ML101310608
| ML101310608 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/28/2010 |
| From: | Macmanus R Dominion Nuclear Connecticut |
| To: | Document Control Desk, NRC/FSME, Office of Nuclear Reactor Regulation |
| References | |
| 10-194, FOIA/PA-2011-0115 | |
| Download: ML101310608 (137) | |
Text
Dominion Nuclear Connecticut, Inc.
Millstone Power Station z Dominion-Rope Ferry Road Waterford, CT 06385 APR 2r_-0 U.S. Nuclear Regulatory Commission Serial No.10-194 Attention: Document Control Desk MPS Lic/GJC RO Washington, DC 20555 Docket Nos. 50-245 50-336 50-423 License Nos. DPR-21 DPR-65 NPF-49 DOMINION NUCLEAR CONNECTICUT, INC.
MILLSTONE POWER STATION UNITS 1. 2. AND 3 2009 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT This letter transmits the Annual Radiological Environmental Operating Report for the Millstone Power Station, for the period January 2009 through December 2009. This satisfies the provisions of Section 5.7.2 of Millstone Power Station Unit 1 Permanently Defueled Technical Specifications (PDTS), and Sections 6.9.1.6a and 6.9.1.3 of the Millstone Power Station Units 2 and 3 Technical Specifications, respectively.
If you have any questions or require additional information, please contact Mr. William D. Bartron at (860) 444 4301.
Sincerely, R. K. MacManus Director, Nuclear Station Safety and Licensing I KILq0
Serial No.10-194 2009 Annual Radiological Environmental Operating Report Page 2 of 4 Attachments: 1 Commitments made in this letter: None.
cc: U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415 Mr. J. B. Hickman NRC Project Manager Millstone Unit 1 U.S. Nuclear Regulatory Commission Mail Stop T-7E18 Washington, DC 20555 Ms. L. A. Kauffman NRC Inspector U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415 Mr. T. A. Moslak NRC Inspector U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415 Ms. C. J. Sanders NRC Project Manager U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 8B3 11555 Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Millstone Power Station
Serial No.10-194 2009 Annual Radiological Environmental Operating Report Page 3 of 4 (2copies)
Director Bureau of Air Management Monitoring & Radiation Division Department of Environmental Protection 79 Elm Street Hartford, CT 06106-5127 Mr. James Chernaick Regional Radiation Representative (EPA Region 1, Boston)
U. S. Environmental Protection Agency (Region 1)
John F. Kennedy Federal Building (ATR-2311)
Boston, MA 02203 Mr. Ronald E. Bernacki Department of Health and Human Services U. S. Food and Drug Administration Office of Regulatory Affairs Mortheast Region Field Office (NER-FO) 158-15 Liberty Ave.
Jamaica, NY 11433 Mr. Daniel F. Caruso Chairman Connecticut Siting Council 10 Franklin Square New Britain, CT 06051 Mr. Pat Kelley Waterford-East Lyme Shellfish Commission Waterford Town Hall Waterford, CT 06385 Mr. Jason A. Martinez American Nuclear Insurers 95 Glastonbury Blvd.
Glastonbury, CT 06033 Mr. Dave Lamoureux Connecticut Department of Agriculture Aquaculture Division P. O. Box 97 Millford, CT 06460
Serial No.10-194 2009 Annual Radiological Environmental Operating Report Page 4 of 4 Mr. Dan Steward First Selectman Town of Waterford Waterford Town Hall Waterford, CT 06385 Mr. Paul Formica First Selectman Town of East Lyme PO Box 519 Niantic, CT 06357 Mr. Martin Berliner City Manager
-181 State Street New London, CT 06320 University Of Connecticut Library Serials Department Storrs, CT 06268
Serial No.10-194 Docket Nos. 50-245 50-336 50-423 License Nos. DPR-21 DPR-65 NPF-49 ATTACHMENT 1 2009 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MILLSTONE POWER STATION UNITS 1, 2, AND 3 DOMINION NUCLEAR CONNECTICUT, INC. (DNC)
Millstone Power Station 2009 Radiological Environmental Operating Report January 1, 2009 - December 31, 2009 Dominion Nuclear Connecticut, Inc.
Unit License Docket 1 DPR-21 50-245 2 DPR-65 50-336 3 NPF-49 50-423 PDominion
ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MILLSTONE PC*WER STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 2009 MILLSTONE UNIT 1,DOCKET NO. 50-245 MILLSTONE UNIT 2, DOCKET NO. 50-336 MILLSTONE UNIT 3, DOCKET NO. 50-423 By the Dominion Nuclear Connecticut, Inc.
Waterford, Connecticut
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009
- TABLE OF CONTENTS -
EXECUTIVE
SUMMARY
................................................................................................ i
- 1. INTRODUCTION ....................................................................................... 1-1 1.1 Overview ....................................................................................... ..1-1 1.2 Radiation and Radioactivity .............................................................. 1-1 1.3 Sources of Radiation ........................................................................ 1-2 1.4 Nuclear Reactor Operations .............................................................. 1-3 1.5 Radioactive Effluent Control ............................................................. 1-8 1.6 Radiological Im pact on Hum ans ..................................................... 1-11
- 2. PROGRAM DESCRIPTION ........................................................................... 2-1 2.1 Sam pling Schedule and Locations ................................................... 2-1 2.2 Sam ples Collected During Report Period ......................................... 2-7
- 3. RADIOCHEMICAL RESULTS ........................................................................ 3-1 3.1 Sum mary Table ................................................................................ 3-1 3.2 Data Tables ...................................................................................... 3-3
- 4. DISCUSSION OF RESULTS ......................................................................... 4-1 4.1 Gam ma Exposure Rate (Table 1) .................................................... 4-1 4.2 Air Particulate Gross Beta Radioactivity (Table 2) ........................... 4-3 4.3 Airborne Iodine (Table 3) ................................................................. 4-4 4.4 Air Particulate Gam m a (Table 4A-D) ................................................ 4-4 4.5 Air Particulate Strontium (Table 5) ................................................... 4-4 4.6 Soil (Table 6) ................................................................................... 4-4 4.7 Cow Milk (Table 7) ........... ............................................................... 4-5 4.8 Goat Milk (Table 8) .......................................................................... 4-5 4.9 Pasture Grass and Feed (Table 9) .................................................. 4-6 4.10 W ell W ater (Table 10) ..................................................................... 4-6 4.11 Reservoir W ater (Table 11) ............................................................. 4-6 4.12 Fruits and Vegetables (Table 12) .................................................... 4-6 4.13 Broad Leaf Vegetation (Table 13) ................................................... 4-7 4.14 Seawater (Table 14) ........................................................................ 4-7 4.15 Bottom Sediment (Table 15) ............................................................ 4-9 4.16 Aquatic Flora (Table 16) ................................................................ 4-10 4.17 Fish (Tables 17A and 17B) ............................................................ 4-10 4.17.1 Flounder (Table 17A) ....................................................... 4-10 4.17.2 Fish - Other (Table 17B) .................................................. 4-10 4.18 M ussels (Table 18) ........................................................................ 4-10 4.19 Oysters (Table 19) ......................................................................... 4-11 4.20 Clam s (Table 20) ........................................................................... 4-12 4.21 Scallops (Table 21) ........................................................................ 4-12 4.22 Lobsters (Table 22) ....................................................................... 4-12
- 5. OFFSITE DOSE EQUIVALENT COMMITMENTS ........................................... 5-1
- 6. DISCUSSION .............................................................................................. 6-1
- 7. REFERENCES ............................................................................................ 7-1 APPENDIX A - LAND USE CENSUS FOR 2009 .................................................... A-1 APPENDIX B - DNC QA PROGRAM ...................................................................... B-1 APPENDIX C -
SUMMARY
OF. INTERLABORATORY COMPARISONS ................ C-1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 0
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 EXECUTIVE
SUMMARY
INTRODUCTION This report summarizes the results of the Radiological Environmental Monitoring Program (REMP) conducted in the vicinity of Millstone Power Station (MPS) during the period from January 1 to December 31, 2009. This document has been prepared in accordance with the requirements of Millstone Unit 1, Unit 2 and 3 Technical Specifications.
The REMP has been established to monitor the radiation and radioactivity released to the environment as a result of Millstone Station's operation. This program, initiated in April 1967, includes the collection, analysis, and evaluation of radiological data in order to assess the impact of Millstone Station on the environment and on the general public.
SAMPLING AND ANALYSIS The environmental sampling media collected in the vicinity of MPS and at distant locat ons included air particulate filters, charcoal cartridges, soil, goat milk, pasture grass, hay, well water, broadleaf vegetation, fruits, vegetables, seawater, bottom sediment, aquatic flora, fish, mussels, oysters, clams and lobster.
During 2009, there were 1082 samples collected from the atmospheric, aquatic, and terrestrial environments. In addition, 176 exposure measurements were obtained using environmental thermoluminescent dosimeters (TLDs).
A small number of inadvertent issues were encountered in 2009 in the collection of environmental samples in accordance with the Millstone Radiological Effluent Monitoring and Offsite Dose Calculation Manual (REMODCM). Equipment failures and electrical outages resulted in a small number of instances in which lower than normal sampling volumes were collected at the airborne monitoring stations. However, in all cases sufficient volume was obtained to perform all the appropriate analyses. Therefore, all 416 air particulate and charcoal cartridges were collected and analyzed as required. A full description of all discrepancies encountered with the environmental monitoring program is presented in the Notes for the Data Tables of this report.
There were 1412 analyses performed on the environmental media samples. The AREVA-NP Environmental Laboratory of Westborough, MA, performed these analyses. Samples were analyzed as required by the Millstone REMODCM.
LAND USE CENSUS The annual land use census in the vicinity of Millstone Station was conducted as required by the Millstone REMODCM between July 15 and December 31, 2009. Although broadleaf sampling may be used in lieu of a garden census, gardens were included in the 2009 census. Only vegetable gardens having an area of more than 500 square feet need to be identified. Due to the difficulty of measuring individual gardens, the nearest garden within each directional sector identified by a drive-by survey is listed in Appendix A. No new dairy animals within 10 miles of the Station were located during the census. Monthly broad leaf sampling was also performed; it may be used in lieu of the garden census.
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 RADIOLOGICAL IMPACT TO THE ENVIRONMENT Most samples collected as part of the Millstone REMP continued to contain detectable amounts of naturally-occurring and man-made radioactive materials. There was no plant related activity detected in any of the terrestrial samples. Offsite ambient radiation measurements using environmental TLDs beyond the site boundary ranged between 55 and 90 milliRoentgens per year. The range of ambient radiation levels observed with the TLDs is consistent with natural background radiation levels for Connecticut.
Monitoring of the aquatic environment in the area of the discharge indicated the presence of the following station related radionuclide: Tritium. This station related nuclide was only found onsite inside the mixing zone of the quarry discharge at levels that were expected from routine plant operation. No plant related activity was detected in any offsite samples. The predominant radioactivity for all samples was from non-plant related sources, such as fallout from nuclear weapons tests and naturally occurring radionuclides.
RADIOLOGICAL IMPACT TO THE GENERAL PUBLIC During 2009, radiation doses to the general public as a result of Millstone Station's operation continued to be well below the federal limits and much less than the dose due to other sources of man-made (e.g., X-rays, medical) and naturally-occurring (e.g., cosmic, radon) radiation.
The calculated total body dose to the maximally exposed member of the general public from radioactive effluents and ambient radiation resulting from MPS operations for 2009 was approximately 0.2 mrem for the year. This conservative estimate is well below the Environmental Protection Agency's (EPA) annual dose limit to any member of the general public and is a fraction of a percent of the typical dose received from natural and other sources of man-made radiation.
CONCLUSIONS The 2009 Radiological Environmental Monitoring Program for Millstone Station resulted in the collection and analysis of over a thousand environmental samples and measurements.
The data obtained were used to determine the impact of Millstone Station's operation on the environment and on the general public.
An evaluation of direct radiation measurements, environmental sample analyses, and dose calculations indicates all applicable federal criteria were met. Furthermore, radiation levels and resulting doses from station operation were a small fraction of those attributed to natural and man-made background radiation.
Based on this information, there is no significant radiological impact on the environment or on the general public due to Millstone Station's operation.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009
- 1. INTRODUCTION This section provides an overview of the Millstone Power Station Radiological Environmental Monitoring Program. It also includes background information to allow a reader to have an informed understanding of radiation and nuclear power operation.
1.1 Overview The Radiological Environmental Monitoring Program for 2009 performed by Dominion Nuclear Connecticut for Millstone Nuclear Power Station (MPS) is discussed in this report.
Since the operation of a nuclear power plant results in the release of small amounts of radioactivity and low levels of radiation, the Nuclear Regulatory Commission (NRC) requires a program to be established to monitor radiation and radioactivity in the environment (Reference 1). This report, published annually per Millstone Station's Technical Specifications (section 6.9.1.6 for Unit 2 and Section 6.9.1.3 for Unit 3), summarizes the results of measurements of radiation and radioactivity in the environment in the vicinity of the Millstone Station and at distant locations during the period January 1 to Decembler 31, 2009.
The Radiological Environmental Monitoring Program consists of taking radiation measurements and collecting samples from the environment, analyzing them for radioactivity content, and interpreting the results. With emphasis on the critical radiation exposure pathways to humans, samples from the aquatic, atmospheric, and terrestrial environments are collected. These samples include, but are not limited to: air, soil, goat milk, pasture grass, hay, well water, broadleaf vegetation, fruits, vegetables, seawater, bottom sediment, aquatic flora, fish, mussels, oysters, clams and lobster. Thermoluminescent dosimeters (TLDs) are placed in the environment to measure gamma radiation levels. The TLDs are processed and the environmental samples are analyzed to measure the very low levels of radiation and radioactivity present in the environment as a result of MPS operation and other natural and man-made sources. These results are reviewed by MPS's radiological staff and have been reported semiannually or annually to the Nuclear Regulatory Commission and others for over 30 years.
In order to more fully understand how a nuclear power plant impacts humans and the environment, background information on radiation and radioactivity, natural and man-made sources of radiation, reactor operations, radioactive effluent controls, and radiological impact on humans is provided. It is believed that this information will assist the reader in understanding the radiological impact on the environment and humans from the operation of Millstone Station.
1.2 Radiation and Radioactivity All matter is made of atoms. An atom is the smallest part into which matter can be broken down and still maintain all its chemical properties. Nuclear radiation is energy, in the form of waves or particles that is given off from atoms in an excited state (e.g., unstable, radioactive atoms).
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Radioactive material exists naturally and has always been a part of our environment. The earth's crust, for example, contains radioactive uranium, radium, thorium, and potassium.
Some radioactivity is a result of nuclear weapons testing. Examples of radioactive fallout that is normally present in environmental samples are cesium-137 and strontium-90. Some examples of radioactive materials released from a nuclear power plant are cesium-137, iodine-131, strontium-90, and cobalt-60.
Radiation is measured in units of millirem, much like temperature is measured in degrees. A millirem (mrem) is a measure of the biological effect of the energy deposited in tissue. The natural and man-made radiation dose received in one year by the average American is 300 to 600 mrem (References 2, 3, 4, and 5). The per capita dose has increased substantially since the mid 1980's because of the increased usage of medical procedures involving exposure to radiation (see Reference 3).
Radioactivity is measured in Curies. Levels of radioactivity commonly seen in the environment are týpically a small fraction of a Curie, therefore radioactivity in the environment is typi tally measured in picocuries. One picocurie (pCi) is equal to 0.037 disintegrations per st cond (2.22 disintegrations per minute).
1.3 Sources of Radiation As mentioned previously, naturally occurring radioactivity has always been a part of our environment. Table 1.3 shows the sources and doses of radiation from natural and man-made sources.
Table 1.3 Radiation Sources and CorresDondina Doses (1)
NATURAL MAN-MADE Radiation Dose Radiation Dose Source (millirem/year) Source (millirem/year)
Internal, inhalation(2) 228 Medical(3 ) 300 External, space 33 Consumer( 4 ) 13 Internal, ingestion 29 Industrial, security, (5) 0.3 External, terrestrial 21 Occupational 0.5 Weapons Fallout <1 Nuclear Power Plants <1 Approximate Total 311 Approximate Total 314 (1) information from References 3 and 4 (2) from radon and thoron (3) includes CT (147 millirem), nuclear medicine (77 mrem), interventional fluoroscopy (43 mrem) and conventional radiography and fluoroscopy (33 mrem)
(4) primarily from cigarette smoking (4.6 mrem), commercial air travel (3.4 mrem), building materials (3.5 mrem) and mining and agriculture (0.8 mrem)
(5) Industrial, security, medical, educational and research 1-2
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Cosmic radiation (external, space) from the sun and outer space penetrates the earth's atmosphere and continuously bombards us with rays and charged particles. Some of this cosmic radiation interacts with gases and particles in the atmosphere, making them radioactive. These radioactive byproducts from cosmic ray bombardment are referred to as cosmogenic radionuclides. Isotopes such as beryllium-7 and carbon-14 are formed in this way. Exposure to cosmic and cosmogenic sources of radioactivity results in about 30 mrem of radiation dose per year.
Additionally, natural radioactivity is in our body and in the food we eat (about 30 millirem/year), the ground we walk on (about 20 millirem/year) and the air we breathe (about 230 millirem/year). The majority of a person's annual dose results from exposure to radon and thoron in the air we breathe. These gases and their radioactive decay products arise from the decay of naturally occurring uranium, thorium and radium in the soil and building products such as brick, stone, and concrete. Radon and thoron levels vary greatly with location, primarily due to changes in the concentration of uranium and thorium in the soil.
Residents at some locations in Colorado, New York, Penn ylvania, New Jersey and even Connecticut have a higher annual dose as a result of higher levels of radon/thoron gases in these areas. In total, these various sources of naturally-occurring radiation and radioactivity contribute to a total dose of about 310 mrem per year.
In addition to natural radiation, we are normally exposed to radiation from a number of man-made sources. The single largest doses from man-made sources result from therapeutic and diagnostic applications of x-rays and radiopharmaceuticals. The annual dose to an individual in the U.S. from medical and dental exposure is about 300 millirem. Consumer products/uses, such cigarettes, building materials and commercial air travel contribute about 10 millirem/year. Much smaller doses result from weapons fallout (less than 1 millirem/year) and nuclear power plants (less than 1 mrem/year). Typically, the average person in the United States receives about 310 millirem per year from man-made sources.
1.4 Nuclear Reactor Operations Millstone Station generates about 2100 megawatts of electricity at full power, which provides approximately one-third of the power consumed in the State of Connecticut. Unit 2 and Unit 3 are pressurized water reactors (Unit 1, which is permanently shutdown, was a boiling water reactor). The nuclear station is located on an approximate 500-acre site about 5 kilometers (three miles) west of New London, CT. Commercial operation of Unit 2 began in December 1975 and Unit 3 in May 1986.
Millstone Station was operational during most of 2009, with the exception of a refueling outage at Unit 2 and a mini-outages at each unit. Unit 2 refueling outage was performed between October 6 and November 18. The resulting monthly capacity factors are presented in Table 1.4.
Nuclear-generated electricity is produced by many of the same techniques used for conventional oil and coal-generated electricity. Both systems use heat to boil water in order to produce steam. The steam turns a turbine, which turns a generator, producing electricity.
In both cases, the steam passes through a condenser where it changes back into water and recirculates back through the system. The cooling water source for Millstone Station is the Niantic Bay.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 TABLE 1.4 MPS OPERATING CAPACITY FACTOR DURING 2009 (Based on designed electrical rating)
Month ( Unit 2 Percent Capacity Unit 3 Percent Capacity January 98.7% 100.6%
February 98.7% 100.6%
March 98.5% 99.8%
April 98.6% 100.7%
May 98.6% 100.5%
June 98.4% 100.3%
July 26.7%* 99.7%
August 97.9% 98.8%
September 98.0% 99.3%
October 17.9%** 100.2%
November 38.3%** 100.3%
December 99.3% 61.2%*
Annual Average 8
____________80.6% 96.8%
- shutdown for mini-outages these months
- shutdown for refueling during these months The key difference between nuclear power and conventional power is the source of heat used to boil the water. Conventional plants burn fossil fuels in a boiler, while nuclear plants Use uranium fission in a nuclear reactor.
Inside the reactor, a nuclear reaction called fission takes place. Particles, called neutrons, strike the nucleus of a uranium-235 atom, causing it to split into fragments called radioactive fission products. The splitting of the atoms releases both heat and more neutrons. The newly-released neutrons then collide with and split other uranium atoms, thus making more heat and releasing even more neutrons, and on and on until the uranium fuel is depleted or spent. This process is called a chain reaction. When this chain reaction is self sustaining, the reactor is called "critical."
The operation of a nuclear reactor results in the release of small amounts of radioactivity and low levels of radiation. The radioactivity originates from two major sources, radioactive fission products and radioactive activation products. Radioactive fission products, as illustrated in Figure 1.4-1 (Reference 6), originate from the fissioning of the nuclear fuel.
These fission products get into the reactor coolant from their release by minute amounts of uranium on the outside surfaces of the fuel cladding, by diffusion through the fuel pellets and cladding and, on occasion, through defects or failures in the fuel cladding. These fission products circulate along with the reactor coolant water and will deposit on the internal surfaces of pipes and equipment. The radioactive fission products on the pipes and equipment emit radiation. Examples of some fission products are krypton-85 (Kr-85),
strontium-90 (Sr-90), iodine-131 (1-131), xenon-133 (Xe-133), and cesium-137 (Cs-137).
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Nuclear Fission Fission is the splitting of atoms (e.g., Uranium-235) by a neutron to release heat and more neutrons, creating a chain reaction. Radiation and fission products are by-products of the process.
Uranium Radiation Uranium Uranium Fission Products Figure 1.4-1 Radioactive Fission Product Formation 1-5
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Radioactive activation products (see Figure 1.4-2), on the other hand, originate from two sources. The first is by neutron bombardment of the hydrogen, oxygen and other gas (helium, argon, nitrogen) molecules in the reactor cooling water. The second is a result of the fact that the internals of any piping system or component are subject to minute yet constant corrosion from the reactor cooling water. These minute metallic particles (for example: nickel, iron, cobalt, or magnesium) are transported through the reactor core into the fuel region, where neutrons may react with the nuclei of these particles, producing radioactive products. So, activation products are nothing more than ordinary naturally-occurring atoms that are made unstable or radioactive by neutron bombardment. These activation products circulate along with the reactor coolant water and will deposit on the internal surfaces of pipes and equipment. The radioactive activation products on the pipes and equipment emit radiation. Examples of some activation products are manganese-54 (Mn-54), iron-59 (Fe-59), cobalt-60 (Co-60), and zinc-65 (Zn-65).
Oith collision with Co-59 Co..
0-60 Neutron Stable Radioactive Cobalt Nucleus Cobalt Nucleus Figure 1.4-2 Radioactive Activation Product Formation At Millstone Nuclear Power Station there are five independent protective barriers that confine these radioactive materials. These five barriers, which are shown in Figure 1.4-3 (Reference 6), are:
- fuel pellets;
- reactor vessel and associated piping and equipment;
- primary containment and,
- secondary containment (enclosure building).
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 SIMPLIFIED DIAGRAM OF A PRESSURIZED WATER REACTOR Pressurized water reactor-common type of Light Water Reactor (LWR)
WASTE HEAT TO THE ENVIRONMENT Figure 1.4-3 The ceramic uranium fuel pellets provide the first barrier. Most of the radioactive fission products are either physically trapped or chemically bound between the uranium atoms, where they will remain. However, a few fission products that are volatile or gaseous may diffuse through the fuel pellets into small gaps between the pellets and the fuel cladding.
The second barrier, the fuel cladding, consists of zirconium alloy tubes that confine the fuel pellets. The small gaps between the fuel and the cladding contain the noble gases and volatile iodines that are types of radioactive fission products. This radioactivity can diffuse to a small extent through the fuel cladding into the reactor coolant water.
The third barrier consists of the reactor pressure vessel, steel piping and equipment that confine the reactor cooling water. The reactor pressure vessel, which holds the reactor fuel, is typically a steel tank 40 feet high by 14 feet in diameter with walls about five to nine inches thick. These vessels and associated piping provide containment for radioactivity in the primary coolant and the reactor core. However, during the course of operations and maintenance, small amounts of radioactive fission and activation products can escape through valve leaks or upon breaching of the primary coolant system for maintenance.
The fourth barrier is the primary containment. It is a cylindrical enclosure with approximately five-foot thick steel reinforced concrete walls lined by steel on the inside. Small amounts of radioactivity may be released from primary containment during operation to maintain proper containment pressure and during maintenance and refueling outages.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 The fifth barrier is the secondary containment or enclosure building. The enclosure building is a steel building that surrounds the primary containment. This barrier is an additional safety feature at Millstone's reactor units to contain radioactivity that may escape from the primary containment. This enclosure building is equipped with a filtered ventilation system that is used when needed to reduce the radioactivity that escapes from the primary containment.
The five barriers confine most of the radioactive fission and activation products. However, small amounts of radioactivity do escape via mechanical failures and maintenance on valves, piping, and equipment associated with the reactor cooling water system. The small amounts of radioactive liquids and gases that do escape the various containment systems are further controlled by the liquid purification and ventilation filtration systems. Also, prior to a release to the environment, control systems exist to collect and purify the radioactive effluents in order to reduce releases to the environment to as low as is reasonably achievable. The control of radioactive effluents at Millstone Station will be discussed in more detail in the next section.
1.5 Radioactive Effluent Control The small amounts of radioactive liquids and gases that might escape the first two barriers are purified in the liquid and gaseous waste treatment systems, then monitored for radioactivity, and released only if the radioactivity levels are below the federal release limits.
Radioactivity released from the liquid effluent system to the environment is limited, controlled, and monitored by a variety of systems and procedures which include:
- reactor water cleanup system;
- liquid radwaste treatment system;
- sampling and analysis of the liquid radwaste tanks; and,
- liquid waste effluent discharge radioactivity monitor.
The purpose of the reactor water cleanup system is to continuously purify the reactor cooling water by removing radioactive atoms and non-radioactive impurities that may become activated by neutron bombardment. A portion of the reactor coolant water is diverted from the primary coolant system and is directed through ion exchange resins where radioactive elements, dissolved and suspended in the water, are removed through chemical processes.
The net effect is a substantial reduction of the radioactive material that is present in the primary coolant water and consequently the amount of radioactive material that might escape from the system.
Reactor cooling water that might escape the primary cooling system and other radioactive water sources are collected in floor and equipment drains. These drains direct this radioactive liquid waste to large holdup tanks. The liquid waste collected in the tanks is purified again using the liquid radwaste treatment system, which consists of a filter and ion exchange resins.
Processing of liquid radioactive waste results in large reductions of radioactive liquids discharged into Niantic Bay. Wastes processed through liquid radwaste treatment can be purified and when necessary the processed liquid is re-used in plant systems.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Prior to release, the radioactivity in the liquid radwaste tank is sampled and analyzed to determine if the level of radioactivity is below the release limits and to quantify the total amount of radioactive liquid effluent that would be released. If the levels are below the federal release limits, the tank is drained to the liquid effluent discharge header.
This liquid waste effluent discharge line is provided with a shielded radioactivity monitor. This detector is connected to a radiation level meter and a recorder in the Control Room. The radiation alarm is set so that the detector will alarm before radioactivity levels exceed the release limits. The liquid effluent discharge header has an isolation valve. If an alarm is received, the liquid effluent discharge valve will automatically close, thereby terminating the release to the Niantic Bay and preventing any liquid radioactivity from being released that may exceed the release limits. An audible alarm notifies the Control Room operator that this has occurred.
Some liquid waste sources, which have a low potential for containing radioactivity, and/or may contain very low levels of contamination, may be discharged directly to the Long Island Sound. One such source of liquid is the turbine building sump. However, periodic representative samples are collected for analysis of radioactivity content to track the amounts of radioactivity being discharged.
Another means for adjusting liquid effluent concentrations to below federal limits is by mixing plant cooling water from the condenser with the liquid effluents in the discharge canal. This larger volume of cooling water further lowers the radioactivity levels to below the release concentration limits.
The preceding discussion illustrates that many controls exist to reduce the radioactive liquid effluents released to the Niantic Bay to as far below the release limits as is reasonably achievable.
Radioactive releases from the radioactive gaseous effluent system to the environment are limited, controlled, and monitored by a variety of systems and procedures which include:
- containment building ventilation system;
- containment building radioactivity monitors;
- sampling and analysis of containment building vent and purge effluents;
- process gas treatment system;
- auxiliary building (and engineered safeguards and fuel building for Unit 3) ventilation system;
- stack and vent effluent radioactivity monitors;
- sampling and analysis of stack and vent effluents;
- process radiation monitors; and
- steam jet air ejector (SJAE) monitor 1-9
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 The primary sources of gaseous radioactive waste are degassing of the primary coolant, gaseous liquid drains, and gaseous vents. Additional sources of gaseous waste activity include ventilation air released from the auxiliary building and purging and venting of the containment building. The radiation level meter and recorders for the effluent radioactivity monitors are located in the Control Room. The plant process computer aids in tracking the monitor readings. To supplement the information continuously provided by the detector, air samples are taken periodically from the containment, stack and vents. These samples are analyzed to quantify the total amount of tritium and radioactive gaseous and particulate effluents released.
Gases from the primary coolant are held up in waste gas decay tanks for decay at Unit 2.
Gaseous waste at Unit 3 is purified through a process gas system, consisting of high-efficiency particulate air filters and charcoal adsorber beds. Gases from periodic venting of the Unit 2 containment are released through a similar process system (Enclosure Building Filtration System) while gases from the Unit 3 containment vacuum pumps are released without treatment. If necessary, Unit 3 containment air can be filtered by an internal particulate and charcoal treatment system. Containment purges (purge is the forced ventilation process while cont inment vents are pressure releases) for Unit 2 are filtered by high-efficiency particulate filters while at Unit 3 these are not normally filtered. If necessary, particulate and charcoal filters can be used for these purges.
The auxiliary building ventilation system provides for ventilation of the auxiliary building and enclosure building (and service building and contiguous areas, waste disposal building, and fuel building for Unit 3, for Unit 2 these are all part of the auxiliary building). Normally, the air from the ventilation of these areas will exhaust through the ventilation vent (which has a particulate filter for Unit 2). If exhaust from these areas reaches a predetermined level, the ventilation flow can be diverted by operator control to a particulate and charcoal filtration system.
Therefore, for both liquid and gaseous releases, radioactive effluent control systems exist to collect and purify the radioactive effluents in order to reduce releases to the environment to as low as is reasonably achievable. The effluents are always monitored, sampled and analyzed to make sure that radioactivity levels are below the release limits. If the release limits are being approached, isolation valves in some of the waste effluent lines will automatically shut to stop the release, or Control Room operators can implement procedures to ensure that federal regulatory limits are always met.
1-10
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 1.6 Radiological Impact on Humans The final step in the effluent control process is the determination of the radiological dose impact to humans and comparison with the federal dose limits to the public. This step is performed in three stages. As mentioned previously, the purpose of continuous radiation monitoring and periodic sampling and analysis is to measure the quantities of radioactivity being released to determine compliance with the radioactivity release limits. This is the first stage for assessing releases to the environment.
The second stage is calculations of the dose impact to the general public from Millstone Station's radioactive effluents are performed. The purpose of these calculations is to periodically assess the doses to the general public resulting from radioactive effluents to ensure that these doses are being maintained as far below the federal dose limits as is reasonably achievable. This is the second stage for assessing releases to the environment.
The types and quantities of radioactive liquid and gaseous effluents released fr* m Millstone Station during each given year are reported to the Nuclear Regulatory Commis ion annually in the Radiological Effluent Release Report (RERR). Similar to this report, the RERR is submitted annually to the Nuclear Regulatory Commission. Section 5 of this report discusses the detailed dose calculations from the RERR and provides a comparison to REMP dose calculations. The liquid and gaseous effluents were well below the federal release limits and were a small percentage of the MPS REMODCM effluent control limits.
The measurements of the physical and chemical nature of the effluents are used to determine how the radionuclides will interact with the environment and how they can result in radiation exposure to humans. The environmental interaction mechanisms depend upon factors such as the hydrological (water) and meteorological (atmospheric) characteristics in the area. Information on the water flow, wind speed, wind direction, and atmospheric mixing characteristics are used to estimate how radioactivity will distribute and disperse in the ocean and the atmosphere.
The most important type of information that is used to evaluate the radiological impact on humans is data on the use of the environment. Information on fish and shellfish consumption, boating usage, beach usage, locations of cows and goats, locations of residences, locations of gardens, drinking water supplies, and other usage information are utilized to estimate the amount of radiation and radioactivity received by the general public.
The radiation exposure pathway to humans is the path radioactivity takes from its release point at Millstone Station to its effect on man. The movement of radioactivity through the environment and its transport to humans is portrayed in Figure 1.6.
1-11
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 EXAMPLES OF MILLSTONE STATION'S RADIATION EXPOSURE PATHWAYS
. .F
.....F..
. LU.:
................... .E
..I.... N
... 11 .. .
LIQUID ...
EFFLUE
- 3. DIRECT RADIATION
- 4. DIRECT RADIATION
_ (SOIL DEPOSITION)
(AIR SUBMERSION) t*"
- 1. SHORELINE DIRECT RADIATION (FISHING, PICNICING) 5. CONSUMPTION (VEGETATION)
DEPOSITION
- 2. DIRECT RADIATION (IMMERSION IN OCEAN, BOATING, SWIMMING) I L~t~ ~
. CONSUMPTION DEPOSITION (MILK AND MEAT)
INGESTION I3. CONSUMPTION (FISH, SHELLFISH)
Figure 1.6 Radiation Exposure Pathways 1-12
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 There are three major pathways in which liquid effluents affect humans:
" external radiation from liquid effluents that deposit and accumulate on the shoreline;
" external radiation from immersion in ocean water containing radioactive liquids; and,
- internal radiation from consumption of fish and shellfish containing radioactivity absorbed from the liquid effluents.
There are six major ways in which gaseous effluents affect humans:
- external radiation from an airborne plume of radioactivity;
- internal radiation from inhalation of airborne radioactivity;
- external radiation from deposition of radioactive effluents on soil;
- ambient (direct) radiation from contained sources at the power plant;
- internal radiation from consumption of vegestation containing radioactivity deposited on the vegetation from airborne depos tion and absorbed from the soil due to ground deposition of radioactive effluents; nd,
- internal radiation from consumption of milk and meat containing radioactivity deposited on forage that is eaten by cattle and other livestock.
In addition, ambient (direct) radiation emitted from contained sources of radioactivity at MPS contributes to radiation exposure in the vicinity of the plant. For example, small amounts of ambient radiation result from low-level radioactive waste being processed and stored at the site prior to shipping and disposal. Also, the operation of the ISFSI (Independent Spent Fuel Storage Installation, operation began in 2005) results in very small amounts of direct radiation at the site boundary.
The radiological dose impact on humans is based both on effluent analyses and modeling and on direct measurements of radiation and radioactivity in the environment. When MPS-related radioactivity is detected in samples that represent a plausible exposure pathway, the resulting dose from such exposure is assessed (see Sections 4 and 5). However, the operation of Millstone Power Station results in releases of only small amounts of radioactivity, and, as a result of dilution in the atmosphere and ocean, even the most sensitive radioactivity measurement and analysis techniques cannot usually detect these tiny amounts of radioactivity above that which is naturally present in the environment. Therefore, radiation doses are calculated using radioactive effluent release data and computerized dose calculations that are based on conservative NRC-recommended models that tend to result in over-estimates of the resulting dose. These computerized dose calculations are performed by Dominion Nuclear personnel. These computer codes use the guidelines and methodology set forth by the NRC in Regulatory Guide 1.109 (Reference 7). The dose calculations are documented and described in detail in the Millstone Nuclear Power Station's Radiological Effluent Monitoring and Offsite Dose Calculation Manual (Reference 8), which has been reviewed by the NRC.
It should be emphasized that because of the conservative assumptions made in the computer code calculations, the maximum hypothetical dose to an individual is considerably higher than the dose that would actually be received by a real individual.
1-13
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 After dose calculations are performed, the results are compared to the federal dose limits for the public. The two federal agencies that are charged with the responsibility of protecting the public from radiation and radioactivity are the Nuclear Regulatory Commission (NRC) and The Environmental Protection Agency (EPA).
The NRC, in 10CFR 20.1301 (Reference 9) limits the levels of radiation to unrestricted areas resulting from the possession or use of radioactive materials such that they limit any individual to a dose of:
- less than or equal to 100 mrem per year to the total body.
In addition to this dose limit, the NRC has established design objectives for nuclear plant licensees. Conformance to these guidelines ensures that nuclear power reactor effluents are maintained as far below the legal limits as is reasonably achievable.
T7e NRC, in 10CFR 50 Appendix I (Reference 10) establishes design objectives for the dose tc a member of the general public from radioactive material in liquid effluents released to unrestricted areas to be limited to:
- less than or equal to 3 mrem per year to the total body; and,
- less than or equal to 10 mrem per year to any organ.
The air dose due to release of noble gases in gaseous effluents is restricted to:
- less than or equal to 10 mrad per year for gamma radiation; and,
- less than or equal to 20 mrad per year for beta radiation.
The dose to a member of the general public from iodine-131, tritium, and all particulate radionuclides with half-lives greater than 8 days in gaseous effluents is limited to:
- less than or equal to 15 mrem per year to any organ.
The EPA, in 40CFR190.10 Subpart B (Reference 11), sets forth the environmental standards for the uranium fuel cycle. During normal operation, the annual dose to any member of the public, at or beyond the site boundary, from the entire uranium fuel cycle shall be limited to:
- less than or equal to 25 mrem per year to the total body;
- less than or equal to 75 mrem per year to the thyroid; and,
- less than or equal to 25 mrem per year to any other organ.
The summary of the 2009 radiological impact for Millstone Station and comparison with the EPA dose limits and Appendix I guidelines is presented in Section 5 of this report.
The third stage of assessing releases to the environment is the Radiological Environmental Monitoring Program (REMP). The description and results of the REMP at Millstone Power Station during 2009 is discussed in Sections 2 through 4 of this report.
1-14
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009
- 2. PROGRAM DESCRIPTION 2.1 Sampling Schedule and Locations The sample locations and the sample types and frequency of analysis are given in Tables 2-1 and 2-2 and Figures 2.1, 2.2 and 2.3. The program as described on Table 2-2 only lists the required samples as specified in the Radiological Effluent Monitoring and Offsite Dose Calculation Manual. However, in order to identify the locations of the extra samples, all locations (both required and extra) are listed in Table 2-1 and shown on the figures.
2-1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 2 Environmental Monitorina Proaram SamDlinq TyDes and Locations LDirection & eDoistance Nu` mý'ber* Location Name FrmRelease. Point** SampleTypes On-site - Old Millstone Rd. 0.6 Mi, NNW TLD, Air Particulate, Iodine, Vegetation 2-I On-site - Weather Shack 0.3 Mi, S TLD, Air Particulate, Iodine On-site - Bird Sanctuary 0.3 Mi, NE TLD, Air Particulate, Iodine, Soil 4-i On-site - Albacore Drive 1.0 Mi, N TLD, Air Particulate, Iodine, Soil MP3 Discharge 0.1 Mi, SSE TLD 6-1 I : Quarry Discharge 0.3 Mi, SSE TLD Environmental Lab Dock 0.3 Mi, SE TLD 9-I
.7 7i. "i i Environmental Lab 0.3 Mi, SE TLD Bay Point Beach 0.4 Mi, W TLD Pleasure Beach 1.2 Mi, E TLD, Air Particulate, Iodine, Vegetation New London Country Club 1.6 Mi, ENE TLD, Air Particulate, Iodine Fisher's Island, NY 8.0 Mi, ESE TLD Mystic, CT 11.5 Mi, ENE TLD
.8,c 14-C,1, . , Ledyard, CT 12.0 Mi, NE TLD, Soil Norwich, CT 14.0 Mi, N TLD, Air Particulate, Iodine Old Lyme, CT 8.8 Mi, W TLD 1.27C1. . , Site Boundary 0.5 Mi, NE Vegetation 15-C.
.:§1
'37:
Goat Location #1 2.0 Mi, N Milk 1-7 Goat Location #2 2.7 Mi, NE Milk 27-I Goat Location #4 29.0 Mi, NNW Milk Within 10 Miles Within 10 Miles Fruits & Vegetables Beyond 10 Miles Beyond 10 Miles Fruits & Vegetables Niantic 1.7 Mi, WNW TLD, Air Particulate, Iodine Two Tree Island 0.8 Mi, SSE Mussels
- 29-X1 '.'" West Jordan Cove 0.4 Mi, NNE Clams West Jordan Cove 0.4 Mi, NNE Bottom Sediment, Fucus Niantic Shoals 1.5 Mi, NNW Mussels Niantic Shoals 1.8 Mi, NW Bottom Sediment, Oysters 25-IX Niantic Shoals 1.8 Mi, NW Scallops 26-C Vicinity of Discharge < 0.1 Mi Bottom Sediment, Oysters, Lobster, Fish, Seawater 27-Ix Vicinity of Discharge < 0.1 Mi Fucus Seaside Point 1.8 Mi, ESE Bottom Sediment Seaside Point 1.8 Mi, ESE Fucus 24-Ce, Thames River Yacht Club 4.0 Mi, ENE Bottom Sediment Thames River Yacht club 4.0 Mi, ENE Oysters Niantic Bay 0.3 Mi, WNW Lobster, Fish Niantic Bay 0.3 Mi, WNW Bottom Sediment, Clams, Fucus Black Point 3.0 Mi, WSW Oysters Black Point 3.0 Mi, WSW Fucus Giant's Neck 3.5 Mi, WSW Bottom Sediment, Oysters, Seawater
- Key: I - Indicator C - Control X - Extra - sample not required by REMODCM
- The release points are the Site Stack for terrestrial locations and the quarry cut for aquatic locations.
2-2
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 LoainDirection & Distance:..`.
Nu'mb~e'r Location.Namrei From 'Release, Point: 7-Sample .Types
'37-X Giant's Neck 3.5 Mi, WSW Lobster
38 I Waterford Shellfish Bed #1 1.0 Mi, NW Clams 39X.:. Jordon Cove Bar 0.8 Mi, NE Bottom Sediment, Clams 4 '-X Quarry Fish 41-I Myrock Avenue 3.2 Mi, ENE TLD
.42-I. Billow Road 2.4 Mi, WSW TLD 43-I 4 Black Point 2.6 Mi, SW TLD 44-I Onsite - Schoolhouse 0.1 Mi, NNE TLD 45'1,.-' Onsite Access Road 0.5 Mi, NNW TLD 46 *" Old Lyme - Hillcrest Ave. 4.6 Mi, WSW TLD 47- :: East Lyme - W. Main St. 4.5 Mi, W TLD
-I.. " East Lyme - Corey Rd. 3.4 Mi, WNW TLD 4-,I , East Lyme - Society Rd. 3.6 Mi, NW TLD 5 .i. East Lyme - Manwaring Rd. .1 Mi, W TLD NW 51- . East Lyme - Smith Ave. 1.5 Mi, TLD 52-I Waterford - River Rd. 1 .1 Mi, NNW TLD 3Waterford - Gardiners Wood 1.4 Mi, NNE TLD Rd.
'55-I Waterford - Magonk Point 1.8 Mi, ESE TLD 56-I" New London - Mott Ave. 3.7 Mi, E TLD 57-i New London - Ocean Ave. 3.6 Mi, ENE TLD 59-I Waterford -Miner Ave. 3.4 Mi, NNE TLD 60-11 Waterford - Parkway South 4.0 Mi, N TLD 61- *iWaterford - Boston Post Rd. 4.3 Mi, NNW TLD 62-*I[.. East Lyme - Columbus Ave. 1.9 Mi, WNW TLD 63-i* Waterford - Jordon Cove Rd. 0.8 Mi, NE TLD 6+",-I : Waterford - Shore Rd. 1.1 Mi, ENE TLD 65-1 Waterford - Bank St. 3.2 Mi, NE TLD
. .66-X NAP Parking Lot - Fitness 0.4 Mi, NW TLD Center 67.X Golden Spur 4.7 Mi, NNW Bottom Sediment 69-X Pleasure Beach 0.8 Mi, E Bottom Sediment 1-MW-XFMR-03 Onsite Well Water 72-I MW-GPI-1 Onsite Well Water
ý73-X Site Switchyard Fence 0.3 Mi, N TLD
.7.4-XBall Field Foul Pole 0.6 Mi, N TLD
< Waterford - Windward Way &
,5-X 0.5 Mi, NE TLD Shotgun 76-X, ISFSI-1 Up-gradient of ISFS5 Well Water 77:-X ISFSI-2A Down-gradient of ISFSI Well Water
,7" ý7ISFSI-3 Down-gradient of ISFSI Well Water i79!4 M3-MW-1 Onsite Well Water S1 2-MW-2 Onsite Well Water S2-MW-1 Onsite Well Water 82- I MW-GPI-2 Onsite Well Water 83-I MW-GPI-3 Onsite Well Water 84-1 MW-GPI-4 Onsite Well Water MW-GPI-5 Onsite Well Water
'86d MW-GPI-6 Onsite Well Water
ý88-,X DEP Dock Onsite Oysters Thames River 4 Mi. E Fucus
- Key: I - Indicator C - Control X - Extra - sample not required by the REMODCM
- The release points are the Site Stack for terrestrial locations and the quarry cut for aquatic locations.
2-3
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 2-2 Required Sampling Frequency & Type of Analysis ExP'Sposue- No46
.. Sampling._r& Cý. ,o'Iý.ýollection. Type ofAnalysis adrSaple, ocationt Frequency
- 1. Gamma Dose 40a Quarterly Gamma Dose - Quarterly Environmental TLD
- 2. Airborne Particulate 8 Continuous sampler - weekly Gross Beta - Weekly filter change Gamma Spectrum - Quarterly on composite (by location), and on individual sample if gross beta is greater than 10 times the mean of the weekly control station's gross beta results
- 3. Airborne Iodine 8 Continuous sampler - weekly 1-131 - Weekly canister change
- 4. Vegetation 5 One sample near middle and Gamma Isotopic on each sample one near end of growing season
- 5. Milk 2 Semimonthly when animals are Gamma Isotopic and 1-131 on each on pasture; monthly at other sample; Sr-89 and Sr-90 on times. quarterly composite 5a. Pasture Grass 3 Sample as necessary to Gamma Isotopic and 1-131 on each substitute for unavailable milk sample
- 6. Sea Water 2 Continuous sampler with a Gamma Isotopic and Tritium on monthly collection at indicator each sample.
location. Quarterly at control location - Composite of 6 weekly grab samples.
6a. Well Water 6 Semiannual Gamma Isotopic and Tritium on each sample
- 7. Bottom Sediment 5 Semiannual Gamma Isotopic on each sample 7a. Soil 3 Annually Gamma Isotopic on each sample
- 8. Fin Fish - Flounder 2 Quarterly Gamma Isotopic on each sample and one other type of edible fin fish
- 9. Mussels 2 Quarterly Gamma Isotopic on each sample (edible portion)
- 10. Oysters 4 Quarterly Gamma Isotopic on each sample (edible portion)
- 11. Clams 2 Quarterly Gamma Isotopic on each sample (edible portion)
- 12. Lobster 2 Quarterly Gamma Isotopic on each sample (edible portion) I I I (a) Two or more TLDs or TLD with two or more elements per location.
2-4
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 L.ong island Solluid j-j TLD Monitoring (only)
Terrestrial Monitoring (milk, grass, fruit & vebetables, soil, or leaves)
- Aquatic Monitoring (seawater, sediment, flora, fish, mussel, oyster, clam, or lobster) 2-5
Dominion Nuclear Connecticut, I.nc. Annual Radiological Environmental Operating Report Millstone Station 2009 Figure 2.2 Millstone Sampling Locations (Within 2 miles) c-i N
- 53
[A
[
Niantic Bay Cove El ft I.
0.5 Miles -Totree island 8 Channell M# TLD Monitoring (only)
TLD and Air Monitoring (particulates & iodine)
Terrestrial Monitoring (milk, grass, fruit & vegetables, soil, or leaves) OtT Isl.
- Aquatic Monitoring (seawater, sediment, flora, fish, mussel, oyster, clam, or lobster) 2-6
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Figure 2.3 Millstone Sampling WeUs--
2-7
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 2.2 Samples Collected During Report Period The following table summarizes the number of samples of each type collected and analyzed during 2009:
- ~~Number of Nmeo Techncal......Technical.
Sarple Type ,- Specification SpcfcT inNubro "Reiuied am~es equired Samples ExrSmpe Gamma Exposure 160 160 16 (Environmental TLD)
Air Particulates 416 416 0 Air Iodine 416 416 0 Soil 3 3 0 Goat Milk 38 131 0 2
Pasture Grass Variable 25 0 Fruit and Vegetables 8 8 1 Broad Leaf Vegetation 6 6 12 Well Water 12 12 41 Sea Water 16 16 0 Bottom Sediment 10 10 10 Aquatic Flora 0 0 24 Fish 16 12' 3 Mussels 8 63 0 Oysters 16 16 4 Clams 8 8 8 Lobster 8 8 4 Total All Types 1,141 1,135 123 Pasture grass sampled as necessary to substitute for unavailable milk. Hay or grain was substituted when grass was not available.
3 Depends upon availability of goat milk samples 3 Due to sample unavailability, not all required fish and shellfish samples could be obtained (see Notes at end of Section 3 for details) 2-8
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009
- 3. RADIOCHEMICAL RESULTS 3.1 Summary Table In accordance with the Radiological Effluent Monitoring and Offsite Dose Calculation Manual (REMODCM),Section I.F.1, a summary table of the radiochemical results has been prepared and is presented on the following pages.
The mean and range recorded are based only upon detectable measurements. The parentheses indicate the fraction of the measurements that are considered above the detection limit for each individual analysis.
A more detailed analysis of the data is given in Section 4.0 where a discussion of the variations in the data explains many aspects that are not evident in the Summary Table because of the basic limitation of data summaries. The data summaries include the extra ("X") samples collected throughout the year. These samples are taken to enhance the monitoring program, or are the results of special studies.
3-1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Indicator Coto 1on Medium or Analysis Locations Location with Highest Mean Control Non-e Medum r LcatonsLocations Routine Pathway ,* Reported Sampled Total LLD Mean Name Distance Mean Mean Measure]
(Units) Type No Range Direction Range Range ments TLD Gamma 176 - 7.79 (156/156) 08 0.3 mi 11.1 (4/4) 8.23 (20/20)
(uR/hr) Dose (4.52-11.6) SE (10-11.6) (5.76-10.7)
AP Gross Beta Gross 416 10 20.3 (364/364) 11 1.6 mi 20.9.(52/52) 20.6 (52/52)
(1E-3 pCi/m3) Beta (5.1-41.5) -ENE (7.5-38.2) (6.8-37.1)
Air Iodine 1-131 416 70 (0/364) < LLD (0/52)
(IE-3 pCi/m3)
AP Gamma Ba-140 32 ~0/28) f - - < LLD (0/4)
(1E-3 pCi/m3)
Be-7 32 107(28/28) 27 1.7 mi 117(4/4) 93.8 (4/4)
(72-154) WNW (88-149) (82-112)
Ce-141 32 (0/28) - - ,< LLD (0/4)
Ce-144 32 (0/28) - - < LLD (0/4)
Co-58 32 (0/28) - - < LLD (0/4)
Co-60 32 (0/28) - - < LLD (0/4)
Cr-51 32 (0/28) - - < LLD (0/4)
Cs-1 34 32 50 (0/28) - - < LLD (0/4)
Cs-1 37 32 60 (0/28) - - < LLD (0/4)
Mn-54 32 (0/28) - - <LLD (0/4)
Nb-95 32 (0/28) - - <.LLD (0/4)
Ru-103 32 (0/28) - - < LLD (0/4)
Ru-106 32 (0/28) < LLD ý0/4)
Zr-95 32 (0/28) < LLD (0/4)
A: 1 :
Dominion Nuclear Connecticut, Inc. Annual rKavu ,dc, Environu,,me,,tal Operating Report 2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Indicator CL Medium or Analysis Locations Location with Highest Mean Lo(
Pathway No Mean Distance Mean I Sampled (Units) Type TtNo tal LLD Range Namn Name Distan Direction Ran Range FF Soil Be-7 - (0/2) < LLD (0/1)
(pCi/g dry)
Ce-141 - (0/2) < LLD (0/1)
Ce-144 - (0/2) < LLD (0/1)
Co-58 - (0/2) < LLD (0/1)
Cr-51 - (0/2) < LLD (0/1)
Cs-I 34 0.15 (0/2) < LLD (0/1)
Cs-1 37 0.18 0.593 (2/2) 14-C 12.0 mi 1.19(1/1) 1.19(1/1)
(0.455-0.73) NE (1.19-1.19) (1.19-1.19)
Fe-59 - (0/2) < LLD (0/1)
- 12.5 (2/2)
K-40 03 0.3 mi 13.2 (1/1) 11.2(1/1)
(11.8-13.2) NE (13.2-13.2) (11.2-11.2)
Nb-95 - (0/2) < LLD (0/1)
Ru-1 03 - (0/2) < LLD (0/1)
Ru-106 - (0/2) < LLD (0/1)
Sb-125 - (0/2) < LLD (0/1)
Th-228 - 0.965 (2/2) 14-C 12.0 mi 1.5(1/1) 1.5(1/1)
(0.87-1.06) NE (1.5-1.5) (1.5-1.5)
Zn-65 - (0/2) < LLD (0/1)
Zr-95 - (0/2) < LLD (0/1)
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Control Non-Medium or Locations Locations Routine Sampled (Units) Type Total LLD Mean Name Distance Mean Mean Measure.
I No Range N Direction Range Range ments Goat Milk Ba-1 40 13 70 (0/6) < LLD (0/7)
(pCi/L)
Cs-1 34 13 15 (0/6) S- < LLD (0/7)
Cs-137 13 18 17(1/6) 21 2.0 mi 17(1/6) (0/7)
(17-17) N (17-17) 1-131 13 1 (0/6) -- < LLD (0/7)
K-40 13 - 1332 (6/6) 24-C 29.0 mi 1516 (7/7) 1516 (7/7)
(1010-1740) NNW (1230-1790) (1230-1790)
La-140 13 25 (0/6) < LLD (0/7)
Sr-89 5 - (0/2) - < LLD (0/3)
Sr-90 5 - 1.7(1/2) 24-C 29.0 mi 2.85(2/3) 2.85 (2/3)
(1.7-1.7) NNW (2.2-3.5) (2.2-3.5)
Pasture Grass Ba-140 25 - (0/13) S- < LLD (0/12)
(Hay)
(pCi/g dry)
Be-7 25 - 4.23 (5/13) 21 2.0 mi 4.23(5/13) 2.15 (10/12)
(0.57-7.14) N (0.57-7.14) (0.75-8.26)
Ce-141 25 - (0/13) S- < LLD (0/12)
Ce-144 25 - (0/13) S- < LLD (0/12)
Co-58 25 - (0/13) S- < LLD (0/12)
Co-60 25 - (0/13) S- < LLD (0/12)
Cr-51 25 - (0/13) S- < LLD (0/12)
Cs-134 25 0.06 (0/13) S- < LLD (0/12)
Cs-137 25 0.08 0.084 (1/13) 21 2.0 mi 0.084 (1/13) 0.05(1/12)
(0.084-0.084) N (0.084-0.084) (0.05-0.05)
Fe-59 25 - (0/13) - < LLD (0/12) 3-4
Annual Radiological Environmental Operating Report Dominion Nuclear Connecticut, Inc.
2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 IIndicatorJC Analysis iLocations Location with Highest Mean Lc Type Total LLD Mean Name Distance Mean I No Range I Direction Range I Pasture Grass 1-131 25 0.06 (0/13) < LLD (0/12)
(Hay)
(pCi/g dry)
K-40 25 - 8.83 (13/13) 21 2.0 mi 8.83 (13/13) 6.79 (12/12)
(4.47-15.6) N (4.47-15.6) (3.94-11.5)
La-140 25 - (0/13) S- < LLD (0/12)
Mn-54 25 - (0/13) - < LLD (0/12)
Nb-95 25 - (0/13) - < LLD (0/12)
Ru-1 03 25 - (0/13) - < LLD (0/12)
Ru-1 06 25 - (0/13) - < LLD (0/12)
Sb-125 25 - (0/13) - < LLD (0/12)
Th-228 25 - (0/13) - < LLD (0/12)
Zn-65 25 - (0/13) - < LLD (0/12)
Zr-95 25 - (0/13) - < LLD (0/12)
Well Water Ba-1 40 53 60 (0/53) - < LLD (0/0)
(pCi/L)
Be-7 53 - (0/53) - < LLD (0/0)
Co-58 53 15 (0/53) - < LLD (0/0)
Co-60 53 15 (0/53) - < LLD (0/0)
Cr-51 53 - (0/53) - < LLD (0/0)
Cs-134 53 15 (0/53) - < LLD (0/0)
Cs-137 53 18 (0/53) - < LLD (0/0) 3-5
Ann".,I D~iifc ,Init-ol l Pnirnnmmnt al Operating Report Dominion Nuclear Connecticut, Inc. .. . . . . ............
2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Analysis Locaton Location with Highest Mean Medium or Locations Lc Pathway *Distance Mean Sampled (Units) TypeTye Tota Total LLD RLMangesace Mean Name Direction Ma Range Well Water Fe-59 53 30 (0/53) < LLD (0/0)
(pCi/L)
H-3 53 2000 (0/53) < LLD (0/0) 1-131 53 15 (0/53) < LLD (0/0)
K-40 53 - 49 (1/53) 79 49(1/5) (0/0)
(49-49) (49-49)
La-140 53 15 (0/53) < LLD (0/0)
Mn-54 53 15 (0/53) " LLD (0/0)
Nb-95 53 15 (0/53) < LLD (0/0)
Ru-1 03 53 - (0/53) < LLD (0/0)
Ru-1 06 53 - (0/53) < LLD (0/0)
Sb-125 53 - (0/53) < LLD (0/0)
Sr-89 53 - (0/53) < LLD (0/0)
Th-228 53 - (0/53) < LLD (0/0)
Zn-65 53 30 (0/53) < LLD (0/0)
Zr-95 53 30 (0/53) " LLD (0/0) 3-6
Annual Radiological Environmental Operating Report Dominion Nuclear Connecticut, Inc.
2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339
. Indicator I . . -....
Fruits & Ba-140 9 - (0/5) < LLD (0/4)
Vegetables (pCi/g wet)
Be-7 - (0/5) - < LLD (0/4)
Ce-141 - (0/5) - < LLD (0/4)
Ce-144 - (0/5) - < LLD (0/4)
Co-58 - (0/5) - < LLD (0/4)
Cr-51 - (0/5) - < LLD (0/4)
Cs-1 34 0.06 (0/5) - < LLD (0/4)
Cs-1 37 0.08 (0/5) - < LLD (0/4)
Fe-59 - (0/5) - < LLD (0/4) 1-131 0.06 (0/5) - < LLD (0/4)
K-40 - 2.06 (4/5) 26-C 10+ mi 2.23 (4/4) 2.23 (4/4)
(0.85-3.97) (1.02-4.73) (1.02-4.73)
La-140 - (0/5) - < LLD (0/4)
Nb-95 (0/5) - < LLD (0/4)
Ru-103 (0/5) - < LLD (0/4)
Ru-106 (0/5) - < LLD (0/4)
Sb-125 (0/5) - < LLD (0/4) 3-7
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Anl ssIndicator Locations Location with Highest Mean I Lo C
Analysis Loain I L Type Total No LLD Mean Distance Mean Range Name Direction Range Fruits & Th-228 9 - (0/5) " LLD (0/4)
Vegetables (pCi/g wet)
Zn-65 9 - (0/5) < LLD (0/4)
Zr-95 9 - (0/5) " LLD (0/4)
Broadlaaf Ba-140 18 - (0/18) < LLD (0/0)
Vegeta ion (pCi/g wet)
Be-7 18 - 1.19(16/18) 17 0.5 mi 1.39 (5/6) (0/0)
(0.42-2.21) NE (0.42-2.16)
Ce-141 18 - (0/18) - < LLD (0/0)
Ce-144 18 (0/18) - < LLD (0/0)
Co-58 18 (0/18) - < LLD (0/0)
Cr-51 18 - (0/18) - < LLD (0/0)
Cs-134 18 0.06 (0/18) - < LLD (0/0)
Cs-1 37 18 0.08 (0/18) - < LLD (0/0)
Fe-59 18 - (0/18) - '< LLD (0/0) 1-131 18 0.06 (0/18) - < LLD (0/0)
K-40 18 - 3.46 (18/18) 10 1.2 m! 3.54(6/6) (0/0)
(2.53-4.44) E (3.05-4.07)
La-140 18 - (0/18) < LLD (0/0)
Nb-95 18 - (0/18) < LLD (0/0) 3-8
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Control Non-Medium or Locations Locations Routine Pathway Sampled (Units) Type Total LLD
[ Mean Name Distance Reported Mean Mean Measuren No Range Direction Range Range ments Broadleaf Ru-103 18 (0/18) < LLD (0/0)
Vegetation (pCi/g wet)
Ru-1 06 18 - (0/18) < LLD (0/0)
Sb-125 18 - (0/18) - - < LLD (0/0)
Th-228 18 - 0.21 (1/18) 17 0.5 mi 0.21 (1/6) (0/0)
(0.21-0.21) NE (0.21-0.21)
Zn-65 18 (0/18) - - < LLD (0/0)
Zr-95 18 (0/18) - - < LLD (0/0)
Sea Water Ba-1 40 16 60 (0/12) - - < LLD (0/4)
(pCi/L)
Be-7 16 - (0/12) - - < LLD (0/4)
Co-58 16 15 (0/12) - - < LLD (0/4)
Co-60 16 15 (0/12) - - < LLD (0/4)
Cr-51 16 - (0/12) - - < LLD (0/4)
Cs-134 16 15 (0/12) < LLD (0/4)
Cs-137 16 18 (0/12) < LLD (0/4)
Fe-59 16 30 (0/12) - < LLD (0/4)
H-3 16 2000 848(4/12) 32 848 (4/12) (0/4)
(410-1910) (410-1910) 1-131 16 15 (0/12) -- < LLD (0/4)
K-40 16 - 286 (12/12) 32 286(12/12) 279 (4/4)
(236-362) (236-362) (245-302)
La-140 16 15 (0/12) - < LLD (0/4) 3-9
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Control Non-Medium or Locations Locations Routine Pathway Sampled '
- I Reported (Units) Type Total LLD Mean Name Distance Mean Mean Measure-No Range N Direction Range Range ments Sea Water Mn-54 16 15 (0/12) - < LLD (0/4)
(pCi/L)
Nb-95 16 15 (0/12) S- < LLD (0/4)
Ru-103 16 - (0/12) S- < LLD (0/4)
Ru-106 16 - (0/12) S- < LLD (0/4)
Sb-1 25 16 - (0/12) S- < LLD (0/4)
Th-228 16 - (0/12) S- < LLD (0/4)
Zn-65 16 30 (0/12) S- < LLD (0/4)
Zr-95 16 30 (0/12) S- < LLD (0/4)
Bottom Sediment Ag-110m 20 - (0/18) S- < LLD (0/2)
(pCi/g dry)
Be-7 20 - (0/18) S- < LLD (0/2)
Co-58 20 - (0/18) S- < LLD (0/2)
Co-60 20 - (0/18) S- < LLD (0/2)
Cr-51 20 - (0/18) S- < LLD (0/2)
Cs-1 34 20 0.15 (0/18) S- < LLD (0/2)
Cs-1 37 20 0.18 0.153 (1/18) 67-X 4.7 mi 0.153(1/2) (0/2)
(0.153-0.153) NNW (0.153-0.153)
Fe-59 20 - (0/18) < LLD (0/2) 1-131 20 - (0/18) - < LLD (0/2)
K-40 20 - 15.2 (18/18) 12 9-X 0.4 mi 18.1 (2/2) 14.2 (2/2)
(9.5-20.1) NNE (16-20.1) (12.8-15.5)
Mn-54 20 - (0/18) < LLD (0/2) 3-10
Annual Radiological Environmental Operating Report Dominion Nuclear Connecticut, Inc.
2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Indicator C Locations Location with Highest Mean Lo Analysis Total LLD Mean Distance Mean I Type No Range Name Direction Range I Bottom Sediment Nb-95 20 - (0/18) < LLD (0/2)
(pCi/g dry)
Ru-1 03 20 - (0/18) " LLD (0/2)
Ru-106 20 - (0/18) < LLD (0/2)
Sb-125 20 < LLD (0/2)
Th-228 20 0.964 31 1.8 mi 2.71 (1/2) (0/2)
(11/18) NW (2.71-2.71)
(0.25-2.71)
Zn-65 20 (0/18) < LLD (0/2)
Zr-95 20 (0/18) < LLD (0/2)
Aquatic Flora Ag- 24 (0/20) " LLD (0/4)
(pCi/g wet)
Be-7 24 (0/20) < LLD (0/4)
Co-58 24 (0/20) < LLD (0/4)
Cr-51 24 (0/20) < LLD (0/4)
Cs-134 24 (0/20) < LLD (0/4)
Cs-1 37 24 (0/20) < LLD (0/4)
Fe-59 24 (0/20) < LLD (0/4) 1-131 24 (0/20) < LLD (0/4)
K-40 24 - 6.64 32-X 7.05(4/4) 5.93 (4/4)
(20/20) (6.12-8.3) (5.06-6.5)
(5.73-8.3)
Nb-95 24
- (0/20) < LLD (0/4) 3-11
Annual Radiological Environmental Operating Report Dominion Nuclear Connecticut, Inc.
2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Indicator Co Analysis Locations Location with Highest Mean Loco Total LLD Mean Distance Mean M IypeNo Range Name Direction Range Rz Aquatic Flora Ru-103 - (0/20) " LLD (0/4)
(pCi/g wet)
Ru-1 06 - (0/20) < LLD (0/4)
Sb-125 - (0/20) < LLD (0/4)
Zn-65 -. (0/20) " LLD (0/4)
Zr-95 (0/20) < LLD (0/4)
Fish-Flounder Ag-110m (0/6) < LLD (0/0)
(pCi/g wet)
Be-7 - (0/6) < LLD (0/0)
Co-58 0 .13 (0/6) < LLD (0/0)
Cr-51 - (0/6) < LLD (0/0)
Cs-134 0 .13 (0/6) < LLD (0/0)
Cs-1 37 0 .15 (0/6) < LLD (0/0)
Fe-59 0 .26 (0/6) < LLD (0/0) 1-131 - (0/6) < LLD (0/0)
K-40 - 3.77 (6/6) 32 3.78 (3/3) (0/0)
(3.27-4.07) (3.47-4.05)
Nb-95 - (0/6) < LLD (0/0)
Ru-103 6 - (0/6) < LLD (0/0)
Annual Radiological Environmental Operating Report Dominion Nuclear Connecticut, Inc.
2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 1 Indicator Co Loc Analysis Locations Location with Highest Mean LLD Mean Name Distance Mean M ype Total No Range I Direction Range R.
Fish-Flound er Ru-1 06 - (0/6) - < LLD (0/0)
(pCi/g wet)
Sb-125 - (0/6) - < LLD (0/0)
Zn-65 0.26 (0/6) - < LLD (0/0)
Zr-95 - (0/6) - < LLD (0/0)
Fish-Other .< LLD Ag-11im (0/9) (0/0)
(pCi/g wet)
Be-7 - (0/9) - < LLD (0/0)
Co-58 0.13 (0/9) - < LLD (0/0)
Co-60 0.13 (0/9) - < LLD (0/0)
Cr-51 - (0/9) - < LLD (0/0)
Cs-1 34 0.13 (0/9) - < LLD (0/0)
Cs-137 0.15 (0/9) - < LLD (0/0)
Fe-59 0.26 (0/9) - < LLD (0/0) 1-131 - (0/9) - < LLD (0/0)
K-40 - 4 (9/9) 32 4.18 (3/3) (0/0)
(3.2-5.2) (3.2-4.7)
Mn-54 0.13 (0/9) - < LLD (0/0)
Nb-95 - (0/9) - < LLD (0/0)
Ru-1 03 - (0/9) - < LLD (0/0)
Ru-106 - (0/9) - < LLD (0/0) 3-13
Annual Radiological Environmental Operating Report Dominion Nuclear Connecticut, Inc.
Millstone Station 2009 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Indicator Co Analysis Locations Location with Highest Mean Loco rype Total LLD Mean Name Distance Mean M No Range N Direction Range Re Fish-Other Sb-125 (0/9) S- < LLD (0/0)
(pCi/g wet)
Th-228 - (0/9) - - < LLD (0/0)
Zn-65 0.26 (0/9) - - < LLD (0/0)
Zr-95 - (0/9) - - < LLD (0/0)
Mussels (pCi/g wet)
Ag-11Orn (0/6) - - < LLD I0/0)
Be-7 - (0/6) - - < LLD (0/0)
Co-58 0.13 (0/6) - - < LLD (0/0)
Co-60 0.13 (0/6) - - < LLD (0/0)
Cr-51 - (0/6) - - < LLD (0/0)
Cs-1 34 0.13 (0/6) - - < LLD (0/0)
Cs-137 0.15 (0/6) - - < LLD (0/0)
Fe-59 0).26 (016) - - < LLD (0/0) 1-131 - (0/6) - - < LLD (0/0)
K-40 - 1.72(6/6) 30 1.5 mi 1.88(4/4) (0/0)
(1.33-2.08) NNW (1.75-2.08)
Mn-54 6 0.13 (0/6) - - < LLD (0/0)
Nb-95 6 - (0/6) - - < LLD (0/0)
Ru-103 6 - (0/6) - - < LLD (0/0)
Ru-106 6 - (0/6) - - < LLD (0/0)
Sb-125 6 - (0/6) - - <LLD (0/0)
'1 4 A
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Medim or Analysis Idctr Location with Highest Mean cnrl Nn Indicator Control Non-Medium or Locations Locations Routine Pathway
- Reported Sampled (Units) Type Total LLD Mean Name Distance Mean Mean Measure-No Range Direction Range Range ments Mussels Th-228 6 - (0/6) -< LLD (0/0)
(pCi/g wet)
Zn-65 6 0.26 (0/6) - - < LLD (0/0)
Zr-95 6 - (0/6) - - < LLD (0/0)
Oysters Ag-11Om 20 (0/16) - - < LLD (0/4)
(pCi/g wet)
Be-7 20 - (0/16) - - < LLD (0/4)
Co-58 20 0.13 (0/16) - - < LLD (0/4)
Co-60 20 0.13 (0/16) - - < LLD (0/4)
Cr-51 20 - (0/16) - - < LLD (0/4)
Cs-1 34 20 0.13 (0/16) - - < LLD (0/4)
Cs-137 20 0.15 (0/16) - - < LLD (0/4)
Fe-59 20 0.26 (0/16) - - < LLD (0/4) 1-131 20 - (0/16) - - < LLD (0/4)
K-40 20 - 1.88 (16/16) 37-C 3.5 mi 2.22 2.22 (4/4)
(1.1-2.57) WSW (4/4) (2.07-2.48)
Mn-54 20 0.13 (0/16) < LLD (0/4)
Nb-95 20 (0/16) < LLD (0/4)
Ru-1 03 20 (0/16) <LLD (0/4)
Ru-106 20 (0/16) < LLD .(0/4)
Sb-125 20 - (0/16) < LLD (0/4)
Th-228 20 - (0/16) <LLD (0/4) 3-15
Annual Radiological Environmental Operating Report Dominion Nuclear Connecticut, Inc.
2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339 Indicator ICo Loco Analysis Locations Location with Highest Mean Total LLD Mean Name Distance Mean M rype No Range I Direction Range Re Oysters Zn-65 20 0.26 (0/16) - < LLD (0/4)
(pCi/g wet)
Zr-95 20 - (0/16) - < LLD (0/4)
Clams Aq-110m 16 - (0/16) - < LLD (0/0)
(pCi/g wet)
Be-7 16 - (0/16) - < LLD (0/0)
Co-58 16 0.13 (0/16) - < LLD (0/0)
Co-60 16 0.13 (0/16) - < LLD (0/0)
Cr-51 16 - (0/16) - < LLD (0/0)
Cs-1 34 16 0.13 (0/16) - < LLD (0/0)
Cs-1 37 16 0.15 (0/16) - < LLD (0/0)
Fe-59 16 0.26 (0/16) - < LLD (0/0) 1-131 16 - (0/16) - < LLD (0/0)
K-40 16 - 1.95 (16/16) 29 0.4 mi 2.17 (4/4) (0/0)
(1.3-3.15) NNE (1.7-2.9)
Mn-54 16 0;13 (0/16) < LLD (0/0)
Nb-95 16 - (0/16) - < LLD (0/0)
Ru-1 03 16 - (0/16) - < LLD (0/0)
Ru-106 16 - (0/16) - < LLD (0/0)
Sb-1 25 16 - (0/16) - < LLD (0/0)
Th-228 16 - (0/16) - < LLD (0/0)
Zn-65 16 - (0/16) - <LLD (0/0) 3-16
Annual Radiological Environmental Operating Report Dominion Nuclear Connecticut, Inc.
2009 Millstone Station RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
DOCKETS 50-245, 50-336 & 50-339
_ I,...Indicator I . .,k u . , I Co Clams Zr-95 16 (0/16) < LLD (0/0)
(pCi/g wet)
Lobsters (Crabs) Ag-1i1m 12 (0/12) < LLD (0/0)
(pCi/g wet)
Be-7 12 - (0/12) < LLD (0/0)
Co-5 1 12 0.13 (0/12) < LLD (0/0)
Co-60 12 0.13 (0/12) < LLD (0/0)
Cr-51 12 - (0/12) < LLD (0/0)
Cs-1 34 12 0.13 (0/12) < LLD (0/0)
Cs-137 12 0.15 (0/12) < LLD (0/0)
Fe-59 12 0.26 (0/12) < LLD (0/0) 1-131 12 - (0/12) < LLD (0/0)
K-40 12 - 2.24 (12/12) 37-X 3.5 mi 2.4 (4/4) (0/0)
(1.7-2.73) WSW (2.05-2.73)
Mn-54 12 0.13 (0/12) < LLD (0/0)
Nb-95 12 " LLD
- (0/12) (0/0)
Ru-103 12 - (0/12) < LLD (0/0)
Ru-1 06 12 - (0/12) < LLD ~0/0)
Sb-125 12 - (0/12) < LLD (0/0)
Th-228 12 - (0/12) < LLD (0/0)
Zn-65 12 0.26 (0/12) < LLD (0/0) 3-17
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 NOTES FOR
SUMMARY
TABLE For gamma measurements the Minimum Detectable Level (MDL) - the Lower Limit of Detection (LLD) / 2.33. For all others, MDL = 2 x (the standard deviation of the background). These MDLs are based on the absence of large amounts of interfering activity (excluding naturally occurring radionuclides). Deviations by factors of 3 to 4 can occur.
The LLD at a confidence level of 95% is the smallest concentration of radioactive material in a sample that will be detected with a 5% probability of falsely concluding that a blank observation represents a "real" signal.
For a particular measurement system (which may include radiochemical separation):
LLD= 4.66 Sb, E
- V
- 2.22
- Y
- exp (-2At) where, LLD is the lower limit of detection as defined above (as pCi per unit mass or volume)
Sb is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (as counts per minute)
E is the counting efficiency (as counts per transformation)
V is the sample size (in units of mass or volume) 2.22 is the number of transformation per minute per picoCurie Y is the fractional radiochemical yield (when applicable)
A is the radioactive decay constant for the particular radionuclide Xt is the elapsed time between sample collection (or end of the sample collection period) and time of counting The LLD is defined as "a priori" (before the fact) limit representing the capability of a measurement system and not an "a posteriori" (after the fact) limit for a particular measurement.
Analyses shall be performed in such a manner that the stated LLDs will be achieved under routine conditions. Occasionally background fluctuations, unavoidably small sample sizes, the presence of interfering nuclides, or other uncontrollable circumstances may render these a priori LLDs unachievable. In such cases, the contributing factors will be identified and described in this report (see Notes for Section 3 or Section 4). As shown in the equation above, for composite samples taken over a period of time, the' LLD is decayed to the end of the sample period.
The listed 1-131 LLD for all the vegetation samples is for leafy vegetables.
The 1-131, Ba-140 and La-140 LLDs for the water samples are from end of sample period.
3-18
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 3.2 Data Tables The data reported in this section are strictly counting statistics. The reported error is two times the standard deviation (2a) of the net activity. Unless otherwise noted, the overall error (counting, sample size, chemistry, errors, etc.) is estimated to be 2 to 5 times that listed. Results are considered positive when the measured value exceeds 1.5 times the listed 2(a error (i.e., the measured value exceeds 3a). Any errors listed as zero are the artifact that there were no background counts in the area of the peak for these nuclides.
Because of counting statistics, negative values, zeros and numbers below the Minimum Detectable Level (MDL) are statistically valid pieces of data. For the purposes of this report, in order to indicate any background biases, all the valid data are presented. This practice was recommended by Health and Safety Laboratory (HASL) ("Reporting of Analytical Results from HASL," letter by Leo B. Higginbotham), NUREG 0475 and NUREG/CR-4007 (Sept. 984). In instances where zeros are listed after significant digits, this is an artifact of the co puter data-handling program.
Data are given according to sample type as indicated below.
- 1. Gamma Exposure Rate
- 2. Air Particulates, Gross Beta Radioactivity
- 3. Air Particulates, Weekly 1-131
- 4. Air Particulates, Quantitative Gamma Spectra
- 5. Air Particulates, Quarterly Strontium*
- 6. Soil
- 7. Milk - Dairy Farms*
- 8. Milk - Goat Farms
- 9. Pasture Grass
- 10. Well Water
- 11. Reservoir Water*
- 12. Fruits & Vegetables
- 13. Broad Leaf Vegetation
- 14. Seawater
- 15. Bottom Sediment
- 16. Aquatic Flora
- 17. Fin Fish
- 18. Mussels
- 19. Oysters
- 20. Clams
- 21. Scallops*
- 22. Lobster (and Crabs)
This type of sampling or analysis was not performed; therefore there is no table for these.
3-19
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 1, Quarterly TLD Gamma Exposure Rate (uRlhr)
Location First Second Third Fourth Average Number Quarter Quarter Quarter Quarter +/-2 s.d.
01 7.77 +/- 0.40 8.65 +/- 0.30 8.52 +/- 0.46 8.42 +/- 0.25 8.34 +/- 0.68 02 9.18 +/- 0.37 9.56 +/- 0.44 10.55 +/- 0.89 10.14 +/-0.31 9.86 +/- 1.05 03 6.64 +/- 0.30 7.72 +/- 0.23 8.04 +/- 0.33 7.92 +/- 0.23 7.58 +/- 1.11 04 7.35 +/- 0.31 7.88 +/- 0.22 7.93 +/- 0.31 8.13 +/- 0.41 7.82 +/- 0.58 05 8.21 +/- 0.33 9.61 +/-0.45 10.05 +/- 0.38 9.29 +/- 0.29 9.29 +/- 1.36 06 7.88 +/- 0.42 8.37 +/-0.24 8.37 +/- 0.35 8.62 +/- 0.22 8.31 +/- 0.54 07 5.19 +/- 0.18 5.02 +/-0.32 4.52 +/- 0.25 4.57 +/- 0.12 4.83 +/- 0.57 08 10.01 +/- 0.28 11.61 +/-0.39 11.60 +/- 0.62 11.24 +/-0.36 11.12 +/-1.31 09 8.45 +/- 0.33 9.70 +/-0.44 9.44 +/- 0.45 9.25 +/- 0.23 9.21 +/-0.93 10 9.49 +/- 0.29 10.43 +/- 0.35 10.74 +/- 0.41 10.48 +/- 0.47 10.29 +/-0.95 11 6.28 +/- 0.22 7.25 +/- 0.22 7.02 +/- 0.43 6.90 +/- 0.28 6.86 +/-0.72 12-C 7.10 +/- 0.28 7.43 +/- 0.25 7.70 +/- 0.30 7.91 +/- 0.21 7.54 +/-0.61 13-C 9.13 +/- 0.50 10.66 +/- 0.68 10.17 +/- 0.49 10.59 +/- 0.40 10.14 +/-1.22 14-C 8.86 0.36 9.89 0.29 9.68 0.48 9.58 +/- 0.29 9.50 +/-0.77 15-C 7.27 0.56 7.87 0.22 7.84 0.35 8.10 +/- ý0.24 7.77 +/-0.61 16-C 5.76 0.32 6.39 0.32 6.44 0.37 6.31 +/- 0.20 6.23 +/-0.54 27 7.53 0.38 8.17 0..29 8.38 0.34 8.36 +/- 0.35 8.11 +/-0.69 41 6.42 0.26 7.29 0.41 6.95 0.27 6.88 0.26 6.89 +/-0.62 42 7.01 0.32 8.12 0.29 8.12 0.40 8.13 0.29 7.85 +/-0.96 43 6.43 0.32 7.11 0.21 6.93 0.40 6.89 0.21 6.84 +/-0.50 44 7.54 0.27 8.26 0.29 8.18 0.43 7.95 0.20 7.98 +/-0.56 45 6.53 0.22 7.45 0.22 7.13 0.34 7.13 0.22 7.06 +/-0.67 46 7.59 0.23 8.28 0.30 7.68 0.51 8.35 0.23 7.98 +/-0.68 47 7.27 0.25 8.18 0.29 7.70 0.46 7.85 0.51 7.75 +/-0.65 48 8.94 0.72 9.71 0.35 9.42 0.42 9.47 0.27 9.39 +/-0.56 49 6.45 0.19 7.19 0.27 7.16 0.39 7.09 0.28 6.97 +/-0.61 50 7.42 0.22 8.03 0.36 7.89 0.38 7.85 0.26 7.80 +/-0.46 51 5.87 0.45 6.63 0.20 6.16 0.24 6.50 0.17 6.29 +/-0.59 52 6.82 0.23 7.57 0.26 ,6.97 0.34 7.41 0.37 7.19 +/-0.61 53 6.81 0.21 7.70 0.36 7.49 0.38 7.32 0.32 7.33 +/-0.66 55 7.28 0.56 7.77 0.32 7.33 0.58 7.45 0.45 7.46 +/-0.38 56 6.44 0.52 7.18 0.22 6.48 0.34 6.79 0.24 6.72 +/-0.59 57 6.67 0.32 7.58 0.25 7.06 0.31 7.41 0.24 7.18 +/- 0.70 59 7.03 0.26 8.15 0.38 8.14 0.42 8.05 0.21 7.84 +/- 0.94 60 6.19 0.23 6.74 0.35 6.65 0.28 6.72 0.18 6.58 +/- 0.45 61 6.69 0.44 7.21 0.22 7.25 0.45 7.31 0.28 7.12 +/- 0.50 62 7.84 0.47 8.21 0.32 7.95 0.35 8.43 0.30 8.11 +/- 0.46 63 8.52 0.30 8.57 0.44 8.80 0.48 8.75 0.45 8.66 +/- 0.24 64 7.02 0.25 8.00 0.80 7.01 0.32 7.38 0.32 7.35 +/- 0.80 65 7.41 0.23 8.03 0.31 7.87 0.34 8.25 0.26 7.89 +/- 0.62 66-X 6.53 0.31 6.98 0.30 6.83 0.32 7.17 0.26 6.88 +/- 0.47 73-X 8.91 0.36 9.17 0.33 8.99 0.35 9.16 0.24 9.06 +/- 0.22
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 1, Quarterly TLD Gamma Exposure Rate (uR/hr)
Location First Second Third Fourth Average Number Quarter Quarter Quarter Quarter +/- 2 s.d.
74-X 7.22 +/- 0.25 7.61 +/- 0.22 7.15 +/- 0.28 7.60 +/- 0.31 7.40 +/- 0.42 75-X 6.22 +/- 0.39 6.73 +/- 0.21 6.71 +/- 0.28 7.08 +/- 0.18 6.69 +/- 0.61
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 2, Air Particulate Gross Beta Radioactivity (I E-3 pCi/M 3)
Collection Date Locations JANUARY 01 02 03 04 10 11 12/29 01/04 25.70 +/- 4.50 # 22.70 +/- 3.90 28.50 +/- 4.60 27.50 +/- 4.30 27.20 +/- 4.10 25.80 +/- 4.50 01/05 01/11 21.70 +/- 4.40 22.60 +/- 3.90 24.40 +/- 4.40 21.10 +/- 4.10 21.30 +/- 3.80 20.00 +/- 4.30 01/12 01/18 28.00 +/- 4.60 27.40 +/- 4.10 27.80 +/- 4.50 28.50 +/- 4.40 27.70 +/- 4.10 29.70 +/- 4.60 01/19 01/25 37.40 +/- 4.30 34.10 +/- 4.30 41.50 +/- 5.00 38.70 +/- 4.70 36.90 +/- 4.30 37.00 +/- 4.30 FEBRUARY 01 02 0j 04 10 11 01/26 02/0 1 35.10 +/- 6.00 30.70 +/- 5.90 6.70 27.70 +/- 6.00 28.90 +/- 5.80 35.40 +/- 6.00 02/02 02/08 36.10 +/- 6.30 27.60 +/- 5.90 33.20 6.70 31.00 +/- 6.40 33.10 +/- 6.30 38.20 +/- 6.40 02/09 02/15 13.30 +/- 3.40 17.50 +/- 3.60 15.40 3.90 15.20 +/- 3.80 17.50 +/- 3.60 18.80 +/- 3.70 02/16 02/22 18.40 +/- 3.90 17.30 +/- 3.80 19.60 +/- 4.30 18.30 +/- 4.00 19.00 +/- 3.80 20.20 +/- 3.90 MARCH 01 02 03 04 10 11 02/23 03/01 18.40 +/- 5.60 25.50 +/- 5.80 17.50 +/- 6.00 2.0+/- 6.20 24.50 +/- 5.80 19.90 +/- 5.60 03/02 03/08 23.30 +/- 4.10 23.80 +/- 4.00 24.50 +/- 4.40 30.10 +/- 4.60 30.10 +/- 4.30 21.80 +/- 4.00 03/09 03/15 36.00 +/- 4.70 28.90 +/- 4.30 34.30 +/- 5.00 39.00 +/- 4.90 32.10 +/- 4.40 36.10 +/- 4.70 03/16 03/22 30.90 +/-4.40 26.00 +/- 4.10 30.10 +/- 4.70 29.80 +/- 4.50 31.20 +/- 4.20 29.20 +/- 4.30 03/23 03/29 14.30 +/-4.00 13.20 +/- 3.80 11.60 +/- 4.10 11.90 +/- 4.00 13.50 +/- 3.70 14.20 +/- 3.90 Qtr Avg +/- 2 sd 26.05 +/-16.48 24.41 +/- 11.19 26.42 +/-16.68 26.52 +/-15.62 26.38 +/-13.16 26.64 +/- 15.63 JANUARY 15-C 27 12/29 01/04 24.10 +/- 4.10 26.50 +/- 4.30 01/05 01/11 22.40 +/- 4.10 20.50 +/- 4.00 01/12 01/18 28.90 +/- 4.40 23.60 +/- 4.10 01/19 01/25 36.30 +/- 4.60 38.10 +/- 4.60 FEBRUARY 15-C 27 01/26 02/01 36.50 +/- 6.60 27.40 +/- 6.00 02/02 02/08 28.00 +/- 6.30 34.50 +/- 6.50 02/09 02/15 19.00 +/- 3.90 18.80 +/- 3.90 02/16 02/22 19.70 +/- 4.10 22.50 +/- 4.20 MARCH 1 5-C 27 02/23 - 03/0 1 24.00 +/- 6.20 18.80 +/- 5.80 03/02 - 03/08 28.30 +/- 4.50 24.90 +/- 4.30 03/09 - 03/15 37.10 +/- 5.00 30.20 +/- 4.50 03/16 - 03/22 27.20 +/- 4.40 26.80 +/- 4.30 03/23 - 03/29 11.70 +/- 4.00 13.90 +/- 3.90 Qtr Avg +/- 2 sd 26.40 +/- 14.36 251+/-1.7 25.12 +/- 12.75
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 2, Air Particulate Gross Beta Radioactivity (I E-3 pCi/rn3)
Collection Date Locations APRIL 01 02 03 04 10 11 03/30 04/05 9.60 +/-3.80 8.40 +/-3.50 9.20 +/-4.00 10.20 +/- 3.90 8.60 +/-t 3.40 8.10 +/-3.60 04/06 04/12 21.40 +/-4.20 21.80 +/-3.90 20.00 +/-4.40 A 22.50 +/- 4.30 21.00 +/- 3.80 21.50 +/-4.10 04/13 04/19 28.70 +/-6.40 22.50 +/-5.80 26.70 +/-5.70 24.90 +/- 5.70 18.20 +/- 5.40 27.60 +/-6.30 04/20 04/26 19.40 +/-5.00 13.70 +/-4.50 21.60 +/-4.70 21.90 +/- 4.70 19.30 +/- 4.50 18.50 +/-t5.00 MAY 01 02 03 04 10 11 04/27 - 05/03 21.40 +/-5.90 19.20 +/-5.50 22.30 +/-5.60 23.10 +/- 5.60 28.20 +/- 5.90 24.70 +/-L6.10 05/04 -05/10 9.20 +/-3.50 7.70 +/-3.20 8.90 +/-3.30 11.20 +/- 3.30 10.00 +/-' 3.20 i3.20 +/- 3.70 05/11 - 05117 16.00 +/-4.80 17.10 +/-4.50 15.70 +/-4.40 17.00 +/- 4.40 13.70 +/- 4.30 20.10 +/- 4.80 05/18 - 05/24 17.90 +/-4.20 17.50 +/-4.00 18.70 +/-4.00 19.50 +/- 3.90 18.90 +/- 3.90 20.00 +/- 43 05/25 - 05/3 1 10.50 +/-4.00 12.00 +/-3.80 12.20 +/-3.80 10.50 +/- 3.50 10.20 +/- 3.50 9.60 +/- 3[90 JUNE 01 02 03 04 10 11 06/0 1 06/07 23.20 +/- 5.00 23.00 +/- 4.70 20.60 +/- 4.40 22.60 +/- 4.50 22.10 +/- 4.40 22.00 +/- 4.90 06/08 06/14 12.50 +/- 3.40 13.00 +/- 3.60 15.00 +/- 3.70 14.00 +/- 3.50 13.70 +/- 3.50 10.10 +/- 3.70 06/15 06/21 6.20 +/-3.20 7.60 +/-3.50 7.10 +/-3.30 5.10 +/-3.10 5.50 +/-3.10 7.50 +/-3.60 06/22 06/28 14.60 +/-5.00 20.10 +/-5.80 14.70 +/-5.20 14.70 +/-4.90 14.60 +/-4.90 16.10 +/-5.00 Qtr Avg +/-2 sd 16.20 +/-12.57 15.66 +/-10.83 16.36 +/-11.39 16.71 +/-12.01 15.69 +/-12.17 16.85 +/-12.70 APRIL 15-C 27 03/30 - 04/05 8.70 +/-3.90 11.80 +/- 3.80 04/06 - 04/12 19.10 +/-4.30 21.90 +/- 4.20 04/13 - 04/19 23.30 +/-5.60 28.10 +/- 6.20 04/20 - 04/26 21.30 +/-4.70 20.80 +/- 4.90 MAY 15-C 27 04/27 - 05/03 23.40 +/- 5.60 20.80 +/-5.80 05/04 - 05/10 13.80 +/- 3.40 9.50 +/-3.50 05/11 - 05/17 20.90 +/- 4.50 14.70 +/-4.60 05/18 - 05/24 20.*80 +/- 4.10 16.70 +/-4.00 05/25 - 05/31 9.70 +/- 3.50 11.90 +/-3.80 JUNE 15-c 27 06/01 - 06/07 22.40 +/- 4.50 B 21.30 +/- 4.80 06/08 - 06/14 12.30 +/- 3.40 12.20 +/- 3.20 06/15 - 06/21 6.80 +/-3.30 7.50 +/-3.00 06/22 - 06/28 15.60 +/-5.10 14.30 +/-4.80 Qtr Avg +/-2 sd 16.78 +/- 11.40 16.27 +/-11.41
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 2, Air Particulate Gross Beta Radioactivity (I E-3 pCiIm 3 )
Collection Date Locations JULY 01 02 03 04 10 11 06/29 - 07/05 20.50 +/- 3.90 15.00 +/- 4.10 23.00 +/- 7.60 C 15.80 +/- 3.70 18.50 +/- 3.90 18.80 +/- 3.70 07/06 - 07/12 15.30 +/- 5.10 14.70 +/- 5.70 10.50 +/- 4.70 15.60 +/- 5.20 17.10 +/- 5.40 11.70 +/- 4.80 07/13 - 07/19 17.10 +/- 5.30 18.60 +/- 5.30 17.60 +/- 5.30 17.50 +/- 5.30 20.90 +/- 5.60 20.40 +/- 5.40 07/20 - 07/26 15.50 +/- 5.00 12.70 +/- 4.60 17.60 +/- 5.10 18.60 +/- 5.20 20.80 +/- 5.40 14.90 +/- 4.90 AUGUST 01 02 03 04 10 11 07/27 08/02 25.50 +/- 4.70 20.30 +/- 4.30 20.80 +/- 4.50 23.40 +/- 4.70 25.50 +/- 4.80 23.80 + 4.30 08/03 08/09 24.30 +/- 4.70 25.70 +/- 4.50 24.90 +/- 4.70 24.90 +/- 4.80 24.90 +/- 4.80 23.80 + 4.40 08/10 08/16 28.20 +/- 4.90 29.50 +/- 4.60 25.10 +/- 4.70 24.90 +/- 4.80 35.00 +/- 5.10 27.40 +/- 4.50 08/17 08/23 22.20 +/- 4.00 23.10 +/- 3.70 22.70 +/- 4.00 24.00 +/- 4.20 26.50 +/- 4.20 24.50 +/- 3.90 08/24 08/30 16.20 +/- 3.80 14.60 +/- 3.50 13.50 +/- 3.60 17.70 +/- 3.90 14.40 +/- 3.60 16.70 +/- 3.60 SEPTEMBER 01 02 03 04 10 11 08/31 09/06 19.80 +/- 5.40 23.10 +/- 5.20 22.90 +/- 5.50 19.20 +/- 5.30 23.50 +/- 5.40 22.30 + 5.20 09/07 09/13 19.20 +/- 5.70 12.50 +/- 4.80 20.60 +/- 5.70 18.50 +/- 5.70 18.20 +/- 5.30 16.40 +/- 5.10 09/14 09/20 19.10 +/- 5.50 19.10 +/- 5.00 14.10 +/- 5.00 15.10 +/- 5.20 17.90 +/- 5.10 .17.20 + 5.00 09/21 09/27 16.20 +/- 5.70 13.80 +/- 5.30 14.70 +/- 5.50 19.40 +/- 5.80 12.30 +/- 5.20 16.60 +/- 5.50 Qtr Avg +/- 2 sd 19.93 +/- 7.89 18.67 +/- 10.41 19.08 +/- 9.14 19.58 +/- 6.82 21.19 +/- 11.44 19.58 +/- 8.71 JULY 15-C 27 06/29 07/05 17.10 +/- 3.80 20.20 +/- 3.80 07/06 07/12 12.60 +/- 5.00 13.20 +/- 4.80 07/13 07/19 19.80 +/- 5.50 17.90 +/- 5.10 07/20 07/26 16.80 +/- 5.20 14.50 +/- 4.70 AUGUST 15-C 27 07/27 08/02 28.60 +/- 5.00 20.90 +/- 4.30 08/03 08/09 22.60 +/- 4.80 23.70 +/- 4.50 08/10 08/16 27.40 +/- 5.00 27.40 +/- 4.50 08/17 08/23 24.80 +/- 4.30 28.00 +/- 4.10 08/24 08/30 14.70 +/- 3.80 14.00 +/- 3.50 SEPTEMBER 15-C 27 08/31 09/06 22.20 +/- 5.70 25.30 +/- 5.40 09/07 09/13 18.20 +/- 5.70 16.50 +/- 5.10 09/14 09/20 16.90 +/- 5.10 21.30 +/- 5.20 09/21 09/27 15.30 +/- 5.70 20.50 +/- 5.50 Qtr Avg + 2 sd 19.77 +/- 9.59 20.26 +/- 9.47
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 2, Air Particulate Gross Beta Radioactivity (IE-3 pCi/m 3)
Collection Date Locations OCTOBER 01 02 03 04 10 11 09/28 10/04 12.20 + 5.20 10.00 +/- 4.90 10.80 +/- 5.10 11.60 +/- 5.20 8.70 +/- 4.70 14.90 +/- 5.30 10/05 10/1-1 15.20 + 5.40 14.90 +/- 5.30 12.50 +/- 5.30 17.20 +/- 5.60 14.80 +/- 5.50 20.40 +/- 5.80 10/12 10/18 19.00 + 5.40 21.40 +/- 5.40 11.10 +/- 5.00 14.30 +/- 5.20 17.30 +/- 5.20 17.40 +/- 5.30 10/19 10/25 27.00 + 5.60 31.40 +/- 6.00 27.20 +/- 5.70 27.10 +/- 5.70 31.60 +/- 5.90 29.10 +/- 5.70 NOVEMBER 01 02 03 04 10 11 10/26 - 11/01 18.10 +/- 5.10 14.30 +/- 4.80 12.80 +/- 4.80 20.10 +/- 5.30 17.50 +/- 5.10 17.50 +/- 5.10 11/02 - 11/08 22.70 +/- 5.70 23.30 +/- 5.70 18.60 +/- 5.50 25.50 +/- 5.90 25.60 +/- 5.90 24.10 +/- 5.80 11/09 - 11/15 19.80 +/- 4.00 18.90 +/- 5.50 20.50 +/- 5.70 18.60 +/- 5.50 23.80 +/- 5.90 20.60 +/- 5.50 11/16 - 11/22 26.40 +/- 5.90 19.00 +/- 5.50 16.90 +/- 5.40 22.20 +/- 5.70 17.80 +/- 5.40 21.70 +/- 5.60 11/23 - 11/29 20.70 +/- 3.90 17.70 +/- 3.80 17.00 +/- 4.10 D 20.20 +/- 3.90 16.90 +/- 3.80 21.30 +/- 3.90 DECEMBER 01 02 03 04 10 11 11/30 - 12/06 20.10 +/- 3.90 17.00 +/- 3.80 17.70 +/- 3.80 17.00 +/- 3.70 20.40 +/- 4.10 18.80 + 3.80 12/07 - 12/13 21.80 +/- 4.50 20.60 +/- 4.50 19.80 +/- 4.50 25.30 +/- 4.60 19.30 +/- 4.50 22.30 +/- 4.50 12/14 - 12/20 25.30 +/- 6.10 24.50 +/- 5.90 24.10 +/- 6.00 29.00 + 6.20 23.90 +/- 5.70 23.60 +/- 5.80 12/21 - 12/27 9.60 +/- 5.40 14.90 +/- 5.70 10.30 +/- 5.40 16.40 +/- 5.80 14.50 + 5.40 14.70 +/- 5.50 Qtr Avg +/- 2 sd 19.84 +/- 10.01 19.07 +/- 10.42 16.87 +/- 10.13 20.35 +/- 10.04 19.39 +/- 11.15 20.49 +/- 7.61 Ann Avg +/- 2 sd 20.50 +/- 14.07 19.45 +/- 12.43 19.68 +/- 14.60 20.79 +/- 13.60 20.67 +/- 14.27 20.89 +/- 13.65 OCTOBER 15-C 27 09/28 - 10/04 10.90 +/- 5.30 12.60 +/- 5.20 E 10/05 - 10/11 17.30 +/- 4.70 14.20 +/- 5.10 10/12 - 10/18 13.80 +/- 4.50 16.60 +/- 5.10 10/19 - 10/25 26.20 +/- 5.30 27.60 +/- 5.50 NOVEMBER' 15-C 27 10/26 - 11/01 15.00 +/- 4.60 20.70 +/- 5.10 11/02 - 11/08 28.40 +/- 5.70 23.30 +/- 5.50 11/09 - 11/15 19.90 +/- 5.40 16.20 +/- 5.10 11/16 - 11/22 25.00 +/- 5.60 19.60 +/- 5.30 11/23 - 11/29 18.00 +/- 3.60 17.00 +/- 3.50 DECEMBER 15-C 27 11/30 12/06 21.70 +/- 3.80 18.70 +/- 3.60 12/07 .12/13 20.60 +/- 4.30 21.00 +/- 4.10 12/14 12/20 24.00 +/- 5.80 24.60 +/- 5.60 12/21 12/27 14.10 +/- 5.30 15.10 +/- 5.30 Qtr Avg +/- 2 sd 19.61 +/- 10.28 19.02 +/- 8.37 Ann Avg +/- 2 sd 20.64 +/- 13.54 20.17 +/- 12.42
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 3, Airborne Iodine 1-131 (1E-3 pCi/m3)
Collection Date Locations JANUARY 01 02 03 04 10 11 12/29 01/04 12 +/- 19 -1 +/- 17 -9 +/- 18 13 +/- 18 -4 +/- 19 3 22 01/05 01/11 -5 +/- 12 10 +/- 11 -11 +/- 17 -6 +/- 14 4 +/- 12 0 +/-13 01/12 01/18 6 19 12 +/- 16 8 +/-15 -18 +/- 19 7 +/- 18 -17 +/- 17 01/19 01/25 -14 +/- 21 -16 +/- 21 -6 _19 6 20 6 +/- 18 6 17 FEBRUARY 01 03 04 10 11 01/26 02/01 -5 +/- 10 -3 +/-13 -8 +/- 14 -12 + 12 9 11 -7 +/- 10 13 I+/- 12 02/02 02/08 -3 +/- 10 5 10 0 11 -9 +/- 13 -8 +/- 12 02/09 02/15 1 18 -9 +/- 16 -1 +/- 19 14 +/- 23 12 +/- 19 -9 +/- 17 02/16 02/22 9 11 11 +/- 9 -7 +/- 14 3 14 -10 +/- 12 *1 +/-13 MARCH 01 02 03 04 10 11 02/23 03/01 7 12 6 +/-11 -8 +/- 16 14 +/- 10 -4 +/- 10 8 +/-15 03/02 03/08 -3 +/- 15 3 16 0+/- 18 20 +/- 18 -9 +/- 14 1 17 03/09 03/15 -14 +/- 12 -3 +/-9 2+/- 12 4 +/- 12 -4 11 -14 +/- 13 03/16 03/22 11 +/- 12 1 +/-12 -3 +/- 13 0 11 7 +/-10 -1 _ 11 03/23 03/29 1 14 5 13 0+/- 12 5 15 3 +/-11 -3 +/- 14 JANUARY 15-C 27 12/29 01/04 -5 +/- 18 3 +/-18 01/05 01/11 -2 +/- 12 -1 +/- 11 01/12 01/18 -25 +/- 19 3 +/-17 01/19 01/25 2+/- 27 -2 + 20 FEBRUARY 15-C 27 01/26 - 02/01 -12 +/- 12 2 11 02/02 - 02/08 17 +/- 12 -7 +/- 14 02/09 - 02/15 -11 +/- 22 4 +/-20 02/16 - 02/22 1 +/- 12 7+/- 13 MARCH 15-C 27 02/23 - 03/01 -6 +/- 15 -4 11 03/02 - 03/08 -4 +/- 19 -14 + 19 03/09 - 03/15 2 20 -7 +/- 13 03/16 - 03/22 -9 +/- 13 -5 +/- 13 03/23 - 03/29 -1 +/- 12 -6 +/- 12
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 3, Airborne Iodine 1-131 (1E-3 pCi/m 3)
Collection Date Locations APRIL 01 02 03 04 10 11 03/30 - 04/05 -4 19 0 15 2+/- 20 -8 +/- 16 -4 +/- 19 5 +/-15 04/06 - 04/12 16 +/- 17 -8 +/- 18 -10 +/- 21 A -4 +/- 19 -4 +/- 15 8 +/-17 04/13 - 04/19 -7 + 17 11 +/- 13 -2 +/- 15 6 +/- 12 11 +/- 12 -10 +/- 14 04/20 - 04/26 2 13 18 +/- 17 2+/-9 -4 +/-11 13 +/- 14 4 +/-14 MAY 01 02 03 04 10 11 04/27 05/03 -17 +/- 20 7 +/-17 -19 +/- 17 9 +/- 16 9 +/- 18
-7! 17 -3 +/- 18 05/04 05/10 -21 +/- 19 -4 15 2 15 0 +/- 18 -11 +/- 23 05/11 05/17 4 +/- 15 1 10 9 +/-14 -7 +/- 10 0 15 -2 +/-18 05/18 05/24 5 +/- 14 -8 +/- 12 -3 +/- 13 1 +/- 16 -9 17 2 +/-15 05/25 05/31 -7 +/- 15 19 +/- 15 12 +/- 16 -1 +/- 14 0 +/- 14 10 +/- 16 JUNE 01 02 03 04 10 11 06/01 06/07 -8 + 14 4 +/-11 -2 13 -4 +/- 12 6 +/- 16 2 +/-12 06/08 06/14 0+/-9 -4 +/-10 7+/- 13 -4 +/- 13 5 +/- 10 -1 +/- 12 06/15 06/21 -11 +/- 16 -5 +/- 16 -8 +/- 17 2 +/- 17 -2 +/- 17 5 +/-19 06/22 06/28 -15 +/- 15 7 +/-14 -2 +/- 14 2 +/- 15 -2 +/- 16 12 +/- 19 APRIL 15-C 27 03/30 04/05 -2 + 21 -10 +/- 22 04/06 04/12 13 + 18 2 +/-16 04/13 04/19 4 +/-19 6 +/-14 04/20 04/26 -7 +/- 13 5 +/-13 MAY 15-C 27 04/27 05/03 -14 +/- 19 -2 +/-18 05/04 05/10 6 +/-21 -13 +/- 24 05/11 05/17 8 21 5 +/-17 05/18 05/24 -18 +/- 16 6 14 05/25 05/31 12 +/- 14 0 +/-17 JUNE 15-C 27 06/01 06/07 -12 + 18 B 19 +/- 14 06/08 06/14 8 +/-11 -1 +/-9 06/15 06/21 8 +/-17 13 +/- 19 06/22 06/28 0 19 -6 +/-14
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 3, Airborne Iodine 1-131 (1E-3 pCi/m 3 )
Collection Date Locations JULY 01 02 03 04 10 11 06/29 - 07/05 -2 15 5 +/-19 -23 +/- 26 C 11 15 -8 +/- 14 7 +/- 14 07/06 - 07/12 -2 +/-12 7 17 13 +/- 19 8 18 0 +/- 17 2 +/- 17 07/13 - 07/19 -4 +/-20 6 +/-17 0 +/- 14 -4 16 5 +/- 15 2 +/- 14 07/20 - 07/26 -1 +/-12 -1 +/-15 1 +/- 13 0+/-14 -6 +/- 16 8 +/- 13 AUGUST 01 02 03 04 10 11 07/27 - 08/02 0 +/- 16 -1 +/- 14 10 +/-16 -7 +/- 18 0 +/- 15 0 +/- 16 08/03 - 08/09 5 +/- 12 5+/-9 3 +/-12 0 +/- 10 -5 +/- 12 -3 +/- 12 08/10 - 08/16 -12 19 9 +/- 16 0 +/-17 -7 +/- 15 -14 16 -7 +/- 17 08/17 - 08/23 4 +/-12 6 +/- 11 14 +/-11 -7 +/- 12 -1 11 4 +/- 15 08/24 - 08/30 8 +/-15 -2 +/- 18 -4 +/-17 0 +/- 16 17 +/-18 -6 +/- 19 SEPTEMBER 1 02 03 04 10 11 08/31 - 09/06 -9 +/- 13 -5 +/-9 -5+/- 10 7 +/- 12 0 +/- 13 -3+/- 11 09/07 - 09/13 6 +/- 17 -7 +/-12 2 +/-16 -4 +/- 18 -2 +/- 17 4 16 09/14 - 09/20 -13 +/- 17 13 18 0 +/-17 -11 +/-16 -17 +/-16 5 +/-16 09/21 - 09/27 -16 +/- 17 -16 17 26 +/-20 8 +/-17 -8 +/-20 14 +/-15 JULY 15-C 27 06/29 - 07/05 11 +/- 13 13 +/- 15 07/06 - 07/12 -7 +/-18 1 +/-16 07/13 - 07/19 4 +/-15 2 +/-14 07/20 - 07/26 3 +/- 13 3 +/-15 AUGUST 15-C 27 07/27 - 08/02 4 +/- 12 -6 1 16 08/03 - 08/09 -2 +/- 11 2 12 08/10 - 08/16 9 +/- 20 14 +/-14 08/17 - 08/23 0 +/- 14 10 +/-15 08/24 - 08/30 -5 +/- 16 2 +/-11 SEPTEMBER 15-C 27 08/31 - 09/06 -3 +/- 16 2 +/-10 09/07 - 09/13 7 +/- 13 -8 +/-15 09/14 - 09/20 -7 +/- 17 7 +/-21 09/21 - 09/27 0 +/- 17 12+/- 17
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 3, Airborne Iodine 1-131 (IE-3 pCilm 3 )
Collection Date Locations OCTOBER 01 02. 03 04 10 11 09/28 10/04 2 17 9 19 2 23 -7 +/- 21 13 +/- 20 0 22 10/05 10/11 -8 + 20 -10 +/- 17 -15 + 20 6 +/- 19 -20 +/- 21 9 22 10/12 10/18 -5 1 9 -9 +/- 12 -4 +/- 12 -11 +/- 15 2 14 3 +/-14 10/19 10/25 0 17 6 14 -1 11 2 14 -22 +/- 17 6 +/-17 NOVEMBER 01 02 03 04 10 11 10/26 11/01 -6 +/- 18 14 +/- 16 -2 +/- 22 -5 +/- 19 24 +/- 18 -7 +/- 15 11/02 11/08 -5 + 14 1 15 -6 +/- 16 -6 +/- 16 17 +/- 18 -5 +/- 17 11/09 11/15 -10 + 15 -2 +/- 21 0 17 -19 + 17 13 +/- 20 9+/- 16 11/16 11/22 -3 +/- 15 3 17 -2 +/- 23 2 _19 0 19 2+/- 19 11/23 11/29 -10 +/- 13 2 21 7+/- 20 D -18 19 12 +/- 20 4+/- 22 DECEMBER 01 02 03 04 10 11 11/30 12/06 -10 +/- 15 3 20 7 17 -3 +/- 20 20 +/- 21 -23 +/- 19 12/07 12/13 1 15 23 +/- 20 12 +/- 13 8 +/- 15 -5 +/- 21 -8 +/- 15 12/14 12/20 11 +/-16 3 17 -19 + 17 -6 +/- 19 3 17 3 +/-17 12/21 12/27 -9 +/- 16 -8 17 4 18 -9 +/- 17 10 + 15 -5 + 16 OCTOBER 15-C 27 09/28 - 10/04 5 22 2 23 E 10/05 - 10/11 -9 +/- 15 10 +/- 17 10/12 - 10/18 0 12 6 13 10/19 - 10/25 -1 + 13 -1 +/- 14 NOVEMBER 15-C 27 10/26 11/01 -2 + 20 -3 +/- 19 11/02 11/08 4 13 -1 +/- 17 11/09 11/15 4 14 -21 +/- 21 11/16 11/22 -10 + 22 11 +/- 17 11/23 11/29 -5 +/- 16 -3 +/- 19 DECEMBER 15-C 27 11/30 12/06 2 16 5 20 12/07 12/13 -6 17 -3 19 12/14 12/20 -10 + 19 -6 16 12/21 12/27 -11 + 17 15 +/- 14
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 4-A, Air Particulates Gamma Spectra - Quarter 1 (1 E-3 pCi/m 3 )
Location Isotope Ba-140 Be-7 Ce-1 41 Ce-I44 Co-58 Co-60 Cr-51 01 7.0 1 38.0 130.0 + 32.0 -0.3 +/- 3.5 1.9 +/- 2.9 -0.2+/- 1.3 0.0 +/-0.7 -8;0+/-28.0 02 33.0 +/- 38.0 96.0 +/- 31.0 -1.1 +/- 2.7 0.1 +/- 2.3 0.5 +/- 1.4 -0.2 +/-0.7 -11.0 +/- 25.0 03 -21.0 +/- 42.0 154.0 + 52.0 1.3 +/- 4.1 -0.8 +/- 3.0 -0.4+/- 1.6 0.4 +/-0.7 12.0 +/- 49.0 04 24.0 +/- 33.0 125.0 +/- 37.0 1.1 +/- 3.1 0.4 +/- 2.6 0.3 +/- 1.2 0.0+/-1.0 22.0 +/- 26.0 10 -11.0 +/- 22.0 130.0 + 36.0 0.6 +/- 2.7 -1.4 +/- 2.8 -0.7 +/- 0.8 -0.5 +/-0.9 -13.0 +/- 33.0 11 -21.0 +/- 32.0 128.0 + 30.0 -1.2 +/- 2.7 -1.1 +/-2.8 -0.2+/- 1.3 0.0 +/-0.6 3.0 +/- 31.0 15-C -26.0 +/- 37.0 97.0 + 34.0 0.2 +/- 3.3 -1.2 +/- 2.7 -1.1 +/-1.4 -0.6+/-0.7 -2.0 +/- 21.0 27 -12.0 +/- 52.0 119.0 + 34.0 1.0 +/- 3.4 -0.6 +/- 2.9 0.9 +/-1.6 0.2+/-1.0 7.0 +/-32.0 Cs-134 Cs-137 Mn-54 Nb-95 Ru-103 Ru-106 Zr-95 01 0.1 +/-0. -0.6 +/- 0.7 0.4 +/- 0.6 1.0 +/- 2.6 -0.7 +/- 2.4 -0.3 +/- 6.8 2.4 +/- 2.8 02 0.2 +/- 0.ý -0.1 +/- 0.7 0.0 +/- 0.7 0.6 +/- 2.2 0.6 +/- 2.2 -5.5 +/- 7.9 0.2 +/- 2.5 03 0.4 +/- 0.7 0.1 +/- 1.3 -0.2 +/- 0.9 -1.6 +/- 3.6 1.2 +/- 2.5 -8.0 +/- 12.0 -0.8+/- 1.6 04 0.3 +/- 0.4 0.3 +/- 0.7 0.3 +/- 0.4 2.9 +/- 2.9 1.7 +/- 2.5 -0.7+/-6.8 1.6 +/-2.6 10 -0.1 +/- 0.4 0.2 +/- 0.5 -0.2 +/- 0.9 3.2 +/- 2.9 -1.0 +/- 2.1 0.5 +/- 5.9 0.8 +/- 3.0 11 -0.1 +/- 0.5 -0.1 +/- 0.6 0.6 +/- 0.8 0.6 +/- 2.9 -1.0 +/- 2.5 -4.7+/-5.2 0.3 +/- 2.6 15-C -0.7 +/- 0.6 0.2 +/- 0.5 0.2 +/- 0.7 -0.9+/-2.0 0.3 +/- 2.1 -0.6 +/- 5.9 0.7 +/-2.5 27 -0.2 +/- 0.5 0.2 +/- 0.5 0.1 +/- 0.7 0.3 +/- 3.0 1.7 +/- 2.1 7.6 +/- 6.8 -0.1 +/-3.1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 4-B, Air Particulates Gamma Spectra - Quarter 2 (1E-3 pCi/m 3)
Location Isotope Ba-140 Be-7 Ce-141 Ce-l4 Co-58 Co-60 Cr-51 01 4.0 +/- 23.0 91.0 +/- 30.0 -1.2 +/- 2.5 3.3 +/- 3.3 0.4 +/- 1.4 -0.4 +/- 0.7 2.0 +/- 22.0 02 -12.0 + 17.0 102.0 + 34.0 -0.7 +/- 2.3 1.0 +/- 3.0 -0.2+/- 1.0 -0.6 +/- 0.9 9.0 +/- 18.0 03 4.0 + 13.0 75.0 +/- 25.0 0.5 +/- 2.2 -2.6 +/- 3.2 0.4 +/- 1.2 0.2 +/- 0.6 0.0 +/- 19.0 04 -1.0 17.0 136.0 +/- 37.0 -0.1 +/- 2.3 1.3 +/- 3.0 -0.6+/-1.7 -1.1 +/-1.1 -12.0 +/-18.0 10 -11.0 +/- 16.0 122.0 +/- 33.0 0.2 +/- 2.5 -0.7 +/- 3.0 0.0 +/- 0.8 -1.3+/- 1.6 -8.0 +/-25.0 11 0.0 16.0 119.0 +/- 33.0 0.7 +/- 2.3 -1.4 +/- 3.1 0.0+/-1.3 -0.4 +/-0.8 0.0 +/- 23.0 15-C 18.0 +/- 20.0 112.0+/- 38.0 -0.4 +/- 2.1 -4.7 +/- 3.2 0.3+/- 1.6 0.0 +/-0.8 -1.0 +/- 21.0 27 6.0 +/- 32.0 110.0 +/- 35.0 -0.2 +/- 2.3 2.9 +/- 3.3 0.5+/-1.8 -1.3+/- 1.7 -21.0 +/- 24.0 Cs-134 Cs-1 37 Mn-54 Nb-95 Ru103 Ru-1 06 Zr-95 01 -0.1 +/- 0.6 0.1 +/- 0.7 0.3 +/- 0.7 -2.0 +/- 2.0 -0.3 2.1 0.9 +/-3.9 2.4 +/- 2.8 02 0.2 +/- 0.5 -0.1 +/- 0.8 -0.2 +/- 0.6 -0.9 +/- 1.3 0.3 2.0 -1.0 +/-11.0 -0.4 +/- 2.3 03 0.1 +/- 0.6 -0.4 +/- 0.6 0.1 +/- 0.5 -0.1 +/- 2.3 0.3 +/-1.7 -4.4 +/-8.2 1.2 +/- 2.3 04 0.0 +/- 0.6 -0.1 +/- 0.9 -0.4 +/- 1.1 1.1 +/-2.0 0.0 +/-1.6 10.6 +/-9.8 0.7+/-2.3 10 0.5 +/- 0.6 0.1 +/- 0.9 -0.4 +/- 0.7 1.8 +/- 3.2 0.3 +/-1.9 8.1 +/-8.0 -0.8 +/- 2.4 11 0.0 +/- 0.7 0.0 +/- 0.8 -0.1 +/- 0.5 -1.3 +/- 2.8 -0.8+/- 1.8 -0.4+/-4.6 -0.4 +/- 2.7 15-C 0.3 +/- 0.5 0.4 +/- 0.7 0.0 +/- 0.9 -0.3+/-2.5 -0.6 +/-1.3 0.0 +/-11.0 1.7 +/- 2.4 27 0.2 +/- 0.7 -0.6 +/- 0.9 -0.2 +/- 0.8 2.3 +/- 2.9 -0.7 +/-1.4 -0.7+/-7.7 0.1 +/- 1.5
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 4-C, Air Particulates Gamma Spectra - Quarter 3 (1E-3 pCIrm 3)
Location Isotope Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 01 -12.0 +/- 43.0 101.0 +/- 43.0 0.8 +/- 3.1 4.5 +/- 4.1 -0.4 +/- 0.9 -0.1 +/- 1.3 -5.0 +/- 31.0 02 -15.0 +/- 21.0 124.0 +/- 40.0 -2.4 +/- 2.8 -1.0 +/- 3.8 1.0 +/- 1.4 0.0 +/- 0.7 -15.0 +/- 35.0 03 25.0 +/- 35.0 79.0 +/- 39.0 -0.6 +/- 3.4 -0.8 +/- 3.5 0.0 +/- 1.4 0.4 +/- 0.9 -1.0 +/- 28.0 04 25.0 +/- 35.0 90.0 +/- 39.0 -2.0 +/- 3.7 -0.9 +/- 3.0 -0.4 +/- 0.9 0.0 +/- 0.0 10.0 +/- 25.0 10 -8.0 +/- 26.0 87.0 +/- 37.0 3.9 +/- 3.3 2.7 +/- 4.5 -0.3 +/- 1.5 -0.5 +/- 0.7 11.0 +/- 29.0 11 -50.0 +/- 50.0 116.0 + 43.0 1.5 +/- 3.0 -1.2 +/- 4.0 -0.5 +/- 0.9 0.8 +/- 1.1 -1.0 +/- 25.0 15-C 13.0 +/- 44.0 82.0 +/- 41.0 -3.8 +/- 3.4 2.2 +/- 4.0 1.1 +/- 2.0 -1.0 +/- 1.9 37.0 +/- 38.0 27 7.0 + 25.0 149.0 +/- 41.0 -2.0 +/- 3.0 1.8 +/- 3.5 0.3 +/- 1.4 -0.3 +/- 0.9 11.0 +/- 26.0 Cs-134 Cs-137 Mn-54 Nb-95 Ru-103 Ru-1 06 Zr-95.
01 0.3 +/- 0.7 0.4 +/- 1.2 -0.2 +/- 1.2 -1.4 +/- 3.2 -0.6 +/- 2.5 4.0 +/- 11.0 0.2 +/- 3.3 02 0.2 +/- 0.7 0.1 +/- 1.0 -0.2 +/- 1.1 1.8 +/- 2.3 -0.2 +/- 2.0 -1.0 +/- 10.0 0.0 +/- 2.3 03 -0.4 +/- 0.6 0.2 +/- 0.9 0.0 +/- 1.2 1.8 +/- 2.5 0.0 +/- 1.6 -0.7 +/- 9.5 1.1 +/- 3.8 04 -0.4 +/- 0.7 0.2 +/- 0.9 -1.6 +/- 1.3 1.0 +/- 3.0 -0.6 +/- 2.5 -5.5 +/- 9.9 1.1 +/- 3.8 10 0.9 +/- 0.9 0.2 +/- 0.9 -0.4 +/- 1.4 0.0 +/- 4.3 -0.5 +/- 3.2 -2.5 +/- 8.8 1.2 +/- 3.4 11 0.2 +/- 0.5 -0.5 +/- 1.0 0.5 +/- 1.1 -0.5 +/- 3.4 0.0 +/- 2.5 -5.0 +/- 9.0 -2.0 +/- 3.3 15-C 0.1 +/- 0.9 0.2 +/- 0.5 -1.1 +/- 1.1 0.0 +/- 0.0 0.0 +/- 3.6 -1.0+/- 12.0 1.3 +/- 4.6 27 0.2 +/- 0.6 -1.4 +/- 0.8 0.0+/- 1.1 1.7 +/- 2.8 -0.3 +/- 2.6 -2.1 +/- 7.0 0.0 +/- 3.6
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 4-D, Air Particulates Gamma Spectra - Quarter 4 (1 E-3 pCilm 3 )
Location Isotope Ba-140 Be-7 Ce-1 41 Ce-l4 Co-58 Co-60 Cr-51 01 -0.3 9.0 72.0 +/- 29.0 0.3 +/- 2.3 0.6 +/- 3.0 0.0+/-1.0 0.4 +/- 0.9 -7.0 +/- 16.0 02 4.0 +/- 17.0 107.0 +/- 32.0 1.4 +/- 1.9 -1.2+/- 1.9 0.0 +/- 0.9 0.7 +/- 1.0 0.0 +/- 19.0 03 0.0 +/- 20.0 75.0 +/- 31.0 -0.2 +/- 2.6 -1.0 +/- 2.6 0.1 +/- 1.7 0.0+/- 1.0 -7.0 +/- 22.0 04 -7.0 + 13.0 103.0 +/- 28.0 0.6 +/- 2.6 -0.4 +/- 3.5 -0.7+/- 1.3 -0.2 +/- 0.8 7.0 +/- 20.0 10 9.0 + 14.0 90.0 +/- 25.0 -0.7 +/- 1.6 -0.7 +/- 2.3 0.7 +/- 1.1 0.4+/- 1.0 -6.0+/- 13.0 11 -9.0 +/- 10.0 82.0 +/- 27.0 -0.1 +/- 1.6 0.8 +/- 2.4 0.0 +/- 0.6 0.0 +/- 0.8 -8.0+/- 11.0 15-C 1.6 +/- 6.3 84.0 +/- 22.0 0.3 +/- 1.9 -1.6 +/- 2.6 0.0 +/- 0.9 0.0 +/- 0.9 12.0 +/- 15.0 27 5.6 +/- 7.9 88.0 +/- 24.0 0.0 +/- 1.6 -2.4 +/- 2.4 0.1 +/- 1.3 0.6 +/- 0.7 10.0 +/- 12.0 Cs-1 34 Cs-137 Mn-54 Nb-95 Ru-103 Ru-106 Zr-95.
01 0.1 +/- 0.6 0.5 +/- 0.8 0.2 +/- 0.9 -2.5 +/- 2.4 -0.4+/- 1.5 -5.3 +/- 5.9 -3.0 +/- 2.3 02 0.5 +/- 0.7 -0.4 +/- 0.6 0.2 +/- 1.0 -0.3 +/- 2.3 -0.7+/-1.4 1.1 +/-8.2 -2.7 +/- 2.4 03 0.1 +/- 0.7 -0.3 +/- 1.2 0.7 +/- 0.9 0.6 +/- 1.9 -0.7+/-1.1 -2.7 +/- 8.9 -1.1 +/- 1.6 04 -0.2 +/- 0.8 0.3 +/- 0.8 0.0 +/- 0.9 0.1 +/- 2.6 -1.4 +/- 2.0 2.2 +/- 8.5 -0.4+/-2.6 10 0.2 +/- 0.5 -0.2 +/- 0.6 0.1 +/- 0.7 -0.2+/- 1.4 -0.6+/- 1.3 3.8 +/- 6.1 -0.9+/- 1.8 11 -0.2 +/- 0.6 -0.2 +/- 0.7 0.1 +/- 0.9 1.4 +/- 1.9 -1.8 +/- 1.4 -2.5 +/- 3.5 1.6 +/- 2.1 15-C -0.4 +/- 0.5 0.1 +/- 0.6 -0.2+/-0.8 2.4 +/- 1.7 0.6 +/- 1.3 2.1 +/- 5.6 0.2+/- 1.6 27 -0.2 +/- 0.4 0.0 +/- 0.7 0.1 +/-0.6 0.1 +/- 1.4 -0.2+/-1.2 -4.2 +/- 7.8 0.5 +/- 2.0
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 6, Soil (pCi/g Dry)
Location Collection Isotope Date 03 Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 08/18/09 0.33 +/- 0.38 0.08 +/- 0.08 -0.04 +/- 0.23 0.00 +/- 0.04 -0.02 +/- 0.03 -0.58 +/- 0.44 Cs-1 34 Cs-137 Fe-59 K-40 Mn-54 Nb-95 08/18/09 0.03 +/- 0.05 0.46 +/- 0.09 -0.09 +/- 0.11 13.20 +/- 1.50 -0.02 +/- 0.04 0.04 +/- 0.06 Ru-1 03 Ru-1 06 Sb-125 Th-228 Zn-65 Zr-95 08/18/09 0.02 +/- 0.05 -0.05 +/- 0.35 -0.04 +/- 0.09 0.87 +/- 0.18 0.02 +/- 0.18 -0.05 +/- 0.07 04 Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 08/18/09 0.66 +/- 0.74 0.14 +/- 0.16 -0.47 +/- 0.41 0.03 +/- 0.09 0.06 +/- 0.07 0.18 +/- 0.93 Cs-134 Cs-137 Fe-59 K-40 Mn-54 Nb-95 08/18/09 0.02 +/- 0.06 0.73 +/- 0.19 0.01 +/- 0.23 11.80 +/- 2.90 0.02 +/- 0.09 -0.03 +/- 0.11 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 08/18/09 0.10 +/- 0.11 -0.43 +/- 0.86 -0.04 +/- 0.19 1.06 +/- 0.43 0.01 +0.42 0.00 +/- 0.17 14-C Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 08/18/09 0.72 +/- 0.87 -0.02 +/- 0.17 -0.29 +/- 0.51 -0.09 +/- 0.09 0.06 +/- 0.06 -0.20 +/- 1.10
. Cs-137 Cs-134 Fe-59 K-40 Mn-54 Nb-95 08/18/09 0.01 +/- 0.06 1.19 +/- 0.22 -0.10 +/- 0.21 11.20 +/- 2.40 -0.02 +/- 0.08 0.03 +/- 0.13 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 08/18/09 0.09 +/- 0.12 -0.14 +/- 0.76 -0.13 +/- 0.20 1.50 +/- 0.43 -0.25 +/- 0.22 0.14 +/- 0.14
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 8, Goat Milk (pCilL)
Location Collection Isotope Date 21 Ba-140 Cs-1 34 Cs-137 1-131 K-40 La-140 04/22/09 -0.60 1 6.30 0.80 + 2.60 3.40 +/- 4.30 -0.14 +/- 0.04 1430.00 +/- 140.00 -0.60 +/- 6.30 05/20/09 1.30 +/- 7.50 -0.30 + 3.30 -1.40 +/- 4.20 -0.06 +/- 0.15 1060.00 +/- 130.00 1.30 +/- 7.50 06110/09 4.30 +/- 6.70 -0.40 + 3.00 17.00 +/- 6.30 -0.08 +/- 0.04 1740.00 +/- 160.00 4.30 +/- 6.70 06/24/09 3.70 +/- 6.20 0.10 + 3.30 5.10 +/- 4.40 -0.25 +/- 0.08 1360.00 +/- 160.00 3.70 +/- 6.20 07/08/09 -0.90 +/- 6.70 -1.10 +/- 4.10 6.60 +/- 6.00 -0.15 +/- 0.05 1390.00 +/- 170.00 -0.90 +/- 6.70 07/22/09 2.80 +/- 6.30 -0.90 + 3.10 2.40 +/- 4.00 -0.24 +/- 0.08 1010.00 +/- 120.00 2.80 +/- 6.30 Sr-89 Sr-90 06/24/09 3.10 +/- 3.30 1.70 +/- 1.10 07/22/09 -4.80 +/- 5.80 1.60 +/- 1.20 24-C Ba-140 Cs-1 34 Cs-1 37 1-131 K-40 La-140 03/11/09. -2.90 +/- 7.30 -1.20 +/- 3.00 5.80 +/- 4.70 0.19 +/- 0.43 1450.00 +/- 150.00 -2.90 +/- 7.30 04/09/09 1.80 +/- 6.90 1.40 +/- 3.20 4.60 +/- 4.10 -0.13 +/- 0.26 1460.00 +/- 150.00 1.80 +/- 6.90 04/22/09 0.60 +/- 7.90 0.50 +/- 2.90 8.20 +/- 6.70 0.00 + 0.25 1540.00 +/- 170.00 0.60 +/- 7.90 05/06/09 -2.40 +/- 7.20 -0.40 +/- 3.30 2.30 +/- 4.50 -0.15 +/- 0.04 1580.00 :! 170.00 -2.40 +/- 7.20 05/20/09 -3.10 +/- 7.40 -3.70 +/- 3.00 8.10 +/- 5.90 0.06 + 0.37 1560.00 +/- 160.00 -3.10 +/- 7.40 06/10/09 3.80 +/- 8.40 0.90 +/- 3.00 5.00 +/- 4.60 0.02 +/- 0.31 1230.00 +/- 160.00 3.80 +/- 8.40 07/22/09 2.20 +/- 7.90 2.20 +/- 3.70 3.50 +/- 6.20 0.16 +/- 0.45 1790.00 +/- 200.00 2.20 +/- 7.90 Sr-89 Sr-90 03/11/09 2.80 +/- 3.90 2.20 +/- 1.20 06/10/09 6.40 +/- 4.60 3.50 +/- 1.30 07/22/09 -20.30 +/- 7.00 0.00 +/- 1.00
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 9, Pasture Grass (pCi/g Dry)
Location Collection Isotope Date 21 Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 01/14/09 0.002 + 0.045 F 0.080 +/- 0.220 -0.003 +/- 0.027 -0.030 +/- 0.100 -0.004 +/- 0.026 0.019 +/- 0.030 02/11109 0.035 0.057 F 0.000 +/- 0.170 0.004 +/- 0.029 -0.020 +/- 0.100 -0.018 +/- 0.028 -0.019 +/- 0.033 03/11/09 0.016 +/- 0.052 F 0.000 +/- 0.150 0.003 +/- 0.022 0.053 +/- 0.075 0.005 +/- 0.018 -0.003 +/- 0.026 04/09/09 0.014 +/- 0.079 F 0.060 +/- 0.260 -0.009 +/- 0.035 0.010 +/- 0.120 0.003 +/- 0.034 -0.017 +/- 0.038 05/06/09 0.017 :1 0.066 F -0.050 +/- 0.270 0.005 +/- 0.029 0.020 +/- 0.140 -0.025 +/- 0.031 0.010 +/- 0.031 08/05/09 -0.010 +/- 0.032 0.570 +/- 0.280 -0.020 +/- 0.027 -0.024 +/- 0.094 -0.006 +/- 0.023 0.003 +/- 0.022 08/19/09 0.070 +/- 0.110 0.530 +/- 0.410 -0.023 +/- 0.046 0.040 +/- 0.120 0.025 +/- 0.038 0.021 +/- 0.036 09/09/09 -0.050 +/- 0.230 5.680 +/- 0.540 0.022 +/- 0.061 -0.110 +/- 0.140 -0.002 +/- 0.035 0.001 +/- 0.028 09/23/09 0.030 +/- 0.160 3.320 +/- 0.640 -0.021 +/- 0.056 -0.060 +/- 0.150 -0.021 +/- 0.034 0.007 +/- 0.034 10/07/09 -0.045 +/- 0.084 F 0.090 +/- 0.250 0.009 +/- 0.039 -0.050 +/- 0.120 0.011 +/- 0.027 -0.017 +/- 0.027 10/21/09 -0.030 +/- 0.057 4.420 +/- 0.440 -0.013 +/- 0.028 -0.073 +/- 0.076 0.001 +/- 0.019 0.010 +/- 0.020 11/10/09 0.043 +/- 0.078 7.140 +/- 0.510 0.011 +/- 0.034 0.037 +/- 0.094 0.010 +/- 0.024 0.012 +/- 0.025 12/16/09 -0.052 +/- 0.076 F 0.030 +/- 0.230 0.005 +/- 0.077 0.030 +/- 0.220 0.000 +/- 0.028 0.006 +/- 0.026 Cr-51 Cs-1 34 Cs-1 37 Fe-59 1-131 K-40 01/14/09 -0.060 +/- 0.160 0.000 +/- 0.018 0.029 +/- 0.026 0.012 +/- 0.076 0.022 +/- 0.037 11.000 +/- 1.200 02/11/09 -0.160 +/- 0.170 -0.005 +/- 0.018 0.001 +/- 0.025 -0.011 +/- 0.067 0.026 +/- 0.052 12.400 +/- 1.300 03/11/09 0.170 +/- 0.190 0.004 +/- 0.014 -0.034 +/- 0.023 0.027 +/- 0.061 0.020 +/- 0.051 8.400 +/- 1.000 04/09/09 -0.100 +/- 0.230 -0.017 +/- 0.028 0.004 +/- 0.036 -0.011 +/- 0.078 -0.040 +/- 0.070 12:500 + 1.000 05/06/09 0.110 +/- 0.270 0.019 +/- 0.026 0.027 +/- 0.033 -0.011 +/- 0.069 0.019 +/- 0.084 15.600 +/- 0.950 08/05/09 0.000 +/- 0.170 0.001 +/- 0.017 0.019 +/- 0.023. -0.029 +/- 0.055 0.008 +/- 0.019 4.910 +/- 0.790 08/19/09 0.320 +/- 0.360 0.011 +/- 0.029 0.028 +/- 0.029 0.007 +/- 0.094 0.038 +/- 0.043 5.600 +/- 1.000 09/09/09 -0.020 +/- 0.450 -0.007 +/- 0.021 0.084 +/- 0.037 -0.021 +/- 0.081 0.001 +/- 0.019 6.310 + 0.650 09/23/09 0.000 +/- 0.420 0.008 +/- 0.026 0.002 +/- 0.035 -0.004 +/- 0.077 0.001 +/- 0.017 5.700 +/- 1.000 10/07/09 0.000 +/- 0.280 -0.006 +/- 0.022 0.032 +/- 0.027 0.008 +/- 0.065 -0.170 +/- 0.150 12.210 + 0.790 10/21/09 -0.100 +/- 0.230 0.009 +/- 0.016 -0.011 +/- 0.018 0.002 +/- 0.050 0.003 +/- 0.016 4.470 +/- 0.590 11/10/09 0.060 +/- 0.250 -0.007 +/- 0.016 -0.001 +/- 0.021 0.025 +/- 0.057 0.003 +/- 0.018 4.630 + 0.590 12/16/09 0.060 +/- 0.300 -0.016 +/- 0.025 -0.003 +/- 0.023 -0.053 +/- 0.064 -0.090 +/- 0.170 11.000 +/- 1.000 La-140 Mn-54 Nb-95 Ru-1 03 Ru-106 Sb-125 01/14/09 0.002 +/- 0.045 0.008 +/- 0.027 -0.008 +/- 0.024 -0.012 +/- 0.024 -0.140 +/- 0.220 -0.015 +/- 0.053 02/11/09 0.035 +/- 0.057 0.002 +/- 0.023 -0.001 +/- 0.029 0.000 +/- 0.025 0.040 +/- 0.210 0.015 +/- 0.062 03/11/09 0.016 +/- 0.052 0.016 +/- 0.019 -0.018 +/- 0.024 -0.017 +/- 0.017 -0.190 +/- 0.160 0.003 +/- 0.040 04/09/09 0.014 +/- 0.079 0.005 +/- 0.035 -0.004 +/- 0.036 0.017 +/- 0.030 -0.190 +/- 0.300 0.046 +/- 0.077 05/06/09 0.017 +/- 0.066 0.035 +/- 0.030 0.021 +/- 0.040 -0.008 +/- 0.034 0.060 +/- 0.290 0.040 +/- 0.078 08/05/09 -0.010 +/- 0.032 -0.015 +/- 0.022 -0.004 +/- 0.026 -0.010 +/- 0.022 -0.070 +/- 0.240 0.011 +/- 0.058 08/19/09 0.070 +/- 0.110 0.017 +/- 0.033 -0.027 +/- 0.048 -0.007 +/- 0.033 0.120 +/- 0.280 0.055 +/- 0.072 09/09/09 -0.050 +/- 0.230 -0.018 +/- 0.028 -0.006 +/- 0.058 0.015 +/- 0.058 -0.150 +/- 0.370 -0.013 +/- 0.073 09/23/09 0.030 +/- 0.160 -0.010 +/- 0.030 -0.027 +/- 0.049 -0.026 +/- 0.044 0.000 +/- 0.310 0.012 +/- 0.080 10/07/09 -0.045 +/- 0.084 -0.002 +/- 0.027 0.014 +/- 0.039 -0.046 +/- 0.041 -0.050 +/- 0.260 -0.004 +/- 0.069 10/21/09 -0.030 +/- 0.057 -0.007 +/- 0.019 0.010 +/- 0.025 -0.009 +/- 0.023 -0.050 +/- 0.160 0.008 +/- 0.052 11/10/09 0.043 +/- 0.078 0.014 +/- 0.023 0.017 +/- 0.032 -0.021 +/- 0.029 -0.060 +/- 0.200 0.029 +/- 0.061 12/16/09 -0.052 +/- 0.076 0.017 +/- 0.023 -0.039 +/- 0.037 -0.017 +/- 0.031 -0.020 +/- 0.200 -0.005 +/- 0.065 Th-228 Zn-65 Zr-95 01/14/09 0.050 +/- 0.110 -0.010 +/- 0.077 -0.023 +/- 0.040 02/11/09 -0.080 +/- 0.100 -0.037 +/- 0.076 -0.008 +/- 0.038 03/11/09 0.042 +/- 0.086 0.000 +/- 0.062 -0.011 +/- 0.035 04/09/09 0.050 +/- 0.190 0.019 +/- 0.086 0.000 +/- 0.055 05/06/09 0.010 +/- 0.160 0.040 +/- 0.100 0.012 +/- 0.056 08/05/09 -0.006 +/- 0.087 -0.014 +/- 0.056 0.007 +/- 0.041 08/19/09 -0.090 +/- 0.130 -0.075 +/- 0.081 -0.022 +/- 0.062 09/09/09 -0.050 +/- 0.150 0.140 +/- 0.110 -0.009 +/- 0.065 09/23/09 0.030 +/- 0.130 -0.012 +/- 0.076 -0.052 +/- 0.069
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 9, Pasture Grass (pCi/g Dry)
Location Collection Isotope Date 21 Th-228 Zn-65 Zr-95 10/07109 -0.020 +/- 0.130 -0.007 +/- 0.089 -0.017 +/- 0.051 10/21/09 -0.046 +/- 0.070 -0.061 +/- 0.051 0.042 +/- 0.037 11/10/09 0.002 +/- 0.099 0.001 +/- 0.072 -0.002 +/- 0.043 12/16/09 0.070 +/- 0.064 -0.024 +/- 0.061 -0.013 +/- 0.055 24-C Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 01/14/09 0.024 +/- 0.045 F 0.350 +/- 0.240 0.010 +/- 0.026 0.030 +/- 0.120 -0.006 +/- 0.023 -0.012 +/- 0.025 02/11/09 -0.066 +/- 0.089 F 0.310 +/- 0.390 -0.062 +/- 0.045 -0.050 +/- 0.130 -0.004 +/- 0.034 0.047 +/- 0.039 06/24/09 0.017 +/- 0.024 0.750 +/- 0.320 -0.015 +/- 0.029 -0.060 +/- 0.100 -0.019 +/- 0.025 0.000 +/- 0.026 07/08/09 0.000 +/- 0.042 1.240 +/- 0.390 -0.012 +/- 0.027 0.020 +/- 0.110 -0.014 +/- 0.023 -0.015 +/- 0.029 08/05/09 0.009 +/- 0.045 1.150 +/- .360 -0.034 +/- 0.032 -0.100 +/- 0.110 0.005 +/- 0.027 0.009 +/- 0.030 08/19/09 0.036 +/- 0.063 .1.290 +/- .350 0.004 +/- 0.037 0.026 +/- 0.094 -0.015 +/- 0.024 -0.005 +/- 0.028 09/09/09 0.000 +/- 0.096 1.140 +/- .390 -0.008 +/- 0.041 -0.070 +/- 0.110 -0.004 +/- 0.029 -0.011 +/- 0.024 09/23/09 0.020 +/- 0.120 1.420 +/- 0.490 -0.029 +/- 0.055 0.010 +/- 0.120 0.005 1- 0.035 -0.003 +/- 0.028 10/07/09 0.020 +/- 0.100 F 1.270 + 0.430 -0.008 +/- 0.063 -0.040 +/- 0.140 -0.022 +/- 0.034 0.025 +/- 0.033 10/21/09 -0.065 +/- 0.089 3.590 +/- 0.610 -0.024 +/- 0.040 0.020 +/- 0.110 -0.017 +/- 0.029 0.015 +/- 0.031 11/10/09 0.039 +/- 0.084 8.260 +/- 0.610 -0.038 +/- 0.033 -0.020 +/- 0.110 -0.001 +/- 0.026 -0.011 +/- 0.034 12/16/09 -0.060 +/- 0.170 F 1.420 + 0.340 0.005 +/- 0.043 -0.030 +/- 0.110 0.000 +/- 0.032 0.025 +/- 0.033 Cr-51 Cs-134 Cs-137 Fe-59 1-131 K-40 01/14/09 -0.100 +/- 0.190 0.009 +/- 0.025 0.050 +/- 0.027 0.046 +/- 0.055 -0.034 +/- 0.050 10.850 +/- 0.750 02/11/09 0.080 +/- 0.300 -0.001 +/- 0.030 0.015 +/- 0.038 0.027 +/- 0.080 -0.009 +/- 0.088 10.200 +/- 1.000 06/24/09 0.080 +/- 0.210 -0.002 +/- 0.016 0.017 +/- 0.024 -0.031 +/- 0.055 -0.017 +/- 0.005 4.240 +/- 0.860 07/08/09 -0.050 +/- 0.190 -0.004 +/- 0.016 -0.012 +/- 0.027 -0.002 +/- 0.036 -0.004 +/- 0.001 4.010 +/- 0.760 08/05/09 0.110 +/- 0.220 -0.021 +/- 0.021 0.017 +/- 0.027 -0.008 +/- 0.060 0.010 +/- 0.025 5.220 +/- 0.810 08/19/09 -0.070 +/- 0.260 0.014 +/- 0.020 0.000 +/- 0.022 -0.038 +/- 0.052 0.036 +/- 0.041 3.940 +/- 0.670 09/09/09 0.050 +/- 0.260 -0.017 +/- 0.023 0.001 +/- 0.030 0.036 +/- 0.072 0.014 +/- 0.029 6.020 +/- 0.890.
09/23/09 -0.190 +/- 0.380 0.013 +/- 0.025 0.001 +/- 0.029 0.053 +/- 0.073 -0.008 +/- 0.003 5.130 +/- 0.870 10/07/09 0.050 +/- 0.350 0.025 +/- 0.033 0.021 +/- 0.033 -0.015 +/- 0.080 0.020 +/- 0.150 8.180 +/- 0.790 10/21/09 0.020 +/- 0.310 0.006 +/- 0.018 -0.002 +/- 0.026 -0.036 +/- 0.066 -0.005 +/- 0.002 5.370 +/- 0.890 11/10/09 -0.050 +/- 0.210 0.008 +/- 0.019 -0.021 +/- 0.027 0.015 +/- 0.066 0.004 +/- 0.019 6.770 +/- 0.900 12/16/09 0.060 +/- 0.310 -0.008 +/- 0.022 0.011 +/- 0.031 -0.067 +/- 0.091 0.040 +/- 0.190 11.490 +/- 0.890 La-140 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 01/14/09 0.024 +/- 0.045 -0.023 +/- 0.025 -0.015 +/- 0.027 0.006 +/- 0.025 0.040 +/- 0.230 0.002 +/- 0.062 02/11/09 -0.066 +/- 0.089 -0.016 +/- 0.034 0.016 +/- 0.040 -0.002 +/- 0.034 0.010 +/- 0.320 -0.004 +/- 0.081 06/24/09 0.017 +/- 0.024 -0.005 +/- 0.023 0.009 +/- 0.026 0.000 +/- 0.025 -0.100 +/- 0.170 -0.030 +/- 0.062 07/08/09 0.000 i 0.042 -0.009 +/- 0.019 0.000 +/- 0.021 -0.014 +/- 0.025 0.090 +/- 0.220 -0.009 +/- 0.058 08/05/09 0.009 +/- 0.045 0.013 +/- 0.026 0.017 +/- 0.029 0.013 +/- 0.027 0.110 +/- 0.260 -0.052 +/- 0.059 08/19/09 0.036 +/- 0.063 0.017 +/- 0.021 0.003 +/- 0.033 0.004 +/- 0.029 0.030 +/- 0.170 0.032 +/- 0.053 09/09/09 0.000 +/- 0.096 0.004 +/- 0.025 -0.001 +/- 0.043 -0.009 +/- 0.032 -0.020 + 0.220 0.015 +/- 0.055 09/23/09 0.020 +/- 0.120 -0.006 +/- 0.033 -0.018 +/- 0.046 -0.015 +/- 0.045 0.050 +/- 0.240 -0.012 +/- 0.063 10/07/09 0.020 +/- 0.100 0.007 +/- 0.034 0.011 +/- 0.059 0.017 +/- 0.041 -0.120 +/- 0.290 -0.008 +/- 0.075 10/21/09 -0.065 +/- 0.089 -0.004 +/- 0.028 0.009 +/- 0.038 0.023 +/- 0.032 -0.080 +/- 0.220 0.020 +/- 0.072 11/10/09 0.039 +/- 0.084 0.002 +/- 0.027 0.019 +/- 0.034 -0.011 +/- 0.028 -0.120 +/- 0.260 -0.026 +/- 0.068 12/16/09 -0.060 +/- 0.170 0.001 +/- 0.029 0.000 +/- 0.041 0.024 +/- 0.035 -0.050 +/- 0.260 -0.036 +/- 0.064
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 9, Pasture Grass (pCilg Dry)
Location Collection Isotope Date 24-C Th-228 Zn-65 Zr-95 01/14/09 -0.030 +/- 0.110 0.060 +/- 0.100 0.035 +/- 0.044 02/11/09 -0.020 +/- 0.180 -0.016 +/- 0.088 0.067 +/- 0.063 06/24/09 -0.024 +/- 0.098 0.013 +/- 0.058 0.009 +/- 0.035 07/08/09 -0.030 +/- 0.120 -0.025 +/- 0.063 0.012 +/- 0.042 08/05/09 0.034 +/- 0.097 0.003 +/- 0.066 0.018 +/- 0.049 08/19/09 0.002 +/- 0.090 -0.038 +/- 0.060 0.010 +/- 0.046 09/09/09 0.080 +/- 0.140 -0.066 +/- 0.071 -0.016 +/- 0.051 09/23/09 0.110 +/- 0.120 -0.046 +/- 0.069 0.000 +/- 0.062 10/07/09 0.080 +/- 0.130 0.150 + 0.130 0.042 +/- 0.061 10/21/09 0.104 +/- 0.097 0.057 +/- 0.070 0.022 +/- 0.053 11/10/09 -0.040 +/- 0.120 0.160 +/- 0.120 -0.003 +/- 0.047 12/16/09 0.010 +/- 0.170 0.000 + 0.110 -0.018 +/- 0.057
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 10, Well Water (pCi/L)
Location Collection Isotope Date 71 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-1 34 03/20/09 -1.3 +/- 7.5 3.0 +/- 23.0 -2.0+/- 3.0 0.2+/- 2.7 -9.0 +/- 24.0 -0.8 +/- 2.5 06/17/09 0.6 +/- 6.0 26.0+/- 30.0 -2.3+/- 3.3 0.6+/- 3.6 -39.0 +/- 31.0 0.0 +/- 2.5 09/21/09 -6.4 +/- 7.2 -6.0 +/- 19.0 -1.2+/- 2.4 -0.4 +/- 2.6 16.0 +/- 23.0 0.7 +/- 1.9 12114109 -3.2 +/- 4.7 12.0+/- 26.0 -0.4+/- 3.3 -0.8 +/- 3.7 -29.0 +/- 28.0 1.0 +/- 2.4 Cs-1 37 Fe-59 H-3 1-131 K-40 La-140 03/20/09 -0.6 +/- 3.0 2.0+/- 6.6 57.0 +/- 84.0 0.9+/- 6.1 19.0 +/- 47.0 -1.3 + 7.5 0 6 06/17/09 -0.2 +/- 3.7 -0.5 +/- 7.6 40.0 +/- 870.0 1.1+/- 7.1 21.0 +/- 49.0 . j +/- 6.0 09/21/09 -0.8 +/- 2.5 0.0+/- 5.3 -410.0+/- 820.0 1.0+/- 7.3 10.0 +/- 37.0 -6.4 +/- 7.2 12/14/09 -0.9 +/- 3.4 4.4+/- 7.0 -50.0 +/- 890.0 0.7+/- 6.4 -13.0 +/- 55.0 -3.2 +/- 4.7 Mn-54 Nb-95 Ru-1 03 Ru-106 Sb-125 Sr-89 03/20/09 -1.4 +/- 2.7 -0.7 +/- 3.3 -1.7+/- 2.9 10.0+/- 25.0 2.4 +/- 6.7 1.6 +/- 4.7 06/17/09 0.4 +/- 2.9 0.7+/- 4.2 -0.2+/- 3.8 -21.0 +/- 32.0 -5.0 +/- 8.9 -3.8 +/- 2.2 09/21/09 -1.5 +/- 2.0 -0.1 +/- 2.7 -0.9+/- 2.6 -15.0 +/- 21.0 0.3 +/- 5.5 -3.3 +/- 2.3 12/14109 -0.2 +/- 3.4 -2.1 +/- 4.3 0.9 +/- 3.5 -18.0 +/- 27.0 -2.1 +/- 9.2 -2.1 +/- 2.4 Sr-90 Th-228 Zn-65 Zr-95 03/20/09 -0.4 +/- 1.1 11.0+/- 14.0 0.0 +/- 11.0 1.6+/- 4.5 06/17/09 -0.6 +/- 0.8 -19.0 +/- 14.0 -4.9+/- 9.3 -1.1 +/- 6.3 09/21/09 -0.8 +/- 0.7 12.3 +/- 8.5 0.0 +/- 4.9 -0.9 +/- 4.0 12/14109 -0.3 +/- 0.7 3.0 +/- 14.0 10.0 +/- 14.0 6.9+/- 6.5 72 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-1 34 03/18/09 -1.8 +/- 5.2 10.0+/- 33.0 4.8 +/- 4.6 -1.5 +/- 5.0 -25.0 + 39.0 0.5 +/- 3.7 06/11/09 6.4 +/- 7.5 20.0+/- 26.0 -0.6+/- 3.1 1.4+/- 3.3 9.0 +/- 30.0 -0.2 +/- 2.7 09/16/09 -4.5 +/- 7.0 -38.0 +/- 36.0 2.0 +/- 4.0 0.4+/- 3.8 -10.0 +/- 37.0 -0.6 +/- 3.7 12/14/09 1.4 +/- 7.4 12.0+/- 24.0 1.6 +/- 3.1 0.8+/- 3.6 -1.0 + 24.0 1.0 +/- 3.2 Cs-1 37 Fe-59 H-3 1-131 K-40 La-140 03/18/09 -1.7 +/- 4.2 -2.7 +/- 9.3 1250.0 +/- 860.0 3.9+/- 8.0 -25.0 +/- 52.0 -1.8 +/- 5.2 06/11/09 -0.9 +/- 2.9 -4.9 +/- 7.1 -280.0+/- 860.0 0.0+/- 8.5 2.0 +/- 50.0 6.4 +/- 7.5 09/16/09 1.6 +/- 4.1 -4.5 +/- 7.4 -520.0+/- 840.0 2.6+/- 8.0 -22.0 +/- 55.0 -4.5 +/- 7.0 12/14/09 -1.8 +/- 3.2 -3.3 +/- 7.8 -40.0 +/- 890.0 0.7+/- 4.5 -9.0 + 50.0 1.4 +/- 7.4 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Sr-89 03/18/09 0.0 +/- 4.1 1.1+/- 5.0 -2.9+/- 4.6 -23.0 +/- 40.0 -7.0 +/- 12.0 0.1 +/- 3.8 06/11/09 1.0 +/- 3.0 0.4+/- 3.9 -1.0+/- 3.7 -16.0 +/- 28.0 1.4 +/- 7.3 1.2 +/- 2.6 09/16/09 2.2 +/- 3.3 -1.2 +/- 4.5 -3.2+/- 4.7 -18.0 +/- 33.0 -4.0 +/- 11.0 1.1 +/- 2.7 12/14/09 -2.8 +/- 3.2 2.5+/- 3.4 -3.7+/- 3.0 -1.0 +/- 30.0 -0.7 +/- 7.7 2.4 +/- 3.3 Sr-90 Th-228 Zn-65 Zr-95 03/18/09 0.9 +/- 1.0 -16.0 + 18.0 -3.0 +/- 11.0 -3.3 +/- 7.5 06/11/09 -0.1 +/- 0.9 -5.0 + 12.0 -7.8+/- 7.7 -0.6 +/- 5.8 09/16/09 -0.5 +/- 0.8 17.0+/- 15.0 5.0 +/- 16.0 0.0+/- 6.4 12/14/09 0.0 +/- 0.9 5.0 +/- 13.0 -16.2 +/- 9.5 3.7+/- 4.9
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 10, Well Water (pCi/L)
Location Collection Isotope Date 76-X Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-134 03/16/09 6.4 +/- 5.9 -12.0+/- 24.0 0.3 +/- 2.6 0.5 +/- 2.6 -14.0 +/- 23.0 1.8 +/- 2.7 06/09/09 -4.9 +/- 6.1 12.0 +/- 21.0 -0.9+/- 2.9 2.8 +/- 3.1 -8.0 +/- 20.0 0.4 +/- 1.9 09/14/09 -3.3 +/- 6.0 -15.0+/- 23.0 1.0 +/- 2.9 0.2 +/- 3.0 -11.0 + 20.0 0.6 +/- 2.0 12/07/09 -5.4 +/- 7.0 -17.0+/- 29.0 4.4 +/- 6.2 1.1 +/- 3.4 25.0 +/- 29.0 -2.5 +/- 2.4 Cs-137 Fe-59 H-3 1-131 K-40 La-140 03/16/09 -0.6 +/- 2.7 1.9 +/- 5.6 510.0 +/- 850.0 -0.8+/- 5.9 -10.0 + 39.0 6.4 +/- 5.9 06/09/09 1.7 +/- 2.9 -4.4+/- 6.0 -560.0+/- 850.0 -5.3+/- 4.5 21.0 +/- 45.0 -4.9 +/- 6.1 09/14/09 -0.4 +/- 3.1 1.1 +/- 5.8 -120.0+/- 840.0 -1.8+/- 5.5 7.0 +/- 45.0 -3.3 +/- 6.0 12/07/09 -2.1 +/- 3.3 -1.5+/- 6.6 -740.0+/- 840.0 5.5 +/- 5.9 -12.0 +/- 43.0 -5.4 +/- 7.0 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Sr-89 03/16/09 -0.5 +/- 2.7 -3.5+/- 3.3 -4.0+/- 2.8 -5.0 +/- 24.0 .5 +/- 7.4 -3.0 +/- 3.6 06/09/09 -1.7 +/- 2.9 0.5 +/- 2.8 -0.6+/- 2.6 17.0 +/- 26.0 2.1 +/- 6.7 0.0 +/- 2.5 09/14/09 -2.0 +/- 2.7 -1.4+/- 3.1 -1.6+/- 2.6 20.0 +/- 24.0 0.5 +/- 6.1 -1.2 +/- 2.7 12/07/09 -1.4 +/- 3.1 0.6 +/- 4.2 0.4 +/- 3.7 -6.0 +/- 27.0 0.3 +/- 9.2 -3.7 +/- 2.8 Sr-90 Th-228 Zn-65 Zr-95 03/16/09 0.6 +/- 0.9 -9.0 +/- 11.0 12.0 +/- 9.5 -1.5+/- 4.6 06/09/09 0.2 +/- 0.8 14.0 +/- 15.0 -5.3+/- 7.7 -0.2+/- 4.9 09/14/09 0.6 +/- 0.8 -1.0 + 12.0 -8.3+/- 6.9 2.5 +/- 4.7 12/07/09 -0.5 +/- 1.0 -3.0 + 12.0 -6.9+/- 7.3 0.0 +/- 5.5 77-X Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-1 34 03/16/09 -0.4 +/- 6.7 3.0 +/- 24.0 -0.9+/- 3.0 -2.0+/- 3.2 -9.0 +/- 27.0 2.4 +/- 3.0 06/11/09 3.9 +/- 7.7 20.0 +/- 37.0 2.5 +/- 3.5 -0.4+/- 4.0 -23.0 +/- 38.0 -2.3 +/- 3.4 09/14/09 -0.5 +/- 6.0 4.0 +/- 21.0 -1.4+/- 2.6 -0.8+/- 3.0 -2.0 +/- 25.0 2.6 +/- 2.1 12/07/09 4.8 +/- 8.7 -13.0+/- 35.0 -1.4+/- 3.5 -1.9+/- 4.3 5.0 +/- 38.0 0.9 +/- 4.5 Cs-137 Fe-59 H-3 1-131 K-40 La-140 03/16/09 -1.2 +/- 3.1 3.3 +/- 6.6 920.0 +/- 850.0 -6.1+/- 5.4 -36.0 +/- 39.0 -0.4 +/- 6.7 06/11/09 -2.6 +/- 4.5 5.4 +/- 8.2 -500.0+/- 860.0 -1.8+/- 8.1 2.0 +/- 48.0 3.9 +/- 7.7 09/14/09 -4.6 +/- 3.1 -4.1+/- 6.6 -320.0+/- 840.0 -3.0+/- 6.2 19.0 +/- 43.0 -0.5 +/- 6.0 12/07/09 -1.2 +/- 3.9 -2.6+/- 7.5 -600.0+/- 860.0 -4.6+/- 6.7 -32.0 +/- 58.0 4.8 +/- 8.7 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Sr-89 03/16/09 0.0 +/- 3.0 -1.0+/- 3.9 0.5 +/- 3.0 -20.0+/- 28.0 2.1 +/- 6.9 0.0 +/- 3.9 06/11/09 -0.3 +/- 3.8 -0.2+/- 5.2 -0.3+/- 4.0 14.0 +/- 38.0 11.0 +/- 12.0 1.5 +/- 3.0 09/14/09 0.9 +/- 2.7 -1.0+/- 3.3 -1.5+/- 2.9 -2.0 +/- 26.0 -1.6 +/- 7.1 0.7 +/- 3.0 12/07/09 -2.7 +/- 4.0 -0.5+/- 5.0 -3.8+/- 4.9 -1.0 +/- 34.0 -2.0 +/- 12.0 -0.2 +/- 3.2 Sr-90 Th-228 Zn-65 Zr-95 03/16/09 0.6 +/- 1.0 -8.0 +/- 13.0 13.0 +/- 12.0 -2.4+/- 4.5 06/11/09 0.0 +/- 1.0 -2.0 +/- 14.0 -1.0 +/- 12.0 1.4 +/- 6.8 09/14/09 0.8 +/- 0.9 3.0 +/- 15.0 5.4 + 9.4 -1.7+/- 4.9 12/07/09 ý0.6 +/- 1.1 8.0 + 13.0 4.0 +/- 14.0 -1.0+/- 8.1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 10, Well Water (pCilL)
Location Collection Isotope Date Date 78-X Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-134 03/16/09 1.2 +/- 6.6 6.0 +/- 25.0 0.8 +/- 3.2 1.2+/- 3.4 13.0+/- 24.0 -1.4 +/- 2.1 06/11/09 6.5 +/- 6.9 2.0 +/- 31.0 0.7 +/- 4.4 -3.1 +/- 4.2 19.0+/- 38.0 4.5 +/- 3.2 09/14/09 -9.1 +/- 7.1 16.0+/- 23.0 -2.2+/- 3.2 0.4+/- 3.3 14.0 +/- 23.0 0.4 +/- 2.1 12/07/09 7.0 +/- 7.7 8.0 +/- 34.0 -1.9+/- 4.1 0.7+/- 4.2 17.0+/- 33.0 -1.4 +/- 2.6 Cs-1 37 Fe-59 H-3 1-131 K-40 La-140 03/16/09 2.9 +/- 3.1 0.8+/- 8.0 1070.0 +/- 860.0 -0.4 +/- 5.0 5.0 +/- 51.0 1.2 +/- 6.6 06/11/09 1.1 +/- 4.2 0.9+/- 9.2 -250.0+/- 860.0 3.2+/- 7.4 -16.0 +/- 56.0 6.5 +/- 6.9 09/14/09 0.8 1 3.7 4.5+/- 6.1 410.0 +/- 860.0 1.7+/- 5.4 -24.0 +/- 45.0 -9.1 +/- 7.1 0.0 3.7 12/07/09 -2.1 +/- 8.1 -590.0+/- 850.0 4.1+/- 6.6 35.0 +/- 50.0 7.0 +/- 7.7 M!-54 Nb-95 Ru-103 Ru-1 06 Sb-125 Sr-89 03/16/09 0.0 i3.2 0.6+/- 3.8 -0.4+/- 3.3 -12.0 +/- 25.0 6.7+/- 7.5 -1.3 +/- 3.4 06/11/09 -3.4 + 4.1 -0.8 +/- 4.2 -2.4+/- 4.8 -29.0 +/- 42.0 -1.3 +/- 9.5 -0.6 +/- 2.4 09/14/09 0.7 +/- 2.8 1.9+/- 3.9 0.1 +/- 3.2 8.0 +/- 24.0 4.2+/- 7.8 -0.8 +/- 2.8 12/07/09 -1.6 +/- 3.7 0.0+/- 4.8 -2.7+/- 4.0 8.0 +/- 32.0 3.0 + 11.0 -1.2 +/- 2.6 Sr-90 Th-228 Zn-65 Zr-95 03/16/09 0.1 +/- 0.8 2.0 +/- 13.0 -7.2+/- 7.9 -0.6 +/- 5.6 06/11/09 0.4 +/- 0.8 -6.0 +/- 15.0 -2.0 + 11.0 1.7+/- 6.2 09/14/09 -0.3 +/- 0.8 15.0+/- 12.0 2.0 +/- 6.5 5.1+/- 5.8 12/07/09 -0.2 +/- 0.9 5.0 +/- 13.0 -14.4 +/- 9.8 -5.2 +/- 6.4 79 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-1 34 01/13/09 6.1 +/- 6.8 -15.0 +/- 31.0 -0.4+/- 2.8 1.5+/- 3.2 -9.0 + 27.0 -0.2 +/- 2.6 03/18/09 2.7 +/- 7.6 -11.0 +/- 33.0 -1.6+/- 3.2 -1.8 +/- 4.7 -20.0 +/- 33.0 0.6 +/- 3.0 06/11/09 -1.8 +/- 7.7 4.0 +/- 23.0 -2.1+/- 2.8 -0.8 +/- 3.0 -27.0 +/- 21.0 0.4 +/- 1.9 09/16/09 0.1 +/- 6.1 -7.0 +/- 33.0 1.3 +/- 4.1 4.1+/- 4.1 -4.0 +/- 31.0 0.5 +/- 4.7 12/14/09 0.0 +/- 6.4 8.0 +/- 22.0 0.5 +/- 3.0 2.1+/- 3.5 -20.0 + 24.0 -1.8 + 3.1 Cs-137 Fe-59 H-3 1-131 K-40 La-140 01/13/09 -2.3 +/- 3.9 4.5+/- 6.2 -820.0+/- 900.0 3.1+/- 5.8 61.0 +/- 46.0 6.1 +/- 6.8 03/18/09 -0.5 +/- 316 -2.9 +/- 7.6 900.0 +/- 850.0 0.2+/- 7.6 17.0+/- 50.0 2.7 +/- 7.6 06/11/09 -0.8 +/- 2.6 -4.2 +/- 7.1 -550.0+/- 860.0 4.2+/- 7.7 49.0 +/- 30.0 -1.8 +/- 7.7 09/16/09 -0.3 +/- 4.2 0.7+/- 8.8 -270.0+/- 850.0 0.1 +/- 6.6 1.0 +/- 58.0 0.1 +/- 6.1 12/14/09 1.7 +/- 3.2 2.7+/- 7.1 -230.0+/- 870.0 0.6+/- 5.4 -12.0 +/- 51.0 0.0 +/-- 6.4 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Sr-89 01/13/09 1.3 +/- 3.2 -0.7 +/- 4.0 -1.8+/- 3.8 17.0+/- 30.0 5.0+/- 9.6 1.5 +/- 3.0 03/18/09 -0.8 +/- 4.0 -4.3 +/- 4.2 -1.6+/- 3.8 -8.0 +/- 36.0 6.0 +/- 10.0 -2.0 +/- 3.6 06/11/09 0.9 +/- 2.6 -1.9 +/- 3.1 -1.8+/- 2.7 2.0 +/- 26.0 -1.2 +/- 6.3 0.7 +/- 2.8 09/16/09 -0.4 +/- 4.4 1.8+/- 5.1 -2.5+/- 4.3 23.0+/- 28.0 -6.0 +/- 11.0 -0.6 +/- 2.6 12/14/09 -1.7 +/- 3.1 -1.1 +/- 3.3 0.3 +/- 3.2 -6.0 +/- 29.0 1.6+/- 7.4 3.4 + 3.4 Sr-90 Th-228 Zn-65 Zr-95 01/13/09 -0.5 +/- 1.1 9.0 +/- 16.0 -10.5 +/- 8.2 -1.1 +/- 5.9 03/18/09 0.4 +/- 0.9 13.0+/- 15.0 -14.0 +/- 9.5 -4.5 +/- 7.6 06/11/09 0.2 +/- 1.0 9.0 +/- 12.0 -6.3+/- 6.9 -0.1 +/- 4.7 09/16/09 0.0 +/- 0.8 6.0 +/- 21.0 -7.2+/- 9.8 3.5+/- 7.5 12/14/09 0.4 +/- 1.0 0.0 +/- 15.0 2.0 +/- 14.0 -0.9 +/- 5.1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 10, Well Water (pCi/L)
Location Collection Isotope Date 80 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-134 03/20/09 2.5 1 7.1 -9.0 +/- 25.0 0.5+/- 3.1 -0.4 +/- 3.5 0.0 +/- 29.0 3.6 +/- 3.3 06/17/09 1.8 +/- 7.3 3.0 +/- 29.0 0.5+/- 4.0 -0.3 +/- 3.6 -23.0+/- 33.0 0.5 +/- 3.0 09/21/09 3.2 +/- 6.7 17.0+/- 20.0 0.1+/- 2.6 1.1+/- 2.4 -13.0+/- 21.0 0.0 +/- 1.6 12/14/09 -2.8 +/- 4.6 -20.0 +/- 24.0 -3.2+/- 2.8 0.1+/- 2.6 -11.0+/- 23.0 -0.2 +/- 2.7 Cs-1 37 Fe-59 H-3 1-131 K-40 La-140 03/20/09 1.3 +/- 3.4 0.0+/- 7.1 1010.0 +/- 860.0 2.3+/- 7.9 -4.0 +/- 51.0 2.5 +/- 7.1 06/17/09 -4.5 +/- 4.1 2.9+/- 7.0 580.0+/- 900.0 2.4+/- 6.5 11.0 +/- 61.0 1.8 +/- 7.3 09/21/09 2.3 +/- 2.2 4.0+/- 5.7 620.0+/- 860.0 6.9+/- 7.1 22.0 +/- 38.0 3.2 +/- 6.7 12/14/09 -2.3 +/- 2.6 1.2+/- 5.4 -180.0+/- 880.0 2.9+/- 4.5 -15.0+/- 35.0 -2.8 +/- 4.6 Mn-54 Nb-95 Ru-103 Ru-1 06 Sb-125 Sr-89 03/20/09 -0.4 +/- 3.1 -1.9 +/- 3.9 -3.2+/- 3.5 -22.0 +/- 30.0 -5.3+/- 7.9 -1.5 +/- 2.7 06/17/09 -3.2 +/- 4.3 -2.0 +/- 5.1 -0.7+/- 4.2 -6.0 + 39.0 1.0 + 10.0 -0.9 +/- 2.6 09/21/09 0.9 +/- 2.4 0.5+/- 3.2 -1.4+/- 2.7 -2.0 +/- 20.0 2.7 + 5.6 0.3 +/- 2.5 12/14/09 -2.1 +/- 2.5 3.6+/- 4.3 -4.0_+/-2.9 13.0+/- 21.0 2.9 +/- 7.3 0.5 +/- 3.3 Sr-90 Th-228 Zn-65 Zr-95 03/20/09 0.1 +/- 0.9 -1.0 +/- 15.0 2.0 +/- 15.0 -2.8 +/- 5.3 06/17/09 -0.5 +/- 0.9 -7.0 +/- 15.0 18.0++/- 18.0 0.0+/- 6.9 09/21/09 -0.3 +/- 0.8 1.5+/- 9.4 9.2-+/- 9.0 1.1+/- 4.3 12/14/09 0.6 +/- 1.0 -1.0 +/- 11.0 12.0+/- 10.0 -1.1 +/- 4.3 81 Ba-140 Be-7 Co--58 Co-60 Cr-51 Cs-I34 03/20/09 -2.6 +/- 5.4 7.0 +/- 21.0 0.1-+/- 2.9 1.1+/- 2.7 -18.0+/- 25.0 -0.4 +/- 2.1 06/17/09 0.0 +/- 5.6 5.0 +/- 24.0 -2.4+/- 2.7 0.2+/- 3.2 -22.0+/- 25.0 1.0 +/- 2.2 09/21/09 1.1 +/- 7.4 12.0+/- 19.0 -1.5+/- 2.7 -0.4 +/- 2.5 3.0 +/- 20.0 -1.0 +/- 2.2 11/04/09 0.6 +/- 5.8 -20.0 +/- 23.0 0.4+/- 2.2 -2.9 +/- 2.3 18.0 +/- 25.0 1.5 +/- 2.2 Cs-1 37 Fe-59 H-3 1-131 K-40 La-140 03/20/09 1.9 +/- 2.7 1.0+/- 6.2 880.0+/- 850.0 2.4+/- 6.8 -11.0+/- 35.0 -2.6 +/- 5.4 06/17/09 -3.3 +/- 2.8 0.5+/- 6.1 -510.0+/- 870.0 -3.7 +/- 4.9 -15.0+/- 39.0 0.0 +/- 5.6 09/21/09 -0.1 +/- 2.2 -5.7 +/- 6.0 -130.0+/- 850.0 1.4+/- 7.4 12.0 +/- 40.0 1.1 +/- 7.4 11/04/09 -0.9 +/- 2.4 -0.9 +/- 4.7 840.0+/- 700.0 6.5+/- 8.0 -18.0+/- 30.0 0.6 +/- 5.8 Mn-54 Nb-95 Ru-103 Ru-1 06 Sb-125 Sr-89 03/20/09 -0.7 +/- 2.6 -0.3 +/- 3.3 -2.4+/- 3.3 5.0 +/- 24.0 -2.7+/- 6.8 -1.3 +/- 3.0 06/17/09 -4.1 +/- 3.0 6.4+/- 4.4 -3.5+/- 3.3 -13.0 + 27.0 5.4 +/- 7.1 2.8 +/- 2.7 09/21/09 -0.1 +/- 2.3 -0.5 +/- 2.8 -1.0+/- 2.4 -1.0 +/- 20.0 1.8 +/- 5.4 0.5 +/- 3.0 11/04/09 -1.5 +/- 2.4 -0.3 +/- 2.9 -0.8+/- 3.0 -22.0 + 22.0 -3.0+/- 5.9 -3.1 +/- 2.9 Sr-90 Th-228 Zn-65 Zr-95 03/20/09 0.1 +/- 1.0 1.0 +/- 11.0 -6.0+/- 6.6 -1.2 +/- 4.5 06/17/09 0.0 +/- 1.0 -4.0 +/- 11.0 1.9+/- 6.1 4.1+/- 4.8 09/21/09 0.3 +/- 0.9 4.1+/- 9.4 6.7+/- 9.4 -3.2 +/- 4.0 11/04/09 1.2 +/- 1.0 -10.3 +/- 9.6 4.7_+/-4.1 1.5+/- 4.0
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 10, Well Water (pCiIL)
Location Collection Isotope Date 82 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-134 03/18/09 6.0 +/- 6.7 13.0+/- 34.0 0.8+/- 3.5 -2.0 +/- 3.7 -25.0 + 35.0 -1.1 +/- 4.0 06/11/09 1.1 +/- 8.1 6.0 + 28.0 -0.9 +/- 3.1 1.6+/- 3.1 -9.0 +/- 30.0 0.8 +/- 2.7 09/16/09 -1.2 +/- 7.7 -19.0 + 26.0 -1.5 +/- 3.4 -0.3 +/- 3.3 -2.0 +/- 25.0 1.7 +/- 2.4 12/14/09 0.6 +/- 7.0 10.0+/- 31.0 -2.6 +/- 3.9 -2.6 +/- 4.8 -19.0 +/- 30.0 -1.6 +/- 2.7 Cs-137 Fe-59 H-3 1-131 K-40 La-140 03/18/09 -5.1 +/- 4.0 -2.8 +/- 8.7 600.0+/- 830.0 2.7+/- 8.2 -10.0 +/- 54.0 6.0 +/- 6.7 06/11/09 -1.6 +/- 3.3 -2.4 +/- 6.1 -50.0 +/- 860.0 7.3+/- 8.6 -5.0 +/- 44.0 1.1 +/- 8.1 09/16/09 0.1 +/- 3.4 -2.3 +/- 7.8 210.0+/- 840.0 -1.4 +/- 6.1 -16.0 +/- 52.0 -1.2 +/- 7.7 12/14/0] -1.7 +/- 4.3 4.0+/- 8.1 430.0+/- 900.0 1.8+/- 5.6 16.0 +/- 56.0 0.6 +/- 7.0 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Sr-89 03/18/06 1.7 +/- 3.3 -0.7 +/- 4.6 -3.6 +/- 3.9 8.0+/- 36.0 2.9 +/- 9.8 -0.4 +/- 3.5 06/11/09 0.0 +/- 3.0 0.6+/- 3.9 0.4+/- 3.5 -12.0 +/- 32.0 0.7 +/- 7.7 1.4 +/- 2.9 09/16/09 0.2 +/- 3.5 -2.2 +/- 3.8 1.3+/- 3.0 -17.0 +/- 32.0 1.7 +/- 8.4 -1.2 +/- 2.5 12/14/09 0.1 +/- 3.8 1.1+/- 6.8 1.6+/- 3.9 9.0 +/- 34.0 -7.1 +/- 9.5 0.9 +/- 3.0 Sr-90 Th-228 Zn-65 Zr-95 03/18/09 0.7 +/- 0.9 -11.0 +/- 16.0 13.0+/- 15.0 -6.6 +/- 6.2 06/11/09 0.1 +/- 1.0 -2.0 +/- 12.0 -7.3 +/- 7.7 -1.4 +/- 5.3 09/16/09 0.1 +/- 0.8 4.0 +/- 15.0 18.0+/- 16.0 -1.8 +/- 5.3 12/14/09 -0.7 +/- 0.9 -4.0 +/- 16.0 10.0+/- 17.0 -0.7 +/- 6.7 83 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-1 34 03/18/09 0.0 +/- 6.9 1.0 +/- 33.0 -1.6 +/- 3.6 1.9+/- 4.2 5.0 +/- 34.0 4.0 +/- 3.7 06/17/09 -4.4 +/- 7.5 -10.0 +/- 26.0 -0.9 +/- 3.7 0.0+/- 4.4 0.0 +/- 25.0 -1.0 +/- 2.6 09/16/09 -4.9 +/- 7.4 -7.0 +/- 30.0 -3.1 +/- 3.3 1.3+/- 3.7 4.0 +/- 32.0 2.7 +/- 3.6 11/09/09 0.0 +/- 6.4 15.0+/- 30.0 0.9+/- 3.5 2.1+/- 4.3 5.0 +/- 30.0 0.4 +/- 2.4 Cs-137 Fe-59 H-3 1-131 K-40 La-140 03/18/09 3.3 +/- 5.9 -2.6 +/- 6.7 1060.0 + 860.0 1.7+/- 7.3 7.0 +/- 52.0 0.0 +/- 6.9 06/17/09 0.0 +/- 3.6 -0.7 +/- 8.4 -400.0 +/- 860.0 3.5+/- 6.0 -12.0 +/- 48.0 -4.4 +/- 7.5 09/16/09 -4.1 +/- 3.6 0.4+/- 7.2 -380.0 +/- 830.0 5.0+/- 6.6 5.0 +/- 47.0 -4.9 +/- 7.4 11/09/09 -1.0 +/- 4.4 4.3+/- 8.0 670.0+/- 670.0 2.7+/- 6.2 51.0 +/- 53.0 0.0 +/- 6.4 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Sr-89 03/18/09 -1.7 +/- 3.7 1.4+/- 6.1 -3.2 +/- 4.1 -19.0 +/- 33.0 10.0 +/- 11.0 2.2 +/- 4.2 06/17/09 -4.6 +/- 3.9 1.5+/- 6.2 -0.6 +/- 3.5 26.0+/- 29.0 -6.5 +/- 9.5 1.6 +/- 2.9 09/16/09 -2.3 +/- 3.1 2.3+/- 6.3 2.8+/- 3.3 16.0+/- 31.0 3.1 +/- 8.6 0.1 +/- 2.6 11/09/09 0.1 +/- 3.2 -4.6 +/- 4.6 0.2 +/- 3.8 -8.0 +/- 30.0 -3.2 +/- 9.2 1.3 +/- 2.6 Sr-90 Th-228 Zn-65 Zr-95 03/18/09 1.5 +/- 1.1 -3.0 +/- 15.0 -7.0 +/- 17.0 0.0+/- 6.3 06/17/09 0.1 +/- 1.1 -7.0 +/- 14.0 17.0+/- 18.0 -4.8 +/- 5.8 09/16/09 0.5 +/- 0.8 3.0 +/- 14.0 4.0 +/- 17.0 -0.8 +/- 5.7 11/09/09 0.1 +/- 0.8 -3.0 +/- 15.0 2.0 +/- 15.0 5.4+/- 6.5
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 10, Well Water (pCi/L)
Location Collection Isotope Date 84 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-134 03/20/09 -8.4 +/- 6.2 17.0+/- 25.0 -1.3+/- 3.4 -0.3+/- 3.9 0.0 +/- 26.0 -1.2 +/- 2.3 06/17/09 0.8 +/- 7.1 -3.0 +/- 37.0 -2.5+/- 4.1 0.8 +/- 3.9 11.0 +/- 33.0 -1.8 +/- 3.4 09/16/09 -8.5 +/- 5.9 -18.0 + 32.0 -0.2+/- 3.4 -1.5+/- 3.3 -3.0 +/- 32.0 -1.4 +/- 3.6 11/09/09 -0.4 +/- 5.1 -3.0 + 26.0 -0.3+/- 2.6 -0.7+/- 2.3 10.0 +/- 24.0 0.5 +/- 2.8 Cs-1 37 Fe-59 H-3 1-131 K-40 La-140 03/20/09 0.8 +/- 3.3 -4.4 +/- 7.2 930.0 +/- 870.0 -2.5+/- 6.5 -44.0+/- 47.0 -8.4 +/- 6.2 06/17/09 -2.0 +/- 3.9 2.5+/- 7.7 400.0 +/- 880.0 -3.7+/- 7.9 -57.0+/- 58.0 0.8 +/- 7.1 09/16/09 -0.4 +/- 3.5 -0.3 +/- 7.1 -210.0+/- 830.0 -5.8+/- 6.9 23.0 +/- 55.0 -8.5 +/- 5.9 11/09/09 -1.3 +/- 2.9 -5.0 +/- 5.3 620.0 +/- 680.0 -1.3+/- 5.4 -13.0+/- 35.0 -0.4 +/- 5.1 Mn-54 Nb-95 Ru-1 03 Ru-106 Sb-125 Sr-89 03/20/09 -0.3 +/- 3.1 -5.8 +/- 4.2 -2.4+/- 3.5 -6.0 +/- 26.0 3.1 +/- 7.8 -0.8 +/- 2.6 06/17/09 0.3 +/- 4.2 -4.4 +/- 4.4 -0.3+/- 4.1 5.0 +/- 38.0 -5.0 +/- 11.0 0.6 +/- 2.4 09/16/09 -0.2 +/- 3.8 -0.8 +/- 4.7 -0.8+/- 3.8 -3.0 +/- 32.0 -7.2+/- 9.3 1.1 +/- 2.7 11/09/09 -1.1 +/- 2.5 0.6+/- 3.4 -0.3+/- 2.9 -7.0 +/- 23.0 -4.4+/- 7.6 -0.8 +/- 2.5 Sr-90 Th-228 Zn-65 Zr-95 03/20/09 0.1 +/- 0.8 3.0 +/- 14.0 0.9 +/- 9.2 3.1 +/- 6.1 06/17/09 0.1 +/- 0.8 -9.0 +/- 14.0 -11.0+/- 11.0 -1.3+/- 6.6 09/16/09 -0.1 +/- 0.8 4.0 +/- 14.0 1.0 +/- 15.0 -0.8+/- 6.3 11/09/09 0.8 +/- 0.9 4.0 +/- 10.0 -6.6+/- 8.3 4.4 +/- 5.3 85 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-134 03/25/09 -0.6 +/- 6.7 -9.0 +/- 25.0 -2.9+/- 3.2 2.2 +/- 3.2 -1.0 +/- 28.0 0.0 +/- 2.1 06/22/09 -1.7 +/- 7.5 -13.0 +/- 28.0 -6.6+/- 3.9 0.0 +/- 4.0 -17.0+/- 29.0 -0.5 +/- 2.5 09/21/09 11.5 +/- 7.9 5.0 +/- 20.0 -1.0+/- 2.8 1.5 +/- 2.6 -18.0+/- 22.0 0.9 +/- 2.1 12/21/09 1.5 +/- 5.3 -7.0 +/- 19.0 -0.2+/- 1.9 -1.2+/- 2.0 -4.0 +/- 21.0 -0.4 +/- 1.3 Cs-137 Fe-59 H-3 1-131 K-40 La-140 03125/09 0.4 +/- 5.3 0.4+/- 6.6 -400.0+/- 880.0 -5.7+/- 7.4 -4.0 +/- 41.0 -0.6 +/- 6.7 06/22/09 1.1 +/- 3.7 7.1+/- 7.6 -410.0+/- 860.0 -1.2+/- 7.5 -2.0 +/- 51.0 -1.7 +/- 7.5 09/21/09 -0.1 +/- 2.5 2.2+/- 5.8 300.0 +/- 860.0 2.7 +/- 8.1 -7.0 +/- 39.0 11.5 +/- 7.9 12/21/09 -1.3 +/- 2.0 -1.0 +/- 4.7 70.0 +/- 890.0 -5.0+/- 6.7 -1.0 +/- 30.0 1.5 +/- 5.3 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Sr-89 03/25/09 -0.3 +/- 2.9 6.1+/- 5.6 -0.4+/- 3.3 4.0 +/- 26.0 -0.2+/- 7.5 -8.4 +/- 2.9 06/22/09 -4.6 +/- 3.6 1.7+/- 7.2 -0.4+/- 3.4 -19.0+/- 30.0 1.3 +/- 8.2 1.3 +/- 3.7 09/21/09 -0.1 +/- 2.5 1.6+/- 4.3 -1.6+/- 2.6 -5.0 +/- 22.0 -2.6+/- 5.7 2.4 +/- 2.4 12/21/09 -0.8 +/- 1.9 -0.3 +/- 2.7 -0.7+/- 2.4 -16.0+/- 16.0 -2.4+/- 5.3 0.3 +/- 2.7 Sr-90 Th-228 Zn-65 Zr-95 03/25/09 0.9 +/- 0.7 8.0 +/- 10.0 4.0 +/- 14.0 1.1 +/- 5.0 06/22/09 -0.4 +/- 0.8 -7.0 +/- 14.0 11.0 +/- 17.0 2.2 +/- 5.9 09/21/09 0.5 +/- 0.7 10.0+/- 12.0 8.0 +/- 10.0 0.3 +/- 4.1 12/21/09 0.7 +/- 0.6 5.5+/- 6.3 -0.3+/- 7.5 1.0 +/- 3.5
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 10, Well Water (pCi/L)
Location Collection Isotope Date 86 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-134 03/25/09 -3.0 +/- 6.9 6.0 +/- 27.0 0.3 +/- 3.6 0.7 +/- 3.1 -11.0+/- 29.0 -1.1 +/- 2.6 06/22/09 6.8 +/- 8.5 -26.0+/- 34.0 0.7 +/- 3.9 -1.9+/- 5.4 -45.0+/- 39.0 -0.8 4.3 09/21/09 -1.6 +/- 7.6 -14.0+/- 20.0 -0.6+/- 2.4 -0.8+/- 2.8 -13.0+/- 25.0 0.1 2.3 12/21/09 5.3 +/- 5.4 -10.0+/- 23.0 0.1 +/- 2.1 0.8 +/- 2.2 0.0 +/- 21.0 0.7 + 2.1 Cs-1 37 Fe-59 H-3 1-131 K-40 La-140 03/25/09 -2.3 +/- 3.2 -6.1+/- 5.9 600.0 + 920.0 -2.3+/- 7.8 18.0 +/- 47.0 -3.0 +/- 6.9 06/22/09 -1.2 +/- 4.7 5.0 +/- 11.0 10.0 +/- 860.0 7.9 +/- 8.9 -11.0+/- 59.0 6.8 +/- 8.5 09/21/09 -1.1 + 2.3 -0.5+/- 5.7 -420.0+/- 830.0 -1.5+/- 7.5 32.0 +/- 36.0 5-1.6+/- 7.6 12/21/09 1.0 +/- 2.2 -1.2+/- 4.1 480.0 +/- 900.0 -1.6+/- 6.8 -30.0+/- 30.0 5.3 + 5.4 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Sr-89 03/25/09 -0.6 +/- 3.2 0.7 +/- 3.9 -1.8+/- 3.5 18.0 +/- 27.0 7.2 + 7.8 -7.0 +/- 3.0
+
06/22/09 1.4 +/- 3.9 -7.1+/- 5.3 -1.8+/- 4.7 -20.0+/- 43.0 0.0 + 11.0 -2.0 4.1 09/21/09 -0.4 +/- 2.2 0.6 +/- 2.8 -1.1+/- 2.5 -6.0 +/- 20.0 -2.3+/- 5.5 1.6 +/- 3.3 12/21/09 -0.7 +/- 2.0 1.2 +/- 2.8 -1.2+/- 2.5 -3.0'+/- 18.0 5.3 +/- 5.7 3.5 +/- 3.4 Sr-90 Th-228 Zn-65 Zr-95 03/25/09 0.3 +/- 0.7 -6.0 +/- 13.0 -4.7+/- 7.2 -4.3+/- 5.6 06/22/09 -0.9 +/- 1.0 -10.0+/- 19.0 -15.6 +/- 9.9 1.2 +/- 8.1 09/21/09 0.7 +/- 1.1 -3.9+/- 9.6 -0.7+/- 5.0 -0.5+/- 3.7 12/21/09 0.3 +/- 0.8 7.0 +/- 9.2 -0.2+/- 4.4 -2.4+/- 3.8
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 12, Fruits & Vegetables (pCilg Wet)
Location Collection Sample Type Isotope Date 25 Ba-140 Be-7 Ce-141 Ce-144 Co-58 06/10/09 LETTUCE 0.000 + 0.059 0.120 +/- 0.250 0.011 +/- 0.036 0.060 +/- 0.130 0.007 +/- 0.024 06/11/09 STRAWBERRIES -0.014 +/- 0.025 0.070 +/- 0.140 -0.004 +/- 0.024 -0.027 +/- 0.088 0.000 +/- 0.013 08/11/09 BLUEBERRIES -0.017 + 0.034 0.020 +/- 0.140 0.012 +/- 0.025 -0.012 +/- 0.079 -0.001 +/- 0.017 09/08/09 APPLES -0.012 +/- 0.020 0.016 +/- 0.049 0.004 +/- 0.009 0.009 +/- 0.023 -0.002 +/- 0.006 09/08/09 KALE 0.006 +/- 0.016 0.021 +/- 0.048 0.008 +/- 0.009 -0.010 +/- 0.026 -0.004 +/- 0.006 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 06/10/09 LETTUCE 0.013 +/- 0.029 0.070 +/- 0.270 0.005 +/- 0.020 -0.010 +/- 0.035 0.012 +/- 0.083 06/11/09 STRAWBERRIES -0.007 +/- 0.015 0.000 +/- 0.150 -0.009 +/- 0.012 -0.011 +/- 0.018 0.005 +/- 0.028 08/11/09 BLUEBERRIES 0.009 +/- 0.017 0.100 +/- p.120 -0.001 +/- 0.013 0.005 +/- 0.015 -0.012 +/- 0.032 09/08/09 APPLES -0.005 +/- 0.006 0.010 +/- p.055 0.002 +/- 0.005 0.006 +/- 0.006 0.006 +/- 0.014 09/08/09 KALE -0.003 +/- 0.005 0.031 +/- .055 0.002 +/- 0.004 0.003 +/- 0.005 0.005 +/- 0.013 1-131 K-40 La-140 Mn-54 Nb-95 06/10/09 LETTUCE 0.061 + 0.043 2.390 +/- 0.950 0.000 +/- 0.059 -0.005 +/- 0.033 0.004 +/- 0.034 06/11/09 STRAWBERRIES -0.025 +/- 0.025 1.040 +/- 0.370 -0.014 +/- 0.025 -0.008 +/- 0.017 -0.002 +/- 0.018 08/11/09 BLUEBERRIES 0.006 +/- 0.026 0.350 +/- 0.340 -0.017 +/- 0.034 0.003 +/- 0.014 -0.015 +/- 0.020 09/08/09 APPLES -0.024 +/- 0.025 0.850 +/- 0.140 -0.012 +/- 0.020 0.006 +/- 0.006 -0.002 +/- 0.007 09/08/09 KALE -0.035 +/- 0.031 3.970 +/- 0.170 0.006 +/- 0.016 -0.001 +/- 0.005 -0.004 +/- 0.007 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 06/10/09 LETTUCE -0.007 +/- 0.026 0.200 +/- 0.290 -0.098 +/- 0.082 -0.010 +/- 0.100 0.024 +/- 0.048 06/11/09 STRAWBERRIES 0.006 + 0.019 0.020 +/- 0.140 -0.027 +/- 0.043 -0.012 +/- 0.062 0.000 +/- 0.037 08/11/09 BLUEBERRIES -0.011 +/- 0.018 -0.050 +/- 0.160 0.013 +/- 0.050 -0.045 +/- 0.064 0.008 +/- 0.039 09/08/09 APPLES 0.001 +/- 0.006, -0.030 +/- 0.056 -0.005 +/- 0.013 -0.002 +/- 0.027 0.014 +/- 0.014 09/08/09 KALE -0.003 +/- 0.008 0.001 +/- 0.047 0.011 +/- 0.013 -0.006 +/- 0.025 -0.006 +/- 0.013 Zr-95 06/10/09 LETTUCE 0.005 + 0.049 06/11/09 STRAWBERRIES -0.009 +/- 0.027 08/11/09 BLUEBERRIES 0.001 +/- 0.028 09/08/09 APPLES 0.007 + 0.010 09/08/09 KALE 0.008 + 0.010 26-C Ba-140 Be-7 Ce-141 Ce-144 Co-58 06/10/09 STRAWBERRIES 0.016 +/- 0.019 0.020 +/- 0.150 0.019 +/- 0.026 -0.024 +/- 0.084 0.014 +/- 0.015 06/11/09 LETTUCE 0.009 +/- 0.044 -0.090 +/- 0.150 -0.019 +/- 0.017 0.078 +/- 0.086 0.000 +/- 0.021 09/09/09 PEACHES -0.002 +/- 0.020 0.026 +/- 0.063 -0.002 +/- 0.012 -0.020 +/- 0.025 0.006 +/- 0.007 09/09/09 SWISS CHARD 0.015 + 0.019 0.080 +/- 0.070 0.000 +/- 0.010 0.012 +/- 0.030 -0.001 +/- 0.007 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 06/10/09 STRAWBERRIES 0.007 + 0.021 -0.070 +/- 0.170 0.000 +/- 0.013 -0.011 +/-0.015 -0.009 +/- 0.039 06/11/09 LETTUCE -0.015 +/- 0.021 -0.050 +/- 0.130 0.003 +/- 0.014 -0.005 +/- 0.019 0.029 +/- 0.037 09/09/09 PEACHES -0.003 +/- 0.007 0.027 +/- 0.063 0.003 +/- 0.005 0.001 +/- 0.010 0.001 +/- 0.016 09/09/09 SWISS CHARD 0.005 +/- 0.008 -0.069 +/- 0.070 0.002 +/- 0.006 0.001 +/- 0.007 -0.002 +/- 0.018 1-131 K-40 La-140 Mn-54 Nb-95 06/10/09 STRAWBERRIES 0.006 +/- 0.026 1.310 +/- 0.410 0.016 +/- 0.019 0.003 +/- 0.014 0.017 +/-0.019 06/11/09 LETTUCE 0.004 +/- 0.031 1.020 +/- 0.480 0.009 +/- 0.044 0.005 +/- 0.020 -0.002 +/- 0.019 09/09/09 PEACHES 0.021 +/- 0.028 1.850 +/- 0.180 -0.002 +/- 0.020 -0.002 +/- 0.006 -0.002 +/- 0.009 09/09/09 SWISS CHARD -0.001 +/- 0.029 4.730 +/- 0.250 0.015 +/- 0.019 -0.006 +/- 0.006 -0.003 +/- 0.008 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 06110/09 STRAWBERRIES -0.009 +/- 0.019 0.060 +/- 0.160 -0.004 +/- 0.046 0.040 +/- 0.066 -0.027 +/- 0.039 06/11/09 LETTUCE 0.000 +/- 0.021 0.040 +/- 0.210 0.000 +/- 0.051 0.041 +/- 0.097 -0.004 +/- 0.043
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 12, Fruits & Vegetables (pCi/g Wet)
Location Collection Sample Type Isotope Date 26-C Ru-1 03 Ru-1 06 Sb-125 Th-228 Zn-65 09/09/09 PEACHES 0.002 +/- 0.008 -0.046 +/- 0.057 0.005 +/- 0.017 0.030 +/- 0.036 -0.001 +/- 0.015 09/09/09 SWISS CHARD -0.007 +/- 0.007 0.042 +/- 0.062 -0.016 +/- 0.015 -0.013 +/- 0.032 0.004 +/- 0.016 Zr-95 06/10/09 STRAWBERRIES 0.018 +/- 0.031 06/11/09 LE'TUCE -0.017 +/- 0.028 09/09/09 PEACHES -0.007 +/- 0.013 09/09/09 SWISS CHARD -0.002 +/- 0.012
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 13, Broadleaf Vegetation (pCilg Wet)
Location Collection Isotope Date 01 Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 05/26/09 0.029 +/- 0.046 G 0.860 +/- 0.390 -0.012 +/- 0.029 0.080 +/- 0.110 0.020 +/- 0.027 0.005 +/- 0.030 06/17/09 -0.038 +/- 0.085 0.870 +/- 0.390 0.007 +/- 0.039 -0.090 +/- 0.100 -0.030 +/- 0.026 -0.018 +/- 0.030 07/15/09 0.008 +/- 0.083 1.390 +/- 0.500 -0.010 +/- 0.038 0.000 +/- 0.110 -0.003 +/- 0.031 -0.009 +/- 0.035 08/25/09 -0.028 +/- 0.061 1.170 +/- 0.260 -0.008 +/- 0.030 -0.052 +/- 0.081 0.003 +/- 0.020 -0.012 +/- 0.018 09/15/09 0.000 +/- 0.055 1.650 +/- 0.390 0.009 +/- 0.033 -0.010 +/- 0.110 -0.010 +/- 0.027 -0.033 +/- 0.025 10/14/09 0.021 +/- 0.056 2.210 + 0.460 0.011 +/- 0.029 -0.020 +/- 0.100 0.000 +/- 0.026 -0.016 +/- 0.030 Cr-51 Cs-134 Cs-1 37 Fe-59 1-131 K-40 05/26/09 -0.060 +/- 0.190 -0.007 +/- 0.020 - .004 +/- 0.026 0.018 +/- 0.072 0.009 +/- 0.020 3.700 +/- 0.990 06/17/09 -0.170 +/- 0.300 0.005 +/- 0.019 0.007 +/- 0.031 0.027 +/- 0.071 -0.009 +/- 0.003 2.830 +/- 0.750 07/15/09 0.150 +/- 0.250 0.020 +/- 0.021 -. 026 +/- 0.036 0.053 +/- 0.083 0.030 +/- 0.036 4.200 +/- 1.000 08/25/09 0.170 +/- 0.200 0.013 +/- 0.014 0.005 +/- 0.019 -0.026 +/- 0.042 -0.010 +/- 0.003 3.360 +/- 0.510 09/15/09 -0.250 +/- 0.220 0.006 +/- 0.020 0.003 +/- 0.025 0.037 +/- 0.058 0.021 +/- 0.031 2.710 +/- 0.620 10/14/09 0.000 +/- 0.210 0.010 +/- 0.019 0.008 + 0.027 0.028 +/- 0.062 -0.003 +/- 0.001 3.730 +/- 0.900 La-140 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 05/26/09 0.029 +/- 0.046 -0.006 +/- 0.030 0.002 +/- 0.021 0.005 +/- 0.023 -0.200 +/- 0.260 -0.040 +/- 0.066 06/17/09 -0.038 +/- 0.085 0.010 +/- 0.030 -0.009 +/- 0.035 0.004 +/- 0.031 -0.030 +/- 0.260 -0.008 +/- 0.064 07/15/09 0.008 +/- 0.083 0.006 +/- 0.031 -0.011 +/- 0.036 -0.019 +/- 0.031 0.240 +/- 0.300 0.000 +/- 0.063 08/25/09 -0.028 +/- 0.061 -0.006 +/- 0.018 -0.022 +/- 0.028 -0.001 +/- 0.023 -0.050 +/- 0.180 0.013 +/- 0.038 09/15/09 0.000 +/- 0.055 -0.007 +/- 0.026 0.010 +/- 0.028 -0.015 +/- 0.028 -0.160 +/- 0220 0.017 +/- 0.060 10/14/09 0.021 +/- 0.056 0.008 +/- 0.032 0.027 +/- 0.032 0.008 +/- 0.024 -0.150 +/- 0.270 0.085 +/- 0.065 Th-228 Zn-65 Zr-95 05/26/09 -0.010 +/- 0.100 -0.019 +/- 0.078 0.011 +/- 0.044 06/17/09 0.020 +/- 0.120 -0.057 +/- 0.059 0.007 +/- 0.052 07/15/09 0.110 +/- 0.110 0.004 +/- 0.051 0.037 +/- 0.059 08/25/09 0.085 +/- 0.075 -0.037 +/- 0.045 0.015 +/- 0.037 09/15/09 0.010 +/- 0.110 -0.058 +/- 0.061 0.007 +/- 0.044 10/14/09 0.060 +/- 0.110 -0.088 +/- 0.087 0.033 +/- 0.044 10 Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 05/26/09 0.000 +/- 0.024 G 0.670 +/- 0.340 -0.017 +/- 0.027 0.062 +/- 0.092 0.016 +/- 0.020 -0.039 +/- 0.033 06/17/09 0.027 +/- 0.078 0.480 +/- 0.310 -0.034 +/- 0.033 0.036 +/- 0.098 -0.002 +/- 0.022 -0.005 +/- 0.023 07/15/09 -0.030 +/- 0.053 0.500 +/- 0.360 -0.011 +/- 0.031 0.049 +/- 0.094 0.002 +/- 0.025 0.015 +/- 0.033 08/25/09 -0.038 +/- 0.060 0.680 +/- 0.320 -0.010 +/- 0.039 -0.010 +/- 0.120 -0.013 +/- 0.028 0.013 +/- 0.029 09/15/09 0.054 +/- 0.043 0.730 +/- 0.280 0.010 +/- 0.030 0.000 +/- 0.089 0.004 +/- 0.023 0.005 +/- 0.025 10/14/09 0.000 +/- 0.031 1.420 +/- 0.350 -0.010 +/- 0.024 -0.029 +/- 0.091 0.005 +/- 0.025 0.008 +/- 0.020 Cr-51 Cs-134 Cs-1 37 Fe-59 1-131 K-40 05/26/09 0.000 +/- 0.180 -0.001 +/- 0.020 0.020 +/- 0.026 -0.014 +/- 0.050 0.002 +/- 0.010 3.960 +/- 0.920 06/17/09 0.070 +/- 0.240 -0.009 +/- 0.019 0.006 +/- 0.024 0.031 +/- 0.050 -0.008 +/- 0.003 4.070 +/- 0.710 07/15/09 -0.130 +/- 0.230 0.008 +/- 0.015 0.012 +/- 0.029 -0.007 +/- 0.066 0.011 +/- 0.024 3.630 +/- 0.810 08/25/09 0.030 +/- 0.230 -0.011 +/- 0.020 -0.002 +/- 0.026 -0.005 +/- 0.061 -0.012 +/- 0.004 3.050 +/- 0.760 09/15/09 0.040 +/- 0.180 0.019 +/- 0.016 0.013 +/- 0.022 0.002 +/- 0.045 0.014 +/- 0.030 3.190 +/- 0.640 10/14/09 -0.100 +/- 0.190 -0.006 +/- 0.015 0.007 +/- 0.023 0.005 +/- 0.047 -0.003 +/- 0.001 3.320 +/- 0.710
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 13, Broadleaf Vegetation (pCi/g Wet)
Location Collection Isotope Date 10 La-140 Mn-54 Nb-95 Ru-1 03 Ru-106 Sb-125 05/26/09 0.000 +/- 0.024 0.009 +/- 0.024 0.006 +/- 0.031 0.007 +/- 0.021 -0.310 +/- 0.250 0.015 +/- 0.060 06/17/09 0.027 +/- 0.078 0.007 +/- 0.021 -0.007 +/- 0.029 0.005 +/- 0.026 0.000 +/- 0.210 0.017 +/- 0.061 07/15/09 -0.030 +/- 0.053 0.003 +/- 0.023 -0.004 +/- 0.024 0.015 +/- 0.029 0.160 +/- 0.190 -0.009 +/- 0.057 08/25/09 -0.038 +/- 0.060 -0.005 +/- 0.029 0.016 +/- 0.030 -0.016 +/- 0.028 0.000 +/- 0.200 0.032 +/- 0.060 09/15/09 0.054 +/- 0.043 0.005 +/- 0.020 0.000 +/- 0.025 0.014 +/- 0.021 0.090 +/- 0.180 -0.002 +/- 0.055 10/14/09 0.000 +/- 0.031 -0.001 +/- 0.020 -0.002 +/- 0.023 0.003 +/- 0.019 0.060 +/- 0.200 -0.041 +/- 0.049 Th-228 Zn-65 Zr-95 05/26/09 0.014 +/- 0.076 -0.065 +/- 0.073 0.011 +/- 0.043 06/17/09 -0.011 +/- 0.091 -0.042 +/- 0.058 -0.017 +/- 0.048 07/15/09 0.033 +/- 0.086 -0.012 +/- 0.049 -0.027 +/- 0.038 08/25/09 0.100 +/- 0.120 0.030 +/- 0.071 0.009 +/- 0.032 09/15/09 0.028 +/- 0.067 -0.004 +/- 0.051 -0.006 + 0.033 10/14/09 0.013 +/- 0.086 0.011 +/- 0.053 0.013 +/- 0.034 17 Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 05/26/09 0.053 +/- 0.048 G 0.420 +/- 0.280 0.021 +/- 0.031 0.063 +/- 0.092 0.003 +/- 0.023 -0.013 +/- 0.039 06/17/09 -0.013 +/- 0.076 0.370 +/- 0.310 -0.018 +/- 0.047 0.040 +/- 0.120 -0.011 +/- 0.027 -0.017 +/- 0.029 07/15/09 -0.082 +/- 0.094 1.040 +/- 0.430 -0.006 +/- 0.040 -0.040 +/- 0.100 0.012 +/- 0.034 -0.004 +/- 0.040 08/25/09 0.020 +/- 0.084 1.290 +/- 0.470 0.020 + 0.038 -0.060 +/- 0.110 0.019 +/- 0.034 0.009 +/- 0.035 09/15/09 -0.065 +/- 0.069 2.160 +/- 0.480 -0.018 +/- 0.042 -0.010 +/- 0.140 -0.035 +/- 0.033 0.006 +/- 0.031 10/14/09 -0.014 +/- 0.044 2.020 +/- 0.380 -0.010 +/- 0.030 0.050 +/- 0.110 0.000 +/- 0.027 0.005 +/- 0.022 Cr-51 Cs-134 Cs-137 Fe-59 1-131 K-40 05/26/09 -0.050 +/- 0.190 0.000 +/- 0.020 0.003 +/- 0.026 -0.033 +/- 0.068 0.003 +/- 0.010 4.440 +/- 0.980 06/17/09 -0.110 +/- 0.320 0.003 +/- 0.022 0.007 +/- 0.025 0.031 +/- 0.080 0.006 +/- 0.023 3.080 +/- 0.780 07/15/09 0.050 +/- 0.260 -0.002 +/- 0.022 0.022 +/- 0.032 -0.019 +/- 0.080 -0.006 +/- 0.002 3.650 +/- 0.880 08/25/09 0.180 +/- 0.250 -0.013 +/- 0.024 0.035 +/- 0.032 -0.047 +/- 0.086 0.028 +/- 0.032 3.080 +/- 0.860 09/15/09 0.130 +/- 0.270 -0.025 +/- 0.022 0.002 +/- 0.030 -0.016 +/- 0.074 0.002 +/- 0.016 3.660 +/- 0.780 10/14/09 0.050 +/- 0.200 0.001 +/- 0.018 0.046 +/- 0.033 0.017 +/- 0.055 0.004 +/- 0.016 2.530 +/- 0.620 La-140 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 05/26/09 0.053 +/- 0.048 0.000 +/- 0.026 0.014 +/- 0.030 -0.012 +/- 0.023 0.050 +/- 0.240 0.030 +/- 0.053 06/17/09 -0.013 +/- 0.076 -0.014 +/- 0.027 0.032 +/- 0.040 -0.004 +/- 0.036 -0.100 +/- 0.290 0.023 +/- 0.065 07/15/09 -0.082 +/- 0.094 -0.014 +/- 0.031 0.004 +/- 0.033 0.010 +/- 0.032 0.060 +/- 0.260 -0.034 +/- 0.073 08/25/09 0.020 +/- 0.084 0.006 +/- 0.034 -0.008 +/- 0.036 -0.010 +/- 0.036 0.020 +/- 0.260 0.056 +/- 0.063 09/15/09 -0.065 +/- 0.069 -0.025 +/- 0.028 0.003 +/- 0.032 -0.008 +/- 0.034 0.130 +/- 0.240 0.034 +/- 0.068 10/14/09 -0.014 +/- 0.044 -0.009 +/- 0.021 -0.004 +/- 0.027 -0.006 +/- 0.023 -0.010 +/- 0.210 -0.010 +/- 0.060 Th-228 Zn-65 Zr-95 05/26/09 0.060 +/- 0.100 -0.049 +/- 0.073 0.022 +/- 0.047 06/17/09 0.020 +/- 0.120 -0.025 +/- 0.073 -0.014 + 0.053 07/15/09 0.100 +/- 0.130 0.029 +/- 0.070 0.035 +/- 0.055 08/25/09 0.210 +/- 0.130 -0.023 +/- 0.090 -0.014 +/- 0.060 09/15/09 0.190 +/- 0.150 0.000 +/- 0.078 0.017 + 0.054 10/14/09 0.096 +/- 0.096 0.035 +/- 0.096 -0.040 + 0.039
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 14, Sea Water (pCi/L)
Location Collection Isotope Date 32 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-1 34 01/27/09 1.4 +/- 6.7 H 35.0+/- 33.0 -4.4+/- 4.0 -1.1 +/- 3.8 0.0 +/- 36.0 4.0+/- 3.2 02/24/09 3.9 +/- 7.8 -7.0 +/- 38.0 -1.6+/- 4.4 -2.6 +/- 5.3 -29.0 +/- 38.0 0.8+/- 3.5 03/31/09 2.1 +/- 7.1 -15.0 +/- 26.0 -0.7+/- 2.7 -1.1 +/- 3.2 27.0 +/- 29.0 -1.0 +/- 2.2 04/28/09 0.5 +/- 5.8 0.0 + 25.0 0.8 +/- 3.2 0.3+/- 3.7 -15.0 +/- 26.0 1.4+/- 2.8 05/26/09 2.1 +/- 7.9 -1.0 +/- 33.0 -0.3+/- 4.0 0.4+/- 4.3 8.0 +/- 31.0 -2.1 +/- 3.0 06/30/09 2.2 +/- 7.0 11.0+/- 29.0 -2.8+/- 4.1 3.3+/- 4.0 -22.0 +/- 33.0 -3.2 +/- 3.0 07/28/09 -0.4 +/- 3.4 3.0 +/- 11.0 0.7 +/- 1.2 0.9+/- 1.2 4.0 +/- 13.0 -0.7 +/- 0.9 08/25/09 0.6 +/- 5.9 -1.0 +/- 26.0 0.8 +/- 3.9 -0.5 +/- 3.4 5.0 +/- 28.0 0.5+/- 2.1 09/29/09 -5.4 +/- 6.7 -24.0 +/- 28.0 -3.4+/- 3.3 -2.6 +/- 3.9 12.0 + 32.0 -0.4 +/- 2.5 10/27/09 2.5 +/- 7.9 -11.0 +/- 32.0 0.8 +/- 3.5 -1.7 +/- 3.9 -16.0 +/- 34.0 -2.9 +/- 3.0 11/24/09 3.3 +/- 6.3 -2.0 +/- 23.0 0.2 +/- 2.3 2.4+/- 2.5 1.0 +/- 23.0 3.2+/- 2.6 12/29/09 3.7 +/- 7.1 31.0+/- 36.0 -2.7+/- 3.7 2.7+/- 4.4 4.0 +/- 39.0 -2.4 +/- 2.9 Cs-1 37 Fe-59 H-3 1-131 K-40 La-140 01/27/09 2.5 +/- 3.6 -0.6 +/- 7.3 60.0 +/- 180.0 4.3+/- 7.6 299.0 +/- 82.0 1.4+/- 6.7 02/24/09 -4.7 +/- 4.5 -3.7 +/- 9.7 410.0 +/- 180.0 1.9+/- 7.8 236.0 +/- 99.0 3.9+/- 7.8 03/31/09 0.0 +/- 3.0 1.9+/- 6.6 80.0 +/- 160.0 0.7+/- 7.8 274.0 +/- 66.0 2.1+/- 7.1 04/28/09 -2.6 +/- 3.1 -5.7 +/- 6.6 100.0 +/- 170.0 2.2+/- 5.9 265.0 +/- 69.0 0.5+/- 5.8 05/26/09 0.0 +/- 3.9 4.9+/- 7.8 -120.0+/- 180.0 0.3+/- 6.6 301.0 +/- 86.0 2.1+/- 7.9 06/30/09 -0.6 +/- 3.5 -4.8 +/- 8.0 -100.0+/- 180.0 -6.7 +/- 7.7 342.0 +/- 92.0 2.2+/- 7.0 07/28/09 -0.3 +/- 1.1 -2.0 +/- 2.8 1910.0 +/- 180.0 1.0+/- 4.7 263.0 +/- 28.0 -0.4 +/- 3.4 08/25/09 2.8 +/- 3.9 2.2+/- 7.2 210.0 +/- 180.0 -1.8 +/- 6.0 277.0 +/- 78.0 0.6+/- 5.9 09/29/09 1.2 +/- 3.2 2.9+/- 7.2 120.0 +/- 180.0 -0.3 +/- 7.2 362.0 +/- 78.0 -5.4 +/- 6.7 10/27/09 1.3 +/- 3.4 -2.2 +/- 8.2 100.0 +/- 150.0 8.0+/- 8.2 267.0 +/- 79.0 2.5+/- 7.9 11124/09 0.8 +/- 2.4 2.2+/- 5.0 570.0 +/- 150.0 -2.5 +/- 7.2 285.0 +/- 49.0 3.3+/- 6.3 12/29/09 0.2 +/- 4.3 0.4+/- 8.4 500.0 +/- 150.0 4.1+/- 7.7 265.0 +/- 91.0 3.7+/- 7.1
, Mn-54 Nb-95 Ru-1 03 Ru-106 Sb-125 Th-228 01/27/09 1.3 + 3.8 -3.6 +/- 4.4 2.8 +/- 4.0 -13.0 +/- 33.0 -10.0 + 10.0 -2.0 +/- 15.0 02/24/09 -1.9 + 4.2 1.2+/- 4.6 1.3 +/- 5.0 -18.0 +/- 36.0 -3.0 +/- 14.0 2.0 +/- 18.0 03/31/09 0.2 +/- 2.6 -1.1 +/- 3.8 -2.9+/- 3.5 -12.0 +/- 28.0 -3.7 +/- 8.0 2.0 +/- 13.0 04/28/09 -1.3 +/- 3.2 -0.2 +/- 3.4 -1.2+/- 3.4 7.0 +/- 28.0 0.4 +/-18.0 9.0 +/- 14.0 05/26/09 2.1 +/- 3.6 -3.7 +/- 4.3 -0.9+/- 3.9 28.0+/- 35.0 4.0 + 11.0 -1.0 +/- 15.0 06/30/09 2.9 +/- 3.7 0.8+/- 4.3 -0.3+/- 4.0 11.0+/- 34.0 -5.3 + 9.5 9.0 +/- 17.0 07/28/09 -0.5 +/- 1.2 1.0+/- 2.2 -3.2+/- 1.5 -8.0 +/- 11.0 -1.6 +/- 2.8 0.4+/- 4.9 08/25/09 -0.8 +/- 3.5 0.1+/- 4.4 -2.5+/- 3.5 14.0+/- 28.0 1.6 +/- 9.6 5.0 +/- 15.0 09/29/09 -0.2 +/- 3.0 5.1+/- 4.4 0.0 +/- 4.1 -1.0 +/- 31.0 0.0 +/- 8.5 10.0+/- 12.0 10/27/09 2.4 +/- 3.4 2.0+/- 3.8 -2.9+/- 3.6 -9.0 +/- 28.0 7.7 + 9.2 8.0 +/- 13.0 11/24/09 0.9 +/- 2.3 2.5+/- 3.2 -1.1+/- 2.8 -11.0 + 19.0 -2.6 + 6.1 5.3+/- 5.0 12/29/09 -1.3 +/- 4.8 4.1+/- 4.5 -2.3+/- 4.7 2.0 +/- 42.0 0.0 +/- 10.0 5.0 +/- 15.0 Zn-65 Zr-95 01/27/09 -12.0 +/- 11.0 0.9+/- 6.2 02/24/09 -6.0 +/- 11.0 2.6+/- 7.4 03/31/09 -4.2 +/- 7.5 -2.2 +/- 5.1 04/28/09 -5.8 +/- 7.5 -0.1 +/- 5.5 05/26/09 -1.3 + 8.1 -2.6 +/- 6.7 06/30/09 -2.7 +/- 7.8 -1.0 +/- 7.2 07/28/09 -1.4 + 2.8 -0.4 +/- 2.3 08/25/09 -1.1 + 7.4 1.8+/- 6.6 09/29/09 -1.0 + 12.0 1.0+/- 5.4 10/27/09 0.8 +/- 8.5 2.7+/- 7.6 11/24/09 -0.6 +/- 6.7 2.3+/- 4.2 12/29/09 -6.0 +/-110.0 2.3+/- 8.1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 14, Sea Water (pCi/L)
Location Collection Isotope Date 37-C Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-1 34 03/24/09 0.5+/- 5.7 -14.0+/- 27.0 -1.1+/- 3.2 -0.2+/- 3.3 -27.0 +/- 27.0 1.4 +/- 3.3 06/09/09 0.0 +/- 6.4 -4.0 +/- 19.0 -0.7+/- 2.5 -0.7+/- 2.4 -3.0 +/- 23.0 0.1 +/- 1.9 09/01/09 2.7 +/- 7.3 -6.0 +/- 28.0 0.3 +/- 4.0 0.6 +/- 3.4 4.0 +/- 31.0 -1.9 +/- 2.6 12/01/09 1.0 +/- 6.2 -4.0 +/- 30.0 -1.4+/- 3.5 -2.2+/- 3.3 6.0 +/- 33.0 1.0 +/- 2.9 Cs-1 37 Fe-59 H-3 1-131 K-40 La-140 03/24/09 2.2+/- 3.3 -3.5+/- 6.6 -230.0+/- 170.0 -2.8+/- 6.5 289.0 +/- 72.0 0.5 +/- 5.7 06/09/09 -0.3 +/- 2.4 2.5 +/- 5.6 -200.0+/- 170.0 -0.5+/- 8.4 245.0 +/- 49.0 0.0 +/- 6.4 09/01/09 0.9+/- 3.9 6.1 +/- 7.9 -50.0 +/- 160.0 -2.0+/- 6.0 302.0 +/- 84.0 2.7 +/- 7.3 12/01/09 -0.2 +/- 3.7 -6.3+/- 7.0 -60.0 +/- 150.0 2.2 +/- 7.3 278.0 +/- 70.0 1.0 +/- 6.2 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Th-228 03/24/09 0.2+/- 2.9 -3.3+/- 3.9 -1.5+/- 3.3 9.0 +/- 33.0 0.7 +/- 8.4 0.0 +/- 13.0 06/09/09 -0.9 +/- 2.3 -2.5+/- 2.9 -2.0+/- 2.7 -11.0+/- 21.0 -1.7 +/- 5.9 -0.2 +/- 9.7 09/01/09 -3.0 +/- 3.6 -2.8+/- 4.2 -4.9+/- 4.0 -11.0+/- 32.0 4.0 +/- 9.0 -5.0 +/- 13.0 12/01/09 -3.1 +/- 2.9 -3.9+/- 3.5 -5.7+/- 4.3 2.0 +/- 34.0 5.8 + 9.6 0.0 +/- 12.0 Zn-65 Zr-95 03/24/09 11.0+/- 13.0 -6.2+/- 5.6 06/09/09 -1.5 +/- 4.8 -0.7+/- 4.4 09/01/09 -2.8 +/- 8.1 -2.4+/- 6.0 12/01/09 -1.3 +/- 7.9 1.6 +/- 6.1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 15, Bottom Sediment (pCi/g Dry)
Location Collection Isotope Date 29-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 04/28/09 0.005 + 0.025 -0.070 +/- 0.310 -0.008 +/- 0.035 0.038 +/- 0.030 0.150 +/- 0.370 -0.015 +/- 0.041 10/21/09 0.115 +/- 0.098 0.240 + 0.600 0.025 +/- 0.064 0.022 +/- 0.084 -0.350 +/- 0.730 0.015 +/- 0.054 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/28/09 -0.010 +/- 0.034 0.001 +/- 0.081 -0.030 +/- 0.110 16.000 +/- 1.300 -0.022 +/- 0.032 0.032 +/- 0.049 10/21/09 0.060 +/- 0.067 0.070 +/- 0.190 0.060 +/- 0.310 20.100 +/- 3.100 -0.005 +/- 0.069 0.055 +/- 0.098 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/28/09 -0.002 +/- 0.039 0.050 +/- 0.300 0.027 +/- 0.083 1.050 +/- 0.150 -0.020 +/- 0.160 0.010 +/- 0.066 10/21/09 -0.024 +/- 0.085 -0.050 +/- 0.170 1.130 +/- 0.340 -0.260 +/- 0.200 0.050 +/- 0.140
-0.460 +/- 0.660 31 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 04/28/09 -0.018 +/- 0.021 0.100 +/- 0.310 0.010 +/- 0.027 -0.007 +/- 0.021 0.010 +/- 0.320 -0.021 +/- 0.037 11/24/09 -0.011 +/- 0.060 0.170 +/- 0.380 -0.018 +/- 0.039 -0.036 +/- 0.040 -0.320 +/- 0.480 0.002 +/- 0.025 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/28/09 0.003 +/- 0.030 -0.001 +/- 0.052 -0.040 +/- 0.120 16.130 +/- 0.890 -0.006 +/- 0.028 -0.004 +/- 0.038 11/24/09 -0.003 +/- 0.039 -0.110 +/- 0.120 0.110 +/- 0.200 16.800 +/- 1.900 -0.016 +/- 0.043 -0.027 +/- 0.057 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/28/09 -0.024 +/- 0.035 0.180 +/- 0.260 -0.087 +/- 0.076 2.710 +/- 0.130 0.040 +/- 0.100 0.012 +/- 0.059 11/24/09 0.016 +/- 0.043 0.050 +/- 0.310 0.025 +/- 0.096 -0.040 +/- 0.330 -0.110 +/- 0.100 0.000 +/- 0.072 32 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 04/28/09 0.009 +/- 0.052 -0.110 +/- 0.480 0.001 +/- 0.064 0.037 +/- 0.076 0.500 +/- 0.620 0.016 +/- 0.050 10/21/09 -0.009 +/- 0.087 0.720 +/- 0.720 -0.062 +/- 0.060 -0.016 +/- 0.059 0.210 +/- 0.700 0.010 +/- 0.046 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/28/09 0.041 +/- 0.069 0.060 +/- 0.130 0.070 +/- 0.210 12.600 +/- 2.400 0.002 +/- 0.061 -0.012 +/- 0.081 10/21/09 0.016 +/- 0.059 -0.060 +/- 0.170 0.090 +/- 0.310 14.200 +/- 2.200 -0.018 +/- 0.055 0.070 +/- 0.100 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/28/09 0.014 +/- 0.082 -0.500 +/- 0.630 0.000 +/- 0.180 0.980 +/- 0.330 -0.130 +/- 0.190 0.020 +/- 0.120 10/21/09 0.014 +/- 0.072 -0.070 +/- 0.450 0.190 +/- 0.180 0.950 +/- 0.280 -0.180 +/- 0.180 0.110 +/- 0.100 33 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 04/28/09 0.013 +/- 0.018 0.130 +/- 0.230 -0.008 +/- 0.030 -0.023 +/- 0.029 0.000 +/- 0.320 -0.014 +/- 0.026 11/24/09 0.075 +/- 0.065 0.100 +/- 0.420 0.047 +/- 0.074 0.027 + 0.054 -0.480 +/- 0.520 -0.020 +/- 0.035 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/28/09 -0.015 +/- 0.025 -0.064 +/- 0.068 0.019 +/- 0.090 14.100 +/- 1.400 0.007 +/- 0.027 -0.005 +/- 0.040 11/24/09 -0.013 +/- 0.047 -0.100 +/- 0.170 -0.070 +/- 0.210 15.400 +/- 2.400 0.006 +/- 0.059 0.033 +/- 0.065
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 15, Bottom Sediment (pCi/g Dry)
Location Collection Isotope Date 33 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/28/09 0.011 +/- 0.032 -0.070 +/- 0.230 -0.042 +/- 0.061 0.180 +/- 0.150 -0.090 +/- 0.080 0.010 +/- 0.055 11/24/09 0.013 +/- 0.065 -0.090 +/- 0.520 -0.010 +/- 0.100 0.260 +/- 0.250 -0.120 +/- 0.160 0.040 +/- 0.110 34 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 0.270 +/- 0.280 -0.008 +/- 0.027 -0.010 +/- 0.043 0.020 +/- 0.400 0.016 +/- 0.031 04/28/09 0.003 +/- 0.025 11/24/09 0.020 +/- 0.070 -0.380 +/- 0.360 -0.004 +/- 0.039 -0.033 +/- 0.043 0.060 +/- 0.370 -0.034 +/- 0.031 Cs-137 Fe-59 1-131 K-40 Nb-95 Mn-54 04/28/09 0.031 +/- 0.036 -0.030 +/- 0.095 -0.020 +/- 0.100 15.900 1.900 -0.015 +/- 0.035 -0.001 +/- 0.045 11/24/09 -0.030 + 0.058 0.000 +/- 0.140 -0.040 +/- 0.270 9.500 +/- 2.000 0.004 +/- 0.041 0.023 +/- 0.051 Ru-103 Ru-106 Sb-1 25 Th-228 Zn-65 Zr-95 04/28/09 0.003 +/- 0.033 0.180 +/- 0.270 -0.029 +/- 0.080 0.080 +/- 0.170 -0.028 +/- 0.096 0.069 +/- 0.062 11/24/09 0.007 +/- 0.056 -0.420 +/- 0.460 0.070 +/- 0.100 0.120 +/- 0.190 0.030 +/- 0.120 0.009 +/- 0.083 35-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134
-0.120 +/- 0.460 04/28/09 -0.010 +/- 0.043 -0.008 +/- 0.054 -0.014 +/- 0.055 -0.190 +/- 0.560 0.010 +/- 0.052 10/21/09 -0.017 +/- 0.043 -0.170 +/- 0.370 -0.012 +/- 0.042 -0.036 +/- 0.046 0.220 +/- 0.430 0.048 +/- 0.040 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/28/09 0.034 +/- 0.069 -0.090 +/- 0.140 -0.100 +/- 0.160 13.000 +/- 2.100 0.003 +/- 0.049 -0.044 +/- 0.082 10/21/09 -0.013 +/- 0.043 -0.010 +/- 0.120 -0.050 +/- 0.220 14.400 +/- 1:400 0.017 +/- 0.041 -0.005 +/- 0.086 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/28/09 0.015 +/- 0.066 0.130 +/- 0.510 0.090 +/- 0.140 0.700 +/- 0.310 -0.150 +/- 0.140 -0.113 +/- 0.091 10/21/09 0.028 +/- 0.050 -0.020 +/- 0.360 0.066 +/- 0.089 0.960 +/- 0.160 0.160 + 0.190 0.012 +/- 0.075 37-C Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 04/28/09 -0.015 + 0.040 0.200 +/- 0.470 -0.003 +/- 0.043 -0.002 +/- 0.041 0.000 +/- 0.540 -0.019 +/- 0.037 11/24/09 0.012 +/- 0.055 0.010 +/- 0.360 -0.030 +/- 0.044 -0.022 +/- 0.045 -0.270 +/- 0.460 0.011 +/- 0.028 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/28/09 0.045 +/- 0.065 -0.040 +/- 0.120 -0.140 +/- 0.160 12.800 +/- 2.300 -0.045 +/- 0.050 0.012 +/- 0.074 11/24/09 -0.019 + 0.032 -0.016 +/- 0.079 -0.120 +/- 0.220 15.500 +/- 1.900 -0.004 +/- 0.033 0.026 +/- 0.059 Ru-103 Ru-1 06 Sb-125 Th-228 Zn-65 Zr-95 04/28/09 0.046 +/- 0.060 0.280 +/- 0.500 -0.095 +/- 0.090 0.330 +/- 0.230 0.050 +/- 0.110 0.025 +/- 0.096 11/24/09 0.009 +/- 0.042 0.040 +/- 0.280 -0.100 +/- 0.110 0.150 +/- 0.160 -0.050 +/- 0.082 0.026 +/- 0.063
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 15, Bottom Sediment (pCi/g Dry)
Location Collection Isotope Date 39-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 04/28/09 0.012 +/- 0.065 0.250 +/- 0.660 -0.014 +/- 0.067 0.026 +/- 0.075 0.150 +/- 0.790 0.068 +/- 0.058 10/22/09 -0.028 +/- 0.082 0.340 +/- 0.470 -0.029 +/- 0.069 0.048 +/- 0.058 -0.890 +/- 0.520 0.028 +/- 0.049 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/28/09 0.071 +/- 0.093 0.100 +/- 0.170 -0.150 +/- 0.210 16.400 +/- 2.400 -0.019 +/- 0.053 0.031 +/- 0.083 10/22/09 0.012 +/- 0.069 -0.020 +/- 0.130 -0.100 +/- 0.250 17.500 +/- 2.600 0.009 +/- 0.057 -0.013 +/- 0.072 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/28/09 0.02P +/- 0.078 0.220 +/- 0.610 -0.040 +/- 0.160 0.860 +/- 0.340 -0.090 +/- 0.170 0.062 +/- 0.096 10/22/09 0.001 +/- 0.067 -0.050 +/- 0.560 0.030 +/- 0.120 0.430 +/- 0.250 -0.100 +/- 0.160 -0.070 +/- 0.110 67-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 04/28/09 -0.015 + 0.049 0.360 +/- 0.410 0.010 +/- 0.044 -0.069 +/- 0.054 -0.570 +/- 0.540 -0.011 +/- 0.042 11/30/09 0.000 +/- 0.080 0.250 +/- 0.610 0.025 +/- 0.064 -0.025 +/- 0.079 0.360 +/- 0.590 -0.003 +/- 0.046 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/28/09 0.153 +/- 0.072 -0.110 +/- 0.120 -0.010 +/- 0.160 15.200 +/- 2.000 -0.038 +/- 0.050 -0.017 +/- 0.071 11/30/09 0.130 +/- 0.091 -0.020 +/- 0.180 -0.110 +/- 0.180 15.500 +/- 2.900 0.009 +/- 0.063 -0.028 +/- 0.085 Ru-1 03 Ru-1 06 Sb-125 Th-228 Zn-65 Zr-95 04/28/09 -0.030 +/- 0.051 -0.470 +/- 0.450 0.020 +/- 0.120 0.580 +/- 0.210 -0.050 +/- 0.120 -0.109 +/- 0.085 11/30/09 -0.073 +/- 0.059 0.140 +/- 0.570 -0.120 +/- 0.160 -0.420 +/- 0.590 -0.190 +/- 0.210 0.080 +/- 0.130 69-X Ag- 10m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 04/28/09 0.008 +/- 0.029 0.240 +/- 0.290 -0.021 +/- 0.029 0.021 +/- 0.033 -0.080 +/- 0.290 0.021 +/- 0.045 11/24/09 0.007 +/- 0.054 0.110 +/- 0.460 0.016 +/- 0.057 0.030 +/- 0.031 -0.040 +/- 0.480 0.003 +/- 0.025 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/28/09 0.047 +/- 0.038 -0.008 +/- 0.089 -0.076 +/- 0.088 16.100 +/- 1.600 0.002 +/- 0.026 0.009 +/- 0.042 11/24/09 0.005 +/- 0.035 0.060 +/- 0.140 -0.040 +/- 0.220 15.200 +/- 1.900 -0.005 +/- 0.037 0.019 +/- 0.052 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/28/09 -0.013 +/- 0.030 0.140 +/- 0.250 0.038 +/- 0.079 0.070 +/- 0.140 -0.056 +/- 0.086 -0.009 +/- 0.056 11/24/09 0.000 +/- 0.056 -0.160 +/- 0.340 0.056 +/- 0.093 0.250 +/- 0.160 -0.100 +/- 0.120 0.009 +/- 0.076
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 16, Aquatic Flora - Fucus (pCi/g Wet)
Location Collection Isotope Date 29 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 02/16/09 -0.026 + 0.033 -0.100 +/- 0.220 -0.011 +/- 0.026 -0.003 +/- 0.029 0.070 +/- 0.220 0.002 +/- 0.020 04/29/09 0.013 + 0.035 0.140 +/- 0.190 -0.006 +/- 0.025 -0.005 +/- 0.029 -0.190 +/- 0.200 0.004 +/- 0.019 09/02/09 -0.033 + 0.035 0.000 +/- 0.180 0.004 +/- 0.028 0.005 +/- 0.028 0.080 +/- 0.190 0.006 +/- 0.020 11/23/09 0.000 + 0.031 0.130 +/- 0.240 0.002 +/- 0.023 -0.002 +/- 0.025 -0.020 +/- 0.230 0.002 +/- 0.022 Cs-1 37 Fe-59 1-131 K-40 Mn-54 Nb-95 02/16/09 -0.007 + 0.025 0.011 +/- 0.058 -0.013 +/- 0.042 5.740 +/- 0.860 -0.002 +/- 0.028 -0.007 +/- 0.034 04/29/09 0.009 +/- 0.020 0.077 +/- 0.064 0.030 + 0.043 6.020 +/- 0.860 0.018 +/- 0.025 -0.011 +/- 0.028 09/02/09 -0.015 +/- 0.027 -0.025 +/- 0.059 -0.006 +/- 0.039 7.800 +/- 1.900 0.009 +/- 0.022 0.023 +/- 0.032 11/23/09 -0.016 +/- 0.023 -0.038 +/- 0.058 0.004 +/- 0.087 7.120 +/- 0. 50 0.017 +/- 0.025 0.008 +/- 0.030 Ru-1 03 Ru-106 Sb-125 Th-224 Zn-65 Zr-95 02/16/09 -0.003 +/- 0.029 0.270 +/- 0.250 -0.050 +/- 0.060 0.040 +/- 0.120 -0.065 +/- 0.067 -0.004 +/- 0.050 04/29/09 0.001 +/- 0.029 0.040 +/- 0.220 0.025 +/- 0.066 -0.030 +/- 0.110 0.011 +/- 0.066 -0.020 +/- 0.047 09/02/09 0.001 +/- 0.026 0.020 +/- 0.230 0.030 +/- 0.064 0.110 +/- 0.110 0.004 +/- 0.062 0.003 +/- 0.044 11/23/09 0.012 + 0.026 0.200 +/- 0.220 0.029 +/- 0.061 0.075 +/- 0.087 -0.024 +/- 0.067 0.009 +/- 0.052 32-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 02/16/09 -0.009 + 0.034 0.080 +/- 0.180 0.008 +/- 0.028 0.006 +/- 0.021 -0.040 +/- 0.170 0.017 +/- 0.023 04/29/09 0.002 +/- 0.042 0.140 +/- 0.210 -0.017 +/- 0.026 0.000 +/- 0.027 0.110 +/- 0.210 -0.004 +/- 0.019 09/02/09 -0.013 + 0.030 0.070 +/- 0.200 -0.002 +/- 0.025 0.000 +/- 0.027 0.040 +/- 0.180 -0.018 +/- 0.021 11/23/09 0.007 +/- 0.040 0.140 +/- 0.300 -0.021 +/- 0.037 -0.011 +/- 0.029 -0.060 +/- 0.310 0.019 +/- 0.024 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 02/16/09 -0.015 + 0.027 -0.044 +/- 0.066 -0.005 +/- 0.041 6.320 +/- 0.940 0.000 +/- 0.029 -0.007 +/- 0.029 04/29/09 0.007 +/- 0.025 0.009 +/- 0.054 0.005 +/- 0.049 6.120 +/- 0.900 -0.015 +/- 0.027 0.000 +/- 0.032 09/02/09 -0.014 + 0.025 0.018 +/- 0.055 0.009 +/- 0.037 7.460 +/- 0.930 0.000 +/- 0.027 -0.035 +/- 0.029 11/23/09 0.011 + 0.039 0.059 +/- 0.083 0.040 +/- 0.130 8.300 +/- 1.200 0.013 +/- 0.032 0.011 +/- 0.045 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/16/09 -0.005 +/- 0.025 -0.050 +/- 0.240 0.015 +/- 0.047 -0.020 +/- 0.110 0.010 +/- 0.064 -0.005 +/- 0.047 04/29/09 -0.009 +/- 0.026 -0.090 +/- 0.260 0.046 +/- 0.065 0.030 +/- 0.110 0.050 +/- 0.061 0.026 +/- 0.054 09/02/09 0.008 +/- 0.025 -0.070 +/- 0.220 -0.021 +/- 0.065 0.090 +/- 0.110 -0.057 +/- 0.053 -0.009 +/- 0.047 11/23/09 -0.010 +/- 0.037 0.020 +/- 0.290 -0.083 +/- 0.085 0.140 +/- 0.130 -0.047 +/- 0.088 0.074 +/- 0.065 33-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 02/17/09 -0.030 +/- 0.037 -0.020 +/- 0.170 -0.036 +/- 0.021 0.004 +/- 0.024 -0.120 +/- 0.190 -0.021 +/- 0.019 04/28/09 -0.017 +/- 0.035 -0.010 +/- 0.180 0.014 +/- 0.033 0.006 +/- 0.031 -0.160 +/- 0.190 -0.011 +/- 0.018 08/31/09 0.016 +/- 0.040 -0.040 +/- 0.240 -0.024 +/- 0.033 0.014 +/- 0.029 0.250 +/- 0.230 -0.002 +/- 0.021 11/24/09 0.015 +/- 0.040 0.100 +/- 0.250 -0.006 +/- 0.034 -0.030 +/- 0.032 0.260 +/- 0.230 -0.004 +/- 0.023 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 02/17/09 0.014 +/- 0.025 0.005 +/- 0.049 0.026 +/- 0.041 5.870 +/- 0.800 0.009 +/- 0.023 0.008 +/- 0.026 04/28/09 -0.038 +/- 0.028 -0.028 +/- 0.065 -0.035 +/-0.046 7.100 +/- 1.000 -0.006 +/- 0.026 0.002 +/- 0.029 08/31/09 -0.014 +/- 0.035 0.034 +/- 0.071 0.006 +/- 0.053 7.000 +/- 1.100 0.015 +/- 0.029 -0.017 +/- 0.033 11/24/09 0.005 +/- 0.030 0.095 +/- 0.095 -0.033 +/- 0.081 6.500 +/- 1.100 -0.002 +/- 0.033 0.005 +/- 0.043 3-55
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 16, Aquatic Flora - Fucus (pCi/g Wet)
Location Collection Isotope Date 33-X Ru-1 03 Ru-1 06 Sb-125 Th-228 Zn-65 Zr-95 02/17/09 0.006 + 0.023 0.330 +/- 0.240 -0.007 +/- 0.061 0.100 +/- 0.110 0.026 +/- 0.059 -0.006 +/- 0.038 04/28/09 -0.008 + 0.024 -0.130 +/- 0.230 0.024 _ 0.059 0.060 +/- 0.110 -0.028 +/- 0.067 -0.012 +/- 0.045 08/31/09 -0.011 + 0.025 -0.080 +/- 0.250 -0.063 +/- 0.068 0.010 +/- 0.120 -0.028 +/- 0.071 0.005 +/- 0.051 11/24/09 -0.002 +/- 0.028 -0.050 +/- 0.240 -0.079 +/- 0.068 0.100 +/- 0.110 -0.135 +/- 0.091 -0.005 +/- 0.057 35-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 02/16/09 0.016 +/- 0.033 0.100 +/- 0.250 0.013 +/- 0.024 0.012 +/- 0.024 -0.140 +/- 0.230 0.006 +/- 0.017 04/29/09 -0.014 +/- 0.033 0.190 +/- 0.190 -0.012 +/- 0.025 -0.007 +/- 0.027 -0.020 +/- 0.180 -0.018 +/- 0.019 09/14/09 0.011 + 0.038 0.100 +/- 0.260 0.022 +/- 0.030 -0.009 +/- 0.029 0.110 +/- 0.270 0.016 +/- 0.020 11/24/ 9 0.026 +/- 0.046 0.070 +/- 0.310 -0.015 +/- 0.031 -0.021 +/- 0.035 -0.050 +/- 0.240 -0.011 +/- 0.020 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 02/16/09 -0.010 +/- 0.027 -0.008 +/- 0.052 0.003 +/- 0.048 5.990 +/- 0.830 -0.004 +/- 0.026 0.023 +/- 0.029 04/29/09 -0.003 +/- 0.025 0.031 +/- 0.048 -0.034 +/- 0.053 5.730 +/- 0.810 0.003 +/- 0.022 -0.005 +/- 0.028 09/14/09 0.010 +/- 0.027 0.000 +/- 0.071 0.046 +/- 0.082 6.910 +/- 0.990 0.003 + 0.029 0.039 +/- 0.039 11/24/09 0.013 +/- 0.031 0.015 +/- 0.068 0.011 +/- 0.095 7.000 +/- 1.200 -0.014 +/- 0.027 0.027 +/- 0.041 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/16/09 0.025 + 0.026 -0.070 +/- 0.240 0.020 +/- 0.070 0.070 +/- 0.120 0.086 +/- 0.096 0.010 +/- 0.044 04/29/09 -0.008 +/- 0.025 -0.160 +/- 0.230 0.017 +/- 0.057 -0.070 +/- 0.110 0.053 +/- 0.063 0.006 +/- 0.043 09/14/09 -0.017 +/- 0.029 0.020 +/- 0.270 0.091 +/- 0.071 -0.060 +/- 0.110 -0.006 +/- 0.071 -0.011 +/- 0.060 11/24/09 0.007 +/- 0.031 -0.190 +/- 0.270 -0.014 +/- 0.074 0.100 +/- 0.140 -0.080 +/- 0.073 0.015 +/- 0.053 36-X Ag-10 m Be-7 Co-58 Co-60 Cr-51 Cs-134 02/16/09 0.003 +/- 0.039 0.040 +/- 0.230 -0.001 +/- 0.025 0.012 +/- 0.030 0.070 +/- 0.200 0.003 +/- 0.021 04/30/09 0.005 +/- 0.029 0.160 +/- 0.170 0.007 +/- 0.018 -0.003 +/- 0.024 0.010 +/- 0.160 -0.001 +/- 0.015 09/14/09 0.007 +/- 0.051 0.050 +/- 0.310 -0.021 +/- 0.033 -0.026 +/- 0.040 -0.130 +/- 0.270 -0.001 +/- 0.028 11/10/09 0.008 +/- 0.029 0.050 +/- 0.190 -0.008 +/- 0.023 0.006 +/- 0.025 0.030 +/- 0.170 0.005 +/- 0.019 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 02/16/09 0.011 +/- 0.026 0.016 +/- 0.066 -0.007 +/- 0.042 5.820 +/- 0.910 0.004 +/- 0.026 -0.021 +/- 0.027 04/30/09 -0.005 +/- 0.019 -0.020 +/- 0.047 -0.006 +/- 0.037 6.150 +/- 0.700 -0.015 +/- 0.018 -0.008 +/- 0.024 09/14/09 0.021 +/- 0.034 -0.026 +/- 0.062 -0.020 +/- 0.110 6.300 +/- 1.000 -0.016 +/- 0.030 -0.035 +/- 0.039 11/10/09 0.012 +/- 0.021 0.013 +/- 0.045 0.061 +/- 0.045 7.450 +/- 0.800 -0.008 +/- 0.023 0.020 +/- 0.026 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/16/09 -0.015 +/- 0.026 0.100 +/- 0.230 -0.012 +/- 0.066 0.040 +/- 0.110 -0.021 +/- 0.067 -0.005 +/- 0.043 04/30/09 0.002 +/- 0.021 0.000 +/- 0.180 -0.042 +/- 0.049 0.040 +/- 0.090 -0.038 +/- 0.053 -0.011 +/- 0.035 09/14/09 0.005 +/- 0.039 -0.070 +/- 0.340 -0.023 +/- 0.084 0.050 +/- 0.140 -0.100 +/- 0.083 0.026 +/- 0.056 11/10/09 0.004 +/- 0.022 -0.070 +/- 0.170 0.041 +/- 0.057 0.020 +/- 0.100 -0.032 +/- 0.051 -0.008 +/- 0.042 90-C Ag-l1Om Be-7 Co-58 Co-60 Cr-51 Cs-134 02/17/09 -0.023 +/- 0.032 -0.090 +/- 0.200 0.012 +/- 0.027 0.000 +/- 0.022 -0.080 +/- 0.210 0.008 +/- 0.017 04/28/09 0.000 +/- 0.033 0.210 +/- 0.180 0.005 +/- 0.021 -0.009 +/- 0.020 0.080 +/- 0.170 -0.011 +/- 0.015 08/31/09 0.009 +/- 0.047 0.190 +/- 0.260 0.000 +/- 0.033 -0.010 +/- 0.043 -0.080 +/- 0.220 0.006 +/- 0.023 11/24/09 0.005 +/- 0.031 0.090 +/- 0.220 0.004 +/- 0.024 0.000 +/- 0.026 0.100 +/- 0.270 0.001 +/- 0.022
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 16, Aquatic Flora - Fucus (pCi/g Wet)
Location Collection Isotope Date 90-C Cs-1 37 Fe-59 1-131 K-40 Mn-54 Nb-95 02/17/09 -0.002 +/- 0.024 -0.001 +/- 0.062 0.028 +/- 0.043 5.650 +/- 0.790 -0.032 +/- 0.026 -0.017 +/- 0.027 04/28/09 0.012 +/- 0.021 -0.033 +/- 0.044 0.039 +/- 0.033 5.060 +/- 0.630 -0.002 +/- 0.020 0.000 +/- 0.024 08/31/09 -0.001 +/- 0.034 -0.040 +/- 0.110 -0.026 +/- 0.057 6.500 +/- 1.200 -0.016 +/- 0.034 0.005 +/- 0.031 11/24/09 0.019 +/- 0.026 -0.058 +/- 0.055 -0.004 +/- 0.088 6.500 +/- 0.850 0.013 +/- 0.026 0.002 +/- 0.030 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/17/09 -0.003 +/- 0.023 0.210 +/- 0.220 -0.007 +/- 0.060 0.064 +/- 0.099 0.010 +/- 0.066 -0.020 +/- 0.044 04/28/09 0.001 +/- 0.022 0.020 +/- 0.170 0.039 +/- 0.052 0.030 +/- 0.100 0.032 +/- 0.050 0.006 +/- 0.033 08/31/09 0.012 +/- 0.027 -0.230 +/- 0.270 0.017 +/- 0.080 0.090 +/- 0.140 0.013 +/- 0.087 -0.Q017 +/- 0.054 11/24/09 -0.006 +/- 0.029 0U000 +/- 0.210 0.049 +/- 0.066 .070 +/- 0.140 -0.024 +/- 0.055 -0.016 +/- 0.047
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 17-A, Fish - Flounder (pCi/g Wet)
Location Collection Isotope Date 32 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 05/13/09 0.004 +/- 0.034 1 0.020 +/- 0.170 -0.008 +/- 0.027 0.011 +/- 0.029 -0.090 +/- 0.250 0.009 +/- 0.018 08/18/09 0.008 +/- 0.024 0.020 +/- 0.150 -0.016 +/- 0.016 -0.002 +/- 0.018 -0.090 +/- 0.150 -0.005 +/- 0.012 10/29/09 -0.004 +/- 0.032 -0.110 +/- 0.210 -0.010 +/- 0.023 -0.008 +/- 0.029 -0.110 +/- 0.240 0.018 +/- 0.022 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 05/13/09 -0.003 +/- 0.023 -0.043 +/- 0.060 0.012 +/- 0.066 3.830 +/- 0.780 -0.008 +/- 0.029 0.000 +/- 0.034 08/18/09 0.019 +/- 0.020 0.027 +/- 0.038 0.006 +/- 0.046 3.470 +/- 0.580 -0.009 +/- 0.019 0.011 +/- 0.023 10/29/09 -0.016 +/- 0.026 0.032 +/- 0.045 -0.027 +/- 0.098 4.050 +/- 0.880 -0.014 +/- 0.028 -0.005 +/- 0.033 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 05/13/09 -0.030 +/- 0.030 -0.030 +/- 0.240 0.031 +/- 0.057 -0.034 +/- 0.084 -0.063 +/- 0.067 0.005 +/- 0.049 08/18/09 -0.003 +/- 0.018 -0.100 +/- 0.170 0.028 +/- 0.050 -0.019 +/- 0.065 -0.007 +/- 0.039 0.003 +/- 0.030 10/29/09 0.008 +/- 0.030 -0.050 +/- 0.240 -0.035 +/- 0.066 0.005 +/- 0.078 -0.015 +/- 0.070 -0.029 +/- 0.059 35 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 05/13/09 0.005 +/- 0.040 I 0.070 +/- 0.210 0.004 +/- 0.026 -0.015 +/- 0.038 0.170 +/- 0.230 -0.013 +/- 0.018 09/15/09 0.015 +/- 0.026 0.010 +/- 0.170 -0.006 +/- 0.028 0.013 +/- 0.028 -0.030 +/- 0.170 0.006 +/- 0.016 10/01/09 0.005 +/- 0.042 -0.030 +/- 0.310 -0.018 +/- 0.047 -0.006 +/- 0.033 -0.290 +/- 0.290 0.013 +/- 0.023 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 05/13/09 -0.002 +/- 0.030 -0.065 +/- 0.069 -0.007 +/- 0.069 4.070 +/- 0.980 -0.013 +/- 0.023 0.025 +/- 0.024 09/15/09 0.007 +/- 0.027 -0.006 +/- 0.054 -0.013 +/- 0.049 3.270 +/- 0.740 0.010 +/- 0.023 0.005 +/- 0.029 10/01/09 0.004 +/- 0.034 -0.038 +/- 0.075 0.110 +/- 0.120 3.900 +/- 1.100 -0.001 +/- 0.037 -0.009 +/- 0.053 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 05/13/09 0.009 +/- 0.021 0.140 +/- 0.200 0.012 +/- 0.068 -0.058 +/- 0.083 -0.041 +/- 0.058 -0.003 +/- 0.030 09/15/09 -0.007 +/- 0.022 -0.070 +/- 0.180 0.000 +/- 0.052 0.108 +/- 0.083 -0.032 +/- 0.050 0.015 +/- 0.048 10/01/09 0.009 +/- 0.041 -0.180 +/- 0.270 -0.051 +/- 0.069 0.010 +/- 0.100 -0.044 +/- 0.083 0.004 +/- 0.049 3-58
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 17-B, Fish - Other (pCilg Wet)
Location Collection Sample Type Isotope Date 32 Ag-110m Be-7 Co-58 Co-60 Cr-51 05/13/09 STRIPED BASS -0.005 +/-0.041 I -0.020 +/- 0.200 0.017 +/- 0.022 0.023 +/- 0.043 0.070 +/- 0.250 09/01/09 TAUTOG -0.014 +/- 0.026 -0.020 +/- 0.130 0.004 +/- 0.021 0.011 +/- 0.025 0.110 +/-0.140 10/14/09 BLUEFISH -0.039 +/- 0.049 0.370 +/- 0.260 0.012 +/- 0.031 -0.034 +/- 0.044 0.090 +/- 0.220 Cs-1 34 Cs-1 37 Fe-59 1-131 K-40 05/13/09 STRIPED BASS -0.024 +/- 0.020 0.003 +/- 0.027 0.010 +/- 0.071 -0.036 +/- 0.089 4.700 +/- 1.100 09/01/09 TAUTOG -0.006 +/- 0.014 0.008 +/- 0.023 -0.002 +/- 0.048 0.004 +/- 0.031 4.630 +/- 0.800 10/14/09 BLUEFISH -0.006 +/- 0.023 -0.020 +/- 0.044 0.000 +/- 0.047 -0.027 +/- 0.041 3.200 +/- 1.100 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 05/13/09 STRIPED BASS -0.021 +/- 0.023 0.021 +/- 0.035 -0.003 +/- 0.028 -0.140 +/- 0.270 0.013 +/- 0.068 09/01/09 TAUTOG 0.013 +/- 0.020 -0.001s+/- 0.019 0.009 +/- 0.019 -0.040 +/- 0.190 -0.028 +/- 0.041 10/14/09 BLUEFISH -0.001 +/- 0.030 0.007/+/- 0.030 0.023 +/- 0.029 -0.150 +/- 0.290 -0.019 +/- 0.074 Th-228 Zr -65 Zr-95 05/13/09 STRIPED BASS 0.010 +/- 0.100 -0.009 +/- 0.076 -0.013 +/- 0.048 09/01/09 TAUTOG 0.097 +/- 0.067 0.004 +/- 0.046 0.023 +/- 0.037 10/14/09 BLUEFISH -0.020 +/- 0.120 0.012 +/- 0.094 0.020 +/- 0.060 35 Ag-I10m Be-7 Co-58 Co-60 Cr-51 06/17/09 STRIPED BASS 0.005 +/- 0.035 I -0.050 +/- 0.180 0.000 +/- 0.030 0.000 +/- 0.037 0.060 +/- 0.230 07/15/09 TAUTOG 0.010 +/- 0.032 0.000 +/- 0.230 0.007 +/- 0.025 0.005 +/- 0.017 -0.060 +/- 0.210 10/09/09 TAUTOG 0.005 +/- 0.050 0.000 +/- 0.280 0.005 +/- 0.033 -0.001 +/- 0.029 0.190 +/- 0.290 Cs-1 34 Cs-1 37 Fe-59 1-131 K-40 06/17/09 STRIPED BASS -0.006 +/- 0.014 0.017 +/- 0.030 0.057 +/- 0.065 0.065 +/- 0.069 3.740 +/- 0.980 07/15/09 TAUTOG -0.001 +/- 0.021 0.007 +/- 0.026 -0.024 +/- 0.062 0.000 +/- 0.048 3.490 +/- 0.920 10/09/09 TAUTOG 0.025 +/- 0.022 0.014 +/- 0.041 0.000 +/- 0.083 0.005 +/- 0.076 5.200 +/- 1.400 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 06/17/09 STRIPED BASS -0.011 +/- 0.026 -0.001 +/- 0.027 0.003 +/- 0.028 -0.030 +/- 0.210 -0.007 +/- 0.061 07/15/09 TAUTOG 0.028 +/- 0.024 0.014 +/- 0.035 -0.020 +/- 0.026 -0.010 +/- 0.270 -0.036 +/- 0.066 10/09/09 TAUTOG 0.004 +/- 0.039 0.001 +/- 0.053 -0.017 +/- 0.034 -0.050 +/- 0.310 0.075 +/- 0.093 Th-228 Zn-65 Zr-95 06/17/09 STRIPED BASS -0.002 +/- 0.095 0.021 +/- 0.076 -0.027 +/- 0.041 07/15/09 TAUTOG -0.094 +/- 0.092 -0.037 +/- 0.080 0.025 +/- 0.050 10/09/09 TAUTOG -0.060 +/- 0.130 0.033 +/- 0.081 0.018 +/- 0.072 40-X Ag-11Om Be-7 Co-58 ,Co-60 Cr-51 03/25/09 FISH-OTHER 0.016 +/- 0.038 0.120 +/- 0.200 0.016 +/- 0.033 -0.022 +/- 0.045 -0.170 +/- 0.250 06/04/09 STRIPED BASS -0.012 +/- 0.034 -0.030 +/- 0.150 0.013 +/- 0.028 0.000 +/- 0.018 0.030 +/- 0.170 12/30/09 STRIPED BASS -0.008 +/- 0.018 -0.040 +/- 0.140 0.010 +/- 0.017 0.005 +/- 0.014 0.020 +/- 0.140 Cs-1 34 Cs-137 Fe-59 1-131 K-40 03/25/09 FISH-OTHER 0.005 +/- 0.020 0.018 +/- 0.029 -0.010 +/- 0.076 0.033 +/- 0.076 4.000 +/- 1.000 06/04/09 STRIPED BASS -0.008 +/- 0.01.9 0.032 +/- 0.033 -0.032 +/- 0.087 0.000 +/- 0.040 3.600 +/- 1.000 12/30/09 STRIPED BASS 0.004 +/- 0.013 -0.003 +/- 0.016 -0.017 +/- 0.032 0.002 +/- 0.036 3.450 +/- 0.520 Mn-54 Nb-95 Ru-103 Ru-1 06 Sb-125 03/25/09 FISH-OTHER 0.004 +/- 0.029 -0.020 +/- 0.029 0.000 +/- 0.022 -0.100 +/- 0.270 0.014 +/- 0.058 06/04/09 STRIPED BASS -0.016 +/- 0.031 -0.016 +/- 0.030 -0.010 +/- 0.025 0.000 +/- 0.250 -0.015 +/- 0.068 12/30/09 STRIPED BASS -0.002 +/- 0.015 -0.004 +/- 0.019 -0.002 +/- 0.017 -0.040 +/- 0.150 -0.020 +/- 0.037 3-59
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 17-B, Fish - Other (pCilg Wet)
Location Collection Sample Type Isotope Date 40-X Th-228 Zn-65 Zr-95 03/25/09 FISH-OTHER 0.050 +/- 0.110 -0.009 +/- 0.062 -0.021 +/- 0.039 06104109 STRIPED BASS -0.013 +/- 0.091 -0.028 +/- 0.065 0.010 +/- 0.036 12/30/09 STRIPED BASS 0.016 +/- 0.064 -0.013 +/- 0.037 -0.004 +/- 0.023 3-60
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 18, Mussels (pCi/g Wet)
Location Collection Isotope Date 28 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 03/31/09 -0.006 + 0.035 J 0.250 +/- 0.240 0.002 +/- 0.019 0.003 +/- 0.038 0.060 +/- 0.270 -0.004 +/- 0.021 06/24/09 -0.004 + 0.031 K 0.210 +/- 0.220 0.008 +/- 0.019 0.007 +/- 0.030 -0.210 +/- 0.180 -0.002 +/- 0.019 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 03/31/09 -0.011 +/- 0.026 0.039 +/- 0.062 0.009 +/- 0.054 1.460 +/- 0.750 0.000 +/- 0.031 0.002 +/- 0.022 06124/09 -0.010 +/- 0.026 -0.007 +/- 0.054 0.014 +/- 0.045 1.330 +/- 0.640 0.004 +/- 0.025 0.010 +/- 0.026 Ru-103 Ru-106 Sb-1 25 Th-228 Zn-65 Zr-95 03/31/09 -0.035 + 0.030 -0.010 +/-0.260 -0.007 +/- 0.078 -0.010 +/- 0.110 0.020 +/- 0.086 -0.026 +/- 0.050 06/24/09 0.010 +/- 0.027 0.020 +/-0.200 0.045 +/- 0.059 -0.138 +/- 0.098 0.038 +/- 0.051 0.021 +/- 0.042 30 Ag-110rn Be-7 Co-58 Co-60 Cr-51 Cs-134 03/23/09 0.006 +/- 0.038 0.110 +/- 0.170 0.011 +/- 0.026 0.004 +/- 0.032 -0.150 +/- 0.280 0.005 +/- 0.022 06/23/09 -0.016 + 0.026 0.070 +/- 0.160 0.003 +/- 0.021 -0.021 +/- 0.028 0.010 +/- 0.180 -0.003 +/- 0.017 09/23/09 -0.005 +/- 0.025 0.000 +/- 0.120 -0.007 +/- 0.019 0.000 +/- 0.019 -0.100 +/- 0.150 0.001 +/- 0.012 11/30/09 0.007 + 0.029 0.150 +/- 0.240 0.024 +/- 0.030 0.005 +/- 0.024 0.080 +/- 0.230 -0.006 +/- 0.021 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 03/23/09 -0.008 +/- 0.031 0.011 +/- 0.065 -0.033 +/- 0.087 1.760 +/- 0.780 0.000 +/- 0.026 0.021 +/- 0.031 06/23/09 0.010 + 0.026 -0.015 +/- 0.063 0.042 +/- 0.038 1.910 +/- 0.700 0.000 +/- 0.023 0.009 +/- 0.025 09/23/09 0.000 +/- 0.018 -0.035 +/- 0.045 -0.007 +/- 0.046 2.080 +/- 0.500 0.018 +/- 0.017 -0.009 +/- 0.019 11/30/09 0.028 +/- 0.027 -0.040 +/- 0.058 0.015 +/- 0.059 1.750 +/- 0.650 0.007 +/- 0.024 0.007 +/- 0.032 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/23/09 -0.007 +/- 0.033 -0.110 +/- 0.280 0.015 +/- 0.058 -0.100 +/- 0.120 -0.050 +/- 0.066 0.017 +/- 0.040 06/23/09 0.002 + 0.022 0.180 +/- 0.210 0.010 +/- 0.049 0.025 +/- 0.090 0.010 +/- 0.053 -0.001 +/- 0.034 09/23/09 0.004 +/- 0.017 0.020 +/- 0.160 0.000 +/- 0.040 0.030 +/- 0.066 -0.011 +/- 0.046 -0.021 +/- 0.028 11/30/09 -0.003 + 0.024 -0.050 +/- 0.270 0.019 +/- 0.074 0.030 +/- 0.110 -0.016 +/- 0.063 -0.029 +/- 0.037
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 19, Oysters (pCilg Wet)
Location Collection Isotope Date 31 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 03/11/09 -0.025 + 0.061 -0.290 +/- 0.230 0.025 +/- 0.033 -0.012 +/- 0.042 0.060 +/- 0.300 -0.012 +/- 0.025 06/03/09 0.009 + 0.028 0.040 +/- 0.180 -0.003 +/- 0.019 -0.004 +/- 0.019 -0.030 +/- 0.190 -0.006 +/- 0.017 09/14/09 -0.008 + 0.020 0.110 +/- 0.120 0.004 +/- 0.015 0.003 +/- 0.016 -0.050 +/- 0.150 0.005 +/- 0.012 12/29/09 -0.013 +/- 0.020 0.060 +/- 0.130 -0.015 +/- 0.016 -0.003 +/- 0.015 0.050 +/- 0.160 -0.005 +/- 0.017 Cs-1 37 Fe-59 1-131 K-40 Mn-54 Nb-95 03/11/09 0.008 +/- 0.033 -0.014 +/- 0.075 0.012 +/- 0.041 1.720 +/- 0.860 -0.019 +/- 0.030 -0.024 +/- 0.036 06/03/09 0.015 +/- 0.025 -0.007 +/- 0.043 0.028 +/- 0.036 2.120 +/- 0.630 0.003 +/- 0.020 0.030 +/- 0.029 09/14/09 0.015 +/- 0.016 -0.024 +/- 0.034 0.002 +/- 0.031 1.680 +/- 0.370 -0.005 +/- 0.014 -0.009 +/- 0.020 12/29/09 0.001 +/- 0.015 -0.013 +/- 0.036 0.002 +/- 0.041 1.730 +/- 0.370 -0.006 +/- 0.015 -0.00Z+/- 0.020 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/11/09 -0.009 +/- 0.029 0.310 +/- 0.280 -0.098 +/- 0.090 -0.050 +/- 0.130 -0.015 +/- 0.089 0.014 +/- 0.051 06/03/09 0.003 +/- 0.024 0.060 +/- 0.230 0.039 +/- 0.060 0.033 +/- 0.094 0.006 +/- 0.063 0.018 +/- 0.032 09/14/09 -0.013 +/- 0.018 0.080 +/- 0.150 0.024 +/- 0.036 0.009 +/- 0.050 -0.028 +/- 0.040 0.015 +/- 0.026 12/29/09 -0.010 +/- 0.019 0.010 +/- 0.140 0.021 +/- 0.043 -0.008 +/- 0.060 0.028 +/- 0.050 0.006 +/- 0.027 32 Ag-1 1Om Be-7 Co-58 Co-60 Cr-51 Cs-134 03/10/09 0.005 +/- 0.025 0.010 +/- 0.120 0.004 +/- 0.014 0.007 +/- 0.019 -0.100 +/- 0.130 -0.008 +/- 0.013 05/27/09 0.078 +/- 0.055 0.060 +/- 0.220 -0.018 +/- 0.029 0.007 +/- 0.023 0.090 +/- 0.210 0.002 +/- 0.020 07/08/09 0.022 +/- 0.028. 0.100 +/- 0.170 0.017 +/- 0.018 0.003 +/- 0.024 0.140 +/- 0.210 0.002 +/- 0.015 12/29/09 0.025 +/- 0.029 0.070 +/- 0.200 -0.021 +/- 0.023 0.007 +/- 0.025 0.040 +/- 0.180 0.002 +/- 0.016 Cs437 Fe-59 1-131 K-40 Mn-54 Nb-95 03/10/09 -0.020 +/- 0.019 0.011 +/- 0.041 -0.011 +/- 0.025 1.930 +/- 0.410 0.002 +/- 0.014 0.015 +/- 0.020 05/27/09 -0.019 +/- 0.053 0.021 +/- 0.046 0.000 +/- 0.043 1.100 +/- 0.680 0.004 +/- 0.029 0.023 +/- 0.040 07/08/09 -0.030 +/- 0.021 0.016 +/- 0.041 -0.004 +/- 0.051 2.390 +/- 0.560 0.000 +/- 0.020 0.003 +/- 0.028 12/29/09 -0.035 +/- 0.029 0.033 +/- 0.052 0.022 +/- 0.048 2.180 +/- 0.580 0.020 +/- 0.023 0.011 +/- 0.026 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/10/09 0.006 +/- 0.019 0.060 +/- 0.140 0.010 +/- 0.037 -0.030 +/- 0.063 -0.013 +/- 0.037 -0.026 +/- 0.032 05/27/09 0.031 +/- 0.032 0.040 +/- 0.260 0.041 +/- 0.064 -0.130 +/- 0.110 -0.043 +/- 0.074 -0.002 +/- 0.048 07/08/09 -0.010 _ 0.026 0.100 +/- 0.180 0.055 +/- 0.056 -0.034 +/- 0.076 0.008 +/- 0.050 -0.014 +/- 0.027 12/29/09 0.004 +/- 0.024 0.100 +/- 0.200 -0.036 +/- 0.046 0.009 +/- 0.080 -0.011 +/- 0.052 0.027 +/- 0.037 34-X Ag- 10mn Be-7 Co-58 Co-60 Cr-51 Cs-134 03/11/09 -0.005 +/- 0.034 -0.200 +/- 0.210 -0.007 +/- 0.030 0.000 +/- 0.035 -0.020 +/- 0.170 -0.025 +/- 0.023 06/03/09 0.015 +/- 0.036 -0.130 +/- 0.200 0.016 +/- 0.035 0.008 +/- 0.041 0.020 +/- 0.200 0.016 +/- 0.020 09/14/09 -0.006 +/- 0.020 0.040 +/- 0.120 0.009 +/- 0.016 -0.003 +/- 0.015 0.020 +/- 0.120 0.002 +/- 0.010 12/29/09 0.000 +/- 0.029 0.010 +/- 0.140 -0.007 +/- 0.021 0.007 +/- 0.018 -0.140 +/- 0.140 0.004 +/- 0.015 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 03/11/09 0.009 +/- 0.023 -0.006 +/- 0.062 0.037 +/- 0.037 1.620 +/- 0.660 -0.004 +/- 0.026 -0.013 +/- 0.028 06/03/09 -0.004 +/- 0.033 0.006 +/- 0.079 0.000 +/- 0.045 2.570 +/- 0.970 -0.010 +/- 0.025 0.008 +/- 0.030 09/14/09 0.005 +/- 0.013 0.004 +/- 0.025 -0.018 +/- 0.032 2.070 +/- 0.390 -0.011 +/- 0.013 -0.005 +/- 0.014 12/29/09 0.007 +/- 0.019 0.020 +/- 0.042 0.048 +/- 0.047 1.700 +/- 0.530 -0.004 +/- 0.017 0.002 +/- 0.023
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 19, Oysters (pCi/g Wet)
Location Collection Isotope Date 34-X Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/11/09 0.014 +/- 0.021 0.130 +/- 0.310 0.022 +/- 0.061 0.050 +/- 0.120 -0.083 +/- 0.077 0.032 +/- 0.056 06/03/09 0.008 +/- 0.032 0.020 +/- 0.230 -0.019 +/- 0.080 -0.084 +/- 0.097 0.049 +/- 0.076 0.004 +/- 0.047 09/14/09 0.003 +/- 0.014 -0.010 +/- 0.130 0.012 +/- 0.034 -0.023 +/- 0.052 -0.009 +/- 0.032 -0.012 +/- 0.022 12/29/09 -0.003 +/- 0.021 0.010 +/- 0.180 -0.017 +/- 0.045 0.047 +/- 0.088 -0.014 +/- 0.039 0.001 +/- 0.029 37-C Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 03/10/09 -0.025 +/- 0.033 -0.140 +/- 0.160 0.012 +/- 0.027 0.004 +/- 0.024 -0.070 +/- 0.190 0.014 +/- 0.019 06/02/09 0.000 +/- 0.028 -0.060 +/- 0.190 -0.030 +/- 0.024 0.000 +/- 0.035 -0.050 +/- 0.150 0.006 +/- 0.023 09/14/09 -0.028 +/- 0.022 0.050 +/- 0.160 0.008 +/- 0.019 -0.003 +/- 0.023 -0.160 +/- 0.120 0.009 +/- 0.014 12/28/09 0.002 +/- 0.020 0.065 +/- 0.130 0.004 +/- 0.016 0.003 +/- 0.013 -0.020 +/- 0.140 -0.007 +/- 0.011 Cs-137 lFe-59 1-131 K-40 Mn-54 Nb-95 03/10/09 -0.016 +/- 0.018 0.025 +/- 0.045 -0.025 +/- 0.040 2.480 +/- 0.680 -0.017 +/- 0.020 -0.008 +/- 0.027 06/02/09 -0.019 +/- 0.033 -0.016 +/- 0.058 0.010 +/- 0.053 2.070 +/- 0.930 0.000 +/- 0.027 -0.016 +/- 0.029 09/14/09 0.002 +/- 0.020 0.022 +/- 0.053 0.003 +/- 0.049 2.080 +/- 0.570 -0.009 +/- 0.018 -0.002 +/- 0.021 12/28/09 0.003 +/- 0.015 -0.001 +/- 0.028 -0.017 +/- 0.038 2.260 +/- 0.420 -0.007 +/- 0.013 -0.013 +/- 0.020 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/10/09 0.000 +/- 0.028 0.140 +/- 0.220 0.048 +/- 0.058 -0.023 +/- 0.085 -0.024 +/- 0.068 0.010 +/- 0.036 06/02/09 -0.004 +/- 0.023 -0.090 +/- 0.320 0.027 +/- 0.074 0.010 +/- 0.110 -0.020 +/- 0.079 -0.025 +/- 0.054 09/14/09 -0.005 +/- 0.017 0.020 +/- 0.170 -0.026 +/- 0.043 0.063 +/- 0.079 0.015 +/- 0.038 -0.005 +/- 0.029 12/28/09 -0.012 +/- 0.016 -0.110 +/- 0.130 -0.025 +/- 0.041 0.073 +/- 0.058 -0.022 +/- 0.039 -0.004 +/- 0.026 88-1 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 03/11/09 0.023 +/- 0.038 -0.100 +/- 0.260 0.014 +/- 0.027 0.020 +/- 0.034 -0.020 +/- 0.180 0.001 +/- 0.018 06/02/09 -0.032 +/- 0.056 -0.070 +/- 0.200 0.023 +/- 0.043 0.008 +/- 0.029 -0.190 +/- 0.210 0.003 +/- 0.022 08/31/09 0.002 +/- 0.026 -0.030 +/- 0.180 -0.004 +/- 0.021 0.000 +/- 0.017 0.040 +/- 0.160 -0.003 +/- 0.015 12/28/09 -0.007 +/- 0.028 -0.140 +/- 0.180 -0.005 +/- 0.017 -0.003 +/- 0.024 -0.040 +/- 0.170 0.006 +/- 0.012 Cs-1 37 Fe-59 1-131 K-40 Mn-54 Nb-95 03/11/09 0.014 + 0.027 -0.004 +/- 0.047 0.008 +/- 0.045 1.820 +/- 0.690 -0.018 +/- 0.023 0.014 +/- 0.032 06/02/09 -0.003 +/- 0.032 -0.095 +/- 0.087 -0.006 +/- 0.049 1.690 +/- 0.910 0.022 +/- 0.031 0.001 +/- 0.022 08/31/09 0.006 +/- 0.015 0.053 +/- 0.044 0.021 +/- 0.039 1.790 +/- 0.530 -0.010 +/- 0.019 0.003 +/- 0.022 12/28/09 0.005 +/- 0.024 0.024 +/- 0.047 -0.044. +/- 0.057 2.020 +/- 0.510 -0.020 +/- 0.023 -0.022 +/- 0.028 Ru-I 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/11/09 0.007 +/- 0.031 -0.230 +/- 0.260 0.034 +/- 0.072 0.040 +/- 0.100 -0.017 +/- 0.060 0.025 +/- 0.039 06/02/09 0.022 +/- 0.032 -0.090 +/- 0.320 0.083, +/- 0.065 0.020 +/- 0.140 -0.023 +/- 0.092 0.023 +/- 0.053 08/31/09 -0.008 +/- 0.019 -0.090 +/- 0.170 0.057 +/- 0.056 0.062 +/- 0.086 0.000 +/- 0.045 0.021 +/- 0.032 12/28/09 0.013 +/- 0.020 -0.170 +/- 0.150 -0.010 +/- 0.052 0.011 +/- 0.078 -0.004 +/- 0.050 -0.032 +/- 0.037 3-63
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 20, Clams (pCilg Wet)
Location Collection Isotope Date 29 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 01/08/09 0.016 1 0.038 0.140 +/- 0.170 0.011 +/- 0.024 0.000 +/- 0.023 -0.010 +/- 0.140 -0.002 +/- 0.014 06/17/09 -0.014 +/- 0.031 0.070 +/- 0.190 -0.030 +/- 0.026 0.012 +/- 0.033 -0.140 +/- 0.250 0.000 +/- 0.017 07/20/09 -0.014 +/- 0.026 0.170 +/- 0.170 0.020 +/- 0.024 -0.013 +/- 0.021 0.050 +/- 0.190 0.006 +/- 0.015 11/05/09 0.011 +/- 0.042 0.320 +/- 0.270 0.000 +/- 0.042 -0.022 +/- 0.025 -0.080 +/- 0.280 -0.012 +/- 0.018 Cs-1 37 Fe-59 1-131 K-40 Mn-54 Nb-95 01/08/09 0.006 + 0.020 -0.005 +/- 0.050 0.003 +/- 0.027 1.980 +/- 0.690 0.019 +/- 0.025 0.018 +/- 0.020 06/17/09 -0.002 +/- 0.018 -0.036 +/- 0.050 0.048 +/- 0.078 2.100 +/- 0.740 0.010 +/- 0.024 -0.015 +/- 0.028 07/20/09 0.008 +/- 0.023 -0.005 +/- 0.048 0.004 +/- 0.052 1.700 +/- 0.570 -0.007 +/- 0 023 -0.007 +/- 0.023 11/05/09 0.000 +/- 0.038 -0.052 +/- 0.074 0.033 +/- 0.087 2.900 +/- 1.000 0.003 +/- 0.-29 -0.006 +/- 0.044
. Zr-95 Ru-103 Ru-1 06 Sb-125 Th-228 Zn-65 01/08/09 0.009 + 0.020 -0.170 +/- 0.190 0.026 +/- 0.049 0.058 +/- 0.093 0.021 +/- 0.067 -0.044 +/- 0.038 06/17/09 -0.023 +/- 0.022 -0.170 +/- 0.230 0.006 +/- 0.062 -0.034 +/- 0.075 -0.008 +/- 0.055 0.014 +/- 0.055 07/20/09 0.004 +/- 0.025 -0.120 +/- 0.190 0.000 +/- 0.050 -0.023 +/- 0.092 0.002 +/- 0.041 -0.022 +/- 0.036 11/05/09 -0.009 +/- 0.028 0.000 +/- 0.330 0.030 +/- 0.073 -0.020 +/- 0.130 0.026 +/- 0.051 -0.017 +/- 0.062 35-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 01/06/09 0.013 +/- 0.039 0.100 +/- 0.170 -0.016 +/- 0.029 0.005 +/- 0.024 -0.150 +/- 0.150 -0.021 +/- 0.017 05/11/09 -0.005 +/- 0.035 -0.220 +/- 0.220 0.004 +/- 0.014 -0.011 +/- 0.033 0.020 +/- 0.180 -0.008 +/- 0.018 07/20/09 -0.021 +/- 0.045 0.000 +/- 0.200 -0.012 +/- 0.028 -0.015 +/- 0.035 -0.180 +/- 0.250 0.019 +/- 0.020 11/03/09 -0.006 +/- 0.037 -0.030 +/- 0.220 -0.004 +/- 0.031 0.023 +/- 0.023 0.190 +/- 0.200 0.003 +/- 0.019 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 01/06/09 0.015 +/- 0.022 0.004 +/- 0.048 -0.003 +/- 0.033 1.940 +/- 0.670 0.009 +/- 0.020 -0.033 +/- 0.025 05/11/09 -0.013 +/- 0.022 0.008 +/- 0.048 0.000 +/- 0.089 1.300 +/- 0.670 -0.004 +/- 0.022 -0.002 +/- 0.025 07/20/09 0.006 + 0.029 -0.026 +/- 0.047 -0.022 +/- 0.055 1.540 +/- 0.640 -0.001 +/- 0.021 -0.018 +/- 0.036 11/03/09 -0.023 +/- 0.032 0.000 +/- 0.049 0.035 +/- 0.046 2.070 +/- 0.840 -0.008 +/- 0.026 -0.001 +/- 0.036 Ru-103 Ru-1 06 Sb-125 Th-228 Zn-65 Zr-95 01/06/09 0.012 +/- 0.020 -0.240 +/- 0.230 0.011 +/- 0.053 0.041 +/- 0.097 0.007 +/- 0.074 -0.028 +/- 0.045 05/11/09 -0.007 +/- 0.028 -0.060 +/- 0.220 -0.052 +/- 0.045 0.050 +/- 0.110 0.014 +/- 0.062 -0.020 +/- 0.047 07/20/09 0.003 +/- 0.029 0.100 +/- 0.280 -0.020 +/- 0.059 0.040 +/- 0.110 0.035 +/- 0.073 0.041 +/- 0.048 11/03/09 0.007 + 0.028 -0.120 +/- 0.180 0.022 +/- 0.062 -0.050 +/- 0.130 0.020 +/- 0.048 -0.014 +/- 0.051 38 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 01/06/09 -0.038 +/- 0.038 -0.020 +/- 0.220 -0.006 +/- 0.028 0.008 +/- 0.025 -0.090 +/- 0.200 -0.010 +/- 0.018 05/11/09 -0.008 +/- 0.026 -0.070 +/- 0.140 -0.016 +/- 0.025 0.002 +/- 0.018 0.220 +/- 0.210 0.011 +/- 0.014 07/20/09 0.016 +/- 0.039 -0.170 +/- 0.190 -0.012 +/- 0.026 0.006 +/- 0.025 -0.030 +/- 0.180 0.001 +/- 0.017 11/03/09 0.021 +/- 0.029 0.040 +/- 0.240 0.014 +/- 0.028 -0.005 +/- 0.025 0.110 +/- 0.240 0.008 +/- 0.020 Cs-1 37 Fe-59 1-131 K-40 Mn-54 Nb-95 01/06/09 0.017 +/- 0.033 -0.033 +/- 0.052 0.023 +/- 0.044 1.530 +/- 0.640 -0.007 +/- 0.020 -0.008 +/- 0.030 05/11/09 0.012 +/- 0.019 0.004 +/- .0.047 0.033 +/- 0.073 1.630 +/- 0.470 -0.004 +/- 0.017 0.003 +/- 0.030 07/20/09 -0.001 +/- 0.015 -0.005 +/- 0.059 0.016 +/- 0.057 1.440 +/- 0.700 0.000 +/- 0.021 -0.003 +/- 0.017 11/03/09 0.011 +/- 0.032 -0.041 +/- 0.059 -0.034 +/- 0.049 3.150 +/- 0.850 0.008 +/- 0.023 0.012 +/- 0.041 3-64
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 20, Clams (pCi/g Wet)
Location Collection Isotope Date 38 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 01/06/09 0.013 +/- 0.019 0.020 +/- 0.230 -0.006 +/- 0.053 0.070 +/- 0.100 0.025 +/- 0.073 0.020 +/- 0.037 05/11/09 0.001 +/- 0.023 -0.040 +/- 0.190 -0.015 +/- 0.044 0.012 +/- 0.066 -0.013 +/- 0.051 0.021 +/- 0.045 07/20/09 -0.019 + 0.023 0.150 +/- 0.240 -0.007 +/- 0.063 -0.043 +/- 0.095 0.016 +/- 0.057 -0.003 +/- 0.038 11/03/09 0.017 + 0.021 0.000 +/- 0.210 -0.039 +/- 0.063 -0.020 +/- 0.110 0.008 +/- 0.059 0.012 +/- 0.049 39-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 01/08/09 0.013 +/- 0.034 -0.040 +/- 0.190 0.012 +/- 0.024 0.004 +/- 0.016 -0.030 +/- 0.210 0.008 +/- 0.019 06/17/09 0.009 +/- 0.028 -0.030 +/- 0.190 -0.007 +/- 0.019 -0.003 +/- 0.025 0.040 +/- 0.190 -0.009 +/- 0.016 09/14/09 0.033 +/- 0.03( 0.060 +/- 0.160 -0.010 +/- 0.020 0.009 +/- 0.023 0.140 +/- 0.180 0.009 +/- 0.015 12/01/09 0.000 +/- 0.03¶' 0.100 +/- 0.170 -0.013 +/- 0.024 0.014 +/- 0.037 -0.010 +/- 0.170 -0.002 +/- 0.019 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 01/08/09 -0.003 + 0.023 0.007 +/- 0.053 0.000 +/- 0.033 2.090 +/- 0.770 0.012 +/- 0.024 -0.004 +/- 0.020 06/17/09 0.005 + 0.018 -0.012 +/- 0.050 0.052 +/- 0.061 2.200 +/- 0.540 -0.026 +/- 0.024 0.020 +/- 0.025 09/14/09 -0.001 +/- 0.022 0.020 +/- 0.052 0.036 +/- 0.056 1.680 +/- 0.530 -0.003 +/- 0.016 0.013 +/- 0.025 12/01/09 -0.020 + 0.027 0.011 +/- 0.060 -0.012 +/- 0.036 2.020 +/- 0.710 -0.005 +/- 0.023 -0.020 +/- 0.025 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 01/08/09 0.002 +/- 0.026 0.060 +/- 0.240 0.040 +/- 0.052 0.041 +/- 0.089 -0.023 +/- 0.064 0.004 +/- 0.034 06/17/09 0.004 +/- 0.022 -0.090 +/- 0.190 0.021 +/- 0.046 -0.026 +/- 0.071 0.030 +/- 0.047 0.012 +/- 0.039 09/14/09 -0.012 +/- 0.020 -0.040 +/- 0.190 0.014 +/- 0.044 -0.020 +/- 0.072 0.014 +/- 0.040 0.003 +/- 0.034 12/01/09 0.021 +/- 0.024 -0.200 +/- 0.240 0.035 +/- 0.062 -0.078 +/- 0.092 -0.035 +/- 0.073 0.011 +/- 0.042 3-65
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 22, Lobsters (pCi/g Wet)
Location Collection Isotope Date Date 32 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 02/02/09 0.016 +/- 0.038 -0.140 +/- 0.230 -0.008 +/- 0.032 -0.016 +/- 0.033 0.160 +/- 0.210 -0.003 +/- 0.022 05/04/09 0.000 +/- 0.039 0.030 +/- 0.190 0.006 +/- 0.017 -0.016 +/- 0.022 0.080 +/- 0.240 0.006 +/- 0.025 07/13/09 -0.005 +/- 0.042 -0.100 +/- 0.270 -0.021 +/- 0.020 0.005 +/- 0.025 0.190 +/- 0.270 -0.015 +/- 0.021 11/10/09 0.026 +/- 0.042 -0.220 +/- 0.320 0.022 +/- 0.035 -0.003 +/- 0.042 -0.070 +/- 0.250 -0.015 +/- 0.027 Cs-1 37 Fe-59 1-131 K-40 Mn-54 Nb-95 02/02/09 -0.009 +/- 0.019 -0.008 +/- 0.073 0.008 +/- 0.041 2.01 0 +/- 0.740 -0.029 +/- 0.027 -0.016 +/- 0.037 05/04/09 0.001 +/- 0.032 -0.074 +/- 0.069 0.013 +/- 0.052 1.70)0 +/- 0.850 0.025 +/- 0.028 0.014 +/- 0.037 07/13/09 -0.009 +/- 0.026 -0.042 +/- 0.067 -0.036 +/- 0.054 2.4410 +/- 0.790 -0.017 +/- 0.024 0.002 +/- 0.027 11/10/09 -0.001 +/- 0.043 0.029 +/- 0.070 0.019 +/- 0.062 2.30)0 +/- 0.990 0.008 +/- 0.028 -0.019 +/- 0.044 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/02/09 0.012 +/- 0.023 -0.040 +/- 0.250 0.020 +/- 0.075 0.010 +/- 0.110 -0.068 +/- 0.076 -0.010 +/- 0.052 05/04/09 -0.008 +/- 0.027 -0.100 +/- 0.360 0.018 +/- 0.080 -0.040 +/- 0.120 -0.012 +/- 0.073 -0.001 +/- 0.058 07/13/09 -0.002 +/- 0.028 -0.110 +/- 0.290 -0.069 +/- 0.059 -0.090 +/- 0.100 0.012 +/- 0.055 0.025 +/- 0.035 11/10/09 0.010 +/- 0.027 0.130 +/- 0.270 -0.021 +/- 0.080 -0.040 +/- 0.140 -0.014 +/- 0.085 0.012 +/- 0.076 35 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-1 34 02/02/09 0.006 +/- 0.033 -0.080 +/- 0.210 0.005 +/- 0.019 0.025 +/- 0.023 -0.110 +/- 0.170 -0.007 +/- 0.021 05/04/09 -0.013 +/- 0.035 0.070 +/- 0.210 0.003 +/- 0.022 -0.008 +/- 0.027 0.040 +/- 0.180 -0.010 +/- 0.016 07/13/09 -0.024 +/- 0.053 -0.040 +/- 0.260 0.030 +/- 0.030 0.005 +/- 0.046 -0.030 +/- 0.270 0.004 +/- 0.021 11/03/09 -0.014 +/- 0.037 0.120 +/- 0.250 -0.012 +/- 0.028 -0.007 +/- 0.024 0.030 +/- 0.190 -0.020 +/- 0.021 Cs-1 37 Fe-59 1-131 K-40 Mn-54 Nb-95 02/02/09 -0.013 +/- 0.021 -0.002 +/- 0.037 -0.003 +/- 0.039 2.450 +/- 0.610 -0.018 +/- 0.021 -0.022 +/- 0.023 05/04/09 -0.005 +/- 0.024 0.030 +/- 0.043 -0.009 +/- 0.048 2.280 +/- 0.700 -0.006 +/- 0.020 0.012 +/- 0.028 07/13/09 -0.009 +/- 0.034 0.014 +/- 0.075 -0.038 +/- 0.069 2.420 +/- 0.980 -0.035 +/- 0.033 -0.025 +/- 0.033 11/03/09 0.009 +/- 0.033 0.044 +/- 0.059 -0.012 +/- 0.047 1.700 +/- 0.600 -0.013 +/- 04023 -0.017 +/- 0.031 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/02/09 0.000 +/- 0.021 -0.060 +/- 0.220 0.012 +/- 0.059 -0.015 +/- 0.083 -0.093 +/- 0.061 0.012 +/- 0.033 05/04/09 -0.024 +/- 0.028 0.070 +/- 0.270 -0.033 +/- 0.068 0.029 +/- 0.097 -0.049 +/- 0.057 0.026 +/- 0.034 07/13/09 0.018 +/- 0.037 0.150 +/- 0.290 0.010 +/- 0.062 0.040 +/- 0.130 -0.014 +/- 0.063 -0.012 +/- 0.058 11/03/09 0.023 +/- 0.026 0.030 +/- 0.240 -0.040 +/- 0.059 0.055 +/- 0.089 -0.079 +/- 0.063 -0.007 +/- 0.051 37-X Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 02/02/09 -0.012 +/- 0.037 -0.210 +/- 0.230 -0.013 +/- 0.024 0.004 +/- 0.033 0.110 +/- 0.260 0.007 +/- 0.015 05/06/09 -0.004 +/- 0.033 0.120 +/- 0.200 -0.022 +/- 0.030 -0.008 +/- 0.023 0.020 +/- 0.200 -0.002 +/- 0.019 07/20/09 -0.020 +/- 0.037 -0.180 +/- 0.250 0.001 +/- 0.033 -0.008 +/- 0.024 0.010 +/- 0.240 0.014 +/- 0.019 11/10/09 -0.021 +/- 0.051 0.090 +/- 0.270 -0.011 +/- 0.039 -0.014 +/- 0.053 -0.060 +/- 0.240 -0.004 +/- 0.026 Cs-1 37 Fe-59 1-131 K-40 Mn-54 Nb-95 02/02/09 0.005 +/- 0.026 -0.040 +/- 0.070 -0.009 +/- 0.048 2.730 +/- 0.890 0.012 +/- 0.030 0.003 +/- 0.026 05/06/09 -0.007 +/- 0.024 0.014 +/- 0.066 -0.008 +/- 0.040 2.050 +/- 0.660 0.006 +/- 0.021 -0.009 +/- 0.028 07/20/09 0.008 +/- 0.026 0.068 +/- 0.064 0.037 +/- 0.072 2.430 +/- 0.880 0.033 +/- 0.031 -0.007 +/- 0.043 11/10/09 -0.005 +/- 0.044 -0.050 +/- 0.110 -0.056 +/- 0.065 2.400 +/- 1.100 -0.004 +/- 0.027 -0.004 +/- 0.038 3-66
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 1 2009 Table 22, Lobsters (pCi/g Wet)
Location Collection Isotope Date 37-X Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/02/09 0.016 +/- 0.028 -0.200+/- 0.250 -0.038 + 0.072 0.000 +/- 0.098 -0.031 +/- 0.061 -0.010 +/- 0.037 05/06/09 0.016 +/- 0.030 0.120 +/- 0.230 0.006 +/- 0.061 -0.109 +/- 0.085 -0.014 +/- 0.056 -0.005 +/- 0.039 07/20/09 0.011 +/- 0.031 -0.030+/- 0.290 0.032 +/- 0.076 -0.020 +/- 0.110 -0.022 +/- 0.062 0.023 +/- 0.037 11/10/09 -0.011 +/- 0.027 -0.100+/- 0.350 -0.012 +/- 0.074 0.040 + 0.130 -0.032 +/- 0.079 0.019 +/- 0.060 3-67
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 NOTES FOR DATA TABLES
- Collection Dates for Air Particulates and lodines are. listed as Monday through Sunday, however the typical change-out days are on Tuesdays Moved sampler at Bird Sanctuary (location 03) to new area on April 7, 2009, A approximately 75 feet southeast of previous location Moved sampler at Norwich (location 15) to new area on June 2, 2009, B approximately 800 feet northwest of previous location Low volume (5,743 cubic feet, 77 hours8.912037e-4 days <br />0.0214 hours <br />1.273148e-4 weeks <br />2.92985e-5 months <br />) of air sampled during sampling week of June 30, 2009 to July 7, 2009 at Bird Sanctuary (location 03), caused by blown C fuse.
Air sampler at Bird Sanctuary (location 03) experienced loss of power from November 27, 2009 09:19 to November 28, 2009 14:33. 11,188 cubic feet of air D was sampled. Loss of power was caused by a blown fuse.
Air sampler at Niantic location (location 27) experienced loss of power during sampling week of September 30, 2009 0:34 to Septembe*.30, 09 09:54. 13,039 E cubic feet of air was sampled. Shut down was caused by a breaker trip.
F Non-pasture grass samples (i.e. hay, grain).
G Broadleaf Vegetation was unavailable due to scarcity in April 2009.
First quarter continuous seawater samples at Vicinity of Discharge (location 32) had low volume during the week of January 20, 2009 due to freezing/clogging of the intake tubing line, which has since been corrected. Subsequent low volumes during weeks of January 27, 2009 and February 10, 2009 were caused by freezing H of the intake tubing from cold air temperatures.
First quarter flounder and other fish species at Vicinity of Discharge (location 32) and Niantic Bay (location 35) were unavailable due to scarcity during winter I season.
Third quarter mussels at Two Tree Island (location 28) were unavailable due to J not being found inter-tidally and sub-tidally using SCUBA.
Fourth quarter mussels at Two Tree Island (location28) were unavailable due to K not being found inter-tidally and sub-tidally using SCUBA.
3-68
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009
- 4. DISCUSSION OF RESULTS This section summarizes the results of the analyses on the REMP (Radiological Environmental Monitoring Program) samples. DNC has carefully examined the data throughout the year and has presented in this section all cases where station related radioactivity could be detected.
The results are compared with previous environmental surveillance data.
Few impacts of the station operation on the environment were observed. Sub-sections contain a description of each particular media or potential exposure pathway. Naturally occurring nuclides such as Be-7, K-40, and Th-228 were detected in numerous samples. Be-7, which is produced by cosmic processes, was observed predominantly in airborne and vegetation samples. Th-228 results were variable and are generally at levels higher than plant related radionuclides.
Cs-137 and Sr-90 were observed at levels similar to those of past years. The levels of Cs-137 aFd Sr-90 detected were the result of atmospheric nuclear weapons testing in the 1960'1" 4.1 Gamma Exposure Rate (Table 1)
Gamma exposure rate is determined from the integrated exposure measured over a calendar quarter using CaSO 4(Tm) Panasonic model UD-804 ASx thermoluminescent dosimeters (TLDs). In 2000, the TLDs (Victoreen glass bulb CaF 2(Mn)), which historically were used to measure radioactivity around Millstone for over 20 years, were replaced with the Panasonic TLDs.
The dosimeters are strategically placed at a number of on-site locations, as well as at inner and outer off-site locations. Starting in 2001, the collection of TLDs was changed from monthly to quarterly and additional measurement locations were incorporated into the REMP requirements listed in the REMODCM (Radiological Effluent Monitoring and Offsite Dose Calculation Manual - Reference 8). Three more locations were added in mid-2003 to prepare for monitoring the potential effect of ISFSI (Independent Spent Fuel Storage Installation - Dry Cask Storage). Two Dry Cask Containers were loaded in the first quarter 2005. Three containers were loaded in mid 2006, three in October 2007 and three in April 2009. None were loaded in 2008. The exposure rate measurements at these three additional TLD locations remain basically unchanged from the background measurements performed prior to any cask loading (six quarter background average mid 2003 - 2004: 9.5 uR/hour at location 73X, 7.6 uR/hour at location 74X and 6.9 uR/hour at location 75X).
Table 1 lists the exposure rate measurements for all 44 monitored locations. Trends similar to those of past years are apparent. These measurements demonstrate the general variations in background radiation between the various on-site and off-site locations and include gamma exposure from all sources of radioactivity. For example, the Weather Shack (location 02), MP3 Discharge (location 05), Environmental Laboratory (location 08), Bay Point Beach (location 09), Pleasure Beach (location 10), Corey Road (location 48), and Site Switchyard Fence (location 73) experience higher exposure rates due to their proximity to granite beds and stonewalls. In addition, the Mystic (location 13C) and Ledyard (location 14C) control locations experience relatively higher background exposure rate than the other control locations at Fisher's Island, Norwich and Old Lyme (locations 12C, 15C and 16C).
The only appreciable effect seen in the recent TLD data is that attributable to the variation in the background radiation that is consistent with previous years.
4-1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Figure 4.1-1 shows a historical trend of TLD exposure rate measurements, comparing an annual average of all indicator TLDs, an annual average of all control TLDs, and the annual average of the two most critical indicator locations which are used to represent the two closest site boundary residences in the North-northwest and Northeast directions.
Examination of the average measurements since 1990, shows interesting site changes and site characteristics. For example, the average of all indicator locations for the period when Unit 1 was still in operation (through 1995) display the effects of N-16 BWR turbine building sky-shine to immediate areas onsite. As discussed in previous annual reports, the effects of sky-shine at onsite monitoring stations were increased exposure rates as high as 6 uR/hr at certain onsite locations. The elevated exposure rates from sky-shine decreased rapidly with distance to levels indistinguishable from normal background measurements at even the nearest offsite monitoring stations. Also apparent in Figure 4.1-1 is the replacement of the historical Victoreen TLD monitoring system with the Panasonic system in year 2000. The difference in response between the two systems is very apparent, with the new Panasonic TLDs reading 15% to 20% lower. This lower respo se is consistent for all locations, including both indicator and control locations.
The figure also relates the difference in critical indicator locations 1 and 3 and the annual average of all indicator TLDs to the annual average of the control TLDs collected and measured during coincident periods throughout the year. As discussed earlier, the exposure measurements of many indicator locations onsite (and two of the control locations) are influenced by natural background exposure differences caused by the many granite out-croppings typical of the local area. Figure 4.1-1 shows the annual average at indicator location 1 is slightly higher in gamma exposure rate than the average control gamma exposure rate. An opposite trend is shown for location 3. These differences are the result of the differences in granite at these locations. Location 3 was moved in the second quarter to minimize the effect of tree covering for the air sampler also located at this location. The 2009 data for location 3 shows an increase likely attributable to the being closer to granite at the new location.
In 2005 and 2006, there was a small increase noted at locations 5 and 8 caused by storage of the Unit 2 replaced reactor head. As expected, this increase exhibited a decreasing trend because of radioactive decay. The head was shipped offsite for disposal in the fourth quarter 2006; the measured levels at these two locations have returned to the background levels measured prior to the head being placed in the storage area. Although not measurable, any resulting site boundary doses are bounded by dose rates from the radwaste storage areas and are discussed in Section 5.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Figure 4.1-1 uR/hr Historical Annual Gamma Exposure Rate 10 MAIl Indicators 13]I Controls 01~ndicator Loc 1 11111ndicatlor Loc 3 N
101 4.2 Air Particulate Gross Beta Radioactivity (Table 2)
Air is continuously sampled at seven inner ring (0 to 2 miles) locations and one control location (14 miles N) by passing it through glass fiber particulate filters. These samples are collected weekly and analyzed for gross beta radioactivity. Results are shown on Figure 4.2-1 and Table 2. Gross beta activity remained at levels similar to that seen over the last decade. Inner and control monitoring locations continue to show no significant variation in measured activities (see Figure 4.2-2). This indicates that any station contribution is not measurable.
Figure 4.2-1 Air Particulate Gross Beta Activity pCi/m3 Monthly Averages - 2009 1.03 0.03-I-IndicatorsI 1 Control 0.031 0.025-0.02-0.015 0.01.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 4-3
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Figure 4.2-2 Air Particulate Gross Beta Activity pO/m3 Monthly Averages - 5 Year Trend 0.035 0.03 0.025 0.02 0.015 0.01 26>.
(71 - m - Cn 4.3 Airborne Iodine (Table 3)
Charcoal cartridges are included at all of the air particulate monitoring stations for the collection of atmospheric iodine. These cartridges are analyzed on a weekly basis for 1-131.
No detectable levels of 1-131 were seen in the 2009 charcoal samples.
4.4 Air Particulate Gamma (Table 4A-D)
The air particulate samples that are utilized for the weekly gross beta analyses are composited quarterly and analyzed for gamma emitting isotopes. The results, as shown in Tables 4A - 4D, indicate the presence of naturally occurring Be-7, which is produced by cosmic radiation. No other positive results are seen. These analyses indicate the lack of station effects.
4.5 Air Particulate Strontium (Table 5)
Prior to 1989 Table 5 was used for listing the data for measurements of Sr-89 and Sr-90 in quarterly composite air particulate filters. The historical data indicated the lack of any detectable station related activity. Since these analyses are not listed in NUREG 1301 (Reference 15), these measurements were discontinued. In the event of widespread station related contamination or other unusual events (such as the 1986 Chernobyl incident), these measurements could be made. Historically, when world events created conditions that caused detectable measurements of these nuclides, there was no difference noted between indicator and control locations. This further confirms that any of the detectable levels for these nuclides were not plant related.
4-4
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 4.6 Soil (Table 6)
Millstone resumed collection of soil as a required media type in 2001. Prior to 2001, it had not been sampled for over fifteen years. These samples were discontinued due to the fact that, previous sample results never indicated any station related detectable activity.
Similarly, since 2001, no station detectable activity has been seen in these samples. The results of these samples, allows for the determination of baseline activity levels in soil. This is particularly important for Cs-1 37, since significant levels from past weapons testing fallout remain in the soil. Baseline levels should be useful in the future, when site characterization and decommissioning of the station become the focus during preparations for License termination. This media is collected annually from one control and two indicator locations.
4.7 Cow Milk (Table 7)
Typically, the most sensitive indicator of fission product existen e in the terrestrial environment is the radiological analysis of milk samples. Milk is a widely consumed food, therefore it is usually one of the most critical exposure pathways. Since 1996 all dairy (cow) farms close enough to Millstone to be considered an indicator location (i.e. conservatively within 10 miles, reference 15 specifies within 5 miles) have ceased operation. Therefore, the sampling of cow milk has been discontinued until such time dairy activities in the nearby area resume. Each year the Land Use Census is used to identify locations of milk animals that should be included in the monitoring program. It is performed annually and is maintained by observations, door-to-door surveys and consulting with local agriculture authorities. The 2009 census is listed in Appendix A. If a new dairy farm is identified close enough to Millstone to be considered an indicator location, the collection of cow milk will resume.
4.8 Goat Milk (Table 8)
When available, these samples are collected twice per month during grazing season and once per month during the rest of the year. Each sample is analyzed for 1-131 and gamma emitting nuclides. Although not required by the REMODCM, samples from each location are composited quarterly and analyzed for Strontium.
Goat milk samples are typically a more sensitive indicator of fission products in the terrestrial environment than cow milk samples. It should be noted that the uptake of radionuclides in milk is dependent on a number of parameters. These include: metabolism of these animals, feeding habits, farming practices and feed type. Similar to previous years, Cs-1 37 and Sr-90 are observed in goat milk. During past weapons testing periods, samples taken at certain milk locations indicated higher uptake of fallout than others. This was especially apparent in past samples collected in the immediate area around Millstone (see previous Annual Operating Reports). One of these sites, located at 5.2 Mi. NNE of Millstone (previous location 22, sampled from 1994 through 2004), exhibited a trend of showing higher Sr-90 and Cs-1 37 concentrations than at some of the other locations (including ones located closer to Millstone). The Station and regulatory authorities (e.g., see Reference 17) have carefully reviewed past and present data. The presence of the Sr-90 and Cs-137 is the result of residual radioactivity deposited into the environment from the fallout of past nuclear weapons testing. The facts that lead to this conclusion are presented in Section 6.0. These facts include: effluent release totals for these isotopes show insufficient quantities to account for such measurements; Sr-89 and Cs-134 which are chemically similar and generally released in comparable quantities were not detected, and a trend since the early 1960's that shows a consistent declining presence of Cs-137 and Sr-90 in milk from Connecticut.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 The 2009 results indicate no detectable 1-131 in this media. In the 1970's and 1980's low levels of plant related 1-131 were seen in some of these samples. However, for over 19 years, no plant related detectable levels of 1-131 have been seen in goat milk samples. The only other occasions where 1-131 was detected were fallout episodes from the Chinese Weapons Tests of the mid to late 1970's and Chernobyl Accident in 1986.
Goat milk was unavailable at all locations both early and later in the year. Per requirements, pasture grass or feed is collected as a substitute when milk is not available (see 4.9. Pasture Grass and Feed).
4.9 Pasture Grass and Feed (Table 9)
When the routine milk samples are unavailable, samples of pasture grass are required as a replacement. These samples may also be taken to further investigate the levels of radioactivity ip milk. During the winter months and early spring, insufficient growth often prohibits sampling of pasture grass. Feed (e.g., hay or grain) is typically sampled whenever pasture grass is not available.
No station effects are noted in these samples. Cosmic produced Be-7 was observed in the majority of the pasture grass samples and many of the hay samples. Due to its relatively short half-life (52 days), it was not detected in the several of the "older" hay samples.
Naturally occurring K-40 was approximately two times higher in hay compared to pasture grass samples. Similar to goat milk, the Cs-1 37 values at the indicator and control locations are comparable. This provides an indication that the levels observed are the result of residual fallout from weapons testing.
4.10 Well Water (Table 10)
These samples were discontinued in 1985, because no detectable station activity was ever observed in these samples. However, based upon lessons learned at other nuclear plants, including several undergoing decommissioning, sampling was resumed at several locations starting in the fourth quarter 2003. Three additional locations were added in 2005 to monitor potential leakage from the ISFSl. Due to the heightened sensitivity on this potential pathway, three more locations were added in 2006 and five more in the summer of 2008.
One of these new wells, location 86 (GPI 6 - inside the Unit 3 RCA between the Boron and Waste Test Tank berm and the Fuel Building) indicated a positive tritium result (2310 +/- 250 pCi/liter) on August 28, 2008. This was the first sample from this new well. The temporary well located nearby also indicated positive levels (see 2008 Annual Radiological Environmental Operating Report and the 2008 Radiological Effluent Report) due to penetrations in the berm and a leaky pressure gauge for one of the Boron Recovery Tanks.
The penetrations have been sealed and the pressure gauge repaired. The H-3 levels have since become undetectable at this location. These positive levels were localized and transitory in nature; they were not indicative of any contamination in any drinking water supplies. Consistent with the past data, there were- no other incidents of any station activity detected in these samples.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 4.11 Reservoir Water (Table 11)
Reservoir water samples are special samples not required by the REMP. Previous data has shown the lack of detectable station activity in this media. This fact and the extremely unlikely possibility of observing routine station effluents in this media have resulted in discontinuing these samples. In the event of widespread station related contamination, these samples may be collected.
4.12 Fruits and Vegetables (Table 12)
Consistent with past years, this media did not show any station effects. Naturally occurring K-40 was detected in all samples.
4.13 Broad Leaf Vegetation (Table 13)
Consistent with past years, this media did not show any static n effects. Most samples had detectable levels of cosmic produced Be-7, at levels consistent with previous years.
This media can be an early and sensitive indicator of releases from the station for both unplanned releases and normal operations. Therefore, to enhance program-monitoring effectiveness, samples of broadleaf vegetation are collected monthly during the growing season, May - October, even though requirements are to collect this media twice a year.
4.14 Seawater (Table 14)
The guidance in Reference 15 specifies one sample upstream (control - beyond significant influence of the discharge) and one sample downstream (indicator - beyond but near the mixing zone) for surface water samples. Historically the downstream sample for Millstone has been located in the vicinity of discharge (location 32 - see Reference 8) which is prior to the mixing zone. This location was chosen since it was readily accessible by power and not affected by cold weather conditions. Operation of an automatic sampler at the indicator location is necessary for providing a representative sample. Although samples obtained at this location actually monitor the undiluted discharge activity, it provides for an excellent check on the effluent monitoring program. Any dose consequences can be assessed by use of the appropriate dilution factors. It's not as important to have a continuous sampler at the control location due to the relative consistency noted in seawater background activity near the Millstone Site.
A technician collects an aliquot from the automatic sampler at Location 32 on a weekly frequency. These samples are composited for monthly analyses. In September 1999, Millstone increased the required analysis frequency for this composite sample to monthly to increase monitoring effectiveness. For the Control Location, Giant's Neck (Location 37C),
six weekly grab samples are obtained for quarterly compositing. In 2003, the LLD for H-3 (tritium) at the indicator location (32) was lowered by approximately a factor of four to further enhance monitoring effectiveness. This lower LLD was continued through 2009.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Naturally occurring K-40 was the only detectable gamma activity seen in several of these samples. Measured plant related levels of H-3 inseawater from the immediate vicinity of discharge (location 32) were observed in 4 of the 12 samples. This is similar to the frequency observed in 2007 and less than in 2008. Only Unit 2 experienced a refueling outages in 2009 and tritium releases are typically higher near these outages (due to the need for increased liquid processing during these times). As mentioned above, these samples are taken directly from liquid effluent flow prior to dilution into the Long Island Sound. Dilution studies performed for this discharge have determined that a dilution factor of 3 is appropriate to estimate concentrations immediately outside the quarry within a near-field area.
Tritium builds up in the reactor coolant during each fuel cycle. It is generated during plant operation from fission and neutron reactions. Between 1992 and 2002, H-3 was not typically detected. However, due to the enhanced detection sensitivity, H-3 levels are now often detected at the indicator location. Figure 4.14-1 shows a seventeen-year trend of H-3 relepses in the Millstone liquid effluents versus the measured environmental concentrations fro rr the vicinity of discharge location.
Sampling "undiluted discharge water" and analyzing to a "low H-3 LLD" enables a direct comparison of effluent monitoring to environmental monitoring for this exposure pathway.
Figure 4.14-2 (one year trend) and Figure 4.14-3 (four year trend) show this comparison.
This comparison is more accurate than Figure 4.1-1 since it takes into account the dilution flow during each month. Dilution flow can change substantially during plant outages. By plotting the data monthly, the resolution of the comparison is further enhanced, although there can be slight discrepancies due to the REMP sample not necessarily being on the last day of each month.
Figure 4.14-1 H-3 Curies Released versus Seawater Concentration 17 Year Trend 1700, 1600 -.- Cures discharged 1500-1400 REMP pCi/liter 1300-1200 .
1100 1000-900 800 M I Ak T 700-i$ ITI M /
600
/\ IooI 1'I\lA 7k 1 I1 im 1 \11I II IFI I A 500 / A1 "7RrT1 11 1 400Of1? / RW 1 11 4\ 1 t &IIo 300 l
200 100 0 *...*... 8O9S 4-8
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Figure 4.14-2 Seawater - H-3 Concentration
. I..-V In*
Fn-nf k4 -n l 2600- ... ..... .. . .
2400 2200 2000 - REMP Samples 1800 Effluent Measurements
- .1600
- 1400 1200 1000 800 600-200 F raAO o Jan Feb Mar Apr May Jun Aug Sep Oct Nov Doc Figure 4.14-3 Seawater H-3 Concentration REMP Samples vs Effluent Measurements - 5 Year Trend 3000-2800-- REMP Samples 2600-3-- Effluent Measurements 2400--
2200-2000-1800 1800-1200-1000-600 A 400 200 0
C,, 4 U.%
4-9
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 4.15 Bottom Sediment (Table 15)
Cs-137 was at positive levels in both samples from Golden Spur (67X); one detectable and the other just below the cutoff of 3 standard deviations. This is typical for this location, since it is a fresh water area. The levels of Cs-137 at this location are comparable to those observed in past river water sediments taken from other fresh water areas (e.g., the Connecticut River). Because of the relative distance and direction of the Golden Spur location from the station and comparable levels seen the more distant river water locations, the Cs-1 37 detected at Golden Spur is from weapons testing fallout.
Although in previous years Cs-137 was also detected in the extra samples from Jordon Cove Bar (39X), this year the levels have decreased below detectable. The previous low levels likely exhibit some effect of the fresh water drainage from Jordan Brook.
Similar to 2009, Co-60 was noted in the samples from Jordan Cove Bar at levels just below detectable. The levels for 2008 and 2009 show a decreasing trend from the somewhat higher levels noted in 2004 - 2006. Present levels of Co-60 are similar to those seen in 2003. Prior to 2003, plant related activity had not been detected in bottom sediment for over a decade. Bottom sediment is not a significant dose pathway to man, especially at areas not typically used by the public. Examinations of other aquatic media, including seafood, sampled from near these locations (discussions that follow) do not show any detectable Co-60 or Cs-1 37.
A new sediment location was added in 2006 near the closest public beach (location 69X).
The data for this location has not indicated any plant related activity 4.16 Aquatic Flora (Table 16)
Although sampling of this media is not required, it provides useful information since it a very sensitive indicator of radioactivity in the environment. Low levels of activity (e.g., Mn-54, Co-58, Co-60, Zn-65, 1-131 and Ag-1 1Om) have been detected in the past. Since 2000, levels have decreased to undetectable for all nuclides except for 1-131. One positive 1-131 measurement was noted in 2004 and 2007, several in 2005 and in 2006 and two in 2008.
The 1-131 levels noted in 2004 through 2008 have been determined to be caused by medical usage. Seaweed has a significant bioaccumulation factor for iodine which makes it an extremely sensitive indicator of iodine in the environment.
Due to the initial positive 1-131 indications in 2004 and 2005, additional monitoring and studies were conducted in 2006. Extra samples were obtained at Thames River and Rocky Neck to determine if there may have been other sources for these very low levels of 1-131.
These extra samples indicated the most likely cause for the 2004 - 2008 positive 1-131 results was the outfall from nearby wastewater (sewage) treatment plants. The usage of I-131 in medical treatments is becoming more common and it is not unusual for it to be in the wastewater. The New London Waste Water Treatment Plant is located on the west side of the Thames River near Fort Trumbull. Groton has two wastewater treatment plants, one located across the Thames River (and slightly upstream) from the New London treatment plant and the other near Bluff Point. The highest 1-131 results were in the samples from within the Thames River, which were taken near the outfall from the New London Waste Water Treatment Plant. There was no other activity detected in the flora samples.
Therefore, no Station related radioactivity was detected in aquatic flora since 2000.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 4.17 Fish (Tables 17A and 17B) 4.17.1 Flounder (Table 17A)
The activity in Flounder is the same as that seen for the past decade. No activity was observed except for the naturally occurring nuclides.
4.17.2 Fish - Other (Table 17B)
The activity in other fish is the same as that seen for the past decade. No activity was observed in this media except for naturally occurring nuclides, including samples taken from within the quarry.
4.18 Mussels (Table 18)
Similar to the last several years, this samplin media showed no station related radioactivity at all locations.
4.19 Oysters (Table 19)
All locations utilize oysters stocked in trays. The oysters used for stocking these trays have been obtained from Ram Island for the last several years. To confirm that the stocked oysters are not initially contaminated, the oysters from Ram Island are also analyzed. The stocked trays are kept at most of the sampling areas to guarantee samples and facilitate sample collection. Historically, native oysters were sampled at the quarry (location 40X),
which was an extra location. Due to safety concerns about diving operations, sampling at location 40X was suspended after the 2 nd quarter 2007 samples. Similarly, due to other safety concerns, location 32 was moved to a more accessible area in the middle of the quarry. Although it is labeled as vicinity of the discharge, it was previously located at the end of the quarry.
No station related activity was observed in any of the samples. Station related Ag-I 10m has typically been detected in samples from location 32. This year, the levels have decreased below the detectable levels.
For several previous years, high levels of Zn-65 were observed in oysters. This was caused by their high capacity for accumulating zinc. Studies have shown that oysters can accumulate as much as 50 times or more the amount of zinc compared to most other seafood (Wolfe, 1979). A remarkable correlation existed between the Zn-65 concentration measured in the native quarry oysters and the amount of Zn-65 discharged into the environment. However, since the permanent shutdown of Millstone Unit 1 in 1996, the amount of Zn-65 in liquid effluents has decreased significantly. Starting in 2001, no Zn-65 has been detected in either the liquid effluents or in oysters. Figure 4.19-1, shows a historical trend that existed between Zn-65 releases and measured concentrations in quarry oysters.
The decreasing trend in effluent radioactive releases is apparent in both the curies released and the measured concentrations in oysters.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Figure 4.19-2 shows the trend of Ag-I 1Gm concentration in quarry oysters compared to the liquid effluents discharged. Similar to Zn-65, the correlation between Ag-I 10m discharged and the Ag-i 1Om concentration measured in the native quarry oysters is apparent. Section 5 provides for a comparison of doses based upon effluent measurements (method 1) to doses based upon environmental measurements (method 2). Per regulatory guidance (reference 7), the bioaccumulation factors for both Zn and Ag were adjusted based upon several years of historical data to account for the higher measured uptakes. These adjustments have typically shown good agreement between the two methods, with method 1 usually being conservative. The 2006 and 2007 data indicate an unusual trend (see Section 5, Table 5-2). Method 2 (REMP dose assessment) indicates higher doses than method 1 (effluent dose assessment). Due to significant effluent reductions over the last several years, the low resulting doses (less than 0.01 mrem) make this comparison difficult and subject to significant error. Trending of these comparisons is routinely performed and adjustments are made, if appropriate.
The location of the quarry is on-site and not available for public use. No station activity was observed at locations beyond the station discharge area. Therefore, the actual concentration of the nuclides in oysters available for public consumption is much less than the levels found inside the quarry. The near-field dilution factor for liquid discharges from the Millstone quarry discharge is a factor of 3. The dose consequence of the station related radioactivity via this pathway is discussed in Section 5.0.
4.20 Clams (Table 20)
Occasionally this media indicates the presence of station related radioactivity. No station related radioactivity was observed in any of the clam samples taken in 2009.
4.21 Scallops (Table 21)
Scallops are not required by the REMP. However, attempts are made to sample this media to confirm station effects because scallops could be available for public consumption. No scallop samples have been available for several years.
4.22 Lobsters (Table 22)
Like the last several years, no station related radioactivity was detected in this sample media in 2009.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Figure 4.19-1 Zn-65 COMPARISON Curies Curies Discharged vs. Native Oyster Concentration pCilgram 0.1 100 o-.4--Curies Discharged 1 0.01 OysterConc. .10 0.001 1 0.0001 0.1 0.00001 0.01 0.000001 ...... - 0.001 Quarter Figure 4.19-2 Ag-110m COMPARISON Curies Curies Discharged vs. Native* Oyster Concentration pCilgram 0.1 100 C---
Curies Discharged 0.01 Oyster Conc.
0.001 1 0.0001 WId R 0.1 0.00001 0.01 0.000001 0 0001
.0 M W O M 0 N M 0 0 0 0 0M 00 D 0 0 a) 00 Quarter
- Native oysters until 3Q 2007; because of diver safety issues now the only oysters sampled in the Quarry are stocked in trays similar to what has historically been performed at all the other locations.
4-13
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009
- 5. OFFSITE DOSE EQUIVALENT COMMITMENTS The off-site dose consequences (dose equivalent commitments) of the station's radioactive liquid and airborne effluents have been evaluated using two methods.
The first method utilizes calculations of direct dose from sources onsite and the station's measured radioactive discharges as input parameters into conservative models to simulate the transport mechanism through the environment to man. This results in the calculation of the maximum dose consequences to individuals. The results of these computations have been submitted to the NRC in the Radioactive Effluent Release Report written in accordance with the Radiological Effluent Monitoring and Offsite Site Calculation Manual,Section I.F.2. This method, which is usually conservative (i.e., computes higher doses than that which actually occur), has the advantage of approximating an upper bound to the dose consequences. This is important in those cases where the actual dose consequence cannot be measured because they are so small as to be well below the capabilities of conventional monitoring techniques.
The second method utilizes the actual measurements of the concentrations of radioactifrity in various environmental media (e.g., fish, shellfish) and then computes the dose conseq ences resulting from the consumption of these foods. `
The results of both methods are compared in Table 5.1 for those pathways where a potential dose consequence exists and a comparison is possible. The doses presented in this table are calculated at the location of maximum effect from the station effluents for that pathway and for the critical age group. For example, the external gamma dose from gaseous effluents is calculated for the site boundary location which is not only the nearest but also has the greatest directional wind frequency and fish and shellfish doses are calculated assuming they are from an area within 500 feet of the station discharge.
Summarizing the data in Table 5.1:
MAXIMUM TOTAL INDIVIDUAL DOSES: WHOLE BODY = 0.20 mrem GI(LLI) = 0.040 mrem Thyroid = 0.015 mrem The majority of the whole body dose is due to a conservative determination of dose (=0.1 8 mrem) to the nearest resident as a result of direct radiation from on-site radioactive waste operation/storage facilities and continuous occupancy. The GI(LLI) (gastro-intestinal tract, lower large intestine) dose is essentially all attributable to the liquid pathway based upon Method 2. The thyroid dose is based upon conservative assessments using Method 1. Since the maximum dose consequence to an individual is at the location of highest dose consequence, doses will be less for all other locations.
The average whole body dose to an individual within 50 miles historically is on the order of 1000 times less than the maximum individual whole body dose.
In order to provide perspective on the doses in Table 5.1, the standards on the allowable maximum dose to an individual of the general public are given in 40CFR190 as 25 mrem whole body, 75 mrem thyroid, and 25 mrem to any other organ. These standards are a fraction of the normal background radiation dose of approximately 311 mrem per year and are designed to be inconsequential in regard to public health and safety. Since station related doses are even a smaller fraction of natural background, they have insignificant public health consequences. In fact, the station related doses to the maximum individual are less than 10% of the variation in natural background.
5-1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 TABLE 5.1 COMPARISON OF DOSE CALCULATION METHODS MILLSTONE POWER STATION 2009 Annual Dose (millirem)
-Methodi (10)
Pathway Individual Organ Unit 2- Unit 3 Station (BWR)I (PWR) (PWR) Total Airborne Effluents
- 1. External Gamma Dose Max 2( ) Whole Body 0.0000 0.00255 0.00018 0.0027 (gamma air)(8 )
- 2. Whole Body Dose Max 2( ) Whole Body 0.00021 0.0072 0.00062 0.014 (internal and external)
- 3. Inhalation, vegetables and Max 2( ) Thyroid 0.00020 0.0089 0.0062 0.015 goat milk
- 4. Inhalation, vegetables and Max (2 ) Max Organ 0.00025 0.0073 0.0062 0.014 goat milk Direct Dose Nearest Residence Whole Body N/A N/A N/A 5-2
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 TABLE 5.1 (Cont.)
COMPARISON OF DOSE CALCULATION METHODS MILLSTONE POWER STATION 2009 Annual Dose (millirem)
Max~ Metho Method 2.,)
Pathway Individual_ Ui Unit 2 UOga Unt3Station Station
________ ______ (WR) (PR)(WR) Toftal Liquid Effluents Adult Whole Body 0.00000009 0.000333 0.000221 0.000555 ND(3)
- 1. Fish Teen 0.00000005 0.000308 0.000179 0.000487 Child 0.00000002 0.000329 0.000160 0.000489 Adult GI(LLI)(6) 0.00000000 0.003808 0.000781 0.00459 ND Teen 0.00000000 0.002730 0.000564 0.00330 Child 0.00000000 0.001043 0.000266 0.00131 Adult Liver 0.00000013 0.000769 0.000295 0.00107 ND
" Teen 0.00000014 0.000774 0.000261 0.00104 Child 0.00000013 0.000720 0.000232 0.00095 Adult Whole Body 0.00000001 0.000347 0.000106 0.000454 ND(7 )
- 2. Shellfish
- Teen 0.00000001 0.000355 0.000099 0.000453 ND Child 0.00000000 0.000433 0.000109 0.000542 ND
" Adult GI(LLI) 0.00000000 0.003869 0.001408 0.00528 ND Teen 0.00000000 0.002744 0.000981 0.00373 ND Child 0.00000000 0.001008 0.000171 0.00138 ND Adult Liver 0.00000002 0.001023 0.000211 0.00123 ND
- Teen 0.00000002 0.001072 0.000211 0.00128 ND Child 0.00000002 0.001049 0.000207 0.00126 ND 5-3
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Notes:
- 1. Except for direct dose, method 1 uses measured station discharges and meteorological data as input parameters to transport-to-man models that conservatively calculate dose to people; method 2 uses actual measured concentrations in environmental media to estimate the dose.
- 2. Maximum individual - The maximum individual dose is the dose to the most critical age group at the location of maximum concentration of station related activity. The dose to the average individual is much less than the maximum individual dose.
- 3. ND - Not Detectable - No station related activity could be detected above natural background or above the minimum detectable level (MDL).
- 4. The dominant source of direct dose from the station is from storage and movement of radioactive waste. Storage of radioactive waste is allowed in several areas onsite.
Operation of the storage facilities is limited by design to ensure that the maximum direct dose at the site boundary from each area does not exceed one millirem. Actual exposure throughout the year was maintained much less than this operational limit.
Each facility is monitored onsite by the Radiation Protection Department using TLDs.
The exposure ineasured for each facility TLD was corrected for distance to the nearest site boundary rosidence. The resultant exposure was conservatively multiplied by 1.5 to account for skyshine. These maximum estimated doses from each facility were summed for a cumulative site commitment of approximately 0.18 millirem. The whole body dose from airborne effluents was 0.014 and from liquid effluents was 0.0015 (seafood consumption, swimming & boating and shoreline recreation dose total). This results in a total estimated whole body dose to the maximum individual of 0.20 mrem (0.18 + 0.014 +
0.0015).
- 5. Measured dose was derived from monthly TLD readings. There are two residences that qualify as the closest residence; each has a TLD near enough to use as an estimate to each residence. The one with the highest average dose rate was used to estimate the direct dose to the closest residence. A background dose rate was subtracted. This background was derived from the average of the five control TLD locations. This method is very conservative assuming natural exposure influences, such as granite, are actually plant related exposure. This method provides a bounding high value. The exposure measurements of the select indicator locations are influenced by natural background exposure differences caused by the many granite out-croppings typical of the Millstone area. Historical data has shown that TLD sample locations in the vicinity of granite can be dramatically influenced by natural radioactivity contained within the granite.
- 6. GI (LLI) - Gastrointestinal Tract - Lower Large Intestine.
- 7. Based on measured levels in the native quarry oysters. A measured near field dilution factor of 3 was used to adjust for the fact that these oysters are on-site and inaccessible to the public. This factor adjusts the measured on-site concentration to that which could occur to a public accessible off-site location after dilution of the effluent by the Long Island Sound. The measured levels in the stocked oysters within the quarry were about one-half the native quarry oysters. For conservatism, it was assumed the maximum individual consumed primarily oysters (activity in clams was much lower than in the oysters).
- 8. Based upon the conservatively assuming no correction for building shielding and occupancy.
5-4
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Repott Millstone Station 2009
- 6. DISCUSSION The evaluation of the effects of station operation on the environment requires the careful consideration of many factors. Those factors depend upon the media being affected. They include station release rates, effluent dispersion, occurrence of nuclear weapons tests, seasonal variability of fallout, local environment, and locational variability of fallout.
Additional factors affecting the uptake of radionuclides in milk include soil conditions (mineral content, pH, etc.), quality of fertilization, quality of land management (e.g., irrigation),
pasturing habits of animals, and type of pasturage. Any of these factors could cause significant variations in the measured radioactivity. A failure to consider these factors could cause erroneous conclusions.
Consider, for example, the problem of deciphering the effect of station releases on the radioactivity measured in milk samples. This is an important issue because this product is widely consumed and several fission products readily concentrate in this media. Some of these fission products, such as 1-131 and Sr-89 are relatively short-lived. Therefore they can result from station effluents, nuclear weapons tests or n clear incidents (e.g. Chernobyl).
Sr-89's lifetime is longer than 1-1 31's, therefore it will rema n around for much longer periods of time. The even longer-lived fission products, Sr-90 and Cs-137, cause more of a concern.
These isotopes are still remaining from the weapons testing era of the 1960's. This results in measurable amounts of Sr-90 and Cs-137 appearing in some milk samples.
Distinguishing between this "background" of fallout activity and station effects is of prime interest for a Radiological Environmental Monitoring Program.
In reviewing the historical and present Sr-90 and Cs-137 measured in cow and goat milk in the areas around Millstone station, a casual observer could notice that in some cases the levels of these isotopes are higher at farms closer to the station than at those further away from the station. The station's effluents might at first appear to be responsible. However, the investigation of the following facts proves this conclusion wrong.
(1) The stations accurately measure many fission products, including Sr-90 and Cs-137 in their releases. Based on these measurements and proven models developed by the Nuclear Regulatory Commission, concentrations in the environment can be calculated.
These calculations (generally conservative, see Section 5.0) show that insufficient quantities of Sr-90 and Cs-1 37 have been released from the plants to yield the measured concentrations in milk.
(2) Over the many years of station operation, Sr-89 has often been released in comparable quantity to Sr-90. Since they are chemically similar, comparable levels should have been detected in milk if the Sr-90 was station related. No station related Sr-89 has ever been detected in milk samples.
(3) Similar to Sr-89, Cs-134 can be used as an indication of station related Cs-137.
Although not as conclusive as Sr-89, the lack of any measurable Cs-134 in any of the milk samples suggests that the Cs-1 37 is not station related. This is further confirmed by the evaluation of the air particulate data. The only occurrences of detectable Cs-134 in milk resulted from the Chernobyl incident.
(4) Dairy milk sampling in Connecticut began in the 1960's, several years prior to nuclear station operation. The highest levels of weapons fallout related Sr-90 and Cs-137 (see Figures 6-1 and 6-2), were measured in the years prior to station operation. Samples taken in the immediate station areas have always shown higher levels of weapons related fallout than samples taken from the Central Connecticut Region (CT Pooled Milk).
Radioactivity levels of fallout related Sr-90 and Cs-137 have decreased significantly since the 1964 Nuclear Test Ban Treaty due to decay.
6-1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 (5) Local variability of Sr-90 and Cs-137 in milk is common throughout the United States.
Due to the variability in soil conditions, pasturing methods, rainfall, etc., it is the rule rather than the exception. Therefore, it is not surprising that certain farms have higher levels of radioactivity than other farms. In fact, in the past there are some cases where the farms further from the station have higher Sr-90 and Cs-137 values than the farms that are closer to the station.
(6) In the past when a goat farm operated near Millstone (2.0 Mi - ENE), the highest levels of Sr-90 and Cs-137 were typically indicated. This same farm also experienced the highest levels of short-lived activity from the 1976 and 1977 Chinese Tests and the 1986 Chernobyl accident. This indicates that for some unknown reason this farm had the ability for higher reconcentration. Special studies performed at this and other farms failed to find any link to the station.
Based on these facts, the observation that the station effluents are' responsible is evidently false. The cause must be one or more of the other variables.
Dominion has carefully examined the data throughout the years and h s presented in this report all cases where station related radioactivity could be detected. An analysis of the potential exposure to the maximum individual from any station related activity has been performed and shows that in all cases the exposure is insignificant.
The Connecticut Department of Environmental Protection (DEP) performs an independent check on certain environmental program analyses. The results of their analyses are comparable to the results from this program's analyses. These comparisons can be used as a cross-reference to verify measured station activity. DEP performed a comprehensive review of all the historical Millstone data in 2006 (reference 17). It concluded that "the collective sampling in and around Millstone Power Station show expected levels of residual fallout from weapons testing and the Chernobyl event and are unrelated to the operation of the Millstone Power Station."
Figure 6-1 Strontium-90 in Milk p0/liter 25 0CT Pooled M~tk 20 0 Haddam area I~k
& M I1stone area IMik 15.
15 10.
5 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 Year 6-2
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Figure 6-2 Cesium-137 in Milk Vi/liter 140 -- CT Pooled Milk 120 Haddam area Milk 100 A Millstone area Milk 80 60 40.
20;p 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 Year Dairy milk is no longer available in the Millstone area, Haddam Neck no longer collects milk, and CT Pooled milk has not been collected by the State of CT since 1994. Graphs provided to show historical trends.
CY Start-up occurred: July 24, 1967 MP2 Start-up occurred: December, 1975 MPI Start-up occurred: October 26, 1970 MP3 Start-up occurred: January 23, 1986 6-3
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009
- 7. REFERENCES
- 1) United States of America, Code of Federal Regulations, Title 10, Part 50, Appendix A Criteria 64.
- 2) Donald T. Oakley, "Natural Radiation Exposure in the United States." U. S.
Environmental Protection Agency, ORP/SID 72-1, June 1972.
- 3) National Council on Radiation Protection and Measurements, Report No. 160, "Ionizing Radiation Exposures of the Population of the United States," March 2009.
- 4) National Council on Radiation Protection and Measurements, Report No. 94, "Exposure of the Population of the United States and Canada from Natural Background Radiation,"
December 1987.
- 5) United States Nuclear Regulatory Commission, Regulatory Guide 8.29, "Instructions Concerning Risks from Occupational Radiation Exposure," Revision 0, July 1981.
- 6) Millstone Training Brochure.
- 7) United States Nuclear Regulatory Commission, Regulatory Guide 1.109, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I," Revision 1, October 1977.
- 8) Millstone Power Station Radiological Effluent Monitoring and Offsite Dose Calculation Manual, Revision 025-02, December 2006.
- 9) United States of America, Code of Federal Regulations, Title 10, Part 20.1301.
- 10) United States of America, Code of Federal Regulations, Title 10, Part 50, Appendix I.
- 11) United States of America, Code of Federal Regulations, Title 40, Part 190.
- 12) United States Nuclear Regulatory Commission, Regulatory Guide 4.1, "Program for Monitoring Radioactivity in the Environs of Nuclear Power Plants," Revision 1, April 1975.
- 13) ICN/Tracerlab, "Millstone Nuclear Power Station Pre-operational Environmental Radiation Survey Program, Quarterly Reports," April 1967 to June 1970.
- 14) International Commission of Radiological Protection, Publication No. 43, "Principles of Monitoring for the Radiation Protection of the Population," May 1984.
- 15) United States Nuclear Regulatory Commission, NUREG-1301, "Offsite Dose Calculation Manual Guidance: Standard Radiological Effluent Controls for Pressurized Water Reactors," April 1991.
- 16) United States Nuclear Regulatory Commission, Branch Technical Position, "An Acceptable Radiological Environmental Monitoring Program," Revision 1, November 1979.
- 17) Reassessment of Millstone Power Station's Environmental Monitoring Data, Connecticut Department of Environmental Protection, Division of Radiation, March 2006.
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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 APPENDIX A LAND USE CENSUS FOR 2009 A-1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 INTRODUCTION The annual land use census in the vicinity of Millstone Station was conducted as required by the Millstone REMODCM between July 15 and December 31, 2009. Typically the cow milk locations are identified by a review of the annual registration information obtained from the State of Connecticut Department of Agriculture. Gardens are located by a drive-by-during the harvest season. Although broadleaf sampling was performed and may be used in lieu of a garden census, gardens were included in the 2009 census. Only vegetable gardens having an area of more than 500 square feet need to be identified. Due to the difficulty of measuring individual gardens, the nearest garden within each directional sector identified by a drive-by survey is listed. Goat locations are more difficult to determine, but best efforts are made to consult goat association records, contact previous owners and or drive-bys, if necessary.
RESULTS Tables A-1 through A-3 indicate information from the latest land use census. No new dairy animals within 10 miles of the Station were located durin g the census. Several changes were identified, these include:
" several new dairies were identified in the 10 to 20 mile range (see Table A-i)
" closest garden in WNW moved from 2740 meters to 2910 meters These changes indicate that no changes were required in the current sampling locations.
The dose modeling incorporates the above listed changes.
A-2
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 TABLE A-1 Dairy Cows Within 20 miles of Millstone Point - 2009*
Direction Distance Location N 14 Miles Preston N 5 Miles Norwich N 20 Miles Norwich NNE 16 Miles Norwich NNE 16 Miles Preston NNE 16 Miles Preston NNE 17 Miles Preston NNE 18 Miles Preston NE 13.5 Miles Ledyard NE 14 Miles Ledyard NE 14.5 Miles Ledyard NE 18 Miles Preston NE 18 Miles North Stonington NE 19 Miles Preston NE 19 Miles North Stonington ENE 17.5 Miles North Stonington ENE 20 Miles North Stonington WNW 10.4 Miles Lyme NW 10.4 Miles Lyme NW 19 Miles East Haddam NNW 12.3 Miles Salem
- previous years the data included the number of cows at each location; this is no longer tracked in the census records Note: None of these cow farms are used for sampling since all farms are greater than ten miles from plant (NUREG 1301, Reference 15, uses a cutoff distance of 5 miles)
A-3
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 TABLE A-2 Dairy Goats Within 20 miles of Millstone Point- 2009 Direction Distance Location (Sample Location)
N 2.4 Miles Waterford (LOCATION 21)
N 11.5 Miles Oakdale NE 2.7 Miles Waterford (LOCATION 22)*
ENE 12 Miles Stonington ENE 13 Miles Stonington WNW 18 Miles Haddam NW 17 Miles East Haddam NNW 12.4 Miles Salem NNW 18 Miles Colchester NNW 21 Miles Colchester NNW 29 Miles Hebron (LOCATION 24)
- not milking, raised for meat only, pigs also at this location A-4
Dominion Nuclear Connecticut, Inc. Annual Radiologi cal Environmental Operating Report Millstone Station 2009 TABLE A-3
-2009 Resident/Garden Survey Distance to Distance to Downwind Closest Closest Direction Resident Garden (meters) (meters)
N 1500 1490 NNE 860 820 NE 790 840 ENE 1590 1590 E 1500 1670 ESE 1690 1990
SSW SW 3700 3840 WSW 3190 3210 W 2870 2950 WNW 2400 2910 NW 770 2180 NNW 740 1050
- N/A - not applicable (over water sectors)
A-5
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 APPENDIX B DNC QA PROGRAM B-1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 INTRODUCTION Dominion Nuclear Connecticut (DNC) maintains an independent non-required quality assurance (QA) program as part of the radiological environmental monitoring program (REMP). The QA program consists of contractor appraisals and quality control samples.
This independent program is applicable to all Dominion nuclear facilities because they share a joint contract with AREVA-NP Environmental Laboratory.
DNC QA PROGRAM The DNC independent QA Program includes spikes of various sample media and duplicate samples. Sample spikes are a check on the accuracy of results of the contractor's radioanalyses. Duplicate samples test the contractor's precision, or reproducibility of results, by comparing analytical results of split samples. The number and type of DNC QA Program quality control samples are defined in Millstone Nuclear Power Station Procedure REMP 1.4, "Quality Control of Radiological Environmental Monitoring Program." An investigation is conducted on any result or trend that does not satisfy acceptance criteria.
OTHER QA PROGRAMS The DNC Independent QA Program is not the (nly QA Program which monitors REMP radioanalysis performance. Other programs include:
- 1. Contractor lab's internal QA program. In addition to the Millstone quality control samples, the radioanalysis contractor has its own quality control samples. In total, at least five percent of the contractor's sample analyses include quality control samples.
- 2. Contractor lab's interlaboratory comparison program with an independent third party, Analytics, Inc. Results of the Analytics intercomparison are contained in Appendix C.
Primary contractor participation in an interlaboratory comparison program is required by station Technical Specifications. The Analytics comparison satisfies this requirement.
- 3. Contractor lab's participation in the National Institute of Standards and Technology (NIST)
Measurement Assurance Program (MAP), the Environmental Resource Associates (ERA)
Proficiency Test (PT) Program, the Department of Energy (DOE) Quality Assessment Program (QAP), and the Mixed Analyte performance Evaluation Program (MAPEP). The lab participates in these interlaboratory QA programs because of other clients' needs, not because of nuclear power station environmental sample analyses. However, some of these intercomparison samples are also applicable to nuclear power environmental samples.
RESULTS OF DNC QA PROGRAM FOR CONTRACTOR RADIOANALYSES Criteria for passing QA sample analysis is that the result be within 20% of the known spike except in the case of Sr-89 or Sr-90 spikes in milk which have to be within 30% of the known spike. To allow more tolerance for lower activity spikes the following alternate criterion may be used: If the two sigma error range of the analyzed result includes the known spike value the result passes.
B-2
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 Table 1 lists the numbers of QC and routine samples for various sample media for 2009.
The results of the QC samples are shown on Table 2. All of the TLD spike tests satisfied the procedural criteria. Of the 77 individual nuclide analysis results on QA samples, 67 passed the acceptance criteria, a 87 % success rate. Of the 10 failures, 5 were low by 27 - 34%
and 3 high by 22 - 28 %. The other two occurred in the two December water spikes. The fist spike was low by 96 % (-3.1 a) for Mn-54 due to a very low level spike; the other 4 nuclides were in agreement with the spiked values. The second spike was high by 355% for Cs-1 37 (+11.3 a); the other 4 nuclides were in agreement with the spiked values. Vendor's results are consistent with the State of Connecticut which had a split of this sample. This indicates a spiking problem with this sample. Based upon investigation of the results for these water spikes, small deviations for 8 of the failures and the relatively high acceptance rate, the Millstone QA Program indicated that the contractor lab's environmental radiological analysis program was adequate in 2009.
TABLE 1 2008 QUALITY CONTROL SAMPLES fSfPES (Not61")gj
~ ~~~~QSAMPLETP ROUTINE-TLD Spike 16 160 Milk - Strontium 2 6 Milk- Iodine 2 -30 Milk - Gamma (Note 2) -30 Pasture Grass/Hay- Gamma (Milk 0 -30 Substitute)
Water - Gamma 8 60 Water - Tritium 8 60 Fish/Invertebrate - Gamma 4 80 Vegetation/Aquatic Flora/Sediment/Soil- 0 74 Gamma Air Particulate - Gross Beta 5 416
- Iodine 2 416
- Gamma 2 32 FOOTNOTES (Table 1):
- 1. All samples are spikes except fish/invertebrate which are duplicate oyster samples.
- 2. Gamma in water QA spikes are treated as milk surrogates.
B-3
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 TABLE 2 RESULTS OF 2009 QUALITY CONTROL SAMPLE ANALYSES*
TLD Spike 16 0 Milk - Strontium 2 0 Milk - Iodine 0 2 (Note 1)
Water - Gamma 42 2 (Note 2)
Water - Tritium 6 2 (Note 3)
Oysters - Gamma 4 0 Air Particulate - Gross Beta 5 0
- Iodine 0 2 (Note 4)
- Gamma 8 2 (Note 5)
TOTALS TLDs: 16 TLDs: 0 Individual Nuclides: 67 Individual Nuclides: 10 FOOTNOTES (Table 2):
- To provide a more detailed comparison of pass versus failure, each nuclide was considered for the gamma and strontium analyses.
- 1. These ranged from 29 to 34 percent low, caused by Iodine spiking or preservation issues
- 2. One low by 96% (- 3.61 a), second high by 355% (+ 11.3 a); results consistent with State of CT
- 3. One low by 27% (- 3.64 a), second high by 28% (+ 3.53 a)
- 4. Low by 27 - 29 %. Similar results for State of CT; this indicates a low bias with the 1-131 spike.
The iodine in milk was also low confirming this bias.
- 5. High by 22 - 24% (just outside the 20% acceptance criteria)
B-4
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 APPENDIX C
SUMMARY
OF INTERLABORATORY COMPARISONS C-1
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Repoit Millstone Station 2009 INTRODUCTION This appendix covers the Intercomparison Program of the AREVA-NP Environmental Laboratory as required by technical specifications for each Millstone unit. AREVA-NP uses QAIQC samples provided by Analytics, Inc to monitor the quality of analytical processing associated with the Radiological Environmental Monitoring Program (REMP). The suite of Analytics QA/QC samples are designed to be comparable with the pre-1996 US EPA Interlaboratory Cross-Check Program in terms of sample number, matrices, and nuclides. It was modified to more closely match the media mix presently being processed by AREVA-NP and includes:
- milk for gamma (10 nuclides) and low-level (LL) Iodine-131 analyses once per quarter
- water for gamma (10 nuclides) and low-level (LL) Iodine-131 analyses during the 1st and 3rd quarters
- water for Sr-89 and Sr-90 analyses during the 1st and 4th quarters
- water tritium analysis during the 2nd and 4th quarters
- air filter for gamma (9 nuclides) analyses during the 2nd quarter
" air filter for gross beta analysis during the 1st and 3rd quarters
- charcoal filter for 1-131 during the 1st and 3rd quarters
- air filter for Sr-89 and Sr-90 analyses during the 2nd and 4th quarters In addition to the Analytics Intercomparison Program, AREVA-NP also participates in other intercomparsion programs which include radionuclides and media similar to those required by the Millstone program. These programs are the National Institute of Standards and Technology (NIST) Measurement Assurance Program (MAP), the Environmental Resource Associates (ERA) Proficiency Test (PT) Program, the Department of Energy (DOE) Quality Assessment Program (QAP), and the Mixed Analyte Performance Evaluation Program (MAPEP).
RESULTS Intercomparison program results are evaluated using AREVA-NP's internal bias acceptance criterion. The criterion is defined as within 25% of the known strontium value for samples containing both Sr-89 and Sr-90 and within 15% of the known value for other radionuclides, or within two sigma of the known value. Any sample analysis result which does not pass the criteria is investigated by AREVA-NP. Analytics Intercomparison Program results are included on pages C-3 through C-7 for 2009. Since the Fourth Quarter Analytics results are not usually available until mid April, the previous year's results are listed.
A total of 141 analysis results were obtained with 140 passing criteria, a 99% success rate.
The low bias on gross alpha on an water sample (E6558-162) was investigated by AREVA (AREVA CR 09-21). Gross alpha analyses are not performed on any Millstone REMP samples.
C-2
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 AREVA NP ENVIRONMENTAL LABORATORY ANALYTICS RADIOLOGICAL ENVIRONMENTAL CROSS-CHECK PERFORMANCE EVALUATION Num Ye0ar ~M6da Nuctide ? nt au, I~value An'~i E6346-162 4 th/ 2 0 0 8 Water Gross Alpha pCi/L 104 114 0.91 E6346-162 4 th/ 2 0 0 8 Water Gross Beta pCi/L 208 204 1.02 E6347-162 4 th/ 2 0 0 8 Water 1-131LL pCi/L 57.5 64.1 0.90 E6347-162 4th/2008 Water 1-131 pCi/L 54.3 64.1 0.85 E6347-162 4'h/2008 Water Ce-1 41 pCi/L 209 224 0.93 E6347-162 4 th/ 2 0 0 8 Water Cr-51 pCi/L 299 288 1.04 E6347-162 4 th/ 2 00 8 Water Cs-1 34 pCi/L 141 157 0.90 E6347-162 4 th/ 2 0 0 8 Water Cs-1 37 pCi/L 134 140 0.96 E6347-162 4 th/ 2 0 0 8 Watel Co-58 pCi/L 115 122 0.94 E6347-162 4 th/ 2 0 0 8 Watel Mn-54 pCi/L 172 178 0.97 E6347-162 4 th/ 2 0 0 8 Water Fe-59 pCi/L 122 117 1.04 E6347-162 4 th/2 0 0 8 Water Zn-65 pCi/L 203 214 0.95 E6347-162 4 th/ 2 0 0 8 Water Co-60 pCi/L 154 156 0.99 E6348-162 4 th/ 2 0 0 8 Water Sr-89 pCi/L 78.8 97.7 0.81 E6348-162 4 th/ 2 0 0 8 Water Sr-90 pCi/L 14.1 13.4 1.05 E6349-162 4 th/ 2 0 0 8 Water H-3 pCi/L 10300 10200 1.01 E6350-162 4 th/ 2 0 0 8 Charcoal 1-131 pCi 53.1 53.6 0.99 E6351-162 4th/2008 Filter Gross Alpha pCi 72.3 63.2 1.14 E6351-162 4 th/ 2 0 08 Filter Gross Beta pCi 127 113 1.12 E6352-162 4 th/ 2 0 0 8 Filter Ce-141 pCi 112 119 0.94 E6352-162 4 th/ 2 0 0 8 Filter Cr-51 pCi 152 153 0.99 E6352-162 4 th/ 2 0 0 8 Filter Cs-1 34 pCi 77.8 83.6 0.93 E6352-162 4 th/2 0 0 8 Filter Cs-1 37 pCi 76.8 74.6 1.03 E6352-162 4 th/ 2 0 08 Filter Co-58 pCi 63.1 64.9 0.97 E6352-162 4 th/ 2 0 0 8 Filter Mn-54 pCi 91.8 94.6 0.97 E6352-162 4 th/ 2 0 0 8 Filter Fe-59 pCi 60.4 62.5 0.97 E6352-162 4th/2008 Filter Zn-65 pCi 110 114 0.96 E6353-162 4 th/ 2 0 0 8 Milk I-131LL pCi/L 72.4 79.9 0.91 E6353-162 4 th/ 2 0 0 8 Milk 1-131 pCi/L 74.3 79.9 0.93 E6353-162 4 th/ 2 0 0 8 Milk Ce-141 pCi/L 184 191 0.96 E6353-162 4 th/ 2 00 8 Milk Cr-51 pCi/L 235 246 0.96 E6353-162 4 th/ 2 0 0 8 Milk Cs-134 pCi/L 125 134 0.93 E6353-162 4 th/ 200 8 Milk Cs-137 pCi/L 119 120 1.00 E6353-162 4th/2008 Milk Co-58 pCi/L 105 104 1.01 E6353-162 4th/2008 Milk Mn-54 pCi/L 152 152 1.00 E6353-162 4 th/ 2 0 08 Milk Fe-59 pCi/L 107 100 1.06 E6353-162 4 th/ 2 0 08 Milk Zn-65 pCi/L 177 183 0.97 E6353-162 4th/2008 Milk Co-60 pCi/L 135 133 1.01 C-3
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 AREVA NP ENVIRONMENTAL LABORATORY ANALYTICS ENVIRONMENTAL CROSS CHECK PROGRAM PERFORMANCE EVALUATION E6558-162 1st/2009 Water Gross Alpha pCi/L 120 162 0.75 E6558-1 62 1 t/2009 Water Gross Beta pCi/L 189 203 0.93 E6559-162 1 st/ 2 0 0 9 Water I-131LL pCi/L 63.2 69.0 0.92 E6559-162 1 st/2 0 0 9 Water I-131 pCi/L 58.8 69.0 0.85 E6559-1 62 1st/2009 Water Ce-i141 pCi/L 114 120 0.95 E6559-1 62 1st/2009 Water Cr-Si pCi/L 365 387 0.94 E6559-162 lst/2 0 0 9 Water Cs-134 pCi/L 107 119 0.90 E6559-1 62 lst/2 0 0 9 Water Cs-I137 pCi/L 136 141 0.96 E6559-162 lst/2 0 0 9 Water Co-58 pCi/L 145 151 0.96 E6559-1 62 1 t/2009 Water Mn-54 pCi/L 165 162 1 .02 E6559-1 62 1 st/2 0 0 9 Water Fe-59 pCi/L 128 127 1 .01 E6559-1 62 1 s*t/2 0 0 9 Water Zn-65 pCi/L 192 197 0.97 E6559-1 62 1 st/ 2 0 0 9 Water Co-60 pCi/L 184 180 1.02 E6560-162 lst/ 2 0 0 9 Water Sr-89 pCi/L 80.5 94.5 0.85 E6560-162 lst/ 2 0 0 9 Water Sr-90 pCi/L 14.9 15.1 0.99 E6561 -162 1st/2009 Water H-3 pCi/L 4090 4480 0.91 E6562-162 1 t/2009 Charcoal I-131 pCi 70.5 79.4 0.89 E6563-162 1s/2009 Filter Gross Alpha pCi 140 122 1.15 E6563-1 62 lst/ 2 0 0 9 Filter Gross Beta pCi 168 153 1.10 E6564-162 1 t/2009 Milk I-131LL pCi/L 72.9 79.3 0.92 E6564-162 l1t/2009 Milk I-131 pCi/L 69.1 79.3 0.87 E6564-162 lst/2009 Milk Ce-I141 pCi/L 91.7 94.9 0.97 E6564-162 lst/2 0 0 9 Milk Cr-5i pCi/L 300 305 0.98 E6564-162 1 st/ 2 0 0 9 Milk Cs-i134 pCi/L 85 93.7 0.91 E6564-1 62 1 st/2009 Milk Cs-i137 pCi/L 115 111 1.04 E6564-162 1 s/2009 Milk Co-S8 pCi/L 121 119 1.01 E6564-162 lst/2 0 0 9 Milk Mn-54 pCi/L 135 128 1.05 E6564-162 lst/2009 Milk Fe-59 pCi/L 109 99.9 1.09 E6564-162 l1t/2009 Milk Zn-65 pCi/L 1SS 156 0.99 E6564-I162 1 t/2009 Milk Co-60 pCi/L 146 142 1 .03 E6565-162 1 st/2 0 0 9 Milk Sr-89 pCi/L 80.1 97.7 0.82 E6565-162 l1t/2009 Milk Sr-90 pCi/L 14.5 15.6 0.93 C-4
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 AREVA NP ENVIRONMENTAL LABORATORY ANALYTICS RADIOLOGICAL ENVIRONMENTAL CROSS-CHECK PERFORMANCE EVALUATION K~ Sipe~ l Rprtedd.. Knw E6711-162 2 nd/2 0 0 9 Water Gross Alpha pCi/L 272 281 0.97 E6711-162 2 nd/ 2 0 0 9 Water Gross Beta pCi/L 157 141 1.11 E6712-162 2 nd/ 2 0 0 9 Water 1-131LL pCi/L 83.5 88.3 0.95 E6712-162 2 nd/ 2 0 0 9 Water 1-131 pCi/L 87.4 88.3 0.99 E6712-162 2 nd/ 2 0 0 9 Water Ce-141 pCi/L 206 216 0.96 E6712-162 2 nd/ 2 0 0 9 Water Cr-51 pCi/L 290 304 0.95 E6712-162 2 nd/ 2 0 0 9 Water Cs-1 34 pCi/L 111 126 0.88 E6712-162 2 nd/ 2 0 0 9 Water Cs-1 37 pCi/L 148 146 1.02 E6712-162 2 nd/ 2 0 0 9 Water Co-58 pCi/L 70.3 69.8 1.01 E6712-162 2 nd/ 2 0 0 9 Water Mn-54 pCi/L 107 104 1.03 E6712-162 2 nd/2009 Water Fe-59 pCi/L 97.7 92.9 1.05 E6712-162 2 nd/ 2 0 0 9 Water Zn-65 pCi/L 142 133 1.07 E6712-162 2 nd/2 0 0 9 Water Co-60 pCi/L 231 237 0.97 E6713-162 2 nd/ 2 0 0 9 Water Sr-89 pCi/L 77.8 91.1 0.85 E6713-162 2 nd/ 2 0 0 9 Water Sr-90 pCi/L 13.1 13.6 0.96 E6714-162 2 nd/2009 Water H-3 pCi/L 12300 13300 0.92 E6715-162 2 nd/ 2 0 0 9 Charcoal 1-131 pCi 92.5 95.1 0.97 E6716-162 2 nd/ 2 0 0 9 Filter Gross Alpha pCi 102 118 0.86 E6716-162 2 nd/ 2 0 0 9 Filter Gross Beta pCi 60.3 59.3 1.02 E6717-162 2 nd/2 0 0 9 Filter Ce-141 pCi 79.7 85.6 0.93 E6717-162 2nd/2009 Filter Cr-51 pCi 116 121 0.96 E6717-162 2nd/2009 Filter Cs-134 pCi 46.9 49.9 0.94 E6717-162 2nd/2009 Filter Cs-1 37 pCi 59.8 57.9 1.03 E6717-162 2 nd/ 2 0 0 9 Filter Co-58 pCi 27.4 27.7 0.99 E6717-162 2nd/2009 Filter Mn-54 pCi 41.0 41.3 0.99 E6717-162 2nd/2009 Filter Fe-59 pCi 34.8 36.9 0.94 E6717-162 2"d/2009 Filter Zn-65 pCi 52.4 52.9 0.99 E6717-162 2nd/2009 Filter Co-60 pCi 88.3 94.0 0.94 E6718-162 2 nd/ 2 0 0 9 Milk 1-131LL pCi/L 94.7 102 0.93 E6718-162 2 nd/ 2 0 0 9 Milk 1-131 pCi/L 97.7 102 0.96 E6718-162 2 nd/ 2 0 0 9 Milk Ce-141 pCi/L 275 284 0.97 E6718-162 2 nd/ 2 0 0 9 Milk Cr-51 pCi/L 395 400 0.99 E6718-162 2 nd/ 2 0 0 9 Milk Cs-134 pCi/L 146 166 0.88 E6718-162 2 nd/2009 Milk Cs-137 pCi/L 187 192 0.97 E6718-162 2 nd/2 0 0 9 Milk Co-58 pCi/L 90.0 91.9 0.98 E6718-162 2 nd/2 0 0 9 Milk Mn-54 pCi/L 138 137 1.01 E6718-162 2 nd/ 2 0 0 9 Milk Fe-59 pCi/L 130 122 1.06 E6718-162 2 nd/ 2 0 0 9 Milk Zn-65 pCi/L 185 175 1.05 E6718-162 2 nd/ 2 0 0 9 Milk Co-60 pCi/L 316 312 1.01 C-5
Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report Millstone Station 2009 AREVA NP ENVIRONMENTAL LABORATORY ANALYTICS ENVIRONMENTAL CROSS CHECK PROGRAM PERFORMANCE EVALUATION
<SamplIe etriP Sampoie , Repor'd
~r~ mbeii<~ i Meda
- K~Yea~, ~ ~ Nu~td ~ -its~ Value. _".Value Iics&
l~~n E6823-162 3rd/2009 Water Gross Alpha pCi/L 275 324 0.85 E6823-162 3rd/2009 Water Gross Beta pCi/L 281 287 0.98 E6824-162 3rd/2009 Water I-131 LL pCi/L 100.9 98.4 1.02 E6824-162 3rd/2009 Water 1-131 pCi/L 87.7 98.4 0.89 E6824-162 3rd/2009 Water Ce-1 41 pCi/L 258 264 0.98 E6824-162 3rd/2009 Water Cr-51 pCi/L 199 212 0.94 E6824-162 3rd/2009 Water Cs-i 34 pCi/L 108 118 0.92 E6824-162 3rd/2009 Water Cs-1 37 pCi/L 175 177 0.99 E6824-162 3rd/2009 Water Co-58 pCi/L 94.8 95.4 0.99 E6824-162 3rd/2009 Water Mn-54 pCi/L 200 198 1.01 E6824-162 3rd/2009 Water Fe-59 pCi/L 146 141 1.04 E6824-162 3rd/2009 Water Zn-65 pCi/L 198 195 1.01 E6824-162 3r/2009 Water Co-60 pCi/L 149 154 0.97 E6825-162 3rd/2009 Water Sr-89 pCi/L 88.9 105 0.85 E6825-162 3'/2009 Water Sr-90 pCi/L 18.1 18.5 0.98 E6826-162 3r/2009 Water H-3 pCi/L 13500 14100 0.96 E6827-162 3rd/2009 Charcoal 1-131 pCi 89.5 92.0 0.97 E6828-162 3ro/2009 Filter Gross Alpha pCi 251 265 0.95 E6828-162 3'/2009 Filter Gross Beta pCi 239 235 1.02 E6829-162 3rd/2009 Milk I-131 LL pCi/L 97.2 98.6 0.99 E6829-162 3rd/2009 Milk 1-131 pCi/L 104 98.6 1.06 E6829-162 3rd/2009 Milk Ce-141 pCi/L 270 275 0.98 E6829-162 3rd/2009 Milk Cr-51 pCi/L 217 221 0.98 E6829-162 3r/2009 Milk Cs-1 34 pCi/L 111 123 0.90 E6829-162 3rd/2009 Milk Cs-I 37 pCi/L 188 185 1.02 E6829-162 3r/2009 Milk Co-58 pCi/L 99.2 99.4 1.00 E6829-162 3d/2009 Milk Mn-54 pCi/L 210 206 1.02 E6829-162 3r"/2009 Milk Fe-59 pCi/L 159 147 1.08 E6829-162 3rd/2009 Milk Zn-65 pCi/L 209 204 1.02 E6829-162 3rd/2009 Milk Co-60 pCi/L 160 160 1.00 E6830-162 3d/2009 Milk Sr-89 pCi/L 91.8 107 0.86 E6830-162 3rd/2009 Milk Sr-90 pCi/L 18.1 18.8 0.96 C-6