ML24122C652
| ML24122C652 | |
| Person / Time | |
|---|---|
| Site: | Surry, 07200002, 07200055  |
| Issue date: | 04/30/2024 |
| From: | Grady C Virginia Electric & Power Co (VEPCO) |
| To: | Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| 24-165 | |
| Download: ML24122C652 (1) | |
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Serial No.24-165 Docket Nos.: 50-280 50-281 72-2 72-55 ATTACHMENT 1 2023 Annual Radiological Environmental Operating Report SURRY POWER STATION UNITS 1 AND 2 VIRGINIA ELECTRIC AND POWER COMPANY
Dominion Energy Surry Power Station Radiological Environmental Monitoring Program January 1, to December 31,
Table of Contents PREFACE............................................................................................................................. 4
- 1. EXECUTIVE
SUMMARY
.................................................................................................. 5
- 2. PROGRAM DESCRIPTION............................................................................................. 7 2.1 Introduction............................................................................................................. 7 2.2 Sampling and Analysis Program............................................................................. 8
- 3. ANALYTICAL RESULTS................................................................................................ 20 3.1 Summary of Results.............................................................................................. 20 3.2 Analytical Results of 202 REMP Samples........................................................... 2
4.
DISCUSSION OF RESULTS....................................................................................... 4
4.1 Gamma Exposure Rate.........................................................................................
4.2 Airborne Gross Beta..............................................................................................
4.3 Airborne Radioiodine............................................................................................. 5
4.4 Air Particulate Gamma.......................................................................................... 5
4.5 Animal Milk............................................................................................................ 5
4.6 Food Products....................................................................................................... 5
4.7 Well Water............................................................................................................. 5
4.8 River Water........................................................................................................... 5
4.9 Silt......................................................................................................................... 5
4.10 Shoreline Sediment............................................................................................. 5
4.11 Fish..................................................................................................................... 5
4.12 Oysters................................................................................................................ 5
4.13 Clams.................................................................................................................. 5
4.14 Crabs.................................................................................................................. 5
- 5. PROGRAM EXCEPTIONS............................................................................................. 5
- 6. CONCLUSIONS............................................................................................................. 5
REFERENCES....................................................................................................................
APPENDICES..................................................................................................................... 6
APPENDIX A: LAND USE CENSUS.............................................................................. 6
APPENDIX B:
SUMMARY
OF INTERLABORATORY COMPARISONS........................ 6
3
PREFACE This report is submitted as required by Technical Specification 6.6.B.2, Annual Radiological Environment Operating Report, for Surry, Units 1 and 2, Virginia Electric and Power Company Docket Nos. 50-280 and 50-281, and the Surry Independent Spent Fuel Storage Installation (ISFSI) Technical Specifications, Appendix C, Item 1.3.1.
4
1. EXECUTIVE
SUMMARY
This document is a detailed report of the Surry Power Station Radiological Environmental Monitoring Program (REMP). Radioactivity levels from January 1 through December 31,in air, water, silt, shoreline sediment, milk, aquatic biota, food products and direct exposure pathways have been analyzed, evaluated, and summarized. The REMP is designed to confirm that radiological effluent releases are As Low As (is) Reasonably Achievable (ALARA), no undue environmental effects occur, and the health and safety of the public are protected. The program also detects any unexpected environmental processes that could allow radiation accumulations in the environment or food pathway chains.
Radiation and radioactivity in the environment are monitored within a 20-mile radius of the station. Surry Power Station personnel collect a variety of samples within this area.
Several sampling locations for each medium are selected using available meteorological, land use, and water use data. Two types of samples are obtained. The first type, control samples, is collected from areas that are beyond the measurable influence of Surry Power Station or any other nuclear facility. These samples represent normal background radiation levels. Background radiation levels can be compared to the environment surrounding the station. Indicator samples are the second sample type obtained. These samples show how much radiation is contributed to the environment by the station.
Prior to station operation, samples were collected and analyzed to determine the amount of radioactivity present in the area. The resulting values are used as a "pre-operational baseline. Analysis results from the indicator samples are compared to control sample values and the pre-operational baseline to determine if changes in radioactivity levels are attributable to station operations, or natural variation, or other causes such as the Chernobyl and Fukushima Daiichi accidents that released radioactive material to the environment.
Teledyne Brown Engineering, Inc. (TBE) provides radioanalyses for this program and Mirion Technologies provideV
thermoluminescent dosimetry
(TLD) services.
Participation in an Interlaboratory Comparison Program provides an independent check of sample measurement precision and accuracy. Typically, radioactivity levels in the environment are so low that analysis values frequently fall below the minimum detection limits of state-of-the-art measurement methods. Because of this, the United States Nuclear Regulatory Commission (USNRC) requires that equipment used for radiological environmental monitoring must be able to detect specified minimum Lower Limits of Detection (LLDs). This ensures that analyses are as accurate as possible.
The USNRC also mandates a reporting level for radionuclides. Licensed nuclear facilities must report the radionuclide activities in those environmental samples that are equal to or greater than the specified reporting level. Environmental radiation levels are sometimes referred to as a percent of the reporting level.
5
Analytical results are reported for all possible radiation exposure pathways to man. These pathways include airborne, aquatic, terrestrial and direct radiation exposure. The airborne exposure pathway includes radioactive airborne iodine and particulates. The
airborne results were comparable to previous years. No station related radioactivity was detected
1atural
radioactivity
levels
DUH
consistent
with
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Aquaticexposure
pathway samples include well and river
- water, silt and shoreline sediments, crabs,
- fish, clams, and oysters.
Naturally occurring radionuclides such as beryllium-7, potassium-40, radium-226, actinium-228, thorium-228, and thorium-232 were detected at average environmental levels.
No man-made radionuclides were detected in well water. This trend is consistent throughout the operational environmental monitoring program.
No man-made radionuclides were detected in river water DQG Vilt SDWKZD\\V Naturally occurring beryllium-7, potassium-40, radium-226, actinium-228, thorium-228, and thorium-232 were detected
at average environmental levels. Shoreline sediment, which may provide a direct exposure pathway, contained no station related radionuclides. Naturally occurring potassium-40, thorium-228, and thorium-232 were detected at average environmental levels.
The terrestrial exposure pathway includes milk and food products. Iodine-131 was not detected in any milk samples,RGLQH has not been detected in milk prior to or since the 1986
Chernobyl
accident. Strontium-90 was detected in milk
VDPSOHV DQG UHPDLQV FRPSDUDEOH WR KLVWRULFDO OHYHOV 6WURQWLXP LV attributable to
atmospheric nuclear weapons testing. No other man-made radionuclides were detected in milk samples.
2QO\\ naturally occurring potassium-40 was detected in WKH milk SDWKZD\\. No man-made radionuclides were detected in food
product samples.
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During DQG as in previous years, the operation of Surry Power Station has created no adverse environmental effects or health hazards. The maximum total body dose calculated for a hypothetical individual at the station site boundary due to liquid and gaseous effluents released from the station durinJ was 0.0 millirem.For reference, this dose may be compared to the 620 millirem average annual exposure to every person in the United States from natural and man-made sources.
Natural sources in the environment provide approximately 50% of radiation exposure to man, while nuclear power contributes less than 0.1%. These results
demonstrate
compliance
with
federal and state regulations and demonstrate the adequacy of radioactive effluent controls at Surry Power Station.
6
- 2. PROGRAM DESCRIPTION 2.1 Introduction This report documents the Surry Power Station 2perational Radiological
Environmental Monitoring Program (REMP). Dominion Energys Surry Power Station is located on the Gravel Neck peninsula adjacent to the James River, approximately 25 miles upstream of the Chesapeake Bay. The site consists of two units, each with a pressurized water reactor (PWR) nuclear steam supply system and turbine generator furnished by Westinghouse Electric Corporation. Each unit was designed with a nominal gross electrical output of 910 megawatts electric (MWe). Unit 1 achieved commercial operation on December 22, 1972, and Unit 2 on May 1, 1973.
The United States Nuclear Regulatory Commission regulations (10CFR50.34a) require that nuclear power plants be designed, constructed, and operated to keep levels of radioactive material in effluents to unrestricted areas As Low As (is) Reasonably Achievable. To ensure these criteria are met, the operating license for Surry Power Station includes Technical Specifications that address the release of radioactive effluents. In-plant monitoring is used to ensure that these release limits are not exceeded. As a precaution against unexpected or undefined environmental processes, which might allow undue accumulation of radioactivity in the environment, a program for monitoring the station environs is also included in Surry Power Station Technical Specifications.
Dominion personnel are responsible for collecting the various indicator and control environmental samples. Mirion Technologies is responsible for processing the TLDs.
Teledyne Brown Engineering is responsible for sample analyses. The results of the analyses are used to determine if changes in radioactivity levels may be attributable to station operations. Measured values are compared with control values, which vary with time due to external events, such as cosmic ray bombardment, nuclear weapons test fallout and seasonal variations of naturally occurring radionuclides. Data collected prior to station operation is used to indicate the degree of natural variation to be expected.
This pre-operational data is compared with data collected during the operational phase to assist in evaluating any radiological impact of station operation.
$QQXDO5DGLRORJLFDO(QYLURQPHQWDO2SHUDWLQJ5HSRUW
7
Occasionally, samples of environmental media may show the presence of man-made radionuclides. As a method of referencing the measured radionuclide concentrations in the sample media to a dose consequence to man, the data is compared to the reporting level concentrations listed in the USNRC Regulatory Guide 4.8, Environmental Technical Specifications for Nuclear Power Plants, (December, 1975) and VPAP-2103S, Offsite Dose Calculation Manual (Surry). These concentrations are based upon the annual dose commitment recommended by 10CFR50, Appendix I, to meet the criterion of "As Low As (is)
Reasonably Achievable."
This report documents the results of the REMP for and satisfies the following objectives of the program:
3/4 To provide measurements of radiation and of radioactive materials in those exposure pathways and for those radionuclides that lead to the highest potential radiation exposure of the maximum exposed member of the public resulting from station operations.
3/4 To supplement the radiological effluent monitoring program by verifying radioactive effluents are within allowable limits.
3/4 To identify changes in radioactivity in the environment.
3/4 To verify that station operations have no detrimental effect on the health and safety of the public.
2.2 Sampling and Analysis Program Table 2-1 summarizes the sampling program for Surry Power Station. All samples listed in Table 2-1 are taken at indicator locations except those labeled "control location."
Dominion Energy personnel collect all samples listed in Table 2-1.
Table 2-2 summarizes the analysis program conducted by Teledyne Brown Engineering and Mirion Technologies for Surry Power Station. All samples, except for TLDs, are shipped to Teledyne Brown Engineering, located in Knoxville, TN, for analysis. The TLDs are shipped to Mirion Technologies, located in 2DN5LGJH71, for processing.
The Surry Radiological Monitoring Locations map (Figures 1 - 5) denote sample locations for Surry Power Station. The locations are color coded to designate sample types.
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report
8
Table 2-1 SURRY -
RADIOLOGICAL SAMPLING STATIONS DISTANCE AND DIRECTION FROM UNIT NO. 1 Pg. 1 of 3 Distance Collection Sample Media Location Station Miles Direction Degrees Frequency Remarks Environmental Control (00)
Quarterly Onsite (Stored in lead shield outside the protected area)
TLDs West North West (02) 0.2 WNW 293° Quarterly Site Boundary Surry Station Discharge (03) 0.4 NW 321° Quarterly Site Boundary North North West (04) 0.2 NNW 329° Quarterly Site Boundary North (05) 0.3 N
4° Quarterly Site Boundary North North East (06) 0.3 NNE 28° Quarterly Site Boundary North East (07) 0.3 NE 44° Quarterly Site Boundary East North East (08) 0.4 ENE 67° Quarterly Site Boundary East (09) 0.3 E
89° Quarterly Site Boundary West (10) 0.1 W
271° Quarterly Site Boundary West South West (11) 0.4 WSW 252° Quarterly Site Boundary South West (12) 0.3 SW 228° Quarterly Site Boundary South South West (13) 0.3 SSW 201° Quarterly Site Boundary South (14) 0.4 S
182° Quarterly Site Boundary South South East (15) 0.6 SSE 157° Quarterly Site Boundary South East (16) 0.9 SE 135° Quarterly Site Boundary Station Intake (18) 1.6 ESE 115° Quarterly Site Boundary Hog Island Reserve (19) 2.0 NNE 26° Quarterly Near Resident Bacon's Castle (20) 4.5 SSW 202° Quarterly Apx. 5 miles Route 633 (21) 4.9 SW 227° Quarterly Apx. 5 miles Alliance (22) 5.1 WSW 247° Quarterly Apx. 5 miles Surry (23) 7.7 WSW 256° Quarterly Population Center Route 636 and 637 (24) 4.0 W
270° Quarterly Apx. 5 miles Scotland Wharf (25) 5.0 WNW 284° Quarterly Apx. 5 miles Jamestown (26) 6.3 NW 308° Quarterly Apx. 5 miles Colonial Parkway (27) 3.8 NNW 333° Quarterly Apx. 5 miles Route 617 and 618 (28) 4.9 NNW 340° Quarterly Apx. 5 miles Kingsmill (29) 4.6 N
2° Quarterly Apx. 5 miles Williamsburg (30) 7.8 N
0° Quarterly Population Center Kingsmill North (31) 5.5 NNE 12° Quarterly Apx. 5 miles Budweiser (32) 5.8 NNE 27° Quarterly Population Center Water Plant (33) 5.0 NE 46° Quarterly Apx. 5 miles Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report
9
Table 2-1 SURRY -
RADIOLOGICAL SAMPLING STATIONS DISTANCE AND DIRECTION FROM UNIT NO. 1 Pg. 2 of 3 Distanc e
Collection Sample Media Location Station Miles Direction Degrees Frequency Remarks Environmental BASF (34) 5.1 ENE 70° Quarterly Apx. 5 miles TLDs Lee Hall (35) 7.1 ENE 75° Quarterly Population Center Goose Island (36) 5.1 E
90° Quarterly Apx. 5 miles Fort Eustis (37) 4.9 ESE 104° Quarterly Apx. 5 miles Newport News (38) 19.3 SE 130° Quarterly Population Center James River Bridge (39) 17.1 SE 142° Quarterly Control Location Benn's Church (40) 17.0 SSE 159° Quarterly Control Location Smithfield (41) 13.4 SSE 167° Quarterly Control Location Rushmere (42) 5.3 SSE 156° Quarterly Apx. 5 miles Route 628 (43) 5.1 S
177° Quarterly Apx. 5 miles Air Charcoal Surry Station (SS) 0.3 NNE 18° Weekly Site boundary location with highest D/Q and Particulate Hog Island Reserve (HIR) 2.0 NNE 26° Weekly Bacon's Castle (BC) 4.5 SSW 202° Weekly Alliance (ALL) 5.1 WSW 247° Weekly Colonial Parkway (CP) 3.8 NNW 333° Weekly BASF (BASF) 5.1 ENE 70° Weekly Fort Eustis (FE) 4.9 ESE 104° Weekly Newport News (NN) 19.3 SE 130° Weekly Control Location River Water Surry Station Discharge (SD) 0.4 NW 323° Monthly Scotland Wharf (SW) 4.9 WNW 284° Monthly Control Location Well Water Surry Station (SS) 0.1 SW 227° Quarterly Onsite Hog Island Reserve (HIR) 2.0 NNE 28° Quarterly Construction Site (CS) 0.3 E
87° Quarterly Shoreline Hog Island Reserve (HIR) 0.6 N
7° Semi-Annually Sediment Chickahominy River (CHIC) 11.2 WNW 301° Semi-Annually Control Location Silt Chickahominy River (CHIC) 11.2 WNW 300° Semi-Annually Control Location Surry Station Discharge (SD) 0.5 NW 315° Semi-Annually Surry Station Intake (SI) 1.8 ESE 112° Semi-Annually Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report
10
Table 2-1 SURRY -
RADIOLOGICAL SAMPLING STATIONS DISTANCE AND DIRECTION FROM UNIT NO. 1 Pg. 3 of 3 Distance Collection Sample Media Location Station Miles Direction Degrees Frequency Remarks Milk Colonial Parkway (CP) 3.7 NNW 336° Monthly Beachy Farm (BF) 12.0 SW 220° Monthly Control Location Epps (EPPS) 4.8 SSW 200° Monthly Oysters Point of Shoals (POS) 6.4 SSE 157° Semi-Annually Mulberry Point (MP) 4.9 ESE 124° Semi-Annually Swash Hole Island (SHI) 6.8 SE 128° Semi-Annually Clams Chickahominy River (CHIC) 11.2 WNW 300° Semi-Annually Control Location Surry Station Discharge (SD) 1.3 NNW 341° Semi-Annually Jamestown Island (JI) 3.9 NW 324° Semi-Annually Fish Surry Station Discharge (SD) 1.3 NNW 341° Semi-Annually Crabs Surry Station Discharge (SD) 1.3 NNW 341° Annually Crops Brock's Farm (BROCK) 3.8 S
183° Annually (Corn, Peanuts, Slade's Farm (SLADE) 3.2 S
179° Annually Soybeans) 11 11
Table 2-2 SURRY -
SAMPLE ANALYSIS PROGRAM Pg. 1 of 3 SAMPLE MEDIA FREQUENCY ANALYSIS LLD*
REPORT UNITS Thermoluminescent Quarterly Gamma Dose 6
mR/Std.
Quarter Dosimetry (TLD)
Air Iodine Weekly I-131 0.07 pCi/m3 Air Particulate Weekly Gross Beta 0.01 pCi/m3 Quarterly (a)
Gamma Isotopic pCi/m3 Cs-134 0.05 Cs-137 0.06 River Water Quarterly Tritium (H-3) 2000 pCi/L Composite of monthly sample Monthly I-131 10 pCi/L Gamma Isotopic pCi/L Mn-54 15 Fe-59 30 Co-58 15 Co-60 15 Zn-65 30 Zr-95 30 Nb-95 15 Cs-134 15 Cs-137 18 Ba-140 60 La-140 15 Well Water Quarterly Tritium (H-3) 2000 pCi/L I-131 1
Gamma Isotopic pCi/L Mn-54 15 Fe-59 30 Co-58 15 Co-60 15 Zn-65 30 Zr-95 30 Nb-95 15 Cs-134 15 Cs-137 18 Ba-140 60 La-140 15 Footnotes located at end of table.
12
Table 2-2 SURRY -
SAMPLE ANALYSIS PROGRAM Pg. 2 of 3 SAMPLE MEDIA FREQUENCY ANALYSIS LLD*
REPORT UNITS Shoreline Sediment Semi-Annually Gamma Isotopic pCi/kg - dry Cs-134 150 Cs-137 180 Silt Semi-Annually Gamma Isotopic pCi/kg - dry Cs-134 150 Cs-137 180 Milk Monthly I-131 1
pCi/L Gamma Isotopic pCi/L Cs-134 15 Cs-137 18 Ba-140 60 La-140 15 Quarterly Sr-89 NA pCi/L Composite of CP Sr-90 NA monthly sample Oysters Semi-Annually Gamma Isotopic pCi/kg - wet Mn-54 130 Fe-59 260 Co-58 130 Co-60 130 Zn-65 260 Cs-134 130 Cs-137 150 Clams Semi-Annually Gamma Isotopic pCi/kg - wet Mn-54 130 Fe-59 260 Co-58 130 Co-60 130 Zn-65 260 Cs-134 130 Cs-137 150 Crabs Annually Gamma Isotopic pCi/kg - wet Mn-54 130 Fe-59 260 Co-58 130 Co-60 130 Zn-65 260 Cs-134 130 Cs-137 150 Footnotes located at end of table.
13
Table 2-2 SURRY -
SAMPLE ANALYSIS PROGRAM Pg. 3 of 3 SAMPLE MEDIA FREQUENCY ANALYSIS LLD*
REPORT UNITS Fish Semi-Annually Gamma Isotopic pCi/kg - wet Mn-54 130 Fe-59 260 Co-58 130 Co-60 130 Zn-65 260 Cs-134 130 Cs-137 150 Food Products Annually Gamma Isotopic pCi/kg - wet I-131 60 Cs-134 60 Cs-137 80 Note: This table is not a complete listing of nuclides that can be detected and reported. Other peaks that are measurable and identifiable, together with the above nuclides, are also identified and reported.
LLD is the Lower Limit of Detection as defined and required in the USNRC Branch Technical Position on an Acceptable Radiological Environmental Monitoring Program, Revision 1, November 1979.
LLDs indicate those concentrations to which environmental samples are required to be analyzed.
Actual analysis of samples may be lower than these listed values.
(a) Quarterly composites of each location's weekly air particulate samples are analyzed for gamma emitters. NA None assigned.
14
06 07 N
N E
WNW NW NNW 16 18 08 05 04 03 02 10 11 12 14 15 13 Legend Figure 1. Surry Radiological Monitoring Locations Air Sampling Stations TLD Sampling State Environmental Monitoring Sites State TLD Sites Exclusion Area Boundary Graphics No. SV645F ENE 09 15
Graphics No. CB3308A Figure 2. Surry Emergency Plan Map Air Sampling Stations TLD Sampling Nearest Garden Nearest Milk Animal Aquatic Samples Original © 1991 by ADC of Alexandria, Inc., 6440 General Green Way, Alexandria, VA 22312. USED WITH PERMISSION. No other reproduction may be made without the written permission of ADC.
Nearest Residents 31 NNE NE ENE N
E 29 32 33 34 35 36 19 16
SSE S
Figure 3. Surry Emergency Plan Map Air Sampling Stations TLD Sampling Nearest Garden Nearest Milk Animal Aquatic Samples Original © 1991 by ADC of Alexandria, Inc., 6440 General Green Way, Alexandria, VA 22312. USED WITH PERMISSION. No other reproduction may be made without the written permission of ADC.
Nearest Residents 37 SE ESE E
42 43 Graphics No. CB3309A 17
SSW S
Figure 4. Surry Emergency Plan Map Air Sampling Stations TLD Sampling Nearest Garden Nearest Milk Animal Crop Samples Original © 1991 by ADC of Alexandria, Inc., 6440 General Green Way, Alexandria, VA 22312. USED WITH PERMISSION. No other reproduction may be made without the written permission of ADC.
Nearest Residents 20 SW WSW W
21 22 24 23 Graphics No. CB3310A 18
W Figure 5. Surry Emergency Plan Map Air Sampling Stations TLD Sampling Nearest Garden Nearest Milk Animal Aquatic Samples Original © 1991 by ADC of Alexandria, Inc., 6440 General Green Way, Alexandria, VA 22312. USED WITH PERMISSION. No other reproduction may be made without the written permission of ADC.
Nearest Residents 26 27 25 28 WNW NNW NW N
30 Graphics No. CB3307B 19
- 3. ANALYTICAL RESULTS 3.1 Summary of Results In accordance with the Surry Offsite Dose Calculation Manual (ODCM), a summary table of the analytical results has been prepared and is presented in Table 3-1. This data is presented in accordance with the format of the USNRC Branch Technical Position, "Acceptable Radiological Environmental Monitoring Program", Revision 1, November 1979. A more detailed analysis of the data is provided in Section 4.
20
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Indicator Control Number of Medium or Analysis Total LLD Locations Locations Nonroutine Pathway Sampled Type Number Mean Distance Mean Mean Reported (Units)
(Range)
Number Direction (Range)
(Range)
Measurements Direct Gamma 164 2
0 Radiation Dose TLD (mR/Std. Month )
Air Particulate Gross 416 10 15.9 (364/364)
BC 4.5 mi.
17.7 (52/52) 15.2 (52/52) 0 (1e -3 pCi/m 3 )
Beta (6.56-28.7)
SSW (7.59-28.7)
(5.38-21.3)
GAMMA 32 Cs-134 32 50
<LLD N/A
<LLD
<LLD 0
Cs-137 32 60
<LLD N/A
<LLD
<LLD 0
Be-7 32 113 (28/28)
BC 4.5 mi.
126 (4/4) 113 (4/4) 0 (79.6-133)
SSW (123-133)
(97.1-123)
<LLD N/A
<LLD
<LLD 0
(1e -3 pCi/m 3 )
Milk SR-89 4
5
<LLD N/A
<LLD NA 0
(pCi/Liter)
SR-90 4
1 1.72 (3/4)
CP 3.7 mi.
1.72 (3/4)
NA 0
(1.52-1.87)
NNW (1.52-1.87)
GAMMA 27 Cs-134 27 15
<LLD N/A
<LLD
<LLD 0
Cs-137 27 18
<LLD N/A
<LLD
<LLD 0
Ba-140 27 60
<LLD N/A
<LLD
<LLD 0
La-140 27 15
<LLD N/A
<LLD
<LLD 0
I-131 27 1
<LLD N/A
<LLD
<LLD 0
K-40 27 1199 (16/16)
CP 3.7 mi.
1274 (12/12) 1135 (11/11) 0 (779-1429)
NNW (1161-1429)
(923-1344)
Food Products GAMMA 3
(pCi/kg wet)
Cs-134 3
60
<LLD N/A
<LLD N/A 0
Location with Highest Mean TABLE 3-1: RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
SURRY NUCLEAR POWER STATION Docket No. 50-280-281 21
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Indicator Control Number of Medium or Analysis Total LLD Locations Locations Nonroutine Pathway Sampled Type Number Mean Distance Mean Mean Reported (Units)
(Range)
Number Direction (Range)
(Range)
Measurements Location with Highest Mean TABLE 3-1: RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
SURRY NUCLEAR POWER STATION Docket No. 50-280-281 Food Products (cont'd)
Cs-137 3
80
<LLD N/A
<LLD N/A 0
(pCi/kg wet)
I-131 3
60
<LLD N/A
<LLD N/A 0
K-40 3
7859 (3/3)
SLADE 3.2 mi.
15270 (1/1)
NA 0
(2464-15270)
S (15270-15270)
Well Water H-3 12 2000
<LLD N/A
<LLD N/A 0
(pCi/Liter)
GAMMA 12 Mn-54 12 15
<LLD N/A
<LLD N/A 0
Co-58 12 15
<LLD N/A
<LLD N/A 0
Fe-59 12 30
<LLD N/A
<LLD N/A 0
Co-60 12 15
<LLD N/A
<LLD N/A 0
Zn-65 12 30
<LLD N/A
<LLD N/A 0
Nb-95 12 15
<LLD N/A
<LLD N/A 0
Zr-95 12 30
<LLD N/A
<LLD N/A 0
I-131 12 1
<LLD N/A
<LLD N/A 0
Cs-134 12 15
<LLD N/A
<LLD N/A 0
Cs-137 12 18
<LLD N/A
<LLD N/A 0
Ba-140 12 60
<LLD N/A
<LLD N/A 0
La-140 12 15
<LLD N/A
<LLD N/A 0
22
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Indicator Control Number of Medium or Analysis Total LLD Locations Locations Nonroutine Pathway Sampled Type Number Mean Distance Mean Mean Reported (Units)
(Range)
Number Direction (Range)
(Range)
Measurements Location with Highest Mean TABLE 3-1: RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
SURRY NUCLEAR POWER STATION Docket No. 50-280-281 River Water H-3 8
2000 6850 (1/4)
SD 0.4 mi.
6850 (1/4)
<LLD 0
(pCi/Liter)
(6850-6850)
NW (6850-6850)
GAMMA 24 Mn-54 24 15
<LLD N/A
<LLD
<LLD 0
Co-58 24 15
<LLD N/A
<LLD
<LLD 0
Fe-59 24 30
<LLD N/A
<LLD
<LLD 0
Co-60 24 15
<LLD N/A
<LLD
<LLD 0
Zn-65 24 30
<LLD N/A
<LLD
<LLD 0
Nb-95 24 15
<LLD N/A
<LLD
<LLD 0
Zr-95 24 30
<LLD N/A
<LLD
<LLD 0
I-131 24 10
<LLD N/A
<LLD
<LLD 0
Cs-134 24 15
<LLD N/A
<LLD
<LLD 0
Cs-137 24 18
<LLD N/A
<LLD
<LLD 0
Ba-140 24 60
<LLD N/A
<LLD
<LLD 0
La-140 24 15
<LLD N/A
<LLD
<LLD 0
K-40 24 106 (5/12)
SD 0.4 mi.
106 (5/12) 74.3 (2/12) 0 (98.0-118)
NW (98.0-118)
(69.3-79.2)
Sediment Silt GAMMA 6
(pCi/kg dry)
CS-134 6
150
<LLD N/A
<LLD
<LLD 0
23
^EWŽ^Ž
^Žs
ZŽŽ ŽKZŽ
Indicator Control Number of Medium or Analysis Total LLD Locations Locations Nonroutine Pathway Sampled Type Number Mean Distance Mean Mean Reported (Units)
(Range)
Number Direction (Range)
(Range)
Measurements Location with Highest Mean TABLE 3-1: RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
SURRY NUCLEAR POWER STATION Docket No. 50-280-281 Sediment Silt (cont'd)
Cs-137 6
180
<LLD N/A
<LLD
<LLD 0
(pCi/kg dry)
K-40 6
13205 (4/4)
SI 1.8 mi.
14210 (2/2) 13880 (2/2) 0 (10740-14380)
ESE (14040-14380)
(11830-15930)
Ra-226 6
1866 (1/4)
CHIC 11.2 mi.
4139 (2/2) 4139 (2/2) 0 (1866-1866)
WNW (3967-4311)
(3967-4311)
Ac-228 6
919 (3/4)
SD 0.5 mi.
1047 (2/2) 671 (1/2) 0 (663-1162)
NW (932-1162)
(671-671)
Th-228 6
1120 (4/4)
SI 1.8 mi.
1240 (2/2) 1017 (2/2) 0 (889-1592)
ESE (889-1592)
(823-1211)
Th-232 6
867 (4/4)
CHIC 11.2 mi.
947 (2/2) 947 (2/2) 0 (762-1054)
WNW (723-1171)
(723-1171)
BE-7 6
1972 (1/4)
SI 1.8 mi.
1972 (1/2)
<LLD 0
(1972-1972)
ESE (1972-1972)
Shoreline Sediment GAMMA 4
(pCi/kg dry)
CS-134 4
150
<LLD N/A
<LLD
<LLD 0
CS-137 4
180
<LLD N/A
<LLD
<LLD 0
K-40 4
5268 (2/2)
HIR 0.6 mi.
5268 (2/2) 1685 (2/2) 0 (4638-5897)
N (4638-5897)
(1503-1866)
Th-228 4
166 (1/2)
CHIC 11.2 mi.
281 (2/2) 281 (2/2) 0 (166-166)
WNW (229-334)
(229-334)
Th-232 4
<LLD CHIC 11.2 mi.
336 (1/2) 336 (1/2) 0 WNW (336-336)
(336-336)
Fish GAMMA 4
(pCi/kg wet)
Mn-54 4
130
<LLD N/A
<LLD N/A 0
Co-58 4
130
<LLD N/A
<LLD N/A 0
Fe-59 4
260
<LLD N/A
<LLD N/A 0
Co-60 4
130
<LLD N/A
<LLD N/A 0
Zn-65 4
260
<LLD N/A
<LLD N/A 0
24
^EWŽ^Ž
^Žs
ZŽŽ ŽKZŽ
Indicator Control Number of Medium or Analysis Total LLD Locations Locations Nonroutine Pathway Sampled Type Number Mean Distance Mean Mean Reported (Units)
(Range)
Number Direction (Range)
(Range)
Measurements Location with Highest Mean TABLE 3-1: RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
SURRY NUCLEAR POWER STATION Docket No. 50-280-281 Fish (cont'd)
Cs-134 4
130
<LLD N/A
<LLD N/A 0
(pCi/kg wet)
Cs-137 4
150
<LLD N/A
<LLD N/A 0
K-40 4
1627 (4/4)
SD 1.3 mi.
1627 (4/4)
NA 0
(1145-1989)
NNW (1145-1989)
Oysters GAMMA 6
(pCi/kg wet)
Mn-54 6
130
<LLD N/A
<LLD N/A 0
Co-58 6
130
<LLD N/A
<LLD N/A 0
Fe-59 6
260
<LLD N/A
<LLD N/A 0
Co-60 6
130
<LLD N/A
<LLD N/A 0
Zn-65 6
260
<LLD N/A
<LLD N/A 0
Cs-134 6
130
<LLD N/A
<LLD N/A 0
Cs-137 6
150
<LLD N/A
<LLD N/A 0
Clams GAMMA 6
(pCi/kg wet)
Mn-54 6
130
<LLD N/A
<LLD
<LLD 0
Co-58 6
130
<LLD N/A
<LLD
<LLD 0
Fe-59 6
260
<LLD N/A
<LLD
<LLD 0
Co-60 6
130
<LLD N/A
<LLD
<LLD 0
Zn-65 6
260
<LLD N/A
<LLD
<LLD 0
25
^EWŽ^Ž
^Žs
ZŽŽ ŽKZŽ
Indicator Control Number of Medium or Analysis Total LLD Locations Locations Nonroutine Pathway Sampled Type Number Mean Distance Mean Mean Reported (Units)
(Range)
Number Direction (Range)
(Range)
Measurements Location with Highest Mean TABLE 3-1: RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
SURRY NUCLEAR POWER STATION Docket No. 50-280-281 Clams (cont'd)
Cs-134 6
130
<LLD N/A
<LLD
<LLD 0
(pCi/kg wet)
Cs-137 6
150
<LLD N/A
<LLD
<LLD 0
Crabs GAMMA 1
(pCi/kg wet)
Mn-54 1
130
<LLD N/A
<LLD N/A 0
Co-58 1
130
<LLD N/A
<LLD N/A 0
Fe-59 1
260
<LLD N/A
<LLD N/A 0
Co-60 1
130
<LLD N/A
<LLD N/A 0
Zn-65 1
260
<LLD N/A
<LLD N/A 0
Cs-134 1
130
<LLD N/A
<LLD N/A 0
Cs-137 1
150
<LLD N/A
<LLD N/A 0
K-40 1
1394 (1/1)
SD 1.3 mi.
1394 (1/1)
N/A 0
(1394-1394)
NNW (1394-1394) 26
3.2 Analytical Results of REMP Samples Radiological analyses of environmental media characteristically approach and frequently fall below the detection limits of state-of-the-art measurement methods. The reported error is two times the standard deviation (2V) of the net activity. Unless otherwise noted, the overall error (counting, sample size, chemistry, errors, etc.) is estimated to be 2 to 5 times that listed. Results are considered positive when the measured value exceeds 2V uncertainty, unless otherwise noted. MDC is noted in the footnote in several tables. The term <MDC means the value is less than its Minimum Detectable Concentration and is therefore, not considered a positive value or result. Positive values or results are indicated by bold text.
Teledyne Brown Engineering analytical methods meet the Lower Limit of Detection (LLD) requirements given in Table 2 of the USNRC Branch Technical Position, An Acceptable Radiological Environmental Monitoring Program, (November 1979, Revision 1) and the Surry ODCM.
Data are given according to sample type as indicated below.
- 1. Gamma Exposure Rate
- 2. Air Particulates, Weekly Gross Beta Radioactivity
- 3. Air Particulates, Weekly I-131
- 4. Air Particulates, Quarterly Gamma Spectroscopy
- 5. Animal Milk
- 6. Food Products
- 7. Well Water
- 8. River Water
- 9. Silt
- 10. Shoreline Sediment
- 11. Fish
- 12. Oysters
- 13. Clams
- 14. Crabs 27
Surry Nuclear Power Station Annual Radiological Environmental Operating Report 2023 Surry County, Virginia MDDQ = 3 x sQ
= 3 x 1.0 = 5 Note: IF MDDQ < 5 mR, THEN MDDQ rounded to 5 mR (ANSI N13.37)
MDDA = 3 x sA
= 3 x 2.3 = 10 Note: IF MDDA < 10 mR, THEN MDDA rounded to 10 mR (ANSI N13.37)
Quarterly Normalized Quarterly Quarterly Facility Annual Annual Annual
- Baseline, Monitoring Data, MQ Dose,a Base-Moni-Facility BQ (mrem per standard quarter)
FQ = MQ - BQ line, BA toring Dose,b
- Baseline, (mrem)
(mrem)
- Data, FA =
(mrem)
MA MA - BA 1
2 3
4 1
2 3
4 (mrem)
(mrem) 2 19.8 21.2 21.1 21.0 23.0 ND ND ND ND 79.2 86.4 ND 3
19.2 20.4 20.2 20.1 21.8 ND ND ND ND 76.9 82.5 ND 4
17.9 19.7 20.5 20.1 20.5 ND ND ND ND 71.7 80.7 ND 5
19.0 20.0 19.5 19.6 21.0 ND ND ND ND 76.0 80.2 ND 6
18.4 19.3 19.2 19.8 20.2 ND ND ND ND 73.8 78.4 ND 7
18.7 20.0 20.2 20.0 21.0 ND ND ND ND 74.6 81.1 ND 8
17.0 18.1 19.5 18.0 19.8 ND ND ND ND 68.4 75.3 ND 9
23.2 24.7 24.4 23.0 25.9 ND ND ND ND 92.8 98.1 ND 10 18.1 17.7 18.2 19.2 21.7 ND ND ND ND 72.5 76.8 ND 11 16.1 17.7 17.2 17.1 18.1 ND ND ND ND 64.2 70.1 ND 12 16.6 15.8 16.9 17.6 19.3 ND ND ND ND 66.4 69.5 ND 13 18.6 20.0 20.5 19.4 20.4 ND ND ND ND 74.5 80.3 ND 14 17.9 18.9 20.5 19.5 19.9 ND ND ND ND 71.6 78.8 ND 15 18.5 19.7 20.2 19.1 21.2 ND ND ND ND 74.1 80.1 ND 16 17.0 16.5 18.2 18.0 18.7 ND ND ND ND 67.7 71.4 ND 18 14.5 15.8 15.9 15.9 16.3 ND ND ND ND 58.0 63.9 ND 19 15.5 15.8 15.9 16.6 17.2 ND ND ND ND 62.1 65.5 ND 20 14.3 13.8 14.3 14.5 15.4 ND ND ND ND 57.4 58.0 ND 21 15.1 15.4 16.9 16.4 16.7 ND ND ND ND 60.5 65.4 ND 22 13.2 13.4 12.9 14.2 14.0 ND ND ND ND 52.7 54.5 ND 23 18.1 19.3 18.9 18.6 18.1 ND ND ND ND 72.3 74.9 ND 24 14.8 15.0 15.6 15.0 16.7 ND ND ND ND 59.2 62.3 ND 25 18.1 19.7 19.2 18.6 19.9 ND ND ND ND 72.3 77.3 ND 26 15.7 14.1 15.8 16.7 17.0 ND ND ND ND 62.9 63.6 ND 27 14.7 15.2 14.4 14.5 16.7 ND ND ND ND 58.7 60.8 ND 28 14.2 14.1 14.7 15.2 15.9 ND ND ND ND 56.8 59.9 ND 29 13.2 13.4 13.0 14.0 14.6 ND ND ND ND 52.9 55.0 ND 30 14.4 15.2 14.7 14.9 15.7 ND ND ND ND 57.7 60.5 ND 31 12.3 13.0 12.3 12.9 13.6 ND ND ND ND 49.2 51.8 ND 32 15.2 14.8 15.1 15.1 15.5 ND ND ND ND 60.7 60.5 ND 33 14.2 15.6 15.8 15.9 17.2 ND ND ND ND 57.1 64.4 ND 34 16.0 15.9 16.5 16.0 18.5 ND ND ND ND 64.1 67.0 ND 35 18.6 21.0 18.9 19.8 21.1 ND ND ND ND 74.4 80.8 ND 36 18.6 19.7 19.3 19.4 21.3 ND ND ND ND 74.4 79.8 ND 37 15.4 16.3 15.1 16.6 17.0 ND ND ND ND 61.7 65.0 ND 38 20.9 19.2 18.6 18.8 19.6 ND ND ND ND 83.6 76.1 ND 39 14.9 15.9 15.8 16.1 16.5 ND ND ND ND 59.7 64.3 ND 40 16.2 17.7 17.2 16.9 16.9 ND ND ND ND 64.7 68.8 ND 41 21.8 23.2 23.5 22.1 24.4 ND ND ND ND 87.3 93.2 ND 42 16.4 17.7 17.2 17.3 17.9 ND ND ND ND 65.5 70.1 ND 43 14.3 15.4 14.9 14.9 16.3 ND ND ND ND 57.3 61.6 ND aND = Not detected, where MQ < (BQ + MDDQ) bND = Not detected, where MA < (BA + MDDA) d = Damaged TLDs; m = Missing TLDs; v = Vendor reports TLD not received N/A = Missing or Damaged TLD Reading Not Available for Calculation Note: Table formatted in accordance with ANSI/HPS N13.37-2014, Environmental Dosimetry Criteria for system Design and Implementation TABLE 3-2 GAMMA EXPOSURE RATE (mR/Std. Month) +/- 2 Sigma Monitoring Location 28
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 COLLECTION DATE SS HIR BC ALL CP BASF FE NN-C January 10 20.1 2.75 15.5 2.46 20.8 2.84 18.2 2.72 16.1 2.50 19.2 2.69 20.6 2.79 18.8 2.63 January 17 14.7 2.64 16.1 2.72 21.2 3.00 17.7 2.87 18.2 2.85 16.6 2.79 19.1 2.98 18.4 2.90 January 24 11.3 2.62 11.3 2.63 12.6 2.75 11.0 2.63 11.2 2.54 13.0 2.65 12.1 2.62 11.6 2.51 Feburary 1 13.3 2.38 10.7 2.23 15.2 2.53 14.3 2.51 11.3 2.31 12.3 2.40 13.7 2.54 15.3 2.58 Feburary 8 17.5 2.97 14.0 2.77 20.5 3.16 17.8 3.05 15.1 2.84 17.1 2.94 13.7 2.85 19.4 3.07 Feburary 14 15.1 3.01 14.2 2.92 19.6 3.28 16.3 3.12 17.6 3.13 18.0 3.16 19.2 3.28 19.4 3.23 Feburary 21 14.5 2.81 13.2 2.70 16.2 2.92 15.1 2.88 13.4 2.71 13.6 2.74 15.8 2.91 15.4 2.83 Feburary 28 15.6 2.77 11.2 2.48 16.6 2.83 14.5 2.80 13.6 2.65 14.9 2.74 14.3 2.73 16.3 2.75 March 7 13.2 2.67 10.6 2.48 13.1 2.68 11.2 2.56 12.5 2.60 13.7 2.70 14.6 2.80 11.9 2.60 March 13 9.21 2.77 7.31 2.62 10.6 2.82 9.36 2.75 8.61 2.64 11.4 2.82 9.58 2.76 7.05 2.53 March 20 16.2 2.90 12.9 2.69 16.7 3.05 13.0 2.86 14.8 2.86 17.1 2.98 16.9 3.02 16.9 2.94 March 28 15.8 2.57 14.5 2.47 17.9 2.65 17.1 2.64 14.4 2.47 15.2 2.53 16.3 2.64 16.9 2.63 Qtr. Avg. 2 s.d.
14.7 5.64 12.6 4.99 16.8 +/- 6.90 14.6 5.93 13.9 5.52 15.2 +/- 4.88 15.5 6.34 15.6 7.48 April 4 14.1 2.46 14.6 2.46 16.8 2.58 11.5 2.32 12.6 2.35 16.1 +/- 2.56 14.0 2.49 17.1 2.62 April 11 19.3 3.06 17.0 2.91 24.8 3.32 19.5 3.10 17.7 2.93 17.3 2.93 16.9 2.95 17.2 2.91 April 18 19.2 3.01 13.3 2.66 16.6 2.87 14.3 2.76 14.5 2.71 18.5 2.91 20.0 3.01 19.1 2.90 April 25 23.4 3.18 14.9 2.73 21.6 3.11 19.6 3.05 17.0 2.86 20.0 3.03 23.1 3.25 21.3 3.08 May 2 12.0 2.60 11.8 2.56 15.5 2.80 9.12 2.45 12.1 2.60 12.0 2.59 11.5 2.60 11.6 2.55 May 9 11.8 2.55 9.97 2.42 10.4 2.48 9.37 2.45 9.05 2.40 9.49 2.42 10.1 2.49 8.03 2.31 May 16 14.9 2.82 12.8 2.70 20.1 3.11 15.2 2.89 19.1 3.05 16.3 2.91 15.4 2.91 12.3 2.68 May 23 11.3 2.63 11.3 2.63 12.3 2.71 9.00 2.55 10.5 2.61 10.6 2.61 10.2 2.62 11.2 2.62 May 30 7.63 2.31 7.18 2.28 9.94 2.48 8.09 2.39 8.50 2.39 8.85 2.41 7.62 2.36 8.02 2.34 June 6 7.27 2.31 7.74 2.34 7.59 2.28 7.34 2.30 7.28 2.26 6.56 2.20 6.92 2.26 5.38 2.10 June 13 16.4 2.90 17.0 2.92 16.7 2.95 13.9 2.84 17.6 2.99 18.1 3.01 15.7 2.93 16.4 2.91 June 20 17.4 2.85 15.1 2.73 18.6 2.99 17.0 2.94 17.3 2.90 19.5 3.02 16.2 2.89 20.5 3.05 June 27 11.5 2.36 13.0 2.43 13.0 2.47 10.8 2.36 13.2 2.45 12.9 2.47 11.3 2.38 12.5 2.42 Qtr. Avg. 2 s.d.
14.3 +/- 9.46 12.7 +/- 6.24 15.7 +/- 9.91 12.7 +/- 8.47 13.6 +/- 7.93 14.3 +/- 8.97 13.8 +/- 9.49 13.9 +/- 10.2 TABLE 3-3 AIR PARTICULATES GROSS BETA RADIOACTIVITY (1.0E-3 pCi/m3 +/- 2 Sigma)
SAMPLING LOCATIONS 29
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 TABLE 3-3 AIR PARTICULATES GROSS BETA RADIOACTIVITY (1.0E-3 pCi/m3 +/- 2 Sigma)
SAMPLING LOCATIONS COLLECTION DATE SS HIR BC ALL CP BASF FE NN-C July 3 15.6 3.32 17.4 3.37 14.7 3.16 15.9 3.26 16.0 3.19 19.0 3.38 14.9 3.18 16.6 3.24 July 11 15.6 2.49 17.2 2.54 19.2 2.69 17.1 2.63 16.4 2.56 16.4 2.58 17.4 2.67 17.9 2.66 July 17 16.8 3.41 16.9 3.36 16.8 3.40 13.4 3.22 16.9 3.31 15.3 3.23 14.7 3.24 15.5 3.20 July 25 18.2 2.62 16.2 2.49 18.7 2.66 16.7 2.59 18.8 2.64 19.8 2.69 17.9 2.65 17.7 2.58 August 1 14.8 2.50 15.0 2.48 16.0 2.58 16.8 2.65 14.2 2.46 14.2 2.46 15.7 2.59 14.4 2.46 August 8 10.8 2.54 13.0 2.62 14.8 2.78 10.3 2.56 15.1 2.76 12.9 2.66 13.0 2.71 12.8 2.65 August 15 18.4 2.99 21.3 3.11 21.1 3.11 18.9 3.05 16.9 2.89 22.4 3.19 20.9 3.16 19.1 3.01 August 22 16.5 2.92 16.9 2.95 16.9 2.91 14.0 2.78 15.7 2.82 17.0 2.90 15.5 2.86 13.1 2.68 August 29 16.1 2.89 15.3 2.84 16.2 2.95 16.1 2.96 14.9 2.84 15.8 2.88 14.7 2.87 12.2 2.68 September 5 16.1 2.85 19.4 3.01 18.1 2.91 13.8 2.71 13.1 2.65 18.6 2.95 16.4 2.89 15.5 2.80 September 12 25.1 3.30 23.0 3.19 24.8 3.41 21.2 3.26 24.3 3.34 21.7 3.24 19.7 3.18 19.8 3.13 September 19 21.5 3.15 20.4 3.07 19.9 3.01 19.2 3.00 17.8 2.87 17.8 2.89 18.6 2.97 16.5 2.81 September 25 16.4 3.22 14.9 3.09 20.4 3.49 19.5 3.48 17.9 3.28 16.9 3.22 16.2 3.21 14.7 3.04 Qtr. Avg. 2 s.d.
17.1 +/- 6.80 17.5 +/- 5.69 18.3 +/- 5.69 16.4 +/- 5.96 16.8 +/- 5.52 17.5 +/- 5.54 16.6 +/- 4.46 15.8 +/- 4.78 October 3 10.1 2.26 8.51 2.15 10.3 2.31 7.52 2.22 8.04 2.20 10.3 2.34 7.44 2.21 8.81 2.24 October 10 15.4 2.85 11.7 2.61 16.1 2.97 15.9 2.90 18.0 2.96 18.4 2.99 15.9 2.88 11.6 2.61 October 17 19.7 3.16 14.9 2.89 25.1 3.33 18.1 3.05 19.6 3.11 26.3 3.44 22.3 3.33 18.7 3.11 October 24 11.6 2.52 9.36 2.35 12.7 2.65 8.80 2.43 9.58 2.41 13.5 2.64 11.0 2.52 9.49 2.36 October 31 17.5 +/- 2.93 13.5 +/- 2.66 18.9 +/- 2.93 15.6 +/- 2.78 19.3 +/- 2.94 17.3 +/- 2.84 17.9 +/- 2.91 16.6 +/- 2.78 November 7 28.2 3.43 18.5 2.93 28.7 3.47 25.7 3.36 23.3 3.16 27.3 3.37 25.3 3.32 20.2 3.03 November 13 22.6 3.54 17.8 3.26 25.4 3.72 22.6 3.62 24.4 3.67 27.6 4.09 22.2 3.63 21.1 3.50 November 21 19.4 +/- 2.70 14.4 +/- 2.44 19.5 +/- 2.74 18.1 +/- 2.69 21.2 +/- 2.79 18.5 +/- 2.69 21.7 +/- 2.78 16.6 +/- 2.56 November 28 15.0 2.63 12.2 2.43 20.1 2.92 12.3 2.53 15.7 2.80 15.1 2.71 16.4 2.73 14.2 2.64 December 5 25.2 3.24 17.1 2.78 23.5 3.21 22.1 3.17 24.1 3.17 27.6 3.38 22.3 3.03 20.0 2.94 December 12 21.2 3.01 12.2 2.48 22.6 3.10 14.5 2.68 19.2 2.89 17.1 2.84 20.7 2.95 14.5 2.66 December 19 18.0 2.95 14.1 2.70 19.6 3.05 18.1 3.00 19.2 2.99 20.8 3.14 17.5 2.88 15.3 2.79 December 26 17.3 3.02 11.5 2.65 21.9 3.18 16.8 2.95 19.1 3.01 19.2 3.07 21.9 3.11 17.3 2.93 January 2 9.65 2.44 6.91 2.22 14.1 2.71 8.43 2.39 9.63 2.40 15.0 2.78 9.36 2.36 12.0 2.56 Qtr. Avg. 2 s.d.
17.9 10.8 13.0 6.86 19.9 10.4 16.0 10.9 17.9 10.7 19.6 11.3 18.0 10.9 15.5 7.86 Ann. Avg. 2 s.d.
16.1 8.85 14.0 7.12 17.7 8.90 15.0 8.48 15.6 8.46 16.7 9.02 16.0 8.66 15.2 7.74 30
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 COLLECTION DATE SS HIR BC ALL CP BASF FE NN-C January 10
-11.6 18.0
-11.4 17.7
-11.8 18.4
-12.0 18.7
-1.54 15.4
-1.56 15.6
-1.58 15.8
-1.52 15.2 January 17
-6.20 10.0
-6.20 10.0
-6.29 10.1
-6.42 10.3 0.17 4.89 0.39 10.9 0.40 11.2 0.39 11.0 January 24
-0.84 13.8
-0.85 13.9
-0.86 14.1
-0.85 14.0 1.39 12.7 1.38 12.6 1.40 12.8 0.64 5.82 Feburary 1 10.3 12.5 10.2 12.4 10.6 12.8 10.7 13.0 0.15 17.3 0.15 17.6 0.16 18.2 0.15 17.7 Feburary 8 2.45 12.0 2.42 11.9 2.48 12.2 2.53 12.4 7.71 11.8 7.71 11.8 8.04 12.3 7.78 11.9 Feburary 14 2.82 12.8 1.41 6.44 2.84 12.9 2.88 13.1 2.21 18.7 2.22 18.7 2.28 19.2 2.23 18.8 Feburary 21 2.71 10.9 2.66 10.7 2.74 11.0 2.76 11.1 3.12 5.19 6.94 11.5 7.11 11.8 6.96 11.6 Feburary 28 5.63 13.2 5.52 12.9 5.66 13.3 5.94 13.9
-3.65 9.93
-3.69 10.0
-3.74 10.2
-3.57 9.73 March 7
-11.7 10.7
-5.86 5.38
-11.8 10.8
-11.9 10.9 2.82 16.3 2.87 16.6 2.94 17.0 2.87 16.6 March 13
-0.30 8.47
-0.71 19.9
-0.70 19.7
-0.71 19.9
-0.69 19.3
-4.93 15.2
-5.05 15.5
-4.91 15.1 March 20
-9.24 12.5
-9.11 12.3
-9.85 13.3
-9.85 13.4 5.07 11.3 5.09 11.4 5.18 11.6 5.01 11.2 March 28 3.03 11.0 2.99 10.8 3.02 10.9 3.06 11.1
-15.7 22.9
-15.9 23.2
-16.4 23.9
-16.0 23.4 April 4
-5.39 14.3
-5.32 14.1
-5.36 14.2
-5.44 14.4
-4.91 6.60
-10.5 14.2
-10.8 14.6
-10.6 14.3 April 11 0.86 10.2 0.41 4.83 0.86 10.2 0.87 10.4 3.46 5.01 6.87 9.95 7.01 10.2 6.83 9.90 April 18 8.39 24.6 8.28 24.3 8.39 24.6 8.49 24.9 0.98 21.6 0.97 21.5 0.98 21.8 0.95 21.1 April 25
-0.36 15.4
-0.36 15.1
-0.36 15.4
-0.37 15.7 0.80 13.5 0.80 13.5 0.82 13.9 0.79 13.3 May 2 2.99 19.2 2.94 18.9 2.99 19.2 3.03 19.4
-5.01 20.5
-5.00 20.5
-5.10 20.9
-4.93 20.2 May 9 2.27 10.8 1.14 5.42 2.28 10.8 2.32 11.0 6.13 12.0 6.11 11.9 6.21 12.1 6.02 11.8 May 16 14.7 25.2 14.7 25.1 14.9 25.5 15.2 25.8
-16.9 22.8
-16.8 22.7
-17.2 23.3
-16.6 22.5 May 23
-1.45 15.7
-1.45 15.7
-1.47 15.9
-1.49 16.1
-7.71 12.1
-7.66 12.1
-7.79 12.3
-7.57 11.9 May 30
-3.28 22.1
-3.28 22.1
-3.32 22.4
-3.37 22.7 16.3 23.2 16.2 23.1 16.5 23.5 16.0 22.8 June 6 6.49 22.4 6.49 22.4 6.29 21.7 6.40 22.0 12.4 21.2 12.3 21.1 12.5 21.4 12.1 20.8 June 13 1.70 13.7 1.69 13.6 1.72 13.9 1.75 14.1
-0.82 13.2
-0.81 13.1
-0.83 13.3
-0.80 12.9 June 20 0.62 12.4 0.62 12.4 0.65 13.0 0.66 13.2
-4.45 18.3
-4.45 18.4
-4.55 18.8
-4.40 18.2 June 27
-6.30 22.0
-6.22 21.7
-6.50 22.7
-6.60 23.1 1.47 24.5 1.50 25.0 1.51 25.1 1.47 24.6 TABLE 3-4 AIRBORNE IODINE (1.0E-3 pCi/m3 +/- 2 Sigma)
Sampling Stations 31
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 TABLE 3-4 AIRBORNE IODINE (1.0E-3 pCi/m3 +/- 2 Sigma)
Sampling Stations COLLECTION DATE SS HIR BC ALL CP BASF FE NN-C July 3
-1.56 22.3
-1.52 21.8
-1.50 21.5
-1.51 21.7 9.17 23.8 9.25 24.0 9.33 24.2 9.15 23.8 July 11 15.3 16.6 15.0 16.3 15.5 16.8 15.8 17.1 10.6 15.2 10.7 15.4 11.0 15.8 10.7 15.4 July 17
-1.51 8.08
-1.48 7.90
-1.50 8.01
-1.51 8.08 17.3 18.6 17.3 18.6 17.6 19.0 17.0 18.3 July 25
-1.48 22.9
-0.61 9.41
-1.48 23.0
-1.51 23.4 1.49 19.4 1.49 19.3 1.53 19.9 1.47 19.2 August 1 10.1 22.8 9.99 22.5 10.3 +/- 23.2 10.5 23.6 4.57 +/- 20.5 4.58 +/- 20.5 4.69 +/- 21.0 4.52 +/- 20.2 August 8 2.61 14.7 1.07 6.05 2.67 15.1 2.72 15.4
-12.5 14.9
-12.6 15.1
-12.9 15.4
-12.5 15.0 August 15 4.73 17.3 4.65 17.0 4.78 17.5 4.88 17.9 20.8 17.9 A
21.0 18.1 A
21.4 18.4 A
20.8 17.9 A August 22
-8.75 8.96
-8.78 8.99
-8.68 8.89
-8.81 9.02 9.10 12.4 9.12 12.4 9.27 12.6 4.28 5.82 August 29 6.44 13.7 2.69 5.72 6.59 14.0 6.65 14.1 1.84 11.0 1.83 11.0 1.87 11.2 0.76 4.58 September 5
-15.5 16.9
-15.3 16.7
-15.0 16.4
-15.2 16.5
-4.06 12.4
-4.08 12.4
-4.20 12.8
-4.11 12.5 September 12
-13.9 22.0
-5.84 9.21
-14.5 22.9
-14.7 23.1
-5.70 20.4
-5.76 20.6
-5.88 21.0
-5.75 20.5 September 19 5.35 14.8 5.28 14.6 5.16 14.2 5.23 14.4
-1.93 7.57
-1.96 7.70
-2.00 7.85
-1.96 7.69 September 25 3.78 12.9 3.70 12.6 3.82 13.0 3.87 13.2 0.10 11.4 0.10 11.4 0.10 11.5 0.05 5.67 October 3 1.43 14.2 1.42 14.0 1.47 14.5 1.54 15.2
-12.7 18.6
-12.7 18.6
-13.0 19.0
-12.6 18.4 October 10 17.8 18.7 17.5 18.4 18.8 19.8 18.4 19.4
-3.99 13.8
-4.00 13.8
-4.04 14.0
-3.95 13.6 October 17
-1.17 16.1
-1.16 15.9
-1.15 15.8
-1.17 16.1 3.97 13.5 4.01 13.6 4.13 14.0 4.04 13.7 October 24
-1.25 8.42
-1.23 8.26
-1.31 8.82
-1.32 8.92 0.72 10.5 0.72 10.5 0.73 10.6 0.71 10.3 October 31
-4.96 9.86
-4.85 9.63
-4.83 9.60
-4.89 9.72
-1.07 8.89
-1.07 8.90
-1.09 9.05
-0.80 6.68 November 7
-3.99 +/- 14.8
-3.90 +/- 14.5
-4.00 +/- 14.8
-4.03 +/- 14.9 1.09 +/- 11.6 1.00 +/- 10.6 1.01 +/- 10.8 0.99 +/- 10.5 November 13
-21.5 23.9
-21.3 23.7
-21.9 24.3
-22.2 24.7 7.95 15.0 8.98 16.9 8.11 15.3 7.86 14.8 November 21
-2.08 15.7
-2.06 15.6
-2.11 16.0
-2.13 16.1
-15.7 18.6
-16.4 19.3
-15.4 18.2
-15.6 18.4 November 28
-0.43 12.7
-0.32 9.37
-0.43 12.8
-0.44 13.0
-1.71 19.6
-1.65 18.9
-1.61 18.4
-1.65 18.8 December 5 3.58 12.3 3.48 12.0 3.71 12.8 3.76 13.0 12.9 20.1 13.2 20.6 12.6 19.6 12.7 19.8 December 12
-5.17 13.5
-5.06 13.2
-5.31 13.9
-5.36 14.0 0.61 8.44 0.63 8.70 0.60 8.30 0.61 8.47 December 19
-0.69 18.9
-0.67 18.4
-0.71 19.4
-0.71 19.6 3.30 29.2 3.40 30.1 1.36 12.1 3.28 29.0 December 26
-0.40 20.5
-0.39 20.1
-0.39 20.1
-0.40 20.3 10.6 13.2 10.9 13.6 4.93 6.13 10.6 13.2 January 2 9.29 13.4 9.07 13.1 9.34 13.5 9.41 13.6
-14.8 14.5
-15.3 15.0
-11.1 10.9
-14.8 14.5 A= <MDC 32
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING LOCATIONS Nuclide 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Avg. +/- 2 s.d.
SS CS-134
-1.02 1.02 0.02 0.45 0.05 0.95 0.44 0.59 CS-137
-0.33 0.89 0.10 0.45
-0.81 0.79 0.39 0.38 A BE-7 113 28.3 121 20.3 99.2 22.1 107 16.1 110 18.4 HIR CS-134 0.07 1.02 0.08 0.74
-0.15 0.84 0.16 1.02 CS-137 0.08 0.81 0.54 0.57
-0.29 0.55 0.40 0.83 BE-7 117 22.5 128 22.1 120 22.0 89.8 18.9 114 33.0 BC CS-134
-0.08 0.71
-0.32 0.74 0.50 0.92 0.40 0.90 CS-137
-0.02 0.61 0.53 0.55 0.49 0.67
-0.58 0.70 BE-7 124 21.6 133 24.1 123 24.3 126 21.7 126 9.77 ALL CS-134 0.47 0.84
-0.90 1.00 0.29 0.82 0.36 1.31 CS-137 0.09 0.53 0.46 0.73
-0.22 0.70
-0.01 0.92 BE-7 120 21.2 112 25.0 79.6 16.1 98.9 24.6 103 35.0 CP CS-134
-0.82 0.64
-0.04 0.59 0.80 0.93
-0.60 0.73 CS-137
-0.12 0.54
-0.06 0.55 0.41 0.97
-0.17 0.80 BE-7 121 24.2 118 23.5 111 21.0 123 20.9 118 10.9 BASF CS-134 0.04 0.57
-0.47 0.95
-0.55 0.83
-0.92 0.74 CS-137 0.49 0.58 0.76 0.79
-0.06 0.66 0.01 0.75 BE-7 123 22.8 124 26.3 121 21.4 95.8 19.8 116 26.9 FE CS-134 0.25 1.10
-0.04 0.74
-0.39 0.84 0.13 0.93 CS-137 0.09 0.87
-0.07 0.50 0.31 0.59 0.03 0.64 BE-7 115 26.2 126 23.7 95.4 19.4 86.4 19.1 105 35.5 NN-C CS-134
-0.40 0.62 0.46 0.94 0.33 0.97
-0.17 1.12 CS-137 0.00 0.63
-0.24 0.83
-0.47 0.80 0.61 0.93 BE-7 111 24.0 123 24.5 120 23.9 97.1 19.3 113 23.4 A= <MDC (1.0E-3 pCi/m3 +/- 2 Sigma)
TABLE 3-5 AIR PARTICULATES GAMMA EMITTER CONCENTRATIONS 33
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023
- COLONIAL BEACHY NUCLIDE EPPS PARKWAY FARM-C JANUARY Cs-134 0.65 4.52
-4.23 5.34 5.27 5.77 Cs-137
-2.69 5.12
-2.17 5.05 4.47 4.61 Ba-140
-0.05 15.8
-10.7 15.5
-13.0 16.8 La-140 1.55 4.50 3.04 3.88
-1.64 5.15 I-131 0.04 0.38 0.21 0.51 0.56 0.54 A
K-40 837 148 1259 187 1344 161 FEBRUARY Cs-134
-5.98 6.14 6.48 5.29 A
0.15 5.05 Cs-137 0.43 4.74 3.21 3.99 0.77 4.82 Ba-140
-6.23 23.0
-4.51 20.2 0.41 19.4 La-140
-0.92 6.26
-4.04 7.29 1.22 5.09 I-131
-0.21 0.47
-0.08 0.32 0.09 0.39 K-40 1087 183 1191 183 1234 151 MARCH Cs-134 0.34 5.52 0.11 5.18
-3.66 4.81 Cs-137
-0.74 4.36 4.72 5.89 0.63 4.10 Ba-140
-6.41 13.7
-8.12 20.4
-1.22 16.3 La-140 0.92 3.44 2.51 4.24 1.12 5.16 I-131 0.04 0.35 0.21 0.32
-0.01 0.37 K-40 779 144 1331 197 1093 138 Sr-89 4.06 2.93 A
Sr-90 1.52 0.44 APRIL Cs-134
-0.73 3.08 0.49 4.05
-1.90 3.55 Cs-137
-1.53 3.02 1.63 3.48
-1.77 3.63 Ba-140 2.92 11.4
-0.05 12.1
-3.61 11.6 La-140 0.55 3.03
-4.55 4.05 0.49 4.17 I-131 0.00 0.26 0.23 0.31
-0.09 0.42 K-40 1184 116 1278 143 1038 128 MAY Cs-134 1.35 4.36 0.44 4.76 Cs-137 0.18 4.17 0.92 5.14 Ba-140 (a) 4.63 17.8
-8.33 23.7 La-140 9.45 6.78 A
6.46 6.39 A
-0.15 0.48 0.49 0.42 A
K-40 1269 170 1140 189
- Sr-89/90 analysis performed quarterly on location Colonial Parkway only.
A= <MDC (a): See section 5 program exceptions.
TABLE 3-6 MILK GAMMA EMMITER AND STRONTIUM CONCENTRATIONS (pCi/Liter 2 Sigma) 34
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023
- COLONIAL BEACHY NUCLIDE EPPS PARKWAY FARM-C JUNE Cs-134
-0.88 5.30
-1.02 4.76 Cs-137 2.72 4.84
-0.20 4.63 Ba-140 (a)
-1.65 19.2 17.7 18.9 La-140 1.34 5.04 2.00 6.14 I-131
-0.18 0.34 0.25 0.43 K-40 1301 174 1183 155 Sr-89 3.66 2.34 A
Sr-90 1.78 0.73 JULY Cs-134
-2.16 5.46
-0.70 4.92 Cs-137 0.93 4.48 2.10 4.61 Ba-140 (a)
-15.6 21.0
-0.38 18.1 La-140
-1.32 5.73 2.40 4.50 I-131
-0.02 0.46 0.52 0.57 K-40 1250 171 1244 179 AUGUST Cs-134 1.01 5.71 2.50 5.08 Cs-137 2.87 5.11
-3.16 5.21 Ba-140 (a) 24.3 27.2
-6.90 20.7 La-140
-8.11 5.96 1.59 4.97 I-131
-0.06 0.47
-0.02 0.49 K-40 1319 186 1198 175 SEPTEMBER Cs-134
-3.92 6.25 1.40 4.43 Cs-137 1.31 5.48 3.63 4.97 Ba-140 (a) 4.41 20.2
-7.63 17.4 La-140 4.17 7.40
-0.11 4.01 I-131
-0.31 0.47
-0.40 0.48 K-40 1294 217 1060 186 Sr-89 0.18 2.17 Sr-90 0.81 0.53 A
OCTOBER Cs-134
-3.08 5.13
-1.28 4.12 Cs-137 0.31 4.95
-0.40 4.04 Ba-140 (a) 1.72 17.7 13.2 14.7 La-140
-2.38 5.27
-4.03 4.90 I-131
-0.09 0.45
-0.18 0.53 K-40 1209 164 923 160
- Sr-89/90 analysis performed quarterly on location Colonial Parkway only.
A= <MDC (a): See section 5 program exceptions.
TABLE 3-6 MILK GAMMA EMMITER AND STRONTIUM CONCENTRATIONS (pCi/Liter 2 Sigma) 35
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023
- COLONIAL BEACHY NUCLIDE EPPS PARKWAY FARM-C NOVEMBER Cs-134 3.65 4.76 3.07 4.36 Cs-137 2.43 4.23
-1.34 4.28 Ba-140 (a) 2.25 16.0
-12.8 16.3 La-140 2.36 4.67 0.74 4.30 I-131 0.42 0.42 0.09 0.33 K-40 1429 178 1028 148 DECEMBER Cs-134
-4.51 5.27 Cs-137 1.50 4.85 Ba-140 (a) 7.70 17.6 (a)
La-140 5.55 5.63 I-131
-0.25 0.46 K-40 1161 166 Sr-89
-1.71 2.43 Sr-90 1.87 0.67
- Sr-89/90 analysis performed quarterly on location Colonial Parkway only.
(a): See section 5 program exceptions.
GAMMA EMMITER AND STRONTIUM CONCENTRATIONS (pCi/Liter 2 Sigma)
TABLE 3-6 MILK 36
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION SAMPLE LOCATIONS DATE TYPE Cs-134 Cs-137 I-131 K-40 BROCK 11/7/2023 CORN 6.15 15.3
-3.00 12.8 0.29 14.8 2464 426 FARM 11/7/2023 PEANUTS
-0.09 14.4
-3.26 16.0
-3.17 16.7 5843 553 Cs-134 Cs-137 I-131 K-40 SLADE 11/7/2023 SOYBEANS
-8.47 17.3 11.1 17.2
-12.8 17.6 15270 1068 FARM TABLE 3-7 FOOD PRODUCTS GAMMA EMMITER CONCENTRATIONS (pCi/kg (wet) 2 Sigma)
NUCLIDE 37
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION LOCATIONS DATE Mn-54 Co-58 Fe-59 Co-60 Zn-65 SS 3/30/2023 1.58 3.15 0.91 3.01
-4.18 6.42 0.44 3.26
-5.83 8.43 6/6/2023 1.02 4.24
-0.53 4.29
-6.13 8.26
-0.21 4.14
-9.17 11.0 9/12/2023 0.18 4.56 2.81 5.07
-3.11 8.24 4.88 5.49
-12.2 8.70 12/12/2023
-2.08 2.85 2.21 2.95
-7.83 7.15
-2.83 3.25 0.04 7.55 Nb-95 Zr-95 I-131 Cs-134 Cs-137 3/30/2023
-1.35 3.18 4.81 5.91 0.22 0.41 0.27 3.56
-0.65 2.67 6/6/2023
-2.00 3.88 1.16 7.32 0.64 0.55 A
4.16 3.95 A
-1.08 5.02 9/12/2023
-2.25 5.10 1.16 7.18
-0.05 0.48
-1.94 4.35 0.32 4.97 12/12/2023 1.94 3.23 0.78 6.20 0.30 0.57 0.38 3.54 3.56 3.50 A
Ba-140 La-140 H-3 3/30/2023
-2.74 18.5
-3.24 5.69
-43.1 710 6/6/2023 0.25 16.7 4.79 5.15
-25.3 633 9/12/2023 11.4 17.8 3.69 6.66
-357 718 12/12/2023
-10.4 14.8 2.96 5.17 283 782 Mn-54 Co-58 Fe-59 Co-60 Zn-65 HIR 3/30/2023
-0.50 3.26
-0.06 2.89
-0.52 6.55
-1.20 3.67
-1.06 6.15 6/6/2023 2.05 4.03
-1.96 3.92 2.84 8.24
-0.37 4.55
-5.30 9.44 9/12/2023
-1.59 4.19 2.40 3.55 11.4 8.53 A
4.47 4.53
-0.29 9.48 12/12/2023 1.94 2.34
-1.46 2.28
-1.20 5.42 2.76 3.47 3.76 5.28 Nb-95 Zr-95 I-131 Cs-134 Cs-137 3/30/2023
-0.61 3.45
-1.37 5.51
-0.07 0.54
-3.21 3.67 0.64 3.41 6/6/2023 0.22 3.22 3.60 6.82 0.02 0.52
-0.86 4.95 2.58 4.78 9/12/2023
-1.62 3.43 1.05 6.43
-0.03 0.46
-1.12 3.86
-0.12 4.32 12/12/2023 0.33 2.05
-1.41 4.25 0.17 0.51 1.49 2.34 2.93 3.36 Ba-140 La-140 H-3 3/30/2023
-6.65 13.4
-0.95 4.54 269 725 6/6/2023
-2.55 14.9
-3.44 5.15
-57.0 631 9/12/2023 1.92 14.7
-2.64 4.43
-322 716 12/12/2023
-4.29 12.5
-0.27 3.58 640 788 Mn-54 Co-58 Fe-59 Co-60 Zn-65 TC 3/30/2023
-0.38 3.41 0.35 3.26
-5.04 7.78
-2.14 3.24
-3.82 7.33 6/6/2023 1.38 4.37
-1.92 3.58 7.50 8.30 2.02 5.04
-9.94 10.9 9/12/2023 0.69 3.91 1.36 4.77 0.48 9.22 3.09 4.21
-9.79 11.4 12/12/2023
-1.80 3.00 0.49 3.23
-2.91 6.27
-1.56 3.40 0.44 7.65 Nb-95 Zr-95 I-131 Cs-134 Cs-137 3/30/2023
-0.60 3.33 1.89 5.05 0.15 0.41 0.16 3.67 1.19 3.16 6/6/2023 5.50 4.03 A
-0.64 6.88
-0.25 0.47
-2.41 4.76
-1.86 4.71 9/12/2023 0.21 4.61 1.79 7.25
-0.36 0.44 0.07 5.60
-3.87 3.66 12/12/2023
-1.98 3.54 1.94 6.04 0.17 0.46 1.07 3.03 2.58 3.18 Ba-140 La-140 H-3 3/30/2023
-11.3 15.0 2.15 5.93 234 730 6/6/2023
-2.95 15.6
-2.04 5.11
-272 616 9/12/2023 5.28 16.1 1.94 6.00 239 741 12/12/2023
-13.9 15.8
-2.04 5.82
-226 750 A= <MDC NUCLIDE TABLE 3-8 WELL WATER GAMMA EMMITER AND TRITIUM CONCENTRATIONS (pCi/Liter 2 Sigma) 38
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION LOCATIONS DATE Mn-54 Co-58 Fe-59 Co-60 Zn-65 SD 1/3/2023 1.36 4.08 2.45 3.37
-1.22 5.84
-0.51 4.05
-5.69 7.84 2/8/2023
-3.19 4.20 0.45 3.64 1.69 7.67 2.00 3.84
-5.62 9.51 3/7/2023
-2.28 3.60 0.23 3.24
-1.36 6.61
-1.52 4.24
-2.07 8.10 4/4/2023 0.45 3.23
-3.38 4.37
-1.42 7.01 0.01 4.71
-4.24 9.07 5/2/2023
-0.07 2.76
-1.34 3.13 7.77 8.16
-3.45 4.00
-3.16 6.97 6/6/2023
-0.09 3.65 1.70 3.96
-0.43 6.98
-1.46 2.81
-0.32 8.26 7/3/2023 1.24 3.52
-0.31 3.65 0.41 8.77
-0.55 4.61
-1.83 8.57 8/1/2023
-0.90 2.32 0.03 2.85
-0.98 5.69
-0.96 1.90 1.69 6.42 9/5/2023 0.88 2.80 0.68 3.39
-2.51 6.64
-0.65 3.60
-5.22 7.97 10/3/2023
-0.14 1.60
-0.51 1.80 3.47 4.15 1.72 2.62
-0.61 4.24 11/7/2023 1.07 2.16
-1.72 1.93
-1.51 3.63 1.27 2.55
-2.07 5.15 12/5/2023
-3.03 3.48 2.63 3.74
-3.45 6.95 0.09 3.96 7.38 7.66 Nb-95 Zr-95 I-131 Cs-134 Cs-137 1/3/2023 0.49 2.93
-1.08 5.25 0.21 3.63 1.94 3.89 1.52 3.74 2/8/2023 1.02 3.45 3.93 6.89 4.56 5.35
-0.94 2.96 1.03 4.36 3/7/2023 1.24 3.26
-1.41 6.65
-0.13 3.76 1.30 3.68 0.38 3.47 4/4/2023 1.79 4.09
-0.44 6.93 0.22 5.65
-3.28 4.86 2.46 4.35 5/2/2023 2.07 3.62 0.09 5.77 5.73 5.26 A
-0.30 3.33
-2.58 3.45 6/6/2023 0.22 3.97 0.91 6.36 0.44 4.49
-3.77 4.92 1.27 3.89 7/3/2023 0.42 3.35 0.75 6.20 2.49 5.33 0.45 4.45
-0.60 4.52 8/1/2023 1.99 2.36 4.53 4.23 A
-1.17 5.39 0.44 2.89 1.82 2.90 9/5/2023 2.03 2.96
-1.07 4.79 0.78 4.60
-0.37 3.86
-1.94 3.39 10/3/2023
-0.04 2.29 1.29 3.37
-1.05 2.39 1.34 2.34 0.01 2.48 11/7/2023 0.76 2.05
-2.68 3.65 1.31 2.25 2.18 2.30
-1.90 2.36 12/5/2023 1.71 3.73 3.34 6.15 4.47 5.02 0.64 3.59
-3.72 3.90 Ba-140 La-140 H-3 K-40 1/3/2023 5.15 12.4 1.08 4.72 2/8/2023 9.99 15.2
-1.72 6.31 112 94.0 3/7/2023 1.35 12.6
-2.15 3.65 57.6 620 4/4/2023
-5.61 16.0
-1.01 5.38 5/2/2023 5.19 14.6
-0.91 5.13 6/6/2023 3.92 14.0
-1.53 5.07
-279 749 7/3/2023
-3.43 15.3 1.57 5.63 102 84.8 8/1/2023 4.73 11.9 0.11 4.86 103 63.7 9/5/2023
-2.31 13.0
-2.39 4.79 6850 985 10/3/2023 1.13 7.09
-4.97 3.49 11/7/2023
-3.98 8.06
-0.46 2.98 98.0 55.6 12/5/2023
-5.69 14.3
-1.61 4.55 313 765 118 71.0 A= <MDC NUCLIDE TABLE 3-9 RIVER WATER GAMMA EMITTER AND TRITIUM CONCENTRATIONS (pCi/Liter 2 Sigma) 39
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION LOCATIONS DATE Mn-54 Co-58 Fe-59 Co-60 Zn-65 SW-C 1/3/2023
-2.22 4.26
-1.99 3.92
-1.72 6.59 1.20 3.63
-4.73 9.39 2/8/2023
-2.24 3.67 3.18 4.16 5.95 7.02
-1.26 3.66
-8.74 7.53 3/7/2023
-2.09 3.21
-2.65 3.03 5.01 5.80 1.88 4.20
-5.79 7.42 4/4/2023 1.09 4.20
-1.46 3.81
-3.37 10.8
-7.35 4.97
-1.93 10.1 5/2/2023
-0.59 4.01
-0.43 3.45 3.33 5.40 2.24 3.78
-0.56 7.38 6/6/2023
-1.08 3.68 2.10 3.65
-7.87 9.11 0.17 4.91
-4.82 7.53 7/3/2023
-2.11 3.58 1.20 3.65
-4.15 6.66
-1.98 3.78
-1.50 7.91 8/1/2023 1.05 2.50
-2.47 2.68 1.11 5.78 0.26 2.25 1.41 5.16 9/5/2023
-1.03 2.27
-1.00 2.01 0.80 3.93 0.41 3.31
-5.20 6.13 10/3/2023 1.06 2.12 0.09 2.47 0.44 5.35 1.24 2.47 0.95 4.20 11/7/2023 1.96 2.36 0.73 2.35
-1.75 4.65 1.79 2.23
-6.39 5.62 12/5/2023 0.59 3.38 0.85 3.24 3.14 7.01 1.33 4.01 2.51 8.90 Nb-95 Zr-95 I-131 Cs-134 Cs-137 1/3/2023 3.54 4.04
-5.02 6.98
-0.04 4.08
-2.69 4.13 2.89 3.89 2/8/2023
-2.80 3.27
-4.73 7.40
-0.52 5.46
-2.34 3.80
-1.16 3.46 3/7/2023
-1.71 3.38
-3.70 6.74 0.68 3.56 1.72 3.31 1.00 3.53 4/4/2023
-1.14 4.64
-4.43 7.23 1.52 5.29 2.15 5.43
-2.60 4.81 5/2/2023
-0.15 3.72
-5.84 5.81
-2.14 6.12
-1.13 3.24
-0.17 3.90 6/6/2023 0.02 3.70 2.44 6.53 0.31 4.39
-1.38 4.26
-3.58 4.24 7/3/2023 0.44 3.30
-2.09 5.81
-4.95 5.18 0.13 3.75 0.11 4.15 8/1/2023
-0.42 2.70
-1.17 5.07 4.53 5.08
-1.66 3.31
-0.08 2.86 9/5/2023
-3.06 2.44
-0.47 3.92
-2.00 3.42 0.11 2.41
-0.70 2.50 10/3/2023 0.46 2.16 0.88 3.04
-2.57 3.30 0.31 2.64 0.50 2.63 11/7/2023
-0.51 2.32 1.17 4.07
-0.59 2.52 1.47 2.71
-1.47 2.51 12/5/2023 2.87 4.02 0.36 6.56 3.54 4.96 0.53 4.23 2.04 4.79 Ba-140 La-140 H-3 K-40 1/3/2023 1.82 13.1 3.80 4.48 2/8/2023 0.08 13.5 2.62 5.80 3/7/2023 6.53 11.9 1.90 5.01 51.2 619 4/4/2023 0.92 14.6 2.73 4.90 5/2/2023 12.7 18.8 1.83 4.75 6/6/2023 8.40 13.6
-1.22 5.56 668 793 7/3/2023
-0.60 16.1 2.46 4.48 8/1/2023 14.2 13.0 A
0.69 5.49 9/5/2023
-3.14 9.41
-0.52 4.13
-58.8 684 10/3/2023
-0.32 8.02 0.61 3.58 79.2 74.1 11/7/2023 3.76 8.94
-1.14 3.52 69.3 55.3 12/5/2023
-6.26 16.7 3.56 5.76 54.7 +/- 763 A= <MDC TABLE 3-9 RIVER WATER GAMMA EMITTER AND TRITIUM CONCENTRATIONS (pCi/Liter 2 Sigma)
NUCLIDE 40
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION LOCATIONS DATE Cs-134 Cs-137 K-40 Th-228 SD 3/27/2023 44.9 50.0 25.6 44.6 10740 1540 967 114 9/26/2023 92.1 65.9 A
156 83.2 A
13660 2066 1032 168 Th-232 Ra-226 Ac-228 3/27/2023 797 238 1866 1357 932 237 9/26/2023 855 277 1162 560 Cs-134 Cs-137 K-40 Th-228 SI 3/28/2023 74.3 51.5 A
48.0 54.7 14040 1610 889 147 10/3/2023 32.4 70.0 93.0 76.4 A
14380 1918 1592 311 Th-232 Be-7 Ac-228 3/28/2023 762 217 1972 868 663 457 10/3/2023 1054 259 Cs-134 Cs-137 K-40 Th-228 CHIC-C 3/21/2023 59.2 44.8 A
108 54.4 A
11830 1525 823 135 9/26/2023 70.3 51.4 A
49.2 61.8 15930 1749 1211 154 Th-232 Ra-226 Ac-228 3/21/2023 723 206 3967 1879 671 475 9/26/2023 1171 195 4311 1672 A= <MDC NUCLIDE TABLE 3-10 SEDIMENT SILT GAMMA EMITTER CONCENTRATIONS (pCi/kg (dry) 2 Sigma) 41
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION LOCATIONS DATE Cs-134 Cs-137 K-40 Th-228 HIR 2/14/2023 33.0 29.2 A
-20.8 29.0 5897 1029 8/8/2023 20.7 22.3
-12.0 21.8 4638 710 166 65.6 Cs-134 Cs-137 K-40 Th-228 Th-232 CHIC-C 2/14/2023
-6.89 29.8
-11.11 32.5 1503 582 229 68.3 336 97.0 8/8/2023 14.2 37.7 12.04 38.5 1866 816 334 115 A= <MDC TABLE 3-11 SHORELINE SEDIMENT GAMMA EMITTER CONCENTRATIONS (pCi/kg (dry) 2 Sigma)
NUCLIDE 42
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION LOCATION DATE FISH TYPE Mn-54 Co-58 Fe-59 Co-60 SD 4/20/2023 Catfish
-11.8 35.3
-5.00 33.3 1.71 95.6 14.6 39.1 4/20/2023 Gamefish 12.6 32.8
-14.1 39.3
-7.10 89.2
-19.7 30.9 10/17/2023 Catfish 10.8 17.3 6.82 19.1 17.9 50.0
-1.76 19.6 10/17/2023 Gamefish
-1.40 21.2 3.73 22.0 33.8 52.0 2.58 20.7 Zn-65 Cs-134 Cs-137 K-40 4/20/2023 Catfish
-45.3 58.7
-2.35 36.2
-18.9 33.8 1737 678 4/20/2023 Gamefish
-91.5 80.6 8.16 39.7
-21.8 34.1 1989 729 10/17/2023 Catfish
-21.5 43.1 4.12 17.3 9.92 16.3 1635 534 10/17/2023 Gamefish
-14.8 50.8 4.98 23.9
-33.6 20.4 1145 441 NUCLIDE TABLE 3-12 FISH GAMMA EMITTER CONCENTRATIONS (pCi/kg (wet) 2 Sigma) 43
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION LOCATIONS DATE Mn-54 Co-58 Fe-59 Co-60 POS 3/28/2023
-4.98 29.3 8.67 35.2 12.1 86.5 3.40 27.0 10/3/2023
-13.3 26.3 10.6 25.4
-24.1 58.8 5.81 29.0 Zn-65 Cs-134 Cs-137 3/28/2023 10.8 52.0
-2.29 31.0 11.6 28.8 10/3/2023
-14.9 67.7 7.83 27.2 17.5 24.6 Mn-54 Co-58 Fe-59 Co-60 MP 3/28/2023 21.6 36.5
-26.3 39.5
-15.3 84.8 14.5 32.2 10/3/2023
-39.8 34.5 0.99 34.9
-19.2 81.7 25.9 38.4 Zn-65 Cs-134 Cs-137 3/28/2023
-26.3 83.4
-10.7 32.2
-27.3 34.6 10/3/2023
-49.9 81.5 11.0 36.1 11.2 35.9 Mn-54 Co-58 Fe-59 Co-60 SHI 3/28/2023
-3.46 26.3
-23.8 37.3 106 80.8 A
-38.1 31.4 10/3/2023
-10.1 38.5
-1.12 36.3 5.47 69.8 38.4 38.4 A
Zn-65 Cs-134 Cs-137 3/28/2023 12.4 62.4 28.7 35.2 5.72 29.9 10/3/2023
-154 93.9
-21.4 37.0
-11.1 39.5 A= <MDC TABLE 3-13 OYSTERS GAMMA EMITTER CONCENTRATIONS (pCi/kg (wet) 2 Sigma)
NUCLIDE 44
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION LOCATIONS DATE Mn-54 Co-58 Fe-59 Co-60 JI 3/27/2023
-3.28 34.7
-6.79 43.6
-39.2 86.8
-10.7 27.5 9/26/2023 12.2 29.9 19.3 28.2 55.6 69.1 17.3 23.5 Zn-65 Cs-134 Cs-137 3/27/2023
-7.73 85.9 27.7 42.4 1.82 27.9 9/26/2023
-14.3 59.2 19.0 28.8 20.4 24.6 Mn-54 Co-58 Fe-59 Co-60 SD 3/21/2023 1.32 35.0
-3.51 30.1 62.0 88.7
-15.2 40.3 9/26/2023 3.17 23.8
-8.05 21.0
-32.1 45.6
-0.15 23.5 Zn-65 Cs-134 Cs-137 3/21/2023
-14.5 65.5
-7.23 32.8
-9.94 32.6 9/26/2023 13.8 43.6
-3.14 21.6
-0.06 18.4 Mn-54 Co-58 Fe-59 Co-60 CHIC-C 3/21/2023 11.8 34.9 47.4 42.4 A
21.9 88.4
-1.54 32.0 9/26/2023
-5.96 36.4
-26.7 43.9
-22.5 82.9
-13.5 34.6 Zn-65 Cs-134 Cs-137 3/21/2023
-53.3 83.4 23.9 41.4 36.6 40.4 9/26/2023
-119 107 5.35 40.2
-44.2 38.5 A= <MDC TABLE 3-14 CLAMS GAMMA EMITTER CONCENTRATIONS (pCi/kg (wet) 2 Sigma)
NUCLIDE 45
Surry Nuclear Power Station Surry County, Virginia Annual Radiological Environmental Operating Report 2023 SAMPLING COLLECTION LOCATIONS DATE Mn-54 Co-58 Fe-59 Co-60 SD 7/6/2023 5.75 30.7
-1.46 31.6 43.6 85.8
-0.88 38.0 Zn-65 Cs-134 Cs-137 K-40 7/6/2023
-24.0 66.2 8.10 33.2 7.72 33.8 1394 732 TABLE 3-15 CRABS GAMMA EMITTER CONCENTRATIONS (pCi/kg (wet) 2 Sigma)
NUCLIDE 46
4. DISCUSSION OF RESULTS Data from the radiological analyses of environmental media collected during and tabulated in Section 3, are discussed below. The procedures and specifications followed in the laboratory for these analyses are as required in the Teledyne Brown Engineering quality assurance manuals and laboratory procedures. In addition to internal quality control measures performed by the laboratories, they also participate in an Interlaboratory Comparison Program. Participation in this program ensures that independent checks on the precision and accuracy of the measurements of radioactive material in environmental samples are performed. The results of the Interlaboratory Comparison Program are provided in Appendix B.
The predominant radioactivity detected throughout was from external sources, such as fallout from nuclear weapons tests (cesium-137) and naturally occurring radionuclides.
Naturally occurring
- nuclides, such as beryllium-7, radium-226, actinium-228, thorium-228, thorium-232 and potassium-40, were detected in numerous samples.
The following is a discussion and summary of the results of the environmental measurements taken during thereporting period.
47
4.1 Gamma Exposure Rate A thermoluminescent dosimeter (TLD) is an inorganic crystal used to detect ambient radiation. These TLDs are made of CaF and LiF compounds and are specifically designed for environmental monitoring. Three TLDs are deployed at each sampling location.
TLDs are placed in two concentric rings around the station. The inner ring is in the vicinity of the site boundary, and the outer ring is located at approximately five miles from the station. TLDs are also placed in special interest areas, such as population centers and nearby residences. Additional TLDs serve as controls. Ambient radiation comes from naturally occurring radioisotopes in the air and soil, radiation from cosmic origin, fallout from nuclear weapons testing, station effluents and direct radiation from the station.
The results of the TLD analyses are presented in Table 3-2. 1o detectable external dose to members of the public ZDV DWWULEXWDEOH from Surry Power Station in. The results of the TLD analyses shown in Table 3-2 comply with Section 7 of ANSI/HPS N13.37-2014 to ensure accurate environmental results. The long-term integrity of each field monitoring location is accomplished by a thorough, documented evaluation of the location for changes that could impact data quality in accordance with Section 7.1 of the ANSI Standard. Since off-site processing of TLDs is used, extraneous dose received prior to and after removal from the field is quantified in compliance with Section 7.2 of the ANSI Standard. Data analysis for Table 3-2 was performed in accordance with Section 7.3 of the ANSI Standard. This includes normalizing results to a standard 91-day quarterly monitoring period, determination of the baseline background dose for each monitoring location and determination of the smallest facility-related dose that can be detected above the baseline background.
4.2 Airborne Gross Beta Air is continuously sampled by passing through glass fiber particulate filters. The filters collect airborne particulate radionuclides7KHVHVamples are collectedZHHNO\\ and analyzed for gross beta activity. Results of the weekly gross beta analyses are presented in Table 3-3.7he DQDO\\VLVresults fromWKHcontrol and indicator locations continue to show no significant variation in measured activities. Refer to Figures 4.1 and 4.2 for details. Data presented in these figures indicate that any contribution from station related activities is not measurable.
Gross beta activity found during the pre-operational and early operating period of Surry Power Station was higher because of nuclear weapons testing. During that time, nearly 740 nuclear weapons were tested worldwide. In 1985 weapons testing ceased, and except for the Chernobyl accident in 1986, airborne gross beta results have remained steady.
48
0.000 0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.040 0.045 1/01 1/15 1/29 2/12 2/26 3/11 3/25 4/08 4/22 5/06 5/20 6/03 6/17 7/01 7/15 7/29 8/12 8/26 9/09 9/23 10/07 10/21 11/04 11/18 12/02 12/16 12/30 pCi/m3 Figure 4-1:
2023 GROSS BETA IN AIR PARTICULATES Avg Indicator Ave Control 1.0E-03 1.0E-02 1.0E-01 1.0E+00 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 pCi/m3 Figure 4-2:
GROSS BETA IN AIR PARTICULATES 10 YEAR HISTORICAL TREND Avg Indicator Avg Control Avg-Pre Op Required LLD 49
4.3 Airborne Radioiodine Air is also continuously sampled for radioiodine by passing air through D charcoal cartridge. :HHNO\\ Whe charcoal cartridge samples are collected and analyzed. The results of the analyses are presented in Table 3-4. All results are below the lower limit of detection. No positive iodine-131 was detected in air samples in
4.4 Air Particulate Gamma The air particulate filters from the weekly gross beta analyses are composited by location and analyzed quarterly by gamma spectroscopy. The DQDO\\VLV results are listed in Table 3-5. The results indicate the presence of naturally occurring beryllium-7, which is produced by cosmic processes. No man-made radionuclides were identified.
These analyses confirm there are no effects from station effluents.
4.5 Animal Milk Analysis of milk samples is generally the most sensitive indicator of fission product existence in the terrestrial environment. This, in combination with the significant human consumption of milk, results in this pathway often being the most critical as it relates to station radiological effluents. This pathway also shows measurable amounts of nuclear weapons testing fallout.
Therefore, this media needs to be carefully evaluated when determining the effects from station effluents.
5HVXOWV RI JDPPD VSHFWURVFRS\\ LQGLFDWH QR GHWHFWDEOH VWDWLRQ UHODWHG UDGLRDFWLYLW\\
ZDVLGHQWLILHGLQPLONVDPSOHVLQ2QO\\QDWXUDOO\\RFFXUULQJSRWDVVLXPZDVGHWHFWHG
7KHDQDO\\VLVUHVXOWVDUHSUHVHQWHGLQ7DEOH
At the request of the Commonwealth of Virginia, a quarterly composite sample is prepared from the monthly milk samples from the Colonial Parkway collection station. The composite samples are analyzed for strontium-89 and strontium-90. 6trontium-89 was
detected in the four composite VDPSOHV analyzed. Strontium-90 was detected in WKUHH RI
WKH composite samples,
with an average concentration oI
pCi/L. Strontium-90 is not a component of station radiological effluents and is a product of nuclear weapons testing fallout.
50
4.6 Food Products Three food product samples (corn, peanuts, and soybeans) were collected and analyzed by gamma spectroscopy. TheDQDO\\VLV results are presented in Table 3-7. Only naturally occurring potassium-40 was detected in all samples. No station related radioactivity was detected in this pathway.
4.7 Well Water Well water is not considered to be affected by station operations because no HIIOXHQW
discharges DUHmade to this pathway. However, Surry Power Station monitors well water RQ
Dquarterly IUHTXHQF\\at three indicator locations. Well water samples are analyzed for gamma radiation and tritium. The results are presented in Table 3-8. Nostation related radioactivity was detected in ZHOOZDWHULQHistorically, SULRUWRVWDWLRQRSHUDWLRQVDQG
DVDEDVHOLQH, no gamma emitting isotopes were detectedLQZHOOZDWHUVDPSOHV
4.8 River Water Samples of the James River water are collected monthly and the results are presented in Table 3-9. All samples are analyzed by gamma spectroscopy. 0onthly samples are also composited and analyzed for tritium on a quarterly basis. No station related radioactivity was detected in this pathway
LQ Only naturally occurring potassium-40ZDVdetected.
51
4.9 Silt Silt is sampled to evaluate WKH buildup of radionuclides in the environment due to the operation of the station. Sampling of this pathway provides a good indication of the dispersion effects of effluents to the river.7KHDFFXPXODWLRQRI radionuclides in silt could indirectly increasH WKHradioactivity levels in clams, oysters, crabs, and fish.
Samples of silt are collected from three locations: one upstream, one downstream of the station and one in the dredge area of the station intake. The results of the gamma spectroscopy analyses are presented in Table 3-10. Naturally occurring beryllium-7, potassium-40, radium-226, actinium-228, thorium-228, and thorium-232 were detected.
Historically, cobalt-60 has been detected in samples obtained from the station discharge indicator location. Cobalt-60 has not been detected since 2003. A trend of cesium-137 and cobalt-60 concentrations is graphed and presented in Figures 4- and 4-.
For three decades, the general concentration for cesium-137 has continued todecrease. This trend is the calculated average of the semi-annual analysis results.
The presence of cesium-137 in indicator location, Station Intake, and control location,
&KLFNDKRPLQ\\ is indicative of the accumulation, through runoff, of cesium-137 into the James River from residual weapons testing fallout. Samples collected from the James River, during the pre-operational period, indicated the presence of cesium-137. The pre-operational average cesium-137 concentration is indicated in Figure 4-.
The Station Intake indicator sample was added to the REMP in 2017. The additional sample is collected in the dredge channel area at the station intake. The dredge channel is approximately 150 wide and 1750 in length. This location was added to support future station intake channel dredging operations. The trend of cesium-137 concentration in silt in the station intake dredge channel is procedurally monitored and evaluated.
7KH6WDWLRQ,QWDNHGUHGJHFKDQQHODYHUDJHFHVLXPFRQFHQWUDWLRQZDVS&LNJ7KH
6WDWLRQ'LVFKDUJHDYHUDJHFRQFHQWUDWLRQZDVS&LNJ7KHVHLQGLFDWRUORFDWLRQDFWLYLWLHV
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52
Chickahominy had detectable activity in 1982 and 1984 through 1994. Other years were less than minimum detectable activity (MDA). Station Discharge was <MDA activity 1996 through 1998 and 2004 through 2023.
1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 pCi/kg dry Figure 4-3:
COBALT-60 IN SILT Control -Chickahominy Station Discharge Station Intake Note:StationIntakeadded toREMP,3rdQtr.2017 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 pCi/kg dry Figure 4-4:
CESIUM-137 IN SILT Control - Chickahominy Station Discharge Station Intake Ave-Pre Op Required LLD
4.10 Shoreline Sediment 6KRUHOLQH VHGLPHQW XQOLNH ULYHU VLOW PD\\ SURYLGH D GLUHFW GRVH WR KXPDQV $ EXLOGXS RI
UDGLRQXFOLGHVDORQJWKHVKRUHOLQHPD\\SURYLGHDVRXUFHRIGLUHFWH[SRVXUHIRUWKRVHXWLOL]LQJ
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4.11 Fish 7KHUDGLRDFWLYLW\\PHDVXUHGLQILVKVDPSOHGIURPWKH6WDWLRQ'LVFKDUJH&DQDODQGDQDO\\]HG
E\\JDPPDVSHFWURVFRS\\LVSUHVHQWHGLQ7DEOH7KHDQDO\\VLVUHVXOWVDUHVLPLODUWR
WKRVHVHHQRYHUWKHODVWGHFDGH2QO\\QDWXUDOO\\RFFXUULQJSRWDVVLXPZDVGHWHFWHG1R
UDGLRQXFOLGHVDWWULEXWDEOHWRWKHRSHUDWLRQRIWKHVWDWLRQZHUHGHWHFWHGLQILVKVDPSOHV
4.12 Oysters 7KH UHVXOWV RI WKH JDPPD VSHFWURVFRS\\ DQDO\\VHV LQ R\\VWHU VDPSOHV DUH SUHVHQWHG LQ
7DEOH 1R JDPPD HPLWWLQJ UDGLRQXFOLGHV DWWULEXWDEOH WR WKH RSHUDWLRQ RI WKH VWDWLRQ
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4.13 Clams 7KH UHVXOWV RI WKH JDPPD VSHFWURVFRS\\ DQDO\\VHV LQ FODP VDPSOHV DUH SUHVHQWHG LQ
7DEOH 1R JDPPD HPLWWLQJ UDGLRQXFOLGHV DWWULEXWDEOH WR WKH RSHUDWLRQ RI WKH VWDWLRQ
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4.14 Crabs 7KH UHVXOWV RI WKH JDPPD VSHFWURVFRS\\ DQDO\\VHV URI WKH DQQXDO FUDE VDPSOH DUH
SUHVHQWHG LQ 7DEOH 2WKHU WKDQ QDWXUDOO\\ RFFXUULQJ SRWDVVLXP QR RWKHU JDPPD
HPLWWLQJ UDGLRQXFOLGHV UHODWHG WR VWDWLRQ HIIOXHQWV ZHUH GHWHFWHG LQ WKLV PHGLD 7KLV LV
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54
- 5. PROGRAM EXCEPTIONS There ZHUHWZRexceptionV to the REMP sampling schedule in
7heexceptionV DUHdetailed below:
(SSV'DLU\\FORVHGLQ0D\\DQGZLOOQRORQJHUVXSSO\\PLONWRVXSSRUWWKH5(03
&5 ,QGLFDWRUVDPSOHORFDWLRQ&RORQLDO3DUNZD\\ &3 DWPLOHVUHPDLQV DQGDFWLYHPLONVDPSOLQJORFDWLRQ6DPSOLQJRIEURDGOHDIYHJHWDWLRQLVQRWUHTXLUHG
0LONIURPWKH%HDFK\\)DUPFRQWUROORKXPDQFRQVXPSWLRQFDWLRRQZDVXQDYDLODEOH GXULQJ'HFHPEHUWRVXSSRUWWKHFDOYLQJSURFHVV7KHELUWKDQGQXUVLQJRIDQHZ FDOYHUHVXOWHGLQOLPLWHGPLONEHLQJDYDLODEOHIRUKXPDQFRQVXPSWLRQ0LONFROOHFWLRQIURP
%HDFK\\)DUPUHVXPHGLQ-DQXDU\\
55
- 6. CONCLUSIONS 7KH5DGLRORJLFDO(QYLURQPHQWDO0RQLWRULQJ3URJUDPDQDO\\VLVUHVXOWVIRU6XUU\\
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3/4 Crabs - Other than naturally occurring potassium-40, no other positivegamma emitting radionuclides ZHUHdetected in any of theFUDE samples.
57
REFERENCES 58 58
References 1.
NUREG-0472, "Radiological Effluent Technical Specifications for PWRs", Draft Rev. 3, March 1982.
2.
United States Nuclear Regulatory Commission, Regulatory Guide 1.109, Rev. 1, "Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10CFR50, Appendix I", October 1977.
3.
United States Nuclear Regulatory Commission, Regulatory Guide 4.8, "Environmental Technical Specifications for Nuclear Power Plants", December 1975.
4.
United States Nuclear Regulatory Commission Branch Technical Position, "Acceptable Radiological Environmental Monitoring Program", Rev. 1, November 1979.
5.
Dominion, Station Administrative Procedure, VPAP-2103S, Offsite Dose Calculation Manual (Surry).
6.
Virginia Electric and Power Company, Surry Power Station Technical Specifications, Units 1 and 2.
7.
HASL-300, Environmental Measurements Laboratory, EML Procedures Manual, 27th Edition, Volume 1, February 1992.
8.
NUREG/CR-4007, Lower Limit of Detection: Definition and Elaboration of a Proposed Position for Radiological Effluent and Environmental Measurements, September 1984.
9.
NCRP Report No. 160, Ionizing Radiation Exposure of the Population of the United States, March 2009.
10.
Position paper on Implementation of ANSI/HPS N13.37-2014 Environmental Dosimetry Criteria at Surry Power Station, November 2016 by John M. Sukosky, CHP.
59
APPENDICES 60
APPENDIX A: LAND USE CENSUS Year
61
DOMINION ENERGY 0-HSP-REMP-001 Surry Power Station Revision 14 Page 9 of 13 (Page 1 of 1)
LAND USE CENSUS SECTOR NEAREST RESIDENT NEAREST GARDEN NEAREST COW NEAREST GOAT A-(N) 4.1 @ 10° (a)
(a)
(a)
B-(NNE) 1.9 @ 32° (a)
(a)
(a)
C-(NE) 4.7 @ 35° (a)
(a)
(a)
D-(ENE)
(a)
(a)
(a)
(a)
E-(E)
(a)
(a)
(a)
(a)
F-(ESE)
(a)
(a)
(a)
(a)
G-(SE) 2.8 @ 142° (a)
(a)
(a)
H-(SSE) 2.7 @ 158° 2.7 @ 158° (a)
(a)
J-(S) 1.7 @ 181° 2.0 @ 183° (a)
(a)
K-(SSW) 1.9 @ 192° 1.9 @ 192° 4.8 @ 200° (a)
L-(SW) 2.3 @ 221° 4.7 @ 228° (a)
(a)
M-(WSW) 0.4 @ 244° 3.6 @ 245° (a)
(a)
N-(W) 3.1 @ 260° 3.4 @ 260° (a)
(a)
P-(WNW) 4.9 @ 283° (a)
(a)
(a)
Q-(NW) 4.6 @ 321° (a)
(a)
(a)
R-(NNW) 3.8 @ 338° 4.4 @ 334° 3.7 @ 336° (a)
Locations are listed by miles and degrees heading relative to true north from radius center of Unit 1 Containment.
(a) None 62 62
APPENDIX B:
SUMMARY
OF INTERLABORATORY COMPARISONS Year
63
Summary of Results - Inter-laboratory Comparison Program (ICP)
The TBE Laboratory analyzed Performance Evaluation (PE) samples of air particulate (AP), air iodine, milk, soil, vegetation, and water matrices that represent test & matrix combinations available for REMP programs. The PE samples supplied by Analytics Inc., Environmental Resource Associates (ERA) and Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP), were evaluated against the following pre-set acceptance criteria:
A.
Analytics Evaluation Criteria Analytics evaluation report provides a ratio of TBEs result and Analytics known value. Since flag values are not assigned by Analytics, TBE evaluates the reported ratios based on internal QC requirements based on the DOE MAPEP criteria.
B.
ERA Evaluation Criteria ERAs evaluation report provides an acceptance range for control and warning limits with associated flag values. ERAs acceptance limits are established per the US EPA, National Environmental Laboratory Accreditation Conference (NELAC), state-specific Performance Testing (PT) program requirements or ERAs SOP for the Generation of Performance Acceptance Limits, as applicable. The acceptance limits are either determined by a regression equation specific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.
C.
DOE Evaluation Criteria MAPEPs evaluation report provides an acceptance range with associated flag values. MAPEP defines three levels of performance:
x Acceptable (flag = A) - result within +/- 20% of the reference value x
Acceptable with Warning (flag = W) - result falls in the +/- 20% to +/- 30% of the reference value x
Not Acceptable (flag = N) - bias is greater than 30% of the reference value Note: The Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP) samples are created to mimic conditions found at DOE sites which do not always resemble typical environmental samples obtained at commercial nuclear power facilities.
For the TBE laboratory, 124 out of 131 analyses performed met the specified acceptance criteria. Seven analyses did not meet the specified acceptance criteria and were addressed through the TBE Corrective Action Program. A summary is found below:
1.
The MAPEP February 2023 Soil Ni-63 result was evaluated as Not Acceptable. TBEs reported value was 294 Bq/kg and the known result was 1130 Bq/kg (range 791 - 1469).
The sample was reprepped by a different (senior) lab technician with results of 1120 &
1250 Bq. It was determined that there was a difference between the two techs during the sample prep (technique) and the procedure was revised to reflect these differences including using a specific aliquot amount. (NCR 23-08) 64
2.
The MAPEP February 2023 vegetation Sr-90 result was evaluated as Not Acceptable.
The reported value was 0.05 Bq (not detected) and the known result was a false positive.
This was considered to be a statistical failure because TBEs reported result with 3 times the uncertainty resulted in a slightly positive net result (0.03194 Bq/kg). The reported result was significantly below TBEs average detection limit for vegetation samples.
(NCR 23-09) 3.
The ERA RAD February 2023 water Ba-133 result was evaluated as Not Acceptable. The reported value was 26.0 pCi/L and the known was 22.3 (acceptance range 17.1 - 25.8 pCi) or 117% of the known (acceptable for TBE QC). The sample was used as the workgroup duplicate with a result of 25.4 (114%). The sample had also been counted on a different detector with a result of 21.9 (98%). This was TBEs first failure for Ba-133.
(NCR 23-10) 4.
The MAPEP August 2023 soil Fe-55 result was evaluated as Not Acceptable. The reported value was 346 Bq/kg and the known result was 1280 (acceptance range of 896-1664 Bq/kg). This was TBEs initial evaluation for Fe-55 in soils. The result was received at the end of December and the root cause is under investigation. No client samples were associated with this cross-check. (CAR 23-31) 5.
The Analytics September 2023 milk Sr-90 result was evaluated as Not Acceptable. The reported result was 7.28 pCi/L and the known result was 12.8 (57% of known). This sample was used as the workgroup duplicate and the carrier yields for both samples were 107% and 75%. The LCS recovery for the workgroup was at 106%. The ERA drinking water Sr-90 cross check that was analyzed around the same time was acceptable at 108%. There was no explanation for the failure. This is the first low biased failure for Sr-90 milk. The last failure (high) was in 2016. (NCR 23-24) 6.
The ERA RAD October 2023 water Gross Alpha result was evaluated as Not Acceptable.
The reported result was 53.2 pCi/L and the known result was 70.6 (acceptable range of 54.0 - 87.2 pCi/L). The reported result was the workgroup duplicate and was within 75%
of the known value (within TBE QC range). The original result was 63.3 pCi/L (90% of the known). Because the LCS result was biased slightly high, the decision was made to report the lower value. (NCR 23-20) 7.
The ERA RAD October 2023 water I-131 result was evaluated as Not Acceptable. The reported value was 23.5 pCi/L and the known result was 29.7 (acceptable range of 25.8 -
33.6) The reported result was 79% of the known, which is within the acceptable TBE QC range. The workgroup was reviewed with no anomalies found. The LCS/LCSD results were 109% and 86.1%. The sample was not processed in a timely manner as per the ERA instructions which stated to analyze shortly after receipt due to the short half-life.
Going forward, the QA &/or Lab Mgr. will ensure that this analysis is started sooner.
(NCR 23-21)
The Inter-Laboratory Comparison Program provides evidence of in control counting systems and methods, and that the laboratories are producing accurate and reliable data.
65
Month/Year Identification Number Matrix Nuclide Units TBE Reported Value Known Value (a)
Ratio of TBE to Analytics Result Evaluation (b)
March 2023 E13826 Milk Sr-89 pCi/L 70.5 93.1 0.76 W
Sr-90 pCi/L 12.3 14.7 0.84 A
E13827 Milk Ce-141 pCi/L 127 139 0.91 A
Co-58 pCi/L 119 131 0.91 A
Co-60 pCi/L 250 279 0.90 A
Cr-51 pCi/L 246 302 0.82 A
Cs-134 pCi/L 172 200 0.86 A
Cs-137 pCi/L 125 140 0.89 A
Fe-59 pCi/L 122 122 1.00 A
I-131 pCi/L 70.2 82.0 0.86 A
Mn-54 pCi/L 165 180 0.92 A
Zn-65 pCi/L 306 306 1.00 A
E13828 Charcoal I-131 pCi 79.0 89.9 0.88 A
E13829 AP Ce-141 pCi 91.9 87.8 1.05 A
Co-58 pCi 87.5 82.5 1.06 A
Co-60 pCi 199 176 1.13 A
Cr-51 pCi 218 191 1.14 A
Cs-134 pCi 119 126 0.94 A
Cs-137 pCi 92.4 88.7 1.04 A
Fe-59 pCi 95.5 76.9 1.24 W
Mn-54 pCi 120 113 1.06 A
Zn-65 pCi 179 193 0.93 A
E13830 Soil Ce-141 pCi/g 0.224 0.220 1.02 A
Co-58 pCi/g 0.193 0.207 0.93 A
Co-60 pCi/g 0.406 0.441 0.92 A
Cr-51 pCi/g 0.464 0.477 0.97 A
Cs-134 pCi/g 0.334 0.316 1.06 A
Cs-137 pCi/g 0.270 0.288 0.94 A
Fe-59 pCi/g 0.183 0.193 0.95 A
Mn-54 pCi/g 0.263 0.284 0.93 A
Zn-65 pCi/g 0.475 0.484 0.98 A
E13831 AP Sr-89 pCi 99.4 90.8 1.09 A
Sr-90 pCi 14.6 14.3 1.02 A
(a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b)
Analytics evaluation based on TBE internal QC limits:
A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services 66
Month/Year Identification Number Matrix Nuclide Units TBE Reported Value Known Value (a)
Ratio of TBE to Analytics Result Evaluation (b)
Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 September 2023 E13832 Milk Sr-89 pCi/L 49.8 71.4 0.70 W
Sr-90 pCi/L 7.28 12.8 0.57 N(1)
E13833 Milk Ce-141 pCi/L 93.4 104 0.90 A
Co-58 pCi/L 58.2 65.8 0.88 A
Co-60 pCi/L 190 223 0.85 A
Cr-51 pCi/L 207 205 1.01 A
Cs-134 pCi/L 96.0 114 0.84 A
Cs-137 pCi/L 121 141 0.86 A
Fe-59 pCi/L 78.8 78.8 1.00 A
I-131 pCi/L 27.9 37.4 0.75 W
Mn-54 pCi/L 128 146 0.88 A
Zn-65 pCi/L 185 203 0.91 A
E13834 Charcoal I-131 pCi 76.9 78.7 0.98 A
E13835 AP Ce-141 pCi 91.9 87.1 1.05 A
Co-58 pCi 58.7 55.2 1.06 A
Co-60 pCi 200 187 1.07 A
Cr-51 pCi 192 172 1.12 A
Cs-134 pCi 89.6 96 0.94 A
Cs-137 pCi 109 119 0.92 A
Fe-59 pCi 68.3 66.1 1.03 A
Mn-54 pCi 129 123 1.05 A
Zn-65 pCi 163 171 0.96 A
E13836 Soil Ce-141 pCi/g 0.228 0.184 1.24 W
Co-58 pCi/g 0.103 0.116 0.89 A
Co-60 pCi/g 0.364 0.394 0.92 A
Cr-51 pCi/g 0.371 0.362 1.02 A
Cs-134 pCi/g 0.176 0.202 0.87 A
Cs-137 pCi/g 0.285 0.315 0.90 A
Fe-59 pCi/g 0.140 0.139 1.00 A
Mn-54 pCi/g 0.237 0.259 0.92 A
Zn-65 pCi/g 0.349 0.359 0.97 A
E13837 AP Sr-89 pCi 74.6 80.2 0.93 A
Sr-90 pCi 13.9 14.4 0.96 A
(a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b)
Analytics evaluation based on TBE internal QC limits:
A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30
6HH1&5
67
Month/Year Identification Number Matrix Nuclide Units TBE Reported Value Known Value (a)
Acceptance Range Evaluation (b)
February 2023 23-MaS48 Soil Ni-63 Bq/kg 294 1130 791 - 1469 N(3) 23-MaSU48 Urine Cs-134 Bq/L 9.92 10 6.7 - 12.4 A
Cs-137 Bq/L 0.0994 (1)
A Co-57 Bq/L 9.35 8.67 6.07 - 11.27 A
Co-60 Bq/L 9.03 8.13 5.69 - 10.57 A
Mn-54 Bq/L 11.80 10.0 7.0 - 13.0 A
U-234 Bq/L 0.01 Not spiked U-238 Bq/L 0.01 Not spiked Zn-65 Bq/L 10.60 9.29 6.50 - 12.08 A
23-MaW48 Water Ni-63 Bq/L 23.1 27.3 19.1 - 35.5 A
23-RdV48 Vegetation Cs-134 Bq/sample 5.6 7.6 5.32 - 9.88 W
Cs-137 Bq/sample 0.03 (1)
A Co-57 Bq/sample 5.9 6.9 4.85 - 9.01 A
Co-60 Bq/sample 5.00 6.51 4.56 - 8.46 W
Mn-54 Bq/sample 6.08 8.03 5.62 - 10.44 W
Sr-90 Bq/sample 0.05 (1)
N(4)
Zn-65 Bq/sample 5.49 7.43 5.20 - 9.66 W
August 2023 23-MaS49 Soil Fe-55 Bq/kg 346 1280 896 - 1664 N(5)
Ni-63 Bq/kg 1260 1370 959 - 1781 A
23-MaW49 Water Ni-63 Bq/L 1.0 1
(2)
A 23-RdV49 Vegetation Cs-134 Bq/sample 3.860 4.98 3.49 - 6.47 W
Cs-137 Bq/sample 0.027 (1)
A Co-57 Bq/sample 3.88 4.24 2.97 - 5.51 A
Co-60 Bq/sample 2.37 2.79 1.95 - 3.63 A
Mn-54 Bq/sample 2.04 2.56 1.79 - 3.33 W
Sr-90 Bq/sample 0.96 1.17 0.82 - 1.52 A
Zn-65 Bq/sample
-0.514 (1)
A (a) The MAPEP known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) DOE/MAPEP evaluation:
A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 (1) False positive test (2) Sensitivity evaluation (3) See NCR 23-08 (4) See NCR 23-09 (5) Initial evaluation - See CAR 23-31 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)
Teledyne Brown Engineering Environmental Services 68
Month/Year Identification Number Matrix Nuclide Units TBE Reported Value Known Value (a)
Acceptance Limits Evaluation (b)
March 2023 MRAD-38 Water Am-241 pCi/L 28.1 32.1 22.0 - 41.0 A
Fe-55 pCi/L 1180 1380 811 - 2010 A
Pu-238 pCi/L 65.6 70.7 42.5 - 91.6 A
Pu-239 pCi/L 82.9 92.4 57.2 - 114 A
Soil Sr-90 pCi/kg 2630 2580 803 - 4020 A
AP GR-A pCi/filter 69.6 76.8 40.1 - 127 A
GR-B pCi/filter 36.8 32.8 19.9 - 49.6 A
April 2023 RAD-133 Water Ba-133 pCi/L 26.0 22.3 17.1 - 25.8 N(1)
Cs-134 pCi/L 72.1 77.6 63.4 - 85.4 A
Cs-137 pCi/L 62.1 63.1 56.8 - 72.2 A
Co-60 pCi/L 32.6 30.3 26.7 - 36.1 A
Zn-65 pCi/L 253 242 218 - 283 A
GR-A pCi/L 34.2 29.2 14.9 - 38.2 A
GR-B pCi/L 64.3 60.7 41.8 - 67.4 A
U-Nat pCi/L 61.75 62.7 51.2 - 69.0 A
H-3 pCi/L 13,300 12700 11,100 - 14,000 A
Sr-89 pCi/L 67.0 61.1 49.2 - 69.0 A
Sr-90 pCi/L 36.5 36.0 26.4 - 41.5 A
I-131 pCi/L 24.3 28.7 23.9 - 33.6 A
September 2023 MRAD-39 Water Am-241 pCi/L 54.0 71.0 48.7 - 90.8 A
Fe-55 pCi/L 2430 2630 1550 - 3830 A
Pu-238 pCi/L 172 177 106 - 229 A
Pu-239 pCi/L 171 182 113 - 224 A
Soil Sr-90 pCi/kg 9580 6800 2120 - 10,600 A
AP GR-A pCi/filter 82.2 79.8 41.7 - 131 A
GR-B pCi/filter 54.3 42.6 25.8 - 64.4 A
October 2023 RAD-135 Water Ba-133 pCi/L 86.3 92.2 73.8 - 111 A
Cs-134 pCi/L 38.4 41.2 27.9 - 54.5 A
Cs-137 pCi/L 194 199 161 - 237 A
Co-60 pCi/L 49.5 47.8 33.8 - 61.8 A
Zn-65 pCi/L 59.7 57.0 23.7 - 90.3 A
GR-A pCi/L 53.2 70.6 54.0 - 87.2 N(2)
GR-B pCi/L 46.9 42.2 30.5 - 53.9 A
U-Nat pCi/L 51.26 51.7 45.9-57.5 A
H-3 pCi/L 20,100 22,900 19,700 - 26,100 A
Sr-89 pCi/L 51.1 38.2 25.2 - 51.2 A
Sr-90 pCi/L 31.7 35.7 30.3 - 41.1 A
I-131 pCi/L 23.5 29.7 25.8 - 33.6 N(3)
(a) The ERA known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.
(b) ERA evaluation:
A = Acceptable - Reported value falls within the Acceptance Limits N = Not Acceptable - Reported value falls outside of the Acceptance Limits (1) See NCR 23-10 (2) See NCR 23-20 (3) See NCR 23-21 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services 69