RBG-47952, 2018 Annual Radiological Environmental Operating Report

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2018 Annual Radiological Environmental Operating Report
ML19126A085
Person / Time
Site: River Bend Entergy icon.png
Issue date: 05/01/2019
From: Schenk T
Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
RBG-47952
Download: ML19126A085 (46)
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Text

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~Enter gx Entergy Operations, Inc.

River Bend Station 5485 U.S. Highway 61 N St. Francisville. LA 70775 Tel 225-381-4177 Tim Schenk Manager-Regulatory Assurance RBG-47952 May 1, 2019 Attn: Document Control Desk U. S. Nuclear Regulatory Commissibn 11555 Rockville Pike Rockville, MD 20852-2738

Subject:

2018 Annual Radiological Environmental Operating Report River Bend Station - Unit 1 License No. NPF-47 Docket No'. 50-458 Enclosed is the River Bend Station (RBS) Annual Radiological Environmental Operating Report for the period of January 1, 2018 through December 31, 2018. This report is submitted in accordance with the RBS Technical Specifications, Section 5.6.2.

Should you have any questions regarding the enclosed, please contact Tim Schenk, at (225) 381-4177.

Tim Schenk TAS/tf

Enclosure:

2018 Annual Radiological Environmental Operating Report cc: NRC Region IV Regional Administrator, w/o Enclosure NRC Senior Resident Inspector- River Bend Station, Unit 1 Ji Young Wiley, Department of Environmental Quality, Office of Environmental Compliance, Radiological Emergency Planning and Response Section Public Utility Commission of Texas, Attn: PUC Filing Clerk NRC Project Manager

/-.......____.  !"-

Page 1 of 45 Plant: River Bend Station YEAR: 2018 Documen t Number: RBG-47952 Annual Radiologi cal Environm ental Operating Report

Plant: River Bend Station I Year: 2018 I Page 2 of 45 Annual Radiological Environmental Operating Report TABLE OF CONTENTS 1.0 EXECUTIVE

SUMMARY

.............................................................................................................5 1.1 Radiological Environmental Monitoring Program ...................................................................5 1

1.2 Reporting Levels ............................................................................ .......................................5 1.3 Comparison to State and Federal Program ...........................................................................6 1.4 Sample Deviations ................................................................................................................6 1.5 Program Modifications ...........................................................................................................6

2.0 INTRODUCTION

........................................................................................................................7 2.1 Radiological Environmental Monitoring Program ...................................................................7 2.2 Pathways Monitored ..............................................................................................................7 2.3 Land Use Census ..................................................................................................................?

3.0 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM REQUIREMENTS ...................... 8 4.0 INTERPRETATION AND TRENDS OF RESULTS .................................................................... 17 4.1 Air Particulate and Radioiodine Sample Results .................................................................. 17

, 4.2 Thermoluminescent Dosimetry (TLD) Sample Results ........................................................ 18 4.3 Waterborne Sample Results ................................................................................................18 4.3.1 Surface Water Results ............................................................................................................... 18 4.3.2 Groundwater Results ................................................................................................................. 19 4.3.3 Sediment Sample Results .......................................................................................................... 19 4.4 Ingestion Sample Results .................................................................................................... 19 4.4.1 Fish Sample Results ................................................................................................................... 19 4.4.2 Food Products Sample Results ................................................................................................... 19 4.4.3 Milk Sample Results .................................................................................................................... 19 4.5 Land Use Census Results ...................................................................................................20 4.6 lnterlaboratory Comparison Results ....................................................................................22 5.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

.......................... 22

Plant: River Bend Station I Year: 2018 I Page 3 of 45 Annual Radiological Environmental Operating Report ATTACHMENTS - Sample Deviations ........................................................................................................26 - Monitoring Results Tables ............................................................................................27 - lnterlaboratory Comparison Program Results ............................................................... 38 TABLES Table 1: Exposure Pathway-Airborne ........................................................................................8 Table 2: Exposure Pathway- Direct Radiation ............................................................................9 Table 3: Exposure Pathway - Waterborne ................................................................................. 12 Table 4: Exposure Pathway - Ingestion .....................................................................................13 Table 5: Land Use Census - 2018 Nearest Residence and Milk Animal Within 5 Miles ............. 21 Table 6: Radiological Environmental Monitoring Program Summary ......................................... 23 Table 7: Sample Deviations Table .............................................................................................26 Table 8: Air Particulate Data Table .................................. :.........................................................27 Table 9: Radioiodine Cartridge Data Table ...............................................................................28 Table 10: Thermoluminescent Dosimeters - lndicators .............................................................. 29 Table 11: Thermoluminescent Dosimeters - Special Interest Areas .......................................... 30 Table 12: Thermoluminescent Dosimeters - Controls ................................................................ 30 Table 13: Surface Water- Gamma ............................................................................................31 Table 14: Surface Water- Tritium .............................................................................................32 Table 15: Groundwater- Gamma ..............................................................................................33 Table 16: Groundwater - Tritum ................................................................................................34 Table 17: Sediment- Gamma ...................................................................................................35 Table 18: Fish - Gamma ......... : ..................................................................................................36 Table 19: Food Products - Gamma ...........................................................................................37 Table 20: Analytics Environmental Radioactivity_ Cross Check Program ................................... .40 Table 21: DOE's Mixed Analyte Performance Evaluation Program (MAPEP) ........................... .44 Table 22: ERA Environmental Radioactivity Cross Check Program ......................................... .45

Plant: River Bend Station Year: 2018 Page 4 of 45 Annual Radiological Environmental Operating Report FIGURES Figure 1: Exposure Pathway .....................................................................................................14 Figure 2: Sample Collection Sites - Near Field .......................................................................... 15 Figure 3: Sample Collection Sites - Far Field ............................................................................ 16 Figure 4: Gross Beta Indicator Results (2018) ........................................................................... 17 Figure 5: TLD Indicator Results (2018) Versus Control Data (1986-2018) ................................. 18

Plant: River Bend Station Year: 2018 Page 5 of 45 Annual Radiological Environmental Operating Report 1.0 EXECUTIVE

SUMMARY

1.1 Radiological Environmental Monitoring Program The Annual Radiological Environmental Operating Report presents data obtained through analyses of environmental samples collected for River Bend Station (RBS)

Radiological Environmental Monitoring Program (REMP) for the period January 1 through December 31, 2018. This report fulfills the requirements of RBS Technical Specification 5.6.2 of Appendix A to RBS License Number NPF-47.

All required lower limit of detection (LLD) capabilities were achieved in all sample analyses during 2018, as required by the RBS Technical Requirement Manual (TRM).

No measurable levels of radiation above baseline levels attributable to River Bend Station operation were detected in the vicinity of RBS. The 2018 Radiological Environmental Monitoring Program thus substantiated the adequacy of source control and effluent monitoring at River Bend Station with no observed impact of plant operations on the environment.

River Bend Station established the REMP prior to the station's becoming operational 1985 to provide data on background radiation and radioactivity normally present in the area. RBS has continued to monitor the environment by sampling air, water, sediment, fish and food products, as well as measuring direct radiation. RBS also samples milk if milk-producing animals used for human consumption are present within five miles (8 km) of the plant.

The REMP includes sampling indicator and control locations within an approximate 20-mile radius of the plant. The REMP utilizes indicator locations near the site to show any increases or buildup of radioactivity that might occur due to station operation and control locations farther away from the site to indicate the presence of only naturally occurring radioactivity. RBS personnel compare indicator results with control and preoperational results to assess any impact RBS operation might have had on the surrounding environment.

In 2018, environmental samples were collected for radiological analysis. The results of indicator locations were compared with control locations and previous studies. It was concluded that no significant relationship exists between RBS operation and effect on the area around the plant. The review of 2018 data showed radioactivity levels in the environment were undetectable in many locations and near background levels in significant pathways.

1.2 Reporting Levels No samples equaled or exceeded reporting levels.

Plant: River Bend Station I Year: 2018 I Page 6 of 45 Annual Radiological Environmental Operating Report 1.3 Comparison to State and Federal Program RBS personnel compared REMP data to state monitoring programs as results became available. Historically, the programs used for comparison have included the U.S. Nuclear Regulatory Commission (NRC) Thermoluminescent Dosimeter (TLD)

Direct Radiation Monitoring Network and the Louisiana Department of Environmental Quality- Office of Environmental Compliance (LDEQ-OEC).

The NRC TLD Network Program was discontinued in 1998. Historically these results have compared to those from the RBS REMP. RBS TLD results continue to remain similar to the historical average and continue to verify that plant operation is not affecting the ambient radiation levels in the environment.

The LDEQ-OEC and the RBS REMP entail similar radiological environmental monitoring program requirements. These programs include co-located air samples and splitting or sharing sample media such as water, sediment and fish. Both programs have obtained similar results over previous years.

1.4 Sample Deviations During 2018, environmental sampling was performed for five media types addressed in the ODCM and for direct radiation. A total of 120 samples of the 120 scheduled were obtained. Of the scheduleq samples, 100 percent were collected and analyzed in accordance with the requirements specified in the ODCM. Attachment 1 contains the listing of sample deviations and actions taken.

1.5 Program Modifications

  • There were no program modifications during the reporting period.

Plant: River Bend Station I Year: 2018 I Page 7 of 45 Annual Radiological Environmental Operating Report

2.0 INTRODUCTION

2.1 Radiological Environmental Monitoring Program River Bend Station established the REMP to ensure that plant operating controls properly function to minimize any associated radiation endangerment to human health or the environment. The REMP is designed for:

  • Analyzing applicable pathways for anticipated types and quantities of radionuclides released into the environment.
  • Considering the possibility of a buildup of long-lived radionuclides in the environment and identifying physical and biological accumulations that may contribute to human exposures.
  • Considering the potential radiation exposure to plant and animal life in the environment surrounding River Bend Station.
  • Correlating levels of radiation and radioactivity in the environment with radioactive releases from station operation.

2.2 Pathways Monitored The airborne, direct radiation, waterborne and ingestion pathways are monitored as required by RBS TRM 3.12.1. A description of the REMP utilized to monitor the exposure pathways is described in the attached Tables and Figures.

Section 4.0 of this report provides a discussion of 2018 sampling results with Section 5.0 providing a summary of results for the monitored exposure pathways.

2.3 Land Use Census RBS conducts a land use census biennially, as required by 3.12.2 of the TRM. The purpose of this census is to ,identify changes in uses of land within five miles of RBS that would require modifications to the REMP and the Offsite Dose Calculation Manual (ODCM/TRM).The next scheduled land use census will be performed in 2020.

Section 4.5 on the report contains a narrative on the results of the 2018 land use census.

Plant: River Bend Station I Year: 2018 / Page 8 of 45 Annual Radiological Environmental Operating Report 3.0 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM REQUIREMENTS Table 1: Exposure Pathway - Airborne Sample Point Description. Sampling and Collection Requirement Type and Frequency Of Analyses Distance and Direction Frequency RADIOIODINE AND PARTICULATES

  • AN1 (0.9 km W) - RBS site Hwy 965; 0.4 km south of Activity 2 samples from close to the 2 SITE Cor)tinuous sampler operation
  • Radioiodine Canisters 131 analysis every two Center.

BOUNDARY locations, in different sectors, of with sample collection every two weeks.

the highest calculated annual average ground

  • AP1 (0.9 km WNW) - Behind weeks, or more frequently if level D/Q. River Bend Station Activity required by dust loading.
  • Air Particulate - Gross beta radioactivity analysis Center. following filter change.

RADIOIODINE AND PARTICULATES

  • AQS2 (5.8 km NW) - St. Francis Continuous sampler operation
  • Radioiodine Canisters 131 analysis every two Substation on US Hwy. (Bus.) with sample collection every two weeks.

1 sample from the vicinity of a community 61 in St. Francisville. weeks, or more frequently if having the highest calculated annual average ground level D/Q.

~

required by dust loading.

  • Air Particulate - Gross beta radioactivity analysis following filter change.

RADIOIODINE AND PARTICULATES

  • AGC (17.0 km SE)- Entergy Continuous sampler operation
  • Radioiodine Canisters 131 analysis every two Service Center compound in with sample collection every two weeks.

1 sample from a control location, as for Zachary. (Control) weeks, or more frequently if example 15 - 30 km distance and in the least prevalent wind direction.

required by dust loading.

  • Air Particulate - Gross beta radioactivity analysis following filter change.

Plant: River Bend Station I Year: 2018 I Page 9 of 45 Annual Radiological Environmental Operating Report.

Table 2: Exposure Pathway - Direct Radiation Sample Point Description Distance Sampling and Requirement Type and Frequency Of Analyses and Direction Collection Frequency TLDS

  • TA1 (1.7 km N)- River Bend Training Center.

One ring of stations, one in each meteorological sector in the general area of Quarterly

  • mR exposure quarterly .
  • TB1 (0.5 km NNE) - Utility pole near the SITE BOUNDARY. River Bend Station cooling tower yard area.
  • TC1 (1.7 km NE)- Telephone pole at Jct. US Hwy. 61 and Old Highway 61.
  • TD1 (1.6 km ENE) - Stub pole along WF7, 150m S of Jct. WF7 and US Hwy. 61.
  • TE1 (1.3 km E) - Stub pole along WF7, 1 km S of Jct. WF7 and US Hwy. 61.
  • TF1 (1.3 km ESE) - Stub pole along WF7, 1.6 km S of Jct. WF7 and US Hwy. 61.
  • TG1 (1.6 km SE) - Stub pole along WF7, 2 km S of Jct. WF7 and US Hwy. 61.
  • TH1 (1.7 km SSE)- Stub pole at power line crossing of WF7 (near Grants Bayou). .
  • TJ1 (1.5 km S) - Stub pole near River Bend Station Gate #23 on Powell Station Road (LA Hwy. 965).

Plant: River Bend Station I Year: 2018 I Page 10 of 45 Annual Radiological Environmental Operating Report Table 2: Exposure Pathway - Direct Radiation Sample Point Description Distance Sampling and Requirement Type and Frequency Of Analyses and Direction Collection Frequency TLDS

  • TK1 (0.9 km SSW) - Utility pole on '

Powell Station Road (LA Hwy. 965),

One ring of stations, one in each Quarterly

  • mR exposure quarterly .

20 m S of River Bend Station River meteorological sector in the general area of Access Road.

the SITE BOUNDARY.

  • TL 1 (1.0 km SW)- First utility pole on Powell Station Road (LA Hwy . 965) S of former Illinois Central Gulf RR crossing.
  • TM1 (0.9 km WSW) - Third utility pole on Powell Station Road (LA Hwy. 965)

N of former Illinois Central Gulf RR crossing.

  • TN1 (0.9 km W) - Utility pole along Powell Station Road (LA Hwy. 965),

near garden and AN1 air sampler location.

  • TP1 (0.9 km WNW) - Behind River Bend Station Activity Center at AP1 air sampler location.
  • TQ1 (0.6 km NW)-Across from MA-1 on RBS North Access Road.
  • TR1 (0.8 km NNW) - River Bend Station North Access Road across from Main Plant entrance.

Plant: River Bend Station Year: 2018 Page 11 of 45 Annual Radiolo ical Environmental Operating Report Table 2: Exposure Pathway - Direct Radiation Sample Point Description Sampling and Requirement Type and Frequency Of Analyses Distance and Direction Collection Frequency TLDS

  • TAC (15.8 km N) - Utility pole at Jct.

of US Hwy. 61 and LA Hwy. 421, 7.9 The balance of the stations (8) to be placed in special interest areas such as population km north of Bains. (Control) Quarterly

  • mR exposure quarterly .

centers, nearby residences, schools, and in 1

  • TCS (12.3 km NE) - Utility pole at or 2 areas to serve as control locations. gate to East Louisiana State Hospital in Jackson. (Special)
  • TEC (16.0 km E) - Stub pole at jct.

of Hwy. 955 and Greenbrier Road, 4.8 km North of Jct. of Hwys 955 and 964. (Control)

  • TGS (17.0 km SE) - Entergy Service Center compound in Zachary.

(Special)

  • TNS (6.0 km W) - Utility pole with electrical meter at west bank ferry landing (LA Hwy. 10). (Special)
  • TQS1 (4.0 km NW)- Utility pole front of Pentecostal church (opposite West Feliciana Parish Hospital) near Jct.

US Hwy. 61 and Commerce Street.

(Special)

  • TQS2 (5.8 km NW) - St. Francis Substation on business US Hwy. 61 in St. Francisville. (Special)
  • TRS (9.2 km NNW) - Stub pole at Jct. of US Hwy. 61 and WF2 near Bains (West Feliciana High School).

(Special)

Plant: River Bend Station I Year: 2018 / Page 12 of 45 Annual Radiological Environmental Operating Report Table 3: Exposure Pathway - Waterborne Sample Point Description Distance Sampling and Requirement Type and Frequency Of Analyses and Direction Collection Frequency

  • Gamma isotopic analysis and tritium analysis liquid discharge outfall, near LA Hwy.

1 sample upstream and 1 sample 10 ferry crossing. quarterly.

downstream.

  • SWD (7.75 km 5)- Mississippi River about 4 km downstream from plant liquid discharge outfall, near paper mill.

GROUNDWATER

  • WU (-470 m NNE) - Upland Terrace Aquifer well upgradient from plant.

Samples from 1 or 2 sources only if likely to Semiannually

  • Gamma isotopic and tritium analysis semiannually.

be affected.

  • WD (-470 m SW) - Upland Terrace Aquifer well downgradient from plant.

SErnMENTFROMSHO RELINE

  • SEDD (7.75 km 5)- Mississippi River 1 sample from downstream area with existing about 4 km downstream from plant or potential recreational value. liquid discharge outfall, near paper Annually
  • Gamma isotopic analysis annually .

mill.

Plant: River Bend Station I Year: 2018 I Page 13 of 45 Annual Radiological Environmental Operating Report Table 4: Exposure Pathway - Ingestion Sample Point Description Distance Sampling and Collection Requirement Type and Frequency Of Analyses and Direction Frequency MILK

  • If commercially available, 1 sample from
  • Currently, no available milking animals Quarterly when animals are Gamma isotopic and 1-131 analysis quarterly when milking animals within 8 km distant where within 8 km of RBS. on pasture. animals are on pasture.

doses are calculated to be greater than 1 mrem per year.

  • 1 sample from milking animals at a control location 15 - 30 km distant when an indicator location exists.

I FISH AND INVERTEBRATES

  • FD (7.75 km S) - One sample of a commercially and/or recreationally
  • 1 sample of a commercially and/or important species from downstream Annually Gamma isotopic analysis on edible portions recreationally important species in vicinity annually area influenced by plant discharge.

of plant discharge area.

  • 1 sample of similar species in area not
  • FU (4.0 km WSW) - One sample of a commercially and/or recreationally influenced by plant discharge.

important species from upstream area not influenced by plant discharge.

FOOD PRODUCTS

  • GN1 (0.9 km W) - Sampling will be performed in accordance with Table
  • 1 sample of one type of broadleaf 3.12.1-1 Section 4.a of the Technical Quarterly during the growing Gamma isotopic and 1-131 analysis quarterly.

vegetation grown near the SITE season.

Requirements Manual.

BOUNDARY location of highest predicted annual average ground level D/Q if milk

  • GQC (32.0 km NW) - One sample of sampling is not performed.* similar vegetables from LA State Penitentiary at Angola. (Control)
  • 1 sample of similar broad leaf vegetation grown 15 - 30 km distant, if milk sampling is not performed.

Plant: River Bend Station I Year: 2018 I Page 14 of 45 Annual Radiological Environmental Operating Report Figure 1: Exposure Pathway NUCLEAR POWER PLANT

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Plant: River Bend Station Year: 2018 Page 15 of 45 Annual Radiological Environmental Operating Report Figure 2: Sample Collection Sites - Near Field Q R B (NW) (NNW) (NNE) I

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l Plant: River Bend Station I Year: 2018 I Page 16 of 45 Annual Radiological Environmental Operating Report Figure 3: Sample Collection Sites - Far Field B C (NNE) / (NE)

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Environmental Monitorin Locations I A_c Nr Sampler Control I A_S Air Sampler Special T_1 TLO Indicator I T_C TLO Control Special TLDs I

T_S GQC Vegetation Control I y Kilometers s,MJ Upstream Surface Water I s-ND Downstream Surface Water SEDD Downstream Sediment I FU Upstream Fish/Invertebrates I J H FD Downstream Fish/Invertebrates

( S) (SSE)

Plant: River Bend Station I Year: 2018 I Page 17 of 45 Annual Radiological Environmental Operating Report 4.0 INTERPRETATION AND TRENDS OF RESULTS 4.1 Air Particulate and Radioiodine Sample Results In 2018 there were no samples above the LLD for 1-131 . Indicator gross beta air particulate results for 2018 were comparable to results obtained from 2008-2017 of the operational REMP . Also , the 2018 gross beta annual average was less than the average for preoperational levels. Results are reported as annual average picocuries per cubic meter (pCi/m 3) .

Monitoring Period Result 2008 - 2017 (Minimum Value) 0.017 2018 Average Value 0.018 2008 - 2017 (Maximum Value) 0.026 Preoperational 0.030 Gross beta activity is attributed to naturally occurring radionuclides . Table 6, which include gross beta concentrations and provide a comparison of the indicator and control means and ranges emphasizes the consistent trends seen in this pathway to support the presence of naturally occurring activity. Therefore, it can be concluded that the airborne pathway continues to be unaffected by River Bend Station operations.

FIGURE 4 Gross Beta Indicator Results (2018) 0.0500 +------------------------------,

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+ - - - - - - - - - - - - - - - - - - - - - ~---=* - - - - - - - - - - 1 0.0100 0 .0000 - -~ - ~ -- ~ - ~ -- - - - - - - - ~ - - -- - - - - - - - '

01101 118 02101 118 03101 118 04101 118 05101 118 06101 118 07101118 08101 118 09/01 118 10/01 118 11101 118 12/01118 01 /01 119 I

  • AN1
  • AP 1 & AQS2 I

Pl ant: River Bend Station Year: 201 8 Page 18 of 45 Annual Radiolo ical Environmental Operatin Report 4.2 Therm oluminescent Dosimetry (TLD) Sample Results River Bend Station reports measured dose as net exposure (field reading less transit reading ) normalized to 90 days and relies on comparison of the indicator locations to the con trol as a measure of plant impact. River Bend Station's comparison of the indicato rand special interest area TLD results to the control , as seen in Table 6, identifie d no noticeable trend that would indicate that the ambient radiation levels are being affected by plant operations. In addition , the indicator value of 13.5 millirem (mrem) shown in the TLD radiation dose comparison graph below shows the 2018 concen tration is comparable to historic results. Overall , River Bend Station concluded that the ambient radiation levels are not being affected by plant operations.

FIGURE 5 TLD Indicator Results (2018) Versus Control Data (1986-2018) 20.00 18.00 16.00

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10.00 ** I I 8.00 6 .00 TA1 TB1 TC1 TD1 TE1 TF1 TG1 TH1 TJ1 TK1 TL 1 TM1 TN1 TP1 TQ1 TR1 Tl..D Locati ons I

- - +1-sigma Control - - sigma Con trol

  • 1st0tr
  • 2nd Otr A 3rd0tr X 4th Ql r 4.3 Waterb orne Sample Results Analyti cal results for 2018 surface water and groundwater water samples were similar to thos e reported in previous years . Gamma rad ionucl ides and tritium analytical results for 2018 waterborne samples were below the ODCM-required LLD similar to those reported in previous years . These results are further explained below.

4.3.1 Surface Water Results Sample s were collected from one indicator and one control location and analyzed for gamma radionuclides and tritium . Tritium and gamma radionuclides were below detecta ble limits wh ich is consistent with results seen in previous operational years.

Thereto re, the operation of River Bend Station had no definable impact on this waterb orne pathway during 2018.

Plant: River Bend Station I Year: 2018 J Page 19 of 45 Annual Radiological Environmental Operating Report 4.3.2 Groundwater Results Samples were collected from one indicator and one control location. Groundwater samples were analyzed for gamma radionuclides and tritium. Gamma radionuclides and tritium concentrations were below the LLD limits at the indicator and control locations. The operation of River Bend Station had no definable impact on this waterborne pathway during 2018.

4.3.3 Sediment Sample Results Sediment samples were collected from one indicator and one control location in 2018 and analyzed for gamma radionuclides. Gamma radionuclides were below the LLD limits at both indicator and control locations. River Bend Station operations had no significant impact on the environment or public by this waterborne pathway.

4.4 Ingestion Sample Results 4.4.1 Fish Sample Results Fish samples were collected from one indicator and one control location and analyzed for gamma radionuclides. In 2018, gamma radionuclides were below detectable limits which are consistent with the preoperational monitoring period and operational results. Therefore, based on these measurements, River Bend Station operations had no significant radiological impact upon the environment or public by this ingestion pathway.

4.4.2 Food Products Sample Results The REMP has detected radionuclides prior to 1990 that are attributable to other sources. These include the radioactive plume release due to reactor core degradation at Chernobyl Nuclear Power Plant in 1986 and atmospheric weapons testing.

In 2018, food products samples were collected when available from one indicator and one control location and analyzed for gamma radionuclides. The 2018 levels remained undetectable, as has been the case in previous years. Therefore, based on these measurements, River Bend Station operations had no significant radiological impact upon the environment or public by this ingestion pathway.

4.4.3 Milk Sample Results In 2018 milk samples within five miles (8 km) of River Bend Station were unable to be collected due to the unavailability of milk-producing animals used for human consumption. The River Bend Station Technical Requirements Manual requires collection of milk samples if available commercially within 8 km (5 miles) of the plant.

River Bend Station personnel collected food product samples to monitor the ingestion pathway, as specified in River Bend Station Technical Requirements Manual Table 3.12.1-1; because of milk unavailability. Food product sample results are in section 4.4.2. ,

Plant: River Bend Station Year: 2018 Page 20 of 45 Annual Radiological Environmental Operating Report 4.5 Land Use Census Results The latest land use census (performed in 2018) did not identify any new locations that yielded a calculated dose or dose commitment greater than those currently calculated (see Table 5).

A garden census is not conducted pursuant to the note in the TRM (TLCO 3.12.2) that allows the sampling of broad leaf vegetation in the highest calculated average ground-level D/Q sector near site boundary in lieu of the garden census.

The land use census identified one change. A new resident, located at a distance of

1. 7 km in Sector A, was identified in 2018. This occupied residence is 0.2 km closer to the site than the residence reported in previous census. There were no changes in the milk cows or food products in 2018.

Plant: River Bend Station I Year: 2018 I Page 21 of 45 Annual Radiological Environmental Operating Report Table 5: Land Use Census -2018 Nearest Residence And Milk Animal Within Five Miles Nearest Range Range Sector Direction Nearest Milk Animal Comment Residence (Unit) (Unit)

A N 5637 Hwy 61 - - 2 St. Francisville, LA 70775 1.7 B NNE 4549 Old Hwy 61 St. Francisville, LA 70775 1.4

- - ,' 2 C NE 4553 Old Hwy 61 St. Francisville, LA 70775 1.5

- - 2 D ENE 12657 Powell Station Rd.

St. Francisville, LA 70775 1.4

- - 2 E E 4635 Hwy 61 St. Francisville, LA 70775 2.4 - - 2 F ESE 12019 Fairview Way Jackson, LA 70748 2.6

- - 2 G SE 3319 Hwy 964 Jackson, LA 70748 3.7

- - 2 H SSE 11813 Powell Station Rd.

St. Francisville, LA 70775 1.7

- - 2 J s 11649 Powell Station Rd.

St. Francisville, LA 70775 1.8

- - 2 K SSW 8909 Hwy 981 New Roads, LA 70760 6.6

- - 2 L SW - - 1, 2 M WSW 8809 Hwy981 New Roads, LA 70760 5.1

- - 2 N w -- - - 1, 2 p WNW 10426 Old Field Rd.

St. Francisville, LA 70775 3.7 - - 2 Q NW 9537 Hwy 965 St. Francisville, LA 70775 1.3

- - 2 R NNW 9794 Hwy965 St. Francisville, LA 70775 - - 2 1.6

  1. Comment 1 No Residence was located within a five-mile (8 km) radius of River Bend Station 3.

2 No Milk animals were found located within a five-mile (8 km) radius of River Bend Station 3.

Plant: River Bend Station Year: 2018 Page 22 of 45 Annual Radiological Environmental Operating Report 4.6 lnterlaboratory Comparison Results Attachment 3 contains result summary for lnterlaboratory Comparison program for Teledyne Brown Engineering to fulfill the requirements of River Bend Station's Technical Requirements Manual 3.12.3.

5.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

1. Table 6, Radiological Environmental Monitoring Program Summary, summarizes data for the 2018 REMP prog"ram.

Plant: River Bend Station Year: 2018 Page 23 of 45 Annual Radiological Environmental Operating Report Table 6: Radiological Environmental Monitoring Program Summary Indicator Locations Location <4l Control Number of Sample Type Type / Number Mean (F)! 3 l LLD !2> Mean (F)( 3 l [Highest Locations Mean Non Routine (Units) of Analyses' 1l [Range].

[Range] Annual Mean] (F)( 3 l [Range] Results' 51 GB/ 104 0.01 0.0182 (78 / 78) AN1 0.0186 (26 / 26) 0.0182 (26 / 26) 0 Air Particulates

[0.008 - 0.031] (0.9 km W) [0.011 - 0.028] [0.008 - 0.028]

(pCi/m 3 )

Airborne Iodine 1-131 / 104 0.07 < LLD N/A N/A < LLD 0

{pCi/m 3 )

Gamma /64 (6)

Indicator TLDs 13.5 (64/64) TG1 15.6 (4 / 4) N/A 0 (mR/Qtr) [10.1 -17.7] (1.6 km SE) [15.4-16.0]

Special Interest Gamma /24 (6) 13.9 (24 / 24) TGS 15.3 (4 / 4) N/A 0 TLDs (mR/Qtr) [12.1-15.8]. (17.0 km SE) [14.3-15.8]

Gamma/ 8 (6)

Control TLDs N/A TAC 15.4 (4/4) 14.6 (8 / 8) 0

{mR/Qtr) (15.8 km N) (14.9-15.8 [13.7 -15.8]

H-3 / 8 700 < LLD NIA NIA < LLD 0 GS/8 Mn-54 15 < LLD N/A N/A < LLD 0 Co-58 15 < LLD N/A N/A < LLD 0 Fe-59 30 < LLD N/A N/A < LLD 0 Co-60 15 < LLD N/A N/A < LLD 0 Surface Water Zn-65 30 < LLD N/A NIA < LLD 0 (pCi/L)

Nb-95 15 < LLD N/A NIA < LLD 0 1-131 15 < LLD N/A N/A < LLD 0 Zr-95 30 < LLD N/A NIA < LLD 0 Cs-134 15 < LLD N/A N/A < LLD 0 Cs-137 18 < LLD N/A N/A < LLD 0 Ba-140 60 < LLD N/A N/A < LLD 0 La-140 15 < LLD N/A N/A < LLD 0

Plant: River Bend Station Year:2018 Page 24 of45 Annual Radiological Environmental Operating Report Table 6: Radiological Environmental Monitoring Program Summary Indicator Locations Location <4> Control Number of Sample Type Type/ Number Mean (F) 13>

LLD 2

<> Mean (F) 13> [Highest Locations Mean Non Routine (Units) of Analyses< 1> [Range]

[Range] Annual Mean] (F) 13> [Range) Results<5>

H-3 / 4 700 < LLD NIA N/A < LLD 0 GS/4 Mn-54 15 < LLD NIA N/A < LLD 0 Co-58 15 < LLD N/A N/A < LLD 0 Fe-59 30 < LLD NIA NIA < LLD 0 Co-60 15 < LLD NIA NIA < LLD 0 Groundwater Zn-65 30 < LLD NIA NIA < LLD 0 (pCi/L)

Nb-95 15 < LLD NIA NIA < LLD 0 1-131 15 < LLD NIA NIA < LLD 0 Zr-95 30 < LLD NIA NIA < LLD 0 Cs-134 15 < LLD NIA NIA < LLD 0 Cs-137 18 < LLD NIA NIA < LLD 0 Ba-140 60 < LLD NIA NIA < LLD 0 La-140 15 < LLD NIA NIA < LLD 0

Plant: River Bend Station Year:2018 Page 25 of 45 Annual Radiological Environmental Operating Report l

Table 6: Radiological Environmental Monitoring Program Summary Sample Type Type / Number Indicator Locations Location 141 Control Number of Mean (F) 131 LLD 121 Mean (F) 131 [Highest Locations Mean Non Routine (Units) of Analyses 111 [Range]

[Range] Annual Mean] (F) 131 [Range] Results 151 GSl2 Sediment Cs-134 150 < LLD NIA NIA < LLD 0 (pCilkg dry)

Cs-137 180 < LLD NIA NIA < LLD 0 GSl2 Mn-54 130 < LLD NIA NIA < LLD 0 Co-58 130 < LLD NIA NIA < LLD 0 Fish Fe-59 260 < LLD NIA NIA < LLD 0 (pCi/kg wet) Co-60 130 < LLD NIA NIA < LLD 0 Zn-65 260 < LLD NIA NIA < LLD 0 Cs-134 130 < LLD NIA NIA < LLD 0 Cs-137 150 < LLD NIA NIA < LLD 0 w

GSIB Food Products 1-131 < LLD NIA NIA NIA 0 (pCilkg wet) Cs-134 < LLD NIA NIA NIA 0 Cs-137 < LLD NIA NIA NIA 0 LEGEND:

11

' - GB= Gross beta; 1-131 = lodine-131; H-3 = Tritium; GS= Gamma scan.

2

< >- LLD = Required lower limit of detection based on River Bend Station TRM.

3

(  ! - Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis (F).

4

< >- Locations are specified (1) by name and (2) direction relative to reactor site.

(SJ - 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 location.

(Bl - LLD is not defined in River Bend Station TRM.

Plant: River Bend Station I Year: 2018 I Page 26 of 45 Annual Radiological Environmental Operating Report Attachment 1 Page 1 of 1 Sample Deviations Table 7: Sample Deviations Table Sample Comment Sample Media Date Problem Evaluation / Actions No. Location Affected Environmental air samplers at locations AN1 and AP1 indicated a loss of power Air AN1 for approximately 6.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. The power outage was due to a loss of power to 1 11/01/18 Power Outage Grant Substation on 11-1-18. All air samplers were operating normally at the Sample AP1 time of sample collection. Sample volumes are sufficient to meet lower limit of detection requirements. (CR-RBS-2018-6124)

Environmental air sampler at location AGC (Zachary) indicated a loss of power Air for approximately 50 minutes on 11/21/18. The air sampler was operating 2 AGC 11/21/18 Power Outage Sample normally at the time of sample collection. The sample volume is sufficient to meet the lower limit of detection requirements. (CR-RBS-2018-6429)

Plant: River Bend Station I Year: 2018 I Page 27 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 1 of 11 Monitoring Results Tables Table 8: Air Particulate Data Table Analysis: Gross Beta Units: pCi/m 3 AN1 11 > AP1 AQS2 AGC Start Date End Date (Indicator) (Indicator) (Indicator) (Control)

REQUIRED LLD + 0.01 0.01 0.01 0.01 12/26/2017 01/09/2018 0.027 0.029 0.031 0.028 01/09/2018 01/23/2018 0.020 0.019 0.019 0.019 01/23/2018 02/06/2018 0.017 0.018 0.017 0.017 02/06/2018 02/20/2018 0.013 0.014 0.014 0.012 02/20/2018 03/06/2018 0.013 0.012 0.011 0.011 03/06/2018 03/20/2018 0.019 0.019 0.019 0.023 03/20/2018 04/03/2018 0.019 0.018 0.016 0.019 04/03/2018 04/17/2018 0.020 0.021 0.019 0.020 04/17/2018 04/30/2018 0.017 0.018 0.015 0.018 04/30/2018 05/15/2018 0.028 0.027 0.026 0.027 05/15/2018 05/29/2018 0.019 0.017 0.021 0.019 05/29/2018 06/12/2018 0.020 0.018 0.019 0.020 06/12/2018 06/26/2018 0.014 0.016 0.014 0.014 06/26/2018 07/10/2018 0.017 --. 0.015 0.015 0.015 07/10/2018 07/24/2018 0.020 0.019 0.018 0.021 07/24/2018 08/07/2018 0.021 0.022 0.021 0.021 08/07/2018 08/21/2018 0.017 0.015 0.015 0.016 08/21/2018 09/04/2018 0.016 0.016 0.017 0.015 09/04/2018 09/18/2018 0.011 0.010 0.008 0.008 09/18/2018 10/02/2018 0.011 0.011 0.011 0.011 10/02/2018 10/16/2018 0.019 0.018 0.018 0.019 10/16/2018 10/30/2018 0.024 0.026 0.024 0.018 10/30/2018 11/13/2018 0.020(2 > 0.018(2 ) 0.018 0.020 11/13/2018 11/27/2018 0.025 0.025 0.024 0.027'3) 11/27/2018 12/11/2018 0.018 0.018 0.018 0.020 12/11/2018 12/26/2018 0.018 0.018 0.016 0.016 (1) Station with highest annual mean.

(2) See Attachment 1, Table 7, Sample Deviations Table, Comment 1 (3) See Attachment 1, Table 7, Sample Deviations Table, Comment 2

Plant: River Bend Station I Year: 2018 I Page 28 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 2 of 11 Monitoring Results Tables Table 9: Radioiodine Cartridge Data Table Analysis: 1-131 Units: pCi/m 3 AN1 AP1 AQS2 AGC Start Date End Date (Indicator) (Indicator) (Indicator) (Control)

REQUIRED LLD+ 0.07 0.07 0.07 0.07 12/26/2017 01/09/2018 < 0.009 < 0.022 < 0.021 < 0.022 01/09/2018 01/23/2018 < 0.008 < 0.020 < 0.020 < 0.020 01/23/2018 02/06/2018 < 0.009 < 0.020 <0.020 < 0.020 02/06/2018 02/20/2018 < 0.009 < 0.011 < 0.011 < 0.011 02/20/2018 03/06/2018 < 0.007 < 0.016 < 0.016 < 0.016 03/06/2018 03/20/2018 < 0.006 < 0.015 < 0.015 < 0.015 03/20/2018 04/03/2018 < 0.008 < 0.020 < 0.020 < 0.019 04/03/2018 04/17/2018 < 0.008 < 0.018 < 0.018 < 0.018 04/17/2018 04/30/2018 < 0.011 < 0.025 < 0.025 < 0.025 04/30/2018 05/15/2018 < 0.006 < 0.015 < 0.016 < 0.016 05/15/2018 05/29/2018 < 0.011 < 0.011 < 0.013 < 0.013 05/29/2018 06/12/2018 < 0.018 < 0.018 < 0.013 < 0.013 06/12/2018 06/26/2018 < 0.011 < 0.011 < 0.018 < 0.018 06/26/2018 07/10/2018 < 0.011 < 0.010 < 0.020 < 0.020 07/10/2018 07/24/2018 < 0.020 < 0.020 < 0.013 < 0.013 07/24/2018 08/07/2018 < 0.007 < 0.018 < 0.013 < 0.013 08/07/2018 08/21/2018 < 0.010 < 0.011 < 0.019 < 0.020 08/21/2018 09/04/2018 < 0.010 < 0.010 < 0.020 < 0.020 09/04/2018 09/18/2018 < 0.011 < 0.011 < 0.010 < 0.022 09/18/2018 10/02/2018 < 0.007 < 0.008 < 0.013 < 0.012 10/02/2018 10/16/2018 < 0.012 < 0.012 < 0.016 < 0.017 10/16/2018 10/30/2018 < 0.011 < 0.011 < 0.017 < 0.007 10/30/2018 11/13/2018 < 0.011( 1) < 0.015( 1) < 0.017 < 0.016 11/13/2018 11/27/2018 < 0.011 < 0.011 < 0.022 < 0.022( 2>

11/27/2018 12/11/2018 < 0.010 < 0.009 < 0.020 < 0.019 12/11/2018 12/26/2018 < 0.013 < 0.013 < 0.012 < 0.013 (1) See Attachment 1, Table 7, Sample Deviations Table, Comment 1 (2) See Attachment 1, Table 7, Sample Deviations Table, Comment 2

Plant: River Bend Station I Year: 2018 I Page 29 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 3 of 11 Monitoring Results Tables Table 10: Thermoluminesce nt Dosimeters - Indicators Analysis: Gamma Dose Units: mrem/Std. Qtr.

1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean Station 2018 2018 2018 2018 2018 TA1 11.1 10.5 10.6 12.1 11.1 TB1 14.6 14.2 14.7 15.4 14.7 TC1 15.5 14.8 14.4 15.8 15.1 TD1 15.0 15.3 15.5 15.5 15.3 TE1 13.6 13.7 14.6 13.9 14.0 TF1 14.0 14.3 14.4 14.3 14.3 TG1< 1l 15.5. 16.0 15.4 15.4 15.6 TH1 12.5 12.6 12.1 12.2 12.4 TJ1 12.8 13.8 17.7 13.3 14.4 TK1 13.8 13.9 13.7 14.1 13.9 TL 1 14.0 14.7 14.2 14.6 14.4 TM1 12.9 12.5 11.6 13.2 12.5 TN1 13.9 14.6 13.6 14.1 14.1 TP1 13.0 13.9 12.8 13.2 13.2 TQ1 10.9 10.6 10.1 11.0 10.6 TR1 10.4 10.4 10.3 10.7 10.5 1

( l Indicator station with highest annual mean.

Plant: River Bend Station Year: 2018 Page 30 of 45 Annual Radiologica l Environmen tal Operating Report Attachment 2 Page 4 of 11 Monitoring Results Tables Table 11: Thermolumin escent Dosimeters - Special Interest Areas Analysis: Gamma Dose Units: mrem/Std. Qtr.

1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean Station 2018 2018 2018 2018 2018 TCS 12.7 12.5 12.1 12.7 12.5 TGS 11 > 14.3 15.8 15.6 15.5 15.3 TNS 12.9 13.9 13.4 14.2 13.6 TRS 13.9 15.1 13.8 14.4 14.3 TQS1 14.2 15.4 15.1 15.4 15.0 TQS2 13.0 12.9 12.2 12.9 12.7 1

( J Special interest station with highest annual mean.

Table 12: Thermolumin escent Dosimeters - Control Analysis: Gamma Dose Units: mrem/Std. Qtr.

1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Annual Mean Station 2018 2018 2018 2018 2018 TAC 111 14.9 15.4 15.4 15.8 15.4 TEC 13.9 13.9 13.7 14.2 13.9 1

( l Control station with highest annual mean.

Plant: River Bend Station Year: 2018 Page 31 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 5 of 11 Monitoring Results Tables Table 13* Surface Water - Gamma Analysis: Gamma Isotopic Units: pCi/L Location Start Date End Date Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 1-131 Zr-95 Cs-134 Cs-137 Ba-140 La-140 REQUIRED LLD -+ 15 15 30 15 30 15 15 30 15 18 60 15 SWD 02/22/2018 02/22/2018 < 5.16 < 6.11 < 9.73 < 4.94 < 11.0 < 6.25 < 9.38 < 11.3 < 6.65 < 5.25

/Indicator) < 29.1 < 10.8 swu 02/22/2018 02/22/2018 < 7.62 < 7.06 < 15.3 < 6.46 < 15.0 < 7.69 < 13.2 < 15.1 < 9.13 < 6.58 < 37.1 < 11.7 (Control)

SWD 05/08/2018 05/08/2018 < 2.19 < 2.57 < 5.39 < 2.90 < 5.38 < 3.05 < 7.78 < 4.67 < 2.99 < 2.65 < 18.5 < 5.98

/Indicator)

SWU 05/08/2018 05/08/2018 < 3.88 < 3.24 < 5.90 < 3.72 < 7.56 < 3.57 < 13.2 < 7.21 < 3.73 < 4.13 (Control) < 27.2 < 8.19 SWD 07/31/2018 07/31/2018 < 2.07 < 2.33 < 5.54 < 2.05 <4.26 < 2.31 < 11.8 < 4.10 < 2.26 < 2.11 (Indicator) < 20.6 < 7.38 SWU 07/31/2018 07/31/2018 < 2.14 < 2.40 < 5.34 < 2.29 < 4.31 < 2.50 < 14.0 < 4.40 < 2.49 < 2.33 (Control) < 24.1 < 7.48 SWD 11/13/2018 11/13/2018 < 6.93 < 5.81 < 16.4 < 5.37 < 17.1 < 7.53 < 11.9 < 9.50 < 4.40 < 6.66 (Indicator) < 34.1 < 11.3 SWU 11/13/2018 11/13/2018 < 8.03 < 7.79 < 12.7 < 7.05 < 17.1 < 7.88 < 12.1 < 15.3 < 8.65 < 6.84 < 39.3 < 12.9 (Control)

Plant: River Bend Station I Year: 2018 I Page 32 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 6 of 11 Monitoring Results Tables Table 14: Surface Water-Tritium Analysis: H-3 Units: pCi/L Location Start Date End Date H-3 REQUIRED LLD + 700 SWD (Indicator) 02/22/2018 02/22/2018 < 599 SWU (Control) 02/22/2018 02/22/2018 < 590 SWD (Indicator) 05/08/2018 05/08/2018 < 547 SWU (Control) 05/08/2018 05/08/2018 < 555 SWD (Indicator) 07/31/2018 07/31/2018 < 634 SWU (Control) 07/31/2018 07/31/2018 < 641 SWD (Indicator) 11/13/2018 11/13/2018 < 624 SWU (Control) 11/13/2018 11/13/2018 < 628

Plant: River Bend Station Year: 2018 Page 33 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 7 of 11 Monitoring Results Tables Table 15: Groundwater - Gamma Analysis: Gamma Isotopic Units: pCi/L Collection Location Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 1-131 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Date REQUIRED LLD + 15 15 30 15 30 15 15 30 15 18 60 15 WO (Indicator) 05/08/2018 < 1.62 < 1.77 < 3.96 < 1.80 < 3.39 < 1.90 < 5.61 < 3.26 < 1.80 < 1.76 < 11.9 < 3.93 WU (Control) 05/08/2018 < 1.39 < 1.51 < 3.25 < 1.41 < 2.79 < 1.62 < 4.88 < 2.70 < 1.54 < 1.54 < 10.8 < 3.48 WO (Indicator) 11/14/2018 < 5.02 < 4.27 < 11.7 < 4.67 < 10.2 < 5.57 < 12.1 < 11.0 < 5.53 < 5.14 < 29.1 < 9.57 WU (Control) 11/14/2018 < 4.77 < 5.16 < 11.0 < 5.38 < 12.6 < 5.94 < 14.0 < 10.1 < 5.85 < 5.71 < 36.9 < 10.8

Plant: River Bend Station I Year: 2018 I Page 34 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 8 of 11 Monitoring Results Tables -

Table 16: Groundwater - Tritium Analysis: H-3 Units: pCi/L Location Start Date End Date H-3 REQUIRED LLD ~ 700 WO (Indicator) 05/08/2018 05/08/2018 < 553 .

WU (Control) 05/08/2018 05/08/2018 < 553 WO (Indicator) 11/14/2018 11/14/2018 < 586 WU (Control) 11/14/2018 11/14/2018 < 596

Plant: River Bend Station I Year: 2018 I Page 35 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 9 of 11 Monitoring Results Tables Table 17: Sediment- Gamma Analysis: Gamma Isotopic Units: pCi/kg (dry)

Location I Collection Date Cs-134 Cs-137 REQUIRED LLD + 150 180 SEDD (Indicator) I 08/16/2018 < 57.01 < 50.72 SEDU (Control) I 08/16/2018 < 87.49 < 66.75

Plant: River Bend Station I Year: 2018 I Page 36 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 1O of 11 Monitoring Results Tables Table 18: Fish - Gamma Analysis: Gamma Isotopic Units: pCi/kg (wet)

Collection Location Mn-54 Co-58 Fe-59 Co-60 Zn-65 Cs-134 Cs-137 Date REQUIRED LLD ~ 130 130 260 130 260 130 150 FD 09/24/2018 < 24.66 < 25.51 < 74.39 < 34.01 < 66.74 < 33.38 < 32.99 (Indicator)

FU 09/24/2018 < 49.73 < 52.67 < 115.0 < 42.44 < 133.6 < 35.62 < 43.32 (Control)

Plant: River Bend Station I Year: 2018 I Page 37 of 45 Annual Radiological Environmental Operating Report Attachment 2 Page 11 of 11 Monitoring Results Tables Table 19: Food Products - Gamma Analysis: Gamma Isotopic Units: pCi/kg (wet)

Location Collection Date 1-131 Cs-134 Cs-137 REQUIRED LLD + 60 60 80 GN1 (Indicator) 03/08/2018 < 51.45 < 21.20 < 19.47 GQC (Control) 03/12/2018 < 49.20 < 23.98 < 27.57 GN1 (Indicator) 06/04/2018 < 30.33 < 10.08 < 9.025 GQC (Control) 06/11/2018 < 24.37 < 17.33 < 13.90 GN1 (Indicator) 08/14/2018 < 32.68 < 9.072 < 8.673 GQC (Control) 08/16/2018 < 48.65 < 19.78 < 19.94 GN1 (Indicator) 11/14/2018 < 57.49 < 23.79 < 24.73 GQC (Control) 11/14/2018 < 13.73 < 5.935 < 5.393

Plant: River Bend Station I Year: 2018 I Page 38 of 45 Annual Radiological Environmental Operating Report Attachment 3 Page 1 of 8 lnterlaboratory Comparison Program Results 1.0 Summary For the Teledyne Brown Engineering (TBE) laboratory, 166 out of 172 analyses performed met the specified acceptance criteria. Six analyses did not meet the specified acceptance criteria for the following reasons and were addressed through the TBE Corrective Action Program.

Note: The Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP) samples are created to mimic conditions found at DOE sites which do not resemble typical environmental samples obtained at commercial nuclear power facilities.

1. TBE was unable to report the February 2018 DOE MAPEP vegetation Sr-90 result due to QC failure and limited sample amount. (NCR 18-09)
2. The Analytics September 2018 milk Fe-59 result was evaluated as Not Acceptable (Ratio of TBE to known result at 132%). The reported value was 158 +/- 17.6 pCi/L and the known value was 119 +/- 19.9 pCi/L. No cause for the failure could be determined. TBE has passed 24 of the previous 27 milk cross-check results since 2012. This sample was run in duplicate on a different detector with comparable results (162 +/- 16 pCi/L). NOTE: TBE's 4th Qtr result passed at 105% (NCR 18-20)
3. The Analytics September milk 1-131 result was evaluated as Not Acceptable (Ratio of TBE to known result at 143%). Due to a personnel change in the gamma prep lab, the sample was not prepped/counted in a timely manner such as to accommodate the 1-131 8-day half-life. Analysts have been made aware of the urgency for this analysis and it will be monitored more closely by QA.

NOTE: TBE's 4th Qtr result passed at 101% (NCR 18-24)

4. The Analytics September soil Cr-51 result was evaluated as Not Acceptable (Ratio of TBE to known result at 131 %). As with #3 above, the sample was not prepped/counted in a timely manner such as to accommodate the Cr-51 27-day half-life. The same corrective action applies here as in #3. (NCR 18-21)
5. The MAPEP November vegetation Sr-90 result of 0.338 Bq/sample was evaluated as Not Acceptable (Lower acceptable range was 0.554 Sq/sample). It appears that there has been incomplete dissolution of Sr-90 due to the composition of the MAPEP vegetation "matrix". To resolve this issue, the TBE-2018 procedure has been modified to add H202 to assist in breaking down the organic material that comprises this "matrix". This corrective action will be monitored closely by QA. (NCR 18-25).

Plant: River Bend Station Year: 2018 Page 39 of 45 Annual Radiological Environmental Operating Report Page 2 of 8 lnterlaboratory Comparison Program Results

6. The ERA October 2018 water Sr-90 sample was evaluated as Not Acceptable.

TBE's initial reported result of 36.8 pCi/L exceeded the upper acceptance range (22.9 - 36.4 pCi/L). After reviewing the data for this sample, it was discovered that there was a typographical error at the time the results were entered at the ERA website. The correct result in LIMS of 36.2 should have been submitted instead. This result is within ERA's acceptance limits. In addition to the typo error, ERA's very stringent upper acceptance limit of 116%

is not a reflection of TBE's ability to successfully perform this analysis. (NCR 18-23)

The Inter-Laboratory Comparison Program provides evidence of "in control" counting systems and methods, and that the laboratories are producing accurate and reliable data.

Plant: River Bend Station I Year: 2018 I Page 40 of45 Annual Radiological Environmental Operating Report Attachment 3 Page 3 of 8 Table 20: Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Ratio of TBE to Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value <*l Analytics Result Value March 2018 E12133 Milk Sr-89 pCi/L 76.1 90.1 0.84 A Sr-90 pCi/L 12.2 12.5 0.98 A E12134 Milk Ce-141 pCi/L 77.8 77.0 1.01 A Co-58 pCi/L 105 114 0.92 A Co-60 pCi/L 181 187 0.97 A Cr-51 pCi/L 298 326 0.92 A Cs-134 pCi/L 150 180 0.84 A Cs-137 pCi/L 164 172 0.95 A Fe-59 pCi/L 140 139 1.01 A 1-131 pCi/L 105 108.0 0.97 A Mn-54 pCi/L 133 131 1.01 A Zn-65 pCi/L 242 244 0.99 A E12135 Charcoal 1-131 pCi 93.7 95.4 0.98 A E12136 AP Ce-141 pCi 92.6 85.3 1.09 A Co-58 pCi 130 126 1.03 A Co-60 'pCi 237 207 1.14 A Cr-51 pCi 411 361 1.14 A Cs-134 pCi 194 199 0.98 A Cs-137 pCi 200 191 1.05 A Fe-59 pCi 160 154 1.04 A Mn-54 pCi 152 145 1.05 A Zn-65 pCi 267 271 0.99 A E12137 Water Fe-55 pCi/L 1990 1700 1.17 A E12138 Soil Ce-141 pCi/g 0.148 0.118 1.26 w Co-58 pCi/g 0.171 0.174 0.98 A Co-60 pCi/g 0.297 0.286 1.04 A Cr-51 pCi/g 0.537 0.498 1.08 A Cs-134 pCi/g 0.274 0.275 1.00 A Cs-137 pCi/g 0.355 0.337 1.05 A Fe-59 pCi/g 0.243 0.212 1.15 A Mn-54 pCi/g 0.228 0.201 1.14 A Zn-65 pCi/g 0.395 0.374 1.06 A (a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A= Acceptable -reported result falls within ratio limits of0.80-1.20 W= Acceptable with warning-reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< o. 70 and> 1.30 (Page 1 of 6)

Plant: River Bend Station I Year:2018 I Page 41 of 45 Annual Radiological Environmental Operating Report Attachment 3 Page 4 of 8 Table 20: Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Ratio ofTBE to Month/Year Matrix Nuclide Units Reported Evaluation Cb)

Number Value (a) Analytics Result Value June 2018 E12205 Milk Sr-89 pCi/L 74.9 84.6 0.89 A Sr-90 pCi/L 10.5 11.4 0.92 A E12206 Milk Ce-141 pCi/L 89.2 82.2 1.08 A Co-58 pCi/L 94.8 89 1.07 A Co-60 pCi/L 125 113 1.10 A Cr-51 pCi/L 256 239 1.07 A Cs-134 pCi/L 112 114 0.99 A Cs-137 pCi/L 107 98.8 1.08 A Fe-59 pCi/L 95.9 86.0 1.12 A 1-131 pCi/L 69.8 71.9 0.97 A Mn-54 pCi/L 138 130 1.06 A Zn-65 pCi/L 186 157 1.18 A E12207 Charcoal 1-131 pCi 69.6 72.2 0.96 A E12208 AP Ce-141 pCi 151 165 0.92 A Co-58 pCi 174 178 0.98 A Co-60 pCi 290 227 1.28 w Cr-51 pCi 452 478 0.95 A Cs-134 pCi 215 227 0.95 A Cs-137 pCi 206 198 1.04 A Fe-59 pCi 180 172 1.05 A Mn-54 pCi 265 260 1.02 A Zn-65 pCi 280 315 0.89 A E12209 Water Fe-55 pCi/L 1790 1740 1.03 A E12210 AP Sr-89 pCi 77.8 90.3 0.86 A Sr-90 pCi 9.54 12.2 0.78 w (a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A= Acceptable -reported result falls within ratio limits ofO.B0-1.20 W = Acceptable with warning - reported result falls within o. 70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< 0. 70 and> 1.30 (Page 2 of 6)

Plant: River Bend Station Year: 2018 Page 42 of 45 Annual Radiological Environmental Operating Report Attachment 3 Page 5 of 8 Table 20: Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Ratio of TBE to Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value<*) Analytics Result Value September 2018 E12271 Milk Sr-89 pCi/L 79.4 81.7 0.97 A Sr-90 pCi/L 12.2 14.8 0.82 A E12272 Milk Ce-141 pCi/L 152 128 1.19 A Co-58 pCi/L 161 144 1.12 A Co-60 pCi/L 208 190 1.10 A Cr-51 pCi/L 244 265 0.92 A Cs-134 pCi/L 124 123 1.01 A Cs-137 pCi/L 166 147 1.13 A Fe-59 pCi/L 158 119 1.32 N<1>

1-131 pCi/L 83.1 58.2 1.43 Nez>

Mn-54 pCi/L 191 167 1.14 A Zn-65 pCi/L 229 201 1.14 A E12273 Charcoal 1-131 pCi 83.0 80.7 1.03 A E12274 AP Ce-141 pCi 101 85.6 1.18 A Co-58 pCi 92.7 96.0 0.97 A Co-60 pCi 142 127 1.12 A Cr-51 pCi 218 177 1.23 w Cs-134 pCi 81.2 81.9 0.99 A Cs-137 pCi 99.0 98.5 1.01 A Fe-59 pCi 93.7 79.7 1.18 A Mn-54 pCi 116 112 1.04 A Zn-65 pCi 139 134 1.04 A E12302 Water Fe-55 pCi/L 2120 1820 1.17 A E12276 Soil Ce-141 pCi/g 0.259 0.221 1.17 A Co-58 pCi/g 0.279 0.248 1.12 A Co-60 pCi/g 0.367 0.328 1.12 A Cr-51 pCi/g 0.597 0.457 1.31 N (3)

Cs-134 pCi/g 0.261 0.212 1.23 w Cs-137 pCi/g 0.376 0.330 1.14 A Fe-59 pCi/g 0.248 0.206 1.20 A Mn-54 pCi/g 0.317 0.289 1.10 A Zn-65 pCi/g 0.407, 0.347 1.17 A (a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A= Acceptable-reported result falls within ratio limits of0.80-1.20 W= Acceptable with warning-reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< 0. 70 and > 1. 30 (1) See NCR 18-20 (2) See NCR 18-24 (3) See NCR 18-21 (Page 3 of 6)

Plant: River Bend Station Year: 2018 Page 43 of 45 Annual Radiological Environmental Operating Report Attachment 3 Page 6 of 8 Table 20: Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Ratio of TBE to Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value<*> Analytics Result Value December 2018 E12313 Milk Sr-89 pCi/L 71.9 91.9 0.78 w Sr-90 pCi/L 12.1 13.3 0.91 A E12314 Milk Ce-141 pCi/L 124 133 0.93 A Co-58 pCi/L 110 119 0.93 A Co-60 pCi/L 202 212 0.95 A Cr-51 pCi/L 292 298 . 0.98 A Cs-134 pCi/L 146 171 0.85 A Cs-137 pCi/L 118 121 0.98 A Fe-59 pCi/L 120 114 1.05 A 1-131 pCi/L 94.2 93.3 1.01 A Mn-54 pCi/L 151 154 0.98 A Zn-65 pCi/L 266 264 1.01 A E12315 Charcoal 1-131 pCi 94.8 89.9 1.05 A E12316A AP Ce-141 pCi 92.3 94.0 0.98 A Co-58 pCi 73.4 83.8 0.88 A Co-60 pCi 137 150 0.91 A Cr-51 pCi 202 210 0.96 A Cs-134 pCi 115 121 0.95 A Cs-137 pCi 85.0 85.4 1.00 A Fe-59 pCi 83.1 80.8 1.03 A Mn-54 pCi 104 109 0.96 A Zn-65 pCi 168 187 0.90 A E12317 Water Fe-55 pCi/L 2110 1840 1.15 A E12318 AP Sr-89 pCi 81.1 83.0 0.98 A Sr-90 pCi 11.4 12.0 0.95 A

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(a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation *

(b) Analytics evaluation based on TBE internal QC limits:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within o. 70-0. 80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< 0. 70 and> 1.30 (Page 4 of 6)

Plant: River Bend Station Year: 2018 Page 44 of 45 Annual Radiological Environmental Operating Report Attachment 3 Page 7 of 8 Table 21: DOE's Mixed Analyte Performan~e Evaluation Program (MAPEP)

Teledyne Brown Engineering Environmental Services TSE Identification Known Acceptance Month/Year Matrix Nuclide Units Reported Evaluation (b)

Number Value<*> Range Value February 2018 18-MaS38 Soil Ni-63 Sq/kg 9.94 (1) A Sr-90 Sq/kg 0.846 (1) A 18-MaW38 Water Am-241 Sq/L 0.785 0.709 0.496 - 0.922 A Ni-63 Sq/L 12.6 14.0 9.8-18.2 A Pu-238 Sq/L 0.0214 0.023 (2) A Pu-239/240 Sq/L 0.544 0.600 0.420.- 0.780 A 18-RdF38 AP U-234/233 Sq/sample 0.111 0.124 0.087 - 0.161 A U-238 Sq/sample 0.123 0.128 0.090 - 0.166 A 18-RdV38 Vegetation Cs-134 Sq/sample 2.46 3.23 2.26 - 4.20 w Cs-137 Sq/sample 3.14 3.67 2.57 -4.77 A Co-57 Sq/sample 4.12 4.42 3.09 - 5.75 A Co-60 Sq/sample 1.86 2.29 1.60 - 2.98 A Mn-54 Sq/sample 2.21 2.66 1.86 - 3.46 A Sr-90 Sq/sample NR<3>

Zn-65 Sq/sample -0.201 (1) A November 2018 18-MaS39 Soil Ni-63 Sq/kg 703 765 536 - 995 A Sr-90 Sq/kg 137 193 135 - 251 w 18-MaW39 Water Am-241 Sq/L 0.0363 (1) A Ni-63 Sq/L 6.18 7.0 4.9- 9.1 A Pu-238 Sq/L 0.73 0.674 0.472 - 0.876 A Pu-239/240 Sq/L 0.89 0.928 0.650 - 1.206 A 18-RdF39 AP U-234/233 Sq/sample 0.159 0.152 0.106 - 0.198 A U-238 Sq/sample 0.162 0.158 0.111 -0.205 A 18-RdV39 Vegetation Cs-134 Sq/sample 1.85 1.94 1.36 - 2.52 A Cs-137 Sq/sample 2.5 2.36 1.65 - 3.07 A Co-57 Sq/sample 3.53 3.31 2.32 - 4.30 A Co-60 Sq/sample 1.6 1.68 1.18-2.18 A Mn-54 Sq/sample 2.61 2.53 1.77 - 3.29 A Sr-90 Sq/sample 0.338 0.791 0.554 - 1.028 NC4)

Zn-65 Sq/sample 1.32 1.37 0.96 - 1. 78 A (a) The MAPEP known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) DOEIMAPEP evaluation:

A= Acceptable - reported result falls within ratio limits of0.80-1.20 W = Acceptable with warning - reported result falls within 0. 70-0. 80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< 0. 70 and> 1.30 NR = No result reported (1) False positive test (2) Sensitivity evaluation (3) See NCR 18-09 (4) See NCR 18-25 (Page 5 of 6)

Plant: River Bend Station Year: 2018 Page 45 of45 Annual Radiological Environmental Operating Report Attachment 3 Page 8 of 8

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Table 22: ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Acceptance Month/Year Matrix Nuclide Units Reported Evaluation (bl Number Value<*> Limits Value March 2018 MRAD-28 AP GR-A pCi/sample 65.7 43.4 22.7 - 71.5 A GR-B pCi/sample 57.2 52 31.5 - 78.6 A April 2018 RAD-113 Water Ba-133 pCi/L 91.2 91.5 77.1-101 A Cs-134 pCi/L 70.4 75.9 62.0- 83.5 A Cs-137 pCi/L 122 123 111 - 138 A Co-60 pCi/L 64.8 64.3 57.9- 73.2 A Zn-65 pCi/L 98.6 86.7 78.0 - 104 A GR-A pCi/L 32.8 28.6 14.6 - 37.5 A GR-B pCi/L 62.9 73.7 51.4-81.1 A U-Nat pCi/L 6.7 6.93 5.28- 8.13 A H-3 pCi/L 17100 17200 15000 - 18900 A Sr-89 pCi/L 38.6 48.8 38.3- 56.2 A Sr-90 pCi/L 27.1 26.5 19.2 - 30.9 A 1-131 pCi/L 26.7 24.6 20.4 - 29.1 A September 2018 MRAD-29 AP GR-A pCi/sample 49.7 55.3 28.9-91.1 A AP GR-B pCi/sample 75.3 86.5 52.4- 131 A October 2018 RAD-115 Water Ba-133 pCi/L 15.2 16.3 11.9 - 19.4 A Cs-134 pCi/L 85.9 93.0 76.4- 102 A Cs-137 pCi/L 229 235 212 - 260 A Co-60 pCi/L 81.9 80.7 72.6 - 91.1 A Zn-65 pCi/L 348 336 302 -392 A GR-A pCi/L 38.9 60.7 31.8 - 75.4 A GR-B pCi/L 36.5 41.8 27.9-49.2 A U-Nat pCi/L 17.48 20.9 16.8 - 23.4 A H-3 pCi/L 2790 2870 2410 - 3170 A 1-131 pCi/L 26.9 27.2 22.6-32.0 A Sr-89 pCi/L 57.2 56.9 45.5-64.6 A Sr-90 pCi/L 36.8 31.4 22.9- 36.4 Nc1>

(a) The ERA known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.

(b) ERA evaluation:

A = Acceptable - Reported value falls within the Acceptance Limits N = Not Acceptable - Reported value falls outside of the Acceptance Limits (1) See NCR 18-23 (Page 6 of 6)

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