L-MT-24-013, 2023 Annual Radiological Environmental Operating Report
| ML24135A276 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 05/14/2024 |
| From: | Brown G Northern States Power Co, Xcel Energy |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| L-MT-24-013 | |
| Download: ML24135A276 (1) | |
Text
fl Xcel Energy May 14, 2024 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Monticello Nuclear Generating Plant Docket No. 50-263 Renewed Facility Operating License No. DPR-22 2023 Annual Radiological Environmental Operating Report 2807 West County Road 75 Monticello, MN 55362 L-MT-24-013 10 CFR 50, Appendix I Pursuant to 10 CFR 50, Appendix I, Section IV.B.2, IV.B.3, IV.C and, in accordance with Monticello Nuclear Generating Plant (MNGP) Technical Specifications 5.6.1, the Northern States Power Company, a Minnesota corporation (NSPM), d/b/a Xcel Energy, is submitting the following enclosures:
Annual Radiological Environmental Operating Report, under MNGP's "Radiological Environmental Monitoring Program," for year 2023. (Enclosure 1) 2022 Annual Radiological Environmental Operating Report Update. (Enclosure 2)
Summary of Commitments This letter makes no new commitments and no revisions to existing commitments.
/470~
Gregory D. Brown Plant Manager, Monticello Nuclear Generating Plant Northern States Power Company - Minnesota Enclosures (2) cc:
Administrator, Region 111, USNRC Project Manager, Monticello, USNRC Resident Inspector, Monticello, USNRC Minnesota Department of Commerce
ENCLOSURE 1 RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM JANUARY 1 - DECEMBER 31, 2023
Pages Follow
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT (AREOR)
Monticello Nuclear Generating Plant Last Updated: 5/3/2024
~ ARCADIS fl Xcel Energy RESPONSIBLE BY NATURE
arcadis.com 2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT Monticello Nuclear Generating Plant Prepared for:
Xcel Energy, Inc.
Prepared by:
Arcadis US, Inc.
630 Plaza Drive Suite 200 Highlands Ranch Colorado 80129 Our Ref.:
30078625 Date: 5/3/2024 Michael Hay, PhD Principal Scientist Senior Technical Advisor Josh Myers, PG Project Manager Quality Assurance Reviewer Brooke Thompson Environmental Engineer Quality Assurance Reviewer
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com i
CONTENTS Acryonyms and Abbreviations....................................................................................................................... v References................................................................................................................................................... vii Executive Summary................................................................................................................................ ES-1 Summary of Activities and Results................................................................................................... ES-1 1
Introduction............................................................................................................................................. 2 1.1 Site Description and Sample Locations........................................................................................ 4 1.1.1 Site Description................................................................................................................. 4 1.1.2 Rationale for Sample Locations........................................................................................ 4 1.2 Scope and Requirements of the REMP........................................................................................ 4 2
Radiological Environmental Sampling Program Requirements............................................................. 6 2.1 Exposure Pathway and Sample Locations................................................................................... 6 2.2 Maps of Sample Locations......................................................................................................... 14 3
Statistical and Calculational Methodology............................................................................................ 19 3.1 Trend Identification..................................................................................................................... 19 3.2 Estimation of the Mean Value..................................................................................................... 19 3.3 Lower Limit of Detection and Minimum Detectable Concentration............................................. 20 3.4 Reporting Levels and Lower Limits of Detection for Radioactivity............................................. 20 4
Interpretation of Results....................................................................................................................... 24 4.1 Airborne Radioiodine and Particulates....................................................................................... 24 4.2 Drinking Water............................................................................................................................ 26 4.3 River Water................................................................................................................................. 26 4.4 Groundwater............................................................................................................................... 27 4.5 Broadleaf Vegetation.................................................................................................................. 27 4.6 Food Products............................................................................................................................. 27 4.7 Fish............................................................................................................................................. 28 4.8 Shoreline Sediment..................................................................................................................... 29 4.9 Direct Gamma Radiation............................................................................................................ 30 4.9.1 Environmental TLD.......................................................................................................... 30 4.9.2 ISFSI TLD........................................................................................................................ 31 5
Land Use Census................................................................................................................................. 32 5.1 Purpose....................................................................................................................................... 32
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com ii 5.2 Methodology............................................................................................................................... 33 5.3 2023 Land Use Census.............................................................................................................. 33 6
Quality Assurance................................................................................................................................. 36 6.1 Sample Collection....................................................................................................................... 36 6.2 Sample Analysis......................................................................................................................... 36 6.3 Dosimetry Analysis..................................................................................................................... 36 6.4 Laboratory Equipment Quality Assurance.................................................................................. 36 6.4.1 Daily Quality Control........................................................................................................ 36 6.4.2 Calibration Verification.................................................................................................... 36 6.5 General Engineering Laboratory, LLC........................................................................................ 36 6.6 Environmental Dosimetry Company........................................................................................... 37 7
Environmental Sampling Modifications................................................................................................ 38 7.1 Program Modifications................................................................................................................ 38 7.2 Change of Sampling Procedures................................................................................................ 38 7.3 Change of Analysis Procedures................................................................................................. 38 7.4 Sample Deviations and Unavailable Analyses........................................................................... 38 7.5 Analytical Deviations................................................................................................................... 41 8
Radiological Environmental Monitoring Program - Summary of Results............................................. 42 8.1 Radiological Environmental Monitoring Program Data Summary.............................................. 42 9
Errata to Previous Reports................................................................................................................... 47 9.1 Errata to the MNGP AREOR...................................................................................................... 47 10 Radiological Environmental Monitoring Program Results.................................................................... 48 10.1 Detection of activity..................................................................................................................... 49
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com iii TABLES Table 2.1-1: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis: Airborne (ODCM 07.01 Table 1)........................................................ 6 Table 2.1-2: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis: Direct Radiation (ODCM 07.01 Table 1)............................................ 7 Table 2.1-3: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis: Waterborne (ODCM 07.01 Table 1)................................................... 8 Table 2.1-4: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis: Ingestion (ODCM 07.01 Table 1)....................................................... 9 Table 2.1-5: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (ODCM 07.01 Table 4)...................................................................... 10 Table 3.4-1: Reporting Levels for Radioactivity Concentrations in Environmental Samples (ODCM 07.01 Table 2)................................................................................................................................................. 21 Table 3.4-2: Maximum Values for the Lower Limits of Detection (LLD) (ODCM 07.01 Table 3)................ 22 Table 3.4-3: Analysis and Frequency of Samples...................................................................................... 23 Table 5.3-1: Summary of Highest Location for Each Pathway in 2023...................................................... 35 Table 7.4-1: Sample Deviations and Unavailable Analyses....................................................................... 39 Table 7.5-1: Analytical Deviations............................................................................................................... 41 Table 8.1-1: Radiological Environmental Monitoring Program Summary................................................... 43 DATA TABLES Airborne Cartridge: Radioiodine.................................................................................................................. 50 Airborne Particulates: Gross Beta............................................................................................................... 53 Airborne Particulates: Gamma Isotopic...................................................................................................... 55 Sediment: Gamma Isotopic......................................................................................................................... 58 Tissue - Fish: Gamma Isotopic.................................................................................................................. 60 Tissue - Plant: Gamma Isotopic................................................................................................................. 61 Water: Tritium.............................................................................................................................................. 62 Water - Drinking: Gross Beta..................................................................................................................... 63 Water - Groundwater: Gamma Isotopic..................................................................................................... 64 Water - Drinking: Gamma Isotopic............................................................................................................. 66 Water - Surface: Gamma Isotopic.............................................................................................................. 67 Direct Radiation - TLD: Gamma................................................................................................................. 70 Direct Radiation - ISFSI: Gamma............................................................................................................... 72
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com iv FIGURES Figure 1.0-1: Monitored Potential Exposure Pathways................................................................................. 3 Figure 2.2-1: Radiation Environmental Monitoring Program (ODCM 07.01 Figure 1)................................ 14 Figure 2.2-2: 4 - 5 Mile Ring and Special Interest TLD Locations (ODCM 07.01 Figure 2)...................... 15 Figure 2.2-3: Site Boundary TLD Locations (ODCM 07.01 Figure 3)......................................................... 16 Figure 2.2-4: Control Locations (ODCM 07.01 Figure 4)............................................................................ 17 Figure 2.2-5: ISFSI TLD Locations (ODCM 07.01 Figure 5)....................................................................... 18 Figure 4.1-1: Graph of Historical Airborne Particulate Gross Beta............................................................. 24 Figure 4.1-2: Graph of 2023 Average Airborne Particulate Gross Beta for Indicator and Control Locations.............................................................................................................................................. 25 Figure 4.2-1: Graph of Historical Gross Beta for Drinking Water Sample.................................................. 26 Figure 4.8-1: Graph of Historical Cesium-137 in River Sediment............................................................... 29 Figure 4.9.1-1: Graph of Direct Gamma Radiation Measurements............................................................ 30 Figure 4.9.1-2: Graph of Historical Direct Gamma Measurements............................................................. 31 EQUATIONS Equation 1................................................................................................................................................... 19 APPENDICES Appendix A GEL Laboratories, LLC 2023 Annual Quality Assurance Report Appendix B Environmental Dosimetry Company, Annual Quality Assurance Status Report, January -
December 2023
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com v
ACRYONYMS AND ABBREVIATIONS AREOR Annual Radiological Environmental Operating Report BTP Radiological Assessment Branch Technical Position, Rev. 1, on Radiological Monitoring CFR Code of Federal Regulations D/Q Deposition Coefficient E
East EDC Environmental Dosimetry Company ENE East-Northeast ESE East-Southeast ft feet ft2 square feet GEL General Engineering Laboratories LLC GPS Global Positioning System ISFSI Independent Spent Fuel Storage Installation LLD lower limit of detection LOD limit of detection MDA minimum detectable activity MDC minimum detectable concentration MDL minimum detection limit mi mile MNGP Monticello Nuclear Generating Plant mrem millirem MWe megawatt electric N
North NE Northeast NIST National Institute of Standards and Technology NNE North-Northeast NNW North-Northwest NRC Nuclear Regulatory Commission NW Northwest OCA owner-controlled area ODCM Offsite Dose Calculation Manual
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com vi pCi/g picocurie per gram pCi/L picocurie per liter pCi/kg picocurie per kilogram pCi/m3 picocurie per cubic meter REMP Radiological Environmental Monitoring Program S
South SE Southeast SSE South-Southeast std quarter Standard quarter, 91 days SSW South-Southwest SW Southwest TLD Thermoluminescent Dosimeter USB Universal Serial Bus W
West WNW West-Northwest WSW West-Southwest
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com vii REFERENCES Arnold, J.R., and H.A. Al-Salih. 1955. Beryllium-7 Produced by Cosmic Rays. Science. April 121(3144):
451-453.
Barnett, F., P. Carson, T. Linscome-Hatfield, and H. Brittingham. ProUCL 5.2. U.S. Environmental Protection Agency, Washington, DC, 2022.
Code of Federal Regulations (CFR), 10 CFR Appendix I to Part 50 - Numerical Guides for Design Objectives and Limiting Conditions for Operation To Meet the Criterion "As Low as is Reasonably Achievable" for Radioactive Material in Light-Water-Cooled Nuclear Power Reactor Effluents, January 2002.
Code of Federal Regulations (CFR), 40 CFR Part 141-National Primary Drinking Water Regulations, December 1975.
MNGP Chemistry Manual, Procedure I.05.41, Annual Land Use Census and Critical Receptor Identification.
Nuclear Regulatory Commission (NRC) Generic Letter 79-65 Radiological Environmental Monitoring Program Requirements Enclosing Branch Technical Position (BTP), Revision 1, November 1979.
NUREG 1302 Offsite Dose Calculation Manual Guidance: Standard Radiological Effluent Controls for Boiling Water Reactors, April 1991.
Offsite Dose Calculation Manual (ODCM) 07.01 Monticello Nuclear Generating Plant, Revision 27.
Regulatory Guide 4.15 Quality Assurance for Radiological Monitoring Programs, Revision 1, 1979.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com ES-1 EXECUTIVE
SUMMARY
This 2023 Annual Radiological Environmental Operating Report (AREOR) describes the Monticello Nuclear Generating Plant (MNGP) Radiological Environmental Monitoring Program (REMP) and program results for the 2023 calendar year.1 MNGP is operated by Northern States Power Company, a Minnesota corporation, doing business as Xcel Energy (Xcel) under a license granted by the U.S. Nuclear Regulatory Commission (NRC).
Provisions of NRCs NUREG-1302, NRC Generic Letter 79-65 Branch Technical Position, MNGP Technical Specifications, and MNGPs Offsite Dose Calculation Manual (ODCM) establish the requirements of the REMP. This AREOR describes the purpose and scope of MNGPs REMP, along with the monitoring and sampling results for the reporting period.
AREOR Contents This AREOR includes the following:
x Identification of sampling locations x
Descriptions of environmental sampling and analysis procedures x
Comparisons of present environmental radioactivity levels and historical environmental data x
Analyses of trends in environmental radiological data as potentially affected by MNGP operations x
A summary of environmental radiological sampling results x
Quality assurance practices, sampling deviations, unavailable samples, and program changes, as applicable Summary of Activities and Results Sampling activities were conducted as prescribed by MNGPs ODCM. Required analyses were performed and detection capabilities were met for the collected samples required by the ODCM. To compile data for this AREOR, 818 samples were analyzed, yielding 1,849 test results. Based on the annual MNGP Land Use Census, the current number of sampling sites for MNGP is sufficient. Concentrations observed in the environment in 2023 for MNGP-related radionuclides were within the ranges of concentrations observed in the past. The continued operation of MNGP has not contributed measurable radiation to the environment.
1 Some of the composite samples which correspond to Quarter 4 and December 2022 extended to January 3rd, 2023. These data were provided in the 2022 AREOR and are not discussed in this 2023 AREOR.
Photo Credit: Daniel Thurston, Chemistry Supervisor, MNGP Plant Stack, used for dispersing treated gaseous effluents, Monticello Nuclear Generating Plant in Winter
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 2
1 INTRODUCTION The Radiological Environmental Monitoring Program (REMP) for the Monticello Nuclear Generating Plant (MNGP),2 located in Monticello, Minnesota, provides data on measurable levels of radiation and radioactive materials in the area surrounding the Site3 and evaluates the relationship between quantities of radioactive materials released from MNGP and the resultant doses to individuals from principal pathways of exposure.
At any given nuclear utility in the United States, REMPs are designed to provide a check on a nuclear utilitys Effluent Release Program4 and dispersion modeling to ensure that radioactive effluent concentrations in the air, terrestrial, and aquatic environments conform to the As Low As Reasonably Achievable (ALARA) design objectives of Appendix I of Chapter 10 of the Code of Federal Regulations (CFR) Part 50 (CFR, 2002).
This 2023 Annual Radiological Environmental Operating Report (AREOR) has been prepared by Arcadis U.S., Inc. and presents a summary of the environmental data from exposure pathways, interpretations of that data, along with analyses and trends of the results covering the 2023 calendar year.5 2 In this document, a distinction is made between MNGP, Site, and Plant. MNGP is the name of the facility. Site refers to the entire areal extent of MNGPs property, including the uncontrolled and controlled areas. Plant refers to the controlled area. The REMP involves monitoring and sampling at various locations across the Site and offsite locations.
3 Referred to as the Site environs.
4 The Effluent Release Program is separate but related to the REMP. Both are required by federal regulations.
5 Some of the composite samples which correspond to Quarter 4 and December 2022 extended to January 3rd 2023. These data were provided in the 2022 AREOR and are not discussed in this 2023 AREOR.
Photo Credit: Daniel Thurston, Chemistry Supervisor, MNGP Welcome to Monticello Nuclear Generating Plant
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 3
Figure 1.0-16 below illustrates various exposure pathways7 for receptors.8 Routinely monitored pathways include ingestion, inhalation, and direct radiation. Exposure pathways are based on Site-specific information, such as the locations and habitats of receptors, the ages of those receptors, and the distance and relationship of those receptors with respect to release points and water usage around MNGP. A Site-specific REMP has been developed and maintained in accordance with MNGPs Offsite Dose Calculation Manual (ODCM), NUREG-1302, and the Branch Technical Position on Radiological Environmental Monitoring.
Figure 1.0-1: Monitored Potential Exposure Pathways 6 Image Credit: Jesse R. Toepfer, © 2020.
7 An exposure pathway describes the route of the radiological exposure from a source. The primary radiological emissions from the Site are airborne discharges. The following pathways are monitored as part of MNGPs REMP: external dose, ingestion of radioactive material, and inhalation of radioactive material.
8 Living things that can be affected by radioactive effluent releases are referred to as environmental receptors.
Livestock Products
+.J\\fV\\ Direct Rad_iation Radionuchdes f Radionuclides Behavior o
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 4
1.1 Site Description and Sample Locations 1.1.1 Site Description Located in Wright County, Minnesota, MNGP is located along the Mississippi River and is approximately 40 miles northwest of the Twin Cities of Minneapolis and St. Paul. MNGP generates commercial electrical power via a boiling water reactor with a nominal generating capacity of 681 megawatts electric (MWe).
Commercial production was initiated on June 30, 1971.
1.1.2 Rationale for Sample Locations The REMP was established to assess the exposure pathways to humans. Specific methods and different environmental media are required to assess each pathway. Sampling locations for the Site are chosen based upon meteorological factors, preoperational monitoring, and results of the land use surveys. A number of sample points are selected as control locations because they are distant enough to preclude any MNGP effect, and thus, unaffected by Site operations. MNGPs REMP sampling locations and the Thermoluminescent Dosimeter (TLD) monitoring locations are discussed in Section 2 of this AREOR.
1.2 Scope and Requirements of the REMP MNGPs REMP is based on U.S. Nuclear Regulatory Commission (NRC) guidance, is conducted in accordance with MNGPs ODCM, and is furthermore guided by applicable procedures for sample media, sampling locations, sampling frequency, and analytical sensitivity requirements. Indicator and control locations were established for comparison purposes to distinguish radioactivity originating from the Plant versus that from natural or other anthropogenic9 sources. This program provides for surveillance of appropriate critical exposure pathways to man, protects vital interests of members of the public, and is intended to satisfy compliance with state and federal environmental agencies. Section 3 lists the reporting levels and sample collection frequency for detection of radioactivity in the environment.
9 An anthropogenic source refers to radioactivity from a manmade substance, as well as radioactivity from natural sources that would not otherwise normally be present in the environment either in an amount, concentration, and/or at a specified rate, without human intervention.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 5
The Annual Land Use Census, required by MNGPs ODCM, is performed to ensure changes in the use of areas at or beyond the Site boundary are identified and that appropriate modifications to the REMP are made if necessary. This census satisfies the requirements of Section IV.B.3 of Appendix I to 10 CFR Part 50 (CFR, 2002). Results are described in Section 5 of this document.
In addition, participation in an interlaboratory comparison program is performed in fulfillment of MNGPs ODCM operational requirements. The comparison program provides for independent checks on the precision and accuracy of measurements of radioactive material in REMP sample matrices. These checks are performed as part of the quality assurance (QA) program for environmental monitoring to demonstrate that the results are valid for the purposes of Section IV.B.2 of Appendix I to 10 CFR Part 50 (CFR, 2002) and Regulatory Guide 4.15 Quality Assurance for Radiological Environmental Monitoring Programs" (Regulatory, 1979). Appendix A of this 2023 AREOR summarizes the results obtained as part of this comparison program.
Photo Credit: Daniel Thurston, Chemistry Supervisor, MNGP Blooming Trees at Monticello Nuclear Generating Plant
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 6
2 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM REQUIREMENTS Figures 2.2-1 through 2.2-5 depict MNGPs REMP sampling locations and the TLD monitoring locations.
The location numbers shown on these maps correspond to locations listed in Tables 2.1-1 through 2.1-5.
Guidance for the format and layout of these tables and figures is derived from MNGPs ODCM.
2.1 Exposure Pathway and Sample Locations Table 2.1-1 below presents the sample frequency and collection based on Deposition Coefficients (D/Qs),
analysis type, and number of samples versus their locations for airborne radioiodine and particulates.
Table 2.1-1: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis: Airborne (ODCM 07.01 Table 1)
Exposure Pathway and/or Sample Number of Samples and Sample Locations**
Sampling and Collection Frequency Type and Frequency of Analysis
- 1. Airborne Radioiodine &
Particulates Samples from five locations:
three samples from offsite locations (in different sectors) of the highest calculated annual average ground level D/Q, one sample from the vicinity of a community having the highest calculated annual average ground-level D/Q, and one sample from a control location specified in Table 2.1-5.
Continuous sampler operation with sample collection weekly.
Radioiodine analysis Weekly for I-131 Particulate:
Gross beta activity on each filter weekly* Analysis SHALL be performed more than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> following filter change.
Perform gamma isotopic analysis on composite (by location) sample quarterly.
Notes:
- If gross beta activity in any indication sample exceeds 10 times the yearly average of the control sample, a gamma isotopic analysis is required.
- Sample locations are further described in Table 2.1-5.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 7
Table 2.1-2 below presents the sample frequency and collection, analysis type, and number of samples versus their locations for direct radiation.
Table 2.1-2: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis: Direct Radiation (ODCM 07.01 Table 1)
Exposure Pathway and/or Sample Number of Samples and Sample Locations**
Sampling and Collection Frequency Type and Frequency of Analysis
- 2. Direct Radiation 40 TLD stations established with duplicate dosimeters placed at the following locations:****
- 1. Using the 16 meteorological sectors as guidelines, an inner ring of stations in the general area of the site boundary is established and an outer ring of stations at a distance of 4 to 5 miles distance from the plant site is established.
Because of inaccessibility, two sectors in the inner ring are not covered.
- 2. Ten dosimeters are established at special interest areas and four control stations.
- 3. Three neutron and gamma dosimeter sets are located along the OCA fence. Additionally, three neutron dosimeters are stationed with special interest and inner ring TLDs and four neutron control dosimeters are stationed with the REMP control TLDs.
Quarterly Gamma/Neutron Dose quarterly Notes:
- Sample locations are further described in Table 2.1-5.
- Three control TLD locations have only one dosimeter.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 8
Table 2.1-3 below presents the sample frequency and collection, analysis type, and number of samples versus their locations for waterborne pathways.
Table 2.1-3: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis: Waterborne (ODCM 07.01 Table 1)
Exposure Pathway and/or Sample Number of Samples and Sample Locations**
Sampling and Collection Frequency Type and Frequency of Analysis
- 3. Waterborne
- a. Surface Water Upstream and downstream locations Monthly composite of weekly samples (water and ice conditions permitting)
Gamma Isotopic analysis of each monthly composite Tritium analysis of quarterly composites of monthly composites
- b. Groundwater Three samples from wells within 5 miles of the MNGP and one sample from a well greater than 10 miles from the MNGP Quarterly Gamma Isotopic and tritium analyses of each sample
- c. Drinking Water One sample from the City of Minneapolis water supply Composite of 2 weekly samples when I-131 analysis is performed; monthly composite of weekly samples otherwise I-131 analysis on each bi-weekly composite when the dose calculated for the consumption of the water is greater than 1 millirem (mrem) per year#
Composite for gross beta and gamma isotopic analyses monthly Composite for tritium analysis quarterly
- d. Sediment from Shoreline One sample upstream of the MNGP, one sample downstream of the MNGP, and one sample from the shoreline of the recreational area Semiannually Gamma isotopic analysis of each sample Notes:
- Sample locations are further described in Table 2.1-5.
- The dose shall be calculated for the maximum organ and age group, using the methodology and parameters in the ODCM.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 9
Table 2.1-4 below presents the sample frequency and collection, analysis type, and number of samples versus their locations for ingestion pathways.
Table 2.1-4: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis: Ingestion (ODCM 07.01 Table 1)
Exposure Pathway and/or Sample Number of Samples and Sample Locations**
Sampling and Collection Frequency Type and Frequency of Analysis
- 4. Ingestion
- a. Milk Samples from milking animals in three locations within 3 miles from the MNGP having the highest dose potential; if there are none, then one sample from milking animals in each of three areas between 3 to 5 miles from the MNGP where doses are calculated to be greater than 1 mrem per year#
One sample from milking animals at a control location, 10 to 20 miles from the MNGP and in the least prevalent wind direction Biweekly when animals are on pasture; monthly at other times Gamma Isotopic and Iodine-131 analysis of each sample
- b. Vegetation Samples of vegetation grown closest to each of the two offsite locations of highest predicted annual average D/Q if milk sampling is not performed, and one sample from 10 to 20 miles in the least prevalent wind direction Monthly during growing season Gamma Isotopic and Iodine-131 analysis of each sample
- c. Fish One sample of one game species of fish located upstream and downstream of the MNGP Samples collected semi-annually Gamma isotopic analysis on each sample (edible portion only on fish)
- d. Food Products One sample of corn and potatoes from any area that is irrigated by water in which liquid radioactive effluent has been discharged***
At time of harvest Gamma isotopic analysis of edible portion of each sample Notes:
- Sample locations are further described in Table 2.1-5.
- As determined by methods outlined in Section 2.3 of the ODCM 07.01.
- The dose shall be calculated for the maximum organ and age group, using the methodology and parameters in the ODCM.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 10 Table 2.1-5 below presents the location, code designation, and referenced collection site for a given sample type.
Table 2.1-5: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (ODCM 07.01 Table 4)
Location Type of Sample Code Collection Site Distance Miles Compass Heading Sector River water M-8c Upstream of Plant within 1,000 ft upstream of Plant intake River water M-9 Downstream of Plant within 1,000 ft downstream of Plant discharge Drinking water M-14 City of Minneapolis 37.0 132 SE Groundwater M-43c Imholte Farm 12.3 313 NW Groundwater M-11 City of Monticello 3.3 127 SE Groundwater M-12 Plant Well No. 11 0.26 252 WSW Groundwater M-55 Hasbrouck Residence 1.60 255 WSW Sediment-River M-8c Upstream of Plant within 1,000 ft upstream of Plant intake Sediment-River M-9 Downstream of Plant within 1,000 ft downstream of Plant discharge Sediment-Shoreline M-15 Montissippi Park 1.27 114 ESE Fish M-8c Upstream of Plant within 1,000 ft upstream of Plant intake Fish M-9 Downstream of Plant within 1,000 ft downstream of Plant discharge Vegetation*
M-41 Training Center Near 0.8 151 SSE Vegetation*
M-42**
Biology Station Road Near 0.7 136 SE M-42A**
Near 0.7 108 ESE Vegetation*
M-43c Imholte Farm Near 12.3 313 NW Cultivated Crops (corn)***
(potatoes)***
Notes:
- Actual location for vegetation sampling may vary depending on availability of broad leaf plant species. The nearest available broad leaf specimens to the location should be used.
- M-42 is the preferred sampling location; however, M-42A may be used in place of M-42, if samples are not available at the preferred location.
- Collected only if Plant discharges radioactive effluent into the river, then only from river irrigated fields, as determined by Section 2.1 of the ODCM 07.01.
Code letters are defined below:
c = Locations of control samples (used for control air sampler and water control sample)
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 11 Table 2.1-5: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (ODCM 07.01 Table 4) (Continued)
Type of Sample Code Collection Site Location Distance Miles Compass Heading Sector Particulates and Radioiodine (air)
M-1c Air Station M-1 11.0 307 NW (air)
M-2 Air Station M-2 0.8 140 SE (air)
M-3 Air Station M-3 0.6 104 ESE (air)
M-4 Air Station M-4 0.8 147 SSE (air)
M-5 Air Station M-5 2.6 134 SE Direct Radiation Inner Ring - (general area of the site boundary)
(TLD)
M01A Sherburne Ave. So.
0.75 353 N
(TLD)
M02A Sherburne Ave. So.
0.79 23 NNE (TLD)
M03A Sherburne Ave. So.
1.29 56 NE (TLD)
M04A Biology Station Rd.
0.5 92 E
(TLD)
M05A Biology Station Rd.
0.48 122 ESE (TLD)
M06A Biology Station Rd.
M07A Parking Lot H 0.43 157 SSE (TLD)
M08A Parking Lot F 0.45 175 S
(TLD)
M09A County Road 75 0.38 206 SSW (TLD)
M10A & ISFSI-15 (neutron)
County Road 75 0.38 224 SW (TLD)
M11A County Road 75 0.4 237 WSW (TLD)
M12A & ISFSI-14 (neutron)
County Road 75 0.5 262 W
(TLD)
M13A North Boundary Rd.
0.89 322 NW (TLD)
M14A North Boundary Rd.
0.78 335 NNW Notes:
Code letters are defined below:
A = Locations in the general area of the site boundary c = Locations of control samples (used for control air sampler and water control sample)
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 12 Table 2.1-5: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (ODCM 07.01 Table 4) (Continued)
Type of Sample Code Collection Site Location Distance Miles Compass Heading Sector Direct Radiation Outer Ring - (about 4 to 5 miles distant from the Plant)
(TLD)
M01B 117th Street 4.65 1
N (TLD)
M02B County Road 11 4.4 18 NNE (TLD)
M03B County Rd. 73 & 81 4.3 51 NE (TLD)
M04B County Rd. 73 (196th Street) 4.2 67 ENE (TLD)
M05B City of Big Lake 4.3 89 E
(TLD)
M06B County Rd 14 &
196th Street 4.3 117 ESE (TLD)
M07B Monticello Industrial Dr.
M08B Residence Hwy 25 &
Davidson Ave 4.6 162 SSE (TLD)
M09B Weinand Farm 4.7 178 S
(TLD)
M10B Reisewitz Farm - Acacia Ave 4.2 204 SSW (TLD)
M11B Vanlith Farm - 97th Ave 4.0 228 SW (TLD)
M12B Lake Maria St. Park 4.2 254 WSW (TLD)
M13B Bridgewater Sta.
4.1 270 W
(TLD)
M14B Anderson Res. - Cty Rd 111 4.3 289 WNW (TLD)
M15B Barton Ave NW 4.3 309 NW (TLD)
M16B University Ave and Hancock St, Becker 4.4 341 NNW Notes:
Code letters are defined below:
B = Locations about 4 to 5 miles distant from MNGP
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 13 Table 2.1-5: Monticello Nuclear Generating Plant Radiological Environmental Monitoring Program Sample Collection and Analysis (ODCM 07.01 Table 4) (Continued)
Location Type of Sample Code Collection Site Distance Miles Compass Heading Sector Direct Radiation - (special interest locations)
(TLD)
M01S 127th Street NE 0.66 241 WSW (TLD)
M02S & ISFSI-16 (neutron)
Krone Residence 0.5 220 SW (TLD)
M03S Big Oaks Park 1.53 103 ESE (TLD)
M04S Pinewood School 2.3 131 SE (TLD)
M05S 20500 Co. Rd 11, Big Lake 3.0 118 ESE (TLD)
M06S Monticello Public Works 2.6 134 SE (TLD)
I-11 & ISFSI-11 (neutron)
OCA Fence South, on exit road 0.31 222 SW (TLD)
I-12 & ISFSI-12 (neutron)
OCA Fence Middle, on exit road 0.32 230 SW (TLD)
I-13 & ISFSI-13 (neutron)
OCA Fence North, on exit road 0.34 240 WSW Direct Radiation Controls - (10 to 12 miles distant from Plant)
(TLD)
M01C &
Neutron Control D
Kirchenbauer Farm 11.5 323 NW (TLD)
M02C &
Neutron Control C
Cty Rd 4 & 15 11.2 47 NE (TLD)
M03C &
Neutron Control A
Cty Rd 19 & Jason Ave 11.6 130 SE (TLD)
M04C &
Neutron Control B
Maple Lake Water Tower 10.3 226 SW Notes:
Code letters are defined below:
C = Locations of control samples (used for control air sampler and water control sample)
S = Special interest locations
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 14 2.2 Maps of Sample Locations Figure 2.2-1 below illustrates the sampling locations associated with surface water, sediment, well water, air, and vegetation.
Figure 2.2-1: Radiation Environmental Monitoring Program (ODCM 07.01 Figure 1)
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2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 15 Figure 2.2-2 below illustrates the locations of the 4-to 5-mile ring and special interest TLD monitoring stations.
Figure 2.2-2: 4 - 5 Mile Ring and Special Interest TLD Locations (ODCM 07.01 Figure 2)
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 16 Figure 2.2-3 below illustrates the locations of site boundary TLD monitoring stations.
Figure 2.2-3: Site Boundary TLD Locations (ODCM 07.01 Figure 3)
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 17 Figure 2.2-4 below illustrates the control sample locations.
Figure 2.2-4: Control Locations (ODCM 07.01 Figure 4)
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 18 Figure 2.2-5 illustrates the ISFSI TLD locations.
Figure 2.2-5: ISFSI TLD Locations (ODCM 07.01 Figure 5)
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2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 19 3
STATISTICAL AND CALCULATIONAL METHODOLOGY 3.1 Trend Identification The REMP is not only intended to determine levels of radionuclides in the environment associated with MNGPs operations, but to evaluate trends in those levels over a period of time. If the data indicate a trend in the concentration of a radionuclide in an environmental medium, it could indicate that reactor operations are causing that particular radionuclide to fluctuate in the environment. Understanding effluent releases from MNGP is necessary to identify and interpret trends (or lack of trends) based on environmental data.
Factors that may affect environmental levels of radionuclides include prevailing weather conditions (e.g.,
periods of drought, solar cycles, and extreme precipitation events) and construction activities in close proximity to MNGP of a given sampling location.10 Some of these factors may be obvious, such as, the increase of airborne particulate beryllium-7 concentration due to atmospheric mixing or increase of surface water tritium due to atmospheric deposition from heavy precipitation events, while others are sometimes unknown.
In some cases, a Mann-Kendall trend test was used to determine whether a statistically significant trend is apparent in a dataset. Mann-Kendall tests were conducted at a 95 percent confidence level using ProUCL Version 5.2 (Barnett et al., 2022).
3.2 Estimation of the Mean Value A widely used statistical calculation was performed on the raw data collected under the sample analysis program. The calculation involved determining the mean value for the indicator and control samples for each sample medium. The mean value was used in the reduction of the data generated by the sampling and analysis of the various media in the REMP. Net activity (or concentration)" is the activity (or concentration) determined to be present in the sample. No minimum detectable activity (or concentration),
lower limit of detection, less than level, or negative activities or concentrations are included in the calculation of the mean. Equation 1 below was used to calculate the estimated mean. The estimated mean is equal to the sum of all the individual sample values, beginning with the first sample, divided by the total number of samples.
x
=
N xi i = 1 N
(Equation 1)
Where:
x = estimate of the mean i = individual sample N = total number of samples with a net activity (or concentration) xi = net activity (or concentration) for sample i 10 Additionally, from time to time, the trends may be affected by statistical additions or exclusions of known sources of radioactive material. For instance, there is a measurable amount of radioactivity attributable to the 1986 Chernobyl accident and the 2011 Japan earthquake and tsunami, which triggered the Fukushima Dai-ichi Nuclear Power Plant incident. It is important to note whether these factors are being accounted for, as they affect radiological environmental measurements, even though they are not attributable to MNGP.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 20 When mean values are proceeded by a "+/-" value in the text, the +/- value represents the standard deviation of the individual values used to estimate the mean.
3.3 Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) and minimum detectable concentration (MDC) are used throughout the REMP and are defined as follows.
x LLD is defined in the ODCM as the smallest concentration of radioactive material in a sample that will yield a net count above the system background that will be detected with 95 percent probability; i.e.,
only a 5 percent probability of falsely concluding that a blank observation represents a real signal.
The LLD is an a priori (i.e., before the fact) measurement. The actual LLD is dependent upon the standard deviation of the background-counting rate, the counting efficiency, the sample size (mass or volume), the radiochemical yield, and the radioactive decay of the sample between sample collection and counting. The required LLDs for each sample medium and selected radionuclides are provided in the ODCM and listed in Table 3.4-2.
x MDC is the net counting rate (sample after subtraction of background) that must be surpassed before a sample is considered to contain a scientifically measurable amount of a radioactive material exceeding background amounts. The MDC is calculated using a sample background and may be thought of as an "actual" LLD for a particular sample measurement.
Certain gross counting measurements display a calculated negative value, indicating background is greater than sample activity. In these instances, it does not mean that radioactivity is removed from the environment. Instead, the measurement errors associated with the radiochemical analysis have fluctuated causing the background count rate to be greater than the sample count rate.
3.4 Reporting Levels and Lower Limits of Detection for Radioactivity Reporting levels and LLDs for activity found in environmental samples are listed in Table 3.4-1 and Table 3.4-2. Required REMP sample analyses and their frequencies are listed in Table 3.4-3.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 21 Table 3.4-1: Reporting Levels for Radioactivity Concentrations in Environmental Samples (ODCM 07.01 Table 2)
Analysis Water (pCi/L)
Airborne Particulate or Gas (pCi/m3)
Fish (pCi/kg, wet)
Milk (pCi/L)
Vegetables (pCi/kg, wet)
Tritium (H-3) 20,000a Manganese-54 (Mn-54) 1,000 30,000 Iron-59 (Fe-59) 400 10,000 Cobalt-58 (Co-58) 1,000 30,000 Cobalt-60 (Co-60) 300 10,000 Zinc-65 (Zn-65) 300 20,000 Zirconium-95 and Niobium-95 (Zr-Nb-95) 400b Iodine-131 (I-131) 2c 0.9 3
100 Cesium-134 (Cs-134) 30 10 1,000 60 1,000 Cesium-137 (Cs-137) 50 20 2,000 70 2,000 Barium-140 and Lanthanum-140 (Ba-La-140) 200b 300b Notes:
a For drinking water samples. This is a 40 CFR Part 141 (CFR, 1975) value. If no drinking water pathway exists, a value of 30,000 pCi/L may be used.
b Total for parent and daughter product.
c If no drinking water pathways exist, a value of 20 pCi/L may be used.
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2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 22 Table 3.4-2: Maximum Values for the Lower Limits of Detection (LLD) (ODCM 07.01 Table 3)
Analysis Water (pCi/l)
Airborne Particulate or Gas (pCi/m3)
Fish (pCi/kg, wet)
Milk (pCi/L)
Food Products (pCi/kg, wet)
Sediment (pCi/kg, dry)
Gross beta 4
0.01 Tritium (H-3) 2000a Manganese-54 (Mn-54) 15 130 Iron-59 (Fe-59) 30 260 Cobalt-58 and Cobalt-60 (Co-58, 60) 15 130 Zinc-65 (Zn-65) 30 260 Zirconium-95 and Niobium-95 (Zr-Nb-95) 15b Iodine-131 (I-131) 1c 0.07 1
60 Cesium-134 (Cs-134) 15 0.05 130 15 60 150 Cesium-137 (Cs-137) 18 0.06 150 18 80 180 Barium-140 and Lanthanum-140 (Ba-La-140) 15b 15b Notes:
a If no drinking water pathway exists, a value of 3000 pCi/L may be used.
b The specified LLD applies to the daughter nuclide of an equilibrium mixture of the parent and daughter nuclides.
Per the Radiological Assessment Branch Technical Position (BTP), the following values may be used for individual nuclide LLDs when equilibrium conditions are not met: 30 pCi/L for zirconium-95, 15 pCi/L for niobium-95, 60 pCi/L for barium-140, and 15 pCi/L for lanthanum-140.
c If no drinking water pathway exists, a value of 15 pCi/L may be used.
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2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 23 Table 3.4-3: Analysis and Frequency of Samples Pathway Sample Location Type I-131 Gross Beta Gamma Isotopic Tritium Gamma Dose Airborne Particulate and Radioiodine M-1 Air Station M-1 Control W
W Q1 M-2 Air Station M-2 W
W Q1 M-3 Air Station M-3 W
W Q1 M-4 Air Station M-4 W
W Q1 M-5 Air Station M-5 W
W Q1 Direct Radiation M01C to M04C Control Q
M01A to M14A Q
M01B to M16B Q
M01S to M06S Q
I-11 to 1-13 Q
Waterborne: River Water M-8c Upstream of MNGP Control M1 Q1 M-9 Downstream of MNGP M1 Q1 Waterborne: Groundwater M-43c Imholte Farm Control Q
Q M-11 City of Monticello Q
Q M-12 Plant Well No. 11 Q
Q M-55 Hasbrouck Residence Q
Q Waterborne: Drinking Water M-14 City of Minneapolis BW1,2 M1 M1 Q1 Waterborne: Sediment M-8c Upstream of Plant Control SA M-9 Downstream of Plant SA M-15 Montissippi Park SA Ingestion: Milk M/BW3,4 M/BW3,4 Ingestion: Vegetation M-43c Imholte Farm Control M5 M5 M-41 Training Center M5 M5 M-42 Biology Station Road M5 M5 Ingestion: Fish M-8c Upstream of Plant Control SA M-9 Downstream of Plant SA Ingestion: Food Products A3 Notes:
1 Composite of weekly samples.
2 Iodine-131 analysis included on each bi-weekly composite when the dose from the consumption of the water is greater than 1 mrem/year. (ODCM 07.01 Revision
- 27) 3 This pathway is currently unavailable at MNGP.
4 Every two weeks when animals are on pasture; monthly at other times.
5 During growing season when milk samples are unavailable.
W = weekly BW = every two weeks M = monthly Q = quarterly SA = semi-annually A = annually
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 24 4
INTERPRETATION OF RESULTS 4.1 Airborne Radioiodine and Particulates The average annual gross beta11 concentrations in airborne particulates were similar at the indicator (0.040 +/-
0.019 picocuries per cubic meter (pCi/m3) for 2023) and control locations (0.040 +/- 0.014 pCi/m3 for 2023).
In the 2022 AREOR, Mann-Kendall tests were conducted on the air particulate data from 2009 to 2022 for control and indicator locations. The data from 2009 to 2022 showed a statistically significant increasing trend at a 95 percent confidence level; however, because this trend was observed with the control and indicator samples, the trend was not due to plant impact. In 2023, the control and indicator results were lower than the 2021 and 2022 results, and the Mann-Kendall test was not updated in 2023. The results are graphed below in Figure 4.1-1.
Figure 4.1-1: Graph of Historical Airborne Particulate Gross Beta 11 Gross beta is a measurement of all beta activity present, regardless of specific radionuclide source. Beta particles are physically identical to electrons, but they are differentiated by their source (beta particles are created in the nucleus during certain types of nuclear transformations, whereas electrons come from the electron cloud surrounding the nucleus). Beta particles can have various states of energy.
0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 0.080 0.090 0.100 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Annual Average Gross Beta (pCi/m3)
Years Airborne Particulate Annual Average Gross Beta Control Indicators
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 25 Figure 4.1-2 shows the average indicator gross beta from the four indicator locations (Air Station locations M-2, M-3, M-4, M-5) versus the control location (Air Station M-1) in 2023.12,13 The error bar represents the statistical uncertainty, as 1.96 sigma (V) (95% confidence), associated with each measurement for a given sample collection date. Despite the variability of gross beta activity in airborne particulates, the average results from the indicator locations were similar to the results from the control location.
Figure 4.1-2: Graph of 2023 Average Airborne Particulate Gross Beta for Indicator and Control Locations Mixing of the upper and lower atmospheres can transport suspended particles and beryllium-714 from the upper atmosphere to the lower atmosphere, which can increase the airborne particulate gross beta in the lower atmosphere. Gamma spectroscopic analysis of quarterly composites of air particulate filters yielded similar results for indicator and control locations. Beryllium-7 was detected in all samples, with an average activity of 0.070 +/- 0.015 pCi/m3 for the control locations, and 0.070 +/- 0.018 pCi/m3 for the indicator locations.
All other gamma-emitting isotopes were below their respective LLD limits.
The weekly levels of airborne radioiodine-131 were below the LLD for the airborne radioiodine cartridge samples analyzed. There was no indication of an emission of radioiodine from MNGP.
12 For the week of 10/4/2023, a partial value was recorded at Air Station M-4. Since this value was counted as a missed sample, it was not included in the average. The missed sample is discussed further in Section 7.4 (Condition Report 501000077354).
13 The 3/1/2023 samples at locations M-1, M-2, M-3, and M-4 and the 3/15/2023 sample taken at location M-1 were found with torn filters. Considered missed samples due to possibility of a partial sample (Condition Report 501000071013). See Section 7.4.
14 Beryllium-7 can be created in the upper atmosphere by cosmic radiation and solar flares (Arnold & Al-Salih, 1955).
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2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 26 4.2 Drinking Water Tritium activity was measured below the detection limit for all samples. Gamma isotopic results were also below detection limits for all samples. Gross beta results were below detection limits for all samples. Gross beta averages are shown on Figure 4.2-1. There was no indication of an effect from MNGP. Because each measurement was below its respective LLD value, the annual dose for drinking water was assumed to be less than 1 mrem/year, and therefore iodine-131 analyses were not conducted in 2023 per ODCM 07.01 Revision 27.
Figure 4.2-1: Graph of Historical Gross Beta for Drinking Water Sample 4.3 River Water River water was analyzed from samples both upstream and downstream of MNGP. Tritium activity was measured below the detection limit for all samples. MNGP is reporting an abnormal discharge of tritium to the river during the 2023 reporting period after samples at monitoring wells near the Mississippi River were positive for tritium. A total of 0.167 Ci was estimated with modeling done by MNGPs groundwater vendor.
For full details, see the Monticello 2023 ARERR.
Barium-140 was detected at a value of 321 +/- 344 pCi/L in the M-9 January 2023 sample. Although this value was below the measured (laboratory-established) MDC of 607 pCi/L, it was above the LLD of 60 pCi/L, and therefore it was not assigned a U flag. Although this value is above the reporting level of 200 pCi/L (Table 3.4-1), the quarterly average including February and March values (which were below the LLD) is below 200 pCi/L. ODCM 07.01 (Section 2.1.3 C.) states that the results need to be reported to the Commission within 30 days if they exceed the reporting level in Table 3.4-1 when averaged over any calendar quarter.
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2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 27 4.4 Groundwater Tritium and gamma isotopic results were below the detection limit for all samples taken. The data for 2023 were consistent with the previous years results and no MNGP operational effects were indicated.
4.5 Broadleaf Vegetation Vegetation samples were collected during the growing season of June15, July, August, and September 2023. Gamma isotopic and iodine-131 concentrations were measured below the detection limit in all analyzed samples. These samples are required when milk samples are not available.
4.6 Food Products Corn and potato samples were not required for 2023. There were no crops within five miles (mi) of MNGP irrigated using water from the Mississippi River.
15 June samples were not analyzed. See Condition Report 501000075372 in Section 7.4.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 28 4.7 Fish Fish were analyzed in 2023, including two fish species collected from upstream locations and two collected from downstream locations in June. In September, one fish species was collected from upstream and downstream locations due to water levels in the river being too low for electrofishing. One sample of one game species of fish located upstream and downstream of site is required semi-annually per the ODCM (ODCM 07.01). Shorthead redhorse and smallmouth bass were collected from each location in June, and smallmouth bass were collected from each location in September. Gamma spectroscopy was performed on the edible portion of the fish. Only potassium-40, which is a common radioisotope found in nature and would not be associated with MNGP activities, was found with an average of 3.55 +/- 0.38 picocuries per gram (pCi/g) wet weight for the four upstream samples and 2.48 +/- 0.38 pCi/g wet weight for the four downstream samples. These results are consistent with historical results. Other gamma-emitting isotopes remained below detection limits. There were no gamma emitting radionuclides attributable to MNGP operations identified in any of the 2023 fish samples.
Canada Goose and Goslings Crossing Near an MNGP Radiological Environmental Sampling Point Photo Credit: Darin Jensen, Senior Design Engineer, MNGP
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 29 4.8 Shoreline Sediment Shoreline sediments were collected from three locations: upstream, downstream, and downstream-recreational. Similar levels of activity have been observed since 1996 (see Figure 4.8-1) and are indicative of the influence of fallout deposition from above ground nuclear weapons testing. Levels of cesium-137 in sediments are observed to fluctuate as silt distributions shift due to natural erosion and transport processes.
Naturally occurring beryllium-7 and potassium-40 were also detected. There was no indication of a MNGP effect.
Figure 4.8-1: Graph of Historical Cesium-137 in River Sediment 0.5
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2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 30 4.9 Direct Gamma Radiation 4.9.1 Environmental TLD Direct gamma radiation was measured in the general area of the Site boundary, at the inner ring, at an outer ring 4 to 5 miles from the Plant, at special interest areas, and at four control locations using TLDs. On average, the quarterly TLD measurements (where one standard [std] quarter is a 91-day period) were similar for both inner and outer rings, at 14.2 and 13.7 millirem (mrem)/standard quarter (std quarter),
respectively.16 The mean for special interest locations was 13.8 mrem/std quarter and the mean for the control locations was 12.5 mrem/std quarter. Figure 4.9.1-1 shows the average measured dose from each std quarter.17 The error bars represent the statistical uncertainty associated with each average measurement.
Figure 4.9.1-1: Graph of Direct Gamma Radiation Measurements 16 The TLD at M-11A was left in place for two consecutive quarters (Q1 and Q2). The laboratory results were normalized according to the actual time left in place, and the same TLD value was applied to Q1 and Q2. See Condition Report 501000072555 in Section 7.4.
17 4th Quarter TLD M01A result was higher than baseline for this area by 10.2 mrem. This high result is likely due to construction in the area. See Condition Report 501000082357 in Section 7.4.
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2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 31 Dose rates measured at the inner and outer ring locations in 2023 were similar to those observed from 1999 through 2022 and are shown in Figure 4.9.1-2. No MNGP effect on ambient gamma radiation is indicated.
Figure 4.9.1-2: Graph of Historical Direct Gamma Measurements 4.9.2 ISFSI TLD Gamma and Neutron TLDs are located around the Independent Spent Fuel Storage Installation (ISFSI) to monitor direct radiation from stored fuel for trending purposes. The ISFSI TLDs are not considered true REMP TLDs and are not representative of the dose to members of the public. Results for monitoring are included in Section 10.
No additional spent fuel casks were moved to the ISFSI in 2023. Annual data trends at and in the vicinity of the ISFSI are consistent with expectations. There were no detectable dose rate increases observed at the Site boundary TLDs in 2023.
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2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 32 5
LAND USE CENSUS 5.1 Purpose The Land Use Census identifies the pathways (or routes) by which radioactive material may reach the general populations near commercial nuclear generating stations. This is accomplished by completing studies each year that identify how the surrounding lands are used by the population. A comprehensive census of the use of the land within a five-mile distance of the Plant is completed during the growing season each year. This information is used for dose assessment and to identify changes to the stations sampled and the type of samples. Therefore, the purpose of the Land Use Census is to ensure the REMP is current based on human activity near MNGP, as well as to provide data for the calculation of estimated radiation exposure.
Photo Credit: Darin Jensen, Senior Design Engineer, MNGP Woodchuck Near an MNGP Radiological Environmental Sampling Point
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 33 The pathways evaluated are:
x Ingestion Pathway - Results from eating food crops that may have radioactive materials deposited on them or may have taken up radioactive materials from the soil or atmosphere. Another potential pathway is through drinking milk or eating cheese from local cows or goats. The vegetation used to feed these animals may include radioactive material due to deposition or uptake from soil and the radioactivity transferred to the milk. If milk animals are not present, vegetation is collected in lieu of milk.
x Direct Radiation Exposure Pathway - Results from deposition of radioactive materials on the ground or from passage of these radioactive materials in the air.
x Inhalation Pathway - Results from breathing radioactive materials transported in the air.
5.2 Methodology The following must be identified within a five-mile radius of the Plant for each of the sixteen meteorological sectors (i.e., compass heading) for potential wind direction; for example, North-Northeast (NNE):
x The nearest resident x
The nearest garden of greater than 500 square feet (ft2) producing broadleaf vegetables ("Garden")
x The nearest animal used for meat consumption ("Meat")
x The nearest milk-producing animal ("Milk")
The 2023 survey was performed using door-to-door surveys and visual observations while driving; additionally, inputs from the 2022 field data forms were used to evaluate changes to the land use. Google Earth Pro satellite imagery and the Homeland Security Emergency Management Monticello Basemap were used in determining changes in land use. Data were collected using a combination of the Spyglass App and Google Earth Pro, using a universal serial bus (USB) global positioning system (GPS) receiver. Google Earth Pro was used to determine receptor location distances and sectors; these results were used in determining dispersion parameters for dose calculations. Distance, direction, and dose pathway information is used to determine if any sampling locations need to be changed in the REMP sampling program and for determining Critical Receptor data.
5.3 2023 Land Use Census The 2023 Land Use Census was conducted between September 6th 2023, and September 30th 2023, by the REMP Program Owner in accordance with MNGPs Chemistry Manual, Procedure I.05.41, Annual Land Use Census and Critical Receptor Identification (MNGP, n.d.).
There were 10 sectors that had an increase in the nearest garden D/Q of greater than 20 percent compared to 2022.18 A new garden was identified in the SE Sector which is the new highest in the region. This garden also had the highest D/Q. The highest D/Q garden for 2023 is now in sector SE at 1.1 miles from MNGP.
18 ODCM-APP-A was updated with dispersion and deposition parameters using data from 2016-2020. This resulted in most sectors having changes to D/Q values above 20%.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 34 In 2023, there were four sectors where the highest Meat Animal D/Q values increased by 20 percent. There were no new meat animals identified that were the highest in their respective sector.
The WSW sector remains the sector with the highest D/Q for meat animals.
There were eight sectors in which the highest D/Q values for the nearest resident increased by more than 20 percent in 2023. The highest D/Q resident remains at 0.99 miles from the Plant in the SSE sector.
Three of six previously identified Meat and Garden receptors had their D/Q increase by more than 20%. No new Meat and Garden receptors were identified.
Since 2019, one milk cow has been located at 3.25 miles from MNGP in the NNE sector. The animal is infrequently milked and only provides enough for the family usage. The owner indicated that the cow had birthed a calf that will eventually be milked as well. There is also a beef cow at the location. Due to the relativity low deposition, the calculated dose at this location is lower than the vegetation sample locations.
Milk samples are required for three locations within 3 miles or three locations where doses are calculated to be greater than 1 mrem/year (ODCM 07.01). The identified Milk animal is greater than 3 miles from the site, and the dose from all pathways at that location is 0.0265 mrem/year to the infant thyroid. Thus, vegetation sampling was performed in lieu of milk sampling.
There are no crops being irrigated from the Mississippi River within five miles downstream of the Plant, based upon the most recent Water Use Resources Permit Index Report from the Minnesota Department of Natural Resources. The nearest downstream drinking water supplies drawn from the Mississippi River remain St. Paul and Minneapolis water supplies as currently documented in the ODCM and Updated Final Safety Analysis Report.
Pigs identified 3.43 miles away from the plant Photo Credit: Matt Mcclannahan, Senior Chemist, MNGP
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 35 The highest D/Q location for each pathway is described in Table 5.3-1.
Table 5.3-1: Summary of Highest Location for Each Pathway in 2023 Pathway Sector Distance (mi)
D/Q Resident SSE SW 0.99 0.52 1.20E-08 1.20E-08 Meat WSW 1.77 1.00E-09 Meat + Garden W
1.82 1.10E-09 Garden SE 1.11 7.30E-09 Milk1 NNE 3.24 4.40E-10 Crops Notes:
1 Vegetation performed in lieu of Milk sampling.
Doses due to ground plane, inhalation, and ingestion of vegetables and meat, were calculated for the highest D/Q Resident, Meat, Garden, and combined Meat and Garden locations identified in the 2023 Land Use Census. In accordance with the ODCM, the long-and short-duration gaseous releases from the Reactor Building Vent and the Off-gas Stack for the previous calendar year were used as the source terms.
Doses were calculated using the RADEAS computer program with the 2022 Annual Effluent Data report source term as input. This year the ODCM-APP-A was updated with MET data from 2016-2020. This resulted in a new critical receptor being identified. The location is a residential garden located 1.11 miles in the SE receptor (designated GG) and the pathway identified is the combined plane, inhalation, and vegetable ingestion to the thyroid of the child age group. ODC 616000000080 has been generated to update ODCM 07.01 with the new critical receptor. For the purposes of compliance with 10 CFR 50 Appendix I, the critical receptor is defined as a child at this location with dose calculated to the thyroid. The dose for this receptor is estimated at 0.0480 mrem/year.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 36 6
QUALITY ASSURANCE 6.1 Sample Collection MNGP personnel performed the environmental sample collections as specified by approved sample collection procedures.
6.2 Sample Analysis General Engineering Laboratories, LLC (GEL) performed the environmental sample analyses as specified by approved analysis procedures. GEL is located in Charleston, South Carolina.
6.3 Dosimetry Analysis Environmental Dosimetry Company (EDC) works in conjunction with Stanford Dosimetry to perform the environmental dosimetry measurements as specified by approved dosimetry analysis procedures. The Environmental TLD program at EDC provides Panasonic TLD badges containing calcium sulfate (CaSO4) phosphor elements for posting in the field. The raw TLD results are corrected for individual element sensitivity and reader sensitivity as determined by the quality control results. Control dosimeters are used to determine the background radiation exposure during the shipment and serve to evaluate transit exposures. The transit exposures are subtracted from the field dosimeters. Since the measured signal fades from the time of exposure to analysis, the fade of the thermoluminescent response is corrected.
6.4 Laboratory Equipment Quality Assurance 6.4.1 Daily Quality Control GEL has an internal QA program which monitors each type of instrumentation for reliability and accuracy.
Daily quality control checks ensure that instruments are in proper working order, and these checks are used to monitor instrument performance.
6.4.2 Calibration Verification National Institute of Standards and Technology (NIST) standards that represent counting geometries are analyzed as unknowns at various frequencies, ranging from weekly to annually, to verify that efficiency calibrations are valid. The frequency is dependent upon instrument use and performance. Investigations are performed and documented should calibration verification data fall outside of the acceptable limits.
6.5 General Engineering Laboratory, LLC GEL participated in various QA programs for inter-laboratory, intra-laboratory, third-party cross check programs, and a number of proficiency testing programs during 2023. A summary of the GEL QA program results for the sample media types sent to GEL during 2023 is documented in Appendix A.
The standard operating procedures used by GEL are approved methods. Copies of GELs accreditations and certifications are available on their website, www.gel.com.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 37 6.6 Environmental Dosimetry Company EDC participates in an internal performance acceptance criteria and a quarterly independent testing TLD intercomparison program. In 2023, 100 percent of the individual dosimeters passed the performance criteria. A summary of the 2023 EDC Annual Quality Assurance Status Report is documented in Appendix B.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 38 7
ENVIRONMENTAL SAMPLING MODIFICATIONS 7.1 Program Modifications There were no programmatic changes to environmental sampling in 2023.
7.2 Change of Sampling Procedures There were no changes to sampling procedures in 2023.
7.3 Change of Analysis Procedures There were no changes to the analysis procedures in 2023.
7.4 Sample Deviations and Unavailable Analyses Table 7.4-1 lists the deviations from the required REMP sample collection in 2023. Despite these sample deviations, 98.8 percent of the required samples were successfully obtained and analyzed.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 39 Table 7.4-1: Sample Deviations and Unavailable Analyses Sample Type Analysis Location Collection Date or Period Reason for not conducting REMP as required Corrective Action Condition Report Direct Radiation Gamma Dose M07A Q1 TLD went through X-ray machine in security.
Notified vendor at Standford Dosimetry.
Documented in case abnormal results reported.
501000069793 River Water Gamma Isotopic M-8 Jan, Feb 20231 Unsafe condition for sampling due to frozen river surface.
Sample obtained when water thawed.
501000069833 Direct Radiation Gamma Dose M13A Q1 TLD was attached to a power pole that was replaced.
TLD and holder missing.
Updated DAR 603000007937 with this CAP number for tracking.
501000072135 Direct Radiation Gamma Dose M06B Q1 Sampler was likely struck by snow removal equipment. TLD and holder missing.
Updated DAR 603000007937 with this CAP number for tracking.
501000072135 Airborne Particulate Gross Beta and Radioiodine M-1 M-2 M-3 M-4 Week of 3/1/2023 Filters appeared damaged on collection.
Damage likely due to heavy rain and snow.
Declaring as missed sample due to possibility of partial sample.
Increased monitoring of air filters surrounding precipitation events. Ensured tears were not caused by faulty manufacturing.
501000071013 Airborne Particulate Gross Beta and Radioiodine M-1 Week of 3/15/2023 Filters appeared damaged on collection.
Damage likely due to heavy rain and snow.
Declaring as missed sample due to possibility of partial sample.
Increased monitoring of air filters surrounding precipitation events. Ensured tears were not caused by faulty manufacturing.
501000071013 Notes:
1 January and February samples could not be collected, but samples were collected in March. The quarterly composite for tritium therefore only includes March.
I I
I I
I I
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 40 Sample Type Analysis Location Collection Date or Period Reason for not conducting REMP as required Corrective Action Condition Report Direct Radiation Gamma Dose M-11A Q2 TLD not collected during quarterly TLD changeout.
Contacted vendor, TLD remained posted for two quarters. Vendor indicated TLDs posted for two quarters get a good result, this is not a missed sample.
501000072555 Vegetation Gamma Isotopic and Radioiodine M-43 M-41 M-42 Jun 2023 June samples were not shipped to the lab within required hold time.
Informed supervision, provided coaching to warehouse staff to prevent a reoccurrence, and wrote CAP.
501000075372 Airborne Particulate Gross Beta and Radioiodine M-4 Week of 10/4/2023 Blown fuse caused sampler pump to fail.
Partial sample collected but is considered a missed sample.
Replaced blown fuse and filter set for next sample collection period.
501000077354 Direct Radiation Gamma Dose M01A Q4 REMP conducted as required; a condition report was prepared noting abnormal sample result.
Q4 result was 10.2 mRem above quarterly baseline for this area.
Contacted vendor to verify result.
Vendor confirmed no analysis errors but suggested construction in the area may contribute to abnormally high results.
501000082357 I
I I
I I
I
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 41 7.5 Analytical Deviations The ODCM 07.01 Table 3 LLD values for the parent-daughter isotopic pair barium-140/lanthanum-140 are 60 pCi/L and 15 pCi/L, respectively (see Table 3.4-2). Of the 50 groundwater, surface water, and drinking water samples collected in 2023, the LLD was not satisfied in six of the barium-140/lanthanum-140 samples (12%). In each sample, the MDC was higher than the LLD. The cause of the deviation was largely due to the time period between sample analysis and sample collection. A delay in the analysis of the sample by the laboratory, coupled with short radiochemical half-life, caused the deviations. Table 7.5-1 below details the analytical deviations.
Table 7.5-1: Analytical Deviations Location Collect Date/Time Analysis Date/Time Isotope Result (pCi/L)
ODCM 07.01 Table 3 Required LLD (pCi/L)
Minimum Detectible Concentration (MDC)
(pCi/L)
M-8 Upstream of Plant 8/30/2023 10:36 10/16/2023 19:33 La-140 3.42 U 15 23.7 Ba-140
-9.89 U 60 63.8 11/29/2023 11:20 1/10/2024 10:05 La-140
-3.61 U 15 15.6 M-9 Downstream of Plant 1/24/2023 10:40 4/26/2023 10:37 La-140
-103 U 15 195 Ba-140 321 60 607 2/21/2023 8:22 4/25/2023 16:28 La-140
-8.62 U 15 69.2 Ba-140
-26.2 U 60 213 8/30/2023 9:55 10/16/2023 19:32 La-140 2.73 U 15 21.7 Ba-140 29.2 U 60 64.1 11/29/2023 11:00 1/10/2024 9:53 La-140
-0.558 U 15 15.6 Notes:
U qualifier indicates that the analyte was analyzed for, but not detected above the MDC.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 42 8
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM -
SUMMARY
OF RESULTS This section presents a summary of MNGPs REMP sampling and monitoring results for the 2023 period for airborne particulates, airborne radioiodine, direct radiation, and measurable radioactivity in milk, broadleaf vegetation, river water, shoreline sediments, groundwater, drinking water, and fish. In all, there were no reported non-routine measurements.
8.1 Radiological Environmental Monitoring Program Data Summary Table 8.1-1 below presents the summary of MNGPs REMP sampling and monitoring results for the 2023 period.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 43 Table 8.1-1: Radiological Environmental Monitoring Program Summary Medium or Pathway Sampled (Units)
Type, Total Number of Analyses performed ODCM Table 3 Lower Limit of Detection (LLD)
Indicator Mean1 Location with Highest Annual Mean Control Mean1 (f)2 Number of Nonroutine Reported Measurements Name Mean1 Range1 (e.g. I-131, 400)
(f)2 Distance and Direction (f)2 Range1 Range1 Airborne Particulates (pCi/m3)
Gross Beta (259) 0.01 0.040 (207/207) 0.015 - 0.213 M-1, Air Station 11.0 m @
307/NW M-5, Air Station 2.6 m @
134/SE 0.040 (52/52) 0.020-0.074 0.040 (52/52) 0.022 - 0.093 0.040 (52/52) 0.020-0.074 0
Gamma (20)
Be-73 Mn-54 Co-58 Co-60 Zn-65 Zr-Nb-95 Ru-103 Ru-106 Cs-134 Cs-137 Ba-La-140 Ce-141 Ce-144 0.05 0.06 0.070 (16/16) 0.048 - 0.103
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD M-3, Air Station 0.6 m @
104/ESE 0.074 (4/4) 0.062 - 0.100 0.070 (4/4) 0.055 - 0.091
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 0
Airborne Radioiodine (pCi/m3)
I-131 (260) 0.07
<LLD
<LLD 0
Broadleaf Vegetation (pCi/kg-wet)
Gamma (12)
Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-Nb-95 I-131 Cs-134 Cs-137 60 60 80
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 0
Notes:
1 Mean and range are based upon detectible measurements only.
2 (f) Fraction of detectible measurements at a specific location.
3 Natural and not due to Plant influence.
Name of Facility:
Monticello Nuclear Generating Plant Docket No:
50-263 Location of Facility:
Wright, Minnesota Reporting Period January - December 2023
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 44 Table 8.1-1: Radiological Environmental Monitoring Program Summary (Continued)
Medium or Pathway Sampled (Units)
Type, Total Number of Analyses performed ODCM Table 3 Lower Limit of Detection (LLD)
Indicator Mean1 Location with Highest Annual Mean Control Mean1 (f)2 Number of Nonroutine Reported Measurements Name Mean1 Range1 (e.g. I-131, 400)
(f)2 Distance and Direction (f)2 Range1 Range1 Milk (pCi/L)
I-131 (0) 1 N/A N/A N/A N/A 0
Gamma (0)
N/A N/A N/A N/A N/A 0
Fish (pCi/kg-wet)
Gamma (8)
K-403 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-Nb-95 Cs-134 Cs-137 Ba-La-140 Ce-144 130 260 130 130 260 130 150 2744 (4/4) 3460 - 3640
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD M-8 Upstream of Plant 3550 (3/3) 3700 - 3730 3550 (3/3) 3700 - 3730
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 0
Shoreline Sediments (pCi/kg-dry)
Gamma (6)
Be-73 K-403 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-Nb-95 Cs-134 Cs-137 Ba-La-140 Ce-144 150 180 1090 (1/4) 1090 - 1090 11160 (4/4) 9740 - 13100
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD M-15 Montissippi Park M-15 Montissippi Park 1090 (1/2) 1090 - 1090 11420 (2/2) 9740 - 13100
- (0/2) 10150 (2/2) 10100 -
10200
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 0
Drinking Water (pCi/L)
Gross Beta (12) 4
<LLD None 0
Notes:
1 Mean and range are based upon detectible measurements only.
2 (f) Fraction of detectible measurements at a specific location.
3 Natural and not due to Plant influence.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 45 Table 8.1-1: Radiological Environmental Monitoring Program Summary (Continued)
Medium or Pathway Sampled (Units)
Type, Total Number of Analyses performed ODCM Table 3 Lower Limit of Detection (LLD)
Indicator Mean1 Location with Highest Annual Mean Control Mean1 (f)2 Number of Nonroutine Reported Measurements Name Mean1 Range1 (e.g. I-131, 400)
(f)2 Distance and Direction (f)2 Range1 Range1 Drinking Water (pCi/L)
Gamma (12)
Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-Nb-95 Cs-134 Cs-137 Ba-La-140 Ce-144 15 30 15 15 30 154 15 18 154
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD6
<LLD None None None None None None None None None None 0
I-131 (0) 1 None 0
Tritium (4) 2000
<LLD None 0
Groundwater (pCi/L)
Gamma (16)
Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-Nb-95 Cs-134 Cs-137 Ba-La-140 Ce-144 15 30 15 15 30 154 15 18 154
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 0
I-1316 (0) 15
<LLD
<LLD 0
Tritium (4) 2000
<LLD
<LLD 0
Notes:
1 Mean and range are based upon detectible measurements only.
2 (f) Fraction of detectible measurements at a specific location.
4 The specified LLD applies to the daughter nuclide of an equilibrium mixture of the parent and daughter nuclides. Per the BPT, the following values may be used for individual nuclide LLDs when equilibrium conditions are not met: 30 pCi/L for zirconium-95, 15 pCi/L for niobium-95, 60 pCi/L for barium-140, and 15 pCi/L for lanthanum-140.
5 If no drinking water pathway exists, a value of 15 pCi/L may be used.
6 Not required.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 46 Table 8.1-1: Radiological Environmental Monitoring Program Summary (Continued)
Medium or Pathway Sampled (Units)
Type, Total Number of Analyses performed ODCM Table 3 Lower Limit of Detection (LLD)
Indicator Mean1 Location with Highest Annual Mean Control Mean1 (f)2 Number of Nonroutine Reported Measurements Name Mean1 Range1 (e.g. I-131, 400)
(f)2 Distance and Direction (f)2 Range1 Range1 River Water (pCi/L)
Gamma (21)
Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-Nb-95 Cs-134 Cs-137 Ba-La-140 Ce-144 15 30 15 15 30 154 15 18 154
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 321 (1/12)
<LLD M-9 Downstream of PLant 321 (1/12)
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
- (0/10)
<LLD 0
Tritium (8) 2000
<LLD
<LLD 0
Direct Radiation:
Control (10 to 12 miles distant)
(mrem/91 days)
Gamma (16)
N/A M03C 11.6 mi @
130/SE 13.3 (4/4)
(11.2 - 15.3) 12.5 (16/16)
(9.9 - 15.3) 0 Direct Radiation:
Inner Ring (General Area at Site Boundary)
(mrem/91 days)
Gamma (54) 14.2 (55/55)
(10.1 - 25.3)
- M01A, 0.75 mi @
353/N 17.7 (4/4)
(12.8 -25.3) 0 Direct Radiation:
Outer Ring (4-5 mi. distant)
(mrem/91 days)
Gamma (63) 13.8 (63/63)
(9.9 - 19.25)
M06B, 4.3 mi @
117/ESE 15.8 (4/4)
(13.7 - 19.0) 0 Direct Radiation:
Special Interest Areas (mrem/91 days)
Gamma (36) 13.8 (36/36)
(10.0 - 17.1)
I-13 0.34 mi @
240/WSW 14.8 (4/4)
(11.8 - 17.2) 0 Notes:
1 Mean and range are based upon detectible measurements only.
2 (f) Fraction of detectible measurements at a specific location.
4 The specified LLD applies to the daughter nuclide of an equilibrium mixture of the parent and daughter nuclides. Per the BPT, the following values may be used for individual nuclide LLDs when equilibrium conditions are not met: 30 pCi/L for zirconium-95, 15 pCi/L for niobium-95, 60 pCi/L for barium-140, and 15 pCi/L for lanthanum-140.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 47 9
ERRATA TO PREVIOUS REPORTS 9.1 Errata to the MNGP AREOR Included in this report is an errata to the 2022 AREOR. In the 2022 AREOR, Figure 4.8-1 included 2022 sediment results for Cs-137 at M-8 (Control) and M-9 which inadvertently included river water results in the calculated annual averages. This issue did not affect the sediment annual average results for M-15.
The errata updates Figure 4.8-1 in Section 4.8 of the 2022 AREOR. The updates to the Cs-137 average values did not change the conclusions of the AREOR, and no changes to the text were required.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 48 10 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM RESULTS This section provides tabulated REMP monitoring results. Data below were analyzed by GEL. The results reported relate only to the items tested and to the samples as received by the laboratory. Copies of GELs accreditations and certificates can be found at www.gel.com. The table notes, matrix abbreviations, and laboratory qualifiers common to each of the GEL analytical results tables are provided below.
Notes
- 1. LLDs are a priori values.
- 2. MDCs are calculated a posteriori value.
- 3. Gamma spectroscopy analysis results are calculated from a measurement using only one gamma energy line.
- 4. Results with either no qualifier, an h, an M, or an L are considered positive results. While a U, UI, or ND are negative.
Matrix Abbreviations AC Airborne Cartridge AP Airborne Particulate SE Sediment TA Aquatic Tissue TP Plant Tissue WG Groundwater WP Drinking Water WS Surface Water Qualifiers h
Preparation or preservation holding time was exceeded.
L Analyte present. Reported value may be biased low. Actual value is expected to be higher.
M M if above MDC and less than LLD.
M REMP Result >MDC/CL and <RDL ND Analyte concentration is not detected above the limits as defined as the U qualifier U
Analyte was analyzed for, but not detected above the Minimum Detection Limit (MDL), Minimum Detectable Activity (MDA), MDC, or Limit of Detection (LOD)
UI Gamma Spectroscopy - uncertain identification; these results were evaluated and found to be false positives, unless otherwise noted X
Lab specific qualifier - see notes from data tables for details.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 49 10.1 Detection of Activity It is often not possible to say for certain when net radioactivity is present in samples at environmental background levels due to natural variations in counting instrument backgrounds and other factors. The data below is reported as determined by the lab with uncertainties and all data has been included (even results with negative numbers). Results with U, UI, or ND qualifiers are considered not detected. Results with blank qualifiers and results with only h, L or M qualifiers (i.e., without also U, UI, or ND qualifiers) are considered to be detected.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 50 AIRBORNE CARTRIDGE: RADIOIODINE Sample Date Air Station M-1 Air Station M-2 Air Station M-3 Air Station M-4 Air Station M-5 (pCi/m3)
(pCi/m3)
(pCi/m3)
(pCi/m3)
(pCi/m3) 1/3/2023 1.38E-03 +/- 1.23E-02 U
4.76E-04 +/- 9.65E-03 U
6.09E-04 +/- 1.10E-02 U
-4.66E-03 +/- 1.39E-02 U
1.20E-02 +/- 1.25E-02 U
1/11/2023 3.64E-03 +/- 9.25E-03 U
1.38E-04 +/- 1.01E-02 U
-5.96E-03 +/- 1.24E-02 U
-5.93E-03 +/- 1.17E-02 U
8.18E-03 +/- 1.01E-02 U
1/18/2023 1.85E-03 +/- 8.21E-03 U
7.38E-03 +/- 1.41E-02 U
-3.40E-03 +/- 7.70E-03 U
-5.97E-03 +/- 9.11E-03 U
-4.75E-03 +/- 1.02E-02 U
1/24/2023
-7.60E-03 +/- 1.19E-02 U
6.11E-03 +/- 9.63E-03 U
-7.20E-03 +/- 1.25E-02 U
9.46E-03 +/- 1.37E-02 U
-5.98E-03 +/- 1.25E-02 U
2/1/2023
-9.15E-04 +/- 7.43E-03 U
-2.25E-03 +/- 7.14E-03 U
-9.34E-03 +/- 9.29E-03 U
-1.33E-03 +/- 9.73E-03 U
9.11E-03 +/- 9.90E-03 U
2/8/2023 3.82E-03 +/- 8.44E-03 U
2.92E-03 +/- 5.38E-03 U
1.18E-02 +/- 8.11E-03 U
1.43E-04 +/- 8.22E-03 U
4.57E-03 +/- 6.40E-03 U
2/15/2023 1.56E-02 +/- 2.58E-02 UI 4.48E-03 +/- 9.70E-03 U
7.89E-03 +/- 1.26E-02 U
8.75E-04 +/- 9.23E-03 U
-7.92E-03 +/- 9.80E-03 U
2/21/2023
-1.06E-03 +/- 1.65E-02 U
4.00E-03 +/- 1.03E-02 U
-4.34E-03 +/- 1.26E-02 U
3.07E-04 +/- 1.12E-02 U
5.41E-03 +/- 1.48E-02 U
3/1/2023 9.03E-03 +/- 1.14E-02 U*
-1.22E-04 +/- 6.25E-03 U*
3.68E-03 +/- 9.55E-03 U*
1.68E-02 +/- 1.43E-02 U*
1.09E-03 +/- 9.67E-03 U
3/7/2023
-7.62E-03 +/- 1.44E-02 U
-3.53E-03 +/- 9.81E-03 U
-4.70E-04 +/- 1.46E-02 U
4.17E-04 +/- 1.21E-02 U
4.38E-03 +/- 1.41E-02 U
3/15/2023 8.04E-04 +/- 8.13E-03 U*
8.50E-04 +/- 7.54E-03 U
-7.71E-03 +/- 1.06E-02 U
5.64E-03 +/- 7.53E-03 U
-4.87E-03 +/- 1.10E-02 U
3/22/2023 9.59E-04 +/- 9.91E-03 U
-5.13E-04 +/- 1.07E-02 U
-8.01E-03 +/- 1.12E-02 U
-3.97E-03 +/- 1.06E-02 U
-7.69E-03 +/- 1.01E-02 U
3/29/2023 4.11E-02 +/- 3.43E-02 U
3.40E-04 +/- 9.60E-03 U
-8.78E-03 +/- 1.93E-02 U
-3.10E-03 +/- 1.92E-02 U
-3.57E-03 +/- 2.21E-02 U
4/5/2023 7.58E-03 +/- 1.71E-02 U
5.99E-03 +/- 1.43E-02 U
6.60E-03 +/- 1.68E-02 U
3.31E-03 +/- 1.87E-02 U
3.99E-03 +/- 1.49E-02 U
4/12/2023 1.08E-02 +/- 2.00E-02 U
-2.76E-03 +/- 1.51E-02 U
3.85E-03 +/- 1.52E-02 U
4.03E-03 +/- 1.73E-02 U
-4.28E-03 +/- 1.94E-02 U
4/19/2023 2.92E-03 +/- 1.06E-02 U
-3.97E-03 +/- 1.11E-02 U
-2.39E-03 +/- 1.15E-02 U
-8.92E-04 +/- 1.43E-02 U
-2.32E-03 +/- 8.17E-03 U
4/25/2023
-2.52E-03 +/- 7.01E-03 U
-3.94E-03 +/- 1.06E-02 U
2.69E-03 +/- 8.92E-03 U
4.50E-03 +/- 7.97E-03 U
-4.33E-04 +/- 6.28E-03 U
5/3/2023
-3.72E-03 +/- 1.17E-02 U
2.22E-03 +/- 1.05E-02 U
3.47E-03 +/- 1.09E-02 U
1.90E-03 +/- 1.33E-02 U
-5.11E-03 +/- 7.98E-03 U
5/10/2023 8.77E-03 +/- 1.07E-02 U
-2.47E-03 +/- 9.96E-03 U
-4.15E-03 +/- 9.13E-03 U
4.53E-03 +/- 1.65E-02 U
-1.11E-03 +/- 8.89E-03 U
5/17/2023
-5.25E-03 +/- 8.43E-03 U
2.04E-03 +/- 9.78E-03 U
-7.49E-03 +/- 1.06E-02 U
1.19E-03 +/- 1.39E-02 U
6.63E-06 +/- 6.79E-03 U
5/24/2023
-1.22E-02 +/- 1.41E-02 U
2.66E-03 +/- 1.35E-02 U
-1.66E-03 +/- 1.16E-02 U
1.76E-03 +/- 1.18E-02 U
9.88E-03 +/- 9.25E-03 U
Note:
- The 3/1/2023 samples at locations M-1, M-2, M-3, and M-4 and the 3/15/2023 sample at location M-1 are declared missed samples due to the possibility of partial sample collection, since the filters were torn on collection (Condition Report 501000071013). See Section 7.4.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 51 Sample Date Air Station M-1 (pCi/m3)
Air Station M-2 (pCi/m3)
Air Station M-3 (pCi/m3)
Air Station M-4 (pCi/m3)
Air Station M-5 (pCi/m3) 5/31/2023 6.09E-02 +/- 4.54E-02 UI
-1.02E-02 +/- 2.17E-02 U
9.61E-04 +/- 1.49E-02 U
-2.15E-02 +/- 1.98E-02 U
-1.86E-03 +/- 1.75E-02 U
6/7/2023 2.14E-03 +/- 2.20E-02 U
-1.48E-02 +/- 1.82E-02 U
1.45E-03 +/- 2.01E-02 U
1.04E-02 +/- 2.10E-02 U
1.41E-03 +/- 1.91E-02 U
6/14/2023 2.00E-03 +/- 1.61E-02 U
8.07E-03 +/- 1.78E-02 U
-1.71E-02 +/- 1.41E-02 U
-9.61E-04 +/- 2.27E-02 U
-4.79E-03 +/- 1.13E-02 U
6/21/2023 1.17E-02 +/- 1.27E-02 U
-2.24E-04 +/- 8.12E-03 U
-4.46E-03 +/- 9.67E-03 U
-1.27E-04 +/- 9.87E-03 U
7.51E-03 +/- 7.54E-03 U
6/28/2023
-7.37E-03 +/- 1.00E-02 U
-3.99E-03 +/- 8.67E-03 U
3.95E-03 +/- 8.27E-03 U
-4.82E-03 +/- 7.85E-03 U
-5.17E-03 +/- 8.37E-03 U
7/5/2023 4.32E-03 +/- 4.98E-03 U
-4.36E-03 +/- 4.93E-03 U
-1.57E-03 +/- 4.02E-03 U
-6.41E-03 +/- 4.49E-03 U
5.32E-03 +/- 3.99E-03 U
7/12/2023 7.90E-03 +/- 1.51E-02 U
-5.38E-03 +/- 9.77E-03 U
-4.90E-03 +/- 1.28E-02 U
-1.53E-03 +/- 9.33E-03 U
2.74E-03 +/- 9.00E-03 U
7/19/2023
-4.16E-03 +/- 1.24E-02 U
4.39E-03 +/- 1.04E-02 U
6.82E-03 +/- 1.19E-02 U
-4.76E-04 +/- 1.10E-02 U
3.78E-04 +/- 8.08E-03 U
7/26/2023 3.63E-03 +/- 9.15E-03 U
-4.11E-04 +/- 9.13E-03 U
2.35E-03 +/- 9.02E-03 U
6.14E-04 +/- 8.71E-03 U
-5.85E-03 +/- 1.03E-02 U
8/2/2023 4.36E-03 +/- 8.03E-03 U
1.71E-03 +/- 7.95E-03 U
4.42E-03 +/- 7.65E-03 U
-2.20E-03 +/- 7.15E-03 U
1.92E-04 +/- 8.01E-03 U
8/9/2023 7.05E-04 +/- 9.58E-03 U
-7.90E-03 +/- 1.45E-02 U
-6.10E-03 +/- 1.63E-02 U
-4.91E-03 +/- 1.58E-02 U
4.73E-04 +/- 1.40E-02 U
8/16/2023
-7.21E-03 +/- 1.72E-02 U
-6.36E-03 +/- 1.75E-02 U
1.21E-02 +/- 1.78E-02 U
1.64E-02 +/- 1.38E-02 U
-3.70E-03 +/- 1.70E-02 U
8/23/2023 1.08E-02 +/- 1.07E-02 U
-4.57E-04 +/- 1.15E-02 U
8.24E-04 +/- 1.45E-02 U
6.45E-03 +/- 1.13E-02 U
-2.90E-03 +/- 1.29E-02 U
8/30/2023 8.06E-03 +/- 3.67E-02 U
-7.48E-03 +/- 2.81E-02 U
-1.04E-02 +/- 3.90E-02 U
6.84E-03 +/- 3.70E-02 U
-1.74E-03 +/- 3.47E-02 U
9/6/2023
-1.30E-02 +/- 2.98E-02 U
1.16E-02 +/- 2.20E-02 U
-1.93E-02 +/- 2.27E-02 U
-1.15E-02 +/- 1.91E-02 U
-2.68E-03 +/- 1.83E-02 U
9/13/2023
-8.34E-03 +/- 1.02E-02 U
8.23E-03 +/- 9.37E-03 U
-6.10E-03 +/- 1.24E-02 U
1.29E-03 +/- 9.71E-03 U
-3.35E-03 +/- 1.40E-02 U
9/20/2023 1.22E-02 +/- 2.20E-02 U
8.92E-03 +/- 1.12E-02 U
6.47E-03 +/- 1.91E-02 U
-1.05E-02 +/- 1.57E-02 U
-1.94E-03 +/- 1.04E-02 U
9/27/2023 4.08E-03 +/- 1.83E-02 U
3.78E-03 +/- 1.19E-02 U
-8.77E-03 +/- 1.18E-02 U
7.29E-04 +/- 1.20E-02 U
1.02E-02 +/- 1.33E-02 U
10/4/2023
-1.04E-02 +/- 1.81E-02 U
1.25E-02 +/- 2.36E-02 U
-2.23E-02 +/- 2.64E-02 U
3.41E-02 +/- 2.15E-01 U*
1.61E-02 +/- 2.06E-02 U
10/11/2023
-8.04E-03 +/- 2.34E-02 U
-8.78E-03 +/- 2.38E-02 U
2.42E-02 +/- 2.63E-02 U
-1.66E-04 +/- 1.49E-02 U
4.53E-03 +/- 1.78E-02 U
10/18/2023 6.68E-03 +/- 1.06E-02 U
-5.76E-03 +/- 7.64E-03 U
1.64E-03 +/- 1.39E-02 U
1.64E-03 +/- 1.02E-02 U
2.56E-04 +/- 8.53E-03 U
10/25/2023 1.23E-02 +/- 1.59E-02 U
7.02E-03 +/- 1.39E-02 U
7.19E-04 +/- 1.66E-02 U
-9.13E-04 +/- 1.83E-02 U
-7.12E-03 +/- 1.45E-02 U
Note:
- The M-4 air sampler (10/4/2023 sample date) was found to not be running on the indicated sample collection date. Partial sample was collected. Although results are provided, this is considered a missed sample (Condition Report 501000077354). See Section 7.4.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 52 Sample Date Air Station M-1 (pCi/m3)
Air Station M-2 (pCi/m3)
Air Station M-3 (pCi/m3)
Air Station M-4 (pCi/m3)
Air Station M-5 (pCi/m3) 11/1/2023 1.38E-02 +/- 3.51E-02 U
-5.69E-03 +/- 3.23E-02 U
3.30E-02 +/- 3.35E-02 U
-8.38E-03 +/- 2.92E-02 U
2.80E-02 +/- 2.88E-02 U
11/8/2023 4.66E-03 +/- 2.02E-02 U
3.50E-02 +/- 2.07E-02 UI 1.12E-02 +/- 2.22E-02 U
-1.07E-02 +/- 2.67E-02 U
5.37E-03 +/- 2.33E-02 U
11/15/2023 8.31E-04 +/- 1.52E-02 U
2.68E-03 +/- 1.34E-02 U
2.89E-03 +/- 1.73E-02 U
7.68E-03 +/- 1.65E-02 U
7.84E-03 +/- 1.20E-02 U
11/21/2023 1.36E-03 +/- 1.26E-02 U
-2.11E-03 +/- 9.29E-03 U
7.70E-03 +/- 9.41E-03 U
5.35E-03 +/- 1.10E-02 U
-3.54E-03 +/- 1.22E-02 U
11/29/2023 2.24E-03 +/- 8.59E-03 U
8.59E-03 +/- 8.80E-03 U
2.28E-03 +/- 7.40E-03 U
-1.15E-04 +/- 8.83E-03 U
6.14E-04 +/- 5.76E-03 U
12/6/2023 2.32E-03 +/- 6.75E-03 U
-1.30E-03 +/- 7.53E-03 U
1.24E-03 +/- 7.88E-03 U
-5.27E-03 +/- 9.43E-03 U
8.12E-04 +/- 8.51E-03 U
12/13/2023
-3.44E-03 +/- 1.53E-02 U
-8.48E-03 +/- 2.11E-02 U
-4.14E-03 +/- 1.79E-02 U
3.22E-02 +/- 2.30E-02 UI
-8.68E-03 +/- 1.64E-02 U
12/20/2023
-2.68E-03 +/- 1.47E-02 U
1.68E-03 +/- 1.41E-02 U
3.28E-03 +/- 2.03E-02 U
1.37E-03 +/- 1.20E-02 U
1.88E-02 +/- 1.85E-02 U
12/27/2023
-1.16E-03 +/- 1.67E-02 U
-1.51E-03 +/- 1.59E-02 U
6.89E-03 +/- 1.53E-02 U
-8.23E-03 +/- 1.51E-02 U
4.02E-03 +/- 1.45E-02 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 53 AIRBORNE PARTICULATES: GROSS BETA Sample Date Air Station M-1 (pCi/m3)
Air Station M-2 (pCi/m3)
Air Station M-3 (pCi/m3)
Air Station M-4 (pCi/m3)
Air Station M-5 (pCi/m3) 1/3/2023 0.069 +/- 0.006 0.069 +/- 0.006 0.076 +/- 0.006 0.077 +/- 0.007 0.069 +/- 0.006 1/11/2023 0.074 +/- 0.005 0.089 +/- 0.006 0.083 +/- 0.006 0.083 +/- 0.006 0.093 +/- 0.006 1/18/2023 0.070 +/- 0.006 0.073 +/- 0.006 0.072 +/- 0.006 0.073 +/- 0.006 0.073 +/- 0.006 1/24/2023 0.060 +/- 0.007 0.039 +/- 0.005 0.045 +/- 0.005 0.051 +/- 0.006 0.046 +/- 0.005 2/1/2023 0.046 +/- 0.005 0.041 +/- 0.004 0.049 +/- 0.005 0.048 +/- 0.005 0.045 +/- 0.004 2/8/2023 0.056 +/- 0.006 0.056 +/- 0.005 0.057 +/- 0.005 0.047 +/- 0.005 0.060 +/- 0.006 2/15/2023 0.031 +/- 0.004 0.031 +/- 0.004 0.039 +/- 0.005 0.039 +/- 0.005 0.042 +/- 0.005 2/21/2023 0.047 +/- 0.006 0.029 +/- 0.004 0.034 +/- 0.005 0.040 +/- 0.005 0.041 +/- 0.005 3/1/2023 0.034 +/- 0.004*
0.039 +/- 0.004*
0.038 +/- 0.004*
0.043 +/- 0.005*
0.039 +/- 0.004 3/7/2023 0.034 +/- 0.005 0.028 +/- 0.004 0.037 +/- 0.005 0.032 +/- 0.005 0.029 +/- 0.004 3/15/2023 0.034 +/- 0.004*
0.030 +/- 0.004 0.033 +/- 0.004 0.034 +/- 0.004 0.032 +/- 0.004 3/22/2023 0.036 +/- 0.004 0.032 +/- 0.004 0.043 +/- 0.005 0.043 +/- 0.005 0.043 +/- 0.005 3/29/2023 0.057 +/- 0.006 0.054 +/- 0.005 0.055 +/- 0.005 0.057 +/- 0.006 0.060 +/- 0.006 4/5/2023 0.035 +/- 0.005 0.032 +/- 0.004 0.035 +/- 0.005 0.039 +/- 0.005 0.038 +/- 0.005 4/12/2023 0.045 +/- 0.005 0.038 +/- 0.004 0.043 +/- 0.005 0.044 +/- 0.005 0.045 +/- 0.005 4/19/2023 0.031 +/- 0.004 0.031 +/- 0.004 0.032 +/- 0.004 0.034 +/- 0.005 0.029 +/- 0.004 4/25/2023 0.021 +/- 0.004 0.015 +/- 0.003 0.020 +/- 0.004 0.022 +/- 0.004 0.022 +/- 0.004 5/3/2023 0.020 +/- 0.003 0.022 +/- 0.003 0.021 +/- 0.003 0.025 +/- 0.004 0.022 +/- 0.003 5/10/2023 0.025 +/- 0.004 0.025 +/- 0.004 0.022 +/- 0.003 0.022 +/- 0.003 0.025 +/- 0.004 5/17/2023 0.031 +/- 0.004 0.031 +/- 0.004 0.029 +/- 0.004 0.028 +/- 0.004 0.028 +/- 0.003 5/24/2023 0.027 +/- 0.004 0.024 +/- 0.004 0.022 +/- 0.003 0.025 +/- 0.004 0.025 +/- 0.003 5/31/2023 0.028 +/- 0.004 0.033 +/- 0.004 0.027 +/- 0.004 0.031 +/- 0.004 0.033 +/- 0.004 6/7/2023 0.036 +/- 0.004 0.043 +/- 0.005 0.035 +/- 0.004 0.038 +/- 0.005 0.035 +/- 0.004 6/14/2023 0.029 +/- 0.004 0.028 +/- 0.004 0.022 +/- 0.003 0.024 +/- 0.004 0.029 +/- 0.004 6/21/2023 0.034 +/- 0.004 0.034 +/- 0.004 0.031 +/- 0.004 0.035 +/- 0.005 0.032 +/- 0.004 6/28/2023 0.031 +/- 0.004 0.030 +/- 0.004 0.029 +/- 0.004 0.033 +/- 0.004 0.031 +/- 0.004 7/5/2023 0.030 +/- 0.004 0.038 +/- 0.005 0.029 +/- 0.004 0.035 +/- 0.005 0.036 +/- 0.004 7/12/2023 0.025 +/- 0.004 0.026 +/- 0.004 0.026 +/- 0.004 0.027 +/- 0.004 0.024 +/- 0.003 7/19/2023 0.029 +/- 0.004 0.027 +/- 0.004 0.023 +/- 0.003 0.025 +/- 0.004 0.023 +/- 0.003 7/26/2023 0.037 +/- 0.005 0.039 +/- 0.005 0.032 +/- 0.004 0.038 +/- 0.005 0.036 +/- 0.004 Note:
- The 3/1/2023 samples at locations M-1, M-2, M-3, and M-4 and the 3/15/2023 sample at location M-1 are declared missed samples due to the possibility of partial sample collection, since the filters were torn on collection (Condition Report 501000071013). See Section 7.4.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 54 Sample Date Air Station M-1 (pCi/m3)
Air Station M-2 (pCi/m3)
Air Station M-3 (pCi/m3)
Air Station M-4 (pCi/m3)
Air Station M-5 (pCi/m3) 8/2/2023 0.035 +/- 0.004 0.029 +/- 0.004 0.029 +/- 0.004 0.029 +/- 0.004 0.033 +/- 0.004 8/9/2023 0.043 +/- 0.005 0.041 +/- 0.005 0.034 +/- 0.004 0.042 +/- 0.004 0.038 +/- 0.004 8/16/2023 0.025 +/- 0.004 0.023 +/- 0.004 0.026 +/- 0.004 0.022 +/- 0.003 0.023 +/- 0.003 8/23/2023 0.037 +/- 0.004 0.040 +/- 0.005 0.042 +/- 0.005 0.035 +/- 0.004 0.044 +/- 0.005 8/30/2023 0.036 +/- 0.004 0.038 +/- 0.004 0.038 +/- 0.005 0.037 +/- 0.004 0.038 +/- 0.004 9/6/2023 0.053 +/- 0.005 0.062 +/- 0.006 0.052 +/- 0.006 0.056 +/- 0.005 0.052 +/- 0.005 9/13/2023 0.023 +/- 0.003 0.028 +/- 0.004 0.027 +/- 0.004 0.028 +/- 0.004 0.029 +/- 0.004 9/20/2023 0.039 +/- 0.004 0.044 +/- 0.005 0.042 +/- 0.005 0.042 +/- 0.005 0.039 +/- 0.004 9/27/2023 0.046 +/- 0.005 0.046 +/- 0.004 0.050 +/- 0.005 0.052 +/- 0.005 0.055 +/- 0.005 10/4/2023 0.054 +/- 0.005 0.060 +/- 0.006 0.058 +/- 0.006 0.213 +/- 0.099*
0.058 +/- 0.006 10/11/2023 0.020 +/- 0.004 0.028 +/- 0.004 0.021 +/- 0.004 0.024 +/- 0.004 0.022 +/- 0.004 10/18/2023 0.025 +/- 0.004 0.024 +/- 0.004 0.021 +/- 0.004 0.021 +/- 0.004 0.030 +/- 0.004 10/25/2023 0.044 +/- 0.005 0.040 +/- 0.004 0.034 +/- 0.004 0.038 +/- 0.004 0.042 +/- 0.004 11/1/2023 0.043 +/- 0.005 0.034 +/- 0.004 0.030 +/- 0.004 0.034 +/- 0.004 0.037 +/- 0.004 11/8/2023 0.062 +/- 0.005 0.062 +/- 0.005 0.055 +/- 0.005 0.057 +/- 0.005 0.051 +/- 0.005 11/15/2023 0.036 +/- 0.004 0.032 +/- 0.004 0.033 +/- 0.004 0.036 +/- 0.004 0.035 +/- 0.004 11/21/2023 0.042 +/- 0.005 0.037 +/- 0.004 0.046 +/- 0.005 0.035 +/- 0.004 0.035 +/- 0.004 11/29/2023 0.041 +/- 0.004 0.038 +/- 0.004 0.041 +/- 0.004 0.039 +/- 0.004 0.035 +/- 0.004 12/6/2023 0.057 +/- 0.005 0.057 +/- 0.005 0.050 +/- 0.005 0.048 +/- 0.005 0.053 +/- 0.005 12/13/2023 0.044 +/- 0.005 0.043 +/- 0.004 0.037 +/- 0.004 0.042 +/- 0.004 0.043 +/- 0.004 12/20/2023 0.055 +/- 0.005 0.054 +/- 0.005 0.056 +/- 0.005 0.051 +/- 0.005 0.054 +/- 0.005 12/27/2023 0.071 +/- 0.006 0.064 +/- 0.005 0.052 +/- 0.005 0.067 +/- 0.006 0.064 +/- 0.005 Note:
- The M-4 air sampler (10/4/2023 sample date) was found to not be running on the indicated sample collection date. Partial sample was collected. Although results are provided, this is considered a missed sample (Condition Report 501000077354). See Section 7.4.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 55 AIRBORNE PARTICULATES: GAMMA ISOTOPIC Air Station M-1 Qtr 1 (pCi/m3)
Qtr 2 (pCi/m3)
Qtr 3 (pCi/m3)
Qtr 4 (pCi/m3)
Barium-140 8.24E-03 +/- 7.69E-03 U
-2.50E-04 +/- 7.24E-03 U
5.72E-03 +/- 5.23E-03 U
2.72E-03 +/- 8.65E-03 U
Beryllium-7 5.51E-02 +/- 7.39E-03 6.27E-02 +/- 1.13E-02 9.09E-02 +/- 1.02E-02 7.28E-02 +/- 8.83E-03 Cerium-141 2.31E-05 +/- 4.18E-04 U
-1.20E-04 +/- 8.48E-04 U
2.59E-05 +/- 6.07E-04 U
3.34E-04 +/- 6.97E-04 U
Cerium-144
-3.57E-05 +/- 9.07E-04 U
8.87E-04 +/- 1.61E-03 U
3.63E-04 +/- 1.19E-03 U
-1.38E-03 +/- 1.20E-03 U
Cesium-134 6.27E-05 +/- 2.41E-04 U
5.85E-05 +/- 2.73E-04 U
1.78E-04 +/- 2.77E-04 U
4.07E-05 +/- 2.77E-04 U
Cesium-137 1.15E-04 +/- 2.08E-04 U
6.17E-05 +/- 3.32E-04 U
7.15E-06 +/- 2.84E-04 U
3.62E-05 +/- 2.55E-04 U
Cobalt-58
-2.44E-04 +/- 2.74E-04 U
2.42E-04 +/- 3.95E-04 U
7.21E-05 +/- 3.29E-04 U
-2.52E-04 +/- 3.36E-04 U
-4.03E-05 +/- 3.01E-04 U
3.61E-05 +/- 3.11E-04 U
2.87E-04 +/- 5.07E-04 U
-2.58E-04 +/- 3.47E-04 U
Lanthanum-140 3.28E-04 +/- 1.46E-03 U
-2.26E-03 +/- 3.56E-03 U
1.37E-03 +/- 2.54E-03 U
4.24E-04 +/- 2.85E-03 U
Manganese-54 5.89E-05 +/- 2.50E-04 U
2.27E-04 +/- 3.53E-04 U
4.35E-04 +/- 3.27E-04 U
3.73E-05 +/- 2.72E-04 U
Niobium-95
-9.26E-05 +/- 2.21E-04 U
-4.16E-04 +/- 4.05E-04 U
2.95E-04 +/- 3.31E-04 U
8.79E-05 +/- 4.46E-04 U
Ruthenium-103
-1.82E-04 +/- 2.49E-04 U
-6.79E-04 +/- 6.59E-04 U
2.10E-04 +/- 6.81E-04 U
4.21E-05 +/- 4.63E-04 U
Ruthenium-106 3.25E-04 +/- 1.72E-03 U
-8.99E-04 +/- 2.77E-03 U
-8.39E-04 +/- 2.20E-03 U
2.91E-04 +/- 2.41E-03 U
Zinc-65 1.25E-04 +/- 4.36E-04 U
2.78E-04 +/- 9.92E-04 U
2.98E-05 +/- 7.35E-04 U
4.03E-04 +/- 1.12E-03 U
Zirconium-95 1.37E-04 +/- 5.86E-04 U
3.12E-04 +/- 8.35E-04 U
6.86E-04 +/- 1.08E-03 U
2.61E-04 +/- 6.87E-04 U
Air Station M-2 Qtr 1 (pCi/m3)
Qtr 2 (pCi/m3)
Qtr 3 (pCi/m3)
Qtr 4 (pCi/m3)
Barium-140 2.36E-03 +/- 6.49E-03 U
7.82E-04 +/- 6.01E-03 U
3.49E-03 +/- 6.01E-03 U
9.54E-04 +/- 1.05E-02 U
Beryllium-7 4.81E-02 +/- 1.06E-02 5.73E-02 +/- 9.02E-03 8.65E-02 +/- 1.15E-02 7.14E-02 +/- 1.08E-02 Cerium-141 9.75E-05 +/- 5.72E-04 U
-3.36E-04 +/- 5.19E-04 U
-1.81E-04 +/- 5.74E-04 U
-1.64E-04 +/- 6.65E-04 U
Cerium-144
-1.54E-03 +/- 1.25E-03 U
1.58E-04 +/- 9.38E-04 U
-6.19E-04 +/- 8.99E-04 U
7.41E-05 +/- 1.27E-03 U
Cesium-134 1.83E-04 +/- 2.77E-04 U
3.06E-05 +/- 2.54E-04 U
-1.87E-04 +/- 2.73E-04 U
3.31E-04 +/- 3.63E-04 U
-3.17E-05 +/- 2.84E-04 U
-2.94E-05 +/- 2.70E-04 U
2.90E-05 +/- 2.77E-04 U
-3.46E-04 +/- 2.67E-04 U
Cobalt-58
-1.36E-04 +/- 3.45E-04 U
1.47E-04 +/- 3.35E-04 U
3.26E-05 +/- 3.27E-04 U
4.85E-04 +/- 2.83E-04 U
Cobalt-60 1.44E-04 +/- 3.16E-04 U
3.11E-04 +/- 4.52E-04 U
-2.16E-04 +/- 1.98E-04 U
2.20E-05 +/- 3.70E-04 U
Lanthanum-140
-3.81E-04 +/- 2.58E-03 U
-2.74E-04 +/- 2.05E-03 U
-2.51E-04 +/- 3.09E-03 U
-3.65E-03 +/- 4.85E-03 U
-3.01E-02 +/- 2.82E-04 U
1.53E-04 +/- 2.71E-04 U
-9.84E-05 +/- 3.15E-04 U
2.82E-05 +/- 3.84E-04 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 56 Air Station M-2 Qtr 1 (pCi/m3)
Qtr 2 (pCi/m3)
Qtr 3 (pCi/m3)
Qtr 4 (pCi/m3)
Niobium-95 6.27E-04 +/- 4.52E-04 U
-2.11E-04 +/- 2.93E-04 U
-6.63E-05 +/- 3.94E-04 U
-3.33E-04 +/- 4.48E-04 U
Ruthenium-103
-1.42E-04 +/- 4.09E-04 U
-1.98E-04 +/- 3.56E-04 U
-3.64E-04 +/- 5.30E-04 U
4.36E-04 +/- 5.00E-04 U
Ruthenium-106
-6.84E-04 +/- 2.43E-03 U
3.77E-04 +/- 2.14E-03 U
1.12E-03 +/- 2.19E-03 U
4.29E-04 +/- 2.73E-03 U
Zinc-65
-5.85E-04 +/- 6.07E-04 U
-2.70E-04 +/- 7.02E-04 U
-6.56E-04 +/- 7.84E-04 U
4.57E-04 +/- 8.45E-04 U
Zirconium-95 4.19E-04 +/- 6.71E-04 U
-8.60E-05 +/- 5.65E-04 U
-6.39E-06 +/- 6.96E-04 U
-4.12E-04 +/- 7.87E-04 U
Air Station M-3 Qtr 1 (pCi/m3)
Qtr 2 (pCi/m3)
Qtr 3 (pCi/m3)
Qtr 4 (pCi/m3)
Barium-140
-3.19E-03 +/- 6.30E-03 U
1.18E-03 +/- 6.89E-03 U
-3.23E-03 +/- 6.68E-03 U
1.21E-03 +/- 9.32E-03 U
Beryllium-7 6.15E-02 +/- 1.04E-02 6.16E-02 +/- 1.15E-02 1.00E-01 +/- 1.15E-02 7.36E-02 +/- 8.93E-03 Cerium-141 4.43E-04 +/- 6.16E-04 U
-5.11E-04 +/- 7.53E-04 U
-7.08E-05 +/- 5.68E-04 U
-3.15E-04 +/- 5.93E-04 U
Cerium-144
-4.04E-05 +/- 8.42E-04 U
2.19E-04 +/- 1.31E-03 U
3.44E-04 +/- 1.05E-03 U
3.12E-04 +/- 9.99E-04 U
Cesium-134 3.25E-04 +/- 3.35E-04 U
2.31E-04 +/- 3.49E-04 U
2.21E-04 +/- 2.52E-04 U
1.79E-04 +/- 2.73E-04 U
-9.45E-05 +/- 3.86E-04 U
-3.40E-05 +/- 3.45E-04 U
2.10E-04 +/- 2.65E-04 U
3.97E-05 +/- 2.11E-04 U
Cobalt-58
-1.73E-04 +/- 4.68E-04 U
-2.93E-05 +/- 4.66E-04 U
-2.14E-04 +/- 3.36E-04 U
1.43E-04 +/- 3.00E-04 U
-2.33E-04 +/- 4.17E-04 U
6.21E-05 +/- 3.66E-04 U
-3.31E-05 +/- 1.89E-04 U
-1.87E-04 +/- 2.28E-04 U
Lanthanum-140
-3.88E-04 +/- 1.85E-03 U
-1.84E-03 +/- 2.84E-03 U
-3.65E-05 +/- 1.89E-03 U
-6.64E-04 +/- 3.66E-03 U
Manganese-54 1.09E-04 +/- 2.68E-04 U
3.95E-05 +/- 2.94E-04 U
8.95E-06 +/- 2.99E-04 U
4.85E-04 +/- 3.02E-04 UI Niobium-95 2.34E-04 +/- 4.17E-04 U
-1.59E-04 +/- 4.41E-04 U
6.29E-05 +/- 3.65E-04 U
-1.57E-05 +/- 4.36E-04 U
Ruthenium-103 2.92E-04 +/- 4.39E-04 U
-1.73E-04 +/- 4.79E-04 U
2.81E-04 +/- 4.29E-04 U
-3.34E-05 +/- 4.15E-04 U
Ruthenium-106
-3.64E-04 +/- 2.66E-03 U
6.20E-04 +/- 2.75E-03 U
-1.01E-03 +/- 2.25E-03 U
7.73E-04 +/- 2.59E-03 U
Zinc-65
-4.82E-04 +/- 7.45E-04 U
4.24E-04 +/- 6.13E-04 U
-9.58E-05 +/- 6.56E-04 U
-1.96E-04 +/- 6.15E-04 U
Zirconium-95 1.09E-04 +/- 7.30E-04 U
2.63E-04 +/- 8.70E-04 U
3.21E-06 +/- 6.68E-04 U
1.88E-05 +/- 6.03E-04 U
Air Station M-4 Qtr 1 (pCi/m3)
Qtr 2 (pCi/m3)
Qtr 3 (pCi/m3)
Qtr 4 (pCi/m3)
Barium-140 2.70E-05 +/- 7.19E-03 U
-9.29E-03 +/- 1.38E-02 U
-2.13E-03 +/- 7.27E-03 U
7.89E-03 +/- 8.51E-03 U
Beryllium-7 4.97E-02 +/- 7.92E-03 5.69E-02 +/- 1.73E-02 1.03E-01 +/- 1.19E-02 7.05E-02 +/- 1.01E-02 Cerium-141
-2.50E-04 +/- 6.81E-04 U
2.23E-04 +/- 1.24E-03 U
1.36E-04 +/- 1.22E-03 U
-2.78E-04 +/- 8.48E-04 U
Cerium-144
-4.18E-04 +/- 1.34E-03 U
1.14E-03 +/- 2.13E-03 U
-5.56E-04 +/- 1.45E-03 U
7.56E-04 +/- 1.38E-03 U
Cesium-134 9.55E-05 +/- 3.21E-04 U
-1.54E-05 +/- 6.70E-04 U
2.76E-04 +/- 4.10E-04 U
-5.49E-05 +/- 3.12E-04 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 57 Air Station M-4 Qtr 1 (pCi/m3)
Qtr 2 (pCi/m3)
Qtr 3 (pCi/m3)
Qtr 4 (pCi/m3)
Cesium-137 4.84E-05 +/- 3.76E-04 U
-1.45E-04 +/- 5.34E-04 U
-7.59E-05 +/- 2.57E-04 U
-8.45E-06 +/- 3.26E-04 U
Cobalt-58 1.80E-04 +/- 4.68E-04 U
1.93E-04 +/- 8.55E-04 U
8.68E-05 +/- 4.10E-04 U
2.44E-04 +/- 6.18E-04 U
Cobalt-60 8.79E-05 +/- 4.23E-04 U
1.01E-03 +/- 6.64E-04 U
2.03E-04 +/- 4.02E-04 U
3.78E-05 +/- 2.76E-04 U
Lanthanum-140
-1.26E-03 +/- 2.77E-03 U
-3.78E-04 +/- 5.34E-03 U
-1.38E-03 +/- 2.31E-03 U
-1.57E-03 +/- 3.74E-03 U
Manganese-54 9.83E-05 +/- 3.48E-04 U
2.20E-04 +/- 6.30E-04 U
1.92E-05 +/- 3.51E-04 U
2.59E-04 +/- 2.81E-04 U
Niobium-95 4.43E-04 +/- 4.78E-04 U
5.81E-04 +/- 8.63E-04 U
2.48E-05 +/- 4.75E-04 U
2.38E-04 +/- 3.93E-04 U
Ruthenium-103 1.23E-04 +/- 4.82E-04 U
-3.25E-04 +/- 6.69E-04 U
1.08E-03 +/- 1.78E-03 UI 2.32E-04 +/- 5.08E-04 U
Ruthenium-106 1.97E-03 +/- 1.95E-03 U
1.21E-03 +/- 4.80E-03 U
-2.54E-03 +/- 2.90E-03 U
-2.21E-03 +/- 2.75E-03 U
Zinc-65
-3.29E-04 +/- 8.40E-04 U
1.31E-04 +/- 7.66E-04 U
4.15E-04 +/- 6.79E-04 U
-3.94E-04 +/- 7.95E-04 U
Zirconium-95 1.13E-04 +/- 8.25E-04 U
5.74E-04 +/- 1.62E-03 U
-1.19E-04 +/- 8.06E-04 U
-1.99E-05 +/- 6.89E-04 U
Air Station M-5 Qtr 1 (pCi/m3)
Qtr 2 (pCi/m3)
Qtr 3 (pCi/m3)
Qtr 4 (pCi/m3)
Barium-140
-2.54E-03 +/- 6.23E-03 U
2.82E-03 +/- 7.63E-03 U
2.72E-03 +/- 5.65E-03 U
3.59E-03 +/- 6.98E-03 U
Beryllium-7 5.07E-02 +/- 9.34E-03 6.95E-02 +/- 1.10E-02 9.44E-02 +/- 9.56E-03 6.22E-02 +/- 8.88E-03 Cerium-141
-3.18E-04 +/- 5.50E-04 U
-1.53E-04 +/- 7.67E-04 U
-3.11E-05 +/- 5.63E-04 U
1.84E-04 +/- 5.29E-04 U
Cerium-144 5.81E-04 +/- 9.71E-04 U
4.56E-04 +/- 1.41E-03 U
-3.82E-04 +/- 1.27E-03 U
-5.91E-04 +/- 9.53E-04 U
Cesium-134
-7.88E-05 +/- 3.16E-04 U
-4.31E-05 +/- 3.87E-04 U
-1.08E-04 +/- 2.85E-04 U
5.29E-05 +/- 2.73E-04 U
Cesium-137 1.23E-04 +/- 2.92E-04 U
-9.01E-05 +/- 3.71E-04 U
3.19E-05 +/- 2.96E-04 U
-1.06E-04 +/- 2.42E-04 U
Cobalt-58
-2.67E-04 +/- 3.40E-04 U
-8.78E-05 +/- 3.98E-04 U
-3.52E-05 +/- 3.91E-04 U
-8.31E-05 +/- 2.94E-04 U
Cobalt-60 1.41E-04 +/- 2.85E-04 U
-5.74E-05 +/- 3.46E-04 U
1.11E-04 +/- 2.73E-04 U
-7.61E-05 +/- 2.63E-04 U
Lanthanum-140
-4.89E-03 +/- 4.07E-03 U
2.32E-03 +/- 2.69E-03 U
3.01E-03 +/- 2.70E-03 U
-2.03E-03 +/- 3.02E-03 U
Manganese-54 3.16E-05 +/- 3.46E-04 U
-7.75E-06 +/- 3.50E-04 U
5.50E-05 +/- 2.90E-04 U
-1.64E-04 +/- 2.48E-04 U
Niobium-95 3.63E-04 +/- 3.83E-04 U
1.09E-04 +/- 4.79E-04 U
-5.90E-05 +/- 4.15E-04 U
1.68E-05 +/- 2.95E-04 U
Ruthenium-103
-4.45E-04 +/- 4.00E-04 U
-1.93E-04 +/- 5.47E-04 U
-3.52E-04 +/- 4.21E-04 U
-3.13E-04 +/- 3.68E-04 U
Ruthenium-106
-4.02E-04 +/- 2.74E-03 U
-4.12E-04 +/- 2.82E-03 U
-9.96E-04 +/- 2.26E-03 U
5.66E-04 +/- 1.66E-03 U
Zinc-65
-2.08E-04 +/- 7.37E-04 U
6.44E-04 +/- 1.33E-03 U
-3.31E-04 +/- 6.58E-04 U
2.14E-04 +/- 4.93E-04 U
Zirconium-95 3.62E-04 +/- 7.63E-04 U
-1.26E-04 +/- 6.73E-04 U
-5.09E-04 +/- 5.79E-04 U
7.79E-04 +/- 5.63E-04 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 58 SEDIMENT: GAMMA ISOTOPIC M-8c Upstream of Plant Qtr 2 Qtr 4 M-9 Downstream of Plant Qtr 2 Qtr 4 (pCi/Kg, dry)
(pCi/Kg, dry)
(pCi/Kg, dry)
(pCi/Kg, dry)
Barium-140 8.0 +/- 237.0 U
63.0 +/- 122.0 U
Barium-140 106.0 +/- 178.0 U
86.7 +/- 77.3 U
Beryllium-7 314.0 +/- 327.0 UI 44.9 +/- 203.0 U
Beryllium-7 530.0 +/- 382.0 UI 24.2 +/- 127.0 U
Cerium-144
-63.2 +/- 104.0 U
11.0 +/- 86.7 U
Cerium-144 169.0 +/- 220.0 UI 20.1 +/- 84.6 U
Cesium-134 13.9 +/- 26.6 U
27.6 +/- 39.2 U
Cesium-134 27.6 +/- 38.2 U
16.2 +/- 40.9 U
Cesium-137 53.3 +/- 37.9 UI
-7.5 +/- 26.8 U
Cesium-137 6.0 +/- 22.5 U
14.9 +/- 21.6 U
Cobalt-58 2.8 +/- 23.0 U
-1.5 +/- 30.1 U
Cobalt-58 12.4 +/- 18.3 U
3.8 +/- 19.4 U
Cobalt-60 5.4 +/- 23.7 U
-24.2 +/- 32.3 U
-2.5 +/- 22.0 U
6.7 +/- 17.5 U
Iron-59 5.6 +/- 60.6 U
-29.9 +/- 71.8 U
Iron-59
-30.6 +/- 47.0 U
-13.3 +/- 43.9 U
Lanthanum-140 70.2 +/- 99.6 U
-3.0 +/- 51.3 U
Lanthanum-140 6.8 +/- 55.7 U
-14.7 +/- 25.8 U
Manganese-54 16.3 +/- 20.7 U
3.5 +/- 27.6 U
Manganese-54 4.1 +/- 15.3 U
14.6 +/- 15.1 U
Niobium-95 5.3 +/- 23.0 U
-8.5 +/- 31.7 U
Niobium-95
-13.9 +/- 24.0 U
-0.8 +/- 20.1 U
Potassium-40 11000.0 +/- 1030.0 19600.0 +/- 1590.0 Potassium-40 11800.0 +/- 905.0 12500.0 +/- 1010.0 Ruthenium-103 7.3 +/- 22.7 U
-9.1 +/- 22.8 U
Ruthenium-103
-10.2 +/- 19.4 U
2.2 +/- 17.7 U
Ruthenium-106
-77.5 +/- 175.0 U
31.4 +/- 223.0 U
Ruthenium-106
-68.5 +/- 162.0 U
88.7 +/- 155.0 U
Zinc-65 53.4 +/- 49.2 U
15.9 +/- 83.6 U
Zinc-65 10.5 +/- 47.1 U
-9.6 +/- 52.3 U
Zirconium-95
-27.0 +/- 43.2 U
26.2 +/- 56.7 U
Zirconium-95
-33.8 +/- 37.2 U
13.8 +/- 30.7 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 59 M-15 Montissippi Park Qtr 2 Qtr 4 (pCi/Kg, dry)
(pCi/Kg, dry)
Barium-140 105.0 +/- 187.0 U
14.5 +/- 84.5 U
Beryllium-7 378.0 +/- 296.0 UI 1090.0 +/- 293.0 Cerium-144
-10.3 +/- 95.5 U
-67.1 +/- 96.3 U
Cesium-134 11.8 +/- 20.4 U
37.2 +/- 32.1 UI Cesium-137 51.2 +/- 42.2 UI
-0.2 +/- 20.8 U
Cobalt-58
-1.1 +/- 19.6 U
0.1 +/- 16.6 U
-5.4 +/- 20.4 U
6.2 +/- 18.9 U
Iron-59
-1.7 +/- 46.9 U
-20.9 +/- 44.8 U
Lanthanum-140
-7.7 +/- 57.6 U
-4.0 +/- 25.8 U
Manganese-54 16.8 +/- 21.1 U
17.3 +/- 17.4 U
Niobium-95 5.2 +/- 24.9 U
3.7 +/- 19.2 U
Potassium-40 13400.0 +/- 1080.0 11600.0 +/- 869.0 Ruthenium-103 26.2 +/- 43.7 U
1.5 +/- 16.3 U
Ruthenium-106
-14.8 +/- 164.0 U
-137.0 +/- 137.0 U
Zinc-65
-3.0 +/- 79.8 U
3.4 +/- 49.8 U
Zirconium-95 62.2 +/- 41.8 U
5.1 +/- 31.5 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 60 TISSUE - FISH: GAMMA ISOTOPIC (pCi/Kg, wet)
M-8c Upstream of Plant M-9 Downstream of Plant June Sep June Sep Fish 1 Fish 2 Fish 2*
Fish 1 Fish 2 Fish 1*
Barium-140
-25.4 +/- 30.9 U
13.7 +/- 33.6 U
12.1 +/- 22.5 U
-0.3 +/- 37.1 U
12.2 +/- 41.3 U
6.1 +/- 32.0 U
Cerium-144 17.7 +/- 36.2 U
-9.0 +/- 37.7 U
-19.6 +/- 33.5 U
-7.0 +/- 34.6 U
-19.0 +/- 45.2 U
26.5 +/- 29.3 U
Cesium-134 4.8 +/- 7.8 U
-8.1 +/- 8.3 U
-2.8 +/- 7.1 U
5.3 +/- 8.5 U
8.7 +/- 8.6 U
3.3 +/- 6.2 U
Cesium-137 1.9 +/- 6.3 U
-1.5 +/- 7.9 U
-1.5 +/- 7.2 U
-0.4 +/- 8.8 U
9.0 +/- 8.5 U
1.7 +/- 6.4 U
Cobalt-58 1.3 +/- 6.9 U
1.0 +/- 6.8 U
0.3 +/- 6.8 U
-1.6 +/- 8.1 U
1.1 +/- 9.6 U
-3.2 +/- 6.1 U
Cobalt-60 0.4 +/- 7.2 U
3.2 +/- 7.5 U
1.9 +/- 5.6 U
3.6 +/- 8.3 U
-0.6 +/- 10.7 U
2.1 +/- 6.2 U
Iron-59
-7.1 +/- 13.1 U
2.0 +/- 12.3 U
3.9 +/- 11.6 U
3.9 +/- 20.6 U
-1.1 +/- 20.7 U
2.2 +/- 13.4 U
Lanthanum-140 6.2 +/- 9.4 U
-3.5 +/- 12.0 U
-6.0 +/- 7.9 U
-1.6 +/- 8.9 U
-6.9 +/- 15.1 U
-2.2 +/- 9.9 U
-2.8 +/- 7.0 U
3.1 +/- 7.6 U
-0.1 +/- 5.4 U
-1.3 +/- 7.1 U
4.3 +/- 7.1 U
2.4 +/- 6.3 U
Niobium-95 4.2 +/- 7.8 U
-4.4 +/- 8.0 U
-0.1 +/- 5.9 U
-1.4 +/- 8.9 U
24.5 +/- 8.1 U
1.1 +/- 5.8 U
Potassium-40 3770.0
+/-
374.0 3640.0
+/-
379.0 3460.0
+/-
372.0 3580.0
+/-
403.0 3730.0
+/-
446.0 3700.0
+/-
310.0 Zinc-65 8.8 +/- 16.2 U
11.2 +/- 16.0 U
0.4 +/- 16.7 U
-3.8 +/- 23.6 U
4.2 +/- 19.9 U
-5.2 +/- 14.2 U
Zirconium-95 4.6 +/- 11.9 U
-2.5 +/- 10.3 U
5.1 +/- 12.3 U
1.8 +/- 14.2 U
1.5 +/- 15.9 U
0.4 +/- 11.0 U
Note:
- The September fish samples were collected for one fish species only, smallmouth bass, because river water levels were too low for electrofishing. This is not a missed sample.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 61 TISSUE - PLANT: GAMMA ISOTOPIC pCi/Kg M-41 Training Center
- M-42 Biology Station Road
- Jul Aug Sep Jul Aug Sep Cesium-134
-6.5 +/- 21.4 U
10.2 +/- 14.1 U
8.5 +/- 12.8 U
-9.6 +/- 22.6 U
10.3 +/- 17.5 U
-0.7 +/- 12.6 U
-1.1 +/- 26.0 U
8.6 +/- 14.4 U
-9.1 +/- 12.2 U
14.0 +/- 25.1 U
-3.8 +/- 16.9 U
4.3 +/- 14.2 U
Cobalt-58
-20.3 +/- 21.2 U
-2.0 +/- 13.2 U
-3.4 +/- 10.7 U
14.3 +/- 21.8 U
-5.6 +/- 15.1 U
-7.3 +/- 12.5 U
-3.4 +/- 18.8 U
-1.0 +/- 15.1 U
4.4 +/- 11.6 U
2.3 +/- 23.9 U
-7.1 +/- 19.9 U
-9.7 +/- 14.0 U
Iodine-131 6.0 +/- 25.4 U
-8.6 +/- 20.9 U
16.7 +/- 17.4 U
-5.0 +/- 24.7 U
-1.7 +/- 24.7 U
5.2 +/- 16.3 U
Iron-59
-32.3 +/- 46.2 U
-29.6 +/- 30.5 U
4.9 +/- 22.1 U
-5.3 +/- 44.0 U
-7.6 +/- 34.2 U
-20.6 +/- 33.7 U
Manganese-54 8.5 +/- 28.2 U
1.1 +/- 14.7 U
3.9 +/- 11.9 U
4.9 +/- 22.5 U
-1.3 +/- 16.6 U
8.2 +/- 13.1 U
Niobium-95
-0.3 +/- 14.1 U
19.0 +/- 28.3 U
2.5 +/- 9.9 U
5.4 +/- 18.4 U
-0.1 +/- 16.3 U
9.4 +/- 14.2 U
Zinc-65
-12.5 +/- 43.7 U
-4.0 +/- 35.8 U
-8.8 +/- 26.9 U
-37.2 +/- 46.4 U
2.8 +/- 36.3 U
3.4 +/- 33.1 U
pCi/Kg M-43 Imholte Farm*
Jul Aug Sep Cesium-134 28.0 +/- 26.0 U
10.5 +/- 16.1 U
46.2 +/- 60.7 UI Cesium-137 28.4 +/- 51.6 U
-4.2 +/- 17.5 U
7.0 +/- 13.0 U
Cobalt-58
-0.7 +/- 22.7 U
-4.9 +/- 12.9 U
-1.0 +/- 13.1 U
-11.5 +/- 25.1 U
4.3 +/- 11.8 U
-5.6 +/- 11.3 U
-1.6 +/- 26.5 U
-16.9 +/- 19.2 U
21.6 +/- 25.4 U
Iron-59 30.2 +/- 57.6 U
-15.3 +/- 30.1 U
26.4 +/- 40.5 U
-1.9 +/- 23.6 U
2.7 +/- 16.0 U
4.8 +/- 13.6 U
Niobium-95
-10.1 +/- 25.7 U
0.7 +/- 13.2 U
-2.4 +/- 13.8 U
Zinc-65
-8.9 +/- 44.6 U
24.1 +/- 29.9 U
-5.1 +/- 27.7 U
Note:
- June vegetation samples were collected but not shipped to the lab for analysis. This is considered a missed sample (Condition Report 501000075372).
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 62 WATER: TRITIUM pCi/L Qtr 1 Qtr 2 Qtr 3 Qtr 4*
M-11 City of Monticello
-60.6 +/- 189 U
291 +/- 225 U
-10.1 +/- 190 U
-117 +/- 257 U
M-12 Plant Well #11 215 +/- 224 U
61.1 +/- 206 U
-98.9 +/- 184 U
-110 +/- 279 U
M-14 City of Minneapolis1
-24.2 +/- 194 U
22.2 +/- 147 U
118 +/- 212 U
-96.2 +/- 262 U
M-43 Imholte Farm 19.8 +/- 202 U
234 +/- 222 U
213 +/- 222 U
-188 +/- 267 U
M-55 Hasbrouck Residence 235 +/- 226 U
73.6 +/- 221 U
210 +/- 216 U
-144 +/- 247 U
M-8 Upstream of Plant 29.5 +/- 112 U
-48.0 +/- 218 U
-181 +/- 217 U
-68.8 +/- 279 U
M-9 Downstream of Plant
-5.10 +/- 106 U
-142 +/- 222 U
-260 +/- 208 U
-185 +/- 281 U
Note:
- Q4 2022 composite sample collection continued into January 3, 2023. These data were provided in the 2022 AREOR and are not discussed in this 2023 AREOR.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 63 WATER - DRINKING: GROSS BETA M-14 City of Minneapolis Gross Beta (pCi/L)
Jan
-4.070 +/- 1.760 U
Feb 1.610 +/- 1.790 U
Mar 27.900 +/- 1.870 U
Apr
-2.950 +/- 1.710 U
May
-3.560 +/- 1.970 M
Jun 9.510 +/- 2.150 U
Jul
-2.160 +/- 1.400 U
Aug
-7.310 +/- 1.850 U
Sep
-1.290 +/- 2.130 U
Oct 13.900 +/- 1.940 U
Nov 3.040 +/- 2.310 U
Dec 4.460 +/- 1.530 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 64 WATER - GROUNDWATER: GAMMA ISOTOPIC M-11 City of Monticello Qtr 1 (pCi/L)
Qtr 2 (pCi/L)
Qtr 3 (pCi/L)
Qtr 4 (pCi/L)
Barium-140 1.28E+00 +/- 1.22E+01 U
-2.34E+00 +/- 1.75E+01 U
-7.70E-01 +/- 1.84E+01 U
2.42E+00 +/- 2.06E+01 U
Cerium-144 1.94E-01 +/- 1.54E+01 U
-1.17E+01 +/- 1.65E+01 U
-2.02E+01 +/- 1.72E+01 U
7.19E+00 +/- 1.30E+01 U
Cesium-134
-5.85E-01 +/- 2.39E+00 U
-2.62E-01 +/-2.57E+00 U
-2.43E-01 +/- 3.77E+00 U
1.27E+00 +/- 2.28E+00 U
-2.80E+00 +/- 2.24E+00 U
-2.96E-01 +/- 2.45E+00 U
-5.23E-02 +/- 3.44E+00 U
4.51E-01 +/- 2.11E+00 U
Cobalt-58
-1.19E+00 +/- 2.65E+00 U
4.50E+00 +/- 3.82E+00 U
-4.74E-01 +/- 3.23E+00 U
-1.86E+00 +/- 2.23E+00 U
-8.15E-01 +/- 2.14E+00 U
-2.03E-01 +/- 2.78E+00 U
3.79E-01 +/- 3.65E+00 U
2.53E-01 +/- 2.12E+00 U
Iron-59 5.95E+00 +/- 8.95E+00 U
4.68E+00 +/- 6.07E+00 U
-5.70E-01 +/- 6.20E+00 U
4.27E+00 +/- 4.34E+00 U
Lanthanum-140
-2.36E+00 +/- 3.76E+00 U
7.46E-01 +/- 6.92E+00 U
-5.12E+00 +/- 8.02E+00 U
-3.78E+00 +/- 7.14E+00 U
-1.79E+00 +/- 2.14E+00 U
-9.00E-01 +/- 2.52E+00 U
-2.23E+00 +/- 3.57E+00 U
-1.96E+00 +/- 2.27E+00 U
Niobium-95
-7.60E-01 +/- 2.70E+00 U
7.79E-01 +/- 2.83E+00 U
-7.96E-01 +/- 3.26E+00 U
-1.75E+00 +/- 2.56E+00 U
Zinc-65 5.17E-01 +/- 4.86E+00 U
2.42E+00 +/- 6.16E+00 U
-5.10E+00 +/- 7.63E+00 U
-1.06E+00 +/- 4.39E+00 U
Zirconium-95 3.33E-01 +/- 3.61E+00 U
2.84E+00 +/- 4.13E+00 U
-2.73E+00 +/- 6.58E+00 U
1.51E-01 +/- 4.53E+00 U
M-12 Plant Well #11 Qtr 1 (pCi/L)
Qtr 2 (pCi/L)
Qtr 3 (pCi/L)
Qtr 4 (pCi/L)
Barium-140 7.63E+00 +/- 1.16E+01 U
-2.45E-01 +/- 1.85E+01 U
1.16E+01 +/- 1.40E+01 U
-2.64E+00 +/- 1.91E+01 U
Cerium-144
-2.88E-01 +/- 1.77E+01 U
3.27E+00 +/- 1.68E+01 U
3.42E+00 +/- 1.60E+01 U
1.90E+00 +/- 1.28E+01 U
Cesium-134 4.93E-01 +/- 2.59E+00 U
-1.21E+00 +/- 2.53E+00 U
2.28E+00 +/- 2.63E+00 U
-1.78E+00 +/- 2.55E+00 U
Cesium-137 3.20E+00 +/- 5.04E+00 U
9.36E-02 +/- 2.72E+00 U
1.35E-01 +/- 2.65E+00 U
-7.39E-01 +/- 1.77E+00 U
Cobalt-58
-1.83E+00 +/- 2.32E+00 U
-1.49E+00 +/- 2.19E+00 U
-2.75E-01 +/- 2.42E+00 U
6.96E-01 +/- 2.19E+00 U
Cobalt-60 4.48E-01 +/- 2.62E+00 U
-2.65E+00 +/- 2.54E+00 U
2.68E-01 +/- 2.88E+00 U
-4.73E-01 +/- 1.56E+00 U
Iron-59
-1.02E+00 +/- 4.14E+00 U
3.88E-01 +/- 4.84E+00 U
-1.17E+00 +/- 4.93E+00 U
3.23E+00 +/- 5.11E+00 U
Lanthanum-140
-1.77E-01 +/- 4.81E+00 U
-4.77E+00 +/- 4.78E+00 U
1.17E+00 +/- 4.19E+00 U
-8.51E-01 +/- 6.86E+00 U
Manganese-54 2.26E+00 +/- 2.20E+00 U
-5.14E-01 +/- 2.60E+00 U
1.06E+00 +/- 2.29E+00 U
-3.79E-01 +/- 2.13E+00 U
Niobium-95
-2.84E+00 +/- 2.93E+00 U
-6.39E-01 +/- 2.41E+00 U
1.60E-02 +/- 3.11E+00 U
8.37E-01 +/- 2.32E+00 U
Zinc-65
-2.13E+00 +/- 5.15E+00 U
-2.23E+00 +/- 5.20E+00 U
-3.64E+00 +/- 7.05E+00 U
-1.62E+00 +/- 4.04E+00 U
Zirconium-95
-1.87E+00 +/- 4.38E+00 U
-1.73E+00 +/- 4.15E+00 U
2.80E+00 +/- 4.63E+00 U
4.82E-01 +/- 3.85E+00 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 65 M-43 Imholte Farm Qtr 1 (pCi/L)
Qtr 2 (pCi/L)
Qtr 3 (pCi/L)
Qtr 4 (pCi/L)
Barium-140
-5.45E+00 +/- 1.54E+01 U
-3.83E+00 +/- 1.61E+01 U
-2.19E+00 +/- 1.02E+01 U
-3.13E+00 +/- 2.21E+01 U
Cerium-144 8.44E+00 +/- 1.83E+01 U
1.20E+00 +/- 1.82E+01 U
6.14E+00 +/- 1.32E+01 U
-5.08E-01 +/- 1.34E+01 U
Cesium-134
-7.03E-01 +/- 3.10E+00 U
6.52E-01 +/- 2.65E+00 U
1.95E+00 +/- 4.56E+00 U
-6.50E-01 +/- 2.05E+00 U
-2.51E-01 +/- 2.72E+00 U
2.18E+00 +/- 4.35E+00 U
4.43E-01 +/- 2.06E+00 U
-1.11E+00 +/- 2.11E+00 U
Cobalt-58
-3.24E-01 +/- 2.22E+00 U
1.53E+00 +/- 2.95E+00 U
5.95E-01 +/- 1.82E+00 U
-1.30E+00 +/- 2.36E+00 U
Cobalt-60 1.22E+00 +/- 3.37E+00 U
-1.10E+00 +/- 2.59E+00 U
3.24E-01 +/- 1.85E+00 U
-5.66E-01 +/- 1.77E+00 U
Iron-59
-5.58E+00 +/- 5.56E+00 U
2.26E+00 +/- 4.49E+00 U
1.82E+00 +/- 3.45E+00 U
-2.84E+00 +/- 4.65E+00 U
Lanthanum-140 3.57E+00 +/- 4.22E+00 U
-1.53E+00 +/- 4.90E+00 U
2.03E+00 +/- 4.31E+00 U
-4.18E+00 +/- 6.98E+00 U
-1.20E+00 +/- 3.02E+00 U
-7.78E-01 +/- 2.46E+00 U
-2.66E+00 +/- 2.04E+00 U
1.31E+00 +/- 1.77E+00 U
Niobium-95 1.58E+00 +/- 2.23E+00 U
-1.80E+00 +/- 4.05E+00 U
-1.23E+00 +/- 2.37E+00 U
1.75E-01 +/- 2.18E+00 U
Zinc-65 1.57E+00 +/- 6.36E+00 U
6.50E+00 +/- 4.06E+00 U
1.93E+00 +/- 4.97E+00 U
-1.58E+00 +/- 4.56E+00 U
Zirconium-95 3.38E+00 +/- 5.26E+00 U
-1.12E+00 +/- 4.86E+00 U
2.50E+00 +/- 3.40E+00 U
-3.39E+00 +/- 3.91E+00 U
M-55 Hasbrouck Residence Qtr 1 (pCi/L)
Qtr 2 (pCi/L)
Qtr 3 (pCi/L)
Qtr 4 (pCi/L)
Barium-140 2.57E+00 +/- 1.30E+01 U
8.59E+00 +/- 1.37E+01 U
1.08E+01 +/- 1.02E+01 U
1.09E+01 +/- 2.12E+01 U
Cerium-144
-3.33E+00 +/- 1.58E+01 U
-1.96E+00 +/- 1.38E+01 U
-8.19E+00 +/- 1.35E+01 U
-4.13E-01 +/- 1.59E+01 U
Cesium-134
-1.19E+00 +/- 3.53E+00 U
1.73E+00 +/- 2.34E+00 U
1.34E+00 +/- 1.82E+00 U
2.40E+00 +/- 2.89E+00 U
Cesium-137 1.50E+00 +/- 2.59E+00 U
6.57E-01 +/- 2.15E+00 U
2.82E+00 +/- 3.95E+00 U
1.68E+00 +/- 3.41E+00 U
Cobalt-58 9.51E-01 +/- 2.62E+00 U
9.58E-01 +/- 2.00E+00 U
-2.67E-01 +/- 2.18E+00 U
1.10E+00 +/- 2.33E+00 U
Cobalt-60 3.24E+00 +/- 3.13E+00 U
1.35E-01 +/- 1.90E+00 U
1.79E+00 +/- 2.86E+00 U
1.41E-01 +/- 2.01E+00 U
Iron-59 1.69E+00 +/- 5.49E+00 U
-4.02E-01 +/- 5.31E+00 U
-1.73E-01 +/- 4.54E+00 U
-9.52E-01 +/- 4.86E+00 U
Lanthanum-140
-5.82E-01 +/- 4.54E+00 U
-4.44E-01 +/- 5.00E+00 U
2.30E+00 +/- 3.37E+00 U
-4.85E+00 +/- 7.87E+00 U
-3.92E-01 +/- 2.63E+00 U
1.06E-01 +/- 1.54E+00 U
-8.80E-01 +/- 2.35E+00 U
1.49E+00 +/- 2.13E+00 U
Niobium-95 1.58E+00 +/- 3.20E+00 U
8.65E-01 +/- 2.11E+00 U
-1.36E+00 +/- 2.29E+00 U
1.06E+00 +/- 2.72E+00 U
Zinc-65
-5.94E-03 +/- 6.64E+00 U
1.52E+00 +/- 4.10E+00 U
-7.98E-01 +/- 5.78E+00 U
-5.24E-01 +/- 3.72E+00 U
Zirconium-95
-3.32E+00 +/- 4.92E+00 U
1.15E+00 +/- 3.55E+00 U
1.03E+00 +/- 2.65E+00 U
6.58E-01 +/- 4.46E+00 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 66 WATER - DRINKING: GAMMA ISOTOPIC M-14 City of Minneapolis pCi/L Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Barium-140
-2.620 +/-
20.100 U
-1.500 +/-
13.800 U
8.930 +/-
12.100 U
-1.860 +/-
8.210 U
-9.800 +/-
17.000 U
4.980 +/-
14.100 U
2.630 +/-
18.100 U
6.410 +/-
15.200 U
0.517 +/-
4.970 U
5.660 +/-
24.000 U
4.160 +/-
20.300 U
5.830 +/-
16.900 U
Cerium-144
-4.070 +/-
1.760 U
1.610 +/-
1.790 U
27.900 +/-
1.870 UI
-2.950 +/-
1.710 U
-3.560 +/-
1.970 U
9.510 +/-
2.150 U
-2.160 +/-
1.400 U
-7.310 +/-
1.850 U
-1.290 +/-
2.130 U
13.900 +/-
1.940 U
3.040 +/-
2.310 U
4.460 +/-
1.530 U
Cesium-134 1.990 +/-
20.500 U
1.590 +/-
15.700 U
-0.937 +/-
25.900 U
-0.794 +/-
5.150 U
0.643 +/-
11.400 U
-0.228 +/-
14.400 U
2.950 +/-
15.000 U
0.323 +/-
17.800 U
-0.258 +/-
6.700 U
-0.260 +/-
16.200 U
0.818 +/-
17.600 U
0.609 +/-
7.810 U
-0.456 +/-
3.100 U
0.175 +/-
2.150 U
-0.633 +/-
2.030 U
-0.202 +/-
1.250 U
-0.386 +/-
3.520 U
-1.210 +/-
2.270 U
-1.270 +/-
2.580 U
5.780 +/-
2.640 UI 0.858 +/-
1.020 U
0.670 +/-
3.880 U
1.950 +/-
3.690 U
0.009 +/-
0.895 U
Cobalt-58
-2.010 +/-
2.760 U
-0.063 +/-
2.280 U
1.470 +/-
2.230 U
-0.025 +/-
0.807 U
-1.090 +/-
2.760 U
-0.526 +/-
2.710 U
-0.760 +/-
2.740 U
-0.046 +/-
3.250 U
0.104 +/-
1.100 U
1.490 +/-
3.530 U
-0.939 +/-
3.490 U
-0.646 +/-
0.719 U
-0.501 +/-
2.870 U
0.616 +/-
2.330 U
0.000 +/-
2.140 U
-0.028 +/-
0.969 U
1.700 +/-
2.910 U
0.828 +/-
2.680 U
-2.190 +/-
2.590 U
1.020 +/-
2.570 U
-0.560 +/-
1.030 U
0.683 +/-
3.860 U
-1.740 +/-
3.660 U
0.504 +/-
1.020 U
Iron-59
-3.780 +/-
2.660 U
-1.820 +/-
2.530 U
0.560 +/-
1.660 U
-1.240 +/-
0.943 U
3.290 +/-
3.410 U
-0.735 +/-
1.990 U
-1.060 +/-
3.510 U
2.760 +/-
2.290 U
-0.268 +/-
0.988 U
-3.840 +/-
3.700 U
6.510 +/-
4.080 U
-0.143 +/-
0.869 U
Lanthanum-140 1.270 +/-
6.370 U
2.320 +/-
4.930 U
-3.110 +/-
4.180 U
-1.600 +/-
2.120 U
0.838 +/-
5.570 U
1.140 +/-
4.530 U
-2.880 +/-
6.470 U
-2.950 +/-
5.670 U
-1.350 +/-
1.800 U
-0.917 +/-
8.240 U
-1.920 +/-
8.610 U
-2.550 +/-
2.350 U
Manganese-54 0.661 +/-
4.930 U
2.000 +/-
4.290 U
-1.500 +/-
4.510 U
0.721 +/-
2.880 U
-0.241 +/-
7.340 U
0.676 +/-
3.180 U
-1.150 +/-
7.610 U
0.753 +/-
7.470 U
0.931 +/-
2.240 U
2.890 +/-
8.080 U
0.232 +/-
7.800 U
0.744 +/-
6.050 U
Niobium-95 0.177 +/-
2.650 U
-2.530 +/-
2.410 U
-1.250 +/-
1.930 U
0.836 +/-
0.818 U
1.180 +/-
2.500 U
0.709 +/-
2.380 U
1.460 +/-
2.530 U
0.028 +/-
2.020 U
-1.340 +/-
0.927 U
-3.350 +/-
3.760 U
0.276 +/-
2.960 U
-0.106 +/-
0.765 U
Zinc-65 0.840 +/-
3.660 U
1.970 +/-
2.480 U
-1.170 +/-
2.630 U
-1.250 +/-
0.940 U
-1.610 +/-
3.130 U
-0.554 +/-
2.220 U
0.268 +/-
2.930 U
0.101 +/-
2.810 U
-1.530 +/-
1.660 U
6.090 +/-
4.780 U
-4.010 +/-
3.560 U
-0.248 +/-
1.060 U
Zirconium-95
-0.393 +/-
5.460 U
-1.760 +/-
4.960 U
0.278 +/-
3.640 U
-1.260 +/-
1.580 U
3.390 +/-
6.230 U
-1.040 +/-
5.610 U
-1.440 +/-
5.360 U
0.442 +/-
4.400 U
-0.493 +/-
2.690 U
0.664 +/-
7.000 U
8.390 +/-
7.000 U
-2.220 +/-
1.710 U
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 67 WATER - SURFACE: GAMMA ISOTOPIC M-8 Upstream of Plant pCi/L Jan1 Feb1 Mar Apr May Jun Jul Aug Sep Oct Nov Dec Barium-140 11.600 +/-
21.600 U
-9.310 +/-
20.900 hU
-3.650 +/-
15.900 U
18.600 +/-
16.700 U
1.040 +/-
22.300 U
-9.890 +/-
37.400 U
-15.100 +/-
14.400 U
-4.570 +/-
12.000 U
-13.100 +/-
40.300 U
-13.000 +/-
13.600 U
Cerium-144 1.810 +/-
6.120 U
9.370 +/-
14.900 hU
-3.890 +/-
18.300 U
12.400 +/-
14.000 U
-7.170 +/-
16.700 U
-2.090 +/-
5.950 U
-2.140 +/-
5.420 U
3.000 +/-
16.000 U
2.830 +/-
6.460 U
-2.730 +/-
12.800 U
Cesium-134
-0.159 +/-
0.901 U
1.210 +/-
2.210 hU 1.660 +/-
4.340 U
-1.640 +/-
2.550 U
2.350 +/-
2.300 U
0.742 +/-
0.966 U
1.540 +/-
1.640 UI
-0.196 +/-
2.460 U
-1.080 +/-
1.550 U
-0.972 +/-
2.010 U
Cesium-137 0.097 +/-
1.510 U
-0.974 +/-
2.420 hU 3.830 +/-
3.640 U
0.695 +/-
2.070 U
-0.583 +/-
2.520 U
-0.071 +/-
0.872 U
0.423 +/-
0.851 U
0.152 +/-
2.810 U
0.597 +/-
0.821 U
1.010 +/-
2.300 U
Cobalt-58 0.037 +/-
0.995 U
2.210 +/-
2.390 hU
-0.476 +/-
2.740 U
1.080 +/-
2.170 U
1.160 +/-
2.870 U
0.886 +/-
1.370 U
-0.503 +/-
1.020 U
-0.270 +/-
2.270 U
0.213 +/-
1.210 U
-0.122 +/-
2.020 U
-0.859 +/-
1.460 U
-0.582 +/-
1.920 hU 0.668 +/-
3.030 U
0.591 +/-
2.180 U
-1.790 +/-
1.870 U
0.654 +/-
0.949 U
0.331 +/-
0.775 U
-0.161 +/-
2.050 U
1.060 +/-
1.970 U
0.792 +/-
1.830 U
Iron-59 1.600 +/-
2.490 U
-0.251 +/-
4.410 hU 0.230 +/-
5.210 U
1.030 +/-
4.710 U
-0.288 +/-
4.640 U
-1.930 +/-
6.390 U
0.868 +/-
1.760 U
3.050 +/-
4.090 U
-1.610 +/-
3.400 U
-0.305 +/-
4.230 U
Lanthanum-140
-3.010 +/-
4.340 U
-5.800 +/-
7.660 hU
-1.320 +/-
6.570 U
-1.440 +/-
3.320 U
-2.360 +/-
7.480 U
3.420 +/-
13.900 U
0.685 +/-
2.490 U
1.080 +/-
4.230 U
-3.610 +/-
9.730 U
0.248 +/-
4.300 U
-1.580 +/-
0.946 U
-0.260 +/-
2.070 hU
-1.620 +/-
2.830 U
1.350 +/-
2.210 U
2.070 +/-
2.150 U
-0.447 +/-
1.060 U
0.997 +/-
0.846 U
1.220 +/-
2.040 U
-0.094 +/-
1.030 U
0.934 +/-
1.830 U
Niobium-95 1.510 +/-
1.100 U
-0.345 +/-
2.570 hU
-1.780 +/-
3.440 U
-0.242 +/-
2.720 U
-1.450 +/-
2.770 U
-0.679 +/-
1.360 U
-0.002 +/-
0.924 U
3.350 +/-
3.060 U
0.027 +/-
1.120 U
-0.126 +/-
2.170 U
Zinc-65
-0.259 +/-
1.850 U
2.090 +/-
4.500 hU
-2.020 +/-
6.120 U
-1.070 +/-
4.460 U
3.490 +/-
4.050 U
1.340 +/-
2.110 U
0.043 +/-
1.700 U
1.280 +/-
4.020 U
0.727 +/-
2.170 U
2.080 +/-
4.160 U
Zirconium-95 0.256 +/-
2.010 U
1.760 +/-
4.180 hU 3.180 +/-
5.100 U
3.870 +/-
3.980 U
0.349 +/-
4.890 U
3.220 +/-
2.320 U
2.290 +/-
1.690 U
2.930 +/-
4.220 U
-0.837 +/-
2.110 U
-0.533 +/-
3.180 U
Note:
1 Sample unavailable due to unsafe condition for sampling resulting from frozen river conditions (Condition Report 501000069833).
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 68 M-9 Downstream of Plant pCi/L Jan1 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Barium-140 321.000
+/-
344.000
-26.200 +/-
132.000 U
-7.170 +/-
12.700 U
-0.660 +/-
24.800 hU
-5.590 +/-
15.400 U
-0.805 +/-
15.300 U
4.330 +/-
19.600 U
29.200 +/-
36.700 U
6.240 +/-
8.690 U
8.210 +/-
11.900 U
8.630 +/-
23.000 U
6.260 +/-
11.800 U
Cerium-144 1.630 +/-
6.020 U
1.230 +/-
9.520 U
6.180 +/-
5.990 U
-3.090 +/-
15.400 hU
-12.000 +/-
15.800 U
7.480 +/-
13.000 U
-3.400 +/-
13.800 U
-3.250 +/-
5.470 U
0.126 +/-
6.290 U
-5.180 +/-
13.100 U
-2.360 +/-
7.310 U
-3.510 +/-
12.500 U
Cesium-134
-0.159 +/-
0.810 U
-0.862 +/-
1.890 U
-0.337 +/-
1.000 U
1.540 +/-
2.590 hU
-3.800 +/-
2.260 U
1.050 +/-
1.970 U
-0.295 +/-
2.220 U
0.160 +/-
0.966 U
0.146 +/-
0.870 U
0.246 +/-
2.780 U
-0.099 +/-
1.440 U
0.202 +/-
2.090 U
Cesium-137 0.034 +/-
0.748 U
1.740 +/-
1.270 U
-1.010 +/-
1.660 U
3.140 +/-
3.850 hU
-0.921 +/-
1.930 U
0.453 +/-
1.860 U
1.560 +/-
2.270 U
0.355 +/-
0.991 U
0.322 +/-
0.898 U
-1.630 +/-
2.180 U
1.160 +/-
1.100 U
1.120 +/-
1.940 U
Cobalt-58
-0.185 +/-
1.550 U
0.002 +/-
1.890 U
0.895 +/-
1.070 U
-0.211 +/-
2.900 hU
-0.095 +/-
2.310 U
-0.652 +/-
2.180 U
-0.937 +/-
2.070 U
-0.992 +/-
1.150 U
-0.302 +/-
0.944 U
1.040 +/-
2.200 U
0.339 +/-
0.959 U
0.684 +/-
1.970 U
-0.350 +/-
0.694 U
0.469 +/-
1.210 U
0.574 +/-
1.350 U
-0.774 +/-
2.640 hU
-0.408 +/-
2.090 U
-0.198 +/-
2.120 U
-1.250 +/-
2.230 U
-0.085 +/-
0.959 U
0.631 +/-
0.964 U
0.681 +/-
2.090 U
-0.142 +/-
0.774 U
0.048 +/-
1.800 U
Iron-59
-2.850 +/-
5.120 U
0.026 +/-
5.440 U
-1.780 +/-
2.340 U
-0.407 +/-
5.820 hU 0.804 +/-
4.910 U
4.650 +/-
6.950 U
3.850 +/-
6.430 U
-1.280 +/-
3.960 U
-0.924 +/-
2.140 U
0.172 +/-
4.050 U
-1.200 +/-
2.740 U
2.340 +/-
3.960 U
Lanthanum-140
-103.000
+/-
126.000 U
-8.620 +/-
41.100 U
1.240 +/-
4.300 U
3.030 +/-
6.400 hU
-3.980 +/-
4.690 U
-3.640 +/-
5.190 U
4.520 +/-
5.720 U
2.730 +/-
12.400 U
-2.340 +/-
2.740 U
1.580 +/-
4.550 U
-0.558 +/-
9.260 U
2.530 +/-
4.840 U
-0.520 +/-
0.997 U
-0.387 +/-
1.240 U
-0.779 +/-
1.000 U
0.591 +/-
2.570 hU 2.520 +/-
2.640 U
0.856 +/-
1.780 U
-1.540 +/-
2.100 U
-0.569 +/-
0.834 U
-0.209 +/-
1.220 U
-0.714 +/-
2.270 U
-0.178 +/-
0.715 U
1.050 +/-
1.710 U
Niobium-95 0.272 +/-
1.800 U
8.190 +/-
3.510 UI 0.267 +/-
1.200 U
1.360 +/-
2.770 hU
-0.698 +/-
2.480 U
-1.860 +/-
2.340 U
-1.090 +/-
2.200 U
0.729 +/-
1.440 U
0.126 +/-
0.991 U
-0.225 +/-
2.350 U
-0.151 +/-
0.979 U
1.850 +/-
2.030 U
Zinc-65 0.003 +/-
1.700 U
1.150 +/-
4.340 U
-0.879 +/-
1.940 U
1.730 +/-
5.090 hU 2.170 +/-
4.590 U
-2.250 +/-
4.140 U
0.402 +/-
4.570 U
-0.248 +/-
2.270 U
0.363 +/-
2.200 U
-0.255 +/-
4.120 U
0.100 +/-
1.670 U
10.300 +/-
5.640 U
Zirconium-95 2.190 +/-
3.210 U
0.030 +/-
3.750 U
2.430 +/-
1.960 U
-1.970 +/-
4.740 hU
-0.802 +/-
3.470 U
1.230 +/-
3.750 U
-1.790 +/-
6.230 U
-0.145 +/-
2.650 U
0.000 +/-
1.710 U
-1.580 +/-
3.510 U
0.669 +/-
1.820 U
-2.810 +/-
3.320 U
Note:
12022 December M9 data were collected at the beginning of January. These data were provided in the 2022 AREOR and are not discussed in this 2023 AREOR.
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 69 Data below were analyzed by EDC. The results reported relate only to the items tested and to the sample as received by the laboratory. The raw TLD results are corrected for individual element sensitivity and reader sensitivity and determined by QC results. Transit exposures are subtracted and the fade of the thermoluminescent response is compensated. The abbreviations common to each of the EDC analytical results tables are provided below.
Abbreviations ISFSI Independent Spent Fuel Storage Installation TLD Thermoluminescent Dosimeter mR/Std. Qtr Millirem per standard quarter (91 days)
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 70 DIRECT RADIATION - TLD: GAMMA mrem/91 day Qtr 1 Qtr 2 Qtr 3 Qtr 4 Control M01C Kirchenbauer Farm 9.9 +/- 0.6 12.5 +/- 0.7 14.4 +/- 0.7 13.5 +/- 0.6 M02C Cty Rd 4 & 15 10.2 +/- 0.5 11.9 +/- 0.9 13.9 +/- 0.6 12.2 +/- 0.6 M03C Cty Rd 19 & Jason Ave 11.2 +/- 0.6 13.4 +/- 0.9 15.3 +/- 0.9 13.4 +/- 0.6 M04C Maple Lake Water Tower 9.9 +/- 0.5 12.3 +/- 0.9 13.8 +/- 0.8 12.9 +/- 0.6 Inner M01A Sherburne Ave. So.1 12.8 +/- 0.5 14.8 +/- 0.9 17.9 +/- 1.2 25.3 +/- 1.4 M02A Sherburne Ave. So.
12.4 +/- 0.6 14.6 +/- 0.9 16.7 +/- 1.3 15.1 +/- 0.7 M03A Sherburne Ave. So.
11.1 +/- 0.7 14.5 +/- 0.9 15.6 +/- 1.0 14.7 +/- 0.7 M04A Biology Station Rd.
10.8 +/- 0.9 13.2 +/- 1.0 15.3 +/- 0.9 12.7 +/- 0.6 M05A Biology Station Rd.
10.1 +/- 0.7 13.5 +/- 0.9 15.7 +/- 1.1 13.5 +/- 0.9 M06A Biology Station Rd.
10.5 +/- 0.6 14.7 +/- 0.8 16.7 +/- 0.7 14.5 +/- 0.7 M07A Parking Lot H 10.4 +/- 0.4 13.4 +/- 0.8 15.2 +/- 0.6 14.2 +/- 0.8 M08A Parking Lot F 10.9 +/- 0.7 13.9 +/- 0.8 15.5 +/- 0.7 14.2 +/- 0.9 M09A County Road 75 10.6 +/- 0.8 14.5 +/- 0.9 15.7 +/- 0.8 15.1 +/- 0.6 M10A County Road 75 10.6 +/- 0.6 14.3 +/- 0.7 15.7 +/- 1.2 14.6 +/- 0.6 M11A County Road 75 2 13.9 +/- 0.9 17.5 +/- 1.3 17.5 +/- 1.3 14.8 +/- 0.8 M12A County Road 75 12.0 +/- 0.7 14.2 +/- 1.0 15.3 +/- 1.0 15.2 +/- 0.9 M13A North Boundary Rd.
See Note 3 11.3 +/- 0.8 12.7 +/- 0.6 11.8 +/- 0.8 M14A North Boundary Rd.
12.5 +/- 0.6 15.2 +/- 1.0 17.2 +/- 1.0 16.0 +/- 0.8 Outer M01B 117th Street 10.2 +/- 0.7 13.3 +/- 0.6 17.3 +/- 1.2 13.9 +/- 0.9 M02B County Road 11 11.1 +/- 0.8 13.3 +/- 0.8 17.7 +/- 1.2 14.4 +/- 0.7 M03B County Rd. 73 & 81 10.1 +/- 0.6 10.9 +/- 0.7 16.1 +/- 1.5 12.1 +/- 0.7 M04B County Rd. 73 (196th Street) 10.2 +/- 0.6 12.5 +/- 0.8 17.1 +/- 1.2 13.2 +/- 0.6 M05B City of Big Lake 11.5 +/- 0.7 13.0 +/- 0.7 19.2 +/- 1.6 14.1 +/- 1.0 M06B County Rd 14 & 196th Street See Note 3 13.7 +/- 0.7 19.0 +/- 1.2 14.6 +/- 1.0 M07B Monticello Industrial Dr.
11.7 +/- 0.6 13.7 +/- 0.8 17.8 +/- 1.0 14.2 +/- 0.6 M08B Residence Hwy 25 & Davidson Ave 11.7 +/- 0.7 13.6 +/- 0.8 15.1 +/- 1.8 12.9 +/- 0.6 M09B Weinand Farm 10.8 +/- 0.5 15.0 +/- 0.9 17.6 +/- 1.2 14.3 +/- 0.8 M10B Reisewitz Farm - Acacia Ave 9.9 +/- 0.6 13.8 +/- 0.8 16.0 +/- 0.8 14.0 +/- 0.8 M11B Vanlith Farm - 97th Ave 10.1 +/- 0.7 14.7 +/- 0.7 16.3 +/- 0.6 14.7 +/- 0.8 M12B Lake Maria St. Park 10.1 +/- 0.6 14.4 +/- 0.9 15.8 +/- 0.6 14.4 +/- 0.9 Notes:
1 4th Quarter REMP TLD M01A result was higher than baseline for this area by 10.2 mrem. This high result is likely due to construction in the area (Condition Report 501000082357).
2 TLD left out for two subsequent quarters (Condition Report 501000072555).
3 Location could not be sampled due to missing TLD (Condition Report 501000072135).
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 71 mrem/91 day Qtr 1 Qtr 2 Qtr 3 Qtr 4 Outer M13B Bridgewater Sta.
12.0 +/- 0.6 13.7 +/- 0.7 16.3 +/- 0.8 14.3 +/- 0.7 M14B Anderson Res. - Cty Rd 111 11.6 +/- 0.5 14.4 +/- 0.7 16.5 +/- 0.7 14.5 +/- 0.8 M15B Barton Ave NW 10.2 +/- 0.8 13.7 +/- 1.0 15.0 +/- 0.6 13.1 +/- 0.7 M16B University Ave and Hancock St, Becker 10.4 +/- 0.7 13.1 +/- 0.8 15.1 +/- 0.7 13.6 +/- 0.7 Special Interest mrem/91 day Qtr 1 Qtr 2 Qtr 3 Qtr 4 M01S 127th St. NE 11.3 +/- 0.7 14.5 +/- 0.7 16.0 +/- 1.5 14.2 +/- 0.8 M02S Krone Residence 11.0 +/- 0.9 14.8 +/- 1.8 16.8 +/- 1.5 15.0 +/- 0.9 M03S Big Oaks Park 11.8 +/- 0.9 14.9 +/- 0.8 17.2 +/- 1.5 15.1 +/- 0.7 M04S Pinewood School 10.1 +/- 0.5 10.7 +/- 0.7 16.3 +/- 1.2 12.5 +/- 0.6 M05S 20500 Co. Rd 11, Big Lake 10.0 +/- 0.8 11.4 +/- 0.7 14.4 +/- 0.7 11.8 +/- 0.5 M06S Monticello Public Works 11.4 +/- 0.8 13.9 +/- 0.7 15.8 +/- 0.7 14.9 +/- 0.7 I-11 OCA Fence South, on exit road 11.5 +/- 0.6 14.3 +/- 0.9 16.8 +/- 0.9 13.9 +/- 0.8 I-12 OCA Fence Middle, on exit road 11.6 +/- 0.7 13.6 +/- 1.0 15.4 +/- 0.6 13.7 +/- 0.8 I-13 OCA Fence North, on exit road 12.9 +/- 0.6 14.1 +/- 0.7 15.8 +/- 0.6 15.6 +/- 0.8
2023 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MONTICELLO NUCLEAR GENERATING PLANT arcadis.com 72 DIRECT RADIATION - ISFSI: GAMMA mrem/91 day Type Qtr1 Qtr2 Qtr3 Qtr4 I-01 NE corner of ISFS Gamma 36.4 +/- 1.8 35.5 +/- 3.1 43.2 +/- 3.1 40.9 +/- 3.5 I-02 North side of ISFSI, center Gamma 33.4 +/- 2.5 31.7 +/- 1.6 38.1 +/- 2.3 36.4 +/- 2.1 I-03 NW corner of ISFSI Gamma 26.4 +/- 2.5 25.3 +/- 1.9 32.7 +/- 2.9 33.2 +/- 1.9 I-04 West side of ISFSI, middle Gamma 66.0 +/- 5.9 64.6 +/- 5.0 75.0 +/- 3.1 74.0 +/- 3.6 I-05 West side of ISFSI, at center of array Gamma 53.3 +/- 4.2 48.1 +/- 3.1 52.7 +/- 3.5 52.1 +/- 3.2 I-06 SW corner of ISFSI Gamma 25.9 +/- 1.8 27.2 +/- 1.6 32.1 +/- 1.8 29.1 +/- 2.5 I-07 South side of ISFSI, center Gamma 28.9 +/- 2.0 28.9 +/- 1.6 33.0 +/- 2.8 30.3 +/- 1.7 I-08 SE corner of ISFSI Gamma 30.1 +/- 4.1 28.0 +/- 2.9 31.7 +/- 3.0 30.7 +/- 4.1 I-09 East side of ISFSI, at center of array Gamma 65.3 +/- 6.1 58.9 +/- 7.0 70.9 +/- 3.5 69.0 +/- 4.4 I-10 East side of ISFSI, middle Gamma 54.9 +/- 3.2 55.4 +/- 6.8 61.4 +/- 4.4 56.3 +/- 3.1
APPENDIX A GEL Laboratories, LLC 2023 Annual Quality Assurance Report ARCADIS I Design&Consultancy for natural and built assets
2023 ANNUAL QUALITY ASSURANCE REPORT FOR THE RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP)
© 3 !I Laboratories LLc a member of The GEL Group INC problem solved e
2040 Savage Road I Charleston. SC 29407 843.556.8171 gel.com
2023 ANNUAL QUALITY ASSURANCE REPORT FOR THE RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP)
Approved By February 28, 2024 Angela A. Johnson Date Director, Quality Systems problem solved
TABLE OF CONTENTS
- 1.
INTRODUCTION 5
- 2.
QUALITY ASSURANCE PROGRAMS FOR INTER-LABORATORY, INTRA-LABORATORY AND THIRD PARTY CROSS-CHECK 5
- 3.
QUALITY ASSURANCE PROGRAM FOR INTERNAL AND EXTERNAL AUDITS 7
- 4.
PERFORMANCE EVALUATION ACCEPTANCE CRITERIA FOR ENVIRONMENTAL SAMPLE ANALYSIS 7
- 5.
PERFORMANCE EVALUATION SAMPLES 7
- 6.
QUALITY CONTROL PROGRAM FOR ENVIRONMENTAL SAMPLE ANALYSIS 8
- 7.
SUMMARY
OF DATA RESULTS 9
- 8.
SUMMARY
OF PARTICIPATION IN THE ECKERT & ZIEGLER ANALYTICS ENVIRONMENTAL CROSS-CHECK PROGRAM 9
- 9.
SUMMARY
OF PARTICIPATION IN THE MAPEP MONITORING PROGRAM 9
- 10.
SUMMARY
OF PARTICIPATION IN THE ERA MRAD PT PROGRAM 9
- 11.
SUMMARY
OF PARTICIPATION IN THE ERA PT PROGRAM 9
- 12.
CORRECTIVE ACTION REQUEST AND REPORT (CARR) 9
- 13. REFERENCES 11 TABLES TABLE 1 12 problem solved
TABLE OF CONTENTS (CONTINUED)
FIGURES Figure 1 Cobalt-60 Performance Evaluation Results and % Bias........................................... 31 Figure 2 Cesium-137 Performance Evaluation Results and % Bias....................................... 32 Figure 3 Tritium Performance Evaluation Results and % Bias................................................ 33 Figure 4 Strontium-90 Performance Evaluation Results and % Bias....................................... 34 Figure 5 Gross Alpha Performance Evaluation Results and % Bias........................................ 35 Figure 6 Gross Beta Performance Evaluation Results and % Bias......................................... 36 Figure 7 Iodine-131 Performance Evaluation Results and % Bias.......................................... 37 Figure 8 Americium-241 Performance Evaluation Results and % Bias................................... 38 Figure 9 Plutonium-238 Performance Evaluation Results and % Bias.................................... 38 problem solved
2023 ANNUAL QUALITY ASSURANCE REPORT FOR THE RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP)
- 1.
Introduction GEL Laboratories, LLC (GEL) is a privately owned environmental laboratory dedicated to providing personalized client services of the highest quality. GEL was established as an analytical testing laboratory in 1981. Now a full service lab, our analytical divisions use state of the art equipment and methods to provide a comprehensive array of organic, inorganic, and radiochemical analyses to meet the needs of our clients.
At GEL, quality is emphasized at every level of personnel throughout the company.
Managements ongoing commitment to good professional practice and to the quality of our testing services to our customers is demonstrated by their dedication of personnel and resources to develop, implement, assess, and improve our technical and management operations.
The purpose of GELs quality assurance program is to establish policies, procedures, and processes to meet or exceed the expectations of our clients. To achieve this, all personnel that support these services to our clients are introduced to the program and policies during their initial orientation, and annually thereafter during company-wide training sessions.
GELs primary goals are to ensure that all measurement data generated are scientifically and legally defensible, of known and acceptable quality per the data quality objectives (DQOs), and thoroughly documented to provide sound support for environmental decisions. In addition, GEL continues to ensure compliance with all contractual requirements, environmental standards, and regulations established by local, state and federal authorities.
GEL administers the QA program in accordance with the Quality Assurance Plan, GL-QS-B-001. Our Quality Systems include all quality assurance (QA) policies and quality control (QC) procedures necessary to plan, implement, and assess the work we perform. GELs QA Program establishes a quality management system (QMS) that governs all of the activities of our organization.
This report entails the quality assurance program for the proficiency testing and environmental monitoring aspects of GEL for 2023. GELs QA Program is designed to monitor the quality of analytical processing associated with environmental, radiobioassay, effluent (10 CFR Part 50), and waste (10 CFR Part 61) sample analysis.
This report covers the category of Radiological Environmental Monitoring Program (REMP) and includes:
x Intra-laboratory QC results analyzed during 2023.
x Inter-laboratory QC results analyzed during 2023 where known values are available.
- 2.
Quality Assurance Programs for Inter-laboratory, Intra-laboratory and Third Party Cross-Check In addition to internal and client audits, our laboratory participates in annual performance evaluation studies conducted by independent providers. We routinely participate in the following types of performance audits:
x Proficiency testing and other inter-laboratory comparisons x
Performance requirements necessary to retain certifications problem solved
x Evaluation of recoveries of certified reference and in-house secondary reference materials using statistical process control data.
x Evaluation of relative percent difference between measurements through SPC data.
We also participate in a number of proficiency testing programs for federal and state agencies and as required by contracts. It is our policy that no proficiency evaluation samples be analyzed in any special manner. Our annual performance evaluation participation generally includes a combination of studies that support the following:
x US Environmental Protection Agency Discharge Monitoring Report, Quality Assurance Program (DMR-QA). Annual national program sponsored by EPA for laboratories engaged in the analysis of samples associated with the NPDES monitoring program.
Participation is mandatory for all holders of NPDES permits. The permit holder must analyze for all of the parameters listed on the discharge permit. Parameters include general chemistry, metals, BOD/COD, oil and grease, ammonia, nitrates, etc.
x Department of Energy Mixed Analyte Performance Evaluation Program (MAPEP). A semiannual program developed by DOE in support of DOE contractors performing waste analyses. Participation is required for all laboratories that perform environmental analytical measurements in support of environmental management activities. This program includes radioactive isotopes in water, soil, vegetation and air filters.
x ERAs MRAD-Multimedia Radiochemistry Proficiency test program. This program is for labs seeking certification for radionuclides in wastewater and solid waste. The program is conducted in strict compliance with USEPA National Standards for Water Proficiency study.
x ERAs InterLaB RadCheM Proficiency Testing Program for radiological analyses. This program completes the process of replacing the USEPA EMSL-LV Nuclear Radiation Assessment Division program discontinued in 1998. Laboratories seeking certification for radionuclide analysis in drinking water also use the study. This program is conducted in strict compliance with the USEPA National Standards for Water Proficiency Testing Studies. This program encompasses Uranium by EPA method 200.8 (for drinking water certification in Utah/Primary NELAP), gamma emitters, Gross Alpha/Beta, Iodine-131, naturally occurring radioactive isotopes, Strontium-89/90, and Tritium.
x ERAs Water Pollution (WP) biannual program for waste methodologies includes parameters for both organic and inorganic analytes.
x ERAs Water Supply (WS) biannual program for drinking water methodologies includes parameters for organic and inorganic analytes.
x Environmental Cross-Check Program administered by Eckert & Ziegler Analytics, Inc.
This program encompasses radionuclides in water, soil, milk, naturally occurring radioactive isotopes in soil and air filters.
GEL procures single-blind performance evaluation samples from Eckert & Ziegler Analytics to verify the analysis of sample matrices processed at GEL. Samples are received on a quarterly basis. GELs Third-Party Cross-Check Program provides environmental matrices encountered in a typical nuclear utility REMP. The Third-Party Cross-Check Program is intended to meet or exceed the inter-laboratory comparison program requirements discussed in NRC Regulatory Guide 4.15. Once performance evaluation samples have been prepared in accordance with the instructions provided by the PT provider, samples are managed and analyzed in the same manner as environmental samples from GELs clients.
problem solved
- 3.
Quality Assurance Program for Internal and External Audits During each annual reporting period, at least one internal assessment of each area of the laboratory is conducted in accordance with the pre-established schedule from Standard Operating Procedure for the Conduct of Quality Audits, GL-QS-E-001. The annual internal audit plan is reviewed for adequacy and includes the scheduled frequency and scope of quality control actions necessary to GELs QA program. Internal audits are conducted at least annually in accordance with a schedule approved by the Quality Systems Director.
Supplier audits are contingent upon the categorization of the supplies and may or may not be conducted prior to the use of a supplier or subcontractor. Type I suppliers and subcontractors, regardless of how they were initially qualified, are re-evaluated at least once every three years.
In addition, prospective customers audit GEL during pre-contract audits. GEL hosts several external audits each year for both our clients and other programs. These programs include environmental monitoring, waste characterization, and radiobioassay. The following list of programs may audit GEL at least annually or up to every three years depending on the program.
x TNI, The NELAC Institute, National Environmental Laboratory Accreditation Program x
DOECAP, U.S. Department of Energy Consolidated Audit Program x
DOELAP, U.S. Department of Energy Laboratory Accreditation Program x
DOE QSAS, U.S. Department of Energy, Quality Systems for Analytical Services x
ISO/IEC 17025:2017 x
A2LA, American Association for Laboratory Accreditation x
DoD ELAP, US Department of Defense Environmental Accreditation Program x
NUPIC, Nuclear Procurement Issues Committee x
South Carolina Department of Health and Environmental Control (SC DHEC)
The annual radiochemistry laboratory internal audit (23-RAD-001) was conducted in August of 2023. There were no findings, two observations and one recommendation for improvement from this assessment.
- 4.
Performance Evaluation Acceptance Criteria for Environmental Sample Analysis GEL utilized an acceptance protocol based upon two performance models. For those inter-laboratory programs that already have established performance criteria for bias (i.e.,
MAPEP, and ERA/ELAP), GEL will utilize the criteria for the specific program. For intra-laboratory or third party quality control programs that do not have a specific acceptance criteria (i.e. the Eckert-Ziegler Analytics Environmental Cross-check Program), results will be evaluated in accordance with GELs internal acceptance criteria.
- 5.
Performance Evaluation Samples Performance Evaluation (PE) results and internal quality control sample results are evaluated in accordance with GEL acceptance criteria. The first criterion concerns bias, which is defined as the deviation of any one result from the known value. The second criterion concerns precision, which deals with the ability of the measurement to be replicated by comparison of an individual result with the mean of all results for a given sample set.
At GEL, we also evaluate our analytical performance on a regular basis through statistical process control (SPC) acceptance criteria. Where feasible, this criterion is applied to both measures of precision and accuracy and is specific to sample matrix. We establish environmental process control limits at least annually.
For Radiochemistry analysis, quality control evaluation is based on static limits rather than those that are statistically derived. Our current process control limits are maintained in problem solved
GELs AlphaLIMS. We also measure precision with matrix duplicates and/or matrix spike duplicates. The upper and lower control limits (UCL and LCL respectively) for precision are plus or minus three times the standard deviation from the mean of a series of relative percent differences. The static precision criteria for radiochemical analyses are 0 - 20%,
for activity levels exceeding the contract required detection limit (CRDL).
- 6.
Quality Control Program for Environmental Sample Analysis GELs internal QA Program is designed to include QC functions such as instrumentation calibration checks (to insure proper instrument response), blank samples, instrumentation backgrounds, duplicates, as well as overall staff qualification analyses and statistical process controls. Both quality control and qualification analyses samples are used to be as similar as the matrix type of those samples submitted for analysis by the various laboratory clients. These performance test samples (or performance evaluation samples) are either actual sample submitted in duplicate in order to evaluate the precision of laboratory measurements, or fortified blank samples, which have been given a known quantity of a radioisotope that is in the interest to GELs clients.
Accuracy (or Bias) is measured through laboratory control samples and/or matrix spikes, as well as surrogates and internal standards. The UCLs and LCLs for accuracy are plus or minus three times the standard deviation from the mean of a series of recoveries. The static limit for most radiochemical analyses is 75 - 125%. Specific instructions for out-of-control situations are provided in the applicable analytical SOP.
GELs Laboratory Control Standard (LCS) is an aliquot of reagent water or other blank matrix to which known quantities of the method analytes are added in the laboratory. The LCS is analyzed exactly like a sample, and its purpose is to determine whether the methodology is in control, and whether the laboratory is capable of making accurate and precise measurements. Some methods may refer to these samples as Laboratory Fortified Blanks (LFB). The requirement for recovery is between 75% and 125% for radiological analyses excluding drinking water matrix.
Bias (%) = (observed concentration)
- 100 %
(known concentration)
Precision is a data quality indicator of the agreement between measurements of the same property, obtained under similar conditions, and how well they conform to themselves.
Precision is usually expressed as standard deviation, variance or range in either absolute or relative (percentage) terms.
GELs laboratory duplicate (DUP or LCSD) is an aliquot of a sample taken from the same container and processed in the same manner under identical laboratory conditions. The aliquot is analyzed independently from the parent sample and the results are compared to measure precision and accuracy.
If a sample duplicate is analyzed, it will be reported as Relative Percent Difference (RPD).
The RPD must be 20 percent or less, if both samples are greater than 5 times the MDC. If both results are less than 5 times MDC, then the RPD must be equal to or less than 100%.
If one result is above the MDC and the other is below the MDC, then the RPD can be calculated using the MDC for the result of the one below the MDC. The RPD must be 100%
or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC, the RPD must be less than or equal to 20%. If both results are below MDC, then the limits on % RPD are not applicable.
Difference (%) = (high duplicate result - low duplicate result)
- 100 %
(average of results) problem solved
- 7.
Summary of Data Results During 2023, forty-one (41) radioisotopes associated with six (6) matrix types were analyzed under GELs Performance Evaluation program in participation with ERA, MAPEP, and Eckert & Ziegler Analytics. Matrix types were representative of client analyses performed during 2023. Of the three hundred eight (308) total results, 96.8% (298 of 308) were found to be acceptable within the PT providers three sigma or other statistical criteria.
The list below contains the type of matrix evaluated by GEL.
x Air Filter x
Cartridge x
Water x
Milk x
Soil x
Vegetation Graphs are provided in Figures 1-9 of this report to allow for the evaluation of trends or biases. These graphs include radioisotopes Cobalt-60, Cesium-137, Tritium, Strontium-90, Gross Alpha, Gross Beta, Iodine-131, Americium-241, and Plutonium-238.
- 8.
Summary of Participation in the Eckert & Ziegler Analytics Environmental Cross-Check Program Eckert & Ziegler Analytics provided samples for ninety-two (92) individual environmental analyses. The accuracy of each result reported to Eckert & Ziegler Analytics, Inc. is measured by the ratio of GELs result to the known value. Of the 92 analyses reported, 98.9% (91 out of 92) fell within the acceptance criteria.
- 9.
Summary of Participation in the MAPEP Monitoring Program MAPEP Series 48 was analyzed by the laboratory. Of the sixty-eight (68) analyses reported, 97.1% (66 out of 68) fell within the PT providers acceptance criteria.
- 10.
Summary of Participation in the ERA MRaD PT Program The ERA MRad program provided samples (MRAD-38 and MRAD-39) for one hundred forty-eight (148) individual environmental analyses reported. Of the 148 analyses reported, 98.6% (146 of the 148) fell within the PT providers acceptance criteria.
- 11.
Summary of Participation in the ERA PT Program The ERA program provided samples (RAD-132, RAD-133 and RAD-134) for forty-six (46) individual environmental analyses. Of the 46 analyses, 86.9% fell within the PT providers acceptance criteria.
All corrective actions for unacceptable PTs are summarized in Table 8.
- 12.
Corrective Action Request and Report (CARR)
There are two categories of corrective action at GEL. One is corrective action implemented at the analytical and data review level in accordance with the analytical SOP. The other is formal corrective action documented by the Quality Systems Team in accordance with GL-QS-E-002. A formal corrective action is initiated when a nonconformance reoccurs or is so significant that permanent elimination or prevention of the problem is required. Formal corrective action investigations include root cause analysis.
problem solved
GEL includes quality requirements in most analytical standard operating procedures to ensure that data are reported only if the quality control criteria are met or the quality control measures that did not meet the acceptance criteria are documented. A formal corrective action is implemented according to GL-QS-E-002 for Conducting Corrective/Preventive Action and Identifying Opportunities for Improvement. Recording and documentation is performed following guidelines stated in GL-QS-E-012 for Client NCR Database Operation.
Any employee at GEL can identify and report a nonconformance and request that corrective action be taken. Any GEL employee can participate on a corrective action team as requested by the QS team or Group Leaders. The steps for conducting corrective action are detailed in GL-QS-E-002. In the event that correctness or validity of the laboratorys test results in doubt, the laboratory will take corrective action. If investigations show that the results have been impacted, affected clients will be informed of the issue in writing within five (5) calendar days of the discovery.
Table 8 provides the status of CARRs for radiological performance testing during 2023. It has been determined that causes of the unacceptable results did not impact any data reported to our clients.
problem solved
- 13.
References
- 1.
GEL Quality Assurance Plan, GL-QS-B-001
- 2.
GEL Standard Operating Procedure for the Conduct of Quality Audits, GL-QS-E-001
- 3.
GEL Standard Operating Procedure for Conducting Corrective/Preventive Action and Identifying Opportunities for Improvement, GL-QS-E-002
- 4.
GEL Standard Operating Procedure for LIMS Documentation of Nonconformance Reporting and Dispositioning and Control of Nonconforming Items, GL-QS-E-004
- 5.
GEL Standard Operating Procedure for Handling Proficiency Evaluation Samples, GL-QS-E-013
- 6.
GEL Standard Operating Procedure for Quality Assurance Measurement Calculations and Processes, GL-QS-E-014
- 7.
40 CFR Part 136 Guidelines Establishing Test Procedures for the Analysis of Pollutants
- 8.
ISO/IEC 17025-2017, General Requirements for the Competence of Testing and Calibration Laboratories
- 9.
ANSI/ASQC E4-1994, Specifications and Guidelines for Quality Systems for Environmental Data Collection and Environmental Technology Programs, American National Standard
- 10.
2016 TNI Standard, The NELAC Institute, National Environmental Accreditation Program
- 11.
MARLAP, Multi-Agency Radiological Laboratory Analytical Protocols
- 12.
10 CFR Part 21, Reporting of Defects and Noncompliance
- 13.
10 CFR Part 50 Appendix B, Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants
- 14.
10 CFR Part 61, Licensing Requirements for Land Disposal and Radioactive Waste
- 15.
NRC REG Guide 4.15 and NRC REG Guide 4.8 problem solved
TABLE 1 2023 RADIOLOGICAL PROFICIENCY TESTING RESULTS AND ACCEPTANCE CRITERIA PT Provid er Quarter
/ Year Report Closing
/
Receive d Date Sample Number Sample Media Units Analyte Reporte d Value Assigne d Value Acceptance Limits Performance Evaluation ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Barium-133 32.8 30.5 24.2 - 34.6 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Barium-133 32.8 30.5 24.2 - 34.6 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Cesium-134 28.3 28.2 21.9 - 31.1 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Cesium-137 202 190 171 - 211 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Cobalt-60 120 110 99.0 - 123 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Gross Alpha 27.7 30 15.3 - 39.2 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Gross Alpha 26.4 30 15.3 - 39.2 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Gross Alpha 26.4 30 15.3 - 39.2 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Gross Beta 13.6 16.5 9.25 - 24.8 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Gross Beta 13.6 16.5 9.25 - 24.8 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Iodine-131 28.3 27 22.4 - 31.8 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Radium-228 5.97 7.17 4.51 - 9.20 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Radium-228 5.4 7.17 4.51 - 9.20 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Strontium-89 59.8 53.5 42.5 - 61.1 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Strontium-89 57.4 53.5 42.5 - 61.1 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Strontium-90 26.2 28.8 20.9 - 33.5 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Strontium-90 26.9 28.8 20.9 - 33.5 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Tritium 20600 21600 18900 -
23800 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water g/L Uranium (mass) 11.18 10.7 8.18 - 12.5 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Uranium (Nat) 6.41 7.36 5.64 - 8.60 Acceptable ERA 1st/202 3
02/27/23 RAD 132 Water pCi/L Zinc-65 126 105 94.5 - 125 Not Acceptable EZA 1st/202 3
05/18/23 E13851 Cartridge pCi Iodine-131 9.39E+0 1
8.98E+0 1
1.05 Acceptable EZA 1st/202 3
05/18/23 E13852 Milk pCi/L Strontium-89 6.91E+0 1
9.31E+0 1
0.74 Acceptable EZA 1st/202 3
05/18/23 E13852 Milk pCi/L Strontium-90 1.07E+0 1
1.47E+0 1
0.73 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Cerium-141 1.44E+0 2
1.39E+0 2
1.04 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Cobalt-58 1.43E+0 2
1.31E+0 2
1.10 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Cobalt-60 2.90E+0 2
2.79E+0 2
1.04 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Chromium-51 3.49E+0 2
3.02E+0 2
1.16 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Cesium-134 1.85E+0 2
2.00E+0 2
0.93 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Cesium-137 1.44E+0 2
1.40E+0 2
1.03 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Iron-59 1.51E+0 2
1.22E+0 2
1.24 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Iodine-131 8.93E+0 1
8.20E+0 1
1.09 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Manganese-54 1.98E+0 2
1.80E+0 2
1.10 Acceptable EZA 1st/202 3
05/18/23 E13853 Milk pCi/L Zinc-65 3.40E+0 2
3.06E+0 2
1.11 Acceptable EZA 1st/202 3
05/18/23 E13854 Water pCi/L Cerium-141 1.60E+0 2
1.36E+0 2
1.17 Acceptable problem solved
EZA 1st/202 3
05/18/23 E13854 Water pCi/L Cobalt-58 1.37E+0 2
1.28E+0 2
1.07 Acceptable EZA 1st/202 3
05/18/23 E13854 Water pCi/L Cobalt-60 2.97E+0 2
2.74E+0 2
1.08 Acceptable EZA 1st/202 3
05/18/23 E13854 Water pCi/L Chromium-51 3.44E+0 2
2.96E+0 2
1.16 Acceptable EZA 1st/202 3
05/18/23 E13854 Water pCi/L Cesium-134 1.87E+0 2
1.96E+0 2
0.95 Acceptable EZA 1st/202 3
05/18/23 E13854 Water pCi/L Cesium-137 1.37E+0 2
1.38E+0 2
0.99 Acceptable EZA 1st/202 3
05/18/23 E13854 Water pCi/L Iron-59 1.29E+0 2
1.19E+0 2
1.08 Acceptable EZA 1st/202 3
05/18/23 E13854 Water pCi/L Iodine-131 1.01E+0 2
8.78E+0 1
1.15 Acceptable EZA 1st/202 3
05/18/23 E13854 Water pCi/L Manganese-54 1.89E+0 2
1.76E+0 2
1.07 Acceptable EZA 1st/202 3
05/18/23 E13854 Water pCi/L Zinc-65 3.45E+0 2
3.00E+0 2
1.15 Acceptable EZA 2nd/202 3
08/21/23 E13893 Cartridge pCi Iodine-131 7.00E+0 1
6.66E+0 1
1.05 Acceptable EZA 2nd/202 3
08/21/23 E13890 Milk pCi/L Strontium-89 6.34E+0 1
8.68E+0 1
0.73 Acceptable EZA 2nd/202 3
08/21/23 E13890 Milk pCi/L Strontium-90 6.21E+0 0
1.27E+0 1
0.49 Not Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Cerium-141 1.22E+0 2
1.20E+0 2
1.02 Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Cobalt-58 1.49E+0 2
1.38E+0 2
1.08 Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Cobalt-60 3.90E+0 2
3.66E+0 2
1.06 Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Chromium-51 3.49E+0 2
2.92E+0 2
1.19 Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Cesium-134 1.68E+0 2
1.83E+0 2
0.92 Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Cesium-137 2.42E+0 2
2.30E+0 2
1.05 Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Iron-59 1.97E+0 2
1.72E+0 2
1.15 Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Iodine-131 8.18E+0 1
7.44E+0 1
1.10 Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Manganese-54 1.84E+0 2
1.62E+0 2
1.13 Acceptable EZA 2nd/202 3
08/21/23 E13891 Milk pCi/L Zinc-65 2.72E+0 2
2.48E+0 2
1.10 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Cerium-141 9.53E+0 1
8.25E+0 1
1.16 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Cobalt-58 9.63E+0 1
9.47E+0 1
1.02 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Cobalt-60 2.59E+0 2
2.52E+0 2
1.03 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Chromium-51 2.07E+0 2
2.01E+0 2
1.03 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Cesium-134 1.17E+0 2
1.26E+0 2
0.93 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Cesium-137 1.57E+0 2
1.58E+0 2
0.99 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Iron-59 1.37E+0 2
1.18E+0 2
1.16 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Iodine-131 4.95E+0 1
5.57E+0 1
0.89 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Manganese-54 1.22E+0 2
1.12E+0 2
1.09 Acceptable EZA 2nd/202 3
08/21/23 E13892 Water pCi/L Zinc-65 1.95E+0 2
1.70E+0 2
1.14 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Americium-241 54.8 55.6 39.7 - 74.1 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Cesium-134 140 153 99.3 - 188 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Cesium-137 856 892 733 - 1170 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Cobalt-60 488 467 397 - 593 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Gross Alpha 82.3 76.8 40.1 - 127 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Gross Beta 35.2 32.8 19.9 - 49.6 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Iron-55 430 578 211 - 922 Acceptable problem solved
ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Manganese-54
<4.23
<35.0
<35.0 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Plutonium-238 9.28 9.59 7.24 - 11.8 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Plutonium-239 63.9 68.9 51.5 - 83.1 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Strontium-90 148 137 86.7 - 187 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter g/Filte r
Uranium (mass) 148 158 127 - 185 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Uranium-234 45 53.1 39.4 - 62.2 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Uranium-238 49.3 52.6 39.7 - 62.8 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Uranium-Total 96.55 108 78.8 - 128 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Filter pCi/Filt er Zinc-65 1160 1110 910 - 1700 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Actinium-228 1590 1670 1100 - 2100 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Americium-241 1380 1410 761 - 2000 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Bismuth-212 1750 1670 478 - 2490 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Bismuth-214 686 790 379 - 1180 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Cesium-134 1000 1170 800 - 1400 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Cesium-137 3430 3570 2700 - 4520 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Cobalt-60 3240 3490 2750 - 4310 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Lead-212 1770 1630 1140 - 2060 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Lead-214 901 838 352 - 1320 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Manganese-54
<25.0
<555
<555 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Plutonium-238 942 1040 519 - 1580 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Plutonium-239 1600 2000 1090 - 2880 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Potassium-40 43300 41800 28800 -
49900 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Strontium-90 2400 2580 803 - 4020 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Thorium-234 4280 4260 1610 - 7300 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil g/kg Uranium (mass) 13000 12800 5780 -
17300 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Uranium-234 3810 4300 2020 - 5630 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Uranium-234 4180 4300 2020 - 5630 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Uranium-238 4580 4260 2340 - 5720 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Uranium-238 4330 4260 2340 - 5720 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Uranium-Total 8710 8760 4860 -
11300 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Soil pCi/kg Zinc-65 8990 8340 6660 -
11400 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Americium-241 2470 2760 1710 - 3900 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Cesium-134 1450 1730 1150 - 2300 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Cesium-137 1760 1840 1410 - 2480 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Cobalt-60 701 696 546 - 910 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Curium-244 2240 2930 1650 - 3640 Acceptable problem solved
ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Manganese-54
<27.1
<207
<207 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Plutonium-238 135 129 89.3 - 166 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Plutonium-239 1950 1990 1380 - 2520 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Potassium-40 34800 33300 25000 -
42200 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Strontium-90 4090 4550 2570 - 5930 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Strontium-90 4090 4550 2570-5930 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on g/kg Uranium (mass) 2310 2160 1660 - 2680 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Uranium-234 746 726 510 - 926 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Uranium-238 767 720 508 - 901 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Uranium-Total 1570 1480 945 - 2000 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Vegetati on pCi/kg Zinc-65 1360 1220 910 - 1810 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Americium-241 33.5 32.1 22.0 - 41.0 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Cesium-134 291 298 225 - 328 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Cesium-137 784 762 652 - 866 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Cobalt-60 432 412 355 - 473 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Gross Alpha 138 148 54.0 - 204 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Gross Beta 178 170 85.0 - 234 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Iron-55 1320 1380 811 - 2010 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Manganese-54
<2.69
<71.0
<71.0 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Plutonium-238 64.9 70.7 42.5 - 91.6 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Plutonium-239 80.3 92.4 57.2 - 114 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Strontium-90 143 121 87.1 - 150 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Tritium 24500 28000 21100 -
34100 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water g/L Uranium (mass) 173 160 130 - 181 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Uranium-234 42.3 53.9 41.0 - 61.6 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Uranium-238 57.6 53.4 41.4 - 62.9 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Uranium-Total 119 110 85.8 - 125 Acceptable ERA 2nd20 23 5/19/20 23 MRAD-38 Water pCi/L Zinc-65 268 228 203 - 288 Acceptable ERA 2nd20 23 5/21/20 23 040623G Water pCi/L Tritium 16200 18100 15800-19900 Acceptable ERA 2nd20 23 5/21/20 23 040623G Water pCi/L Zinc-65 330 302 272 - 353 Acceptable ERA 2nd20 23 5/25/20 23 RAD-133 Water pCi/L Iodine-131 26.8 28.7 23.9 - 33.6 Acceptable ERA 2nd20 23 5/25/20 23 RAD-133 Water pCi/L Radium-226 6.13 7.68 5.78 - 9.07 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Americium-241 0.0000 01 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Cesium-134 1.48 1.52 1.06-1.98 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Cesium-137 0.676 0.63 0.441-0.819 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Cobalt-57 0.682 0.661 0.463-0.859 Acceptable problem solved
MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Cobalt-60 1.12 1.05 0.74-1.37 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP GrF48 Filter Bq/sm pl Gross Alpha 0.642 0.97 0.29-1.65 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP GrF48 Filter Bq/sm pl Gross Beta 1.45 1.49 0.75-2.24 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Manganese-54 2.15 2.14 1.50-2.78 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Plutonium-238 0.106 0.111 0.078-0.144 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Plutonium-239/240 0.106 0.109 0.076-0.142 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Strontium-90 0.0159 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Uranium-234/233 0.117 0.11 0.077-0.143 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter ug/smp l
Uranium-235 0.0702 0.0644 0.0451-0.0837 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter ug/smp l
Uranium-238 10.3 9.1 6.4-11.8 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Uranium-238 0.116 0.114 0.080-0.148 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter ug/smp l
Uranium-Total 10.37 9.2 6.4-12.0 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdF48 Filter Bq/sm pl Zinc-65 2.42 2.25 1.58-2.93 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Americium-241 4.14 0.9 Sens Eval Not Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Cesium-134 2.67 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Cesium-137 1.07 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Cobalt-57 802 698 489-907 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Cobalt-60 808 795 557-1034 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Iron-55
-53.2 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Manganese-54 1340 1230 861-1599 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Nickel-63 1030 1130 791-1469 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Plutonium-238 1.02 0.52 Sens Eval Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Plutonium-239/240 100 101 71-131 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Potassium-40 594 574 402-746 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Strontium-90 953 920 644-1196 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Technetium-99 1050 1100 770-1430 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Thorium 228 46.8 43.3 30.3-56.3 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Thorium 230 45.5 40 28.0-52.0 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Thorium 232 45 43.3 30.3-56.3 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg U-234/233 60.4 64 45-83 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Uranium-238 264 258 181-335 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaS48 Soil Bq/Kg Zinc-65 1120 990 693-1287 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Americium-241 0.187 0.189 0.132-0.246 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Cesium-134 7.15 7.6 5.32-9.88 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Cesium-137 0.0488 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Cobalt-57 7.35 6.93 4.85-9.01 Acceptable problem solved
MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Cobalt-60 6.81 6.51 4.56-8.46 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Manganese-54 8.77 8.03 5.62-10.44 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Plutonium-238 0.175 0.187 0.131-0.243 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Plutonium-239/240 0.163 0.178 0.125-0.231 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Strontium-90 0.0049 1
False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Uranium-234/233 0.0005 0.0004 4
Sen Eval Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Uranium-238 0.0005 0.0002 56 Sen Eval Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP RdV48 veg Bq/sm pl Zinc-65 8.28 7.43 5.20-9.66 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Americium-241 0.39 0.387 0.271-0.503 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Cesium-134 9.19 9.6 6.7-12.5 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Cesium-137 9.55 8.7 6.1-11.3 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Cobalt-57
-0.0175 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Cobalt-60 7.61 7.24 5.07-9.41 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP GrW48 Water Bq/L Gross Alpha 1.07 1.19 0.36-2.02 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP GrW48 Water Bq/L Gross Beta 5.9 5.94 2.97-8.91 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Hydrogen-3 502 573 401-745 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Iron-55
-4.08 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Manganese-54 12.1 11.3 7.9-14.7 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Nickel-63 24.8 27.3 19.1-35.5 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Plutonium-238 0.756 0.846 0.592-1.10 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Plutonium-239/240 0.0268 0.0174 Sen Eval Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Potassium-40 0.137 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Radium-226 0.531 0.759 0.531-0.987 Not Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Strontium-90 0.022 False pos.
test Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Technetium-99 8.66 9.31 6.52-12.10 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Uranium-234/233 1.23 1.15 0.81-1.50 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Uranium-238 1.27 1.16 0.81-1.51 Acceptable MAPE P
2nd20 23 6/21/20 23 MAPEP MaW48 Water Bq/L Zinc-65 18 15.3 10.7-19.9 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Barium-133 75.7 66.5 55.4-73.2 Not Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Cesium-134 88 90.8 74.5-99.9 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Cesium-137 161 163 147-181 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Cobalt-60 18.6 20.7 17.5-25.6 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Gross Alpha 55.3 47.9 24.9-60.3 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Gross Alpha 59.9 47.9 24.9-60.3 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Gross Beta 24.2 28.6 18.2-36.4 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Iodine-131 25.3 24.4 20.2-28.9 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Iodine-131 29.1 24.4 20.2-28.9 Not Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Radium-226 17.4 17.4 12.9-19.9 Acceptable problem solved
ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Radium-228 7.23 7.16 4.50-9.18 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Radium-228 7.61 7.16 4.50-9.18 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Strontium-89 61.8 51.2 40.4-58.7 Not Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Strontium-89 59.6 51.2 40.4-58.7 Not Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Strontium-90 51.4 45 33.2-51.6 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Strontium-90 58.2 45 33.2-51.6 Not Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Tritium 9040 9860 8570-10800 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Tritium 10200 9860 8570-10800 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water g/L Uranium (mass) 34.85 35.3 28.4-39.3 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Uranium (Nat) 23.2 24.2 19.5-27.0 Acceptable ERA 3rd/202 3
08/26/23 RAD-134 Water pCi/L Zinc-65 319 290 261-339 Acceptable EZA 3rd/202 3
11/22/23 E13897 Cartridge pCi Iodine-131 7.86E+0 1
7.86E+0 1
1.00 Acceptable EZA 3rd/202 3
11/22/23 E13894 Milk pCi/L Strontium-89 6.26E+0 1
7.14E+0 1
0.88 Acceptable EZA 3rd/202 3
11/22/23 E13894 Milk pCi/L Strontium-90 8.92E+0 0
1.28E+0 1
0.70 Not Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Cerium-141 1.17E+0 2
1.04E+0 2
1.13 Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Cobalt-58 6.93E+0 1
6.58E+0 1
1.05 Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Cobalt-60 2.33E+0 2
2.23E+0 2
1.05 Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Chromium-51 2.83E+0 2
2.05E+0 2
1.16 Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Cesium-134 1.06E+0 2
1.14E+0 2
0.93 Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Cesium-137 1.43E+0 2
1.41E+0 2
1.01 Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Iron-59 9.00E+0 1
7.88E+0 1
1.14 Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Iodine-131 4.21E+0 1
3.74E+0 1
1.13 Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Manganese-54 1.61E+0 2
1.46E+0 2
1.10 Acceptable EZA 3rd/202 3
11/22/23 E13895 Milk pCi/L Zinc-65 2.19E+0 2
2.03E+0 2
1.08 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Cerium-141 1.34E+0 2
1.16E+0 2
1.15 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Cobalt-58 7.99E+0 1
7.36E+0 1
1.09 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Cobalt-60 2.62E+0 2
2.49E+0 2
1.05 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Chromium-51 2.51E+0 2
2.29E+0 2
1.10 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Cesium-134 1.27E+0 2
1.28E+0 2
0.99 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Cesium-137 1.67E+0 2
1.58E+0 2
1.06 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Iron-59 1.02E+0 2
8.81E+0 1
1.16 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Iodine-131 5.79E+0 1
5.29E+0 1
1.10 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Manganese-54 1.79E+0 2
1.64E+0 2
1.09 Acceptable EZA 3rd/202 3
11/22/23 E13896 Water pCi/L Zinc-65 2.59E+0 2
2.27E+0 2
1.14 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Americium-241 74.3 69.3 49.5 - 92.4 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Cesium-134 1260 1350 876 - 1660 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Cesium-137 962 932 765 - 1220 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Cobalt-60 99.9 95.5 81.2 - 121 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Gross Alpha 99.8 79.8 41.7-131 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Gross Beta 59.5 42.6 25.8-64.4 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
<2.97
<35.0
<35.0 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Plutonium-238 44.9 49.3 37.2 - 60.6 Acceptable problem solved
ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Plutonium-239 44.5 47.2 35.3 - 56.9 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Strontium-90 170 162 102 - 221 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter g/Filter Uranium (mass) 53.1 59.9 48.1 - 70.2 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter g/Filter Uranium (mass) 58.9 59.9 48.1 - 70.2 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Uranium-234 18.5 20.1 14.9 - 23.6 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Uranium-234 17.3 20.1 14.9 - 23.6 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Uranium-238 17.7 20 15.1 - 23.9 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Uranium-238 19.6 20 15.1 - 23.9 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Uranium-Total 37 41 29.9 - 48.6 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Uranium-Total 38.1 41 29.9 - 48.6 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Filter pCi/Filte r
Zinc-65 181 161 132 - 246 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Actinium-228 1520 1590 1050 - 2000 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Americium-241 934 1300 702 - 1840 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Bismuth-212 1760 1670 478 - 2490 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Bismuth-214 538 786 377 - 1170 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Cesium-134 1070 1570 1070 - 1880 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Cesium-137 1290 1780 1350 - 2250 Not Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Cobalt-60 5760 7960 6270 - 9830 Not Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Lead-212 1560 1650 1150 - 2090 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Lead-214 653 851 357 - 1340 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Manganese-54
<24.2
<555
<555 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Plutonium-238 380 481 240 - 731 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Plutonium-239 831 1250 681 - 1800 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Potassium-40 42500 41800 28800 -
49900 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Strontium-90 5190 6800 2120 - 10600 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Thorium-234 2950 3140 1190 - 5380 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil g/kg Uranium (mass) 7420 9400 4240 - 12700 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil g/kg Uranium (mass) 7270 9400 4240 - 12700 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Uranium-234 2320 3160 1480 - 4140 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Uranium-234 2400 3160 1480 - 4140 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Uranium-238 2480 3140 1720 - 4210 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Uranium-238 2420 3140 1720 - 4210 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Uranium-Total 4915 6440 3570 - 8330 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Uranium-Total 4960 6440 3570 - 8330 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Soil pCi/kg Zinc-65 1670 2030 1620 - 2770 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Americium-241 3990 4580 2830 - 6470 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Cesium-134 370 455 302 - 606 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Cesium-137 905 949 730 - 1280 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Cobalt-60 2260 2250 1770 - 2940 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Manganese-54
<29.5
<207
<207 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Plutonium-238 1700 1940 1340 - 2500 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Plutonium-239 3730 4210 2910 - 5330 Acceptable problem solved
ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Potassium-40 36500 33300 25000 -
42200 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Strontium-90 1030 904 510 - 1180 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
g/kg Uranium (mass) 10800 11000 8440 - 13600 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Uranium-234 3570 3710 2610 - 4730 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Uranium-238 3590 3680 2600 - 4600 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Uranium-Total 7380 7550 4820 - 10200 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Vegetatio n
pCi/kg Zinc-65 1240 952 710 - 1410 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Americium-241 77.5 71 48.7 - 90.8 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Cesium-134 983 1010 763 - 1110 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Cesium-137 1030 1010 865 - 1150 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Cobalt-60 2200 2020 1740 - 2320 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Gross Alpha 63.3 71.6 26.1-98.7 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Gross Beta 57 51.1 25.6-70.3 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Manganese-54
<7.43
<71.0
<71.0 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Plutonium-238 152 177 106 - 229 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Plutonium-239 150 182 113 - 224 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Strontium-90 1020 878 632 - 1090 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Tritium 7820 8630 6500-10500 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water g/L Uranium (mass) 269 295 239 - 335 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water g/L Uranium (mass) 294 295 239 - 335 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Uranium-234 105 98.9 75.3 - 113 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Uranium-234 93.9 98.9 75.3 - 113 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Uranium-238 90 98.1 76.0 - 115 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Uranium-238 98 98.1 76.0 - 115 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Uranium-Total 199.12 202 158 - 230 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Uranium-Total 198 202 158 - 230 Acceptable ERA 4th/202 3
11/20/23 MRAD-39 Water pCi/L Zinc-65 2230 1990 1770 - 2510 Acceptable EZA 4th/202 3
2/15/24 E13901 Cartridge pCi Iodine-131 7.98E+0 1
8.00E+0 1
1 Acceptable EZA 4th/202 3
2/15/24 E13898 Milk pCi/L Strontium-89 6.42E+0 1
8.59E+0 1
0.75 Acceptable EZA 4th/202 3
2/15/24 E13898 Milk pCi/L Strontium-90 7.60E+0 0
1.19E+0 1
0.64 Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Cerium-141 8.29E+0 1
8.87E+0 1
0.93 Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Cobalt-58 ND not spiked NA Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Cobalt-60 9.74E+0 1
9.29E+0 1
1.05 Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Chromium-51 1.49E+0 2
1.52E+0 2
0.98 Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Cesium-134 1.24E+0 2
1.43E+0 2
0.87 Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Cesium-137 1.22E+0 2
1.21E+0 2
1.01 Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Iron-59 1.16E+0 2
1.08E+0 2
1.08 Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Iodine-131 4.40E+0 1
4.00E+0 1
1.10 Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Manganese-54 9.98E+0 1
9.83E+0 1
1.02 Acceptable EZA 4th/202 3
2/15/24 E13899 Milk pCi/L Zinc-65 1.34E+0 2
1.24E+0 2
1.05 Acceptable EZA 4th/202 3
2/15/24 E13900 Water pCi/L Cerium-141 9.56E+0 1
8.88E+0 1
1.08 Acceptable EZA 4th/202 3
2/15/24 E13900 Water pCi/L Cobalt-58 ND not spiked NA Acceptable problem solved
EZA 4th/202 3
2/15/24 E13900 Water pCi/L Cobalt-60 9.60E+0 1
9.30E+0 1
1.03 Acceptable EZA 4th/202 3
2/15/24 E13900 Water pCi/L Chromium-51 1.46E+0 2
1.53E+0 2
0.96 Acceptable EZA 4th/202 3
2/15/24 E13900 Water pCi/L Cesium-134 1.25E+0 2
1.43E+0 2
0.87 Acceptable EZA 4th/202 3
2/15/24 E13900 Water pCi/L Cesium-137 1.25E+0 2
1.21E+0 2
1.03 Acceptable EZA 4th/202 3
2/15/24 E13900 Water pCi/L Iron-59 1.26E+0 2
1.08E+0 2
1.17 Acceptable EZA 4th/202 3
2/15/24 E13900 Water pCi/L Iodine-131 3.92E+0 1
4.01E+0 1
0.98 Acceptable EZA 4th/202 3
2/15/24 E13900 Water pCi/L Manganese-54 1.01E+0 2
9.84E+0 1
1.03 Acceptable EZA 4th/202 3
2/15/24 E13900 Water pCi/L Zinc-65 1.43E+0 2
1.27E+0 2
1.12 Acceptable problem solved
TABLE 2 2023 ECKERT & ZIEGLER ANALYTICS PERFORMANCE EVALUATION RESULTS PT Provider Quarter /
Year Report Closing /
Received Date Sample Number Sample Media Units Analyte Reported Value Assigned Value Acceptance Limits Performance Evaluation EZA 1st/2023 05/18/23 E13893 Cartridge pCi Iodine-131 9.39E+01 8.98E+01 1.05 Acceptable EZA 1st/2023 05/18/23 E13890 Milk pCi/L Strontium-89 6.91E+01 9.31E+01 0.74 Acceptable EZA 1st/2023 05/18/23 E13890 Milk pCi/L Strontium-90 1.07E+01 1.47E+01 0.73 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Cerium-141 1.44E+02 1.39E+02 1.04 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Cobalt-58 1.43E+02 1.31E+02 1.10 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Cobalt-60 2.90E+02 2.79E+02 1.04 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Chromium-51 3.49E+02 3.02E+02 1.16 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Cesium-134 1.85E+02 2.00E+02 0.93 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Cesium-137 1.44E+02 1.40E+02 1.03 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Iron-59 1.51E+02 1.22E+02 1.24 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Iodine-131 8.93E+01 8.20E+01 1.09 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Manganese-54 1.98E+02 1.80E+02 1.10 Acceptable EZA 1st/2023 05/18/23 E13891 Milk pCi/L Zinc-65 3.40E+02 3.06E+02 1.11 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Cerium-141 1.60E+02 1.36E+02 1.17 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Cobalt-58 1.37E+02 1.28E+02 1.07 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Cobalt-60 2.97E+02 2.74E+02 1.08 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Chromium-51 3.44E+02 2.96E+02 1.16 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Cesium-134 1.87E+02 1.96E+02 0.95 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Cesium-137 1.37E+02 1.38E+02 0.99 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Iron-59 1.29E+02 1.19E+02 1.08 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Iodine-131 1.01E+02 8.78E+01 1.15 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Manganese-54 1.89E+02 1.76E+02 1.07 Acceptable EZA 1st/2023 05/18/23 E13892 Water pCi/L Zinc-65 3.45E+02 3.00E+02 1.15 Acceptable EZA 2nd/2023 08/21/23 E13893 Cartridge pCi Iodine-131 7.00E+01 6.66E+01 1.05 Acceptable EZA 2nd/2023 08/21/23 E13890 Milk pCi/L Strontium-89 6.34E+01 8.68E+01 0.73 Acceptable EZA 2nd/2023 08/21/23 E13890 Milk pCi/L Strontium-90 6.21E+00 1.27E+01 0.49 Not Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Cerium-141 1.22E+02 1.20E+02 1.02 Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Cobalt-58 1.49E+02 1.38E+02 1.08 Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Cobalt-60 3.90E+02 3.66E+02 1.06 Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Chromium-51 3.49E+02 2.92E+02 1.19 Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Cesium-134 1.68E+02 1.83E+02 0.92 Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Cesium-137 2.42E+02 2.30E+02 1.05 Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Iron-59 1.97E+02 1.72E+02 1.15 Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Iodine-131 8.18E+01 7.44E+01 1.10 Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Manganese-54 1.84E+02 1.62E+02 1.13 Acceptable EZA 2nd/2023 08/21/23 E13891 Milk pCi/L Zinc-65 2.72E+02 2.48E+02 1.10 Acceptable EZA 2nd/2023 08/21/23 E13892 Water pCi/L Cerium-141 9.53E+01 8.25E+01 1.16 Acceptable EZA 2nd/2023 08/21/23 E13892 Water pCi/L Cobalt-58 9.63E+01 9.47E+01 1.02 Acceptable EZA 2nd/2023 08/21/23 E13892 Water pCi/L Cobalt-60 2.59E+02 2.52E+02 1.03 Acceptable EZA 2nd/2023 08/21/23 E13892 Water pCi/L Chromium-51 2.07E+02 2.01E+02 1.03 Acceptable EZA 2nd/2023 08/21/23 E13892 Water pCi/L Cesium-134 1.17E+02 1.26E+02 0.93 Acceptable EZA 2nd/2023 08/21/23 E13892 Water pCi/L Cesium-137 1.57E+02 1.58E+02 0.99 Acceptable EZA 2nd/2023 08/21/23 E13892 Water pCi/L Iron-59 1.37E+02 1.18E+02 1.16 Acceptable EZA 2nd/2023 08/21/23 E13892 Water pCi/L Iodine-131 4.95E+01 5.57E+01 0.89 Acceptable problem solved
EZA 2nd/2023 08/21/23 E13892 Water pCi/L Manganese-54 1.22E+02 1.12E+02 1.09 Acceptable EZA 2nd/2023 08/21/23 E13892 Water pCi/L Zinc-65 1.95E+02 1.70E+02 1.14 Acceptable EZA 3rd/2023 11/22/23 E13897 Cartridge pCi Iodine-131 7.86E+01 7.86E+01 1.00 Acceptable EZA 3rd/2023 11/22/23 E13894 Milk pCi/L Strontium-89 6.26E+01 7.14E+01 0.88 Acceptable EZA 3rd/2023 11/22/23 E13894 Milk pCi/L Strontium-90 8.92E+00 1.28E+01 0.70 Not Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Cerium-141 1.17E+02 1.04E+02 1.13 Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Cobalt-58 6.93E+01 6.58E+01 1.05 Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Cobalt-60 2.33E+02 2.23E+02 1.05 Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Chromium-51 2.83E+02 2.05E+02 1.16 Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Cesium-134 1.06E+02 1.14E+02 0.93 Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Cesium-137 1.43E+02 1.41E+02 1.01 Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Iron-59 9.00E+01 7.88E+01 1.14 Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Iodine-131 4.21E+01 3.74E+01 1.13 Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Manganese-54 1.61E+02 1.46E+02 1.10 Acceptable EZA 3rd/2023 11/22/23 E13895 Milk pCi/L Zinc-65 2.19E+02 2.03E+02 1.08 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Cerium-141 1.34E+02 1.16E+02 1.15 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Cobalt-58 7.99E+01 7.36E+01 1.09 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Cobalt-60 2.62E+02 2.49E+02 1.05 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Chromium-51 2.51E+02 2.29E+02 1.10 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Cesium-134 1.27E+02 1.28E+02 0.99 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Cesium-137 1.67E+02 1.58E+02 1.06 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Iron-59 1.02E+02 8.81E+01 1.16 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Iodine-131 5.79E+01 5.29E+01 1.10 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Manganese-54 1.79E+02 1.64E+02 1.09 Acceptable EZA 3rd/2023 11/22/23 E13896 Water pCi/L Zinc-65 2.59E+02 2.27E+02 1.14 Acceptable EZA 4th/2023 2/15/24 E13901 Cartridge pCi Iodine-131 7.98E+01 8.00E+01 1
Acceptable EZA 4th/2023 2/15/24 E13898 Milk pCi/L Strontium-89 6.42E+01 8.59E+01 0.75 Acceptable EZA 4th/2023 2/15/24 E13898 Milk pCi/L Strontium-90 7.60E+00 1.19E+01 0.64 Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Cerium-141 8.29E+01 8.87E+01 0.93 Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Cobalt-58 ND not spiked NA Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Cobalt-60 9.74E+01 9.29E+01 1.05 Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Chromium-51 1.49E+02 1.52E+02 0.98 Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Cesium-134 1.24E+02 1.43E+02 0.87 Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Cesium-137 1.22E+02 1.21E+02 1.01 Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Iron-59 1.16E+02 1.08E+02 1.08 Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Iodine-131 4.40E+01 4.00E+01 1.10 Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Manganese-54 9.98E+01 9.83E+01 1.02 Acceptable EZA 4th/2023 2/15/24 E13899 Milk pCi/L Zinc-65 1.34E+02 1.24E+02 1.05 Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Cerium-141 9.56E+01 8.88E+01 1.08 Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Cobalt-58 ND not spiked NA Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Cobalt-60 9.60E+01 9.30E+01 1.03 Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Chromium-51 1.46E+02 1.53E+02 0.96 Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Cesium-134 1.25E+02 1.43E+02 0.87 Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Cesium-137 1.25E+02 1.21E+02 1.03 Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Iron-59 1.26E+02 1.08E+02 1.17 Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Iodine-131 3.92E+01 4.01E+01 0.98 Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Manganese-54 1.01E+02 9.84E+01 1.03 Acceptable EZA 4th/2023 2/15/24 E13900 Water pCi/L Zinc-65 1.43E+02 1.27E+02 1.12 Acceptable problem solved
TABLE 3 2023 DEPARTMENT OF ENERGY MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP) RESULTS PT Provider Quarter
/ Year Report Sample Number Sample Media Unit Analyte / Nuclide GEL Known value Acceptance Range/ Ratio Evaluation Received Date Value MAPEP 2nd2023 6/21/2023 MAPEP-23-GrF48 Filter Bq/smpl Gross Alpha 0.642 0.97 0.29-1.65 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-GrF48 Filter Bq/smpl Gross Beta 1.45 1.49 0.75-2.24 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-GrW48 Water Bq/L Gross Alpha 1.07 1.19 0.36-2.02 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-GrW48 Water Bq/L Gross Beta 5.9 5.94 2.97-8.91 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Americium-241 4.14 0.9 Sens Eval Not Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Cesium-134 2.67 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Cesium-137 1.07 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Cobalt-57 802 698 489-907 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Cobalt-60 808 795 557-1034 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Iron-55
-53.2 False pos.test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Manganese-54 1340 1230 861-1599 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Nickel-63 1030 1130 791-1469 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Plutonium-238 1.02 0.52 Sens Eval Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Plutonium-239/240 100 101 71-131 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Potassium-40 594 574 402-746 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Strontium-90 953 920 644-1196 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Technetium-99 1050 1100 770-1430 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Thorium 228 46.8 43.3 30.3-56.3 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Thorium 230 45.5 40 28.0-52.0 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Thorium 232 45 43.3 30.3-56.3 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg U-234/233 60.4 64 45-83 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Uranium-238 264 258 181-335 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaS48 Soil Bq/Kg Zinc-65 1120 990 693-1287 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Americium-241 0.39 0.387 0.271-0.503 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Cesium-134 9.19 9.6 6.7-12.5 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Cesium-137 9.55 8.7 6.1-11.3 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Cobalt-57
-0.0175 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Cobalt-60 7.61 7.24 5.07-9.41 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Hydrogen-3 502 573 401-745 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Iron-55
-4.08 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Manganese-54 12.1 11.3 7.9-14.7 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Nickel-63 24.8 27.3 19.1-35.5 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Plutonium-238 0.756 0.846 0.592-1.10 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Plutonium-239/240 0.0268 0.0174 Sen Eval Acceptable problem solved
MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Potassium-40 0.137 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Radium-226 0.531 0.759 0.531-0.987 Not Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Strontium-90 0.022 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Technetium-99 8.66 9.31 6.52-12.10 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Uranium-234/233 1.23 1.15 0.81-1.50 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Uranium-238 1.27 1.16 0.81-1.51 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-MaW48 Water Bq/L Zinc-65 18.0 15.3 10.7-19.9 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter ug/smpl Uranium-235 0.0702 0.0644 0.0451-0.0837 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter ug/smpl Uranium-238 10.3 9.1 6.4-11.8 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter ug/smpl Uranium-Total 10.37 9.2 6.4-12.0 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Americium-241 1E-06 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Cesium-134 1.48 1.52 1.06-1.98 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Cesium-137 0.676 0.63 0.441-0.819 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Cobalt-57 0.682 0.661 0.463-0.859 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Cobalt-60 1.12 1.05 0.74-1.37 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Manganese-54 2.15 2.14 1.50-2.78 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Plutonium-238 0.106 0.111 0.078-0.144 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Plutonium-239/240 0.106 0.109 0.076-0.142 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Strontium-90 0.0159 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Uranium-234/233 0.117 0.11 0.077-0.143 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Uranium-238 0.116 0.114 0.080-0.148 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdF48 Filter Bq/smpl Zinc-65 2.42 2.25 1.58-2.93 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Americium-241 0.187 0.189 0.132-0.246 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Cesium-134 7.15 7.6 5.32-9.88 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Cesium-137 0.0488 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Cobalt-57 7.35 6.93 4.85-9.01 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Cobalt-60 6.81 6.51 4.56-8.46 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Manganese-54 8.77 8.03 5.62-10.44 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Plutonium-238 0.175 0.187 0.131-0.243 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Plutonium-239/240 0.163 0.178 0.125-0.231 Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Strontium-90 0.00491 False pos. test Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Uranium-234/233 0.0005 0.00044 Sen Eval Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Uranium-238 0.0005 0.00026 Sen Eval Acceptable MAPEP 2nd2023 6/21/2023 MAPEP-23-RdV48 veg Bq/smpl Zinc-65 8.28 7.43 5.20-9.66 Acceptable problem solved
TABLE 4 2023 ERA PROGRAM PERFORMANCE EVALUATION RESULTS PT Provider Quarter
/ Year Report Closing /
Received Date Sample Number Sample Media Units Analyte Reported Value Assigned Value Acceptance Limits Performance Evaluation ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Barium-133 32.8 30.5 24.2 - 34.6 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Barium-133 32.8 30.5 24.2 - 34.6 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Cesium-134 28.3 28.2 21.9 - 31.1 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Cesium-137 202 190 171 - 211 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Cobalt-60 120 110 99.0 - 123 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Zinc-65 126 105 94.5 - 125 Not Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Gross Alpha 27.7 30 15.3 - 39.2 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Gross Alpha 26.4 30 15.3 - 39.2 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Gross Alpha 26.4 30 15.3 - 39.2 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Gross Beta 13.6 16.5 9.25 - 24.8 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Gross Beta 13.6 16.5 9.25 - 24.8 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Radium-228 5.97 7.17 4.51 - 9.20 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Radium-228 5.4 7.17 4.51 - 9.20 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Uranium (Nat) 6.41 7.36 5.64 - 8.60 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water g/L Uranium (mass) 11.18 10.7 8.18 - 12.5 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Tritium 20600 21600 18900 -
23800 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Strontium-89 59.8 53.5 42.5 - 61.1 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Strontium-89 57.4 53.5 42.5 - 61.1 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Strontium-90 26.2 28.8 20.9 - 33.5 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Strontium-90 26.9 28.8 20.9 - 33.5 Acceptable ERA 1st/2023 02/27/23 RAD 132 Water pCi/L Iodine-131 28.3 27 22.4 - 31.8 Acceptable ERA 2nd2023 5/21/2023 040623G Water pCi/L Zinc-65 330 302 272 - 353 Acceptable ERA 2nd2023 5/21/2023 040623G Water pCi/L Tritium 16200 18100 15800-19900 Acceptable ERA 2nd2023 5/25/2023 RAD-133 Water pCi/L Radium-226 6.13 7.68 5.78 - 9.07 Acceptable ERA 2nd2023 5/25/2023 RAD-133 Water pCi/L Iodine-131 26.8 28.7 23.9 - 33.6 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Barium-133 75.7 66.5 55.4-73.2 Not Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Cesium-134 88 90.8 74.5-99.9 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Cesium-137 161 163 147-181 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Cobalt-60 18.6 20.7 17.5-25.6 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Zinc-65 319 290 261-339 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Gross Alpha 55.3 47.9 24.9-60.3 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Gross Alpha 59.9 47.9 24.9-60.3 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Gross Beta 24.2 28.6 18.2-36.4 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Radium-226 17.4 17.4 12.9-19.9 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Radium-228 7.23 7.16 4.50-9.18 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Radium-228 7.61 7.16 4.50-9.18 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Uranium (Nat) 23.2 24.2 19.5-27.0 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water g/L Uranium (mass) 34.85 35.3 28.4-39.3 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Tritium 9040 9860 8570-10800 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Tritium 10200 9860 8570-10800 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Strontium-89 61.8 51.2 40.4-58.7 Not Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Strontium-89 59.6 51.2 40.4-58.7 Not Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Strontium-90 51.4 45 33.2-51.6 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Strontium-90 58.2 45 33.2-51.6 Not Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Iodine-131 25.3 24.4 20.2-28.9 Acceptable ERA 3rd/2023 08/26/23 RAD-134 Water pCi/L Iodine-131 29.1 24.4 20.2-28.9 Not Acceptable problem solved
TABLE 5 2023 ERA PROGRAM (MRAD) PERFORMANCE EVALUATION RESULTS PT Provider Quarter
/ Year Report Sample Number Sample Media Unit Analyte /
Nuclide GEL Known value Acceptance Range/ Ratio Evaluation Received Date Value ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Actinium-228 1590 1670 1100 - 2100 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Americium-241 1380 1410 761 - 2000 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Bismuth-212 1750 1670 478 - 2490 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Bismuth-214 686 790 379 - 1180 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Cesium-134 1000 1170 800 - 1400 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Cesium-137 3430 3570 2700 - 4520 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Cobalt-60 3240 3490 2750 - 4310 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Lead-212 1770 1630 1140 - 2060 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Lead-214 901 838 352 - 1320 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Manganese-54
<25.0
<555
<555 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Plutonium-238 942 1040 519 - 1580 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Plutonium-239 1600 2000 1090 - 2880 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Potassium-40 43300 41800 28800 - 49900 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Strontium-90 2400 2580 803 - 4020 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Thorium-234 4280 4260 1610 - 7300 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Uranium-234 3810 4300 2020 - 5630 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Uranium-234 4180 4300 2020 - 5630 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Uranium-238 4580 4260 2340 - 5720 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Uranium-238 4330 4260 2340 - 5720 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Uranium-Total 8710 8760 4860 - 11300 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil g/kg Uranium (mass) 13000 12800 5780 - 17300 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Soil pCi/kg Zinc-65 8990 8340 6660 - 11400 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Americium-241 54.8 55.6 39.7 - 74.1 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Cesium-134 140 153 99.3 - 188 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Cesium-137 856 892 733 - 1170 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Cobalt-60 488 467 397 - 593 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Iron-55 430 578 211 - 922 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Manganese-54
<4.23
<35.0
<35.0 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Plutonium-238 9.28 9.59 7.24 - 11.8 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Plutonium-239 63.9 68.9 51.5 - 83.1 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Strontium-90 148 137 86.7 - 187 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Uranium-234 45 53.1 39.4 - 62.2 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Uranium-238 49.3 52.6 39.7 - 62.8 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Uranium-Total 96.55 108 78.8 - 128 Acceptable problem solved
ERA 2nd2023 5/19/2023 MRAD-38 Filter g/Filter Uranium (mass) 148 158 127 - 185 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Zinc-65 1160 1110 910 - 1700 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Gross Alpha 82.3 76.8 40.1 - 127 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Filter pCi/Filter Gross Beta 35.2 32.8 19.9 - 49.6 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Tritium 24500 28000 21100 - 34100 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Americium-241 33.5 32.1 22.0 - 41.0 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Cesium-134 291 298 225 - 328 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Cesium-137 784 762 652 - 866 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Cobalt-60 432 412 355 - 473 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Iron-55 1320 1380 811 - 2010 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Manganese-54
<2.69
<71.0
<71.0 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Plutonium-238 64.9 70.7 42.5 - 91.6 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Plutonium-239 80.3 92.4 57.2 - 114 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Strontium-90 143 121 87.1 - 150 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Uranium-234 42.3 53.9 41.0 - 61.6 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Uranium-238 57.6 53.4 41.4 - 62.9 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Uranium-Total 119 110 85.8 - 125 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water g/L Uranium (mass) 173 160 130 - 181 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Zinc-65 268 228 203 - 288 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Gross Alpha 138 148 54.0 - 204 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Water pCi/L Gross Beta 178 170 85.0 - 234 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Americium-241 2470 2760 1710 - 3900 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Cesium-134 1450 1730 1150 - 2300 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Cesium-137 1760 1840 1410 - 2480 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Cobalt-60 701 696 546 - 910 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Curium-244 2240 2930 1650 - 3640 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Manganese-54
<27.1
<207
<207 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Plutonium-238 135 129 89.3 - 166 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Plutonium-239 1950 1990 1380 - 2520 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Potassium-40 34800 33300 25000 - 42200 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Strontium-90 4090 4550 2570 - 5930 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Uranium-234 746 726 510 - 926 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Uranium-238 767 720 508 - 901 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Uranium-Total 1570 1480 945 - 2000 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation g/kg Uranium (mass) 2310 2160 1660 - 2680 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Zinc-65 1360 1220 910 - 1810 Acceptable ERA 2nd2023 5/19/2023 MRAD-38 Vegetation pCi/kg Strontium-90 4090 4550 2570-5930 Acceptable problem solved
ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Actinium-228 1520 1590 1050 - 2000 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Americium-241 934 1300 702 - 1840 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Bismuth-212 1760 1670 478 - 2490 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Bismuth-214 538 786 377 - 1170 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Cesium-134 1070 1570 1070 - 1880 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Cesium-137 1290 1780 1350 - 2250 Not Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Cobalt-60 5760 7960 6270 - 9830 Not Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Lead-212 1560 1650 1150 - 2090 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Lead-214 653 851 357 - 1340 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Manganese-54
<24.2
<555
<555 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Plutonium-238 380 481 240 - 731 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Plutonium-239 831 1250 681 - 1800 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Potassium-40 42500 41800 28800 -
49900 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Strontium-90 5190 6800 2120 - 10600 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Thorium-234 2950 3140 1190 - 5380 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Uranium-234 2320 3160 1480 - 4140 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Uranium-234 2400 3160 1480 - 4140 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Uranium-238 2480 3140 1720 - 4210 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Uranium-238 2420 3140 1720 - 4210 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Uranium-Total 4915 6440 3570 - 8330 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Uranium-Total 4960 6440 3570 - 8330 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil g/kg Uranium (mass) 7420 9400 4240 - 12700 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil g/kg Uranium (mass) 7270 9400 4240 - 12700 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Soil pCi/kg Zinc-65 1670 2030 1620 - 2770 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Americium-241 3990 4580 2830 - 6470 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Cesium-134 370 455 302 - 606 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Cesium-137 905 949 730 - 1280 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Cobalt-60 2260 2250 1770 - 2940 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Manganese-54
<29.5
<207
<207 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Plutonium-238 1700 1940 1340 - 2500 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Plutonium-239 3730 4210 2910 - 5330 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Potassium-40 36500 33300 25000 -
42200 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Strontium-90 1030 904 510 - 1180 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Uranium-234 3570 3710 2610 - 4730 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Uranium-238 3590 3680 2600 - 4600 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Uranium-Total 7380 7550 4820 - 10200 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation g/kg Uranium (mass) 10800 11000 8440 - 13600 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Vegetation pCi/kg Zinc-65 1240 952 710 - 1410 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Americium-241 74.3 69.3 49.5 - 92.4 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Cesium-134 1260 1350 876 - 1660 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Cesium-137 962 932 765 - 1220 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Cobalt-60 99.9 95.5 81.2 - 121 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Manganese-54
<2.97
<35.0
<35.0 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Plutonium-238 44.9 49.3 37.2 - 60.6 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Plutonium-239 44.5 47.2 35.3 - 56.9 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Strontium-90 170 162 102 - 221 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Uranium-234 18.5 20.1 14.9 - 23.6 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Uranium-234 17.3 20.1 14.9 - 23.6 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Uranium-238 17.7 20 15.1 - 23.9 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Uranium-238 19.6 20 15.1 - 23.9 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Uranium-Total 37 41 29.9 - 48.6 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Uranium-Total 38.1 41 29.9 - 48.6 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter g/Filter Uranium (mass) 53.1 59.9 48.1 - 70.2 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter g/Filter Uranium (mass) 58.9 59.9 48.1 - 70.2 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Zinc-65 181 161 132 - 246 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Gross Alpha 99.8 79.8 41.7-131 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Filter pCi/Filter Gross Beta 59.5 42.6 25.8-64.4 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Americium-241 77.5 71 48.7 - 90.8 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Cesium-134 983 1010 763 - 1110 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Cesium-137 1030 1010 865 - 1150 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Cobalt-60 2200 2020 1740 - 2320 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Manganese-54
<7.43
<71.0
<71.0 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Plutonium-238 152 177 106 - 229 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Plutonium-239 150 182 113 - 224 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Strontium-90 1020 878 632 - 1090 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Uranium-234 105 98.9 75.3 - 113 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Uranium-234 93.9 98.9 75.3 - 113 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Uranium-238 90 98.1 76.0 - 115 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Uranium-238 98 98.1 76.0 - 115 Acceptable problem solved
ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Uranium-Total 199.12 202 158 - 230 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Uranium-Total 198 202 158 - 230 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water g/L Uranium (mass) 269 295 239 - 335 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water g/L Uranium (mass) 294 295 239 - 335 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Zinc-65 2230 1990 1770 - 2510 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Gross Alpha 63.3 71.6 26.1-98.7 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Gross Beta 57 51.1 25.6-70.3 Acceptable ERA 4th/2023 11/20/23 MRAD-39 Water pCi/L Tritium 7820 8630 6500-10500 Acceptable problem solved
FIGURE 1 COBALT-60 PERFORMANCE EVALUATION RESULTS AND % BIAS 2023 Cobalt-GO Performance Evaluation Results and % Bias 100.0 75.0 50.0 25.0
Series 1
!/)
~
.. -~;-
Series2 ca ii5 0.0
~
Series3 0
-25.0
-50.0
-75.0
-100.0 January 2023-December2023 problem solved
FIGURE 2 CESIUM-137 PERFORMANCE EVALUATION RESULTS AND % BIAS 2023 Cesium-137 Performance Evaluation Results and% Bias 100.0 75.0 50.0 25.0
-+-Series1
"' ~I
< 0.45
--0 a.
0.4 I'-
0.35
(")
I en 0.3
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O> 0.25 en 0.2
~
<( 0.15 ro
- J 0.1 C:
C 0.05
<(
0 m I'-
O>
O>
O>
CX>
O>
- 0 0
O>
O>
0 O>
O>
0 0
N N
River Sediment Annual Average Cs-137
.......,_M-8 (Control) --+- M-9
--+-M-15 CX>
O>
0 0
0 0
0 0
N N
N Years
...-N('f')'<tll)<O
'II"""
~
~ ~ ~ ~ ~ ~
Figure 4.8-1: Graph of Historical Cesium-137 in River Sediment arcadis.com 28