Text

Annual Radiological Environmental Operating Report
	ML081400302
Person / Time
Site:	Calvert Cliffs
Issue date:	05/13/2008
From:	Gaines J; Constellation Energy Nuclear Group
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	Download: ML081400302 (87)
	v • d • e

Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 Nuclear Generation Group Constellation Energy, May 13, 2008 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 2007.

Should you have questions regarding this matter, please contact Mr. Jay S. Gaines at (410) 495-5219 or Ms. Brenda Nuse at (410) 495-4913.

Very trulyo

~yS. Gaines Director-Licensing JSG/CAN/bjd

Attachment:

As stated cc: D. V. Pickett, NRC S. Gray, DNR S. J. Collins, NRC R. Manley, MDE Resident Inspector, NRC

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, 2007 A. M. Barnett L. J. Bartal, Ph.D.

B. D. Nuse CONSTELLATION ENERGY CONSTELLATION ENERGY NUCLEAR GENERATION APRIL 2008

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE OF CONTENTS S.

SUM MA R Y ............................................................................................................................... 1 II. CALVERT CLIFFS NUCLEAR POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ............................................................ 3 II.A . IN TR OD U CTION ............................................................ ............................................. 3 II.B . PRO G RA M ............................................................................................................................ 3 II.B .I. O bjectives ...................................................................................................................... 3 11.B.2. Sam ple Collection .................................................................................................. 4 II.B .3. D ata Interpretation ................................................................................................... 4 II.B .4. Program Exceptions ................................................................................................. 4 II.C. RESULTS AN D D ISCU SSION S ......................................................................................... 4 II.C .1. A quatic Environm ent ............................................................................................... 4 II.C .2. Atm ospheric Environm ent ........................................................................................ 8 II.C .3. Terrestrial Environm ent .................................................................................................. 8 II.C .4. D irect Radiation ............................................................................ ............................... 10 II.D . CON CLU SION .................................................................................................................... 12 III. INDEPENDENT SPENT FUEL STORAGE INSTALLATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ......................................................... 18 III.A . IN TROD U CTION ............................................................................................................... 18 III.B . PRO GRA M ........................................................................................................................... 18 III.B .I. O bjectives .................................................................................................................... 18 III.B .2. Sample Collection ................................................................................................... 19 III.B .3. D ata Interpretation ................................................................................................... 19 III.B .4. Program Exceptions ................................................................................................. 19 III.C. RESULTS AN D D ISCU SSION S .................................................................................... 19 III.C.1. A tm ospheric Environm ent ...................................................................................... 19 III.C.2. Terrestrial Environm ent ............................................................................................... 20 III.C.3. D irect Radiation ..... ................. ................................................. 20 III.D . CON CLU SION .................................................................................................................... 21 IV . REFER EN CES ........................................................................................................................ 25 APPENDIX A Sample Locations for the REMP and the ISFSI .................... ................. 26 APPENDIX B Analysis Results for the REMP and the ISFSI ............................................ 34 A PPEN D IX C Q uality A ssurance Program ......................................................................... 54 A PPEN D IX D Land Use Survey ........................................................................................... 68 APPENDIX E Additional Samples and Analysis Results .................................................... 69 i

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 LIST OF FIGURES Figure Title Page 1 Tritium in Chesapeake Bay Water .................................................................................. 6 2 Silver-i 10m and Potassium-40 in Chesapeake Bay Oysters .......................................... 7 3 Nuclear Fallout in the Calvert Cliffs Area ....... ......................... 9 4 Mean TLD Gamma Dose, Calvert Cliffs Nuclear Power Plant ........................................ 11 5 Atmospheric Dispersion Around CCNPP Average Relative Air Concentrations ............ 14 6 Atmospheric Dispersion Around CCNPP Average Relative Ground Deposition ........ 15 7 M ean TLD Gamma Dose, ISFSI ............................................................................... 22 A-i Map of Southern Maryland and Chesapeake Bay Showing Location of Calvert Cliffs Nuclear Power Plant ............................................... 28 A-2 Calvert Cliffs Nuclear Power Plant Sampling Locations 0-2 Miles ........................... 29 A-3 Calvert Cliffs Nuclear Power Plant Sampling Locations 0-10 Miles ......................... 30 A-4 Independent Spent Fuel Storage Installation Sampling Locations .............................. 32 A-5 Enlarged Map of the Independent Spent Fuel Storage Installation Sampling Locations. 33 ii

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 LIST OF TABLES Table Title Page 1 Synopsis of 2007 Calvert Cliffs Nuclear Power Plant Radiological Environmental M onitoring Program ..................................................................................................... 16 2 Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Pow er Plant U nits 1 and 2 ............................................................................................ 17 3 Synopsis of 2007 Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation Radiological Environmental Monitoring Program ................. 23 4 Annual Summary of Radioactivity in the Environs of the Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation ...................................................... 24 A-I Locations of Environmental Sampling Stations for the Calvert Cliffs Nuclear Power P lan t ................................................................................................................................. 27 A-2 Locations of Environmental Sampling Stations for the Independent Spent Fuel Storage Installation at C alvert C liffs .......................................................................................... 31 B-I Concentration of Tritium and Gamma Emitters in Bay Water ..................................... 35 B-2 Concentration of Gamma Emitters in the Flesh of Edible Fish ................................... 36 B-3 Concentration of Gamma Emitters in Oyster Samples ................................................. 37 B-4 Concentration of Gamma Emitters in Shoreline Sediment .......................................... 38 B-5 Concentration of Iodine-131 in Filtered Air ................................................................ 39 B-6 Concentration of Beta Emitters in Air Particulates. 4........41 B-7 Concentration of Gamma Emitters in Air Particulates ................................................. 45 B-8a Concentration of Gamma Emitters in Vegetation Samples .......................................... 46 B-8b Concentration of Gamma Emitters in Vegetation From Locations Around the ISFSI ..... 47 B-9 Concentration of Gamma Emitters in Soil Samples From Locations Around the ISFSI. 48 B-10 Typical MDA Ranges for Gamma Spectrometry .......................... 49 B- 1I Typical LLDs for Gamma Spectrometry ...................................................................... 50 B -12 D irect R adiation ........................................................................................................... 51 C-i Results of Participation in Cross Check Programs ...................................................... 55 C-2 Results of Quality Assurance Program ......................................................................... 58 C-3 Teledyne Brown Engineering's Typical MDAs for Gamma Spectrometry ................. 67 E-1 Locations of Non-ODCM Environmental Sampling Stations for Calvert Cliffs N uclear Power Plant ...................................................................................................... 70 E-2 Synopsis of 2007 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environm ental M onitoring Program ............................................................................ 71 E-3 Annual Summary for Calvert Cliffs Nuclear Power Plant Units I & 2 Non Tech Spec Radiological Environmental Monitoring Program ...................................................... 72 E-4 Concentration of Gamma Emitters in Bottom Sediment ............................................ 73 E-5 Concentratino of Iodine- 131 in Filtered Air ..................................................................... 74 E-6 Concentration of Beta Emitters in Air Particulates ..................................................... 76 E-7 Concentration of Gamma Emitters in Air Particulates ................................................. 78 E-8 Concentration of Tritium and Gamma Emitters in Taylors Island Well Water ............ 79 E-9 Direct Radiation as Measured in Pressurized Ion Chamber ......................................... 80 E-10 D irect R adiation ............................................................................................................. 81 E-11 Direct Radiation from Resin Storage Area .................................................................. 82 iii

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 I.

SUMMARY

During this operating period for Calvert Cliffs Nuclear Power Plant (CCNPP) Units 1 and 2, a total of 3436 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 643 radiochemical analyses were performed on 575 environmental samples and 546 thermoluminescent dosimeters (TLDs) were analyzed for ambient radiation exposure rates as part of the original REMP. These analyses were performed to satisfy the requirements of the ODCM (Ref. 6) and the Environmental Technical Specifications (Ref. 5).

For the ISFSI monitoring program, 358 radiochemical analyses were performed on 298 environmental samples, 52 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, 582 analyses were performed on 534 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 72 monthly measurements. As mentioned earlier, these additional analyses reflect a commitment to maintain historical continuity for samples and sampling pathways discontinued from the program when the Environmental Technical Specifications were changed in March 1985 and to satisfy monitoring commitments made to the surrounding community.

And lastly, 237 radiochemical analyses were performed on 193 quality assurance samples and 132 quality assurance TLDs were analyzed as part of an internal and external quality assurance program associated with Teledyne Brown Engineering. Laboratory intercomparison samples were obtained and analyzed from Environmental Resource Associates (ERA) and Analytics' Inc.

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

1

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Monitoring the atmospheric environment involved sampling the air at various locations surrounding CCNPP and the ISFSI. Air particulates and gaseous iodine were collected on glass fiber filters and 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-two locations surrounding CCNPP and the ISFSI.

Natural radioactivity was detected in essentially all radiological analyses performed. Low levels of the man-made fission product Cs-137 were also observed in 24 of these analyses. All of these observations were attributed to fallout from past atmospheric weapons testing. Detailed discussions about the results of these analyses are contained in the body of this report.

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

a. a maximum thyroid dose of 1.0 x 10-2 mrem via liquid and gaseous pathways, which is about 0.01% of the acceptable limit of 75 mrem/yr as specified in 40 CFR Part 190;

b. a maximum whole body dose of 2.44 x 10-3 mrem via liquid and gaseous pathways, which is less than 0.01% of the acceptable limit of 25 mrem/yr as specified in 40 CFR Part 190;

c. a maximum calculated dose to all other organs via liquid and gaseous pathways was equal to 4.68 x 103 mrem to the skin. This dose is less than 0.02% of the allowable limit of 25 mrem/yr as specified in 40 CFR Part 190.

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

January 1 - December 31, 2007 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-I, page 28.

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

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

The report presents the content of the REMP (Table 1), the sampling locations (Appendix A), the summary of the analytical results (Table 2), a compilationof 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 1 and 2.

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

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

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 concentration of radionuclides in important pathways.

3

January 1 - December 31, 2007 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, 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 for 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.

II.C.l.a. Bay Water Monthly bay water samples were taken from two locations during the year. These locations are the Intake Area (sample code Wal) and the Discharge Area (sample code Wa2). The samples were obtained from a composite sampling system operating at each location for the entire sampling period. These samples were analyzed for tritium and gamma emitters.

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

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

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

4

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 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 lal and Ia2) and from the Patuxent River (sample codes 1a4 and Ia5). As shown in Table B-2, two species of fish were sampled at both the plant discharge and the control point in the Patuxent River. Oyster samples were obtained quarterly from Camp Conoy (sample code Ia3) and Kenwood Beach (1a6).

Edible portion of the fish and oyster samples were analyzed for gamma emitters. Gamma spectrometric analyses of the fish exhibited naturally occurring K-40 in all four samples collected, while detectable concentrations of Cs-137 were observed in two of them: one from the Discharge area Ial, collected on 8/22/2007 at a concentration of 7 +/- 9 pCi/Kg and the other from the Patuxent River Wa5, collected on 9/9/2007 at a concentration of 20 +/- 10 pCi/Kg.

Although the presence of Cs-137 may be related to plant operations, it is most probably due to lingering fallout from past atmospheric nuclear weapons testing. Oyster samples exhibited naturally occurring K-40, but no detectable concentrations of any plant related radionuclides.

II.C.l.c. Shoreline Sediment Semiannual shoreline sediment samples were taken from one location during the year. This location is Shoreline at Barge Road (sample code Wbl). 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.

5

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE 1 Tritium in Chesapeake Bay Water 1200 1000 800 600 I-400 200 0

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January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE 2 Silver-ll0m and Potassium-40 in Chesapeake Bay Oysters 0.2 0.18 0.12 0.1

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January 1 - December 31, 2007 Docket Nos. 50-3 17/50-318/72-8 II.C.2. Atmospheric Environment The atmospheric environment was monitored by analyzing air particulate filters and 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. Thevalues ranged from 0.7 x 10-2 to 5.4 x 102 pCi/mi3 for the indicator locations and 0.8 x 10-2 to 4.9 x 10-2 pCi/mi3 at the control location. The location with the highest overall mean of 2.1 x 10-2 pCi/m 3 was A4, Route 765 at Lusby.

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

Figure 3 depicts the historical trends of beta activity.

II.C.2.b. Air Iodine Weekly composited 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 Silver Zeolite cartridges collected from all five locations exhibited no detectable concentrations of 1-131.

Figure 3 depicts the historical trends of radioiodine.

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.

8

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE 3 Nuclear Fallout in the Calvert Cliffs Area SURFACE AIR VAPORS, LUSBY, MD (A4) 250 ATMOSPHERIC 200 FALLOUT E

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January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 II.C.3.a. Vegetation Nine vegetation samples were collected from three locations during the year. These locations are Garden Plot off Bay Breeze Road (sample codes IbI, Ib2, and Ib3), On Site before the Entrance to Camp Conoy (sample codes Ib4, Ib5, and Ib6), and the Emergency Operations Facility (sample codes Ib7, Ib8, and Ib9). These samples were analyzed for gamma emitters, including analyses for 1-131.

All samples showed detectable amounts of naturally occurring K-40 and Be-7. Detectable concentrations of Cs-137 were observed in two of the eighteen indicator samples: a squash sample at Bay Breeze Rd. IbI, collected on 9/30/2007 at a concentration of 25 +/- 20 pCi/Kg and a sample of tree leaves from Camp Conoy Entrance Ib5, collected on 9/30/2007 at a concentration of 112 +/- 23 pCi/Kg. No other plant related radionuclides were found in any of these samples.

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

TLDs were collected quarterly from twenty-three locations surrounding the plant. The twenty indicator locations are On Site Along the Cliffs (sample code DRI), Route 765 Auto Dump (sample code DR2), Giovanni's Tavern (sample code DR3), Route 765 across from White Sands (sample code DR4), John's Creek (sample code DR5), Lusby (sample code DR6), On Site before the Entrance to Camp Conoy (sample code DR7), On Site at Emergency Siren (sample code DR8), Bay Breeze Road (sample code DR9), Decatur and Calvert Beach Roads (sample code DRIO), Dirt Road off Mackall and Parran Roads (sample Code DRI 1), Mackall and Bowen Roads (sample code DRI2), Wallville (sample code DR13), Rodney Point (sample code DR14),

Mill Bridge and Turner Roads (sample code DRI 5), Appeal School (sample code DRI 6), Cove Point and Little Cove Point Roads (sample code DR17), Cove Point (sample code DR18), Long Beach (sample code DRI9), and On Site Near Shore (sample code DR20). The three control locations are the Emergency Operations Facility (sample code DR21), Solomons Island (sample code DR22), and Taylors Island, Carpenters Property (sample code DR23).

The mean 90 day ambient radiation measured at the indicator locations was 11.54 mR and ranged from 8.82 to 16.05 mR as reported in Table 2. The control locations showed a 90 day mean of 13.01 mR with ranges from 9.84 to 18.22 mR. The location with the highest overall mean of 15.80 was DR23, Taylors Island, which ranged from 14.07 to 18.22 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.

10

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE 4 Mean TLD Gamma Dose, Calvert Cliffs Nuclear Power Plant 6

-- 4 Miles (DR1 0-18)

--- Control Locations (DR21-23)

On-Site (DRI, 7, 8, & 20) 5 4

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11

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 II.D. CONCLUSION No man-made fission 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- IlOim 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 9.0 x 10- 3 mrem to a child via the plume, ground, vegetable, meat, and inhalation pathways at 1.8 km SW of the containments at Calvert Cliffs. This is about 0.01% of the acceptable limit of 75 mrem/yr as specified in 40 CFR Part 190, "Environmental Radiation Protection Standards for Nuclear Power Operations."

A maximum whole body gamma dose of 1.3 x 103 mrem to a child at 2.1 km SE of the containments at Calvert Cliffs. This is less than 0.01% of the acceptable dose limit of 25 mrem/yr as specified in 40 CFR Part 190.

A maximum dose to any other organ, in this case the skin, of 4.6 x 10-3 mrem to an adult at 2.1 km SE of the containments at Calvert Cliffs. This is less than 0.02% of the acceptable dose limit of 25 mrem/yr as specified in 40 CFR Part 190.

Liquid Pathways A maximum thyroid dose of 1.0 x 10-3 mrem to an adult for all liquid pathways, which is about 0.00 1% of the acceptable dose limit of 75 mrem/yr as specified in 40 CFR Part 190.

A maximum whole body dose of 1.1 x 10-3 mrem to an adult via all liquid pathways, which is less than 0.01% of the acceptable dose limit of 25 mrem/yr as stated in 40 CFR Part 190.

A maximum dose to any organ, in this case GI Tract, of 2.7 x 10-3 mR to an adult for all pathways, which is 0.0 1% of the acceptable dose limit of 25 mrem/yr specified in 40 CFR Part 190.

12

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Gaseous and Liquid Pathways Combined A maximum thyroid dose of 1.0 x 10-2 mrem via liquid and gaseous pathways, which is about 0.01% of the acceptable limit of 75 mrem/yr as specified in 40 CFR Part 190; A maximum whole body dose of 2.44 x 10-3 mrem via liquid and gaseous pathways, which is less than 0.01% of the acceptable limit of 25 mrem/yr as specified in 40 CFR Part 190;

'A maximum calculated dose to all other organs via liquid and gaseous pathways was equal to 4.68 x 10-3 mrem to the skin. This dose was less than 0.02% of the allowable limit of 25 mrem/yr as specified in 40 CFR Part 190.

In all cases, the calculated doses are a small-fraction of the applicable limits specified in 40 CFR Part 190.

Therefore, it is concluded that the operation of Calvert Cliffs Units I & 2 produced radioactivity and ambient radiation levels significantly below the limits of the ODCM and 40 CFR Part 190, and there was no significant buildup of plant-related radionuclides in the environment due to the operation of the CCNPP.

13

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE 5 Atmospheric Dispersion Around CCNPP Average Relative Air Concentrations SIT E: CALUERT CLIFFS 3126/B812:5S E: TIHE INTEGRATED TITL]D:8786.619 ELEURTED AJERAGE FOXQ UE HOUR INTEGRRI'ION;RELER5E C

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January 1- December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE 6 Atmospheric Dispersion Around CCNPP Average Relative Ground Deposition SITrE, CALUERT CLIFFS LE: TIME INTEGRATED DEPOSITIOH 0/Q 03/26/88 12:65 TITL PER I 00:7876.60 HOUR INTEGRATION,'RELEfR5E r E SCALE:0 O .U MILE5

.1L5 MODEL- TIME INTEGRATED STRA(GHT LINE SIART DOSE INTEGRATION! 01/01/?7 6131!0 END DOSE INTEGRATION! 12/31/67 24:!0 CONfTOUR D/B LEGEND (1/i2) 1 4IE-409 2 2.0E-@g-4.0E-6g9 3 1. EE-89-2.OE-09 4 ?.BE-1fl-1.BE-09 6 4.E-16-?.0E-l0 2.E-16-4.,E-10 7 1.@E-16-2.OE-10 S .UE-11-1,0E-18 H

16 4.@E-11-7.OE-11 2.GE-11-4.OE-11 15

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table 1 Synopsis of 2007 Calvert Cliffs Nuclear Power Plant Radiological Environmental Monitoring Program Sample Type Sampling Number of Number Analysis Analysis Number Frequency Locations Collected Frequency1 Analyzed Aquatic Environment Bay Water MC 2 24 Gamma M 24 H-3 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 5 255 1-131 W 255 Air Particulates 4 W 5 255 Gross Beta W 255 Gamma MC 60 Direct Radiation Ambient Radiation Q 23 546 TLD Q 546 Terrestrial Environment Vegetation 5 M 3 27 Gamma M 27

'W=weekly, M=monthly, Q=quarterly, SA=semiannual, A=annual, C=composite 2 Once in Season, July through September

'The collection device contains Silver Zeolite 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 16

, January 1 - December 31, 2007 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 I and 2 Medium or Type and Lower Limit Indicator Location with Highest Highest Control Pathway Total Number of Detection Locations Annual Mean Annual Mean Locations Sampled (Unit of of Analyses (LLD) Mean Name/Distance 2 & (F) / Range 1 Mean Measurement) Performed (F)/Range 1 Direction (F)/Range' Aquatic Environment Fish Gamma (4) 15 7 (1/2) Patuxent River la5 20 (1/1) 20(1/2)

(pCi/kg wet) Cs-1 37 Atmospheric Environment Air Gross Beta 0.5 1.9 Route 765 at Lusby 2.1 (50/52) 2.0 (50/52)

Particulates (255) (205/205) A4 (0.7-5.4) (0.8-4.91)

(10-2 pCi/m 3 ) (0.7-5.4) 2.9 km SSW Direct Radiation Ambient TLD (546) 11.54 Taylors Island DR23 15.80 (24/24) 13.01 (66/72)

Radiation (480/480) 12.6 km ENE (14.07-18.22) (9.84-18.22)

(mR/90 days) (8.82-16.05)

Terrestrial Environment Vegetation Gamma (27) 27 69 (2/18) Camp Conoy 112 (1/3)

(pCi/L) Cs-1 37 (25-112) Entrance Ib5 0.7 km S Mean and range based upon detectable measurements only. Fraction (F) of detectable measurements at specified locations is indicated in parentheses 2 From the centerpoint between the two containment buildings.

17

January 1 - December 31, 2007 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, four additional canisters of spent fuel were transferred to the ISFSI.

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

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

The ISFSI monitoring program is as described in this section of the report. 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. PIC results, however, are given in Table E-9 and will continue to be Non-ODCM surveillance to satisfy our commitment to the surrounding community.

The results were compared with that generated during the previous ISFSI pre-operational periods (Ref. 11) and the current and previous CCNPP REMP periods. These comparisons show little deviations from previous 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.

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 40 CFR Part 190,

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, 18

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8

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).

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).

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

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

III.C.l.a. Air Particulate Filters Weekly composite air particulate filter samples were collected from five locations during the period. These locations are On Site before the Entrance to Camp Conoy (sample code Al; in common with the CCNPP REMP), Meteorological Station (SFA1), CCNPP Visitor's Center (SFA2), NNW of the ISFSI (SFA3), and SSE of the ISFSI (SFA4). These samples were analyzed for beta radioactivity and gamma emitting radionuclides.

Weekly analyses for beta activity on air particulate filters collected from all five locations showed values characteristic of levels routinely observed in the REMP. These values ranged 3 2

from 0.5 x 10-2 to 5.6 x 10-2 pCi/mi3 for the indicator locations and 0.8 x 10-2 to 4.4 x:10 Ci/m for the control location. The location with the highest overall mean of 2.0 x 10-2 pCi/m 3 was Entrance to Camp Conoy At, S of ISFSI.

19

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Gamma spectrometric analyses of monthly composited air particulate samples exhibited no detectable concentrations of any plant-related radionuclides in any of these samples. Naturally occurring radionuclides, such as Be-7, were detected in nearly all samples.

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

III.C.2.a. Vegetation Vegetation samples were collected quarterly from five locations during the year. These locations are: Meteorological Station (sample code SFbl), 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.

Detectable concentrations of Cs-137 were observed in four of sixteen indicator locations ranging from 15 +/- 12 to 43 +/- 26 pCi/Kg. Although the presence of Cs-137 may be related to the operations of the plant, the most probable source is due to fallout from past weapons testing.

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 twelve quarterly samples from both indicator and control locations. The Cs-137 concentrations ranged from 103 + 39 to 743 +/- 133 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. In addition, the levels of the Cs-137 activity are comparable to those observed in previous annual reporting periods for the CCNPP REMP and in the earlier pre-operational data for the ISFSI. No 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 20

January I - December 31, 2007 Docket Nos. 50-317/50-318/72-8 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 SFDRI 1); WSW of ISFSI, (sample code SFDR12); South of ISFSI, (sample code SFDR13); SE of ISFSI, (sample code SFDR14); ENE of ISFSI, (sample code SFDR15); SSW of ISFSI, (sample code SFDR16); NNE of ISFSI, (sample code SFDR17) and West of ISFSI, (sample code SFDR18). Sampling locations are shown on Figures A-4 and A-5.

The mean 90 day ambient radiation measured at the ISFSI indicator locations was 26.06 mR and ranged from 9.61 to 45.97 mR as reported in Table 4. The control location showed a 90 day mean of 13.01 mR and ranged from 12.04 to 14.07 mR. The location with the highest overall mean of 42.14 mR with a range of 39.31 to 45.9 mR was SFDR18, West of ISFSI. These readings are consistent withthose 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 activities of this radionuclide are well below the federal limits established in 40 CFR Part 190, "Environmental Radiation Protection Standards for Nuclear Power Operations".

The Cs-137 observations were attributed to fallout from past atmospheric weapons testing. 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.

21

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE 7 Mean TLD Gamma Dose, ISFSI 10 Control Location (SFDR7) 9 9 - ISFSI Mean (DR7 & 30, SFDR1 -6, 8-18) 8 7

E 4 3

2 1

0 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 22

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table 3 Synopsis of 2007 Calvert Cliffs Nuclear Power Plant Independent Spent Fuel Storage Installation Radiological Environmental Monitoring Program Sample Type Sampling - Number of Number Analysis Analysis Number Frequency Locations Collected Frequency' Analyzed Atmospheric Environment 2

Air.Particulates W 5 258 Gross Beta W 258 Gamma MC 60 Direct Radiation Ambient Radiation Q 20 480 TLD Q 480 Terrestrial Environment Vegetation Q 5 20 Gamma Q 20 Soil Q 5 20 Gamma Q 20 W=weekly, M=monthly, Q=quarterly, SA=semiannual, A=annual, C=composite 2 Beta counting is performed after >72 hour decay, Gamma spectroscopy performed on monthly composites of weekly samples 23

January 1 - December 31, 2007 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 Pathway Type and Lower Limit Indicator Location with Highest Control Total Sampled (Unit of of Detection Locations Highest Annual Annual Mean Locations Measurement) Number of (LLD) Mean Mean (F) / Range' Mean Analyses (F)/Rangel Name/Distance 2 & (F)/Rangel Performed Direction Atmospheric Environment Air Particulates Gross Beta 0.5 2.5 (206/206) Entrance to Camp 2.0 (52/52) 1.9 (52/52)

(10-2 pCi/m 3) (258) (0.5-5.6) Conoy A 1 (0.7-3.7) (0.8-4.4) 0.7 km S Direct Radiation Ambient Radiation TLD (480) -- 26.06 (456/456) West of ISFSI 42.14 (24/24) 13.01 (24/24)

(mR/90 days) (9.61-45.97) SFDR18 (39.31-45.97) (12.04-14.07) 0.1 kmW Terrestrial Environment Vegetation Gamma (20) 27 26 (4/16) On Site before 29 (2/4)

(pCi/L) Cs-137 (15-43) Entrance to Camp (15-43)

Conoy SFb5 0.7 km ESE Soil Gamma (20) 17 523 (9/16) NNW ofISFSI SFS3 607 (4/4) 133 (3/4)

(pCi/kg) Cs-137 (165-743) 0.1 km NNW (502-727) (103-153)

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

24

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 IV. REFERENCES (1) Cohen, L. K., "Preoperational Environmental Radioactivity Monitoring Program at Calvert Cliffs Units 1 and 2", NUS No. 882 Semiannual Report January-June 1971, December 1971; NUS No. 1025 Annual Report 1971, March 1973.

(2) Cohen, L. K., "Preoperational Environmental Radioactivity Monitoring Program at Calvert Cliffs Units 1 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, General Services Department.

(9) Constellation Energy, "Land Use Survey Around Calvert Cliffs Nuclear Power Plant, August 2007."

(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.

25

January 1 - December 31, 2007 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.

26

January 1 - December 31, 2007 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' Station Description (KM) (Miles) (Sector)

Al On Site before Entrance to Camp Conoy 0.7 0.4 S A2 Camp Conoy at Emergency Siren 2.5 1.6 SSE A3 Bay Breeze Road 2.6 1.6 SE A4 Route 765 Lusby 2.9 1.8 SSW A5 Emergency Operations Facility (EOF) 19.3 12.0 wNW DRI On Site along Cliffs 0.6 0.4 NW DR2 Route 765, Auto Dump. 2.7 1.7 WNW DR3 Route 765, Giovanni's Tavern (Knotty Pine) 2.3 1.4 W DR4 Route 765, across from White Sands Drive 2.0 1.2 WSW DR5 Route 765, John's Creek 2.4 1.5 SW DR6 Route 765 Lusby 2.9 1.8 SSW DR72 On Site before Entrance to Camp Conoy 0.7 0.4 S DR8 Camp Conoy at Emergency Siren 2.5 1.6 SSE DR9 Bay Breeze Road 2.6 1.6 SE DR1O Calvert Beach Rd. and Decatur Street 6.4 4.0 NW DR 1I Dirt road off Mackall & Parran Roads 6.6 4.1 WNW DR12 Mackall and Bowen Roads 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 and Turner Roads 6.2 3.9 SSW DR16 Across from Appeal School 6.5 4.0 S DR17 Cove Point and Little Cove Point Roads 5.9 3.7 SSE DR18 Cove Point 7.1 4.4 SE DR19 LongBeach 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, Carpenter's Property 12.6 7.8 ENE Ial,2 Discharge Area 0.3 0.2 N la3 Camp Conoy 0.9 0.6 E Ia4,5 Patuxent River N/A N/A N/A Ia6 Kenwood Beach 10.7 6.6 NNW Ial0 Hog Island 15.3 9.5 SSE Ibl,2,3 Garden Off Bay Breeze Road 2.6 1.6 SSE Ib4,5,6 On Site before Entrance to Camp Conoy 0.7 0.4 S Ib7,8,9 Emergency Operations Facility (EOF) 19.3 12.0 WNW Wa 1 Intake Area 0.2 0.1 NNE Wa2 Discharge Area 0.3 0.2 N Wbl 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.

27

January 1 - December 31, 2007 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 28

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE A-2 Calvert Cliffs Nuclear Power Plant Sampling Locations 0-2 Miles 29

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE A-3 Calvert Cliffs Nuclear Power Plant Sampling Locations 0-10 Miles 30

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE A-2 Locations of Environmental Sampling Stations for the Independent Spent Fuel Storage Installation at Calvert Cliffs Distance' Direction' Station Description (KM) (Sector)

Air Particulate A_12 On Site before Entrance to Camp Conoy 0.3 ESE SFAI Meteorological Station 0.3 NW SFA2 CCNPP Visitor's Center 0.8 N SFA3 NNW of ISFSI 0.1 NNW SFA4 SSE of ISFSI 0.1 SSE Direct Radiation SFDR1 SW of ISFSI 0.2 SW SFDR2 NNW of ISFSI 0.2 NNW SFDR3 North of ISFSI 0.1 N SFDR4 NE of ISFSI 0.1 NE SFDR5 East of ISFSI 0.1 E SFDR6 ESE of ISFSI 0.1 ESE SFDR7 CCNPP Visitor's Center 0.8 N SFDR8 NNW of ISFSI 0.1 NNW SFDR9 SSE of ISFSI 0.1 SSE SFDR1O NW of ISFSI 0.1 NW SFDR1 1 WNW of ISFSI 0.1 WNW SFDR12 WSW of ISFSI 0.04 WSW SFDR13 South of ISFSI 0.1 S SFDR14 SE of ISFSI 0.1 SE SFDR15 ENE of ISFSI 0.1 ENE SFDR16 SSW of ISFSI 0.04 SSW SFDR17 NNE of ISFSI 0.1 NNE SFDR18 West of ISFSI 0.04 W DR7 On Site before Entrance to Camp Conoy 0.3 ESE DR30 Meteorological Station 0.3 NW Vegetation SFb1 Meteorological Station 0.3 NW SFb2 CCNPP Visitor's Center 0.8 N SFb3 NNW of ISFSI 0.1 NNW SFb4 SSE of ISFSI 0.1 SSE SFb5 On Site before Entrance to Camp Conoy 0.3 ESE Soil SFS1 Meteorological Station 0.3 NW SFS2 CCNPP Visitor's Center 0.8 N SFS3 NNW of ISFSI 0.1 NNW SFS4 SSE of ISFSI 0.1 SSE SFS5 On Site before Entrance to Camp Conoy 0.3 1 ESE 1 Distance and direction from the central point of the ISFSI.

2 Common to both REMP and ISFSI monitoring program.

31

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE A-4 Independent Spent Fuel Storage Installation Sampling Locations

-407 32

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 FIGURE A-5 Enlarged Map of the Independent Spent Fuel Storage Installation Sampling Locations SF51 rSFb1 PIC3 SPAI located withiu NW, 33

January 1 - December 31,2007 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.

34

January 1 - December 31, 2007 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 +/-2ca)

Sample Code Sample H-3' Gamma Emitters Date Wal 1/31/2007 Intake Vicinity 2/28/2007 3/29/2007 <335 4/27/2007 5/31/2007 7/1/2007 <357 7/31/2007 8/31/2007 9/28/2007 <357 10/31/2007 11/30/2007 12/31/2007 <376 Wa2 1/31/2007 Discharge Vicinity 2/28/2007

3/29/2007 <335 4/27/2007 5/31/2007 7/1/2007 <357 7/31/2007 8/31/2007 9/28/2007 <357 *k 10/31/2007 "*

11/30/2007 "*

12/31/2007 <494

'Quarterly composites of monthly samples All Non-Natural Gamma Emitters <MDA 35

January 1 - December 31, 2007 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 Sample Sample Type Cs-1 37 Gamma Emitters CODE Date

k lal 8/22/2007 Bluefish 7+/-9 Discharge Area 2

la2 8/22/2007 Spot

Discharge Area 2

la4 1 9/7/2007 Bluefish

Patuxent River la5 1 9/9/2007 Spot 20 +/- 10

Patuxent River 1Control Location 2 This isotope < MDA

All Non-Natural Gamma Emitters <MDA 36

January 1 - December 31, 2007 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) +/-2a)

SAMPLE CODE Sample Gamma Emitters Date la3 3/28/2007

Camp Conoy 6/27/2007

8/22/2007

10/31/2007

la6 1 3/28/2007

Kenwood Beach 6/27/2007 *

.8/22/2007

10/31/2007

1 Control Location

All Non-Natural Gamma Emitters <MDA 37

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-4 Concentration of Gamma Emitters in Shoreline Sediment (Results in units of pCi/kg (dry) +/-2a)

SAMPLE CODE Sample Gamma Emitters Date Wbl 5/31/2007

Shoreline at Barge Rd. 12/18/2007

All Non-Natural Gamma Emitters <MDA 38

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-5 Concentration of Iodine-131 in Filtered Air (Results in units of 10-3 pCi/m 3 +2a)

Start Date Stop Date Al A2 A3 A4 A51 Entrance Camp Bay Route 765 EOF to Camp Conoy Breeze at Lusby Conoy Siren Rd 1/1/2007 1/8/2007 * * *

1/8/2007 1/15/2007 * * *

1/15/2007 1/22/2007 * * *

1/22/2007 1/29/2007 * * *

1/29/2007 2/5/2007 * * *

2 2/5/2007 2/12/2007 * *

2/12/2007 2/19/2007 * * *

2/19/2007 2/26/2007 * * *

2/26/2007 3/5/2007 * * *

3/5/2007 3/12/2007 * * *

3/12/2007 3/19/2007 * * *

3/19/2007 3/26/2007 * * *

3/26/2007 4/2/2007 * * *

4/2/2007 4/9/2007 * *

4/9/2007 4/16/2007 * *

2 4/16/2007 4/23/2007 * *

4/23/2007 4/30/2007 * *

4/30/2007 5/7/2007 * * *

2 5/7/2007 5/14/2007 * *

5/14/2007 5/21/2007 * * *

5/21/2007 5/28/2007 * * *

5/28/2007 6/4/2007 * * *

2 6/4/2007 6/11/2007 * *

6/11/2007 6/18/2007 * * *

6/18/2007 6/25/2007 * * *

6/25/2007 7/2/2007 * * *

Control Location 2 Sampler Malfunction; Loss of Data All Non-Natural Gamma Emitters <MDA 39

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-5 Continued Concentration of Iodine-131 in Filtered Air (Results in units of 10-3 pCi/m 3 _+2C)

Start Date Stop Date Al A2 A3 A4 A5' Entrance Camp Bay Route 765 EOF to Camp Conoy Breeze at Lusby Conoy Siren Rd

-* * *1

7/2/2007 7/9/2007 */

/ *

7/9/2007 7/16/2007

*t

7/16/2007 7/23/2007 7/23/2007 7/30/2007

t 7/30/2007 8/6/2007 *

* *I

8/6/2007 8/13/2007 8/13/2007 8/20/2007 8/20/2007 8/27/2007 * * *

'8/27/2007 9/3/2007 * *

9/3/2007 9/10/2007 9/10/2007 9/17/2007 *t

9/17/2007 9/24/2007 *

9/24/2007 10/1/2007 *R 10/1/2007 10/8/2007 *k 10/8/2007 10/15/2007 10/15/2007 10/22/2007 10/22/2007 10/29/2007

* *R

10/29/2007 11/5/2007 11/5/2007 11/12/2007 11/12/2007 11/19/2007 11/19/2007 11/26/2007 *

11/26/2007 12/3/2007

12/3/2007 12/10/2007 12/10/2007 12/17/2007 12/17/2007 12/24/2007 12/24/2007 12/31/2007 1 Control Location All Non-Natural Gamma Emitters <MDA 40

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-6 Concentration of Beta Emitters in Air Particulates (Results in units of 10.2 pCi/m3 _+2r)

Start Date Stop Date Al A2 A3 A4 AV1 Entrance to Camp Bay Route 765 EOF Camp Conoy Breeze at Lusby Conoy Siren Rd 1/1/2007 . 1/8/2007 0.7 +/- 0.1 1.0 +/- 0.2 0.7 +/- 0.1 1.0 +/-0.2 0.9 +/- 0.1 1/8/2007 1/15/2007 1.8 +/-0.2 1.9 +/- 0.2 1.4 +/-0.2 1.4 +/- 0.2 1.4 +/- 0.2 1/15/2007 1/22/2007 1.0 +-/- 0.2 1.5 +/- 0.2 1.2 +/-0.2 1.2 +/-0.2 0.9 +/- 0.1 1/22/2007 1/29/2007 1.8 +/-0.2 1.9 +/- 0.3 2.2 +/- 0.2 1.9 +/-0.2 1.5 +/ 0.2 1/29/2007 2/5/2007 2.5 +/- 0.2 2.5 +/-0.2 2.4 +/- 0.2 2.7 +/- 0.2 2.3 +/- 0.2 2

2/5/2007 2/12/2007 2.0 +/- 0.2 1.7 +/-0.2 2.3 +/- 0.2 2.2 +/- 0.2 2/12/2007 2/19/2007 2.0 +/- 0.2 2.4 +/- 0.2 2.2 +/- 0.2 2.3 +/- 0.2 1.6 +/-0.2 2/19/2007 2/26/2007 1.5 +/-0.2 1.8 +/- 0.2 2.0 +/- 0.2 1.9 +/-0.2 1.3 +/-0.2 2/26/2007 3/5/2007 1.1 +/-0.2 1.4 +/-0.2 1.2 +/- 0.2 1.5 +/- 0.2 1.0 +/-0.1 3/5/2007 3/12/2007 2.3 +/- 0.2 2.3 +/- 0.2 2.2 +/- 0.2 2.5 +/- 0.2 2.0 +/- 0.2 3/12/2007 3/19/2007 1.4 +/-0.2 1.6 +/-0.2 1.9 +/-0.2 2.0 +/- 0.2 1.4+/-0.2 3/19/2007 3/26/2007 1.7 +/- 0.2 2.2 +/- 0.2 2.1 +/-0.2 2.8 +/- 0.3 1.5 +/-..2 3/26/2007 4/2/2007 1.9 +/- 0.2 1.8 +/-0.2 1.8 +/-0.2 2.6 +/- 0.3 1.5 +/-0.2 4/2/2007 4/9/2007 1.4 +/-0.2 1.3 +/-0.2 1.5 +/- 0.2 2.2 +/- 0.3 1.4 +/-0.2 4/9/2007 4/16/2007 1.0 +/-0.2 1.0 +/-0.2 1.4 +/-0.2 1.3 +/-0.2 2.1 +/-0.3 2

4/16/2007 4/23/2007 1.4 +/- 0.2 1.1 +/-0.2 1.1 +/-0.2 3.0 +/- 0.4 2

4/23/2007 4/30/2007 1.6 +/-0.2 1.5 +/- 0.2 1.6 +/-0.2 4.9 +/- 0.5 4/30/2007 5/7/2007 1.5 +/- 0.2 1.2 +/-0.1 1.4 +/-0.2 0.9 +/- 0.2 3.1 +/-0.3 2

5/7/2007 5/14/2007 0.9 +/- 0.2 0.8 +/- 0.2 0.9 +/- 0.2 0.7 +/- 0.2 5/14/2007 5/21/2007 ,1.4 +/-0.2 1.1 +/-0.2 2.7 +/- 0.4 1.5 +/-0.2 2.5 +/- 0.3 5/21/2007 5/28/2007 2.5 +/- 0.3 1.7 +/- 0.2 1.6 +/-0.2 2.4 +/- 0.3 2.1 +/-0.2 5/28/2007 6/4/2007 2.0 +/- 0.2 1.8 +/-0.2 1.8 +/-0.2 2.0 +/- 0.2 2.0 +/- 0.2 2

6/4/2007 6/11/2007 1.7 +/-0.2 1.2 +/- 0.2 1.6 +/-0.2 0.8 +/- 0.1 6/11/2007 6/18/2007 1.6 +/- 0.2 0.9 +/- 0.1 1.0 +/-0.1 1.3 +/-0.2 1.3 +/- 0.2 6/18/2007 6/25/2007 2.3 +/- 0.2 1.6 +/- 0.2 1.4 +/-0.2 1.9 +/-0.2 1.8 +/- 0.2 6/25/2007 7/2/2007 1.7 +/-0.2 1.2 +/-0.2 1.0 +/-0.2 1.6 +/-0.2 1.7 +/- 0.2 1 Control Location 2 Sampler Malfunction; Loss of Data 41

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-6 Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/-2c)

Start Date Stop Date Al A2 A3 A4 A5 1 Entrance Camp Bay Route 765 EOF to Camp Conoy Breeze at Lusby Conoy Siren Rd 7/2/2007 7/9/2007 1.8 +/-0.2 1.3 +/- 0.2 1.3 +/- 0.2 1.8 +/-0.2 1.7 +/- 0.2 7/9/2007 7/16/2007 2.6 +/- 0.3 2.1 +/-0.2 1.9 +/- 0.2 2.3 +/- 0.2 2.4 +/- 0.2 7/16/2007 7/23/2007 2.3 +/- 0.3 1.9 +/- 0.2 2.1 +/-0.2 2.0 +/- 0.2 1.6 +/-0.2 7/23/2007 7/30/2007 1.7 +/-0.2 1.3 +/- 0.2 1.3 +/- 0.2 1.6 +/-0.2 1.9 +/-0.2 7/30/2007 8/6/2007 2.8 +/- 0.3 2.2 +/- 0.2 2.6 +/- 0.2 2.0 +/- 0.2 2.7 +/- 0.2 8/6/2007 8/13/2007 3.0 +/- 0.3 1.8 +/- 0.2 2.3 +/- 0.2 2.6 +/- 0.2 2.4 +/- 0.2 8/13/2007 8/20/2007 2.5 +/- 0.3 2.1 +/-0.2 2.0 +/- 0.2 2.3 +/- 0.2 2.2 +/- 0.2 8/20/2007 8/27/2007 1.5 +/-0.2 1.0 +/- 0.2 1.2 +/- 0.2 1.3 +/-0.2 1.2 +/- 0.2 8/27/2007 9/3/2007 2.5 +/- 0.3 1.9 +/- 0.2 2.4 +/- 0.2 2.3 +/- 0.2 2.3 +/- 0.2 9/3/2007 9/10/2007 2.7 +/- 0.3 2.0 +/- 0.2 1.9 +/-0.2 2.0 +/- 0.2 2.2 +/- 0.3 9/10/2007 9/17/2007 2.7 +/- 0.3 1.6 +/-0.2 1.9 +/- 0.2 2.0 +/- 0.2 2.8 +/- 0.2 9/17/2007 9/24/2007 3.1 +/-0.3 1.7 +/- 0.3 1.8 +/-0.3 2.0 +/- 0.3 1.7 +/- 0.3 9/24/2007 10/1/2007 3.7 +/- 0.3 2.8 +/- 0.2 4.1 +/-0.3 3.0 +/- 0.2 3.5 +/- 0.3 10/1/2007 10/8/2007 3.1 +/-0.3 2.0 +/- 0.2 3.3 +/- 0.3 2.1 +/-0.2 2.2 +/- 0.2 10/8/2007 10/15/2007 2.3 +/- 0.3 2.0 +/- 0.2 2.1 +/-0.3 2.1 +/-0.2 2.0 +/- 0.3 10/15/2007 10/22/2007 2.7 +/- 0.2 2.5 +/- 0.2 2.2 +/- 0.2 2.9 +/-0.2 3.1 +/- 0.3 10/22/2007 10/29/2007 1.5 +/-0.2 1.6 +/-0.2 1.7 +/- 0.2 1.5 +/-0.2 1.8 +/-0.2 10/29/2007 11/5/2007 1.9 +/--0.2 2.0 +/- 0.2 1.7 +/- 0.2 2.1 +/-0.2 2.3+/-0.2 11/5/2007 11/12/2007 1.9 +/-0.2 1.8 +/-0.2 1.8 +/--0.2 2.2 +/- 0.2 2.3 +/- 0.2 11/12/2007 11/19/2007 1.7 +/-0.2 1.9 +/-0.2 1.8 +/- 0.2 4.1 +/-0.4 2.0 +/- 0.2 11/19/2007 11/26/2007 2.0 +/- 0.2 1.9 +/-0.2 1.7 +/- 0.2 3.6 +/- 0.4 2.1 +/-0.3 11/26/2007 12/3/2007 2.7 +/- 0.2 2.5 +/- 0.2 2.4 +/- 0.2 5.4 +/- 0.5 2.8 +/- 0.2 12/3/2007 12/10/2007 1.9 +/-0.2 1.5 +/-0.2 1.7 +/- 0.2 1.8 +/-0.2 1.9 +/-0.2 12/10/2007 12/17/2007 1.5 +/-0.2 1.5 +/--0.2 1.4 +/- 0.2 1.4 +/-0.2 1.6 +/-0.2 12/17/2007 12/24/2007 2.7 +/- 0.2 2.4 +/- 0.2 2.3 +/- 0.2 2.8 +/- 0.3 2.5 +/- 0.2 12/24/2007 12/31/2007 2.1 +/-0.2 1.3 +/-0.2 1.8 +/- 0.2 2.3 +/- 0.2 2.2 +/- 0.2 1 Control Location 2 Sampler Malfunction; Loss of Data 42

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-6 Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +2a)

Start Date Stop Date SFA1 SFA21 SFA3 SFA4 MET Station Visitors NNW of SSE of ISFSI Center ISFSI 1/1/2007 1/8/2007 .0.8 0.1 1.0 +/-0.1 1.1 +/-0.1 1.0+/-0.2 1/8/2007 1/15/2007 1.9 0.2 1.4 +/- 0.2 1.6 +/- 0.2 1.9 +/- 0.2 1/15/2007 1/22/2007 1.0 0.2 0.9 +/- 0.2 0.8 +/-0.1 1.2 +/- 0.2 1/22/2007 1/29/2007 2.0 0.2 1.9 +/-0.2 1.9 +/-0.2 2.1 +/- 0.2 1/29/2007 2/5/2007 2.6 +/- 0.2 2.6 +/- 0.2 2.4 +/- 0.2 2.7 +/- 0.2 2/5/2007 2/12/2007 2.1 +/- 0.2 2.0+/-0.2 2.0 +/- 0.2 2.3 +/- 0.2 2/12/2007 2/19/2007 2.2 +/- 0.2 2.0 +/- 0.2 1.7 +/-0.2 2.2 +/- 0.2 2/19/2007 2/26/2007 1.5 +/- 0.2 1.7 +/-0.2 1.5 +/-0.2 1.7+/-0.2 2/26/2007 3/5/2007 1.1 +/- 0.1 1.0 +/-0.1 1.1 +/-0.1 1.5 +/-0.2 3/5/2007 3/12/2007 3.5 +/- 0.3 2.1 +/-0.2 1.9 +/-0.2 2.8 +/- 0.3 2

3/12/2007 3/19/2007 2.0 +/- 0.2 1.7 +/-0.2 1.5 +/-0.2 3

3/19/2007 3/26/2007 1.7 +/- 0.2 1.8 +/-0.2 1.9+/-0.2 3/26/2007 4/2/2007 1.8 +/- 0.2 1.5 +/-0.2 1.2 +/- 0.2 1.5 +/-0.2 4/2/2007 4/9/2007 1.6 +/-0.2 1.3 +/- 0.2 1.4 +/-0.2 1.3 +/- 0.2 4/9/2007 4/16/2007 0.8 +/- 0.2 0.8 +/- 0.2 0.8 +/- 0.1 1.2+/-0.2 4/16/2007 4/23/2007 1.0 +/-0.2 0.8 +/- 0.2 0.9 +/- 0.1 1.2 +/-0.2 4/23/2007 4/30/2007 1.2 +/- 0.2 1.2 +/-0.2 1.2 +/- 0.2 1.3 +/- 0.2 4/30/2007 5/7/2007 1.3 +/-0.2 1.2 +/-0.1 1.0 +/-0.1 1.1 +/- 0.1 5/7/2007 5/14/2007 0.7 +/- 0.2 4.4 +/- 0.3 0.5 +/- 0.2 0.8 +/- 0.2 5/14/2007 5/21/2007 1.2 +/- 0.2 1.1 +/-0.2 1.2 +/- 0.1 1.2 +/- 0.1 5/21/2007 5/28/2007 2.0 +/- 0.2 2.0 +/- 0.2 1.8 +/-0.2 2.1 +/- 0.2 5/28/2007 6/4/2007 1.7 +/-0.2 1.8 +/-0.2 1.7 +/- 0.2 1.9 +/- 0.2 6/4/2007 6/11/2007 1.3 +/-0.2 1.5 +/- 0.2 1.4 +/- 0.2 1.3 +/- 0.2 6/11/2007 6/18/2007 1.2 +/- 0.2 1.1 +/-0.2 0.9 +/- 0.1 1.0 +/- 0.2 6/18/2007 6/25/2007 1.6 +-/- 0.2 1.7 +/- 0.2 1.5 +/- 0.2 1.6 +/- 0.2 6/25/2007 7/2/2007 1.3 +/- 0.2 1.2 +/- 0.2 1.9 +/- 0.2 1.5 +/- 0.2 Control Location 2 Sampler Malfunction; Loss of Data

'Operator Error; Loss of Data 43

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-6 Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +2a)

Start Date Stop Date SFA1 SFA2 1 S FA3 SFA4 MET Station Visitors NNW of SSE of ISFSI Center ISFSI 7/2/2007 7/9/2007 1.7 +/- 0.2 1.8 +/-0.2 1.8 +/-0.2 1.9 +/- 0.2 7/9/2007 7/16/2007 2.4 +/- 0.2 2.3 +/- 0.2 2.2 +/- 0.2 2.5 +/- 0.2 7/16/2007 7/23/2007 1.6 +/-0.2 1.5 +/- 0.2 1.9 +/- 0.2 1.7 +/- 0.2 7/23/2007 7/30/2007 1.7 +/-0.2 1.5 +/- 0.2 1.7 +/-0.2 1.7 +/- 0.2 7/30/2007 8/6/2007 2.7 +/- 0.2 2.8 +/- 0.2 2.3 +/- 0.2 2.9 +/- 0.2 8/6/2007 8/13/2007 2.4 +/- 0.2 2.5 +/- 0.2 2.6 +/- 0.2 2.2 +/- 0.2 8/13/2007 8/20/2007 2.3 +/- 0.3 2.1 +/-0.2 2A1 +/- 0.2 2.3 +/- 0.2 8/20/2007 8/27/2007 1.2 +/- 0.2 1.5 +/-0.2 1.2 +/- 0.2 1.2 +/- 0.2 8/27/2007 9/3/2007 2.0 +/- 0.2 2.3 +/- 0.2 2.2 +/- 0.2 2.2 +/- 0.2 9/3/2007 9/10/2007 2.3 +/- 0.3 2.4 +/- 0.3 2.2 +/- 0.2 2.1 +/-0.2 9/10/2007 9/17/2007 1.7 +/- 0.2 1.8 +/-0.2 1.5 +/-0.2 1.6 +/- 0.2 9/17/2007 9/24/2007 2.0 +/- 0.3 1.6 +/-0.3 1.9 +/-0.2 1.7 +/- 0.3 9/24/2007 10/1/2007 3.5 +/- 0.3 3.3 +/- 0.3 3.1 +/-0.2 3.7 +/- 0.3 10/1/2007 10i8/2007 2.3 +/-0.2 2.5 +/- 0.2 2.3 +/- 0.2 2.3 +/- 0.2 10/8/2007 10/15/2007 2.0 +/- 0.3 2.2 +/- 0.3 2.3 +/- 0.3 2.1 +/-0.2 10/15/2007 10/22/2007 2.9 +/- 0.3 2.9 +/- 0.3 2.7 +/- 0.3 2.9 +/- 0.3 10/22/2007 10/29/2007 1.5 +/-0.2 1.8 +/-0.2 1.7 +/-0.2 1.6 +/- 0.2 10/29/2007 11/5/2007 2.3 +/- 0.2 2.2 +/- 0.2 2.4 +/- 0.2 2.4 +/- 0.2 11/5/2007 11/12/2007 2.8 +/- 0.2 2.1 +/-0.2 2.4 +/- 0.2 2.4 +/- 0.2 11/12/2007 11/19/2007 2.5 +/- 0.3 2.2 +/- 0.2 2.8 +/- 0.2 2.0 +/- 0.2 11/19/2007 11/26/2007 5.1 +/-0.5 2.4 +/- 0.3 2.4 +/- 0.2 2.2 +/-0.2 11/26/2007 12/3/2007 5.6 +/- 0.4 3.0 +/' 0.2 3.1 +/-0.2 2.8 +/- 0.2 12/3/2007 12/10/2007 1.7 +/-0.2 2.0 +/- 0.2 2.0 +/- 0.2 1.9 +/- 0.2 12/10/2007 12/17/2007 1.3 +/-0.2 2.0 +/- 0.2 1.9 +/-0.2 1.8 +/- 0.2 12/17/2007 12/24/2007 2.4 +/- 0.2 3.2 +/- 0.3 2.6 +/- 0.2 2.3 +/- 0.2 12/24/2007 12/31/2007 2.5 +/- 0.2 2.3 +/- 0.2 1.8 +/-0.2 2.0 +/- 0.2 1 Control Location 44

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-7 Concentration of Gamma Emittersin Air Particulates (Results in units of 10-3 pCi/mr3

+/-2a)

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

A *k "*

1/15/2007

"* *k 2/15/2007 -*

I -* *t 3/15/2007 "* */

)

4/15/2007 *k */ "*

5/15/2007 "* *k

/ "* *k 7/15/2007 *k

1 *t 8/15/2007 9/15/2007

k 10/15/2007 11/15/2007 12/15/2007 Control Location

All Non-Natural Gamma Emitters <MDA Sample SFAI SFA21 SFA3 SFA4 Date MET Station Visitors Center NNW of ISFSI SSE of IsFSI 1/15/2007 *k 2/15/2007 * *

k 3/15/2007 * *

t 4/15/2007 * * *

k 5/15/2007 * * *

/

7/15/2007 * *

9/15/2007 * *

k 10/15/2007 * *

11/15/2007 * *

12/15/2007 * *

Control Location All Non-Natural Gamma Emitters <MDA 45

January 1 - December 31, 2007 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 Sample Type Cs-1 37 Gamma Date Emitters Ibl 6/25/2007 Squash Bay Breeze Rd 7/23/2007 Cabbage "*

9/30/2007 Squash 25 +/- 20

k Ib2 6/28/2007 Cabbage *k I

Bay Breeze Rd 7/23/2007 Collards !

9/30/2007 Tree Leaves *k Ib3 6/28/2007 Brussels sprouts Bay Breeze Rd 7/23/2007 Broccoli *k 9/30/2007 Tree Leaves

k Ib4 6/25/2007 Squash Camp Conoy 7/23/2007 Cabbage Entrance 9/30/2007 Cauliflower Ib5 6/28/2007 Brussels sprouts Camp Conoy 7/23/2007 Collards Entrance 9/30/2007 Tree Leaves 112 23 Ib6 6/28/2007 Collards *k Camp Conoy 7/23/2007 Cauliflower Entrance 9/30/2007 Collards

k

k Ib72 6/25/2007 Squash EOF 7/23/2007 Cabbage 9/30/2007 Cauliflower 2

Ib8 6/28/2007 Tree Leaves EOF 7/23/2007 Cauliflower 9/30/2007 Cabbage 2

Ib9 6/28/2007 Tree Leaves EOF 7/23/2007 Broccoli

9/30/2007 Collards

' This isotope <MDA 2 Control Location

All Non-Natural Gamma Emitters <MDA 46

January 1 - December 31, 2007 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) +/-2cr)-

SAMPLE CODE Sample Cs-1 37 Gamma Emitters Date I

SFbl 3/12/2007 MET Station 5/31/2007 9/23/2007 19+/- 16 12/18/2007 SFb2 2 3/12/2007 Visitor's Center 5/31/2007 9/23/2007 12/18/2007

k SFb3 3/12/2007 NNW of ISFSI 5/31/2007 9/23/2007 12/18/2007 27 +/- 24 SFb4 3/12/2007 *t SSE of ISFSI 5/31/2007 "*

9/23/2007 12/18/2007 *k 1

SFb5 3/12/2007

k On Site before 5/31/2007 15,+/- 12 Entrance to Camp Conoy 9/23/2007 43 +/- 26 12/18/2007 12 This isotope <MDA Control Location

All Non-Natural Gamma Emitters <MDA 47

January 1 - December 31, 2007 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) +/-2a)

SAMPLE CODE Sample Cs-1 37 Gamma Emitters Date I

SFS1 3/12/2007 *t MET station 5/31/2007 *t 9/23/2007 *t 12/18/2007 SFS2 2 3/12/2007 153 +/- 53 Visitors Center 5/31/2007 143 +/- 42 9/23/2007 12/18/2007 103 +/- 39 SFS3 3/12/2007 727 +/- 97 NNW of ISFSI 5/31/2007 563 +/- 103 9/23/2007 637 110 12/18/2007 502 + 91 SFS4 3/12/2007 SSE of ISFSI 5/31/2007 9/23/2007 515+/- 89 12/18/2007 SFS5 3/12/2007 743 +/- 133 *k

k Entrance to Camp 5/31/2007 165 +/- 50

(

Conoy 9/23/2007 413 56 12/18/2007 439 + 71 This isotope <MDA 2 Control Location

All Non-Natural Gamma Emitters <MDA 48

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-10 Typical MDA Ranges for Gamma Spectrometry

- Vegetation Soil Particulates Selected Bay Water Fish Shellfish Shoreline -Vegetation Soil Particulates3 3

Nuclides pCi/I pCi/kg pCi/kg pCi/kg pCi/kg pCi/kg 10- pCi/m Na-22 1.6-3.8 21-29 18 - 30 28 -29 16-37 33 - 95 1.3- 3.4 Cr-51 12-40 160- 166 118-176 208-213 14-164 203-486 13 - 39 Mn-54 1.4-3.2 16 -20 15 -22 26- 30 13 - 28 32-81 1.2-6.2 Co-58 1.5-4.0 20-23 16-26 28 - 32 13- 26 28 - 79 1.4- 3.4 Fe-59 3.5-11 53- 74 36 -65 60-77 28 - 69 65-174 3.7-8.2 Co-60 1.5-3.7 18 - 25 18 - 26 27-39 15 - 35 23-97 1.3- 3.3 Zn-65 3.3-7.9 46-62 36 - 57 69-97 32 - 73 67-238 3.0-6.9 Nb-95 1.7-5.8 25-31 20 - 35 34-40 13-27 34 -93 2.1-5.0 Zr-95, 2.8-6.9 35-44 29-43 45-62 21-48 53-141 2.1 -6.4 Ru-1 06 12-26 131-149 124-185 224-287 108-239 264-643 10 - 25 Ag-1 10m 1.2-2.9 15-18 15-18 21 -31 11-25 29 -88 0.1 -2.6 Te-129m 18 -60 247-280 192-284 321 -367 135-281 346-855 19-55 1

1-131 2.4 - 49 99- 121 30-89 50-52 11 - 37 32.7- 179 Cs-1 34 1.2 -2.6 14-17 13-19 24-34.5 11 - 24 27 - 94 1.0-2.4 Cs-1 37 1.2-3.0 15-18 15 - 34 25 - 30 1.5-26 27-72 1.0-2.8 Ba-140 7.3-66 174 - 208 75-184 138-150 41 -109 112-430 12 - 84 La-140 3.2-29 49 - 74 75 - 75 17-51 60- 138 8.7- 19 Ce-144 7.1 - 12 45-49 42 -49 101 -111 49 -86 110-245 2.8-8.2 3

The MDA range for 1-131 on a Silver Zeolite cartridge is typically 4.16 x 10 to 3.40 x 10-2.

49

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-11 Typical LLDs for Gamma Spectrometry Selected Bay Water Fish Shellfish Sediment Particulate Precipitation Vegetation Soil Well Water 3 3 Nuclides pCi/I pCi/kg pCi/kg pCi/kg 10" pCi/m pCi/I pCi/Kg pCi/Kg pCi/I Na-22 2.9 22 22 24 2.9 2.9 35 24 2.9 Cr-51 17 88 88 110 12 17 162 110 17 Mn-54 2.4 17 17 18 2.1 2.4 27 18 2.4 Co-58 2.4 16 16 17 2.0 2.4 25 17 2.4 Fe-59 5.2 37 37 38 4.6 5.2 60 38 5.2 Co-60 2.8 22 22 21 2.7 2.8 33 21 2.8 Zn-65 5.6 23 23 54 2.8 5.6 66 54 5.6 Nb-95 2.2 15 15 18 1.9 2.2 25 18 2.2 Zr-95 3.8 27 27 29 3.3 3.8 44 29 3.8 Ru-106 20 135 135 146 17 20 223 146 20 Ag-110m 2.1 14 14 16 1.8 2.1 25 16 2.1 Te-129m 26 149 149 180 20 26 265 180 26 1-131 2.0 11 11 14 1.5" 2.0 20 14 2.0 Cs-134 2.2 15 15 20 1.9 2.2 24 20 2.2 Cs-137 2.3 15 15 17 1.8 2.3 27 17 2.3 Ba-140 7.3 48 48 54 6.1 7.3 80 54 7.3 La-140 4.1 26 26 25 3.4 4.1 41 25 4.1 Ce-144 12 43 43 75 5.5 12 101 75 12

The LLD for 1-131 measured on a Silver Zeolite cartridge is 2.0 x10"3 pCi/m 3.

50

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B-12 Direct Radiation (Results in Units of mR/90 days +/-2a)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter DR01 On Site, alonq Cliffs 12.28 +/- 1.05 14.23 +/- 4.18 12.60 +/- 0.96 14.28 +/- 1.12 DR02 Route 765, Auto Dump 10.48 +/- 0.37 10.40 +/- 0.80 10.15 +/- 0.92 11.29 +1- 0.97 DR03 Route 765, Giovanni's 10.69 +/- 0.66 10.12 +/- 1.05 10.02+/- 1.24 11.61 +/- 1.29 Tavern DR04 Route 765, across from 12.12 +/- 0.77 11.72 +1- 0.94 12.11 +/- 1.18 13.53 +/- 0.37 White Sands Drive.

DR05 Route 765, John's Creek 11.50 +/- 0.83 11.15 +/-0.97 11.84 +/- 0.93 13.39 +/- 1.34 DR06 Route 765 at Lusby 10.14 +/- 0.51 9.57 +/- 0.58 9.29 +/- 0.65 11.02+/- 1.06 DR07 Entrance to Camp Conoy 10.86 +/- 1.30 11.13 +/- 0.56 9.61 +/- 0.20 11.26+/- 1.36 DR08 Camp Conoy Rd at 14.31 +/- 2.24 14.01 +/- 1.23 14.48 +/- 0.79 16.05+/- 1.67 Emergency Siren DR09 Bay Breeze Rd 10.97 +/- 0.58 10.62 +/- 0.79 10.62 +1-, 0.71 12.29 +/- 0.45 DR10 Calvert Beach Rd and 10.58 +/- 0.56 9.91 +/- 0.70 10.02 +/- 0.71 11.60 +/- 1.19 Decatur Street DR11 Dirt road off Mackall & 10.91 +/- 0.95 10.68 +/- 0.45 10.28 +/- 0.76 11.87 +/- 2.32 Parren Rd DR12 Mackall & Bowen Rds 10.37 +/- 1.14 10.49 +/- 0.91 9.76 +/- 0.74 11.79 +/- 1.00 51

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table B continued Direct Radiation (Results.in Units of mR/90 days +/-2o)

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter DR13 Mackall Rd, near 11.27+/- 1.08 11.46 +/- 0.25 11.06 +/- 1.38 12.99 +- 0.36 Wallville DR14 Rodney Point 12.43 +/- 0.62 12.70 +/- 0.66 12.87 +/- 1.01 14.76 +- 0.58 DR15 Mill Bridge & Turner Rds 10.99 +/- 0.88 11.37 +/- 1.34 11.34 +/- 0.67 13.41 +/- 0.35 DR16 Across from Appeal 10.69 +/- 1.45 10.43 +/- 0.57 10.13 +/- 1.07 11.73 +- 0.40 School DR17 Cove Point & Little Cove 12.19 +/- 0.94 12.16 +/- 1.07 11.81 +/- 0.86 13.79 +- 1.15 Point Rds DR18 Cove Point 9.38 +/- 0.64 9.33 +/- 0.83 8.82 +/- 0.58 10.66 +- 0.54 DR19 Long Beach 9.95 +/- 0.45 10.63 +/- 0.50 10.59 +/- 0.65 12.36 +- 1.29 DR20 On site, near shore 12.70 +/- 1.32 12.41 +/- 0.36 12.26 +/- 1.30 14.58 +- 0.69 DR21' EOF 11.37 +/- 0.78 11.74 +/- 1.21 11.29 +/- 0.40 13.52 +/- 0.67 2

DR22' Solomons Island 10.49 +/- 0.28 9.84 +/- 1.52 11.71 +/- 0.88 DR23' Taylors Island 14.07 +/- 0.86 14.79 +/- 1.63 16.10 +/- 1.81 18.22 +- 0.33 DR30 MET Station 13.38 +/- 0.75 14.97 +/- 1.61 16.04 +/- 1.27 18.13 +- 2.09 SFDR01 SW of ISFSI 16.21 +/- 1.84 16.47 +/- 1.20 16.33 +/- 1.45 19.34 +- 1.77 SFDR02 NNW of ISFSI 20.08 +/- 2.53 19.94I+/- 2.04 20.26 +/- 2.07 22.42 +- 2.03

' Control Location 2 Missing Data 52

.January 1 - December 31, 2007 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 SFDR03 North of ISFSI 37.88 +/- 8.28 36.70 +/- 5.77 34.57 +/- 6.61 39.57 +/- 4.75 SFDR04 NE of ISFSI 31.78 +/- 6.26 30.81 +/- 2.74 29.93 +/- 4.04 31.74 +/- 2.06 SFDR05 East of ISFSI 18.88 +/- 3.04 18.04 +/- 2.43 19.41 +/- 2.09 19.09 +/- 2.05 SFDR06 ESE of ISFSI 17.38 +/- 1.19 15.55 +/- 0.46 15.66 +/- 1.01 17.43 +/- 1.81 SFDR07' Visitors Center 12.41 +/- 1.17 14.07 +/- 1.40 12.04 +/- 0.55 13.52 +/- 1.51 SFDR08 NNW of ISFSI 31.82 +/- 3.61 28.62 +/- 1.90 30.43 +/- 5.74 34.35 +/- 3.09 SFDR09 SSE of ISFSI 27.89 +/- 2.04 20.30 +/- 1.88 14.16 +/- 1.18 16.29 +/- 0.48 SFDR10 NW of ISFSI 45.34 +/- 10.77 33.54 +/- 5.13 36.90 +/- 9.02 37.17 +/- 1.40 SFDR11 WNW ISFSI 30.98+/- 2.12 28.16 +/- 4.17 25.08 +/- 2.78 28.22 +/- 1.60 SFDR12 WSW of ISFSI 30.58 +/- 5.38 29.81 +/- 5.78 28.75 +/- 7.06 34.00 +/- 8.56 SFDR13 South of ISFSI 29.64 +/- 4.75 24.84 +/- 5.68 21.95 +/- 5.50 23.44 +/- 4.15 SFDR14 SE of ISFSI 31.62 +/- 3.34 21.47 +/- 2.53 15.26 +/- 2.37 17.901+/- 3.71 SFDR15 ENE of ISFSI 22.22 +/- 1.26 20.42 +/- 3.30 20.60 +/- 3.21 20.18 +/- 3.71 SFDR16 SSW of ISFSI 32.24 +/- 2.94 31.35+/- 6.50 32.22 +/- 5.72 32.20 +/- 4.11 SFDR17 NNE of ISFSI 37.44 +/- 5.85 36.39 +/- 3.48 35.48 +/- 4.01 42.20 +/- 3.44 SFDR18 West of ISFSI 39.31 +/- 7.86 42.22 +/- 9.55 41.05 +/- 7.48 45.97 +/- 4.45

' Control Location 53

January 1 - December 31, 2007 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 Laboratory's results contained in Table C-I generally agree with the intercomparison laboratory's results within the range of +/-2 Yof each other. In addition, all the sets of intercomparison results in the table are in full agreement when they were further evaluated using the NRC Resolution Test Criteria'. The uncertainties for the Constellation Energy Laboratory's results and Analytics' results are +2a while the ERA laboratory's uncertainty is based on USEPA guidelines2 .

All the results contained in Table C-2 agree within the range of +/-2 aT 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 five samples involving Cs-137 results: an air filter composite sample from A3 collected 5/15/2007; a soil sample from SFA4 collected 5/31/2007; a shoreline sample from Wbl collected 5/31/2007; a vegetation sample from IbI collected 7/23/2007; and a vegetation sample from SFb3 collected 12/18/2007.

In all five cases low levels of Cs-137 were observed in only one of the results of the comparison set and not observed in the other two. These minor discrepancies, occurring very close to or below the analyses MDA's, are most probably due to counting statistical fluctuations and/or the non-homogeneous nature of the sample-splitting process. Other samples whose nature generally precludes sample splitting are marked "**" in the Split Analysis column.

'NRC Inspection Manual, Inspection Procedure 84750, March 15, 1994 2 National Standards for Water Proficiency Testing Studies Criteria Document, December 1998 54

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C-1 Results of Participation in Cross Check Programs Sample Sample Type Isotope Reported Cross Check Date and Units Observed Laboratory's Lab Results 1 Results' 1/08/07 Water-pCi/L Ba-133 90+/-10 91+/-15 Co-60 104+/-9 101+/-9 Cs-1 34 83+/-7 89+/-9 Cs-1 37 233+/-15 231+/-20 Zn-65 381+/-33 350+/-60 3/22/07 Milk-pCi/L 1-131 85+/-29 85+/-3 Cs-1 34 99+/-13 112+/-4 Cs-137 249+/-28 234+/-8 Ce-141 309+/-28 297+/-10 Cr-51 227+/-109 245+/-8 Mn-54 197+/-27 182+/-6 Co-58 106+/-22 100+/-3 Fe-59 111+/-30 106+/-4 Co-60 162+/-17 152+/-5 Zn-65 1075+/-80 1000+/-33 3/22/07 Charcoal 1-131 80+/-5 70+/-2 Cartridge-pCi 3/22/07 Water-pCi/L Gross I3 99+/-5 100+/-3 4/09/07 Water-pCi/L 1-131 19+/-7 19+/-5 6/14/07 Water-pCi Gross 1 147+/-2 148+/-5 1 See discussion at the beginning of the Appendix 55

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C Continued Results of Participation in Cross Check Programs Sample Sample Type Isotope Reported Cross Check Date and Units Observed Laboratory's Lab Results 1 Results' 6/14/07 Water-pCi/L Cs-1 34 172+/-7 194+/-6 Cs-1 37 138+/-11 135+/-5 Ce-141 145+/-36 160+/-5 Co-58 171+/-15 159+/-5 Fe-59 145+/-26 134+/-4 Cr-51 489+/-191 411+/-14 Co-60 202+/-8 191+/-6 Mn-54 144+/-10 133+/-4 Zn-65 283+/-23 268+/-9 6/14/07 Filter-pCi/filter Ce-1 41 121+/-24 114+/-4 Cr-51 286+/-130 293+/-10 Cs-1 34 118+/-6 138+/-5 Cs-137 100+/-8 97+/-3 Mn-54 108+/-9 95+/-3 Fe-59 103+/-29 95+/-3 Zn-65 230+/-22 191+/-6 Co-60 143+/-8 136+/-5 Co-58 122+/-14 113+/-4 7/06/07 Water-pCi/L Ba-133 19+/-7 ý19+/-9 Cs-134 67+/-6 69+/-9 Cs-137 64+/-9 61+/-9 Zn-65 113+/-15 55+/-9 Co-60 34+/-5 34+/-8 7/06/07 Water-pCi/L Gross 13 7.6+/-0.4 11.5+/-9.0 9/13/07 Filter-pCi/filter Gross P 82+/-2 87+/-1 1 See discussion at the beginning of the Appendix 56

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C Continued Results of Participation in Cross Check Programs Sample Sample Type Isotope Reported Cross Check Date and Units Observed Laboratory's Lab Results 1 Results' 9/18/07 Filter-pCi/filter Am-*241 31+/-22 21+/-8 Cs- 134 859+/-22 922+/-208 Cs- 137 916+/-23 831+/-269 Co -60 562+/-14 505+/-126 Zn -65 1554+/-51 1290+/-500

,10/06/07 Water-pCi/L I-131 29+/-2 29+/-5 12/06/07 Charcoal I-131 79+/-5 74+/-2 Cartridge-pCi 12/06/07 Milk-pCi/L I-131 85+/-21 61+/-2 Ce- 141 157+/-16 141+/-5 Cr--51 678+/-108 512+/-18 Cs- 134 124+/-11 137+/-5 Cs- 137 181+/-17 166+/-6 Co -58 190+/-16 174+/-6 Mn-54 208+/-16 190+/-6 Fe -59 172+/-19, 148+/-5 Zn -65 264+/-30 234+/-8 Co -60 224+/-13 211+/-8 12/06/07 Filter-pCi/filter Ce- 141 143+/-7 117+/-4 Cr--51 535+/-60 425014 Cs- 134 96+/-6 114+/-4 Cs- 137 148+/-10 138+/-5 Co -58 152+/-12 144+/-5 Mn-54 180+/-12 157+/-6 Fe -59 148+/-14 123+/-4 Zn -65 238+/-30 194+/-6 Co -60 190+/-10 175+/-6 12/06/07 Water-pCi/L Gro ss P3 185+/-3 200+/-7 1 See discussion at the beginning of the Appendix 57

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C-2 Results of Quality Assurance Program Sample Type Sample Type of Original Replicate Split And Location Date Analysis Analysis Analysis Analysis 10-2 pCi/m 3 Air lodine-A3 1/08/07 1-131 <MDA <MDA Air Iodine-A4 1/08/07 1-131 <MDA <MDA Air Filter -Al 1/08/07 Beta 0.7+/-0.1 0.8+/-0.1 Air Filter -A2 1/08/07 Beta 1.0+/-0.2 1.0+/-0.2 Air Filter -A3 1/08/07 Beta 0.7+/-0.1 0.7+/-0.1 Air Filter -A4 1/08/07 Beta 1.0+/-0.2 1.0+/-0.2 Air Filter -A5 1/08/07 Beta 0.9+/-0.1 0.9+/-0.1 Air Filter -SFA1 1/08/07 Beta 0.8+/-0.1 0.9A0.1 Air Filter -SFA2 1/08/07 Beta 1.0+/-0.1 0.9+/-0.1 Air Filter -SFA3 1/08/07 Beta 1.1+/-0.1 1.1+/-0.1 Air Filter -SFA4 1/08/07 Beta 1.0+/-0.2 0.9+/-0.1 3

10-2 pCi/m Air Filter-Al 2/05/07 Beta 2.5+/-0.2 2.5+/-0.2" Air Filter-A2 2/05/07 Beta 2.5+/-0.2 2.4+/-0.2 Air Filter-A3 2/05/07 Beta 2.4+/-0.2 2.3+/-0.2 Air Filter-A4 2/05/07 Beta 2.7+/-0.3 2.9+/-0.2 Air Filter-A5 2/05/07 Beta 2.3+/-0.2 2.6+/-0.2 Air Filter-SFA1 2/05/07 Beta 2.6+/-0.2 2.7+/-0.2 Air Filter-SFA2 2/05/07 Beta 2.6+/-0.2 2.5+/-0.2 Air Filter-SFA3 2/05/07 Beta 2.4+/-0.2 2.6+/-0.2 Air Filter-SFA4 2/05/07 Beta 2.7+/-0.2 2.5+/-0.2 Air Iodine-Al 2/05/07 1-131 <MDA <MDA Air Iodine-A2 2/05/07 1-131 <MDA <MDA pCi/L Bay Water-Wa2 2/28/07 Gamma <MDA <MDA <MDA

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

58

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C Continued Results of Quality Assurance Program Sample Type Sample Type of Original Replicate Split And Location Date Analysis Analysis Analysis Analysis 3

10-2 pCi/m Air Filter-Al 3/05/07 Beta 1.1+/-0.2 1.2+/-0.2 Air Filter-A2 3/05/07 Beta 1.4+/-0.2 1.4+/-0.2 Air Filter-A3 3/05/07 Beta 1.2+/-0.2 1.1+/-0.2 Air Filter-A4 3/05/07 Beta 1.5+/-0.2 1.5+/-0.2 Air Filter-A5 3/05/07 Beta 1.0+/-0.1 1.0+/-0.1 Air Filter-SFAl 3/05/07 Beta 1.1+/-0.1 1.1+/-0.1 **

Air Filter-SFA2 3/05/07 Beta 1.0+/-0.1 1.2+/-0.2 **

Air Filter-SFA3 3/05/07 Beta 1.1+/-0.1 1.1+/-0.2 **

Air Filter-SFA4 3/05/07 Beta 1.5+/-0.2 1.4+/-0.2 Air Iodine-A3 3/05/07 1-131 <MDA < MDA **{q Air Iodine-A4 3/05/07 1-131 < MDA < MDA pCi/Kg Oysters-la3 3/28/07 Gamma <MDA <MDA <MDA pCi/L Bay Water-Wa2 4/27/07 Cs-137 <MDA <MDA MDA 3

102 pCi/m Air Filter-Al 4/09/07 Beta 1.2+/-0.2 1.3+/-0.2 Air Filter-A2 4/09/07 Beta 1.3+/-0.2 1.2+/-0.2 **

Air Filter-A3 4/09/07 Beta 1.5+/-0.2 1.6+/-0.2 Air Filter-A4 4/09/07 Beta 2.2+/-0.3 2.4+/-0.3 **

Air Filter-A5 4/09/07 Beta 1.4+/-0.2 1.2+/-0.2 **

Air Filter-SFA1 4/09/07 Beta 1.6+/-0.2 1.6+/-0.2 **

Air Filter-SFA2 4/09/07 Beta 1.3+/-0.2 1.5+/-0.2 Air Filter-SFA3 4/09/07 Beta 1.4+/-0.2 1.2+/-0.2 Air Filter-SFA4 4/09/07 Beta 1.3+/-0.2 1.4+/-0.2 **

3 10-2 pCi/m

- t"/

Air Iodine-Al 4/09/07 1-131 <MDA <MDA

"**/

Air Iodine-A2 4/09/07 1-131 <MDA <MDA

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

59

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C Continued Results of Quality Assurance Program Sample Type Sample Type of Original Replicate Split And Location Date Analysis Analysis Analysis Analysis 3

10-2 pCi/m Air Filters-Al 5/15/07 Gamma <MDA <MDA <MDA Air Filters-A2' 5/15/07 Gamma <MDA <MDA <MDA Air Filters-A3 5/15/07 Cs-137 1 <MDA 2+/-1 <MDA Air Filters-A4 5/15/07 Gamma <MDA <MDA <MDA Air Filters-A5 5/15/07 Gamma <MDA <MDA <MDA Air Filters-SFA1 5/15/07 Gamma <MDA <MDA <MDA Air Filters-SFA2 5/15/07 Gamma <MDA <MDA <MDA Air Filters-SFA3 5/15/07 Gamma <MDA <MDA <MDA Air Filters-SFA4 5/15/07 Gamma <MDA <MDA <MDA 3

10-2 pCi/m Air Iodine-A3 5/07/07 1-131 <MDA <MDA **

Air Iodine-A4 5/07/07 1-131 <MDA <MDA **

Air Filter-Al 5/07/07 Beta 1.5+/-0.2 1.3+/-0.2 **

Air Filter-A2 5/07/07 Beta 1.2+/-0.1 1.1+/-0.1 **

Air Filter-A3 5/07/07 Beta 1.4+/-0.2 1.1+/-0.2 **

Air Filter-A4 5/07/07 Beta 0.9+/-0.2 1.0+/-0.2 **

Air Filter-A5 5/07/07 Beta 3.1+/-0.3 2.6+/-0.3 **

Air Filter-SFA1 5/07/07 Beta 1.3+/-0.2 1.0+/-0.1 **

Air Filter-SFA2 5/07/07 Beta 1.2+/-0.1 1.1+/-0.1 **

Air Filter-SFA3 5/07/07 Beta 1.0+/-0.1 1.0+/-0.1 **

Air Filter-SFA4 5/07/07 Beta 1.1+/-0.1 1.0+/-0.1 **

pCi/Kg Soil-SFS3 5/31/07 Cs-137 563+/-103 672+/-101 708+/-99 Soil-SFS4 5/31/07 Cs-137 1 <MDA <MDA 101+/-32 Vegetation-SFb3 5/31/07 Gamma <MDA <MDA <MDA Vegetation-SFb4 5/31/07 Gamma <MDA <MDA <MDA

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

See discussion at the beginning of the Appendix.

60

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C Continued Results of Quality Assurance Program Sample Type Sample Type of Original Replicate Split And Location Date Analysis Analysis Analysis Analysis

__________ pC i/Kg Shoreline Wbl 5/31/07 Cs-137 1 <MDA <MDA 336+/-344 3

10-2 pCi/m Air Iodine-SFA2 6/04/07 1-131 <MDA <MDA **'A Air Iodine-SFA3 6/04/07 1-131 <MDA <MDA 3

10-2 pCi/m Air Filter-Al 6/04/07 Beta 2.0+/-0.2 2.1+/-0.2 Air Filter-A2 6/04/07 Beta 1.8+/-0.2 1.7+/-0.2 Air Filter-A3 6/04/07 Beta 1.8+/-0.2 1.9+/-0.2 Air Filter-A4 6/04/07 Beta 2.0+/-0.2 2.2+/-0.2 Air Filter-A5 6/04/07 Beta 2.0+/-0.2 2.2+/-0.2 Air Filter-SFA1 6/04/07 Beta 1.7+/-0.2 1.7+/-0.2 Air Filter-SFA2 6/04/07 Beta 1.8+/-0.2 1.9+/-0.2 Air Filter-SFA3 6/04/07 Beta 1.7+/-0.2 2.0+/-0.2 Air Filter-SFA4 6/04/07 Beta 1.9+/-0.2 1.8+/-0.2 mR/90 Days DR05 6/29107 TLD 11.15+/-0.97 11.94+/-1.49. **

DR06 6/29/07 TLD 9.58+/-0.58 10.06+/-1.32 DR07 6/29/07 TLD 11.13+/-0.56 11.72+/-1.17 DR08 6/29/07 TLD 14.01+/-1.23 14.60+/-0.71 DR09 6/29/07 TLD 10.62+/-0.79 10.94+/-1.58 DR10 6/29/07 TLD 9.91+/-0.70 10.56+/-0.65 DR11 6/29/07 TLD 10.68+/-0.45 10.96+/-1.42 SFDR14 6/29/07 TLD 21.47+/-2.54 24.08+/-1.47 SFDR15 6/29/07 TLD 20.42+/-3.30 23.38+/-5.16 DR29 6/29/07 TLD 21.49+/-1.87 14.11+/-1.99 DR31 6/29/07 TLD 14.88+/-2.17 15.26+/-1.32

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

1 See discussion at the beginning of the Appendix.

61

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C Continued Results of Quality Assurance Program Sample Type Sample Type of Original Replicate Split And Location Date Analysis Analysis Analysis Analysis 3

10-2 pCi/m Air Filter-Al 7/09/07 Beta 1.8+/-0.2 2.0+/-0.2 **

Air Filter-A2 7/09/07 Beta 1.3+/-0.2 1.2+/-0.2 **

Air Filter-A3 7/09/07 Beta 1.3+/-0.2 1.3+/-0.2 **

Air Filter-A4 7/09/07 Beta 1.8+/-0.2 2.0+/-0.2 **

Air Filter-A5 7/09/07 Beta 1.7+/-0.2 1.7+/-0.2 **

Air Filter-SFA1 7/09/07 Beta 1.7+/-0.2 1.6+/-0.2 **

Air Filter-SFA2 7/09/07 Beta 1.8+/-0.2 1.8+/-0.2 Air Filter-SFA3 7/09/07 Beta 1.8+/-0.2 1.8+/-0.2 **

Air Filter-SFA4 7/09/07 Beta 1.9+/-0.2 1.8+/-0.2 **

Air Iodine-A3 7/09/07 1-131 <MDA <MDA **

Air Iodine-A4 7/09/07 1-131 <MDA <MDA **

pCi/kg Vegetation-IbI 7/23/07 Cs-137 1 <MDA 18+/-11 <MDA Vegetation-lb3 7/23/07 Gamma <MDA <MDA <MDA Vegetation-lb4 7/23/07 Gamma <MDA <MDA <MDA Vegetation-lb5 7/23/07 Gamma <MDA <MDA. <MDA Vegetation-lb6 7/23/07 Gamma <MDA <MDA <MDA Vegetation-lb7 7/23/07 Gamma <MDA <MDA <MDA Vegetation-lb8 7/23/07 Gamma <MDA <MDA <MDA Vegetation-lb9 7/23/07 Gamma <MDA <MDA <MDA 3

10-2 pCi/m Air Filter-Al 8/06/07 Beta 2.8+/-0.3 2.7+/-0.3 **

Air Filter-A2 8/06/07 Beta 2.2+/-0.2 2.3+/-0.2 **

Air Filter-A3 8/06/07 Beta 2.6+/-0.2 2.2+/-0.2 **

Air Filter-A4 8/06/07 Beta 2.0+/-0.2 2.1+/-0.2 **

Air Filter-A5 8/06/07 Beta 2.7+/-0.2 2.5+/-0.2 **

Air Filter-SFA1 8/06/07 Beta 2.7+/-0.2 2.4+/-0.2 **

Air Filter-SFA2 8/06/07 Beta 2.8+/-0.2 2.6+/-0.2 **

Air Filter-SFA3 8/06/07 Beta 2.3+/-0.2 2.1+/-0.2 **

Air Filter-SFA4 8/06/07 Beta 2.9+/-0.2 2.7+/-0.2 **

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

See discussion at the beginning of this Appendix.

62

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C Continued Results of Quality Assurance Program Sample Type Sample Type of Original Replicate Split And Location Date Analysis Analysis Analysis Analysis 3

10-2 pCi/m Air Iodine-Al 8/06/07 1-131 <MDA <MDA **

Air Iodine-A2 8/06/07 1-131 <MDA <MDA **

pCi/kg Fish-lal 8/22/07 Gamma <MDA <MDA <MDA Oysters-la3 8/22/07 Gamma <MDA <MDA <MDA pCi/L Bay Water-Wal 8/31/07 Gamma <MDA <MDA <MDA pCi/kg Vegetation-lb4 8/13/07 Gamma <MDA <MDA <MDA Vegetation-lb6 8/13/07 Gamma <MDA <MDA <MDA 3

10-2 pCi/m Air Iodine-A3 9/10/07 1-131 <MDA <MDA **

Air Iodine-A4 9/10/07 1-131 <MDA <MDA **

Air Filter-Al 9/10/07 Beta 2.7+/-0.3 2.5+/-0.3 Air Filter-A2 9/10/07 Beta 2.0+/-0.2 2.0+/-0.2 **

Air Filter-A3 9/10/07 Beta 1.9+/-0.2 2.1+/-0.2 **

Air Filter-A4 9/10/07 Beta 2.0+/-0.2 2.2+/-0.2 **

Air Filter-A5 9/10/07 Beta 2.2+/-0.3 2.1+/-0.2 **

Air Filter-SFA1 9/10/07 Beta 2.3+/-0.3 2.2+/-0.3 **

Air Filter-SFA2 9/10/07 Beta 2.4+/-0.3 2.5+/-0.3 **

Air Filter-SFA3 9/10/07 Beta 2.2+/-0.2 2.2+/-0.2 **

Air Filter-SFA4 9/10/07 Beta 2.1+/-0.2 2.2+/-0.3 **

3 10-3 pCi/m Air Filters-Al 10/15/07 Gamma <MDA <MDA <MDA Air Filters-A2 10/15/07 Gamma <MDA <MDA <MDA Air Filters-A3 10/15/07 Gamma <MDA <MDA <MDA

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

63

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLEC Continued Results of Quality Assurance Program Sample Type Sample Type of Original _Replicate Split And Location Date Analysis Analysis Analysis Analysis 3

10-3 pCi/m Air Filters-A4 10/15/07 Gamma <MDA <MDA <MDA Air Filters-A5 10/15/07 Gamma <MDA <MDA <MDA Air Filters-SFA1 10/15/07 Gamma <MDA <MDA <MDA Air Filters-SFA2 10/15/07 Gamma <MDA <MDA <MDA Air Filters-SFA3 10/15/07 Gamma <MDA <MDA <MDA Air Filters-SFA4 10/15/07 Gamma <MDA <MDA <MDA 3

10-2 pCi/m Air Iodine-Al 10/08/07 1-131 <MDA <MDA **

Air Iodine-A2 10/08/07 1-131 <MDA <MDA **

3

,_ 10-2 pCi/m Air Filter-Al 10/08/07 Beta 3.1+/-0.3 3.3+/-0.3 **

Air Filter-A2 10/08/07 Beta 2.0+/-0.2 2.1+/-0.2 **

Air Filter-A3 10/08/07 Beta 3.3+/-0.3 3.4+/-0.3 **

Air Filter-A4 10/08/07 Beta 2.1+/-0.2 2.1+/-0.2 **

Air Filter-A5 10/08/07 Beta 2.2+/-0.2 2.4+/-0.2 **

Air Filter-SFA1 10/08/07 Beta 2.3+/-0.2 2.6+/-0.2 **

Air Filter-SFA2 10/08/07 Beta 2.5+/-0.2 2.3+/-0.2 **

Air Filter-SFA3 10/08/07 Beta 2.3+/-0.2 2.6+/-0.2 **

Air Filter-SFA4 10/08/07 Beta 2.3+/-0.2 2.5+/-0.2 **

3 10-2 pCi/m Air Filter-Al 11/05/07 Beta 1.9+/-0.2 2.0+/-0.2 **

Air Filter-A2 11/05/07 Beta 2.0+/-0.2 2.0+/-0.2 **

Air Filter-A3 11/05/07 Beta 1.7+/-0.2 1.9+/-0.2 **

Air Filter-A4 11/05/07 Beta 2.1+/-0.2 2.2+/-0.2 **

Air Filter-A5 11/05/07 Beta 2.3+/-0.2 2.2+/-0.2 **

Air Filter-SFA1 11/05/07 Beta 2.3+/-0.2 2.4+/-0.2 **

Air Filter-SFA2 11/05/07 Beta 2.2+/-0.2 2.2+/-0.2 **

Air Filter-SFA3 11/05/07 Beta 2.4+/-0.2 2.4+/-0.2 **

Air Filter-SFA4 11/05/07 Beta 2.4+/-0.2 2.2+/-0.2 **

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

64

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C Continued Results of Quality Assurance Program Sample Type Sample Type of Original Replicate Split And Location Date Analysis Analysis Analysis Analysis 3

10-2 ppCi/m Air Iodine-A3 11/05/07 1-131 <MDA <MDA **

Air Iodine-A5 11/05/07 1-131 <MDA <MDA **

pCi/L Bay Water-Wa2 11/30/07 Gamma <MDA <MDA <MDA 3

10-2 pCi/m Air Filter-Al 12/10/07 Beta 1.9+/-0.2 1.7+/-0.2 **

Air Filter-A2 12/10/07 Beta 1.5+/-0.2 1.6+/-0.2 **

Air Filter-A3 12/10/07 Beta 1.7+/-0.2 1.6+/-0.2 **

Air Filter-A4 12/10/07 Beta 1.8+/-0.2 2.1+/-0.2 **

Air Filter-A5 12/10/07 Beta 1.9+/-0.2 1.8+/-0.2 **

Air Filter-SFA1 12/10/07 Beta 1.7+/-0.2 1.5+/-0.2 **

Air Filter-SFA2 12/10/07 Beta 2.0+/-0.2 2.1+/-0.2 **

Air Filter-SFA3 12/10/07 Beta 2.0+/-0.2 1.9+/-0.2 **

Air Filter-SFA4 12/10/07 Beta 1.9+/-0.2 1.8+/-0.2 **

Air Iodine-Al 12/10/07 1-131 <MDA <MDA **

Air Iodine-A2 12/10/07 1-131 <MDA <MDA **

pCi/Kg Soil-SFS2 12/18/07 Cs-137 103+/-39 131+/-46 99+/-71 SoiI-SFS3 12/18/07 Cs-1 37 502+/-91 565+/-91 565+/-91 pCi/Kg Vegetation-SFb2 12/18/07 Gamma <MDA <MDA <MDA Vegetation-SFb3 12/18/07 Cs-137 1 27+/-24 <MDA <MDA

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

1 See discussion at the beginning of the Appendix.

65

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C Continued Results of Quality Assurance Program Sample Type Sample Type of Original Replicate Split And Location Date Analysis Analysis Analysis Analysis mR/90 Days DR05 01/03/08 TLD 13.39+/-1.34 11.79+/-1.17 DR06 01/03/08 TLD 11.02+/-1.06 10.28+/-1.02 **

DR07 01/03/08 TLD 11.26+/-1.37 10.15+/-1.22 DR08 01/03/08 TLD 16.04+/-1.68 15.27+/-0.99 DR09 01/03/08 TLD 12.29+/-0.45 11.66+/-0.69 DR10 01/03/08 TLD 11.60+/-1.19 11.09+/-0.81 **

DR11 01/03/08 TLD 11.88+/-2.32 11.18+/-1.12 SFDR14 01/03/08 TLD 17.90+/-3.71 17.28+/-2.55 SFDRI5 01/03/08 TLD 20.18+/-3.71 20.83+/-2.71 **

DR29 01/03/08 TLD 16.30+/-2.17 15.39+/-1.05 DR31 01/03/08 TLD 16.91+1.74 15.66+/-1.07

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

66

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE C-3 Teledyne Brown Engineering's Typical MDAs for Gamma Spectrometry Selected Bay Water Fish Shellfish Sediment Vegetation Particulates Nuclides pCi/I pCi/kg pCi/kg pCi/kg pCi/kg 10-3pCi/m 3 H-3 175 -- -- -- -- --

Na-22 1 8 3 12 6 5 Cr-51 12 105 4 104 50 63 Mn-54 1 9 3 12 5 4 Co-58 1 9 4 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 67

January 1 - December 31, 2007 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.

Discussion A Land Use Survey was conducted to identify, within a distance of 5 miles, the location of the nearest milk animal, the nearest residence, and the nearest garden greater than 50 M2 in each of the nine sectors over land. A detailed description of the Land Use Survey is given in a separate document (Ref. 9). The position of the nearest residence and garden in each sector out to 5 miles is given in the adjacent table. There are no animals producing milk for human consumption within the 5 mile radius. There were no new residences within the 5-mile radius.

S ~Land Use Survey Distance From Plant (miles)

Sector Residence Garden SE 1.7 1.7 SSE 1.3 1.8 S 1.8 1.8 SSW 1.5 1.7 Sw 1.1 1.1 WSW 1.2 1.4 W 1.3 1.5 WNW 2.5 2.5 NW 2.1 2.1 The closest residence is situated in the SW sector and the nearest garden, also situated in the SW sector, which is one of the least prevalent wind directions. In the 5, 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.

68

January 1 - December 31, 2007 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 Specifications were changed in March, 1985. Additionally, they include the PICs added for the ISFSI. -

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

69

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 TABLE E-1 Locations of Non-ODCM Environmental Sampling Stations for Calvert Cliffs Nuclear Power Plant Distance 1 Direction1 Station Description (KM) (Miles) (Sector)

A6 Long Beach 4.4 2.7 NW A7 Tavlors Island, Carpenter's Property 12.6 7.8 ENE A8 Cambridae. U of MD Estuarine Center 32.0 19.9 NE DR24 Route 4 and Parran Road 3.0 1.9 SW DR25 Camo Conoy Guard House 1.0 0.6 S DR26 Route 235 & Clarks Landin2 Rd. 20.5 12.7 SW DR27 Route 231 & Route 4 23.0 14.3 NW DR28 Taylors Island Emer ency Siren #35 12.3 7.6 ENE DR29 Taylors Island Emeraency 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, Tavlors 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, Carpenter'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 1 Resin Storage Area - East Fence Left 0.7 0.4 SW RPDR12 Resin Storage Area - East Fence Right 0.7 0.4 SW Wbsl Intake Area 0.2 0.1 NE Wbs2 Discharge Area 0.3 0.2 N Wbs3 Long Beach 4.4 2.7 NW Wbs4 Camp Conov/Rockv Point 3.0 1.9 SE Wwl Tavlors Island, Carpenter's Provertv 12.6 7.8 ENE 1 Distance and direction from the central point between the two containment buildings.

70

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table E-2 Synopsis of 2007 Calvert Cliffs Nuclear Power Plant Non-Tech Spec Radiological Environmental Monitoring Program Sample Type Sampling Number of Number Analysis Analysis Number Frequency 1 Locations Collected Frequency Analyzed Aquatic Environment Bottom Sediment Q 2 4 Gamma Q 4 Atmospheric Environment 2

Air-Iodine W 7 362 1-131 W 362 Air Particulates 3 W 3 156 Gross Beta W 156 Gamma MC 36 Direct Radiation Pressurized Ion M 6 72 Gamma M 72 Chamber Ambient Radiation Q 20 474 TLD Q, 474 Terrestrial Environment Ground water M 1 12 H-3 M 12 Gamma M 12 2'W=weekly, M=monthly, Q=quarterly, SA= Semiannual, Aý annual, C=composite The collection device contains Silver Zeolite 3

Beta counting is performed after >72 hour decay. Gamma spectroscopy performed on monthly'composites of weekly samples 71

January 1 - December 31, 2007 Docket Nos. 50-317/50-3 18/72-8 Table E-3 Annual Summary for Calvert Cliffs Nuclear Power Plant Units 1 & 2 Non Tech Spec Radiological Environmental Monitoring Program Medium or Pathway Type and Total Lower Indicator Location with Highest Control Sampled (Unit of Number of Limit of Locations Highest Annual Annual Mean Locations Measurement) Analyses Detection Mean Mean (F)/Range Mean Performed (LLD) (F)/Range 1 Name/Distance (F)/Range

& Direction 2 Aquatic Environment Bottom Sediment Gamma (4) 17 148 (2/2) Discharge Area 148 (2/2) 110 (2/2)

(pCi/kg) Cs-1 37 (61-235) Wbs2 (61-235) (90-131) 0.3 km N Atmospheric Environment Air Particulates Gross Beta (156) 0.5 1.8 (104/104) Cambridge CAM 1.9 (52/52) 1.7 (52/52)

(10.2 pCi/m 3) (0.7-3.2) 32.0 km NE (0.9-3.2) (0.8-2.81)

Direct Radiation Ambient Radiation TLD (474) -- 43.08 (474/474) South Fence 124.25 (24/24)

(mR/90 days) (7.87-406.48) Lower RPDR10 (15.97-406.48) km Pressurized Ion Ionization Chamber -- 7.15 (60/60) NNW of ISFSI 11.64 (12/12) 6.74 (12/12)

Chamber (72) (4.13-12.13) PIC4 (11.20-12.13) (5.64-7.28)

(mR/30 days) 0.6 km SW I Mean and range based upon detectable measurements only. Fraction (F) of detectable measurements at specified locations is indicated in parentheses 2 From the centerpomnt between the two containment buildings.

72

January 1 - December 31, 2007 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) +/- 2o)

SAMPLE CODE Sample Cs-1 37 Gamma Emitters Date Wbs2 6/27/2007 235 +/- 72

Discharge Area 10/31/2007 61 62

Wbs4' 6/27/2007 90 +/- 55

Camp Conoy/ Rocky Point 10/31/2007 131 55 *

'Control Location

All Non-Natural Gamma Emitters <MDA 73

January 1 - December 31, 2007 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 Stop A6 A7 CAM SFA1 SFA2 1 SFA3 SFA4 Date Date Long Taylors Cambridge MET Visitors NNW of SSE Beach Island Station Center ISFSI of ISFSI 1/1/2007 1/8/2007 "*

1/8/2007 1/15/2007 * * * *

1/15/2007 1/22/2007 * * * *

1/22/2007 1/29/2007

1/29/2007 2/5/2007 *k

/

2/5/2007 2/12/2007 "*

1 2/12/2007 2/19/2007 *k *k 2/19/2007 2/26/2007 *t

/ * * *

2/26/2007 3/5/2007 3/5/2007 3/12/2007 * * *

2 3/12/2007 3/19/2007 * * *

3/19/2007 3/26/2007 * *

3 3/26/2007 4/2/2007 * * * *

*/ *

4/2/2007 4/9/2007 * *

* * *1 *

4/9/2007 4/16/2007 4/16/2007 4/23/2007 .*

4/23/2007 4/30/2007 * *

1 4/30/2007 5/7/2007 * * *

k 5/7/2007 5/14/2007 * * * * *

5/14/2007 5/21/2007 5/21/2007 5/28/2007 * * *

/

5/28/2007 6/4/2007 * * * *

k

t 6/4/2007 6/11/2007 * * * *

t *k 6/11/2007 6/18/2007 * * *

6/18/2007 6/25/2007 * * *

6/25/2007 7/2/2007 * * *

1 Control Location 2 Loss of Data, Air Sampler Malfunction 3 Loss of Data, Operator Error

<MDA 74

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table E-5 Continued Concentration of Iodine-131 in Filtered Air (Results in units of 10-3 pCi/m 3 +/- 2or)

Start Date Stop Date A6 A7 CAM SFA1 SFA2 1 SFA3 SFA4 Long Taylors Cambridge MET Visitors NNW of SSE Beach Island Station Center ISFSI of ISFSI

*/ * *k 7/2/2007 7/9/2007 */ */

* *k 7/9/2007 7/16/2007 *k

"* * */

7/16/2007 7/23/2007 */ */

7/23/2007 7/30/2007 *k *k *k

k

*/ * *k 7/30/2007 8/6/2007

t */ * * */

8/6/2007 8/13/2007 8/13/2007 8/20/2007 .*

* * *)

8/20/2007 8/27/2007 *)

/ * */

8/27/2007 9/3/2007 *

"* */

/

.* */ * */ *t 9/3/2007 9/10/2007 *)

9/10/2007 9/17/2007 */ -*

/

9/17/2007 9/24/2007 *k .* *k 9/24/2007 10/1/2007 .*

.* *k

/ */ *k 10/11/2007 10/8/2007 */

) */

10/8/2007 10/15/2007 "* */ */

/ .*

10/15/2007 10/22/2007

k 10/22/2007 10/29/2007 */ *k

1 *k

"* *t *k

t */

10/29/2007 11/5/2007 */

11/5/2007 11/12/2007 */

) "* */

11/12/2007 11/19/2007 11/19/2007 11/26/2007 "*

11/26/2007 12/3/2007 */

k 12/3/2007 12/10/2007 12/10/2007 12/17/2007 12/17/2007 12/24/2007 12/24/2007 12/31/2007 Control Location

<MDA f

75

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table E-6 Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2a)

Start Date Stop Date . A6 A7 1 CAM Long Beach Taylors Island Cambridge 1/1/2007 1/8/2007 1.4 +/-0.2 1.2 +/- 0.2 0.9 +/- 0.2 1/8/2007 1/15/2007 1.7 +/-0.2 1.7 +/- 0.2 1.9 +/-0.2 1/15/2007 1/22/2007 1.3 +/-0.2 1.1 +/-0.1 1.2 +/-0.2 1/22/2007 1/29/2007 2.2 +/- 0.2 2.1 +/- 0.2 2.2 +/- 0.2 1/29/2007 2/5/2007 3.0 +/- 0.3 2.8 +/- 0.2 2.8 +/- 0.2 2/5/2007 2/12/2007 2.3 +/- 0.2 1.9 +/- 0.2 2.0 +/- 0.2 2/12/2007 2/19/2007 2.3 +/- 0.2 2.2 +/- 0.2 2.6 +/- 0.2 2/19/2007 2/26/2007 1.9 +/-0.2 1.1 +/-0.2 1.3 +/-0.2 226/2007 3/5/2007 1.4 +/- 0.2 1.5 +/-0.2 1.6 +/-0.2 3/5/2007 3/12/2007 2.6 +/- 0.3 2.1 +/-0.2 2.4+/-0.2 3/12/2007 3/19/2007 1.9 +/-0.2 2.0 +/- 0.2 1.8 +/-0.2 3/19/2007 3/26/2007 1.9 +/-0.2 1.6 +/- 0.2 2.0 +/- 0.2 3/26/2007 4/2/2007 1.6 +/- 0.2 1.7 +/- 0.2 2.0 +/- 0.2 4/2/2007 4/9/2007 1.6 4/-0.2 1.5 +/- 0.2 2.0 +/- 0.2 4/9/2007 4/16/2007 1.2 +/- 0.2 1.0 +/- 0.2 1.2 +/-0.2 4/16/2007 4/23/2007 1.0 +/-0.2 1.1 +/-0.2 1.2 +/-0.2 4/23/2007 4/30/2007 1.2 +/-0.2 2.0 +/- 0.2 2.1 +/-0.2 4/30/2007 5/7/2007 1.1 +/-0.1 1.1 +/-0.1 1.4 +/-0.2 5/7/2007 5/14/2007 0.7 +/- 0.2 0.8 +/- 0.2 1.0 +/-0.2 5/14/2007 5/21/2007 1.1 +/-0.1 1.1 +/-0.1 1.5 +/-0.2 5/21/2007 5/28/2007 1.6 +/-0.2 2.2 +/- 0.2 2.8 +/- 0.3 5/28/2007 6/4/2007 1.4 +/-0.2 1.0 +/- 0.2 1.3 +/-0.2 6/4/2007 6/11/2007 1.4 +/- 0.2 1.4 +/- 0.2 1.3 +/-0.2 6/11/2007 6/18/2007 1.0 +/-0.1 1.2 +/- 0.2 1.5 +/-0.2 6/18/2007 6/25/2007 1.7 +/-0.2 1.7 +/- 0.2 2.1 +/-0.2 6/25/2007 7/2/2007 1.2 +/-0.2 1.3 +/- 0.2 1.7 +/-0.2 1 Control Location

<MDA 76

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table E-6 Continued Concentration of Beta Emitters in Air Particulates (Results in units of 10-2 pCi/m 3 +/- 2cr)

Start Date Stop Date A6 A71 CAM Long Beach Taylors Island Cambridge 7/2/2007 7/9/2007 1.4 +/-0.2 1.9 +/-0.2 2.3 +/- 0.2 7/9/2007 7/16/2007 2.2 +/- 0.2 1.8 +/- 0.2 2.3 +/- 0.2 7/16/2007 7/23/2007 1.8 +/-0.2 1.7 +/- 0.2 2.0 +/- 0.2 7/23/2007 7/30/2007 1.4 +/-0.2 1.4 +/- 0.2 1.7 +/- 0.3 7/30/2007 8/6/2007 1.6 +/- 0.2 2.0 +/- 0.2 3.1 +/-0.3 8/6/2007 8/13/2007 2.0 +/- 0.2 2.3 +/- 0.2 2.5 +/- 0.2 8/13/2007 8/20/2007 2.0 +/- 0.2 1.7 +/-0.2 1.4 +/-0.2 8/20/2007 8/27/2007 1.1 +/-0.2 1.2 +/-0.2 1.0 +/--0.2 8/27/2007 9/3/2007 2.0 +/- 0.2 1.6 +/- 0.2 2.3 +/- 0.2 9/3/2007 9/10/2007 2.1 +/-0.2 1.6 +/-0.2 1.7 +/-0.2 9/10/2007 9/17/2007 1.4 +/-0.1 1.8 +/-0.2 1.4 +/- 0.2 9/17/2007 9/24/2007 1.7 +/-0.3 1.6 +/-0.2 1.8 +/-0.2 9/24/2007 10/1/2007 2.7 +/- 0.2 2.7 +/- 0.2 3.2 +/- 0.2 10/1/2007 10/8/2007 2.2+/-0.2 2.3 +/- 0.2 2.5 +/- 0.2 10/8/2007 10/15/2007 1.9 +/-0.2 1.9 +/-0.2 2.0 +/- 0.2 10/15/2007 10/22/2007 2.8 +/- 0.2 2.7 +/- 0.2 2.6 +/- 0.2 10/22/2007 10/29/2007 1.8 +/- 0.2 1.5 +/-0.2 1.7+/-0.2 10/29/2007 11/5/2007 2.0 +/- 0.2 2.0 +/- 0.2 2.2 +/- 0.2 11/5/2007 11/12/2007 2.2 +/- 0.2 1.3 +/-0.3 1.5 +/-0.3 11/12/2007 11/19/2007 2.4 +/- 0.2 2.8 +/- 0.3 1.4 +/-0.1 11/19/2007 11/26/2007 1.9 +/- 0.2 1.5 +/- 0.2 1.7 +/- 0.2 11/26/2007 12/3/2007 2.7 +/- 0.2 2.5+/-0.3 2.1 +/-0.2 12/3/2007 12/10/2007 1.7 +/-0.2 1.5 +/-0.2 1.9 +/-0.2 12/10/2007 12/17/2007 1.7 +/- 0.2 1.7 +/- 0.2 1.6 +/- 0.2 12/17/2007 12/24/2007 2.9 +/- 0.3 2.6 +/- 0.2 2.1 +/-0.2 12/24/2007 12/31/2007 2.3 +/- 0.2 1.8 +/- 0.3 1.4 +/-0.2 Control Location

<MDA 77

January 1 - December 31, 2007 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 +/- 2(y).

Sample Date A6 A71 CAM Long Beach Taylors Island Cambridge

/ *¢

1/15/2007 "* "*

2/15/2007 *

/

3/15/2007 */ *k

/ */

4/15/2007 */

/ */

5/15/2007

/ *k 6/15/2007 *k 7/15/2007 */

8/15/2007 */

9/15/2007 */ "*

10/15/2007 "*

11/15/2007 */

12/15/2007 1 Control Location

Non-Natural Gamma Emitters <MDA 78

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table E-8 Concentration of Tritium and Gamma Emitters in Taylors Island Well Water (Results in units of 10-3 pCi/mi3 +/- 2a)

Sample H-3 Gamma Emitters Date 1/29/2007 <335 2/27/2007 <335 3/26/2007 <335 4/30/2007 <357 5/29/2007 <357 6/29/2007 <357 7/31/2007 <357 8/27/2007 <357 10/1/2007 <357 10/29/2007 <376 11/27/2007 <376 12/31/2007 <376

Non-Natural Gamma Emitters <MDA 79

January 1 - December 31, 2007 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 PilC I JAN 5.64 +/- 0.56 FEB 5.66 +/- 0.57 Taylor's Island MAR 5.93 +/- 0.59 APR 7.18 +/- 0.72 MAY 7.25 +/- 0.72 JUN 6.92 +/- 0.69 JUL 7.20 +/- 0.72 AUG 7.28 +/- 0.73 SEP 7.17 +/- 0.72 OCT 7.10 +/- 0.71 NOV 6.79'+/- 0.68 DEC 6.76 +/- 0.68 PIC2 JAN 4.31 +/- 0.43 FEB 4.36 +/- 0.44 Entrance to Camp MAR 5.04 +/- 0.50 APR 4.67 +/-0.47 Conoy MAY 4.40 +/- 0.44 JUN 4.16 +/- 0.42 JUL 4.20 +/- 0.42 AUG 4.22 +/- 0.42 SEP 4.13 +/- 0.41 OCT 4.19 +/- 0.42 NOV 4.21 +/- 0.42 DEC 4.20 +/- 0.42 PIC3 JAN 5.92 +/- 0.59 FEB 6.17 +/- 0.62 MET Station MAR 6.09 +/- 0.61 APR 6.68 +/- 0.67 MAY 6.71 +/- 0.67 JUN 7.02 +/-0.70 JUL 6.69 +/- 0.67 AUG 7.24 +/- 0.72 SEP 6.75 +/- 0.68 OCT 6.68 +/- 0.67 NOV 6.95 +/- 0.69 DEC 6.94 +/- 0.69 PIC4 JAN 11.65 +/- 1.16 FEB 11.74 +/- 1.17 NNW of ISFSI MAR 11.88 +/- 1.19 APR 12.13 +/- 1.21 MAY 11.66 +/- 1.17 JUN 11.87 +/- 1.19 JUL 11.68 +/- 1.17 AUG 11.59 +/- 1.16 SEP 11.48 +/- 1.15 OCT 11.46 +/- 1.15 NOV 11.37 +/- 1.14 DEC 11.20 +/- 1.12 PIC5 JAN 10.81 +/-1.08 FEB 10.81 +/-1.08 SSE of ISFSI MAR 10.67 +/- 1.07 APR 10.84 +/- 1.08 MAY 7.00 +/- 0.70 JUN 6.65 +/- 0.66 JUL 6.69 +/- 0.67 AUG 6.64 +/- 0.66 SEP 6.52 +/- 0.65 OCT 6.59 +/- 0.66 NOV 6156 +/- 0.66 DEC 6.54 +/- 0.65 PIC8 JAN 5.00 +/- 0.50 FEB 5.14 +/- 0.51 Visitor's Center MAR 5.20 +/- 0.52 APR 6.05 +/- 0.60 MAY 5.52 +/- 0.55 JUN 4.86 +/- 0.49 JUL 4.91 +/- 0.49 AUG 4.82 +/- 0.48 SEP 4.81 +/- 0.48 OCT 4.85 +/- 0.48 NOV 4.85.+/- 0.48 DEC 4.84 +/- 0.48

'Control location 80

January 1 - December 31, 2007 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. 10.98 +/- 1.18 11.09 +/-0.73 11.18 +-0.79. 13.03 +/- 1.23 DR25 Camp Conoy Guard House 12.06 +/- 1.50 12.32 +/- 1.28 12.02 +/- 0.84 14.28 +/- 2.10 DR26 Rt. 235 and Clark's Landing Road 10.57 +/- 0.65 10.35 +/- 1.18 10.22 +/- 0.50 11.78 +/- 0.68 DR27 Rt. 231 and Rt. 4 10.66 +/- 0.66 10.13 +/- 0.68 10.41 +/- 1.44 12.20 +/- 0.74 DR28 Taylors Is. Siren #35 12.48 +/- 0.58 14.75 +/- 2.05 16.24 +/- 2.46 DR29 Taylors Is. Siren #38 14.38 +/- 1.92 12.49 +/- 1.87 14.14 +/- 1.45 16.30 +/- 2.17 DR31 Cambridge 13.17 +/- 1.48 14.88 +/- 2.17 15.57 +/- 1.08 16.91 +/- 1.74 DR32 Twining Property, Taylors Island 12.33 +/-0.38 12.80 +/- 1.37 15.02 +/- 1.01 16.55 +/- 0.83 DR33 P. A. Ransome Property 28.64 +/- 2.70 14.17 +/- 2.11 15.33 +/-1.13 17.83 +/- 1.70 DR34 Shoreline at Barge Rd. 9.57 +/- 0.71 9.16 +/- 0.80 8.87 +/- 0.71 10.18 +/- 0.65 OSG1 North of Old Steam Generator 18.65 +/- 1.17 18.64 +/- 2.40 19.87 +/- 1.80 21.56 +/- 0.93 Storage Facility OSG2 West of Old Steam Generator 16.57 +/- 1.53 18.26 +/- 3.18 16.70 +/- 2.23 20.26 +/- 2.04 Storage Facility

Lost TLD 81

January 1 - December 31, 2007 Docket Nos. 50-317/50-318/72-8 Table E-11 Direct Radiation from Resin Storage Area (Results in units of mR/90 days +/- 2o')

Site Code Location First Quarter Second Quarter Third Quarter Fourth Quarter RPDR05 North Fence Lower 57.91 +/- 4.19 196.41 +/- 22.99 44.99 +/- 3.54 43.78 +/-3.85 RPDR06 North Fence Upper 50.20 +/- 7.06 138.67 +/- 2.96 59.31 +/-9.13 8.79 +/- 0.49 RPDR07 West Fence Right 11.21 +/- 0.90 383.06 +/- 32.17 43.51 +/- 3.89 41.27 +/- 1.18 RPDR08 West Fence Left 14.32 +/- 0.65 363.55 +/- 50.59 7.87 +/- 0.25 9.88 +/- 0.94 RPDR09 South Fence Upper 15.41 +/- 1.14' 215.35 +/- 4.74 13.84 +1- 0.92 13.31 +/- 1.31 RPDR10 South Fence Lower 32.09 +/- 3.04 406.48 +/- 36.49 42.46 +/- 2.92 15.97 +/- 2.12 RPDR11 East Fence Left 20.57 +1- 1.25 249.14 +/- 42.34 15.81 +/- 1.05 12.67 +/- 1.22 RPDR12 East Fence Right 20.04 +/- 1.99 122.12 +/- 14.15 8.13 +i- 0.73 59.39 +/- 6.67 82

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