 6/25/2012 7/2/2012 7/2/2012 7/9/2012 7/9/2012 7/16/2012 7/16/2012 7/23/2012 7/23/2012 7/30/2012 7/30/2012 8/6/2012 8/6/2012 8/13/2012 8/13/2012 8/20/2012 8/20/2012 8/27/2012 8/27/2012 9/3/2012 43

January 1 - December 31, 2012 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/M3 +/- 2cr)

Start Date Stop Date Al Entrance to Camp Conoy A2 Camp Conoy Siren A3 Bay Breeze Rd A4 Route 765 at Lusby A5' EOF 9/3/2012 9/10/2012 9/17/2012 9/24/2012 10/1/2012 10/8/2012 10/15/2012 10/22/2012 10/29/2012.

11/5/2012 11/12/2012 11/19/2012 11/26/2012 9/10/2012 9/17/2012 9/24/2012 10/1/2012 10/8/2012 10/15/2012 10/22/2012 10/29/2012 11/5/2012 11/12/2012 11/19/2012 11/26/2012 12/3/2012 fi fi

i fi fi fi fi fi

i

i

k

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i 12/3/2012 12/10/2012 12/10/2012 12/17/2012 12/17/2012 12/24/2012 12/24/2012 12/31/2012 Control Location

All Non-Natural Gamma Emitters <MDA 44

January 1 - December 31, 2012 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/m3 +/- 2c)

Start Date Stop Date Al A2 A3 A4 A51 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 1/2/2012 1/9/2012 2.5+/-0.2 2.2+/-0.2 2.4+/-0.2 2.5+/-0.2 2.4+/-0.2 1/9/2012 1/16/2012 2.0+/-0.1 2.0+/-0.1 2.1 +/-0.1 2.3+/-0.1 2.0+/-0.1 1/16/2012 1/23/2012 1.9 +/-0.1 1.8 +/-0.1 1.8 +/-0.1 2.1 +/-0.1 1.8 +/-0.1 1/23/2012 1/30/2012 2.5+/-0.1 2.4+/-0.1 2.4+/-0.1 2.7+/-0.2 2.5+/-0.1 1130/2012 2/6/2012 2.4+/-0.1 2.4+/-0.1 2.2+/-0.1 2.5+/-0.1 2.4+/-0.1 2/6/2012 2/13/2012 1.8+/-0.1 1.9+/-0.1 1.8+/-0.1 1.9+/-0.1 1.6+/-0.1 2/13/2012 2/20/2012 2.2+/-0.1 2.1+/-0.1 2.2+/-0.1 2.3+/-0.1 2.2+/-0.1 2/20/2012 2/27/2012 2.4+/-0.1 2.4+/-0.1 2.4+/-0.1 2.3+/-0.1 2.3+/-0.1 2/27/2012 3/5/2012 2.3 +/-0.1 2.2 +/-0.1 2.2 +/-0.1 2.8 +/-0.2 2.2 +/-0.1 3/5/2012 3/12/2012 2.1 +/-0.1 2.1 +/-0.2 2.1 +/-0.2 2.3+/-0.1 2.1 +/-0.1 3/12/2012 3/19/2012 2.5 +/-0.2 2.0 +/-0.1 2.2 +/-0.1 2.4 +/-0.1 2.0 +/-0.1 3/19/2012 3/26/2012 1.6+/-0.1 1.7+/-0.1 1.5+/-0.1 1.7+/-0.1 1.5+/-0.1 3/26/2012 4/2/2012 1.1 +/-0.1 1.2+/-0.1 1.3+/-0.1 1.5+/-0.2 1.3+/-0.1 4/2/2012 4/9/2012 2.0+/-0.1 1.7+/-0.1 1.5+/-0.1 2.0+/-0.1 1.8+/-0.1 4/9/2012 4/16/2012 1.7+/-0.1 1.6+/-0.1 1.6+/-0.1 2.0+/-0.1 1.8+/-0.1 4/16/2012 4/23/2012 1.5+/-0.1 1.5+/-0.1 1.4+/-0.1 1.5+/-0.1 1.4+/-0.1 4/23/2012 4/30/2012 2.2 +/-0.2 2.0 +/-0.1 2.0 +/-0.1 2.2 +/-0.2 2.2 +/-0.2 4/30/2012 5/7/2012 1.5+/-0.1 1.3+/-0.1 1.4+/-0.1 1.6+/-0.1 1.4+/-0.1 5/7/2012 5/14/2012 1.9+/-0.1 1.8+/-0.1 1.9+/-0.1 2.1 +/-0.1 1.9+/-0.1 5/14/2012 5/21/2012 1.4+/-0.1 1.4+/-0.1 1.2+/-0.1 1.4+/-0.1 1.4+/-0.1 5/21/2012 5/28/2012 1.0+/-0.1 1.1 +/-0.1 1.0+/-0.1 1.2+/-0.1 1.1 +/-0.1 5/28/2012 6/4/2012 1.8+/-0.1 1.9+/-0.1 1.8+/-0.1 1.8+/-0.1 1.7+/-0.1 6/4/2012 6/11/2012 1.4+/-0.1 1.4+/-0.1 1.4+/-0.1 1.5+/-0.1 1.5+/-0.1 6/11/2012 6/18/2012 1.2+/-0.1 1.2+/-0.1 1.1+/-0.1 1.4+/-0.1 1.2+/-0.1 6/18/2012 6/25/2012 3.1+/-0.2 2.8+/-0.2 2.8+/-0.2 3.0+/-0.2 2.7+/-0.2 6/25/2012 7/2/2012 2.7+/-0.2 2.4+/-0.1 2.4+/-0.1 3.0+/-0.2 2.7+/-0.2 45

January 1 - December 31, 2012 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/m3 +/- 2cr)

Start Date Stop Date Al A2 A3 A4 A51 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 7/2/2012 7/9/2012 3.2+/-0.2 3.0+/-0.2 2.8+/-0.2 3.5+/-0.2 3.0+/-0.2 719/2012 7/16/2012 1.5 +/- 0.1 1.6 +/- 0.1 1.6+/-0.1 1.8 +/- 0.1 1.7 +/- 0.1 7/16/2012 7/23/2012 2.3 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 2.5 +/-0.1 2.3 +/- 0.1 7/23/2012 7/30/2012 2.3 +/-0.1 2.2 +/-0.1 2.2 +/-0.1 2.5 +/-0.1 2.3 +/-0.1 7/30/2012 8/6/2012 2.3+/-0.1 2.3+/-0.1 2.1 +/-0.1 2.6+/-0.1 2.5+/-0.1 8/6/2012 8/13/2012 1.7+/-0.1 1.7+/-0.1 1.7+/-0.1 2.0+/-0.1 1.9+/-0.1 8/13/2012 8/20/2012 3.2 +/- 0.2 3.0 +/- 0.2 3.0 +/- 0.2 3.5 +/- 0.2 3.0 +/- 0.2 8/20/2012 8/27/2012 2.4+/-0.1 2.4+/-0.1 2.3+/-0.1 2.6+/-0.1 2.9+/-0.2 8/27/2012 9/3/2012 2.4+/-0.1 2.3+/-0.1 2.5+/-0.1 2.6+/-0.1 2.5+/-0.1 9/3/2012 9/10/2012 2.2 +/- 0.1 2.0 +/- 0.1 2.0 +/-0.1 2.3 +/- 0.1 2.1 +/-0.1 9/10/2012 9/17/2012 1.9+/-0.1 1.8+/-0.1 1.7+/-0.1 2.0+/-0.2 1.9+/-0.1 9/17/2012 9/24/2012 2.0 +/- 0.1 2.0 +/-0.1 1.9 +/- 0.1 2.0 +/- 0.1 1.9 +/- 0.1 9/24/2012 10/1/2012 3.3 +/- 0.1 3.1 +/- 0.1 3.0 +/- 0.1 3.5 +/- 0.2 3.0 +/- 0.1 10/112012 10/8/2012 2.8+/-0.2 2.8+1-0.2 2.7+/-0.2 3.0+/-0.2 3.1+/-0.2 10/8/2012 10/15/2012 2.2+/-0.2 2.1+/-0.2 2.5+/-0.2 2.5+/-0.2 2.8+/-0.2 10/15/2012 10/22/2012 2.1+/-0.1 2.1+/-0.1 2.3+/-0.1 2.4+/-0.1 2.5+/-0.1 10/22/2012 10/29/2012 3.6+/-0.2 3.6+/-0.2 3.8+/-0.2 4.1+/-0.2 4.4+/-0.2 10/29/2012 11/5/2012 0.6+/-0.1 0.6+/-0.1 0.7+/-0.1 0.7+/-0.1 0.7+/-0.1 11/5/2012 11/12/2012 2.6+/-0.1 2.6+/-0.1 2.8+/-0.2 3.0+/-0.2 3.2+/-0.2 11/12/2012 11/19/2012 2.9+/-0.2 2.9+/-0.2 3.0 +/- 0.2 3.3+/-0.2 3.7+/-0.2 11/19/2012 11/26/2012 3.2+/-0.2 3.1 +/-0.2 3.1+/-0.2 3.4+/-0.2 3.4+/-0.2 11/26/2012 12/3/2012 4.1+/-0.2 3.8+/-0.2 4.1+/-0.2 4.6+/-0.2 5.1 +/-0.2 12/3/2012 12/10/2012 2.2+/-0.1 2.0+/-0.1 2.1 +/-0.1 2.4+/-0.1 2.4+/-0.1 12/10/2012 12/17/2012 3.0 +/- 0.2 2.7 +/- 0.2 2.9 +/- 0.2 3.1 +/- 0.2 3.4 +/- 0.2 12/17/2012 12/24/2012 3.4 +/-0.1 2.9 +/-0.1 3.0 +/- 0.1 3.3 +/- 0.1 3.2 +/-0.1 12/24/2012 12/31/2012 1.3 +/- 0.2 1.2 +/-0.2 1.2 +/- 0.2 1.3 +/- 0.2 1.4 +/- 0.2 Control Location 46

January 1 - December 31, 2012 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/m3 +/- 2a)

Stop Date SFA1 SFA21 SFA3 Start Date SFA4 SSE of ISFSI MET Station Visitors Center NNW of ISFSI 1/2/2012 1/9/2012 1/16/2012 1/23/2012 1/30/2012 2/6/2012 2/13/2012 2/20/2012 2/27/2012 3/5/2012 3/12/2012 3/19/2012 3/26/2012 4/2/2012 4/9/2012 4/16/2012 4/23/2012 4/30/2012 5/7/2012 5/14/2012 5/21/2012 5/28/2012 6/4/2012 6/11/2012 6/18/2012 6/25/2012 7/2/2012 7/9/2012 7/16/2012 7/23/2012 7/30/2012 8/6/2012 8/13/2012 8/20/2012 8/27/2012 9/3/2012 9/10/2012 9/17/2012 9/24/2012 1/9/2012 1/16/2012 1/23/2012 1/30/2012 2/6/2012 2/13/2012 2/20/2012 2/27/2012 3/5/2012 3/12/2012 3/19/2012 3/26/2012 4/2/2012 4/9/2012 4/16/2012 4/23/2012 4/30/2012 5/7/2012 5/14/2012 5/21/2012 5/28/2012 6/4/2012 6/11/2012 6/18/2012 6/25/2012 7/2/2012 7/9/2012 7/16/2012 7/23/2012 7/30/2012 8/6/2012 8/13/2012 8/20/2012 8/27/2012 9/3/2012 9/10/2012 9/17/2012 9/24/2012 10/1/2012 2.7+/-0.2 2.1 +/- 0.1 1.9 +/- 0.1 2.5 +/- 0.1 2.3 +/- 0.1 1.7 +/- 0.1 2.1 +/-0.1 2.4 +/- O.1 2.3 +/- 0.1 2.0 +/- 0.1 2.2 +/- 0.1 1.5 +/- 0.1 1.3 +/- 0.1 2.0 +/- 0.1 1.9 +/- 0.1 2

2.2 +/- 0.2 1.4 +/- O.1 1.8 +/-0.1 1.3 +/- 0.1 1.1 +/-0.1 1.9 +/- 0.1 1.5 +/- 0.1 1.1 +/-0.1 2.9 +/- 0.2 2.8 +/- 0.2 3.2 +/- 0.2 1.6 +/- 0.1 2.4 +/- 0.1 2.2 +/- 0.1 2.1 +/-0.1 1.8 +/- 0.1 3.1 +/-0.2 2.4 +/- 0.1 2.6 +/- O.1 2.0 +/- 0.1 2.0 +/- 0.2 1.7 +/- 0.1 3.1 +/-0.1 2.7 +/- 0.2 2.1 +/-0.1 1.8 +/- 0.1 2.4 +/- 0.1 2.3+/-0.1 1.8 +/- 0.1 2.1 +/-0.1 2.4 +/- 0.1 2.2 +/- 0.1 2.2 +/- 0.1 2.1 +/- 0.1 1.5 +/- 0.1 1.1 +/-0.1 1.9 +/- 0.1 1.8 +/- 0.1 1.4 +/- 0.1 2.0 +/- 0.1 1.4 +/- 0.1 1.9 +/- 0.1 1.4 +/- 0.1 1.0 +/- 0.1 1.8 +/- 0.1 1.5 +/- 0.1 1.1 +/-0.1 2.9 +/- 0.2 2.5 +/- 0.1 3.0 +/- 0.2 1.5 +/- 0.1 3

2.1 +/-0.1 2.1 +/-0.1 4

3.0 +/- 0.2 2.3 +/- 0.1 2.3 +/- 0.1 2.1 +/-0.2 3

3 3.0 +/- 0.2 2.8 +/- 0.2 2.2 +/- 0.1 2.1 +/-0,1 2.5 +/- 0.1 2.4 +/- O.1 1.9 +/- 0.1 2.4 +/- 0.1 2.6 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 2.3 +/- 0.1 1.7 +/- 0.1 1.2 +/- 0.1 1.8 +/- 0.1 1.8 +/- 0.1 1.5 +/- 0.1 2.3 +/- 0.2 1.6 +/- 0.1 2.0 +/- 0.1 1.5 +/- 0.1 1.0 +/- 0.1 2.0 +/- 0.1 1.6 +/- 0.1 1.2 +/- 0.1 2.9 +/- 0.2 2.6 +/- 0.1 3.2+/-0.2 1.7 +/- 0.1 2.6 +/- 0.1 2.1 +/-0.1 2.4 +/- 0.2 1.7 +/- 0.1 3.0 +/- 0.2 2.4 +/- 0.1 2.4 +/- O.1 2.0 +/- 0.1 1.8 +/- 0.1 2.0 +/- 0.1 3.1 +/- 0.1 2.6 +/- 0.2 2.0 +/- 0.1 1.9+/-0.1 2.4 +/- 0.1 2.3 +/- 0.1 1.9 +/- 0.1 2.1 +/-0.1 2.4 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 2.2 +/- 0.1 1.5 +/- 0.1 1.1 +/-0.1 2.0 +/- 0.1 1.8 +/- 0.1 1.4 +/- 0.1 2.1 +/- 0.1 1.5 +/- 0.1 2.1 +/-0.1 1.3 +/- 0.1 1.0 +/- 0.1 1.8 +/- 0.1 1.6+/-0.1 1.2 +/- 0.1 3.0 +/- 0.2 2.7 +/- 0.2 3.2 +/- 0.2 1.5 +/- 0.1 4.2 +/- 0.3 3

2.1 +/-0.1 3

3.1 +/-0.2 2.4 +/- 0.1 2.3 +/- 0.1 2.0 +/- 0.1 1.8 +/- 0.1 2.0 +/- 0.1 3.0 +/- 0.1 47

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B Continued Start Date Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2cr)

Stop Date SFA1 SFA2 1 SFA3 MET Station Visitors NNW of ISFSI Center SFA4 SSE of SFSI 10/1/2012 10/8/2012 10/15/2012 10/22/2012 10/29/2012 11/5/2012 11/12/2012 11/19/2012 11/26/2012 12/3/2012 12/10/2012 12/17/2012 12/24/2012 Control Location 2 NCR, Lost Sample 3 NCR, Power outage 4 NCR, Reject data 10/8/2012 10/15/2012 10/22/2012 10/29/2012 11/5/2012 11/12/2012 11/19/2012 11/26/2012 12/3/2012 12/10/2012 12/17/2012 12/24/2012 12/31/2012 2.8 +/- 0.2 2.3 +/- 0.2 2.4 +/- 0.1 4.4 +/- 0.2 0.7 +/- 0.1 3.0 +/- 0.2 3.2 +/- 0.2 3.6 +/- 0.2 4.4 +/- 0.2 2.1 +/-0.1 3.1 +/-0.2 3.0 +/- 0.1 1.3 +/-0.2 2.7 +/- 0.2 2.2 +/- 0.2 2.2 +/- 0.1 3.6 +/- 0.2 0.6 +/- 0.1 2.7 +/- 0.2 2.9 +/- 0.2 3.4 +/- 0.2 4.2 +1-0.2 2.2 +/- 0.1 2.0+/-0.3 2.8 +/- 0.1 1.4 +/-0.2 2.8 +/- 0.2 2.1 +/-0.2 2.1 +/-0.1 3.8 +/- 0.2 0.7 +/- 0.1 2.7 +/- 0.2 2.7+/-0.2 3.4+/-0.2 4.1 +/-0.2 2.1 +/-0.1 3.1 +/-0.2 2.9 +/- 0.1 1.2 +/-0.2 2.7 +/- 0.2 2.6 +/- 0.2 2.4 +/- 0.1 3.8 +/- 0.2 0.7 +/- 0.1 2.9 +/- 0.2 3.2 +/- 0.2 3.6+/-0.2 4.5 +/- 0.2 2.4 +/- 0.1 3.3 +/- 0.2 2.8 +/- 0.1 1.3 +/- 0.2 48

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B-7 Concentration of Gamma Emitters in Air Particulates (Results in units of 10-' pCi/m3 +/- 2a)

Sample Date Al Entrance to Camp Conoy A2 Camp Conoy Siren A3 Bay Breeze Rd A4 Route 765 at Lusby A51 EOF 1/30/2012 2/27/2012 4/2/2012 4(30/2012 5/28/2012 7/2/2012 7/30/2012 9/3/2012 10/1/2012 10/29/2012 12/3/2012 12/31/2012 Sample Date SFA1 SFA2' SFA3 SFA4 MET Station Visitors Center NNW of ISFSI SSE of ISFSI 1/30/2012 2/27/2012 4/2/2012 4/30/2012 5/28/2012 7/2/2012 7/30/2012 9/3/2012 10/1/2012 10/29/2012 12/3/2012 12/31/2012 Control Location

All Non-Natural Gamma Emitters <MDA 49

January 1 - December 31, 2012 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) +/- 2a)

Sample Code Sample Date Sample Type Gamma Emitters IB1 Bay Breeze Rd IB2 Bay Breeze Rd 1B3 Bay Breeze Rd IB4 Camp Conoy Entrance 6/4/2012 7/16/2012 8/20/2012 6/4/2012 7/16/2012 8/20/2012 6/4/2012 7/16/2012 8/20/2012 6/4/2012 7/16/2012 8/20/2012 6/4/2012 7/16/2012 8/20/2012 6/4/2012 7/16/2012 8/20/2012 6/4/2012 7/16/2012 8/20/2012 6/4/2012 7/16/2012 8/20/2012 Cabbage Cabbage Leafy portion of Green Peppers Collards Collards Tree Leaves Brussels sprouts Brussels sprouts Tree Leaves Cabbage Cabbage Leafy portion of Green Peppers Collards Collards Eggplant Leaves Brussels sprouts Brussels sprouts Tree Leaves Cabbage Cabbage Leafy portion of Green Peppers Collards Collards Eggplant Leaves IB5 Camp Conoy Entrance 116 Camp Conoy Entrance IB71 EOF IB81 EOF IB9' EOF 6/4/2012 7/16/2012 8/20/2012 Brussels sprouts Brussels sprouts Collards 1 Control Location

All Non-Natural Gamma Emitters <MDA Control Location

All Non-Natural Gamma Emitters <MDA 50

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B-8b Concentration of Gamma Emitters in Vegetation From Locations Around the ISFSI (Results in units of pCi/kg (wet) +/- 2ar)

Sample Code Sample Date Cs-1 37 Gamma Emitters SFB1 MET Station SFB2 1 Visitor's Center SFB3 NNW of ISFSI SFB4 SSE of ISFSI SFB5 On Site Before Entrance to Camp Conoy 3/12/2012 6/11/2012 9/24/2012 11/26/2012 3/12/2012 6/11/2012 9/24/2012 11/26/2012 3/12/2012 6/11/2012 9/24/2012 11/26/2012 3/12/2012 6/11/2012 9/24/2012 11/26/2012 U

U U

U "k

t 3/12/2012 6/11/2012 9/24/2012 11/26/2012 83+/-28

t Control Location This isotope <MDA

All Non-Natural Gamma Emitters <MDA 51

January 1 - December 31, 2012 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) +/- 2ar Sample Code Sample Date Cs-1 37 Gamma Emitters SFS1 MET station SFS2' Visitors Center SFS3 NNW of ISFSI SFS4 SSE of ISFSI SFS5 Entrance to Camp Conoy 3/12/2012 6/11/2012 9/24/2012 11/26/2012 3/12/2012 6/11/2012 9/24/2012 11/26/2012 3/12/2012 6/11/2012 9/24/2012 11/26/2012 3/12/2012 6/11/2012 9/24/2012 11/26/2012 3/12/2012 6/11/2012 9/24/2012 11/26/2012 81 +/- 30 55 +/- 25 81 +/- 29 73 +/- 24 35 +/- 27 207 +/- 39 324 +/- 34 203 +/- 43 286 +/- 36

' Control Location 0 This isotope <MDA

All Non-Natural Gamma Emitters <MDA 52

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B-10 Typical MDA Ranges for Gamma Spectrometry Bay Water, Air Surface Ground Shoreline Selected Particulates

Water, Fish water Milk Oysters Sediment Soil Vegetation Nuclides (10-2 pCi/m 3)

Drinking (pCi/kg)wet (pCi/L)

(pCi/L)

(pCi/kg)wet (pCi/kg)Dry (pCi/kg)Dry (pCi/kg)wet (pCi/L)

Na-22 0-0 2.7-7.0 13.6-34.4 3.3-7.2 5.2-10.2 5.8-22.2 21.2-74.0 25.1 -82.5 12.5-50.4 K-40 0-0 27-75.8 94.3-284 35.7-84.0 44.4-85.1 71.4-188 218-519 230-697 84.0-445 Cr-51 0-0.1 22.1 -48.6 80.1 -416 24.1 -49.2 29.9-55.2 41.8-164 205-520 111 -670 65.0-294 Mn-54 0-0 2.4-6.2 14.3 - 27.2 2.9-6.5 3.9-7.8 4.6-17.4 18.9-55.0 22.3-70.3 10.0-39.6 Co-58 0-0 2.5-6.2 13.3-31.9 3.1 -6.5 3.9-7.8 5.0- 18.4 22.1 -59.3 20.7-70.9 9.8-40.6 Fe-59 0-0 5.5-12.9 39.1 - 118 5.9-12.5 9.2-18.3 13.3-48.5 53.1 -144 45.1 -172 23.6-93.1 Co-60 0-0 2.6-6.8 11.9-31.0 3.2-6.9 4.7-9.3 5.4-20.4 17.4-64.6 23.2-72.2 11.3-47.0 Zn-65 0-0 5.2-13.4 37.4-68.4 8.1 -17.5 9.6-19.6 11.3-41.6 52.5-153 53.9-189 24.5-98.0 Nb-95 0-0 2.6-6.4 12-51.7 2.8-6.8 3.7-7.9 5.8-23 29.8-78.1 21.2-97.1 9.7-42.7 Zr-95 0-0 4.1 -10.6 22.8-54.6 4.5-11.1 6.3-13.3 8.5-31.7 39.1 -101 38.3-132 15.0-70.3 Ru-106 0-0 20.3-54.4 84.4-209 23.1 -56.7 32.1 -65.6 37.7-137 144 -416 179.6-572 74.8 -344 Ag-110m 0-0 2.2-5.8 9.8-25.3 2.5-5.9 3.5-7.1 4.2-15.3 15.9-49.9 23.4-70.3 8.3-37.5 1-131" 0-42.1 0-6.5 0-233 2.2-10.2 0.5-0.8 0-126 20.2-516 0-249 13.2-59.5 Cs-134 0.0-0.0 2.3-6.0 9.9-22.4 2.7-7.0 3.3-7.3 6.6-24.1 14.6-55.6 33.9-73.5 9.1 -37.7 Cs-137 0.0-8.0 2.4-6.3 8.8-25.3 3.0-6.8 3.6-7.9 7.3-23.3 15.8-54.3 32.7 - 69.3 9.7-40.5 Ba-140 0.0-0.9 4.5-13.9 0- 676 4.6-10.9 5.3-11.2 4.7-77.2 57.4-274 0- 555 15.9-66.2 La-140 0.0-0.9 4.8-12.1 0-676 4.6-10.9 5.3-11.2 4.7-77.2 57.4-274 0-555 15.9-66.2 Ce-144 0-0 12.6-32.5 39.2-96.5 14.9-38.1 19.4-38.3 19.7-70.8 73.2-195.8 84.5-273 33.6-165 This MDA range for 1-131 on a charcoal cartridge is typically 4.16 x 10.3 to 3.40 x 10.2.

53

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B-I 1 Typical LLDs for Gamma Spectrometry Air Bay Water, Selected Particulates Surface Water, Fish pCi/kg Ground water Oysters Precipitation Soil pCi/kg Vegetation Nuclides 10-3 pCi/m3 Drinking Water (wet) pCi/L pCi/kg (wet) pCi/L (dry) pCi/kg (wet) 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-110m 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

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 cartridge is 2.0 x10"3 pCi/m3.

54

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B-12 Direct Radiation (Results in Units of mR/90 days +/- 2o)

Site Code DR01 DR02 DR03 DR04 DR05 DR06 DR07 DR08 Location On Site, along Cliffs Route 765, Auto Dump Route 765, Giovanni's Tavern Route 765, across from Vera's Beach Club Route 765, John's Creek Route 765 at Lusby Entrance to Camp Conoy Camp Conoy Rd at Emergency Siren First Quarter 12.63 +1- 0.50 10.95+/- 1.42 10.77 +/- 1.07 12.60 +1-1.18 12.44 +/- 1.21 10.50 +/- 1.29 10.53 +/- 0.81 14.69 +/- 2.24 Second Quarter 13.53 +/- 1.85 10.65 +/- 1.20 10.79 +/- 0.83 12.27 +1-1.33 12.57 +1- 0.87 10.70 +1-1.13 10.50 +/- 0.94 14.68 +1-1.16 Third Quarter 12.77 +- 1.25 10.79 +/- 1.07 9.95 +/- 0.80 12.00 +/- 0.86 12.08 +1- 0.59 10.16 +1- 0.67 10.29 +/- 1.36 15.04 +1- 0.80 Fourth Quarter 16.65 +/- 2.62 12.62 +/- 1.18 12.16 +/- 0.49 13.96 +/- 1.64 13.57 +/- 0.79 11.59 +/-

11.56 +/-

1.26 0.65 16.70 +/- 1.38 DR09 DRI0 DR1I DR12 DR13 Bay Breeze Rd Calvert Beach Rd and Decatur Street Dirt road off Mackall &

Parren Rd Mackall & Bowen Rds Mackall Rd, near Wallville 10.74 +1- 0.83 10.98 +/- 0.74 10.98 +/- 1.17 10.68 +1- 0.58 11.93 +/- 0.70 11.13+/- 1.42 10.63 +1- 0.93 11.20 +1-1.27 10.67 +/- 1.07 12.10 +/- 0.88 10.72 +/- 0.98 10.90 +1-1.03 10.83 +/- 0.73 10.61 +/- 0.44 11.93 +/- 1.06 12.58 +/-

12.08 +1-1.03 0.96 12.39 +1-14.10 +1-0.84 0.76 55

.4 January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B-12 Direct Radiation (Results in Units of mR/90 days +/- 20)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter DR14 Rodney Point 13.54 +/- 1.48 13.26 +/- 1.14 13.38 +/- 0.57 16.20 +/- 0.98 DR15 Mill Bridge & Turner 12.19 +/- 1.37 11.85 +/- 1.39 11.75 +1-2.09 13.63 +/- 0.97 Rds DR16 Across from Appeal 10.31 +1-1.40 11.21 +/- 0.92 10.80+/- 0.80 12.53+/- 2.24 School DR17 Cove Point & Little 12.46+/- 0.89 12.92+/- 1.06 1

14.37+/- 0.64 Cove Point Rds DR18 Cove Point 9.88 +/- 0.57 9.98 +/- 0.64 9.16 +/- 0.36 11.47 +1-1.06 DR19 Long Beach 10.67 +/- 1.29 10.68 +/- 1.11 10.45 +/- 1.28 12.87 +/- 1.13 DR20 On site, near shore 12.95+/- 0.61 13.65+/- 1.52 12.87+/- 1.37 15.45+/- 1.00 DR21 2 EOF 11.89 +/- 1.60 12.58 +/- 0.67 11.78 +/- 0.82 13.66 +/- 0.75 DR22 2 Solomons Island 11.18 +1-1.35 11.57 +/- 1.42 11.23 +/- 0.56 1

DR23 2 Taylors Island 14.08 +/- 0.80 15.77 +/- 1.01 16.85 +/- 1.01 17.83 +/- 1.31 DR30 MET Station 15.44 +/- 1.22 18.91 +/- 1.79 15.88 +/- 1.93 14.88 +/- 1.06 SFDR01 SW of ISFSI 20.22 +1-2.37 21.92 +/- 4.64 18.63 +/- 0.47 20.67 +/- 1.98 SFDR02 NNWof ISFSI 21.50 +/- 1.90 20.45 +1-3.49 19.39 +/- 2.00 21.53 +1-2.38 SFDR03 North of ISFSI 39.36 +1-4.35 39.95 +/- 6.99 31.97 +/- 4.31 46.59 +/- 8.49 SFDR04 NE of ISFSI 34.48 +/- 2.71 30.89 +/- 4.36 36.27 +/- 4.44 41.66 +/- 6.78 56

it January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table B-12 Direct Radiation (Results in Units of mR/90 days +/- 2y)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter SFDR05 SFDR06 SFDR07 2

SFDR08 SFDR09 SFDRIO SFDR11 SFDR12 SFDR13 SFDR14 SFDR15 SFDR16 SFDR17 East of ISFSI ESE of ISFSI Visitor's Center NNW of ISFSI SSE of ISFSI NW of ISFSI WNW ISFSI WSW of ISFSI South of ISFSI SE of ISFSI ENE of ISFSI SSW of ISFSI NNE of ISFSI West of ISFSI 20.92 +/- 2.44 17.18 +/- 1.13 12.03 +1- 0.33 33.67 +/- 4.87 17.28+1-1.15 34.13 +/- 5.70 36.24 +/- 2.87 48.82 +/- 15.74 23.16 +/- 6.14 19.50 +/- 3.38 23.71 +1-4.83 37.94 +1-7.20 40.62 +1-6.52 53.28 +1-9.22 19.78 +/- 1.84 16.88 +/- 1.45 12.04 +1- 0.73 35.35 +/- 3.69 14.12 +/- 1.47 38.60 +1-6.79 38.51 +/- 6.24 49.32 +/- 12.26 23.16 +/- 6.01 17.76 +1-3.63 21.98 +/- 6.04 37.99 +1-4.61 39.86 +/- 7.19 51.95+/- 10.14 18.44 +/- 2.68 16.83 +/- 2.05 12.61 +/- 1.03 29.22 +/- 4.43 14.10 +/- 1.13 30.60 +/- 7.39 33.93 +/- 6.30 49.10 +/- 10.84 20.40 +/- 4.15 13.67 +/- 1.36 21.82 +/- 3.45 37.82 +/- 4.83 42.30 +/- 7.32 47.23 +/- 8.86 22.89 +/-

19.38 +1-14.35 +/-

31.34 +/-

16.43 +/-

40.58 +1-35.22 +/-

50.05 +/-

27.97 +/-

17.08 +1-23.77 +/-

40.96 +/-

49.20 +/-

4.31 1.91 1.09 4.93 1.33 6.95 5.04 9.37 1.74 2.27 2.70 4.96 8.85 SFDR18 54.34 +/- 9.14 TLD mnigsing 2Control Location 57

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 APPENDIX C Quality Assurance Program Appendix C is a summary of Constellation Energy laboratory's quality assurance program. It consists of Table C-I which is a compilation of the results of the Constellation Energy laboratory's participation in an interlaboratory comparison program with Environmental Resource Associates (ERA) located in Arvada, Colorado and Analytics, Inc. located in Atlanta, Georgia. It also includes Table C-2, which is a compilation of the results of the Constellation Energy laboratory's participation in a split sample program with Teledyne Brown Engineering located in Knoxville, Tennessee, and Table C-3, which is a list of typical MDAs achieved by Teledyne Brown for Gamma Spectroscopy.

All the Constellation Energy laboratory's results contained in Table C-I generally agree with the interlaboratory's comparison results within the range of +/-2o of each other. In addition, all the sets of intercomparison results in the table are in full agreement when they were further evaluated using the NRC Resolution Test Criteria'. The uncertainties for the Constellation Energy laboratory's results and Analytics' results are +/-20 while the ERA laboratory's uncertainty is based on USEPA guidelines2.

All the Constellation Energy laboratory's results contained in Table C-I generally agree with the intercomparison results within the range of +2o of each other with the exception of a beta result for the water sample type on 6/14/12 from Analytics. In 2011 the June water study had a similar performance issue and the initial investigation into the matter yielded no apparent cause for this discrepancy. A sample preparation error was thought to be the most probable explanation.

Further investigation into the 2012 and 2011 samples revealed that they contained a similarly high level of Americium 241 as compared to Cesium 137. It was determined that the lab's result was high due to the interference of alpha from the Americium. The laboratory does not encounter alpha emitters in the Constellation Energy Nuclear Generation Fleet and so does not have an alpha correction in its Beta result calculations. All other intercomparisons for beta filters and water samples analyzed on the instrument, prior to and after this sample, were in full agreement.

With this one exception, all other sets of intercomparison results listed in the table are in full agreement when they were further evaluated using the NRC Resolution Test Criteria1. The uncertainties for the Constellation Energy laboratory's results and Analytics' results are +/-2y while the ERA laboratory's uncertainty is based on USEPA guidelines2.

All the results contained in Table C-2 agree within the range of +/-2a of each other with their respective Constellation Energy laboratory original, replicate and/or Teledyne Brown Engineering's split laboratory samples, except for the comparisons of two soil samples and an oyster sample involving Cs-137 results. The original and replicate analysis of the soil sample from SFS3 collected on 6/11/2012 do agree within +2a of each other and do not agree within

+/-2y of the split lab results. The original analysis of the soil sample from SFS5 collected on 6/11/2012, and the original analysis of the oyster sample collected on 8/23/2012 do not agree within the range of +/-2a of their respective QC comparison samples analyzed. These minor

'NRC Inspection Manual, Inspection Procedure 84750, March 15, 1994.

2 National Standards for Water Proficiency Testing Studies Criteria Document, December 1998.

58

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 discrepancies, which have been observed in previous reporting periods, are most probably due to counting statistics and/or the non-homogeneous nature of this type of sample. Other samples whose nature generally preclude sample splitting are marked "**" in the Split Analysis column.

59

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS - ANALYTICAL RESULTS Table Title Page C-1 Results of Participation in Cross Check Programs............................................................

61 C-2 Results of Quality Assurance Program................................................................................

64 C-3 Teledyne Brown Engineering's Typical MDAs for Gamma Spectrometry...................... 71 60

14 January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-1 Results of Participation in Cross Check Programs Sample Type and Reported Cross Check Lab Sample Date Units Isotope Observed Laboratory's Results Results 03/15/12 Air Iodine - pCi 1-131 84.0 +/- 5.0 93.2 +/- 1.6 03/15/12 Milk - pCi/L Co-58 Co-60 Zn-65 1-131 Cs-1 34 Cs-1 37 Ce-141 Cr-51 Mn-54 Fe-59 116+/-14 269 +/- 14 302 +/-31 91+/-22 118 +/- 9.0 144 +/- 14 238 +/- 17 443 +/- 86 188 +/- 16 158+/-19 132 +/- 2.2 279 +/- 4.7 333 +/- 5.6 92.5 +/- 1.5 149 +/- 2.5 159 +/- 2.7 260 +/- 4.3 436 +/- 7.3 195 +/- 3.3 168 +/- 2.8 297 +/- 4.96 46.5 +/- 0.8 120.0 +/- 2.0 74.9 +/- 1.3 113.0 +/- 1.9 201.0 +/- 3.4 52.3 +/- 0.9 72.3 +/- 1.2 22.7 +/- 3.8 98.8 +/- 1.7 03/15/12 06/14/12 Water - pCi/L Air Filter - pCi Gross Beta Ce-1 41 Cs-1 37 Mn-54 Zn-65 Co-60 Co-58 Fe-59 Cr-51 Cs-134 336 +/-4.0,

50.0 +/-4.0 127.0 +/- 8.0 78.0 +/- 7.0 128.0 +/- 16.0 207.0 +/- 9.0 51.0 +/- 7.0 84.0 +/- 10.0 244.0 +/- 4.0 85.0 +/- 5.0 06/14/12 06/14/12 Water-pCi/L Water - pCi/L H-3 26.3E+4 25.OE+4 Cr-51 Cs-137 Cs-134 1-131 Ce-141 Co-60 Co-58 Fe-59 Mn-54 595.0 +/- 110.0 285.0 +/- 18.0 213.0 +1-10.0 106.0 +/- 22.0 123.0 +/- 18.0 504.0 +/- 18.0 114.0 +/- 14.0 191.0 +/- 21.0 179.0 +/- 16.0 548.0 +/- 9.1 289.0 +/- 4.8 238.0 +1-4.0 99.4 +1-1.7 112.0 +/- 1.9 484.0 +1-8.1 126.0 +/- 2.1 174.0 +/- 2.9 180.0 +/- 3.0 61

II January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-i Results of Participation in Cross Check Programs Sample Type and Reported Cross Check Lab Sample Date Units Isotope Observed Laboratory's Results Results Zn-65 275.0 +/- 30.0 272.0 +/- 4.5 06/14/12 07/09/12 07/09/12 09/13/12 09/13/12 10/05/12 Water - pCi/L "I Water - pCi/L Water - pCi/L Air Filter - pCi Water - pCi/L Water - pCi/L Gross Beta Co-60 Zn-65 Cs-1 34 Cs-1 37 Ba-1 33 1-131 Gross Beta Gross Beta H-3 12/06/12 Air Filter - pCi Co-60 Zn-65 Cs-1 34 Cs-1 37 Ba-1 33 1-131 Mn-54 Fe-59 Co-58 Co-60 Cr-51 Cs-1 34 Cs-1 37 Ce-141 Zn-65 211.0 +/- 3.0 46.0 +/-2.0 101.0 +/- 7.0 75.2 +/-2.0 196.0 +/- 6.0 54.1 +/-3.0 24.7 +/- 4.0 24.88 97.2 +/- 2.0 9.23E+05 78.0 +/-4.0 212.0 +/- 14.0 70.0 +/-3.0 185.0 +/- 8.0 82.0 +/-4.0 23.0 +/-4.0 101.0 +/- 7.0 109.0 +/- 8.0 82.0 +/-7.0 154.0 +/- 6.0 281.0 +/- 29.0 118.0 +/- 5.0 102.0 +/- 6.0 43.0 +/- 4.0 178.0 +/- 15.0 66.0 +/- 4.0 9.30E+02 148.0 +/- 2.47 78.3 204.0 76.6 183.0 84.8 24.8 51.3 98.9 92.5 216.0 65.0 26.5 36.8 94.9 +/- 1.58 1.OOE+06 104.0 +/- 1.7 104.0 +/- 1.7 88.8 +/- 1.5 153.0 +/- 2.6 313.0 +/- 5.2 149.0 +/- 2.5 105.0 +/- 1.8 46.0 +/- 0.8 167.0 +/- 2.8 72.8 +/- 1.2 2.50E+02 12/06/12 12/06/12 Air Iodine - pCi Water - pCi/L 1-131 H-3 62

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-I Results of Participation in Cross Check Programs Sample Type and Cross Check Lab Sample Date Units Isotope Observed Laboratory's Results Results 12/06/12 Milk - pCi/L Fe-59 149.0 +/-19.0 116.0 +/- 1.9 Co-58 113.0 +/- 14.0 98.5 +/- 1.7 Co-60 203.0 +1-13.0 170.0 +/- 2.8 Mn-54 119.0 +/-13.0 116.0 +/- 1.9 Zn-65 220.0 +/-31.0 186.0 +/- 3.1 1-131 106.0 +/- 15.0 90.0 +/- 1.5 Cs-1 34 184.0 +/- 10.0 165.0 +/- 2.8 Cs-137 129.0 +/- 13.0 117.0 +/-2.0 Ce-141 63.0 +/- 13.1 51.0 +/- 0.9 Cr-51 427.0 +/- 69.0 348.0 +/- 5.8 12/06/12 Water - pCi/L Gross Beta 219.0 +/- 3.0 274.0 +/- 4.57 See discussion at the beginning of the Appendix.

63

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Type of Original Replicate Split Analysis Sample Type Sample Date Analysis Analysis (2)

Analysis (2)

(2) and Location Air1 'IILtI - A I Air Filter - A2 Air Filter - A3 Air Filter - A4 Air Filter - A5 Air Filter - SFA1 Air Filter - SFA2 Air Filter - SFA3 Air Filter - SFA4 Air Iodine - A2 Air Iodine - A4 Air Iodine - A5 Air Filter - Al Air Filter - A3 Air Filter - A4 Air Filter - A5 Air Filter - SFA1 Air Filter - SFA2 Air Filter - SFA3 Air Filter - SFA4 Air Iodine -A2 Air Iodine - A3 Air Filter - Al Air Filter - A2 Air Filter - A3 Air Filter - A4 Air Filter - A5 Air Filter - SFA1 Air Filter - SFA2 Air Filter - SFA3 Air Filter - SFA4 U I1U4I I.

01/09/12 01/09/12 01/09/12 01/09/12 01/09/12 01/09/12 01/09/12 01/09/12 01/16/12 01/16/12 01/16/12 02/06/12 02/06/12 02/06/12 02/06/12 02/06/12 02/06/12 02/06/12 02/06/12 02/06/12 02/06/12 02/14/12 02/14/12 02/14/12 02/14/12 02/14/12 02/14/12 02/14/12 02/14/12 02/14/12

,.rI U OULd Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Z-0 +I"- U.z 2.2 +/- 0.1 2.4 +/- 0.2 2.5+/-0.2 2.4 +/- 0.2 2.7 +/- 0.2 2.7 +/- 0.2 2.8 +/- 0.2 2.6 +/- 0.2 Z. I +I-U.

2.3+/0.2 2.3+/-0.2 2.7+/-0.2 2.4+/-0.2 2.6+/0.2 2.5+/-0.2 2.8+/-0.2 2.5+/-0.2 1-131 1-131 1-131 Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta 2.4 +/- 0.1 2.2 +/- 0.1 2.5 +/- 0.1 2.4 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 2.4 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 2.1 +/-0.1 2.4 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 2.4 +/- 0.1 2.4 +/- 0.1 2.2 +/- 0.1 1-131 1-131 Gamma Gamma Gamma Gamma Gamma Gamma Gamma Gamma Gamma 64

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Type of Original Replicate Split Analysis Sample Type Sample Date Analysis Analysis (2)

Analysis (2)

(2) and Location Air Filter - Al 03/05/12 Gross Beta 2.2 +/- 0.1 2.2 +/- 0.1 Air Filter - A2 03/05/12 Gross Beta 2.2 +/- 0.1 2.2 +/- 0.1 Air Filter - A3 03/05/12 Gross Beta 2.2 +/- 0.1 2.1 +/- 0.1 Air Filter - A4 03105/12 Gross Beta 2.7 +/- 0.2 3.1+/- 0.2 Air Filter - A5 03/05/12 Gross Beta 2.2 +/- 0.1 2.3 +/- 0.1 Air Filter - SFA1 03/05/12 Gross Beta 2.3 +/- 0.1 2.3 +/- 0.1 Air Filter - SFA2 03/05/12 Gross Beta 2.2 +/- 0.1 2.3 +/- 0.1 Air Filter - SFA3 03/05/12 Gross Beta 2.3 +/- 0.1 2.4 +/- 0.1 Air Filter - SFA4 03/05/12 Gross Beta 2.3 +/- 0.1 2.3 +/- 0.1 Soil - SFS1 03/12/12 Gamma Soil - SFS4 03/12/12 Gamma Oysters - IA3 03/14/12 Gamma Air Iodine - Al 03/28/12 1-131 Air Iodine - A2 03/28/12 1-131 Shoreline Sediment - WBI 03/28/12 Gamma Air Filter - Al 04/09/12 Gross Beta 2.0 +/- 0.1 2.0 +/- 0.1 Air Filter - A2 04/09/12 Gross Beta 1.6 +/- 0.1 1.6 +/- 0.1 Air Filter - A3 04/09/12 Gross Beta 1.5 +/- 0.1 1.6 +/- 0.1 Air Filter - A4 04/09/12 Gross Beta 2.0+/-0.l 2.1 +/-0.1 Air Filter - A5 04/09/12 Gross Beta 1.8 +/- 0.1 1.8 +/- 0.1 Air Filter - SFA1 04/09/12 Gross Beta 2.0 +/- 0.1 2.0 +/- 0.1 Air Filter - SFA2 04/09/12 Gross Beta 1.9 +/- 0.1 2.0 +/- 0.1 Air Filter - SFA3 04/09/12 Gross Beta 1.8 +/- 0.1 1.9 +/- 0.1 Air Filter - SFA4 04/09/12 Gross Beta 2.0 +/- 0.1 1.9 +/- 0.1 Air Iodine - A3 04/09/12 1-131 Air Iodine - A4 04/09/12 1-131 65

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Type of Original Replicate Split Analysis Sample Type Sample Date Analysis Analysis (2)

Analysis (2)

(2) and Location Air Filter - Al Air Filter - A2 Air Filter - A3 Air Filter - A4 Air Filter - A5 Air Filter - SFA1 Air Filter - SFA2 Air Filter - SFA4 Air Iodine - Al Air Iodine - A2 Misc ground coverage - SFB2 Misc ground coverage - SFB3 Misc ground coverage - SFB5 Soil - SFS2 Soil - SFS3 Soil - SFS5 Bottom sediment

- WBS2 Bottom sediment

- WBS4 05/07/12 05/07/12 05/07/12 05/07/12 05/07/12 05/07/12 05/07/12 05/07/12 05/28/12 05/28/12 06/11/12 06/11/12 06/11/12 06/11/12 06/11/12(1) 06/11/12(1) 06/19/12 06/19/12 06/19/12 06/19/12 06/20/12 06/20/12 06/20/12 06/20/12 06/20/12 Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta 1.5 +/-0.1 1.2 +/- 0.1 1.4 +/- 0.1 1.6 +/- 0.1 1.4 +/- 0.1 1.4 +/- 0.1 1.4 +/- 0.1 1.5 +/- 0.1 1.4 +/- 0.1 1.3 +/- 0.1 1.3 +/- 0.1 1.6 +/- 0.1 1.4 +/- 0.1 1.4 +/- 0.1 1.5 +/- 0.1 1.4 +/- 0.1 1-131 1-131 Gamma Gamma Gamma Gamma Cs-1 37 Cs-1 37 Cs-1 37 Cs-1 37 Gamma Gamma 34.7 +/- 27.0 324.2 +/- 33.9 128.9 +/- 39.2 128.6 +/- 35.3 56.5 +/- 24.8 260.0 +/- 31.7 92.4 +/- 43.0 85.4 +/- 37.7 120.0 +/-40.1 663.0 +/- 49.3 196.0 +/- 46.8 163.0 +/- 46.8 Oysters - IA3 Oysters - IA6 DR05 DR06 DR07 DR08 DR09 TLD TLD TLD TLD TLD 12.0 +/- 0.8 10.2 +/- 1.1 10.0 +/- 0.9" 14.0 +/- 1.1 10.6 +/- 1.3 13.0 +/- 0.5 11.5 +/- 1.4 12.0 +/- 1.1 15.9 +/- 2.0 11.9 +/- 0.9 66

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Type of Original Replicate Split Analysis Sample Type Sample Date Analysis Analysis (2)

Analysis (2)

(2) and Location DR10 06/20/12 TLD 10.1 +/-0.9 11.7+/-1.1 DR11 06/20/12 TLD 10.7 +/- 1.2 12.2 +/- 1.2 DR29 06/20/12 TLD 13.3+/-2.8 15.5+/-1.2 DR31 06/20/12 TLD 13.6+/-2.1 17.0+/-2.7 SFDR14 06/20/12 TLD 16.5 +/- 4.3 19.4 +/- 4.3 SFDR15 06/20/12 TLD 21.0 +/- 5.7 24.8 +/- 3.8 Air Iodine - Al 06/25/12 1-131 Air Iodine - A3 06/25/12 1-131 Air Iodine - A4 06/25/12 1-131 Bay Water -

WA1 06/28/12 Gamma Bay Water -

WA2 06/28/12 Gamma Air Iodine - Al 07/09/12 1-131 Air Iodine - A2 07/09/12 1-131 Air Iodine - A5 07/09/12 1-131 Brussels sprouts

- 1B3 07/16/12 Gamma Brussels sprouts

- 1B9 07/16/12 Gamma Cabbage - IB1 07/16/12 Gamma Cabbage-1B4 07/16/12 Gamma Cabbage - IB7 07/16/12 Gamma Collards - IB2 07/16/12 Gamma Collards - lB5 07/16/12 Gamma Collards - 1B8 07/16/12 Gamma Air Filter - Al 08/06/12 Gross Beta 2.3 +/- 0.1 2.3 +/- 0.1 Air Filter - A2 08/06/12 Gross Beta 2.2 +/- 0.1 2.3 +/- 0.1 Air Filter - A3 08/06/12 Gross Beta 2.1 +/- 0.1 2.2 +/- 0,1 Air Filter - A4 08/06/12 Gross Beta 2.6 +/- 0.1 2.5 +/- 0.1 67

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Type of Original Replicate Split Analysis SampleType SampleDate Analysis Analysis (2)

Analysis (2)

(2) and Location Air Filter - A5 08/06/12 Gross Beta 2.5 +/- 0.1 2.3 +/- 0.1 Air Filter - SFA1 08/06/12 Gross Beta 2.1 +/- 0.1 2.4 +/- 0.1 Air Filter - SFA2 08/06/12 Gross Beta 2.1 +/- 0.1 2.1 +/- 0.1 Air Filter - SFA3 08/06/12 Gross Beta 2.3 +/- 0.2 2.3 +/- 0.1 Air Filter - SFA4 08/06/12 Gross Beta 2.1 +/- 0.1 2.3 +/- 0.1 Air Iodine - A4 08/13/12 1-131 Air Iodine - A5 08/13/12 1-131 Lake Trout -

NORTH 08/23/12 Gamma Oysters - IA3 08/23/12 Gamma Oysters - IA6 08/23/12 Cs-137 15.3 +/- 6.5 Oysters - IA6 08/23/12 Gamma Striped bass -

IA5 08/23/12 Gamma Air Filter - Al 09/10/12 Gross Beta 2.2 +/- 0.1 2.1 +/- 0.1 Air Filter - A2 09/10/12 Gross Beta 2.0 +/- 0.1 2.0 +/- 0.1 Air Filter - A3 09/10/12 Gross Beta 2.0 +/- 0.1 2.0 +/- 0.1 Air Filter - A4 09/10/12 Gross Beta 2.3 +/- 0.1 2.4 +/- 0.1 Air Filter -A5 09/10/12 Gross Beta 2.1 +/- 0.1 2.1 +/- 0.1 Air Filter - SFA1 09/10/12 Gross Beta 2.0 +/- 0.1 2.2 +/- 0.1 Air Filter - SFA2 09/10/12 Gross Beta 2.1 +/- 0.2 2.1 +/- 0.2 Air Filter - SFA3 09/10/12 Gross Beta 2.0 +/- 0.1 2.1 +/- 0.1 Air Filter - SFA4 09/10/12 Gross Beta 2.0 +/- 0.1 2.0 +/- 0.1 Air Iodine - Al 09/17/12 1-131 Air Iodine - A2 09/17/12 1-131 Air Filter - Al 10/15/12 Gross Beta 2.2 +/- 0.2 2.3 +/- 0.2 Air Filter - A2 10/15/12 Gross Beta 2.1 +/- 0.2 2.2 +/- 0.2 Air Filter - A3 10/15/12 Gross Beta 2.5 +/- 0.2 2.3 +/- 0.2 68

1.

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Type of Original Replicate Split Analysis Sample Type Sample Date Analysis Analysis (2)

Analysis (2)

(2) and Location Air Filter - A4 Air Filter - A5 Air Filter - SFA1 Air Filter - SFA2 Air Filter - SFA3 Air Filter - SFA4 Oysters - IAM Oysters - IA6 Rainbow Trout -

NORTH Air Filter - Al Air Filter - A2 Air Filter - A3 Air Filter - A4 Air Filter - A5 Air Filter - SFA1 Air Filter - SFA2 Air Filter - SFA3 Air Filter - SFA4 Air Iodine - Al Air Iodine - A2 Air Iodine - A3 Bay Water -

WA1 Bay Water -

WA2 Air Iodine - Al Air Iodine - A5 IV/ Iul I/-

10/15/12 10/15/12 10/15/12 10/15/12 10/15/12 10/25/12 10/25/12 11/16/12 11/19/12 11/19/12 11/19/12 11/19/12 11/19/12 11/19/12 11/19/12 11/19/12 11/19/12 12/10/12 12/10/12 12/10/12 12/28/12 12/28/12 12/31/12 12/31/12 Gross DBeta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta 2.8 "r/- U.2 2.8 +/- 0.2 2.3 +/- 0.2 2.2 +/-0.2 2.1 +/- 0.2 2.6 +/- 0.2 Z.

I +I-U.z 2.6 +/- 0.2 2.3 +/- 0.2 2.2 +/- 0.2 2.2+/-0.2 2.4 +/- 0.2 Gamma Gamma Gamma Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta Gross Beta 2.9+/-0.2 2.9+/-0.2 3.0+/-0.2 3.3+/-0.2 3.7+/-0.2 3.2+/-0.2 2.9+/-0.2 2.7+/-0.2 3.2+/0.2 2.8 +/- 0.2 2.8 +/- 0.2 3.1 +/- 0.2 3.3+/-0.2 3.5+/-0.2 3.2+/-0.2 2.6+/-0.2 2.7+/-0.2 3.2+/-0.2 1-131 1-131 1-131 Gamma Gamma 1-131 1-131 69

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Sample Type Sample Date Type of Original Replicate Split Analysis and Location Analysis Analysis (2)

Analysis (2)

(2)

DR05 01/03/13 TLD 13.6 +/- 0.8 13.5 +1-1.0 DR06 01/03/13 TLD 11.6+/-1.3 11.4+/-1.1 DR07 01/03/13 TLD 11.6+/-0.6 11.4+/-0.7 DR08 01/03/13 TLD 16.7 +/- 1.4 16.1 +/- 1.4 DR09 01/03/13 TLD 12.6+/-1.0 11.9+/-1.4 DR10 01/03/13 TLD 12.1 +/-1.0 12.1+/-2.6 DR29 01/03/13 TLD 16.5 +/- 2.1 17.4 +/- 1.8 DR31 01/03/13 TLD 17.4+/-2.1 17.4+/-2.1 SFDR14 01/03/13 TLD 17.1 +/- 2.3 18.0 +/- 1.4 SFDR15 01/03/13 TLD 23.8 +/- 2.7 25.3 +/- 1.9 See discussion at the beginning of the Appendix.

2 Results reported for Air samples 1-131 and Beta are in 10-2 pCi/m3. All Vegetation and Soil, Oysters and Fish are in pCi/kg. All water and milk are in pCi/L. TLD are in mR/90 Day.

All Non-Natural Gamma Emitters are <MDA

- The nature of these samples precluded splitting them with an independent laboratory.

70

=r*

January I - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table C-3 Teledyne Brown Engineering's Typical MDAs for Gamma Spectrometry Selected Bay Water Fish Shellfish Sediment Vegetation Particulates Nuclides pCi/L pCi/kg pCi/kg pCi/kg pCi/kg 10-3pCi/m 3 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

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 71

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 APPENDIX D Land Use Survey Appendix D contains the results of a Land Use Survey conducted around Calvert Cliffs 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 A Land Use Survey was conducted to identify, within a distance of 5 miles, the location of the nearest milk animal, the nearest residence, and the nearest garden greater than 50 m2 in each of the nine sectors over land. A detailed description of the Land Use Survey is given in a separate document (Ref. 9). The position of the nearest residence and garden in each sector out to 5 miles is given in the adjacent table. There are no animals producing milk for human consumption within the 5-mile radius. The nearest garden/resident has changed since 2011 and is still located within the 5-mile radius in the SW sector.

Distance From Plant (miles)

Sector Residence Garden SE 1.5 1.5 SSE 1.6 2.4*

S 1.6 1.6*

SSW 1.5 1.6 SW 1.1 1.1 WSW 1.3 1.4 W

1.3 1.3*

WNW 2.7 2.7 NW 2.0 2.1*

The closest residence is situated in the SW sector and the nearest garden is also in the SW sector, which is one of the least prevalent wind directions. In 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 X/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.

GPS was used to determine distance from the central point between the two containment buildings.

72

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 APPENDIX E Additional Samples and Analysis Results Appendix E is 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-I 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-I1 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 Initiative 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 nine on-site piezometer tubes in 2012. 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 piezometer tubes sampled, only # 11 piezometer tube 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 2012 analysis results for Tritium are shown in Table E-11, and analysis results for gamma emitting radionuclides are shown in Table E-12.

73

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS - ANALYTICAL RESULTS Table Title Page E-1 Locations of Non-Tech Spec Environmental Sampling Stations for Calvert Cliffs Nuclear P ow er P lant..............................................................................................................................

75 E-2 Synopsis of 2012 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environmental Monitoring Program..................................................................................

76 E-3 Annual Summary for Calvert Cliffs Nuclear Power Plant Units I & 2 Non-Tech Spec Radiological Environmental Monitoring Program............................................................

77 E-4 Concentration of Gamma Emitters in Bottom Sediment...................................................

78 E-5 Concentration of Iodine-131 in Filtered Air......................................................................

79 E-6 Concentration of Beta Emitters in Air Particulates.............................................................

81 E-7 Concentration of Gamma Emitters in Air Particulates.....................................................

83 E-8 Concentration of Tritium and Gamma Emitters in Taylorslsland Well Water...................

84 E -9 D irect R adiation.......................................................................................................................

85 E-10 Direct Radiation from Resin Storage Area.........................................................................

86 E-11 Concentration of Tritium in Groundwater.........................................................................

87 E-12 Gross Concentration of Gamma Emitters in Groundwater.................................................

88 Figure Title Page E-1 Site Map of Groundwater Monitoring Wells......................................................................

89 74

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 TABLE E-1 Locations of Non-Tech Spec Environmental Sampling Stations for Calvert Cliffs Nuclear Power Plant Station Description Distance' Direction' (KM)

(Miles)

(Sector)

A6 Long Beach 4.4 2.7 NW A7 Taylors Island, Anderson's Property 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 Camp Conoy 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 Taylors Island Emergency Siren #35 12.3 7.6 ENE DR29 Taylors Island Emergency Siren #38 12.5 7.8 E

DR31 Cambridge, U of MD Estuarine Center 32.0 19.9 NE DR32 Twining Property, 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 OSGDR1 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 RPDR1O Resin Storage Area - South Fence Lower 0.7 0.4 SW RPDRI 1 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 WWI Taylors Island, Anderson's Property 12.6 7.8 ENE Distance and direction from the central point between the two containment buildings.

75

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-2 Synopsis of 2012 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environmental Monitoring Program Sample Type Sampling Number of Number Analysis Analysis Number Frequency' Locations Collected Frequency' Analyzed Aquatic Environment Bottom Sediment SA 2

4 Gamma SA 4

Atmospheric Environment Air Iodine 2 W

7 358 1-131 W

358 Air Particulates 3 W

3 156 Gross Beta W

156 Gamma MC 36 Direct Radiation Ambient Radiation Q

20 468 TLD Q

468 Terrestrial Environment Ground water M

1 12 Gamma M

12 H-3 M

12 W=weekly, M=monthly. Q-quarterly, SA=semiannual, A=annual, C=composite The collection device contains charcoal.

3 Beta counting is performed after >72 hour decay. Gamma spectroscopy performed on monthly composites of weekly samples.

76

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-3 Annual Summary for Calvert Cliffs Nuclear Power Plant Units 1 & 2 Non-Tech Spec Radiological Environmental Monitoring Program Medium or Pathway Sampled (Unit of Measurement)

Type and Total Number of Analyses Performed Lower Limit of Detection (LLD)

Indicator Locations Mean (F)/Rangel Location with Highest Annual Mean Name/Distance &

Direction 2

Highest Annual Mean (F) / Range1 Control Locations Mean (F)/Range Aquatic Environment Bottom Sediment (pCi/kg)

Atmospheric Environment Air Particulates (10-2 pCi/m 3)

Gamma (4)

Cs-137 133 (2/2)

(129-137)

Discharge Area WBS2 0.3 km N TAYLOR'S ISLAND TI 12.6 km ENE 133 (2/2)

(129-137) 115 (2/2)

(102-129)

Gross Beta (156) 0.5 2.1 (104/104)

(0.7-4.4) 2.2 (52/52)

(0.8-4.1) 2.2 (52/52)

(0.8-4.1)

Direct Radiation Ambient Radiation TLD (468) 55.85 (468/468)

South Fence 211.61 (24/24)

(mR/90 days)

(9.36-296.86)

Upper RPDR09 (129.34-296.86) 0.7 km SW Mean and range based upon detectable measurements only. Fraction (F) of detectable measurements at specified location is indicated in parentheses Distance and direction from the central point between the two containment buildings.

77

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-4 Concentration of Gamma Emitters in Bottom Sediment (Results in units of pCi/kg (dry) +/- 2a)

Sample Code Sample Date Cs-1 37 Gamma Emitters WBS2 Discharge Area 6/19/2012 129+/-39 10/25/2012 137 +/- 43 WBS4 1 Camp Conoy/ Rocky Point 6/19/2012 129+/-35 10/25/2012 102+/-34 Control Location

All Non-Natural Gamma Emitters <MDA 78

--4 January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-5 Concentration of Iodine-131 in Filtered Air (Results in units of 10-3 pCi/M3 +/- 2a)

CA LB SFA1 SFA21 SFA3 SFA4 TI1 Cambridge LONG BEACH MET Station Visitors Center NNWof ISFSI SSE of ISFSI TAYLOR'S ISLAND Start Date Stop Date 1/2/2012 1/9/2012 1/9/2012 1/16/2012 1/16/2012 1/23/2012 1123/2012 1/30/2012 1130/2012 2/6/2012 2/6/2012 2/13/2012 2/13/2012 2/20/2012 2/20/2012 2/27/2012 2/27/2012 3/5/2012 3/5/2012 3/12/2012 3/12/2012 3/19/2012 3/19/2012 3126/2012 3/26/2012 4/2/2012 4/2/2012 4/9/2012 4/9/2012 4/16/2012 4/16/2012 4/23/2012 4/23/2012 4/30/2012 4/30/2012 5/7/2012 5/7/2012 5/14/2012 5/14/2012 5/21/2012 5/21/2012 5/28/2012 5/28/2012 6/4/2012 6/4/2012 6/11/2012 6/11/2012 6/18/2012 6/18/2012 6/2512012 6/25/2012 712/2012 7/2/2012 7/9/2012 7/9/2012 7/16/2012 7/16/2012 7/23/2012 79

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-5 Concentration of Iodine-131 in Filtered Air (Results in units of 10-3 pCi/m3 +/- 2cr)

Start Date Stop Date CA LB SFAl SFA21 SFA3 SFA4 TI1 Cambridge LONG BEACH MET Station Visitors Center NNWof ISFSI SSE of ISFSI TAYLOR'S ISLAND 7/23/2012 7/30/2012 7130/2012 8/612012 8/6/2012 8/13/2012 2*

3 2

8/13/2012 8/20/2012 8/20/2012 8/27/2012 8/27/2012 9/3/2012 9/3/2012 9/10/2012 9/10/2012 9/17/2012 2

9/17/2012 9124/2012 2

9/24/2012 10/1/2012 10/1/2012 10/8/2012 10/8/2012 10/15/2012 10/15/2012 10/22/2012 10/22/2012 10/29/2012 10/29/2012 11/5/2012 11/5/2012 11/12/2012 11/12/2012 11/19/2012 11/19/2012 11/26/2012 11/26/2012 12/3/2012 12/3/2012 12/10/2012 12/10/2012 12/17/2012 12/17/2012 12/24/2012 12/24/2012 12/31/2012 Control Location 2 Power outage 3 Sampler malfunction/low flow

<MDA 80

January 1 - December 31, 2012 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/m3 +/- 2a)

Start Date Stop Date CA Cambridge LB LONG BEACH TI1 TAYLOR'S ISLAND 1/2/2012 1/9/2012 1/16/2012 1/23/2012 1/30/2012 2/6/2012 2/13/2012 2/20/2012 2/27/2012 3/5/2012 3/12/2012 3/19/2012 3/26/2012 4/2/2012 4/9/2012 4/16/2012 4/23/2012 4/30/2012 5/7/2012 5/14/2012 5/21/2012 5/28/2012 6/4/2012 6/11/2012 6/18/2012 6/25/2012 7/2/2012 7/9/2012 7/16/2012 7/23/2012 1/9/2012 1/16/2012 1/23/2012 1/30/2012 2/6/2012 2/13/2012 2/20/2012 2/27/2012 3/5/2012 3/12/2012 3/19/2012 3/26/2012 4/2/2012 4/9/2012 4/16/2012 4/23/2012 4/30/2012 5/7/2012 5/14/2012 5/21/2012 5/28/2012 6/4/2012 6/11/2012 6/18/2012 6/25/2012 7/2/2012 7/9/2012 7/16/2012 7/23/2012 7/30/2012 2.7 +/- 0.2 2.1 +/-0.2 1.8 +/-0.1 2.4 +/- 0.2 2.4 +/- 0.1 1.8 +/- 0.1 2.2 +/- 0.1 2.4 +/- 0.1 2.3 +/- 0.1 2.1 +/-0.1 2.0 +/- 0.1 1.6 +/-0.1 1.4 +/- 0.1 2.0 +/- 0.1 1.9 +/- 0.1 1.6 +/- 0.1 2.2 +/- 0.1 1.4 +/- 0.1 1.9 +/- 0.1 1.1 +/-0.1 1.0 +/- 0.1 2.1 +/-0.3 1.5 +/- 0.1 0.8 +/- 0.1 2.4 +/- 0.1 2.7 +/- 0.1 3.0 +/- 0.2 1.5 +/- 0.1 2.3 +/- 0.1 2.5 +/- 0.1 2.4 +/- 0.2 2.1 +/-0.1 1.8 +/-0.1 2.3 +/- 0.1 2.2 +/-0.1 1.8 +/- 0.1 2.2 +/- 0.1 2.5 +/- 0.1 2.2 +/- 0.1 1.9 +/- 0.1 2.1 +/-0.1 1.3 +/- 0.1 1.2 +/- 0.1 2.0 +/- 0.1 1.8 +/- 0.1 1.4 +/- 0.1 2.1 +/-0.1 1.3 +/- 0.1 2.0 +/- 0.1 1.5 +/- 0.1 1.1 +/-0.1 1.8 +/-0.1 1.5 +/- 0.1 1.1 +/-0.1 2.9 +/- 0.2 2.5 +/- 0.1 3.2 +/- 0.2 1.6 +/- 0.1 2.2 +/- 0.1 1.4+/-0.1 2.5 +/- 0.2 2.1 +/-0.2 1.8 +/- 0.1 2.6+/-0.2 2.3 +/- 0.1 1.8+/-0.1 2.2 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 2.0+/-0.1 2.0 +/- 0.1 1.7 +/- 0.1 1.2 +/- 0.1 1.9 +/- 0.1 1.8 +/- 0.1 1.6 +/- 0.1 1.9+/-0.1 1.5 +/- 0.1 2.0 +/- 0.1 1.1 +/-0.1 1.2 +/- 0.1 1.7 +/- 0.1 1.6 +/- 0.1 1.0 +/- 0.1 2.8 +/- 0.1 2.7 +/- 0.2 3.2 +/- 0.2 1.6 +/-0.1 2.3 +/- 0.1 2.3 +/- 0.1 81

January 1 - December 31, 2012 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/m3 +/- 2o')

Start Date Stop Date CA Cambridge LB LONG BEACH TIO TAYLOR'S ISLAND 7/30/2012 8/6/2012 8/13/2012 8/20/2012 8/27/2012 9/3/2012 9/10/2012 9/17/2012 9/24/2012 10/1/2012 10/8/2012 10/15/2012 10/22/2012 10/29/2012 11/5/2012 11/12/2012 11/19/2012 11/26/2012 8/6/2012 8/13/2012 8/20/2012 8/27/2012 9/3/2012 9/10/2012 9/17/2012 9/24/2012 10/1/2012 10/8/2012 10/15/2012 10/22/2012 10/29/2012 11/5/2012 11/12/2012 11/19/2012 11/26/2012 12/3/2012 12/10/2012 12/17/2012 12/24/2012 12/31/2012 2.1 +/-0.1 1.8 +/- 0.1 2.7 +/- 0.1 1.6 +/- 0.1 2.9 +/- 0.2 2.2 +/- 0.2 1.7 +/-0.1 1.7 +/-0.1 3.0 +/- 0.2 2.5 +/- 0.2 1.8 +/- 0.1 2.6 +/- 0.2 2.8 +1- 0.2 0.8 +/- 0.1 3.7 +/- 0.2 3.4 +/-0.2 4.1 +/-0.2 4.4 +/- 0.2 2.2 +/-0.2 2.9 +/-0.2 3.3 +/- 0.1 1.4 +/- 0.2 2.0 +/- 0.1 1.8 +/- 0.1 2.9 +/- 0.2 1.6 +/- 0.1 2.5 +/- 0.1 2.2 +/- 0.1 1.8 +/- 0.1 1.8 +/-0.1 3.1 +/-0.1 2.3 +/- 0.1 2.2 +/- 0.2 2.1 +/-0.1 3.6 +/- 0.2 0.7 +/- 0.1 2.5 +/- 0.1 2.1 +/-0.1 3.2 +/- 0.2 3.8 +/- 0.2 2.2 +/- 0.1 2.7 +/- 0.2 2.6 +/- 0.1 1.3 +/- 0.2 2.3 +/- 0.1 1.8 +/- 0.1 2.8 +/- 0.1 2.3 +/- 0.1 2.9 +/- 0.2 2.1 +/-0.1 1.8 +/- 0.1 1.8 +/-0.1 3.2 +/- 0.2 2.5 +/- 0.2 2.1 +/-0.1 2.6 +/- 0.2 3.9 +/- 0.2 0.8 +/- 0.1 3.2 +/- 0.2 3.2 +/-0.2 3.6 +/-0.2 4.1 +/-0.2 2.0 +/- 0.1 2.9 +/- 0.2 3.1 +/-0.1 1.4 +/- 0.2 12/3/2012 12/10/2012 12/17/2012 12/24/2012 Control Location 82

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-7 Concentration of Gamma Emitters in Air Particulates (Results in units of 10- pCi/m3 +/- 2co)

Sample Date CA Cambridge LB LONG BEACH TI1 TAYLOR'S ISLAND 1/30/2012 2/27/2012 4/2/2012 4/30/2012 5/28/2012 7/2/2012 7/30/2012 9/3/2012 10/1/2012 10/29/2012 12/3/2012 12/31/2012 Control Location

All Non-Natural Gamma Emitters <MDA 83

9 January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-8 Sample 1/1E 2/2C 3/2(

4/1 E 5/2; 6/1 f 7130 8/21 9/2*

1002' 11/2(

12/3(

Non-Natural Gamma Emitters <M Concentration of Tritium and Gamma Emitters in Taylors Island Well Water (Results in units of 10-3 pCi/L +- 2cr) e Date Gamma Emitters

/2012 0/2012

/12012

/2012

/12012

)/2012 1/2012 5/2012 3/2012 0/2012 nI)4 )

H-3

<281

<276

<292

<295

<310

<315

<310

<317

<317 DIA...J I-IDA 84

9 January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-9 Direct Radiation (Results in units of mR/90 days +/- 2cT)

Site Code Location DR24 DR25 DR26 DR27 DR28 DR29 DR31 DR32 DR33 DR34 OSG1 OSG2 TTLD Missing Rt. 4 and Parran Rd.

Camp Conoy Guard House Rt. 235 and Clark's Landing Road Rt. 231 and Rt. 4 Taylors Is. Siren #35 Taylors Is. Siren #38 Cambridge Twining Property, Taylors Island P. A. Ransome Property Shoreline at Barge Rd.

North of Old Steam Generator Storage Facility West of Old Steam Generator Storaae Facility First Quarter 11.28 +/- 1.35 12.84 +/- 1.38 10.92 +/- 1.45 10.95 +/- 0.87 12.38 +/- 1.07 13.64 +/- 0.41 14.39 +/- 1.02 13.30 +/- 0.93 14.72 +/- 1.43 9.67 +/- 1.16 20.12 +/- 2.31 19.98 +/- 2.74 Second Quarter 11.60 +/- 0.61 12.93 +/- 1.66 10.81 +/- 1.84 11.23+/- 1.14 14.49 +/- 2.15 14.02 +1-1.37 14.36 +/- 0.66 14.30 +/- 1.95 15.28 +/- 1.22 9.61 +1-1.27 23.27 +1-3.61 24.46 +/- 2.92 Third Quarter 11.01 +/- 0.92 12.47 +1- 0.63 10.51 +/- 0.28 1

14.56 +/- 0.99 14.45 +/- 1.46 14.35 +/- 0.55 15.22 +/- 1.37 15.48 +/- 1.20 9.36 +/- 0.26 21.64 +/- 1.23 20.96 +1-4.19 Fourth Quarter 13.75 +/- 1.15 14.83 +/- 1.10 12.81 +1-1.43 13.29 +1-1.37 15.12 +/- 0.82 16.54 +1-2.05 16.86 +/- 0.94 16.91 +1-1.86 11.00 +/- 1.63 22.55 +/- 2.10 20.73 +/- 4.26 85

A January I - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-10 Site Code RPDR05 RPDR06 RPDR07 RPDR08 RPDR09 RPDR10 RPDR11 RPDR12 Location North Fence Lower North Fence Upper West Fence Right West Fence Left South Fence Upper South Fence Lower East Fence Left East Fence Right Direct Radiation from Resin Storage Area (Results in units of mRI90 days +/- 2c)

First Quarter Second Quarter 31.26 +/- 8.58 97.84 +/- 10.72 84.74 +/- 6.25 146.20 +/- 14.62 63.06 +/- 11.76 116.39 +/- 11.73 63.54 +/- 11.24 152.42 +/- 23.71 237.46 +/- 25.24 296.86 +/- 21.21 155.79 +/- 11.83 201.28+/- 24.45 114.56+/- 12.26 124.03+/- 18.41 92.88 +/- 8.95 128.21 +/- 12.45 Third Quarter 153.51 +/- 12.19 98.98 +/- 11.56 91.88 +/- 10.58 208.81 +/- 23.92 129.34 +/- 18.82 129.99 +1-10.32 86.93 +/- 11.76 61.73 +/- 4.88 Fourth Quarter 44.05 +/- 4.12 48.72 +/- 5.28 51.48 +/- 5.64 96.02 +/- 14.15 182.76 +/- 11.78 140.85 +1-10.87 103.61 +/- 12.78 53.22 +/- 2.78 86

January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-1 1 Concentration of Tritium in Groundwater (Results in units of pCi/L +/- 2a)

Sample Date Piezometer Tube #s 11 12 13 15 18 19 20 21 22 01/20/2012 06/19/2012 09/11/2012 ND ND ND ND ND ND 09/24/2012 388+/- 185 ND' ND ND ND 10/1/2012 ND ND ND ND ND ND ND ND 12/2/2012 ND ND 12/5/2012 ND ND ND ND ND ND ND

Tritium Less than Minimum Detectable Activity (<MDA)

ND = No Data - Quarterly sample obtained as required.

Third quarter sample was re-prepared and rerun on 10/1/2012.

87

- p January 1 - December 31, 2012 Docket Nos. 50-317/50-318/72-8 Table E-12 Gross Concentration of Gamma Emitters in Groundwater (Results in units of pCi/L +/- 2a)

Sample Date Piezometer Tube #s 11 12 13 15 18 19 20 21 22 01/20/2012 06/19/2012 09/11/2012 ND ND ND ND ND ND 09/24/2012 ND ND ND 12/2/2012 ND 12/5/2012 ND ND ND ND ND ND ND ND

All Non-Natural Gamma Emitters <MDA ND = No Data - Quarterly sample obtained as required.

88

January I - December 31, 2012 Docket Nos. 50-317/50-318/72-8 FIGURE E-1 Site Map Groundwater Monitoring Wells IWAM - A.-O nA4 671

.IGL 4 Oderoldra1 OJ.Mvrs fbd~d by P.Cval 89

ML13142A148

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