ULNRC-06812, Annual Radiological Environmental Operating Report
| ML23117A294 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 04/27/2023 |
| From: | Ameren Missouri, Environmentalists, Union Electric Co |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML23117A292 | List: |
| References | |
| ULNRC-06812 | |
| Download: ML23117A294 (1) | |
Text
PREFACE
This Annual Radiological Environmental Operating Report (AREOR) describes the Ameren Missouri Callaway Energy Center Radiological Environmental Monitoring Program (REMP), and the program results for the calendar year 2022. It is submitted in accordance with section 5.6.2 of the Callaway Energy Center Technical Specifications.
Staff members of the Environmental, Inc., Midwest Laboratory were responsible for the acquisition of data presented in this report. Environmental samples were collected by Ameren Missouri personnel or contractors to Ameren Missouri and shipped to Environmental, Inc. - Midwest Laboratory and Stanford Dosimetry, LLC, for analysis.
The report was prepared by Environmental, Inc., Midwest Laboratory and the Ameren Missouri Callaway Energy Center.
ii TABLE OF CONTENTS
No. Page
PREFACE..................................................................................................................... ii
List of Tables................................................................................................................. v
List of Figures............................................................................................................... vi
1.0 INTRODUCTION
........................................................................................................... 1
2.0
SUMMARY
.................................................................................................................... 2
3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM............................... 3
3.1 Program Design and Data Interpretation......................................................... 3 3.2 Program Description........................................................................................ 4 3.3 Program Execution.......................................................................................... 5 3.4 Laboratory Procedures.................................................................................... 6 3.5 Program Modifications..................................................................................... 7 3.6 Detection and Reporting Limits........................................................................ 7 3.7 Land Use Census............................................................................................. 7 3.8 Errata from previous AREORs........................................................................ 7
4.0 RESULTS AND DISCUSSION..................................................................................... 8
4.1 Atmospheric Nuclear Detonations and Nuclear Accidents.............................. 8 4.2 Program Findings............................................................................................. 8
5.0 TABLES..................................................................................................................... 11
6.0 REFERENCES
CITED................................................................................................ 25
APPENDICES
A Interlaboratory Comparison Program Results......................................................... A-1
B Data Reporting Conventions.................................................................................... B-1
C Non-Radiological Monitoring Program..................................................................... C-1
D Sampling Location Maps.......................................................................................... D-1
iii TABLE OF CONTENTS (continued)
PART II Page
Data Tabulations and Analyses..................................................................................... i
iv LIST OF TABLES
No. Page
5.1 Sampling Locations, Ameren Missouri, Callaway Energy Center.............................. 12
5.2 Collection Frequencies and Required Analyses......................................................... 16
5.3 Minimum Required Detection Capabilities for REMP Sample Analysis..................... 17
5.4 Results of the Land Use Census................................................................................ 18
5.5 Missed Collections and Analyses............................................................................... 19
5.6 Radiological Environmental Monitoring Program Summary....................................... 20
5.7 Direct Radiation Dose (mrem/90 days) for the Period 2000-2020.............................. 22
In addition, the following tables are in the Appendices:
Appendix A
Attachment A: Acceptance criteria for spiked samples............................................ A-2 A-1 Interlaboratory Comparison Crosscheck Program, Environmental Resource Associates RAD study (substitute program for EPA)............................................... A-3 A-3 In-house Spiked Samples........................................................................................ A-6 A-4 In-house "Blank" Samples....................................................................................... A-8 A-5 In-house "Duplicate" Samples................................................................................. A-11 A-6 Department of Energy MAPEP comparison results................................................. A-15 A-7 Interlaboratory Comparison Crosscheck Program, Environmental Resource Associates MRAD study (substitute program for EML)........................................... A-17
v LIST OF FIGURES
Appendix D
No. Page
D-1 Radiological Environmental Sampling Locations 1, 2, 3 mile radius from site location................................ D-2
D-2 Radiological Environmental Sampling Locations 3, 4, 5, 6 mile radius from site location............................................................................................................... D-3
D-3 Radiological Environmental Sampling Locations 5, 10, 15 mile radius from site location...................................................................................................................... D-4
D-4 Non-Potable Groundwater Monitoring Wells, 600 ft radius....................................... D-5
D-5 Non-Potable Groundwater Monitoring Wells Collection............................................ D-6
vi
1.0 INTRODUCTION
This report presents an analysis of the results of the Radiological Environmental Monitoring Program (REMP) conducted during 2022 for the Union Electric Company (dba Ameren Missouri) Callaway Energy Center.
The objectives of the REMP are to monitor potential critical pathways of radioactive effluent to man and determine the radiological impact on the environment caused by operation of the Callaway Energy Center. The Radiological Environmental Monitoring Program was initiated in April 1982.
The Callaway Energy Center consists of one 3565 MWt pressurized water reactor, which achieved initial criticality on October 2, 1984. The plant is located on a plateau approximately ten miles southeast of the City of Fulton in Callaway County, Missouri and approximately eighty miles west of the St. Louis metropolitan area. The Missouri River flows by the site in an easterly direction approximately five miles south of the site at its closest point.
Tabulation of the individual analyses for the year 2022 is included in Part II of this report.
1 2.0
SUMMARY
The Radiological Environmental Monitoring Program, as required by the U.S. Nuclear Regulatory Commission (NRC) Technical Specifications for the Callaway Energy Center is described herein.
Results for the year 2022 are summarized and discussed.
For the year, the Callaway Energy Center was operated in compliance with Offsite Dose Calculation Manual (ODCM) and Radiological Effluent Controls (REC) requirements. Results from the REMP indicate the Callaway Energy Center has had no significant radiological impact on the health and safety of the public or on the environment.
2 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
3.1 Program Design and Data Interpretation
The purpose of the Radiological Environmental Monitoring Program at the Callaway Energy Center is to assess the impact of the plant on its environment. For this purpose, samples are collected from waterborne, airborne, ingestion and terrestrial pathways and analyzed for radioactive content.
Direct radiation levels are monitored by thermoluminescent dosimeters (TLDs).
Sources of environmental radiation can include the following:
(1) Natural background radiation arising from cosmic rays and primordial radionuclides; (2) Fallout from atmospheric nuclear detonations; (3) Releases from nuclear power plants, planned or accidental; and (4) Industrial and medical radioactive waste.
Effects due to operation of the Callaway Energy Center must be distinguished from those due to other sources in interpreting the data.
The indicator-control concept is a major interpretive aid; where feasible the design of the Callaway Energy Center program has both indicator and control stations. Most types of samples are collected at indicator locations (nearby, downwind, or downstream) and at control locations (distant, upwind, or upstream). A station effect would be indicated if the radiation level at an indicator location was significantly larger than that at the control location. The difference would have to be greater than could be accounted for by typical fluctuations in radiation levels arising from other sources.
The monitoring program includes analyses for iodine-131, a fission product, and tritium, which is produced by cosmic rays, atmospheric nuclear detonations, and also by nuclear power plants.
Most samples are analyzed for gamma-emitting isotopes, with results for the following groups quantified: zirconium-95, cesium-137, and cerium-144. These three gamma-emitting isotopes are selected as radiological impact indicators because of the different characteristic proportions in which they appear in the fission product mix produced by a nuclear reactor and that produced by a nuclear detonation. Each of the three isotopes is produced in roughly equivalent amounts by a reactor: each constitutes about 10% of the total activity of fission products ten days after reactor shutdown. On the other hand, ten days after a nuclear explosion, the contributions of zirconium-95, cerium-144, and cesium-137 to the activity of the resulting debris are in the approximate ratio 4:1:0.03 (Eisenbud,1963).
The other group quantified consists of niobium-95, ruthenium-103 and -106, cesium-134, barium-lanthanum-140, and cerium-141. These isotopes are released in small quantities by nuclear power plants, but to date their major source of injection into the general environment has been atmospheric nuclear testing. Nuclides of the next group, manganese-54, cobalt-58 and-60, and zinc-65, are activation products and arise from activation of corrosion products. They are typical components of nuclear power plant effluents but are not produced in significant quantities by nuclear detonation.
Nuclides of the final group, beryllium-7, which is of cosmogenic origin, and potassium-40, a naturally-occurring isotope, were chosen as analytical monitors and should not be considered radiological impact indicators.
Other means of distinguishing sources of environmental radiation can be employed in interpreting the data. Current radiation levels can be compared with previous levels, including pre-operational data. Results of the monitoring program can be related to those obtained in other parts of the world. Finally, results can be related to events known to cause elevated levels of radiation in the environment, e.g., a nuclear accident.
3 3.2 Program Description
The sampling and analysis schedules for the environmental radiological monitoring program at the Callaway Energy Center are summarized in Tables 5.1 and 5.2 and briefly reviewed below. Table 5.1 identifies sampling locations and specifies as to type (indicator or control) and its distance, and direction relative to the reactor site. The types of samples collected at each location, required analyses and the frequency of collections are presented in Table 5.2.
To monitor the air environment, airborne particulate and airborne iodine samples are collected by continuous pumping, at six locations. The airborne particulates are collected on glass fiber filters and the airborne iodine through activated charcoal cartridges. Both filters and cartridges are exchanged weekly. Airborne particulates are analyzed for gamma-emitting isotopes. Charcoal cartridges are analyzed for iodine-131.
The ingestion pathway is monitored by sampling of milk (if available), fish and green leafy vegetation.
Milk samples are collected semi-monthly when animals are on pasture and monthly the rest of the year. There were no milk indicator or control stations identified by the Land Use Census for the subject year. Milk samples are analyzed for iodine-131 and gamma-emitting isotopes when available.
Monthly during the growing season, edible green leafy vegetation is collected from both indicator and control locations. Vegetation samples typically consist of mustard greens, turnip greens, cabbage, lettuce, collards, radish greens, swiss chard, broccoli and poke. Other edible broad leaf vegetation is collected if primary varieties are not available. The samples are analyzed for iodine-131 and other gamma-emitting isotopes.
The waterborne pathway is monitored by sampling surface water, groundwater and drinking water, and shoreline sediments. Water samples are analyzed for tritium and gamma-emitting isotopes, and sediments are analyzed for gamma-emitting isotopes.
The waterborne pathway is also monitored by upstream and downstream semiannual collections of fish. The five most abundant recreational or commercial fish species are collected. The edible portions of the samples are analyzed for gamma-emitting isotopes.
Monthly composite samples of surface water from the Missouri River are collected from one indicator location (S02) and from one control location (S01). The surface water samples are composites of daily collections by automatic river samplers.
Onsite surface water from ponds is analyzed for tritium and gamma-emitting isotopes. The collection frequencies are semiannually.
To monitor possible sources of ground water contamination due to plant operations, non-potable ground water samples were collected monthly or quarterly from well locations both onsite and along the discharge pipeline. The samples were analyzed for tritium and gamma-emitting isotopes.
Potable well water samples are collected quarterly from the plant drinking water supply and neighboring property owners. The samples were analyzed for tritium and gamma-emitting isotopes.
Shoreline sediment is collected semiannually at the plant's intake (A) and discharge (C). These samples are collected within two feet of the edge of the water. The samples are analyzed for gamma-emitting isotopes.
4 3.2 Program Description (continued)
The direct ambient gamma radiation pathway is also considered. This exposure is monitored by thermoluminescent dosimeters (TLDs) at forty-four locations in and around the Callaway site. The TLDs are placed in 16 sectors around the plant as specified in the ODCM-RECS. Five of the TLD stations have neutron monitoring capability and three locations are designated as controls. TLDs are exchanged and analyzed quarterly.
Soil is collected annually from seven indicator locations (F2, F6, PR3, PR7, W2, W5 and W6) and two control locations (M9, W1) to monitor the terrestrial environment. The samples are analyzed for gamma-emitting isotopes.
3.3 Program Execution
The program was executed as described in the preceding section with the following exceptions.
(1) Airborne Particulates and Iodine:
On 02/07/2022 air samples at stations CA-A-1, CA-A-7, CA-A-8, CA-A-9, CA-A-10 and CA-A-11 were collected after 11 days due to unsafe conditions (CR#202200713).
The air samples at stations CA-A-1, CA-A-7, CA-A-8, CA-A-10 and CA-A-11 were collected 02/10/2022 after only 3 days due to the delay of the previous weeks collection (CR#202200713).
The air sampler at air station CA-A-9 was found with low flow. 09/08/2022 (CR#202205973). The overall sample volume was not adversely affected, and the sample was sent for analysis with the rest of the samples. No deviations found.
The air sampler at air station CA-A-8 was found not running, no saved data. 09/15/2022 (CR#202206142).
(2) Food Products -Leafy Green Vegetables:
April 2022 - Samples could not be collected at locations CA-FPL-V9, CA-FPL-V12, CA-FPL-V16 and CA-FPL-V19 due to cold temperatures (CR#202202274).
May 2022 - Samples could not be collected at locations CA-FPL-V9 and CA-FPL-V19 due to frost damage (CR#202203241).
September 2022 - Insufficient sample available for collection at location CA-FPL-V19 (CR#202206060).
October 2022 - Insufficient sample available for collection at location CA-FPL-V16 (CR#202206730).
(3) Surface Water:
River Samplers Out of Service Time:
Sampler S01, the upstream sampler located in the plant water intake structure about 550 feet upstream of the discharge, was out of service for approximately 1 days (0.4%
of the year) during 2022. This was scheduled maintenance to replace sampler heat trace. (Job 20004461).
5 3.3 Program Execution (continued)
Sampler S02, the downstream sampler located at the end of the mixing zone in Portland, MO, was out of service for approximately 28 days (7.7% of the year) during 2022. Most of this down time is accounted for in October and December 2022. During October, the sample pump became flooded and required repair, (CR 202206693).
During December, the downtime was due to sample lines and sample building freezing during extreme cold at the end of 2022. (CR 202208496). The sample pump and lines were repaired/replaced, and Portland returned to service 01/06/2023 11:48.
During those out of service times, daily grab samples are collected as required per Callaway's procedures.
(4) Wells and Ponds (non-potable water):
The well sample scheduled to be collected 02/08/2022 at location CA-WWA-U1MW-47 could not be collected (CR#202200814).
(5) Direct Radiation:
The TLD at location CA-IDM-39A (ODCM location) found damaged (CR202200067).
The TLD at location CA-IDM-49 was found missing during the collection of TLDs for the second quarter of 2022 (CR#202204548).
The TLD at location CA-IDM-06 was found wet, during the collection of TLDs for the second quarter of 2022 (CR#202204570).
The TLD at location CA-IDM-17 was moved due to original mounting pole being removed CR202204954).
3.4 Laboratory Procedures
Gamma-spectroscopic analyses were performed with HPGe detectors. Levels of iodine -131 in vegetation and concentrations of airborne iodine-131 in charcoal samples were also determined by gamma spectroscopy.
Tritium was measured by liquid scintillation.
Analytical procedures used by Environmental, Inc. are on file at the laboratory and are available for inspection. Procedures are based on those prescribed by the Health and Safety Laboratory of the U.S. Dep't of Energy, Edition 28, 1997, U.S. Environmental Protection Agency for Measurement of Radioactivity in Drinking Water, 1980, and the U.S. Environmental Protection Agency, EERF, Radiochemical Procedures Manual, 1984.
Environmental, Inc., Midwest Laboratory has a comprehensive quality control/quality assurance program designed to assure the reliability of data obtained. Details of the QA Program are presented elsewhere (Environmental, Inc., Midwest Laboratory, 2022). The QA Program includes participation in Interlaboratory Comparison (crosscheck) Programs. Results obtained through Quality control samples and crosscheck program results are presented in Appendix A.
Environmental TLDs are processed by Environmental Dosimetry Company, affiliated with Stanford Dosimetry, LLC.
6 3.5 Program Modifications
Location CA-WWA-U1MW-013, removed from the non-potable groundwater wells collection program in 2021, was added back into program in 2022 (CR#202202619).
Locations Wetlands 01 and Wetlands 02 were added to the pond sampling program in 2022 (CR#202202619).
The dosimeter at location CA-IDM-49 was moved from a sign at the site to the nearest electric pole approximately fifteen feet away so that it could be reoriented to directly face the plant. Both the gamma dosimeter CA-IDM-22a and its co-located neutron dosimeter CA-IDM-63N were repositioned so that they are no longer obstructed by conduit at their location. The dosimeter at location CA-IDM-33 was reoriented to face the plant directly. Dosimeters with orientations that were only 10 - 20 degrees out of alignment with the plant (CA-IDM-46, 23, 20, 18a, 05, 44, 31a, 60/60N, 35, 39, 39a and 40) were reoriented to face the plant directly. (CR#202204202-001)
3.6 Detection and Reporting Limits
Table 5.3 gives the minimum required detection limits for radiological environmental sample analysis. For each sample type, the table lists the detection level for each isotope. The lower limit of detection (LLD) used in this report is described in NRC Regulatory Guide 4.1 Rev. 1, "Program for Monitoring Radioactivity in the Environs of Nuclear Power Plants" and the NRC Radiological Assessment Branch Technical Position, Rev. 1, November 1979, "An Acceptable Radiological Environmental Monitoring Program".
3.7 Land Use Census
The Land Use Census is performed annually during the growing season. In 2022 the field inspection of the sectors was conducted September 9, 2022, within a five-mile radius of the Callaway Energy Center. The area around the plant was divided into 16 meteorological sectors.
The locations of the nearest resident, nearest milk animal, and nearest garden of greater than 500 square feet producing broadleaf vegetation were identified.
The results of the census are presented in Table 5.4. The table includes radial direction and distance from the Callaway Energy Center for each location. The bearings listed in Table 5.4 were measured from the Callaway Plant to the sample location.
There are no changes to the closest residents or closest broadleaf gardens in 2022. No milking animals were located during the survey.
All residents included in the summary were verified by the Callaway County Assessors GIS aerial photography.
The Missouri Department of Natural Resources has not identified any new water wells along the Mud Creek or Logan Creek corridors.
The US Army Corps of Engineers was contacted, and they confirmed that no new drinking water intakes have been located along the Missouri River within ten (10) river miles downstream from the Callaway Plant. In addition, no irrigation uses of the Missouri River were identified between the discharge point and Portland, MO during the survey.
3.8 Errata from previous Annual Radiological Environmental Operating Reports
None.
7 4.0 RESULTS AND DISCUSSION
All collections and analyses were made as scheduled, except for those listed in Table 5.5.
Results are summarized in Table 5.6 as recommended by the Nuclear Regulatory Commission.
For each type of analysis and sample medium, the table lists the mean and range of all indicator and control locations, as well as that location with the highest mean and range.
The tabulated results of all measurements are not included in this section, although references to these results will be made in the discussion. A complete tabulation of results for 2022 is contained in Part II of the Annual Report on the Radiological Environmental Monitoring Program for the Callaway Energy Center.
4.1 Atmospheric Nuclear Detonations and Nuclear Accidents
The Fukushima Daiichi nuclear accident occurred March 11, 2011. There were no reported accidents involving significant release to the environment at nuclear reactor facilities in 2022. The last reported atmospheric test was conducted on October 16, 1980, by the Peoples Republic of China. There were no reported atmospheric nuclear tests in 2022.
4.2 Program Findings
Airborne Particulates and Iodine
No gamma-emitting isotopes were identified other than naturally occurring Be-7. There was no I-131 activity detected in any of the charcoal canister samples.
Air sampling for 2022 indicates no radiological effects of plant operation.
Direct Radiation (TLDs)
Forty-four gamma sensitive TLDs were placed in 16 sectors around the Callaway site.
Measurements from forty-one indicator locations averaged 14.9 mrem/quarter and the three control locations averaged 14.1 mrem/quarter. Readings ranged from 10.1 to 17.6 mrem /quarter, with the highest quarterly average from the indicator location CA-IDM-51A, averaging 16.5 mrem/quarter.
The TLD readings were consistent with the results for the years 2000 through 2021 as detailed in table 5.7.
Five neutron sensitive TLDs were placed in locations at the Site Boundary closest to the Independent Spent Fuel Storage Facility Installation (ISFSI) and at a control location approximately 14 miles from the site. There was no significant measurable neutron dose and there was no effect from the ISFSI in 2022.
Milk
Sampling has been discontinued since 2018 since there are not enough sampling locations to fulfill the milk sampling requirement. No milking animals were located during the 2022 Land Use Census. Leafy green (broadleaf) vegetation sampling was performed in lieu of milk sampling.
Broadleaf Vegetation
There was no I-131 activity detected in broadleaf vegetation samples. No gamma-emitting isotopes were detected in broadleaf vegetation samples except for naturally occurring beryllium-7 and potassium-40. Vegetation data for 2022 show no radiological effects of plant operation.
8 4.2 Program Findings (Continued)
Fish
Edible portions of fish were analyzed by gamma spectroscopy. No gamma-emitting isotopes, except for naturally occurring potassium-40, were detected in fish.
Soil
Cesium-137 activity was detected at four of the seven indicator sample locations at an average concentration of 418 pCi/kg dry. Both control samples were positive for Cesium-137 with an average activity of 120 pCi/kg dry. The cesium-137 activity is consistent with levels observed from 1999 through 2021; these levels are attributable to the deposition of fallout from previous decades.
Surface Water
No tritium was detected in any of the upstream location S01 samples. Tritium was detected in six of the twelve downstream S02 locations at levels ranging from 174 pCi/L to 449 pCi/L. No gamma-emitting isotopes were detected in any of the samples taken in 2022.
Surface Water, Ponds
One of the eleven pond samples analyzed for tritium in 2022 was positive at a level of 162 pCi/L.
No gamma activity was detected. The reanalysis of the original and backup samples were <MDC.
Drinking Water Wells (potable water)
Sixty-four samples from sixteen different locations were analyzed for tritium and gamma-emitting isotopes in 2022. No tritium or gamma-emitting isotopes were detected.
Wells and Ponds (non-potable water)
Eight groundwater samples from deep wells F-05 and F-15 were analyzed for tritium and gamma-emitting isotopes. The 10/13/22 sample from well CA-WWA-F005 was positive for tritium at a concentration of 168 pCi/L. No gamma emitting isotopes detected form any of the deep well samples taken. The reanalysis of the original and backup samples both were <MDC.
Wells CA-WWA-U1MW-031, CA-WWA-U1MW-034, CA-WWA-U1MW-036, CA-WWA-U1MW-039, CA-WWA-U1MW-047, CA-WWA-U1MW-058, and CA-WWA-U1MW-059 were installed during the 2014 limited site investigation (LSI) (the 2014 LSI is described in detail in the Callaway Energy Center 2014 Annual Radioactive Effluents Release Report). These wells continue to monitor the natural attenuation of tritium which decreased significantly during 2015 and has generally continued to decrease since 2016. Tritium activity was detected in 17 of 25 results from these wells. The highest concentration was measured in CA-WWA-U1MW-31 which peaked at 458 pCi/L in November comparable to the 2021 high value of 574 pCi/L. This is likely because of seasonal variation. The average concentration among positive results for these wells was 270 pCi/L which is comparable to the 2021 average of 308 pCi/L. The contamination is being remediated by monitored natural attenuation. There are no active leaks.
Wells CA-WWA-U1MW-GWS, CA-WWA-U1MW-936, CA-WWA-U1MW-937B, CA-WWA-U1MW-937D, CA-WWA-U1MW-939R, CA-WWA-U1MW-940, CA-WWA-U1MW-941 and CA-WWA-U1MW-IFSFI (Sump) are located in the Plant Protected Area, adjacent to the power block. Tritium activity in the wells within the power block are believed to be the result of washout from gaseous
9 4.2 Program Findings (Continued)
Wells and Ponds (non-potable water) (Continued)
effluents. The low level tritium activity observed in well CA-WWA-U1MW-014 is likely due to residual low level contamination from moisture carryover during normal operation of air release valves (ARVs) in manholes 5 and 6B on the now-retired discharge pipeline. The pipeline was replaced in 2008 and there has been no new contamination of this area since then. The existing contamination is being remediated by monitored natural attenuation. There are no active leaks.
The results are consistent with 2015 through 2021.
Positive tritium results seen in results from location CA-WWA-U1MW-940 could be due to result of atmospheric tritium collecting in an excavation pit as described earlier in section 3.3 (5). The results at the groundwater sump (GWS) location and at location CA-WWA-U1MW-939R are in alignment with current trending (CR#202105648). See also CR#202204676-001.
Sediments
Two samples of shoreline sediments were collected in April and September 2022 at both an indicator and a control location and analyzed for gamma-emitting isotopes. No gamma-emitting isotopes were detected excepting naturally occurring potassium-40 in any of the sediment samples.
10 5.0 TABLES
11 Table 5.1. Sampling Locations. (TLDs) Update with additions(if any) and deletions
Location Distance / Sample Code Direction 1 Description Types 2 1a 10.8 mi. 310 o NW City of Fulton on Hwy Z, 0.65 mi. E of Bus. 54, W of Campus Apartments IDM 3 1.2 mi. 308 o NW 0.1 mi. West of Hwy CC on Gravel Rd., 0.8 mi. South Hwy O IDM 5 1.3 mi. 79 o ENE Meteorological Tower IDM 6 2.0 mi. 274 o W Cty Rd. 428, 1.2 mi. West of Hwy CC IDM 7 1.4 mi. 184 o S Cty Rd. 459, 2.6 mi. North of Hwy 94 IDM 9 3.8 mi. 183 o S NW Side of the Cty Rd. 459 and Hwy 94 Junction IDM 10 3.9 mi. 159 o SSE Hwy 94, 1.8 mi. East of Cty Rd. 459 IDM 11a 4.7 mi. 139 o SE City of Portland IDM 14 4.9 mi. 122 o ESE SE Side of Intersection Hwy D and Hwy 94 IDM 17 3.7 mi. 88 o E Cty Rd. 4053, 0.3 mi. E of Hwy 94 IDM 18a 3.7 mi. 67 o ENE East side of Hwy D, 0.5 mi. South of Hwy O IDM 20 4.7 mi. 46 o NE City of Readsville IDM 21 3.8 mi. 23 o NNE Cty Rd. 155, 1.9 mi. North of Hwy O IDM 22a 0.9 mi. 10 o NNE Cty Rd 448, 0.9 mi south of HWY O, co-located with air station A8 IDM 23 6.6 mi. 15 o NNE City of Yucatan IDM 26 3 11.7 mi. 82 o E Town of Americus IDM 27 3 9.3 mi. 114 o ESE Town of Bluffton IDM 30a 4.4 mi. 206 o SSW City of Steedman, N side of Belgian Dr., 150 ft. East of Hwy CC IDM 31a 7.8 mi. 224 o SW City of Mokane, Jct. Hwy C and Cty Rd. 400, 0.9 mi. N. of Hwy 94 IDM 32 5.4 mi. 250 o WSW Hwy VV, 0.6 mi. west of Cty Rd. 447 IDM 32a 5.0 mi. 243 o WSW Cty Rd. 447 IDM 33 7.4 mi. 272 o W City of Hams Prairie, SE of Hwy C and Hwy AD Junction IDM 34 9.5 mi. 292 o WNW NE Side of Hwy C and Cty Rd. 408 Junction IDM 35 5.8 mi. 340 o NNW City of Toledo IDM 36 4.9 mi. 7 o N Cty Rd. 155, 0.8 mi. South of Cty Rd. 132 IDM 37 0.5 mi. 195 o SSW Cty Rd. 459, 0.9 mi. South of Hwy CC IDM 38 4.6 mi. 334 o NNW Cty Rd. 133, 1.5 mi. South of Hwy UU IDM 39 5.4 mi. 312 o NW Cty Rd. 111 IDM 39a 5.0 mi. 308 o NW Cty Rd. 111 IDM 40 4.2 mi. 292 o WNW NE Side of Cty Rd. 112 and Hwy O Junction IDM 41 5.2 mi. 277 o W Hwy AD, 2.5 mi. East of Hwy C IDM 42 4.4 mi. 231 o SW Cty Rd. 447, 2.6 mi. North of Cty Rd. 463 IDM 43 0.5 mi. 223 o SW Cty Rd. 459, 0.7 mi. South of Hwy CC IDM 44 1.7 mi. 254 o WSW Hwy CC, 1.0 mi. South of Cty Rd. 459 IDM 45 1.0 mi. 285 o WNW Cty Rd. 428, 0.1 mi. West of Hwy CC IDM 46 1.5 mi. 328 o NNW NE Side of Hwy CC and Cty Rd. 466 Intersection IDM 47 1.0 mi. 10 o N Cty Rd. 448, 0.9 mi. South of Hwy O IDM 48 0.4 mi. NE Cty Rd. 448, 1.5 mi. South of Hwy O, Plant Security Sign Post IDM 49 1.6 mi. 95 o E Cty Rd. 448, Reform Wildlife Mgmt. Parking Area, Gate Post. IDM 50 0.9 mi. 168 o SSE Cty Rd. 459, 3.3 mi. North of Hwy 94 IDM 51a 0.3 mi. 150o SE Owner Control Fence, SE of the Water Treatment Plant IDM 52 0.4 mi. 111 o ESE Light Pole Near the East Plant Security Fence IDM 60 3 13.5 mi. 224 o SW Just past Tebbetts City sign IDM
12 Table 5.1. Sampling Locations. (TLDs, continued)
Location Distance / Description Sample Code Direction 1 Types 2 60N 3 13.5 mi 224 o SW Co-located with location 60 IDM 61 1.9 mi 334 o NNW Community of Reform, Corner of CC and O IDM 61N 1.9 mi 334 o NNW Co-located with location 61 IDM 62N 1.2 mi. 308 o NW Co-located with location 3 IDM 63N 0.9 mi. 10 o NNE Co-located with air station A8 and location 22a IDM 64N 1.0 mi. 285 o WNW Co-located with location 45 IDM
Table 5.1. Sampling Locations (Airborne Radioiodine and Particulate samples, Surface Ponds, Potable Water)
A1 1.3 mi. 79 o ENE Meteorological Tower APT, AIO A7 9.5 mi. 312 o NW C. Bartley Farm, Fulton, MO APT, AIO A8 0.9 mi. 10 o NNE County Road 448, 0.9 miles South of Hwy 0 APT, AIO A9 1.9 mi. 334 o NNW Community of Reform APT, AIO A10 0.89 mi 276 o W EOF Parking lot APT, AIO A11 0.71 mi 166 o SSE Sludge lagoons lift pumps area APT, AIO
3 2.9 mi. 168 o SSE Potable water, County Road 448 Ward Residence DWA 4 2.6 mi. 158 o SSE Potable water, County Road 448 Miller Residence DWA 5 2.5 mi. 153 o SSE Potable water, County Road 448 Brucker Brothers Farm DWA 7 2.1 mi. 108 o ESE Potable water, County Road 448 S. Kriete Residence DWA 8 4 3.4 mi. 193 o SSW Potable water, County Road 457 Curry Residence DWA 9 2.9 mi. 204 o SSW Potable water, County Road 457 Clardy Residence DWA 10 2.7 mi. 208 o SSW Potable water, County Road 457 T. Dillon Residence DWA 12 3.6 mi. 165 o SSE Potable water, County Road 464 J. Dillon Residence DWA 21 2.4 mi. 120 o ESE Potable water, County Road 469 Baumgarth Residence DWA 22 4.8 mi. 140 o SE Potable water, State Road 94 Plummer Residence DWA 23 5.6 mi. 142 o SE Potable water, County Road 466 Curdt Residence DWA 24 2.9 mi. 203 o SSW Potable water, County Road 457 Farley Residence DWA 25 1.89 mi. 79 o E Potable water, County Road 448 M. Kriete Residence DWA V16 1.64 mi. 255 o WSW Potable water, Hwy CC Wallendorf Farm, Steedman, MO DWA V19 3.28 MI. 162 o SSE Potable water, Dillon Drive, Dillon Farm, Portland, MO DWA PW1 Callaway Cafeteria, Potable water, Unit 1 Construction well #3 open from 400-1400 DWA 0.13 mi. 234 o SW
Pond 01 0.6 mi. 264 o W Fishing Pond SWA Pond 02 0.7 mi. 232 o SW Fishing Pond SWA Outfall 010 0.6 mi. 42 o NE Stormwater Run-Off Pond SWA Wetlands 01 0.6 mi. 152 o SSE Wetlands Pond #1 SWA Wetlands 02 0.7 mi. 160 o SSE Wetlands Pond #2 SWA Sludge Lagoon ~0.8 mi. 153 o SSE 5 In-service Sludge Lagoon SWA S01 3 4.8 mi. 150 o SSE 555 feet Upstream of Discharge North Bank SWA S02 4.9 mi. 138 o SE 1.1 River Miles Downstream of Discharge North Bank SWA
13 Table 5.1. Sampling Locations, Non-potable Groundwater Wells
Location Distance / Description Sample Code Direction 1 Types 2 U1MW-937B Plant Peninsula Area, Monitoring Well, West of the Turbine Bldg. WWA 0.04 mi. 209 o SSW U1MW-937D Plant Peninsula Area, Monitoring Well, North of Discharge Monitor Tanks WWA 0.1 mi. 92 o E U1MW-939R Plant Peninsula Area, Monitoring Well, East of the Fuel Bldg. WWA 0.05 mi. 109 o ESE U1MW-940 Plant Peninsula Area, Monitoring Well, West of the Radwaste Bldg. WWA 0.05 mi. 78 o ENE U1MW-941 Plant Peninsula Area, Monitoring Well, West of the Radwaste Bldg. WWA 0.07 mi. 81 o E U1MW-GWS Plant Peninsula Area, Ground Water Sump, West of Reactor Bldg. and Fuel Bldg. WWA 0.02 mi. 135 o SE U1MW-ISFSI ISFSI sump, Near ISFSI pad WWA 0.08 mi. 21 o NNE U1MW-004 3.7 mi. 165 o SSE South of Dillon residence, Groundwater Monitoring Well WWA U1MW-005 3.8 mi. 160 o SSE South of Brownlee / Hudson residence, Groundwater Monitoring WWA Well U1MW-006 3.0 mi. 171 o S South of Ward Residence, Groundwater Monitoring Well WWA U1MW-010 3.1 mi. 173 o S Old Pipeline Bed, Groundwater Monitoring Well WWA U1MW-013 0.8 mi. 159 o SSE Pipeline Corridor, south of sludge ponds WWA U1MW-014 3.7 mi. 171 o S Pipeline Corridor, near manhole 6B WWA U1MW-015 3.9 mi. 162 o SSE Pipeline Corridor, North of HWY 94. WWA U1MW-016 4.5 mi. 151 o SSE Pipeline Corridor, near heavy haul road at intake structure WWA U1MW-017 3.68 mi. 171 o S Pipeline Corridor, near manhole 6B WWA U1MW-018 3.75 mi. 172 o S Pipeline Corridor, near manhole 6B WWA U1MW-019 3.71 mi.172 o S Pipeline Corridor, near manhole 5 WWA U1MW-020 3.88 mi.164 o SSE Pipeline Corridor, near manhole 3B WWA U1MW-031 0.18 mi. 78 o ENE ~1m from manhole 86-2 & 1m from HDPE discharge pipeline WWA U1MW-034 0.21 mi. 98 o E ~130m from manhole 86-2, HDPE discharge line bedding WWA U1MW-036 0.26 mi. 122 o ESE ~300m from MH 86-2, HDPE discharge line bedding at cross WWA connection pipe U1MW-039 0.61 mi. 168 o SSE ~1100m from manhole 86-2, HDPE discharge line bedding WWA outside OCA o Upstream side of HDPE gate valve vault at intake structure inside U1MW-047 4.56 mi. 151 SSE HDPE pipeline bedding WWA U1MW-058 0.31 mi. 132 o SE ~400m from manhole 86-2, Techite discharge line bedding WWA U1MW-059 1.04 mi. 166 o SSE ~1700m from MH86-2, Techite discharge line bedding outside WWA OCA U2 MW 2S 1.8 mi. 5 o N Located on the periphery of the plateau WWA U2 MW 5S 1.1 mi. 261 o W Located on the periphery of the plateau WWA U2 MW 8 0.4 mi. 12 o NNE Located radially outward from central part of the plateau WWA U2 MW 16 2.9 mi. 203 o SSW Located along Mud Creek, Farley Property, screened for CJC WWA aquifer F05 0.9 mi. 169 o S CJC aquifer monitoring well WWA F15 0.4 mi. 29 o NNE Outside OCA fence in center portion of plateau, screened for CJC WWA aquifer
14 Table 5.1. Sampling Locations, Soil, Food Products, Milk, Fish, and Sediments.
Location Distance / Description Sample Code Direction 1 Types 2 F2 1.0 mi. 235 o SW Callaway Plant Forest Ecology Plot F2. SOL F6 1.6 mi. 51 o NE Callaway Plant Forest Ecology Plot F6. SOL PR3 0.95 mi. 108 o ESE Callaway Plant Forest Ecology Plot PR3. SOL PR7 0.46 mi. 320 o NNW Callaway Plant Forest Ecology Plot PR7. SOL W1 3 0.52 mi. 150 o SSE Callaway Plant Wetlands #1, High Ground. SOL W2 0.525 mi. 155 o SSE Callaway Plant Wetlands #1, Inlet Area. SOL W5 ~0.8 mi. 153 o SSE5 In-service Sludge Lagoon. SOL W6 0.67 mi. 154 o SSE Callaway Plant Wetlands #2, inlet area SOL M9 3 13 mi. 228 o SW Ferguson Farm, Tebbetts, MO. SOL
V9 1.9 mi. 294 o WNW Meehan Farm, Steedman, MO FPL V12 3 18.7 mi. 255 o WSW Kissock Farm, Holts Summit, MO FPL V16 1.64 mi. 255 o WSW Wallendorf Farm, Steedman, MO FPL V19 3.28 mi. 162 o SSE Richard and Amy Dillon Farm FPL
3,6 o Between 0.6 and 10.0 river miles upstream of the plant A ~4.8 mi. 150 SSE intake. AQF
A 3, ~4.8 mi. 150 o SSE Upstream of the plant intake. AQS
Downstream, of the plant discharge, between the C 6 ~4.9 mi. 138 o SE confluence of the Missouri River and Logan Creek and the AQF Portland boat ramp C ~4.9 mi. 138 o SE Vicinity of Portland - north bank AQS
1 Distances are measured from the midpoint of the two reactors as described in Final Safety Analysis Report (FSAR) Sec.
2.1.1.1.
2 AIO = Air Iodine, APT = Air Particulate, AQF = Fish, AQS = Sediment, FPL = Leafy Green Vegetables, FC = Food Crops, IDM = TLD, MLK = Milk, SOL = Soil, SWA = Surface Water, DWA = Drinking Water, WWA = Ground Water.
3 Control Location.
4 Property ownership changed from Brandt to Curry in 2022.
5 The coordinates of the in-service sludge lagoon are determined at the time of sampling in accordance with HTP-ZZ-07101-DTI-REMP-SMPL-SCHED.
6 The expanded collection areas provide sufficient habitat to collect the required number of species, see HTP-ZZ-07101-DTI-REMP-SMPL-SCHED.
15 Table 5.2. Collection Frequencies and Required Analyses 1 (January 1 through December 31, 2021)
Sample Type Media Collection Frequency Required Analyses Code Gamma dose for each sample.
Direct radiation IDM Quarterly Neutron dose for the samples monitoring ISFSI direct radiation.
Airborne iodine AIO Weekly 131I Air particulate APT Weekly PGE3 each sample Surface water (river) SWA Monthly composite PGE and 3H Surface water (onsite PGE and 3H. If contaminated with ponds) SWA Semiannually gamma emitting nuclides of plant origin, analyze for HTD4 nuclides.
PGE and 3H. If contaminated with Groundwater (not potable) WWA Quarterly5 gamma emitting nuclides of plant origin, analyze for HTD4 nuclides. 6 PGE and 3H. If contaminated with Well water-potable DWA Quarterly gamma emitting nuclides of plant origin, analyze for HTD4 nuclides.
Shoreline sediment AQS Semiannually PGE Sludge pond sediment SOL Annually PGE Soil SOL Annually PGE Semimonthly when Milk animal MLK animals are on pasture, PGE and 131I monthly other times Leafy green vegetables FPL Monthly when available 2 PGE and 131I
Fish AQF Semiannually PGE on edible portion
1 Samples required by ODCM unless specified otherwise.
2 The growing season is defined as the months April 1-November 1 but will vary according to weather conditions.
3 Principal Gamma Emitters (PGE) are defined as 54Mn, 59Fe, 58Co, 60Co, 65Zn, 95Zr/Nb, 134Cs, 137Cs, 140Ba/La and other gamma-emitting nuclides that may be identified during the gamma spectroscopy analysis.
4 Hard to Detect (HTD) nuclides are defined as 89Sr, 90Sr, 55Fe, 63Ni, 237Np, 238Pu, 239/240Pu, 241Pu, 241Am, 242Cm and 243/244Cm.
5 Monthly for locations U1MW-937B, U1MW-937D, U1MW-939R, U1MW-940, U1MW-941 and U1MW-GWS.
6 Wells ISFSI Sump, U1MW-18, U1MW-19, U1MW-20, U1MW-31, U1MW-34, U1MW-36, U1MW-39, U1MW-47, U1MW-58, U1MW-59, U2MW-2S, U2MW-5S, U2MW-8, and U2MW-16 are analyzed for tritium only.
16 Table 5.3. Minimum Required Detection Capabilities for REMP Sample Analysis1
Water Airborne Fish Milk Food Non-Food Soil and Analysis (pCi/L) (pCi/m3) (pCi/kg wet) (pCi/L) Products Products Sediment (pCi/kg wet) (pCi/kg wet) (pCi/kg dry)
H-3 3000/20003 3000
Mn-54 15 130
Fe-59 30 260
Co-58/60 15 130
Zn-65 30 260
Zr-Nb-95 2 15
I-131 1000/13 0.07 1 60
Cs-134 15 0.05 130 15 60 60 150
Cs-137 18 0.06 150 18 80 80 180
Ba-La-140 2 15 15
1 This list does not mean only these nuclides will be detected and reported. Other peaks which are measurable and identifiable will be reported.
2 Total activity, parent plus daughter activity.
3 LLDs for Surface and Drinking / Ground water are the same, with the exception of H-3 and I-131. The Drinking / Ground water LLDs for H-3 and I-131 are 2000 and 1 pCi/liter respectively.
17 Table 5.4 2022 Land Use Census Results
Closest Receptor in Miles
Sector Residence Garden 1, 2 Milk 1
N(A) 2.37 NI NI NNE(B) 2.16 2.97 NI NE(C) 2.26 NI NI ENE(D) 2.86 NI NI E(E) 3.51 NI NI ESE(F) 2.11 4.47 NI SE(G) 2.72 NI NI SSE(H) 3.11 3.28 NI S(J) 2.86 NI NI SSW(K) 2.38 NI NI SW(L) 2.63 2.72 NI
WSW(M) 1.20 1.96 NI W(N) 1.56 3.55 NI WNW(P) 1.93 1.93 NI NW(Q) 2.07 NI NI NNW(R) 1.81 NI NI
1 NI = None Identified.
2 Broadleaf Vegetation
18 Table 5.5. Missed Collections and Analyses, Callaway Energy Center
Sample Collection Date Type Analysis Location(s) or Period Comments
(CA-A-001, CA-A-007, Samples collected after 11 days due to APT/AIO Gamma CA-A-008, 02/07/2022 unsafe conditions (CR#202200713).
CA-A-009, CA-A-010)
(CA-A-001, CA-A-007, Samples collected after 3 days due to APT/AIO Gamma CA-A-008, 02/10/2022 collection delay from previous week CA-A-009, (CR#202200713).
CA-A-010)
WWA H-3 CA-WWA-U1MW-47 02/08/2022 Unable to collect water (CR#202200814).
(CA-FPL-V9, FPL Gamma CA-FPL-V12, April 2022 Unable to collect vegetables due to CA-FPL-V16, cold temperatures (CR#202202274).
CA-FPL-V19)
FPL Gamma (CA-FPL-V9, May 2022 Unable to collect vegetables due to frost CA-FPL-V19) damage (CR#202203241).
IDM Gamma CA-IDM-49 2nd Quarter 22 TLD missing in field (CR#202204570).
APT/AIO Gamma CA-A-009 09/08/2022 Air sampler found low flow (CR#202205973).
APT/AIO Gamma CA-A-008 09/15/2022 Air sampler found not running (CR#202206142).
FPL Gamma CA-FPL-V19 September 2022 Unable to collect enough vegetables (CR#202206060).
FPL Gamma CA-FPL-V16 October 2022 Unable to collect enough vegetables (CR#202206730).
19 Table 5.6 Radiological Environmental Monitoring Program Summary Number Indicator Location with Highest Control Non-Sample Type and Req'd Locations Annual Mean Locations Routine Type Number of LLD(b) Mean, Mean, Results(e)
(Units) Analyses(a) Fraction, Mean, Fraction, Range (c) Location (d) Fraction, Range (c)
Range (c)
Waterborne Pathway
Surface Water H-3 24 3000 282 (5/12) - - ND 0 (pCi/L) (174-449)
GS 2 4 (b) ND - - ND 0
Surface Water, H-3 11 3000 ND - - None 0 Ponds (pCi/L) GS 11 (b) ND - - None 0
H-3 64 2000 ND - - ND 0 Potable Wells GS 64 (b) ND - - ND 0 (pCi/L)
Wells H-3 176 3000 498 (84/176) CA-WWA-GWS 1626 (12/13) None 0 (non-potable) (159-6566) 0.02 mi. 135 o / SE (184-6566)
(pCi/L) GS 116 (b) ND - - None 0
Sediments Cs-134 4 150 ND - - ND 0 (pCi/kg) dry Cs-137 4 180 - 0 ND - ND
Airborne Pathway
Airborne Particulates GS 311 (b) ND - - None 0 (pCi/m3)
Airborne I-131 311 0.07 ND - - None 0 Iodine (pCi/m3)
Soil
Soil Cs-134 9 150 ND - - ND 0 (pCi/kg) dry Cs-137 9 180 418 (4/7) F-002 627 (1/1) 120 (2/2) 0 1.0 mi. 235 o / SW (183-627) (81-158)
20 Table 5.6 Radiological Environmental Monitoring Program Summary Indicator Location with Highest Control Number Sample Type and Req'd Locations Annual Mean Locations Non-Type Number of LLD(b) Mean, Mean, Mean, Routine (Units) Analyses(a) Fraction, Location (d) Fraction, Fraction, Results(e)
Range (c) Range (c) Range (c)
Ingestion Pathway
Food Products Leafy Green GS 57 (b) ND - - ND 0 Vegetables (pCi/kg wet)
Fish Edible Flesh GS 20 (b) ND - - ND 0 (pCi/kg) wet
Milk I-131 0 1 none - - ND 0 (pCi/L)
GS 0 (b) none - - ND 0
Direct Radiation
(Quarterly - 14.9 (161/161) CA-IDM-51A 16.5 (4/4) 14.1 (12/12) 0 TLDs) Gamma 173 (10.3-17.6) 0.3 mi. 150 o SE (15.7-17.1) (10.1-17.1)
(mrem/Qtr)
Neutron 20 - ND - - ND 0
(a) GS = gamma spectroscopy.
(b) LLD = nominal lower limit of detection based on a 4.66 sigma counting error for background sample. LLD's for gamma spectroscopy are in Table 5.3.
(c) Mean and range are based on detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (F). ND= not detected.
(d) Locations are specified by station code (Table 5.2) and distance (miles) and direct ion relative to reactor site.
(e) Non-routine results are those which exceed ten times the control station value. If no control station value is available, the result is considered non-routine if it exceeds ten times the preoperational value for the locat ion.
(f) Units: pCi/L.
21 Table 5.7 Direct Radiation Dose (mrem/90 days) for the Period 2000-2021
Station Code Mean 3 Mean + 3 Max
CA -IDM-1A 15.8 2.8 18.6 18.0
CA-IDM-3* 16.8 2.8 19.6 20.0 CA-IDM-5 14.2 2.7 17.0 17.1 CA-IDM-6 16.2 3.5 19.7 19.0 CA-IDM-7 16.0 3.1 19.1 19.0 CA-IDM-9 14.9 2.5 17.4 17.0 CA-IDM-10 17.0 2.6 19.6 19.3 CA-IDM-11A 17.0 2.9 19.9 19.3 CA-IDM-14 15.8 2.7 18.5 18.7 CA-IDM-17 15.9 3.0 18.9 18.3 CA-IDM-18A 16.1 4.5 20.5 18.9 CA-IDM-20 16.4 2.9 19.3 19.3 CA-IDM-21 16.2 3.4 19.6 19.0 CA-IDM-22A* 14.3 5.3 19.5 18.0 CA-IDM-23 16.5 2.6 19.1 19.0 CA-IDM-26(C) 11.3 2.3 13.6 13.1 CA-IDM-27(C) 17.1 2.9 19.9 20.0 CA-IDM-30A 15.6 2.7 18.3 18.2 CA-IDM-31A 16.9 2.7 19.5 19.0 CA-IDM-32 16.6 2.8 19.4 19.0 CA-IDM-32A 16.0 3.8 19.8 20.0 CA-IDM-33 15.9 2.6 18.5 18.0 CA-IDM-34 15.3 2.8 18.1 18.0 CA-IDM-35 14.7 2.6 17.3 17.3 CA-IDM-36 15.3 3.5 18.8 18.7 CA-IDM-37 15.7 2.8 18.5 18.0 CA-IDM-38 11.4 2.2 13.6 13.9 CA-IDM-39 15.7 3.1 18.8 19.0 CA-IDM-39A 16.3 3.3 19.6 19.0 CA-IDM-40 16.8 3.4 20.2 19.2 CA-IDM-41 15.7 3.1 18.8 19.0 CA-IDM-42 13.6 2.6 16.2 16.2 CA-IDM-43 15.8 2.9 18.7 18.7 CA-IDM-44 16.1 3.3 19.4 19.0 CA-IDM-45* 14.7 3.2 17.9 20.0 CA-IDM-46 16.3 2.7 19.0 19.9 CA-IDM-47 15.5 2.8 18.3 18.0 CA-IDM-48 16.4 2.9 19.4 19.0 CA-IDM-49 15.3 3.2 18.4 18.0 CA-IDM-50 16.1 3.0 19.1 20.0 CA-IDM-51A 16.9 2.7 19.7 19.8 CA-IDM-52 16.6 2.8 19.3 19.1 CA-IDM-60(C)* 16.0 2.6 18.6 18.0 CA-IDM-61* 14.1 4.4 18.5 15.7
- ISFSI monitoring (C) Control location
22
6.0 REFERENCES
Arnold, J. R. and H. A. Al-Salih. 1955. Beryllium-7 Produced by Cosmic Rays. Science 121: 451-453.
Eisenbud, M. 1963. Environmental Radioactivity, McGraw-Hill, New York, New York, pp. 213, 275-276.
Environmental, Inc., Midwest Laboratory. 2001 - 2021. Environmental Radiological Monitoring Program for the Callaway Energy Center, Annual Report - Part II, Data Tabulations and Analyses, January - December, 2000 - 2021
2022. Quality Manual, Rev. 8, 17 October 2022.
2022. Quality Control Procedures Manual, Rev. 5, 9 May 2022.
2012. Quality Assurance Program Manual, Rev. 3, 14 November 2012.
2009. Quality Control Program, Rev. 2, 12 November 2009.
Gold, S., H. W. Barkhau, B. Shlein, and B. Kahn, 1964. Measurement of Naturally Occurring Radionuclides in Air, in the Natural Environment, University of Chicago Press, Chicago, Illinois, 369-382.
Hammer, Gregory R.,Climate of Missouri, monograph available from the National Climatic Data Center (NCDC) of the National Oceanic and Atmospheric Administration (NOAA). January, 2006.
National Center for Radiological Health, 1968. Radiological Health and Data Reports, Vol. 9, Number 12, 730-746.
Stanford Dosimetry, LLC, 24 March 2023. Environmental Dosimetry Company, Annual Quality Assurance Status Report, January-December, 2022.
Teledyne Brown Engineering Environmental Services, Midwest Laboratory. 19 99 - 2000. Environmental Radiological Monitoring Program for the Callaway Plant, Annual Report - Part II, Data Tabulations and Analyses, January
- December, 1998 - 1999.
U.S. Environmental Protection Agency, 2007. RadNet, formerly Environmental Radiation Ambient Monitoring System, Gross Beta in Air (MO) 1981 - 2006, Gross Beta in Drinking Water (MO) 1982 - 2004.
Wilson, D. W., G. M. Ward and J. E. Johnson. 1969. Environmental Contamination by Radioactive Materials, International Atomic Energy Agency. p.125.
23
A-1
A-2
A-3
A-6 A-7 A-8 A-9 A-10 A-11 A-12 A-13 A-14 A-15
A-16
A-17
APPENDIX B. DATA REPORTING CONVENTIONS
Data Reporting Conventions
1.0. All activities, except gross alpha and gross beta, are decay corrected to collection time or the end of the collection period.
2.0. Single Measurements
Each single measurement is reported as follows: x +/- s where: x = value of the measurement; s = 2 counting uncertainty (corresponding to the 95% confidence level).
In cases where the activity is less than the lower limit of detection L, it is reported as: < L, where L = the lower limit of detection based on 4.66 uncertainty for a background sample.
3.0. Duplicate analyses
If duplicate analyses are reported, the convention is as follows. :
3.1 Individual results: For two analysis results; x1 +/- s1 and x2 +/- s2
Reported result: x +/- s; where x = (1/2) (x1 + x2) and s = (1/2)
3.2. Individual results: < L1, < L2 Reported result: < L, where L = lower of L1 and L2
3.3. Individual results: x +/- s, < L Reported result: x +/- s if x L; < L otherwise.
4.0. Computation of Averages and Standard Deviations
4.1 Averages and standard deviations listed in the tables are computed from all of the individual measurements over the period averaged; for example, an annual standard deviation would not be the average of quarterly standard deviations. The average and standard deviation s of a set of n numbers x1, x2... xn are defined as follows:
1 (x- )2
= n x s = n-1
4.2 Values below the highest lower limit of detection are not included in the average.
4.3 If all values in the averaging group are less than the highest LLD, the highest LLD is reported.
4.4 If all but one of the values are less than the highest LLD, the single value x and associated two sigma error is reported.
4.5 In rounding off, the following rules are followed:
4.5.1. If the number following those to be retained is less than 5, the number is dropped, and the retained numbers are kept unchanged. As an example, 11.443 is rounded off to 11.44.
4.5.2. If the number following those to be retained is equal to or greater than 5, the number is dropped and the last retained number is raised by 1. As an example, 11.445 is rounded off to 11.45.
B-1
Appendix C. NON-RADIOLOGICAL MONITORING PROGRAM
1.0. Introduction
Union Electric Company Callaway Plant, d.b.a. Ameren Missouri Callaway Energy Center, in accordance with federal regulations and a desire to maintain the quality of the local environment around Callaway Plant, has implemented the Environmental Protection Plan (EPP) contained in Appendix B of the Callaway Plant Operating License.
The objective of the EPP is to provide for protection of non-radiological environmental values during operation of the Callaway Plant.
This report describes the conduct of the EPP for the Callaway Plant during 2022.
2.0. Unusual or Important Events
No unusual or important events reportable under the EPP Section 4.1 were identified during 2022.
3.0. EPP Non-complianc es
During 2022, there w as zero non-compliance with the EPP.
4.0. Nonroutine Reports
There were no nonroutine reports submitted in accordance with the EPP, Section 5.4.2 in 2022.
5.0. Plant Design and Operation Environmental Evaluations.
This section lists all changes in the plant design, operation, tests or experiments installed during 2022, which could have involved a potentially significant unreviewed environmental question in accordance with section 3.1 of Appendix B.
During 2022, one major plant change w as completed that could have involved a potentially significant unreviewed environmental question. The interpretations and conclusions regarding this plant change, along with a description of the change and activity, are presented below.
C-1 RFR 210182 - C allaway Plant Outfall Closures
Description of Change:
RFR 210182 covers the closure of three separate stormwater settling ponds. Outfalls 13 through 15 were installed during construction as settling ponds to capture suspended solids from construction activities. Since that time, the site has stabilized, and a s a result, the ponds are shallow due to silt accumulation and provide very little retention time. Further, t he associated dams are in need of repair. Due to the cost of repairs, it is proposed to close the ponds and restore the site to its original configuration. Corporate Environmental approached DNR with this proposal and modified the NPDES permit to change from the current sampling points to newly installed sampling stations upstream of the ponds. The current NPDES permit reflects these approved changes.
Evaluation of Change:
As part of the Final Environmental Evaluation, both the ER and FES-OL were reviewed for any previously evaluated adverse environmental impacts and any new adverse environmental impacts not previously evaluated. No adverse environmental impacts were identified. The settling pond closures were designed to imitate the lay of the land before forming the ponds during plant construction.
This change does not involve an unreviewed environmental question, and therefore, NRC approval was not required.
C-2 APPENDIX D
Sampling Location Maps
D-1
) !
I
- N
c en
nergy I
I *\\ Ameren
TABLE OF CONTENTS
Section Page
List of Tables............................................................................................................... iii
1.0 Introduction.................................................................................................................. iv
2.0 Data Tables................................................................................................................... v
ii LIST OF TABLES
No. Title Page
1 Airborne particulates and charcoal cartridges, analysis for gamma-emitting isotopes, and iodine-131....................................................................................... 1-1
2 Milk, analysis for iodine-131 and gamma emitting isotopes................................................ 2-1
3 Vegetation, analysis for iodine-131 and gamma emitting isotopes..................................... 3-1
4 Soil, analysis for gamma-emitting isotopes......................................................................... 4-1
5 Surface water, analysis for tritium and gamma-emitting isotopes....................................... 5-1
6 Surface water (Ponds), analysis for tritium and gamma-emitting isotopes......................... 6-1
7 Drinking water, analysis for tritium and gamma-emitting isotopes...................................... 7-1
8 Wells (non-potable water), analysis for tritium and gamma-emitting isotopes.................... 8-1 8a Wells (non-potable water), analyses for hard-to-detect isotopes.......................... 8-9
- 9. Shoreline sediment, analysis for gamma-emitting isotopes................................................ 9-1
10 Fish, analysis for gamma-emitting isotopes...................................................................... 10-1
11 Direct Radiation
11a. Gamma dose.................................................................................................................... 11-1
11b. Neutron dose.................................................................................................................... 11-2
iii
1.0 INTRODUCTION
The following constitutes a supplement to the Annual Re port for the Radiological Environmental Monitoring Program conducted at the Ameren Missouri, Callaway Energy Center, Fulton, Missouri in 2022. Results of completed analyses are presented in the attached tables.
For information regarding sampling locations, type and frequency of collection, and sample codes, refer to Part I, Tables 5.1 - 5.2 and the figures in Appendix D.
Analyses results from additional sampling may be found in Appendix A.
iv 2.0 DATA TABLES
v 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12 2-1 3-1 3-2 3-3 4-1 5-1 5-2 6-1 7-1 7-2 7-3 8-1 8-2 8-3 8-4 8-5 8-6 8-7 8-8 8-9 9-1 10-1
10-2
11-1
11-2