ML12137A874

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Independent Spent Fuel Storage Installation - Annual Radiological Environmental Operating Report
ML12137A874
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 05/15/2012
From: Lauver D
Calvert Cliffs, Constellation Energy Group, EDF Group
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
Download: ML12137A874 (98)
v • d • e


Text

Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 CENGS.

a joint venture of 0

O my Constellation

ýý-eDFe May 15, 2012 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: Document Control Desk

SUBJECT:

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, for the calendar year 2011 (Attachment 1).

Should you have questions regarding this matter, please contact me at (410) 495-5219 or Mr. Larry Liden at (410) 787-5076.

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

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 15, 2012

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, 2011 A. M. Barnett J. S. D'Souza CONSTELLATION ENERGY CONSTELLATION ENERGY NUCLEAR GROUP, LLC May 2012

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS LIST OF FIGU RE S ............................................................................................................................ ii LIST OF TA B L E S ............................................................................................................................. iii I. SU M MA R Y ...................................................................................................................................... 1 II. CALVERT CLIFFS NUCLEAR POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ............................................................ 4 II.A. INTRO DUCTIO N ................................................................................................................................................. 4 II.B. PRO G RA M ............................................................................................................................................................ 4 II.B O bj ectives ........................................................................................................................................................... 4 II.B.2Sam ple C ollection ............................................................................................................................................ 5 II.B.3 Data Interpretation ....................................................................................................................................... 5 II.B.4 Program Exceptions ...................................................................................................................................... 5 II.C. RESULTS A N D DISC USSIO NS ...................................................................................................................... 5 II.C.1 Aquatic Environm ent .................................................................................................................................... 5

.C. Bay W ater ...................................................................................................................................................

B.a 6 II.C.1.b A auatic O rganism s ..................................................................................................................................... 6 I.C..c Shoreline Sedim ent ..................................................................................................................................... 6 I.C.2 Atm ospheric Environm ent ........................................................................................................................... 9 II.C.2.a A ir Particulate Filters ................................................................................................................................ 9 II.C.2.b A ir Iodine .................................................................................................................................................... 9 II.C.3 Terrestrial Environm ent ............................................................................................................................ 11 II.C.3.a V egetation ................................................................................................................................................. 11 II.C.4 Direct Radiation .......................................................................................................................................... 11 II.D. CONCLUSIO N .................................................................................................................................................... 13 III. INDEPENDENT SPENT FUEL STORAGE INSTALLATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ...................................................... 19 III.A. INTRO DUCTIO N .............................................................................................................................................. 19 III.B. PRO G RA M ......................................................................................................................................................... 20 III.B.1 O biectives ................................................................................................................................................... 20 III.B .2 Sam ple Collection ...................................................................................................................................... 20 III.B.3 Data Interpretation .................................................................................................................................... 20 1I .B.4 Program Exceptions .................................................................................................................................. 20 III.C. RESULTS A ND DISCUSSIO N S ...................................................................................................................... 20 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 V egetation ................................................................................................................................................ 21 III.C.2.b Soil..s .......................................................................................................................................................... 22 III.C.3 Direct Radiation ......................................................................................................................................... 22 III.D. CON CLUSIO N .................................................................................................................................................. 23 IV . RE FERE 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 AP PEN D IX C O uality Assurance P rogram .............................................................................. 59 AP PEN D IX D L and U se Survey ................................................................................................. 73 APPENDIX E Additional Samples and Analysis Results ........................................................ 74

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 LIST OF FIGURES Figure Title Page 1 Tritium in Chesapeake Bay W ater ....................................................................................... 7 2 Silver-I 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 Gam m a D ose, ISFSI ........................................................................................ 24 A-i Map of Southern Maryland and Chesapeake Bay Showing Location of Calvert Cliffs N uclear Pow er P lant .......................................................................................................... . . 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 .......................................................................... 91 ii

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 LIST OF TABLES Table Title Page 1 Synopsis of 2011 Calvert Cliffs Nuclear Power Plant Radiological Environmental M onitoring Program .......................................................................................................... . . 17 2 Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Plant U n its I and 2 ........................................................................................................................... 18 3 Synopsis of 2011 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 C alvert 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 A ir ....................................................................... 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 ..... 52 B-9 Concentration of Gamma Emitters in Soil Samples From Locations Around the ISFSI ........ 53 B-10 Typical MDA Ranges for Gamma Spectrometry ............................................................... 54 B- 1I Typical LLDs for Gamma Spectrom etry ........................................................................... 55 B-12 D irect R adiation ....................................................................................................................... 56 C-i Results of Participation in Cross Check Programs ............................................................. 62 C-2 Results of Quality A ssurance Program ............................................................................. 65 C-3 Teledyne Brown Engineering's Typical MDAs for Gamma Spectrometry ....................... 72 D -1 L and U se Survey ...................................................................................................................... 73 E-I Locations of Non-Tech Spec Environmental Sampling Stations for Calvert Cliffs Nuclear P ow er P lan t .............................................................................................................................. 76 E-2 Synopsis of 2011 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environm ental M onitoring Program ................................................................................... 77 E-3 Annual Summary for Calvert Cliffs Nuclear Power Plant Units 1 & 2 Non-Tech Spec Radiological Environmental Monitoring Program ............................................................. 78 E-4 Concentration of Gamma Emitters in Bottom Sediment ................................................... 79 E-5 Concentration of Iodine-131 in Filtered Air ...................................................................... 80 E-6 Concentration of Beta Emitters in Air Particulates ............................................................ 82 iii

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 LIST OF TABLES - Continued Table Title Page E-7 Concentration of Gamma Emitters in Air Particulates ........................................................ 84 E-8 Concentration of Tritium and Gamma Emitters in Taylors Island Well Water ................... 85 E-9 Direct Radiation as Measured in Pressurized Ion Chamber .............................................. 86 E -10 D irect R ad iation ....................................................................................................................... 87 E- 1I Direct Radiation from Resin Storage Area ........................................................................ 88 E-12 Concentration of Tritium in Groundwater........................................................................... 89 E-13 Gross Concentration of Gamma Emitters in Groundwater ................................................. 90 iv

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 I.

SUMMARY

During this operating period for Calvert Cliffs Nuclear Power Plant (CCNPP) Units I and 2, a total of 3414 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) and the Environmental and Independent Spent Fuel Storage Installation (ISFSI) Technical Specifications (Ref. 10). Some of these samples, although not required by either the ODCM or the Technical Specifications, were collected to maintain our commitments to the surrounding community and to maintain historical continuity of the CCNPP Radiological Environmental Monitoring Program (REMP) that started in 1970. The entire monitoring program in place around CCNPP is divided into three parts: the original REMP, the ISFSI monitoring program, and the Non-ODCM Radiological Environmental Monitoring. The following paragraphs describe each of these parts in more detail.

A total of 659 radiochemical analyses were performed on 591 environmental samples and 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, 349 radiochemical analyses were performed on 289 environmental samples, 62 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, 679 analyses were performed on 594 additional environmental samples, and 474 additional TLDs were analyzed for ambient radiation exposure rates. Also, six pressurized ion chambers continuously monitored the environs around the plant for ambient radiation levels resulting in 32 monthly measurements. These additional analyses have shown to be difficult to maintain and unreliable. This sampling pathway was discontinued from the Non Technical Specifications program when the CP-234 Procedure was updated effective September 2011.

And lastly, 199 radiochemical analyses were performed on 199 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.

I

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 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 or silver zeolite molecular sieve cartridges, respectively. The particulate filters were analyzed for beta activity and gamma emitting nuclides. The molecular sieve cartridges were analyzed for airborne gaseous radioiodine.

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.

On March 11, 2011 at 14:46, a magnitude 9.0 earthquake struck off the east coast of Japan. The Fukushima Dai-Ichi Nuclear Power Station, operated by Tokyo Electric Power Co., withstood the earthquake but lost all offsite electrical power sources to the site. Forty-one minutes later however, the plant was hit with a series of tsunamis and all onsite AC power was lost forcing the facility into a state of emergency. The Nuclear Safety Commission of Japan estimated approximately 17 million curies of iodine-131 (1-131) equivalent radioactive material was released into the air and 0.127 million curies into the sea between March 11 and April 5. 1-131 was detected at the CCNPP site from the Fukushima Dai-Ichi Nuclear Power Station event in both the indicator and control air sampling locations from March 21 through April 18.

REMP samples obtained from CCNPP during 2011 identified detectable concentrations of isotopes that could be related to operation of CCNPP. Given the following facts, the detectable concentrations are not a result of CCNPP operation:

I) The quantities of radioactive airborne effluents from CCNPP during 2011 did not increase significantly compared to year 2010.

2) Prior REMP sample results have not detected the presence of these isotopes in air sample monitoring or vegetation.
3) The concentrations being detected in the indicator samples were also identified in the control samples for CCNPP.

As such, the atypical detection of these radionuclides in both indicator and control samples is credibly attributed to the trans-Pacific transport of airborne releases from Dai-Ichi, Fukushima following the March 11, 2011 Tohoku earthquake and is not related to the operations of CCNPP.

Natural radioactivity was detected in essentially all 3414 radiological analyses performed. Low levels of man-made fission products were also observed in 67 of these analyses. All of these observations were attributed to fallout from past atmospheric weapons testing or from the Fukushima Dai-Ichi material released. 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:

2

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8

a. a maximum thyroid dose of 3.32 x 10-2 mrem via liquid and gaseous pathways, which is about 0.043% of the acceptable limit of 75 mremlyr as specified in both 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 1.11 x 10- 3 mrem via liquid and gaseous pathways, which is about 0.044% of the acceptable limit of 25 mrem/yr as specified in both 40CFR190 and 10CFR72.104;
c. a maximum calculated dose to all other organs via liquid and gaseous pathways was equal to 1.92 x 10-3 mrem to the GI Tract. This dose was about 0.008% 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 I and 2 and the ISFSI did not cause any significant radiological impact on the surrounding environment during 2011.

3

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 II. CALVERT CLIFFS NUCLEAR POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM II.A. INTRODUCTION Constellation Energy (CE), 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 Nuclear Regulatory Commission (NRC), as required.

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

The report presents the content of the REMP (Table 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 Analytics Intercomparison 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 I and 2.

II.B. PROGRAM II.B.1 Obiectives 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,
d. To determine whether any statistically significant increase occurs in the con-centration of radionuclides in important pathways.

4

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 II.B.2 Sample Collection The locations of the individual sampling stations are listed in Table A-i 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, 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 There were no program exceptions during this operating period.

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 and are listed in Table A-1.

5

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 I.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 WAI) and the Discharge Area (sample code WA2). Composite samples were obtained from each location for the entire sampling period. These samples were analyzed for tritium and gamma emitters.

The tritium analyses, performed on quarterly composites of the monthly bay water samples, revealed a single positive result of 407 + 190 pCi/L in a sample collected from WA2 on 03/31/2011. This low result is similar to those observed in past operating years.

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.

II.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 IA1 and IA2) and from the Patuxent River (sample codes IA4 and IAS). As shown in Table B-2, two species of fish were sampled at both the plant discharge and the control point in the Patuxent River. Oyster samples were obtained quarterly from Camp Conoy (sample code IA3) and Kenwood Beach (IA6).

Figure 2 compares K-40 and Ag-i 10 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. Oyster samples likewise exhibited naturally occurring K-40, but no detectable concentrations of any plant-related radionuclides.

II.C.I.c Shoreline Sediment Semi-annual shoreline sediment samples were taken from one location during the year. This location is Shoreline at Barge Road (sample code WB 1). The samples obtained from this location were analyzed for gamma emitters.

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

6

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 FIGURE 1 Tritium in Chesapeake Bay Water 1200n o 1000-Ca a, 800-

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January 1 - December 31, 2011 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 or silver zeolite cartridges (for trapping radioiodine species). These samples were collected from five locations surrounding the plant. These locations are On Site Before the Entrance to Camp Conoy (sample code Al), Camp Conoy Road at the Emergency Siren (sample code A2), Bay Breeze Road (sample code A3), Route 765 at Lusby (sample code A4), and at the Emergency Operations Facility (sample code A5).

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 0.4 x 10-2 to 5.0 x 10-2 pCi/m 3 for the indicator locations and 0.8 x 10-2 to 4.6 x 10-2 pCi/m 3 at the control lo-cation. The location with the highest overall mean of 2.2 x 10- 2 pCi/m 3 was A l, Entrance to Camp Conoy.

Gamma spectrometric analyses of monthly composited air particulate samples exhibited no detectable concentrations of any plant-related radionuclides. One March and two April samples did exhibit low level Cs-137 from 1.2x10 3 to 1.7x10 3 pCi/m 3 at the control location, Emergency Operations Facility (sample code EOF) and Entrance to Camp Conoy (Al) attributable to the Fukushima Dai-Ichi releases. Naturally occurring radionuclides, such as Be-7, were detected in nearly all samples.

Figure 3 depicts the historical trends of beta activity in weekly samples since 1975.

II.C.2.b Air Iodine Weekly composited charcoal and silver zeolite 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 and silver zeolite cartridges collected from all five locations exhibited low level concentrations of 1-131 during the weeks of March 21 to April 18 that were attributable to the Fukushima Dai-Ichi material released.

Figure 3 depicts the historical trends of radioiodine in weekly samples since 1974.

9

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 FIGURE 3 Nuclear Fallout in the Calvert Cliffs Area SURFACE AIR VAPORS, LUSBY, MD (A4) 10

January 1 - December 31, 2011 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 IB1, 1B2, and 1B3), On Site Before the Entrance to Camp Conoy (sample codes 1B4, 115, and 1B6), and the Emergency Operations Facility (sample codes 1B7, 1B8, and 199). These samples were analyzed for gamma emitters, including analyses for 1-131.

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

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 DR1), 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 DR 11), Mackall and Bowen Roads (sample code DR12), Wallville (sample code DR13), Rodney Point (sample code DR14),

Mill Bridge and Turner Roads (sample code DRI5), Appeal School (sample code DR16), Cove Point and Little Cove Point Roads (sample code DRI 7), Cove Point (sample code DRI 8), Long Beach (sample code DR19), and On Site Near Shore (sample code DR20). The three control locations are the Emergency Operations Facility (sample code DR2 1), 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 12.43 mR and ranged from 9.34 to 18.71 mR as reported in Table 2. The control locations showed a 90 day mean of 14.00 mR with ranges from 11.18 to 20.13 mR. The location with the highest overall mean of 16.76 was DR23, Taylors Island, which ranged from 15.00 to 20.13 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, 2011 Docket Nos. 50-317/50-318/72-8 FIGURE 4 Mean TLD Gamma Dose, Calvert Cliffs Nuclear Power Plant 12

January 1 -December 31, 2011 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-1 IOin 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 3.15 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 0.042%

of the acceptable limit of 75 mrem/yr as specified in 40CFR190 and 10CFR72.104; A maximum whole body gamma dose of 4.77 x 10-4 mrem to a child at 1.8 km SW of the containments at Calvert Cliffs. This is about 0.002% 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 8.34 x 10-4 mrem to a child at 1.8 km SW of the containments at Calvert Cliffs. This is about 0.003% of the acceptable dose limit of 25 mrem/yr as specified in 40CFR190 and 10CFR72.104; Liquid Pathways A maximum thyroid dose of 8.33 x 10-4 mrem to an adult for all liquid pathways, which is about 0.001 % of the acceptable dose limit of 75 mrem/yr as specified in 40CFR190 and 10CFR72.104; A maximum whole body dose of 1.06 x 10-3 mrem to an adult via all liquid pathways, which is about 0.004% ofthe acceptable dose limit of 25 mrem/yr as stated in 40CFR190 and 10CFR72.104; A maximum dose to any other organ, in this case GI Tract, of 1.49 x 10-3 mR to an adult for all pathways, which is about 0.006 % of the acceptable dose limit of 25 mrem/yr specified in 40CFR190 and 10CFR72.104; 13

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Gaseous and Liquid Pathways Combined A maximum thyroid dose of 3.23 x 10-2 mrem via liquid and gaseous pathways, which is about 0.043% of the acceptable limit of 75 mrem/yr as specified in 40CFRI90 and 10CFR72.104; A maximum whole body dose of 1.11 x 10-3 mrem via liquid and gaseous pathways, which is about 0.004% of the acceptable limit of 25 mrem/yr as specified in 40CFR190 and 10CFR72.104; A maximum calculated dose to all other organs via liquid and gaseous pathways was equal to 1.92 x 10-3 mrem to the GI Tract. This dose was about 0.008 % of the allowable limit of 25 mrem/yr as specified in 40CFRI90 and 10CFR72.104.

In all cases, the calculated doses are a small fraction of the applicable limits specified in 40CFRI90 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 and 40CFR190 and 10CFR72.104, and there was no significant buildup of plant-related radionuclides in the environment due to the operation of the CCNPP.

14

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Figure 5 Atmospheric Dispersion Around CCNPP Average Relative Air Concentrations 15

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Figure 6 Atmospheric Dispersion Around CCNPP Average Relative Ground Deposition 16

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table 1 Synopsis of 2011 Calvert Cliffs Nuclear Power Plant Radiological Environmental Monitoring Program Sample Type Sampling Number of Number Analysis Analysis Number Frequency' Locations Collected Frequency' Analyzed

/

Aquatic Environment Bay Water, Surface MC 2 24 Gamma MC 24 Water H3 QC 8 2

Fish A 4 4 Gamma A 4 Oysters Q 2 8 Gamma Q 8 Shoreline Sediment SA 1 2 Gamma SA 2 Atmospheric Environment 3

Air Iodine W 5 259 1-131 W 259 4

Air Particulates W 5 258 Gross Beta W 258 Gamma MC 60 Direct Radiation Ambient Radiation Q 23 534 TLD Q 534 Terrestrial Environment Vegetation 5 M 3 36 Gamma M 36

' W=weekly, M=monthly, Q=quarterly, SA=semiannual, A=annual, C=composite 2 Once in Season, July through September 3 The collection device contains silver Zeolite or 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, 2011 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 Type and Total Lower Limit of Indicator Location with Highest Annual Control Locations Pathway Sampled Number of Detection (LLD) Locations Mean Highest Annual Mean (F) / Range' Mean (F)/Range (Unit of Analyses (F)/Rangel Mean Measurement) Performed Name/Distance2 &

Direction Aquatic Environment Bay Water, H3 (8) 407(1/8) Discharge Vicinity 407(1/8)

(pCi/L) (407 +190) WA2 (407 +190) 0.3 km N Atmospheric Air Iodinei/m3)I 1-131 (259) 2.0 7.1 (15/207) Entrance to Camp 9.4 (4/51) 8.2 (4/52)

(10-3 PC (2.3-15.0) Conoy Al (3.9-15.0) (2.6-15.3) 0.7 km S Air Particulates Gamma (60) 1.8 1.1 (3/48) EOF 1.7 (1/12) 1.7 (1/12)

(10-3 pCi/m 3) Cs-1 37 (1.0-1.5) 19.3 km (0.8-1.7) ((0.8-1.7))

WNW Air Particulates Gross Beta (258) 0.5 2.1 (206/206) Entrance to Camp 2.2 (50/50) 2.2 (52/52)

(10-2 pCi/m 3) (0.4-5.0) Conoy Al (0.9-5.0) (0.8-4.6) 0.7 km S Direct Radiation Ambient Radiation TLD (534) 12.43 (462/462) Taylors Island 16.76 (24/24) 14.00 (72/72)

(mPR90 days) (9.34-18.71) DR23 (15.00-20.13) (11.18-20.13) 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 From the centerpoint of the ISFSI facility 3 Positive 1-131 results attributable to Fukushima Dai-Ichi March 2011 Releases 18

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 III. INDEPENDENT SPENT FUEL STORAGE INSTALLATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM III.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. Area was also used as a temporary storage area for additional radioactive material.

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.

REMP samples obtained from CCNPP during 2011 identified detectable concentrations of isotopes that could be related to operation of CCNPP. Given the following facts, the detectable concentrations are not a result of CCNPP operation:

1) The quantities of radioactive airborne effluents from CCNPP during 2011 did not increase'significantly compared to year 2010.
2) Prior REMP sample results have not detected the presence of these isotopes in air sample monitoring or vegetation.
3) The concentrations being detected in the indicator samples were also identified in the control samples for CCNPP.

As such, the atypical detection of these radionuclides in both indicator and control samples is credibly attributed to the trans-Pacific transport of airborne releases from Dai-Ichi, Fukushima following the March 11, 2011 Tohoku earthquake and is not related to the operations of CCNPP.

The ISFSI monitoring program is as described in this section of the report. Pressurized Ion Chambers (PICs), because they duplicate direct surveillance by TLDs and because they experience problems with reliability, were excluded from the Technical Specification portion of the ISFSI monitoring program. A Commitment Change Evaluation was performed and effective June 2011, allowed all PIC monitoring references to be removed from CP234 based on this history of unreliability (Ref. 14). PIC results are given in Table E-9 but were phased out of operation ending August 2011.

The results were compared with that generated during the previous ISFSI pre-operational periods (Ref.1 1) and the current and previous CCNPP REMP periods. These comparisons show little deviations from these periods and are very close to the natural background levels for the region with the exception of TLDs around the north end of the ISFSI. More detailed discussions of these results are given in Section III. C.

19

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 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 40CFR190 and 10CFR72.104,
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.

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 no program exceptions during this operating period 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).

20

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 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.1.a Air Particulate Filters Weekly composite air particulate filter samples were collected from five locations during the period. These locations are On Site Before the Entrance to Camp Conoy (sample code 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 0.8 x 10-2 to 6.0 x 10-2 pCi/m 3 for the indicator locations and 1.0 x 10-2 to 4.8 x 10-2 pCi/m 3 for the control location. The location with the highest overall mean of 2.4 x 10-2 pCi/m 3 was SFA3, NNW 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. Low level positive results for Cs-137 were identified at SSE of ISFSI (SFA4) possibly from nearby land disturbance activities. 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 ISFSL.

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). These samples were analyzed for gamma emitters.

REMP samples obtained from CCNPP during 2011 identified detectable concentrations of 1-131 that could be related to operation of CCNPP. Given the following facts, the detectable concentrations are not a result of CCNPP operation:

1) The quantities of radioactive airborne effluents from CCNPP during 2011 did not increase significantly compared to year 2010.

21

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8

2) Prior REMP sample results have not detected the presence of this isotope in air sample monitoring or vegetation.
3) The concentrations being detected in the indicator samples were also identified in the control samples for CCNPP.

As such, the atypical detection of 1-131 in both indicator and control samples is credibly attributed to the trans-Pacific transport of airborne releases from Dai-Ichi, Fukushima following the March 11, 2011 Tohoku earthquake and is not related to the operations of CCNPP.

1-131 was detected in four of 5 quarterly samples collected on 3/22/2011. These values ranged from 80 - 225 pCi/kg for the indicator locations and 7lpCi/kg for the control location.

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 seven quarterly samples from both indicator and control locations. The Cs-137 concentrations ranged from 61 +/- 26 to 224 +/- 43 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, "Environmental Radiation Protection Standards for Nuclear Power Operations" and are comparable to those observed in previous annual reporting periods for the CCNPP REMP and in the earlier pre-operational data for the ISFS1. No other 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 ISFSI. 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 SFDR1O); WNW of ISFSI, (sample code SFDR1 1); WSW of ISFSI, (sample code SFDR12); South of ISFSI, (sample code SFDR13); SE of ISFSI, (sample code SFDRI4); ENE of ISFSI, (sample code SFDRI5); SSW of ISFSI, (sample code SFDR16); NNE of ISFSI, (sample code SFDRI 7) and West of ISFSI, (sample code SFDRI 8). Sampling locations are shown on Figures A-4 and A-5.

22

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 The mean 90 day ambient radiation measured at the ISFSI indicator locations was 27.70 mR and ranged from 10.19 to 57.49 mR as reported in Table 4. The control location showed a 90 day mean of 13.30 mR and ranged from 12.11 to 15.65 mR. The location with the highest overall mean of 48.67 mR with a range of 42.00 to 57.49 mR was SFDR18, 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. However 1-13 1 observed in the March Vegetation samples was attributed to the Fukushima event. No other plant-related radionuclide was 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, 2011 Docket Nos. 50-317/50-318/72-8 FIGURE 7 Mean TLD Gamma Dose, ISFSI 10 9

8 7

6 cc)

-a 5

E 4

3 2

0 0 04 'TD 00 C ("N 00 C-0D

0) 0) IM MC a) 0 0 Calendar Year 24

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table 3 Synopsis of 2011 Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation Radiological Environmental Monitoring Program Sample Type Sampling Number of Number Analysis Analysis Number Frequency1 Locations Collected Frequency1 Analyzed Atmospheric Environment 2

Air Particulates W 5 249 Gross Beta W 249 Gamma MC 60 Direct Radiation Ambient Radiation Q 20 480 TLD 0 480 Terrestrial Environment Vegetation Q 5 20 Gamma Q 20 Soil Q 5 20 Gamma Q 20 1W=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 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table 4 Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation Medium or Type and Total Lower Limit of Indicator Location with Highest Annual Control Locations Pathway Sampled Number of Detection (LLD) Locations Mean Highest Annual Mean (F) / Range 1 Mean (F)/Range (Unit of Analyses (F)/Range1 Mean Measurement) Performed Name/Distance 2 &

Direction Atmospheric Environment Air Particulates Gamma (60) 1.8 1.2 (3/48) SSE of ISFSI 0.2 (2/48) 1.0 (1/12)

(10i 3 pCi/m 3 ) Cs-1 37 (1.5-2.8) SFA4 (1.0-2.8) (1.0) 0.1 km SSE Air Particulates Gross Beta (249) 0.5 2.2 (199/199) NNW of ISFSI 2.4 (49/49) 2.1 (50/50)

(10-2 pCi/m 3) (0.8-6.0) SFA3 (0.8-6.0) (1.0-4.8) 0.1 km NNW Direct Radiation Ambient Radiation TLD (480) 27.70 (456/456) West of ISFSI 48.67 (24/24) 13.30 (24/24)

(mR/90 days) (10.19-57.49) SFDR18 (42.00-57.49) (12.11-15.65) 0.1 kmW Terrestrial Environment Vegetation Gamma ý20) 20 161 (3/16) SSE of ISFSI 225 (1/4) 71 (1/4)

(pCi/kg) 1-131 (80-225) SFB4 225 (71) 0.1 km SSE Soil Gamma (20) 17 147 (7/16) Entrance to Camp 215 (4/4) 71 (3/4)

(pCi/kg) Cs-1 37 (48-233) Conoy SFS5 (189-233) (61-91) 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 centerpoint of the ISFSI facility

' Positive Iodine results attributable to Fukushima Dai-Ichi March Releases 26

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 IV. REFERENCES (1) Cohen, L. K., "Preoperational Environmental Radioactivity Monitoring Program at Calvert Cliffs Units I 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 I 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, Laboratory Services Section.

(9) Constellation Energy, "Land Use Survey Around Calvert Cliffs Nuclear Power Plant, August 2011."

(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).

(14) Commitment Change Form dated June 16, 2011.

27

January 1 - December 31, 2011 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, 2011 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 C alvert C liffs ................................................................................................. 34 Figure Title Page A-I Map of Southern Maryland and Chesapeake Bay Showing Location of Calvert Cliffs Nuclear Pow er P lant .......................................................................................................... . . 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, 2011 Docket Nos. 50-317/50-318/72-8 Table A-1 Locations of Environmental Sampling Stations for the Calvert Cliffs Nuclear Power Plant Distance' Direction 1 Station Description (KM) (Miles) (Sector)

A1 2 On Site Before Entrance to Camp Conoy 0.7 0.4 S A2 Camp Conoy Rd, at emergency siren 2.5 1.6 SSE A3 Bay Breeze Rd 2.6 1.6 SE A4 Route 765, Lusby 2.9 1.8 SSW A5 Emergency Operations Facility 19.3 12.0 WNW DR01 On Site, along Cliffs 0.6 0.4 NW DR02 Route 765, Auto Dump 2.7 1.7 WNW DR03 Route 765, Giovanni's Tavern (Knotty Pine) 2.3 1.4 W DR04 Route 765, across from Vera's Beach Club 2.0 1.2 WSW DR05 Route 765, John's Creek 2.4 1.5 SW DRO6 Route 765, Lusby 2.9 1.8 SSW DR072 On Site before Entrance to Camp Conoy 0.7 0.4 S DR08 Camp Conoy Rd at Emergency Siren 2.5 1.6 SSE DR09 Bay Breeze Rd 2.6 1.6 SE DR10 Calvert Beach Rd and Decatur Street 6.4 4.0 NW DR1 1 Dirt road off Mackall & Parren Rd 6.6 4.1 WNW DR12 Mackall & Bowen Rds *6.7 4.2 W DR13 Mackall Rd, near Wallville 6.1 3.8 WSW DR14 Rodney Point 6.4 4.0 SW DR15 Mill Bridge &Turner Rds 6.2 3.9 SSW DR16 Across from Appeal School 6.5 4.0 S DR17 Cove Point & Little Cove Point Rds 5.9 3.7 SSE DR18 Cove Point 7.1 4.4 SE DR19 Long Beach 4.4 2.7 NW DR20 On site, near shore 0.4 0.2 NNW DR21 Emergency Operations Facility (EOF) 19.3 12.0 WNW DR22 Solomons Island 12.5 7.8 S DR23 Taylors Island, Anderson's Property 12.6 7.8 ENE IA1 Discharge Area 0.3 0.2 N IA10 Hog Island 15.3 9.5 SSE IA2 Discharge Vicinity 0.3 0.2 N IA3 Camp Conoy 0.9 0.6 E IA4 Patuxent River 0.0 0.0 Various IA5 Patuxent river 0.0 0.0 Various IA6 Kenwood Beach 10.7 6.7 NNW IB1 Garden Off Bay Breeze Rd 2.6 1.6 SSE 1B2 Garden Off Bay Breeze Rd 2.6 1.6 SSE 1B3 Garden Off Bay Breeze Rd 2.6 1.6 SSE 1B4 On site, before entrance to Camp Conoy 0.7 0.4 S lB5 On site, before entrance to Camp Conoy 0.7 0.4 S 1B6 On site, before entrance to Camp Conoy 0.7 0.4 S 1B7 Emergency offsite facility 19.3 12.0 WNW 1B8 Emergency offsite facility 19.3 12.0 WNW IB9 Emergency offsite facility 19.3 12.0 WNW WA1 Intake area 0.2 0.1 NNE WA2 Discharge area 0.3 0.2 N WB1 Shoreline at Barge Rd 0.6 0.4 ESE 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, 2011 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, 2011 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, 2011 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, 2011 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 1 Station Description (KM) (Sector)

_____________ ~~Air Particujlate ,______7 AlL On Site Before Entrance to Camp Conoy 0.7 S SFA1 Meteorological Station 0.4 NW SFA2 CCNPP Visitor's Center 0.7 NNE SFA3 NNW of ISFSI 0.1 NNW SFA4 SSE of ISFSF 0.1 SSE DRO7L 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 SFDR10 NW of ISFSI 0.1 NW SFDR1 1 WNW ISFSI 0.1 WNW SFDR12 WSW of ISFSI 0.1 WSW SFDRI3 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 Visitors Center 0.7 NNE SFB3 ISFSI Vegetation NNW of ISFSI 0.1 NNW SFB4 ISFSI vegetation SSE of ISFSI 0.1 SSE SFB5 On Site Before Entrance to Camp Conoy 0.7 ESE

~~~~~ ~~S~oil __ __ _______

SFS1 ISFSI Soil Meteorological Station 0.4 NW SFS2 ISFSI Soil CCNPP Visitors Center 0.7 NNE SFS3 ISFSI Soil NNW of ISFSI 0.1 NNW SFS4 ISFSI Soil SSE of ISFSI 0.1 SSE SFS5 ISFSI Soil On Site Before entrance to Camp Conoy 0.7 ESE Distance and direction from the central point of the ISFSI 2 Common to both the REMP and ISFSI monitoring program 34

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Figure A-4 Independent Spent Fuel Storage Installation Sampling Locations 35

January 1 - December 31, 2011 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, 2011 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, 2011 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS - ANALYTICAL RESULTS Table Title Page B-1 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 A ir ...................................................................... 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 ..... 52 B-9 Concentration of Gamma Emitters in Soil Samples From Locations Around the ISFSI ........ 53 B-10 Typical MDA Ranges for Gamma Spectrometry ............................................................... 54 B-1 I Typical LLDs for Gamma Spectrometry ........................................................................... 55 B -12 D irect R adiation ....................................................................................................................... 56 38

January 1 - December 31, 2011 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 +/- 2o)

Sample Code Sample Date Gamma Emitters H-31 .

WA1 Intake Vicinity 2/2/2011 2/28/2011 3/31/2011 *A <316 5/3/2011 5/31/2011 7/1/2011 <296 8/1/2011 8/31/2011 9/29/2011 <310 11/1/2011 12/1/2011 12/30/2011 <280 WA2 Discharge Vicinity 2/2/2011

  • 2/28/2011
  • 3/31/2011
  • 407 +/- 190 5/3/2011
  • 5/31/2011
  • 7/1/2011 * <296 8/1/2011
  • 8/31/2011
  • 9/29/2011 * <305 11/1/2011
  • 12/1/2011
  • 12/30/2011 * <280 Quarterly composite of monthly samples.
  • All Non-Natural Gamma Emitters less than Minimum Detectable Activity (<MDA) 39

January 1 - December 31, 2011 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) +/- 2a)

Sample Code Sample Date Sample Type Gaimma Emitters IA1 Discharge Area 8/25/2011 Spot IA2 Discharge Area 8/25/2011 Perch IA3 Camp Conoy 9/13/2011 Perch IA41 Patuxent River 8/25/2011 Spot

'Control Location

  • All Non-Natural Gamma Emitters <MDA 40

January 1 - December 31, 2011 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 Gamma Emitters IA3 Camp Conoy 3/15/2011

  • 6/24/2011
  • 8/25/2011
  • 10/13/2011
  • lA6 1 Kenwood Beach 3/15/2011
  • 6/24/2011
  • 8/25/2011
  • 10/13/2011
  • Control Location
  • All Non-Natural Gamma Emitters <MDA 41

January 1 - December 31, 2011 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) +/- 2c)

Sample Code Sample Date Gamma Emitters WB1 3/30/2011

  • Shoreline at Barge Rd 7/6/2011 *
  • All Non-Natural Gamma Emitters <MDA 42

January 1 - December 31, 2011 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 1 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 1/3/2011 1/10/2011 1/10/2011 1/17/2011 1/17/2011 1/24/2011 *k 1/24/2011 1/31/2011 1/31/2011 2/7/2011 2/7/2011 2/14/2011 2/14/2011 2/21/2011 2/21/2011 2/28/2011 2/28/2011 3/7/2011 3/7/2011 3/14/2011 3/14/2011 3/21/2011 3.9 +/- 0.5 3.8+/- 1.5 1.9 +/- 1.1 2.6 +/- 0.4 3/21/2011 3/28/2011 15.0 +/- 2.3 9.3 +/- 4.2 9.3 +/- 1.5 7.3 +/- 1.3 15.3 +/- 1.9 3/28/2011 4/4/2011 14.5 +/- 0.8 7.6 +/- 3.3 6.7 +/- 1.2 9.7 +/- 3.4 12.3 +/- 2.0 4/4/2011 4/11/2011 4.3 +/- 2.1 2.3 +/- 0.9 4.6+/-2.0 4.7 +/- 2.5 3.5 +/- 2.7 4/1.1/2011 4/18/2011 3.5 4/18/2011 4/25/2011 4/25/2011 5/2/2011 5/2/2011 5/9/2011

  • t 5/9/2011 5/16/2011 5/16/2011 5/23/2011 5/23/2011 5/30/2011 5/30/2011 6/6/2011 6/6/2011 6/13/2011 6/13/2011 6/20/2011 6/20/2011 6/27/2011 6/27/2011 7/4/2011 7/4/2011 7/11/2011 7/11/2011 7/18/2011 7/18/2011 7/25/2011 7/25/2011 8/1/2011
  • 8/1/2011 8/8/2011 8/8/2011 8/15/2011 8/15/2011 8/22/2011 8/22/2011 8/29/2011

' Control Location 43

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B Continued 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 1 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 8/29/2011 9/5/2011

  • 2 9/5/2011 9/12/2011 ND
  • 9/12/2011 9/19/2011
  • 9/19/2011 9/26/2011 9/26/2011 10/3/2011 10/3/2011 10/10/2011 *
  • 10/10/2011 10/17/2011 10/17/2011 10/24/2011 10/24/2011 10/31/2011 10/31/2011 11/7/2011
  • 11/7/2011 11/14/2011 *
  • 11/14/2011 11/21/2011
  • 11/21/2011 11/28/2011 11/28/2011 12/5/2011 *
  • 12/5/2011 12/12/2011
  • 12/12/2011 12/19/2011 *
  • 12/19/2011 '12/26/2011 *
  • 12/26/2011 1/2/2012 *
  • Control Location 2 Power outage
  • All Non-Natural Gamma Emitters <MDA ND=No Data 44

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B-6 Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2cy)

Start Date Stop Date Al A2 A3 A4 A51 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 1/3/2011 1/10/2011 3.5+/-0.2 3.6+/-0.3 2.9+/-0.3 3.6+/-0.2 3.3+/-0.2 1/10/2011 1/17/2011 1.9+/-0.1 1.7+/-0.2 1.7+/-0.2 1.0+/-0.2 1.9+/-0.1 1/17/2011 1/24/2011 3.0+/-0.2 2.9+/-0.3 2.7+/-0.4 2.6+/-0.3 2.8+/-0.2 1/24/2011 1/31/2011 2.6+/-0.1 2.4+/-0.3 4.0+/-0.4 3.0+/-0.3 2.3+/-0.1 1/31/2011 2/7/2011 2.0+/-0.1 1.7+/-0.3 1.6+/-0.3 1.3 +/- 0.2 1.8+/-0.1 2/7/2011 2/14/2011 2.2+/-0.1 2.3+/-0.3 2.4+/-0.3 2.0+/-0.2 2.0+/-0.1 2/14/2011 2/21/2011 1.8+/-0.1 1.7+/-0.3 2.4+/-0.3 1.9+/-0.2 1.8+/-0.1 2/21/2011 2/28/2011 1.8+/-0.1 1.5+/-0.2 2.0+/-0.2 1.6+/-0.2 1.8+/-0.1 2/28/2011 3/7/2011 1.3 +/-0.1 1.7 +/-0.3 1.5 +/-0.3 1.4 +/-0.2 1.6 +/-0.1 3/7/2011 3/14/2011 1.7+/-0.1 1.7+/-0.3 2.0+/-0.3 1.5+/-0.2 1.7+/-0.1 3/14/2011 3/21/2011 2.2 +/-0.1 1.7+/-0.3 2.7 +/-0.3 2.1 +/-0.2 2.2+/-0.1 3/21/2011 3/28/2011 5.0 +/- 0.2 4.3 +/- 0.4 4.5 +/- 0.4 4.6 +/- 0.3 4.6 +/- 0.2 3/28/2011 4/4/2011 2.8+/-0.2 1.8+/-0.2 1.5+/-0.2 1.8+/-0.3 2.5+/-0.2 4/4/2011 4/11/2011 2.2+/-0.2 1.6+/-0.2 1.3+/-0.2 2.5+/-0.3 2.0+/-0.2 4/11/2011 4/18/2011 1.6+/-0.1 1.0+/-0.2 2.3+/-0.2 1.8+/-0.3 1.6+/-0.1 4/18/2011 4/25/2011 1.7+/-0.1 1.3 +/-0.2 1.6+/-0.2 1.6+/-0.2 2.1 +/-0.1 4/25/2011 5/2/2011 0.9+/-0.1 0.7+/-0.2 0.7+/-0.2 1.0+/-0.3 0.9+/-0.1 5/2/2011 5/9/2011 1.7+/-0.1 1.2+/-0.2 1.2+/-0.2 1.5+/-0.2 1".9+/-0.1 5/9/2011 5/16/2011 0.9+/-0.1 0.8+/-0.2 0.9+/-0.2 1.1 +/-0.2 1.1 +/-0.1 5/16/2011 5/23/2011 1.3 +/-0.1 1.2+/-0.2 1.1 +/-0.2 1.7+/-0.3 1.4+/-0.1 5/23/2011 5/30/2011 2.4+/-0.1 1.6+/-0.2 1.9+/-0.2 3.0+/-0.3 2.4+/-0.1 5/30/2011 6/6/2011 2.2+/-0.2 1.9+/-0.3 2.0+/-0.3 2.4+/-0.3 2.4+/-0.2 6/6/2011 6/13/2011 2.9 +/-0.2 2.5 +/-0.3 2.5 +/-0.2 2.6 +/-0.3 3.1 +/-0.2 6/13/2011 6/20/2011 1.7 +/-0.1 1.8+/-0.1 1.2+/-0.2 1.2 +/-0.3 1.8+/-0.1 6/20/2011 6/27/2011 1.5 +/-0.1 1.6+/-0.1 1.5+/-0.2 1.3+/-0.2 1.7+/-0.1 6/27/2011 7/4/2011 1.9 +/-0.1 1.8+/-0.1 1.6+/-0.2 1.3+/-0.2 2.2 +/-0.1 7/4/2011 7/11/2011 2.2+/-0.1 2.3+/-0.1 2.1 +/-0.2 1.9+/-0.3 2.8+/-0.2 7/11/2011 7/18/2011 1.4+/-0.1 1.5+/-0.1 1.4+/-0.2 1.8+/-0.3 1.7+/-0.1 7/18/201.1 7/25/2011 3.0 +/-0.2 2.9 +/-0.2 1.7 +/-0.2 2.4 +/-0.3 3.6 +/-0.2 7/25/2011 8/1/2011 2.5+/-0.1 2.5+/-0.1 1.7+/-0.2 2.3+/-0.2 2.9+/-0.1

'Control Location 45

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2(y)

Start Date Stop Date Al A2 A3 A4 A5 1 Entrance to Camp Bay Breeze Route 765 EOF Camp Conoy Rd at Lusby Conoy Siren 8/1/2011 8/8/2011 2.3 +/- 0.1 2.1 +/-0.1 0.9 +/- 0.2 1.3 +/- 0.3 0.8 +/- 0.1 8/8/2011 8/15/2011 1.9 +/- 0.1 2.0 +/- 0.1 1.1 +/-0.2 1.3 +/-0.3 2.1 +/- 0.1 8/15/2011 8/22/2011 1.8 +/-0.1 2

1.8 +/-0.1 1.0 +/- 0.2 2.6 +/- 0.3 2.1 +/-0.1 8/22/2011 8/29/2011 ND 1.7 +/-0.2 2.5 +/- 0.4 1.4 +/-0.3 1.5 +/- 0.1 8/29/2011 9/5/2011 2.4 +/- 0.1 1.9 +/- 0.1 1.7 +/- 0.3 1.6 +/- 0.2 2.2 +/- 0.1 9/5/2011 9/12/2011 ND 3 1.6 +/- 0.1 0.8 +/- 0.2 1.2 +/- 0.3 1.7 +/- 0.2 9/12/2011 9/19/2011 2.6 +/- 0.2 2.2 +/- 0.2 1.0 +/- 0.3 1.6 +/-0.3 2.3 +/- 0.2 9/19/2011 9/26/2011 0.9 +/- 0.1 0.8 +/- 0.1 0.4+/- 0.2 0.7 +/- 0.2 0.9 +/- 0.1 9/26/2011 10/3/2011 1.5 +/-0.1 1.2 +/-0.1 1.2 +/- 0.2 1.4+/-0.2 1.3 +/- 0.1 10/3/2011 10/10/2011 2.8 +/- 0.2 2.3 +/- 0.2 2.3 +/- 0.2 2.5 +/- 0.2 2.6 +/- 0.2 10/10/2011 10/17/2011 3.8 +/- 0.2 3.2 +/- 0.2 3.2 +/- 0.2 3.8 +/- 0.2 3.0 +/- 0.2 10/17/2011 10/24/2011 2.7 +/- 0.1 2.1 +/-0.1 2.3 +/- 0.1 2.5 +/- 0.1 2.3 +/- 0.1 10/24/2011 10/31/2011 2.6 +/- 0.2 2.5 +/- 0.2 2.5 +/- 0.2 2.8 +/- 0.2 2.5 +/- 0.2 10/31/2011 11/7/2011 1.9 +/-0.1 1.9 +/- 0.1 1.7 +/- 0.1 2.0 +/- 0.1 2.0 +/- 0.1 11/7/2011 11/14/2011 2.8 +/- 0.2 2.6 +/- 0.1 2.3 +/- 0.1 3.0 +/- 0.2 2.8 +/- 0.2 11/14/2011 11/21/2011 2.5 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 2.4 +/- 0.1 2.2 +/- 0.1 11/21/2011 11/28/2011 2.3 +/- 0.1 2.2 +/- 0.1 2.2 +/- 0.1 2.5 +/- 0.1 2.2 +/- 0.1 11/28/2011 12/5/2011 1.5 +/-0.1 1.5 +/-0.1 1.5 +/- 0.1 1.7 +/-0.1 1.7 +/-0.1 12/5/2011 12/12/2011 2.2 +/- 0.1 2.0 +/- 0.1 2.0 +/- 0.1 2.1 +/- 0.1 2.0 +/- 0.1 12/12/2011 12/19/2011 4.5 +/- 0.2 4.0 +/- 0.2 3.9 +/- 0.2 4.5 +/- 0.2 4.4 +/- 0.2 12/19/2011 12/26/2011 2.4 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 2.5 +/- 0.1 2.3 +/- 0.1 12/26/2011 1/2/2012 2.2 +/- 0.1 2.2 +/- 0.1 2.2 +/- 0.1 2.4 +/- 0.1 2.2 +/- 0.1 Control Location 2 Lost Sample due to Hurricane Irene 3 Power outage ND = No Data 46

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2y)

Start Date Stop Date SFA1 SFA2 1 SFA3 SFA4 MET Station Visitors NNW of ISFSI SSE of ISFSI Center 1/3/2011 1/10/2011 3.8 +/- 0.2 3.4 +/- 0.2 3.9 +/- 0.3 3.5 +/- 0.3 1/10/2011 1/17/2011 2.0 +/- 0.1 1.9 +/-0.1 1.4 +/-0.2 1.7 +/- 0.2 1/17/2011 1/24/2011 3.3 +/- 0.2 3.2 +/- 0.2 2.9 +/- 0.3 2.7 +/- 0.3 1/24/2011 1/31/2011 2.8 +/- 0.1 2.4 +/- 0.2 2.8 +/- 0.3 2.7 +/- 0.3 1/31/2011 2/7/2011 2.0 +/- 0.1 1.8 +/- 0.1 2.0 +/- 0.2 1.4 +/- 0.2 2/7/2011 2/14/2011 2.3 +/- 0.1 2.1 +/-0.1 2.3 +/- 0.2 2.3 +/- 0.2 2/14/2011 2/21/2011 2.0 +/- 0.1 1.8 +/- 0.1 1.6 +/- 0.2 1.6 +/- 0.2 2/21/2011 2/28/2011 1.9 +/- 0.1 1.7 +/-0.1 1.8 +/- 0.2 1.7 +/- 0.2 2/28/2011 3/7/2011 1.4 +/- 0.1 1.4 +/-0.1 1.6 +/-0.2 1.5 +/- 0.1 3/7/2011 3/14/2011 1.7 +/-0.1 2

1.7 +/-0.1 1.8 +/- 0.2 1.7 +/- 0.1 3/14/2011 3/21/2011 ND2 2.2 +/- 0.1 2.6 +/- 0.2 2.4 +/- 0.1 3/21/2011 3/28/2011 ND 4.8 +/- 0.2 4.7 +/- 0.3 4.1 +/-0.2 3/28/2011 4/4/2011 2.6 +/- 0.1 2.3 +/- 0.2 2.4 +/- 0.2 2.1 +/-0.1 4/4/2011 4/11/2011 1.8 +/- 0.2 2.0 +/- 0.2 2.3 +/- 0.3 1.9 +/- 0.1 4/11/2011 4/18/2011 1.7 +/- 0.1 1.4 +/- 0.1 1.5+/-0.2 3

1.7 +/- 0.1 4/18/2011 4/25/2011 2.2 +/- 0.1 1.9 +/- 0.1 ND 1.8 +/-0.1 4/25/2011 5/2/2011 0.9 +/- 0.1 1.0 +/- 0.1 1.2 +/- 0.3 1.0 +/- 0.1 5/2/2011 5/9/2011 1.9 +/- 0.1 1.8 +/- 0.1 2.0 +/- 0.3 1.6 +/- 0.1 5/9/2011 5/16/2011 1.1 +/-0.1 1.0 +/- 0.1 1.0 +/- 0.3 0.9 +/- 0.1 5/16/2011 5/23/2011 1.5 +/- 0.1 1.4 +/- 0.1 2.3 +/- 0.4 1.2 +/- 0.1 5/23/2011 5/30/2011 2.6 +/- 0.1 2.1 +/-0.1 4.3 +/- 0.4 2.3 +/- 0.1 5/30/2011 6/6/2011 2.4 +/- 0.2 ND2 3.8 +/- 0.5 2.3 +/- 0.2 6/6/2011 6/13/2011 3.3 +/- 0.2 3.0 +/- 0.2 6.0 +/-30.5 3.0 +/- 0.2 6/13/2011 6/20/2011 1.9 +/- 0.1 1.6 +/- 0.1 ND 1.8 +/- 0.1 6/20/2011 6/27/2011 1.6 +/- 0.1 1.6 +/- 0.1 1.6 +/-0.1 1.6 +/- 0.1 6/27/2011 7/4/2011 2.1 +/- 0.1 2.0 +/- 0.1 2.0 +/- 0.1 2.0 +/- 0.1 7/4/2011 7/11/2011 2.8 +/- 0.2 2.4 +/- 0.2 2.5 +/- 0.2 2.3 +/- 0.1 7/11/2011 7/18/2011 1.6 +/- 0.1 1.5 +/-0.1 1.7 +/-0.1 1.6 +/- 0.1 7/18/2011 7/25/2011 3.7 +/- 0.2 3.0 +/- 0.2 3.3 +/- 0.2 3.1 +/- 0.2 7/25/2011 8/1/2011 3.0 +/- 0.1 2.6 +/- 0.1 2.8 +/- 0.1 2.6 +/- 0.1 1 Control Location 2 Power outage 3 Sampler malfunction/low flow ND = No Data 47

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2y)

Start Date Stop Date SFA1 SFA2' SFA3 SFA4 MET Station Visitors NNW of ISFSI SSE ,of ISFSI Center 8/1/2011 8/8/2011 2.5 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 8/8/2011 8/15/2011 2.2 +/- 0.1 1.9 +/-0.1 2.1 +/-0.1 1.8+/-0.1 8/15/2011 8/22/2011 2.1 +/-0.1 1.8 +/-0.1 2.0 +/- 0.1 1.9 +/- 0.1 8/22/2011 8/29/2011 1.5 +/- 0.1 1.4 +/-0.2 1.7+/-0.1 1.0 +/- 0.1 8/29/2011 9/5/2011 2.3 +/-20.1 2.0 +/-20.2 1.0 +/-0.1 2.0 +/- 0.1 2

9/5/2011 9/12/2011 ND 2 ND ND 2.5 +/- 0.3 9/12/2011 9/19/2011 ND 2.1 +/- 0.2 2.3 +/- 0.2 2.3 +/- 0.2 9/19/2011 9/26/2011 0.9 +/- 0.1 1.0 +/- 0.1 0.8 +/- 0.1 0.8 +/- 0.1 9/26/2011 10/3/2011 1.5 +/- 0.1 1.5 +/-0.1 1.4 +/- 0.1 1.3 +/- 0.1 10/3/2011 10/10/2011 3.6 +/- 0.2 2.4 +/- 0.2 2.7 +/- 0.2 2.5 +/- 0.2 10/10/2011 10/17/2011 3.8 +/- 0.2 3.0 +/- 0.2 3.2 +/- 0.2 2.9 +/- 0.2 10/17/2011 10/24/2011 2.4 +/- 0.1 2.4 +/- 0.1 2.5 +/- 0.1 2.4 +/- 0.1 10/24/2011 10/31/2011 2.6 +/- 0.2 2.7 +/- 0.2 2.3 +/- 0.2 2.5 +/- 0.2 10/31/2011 11/7/2011 1.8 +/-0.1 1.7 +/-0.1 1.7+/-0.1 1.9 +/- 0.1 11/7/2011 11/14/2011 2.8 +/- 0.2 2.9 +/- 0.2 2.6 +/- 0.2 2.7 +/- 0.2 11/14/2011 11/21/2011 2.4 +/- 0.1 2.4 +/- 0.1 2.3 +/- 0.1 2.4 +/- 0.1 11/21/2011 11/28/2011 2.4 +/- 0.1 2.4 +/- 0.1 2.3 +/- 0.1 2.3 +/- 0.1 11/28/2011 12/5/20 11 1.6 +/-0.1 1.5 +/-0.1 1.4 +/-0.1 1.6 +/- 0.1 12/5/2011 12/12/20 11 2.1 +/-0.1 1.9 +/-0.1 2.0 +/- 0.1 2.0 +/- 0.1 12/12/2011 12/19/20 11 4.2 +/- 0.2 4.6 +/- 0.2 4.3 +/- 0.2 4.2 +/- 0.2 12/19/2011 12/26/20 11 2.4 +/- 0.1 2.2 +/- 0.1 2.5 +/- 0.1 2.3 +/- 0.1 12/26/2011 1/2/20 12 2.2 +/- 0.1 2.2 +/- 0.1 2.1 +/-0.1 2.2 +/- 0.1 Control Location 2 Power outage 3 Sampler malfunction/low flow ND=No Data 48

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B-7 Concentration of Gamma Emitters in Air Particulates (Results in units of 10- 3 pCi/m 3 +/- 2a)

Sample Date Al A2 A3 A4 A5 1 Entrance to Camp Conoy Bay Breeze Route 765 at EOF Camp Conoy Siren Rd Lusby

  • t 'k 1/31/2011 3/1/2011 3/29/2011 1.7+0.72

./¢ 5/2/2011 1.5 + 0.7 2 "k 1.2 + 0.62 5/30/2011 Y¢ 6/27/2011 8/1/2011 8/29/2011 */

10/3/2011 10/31/2011 11/28/2011

'A" 1/2/2012 Sample Date SFA1 SFA2 1 SFA3 SFA4 MET Station Visitors Center NNW of ISFSI SSE of ISFSI 1/31/2011 ....

3/1/2011 * *

  • 2.8+1.6 3 3/29/2011 ....

5/2/2011 ....

5/30/2011 ....

6/27/2011 ....

8/1/2011 ....

8/29/2011 ....

10/3/2011 ....

10/31/2011 ....

11/28/2011 ....

1/2/2012 ....

Control Location 2 Positive Result for Cs 137 directly attributable to Fukushima Dai-Ichi releases 3 Positive Result for Cs-137 was possibly from nearby land disturbance activities.

  • All Non-Natural Gamma Emitters <MDA 49

January 1 - December 31, 2011 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 6/27/2011 Squash Bay Breeze Rd 7/25/2011 Eggplant Leaves 8/30/2011 Greens 9/27/2011 Green Peppers 1B2 6/27/2011 Eggplant Leaves Bay Breeze Rd 7/25/2011 Squash

  • A 8/30/2011 Green Peppers 9/27/2011 Eggplant Leaves
  • 1B3 6/27/2011 Cabbage
  • Bay Breeze Rd 7/25/2011 Cabbage
  • 8/30/2011 Cabbage 9/27/2011 Cabbage IB4 6/27/2011 Squash 'k Camp Conoy 7/25/2011 Eggplant Leaves Entrance 8/30/2011 Mint ft 9/27/2011 Green Peppers
  • lB5 6/27/2011 Eggplant Leaves
  • Camp Conoy 7/25/2011 Squash
  • Entrance 8/30/2011 Greens
  • 9/27/2011 Eggplant Leaves 1B6 6/27/2011 Cabbage *t Camp Conoy 7/25/2011 Mint
  • /

Entrance 8/30/2011 Green Peppers 9/27/2011 Mint 50

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B-8a - Continued Concentration of Gamma Emitters in Vegetation Samples (Results in units of pCi/kg (wet) +/- 2a)

Sample Code Sample Date Sample Type Gamma Emitters IB71 6/27/2011 Squash EOF 7/25/2011 Eggplant Leaves 8/30/2011 Mint "k 9/27/2011 Cabbage IB81 6/27/2011 Eggplant Leaves EOF 7/25/2011 Okra 8/30/2011 Eggplant Leaves 9/27/2011 Eggplant Leaves 1891 6/27/2011 Cabbage EOF 8/30/2011 Cabbage 7/25/2011 Cabbage 9/27/2011 Mint Control Location

  • All Non-Natural Gamma Emitters <MDA 51

January 1 - December 31, 2011 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) +/- 2a)

Sample Code Sample Date Gamma Emitters 1-131 2 SFB1 MET Station 3/22/2011 6/13/2011 9/19/2011 11/21/2011 *k SFB2 1 Visitor's Center 3/22/2011 71 +/-42 6/13/2011 9/19/2011 11/21/2011 SFB3 NNW of ISFSI 3/22/2011 *t 180 +/- 33 6/13/2011

"*

9/19/2011 11/21/2011

"*

SFB4 SSE of ISFSI 3/22/2011 225 +/- 133 6/13/2011 9/19/2011 11/21/2011 SFB5 On Site Before Entrance to Camp Conoy 3/22/2011 *k 80+/-44 6/13/2011 9/19/2011 11/21/2011

' Control Location 2 Positive results directly attributable to Fukushima Dai-Ichi releases

  • All Non-Natural Gamma Emitters <MDA 52

January 1 - December 3 1, 2011 Docket Nos. 50-317/50-318/72-8 Table B-9 Concentration of Gamma Emitters in Soil Samples From Locations Around the ISFSI (Results in units of pCi/kg (dry) +/- 2cr Sample Code Sample Date Cs-1 37 Gamma Emitters SFS1 MET station 3/22/2011 6/13/2011 9/19/2011 11/21/2011 SFS2 1 Visitors Center 3/22/2011 6/13/2011 61 +/- 28 9/19/2011 61 +/- 26 11/21/2011 91 +/- 30 SFS3 NNW of ISFSI 3/22/2011 6/13/2011 69 +/- 31 9/19/2011 48 +/- 23 11/21/2011 56 +/- 30 SFS4 SSE of ISFSI 3/22/2011 6/13/2011 9/19/2011 11/21/2011 SFS5 Entrance to Camp Conoy 3/22/2011 233 +/- 31 6/13/2011 213 +/- 45 9/19/2011 224+/-43 11/21/2011 189 +/- 47

'Control Location

  1. This isotope <MIDA
  • All Non-Natural Gamma Emitters <MDA 53

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B-10 Typical MDA Ranges for Gamma Spectrometry Bay Water, Air Wate Ground Shoreline Selected Particulates Water, Fish Water Milk (pCi/L) (Oysters Sediment Soil Vegetation Nuclides (1031 pCi/m3) Drinking (pCi/Kg)Wet (pCi/L) (pCi/kg)Wet (pCi/kg)Dry (pCi/kg)Dry (pCi/Kg)Wet Water (pCi/L)

Na-22 0-0 2.9-6.9 18.8-46.8 3.8-9.7 5-9.1 5.7-36.3 12.1 -49.6 26.7-79 0.9-40 K-40 0-0 31.1 -68.3 170.9-340 40.8-82.2 41.6-74.4 87.1 -325 130-438.2 346-770 13-323 Cr-51 0-0.1 21.7-44.2 133-351 25.5-52.7 27.6-49.6 38.2-219 97.2-377 200-594 15-363 Mn-54 0-0 2.6-5.9 16.3-32.1 3.5-7.5 3.7-6.9 5.6-29.2 11.3-38.5 23-66.2 0.4-32.8 Co-58 0-0 2.6-6 20-38.1 3.3-7.6 3.7-6.8 5.1 -28.6 11.8-41.5 24.3-70.6 0-70.3 Fe-59 0-0 5.7-13.4 55-110 7-16.5 9.2-16.8 15.8-63.4 28.1 -116 56.3-170 21-363 Co-60 0-0 2.7-6.7 19.7-39.6 3.5-8.3 4.5-8.4 5.8-34.2 12.2-44.2 24.6-72.2 0.6-37.5 Zn-65 0-0 5.8-13.5 43-94.1 9-18.6 9.7-17.9 14-71.5 36.4-120 62.7-191 1.2-82.5 Nb-95 0-0 2.8-6.3 19.6-50.4 3.6-8.3 3.9-7 5.8-30 14.3-56.4 28.6-90.3 8.9-69 Zr-95 0-0 4.6-10.5 29.2-66.9 5.8-13.7 6.4-12 8.6-49.1 21.1 -75.5 42.7-128 16-131 Ru-106 0-0 22-51 114-264 27.9-64.9 29-58.3 35-232 87.1 -299 182-530 0-277 Ag-110m 0-0 2.5-5.5 13.6-30.4 3.2-7 3.3-6.5 4.4-26.8 9.4-35.1 24.6-72.9 0-30.9 1-131

  • 0-1.1 0-6 0-470.3 3.2-9.4 0.1 -1.4 0-80.2 0-326 63.4-248 9.0-57 Cs-134 0-0 2.5-5.6 13.9-26.6 3.2-7.6 3.1 -6.4 11.1 -34.1 22.5-42.5 40.2-70.3 0.6-31.4 Cs-137 0-0 2.5-5.9 13.9-30.7 3.5-7.9 3.4-7.1 12.9-36.1 21.4-43.5 35.9-68.6 0.6-32.4 Ba-140 0-0.1 5.2-10.7 33-198 5.4-11.6 5.3-9.9 6.1 -67.3 13.5-216 70.9-238 14-120 La-140 0-0.1 5.0-10.7 33-198 5"4 - 11.6 5.3-9.9 6.1 -67.3 13.4-216 70.9-238 14-120 Ce-144 0-0 13.4-28.5 50.4-115 17.9-37.4 17.5-32.9 19.1 -108 41.8-139 84.5-244 0-132 3

This MDA range for 1-131 on a silver zeolite or charcoal cartridge is typically 4.16xl0- to 3.40x10-2 54

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B-11 Typical LLDs for Gamma Spectrometry Air Bay Water, Selected Particulates Surface Water, Fish pCi/kg Ground water Oysters pCi/kg Precipitation Soil pCi/kg Vegetation Nuclides 10-3 pCi/m3 Drinking Water (wet) pCi/L (wet) pCi/L (dry) pCi/kg (dry) 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 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 silver zeolite or charcoal cartridge is 2.0xl 0 3 pCi/m 3 55

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B-12 Direct Radiation (Results in Units of mR/90 days +/- 2a)

Site Code Locatic *n First Quarter Second Quarter Third Quarter Fourth Quarter DR01 On Sit e, along Cliffs ND1 15.86 +/- 1.70 13.15 +/- 3.05 13.55 +/- 1.32 DR02 Route 765, Auto Dump 9.34 +/- 1.01 13.03 +/- 0.79 13.28 +/- 0.81 11.27 +/- 1.23 3

DR03 Route 765, Giovanni's 10.56 +/- 0.68 13.17 +/- 1.64 ND 11.49 +/- 1.04 Tavern DR04 Route 765, across from 11.93 +/- 1.30 15.30 +/- 2.18 15.19 +/- 1.79 12.76 +/- 1.29 Vera's Beach Club DR05 Route 765, John's 12.04 +/- 1.49 14.94 +/- 0.70 14.35 +/- 1.21 13.05 +/- 1.33 Creek DR06 Route 765 at Lusby 10.02 +/- 0.93 12.84 +/- 1.10 12.25 +/- 0.21 11.03 +/- 0.81 DR07 Entran ce to Camp 10.19 +/- 0.19 12.98 +/- 1.41 12.96 +/- 1.71 11.24+/- 0.81 Conoy Conoy Rd at DR08 Camp 14.85 +/- 1.60 18.71 +/- 1.42 17.82 +/- 1.73 15.45 +/- 1.56 Emerg.ency Siren DR09 Bay Breeze Rd 11.47+/- 0.48 13.68+/- 1.01 12.64 +/- 3.88 11.58+/- 1.51 3

DR10 Calved Beach Rd and 10.69+/- 0.64 12.75 +/- 1.13 ND 11.11 +/- 0.66 Decatuir Street DR11 Dirt row3d off Mackall & 11.16 +/- 0.79 13.38 +/- 2.07 11.45 +/- 1.64 12.05 +/- 0.56 Parren Rd DR12 MackalII& Bowen Rds 10.31 +/- 1.32 13.18 +/- 0.49 11.23 +/- 1.25 11.46 +/- 0.59 TLD missing 2 Control Location 3 TLD missing after Hurricane Irene ND = No Data 56

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table B Continued Direct Radiation (Results in Units of mR/90 days +/- 2y)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter DR13 Mackall Rd, near Wallville 11.78 +/- 1.43 14.51 +/- 0.74 12.32 +/- 0.98 12.71 +/- 0.94 DR14 Rodney Point 13.04 +/- 1.17 16.57 +/- 1.05 13.64 +/- 1.07 14.28 +I- 0.83 DR1 5 Mill Bridge & Turner Rds 11.85 +/- 1.63 14.12 +/- 0.64 12.27 +/- 1.32 12.17 +/- 0.79 DR16 Across from Appeal 10.55 +/- 0.62 13.50 +/- 1.54 10.65 +/- 1.37 11.17+/- 1.26 School DR17. Cove Point & Little Cove 11.98 +/- 1.32 15.33 +/- 1.63 12.77 +/- 0.72 13.34 +/- 1.46 Point Rds DR1 8 Cove Point 10.50 +/- 0.96 12.06 +/- 0.75 9.78 +/- 0.76 10.42 +/- 0.61 DR1 9 Long Beach 10.76 +/- 0.84 13.60 +/- 1.35 10.84 +/- 0.59 11.48 +/- 1.04 DR20 On site, near shore 13.17 +/- 1.28 16.27 +/- 2.27 13.74 +/- 1.19 13.95 +/- 1.39 DR2 12 EOF 12.38 +/- 0.88 14.90 +/- 1.08 12.29 +/- 0.99 13.03 +/- 1.57 2

DR22 Solomons Island 11.18 +/- 1.03 13.66 +/- 0.95 11.37 +/- 0.88 12.12 +/- 1.16 2

DR23 Taylors Island 15.00 +/- 0.23 20.13 +/- 2.01 16.26 +/- 0.21 15.64 +/- 1.08 DR30 MET Station 11.99 +/- 0.41 14.54 +/- 1.29 11.97 +/- 2.46 12.36 +/- 1.41 SFDR01 SW of ISFSI 16.76 +/- 2.72 20.99 +/- 2.29 17.01 +/- 0.78 18.37 +/- 2.69 SFDR02 NNW of ISFSI 19.49 +/- 1.22 23.10 +/- 1.72 20.62 +/- 3.44 20.50 +/- 3.31 SFDR03 North of ISFSI 35.79 +/- 3.89 43.62 +/- 10.09 36.89 +/- 7.18 38.62 +/- 5.87 1 TLD missing 2 Control Location 57

January 1 - December 3 1, 2011 Docket Nos. 50-317/50-318/72-8 Table B Continued Direct Radiation (Results in Units of mR/90 days +/- 2a)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter SFDR04 NE of ISFSI 30.40 +/- 3.67 41.02 +/- 6.86 32.89 +/- 6.45 33.51 +/- 4.88 SFDR05 East of ISFSI 17.36 +/- 2.81 24.17 +/- 3.72 19.90 +/- 1.55 20.06 +/- 4.18 SFDR06 ESE of ISFSI 16.12 +/- 0.75 20.63 +/- 2.02 15.57 +/- 1.36 17.10 +/- 2.07 2

SFDR07 Visitor's Center 12.93+/- 1.52 15.65 +/- 2.40 12.11 +/- 0.76 12.52 +/- 1.01 SFDR08 NNW of ISFSI 27.20 +/- 5.82 34.63 +/- 4.64 28.19 +/- 4.19 28.77 +/- 6.90 SFDR09 SSE of ISFSI 14.38 +/- 0.65 17.78 +/- 1.85 15.42 +/- 1.54 16.10 +/- 2.21 SFDR1O NW of ISFSI 32.05 +/- 10.61 40.97 +/- 8.64 34.31 +/- 8.41 34.96 +/- 7.13 SFDR11 WNW ISFSI 29.74 +/- 4.62 36.47 +/- 9.49 29.64 +/- 5.65 34.09 +/- 4.94 SFDR12 WSW of ISFSI 42.90 +/- 9.75 49.23 +/- 9.24 44.18 +/- 5.79 45.34 +/- 8.42 SFDR13 South of ISFSI 22.72 +/- 4.28 30.77 +/- 4.57 22.35 +/- 5.49 21.75 +/- 4.22 SFDR14 SE of ISFSI 16.07 +/- 2.97 21.01 +/- 3.64 17.39 +/- 3.94 .18.46+/- 1.55 SFDR15 ENE of ISFSI 21.87 +/- 2.51 24.54 +/- 5.67 22.69 +/- 3.45 22.90 +/- 4.43 SFDR16 SSW of ISFSI 34.53 +/- 3.50 42.07 +/- 6.23 36.35 +/- 5.11 37.44 +/- 5.36 SFDR17 NNE of ISFSI 38.78 +/- 4.42 48.27 +/- 10.88 34.53 +/- 4.65 41.00 +/- 7.31 SFDR18 West of ISFSI 42.00 +/- 5.16 57.49 +/- 9.07 47.67 +/- 9.37 47.51 +/- 7.15 1TLD missing 2 Control Location 58

January 1 - December 31, 2011 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 intercomparison 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 Laboratories' results contained in Table C-I generally agree with the intercomparison laboratory results within the range of +/-2 a 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 1 . The uncertainties for the Constellation Energy Laboratory's results and Analytics' results are +/-2a while the ERA laboratory's uncertainty is based on USEPA guidelines 2 .

All the Constellation Energy Laboratories' results contained in Table C-1 generally agree with the intercomparison laboratory results within the range of +/-2 a of each other with the exception of a beta result for the water sample type on 6/16/11 from Analytics. Investigation into the matter yielded no apparent cause for this discrepancy. A new calibration standard was used to calibrate the instrument prior to analyzing this sample. Results for samples run prior to and after this calibration were in agreement within +/-2 a. Repeat analysis of the sample in question yielded results consistent with the initial reported value. All other intercomparisons for beta filters and water samples analyzed on the instrument, prior to and after this sample, were in full agreement. One feasible explanation for this anomalous result is an error in sample preparation.

The error could occur either when it was initially prepared at Analytics or later when it was being prepared for counting in the Laboratory. The more probable of the two possibilities is the former one, since there would more likely be a dilution error than concentration error made by Laboratory in the latter instance. A dilution error would lead to lower, not higher, result for the Laboratory, which is not the case for this analysis and thus, would tend to preclude the latter possibility.

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 Criteria 1 . The uncertainties for the Constellation Energy Laboratories' results and Analytics' results are +/-2o while the ERA laboratory's uncertainty is based on USEPA guidelines 2 .

NRC Inspection Manual, Inspection Procedure 84750, March 15, 1994 2National Standards for Water Proficiency Testing Studies Criteria Document, December 1998 59

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 All the results contained in Table C-2 agree within the range of +/-2 c 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 six samples involving Cs-137 and 1-131 results in: a soil sample collected at SFS2 on 3/22/11, two vegetation samples collected at SFb2 and SFb3 on 03/22/11, a cabbage sample collected at 1B9 on 07/25/11, and two soil samples collected at SFS2 and SFS3 on 9/19/11. In all cases, low levels of Cs-137 or 1-131 were observed in one or more of the results of the comparison set and not observed in all three.

These minor discrepancies, occurring very close to or below the analyses MDA's, are most likely due to counting statistical fluctuations, the non-homogeneous nature of the sample-splitting process, and, in the case of 1-131, a short decay time.

Weekly air iodine samples were collected at A4 and A5 on 4/11/11 and found to contain low levels of 1-131. This is consistent with the results from other sites in the REMP program during this timeframe and with similar results from other observers around the country. The results are attributable to the March Fukushima releases. Unfortunately, the low levels and short decay time of 1-131 observed in these samples precluded them from being split with an outside laboratory. Replicate analyses of these samples yielded results comparable to the initial analyses within range of +/-2 a.

Other samples listed in Table C-2, whose nature generally precludes sample splitting, are marked

"**" in the Split Analysis column.

60

January 1 - December 31, 2011 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 ............................................................. 62 C-2 Results of Q uality A ssurance Program ................................................................................ 65 C-3 Teledyne Brown Engineering's Typical MDAs for Gamma Spectrometry ...................... 72 61

January 1 - December 31, 2011 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 03/17/11 Air Iodine- pCi 1-131 115.0 +/- 6.0 96.9+/-1.6 03/17/11 Milk - pCi/L Fe-59 164.0 +/- 2720 175.0 +/- 2.9 106.0 +/- 17.0 Co-58 113.0 +/- 1.9 Co-60 157.0 +/- 14.0 172.0 +/-2.9 Zn-65 264.0 +/- 39.0 261.0 +/- 4.4 Cs-1 34 104.0 +/- 11.0 130.0 +/- 2.2 Cs-1 37 214.0 +/- 20.0 205.0 +/- 3.4 Cr-51 263.0 +/- 104.0 298.0 +/- 5.0 Mn-54 254.0 +/- 22.0 266.0 +/-4.5 1-131 98.0 +/- 31.0 96.9 +/- 1.6 03/17/11 Water- pCi/L Gross Beta 199.0 +/- 3.0 205.0 +/- 3.4 04/04/11 Water- pCi/L Ba-1 33 69.7 +/- 5.0 75.3 Cs-137 73.3 +/- 6.0 77.0 Co-60 87.0 +/- 5.0 88.0 Zn-65 108.0 +/- 14.0 98.9 Cs-1 34 63.5 +/- 4.0 72.9 06/16/11 Air particulates on filter- pCi Cr-51 162.0 +/- 30.0 142.0 +/- 2.4 Ce-141 68.0 +/- 5.0 55.2 +/- 0.9 Cs-1 37 116.0 +/- 9.0 95.3 +/- 1.6 Cs-1 34 116.0 +/- 6.0 131.0 +/- 2.2 Zn-65 213.0 +/- 19.0 180.0 +/- 3.0 Co-60 157.0 +/- 8.0 134.0 +/- 2.2 Co-58 122.0 +/- 8.0 105.0 +/- 1.8 Fe-59 99.0 +/- 10.0 85.2 +/- 1.4 Mn-54 104.0 +/- 8.0 95.2 +/- 1.6 06/16/11 Water - pCi/L H-3 34.3 37.2 62

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table C Continued Results of Participation in Cross Check Programs Sample Type a Reported Cross Check Lab Sample Date Units nd Isotope Observed Laboratory's Units ResultsResults 06/16/11 Water - pCi/L Co-58 184.0 +/- 17.0 177.0 +/- 3.0 Zn-65 344.0 +/- 30.0 305.0 +/- 5.1 Co-60 243.0 +/- 10.0 228.0 +/- 3.8 Cs-1 34 205.0 +/- 7.0 222.0 +/- 3.7 Cs-1 37 179.0 +/- 12.0 161.0 +/- 2.7 Fe-59 162.0 +/- 28.0 144.0 +/- 2.4 Mn-54 168.0 +1-14.0 161.0 +/- 2.7 Ce-141 77.0 +/- 28.0 93.5 +/- 1.6 1

06/16/11 Water -pCi/L Gross Beta( ) 171.0 +/- 3.0 123.0 +/- 2.1 07/05/11 Water - pCi/L 1-131 23.0 +/- 5.6 26.0 07/05/11 Water -pCi/L Gross Beta 44.1 +/-2.3 63.4 09/15/11 Filter -pCi Gross Beta 59.8 +/- 1.6 54.6 +/- 0.9 09/19/11 Particulate Filter Cs-137 533.0 +/- 11.8 486.0 pCi Co-60 596.0 +/- 15.0 524.0 Zn-65 601.0 +/- 34.0 464.0 Cs-1 34 416.0 +/- 11.0 429.0 10/07/11 Water - pCi/L 1-131 28.0 +/- 11.0 27.5 12/08/11 Charcoal - pCi 1-131 85.0 +/- 7.0 89.5 +/- 1.5 63

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table C Continued Results of Participation in Cross Check Programs Sample Type and Reported Cross Check Lab Sample Date Units Isotope Observed Laboratory's Results Results

( See Appendix C Discussion 12/08/11 Particulates filter Cr-51 354.0 4/- 43.0 339.0 +/- 5.7 pCi Cs-1 37 131.0 +/- 9.0 126.0 +/- 2.1 Cs-1 34 90.0 +/- 5.0 103.0 +/- 1.7 Zn-65 193.0 +/- 17.0 174.0 +1-2.9 Co-58 134.0 +/- 9.0 132.0 +/- 2.2 Fe-59 124.0 +/- 11.0 110.0 +/- 1.8 Mn-54 149.0 +/- 10.0 144.0 +/- 2.4 Co-60 169.0 +/- 8.0 162.0 +/- 2.7 12/08/11 Water - pCi/L H-3 25.1 25.2 12/08/11 Milk - pCi/L Cs-1 34 148.0 +/- 7.0 171.0 +/- 2.9 1-131 97.0 +/- 20.0 90.2 +/- 1.5 Zn-65 288.0 +/- 26.0 291.0 +/- 4.9 Co-60 255.0 +/- 11.0 270.0 +/- 4.5 Cr-51 523.0+/- 80.0 566.0 +/- 9.5 Fe-59 175.0 +/- 16.0 183.0 +/- 3.1 Mn-54 232.0 +/- 15.0 241.0 +/- 4.0 Cs-1 37 203.0 +/- 13.0 210.0 +/- 3.5 Co-58 194.0 +/- 14.0 221.0 +/- 3.7 12/08/11 Water -pCi/L Gross Beta 292.0 +/- 3.0 281.0 +/- 4.7 m

c See Appendix C Discussion 64

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table C-2 Results of Quality Assurance Program Sample Type Type of Original Replicate Sample Date Split Analysis and Location 2 Analysis Analysis Analysis Air Iodine - Al 01/17/11 1-131 Air Iodine - A2 01/17/11 1-131 Air Filter - Al 01/24/11 Gross Beta 3.2 +/- 0.2 3.4 +/- 0.2 Air Filter - A2 01/24/11 Gross Beta 2.9 +/- 0.3 2.9 +/- 0.3 **

Air Filter - A3 01/24/11 Gross Beta 2.7 +/- 0.4 2.9 +/- 0.4 Air Filter- A4 01/24/11 Gross Beta 2.6 +/- 0.3 2.8 +/- 0.3 **

Air Filter - A5 01/24/11 Gross Beta 2.9 +/- 0.2 3.1 +/-0.2 **

Air Filter -

SFA1 01/24/11 Gross Beta 3.6 +/- 0.2 3.5 +/- 0.2 Air Filter -

SFA2 01/24/11 Gross Beta 3.2 +/- 0.2 3.2 +/- 0.2 **

Air Filter -

SFA3 01/24/11 Gross Beta 2.9 +/- 0.3 2.8 +/- 0.3 **

Air Filter -

SFA4 01/24/11 Gross Beta 2.6 +/- 0.3 2.4 +/- 0.3 Air Filter - Al 02/07/11 Gross Beta 2.1 +/- 0.1 2.1 +/-0.1 **

Air Filter - A2 02/07/11 Gross Beta 1.6 +/-0.3 1.6 +/-0.2 Air Filter - A3 02/07/11 Gross Beta 1.6 +/-0.3 1.8 +/- 0.3 Air Filter - A4 02/07/11 Gross Beta 1.3 +/-0.2 1.5 +/-0.2 Air Filter - A5 02/07/11 Gross Beta 1.8 +/-0.1 1.9 +/- 0.1 Air Filter -

SFA1 02/07/11 Gross Beta 2.3 +/- 0.1 2.2 +/- 0.1 Air Filter -

SFA2 02/07/11 Gross Beta 1.8 +/- 0.1 1.8 +/- 0.1 **

Air Filter -

SFA3 02/07/11 Gross Beta 2.0 +/- 0.2 1.9 +/- 0.2 **

Air Filter -

SFA4 02/07/11 Gross Beta 1.4 +/- 0.2 1.5 +/- 0.2

Air Iodine - A4 02/14/11 1-131 Air Iodine - A5 02/14/11 1-131 Air Iodine - CA 03/14/11 1-131 Air Iodine - LB 03/14/11 1-131 65

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table C Continued Results of Quality Assurance Program Sample Type Type of Original Replicate Sample Date Split Analysis and Location 2 Analysis Analysis Analysis Oysters - IA3 03/15/11 Gamma Oysters - IA6 03/15/11 Gamma Misc ground coverage - SFB2 03/22/11 1-131 (1) 71.5 +/-41.7 Misc ground coverage - SFB3 03/22/11 1i131(1) 180.1 +/-33.0 173.6 +/- 32.8 Soil - SFS2 03/22/11 Cs-1 37 59.0 +/- 29.1 78.6 +/- 57.6 Soil - SFS3 03/22/11 Cs-1 37 37.2 +/- 26.9 62.3 +/- 30.2 81.4 +/- 57.2 Shoreline Sediment - WB1 03/30/11 Gamma Bay Water - WA2 03/31/11 Gamma Air Iodine - A4 04/11/11 1-131 (1) 0.47 +/- 0.25 0.31 +/-0.1 Air Iodine - A5 04/11/11 1-131 (1) 0.34 +/- 0.27 0.38 +/- 0.1 Air Filter - Al 04/11/11 Gross Beta 2.4 +/- 0.2 2.5 +/- 0.2 Air Filter - A2 04/11/11 Gross Beta 1.6 +/- 0.2 1.7 +/- 0.2 Air Filter - A3 04/11/11 Gross Beta 1.4+/-0.2 1.8 +/- 0.2 Air Filter - A4 04/11/11 Gross Beta 2.5 +/- 0.3 2.7 +/- 0.3 Air Filter - A5 04/11/11 Gross Beta 2.0 +/- 0.2 2.1 +/- 0.2 Air Filter - SFA1 04/11/11 Gross Beta 2.0 +/- 0.2 2.3 +/- 0.2 Air Filter - SFA2 04/11/11 Gross Beta 2.0 +/- 0.2 2.1 +/-0.2 Air Filter - SFA3 04/11/11 Gross Beta 2.3 +/- 0.3 2.3 +/- 0.3 Air Filter - SFA4 04/11/11 Gross Beta 1.9 +/-0.1 2.0 +/- 0.1 Air Iodine - A3 05/16/11 1-131 Air Iodine - A4 05/16/11 1-131 Air Filter - Al 05/16/11 Gross Beta 1.0 +/-0.1 1.0 +/-0.1 Air Filter - A2 05/16/11 Gross Beta 0.8 +/- 0.2 0.8 +/- 0.2 Air Filter - A3 05/16/11 Gross Beta 0.9 +/- 0.2 0.8 +/- 0.2 Air Filter - A4 05/16/11 Gross Beta 1.2 +/-0.2 1.1 +/-0.2 Air Filter - A5 05/16/11 Gross Beta 1.1 +/-0.1 1.2 +/-0.1 Air Filter - SFA1 05/16/11 Gross Beta 1.2 +/-0.1 1.1 +/-0.1 Air Filter - SFA2 05/16/11 Gross Beta 1.0 +/- 0.1 0.9 +/- 0.1 66

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table C Continued Results of Quality Assurance Program Sample Type Sample Date Type of Original Replicate Split Analysis and Location Analysis Analysis Analysis Air Filter - SFA3 05/16/11 Gross Beta 1.0 +/- 0.3 0.8 +/- 0.3 Air Filter - SFA4 05/16/11 Gross Beta 0.9 +/- 0.1 0.9 +/- 0.1 Air Filter - Al 05/30/11 Gamma Air Filter - A2 05/30/11 Gamma Air Filter - A3 05/30/11 Gamma It Air Filter - A4 05/30/11 Gamma It Air Filter - A5 05/30/11 Gamma It Air Filter - SFA1 05/30/11 Gamma It Air Filter - SFA2 05/30/11 Gamma It Air Filter - SFA3 05/30/11 Gamma It Air Filter - SFA4 05/30/11 Gamma Air Filter - Al 06/06/11 Gross Beta 2.4 +/- 0.2 2.5 +/- 0.2

Air Filter - A2 06/06/11 Gross Beta 1.9 +/-0.3 2.0 +/- 0.3 Air Filter - A3 06/06/11 Gross Beta 2.1 +/- 0.3 2.1 +/- 0.3 Air Filter - A4 06/06/11 Gross Beta 2.4 +/- 0.3 2.3 +/- 0.3

Air Filter - A5 06/06/11 Gross Beta 2.5 +/- 0.2 2.4 +/- 0.2 Air Filter - SFA1 06/06/11 Gross Beta 2.7 +/- 0.2 3.0 +/- 0.2

Air Filter - SFA2 06/06/11 Gross Beta 2.5 +/- 0.6 2.7 +/- 0.6

Air Filter - SFA3 06/06/11 Gross Beta 3.8 +/- 0.5 4.2 +/- 0.5 Air Filter - SFA4 06/06/11 Gross Beta 2.3 +/- 0.2 2.4 +/- 0.2 Soil - SFS3 06/13/11 Cs-1 37 69.2 +/- 30.5 78.2 +/- 29.0 160.0 +/- 86.5 Soil - SFS5 06/13/11 Cs-1 37 212.7 +/- 44.6 240.3 +/- 39.3 333.0 +/- 84.2 Air Iodine - A2 06/20/11 1-131 Air Iodine - A3 06/20/11 1-131 Oysters - IA3 06/22/11 Gamma

  1. t Oysters - IA6 06/22/11 Gamma Eggplant- 1B2 06/27/11 Gamma Cabbage- IB3 06/27/11 Gamma 67

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table C Continued Results of Quality Assurance Program Sample Type Type of Original Replicate Sample Date Split Analysis and Location 2 Analysis Analysis Analysis Eggplant- IB5 06/27/11 Gamma Cabbage- 1B6 06/27/11 Gamma Squash -IB7 06/27/11 Gamma Eggplant- 1B9 06/27/11 Gamma Air Filter - Al 07/04/11 Gross Beta 2.0 +/- 0.1 2.0 +/- 0.1 Air Filter - A2 07/04/11 Gross Beta 1.9 +/- 0.1 1.8 +/- 0.1 Air Filter - A3 07/04/11 Gross Beta 1.6 +/-0.2 1.7 +/- 0.2 Air Filter - A4 07/04/11 Gross Beta 1.3 +/-0.2 1.5 +/- 0.2 Air Filter - A5 07/04/11 Gross Beta 2.2 +/- 0.1 2.2 +/- 0.1 Air Filter - SFA1 07/04/11 Gross Beta 2.4 +/- 0.1 2.4 +/- 0.1 Air Filter - SFA2 07/04/11 Gross Beta 2.0 +/- 0.1 1.8 +/- 0.1 Air Filter - SFA3 07/04/11 Gross Beta 2.0 +/- 0.1 2.2 +/- 0.1 Air Filter - SFA4 07/04/11 Gross Beta 2.0 +/- 0.1 2.0 +/- 0.1 DR05 07/06/11 TLD 16.6 +/- 0.8 17.4 +/- 1.8 DR06 07/06/11 TLD 14.3 +/- 1.2 15.2 +/- 1.3 DR07 07/06/11 TLD 14.4 +/- 1.6 15.4 +/- 1.3 DR08 07/06/11 TLD 20.8 +/- 1.6 20.9 +/- 2.8 DR09 07/06/11 TLD 15.2 +/- 1.1 16.9 +/- 0.9 DR10 07/06/11 TLD 14.9 +/- 2.3 15.5 +/- 1.1 DR11 07/06/11 TLD 14.9 +/- 2.3 16.3 +/- 0.7 DR29 07/06/11 TLD 21.2 +/-3.4 20.7 +/- 1.2 DR31 07/06/11 TLD 22.7 +/- 3.9 23.3 +/- 4.6 SFDR14 07/06/11 TLD 23.2 +/- 4.3 25.1 +/-6.3 SFDR15 07/06/11 TLD 26.1 +/- 5.3 30.6 +/- 5.6 Shoreline Sediment - WB1 07/06/11 Gamma Cabbage -IB3 07/25/11 Gamma Cabbage - IB9 07/25/11 Cs-1 37(11 12.2 +/- 7.7 68

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table C Continued Results of Quality Assurance Program Sample Type Sample Date Type of Original Replicate Split Analysis and Location Analysis Analysis Analysis Bay Water - WA2 08/01/11 Gamma Spot - IA4 08/25/11 Gamma Air Iodine - A2 08/29/11 1-131 # **

Air Iodine - A5 08/29/11 1-131 # **

Air Filter - A2 08/29/11 Gross Beta 1.7 +/- 0.2 1.6 +/- 0.1 **

Air Filter - A3 08/29/11 Gross Beta 2.6 +/- 0.4 2.6 +/- 0.4 **

Air Filter - A4 08/29/11 Gross Beta 1.4 +/- 0.3 1.7 +/- 0.3 **

Air Filter - A5 08/29/11 Gross Beta 1.8 +/- 0.1 1.8 +/- 0.1 **

Air Filter - SFA1 08/29/11 Gross Beta 1.7 +/- 0.1 1.5 +/- 0.1 **

Air Filter - SFA2 08/29/11 Gross Beta 1.4 +/- 0.2 1.4 +/- 0.2 **

Air Filter - SFA3 08/29/11 Gross Beta 1.7 +/- 0.1 1.7 +/- 0.1 **

Air Filter - SFA4 08/29/11 Gross Beta 1.0 +/- 0.1 1.1 +/- 0.1 **

Peppers- 1B6 08/30/11 Gamma # # #

Mint- 1B7 .08/30/11 Gamma # #

Bay Water - WA2 08/31/11 Gamma Misc ground coverage - SFB2 09/19/11 Gamma Misc ground coverage - SFB3 09/19/11 Gamma Soil - SFS2 09/19/11 Cs-1 37 60.5 +/- 25.6 ** 91.9 +/- 43.2 Soil - SFS3 09/19/11 Cs-137 47.6 +/-23.5 ....

DR05 09/27/11 TLD 13.5 +/- 1.2 13.6 +/- 1.2 **

DR06 09/27/11 TLD 11.7+/-0.9 12.5+/-0.8 **

DR07 09/27/11 TLD 12.2+/-1.6 12.5+/-0.8 **

DR08 09/27/11 TLD 16.8+/-1.6 17.3+/-1.2 **

DR09 09/27/11 TLD 13.0+/-1.6 13.5+/-1.1 **

DR11 09/27/11 TLD 13.1 +/-1.6 13.0+/-0.6 **

69

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table C Continued Results of Quality Assurance Program Sample Type Type of Original Replicate Sample Date Split Analysis and Location 2 Analysis Analysis Analysis DR29 09/27/11 TLD 16.4 +/- 1.3 17.6 +/- 1.8

DR31 09/27/11 TLD 18.5 +/- 2.3 18.5 +/- 1.9 SFDR14 09/27/11 TLD 19.1 +/-2.9 21.0+/-3.3 SFDR15 09/27/11 TLD 24.9 +/- 3.0 25.8 +/- 5.9 a

Air Iodine - Al 10/03/11 1-131 #

Air Iodine - A2 10/03/11 1-131 Air Filter - Al 10/03/11 Gross Beta 1.7 +/-0.1 1.6 +/-0.1 Air Filter - A2 10/03/11 Gross Beta 1.2 +/- 0.1 1.4 +/-0.1 Air Filter - A3 10/03/11 Gross Beta 1.2 +/- 0.2 1.3 +/- 0.2 Air Filter - A4 10/03/11 Gross Beta 1.4 +/-0.2 1.6 +/- 0.2 Air Filter - AS 10/03/11 Gross Beta 1.3 +/-0.1 1.3 +/-0.1 Air Filter - SFA1 10/03/11 Gross Beta 1.6 +/- 0.1 1.6 +/- 0.1 Air Filter - SFA2 10/03/11 Gross Beta 1.5 +/- 0.1 1.6 +/-0.1 Air Filter - SFA3 10/03/11 Gross Beta 1.3 +/-0.1 1.5 +/- 0.1 Air Filter - SFA4 10/03/11 Gross Beta 1.3 +/-0.1 1.5 +/- 0.1 Air Iodine - A4 10/10/11 1-131 #

Air Iodine - AS 10/10/11 1-131 Air Filter - Al 10/10/11 Gross Beta 3.0 +/- 0.2 3.0 +/- 0.2 Air Filter - A2 10/10/11 Gross Beta 2.3 +/- 0.2 2.5 +/- 0.2 Air Filter - A3 10/10/11 Gross Beta 2.3 +/- 0.2 2.5 +/- 0.2 Air Filter - A4 10/10/11 Gross Beta 2.5 +/- 0.2 2.7 +/- 0.2 Air Filter - A5 10/10/11 Gross Beta 2.6 +/- 0.2 2.7 +/- 0.2 Air Filter - SFA1 10/10/11 Gross Beta 4.0 +/- 0.2 4.1 +/-0.2 Air Filter - SFA2 10/10/11 Gross Beta 2.4 +/- 0.2 2.6 +/- 0.2 Air Filter - SFA3 10/10/11 Gross Beta 2.7 +/- 0.2 2.6 +/- 0.2 Air Filter - SFA4 10/10/11 Gross Beta 2.5 +/- 0.2 2.6 +/- 0.2 U

Oysters - IA3 10/13/11 Gamma Air Filter - Al 11/07/11 Gross Beta 1.9+/-0.1 1.8 +/-0.1 70

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table C Continued Results of Quality Assurance Program Sample Type Type of Original Replicate Split Analysis Sample Date Analysis Analysis Analysis and Location 2 Air Filter - A2 11/07/11 Gross Beta 1.9 +/-0.1 1.8 +/- 0.1 Air Filter - A3 11/07/11 Gross Beta 1.7 +/-0.1 1.8 +/- 0.1 Air Filter - A4 11/07/11 Gross Beta 2.0 +/- 0.1 2.0 +/- 0.1 Air Filter - A5 11/07/11 Gross Beta 2.0 +/- 0.1 2.0 +/- 0.1 Air Filter - SFA1 11/07/11 Gross Beta 1.8 +/- 0.1 2.0 +/- 0.1 Air Filter - SFA2 11/07/11 Gross Beta 1.7+/-0.1 1.7 +/- 0.1 Air Filter - SFA3 11/07/11 Gross Beta 1.7 +/-0.1 1.7 +/- 0.1 Air Filter - SFA4 11/07/11 Gross Beta 1.9 +/-0.1 1.9 +/- 0.1 Air Iodine - Al 11/14/11 1-131 Air Iodine - A5 11/14/11 1-131 Air Iodine - Al 12/05/11 1-131 Air Iodine - A3 12/05/11 1-131

Air Filter - Al 12/05/11 Gross Beta. 1.5 +/- 0.1 1.7 +/-0.1 Air Filter - A2 12/05/11 Gross Beta 1.5 +/- 0.1 1.6 +/-0.1 **

Air Filter - A3 12/05/11 Gross Beta 1.5 +/- 0.1 1.6 +/-0.1

Air Filter - A4 12/05/11 Gross Beta 1.7 +/-0.1 1.8 +/-0.1 Air Filter - A5 12/05/11 Gross Beta 1.7 +/- 0.1 1.8 +/-0.1 Air Filter - SFA1 12/05/11 Gross Beta 1.6+/-0.1 1.6 +/-0.1 Air Filter - SFA2 12/05/11 Gross Beta 1.5 +/-0.1 1.6 +/- 0.1 Air Filter - SFA3 12/05/11 Gross Beta 1.4 +/- 0.1 1.4 +/- 0.1 Air Filter - SFA4 12/05/11 Gross Beta 1.6 +/-0.1 1.7 +/- 0.1 See discussion at the beginning of the Appendix 2 3 2 Results reported for Air samples 1-131 and Beta are in 10- pCi/m . 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

    • The nature of these samples precluded splitting them with an independent laboratory.
  1. All Non natural Gamma Emitters are <MDA 71

January 1 - December 31, 2011 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 Particulates3 Nuclides pCi/I pCi/kg pCi/kg pCi/kg pCi/kg 10"3 pCi/m H-3 175 -- -- -- -- --

Na-22 1 8 3 12 6 5 Cr-51 12 105 4 104 50 63 Mn-54 1 9 3 12 5 4 Co-58 1 9 4 9 4 5 Fe-59 3 28 9 24 10 12 Co-60 1 9 4 12 5 6 Zn-65 2 20 8 25 10 9 Nb-95 1 12 7 14 6 9 Zr-95 2 18 8 20 9 9 Ru-106 9 75 30 90 41 40 Ag-110m 1 10 10 10 5 4 Te-129m 16 131 60 162 79 95 1-131 4 65 30 35 22 74 Cs-134 1 8 4 10 5 4 Cs-137 1 9 4 10 5 4 BaLa-140 3 32 15 25 14 36 Ce-144 7 40 16 54 26 18 72

January 1 - December 31, 2011 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 Discussion Land Use Survey A Land Use Survey was conducted to identify, Distance From Plant within a distance of 5 miles, the location of the (miles) nearest milk animal, the nearest residence, and Sector Res idence Garden 2 of SE 1.5 1.5 the nearest garden greater than 50 m in each the nine sectors over land. A detailed description SSE 1.3 1.3*

of the Land Use Survey, is given in a separate S 1.6 1.9*

document (Ref. 9). The position of the nearest SSW 1.5 1.6*

residence and garden in each sector out to 5 miles SW 1.1 1.1 is given in the adjacent table. There are no WSW 1.3 1.4 animals producing milk for human consumption W 1.3 1.5*

within the 5 mile radius. The nearest garden/ WNW 2.7 2.7 resident location within the 5-mile radius is in the NW 2.0 2.1*

SW sector; however, its distance from the plant is the same as that reported for the closest residence in that sector in 2010.

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 distances from the centerline of containment.,

73

January 1 - December 31, 2011 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-1 lists the locations of all the additional samples and the remaining tables in this appendix provide the results. Some of these samples were collected and analyzed to maintain the historical continuity for samples and sampling pathways discontinued when the Environmental Technical Specifi-cations were changed in March, 1985. Additionally, these results include the PICs which were being phased out in April and ending August 2011 due to unreliability of this type of monitoring.

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- 11 shows the direct radiation readings from TLDs placed at the perimeter of the Resin Storage Area which is 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.

In 2010 a deer population control program was initiated on the Calvert Cliffs site. Deer were harvested by Calvert Cliffs employees for consumption. Venison samples were collected from deer harvested on-site and deer harvested outside of the 10 mile radius. Subsequent samples of 2011 harvested deer analysis results were similar, thus it was concluded that this meat consumption pathway is not a significant source of dose.

Groundwater samples were collected from nine on-site piezometer tubes in 2011. A piezometer tube is a shallow monitoring well which allows access to groundwater at a depth of approximately 40 feet beneath the site. Three additional wells were installed in December of 2010 and are included in 2011 monitoring. 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 rad 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 2011 analysis results for Tritium are shown in Table E-12 and analysis results for gamma emitting radionuclides are shown in Table E-13.

74

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS - ANALYTICAL RESULTS Table Title Page E-i Locations of Non-Tech Spec Environmental Sampling Stations for Calvert Cliffs Nuclear P ow er P lan t .............................................................................................................................. 76 E-2 Synopsis of 2011 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environm ental M onitoring Program .................................................................................... 77 E-3 Annual Summary for Calvert Cliffs Nuclear Power Plant Units I & 2 Non-Tech Spec Radiological Environmental Monitoring Program ............................................................. 78 E-4 Concentration of Gamma Emitters in Bottom Sediment ................................................... 79 E-5 Concentration of Iodine-131 in Filtered A ir ....................................................................... 80 E-6 Concentration of Beta Emitters in Air Particulates ........................................................... 82 E-7 Concentration of Gamma Emitters in Air Particulates ....................................................... 84 E-8 Concentration of Tritium and Gamma Emitters in Taylors Island Well Water .................. 85 E-9 Direct Radiation as Measured in Pressurized Ion Chamber ............................................... 86 E -10 D irect R adiation ....................................................................................................................... 87 E- 1I Direct Radiation from Resin Storage Area ......................................................................... 88 E-12 Concentration of Tritium in Groundwater ............................................................. ..........- 89 E-13 Gross Concentrations of Gamma Emitters in Groundwater ............................................... 90 Figure Title Page E-i Site M ap of Groundwater M onitoring W ells ....................................................................... 91 75

January 1 - December 31, 2011 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 OSGDRI 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 PICI Taylors Island, Anderson's Property 12.6 7.8 ENE PIC2 On Site Before Entrance to Camp Conoy 0.7 0.4 S PIC3 Meteorological Station 0.8 0.5 WSW PIC4 NNW of ISFSI 0.6 0.4 SW PIC5 SSE of ISFSI 0.6 0.4 SSW PIC8 CCNPP Visitor's Center 0.3 0.2 NW 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 I 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.

76

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E-2 Synopsis of 2011 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 Aquatic Environment Bottom Sediment SA 2 4 Gamma SA 4 Atmospheric Environment 2

Air Iodine W 7 354 1-131 W 354 3

Air Particulates W 3 155 Gross Beta W 155 Gamma MVC 36 Direct Radiation Pressurized Ion M 6 32 4 Gamma M 32 Chamber Ambient Radiation Q 20 472 TLD Q 472 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 2 The collection device contains silver Zeolite or Charcoal

' Beta counting is performed after >72 hour decay, Gamma spectroscopy performed on monthly composites of weekly samples 4 PlC monitoring discontinued; half sites ended April, remaining sites ended August 2011.

77

January 1 - December 31, 2011 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 Type and Total Lower Limit of Indicator Location with Highest Annual Control Locations Pathway Sampled Number of Detection (LLD) Locations Mean Highest Annual Mean (F) / Range1 Mean (F)/Range (Unit of Analyses (F)/Range' Mean Measurement) Performed Name/Distance 2 &

Direction Aquatic Environment Bottom Sediment Gamma (4) 17 132 (2/2) Discharge Area 132 (2/2) 94 (2/2)

(pCi/kg) Cs-1 37 (128-136) WBS2 (128-136) (92-95) 0.3 km N Atmospheric Environment Air Iodine 1-131 (354) 1.5 6.7 (18/252) Visitors Center 8.7 (4/52) 7.8 (7/102)

(10-3pCi/m 3) (0.8- 17.6) SFA2 (2.7-14.4) (2.7-14.4) 0.7 km NNE Air Particulates Gamma (36) 1.8 1.6 (5/24) LONG BEACH LB 3.4 (4/24) 1.3 (1/12)

(10-2 pCi/m 3) Cs-1 37 (1.4-3.4) 4.4 km NW (0.6-3.4)1 (1.3)

Air Particulates Gross Beta (155) 0.5 2.1 (103/103) TAYLOR'S 2.3 (52/52) 2.3 (52/52)

(10-2 pCi/m 3) (0.7 - 4.6) ISLAND TI (0.8-4.6) (0.8-4.6) 12.6 km ENE Direct Radiation Pressurized Ion Ionization 6.79 (28/28) NNW of ISFSI 10.62 (7/7) 5.84 (4/4)

Chamber Chamber (32) (4.37-11.17) PIC4 (10.20-11.17) (5.74-6.05)

(mR/30 days) 0.6 km SW Ambient Radiation TLD (468) 22.34 (480/480) South Fence 49.51 (24/24)

(mR/90 days) (1.79-74.16) Lower RPDR10 (1.79-74.16) km

' Mean and range based upon detectable measurements only. Fraction (F) of detectable measurements at specified location is indicated in parentheses 2 From the centerpoint of the ISFSl facility 78

January 1 - December 31, 2011 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 6/24/2011 128 +/-43 10/13/2011 136+/-39 WBS4 1 Camp Conoy/ Rocky Point 6/24/2011 92 +/- 35 10/13/2011 95+/-43 Control Location

  • All Non-Natural Gamma Emitters <MDA 79

January 1 - December 31, 2011 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/m 3 +/- 2a)

Start Date Stop Date CA LB SFA1 SFA2 1 SFA3 SFA4 TI1 Cambridge LONG BEACH MET Station Visitors Center NNW of ISFSI SSE of ISFSI TAYLOR'S ISLAND "k

1/3/2011 1/10/2011 *t "k" 1/10/2011 1/17/2011 "k 1/17/2011 1/24/2011 "k 1/24/2011 1/31/2011 "k

1/31/2011 2/7/2011 "k

2/7/2011 2/14/2011 2/14/2011 2/21/2011 "k 2/21/2011 2/28/2011 2/28/2011 3/7/2011 3/7/2011 3/14/2011 2 3/14/2011 3/21/2011 ND2 3.5 +/- 3.9 1.3 +/-0.5 3.8 +/-0.9

  • 3/21/2011 3/28/2011 10.5+/-1.4 10.4 +/- 4.8 ND 14.4 +/- 2.3 8.7 +/- 2.9 12.8 +/- 1.8 8.3 +/- 1.4 3/28/2011 4/4/2011 10.1 +/-1.3 6.6 +/- 0.8 17.6 +/- 1.9 14.0+/-2.1 5.0 +/- 2.3 12.7 +/- 1.0 7.6 +/-4.2 4/4/2011 4/11/2011 2.6 +/- 2.7 3.6 +/- 0.6 5.4+/-0.7 2.7 +/- 0.8 3.8 +/-2.7 4.7 +/-0.7 4.1 +/-2.7 4/11/2011 4/18/2011 0.9 +/- 0.2 3 0.8 +/- 0.4 4/18/2011 4/25/2011 ND 4/25/2011 5/2/2011 5/2/2011 5/9/2011 5/9/2011 5/16/2011 5/16/2011 5/23/2011 5/23/2011 5/30/2011 5/30/2011 6/6/2011 ND 2 6/6/2011 6/13/2011 2 6/13/2011 6/20/2011 ND 6/20/2011 6/27/2011 6/27/2011 7/4/2011 7/4/2011 7/11/2011 7/11/2011 7/18/2011 80

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E Continued Concentration of Iodine-131 in Filtered Air (Results in units of 10-3 pCi/m 3 +/- 2a)

Start Date Stop Date CA LB SFA1 SFA2' SFA3 SFA4 TI1 Cambridge LONG MET Station Visitors Center NNW of ISFSI SSE of ISFSI TAYLOR'S BEACH ISLAND 7/18/2011 7/25/2011 7/25/2011 8/1/2011 8/1/2011 8/8/2011 8/8/2011 8/15/2011 8/15/2011 8/22/2011 8/22/2011 8/29/2011 2

8/29/2011 9/5/2011 ND 2 2 2 9/5/2011 9/12/2011 ND ND ND 9/12/2011 9/19/2011 ND 2 9/19/2011 9/26/2011 9/26/2011 10/3/2011 10/3/2011 10/10/2011 10/10/2011 10/17/2011 10/17/2011 10/24/2011 10/24/2011 10/31/2011 10/31/2011 11/7/2011 11/712011 11/14/2011 11/14/2011 11/21/2011 11/21/2011 11/28/2011 "A"

11/28/2011 12/5/21011 12/12/21011 W

12/5/2011 12/19/2(011

-/¢ 12/12/2011 12/19/2011 12/26/21Oil W 12/26/2011 1/2/2(012 Control Location 2 Power outage 3 Sampler malfunction/low flow

  • <MDA ND = No Data 81

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E-6 Concentration of Beta Emitters in Air Particulates (Results in units of 102 pCi/mr3 +/- 2cr)

Start Date Stop Date CA LB TI, Cambridge LONG BEACH TAYLOR'S ISLAND 1/3/2011 1/10/2011 3.6 +/- 0.3 3.0 +/- 0.3 3.2 +/- 0.3 1/10/2011 1/17/2011 2.2 +/- 0.3 1.9 +/- 0.2 2.0 +/- 0.3 1/17/2011 1/24/2011 1.9 +/- 0.3 2.8 +/- 0.4 2.9 +/- 0.3 1/24/2011 1/31/2011 2.6 +/- 0.2 2.3 +/- 0.3 3.0 +/- 0.3 1/31/2011 2/7/2011 1.6 +/- 0.3 1.6 +/- 0.2 1.7 +/- 0.3 2/7/2011 2/14/2011 2.2 +/- 0.3 2.0 +/- 0.3 2.5 +/- 0.3 2/14/2011 2/21/2011 2.0 +/- 0.2 1.6 +/-0.2 2.2 +/- 0.2 2/21/2011 2/28/2011 1.3 +/-0.3 1.4 +/- 0.2 1.9 +/-0.3 2/28/2011 3/7/2011 1.3 +/- 0.2 1.5 +/-0.3 1.8 +/-0.2 3/7/2011 3/14/2011 1.7 +/- 0.3 1.6 +/- 0.2 2.0 +/- 0.3 3/14/2011 3/21/2011 1.9 +/-0.2 2.2 +/- 0.2 2.0 +/- 0.2 3/21/2011 3/28/2011 3.7 +/- 0.3 4.6 +/- 0.3 4.6 +/- 0.3 3/28/2011 4/4/2011 2.0 +/- 0.3 3.0 +/- 0.2 4.1 +/-0.4 4/4/2011 4/11/2011 1.7 +/-0.2 1.7 +/- 0.2 2.5 +/- 0.3 4/11/2011 4/18/2011 1.2 +/-0.1 1.7 +/-0.2 1.3 +/-0.2 4/18/2011 4/25/2011 1.5 +/-0.2 1.6 +/-0.2 2.3 +/- 0.3 4/25/2011 5/2/2011 0.7 +/- 0.1 0.9 +/- 0.2 1.0 +/- 0.2 5/2/2011 5/9/2011 1.6 +/- 0.1 1.2 +/-0.2 1.7 +/-0.1 5/9/2011 5/16/2011 1.1 +/-0.1 0.9 +/- 0.2 1.0 +/-0.1 5/16/2011 5/23/2011 1.3 +/- 0.1 1.3+/-0.2 1.5 +/-0.1 5/23/2011 5/30/2011 2.2 +/- 0.1 2.1 +/-0.2 2.5 +/- 0.1 5/30/2011 6/6/2011 2.5 +/- 0.1 2.2 +/- 0.3 2.2 +/- 0.1 6/6/2011 6/13/2011 2.9 +/- 0.2 2.3 +/- 0.2 3.0 +/- 0.2 6/13/2011 6/20/2011 1.8 +/-0.1 1.4 +/- 0.2 1.9 +/-0.1 6/20/2011 6/27/2011 1.6 +/-0.1 1.5 +/-0.2 1.5 +/-0.1 6/27/2011 7/4/2011 2.4 +/- 0.1 1.5 +/- 0.2 2.2 +/- 0.1 7/4/2011 7/11/2011 2.7 +/- 0.2 2.2 +/- 0.3 2.6 +/- 0.2 7/11/2011 7/18/2011 1.7 +/-0.1 1.7 +/-0.3 1.6 +/-0.1 7/18/2011 7/25/2011 3.0 +/- 0.2 2.6 +/- 0.3 3.7 +/- 0.2 7/25/2011 8/1/2011 2.8 +/- 0.2 2.1 +/-0.2 2.6 +/- 0.2 8/1/2011 8/8/2011 2.3 +/- 0.1 1.6 +/-0.2 2.4 +/- 0.1 8/8/2011 8/15/2011 2.3 +/- 0.1 1.5 +/-0.2 2.3 +/- 0.1 8/15/2011 8/22/2011 2.3 +/- 0.1 2.1 +/-0.2 2.1 +/-0.1 8/22/2011 8/29/2011 1.6 +/-0.1 2.3 +/- 0.4 1.6 +/- 0.1 2

8/29/2011 9/5/2011 2.2 +/- 0.1 ND 2.3 +/- 0.1 9/5/2011 9/12/2011 1.3 +/- 0.1 1.4 +/-0.3 1.1 +/-0.1 9/12/2011 9/19/2011 2.4 +/- 0.1 1.9 +/- 0.3 2.2 +/- 0.1 9/19/2011 9/26/2011 0.8 +/- 0.1 0.7 +/- 0.2 0.8 +/- 0.1 9/26/2011 10/3/2011 1.4 +/-0.1 1.3 +/-0.1 1.5 +/- 0.1 82

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10.2 pCi/mr3 +/- 2a)

Start Date Stop Date CA LB TI1 Cambridge LONG BEACH TAYLOR'S ISLAND 10/3/2011 10/10/2011 2.8 +/- 0.1 2.5 +/- 0.2 2.6 +/- 0.1 10/10/2011 10/17/2011 2.6 +/- 0.1 3.3 +/- 0.2 2.9 +/- 0.2 10/17/2011 10/24/2011 1.9 +/- 0.1 2.2 +/- 0.1 1.7 +/- 0.1 10/24/2011 10/31/2011 2.8 +/- 0.1 2.4 +/- 0.2 2.8 +/- 0.1 10/31/2011 11/7/2011 1.6 +/- 0.1 1.7 +/-0.1 1.8 +/-0.1 11/7/2011 11/14/2011 2.8 +/- 0.2 2.8 +/- 0.2 2.8 +/- 0.2 11/14/2011 11/21/2011 2.6 +/- 0.1 2.4 +/- 0.1 2.6 +/- 0.1 11/21/2011 11/28/2011 1.9 +/- 0.1 2.2 +/- 0.1 2.0 +/- 0.1 11/28/2011 12/5/2011 1.7 +/-0.1 1.4 +/- 0.1 1.5 +/- 0.1 12/5/2011 12/12/2011 2.1 +/-0.1 2.0 +/- 0.1 2.4 +/- 0.1 12/12/2011 12/19/2011 4.4 +/- 0.2 4.1 +/-0.2 4.4 +/- 0.2 12/19/2011 12/26/2011 2.0 +/- 0.1 2.3 +/- 0.1 2.2 +/- 0.1 12/26/2011 1/2/2012 2.2 +/- 0.1 2.2 +/- 0.1 2.1 +/-0.1

'Control Location 2 Power outage after Hurricane Irene NND = No Data 83

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E-7 Concentration of Gamma Emitters in Air Particulates (Results in units of 10-3 pCi/m 3 +/- 2a)

Sample Date CA LB TI1 Cambridge LONG BEACH TAYLOR'S ISLAND 1/31/2011 * *

  • 3/1/2011 * *
  • 3/29/2011 * *
  • 5/2/2011
  • 3.4+ 1.122 5/30/2011 * *
  • 6/27/2011 * *
  • 8/1/2011 * *
  • 8/29/2011 * *
  • 10/3/2011 * *
  • 10/31/2011 *
  • 1.3 +0.83 11/28/2011 * *
  • 1/2/2012 * *
  • Control Location 2 Positive result for Cs-137 directly attributable to Fukushima Dai-lchi releases Positive result for Cs-137 was possibly from nearby land disturbance activities
  • All Non-Natural Gamma Emitters <MDA 84

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E-8 Conc(entration of Tritium and Gamma Emitters in Taylors Island Well Water (Results in units of 10-3 pCi/mi3 +/- 2a)

Sample Date Gamma Emitters H-3 1/23/2011 <294 2/27/2011 <298 3/21/2011 *

<298 4/19/2011 <301 5/23/2011 <299 6/21/2011 <301 7/19/2011 <305 8/29/2011 <303 9/20/2011 <310 10/18/2011 <287 11/22/2011 <287 12/13/2011 <292

  • All Non-Natural Gamma Emitters <MDA 85

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E-9 Direct Radiation as Measured in Pressurized Ion Chamber (Results in units of mR/30 days +/- 10%)

Sample Code Month Month PIC1I Taylor's Island JAN 5.82 +/- 5.70 FEB 5.77 +/- 5.40 MAR 6.05 +/- 5.90 APR 5.81 +/- 5.70 PIC2 2

Entrance to Camp Conoy JAN 4.43 +/- 29.00 FEB ND MAR 4.47 +/- 34.00 APR 4.63 +/- 195.00 MAY 4.43 +/- 28.20 JUN 4.37 +/- 4.20 JUL 5.73 +/- 6.40 AUG 4.44 +/- 54.80 PIC3 MET Station JAN 5.47 +/- 16.40 FEB 6.20 +/- 5.60 MAR ND 3 APR 5.00 +/- 4.50 PIC4 2

NNW of ISFSI JAN 11.06 +/- 36.90 FEB ND MAR 10.79 +/- 12.00 APR 11.17 +/- 187.00 MAY 10.68 +/- 46.00 JUN 10.26 +/- 5.10 JUL 10.21 +/- 5.50 AUG 10.20 +/- 33.30 PIC5 SSE of ISFS1 JAN 6.77 +/- 7.80 FEB 7.31 +/- 11.70 MAR 7.36 +/- 7.70 APR 7.28 +/- 112.20 MAY 6.72+/- 83.10 4 JUN 6.40 +/- 4.60 JUL ND AUG 6.29 +/- 7.60 PIC8 Visitor's Center JAN 5.42 +/- 54.20 FEB 5.95 +/- 33.50 MAR 5.28 +/- 32.50 APR 5.25 +/- 28.60

'Control Location 2 NCR, Reject Data 3Power outage 4~Instrument being serviced ND = No Data 86

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E-10 Direct Radiation (Results in units of mR/90 days +/- 2a)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter DR24 Rt. 4 and Parran Rd. 11.65 +/- 0.87 14.60 +1- 0.56 12.08 +/- 1.73 12.60 +1- 0.40 DR25 Camp Conoy Guard 12.88 +/- 0.42 15.62 +/- 1.32 13.02 +/- 0.81 13.73 +/- 0.90 House Rt. 235 and Clark's 11.28+/- 1.45 11.47 +/- 1.15 DR26 10.69 +/- 0.52 13.81 +/- 0.58 Landing Road DR27 Rt. 231 and Rt. 4 10.96 +/- 0.99 13.92 +/- 1.87 11.04 +/- 1.50 11.66 +/- 1.47 DR28 Taylors Is. Siren #35 13.05 +/- 0.62 17.65 +/- 1.47 13.61 +/- 1.09 13.69 +/- 1.42 DR29 Taylors Is. Siren #38 14.41 +/- 0.74 18.78 +/- 2.35 14.21 +/- 1.74 14.89 +/- 0.79 DR31 Cambridge 14.95 +/- 1.54 20.59 +/- 1.58 16.36 +/- 1.08 16.04 +/- 1.29 DR32 Twining Property, 14.05 +/- 1.50 19.00 +/- 2.29 15.48 +/- 1.36 14.44 +/- 1.57 Taylors Island DR33 P. A. Ransome Property 14.44 +/- 0.79 19.73 +/- 1.53 15.74 +/- 1.09 15.82 +/- 2.17 DR34 Shoreline at Barge Rd. 9.43 +/- 0.34 11.69 +/- 1.04 10.06 +/- 1.29 10.29 +/- 0.59 OSG1 North of Old Steam 17.77 +/- 0.87 23.83 +/- 1.91 18.07 +/- 1.80 18.45 +/- 2.24 Generator Storage Facility OSG2 West of Old Steam 15.80 +/- 1.96 21.30 +/- 1.94 15.26 +/- 2.48 16.39 +/- 1.57 Generator Storage Facility 87

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E-11 Direct Radiation from Resin Storage Area (Results in units of mR/90 days +/- 2y)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter RPDR05 North Fence Lower 69.55 +/- 7.93 34.46 +/- 2.94 22.38 +/- 4.42 64.84 +/- 5.98 RPDR06 North Fence Upper 25.50 +/- 1.83 22.79 +/- 2.52 18.20 +/- 1.88 17.00 +/- 1.97 RPDR07 West Fence Right 29.40 +/- 3.35 38.13 +/- 2.29 28.02 +/- 4.39 27.38 +/- 3.00 RPDR08 West Fence Left 23.44 +/- 1.44 29.17 +/- 1.19 18.32 +1- 2.02 18.69 +/- 1.88 RPDR09 South Fence Upper 27.00 +/- 2.27 28.66 +/- 1.98 20.90 +/- 1.47 17.81 +/- 2.29 RPDR10 South Fence Lower 62.67 +/- 4.96 74.16 +/- 6.17 ND1 59.42 +/- 5.77 RPDR1 1 East Fence Left 33.44 +/- 4.15 37.37 +/- 5.11 46.36 +/- 6.33 57.25 +/- 4.46 RPDR12 East Fence Right 29.27 +/- 3.67 38.62 +/- 2.36 27.48 +/- 1.10 31.79 +/- 2.69

'TLD missing after Hurricane Irene ND = No Data 88

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E-12 Concentration of Tritium in Groundwater (Results in units of pCi/L +/- 2cr)

Sample Date Piezometer Tube #s 11 12 13 15 18 19 20 21 22 01/30/2011 757+/- 186 05/25/2011 * * *

  • ND ND 06/13/2011 ND ND ND ND *
  • ND ND ND 09/26/2011 1280+/- 194 ND ND ND 09/30/2011 ND * *
  • ND ND ND ND ND 11/7/2011 859+/-181 * * * * *
  • Less than Minimum Detectable Activity (<MDA)

ND = No Data - Quarterly sample obtained as required.

89

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Table E-13 Gross Concentration of Gamma Emitters (Results in units of pCi/L +/- 2a)

Sample Date Piezometer Tube #s 11 12 13 15 18 19 20 21 22 01/30/2011 * * * * * * * *

  • 05/25/2011 * * * * * * * *
  • 09/26/2011
  • ND * * * * * *
  • 09/30/2011 ND
  • ND ND ND ND ND ND ND 11/7/2011 * * * * * * * * *
  • All Non-Natural Gamma Emitters <MDA ND = No Data - Quarterly sample obtained as required.

90

January 1 - December 31, 2011 Docket Nos. 50-317/50-318/72-8 Figure E-1 Site Map Groundwater Monitoring Wells

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OL.~fl~E~ h Ofl1frui dra~Mri by J. GUrt P~bdwe by P.Ocrutmf 91

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