Text

Annual Radiological Environmental Operating Report
	ML24131A030
Person / Time
Site:	Quad Cities
Issue date:	05/10/2024
From:	Hild D; Constellation Energy Generation
To:	; Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation, Document Control Desk
References
	SVP-24-034
	Download: ML24131A030 (1)
	v • d • e

Constellation..

SVP-24-034 May 10, 2024 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

Subject:

Quad Cities Nuclear Power Station, Units 1 and 2 Renewed Facility Operating License Nos. DPR-29 and DPR-30 NRC Docket Nos. 50-254 and 50-265 Annual Radiological Environmental Operating Report Pursuant to Technical Specifications Section 5.6.2, enclosed is the 2023 Radiological Environmental Operating Report for Quad Cities Nuclear Power Station. This Report contains the results of the Radiological Environmental Monitoring Program (REMP). In addition, the 2023 Radiological Groundwater Protection Program (RGPP) Report is included as Appendix F of Enclosure 1.

Should you have any questions concerning this letter, please contact Blake Young at (309) 227-3200.

Res&ully, ~~

DougH~

Site Vice President Quad Cities Nuclear Power Station : Annual Radiological Environmental Operating Report cc:

Regional Administrator - NRC Region Ill NRC Senior Resident Inspector-Quad Cities Nuclear Power Station Annual Radiological Environmental Operating Report

Docket No:

50-254 50-265 QUAD CITIES NUCLEAR POWER STATION UNITS 1 and 2 Annual Radiological Environmental Operating Report 1 January through 31 December 2023 Prepared By Teledyne Brown Engineering Environmental Services Constellation.

Quad Cities Nuclear Power Station Cordova, IL 61242 May 2024

Intentionally left blank

Table Of Contents I. Summary and Conclusions.............................................................................................. 1 II. Introduction...................................................................................................................... 3 A. Ojectives of the REMP......................................................................................... 3 B. Implementation of the Objectives........................................................................ 3 C. Radiation and Radioactivity................................................................................. 3 D. Sources of Radiation........................................................................................... 4 Ill. Program Description....................................................................................................... 6 A. Sample Collection................................................................................................ 6 B. Sample Analysis.................................................................................................. 7 C. Data Interpretation............................................................................................... 8 D. Program Exceptions............................................................................................ 9 E. Program Changes............................................................................................. 1 O IV. Results and Discussion............................................................................................... 11 A. Aquatic Environment......................................................................................... 11 1. Surface Water......................................................................................... 11

2. Ground Water......................................................................................... 11

3. Fish......................................................................................................... 12

4. Sediment................................................................................................. 12 B. Atmospheric Environment................................................................................. 12 1. Airborne.................................................................................................. 12

a. Air Particulates............................................................................. 12

b. Airborne Iodine............................................................................. 13

2. Terrestrial................................................................................................ 13

a. Milk............................................................................................... 13

b. Food Products.............................................................................. 13 C. Ambient Gamma Radiation............................................................................... 14 D. Independent Spent Fuel Storage...................................................................... 14 E. Land Use Survey............................................................................................... 14 F. Errata Data......................................................................................................... 15 G. Summary of Results - Inter-laboratory Comparison Program.......................... 15

Appendix A Tables Table A-1 Appendix B Tables Table B-1 Table B-2 Figures Figure B-1 Figure B-2 Appendix C Tables Table C-1.1 Table C-1.2 Table C-1.3 Table C-I1.1 Table C-I1.2 Appendices Radiological Environmental Monitoring Report Summary Radiological Environmental Monitoring Program Annual Summary for Quad Cities Nuclear Power Station, 2023 Location Designation, Distance & Direction, and Sample Collection &

Analytical Methods Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Quad Cities Nuclear Power Station, 2023 Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Quad Cities Nuclear Power Station, 2023 Quad Cities REMP Sampling Locations - 2 Mile Radius, 2023 Quad Cities REMP Sampling Locations - 9.3 Mile Radius, 2023 Data Tables and Figures - Primary Laboratory Concentrations of Gross Beta in Surface Water Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Concentrations of Tritium, lron-55 and Nickel-63 in Surface Water Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Concentrations of Tritium in Ground Water Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Concentrations of Gamma Emitters in Ground Water Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 ii

Table C-111.1 Concentrations of Gamma Emitters in Fish Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Table C-IV.1 Concentrations of Gamma Emitters in Sediment Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Table C-V.1 Concentrations of Gross Beta in Air Particulate Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Table C-V.2 Monthly and Yearly Mean Values of Gross Beta Concentrations In Air Particulate Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Table C-V.3 Concentrations of Gamma Emitters in Air Particulate Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Table C-Vl.1 Concentrations of 1-131 in Air Iodine Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Table C-Vll.1 Concentrations of 1-131 in Milk Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Table C-Vll.2 Concentrations of Gamma Emitters in Milk Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Table C-Vlll.1 Concentrations of Gamma Emitters in Food Product Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Table C-IX.1 Quarterly DLR Results for Quad Cities Nuclear Power Station, 2023 Table C-IX.2 Annual DLR Results Quad Cities Nuclear Power Station, 2023 Figures Figure C-1 Figure C-2 Figure C-3 Figure C-4 Figure C-5 Figure C-6 Figure C-7 Surface Water - Gross Beta - Stations Q-33 and Q-34 (C) Collected in the Vicinity of QCNPS, 2000 - 2023 Surface Water - Tritium - Stations Q-33 and Q-34 (C) Collected in the Vicinity of QCNPS, 2000 - 2023 Ground Water - Tritium - Stations Q-35 and Q-36 Collected in the Vicinity of QCNPS, 2000 - 2023 Air Particulates - Gross Beta - Stations Q-01 and Q-02 Collected in the Vicinity of QCNPS, 2000 - 2023 Air Particulates - Gross Beta - Stations Q-03 and Q-04 Collected in the Vicinity of QCNPS, 2000 - 2023.

Air Particulates - Gross Beta - Station Q-07 (C) Collected in the Vicinity of QCNPS, 2000 - 2010 Air Particulates - Gross Beta - Stations Q-13 and Q-16 Collected in the Vicinity of QCNPS, 2005 - 2023 iii

Figure C-8 Figure C-9 Appendix D Tables Table D-1 Table D-2 Table D-3 Appendix E Appendix F Air Particulates - Gross Beta - Stations Q-37 and Q-38 Collected in the Vicinity of QCNPS, 2005 - 2023 Air Particulates - Gross Beta - Stations Q-41 and Q-42 (C) Collected in the Vicinity of QCNPS, 2009 - 2023 Inter-Laboratory Comparison Program Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2023 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering, 2023 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2023 Errata Data Annual Radiological Groundwater Protection Program Report (ARGPPR) iv

I.

Summary and Conclusions In 2023, the Quad Cities Generating Station released to the environment through the radioactive effluent gaseous pathways, approximately 79.0 curies of noble gas, 1.57E-03 curies of fission and activation products, 28.3 curies of carbon-14 and 96.0 curies of tritium. The dose from both gaseous effluents was conservatively calculated for the Maximum Exposed Member of the Public. In 2023, Quad Cities Generating Station released to the environment, through the radioactive liquid effluent pathway, approximately 9.38E-01 curies of tritium and 3.49E-04 curies of fission and activation products. The results of those calculations and their comparison to the allowable limits were as follows:

NOTE: Percent of applicable limits are for Unit 1 and Unit 2 combined (Site)

Gaseous and Liquid Radiation Doses to Members of the Public at Locations Applicable Estimated Age Location

%Of Distance Direction Applicable Site Limit Unit Effluents Organ Dose Group (meters)

(toward)

Limit Noble Gas Gamma - Air Dose 9.14E-04 All 1029 NNE 4.57E-03 20 mRad Noble Gas Beta - Air Dose 4.66E-04 All 1029 NNE 1.17E-03 40 mRad Iodine, Particulate Total Body 4.51E-02 Child 1029 NNE 1.80E-01 25 mrem C-14& Tritium Iodine, Particulate Thyroid 9.07E-01 Infant 1029 NNE 3.02E+00 30 mrem C-14& Tritium Liquid Total Body 5.60E-05 Adult Mississippi River 9.33E-04 6

mrem Liquid Liver 5.19E-05 Teen Mississippi River 2.60E-04 20 mrem Skyshine Total Body 7.51E+OO All 800 N

3.00E+01 25 mrem 40CFR190 Total Body (Gas+

7.54E+OO All 800 N

3.01E+01 25 mrem Liq+ Skyshine)

The doses as a result of the radiological effluents released from the Quad Cities Generating Station were a very small percentage of the allowable limits, with the exception of 40CFR190 whole body radiation which was calculated to be 30.1 % of the 25 mrem/yr limit. The largest component of 40CFR 190 dose is attributable to BWR skyshine from N-16. This value is conservatively calculated for the hypothetical maximum exposed member of the public.

Nitrogen-16 (N-16) is a byproduct of Hydrogen addition into the Reactor Coolant System (RCS). Hydrogen addition is performed to maintain RCS chemistry parameters that reduce corrosion potential. Due to its short half-life (7.13 seconds),

N-16 is not detectable as a plant effluent as it decays prior to reaching gaseous discharge pathways. Additionally, this dose is conservatively calculated instead of measured because an annual dose of 7.489E+00 mrem is too low to be reliably detected on the environmental dosimetry utilized by the station.

This report on the Radiological Environmental Monitoring Program (REMP) conducted for the Quad Cities Nuclear Power Station (QCNPS) by Constellation covers the period 01 January 2023 through 31 December 2023. During that time period, 1,486 analyses were performed on 1,375 samples. In assessing all the data gathered for this report and comparing these results with preoperational data, it was concluded that the operation of QCNPS had no adverse radiological impact on the environment.

Surface water samples were analyzed for concentrations of gross beta, tritium, iron, nickel and gamma emitting nuclides. Ground water samples were analyzed for concentrations of tritium and gamma emitting nuclides. No fission or activation products were detected. Gross beta activities detected were consistent with those detected in previous years and consistent with the control stations.

Fish (commercially and recreationally important species) and sediment samples were analyzed for concentrations of gamma emitting nuclides. No fission or activation products were detected above the required LLD in any fish or sediment samples.

Air particulate samples were analyzed for concentrations of gross beta and gamma emitting nuclides. No fission or activation products were detected.

High sensitivity iodine-131 (1-131) analyses were performed on air samples. No 1-131 was detected.

Cow milk samples were analyzed for concentrations of 1-131 and gamma emitting nuclides. No 1-131 was detected. Concentrations of naturally occurring isotopes (K-40 averaging 1,096 pCi/L) were consistent with those detected in previous years.

No fission or activation products were detected.

Food product samples were analyzed for concentrations of gamma emitting nuclides. No fission or activation products were detected.

Environmental gamma radiation measurements were performed quarterly using Optically Stimulated Luminescence Dosimeters (OSLO). Beginning in 2012, Constellation (formerly Exelon) changed the type of dosimetry used for the Radiological Environmental Monitoring Program (REMP). Optically Stimulated Luminescent Dosimeters were deployed and Thermoluminescent Dosimeters (TLD) were discontinued. The relative comparison to control locations remains valid.

OSLD technology is different than that used in a TLD but has the same purpose (to measure direct radiation).

II.

Introduction The Quad Cities Nuclear Power Station (QCNPS), consisting of two 2,957 MWth boiling water reactors owned and operated by Constellation Energy Corporation, is located in Cordova, Illinois along the Mississippi River. Unit No.1 went critical on 16 March 1972. Unit No. 2 went critical on 02 December 1973. The site is located in northwestern Illinois, approximately 182 miles west of Chicago, Illinois.

This report covers those analyses performed by Teledyne Brown Engineering (TBE) and Landauer on samples collected during the period 1 January 2023 through 31 December 2023.

A.

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

1. Provide data on measurable levels of radiation and radioactive materials in the site environs

2.

Evaluate the relationship between quantities of radioactive material released from the plant and resultant radiation doses to individuals from principal pathways of exposure B.

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

1.

Identifying significant exposure pathways

2.

Establishing baseline radiological data of 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.

Radiation and Radioactivity All matter is made of atoms. An atom is the smallest part into which matter can be broken down and still maintain all its chemical properties. Nuclear radiation is energy, in the form of waves or particles that is given off by unstable, radioactive atoms. Radioactive material exists naturally and has always been a part of our environment. The earth's crust, for example, contains radioactive uranium, radium, thorium and potassium. Some radioactivity is a result of nuclear weapons testing. Examples of radioactive fallout that is normally present in environmental samples are cesium-137 and strontium-90. Some examples of radioactive materials released from a nuclear power plant are cesium-137, iodine-131, strontium-90 and cobalt-60.

Radiation is measured in units of millirem; much like temperature is measured in degrees. A millirem is a measure of the biological effect of the energy deposited in tissue. The natural and man-made radiation dose received in one year by the average American is 300 to 400 mrem (References 2, 3, 4 in Table I1.D-1 below). Radioactivity is measured in curies. A curie is that amount of radioactive material needed to produce 37,000,000,000 nuclear disintegrations per second. This is an extremely large amount of radioactivity in comparison to environmental radioactivity.

That is why radioactivity in the environment is measured in picocuries. One picocurie is equal to one trillionth of a curie.

D.

Sources of Radiation As mentioned previously, naturally occurring radioactivity has always been a part of our environment. Table II D-1 shows the sources and doses of radiation from natural and man-made sources.

Table 11.0-1 Radiation Sources and Corresponding Dose <1>

NATURAL MAN-MADE Source Radiation Dose Source Radiation Dose (millirem/year)

(millirem/year)

Internal, inhalation <2>

228 Medical <3>

300 External, space 33 Consumer <4>

13 Internal, ingestion 29 lndustrial<5>

0.3 External, terrestrial 21 Occupational 0.5 Weapons Fallout

<1 Nuclear Power Plants

<1 Approximate Total 311 Approximate Total 314 (1) Information from NCRP Reports 160 and 94 (2) Primarily from airborne radon and its radioactive progeny (3) Includes CT (147 mrem), nuclear medicine (77 mrem), interventional fluoroscopy (43 mrem) and conventional radiography and fluoroscopy (33 mrem)

(4) Primarily from cigarette smoking (4.6 mrem), commercial air travel (3.4 mrem), building materials (3.5 mrem), and mining and agriculture (0.8 mrem)

(5) Industrial, security, medical, educational, and research Cosmic radiation from the sun and outer space penetrates the earth's atmosphere and continuously bombards us with rays and charged particles.

Some of this cosmic radiation interacts with gases and particles in the atmosphere, making them radioactive in turn. These radioactive byproducts from cosmic ray bombardment are referred to as cosmogenic radionuclides.

Isotopes such as beryllium-7 and carbon-14 are formed in this way.

Exposure to cosmic and cosmogenic sources of radioactivity results in about 33 mrem of radiation dose per year.

Additionally, natural radioactivity is in our body and in the food we eat (about 29 millirem/yr), the ground we walk on (about 21 millirem/yr) and the air we breathe (about 228 millirem/yr). The majority of a person's annual dose results from exposure to radon and thoron in the air we breathe. These gases and their radioactive decay products arise from the decay of naturally occurring uranium, thorium and radium in the soil and building products such as brick, stone and concrete. Radon and thoron levels vary greatly with location, primarily due to changes in the concentration of uranium and thorium in the soil. Residents at some locations in Colorado, New York, Pennsylvania, and New Jersey have a higher annual dose as a result of higher levels of radon/thoron gases in these areas. In total, these various sources of naturally occurring radiation and radioactivity contribute to a total dose of about 311 mrem per year.

In addition to natural radiation, we are normally exposed to radiation from a number of man-made sources. The single largest doses from man-made sources result from therapeutic and diagnostic applications of x-rays and radiopharmaceuticals. The annual dose to an individual in the U.S. from medical and dental exposure is about 300 mrem. Consumer products, such as televisions and smoke detectors, contribute about 13 mrem/yr. Much smaller doses result from weapons fallout (less than 1 mrem/yr) and nuclear power plants. Typically, the average person in the United States receives about 314 mrem per year from man-made sources.

Ill.

Program Description A.

Sample Collection Samples for the QCNPS REMP were collected for Constellation by A Tl Environmental Inc. (Midwest Labs). This section describes the general sampling methods used by Environmental Inc. to obtain environmental samples for the QCNPS REMP in 2023. Sample locations and descriptions can be found in Table B-1 and Figures B-1 and B-2, Appendix B.

Aquatic Environment The aquatic environment was evaluated by performing radiological analyses on samples of surface water, ground water, fish and sediment. Surface water samples were collected weekly from two locations, Q-33 and Q-34 (Control).

Ground water samples were collected quarterly from two locations, Q-35 and Q-36. All water samples were collected in new containers, which were rinsed with source water prior to collection.

Fish samples comprising the edible portions of commercially and recreationally important species were collected semiannually at two locations, Q-24 and Q-29 (Control). Sediment samples composed of recently-deposited substrate were collected at two locations semiannually, Q-39 and Q-40 (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 at ten locations (Q-01, Q-02, Q-03, Q-04, Q-13, Q-16, Q-37, Q-38, Q-41 and Q-42 (control)).

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

Terrestrial Environment The terrestrial environment was evaluated by performing radiological analyses on samples of milk and food product. Milk samples were collected biweekly at one location (Q-26) from May through October, and monthly from November through April. All samples were collected in new plastic containers from the bulk tank, preserved with sodium bisulfite, and shipped promptly to the laboratory.

Food products were collected annually in July at five locations (Q-Control, Q-Quad 1, Q-Quad 2, Q-Quad 3, and Q-Quad 4). Various types of broadleaf and root vegetables were collected and placed in new plastic bags and sent to the laboratory for analysis.

Ambient Gamma Radiation Beginning in 2012, Constellation (formerly Exelon) changed the type of dosimetry used for the Radiological Environmental Monitoring Program (REMP). Optically Stimulated Luminescent Dosimeters (OSLO) were deployed and Thermoluminescent Dosimeters (TLD) were discontinued. The relative comparison to control locations remains valid. OSLO technology is different than that used in a TLD but has the same purpose (to measure direct radiation).

Each location consisted of 2 OSLO sets. The OSLO locations were placed on and around the QCNPS site as follows:

An inner ring consisting of 15 locations (Q-101, Q-102, Q-103, Q-104, Q-105, Q-106, Q-107, Q-108, Q-109, Q-111, Q-112, Q-113, Q-114, Q-115 and Q-116). These OSLDs are located in 15 of the 16 meteorological sectors in the general area of the site boundary (approximately 0.1 - 3 miles from the site).

There are no OSLDs located in the SSW sector because this sector is located over water.

An outer ring consisting of 16 locations (Q-201, Q-202, Q-203, Q-204, Q-205, Q-206, Q-207, Q-208, Q-209, Q-210, Q-211, Q-212, Q-213, Q-214, 0-215 and Q-216). These OSLDs are located in each of the 16 meteorological sectors (approximately 6.0 - 8.0 km from the site).

An other set consisting of 9 locations (Q-01, Q-02, Q-03, Q-04, Q-13, Q-16, Q-37, Q-38 and Q-41 ). The locations are at each of the air sample stations around the site.

The balance of one location (Q-42) is the control site.

The specific OSLO locations were determined by the following criteria:

1. The presence of relatively dense population;

2.

Site meteorological data taking into account distance and elevation for each of the sixteen 22.5 degree sectors around the site, where estimated annual dose from QCNPS, if any, would be most significant;

3.

On hills free from local obstructions and within sight of the stack (where practical);

4.

Near the closest dwelling to the stack in the prevailing downwind direction.

The OSLDs were exchanged quarterly and sent to Landauer for analysis.

B.

Sample Analysis This section describes the general analytical methodologies used by TBE to analyze the environmental samples for radioactivity for the QCNPS REMP in 2023 and the type of analyses. The analytical procedures used by the TBE laboratory are listed in Table B-2.

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

1.

Concentrations of beta emitters in surface water and air particulates

2. Concentrations of gamma emitters in ground and surface water, air particulates, milk, fish, sediment and vegetation

3.

Concentrations of tritium (H-3) in ground and surface water

4.

Concentrations of 1-131 in air and milk

5.

Ambient gamma radiation levels at various site environs

6.

Concentrations of iron-55 (Fe-55) and nickel-63 (Ni-63) in surface water C.

Data Interpretation The radiological and direct radiation data collected prior to Quad Cities Nuclear Power Station becoming operational were used as a baseline with which these operational data were compared. For the purpose of this report, Quad Cities Nuclear Power Station was considered operational at initial criticality. In addition, data were compared to previous years' operational data for consistency and trending. 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 an a priori (a before the fact) estimate of a system (including instrumentation, procedure and sample type) and not as an a posteriori (after the fact) criteria for the presence of activity. All analyses were designed to achieve the required QCNPS detection capabilities for environmental sample analysis.

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

2.

Net Activity Calculation and Reporting of Results Net activity for a sample is 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 effecting a negative number. An MDC is reported in all cases where positive activity was not detected.

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

For surface water, groundwater and vegetation 12 nuclides, manganese-54 (Mn-54), cobalt-58 (Co-58), iron-59 (Fe-59),

colbalt-60 (Co-60), zinc-65 (Zn-65), zirconium-95 (Zr-95),

niobium-95 (Nb-95), 1-131, cesium-134 (Cs-134), Cs-137, barium-140 (Ba-140), and lanthanum-140 (La-140) were reported.

For fish, sediment, air particulate and milk 11 nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-134, Cs-137 and Ba-140 and La-140 were reported.

For air iodine, one nuclide, 1-131 was 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 2023 the QCNPS REMP had a sample recovery rate in excess of 97.7%.

Sample anomalies and missed samples are listed in the tables below:

Table D-1 LISTING OF SAMPLE ANOMALIES Sample Location Collection Reason Type Code(s)

Date Al Q-01 02/24/23 Charcoal canister stuck in holder and was damaged during removal.

AP/Al Q-03 02/24/23 Timer indicated 142.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> for the 7-day collection period due to power loss and subseauent restoration.

AP Q-02 04/07/23 Filter washed off by heavy rain.

AP Q-37 09/15/23 Filter washed off by heavy rain.

Table D-2 LISTING OF MISSED SAMPLES Sample Location Collection Reason Type Code(s)

Date(s)

Al Q-01 01/06/23 Defective iodine cartridge caused damaged sample during removal.

AP/Al Q-03 01/06/23 Pump stopped working shortly after media swap on 01/06;

- 02/17/23 no samples taken for 7 weeks.

SW Q-33 01/06/23 No samples, water frozen.

Q-34

- 02/24/23 AP Q-02 03/17/23 Filter was damaged upon removal.

AP/Al Q-42 06/09/23 Sample train found detached due to vibrations causing 06/24/23 blank filter.

AP ALL Stations 06/30/23 Samples and collection sheets lost by carrier.

OSLO Q-116-3/3A 3rd Qtr, 2023 OSLO found missing in field; premises searched unsuccessfully.

Q-111-2/2A OSLO found missing in field premises searched OSLO and 4th Qtr, 2023 Q-112-1 unsuccessfully.

Quad Cities' onsite REMP Air Sampler, Q-03, was found tripped between sampling periods of August 5th and August 12th, 2022. The breaker feeding the air sampler was reset and the Q-03 air sampler pump restarted. The following sample period, the Q-03 REMP Air Sampler was found tripped again due to a plant breaker being tripped. Electrical maintenance further identified that there was a break in power somewhere between the feed from the breaker to the Q-03 Air Sampler.

During the time the Q-03 REMP Air Sampler was not running, permanent solutions for Q-03 power repair were explored. Quotes from multiple vendors resulted in unexpectedly high expenses for both permanent and temporary power solutions. To satisfy requirements of Quad Cities' ODCM, Q-03 REMP Air Sampler was temporarily relocated. The relocation is within the same D/Q sector. Sampling was restarted at the temporary location between December 9th and December 16th, 2022 sampling periods. Q-03 REMP Air Sampler is currently running at the temporary location while ongoing permanent power solutions are pursued.

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 program changes in 2023.

IV.

Results and Discussion A.

Aquatic Environment

1. Surface Water Samples were taken weekly and composited monthly at two locations (Q-33 and Q-34). Of these locations only Q-33, located downstream, could be affected by Quad Cities' effluent releases. The following analyses were performed:

Gross Beta Samples from all locations were analyzed for concentrations of gross beta (Table C-1.1, Appendix C). Gross beta activity was detected in 17 of 20 samples. The values ranged from 2.5 to 6.9 pCi/L. Concentrations detected were consistent with those detected in previous years (Figure C-1, Appendix C). The required LLD was met.

Tritium Quarterly composites of weekly collections were analyzed for tritium activity (Table C-1.2, Appendix C). No tritium activity was detected (Figure C-2, Appendix C). The 2000 pCi/L ODCM and contractually-required 200 pCi/L LLDs were met.

lron-55 and Nickel-63 Quarterly composites of monthly collections were analyzed for Fe-55 and Ni-63 (Table C-1.2, Appendix C). No Fe-55 or Ni-63 were detected. The required LLDs were met.

Gamma Spectrometry Samples from both locations were analyzed monthly for gamma emitting nuclides (Table C-1.3, Appendix C). No nuclides associated with QCNPS were detected and all required LLDs were met.

2.

Ground Water Quarterly grab samples were collected at two locations (Q-35 and Q-36).

Both locations could be affected by Quad Cities' effluent releases. The following analyses were performed:

Tritium Quarterly grab samples from the locations were analyzed for tritium activity (Table C-11.1, Appendix C). No tritium activity was detected (Figure C-3, Appendix C). The 2000 pCi/L OCDM and contractually-required 200 pCi/L LLDs were met.

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-11.2, Appendix C). No nuclides associated with QCNPS were detected and all required LLDs were met.

3.

Fish Fish samples comprised of various commercially and recreationally important species were collected at two locations (Q-24 and Q-29) semiannually. Location Q-24 could be affected by Quad Cities' effluent releases. The following analysis was performed:

Gamma Spectrometry The edible portion of fish samples from both locations were analyzed for gamma emitting nuclides (Table C-111.1, Appendix C). No nuclides associated with QCNPS were detected and all required LLDs were met.

4.

Sediment Aquatic sediment samples were collected at two locations (Q-39 and Q-40) semiannually. The location Q-39, located downstream, could be affected by Quad Cities' effluent releases. The following analysis was performed:

Gamma Spectrometry Sediment samples from Q-39 and Q-40 were analyzed for gamma emitting nuclides (Table C-IV.1, Appendix C). No nuclides potentially associated with QCNPS were detected and all required LLDs were met.

B.

Atmospheric Environment

1. Airborne

a.

Air Particulates Continuous air particulate samples were collected from ten locations on a weekly basis. The ten locations were separated into three groups: Near-field samplers within 4 km (2.5 miles) of the site (Q-01, Q-02, Q-03 and Q-04), far-field samplers between 4 and 10 km (2.5 - 6.2 miles) from the site (Q-13, Q-16, Q-37, Q-38 and Q-41) and the Control sampler between 10 and 30 km (6.2 - 18.6 miles) from the site (Q-42). The following analyses were performed:

Gross Beta Weekly samples were analyzed for concentrations of beta emitters.

(Table C-V.1 and C-V.2, Appendix C)

Comparison of results among the four groups aid in determining the effects, if any, resulting from the operation of QCNPS. The results from the near-field locations (Group I) ranged from 5 to 46E-03 pCi/m3 with a mean of 19E-03 pCi/m3. The results from the far-field locations (Group II) ranged from 5 to 51 E-03 pCi/m3 with a mean of 1 BE-03 pCi/m3* The results from the Control location (Group Ill) ranged from 5 to 46E-03 pCi/m3 with a mean of 19E-03 pCi/m3.

Comparison of the 2023 air particulate data with previous year's data indicate no effects from the operation of QCNPS.

In addition, comparisons of the weekly mean values for 2023 indicate no notable differences among the three groups.

(Figures C-4 through C-9, Appendix C)

Gamma Spectrometry Weekly samples were composited quarterly and analyzed for gamma emitting nuclides (Table C-V.3, Appendix C). No nuclides associated with QCNPS were detected and all required LLDs were met.

b.

Airborne Iodine Continuous air samples were collected from ten locations (Q-01, Q-02, Q-03, Q-04, Q-13, Q-16, Q-37, Q-38, Q-41 and Q-42) and analyzed weekly for 1-131 (Table C-Vl.1, Appendix C). All results were less than the LLD for 1-131.

2. Terrestrial

a.

Milk Samples were collected from one location (Q-26) biweekly May through October and monthly November through April. The following analyses were performed:

lodine-131 Milk samples from the location were analyzed for concentrations of 1-131 (Table C-Vll.1, Appendix C). No 1-131 was detected and the LLD was met.

Gamma Spectrometry Each milk sample was analyzed for concentrations of gamma emitting nuclides (Table C-Vll.2, Appendix C). No nuclides associated with QCNPS were detected and all required LLDs were met.

b. Food Products Food product samples were collected at four locations plus a control location (Q-Control, Q-Quad 1, Q-Quad 2, Q-Quad 3 and Q-Quad 4) annually during growing season. Four locations, (Q-Quad 1, Q-Quad 2, Q-Quad 3 and Q-Quad 4) could be affected by Quad Cities' effluent releases. The following analysis was performed:

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-Vlll.1, Appendix C). No nuclides associated with QCNPS were detected and all required LLDs were met.

C.

Ambient Gamma Radiation Ambient gamma radiation levels were measured utilizing optically stimulated luminescence dosimeters. Forty-one OSLO locations were established around the site. Results of OSLO measurements are listed in Tables C-IX.1 and C-IX.2, Appendix C.

All of the OSLO measurements were < 18 mRem/quarter, with a range of -0.3 to 17.9 mRem/quarter. A comparison of the Inner Ring, Outer Ring and Other data to the Control Location data, indicate that the ambient gamma radiation levels from all the locations were comparable.

D.

Independent Spent Fuel Storage Installation QCNPS commenced use of an Independent Spent Fuel Storage Installation (ISFSI) in Dec 2005. There are no measurable changes in ambient gamma radiation levels as a result of ISFSI operations.

E.

Land Use Survey A Land Use Survey conducted during August 2023 around QCNPS was performed by ATI Environmental Inc. (Midwest Labs) for Constellation to comply with the Quad Cities' Offsite Dose Calculation Manual. The purpose of the survey was to document the nearest resident and milk producing animals in each of the sixteen 22.5 degree sectors around the site. The results from the land use census have not identified any locations, which yield a calculated dose or dose commitment, via the same pathway, that is at least 20% greater than at a location from which samples are currently being obtained. The results of this survey are summarized below:

Sector A

N B

NNE C

NE D

ENE E

E F

ESE G

SE H

SSE J

s K

SSW L

SW M

WSW N

w p

WNW Q

NW R

NNW Distance in Miles from QCNPS Residence Livestock Miles Miles 0.60 1.20 3.1 1.30 3.2 2.90 2.9 2.00 5.5 2.80 3.1 1.70 5.3 1.10 4.5 0.75 3.20 3.5 2.90 3.3 2.20 2.7 2.60 4.3 2.70 3.8 2.60 4.7 2.10 2.2 Milk Farm Miles 3.1 6.6 Of the above listed Milk Farms, only the farm located at 3.1 miles ESE of QCNPS, listed in the sample results section as Bill Stanley Dairy, has elected to participate in the QCNPS REMP program. Participation by local farmers is voluntary.

F.

Errata Data There is no errata data for 2023.

G.

Summary of Results - Inter-Laboratory Comparison Program The TSE Laboratory analyzed Performance Evaluation (PE) samples of air particulate (AP), air iodine, milk, soil, vegetation, and water matrices that represent test & matrix combinations available for REMP programs. The PE samples supplied by Analytics Inc., Environmental Resource Associates (ERA) and Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP), were evaluated against the following pre-set acceptance criteria:

A.

Analytics Evaluation Criteria Analytics' evaluation report provides a ratio of 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 limits are established per the US EPA, 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 TSE laboratory, 124 out of 131 analyses performed met the specified acceptance criteria. Seven analyses did not meet the specified acceptance criteria and were addressed through the TSE Corrective Action Program. A summary is found below:

1.

The MAPEP February 2023 Soil Ni-63 result was evaluated as Not Acceptable. TSE's reported values was 294 Sq/kg and the known result was 1130 Sq/kg (range 791 -1469). The sample was reprepped by a different (senior) lab technician with results of 1120 & 1250 Bq. It was determined that there was a difference between the two techs during the sample prep (technique) and the procedure was revised to reflect these differences including using a specific aliquot amount. (NCR 23-08)

2.

The MAPEP February 2023 vegetation Sr-90 result was evaluated as Not Acceptable. The reported value was 0.05 Bq (not detected) and the known result was a "false positive". This was considered to be a statistical failure because TSE's reported result with 3 times the uncertainty resulted in a slightly positive net result (0.03194 Bq/kg). The reported result was significantly below TSE's average detection limit for vegetation samples. (NCR 23-09)

3.

The ERA RAD April 2023 water Sa-133 result was evaluated as Not Acceptable. The reported value was 26.0 pCi/L and the known was 22.3 (acceptance range 17.1 - 25.8 pCi) or 117% of the known (acceptable for TSE QC). The sample was used as the workgroup duplicate with a result of 25.4 (114%). The sample had also been counted on a different detector with a result of 21.9 (98%). This was TSE's first failure for Ba-133. (NCR 23-10)

4.

The MAPEP August 2023 soil Fe-55 result was evaluated as Not Acceptable. The reported value was 346 Sq/kg and the known result was 1280 (acceptance range of 896-1664 Bq/kg). This was TSE's initial evaluation for Fe-55 in soils. The result was received at the end of December and the root cause is under investigation. No client samples were associated with this cross-check. (CAR 23-31)

5.

The Analytics September 2023 milk Sr-90 result was evaluated as Not Acceptable. The reported result was 7.28 pCi/L and the known result was 12.8 (57% of known). This sample was used as the workgroup duplicate and the carrier yields for both samples were 107% and 75%.

The LCS recovery for the workgroup was at 106%. The ERA drinking water Sr-90 cross check that was analyzed around the same time was acceptable at 108%. There was no explanation for the failure. This is the first low biased failure for Sr-90 milk. The last failure (high) was in 2016. (NCR 23-24)

6.

The ERA RAD October 2023 water Gross Alpha result was evaluated as Not Acceptable. The reported result was 53.2 pCi/L and the known result was 70.6 (acceptable range of 54.0 - 87.2 pCi/L). The reported result was the workgroup duplicate and was within 75% of the known value (within TBE QC range). The original result was 63.3 pCi/L (90% of the known). Because the LCS result was biased slightly high, the decision was made to report the lower value. (NCR 23-20)

7.

The ERA RAD October 2023 water 1-131 result was evaluated as Not Acceptable. The reported value was 23.5 pCi/L and the known result was 29.7 (acceptable range of 25.8 -33.6) The reported result was 79%

of the known, which is within the acceptable TBE QC range. The workgroup was reviewed with no anomalies found. The LCS/LCSD results were 109% and 86.1%. The sample was not processed in a timely manner as per the ERA instructions which stated to analyze shortly after receipt due to the short half-life. Going forward, the QA &/or Lab Mgr. will ensure that this analysis is started sooner. (NCR 23-21)

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

Intentionally left blank

APPENDIX A RADIOLOGICAL ENVIRONMENT AL MONITORING REPORT

SUMMARY

Intentionally left blank

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR QUAD CITIES NUCLEAR POWER STATION, 2023 NAME OF FACILITY:

QUAD CITIES DOCKET NUMBER:

50-254 &50-265 LOCATION OF FACILITY:

CORDOVA, IL REPORTING PERIOD:

2023 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)

STATION#

NON ROUTINE (UNITOF ANALYSIS ANALYSIS OF DETECTION (F)

(F)

NAME REPORTED MEASUREMENT)

PERFORMED PERFORMED (LLD)

RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENTS SURFACE WATER GR-B 20 4

4.5 4.4 4.5 Q-33 INDICATOR 0

(PCIA.ITER)

(8/10)

(9/10)

(8/10)

CORDOVA 2.9-6.9 2.5 - 6.4 2.9-6.9 3.1 MILES SSW OF SITE H-3 8

2000

<LLD

<LLD 0

FE-55 8

200

<LLD

<LLD 0

Nl-63 8

5

<LLD

<LLD 0

GAMMA 20 MN-54 15

<LLD

<LLD 0

l>

C0-58 15

<LLD

<LLD 0

FE-59 30

<LLD

<LLD 0

C0-60 15

<LLD

<LLD 0

ZN-65 30

<LLD

<LLD 0

NB-95 15

<LLD

<LLD 0

ZR-95 30

<LLD

<LLD 0

/-131 15

<LLD

<LLD 0

CS-134 15

<LLD

<LLD 0

CS-137 18

<LLD

<LLD 0

BA-140 60

<LLD

<LLD 0

LA-140 15

<LLD

<LLD 0

GROUND WATER H-3 8

2000

<LLD NA 0

(PCIA..ITER)

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

ZR-95 30

<LLD NA 0

1-131 15

<LLD NA 0

CS-134 15

<LLD NA 0

CS-137 18

<LLD NA 0

BA-140 60

<LLD NA 0

LA-140 15

<LLD NA 0

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

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR QUAD CITIES NUCLEAR POWER STATION, 2023 NAME OF FACILITY:

QUAD CITIES DOCKET NUMBER:

50-254 &50-265 LOCATION OF FACILITY:

CORDOVA, IL REPORTING PERIOD:

2023 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)

STATION#

NON ROUTINE (UNITOF ANALYSIS ANALYSIS OF DETECTION (F)

(F)

NAME REPORTED MEASUREMENT}

PERFORMED PERFORMED (LLD)

RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENTS FISH GAMMA 8

(PCIIKG WET}

MN-54 130

<LLD

<LLD 0

CO-58 130

<LLD

<LLD 0

FE-59 260

<LLD

<LLD 0

C0-60 130

<LLD

<LLD 0

ZN-65 260

<LLD

<LLD 0

NB-95 NA

<LLD

<LLD 0

ZR-95 NA

<LLD

<LLD 0

CS-134 130

<LLD

<LLD 0

CS-137 150

<LLD

<LLD 0

BA-140 NA

<LLD

<LLD 0

J>

LA-140 NA

<LLD

<LLD 0

N SEDIMENT GAMMA 4

(PCIIKG DRY)

MN-54 NA

<LLD

<LLD 0

C0-58 NA

<LLD

<LLD 0

FE-59 NA

<LLD

<LLD 0

C0-60 NA

<LLD

<LLD 0

ZN-65 NA

<LLD

<LLD 0

NB-95 NA

<LLD

<LLD 0

ZR-95 NA

<LLD

<LLD 0

CS-134 150

<LLD

<LLD 0

CS-137 l80

<LLD

<LLD 0

BA-140 NA

<LLD

<LLD 0

LA-140 NA

<LLD

<LLD 0

AIR PARTICULATE GR-B 502 10 18.6 19.2 22.2 Q-38 INDICATOR 0

(E-3 PCVCU.METER)

(4461451)

(49151)

(50151)

FULLER ROAD 5-51 5-46 9-51 4.7 MILES E OF SITE (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 QUAD CITIES NUCLEAR POWER STATION, 2023 NAME OF FACILITY:

QUAD CITIES DOCKET NUMBER:

50-254 &50-265 LOCATION OF FACILITY:

CORDOVA, IL REPORTING PERIOD:

2023 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)

STATION#

NONROUTINE (UNITOF ANALYSIS ANALYSIS OF DETECTION (F)

(F)

NAME REPORTED MEASUREMENT)

PERFORMED PERFORMED (LLD)

RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENTS AIR PARTICULATE GAMMA 40 (E-3 PCVCU.METER)

MN-54 NA

<LLD

<LLD 0

C0-58 NA

<LLD

<LLD 0

FE-59 NA

<LLD

<LLD 0

C0-60 NA

<LLD

<LLD 0

ZN-65 NA

<LLD

<LLD 0

NB-95 NA

<LLD

<LLD 0

ZR-95 NA

<LLD

<LLD 0

CS-134 50

<LLD

<LLD 0

CS-137 60

<LLD

<LLD 0

BA-140 NA

<LLD

<LLD 0

LA-140 NA

<LLD

<LLD 0

I w AIR IODINE GAMMA 512 (E-3 PCVCU.METER) 1-131 70

<LLD

<LLD 0

MILK 1-131 (LOW LVL) 20 1

<LLD NA 0

(PCIILITER)

GAMMA 20 MN-54 NA

<LLD NA 0

C0-58 NA

<LLD NA 0

FE-59 NA

<LLD NA 0

C0-60 NA

<LLD NA 0

ZN-65 NA

<LLD NA 0

NB-95 NA

<LLD NA 0

ZR-95 NA

<LLD NA 0

CS-134 15

<LLD NA 0

CS-137 18

<LLD NA 0

BA-140 60

<LLD NA 0

LA-140 15

<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 QUAD CITIES NUCLEAR POWER STATION, 2023 NAME OF FACILITY:

QUAD CITIES DOCKET NUMBER:

~254 &50-265 LOCATION OF FACILITY:

CORDOVA, IL REPORTING PERIOD:

2023 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)

STATION#

NON ROUTINE (UNITOF ANALYSIS ANALYSIS OF DETECTION (F)

(F)

NAME REPORTED MEASUREMENT)

PERFORMED PERFORMED (LLD)

RANGE RANGE RANGE DISTANCE AND DIRECTION MEASUREMENTS VEGETATION GAMMA 11 (PCIIKG WET)

MN-54 NA

<LLD

<LLD 0

C0-58 NA

<LLD

<LLD 0

FE-59 NA

<LLD

<LLD 0

C0-60 NA

<LLD

<LLD 0

ZN-65 NA

<LLD

<LLD 0

NB-95 NA

<LLD

<LLD 0

ZR-95 NA

<LLD

<LLD 0

1-131 60

<LLD

<LLD 0

CS-134 60

<LLD

<LLD 0

CS-137 80

<LLD

<LLD 0

J>

BA-140 NA

<LLD

<LLD 0

~

LA-140 NA

<LLD

<LLD 0

DIRECT RADIATION OSLD-QUARTERL Y 290 NA 6.8 10.6 11.2 Q-204-2 INDICATOR 0

(MILLI-ROENTGENIQTR.)

(286/286)

(4/4)

-0.3-17.9 8.9-11.B 7.8-17.9 4.5 MILES ENE (M) The Mean Values are calculated using the positive values, (FJ Fraction of detectable measurement are indicated in parentheses.

APPENDIXB LOCATION DESIGNATION, DISTANCE & DIRECTION, AND SAMPLE COLLECTION & ANALYTICAL METHODS

Intentionally left blank

TABLE B-1:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Quad Cities Nuclear Power Station, 2023 Location A. Surface Water Q-33 Q-34 B.

Ground/Well Water Location Description Cordova (indicator)

Camanche, Upstream (control)

Q-35 McMillan Well (indicator)

Q-36 Cordova Well (indicator)

C.

Milk - bi-weekly/ monthly Q-26 Bill Stanley Dairy (indicator)

D.

Air Particulates / Air Iodine Q-01 Q-02 Q-03 Q-04 Q-13 Q-16 Q-37 Q-38 Q-41 Q-42 E.

Fish Q-24 Q-29 F.

Sediment Q-39 Q-40 G.

Food Products Quadrant 1 Quadrant 2 Quadrant 3 Quadrant 4 Control Onsite 1 (indicator)

Onsite 2 (indicator)

Onsite 3 (indicator)

Nitrin (indicator)

Princeton (indicator)

Low Moor (indicator)

Meredosia Road (indicator)

Fuller Road (indicator)

Camanche, Upstream (indicator)

LeClaire (control)

Pool #14 of Mississippi River, Downstream (indicator)

Mississippi River, Upstream (control)

Cordova, Downstream on Mississippi River (indicator)

North of Albany, Upstream on Mississippi River (control)

Ken DeBaille Terry Young Amy Johnston James Fawcett Kenneth Roeder H.

Environmental Dosimetry - OSLO Inner Ring Q-101-1 / Q-101-1A Q-101-2 / Q-101-2A Q-102-1 / Q-102-1A Q-102-3 / Q-102-3A Q-103-1 / Q-103-1A Q-103-2 / Q-103-2A Q-104-1 / Q-104-1A Q-104-2 / Q-104-2A Q-105-1 / Q-105-1A Q-105-2 / Q-105-2A Q-106-2 / Q-106-2A Q-106-3 / Q-106-3A Q-107-2 / Q-107-2A Q-107-3 / Q-107-3A Q-108-1 / Q-108-1A Q-108-2 / Q-108-2A Q-109-1 / Q-109-1A Q-109-2 / Q-109-2A Q-111-1 /Q-111-1A Q-111-2 / Q-111-2A B-1 Distance & Direction From Site 3.1 miles SSW 4.4 miles NNE 1.5 miles S 3.3 miles SSW 3.1 miles ESE 0.5 miles N 0.4 miles ENE 0.6 miles S 1.7 miles NE 4.7miles SW 5.7 miles NNW 4.4 miles ENE 4.7 miles E 4.3 miles NNE 9.1 miles SSW 0.5 miles SW 1.0 miles N 0.8 miles SSW 8.9 miles NE 2.3 miles ENE 3.0 miles ESE 1.8 miles S 4.5 miles NW 9.5 miles NE 0.6 miles N 0.9 miles N 1.3 miles NNE 1.4 miles NNE 1.2 miles NE 1.2 miles NE 1.1 miles ENE 0.9 miles ENE 0.8 miles E 0.8 miles E 0.7 miles ESE 0.7 miles ESE 0.7 miles SE 0.8 miles SE 1.0 miles SSE 0.9 miles SSE 0.9 miles S 1.2 miles S 2.6miles SW 2.5miles SW

TABLE B-1 :

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Quad Cities Nuclear Power Station, 2023 Location Location Description Distance & Direction From Site H.

Environmental Dosimetry-OSLO (continued}

Inner Ring (continued}

Q-112-1 / Q-112-1A Q-112-2 / Q-112-2A Q-113-1 / Q-113-1A Q-113-2 / Q-113-2A Q-114-1 / Q-114-1A Q-114-2 / Q-114-2A Q-115-1 / Q-115-1A Q-115-2 / Q-115-2A Q-116-1 / Q-116-1A Q-116-3 / Q-116-3A Outer Ring Q-201-1 / Q-201-1A Q-201-2 / Q-201-2A Q-202-1 / Q-202-1A Q-203-1 / Q-203-1A Q-203-2 I Q-203-2A Q-204-1 / Q-204-1A Q-204-2 I Q-204-2A Q-205-1 / Q-205-1A Q-205-4 I Q-205-4A Q-206-1 / Q-206-1A Q-206-2 I Q-206-2A Q-207-1 I Q-207-1A Q-207-4 / Q-207-4A Q-208-1 I Q-208-1A Q-208-2 I Q-208-2A Q-209-1 / Q-209-1A Q-209-4 / Q-209-4A Q-210-1 / Q-210-1A Q-210-4* / Q-210-4A*

Q-210-5 / Q-210-5A Q-211-1 / Q-211-1A Q-211-2 / Q-211-2A Q-212-1 / Q-212-1A Q-212-2 / Q-212-2A Q-213-1 / Q-213-1A Q-213-2 I Q-213-2A Q-214-1 I Q-214-1A Q-214-2 / Q-214-2A Q-215-1 / Q-215-1A Q-215-2 / Q-215-2A Q-216-1 / Q-216-1A Q-216-2 / Q-216-2A Other Q-01-1 / Q-01-2 Q-02-1 I Q-02-2 Q-03-1 / Q-03-2 Q-04-1 / Q-04-2 Q-13-1 / Q-13-2 Q-16-1 / O-16-2 Q-37-1 / Q-37-2 Q-38-1 / Q-38-2 Q-41-1 / Q-41-2 Control Q-42-1 I Q-42-2 Onsite 1 (indicator)

Onsite 2 (indicator)

Onsite 3 (indicator)

Nitrin (indicator)

Princeton (indicator)

Low Moor (indicator)

Meredosia (indicator)

Fuller Road (indicator)

Camanche (indicator)

Leclaire

Removed from ODCM in December 2006 and replaced by Q-210-5. Q-210-4 is far trending only B-2 2.5milesWSW 2.2milesWSW 2.5milesW 2.5milesW 2.1 miles WNW 2.5milesWNW 2.6miles NW 2.3miles NW 2.3miles NNW 2.4 miles NNW 4.2 miles N 4.4 miles NNE 4.8 miles NNE 4.7 miles NE 5.0miles NE 4.7 miles ENE 4.5 miles ENE 4.7 miles E 4.8 miles E 4.8 miles ESE 4.8 miles ESE 4.7 miles SE 4.7 miles SE 4.3 miles SSE 4.9 miles SSE 4.7 miles S 4.7 miles S 4.1 milesSWW 4.1 miles SSW 3.3 miles SSW 4.5 miles SW 4.5 miles SW 5.4milesWSW 4.4milesWSW 4.3 miles W 4.8 miles W 4.7milesWNW 4.4milesWNW 5.0 miles NW 4.2 miles NW 4.6miles NNW 4.3 miles NNW 0.5 miles N 0.4 miles ENE 0.6 miles S 1.7 miles NE 4.7miles SW 5.7 miles NNW 4.4 miles ENE 4.7 miles E 4.3 miles NNE 9.1 miles SSW

TABLE B-2:

Sample Medium Surface Water Surface Water Surface Water Surface Water Ground Water Ground Water Fish Sediment Air Particulates Air Particulates Air Iodine Milk Milk Food Products OSLO Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Quad Cities Nuclear Power Station, 2023 Analysis Sampling Method Analytical Procedure Number Gamma Monthly composite from TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy weekly grab samples Gross Beta Monthly composite from TBE, TBE-2008 Gross Alpha and/or gross beta activity in various weekly grab samples matrices Tritium Quarterly composite from TBE, TBE-2011 Tritium analysis in drinking water by liquid scintillation weekly grab samples Iron and Nickel Quarterly composite from TBE, TBE-2006 lron-55 in various matrices weekly grab samples TBE, TBE-2013 Radionickel in various matrices Gamma Quarterly grab samples TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy Tritium Quarterly grab samples TBE, TBE-2011 Tritium analysis in drinking water by liquid scintillation Gamma Semi-annual samples Spectroscopy collected via electroshocking TBE-2007 Gamma emitting radioisotope analysis or other techniques Gamma Semi-annual grab samples TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy One-week composite of Gross Beta continuous air sampling TBE, TBE-2008 Gross Alpha and/or gross beta activity in various through glass fiber filter matrices paper Gamma Quarterly composite of each TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy station Gamma Weekly composite of Spectroscopy continuous air sampling TBE, TBE-2007 Gamma emitting radioisotope analysis through charcoal filter Bi-weekly grab sample when 1-131 cows are on pasture.

TBE, TBE-2012 Radioiodine in various matrices Monthly all other times Gamma Bi-weekly grab sample when Spectroscopy cows are on pasture.

TBE, TBE-2007 Gamma emitting radioisotope analysis Monthly all other times Gamma Annual grab samples TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy Optically Quarterly OSLDs comprised Stimulated Luminescence of two A/203:C Landauer Landauer Incorporated Dosimetry Incorporated elements B-3

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NOTE: All dosimeter locations contain two dosimeters, ex. numbering convention 102-1 I 102-1 A Figure 8-1 Map Quad Cities REMP Sampling Locations - 2 Mile Radius, 2023

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-T All dosimeter locatia,s cootain two dosimeters, ex. numbering ca,ventia, 102-1/102-1A ffi QUAD CITIES STATION FIGURE 6-2 REMP Sample Locations txD..DN 1:0la.tut CHICI.OOIJJNDIS DIIMN In JCA1MUDI t.

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Intentionally left blank

APPENDIX C DATA TABLES AND FIGURES

Intentionally left blank

Table C-I.1 Table C-I.2 CONCENTRATIONS OF GROSS BETA IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PC I/LITER :t 2 SIGMA COLLECTION PERIOD Q-33 Q-34 01101123

01131123 (1)

(1) 02/01123

02128123 (1)

(1) 03103123

03131123 4.5 +/- 1.7 6.4 +/- 1.9 04107123

04128123 2.9 +/- 1.5 3.9 +/- 1.7 05105123

05126123 6.9 +/- 1.8 3.4 +/- 1.5 06102/23

06130123 3.7 +/- 1.9 5.7 +/- 2.1 07107123

07128123 4.0 +/- 1.8 2.5 +/- 1.7 08104123

08125123

< 2.3 3.7 +/- 1.7 09101123

09129123

< 3.1

< 3.3 10106123

10127123 3.8 +/- 1.8 4.7 +/- 1.8 11103123 - 11/24123 5.9 +/- 1.9 4.6 +/- 1.7 12/01123

12129123 4.6 +/- 1.6 4.9 +/- 1.6 MEAN+/- 2 STD DEV 4.5 +/- 2.6 4.4 +/- 2.4 CONCENTRATIONS OF TRITIUM, IRON AND NICKEL IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PCI/LITER :t 2 SIGMA COLLECTION SITE PERIOD H-3 Fe-55 Ni-63 Q-33 03103123

03131/23

< 197

< 134

< 4.9 04107123

06130123

< 195

< 55

< 4.5 07107123

09129123

< 187

< 71

< 4.6 10106/23

12/29123

< 192

< 115

< 4.6 MEAN Q-34 03103123 - 03131123

< 194

< 90

< 4.5 04107123

06130123

< 180

< 48

< 4.6 07107123

09129123

< 191

< 41

< 4.7 10106123

12129123

< 193

< 66

< 4.6 MEAN THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-1

Table C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 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 Q-33 01/01/23 - 01/31/23 (1) 02/01/23 - 02/28/23 (1) 03/03/23 - 03/31 /23

<4

< 5

< 12

<6

< 10

< 5

< 10

< 14

< 6

<6

< 26

< 12 04/07/23 - 04/28/23

<6

< 12

< 6

< 9

<6

< 10

< 13

<6

< 6

< 29

< 9 05/05/23 - 05/26/23

< 3

<6

< 3

< 5

< 3

< 5

< 8

< 3

< 17

< 5 06/02/23 - 06/30/23

< 5

<4

< 8

< 7

< 12

<6

< 9

< 10

< 6

<6

< 30

< 13 07/07/23 - 07/28/23

< 5

<6

< 10

< 6

< 13

< 6

< 9

< 12

< 7

< 5

< 26

< 12 08/04/23 - 08/25/23

<7

< 5

< 13

<6

< 12

<6

< 12

< 8

< 5

< 21

< 8 09/01 /23 - 09/29/23

< 6

< 5

< 12

< 7

< 12

<6

< 9

< 8

< 7

< 6

< 30

< 8 10/06/23 - 10/27/23

< 5

< 10

<6

< 13

< 7

< 9

< 8

< 5

<6

< 24

< 9 11/03/23 - 11/24/23

< 5

< 13

< 7

< 12

< 5

< 9

< 13

< 5

< 31

< 11 12/01 /23 - 12/29/23

< 5

< 10

< 5

< 10

< 5

< 9

< 15

< 5

< 33

< 11 0

MEAN I N Q-34 01/01/23 - 01/31/23 (1) 02/01123 - 02/28/23 (1) 03/03/23 - 03/31 /23

< 7

< 5

< 12

<9

< 10

< 8

< 12

< 14

< 8

< 5

< 42

< 8 04/07/23 - 04/28/23

<6

< 8

< 13

< 9

< 13

<7

< 9

< 14

< 7

<6

< 28

< 10 05/05/23 - 05/26/23

< 2

< 3

< 6

< 3

< 5

<2

<4

< 8

< 3

< 17

< 6 06/02/23 - 06/30/23

< 5

< 8

< 12

< 9

< 14

<7

< 14

< 10

< 5

<7

< 30

< 8 07/07/23 - 07/28/23

<7

<6

< 15

< 7

< 15

< 8

< 11

< 13

< 8

< 31

< 12 08/04/23 - 08/25/23

<7

< 7

< 13

< 7

< 16

< 7

< 12

< 10

< 8

< 7

< 32

< 11 09/01 /23 - 09/29/23

<6

<4

< 11

< 6

< 9

< 6

< 10

< 9

< 8

<6

< 29

< 9 10/06/23 - 10/27/23

< 5

< 10

< 5

< 11

< 5

< 9

< 8

<6

< 22

< 8 11 /03/23 - 11 /24/23

< 5

< 11

< 8

< 11

< 7

< 9

< 13

< 7

< 6

< 34

< 9 12/01 /23 - 12/29/23

<4

<6

< 12

< 5

< 9

< 6

< 10

< 12

< 5

< 34

< 13 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

Table C-11.1 CONCENTRATIONS OF TRITIUM IN GROUND WATER SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD Q-35 Q-36 01/13/23 - 01/13/23

< 158

< 164 04/14/23 - 04/14/23

< 182

< 174 07/14/23 - 07/14/23

< 195

< 188 10/13/23 - 10/13/23

< 194

< 191 MEAN C-3

Table C-11.2 COLLECTION SITE PERIOD Q-35 01/13/23 - 01/13/23 04/14/23 - 04/14/23 07/14/23 - 07/14/23 10/13/23 - 10/13/23 MEAN Q-36 01 /13/23 - 01 /13/23 04/14/23 - 04/14/23 07/14/23 - 07/14/23 10/13/23 - 10/13/23 0

~

MEAN CONCENTRATIONS OF GAMMA EMITTERS IN GROUND WATER SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PCI/LITER + 2 SIGMA Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137

<4

< 8

<4

< 9

<4

< 7

<6

<4

<7

< 6

< 13

< 9

< 12

<6

< 14

< 11

< 7

< 8

< 9

<7

< 21

< 10

< 16

< 8

< 12

< 13

< 10

< 7

< 6

< 7

< 13

< 9

< 12

< 7

< 12

<7

< 7

< 3

<6

<4

< 6

< 3

< 5

< 3

< 6

< 7

< 11

< 6

< 16

< 7

< 11

< 10

< 8

< 6

< 5

< 9

< 8

< 12

<6

< 8

< 9

<6

< 5

< 7

<6

< 12

< 7

< 17

< 7

< 12

< 10

< 7

<6 Ba-140 La-140

< 17

< 6

< 28

< 10

< 40

< 14

< 29

< 11

< 15

< 5

< 33

< 6

< 29

< 10

< 30

< 12

Table C-111.1 CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PC/KG WET+ 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 Q-24 Freshwater Drum 05/24/23

< 65

< 57

< 152

< 79

< 138

< 70

< 139

< 70

< 45

< 612

< 140 Largemouth Bass 05/24/23

< 42

< 65

< 166

< 65

< 143

< 58

< 94

< 61

< 47

< 465

< 204 Common Carp 10/10/23

< 64

< 73

< 126

< 60

< 119

< 56

< 94

< 62

< 69

< 279

< 123 Largemouth Bass 10/10/23

< 71

< 51

< 103

< 60

< 149

< 66

< 135

< 71

< 45

< 386

< 150 MEAN Q-29 Freshwater Drum 05/24/23

< 75

< 98

< 195

< 76

< 164

< 90

< 163

< 98

< 87

< 804

< 217 Walleye 05/24/23

< 56

< 55

< 115

< 49

< 118

< 51

< 86

< 51

< 56

< 325

< 110 0

Common Carp 10/10/23

< 60

< 58

< 171

< 86

< 148

< 59

< 97

< 57

< 72

< 322

< 125 U'I Largemouth Bass 10/10/23

< 75

< 34

< 109

< 65

< 151

< 63

< 92

< 72

< 56

< 150

< 75 MEAN

0 I 0)

Table C-IV.1 COLLECTION SITE PERIOD Q-39 05/26/23 Q-40 10/20/23 MEAN 05/26/23 10/20/23 MEAN Mn-54

< 91

< 63

< 84

< 57 CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PC/KG DRY +/- 2 SIGMA Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140

< 79

< 54

< 48

< 49

< 185

< 123

< 179

< 115

< 88

< 63

< 68

< 62

< 159

< 130

< 205

< 136

< 93

< 75

< 82

< 58

< 155

< 94

< 155

< 96

< 102

< 80

< 84

< 63

< 102

< 73

< 95

< 55

< 647

< 257

< 562

< 234 La-140

< 231 84

< 147

< 77

Table C-V.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA COLLECTION GROUP I GROUP II GROUP Ill PERIOD Q-01 Q-02 Q-03 Q-04 Q-13 Q-16 Q-37 Q-38 Q-41 Q-42 12130122

01106123 34 +/- 5 40 +/- 5 (1) 36 +/- 5 31 +/- 5 35 +/- 5 41 +/- 5 48 +/- 6 38 +/- 5 38 +/- 5 01106123

01113123 44 +/- 6 46 +/- 6 (1) 46 +/- 6 41 +/- 6 42 +/- 6 50 +/- 6 51 +/- 6 41 +/- 6 46 +/- 6 01113123

01120123 15 +/- 4 19 +/- 4 (1) 19 +/- 4 17 +/- 4 22 +/- 4 18 +/- 4 19 +/- 4 17 +/- 4 16 +/- 4 01120123

01127123 17 +/- 4 17 +/- 4 (1) 21 +/- 4 15 +/- 4 19 +/- 4 25 +/- 5 23 +/- 5 19 +/- 4 18 +/- 4 01/27123 - 02103123 29 +/- 5 28 +/- 5 (1) 28 +/- 5 25 +/- 5 28 +/- 5 27 +/- 5 31 +/- 5 30 +/- 5 31 +/- 5 02103123 - 02110123 22 +/- 5 24 +/- 5 (1) 26 +/- 5 23 +/- 5 24 +/- 5 27 +/- 5 23 +/- 5 24 +/- 5 22 +/- 4 02110123 - 02117123 17 +/- 4 19 +/- 4 (1) 17 +/- 4 16 +/- 4 18 +/- 4 15 +/- 4 22 +/- 4 16 +/- 4 15 +/- 4 02117123 - 02124123 15 +/- 4 13 +/- 4 23 +/- 5 17 +/- 4 17 +/- 4 16 +/- 4 19 +/- 4 16 +/- 4 16 +/- 4 21 +/- 4 02/24123 - 03/03123 16 +/- 4 18 +/- 4 22 +/- 4 18 +/- 4 19 +/- 4 20 +/- 4 12 +/- 3 18 +/- 4 14 +/- 4 20 +/- 4 03103123 - 03110123 14 +/- 4 13 +/- 4 26 +/- 5 16 +/- 4 10 +/- 4 14 +/- 4 16 +/- 4 15 +/- 4 11 +/- 4 20 +/- 4 03/10123 - 03/17123 7+/-3 (1) 11 +/- 4 12 +/- 4 14 +/- 4 12 +/- 4 12 +/- 4 18 +/- 4 12 +/- 4 9 +/- 4 03117123 - 03124123 11 +/- 4 18 +/- 4 15 +/- 4 13 +/- 4 9 +/- 4 8 +/- 4 9 +/- 4 9 +/- 4 14 +/- 4 13 +/- 4 03124123 - 03/31/23 15 +/- 4 16 +/- 4 29 +/- 5 21 +/- 4 18 +/- 4 21 +/- 4 34 +/- 5 41 +/- 6 11 +/- 4 20 +/- 4 03131/23 - 04107123 12 +/- 4 < 4 11 +/- 4 9 +/- 3 10 +/- 4 16 +/- 4 14 +/- 4 13 +/- 4 9 +/- 3 7 +/- 3 04107/23 - 04/14/23 23 +/- 4 23 +/- 4 18 +/- 4 23 +/- 4 16 +/- 4 16 +/- 4 15 +/- 4 17 +/- 4 11 +/- 3 15 +/- 4 04114123 - 04121123 7 +/- 3 13 +/- 4 7 +/- 3 9 +/- 3 7 +/- 3 12 +/- 4 7

+/-3 15 +/- 4 11 +/- 4 10 +/- 4 04/21123 - 04/28/23 11 +/- 4 16 +/- 4 12 +/- 4 14 +/- 4 8 +/- 3 9

+/- 3 11 +/- 4 <4 7 +/- 3 10 +/- 3 04128123 - 05105123 < 5 6+/-3 9 +/- 4 5 +/- 3 7 +/- 3 8 +/-4 7 +/- 3 11 +/- 4 5 +/- 3 5 +/- 3 05/05/23 - 05112/23 12 +/- 4 13 +/- 4 8 +/- 4 15 +/- 4 11 +/- 4 10 +/- 4 7 +/- 3 16 +/- 4 12 +/- 4 15 +/- 4 05112/23 - 05120/23 10 +/- 3 10 +/- 3 12 +/- 3 10 +/- 3 13 +/- 4 10 +/- 3 14 +/- 4 10 +/- 3 9 +/- 3 15 +/- 4 05/20123 - 05/26/23 9+/-4 12 +/- 4 10 +/- 4 13 +/- 4 6 +/- 4 7+/-4 13 +/- 4 11 +/- 4 13 +/- 4 9 +/- 4 05126123 - 06102/23 8 +/- 3 13 +/- 4 12 +/- 4 20 +/- 4 13 +/- 4 15 +/- 4 11 +/- 4 19 +/- 4 15 +/- 4 17 +/- 4 06/02/23 - 06/09/23 9+/-4 9+/-3 16 +/- 4 13 +/- 4 11 +/- 4 14 +/- 4 17 +/- 4 20 +/- 4 9 +/- 4 <4 06109123 - 06116123 7 +/- 3 9 +/- 4 11 +/- 4 10 +/- 4 6 +/- 3 11 +/- 4 10 +/- 4 14 +/- 4 9 +/- 4 13 +/- 4 06116123 - 06/23123 19 +/- 5 15 +/- 4 10 +/- 4 15 +/- 4 11 +/- 4 14 +/- 4 13 +/- 4 21 +/- 5 13 +/- 4 <5 06123123 - 06130123 18 +/- 4 14 +/- 4 20 +/- 4 15 +/- 4 13 +/- 4 19 +/- 4 17 +/- 4 21 +/- 4 12 +/- 4 13 +/- 4 06130123 - 07107123 (1)

(1)

(1) 07107123 - 07114123 17 +/- 4 18 +/- 4 17 +/- 4 19 +/- 4 14 +/- 4 18 +/- 4 14 +/- 4 19 +/- 4 7 +/- 3 6 +/- 3 07/14123 - 07121123 14 +/- 4 17 +/- 4 8 +/- 4 16 +/- 4 13 +/- 4 15 +/- 4 14 +/- 4 20 +/- 4 11 +/- 4 15 +/- 4 07121123 - 07128123 21 +/- 4 24 +/- 5 22 +/- 4 26 +/- 5 13 +/- 4 22 +/- 4 22 +/- 4 22 +/- 4 14 +/- 4 20 +/- 4 07/28123 - 08104123 23 +/- 4 24 +/- 4 19 +/- 4 27 +/- 5 19 +/- 4 25 +/- 5 18 +/- 4 20 +/- 4 16 +/- 4 18 +/- 4 08104123 - 08111123 23 +/- 4 20 +/- 4 18 +/- 4 24 +/- 4 17 +/- 4 22 +/- 4 19 +/- 4 25 +/- 4 11 +/- 3 24 +/- 4 08/11/23 - 08118123 15 +/- 4 19 +/- 4 13 +/- 4 13 +/- 4 12 +/- 4 14 +/- 4 14 +/- 4 15 +/- 4 9 +/- 4 15 +/- 4 08118123 - 08125123 34 +/- 5 38 +/- 5 38 +/- 5 38 +/- 5 28 +/- 5 37 +/- 5 34 +/- 5 40 +/- 5 28 +/- 5 42 +/- 5 08125123 - 09101/23 20 +/- 4 19 +/- 4 20 +/- 4 24 +/- 5 11 +/- 4 17 +/- 4 16 +/- 4 17 +/- 4 11 +/- 4 22 +/- 4 09/01123 - 09108123 19 +/- 4 20 +/- 4 22 +/- 5 19 +/- 4 12 +/- 4 15 +/- 4 15 +/- 4 19 +/- 4 13 +/- 4 15 +/- 4 09108123 - 09115123 16 +/- 4 17 +/- 4 10 +/- 3 19 +/- 4 9 +/- 3 12 +/- 4 <4 13 +/- 4 9 +/- 3 19 +/- 4 09115123 - 09122/23 24 +/- 5 24 +/- 5 23 +/- 5 28 +/- 5 19 +/- 5 25 +/- 5 20 +/- 5 28 +/- 5 19 +/- 4 27 +/- 5 09122/23 - 09/29123 26 +/- 5 24 +/- 5 25 +/- 5 19 +/- 4 22 +/- 4 22 +/- 4 26 +/- 5 29 +/- 5 15 +/- 4 29 +/- 5 09/29123 - 10106123 27 +/- 5 31 +/- 5 26 +/- 5 24 +/- 4 21 +/- 4 18 +/- 4 <4 22 +/- 4 20 +/- 4 23 +/- 4 10/06123 - 10113123 22 +/- 4 18 +/- 4 18 +/- 4 19 +/- 4 15 +/- 4 19 +/- 4 16 +/- 4 22 +/- 4 13 +/- 4 22 +/- 4 10113123 - 10120123 20 +/- 5 23 +/- 5 19 +/- 5 17 +/- 4 17 +/- 4 19 +/- 5 11 +/- 4 19 +/- 5 11 +/- 4 17 +/- 4 10/20123 - 10127123 23 +/- 5 23 +/- 5 18 +/- 4 21 +/- 4 13 +/- 4 18 +/- 4 20 +/- 4 23 +/- 5 11 +/- 4 20 +/- 4 10127123 - 11103123 23 +/- 4 20 +/- 4 21 +/- 4 24 +/- 5 19 +/- 4 19 +/- 4 17 +/- 4 26 +/- 5 14 +/- 4 21 +/- 4 11 /03123 - 11110123 27 +/- 5 28 +/- 5 29 +/- 5 35 +/- 5 21 +/- 4 27 +/- 5 26 +/- 5 34 +/- 5 22 +/- 4 30 +/- 5 11/10123 -11117123 20 +/- 5 23 +/- 5 21 +/- 5 26 +/- 5 19 +/- 4 21 +/- 5 22 +/- 5 32 +/- 5 13 +/- 4 23 +/- 5 11 /17/23 - 11124123 21 +/- 4 24 +/- 4 25 +/- 5 19 +/- 4 15 +/- 4 19 +/- 4 22 +/- 4 17 +/- 4 12 +/- 4 16 +/- 4 11/24/23 - 12101/23 28 +/- 5 26 +/- 5 26 +/- 5 27 +/- 5 21 +/- 4 23 +/- 5 21 +/- 5 27 +/- 5 14 +/- 4 25 +/- 5 12101123 - 12108123 22 +/- 4 28 +/- 5 24 +/- 4 27 +/- 5 22 +/- 4 24 +/- 4 24 +/- 4 24 +/- 4 16 +/- 4 24 +/- 4 12108/23 - 12115/23 18 +/- 4 22 +/- 5 19 +/- 4 21 +/- 4 15 +/- 4 22 +/- 5 18 +/- 4 25 +/- 5 15 +/- 4 21 +/- 5 12115123 - 12122/23 23 +/- 5 23 +/- 5 23 +/- 5 28 +/- 5 21 +/- 4 27 +/- 5 18 +/- 4 29 +/- 5 14 +/- 4 18 +/- 4 12/22/23 - 12/29123 20 +/- 4 18 +/- 4 19 +/- 4 20 +/- 4 15 +/- 4 19 +/- 4 17 +/- 4 22 +/- 5 13 +/- 4 14 +/- 4 MEAN+/- 2 STD DEV 19 +/- 15 20 +/- 15 18 +/- 14 20 +/- 16 16 +/- 13 19 +/- 14 18 +/- 17 22 +/- 18 15 +/- 14 19 +/- 17 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-7

Table C-V.2 MONTHLY AND YEARLY MEAN VALUES OF GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP I - NEAR-SITE LOCATIONS GROUP II-FAR-FIELD LOCATIONS GROUP Ill - CONTROL LOCATION COLLECTION MIN MAX MEAN COLLECTION MIN MAX MEAN COLLECTION MIN MAX MEAN PERIOD

+/-2SD PERIOD

+/-2SD 12/30/22 - 02/03/23 15 46 29 +/- 22 12/30/22 - 02/03/23 15 51 30 +/- 23 12/30/22 - 02/03/23 16 46 30 +/- 26 02/03/23 - 03/03/23 13 26 19 +/- 8 02/03/23 - 03/03/23 12 27 19 +/- 8 02/03/23 - 03/03/23 15 22 19 +/- 6 03/03/23 - 03/31 /23 7

29 16 +/- 11 03/03/23 - 03/31 /23 8

41 15 +/- 17 03/03/23 - 03/31/23 9

20 16 +/- 11 03/31 /23 - 04/28/23 7

23 14 +/- 11 03/31 /23 - 04/28/23 7

17 12 +/- 7 03/31/23 - 04/28/23 7

15 11 +/- 7 04/28/23 - 06/02/23 5

20 11 +/- 7 04/28/23 - 06/02/23 5

19 11 +/- 7 04/28/23 - 06/02/23 5

17 12 +/- 10 06/02/23 - 06/30/23 7

20 13 +/- 8 06/02/23 - 06/30/23 6

21 14 +/- 8 06/09/23 - 06/30/23 13 13 13 +/- 1 07/07/23 - 08/04/23 8

27 19 +/- 10 07/07/23 - 08/04/23 7

25 17 +/- 9 07/07/23 - 08/04/23 6

20 15 +/- 13 08/04/23 - 09/01/23 13 38 23 +/- 17 08/04/23 - 09/01/23 9

40 20 +/- 18 08/04/23 - 09/01/23 15 42 26 +/- 22 09/01 /23 - 09/29/23 10 28 21 +/- 9 09/01 /23 - 09/29/23 9

29 18 +/- 12 09/01/23 - 09/29/23 15 29 23 +/- 14 09/29/23 - 11 /03/23 17 31 22 +/- 7 09/29/23 - 11 /03/23 11 26 18 +/- 8 09/29/23 - 11 /03/23 17 23 21 +/- 5 11/03/23 - 12/01/23 19 35 25 +/- 8 11 /03/23 - 12/01 /23 12 34 21 +/- 12 11 /03/23 - 12/01 /23 16 30 24 +/- 12 0

12/01/23 - 12/29/23 18 28 22 +/- 7 12/01 /23 - 12/29/23 13 29 20 +/- 9 12/01/23 - 12/29/23 14 24 19 +/- 8 I

01) 12/30/22 - 12/29/23 5

46 19 +/- 15 12/30/22 - 12/29/23 5

51 18 +/- 16 12/30/22 - 12/29/23 5

46 19 +/- 17

Table C-V.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 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 Q-01 12/30/22 - 03/31/23

< 3

<4

< 8

< 2

<6

<4

< 5

< 3

< 2

< 47

< 14 03/31 /23 - 06/30/23

< 2

<4

< 2

< 5

< 2

< 3

< 2

<2

< 18

< 10 07/07/23 - 09/29/23

< 2

< 3

< 7

< 3

< 6

< 3

<6

< 3

< 25

< 9 09/29/23 - 12/29/23

<2

<3

< 5

< 3

< 8

< 3

<3

<2

< 24

< 13 MEAN Q-02 12/30/22 - 03/31 /23

< 2

< 3

< 7

< 3

<6

< 3

< 5

< 3

< 45

< 11 03/31 /23 - 06/30/23

< 3

<4

< 8

<4

< 7

< 3

<6

< 3

< 35

< 15 07/07/23 - 09/29/23

< 2

< 3

<6

< 3

< 5

< 2

<4

< 1

< 2

< 18

<9 09/29/23 - 12/29/23

< 2

< 5

< 3

<6

< 3

< 5

< 2

< 23

<6 MEAN 0

I Q-03 02/17/23 - 03/31/23

< 5

<6

< 14

< 5

< 10

< 3

< 12

<4

< 60

< 31 co 03/31 /23 - 06/30/23

< 2

<4

< 2

<4

< 1

<4

< 2

< 19

< 11 07/07/23 - 09/29/23

< 3

< 7

< 3

< 6

< 3

< 5

< 3

< 28

< 6 09/29/23 - 12/29/23

< 3

< 7

< 3

< 6

< 3

< 5

< 3

< 25

< 14 MEAN Q-04 12/30/22 - 03/31/23

< 2

< 3

<6

< 2

< 3

<2

< 3

< 2

<2

< 34

< 14 03/31 /23 - 06/30/23

< 1

< 2

<7

< 2

< 5

< 2

<4

<2

< 2

< 19

<6 07/07/23 - 09/29/23

< 2

< 5

< 2

<6

< 3

< 2

<2

< 20

< 7 09/29/23 - 12/29/23

< 2

< 3

<6

< 3

< 5

< 3

<6

< 3

< 30

< 9 MEAN Q-13 12/30/22 - 03/31 /23

<2

< 2

< 9

<2

<4

<2

<5

< 2

< 31

< 13 03/31 /23 - 06/30/23

< 3

< 7

< 3

< 8

<4

< 6

< 3

< 27

< 12 07/07/23 - 09/29/23

< 2

< 6

< 3

< 8

< 3

<6

< 3

< 2

< 18

<9 09/29/23 - 12/29/23

< 3

< 8

< 3

< 10

< 3

< 5

< 3

< 24

< 8 MEAN

Table C-V.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 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 Q-16 12/30/22 - 03/31/23

< 2

<4

< 10

< 3

<4

< 3

< 5

< 3

< 2

< 52

< 20 03/31 /23 - 06/30/23

< 2

< 3

< 5

< 2

< 5

< 3

<4

< 2

< 27

< 8 07/07/23 - 09/29/23

<4

< 5

< 9

<4

< 9

< 5

< 7

<4

< 3

< 31

< 14 09/29/23 - 12/29/23

<4

< 3

< 8

< 3

< 9

< 3

<6

< 3

< 27

< 14 MEAN Q-37 12/30/22 - 03/31/23

< 3

< 11

< 3

<6

< 3

< 5

< 3

<2

< 46

< 15 03/31 /23 - 06/30/23

< 2

< 3

< 7

< 3

< 6

< 3

< 5

< 3

<2

< 25

< 12 07/07/23 - 09/29/23

< 2

< 3

<4

< 3

<6

< 3

<6

<2

< 3

< 21

<9 09/29/23 - 12/29/23

< 2

<4

< 2

<6

<2

<4

<2

< 23

< 12 MEAN 0

I 12/30/22 - 03/31/23

< 6

< 3 Q-38

< 1

< 3

< 2

< 5

<4

< 2

< 1

< 35

< 14 0

03/31/23 - 06/30/23

< 2

<2

<5

< 2

<5

< 3

< 2

<2

< 21

< 7

<4 07/07/23 - 09/29/23

< 2

< 5

< 2

< 6

< 2

<4

< 2

< 16

< 8 09/29/23 - 12/29/23

< 2

< 3

< 5

< 3

< 7

< 3

<4

<2

< 2

< 23

< 8 MEAN Q-41 12/30/22 - 03/31/23

< 2

< 3

< 8

< 3

<4

< 2

< 3

< 2

< 32

< 15 03/31/23 - 06/30/23

<4

< 10

< 3

< 9

<4

< 6

< 3

< 31

< 11 07/07/23 - 09/29/23

< 2

<6

< 3

< 2

< 3

< 2

<2

< 19

< 9 09/29/23 - 12/29/23

< 3

< 2

< 5

< 2

<6

< 3

< 5

<2

< 2

< 23

< 9 MEAN Q-42 12/30/22 - 03/31 /23

< 2

< 3

<4

< 2

< 5

< 2

< 5

< 2

<2

< 26

< 12 03/31 /23 - 06/30/23

< 3

<4

<9

<4

< 8

<4

<6

< 3

< 27

< 15 07/07/23 - 09/29/23

< 3

<4

< 7

<4

< 7

<4

< 6

< 3

< 26

< 7 09/29/23 - 12/29/23

< 2

< 6

< 3

<4

< 1

<4

< 2

< 17

< 8 MEAN

TABLE C-Vl.1 COLLECTION PERIOD 12/30/22 - 01 /06/23 01 /06/23 - 01 /13/23 01/13/23 - 01/20/23 01 /20/23 - 01 /27 /23 01/27/23 - 02/03/23 02/03/23 - 02/10/23 02/10/23 - 02/17 /23 02/17 /23 - 02/24/23 02/24/23 - 03/03/23 03/03/23 - 03/10/23 03/10/23 - 03/17 /23 03/17/23 - 03/24/23 03/24/23 - 03/31 /23 03/31/23 - 04/07/23 04/07/23 - 04/14/23 04/14/23 - 04/21/23 04/21/23 - 04/28/23 04/28/23 - 05/05/23 05/05/23 - 05/12/23 05/12/23 - 05/20/23 05/20/23 - 05/26/23 05/26/23 - 06/02/23 06/02/23 - 06/09/23 06/09/23 - 06/16/23 06/16/23 - 06/23/23 06/23/23 - 06/30/23 06/30/23 - 07 /07 /23 07/07/23 - 07/14/23 07/14/23 - 07/21/23 07/21/23 - 07/28/23 07 /28/23 - 08/04/23 08/04/23 - 08/11 /23 08/11/23 - 08/18/23 08/18/23 - 08/25/23 08/25/23 - 09/01 /23 09/01/23 - 09/08/23 09/08/23 - 09/15/23 09/15/23 - 09/22/23 09/22/23 - 09/29/23 09/29/23 - 10/06/23 10/06/23 - 10/13/23 10/13/23 - 10/20/23 10/20/23 - 10/27 /23 10/27/23 - 11/03/23 11 /03/23 - 11/10/23 11/10/23 - 11/17/23 11/17/23 - 11/24/23 11/24/23 - 12/01/23 12/01/23 - 12/08/23 12/08/23 - 12/15/23 12/15/23 - 12/22/23 12/22/23 - 12/29/23 MEAN CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RES UL TS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUPI Q-01 Q-02 Q-03 Q-04 (1)

< 42 (1)

< 41

< 55

< 55 (1)

< 55

< 38

< 38 (1)

< 38

< 30

< 30 (1)

< 30

< 61

< 61 (1)

< 61

< 43

< 18 (1)

< 43

< 28

< 28 (1)

< 28

< 30

< 16

< 30

< 19

< 37

< 38

< 37

< 35

< 37

< 16

< 50

< 52

< 21

< 23

< 24

< 23

< 36

< 15

< 36

< 39

< 40

< 39

<46

< 48

< 46

< 39

< 40

< 18

< 51

< 52

< 51

< 22

< 51

< 49

< 51

< 21

<45

< 47

< 19

< 37

< 16

< 37

< 51

< 53

< 51

< 45

<46

<45

< 33

< 34

< 33

<42

< 18

< 42

< 37

< 18

< 36

<48

< 50

< 48

< 38

< 26

< 38

<44

< 45

< 44

< 55

< 24

< 55

< 41

< 18

< 41

< 53

< 23

< 53

< 50

< 51

< 50

< 59

< 26

< 59

<46

< 22

< 46

< 49

< 51

< 49

< 43

< 48

< 45

< 43

< 34

< 17

< 34

< 49

< 50

< 21

< 49

< 39

< 17

< 39

<44

< 45

< 44

< 24

< 58

< 60

< 58

< 57

< 37

< 36

<64

< 64

< 51

< 22

< 51

<43

< 45

< 20

< 47

< 48

< 47

< 50

< 33

< 52

< 50

< 34

< 17

< 34

< 48

<25

<48 GROUP II GROUP Ill Q-13 Q-16 Q-37 Q-38 Q-41 Q-42

< 43

< 39

< 38

< 18

< 38

< 24

< 56

< 12

< 29

< 27

< 19

< 40

< 29

< 30

< 29

< 16

< 30

< 31

< 29

< 26

< 63

< 58

< 25

< 58

< 44

< 46

< 27

< 45

< 14

< 28

< 33

< 15

< 31

< 17

< 34

< 38

< 32

< 26

< 36

< 31

< 36

< 52

< 20

< 45

< 46

< 12

< 13

< 25

< 36

< 42

< 29

< 43

< 40

< 17

< 14

< 30

< 29

<~

<49

<21

<49

<47

< 40

< 41

< 20

< 41

< 39

< 22

< 26

< 10

< 50

< 45

< 20

< 47

< 44

< 52

< 16

< 38

< 46

< 32

< 31

< 38

< 33

< 34

< 14

< 22

< 21

< 51

< 49

< 19

< 21

< 50

< 49

< 29

< 27

< 41

< 40

< 39

< 43

< 57

< 24

< 58

< 55

< 38

< 62

< 25

< 21

< 19

< 46

< 44

< 39

< 41

< 42

< 40

< 31

< 16

< 37

< 56

< 67

< 28

< 68

< 64

< 43

< 31

< 16

< 31

< 30

< 54

< 40

< 41

< 16

< 21

< 53

< 54

< 22

< 61

< 52

< 53

< 26

< 47

< 39

< 18

< 39

< 37

< 21

< 22

< 54

< 51

< 44

< 22

< 52

< 50

< 35

< 40

< 26

< 51

< 37

< 38

< 17

< 40

< 56

< 57

< 23

< 19

< 50

< 48

< 59

< 64

< 65

< 26

< 25

< 38

< 39

< 28

< 17

< 53

< 54

< 52

< 19

< 47

< 30

< 27

< 60

< 61

< 58

< 50

< 39

< 44

< 39

< 38

< 43

< 56

< 58

< 56

< 46

< 61

< 63

< 61

< 50

< 61

< 63

< 61

< 34

< 21

< 15

< 22

< 21

< 48

< 57

< 28

< 59

< 57

< 38

< 28

< 29

< 30

< 58

< 45

< 33

< 34

< 31

< 36

< 45

< 25

< 40

< 29

< 47

< 39

< 25

< 44

< 38

< 16

< 32

< 49

< 39

< 55

< 60

< 45

< 19

< 37

< 65

< 30

< 39

< 52

< 51

< 38

< 52

< 50

< 38

< 37

< 56

< 21

< 64

< 38

< 22

< 47

< 26

< 39

< 24

< 26

< 31

< 22

< 59 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-11

Table C-Vll.1 CONCENTRATIONS OF I-131 IN MILK SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION INDICATOR FARM PERIOD Q-26 01/06/23

< 0.7 02/03/23

< 0.6 03/03/23

< 0.9 04/07/23

< 0.8 05/05/23

< 0.9 05/20/23

< 0.9 06/02/23

< 0.7 06/16/23

< 0.9 06/30/23

< 0.8 07/14/23

< 0.9 07/28/23

< 0.8 08/11/23

< 0.8 08/25/23

< 0.8 09/08/23

< 0.8 09/22/23

< 0.7 10/06/23

< 0.8 10/20/23

< 0.9 11/03/23

< 0.7 11/17/23

< 0.9 12/01/23

< 0.9 MEAN C-12

Table C-Vll.2 CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 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 Q-26 01/06/23

< 5

< 17

< 6

< 18

< 7

< 13

< 7

<6

< 28

< 8 02/03/23

<6

< 18

< 8

< 19

< 8

< 14

< 10

< 8

< 36

< 7 03/03/23

< 5

<6

< 16

< 7

< 15

<6

< 11

< 7

<6

< 35

< 7 04/07/23

< 7

< 6

< 17

<6

< 17

< 7

< 11

<7

<6

< 37

< 10 05/05/23

< 5

< 7

< 14

<6

< 16

<6

<9

<7

<6

< 31

< 12 05/20/23

<6

< 7

< 16

< 9

< 15

< 7

< 11

< 9

< 29

< 11 06/02/23

< 7

< 6

< 17

< 9

< 17

< 8

< 11

< 7

< 8

< 40

< 9 06/16/23

< 7

< 5

< 21

< 9

< 19

< 7

< 12

< 9

< 7

< 29

< 9.4 06/30/23

< 8

< 7

< 22

< 10

< 15

< 9

< 20

< 10

<9

< 32

< 9 07/14/23

<7

< 7

< 15

< 8

< 17

<6

< 13

< 8

<7

< 25

< 11 07/28/23

< 7

< 9

< 15

< 9

< 15

< 8

< 15

< 8

< 9

< 38

< 12

(')

08/11/23

< 7

< 8

< 15

< 9

< 18

< 7

< 13

< 8

< 7

< 30

< 10 I

08/25/23

< 7

< 8

< 18

< 8

< 20

<6

< 13

< 8

< 7

< 35

< 12

_a, (A) 09/08/23

<6

< 9

< 21

< 7

< 19

< 7

< 13

< 8

< 9

< 35

< 14 09/22/23

< 6

< 8

< 17

< 9

< 20

< 8

< 10

< 9

<9

< 30

< 10 10/06/23

< 8

< 18

< 10

< 22

< 12

< 15

< 10

< 8

< 41

< 12 10/20/23

< 6

<6

< 13

< 7

< 15

< 7

< 10

<6

< 28

< 8 11/03/23

< 7

< 8

< 19

<9

< 16

< 7

< 12

< 9

<9

< 33

< 10 11/17/23

<6

< 7

< 14

< 8

< 15

< 5

< 12

< 6

<6

< 32

< 9 12/01/23

< 7

< 17

< 10

< 18

< 10

< 14

< 10

< 9

< 41

< 14 MEAN

Table C-Vlll.1 CONCENTRATIONS OF GAMMA EMITTERS IN FOOD PRODUCT SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PCI/KG WET :t 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 Q-CONTROL Broccoli/Cauliflower 07120/23

< 20

< 21

< 53

< 23

< 50

< 19

< 33

< 51

< 17

< 20

< 110

< 38 Potatoes/Radishes 07/20/23

< 15

< 12

< 33

< 15

< 31

< 15

< 27

< 40

< 14

< 13

< 84

< 21 MEAN Q-QUAD 1 Lettuce 07/20/23

< 20

< 47

< 21

< 52

< 21

< 28

< 52

< 21

< 108

< 34 Potatoes 07/20/23

< 20

< 15

< 43

< 21

< 41

< 21

< 39

< 50

< 21

< 20

< 103

< 22 MEAN Q-QUAD 2 Cabbage/Zucchini 07/20123

< 18

< 15

< 40

< 20

< 39

< 19

< 27

< 42

< 16

< 96

< 16 0

Banana peppers/Cilantro 07/20/23

< 23

< 24

< 42

< 25

< 55

< 26

< 39

< 54

< 31

< 36

< 147

< 46 Potatoes 08/04123

< 13

< 28

< 18

< 31

< 17

< 26

< 21

< 16

< 59

< 24

~

MEAN Q-QUAD3 Kale 07/20/23

< 16

< 21

< 38

< 20

< 45

< 15

< 31

< 44

< 16

< 106

< 33 Horseradish 07120/23

< 17

< 16

< 39

< 18

< 41

< 16

< 28

< 46

< 22

< 18

< 102

< 20 MEAN Q-QUAD4 Kale 07/20/23

< 18

< 17

< 48

< 22

< 48

< 25

< 36

< 48

< 16

< 22

< 109

< 40 Beets 07120/23

< 10

< 23

< 11

< 22

< 8

< 18

< 20

< 9

<9

< 52

< 15 MEAN

Table C-IX.1 QUARTERLY DLR RESULTS FOR QUAD CITIES NUCLEAR POWER STATION, 2023 Location 2023 Normalized Net Dose, MQX Monitoring Quarterly BQ+ MDDQ (mrem/std. Qtr.)

Quarterly Facility Dose, FQ (mrem)

Location Baseline, BQ (mrem)

(mrem) 1 I

2 I

3 I

4 1

I 2

I 3

I 4

Other Q-01 11.4 15.8 5.5 5.5 7.3 6.4 ND ND ND ND Q-02 11.7 16.1 4.8 6.0 6.4 3.5 ND ND ND ND Q-03 10.7 15.1 4.7 4.9 6.0 6.7 ND ND NO ND Q-04 12.4 16.8 6.7 6.1 13.3 3.4 ND ND ND ND Q-13 13.2 17.6 5.4 4.8 7.2 5.8 ND ND ND ND Q-16 10.9 15.3 5.4 4.1 6.7 7.6 ND ND NO ND Q-37 13.7 18.1 6.2 5.6 13.6 5.6 ND ND ND ND Q-38 14.8 19.2 7.9 7.2 15.9 5.9 ND ND NO ND Q-41 13.7 18.1 7.1 7.1 7.1 9.2 ND ND ND ND Q-42 14.5 18.9 8.9 10.7 11.8 10.9 ND ND ND ND Inner Q-101-1 11.8 16.2 5.9 5.1 12.4 2.7 ND ND ND ND Q-101-2 12.4 16.8 5.0 7.2 13.1 3.9 ND ND NO ND Q-102-1 13.1 17.5 5.0 6.1 14.6 3.1 ND ND NO ND Q-102-3 12.4 16.8 6.1 5.0 13.9 2.9 ND ND ND ND Q-103-1 11.1 15.5 3.6 4.0 11.4 2.2 ND ND ND ND Q-103-2 11.1 15.5 4.6 4.9 10.8 2.1 ND ND ND ND Q-104-1 11.4 15.8 4.0 5.9 12.4 1.2 ND ND ND ND Q-104-2 12.0 16.4 4.8 4.0 12.9 2.6 ND ND ND ND Q-105-1 11.5 15.9 4.9 5.3 11.3 2.4 ND ND NO ND Q-105-2 11.7 16.1 5.3 6.6 11.7 3.7 ND ND ND ND Q-106-2 12.1 16.5 5.0 5.4 12.8 2.0 ND ND ND ND Q-106-3 11.7 16.1 5.3 5.0 12.1 4.1 ND ND ND ND Q-107-2 11.6 16.0 5.9 6.5 13.2 1.5 ND ND ND ND Q-107-3 11.7 16.1 4.5 3.0 11.1 6.4 ND ND ND ND Q-108-1 11.9 16.3 4.8 7.0 10.6 2.3 ND ND ND ND Q-108-2 11.6 16.0 4.0 4.8 12.6 2.4 ND ND ND ND Q-109-1 12.4 16.8 3.8 6.8 12.1 2.1 ND ND ND ND Q-109-2 12.0 16.4 4.0 5.8 12.7 4.2 ND ND ND ND Q-111-1 12.1 16.5 6.2 5.3 7.0 5.9 ND ND ND ND Q-111-2 12.1 16.5 5.2 4.3 5.6 (1)

ND ND ND (1)

Q-112-1 12.0 16.4 4.5 2.9 6.2 4.7 ND ND ND ND Q-112-2 11.4 15.8 4.2 2.3 4.9 3.8 ND ND ND ND Q-113-1 11.5 15.9 4.2 3.1 4.6 5.0 ND ND ND ND Q-113-2 10.9 15.3 4.7 2.5 4.0 5.9 ND ND ND ND Q-114-1 10.9 15.3 4.7 3.6 6.6 3.4 ND ND ND ND Q-114-2 12.6 17.0 6.2 5.7 6.8 5.5 ND ND ND ND Q-115-1 12.1 16.5 6.0 4.2 7.3 4.6 ND ND ND ND Q-115-2 11.3 15.7 4.9 2.6 6.6 4.7 ND ND ND ND Q-116-1 13.4 17.8 7.2 7.1 7.9 7.1 ND ND ND ND Q-116-3 12.3 16.7 4.1 5.1 10.2 (1)

ND ND ND (1)

Outer Q-201-1 13.0 17.4 5.9 4.8 6.3 5.0 ND ND ND ND Q-201-2 13.7 18.1 8.4 5.9 7.7 7.6 ND ND ND ND Q-202-1 11.6 16.0 6.0 4.2 6.9 5.9 ND ND ND ND Q-202-2 12.9 17.3 4.2 5.0 5.6 4.8 ND ND ND ND Q-203-1 13.3 17.7 6.2 6.3 7.8 5.3 ND ND ND ND Q-203-2 15.8 20.2 8.9 6.9 16.4 6.4 ND ND ND ND Q-204-1 14.2 18.6 6.0 7.5 14.9 6.7 ND ND ND ND Q-204-2 15.4 19.8 10.6 7.8 17.9 8.4 ND ND ND ND Q-205-1 13.8 18.2 6.9 8.1 14.9 6.2 ND ND ND ND Q-205-4 15.4 19.8 7.8 10.3 16.4 5.9 ND ND ND ND C-15

Table C-IX.1 QUARTERLY DLR RESULTS FOR QUAD CITIES NUCLEAR POWER STATION, 2023 Location 2023 Normalized Net Dose, MQX Monitoring Quarterly Ba+ MDDa (mrem/std. Qtr.)

Quarterly Facility Dose, Fa (mrem)

Location Baseline, Ba (mrem)

(mrem) 1 I

2 I

3 I

4 1

I 2

I 3

I 4

Outer Q-206-1 12.9 17.3 6.1 6.6 14.3 3.5 ND ND ND ND (cont'd) Q-206-2 11.8 16.2 5.1 4.2 13.1 4.2 ND ND ND ND Q-207-1 13.1 17.5 6.6 7.6 14.6 3.9 ND ND ND ND Q-207-4 13.7 18.1 5.9 7.5 15.4 4.0 ND ND ND ND Q-208-1 13.1 17.5 5.9 5.0 13.9 6.5 ND ND ND ND Q-208-2 14.6 19.0 8.3 7.5 16.2 7.9 ND ND ND ND Q-209-1 14.0 18.4 7.3 6.6 16.6 6.9 ND ND ND ND Q-209-4 13.3 17.7 3.5 7.9 14.2 4.6 ND ND ND ND Q-210-1 15.0 19.4 9.7 9.4 11.0 5.8 ND ND ND ND Q-210-4 14.6 19.0 8.9 8.9 8.4 9.9 ND ND ND ND Q-210-5 10.7 15.1 1.6 2.5 10.2

-0.3 ND ND ND ND Q-211-1 16.1 20.5 8.6 9.2 9.7 9.2 ND ND ND ND Q-211-2 16.5 20.9 9.5 9.0 10.4 7.2 ND ND ND ND Q-212-1 12.9 17.3 6.6 7.3 6.8 8.3 ND ND ND ND Q-212-2 10.6 15.0 3.2 1.8 4.4 3.5 ND ND ND ND Q-213-1 11.9 16.3 5.2 4.3 7.2 5.5 ND ND ND ND Q-213-2 11.4 15.8 5.0 3.5 6.3 7.8 ND ND ND ND Q-214-1 12.7 17.1 6.5 6.1 6.9 5.0 ND ND ND ND Q-214-2 13.6 18.0 8.1 5.7 7.2 7.3 ND ND ND ND Q-215-1 12.5 16.9 4.8 5.6 8.6 5.7 ND ND ND ND Q-215-2 13.9 18.3 10.2 8.9 11.0 8.3 ND ND ND ND Q-216-1 15.4 19.8 7.4 6.9 10.8 7.4 ND ND ND ND Q-216-2 14.1 18.5 6.6 8.5 9.3 6.9 ND ND ND ND ND = Not Detected (1) Environmental Dosimetry lost for this period - see Program Exceptions, table D-2 for details C-16

Table C-IX.2 ANNUAL DLR RESULTS FOR QUAD CITIES NUCLEAR POWER STATION, 2023 Annual Baseline, Normalized Annual Monitoring Location BA (mrem)

BA+ MDDA (mrem)

Annual Dose, MA Facility Dose, FA (mrem/yr)

Other Q-01 45.7 56.0 24.7 ND Q-02 46.8 57.1 20.7 ND Q-03 42.8 53.1 22.3 ND Q-04 49.3 59.6 29.5 ND Q-13 52.9 63.2 23.2 ND Q-16 43.7 54.0 23.8 ND Q-37 55.0 65.3 31.0 ND Q-38 59.2 69.5 36.9 ND Q-41 54.6 64.9 30.5 ND Q-42 57.8 68.1 42.3 ND Inner Q-101-1 47.2 57.5 26.1 ND Q-101-2 49.8 60.1 29.2 ND Q-102-1 52.3 62.6 28.8 ND Q-102-3 49.8 60.1 27.9 ND Q-103-1 44.4 54.7 21.2 ND Q-103-2 44.3 54.6 22.4 ND Q-104-1 45.2 55.5 23.5 ND Q-104-2 47.8 58.1 24.3 ND Q-105-1 46.2 56.5 23.9 ND Q-105-2 47.0 57.3 27.3 ND Q-106-2 48.2 58.5 25.2 ND Q-106-3 46.9 57.2 26.5 ND Q-107-2 46.5 56.8 27.1 ND Q-107-3 46.9 57.2 25.0 ND Q-108-1 47.7 58.0 24.7 ND Q-108-2 46.6 56.9 23.8 ND Q-109-1 49.5 59.8 24.8 ND Q-109-2 48.0 58.3 26.7 ND Q-111-1 48.5 58.8 25.5 ND Q-111-2 48.5 58.8 15.1 ND Q-112-1 47.9 58.2 18.3 ND Q-112-2 45.4 55.7 15.2 ND Q-113-1 45.9 56.2 16.9 ND Q-113-2 43.4 53.7 14.9 ND Q-114-1 43.8 54.1 18.3 ND Q-114-2 50.3 60.6 24.2 ND Q-115-1 48.5 58.8 22.1 ND Q-115-2 45.4 55.7 18.8 ND Q-116-1 53.8 64.1 29.3 ND Q-116-3 49.3 59.6 19.4 ND Outer Q-201-1 52.0 62.3 22.0 ND Q-201-2 54.8 65.1 29.6 ND Q-202-1 46.5 56.8 25.1 ND Q-202-2 51.6 61.9 18.7 ND Q-203-1 53.2 63.5 25.6 ND Q-203-2 63.2 73.5 38.6 ND Q-204-1 56.9 67.2 35.1 ND Q-204-2 61.6 71.9 44.7 ND Q-205-1 55.4 65.7 36.1 ND Q-205-4 61.3 71.6 40.1 ND C-17

Table C-IX.2 ANNUAL DLR RESULTS FOR QUAD CITIES NUCLEAR POWER STATION, 2023 Annual Basellne, Nonnallzed Annual Monitoring Location BA(mrem)

BA+ MDDA (mrem)

Annual Dose, MA Facility Dose, FA (mremfyr)

Outer Q-206-1 51.5 61.8 30.5 ND (cont'd)

Q-206-2 47.2 57.5 26.6 ND Q-207-1 52.5 62.8 32.7 ND Q-207-4 55.0 65.3 32.8 ND Q-208-1 52.3 62.6 31.3 ND Q-208-2 58.4 68.7 39.9 ND Q-209-1 56.0 66.3 37.4 ND Q-209-4 53.1 63.4 30.2 ND Q-210-1 60.0 70.3 35.9 ND Q-210-4 58.6 68.9 36.1 ND Q-210-5 42.7 53.0 14.0 ND Q-211-1 64.4 74.7 36.7 ND Q-211-2 66.0 76.3 36.1 ND Q-212-1 51.7 62.0 29.0 ND Q-212-2 42.5 52.8 12.9 ND Q-213-1 47.8 58.1 22.2 ND Q-213-2 45.6 55.9 22.6 ND Q-214-1 50.7 61.0 24.5 ND Q-214-2 54.4 64.7 28.3 ND Q-215-1 50.1 60.4 24.7 ND Q-215-2 55.7 66.0 38.4 ND Q-216-1 61.6 71.9 32.5 ND Q-216-2 56.4 66.7 31.3 ND ND = Not Detected C-18

FIGURE C-1 Surface Water - Gross Beta - Stations Q-33 and Q-34 (C)

Collected in the Vicinity of QCNPS, 2000 - 2023 12.0 10.0 8.0 6.0 4.0 2.0 Q-33 Cordova 0.0 ---------------------

01-01-00 12.0 10.0 8.0 6.0 2.0 12-31-05 12-31-11 12-30-17 12-30-23 Q-34 (C) Camanche 0.0 +------+------1-----~1--------t 01-01-00 12-31-05 12-31-11 12-30-17 12-30-23 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY 2005 C-19

FIGURE C-2 Surface Water -Tritium - Stations Q-33 and Q-34 (C)

Collected in the Vicinity of QCNPS, 2000 - 2023 s

CJ Cl.

s (J

Cl.

Q-33 Cordova 500 400 300 200 100 0

01-01-00 12-31-05 12-31-11 12-30-17 12-30-23 Q-34 (C) Camanche 500 400 300 200 100 0

01-01-00 12-31-05 12-31-11 12-30-17 12-30-23 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY 2005 C-20

FIGURE C-3 Ground Water - Tritium - Stations Q-35 and Q-36 Collected in the Vicinity of QCNPS, 2000 - 2023

..J i3 CL

.J (J

CL Q-35 McMillan Well 500 400 300 200 100 0

12-31-99 12-30-05 12-30-11 12-29-17 12-29-23 Q-36 Cordova Well 500 400 300 200 100 0

12-31-99 12-30-05 12-30-11 12-29-17 12-29-23 DUE TO VENDOR CHANGE, < VALUES ARE LLD VALUES JANUARY THROUGH JUNE 2005 AND MDC VALUES AFTER JULY 2005 C-21

FIGURE C-4 Air Particulates - Gross Beta-Stations Q-01 and Q-O2 Collected in the Vicinity of QCNPS, 2000 - 2023 70.0 60.0 50.0

-E

~ 40.0 q 30.0 w

~ 20.0 10.0 Q-01 Onsite No. 1 0.0 -+-----+------+-----+------!

01-07-00 01-05-06 01-04-12 01-02-18 01-01-24 Q-02 Onsite No. 2 70.0 60.0 50.0

~

40.0 0

CL..,

30.0 9

w 0

20.0 10.0 0.0 01-07-00 01-05-06 01-04-12 01-02-18 01-01-24 C-22

FIGURE C-5 Air Particulates - Gross Beta-Stations Q-03 and Q-O4 Collected in the Vicinity of QCNPS, 2000 - 2023 60.0 50.0 40.0

§

~ 30.0 9

~ 20.0 10.0 Q-03 Onsite No. 3 0.0 +-------+-----+------+-----t 01-07-00 60.0 50.0 40.0

§

~ 30.0 9

w 20.0 0....

10.0 01-05-06 01-04-12 01-02-18 01-01-24 Q-04 Nitrin 0.0 +-------+------+-----+-----1 01-07-00 01-05-06 01-04-12 01-02-18 01-01-24 C-23

FIGURE C-6 Air Particulates - Gross Beta-Station Q-07 (C)

Collected in the Vicinity of QCNPS, 2000 - 201 0 Q-07 (C) Clinton 70.0 60.0 50.0 M

E 40.0

~

M 30.0 9

1/J 0

20.0 10.0 0.0 01-07-00 03-19-02 05-29-04 08-09-06 10-19-08 12-30-10 This location was removed from the program in January 2011 due to updated annual average meteorology.

This data is retained in the report for historical comparision.

C-24

FIGURE C-7 Air Particulates - Gross Beta-Stations Q-13 and Q-16 Collected in the Vicinity of QCNPS, 2005 - 2023 60.0 50.0 i 40.0 0 a.

30.0

~

0 20.0 10.0 Q-13 Princeton 0.0 +-----t-----1--------1....-------t 07-08-05 60.0 50.0 40.0 30.0 20.0 10.0 02-19-10 10-03-14 05-17-19 12-29-23 Q-16 Low Moor 0.0 -+-----+------t------1--------t 07-08-05 02-19-10 10-03-14 05-17-19 12-29-23 AIR PARTICULATE GROSS BETA ANALYSES OF FAR FIELD LOCATIONS STARTED IN JULY 2005 C-25

FIGURE C-8 Air Particulates - Gross Beta-Stations Q-37 and Q-38 Collected in the Vicinity of QCNPS, 2005 - 2023 60.0 50.0 M

40.0

~

0

0.

30.0 C')

c;,

~ 20.0 10.0 Q-37 Meredosia Road 0.0 +------+--------,1---------t--

t 07-08-05 02-19-10 10-03-14 05-17-19 12-29-23 Q-38 Fuller Road 70.0 60.0 50.0 C')

~ 40.0 0 0.

C')

30.0 c;,

w 0

20.0 10.0 0.0 07-01-05 02-14-10 09-30-14 05-16-19 12-30-23 AIR PARTICULATE GROSS BETA ANALYSES OF FAR FIELD LOCATIONS STARTED IN JULY 2005 C-26

FIGURE C-9 Air Particulates - Gross Beta-Station Q-41 Collected in the Vicinity of QCNPS, 2009 - 2023 60.0 50.0 C'>

40.0

~

'6_

30.0 C')

9

~ 20.0 10.0 Q-41 Camanche 0.0 +-----+------+----1------1 01-03-09 10-03-12 07-03-16 04-02-20 01-01-24 Air Particulates - Gross Beta-Station Q-42 (C)

Collected in the Vicinity of QCNPS, 201 0 - 2023 Q-42 Leclaire (Control) 60.0 50.0 C')

40.0

~

0 a.

30.0 C')

9 w

20.0 0...

10.0 0.0 12-31-10 04-01-14 07-01-17 09-30-20 12-31-23 C-27

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APPENDIX D INTER-LABORATORY COMPARISON PROGRAM

Intentionally left blank

Analytics Environmental Radioactivity Cross Check Program Table D.1 Teledlne Brown En9ineerin9 Environmental Services Identification TBE Known Ratio of TBE to Month/Year Number Matrix Nuclide Units Reported Value (a)

Analytics Result Evaluation (bl Value March 2023 E13826 Milk Sr-89 pCi/L 70.5 93.1 0.76 w

Sr-90 pCi/L 12.3 14.7 0.84 A

E13827 Milk Ce-141 pCi/L 127 139 0.91 A

Co-58 pCi/L 119 131 0.91 A

Co-60 pCi/L 250 279 0.90 A

Cr-51 pCi/L 246 302 0.82 A

Cs-134 pCi/L 172 200 0.86 A

Cs-137 pCi/L 125 140 0.89 A

Fe-59 pCi/L 122 122 1.00 A

1-131 pCi/L 70.2 82.0 0.86 A

Mn-54 pCi/L 165 180 0.92 A

Zn-65 pCi/L 306 306 1.00 A

E13828 Charcoal 1-131 pCi 79.0 89.9 0.88 A

E13829 AP Ce-141 pCi 91.9 87.8 1.05 A

Co-58 pCi 87.5 82.5 1.06 A

Co-60 pCi 199 176 1.13 A

Cr-51 pCi 218 191 1.14 A

Cs-134 pCi 119 126 0.94 A

Cs-137 pCi 92.4 88.7 1.04 A

Fe-59 pCi 95.5 76.9 1.24 w

Mn-54 pCi 120 113 1.06 A

Zn-65 pCi 179 193 0.93 A

E13830 Soil Ce-141 pCi/g 0.224 0.220 1.02 A

Co-58 pCi/g 0.193 0.207 0.93 A

Co-60 pCi/g 0.406 0.441 0.92 A

Cr-51 pCi/g 0.464 0.477 0.97 A

Cs-134 pCi/g 0.334 0.316 1.06 A

Cs-137 pCi/g 0.270 0.288 0.94 A

Fe-59 pCi/g 0.183 0.193 0.95 A

Mn-54 pCi/g 0.263 0.284 0.93 A

Zn-65 pCi/g 0.475 0.484 0.98 A

E13831 AP Sr-89 pCi 99.4 90.8 1.09 A

Sr-90 pCi 14.6 14.3 1.02 A

(a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning-reported result falls within 0. 70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< 0. 70 and > 1. 30 0-1 (Page 1 of 2)

Analytics Environmental Radioactivity Cross Check Program Table D.1 Teled~ne Brown En9ineerin9 Environmental Services Identification TBE Known Ratio of TBE to Month/Year Number Matrix Nuclide Units Reported Value (al Analytics Result Evaluation (bl Value September 2023 E13832 Milk Sr-89 pCi/L 49.8 71.4 0.70 w

Sr-90 pCi/L 7.28 12.8 0.57 N(1l E13833 Milk Ce-141 pCi/L 93.4 104 0.90 A

Co-58 pCi/L 58.2 65.8 0.88 A

Co-60 pCi/L 190 223 0.85 A

Cr-51 pCi/L 207 205 1.01 A

Cs-134 pCi/L 96.0 114 0.84 A

Cs-137 pCi/L 121 141 0.86 A

Fe-59 pCi/L 78.8 78.8 1.00 A

1-131 pCi/L 27.9 37.4 0.75 w

Mn-54 pCi/L 128 146 0.88 A

Zn-65 pCi/L 185 203 0.91 A

E13834 Charcoal 1-131 pCi 76.9 78.7 0.98 A

E13835 AP Ce-141 pCi 91.9 87.1 1.05 A

Co-58 pCi 58.7 55.2 1.06 A

Co-60 pCi 200 187 1.07 A

Cr-51 pCi 192 172 1.12 A

Cs-134 pCi 89.6 96 0.94 A

Cs-137 pCi 109 119 0.92 A

Fe-59 pCi 68.3 66.1 1.03 A

Mn-54 pCi 129 123 1.05 A

Zn-65 pCi 163 171 0.96 A

E13836 Soil Ce-141 pCi/g 0.228 0.184 1.24 w

Co-58 pCi/g 0.103 0.116 0.89 A

Co-60 pCi/g 0.364 0.394 0.92 A

Cr-51 pCi/g 0.371 0.362 1.02 A

Cs-134 pCi/g 0.176 0.202 0.87 A

Cs-137 pCi/g 0.285 0.315 0.90 A

Fe-59 pCi/g 0.140 0.139 1.00 A

Mn-54 pCi/g 0.237 0.259 0.92 A

Zn-65 pCi/g 0.349 0.359 0.97 A

E13837 AP Sr-89 pCi 74.6 80.2 0.93 A

Sr-90 pCi 13.9 14.4 0.96 A

(a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W= Acceptable with warning-reported result falls within 0. 70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< 0. 70 and > 1. 30 (1) See NCR 23-24 D-2 (Page 2 of 2)

0OE's Mixed Analyte Performance Evaluation Program (MAPEP)

Table 0.2 Teled~ne Brown Engineering Environmental Services Identification TSE Known Acceptance Month/Year Number Matrix Nuclide Units Reported Value (al Range Evaluation (bl Value February 2023 23-MaS48 Soil Ni-63 Sq/kg 294 1130 791 -1469 N(3l 23-MaSU48 Urine Cs-134 Sq/L 9.92 10 6.7 - 12.4 A

Cs-137 Sq/L 0.0994 (1)

A Co-57 Sq/L 9.35 8.67 6.07 -11.27 A

Co-60 Sq/L 9.03 8.13 5.69-10.57 A

Mn-54 Sq/L 11.80 10.0 7.0 - 13.0 A

U-234 Sq/L 0.01 Not spiked U-238 Sq/L 0.01 Not spiked Zn-65 Sq/L 10.60 9.29 6.50 -12.08 A

23-MaW48 Water Ni-63 Sq/L 23.1 27.3 19.1 - 35.5 A

23-RdV48 Vegetation Cs-134 Sq/sample 5.6 7.6 5.32 - 9.88 w

Cs-137 Sq/sample 0.03 (1)

A Co-57 Sq/sample 5.9 6.9 4.85-9.01 A

Co-60 Sq/sample 5.00 6.51 4.56-8.46 w

Mn-54 Sq/sample 6.08 8.03 5.62 - 10.44 w

Sr-90 Sq/sample 0.05 (1)

N<4l Zn-65 Sq/sample 5.49 7.43 5.20- 9.66 w

August2023 23-MaS49 Soil Fe-55 Sq/kg 346 1280 896 - 1664 N<si Ni-63 Sq/kg 1260 1370 959 - 1781 A

23-MaW49 Water Ni-63 Sq/L 1.0 1

(2)

A 23-RdV49 Vegetation Cs-134 Sq/sample 3.860 4.98 3.49-6.47 w

Cs-137 Sq/sample 0.027 (1)

A Co-57 Sq/sample 3.88 4.24 2.97

5.51 A

Co-60 Sq/sample 2.37 2.79 1.95

3.63 A

Mn-54 Sq/sample 2.04 2.56 1.79-3.33 w

Sr-90 Sq/sample 0.96 1.17 0.82 - 1.52 A

Zn-65 Sq/sample

-0.514 (1)

A (a) The MAPEP known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) DOEIMAPEP evaluation:

A = Acceptable - reported result falls within ratio limits of 0. 80-1. 20 W= Acceptable with warning-reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of< 0. 70 and> 1.30 (1) False positive test (2) Sensitivity evaluation (3) See NCR 23-08 (4) See NCR 23-09 (5) Initial evaluation - See CAR 23-31 0-3 (Page 1 of1)

ERA Environmental Radioactivity Cross Check Program Table D.3 Teledine Brown Engineering Environmental Services Month/Year Identification Matrix Nuclide Units TBE Reported Known Acceptance Evaluation

Number Value Value<*>

Limits March 2023 MRAD-38 Water Am-241 pCi/L 28.1 32.1 22.0-41.0 A

Fe-55 pCi/L 1180 1380 811-2010 A

Pu-238 pCi/L 65.6 70.7 42.5 - 91.6 A

Pu-239 pCi/L 82.9 92.4 57.2-114 A

Soil Sr-90 pCi/kg 2630 2580 803 -4020 A

AP GR-A pCi/filter 69.6 76.8 40.1-127 A

GR-8 pCi/filter 36.8 32.8 19.9 -49.6 A

April 2023 RAD-133 Water Ba-133 pCi/L 26.0 22.3 17.1-25.8 N<1>

Cs-134 pCi/L 72.1 77.6 63.4-85.4 A

Cs-137 pCi/L 62.1 63.1 56.8-72.2 A

Co-60 pCi/L 32.6 30.3 26.7 - 36.1 A

Zn-65 pCi/L 253 242 218 - 283 A

GR-A pCi/L 34.2 29.2 14.9-38.2 A

GR-8 pCi/L 64.3 60.7 41.8-67.4 A

U-Nat pCi/L 61.75 62.7 51.2-69.0 A

H-3 pCi/L 13,300 12700 11,100-14,000 A

Sr-89 pCi/L 67.0 61.1 49.2 -69.0 A

Sr-90 pCi/L 36.5 36.0 26.4-41.5 A

1-131 pCi/L 24.3 28.7 23.9 - 33.6 A

September 2023 MRAD-39 Water Am-241 pCi/L 54.0 71.0 48.7 - 90.8 A

Fe-55 pCi/L 2430 2630 1550- 3830 A

Pu-238 pCi/L 172 177 106 -229 A

Pu-239 pCi/L 171 182 113 - 224 A

Soil Sr-90 pCi/kg 9580 6800 2120 - 10,600 A

AP GR-A pCi/filter 82.2 79.8 41.7-131 A

GR-8 pCi/filter 54.3 42.6 25.8 - 64.4 A

October 2023 RAD-135 Water Ba-133 pCi/L 86.3 92.2 73.8-111 A

Cs-134 pCi/L 38.4 41.2 27.9-54.5 A

Cs-137 pCi/L 194 199 161 - 237 A

Co-60 pCi/L 49.5 47.8 33.8-61.8 A

Zn-65 pCi/L 59.7 57.0 23.7 - 90.3 A

GR-A pCi/L 53.2 70.6 54.0 - 87.2 N<2>

GR-8 pCi/L 46.9 42.2 30.5 - 53.9 A

U-Nat pCi/L 51.26 51.7 45.9-57.5 A

H-3 pCi/L 20,100 22,900 19,700-26,100 A

Sr-89 pCi/L 51.1 38.2 25.2 - 51.2 A

Sr-90 pCi/L 31.7 35.7 30.3-41.1 A

1-131 pCi/L 23.5 29.7 25.8 - 33.6 N<J>

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

(b) ERA evaluation:

A = Acceptable - Reported value falls within the Acceptance Limits N = Not Acceptable - Reported value falls outside of the Acceptance Limits (1) See NCR 23-10 (2) See NCR 23-20 (3) See NCR 23-21 D-4 (Page 1 of 1)

APPENDIX E ERRATA DATA

Intentionally left blank

There is no errata data for 2023.

E-1

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Docket No:

50-254 50-265 QUAD CITIES NUCLEAR POWER STATION UNITS 1 and 2 Annual Radiological Groundwater Protection Program Report 1 January through 31 December 2023 Prepared By Teledyne Brown Engineering Environmental Services Constellation~

Quad Cities Nuclear Power Station Cordova, IL 61242 May2024

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Table Of Contents I. Summary and Conclusions.............................................................................................. 1 II. Introduction...................................................................................................................... 6 A. Objectives of the RGPP....................................................................................... 6 B. Implementation of the Objectives........................................................................ 6 C. Program Description............................................................................................ 7 Ill. Program Description....................................................................................................... 8 A. Sample Analysis.................................................................................................. 8 B. Data Interpretation............................................................................................... 8 IV. Results and Discussion............................................................................................... 1 O A. Groundwater Results......................................................................................... 10 B. Summary of Results - Inter-laboratory Comparison Program........................... 11 C. Leaks, Spills, and Releases.............................................................................. 11 D. Trends............................................................................................................... 11 E. Investigations..................................................................................................... 11 F. Actions Taken.................................................................................................... 11

Appendix A Tables Table A-1 Figures Figure A-1 Figure A-2 Figure A-3 Appendix B Tables Table B-1.1 Table B-1.2 Table B-1.3 Table B-I1.1 Appendices Location Designation Radiological Groundwater Protection Program - Sampling Locations, Quad Cities Nuclear Power Station, 2023 Sampling Locations Near the Site Boundary of the Quad Cities Nuclear Power Station, 2023 Sentinel Monitoring Point Locations, Quad Cities Nuclear Power Station, 2023 Radwaste Area Monitoring Point Locations, Quad Cities Nuclear Power Station, 2023 Data Tables Concentrations of Tritium, Strontium and Gross Alpha in Groundwater Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Concentrations of Hard-To-Detects in Groundwater Samples Collected in the Vicinity of Quad Cities Nuclear Power Station, 2023 Concentrations of Tritium in Groundwater Samples Collected and Analyzed by Quad Cities Station Personnel, 2023 ii

I.

Summary and Conclusions In 2006, Constellation undertook a Fleetwide Assessment of groundwater at and in the vicinity of its nuclear power generating facilities for the presence of radionuclides. The data collected from the Quad Cities Station as part of the Fleetwide Assessment was summarized in a report entitled "Hydrogeologic Investigation Report, Fleetwide Assessment, Quad Cities Generation Station, Cordova, Illinois", dated September 2006. This report on the Radiological Groundwater Protection Program (RGPP) conducted for the Quad Cities Nuclear Power Station (QCNPS) by Constellation Nuclear covers the period 01 January 2023 through 31 December 2023.

The Quad Cities Nuclear Power Station (QCNPS) has experienced leaks from underground piping and spills from systems containing radioactive water over its 50+ year history. These incidents have created a few areas of localized contamination within the owner-controlled area. The liquid scintillation analyses of groundwater in some of these areas show measurable concentrations of tritium (H-3).

Radwaste Piping Vault On March 28, 2018, approximately three to four feet of water was observed in a Radwaste Piping Vault, located adjacent to monitoring well QC-GP-18. Samples were collected from the water in the vault as well as the groundwater in QC-GP-18. Both samples had tritium concentration of approximately 4.5 million pCi/L. Approximately 5,000 gallons of water was pumped from the vault and processed through the Station's Radwaste System on March 28, 2018.

Remediation of the groundwater near the RW Pipe Vault began on March 29, 2018 via pumping from monitoring well QC-GP-18 and processing through the Stations Radwaste System.

On March 29, 2018, the station contacted the Illinois Environmental Protection Agency (IEPA) and Illinois Emergency Management Agency (IEMA) to report a release of a radionuclide pursuant to 35 Ill. Adm. Code 1010.202. The station also notified the Nuclear Regulatory Commission (NRC) of these reports to state agencies to satisfy 1 0CFR50.72(b)(2)(xi), notification of the NRC for any event related to the health and safety of the public for which a notification to other government agencies has been or will be made (EN#53299).

The cause of release into the vault and QC-GP-18 was determined to be a leaking pipe clamp located within the RW Pipe Vault and degraded seams in the concrete vault which allowed water to seep from the vault into the surrounding groundwater. The pipe clamp was repaired and the concrete/degraded seams in the vault sealed.

On April 2, 2018, a remediation well (RW-1) was installed near the vault and QC-GP-18 to assist in remediating the tritium activity in groundwater. The remediation well began pumping groundwater on April 10, 2018 for processing through the Station's Radwaste System. On May 2, 2018 effluent from RW-1 was routed to the Discharge bay for release. On May 7, 2018 effluent from QC-GP-18 was routed to the Discharge Bay for release. On November 24, 2018, both well remediation pumps were shut down for the winter season.

Between April 16, 2019 and November 6, 2019, approximately 1.1 million gallons of groundwater was pumped from the vicinity of the RW Pipe Vault for remediation purposes. Between March 12, 2020 and December 22, 2020, approximately 1.8 million gallons of groundwater was pumped from the vicinity of the RW Pipe Vault for remediation purposes. There was no active pumping for remediation in the vicinity of the RW Pipe Vault in 2021 and 2022 due to an underground Fire Protection Piping modification in the vicinity of the RW Pipe Vault.

Remediation commenced June 14, 2023, with approximately 213,000 gallons of groundwater pumped prior to being shut down on July 31, 2023. Due to the installation and operation of newly installed remediation well QC-RW-2 there was not sufficient groundwater to continue to remediate out of QC-RW-1. QC-RW-2 is located approximately 1 0' from QC-RW-1.

BCCST On March 10, 2021, groundwater sample results from well QC-GP-12 showed a tritium concentration of 2.8 million pCi/L. Sample results from nearby well QC-GP-16 showed a tritium concentration of 1.9 million pCi/L. QC-GP-12 and QC-GP-16 are located in the Contaminated Condensate Storage Tank and ancillary piping area. Five additional groundwater monitoring wells were installed (Stick wells #1, #2, #4, and #5, and groundwater monitoring well MW-QC-117S) for assistance with leak detection location and groundwater monitoring. A new remediation well was installed (MW-R-2D2) and remediation commenced on March 15, 2021.

On March 10, 2021, the station contacted the Illinois Environmental Protection Agency (IEPA) and Illinois Emergency Management Agency (IEMA) to report a release of a radionuclide pursuant to 35 Ill. Adm. Code 1010.202. The station also notified the Nuclear Regulatory Commission (NRC) of the report to state agencies to satisfy 1 0CFR50.72(b)(2)(xi), notification of the NRC for any event related to the health and safety of the public for which a notification to other government agencies has been or will be made (EN#55132).

As part of the investigation to identify the source, the "B" Condensate Storage Tank was drained and inspected. During the inspection a hole measuring 1/4" x 5/16" (approximately the width of a pencil) was discovered on the tank floor which allowed water to seep into the surrounding groundwater. The hole was repaired prior to returning to service. In October 2021 the "B" Condensate Storage Tank floor was restored to original tank floor thickness and "A" Condensate Storage Tank floor was returned to original tank floor thickness in January 2022.

On March 12, 2021, an extraction well (MW-R-2D2) was installed near the Contaminated Condensate Storage Tank area to assist in remediating the tritium activity in groundwater. The extraction well began pumping groundwater on March 15, 2021, with effluent routed to Quad Cities Station's permitted outfall 001 /002.

Remediation out of MW-R-2D2 was shut down in November 2023, to evaluate groundwater conditions in the area of the historic leak. Prior to remediation QC-GP-12 tritium concentration was 3.2 million pCi/L. As of December 5, 2023, QC-GP-12 tritium concentration was <2,000 pCi/L.

Radwaste Building and Piping Vault/Main Stack Piping Areas Quad Cities station resumed remediation in the Radwaste Vault area at monitoring wells QC-RW-1 and QC-GP-18 on June 14, 2023, after stopping remediation in the area in December of 2020 due to the underground Fire Protection Piping modification work in the area. From June 19, 2023, to June 26, 2023, the tritium concentration in QC-RW-1 increased from 11,200 pCi/L to 323,000 pCi/L and QC-GP-18 increased from 37,500 pCi/L to 84,100 pCi/L. Initial actions following the tritium concentration increase was developing a support/

refute matrix to identify the potential source of the increased tritium concentration.

Troubleshooting activities were generated from the support/refute matrix.

On July 3, 2023, the station contacted the Illinois Environmental Protection Agency (IEPA) and Illinois Emergency Management Agency (IEMA) to report a release of a radionuclide pursuant to 35 Ill. Adm. Code 1010.202. The station also notified the Nuclear Regulatory Commission (NRC) of the report to state agencies to satisfy 1 0CFR50. 72(b)(2)(xi), notification of the NRC for any event related to the health and safety of the public for which a notification to other government agencies has been or will be made (EN#56606).

Station personnel performed an evaluation of SSC's (Systems, Structures and Components) and identified leakage from a degraded weld seam at the bottom of the Waste Collector Tank (WCT) within the Radwaste Building. Liquids from this system were leaking onto the concrete floor. The tritium concentration in the WCT is over 5 million pCi/L. The WCT was taken out of service and drained on July 17, 2023, and repairs were completed on July 19, 2023. After removing the standing water in the WCT room, station personnel identified two cracks in the concrete floor. These cracks, as well as seams along the perimeter of the room, were identified as a potential pathway to groundwater.

Five additional monitoring wells (QC-GP-19 through QC-GP-23) were installed on July 13 through 19, 2023, between the Radwaste Building and Cribhouse, to assist in delineating the tritium plume. On July 25, 2023, extraction well QC-RW-2 was installed and began pumping water on July 27, 2023, to assist in the remediation of the groundwater plume. QC-RW-2 originally started pumping at 20 gpm, but the groundwater extraction rate was increased to 25 gpm on July 28, 2023, and it has since been operating at this extraction rate. The operation of the extraction well at its current pumping rate has lowered the water table in the area of the Radwaste Building and Cribhouse by approximately three to nine feet and QC-RW-2 appears to be effectively capturing the known extent of the tritium plume. An additional well was installed at the beginning of November 2023, downgradient of the Main Chimney to evaluate if impacted groundwater was migrating north of the Cribhouse prior to the installation of extraction well QC-RW-2. Tritium has not been detected in samples collected from this well since being installed. Additionally, well sampling frequency was increased to monitor tritium concentrations. It should be noted that the newly installed wells are currently not a part of the station's RGPP program.

During August and September 2023, two excavation projects were initiated in the area of the Main Chimney and the Radwaste Building to assess the condition of the Main Chimney drain lines. At the first excavation performed at the Ma in Chimney an approximate 4-8 drop/sec leak was found at the penetration of the

north branch. At the second excavation at the Main Chimney an approximate 1.1 gpm leak was found at the penetration of the south branch. Controls were put in place for both leaks to prevent further contamination of the ground. The leaks were found to be permeating between the Main Chimney concrete basement slab which encases the pipe, and the pipe's outer wall. Upon completion of G-Scans, the pipe penetrations, exposed sections of pipes, and construction joints were coated with a Framatome spray which eliminated the leakage. Upon completion of work both excavations were backfilled.
Remediation out of QC-RW-2 is on-going. Prior to beginning remediation out of QC-RW-2, the highest tritium concentration was 851,000 pCi/L. At the end of December 2023, the highest tritium concentration was 11,000 pCi/L.
The RGPP designates wells into categories. Well designation categories include background, mid-field, perimeter, source and idle.
This report covers groundwater samples collected from the environment on station property in 2023. During that period, RGPP samples were collected from 45 locations.
2023 sample locations included 37 designated monitoring wells and 5 production wells (two of which are used for site drinking water), and 3 remediation wells.
Sample frequency and analysis varies with well designation. Typical frequency/
analyses include quarterly for tritium, annual for strontium, biennial for gamma, gross alpha, and every five years for iron-55 (Fe-55) and nickel-63 (Ni-63),
depending on the designated well category. Samples from 19 of the designated monitoring wells were collected by a contractor (Environmental, Inc.) and analyzed by a contract lab (Teledyne Brown) and onsite station personnel. The remaining sample locations were collected by site personnel and analyzed for tritium onsite by station personnel and by Teledyne Brown for tritium and other parameters.
In the case of tritium, Constellation specified that its contract laboratories achieve a lower limit of detection 10 times lower than that required by federal regulation.
Most of the tritium that was detected in groundwater at the Station is on the south and west side of the Reactor/Turbine buildings. Tritium concentrations ranged from less than the LLD of 200 pCi/L up to 851,000 pCi/L in a monitoring well.
Gamma-emitting radionuclides were detected above their respective MDC's for naturally occurring potassium-40 (K-40) in 3 locations with concentrations ranging from 28 - 711 pCi/L. Manganese-54 (Mn-54) at a concentration of 25 pCi/L and cobalt-60 (Co-60) at concentration of 178 pCi/L were detected in newly installed well QC-GP-22. This detection is believed to be residual impacts from an historic release since there were no gamma-radionuclide detections in wells closer to the Radwaste Building or Main Chimney.
Strontium-89 (Sr-89) was not detected at concentrations greater than the Lower Limit of Detection (LLD) of 10.0 pCi/L. Strontium-90 (Sr-90) was detected at 1 location with concentrations ranging from 3.9 - 16.3 pCi/L.
Gross Alpha analyses in the dissolved and suspended fractions were performed at 9 locations. Gross Alpha (dissolved) was detected at 1 location with a concentration of 36.3 pCi/L. Gross Alpha (suspended) was detected at 2 locations with concentrations of 20.7 - 36.0 pCi/L.
Select Transuranic/Hard-To-Detect analyses were performed on 9 monitoring wells. The analyses included Am-241, Cm-242, Cm-243/244, Pu-238, Pu-239/240, U-234, U-235, U-238, Fe-55 and Ni-63. U-234 was detected at 6 locations with concentrations ranging from 0.91 - 8.26 pCi/L. U-238 was detected at six locations with concentrations ranging from 0.61 - 6.40 pCi/L. U-234 and U-238 are commonly found in groundwater at low concentrations due to the naturally occurring Radium (Uranium) Decay Series. All other Select Transuranic/Hard-To-Detect nuclides were not detected at concentrations greater than their respective MDCs.
In assessing all the data gathered for this report, it was concluded that the operation of QCNPS had no adverse radiological impact on the environment offsite of QCNPS.
II.
Introduction The Quad Cities Nuclear Power Station (QCNPS), consisting of two 2957 MWth boiling water reactors owned and operated by Constellation Corporation, is located in Cordova, Illinois along the Mississippi River. Unit No. 1 went critical on 16 March 1972. Unit No. 2 went critical on 02 December 1973. The site is located in northern Illinois, approximately 182 miles west of Chicago, Illinois.
A.
Objectives of the RGPP The long-term objectives of the RGPP are as follows:
1. Identify suitable locations to monitor and evaluate potential impacts from station operations before significant radiological impact to the environment and potential drinking water sources.
2. Understand the local hydrogeologic regime in the vicinity of the station and maintain up-to-date knowledge of flow patterns on the surface and shallow subsurface.
3. Perform routine water sampling and radiological analysis of water from selected locations.
4. Report new leaks, spills, or other detections with potential radiological significance to stakeholders in a timely manner.
5. Regularly assess analytical results to identify adverse trends.
6. Take necessary corrective actions to protect groundwater resources.
B.
Implementation of the Objectives.
The objectives identified have been implemented at QCNPS as discussed below:
1. Constellation and its consultant identified locations as described in the Phase 1 study. Phase 1 studies were conducted by Conestoga Rovers and Associates (CRA) and the results and conclusions were made available to state and federal regulators in station specific reports.
2.
The QCNPS reports describe the local hydrogeologic regime.
Periodically, the flow patterns on the surface and shallow subsurface are updated based on ongoing measurements.
3.
QCNPS will continue to perform routine sampling and radiological analysis of water from selected locations.
4.
QCNPS has implemented procedures to identify and report leaks, spills, or other detections with potential radiological significance in a timely manner.
5.
QCNPS staff and consulting hydrogeologist assess analytical results on an ongoing basis to identify adverse trends.
C.
Program Description
1.
Sample Collection Sample locations can be found in Table A-1 and Figures A-1 & A-2, Appendix A.
Groundwater Samples of water are collected, managed, transported and analyzed in accordance with approved procedures following regulatory methods.
Sample locations, sample collection frequencies and analytical frequencies are controlled in accordance with approved station procedures. Contractor and/or station personnel are trained in the collection, preservation management, analysis and shipment of samples, as well as in documentation of sampling events. Analytical laboratories are subject to internal quality assurance programs, inter-laboratory cross-check programs, as well as nuclear industry audits.
Station personnel review and evaluate all analytical data deliverables after initial review by the contractor.
Analytical data results are reviewed by both station personnel and an independent hydrogeologist for adverse trends or changes to hydrogeologic conditions.
Ill.
Program Description This section covers those analyses performed by Teledyne Brown Engineering (TSE) on samples collected in 2023.
A.
Sample Analysis This section describes the general analytical methodologies used by TSE and station personnel to analyze the environmental samples for radioactivity for the Quad Cities Nuclear Power Station RGPP in 2023.
Sample analysis and frequency is based upon well location, assessed risk, and site hydrogeology as described in the RGPP.
In order to achieve the stated objectives, the current program includes the following analyses:
1.
Concentrations of gamma emitters in groundwater
2.
Concentrations of strontium in groundwater
3.
Concentrations of tritium in groundwater
4.
Concentrations of gross alpha in groundwater
5.
Concentrations of Am-241 in groundwater
6.
Concentrations of Cm-242 and Cm-243/244 in groundwater
7.
Concentrations of Pu-238 and PU-239/240 in groundwater
8.
Concentrations of U-234, U-235 and U-238 in groundwater
9.
Concentrations of Fe-55 in groundwater
10. Concentrations of Ni-63 in groundwater B.
Data Interpretation The radiological data collected prior to QCNPS becoming operational were used as a baseline with which these operational data were compared. For the purpose of this report, QCNPS was considered operational at initial criticality. 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 specified by federal regulation as a minimum sensitivity value that must be achieved routinely by the analytical parameter.
2.
Laboratory Measurements Uncertainty The estimated uncertainty in measurement of tritium in environmental samples is frequently on the order of 50% of the measurement value.
Statistically, the exact value of a measurement is expressed as a range with a stated level of confidence. The convention is to report results with a 95% level of confidence. The uncertainty comes from calibration standards, sample volume or weight measurements, sampling uncertainty and other factors. Constellation reports the uncertainty of a measurement created by statistical process (counting error) as well as all sources of error (Total Propagated Uncertainty or TPU). Each result has two values calculated. Constellation reports the TPU by following the result with plus or minus+/- the estimated sample standard deviation, as TPU, that is obtained by propagating all sources of analytical uncertainty in measurements.
Analytical uncertainties are reported at the 95% confidence level in this report for reporting consistency with the Annual Radiological Environmental Operating Report (AREOR) for samples analyzed by TBE.
Gamma spectroscopy results for each type of sample were grouped as follows:
For groundwater 14 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, 1-131, Cs-134, Cs-137, Ba-140 and La-140 were reported in 2023.
IV.
Results and Discussion A.
Groundwater Results Groundwater samples were collected from on-site wells in accordance with the station RGPP. Analytical results and anomalies are discussed below:
Tritium Samples from all locations were analyzed for tritium activity (Table B-1.1 &
B-11.1 Appendix B). Tritium values ranged from less than LLD of 200 pCi/L to 851,000 pCi/L. Samples obtained near the site boundaries were <200 pCi/L. Based on Quad Cities 2022 GHD Hydrogeological Investigation Report, "there is no risk of exposure associated with groundwater ingestion off Station property," "there is no risk of exposure associated with groundwater ingestion at the Station" and "there is no current risk of exposure associated with surface water users off the Station property."
The location most representative of potential offsite user of drinking water was <200 pCi/L.
Strontium Strontium-89 (Sr-89) was not detected at concentrations greater than the Lower Limit of Detection (LLD) of 10.0 pCi/L. Strontium-90 (Sr-90) was detected at 1 location with concentrations ranging from 3.9 - 16.3 pCi/L.
(Table B-1.1 Appendix B)
Gross Alpha (dissolved and suspended)
Gross Alpha analyses in the dissolved and suspended fractions were performed at 9 locations. Gross Alpha (dissolved) was detected at 1 location with a concentration of 36.3 pCi/L. Gross Alpha (suspended) was detected at 2 locations with concentrations of 20.7 - 36.0 pCi/L..
(Table B-1.1 Appendix B)
Gamma Emitters Gamma analyses were detected above their respective MDC's for naturally occurring potassium-40 (K-40) in 3 locations with concentrations ranging from 28 - 711 pCi/L. Manganese-54 (Mn-54) at a concentration of 25 pCi/L and cobalt-60 (Co-60) at concentration of 178 pCi/L were detected in newly installed well, QC-GP-22. This detection is believed to be residual impacts from a historic release since there were no gamma radionuclide detections in wells closer to the Radwaste Building or Main Chimney.
(Table B-1.2, Appendix B).
Select Transuranic/Hard-To-Detect Select Transuranic/Hard-To-Detect analyses were performed on 9 monitoring wells. The analyses included Am-241, Cm-242, Cm-243/244, Pu-238, Pu-239/240, U-234, U-235, U-238, Fe-55 and Ni-63. U-234 was detected at 6 locations with concentrations ranging from 0.91 - 8.26 pCi/L.
U-238 was detected at 6 locations with concentrations ranging from 0.61 -
6.4 pCi/L. U-234 and U-238 are commonly found in groundwater at low concentrations due to the naturally-occurring Radium (Uranium) Decay Series. All other Select Transuranic/Hard-To-Detect nuclides were not detected at concentrations greater than their respective MDCs.
(Table 8-1.3 Appendix 8).
B.
Summary of Results - Inter-Laboratory Comparison Program Inter-Laboratory Comparison Program results for TBE are presented in the Annual Radiological Environmental Operating Report.
C.
Leaks, Spills, and Releases There was one leak/release identified during the year. Quad Cities station resumed remediation in the Radwaste Vault area at monitoring wells QC-RW-1 and QC-GP-18 on June 14, 2023, after stopping remediation in the area in December of 2020 due to the Fire Protection Underground Piping modification work in the area. From June 19, 2023, to June 26, 2023, the tritium concentration in QC-RW-1 increased from 11,200 pCi/L to 323,000 pCi/L and QC-GP-18 increased from 37,500 pCi/L to 84,100 pCi/L. Initial actions following the tritium concentration increase was developing a support/refute matrix to identify the potential source of the increased tritium concentration. Troubleshooting activities were generated from the support/refute matrix.
On July 3, 2023, the station contacted the Illinois Environmental Protection Agency (IEPA) and Illinois Emergency Management Agency (IEMA) to report a release of a radionuclide pursuant to 35 Ill. Adm. Code 1010.202.
The station also notified the Nuclear Regulatory Commission (NRC) of the report to state agencies to satisfy 10CFR50.72(b)(2)(xi), notification of the NRC for any event related to the health and safety of the public for which a notification to other government agencies has been or will be made (EN#56606).
Five additional monitoring wells (QC-GP-19 through QC-GP-23) were installed on July 13 through 19, 2023, between the Radwaste Building and Cribhouse, to assist in delineating the tritium plume. On July 25, 2023, extraction well QC-RW-2 was installed and began pumping water on July 27, 2023, to assist in the remediation of the groundwater plume.
D.
Trends Overall, groundwater tritium concentrations have been decreasing over time at the Station.
E.
Investigations Currently no investigations are on-going.
F.
Actions Taken 1. Compensatory Actions There have been no station events requiring compensatory actions at the Quad Cities Nuclear Power Station in 2023.
2. Actions to Recover/Reverse Plumes Remediation of the March 28, 2018 Radwaste Pipe Vault began on March 29, 2018 via pumping of groundwater from monitoring well QC-GP-18 and processing through the Stations Radwaste System.
On April 2, 2018, a remediation well (RW-1) was installed near the vault and QC-GP-18 to assist in remediating the tritium activity in groundwater. The remediation well began pumping groundwater on April 10, 2018 for processing through the Station's Radwaste System.
On May 2, 2018 effluent from RW-1 was routed to the Discharge bay for release. On May 7, 2018 effluent from QC-GP-18 was routed to the Discharge Bay for release. On November 24, 2018, both well remediation pumps were shut down for the winter season. Between March 29, 2018, and November 24, 2018, approximately 1.8 million gallons of groundwater was pumped from the vicinity of the RW Pipe Vault for remediation purposes.
Between April 16, 2019 and November 6, 2019, approximately 1.1 million gallons of groundwater was pumped from the vicinity of the RW Pipe Vault for remediation purposes. Between March 12, 2020 and December 22, 2020, approximately 1.8 million gallons of groundwater was pumped from the vicinity of the RW Pipe Vault for remediation purposes. There was no active pumping for remediation in the vicinity of the RW Pipe Vault in 2021 and 2022 due to an underground Fire Protection Piping modification in the vicinity of the RW Pipe Vault.
Remediation commenced June 14, 2023, with approximately 213,000 gallons of groundwater pumped prior to being shut down on July 31, 2023. Due to the installation and operation of newly installed remediation well QC-RW-2 there was not sufficient groundwater to continue to remediate out of QC-RW-1. QC-RW-2 is located approximately 1 O' from QC-RW-1.
On March 12, 2021, an extraction well (MW-R-2D2) was installed near the Contaminated Condensate Storage Tank area to assist in remediating the tritium activity in groundwater. The extraction well began pumping groundwater on March 15, 2021, with effluent routed to Quad Cities Station's permitted outfall 001/002. Between March 15, 2021, and November 9, 2023, approximately 41.8 million gallons of groundwater was pumped from the vicinity of the Condensate Storage Tank and ancillary piping area for remediation purposes. Remediation out of MW-R-2D2 was shut down in November 2023, to evaluate groundwater conditions in the area of the historic leak.
On July 25, 2023, extraction well QC-RW-2 was installed and began pumping water on July 27, 2023, to assist in the remediation of the groundwater plume. Effluent is routed to Quad Cities Station's permitted outfall 001/002. Between July 27, 2023, and December 29, 2023, approximately 5.2 million gallons of groundwater was pumped from the vicinity of the Radwaste Area for remediation purposes.
APPENDIX A LOCATION DESIGNATION
Intentionally left blank
TABLEA-1:
Radiological Groundwater Protection Program - Sampling Locations Quad Cities Nuclear Power Station, 2023 Site Site Type Well Designation Minimum Sample Frequency MW-QC-1 Monitoring Well Source Quarterly MW-QC-2 Monitoring Well Mid-Field Semi-Annual MW-QC-3 Monitoring Well Source Quarterly MW-QC-101I Monitoring Well Idle Not Required MW-QC-101S Monitoring Well Idle Not Required MW-QC-102D Monitoring Well Perimeter Annual MW-QC-102I Monitoring Well Mid-Field Semi-Annual MW-QC-102S Monitoring Well Perimeter Annual MW-QC-103I Monitoring Well Source Quarterly MW-QC-104S Monitoring Well Source Quarterly MW-QC-105I Monitoring Well Source Quarterly MW-QC-106I Monitoring Well Mid-Field Semi-Annual MW-QC-106S Monitoring Well Mid-Field Semi-Annual MW-QC-107I Monitoring Well
Background
Annual MW-QC-108D Monitoring Well Perimeter Annual MW-QC-108I Monitoring Well Mid-Field Semi-Annual MW-QC-108S Monitoring Well Perimeter Annual MW-QC-109I Monitoring Well Mid-Field Semi-Annual MW-QC-109S Monitoring Well Perimeter Annual MW-QC-110I Monitoring Well Idle Not Required MW-QC-111D1 Monitoring Well Idle Not Required MW-QC-111D2 Monitoring Well Idle Not Required MW-QC-111I Monitoring Well Idle Not Required MW-QC-112I Monitoring Well Perimeter Annual MW-QC-113I Monitoring Well Idle Not Required MW-QC-114I Monitoring Well Idle Not Required MW-QC-115S Monitoring Well Idle Not Required MW-QC-116S Monitoring Well Idle Not Required MW-QC-117S Monitoring Well Source Quarterly MW-R-2D2 Remediation Well Mid-Field Semi-Annual SURFACE WATER #1 Surface Water Idle Not Required SURFACE WATER #2 Surface Water Idle Not Required WELL#1 Production Well Idle Not Required WELL#5 Production Well Idle Not Required WELL #6 LITTLE FISH Production Well Idle Not Required WELL #7 BIG FISH WELL Production Well Mid-Field Semi-Annual WELL #8 FIRE TRAINING WELL Production Well Idle Not Required WELL #9 Dry Cask Storage Production Well
Background
Annual WELL #10 FISH HOUSE WELL Production Well Idle Not Required WELL #11 SPRAY CANAL WELL Production Well Idle Not Required STP SAND POINT WELL Production Well Idle Not Required QC-GP-1 Sentinel Well Source Quarterly QC-GP-2 Sentinel Well Source Quarterly QC-GP-3 Sentinel Well Idle Not Required A-1
TABLE A-1:
Radiological Groundwater Protection Program - Sampling Locations Quad Cities Nuclear Power Station, 2023 Site Site Type Well Designation Minimum Sample Frequency QC-GP-4 Sentinel Well Source Quarterly QC-GP-5 Sentinel Well Source Quarterly QC-GP-6 Sentinel Well Idle Not Required QC-GP-7 Sentinel Well Idle Not Required QC-GP-8 Sentinel Well Idle Not Required QC-GP-9 Sentinel Well Source Quarterly QC-GP-10 Sentinel Well Source Quarterly QC-GP-11 Sentinel Well Idle Not Required QC-GP-12 Sentinel Well Source Quarterly QC-GP-13 Sentinel Well Idle Not Required QC-GP-14 Sentinel Well Mid-Field Semi-Annual QC-GP-15 Sentinel Well Source Quarterly QC-GP-16 Sentinel Well Idle Not Required QC-GP-17 Sentinel Well Source Quarterly QC-GP-18 Sentinel Well Source Quarterly QC-GP-19 Monitoring Well Idle Not Required QC-GP-20 Monitoring Well Idle Not Required QC-GP-21 Monitoring Well Idle Not Required QC-GP-22 Monitoring Well Idle Not Required QC-GP-23 Monitoring Well Idle Not Required QC-GP-24 Monitoring Well Idle Not Required QC-RW-1 Remediation Well Mid-Field Semi-Annual QC-RW-2 Remediation Well Mid-Field Not Required Note: Idle designated wells are not required to be sampled as part of the RGPP A-2
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FIGUREA-2
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figure 1 MONa:ORING WELL LOCATIONS EXELON GENERATION COMPANY, LLC.
QUAD CITIES GENERATING STATION Confova, Illinois Sentinel Monitoring Point Locations, Quad Cities Nuclear Power Station, 2023
0 0
0 0 %
c::i ~o u+
0
~
0 C:
0 QC'.GP-24 QC-<;P-22 QC-<;P-23 r1 QC-Rw QC-<;P-20 QC-<;P-19 oe QC-GP-21
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+
0 50 100 Feet FIGUREA-3 Radwaste Area Well Locations, Quad Cities Nuclear Power Station, 2023 A-5
Intentionally left blank
APPENDIX B DATA TABLES
Intentionally left blank
TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM AND GROSS ALPHA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RES UL TS IN UNITS OF PC I/LITER +/- 2 SIGMA COLLECTION Gr-A Gr-A SITE DATE H-3 Sr-89 Sr-90 (Dis)
(Sus)
MW-QC-1 02/27/23
< 185
< 5.6
< 0.9 MW-QC-1 05/01/23
< 191 MW-QC-1 09/11/23
< 189 MW-QC-1 11/07/23 319 +/- 133 MW-QC-2 02/27/23
< 187 MW-QC-2 09/12/23
< 188 MW-QC-3 02/28/23 260 +/- 124
< 5.6
< 0.7 MW-QC-3 05/01/23 1070 +/- 186 MW-QC-3 09/11/23 1280 +/- 201 MW-QC-3 11/07/23 545 +/- 139 MW-QC-102D 02/28/23 276 +/- 123 MW-QC-1021 02/28/23
< 192 MW-QC-1021 09/11/23
< 190 MW-QC-102S 02/28/23
< 186 MW-QC-1031 02/28/23
< 191
< 4.5
< 0.6 MW-QC-1031 05/01/23
< 190 MW-QC-1031 09/11/23
< 190 MW-QC-1031 11/06/23
< 197 MW-QC-104S 02/28/23 26500 +/- 2710
< 4.9
< 0.6 MW-QC-104S 05/02/23
< 195 MW-QC-104S 09/11/23 1350 +/- 209 MW-QC-104S 11/06/23 1090 +/- 188 MW-QC-1051 02/28/23 433 +/- 126
< 3.8
< 0.5 MW-QC-1051 05/01/23
< 192 MW-QC-1051 09/11/23
< 192 MW-QC-1051 11/06/23
< 199 MW-QC-1061 02/28/23
< 187 MW-QC-1061 09/11/23
< 190 MW-QC-106S 02/28/23 269 +/- 128 MW-QC-106S 09/11/23
< 189 MW-QC-1071 02/27/23
< 186 MW-QC-108D 02/27/23
< 187 MW-QC-1081 02/27/23
< 182 MW-QC-1081 09/11/23
< 190 MW-QC-108S 02/27/23 757 +/- 166 MW-QC-1091 02/27/23
< 180 MW-QC-1091 09/11/23
< 189 MW-QC-109S 02/27/23
< 186 MW-QC-1121 02/27/23
< 185 MW-QC-117S 02/28/23
< 184
< 5.4
< 0.7 MW-QC-117S 05/01/23
< 194 MW-QC-117S 09/11/23
< 190 MW-QC-117S 11/06/23
< 195 MW-R-2D2 03/02/23 1110 +/- 188 MW-R-2D2 09/12/23 673 +/- 149 QC-GP-1 03/01/23 1460 +/- 218
< 3.8
< 0.9 QC-GP-1 05/01/23 486 +/- 136 QC-GP-1 09/12/23 303 +/- 144 QC-GP-1 11/06/23
< 192 QC-GP-2 03/01/23 222 +/- 128
< 4.9
< 0.7 QC-GP-2 05/01/23 1790 +/- 250 B-1
TABLE B-I.1 CONCENTRATIONS OF TRITIUM, STRONTIUM AND GROSS ALPHA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION Gr-A Gr-A SITE DATE H-3 Sr-89 Sr-90 (Dis)
(Sus)
QC-GP-2 09/12/23
< 191 QC-GP-2 11/06/23
< 194 QC-GP-4 03/01/23 2280 +/- 298
< 2.6
< 0.7 QC-GP-4 05/02/23 639 +/- 148 QC-GP-4 09/12/23 586 +/- 144 QC-GP-4 11/06/23 1080 +/- 188 QC-GP-5 03/01/23 201 +/- 126
< 7.3 5.4 +/- 0.8 QC-GP-5 05/01/23 452 +/- 143
< 3.3 3.9 +/- 0.9 QC-GP-5 09/12/23 303 +/- 130
< 3.3 6.1 +/- 1.1 QC-GP-5 11/06/23
< 196
< 8.4 16.3 +/- 1.1 QC-GP-5 11/06/23 Recount 16.1 +/- 1.6 QC-GP-5 12/05/23
< 3.1 5.4 +/- 0.3 QC-GP-9 03/01/23 849 +/- 164
< 7.8
< 0.6 QC-GP-9 05/01/23 291 +/- 133 QC-GP-9 09/12/23 667 +/- 136 QC-GP-9 11/06/23 1590 +/- 236 QC-GP-10 03/01/23
< 193
< 5.8
< 0.9 QC-GP-10 05/02/23
< 200 QC-GP-10 09/12/23
< 190 QC-GP-10 11/06/23
< 193 QC-GP-12 03/01/23 7830 +/- 845
< 5.9
< 0.9 QC-GP-12 05/02/23 472 +/- 138 QC-GP-12 09/12/23 1900 +/- 262 QC-GP-12 11/06/23 956 +/- 175 QC-GP-14 02/27/23 648 +/- 154 QC-GP-14 09/13/23
< 192 QC-GP-15 03/01/23
< 192
< 6.0
< 0.9 QC-GP-15 05/01/23
< 184 QC-GP-15 09/12/23
< 189 QC-GP-15 11/06/23
< 196 QC-GP-17 03/01/23 235 +/- 126
< 9.8
< 0.7 QC-GP-17 05/02/23
< 182 QC-GP-17 09/12/23 1020 +/- 180 QC-GP-17 11/06/23 1080 +/- 188 QC-GP-18 02/27/23 37200 +/- 3780
< 8.8
< 0.7 QC-GP-18 05/01/23 20300 +/- 2090 QC-GP-18 06/28/23 73600 +/- 7350
< 3.0
< 0.9
< 6.5
< 4.5 QC-GP-19 07/17/23 6930 +/- 757
< 8.8
< 0.9
< 9.1 20.7 +/- 12.5 QC-GP-20 07/15/23 248000 +/- 24600
< 4.0
< 1.0
< 9.9
< 9.9 QC-GP-21 07/18/23 11400 +/- 1190
< 4.0
< 0.9
< 10.1
< 10.0 QC-GP-22 07/21/23 58000 +/- 5840
< 2.6
< 0.9 36.3 +/- 23.7 36.0 +/- 19.7 QC-GP-23 07/18/23 58900 +/- 5840
< 8.1
< 1.0
< 7.6
< 10.0 QC-GP-24 11/08/23
< 194
< 9.3
< 1.0
< 6.0
< 3.5 QC-RW-1 02/27/23 16700 +/- 1740 QC-RW-1 06/28/23 340000 +/- 33800
< 7.4
< 0.9
< 5.6
< 4.0 QC-RW-1 09/13/23 21700 +/- 2220 QC-RW-2 07126123 735000 +/- 71700
< 8.6
< 0.9
< 8.1
< 9.9 WELL #7 BIG FISH 02127123
< 186 WELL#9 DRY 02/27/23
< 195 CASK STORAGE Balded values Indicate LLD was not met due to high so/Id content In the sample B-2
TABLE B-1.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 QC-GP-18 06/28/23
< 9 28 +/- 14
< 1
< 1
< 2
< 1
<2
< 1
<2
< 2
< 1
< 1
< 5
< 1 QC-GP-19 07/17/23
< 14
< 13.5
< 1
< 1
<3
< 1.56
< 3
< 2
< 3
<8
< 1
< 1
< 14
< 5 QC-GP-20 07/15/23
< 13 32 +/- 16
< 1
< 1
< 3
< 1.41
< 2
< 2
< 2
<9
< 1
< 1
< 14
< 5 QC-GP-21 07/18/23
< 15
< 15.2
<2
< 2
<4
< 1.74
< 3
< 2
< 3
< 8
< 2
< 2
< 15
< 5 QC-GP-22 07/21/23
< 16 711 +/- 32 25 +/- 2
< 2
< 5 178 +/- 3
< 5
< 2
< 3
<7
< 2
<2
< 14
< 4 QC-GP-23 07/18/23
< 15
< 27.2
< 1
< 2
< 3
< 1.64
< 3
< 2
< 3
<8
< 2
< 2
< 15
< 5 QC-GP-24 11/08/23
< 21
< 30
< 3
< 3
< 5
< 2.62
< 5
< 3
<4
<5
< 3
< 3
< 13
< 5 QC-RW-1 06/28/23
< 14
< 17
<2
<2
<4
< 2
< 3
< 2
< 3
<2
<2
< 2
< 7
< 3 QC-RW-2 07/26/23
< 15
< 15.8
<2
< 2
<4
< 1.62
< 3
< 2
< 3
<4
< 2
< 2
< 11
< 3 a,
I
(,I)
TABLE B-1.3 COLLECTION SITE DATE Am-241 QC-GP-18 02/27/23
< 0.0 QC-GP-18 06/28/23
< 0.1 QC-GP-19 07/17/23
< 0.1 QC-GP-20 07/15/23
< 0.1 QC-GP-21 07/18/23
< 0.2 QC-GP-22 07/21/23
< 0.1 QC-GP-23 07/18/23
< 0.1 QC-GP-24 11/08/23
< 0.1 QC-RW-1 06/28/23
< 0.0 QC-RW-2 07/26/23
< 0.1 CD J:.
CONCENTRATIONS OF HARD-TO-DETECTS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF QUAD CITIES NUCLEAR POWER STATION, 2023 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA Cm-242 Cm-243/244 Pu-238 Pu-239/240 U-234 U-235 U-238 Fe-55
< 0.1
< 0.1
< 0.1
< 0.1 1.72 +/- 0.51
< 0.1 1.35 +/- 0.45
< 63
< 0.1
< 0.0
< 0.1
< 0.1 1.25 +/- 0.38
< 0.1 1.47 +/- 0.42
< 49
< 0.0
< 0.0
< 0.0
< 0.1
< 0.04
< 0.1
< 0.04
< 65
< 0.0
< 0.0
< 0.1
< 0.1 1.04 +/- 0.27
< 0.0 0.61 +/- 0.21
< 136
< 0.0
< 0.0
< 0.1
< 0.1 0.91 +/- 0.43
< 0.2 0.73 +/- 0.38
< 127
< 0.1
< 0.1
< 0.2
< 0.1 8.26 +/- 2.6
< 0.2 6.40 +/- 2.2
< 110
< 0.0
< 0.1
< 0.1
< 0.1
< 0.04
< 0.1
< 0.04
< 76
< 0.0
< 0.0
< 0.2
< 0.1 2.37 +/- 0.58
< 0.1 2.04 +/- 0.53
< 161
< 0.0
< 0.0
< 0.1
< 0.1 1.00 +/- 0.44
< 0.1 0.91 +/- 0.42
< 142
< 0.0
< 0.0
< 0.0
< 0.2
< 0.07
< 0.1
< 0.12
< 56 Ni-63
< 5.0
< 4.0
< 4.3
< 4.3
< 4.5
< 4.8
< 4.4
< 4.7
< 4.2
< 4.3
TABLE B-11.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED AND ANALYZED BY QUAD CITIES STATION PERSONNEL, 2023 RESULTS IN UNITS OF PCI/LITER COLLECTION SITE DATE ACTIVITY AQUIFER QC-GP-1 03/01/23
<2,000 Sentinel Well QC-GP-1 05/01/23
<2,000 Sentinel Well QC-GP-1 06/28/23 2,830 Sentinel Well QC-GP-1 06/29/23 3,420 Sentinel Well QC-GP-1 06/30/23 2,580 Sentinel Well QC-GP-1 07/03/23 2,650 Sentinel Well QC-GP-1 07/10/23
<2,000 Sentinel Well QC-GP-1 07/17/23
<2,000 Sentinel Well QC-GP-1 07/24/23
<2,000 Sentinel Well QC-GP-1 09/12/23
<2,000 Sentinel Well QC-GP-1 11/06/23
<2,000 Sentinel Well QC-GP-2 03/01/23
<2,000 Sentinel Well QC-GP-2 05/01/23
<2,000 Sentinel Well QC-GP-2 09/12/23
<2,000 Sentinel Well QC-GP-2 11/06/23
<2,000 Sentinel Well QC-GP-4 03/01/23
<2,000 Sentinel Well QC-GP-4 05/02/23
<2,000 Sentinel Well QC-GP-4 09/12/23
<2,000 Sentinel Well QC-GP-4 11/06/23
<2,000 Sentinel Well QC-GP-5 03/01/23
<2,000 Sentinel Well QC-GP-5 05/01/23
<2,000 Sentinel Well QC-GP-5 09/12/23
<2,000 Sentinel Well QC-GP-5 11/06/23
<2,000 Sentinel Well QC-GP-9 03/01/23
<2,000 Sentinel Well QC-GP-9 05/01/23
<2,000 Sentinel Well QC-GP-9 06/28/23
<2,000 Sentinel Well QC-GP-9 09/12/23
<2,000 Sentinel Well QC-GP-9 11/06/23
<2,000 Sentinel Well QC-GP-10 03/01/23
<2,000 Sentinel Well QC-GP-10 05/02/23
<2,000 Sentinel Well QC-GP-10 09/12/23
<2,000 Sentinel Well QC-GP-10 11/06/23
<2,000 Sentinel Well QC-GP-12 03/01/23
<2,000 Sentinel Well QC-GP-12 05/02/23
<2,000 Sentinel Well QC-GP-12 09/12/23 2,030 Sentinel Well QC-GP-12 11/06/23
<2,000 Sentinel Well QC-GP-12 12/05/23
<2,000 Sentinel Well QC-GP-14 02/27/23
<2,000 Sentinel Well QC-GP-14 05/02/23
<2,000 Sentinel Well QC-GP-14 09/13/23
<2,000 Sentinel Well QC-GP-14 11/07/23
<2,000 Sentinel Well QC-GP-15 03/01/23
<2,000 Sentinel Well QC-GP-15 05/01/23
<2,000 Sentinel Well QC-GP-15 09/12/23
<2,000 Sentinel Well QC-GP-15 11/06/23
<2,000 Sentinel Well QC-GP-16 03/01/03
<2,000 Sentinel Well QC-GP-16 05/02/23
<2,000 Sentinel Well QC-GP-16 09/12/23
<2,000 Sentinel Well QC-GP-16 11/06/23
<2,000 Sentinel Well QC-GP-16 12/05/23
<2,000 Sentinel Well QC-GP-17 03/01/23
< 2000 Sentinel Well QC-GP-17 05/02/23
<2000 Sentinel Well B-5
TABLE 8-11.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED AND ANALYZED BY QUAD CITIES STATION PERSONNEL, 2023 RES UL TS IN UNITS OF PCI/LITER COLLECTION SITE DATE ACTIVITY AQUIFER QC-GP-17 09/12/23
< 2000 Sentinel Well QC-GP-17 11/06/23
< 2000 Sentinel Well QC-GP-17 12/05/23
< 2000 Sentinel Well QC-GP-18 01/19/23 28,600 Sentinel Well QC-GP-18 02/27/23 43,800 Sentinel Well QC-GP-18 03/31/23 28,700 Sentinel Well QC-GP-18 04/25/23 16,000 Sentinel Well QC-GP-18 05/01/23 24,800 Sentinel Well QC-GP-18 06/14/23 78,100 Sentinel Well QC-GP-18 06/19/23 37,500 Sentinel Well QC-GP-18 06/26/23 84,100 Sentinel Well QC-GP-18 06/27/23 81,900 Sentinel Well QC-GP-18 06/28/23 80,400 Sentinel Well QC-GP-18 06/29/23 90,200 Sentinel Well QC-GP-18 06/30/23 97,000 Sentinel Well QC-GP-18 07/01/23 107,000 Sentinel Well QC-GP-18 07/02/23 104,000 Sentinel Well QC-GP-18 07/03/23 105,000 Sentinel Well QC-GP-18 07/04/23 121,000 Sentinel Well QC-GP-18 07/05/23 124,000 Sentinel Well QC-GP-18 07/06/23 126,000 Sentinel Well QC-GP-18 07/07/23 138,000 Sentinel Well QC-GP-18 07/08/23 146,000 Sentinel Well QC-GP-18 07/09/23 155,000 Sentinel Well QC-GP-18 07/10/23 161,000 Sentinel Well QC-GP-18 07/11/23 174,000 Sentinel Well QC-GP-18 07/12/23 178,000 Sentinel Well QC-GP-18 07/13/23 139,000 Sentinel Well QC-GP-18 07/14/23 169,000 Sentinel Well QC-GP-18 07/15/23 181,000 Sentinel Well QC-GP-18 07/16/23 181,000 Sentinel Well QC-GP-18 07/17/23 182,000 Sentinel Well QC-GP-18 07/18/23 192,000 Sentinel Well QC-GP-18 07/21/23 183,000 Sentinel Well QC-GP-18 07/24/23 202,000 Sentinel Well QC-GP-18 07/27/23 221,000 Sentinel Well QC-GP-18 07/31/23 4,760 Sentinel Well QC-GP-18 08/24/23 90,600 Sentinel Well QC-RW-1 01/19/23 11,200 Remediation Well QC-RW-1 02/27/23 15,700 Remediation Well QC-RW-1 03/31/23 13,500 Remediation Well QC-RW-1 04/25/23 14,900 Remediation Well QC-RW-1 05/01/23 13,800 Remediation Well QC-RW-1 06/14/23 7,510 Remediation Well QC-RW-1 06/19/23 11,200 Remediation Well QC-RW-1 06/26/23 319,000 Remediation Well QC-RW-1 06/26/23 323,000 Remediation Well QC-RW-1 06/27/23 361,000 Remediation Well QC-RW-1 06/28/23 401,000 Remediation Well QC-RW-1 06/29/23 423,000 Remediation Well QC-RW-1 06/30/23 453,000 Remediation Well QC-RW-1 07/01/23 473,000 Remediation Well B-6
TABLE B-11.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED AND ANALYZED BY QUAD CITIES STATION PERSONNEL, 2023 RESULTS IN UNITS OF PCI/LITER COLLECTION SITE DATE ACTIVITY AQUIFER QC-RW-1 07/02/23 457,000 Remediation Well QC-RW-1 07/03/23 470,000 Remediation Well QC-RW-1 07/04/23 475,000 Remediation Well QC-RW-1 07/05/23 465,000 Remediation Well QC-RW-1 07/06/23 482,000 Remediation Well QC-RW-1 07/07/23 461,000 Remediation Well QC-RW-1 07/08/23 470,000 Remediation Well QC-RW-1 07/09/23 482,000 Remediation Well QC-RW-1 07/10/23 473,000 Remediation Well QC-RW-1 07/11/23 469,000 Remediation Well QC-RW-1 07/12/23 538,000 Remediation Well QC-RW-1 07/13/23 499,000 Remediation Well QC-RW-1 07/14/23 480,000 Remediation Well QC-RW-1 07/15/23 466,000 Remediation Well QC-RW-1 07/16/23 443,000 Remediation Well QC-RW-1 07/17/23 434,000 Remediation Well QC-RW-1 07/18/23 445,000 Remediation Well QC-RW-1 07/21/23 595,000 Remediation Well QC-RW-1 07/24/23 437,000 Remediation Well QC-RW-1 07/27/23 386,000 Remediation Well QC-RW-1 07/31/23 16,800 Remediation Well QC-RW-1 08/03/23 26,500 Remediation Well QC-RW-1 08/05/23 32,000 Remediation Well QC-RW-1 08/07/23 33,500 Remediation Well QC-RW-1 08/10/23 41,900 Remediation Well QC-RW-1 08/16/23 34,200 Remediation Well QC-RW-1 08/21/23 30,600 Remediation Well QC-RW-1 08/24/23 24,500 Remediation Well QC-RW-1 08/28/23 35,200 Remediation Well QC-RW-1 08/31/23 38,800 Remediation Well QC-RW-1 09/05/23 37,200 Remediation Well QC-RW-1 09/07/23 36,700 Remediation Well QC-RW-1 09/13/23 26,800 Remediation Well QC-RW-1 09/18/23 25,200 Remediation Well QC-RW-1 09/25/23 21,100 Remediation Well QC-RW-1 10/04/23 22,200 Remediation Well QC-RW-1 10/09/23 20,300 Remediation Well QC-RW-1 10/16/23 15,500 Remediation Well QC-RW-1 10/23/23 13,200 Remediation Well QC-RW-1 10/30/23 13,300 Remediation Well QC-RW-1 11/07/23 10,400 Remediation Well QC-RW-1 12/05/23 8,530 Remediation Well Well#?
02/27/23
<2,000 Production Well Well#9 02/27/23
<200 Production Well Well#1 02/14/23
<200 Production Well Well#1 07/07/23
<2,000 Production Well Well#1 09/07/23
<200 Production Well Well#5 02/14/23
<200 Production Well Well#10 03/01/23
<200 Production Well Well#10 09/14/23
<200 Production Well B-7
TABLE B-11.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED AND ANALYZED BY QUAD CITIES STATION PERSONNEL, 2023 RESULTS IN UNITS OF PCI/LITER COLLECTION SITE DATE ACTIVITY AQUIFER MW-R-2D2 01/03/23
<2,000 Remediation Well MW-R-2D2 01/17/23
<2,000 Remediation Well MW-R-2D2 03/02/23
<2,000 Remediation Well MW-R-2D2 03/07/23
<2,000 Remediation Well MW-R-2D2 03/13/23
<2,000 Remediation Well MW-R-2D2 03/27/23
<2,000 Remediation Well MW-R-2D2 04/10/23
<2,000 Remediation Well MW-R-2D2 04/24/23
<2,000 Remediation Well MW-R-2D2 05/02/23
<2,000 Remediation Well MW-R-2D2 05/08/23
<2,000 Remediation Well MW-R-2D2 05/22/23
<2,000 Remediation Well MW-R-2D2 06/05/23
<2,000 Remediation Well MW-R-2D2 06/19/23
<2,000 Remediation Well MW-R-2D2 07/03/23
<2,000 Remediation Well MW-R-2D2 07/17/23
<2,000 Remediation Well MW-R-2D2 07/31/23
<2,000 Remediation Well MW-R-2D2 08/16/23
<2,000 Remediation Well MW-R-2D2 08/28/23
<2,000 Remediation Well MW-R-2D2 09/11/23
<2,000 Remediation Well MW-R-2D2 09/12/23
<2,000 Remediation Well MW-R-2D2 09/25/23
<2,000 Remediation Well MW-R-202 10/09/23
<2,000 Remediation Well MW-R-2D2 10/25/23
<2,000 Remediation Well MW-R-2D2 11/06/23
<2,000 Remediation Well MW-R-2D2 12/05/23 2,170 Remediation Well MW-QC-103I 05/01/23
<2,000 Monitoring Well MW-QC-103I 06/28/23
<2,000 Monitoring Well MW-QC-103I 06/29/23
<2,000 Monitoring Well MW-QC-103I 06/30/23
<2,000 Monitoring Well MW-QC-103I 07/03/23
<2,000 Monitoring Well MW-QC-103I 07/10/23
<2,000 Monitoring Well MW-QC-103I 07/17/23
<2,000 Monitoring Well MW-QC-103I 07/24/23
<2,000 Monitoring Well MW-QC-103I 08/07/23
<2,000 Monitoring Well MW-QC-103I 11/06/23
<2,000 Monitoring Well MW-QC-104S 05/02/23
<2,000 Monitoring Well MW-QC-104S 11/06/23
<2,000 Monitoring Well MW-QC-104S 12/05/23 5,030 Monitoring Well MW-QC-105I 05/01/23
<2,000 Monitoring Well MW-QC-105I 11/06/23
<2,000 Monitoring Well MW-QC-1 05/01/23
<2,000 Monitoring Well MW-QC-1 11/07/23
<2,000 Monitoring Well MW-QC-3 05/01/23
< 2000 Monitoring Well MW-QC-3 06/28/23 2,280 Monitoring Well MW-QC-3 06/29/23
<2,000 Monitoring Well MW-QC-3 06/30/23
<2,000 Monitoring Well MW-QC-3 07/03/23 2,180 Monitoring Well MW-QC-3 07/10/23 3,980 Monitoring Well MW-QC-3 07/15/23 7,800 Monitoring Well B-8
TABLE B-11.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED AND ANALYZED BY QUAD CITIES STATION PERSONNEL, 2023 RESULTS IN UNITS OF PCI/LITER COLLECTION SITE DATE ACTIVITY AQUIFER MW-QC-3 07/17/23 10,200 Monitoring Well MW-QC-3 07/18/23 10,700 Monitoring Well MW-QC-3 07/21/23 8,770 Monitoring Well MW-QC-3 07/24/23 9,400 Monitoring Well MW-QC-3 08/03/23 8,460 Monitoring Well MW-QC-3 08/05/23 8,820 Monitoring Well MW-QC-3 08/07/23 7,870 Monitoring Well MW-QC-3 08/16/23 4,280 Monitoring Well MW-QC-3 08/21/23 3,400 Monitoring Well MW-QC-3 08/24/23 4,100 Monitoring Well MW-QC-3 08/28/23 2,750 Monitoring Well MW-QC-3 08/31/23 2,450 Monitoring Well MW-QC-3 09/05/23
<2,000 Monitoring Well MW-QC-3 09/07/23 2,290 Monitoring Well MW-QC-3 09/18/23
<2,000 Monitoring Well MW-QC-3 09/25/23
<2,000 Monitoring Well MW-QC-3 10/04/23
<2,000 Monitoring Well MW-QC-3 10/09/23
<2,000 Monitoring Well MW-QC-3 10/16/23 2,130 Monitoring Well MW-QC-3 10/23/23
<2,000 Monitoring Well MW-QC-3 10/30/23
<2,000 Monitoring Well MW-QC-3 11/07/23
<2,000 Monitoring Well MW-QC-3 12/05/23
<2,000 Monitoring Well MW-QC-117S 05/01/23
<2,000 Monitoring Well MW-QC-117S 11/06/23
<2,000 Monitoring Well QC-GP-19 07/14/23 8,100 Sentinel Well QC-GP-19 07/15/23 7,230 Sentinel Well QC-GP-19 07/16/23 7,570 Sentinel Well QC-GP-19 07/17/23 7,720 Sentinel Well QC-GP-19 07/21/23 7,910 Sentinel Well QC-GP-19 07/24/23 7,770 Sentinel Well QC-GP-19 07/27/23 8,490 Sentinel Well QC-GP-19 07/31/23 8,490 Sentinel Well QC-GP-19 08/03/23 7,000 Sentinel Well QC-GP-19 08/05/23 7,050 Sentinel Well QC-GP-19 08/07/23 7,970 Sentinel Well QC-GP-19 08/10/23 7,280 Sentinel Well QC-GP-19 08/16/23 6,920 Sentinel Well QC-GP-19 08/21/23 6,480 Sentinel Well QC-GP-19 08/24/23 5,180 Sentinel Well QC-GP-19 08/28/23 5,150 Sentinel Well QC-GP-19 08/31/23 4,810 Sentinel Well QC-GP-19 09/05/23 3,300 Sentinel Well QC-GP-19 09/07/23 4,660 Sentinel Well QC-GP-19 09/13/23 4,890 Sentinel Well QC-GP-19 09/18/23 4,530 Sentinel Well QC-GP-19 09/25/23 3,900 Sentinel Well QC-GP-19 10/04/23 3,860 Sentinel Well QC-GP-19 10/09/23 3,780 Sentinel Well B-9
TABLE B-11.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED AND ANALYZED BY QUAD CITIES STATION PERSONNEL, 2023 RESULTS IN UNITS OF PCI/LITER COLLECTION SITE DATE ACTIVITY AQUIFER QC-GP-19 10/16/23 4,390 Sentinel Well QC-GP-19 10/23/23 3,430 Sentinel Well QC-GP-19 10/30/23 3,300 Sentinel Well QC-GP-19 11/07/23 2,970 Sentinel Well QC-GP-19 12/05/23 2,960 Sentinel Well QC-GP-20 07/13/23 241,000 Sentinel Well QC-GP-20 07/14/23 253,000 Sentinel Well QC-GP-20 07/15/23 265,000 Sentinel Well QC-GP-20 07/17/23 294,000 Sentinel Well QC-GP-20 07/21/23 268,000 Sentinel Well QC-GP-20 07/24/23 253,000 Sentinel Well QC-GP-20 07/27/23 221,000 Sentinel Well QC-GP-20 07/31/23 33,800 Sentinel Well QC-GP-20 08/03/23 50,700 Sentinel Well QC-GP-20 08/05/23 54,000 Sentinel Well QC-GP-20 08/07/23 47,400 Sentinel Well QC-GP-20 08/10/23 26,200 Sentinel Well QC-GP-20 08/16/23 18,800 Sentinel Well QC-GP-20 08/21/23 15,400 Sentinel Well QC-GP-20 08/24/23 41,600 Sentinel Well QC-GP-20 08/28/23 23,300 Sentinel Well QC-GP-20 08/31/23 21,900 Sentinel Well QC-GP-20 09/05/23 24,400 Sentinel Well QC-GP-20 09/07/23 25,000 Sentinel Well QC-GP-20 09/13/23 27,700 Sentinel Well QC-GP-20 09/18/23 28,400 Sentinel Well QC-GP-20 09/25/23 22,000 Sentinel Well QC-GP-20 10/04/23 26,400 Sentinel Well QC-GP-20 10/09/23 19,200 Sentinel Well QC-GP-20 10/16/23 7,950 Sentinel Well QC-GP-20 10/23/23 7,410 Sentinel Well QC-GP-20 10/30/23 4,770 Sentinel Well QC-GP-20 11/07/23 9,810 Sentinel Well QC-GP-20 12/05/23 7,190 Sentinel Well QC-GP-21 07/16/23 11,500 Sentinel Well QC-GP-21 07/17/23 11,600 Sentinel Well QC-GP-21 07/18/23 14,500 Sentinel Well QC-GP-21 07/21/23 11,900 Sentinel Well QC-GP-21 07/24/23 11,200 Sentinel Well QC-GP-21 07/27/23 10,900 Sentinel Well QC-GP-21 07/31/23 7,990 Sentinel Well QC-GP-21 08/03/23 37,900 Sentinel Well QC-GP-21 08/05/23 52,900 Sentinel Well QC-GP-21 08/07/23 44,900 Sentinel Well QC-GP-21 08/10/23 42,000 Sentinel Well QC-GP-21 08/16/23 36,100 Sentinel Well QC-GP-21 08/21/23 46,500 Sentinel Well QC-GP-21 08/24/23 33,000 Sentinel Well QC-GP-21 08/28/23 60,700 Sentinel Well B-10
TABLE B-11.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED AND ANALYZED BY QUAD CITIES STATION PERSONNEL, 2023 RESULTS IN UNITS OF PCI/LITER COLLECTION SITE DATE ACTIVITY AQUIFER QC-GP-21 08/31/23 46,400 Sentinel Well QC-GP-21 09/05/23 37,300 Sentinel Well QC-GP-21 09/07/23 39,200 Sentinel Well QC-GP-21 09/13/23 32,400 Sentinel Well QC-GP-21 09/18/23 21,900 Sentinel Well QC-GP-21 09/25/23 17,500 Sentinel Well QC-GP-21 10/04/23 18,300 Sentinel Well QC-GP-21 10/09/23 19,500 Sentinel Well QC-GP-21 10/16/23 13,800 Sentinel Well QC-GP-21 10/23/23 9,790 Sentinel Well QC-GP-21 10/30/23 7,180 Sentinel Well QC-GP-21 11/07/23 6,750 Sentinel Well QC-GP-21 12/05/23 4,200 Sentinel Well QC-GP-22 07/19/23 59,300 Sentinel Well QC-GP-22 07/21/23 66,700 Sentinel Well QC-GP-22 07/24/23 54,300 Sentinel Well QC-GP-22 07/27/23 39,300 Sentinel Well QC-GP-22 07/31/23 27,100 Sentinel Well QC-GP-22 08/03/23 23,900 Sentinel Well QC-GP-22 08/05/23 21,500 Sentinel Well QC-GP-22 08/07/23 22,500 Sentinel Well QC-GP-22 08/10/23 18,100 Sentinel Well QC-GP-22 08/16/23 13,000 Sentinel Well QC-GP-22 08/21/23 8,870 Sentinel Well QC-GP-22 08/24/23 9,280 Sentinel Well QC-GP-22 08/28/23 4,850 Sentinel Well QC-GP-22 08/31/23 4,210 Sentinel Well QC-GP-22 09/05/23 2,080 Sentinel Well QC-GP-22 09/07/23 2,790 Sentinel Well QC-GP-22 09/13/23
< 2000 Sentinel Well QC-GP-22 09/18/23
<2000 Sentinel Well QC-GP-22 09/25/23
< 2000 Sentinel Well QC-GP-22 10/04/23
< 2000 Sentinel Well QC-GP-22 10/09/23
< 2000 Sentinel Well QC-GP-22 10/16/23
< 2000 Sentinel Well QC-GP-22 10/23/23
< 2000 Sentinel Well QC-GP-22 10/30/23
< 2000 Sentinel Well QC-GP-22 11/07/23
<2000 Sentinel Well QC-GP-22 12/05/23
< 2000 Sentinel Well QC-GP-23 07/16/23 176,000 Sentinel Well QC-GP-23 07/17/23 73,700 Sentinel Well QC-GP-23 07/18/23 68,100 Sentinel Well QC-GP-23 07/21/23 84,400 Sentinel Well QC-GP-23 07/24/23 122,000 Sentinel Well QC-GP-23 07/27/23 85,200 Sentinel Well QC-GP-23 09/25/23 14,400 Sentinel Well QC-GP-23 10/04/23 10,300 Sentinel Well QC-GP-23 10/09/23 8,640 Sentinel Well QC-GP-23 10/16/23 8,780 Sentinel Well 8-11
TABLE 8-11.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED AND ANALYZED BY QUAD CITIES STATION PERSONNEL, 2023 RESULTS IN UNITS OF PC I/LITER COLLECTION SITE DATE ACTIVITY AQUIFER QC-GP-23 10/23/23 8,510 Sentinel Well QC-GP-23 10/30/23 6,900 Sentinel Well QC-GP-23 11/07/23 5,680 Sentinel Well QC-GP-23 12/05/23 8,010 Sentinel Well QC-GP-24 11/02/23
< 2000 Sentinel Well QC-GP-24 11/07/23
< 2000 Sentinel Well QC-GP-24 11/08/23
< 2000 Sentinel Well QC-GP-24 12/05/23
< 2000 Sentinel Well QC-RW-2 07/25/23 851,000 Remediation Well QC-RW-2 07/26/23 792,000 Remediation Well QC-RW-2 07/27/23 472,000 Remediation Well QC-RW-2 07/28/23 311,000 Remediation Well QC-RW-2 07/29/23 229,000 Remediation Well QC-RW-2 07/30/23 183,000 Remediation Well QC-RW-2 07/31/23 144,000 Remediation Well QC-RW-2 08/01/23 112,000 Remediation Well QC-RW-2 08/03/23 85,200 Remediation Well QC-RW-2 08/04/23 78,400 Remediation Well QC-RW-2 08/05/23 73,600 Remediation Well QC-RW-2 08/06/23 70,000 Remediation Well QC-RW-2 08/07/23 70,000 Remediation Well QC-RW-2 08/08/23 63,200 Remediation Well QC-RW-2 08/09/23 66,200 Remediation Well QC-RW-2 08/10/23 62,800 Remediation Well QC-RW-2 08/11/23 63,600 Remediation Well QC-RW-2 08/12/23 63,800 Remediation Well QC-RW-2 08/13/23 62,900 Remediation Well QC-RW-2 08/15/23 55,500 Remediation Well QC-RW-2 08/16/23 55,400 Remediation Well QC-RW-2 08/17/23 54,300 Remediation Well QC-RW-2 08/18/23 55,900 Remediation Well QC-RW-2 08/19/23 53,100 Remediation Well QC-RW-2 08/20/23 54,700 Remediation Well QC-RW-2 08/21/23 54,500 Remediation Well QC-RW-2 08/22/23 56,800 Remediation Well QC-RW-2 08/24/23 23,600 Remediation Well QC-RW-2 08/25/23 56,400 Remediation Well QC-RW-2 08/26/23 54,000 Remediation Well QC-RW-2 08/27/23 51,600 Remediation Well QC-RW-2 08/28/23 48,900 Remediation Well QC-RW-2 08/29/23 45,000 Remediation Well QC-RW-2 08/30/23 41,900 Remediation Well QC-RW-2 08/31/23 42,200 Remediation Well QC-RW-2 09/01/23 40,400 Remediation Well QC-RW-2 09/02/23 40,300 Remediation Well QC-RW-2 09/03/23 37,300 Remediation Well QC-RW-2 09/04/23 37,800 Remediation Well QC-RW-2 09/05/23 37,700 Remediation Well QC-RW-2 09/06/23 36,400 Remediation Well B-12
TABLE B-11.1 CONCENTRATIONS OF TRITIUM IN GROUNDWATER SAMPLES COLLECTED AND ANALYZED BY QUAD CITIES STATION PERSONNEL, 2023 RESULTS IN UNITS OF PCI/LITER COLLECTION SITE DATE ACTIVITY AQUIFER QC-RW-2 09/07/23 39,300 Remediation Well QC-RW-2 09/08/23 34,900 Remediation Well QC-RW-2 09/11/23 36,000 Remediation Well QC-RW-2 09/13/23 33,100 Remediation Well QC-RW-2 09/15/23 34,400 Remediation Well QC-RW-2 09/18/23 35,800 Remediation Well QC-RW-2 09/20/23 39,300 Remediation Well QC-RW-2 09/22/23 46,500 Remediation Well QC-RW-2 09/25/23 36,100 Remediation Well QC-RW-2 09/27/23 35,900 Remediation Well QC-RW-2 09/29/23 35,600 Remediation Well QC-RW-2 10/02/23 26,200 Remediation Well QC-RW-2 10/04/23 26,600 Remediation Well QC-RW-2 10/06/23 24,600 Remediation Well QC-RW-2 10/09/23 23,700 Remediation Well QC-RW-2 10/11/23 24,300 Remediation Well QC-RW-2 10/13/23 24,400 Remediation Well QC-RW-2 10/16/23 24,500 Remediation Well QC-RW-2 10/18/23 22,200 Remediation Well QC-RW-2 10/20/23 21,100 Remediation Well QC-RW-2 10/23/23 21,100 Remediation Well QC-RW-2 10/25/23 20,800 Remediation Well QC-RW-2 10/27/23 19,800 Remediation Well QC-RW-2 10/30/23 19,900 Remediation Well QC-RW-2 11/01/23 18,000 Remediation Well QC-RW-2 11/03/23 19,800 Remediation Well QC-RW-2 11/06/23 21,100 Remediation Well QC-RW-2 11/08/23 19,300 Remediation Well QC-RW-2 11/10/23 19,300 Remediation Well QC-RW-2 11/13/23 17,400 Remediation Well QC-RW-2 11/15/23 16,500 Remediation Well QC-RW-2 11/17/23 17,300 Remediation Well QC-RW-2 11/20/23 13,700 Remediation Well QC-RW-2 11/22/23 15,500 Remediation Well QC-RW-2 11/24/23 15,600 Remediation Well QC-RW-2 11/27/23 13,600 Remediation Well QC-RW-2 11/29/23 15,100 Remediation Well QC-RW-2 12/01/23 13,700 Remediation Well QC-RW-2 12/04/23 13,600 Remediation Well QC-RW-2 12/05/23 12,400 Remediation Well QC-RW-2 12/08/23 12,400 Remediation Well QC-RW-2 12/11/23 12,000 Remediation Well QC-RW-2 12/13/23 11,400 Remediation Well QC-RW-2 12/15/23 11,300 Remediation Well QC-RW-2 12/18/23 11,300 Remediation Well QC-RW-2 12/20/23 11,700 Remediation Well QC-RW-2 12/22/23 11,200 Remediation Well QC-RW-2 12/27/23 10,700 Remediation Well QC-RW-2 12/29/23 11,000 Remediation Well B-13
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SVP-24-034, Annual Radiological Environmental Operating Report

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SVP-24-034, Annual Radiological Environmental Operating Report

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