Text

Annual Radiological Environmental Operating Report for 2004
	ML051230393
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	04/25/2005
From:	Gerard van Noordennen; Connecticut Yankee Atomic Power Co
To:	; Document Control Desk, NRC/FSME
References
	CY-05-116
	Download: ML051230393 (87)
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CONNECTICUT YANKEE ATOMIC POWER COMPANY HADDAM NECK PLANT a 362 INJUN HOLLOW ROAD

EAST HAMPTON, CT 06424-3099 APR 2 5 2005 Docket No. 50-213 CY-05-1 16 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 Haddam Neck Plant Annual Radioloqical Environmental Operating Report In accordance with the requirements of Section 5.6.1 of Appendix F of the Connecticut Yankee Quality Assurance Program (CYQAP) for the Haddam Neck Plant (HNP) and the Radiological Effluent Monitoring and Offsite Dose Calculation Manual, an implementing document of the CYQAP, an electronic and a hard copy of the Annual Radiological Environmental Operating Report are enclosed.

If you should have any questions regarding this submittal, please contact me at (860) 267-3938.

Sincerely, 6 IAI-va z. 2 A/ 4- 5^-0 Gerard P. van Noordennen Date Regulatory Affairs Manager

Enclosure:

Annual Radiological Environmental Operating Report cc: S. J. Collins, NRC Region I Administrator T. B. Smith, NRC Project Manager, Haddam Neck Plant R. R. Bellamy, Chief, Decommissioning and Laboratory Branch, NRC Region I E. L. Wilds, Jr., Director, CT DEP Monitoring and Radiation Division M. Rosenstein, US EPA, Region 1

ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT HADDAM NECK STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM JANUARY 1, 2004 - DECEMBER 31, 2004 DOCKET NO. 50-213 LICENSE NO. DPR-61 CONNECTICUT YANKEE ATOMIC POWER COMPANY Haddam, Connecticut AREVA DOC. # 47-5062619-00

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Haddam Neck Station Annual Radiological Environmental Operating Report 2004 TABLE OF CONTENTS 1.0 EXECUTIVE

SUMMARY

....................................... 1

2.0 INTRODUCTION

....................................... 2 2.1 GENERAL PLANT SrrE INFORMATION ....................................... 2 2.2 PROGRAM DESIGN ....................................... 2 2.3 MONIT ORINGN ZONES ....................................... 3 2.4 PATHWAYS MONITORED ....................................... 3

2.5 DESCRIPTION

S OF MONITORING PATHWAYS ....................................... 3 2.5.1 Air Sampling............................ 3 2.5.2 River Water Sampling............................ 3 2.5.3 Well Water Sampling ............................ 4 2.5.4 Sediment Sampling ........................... 4 2.5.5 Milk Sampling............................ 4 2.5.6 Fish Sampling............................ 4 2.5.7 ShellfishSSampling ........................... 4 2.5.8 Food Product Sampling............................ 4 2.5.9 Broad Leaf Vegetation............................ 4 2.5.10 ISFSI Sediment and Water Sampling............................ 4 2.5.11 TLD Monitoring............................ 5 2.5.12 ISFSI TLD Monitoring ........................... 5 2.6 SAMPLES COLLECTED DURING 2004 ...................................... . 12 3.0 RADIOLOGICAL DATA

SUMMARY

TABLES ....................................... 13 4.0 ANALYSIS OF ENVIRONMENTAL RESULTS ...................................... 27 4.1 SAMPLING PROGRAM DEVIATIONS ....................................... 27 4.2 COMPARISON OF ACHIEVED LLD WITH REQUIREMENTS ....................................... 29 4.3 RESULTS COMPARED AGAINST REPORTING LEVELS ...................................... 29 4.4 DATA ANALYSIS BY MEDIA TYPE....................................... 29 4.4.1 Air ParticulateGross Beta Radioactivity........................... 30 4.4.2 River Water.............. 31 4.4.3 Well Water.............. 31 4.4.4 Bottom Sediment ............................ 33 4.4.5 Fruits and Vegetables........................... 34 4.4.6 Broad Leaf Vegetation........................... 34 4.4.7 Shellfish .. . . . . . . . . . . . . . . . . . . . . . . . . . . 34 4.4.8 Fish........................... 34 4.4.9 Gamnua Exposure Rate........................... 35 4.4.10 ISFSI Gamnma Exposure Rate ........................... 38 5.0 OFF-SITE DOSE EQUIVALENT COMMITMENTS ....................................... 41 Appendix A - Land Use Censusfor 2004.. A-I Appendix B - QualityAssurance Program.B-I Appendix C- Summary of 2004 REMP Data. C-I Appendix D- Summary of Unreported2003 REMP Data.D-I ii

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Li 1.0 EXECUTIVE

SUMMARY

The radiological environmental monitoring program for the Haddam Neck Station was continued for the period January through December 2004, in compliance with the Technical Specifications and the Radiological Effluent Monitoring and Off-U Site Dose Calculation Manual (REMODCM). This annual report was prepared for the Connecticut Yankee Atomic Power Company (CYAPCO) by Framatome-ANP, an AREVA and Siemens Company. Sample collection and preparation were performed by Normandeau Associates. Laboratory analyses were performed by Framatome ANP Environmental Laboratory ll (FANPEL), a subsidiary of AREVA.

Thermoluminescent dosimeters (TLDs) were used to measure direct gamma exposure in the vicinity of the station and as far away as 12.5 miles. Radiochemical and radiological counting analyses of samples were performed to detect the presence of any station related radioactivity. In the second quarter of 2003, additional sampling locations associated with the placement onsite of an Independent Spent Fuel Storage Installation (ISFSI) were selected for the purpose of collecting baseline background information prior to the transfer of spent fuel from the main plant to the ISFSI. The first ISFSI canister containing Greater Than Class C (GTCC) material was placed on the storage pad in April 2004. Over the following eight L months in 2004, an additional 28 ISFSI canisters with spent fuel and GTCC was transferred to the storage pad. ISFSI TLD's located in the area around the site boundary showed no significant change in exposure rate in 2004 over the baseline

.U measurements.

Samples included air particulates collected on filters, broad leaf vegetation, fruits/vegetables, well water, river water, ISFSI water, bottom sediment, ISFSI bottom sediment, shellfish, and fish. In evaluating the results of these analyses it is necessary

, to consider the variability of natural and man-made sources of radioactivity, distribution in the environment and uptake in environmental media. This variability is dependent on many factors including station release rates, past spatial variability of radioactive fallout from nuclear weapons tests and on-going redistribution of fallout, contribution from cosmogenic L radioactivity, ground water dynamics, soil characteristics, farming practices, and feed type. Any one of these factors could cause significant variations in measured levels of radioactivity. Therefore, these factors need to be considered in order to l properly explain any variations in radiation detected and to distinguish between natural and station related radioactivity.

Haddam Neck was permanently shutdown in 1996. Activities in 2004 at the Haddam Neck station were focused on fuel storage, site decontamination and facility decommissioning. Even though the station is no longer generating power, L decommissioning activities include the processing and discharge of liquids containing radioactivity. Monitoring continues for any release of liquid or airborne radioactivity. The levels of radioactivity released post-operation are significantly lower than LI released during plant operation. The radiological monitoring of the environment through this program will continue to assure the health and safety of the public and workers are maintained at all times.

l The predominant radioactivity detected by the monitoring program was that from outside sources, such as fallout from nuclear weapons tests and naturally occurring radionuclides. Station related Cobolt-60 was observed in one bottom sediment sample.

However, the identification occurred in the area of plant discharge, representing a pathway that is not involved with significant exposure to the public. Cesium-137 was also observed in several bottom sediments, but is most likely dominated by past weapons fallout as the measured concentration at both indicator and control stations were practically the same.

1

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 U

2.0 INTRODUCTION

2.1 General Plant Site Information The Connecticut Yankee plant is located in the town of Haddam, Middlesex County, Connecticut, at a point 22 miles south-southeast of Hartford, Connecticut; 25 miles northeast of New Haven, Connecticut; and 16 miles north of Long Island Sound.

The site consists of approximately 525 acres and is situated on the east bank of the Connecticut River at an area known as Haddem Neck. The elevation of the site property varies from 10 to 300 feet above sea level, with the area occupied by plant facilities ranging between 10 and 21 feet above sea level. The minimum distance from the reactor containment to the site

, boundary is approximately 1700 feet.

The plant was designed as a single unit pressurized water reactor which sustained its initial chain reaction in July 1967, with commercial operation beginning in January 1968 and a gross power output of 590 Mw (e). After 28 years of operation, the CY Board of Directors voted in 1996 to permanently close and decommission the power plant. Following two years of planning and preparation, actual decommissioning began in 1998 and was underway during 2004 for which this radiological L environmental monitoring report covers.

Ul 2.2 Program Design The Radiological Environmental Monitoring Program for the Haddam Neck Station was designed with specific objectives.

L 0* To provide an early indication of the appearance or accumulation of any radioactive material in the environment cased by Haddam Neck Station activities.

To provide assurance to regulatory agencies and the public that the environmental impact for Haddam Neck L

Station is known and within anticipated limits.

To verify the adequacy and proper functioning of station effluent controls and monitoring systems.

L These objectives continue to be in force throughout the decommissioning activities at the Haddam Neck Station site. Due to the shutdown status of the plant and the relatively low quantities of radioactive material now on the site, some of the L objectives have shifted in degree of importance from the past.

The radiological environmental monitoring program continued without modification following the plant shutdown in 1996.

The program scope was reduced in 2000 and implemented beginning in 2001 primarily to reflect the absence of a source of

- radionuclide production and to account for the long decay period, since shutdown, for the individual short half-life radionuclides in the various pathways. The onsite radionuclide inventory continues to decrease yearly with the shipments to off-site facilities and radioactive decay.

The program was developed to meet the intent of the NRC Regulatory Guide 4.1, Programs for Monitoring Radioactivity in L.. the Environs of Nuclear Power Plants; NRC Regulatory Guide 4.8, Environmental Technical Specifications for Nuclear Power Plants; the NRC Branch Technical Position of November 1979, An Acceptable Radiological Environmental L Monitoring Program; and NRC NUREG-0472, Radiological Effluent Technical Specifications for PWR's.

The environmental TLD program was developed using NRC Regulatory Guide 4.13, Performance, Testing and Procedural Specifications for Thermoluminescence Dosimetry: Environmental Applications. The quality assurance program was L designed using the guidance given in NRC Regulatory Guide 4.15, Quality Assurance for Radiological Monitoring Programs (Normal Operations) - Effluent Streams and the Environment.

2

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Lidentification The sampling requirements of the REMODCM are given in Table E-1 of the ODCM and Table 2.1 of this report. The of the required sampling locations is given in Appendix G of the ODCM and Table 2.2 of this report. The monitoring locations are shown graphically in Figures 2.1 and 2.2.

2.3 Monitoring Zones The REMP is designed to allow comparison of levels of radioactivity in samples from the area potentially influenced by the plant to levels found in areas not influenced by the plant. The first area monitoring locations are designated as indicators and the second area monitoring locations are designated as controls. The distinction between the two areas, for a particular pathway, is based on relative direction from the plant, river flow, and distance. Analysis of survey data from the two areas is used to differentiate between radiation due to plant activities and other sources such as atmospheric nuclear weapons test fallout or seasonal variations in the natural background.

L 2.4 Pathways Monitored Four pathway categories; airborne, waterborne, ingestion, and direct radiation are monitored by the REMP. Each of these ll categories is monitored by the collection of one or more sample types listed and described below.

Airborne Pathway: Air Particulate Sampling Waterborne Pathway: River Water Well Water Sediment Sampling ISFSI Sediment and Water Sampling Ingestion Pathway: Fruits and Vegetable Sampling Fish and Shellfish Sampling U Broadleaf Vegetation Milk Sampling (when required and if available)

Direct Radiation: TLD Monitoring Lj ISFSI TLD Monitoring Li 2.5 Descriptions of Monitoring Pathways Sample types and frequency of analysis are given in Table 2.1. The sample locations are listed in Table 2.2 and shown in Figure 2.1 and Figure 2.2. The program as described in this report includes both required samples as specified in the

- REMODCM and any extra samples.

2.5.1 Air Sampling Continuous air samplers are installed at five locations as required by the REMODCM. The sampling pumps at these locations operate continuously at a flow rate of approximately one cubic foot per minute. Airborne particulates are collected by passing u air through a 47-mm glass-fiber filter. A dry gas meter is incorporated into the sampling stream to measure the total volume of air sampled in a given interval. The filters are collected biweekly, and to allow for the decay of radon daughter products, L t they are held at least 100 hours0.00116 days 0.0278 hours 1.653439e-4 weeks 3.805e-5 months before being analyzed for gross-beta radioactivity (indicated as GR-B in the data tables). The biweekly filters are combined by location at the FANPEL for a quarterly gamma spectroscopy analysis.

L 2.5.2 River Water Sampling River water samples are collected from two sampling locations, an indicator and control station. An automatic composite sampler is located at the indicator sampling station (28-I) collecting an equal volume of water every hour. A grab sample is I_ collected once every two weeks at the control sampling station, 30-C. Approval to relocate station 30-C approximately one 3

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 mile upriver was granted in April and the station is renamed 30-A-C for samples collected from May 2003 on. All quarterly Li samples receive a gamma isotopic and tritium analysis 2.5.3 Well Water Sampling Well water samples are collected quarterly from one onsite well and one off-site well. Gamma isotopic and tritium analyses are performed on each.

2.5.4 Sediment Sampling Shoreline sediment samples are collected semiannually from three locations, one near the plant discharge, one downstream L and one control station, upstream from the plant. A grab sample is taken semiannually from each location; they are dried at the FANPEL and analyzed for gamma-emitting radionuclides.

L 2.5.5 Milk Sampling Milk sampling is no longer a requirement of the REMODCM unless indicated by the annual Land Use Census and dose calculations.

2.5.6 Fish Sampling Fish samples are collected semiannually from three river locations, two indicator stations from the vicinity of the intake and discharge and one control station north of the plant. The species typically collected are bullheads, perch and /or catfish. The edible portions of the fish are analyzed for gamma-emitting radionuclides.

Li 2.5.7 Shellfish Sampling Shellfish samples are collected semiannually from two river locations. The shellfish is shucked and the muscle portions are I j analyzed by gamma isotopic analysis.

2.5.8 Food Product Sampling Food products are collected from two locations near the beginning of the growing season and at the end of the season. The samples are either tuberous vegetables, aboveground vegetables, or fruit. The sampling requirement is that one sample is collected from a location within 10 miles of the plant and the other from a location beyond 10 miles. The samples are L analyzed by gamma isotopic analysis.

2.5.9 Broad Leaf Vegetation Leafy vegetation is collected from three locations, one on-site, one at the site boundary and one at a control location. During 2004, broad leaf vegetation was also collected from an extra sampling location, 41-X, that is beyond the minimum I, requirement of the REMP. These samples are collected monthly during the growing season from April to December.

2.5.10 ISFSI Sediment and Water Sampling In the second quarter of 2003, seven additional sampling locations (five indicator locations and two extra locations) associated with the placement on-site of an Independent Spent Fuel Storage Installation (ISFSI) were selected for the purpose of collecting baseline background information prior to the transfer of spent fuel from the main plant to the ISFSI. The first li ISFSI canister containing Greater Than Class C (GTCC) material was placed on the storage pad on April 20, 2004. By the end of 2004, an additional 28 ISFSI canisters with spent fuel and GTCC was transferred to the ISFSI onsite.

L The new sample locations are specific to the ISFSI and are beyond the standard REMP that has been in operation over the life of the power plant's license. ISFSI sediment samples are collected quarterly from two locations, one at nearby wetland location and one near the ISFSI pad. A grab sample is taken quarterly from each location; they are dried at the FANPEL and analyzed for gamma-emitting radionuclides. Gamma isotopic and tritium analysis is performed on all water samples.

4

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 2.5.11 TLD Monitoring U Direct gamma radiation exposure is continuously monitored with the use of Panasonic UD-801AS I thermoluminescent dosimeters (TLDs). TLD's are posted at fourteen REMODCM required locations and at nine extra locations. The extra locations are mostly within the site boundary and are not part of the REMP. Their function is to monitor the potential impact of on-site activities such as the movement or storage of decommissioned components on site boundary exposure rates.

U 2.5.12 ISFSI TLD Monitoring In the second quarter of 2003, seven additional sampling locations (five indicator locations and two extra locations) associated with the placement on-site of an Independent Spent Fuel Storage Installation (ISFSI) were selected for the purpose LI of collecting baseline background information prior to the transfer of spent fuel from the main plant to the ISFSI. The baseline background collection period ended on April 20, 2004 with the transfer of the first ISFSI canister to the designated i) storage location. The new sample locations are specific to the ISFSI and are beyond the standard REMP that has been in L operation over the life of the power plant's license. New quarterly TLD locations were located in the area surrounding the facility at distances that approximated the site boundary to support future determinations that direct and scatter dose from ISFSI operations remain in compliance with offsite dose limits to the public.

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Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 2.1- Required Sampling Frequency & Type of Analysis (REMODCM Table E-1) -

Exposure Pathway Number of Sampling & Collection and/or Sample Locations Frequency - Type of Analysis Quar.erl....

la. Gamma Exposure - 14 Quarterly Gamma Dose - Quarterly Environmental TLD lb. Gamma Exposure - 5 Quarterly Gamma Dose - Quarterly ISFSI TLD 5 Continuous sampler - Gross Beta - Biweekly

2. Airborne Particulate biweekly filter change Gamma Isotopic - Quarterly on composite (by location), and on individual filter if gross beta is greater than 10 times the mean of the biweekly control station's gross beta results 2 One sample near middle & Gamma Isotopic on each sample 3a. Vegetation - Fruits and Vegetables one near end of growing season Monthly during growing Gamma Isotopic on each sample 3b. Vegetation - Broad 3 Leaf Vegetation season (April - December)

4. Milk 4 Monthly, if required Gamma Isotopic on each sample - Monthly Sr-89 and Sr Quarterly

5. Well Water 2 Quarterly Gamma Isotopic and Tritium on each composite

6. Bottom Sediment 3 Semiannually Gamma Isotopic

7. ISFSI Sediment 2 Quarterly Gamma Isotopic

8. River Water 2 Quarterly Sample - Indicator Gamma Isotopic and Tritium - Quarterly is continuous composite; Background is composite of grab samples collected biweekly

9. ISFSI Water 2 Quarterly Gamma Isotopic and Tritium

10. Fish (edible portion) - 3 Semiannual Gamma Isotopic - Semiannual bullheads and, when available, perch or other edible fish

11. Shellfish 2 Semiannual Gamma Isotopic - Semiannual 6

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 2.2 - Environmental Monitoring Program Sampling Types and Locations Exposure Pathway Location Location Name Distance From Direction From (Sample Type Designation) Number 1 Release Point2 ReleasePoint 2 (miles)

Airborne

a. Filter (AP) 5-1 On-site-Injun Hollow Rd. 0.4 NW 6-1 On-site-Substation 0.5 NE 7-1 Haddam 1.8 SE 9-1 Higganum 4.3 WNW 13-C North Madison 12.5 SW

b. Vegetation (TV) 6-1 On-site-Substation 0.5 NE 18-1 Site Boundary 0.4 NW 13-C North Madison 12.5 SW Waterborne

a. River (WR) 28-1 CT River-E. Haddam Bridge 1.8 SE 30-C CT River - Middletown 9.0 NW

b. Well Water (WW) 15-1 On-site Wells 0.5 ESE 16-C Well-State Highway Dept. E. 2.8 SE Haddam

c. Bottom Sediment (SE) 28-1 CT River-E. Haddam Bridge 1.8 SE 29-1 Vicinity of Discharge Within 0.3 Miles 30-C CT River- Middletown 9.0 NW ISFSI

a. Bottom Sediment (IF) 57-IF Dibble Creek Sediment Sample 0.1 SE 58-IF ISFSI Pad Enclosure Soil Sample 0.0 N/A

b. ISFSI Water (WG) 57-IF Dibble Creek Water Sample 0.1 SE 58-IF ISFSI Drain Pipe Outflow 0.0 N/A Ingestion

a. Fruits & Vegetables (1T) 17-C Beyond 10 Miles Beyond 10 miles SW 25-1 Within 10 Miles Within 10 miles NW

b. Fish (FH) 26-1 CT River-Near Intake 1.0 WNW 29-1 Vicinity of Discharge Within 0.3 miles 30-C CT River - Middletown 7.6 NW

c. Shellfish (SF) 27-C CT River-Higganum Light 4.0 WNW 31-1 Mouth of Salmon River 0.8 ESE I I=Indicator C=Control IF=ISFSI 2 The release points are the stack for terrestrial locations and the end of the discharge canal for aquatic locations 7

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 2.2 - Environmental Monitoring Program Sampling Types and Locations (continued)

Exposure Pathway Location Location Name -- Distance From Direction From (Sample Type Designation) Number1 Release Point2 Release Point2 (miles)

Direct Radiation TLD 1-1 On-site - Mouth of Discharge Canal 1.1 ESE 2-1 Haddam-Park Rd. 0.8 S 3-I Haddam-Jail Hill Rd. 0.8 WSW 4-1 Haddam-Ranger Rd. 1.8 SW 5-1 On-site-Injun Hollow Rd. 0.4 NW 6-1 On-site-Substation 0.5 NE 7-1 Haddam 1.8 SE 8-1 East Haddam 3.1 ESE 9-1 Higganum 4.3 WNW 10-1 Hurd Park Rd. 2.8 NNW II-C Middletown 9.0 NW 12-C Deep River 7.1 SSE 13-C North Madison 12.5 SW 14-C Colchester 10.5 NE 40-X Near Intake Structure 0.1 SSW 41-X Picnic Area 0.3 WNW 42-X Environmental Trail 0.1 NW 43-X Moodus- Rts 149 & 151 2.5 ENE 44-X Shailerville, Horton Rd. 1.0 SE 45-X Old Waste Gas Sphere Fence 0.1 E 46-X Discharge Canal Fence 0.2 SE 47-X Visitor Info Center 0.1 WNW 48-X Onsite Met Tower Shack 0.4 WSW 52-IF Schmidt Cemetery Onsite 0.5 NNE 53-IF ISFSI Haul Route Onsite 0.2 SSW 54-IF Rt. 149 Salmon River 1.0 ESE 55-IF HV Tower NW of Pad 0.4 NW 56-IF Burrow Pit On-Site 0.2 E I=Indicator C=Control X=Extra (not part of REMP) IF=ISFSI Indicator The release points are the stack for terrestrial locations and the end of the discharge canal for aquatic locations 8

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 2.3 - Environmental Lower Limit of Detection (LLD) Sensitivity Requirements (REMODCM Table E-3)

'Airborne Analysis Water Particulate Fish Milk Food Sediment (pCi/l) or Gas (pCi/kg wet) . (pCi/I) Products (pCi/kg dry) 3

__._. _ ._ - (pCi/m ) .. _._; . (pCi/kg/wet)

Gross Beta 0.01 H-3 2000 Mn-54 15 130 Co-60 15 130 150 Zn-65 30 260 Cs-134 15 0.05 130 15 60 150 Cs-137 18 0.06 150 18 80 180 Table 2.4 - Reporting Levels for Radioactivity Concentrations in Environmental Samples (REMODCM Table E-2)

Airborne Analysis Water 'Particulates Fish -'Milk' V Shellfish' (pCi/1) or Gases (pCi/kg wet) (pCi/) (pCkgwet) '(pCi/kg,wet) 3 (pCim/ ) . .___._-

H-3 20000 Mn-54 1000 30000 140000 Co-60 300 10000 50000 Zn-65 300 20000 80000 Cs-134 30 10 1000 60 1000 5000 Cs-137 50 20 2000 70 2000 8000 9

U Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Figure 2.1 - Haddam Neck Sampling Locations Li U

L Li U

L!

L ILi!

L Li Li 10

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Figure 2.2 - Haddam Neck SamplingLocations U

I I

I 11 CI

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 2.6 Samples Collected During 2004 The following table summarizes the number of samples of each type collected during the 2004 reporting period:

N mber ofby ta l j p -

O aSample ye -' nayed.ofAfalyses rames !

A Control Extras 1~ .0ndicat$

~~ ~ '_

- i n 2 0 04 _ _ _ _ _ _ _ _ _ _ _

Gamma Exposure 92 40 16 36 environmental TLD lSFSI TLD 20 16 4 Air Particulate 129 103 26 U Fish 12 8 4 Bottom Sediment 6 4 2 Shellfish 4 2 2 ISFSI Sediment 4 4 Li Fruit & Vegetables 4 2 2 Broad Leaf Vegetation 28 14 7 7 L ISFSI Water 4 4 Li River Water Well Water 8

7 4

4 4

3 Total All Types 318 205 66 47 L

L L.I U

LA I 12

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 L 3.0 RADIOLOGICAL DATA

SUMMARY

TABLES This section summarizes the analytical results of the environmental samples that were collected during 2004. These results, shown in Table 3.1, are presented in a format similar to that prescribed in the NRC's Radiological Assessment Branch L Technical Position on Environmental Monitoring (Reference 1). The results are ordered by sample media type and then by radionuclide for the pathways described in Section 2.3. The units for each media type are also given. Table 3.2 provides the L same information for TLD direct radiation measurements.

The left-most column contains the radionuclide of interest, the total number of analyses for that radionuclide in 2004, and the li number of measurements which exceeded the Reporting Levels found in Table 2.5. The latter are classified as "Non-routine" measurements. The second column lists the required Lower Limit of Detection (LLD) for those radionuclides, which have r t detection capability requirements specified in Table 2.4. The absence of a value in this column indicates that no LLD is specified in the REMODCM for that radionuclide in that media. The target LLD for any analysis performed by the FANPEL is typically 30-40 percent of the most restrictive required LLD.

L For each media type and radionuclide, the remaining three columns summarize the data for the following categories of monitoring locations: (1) the Indicator stations, which are within the range of influence of the plant and which could 1 conceivably be affected by plant activities; (2) the station which had the highest mean concentration during 2004, and (3) the Control stations, which are beyond the influence of the plant. Direct radiation monitoring stations (using TLDs) are grouped into Indicator and Control stations.

L In each of these columns, for each radionuclide, the following are given:

The mean value of all concentrations including negative values and values that are not considered "detectable".

The lowest and highest concentration.

The number of detectable measurements divided by the total number of measurements.

A sample is considered to yield a "detectable measurement" when the concentration exceeds three times its associated standard deviation. The standard deviation on each measurement represents only the random uncertainty associated with the radioactive decay process (counting statistics), and not the propagation of all possible uncertainties in the analytical IJ procedure.

Li The radionuclides reported in this section represent those that: 1) had a Reporting Level listed in Table E-2 of the REMODCM or, a LLD requirement in Table E-3 of the REMODCM or 2) had a positive measurement of radioactivity, whether it was naturally-occurring or man-made; or 3) were of specific interest for any other reason. The radionuclides that are routinely analyzed and reported by the FANPEL in a gamma spectroscopy analysis are: Ac/Th-228, Ag-108m, Ag-I 10m, L Ba-140, Be-7, Ce-141, Ce-144, Co-57, Co-58, Co-60, Cr-51, Cs-134, Cs-137, Fe-59,1-131, K-40, La-140, Mn-54, Nb-95, Ru-103, Ru-106, Sb-124, Sb-125, Se-75, Zn-65 and Zr-95. In no instance did a radionuclide that is not shown in Table 3.1 appear as a "detectable measurement" during 2004.

L Data from direct radiation measurements made by TLDs are provided in Table 3.2 in a format essentially the same as above.

The complete listing of quarterly TLD data is provided in Table 3.3.

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Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January - December 2004)

MEDIUM: Air Particulates (AP) UNITS: oCl/cubic meter Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine LLD No. Detected" No. Detected" No. Detected" GR-B (129) 0.01 1.91 -2 07 2.01 -2 1.9Z -2

( 9.4 - 36.5)E -3 ( 1.1 - 3.6)E -2 1.2 - 3.3)Z -2 (0)

(103/ 103) (25/ 25) (26i 26)

Be-7 (20) 8.6E -2 05 9.8Z -2 8.5Z -2

( 3.5 - 18.6)X -2 ( 7.4 - 11.8)Z -2 3.7 - 10.6)E -2 (0)

(14/ 16) (4/ 4) (3/ 4)

Co-58 (20) 1.2E -4 09 1.11 -3 -8.91 -4

( -1.0 - 2.6)E -3 I -4.2 - 26.0)Z -4 -1.4 - 0.0)Z -3 (0)

(0/ 16) *(0/ 4) (0/ 4)

Co-60 (20) 1.2z -4 09 4.0z -4 4.01 -4

( -1.4 - 1.5)E -3 -6.0 - 15.0)Z -4 -2.2 - 10.0)Z -4 (0)

(0/ 16) (0/ 4) (0/ 4)

Cs-134 (20) 0.05 1.7z -4 09 4.O0 -4 4.01 -5

( -1.0 - 1.6)Z -3 ( 1.0 - 5.8)Z -4 -1.1 - 0.8)Z -3 (0)

(0/ 16) (0/ 4) (0/ 4)

Cs-137 (20) 0.06 -1.81 -4 09 1.91 -4 -2.71 -4

( -2.5 - 0.8)Z -3 ( -3.0 - 8.3)Z -4 -1.3 - 1.0)1 -3 (0)

(0/ 16) (0/ 4) (0/ 4)

Non-Routine refers to radionuclides that exceeded the Reporting Levels In ODCM Table E-2

-The fraction of sample analyses yielding detectable measurements (I.e. >3 standard deviations) Is shown In parentheses.

14

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January- December 2004)

MEDIUM: Fish (FH) UNITS: PCI/ka Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine' LLD No. Detected" No. Detected" No. Detected" K-40 (12) 2.2Z 3 29 2.4Z 3 2.21 3 (0) 2.9 - 29.9)Z 2 ( 1.9 - 2.8)Z 3 1.6 - 2.6)Z 3 (7/ 8) (4/ 4) (4/ 4)

Mn-54 (12) 130 -4.52 0 30 1.6Z 0 1.61 0

(-3.1 - 2.2)Z 1 (-6.0 - 8.2)Z 0 -6.0 - 8.2)Z 0 (0)

(0/ 8) (0/ 4) (0/ 4)

Co-58 (12) 1.5Z 1 29 2.1Z1 -1.6Z1

(-6.0 - 90.0) 0 (-6.0 - 90.0)1 0 -3.8 - 0.8)Z1 (0)

(0/ 8) (0/ 4) (0/ 4)

Fe-59 (12) 1.7Z 2 29 2.6Z 2 4.9Z 1

(-1.5 - 100.0)Z 1 (-1.5 - 100.0)E I -2.4 - 15.9)Z 1 (0)

(0/ 8) (0/ 4) (0/ 4)

Co-60 (12) 130 6.21 0 26 1.11 1 1.81 0 (0) ( -4.0 - 19.0)Z 0 ( -4.0 - 19.0)Z 0 -9.0 - 8.0)Z 0 (0/ 8) - (0/ 4) (0/ 4)

Zn-65 (12) 260 -2.7Z 1 30 -1.7Z1 -1.7Z 1 I-7.9 - 1.6)Z1 (-3.6 - 1.8)Z1 -3.6 - 1.8)Z 1 (0)

(0/ 8) (0/ 4) (0/ 4)

Cs-i 34 (12) 130 1.7Z 0 26 7.0Z 0 3.4 0

(-1.4 - 2.7)1 1 I-1.4 - 2.7)1 1 -1.6- 1.3)Z1 (0)

(0/ 8) (0/ 4) (0/ 4)

Cs-1 37 (12) 150 1.2Z 1 29 1.5Z1 6.11 0

( 1.3 - 38.0)Z 0 ( 1.3 - 38.0)Z 0 -8.0 -16.2)Z 0 (0),

(0/ 8) (0/ 4) (0/ 4)

I Non-Routine reters to radionuclides that exceeded the Reporting Levels In ODCM Table E-2

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

15

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January - December 2004)

MEDIUM: Sediment (SE) UNITS: DCk/ka dry Indicator Stations Station With Highest Mean Control Stations Radionuclides Moan Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine' LLD No. Detected" No. Detected" No. Detected" Be-7 (6) 3.61 2 29 4.31 2 4.2Z 2

( 1.2 - 5.4)1 2 ( 3.1 - 5.4)E 2 3.0 - 80.0)Z 1 (0)

(1/ 4) (l/ 2) (1/ 2)

K-40 (6) 1.1Z 4 28 1.1Z 4 1.11 4

( 1.1 - 1.2)Z 4 I 1.1 - 1.2)1 4 9.2 - 12.0)Z 3 (0)

(4/ 4) (2/ 2) (2/ 2)

Co-58 (6) -1.5Z 1 30 -1.0Z 1 -1.01 1

( -2.5 - -0.7)z 1 ( -2.0 - -0.1)Z 1 -2.0 - -0.1)Z 1 (0)

(0/ 4) (0/ 2) (0/ 2)

Co-60 (6) 150 1.5Z 1 29 2.6K 1 -2.51 0

( -1.4 - 5.7)Z 1 ( -5.0 - 57.0)Z 0 -1.1 - 0.6)Z 1 (0)

(1/ 4) (1/ 2) (0/ 2)

Cs-1 34 (6) 150 -7.3r 0 30 -4.6K 0 -4.61 0

( -2.1 - 0.5)Z 1 ( -8.2 - -1.0)Z 0 -8.2 - -1.0)Z 0 (0)

(0/ 4) (0/ 2) (0/ 2)

Cs-1 37 (6) 180 1.11 2 30 1.2Z 2 1.2Z 2

( 9.4 - 14.1)1 1 ( 9.0 - 15.5)Z 1 9.0 - 15.5)Z1.

(0)

(4/ 4) (2/ 2) (2/ 2)

Th.232 (6) 6.5E 2 28 7.6K 2 7.51 2

( 3.9 - 9.3)E 2 ( 6.9 - 8.3)Z 2 6.1 - 8.8)1 2 (0)

(4/ 4) (2/ 2) (2/ 2)

Non-Routine refers to radionuclides that exceeded the Reporting Levels in ODCM Table E-2

" The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

16

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January - December 2004)

MEDIUM: Shell Fish (SF) UNITS: 0Cika wet Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine' LLD No. Detected" No. Detected" No. Detected" Be-7 (4) -1.3Z 2 27 1.6Z 2 1.65 2 (0) I-1.4 - -1.1)E 2 ( 5.0 - 27.0)Z 1 5.0 - 27.0)Z 1 (0/ 2) (0/ 2) (0/ 2)

K-40 (4) 2.2E 2 27 1.3Z 3 1.3Z 3 (0) ( 1.2 - 3.2)Z 2 ( 5.2 - 20.3)Z 2 5.2 - 20.3)Z 2 (0/ 2) (2/ 2) (2/ 2)

Mn-54 (4) 130 2.55 0 31 2.5Z 0 -2.5Z 0 (0) -5.0 - 1O.O)z 0 (-5.0 - 1O.O)Z 0 (-5.0 - O.O)Z 0 (0/ 2) (0/ 2) (0/ 2)

Co-57 (4) -8.1Z 0 27 -2.0Z -1 -2.0Z -1 (0) -1.1 - -0.5)Z 1 -5.6 - 5.2)Z 0 (-5.6 - 5.2)Z 0 (0/ 2) (0/2) (0/ 2)

Co-58 (4) -1.8E 0 31 -1.85 0 -1.35 1 (0) -5.5 - 2.0)Z 0 -5.5 - 2.0)Z 0 (-2.4 - -0.2)Z 1 (0/ 2) (0/ 2) (0/ 2)

Fe-59 (4) -3.25 1 31 -3.25 1 -3.7Z 1

-5.5 - -0.9)Z 1 -5.5 -- 0.8)Z 1 -4.3 - -3.1)Z 1 (0)

(0/ 2) (0/ 2) (0/ 2)

Co-60 (4) 130 9.35 0 31 9.3Z 0 5.05 -1 (0) 9.0 - 9.5)Z 0 9.0- 9.5)Z 0 -1.1 - 1.2)Z 1 (0/ 2) (0/ 2) (0/ 2)

Zn-65 (4) 260 -4.85 1 27 -1.5Z1 -1.5Z 1

-7.7 - -1.9)5 1 -1.5--1.4)5l -1.5 - -1.4)Z 1 (0)

(0/ 2) (0/ 2) (0/ 2)

Zr-95 (4) O.O 0 27 3.5Z 0 3.5Z 0 (0) -4.0 - 4.0)E 0 1.0 - 6.0)Z 0 C1.0 -6.0)Z 0 (0/ 2) (0/ 2) (0/ 2)

Ru-103 (4) O.O 0 31 O.OZ 0 -2.05Z1 0.0 - O.O)5 0 0.0 - o.o)5 0 -2.1 -- 1.8)Z 1 (0)

(0/ 2) (0/ 2) (0/ 2)

Ru.106 (4) 6.05 0 27 9.95 1 8.8Z 1

-7.0 - 19.0)5 0 ( -4.0 - 180.0)Z 0 -4.0- 180.0)Z 0 (0)

(0/ 2) (0/ 2) (0/ 2)

Ag-1 1Om (4) 1.55 0 31 1.55 0 -1.5Z 1 (0) -1.2 - 1.5)Z 1 ( -1.2 - 1.5)Z 1 -1.7 -- 1.2)Z 1 (0/ 2) (0/ 2) (0/ 2) 17

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January - December 2004)

MEDIUM: Shell Fish (SF) UNiTS: DCi/ka wet Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine' LLD No. Detected" No. Detected" No. Detected" Sb-124 (4) 5.5E 0 27 3.1Z 1 3.1Z 1

-3.9 - 5.0)E 1 ( 0.0 - 6.1)z 1 ( 0.0 - 6.1)Z 1 (0)

(0/ 2) (0/ 2) (0/ 2) 1-131 (4) 3.6Z 1 31 3.6K 1 5.0K 0

(-5.9 - 13.0)E 1 (-5.9 - 13.0)Z 1 -9.0 - 10.0)z 1 (0)

(0/ 2) (0/ 2) (0/ 2)

Cs-1 34 (4) 130 7.8E 0 31 7.8K 0 5.0K -1

( 5.0 - 10.7)E 0 ( 5.0 - 10.7)Z 0 (-1.2 - 1.3)E 1 (0)

(0/ 2) (0/ 2) (0/ 2)

Cs-i37 (4) 150 1.0E I 27 1.6K 1 1.6K 1 (0.0 - 2.0)E 1 ( 4.0 - 28.0)z 0 (4.0 - 28.0)E 0 (0)

(0/ 2) (0/ 2) (0/ 2)

Ba- 140 (4) 4.6E 1 31 4.6 1 3.4K1

( 1.5 - 7.6)E 1 ( 1.5 - 7.6)Z 1 (2.9 - 3.8)Z 1 (0)

(0/ 2) (0/ 2) (0/ 2)

Ce-141 (4) -7.5Z 0 31 -7.5K 0 -1.6E 1

-1.8 - 0.3)E 1 (-1.8 - 0.3)Z 1 (-3.1 - O.O)Z 1 (0)

(0/ 2) (0/ 2) (0/ 2)

Ce-t44 (4) -6.OE 0 27 5.5Z 0 5.5K 0

-5.6 - 4.4)E 1 (-2.8 - 3.9)Z 1 (-2.8 - 3.9)Z 1 (0)

(0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to radionuclides that exceeded the Reporting Levels in ODCM Table E-2

The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses.

18

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January - December 2004)

MEDIUM: ISFSI Sediment (SI) UNITS: nCI/ka dry Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine' LLD No. Detected" No. Detected" No. Detected**

Be-7 (4) 2.5E 1 58 3.2Z 1 NO DATA (0) ( 0.0 - 4.3)E 1 ( 2.0 - 4.3)Z 1 (0/ 4) (0/ 2)

K-40 (4) 1.1Z 4 1.1E 4 NO DATA (0) ( 1.0 - 1.3)E 4 ( 1.0 - 1.3)Z 4 (4/ 4) 58 (2/ 2)

Co-58 (4) 2.2E 0 58 1.3E I NO DATA (0) ( -1.3 - 1.7)Z 1 ( 8.0 - 17.0)Z 0 (0/ 4) (0/ 2)

Co-60 (4) 150 -2.2Z 0 58 6.5Z 0 NO DATA (0) ( -3.4 - 1.2)Z 1 ( 3.0 - lO.O)E 0 (0/ 4) (0/ 2)

Cs- 134 (4) 150 -8.7Z 0 57 -1.5Z 0 NO DATA

( -2.8 - 2.5)Z 1 ( -2.8 - 2.5)Z 1 (0)

(0/ 4) (0/ 2)

Cs-137 (4) 180 2.3E 2 57 3.8K 2 NO DATA (0) ( 6.9 - 47.0)Z 1 ( 3.0 - 4.7)E 2 (4/ 4) (2/ 2)

Th.232 (4) 7.7Z 2 58 8.9K 2 NO DATA (0) ( 6.3 - 9.0)E 2 ( 8.9 - 9.0)Z 2 (4/ 4) (2/ 2)

Non-Routine refers to radionuclides that exceeded the Reporting Levels In ODCM Table E-2

The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

19

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January - December 2004)

MEDIUM: Food Crop (TF) UNITS: oCika Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine LLD No. Detected" No. Detected" No. Detected" K-40 (4) 1.6Z 3 17 1.7E 3 1.7Z 3

( 1.1 - 2.2)1 3 ( 1.3 - 2.1)E 3 ( 1.3 - 2.1)Z 3 (0)

(2/ 2) (2/ 2) (2/ 2)

Coe58 (4) -5.31 0 25 -5.3Z 0 -9.11 0 I -1.3 - 0.2)Z 1 ( -1.3 - 0.2)E 1 ( -9.2 - -9.0)E 0 (0)

(0/ 2) (0/ 2) (0/ 2)

Co-60 (4) 7.11 0 17 1.01 1 1.O 1

( 4.2 - 10.0)t 0 I 9.0 - 11.0)1 0 ( 9.0 - 11.0)Z 0 (0)

(0/ 2) (0/ 2) (0/ 2) 1-131 (4) -4.0z 0 17 1.4Z 1 1.41 1 (0) I -2.4 - 1.6)X 1 I -1.1 - 3.8)1 1 ( -1.1 - 3.8)Z 1 (0/ 2) (0/ 2) (0/ 2)

Cs- 134 (4) 60 -5.9Z 0 17 8.4z 0 8.4Z 0 I -1.7 - 0.5)Z 1 ( 3.0 - 13.8)Z 0 ( 3.0 - 13.8)E 0 (0)

(0/ 2) (0/ 2) (0/ 2)

Cs- 137 (4) 80 4.2E 0 17 6.5Z 0 6.51 0

( 4.0 - 4.4)z 0 ( 2.0 - 11.0)E 0 ( 2.0 - 11.0)E 0 (0)

(0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to radionuclides that exceeded the Reporting Levels in ODCM Table E-2

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

20

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January - December 2004)

MEDIUM: Veaetatlon (TV) UNITS: DCiIka wet Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine' LLD No. Detected" No. Detected" No. Detected" K-40 (28) 3.1E 3 06 3.4z 3 2.4Z 3 2.1 - 4.2)Z 3 C 2.7 - 4.2)Z 3 (1.7 - 3.1)E 3 (0)

(21/ 21) (7/ 7) (7/ 7)

Co-58 (28) _4.1Z 0 18 -7.7Z -1 -1.7Z 0

-3.3 - 1.7)E 1 (-3.3 - 1.7)Z 1 -2.2 - 2.5)Z 1 (0)

(0/ 21) (0/ 7) (0/ 7)

Co-60 (28) 5.0Z -1 18 5.51 0 3.71 0

-2.5 - 2.6)1 1 (-6.6 - 26.0)1 0 (-1.4 - 2.5)Z1 (0)

(0/ 21) (0/ 7) (0/ 7) 1-131 (28) 9.21 0 06 2.21E1 -1.01 0

-1.3 - 2.0)E 2 (-1.3 - 2.0)Z 2 (-1.2 - 0.6)E 2 (0)

(0/ 21) (0/ 7) (0/ 7)

Cs-1 34 (28) 60 -1.51 -1 13 4.1 0Z 4.O 0

(-2.9 - 2.2)1 1 (-1.3 - 2.7)1 1 I-1.3 - 2.7)Z1 (0)

(0/ 21) (0/ 7) (0/ 7)

Cs-1 37 (28) 80 1.11 1 18 2.3Z1 2.0Z 1 4.2)1 1 (-4.0 - 42.0)Z 0 (0.0 - 5.1)Z 1 (0) (-2.1 -

(1/ 21) (1/ 7) (1/ 7)

Non*Routine refers to radionuclides that exceeded the Reporting Levels in ODCM Table E-2

" The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

21

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January - December 2004)

MEDIUM: ISFSI Water (WI) UNITS: DCIllter Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine LLD No. Detected" No. Detected" No. Detected" H-3 (4) 2000 1.4Z 2 1.4! 2 NO DATA (0) ( -8.0 - 32.0)Z 1 -8.0 - 32.0)! 1 (0/ 4) (0/ 4)

Mn-54 (4) 15 -6.9Z -1 -6.9Z -1 NO DATA (0) ( -2.7 - 1.3)Z 0 -2.7 - 1.3)! 0 (0/ 4) (0/ 4)

Co-58 (4) -1.2Z -1 -1.2z -1 NO DATA (0) ( -1.8 - 0.8)! 0 -1.8 - 0.8)! 0 (0/ 4) (0/ 4)

Fe-59 (4) -2.1Z 0 -2.1! 0 NO DATA (0) -4.6 - 1.1)z 0 -4.6 - 1.1)Z 0 (0/ 4) (0/ 4)

Co-60 (4) 15 -6.3Z -1 -6.3Z -1 NO DATA (0) -1.6 - 0.4)z 0 -1.6 0.4)Z 0 (0/ 4) (0/ 4)

Zn-65 (4) 30 -1.7Z 0 -1.7! 0 NO DATA (0) -2.7 - 0.0)Z 0 -2.7 - 0.0)! 0 (0/ 4) (0/ 4)

Zr-95 (4) 1.7Z 0 1.7Z 0 NO DATA (0) -1.0 - 24.0)Z -1 -1.0 - 24.0)Z -1 (0/ 4) (0/ 4) 1-131 (4) 5.6Z 1 5.6Z 1 NO DATA (0) 0.0 - 2.2)! 2 0.0 - 2.2)Z 2 (0/ 4) (0/ 4)

Cs-1 34 (4) 15 1.7! -1 1.7! -1 NO DATA (0) -1.8 - 1.4)! 0 -1.8 - 1.4)Z 0 (0/ 4) (0/ 4)

Cs-i 37 (4) 18 1.1Z 0 57 1.1! 0 NO DATA (0) ( -6.0 - 35.0)! -1 ( -6.0 - 35.0)! -1 (0/ 4) (0/ 4) -

Ba-140 (4) 2.0! -1 57 2.0Z -1 NO DATA (0) ( -1.5 - 2.7)! 0 ( -1.5 - 2.7)! 0 (0/ 4) (0/ 4)

Non-Routine refers to radlonuclides that exceeded the Reporting Levels in ODCM Table E-2

The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown in parentheses.

22

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January - December 2004)

MEDIUM: River Water (WR) UNITS: yCMIlter Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine' LLD No. Detected" No. Detected" No. Detected" H-3 (8) 2000 -4.1Z 2 30 -1.2E 2 -1.2Z 2 (0) -7.2 - -0.3)Z 2 (-3.1 - 1.9)Z 2 -3.1 - 1.9)Z 2 (0/ 4) I0/ 4) (0/ 4)

Mn-54 (8) 15 -5.3Z -1 28 -5.3Z -1 -1.2E 0 (0) -2.4 - 1.9)E 0 (-2.4 - 1.9)Z 0 -2.3 - -0.5)E 0 (0/ 4) (0/ 4) (0/ 4)

Co-58 (8) 2.0Z 0 28 2.0Z 0 -1.7E 0 (0) (-1.8- 4.1)z 0 (-1.8 - 4.1)z 0 -3.7 - -0.1)Z 0 (0/ 4) (0/ 4) (0/ 4)

Fe-59 (8) -4.OE 0 30 -3.3E 0 -3.3Z 0 (0) -1.6- 0.1)z 1 (-1.3 - 0.4)E 1 -1.3 - 0.4)E 1 (0/ 4) (0/ 4) (0/ 4)

Co-60 (8) 15 4.0O -1 30 7.8 -1 7.8Z -1 (0) -4.0 - 15.0)Z -1 (-1.9 - 2.6)Z 0 -1.9 - 2.6)Z 0 (0/ 4) (0/ 4) (0/ 4)

Zn-65 (8) 30 -3.5E 0 30 1.5z 0 1.5K 0 (0) -5.3 -1.7)E 0 (-2.9 - 5.5)Z 0 -2.9 - 5.5)t 0 (0/ 4) (0/ 4) (0/ 4)

Zr-95 (8) -3.0Z -1 28 -3.0Z -1 -4.3E 0 (0) -2.5- 4.3)E 0 (-2.5 - 4.3)Z 0 -1.0 - 0.0)Z 1 (0/ 4) (0/ 4) (0/ 4) 1-131 (8) 6.8Z 4 28 6.8Z 4 -8.5E 4 (0) (-3.0 - 270000.0)Z 0 (-3.0 - 270000.0)Z 0 -3.4 - O.O)E 5 (0/ 4) (0/ 4) (0/ 4)

Cs-134 (8) 15 1.0Z -1 28 1.0K -1 -1.5Z -1 (0) (-1.7 - 0.7)E 0 (-1.7 - 0.7)Z 0 -1.7 -1.5)K 0 (0/ 4) (0/ 4) (0/ 4)

Cs- 137 (8) 18 -9.1z -1 30 -5.8Z -1 -5.8Z -1 (0) (-1.7 - 0.3)Z 0 (-1.7 - 0.6)Z 0 -1.7- 0.6)Z 0 (0/ 4) (0/ 4) (0/ 4)

Ba-140 (8) 2.1Z 3 28 2.1Z 3 -1.2Z 3 (0) (-3.0 - 8200.0)Z 0 ( -3.0 - 8200.0)Z 0 -4.9- 0.0)Z 3 (0/ 4) (0/ 4) (0/ 4)

Non-Routine refers to radionuclides that exceeded the Reporting Levels In ODCM Table E-2

The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

23

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.1 Radiological Environmental Program Summary Connecticut Yankee Nuclear Power Co., Haddam Neck Station (January . December 2004)

MEDIUM: Well Water (WW) UNITS: _vCU/iter Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range Non-Routine LLD No. Detected" No. Detected" No. Detected" H-3 (7) 2000 1.3E 1 is5 1.3Z 1 -7.0Z 1 (0) ( -7.7 - 4.4)Z 2 (-7.7 - 4.4)Z 2 ( -3.3 - 0.9)Z 2 (0/ 4) (0/ 4) (0/ 3)

Mn-54 (7) 15 -7.6Z -1 15 -7.6Z -1 -7.7Z -1 (0) ( -2.8 - 0.4)Z 0 ( -2.8 - 0.4)Z 0 (-2.4 - 0.1)Z 0 (0/ 4) (0/ 4) (0/ 3)

Co-58 (7) -5.4Z -1 15 -5.4Z -1 -1.7K 0 (0) (-1.4 - 0.3)Z 0 (-1.4 - 0.3)E 0 ( -2.7 - -0.9)E 0 (0/ 4) (0/ 4) CO/ 3)

Fe-59 (7) -9.5z -1 15 -9.5K -1 -4.7Z 0 (0) (-4.2 - 3.4)Z 0 ( -4.2 - 3.4)E 0 ( -1.3 - O.1)Zl C(/ 4) (0/ 4) (0/ 3)

Co-G0 (7) 15 9.9Z -1 15 9.9K -1 -1.2Z 0 (0) C-4.3 - 37.0)t -1 ( -4.3 - 37.0)Z -1 -2.6 - 0.5)Z 0

- (0/4) (0/ 4) (0/ 3)

Zn-65 (7) 30 -2.0Z 0 16 4.3Z 0 4.3Z 0

-5.9 - 2.1)Z 0 ( -8.7 - 11.5)E 0 -8.7 - 11.5)Z 0 (0)

(0/ 4) (0/ 3) (0/ 3)

Zr-95 (7) 1.3Z 0 15 1.3K 0 -2.9Z 0 (0) -3.0 - 7.2)K 0 ( -3.0 - 7.2)E 0 C-5.7 - -0.1)Z 0 (0/ 4) (0/ 4) CO/ 3) 1-131 (7) 2.3Z 1 15 2.3Z 1 -2.7Z 0 (0) C -9.0 - 90.0)Z 0 ( -9.0 - 90.0)E 0 C-8.8 - 2.5)Z 0 CO/ 4) (0/ 4) (O/ 3)

Cs-134 (7) 15 1.6E -1 15 1.6Z -1 -8.0Z -1 (0) -3.8 - 3.2)Z 0 (-3.8 - 3.2)Z 0 C-1.0 - -0.7)E 0 (0/ 4) (0/ 4) (0/ 3)

Cs-137 (7) 18 1.3Z -1 15 1.3Z -1 -3.7z -1

-5.0 - 13.0)Z -1 ( -5.0 - 13.0)Z -1 -2.4 - 2.8)Z 0 (0)

(0/ 4) (0/ 4) (O/ 3)

Ba-140 (7) 2.3Z 0 15 2.3Z 0 -2.3Z 0

-6.3 - 11.0)Z 0 ( -6.3 - 11.0)Z 0 -6.4 - 0.3)E 0 (0)

CO/ 4) (0/ 4) (0/ 3)

Non-Routine refers to radionuclides that exceeded the Reporting Levels In ODCM Table E-2

" The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown in parentheses.

24

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.2 Environmental TLD Measurements 2004 ENVIRONMENTAL TLD DATA

SUMMARY

CONNECTICUT YANKEE NUCLEAR POWER STATION (JANUARY - DECEMBER 2004)

(uRlr)

CONTROL TLDS HIGHEST MEAN (14- EXTRA TLDS ISFSI TLDS INDICATOR TLDs -

C)

MEAN MEAN MEAN RANGE MEAN RANGE RANGE (NO.

RANGE MEAN (NO. MEASUREMENTS) RANGE (NO. MEASUREMENTS)- MEASUREMENTS)-

(NO. MEASUREMENTS)-

6.0 +/- 0.4 6.0

0.9 7.5

0.4 7.0

1.6 7.0 t 0.5 5.1 6.7 5.0 8.0 7.1 - 8.0 5.4 10.9 6.1 - 8.1 40 16 4 36 20

Each 'measurement' Is based typically on quarterly readings from five TLD elements. Units are micro-R per hour.

25

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Table 3.3 ENVIRONMENTAL TLD MEASUREMENTS 2004 (Micro-R per hour)

ANNUAL Sta. 1ST QUARTER 2ND QUARTER 3RD QUARTER 4TH QUARTER AVE.

V1. MP. D EXP. j E-P. fiS EX SD E .

CY-1-1 Onsite Disharge Can 5.66 t 0.24 5.66 a 0.41 6.03 a 0.44 5.25 a 0.17 5.7 CY-2-l Haddam Park Road 5.65 t 0.30 5.78 a 0.41 5.67 a 0.35 5.22 a 0.14 5.6 l l CY-3-l Haddam Jail Hill Rd. 6.00 t 0.31 6.43 a 0.44 6.10 a 0.33 5.98 a 0.15 6.1 L CY4-1 Haddam Ranger Road 5.27 a 0.29 5.32 a 0.38 5.11 a 0.27 5.23 a 0.13 5.2 CY-S-I Onsite Injun Hol Rd. 6.70 0.38 6.60 a 0.55 6.38 a 0.52 6.36 a 0.17 6.5 t ffCY4-l- Onsite Substation 6.22 t 0.33 6.06 a 0.53 5.57 a 0.24 5.85 a 0.15 5.9 L CY-7-1 Haddam 6.41 t 0.36 6.68 a 0.51 6.29 a 0.33 6.47 t 0.32 6.5 CY.8-1 East Haddam 6.11 t 0.32 5.85 a 0.40 6.54 a 0.26 6.11 a 0.22 6.2 CY.9-I Higganum 6.19 t 0.20 5.84 a 0.45 5.72 a 0.36 5.80 a 0.16 5.9 CY-10-1 Hurd Park Road 6.27 t 0.29 6.36 a 0.56 6.20 a 0.29 6.37 a 0.19 6.3 CY-11-C Middletown 5.44 t 0.25 5.49 a 0.40 5.13 a 0.34 4.99 a 0.17 5.3 CY-12-C Deep River 6.14 t 0.32 5.92 a 0.41 5.80 a 0.37 5.82 a 0.20 5.9 CY-13-C North Madison 5.21 a 0.41 5.31 a 0.38 4.90 a 0.28 4.99 a 0.15 5.1 CY-14-C Colchester 7.18 a 0.25 .7.61 a 0.62 7.56 t 0.33 7.06 a 0.16 7.4 CY.40-X Near Intake Structur 6.86 a 0.25 5.40 a 0.59 5.42 a 0.24 5.57 a 0.20 5.8 CY-41-X Picnic area 5.69 a 0.19 5.60 a 0.40 5.54 a 0.31 5.51 a 0.21 5.6 CY-42-X Environmental Trail 9.36 a 0.64 7.93 t 0.65 7.93 a 0.40 7.54 a 0.21 8.2 CY-43-X Moodus-Rts 149&151 6.74 a 0.38 7.04 a 0.50 7.17 a 0.39 6.65 a 0.35 6.9 CY-44-X Shailerville Hoaron Rd. 5.61 a 0.26 6.08 a 0.46 5.82 a 0.34 5.67 a 0.14 5.8 CY-45-X Old Waste Gas Sphere 10.91 a 0.66 9.58 t 0.70 10.03 a 0.80 9.51 t 0.50 10.0 CY-46-X Discharge Canal Fen 7.16 t 0.46 6.85 a 0.53 8.70 a 0.48 9.67 a 0.26 8.1 UL

? CY.47.X CY-48-X Visitor Info Center Met Shack 7.42 5.45 t t 0.43 0.50 6.30 5.68 a

a 0.44 0.48 5.97 5.58 a

a 0.47 0.26 6.30 6.48 a

a 0.31 0.36 6.5 5.8 CY-52-IF Schmidt Cemetery Onsite-- 5.84 a 0.31 6.58 a 0.44 6.08 a 0.26 6.52 t 0.36 6.3 CY.53-IF ISFSI Haul Route Onsite-- 6.63 a 0.26 7.17 a 0.50 6.69 a 0.33 7.47 t 0.18 7.0 CY564-IF RT 149 Salmon River- 7.15 a 0.23 7.01 a 0.47 7.87 a 0.70 8.10 a 0.25 7.5 CY-55-lF HV Tower NW of Pad" 6.82 a 0.52 7.00 a 0.55 7.04 a 0.63 7.17 a 0.22 7.0 t I CY-56-lF Burrow Pit Onsite-- 6.94 t 0.34 6.80 t 0.50 7.17 t 1.34 7.00 t 0.17 7.0 Extra TLD locations not required by the REMODCM ISFSI TLD Locations 26

Had dam Neck Station Annual Radiological Environmental Operating Report 2004 AL 4.0 ANALYSIS OF ENVIRONMENTAL RESULTS L 4.1 Sampling Program Deviations The Radiological Effluent Monitoring Manual (REMM) states in Section E. 1 that the environmental sampling and analysis program shall be conducted as specified in Table E-l for locations shown in Appendix G of the ODCM. Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions, seasonal unavailability, malfunction of automatic sampling equipment or other legitimate reasons. If specimens are unobtainable due to sampling equipment malfunction, every effort shall be made to complete corrective action prior to the end of the next L sampling period.

U All deviations from the sampling schedule shall be documented in the Annual Radiological Environmental Operating Report pursuant to Section F.1 of the REMM. The following deviations are noted for the 2004-sampling program:

L

Air Particulate Station 13-C was found unpowered due to a faulty or loose power cord on January 12, 2004.

The sample collected was determined to be partially collected based on the sample volume recorded.

Appropriate notifications were made and the condition was resolved.

Li The well water sample collected on January 12'h for Station 16-C was not analyzed by FANPEL due to human error in logging the sample.

L No ISFSI water samples were collected from Station 58-IF (pad area drainage pipe) due to lack of water on l January 12'h. June 28'h, and October 4"'.

On February 9"', Air Particulate Station 7-1 was found off due to faulty on/off switch. The sample collected was a "void" sample. CY was notified to repair the switch. The switch was replaced and the station was Li back on line prior to the next collection date.

Due to unavailability, broad leaf vegetation samples were not collected from stations 6-I, 13-C, 18-I and 41-Li X during April. Due to the cool spring, leaf development was not at a stage where sampling was feasible.

A river water composite sample was collected from Station 28-I on June 14'h. The ISCO river water sample at Station 28-I sampler sent a low voltage alarm at 2200 hrs on June 2 1SI; it was not clear whether any L sample loss occurred. This alarm was resolved by CY personnel on June 22 d.

I* The river water composite sample collected at Station 28-I sent an alarm message on September 15"' and L 20'D. The situation on the 15"' was quickly resolved; the situation on the 20"' required parts to be ordered.

The pump was put back into operation the next day at 1300 hours0.015 days 0.361 hours 0.00215 weeks 4.9465e-4 months with only minor loss in sample collection.

L . On November 29"', the pump at Air Particulate Station 7-I was found unplugged and not collecting on a continuous basis. However, the sample volume collected was still within the valid range for sample analysis.

L

The river water composite sample at Station 28-I alarmed on December 19"' (pump hose wear counter) and I 1 was put back into service at 1600 hours0.0185 days 0.444 hours 0.00265 weeks 6.088e-4 months on December 21" with only minimal loss of sample.

Broad leaf vegetation samples were not collected from Stations 6-I, 13-C, 18-I, and 41-X due to lack of availability in December 2004 (end of growing season).

27

Haddara Neck Station Annual Radiological Environmental Operating Report 2004 L In addition to the sample deviations listed above, several 2003 samples were not reported in the 2003 Annual Radiological Environmental Operating Report for Connecticut Yankee. These analyzed samples were not released into CY sample database until after the 2003 report was prepared and submitted. No unusual results or positive indicator of plant related L radioactivity was noted in these data sets. The following is a list of the missed samples from 2003. The details of these samples are included in Appendix D.

Media Station LSN End Date Fish 29-I L7551-01 06/09/2003 Broad Leaf Vegetation 06-I L6447-01 11/03/2003 13-C L6447-02 11/0312003 18-I L6447-03 11/03/2003 41-X L6447-04 11/03/2003 A.P. Gross Beta 05-1 L6596-01 12101/2003 06-1 L6596-02 12101/2003 07-1 L6596-03 12/01/2003 09-1 L6596-04 12/01/2003 13-C L6596-05 12/01/2003 28

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 4.2 Comparison of Achieved LLD with Requirements L Table environmental analyses.(Table REMODCM E-3 of thesample 2.3 in thisanreport)

On occasion, notthe LLD islists achieved dueLower required Limits of to situations Detection such samplefor as a low(LLDs) routineIn such volume.

a case, the REMODCM requires the identification and discussion of the contributing factors in the Annual Radiological Environmental Operating Report. At the FANPEL, the target LLD for any analysis is typically 30-40 percent of the most restrictive required LLD. Expressed differently, the typical sensitivities achieved for each analysis are at least 2.5 to 3 times lI better than that required by the REMODCM.

For each analysis having an LLD requirement, the a posteriori or after the fact LLD (or minimum detectable concentration-MDC) calculated for that analysis was compared with the required a priori LLD. More than 300 analyses were performed with a specified LLD requirement for 2004. All the samples analyzed met the required detection limits.

4.3 Results Compared Against Reporting Levels The REMODCM Section E requires the written notification to the NRC within 30 days whenever a Reporting Level in ODCM Table E-2 is exceeded (Table 2.4 in this report). Reporting Levels are the environmental concentrations that relate to Ll the ALARA design dose objectives of 10 CFR 50, Appendix I. It should be noted that environmental concentrations are averaged over calendar quarters for the purposes of this comparison, and that Reporting Levels apply only to measured levels of radioactivity due to plant effluents. During 2004, no Reporting Levels were exceeded.

U. 4.4 Data Analysis by Media Type

! The 2004 REMP data for each media type are discussed below categorized by pathway. Graphical plots of monitoring data are also shown in Figures 4.1 to 4.11. With respect to data plots, all values are plotted, whether they are "detectable" or "non-detectable."

29

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 4.4.1 Air Particulate Gross Beta Radioactivity Air particulates are collected on glass fiber filters bi-weekly at four indicator locations and one control location, and analyzed Ifor gross beta radioactivity. Gamma isotopic analyses are performed on the quarterly composites of each location.

As shown in Figure 4.1, there is no significant difference between the average gross beta concentration at the indicator I stations and the control station. Notable in the graph is the distinct annual cycle.

I Figure 4.1 Gross Beta Measurements on Air Particulate Filters I (Quarterly Averages) 0.07 0.07 I - -Control Stations I Indicator Stations 0.06 0.06 0.05 0.05 0.04 0.04

.2 _

U0 .

0.03 0.03 0.02 0.02 0.01 k, ,-C ,3~- ,NF . 0.01 0 0 1997 1998 1999 2000 2001 2002 2003 2004 30

Haddam Neck Station Annual Radiological Environmental Operating Report 2004

Figure 4.2 shows the biweekly gross beta concentrations at each sampling location required by the ODCM along with the control station in North Madison. The gross beta concentration is seen to fluctuate over the year due to seasonal changes in the naturally occurring airborne radioactivity. The gross beta concentrations at the indicator stations are similar to the control station and fluctuate in the same manner.

FIgure 4.2 Connecticut Yankee Running 12 Month Bi.Weekly Air Particulate Gross Beta Analysis Results 6.OE -__

A-A

- Station 5

-- -Station I50E-02-- Station 7 S Station 9 4.OE-02 -- Station 13 I3.0OE-02 - ._ _ - - -- _

2.0OE-02 - ..-

l.OE3-02 - _ _ -__

1/1 1/15 1129 2/12 2(26 3111 3/25 4/8 4/22 5/6 5/20 6/3

-A A 6/17 7/1 7/15 7/29 8/12 8/26 9/9 9/23 10fl 10/21 11/4 Il/It 12/2 12/16 12/3 Sample Reference Date (2003 - 2004)

The quarterly composites of the bi-weekly air particulate filters are also analyzed for gamma radioactivity. The results, shown

-sin Tablls 3e int ndicate the presencefnaturally d occurring Be-7, which is produced by cosmic processes. No positive results in Tabiulies3.andiH-ateN the presence m ofincie o eedtetdi 04 were observed for all the other isotopes.

4.4.2 River Water River water composite samples were collected quarterly during 2004. The quarterly composites were analyzed for gamma radionuclides and H-3. No gamma emitting radionuclides or H-3 were detected in 2004.

44.4.3 Well Water In 2004, samples of water from the onsite wells (location 15) and control station (location 16) were taken quarterly. The on-I site wells have in the past indicated the presence of station related H-3. The H-3 is believed to result from the wells proximity to an area influenced by the water in the discharge canal and the ability of H-3 to migrate. In recent years it was discovered that there was a leak in the Reactor Water Storage Tank (RWST) that migrated to the ground water. This tank was I subsequently drained and is now abandoned. As a part of the decommissioning process, a series of groundwater monitoring wells were installed. The results of the ground water monitoring evaluation can be found in the "Malcolm Pirnie Ground Water Monitoring Report for Connecticut Yankee Atomic Power Company, Final Report, September 1999."

31

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Ireplacement A downward trend has been observed in the H-3 concentration from the onsite wells since cycle 17 in 1992 due to the of stainless-steel clad fuel with zircaloy clad fuel. The levels of H-3 observed since permanent shutdown in July 1996 represent residual levels of tritium that remain in station process liquids and/or groundwater from beneath the site that are gradually dropping to natural background levels. For 2004, no H-3 was detected in either the indicator or the control stations.

Figure 4.3 shows the H-3 concentration in CY on-site wells since 1988. The concentrations plotted for 2004 represent statistically non-positive H-3 concentrations.

Figure 4.3 I H-3 Levels in On-site Wells 7000 pCi/I 6000 -

/1 -X- non-positive 5000 -

4000 , II S

Q 2000 - i I I 1 -

1000-E 0*

-1000 -

-2000 Iadme.......... ,,,,,,

1Q88 IQ89 1Q90 IQ91 1Q92 1Q93 1Q94 1Q95 1Q96 1Q97 1Q98 1Q99 IQOO IQO 1Q02 1Q03 1Q04 Year 32

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 4.4.4 Bottom Sediment Semiannual grab samples of river bottom sediments were collected, dried and analyzed for gamma emitting radionuclides.

Cs- 137 was detected in all four samples. Figure 4.4 shows that historically, Cs- 137 has been detected at both the control and indicator locations indicating that the likely source is weapons fallout. One of the samples collected at the indicator station in the vicinity of the discharge also contained Co-60. The level of Co-60; measured in 2004 is bounded by concentrations observed in previous years as shown in Figure 4.5. No other indications of station related radioactivity were observed in this sample media. Naturally occurring K-40 and Th-232 were also detected in all of the samples.

Figure 4A

CS-137 IN SEDIMENT

2000 2000

- Station 28

Station 29

-- *- Station 30

- - * - Station 28 Positive Analysis 1 1500

- Station 29 Positive Analysis 1500

- U - Station 30 Positive Analysis I 1000 1000 I

1 500 500

0 _.r 0 onA J Ii00 Mar-98 Sep-98 Mar-99 Sep-99 Mar-00 Sep-00 Mar-01 Sep-01 Mar-02 Sep-02 Mar-03 Sep-03 Mar-04 Sep-04 33 6<

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Figure 4.5 CO-60 IN SEDIMENT 2000 2000 1500 1500 1000 1000 2

500 500 0 0

-500- ,I -500 Mar-97 Sep-97 Mar-98 Sep-98 Mar-99 Sep-99 Mar-00 Sep-00 Mar-01 Sep-01 Mar-02 Sep-02 Mar-03 Sep-03 Mar-04 Sep-04

4.4.5 Fruits and Vegetables Four vegetable samples analyzed for gamma emitting nuclides indicate only the presence of naturally occurring K-40.

I 4.4.6 Broad Leaf Vegetation Vegetation was collected from two indicator and one control station. In addition, samples were collected from an extra sampling location, 41-X, that is located onsite near a point of predicted maximum deposition for the plant if actual releases

were to occur. K-40 was observed in all the samples and Cs-137 was detected in one out of twenty one samples from indicator stations and one out of seven samples from the control station. The source of this non-edible vegetation is taken from shrubs/woody plants coincidentally growing at the specific monitoring location. The varying amount of Cs-137 present in the samples is likely due to different Cs- 137 soil concentrations and uptake rates from the soil.

I 4.4.7 Shellfish Shellfish samples were collected semiannually from two locations. Naturally occurring K-40 was detected in two control samples. No other gamma emitting radionuclides were detected in the samples.

4.4.8 Fish Multiple fish samples were collected semiannually at three locations. The species collected in 2004 were perch, bullheads and catfish. K-40 was detected in seven of the eight samples from indicator stations and all control station samples.

34

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 4.4.9 Gamma Exposure Rate Direct radiation is continuously measured at 14 locations surrounding Haddam Neck Station and at nine extra on-site locations with thermoluminescent dosimeters (TLDs). The extra on-site locations are not part of the REMP but are used to monitor the impact of on-site decommissioning activities on the site boundary doses. All TLDs are collected quarterly for readout at the FANPEL.

3 Tables 3.2 and 3.3 show the mean exposure rates for the Indicator and Control categories do not vary significantly in 2004.

As shown in Figure 4.6, there is a distinct annual cycle at both indicator and control locations. The lowest point of the cycle I occurs during the winter months. This is due primarily to the attenuating effect of the snow cover on radon emissions and on direct irradiation by naturally-occurring radionuclides in the soil. Differing amounts of these radionuclides in the underlying soil, rock or nearby building materials result in different radiation levels between one field site and another.

I Figure 4.6

Average Exposure Rate at Indicator, Control and Extra TLDs 15.00 - - 15.00 10.00 I1_

5.00 -_

0.00 1998 1999 2000 2001 2002 2003 2004 2005 I Figure 4.7 shows the exposure rate at all the Indicator TLD locations. In 2000, the TLDs (Victoreen glass bulb CaF (Mn))

2 which had historically been used to measure direct radioactivity around Connecticut Yankee for over 20 years were replaced with Panasonic model UD-804 AS 1 TLD. The changeover occurred in February of 2000. The Victoreen glass bulb type I TLDs were subject to inherent self-irradiation which was experimentally measured for each dosimeter. This correction for field dosimeters averaged approximately 1 pR/hr. In general, the new Panasonic monthly dosimeters show an average decrease in measured exposure rate by -20% compared to the historical average determined by the Victoreen monthly I dosimeters.

35

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Figure 4.7 Exposure Rate at Indicator Locations 14 12 10 6

4 2

0 1998 1999 2000 2001 2002 2003 2004 2005 Figure 4.8 shows the exposure rate at the nine Extra TLD locations used to monitor more closely on-site decommissioning I activities. An increased exposure rate was observed at on-site location #45-X throughout the 2000 and into 2002. This increase was noted toward the end of 1999, coincident with the removal of the steam generators and pressurizer from containment. These components were temporarily stored in the Southeast corner of the Industrial Area 700 feet from location I #45-X. The increase in exposure rate due to these components is a localized effect and does not affect an increase in exposure beyond the owner controlled area. The steam generators, reactor head and pressurizer were shipped off site between the second and fourth quarter of 2002. TLD measurements throughout the year 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.

36 C4?

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Figure 4.8 Exposure Rate at Extra TLD Locations 20 18 16 14

'- 12 10 I-

g 8 6

4 2

0 1998 1999 2000 2001 2002 2003 2004 2005 37 C 9

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 4.4.10 ISFSI Gamma Exposure Rate L In the second quarter of 2003, additional sampling locations associated with the placement on-site of an Independent Spent Fuel Storage Installation (ISFSI) were selected for the purpose of collecting baseline background information prior to the transfer of spent fuel from the main plant to the ISFSI. These new locations are specific to the ISFSI and are beyond the L standard REMP that has been in operation over the life of the power plant's license. New quarterly TLD locations were located in the area surrounding the facility at distances that approximated the site boundary to support future determinations Vt that direct and scatter dose from ISFSI operations remain in compliance with offsite dose limits to the public.

In addition, two locations associated with a hypothetical water pathway were selected for sediment and water sample LL l collections to help confirm that ISFSI operations will have no impact on the wetlands. Figure 4.9 shows the CS-137 levels that exist at both ISFSI sediment locations. Table 3.1 shows that no plant-related nuclides were identified in any of these samples.

L Figures 4.9, 4.10 and 4.11 compare the 2004 ISFSI TLD results with the baseline measurements taken before the first ISFSI canister was placed on the storage facility on April 20,2004.

U Li Figure 4.9 Average Exposure Rates at ISFS1 TLDs I . ,Z 15.W I -+-ISFSITLDs 10.00 L. Ist ISFSI on pad

-8L. (April 20. 2004)

E.

X 9

5.uu I 0.00 Mar;03 Jun-03 Sep-03 Dec-03 Mar-04 Jun-04 Sep-04 Dec-04 Mar-05 38

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 FIgure 4.10 Average Exposure Rates at ISFSI TLDs 15- 15 l + ISFSI TLDsl 10 tlaIFSI on pad 1(Ail 20,2004) 5 2Q03 3Q03 4Q03 1Q04 2Q04 3Q04 4Q04 39

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Figure 4.11 Exposure Rate at ISFSI TLD Locations 52x 14.00 . 53x

+ 1 54x 12.00 .. .. _ . .. 56x 10.00 1st ISFSI on Pad (April 20, 2004) 6 8.00 2 6.00 4.00 2.00 0.00 _

Mar-03 Jun-03 Oct-03 Jan-04 Apr-04 Aug-04 Nov-04 Feb-OS 40 C/D

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 5.0 OFF-SITE DOSE EQUIVALENT COMMITMENTS Li The purpose of this section is to evaluate off-site dose consequences (dose equivalent commitments) associated with the stations' radioactive liquid and airborne effluents. The method utilizes Regulatory Guide 1.109 / REMODCM models and actual measurements of the concentrations of radioactivity in environmental media to compute the dose consequences resulting from the consumption of these foods.

L The standards for the maximum dose to an individual of the general public, taken from 40CFR190, is 25 mRem to the whole body,75 mRem to the thyroid and 25 mRem to any other organ. These standards are a fraction of the average USA background radiation of 300 mRem per year given in NCRP94.

Li During 2004, Co-60 and Cs-137 (mostly from weapons fallout) was identified in the bottom sediment in the area of the plant U discharge. Although Co-60 is attributable to plant related operations in past years, these samples represent a pathway that is not involved with a significant exposure to the public. No Cs-137 was detected in any of the ingestion pathway (food crop, dish, shellfish, water) samples for 2004.

U However, 2 out of 28 broad leaf vegetation (non-food species) samples collected over 24 indicated positive Cs-137, with an average concentration of 46.5 pCi/kg (wet). If it was assumed that this was equivalent to food product broad leaf vegetation concentrations, the potential annual dose commitment to maximum exposed individual would be 0.4 mrem (bone, child) based on the conservation ingestion rates of broad leaf vegetables from Regulatory Guide 1.109. If applied to the plant as the source, this dose is only 1.6% of the standard dose limit for the general public of 25 mrem/year. It should be noted that the two positive samples include both a control location offsite as well as a site boundary location. The source of the Cs-137 Ul appears to be from past weapons fallout and not Connecticut Yankee.

41

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 References

1. USNRC Radiological Assessment Branch Technical Position, "An Acceptable Radiological Environmental Monitoring Program," Revision 1, November 1979.

2. NCRP Report No. 94, Exposure of the Ponulation in the United States and Canada from Natural Background Radiation, National Council on Radiation Protection and Measurements, 1987.

3. Ionizing Radiation: Sources and Biological Effects, United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), 1982 Report to the General Assembly.

4. Kathren, Ronald L., Radioactivity and the Environment - Sources. Distribution. and Surveillance, Harwood Academic Publishers, New York, 1984.

5. NRC Generic Letter 89-01,

Subject:

Implementation of Programmatic Controls for Radiological Effluent Technical Specifications in the Administrative Controls Section of the Technical Specifications and the Relocation of Procedural Details of RETS to the Offsite Dose Calculation Manual or to the Process Control Program. Dated January 31, 1989.

42

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 APPENDIX A LAND USE CENSUS FOR 2004 A-l

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 2004 Land Use Census Assessment The results of the 2004 Land Use Census are included in this report in compliance with REMODCM Section E-2. The locations identified during the Census are listed in Table A-1. In 2004, Normandeau Associates conducted the Land Use Census and verified the distance and direction for all residence and garden locations with a portable Global Positioning System (GPS).

The CY REMMODCM requires that milk sampling be initiated as part of the REMP if the annual Land Use Census identifies milk animals within 5 km (3 miles) from the site (three indicator locations having the highest dose potential). If no milking animals are located within 5 km (3 miles) then samples of milking animals from three locations between 3 and 5 mile that exceed a dose potential of 1 mrem/year shall be added to the Radiological Environmental Monitoring Program. The 2004 Land Use Census did not find any milk locations within 5 km (3 miles), and did not identify any new milk animal locations between 5-8 km (3-5 miles). However, a dairy farm was identified just outside of 5 miles (5.36 miles) in the NE sector. Also, two goat farms which were identified in the 2002 land use census in the N and SSE sector continue to be in business. However, an analysis of the potential dose impact associated with these locations indicated that none had a potential dose that would be expected to exceed 1 mrem/year (Ref. 2). As a result, milk sampling need not be included as part of the sampling program.

The dose assessment methodology used the milk pathway model from Regulatory Guide 1.109 in conformance with the requirement of the CY ODCM. Both cows and goats were assumed to be on pasture for the entire growing season receiving their entire daily food intake from pasture (i.e., no stored feed). The milk pathway dose analysis also utilized the recorded gaseous effluents from the plant in 2000 as an indicator of reasonable source term. The source term included three particulate species (Co-60 at 85.6% of the particulate total, Cs-137 at 6.6%, and Mn-54 at 7.8%) and tritium. Tritium accounted for over 99.99% of the total radioactivity recorded discharge in gaseous effluents. No iodine is included since these radionuclides (1-131 and 1-133) have been removed from the potential source term due to natural decay and the permanent shut of the plant in 1996. Five-year average historical meteorological dispersion conditions were reviewed to find the most limiting dispersion parameters in any sector from 3 mile or further from the plant. The selected bounding dispersion factors were for the 9 month growing season between April and December for the ESE direction at approximately 3 miles (depleted X/Q = 1.15E-06 sec/m3 and the D/Q = 2.52E-09 I/m2n.Usage factors for animal feed and human uptake were also taken from Regulatory Guide 1.109 as applied to the maximum individual.

The limiting dose to any organ was found to be from goat milk and equaled only 2.64E-03 mrem/year (infant liver). This dose impact is over a factor of 378 times smaller than the 1-mrem/year criteria used to decide if milk samples need to be included in the REMP. This large margin ensures that any expected deviations in annual radioactivity releases from the plant will not cause the predicted dose impact for the milk pathway to exceed 1 mrem/year.

Broad leaf vegetation samples are collected at the site boundary in two different sectors with high DIQ values as indicated in the REMP collection schedule. This media acts as an indicator for ingestion pathways associated with garden food products located beyond the plant site. In 2004, a garden census was conducted in addition to the ongoing required sampling of vegetation at the two site boundary locations, 6-I and 18-I. As shown in Table A.1, there were several changes from the 2002 garden survey noted during 2004. A comparison of the D/Q values indicates that none of the census locations had a 20% higher potential dose commitment than at either of the two boundary locations.

Pursuant to REMODCM Section E-2, any sampling changes resulting from the Land Use Census must be noted in this report. For 2004, no changes in the REMP need to take place.

A-2

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 TABLE A.1 2004 LAND USE CENSUS LOCATIONS SECTOR'.'-' NEAREST, NEAREST ' NEAREST MILK ANIMAL

. ::RESIDENCE ' -'GARDEN -. (Goat)

-K -'Km; ' ,Miles' N 1.18 3.42 4.0 NNE 1.74 2.23

NE 1.69 3.43 5.4**

ENE 1.75 2.39 E 2.12 2.40 ESE 2.75 3.08 SE 1.34 2.07 SSE 1.20 3.9 S 1.04 1.28

SSW 0.93 2.73

SW 1.03 1.24

WSW 1.22 -

W 1.40 1.66

WNW 0.64 3.01

NW 1.09 2.17 NNW 1.55 2.43 '

-- Garden location eliminated in 2003

No cow or goat identified in this sector within 5 miles of the plant.

- Holstein cows identified in 2003.

A-3

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 APPENDIX B Quality Assurance Program B-1

Haddarn Neck Station Annual Radiological Environmental Operating Report 2004 Quality Assurance Program The quality assurance program at the Framatome ANP Environmental Laboratory (FANPEL) is designed to serve two overall purposes: 1) Establish a measure of confidence in the measurement process to assure the licensee, regulatory agencies and the public that analytical results are accurate and precise; and 2) Identify deficiencies in the sampling and/or measurement process to those responsible for these operations so that corrective action can be taken. Quality assurance is applied to all steps of the measurement process, including the collection, measurement and reporting of data, as well as the record keeping of the final results. Quality control, as part of the quality assurance program, provides a means to control and measure the characteristics of the measurement equipment and processes, relative to established requirements.

The FANPEL employs a comprehensive quality assurance program designed to monitor the quality of analytical processing to ensure reliable environmental monitoring data. The program includes the use of controlled procedures for all work activities, a nonconformance and corrective action tracking system, systematic internal audits, audits by external groups, a laboratory quality control program, and a staff training program. Monitoring programs include the Intralaboratory Quality Control Program administered by the Laboratory QA Officer (used in conjunction with the National Institute of Standards and Technology Measurement Assurance Program, NIST MAP) and a third party cross check program administered by Analytics, Inc. Together these programs are targeted to supply QC/QA sources at 5% of the client sample analysis load. In addition the Laboratory Quality Control Audit Committee administers a blind duplicate program conducted through client environmental monitoring programs.

This summary reports all intralaboratory and third party results received by FANPEL on or before December 31,2004.

Intralaboratory Ouality Control Program The FANPEL QA Officer administers an extensive intralaboratory quality control program in which process check samples are submitted for analysis. These samples are "spiked" with a known amount of radioactive material and are routinely submitted in triplicate to evaluate the bias and precision of a measurement process. Table B.1 provides the summary of the process check results for January to December 2004. Of the 665 analyses, 99.4% passed the bias criteria and 99.1% of the 215 results evaluated for precision were acceptable. The FANPEL internal acceptance criteria are summarized at the end of Table B.1.

Third Party Cross Check Program The FANPEL participates in a third party cross check program managed by Analytics Inc. to satisfy the requirement of the Environmental Technical Specification/ODCM. The FANPEL Analytics program was originally used to augment the EPA Intercomparison Program that it now replaces. The current program is designed to be comparable to the pre-1996 EPA PE Program in terms of the number of samples, matrices and nuclides. The results for the 4h quarter 2003 through the 3Yd quarter 2004 are summarized in Table B.2. Each sample is normally analyzed in triplicate and the results are evaluated against the internal acceptance criteria described in the FANPEL Manual 100-Laboratory Quality Assurance Plan. This acceptance protocol is used for all interlaboratory programs with no pre-set acceptance criteria. When results fall outside of the acceptance criteria, an investigation is initiated to determine the cause of the problem and if appropriate, corrective measures are taken. The FANPEL internal acceptance criteria are summarized at the end of Table B.1.

B-2

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Blind Duplicate Program Under the Blind Duplicate Quality Assurance Program, samples are split from homogeneous environmental media by the client and sent to the FANPEL for analysis. They are "blind" in that the identification of the matching sample is not identified to the Laboratory.

Participating clients submitted a total of 23 paired samples in 2004. The measurements evaluated include twenty-six gamma emitting radionuclides, H-3, Sr-89/90, and gross beta. All measurements are evaluated, whether the results are statistically positive or not, and whether the net concentration is positive or negative.

The samples submitted as part of this program are listed in Table B.3. For the 2004 program, 99.8% (486/487) of the measurements met the FANPEL internal acceptance criteria.

Environmental TLD Ouality Assurance ProEram Performance documentation of the routine processing of the Panasonic environmental TLDs (thermoluminescent dosimeter) program at the FANPEL is provided by the dosimetry quality assurance testing program. This program includes independent third party performance testing by Battelle Pacific Northwest Labs and internal performance testing conducted by the Laboratory QA Officer. Under these programs, sets of six dosimeters are irradiated to ANSI specified testing criteria and submitted for processing to the Dosimetry Services Section as "unknowns". The bias and precision of TLD processing is measured against this standard and is used to indicate trends and changes in performance.

Instrumentation checks, although routinely performed by the Dosimetry Services Group and representing between 5-10%

of the TLDs processed, are not presented in this report because they do not represent a true process check sample since the exposures are known to the processor.

Ninety performance tests were conducted in 2004 by FANPEL and the third party tester. These tests were made on 15 separate sets of 6 dosimeters. All of the 15 TLD test sets passed the mean bias criteria of t20.1%. Of the ninety individual measurements, 100% of the dosimeter evaluations met the FANPEL Internal Acceptance Criteria for bias

(+/-20.1%) and precision (+12.8%). Third Party QC results are summarized below.

Percentage of Individual Analyses that passed FANPEL Internal Criteria B-3

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Summary of Third Party Testing Dosimeter Type Exposure Period ANSI Category % (Bias +/- SD)

Panasonic Environmental Q4/2003 II, high energy 4.2 +/- 0.8 Q1/2004 II, high energy -0.3 : 1.0 Q2/2004 II, high energy 2.8 +/- 1.4 Q3/2004 II, high energy 1.6+/-0.3

American National Standards Institute (ANSI) Performance Statistic as referenced in the Dosimetry Services Semi-Annual QA Status Report.

Note: Results are expressed as the delivered exposure for environmental TLD. ANSI HPS N13.29-1995 (Draft) Category 11, High energy photons (Cs-137 or Co-60).

B4

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 TABLE B.1 FANPEL RESULTS IN THE INTRALABORATORY PROCESS CONTROL PROGRAM January - December 2004

- Media Bias Criteria (1) Precision Criteria (2)

Analysis 1 2 3 4 1 2 3 4 I. Air Charcoal Gamma-Quantitative 6 2 0 0 0 0 0 0 Gamma-Screening 83 31 18 0 0 0 0 0

11. Air Filter Beta 243 15 0 0 0 0 0 0 111. Milk Gamma 6 0 0 0 9 0 0 0 IV. Water Gross Alpha 13 13 28 0 2 0 28 0 Gross Beta 22 13 24 4 10 8 12 0 Gamma 53 7 0 0 0 2 56 2 lodine-LL 9 3 1 0 9 3 1 0 Sr.90 11 6 14 0 0 0 34 0 Tritium 31 5 4 0 11 6 22 0 Total Number in Range 477 95 89 4 41 19 153 2 Percentage of Total 71.7 14.3 13.4 0.6 19.1 8.8 71.2 0.9 Processed Sum of Analyses 665 215 (1) Percent Bias Criteria by Bias Category (2) Percent Precision Criteria by Precision Category Bias Category = I > 0% and < = 5% Precision Category = I > 0% and < = 5%

Bias Category = 2 > 5% and < = 10% Precision Category = 2 > 5% and < = 10%

BiasCategory=3> 10%and<= 15%, or Precision Category = 3 > 10% and < = 15%, or within 2 sigma of known within 2 sigma of mean Gross alpha/beta water, Sr 89/90 > 10% and < = 25% Precision Category = 4 Outside Criteria Transuranics > 10% and < = 20%

Bias Category = 4 Outside Criteria B-5

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 TABLE B.2 FANPEL RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2002 - Quarter 3, 2004 Ratio

Sample ' uirter ."Sample " Reported Known 'E-LAB/

Number, Year - Medla , Nuclide Value --Value, Analytics ,Evaluation:

E3937-162 4th/2003 Water H-3 2307 2290 1.01 Agreement E3938-162 4th/2003 Water Sr-89 99 100 0.99 Agreement Sr-90 11 10 1.10 Agreement E3939-162 4th/2003 Filter Gross Alpha 15 16 0.94 Agreement Gross Beta 50 47 1.06 Agreement E3940-162 4th/2003 Filter Ce-141 110 100 1.10 Agreement Cr-51 171 153 1.12 Agreement Cs-134 75 74 1.01 Agreement Cs-137 75 71 1.06 Agreement Co-58 64 61 1.05 Agreement Mn-54 103 95 1.08 Agreement Fe-59 64 56 1.14 Agreement Zn-65 117 108 1.08 Agreement Co-60 82 85 0.96 Agreement E3941-162 4th/2003 Filter Sr-89 103 109 0.94 Agreement Sr-90 11 11 1.00 Agreement 1-131LL by beta-E3942-162 4th/2003 Milk gamma 91 90 1.01 Agreement

-131LL by prop.

counter 89 90 0.99 Agreement 1-131 84 90 0.93 Agreement Ce-141 191 202 0.95 Agreement Cr-51 275 280 0.98 Agreement Cs-134 135 135 1.00 Agreement Cs-137 126 129 0.98 Agreement Co-58 107 111 0.96 Agreement Mn-54 173 173 1.00 Agreement Fe-59 106 102 1.04 Agreement Zn-65 203 197 1.03 Agreement Co-60 148 155 0.95 Agreement E4057-162 1stV2004 Water Gross Alpha 72.3 74.5 0.97 Agreement Gross Beta 286 301 0.95 Agreement E4058-162 1st2004 Water 1-131LL 88.7 90.2 0.98 Agreement 1-131 94 90.2 1.04 Agreement Ce-141 87.5 85 1.03 Agreement Cr-51 335 326 1.03 Agreement Cs-134 86 89.7 0.96 Agreement Cs-137 186 185 1.00 Agreement Co-58 113 112 1.01 Agreement Mn-54 112 114 0.99 Agreement

pCi/Liter (Filters in pCi)

B-6

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 TABLE B.2 (cont'd)

FANPEL RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2002 - Quarter 3, 2003

- Ratio.

Sample Quarter/1 Sample Reporled ':Kown E-LAB/

-:Number .,Year - :Medla'. Nucllde -Valubue : Value . Analytlcss o Evaluation E4058-162 1stt2004 Water Fe-59 60.8 56.7 1.07 Agreement Zn-65 149.1 143 1.04 Agreement Co-60 151.4 153 0.99 Agreement E4060-162 1st/2004 Filter Gross Alpha 48.1 58.9 0.82 Agreement Gross Beta 231 218 1.06 Agreement E4061-162 1st/2004 Milk 1-131LL 83.6 77.7 1.08 Agreement 1-131 77.7 77.7 1.00 Agreement Ce-141 92 85.2 1.08 Agreement Cr-51 314 327 .0.96 Agreement Cs-134 88.7 90 0.99 Agreement Cs-137 188.6 185 1.02 Agreement Co-58 115 112 1.03 Agreement Mn-54 114.7 114 1.01 Agreement Fe-59 59.7 56.8 1.05 Agreement Zn-65 145.5 143 1.02 Agreement Co-60 154.8 153 1.01 Agreement E4062-162 1st/2004 Milk Sr-89 86.2 103 0.84 Agreement Sr-90 12.7 12.1 1.05 Agreement E4059-162 1st/2004 Water Sr-89 107.7 123 0.88 Agreement

. Sr-90 14.85 14.5 1.02 Agreement E4182-162 2nd/2004 Water H-3 11680 11900 0.98 Agreement E4183-162 2nd/2004 Filter Gross Alpha 46.8 48.8 0.96 Agreement Gross Beta 156 160 0.98 Agreement E4184A-162 2nd/2004 Filter Ce-141 86 88.3 0.97 Agreement Cr-51 127 128 0.99 Agreement Cs-134 54 56.9 0.94 Agreement Cs-137 90 87.8 1.03 Agreement Co-58 27 26 1.03 Agreement Mn-54 42 39.7 1.06 Agreement Fe-59 27 25.1 1.09 Agreement Zn-65 62 56 1.11 Agreement Co-60 92 96.8 0.95 Agreement E4185-162 2nd/2004 Filter Sr-89 Sr-90 ..

MAPEP RdF12 May 2004 Filter Sr-90 20.3 22.4 0.91 Agreement E4186-162 2nd/2004 Milk 1-131 55 58.2 0.95 Agreement 1-131LL 59 58.2 1.01 Agreement Ce-141 165 157 1.06 Agreement Cr-51 241 228 1.06 Agreement

pCi/Liter (Filters in pCi)

B-7

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 TABLE B.2 (cont'd)

FANPEL RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2002 - Quarter 3, 2003

- - Ratio -

Sample -uarterl Sample, Reported ' Known

. E-LABI Number Year' Media, Nucilde ',Value .- Value Analytics Evaluation, E4186-162 2nd/2004 Milk Cs-134 99 101 0.98 Agreement Cs-137 157 156 1.01 Agreement Co-58 46 46.2 1.00 Agreement Mn-54 73 70.5 1.04 Agreement Fe-59 48 44.5 1.08 Agreement Zn-65 100 99.3 1.01 Agreement Co-60 175 172 1.02 Agreement E4269-162 3rd/2004 Water Gross Alpha 41.3 42.7 0.97 Agreement Gross Beta 214 225 0.95 Agreement E4270-162 3rd/2004 Water 1-131 70.5 70.8 1.00 Agreement 1-131LL 67.8 70.8 0.96 Agreement Ce-141 258 250 1.03 Agreement Cr-51 230 223 1.03 Agreement Cs-134 93.4 96.4 0.97 Agreement Cs-137 217 215 1.01 Agreement Co-58 93.4 94.6 0.99 Agreement Mn-54 181 181 1.00 Agreement Fe-59 95.2 91.6 1.04 Agreement Zn-65 180 178 1.01 Agreement Co-60 126 125 1.01 Agreement E4271 -162 3rd/2004 Fiter Gross Alpha 38.3 36.8 1.04 Agreement Gross Beta 191 194 0.98 Agreement E4272-162 3rd/2004 Milk 1-131 81.1 83.5 0.97 Agreement 1-131LL 79.4 83.5 0.95 Agreement Ce-141 240 235 1.02 Agreement Cr-51 214 210 1.02 Agreement Cs-134 89.5 90.6 0.99 Agreement Cs- 137 204 202 1.01 Agreement Co-58 90.9 89 1.02 Agreement Mn-54 173 171 1.01 Agreement Fe-59 91.3 86.1 1.06 Agreement Zn-65 169 167 1.01 Agreement Co-60 116 .118 0.98 Agreement E4273-162 3rd/2004 Milk Sr-89 99.2 102 0.97 Agreement Sr-90 23.4 24.5 0.96 Agreement E4340-162 3rd12004 Filter Sr-89 151 152 1.00 Agreement Sr-90 53.5 58.8 0.91 Agreement

pCi'Liter (Filters in pCi)

Bias and Precision Acceptance Criteria as described above.

B-8

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 TABLE B.3

SUMMARY

OF BLIND DUPLICATE SAMPLES January - December 2004 TYPE OF SAMPLE NUMBER OF PAIRED

._ SAMPLES SUBMITTED Ground Water 2 Surface Water 17 Algae 2 Mussels 2 TOTAL . 23 B-9

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 L APPENDIX C U Summary of 2004 REMP Data L

L L

I:

L L

IL Li C-l

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (PCi/m3) (pCi/m3) (pCi/m3)

AIR PARTICULATE AP 5 L6786-01 111212004 GROSSBETA 3.1OE-02 1.soE-03 3.20E-03 AP 5 L66858-0 1126/2004 GROSS BETA 1.90E-02 1.30E-03 3.20E-03

AP 5 L6927-01 2/9/2004 GROSS BETA 1.58E-02 1.204-03 2.80E-03

AP s L697l-0 2/23/2004 GROSS BETA 2.85E-02 1.404-03 3.00E-03

AP 5 L7037-01 3/812004 GROSS BETA 2.17E-02 1.30E-03 2.60E-03

AP 5 L7101-01 3f22/2004 GROSS BETA 1.57E-02 1.70E-03 3.80E-03

AP s L7181-01 415/2004 GROSS BETA 1.404-02 1.70E-03 4.30E-03

AP 5 L7249-01 411912004 GROSS BETA 1.61E-02 1.60E-03 3.501-03

AP s L7353-01 5/3/2004 GROSS BETA 1.75E-02 1.70E-03 3.80E-03

AP s L7424-01 5/17/2004 GROSS BETA 1.76E-02 1.704-03 3.90E-03

AP 5 L7500-01 6/1/2004 GROSS BETA 1.56E-02 1.60E-03 3.80E.03

AP s L7555-01 6/14/2004 GROSS BETA 1.61E-02 2.004-03 5.30E-03

AP s L7634-01 6/28/2004 GROSS BETA 2.19E-02 1.801-03 3.70E-03

AP 5 L7713-01 7/12/2004 GROSS BETA 1.71E-02 1.901-03 4.8012-03 AP 5 L7805-01 7126/2004 GROSS BETA 1.35E-02 1.soE-03 5.OOE-03 AP 5 L7885-01 8/9/2004 GROSS BETA 1.10E-02 1.70E-03 4.40E-03

AP 5 L7943-01 8/23/2004 GROSS BETA 1.82E-02 1.80E-03 4.30E-03

AP s L8034-01 9n72004 GROSS BETA 2.02E-02 1.80E-03 4.30E-03

AP 5 L8089-01 9/20/2004 GROSS BETA 1.18E-02 1.70E-03 4.20E-03

AP 5 LS196-01 10/4/2004 GROSS BETA 2.40E-02 1.90E-03 3.80E-03

AP s L8270-01 10/18/2004 GROSS BETA 2.39E-02 2.004-03 4.40E-03

AP 5 L381-01 1/1l/2004 GROSS BETA IA3E-02 1.80E-03 4.80E-03

AP 5 1448-01 11/15/2004 GROSS BETA 1.734-02 1.80E-03 4.302-03

AP 5 1506-01 11/29/2004 GROSS BETA 2.542-02 2.004-03 4.5023-03 AP 5 L2566-01 1213132004 GROSS BETA 1.98E-02 1.901-03 4.50E-03 AP 5 L8642-01 12/28/2004 GROSS BETA 1.89E-02 1.70E-03 3.70E4-03 AP 5 L728I-01 4/5/2004 Be-7 7A0E-02 1.90E-02 . 5.30E-o2 AP s L728 I-0 4/512004 Co-58 -9.001-04 1.004-03 4.60E-03 AP s L7281I0I 4/5/2004 Co-60 -3.40E-04 6.801-04 3.00E-03 AP . s L728 I-0 4/5/2004 Cs-134 2.70E-04 5.20E-04 2.OOE-03 AP s L7281-01 4/5/2004 Cs-137 -2.30E-04 4.30E-04 1.90E-03 AP 5 L7696-01 6/28/2004 Be-7 1.18E-01 2.204-02 5.302-02 AP s L7696-01 6/28/2004 Co-58 8.OOE.05 5.70E-04 2.60E-03 AP 5 L7696-01 6/28/2004 Co-60 1.90E-04 6.00E-44 2.501-03 AP 5 L7696-01 6128/2004 Cs-134 -1.05E-03 6.40E-4 3.1OE-03 AP S L7696-0l 6/28/2004 Cs-137 -5.70E-04 6.80E-04 2.90E-03 AP 5 L8254-01 9/20/2004 Be-7 9.30E-02 2.60E-02 7.20E-02 AP 5 L8254-01 9/20/2004 Co-58 1.00E-04 1.70E403 6.70E-03 AP 5 L8254-01 9/20/2004 Co-60 9.502-04 8.90E-04 3.204-03 AP 5 L8254-01 9/20/2004 Cs-134 1.004-04 8.902-04 3.60E-03 AP 5 L8254-01 9/20/2004 Cs-137 -2.004-04 1.40E-03 5.1OE-03 AP 5 L8735-01 12128/2004 Be-7 1.08E-01 130E-02 2.10E2-02 AP 5 L8735-01 12128/2004 Co-58 -5.20E-04 7.00E-04 3.00E-03 AP 5 L8735-01 12128/2004 Co-60 3.90E-04 3.90E-04 IAOE-03 AP 5 L8735-01 12128/2004 Cs-134 -5.60E-4 3.OOE-04 1.60E-03 AP 5 L8735-01 12128/2004 Cs-137 2.204-04 2.30E-04 8.40E-04

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ lMinimum Detectable Concentration > Lower Limit of Detection Requirement C-2

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATTON LSN DATE NUCLIDE inri/m3) fnryi/i3

-- . v ._.-

(nryi/m)

.- .... I x AIR PARTICULATE AP 6 L6786-02 1/122004 GROSS BETA 2.83E-02 1.50E-03 3.30E403 AP 6 L6858-02 1/26/2004 GROSS BETA 1.86E-02 1.30E-03 3.30E403 AP 6 L6927-02 2/9/2004 GROSS BETA .89E3-02 1.30E-03 2.90E-03 AP 6 L6971-02 2/3f2004 GROSS BETA 3.1OE-02 I.50E-03 3.1OE403 AP 6 L7037-02 3/8/2004 GROSS BETA 2.1 1E-02 1.30E-03 2.60E-03 AP 6 L7101-02 3/2212004 GROSS BETA 1.63E-02 1.70E-03 3.901E03 AP 6 L7181-02 4/5/2004 GROSS BETA 1.60E-02 1.80E-03 4.40E403 AP 6 L7249-02 4119/2004 GROSS BETA 2.14E-02 1.80E-03 3.60E403 AP 6 L7353-02 5/3fl004 GROSS BETA 1.61E-02 1.70E-03 3.80E.03 AP 6 L7424-02 5/17fl004 GROSS BETA .97E-02 .80E3-03 3.90E.03 AP 6 , L7soo-02 6/1/2004 GROSS BETA 1.72E-02 1.70E-03 3.80E.03 AP 6 L7555-02 6/14/2004 GROSS BETA 1.34E-02 .90E3-03 5.20E-03 AP 6 L7634-02 6/28/2004 GROSS BETA 2.01E-02 1.soE-03 3.60E-03 AP 6 L7713-02 7/1212004 GROSS BETA 1.74E-02 IS.90E-03 4.803E03 AP 6 L7805-02 7/26/2004 GROSS BETA 1.52E-02 1.90E-03 4.90E403 AP 6 L7885-02 8/9/2004 GROSS BETA 1.16E-02 1.70E-03 4.30E403 AP 6 L7943-02 8/23/2004 GROSS BETA 1.74E-02 1.80E-03 4.30E403 AP 6 L8034"2 9n72004 GROSS BETA 2.OOE-02 1.80E-03 4.30E403 AP 6 L8089-02 9/20/2004 GROSS BETA IA IE-02 1.70E-03 4.20E403 AP 6 LB 96-02 10/4/2004 GROSS BETA 2.4 1E-02 1.90E-03 3.80E403 AP 6 L8270-02 10o18/2004 GROSS BETA 2.3 1E-02 1.90E-03 4.40E-03 AP 6 L8381-02 1lflno004 GROSS BETA 1.03E-02 1.70E-03 4.70E-03 AP 6 L8448-02 11/15/2004 GROSS BETA 2.13E-02 I.90E-03 4.50E403 AP 6 L8506-02 11/29/2004 GROSS BETA 2.4 IE-02 2.00E-03 4.60E403 AP 6 L8566-02 12113/2004 GROSS BETA 2.14E-02 2.00E-03 4.60E-03 AP 6 L8642-02 12/28/2004 GROSS BETA .85E3-02 1.70E403 3.80E-03 AP 6 L7281402 415/2004 Be-7 6.20E-02 1.80E-02 4.90E-02

AP 6 L7281402 4/5/2004 Co-58 -I .03E403 6.70E-04 3.70E-03 AP 6 L7281-02 4/5/2004 Co-60 -3.00E-05 3.20E-04 I.70E-03 AP 6 L7281-02 4/5/2004 Cs-134 4.00E-04 4.60E-04 1.70E403 AP 6 L7281402 4/5/2004 Cs-137 I .80E-04 5.00E.04 1.90E-03 AP 6 L7696-02 6/28/2004 Be-7 1.86E-41 2.30E402 4.40E-02 AP 6 L7696-02 6/28/2004 Co-58 4.50E-04 8.60E-04 3.40E-03 AP 6 L7696-02 6/28/2004 Co-60 7AOE.04 5.90E-04 2.00E403 AP 6 L7696-02 6/28/2004 Cs-134 -1.70E-04 5.10E104 2.30E403 AP 6 L7696-02 6/28/2004 Cs-137 -2.50E-04 7.20E104 2.90E-03 AP 6 L8254-02 9/20/2004 Be-7 5.30E-02 2.20E-02 6.90E-02 AP 6 L8254-02 9/20/2004 Co-58 3.00E-04 1.20E403 5.00E403 AP 6 L8254-02 9/20/2004 Co-60 3.30E-04 9.80E-04 3.90E-03 AP 6 L8254-02 9120/2004 Cs-134 1.60E-04 7.00E.04 2.90E403 AP 6 L8254-02 9120/2004 Cs-137 -5.00E-04 I .50E403 5.50E-03 AP 6 L8735-02 12128/2004 Be-7 6.20E-02 I .20E402 2.70E-02 AP 6 L8735402 12128/2004 Co-58 -7.00E-05 4.50E-04 2.1 OE403 AP 6 L8735-02 12128/2004 Co-60 I .00E-04 4.50E-04 1.90E-03 AP 6 L8735-02 12/28/2004 Cs.134 5.90E-04 2.60E.04 3.20E.04 AP 6 L8735-02 12n28/2004 Cs-137 3.60E-04 3.1 OE-04 I.IOE-03 Radioactivity detected In samplc (i.e., concentration > 3 X standard deviation)

Minimum Detectable Concentration > Lower Limit or Detection Requirement C-3

Haddam Ncck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (nCi/m3)

AIR PARTICULATE AP 7 L6786-03 1/12/2004 GROSS BETA 3.06E-02 1.50E-03 3.20E-03

AP 7 L6858-03 1/26/2004 GROSS BETA 2.04E-02 1.30E-03 3.10E-03 AP 7 L6971-03 2/23/2004 GROSS BETA 3.30E-02 1.50E03 2.90E-03

AP 7 L7037-03 3/8/2004 GROSS BETA 2.37E-02 1.30E-03 2.50E-03

AP 7 L7101-03 3/22/2004 GROSS BETA 1.45E-02 1.60E-03 3.70E-03

AP 7 L7181-03 4/5/2004 GROSS BETA 1.38E-02 1.60E-03 4.20E-03

AP 7 L7249-03 4119/2004 GROSS BETA 1.70E402 1.60E03 3.40E-03

AP 7 L7353-03 5/3/2004 GROSS BETA 1.92E-02 1.70E-03 3.70E-03

AP 7 L7424-03 5/17/2004 GROSS BETA 2.05E-02 1.80E-03 3.80E-03

AP 7 L7500-03 61112004 GROSS BETA 1.50E-02 1.60E403 3.60E-03 AP 7 L755503 6/14/2004 GROSS BETA 1.82E-02 2.OOE-03 5.00E-03

AP 7 L7634-03 6/28/2004 GROSS BETA 1.78E-02 1.70E-03 3.50E4-03 AP 7 L7713-03 7/12/2004 GROSS BETA 1.75E-02 1.90E-03 4.60E-03 AP 7 L7805-03 7126/2004 GROSS BETA 1.76E-02 1.90E-03 4.70E-03

AP 7 L7885-03 8/9/2004 GROSS BETA 1.23E-02 1.60E-03 4.20E-03

AP 7 L7943-03 8123/2004 GROSS BETA 1.78E-02 1.80E-03 4.10E-03

AP 7 L803443 9n72004 GROSS BETA 1.80E-02 1.70E-03 4.10E-03

AP 7 L8089-03 9/20/2004 GROSS BETA 1.1I E-02 1.60E-03 4.00E-03

AP 7 LS 196-03 10/4/2004 GROSS BETA 2.47E-02 1.90E-03 3.60E-03

AP 7 L8270-03 10/18/2004 GROSS BETA 2.07E-02 1.80E-03 4.1OE-03

AP 7 L8381-03 11/1/2004 GROSS BETA 1.14E402 1.60E403 4.50E-03

AP 7 L8448-03 11/15/2004 GROSSBETA 1.81E-02 1.70E-03 4.1OE-03

AP 7 L8506-03 11/29/2004 GROSS BETA 3.65E-02 3.00E-03 6.60E-03

AP 7 L8566-03 12/13/2004 GROSS BETA 1.91E-02 1.80E-03 4.30E-03

AP 7 L8642-03 12/28/2004 GROSS BETA 2.26E-02 1.80E-03 3.60E-03 AP 7 L7281-03 4/5/2004 Be-7 7.40E-02 1.70E-02 3.90E-02

AP 7 L7281-03 4/5/2004 Co-58 3.00E-04 I.IOE-03 4.40E-03 AP 7 L7281403 *4/5/2004 Co-60 -3.30E-04 5.80E-04 2.80E-03 AP 7 L7281-03 4/5/2004 Cs-134 1.20E-04 5.60E404 2.30E-03 AP 7 L7281-03 4/5/2004 Cs-137 -1.30E-04 5.60E-04 2.30E-03 AP 7 L7696-03 6/28/2004 Be-7 1.26E-01 2.1OE-02 4.90E-02 AP 7 L7696-03 6/28/2004 Co-58 -1.50E-04 7.20E-04 3.30E-03 AP 7 L7696-03 6/28/2004 Co-60 -1.42E-03 7.20E-04 3.70E-03 AP 7 L7696-03 6/28/2004 Cs-134 -1.70E-04 4.90E-04 2.20E-03 AP 7 L7696-03 6/28/2004 Cs-137 2.00E-05 5.20E-04 2.1OE403 AP 7 L8254-03 9/20/2004 Be-7 7.60E-02 2.40E-02 7.00E-02 AP 7 L825403 9/20/2004 Co-58 -7.00E4 I1.40E-03 5.90E-03 AP 7 U2254-03 9/20/2004 Co-60 1.00E-05 8.90E-4 3.80E-03 AP 7 L8254-03 9/20/2004 Cs-134 1.60E-03 9.00E-04 2.80E-03 AP 7 L8254-03 9/20/2004 Cs-137 -2.50E-03 1.30E-03 5.30E-03 AP 7 18735403 12/28/2004 Be-7 7.90E-02 1.30E-02 2.70E4-02 AP 7 L8735-03 12/28/2004 Co-58 -2.60E-04 6.20E-04 2.80E-03 AP 7 12735-03 12/28/2004 Co-60 -2.00E-04 3.1OE-04 1.60E-03 AP 7 L8735-03 12/28/2004 Cs-134 -1.80E-04 2.70E-04 1.30E-03 AP 7 12735-03 12/28/2004 Cs-137 2.OOE-05 3.30E-04 1.30E-03

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement C-4

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCitm3) (pCi/m3) (POCim3)

AIR PARTICULATE AP 9 L6786-04 1/12/2004 GROSS BETA 3.03E-02 2.00E-03 4.80E403

AP 9 L6858-04 1U26/2004 GROSS BETA 1.97E-02 1.60E-03 4.00E4-03 AP 9 L6927-04 2/9/2004 GROSS BETA l.W1E4-02 1.50E-03 3.50E-03

AP 9 L6971-04 2123/2004 GROSS BETA 3.13E-02 1.70E403 3.70E-03

AP 9 L7037-04 3/8/2004 GROSS BETA 2.37E-02 1.50E-03 3.20E-03

AP 9 L7101-4 3122/2004 GROSS BETA 1.44E402 1.90E403 4.70E-03

AP 9 L7181-04 4/5/2004 GROSS BETA 1.58E-02 2.OOE403 5.30E-03

AP 9 L7249-4 4119/2004 GROSS BETA 1.24E-02 1.70E-03 4.20E-03

AP 9 L735344 5/3/2004 GROSS BETA 1.61E-02 1.90E403 4.60E-03

AP 9 L7424-04 5/17/2004 GROSS BETA 2.26E-02 2.10E-03 4.70E-03

AP 9 L7500-04 6/11/2004 GROSS BETA 1.58E-02 1.80E-03 4.50E-03

AP 9 L7555-4 611412004 GROSS BETA 1.43E402 2.30E403 6.20E-03

AP 9 L7634-04 6128/2004 GROSS BETA 2.14E-02 2.OOE-03 4.30E-03

AP 9 L7713-04 7/12/2004 GROSS BETA 1.58E-02 2.1OE-03 5.60E-03

AP 9 L7805-04 7126/2004 GROSS BETA 1.62E402 2.20E403 5.80E-03

AP 9 L7885404 8/9/2004 GROSS BETA 9.40E-03 1.80E403 5.1OE-03

AP 9 L7943404 8i2312004 GROSS BETA 1.75E-02 2.00E403 5.OOE-03

AP 9 L8034-04 9m12004 GROSSBETA 1.96E-02 2.00E-03 5.00E4-03 AP 9 L8089-04 9/20/2004 GROSS BETA 1.36E-02 1.90E-03 4.90E-03

AP 9 L8196-04 10/412004 GROSS BETA 2.44E-02 2.1OE403 4AOE403 AP 9 L8270-04 1011812004 GROSS BETA 2.33E-02 2.20E403 5.1OE-03

AP 9 L8381-04 11/1/2004 GROSS BETA 1.61E-02 2.10E-03 5.60E-03

AP 9 L8448-04 11/15/2004 GROSS BETA 1.89E-02 2.1OE-03 5.1OE-03

AP 9 L8506-04 11/2912004 GROSS BETA 2.69E-02 2.30E-03 5.20E-03

AP 9 L8566-04 12/1312004 GROSS BETA 1.65E-02 2.OOE-03 5.30E-03

AP 9 L8642-04 12/2812004 GROSS BETA 2.34E-02 2.OOE-03 4.30E-03

AP 9 L7281-04 4/512004 Be-7 8.10E-02 1.80E402 4.001-02

AP 9 L7281-04 4/512004 Co-58 6.00E-04 1.20E-03 4.60E-03 AP 9 L7281-04 4/512004 Co-60 4.70E-04 6.80E-4 2.60E-03 AP 9 L7281404 4/512004 Cs-134 5.80E04 7.50E404 2.70E403 AP 9 L7281-04 4/512004 Cs-137 8.30E-04 7.90E-04 2.80E-03 AP 9 L7696-04 6/2812004 Be-7 9.1OE-02 2.30E-02 6.10E-02 AP 9 L7696-04 612812004 Co-58 2.60E-03 1.30E403 3.40E-03 AP 9 L7696-04 612812004 Co-60 -6.OOE-04 1.00E-03 4.70E-03 AP 9 L7696-04 6128/2004 Cs-134 1.00E-04 1.10E-03 4.40E-03 AP 9 L7696-04 6/28/2004 Cs-137 0.00E+00 1.80E-03 6.50E-03 AP 9 L8254-04 9/20J2004 Be-7 3.50E-02 2.50E-02 8AOE402 AP 9 L8254-04 9/20/2004 Co-58 1.50E-03 2.50E-03 9.20E-03 AP 9 L8254-04 9/20/2004 Co-60 1.50E-03 1.30E-03 4.60E-03 AP 9 L8254-04 9/20/2004 Cs-134 5.20E-04 7.60E-04 2.90E-03 AP 9 L8254-04 9/20/2004 Cs-137 -3.OOE-04 1.70E-03 6.30E-03 AP 9 L8735-04 1212812004 Be-7 6.40E-02 1.20E402 2.20E-02 AP 9 L8735-04 12128/2004 Co-58 *4.20E-04 7.OOE-04 3.30E-03 AP 9 L8735-04 1212812004 Co-60 2.20E-04 2.20E-04 5.90E.04 AP 9 L8735-04 1212812004 Cs-134 4.OOE-04 5.00E-04 1.90E403 AP 9 L8735-04 12128/2004 Cs-137 2.40E404 3.50E-44 1.30E-03

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ lMinimum Detectable Concentration > Lower LImit of Detection Requirement C-5

Haddam Neck Station Annual Radiological Environmental Operating Report 200.4 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (WCi/m3) (pCifm3)

AIR PARTICULATE AP 13 L6786-0s 1112/2004 GROSS BETA 3.29E-02 2.20E-03 5.20E-03

AP 13 L6858-05 1/2612004 GROSS BETA 1.69E-02 1.40E-03 3.40E-03

AP 13 L6927-05 2/9/2004 GROSS BETA 1.78E-02 1.30E-03 3.00E-03

AP 13 L6971-05 2/23/2004 GROSS BETA 3.30E-02 1.60E-03 3.20E-03

AP 13 L7037-0s 3//2004 GROSS BETA 2.40E-02 1.40E-03 2.70E-03

AP 13 L7101-05 3f22/2004 GROSS BETA 1.58E-02 1.70E-03 4.00E-03 AP 13 L7181-OS 415/2004 GROSS BETA 1.23E-02 1.70E-03 4.60E-03

AP 13 L7249-05 4/19/2004 GROSS BETA L.57E-02 1.70E-03 3.70E-03

AP 13 L7353-05 5s3/2004 GROSS BETA 1.61E-02 1.70E-03 4.OOE-03

AP 13 L7424-05 5/17/2004 GROSS BETA 2.48E-02 2.OOE-03 4.1OE-03

AP 13 L7500-05 6/2/2004 GROSS BETA 1.54E-02 1.60E-03 3.90E-03

AP 13 L7s55-05 6114/2004 GROSS BETA 1.46E-02 2.00E-03 5.40E-03

AP 23 L7634-05 6n28/2004 GROSS BETA 2.3 1E-02 1.901E-03 3.80E-03

AP 13 L7713405 7/12/2004 GROSS BETA 1.94E-02 2.00E-03 4.90E.03

AP 13 L780s-0S5 7/26/2004 GROSS BETA 1.66E-02 2.OOE-03 5.IOE-03

AP 13 L7885-OS 8/9/2004 GROSS BETA 1.24E-02 1.70E-03 4.50E-03

AP 13 L7943-OS 823/2004 GROSS BETA 1.95E-02 1.90E-03 4.40E-03

AP 13 L8034-05 9n72004 GROSS BETA 1.74E-02 1.soE-03 4.40E-03

AP 13 L8089-05 9/2012004 GROSS BETA 1.15E-02 1.70E-03 4.30E-03

AP 23 L8196-0s 10/4/2004 GROSS BETA 2.28E-02 1.90E-03 3.90E-03

AP 23 L8270-0s 10118/2004 GROSS BETA 2.24E-02 2.00E-03 4.50E-03

AP 13 L8381-05 11/1/2004 GROSS BETA 1.41E-02 1.80E-03 4.80E-03

AP 13 L8448-05 11115/2004 GROSS BETA L.55E-02 1.80E-03 4.40E-03

AP 13 L8506-05 11/29/2004 GROSS BETA 2.35E-02 2.OOE-03 4.503E03

AP 13 L8566-05 12/13/2004 GROSS BETA 2.OOE-02 1.90E-03 4.50E-03

AP 13 Ls642405 12/28/2004 GROSS BETA 1.74E-02 1.70E-03 3.80E-03 AP 13 L7281-05 4/5/2004 Be-7 3.70E-02 1.30E402 3.80E-02 AP 13 L7281-05 4/5/2004 Co-58 -1.4IE-03 7.90E-04 4.30E-03 AP 13 L7281-05 4/5/2004 Co-60 7.00E-04 4.1OE-04 6.30E-04 AP 13 L7281.05 4/5/2004 Cs-134 -.IIE-03 4.90E-04 2.70E-03 AP 23 L7281-05 4/5/2004 Cs-137 -4.70E-04 6.OOE-04 2.60E-03 AP 13 L7696-05 6/28/2004 Be-7 1.06E-01 2.20E-02 5.60E-02 AP 23 L7696-05 6/28/2004 Co-58 -1.35E-03 9.soE-04 5.OOE-03 AP 23 L7696-05 6/28/2004 Co-60 -2.20E-04 6.901E04 3.30E-03 AP 13 L7696-05 6/28/2004 Cs-134 6.30E404 8.80E-04 3.30E-03 AP 13 L7696-05 6128/2004 Cs-137 -1.30E-03 1.40E-03 5.40E-03 AP 13 L82545 9/20/2004 Be-7 9.50E-02 2.30E-02 5.80E-02 AP 23 L8254-05 9/20/2004 Co-58 -8.OOE-04 1.70E-03 7.30E-03 AP 23 L82545 9/20/2004 Co-60 1.00E-03 1.10E-03 4.00E403 AP 13 L8254-05 9/20/2004 Cs-134 -1.30E-04 7.80E-04 3.40E-03 AP 3 Ls254-05 9/2012004 Cs-137 1.00E-03 1.60E-03 5.70E-03 AP 13 L8735-05 12/28/2004 Be-7 I.OOE-0I 1.30E-02 2.40E-02 AP 13 L8735s0s 12/28/2004 Co-58 2.OOE-05 7A0E-04 3.OOE-03 AP 13 L8735-05 12/28/2004 Co-60 1.IOE-04 3.40E-04 1.40E-03 AP 13 L8735-05 12/28/2004 Cs-134 7.70E-04 3.70E-04 1.10E-03 AP 13 L8735-05 12228/2004 Cs-137 -3.10E-04 3.90E-04 1.60E-03

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement C-6

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPF STATION TSN DATE NUCLIDE (nCi/ke) (nCdke) (nCifke)

FISH FHl 26 L7551-03 6/9/2004 Ag-l1lm -I. IOE+0I 1.40E+01 6.50E+0I FH 26 L7551-03 6/9/2004 Ba-140 O.OOE+00 4.80E+01 2.20E+02 FH 26 L7551.03 619/2004 Be-7 -1.IOE+02 1.20E+02 5.00E+02 Fl1 26 L7551-03 619/2004 Ce-141 -1.30E+0I 1.80E+01 6.90E+OI FRl 26 L7551-03 619/2004 Ce-144 -1.20E+0 I 4.30E+01 1.60E+02 Fll 26 L7551.03 6/9/2004 Co-57 2.50E+0O 4.90E+00 1.80E+OI FH 26 L7551-03 619/2004 Co-58 3.10E+0I 1.50E+01 4.10E+OI FRl 26 L7551-03 6/9/2004 Co-60 I .30E+0I 1.40E+0I S.20E+0I FH 26 L7551-03 6/9/2004 Cs-134 6.00E+0O 1.30E+01 5.00E+OI FH 26 L7551-03 619/2004 Cs-137 6.00E+0O 1.30E+01 4.80E+OI FH 26 L7551-03 619/2004 Fe-59 4.90E+O I 3.90E+01 1.30E+02 FH 26 L7551-03 6/9/2004 1-131 -2.50E+0I 8.30E+01 3.40E+02 Fl 26 L7551-03 6/912004 K-40 2.41 E+03 3.70E+02 5.60E+02

Fl1 26 L7551-03 6/9/2004 Mn-54 -3.OOE+00 1.30E+01 5.30E+OI FH 26 L7551-03 6/9/2004 Ru-103 -3.70E+0 I 1.60E+01 7.60E+0I FH 26 L7551-03 619/2004 Ru-106 8.00E+0I 1.IOE+02 4.20E+02 FH 26 L7551-03 6/9/2004 Sb- 124 -6.80E+0I 3.40E+01 2.00E+02 RIl 26 L7551-03 6/9/2004 Zn-65 -9.OOE+00 2.60E+01 1.20E+02 FlI 26 L7551-03 619/2004 Zr-95 3.20E+0I 2.50E+01 8.40E+0I FH 26 L7551-04 6/9/2004 Ag- lOrm O.OOE+0O 1.40E+01 5.90E+OI FH 26 L7551-04 6/9/2004 Ba-140 -2.20E+0I 7.40E+01 3.IOE+02 FH 26 L7551-04 6/9/2004 Be-7 5.00E+0 I 1.30E+02 4.90E+02 FH 26 L7551-04 6/9/2004 Ce-141 -3.70E+0I 2.20E+01 8.90E+0I FH 26 L7551-04 6/9/2004 Ce-144 -1.30E+0I 5.50E+01 2.10E+02 FH 26 L7551-04 6/9/2004 Co-57 -9.OOE-OI 7.40E+00 2.70E+0I FH 26 L7551-04 6/9/2004 Co-58 3.OOE+00 1.30E+01 5.30E+0I FH 26 L7551-04 6/9/2004 Co-60 -4.00E+00 1.80E+01 7.20E+01 FH 26 L7551-04 6/912004 Cs-134 -1.40E+0I 1.30E+01 5.90E+0I Fli 26 L7551-04 6/9/2004 Cs-137 2.40E+0I 1.60E+01 5. IOE+0I FH 26 L7551-04 6/9/2004 Fe-59 1.39E+02 6.40E+0I I.90E+02 FH 26 L7551-04 6/9/2004 1-131 -1.80E+02 9.60E+01 4.40E+02 FH 26 L7551-04 6/9/2004 K-40 2.99E+03 3.90E+02 4.70E+02 FH 26 L7551-04 6/9/2004 Mn-54 -I.OOE+OI I. I OE+O I 5.00E+0I FH 26 L7551-04 6/9/2004 Ru-103 -2.70E+0I I.AOE+OI 6.70E+0I FH 26 L7551-04 6/9/2004 Ru-106 1.90E+02 1.30E+02 4.20E+02 FH 26 L7551-04 6/9/2004 Sb-124 0.OOE+00 2.20E+01 1.20E+02 FH 26 L7551-04 6/9/2004 Zn-65 -9.OOE+00 3.70E+01 1.50E+02 FH 26 L7551-04 6/912004 Zr-95 -3.60E+0I 2.OOE+OI I.OOE+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement C-7

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCilkg) (pCi/ke) (pCi/kg)

FISH FH 26 L8151-01 9/27/2004 Ag-l lOm O.OOE+0O 1.80E+01 6.90E+OI FH 26 L8151-01 9/27/2004 Ba-140 0.OOE+00 6.60E+01 2.90E+02 FH 26 L8151-01 9/27/2004 Be-7 5.OOE+OI I.OOE+02 3.90E+02 FH 26 L8151-01 9/27/2004 Ce-141 I.IOE+0I 2.60E+01 9.10E+0I FH 26 L8151401 9/27/2004 Ce-144 -8.00E+00 5.00E+0I I.90E+02 FH 26 L8151-01 9/27/2004 Co-57 O.OOE+00 7.OOE+00 2.50E+0I FH 26 L8151-01 9/27/2004 Co-58 0.OOE+OO 1.30E+01 5.30E+0I FH 26 L81514-1 9/27/2004 Co-60 1.79E+01 9.90E+00 2.90E+OI FH 26 L81514-1 9/2712004 Cs-134 2.70E+0I I.IOE+0I 2.90E+0I FH 26 L8151401 9/2712004 Cs-137 3.0OE+00 1.30E+01 4.90E+0I FI 26 L8151-01 9/27/2004 Fe-59 2.30E+01 4.30E+01 1.70E+02 FH 26 LU151-01 912712004 1-131 -2.10E+02 I.90E+02 7.70E+02 FH 26 L81514-1 912712004 K-40 2.61 E+03 3.50E+02 6.10E+02 FH 26 L81514-1 9127f2004 Nin-54 2.16E+01 8.50E+00 2.00E+0I FH 26 L81514-1 9n2712004 Ru-103 -3.OOE+00 2.00E+01 7.60E+01 FH 26 L81514-1 9127/2004 Ru-106 I.OOE+0I I.OOE+02 3.90E+02 FH 26 L8 151 -01 912712004 Sb-1 24 -2.70E+01 2.70E+01 1.501E+02 FR 26 L8151 -1 912712004 Zn-65 -3.40E+01 3.00E+01 1.30E+02 FH 26 L8151-01 912712004 Zr-95 -4.OOE+01 2.20E+0I I.IOE+02 FH 26 L8151-02 912912004 Ag-I lOm -5.00E+00 1.20E+01 5.30E+OI RH 26 L8151-02 912912004 Ba-140 2.60E+01 5.90E+01 2.40E+02 FH 26 L8151-02 9129/2004 Be-7 -1.38E+02 9.80E+01 4.30E+02 FIl 26 L8151-02 9/2912004 Ce-141 2.10E+01 2.40E+01 8.30E+0I FH 26 L 151-02 9/2912004 Ce-144 -6.OOE+00 4.20E+01 1.60E+02 Fi 26 L8151-02 9/29/2004 Co-57 -6.20E+00 5.70E+00 2.20E+0I FH 26 L8151-02 9/29/2004 Co-58 5.80E+00 9.00E+00 3.50E+0I Ri1 26 L8151-02 9129/2004 Co-60 1.90E+0I I. IOE+0I 3.1OE+0 I FH 26 L8151-02 9/29/2004 Cs-134 9.00E+00 1.20E+01 4.20E+0I Fi 26 L8151-02 9/29/2004 Cs-137 4.90E+00 6.90E+00 2.60E+0I Fi 26 L8151-02 9/29/2004 Fe-59 5.70E+01 3.70E+01 1.20E+02 FH 26 L8151-02 9/29/2004 1-131 1.40E+02 1.60E+02 5.60E+02 FH 26 L8151-02 9129/2004 K-40 2.90E+02 1.40E+02 4.20E+02 FH 26 L8151-02 9129/2004 Mn-54 -2.30E+00 9.40E+00 3.90E+OI FH 26 L8151-02 9/29/2004 Ru-103 -3.00E+00 1.40E+01 5.70E+0O FH 26 L8151-02 9/29/2004 Ru-106 -1.70E+02 8.50E+01 4.00E+02 FH 26 L8151-02 9/29/2004 Sb-124 1.40E+01 3.80E+01 1.60E+02 Fi 26 L8151-02 9/29/2004 Zn-65 -4.30E+01 2.70E+01 1.20E+02 FH 26 L8151-02 9/2912004 Zr-95 -1.40E+01 2.60E+0I I.IOE+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Alinimum Detectable Concentration > Lower Limit or Detection Requiremcnt C-8

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION TSN DATF NM Tr 1M{J\_t,1t}G TnF1 {,triRal t1wL11K1:} (nrifktv) (nri^.kr)

FISH FH 29 L7551-01 6/912004 Ag-I lOm -1.80E+0I 3.70E+0I I.50E+02 FH 29 L7551 -01 6/9/2004 Ba-140 -3.60E+10 2.30E+10 I.IOE+I I FH 29 L7551-01 6/9/2004 Be-7 -8.00E+03 1.20E+04 4.70E+04 FH 29 L7551 -01 6/912004 Ce-141 -1.30E+04 4.20E+04 1.60E+05 FH 29 L7551-01 6/9/2004 Ce-144 1.30E+02 1.30E+02 440AE+02 FIll 29 L7551-01 6/912004 Co-57 3.OOE+0O 1.60E+0I 5.60E+01 FH 29 L7551-01 619/2004 Co-58 9.00E+0I 5.OOE+02 1.90E+03 FH 29 L7551-01 6/912004 Co-60 4.OOE+0O 1.20E+0I 4.50E+OI FEU FH 29 L7551-01 61912004 Cs-134 -1.20E+0I l.50E+0I 6.20E+OI FH 29 L7551 -01 6/912004 Cs-137 1.70E+0O I.30E+0I 4.40E+OI FH 29 L7551-01 6/912004 Fe-59 l .OOE+03 1.I1OE+04 4.50E+04 FH 29 L7551 -01 6/912004 1-131 5.90E+ 15 4.60E+15 1.50E+16 2.29E+03 3.20E+02 6.40E+02

29 L7551 -01 6/912004 K-40 I'll 29 L7551 -01 6/912004 Mn-54 -3.1 OE+OI 2.30E+0I 9.90E+01 FH 29 L7551-01 6/912004 Ru-103O 9.70E+03 8.60E+03 2.90E+04 29 L7551 -01 6/912004 Ru-106 3.60E+02 1.80E+02 5.60E+02 Fit 29 L7551 -01 6/912004 Sb-124 7.OOE+02 1.90E+03 7.70E+03 FH 29 L7551-01 6/912004 Zn-65 1.60E+01 5.80E+0I 2.30E+02 FH 29 L7551 -01 6/912004 Zr-95 -4.40E+02 9.70E+02 4.00E+03 Fit 29 L7551-02 6/1012004 Ag-I lOm *4.00E+00 I.50E+01 6.10E+0I FHI 29 L7551-02 6/1012004 Ba-140 -9.91OE+0I 5.50E+0I 2.70E+02 29 L7551-02 6/1012004 Be-7 9.00E-+0I 1.20E+02 4.20E+02 FH 29 L7551-02 6/1012004 Ce-141 -3.30E+01 I.90E+0O 7.50E+0O FH 29 L7551-02 6/1012004 Ce-144 3.90E+01 5.40E+0I 1.90E+02 FH 29 L7551-02 6/1012004 Co-57 0.OOE+00 6.40E+00 2.30E+0I FIll 29 L7551-02 6/10/2004 Co-58 -6.00E+0O 1.20E+01 5.IOE+0I FH 29 L7551-02 6/1012004 Co-60 O.OOE+00 1.SOE+0I 5.70E+0I FHi 29 L7551-02 611012004 Cs-134 -8.00E+00 1.OOE+0I 4.50E+0I FII 29 L7551-02 6110/2004 Cs-137 3.80E+01 1.50E+0I 4.60E+OI FHt 29 L7551-02 6/10/2004 Fe-59 5.10E+0I 3.90E+0I 1.30E+02 29 L7551-02 6/1102004 1-131 -4.80E+01 9.50E+0I 3.70E+02 FH

29 L7551-02 610/2004 K-40 1.93E+03 3.30E+02 7.1 OE+02 FH 29 eL7551-02 611/02004 Mn-54 -1.50E+01 1.20E+0I 5. IOE+OI FH 29 L7551-02 611012004 Ru-103 -9.OOE+0O I.AOE+OI 5.60E+OI FH 29 L7551-02 6110/2004 Ru-106 -4.00E+0O 1.1 OE+02 4.20E+02 FE 29 L7551-02 6/1012004 Sb-124 O.OOE+0O 4.30E+OI 1.80E+02 FH 29 L7551-02 6/1012004 Zn-65 -7.90E+0I 3.1OE+OI 1.50E+02 FH 29 L7551-02 6110/2004 Zr-95 -1.OOE+00 1.80E+OI 7.60E+OI

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement C-9

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/ktg) (pCi/kg) (pCi/Ik)

FISH FH 29 L8151-04 9/28/2004 Ag-Illm -2.70E+01 1.30E+01 5.70E+0I FH 29 L8151-04 9/28/2004 Ba-140 3.IOE+0I 4.30E+01 1.60E+02 FH 29 L8151-04 9/28/2004 Be-7 -6.OOE+OI I.OOE+02 3.90E+02 FH 29 L8151-04 9/28/2004 Ce-141 3.50E+01 2.30E+01 7.40E+0O FH 29 L8151-04 9/28/2004 Ce-144 4.80E+01 4.60E+01 1.70E+02 FH 29 L8151-04 9/28/2004 Co-57 -5.1 OE+OO 6.1OE+00 2.30E+0O FH 29 L8151-04 9/28/2004 Co-58 0.OOE+00 1.20E+01 4.60E+0I FH 29 L8151-04 9/28/2004 Co-60 4.00E+00 I.IOE+0I 4.00E+0I FM 29 L8151-04 9/28/2004 Cs-134 7.20E+00 8.40E+00 3.00E+OI FH 29 L8151-04 9/28/2004 Cs-137 1.30E+00 9.50E+00 3.50E+0I FH 29 L8151-04 9/28/2004 Fe-59 1.60E+01 3.50E+01 1.30E+02 FH 29 L8151-04 9/28/2004 1-131 -4.00E+01 1.50E+02 5.60E+02 FH 29 L8151-04 9/28/2004 K-40 2.76E+03 2.80E+02 4.90E+02

FH 29 L8151-04 9/28/2004 Mn-54 5.00E+00 8.90E+00 3.20E+0I FH 29 L8151-04 9/28/2004 Ru-103 -8.00E+00 1.60E+01 6.00E+0I FH 29 L8151-04 9/28/2004 Ru-106 4.00E+00 8.60E+01 3.20E+02 FM 29 L8151-04 9/28/2004 Sb-124 -8.00E+00 2.90E+01 1.20E+02 FM 29 L8151-04 9/28/2004 Zn-65 -3.1OE+0I 2.60E+0I I.IOE+02 FH 29 L8151-04 9/28/2004 Zr-95 -1.90E+0I I.90E+01 7.80E+01 FM 29 L8151-05 9/28/2004 Ag-I Om 4.00E+00 1.IOE+OI 4.1 OE+OI FH 29 L8151-05 9/28/2004 Ba-140 7.00E+00 4.80E+0I I.90E+02 FH 29 L8151-05 9/28/2004 Be-7 -9.OOE+00 8.70E+01 3.30E+02 Fil 29 L8151-05 9/28/2004 Ce-141 2.80E+01 1.90E+01 6.20E+0I FM 29 L8151-05 9/28/2004 Cc-144 4.OOE+0I 4.10E+01 1.40E+02 Fi 29 L8151-05 9/28/2004 Co-57 . I.IOE+OO 5.60E+00 2.00E+0I Fi 29 L8151-05 9/28/2004 Co-58 -1.90E+00 9.60E+00 3.70E+0I Fil 29 L8151-05 9/28/2004 Co-60 -4.OOE+00 8.40E+00 3.50E+01 FH 29 L8151-05 9/28/2004 Cs-134 -1.60E+00 7.70E+00 3.00E+OI FH 29 L8151-05 9/28/2004 Cs-137 5.50E+00 7.50E+00 2.70E+0I FH 29 L8151-05 9/2812004 Fe-59 -1.50E+01 3.80E+01 1.50E+02 RI 29 L8151-05 9/28/2004 1-131 6.00E+0I 1.50E+02 5.30E+02 FI 29 L8151-05 9/28/2004 K-40 2.44E+03 2.40E+02 3.50E+02

FH 29 L8151-05 9/28/2004 Mn-54 -1.50E+00 8.I0E+00 3.10E+0I FH 29 L8151-05 9/28/2004 Ru-103 1.50E+0I I.IOE+OI 3.70E+0I Fi 29 L8151-05 9/28/2004 Ru-106 2.40E+01 7.70E+01 2.80E+02 FH 29 L8151-05 9/28/2004 Sb-124 2.70E+01 2.1OE+0I 7.00E+0I FR 29 L8151-05 9/28/2004 Zn-65 -2.80E+01 2.40E+01 9.50E+0I FI 29 L8151-05 9/28/2004 Zr-95 -1.40E+01 1.70E+01 6.80E+0I

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit or Detection Requirement C-10

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLTDE (pCi/ke) (pCi/Ie) (pCi/ke)

FISH FH 30 L7551-05 6/7nn4 Ag-lOim 3.00E+01 2.40E+01 8.30E+OI FH 30 L7551-05 6/7/2004 Ba-140 0.OOE+00 4.30E+01 2.20E+02 FH 30 L7551 -05 6/7/2004 Be-7 1.30E+02 1.40E+02 4.90E+02 Ff 30 L7551-05 6/7/2004 Cc-141 2.90E+01 2.50E+01 8.40E+0I FH 30 L7551-05 6/712004 Ce-144 -9.OOE+00 5.60E+01 2.10E+02 FH 30 L7551-05 6/7/2004 Co-57 -7.90E+00 7AOE+00 2.90E+0I FH 30 L7551-05 6/7/2004 Co-58 -3.80E+01 1.60E1+01 8.20E+0I Ff1 30 L7551.05 6/7/2004 Co-60 8.00E+00 1.70E+01 6.60E+0I FH 30 L7551-05 6/7/2004 Cs-134 1.30E+01 1.40E+01 5.00E+0I FH 30 L7551-05 6/72004 Cs-137 -8.OOE+00 1.40E+01 6.00E+0I FH 30 L7551-05 6/72004 Fe-59 1.59E+02 6.50E+01 1.60E+02 FH 30 L7551-05 6/7/2004 1-131 1.50E+02 1.30E+02 4.40E+02 FH 30 L7551-05 6/7/2004 K-40 2.23E+03 4.IOE+02 8.20E+02 FH 30 L7551-05 6/7/2004 Mn-54 6.OOE+00 I.IOE+0I 4.50E+OI FH 30 L7551-05 6/7/2004 Ru-103 9.OOE+00 1.80E+01 6.80E+OI FH 30 L7551-05 6/7/2004 Ru-106 -6.00E+0I I.OOE+02 4.50E+02 FH 30 L7551-05 6/2004 Sb-124 O.OOE+00 0.OOE+0O 5.40E+0I FH 30 L7551-05 6/7/2004 Zn-65 -2.10E+01 3.60E+01 1.60E+02 FH 30 L7551-05 6/7/2004 Zr-95 -2.OOE+01 2.10E+01 I.OOE+02 FH 30 L7551-06 6/8/2004 Ag-I tOm 2.30E+00 9.00E+00 3.20E+0I Ffl 30 L7551-06 6/8/2004 Ba-140 -3.00E+01 2.90E+01 1.20E+02 Fft 30 L7551-06 6/8/2004 Be-7 -9.60E+01 6.OOE+01 2.30E+02 FH 30 L7551-06 6/8/2004 Ce-141 -I.OOE+00 1.30E+01 4.50E+0I FH 30 L7551-06 6/8/2004 Ce-144 -3.OOE+01 3.20E+01 1.IOE+02 FH 30 L7551-06 6/8/2004 Co-57 1.80E+00 4.00E+00 I.AOE+OI Ff1 30 L7551-06 6/8/2004 Co-58 7.80E+00 6.40E+00 2.20E+0I FH 30 L7551-06 6/8/2004 Co-60 7.40E+00 5.80E+00 2.OOE+0I FH 30 L7551-06 6/8/2004 Cs-134 3.40E+00 6.40E+00 2.30E+0I Ff1 30 L7551-06 6/8/2004 Cs-137 1.62E+01 6.40E+00 2.OOE+0I Ff1 30 L7551-06 6/8/2004 Fe-59 1.50E+01 2.10E+01 7.50E+0I Ff1 30 L7551.06 6/8/2004 1-131 6.30E+01 6.20E+01 2.10E+02 FH 30 L7551.06 6/8/2004 K-40 2.30E+03 1.70E+02 2.70E+02

Ftl 30 L7551-06 6/8/2004 Mn-54 -1.60E+00 6.10E+00 2.20E+0I Ftl 30 L7551-06 6/8/2004 Ru-103 2.90E+00 8.60E+00 3.00E+0O Ff1 30 L7551.06 6/8/2004 Ru-106 -3.20E+01 5.50E+01 2.00E+02 FtJ 30 L7551-06 6/8/2004 Sb-124 1.60E+01 1.50E+01 5.40E+0I Ff1 30 L7551-06 6/8/2004 Zn-65 -2.70E+0I - 1.50E+01 6. 10E+0I FH 30 L7551-06 6/8/2004 Zr-95 -3.00E+00 1.30E+01 4.70E+0I

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ lMinimum Detectable Concentration > Lower Limit of Detection Requirement C-Il

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/k) (pCi/kg) (WCi/t)

FISH FH 30 L8151-06 9/28/2004 Ag-llOm O.OOE+OO 1.40E+01 5.40E+01 FH 30 L8151-06 9/28/2004 Ba-140 7.80E+01 5.50E+01 1.80E+02 FH 30 L8151-06 9/28/2004 Be-7 0.OOE+00 9.70E+01 3.70E+02 FIl 30 L8151-06 9/28/2004 Ce-141 -6.O0E+00 2.20E+01 7.90E+01 FH 30 L8151-06 9128/2004 Ce-144 -2.40E+01 4.50E+01 1.70E+02 FH 30 L8151-06 9/28/2004 Co-57 4.20E+00 5.60E+00 1.90E+0O FH 30 L8151-06 9/28/2004 Co-58 -2.42E+01 9.70E+00 4.80E+O1 FMl 30 L8151-06 9/28/2004 Co-60 I.OOE+OO 1.IOE+0I 4.20E+01 FH 30 L8151-06 9/28/2004 Cs-134 -1.59E+01 8.70E+00 4.10E+0I FH 30 L8151-06 9/28/2004 Cs-137 1.OOE+0I 1.OOE+0I 3.50E+0I FM 30 L8151-06 9/28/2004 Fe-59 -2.40E+01 5.00E+01 2.OOE+02 FMl 30 L8 151-06 9/28/2004 1-131 0.00E+00 1.70E+02 6.1 OE+02 FMH 30 L8151-06 9/28/2004 K-40 2.58E+03 3.00E+02 5.30E+02

FH 30 L8151-06 9/28/2004 Mn-54 8.20E+00 9.IOE+00 3.20E+0I FH 30 L8151-06 9/28/2004 Ru-103 I.OOE+OI 1.40E+01 4.90E+0O FM 30 L8151-06 9/28/2004 Ru-106 -2.1 IE+02 9.20E+01 4.00E+02 FM 30 L8151-06 9/28/2004 Sb-124 2.00E+01 1.40E+01 2.80E+01 FH 30 L8151-06 9/28/2004 Zn-65 -3.60E+01 2.1OE+01 9.80E+OI FH 30 L8151-06 9/28/2004 Zr-95 3.OOE+01 2.40E+01 8.00E+OI FH 30 L8151-07 9/27/2004 Ag-IlOm 2.30E+01 1.30E+01 4.20E+0I FH 30 L8151-07 9/27/2004 Ba-140 I.48E+02 7.80E+01 2.30E+02 FM 30 L8151-07 9/27/2004 Be-7 -4.OOE+01 7.90E+01 3.30E+02 FH 30 L8151-07 9/27/2004 Ce-141 3.20E+01 1.80E+01 5.90E+01 FM 30 L8151-07 9/27/2004 Ce-144 I.90E+0I 3.70E+01 1.30E+02 FM 30 L8151-07 9/27/2004 Co-57 O.OOE+OO 4.50E+00 1.60E+OI FIJ 30 L8151-07 9/27/2004 Co-58 -I.OOE+OI 1.20E+01 5.20E+0O FM 30 L8151-07 9/27/2004 Co-60 -9.OOE+00 I.OOE+0I 4.70E+0I FH 30 L8151-07 9/27/2004 Cs-134 1.30E+0I I.OOE+OI 3.60E+0I FH 30 L8151-07 9/27/2004 Cs-137 6.1OE+00 9.40E+00 3.40E+0I FH 30 L8 151-07 9/27/2004 Fe-59 4.70E+01 4.20E+0I I.SOE+02 FM 30 L8151-07 9/27/2004 1-131 -1.80E+02 I.IOE+02 5.20E+02 FH 30 L8151-07 9/27/2004 K-40 I.58E+03 2.60E+02 5.20E+02

FH 30 L8151-07 9/27/2004 Mn-54 -6.00E+00 I.OOE+0I 4.30E+01 FH 30 L8151-07 9/27/2004 Ru-103 -2.90E+0I 1.50E+01 6.60E+0I FM 30 L8151-07 9/27/2004 Ru-106 1.80E+01 7.40E+01 2.80E+02 FH 30 L8151-07 9/27/2004 Sb-124 2.50E+01 2.50E+01 9.20E+01 FM 30 L8151-07 9/27/2004 Zn-65 .1.80E+01 1.80E+01 6.50E+0I FMH 30 L8151-07 9/27/2004 Zr-95 -2.40E+01 2.20E+01 9.60E+0I

Radioactivity detected In sample (ie., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement C-12

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (nCilkg) (pCi/Ik) (nCi/kt)

SEDIMiENT SE 28 L7553-01 6/7f2004 AcTh-228 6.88E+02 7.90E+01 2.90E+02

SE 28 L7553-01 617/2004 Be-7 1.20E+02 2.20E+02 7.60E+02 SE 28 L7553-01 617f2004 Co-58 -IAOE+0 2.00E+01 7.60E+0I SE 28 L7553-01 617/2004 Co-60 2.20E+01 1.60E+01 5.50E+0I SE 28 L7553-01 617/2004 Cs-134 5.OOE+00 1.60E+01 5.80E+01 SE 28 L7553-01 617/2004 Cs-137 1.41E+02 2.70E+01 7.40E+0

SE 28 L7553-01 617/2004 K-40 1.09E+04 5.90E+02 6.70E+02

SE 28 L8176-01 9/27/2004 AcTh-228 8.28E+02 7.SOE+01 2.40E+02

SE 28 L8176-01 9/27/2004 Be-7 4.50E+02 2.10E+02 6.80E+02 SE 28 L8176-01 9127/2004 Co-S8 -7.00E+00 1.40E+0 5.40E+0I SE 28 L8176-01 9127/2004 Co-60 -1.40E+01- 2.00E+01 7.90E+0I SE 28 L8176-01 9/27/2004 Cs-134 -2.1OE+OI I .90E+01 6.90E+0O SE 28 L8176-01 9/27/2004 Cs-137 1.02E+02 2.90E+01 8.60E+01 S SE 28 L8176-01 9/27/2004 K-40 1.18E+04 6.20E+02 6.60E+02 SE 29 L7553-02 6n12004 AcTh-228 3.91E+02 5.80E+01 2.OOE+02

SE 29 L7553-02 617/2004 Be-7 5.40E+02 1.60E+02 4.70E+02 SE 29 L7553-02 617/2004 Co-58 -2.50E+01 1.40E+01 5.70E+OI SE 29 L7553-02 617/2004 Co-60 -5.OOE+00 1.20E+01 4.80E+OI SE 29 L7553-02 6n12004 Cs-134 -1.60E+O1 1.30E+01 4.90E+OI SE 29 L7553-02 6/7/2004 Cs-137 9.40E+01 2.10E+0I 5.90E+OI

SE 29 L7553-02 6no2004 K-40 1.1I E+04 5.20E+02 4.70E+02

SE 29 L8176-02 9/27/2004 AcTh-228 7.00E+02 5.00E+0I I.90E+02

SE 29 L8176-02 9/27/2004 Be-7 3.1OE+02 1.20E+02 3.80E+02 SE 29 L8176-02 9/27/2004 Co-58 -1.50E+01 1.20E+01 4.60E+0I SE 29 L8176-02 9/27/2004 Co-60 5.70E+O1 1.20E+01 4.60E+0I

SE 29 L8176-02 9/27/2004 Cs-134 3.00E+00 I.OOE+0I 3.60E+0I SE 29 L8176-02 9/27/2004 Cs-137 1.1I E+02 2.00E+01 5.60E+0I

SE 29 L8176-02 9/27/2004 K-40 1.06E+04 4.50E+02 4.90E+02

SE 30 L7553-03 617/2004 AcTh-228 6.09E+02 5.60E+OI I.90E+02

SE 30 L7553-03 617/2004 Be-7 3.OOE+01 1.20E+02 4.1OE+02 SE 30 L7553-03 6/7/2004 Co-58 -2.00E+01 1.20E+01 4.80E+O1 SE 30 L7553-03 617/2004 Co-60 -I.IOE+0I 1.30E+OI 5.30E+OI SE 30 L7553-03 6n12004 Cs-134 -8.20E+00 9.30E+00 3.50E+0O SE 30 L7553-03 6n12004 Cs-137 1.55E+02 2.1OE+OI 5.20E+OI

SE 30 L7553-03 617/2004 K40 9.24E+03 4.80E+02 6.20E+02

SE 30 L8176-03 9/2812004 AcTh-228 8.81E+02 3.50E+01 1.20E+02

SE 30 L8176-03 9/2812004 Be-7 8.00E+02 I.IOE+02 3.10E+02

SE 30 L8176-03 9/28/2004 Co-58 -8.00E-01 7.50E+00 2.60E+0I SE 30 L8176-03 9/28/2004 Co-60 6.OOE+00 7.90E+00 2.70E+0I SE 30 L8176-03 9/2812004 Cs-134 -I .OOE+00 8.30E+00 2.90E+0O SE 30 L8176-03 9/28/2004 Cs-137 9.00E+01 1.40E+01 4.00E+OI 0

SE 30 L8176-03 9/28/2004 K40 1.20E+04 3.10E+02 3.00E+02 *

Radioactivity detected In samplc (i.e, concentration > 3 X standard deviation)

+ linimum Detectable Concentration > Lower Limit of Detection Requirement C-13

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (nCi/ke) (nCi/ke) (nCi/ke)

SHELLFISH SF 27 L7551-08 6/8/2004 Ag-I lOm -1.20E+0I I.40E+O1 6.1 OE+OI SF 27 L7551-08 6/8/2004 Ba-140 3.80E+0I 6. 1OE+OI 2.30E+02 SF 27 L7551-08 6/8/2004 Be-7 2.70E+02 1.20E+02 3.80E+02 SF 27 L7551-08 6/8/2004 Ce-141 -3.1 OE+OI 2.30E+0O 8.80E+O1 SF 27 L7551-08 6/8/2004 Ce-144 -2.80E+01 5.80E+0I 2.1 OE+02 SF 27 L7551-08 6/8/2004 Co-57 5.20E+00 6.70E+00 2.30E+0O SF 27 L7551-08 6/8/2004 Co-58 -2.00E+00 1.30E+0O 5.10E+0I SF 27 L7551-08 6/8/2004 Co-60 1.20E+01 1.l1OE+0I 3.90E+0I SF 27 L7551-08 6/812004 Cs-134 -1.20E+01 1.l1OE+0I 5.00E+0O SF 27 L7551-08 6/8/2004 Cs-137 4.OOE+00 1.20E+0O 4.30E+0O SF 27 L7551-08 6/8/2004 Fe-59 3.10E+0I 2.90E+01 1.50E+02 SF 27 L7551-08 6/8/2004 1-131 -9.OOE+0O 1.20E+02 4.50E+02 SF 27 L7551-08 6/812004 K-40 5.20E+02 1.60E+02 3.60E+02 SF 27 L7551-08 6/8/2004 Mn-54 O.OOE+00 I .OOE+0I 4.00E+0O SF 27 L7551-08 61812004 Ru-103 -1.80E+01 '1.50E+0I 6.20E+01 SF 27 L7551-08 6/812004 Ru-106 1.80E+02 l .IOE+02 3.40E+02 SF 27 L7551-08 6/8/2004 Sb-124 0.00E+00 2.60E+OI 1.20E+02 SF 27 L7551-08 6/8/2004 Zn-65 -1 .40E+0I 3.00E+O1 1.20E+02 SF 27 L7551-08 6/8/2004 Zr-95 1.00E+00 2.30E+OI 9.00E+O I SF 27 L8151-03 9/28/2004 Ag-110m -1.70E+OI 1.70E+0I 7.50E+0O SF 27 L8151-03 9/28/2004 Ba-140 2.90E+0O 7.70E+O1 3.10E+02 SF 27 L8151-03 9/28/2004 Be-7 5.00E+OI 1.IOE+02 3.90E+02 SF 27 L8151-03 9/28/2004 Ce-141 O.OOE+00 2.30E+0I 8.40E+OI SF 27 L8151-03 9/28/2004 Ce-144 3.90E+OI 4.80E+0O 1.70E+02 SF 27 L8151-03 9/28/2004 Co-57 -5.60E+OO 6.50E+00 2.50E+01 SF 27 L8151-03 9/28/2004 Co-58 -2.40E+O I 1.30E+01 6.40E+0I SF 27 L8151-03 9/28/2004 Co-60 1.1OE+O1 1.30E+01 5.80E+0O SF 27 L8151-03 9/28/2004 Cs-134 1.30E+0I 1.40E+01 5.00E+01 SF 27 L8151-03 9/28/2004 Cs-137 2.80E+0O 1.40E+0O 4.30E+0I SF 27 L8151-03 9/28/2004 Fe-59 -4.30E+0O 5.40E+0O 2.40E+02 SF 27 L8151-03 9/28/2004 1-131 l.00E+02 2.00E+02 7.00E+02 SF 27 L8151-03 9/28/2004 K-40 2.03E+03 3.20E+02 5.40E+02

SF 27 L8151-03 9/28/2004 Mn-54 -5.00E+00 1.IOE+0I 4.60E+0O SF 27 L8151-03 9/28/2004 Ru-103 -2.1OE+OI 1.50E+0O 6.70E+O1 SF 27 L8151-03 9/28/2004 Ru-106 -4.00E+00 9.40E+0O 3.70E+02 SF 27 L8151-03 9/28/2004 Sb-124 6.1 OE+OI 3.1 OE+OI 4.1 OE+OI SF 27 L8151-03 9/28/2004 Zn-65 -1.50E+0O 3.40E+0O 1.40E+02 SF 27 L8151-03 928/2004 Zr-95 6.00E+00 2.40E+O1 9.50E+O1

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ l~Minimum Detectable Concentration > Lower Limit of Detection Requirement C-14

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYvP I

VTATtANM

. A 1.-**V Tl.M LaflM nATF tf

G NlTT TrT IrTI I ILLtLG -t3K 19../Nt 111--K SHELLFISH SF 31 L7551-07 6n/20o4 Ag-I lOm 1.50E+01 I 50E+0I 5.30E+01 SF 31 L7551-07 6n/2004 Ba-140 7.60E+0I 6.60E+01 2.30E+02 SF 31 L7551-07 6nn/2 Be-7 -I.40E+02 1. I OE+02 4.50E+02 SF 31 L7551-07 6nnow Ce-141 3.OOE+00 2.40E+01 8.60E+0I SF 31 L7551-07 6nnow Ce-i44 -5.60E+01 4.60E+01 1.80E+02 SF 31 L7551-07 6n/2004 Co-57 -1.09E+01 5.IOE+00 2.10E+01 SF 31 L7551-07 6/2004 Co-58 -5.soE+00 9.90E+00 4.30E+01 SF 31 L7ss5-07 6n/20o4 Co-60 9.soE+00 9.50E+00 3.40E+0I SF 31 L7551-07 6n/20o4 Cs-134 5.OOE+00 1.30E+01 4.70E+0I SF 31 L7551-07 617nn Cs-137 2.OOE+0I I.IOE+01 3.30E+0I SF 31 L7551-07 6n/2oo4 Fe-59 -8.OOE+00 4.20E+01 1.80E+02 SF 31 L7551-07 6NN204 1-131 -5.90E+01 9.80E+01 3.90E+02 SF 31 L7551-07 6n/2004 K-40 3.20E+02 I .60E+02 4.80E+02 SF 31 L7551-07 6/7/2004 Mn-54 -5.OOE+00 1.30E+OI 4.90E+O1 SF 31 L7551-07 6n/2004 Ru-103 O.OOE+00 .SOE+O1 5.50E+O1 SF 31 L7551-07 6/7/2004 Ru-106 .90E+01 9.1OE+01 3.50E+02 SF 31 L7551-07 6/7/2004 Sb-124 5.OOE+OI 3.10E+01 5.40E+02 SF 31 L7551-07 6/7/2004 Zn-65 -1.90E+01 3.IOE+01 1.20E+02 SF 31 L7551-07 6/7/2004 Zr-95 -4.OOE+OO 2.60E+01 I1.OOE+02 SF 31 L8151-08 9/28/2004 Ag-I lOm -1.20E+01 1.30E+0O 5.20E+01 SF 31 L8151-08 9/28/2004 Ba-140 L.soE+Ol 6.soE+01 2.50E+02 SF 31 L8151-08 9/28/2004 Be-7 -L.IOE+02 I.OOE+02 4.00E+02 SF 31 L8151-08 9/28/2004 Cc-141 -1.soE+01 2.soE+01 9.1OE+OI SF 31 L8151-08 9/28/2004 Cc-144 4.40E+01 5.40E+01 1.80E+02 SF 31 LB 151-08 9/28/2004 Co-57 -5.30E+00 7.00E+00 2.60E+0I SF 31 L8151-08 9/28/2004 Co-5B 2.00E+00 1.20E+01 4.40E+01 SF 31 L8151-08 9/28/2004 Co-60 9.OOE+00 1.1 OE+01 3.80E+0I SF 31 L8151-08 9/28/2004 Cs-134 I .07E+01 9.80E+0o 3.40E+0I SF 31 LS 151-08 9/28/2004 Cs-137 0.00E+00 1.IOE+O1 3.90E+0I SF 31 L8151-08 9/28/20o4 Fe-59 *5.SOE+01 3.soE+OI 1.60E+02 SF 31 L8151-08 9/28/2004 1-131 1.30E+02 .80E+02 6.40E+02 SF 31 L8151-08 9/28/2004 K-40 1.20E+02 1.40E+02 4.90E+02 SF 31 LS 151-08 9/28/2004 NMn-54 L.OOE+0I .IOE+01 3.70E+O1 SF 31 LB 151-08 9/28/2004 Ru-103 O.OOE+OO L.soE+01 5.40E+0I SF 31 L8151-08 9/28/2004 Ru-106 -7.00E+O0 9.70E+01 3.60E+02 SF 31 L8151-08 9/2812004 Sb-124 -3.9OE+01 2.60E+01 1.20E+02 SF 31 L8151-08 9/28/2004 Zn-65 -7.70E+OI 2.40E+01 1.IOE+02 SF 31 L8151-08 9/28/2004 Zr-95 4.00E+00 2.20E+0I 8.00E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement C-15

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kt) (pCi/kit) (pCi/kg)

ISFSI SEDIMENT Si 57 L7553-04 6/812004 AcTh-228 6.31E+02 8.50E+01 2.70E+02 Si 57 L7553-04 61812004 Be-7 0.00E+00 2.40E+02 8.70E+02 Si 57 L7553-04 6/8/2004 Co-58 -3.00E+00 2.00E+01 7.50E+01 Si 57 L7553-04 6/812004 Co-60 -3.40E+01 2.20E+01 9.00E+01 Si 57 L7553-04 6/8/2004 Cs-134 2.50E+01 2.20E+01 7.40E+01 Si 57 L7553-04 618/2004 Cs-137 2.97E+02 3.80E+01 9.00E+01

Si 57 L7553-04 6/8/2004 K-40 1.09E+04 6.50E+02 6.10E+02

Si 57 L8176-04 9/28/2004 AcTh-228 6.46E+02 2.90E+01 1.00E+02

Si 57 L8176-04 9/28/2004 Be-7 3.50E+01 6.90E+01 2.30E+02 SI 57 L8176-04 9/28/2004 Co-58 -1.31E+01 7.00E+00 2.50E+01 Sl 57 L8176-04 9/28/2004 Co-60 1.24E+01 6.40E+00 2.10E+01 SI 57 L8176-04 9/28/2004 Cs-134 -2.80E+01 2.50E1+01 8.50E+01 Si 57 L8176-04 9/28/2004 Cs-137 4.70E+02 1.60E+01 3.10E+01

SI 57 L8176-04 9/28/2004 K-40 1.1 IE+04 2.60E+02 2.40E+02

Sl 58 L7553-05 6/8/2004 Acfb-228 8.90E+02 7.20E+01 2.50E+02

Sl 58 L7553-05 6/8/2004 Be-7 2.00E+01 1.90E+02 6.60E+02 SI 58 L7553-05 6/8/2004 Co-58 1.70E+01 1.90E+01 6.70E+01 SI 58 L7553-05 6/8/2004 Co-60 1.00E+01 1.50E+01 5.20E+01 Si 58 L7553-05 6/8/2004 Cs-134 -2.10E+01 1.70E+01 6.20E+01 Sl 58 L7553-05 6/8/2004 Cs-137 9.00E+01 2.40E+01 7.30E+01

Sl 58 L7553-05 6/8/2004 K40 1.29E+04 5.90E+02 5.20E+02

SI 58 L8176-05 9/28/2004 AcTh-228 8.98E+02 4.70E+01 1.50E+02

Sl 58 L8176-05 9/28/2004 Be-7 . 4.30E+01 9.50E+01 3.30E+02 S1 58 L8176-05 9128/2004 Co-58 8.00E+00 1.I1E+0I 3.90E+01 SI 58 L8176-05 9/28/2004 Co-60 3.00E+00 1.20E+01 4.30E+01 SI 58 L8176-05 9/2812004 Cs-134 -1.07E+01 9.90E+00 3.60E+01 Sl 58 L8176-05 9/28/2004 Cs-137 6.90E+0I 1.80E+01 5.60E+Ot1 Sl 58 L8176-05 9/28/2004 K40 1.0IE+04 4.10E+02 4.30E+02

Radioactivity detected In sample (ie., concentration > 3 X standard deviation)

+. Mlinimum Detectable Concentration > Lower Llmit of Detection Requirement C-16

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NIJCLIDE ; tpr4';IIf, tILl/} J lslrxl {n~i/kv) ryv~i/v Zwalrzal FOOD CROP TF 17 L7715-0l 7/12/2004 Co-58 -9.OOE+00 1.30E+OI 5.40E+01 TF 17 L7715-0l 7/12/2004 Co-60 9.OOE+00 1.20E+O1 4.60E+01 TF 17 L7715-0l 7/12/2004 Cs-134 1.38E+01 9.60E+O0 3.20E+01 TF 17 L77l5-01 7/122004 Cs-137 2.00E+00 I .IOE+0 4.20E+01 TF 17 L7715-0l 7/12/2004 1-131 *1.IOE+01 2.10E+OI 8.20E+01 TF 17 L7715-0l 7/12n2004 K-40 2.12E+03 3.10E+02 4.60E+02 TF 17 L8032-01 9n12004 Co-58 -9.20E+00 7.8OE+O0 3.60E+01 TF 17 L8032-01 n172004 Co-60 1.I OE+0I .IOE+01 3.90E+01 TF 17 L8032-01 9n72004 Cs-134 3.00E+00 1.30E+01 4.90E+01 TF 17 L8032-01 9n72004 Cs-l 37 I. IOE+01 1.20E+01 4.10E+01 TF 17 L8032-01 9n12004 1-131 3.80E+01 2.00E+0I 6.40E+0 I TF 17 L8032-01 n1/2004 K-40 1.27E+03 2.50E+02 5.40E+02 TF 25 L7715-02 7/12/2004 Co-58 2.40E+00 9.20E+O0 3.60E+01 TF 25 L77 15-02 7/12/2004 Co-60 L.00E+01 1.40E+OI s.00E+01 TF 25 L7715-02 7/12V2004 Cs-134 -1.70E+0I I.20E+01 5.20E+01 TF 25 L7715-02 7/12/2004 Cs-137 4.00E+00 I .20E+01 4.50E+01 TF 25 L7715-02 7/12n2004 1-131 1.60E+01 1.70E+0I 5.80E+01 TF 25 L7715-02 7/12/2004 K-40 2.I8E+03 3.10E+02 5.60E+02 TF 25 L8032-02 n1n2004 CO-58 -1.29E+01 7.40E+00 3.30E+01 TF 25 L8032-02 9nn2004 Co-60 4.20E+00 8.40E+00 3.20E+01 TF 25 L8032-02 n172004 Cs-134 5.20E+00 7.40E+O0 2.70E0+I TF 25 L8032-02 9n12004 Cs-137 4.40E+00 7.10E+O0 2.60E+01 TF 25 L8032-02 n172004 1-131 -2.40E+0I .IOE+OI 4.70E+0I TF 25 L8032-02 9no2004 K-40 1.06E+03 .90E+02 4.30E+02 Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement C-17

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/lk) (pCi/t) (pCi/Ik)

BROAD LEAF VEGETATION TV 6 L7425-01 5/17/2004 Co-58 -5.90E+00 8.10E+00 3.10E+41 TV 6 L7425-01 5/17/2004 Co-60 -1.96E+01 8.30E+00 3.70E+OI TV 6 L7425-01 5/17/2004 Cs-134 -5.10E+00 9.20E+00 3.50E+0O TV 6 L7425-01 5/17/2004 Cs-137 6.30E+00 7.10E+00 2.50E+0I TV 6 L7425-01 5/17/2004 1-131 1.20E+0I I.IOE+OI 3.60E+0I TV 6 L7425-01 5/17/2004 K40 3.18E+03 2.50E+02 3.60E+02

TV 6 L7554-01 6/1412004 Co-58 -2.OOE+00 1.70E+01 6.40E+O1 TV 6 L7554-01 6/1412004 Co-60 I.IOE+0 1.60E+41 5.70E+41 TV 6 L7554-01 6114/2004 Cs-134 5.OOE+00 1.50E+01 5.60E+01 TV 6 L7554-01 6/14/2004 Cs-137 O.OOE+0O 1.20E+41 4.60E+O1 TV 6 L7554-01 6/14/2004 1-131 2.80E+41 6.80E+41 2.50E+02 TV 6 L7554-01 6/14/2004 K40 3.24E+03 4.30E+02 8.1OE+02

TV 6 L7714-01 7/12/2004 Co-58 -I.OOE+OI 1.30E+41 S.50E+OI TV 6 L7714-01 7/12/2004 Co-60 1.50E+O1 I.50E+01 5.20E+41 TV 6 L7714-01 7/12/2004 Cs-134 1.80E+41 1.40E+01 4.90E+01 TV 6 L7714-01 7/12/2004 Cs-137 1.80E+01 1.30E+01 4.20E+01 TV 6 L7714-01 7/12/2004 1-131 2.OOE+00 2.30E+01 8.90E+01 TV 6 L7714-01 7/12/2004 K40 2.77E+03 3.70E+02 5.60E+02

TV 6 L7886-01 8/9/2004 Co-58 O.OOE+0O 1.20E+01 4.30E+01 TV 6 L7886-01 8/9/2004 Co-60 1.50E+01 1.30E+01 4.30E+01 TV 6 L7886-01 8/9/2004 Cs-134 -1.30E+01 1.20E+01 4.70E+01 TV 6 L7886-01 8/9/2004 Cs-137 I.OOE+OO 1.OOE+01 3.70E+0I TV 6 L7886-01 8/9/2004 1-131 1.60E+0I 1.70E+01 5.90E+0I TV 6 L7886-01 8/9/2004 K40 2.74E+03 2.90E+02 4.70E+02

TV 6 L8031-01 9/7/2004 Co-58 O.OOE+00 1.40E+41 5.30E+0I TV 6 L803I-01 9/7/2004 Co-60 -2.OOE+01 1.60E+01 6.70E+0I TV 6 L803I-01 9/7/2004 Cs-134 -6.OOE+00 1.40E+01 5.30E+0I TV 6 L8031-01 9/7/2004 Cs-137 2.20E+01 1.30E+41 4.20E+0I TV 6 L8031-01 9/7/2004 1-131 -1.31E+02 6.50E+01 2.60E+02 TV 6 L8031-01 9/7/2004 K40 4.15E+03 4.10E+02 6.80E+02

TV 6 L8200-01 10/4/2004 Co-58 -9.OOE+00 1.60E+01 6.40E+41 TV 6 L8200-01 10/4/2004 Co-60 1.OOE+01 1.40E+01 5.20E+0I TV 6 L8200-01 10/4/2004 Cs-134 -1.60E+0I IAOE+OI 6.00E+01 TV 6 L8200-01 10/4/2004 Cs-137 1.OOE+01 IAOE+OI 4.90E+01 TV 6 L8200-01 10/4/2004 1-131 2.80E+01 6.30E+01 2.30E+02 TV 6 L8200-01 10/4/2004 K40 3.40E+03 3.80E+02 6.60E+02

TV 6 L8382-01 11/1/2004 Co-58 -1.50E+01 1.80E+01 6.60E+0I TV 6 L8382-01 11/1/2004 Co-60 -1.90E+01 I1AOE+OI 5.50E+01 TV 6 L8382-01 11/1/2004 Cs-134 -2.90E+01 1.50E+01 5.70E+0I TV 6 L8382-01 11/1/2004 Cs-137 2.30E+01 1.60E+01 5.20E+01 TV 6 L8382-01 1I/l/2004 1-131 2.00E+02 1.30E+02 4.30E+02 TV 6 L8382-01 111//2004 K40 4.13E+03 3.50E+02 7.40E+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower LImit of Detection Requirement C-18

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE , x (nCri1.-&)

Inri/k-c) x . x (nritkr)

BROAD LEAF VEGETATION TV 13 L7425-02 5/17/2004 Co-58 -9.70E+00 6.70E+00 2.80E+01 TV 13 L7425-02 5/17/2004 Co-60 -5.90E+00 8.1 OE+00 3.20E+0 I TV 13 L7425-02 5/17/2004 Cs-134 9.30E+00 6.60E+00 2.20E+01 TV 13 L7425-02 5/17/2004 Cs-137 5.10E+01 1.20E+01 3.30E+01 TV 13 L7425-02 5/17/2004 1-131 0.00E+00 1.20E+01 4.30E+01 TV 13 L7425-02 5/17/2004 K-40 2.57E+03 2.20E+02 3.70E+02 TV 13 L7554-02 6/14/2004 Co-58 0.00E+00 1.40E+0I 5.30E+0I TV 13 L7554-02 6/14/2004 Co-60 -1.40E+01 1.30E+01 5.40E+01 TV 13 L7554-02 6/14/2004 Cs-134 -1.20E+01 l.lOE+0I 4.50E+0I TV 13 L7554-02 6/14/2004 Cs-137 7.00E+00 1.20E+0O 4.20E+0I TV 13 L7554-02 6/14/2004 1-131 -1.80E+01 6.80E+0I 2.50E+02 TV 13 L7554-02 6/14/2004 K-40 1.95E+03 2.80E+02 6.00E+02

TV 13 L7714-02 7t1212004 Co-58 -1.30E+01 1.30E+0I 5.40E+OI TV 13 L7714-02 7/12/2004 Co-60 2.50E+01 1.70E+0I 5.60E+0I TV 13 L7714-02 7/12/2004 Cs-134 -2.00E+00 1.40E+01 5.40E+0I TV 13 L7714-02 7/12/2004 Cs-137 4.50E+01 1.80E+0I 5.40E+0I TV 13 L7714-02 7/12/2004 1-131 3.50E+0I 3.00E+O1 1.00E+02 TV 13 L7714-02 7/12/2004 K-40 2.78E+03 4.00E+02 8.20E+02 TV 13 L7886-02 8/9/2004 Co-58 2.50E+0I I .IOE+0I 3.1 OE+O1 TV 13 L7886-02 819/2004 Co-60 -3.00E+00 1.30E+OI 5.1OE+OI TV 13 L7886-02 8/9/2004 Cs-134 -1.30E+0I 1.30E+0I 5.50E+0I TV 13 L7886-02 8/9/2004 Cs-137 2.00E+00 l .lOE+0I 4.10E+0I TV 13 L7886-02 8/9/2004 1-131 -2.40E+01 2.60E+0O l.00E+02 TV 13 L7886-02 8/9/2O04 K-40 3.00E+03 3.60E+02 5.20E+02 TV 13 L8031-02 9n72004 Co-58 -2.00E+00 I.00E+0I 4.60E+0I TV 13 L8031-02 9nn2004 Co-60 O.OOE+00 1.30E+0O 5.50E+0I TV 13 L8031-02 9nn2004 Cs-134 1.00E+00 1.30E+0O 5.40E+0I TV 13 L8031-02 9n72004 Cs-137 0.00E+00 I.IOE+OI 4.40E+0I TV 13 L8031-02 9nno004 1-131 5.60E+0I 4.40E+0I 1.50E+02 TV 13 L8031-02 9n72004 K-40 1.69E+03 3.30E+02 6.00E+02 TV 13 L8200-02 10/4/2004 Co-58 I .00E+0I 1.20E+0I 4.60E+O1 TV 13 L8200-02 10/4/2004 Co-60 4.00E+00 1.20E+0O 5.1 OE+0I TV 13 L8200-02 10/4/2004 Cs-134 2.70E+0O 1.50E+0I 4.90E+0I TV 13 L8200-02 10/4o2004 Cs-137 6.00E+00 1.30E+O1 4.80E+0I TV 13 L8200-02 10/4n2004 1-131 -1.16E+02 6.1OE+OI 2.60E+02 TV 13 L8200-02 10/4/2004 K-40 2.01 E+03 3.70E+02 7.30E+02 TV 13 L8382-02 11/1/2004 Co-58 -2.20E+0I 1.70E+OI 6.90E+0I TV 13 L8382-02 11/1/2004 Co-60 2.00E+0O 1.60E+0I 5.40E+0I TV 13 L8382-02 1I/l/2004 Cs-134 1.80E+0I 1.40E+0I 4.60E+0I TV 13 L8382-02 1I/l/2004 Cs-137 2.80E+01 1.60E+0I 5.40E+0I TV 13 L8382-02 I1/1/2004 1-131 6.00E+0O I.IOE+02 3.70E+02 TV 13 L8382-02 11l/2004 K-40 3.06E+03 3.70E+02 7.10E+02 Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

Minimum Detectable Concentration > Lower Limit of Detection Requirement C-19

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCift) (pCifk) (PCi/c)

BROAD LEAF VEGETATION TV 18 L7425-03 5/17/2004 Co-58 -3.40E+00 8.90E+00 3.50E+01 TV 18 L7425-03 5/17/2004 Co-60 -6.60E+00 7.70E+00 3.50E+01 TV 18 *L7425-03 5/17/2004 Cs-134 -8.1OE+00 7.70E+00 3.30E+0I TV 18 L7425-03 5/17/2004 Cs-137 4.20E+01 1.20E+01 3.40E+0I1 TV 18 L7425-03 5/17/2004 1-131 -1.OOE+01 1.OOE+0 4.OOE+01 TV 18 L7425-03 5/17/2004 K-40 3.01E+03 3.10E+02 5.20E+02 TV 18 L7554-03 6/14/2004 Co-58 4.00E+00 1.30E+01 S.20E+01 TV 18 L7554-03 6/14/2004 Co-60 2.10E+01 1.70E+01 5.80E+01 TV 18 L7554-03 6/14/2004 Cs-134 l.OOE+O0 1.20E+01 4.90E+0I TV 18 L7554-03 6/14/2004 Cs-137 3.10E+01 1.40E+01 4.40E+0I TV 18 L7554-03 6/14/2004 1-131 4.80E+01 6.80E+0I 2.40E+02 TV 18 L7554-03 6/1412004 K.40 2.26E+03 3.50E+02 5.00E+02 TV 18 L7714-03 7/12/2004 Co-58 1.70E+01 1.30E1+01 4.40E+0I TV 18 L7714-03 7/12/2004 Co-60 -2.00E+00 l.50E+01 5.80E+O1 TV 18 L7714-03 7/12/2004 Cs-134 -5.OOE+00 1.50E+01 5.60E+0I TV 18 L7714-03 7/12/2004 Cs-137 3.IOE+01 1.30E+01 4.OOE+OI TV 18 L7714-03 7/12/2004 1-131 2.70E+01 3.40E+01 1.20E+02 TV 18 L7714-03 7/12/2004 K-40 4.19E+03 4.10E+02 7.30E+02

TV 18 L7886-03 8/9/2004 Co-58 -3.30E+01 1.70E+01 6.50E+01 TV 18 L7886-03 8/9/2004 Co-60 2.60E+01 1.60E+01 5.20E+0I TV 18 L7886-03 8/9/2004 Cs-134 2.10E+01 1.70E+01 5.80E+0I TV 18 L7886-03 8/9/2004 Cs-137 9.00E+00 1.60E+01 5.40E+01 TV 18 L7886-03 819/2004 1-131 -3.OOE+00 3.20E+0I I.IOE+02 TV 18 L7886-03 8/9/2004 K-40 3.26E+03 3.70E+02 8.70E+02 TV 18 L8031-03 9n72004 Co-58 3.OOE+00 I.IOE+O1 3.70E+OI TV 18 L8031-03 917/2004 Co-60 5.30E+00 9.70E+00 3.40E+01 TV 18 L8031-03 9n12004 Cs-134 -1.IOE+01 l.OOE+01 3.80E+01 TV 18 L8031-03 9/7/2004 Cs-137 2.50E+01 1.20E+01 3.90E+0I TV 18 L8031-03 9n72004 1-131 -1.40E+01 3.40E+01 1.20E+02 TV 18 L8031-03 9no2004 K40 2.59E+03 2.40E+02 5.1 OE+02 TV 18 L8200-03 10/4/2004 Co-58 -3.OOE+00 1.60E+01 6.30E+0O TV 18 L8200-03 10/4/2004 Co-60 4.00E+00 1.50E+01 6.20E+0O TV 18 L18200-03 10/4/2004 Cs-134 1.90E+01 1.60E+01 5.40E+01 TV 18 L8200-03 10/4/2004 Cs- 137 4.OOE+O0 I.IOE+0I 4.40E+01 TV 18 L8200-03 10/4/2004 1-131 -3.30E+01 7.80E+01 2.90E+02 TV 18 L8200-03 10/4/2004 K40 2.1OE+03 3.50E+02 7.70E+02

TV 18 L8382-03 11/1/2004 Co-58 1.00E+0I 1.20E+01 4.20E+0I TV 18 L8382-03 11/1/2004 Co-60 -I.OOE+00 1.30E+01 4.50E+0I TV 18 L8382-03 11/l/2004 Cs-134 O.OOE+00 1.IOE+01 3.80E+01 TV 18 L8382-03 11/1/2004 Cs-137 2.70E+01 1.20E+01 4.00E+01 TV 18 L8382-03 11/1/2004 1-131 9.1OE+0I 9.20E+01 3.10E+02 TV 18 L8382-03 11/1/2004 K40 2.12E+03 2.50E+02 6.20E+02 *

Radioactivity detected In sample (ie., concentration > 3 X standard deviation)

+ 1slinimum Detectable Concentration > Lower Limit of Detection Requiremcnt C-20

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (nCi/kii (nCiku) (nCifku)

BROAD LEAF VEGETATION TV 41 L7425-04 5/17/2004 Co-58 -1.71E+01 9.1 OE+00 4.OOE+01 TV 41 L7425-04 5/17/2004 Co-60 0.OOE+00 1.20E+0I 4.50E+01 TV 41 L7425-04 511712004 Cs-134 2.00EOE00 1.IOE+01 4.OOE+01 TV 41 L7425-04 5/17/2004 Cs-137 6.70E+00 9.50E+0O 3.40E+01 TV 41 L7425-04 5/17/2004 1-131 5.1 OE+00 9.70E+00 3.50E+01 TV 41 L7425-04 511712004 K-40 3.89E+03 3.50E+02 4.40E+02

TV 41 L7554-04 6/14/2004 Co-58 4.00E+00 I .90E+01 7.10E+0I TV 41 L7554-04 6/14/2004 Co-60 -2.50E+01 I .60E+01 7.80E+01 TV 41 L7554-04 6/14/2004 Cs-134 1.50E+01 1.40E+01 4.90E+01 TV 41 L7554-04 6/14/2004 Cs-137 1.70E+01 1.40E+01 5.OOE+0I TV 41 L7554-04 6/1412004 1-131 -1.29E+02 6.20E+0I 2.90E+02 TV 41 L7554-04 6/1412004 K-40 2.07E+03 3.70E+02 6.50E+02 TV 41 L7714-04 7/12/2004 Co-58 -1.50E+01 1.20E+01 5.10E+0O TV 41 L7714-04 7/12/2004 Co-60 9.00E+00 1.50E+01 5.50E+OI TV 41 L7714-04 7/12/2004 Cs-134 -1.OOE+00 1.50E+0I 5.50E+01 TV 41 L7714-04 7/12/2004 Cs-137 O.OOE+00 l.IOE+0I 4.20E+01 TV 41 L7714-04 7112/2004 1-131 -I.OOE+0I 2.50E+0I 9.80E+0I TV 41 L7714-04 7/12/2004 K40 3.01 E+03 3.80E+02 7.50E+02

TV 41 L7886-04 8/912004 Co-58 1.IOE+0I I .1 OE+0I 4.20E+0I TV 41 L7886-04 8/912004 Co-60 5.00E+00 1.90E+0I 7.20E+0I TV 41 L7886-04 8/9/2004 Cs-134 2.20E+0I 1.60E+0I 5.50E+0I TV 41 L7886-04 8/9/2004 Cs-137 -1.70E+0I 1.20E+0I 5.80E+0I TV 41 L7886-04 8/9/2004 1-131 3.20E+0I 3.10E+01 I .I OE+02 TV 41 L7886-04 8/9/2004 K40 2.44E+03 4.40E+02 9.10E+02 TV 41 L8031-04 9n72004 Co-58 1.60E+0O 1.60E+0I 5.60E+0I TV 41 L8031-04 9nn2004 Co-60 1.OOE+00 1.50E+0I 5.80E+O1 TV 41 L8031-04 9n/2004 Cs-134 -7.OOE+00 1.50E+O1 5.90E+01 TV 41 L8031-04 9n72004 Cs-137 -2.05E+0I 9.90E+00 4.50E+01 TV 41 L8031-04 9nn2004 1-131 6.30E+0I 6.70E+0I 2.30E+02 TV 41 L8031-04 9n72004 K40 3.01 E+03 3.50E+02 6.00E+02 TV 41 L8200-04 10/4/2004 Co-58 -1.50E+0I 1.20E+OI 5.10E+0I TV 41 L8200-04 10/4/2004 Co-60 0.00E+O0 1.50E+01 6.OOE+OI TV 41 L8200-04 10/4/2004 Cs-134 -I.20E+0o 1.20E+01 4.90E+O I TV 41 L8200-04 10/4n2004 Cs-137 2.00E+O0 1.OOE+01 3.80E+O1 TV 41 L8200-04 10/4/2004 1-13 I -3.00E+00 3.70E+01 1.40E+02 TV 41 L8200-04 10/4/2004 K-40 4.01 E+03 4.1 OE+02 6.30E+02

TV 41 L8382-04 111/2004 Co-58 -2.26E+0I 8.20E+OO 3.20E+01 TV 41 L8382-04 111/2004 Co-60 -1.053E+0I 7.70E+OO 3.OOE+01 TV 41 L8382-04 I1/1/2004 Cs-134 7.OOE+O0 7.60E+00 2.60E+01 TV 41 L8382-04 II/l/2004 Cs-137 1.13E+0I 6.90E+00 2.30E+0I TV 41 L8382-04 I 1//2004 1-131 -2.60E+01 6.1OE+OI 2.20E+02 3.40E+02 S TV 41 L8382-04 111/2004 K-40 2.88E+03 1.90E+02 Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement C-21

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (PCill) (pCi/) (pCi/)

ISFSI WATER WI 57 L7047-03 1/12/2004 Ba-140 -I.OOE+00 1.30E+01 4.70E+OI WI 57 L7047-03 1/12/2004 Co-58 -1.60E-01 6.90E-01 2.40E+0O WI 57 L7047-03 1/12/2004 Co-60 3.90E-01 3.90E-01 1.30E+00 WI 57 L7047-03 1/12/2004 Cs-134 4.90E-01 4.20E-0I 1.40E+00 WI 57 L7047-03 1/12/2004 Cs-137 -2.1 OE-0I 3.50E-01 1.20E+O0 WI 57 L7047-03 1/12/2004 Fe-59 -2.10E+00 2.20E+00 8.OOE+0O WI 57 L7047-03 1/1212004 H-3 3.00E+01 2.30E+02 6.80E+02 WI 57 L7047-03 1/1212004 1-131 2.20E+02 1.IOE+02 3.70E+02 WI 57 L7047-03 1/1212004 Mn-54 -5.00E-02 4.30E-01 1.50E+00 WI 57 L7047-03 1/12/2004 Zn-65 -2.60E+00 9.70E-0I 3.60E+00 WI 57 L7047-03 1/12/2004 Zr-95 2.20E+00 1.30E+00 4.30E+00 WI 57 L7182-03 4/5/2004 Ba-140 6.OOE-01 1.80E+00 7.10E+00 WI 57 L7182-03 4/5/2004 Co-58 8.00E-0 I.IOE+00 4.00E+00 WI 57 L7182-03 4/5/2004 Co-60 -5.00E-01 1.70E+00 6.80E+00 WI 57 L7182-03 4/5/2004 Cs-134 -1.80E+00 1.40E+00 5.90E+00 WI 57 L7182-03 4/5/2004 Cs-137 -6.00E-01 1.70E+00 6.20E+00 WI 57 L7182-03 4/5/2004 Fe-59 -2.90E+00 3.90E+00 1.70E+0O WI 57 L7182-03 4/5/2004 H-3 2.90E+02 3.40E+02 LI.OE+03 WI 57 L7182-03 4/5/2004 1-131 6.00E-01 2.50E+00 8.80E+00 WI 57 L7182-03 4/5/2004 Nln-54 -1.30E+00 I.IOE+00 4.60E+00 WI 57 L7182-03 4/5/2004 Zn-65 0.00E+00 2.80E+00 1.10E+0I WI 57 L7182-03 4/5/2004 Zr-95 -I.OOE-01 2.10E+00 8.30E+00 WI 57 L7641-03 6/28/2004 Ba-140 -1.50E+00 3.30E+00 1.60E+0I WI 57 L7641-03 6/28/2004 Co-58 -1.80E+00 2.00E+00 9.30E+00 WI 57 L7641-03 6/28/2004 Co-60 -1.60E+00 1.60E+00 8.80E+00 WI 57 L7641-03 6/28/2004 Cs-134 6.00E-01 2.10E+00 8.40E+00 WI 57 L7641-03 6/28/2004 Cs-137 3.50E+00 2.00E+00 6.30E+0O WI 57 L7641-03 6/28/2004 Fe-59 -4.60E+00 5.70E+00 2.80E+01 WI 57 L7641-03 6/28/2004 H-3 -8.OOE+01 3.80E+02 1.20E+03 WI 57 L7641-03 6/28/2004 1-131 0.00E+00 3.20E+00 1.30E+0I WI 57 L7641-03 6/28/2004 Mn-54 -2.70E+00 2.50E+00 1.IOE+OI WI 57 L7641-03 6/28/2004 Zn-65 -1.60E+00 3.50E+00 1.70E+0I WI 57 L7641-03 6/28/2004 Zr-95 2.40E+00 4.30E+00 1.60E+0I WI 57 L8191-03 10/4/2004 Ba-140 2.70E+00 2.70E+00 9.60E+00 WI 57 L8191-03 10/4/2004 Co 7.OOE-01 1.60E+00 5.80E+00 WI 57 L8191-03 10/4/2004 Co-60 -8.00E-0I I.SOE+00 6.40E+00 WI 57 L8191-03 10/4/2004 Cs-134 I.4OE+00 I.SOE+00 5.30E+00 WI 57 L8191-03 10/4/2004 Cs-137 1.80E+00 1.60E+00 5.60E+00 WI 57 L8191-03 10/4/2004 ic-59 I.IOE+00 3.80E+00 1.50E+0I WI 57 L8191-03 10/4/2004 H-3 3.20E+02 3.40E+02 I.IOE+03 WI 57 L8191-03 10/4/2004 1-131 3.20E+00 3.SOE+00 1.20E+0I WI 57 L8191-03 10/4/2004 Mn-54 130E+00 1.40E+00 5.OOE+OO WI 57 L8191-03 10/4/2004 Zn-65 -2.70E+00 3.80E+00 1.50E+O1 WI 57 L8191-03 10/4/2004 Zr-95 2.30E+00 2.00E+00 6.90E+00

Radioactivity detected In sample (ie., concentration > 3 X standard deviation)

+ lMinimum Detectable Concentration > Lower Limit of Detection Requirement C-22

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/W) (WCi/M) (WCi/l)

RIVER WATER WR 28 L7034-01 3/22/2004 Ba-140 8.20E+03 5.OOE+03 1.60E+04 WR 28 L7034-01 3/22/2004 Co-58 2.30E+00 4.70E+00 1.70E+01 WR 28 L7034-01 3/22/2004 Co-60 -3.OOE-01 1.20E+00 4.60E+00 WR 28 L7034-01 3/22/2004 Cs-134 7.OOE-01 1.30E+00 4.60E+00 WR 28 L7034-01 3/22/2004 Cs-137 -1.22E+00 9.40E-01 3.90E+00 WR 28 L7034-01 3/22/2004 Fe-59 I.O0E+00 2.50E+01 9.80E+01 WR 28 L7034-01 3f22v2004 H-3 -2.70E+02 4.80E+02 1.50E+03 WR 28 L7034-01 3/22/2004 1-131 2.70E+05 6.60E+05 2.30E+06 WR 28 L7034-01 3/22/2004 Mn-54 -2.40E+O0 1.50E+00 6.10E+00 WR 28 L7034-01 3/22/2004 Zn-65 -1.70E+O0 3.50E+O0 1.40E+01

VR 28 L7034-01 3/22/2004 Zr-95 -2.00E+00 1.00E+O1 3.80E+01 WR 28 L7772-01 6/28/2004 Ba-140 6.90E+01 2.60E+01 2.70E+OI WR 28 L7772-01 6/2812004 Co-58 4.10E+00 2.40E+00 7.60E+00 WR 28 L7772-01 6/28/2004 Co-60 8.OOE-01 1.90E+00 7.00E+00 WR 28 L7772-01 6/2812004 Cs-134 -1.70E+00 1.901E+00 7.60E+O0 WR 28 L7772-01 6/28/2004 Cs-137 3.00E-01 1.60E+00 5.90E+00 WR 28 L7772-01 6/28/2004 Fe-59 -1.60E+0I 1.IOE+01 4.90E+OI WR 28 L7772-01 6/2812004 H-3 -7.20E+02 4.80E+02 1.50E+03 WR 28 L7772-01 6/28/2004 1-131 0.00E+00 1.60E+02 5.80E+02 WR 28 L7772-01 6128/2004 hin-54 -2.00E-01 1.40E+00 5.70E+00 WR 28 L7772-01 6/28/2004 Zn-65 -5.30E+00 3.1OE+00 1.50E+01 WR 28 L7772-01 6128/2004 Zr-95 4.30E+00 4.70E+00 1.70E+01 WR 28 L8306-01 9/20/2004 Ba-140 -3.00E+00 1.40E+01 6.20E+01 WR 28 L8306-01 9/20/2004 Co-58 3.20E+00 2.30E+00 7.60E+00 WR 28 L8306-01 9/2012004 Co-60 1.50E+00 1.50E+O0 5.30E+00 WR 28 L8306-01 9/20/2004 Cs-134 7.00E-01 L.90E+00 7.30E+00 WR 28 L8306-01 9/20/2004 Cs-137 -L.00E+00 1.50E+00 6.20E+00 WR 28 L8306-01 9/20/2004 Fe-59 -2.30E+00 6.90E+00 3.00E+01 WR 28 L8306-01 9/20/2004 H-3 -6.30E+02 3.40E+02 1.20E+03 WR 28 L8306-01 9/20/2004 1-131 1.03E+02 5.00E+OI 1.soE+02

VR 28 L8306-01 9/20/2004 Nln-54 1.90E+00 1.90E+00 6.50E+O0 WR 28 L8306-01 9/20/2004 Zn-65 -5.OOE+00 3.30E+00 1.60E+O1 WR 28 L8306-01 9/20/2004 Zr-95 -2.50E+00 4.40E+00 1.80E+01 WR 28 L8747-01 12/28/2004 Ba-140 5.00E+00 5.80E+00 2.1OE+0I WR 28 L8747-01 12/28/2004 Co-58 -1.80E+00 1.30E+00 S.20E+00 WR 28 L8747-01 12/28/2004 Co-60 -4.00E-01 8.20E-01 3.40E+00 WR 28 L8747-01 12/28/2004 Cs-134 7.OOE-01 1.00E+00 3.60E+00 WR 28 L8747-01 12/28/2004 Cs-137 -1.72E+00 9.30E-01 3.80E+00 WR 28 L8747-01 12/28/2004 Fc-59 1.20E+00 4.70E+00 1.70E+01 WR 28 L8747-01 12/28/2004 H-3 -3.00E+01 3.30E+02 1.IOE+03 WR 28 L8747-01 12/28/2004 1-131 -3.00E+00 1.50E+01 5.20E+01 WR 28 L8747-01 12/28/2004 Mn-54 -1.40E+00 L.00E+00 4.10E+00 WR 28 L8747-01 12/28/2004 Zn-65 -2.10E+00 2.20E+00 8.70E+00 WR 28 L8747-01 12/28/2004 Zr-95 -1.00E+O0 2.40E+O0 8.80E+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit or Detection Requirement C-23

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCiGA) (pCil/) (pCi/W )

RIVER WATER WR 30 L7034-02 3/22/2004 Ba-140 -4.90E+03 4.30E+03 I.90E+04 WR 30 L7034-02 3/22/2004 Co-58 -1.50E+00 4.60E+00 1.70E+01 WR 30 L7034-02 3/22/2004 Co-60 -1.90E+00 1.IOE+00 4.90E+00 WR 30 L7034-02 3/22/2004 Cs-134 -1.70E+00 1.40E+00 5.70E+00 WR 30 L7034-02 3/22/2004 Cs-137 -1.50E+00 1.IOE+00 4.40E+00 WR 30 L7034-02 3/22/2004 Fe-59 -6.00E+O0 i.20E+01 9.10E+OI WR 30 L7034-02 3/22/2004 11-3 -2.00E+02 4.80E+02 1.50E+03 WR 30 L7034-02 3/22/2004 1-131 -3.40E+05 6.30E+05 2.30E+06 WR 30 L7034-02 3/22/2004 Mn-54 -5.OOE-01 1.40E+00 5.30E+00 WR 30 L7034-02 3/22/2004 Zn-65 5.30E+00 7.20E+00 2.50E+0O WR 30 L7034-02 3/22/2004 Zr-95 -1.02E+01 9.40E+00 3.70E+0O WR 30 L7772-02 6/28/2004 Ba-140 1.40E+01 2.80E+0I I.IOE+02 WR 30 L7772-02 6/28/2004 Co-58 -I.OOE-0O 2.40E+00 9.40E+00 WR 30 L7772-02 6/28/2004 Co-60 1.80E-fOO 1.90E+00 6.80E+00 WR 30 L7772-02 6/28/2004 Cs-134 1.50E+00 1.80E+00 6.50E+00 WR 30 L7772-02 6/28/2004 Cs-137 3.OOE-01 1.50E+00 5.60E+O0 WR 30 L7772-02 6/28/2004 Fe-59 -1.34E+01 9.60E+00 4.40E+OI WR 30 L7772-02 6/28/2004 H-3 -1.70E+02 4.80E+02 1.50E+03 WR 30 L7772-02 6/28/2004 1-131 -1.30E+02 1.70E+02 6.50E+02 WR 30 L7772-02 6/28/2004 Nin-54 -2.30E+00 1.90E+00 7.80E+00 WR 30 L7772-02 6/2812004 Zn-65 -2.90E+00 4.10E+00 1.70E+O1 WR 30 L7772-02 6/28/2004 Zr-95 2.OOE-01 5.40E+00 2.OOE+OI WR 30 L8306-02 9/20/2004 Ba-140 -2.OOE+01 1.70E+01 7.80E+0I WR 30 L8306-02 9/20/2004 Co-58 -3.70E+00 2.70E+O0 I.IOE+OI WR 30 L8306-02 9/20/2004 Co-60 6.00E-0I I.90E+00 7AOE+O0 WR 30 L8306-02 9/20/2004 Cs-134 -8.OOE-01 1.50E+00 6.30E+O0 WR 30 L8306-02 9/20/2004 Cs-137 6.OOE-01 1.40E+00 5.20E+00 WR 30 L8306-02 9/20/2004 Fe-59 2.10E+00 6.90E+00 2.70E3+OI WR 30 L8306-02 9/20/2004 H-3 1.90E+02 3.40E+02 1.IOE+03 WR 30 L8306-02 9/20/2004 1-131 -5.00E+00 4.10E+0I 1.60E+02 WR 30 L8306-02 9120/2004 Mn-54 -7.00E-01 1.80E+00 7.10E+00 WR 30 L8306-02 9120/2004 Zn-65 5.50E+00 4.10E+00 I.IOE+01 WR 30 L8306-02 9/20/2004 Zr-95 -5.70E+00 4.90E+00 2.00E+0I WR 30 L8747-02 12/28/2004 Ba-140 1.20E+01 I.IOE+0I 3.80E+0I WR 30 L8747-02 12/28/2004 Co-58 -1.60E+00 2.OOE+00 8.60E+00 WR 30 L8747-02 12/28/2004 Co-60 2.60E+00 2.00E+00 6.50E+O0 WR 30 L8747-02 12128/2004 Cs-134 4.OOE-0I I.90E+00 7.30E+O0 WR 30 L8747-02 12/28/2004 Cs-137 -1.70E+00 2.00E+00 8.OOE+00 WR 30 L8747-02 12/28/2004 Fe-59 4.30E+00 7.40E+00 2.80E+0 I WR 30 L8747-02 12/28/2004 11-3 -3.10E+02 3.20E+02 I.IOE+03 WR 30 L8747-02 12/28/2004 1-131 1.OOE+00 2.40E+01 9. 1OE+OI WR 30 L8747-02 12/28/2004 Mn-54 -1.40E+00 1.80E+00 7.50E+00 WR 30 L8747-02 12/28/2004 Zn-65 -2.10E+00 3.90E+00 1.70E+01 WR 30 L8747-02 12/28/2004 Zr-95 -1.40E+00 4.20E+00 1.70E+0I

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement C-24

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/) (VCi/) (nCiAi)

WELL WATER

%Ww 15 L7047-01 1/1212004 Ba-140 I .IOE+01 I .50E+01 5.20E+0I WW 15 L7047-01 1/1212004 Co-58 4.00E-02 6.30E-0I 2.20E+00 ww 15 L7047-01 1/1212004 Co-60 -4.30E-0I 4.40E-0I I .60E+00

%VW 15 L7047-01 1112/2004 Cs-134 2.30E-0 I 4.30E-01 1.501E+00 VWw 15 L7047-01 111212004 Cs-137 -2.70E-01 4.1 OE-0I I .40E+00 WW 15 L7047-01 111212004 Fe-59 -4.00E-01 2.80E+00 9.80E+00 ww IS L7047-01 1112/2004 11-3 8.00E+01 2.30E+02 6.80E+02 wv 15 L7047-01 111212004 1-131 9.00E+01 1.20E+02 3.90E+02 WW 15 L7047-01 1112/2004 Mn-54 4.40E-01 4.50E-01 I .50E+00 WWV 15 L7047-01 111212004 Zn-65 -1.33E+00 9.90E-01 3.60E+00 WWV 15 L7047-01 111212004 Zr-95 6.00E-OI 1.20E+00 4.20E+00 WW IS L7182-01 4/512004 Ba-140 -6.30E+00 2.80E+00 1.50IE+0I ww 15 L7182-01 4/512004 Co-58 -1.1 OE+00 I .40E+00 5.80E+00 WWv 15 L7182-01 4/512004 Co-60 1.1 OE+00 2.1OE+00 7.60E+00 WW 15 L7182-01 4/512004 Cs-134 l.OOE+00 I .60E+00 5.90E+00 ww 15 L7182-01 4/512004 Cs-137 -5.00E-01 1.30E+00 5.20E+00 WW 15 L7182-01 4/512004 Fe-59 3.40E+00 4.30E+00 1.60E+0I wW 15 L7182-01 4/5/2004 H-3 -7.70E+02 4.20E+02 1.SOE+03 ww 15 L7182-01 4/512004 1-131 2.30E+00 3.90E+00 I AOE+O I WWv 15 L7182-01 415/2004 Mn-54 -5.00E-0I I.40E+00 5.30E+00 WW 15 L7182-01 4/5/2004 Zn-65 2. 10E+00 3.20E+00 1.20E+0O WWV 15 L7182-01 4/512004 Zr-95 -3.00E+00 3.20E+00 1.30E+0I WV 15 L7641 -01 612812004 Ba-140 5.40E+00 3.30E+00 1.00E+0I WV 15 L7641-01 6/28/2004 Co-58 3.00E-0I I .70E+00 7.00E+00 WW 15 L7641-01 6/28/2004 Co-60 3.70E+00 2.50E+00 8.00E+00 ww 15 L7641-01 6/28/2004 Cs-134 -3.80E+00 2.40E+00 1.1 OE+0I WW 15 L7641-01 6/28/2004 Cs-137 O.OOE+00 2.00E+00 B.IOE+00 VWW 15 L7641-01 6/28/2004 Fe-59 -4.20E+00 5.20E+00 2.50E+01 ww 15 L7641-01 6/2812004 H-3 4.40E+02 3.80E+02 I .20E+03 WW 15 L7641-01 6/28/2004 1-131 8.70E+00 3.60E+00 I .IOE+0I WW 15 L7641-01 6/28/2004 Mn-54 -2.00E-0I 2.50E+00 9.90E+00 WW 15 L7641-01 6/28/2004 Zn-65 -2.90E+00 5.70E+00 2.40E+01 WW 15 L7641-01 6/28/2004 Zr-95 3.OOE-0 I 3.30E+00 I .30E+0O WW 15 L819 11-01 1014/2004 Ba-140 -I.001E+00 1.80E+00 9.40E+00 WW lS L8191 -01 10/4/2004 Co-58 -1.40E+00 I .80E+00 7.60E+00 WW 15 L8191-01 10/4/2004 Co-60 -4.00E-0I 2.00E+00 8.20E+00 WW 15 L819 -01 10/4/2004 Cs-134 3.20E+00 2.1 OE+00 6.80E+00 WW 15 L819 I-01 10/4/2004 Cs-137 1.30E+00 2.00E+00 7.00E+00 WW 15 L819 I-01 10/4/2004 Fe-59 -2.60E+00 5.30E+00 2.20E+0I WW 15 LS 19 1-01 10/4/2004 11-3 3.00E+02 3.30E+02 1.I1OE+03 ww 15 L8191-01 10o4/2004 1-131 -9.00E+00 4.50E+00 I .80E+0I WW 15 LB 191-01 10/4/2004 Mn-54 -2.80E+00 2.00E+00 8.50E+00 ww 15 L8191-01 10/4/2004 Zn-65 -5.90E+00 4.20E+00 I .90E+01 WW 15 LS 191-01 10/412004 Zr-95 7.20E+00 3.40E+00 I .00E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Mlinimum Detectable Concentration > Lower Limit of Detection Requirement C-25

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2004 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCWi) (pCiO) (pCiA)

WELL WATER WW 16 L7182-02 415/2004 Ba-140 3.001E0O I.90E+00 6.80E+00 WW 16 L7182-02 4/1/2004 Co-58 -9.OOE-01 1.40E+00 5.20E+00 WW 16 L7182-02 415/2004 Co-60 5.OOE-01 1.40E+O0 5.00E+00 WW 16 L7182-02 4/1/2004 Cs-134 -1.OOE+00 1.30E+00 4.80E+00 WW 16 L7182-02 4/5/2004 Cs-137 -1.50E+00 1.20E+00 4.40E+00 WW 16 L7182-02 4/5/2004 Fe-59 l.OOE+00 3.90E+00 1.40E+0O WW 16 L7182-02 4/5/2004 H-3 -3.30E+02 3.30E+02 I.IOE+03 WW 16 L7182-02 4/5/2004 1-131 -1.80E+00 2.20E+00 7.70E+00 WW 16 L7182-02 4/5/2004 Mn-54 1.00E-0I 1.40E+00 4.80E+00

WW 16 L7182-02 4/5/2004 Zn-65 1.02E+01 6.60E+00 2.20E+0I WW 16 L7182-02 4/5/2004 Zr-95 -1.OOE-0I 2.30E+00 8.20E+00 WW 16 L7641-02 6/28/2004 Ba-140 -8.00E-01 2.40E+00 9.1OE+00 WW 16 L7641-02 6/28/2004 Co-58 -2.70E+00 1.60E+00 6.30E+00 WW 16 L7641-02 6/28/20(4 Co-60 -1.40E+00 1.70E+00 6.50E+00 WW 16 L7641402 6/28/2004 Cs-134 -7.00E-01 1.60E+00 6.00E+OO WW 16 L7641-02 6/28/2004 Cs-137 -2.40E+00 1.40E+00 5.60E+00 WW 16 L7641-02 6/28/2004 Fe-59 -2.IOE+00 3.40E+00 1.40E+0I WW 16 L7641-02 6/28/2004 H-3 3.00E+01 3.70E+02 1.20E+03 WW 16 L7641-02 6/28/2004 1-131 2.50E+00 3.OOE+00 I.OOE+0I WW 16 L7641-02 6/28/2004 Mn-54 O.OOE+00 1.40E+00 5.20E+00 WWV 16 L7641-02 6/28/2004 Zn-65 I.15E+0I 6.70E+00 2.20E+01 WWV 16 L7641-02 6/28/2004 Zr-95 -5.70E+00 2.70E+00 I.IOE+OI WW 16 Ls 191-02 1014/2004 Ba-140 -6.40E+00 4.90E+00 2.20E+0I WW 16 L8191-02 1014/2004 Co-58 , -1.60E+00 2.80E+00 I.IOE+0I

'W 16 L8191-02 10/4/2004 Co-60 -2.60E+00 2.00E+00 9.60E+00 WW 16 L8191-02 10/4/2004 Cs-134 -7.00E-01 3.20E+00 1.20E+01 WW 16 L8191-02 10/4/2004 Cs-137 2.80E+00 2.60E+00 9.OOE+00 WW 16 L8191-02 10/4/2004 Fe-59 -1.31E+01 8.20E+00 3.60E+0I WW 16 L8191-02 10/4/2004 11-3 9.00E+01 3.30E+02 I.IOE+03 WW 16 L8191-02 1014/2004 1-131 -8.80E+00 5.30E+00 2.10E+01 WW 16 L8191-02 10/4/2004 Mn-54 -2.40E+00 2.50E+00 I.OOE+0I WW 16 L8191-02 1014/2004 Zn-65 -8.70E+00 4.80E+00 2.20E+0I WW 16 L8191-02 10/4/2004 Zr-95 -3.00E+00 5.00E+00 2.00E+OI

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit or Detection Requirement C-26

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 APPENDIX D Summary of Unreported 2003 REMP Data D-1

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2003 Data SAMPLE END CONC STD.DEV. MDC TYPE S9TATION

. . ^ .....

T LN DATE NUCLIDE (nCim3)

(vCi/m3)

(oCi/m3)

AIR PARTICULATE AP 5 L6596-01 12/1/2003 GROSS BETA 2.67E-02 1.50E-03 3.20E-03

AP 6 L6596-02 121/2003 GROSS BETA 2.39E-02 1.40E-03 3.20E-03

AP 7 L6596-03 12/1/2003 GROSS BETA 2.60E-02 1.40E-03 3.00E-03

AP 9 L6596-04 12/1/2003 GROSS BETA 2.77E-02 I .70E-03 3.90E-03

AP 13 L6596-05 12/1/2003 GROSS BETA 2.66E-02 I .50E-03 3.30E-03 *

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement D-2

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2003 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLTDE (pCi/kc) (nCi/k) (rCi/k)

FISH FH 29 L755I-01 6/9/2003 Ag-lOrm -1.80E+01 3.70E+O L.501E+02 FH 29 L7551-o0 619/2003 Ba-140 -3.60E+10 2.30E+10 I.1OE+13 FH 29 L7551-01 6/9/2003 Be-7 -8.OOE+03 1.20E+04 4.70E+04 FH 29 L7551-01 6/9/2003 Ce-141 -1.30E+04 4.20E+04 1.60E+05 FH 29 L7551-01 6/9/2003 Ce-144 1.30E+02 1.30E+02 4.40E+02 FH 29 L7551-01 6/9/2003 Co-57 3.00E+00 1.60E+01 5.60E+01 FH 29 L7551-01 6/9/2003 Co-58 9.OOE+01 5.OOE+02 1.90E+03 FH 29 L7551-01 6/9/2003 Co-60 4.OOE+00 1.20E+01 4.50E+O1 FH 29 L7551-01 6/9/2003 Cs-134 -1.20E+01 I.50E+0I 6.20E+01 FH 29 L7551-01 619/2003 Cs-137 1.70E+01 1.30E+01 4.40E+01 FH 29 L7551 -O 6/9/2003 Fe-59 1.00E+03 L.IOE+04 4.50E+04 FH 29 L7551-01 6/9/2003 1-131 5.90E+15 4.60E+15 1.50E+16 FH 29 L7551-01 6/9/2003 K-40 2.29E+03 3.20E-+02 6.40E+02

FH 29 L755 -01 6/9/2003 Mn-54 -3.IOE+01 2.30E1+01 9.90E+0 I FH 29 L7551-01 6/9/2003 Ru-103 9.70E+03 8.60E+03 2.90E+04 FH 29 L7551-01 6/9/2003 Ru-106 3.60E+02 1.80E+02 5.60E4+02 FH 29 L755 1-01 6/9/2003 Sb-124 7.00E+02 1.90E+03 7.70E+03 FH 29 L7551-01 6/9/2003 Zn-65 1.60E+01 5.80E+01 2.30E+02 FH 29 L755 1-01 6/9/2003 Zr-95 -4.40E+02 9.70E+02 4.00E+03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement D-3

Haddam Neck Station Annual Radiological Environmental Operating Report 2004 Connecticut Yankee Radiological Environmental Monitoring Program Summary of 2003 Data SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

BROAD LEAF VEGETATION TV 6 L6447-01 1113/2003 Co-58 2.00E+01 1.50E+01 4.90E+01 TV 6 L6447-01 1113/2003 Co-60 6.00E+00 1.10E+01 4.20E+01 TV 6 L6447-01 11/312003 Cs-134 1.80E+01 1.40E+01 4.60E+01 TV 6 L6447-01 11/3/2003 Cs-137 -9.OOE+00 1.00E+01 4.20E+01 TV 6 L6447-01 11/3/2003 1-131 3.10E+01 8.40E+01 3.10E+02 TV 6 L6447-01 11/3/2003 K.40 1.84E+03 2.90E+02 5.40E+02 TV 13 L6447.02 11/3/2003 Co-58 1.30E+01 1.70E+01 6.00E+01 TV 13 L6447-02 11/3/2003 Co-60 1.70E+01 1.40E+01 4.90E+01 TV 13 L6447-02 11/3/2003 Cs-134 2.00E+00 1.70E+01 5.90E+01 TV 13 L6447-02 11/3/2003 Cs-137 -1.60E+01 1.50E+01 5.70E+01 TV 13 L6447-02 1113/2003 1-131 1.30E+02 1.50E+02 5.00E+02 TV 13 L6447-02 1113/2003 K-40 3.14E+03 3.30E+02 6.60E+02 TV 18 L6447-03 11/3/2003 Co-58 5.00E+00 1.90E+01 6.80E+01 TV 18 L6447-03 11/3/2003 Co-60 -3.00E+00 1.60E+01 6.20E+01 TV 18 L6447-03 11/3/2003 Cs-134 1.70E+01 1.60E+01 5.60E+01 TV 18 L6447-03 11/3/2003 Cs-137 1.30E+01 1.60E+01 5.50E+01 TV 18 L6447-03 11/3/2003 1-131 1.70E+02 1.50E+02 5.00E+02 TV 18 L6447-03 11/3/2003 K-40 2.70E+03 3.40E+02 7.00E+02 TV 41 L6447-04 11/3/2003 Co-58 8.OOE+00 1.30E+01 4.60E+01 TV 41 L6447-04 11/3/2003 Co-60 1.30E+01 1.00E+01 3.40E+01 TV 41 L6447-04 11/3/2003 Cs-134 -4.00E+00 1.20E+01 4.80E+01 TV 41 L6447-04 11/3/2003 Cs-137 2.40E+01 1.10E+01 3.20E+01 TV 41 L6447-04 11/3/2003 1-131 2.70E+01 7.60E+01 2.80E+02 TV 41 L6447-04 11/3/2003 K-40 2.03E+03 3.00E+02 5.60E+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement D-4

CY-05-116, Annual Radiological Environmental Operating Report for 2004

Contents

Text

Enclosure:

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2.0 INTRODUCTION

2.5 DESCRIPTION

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CY-05-116, Annual Radiological Environmental Operating Report for 2004

Text

Enclosure:

SUMMARY

2.0 INTRODUCTION

2.5 DESCRIPTION

SUMMARY

SUMMARY

2.0 INTRODUCTION

SUMMARY

SUMMARY

Subject:

SUMMARY

Navigation menu

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