ML051360081

Confirmatory Survey Results for Class 3 Open Land Areas Outside the RCA, Yankee Nuclear Power Station, Rowe, Massachusetts (Docket No. 50-29; Rfta No.04-007)

ML051360081
Person / Time
Site:	Yankee Rowe
Issue date:	02/16/2005
From:	Adams W Oak Ridge Institute for Science & Education
To:	John Hickman NRC/NMSS/DWM
References
RFTA 04-007
Download: ML051360081 (10)

Text

Yli O R I S E O A K R I D G E INSTITUTE F O R S C I E N C E AND E D U C A T I O N February 16, 2005 Mr. John Hickman Mail Stop: 7F27 Division of Waste Management U.S. Nuclear Regulatory Commission Two White Flint North 11545 Rockville Pike Rock\llle. blD 20852-2738

SUBJECT:

CONFIRMATORY SURVEY RESULTS FOR CLASS 3 OPES LAYD AREAS OUTSIDE THE RCA, YANKEE NUCLEAR POWER STATION, RO\\'E, MASSACHUSETTS [DOCKET NO. 50-29; RFTA NO. 04-007]

Dear Mr. Hickman:

The Environmental Survey and Site Assessment Program (ESSAP) of the Oak Ridge Institute for Science and Education (ORISE) performed confimiatory survey activities of some of the Class 3 Open Land Areas at the Yankee Nuclear Power Station (YXPS) Plant in Rowe, Massachusetts on Ko\.ember 17, 2004. These survey activities were requested by the licensee and approved by the NRC site representative while ESSAP was on site performing other activities. A fomial confimiatory survey plan was not provided to the NRC for these confirmatory activities; instead, a plan used previously at the Connecticut Yankee site was used as the basis for the Open Land Areas Outside the RCA (OOL) survey activities at Yankee Rowe. The survey activities included gamma surface scans and soil sampling. Enclosed are the results documenting those survey activities.

If you have any questions or comments. please direct them to me at (865) 576-0065 or Timothy J.

Vitkus at (865) 576-5073.

Wade C. Adams Health Physicist/Project Leader Enviroiimental Survey and Site Assessment Program c

Lt' A :k lp E nc 10sures Distribution approval and concurrence: Initials /

Technical Management Team Member Laboratory Manager -

Quality Manager c1 P 0 BOX 1 17, OAK RIDGE, TENNESSEE 3783 1-0117 Managed and operated by Oak Ridge Associated Universities for the US Department of Energy

CONFIRMATORY SURVEY RESULTS FOR CLASS 3 OPEN LAND AREAS YANKEE NUCLEAR POWER STATION ROWE, MASSACHUSETTS INTRODUCTION The U.S. Nuclear Regulatory Commissions (NRC) Headquarters and Region I Offices requested that the Oak Ridge Institute for Science and Educations (ORISE) Environmental and Survey Site Assessment Program (ESSAP) perform confirmatory surveys of the Class 3 surface soil survey units (SU) in the Open Land Areas Outside the RCA (OOL) of the Yankee Nuclear Power Station (YNPS) in Rowe, Massachusetts (Figure 1). Class 3 SUs included OOL-05, OOL-08, and OOL-15. Background surface soil samples were collected from the on-site Reference Area. SU OOL-05 is located along the west boundary of the Restricted Area; SU OOL-08 stretches from the western portion of the site, along the fence perimeter towards the south, and then east of the site; SU OOL-15 is north of the site; and the Reference Area is located towards the east. The confirmatory surveys of these SUs were performed on November 17, 2004.

PROCEDURES A formal site-specific survey plan was not prepared for these survey activities. While on site performing other confirmatory activities, the licensee requested that ESSAP perform confirmatory surveys of the available Class 3 SUs. After receiving approval from the NRC site representative, ESSAP agreed to this request. The confirmatory surveys were performed in accordance with a survey plan that had been submitted to and approved by the NRC for the Open Land Areas at the Connecticut Yankee site in Haddam Neck, Connecticut (ORISE 2003), and the ORISE/ESSAP Survey Procedures and Quality Assurance Manuals (ORISE 2004a and b).

Applicable procedures were documented in the site log book.

Gamma surface scans were performed over five percent of accessible portions of the survey units using NaI scintillation detectors coupled to ratemeters with audible indicators-some areas were inaccessible due to standing water or access restricted due to safety concerns. Five surface soil samples (0-15 cm) were collected from SU OOL-05 (Figure 2), five surface soil samples were collected from SU OOL-08 (Figure 3), four surface soil samples were collected from SU OOL-15 (Figure 4), and three surface soil samples were collected from the Reference Area (Figure 5).

SAMPLE ANALYSIS AND DATA INTERPRETATION Samples and data were returned to ESSAPs laboratory in Oak Ridge, TN for analysis and interpretation. Soil samples were analyzed by gamma spectroscopy for the primary gamma emitting radionuclide of concern Cs-137-the data were also reviewed for other fission and activation products, e.g. CO-60. Sample analyses were performed in accordance with the ESSAP Laboratory Procedures Manual (ORISE 2004~).Radionuclide concentrations were reported in picocuries per gram @Ci/g).

YNPS Survey Units OOL-05.08, and 15 projects/1621/2005-02-16 Land Area Results.doc

FINDINGS AND RESULTS Gamma surface scans identified several locations of elevated direct gamma radiation within the SUs, but the elevated readings were determined to be due to natural granite formations.

Concentrations of radionuclides in soil samples collected from these SUs are provided in Table 1. Backg-ound concentrations of CO-60 and Cs-137 from the Reference Area ranged from

-0.0 1 to 0.02 pCi/g and 0.28 to 1.69 pCi/g, respectively. Concentrations of CO-60 ranged from

-0.02 to 0.02 pCi/g in SU OOL-05, from -0.01 to 0.01 pCi/g in SU OOL-OS, and from -0.02 to 0.00 pCi/g in SU OOL-15. Concentrations of Cs-137 ranged from -0.01 to 0.74 pCi/g in SU OOL-05, from 0.08 to 1.71 pCi/g in SU OOL-08, and from 0.03 to 0.33 pCi/g i n SU OOL-15. A review of other gamma-emitting radionuclide concentrations did not note any significant findings. These results were not compared to site-specific guidelines since the license termination plan (LTP) for the Yankee Rowe site has not been finalized by the licensee and/or approved by the NRC.

YNPS Survey Units OOL-05,08, and 15 projects/1621/2005-02-I6Open Land Area Resultsdoc 2

16.21-020 ( 1)

\ OOL-06 r

WATER NOT TO SCALE I

FIGURE 1: Plot Plan of Open Land Area at Yankee Atomic Power Company - Rowe, Massachusetts YNPS Survey Units OOL-05, OS, and 15 3 Open Land Area Results.doc projects/l621/2005-02-16

-~ ~-

1421421 (1) m 3 SAMPLING LOCATIONS 1 SURFACE SOIL r

NOT TO SCALE FIGURE 2: Survey Unit OOL-05 Unit 1 - Soil Sampling Locations YNPS Survey Units OOL-05,08, and 15 4 projects/1621/2005-02-16 Open Land Area Resultsdoc

1621-022 (1)

\

SAMPLING LOCATIONS m#SURFACE SOIL NOT TO SCALE FIGURE 3: Survey Unit OOL-08Unit 1 - Soil Sampling Locations YNPS Survey Units OOL-O5,08, and 15 5 projects/l621/2005-02-16Open Land Area Results.doc

~ ~.

1621-023 (1)

SAMPLING LOCATIONS

1. . SURFACE SOIL NOT TO SCALE FIGURE 4: Survey Unit OOL Soil Sampling Locations YNPS Survey Units OOL-05, OS, and 15 6 projects/1621/2005-02-16 Open Land Area Results.doc

SAMPLING LOCATIONS H#SURFACE SOIL NOT TO SCALE FIGURE 5 : Background Reference Area - Soil Sampling Locations YNPS Survey Units OOL-05,08, and 15 7 projectsi162112005-02-16Open Land Area Results.doc

TABLE 1 CO-60AND Cs-137 CONCENTRATIONS IN SURFACE SOIL DETERMINED BY GAMMA SPECTROSCOPY SURVEY UNITS OOL-O5,08,15 AND REFERENCE AREA YANKEE NUCLEAR POWER STATION ROWE, MASSACHUSETTS 1 Sample Location' Radionuclide Concentration (pCi/g)

CO-60 CS-137 Survey Unit OOL-05 1 1 -0.02 f 0.03b 0.68 k 0.08

-3 0.01 f 0.03

• 0.74 0.07 3 0.02 f 0.03

• 0.17 0.03 4 0.01 f 0.02

• 0.06 0.03 5 0.02 f 0.03 -0.01 f 0.02 1 Survey Unit OOL-08 10 -0.01 f 0.03 0.94 f 0.09 11 0.00 f 0.03 0.08 f 0.03 12 -0.01 f 0.03

• 0.77 0.07 1 1

16 0.01 f 0.03 17 -0.01 f 0.04 0.15 k 0.06 It I/

6 -0.01 f 0.03 0.33 f 0.04 7 0.00 f 0.02

• 0.03 0.02 8 -0.02 f 0.03 0.08 f 0.03 9 0.00 f 0.02 0.06 f 0.02 1

Reference Area 13 0.02 f 0.04 0.62 2 0.08 14 -0.01 f 0.03 1.69 f 0.12 1 15 -0.01 f 0.04 0.25 f 0.04 1 YNPS Survey Units OOL-05.08, and 15 proJects/1621/200j-0?-Ib Open Land Area Resultsdoc 8

REFERENCES Oak Ridge Institute for Science and Education (ORISE). Proposed Confirmatory Survey Plan for the Open Land Area Survey Units, Connecticut Yankee Decommissioning Project, Haddam, Connecticut (Docket No. 50-02 13; RFTA No.03-008). Oak Ridge, TN; September 22, 2003.

Oak Ridge Institute for Science and Education. Survey Procedures Manual for the Environmental Survey and Site Assessment Program. Oak Ridge, TN; September 2,2004a.

Oak Ridge Institute for Science and Education. Quality Assurance Manual for the Environmental Survey and Site Assessment Program. Oak Ridge, TN; August 3 1, 2004b.

Oak Ridge Institute for Science and Education. Laboratory Procedures Manual for the Environmental Survey and Site Assessment Program. Oak Ridge, TN; August 3 1, 2004c.

YNPS Survey Units OOL-05,08, and 15 projectsll62112005-02-16 Open Land Area Results.doc 9