ML19126A088

Annual Radiological Environmental Operating Report 2018

ML19126A088
Person / Time
Site:	Oyster Creek
Issue date:	04/30/2019
From:	Exelon Generation Co, Teledyne Brown Engineering Environmental Services
To:	Office of Nuclear Reactor Regulation
References
RA-19-022
Download: ML19126A088 (130)

Text

Docket No:

50-219

_OYSTER CREEK GENERATING STATION UNIT 1 Annual Radiological Environmental Operating Report 1 January through 31 December 2018 Prepared By Teledyne Brown Engineering Environmental Services Oyster Creek Generating Station Forked River, NJ 08731 April 2019

Intentionally left blank

Table of Contents Preface........................................................... :..................................................................... 1 I. Summary and Conclusions........................................................................................... 12 II. Introduction................................................................................................................... 14 A. Objectives of the REMP.................................................................................... 14

8. Implementation of the Objectives...................................................................... 14 C. Discussion......................................................................................................... 15 Ill. Program Description.................................................................................................... 18 A. Sample Collection............................................................................................. 18

8. Sample Analysis................................................................................................ 2°0 C. Data Interpretation......................................................................................'...... 20 D. Program Exceptions.......................................................................................... 22 E. Program Changes............................................................................................. 24 IV. Results and Discussion............................................................................................... 25 A. Aquatic Environment......................................................................................... 25

8. Atmospheric Environment................................................................................. 30 C. Ambient Gamma Radiation............................................................................... 34 D. Land Use Survey............................................................................................... 34 E. Summary of Results - Inter-laboratory Comparison Program.......................... 35 V. References................................................................................................................... 38 VI. Errata........................................................................................................................... 39

Appendix A Tables Table A-1 Appendix B Tables Table B-1 Table B-2 Table B-3 Figures Figure B-1 Figure B-2 Figure B-3 Appendix C Tables Table C-1.1 Table C-1.2 Table C-11.1 Table C-11.2 Appendices Radiological Environmental Monitoring Report Summary Radiological Environmental Monitoring Program Annual Summary for the Oyster Creek Generating Station, 2018 Location Designation, Distance & Direction, and Sample Collection &

Analytical Methods Location Designation and Identification System for the Oyster Creek Generating Station Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Oyster Creek Generating Station, 2018 Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Oyster Creek Generating Station, 2018 Locations of REMP Stations within a 1-mile radius of the Oyster Creek Generating Station Locations of REMP Stations within a 1 to 5-mile radius of the Oyster Creek Generating Station Locations of REMP Stations greater than 5 miles from the Oyster Creek Generating Station Data Tables and Figures - Primary Laboratory Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Tritium in Drinking Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Gross Beta in Drinking Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 ii

Table C-11.3 Concentrations of 1-131 in Drinking Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-11.4 Concentrations of Gamma Emitters in Drinking Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-111.1 Concentrations of Tritium in Groundwater Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-111.2 Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-IV.1 Concentrations of Gamma Emitters in Predator and Bottom Feeder (Fish) Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-IV.2 Concentrations of Gamma Emitters in Clam and Crab Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-V.1 Concentrations of Gamma Emitters in Sediment Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-Vl.1 Concentrations of Gross Beta in Air Particulate Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-Vl.2 Monthly and Yearly Mean Values of Gross Beta Concentrations in Air Particulate Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-Vl.3 Concentrations of Strontium in Air Particulate Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-Vl.4 Concentrations of Gamma Emitters in Air Particulate Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-Vll.1 Concentrations of 1-131 in Air Iodine Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-Vlll.1 Concentrations of Strontium and Gamma Emitters in Vegetation Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Table C-IX.1 Quarterly OSLO Results for Oyster Creek Generating Station, 2018 Table C-IX.2 Mean Quarterly OSLO Results for the Site Boundary, Intermediate, Special Interest, and Control Locations for Oyster Creek Generating Station, 2018 Table C-IX.3 Summary of the Ambient Dosimetry Program for Oyster Creek Generating Station, 2018 Figures Figure C-1 Mean Cobalt-60 Concentration in Clams Oyster Creek Generating Station, 1983 - 2018 iii

Figure C-2 Figure C-3 Figure C-4 Figure C-5 Figure C-6 Figure C-7 Appendix D Tables Table D-1.1 Table D-1.2 Table D-11.1 Table D-11.2 Table D-11.3 Table D-111.1 Table D-111.2 Table D-IV.1 Table D-V.1 Table D-VI.1 Mean Cobalt-60 Concentration in Aquatic Sediment Oyster Creek Generating Station, 1984 -2018 Mean Cesium-137 Concentration in Aquatic Sediment Oyster Creek Generating Station, 1984 - 2018 Mean Weekly Gross Beta Concentrations in Air Particulates Oyster Creek Generating Station, 2008 - 2018 Mean Monthly Gross Beta Concentrations in Air Particulates Oyster Creek Generating Station, 1984 - 2018 Mean Quarterly OSLO Gamma Dose Oyster Creek Generating Station, 2018 Mean Quarterly TLD/OSLD Gamma Dose Oyster Creek Generating Station, 1990 - 2018 Data Tables - QC Laboratory Concentrations of Tritium in Surface Water Samples Collected in the Vicinity Of Oyster Creek Generating Station, 2018 Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Tritium in Drinking Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of 1-131 in Drinking Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Gamma Emitters in Drinking Water Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Tritium in Groundwater Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Gamma Emitters in Clam Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Gamma Emitters in Sediment Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 Concentrations of Strontium and Gamma Emitters in Vegetation Samples Collected in the Vicinity of Oyster Creek Generating Station, 2018 iv

Appendix E Tables Table E-1 Table E-2 Table E-3 Table E-4 Table E-5 Table E-6 Appendix F Appendix G Inter-Laboratory Comparison Program Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2018 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering, 2018 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2018 ERA MRAD Statistical Summary Proficiency Testing Program Environmental, Inc., 2018 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering, 2018 ERA RAD Statistical Summary Proficiency Testing Program Environmental, Inc., 2018 Errata Data Annual Radiological Groundwater Protection Program Report (ARGPPR)

V

Preface The nuclear power industry uses terms and concepts that may be unfamiliar to all readers of this report. This section of the report is intended to help the reader better understand some of these terms and concepts. In this section, we will discuss radiation and exposure pathways. This section is intended only to give a basic understanding of these subjects to hopefully allow the reader to better understand the data provided within the report.

Every nuclear power station is required to submit two reports annually, the Annual Radioactive Effluents Release Report (ARERR) and the Annual Radiological Environmental Operating Report (AREOR). The following information is provided in both reports for Oyster Creek Generating Station.

Understanding Radiation Radiation is simply defined as the process of emitting radiant energy in the form of waves or particles. Radiation can be categorized as ionizing or non-ionizing radiation.

If the radiation has enough energy to displace electrons from an atom it is termed ionizing radiation. Typically you will see a warning sign where there is a potential to be exposed to man-made ionizing radiation. These signs normally have the trefoil symbol on a yellow background.

l.mU.w3il RADIOACTIVE 6 MATERIALS 6 Example Radiological warning signs People do not always recognize non-ionizing radiation as a form of radiation, such as light, heat given off from a stove, radiowaves and microwaves. In our report we focus on the ionizing radiation that is produced at a nuclear power plant though it is important to note that ionizing radiation comes from many sources. In fact, the amount of ionizing 1

radiation an average person is exposed to due to operation of a nuclear power plant is a very small fraction of the total ionizing radiation they will be exposed to in their lifetime and will be discussed later.

From this point forward we will only be discussing ionizing radiation but we will just use the term radiation.

Since this report discusses radiation in different forms and different pathways we first need to understand where the radiation comes from that we report. Radiation comes from atoms. So, what are atoms and how does radiation come from atoms?

You may have seen a Periodic Table of the Elements Group-+l 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 1 Period The Periodic Table of the Elements 1

2 3

4 5

6 7

Lanthanides Actinides I H 2

e I rnrioJ UJ~

flnrial L9.J~

r35lr361 L_!l:J~

~~

mll861

~~

1ml rri4l [ITS] rrnl [IT7] fIT8l

~L!!J~~~l.Qru This table lists all the elements found on earth. An atom is the smallest part of an element that maintains the characteristics of that element. An atom is made up of three parts, protons, neutrons and electrons.

2

Electron The number of protons in an atom determines the element. A hydrogen atom will always have one proton while an oxygen atom will always have eight protons. The protons are clustered with the neutrons at the center of the atom and this is called the nucleus. Orbiting around the nucleus are the relatively small electrons. Neutrons do not have an electrical charge, protons have a positive charge while electrons have a negative charge. In an electrically neutral atom, the negative and positive charges are balanced. Atoms of the same element that have a different number of neutrons in their nucleus are called isotopes.

Isotopes are atoms that have the same number of protons but different number of neutrons. They all have the same chemical properties and many isotopes are nonradioactive or stable while other isotopes may be unstable and are radioactive.

Radioactive isotopes can be called a radionuclide, a radioisotope or simply called a radioactive atom. A radionuclide usually contains an excess amount of energy in the nucleus usually due to a deficit or excess of neutrons in the nucleus.

There are two basic ways radionuclides are produced at a nuclear power plant. The first way is a direct result of the fission process and the radionuclides created through this process are termed fission products. Fission occurs when a very large atom, such as U-235 (Uranium-235) and Pu-239 (Plutonium-239), absorbs a neutron into its nucleus making the atom unstable. In this instance the atom can actually split into smaller atoms, this splitting of the atom is called fission. When fission occurs there is also a large amount of energy released from the atom in the form of heat which is what is used to produce the steam that will spin the turbines to produce electricity at a nuclear power plant.

3

The second way a radionuclide is produced at a nuclear power plant is through a process called activation and the radionuclides produced in this method are termed activation products. Water passes through the core where the fission process is occurring. This water is used to both produce the steam to turn the turbines and to cool the reactor. Though the water passing through the core is considered to be very pure water, there is always some other material within the water. This material typically comes from the material used in the plant's construction. As the water passes through the core, the material is exposed to the fission process and the radiation within the core can react with the material causing it to become unstable, creating a radionuclide. The atoms in the water itself can become activated and create radionuclides.

Over time, radioactive atoms will reach a stable state and no longer be radioactive. To do this they must release the excess energy. The release of excess energy can be in different forms and is called radioactive decay and the energy released is called radiation. The time it takes for a radionuclide to become stable is measured in units called half-lives. A half-life is the amount of time it takes for half of the original radioactivity to decay. Each radionuclide has a specific half-life. Some half-lives can be very long and are measured in years while others may be very short and are measured in seconds.

1000 800 Activity 600 400 200 0

1 half-life Half-life 2 half-lives 4

The amount of time it takes for half of the original radioactivity to decay 3 half-lives 4 half-lives

In this report, you will see radionuclides listed such as K-40 (potassium-40) and Co-60 (cobalt-60). The letter(s) represents the element and the number represents the specific isotope of that element and is the number of neutrons in the nucleus of that radionuclide. You may hear the term naturally occurring radionuclide which refers to radionuclides that naturally occur in nature such as K-40. There are man-made radionuclides such as Co-60 that we are concerned with since these man-made radionuclides result as a by-product when generating electricity at a nuclear power plant. There are other ways man-made radionuclides are produced, such as detonating nuclear weapons, and this is important to note since nuclear weapons testing deposited these man-made radionuclides into the environment and some are still present today.

There is a discussion in the AREOR for the radionculides Cs-137, Sr-89 and Sr-90.

The reason we only see some of the radionuclides today is due to the fact that some of the radionuclides released into the environment had relatively short half-lives and all the atoms have decayed to a stable state while other radionuclides have relatively long half-lives and will be measurable in the environment for years to come.

5

Sources of Radiation People are exposed to radiation every day of their lives and have been since the dawn of mankind. Some of this radiation is naturally occurring while some is man-made.

There are many factors that will determine the amount of radiation an individual will be exposed to such as where you live, medical treatments, etc. Below are examples of some of the typical sources of radiation an individual is exposed to in a year.

Sources of Radiation Exposure in the U.S.

Terrestrial (Soil) - 3%

Internal - 5%

Industrial and Ocou pational

<0.1%

r---...a~"IIC:::::::=::::f Consumer - 2%

[:=J Natural Sources

• 50%

... 310 millir-em (0.31 rem)

Source: NCRP Report No. 160 (20091 Nuclear Medicine 12%

Manmade Sources - 50%

-310 millirem (0.31 rem)

Full report is available on the NCRPweb1ite atwww.NCRPonline.org Adapted with permission of the National Council on Radiation Protection and Measurements, http://NCRPonline.org As you can see from the graph, the largest natural source of radiation is due to Radon.

That is because essentially all air contains Radon. Cosmic and Internal make up the next largest natural sources of radiation. Cosmic radiation comes from the sun and stars and there are multiple factors which can impact the amount of cosmic radiation you are exposed to such as the elevation at which you live and the amount of air travel you take a year. The internal natural source of radiation mainly comes from two sources. Technically, all organic material is slightly radioactive due to C-14 (Carbon-14), including humans and the food we eat. C-14 makes up a percentage of the carbon in all organic material. Another contributor to the internal natural source is K-40 (Potassium-40). Potassium is present in many of the foods we eat, such as brazil nuts, bananas, carrots and red meat. The smallest natural source listed is terrestrial. Soil and rocks contain radioactive materials such as Radium and Uranium. The amount of terrestrial radiation you are exposed to depends on where you live. The map below shows terrestrial exposure levels across the United States. The radiation released from 6

nuclear power plants is included in the Industrial and Occupational slice and is listed as

<0.1%.

Terrestrial Gamma-Ray Exposu,re at 1m above ground 2.5 11R/hr Exposure Pathways Source o' data.: U.S. Geological Survav Digital Data Series DOS-8, 1993 Radiological exposure pathways define the methods by which people may become exposed to radioactive material. The major pathways of concern are those which could cause the highest calculated radiation dose. These projected pathways are determined from the type and amount of radioactive material released into the environment and how the environment is used. The way radioactive material is transported in the environment includes consideration of physical factors, such as the hydrological (water) and meteorological (weather) characteristics of the area. An annual average of the water flow, wind speed, and wind direction are used to evaluate how the radionuclides will be distributed in an area for gaseous or liquid releases. An important factor in evaluating the exposure pathways is the use of the environment. Many factors are considered such as dietary intake of residents, recreational use of the area, and the locations of homes and farms in the area.

The external and internal exposure pathways considered are shown in Figure 2.1. The release of radioactive gaseous effluents involves pathways such as external whole-body exposure, deposition of radioactive material on plants, deposition on soil, 7

inhalation by animals destined for human consumption, and inhalation by humans.

The release of radioactive material in liquid effluents involves pathways such as drinking water, fish, and direct exposure from the water at the shoreline while swimming.

Although radionuclides can reach humans by many different pathways, some result in more dose than others. The critical pathway is the exposure route that will provide, for a specific radionuclide, the greatest dose to a population, or to a specific group of the population called the critical group. The critical group may vary depending on the radionuclides involved, the age and diet of the group, or other cultural factors. The dose may be delivered to the whole body or to a specific organ. The organ receiving the greatest fraction of the dose is called the critical organ.

Figure 2.1 External and Internal Exposure Pathways Depostionto Grocnd Drinkire Scrtace Water or Groun-This simple diagram demonstrates some potential exposure pathways from Oyster Creek Generating Station.

8

Radiation Risk U.S. radiation protection standards are based on the premise that any radiation exposure carries some risk. There is a risk whether the radiation exposure is due to man-made sources or natural sources. There have been many studies performed trying to determine the level of risk. The following graph is an example of one study that tries to relate risk from many different factors. This graph represents risk as "Days of Lost Life Expectancy." All the categories are averaged over the entire population except Male Smokers, Female Smokers and individuals that are overweight. Those risks are only for people that fall into those categories. The category for Nuclear Power is a government estimate based on all radioactivity releases from nuclear power, including accidents and wastes.

Smoking - Male Heart Disease Smoking - Female Cancer Every 10 I bs overweight Stroke Motor Vehicle Accident Air Pollution Radon I

Chemical Residue in Foods I Drowning I Hurricanes and Tornadoes Lightning Nuclear Power 0

Hurricanes and Tornadoes Lightning Nuclear Power I 0

0.2 Days of Lost Life Expectancy 500 1000 1500 2000 2500 3000 Days of Lost Life Expectancy 0.4 0.6 0.8 1.2 1.4 1.6 1.8 9

Adapted from the article by Bernard L. Cohen, Ph.D. in the Journal of American Physicians and Surgeons Volume 8 Number 2 Summer 2003.

The full article can be found at http://www.jpands.org/vol8no2/cohen.pdf Annual Reports All nuclear power plants are required to perform sampling of both the potential release paths from the plant and the potential exposure pathways in the environment. The results of this sampling are required to be reported annually to the Nuclear Regulatory Commission (NRC) and made available to the public. There are two reports generated annually, the Annual Radioactive Effluents Release Report (ARERR) and the Annual Radiological Environmental Operating Report (AREOR). The ARERR summarizes all of the effluents released from the plant and quantifies the doses to the public from these effluents. The AREOR summarizes the results of the samples obtained in the environment looking at all the potential exposure pathways by sampling different media such as air, vegetation, direct radiation, etc. These two reports are related in that the results should be aligned. The AREOR should validate that the effluent program is accurate. The ARERR and AREOR together ensure Nuclear Power Plants are operating in a manner that adequately protects the public.

In the reports, there are four different but interrelated units for measuring radioactivity, exposure, absorbed dose, and dose equivalent. Together, they are used to properly capture both the amount of radiation and its effects on humans.

Radioactivity refers to the amount of ionizing radiation released by a material.

The units of measure for radioactivity used within the AREOR and ARERR are the curie (Ci). Small fractions of the Ci often have a prefix, such as µCi that means 1/1,000,000. That means there are 1,000,000 µCi in one Ci.

Exposure describes the amount of radiation traveling through the air. The units of measure for exposure used within the AREOR and ARERR are the roentgen (R). Traditionally direct radiation monitors placed around the site are measured in milliroentgen (mR}, 1/1,000 of one R.

fj Absorbed dose describes the amount of radiation absorbed by an object or person. The units of measure for absorbed dose used within the AREOR and ARERR are the rad. Noble gas air doses are reported by the site are measured in millirad (mrad), 1 /1,000 of one rad.

Dose equivalent (or effective dose) combines the amount of radiation absorbed and the health effects of that type of radiation. The units used within the AREOR and ARERR are the roentgen equivalent man (rem). Regulations require doses 10

to the whole body, specific organ, and direct radiation to be reported in millirem (mrem), 1/1,000 of one rem.

Typically releases from nuclear power plants are so low that the samples taken in the environment are below the detection levels required to be met by all nuclear power plants. There are some radionuclides identified in the environment during the routine sampling but this is typically background radiation from nuclear weapons testing and events such as Chernobyl and these radionuclides are discussed in the AREOR.

Each report lists the types of samples that are collected and the analyses performed.

Different types of media may be used at one sample location looking for specific radionuclides. For example, at our gaseous effluent release points we use different media to collect samples for particulates, iodines, noble gases and tritium. There are also examples where a sample collected on one media is analyzed differently depending on the radionuclide for which the sample is being analyzed.

These annual reports, and much more information related to nuclear power, are available on the NRC website at www.nrc.gov.

11

I.

Summary and Conclusions This report on the Radiological Environmental Monitoring Program (REMP) conducted for the Oyster Creek Generating Station (OCGS) by Exelon Nuclear covers the period 01 January 2018 through 31 December 2018. During that time period, a total of 1,694 analyses were performed on 1,269 samples. In assessing all the data gathered for this report and comparing these results with historical data, it was concluded that the operation of OCGS had no adverse radiological impact on the environment.

REMP-designated surface water samples were analyzed for concentrations of tritium and gamma-emitting nuclides. No tritium, fission or activation products were detected in any of the surface water samples collected as part of the Radiological Environmental Monitoring Program during 2018.

REMP designated drinking water samples were analyzed for concentrations of gross beta, tritium, lodine-131 (1-131), and gamma-emitting nuclides. The preoperational environmental monitoring program did not include analysis of drinking water for gross beta. No tritium, 1-131, or fission or activation products were detected in any of the drinking water samples collected.

REMP-designated groundwater samples were analyzed for concentrations of tritium and gamma-emitting nuclides. No tritium and no fission or activation products were detected in REMP groundwater samples.

Fish (predator and bottom feeder), clams, crabs, and sediment samples were analyzed for concentrations of gamma-emitting nuclides. No OCGS-produced fission or activation products were detected in fish, clams, or crabs. Cesium-137 (Cs-137) was not detected in any sediment samples.

Air particulate samples were analyzed for concentrations of gross beta, gamma-emitting nuclides, Strontium-89 (Sr-89), and Strontium-90 (Sr-90). Gross beta and cosmogenic Beryllium-? (Be-7) were detected at levels consistent with those detected in previous years. No fission or activation products were detected.

Sr-89 and Sr-90 analyses were performed on quarterly composites of air particulate samples. All Sr-89 and Sr-90 results were below the minimum detectable activity.

lodine-131 (1-131) analyses were performed on weekly air samples. All results were less than the minimum detectable concentration.

Vegetation samples were analyzed for gamma-emitting nuclides, Sr-89, and Sr-90. Concentrations of naturally-occurring Potassium-40 (K-40) were consistent with those detected in previous years. No fission or activation products were detected. All Sr-89 results were below the minimum detectable activity. Sr-90 activity was at levels consistent with those detected in previous years at both control and indicator stations, and can be attributed to historical nuclear weapons testing and the Chernobyl accident.

12

Environmental gamma radiation measurements were performed quarterly using Optically Stimulated Luminescence Dosimeters (OSLO). Beginning in calendar year 2012, Exelon began using OSLDs and discontinued the use of Thermoluminescent Dosimetry (TLD). There were two main reasons for this change. First, OSLDs have minimal "fade" over a quarterly time period. Fade is where the dose on the dosimeter drifts lower over time. Second, OSLDs may be re-read if necessary. TLDs are reset to zero after they are read. Levels detected were consistent with those observed in previous years. The maximum dose to any member of the public attributable to radioactive effluents and direct radiation from the OCGS was less than the 25 mRem/year limit established by the United States Environmental Protection Agency (EPA).

13

II.

Introduction The Oyster Creek Generating Station (OCGS), consisting of one boiling water reactor owned and operated by Exelon, is located on the Atlantic Coastal Plain Physiographic Province in Ocean County, New Jersey, about 60 miles south of Newark, 9 miles south of Toms River, and 35 miles north of Atlantic City. It lies approximately 2 miles inland from the Barnegat Bay. The property, covering approximately 781 acres, is situated partly in Lacey Township and, to a lesser extent, in Ocean Township. Access is provided by U.S. Route 9, passing through the -150 acre site and separating a 637-acre eastern portion from the balance of the property west of the highway. The station is about "X mile west of the highway and 1 "X miles east of the Garden State Parkway. The site property extends about 2~ miles inland from the bay; the maximum width in the north-south direction is almost 1 mile. The site location is part of the New Jersey shore area with its relatively flat topography and extensive freshwater and saltwater marshlands. The South Branch of Forked River runs across the northern side of the site and Oyster Creek partly borders the southern side.

A preoperational Radiological Environmental Monitoring Program (REMP) for OCGS was established in 1966, and continued prior to the plant becoming operational in 1969. This report covers those analyses performed by Teledyne Brown Engineering (TBE), Landauer and Environmental Inc. (Midwest Labs) on samples collected during the period 01 January 2018 through 31 December 2018.

A.

Objectives of the REMP The objectives of the REMP are to:

1.

Determine whether any significant increase occurs in the concentration of radionuclides in major pathways

2.

Identify and evaluate the buildup, if any, of radionuclides in the local environment, or any changes in normal background radiation levels

3.

Verify the adequacy of the plant's controls for the release of radioactive materials

4.

Fulfill the obligations of the radiological surveillance sections of Oyster Creek's Offsite Dose Calculation Manual (ODCM)

B.

Implementation of the Objectives The implementation of the objectives is accomplished by:

14

1.

Identifying significant exposure pathways

2.

Establishing baseline radiological data for media within those pathways

3.

Continuously monitoring those media before and during Station operation to assess Station radiological effects (if any) on man and the environment*

C.

Discussion

1.

General Program The Radiological Environmental Monitoring Program (REMP) was established in 1966, before the plant became operational. This preoperational surveillance program was established to describe and quantify the radioactivity, and its variability, in the area prior to the operation of OCGS. After OCGS became operational in 1969, the operational surveillance program continued to measure radiation and radioactivity in the surrounding areas.

A variety of environmental samples are collected as part of the REMP at OCGS. The selection of sample types is based on the established pathways for the transfer of radionuclides through the environment to humans. The selection of sampling locations is based on sample availability, local meteorological and hydrological characteristics, local population characteristics, and land usage in the area of interest. The selection of sampling frequencies for the various environmental media is based on the radionuclides of interest, their respective half-lives, and their behavior in both the biological and physical environment.

2.

Preoperational Surveillance Program The federal government requires nuclear facilities to conduct radiological environmental monitoring prior to constructing the facility. This preoperational surveillance program is aimed at collecting the data needed to identify pathways, including selection of the radioisotope and sample media combinations to be included in the environmental surveillance program conducted after facility operation begins. Radiochemical analyses performed on the environmental samples should include not only those nuclides expected to be released during facility operation, but should also include typical radionuclides from nuclear weapons testing and 15

natural background radioactivity. All environmental media with a potential to be affected by facility operation as well as those media directly in the major pathways, should be sampled on at least an annual basis during the preoperational phase of the environmental surveillance program.

The preoperational surveillance design, including nuclide/media combinations, sampling frequencies and locations, collection techniques, and radioanalyses performed, should be carefully considered and incorporated in the design of the operational surveillance program. In this manner, data can be compared in a variety of ways (for example, from year to year, location to location, etc.) in order to detect any radiological impact the facility has on the surrounding environment. Data collection during the preoperational phase should be planned to provide a comprehensive database for evaluating any future changes in the environment surrounding the nuclear facility.

OCGS began its preoperational environmental surveillance program three years before the plant began operating in 1969.

Data accumulated during those early years provide an extensive database from which environmental monitoring personnel are able to identify trends in the radiological characteristics of the local environment. The environmental surveillance program at OCGS will continue after the plant has reached the end of its economically useful life and decommissioning has begun.

3.

Consideration of Plant Effluents Effluents are strictly monitored to ensure that radioactivity released to the environment is as low as reasonably achievable and does not exceed regulatory limits. Effluent control includes the operation of monitoring systems, in-plant and environmental sampling and analyses programs, quality assurance programs for effluent and environmental programs, and procedures covering all aspects of effluent and environmental monitoring.

Both radiological environmental and effluent monitoring indicate that the operation of OCGS does not result in significant radiation exposure of the people or the environment surrounding OCGS and is well below the applicable levels set by the Nuclear Regulatory Commission (NRC) and the EPA.

There were liquid radioactive effluent releases during 2018 of concentrations of tritium too low to detect at an LLD of 200 16

picocuries per liter (pCi/L) at the New Jersey Pollution Discharge Elimination System (NJPDES) permitted main condenser outfall.

The releases were part of nearly continuous pumping of groundwater at approximately 60 gpm containing low levels of tritium and no detectable gamma. Exelon and the State of New Jersey Department of Environmental Protection (NJDEP) agreed to this remediation action instead of natural attenuation to address concentrations of tritium in groundwater. Well 73 and supporting equipment and piping were installed to pump groundwater to the intake structure at the inlet of the main circulating water pumps.

Provisions were established for both batch and continuous releases of groundwater. Well 73 was secured October 19 - 28, 2018, and secured again December 18 -29, 2018,which resulted in discharging 3.12E+07 gallons and 2.13E-01 Ci of tritium released to the discharge canal. The dose to the most limiting member of the public due to the release of groundwater was 1.23E-06 mRem.

Utilizing gaseous effluent data, the maximum hypothetical dose to any individual during 2018 was calculated using a mathematical model, which is based on the methods defined by the U.S. Nuclear Regulatory Commission. These methods accurately determine the types and quantities of radioactive materials being released to the environment.

The maximum calculated organ dose (Bone) from iodines, tritium, Carbon-14 (C-14), and particulates to any individual due to gaseous effluents was 2.58E-01 mRem, which was approximately 1. 72E+OO percent of the annual limit of 1.50E+01 mRem. The maximum calculated gamma air dose in the UNRESTRICTED AREA due to noble gas effluents was 9.12E-04 mrad, which was 9.12E-03 percent of the annual 10 CFR 50 Appendix I, As Low As Reasonably Achievable (ALARA) limit of 1.00E+01 mrad. The majority of organ dose from gaseous effluents was due to C-14. The maximum hypothetical calculated whole body dose to any individual due to noble gas effluents was 4.12E-04 mRem which was 8.24E-03 percent of the annual limit of 5.00E+OO mRem.

The total maximum organ dose (Bone) was 2.58E-01 mRem received by any individual from gaseous effluents from the Oyster Creek Generating Station for the reporting period.

During 2018, the maximum direct radiation dose to the most likely exposed MEMBER OF THE PUBLIC potentially attributable to the operation of Oyster Creek beyond the site boundary in the west sector, as shown by offsite OSLO readings at station 55 was 17

6.30E+OO mRem. This includes a shielding factor of 7.00E-01.

The nearest member of the public is considered a part-time resident that works 2,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> per year at a warehouse located west of the plant.

Environmental sampling of airborne iodine and particulates showed no radioactivity attributable to the operation of OCGS.

Ill.

Program Description A.

Sample Collection Samples for the OCGS REMP were collected for Exelon by on-site personnel and Normandeau Associates, Incorporated. This section describes the general collection methods used to obtain environmental samples for the OCGS REMP in 2018. Sample locations and descriptions can be found in Tables 8-1 and 8-2, and Figures 8-1, 8-2, and 8-3, Appendix 8. The collection procedures are listed in Table 8-3.

Aquatic Environment The aquatic environment was evaluated by performing radiological analyses on samples of surface water, drinking water, groundwater, fish, clams, crabs, and sediment. One gallon water samples were collected monthly from two surface locations (33 and 94), semiannually at two surface water locations (23 and 24), monthly from five drinking water wells (1N, 1S, 37, 38, and 114) and quarterly from 2 groundwater stations (MW-24-3A and W-3C). Control locations were 94 and 37. All samples were collected in plastic bottles, which were rinsed at least twice with source water prior to collection. Fish samples comprising the flesh of two groups, bottom feeder and predator, were collected semiannually at three locations (33, 93 and 94 (control)). Clams were collected semiannually from three locations (23, 24, and 94 [control]). Two annual crab samples were collected from two locations (33 and 93). Sediment samples were collected at four locations semiannually (23, 24, 33, and 94 [control]).

Atmospheric Environment The atmospheric environment was evaluated by performing radiological analyses on samples of air particulate and airborne iodine. Airborne iodine and particulate samples were collected and analyzed weekly at eight locations (C, 3, 20, 66, 71, 72, 73, and 111 ). The control location was C. Airborne iodine and particulate samples were obtained at each location, using a vacuum pump with charcoal and glass fiber filters attached. The pumps were run continuously-and sampled air at the rate 18

of approximately one cubic foot per minute. The filters were replaced weekly and sent to the laboratory for analysis.

Terrestrial Environment The terrestrial environment was evaluated by performing radiological analyses on samples of garden vegetation. No commercial dairy operations and no dairy animals producing milk for human consumption are located within a 5 mile radius of the plant. Therefore, vegetation samples were collected in lieu of milk. Vegetation samples were collected, when available, at four locations (35, 36, 66, and 115). Station 36 was the control location. All samples were collected in 18" x 24" new unused plastic bags and shipped promptly to the laboratory.

Ambient Gamma Radiation Direct radiation measurements were made using Al203:C Optically Stimulated Luminescence Dosimetry (OSLO). Exelon changed the dosimetry used for environmental monitoring. Beginning in calendar year 2012, Exelon began using OSLDs and discontinued the use of Thermoluminescent Dosimetry (TLD). There were two main reasons for this change. First, OSLDs are subject to minimal fade. Fade is where the dose on the dosimeter drifts lower over time. Second, OSLDs may be re-read if necessary. TLDs are reset to zero after they are read. The OSLDs were placed on and around the OCGS site and were categorized as follows:

An inner ring consisting of 19 locations (1, T1, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 66, 112, and 113) near the site boundary.

An outer ring consisting of 31 locations (4, 5, 6, 8, 9, 22, 46, 47, 48, 68, 73, 74, 75, 78, 79, 82, 84, 85, 86, 98, 99,100,101,102,103,104,105, 106, 107, 109, and 110) extending to approximately 5 miles from the site designed to measure possible exposures to close-in population.

Special interest stations consisting of 9 locations (3, 11, 71, 72, 81, 88, 89, 90, and 92) representing special interest areas such as population centers, state parks, etc.

Background (Control) stations consisting of two locations (C and 14) greater than 20 miles distant from the site.

Indicator OSLDs were placed systematically, with at least one station in each of 16 meteorological compass sectors in the general area of the site boundary. OSLDs were also placed in each meteorological sector in the 19

1 to 5 mile range, where reasonable highway access would permit, in areas of public interest and population centers. Background locations were located greater than twenty miles distant from the OCGS and generally in an upwind direction from the OCGS.

Two OSLDs were placed at each location approximately three to eight feet above ground level. The OSLDs were exchanged quarterly and sent to Landauer for analysis.

B.

Sample Analysis This section describes the general analytical methodologies used by TBE and Environmental Inc. (Midwest Labs) to analyze the environmental samples for radioactivity for the OCGS REMP in 2018. The analytical procedures used by the laboratories are listed in Table 8-3.

In order to achieve the stated objectives, the current program includes the following analyses:

1.

Concentrations of beta emitters in air particulates and drinking water

2.

Concentrations of gamma emitters in surface, drinking water, groundwater, fish, clams, crabs, sediment, air particulates and vegetation

3.

Concentrations of tritium in REMP-designated surface, drinking water and groundwater

4.

Concentrations.of 1-131 in air iodine cartridges and drinking water

5.

Concentrations of strontium in air particulates and vegetation

6.

Ambient gamma radiation levels at various locations around the OCGS C.

Data Interpretation For trending purposes, the radiological and direct radiation data collected during 2018 were compared with data from past years. The results of environmental sampling show that radioactivity levels have not increased from the background radioactivity detected prior to the operation of OCGS. The operation of OCGS continues to have no measurable radiological impact upon the environment.

20

Several factors were important in the interpretation of the data:

1.

Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) is defined as the smallest concentration of radioactive material in a sample that would yield a net count (above background) that would be detected with only a 5% probability of falsely concluding that a blank observation represents a "real" signal. The LLD is intended as a before the fact estimate of a system (including instrumentation, procedure and sample type) and not as an after the fact criterion for the presence of activity. All analyses were designed to achieve the required OCGS detection capabilities for environmental sample analysis.

2.

The minimum detectable concentration (MDC) is defined above with the exception that the measurement is an after the fact estimate of the presence of activity.

Net Activity Calculation and Reporting of Results Net activity for a sample was calculated by subtracting background activity from the sample activity. Since the REMP measures extremely small changes in radioactivity in the environment, background variations may result in sample activity being lower than the background activity, which results in a negative number.

An MDC was reported in all cases where positive activity was not detected.

Gamma spectroscopy results for each type of sample were grouped as follows:

For surface, drinking water, and groundwater-12 nuclides:

Mn-54, Co-58, Fe-59, Co-60, Zn-65, Zr-95, Nb-95, 1-131, Cs-134, Cs-137, Ba-140, and La-140 were reported For fish - eight nuclides: K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Cs-134, and Cs-137 were reported For clams - eight nuclides: K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Cs-134, and Cs-137 were reported For crabs - eight nuclides: K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Cs-134, and Cs-137 were reported For sediment-nine nuclides: Be-7, K-40, Mn-54, Co-58, Co-60, 21

Cs-134, Cs-137, Ra-226, and Th-228 were reported For air particulate - six nuclides: Be-7, Mn-54, Co-58, Co-60, Cs-134, and Cs-137 were reported For air iodine cartridges - one nuclide: 1-131 was reported For vegetation-seven nuclides: Be-7, K-40, 1-131, Cs-134, Cs-137, Ba-140, and La-140 were reported Means and standard deviations of the results were calculated. The standard deviations represent the variability of measured results for different samples rather than single analysis uncertainty.

D.

Program Exceptions For 2018, the OCGS REMP had a sample recovery rate in excess of 97%.

Exceptions are listed below:

Environmental Dosimetry

1. Second Quarter: Station 79 - One of the dosimeters was missing and could not be found in the surrounding area. It most likely blew out of the holder.

2. Third Quarter: Station 52 - Dosimeters were missing and could not be found in the surrounding area. They most likely blew out of the holder and the new ones were secured more tightly.

3. Fourth Quarter: Stations W2 & W3 - Both dosimeters were removed when a new fence was being put up around the kV yard.

New stations put in place on 10/31/18.

1. Week 1 (01/01/18-01/13/18): Stations 20 & 72-The GFI breaker tripped during the most recent snow storm and not enough sample volume was collected. The breaker was reset and station up and running.

2. Week 10 (03/04/18 - 03/10/18): Station 73 - The road was flooded to the sample station and no sample collected. The next week's sample will be a 2-week sample.

3. Week 11 (03/11 /18 - 03/17 /18): Station 73 - No sample collected because the breaker tripped and did not collect enough volume.

22

Breaker was reset.

4. Week 28 (07/08/18- 07/14/18): Station 66 - Pump was not running. The vanes inside the pump were changed out and it is back running.

5. Week 33 (08/12/18- 08/18/18): Station 72 - No sample collected because the intake tubing was disconnected for some reason. The tubing was reattached.

6. Week 49 (12/02/18 - 12/08/18): Station 20 - No sample collected due to no power at the station. Breaker to be replaced 12/11/18.

• 7. Week 50 (12/09/18 -12/15/18): Station 20 - No sample collected due to no power at the station. Breaker to be replaced 12/17/18.

8. Week 51 (12/16/18 - 12/22/18): Station 20 - No sample collected due to no power at the station. Fuse replaced on 12/17/18 and pump replaced on 12/19/18.

9. Week 52 (12/23/18-12/29/18): Station 20- No sample collected due to no power at the station.

Drinking Water Note:

Stations 1 S and 1 N are on-site drinking water wells. Typically, only one well is in service at a time. They are only listed as deviations when there is not a sample for every week of the composite period.

1. Week 35 (08/26/18 - 09/08/18) - Station 1 N did not collect enough sample for the month - only 1 gallon was collected.

2. Week 36 09/09/18 - 09/15/18) - Station 38 was out of service due to maintenance being done at the plant.

Surface Water

1. Weeks 1-52 (01/01/18-12/29/18): Station 1S was out of service for all of 2018 (no samples).

2. Week 36 09/09/18 - 09/15/18) - Station 1 N did not collect enough sample for the month - only 1 gallon was collected.

Vegetation 23

1. Week 30 (07 /22/18 - 07 /28/18): Station 52 - no samples taken because the plants were too small.

2. Week 35 (08/26/18- 09/01/18): Station 36 - only one species (cabbage) taken because the farm was temporarily out of collards and kale.

3. Week 37 (09/16/18 - 09/22/18): Stations 35 & 115 - only two species (collards & kale) collected. All cabbage was rotten due to seasonal rain.

4. Week 43 (10/21/18 - 10/27/18): Station 66 - only one species collected (cabbage) and Station 35 - only two species collected (collards & kale). Growing season is finished.

5. Week 46 (11/11/18 - 11/17/18): Station 66 - no plants available for collection and Station 35 - only 2 species (collards & kales) were available for collection.

Program exceptions are tracked and investigated to understand the causes of the program exception. Sampling and maintenance errors are reviewed with the personnel involved to prevent recurrence.

The overall sample recovery rate indicates that the appropriate procedures and equipment are in place to assure reliable program implementation.

E.

Program Changes There were no changes to the program in 2018.

24

IV.

Results and Discussion A.

Aquatic Environment

1.

Surface Water Samples were taken via grab sample methodology at two locations (33 and 94) on a monthly schedule. In addition, grab samples were collected semi-annually at two locations (23 and 24). Of these locations 23, 24, and 33, located downstream, could be affected by Oyster Creek's effluent releases. The following analyses were performed:

Tritium Surface water sampling began in 1966, and the samples were analyzed for tritium as well as other radioactivity. During this preoperational program, tritium was detected at an average concentration of 1.05E+03 pCi/L. At that time, counting instrumentation was not as sensitive as it now, and the minimum detectable concentration was 1.00E+03 pCi/L versus 2.00E+02 pCi/L used today. By comparing the 2018 sampling results to the decay corrected average preoperational concentration reported in the 2007 Annual Radiological Environmental Operating Report (1.11 E+02 pCi/L), it can be seen that the inventory of tritium in the environment is due to fallout from past atmospheric nuclear weapons testing, and is decreasing with time.

Samples from all locations were analyzed for tritium activity (Table C-1.1, Appendix C). No tritium activity was detected.

Gamma Spectrometry Samples from all locations were analyzed for gamma-emitting nuclides (Table C-1.2, Appendix C). All nuclides were less than the MDC.

2.

Drinking water Monthly samples were composited from monthly grab samples from six drinking water wells (1 N, 1 S, 37, 38, and 114). Station 1, because it is located on the OCGS site, could potentially be affected by radioactive releases from the plant. Station 1 was split into two separate locations, 1 N and 1 S. Station 38, the Ocean Township Municipal Utility Authority Well, could potentially be 25

affected by effluent releases from the OCGS. Given its distance from the facility (1.6 miles) and depth (approximately 360 feet),

however, the probability of any OCGS-related impacts is very small. Station 37, Lacey Township Municipal Utility Authority well, is not likely to be impacted by effluents from the OCGS. This well is located generally up-gradient of the regional groundwater flow direction (southeast). In addition, because of it's depth (> 200 feet) and distance from the site (2.2 miles), the well is unlikely to be affected by OCGS operations.

The following analyses were performed:

Tritium Monthly samples from all locations were analyzed for tritium activity (Table C-11.1, Appendix C). No tritium activity was detected.

Drinking water was sampled during the preoperational program and throughout the almost 50 years of the plant's operational program.

Tritium sampling results during the preoperational years, yielded results all less than the minimum detectable concentration of 1.00E+03 pCi/L. 2018 results are all less than the current MDC of 2.00E+02 pCi/L.

Gross Beta Monthly samples from all locations were analyzed for concentrations of total gross beta activity (Tables C-11.2, Appendix C). Gross beta was detected in 43 of 48 samples, and is expected due to natural sources and fallout residual from previous bomb testing. The values ranged from 1.80E+OO to 13.80E+OO pCi/L.

The investigation level for gross beta in water is 1.50E+01 pCi/l.

Drinking water sample 1 N result for gross beta exceeded the investigation level beginning in January 2012.

The initial result for gross beta was 1.51 E+01 pCi/L in 2012. This issue was entered into the Corrective Action Program (CAP) and an investigation initiated. The 1 N water sample was analyzed for known beta emitters Sr-89, Sr-90, lron-55 (Fe-55) and Nickel-63 (Ni-63). These analyses results were all <MDC. It was also identified that the 1 N well treatment system was upgraded the previous month and a potassium chloride softener system was added as part of the upgrade. Samples were obtained pre-and post-treatment. The pre-treatment result for gross beta was 26

3.60E+OO pCi/L, which is a value that has been seen previously in drinking water samples. The post-treatment sample result for gross beta was 2.22E+01 pCi/L.

Based on the fact that there were no typical plant-produced beta-emitters detected and that natural potassium is a known beta-emitter, along with the results of the pre-and post-sampling, the gross beta values obtained for 1 N can be attributed to the addition of the water softener system installed during the system upgrade in December of 2011.

Iodine Monthly samples from all locations were analyzed for 1-131 by the low level method to detect down to 1.00E+OO pCi/L (Table C-11.3, Appendix C). All results were less than the MDC.

Gamma Spectrometry Samples from all locations were analyzed for gamma-emitting nuclides (Table C-11.4, Appendix C). All nuclides were less than the MDC.

3.

Groundwater The following analyses were performed:

Tritium Samples from all locations were analyzed for tritium activity (Table C-111.1, Appendix C). No tritium activity was detected.

Gamma Spectrometry Samples from all locations were analyzed for gamma-emitting nuclides (Table C-111.2, Appendix C). All nuclides were less than the MDC.

4.

Fish Fish samples comprised of bottom feeder (American eel, winter flounder, tautaug, summer flounder) and predator (bluefish, striped bass, white perch) were collected at three locations (33, 93, and

94) semiannually. Locations 93 and 33 could be affected by Oyster Creek's effluent releases. The following analysis was performed:

27

Gamma Spectrometry The edible portions of fish samples from three locations were analyzed for gamma-emitting nuclides (Table C-IV.1, Appendix C).

Naturally-occurring K-40 was found at all stations and ranged from 2,475 to 4,301 pCi/kg wet and was consistent with levels detected in previous years. No fission or activation products were found.

No fish were sampled during the preoperational sampling program for OCGS.

5.

Clams and Crabs Clams were collected at three locations (23, 24, and 94) semiannually. Crabs were collected at two locations (33 and 93) annually. Locations 23, 24, 33, and 93 could be affected by Oyster Creek's effluent releases. The following analysis was performed:

Gamma Spectrometry The edible portions of clam samples from all three locations were analyzed for gamma-emitting nuclides (Table C-IV.2, Appendix C).

Naturally-occurring K-40 was found at all stations and ranged from 1,118 to 1,900 pCi/kg wet and was consistent with levels detected in previous years. No fission or activation products were found.

Historical levels of Co-60 in clams are shown in Figure C-1, Appendix C.

Preoperational clam sample results for naturally-occurring K-40 ranged from 600 to 9,800 pCi/kg wet, which are consistent with current sample results.

The edible portions of crab samples from 2 locations were analyzed for gamma-emitting nuclides (Table C-IV.2, Appendix C).

Naturally-occurring K-40 was found at both stations and ranged from 1,329 to 1,840 pCi/kg wet, consistent with levels detected in previou_s years. No fission or activation products were found.

Crabs were not sampled during the preoperational years of the OCGS environmental monitoring program.

6.

Sediment Aquatic sediment samples were collected at four locations (23, 24, 28

33, and 94) semiannually. Of these locations, stations 23, 24, and 33 located downstream, could be affected by Oyster Creek's effluent releases. The following analysis was performed:

Gamma Spectrometry Sediment samples from all four locations were analyzed for gamma-emitting nuclides (Table C-V.1, Appendix C). Naturally-occurring K-40 was found at all stations and ranged from 1,340 to 17,160 pCi/kg dry. Naturally-occurring Ra-226 was found at three locations with a concentration range of 905 to 1,458 pCi/kg dry.

Naturally-occurring Th-228 was found at all stations and ranged from 203 to 946 pCi/kg wet. Cs-137 was not detected in any of the samples. No fission or activation products were found. Figure C-3, Appendix C graphs show Cs-137 concentrations in sediment from 1984 through 2018 and figure C-2, Appendix C graphs show Co-60 concentrations in sediment from 1984 through 2018.

The requirement for sampling sediment is a requirement of ODCM 3.12.1, Table 3.12.1-1.d. ODCM Table 3.12.1-2, "Reporting Levels for Radioactive Concentrations in Environmental Samples Reporting Levels" does not include requirements for sediment.

CY-AA-170-1000, Radiological Environmental Monitoring Program and Meteorological Program Implementation, Attachment 1, Analytical Results Investigation Levels, includes sediment investigation level for Cs-137 of 1000E+OO pCi/kg dry.

While aquatic sediment sampling was part of the preoperational program, samples were not analyzed for gamma-emitting nuclides until 1981.

In conclusion, the 2018 aquatic monitoring results for surface

. water, drinking water, groundwater, fish, clams, crabs, and sediment showed only naturally-occurring radioactivity and were consistent with levels measured prior to the operation of OCGS,

• and with levels measured in past years. No radioactivity attributable to activities at OCGS was detected in any aquatic samples during 2018 and no adverse long-term trends are shown in the aquatic monitoring data.

29

8.

Atmospheric Environment

1.

Airborne

a.

Air Particulates Continuous air particulate samples were collected from eight locations on a weekly basis. The eight locations were separated into three groups: Group I represents locations near the OCGS site boundary (20, 66 and 111 ), Group II represents the locations at an intermediate distance from the OCGS site (71, 72, and 73), and Group Ill represents the control and locations at a remote distance from OCGS (C and 3). The following analyses were performed:

Gross Beta Weekly samples were analyzed for concentrations of beta emitters (Table C-Vl.1 and C-Vl.2, Appendix C).

Detectable gross beta activity was observed at all locations.

Comparison of results among the three groups aids in determining the effects, if any, resulting from the operation of OCGS. The results from the Site Boundary locations (Group I) ranged from 6.00E-03 to 26.00E-03 pCi/m3 with a mean of 13.00E-03 pCi/m3. The results from the Intermediate Distance locations (Group 11) ranged from 5.00E-03 to 28.00E-03 pCi/m3 with a mean of 12.00E-03 pCi/m3. The results from the Distant locations (Group Ill) ranged from 6.00E-03 to 27.00E-03 pCi/m3 with a mean of 13.00E-03 pCi/m3. The similarity of the results from the three groups indicates that there is no relationship between gross beta activity and distance from OCGS. These results are consistent with data from previous years and indicate no effects from the operation of OCGS (Figures C-4 and C-5, Appendix C).

Air sample filters have been analyzed for gross beta activity since the inception of the preoperational environmental monitoring program in 1966. The preoperational data values ranged from 1.90E-02 to 2. 77E-01 pCi/m3. 2018 gross beta activity values ranged from < 5.00E-03 to 28.00E-03 pCi/m3.

The 2018 results are consistent with historical operational data (Figure C-5, Appendix C) and fall within the range of results observed during the preoperational period.

30

Strontium-89 and Strontium-90 Weekly samples were composited quarterly and analyzed for Sr-89 and,Sr-90 (Table C-Vl.3, Appendix C). No strontium was detected in any of the samples. These results are consistent with historical operational data. The preoperational environmental monitoring program did not include analysis of air samples for Sr-89 and Sr-90.

Gamma Spectrometry Weekly samples were composited quarterly and analyzed for gamma-emitting nuclides (Table C-Vl.4, Appendix C).

Naturally-occurring Be-7 due to cosmic ray activity was detected in 32 of 32 samples. The values ranged from 31.00E-03 to 89.00E-03 pCi/m3. All other nuclides were less than the MDC. These results are consistent with historical operational data. The preoperational environmental monitoring program did not include analysis of air samples for gamma-emitting nuclides.

b.

Airborne Iodine Continuous air samples were collected from eight (C, 3, 20, 66, 71, 72, 73, 111) locations and analyzed weekly for 1-131 (Table C-Vll.1, Appendix C). Consistent with historical operational data, all results were less than the MDC for 1-131. The preoperational environmental monitoring program for OGGS did not include analysis of air media for 1-131.

In conclusion, the atmospheric monitoring data are consistent with preoperational and prior operational data and show no long-term trends in the environment attributable to the operation of OCGS.

2.

Terrestrial

a.

Vegetation Samples were collected from four locations (35, 36, 66, and 115) when available. The following analyses were performed:

31

Strontium-89 and Strontium-90 Vegetation samples from all locations were analyzed for concentrations of Sr-89 and Sr-90 (Table C-Vlll.1, Appendix C). All Sr-89 results were less than the MDC. Sr-90 was detected in 36 of 55 samples. The values ranged from 6.0 to 13.5 pCi/kg wet, which is consistent with historical data.

The following information on Sr-90 is available on the NRG web page under "Backgrounder Radiation Protection and the "Tooth Fairy" Issue" published in December of 2004:

The largest source of Sr-90 in the environment (-99%) is from weapons testing fallout. Approximately 16.8 million curies of Sr-90 were produced and globally dispersed in atmospheric nuclear weapons testing until 1980. As a result of the Chernobyl accident, approximately 216,000 curies of Sr-90 were released into the atmosphere. With a 28-year half-life, Sr-90 still remains in the environment at nominal levels.

The total annual release of Sr-90 into the atmosphere from all 103 commercial nuclear power plants operating in the United States is typically 111000th of a curie. (NUREG/CR-2907 Vol.12). At an individual nuclear power plant, the amount of Sr-90 is so low that it is usually at or below the minimum detectable activity of sensitive detection equipment.

Oyster Creek did not report any Sr-90 released in the Annual Radioactive Effluent Release Report as all analyses for Sr-90 performed were less than the minimum detectable activity.

Gamma Spectrometry Vegetation samples from locations 35, 36, 66, and 115 were analyzed for concentrations of gamma-emitting nuclides (Table C-Vlll.1, Appendix C). Naturally-occurring K-40 activity was found in all samples and ranged from 1,311 to 5,829 pCi/kg wet. Naturally-occurring Be-7 was detected in 29 of 55 samples and ranged from 203 to 2, 169 pCi/kg wet.

All other nuclides were less than the MDC. Preoperational vegetation sample analyses did not include strontium analyses or gamma spectroscopy.

32

Oyster Creek conducted a Cs-137 study in 2006/2007. A report was generated titled "Evaluation of Cesium-137 in Environmental Samples from the Amergen Property East of the Oyster Creek Generating Station". Below is an excerpt from that report:

"The levels of Cs-137 observed in the soil and vegetation samples are consistent with environmental concentrations known to be attributable to fallout from historic nuclear weapons testing and the Chernobyl accident. In addition, the variability of Cs-137 concentrations in soil and vegetation on the farm property appears to be driven by a number of environmental factors. Cs-137 concentrations in soil were non-detectable. Vegetation samples exhibited Cs-137 concentrations from non-detectable to 0.130 pCi/g, with a mean concentration of 0.078 pCi/g. For comparison, in the year 2000, as part of the confirmatory release survey for the adjacent Forked River site to the west of OCGS, the NRC reported that the maximum observed soil concentration of 0.53 pCi/g was not distinguishable from the variation in Cs-137 in the environment due to these fallout sources. The NRC also reported background Cs-137 concentrations in New Jersey coastal plain soils as high as 1.5 and 2.8 pCi/g.

In addition, decay-corrected historic REMP data from a predominantly upwind location, nearly four miles from the OCGS, yields present-day Cs-137 concentrations ranging from 0.862 to 1.68 pCi/g."

In 2018, there was no Cs-137 identified in REMP soil samples, but it was detected in 3 vegetation samples. The concentrations ranged from 19 to 72 pCi/kg wet. It is not unusual for Cs-137 to be identified given the known environmental levels of this radionuclide attributable to atmospheric nuclear weapons testing and the Chernobyl accident.

In conclusion, terrestrial monitoring results for vegetation samples during 2018 showed only naturally-occurring radioactivity and radioactivity associated with fallout from past atmospheric nuclear weapons testing and Chernobyl.

The radioactivity levels detected were consistent with levels measured in past years, and no radioactivity attributable to activities at OCGS was detected in any terrestrial samples.

The terrestrial monitoring data show no adverse long-term trends in the terrestrial environment.

33

C.

Ambient Gamma Radiation Ambient gamma radiation levels were measured using Optically Stimulated Luminenscence Dosimeters (OSLO). Sixty-one OSLO locations were monitored around the site with all measurements below 25 mRem/yr. Results of non-background corrected OSLO measurements are summarized in Tables C-IX.1 to C-IX.3 and Figures C-6 and C-7.

The non-background corrected OSLO measurements ranged from 2.6 to 20.8 mR/standard quarter. In order to correct these results for background radiation, the mean of the dose rates measured at the background OSLO stations (C and 14) was subtracted from the dose measured at each indicator station. The maximum annual background corrected dose was 9.0 mR/year at Station 55, located near the site boundary, 0.3 miles west of the OCGS. This OSLO is located in an area where public access is restricted but the nearest member of the public for direct radiation is considered an individual that works in the warehouse west of the site. The individual is assumed to work 2,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> per year at this location.

The preoperational environmental monitoring program utilized film badges, the results of which are not comparable with the doses measured using thermoluminescent dosimeters or optically stimulated dosimeters during the operational REMP. In conclusion, the 2018 OSLO results are consistent with past operational measurements of direct radiation, and demonstrate that the OCGS continues to be in compliance with the 40 CFR 190 limit on maximum dose to the public.

D.

Land Use Survey A Land Use Survey, conducted in September 2018 around the Oyster Creek Generating Station (OCGS), was performed by Normandeau Associates, Inc. for Exelon Nuclear. The purpose of the survey is to identify within a distance of 5 miles the location in each of the 16 meteorological sectors of the nearest milk animal, the nearest residence and the nearest garden of greater than 500 ft2 producing broad leaf vegetation. The census shall also identify within a distance of 3 miles the location in each of the 16 meteorological sectors all milk animal and all gardens greater than 500 square feet producing broadleaf vegetation. For animals producing milk for human consumption in each of the sixteen meteorological sectors out to a distance of 5 miles from the OCGS, none were observed. The distance and direction of all locations from the OCGS Reactor Building were determined using Global Positioning System (GPS) 34

E.

technology. Though there was a garden found closer in the ENE sector, there were no changes required to the OCGS REMP since that garden is not used in the sample program. The results of this survey are summarized below:

Distance in Feet from the OCGS Reactor Building Sector Residence (ft.)

Garden* (ft.)

1 N

5,655 6,434 2

NNE 3,240 6,569 3

NE 3,245 4,791 4

ENE 5,704 6,486 5

E 6,549 1,758 6

ESE 3,189 2,081 7

SE 3,073 2,321 8

SSE 4,666 5,248 9

s 7,971 9,034 10 SSW 8,344 9,618 11 SW 9,285 9,776 12 WSW 10,713 12,354 13 w

22,191 None 14 WNW None None 15 NW 27,985 None 16 NNW 7,506 12,159

• Greater than 500 fl:2 in size producing broad leaf vegetation Summary of Results - Inter-laboratory Comparison Program The TBE Laboratory analyzed Performance Evaluation (PE) samples of air particulate, air iodine, milk, soil, vegetation, and water matrices for various analytes. The PE samples supplied by Analytics Inc.,

Environmental Resource Associates (ERA) and Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP), were evaluated against the following pre-set acceptance criteria:

A.

Analytics Evaluation Criteria Analytics' evaluation report provides a ratio of TBE's result and Analytics' known value. Since flag values are not assigned by Analytics, TBE evaluates the reported ratios based on internal QC requirements based on the DOE MAPEP criteria.

B.

ERA Evaluation Criteria ERA's evaluation report provides an acceptance range for control and warning limits with associated flag values. ERA's acceptance 35

limits are established per the USEPA, National Environmental Laboratory Accreditation Conference (NELAC), state-specific Performance Testing (PT) program requirements or ERA's SOP for the Generation of Performance Acceptance Limits, as applicable.

The acceptance limits are either determined by a regression equation specific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.

C.

DOE Evaluation Criteria MAPEP's evaluation report provides an acceptance range with associated flag values. MAPEP defines three levels of performance:

Acceptable (flag = "A") - result within +/- 20% of the reference value Acceptable with Warning (flag = "W") - result falls in the +/- 20%

to +/- 30% of the reference value Not Acceptable (flag = "N") - bias is greater than 30% of the reference value Note: The Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP) samples are created to mimic conditions found at DOE sites which do not resemble typical environmental samples obtained at commercial nuclear power facilities.

For the 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.

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 133%). 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) 36

3.

The Analytics September milk 1-131 result was evaluated as Not Acceptable (Ratio of TSE 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 4h Qtr result passed at 101% (NCR 18-24)

4.

The Analytics September soil Cr-51 result was evaluated as Not Acceptable (Ratio of TSE 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 Sq/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 TSE-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).

6.

The ERA November 2018 water Sr-90 sample was evaluated as Not Acceptable. TS E'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 TS E's ability to successfully perform this analysis. (NCR 18-23)

For the EIML laboratory, 170 of 176 analyses met the specified acceptance criteria. Six analyses did not meet the specified acceptance criteria for the following reasons:

1. The MAPEP February 2018 water Ra-226 result of 0.340 +/- 0.040 Sq/L was higher than the acceptable upper range of 0.334 Sq/L.

An investigation was performed to determine reason for the failure.

A backup solution was analyzed with acceptable results. The current study as well as a past study were reanalyzed with acceptable results. No conclusion has been currently drawn from 37

the results of this investigation.

2. The 1st quarter ERA MRAD air filter Am-241 result of 24.6 pCi/filter sample was higher than the known value of 7.86 pCi/filter sample.

A reanalysis with a pretreatment technique was performed. The reanalysis result was 7.3 pCi/filter, which was in the acceptable range. The pretreatment technique will be utilized going forward for Am-241 samples.

3. The 1st quarter ERA MRAD soil Bi-212 result of 1,980 pCi/kg was higher than the known value of 1,240 pCi/kg. The sample was rerun with a different gamma library with acceptable results. The gamma software vendor will be consulted for the differences between the two libraries. In the meantime, EIML will occasionally be counting a standard with known activity to ensure reported values are within the laboratory's acceptance criteria.

4. The 1st quarter ERA MRAD soil K-40 result of 14,100 pCi/kg was higher than the known value of 10,600 pCi/kg. See #3 above for explanation of failure.

5. The ERA RAD 3rd quarter water Cs-137 result of 22.3 +/- 4.9 pCi/L was lower than the known result of 192 pCi/L. A transcription error cause the result submitted to be understate by a factor of 10. The actual result obtained was slightly higher than the acceptance criteria for the study. A "Quick Response" proficiency test was analyzed to help determine the cause of the high result. No definitive cause for the previous high Cs-137 result was determined.

6. The ERA RAD 3rd quarter water Uranium result of 38.2 +/- 1.4 pCi/L was lower than the known result of 51.8 pCi/L. An investigation is underway to determine the reason for the unacceptable result.

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

V.

References

1.

Exelon Nuclear Offsite Dose Calculation Manual for Oyster Creek Generating Station, Procedure CY-OC-170-301.

2.

United States Nuclear Regulatory Commission Branch Technical Position, An Acceptable Radiological Environmental Monitoring Program, Revision 1, 38

November 1979.

3 Pre-Operational Environmental Radiation Survey, Oyster Creek Nuclear Electric Generating Station, Jersey Central Power and Light Company, March 1968.

VI.

Errata No corrections were made to the 2017 AREOR.

39

APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT

SUMMARY

Intentionally left blank

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE OYSTER CREEK GENERATING STATION, 2018 NAME OF FACILITY:

OYSTER CREEK GENERATING STATION DOCKET NUMBER:

50-219 LOCATION OF FACILITY: OCEAN COUNTY, NJ REPORTING PERIOD:

2018 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

MEDIUM OR REQUIRED LOCATIONS LOCATION NUMBER OF PATHWAY SAMPLED TYPES OF NUMBER OF LOWER LIMIT MEAN(M)

MEAN(M)

MEAN(M)

STATION#

NONROUTINE (UNITOF ANALYSIS ANALYSIS OF DETECTION (F)

(F)

(F)

NAME REPORTED MEASUREMENT)

PERFORMED PERFORMED (LLD)

RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENTS SURFACE WATER H-3 28 200

<LLD

<LLD 0

(PCIILITER)

GAMMA 28 MN-54 15

<LLD

<LLD u

C0-58 15

<LLD

<LLD 0

FE-59 30

<LLD

<LLD u

C0-60 15

<LLD

<LLD u

ZN-65 30

<LLD

<LLD u

NB-95 15

<LLD

<LLD u

ZR-95 30

<LLD

<LLD u

1-131 15

<LLD

<LLD u

)>

CS-134 15

<LLD

<LLD u

I CS-137 18

<LLD

<LLD u

..lo.

BA-140 60

<LLD

<LLD u

U\\-140 15

<LLD

<LLD 0

DRINKING WATER H-3 48 NA

<LLD

<LLD 0

(PC/11..ITER)

GR-B 48 4

5 2.1 9.2 1N INDICATOR 0

(35/36)

(8/12)

(11/11)

ON-SITE DOMESTIC WELL AT OCGS 1.8-13.B 1.6-3.2 4.8-13.B 0.2 MILES N OF SITE 1-131 (LOW LVL) 48

<LLD

<LLD 0

GAMMA 48 MN-54 15

<LLD

<LLD u

C0-58 15

<LLD

<LLD 0

FE-59 30

<LLD

<LLD u

C0-60 15

<LLD

<LLD u

ZN-65 30

<LLD

<LLD u

NB-95 15

<LLD

<LLD u

ZR-95 30

<LLD

<LLD u

CS-134 15

<LLD

<LLD u

CS-137 18

<LLD

<LLD u

BA-140 60

<LLD

<LLD u

U\\-140 15

<LLD

<LLD u

(M) The Mean Values are calculated using the positive values. (F) Fraction of detectable measurement are indicated in parentheses.

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE OYSTER CREEK GENERATING STATION, 2018 NAME OF FACILITY:

OYSTER CREEK GENERATING STATION DOCKET NUMBER:

50-219 LOCATION OF FACILITY: OCEAN COUNTY, NJ REPORTING PERIOD:

2018 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

MEDIUM OR REQUIRED LOCATIONS LOCATION NUMBER OF PATHWAY SAMPLED TYPES OF NUMBER OF LOWER LIMIT MEAN(M)

MEAN(M)

MEAN(M)

STATION#

NONROUTINE (UNITOF ANALYSIS ANALYSIS OF DETECTION (F)

(F)

(F)

NAME REPORTED MEASUREMEN7)

PERFORMED PERFORMED (LLD)

RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENTS GROUNDWATER H-3 8

200

<LLD NA 0

(PCI/UTER)

GAMMA 8

MN-54 15

<LLD NA 0

C0-58 15

<LLD NA 0

FE-59 30

<LLD NA 0

C0-60 15

<LLD NA 0

ZN-65 30

<LLD NA 0

NB-95 15

<LLD NA 0

l>

ZR-95 30

<LLD NA 0

I 1-131 15

<LLD NA 0

N CS-134 15

<LLD NA 0

CS-137 18

<LLD NA 0

BA-140 60

<LLD NA 0

LA-140 15

<LLD NA 0

BOTTOM FEEDER GAMMA 4

(PCIIKG WE7)

K-40 NA 3763 3398 3763 33 INDICATOR 0

(1/1)

(3/3)

(1/1)

EAST OF RT 9 BRIDGE IN OCGS DISCHARGE 2475-4245 0.4 MILES ESE OF SITE MN-54 130

<LLD NA 0

C0-58 130

<LLD NA 0

FE-59 260

<LLD NA 0

C0-60 130

<LLD NA 0

ZN-65 260

<LLD NA 0

CS-134 130

<LLD NA 0

CS-137 150

<LLD NA 0

(M) The Mean Values are calculated using the positive values. (F) Fraction of detectable measurement are indicated in parentheses.

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE OYSTER CREEK GENERATING STATION, 2018 NAME OF FACILITY:

OYSTER CREEK GENERATING STATION DOCKET NUMBER:

50-219 LOCATION OF FACILITY: OCEAN COUNTY, NJ REPORTING PERIOD:

2018 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

MEDIUM OR REQUIRED LOCATIONS LOCATION NUMBER OF PATHWAY SAMPLED TYPES OF NUMBER OF LOWER LIMIT MEAN(M)

MEAN (M)

MEAN(M)

STATION#

NON ROUTINE (UNITOF ANALYSIS ANALYSIS OF DETECTION (F)

(F)

(F)

NAME REPORTED MEASUREMEN1J PERFORMED PERFORMED (LLD)

RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENTS PREDATOR GAMMA 7

(PCIIKG WET)

K-40 NA 3997 3529 3997 93 INDICATOR 0

(414)

(313)

(414)

OCGS DISCHARGE CANAL 3513 - 4301 2732-4100 3513-4301 0.1 MILES WSW OF SITE MN-54 130

<LLD

<LLD 0

C0-58 130

<LLD

<LLD 0

FE-59 260

<LLD

<LLD 0

C0-60 130

<LLD

<LLD 0

ZN-65 260

<LLD

<LLD 0

CS-134 130

<LLD

<LLD 0

CS-137 150

<LLD

<LLD 0

)>

I Cl)

CLAMS GAMMA 6

(PCIIKG WET)

K-40 NA 1393 1551 1597 24 INDICATOR 0

(414)

(2/2)

(2/2)

BARNEGAT BAY 1118-1900 1326 -1776 1294-1900 2.1 MILES E OF SITE MN-54 130

<LLD

<LLD u

C0-58 130

<LLD

<LLD u

FE-59 260

<LLD

<LLD u

C0-60 130

<LLD

<LLD u

ZN-65 260

<LLD

<LLD u

CS-134 130

<LLD

<LLD u

CS-137 150

<LLD

<LLD u

CRABS GAMMA 2

(PCIIKG WET)

K-40 NA 1585 NA 1840 93 INDICATOR 0

(212)

(111)

OCGS DISCHARGE CANAL 1329-1840 0.1 MILES WSW OF SITE MN-54 130

<LLD NA u

C0-58 130

<LLD NA u

FE-59 260

<LLD NA u

C0-60 130

<LLD NA u

ZN-65 260

<LLD NA u

CS-134 130

<LLD NA u

CS-137 150

<LLD NA u

(M) The Mean Values are calculated using the positive values. (F) Fraction of detectable measurement are indicated in parentheses.

TABLE A*1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE OYSTER CREEK GENERATING STATION, 2018 NAME OF FACILITY:

OYSTER CREEK GENERATING STATION DOCKET NUMBER:

50-219 LOCATION OF FACILITY: OCEAN COUNTY, NJ REPORTING PERIOD:

2018 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

MEDIUM OR REQUIRED LOCATIONS LOCATION NUMBER OF PATHWAY SAMPLED TYPES OF NUMBER OF LOWER LIMIT MEAN(M)

MEAN(M)

MEAN(M)

STATION#

NONROUTINE (UNITOF ANALYSIS ANALYSIS OF DETECTION (F)

(F)

(F)

NAME REPORTED MEASUREMEN7)

PERFORMED PERFORMED (LLD)

RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENTS SEDIMENT GAMMA 8

(PC/JKG DRY)

BE-7 NA 547

<LLD 547 23 INDICATOR 0

(1/6)

(1/2)

BARNEGAT BAY OFF STOUTS CREEK 3.6 MILES ENE OF SITE K-40 NA 5112 15150 15150 94CONTROL 0

(6/6)

(2/2)

(2/2)

GREAT BAY/LITTLE EGG HARBOR 2195 -11940 1340-17160 1340-17160 20.0 MILES SSW OF SITE MN-54 NA

<LLD

<LLD 0

C0-58 NA

<LLD

<LLD 0

C0-60 NA

<LLD

<LLD 0

CS-134 150

<LLD

<LLD 0

)>

CS-137 180

<LLD

<LLD 0

I Ra-226 NA 1115 1188 1458 24 INDICATOR 0

~

(3/6)

(1/2)

(1/2)

BARNEGAT BAY 905-1458 2.1 MILES E OF SITE Th-226 NA 374 692 692 94CONTROL 0

(616)

(212)

(212)

GREAT BAY/LITTLE EGG HARBOR 203-733 438-946 438-946 20.0 MILES SSW OF SITE AIR PARTICULATE GR*B 414 10 13 13 14 CCONTROL 0

(E-3 PC/ICU.METER)

(293/308)

(100/106)

(51/53)

JCP&L OFFICE -COOKSTOWN NJ 5-28 6-27 7-27 24.7 MILES NW OF SITE SR-89 32 10

<LLD

<LLD 0

SR-90 32 10

<LLD

<LLD 0

GAMMA 32 BE-7 NA 59.7 61.8 71.9 66 INDICATOR 0

(24/24)

(8/8)

(4/4)

EAST OF RT 9 AND SOUTH OF OCGS DISCHG 38-89 31-86 50-89 0.4 MILES SE OF SITE MN-54 NA

<LLD

<LLD 0

C0-58 NA

<LLD

<LLD 0

C0-60 NA

<LLD

<LLD 0

CS-134 50

<LLD

<LLD 0

CS-137 60

<LLD

<LLD 0

(M) The Mean Values are calculated using the positive values. (F) Fraction of detectable measurement are indicated in parentheses.

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE OYSTER CREEK GENERATING STATION, 2018 NAME OF FACILITY:

OYSTER CREEK GENERATING STATION DOCKET NUMBER:

50-219 LOCATION OF FACILITY: OCEAN COUNTY, NJ REPORTING PERIOD:

2018 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

MEDIUM OR REQUIRED LOCATIONS LOCATION NUMBER OF PATHWAY SAMPLED TYPES OF NUMBER OF LOWER LIMIT MEAN(M)

MEAN(M)

MEAN(M)

STATION#

NONROUTINE (UNITOF ANALYSIS ANALYSIS OF DETECTION (F)

(F)

(F)

NAME REPORTED MEASUREMENT)

PERFORMED PERFORMED (LLD)

RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENTS AIR IODINE GAMMA 414 (E-3 PC/ICU.METER) 1-131 70

<LLD

<LLD 0

VEGETATION SR-89 55 25

<LLD

<LLD 0

(PCVKGWET)

SR-90 55 5

5 3.7 5.6 115 INDICATOR 0

(28/39)

(8/16)

(14/17)

EAST OF SITE ON FINNINGER FARM 1.4-13.5 1.3-6.0 1.4 - 13.5 0.3 MILES E OF SITE GAMMA 55 l>

BE-7 NA 671 327 1071 66 INDICATOR 0

I (24/39)

(5/16)

(717)

EAST OF RT 9 AND SOUTH OF OCGS DISCHG (11 203-2169 214-399 310-2169 0.4 MILES SE OF SITE K-40 NA 4071 3693 4631 66 INDICATOR 0

(39/39)

(16/16)

[117)

EAST OF RT 9 AND SOUTH OF OCGS DISCHG 1311-5635 1896-5829 3572-5236 0.4 MILES SE OF SITE 1-131 60

<LLD

<LLD 0

CS-134 60

<LLD

<LLD 0

CS-137 80

<LLD

<LLD 0

BA-140 NA

<LLD

<LLD 0

LA-140 NA

<LLD

<LLD 0

DIRECT RADIATION OSLD-QUARTERL Y 242 NA 8.7 9.5 19.1 55 INDICATOR 0

(MILL/REM/STD.MO.)

(234/234)

(8/8)

(4/4)

SOUTHERN AREA STORES SECURITY FENCE 4.0-23.1 7.5-13.7 15.3-23.1 0.3 MILESW (M) The Mean Values are calculated using the positive values. (F) Fraction of detectable measurement are indicated in parentheses.

Intentionally left blank

APPENDIX B LOCATION DESIGNATION, DISTANCE & DIRECTION, AND SAMPLE COLLECTION & ANALYTICAL METHODS

Intentionally left blank

TABLE B-1:

Sample Medium Station Code Distance Azimuth Description Location Designation and Identification System for the Oyster Creek Generating Station APT = Air Particulate AIO

= Air Iodine OW

Drinking Water VEG = Vegetation SWA = Surface Water AQS = Aquatic Sediment Station's Designation Clam

OSLO=

Clam Optically Stimulated Dosimetry Fish Crab*

GW

= Fish

= Crab

= Ground Water Distance from the OCGS in miles Azimuth with respect to the OCGS in degrees Meteorological sector in which the station is located and a narrative description B-1

TABLE B-2:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Oyster Creek Generating Station, 2018 Sample Station Distance Azimuth Medium

~ fmilesl (degrees)

Description OSLO 0.4 219 SW of site at OCGS Fire Pond, Forked River, NJ DW 1S 0.1 209 On-site southern domestic well at OCGS, Forked River, NJ DW 1N 0.2 349 On-site northern domestic well at OCGS, Forked River, NJ APT, AIO, OSLO 3

6.0 97 East of site, near old Coast Guard Station, Island Beach State Park OSLO 4

4.6 213 SSW of site, Route 554 and Garden State Parkway, Barnegat, NJ OSLO 5

4.2 353 North of site, at Garden State Parkway Rest Area, Forked River, NJ OSLO 6

2.1 13 NNE of site, Lane Place, behind St. Pius Church, Forked River, NJ OSLO

8.

2.3 177 South of site, Route 9 at the Waretown Substation, Waretown, NJ OSLO 9

2.0 230 WSW of site, west of where Route 532 and the Garden State Parkway meet, Waretown, NJ CD APT, AIO, OSLO C

24.7 313 NW of site, JCP&L office in rear parking lot, Cookstown, NJ I I\\)

OSLO 11 8.2 152 SSE of site, 801h and Anchor Streets, Harvey Cedars, NJ OSLO 14 20.8 2

North of site, Larrabee Substation on Randolph Road, Lakewood, NJ APT,AIO 20 0.7 95 East of site, on Finninger Farm on south side of access road, Forked River, NJ OSLO 22 1.6 145 SE of site, on Long John Silver Way, Skippers Cove, Waretown, NJ SWA, CLAM, AQS 23 3.6 64 ENE of site, Barnegat Bay off Stouts Creek, approximately 400 yards SE of "Flashing Light 1" SWA, CLAM, AQS 24 2.1 101 East of site, Barnegat Bay, approximately 250 yards SE of "Flashing Light 3" SWA,AQS, 33 0.4 123 ESE of site, east of Route 9 Bridge in OCGS Discharge Canal FISH, CRAB VEG 35 0.4 111 ESE of site, east of Route 9 and north of the OCGS Discharge Canal, Forked River, NJ VEG 36 23.1 319 NW of site, at "U-Pick" Farm, New Egypt, NJ

TABLE 8-2:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Oyster Creek Generating Station, 2018 Sample Station Distance Azimuth Medium Code (miles)

(degrees)

Description DW 37 2.2 18 NNE of Site, off Boox Road at Lacey MUA Pumping Station, Forked River, NJ DW 38 1.6 197 SSW of Site, on Route 532, at Ocean Township MUA Pumping Station, Waretown, NJ OSLD 46 5.6 323 NW of site, on Lacey Road, adjacent to utility pole BT 259 65, Forked River, NJ OSLO 47 4.6 26 NNE of site, Route 9 and Harbor Inn Road, Bayville, NJ OSLD 48 4.5 189 South of site, at intersection of Brook and School Streets, Barnegat, NJ OSLO 51 0.4 358 North of site, on the access road to Forked River site, Forked River, NJ OSLD 52 0.3 333 NNW of site, on the access road to Forked River site, Forked River, NJ OSLD 53 0.3 309 NW of site, at sewage lift station on the access road to the Forked River site, CJ Forked River, NJ I

00 OSLD 54 0.3 288 WNW of site, on the access road to Forked River site, Forked River, NJ OSLD 55 0.3 263 West of site, on Southern Area Stores security fence, west of OCGS Switchyard, Forked River, NJ OSLO 56 0.3 249 WSW of site, on utility pole east of Southern Area Stores, west of the OCGS Switchyard, Forked River, NJ OSLD 57 0.2 206 SSW of site, on Southern Area Stores access road, Forked River, NJ OSLO 58 0.2 188 South of site, on Southern Area Stores access road, Forked River, NJ OSLD 59 0.3 166 SSE of site, on Southern Area Stores access road, Waretown, NJ OSLD 61 0.3 104 ESE of site, on Route 9 south of OCGS Main Entrance, Forked River, NJ

TABLE B-2:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Oyster Creek Generating Station, 2018 Sample Station Distance Azimuth Medium Code (miles)

(degrees)

Description OSLO 62 0.2 83 East of site, on Route 9 at access road to OCGS Main Gate, Forked River, NJ OSLO 63 0.2 70 ENE of site, on Route 9, between main gate and OCGS North Gate access road, Forked River, NJ OSLO 64 0.3 42 NE of site, on Route 9 North at entrance to Finninger Farm, Forked River, NJ OSLO 65 0.4 19 NNE of site, on Route 9 at Intake Canal Bridge, Forked River, NJ APT,AIO, 66 0.4 133 SE of site, east of Route 9 and south of the OCGS Discharge Canal, inside fence, Waretown, NJ OSLD,VEG OSLO 68 1.3 266 West of site, on Garden State Parkway North at mile marker 71.7, Lacey Township, NJ APT, AIO, OSLO 71 1.6 164 SSE of site, on Route 532 at the Waretown Municipal Building, Waretown, NJ APT, AIO, OSLO 72 1.9 25 NNE of site, on Lacey Road at Knights of Columbus Hall, Forked River, NJ OJ APT, AIO, OSLO 73 1.8 108 ESE of site, on Bay Parkway, Sands Point Harbor, Waretown, NJ I

.i:,.

OSLO 74 1.8 88 East of site, Orlando Drive and Penguin Court, Forked River, NJ OSLO 75 2.0 71 ENE of site, Beach Blvd. and Maui Drive, Forked River, NJ OSLO 78 1.8 2

North of site, 1514 Arient Road, Forked River, NJ OSLO 79 2.9 160 SSE of site, Hightide Drive and Bonita Drive, Waretown, NJ OSLO 81 3.5 201 SSW of site, on Rose Hill Road at intersection with Barnegat Boulevard, Barnegat, NJ OSLO 82 4.4 36 NE of site, Bay Way and Clairmore Avenue, Lanoka Harbor, NJ OSLO 84 4.4 332 NNW of site, on Lacey Road, 1.3 miles west of the Garden State Parkway on siren pole, Lacey Township, NJ OSLO 85 3.9 250 WSW of site, on Route 532, just east of Wells Mills Park, Waretown, NJ OSLO 86 5.0 224 SW of site, on Route 554, 1 mile west of the Garden State Parkway, Barnegat, NJ

TABLE 8-2:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Oyster Creek Generating Station, 2018 Sample Station Distance Azimuth Medium Code

{miles)

{degrees)

Description OSLO 88 6.6 125 SE of site, eastern end of 3rd Street, Barnegat Light, NJ OSLO 89 6.1 108 ESE of site, Job Francis residence, Island Beach State Park OSLO 90 6.3 75 ENE of site, parking lot A-5, Island Beach State Park OSLO 92 9.0 108 NE of site, at Guard Shack/Toll Booth, Island Beach State Park FISH, CRAB 93 0.1 242 WSE of site, OCGS Discharge Canal between Pump Discharges and Route 9, Forked River, NJ SWA,AQS, 94 CLAM, FISH 20.0 198 SSW of site, in Great Bay/Little Egg Harbor OSLO 98 1.6 318 NW of site, on Garden State Parkway North at mile marker 73, Lacey Township, NJ OSLO 99 1.5 310 NW of site, on Garden State Parkway at mile marker 72.8, Lacey Township, NJ Ill I en OSLO 100 1.4 43 NE of site, Yacht Basin Plaza South off Lakeside Dr., Lacey Township, NJ OSLO 101 1.7 49 NE of site, end of Lacey Rd. East, Lacey Township, NJ OSLO 102 1.6 344 NNW of site, end of Sheffield Dr., Barnegat Pines, Lacey Township, NJ OSLO 103 2.4 337 NNW of site, Llewellyn Pkwy., Barnegat Pines, Lacey Township, NJ OSLO 104 1.8 221 SW of site, Rt. 532 West, before Garden State Parkway, Ocean Township, NJ OSLO 105 2.8 222 SW of site, Garden State Parkway North beside mile marker 69.6, Ocean Township, NJ OSLO 106 1.2 288 WNW of site, Garden State Parkway North beside mile marker 72.2, Lacey Township, NJ OSLO 107 1.3 301 WNW of site, Garden State Parkway North beside mile marker 72.5, Lacey Township, NJ OSLO 109 1.2 141 SE of site, Lighthouse Dr., Waretown, Ocean Township, NJ

TABLE 8-2:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Oyster Creek Generating Station, 2018 Sample Station Distance Azimuth Medium Code (miles)

(degrees)

Description OSLO 110 1.5 127 SE of site, Tiller Dr. and Admiral Way, Waretown, Ocean Township, NJ APT,AIO 111 0.3 64 ENE of site, Finninger Farm property along access road, Lacey Township, NJ OLSD 112 0.2 176 S of site, along southern access road OLSD 113 0.3 90 E of site, along Rt.9, North DW 114 0.8 267 Well at Bldg 25 on Forked River site VEG 115 0.3 96 E of Site, on Finninger Farm OSLO T1 0.4 219 SW of site, at OCGS Fire Pond, Forked River, NJ GW MW-24-3A 0.8 97 ESE of site, Finninger Farm on South side of access road, Lacey Township, NJ CJ GW W-3C 0.4 112 ESE of site, Finninger Farm adjacent to Station 35, Lacey Township, NJ I 0)

TABLE B-3:

Sample Medium Drinking Water Drinking Water Drinking water CJ I.....

Drinking Water Surface Water Surface Water Groundwater Groundwater Fish Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Oyster Creek Generating Station, 2018 Analysis Sampling Method Collection Procedure Number Sample Size Analytical Procedure Number ER-OCGS-06, Collection of water samples for TBE, TBE-2007 Gamma emitting radioisotopes analysis radiological analysis Gamma Spectroscopy Monthly samples 1 gallon Env. Inc., GS-01 Determination of gamma emitters by CY-OC-120-1200, REMP sample collection gamma spectroscopy procedure - well water ER-OCGS-06, Collection of water samples for TBE, TBE-2010 Tritium and carbon-14 analysis by liquid radiological analysis scintillation Tritium Monthly samples 1 gallon CY-OC-120-1200, REMP sample collection Env. Inc., T-02 Determination of tritium in water (direct procedure - well water method)

ER-OCGS-06, Collection of TBE, TBE-2031 Radioiodine in drinking water water samples for radiological analysis Iodine Monthly Samples 1 gallon Env. Inc., 1-131-01 Determination of 1-131 in water by CY-OC-120-1200, REMP sample collection procedure - well water anion exchange TBE, TBE-2008 Gross Alpha and/or gross beta activity in ER-OCGS-06, Collection of various matrices water samples for radiological analysis Env. Inc., W(DS)-01 Determination of gross alpha and/or Gross Beta Monthly Samples 1 gallon gross beta in water (dissolved solids or total residue)

CY-OC-120-1200, REMP sample collection procedure - well water Env. Inc., W(SS)-02 Determination of gross alpha and/or gross beta in water (suspended solids)

ER-OCGS-06, Collection of water samples for TBE, TBE-2007 Gamma emitting radioisotopes analysis Gamma Spectroscopy Grab Sample radiological analysis 1 gallon Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy ER-OCGS-06, Collection of water samples for TBE, TBE-2010 Tritium and carbon-14 analysis by liquid Tritium Grab Sample radiological analysis 1 gallon scintillation Env. Inc., T-02 Determination of tritium in water (direct method)

ER-OCGS-06, Collection of water samples for TBE, TBE-2010 Tritium and carbon-14 analysis by liquid Tritium Grab Sample radiological analysis 1 gallon scintillation Gamma Grab Sample ER-OCGS-06, Collection of water samples for 1 gallon TBE, TBE-2007 Gamma-emitting radioisotopes analysis radiological analysis Semi-annual samples ER-OCGS-14, Collection of fish samples for TBE, TBE-2007 Gamma emitting radioisotopes analysis Gamma Spectroscopy collected via hook and radiological analysis 250 grams (wet)

Env. Inc., GS-01 Determination of gamma emitters by line technique and traps gamma spectroscopy l

TABLE B-3:

Sample Medium Clams and Crabs Sediment Air Particulates Air Particulates OJ I

00 Air Particulates Air Iodine Vegetation Vegetation OSLO Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Oyster Creek Generating Station, 2017 Analysis Sampling Method Collection Procedure Number Sample Size Analytical Procedure Number Semi-annual and annual ER-OCGS-16, Collection of clam and crab TBE, TBE-2007 Gamma emitting radioisotopes analysis Gamma Spectroscopy samples collected using samples for radiological analysis 300 grams (wet)

Env. Inc., GS-01 Determination of gamma emitters by clam tongs and traps.

gamma spectroscopy ER-OCGS-03, Collection of aquatic sediment TBE, TBE-2007 Gamma emitting radioisotopes analysis Gamma Spectroscopy Semi-annual grab samples for radiological analysis 1000 grams (dry) samples Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy One-week composite of TBE, TBE-2008 Gross alpha and/or beta activity in continuous air sampling ER-OCGS-05, Collection of air iodine and air 1 filter (approximately various matrices Gross Beta particulate samples for radiological analysis 300 cubic meters through glass fiber filter weekly)

Env. Inc., AP-02 Determination of gross alpha and/or paper gross beta in air particulate fillers TBE, TBE-2023 Compositing of samples 13 filters TBE, TBE-2007 Gamma emitting radioisotopes analysis Gamma Spectroscopy Quarterly composite of Env. Inc., AP-03 Procedure for compositing air (approximately 4000 each station particulate filters for gamma spectroscopic Env. Inc., GS-01 Determination of gamma emitters by analysis cubic meters) gamma spectroscopy Quarterly composite of ER-OCGS-05, Collection of air iodine and air 13 filters TBE, TBE-2019 Radiostronlium analysis by ion Strontium-89/90 particulate samples for radiological analysis (approximately 4000 each station cubic meters) exchange One-week composite of ER-OCGS-05, Collection of air iodine and air 1 filter (approximately TBE, TBE-2007 Gamma emitting radioisotopes analysis Gamma Spectroscopy continuous air sampling particulate samples for radiological analysis 300 cubic meters Env. Inc., 1-131-02 Determination of 1-131 in charcoal through charcoal filter weekly) canisters by gamma spectroscopy (batch method)

ER-OCGS-04, Collection of food products and TBE, TBE-2007 Gamma emitting radioisotopes analysis Gamma Spectroscopy Grab sample during broadleaf vegetation samples for radiological 1000 grams growing season analysis Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy ER-OCGS-04, Collection of food products and Strontium-89/90 Grab sample during broadleaf vegetation samples for radiological 1000 grams TBE, TBE-2019 Radiostrontium analysis by ion exchange growing season analysis Optically Stimulated Quarterly OSLDs Luminescence comprised of two ER OCGS-02, Collection/Exchange of Field 2 dosimeters Landauer Incorporated Dosimetry Al203:C Landauer Dosimeters for Radiological Analysis Incorporated elements.

NW w

Oyster Creek Generating Station REMP Sample Locations within a 1 Mile Radius 0.3 0.3MilH

-r:==--==-----

0.15 Figure B-1 Locations of REMP Stations within a 1-mile radius of the Oyster Creek Generating Station B-9 s

Date: 09/04/12

w Oyster Creek. Generating Station REMP Sample Locatiions, withiin a 1 to 5 Mile Radius lU '

0 ll

_c:::::J __ ::::JI ___

Figure B-2 Locations of REMP Stations within a 1 to 5-mile radius of the Oyster Creek Generating Station B-10 E

N s

m: D1!l2e./1$

w--..

s Oyster Creek Generating Station REMP Sample Locations over a 5 Mile Radius 5.5 2.76 0

5.5 Mas

_c::J_=::11 ___

Figure B-3 Locations of REMP Stations greater than 5 miles from the Oyster Creek Generating Station B-11 s

Date: 08/27/12

Intentionally left blank

APPENDIX C DATA TABLES AND FIGURES PRIMARY LABORATORY

Intentionally left blank

Table C-1.1 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD 23 24 33 94 01/03/18 - 01/31/18

< 192

< 197 02/07 /18 - 02/28/18

< 184

< 181 03/06/18 - 03/27 /18

< 179

< 178 04/02/18 - 04/25/18

< 180

< 185 04/30/18 - 05/29/18

< 188

< 188

< 193

< 193 06/06/18 - 06/27 /18

< 175

< 179 07/05/18 - 07/31/18

< 193

< 191 08/08/18 - 08/31/18

< 191

< 196 09/07 /18 - 09/25/18

< 194

< 188 10/04/18 - 11/01/18

< 182

< 183

< 192

< 192 11/05/18 - 11 /28/18

< 191

< 191 12/04/18 - 01/02/19

< 192

< 189 MEAN C-1

Table C-1.2 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RES UL TS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE PERIOD Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 23 05/14/18 - 05/14/18

<4

<7

< 13

< 9

< 13

< 7

< 8

< 11

<6

< 6

< 37

< 12 10/16/18 - 10/16/18

< 5

<6

< 11

<5

< 11

<6

< 8

< 11

<6

<5

< 29

< 9 MEAN 24 05/14/18 - 05/14/18

<7

<6

< 15

< 7

< 10

<5

< 10

< 13

< 8

<7

< 36

< 12 10/16/18 - 10/16/18

<6

<6

< 15

<7

< 14

<6

< 12

< 13

<7

<8

< 34

< 12 MEAN 33 01/03/18 - 01/31/18

< 4

< 7

< 17

< 7

< 9

< 7

< 11

< 9

< 8

<7

< 27

< 9 02/07 /18 - 02/28/18

< 8

< 8

< 19

< 9

< 15

< 8

< 12

< 9

< 7

< 7

< 31

< 9 03/06/18 - 03/27/18

< 8

<6

< 15

< 8

< 15

<7

< 13

< 11

< 9

<6

< 28

< 8 C) 04/02/18 - 04/25/18

<5

<5

< 12

< 7

< 11

<6

<9

< 9

< 5

<5

< 24

< 8 I

04/30/18 - 05/29/18

< 3

<3

< 8

<4

< 8

< 3

< 6

< 10

<3

<3

< 22

<6 N

06/06/18 - 06/26/18

<6

<6

< 14

<5

< 12

<7

< 11

< 13

< 7

<7

< 36

<8 07/05/18 - 07/31/18

< 7

< 7

< 18

<7

< 15

< 7

< 12

< 14

<8

<8

< 36

< 13 08/08/18 - 08/31/18

<6

< 6

< 13

< 8

< 14

<8

< 11

< 12

<6

<6

< 31

<6 09/07 /18 - 09/25/18

<6

<5

< 10

< 7

< 11

< 6

<9

< 12

<6

<6

< 32

< 10 10/04/18 - 11/01/18

< 7

< 6

< 17

<6

< 17

<8

< 13

< 13

<8

<7

< 32

< 11 11/07/18 - 11/26/18

< 7

< 7

< 12

< 7

< 15

<6

< 12

< 11

<8

< 7

< 33

< 11 12/04/18 - 01/02/19

<5

<6

< 11

< 7

< 11

<6

< 10

< 8

< 6

<6

< 25

< 7 MEAN 94 01/03/18 - 01/31/18

< 11

< 7

< 16

< 12

< 20

< 9

< 14

< 11

< 8

< 11

< 35

< 14 02/07 /18 - 02/28/18

<6

<6

< 13

<4

< 12

<6

< 10

< 10

<6

<6

< 24

< 8 03/06/18 - 03/27 /18

< 5

< 5

< 11

< 6

< 12

<6

< 10

< 10

<6

<7

< 28

< 9 04/02/18 - 04/25/18

<4

< 4

< 11

< 5

< 9

<5

<7

< 8

< 5

< 5

< 21

< 8 04/30/18 - 05/29/18

<4

< 3

<7

< 3

< 7

<4

< 6

< 12

<4

<4

< 27

< 9 06/06/18 - 06/27 /18

< 8

< 6

< 18

<6

< 18

< 7

< 12

< 12

< 8

<7

< 39

< 12 07/05/18 - 07/31/18

<7

< 7

< 12

< 10

< 10

< 8

< 8

< 14

< 8

< 7

< 38

< 7 08/08/18 - 08/31/18

< 5

<6

< 18

<6

< 12

< 7

< 14

< 12

<8

<7

< 32

< 14 09/07 /18 - 09/25/18

< 7

< 7

< 14

< 9

< 11

< 6

< 12

< 15

<6

<7

< 32

< 11 10/04/18 - 11/01/18

< 5

< 9

< 11

<5

< 11

< 6

< 10

< 14

< 7

< 7

< 27

< 11 11/05/18 - 11/28/18

< 5

<6

< 12

< 10

< 18

<8

< 13

< 9

<6

<7

< 35

< 11 12/04/18 - 01/02/19

< 8

<6

< 13

<6

< 13

<6

< 12

< 8

< 7

<7

< 28

< 8 MEAN

Table C-11.1 Table C-11.2 Table C-11.3 CONCENTRATIONS OF TRITIUM IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD 114 1N 1S 37 38 01/02/18 - 01/31/18

< 196

< 198 (1)

< 195

< 195 02/06/18 - 02/28/18

< 180

< 184 (1)

< 185

< 183 03/06/18 - 03/27 /18

< 179

< 178 (1)

< 175

< 177 04/02/18 - 04/25/18

< 177

< 181 (1)

< 183

< 181 04/30/18 - 05/30/18

< 194

< 195 (1)

< 188

< 195 06/05/18 - 06/26/18

< 180

< 196 (1)

< 179

< 178 07/03/18 - 07/31/18

< 192

< 188 (1)

< 190

< 197 08/06/18 - 08/31/18

< 195

< 195 (1)

< 195

< 197 09/05/18 - 09/26/18

< 196

< 190 (1)

< 198

< 196 10/01/18 - 11/02/18

< 198

< 199 (1)

< 195

< 197 11/05/18 - 11/28/18

< 189

< 191 (1)

< 187

< 195 12/04/18 - 01/04/19

< 190

< 189 (1)

< 188

< 191 MEAN CONCENTRATIONS OF GROSS BETA IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD 114 1N 1S 37 38 01/02/18 - 01/31/18 5.0 +/- 1.5 8.2+/- 1.7 (1)

< 1.6 1.6 02/06/18 - 02/28/18 3.5 +/- 1.3 8.6 +/- 1.6 (1) 1.6 +/- 1.0 2.3 +/- 1.1 03/06/18 - 03/27 /18 4.5 +/- 1.3 6.4 +/- 1.5 (1) 2.4 +/- 1.1 2.3 +/- 1.1 04/02/18 - 04/25/18 3.0 +/- 1.2 5.4 +/- 1.4 (1) 1.8 +/- 1.0 2.1 +/- 1.0 04/30/18 - 05/30/18 3.4 +/- 1.4 4.8 +/- 1.5 (1)

< 1.7 2.8 +/- 1.3 06/05/18 - 06/26/18 3.0 +/- 1.3 6.1 +/- 1.6 (1)

< 1.6 2.2 +/- 1.2 07/03/18 - 07/31/18 3.2 +/- 1.3 11.4 +/- 1.9 (1) 3.2 +/- 1.2 2.5 +/- 1.2 08/06/18 - 08/31/18 4.4 +/- 1.5 11.8 +/- 1.9 (1) 1.9 +/- 1.3 1.9 +/- 1.2 09/05/18 - 09/26/18 4.8 +/- 1.5 13.0 +/- 2.0 (1)

< 1.7 1.8 +/- 1.2 10/01/18 - 11/02/18 3.1 +/- 1.4 13.8 +/- 2.0 (1) 1.9 +/- 1.2 2.3 +/- 1.2 11/05/18 - 11/28/18 3.0 +/- 1.3 11.7 +/- 1.9 (1) 1.9 +/- 1.1 2.3 +/- 1.2 12/04/18 - 01/04/19 4.0 +/- 1.4 13.0 +/- 1.9 (1) 1.9 +/- 1.1 1.8 +/- 1.1 MEAN +/- 2 STD DEV 3.8 +/- 2.0 9.1 +/- 7.1 2.1 +/- 1.0 2.2 +/- 0.6 CONCENTRATIONS OF 1-131 IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PC I/LITER +/- 2 SIGMA COLLECTION PERIOD 114 1N 1S 37 38 01/02/18 - 01/31/18

< 0.6

< 0.6 (1)

< 0.5

< 0.7 02/06/18 - 02/28/18

< 0.4

< 0.4 (1)

< 0.7

< 0.7 03/06/18 - 03/27 /18

< 0.8

< 0.8 (1)

< 0.7

< 0.8 04/02/18 - 04/25/18

< 0.9

< 0.7 (1)

< 0.6

< 0.7 04/30/18 - 05/30/18

< 0.7

< 0.7 (1)

< 0.6

< 0.7 06/05/18 - 06/26/18

< 0.7

< 0.7 (1)

< 0.8

< 0.7 07/03/18 - 07/31/18

< 0.6

< 0.9 (1)

< 0.4

< 0.4 08/06/18 - 08/31/18

< 0.6

< 1.0 (1)

< 0.7

< 0.8 09/05/18 - 09/26/18

< 0.6

< 0.7 (1)

< 0.4

< 0.5 10/01/18 - 11/02/18

< 0.6

< 0.7 (1)

< 0.6

< 0.8 11/05/18 - 11/28/18

< 0.7

< 0.6 (1)

< 0.8

< 0.7 12/04/18 - 01/04/19

< 0.5

< 0.8 (1)

< 0.5

< 0.9 MEAN THE MEAN AND TWO STANDARD DEV/AT/ON ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-3

Table C-11.4 CONCENTRATIONS OF GAMMA EMITTERS IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE PERIOD Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 114 01/03/18 - 01/31/18

< 8

< 7

< 13

<7

< 18

< 7

< 11

< 8

< 8

< 34

< 11 02/07 /18 - 02/28/18

< 7

< 7

< 14

< 7

< 17

< 7

< 13

< 9

< 8

< 34

< 11 03/06/18 - 03/27/18

< 8

< 8

< 15

<6

< 15

<9

< 15

<9

<8

< 39

< 13 04/02/18 - 04/25/18

< 3

< 3

< 10

<5

< 7

<5

<9

<5

<5

< 26

<8 04/30/18 - 05/29/18

< 5

< 5

< 11

<5

< 11

< 5

< 8

< 5

< 5

< 28

< 10 06/06/18 - 06/26/18

< 6

< 7

< 14

< 5

< 12

<8

< 15

<6

<6

< 33

< 14 07/05/18 - 07/31/18

< 6

< 5

< 11

< 5

< 11

< 5

<9

<6

<7

< 29

< 10 08/08/18 - 08/31/18

< 6

< 7

< 14

< 7

< 9

< 6

< 10

<6

<7

< 29

< 13 09/07 /18 - 09/25/18

< 4

< 5

< 10

< 5

< 9

<5

<9

<5

<5

< 29

< 9 10/04/18 - 11/01/18

<8

< 7

< 15

< 9

< 13

< 7

< 13

<9

< 8

< 33

< 12 11/05/18 - 11/26/18

<6

< 5

< 12

<6

< 13

< 6

< 11

<8

<7

< 32

< 8 12/04/18 - 01/02/19

< 6

< 7

< 13

< 8

< 12

< 7

< 13

<5

<6

< 33

< 11 MEAN 1N 01/02/18 - 01/30/18

<7

<8

< 15

<8

< 14

<7

< 13

< 8

< 8

< 34

< 7 02/06/18 - 02/27/18

< 9

<8

< 18

< 10

< 19

< 9

< 13

< 8

< 9

< 32

< 14

()

03/06/18 - 03/27/18

<6

<4

< 10

<5

< 10

<6

< 10

<6

< 5

< 24

<9

.I:,.

04/04/18 - 04/24/18

<4

<5

< 10

<5

< 10

< 5

<8

< 5

< 5

< 29

<8 05/01 /18 - 05/30/18

<4

<5

< 10

<4

<8

< 5

<8

<4

<4

< 32

< 11 06/05/18 - 06/26/18

<2

<2

<5

<2

<4

<2

< 3

< 2

< 2

< 17

<6 07/03/18 - 07/30/18

< 7

<4

< 14

<8

< 13

<6

< 14

< 8

< 7

< 41

< 12 08/06/18 - 08/27/18

<5

<5

< 11

<6

< 10

<6

< 10

<6

< 5

< 32

< 12 09/05/18 - 09/24/18

<4

< 3

<8

<4

< 8

<4

<8

<4

< 4

< 27

< 10 10/01/18 - 11/02/18

<6

< 7

< 13

<4

< 10

< 6

< 11

< 7

< 7

< 39

< 14 11/05/18 - 11/26/18

< 5

< 5

< 15

< 7

< 16

<6

< 12

<5

<7

< 24

< 8 12/04/18 - 01/04/19

< 6

< 5

< 11

< 5

< 12

<5

< 10

<5

<5

< 28

<8 MEAN 1S 01/02/18 - 01/30/18 (1) 02/06/18 - 02/27/18 (1) 03/06/18 - 03/27/18 (1) 04/04/18 - 04/24/18 (1) 05/01/18 - 05/30/18 (1) 06/05/18 - 06/26/18 (1) 07/03/18 - 07/30/18 (1) 08/06/18 - 08/27/18 (1) 09/05/18 - 09/24/18 (1) 10/01/18 - 11/02/18 (1) 11/05/18 - 11/26/18 (1) 12/04/18 - 01/04/19 (1)

MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

Table C-11.4 CONCENTRATIONS OF GAMMA EMITTERS IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE PERIOD Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 37 01/03/18 -

01/31/18

<6

< 7

< 19

< 8

< 15

< 9

< 14

< 8

< 8

< 40

< 12 02/07 /18 -

02/28/18

< 6

<6

< 12

< 8

< 18

< 7

< 14

< 7

< 7

< 32

< 10 03/06/18 -

03/27/18

<7

< 6

< 16

< 5

< 12

<6

< 12

<8

<7

< 25

< 11 04/02/18 -

04/25/18

<4

< 4

<8

< 4

< 8

< 5

<7

<5

<4

< 20

<6 05/02/18 - 05/30/18

< 3

< 3

<6

< 3

<6

< 3

< 5

< 3

<3

< 18

< 7 06/06/18 - 06/26/18

< 7

<6

< 14

<9

< 9

<8

<8

<5

< 9

< 34

< 13 07/03/18 - 07/31/18

< 7

<6

< 14

< 7

< 16

< 6

<9

< 8

< 5

< 32

< 11 08/08/18 - 08/31/18

<7

< 7

< 17

< 9

< 12

< 8

< 13

<7

<7

< 35

< 9 09/07 /18 - 09/25/18

<6

<5

< 13

<6

< 12

<6

< 11

<6

<6

< 29

< 11 10/04/18 - 11/01/18

< 8

<6

< 14

<9

< 10

< 8

< 11

< 9

< 8

< 28

< 9 11/05/18 - 11/26/18

< 5

<6

< 11

<6

< 12

<8

< 12

<7

<6

< 34

< 10 12/04/18 - 01/02/19

<6

< 7

< 11

< 7

< 17

< 5

< 10

<6

<8

< 29

< 13 MEAN 38 01/03/18 - 01/31/18

< 7

< 8

< 16

< 8

< 15

<9

< 14

< 8

< 8

< 28

< 11 02/08/18 -

02/28/18

< 7

< 9

< 13

< 8

< 16

<7

< 14

< 9

< 7

< 35

<7 C) 03/06/18 -

03/27/18

< 8

< 7

< 16

< 8

< 13

<6

< 12

< 7

< 7

< 32

< 12 I 0, 04/03/18 -

04/25/18

< 4

<4

<8

< 5

< 9

<4

<6

< 4

< 4

< 18

< 6 05/02/18 -

05/29/18

<4

< 5

<9

<4

<9

< 5

<8

<4

<4

< 33

< 12 06/08/18 -

06/26/18

<6

<6

<9

<7

< 14

<6

< 10

<6

<8

< 38

< 9 07/05/18 -

07/31/18

< 7

< 6

< 12

< 5

< 16

< 6

< 11

< 7

<7

< 31

< 9 08/08/18 -

08/31/18

< 7

< 9

< 18

< 9

< 19

< 9

< 13

<8

<8

< 38

< 11 09/07 /18 -

09/26/18

< 5

< 6

< 9

<6

< 12

<4

< 12

< 6

< 6

< 30

< 9 10/03/18 -

11/01/18

< 6

< 7

< 16

< 9

< 16

< 7

< 12

< 8

< 6

< 30

< 12 11/05/18 -

11/28/18

<8

<7

< 11

< 9

< 14

< 7

< 12

< 8

<8

< 34

< 9 12/06/18 - 01/02/19

< 9

<9

< 17

< 10

< 17

<9

< 15

< 9

< 8

< 38

< 12 MEAN

Table C-111.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD MW-24-3A W-3C 01/22/18 - 01/22/18

< 195

< 195 04/23/18 - 04/23/18

< 188

< 185 08/02/18 - 08/02/18

< 198

< 191 10/31/18 - 10/31/18

< 193

< 188 MEAN C-6

Table C-111.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE PERIOD Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 MW-24-3A 01/22/18 - 01/22/18

<4

< 5

< 14

< 6

< 12

< 6

< 9

< 7

< 6

< 6

< 22

< 8 04/23/18 - 04/23/18

<4

< 4

< 8

< 4

< 7

< 4

< 6

< 4

< 4

< 4

< 15

< 4 08/02/18 - 08/02/18

<6

< 7

< 16

< 8

< 15

< 8

< 11

< 13

< 9

< 7

< 38

< 12 10/31/18 - 10/31/18

< 7

< 8

< 16

< 9

< 11

< 7

< 14

< 12

< 9

< 6

< 28

< 10 MEAN W-3C 01/22/18 - 01/22/18

< 5

< 7

< 10

< 7

< 16

< 7

< 11

< 7

< 6

< 6

< 29

< 5 04/23/18 - 04/23/18

< 6

< 6

< 11

< 5

< 10

< 5

< 10

< 6

< 6

< 5

< 23

< 8 08/02/18 - 08/02/18

< 5

< 7

< 12

< 6

< 8

< 6

< 11

< 11

< 6

< 5

< 29

< 8 10/31/18 - 10/31/18

<8

< 8

< 16

< 7

< 18

< 11

< 15

< 14

< 9

< 7

< 40

< 13 C)

MEAN I....

Table C-IV.1 CONCENTRATIONS OF GAMMA EMITTERS IN PREDATOR AND BOTTOM FEEDER (FISH)

SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/KG WET+/- 2 SIGMA COLLECTION SITE PERIOD K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Cs-134 Cs-137 33 BOTTOM FEEDER 10/15/18 3763 +/- 916

< 56

< 47

< 141

< 61

< 110

< 54

< 52 MEAN+/- 2 STD DEV 3763 + 0 93 PREDATOR 05/15/18 3513 +/- 886

< 30

< 51

< 127

< 62

< 104

< 47

< 47 05/15/18 4166 +/- 1091

< 73

< 63

< 119

< 51

< 104

< 73

< 52 10/15/18 4301 +/- 1084

< 48

< 74

< 136

< 75

< 126

< 65

< 70 10/15/18 4007 +/- 1208

< 75

< 65

< 127

< 64

< 145

< 98

< 78 MEAN+/- 2 STD DEV 3997 + 688 0

94 I

CIO PREDATOR 05/16/18 4100 +/- 862

< 48

< 55

< 134

< 50

< 117

< 63

< 51 05/16/18 3755 +/- 966

< 62

< 49

< 94

< 58

< 113

< 60

< 68 05/16/18 2732 +/- 879

< 59

< 64

< 125

< 62

< 86

< 46

< 59 MEAN+/- 2 STD DEV 3529 + 1423 94 BOTTOM FEEDER 05/16/18 3474 +/- 1065

< 69

< 70

< 72

< 59

< 154

< 71

< 48 05/16/18 4245 +/- 785

< 47

< 58

< 104

< 68

< 112

< 58

< 37 05/16/18 2475 +/- 687

< 36

< 46

< 93

< 54

< 77

< 37

< 43 MEAN+/- 2 STD DEV 3398 +/- 1775 THE MEAN AND TWO STANDARD DEV/AT/ON ARE CALCULATED USING THE POSITIVE VALUES

Table C-IV.2 CONCENTRATIONS OF GAMMA EMITTERS IN CLAM AND CRAB SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/KG WET+/- 2 SIGMA COLLECTION SITE PERIOD K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Cs-134 Cs-137 23 Clams 05/14/18 1118 +/- 551

< 43

< 45

< 91

< 45

< 102

< 46

< 42 10/16/18 1258 +/- 742

< 68

< 49

< 104

< 54

< 152

< 59

< 51 MEAN 1188 + 198 24 Clams 05/14/18 1294 +/- 534

< 42

< 46

< 106

< 44

< 84

< 49

< 35 10/16/18 1900 +/- 871

< 72

< 53

< 171

< 64

< 144

< 69

< 66 MEAN 1597 +/- 857 C) 33 I

Crabs 10/15/18 1329 +/- 833

< 64

< 40

< 130

< 61

< 149

< 66

< 45 (0

MEAN 1329 +/- 0 93 Crabs 10/15/18 1840 +/- 806

< 63

< 84

< 139

< 80

< 145

< 58

< 61 MEAN 1840 +/- 0 94 Crabs 05/16/18 1326 +/- 647

< 44

< 43

< 87

< 53

< 108

< 54

< 47 10/18/18 1776 +/- 516

< 41

< 37

< 99

< 49

< 81

< 51

< 44 MEAN 1551 +/- 636 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES

Table C-V.1 CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/KG DRY+/- 2 SIGMA COLLECTION SITE PERIOD Be-7 K-40 Mn-54 Co-58 Co-60 Cs-134 Cs-137 Ra-226 Th-228 23 05/14/18

< 386 2850 +/- 630

< 35

< 32

< 48

< 44

< 36 905 +/- 791 203 +/- 66 10/16/18 547 +/- 351 7518 +/- 879

< 44

< 45

< 53

< 52

< 45

< 934 498 +/- 70 MEAN +/- 2 STD DEV 547 +/- 0 5184 +/- 6602 905 +/- 0 351 +/- 416 24 05/14/18

< 330 3571 +/- 825

< 46

< 45

< 47

< 54

< 42 1458 +/- 924 346 +/- 67 10/15/18

< 574 11940 +/- 1301

< 68

< 64

< 65

< 73

< 64

< 1570 733 +/- 102 MEAN+/- 2 STD DEV

- 7756 +/- 11836 1458 +/- 0 539 +/- 547 33 05/14/18

< 511 2195 +/- 733

< 53

< 52

< 47

< 51

< 62

< 1272 263 +/- 91 10/15/18

< 281 2598 +/- 522

< 35

< 29

< 34

< 43

< 37 983 +/- 748 204 +/- 59 C)

I.....

MEAN+/- 2 STD DEV 2397 +/- 570 0

983 +/- 0 233 +/- 83 94 05/16/18

< 450 13140 +/- 1418

< 53

< 59

< 64

< 68

< 72 1188 +/- 679 438 +/- 123 10/16/18

< 571 17160 +/- 1531

< 62

< 67

< 68

< 82

< 63

< 1266 946 +/- 104 MEAN+/- 2 STD DEV 15150 +/- 5685 1188 +/- 0 692 +/- 719 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES

Table C-Vl.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA COLLECTION GROUP I GROUP II GROUP Ill PERIOD 20 66 111 71 72 12/27/17 - 01/03/18 19 +/- 5 13 +/- 5 14 +/- 4 13 +/- 5 12 +/- 4 01/03/18 - 01/11/18 (1) 13 +/- 4 13 +/- 4 12 +/- 4 13 +/- 4 01/11/18 - 01/18/18 13 +/- 4 16 +/- 4 10 +/- 4 10 +/- 4 13 +/- 4 01/18/18 - 01/24/18 19 +/- 5 15 +/- 5 19 +/- 5 23 +/- 6 21 +/-6 01/24/18 - 01/31/18 12 +/- 4 13 +/- 4 8 +/- 4 12 +/- 4 11 +/- 4 01/31/18 - 02/08/18 7 +/- 4 9 +/- 4 11 +/- 4 10 +/- 4 10 +/- 4 02/08/18 - 02/15/18 17 +/- 5 17 +/- 5 12 +/- 4 14 +/- 4 13 +/- 4 02/15/18 - 02/22/18 10 +/- 4 18 +/- 5 10 +/- 4 13 +/- 4 11 +/- 4 02/22/18 - 02/28/18

< 8

< 8

< 8 9 +/- 5 9 +/- 5 02/28/18 - 03/06/18 9 +/- 5 9 +/- 5

< 7 12 +/- 5 10 +/- 5 03/06/18 - 03/14/18 8 +/- 4 6 +/- 4

<6

< 5 5 +/- 4 03/14/18 - 03/20/18 20 +/- 6 20 +/- 6 16 +/- 6 27 +/- 8 20 +/- 5 03/20/18 - 03/28/18 10 +/- 4 10 +/- 4 10 +/- 4 6 +/- 4 8 +/- 4 03/28/18 - 04/04/18 10 +/- 4 13 +/- 4 9 +/- 4 9+/-4 9 +/- 4 04/04/18 - 04/11/18 17 +/- 5 14 +/- 4 11 +/- 4 15 +/- 5 14 +/- 4 04/11/18 - 04/18/18 9 +/- 4 13 +/- 4 10 +/- 4 11 +/- 4 8 +/- 4 04/18/18 - 04/25/18 13 +/- 5 11 +/- 4 9 +/- 4 19 +/- 5 11 +/- 4 04/25/18 - 05/02/18 12 +/- 4 15 +/- 5 9 +/- 4 9 +/- 4 10 +/- 4 05/02/18 - 05/08/18 18 +/- 6 25 +/- 6 20 +/- 6 22 +/- 6 25 +/- 6 05/08/18 - 05/16/18 12 +/- 4 8 +/- 4 13 +/- 4 12 +/- 4 11 +/- 4 05/16/18 - 05/22/18 8 +/- 5 10 +/- 5 7 +/- 5 7 +/- 4

<6 05/22/18 - 05/30/18 7 +/- 4 8 +/- 4 9 +/- 4 7 +/- 4 8+/-4 05/30/18 - 06/05/18 9 +/- 5 8 +/- 5 10 +/- 5 13 +/- 5 8+/-4 06/05/18 - 06/13/18 9 +/- 4 11 +/- 4 8 +/- 4 8 +/- 4 7 +/- 3 06/13/18 - 06/20/18 10 +/- 4 13 +/- 4 10 +/- 4 10 +/- 4 11 +/- 4 06/20/18 - 06/26/18 9 +/- 5 10 +/- 5 10 +/- 5 9 +/- 5 12 +/- 5 06/26/18 - 07/03/18 14 +/- 5 18 +/- 5 17 +/- 5 20 +/- 5 14 +/- 4 07/03/18 - 07/11/18 13 +/- 5 (1) 9 +/- 4 10 +/- 4 15 +/- 4 07/11/18 - 07/19/18 18 +/- 4 16 +/- 4 16 +/- 4 12 +/- 4 19 +/- 4 07/19/18 - 07/26/18

< 6 6+/-4 8 +/- 4 6+/-4 8 +/- 4 07/26/18 - 08/01/18 12 +/- 5 12 +/- 5 13 +/- 5 10 +/- 5 12 +/- 5 08/01/18 - 08/07/18 20 +/- 6 14 +/- 5 18 +/- 6 20 +/- 6 18 +/- 5 08/07/18 - 08/14/18 22 +/- 5 15 +/- 4 18 +/- 5 16 +/- 4 (1) 08/14/18 - 08/21/18 17 +/- 5 15 +/- 5 18 +/- 5 20 +/- 5 14 +/- 5 08/21/18 - 08/29/18 19 +/- 5 13 +/- 5 15 +/- 5 16 +/- 5 15 +/- 4 08/28/18 - 09/05/18 23 +/- 5 26 +/- 5 16 +/- 4 18 +/-4 21 +/- 4 09/05/18 - 09/11/18 14 +/- 6 18 +/- 6 13 +/- 6 11 +/- 5 10 +/- 5 09/11/18 - 09/18/18 7 +/- 4

< 6

< 6

<6 9 +/- 4 09/18/18 - 09/26/18 11 +/- 4 11 +/- 4 8 +/- 4 8 +/- 4 7 +/- 3 09/26/18 - 10/03/18 15 +/- 5 12 +/- 5 11 +/- 5 12 +/- 5 14 +/- 5 10/03/18 - 10/11/18 16 +/- 4 14 +/- 4 16

+/-4 14 +/- 4 14 +/- 4 10/11/18 - 10/17/18 7 +/- 5 8 +/- 5 8 +/- 5

<7 9 +/- 5 10/17/18 - 10/24/18 15 +/- 5 14 +/- 4 16 +/- 5 14 +/- 4 13 +/- 4 10/24/18 - 10/31/18 11 +/- 4 9 +/- 4 9 +/- 4 12 +/- 4 10 +/- 4 10/31/18 - 11/07/18 11 +/- 5 12 +/- 5 12 +/- 5 10 +/- 5 9 +/- 4 11/07/18 - 11/14/18 16 +/- 5 17 +/- 5 12 +/- 4 9 +/- 4 14 +/- 4 11/14/18 - 11/20/18 12 +/- 6 10 +/- 5 14 +/- 6 9 +/- 5 10 +/- 5 11/20/18 - 11/28/18

< 9 14 +/- 4 12 +/- 4 11 +/- 4 13 +/- 4 11/28/18 - 12/06/18 (1) 11 +/- 4 11 +/- 4 6+/-3 9 +/- 4 12/06/18 - 12/12/18 (1) 17 +/- 6 21 +/- 6 28 +/- 6 21 +/- 6 12/12/18 - 12/19/18 (1) 18 +/- 5 22 +/- 5 10 +/- 5 14 +/- 5 12/19/18 - 12/27/18 15 +/- 4 12 +/- 4 11 +/- 4 14 +/- 4 15 +/- 4 12/27/18 - 01/02/19 (1) 10 +/- 5 9 +/- 5 11 +/- 5 13 +/- 5 MEAN+/- 2 STD DEV 13 +/- 9 13 +/- 8 12 +/- 8 13 +/- 10 12 +/- 8 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-11 73 3

C 14 +/- 5 11 +/-4 11 +/- 4 (1) 16 +/- 4 13 +/- 4 11 +/- 4 9 +/- 4 16 +/- 4 15 +/- 5 21 +/- 5 26 +/- 6 12 +/- 4 11 +/- 4 9 +/- 4 8 +/- 4 9+/-4 12 +/- 4 15 +/- 4 10 +/- 4 15 +/- 4 9 +/- 4 10 +/- 4 12 +/- 4 8 +/- 5

< 7

< 8 (1) 9+/-5 12 +/- 6 (1)

<5

< 6 18 +/- 6 20 +/- 6 23 +/- 6 7 +/- 4 8 +/- 4 9 +/- 4 13 +/- 4 8 +/- 4 10 +/- 4 14 +/- 5 12 +/- 4 15 +/- 5 10 +/- 4 13 +/- 4 11 +/- 4 15 +/- 5 11 +/- 4 13 +/- 4 12 +/- 4 9 +/- 4 13 +/- 4 12 +/- 5 16 +/- 5 27 +/- 6 6 +/- 4 13 +/- 5 15 +/- 4 8 +/- 5

< 6 7 +/- 5

<6 11 +/- 4 9 +/- 4

< 7 8 +/- 5 7 +/- 5 10 +/- 4 7 +/- 3 10 +/- 4 8 +/- 4 7 +/- 4 11 +/- 4 10 +/- 5

< 6 12 +/- 5 16 +/- 5 13 +/- 4 17 +/- 5 10 +/- 4 13 +/- 4 13 +/- 4 12 +/- 4 9 +/- 4 16 +/- 4 9 +/- 4 7+/-4 7 +/- 4 11 +/- 5 8 +/- 4 14 +/- 5 16 +/- 5 13 +/- 5 18 +/- 6 11 +/- 4 13 +/- 4 19 +/- 5 12 +/- 5 19 +/- 5 18 +/- 5 12 +/- 5 15 +/- 5 18 +/- 4 19 +/- 5 16 +/- 4 21 +/- 5 12 +/- 6 11 +/- 5 11 +/- 6 7 +/- 4 6+/-4 8+/-4 10 +/- 4 8+/-3 9+/-4 8 +/- 5 11 +/- 4 13 +/- 5 15 +/- 4 9 +/- 3 16 +/- 4 10 +/- 5 9 +/- 5 13 +/- 5 12 +/- 4 12 +/- 4 14 +/- 5 9 +/- 4 10 +/- 4 13 +/- 4 13 +/- 5 8+/-4 12 +/- 5 13 +/- 5 12 +/- 4 15 +/- 5 12 +/- 6 14 +/- 5 13 +/- 5 8+/-4 17 +/- 4 17 +/- 4 12 +/- 4 8+/-4 8 +/- 4 18 +/- 6 25 +/- 6 21 +/- 6 16 +/- 5 15 +/- 5 18 +/- 5 13 +/- 4 13 +/- 4 13 +/- 4 8 +/- 5 10 +/- 5 7 +/- 5 12 +/- 6 12 +/- 8 14 +/- 9

Table C-Vl.2 MONTHLY AND YEARLY MEAN VALUES OF GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF E-3 PCI/CU METER+/- 2 SIGMA GROUP I - ON-SITE LOCATIONS GROUP II - INTERMEDIATE DISTANCE LOCATIONS GROUP Ill - CONTROL LOCATIONS COLLECTION MEAN COLLECTION MEAN COLLECTION MEAN PERIOD MIN MAX

+/-2SD PERIOD MIN MAX

+/-2SD PERIOD MIN MAX

+/-2SD 01/03/18 - 01/31/18 8

19 14 +/- 6 01/03/18 - 01/31/18 10 23 14 +/- 9 01/03/18 - 01/31/18 9

26 15 +/- 12 01/31/18 - 02/22/18 7

18 12 +/- 8 01/31/18 - 02/28/18 8

15 11 +/- 5 01/31/18 - 02/22/18 9

15 11 +/- 5 02/28/18 - 04/04/18 6

20 12 +/- 9 02/28/18 - 04/04/18 5

27 12 +/- 13 02/28/18 - 04/04/18 8

23 12 +/- 12 04/04/18 - 05/02/18 9

17 12 +/- 5 04/04/18 - 05/02/18 8

19 12 +/- 6 04/04/18 - 05/02/18 9

15 12 +/- 4 05/02/18 - 05/30/18 7

25 12 +/- 12 05/02/18 - 05/30/18 6

25 12 +/- 13 05/02/18 - 05/30/18 7

27 14 +/- 13 05/30/18 - 07/03/18 8

18 11 +/- 6 05/30/18 - 07 /03/18 7

20 11 +/- 8 05/30/18 - 07 /03/18 7

17 10 +/- 6 07/03/18 - 08/01/18 6

18 12 +/- 8 07/03/18 - 08/01/18 6

19 11 +/- 7 07/03/18 - 08/01/18 7

16 11 +/- 7 08/01/18 - 08/28/18 13 22 17 +/- 5 08/01/18 - 08/28/18 11 20 15 +/- 6 08/01 /18 - 08/29/18 13 19 17 +/- 5 C) 08/28/18 - 10/03/18 7

26 14 +/- 11 08/28/18 - 10/03/18 7

21 12 +/- 9 08/28/18 - 1 0/03/18 6

21 11 +/- 9 I

10/03/18 - 10/31/18 7

16 12 +/- 7 10/03/18 - 10/31/18 9

15 12 +/- 4 10/03/18 - 10/31/18 9

16 12 +/- 4 IIJ 10/31/18 - 11/28/18 10 17 13 +/- 4 10/31/18 - 11/28/18 8

14 11 +/- 4 10/31/18 - 11/28/18 8

17 14 +/- 6 12/27/17 - 01/02/19 9

22 14 +/- 8 12/27/17 - 01/02/19 6

28 14 +/- 10 12/27/17 - 01/02/19 7

25 13 +/- 11 12/27/17 - 01/02/19 6

26 13 +/- 8 12/27/17 - 01/02/19 5

28 12 +/- 8 12/27/17 - 01/02/19 6

27 13 +/- 9

Table C-Vl.3 CONCENTRATIONS OF STRONTIUM IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF E-3 PCI/CU METER+/- 2 SIGMA COLLECTION SITE PERIOD SR-89 SR-90 3

01/03/18 - 03/28/18

<6

< 5 03/28/18 - 07/03/18

<4

<4 07/03/18 - 10/03/18

<6

<4 10/03/18 - 01/02/19

<5

<7 MEAN 20 01/11/18 - 03/28/18

< 8

<6 03/28/18 - 07 /03/18

<5

<4 07 /03/18 - 10/03/18

<6

<3 10/03/18 - 12/27 /18

<9

< 8 MEAN 66 01/03/18 - 03/28/18

<6

<4 03/28/18 - 07/03/18

<5

< 5 07/11/18 - 10/03/18

<7

<4 10/03/18 - 01/02/19

<5

< 5 MEAN 71 01/03/18 - 03/28/18

<6

<5 03/28/18 - 07/03/18

<5

<4 07 /03/18 - 10/03/18

<5

<3 10/03/18 - 01/02/19

<7

< 9 MEAN 72 01/03/18 - 03/28/18

<5

<5 03/28/18 - 07/03/18

<6

<7 07/03/18 -

10/03/18

<6

<4 10/03/18 -

01/02/19

<7

< 10 MEAN 73 01/11/18 - 03/28/18

<9

<7 03/28/18 - 07/03/18

<6

<7 07/03/18 -

10/03/18

<6

<3 10/03/18 -

01/02/19

<6

<6 MEAN 111 01/03/18 - 03/28/18

<6

<6 03/28/18 - 07/03/18

<5

<5 07/03/18 -

10/03/18

<7

<4 10/03/18 - 01/02/19

<6

< 5 MEAN C

01/03/18 - 03/28/18

< 6

<5 03/28/18 - 07 /03/18

<6

<5 07 /03/18 - 10/03/18

<6

<3 10/03/18 - 01/02/19

<6

<9 MEAN C-13

Table C-Vl.4 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RES UL TS IN UNITS OF E-3 PCI/CU METER+/- 2 SIGMA COLLECTION SITE PERIOD Be-7 Mn-54 Co-58 Co-60 Cs-134 Cs-137 3

01/03/18 - 03/28/18 64 +/- 21

<2

< 3

< 2

<2

<2 03/28/18 - 07 /03/18 56 +/- 19

< 3

<2

<4

< 2

<3 07 /03/18 - 10/03/18 66 +/- 19

< 3

< 3

<4

< 3

<2 10/03/18 - 01/02/19 31 +/- 16

<2

<2

<3

< 3

<2 MEAN +/- 2 STD DEV 54 +/- 32 20 01/11/18 - 03/28/18 46 +/- 26

< 3

<4

< 3

<2

<2 03/28/18 - 07 /03/18 85 +/- 19

< 3

< 3

<2

<2

<2 07 /03/18 - 10/03/18 67 +/- 22

<4

<4

<3

< 3

<3 10/03/18 - 12/27 /18 52 +/- 26

< 3

<2

<4

<4

<3 MEAN+/- 2 STD DEV 63 +/- 35 66 01 /03/18 - 03/28/18 89 +/- 43

<3

< 3

<3

<2

<2 03/28/18 - 07 /03/18 70 +/- 15

<2

<2

<3

<2

<2 07 /11 /18 - 10/03/18 79 +/- 24

<3

<3

<5

< 1

<3 10/03/18 - 01/02/19 50 +/- 17

<3

<3

<3

<3

<3 MEAN +/- 2 STD DEV 72 +/- 34 71 01 /03/18 - 03/28/18 65 +/- 16

< 1

<2

<2

<2

< 1 03/28/18 - 07 /03/18 44 +/- 18

<2

<3

<2

<3

<2 07 /03/18 - 10/03/18 65 +/- 29

<4

<3

<4

<3

<3 10/03/18 - 01/02/19 48 +/- 14

<3

<2

<3

<3

< 3 MEAN +/- 2 STD DEV 56 +/- 22 72 01/03/18 - 03/28/18 59 +/- 27

< 3

< 3

<2

<3

<2 03/28/18 - 07 /03/18 72 +/- 18

<2

<2

< 3

<2

<2 07 /03/18 - 10/03/18 75 +/- 24

<2

< 3

<4

< 3

<3 10/03/18 - 01/02/19 49 +/- 16

<2

<3

<3

<2

<2 MEAN +/- 2 STD DEV 64 +/- 25 73 01/11/18 - 03/28/18 80 +/- 36

<5

< 5

<3

<4

<3 03/28/18 - 07 /03/18 50 +/- 25

<2

< 3

<3

<3

<3 07/03/18 - 10/03/18 41 +/- 28

<4

<2

<4

<3

<2 10/03/18 - 01/02/19 38 +/- 17

<3

<3

<3

<3

<3 MEAN +/- 2 STD DEV 52 +/- 39 111 01/03/18 - 03/28/18 46 +/- 25

<2

<2

<4

<2

<2 03/28/18 - 07 /03/18 51 +/- 13

< 1

<2

<2

<2

<2 07 /03/18 - 10/03/18 66 +/- 22

< 3

<4

<4

<4

<2 10/03/18 - 01/02/19 47 +/- 19

< 1

<2

<2

<2

<2 MEAN+/- 2 STD DEV 52 +/- 18 C

01/03/18 - 03/28/18 86 +/- 35

<4

<4

<3

<4

<4 03/28/18 - 07 /03/18 72 +/- 19

<2

<2

<2

<2

<2 07 /03/18 - 10/03/18 77 +/- 26

<2

<3

<5

<3

<3 10/03/18 - 01/02/19 42 +/- 18

<2

<3

<2

<3

< 3 MEAN +/- 2 STD DEV 69 +/- 38 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES C-14

Table C-Vll.1 CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF E-3 PCI/CU METER+/- 2 SIGMA COLLECTION GROUP I I

GROUP II I

GROUP Ill PERIOD 20 66 111 71 72 73 3

C 12/27/17 - 01/03/18

< 52

< 56

< 51

< 22

< 26

< 53

< 31

< 31 01/03/18 - 01/11/18 (1)

< 40

< 16

< 40

< 40 (1)

< 31

< 31 01/11/18 - 01/18/18

< 49

< 50

< 48

< 21

< 24

< 50

< 25

< 20 01/18/18 - 01/24/18

< 33

< 34

< 32

< 19

< 40

< 34

< 38

< 16 01/24/18 - 01/31/18

< 37

< 37

< 36

< 15

< 24

< 37

< 30

< 30 01/31/18 - 02/08/18

< 42

< 43

< 41

< 18

< 17

< 43

< 20

< 20 02/08/18 - 02/15/18

< 43

< 43

< 17

< 43

< 23

< 43

< 29

< 28 02/15/18 - 02/22/18

< 35

< 35

< 34

< 15

< 18

< 36

< 21

< 21 02/22/18 - 02/28/18

< 53

< 52

< 52

< 21

< 31

< 53

< 38

< 41 02/28/18 - 03/06/18

< 40

< 39

< 39

< 16

< 37 (1)

< 20

< 26 03/06/18 - 03/14/18

< 47

< 47

< 46

< 19

< 25 (1)

< 25

< 27 03/14/18 - 03/20/18

< 37

< 35

< 36

< 22

< 22

< 36

< 22

< 24 03/20/18 - 03/28/18

< 43

< 41

< 42

< 21

< 14

< 42

< 25

< 26 03/28/18 - 04/04/18

< 31

< 29

< 30

< 12

< 21

< 30

< 25

< 26 04/04/18 - 04/11 /18

< 26

< 25

< 25

< 10

< 20

< 25

< 46

< 50 04/11 /18 - 04/18/18

< 40

< 39

< 39

< 14

< 18

< 40

< 42

< 45 04/18/18 - 04/25/18

< 39

< 37

< 38

< 31

< 35

< 38

< 25

< 62 04/25/18 - 05/02/18

< 54

< 52

< 53

< 43

< 27

< 53

< 64

< 68 05/02/18 - 05/08/18

< 66

< 63

< 64

< 28

< 23

< 65

< 44

< 49 05/08/18 - 05/16/18

< 31

< 26

< 26

< 26

< 29

< 27

< 42

. < 31 05/16/18 - 05/22/18

< 53

< 42

< 43

< 41

< 48

< 43

< 49

< 53 05/22/18 - 05/30/18

< 23

< 13

< 14

< 13

< 21

< 14

< 21

< 22 05/30/18 - 06/05/18

< 39

< 22

< 22

< 22

< 15

< 23

< 36

< 39 06/05/18 - 06/13/18

< 52

< 27

< 27

< 22

< 48

< 28

< 20

< 39 06/13/18 - 06/20/18

< 33

< 45

< 47

< 45

< 30

< 46

< 26

< 32 06/20/18 - 06/26/18

< 38

< 27

< 28

< 27

< 35

< 28

< 36

< 40 06/26/18 - 07/03/18

< 67

< 66

< 67

< 65

< 61

< 68

< 62

< 67 07/03/18 - 07/11/18

< 25 (1)

< 24

< 20

< 23

< 24

< 12

< 29 07/11/18 - 07/19/18

< 22

< 14

< 14

< 14

< 20

< 14

< 21

< 22 07 /19/18 - 07 /26/18

< 42

< 29

< 30

< 29

< 16

< 30

< 39

< 44 07/26/18 - 08/01/18

< 67

< 66

< 68

< 66

< 61

< 69

< 62

< 67 08/01 /18 - 08/07 /18

< 48

< 44

< 44

< 43

< 44

< 45

< 46

< 48 08/07 /18 - 08/14/18

< 60

< 58

< 59

< 24 (1)

< 60

< 18

< 47 08/14/18 - 08/21 /18

< 63

< 53

< 54

< 53

< 25

< 54

< 58

< 63 08/21 /18 - 08/29/18

< 44

< 20

< 20

< 20

< 40

< 20

< 41

< 35 08/28/18 - 09/05/18

< 49

< 47

< 48

< 47

< 45

< 48

< 46

< 56 09/05/18 - 09/11 /18

< 44

< 67

< 68

< 66

< 41

< 69

< 41

< 44 09/11 /18 - 09/18/18

< 33

< 38

< 39

< 38

< 30

< 39

< 30

< 33 09/18/18 - 09/26/18

< 52

< 53

< 54

< 53

< 48

< 55

< 48

< 52 09/26/18 - 10/03/18

< 37

< 67

< 68

< 66

< 28

< 68

< 34

< 37 10/03/18 - 10/11/18

< 38

< 36

< 37

< 30

< 43

< 37

< 17

< 44 10/11/18 - 10/17/18

< 68

< 38

< 39

< 38

< 63

< 39

< 63

< 67 10/17/18 - 10/24/18

< 29

< 59

< 60

< 59

< 22

< 61

< 28

< 53 10/24/18 - 10/31/18

< 56

< 38

< 39

< 37

< 22

< 39

< 52

< 41 10/31/18 - 11/07/18

< 37

< 38

< 39

< 38

< 34

< 40

< 34

< 37 11/07/18 - 11/14/18

< 20

< 13

< 13

< 13

< 18

< 13

< 18

< 20 11 /14/18 - 11 /20/18

< 65

< 58

< 64

< 24

< 60

< 59

< 58

< 49 11/20/18 - 11/28/18

< 50

< 24

< 24

< 24

< 24

< 25

< 11

< 31 11/28/18 - 12/06/18 (1)

< 36

< 37

< 15

< 35

< 37

< 14

< 37 12/06/18 - 12/12/18 (1)

< 51

< 52

< 42

< 48

< 52

< 39

< 42 12/12/18 - 12/19/18 (1)

< 63

< 65

< 34

< 60

< 65

< 10

< 30 12/19/18 - 12/27/18

< 49

< 47

< 48

< 20

< 32

< 49

< 33

< 35 12/27/18 - 01/02/19 (1)

< 29

< 30

< 24

< 28

< 30

< 20

< 51 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-15

Table C-Vlll.1 CONCENTRATIONS OF STRONTIUM AND GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/KG WET+/- 2 SIGMA COLLECTION SITE PERIOD Sr-89 Sr-90 Be-7 K-40 1-131 Cs-134 Cs-137 Ba-140 La-140 115 Cabbage 06127118

< 14 3.6 +/- 0.7

< 230 2933 +/- 513

< 47

< 31

< 30

< 123

< 34 Collards 06127/18

< 13 2.0 +/- 0.5

< 300 3948 +/- 665

< 46

< 35

< 33

< 153

< 45 Kale 06/27/18

< 14 3.7 +/- 0.6

< 283 4505 +/- 750

< 52

< 32

< 37

< 162

< 50 Cabbage 07/24/18

< 15 11.2 +/- 1.6 283 +/- 273 2476 +/- 467

< 58

< 26

< 36

< 160

< 34 Collards 07/24/18

< 14 1.4 +/- 0.9

< 304 5263 +/- 645

< 56

< 28

< 34

< 153

< 30 Kale 07/24/18

< 10 4.6 +/- 1.1

< 241 4446 +/- 575

< 45

< 27

< 33

< 140

< 37 Cabbage 08/29118

< 16 12.8 +/- 3.0

< 253 2285 +/- 448

< 43

< 24

< 25

< 122

< 39 Collards 08/29/18

< 19 13.5 +/- 3.0

< 274 3699 +/- 565

< 57

< 29

< 30

< 136

< 40 Kale 08129/18

< 11 3.4 +/- 1.8

< 295 3944 +/- 585

< 48

< 31

< 33

< 116

< 40 Collards 09/19/18

< 11 4.9 +/- 2.1 580 +/- 214 3768 +/- 561

< 58

< 25

< 30

< 135

< 35 Kale 09/19/18

< 25 8.3 +/- 2.1 689 +/- 243 3115+/-529

< 57

< 31

< 37

< 153

< 59 Cabbage 10/22/18

< 19

< 4.2 445 +/- 158 3203 +/- 318

< 60

< 11

< 10

< 110

< 23 Collards 10/22/18

< 19 2.4 +/- 1.3 424 +/- 165 4188 +/- 395

< 57

< 17

< 18

< 108

< 33 Kale 10/22118

< 13

< 2.0 421 +/- 158 4401 +/- 390

< 47

< 15

< 20

< 118

< 26 0

Cabbage 11/12118

< 12 2.6 +/- 1.7 586 +/- 132 3501 +/- 237

< 39

< 14

< 13

< 89

< 24 I

Collards 11/12118

< 11 3.7 +/- 1.6 772 +/- 90 4869 +/- 202

< 26 9

9

< 57

< 16 en Kale 11/12/18

< 11

< 2.1 685 +/- 184 4421 +/- 480

< 52

< 17

< 20

< 118

< 25 MEAN+/- 2 STD DEV 5.6 +/- 8.2 543 +/- 318 3821 +/- 1647 35 Cabbage 06/27/18

< 11

< 0.9

< 229 3195 +/- 509

< 54

< 25

< 30

< 119

< 45 Collards 06/27/18

< 14 3.4 +/- 0.6

< 360 4178 +/- 782

< 58

< 34

< 39

< 209

< 54 Kale 06127118

< 14 5.9 +/- 0.7

< 317 4004 +/- 706

< 60

< 39

< 34

< 161

< 58 Cabbage 07124/18

< 14 2.3 +/- 1.2

< 232 2507 +/- 491

< 47

< 23

< 27

< 108

< 32 Collards 07/24/18

< 12

< 1.6 203 +/- 191 4220 +/- 616

< 42

< 30

< 26

< 149

< 52 Kale 07/24/18

< 11

< 1.4

< 298 4387 +/- 602

< 52

< 27

< 26

< 140

< 31 Cabbage 08/29/18

< 17

< 3.6

< 179 1311 +/- 388

< 41

< 26

< 24

< 99

< 33 Collards 08/29/18

< 18

< 3.5 463 +/- 285 4694 +/- 625

< 51

< 36

< 38

< 153

< 41 Kale 08/29/18

< 14

< 3.4

< 310 3965 +/- 566

< 43

< 34

< 33

< 136

< 40 Collards 09/19/18

< 22 4.2 +/- 1.9 515 +/- 217 3479 +/- 548

< 49

< 30

< 28

< 125

< 41 Kale 09/19/18

< 14 3.3 +/- 1.8 419 +/- 319 4397 +/- 654

< 32

< 25

< 19

< 101

< 16 Collards 10/22/18

< 16

< 3.7 710 +/- 161 5539 +/- 364

< 57

< 11

< 11

< 110

< 30 Kale 10/22/18

< 25

< 3.8 649 +/- 211 4625 +/- 411

< 55

< 14

< 12

< 99

< 24 Collards 11/12/18

< 11

< 1.9 374 +/- 136 5234 +/- 322

< 43

< 15

< 15

< 94

< 27 Kale 11/12/18

< 15

< 4.0 388 +/- 98 5635 +/- 266

< 40

< 14

< 13

< 88

< 22 MEAN+/- 2 STD DEV 3.8 +/- 2.7 465 +/- 322 4091 +/- 2273 THE MEAN AND TWO STANDARD DEV/A TION ARE CALCULATED USING THE POSITIVE VALUES

Table C-Vlll.1 CONCENTRATIONS OF STRONTIUM AND GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/KG WET+/- 2 SIGMA COLLECTION SITE PERIOD Sr-89 Sr-90 Be-7 K-40 1-131 Cs-134 Cs-137 Ba-140 La-140 Control 36 Cabbage 06/27/18

< 12 3.9 +/- 0.7

< 270 3401 +/- 579

< 43

< 26

< 31

< 115

< 55 Collards 06/27/18

< 13 4.0 +/- 0.6

< 234 4418 +/- 614

< 46

< 31

< 30

< 145

< 18 Kale 06/27/18

< 12

< 0.9

< 257 4375 +/- 677

< 48

< 26

< 24

< 146

< 40 Cabbage 07124/18

< 12

< 1.6

< 170 2215 +/- 348

< 36

< 19

< 14

< 84

< 22 Collards 07/24/18

< 10

< 1.5

< 217 3714 +/- 488

< 51

< 28

< 24

< 121

< 38 Kale 07/24/18

< 12 1.7 +/- 1.1 352 +/- 187 3850 +/- 571

< 37

< 26

< 29

< 104

< 31 Cabbage 08129/18

< 11

< 3.2

< 231 2246 +/- 518

< 48

< 26

< 28

< 132

< 31 Rape 09119/18

< 21

< 4.3

< 334 3516 +/- 487

< 53

< 31

< 25

< 137

< 37 Collards 09/19/18

< 19 1.3 +/- 0.8 399 +/- 191 3772 +/- 672

< 58

< 32

< 25

< 127

< 39 Kale 09/19/18

< 21

< 4.4 273 +/- 239 3909 +/- 580

< 58

< 29

< 28

< 148

< 41 Cabbage 10/22/18

< 12

< 2.3

< 116 1896 +/- 312

< 50

< 15

< 14

< 102

< 34 Collards 10/22/18

< 18 3.8 +/- 2.0

< 293 4861 +/- 616

< 43

< 25

< 28

< 114

< 30 Kale 10/22/18

< 18 4.5 +/- 1.8 396 +/- 229 5013 +/- 585

< 37

< 28

< 25

< 118

< 35 Cabbage 11/12/18

< 16

< 3.6

< 118 2118 +/- 328

< 50

< 16

< 16

< 115

< 38 0

Collards 11/12/18

< 15 6.0 +/- 2.1 214 +/- 118 3960 +/- 381

< 57

< 21

< 17

< 123

< 30 I

Kale 11/12/18

< 16 4.7 +/- 2.0

< 168 5829 +/- 467

< 57

< 18

< 18

< 125

< 35 MEAN+/- 2 STD DEV 3.7 +/- 3.1 327 +/- 162 3693 +/- 2246 66 Cabbage 08/29/18 < 14 3.9 +/- 2.3 310 +/- 109 4585 +/- 240

< 34

< 14

< 13

< 83

< 22 Collards 08/29/18 < 17

< 3.9 604 +/- 120 5182 +/- 309

< 38

< 15

< 13

< 87

< 26 Kale 08129/18 < 15

< 3.5 525 +/- 125 4894 +/- 337

< 40

< 16

< 16

< 95

< 28 Cabbage 09/19/18 < 18 5.1 +/- 2.1 1404 +/- 151 4687 +/- 327

< 25

< 15

< 15

< 74

< 18 Collards 09/19/18 < 18 5.1 +/- 2.3 1767 +/- 155 4260 +/- 289

< 25

< 16

< 15

< 69

< 19 Kale 09/19/18 < 15 4.3 +/- 2.1 2169 +/- 329 5236 +/- 580

< 58

< 24

< 24

< 135

< 33 Cabbage 10/22/18 < 13 4.1 +/- 1.5 715 +/- 213 3572 +/- 336

< 58

< 11

< 10

< 96

< 28 MEAN+/- 2 STD DEV 4.5 +/- 1.2 1071 +/- 1419 4631 +/- 1156 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES

Table C-IX.1 QUARTERLY OSLD RESULTS FOR OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF MILLIREM/STD. QUARTER+/- 2 STANDARD DEVIATION STATION MEAN CODE

+/-2S.D.

JAN - MAR APR-JUN JUL-SEP OCT-DEC 11.3 +/- 4.3 10.7 11.9 8.7 13.B 3

6.2 +/- 3.2 4.0 7.8 6.6 6.3 4

8.7 +/- 7.1 7.3 8.0 5.7 13.8 5

13.B +/- 1.6 12.7 13.7 14.5 14.3 6

7.2 +/- 1.5 6.6 8.3 7.0 6.8 8

6.9 +/- 1.3 7.5 7.3 6.1 6.5 9

6.8 +/- 4.5 5.6 6.2 5.2 10.1 C

8.1 +/- 1.2 7.6 8.7 7.5 8.5 11 7.4 +/- 1.8 8.1 8.2 7.0 6.3 14 11.0 +/- 3.9 9.2 10.6 10.3 13.7 22 10.0 +/- 1.8 9.8 11.3 9.2 9.6 46 7.2 +/- 7.0 5.7 6.1 4.6 12.4 47 7.9 +/- 0.7 7.9 8.2 8.0 7.4 48 7.9 +/- 2.8 6.8 8.0 6.9 9.8 51 10.7 +/- 3.0 10.8 12.7 9.1 10.2 52 12.8 +/- 2.7 14.3 (1) 12.1 11.9 53 11.6 +/- 6.8 14.3 14.5 10.0 7.6 54 7.9 +/- 2.9 7.5 9.9 6.5 7.6 55 19.1 +/- 8.6 22.5 23.1 15.3 15.4 56 16.9 +/- 8.7 20.3 21.0 13.6 12.7 57 13.0 +/- 7.8 15.2 16.9 11.5 8.2 58 12.4 +/- 9.6 16.3 16.7 9.3 7.3 59 9.6 +/- 4.0 10.4 12.0 8.5 7.5 61 7.2 +/- 1.7 6.2 7.8 6.7 7.9 62 8.7 +/- 1.7 8.5 8.7 7.8 9.9 63 8.8 +/- 3.3 7.3 8.5 8.1 11.1 64 8.0 +/- 0.9 7.4 8.4 8.2

.7.9 65 7.2 +/- 0.9 6.8 7.8 7.0 7.0 66 7.1 +/- 1.1 6.4 6.8 7.5 7.6 68 6.4 +/- 4.9 4.8 6.3 4.6 9.9 71 6.7 +/- 0.7 6.6 7.1 6.7 6.2 72 7.3 +/- 2.0 6.0 7.3 7.3 8.5 73 6.4 +/- 1.3 6.9 6.7 5.5 6.6 74 8.4 +/- 4.2 6.8 8.9 6.7 11.2 75 9.7 +/- 2.7 9.1 9.3 8.8 11.7 78 7.8 +/- 0.9 8.3 7.9 7.2 7.7 79 9.1 +/- 4.7 8.9 8.7 6.5 12.2 81 8.8 +/- 5.2 6.4 8.6 7.6 12.4 82 8.7 +/- 2.4 8.2 7.8 8.3 10.5 84 9.1 +/- 9.3 5.3 8.9 6.5 15.7 85 7.0 +/- 2.5 6.4 7.3 5.6 8.5 86 7.0 +/- 1.3 6.4 7.9 7.1 6.6 BB 5.9 +/- 1.3 6.4 6.2 5.0 6.1 89 6.1 +/- 1.3 6.2 6.6 6.4 5.1 90 8.0 +/- 9.0 4.7 6.9 5.7 14.6 92 8.5 +/- 2.7 6.8 8.1 9.1 9.9 98 7.7 +/- 3.8 6.0 7.4 6.9 10.4 99 6.4 +/- 2.1 6.2 7.8 5.2 6.5 T1 12.0 +/- 4.7 10.4 10.9 (1) 14.7 100 7.6 +/- 3.5 5.7 7.2 7.5 9.9 101 7.0 +/- 1.8 6.4 8.0 7.4 6.1 102 9.2 +/- 4.6 6.8 8.5 9.3 12.3 103 8.2 +/- 1.8 7.2 8.1 8.1 9.4 104 7.3 +/- 2.3 7.9 8.5 6.0 6.6 105 5.9 +/- 4.0 4.2 6.3 4.5 8.6 106 6.8 +/- 2.0 6.0 7.2 6.0 8.1 107 7.9 +/- 3.9 7.2 7.8 5.9 10.5 109 8.0 +/- 3.3 7.3 8.5 6.1 9.9 110 7.5 +/- 2.0 7.9 7.4 6.2 8.5 112 13.0 +/- 5.4 13.7 16.5 10.7 11.1 113 7.8 +/- 1.8 7.0 8.1 7.2 8.9 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-18

C)

I......

(0 TABLE C-IX.2 COLLECTION PERIOD JAN-MAR APR-JUN JUL-SEP OCT-DEC MEAN QUARTERLY OSLO RESULTS FOR THE SITE BOUNDARY, INTERMEDIATE, SPECIAL INTEREST, AND CONTROL LOCATIONS FOR OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF MILLIREM PER STANDARD QUARTER+/- 2 STANDARD DEVIATION STANDARD DEVIATIONS OF THE STATION DATA SITE BOUNDARY

+/-2 S.D.

11.4 +/- 9.6 12.3 +/- 9.6 9.3 +/- 4.9 9.9 +/- 5.4 INTERMEDIATE

+/-2S.D.

7.1 +/- 3.2 8.0 +/- 3.0 6.9 +/- 3.8 9.6 +/- 5.0 SPECIAL INTEREST

+/-2S.D.

6.1 +/- 2.4 7.4 +/- 1.6 6.8 +/- 2.3 8.4 +/- 6.6 CONTROL

+/-2S.D.

8.4 +/- 2.3 9.7 +/- 2.7 8.9 +/- 4.0 11.1 +/- 7.4 TABLE C-IX.3

SUMMARY

OF THE AMBIENT DOSIMETRY PROGRAM FOR OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF MILLIREM/STD. QUARTER LOCATION SITE BOUNDARY INTERMEDIATE SPECIAL INTEREST CONTROL SAMPLES ANALYZED 74 124 36 8

PERIOD MINIMUM 6.2 4.2 4.0 7.5 PERIOD MAXIMUM 23.1 15.7 14.6 13.7 PERIOD MEAN

+/-2S.D.

10.7 +/- 7.9 7.9 +/- 4.4 7.2 +/- 4.0 9.5 +/- 4.1 SITE BOUNDARY STATIONS-1, 112, 113, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 66, T1 INTERMEDIATE STATIONS -100, 101, 102, 103, 104, 105, 106, 107, 109, 110, 22, 4, 46, 47, 48, 5, 6, 68, 73, 74, 75, 78, 79,8, 82, 84,85, 86,9, 98,99 SPECIAL INTEREST STATIONS -11, 3, 71, 72, 81, 88, 89, 90, 92 CONTROL STATIONS -14, C

(')

I I\\)

0 FIGURE C-1 MEAN COBALT-60 CONCENTRATION IN CLAMS OYSTER CREEK GENERATING STATION, 1983 - 2018 20 INDICATOR STATION C'

~

£

-- BACKGROUND STATION 515

~ -

bJ) 0 -

.:2 -

~

Q.

~10

• ~

=

u 0

CJ *-

Q.

5 0

~

I(')

t-00 00 Q'I 0

M

~

~

I(')

00

~

00

~

00 00 00 00 00 00 00 Q'I Q'I Q'I Q'I Q'I Q'I Q'I Q'I 0

0 Q'I Q'I Q'I Q'I Q'I Q'I Q'I Q'I Q'I Q'I Q'I Q'I Q'I Q'I 0

0 0

0 M

M M

M YEAR

• The year designations on the x-axis reflect multiple sampling periods in a given year, as well as historical changes in the number of sampling periods per year.

--C' "O

'-" e

~

I,.

OJ) 0 -

12

(')

I,.

I

~

N Q.

~

r:,i

~

• c =

u 0

(J *-

Q.

FIGURE C-2 MEAN COBALT-60 CONCENTRATION IN AQUATIC SEDIMENT OYSTER CREEK GENERATING STATION, 1984 - 2018 300

-+-INDICATOR STATION MFAN 250

-a-BACKGROUND STATION MEAN 200 150 50 0

'<:t Ir) t--

O"I N

00 00 O"I 00 00 00 00 O"I O"I 0

O"I O"I O"I O"I O"I O"I 0

0 N

N YEAR

• The year designations on the x-axis reflect multiple sampling periods in a given year, as well as historical changes in the number of sampling periods per year.

-c "O

8

~

l.

0 et) 0 I -

I\\)

~

I\\)

l.

~

Q.

rll

~

• c =

u 0

~ *-

Q.

FIGURE C-3 MEAN CESIUM-137 CONCENTRATION IN AQUATIC SEDIMENT OYSTER CREEK GENERATING STATION, 1984 - 2018 600 INDICATOR

---e-BACKGROUND 400 200 YEAR The year designations on the x-axis reflect multiple sampling periods in a given year, as well as historical changes in the number of sampling periods per year.

~

~

~ s (j

oS

~

w~

~

c..

r:IJ

~ *-

~ =

u 0

(j *-c..

0.05 0.04 0.03 0.02 0.01 FIGURE C-4 MEAN WEEKLY GROSS BETA CONCENTRATIONS IN AIR PARTICULATES OYSTER CREEK GENERATING STATION, 2008 - 2018 Indicator

Background

0 -;---~- -------------+---+------+----+----t------+---+----1 Date

0.18 0.16 i..

QJ 0.14 QJ s

~

0.12 o5

~

.i::,;i..

0.1 QJ Q.

1'J QJ *-

0.08 i.. =

u 0

~

0.06 Q.

0.04 0.02 0

./..9 cf<?

FIGURE C-5 MEAN MONTHLY GROSS BETA CONCENTRATIONS IN AIR PARTICULATES OYSTER CREEK GENERATING STATION, 1984 - 2018 CHERNOBYL ACCIDENT Indicator Stations Background Station*

YEAR

• Data from Cookstown station ONLY after December 1996

~

t:

~ =

0 "O

~

"O 0

=

I

~

(J'I

00.

~

Q.,

s

~

== s FIGURE C-6 MEAN QUARTERLY OSLO GAMMA DOSE OYSTER CREEK GENERATING STATION, 2018 30 ~------------------------------------------------------------------------------------------------------------------------------------------------

10 ~---------------~~---------------------------------------------------------

5 0 ---

0 TO 2 MILES

• 1Q18 2T05MILES DISTANCE RING FROM PLANT D2Ql8 D3Ql8 Oyster Creek's dosimetry changed from TLD to OSLD in 2012.

OVERS MILES D4Ql8

I,.

<l,l I,.

~ =

0 "O

I,.

~

"O 0

=

I

~

I\\)

a, rJ'J.

I,.

<l,l Q.

s

<l,l I,.

.= -.... s 40.0 30.0 FIGURE C-7 MEAN QUARTERLY TLD/OSLD GAMMA DOSE OYSTER CREEK GENERATING STATION, 1990 - 2018*

---

_______

• In di ca tor Mean___________ ----*

• Background Mean

_______________________________________________________________________________________________ l _____________________________________________ ----*

20.0 Year

• Oyster Creek's dosimetry changed from TLD to OSLO in 2012.

• In order for Oyster Creek to align with the new ANSI N 13.37-20 14 Environmental Dosimetry - Criteria for System Design and Implementation, the data was reviewed back to the beginning of 2007 and updated per the guidance in the ANSI Standard.

APPENDIX D DATA TABLES QC LABO RA TORY

Intentionally left blank

The following section presents the results of data analysis performed by the QC laboratory, Environmental Inc. Duplicate samples were obtained from several locations and media and were split with the primary laboratory, Teledyne Brown Engineering (TBE) and the QC Laboratory.

Comparison of the results for all media were within expected ranges.

Intentionally left blank

Table D-1.1 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD 05/14/18 10/16/18 MEAN 24

< 188

< 183 D-1 QCA

< 192

< 181 QCB

< 158

< 150

Table D-1.2 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE PERIOD Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 24 05/14/18

<7

<6

< 15

< 7

< 10

< 5

< 10

<8

< 7

< 36

< 12 10/16/18

< 6

<6

< 15

< 7

< 14

<6

< 12

<7

< 8

< 34

< 12 MEAN QCA 05/14/18

<6

<6

< 14

<6

< 13

< 6

< 11

< 7

< 7

< 32

< 10 10/16/18

< 8

<7

< 13

<6

< 15

< 6

< 12

< 8

<7

< 32

< 11 MEAN C

I N)

QCB 05/14/18

< 4

<4

<4

<2

< 8

<5

<5

<3

<3

< 18

<2 10/16/18

< 3

<3

< 5

< 3

<8

< 5

<7

<4

<6

< 14

<3 MEAN

Table D-11.1 CONCENTRATIONS OF TRITIUM IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD 1N 1S QCB1N QCB1S 01/02/18 - 01/30/18

< 198 (1)

< 154 (1) 02/06/18 - 02/27 /18

< 184 (1)

< 156 (1) 03/06/18 - 03/27 /18

< 178 (1)

< 163 (1) 04/04/18 - 04/24/18

< 181 (1)

< 156 (1) 05/01/18 - 05/30/18

< 195 (1)

< 151 (1) 06/05/18 - 06/26/18

< 196 (1)

< 154 (1) 07/03/18 - 07/30/18

< 188 (1)

< 152 (1) 08/06/18 - 08/27 /18

< 195 (1)

< 156 (1) 09/05/18 - 09/24/18

< 190 (1)

< 150 (1) 10/01/18 - 11/02/18

< 199 (1)

< 149 (1) 11/05/18 - 11/26/18

< 191 (1)

< 154 (1) 12/04/18 - 01/04/19

< 189 (1)

< 177 (1)

MEAN TABLE D-11.2 CONCENTRATIONS OF 1-131 IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD 1N 1S QCB1N QCB1S 01/02/18 - 01/30/18

< 0.6 (1)

< 0.3 (1) 02/06/18 - 02/27 /18

< 0.4 (1)

< 0.3 (1) 03/06/18 - 03/27/18

< 0.8 (1)

< 0.3 (1) 04/04/18 - 04/24/18

< 0.7 (1)

< 0.4 (1) 05/01 /18 - 05/30/18

< 0.7 (1)

< 0.4 (1) 06/05/18 - 06/26/18

< 0.7 (1)

< 0.4 (1) 07/03/18 - 07/30/18

< 0.9 (1)

< 0.4 (1) 08/06/18 - 08/27 /18

< 1.0 (1)

< 0.4 (1) 09/05/18 - 09/24/18

< 0.7 (1)

< 0.4 (1) 10/01/18 - 11/02/18

< 0.7 (1)

< 0.4 (1) 11/05/18 - 11/26/18

< 0.6 (1)

< 0.5 (1) 12/04/18 - 01/04/19

< 0.8 (1)

< 0.4 (1)

MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION D-3

Table D-11.3 CONCENTRATIONS OF GAMMA EMITTERS IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION PERIOD Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 1N 01/02/18 - 01/30/18

<7

<8

< 15

< 8

< 14

<7

< 13

< 8

<8

< 34

<7 02/06/18 - 02/27 /18

< 9

< 8

< 18

< 10

< 19

< 9

< 13

< 8

< 9

< 32

< 14 03/06/18 - 03/27 /18

< 6

<4

< 10

<5

< 10

< 6

< 10

<6

<5

< 24

< 9 04/04/18 - 04/24/18

<4

< 5

< 10

<5

< 10

< 5

< 8

< 5

<5

< 29

< 8 05/01 /18 - 05/30/18

< 4

< 5

< 10

<4

<8

< 5

<8

<4

<4

< 32

< 11 06/05/18 - 06/26/18

< 2

< 2

<5

<2

<4

<2

<3

<2

<2

< 17

<6 07/03/18 - 07/30/18

< 7

< 4

< 14

< 8

< 13

<6

< 14

<8

<7

< 41

< 12 08/06/18 - 08/27/18

< 5

< 5

< 11

<6

< 10

<6

< 10

<6

< 5

< 32

< 12 09/05/18 - 09/24/18

<4

< 3

<8

<4

< 8

<4

<8

<4

< 4

< 27

< 10 10/01/18 - 11/02/18

<6

< 7

< 13

<4

< 10

<6

< 11

<7

< 7

< 39

< 14 11/05/18 - 11/26/18

< 5

< 5

< 15

< 7

< 16

<6

< 12

<5

< 7

< 24

<8 12/04/18 - 01/04/19

<6

<5

< 11

<5

< 12

<5

< 10

<5

<5

< 28

<8 MEAN 0

~

1S 01/02/18 - 01/04/19 (1)

QCB1N 01/02/18 - 01/30/18

<3

<3

<3

<2

<4

<3

<4

<3

< 3

< 12

<3 02/06/18 - 02/27 /18

<3

<3

<5

<3

<4

<4

<4

<2

<4

< 18

<2 03/06/18 - 03/27 /18

< 2

<2

< 3

< 2

<3

< 3

<5

<3

<2

< 16

<4 04/04/18 - 04/24/18

< 2

<3

<3

< 1

<3

< 3

<3

<2

<2

< 15

< 2 05/01/18 - 05/30/18

<4

<4

< 8

<3

<6

<4

<7

<3

< 3

< 17

< 2 06/05/18 - 06/26/18

<3

<2

< 5

<2

<5

<3

<4

<2

<2

< 16

< 5 07/03/18 - 07/30/18

<2

< 1

<6

< 2

<4

< 3

<5

<3

<3

<9

< 3 08/06/18 - 08/27 /18

<4

< 4

< 8

< 3

< 8

<6

<5

<4

<5

< 21

< 3 09/05/18 - 09/24/18

< 1

< 1

<4

<2

<3

<2

<5

<2

<3

< 13

< 1 10/01/18 - 11/02/18

< 3

<2

<6

<2

< 5

<4

<4

<2

<2

< 13

<2 11/05/18 - 11/26/18

< 5

<2

<6

< 3

< 10

<8

<6

<5

< 6

< 14

<2 12/04/18 - 01/04/19

< 2

<2

< 6

<2

< 5

<3

<6

< 3

< 4

< 15

<3 MEAN QCB 1 S 01 /02/18 - 01 /04/19 (1)

(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

Table D-111.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD W-3C QCB 01/22/18 - 01/22/18

< 195

< 156 04/23/18 - 04/23/18

< 185

< 156 08/02/18 - 08/02/18

< 191

< 152 10/31/18 - 10/31/18

< 188

< 149 MEAN D-5

Table D-111.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA -

COLLECTION SITE PERIOD Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 W-3C (TBE)

W-3C 01/09/18 - 01/09/18

<5

< 7

< 10

< 7

< 16

< 7

< 11

<7

<6

<6

< 29

<5 04/07/18 - 04/07/18

<6

< 6

< 11

<5

< 10

< 5

< 10

< 6

<6

< 5

< 23

<8 07/12/18 - 07/12/18

< 5

< 7

< 12

< 6

< 8

<6

< 11

< 11

< 6

< 5

< 29

< 8 10/12/18 - 10/12/18

< 8

< 8

< 16

< 7

< 18

< 11

< 15

< 14

<9

<7

< 40

< 13 MEAN QCB (EIML)

QCB 01/22/18 - 01/22/18

<2

<2

<5

<3

< 3

<3

<5

<4

<2

<3

< 14

<2 CJ 04/23/18 - 04/23/18

<4

<3

< 4

<3

< 8

<4

<4

<6

< 3

<4

< 14

<4 I 0) 08/02/18 - 08/02/18

<5

<5

< 10

<3

< 7

< 3

<5

< 8

<4

<4

< 21

<5 10/31/18 - 10/31/18

<4

< 2

<5

<2

< 5

<3

<6

< 8

<3

<3

< 16

<2 MEAN

Table D-IV.1 SITE 24 QCA QCB CJ I

--.I CONCENTRATIONS OF GAMMA EMITTERS IN CLAM SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/KG WET+/- 2 SIGMA COLLECTION PERIOD 05/14/18 05/14/18 05/14/18 K-40 1294 +/- 534 1495 +/- 523 1903 +/- 124 Mn-54 Co-58

< 42

< 46

< 37

< 34

<3

<6 Fe-59 Co-60 Zn-65 Cs-134 Cs-137

< 106

< 44

<84

<49

<35

< 74

< 35

<84

<46

<40

< 13

< 3

<9

<3

<4

Table D-V.1 CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RESULTS IN UNITS OF PCI/KG DRY+/- 2 SIGMA COLLECTION SITE PERIOD Be-7 K-40 Mn-54 Co-58 Co-60 Cs-134 Cs-137 Ra-226 Th-228 24 05/16/18

< 330 3571 +/- 825

< 46

< 45

< 47

< 54

< 42 1458 +/-924 346 +/- 67 10/16/18

< 574 11940 +/- 1301

< 68

< 64

< 65

< 73

< 64

< 1570 733 +/- 102 MEAN +/- 2 STD DEV 7756 +/- 11836 1458 +/-0 540 +/- 547 QCA 05/16/18

< 647 4207 +/- 1050

< 76

< 63

< 67

< 77

< 72

< 1820 303 +/- 128 10/16/18

< 624 12810 +/- 1370

< 61

< 69

< 65

< 68

< 70 1932 +/- 1272 614 +/- 155 MEAN +/- 2 STD DEV 8509 +/- 12166 1932 +/-0 459 +/- 440 QCB 05/14/18

< 165 2298 +/- 291

< 12

< 9

< 10

< 12

< 14 703 +/-296

< 1007 C

10/15/18

< 178 9708 +/- 626

< 17

< 23

< 16

< 20

< 13 793 +/-386

< 1827 I

00 MEAN+/- 2 STD DEV 6003 +/- 10479 748 +/- 127 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES

TABLE D-VI.1 CONCENTRATIONS OF STRONTIUM AND GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF OYSTER CREEK GENERATING STATION, 2018 RES UL TS IN UNITS OF PCI/KG WET+/- 2 SIGMA COLLECTION SITE PERIOD Sr-89 Sr-90 Be-7 K-40 1-131 Cs-134 Cs-137 Ba-140 La-140 36 Rape 09/19/18

< 21

< 4.3

< 334 3516 +/- 487

< 53

< 31

< 25

< 137

< 37 Collards 09/19/18

< 19 1.3 +/- 0.8 399 +/- 191 3772 +/- 672

< 58

< 32

< 25

< 127

< 39 Kale 09/19/18

< 21

< 4.4 273+/- 239 3909 +/- 580

< 58

< 29

< 28

< 148

< 41 MEAN+/- 2 STD DEV 1.3 +/- 0 336 +/- 178 3732 +/- 399 QCA Rape 09/19/18

< 19

< 4.0 306 +/- 208 3919 +/- 559

< 57

< 28

< 31

< 132

< 52 Collards 09/19/18

< 10

< 3.5 262 +/- 225 4130 +/- 648

< 53

< 24

< 32

< 151

< 54 Kale 09/19/18

< 22

< 3.9 369 +/- 220 3742 +/- 601

< 50

< 22

< 28

< 126

< 43 CJ MEAN +/- 2 STD DEV 312 +/- 108 3930 +/- 388 I (0 QCB Rape 09/19/18

<3

<2 407 +/- 133 4581 +/- 377

< 20

< 9

< 9

< 61

< 12 Collards 09/19/18

< 3

<2 304 +/- 113 3945 +/- 316

< 22

< 8

< 11

< 37

< 13 Kale 09/19/18

<3

<2 299 +/- 88 3437 +/- 251

< 18

< 7

< 9

< 46

<8 MEAN +/- 2 STD DEV 337 +/- 122 3988 +/- 1146

Intentionally left blank

APPENDIX E INTER-LABORATORY COMPARISON PROGRAM

Intentionally left blank

TABLE E.1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services Identification TBE Known Ratio of TBE to Month/Year Number Matrix Nuclide Units Reported Value (a)

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

A= Acceptable -reported result falls within ratio limits of 0.80-1.20 W= Acceptable with warning-reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< O. 70 and> 1.30 E-1 Evaluation (bl A

A A

A A

A A

A A

A A

A A

A A

A A

A A

A A

A A

w A

A A

A A

A A

A (Page 1 of 4)

TABLE E.1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services Identification TBE Known Ratio of TB E to Month/Year Number Matrix Nuclide Units Reported Value (al Analytics Result Value June 2018 E12205 Milk Sr-89 pCi/L 74.9 84.6 0.89 Sr-90 pCi/L 10.5 11.4 0.92 E12206 Milk Ce-141 pCi/L 89.2 82.2 1.08 Co-58 pCi/L 94.8 89 1.07 Co-60 pCi/L 125 113 1.10 Cr-51 pCi/L 256 239 1.07 Cs-134 pCi/L 112 114 0.99 Cs-137 pCi/L 107 98.8 1.08 Fe-59 pCi/L 95.9 86.0 1.12 1-131 pCi/L 69.8 71.9 0.97 Mn-54 pCi/L 138 130 1.06 Zn-65 pCi/L 186 157 1.18 E12207 Charcoal 1-131 pCi 69.6 72.2 0.96 E12208 AP Ce-141 pCi 151 165 0.92 Co-58 pCi 174 178 0.98 Co-60 pCi 290 227 1.28 Cr-51 pCi 452 478 0.95 Cs-134 pCi 215 227 0.95 Cs-137 pCi 206 198 1.04 Fe-59 pCi 180 172 1.05 Mn-54 pCi 265 260 1.02 Zn-65 pCi 280 315 0.89 E12209 Water Fe-55 pCi/L 1790 1740 1.03 E12210 AP Sr-89 pCi 77.8 90.3 0.86 Sr-90 pCi 9.54 12.2 0.78 (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 o. 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 E-2 Evaluation (bl A

A A

A A

A A

A A

A A

A A

A A

w A

A A

A A

A A

A w

(Page 2 of 4)

TABLE E.1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services Identification TBE Known Ratio ofTBE to MonthNear Number Matrix Nuclide Units Reported Value (a)

Analytics Result Evaluation (b)

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 Nc1>

1-131 pCi/L 83.1 58.2 1.43 Nc2J 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 of 0. 80-1. 20 W = Acceptable with warning - reported result falls within 0. 70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< O. 70 and > 1. 30 (1) See NCR 18-20 (2) See NCR 18-24 (3) See NCR 18-21 (Page 3 of 4)

E-3

TABLE E.1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services Identification TBE Known Ratio of TBE to Month/Year Number Matrix Nuclide Units Reported Value (a)

Analytics Result Value December 2018 E12313 Milk Sr-89 pCi/L 71.9 91.9 0.78 Sr-90 pCi/L 12.1 13.3 0.91 E12314 Milk Ce-141 pCi/L 124 133 0.93 Co-58 pCi/L 110 119 0.93 Co-60 pCi/L 202 212 0.95 Cr-51 pCi/L 292 298 0.98 Cs-134 pCi/L 146 171 0.85 Cs-137 pCi/L 118 121 0.98 Fe-59 pCi/L 120 114 1.05 1-131 pCi/L 94.2 93.3 1.01 Mn-54 pCi/L 151 154 0.98 Zn-65 pCi/L 266 264 1.01 E12315 Charcoal 1-131 pCi 94.8 89.9 1.05 E12316A AP Ce-141 pCi 92.3 94.0 0.98 Co-58 pCi 73.4 83.8 0.88 Co-60 pCi 137 150 0.91 Cr-51 pCi 202 210 0.96 Cs-134 pCi 115 121 0.95 Cs-137 pCi 85.0 85.4 1.00 Fe-59 pCi 83.1 80.8 1.03 Mn-54 pCi 104 109 0.96 Zn-65 pCi 168 187 0.90 E12317 Water Fe-55 pCi/L 2110 1840 1.15 E12318 AP Sr-89 pCi 81.1 83.0 0.98 Sr-90 pCi 11.4 12.0 0.95 (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 O. 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 E-4 Evaluation (bl w

A A

A A

A A

A A

A A

A A

A A

A A

A A

A A

A

.A A

A (Page 4 of 4)

TABLE E.2 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering Environmental Services Identification TBE Known Acceptance Month/Year Number Matrix Nuclide Units Reported Value (a)

Range Evaluation (b)

Value February 2018 18-MaS38 Soil Ni-63 Bq/kg 9.94 (1)

A Sr-90 Bq/kg 0.846 (1)

A 18-MaW38 Water Am-241 Bq/L 0.785 0.709 0.496 - 0.922 A

Ni-63 Bq/L 12.6 14.0 9.8 - 18.2 A

Pu-238 Bq/L 0.0214 0.023 (2)

A Pu-239/240 Bq/L 0.544 0.600 0.420 - 0.780 A

18-RdF38 AP U-234/233 Bq/sample 0.111 0.124 0.087 - 0.161 A

U-238 Bq/sample 0.123 0.128 0.090 - 0.166 A

18-RdV38 Vegetation Cs-134 Bq/sample 2.46 3.23 2.26 - 4.20 w

Cs-137 Bq/sample 3.14 3.67 2.57 - 4.77 A

Co-57 Bq/sample 4.12 4.42 3.09 - 5.75 A

Co-60 Bq/sample 1.86 2.29 1.60 - 2.98 A

Mn-54 Bq/sample 2.21 2.66 1.86 - 3.46 A

Sr-90 Bq/sample NR<3>

Zn-65 Bq/sample

-0.201 (1)

A November 2018 18-MaS39 Soil Ni-63 Bq/kg 703 765 536-995 A

Sr-90 Bq/kg 137 193 135 - 251 w

18-MaW39 Water Am-241 Bq/L 0.0363 (1)

A Ni-63 Bq/L 6.18 7.0 4.9 - 9.1 A

Pu-238 Bq/L 0.73 0.674 0.472 - 0.876 A

Pu-239/240 Bq/L 0.89 0.928 0.650 - 1.206 A

18-RdF39 AP U-234/233 Bq/sample 0.159 0.152 0.106-0.198 A

U-238 Bq/sample 0.162 0.158 0.111 - 0.205 A

18-RdV39 Vegetation Cs-134 Bq/sample 1.85 1.94 1.36 - 2.52 A

Cs-137 Bq/sample 2.5 2.36 1.65 - 3.07 A

Co-57 Bq/sample 3.53 3.31 2.32 - 4.30 A

Co-60 Bq/sample 1.6 1.68 1.18-2.18 A

Mn-54 Bq/sample 2.61 2.53 1.77 - 3.29 A

Sr-90 Bq/sample 0.338 0.791 0.554 - 1.028 N<4J Zn-65 Bq/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 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< O. 70 and > 1. 30 (1) False positive test (2) Sensitivity evaluation (3) See NCR 18-09 (4) See NCR 18-25 (Page 1 of 1)

E-5

TABLE E.3 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services TBE Identification Known Acceptance Month/Year Number Matrix Nuclide Units Reported Value<*>

Limits Evaluation Cb>

Value March 2018 MRAD-28 AP GR-A pCi/sample 65.7 43.4 22.7-71.5 GR-8 pCi/sample 57.2 52 31.5 - 78.6 April 2018 RAD-113 Water Ba-133 pCi/L 91.2 91.5 77.1-101 Cs-134 pCi/L 70.4 75.9 62.0- 83.5 Cs-137 pCi/L 122 123 111 - 138 Co-60 pCi/L 64.8 64.3 57.9-73.2 Zn-65 pCi/L 98.6 86.7 78.0 - 104 GR-A pCi/L 32.8 28.6 14.6-37.5 GR-8 pCi/L 62.9 73.7 51.4-81.1 U-Nat pCi/L 6.7 6.93 5.28 - 8.13 H-3 pCi/L 17100 17200 15000 - 18900 Sr-89 pCi/L 38.6 48.8 38.3-56.2 Sr-90 pCi/L 27.1 26.5 19.2 - 30.9 1-131 pCi/L 26.7 24.6 20.4 - 29.1 September 2018 MRAD-29 AP GR-A pCi/sample 49.7 55.3 28.9-91.1 AP GR-8 pCi/sample 75.3 86.5 52.4-131 October 2018 RAD-115 Water Ba-133 pCi/L 15.2 16.3 11.9-19.4 Cs-134 pCi/L 85.9 93.0 76.4 - 102 Cs-137 pCi/L 229 235 212 -260 Co-60 pCi/L 81.9 80.7 72.6-91.1 Zn-65 pCi/L 348 336 302-392 GR-A pCi/L 38.9 60.7 31.8 - 75.4 GR-B pCi/L 36.5 41.8 27.9-49.2 U-Nat pCi/L 17.48 20.9 16.8 - 23.4 H-3 pCi/L 2790 2870 2410-3170 1-131 pCi/L 26.9 27.2 22.6 - 32.0 Sr-89 pCi/L 57.2 56.9 45.5 - 64.6 Sr-90 pCi/L 36.8 31.4 22.9-36.4 (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 E-6 A

A A

A A

A A

A A

A A

A A

A A

A A

A A

A A

A A

A A

A A

Nc1>

(Page 1 of 1)

TABLE E.4 lnterlaboratory Comparison Crosscheck Program, Environmental Resource Associates (ERAt MRAD Study Environmental, Inc., Midwest Laboratory Concentration Lab Code b Date Analysis Laboratory ERA Result Control Limits O Acceptance Result ERAP-942 03/19/18 Am-241(dJ 24.6 7.86 5.61 - 10.5 Fail ERAP-942 03/19/18 Am-241(dJ 7.30 7.86 5.61 - 10.5 Pass ERAP-942 03/19/18 Cs-134 174 201 132 - 250 Pass ERAP-942 03/19/18 Cs-137 969 865 710-1130 Pass ERAP-942 03/19/18 Co-60 672 665 565 - 845 Pass ERAP-942 03/19/18 Fe-55 701 771 281 - 1230 Pass ERAP-942 03/19/18 Mn-54

<50

< 50.0 0.00 - 50.0 Pass ERAP-942 03/19/18 Zn-65 594 668.0 548 - 1020 Pass ERAP-942 03/19/18 Pu-238 56.8 55.6 42.0 - 68.3 Pass ERAP-942 03/19/18 Pu-239/240 54.4 52.3 39.1 -63.1 Pass ERAP-942 03/19/18 Sr-90 113 124 78.4 - 169 Pass ERAP-942 03/19/18 U-233/234 22.8 24.6 18.2 - 28.8 Pass ERAP-942 03/19/18 U-238 22.7 24.4 18.4-29.1 Pass ERAP-944 03/19/18 Gr. Alpha 49.1 43.4 22.7 - 71.5 Pass ERAP-944 03/19/18 Gr. Beta 44.8 52.0 31.5 - 78.6 Pass ERS0-946 03/19/18 Ac-228 1,480 1,240 818 -1560 Pass ERS0-946 03/19/18 Am-241 48.0 74.7 40.3 - 106 Pass ERS0-946 03/19/18 Bi-212<*J 1,980 1,240 355 -1,850 Fail ERS0-946 03/19/18 Bi-212<*J 1,220 1,240 355 -1,850 Pass ERS0-946 03/19/18 Bi-214 2,180 1,760 845 - 2,260 Pass ERS0-946 03/19/18 Cs-134 5,230 5,330 3,640 - 6,370 Pass ERS0-946 03/19/18 Cs-137 4,820 4,210 3,180 - 5,320 Pass ERS0-946 03/19/18 Co-60 8,390 8,060 6,350 - 9,950 Pass ERS0-946 03/19/18 K-4o<*J 14,100 10,600 7,300 - 12,700 Fail ERS0-946 03/19/18 K-4o<*J 12,160 10,600 7,300 - 12,700 Pass ERS0-946 03/19/18 Mn-54

< 1,000

< 1,000 0.00 - 1,000 Pass ERS0-946 03/19/18 Pb-212 1,140 1,240 865 - 1,570 Pass ERS0-946 03/19/18 Pb-214 2,330 1,850 777 - 2,910 Pass ERS0-946 03/19/18 Pu-238 1,830 1,470 733 - 2,230 Pass

• Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing administered by Environmental Resources Associates, seNing as a replacement for studies conducted previously by the Environmental Measurements Laboratory Quality Assurance Program (EIML) b Laboratory codes as follows: ERW (water), ERAP (air filter), ERSO (soil), ERVE (vegetation). Results are reported in units of pCi/L, except for air filters (pCi!Filter), vegetation and soil (pCilkg.

c Results are presented as the known values, expected laboratory precision (2 sigma, 1 determination) and control limits as provided by ERA d Reported result was higher than ERA 's upper acceptance limit. An investigation was initiated. The sample was run with a pretreatment technique. Rerunning the analysis with this pretreatment gave a result of 7.30 pCiltotal. Goring forward all samples for Am-241 will be analyzed utilizing this pretreatment.

• The ERA results for K-40 and Bi-212 were outside the acceptable limits. The sample analysis was rerun utilizing a different library with acceptable results. The gamma software vendor will be consulted for the differences between the two libraries. In the meantime, EIML will occasionally be counting a standard with known activity to ensure reported values are within the laboratory's acceptance criteria.

(Page 1 of 2)

E-7

TABLE E.4 lnterlaboratory Comparison Crosscheck Program, Environmental Resource Associates (ERA)3 MRAD Study Environmental, Inc., Midwest Laboratory Concentration Lab Code b Date Analysis Laboratory ERA Result Control Limits c Acceptance Result ERS0-946 03/19/18 Pu-239 1,520 1,330.

725-1,910 Pass ERS0-946 03/19/18 Sr-90 3,500 4,500 1,400- 7,010 Pass ERS0-946 03/19/18 Th-234 1,800 1,800 680 - 3,080 Pass ERS0-946 03/19/18 U-234 1,610 1,820 853 - 2,230 Pass ERS0-946 03/19/18 U-238 1,800 1,800 988 - 2,420 Pass ERS0-946 03/19/18 Zn-65 2,440 1,990 1,590 - 2,710 Pass ERW~952 03/19/18 Gr. Alpha 25.3 29.0 10.6 - 40.0 Pass ERW-952 03/19/18 Gr. Beta 61.3 73.1 36.6 -101 Pass ERW-954 03/19/18 H-3 22,300 21,700 16,400 - 26,400 Pass ERVE-948 03/19/18 Am-241 3,800 3,880 2,400 - 5,480 Pass ERVE-948 03/19/18 Cm-244 2,490 2,630 1,480 - 3,270 Pass ERVE-948 03/19/18 Co-60 579 491 385 - 642 Pass ERVE-948 03/19/18 Cs-134 2,090 1,950 1,290 - 2,600 Pass ERVE-948 03/19/18 Cs-137 2,640 2,160 1,660 - 2,910 Pass ERVE-948 03/19/18 K-40 34,000 30,900 23,200 - 39,100 Pass ERVE-948 03/19/18 Mn-54

< 300

. < 300 0.00 - 300 Pass ERVE-948 03/19/18 Zn-65 3,080 2,400 1,790 - 3,560 Pass ERVE-948 03/19/18 Pu-238 2,400 2,020 1,400 - 2,600 Pass ERVE-948 03/19/18 Pu-239 5,140 4,160 2,880 - 5,270 Pass ERVE-948 03/19/18 Sr-90 3,570 3,330 1,880 - 4,340 Pass ERVE-948 03/19/18 U-233/234 4,130 4,050 2,850 - 5,170 Pass ERVE-948 03/19/18 U-238 4,190 4,010 2,830 - 5,020 Pass ERW-950 03/19/18 Am-241 72.5 103 70.7 - 132 Pass ERW-950 03/19/18 Co-60 1,550 1,480 1,280 - 1,700 Pass ERW-950 03/19/18 Cs-134 1,280 1,330 1,000 - 1,460 Pass ERW-950 03/19/18 Cs-137 343 328 281 - 373 Pass ERW-950 03/19/18 Mn-54

< 100

< 100 0.00 - 100 Pass ERW-950 03/19/18 Pu-238 59.8 66.1 39.7 - 85.6 Pass ERW-950 03/19/18 Pu-239 84.8 91.8 56.8 - 113 Pass ERW-950 03/19/18 U-234 111 132 100-151 Pass ERW-950 03/19/18 U-238 113 131 102 -154 Pass ERW-950 03/19/18 Zn-65 1,450 1,300 1, 160 - 1,640 Pass ERW-950 03/19/18 Fe-55 533 445 261 - 647 Pass ERW-950 03/19/18 Sr-90 754 781 562 - 965 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing administered by Environmental Resources Associates, seNing as a replacement for studies conducted previously by the Environmental Measurements Laboratory Quality Assurance Program (EIML) b Laboratory codes as follows: ERW (water), ERAP (air filter), ERSO (soil), ERVE (vegetation). Results are reported in units of pCi/L, except for air filters (pCi!Filter), vegetation and soil (pCi/kg.

0 Results are presented as the known values, expected laboratory precision (2 sigma, 1 determination) and control limits as provided by ERA (Page 2 of 2)

E-8

TABLE E.5 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Environmental, Inc., Midwest Laboratory Concentration a Lab Codeb Reference Analysis Laboratory Known Control Limits c Acceptance Date Result Activity MAS0-765 02/01/18 Am-241 1.57 +/- 4.46 0

NA C Pass MAS0-765 02/01/18 Cs-134 4.69 +/- 2.59 4.6 NA d Pass MAS0-765 02/01/18 Co-57 886 +/- 7.0 826 578 - 1,074 Pass MAS0-765 02/01/18 Co-60 579 +/- 7.0 560 392 - 728 Pass MAS0-765 02/01/18 Mn-54 1,135 +/- 15 1,010 707-1,313 Pass MAS0-765 02/01/18 K-40 653 +/-47 577 404 - 750 Pass MAS0-765 02/01/18 Zn-65 1,096 +/- 19 960 672 - 1,248 Pass MAS0-765 02/01/18 Pu-238 54.4 +/- 5.6 452 31.6 - 58.8 Pass MAS0-765 02/01/18 Pu-239/240 58.9 +/- 5.6 50.8 35.6 - 66.0 Pass MAS0-765 02/01/18 Sr-90 1.07+/-1.15 0

NA C Pass MAAP-769 02/01/18 Am-241 0.070 +/- 0.021 0.067 0.047 - 0.087 Pass MAAP-769 02/01/18 Cs-134 0.55 +/- 0.04 0.675 0.473 - 0.878 Pass MAAP-769 02/01/18 Cs-137 0.01 +/- 0.01 0

NA C Pass MAAP-769 02/01/18 Co-57 1.06 +/- 0.04 1.18 0.83 - 1.53 Pass MAAP-769 02/01/18 Co-60 0.01 +/- 0.01 0

NA C Pass MAAP-769 02/01/18 Mn-54 1.01 +/- 0.05 1.03 0.72 -1.34 Pass MAAP-769 02/01/18 Zn-65 1.37 +/- 0.11 1.33 0.93 - 1.73 Pass MAAP-769 02/01/18 Pu-238 0.042 +/- 0.017 0.0445 0.0312 - 0.0579 Pass MAAP-769 02/01/18 Pu-239/240

-0.001 +/- 0.006 0

NA C Pass MAAP-769 02/01/18 Sr-90 1.12+/-0.13 1.010 0.71 - 1.31 Pass MAAP-769 02/01/18 U-234/233 0.117+/-0.023 0.124 0.087 - 0.161 Pass MAAP-769 02/01/18 U-238 0.126 +/- 0.023 0.128 0.090 - 0.166 Pass MAVE-767 02/01/18 Cs-134 3.03+/-0.10 3.23 2.26 - 4.20 Pass MAVE-767 02/01/18 Cs-137 3.86 +/- 0.05 3.67 2.57 -4.77 Pass MAVE-767 02/01/18 Co-57 4.86 +/- 0.09 4.42 3.09 - 5.75 Pass MAVE-767 02/01/18 Co-60 2.24 +/- 0.06 2.29 1.60 - 2.98 Pass MAVE-767 02/01/18 Mn-54 2.75 +/- 0.08 2.66 1.86 - 3.46 Pass MAVE-767 02/01/18 Zn-65 0.02 +/- 0.05 0

NA C Pass MAW-656 02/01/18 1-129 1.66 +/- 0.07 1.93 1.35 - 2.51 Pass MAW-662 02/01/18 Am-241 0.581 +/- 0.050 0.709 0.496 - 0.922 Pass MAW-662 02/01/18 Cs-134 9.35 +/- 0.38 10 7.1 -13.3 Pass MAW-662 02/01/18 Cs-137 13.0 +/- 0.2 12.2 8.5 - 15.9 Pass MAW-662 02/01/18 Co-57 0.003 +/- 0.039 0

NA C Pass MAW-662 02/01/18 Co-60 11.73 +/- 0.19 11.5 8.1 - 15.0 Pass MAW-662 02/01/18 Mn-54 0.060 +/- 0.0.19 0

NA C Pass MAW-662 02/01/18 Zn-65 15.85 +/- 0.27 14.3 10.0-18.6 Pass MAW-662 02/01/18 Fe-55 10.7+/-11.7 11.1 7.80 - 14.4 Pass

• Results are reported in units of Bqlkg (soil), Bq!L (water) or Bqltotal sample (filters, vegetation) b Laboratory codes as follows: MAW (water), MAAP (air filter), MASO (soil), MAVE (vegetation) 0 MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP. A known value of "zero" indicates an analysis was included in the testing series as a "false positive". MAPEP does not provide control limits.

d Provided in the series for "sensitivity evaluation". MAPEP does not provde control limits.

(Page 1 of 3)

E-9

TABLE E.5 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Environmental, Inc., Midwest Laboratory Concentration a Lab Code b Reference Analysis Laboratory Known Control Limits c Date Result Activity MAW-662 02/01/18 Ni-63e 11.1+/-1.4 14.0 9.8-18.2 MAW-662 02/01/18 Ni-63e 12.9 +/- 1.7 14.0 9.8-18.2 MAW-662 02/01/18 H-3

-0.3 +/- 3.0 0

NA C MAW-662 02/01/18 Pu-238 0.02 +/- 0.01 0.023 NA d MAW-662 02/01/18 Pu-239/240 0.585 +/- 0.056 0.600 0.420 - 0.780 MAW-662 02/01/18 Ra-2261 0.340 +/- 0.040 0.257 0.180 - 0.334 MAW-662 02/01/18 Ra-2261 0.297 +/- 0.048 0.257 0.180 - 0.334 MAW-662 02/01/18 Sr-90 9.92 +/- 0.75 11.4 8.0 - 14.8 MAW-847 02/01/18 Tc-99 4.9 +/- 0.4 4.37 3.06 - 5.88 MAW-847 02/01/18 U-234/233 0.404 +/- 0.041 0.430 0.301 - 0.559 MAW-847 02/01/18 U-238 0.396 +/- 0.041 1.20 0.84 -1.56 MAS0-3638 08/01/18 Cs-134 688.7 +/- 26.2 781 547-1,015 MAS0-3638 08/01/18 Cs-137 605.9 +/- 22.7 572 400 - 744 MAS0-3638 08/01/18 Co-57 976.7 +/- 37.6 958 671 - 1,245 MAS0-3638 08/01/18 Co-60 604.5 +/- 24.9 608 426 - 790 MAS0-3638 08/01/18 Mn-54 5.2 +/- 5.2 0

NA C MAS0-3638 08/01/18 K-40 630 +/- 31 566 396 - 736 MAS0-3638 08/01/18 Zn-65 556.4 +/- 26.8 500 350 - 650 MAAP-3636 08/01/18 Cs-134 0.37 +/- 0.04 0.444 0.311 - 0.577 MAAP-3636 08/01/18 Cs-137 0.34 +/- 0.05 0.345 0.242 - 0.449 MAAP-3636 08/01/18 Co-57 0561 +/- 0.04 0.592 0.414 - 0.770 MAAP-3636 08/01/18 Co-60 0.28 +/- 0.03 0.294 0.206 - 0.382 MAAP-3636 08/01/18 Mn-54 0.26 +/- 0.05 0.266 0.186 - 0.346 MAAP-3636 08/01/18 Zn-65 0.22 +/- 0.07 0.201 NA d MAVE-4517 08/01/18 Cs-134 1.87 +/- 0.10 1.94 1.36 - 2.52 MAVE-4517 08/01/18 Cs-137 2.69+/-0.15 2.36 1.65 - 3.07 MAVE-4517 08/01/18 Co-57 3.90+/-0.12 3.31 2.32 - 4.30 MAVE-4517 08/01/18 Co-60 1.76 +/- 0.09 1.68 1.18 -2.18 MAVE-4517 08/01/18 Mn-54 2.91 +/-0.16 2.53 1.77 - 3.29 MAVE-4517 08/01/18 Zn-65 1.53 +/- 0.21 1.37 0.96 -1.78

• Results are reported in units of Bq/kg (soil), Bq/L (water) or Bqltotal sample (filters, vegetation) b Laboratory codes as follows: MAW (water), MAAP (air filter), MASO (soil), MAVE (vegetation)

Acceptance Warning Pass Pass Pass Pass Fail Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass 0 MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP. A known value of "zero" indicates an analysis was included in the testing series as a "false positive". MAPEP does not provide control limits.

d Provided in the series for "sensitivity evaluation". MAPEP does not provde control limits.

• The lab was in the "warning zone" on this study (biased low). The sample was rerun applying an aggressive oxidation technique to remove a complexing agent that is utilized in the early steps of the procedure. Reanalysis was acceptable with this enhanced technique.

' An investigation was performed to determine reason for the failre of the Ra-226 result. A backup solution was analyzed with acceptable results. The current study as well as a past study were reanalyzed with acceptable results.

No conclusion has been currently drawn from the results of this inestigation.

(Page 2 of 3)

E-10

TABLE E.5 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Environmental, Inc., Midwest Laboratory Concentration a Lab Codeb Reference Analysis Laboratory Known Control Limits c Date Result Activity MAW-3480 08/01/18 H-3 336 +/- 10.7 338 237 - 439 MAW-3480 08/01/18 Cs-134 7.9 +/- 0.3 8.7 6.1-11.3 MAW-3480 08/01/18 Cs-137 7.6 +/- 0.3 6.9 4.8 - 9.0 MAW-3480 08/01/18 Co-57 16.7 +/- 0.4 14.9 10.4 - 19.4 MAW-3480 08/01/18 Co-60 0.12+/-0.12 0

NA C MAW-3480 08/01/18 Mn-54 13.4+/-0.4 12.5 8.8 - 16.3 MAW-3480 08/01/18 Zn-65 7.80 +/- 0.53 7.53 5.27 - 9.79 MAW-3480 08/01/18 1-129 1.32 +/- 0.08 1.62 1.13 -2.11 MAAP-4519 08/01/17 Pu-238 0.0300 +/- 0.0100 0.0 0.0209 - 0.0387 MAAP-4519 08/01/17 Pu-239/240 0.0400 +/- 0.0200 0

0.0328 - 0.0608 MAAP-4519 08/01/17 Sr-90 0.800 +/- 0.100 0.80 0.561 -1.041 MAAP-4519 08/01/17 U-234/233 0.070 +/- 0.010 0.08 0.059 - 0.109 MAAP-4519 08/01/17 U-238 0.090 +/- 0.010 0.087 0.061 - 0.113

• Results are reported in units of Bqlkg (soil), Bq/L (water) or Bqltotal sample (filters, vegetation) b Laboratory codes as follows: MAW (water), MAAP (air filter), MASO (soil), MAVE (vegetation)

Acceptance Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass 0 MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP. A known value of "zero" indicates an analysis was included in the testing series as a "false positive". MAPEP does not provide control limits.

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TABLE E.6 lnterlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA) 3 RAD Study Environmental, Inc., Midwest Laboratory Lab Code Date Analysis Laboratory ERA Result Control Limits Acceptance Result ERW-52 01/08/18 Sr-89 61.6 +/- 5.8 65.2 52.9-73.2 Pass ERW-52 01/08/18 Sr-90 39.7 +/- 2.3 39.2 28.2-45.1 Pass ERW-54 01/08/18 Ba-133 89.7 +/- 4.7 95.1 80.2 - 105 Pass ERW-54 01/08/18 Cs-134 53.9 +/- 3.8 52.6 42.4-57.9 Pass ERW-54 01/08/18 Cs-137 111 +/- 6.1 112 101 - 126 Pass ERW-54 01/08/18 Co-60 116 +/- 4.7 114 103 - 128 Pass ERW-54 01/08/18 Zn-65 292 +/- 14 277 249 - 324 Pass ERW-52 01/08/18 Gr. Alpha 70.1 +/- 3.0 72.4 38.1 - 89.2 Pass ERW-52 01/08/18 Gr. Beta 47.4 +/- 1.4 54.8 37.5 - 61.7 Pass ERW-58 01/08/18 1-131 25.3 +/- 1.0 28.1 23.4 - 33.0 Pass ERW-61 01/08/18 Ra-226 12.4 +/- 0.4 14.2 10.6 - 16.3 Pass ERW-60 01/08/18 Ra-228 4.9 +/- 0.8 4.21 2.4 - 5.8 Pass ERW-60 01/08/18 Uranium 52.2 +/- 0.9 58.6 47.8 - 64.5 Pass ERW-62 01/08/18 H-3 21,780+/-437 21,200 18,600 - 23,300 Pass ERW-2555 07/08/18 Sr-89 62.8 +/- 4.0 62.7 50.7 - 70.6 Pass ERW-2555 07/08/18 Sr-90 40.1+/-1.3 40.1 29.5 -46.1 Pass ERW-2557 07/08/18 Ba-133 23.1 +/- 2.3 25.6 19.9-29.0 Pass ERW-2557 07/08/18 Cs-134 15.2+/-1.7 15.7 11.4 - 18.2 Pass ERW-2557b 07/08/18 Cs-137 22.3 +/- 4.9 192 173 - 213 Fail ERW-2557 07/08/18 Co-60 110+/-3.7 119 107 - 133 Pass ERW-2557 07/08/18 Zn-65 190 +/- 7.5 177 159 - 208 Pass ERW-2559 07/08/18 Gr. Alpha 13.5 +/- 0.7 16.0 7.8 - 22.6 Pass ERW-2559 07/08/18 Gr. Beta 41.1 +/- 0.9 49.0 33.2 - 56.1 Pass ERW-2561 07/08/18 1-131 24.9 +/- 0.9 28.1 23.4 - 33.0 Pass ERW-2563 07/08/18 Ra-226 9.0 +/- 0.3 9.08 6.8 - 10.6 Pass ERW-2563 07/08/18 Ra-228 3.2 +/- 0.4 2.28 1.1 - 3.6 Pass ERW-2563 07/08/18 Uranium 38.2 +/- 1.4 51.8 42.2 - 57.1 Fail ERW-2565 07/08/18 H-3 21,039 +/- 302 20,400 17,900 - 22,400 Pass ERW-3832 10/07/18 Ba-133 57.0 +/- 3.1 54.9 45.0-61.0 Pass ERW-3832 10/07/18 Cs-134 79.2 +/- 3.0 81.8 67.0- 90.0 Pass ERW-3832 10/07/18 Cs-137 222 +/- 4.5 210 189-233 Pass ERW-3832 10/07/18 Co-60 67.7 +/- 3.5 64.5 107 - 133 Pass ERW-3832 10/07/18 Zn-65 274 +/- 3.0 245 220 - 287 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).

b A transcription error caused the Cs-137 result submitted to be understated by a factor of 10. The actual result obtained was slightly higher than the acceptance criteria for the study. A "Quick Response" proficiency test was analyzed to help determine the cause of the high result (see ERW-3932 above). No definitive cause for the previous high Cs-137 result was determined.

0 An investigation is underway to determine the reason for the unacceptable Uranium PT result.

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APPENDIX F ERRATA DATA

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There is no errata data for 2018.

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APPENDIX G ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)

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