Text

Restoration Project - Final Status Survey Release Record Unit 2 Pwst/Sst Area Survey Unit 12103 - Rev. 1
	ML22279A988
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Site:	Zion File:ZionSolutions icon.png
Issue date:	09/23/2022
From:	Graham J; ZionSolutions
To:	; Office of Nuclear Material Safety and Safeguards
Shared Package
ML22279A984	List: ML22279A985; ML22279A986; ML22279A987; ML22279A988; ML22279A989; ML22279A990; ML22279A991; ML22279A993;
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	ZS-2022-043
	Download: ML22279A988 (154)
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ZION STATION RESTORATION PROJECT FINAL STATUS SURVEY RELEASE RECORD UNIT 2 PWST/SST AREA SURVEY UNIT 12103 REVISION 1

FSS RELEASE RECORD - REV. 1 ~

UNIT 2 PWST/SST AREA =ZIO. SOLUTIONS,-:u= ME-,,y~C,on,pany SURVEY UNIT 12103 PREPARED BY / DATE: Jeff Graham Y ett e r Digitally signed by Robert F Yetter Ill DN: C=US, ~.~EnergySoluti~ns, CN=Robert F Yetter Ill, E=rfyettenu@energysolutions.com Reason: I have reviewed this document Location: your signing location here REVIEWED BY/ DATE: Robert Yetter ill 111 Date: 2022-09-26 08:17:28 Foxit PhantomPDF Version: 9.7.0 LT/FSS QA/Documentation Specialist Digitally signed by Robert F_ Yetter Robert F Y ett e r ON: C=US, OU=EnergySolutions, CN=Robert F_ Yetter, E=rfyetter@energysolutions.com Rea~n: I am th~ a_ u thor of ~ is document Location: your s19ning location here Date: 2022--09-27 08:35:30 APPROVED BY / DATE: Robert Yetter Foxit PhantomPDF Version: 9.7.0 C/L T Manager

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 TABLE OF CONTENTS

1. EXECUTIVE

SUMMARY

................................................................................................... 7

2. SURVEY UNIT DESCRIPTION ......................................................................................... 7

3. CLASSIFICATION BASIS .................................................................................................. 8

4. DATA QUALITY OBJECTIVES (DQO) ........................................................................... 9

5. SURVEY DESIGN .............................................................................................................. 13

6. SURVEY IMPLEMENTATION........................................................................................ 20

7. SURVEY RESULTS............................................................................................................ 21

8. QUALITY CONTROL ....................................................................................................... 28

9. INVESTIGATIONS AND RESULTS ............................................................................... 28

10. REMEDIATION AND RESULTS ..................................................................................... 29

11. CHANGES FROM THE SURVEY PLAN ....................................................................... 30

12. DATA QUALITY ASSESSMENT (DQA) ........................................................................ 30

13. ANOMALIES....................................................................................................................... 30

14. CONCLUSION .................................................................................................................... 30

15. REFERENCES .................................................................................................................... 31

16. ATTACHMENTS ................................................................................................................ 32 ATTACHMENT 1 - FIGURE AND MAPS .......................................................................... 33 ATTACHMENT 2 - SCAN DATA ....................................................................................... 37 ATTACHMENT 3 - CONSULTATION TRIGGERS FOR RESIDENTIAL AND COMMERCIAL/INDUSTRIAL SOIL CONTAMINATION ............. 43 ATTACHMENT 4 - SIGN TEST .......................................................................................... 45 ATTACHMENT 5 - QC SAMPLE ASSESSMENT.............................................................. 47 ATTACHMENT 6 - GRAPHICAL PRESENTATIONS ...................................................... 49 ATTACHMENT 7 - GEL LABS CERTIFICATE OF ANALYSIS REPORTS .................... 56

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 LIST OF TABLES Table 1 - Dose Significant Radionuclides and Mixture.......................................................................... 10 Table 2 - Base Case DCGLs for Surface Soils (BcDCGLSS) ................................................................ 11 Table 3 - Base Case DCGLs for Subsurface Soils (BcDCGLSB) .......................................................... 11 Table 4 - Operational DCGLs for Surface Soils (OpDCGLSS) ............................................................. 12 Table 5 - Operational DCGLs for Subsurface Soils (OpDCGLSB) ....................................................... 12 Table 6 - Surrogate Ratios ...................................................................................................................... 13 Table 7 - Investigation Levels ................................................................................................................ 15 Table 8 - Systematic Sample Measurement Locations ........................................................................... 17 Table 9 - Synopsis of Survey Design ..................................................................................................... 19 Table 10 - Instruments and Detectors ..................................................................................................... 21 Table 11 - Synopsis of Scan Results....................................................................................................... 21 Table 12 - Summary of Gamma Spectroscopy Results for Surface Soil Samples Comprising the Statistical Sample Population ................................................................................................................. 24 Table 13 - Summary of Gamma Spectroscopy Results for Subsurface Soil Samples............................ 24 Table 14 - Surrogate Ratio Analysis Results ......................................................................................... 25 Table 15 - Summary of Gamma Spectroscopy Results for QC Soil Samples ........................................ 26 Table 16 - Sum-of-Fractions for Individual Surface Soil Samples, when compared to the OpDCGLs (Systematic) ............................................................................................................................................ 27 Table 17 - Sum-of-Fractions for Individual Subsurface Soil Samples, when compared to the OpDCGLs

................................................................................................................................................................ 27 Table 18 - Sum-of-Fractions for Individual QC Soil Samples, when compared to the OpDCGLs ....... 27 Table 19 - Basic Statistical Properties of Systematic Sample Population .............................................. 28 Table 20- Summary of Gamma Spectroscopy Results for Investigation Surface and Subsurface Soil Samples ................................................................................................................................................... 29 Table 21 - Sum-of-Fractions for Investigation Surface and Subsurface Soil Samples, when compared to the OpDCGLs ..................................................................................................................................... 29 LIST OF FIGURES Figure 1 - Class 1 and Class 2 Open Land Survey Units from Figure 2-7 of the LTP ............................ 8

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 LIST OF ACRONYMS AND ABBREVIATIONS ALARA As Low As Reasonably Achievable AMCG Average Member of the Critical Group BcDCGL Base Case Soil DCGLs C/LT Characterization/License Termination CoC Chain-of-Custody cpm Counts per minute DCGL Derived Concentration Guideline Level DQA Data Quality Assessment DQO Data Quality Objective DRP Discrete Radioactive Particle EMC Elevated Measurement Comparison FOV Field of View FSS Final Status Survey GPS Global Positioning System HTD Hard to Detect HSA Historical Site Assessment IC Insignificant Dose Contributor ISOCS In Situ Object Counting System LBGR Lower Bound of the Gray Region LTP License Termination Plan MARSSIM Multi-Agency Radiation Survey and Site Investigation Manual MDC Minimum Detectable Concentration MDCR Minimum Detectable Count Rate NAD North American Datum NaI Sodium Iodide OpDCGL Operational Derived Concentration Guideline Level OpSOF Operational Sum-of-Fraction QAPP Quality Assurance Project Plan (for Characterization and FSS)

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 QC Quality Control RE Radiological Engineer ROC Radionuclides of Concern SOF Sum-of-Fraction TEDE Total Effective Dose Equivalent TSD Technical Support Documents UBGR Upper Bound of the Gray Region VSP Visual Sample Plan ZNPS Zion Nuclear Power Station ZSRP Zion Station Restoration Project

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103

1. EXECUTIVE

SUMMARY

Final Status Survey (FSS) was performed on this survey unit in February of 2019. In November 2021, a concrete foundation structure was found in the survey unit that did not meet the requirement that all remaining structures were to be below 588 grade. Excavations were performed to remove this concrete. Because the geologic features of the survey unit significantly changed during the excavation, the FSS was reperformed following the completion of this work.

This release record addresses the results of the reperformance of FSS.

This FSS Release Record for Survey Unit 12103, Unit 2 PWST/SST Area, has been generated for the Zion Station Restoration Project (ZSRP) in accordance with ZionSolutions procedure ZS-LT-300-001-005, Final Status Survey Data Reporting (Reference 1) and satisfies the requirements of Section 5.11 of the Zion Station Restoration Project License Termination Plan (LTP) (Reference 2).

An FSS package (L1-12103A-F Plan #3) was developed in accordance with ZionSolutions procedure ZS-LT-300-001-001, Final Status Survey Package Development (Reference 3), the ZSRP LTP, and guidance from NUREG-1575, Revision 1, Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) (Reference 4).

This open land survey unit has a MARSSIM classification of 1. The survey plan was designed based upon use of the Sign Test as the nonparametric statistical test for compliance. Both the Type I () and Type II () decision error rates were set at 0.05. Seventeen (17) systematic surface soil samples were acquired from the survey unit. In addition, surface scanning was performed on 100% of the total surface area in the survey unit. Numerous latch value readings were recorded in areas with elevated activity identified during the scans. Investigations were performed into the elevated readings. A detailed description of the investigations is included in Section 9. Investigation soil samples taken showed positive activity for Cs-137, with the highest Operational SOF (OpSOF) of 0.077. The analytical results for the systematic soil samples taken in Survey Unit 12103 indicate that the Sum-of-Fraction (SOF) for each sample, when compared to the Operational Derived Concentration Guideline Levels (OpDCGL), was less than 1.0, with a maximum Operational SOF (OpSOF) of 0.058. The mean OpSOF for the systematic samples was 0.026. The mean SOF (BcSOF), when the analytical results were compared to the Base Case DCGLs (BcDCGL), was 0.007, which results in a dose assigned to the survey unit of 0.167 mrem/yr. Therefore, the null hypothesis is rejected and survey unit 12103 is acceptable for unrestricted release.

2. SURVEY UNIT DESCRIPTION Survey Unit 12103, the Unit 2 PWST/SST Area, is a Class 1 open land survey unit. It is bounded on the west by survey unit 12205A and 12201E, the south by 12204A, the east by 10223, and the north by 12102.

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 The boundary of the survey unit was defined using a Global Positioning System (GPS) based on the Illinois State Plane System North American Datum (NAD) 1983 East. The reference coordinates associated with the sample locations in this survey unit are presented in Table 8.

3. CLASSIFICATION BASIS Survey unit 12103 was classified in accordance with ZionSolutions procedure ZS-LT-300-001-002, Survey Unit Classification (Reference 5).

The area encompassing this survey unit was described in the Historical Site Assessment (HSA) as the U2 PWST/SST Area and is located within Survey Unit 10112 as identified in Figure 3 of the HSA. Subsequently, in the Zion Station Restoration Project License Termination Plan (LTP), the area of 10112 and 10101 that was inside the Security Area fence line was split into 3 survey units, 12101, 12102, and 12103. The 12103 unit was described as the Unit 2 PWST/SST Area in Table 2-4 of the LTP. The location of these survey units are represented in Figure 2-7 of the LTP.

Figure 1 - Class 1 and Class 2 Open Land Survey Units from Figure 2-7 of the LTP The initial Final Status Survey of 12103 was completed in February 2019 as a Class 1 survey unit. This classification remains applicable to this survey design.

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 A Radiological Engineer (RE)/Characterization/Licenses Termination (C/LT) Supervisor performed a visual inspection and walk-down of the survey unit on 06/16/2022 prior to performing this FSS. The purpose of the walk-down was to assess the physical condition of the survey unit, evaluate access points and travel paths and identify potentially hazardous conditions.

A final classification assessment was performed in accordance with procedure ZS-LT-300-001-002, Survey Unit Classification as part of the survey design for FSS. The assessment confirmed that Survey Unit 12112 was correctly classified as Class 1.

4. DATA QUALITY OBJECTIVES (DQO)

FSS planning and design hinges on coherence with the Data Quality Objective (DQO) process to ensure, through compliance with explicitly defined inputs and boundaries, that the primary objective of the survey is satisfied. The DQO process is described in the LTP in accordance with MARSSIM. The appropriate design for a given survey is developed using the DQO process as outlined in Appendix D of MARSSIM.

The DQO process incorporated hypothesis testing and probabilistic sampling distributions to control decision errors during data analysis. Hypothesis testing is a process based on the scientific method that compares a baseline condition to an alternate condition. The baseline condition is technically known as the null hypothesis. Hypothesis testing rests on the premise that the null hypothesis is true, and that sufficient evidence must be provided for rejection. In designing the survey plan, the underlying assumption, or null hypothesis was that residual activity in the survey unit exceeded the release criteria. Rejection of the null hypothesis would indicate that residual activity within the survey unit does not exceed the release criteria.

Therefore, the survey unit would satisfy the primary objective of the FSS sample plan.

The primary objective of the FSS sample plan is to demonstrate that the level of residual radioactivity in Survey Unit 12103 does not exceed the release criteria specified in the LTP and that the potential dose from residual radioactivity is As Low As Reasonably Achievable (ALARA).

ZionSolutions Technical Support Document (TSD)11-001, Potential Radionuclides of Concern during the Decommissioning of Zion Station (Reference 7), written in 2012, established the basis for an initial suite of potential ROC for the decommissioning of the Zion Nuclear Power Station (ZNPS).

ZionSolutions TSD 14-019, Radionuclides of Concern for Soil and Basement Fill Model Source Terms (Reference 8), completed in February 2017, was written to refine the initial selection of ROC for decommissioning at ZSRP. The list of ROC was evaluated using Containment Building(s) and Auxiliary Building concrete core analysis data to evaluate the dose significance of each radionuclide in the end state model. Section 4.4 of the TSD evaluated the results of the characterization data of surveys taken of soils. The following conclusion was reached: The results of surface and subsurface soil characterization in the impacted area surrounding Zion

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 indicate that there is minimal residual radioactivity in soil. Essentially all of the soil results were reported as non-detectable. Other than Cs-137 at very low levels, and Co-60 at a concentration of 0.24 pCi/g in one sample, the results for all radionuclides were less than MDC. Therefore, the direct determination of radionuclide mixture fractions for initial suite radionuclides in soil is not technically feasible due to the MDC biasing issues discussed above. Based on a generalized assumption that the contaminated water that caused concrete contamination would be similar to the source of soil contamination, the ROC and radionuclide mixture derived for the Auxiliary Building concrete was considered to be reasonably representative of soils for FSS planning and implementation.

The ROC for surface soils are listed in Table 1 below (From Table 5-2 of the LTP):

Table 1 - Dose Significant Radionuclides and Mixture Auxiliary Building Radionuclide % of Total Activity (normalized)(1)(2)

Co-60 0.92%

Ni-63 23.71%

Sr-90 0.05%

Cs-134 0.01%

Cs-137 75.32%

(1) Based on maximum percent of total activity from Table 20 of TSD 14-019, normalized to one for the dose significant radionuclides (2) Does not include dose significant radionuclides for activated concrete (H-3, Eu-152, Eu-154).

A fundamental precursor to survey design is to establish a relationship between the release criteria and some measurable quantity. This is done through the development of DCGLs. The DCGLs represent average levels of radioactivity above background levels and are presented in terms of surface or mass activity concentrations. Chapter 6 of the LTP describes in detail the modeling used to develop the DCGLs for soils.

Surface soil is defined as soil residing in the first 0.15 m (6 inches) layer of soil. A subsurface soil category, which is defined as a layer of soil beginning at the surface but extending to a depth of 1 m is also assessed to allow for flexibility in compliance demonstration if contamination deeper than 0.15 m is encountered. Site-specific DCGLs for soil were calculated for both the 0.15 m and 1 m thicknesses. Based on characterization data and historical information, there are no expectations of encountering a source term geometry that is comprised of a clean surface layer of soil over a contaminated subsurface soil layer. ZionSolutions TSD 14-011, Soil Area Factors (Reference 9) and LTP Chapter 6, Section 6.8 provides the exposure scenarios and modeling parameters that were used to calculate the site-specific DCGLs for soils (referred to as BcDCGL in this Release Record).

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 At ZNPS, compliance is demonstrated through the summation of dose from four distinct source terms for the end-state (basements, soils, buried pipe and groundwater). Basements are comprised of the summation of four structural source terms (surfaces, embedded pipe, penetrations, and fill). When applied to soil, the DCGLs are expressed in units of activity per unit of mass (pCi/g).

The unity rule is applied when there is more than one ROC. The measurement results for each singular ROC present in the mixture are compared against their respective DCGL to derive a dose fraction.

The surface and subsurface soil BcDCGLs for the unrestricted release of open land survey units are listed in Tables 5-5 and 5-6 of the LTP and are provided in Table 2 and Table 3, respectively.

The Insignificant Contributor (IC) dose percentage of 10% was used to adjust the DCGLs in soils to account for the dose from the eliminated IC radionuclides.

Table 2 - Base Case DCGLs for Surface Soils (BcDCGLSS)

Surface Soil DCGL Radionuclide (pCi/g)

Co-60 4.26 Cs-134 6.77 Cs-137 14.18 Ni-63 3,572.10 Sr-90 12.09 Table 3 - Base Case DCGLs for Subsurface Soils (BcDCGLSB)

Subsurface Soil Radionuclide DCGL (pCi/g)

Co-60 3.44 Cs-134 4.44 Cs-137 7.75 Ni-63 763.02 Sr-90 1.66 Each radionuclide-specific Base Case DCGL is equivalent to the level of residual radioactivity (above background levels) that could, when considered independently, result in a Total Effective Dose Equivalent (TEDE) of 25 mrem per year to an Average Member of the Critical Group (AMCG). To ensure that the summation of dose from each source term is 25 mrem/yr or less after all FSS is completed, the BcDCGLs are reduced based on an expected, or a priori, fraction of the 25 mrem/yr dose limit from each source term. The reduced DCGLs, or Operational DCGLs can be related to the BcDCGLs as an expected fraction of dose based on an a priori

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 assessment of what the expected dose should be based on the results of site characterization, process knowledge and the extent of planned remediation. The OpDCGL is then used as the DCGL for the FSS design of the survey unit (calculation of surrogate DCGLs, investigations levels, etc.). Details of the OpDCGLs derived for each dose component and the basis for the applied a priori dose fractions are provided in ZionSolutions TSD 17-004, Operational Derived Concentration Guideline Levels for Final Status Survey (Reference 10)

The OpDCGLs for the FSS of surface and subsurface soils are listed in Tables 5-7 and 5-8 of the LTP and are presented in Table 4 and Table 5, respectively.

Table 4 - Operational DCGLs for Surface Soils (OpDCGLSS)

Surface Soil DCGL Radionuclide (pCi/g)

Co-60 1.091 Cs-134 1.733 Cs-137 3.630 Ni-63 914.458 Sr-90 3.095 Table 5 - Operational DCGLs for Subsurface Soils (OpDCGLSB)

Subsurface Soil Radionuclide DCGL (pCi/g)

Co-60 0.881 Cs-134 1.137 Cs-137 1.984 Ni-63 195.333 Sr-90 0.425 In accordance with NUREG-1757, Appendix G, if the HSA indicates that there is no likelihood of substantial subsurface residual radioactivity, subsurface surveys are not necessary. The HSA as well as the results of the extensive characterization of subsurface soils in the impacted area surrounding the Zion facility have shown that there is minimal residual radioactivity in subsurface soil. Consequently, Zion proposes to perform minimal subsurface sampling during FSS.

Instrument DQOs included a verification of the ability of the survey instrument to detect the radiation(s) of interest at the required scan MDC, which for Class 1 Open Land survey units, is the a priori elevated measurement comparison DCGL (DCGLEMC). Survey instrument response checks were required prior to issuance and after the instrument had been used. Control and

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 accountability of survey instruments was required to ensure the quality and prevent the loss of data.

As part of the DQOs applied to laboratory processes, analysis results were reported as actual calculated results. The actual recorded value was used as the recorded FSS result for measurement and/or sample values that are less than MDC. Negative values were recorded as zero. Results were not reported as less than MDC. Sample report summaries included unique sample identification, analytical method, radionuclide, result, uncertainty, laboratory data qualifiers, units, and the observed MDC.

In accordance with the LTP, for laboratory analysis, MDCs less than 10% of the Operational DCGL were preferable while MDCs up to 50% of the Operational DCGL were acceptable. The maximum acceptable MDC for measurements obtained using field instruments was the a priori DCGLEMC, which was calculated using the methodology described in the LTP, Section 5.6.4.3.

5. SURVEY DESIGN The level of effort associated with planning a survey is based on the complexity of the survey and nature of the hazards. Guidance for preparing FSS plans is provided in procedure ZS-LT-300-001-001 Final Status Survey Package Development.

The DQO process determined that Co-60, Ni-63, Sr-90, Cs-134 and Cs-137 would be the ROC in survey unit 12102. During FSS, concentrations for HTD ROC Ni-63 and Sr-90 are inferred using a surrogate approach. Cs-137 is the principal surrogate radionuclide for Sr-90 and Co-60 is the principal surrogate radionuclide for Ni-63. The mean, maximum and 95% Upper Confidence Level (UCL) of the surrogate ratios for concrete core samples taken in the Auxiliary Building basement were calculated in ZionSolutions TSD 14-019, Radionuclides of Concern for Soil and Basement Fill Model Source Terms and are presented in Table 6. The maximum ratios will be used in the surrogate calculations during FSS unless area specific ratios are determined by continuing characterization.

Table 6 - Surrogate Ratios Auxiliary Building Ratios Mean Max 95%UCL Ni-63/Co-60 44.143 180.450 154.632 Sr-90/Cs-137 0.001 0.002 0.002 For the FSS of survey unit 12112, the surrogate OpDCGLs for Co-60 and Cs-137 were computed based on the maximum ratios from Table 6. The equation for calculating a surrogate DCGL is as follows:

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Equation 1 1

=

1 2 3

[( ) + ( ) + ( ) + ( )]

2 3 Where: DCGLSur = Surrogate radionuclide DCGL DCGL2,3n = DCGL for radionuclides to be represented by the surrogate Rn = Ratio of concentration (or nuclide mixture fraction) of radionuclide n to surrogate radionuclide Using the OpDCGLs for surface soils presented in Table 4 and the maximum ratios from Table 6, the following surrogate calculations for surface soils were performed:

Equation 2 1

(137) = = 3.622 /

1 0.002

[(3.630 )+( )]

(137) 3.095 (90)

The surrogate Op DCGL for surface soils that was used for Cs-137 in this survey unit for direct comparison of surface soil sample results to demonstrate compliance is 3.622 pCi/g.

Equation 3 1

(60) = = 0.898 /

1 180.45

[(1.091 )+( )]

(60) 914.458 (63)

The surrogate OpDCGL for surface soils that was used for Co-60 in this survey unit for direct comparison of surface soil sample results to demonstrate compliance is 0.898 pCi/g.

Using the BcDCGLs presented in Table 2 and the maximum ratios from Table 6, the following surrogate calculations were performed:

Equation 4 1

(137) = = 14.15 /

1 0.002

[(14.18 )+( )]

(137) 12.09 (90)

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 The surrogate BcDCGL for surface soils that was used for Cs-137 in this survey unit for calculating the DCGLEMC is 14.15 pCi/g.

Equation 5 1

(60) = = 3.51 /

1 180.45

[(4.26 )+( )]

(60) 3572.10 (63)

The surrogate BcDCGL for surface soils that was used for Co-60 in this survey unit for calculating the DCGLEMC is 3.51 pCi/g.

For this Class 1 open land survey unit, the Investigation Levels for area scanning and soil sample measurement results are those levels specified in LTP Chapter 5, Table 5-25 and are reproduced below in Table 7.

Table 7 - Investigation Levels Direct Investigation Classification Scan Investigation Levels Levels

>Operational DCGL or >MDCscan if Class 1 > Operational DCGL MDCscan is greater than Operational DCGL The MDCscan for the 2350-1/44-10 was calculated using the methodology of TSD-11-004, Ludlum Model 44-10 Detector Sensitivity (Reference 11) with the following parameters:

background count rate of 5500 counts per minute (cpm)

scan speed of 0.25 m/sec

distance from detector to surface of 2

isotopic mix of 95% Cs-137 and 5% Co-60 The calculated MDCscan value was 2.78 pCi/g, which was greater than the calculated Surrogate DCGLs, therefore the scan investigation level was set at the MDCscan of the 2350-1/44-10. The collimator was not used during the scan surveys.

The Sign Test was selected as the non-parametric statistical test. The use of the Sign Test did not require the selection or use of a background reference area, which simplified survey design and implementation. This approach was conservative since it included background Cs-137 as part of the sample set.

The number of soil samples for FSS was determined in accordance with procedure ZS-LT-300-001-001 Final Status Survey Package Development. The relative shift (/) for the survey unit data set is defined as shift (), which is the Upper Bound of the Gray Region (UBGR), or the DCGL (SOF of 1) minus the Lower Bound of the Gray Region (LBGR) (SOF of 0.5), divided by sigma (), which is the standard deviation of the data set used for survey design. The optimal value for / should range between 1 and 3. The largest value the / can have is 3. If the /

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 exceeds 3, then the value of 3 will be used for /. For this survey design, a conservative estimate of the sample variability of 0.30 was used as the coefficient of variation to calculate /.

The calculated relative shift was 1.67. Both the Type I error, or value and the Type II error, or value was set at 0.05. The sample size from Table 5.5 of MARSSIM that equates to the Type I and Type II error of 0.05 for use with the Sign Test is an N value of 17.

The computer program Visual Sample Plan (VSP) was used to generate the sample map, in accordance with ZS-LT-300-001-001. The map used was provided by the Survey Mapping/CAD Specialist, with coordinates based on the NAD standard topographical grid coordinate system.

The number of samples generated by VSP for a systematic triangular grid was 17. The Prospective Power Curve generated by VSP showed adequate power for the survey design.

In accordance with Section 5.6.4.3 of the LTP, the a priori DCGLEMC values were calculated for the gamma emitting ROC to ensure that the MDCSCAN of the selected instrument was sufficient to detect small areas of elevated activity in the survey unit. The calculations were:

2034

To calculate the area bounded by the systematic samples: = = = 119.6 2 17

From the LTP, Table 5-16, the Area Factors for the next larger area, 100 m2 area were used:

o Cs-137 - 1.46 o Cs-134 - 1.16 o Co 1.30

The DCGLEMC is the Surrogate Base Case DCGL times the Area Factor:

o The DCGLEMC for Cs-137 = 1.46 14.15 = 20.66 /

o The DCGLEMC for Cs-134 - 1.30 6.77 = 8.80 /

o The DCGLEMC for Co 1.16 3.51 = 4.07 /

The calculated MDCSCAN, 2.78 pCi/g, is less than the DCGLEMC values calculated above, therefore, the spacing of the statistical systematic sampling and measurement locations was adequate to detect small areas of elevated radioactivity. No adjustment to the sample number was required.

The implementation of quality control measures as referenced by LTP Chapter 5, Section 5.9 and ZionSolutions ZS-LT-01, Quality Assurance Project Plan (for Characterization and FSS) (QAPP) (Reference 12) includes the collection of a soil sample for split sample analysis on 5% of the soil samples taken in a survey unit with the locations selected at random.

One (1) surface soil sample, L1-12103A-FQGS-308-SS was selected randomly for split sample analysis for the FSS of this survey unit.

In accordance with Section 5.7.1.6.2 of the LTP, a subsurface soil sample was taken at 10%

of the systematic surface soil sample locations in the survey unit with the location(s) selected at random. Locations L1-12103A-FSGS-305-SB and L1-12103A-FSGS-316-SB were selected for this survey unit.

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 The locations of the seventeen (17) systematic samples are listed in Table 8. Note, samples were numbered starting with 301. This is because systematic samples were collected in previous FSS of this survey unit. A map of the systematic sample locations is included in Attachment 1.

Table 8 - Systematic Sample Measurement Locations NORTHING EASTING MEASUREMENT ID (meters) (meters)

L1-12103A-FSGS-301-SS 641801.84 343756.75 L1-12103A-FSGS-302-SS 641801.84 343768.50 L1-12103A-FSGS-303-SS 641801.84 343780.26 L1-12103A-FSGS-304-SS 641801.84 343792.01 L1-12103A-FSGS-305-SS 641812.02 343750.88 L1-12103A-FSGS-306-SS 641812.02 343762.63 L1-12103A-FSGS-307-SS 641812.02 343774.38 L1-12103A-FSGS-308-SS 641812.02 343786.13 L1-12103A-FSGS-309-SS 641812.02 343797.89 L1-12103A-FSGS-310-SS 641812.02 343809.64 L1-12103A-FSGS-311-SS 641822.19 343756.75 L1-12103A-FSGS-312-SS 641822.19 343768.50 L1-12103A-FSGS-313-SS 641822.19 343780.26 L1-12103A-FSGS-314-SS 641822.19 343792.01 L1-12103A-FSGS-315-SS 641822.19 343803.76 L1-12103A-FSGS-316-SS 641832.37 343750.88 L1-12103A-FSGS-317-SS 641832.37 343762.63 ZSRP LTP Chapter 5, Section 5.1 states that soil samples will be collected during FSS to confirm the HTD to surrogate radionuclide ratios (Table 6). Ten percent (10%) of the FSS samples collected from open land survey units will be analyzed for HTD ROC. Only HTD radionuclides included as ROC (Ni-63 and Sr-90 for soils) will be analyzed in the FSS confirmatory samples. For soil samples with positive results for both a HTD ROC and the corresponding surrogate radionuclide (Cs-137 or Co-60), the HTD surrogate ratio will be derived and compared against the maximum ratio (see Table 6). The maximum ratios (Table

6) will be used unless specific survey information supports the use of a surrogate ratio that is specific to the area. In these cases, the survey unit-specific radiological data and the derived surrogate ratios will be submitted to the NRC for approval. If approved, then the survey unit-specific ratios used and the survey data serving as the basis for the surrogate ratios will be documented in the release record for the survey unit.

In addition, LTP Chapter 5, Section 5.1 states that if levels of residual gamma radioactivity in an individual soil sample exceed an OpSOF of 0.1, then the sample(s) will be analyzed for HTD ROC.

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 No soil sample exceeded an OpSOF of 0.1. Three (3) soil samples were chosen to be analyzed for HTD. Each sample was sent off-site (GEL Laboratories) for HTD analysis as specified in the FSS Sample Plan. The following samples were selected:

1. L1-12103A-FIGS-301-SS

2. L1-12103A-FIGS-301-SB

3. L1-12103A-FIGS-302-SS

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Table 9 provides a synopsis of the survey design for survey unit 12103.

Table 9 - Synopsis of Survey Design FEATURE DESIGN CRITERIA BASIS Survey Unit Area 2,034 m2 GPS measurements of area

= 0.30

UBGR = SOF of 1

LBGR = SOF of 0.5 Number of Surface 17 (Systematic)

Type I error = 0.05 Soil Samples

Type II error = 0.05

/ = 1.67 (MARSSIM Table 5.5)

(LTP Chapter 5, Section Grid Spacing 11.8 m 5.6.4.5.2)

Co 1.091 pCi/g

Cs-134 - 1.733 pCi/g Operational DCGLs for Surface DCGLs

Cs-137 - 3.630 pCi/g Soils, (LTP Chapter 5, Table 5-7)

Ni 914.458 pCi/g

Sr 3.095 pCi/g HTD Analysis A minimum of two (2) soil samples (LTP Chapter 5, section 5.1) selected for HTD ROC analysis Measurement Operational DCGL (LTP Chapter 5, Table 5-25)

Investigation Level Scan Survey Area 100% (LTP Chapter 5, Table 5-24)

Coverage One (1) surface soil sample selected QC (LTP Chapter 5, Section 5.9) randomly for split sample analysis Number of Two (2) systematic surface soil sample (LTP Chapter 5, Section Subsurface Soil locations selected randomly 5.7.1.6.2)

Samples

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103

6. SURVEY IMPLEMENTATION Survey instructions for this FSS were incorporated into and performed in accordance with FSS Sample Plan L1-12103A-F Plan #3, which was developed in accordance with ZionSolutions procedure ZS-LT-300-001-001, Final Status Survey Package Development. The FSS unit was inspected and controlled in accordance with ZionSolutions procedure ZS-LT-300-001-003, Isolation and Control for Final Status Survey (Reference 13).

For survey unit 12103, compliance with the unrestricted release criteria was demonstrated through a combination of surface scanning with a Ludlum Model 44-10 gamma detector and the sampling of surface soil for isotopic analysis. In accordance with the LTP Chapter 5, two (2) subsurface samples were obtained. Also, if during the performance of FSS, the analysis of a surface soil sample, or the results of a surface gamma scan indicated the potential presence of residual radioactivity at a concentration of 75% of the subsurface Operational DCGL, then a biased subsurface soil sample(s) would be taken to the appropriate depth within the area of concern as part of the investigation. This threshold was encountered during the FSS of survey unit 12103 during the surface scans. Numerous scan alarms were recorded during the gamma walkover survey. The areas showing activity above the Action Level were marked. Additional investigation soil samples were taken. A detailed discussion of these surveys/samples are included in Section 9 (Investigations and Results).

FSS field activities were conducted under FSS Sample Plan L1-12103A-F Plan #3. A Field Log (ZS-LT-300-001-001 Attachment 14) was used to document field activities and other information pertaining to the performance of the FSS.

FSS field activities were projected to take four (4) working days to complete. Daily briefings were conducted to discuss the expectations for job performance and to review safety aspects of the job. The survey required field activities were performed during normal working hours starting on June 24, 2022 and concluding on July 11, 2022.

The seventeen (17) systematic surface soil sample locations were measured, using XY coordinates provided by VSP, from the southwest corner of the survey unit and marked with flags.

Gamma scans were performed on 100% of the surface area of the survey unit using a Ludlum 2350-1 paired with a Model 44-10 (2x 2) NaI detector operated in the rate-meter mode and using audio response. The probe was positioned within 2 to the ground and was moved at a scan speed of approximately 0.25 meters per second. Numerous areas of elevated activity were detected on the scans (see Section 9 for further discussion). Daily prior to use and daily following use, each detector was subjected to an Operational Response Check in accordance with procedure ZS-RP-108-004-011, Operation of the Ludlum Model 2350-1 Data Logger (Reference 14).

The Daily Operational Response Check compared the background response and the response to

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 check sources ranges established for normal background and detector source response to ensure that the detector was working properly.

The instruments and detectors used for this survey are presented in Table 10. The instruments and detectors were verified to be properly calibrated prior to use.

Table 10 - Instruments and Detectors Instrument/Detector Type Serial # Calibration Due Date Ludlum 2350-1/Ludlum 44-10 304708/PR321892 6/7/2023 Ludlum 2350-1/Ludlum 44-10 266656/PR311750 7/1/2022 Ludlum 2350-1/Ludlum 44-10 216188/RN25063 11/4/2022 Ludlum 2350-1/Ludlum 44-10 216174/PR226936 11/2/2022 Ludlum 2350-1/Ludlum 44-10 266669/PR311756 6/7/2023 In accordance with the survey design, seventeen (17) surface soil samples were collected at the designated systematic sample points. In addition, two (2) subsurface samples and one (1) QC sample were collected at the randomly selected systematic sample locations. Ten (10) investigation soil samples were collected at locations identified as elevated activity on the surface scans: Eight (8) surface samples, one (1) QC surface sample and one (1) subsurface samples.

Three (3) samples were selected for HTD radionuclide analysis.

7. SURVEY RESULTS One hundred percent (100%) of the surface of the survey unit was scanned for elevated radiation levels. Sixty-eight (68) 1-m wide scan rows, as shown on the map in Attachment 1, were marked in the field and scanned with the 2350-1/44-10 using latching mode. Readings were recorded at approximately 10-meter intervals during the scans. Numerous elevated measurement locations were identified by surface scan. Table 11 provides an overview of the scan results. Complete scan results are provided in Attachment 2.

Table 11 - Synopsis of Scan Results Highest Action # of Scan Logged Level(1) Scan Investigation Samples Row Reading Alarms (cpm) (cpm) 1 2 North 10.5m section of rows 1-12 was above the ASP. The 6846 6252 1 highest readings was latched in row #7.

3 4

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Table 11 (continued) - Synopsis of Scan Results Highest Action Scan Logged # of Scan Level(1) Investigation Samples Row Reading Alarms (cpm) (cpm) 5 8223 6252 L1-12103A-FIGS-304-SS 6 x 6252 7 7606 6252 The north 5m of the center 10.5m section rows 5 - 8 was 8 x 6252 above the ASP. The 2 highest readings were latched.

2 9 x 6252 10 x 6252 11 x 6252 12 x 6252 13 7049 6298 North 10.5m section of rows 13-39 was above the ASP.

14 x 6298 The highest readings were latched. No readings were 15 x 6298 above the ASP in the center and south sections.

16 8665 6298 17 x 6298 18 x 6298 19 x 6298 20 x 6298 21 9144 6298 L1-12103A-FIGS-306-SS 22 x 6298 23 x 6298 24 x 6298 25 x 6298 26 x 6298 5 27 x 6298 28 x 6298 29 x 6298 30 x 6298 31 8701 6298 32 x 6298 33 x 6298 34 x 6298 35 9021 6298 L1-12103A-FIGS-307-SS 36 x 6298 37 x 6298 38 x 6298 39 x 6298

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Table 11 (continued) - Synopsis of Scan Results Scan Highest Action # of Scan Logged Level(1) Investigation Samples Row Alarms (cpm)

Reading (cpm) 40 9182 6305 1 L1-12103A-FIGS-305-SS 41 7634 6239 1 42 7307 6239 1 The north and center10.5m sections of rows 40-48 were 43 6887 6239 1 above the ASP. The highest readings were latched. No 44 6962 6239 1 readings were above the ASP in the south section.

45 6861 6239 1 46 x 6239 x 47 9426 6305 1 L1-12103A-FIGS-308-SS & L1-12103A-QIGS-308-SS 48 6776 6239 1 49 9168 6231 50 x 6231 The north 10.5m section of rows 49-53 was above the ASP.

51 9407 6231 3 The highest readings were latched. No readings were above 52 x 6231 the ASP in the center and south sections.

53 8916 6231 54 6191 6239 0 55 15869 5885 1 South section - DRP captured - L1-12103A-FIGS-301-SS and 56 5296 5806 0 /302 and L1-12103A-FIGS-302-SS 57 5436 5806 0 58 5596 5806 0 59 5704 6231 0 60 5785 6231 0 61 5578 6231 0 62 5711 6231 0 63 6181 6231 0 64 5542 6231 0 65 6023 6231 0 66 5940 6231 0 67 5985 6231 0 68 6468 5614 1 South section - L1-12103A-FIGS-303-SS The action level is based on the measurement Minimum Detectable Count Rate (MDCR) plus Note 1:

background in accordance with the FSS plan Seventeen (17) systematic surface soil samples taken for non-parametric statistical testing, eight (8) investigation surface soil samples, two (2) QC soil samples, and three (3) subsurface soil samples were sent off-site to be analyzed by GEL Laboratories. Summaries of the sample analysis results for the systematic sample population are provided in Tables 12 and 13, respectively. The basic statistics for the systematic sample population are summarized in Table

19. The gamma spectroscopy results revealed three (2) samples with activity levels above MDA

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 for Cs-137, and no samples with activity levels above MDA for Cs-134 or Co-60. The concentration for Ni-63 and Sr-90 are inferred based on the maximum ratios as specified in Table

6. The mean of the gamma spectroscopic analysis results for the sample population indicated that Cs-137 was present at levels lower than the concentrations of Cs-137 expected to be found in off-site soil in the vicinity of the ZNPS as presented in ZionSolutions TSD 13-004, Examination of Cs-137 Global Fallout in Soils at Zion Station (Reference 15). The complete gamma spectroscopy reports are presented in Attachment 8.

Table 12 - Summary of Gamma Spectroscopy Results for Surface Soil Samples Comprising the Statistical Sample Population Co-60(1) Cs-134(1) Cs-137(1) Ni-63(2) Sr-90(2)

MEASUREMENT ID (pCi/g) (pCi/g) (pCi/g) (pCi/g) (pCi/g)

L1-12103A-FSGS-301-SS 1.90E-02 5.87E-02 1.05E-02 3.43E+00 2.10E-05 L1-12103A-FSGS-302-SS 0.00E+00 2.08E-02 5.53E-03 0.00E+00 1.11E-05 L1-12103A-FSGS-303-SS 8.63E-03 0.00E+00 4.53E-02 1.56E+00 9.06E-05 L1-12103A-FSGS-304-SS 0.00E+00 1.50E-03 0.00E+00 0.00E+00 0.00E+00 L1-12103A-FSGS-305-SS 0.00E+00 1.28E-02 2.46E-02 0.00E+00 4.92E-05 L1-12103A-FSGS-306-SS 1.79E-02 6.32E-03 2.26E-02 3.23E+00 4.52E-05 L1-12103A-FSGS-307-SS 6.71E-03 3.08E-02 1.46E-02 1.21E+00 2.92E-05 L1-12103A-FSGS-308-SS 1.22E-03 3.15E-03 1.37E-02 2.20E-01 2.74E-05 L1-12103A-FSGS-309-SS 1.22E-02 2.19E-02 5.07E-02 2.20E+00 1.01E-04 L1-12103A-FSGS-310-SS 4.87E-04 2.16E-02 0.00E+00 8.79E-02 0.00E+00 L1-12103A-FSGS-311-SS 2.80E-02 5.33E-04 0.00E+00 5.05E+00 0.00E+00 L1-12103A-FSGS-312-SS 2.22E-02 1.18E-02 8.91E-03 4.01E+00 1.78E-05 L1-12103A-FSGS-313-SS 2.18E-02 2.88E-02 1.16E-02 3.93E+00 2.32E-05 L1-12103A-FSGS-314-SS 3.92E-02 0.00E+00 2.14E-02 7.07E+00 4.28E-05 L1-12103A-FSGS-315-SS 2.51E-02 0.00E+00 2.13E-02 4.53E+00 4.26E-05 L1-12103A-FSGS-316-SS 0.00E+00 1.70E-02 1.98E-02 0.00E+00 3.96E-05 L1-12103A-FSGS-317-SS 0.00E+00 1.30E-02 2.29E-03 0.00E+00 4.58E-06 Note: (1) Bold font indicates ROC positively detected at concentration greater than MDC.

(2) Ni-63 and Sr-90 are inferred concentrations using the maximum HTD ratio.

Table 13 - Summary of Gamma Spectroscopy Results for Subsurface Soil Samples Co-60(1) Cs-134(1) Cs-137(1) Ni-63(2) Sr-90(2)

MEASUREMENT ID (pCi/g) (pCi/g) (pCi/g) (pCi/g) (pCi/g)

L1-12103A-FSGS-305-SB 2.19E-02 0.00E+00 4.23E-02 3.95E+00 8.46E-05 L1-12103A-FSGS-316-SB 1.46E-02 2.48E-02 2.61E-02 2.63E+00 5.22E-05 Note: (1) Bold font indicates ROC positively detected at concentration greater than MDC.

(2) Ni-63 and Sr-90 are inferred concentrations using the maximum HTD ratio.

[24]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 The off-site laboratory, GEL Laboratories, processed a total of three (3) samples selected for HTD ROC analysis. The following samples were selected:

1. L1-12103A-FIGS-301-SS

2. L1-12103A-FIGS-301-SB

3. L1-12103A-FIGS-302-SS Calculations of the surrogate ratios listed in Table 6 for HTD radionuclides included as ROC (Ni-63 and Sr-90 for soils) are included in the following table. All analyses met the required MDC. Only Cs-137 was positively detected in each of the samples at a concentration greater than MDC. Consequently, comparison of existing ratios verses the maximum ratios from Table 6 was not required. The results are provided in Table 14.

Table 14 - Surrogate Ratio Analysis Results Sample # L1-12103A-FSGS-301-SS Result Uncertainty MDC ROC >MDC (pCi/g) (pCi/g) (pCi/g)

Co-60 1.95E-02 2.04E-02 4.84E-02 No Cs-134 -8.55E-03 2.42E-02 4.47E-02 No Cs-137 6.36E-02 4.56E-02 3.93E-02 Yes Ni-63 1.28E+00 5.22E+00 8.98E+00 No Sr-90 -3.67E-03 2.10E-02 4.05E-02 No Sample # L1-12103A-FSGS-301-SB Result Uncertainty MDC ROC >MDC (pCi/g) (pCi/g) (pCi/g)

Co-60 -9.26E-03 1.92E-02 3.50E-02 No Cs-134 1.71E-02 2.93E-02 4.38E-02 No Cs-137 4.53E-02 2.96E-02 3.31E-02 Yes Ni-63 7.04E-01 5.29E+00 9.14E+00 No Sr-90 3.16E-02 2.55E-02 4.13E-02 No Sample # L1-12103A-FSGS-302-SS Result Uncertainty MDC ROC >MDC (pCi/g) (pCi/g) (pCi/g)

Co-60 2.61E-02 1.98E-02 4.67E-02 No Cs-134 0.00E+00 2.60E-02 4.60E-02 No Cs-137 7.40E-02 3.50E-02 3.88E-02 Yes Ni-63 1.83E+00 5.33E+00 9.13E+00 No Sr-90 1.41E-02 2.37E-02 4.13E-02 No

[25]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 The implementation of survey specific QC measures included the collection of one (1) systematic sample (L1-12103A-FQGS--SS) and one (1) biased sample (L1-12103A-QIGS-308-SS) for split sample analysis. GEL Laboratories analyzed the designated QC samples. Gamma spectroscopy results (summarized in Table 15) indicate that concentrations of Cs-137, Co-60 and Cs-134 were less than MDC in both samples. The concentration for Ni-63 and Sr-90 are inferred based on the maximum ratios as specified in Table 6.

Table 15 - Summary of Gamma Spectroscopy Results for QC Soil Samples Co-60(1) Cs-134(1) Cs-137(1) Ni-63(2) Sr-90(2)

MEASUREMENT ID (pCi/g) (pCi/g) (pCi/g) (pCi/g) (pCi/g)

L1-12103A-FSGS-308-SS 7.16E-03 2.90E-03 1.37E-02 1.29E+00 2.74E-05 L1-12103A-QIGS-308-SS 0.00E+00 2.48E-02 0.00E+00 0.00E+00 0.00E+00 Note: (1) Bold font indicates ROC positively detected at concentration greater than MDC.

(2) Ni-63 and Sr-90 are inferred concentrations using the maximum HTD ratio.

The sample plan also directed that 5% of the survey unit area be surveyed for QC by gamma walkover scans, with the area to be selected by the RE.

Areas selected for the QC scan consisted of four (4) sections, two (2) of which were rows that identified scan readings above the Action Level for the survey. QC scan surveys were documented on survey 22-0151. The area covered was 108 m2, 5.3% of the survey unit.

The results of the QC scans agreed with the results of the initial scans.

The SOF or unity rule is the mathematical test used to evaluate compliance with radiological criteria for license termination when more than one radionuclide has been determined to be potentially present. The equation for the unity rule is:

Equation 6 C1 C2 Cn

+ +............ 1 DCGL1 DCGL2 DCGLn Where: Cn = concentration of radionuclide n DCGLn = DCGL of radionuclide n.

The results of the unity rule calculation for the ROC in the systematic sample population when compared against the OpDCGLs for surface soils for survey unit 12103 are provided in Table

16. The results of the unity rule calculation for the ROC for the subsurface samples are provided in Table 17 and the results for the QC sample are presented in Table 18.

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Table 16 - Sum-of-Fractions for Individual Surface Soil Samples, when compared to the OpDCGLs (Systematic)

Fraction of the OpDCGLs for Surface Soils MEASUREMENT ID OpSOF Co-60 Cs-134 Cs-137 Ni-63 Sr-90 L1-12103A-FSGS-301-SS 1.74E-02 3.39E-02 2.89E-03 3.75E-03 6.79E-06 0.058 L1-12103A-FSGS-302-SS 0.00E+00 1.20E-02 1.52E-03 0.00E+00 3.57E-06 0.014 L1-12103A-FSGS-303-SS 7.91E-03 0.00E+00 1.25E-02 1.70E-03 2.93E-05 0.022 L1-12103A-FSGS-304-SS 0.00E+00 8.66E-04 0.00E+00 0.00E+00 0.00E+00 0.001 L1-12103A-FSGS-305-SS 0.00E+00 7.39E-03 6.78E-03 0.00E+00 1.59E-05 0.014 L1-12103A-FSGS-306-SS 1.64E-02 3.65E-03 6.23E-03 3.53E-03 1.46E-05 0.030 L1-12103A-FSGS-307-SS 6.15E-03 1.78E-02 4.02E-03 1.32E-03 9.43E-06 0.029 L1-12103A-FSGS-308-SS 1.12E-03 1.82E-03 3.77E-03 2.41E-04 8.85E-06 0.007 L1-12103A-FSGS-309-SS 1.12E-02 1.26E-02 1.40E-02 2.41E-03 3.28E-05 0.040 L1-12103A-FSGS-310-SS 4.46E-04 1.25E-02 0.00E+00 9.61E-05 0.00E+00 0.013 L1-12103A-FSGS-311-SS 2.57E-02 3.08E-04 0.00E+00 5.53E-03 0.00E+00 0.031 L1-12103A-FSGS-312-SS 2.03E-02 6.81E-03 2.45E-03 4.38E-03 5.76E-06 0.034 L1-12103A-FSGS-313-SS 2.00E-02 1.66E-02 3.20E-03 4.30E-03 7.50E-06 0.044 L1-12103A-FSGS-314-SS 3.59E-02 0.00E+00 5.90E-03 7.74E-03 1.38E-05 0.050 L1-12103A-FSGS-315-SS 2.30E-02 0.00E+00 5.87E-03 4.95E-03 1.38E-05 0.034 L1-12103A-FSGS-316-SS 0.00E+00 9.81E-03 5.45E-03 0.00E+00 1.28E-05 0.015 L1-12103A-FSGS-317-SS 0.00E+00 7.50E-03 6.31E-04 0.00E+00 1.48E-06 0.008 Systematic Measurements Number of Systematic Measurements = 17

of Systematic Measurements with OpSOF > 1 = 0

of Systematic Measurements with OpSOF > 0.1 (HTD Assessment) = 0 Max Individual Systematic Measurement OpSOF = 0.058 Mean Systematic Measurement OpSOF = 0.026 Table 17 - Sum-of-Fractions for Individual Subsurface Soil Samples, when compared to the OpDCGLs Fraction of the OpDCGLs for Subsurface Soils MEASUREMENT ID OpSOF Co-60 Cs-134 Cs-137 Ni-63 Sr-90 L1-12103A-FSGS-305-SB 2.49E-02 0.00E+00 2.13E-02 2.02E-02 1.99E-04 0.067 L1-12103A-FSGS-316-SB 1.66E-02 2.18E-02 1.32E-02 1.35E-02 1.23E-04 0.065 Table 18 - Sum-of-Fractions for Individual QC Soil Samples, when compared to the OpDCGLs Fraction of the OpDCGLs for Surface soils MEASUREMENT ID OpSOF Co-60 Cs-134 Cs-137 Ni-63 Sr-90 L1-12103A-FSGS-308-SS 6.56E-03 1.67E-03 3.77E-03 1.41E-03 8.85E-06 0.013 L1-12103A-QIGS-308-SS 0.00E+00 1.43E-02 0.00E+00 0.00E+00 0.00E+00 0.014

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Table 19 - Basic Statistical Properties of Systematic Sample Population Mean Median Max Min BcDCGL Avg. SOF Avg. Dose ROC Std. Dev.

(pCi/g) (pCi/g) (pCi/g) (pCi/g) (pCi/g) per ROC Per ROC Co-60 1.19E-02 8.63E-03 3.92E-02 0.00E+00 0.012 4.26 2.80E-03 6.99E-02 Cs-134 1.37E-02 1.28E-02 5.87E-02 0.00E+00 0.017 6.77 2.03E-03 5.08E-02 Cs-137 1.60E-02 1.37E-02 5.07E-02 0.00E+00 0.015 14.18 1.13E-03 2.83E-02 Ni-63 2.15E+00 1.56E+00 7.07E+00 0.00E+00 2.237 3572.1 6.02E-04 1.50E-02 Sr-90 3.21E-05 2.74E-05 1.01E-04 0.00E+00 0.000 12.09 2.65E-06 6.64E-05 The mean BcSOF for survey unit 12103 is 0.007 which equates to a dose of 0.167 mrem/yr TEDE.

The mean of all identified isotopes is less than the Consultation Triggers for Residential and Commercial/Industrial Soil Contamination depicted in Table H.1 of NUREG 1757, Vol.1, Rev.

2 (MOU Table 1). The full table is included in Attachment 3 of this Release Record.

8. QUALITY CONTROL GEL laboratories processed two (2) split samples, L1-12103A-FQGS-308-SS and L1-12103A-QIGS-308-SS using gamma spectroscopy analysis. The data was evaluated using acceptance criteria specified in ZionSolutions procedure ZS-LT-01. There was acceptable agreement between field split results. Refer to Attachment 5 for data and quality control analysis results.

9. INVESTIGATIONS AND RESULTS QC scans were performed in four (4) rows at locations of scan alarms. The initial alarm latch readings were confirmed during the QC scans.

An investigation was performed at the location of a scan alarm in row #55 (15,869 cpm). A DRP was suspected due to the reading appearing to be a point source of activity. A field gamma spec reading taken with the Inspector 1000 identified Co-60. A DRP was identified at a depth of 1 and captured. The DRP read 57k cpm. Three (3) investigation samples, L1-12103A-FIGS-301-SS, L1-12103A-FIGS-301-SB, and L1-12103A-FIGS-302-SS were collected. These samples all showed positive activity for Cs-137, with the highest OpSOF of 0.077.

An investigation was performed at the location of a scan alarm in row #68 (6,468 cpm). A DRP was suspected due to the reading appearing to be a point source of activity. A field gamma spec reading taken with the Inspector 1000 identified no plant related nuclides. A DRP was not identified during the investigation. An investigation sample, L1-12103A-FIGS-303-SS was collected. This sample showed no activity above MDC for the ROC.

The north 10.5m of the survey unit, from rows 1 to 53, and the center 10.5m of the survey unit, from rows 40 to 48 was uniformly above the ASP. The northern 5m of the center section of rows 5 to 8 also was above the ASP. The FSS Technicians were directed to perform a 100% scan of these rows, collecting latch values at the points of highest activity. Twenty-one (21) latch

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 readings were recorded, with readings from 6776 cpm to 9426 cpm. Field gamma spec readings were taken at each location using the Inspector 1000. No plant related nuclides were identified.

Seven (7) of the systematic samples were located within this area. An additional five (5) investigation samples were taken in this area (L1-12103A-FIGS-304-SS through L1-12103A-FIGS-308-SS). The results of the twelve (12) samples taken in this area showed no activity above MDC for the ROC.

Table 20- Summary of Gamma Spectroscopy Results for Investigation Surface and Subsurface Soil Samples Co-60(1) Cs-134(1) Cs-137(1) Ni-63(2) Sr-90(2)

MEASUREMENT ID (pCi/g) (pCi/g) (pCi/g) (pCi/g) (pCi/g)

L1-12103A-FIGS-301-SS 9.69E-03 2.15E-02 4.82E-02 1.75E+00 9.64E-05 L1-12103A-FIGS-301-SB 1.81E-02 3.40E-03 7.30E-02 3.27E+00 1.46E-04 L1-12103A-FIGS-302-SS 1.83E-03 9.82E-03 6.46E-02 3.30E-01 1.29E-04 L1-12103A FIGS-303-SS 1.22E-02 8.45E-03 1.06E-02 2.20E+00 2.12E-05 L1-12103A-FIGS-304-SS 0.00E+00 5.38E-02 2.51E-02 0.00E+00 5.02E-05 L1-12103A-FIGS-305-SS 0.00E+00 6.24E-03 0.00E+00 0.00E+00 0.00E+00 L1-12103A-FIGS-306-SS 0.00E+00 6.27E-03 1.34E-02 0.00E+00 2.68E-05 L1-12103A-FIGS-307-SS 3.03E-02 3.60E-02 1.19E-03 5.47E+00 2.38E-06 L1-12103A-FIGS-308-SS 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Note: (1) Bold font indicates ROC positively detected at concentration greater than MDC.

(2) Ni-63 and Sr-90 are inferred concentrations using the maximum HTD ratio.

Table 21 - Sum-of-Fractions for Investigation Surface and Subsurface Soil Samples, when compared to the OpDCGLs Fraction of the OpDCGLs for Surface and Subsurface MEASUREMENT ID Soils OpSOF Co-60 Cs-134 Cs-137 Ni-63 Sr-90 L1-12103A-FIGS-301-SS 8.88E-03 1.24E-02 1.33E-02 1.91E-03 3.11E-05 0.037 L1-12103A-FIGS-301-SB 2.05E-02 2.99E-03 3.68E-02 1.67E-02 3.44E-04 0.077 L1-12103A-FIGS-302-SS 1.68E-03 5.67E-03 1.78E-02 3.61E-04 4.17E-05 0.026 L1-12103A FIGS-303-SS 1.12E-02 4.88E-03 2.92E-03 2.41E-03 6.85E-06 0.018 L1-12103A-FIGS-304-SS 0.00E+00 3.10E-02 6.91E-03 0.00E+00 1.62E-05 0.011 L1-12103A-FIGS-305-SS 0.00E+00 3.60E-03 0.00E+00 0.00E+00 0.00E+00 0.004 L1-12103A-FIGS-306-SS 0.00E+00 3.62E-03 3.69E-03 0.00E+00 8.66E-06 0.007 L1-12103A-FIGS-307-SS 2.78E-02 2.08E-02 3.28E-04 5.98E-03 7.69E-07 0.055 L1-12103A-FIGS-308-SS 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.000

10. REMEDIATION AND RESULTS A DRP was identified and captured in row #55.

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103

11. CHANGES FROM THE SURVEY PLAN None.

12. DATA QUALITY ASSESSMENT (DQA)

The DQO sample design and data were reviewed in accordance with ZionSolutions procedure ZS-LT-300-001-004, Final Status Survey Data Assessment (Reference 16) for completeness and consistency. Documentation was complete and legible. Surveys and sample collection were consistent with the DQOs. The sampling design had adequate power as indicated by the Retrospective Power Curve.

The analytical results of all samples were less than a SOF of one when compared to the Operational DCGLs.

Although MARSSIM states that the Sign Test need not be performed in the instance that no measurements surpass the DCGL, the test was conducted to demonstrate coherence to the statistical principles of the DQO process. The Sign Test was performed on the data and compared to the original assumptions of the DQOs. The evaluation of the Sign Test results clearly demonstrates that the survey unit passes the unrestricted release criteria, thus, the null hypothesis is rejected. The Sign Test is included in Attachment 4.

The preliminary data review consisted of calculating basic statistical quantities (e.g., mean, median, standard deviation). All data was considered valid including negative values, zeros, values reported below the MDC, and values with uncertainties greater than two standard deviations. The mean and median values for each ROC were well below the respective Operational DCGLs. Also, the retrospective power curve shows that a sufficient number of samples were collected to achieve the desired power. Therefore, the survey unit meets the unrestricted release criteria with adequate power as required by the DQOs.

The data for Co-60 and Cs-137 is represented graphically through a frequency plot and a quantile plot. All graphical representations are provided in Attachment 6.

13. ANOMALIES None.

14. CONCLUSION Survey unit 12103 has met the DQOs of the FSS plan. The ALARA criteria for soils as specified in Chapter 4 of the LTP were achieved. The EMC for soils was not needed for this survey unit and remediation was not required.

All identified ROC were used for statistical testing to determine the adequacy of the survey unit for FSS. Evaluation of the data shows that none of the ROC concentration values exceeds the

[30]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Operational DCGL, therefore, in accordance with the LTP Section 5.10, the survey unit meets the release criterion.

The sample data passed the Sign Test. The null hypothesis was rejected. The Retrospective Power Curve showed that adequate power was achieved.

The mean BcSOF, when the analytical results were compared to the BcDCGLs, was 0.007, which results in a dose contribution from soil in survey unit 12103 of 0.167 mrem/yr. based on the average concentration of the ROC in samples used for non-parametric statistical sampling.

The conclusion of this Release Record is that survey unit 12103 is acceptable for unrestricted release.

15. REFERENCES

1. ZionSolutions procedure ZS-LT-300-001-005, Final Status Survey Data Reporting

2. Zion Station Restoration Project License Termination Plan (LTP)

3. ZionSolutions procedure ZS-LT-300-001-001, Final Status Survey Package Development

4. NUREG-1575, Revision 1, Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM)

5. ZionSolutions procedure ZS-LT-300-001-002, Survey Unit Classification

6. Zion Station Historical Site Assessment (HSA)

7. ZionSolutions TSD 11-001, Potential Radionuclides of Concern during the Decommissioning of Zion Station

8. ZionSolutions TSD 14-019, Radionuclides of Concern for Soil and Basement Fill Model Source Terms

9. ZionSolutions TSD 14-011, Soil Area Factors

10. ZionSolutions TSD 17-004, Operational Derived Concentration Guideline Levels for Final Status Survey

11. ZionSolutions TSD 11-004, Ludlum Model 44-10 Detector Sensitivity

12. ZionSolutions procedure ZS-LT-01, Quality Assurance Project Plan (QAPP) for Characterization and Final Status Survey

13. ZionSolutions procedure ZS-LT-300-001-003, Isolation and Control for Final Status Survey

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103

14. ZionSolutions procedure ZS-RP-108-004-011, Operation of the Ludlum Model 2350-1 Data Logger

15. ZionSolutions TSD 13-004, Examination of Cs-137 Global Fallout in Soils at Zion Station

16. ZionSolutions procedure ZS-LT-300-001-004, Final Status Survey Data Assessment

16. ATTACHMENTS

1. Attachment 1 - Figure and Maps

2. Attachment 2 - Scan Data

3. Attachment 3 - Consultation Triggers for Residential and Commercial/Industrial Soil Contamination

4. Attachment 4 - Sign Test

5. Attachment 5 - QC Sample Assessment

6. Attachment 6 - Graphical Presentations

7. Attachment 7 - GEL Labs Certificate of Analysis Reports

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 ATTACHMENT 1 - FIGURE AND MAPS

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Survey Unit 12103 Final Status Survey Boundaries and Systematic Sample Points

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Survey Unit 12103 Final Status Survey Scan Rows

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Survey Unit 12103 Composite Scan Map (with elevated reading latch locations and investigation sample locations)

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 ATTACHMENT 2 - SCAN DATA

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Scan Avg Action Detector Detector M2350- Survey Logged Scan Location Date/Time Background Level Type ID 1 ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 PR311750 266656 12103 GS017 6/24/2022 13:02 4930 4640 5368 No 44-10 GS017 6/24/2022 13:06 5329 4640 5368 No 44-10 GS018 6/24/2022 13:10 5320 4640 5368 No 44-10 GS018 6/24/2022 13:12 5308 4640 5368 No 44-10 GS019 6/24/2022 13:14 5028 4640 5368 No 44-10 GS019 6/24/2022 13:18 5365 4640 5368 No 44-10 GS020 6/24/2022 13:22 5203 4640 5368 No 44-10 GS020 6/24/2022 13:24 5045 4640 5368 No 44-10 GS021 6/24/2022 13:25 4938 4640 5368 No 44-10 GS021 6/24/2022 13:30 5133 4640 5368 No 44-10 GS022 6/24/2022 13:34 5153 4640 5368 No 44-10 GS022 6/24/2022 13:35 5191 4640 5368 No 44-10 GS023 6/24/2022 13:36 4971 4640 5368 No 44-10 GS023 6/24/2022 13:40 5265 4640 5368 No 44-10 GS024 6/24/2022 13:45 5250 4640 5368 No 44-10 Scan of the south 11.65m GS024 6/24/2022 13:46 5359 4640 5368 No 44-10 section GS025 6/24/2022 13:47 5257 4640 5368 No 44-10 GS025 6/24/2022 13:52 5268 4640 5368 No 44-10 GS026 6/24/2022 13:57 5352 4640 5368 No 44-10 GS026 6/24/2022 13:59 5130 4640 5368 No 44-10 GS027 6/24/2022 14:01 5288 4640 5368 No 44-10 GS027 6/24/2022 14:05 4925 4640 5368 No 44-10 GS028 6/24/2022 14:09 5115 4640 5368 No 44-10 GS028 6/24/2022 14:11 5098 4640 5368 No 44-10 GS029 6/24/2022 14:12 5246 4640 5368 No 44-10 GS029 6/24/2022 14:16 5078 4640 5368 No 44-10 GS030 6/24/2022 14:20 5338 4640 5368 No 44-10 GS030 6/24/2022 14:22 5185 4640 5368 No 44-10 GS031 6/24/2022 14:28 5358 4640 5368 No 44-10 GS032 6/24/2022 14:34 5198 4640 5368 No 44-10 GS033 6/24/2022 14:41 5164 4640 5368 No 44-10 PR311750 266656 12103 GS034 6/25/2022 8:00 5623 4967 5720 No 44-10 GS035 6/25/2022 8:07 5700 4967 5720 No 44-10 Scan of the south 11.65m GS036 6/25/2022 8:14 5497 4967 5720 No 44-10 section GS037 6/25/2022 8:22 5512 4967 5720 No 44-10 GS039 6/25/2022 8:36 5318 4967 5720 No

[38]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Scan Avg Action Detector Detector M2350- Survey Logged Scan Location Date/Time Background Level Type ID 1 ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 GS040 6/25/2022 8:43 5632 4967 5720 No 44-10 GS041 6/25/2022 8:50 5605 4967 5720 No 44-10 Scan of the south 11.65m GS042 6/25/2022 8:56 5676 4967 5720 No 44-10 section GS043 6/25/2022 9:03 5568 4967 5720 No 44-10 GS044 6/25/2022 9:08 5371 4967 5720 No 44-10 GS045 6/25/2022 9:17 5033 4967 5720 No 44-10 PR311750 216188 12103 GS053 6/25/2022 9:01 5333 5120 5885 No 44-10 GS054 6/25/2022 9:10 5821 5120 5885 No Scan of the south 11.65m 44-10 GS055 6/25/2022 9:13 15869 5120 5885 Yes section 44-10 GS055 6/25/2022 9:27 5770 5120 5885 No 44-10 PR311750 266656 12103 GS038 6/27/2022 13:00 5374 4824 5566 No 44-10 GS046 6/27/2022 13:11 5386 4824 5566 No 44-10 GS047 6/27/2022 13:17 4954 4824 5566 No 44-10 GS048 6/27/2022 13:24 5209 4824 5566 No 44-10 GS049 6/27/2022 13:30 5105 4824 5566 No 44-10 GS050 6/27/2022 13:35 5236 4824 5566 No 44-10 Scan of the south 11.65m GS051 6/27/2022 13:41 5338 4824 5566 No 44-10 section GS052 6/27/2022 13:47 5502 4824 5566 No 44-10 GS053 6/27/2022 13:54 5026 4824 5566 No 44-10 GS054 6/27/2022 14:07 5036 4824 5566 No 44-10 GS055 6/27/2022 14:17 4934 4824 5566 No 44-10 GS056 6/27/2022 14:25 5019 4824 5566 No 44-10 GS057 6/27/2022 14:36 4841 4824 5566 No 44-10 PR311750 216188 12103 GS059 6/28/2022 8:20 5427 4869 5614 No 44-10 GS060 6/28/2022 8:35 5324 4869 5614 No 44-10 GS061 6/28/2022 8:50 5487 4869 5614 No 44-10 GS062 6/28/2022 9:02 5524 4869 5614 No 44-10 GS063 6/28/2022 9:25 5564 4869 5614 No 44-10 Scan of the south 11.65m GS064 6/28/2022 9:39 5450 4869 5614 No 44-10 section GS065 6/28/2022 9:48 5556 4869 5614 No 44-10 GS066 6/28/2022 9:58 5180 4869 5614 No 44-10 GS067 6/28/2022 10:25 5353 4869 5614 No 44-10 GS068 6/28/2022 13:16 6468 4869 5614 Yes 44-10 GS068 6/28/2022 13:20 5360 4869 5614 No 44-10 PR311750 266656 12103 GS012 6/28/2022 9:53 6125 5345 6127 No

[39]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Scan Avg Action Detector Detector M2350- Survey Logged Scan Location Date/Time Background Level Type ID 1 ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 GS013 6/28/2022 12:37 5607 5345 6127 No 44-10 GS014 6/28/2022 12:43 5884 5345 6127 No 44-10 GS015 6/28/2022 12:49 5893 5345 6127 No 44-10 GS016 6/28/2022 12:53 5667 5345 6127 No 44-10 GS017 6/28/2022 12:55 5557 5345 6127 No 44-10 Scan of the center 10.5m section GS018 6/28/2022 13:01 5667 5345 6127 No 44-10 GS019 6/28/2022 13:08 5845 5345 6127 No 44-10 GS020 6/28/2022 13:15 5708 5345 6127 No 44-10 GS021 6/28/2022 13:19 6080 5345 6127 No 44-10 GS022 6/28/2022 13:25 5595 5345 6127 No 44-10 GS023 6/28/2022 13:33 5558 5345 6127 No 44-10 PR311750 266656 12103 GS024 6/29/2022 8:47 5396 5046 5806 No 44-10 GS025 6/29/2022 8:52 5511 5046 5806 No 44-10 GS026 6/29/2022 9:09 5548 5046 5806 No 44-10 GS027 6/29/2022 9:17 5638 5046 5806 No 44-10 GS028 6/29/2022 9:22 5567 5046 5806 No 44-10 GS029 6/29/2022 9:36 5805 5046 5806 No 44-10 GS030 6/29/2022 9:42 5745 5046 5806 No 44-10 GS031 6/29/2022 9:48 5763 5046 5806 No 44-10 GS032 6/29/2022 10:08 5604 5046 5806 No 44-10 GS033 6/29/2022 10:14 5723 5046 5806 No 44-10 GS034 6/29/2022 13:19 5682 5046 5806 No 44-10 GS035 6/29/2022 13:27 5526 5046 5806 No 44-10 GS036 6/29/2022 13:32 5767 5046 5806 No Scan of the center 10.5m section 44-10 GS037 6/29/2022 13:40 5614 5046 5806 No 44-10 GS038 6/29/2022 13:47 5653 5046 5806 No 44-10 GS039 6/29/2022 13:55 5584 5046 5806 No 44-10 GS055 6/29/2022 14:13 5099 5046 5806 No 44-10 GS056 6/29/2022 14:19 5296 5046 5806 No 44-10 GS057 6/29/2022 14:24 5436 5046 5806 No 44-10 GS058 6/29/2022 14:31 5596 5046 5806 No 44-10 GS059 6/29/2022 14:36 5400 5046 5806 No 44-10 GS060 6/29/2022 14:43 5479 5046 5806 No 44-10 GS061 6/29/2022 14:47 5327 5046 5806 No 44-10 GS062 6/29/2022 14:56 5302 5046 5806 No 44-10 GS063 6/29/2022 15:00 5355 5046 5806 No

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Scan Avg Action Detector Detector M2350- Survey Logged Scan Location Date/Time Background Level Type ID 1 ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 GS064 6/29/2022 15:07 5154 5046 5806 No 44-10 GS065 6/29/2022 15:13 5299 5046 5806 No 44-10 Scan of the center 10.5m section GS066 6/29/2022 15:18 5642 5046 5806 No 44-10 GS067 6/29/2022 15:24 5475 5046 5806 No 44-10 GS068 6/29/2022 15:29 5658 5046 5806 No 44-10 PR311750 216188 12103 GS040 6/29/2022 9:13 8160 5450 6239 Yes 44-10 GS041 6/29/2022 9:35 7634 5450 6239 Yes 44-10 GS042 6/29/2022 9:48 7307 5450 6239 Yes 44-10 GS043 6/29/2022 10:01 6887 5450 6239 Yes 44-10 GS044 6/29/2022 10:29 6962 5450 6239 Yes 44-10 GS045 6/29/2022 10:41 6861 5450 6239 Yes 44-10 GS046 6/29/2022 13:25 5648 5450 6239 No 44-10 GS047 6/29/2022 13:37 6918 5450 6239 Yes Scan of the center 10.5m section 44-10 GS048 6/29/2022 13:54 6776 5450 6239 Yes 44-10 GS049 6/29/2022 14:02 6233 5450 6239 No 44-10 GS050 6/29/2022 14:12 5753 5450 6239 No 44-10 GS051 6/29/2022 14:28 5993 5450 6239 No 44-10 GS052 6/29/2022 14:35 5929 5450 6239 No 44-10 GS053 6/29/2022 14:45 6041 5450 6239 No 44-10 GS054 6/29/2022 14:52 6191 5450 6239 No 44-10 PR321892 304708 12103 GS007 6/29/2022 16:00 6846 5462 6252 Yes 44-10 Scan of rows 1 to 12.

44-10 Scan of the north 10.5m section All of the area of these rows is above the ASP.

44-10 The high reading in the area was latched.

44-10 PR226936 216174 12103 GS049 6/30/2022 8:59 9168 5442 6231 Yes 44-10 GS051 6/30/2022 9:24 9407 5442 6231 Yes 44-10 GS053 6/30/2022 9:43 8916 5442 6231 Yes 44-10 GS054 6/30/2022 14:43 5266 5442 6231 No 44-10 GS055 6/30/2022 14:48 5327 5442 6231 No 44-10 GS056 6/30/2022 15:02 5235 5442 6231 No 44-10 Scan of the north 10.5m section GS057 6/30/2022 15:08 5327 5442 6231 No 44-10 GS058 6/30/2022 15:12 5494 5442 6231 No 44-10 GS059 6/30/2022 15:16 5704 5442 6231 No 44-10 GS060 6/30/2022 15:20 5785 5442 6231 No 44-10 GS061 6/30/2022 15:21 5578 5442 6231 No 44-10 GS062 6/30/2022 15:25 5711 5442 6231 No

[41]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Scan Avg Action Detector Detector M2350- Survey Logged Scan Location Date/Time Background Level Type ID 1 ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 GS063 6/30/2022 15:30 6181 5442 6231 No 44-10 GS064 6/30/2022 15:42 5542 5442 6231 No 44-10 GS065 6/30/2022 15:46 6023 5442 6231 No Scan of the north 10.5m section 44-10 GS066 6/30/2022 15:47 5940 5442 6231 No 44-10 GS067 6/30/2022 15:51 5985 5442 6231 No 44-10 GS068 6/30/2022 15:56 6177 5442 6231 No 44-10 PR311756 266669 12103 GS040 6/30/2022 15:12 9182 5511 6305 Yes 44-10 GS047 6/30/2022 15:47 9426 5511 6305 Yes 44-10 Scan of rows 40 to 48.

Scan of the north 10.5m section 44-10 All of the area of these rows is above the ASP.

44-10 The high readings in the area were latched.

44-10 PR211680 129430 12103 GS013 6/30/2022 8:40 7049 5477 6298 Yes 44-10 GS016 6/30/2022 8:53 8665 5477 6298 Yes 44-10 GS021 6/30/2022 9:21 9144 5477 6298 Yes 44-10 GS031 6/30/2022 14:52 8701 5477 6298 Yes 44-10 Scan of the north 10.5m section GS035 6/30/2022 15:11 9021 5477 6298 Yes 44-10 Scan of rows 13 to 39.

44-10 All of the area of these rows is above the ASP.

44-10 The high readings in the area were latched.

44-10 RN25062 216173 12103 GS001 7/7/2022 8:53 5539 5151 5918 No 44-10 GS002 7/7/2022 9:00 5340 5151 5918 No 44-10 GS003 7/7/2022 9:06 5604 5151 5918 No 44-10 GS004 7/7/2022 9:11 5781 5151 5918 No 44-10 GS005 7/7/2022 9:15 5462 5151 5918 No 44-10 GS006 7/7/2022 9:19 5899 5151 5918 No 44-10 GS007 7/7/2022 9:23 5707 5151 5918 No Scan of the center 10.5m section 44-10 GS008 7/7/2022 9:26 5799 5151 5918 No 44-10 GS009 7/7/2022 9:33 5554 5151 5918 No 44-10 GS010 7/7/2022 9:38 5834 5151 5918 No 44-10 GS011 7/7/2022 9:44 5431 5151 5918 No 44-10 GS005 7/7/2022 9:46 8323 5151 5918 Yes 44-10 GS007 7/7/2022 9:49 7606 5151 5918 Yes 44-10 Scan of the south 10.5m section GS058 7/7/2022 9:59 5217 5151 5918 No

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FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 ATTACHMENT 3 - CONSULTATION TRIGGERS FOR RESIDENTIAL AND COMMERCIAL/INDUSTRIAL SOIL CONTAMINATION

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FSS RELEASE RECORD - REV. 1 ~

UNIT 2 PWST/SST AREA = ZIONSOLUTIONSuc=

M~SIIMioM~

SURVEY UNIT 121103 Table H.1 Consultation Triggers for Residential and Commercial/Industrial Soil Contamination (MOU Table 1)

Except for radium-226, thorium-232, or total uranium, concentrations should be aggregated using a sum of the fraction approach to determine site-specific consultation trigger concentrations. This table is based on single contaminant concentrations for residential and commercial/industrial land use when using generally accepted exposure parameters. Table users should select the appropriate column based on the site's reasonably anticipated land use.

Radionuclide Residential Soil Concentration Industrial/Commercial Soil Concentration H-3 228 nCj/g 423 oCi/g C-14 46 oCi/g 123 000 oCi/J!;

Na-22 9oCL'g 14 pCi/g S-35 19,600 pCi/g 32,200 000 oCi/2 Cl-36 6oCi/J!; 10,700 pCi/g Ca-45 13.500 pCi/J!; 3 740 000 oCi/e:

Sc-46 105 Dl i/g 169 oCiig Mn-54 69 oCi/g 112 oCi/1!:

Fe-55 269 000 oCi/g 2 210,000 oCi/g Co-57 873 oCi/g 1,420 pCi/J!;

Co-60 4 pCi/g 6 pCi/2 Ni-59 20 800 oCi/g 1,230 000 oCi/2 Ni-63 9480 oCi/g 555 000 oCi/g Sr-90+D 23 oCi/g 1.070 oCi/g Nb-94 2 pCi/g 3 pCi/g Tc-99 25 pCi/g 89,400 pCi/g 1-129 60 oCi/g 1,080 oCi/g Cs-134 16 oCi/g 26 oCi/g Cs-137+D 6 oCi/g 11 oCi/g Eu-152 4 oCi/g 7 oCi/2 Eu-154 S pCi/g 8 pCi/g lr-192 336 pCi/g 544 pCi/g Pb-210+D IS oCi/g 123 oCi/g Ra-226 S oCi/2 S oCi/g Ac-227+D 10 oCi/g 21 oCi/2 Th-228+D 15 oCi/g 25 oCi/g Th-232 5 pCi/g 5 pCi/g U-234 401 oCi/g 3 310 oCi/2 U-235+D 20 oCi/g 39 oCi/2 U-238+D 74 oCi/g 179 oCili!:

total uranium 47 m2/k2 1230 m2/kg Pu-231! 297 pCi/g 1 640 pCi/2 Pu-239 259 pCi/g 1,430 oCi/g Pu-241 40 600 oCi/g 172.000 ne i/2 Am-241 187 oCi/g 568 pCi/2 Cm-242 32 200 oCi/g 344 000 pCi/g Cm-243 35 pCi/g 67 pCi/g

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FSS RELEASE RECORD - REV. 1 ~

UNIT 2 PWST/SST AREA = ZIONSOLUTIONS;;z=

An E.-gySolutions Company SURVEY UNIT 12103 ATTACHMENT 4 - SIGN TEST

[45]

FSS RELEASE RECORD - REV. 1 ~

UNIT 2 PWST/SST AREA =ZIO SOLUTID ~ ,; -=

SURVEY UNIT 12103 m *ey Area: o. 1 000 De cription: dA.rea Grmmd Ul *e.: nit: o. 12103A De cription: T Area Cla ifi.cation: T , -pe I a Enor: 0.0. 1 Fm tio1 f the Relea5e Criterion A.cti *ity or eighted

~

Radionuclide** of Concem 1- s ign OF Sum s Co-60 C -1 4 -13 fi -63 r-90 (as applicable) 1 1.74E-02 3.39E-02 2.89E-03 3.75E-03 6.79E-06 SOF 0.058 0.9 2 +

2 0.00E+00 1.20E-02 1.52E-03 0.00E+00 3.57E-06 SOF 0.014 0.986 +

3 7.91E-03 0.00E+00 1.25E-02 1.70E-03 2.93E-05 SOF 0.022 0 .978 +

4 0.00E+00 8.66£-04 0.00E+00 0 .00E+00 0 .00E+00 SOF 0.001 0.999 +

s 0 .00E+O0 7.39E-03 6.78E-03 0.00E+00 1.59E-05 SOF 0 .01 0.986 +

6 1.64E-02 3.65E-03 6.23E-03 3.53E-03 1.46E-05 SOF 0.030 0.970 +

7 6.lSE-03 1.78E-02 4.02E-03 1.32E-03 9.43E-06 so 0 .029 0.971 +

8 1.12E-03 1.82E-03 3.77E-03 2.41E-0 8.85E-06 SOF 0.007 0.993 +

9 1.12E-02 1.26E-02 1.40E-02 2.41E-03 3.28E-05 SOF 0.0 0 0.960 +

10 4.46E-04 1.25E-02 0 .00E+00 9.61E-05 0.00E+00 SOF 0.013 0.987 +

11 2.57E-02 3.08E-04 0 .00E+00 5.53E-03 0.0OE+00 SOF 0.031 0.969 +

12 2.03E-02 6.81E-03 2.45E-03 4.38£-03 5.76E-06 SOF 0.034 0.966 +

13 2.00E-02 l .66E-02 3.20E-03 4.30E-03 7.S0E-06 SOF 0.044 0.956 +

14 3.59E-02 0.00E+00 S.90E-03 7.74E-03 1. 38E-0S SOF 0 .050 0.950 +

15 2.30E-02 0.00E+00 5.87E-03 .95E-03 1.38E-05 SOF 0.034 0.966 +

16 0 .00E+00 9.81E-03 5 . SE-03 0.00E+0O 1.28E-05 SOF 0.015 0.985 +

17 0.00E+00 7.S0E-03 6.31E-04 0.00E+00 1. 8E-06 SOF 0.008 0.992 +

Cri ical *alue (Table 1.3 of 1AR Ilv = _ _1_2__ *tUuber of Po itiYe Difference

1 The *myey unit 0 m eet ) D doe

not meet the ac eptance liteiia.

Prepared By {RE):

~

Peer Reviewed By (RE) : _ _ _ _ _ _ _ _ _ _ _ _ _/ _ _ _ _ _ _ _ _ _ _ _ _ __

(Prin ame) (Signature) (Dae)

[46]

FSS RELEASE RECORD - REV. 1 ~

UNIT 2 PWST/SST AREA = ZIONSOLUTIONS;;z=

An E.-gySolutions Company SURVEY UNIT 12103 ATTACHMENT 5 - QC SAMPLE ASSESSMENT

[47]

PSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA =ZI SOLUTIONS,-;;=.

At,( ' T SURVEY UNIT 12103 Duplicate Sample As e. ment Form LOOO T Area Ll-1210_A-F

n: ample locatio atio1 p b. on- ite HpG e standar om

1ple :\;ere Ll -

ud Ll -12103A-FI / Ll -12103A-QIG ceptable E1Tor 0.6 - 1.66 0. 1.0 19.0 1.06 1.11 y Conuuent /Com~ tiYe Action : Table -t- 1 from the QAPP i reproduced belO\V to ho\v For both ample pair . the tandard ample and QC ample did not acceptance criteria t

plit ample .

both haYe a po itiYe re ult for a gamma emitting ROC. therefore the K-

-t-0 wa. u ed i1 ti e QC 01 1paris 1 . Tl ere \ *a. a eptable a~ *ee1 e1 t Resoluti 1 when u inc K--to. *o fm1her action i ne e ary. <4

- 0 .. -2.0 8-1. 0.6-1.66 16-. 0 0. - 1.3

. 1- 00

> 00 Date:

[48]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 ATTACHMENT 6 - GRAPHICAL PRESENTATIONS

[49]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Posting Plot

[50]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 QUANTILE PLOT FOR Co-60 Survey Unit: 12103 Survey Unit Name: Unit 2 PWST/SST Area Mean: 1.19E-02 pCi/g Quantile Plot For Co-60 4.50E-02 4.00E-02 3.50E-02 Concentration (pCi/g) 3.00E-02 2.50E-02 2.00E-02 1.50E-02 1.00E-02 5.00E-03 0.00E+00 0% 20% 40% 60% 80% 100%

Percentage

[51]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 QUANTILE PLOT FOR Cs-137 Survey Unit: 12103 Survey Unit Name: Unit 2 PWST/SST Area Mean: 1.60E-02 pCi/g Quantile Plot For Cs-137 6.00E-02 5.00E-02 Concentration (pCi/g) 4.00E-02 3.00E-02 2.00E-02 1.00E-02 0.00E+00 0% 20% 40% 60% 80% 100%

Percentage

[52]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 HISTOGRAM FOR Co-60 Survey Unit: 12103 Survey Unit Name: Unit 2 PWST/SST Area Mean: 1.19E-02 pCi/g Median: 8.63E-03 pCi/g ST DEV: 0.012 Skew: 0.672 Frequency Plot For Co-60 10 9

8 7 7

Frequency 6

5 4 3 3 3 2 2 1 1 1

0 6.53E-03 1.31E-02 1.96E-02 2.61E-02 3.27E-02 3.92E-02 Upper End Value (pCi/g)

Observation Observation Upper Value Frequency %

6.53E-03 7 41%

1.31E-02 3 18%

1.96E-02 2 12%

2.61E-02 3 18%

3.27E-02 1 6%

3.92E-02 1 6%

TOTAL 17 100%

[53]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 HISTOGRAM FOR Cs-137 Survey Unit: 12103 Survey Unit Name: Unit 2 PWST/SST Area Mean: 1.60E-02 pCi/g Median: 1.37E-02 pCi/g ST DEV: 0.015 Skew: 1.156 Frequency Plot For Cs-137 12 10 Frequency 8

6 5 5 5 4

2 2

0 0 0

8.45E-03 1.69E-02 2.54E-02 3.38E-02 4.23E-02 5.07E-02 Upper End Value (pCi/g)

Observation Observation Upper Value Frequency %

8.45E-03 5 29%

1.69E-02 5 29%

2.54E-02 5 29%

3.38E-02 0 0%

4.23E-02 0 0%

5.07E-02 2 12%

TOTAL 17 100%

[54]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 Prospective and Retrospective Power Curves for Survey Unit 12103 MARSSIM Sign Test (Pro\Retrospective) Power alpha=5% n=(17\17) std.dev.=(0.3\0.016) 1 0.9 Probability of deciding true mean or median < A.L.

0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 True OpSOF Mean or Median Prospective Power Retrospective Power

[55]

FSS RELEASE RECORD - REV. 1 UNIT 2 PWST/SST AREA SURVEY UNIT 12103 ATTACHMENT 7 - GEL LABS CERTIFICATE OF ANALYSIS REPORTS

[56]

July 20, 2022 Mr. Gerry Wood Zion Solutions 100 Shiloh Blvd.

Zion, Illinois 60099 Re: Zion Solutions Work Order: 586082

Dear Mr. Wood:

GEL Laboratories, LLC (GEL) appreciates the opportunity to provide the enclosed analytical results for the sample(s) we received on July 14, 2022. This original data report has been prepared and reviewed in accordance with GELs standard operating procedures.

Test results for NELAP or ISO 17025 accredited tests are verified to meet the requirements of those standards, with any exceptions noted. The results reported relate only to the items tested and to the sample as received by the laboratory. These results may not be reproduced except as full reports without approval by the laboratory.

Copies of GELs accreditations and certifications can be found on our website at www.gel.com.

Our policy is to provide high quality, personalized analytical services to enable you to meet your analytical needs on time every time. We trust that you will find everything in order and to your satisfaction. If you have any questions, please do not hesitate to call me at (843) 556-8171, ext. 1605.

Sincerely, Marcellas PM_SIGN_HERE Knight for Zachary Worsham Project Manager Purchase Order: 702793 Enclosures Page 1 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 (843) 5568171 www.gel.com Certificate of Analysis Report for ENRG080 Zion Solutions (702793)

Client SDG: 586082 GEL Work Order: 586082 The Qualifiers in this report are defined as follows:

A quality control analyte recovery is outside of specified acceptance criteria

- Analyte is a Tracer compound

- Analyte is a surrogate compound U Analyte was analyzed for, but not detected above the MDL, MDA, MDC or LOD.

UI Gamma SpectroscopyUncertain identification Where the analytical method has been performed under NELAP certification, the analysis has met all of the requirements of the NELAC standard unless qualified on the Certificate of Analysis.

The designation ND, if present, appears in the result column when the analyte concentration is not detected above the limit as defined in the U qualifier above.

This data report has been prepared and reviewed in accordance with GEL Laboratories LLC standard operating procedures. Please direct any questions to your Project Manager, Zachary Worsham.

Reviewed by USER_SIGN_HERE Page 2 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-301-SS Project: ENRG08001 Sample ID: 586082001 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 2.38%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.253 +/-0.273 0.351 +/-0.297 pCi/g MXR1 07/18/22 1534 2290066 1 Bismuth-211 U 0.304 +/-0.173 0.397 +/-0.222 pCi/g Bismuth-212 U 0.264 +/-0.346 0.801 +/-0.367 pCi/g Bismuth-214 0.215 +/-0.118 0.184 +/-0.154 pCi/g Cesium-134 U 0.0587 +/-0.0359 0.0710 +/-0.0449 0.173 pCi/g Cesium-137 U 0.0105 +/-0.0297 0.0633 +/-0.0301 0.363 pCi/g Cobalt-60 U 0.0190 +/-0.0289 0.0703 +/-0.0302 0.109 pCi/g Europium-152 U 0.0487 +/-0.0699 0.141 +/-0.0734 0.869 pCi/g Europium-154 U 0.0315 +/-0.0846 0.194 +/-0.0858 0.799 pCi/g Lead-212 0.222 +/-0.101 0.0814 +/-0.103 pCi/g Lead-214 0.153 +/-0.184 0.0949 +/-0.184 pCi/g Potassium-40 11.7 +/-1.44 0.569 +/-1.81 pCi/g Thallium-208 UI 0.000 +/-0.0674 0.0559 +/-0.0676 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 3 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-301-SS Project: ENRG08001 Sample ID: 586082001 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 4 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-302-SS Project: ENRG08001 Sample ID: 586082002 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 2.51%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.126 +/-0.164 0.291 +/-0.174 pCi/g MXR1 07/18/22 1536 2290066 1 Bismuth-211 U 0.125 +/-0.467 0.219 +/-0.475 pCi/g Bismuth-212 U 0.165 +/-0.322 0.664 +/-0.330 pCi/g Bismuth-214 0.192 +/-0.0818 0.150 +/-0.120 pCi/g Cesium-134 U 0.0208 +/-0.0408 0.0550 +/-0.0419 0.173 pCi/g Cesium-137 U 0.00553 +/-0.0314 0.0691 +/-0.0315 0.363 pCi/g Cobalt-60 U -0.0231 +/-0.0227 0.0323 +/-0.0250 0.109 pCi/g Europium-152 U -0.00589 +/-0.0507 0.102 +/-0.0508 0.869 pCi/g Europium-154 U 0.0926 +/-0.0849 0.201 +/-0.0949 0.799 pCi/g Lead-212 0.195 +/-0.0940 0.0688 +/-0.0954 pCi/g Lead-214 0.307 +/-0.0907 0.151 +/-0.0945 pCi/g Potassium-40 10.3 +/-1.25 0.475 +/-1.56 pCi/g Thallium-208 0.0529 +/-0.0458 0.0398 +/-0.0460 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 5 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-302-SS Project: ENRG08001 Sample ID: 586082002 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 6 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-303-SS Project: ENRG08001 Sample ID: 586082003 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 1.58%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 UI 0.000 +/-0.186 0.356 +/-0.277 pCi/g MXR1 07/18/22 1537 2290066 1 Bismuth-211 0.892 +/-0.346 0.283 +/-0.354 pCi/g Bismuth-212 U 0.233 +/-0.359 0.803 +/-0.375 pCi/g Bismuth-214 0.212 +/-0.0964 0.169 +/-0.137 pCi/g Cesium-134 U -0.0199 +/-0.0284 0.0515 +/-0.0298 0.173 pCi/g Cesium-137 U 0.0453 +/-0.0492 0.0545 +/-0.0494 0.363 pCi/g Cobalt-60 U 0.00863 +/-0.0220 0.0527 +/-0.0223 0.109 pCi/g Europium-152 U -0.0154 +/-0.0602 0.116 +/-0.0606 0.869 pCi/g Europium-154 U -0.0136 +/-0.0803 0.160 +/-0.0806 0.799 pCi/g Lead-212 0.278 +/-0.0835 0.0707 +/-0.0863 pCi/g Lead-214 0.324 +/-0.126 0.191 +/-0.194 pCi/g Potassium-40 11.0 +/-1.31 0.372 +/-1.61 pCi/g Thallium-208 0.0635 +/-0.0567 0.0446 +/-0.0570 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 7 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-303-SS Project: ENRG08001 Sample ID: 586082003 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 8 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-304-SS Project: ENRG08001 Sample ID: 586082004 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 1.32%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.451 +/-0.209 0.138 +/-0.213 pCi/g MXR1 07/18/22 1537 2290066 1 Bismuth-211 U 0.0771 +/-0.515 0.222 +/-0.522 pCi/g Bismuth-212 U -0.0824 +/-0.339 0.664 +/-0.341 pCi/g Bismuth-214 0.266 +/-0.103 0.175 +/-0.160 pCi/g Cesium-134 U 0.00150 +/-0.0256 0.0530 +/-0.0256 0.173 pCi/g Cesium-137 U -0.0216 +/-0.0249 0.0395 +/-0.0268 0.363 pCi/g Cobalt-60 U -0.00883 +/-0.0279 0.0518 +/-0.0282 0.109 pCi/g Europium-152 U -0.0238 +/-0.0600 0.116 +/-0.0610 0.869 pCi/g Europium-154 U -0.0151 +/-0.105 0.196 +/-0.105 0.799 pCi/g Lead-212 0.276 +/-0.0972 0.0673 +/-0.0999 pCi/g Lead-214 0.307 +/-0.114 0.163 +/-0.117 pCi/g Potassium-40 9.93 +/-1.22 0.456 +/-1.52 pCi/g Thallium-208 0.111 +/-0.0601 0.0416 +/-0.0609 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 9 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-304-SS Project: ENRG08001 Sample ID: 586082004 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 10 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-305-SS Project: ENRG08001 Sample ID: 586082005 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 2.32%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.446 +/-0.153 0.146 +/-0.160 pCi/g MXR1 07/18/22 1537 2290066 1 Bismuth-211 UI 0.000 +/-0.519 0.200 +/-0.525 pCi/g Bismuth-212 U 0.0783 +/-0.350 0.588 +/-0.352 pCi/g Bismuth-214 0.168 +/-0.0977 0.0738 +/-0.0989 pCi/g Cesium-134 U 0.0128 +/-0.0240 0.0473 +/-0.0247 0.173 pCi/g Cesium-137 U 0.0246 +/-0.0256 0.0528 +/-0.0280 0.363 pCi/g Cobalt-60 U -0.00279 +/-0.0281 0.0545 +/-0.0282 0.109 pCi/g Europium-152 U -0.0119 +/-0.0586 0.0962 +/-0.0588 0.869 pCi/g Europium-154 U 0.0521 +/-0.0747 0.157 +/-0.0785 0.799 pCi/g Lead-212 0.300 +/-0.0758 0.0563 +/-0.0795 pCi/g Lead-214 0.405 +/-0.111 0.156 +/-0.115 pCi/g Potassium-40 10.2 +/-0.996 0.451 +/-1.35 pCi/g Thallium-208 0.0593 +/-0.0489 0.0365 +/-0.0492 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 11 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-305-SS Project: ENRG08001 Sample ID: 586082005 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 12 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-305-SB Project: ENRG08001 Sample ID: 586082006 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 4.41%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.309 +/-0.180 0.342 +/-0.229 pCi/g MXR1 07/18/22 1538 2290066 1 Bismuth-211 U 0.138 +/-0.596 0.274 +/-0.598 pCi/g Bismuth-212 U 0.197 +/-0.381 0.800 +/-0.392 pCi/g Bismuth-214 U 0.102 +/-0.107 0.181 +/-0.117 pCi/g Cesium-134 UI 0.000 +/-0.0375 0.0607 +/-0.0528 0.173 pCi/g Cesium-137 U 0.0423 +/-0.0481 0.0536 +/-0.0483 0.363 pCi/g Cobalt-60 U 0.0219 +/-0.0252 0.0633 +/-0.0271 0.109 pCi/g Europium-152 U 0.0417 +/-0.0592 0.130 +/-0.0622 0.869 pCi/g Europium-154 U 0.00102 +/-0.0681 0.147 +/-0.0681 0.799 pCi/g Lead-212 0.164 +/-0.100 0.0784 +/-0.101 pCi/g Lead-214 0.229 +/-0.120 0.170 +/-0.121 pCi/g Potassium-40 9.09 +/-1.19 0.414 +/-1.46 pCi/g Thallium-208 0.0828 +/-0.0624 0.0421 +/-0.0629 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 13 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-305-SB Project: ENRG08001 Sample ID: 586082006 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 14 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-306-SS Project: ENRG08001 Sample ID: 586082007 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 2.01%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.417 +/-0.179 0.193 +/-0.183 pCi/g MXR1 07/18/22 1538 2290066 1 Bismuth-211 U 0.176 +/-0.541 0.223 +/-0.544 pCi/g Bismuth-212 U 0.407 +/-0.279 0.599 +/-0.282 pCi/g Bismuth-214 0.193 +/-0.0909 0.0723 +/-0.0927 pCi/g Cesium-134 U 0.00632 +/-0.0233 0.0505 +/-0.0235 0.173 pCi/g Cesium-137 U 0.0226 +/-0.0309 0.0640 +/-0.0326 0.363 pCi/g Cobalt-60 U 0.0179 +/-0.0285 0.0643 +/-0.0297 0.109 pCi/g Europium-152 U 0.00836 +/-0.0619 0.123 +/-0.0621 0.869 pCi/g Europium-154 U 0.0148 +/-0.0640 0.141 +/-0.0644 0.799 pCi/g Lead-212 0.287 +/-0.0782 0.0639 +/-0.0816 pCi/g Lead-214 0.255 +/-0.0923 0.156 +/-0.0947 pCi/g Potassium-40 10.8 +/-1.23 0.504 +/-1.56 pCi/g Thallium-208 0.120 +/-0.0379 0.0339 +/-0.0395 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 15 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-306-SS Project: ENRG08001 Sample ID: 586082007 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 16 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-307-SS Project: ENRG08001 Sample ID: 586082008 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: .346%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.237 +/-0.139 0.269 +/-0.177 pCi/g MXR1 07/18/22 1538 2290066 1 Bismuth-211 UI 0.000 +/-0.317 0.386 +/-0.446 pCi/g Bismuth-212 0.928 +/-0.513 0.692 +/-0.519 pCi/g Bismuth-214 0.161 +/-0.118 0.159 +/-0.139 pCi/g Cesium-134 U 0.0308 +/-0.0236 0.0615 +/-0.0275 0.173 pCi/g Cesium-137 U 0.0146 +/-0.0240 0.0533 +/-0.0249 0.363 pCi/g Cobalt-60 U 0.00671 +/-0.0246 0.0564 +/-0.0248 0.109 pCi/g Europium-152 U -0.0228 +/-0.0546 0.108 +/-0.0556 0.869 pCi/g Europium-154 U 0.0214 +/-0.0905 0.193 +/-0.0910 0.799 pCi/g Lead-212 0.240 +/-0.0972 0.0559 +/-0.0994 pCi/g Lead-214 0.248 +/-0.115 0.0786 +/-0.117 pCi/g Potassium-40 10.3 +/-1.35 0.313 +/-1.67 pCi/g Thallium-208 U 0.0467 +/-0.0498 0.0469 +/-0.0499 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 17 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-307-SS Project: ENRG08001 Sample ID: 586082008 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 18 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-308-SS Project: ENRG08001 Sample ID: 586082009 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 1.47%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.363 +/-0.162 0.306 +/-0.233 pCi/g MXR1 07/18/22 1539 2290066 1 Bismuth-211 U 0.0764 +/-0.585 0.206 +/-0.590 pCi/g Bismuth-212 U 0.164 +/-0.341 0.710 +/-0.349 pCi/g Bismuth-214 0.232 +/-0.0769 0.143 +/-0.131 pCi/g Cesium-134 U 0.00315 +/-0.0227 0.0488 +/-0.0227 0.173 pCi/g Cesium-137 U 0.0137 +/-0.0263 0.0548 +/-0.0270 0.363 pCi/g Cobalt-60 U 0.00122 +/-0.0309 0.0617 +/-0.0309 0.109 pCi/g Europium-152 U 0.0210 +/-0.0556 0.111 +/-0.0564 0.869 pCi/g Europium-154 U -0.00657 +/-0.0767 0.153 +/-0.0768 0.799 pCi/g Lead-212 0.158 +/-0.0755 0.0588 +/-0.0766 pCi/g Lead-214 0.264 +/-0.102 0.156 +/-0.104 pCi/g Potassium-40 11.3 +/-1.24 0.342 +/-1.63 pCi/g Thallium-208 0.0631 +/-0.0524 0.0470 +/-0.0527 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 19 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-308-SS Project: ENRG08001 Sample ID: 586082009 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 20 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FQGS-308-SS Project: ENRG08001 Sample ID: 586082010 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: .881%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.223 +/-0.144 0.275 +/-0.177 pCi/g MXR1 07/18/22 1539 2290066 1 Bismuth-211 UI 0.000 +/-0.273 0.366 +/-0.389 pCi/g Bismuth-212 U 0.162 +/-0.260 0.581 +/-0.271 pCi/g Bismuth-214 0.120 +/-0.114 0.0872 +/-0.115 pCi/g Cesium-134 U 0.00290 +/-0.0236 0.0477 +/-0.0236 0.173 pCi/g Cesium-137 U 0.0137 +/-0.0198 0.0443 +/-0.0207 0.363 pCi/g Cobalt-60 U 0.00716 +/-0.0173 0.0424 +/-0.0176 0.109 pCi/g Europium-152 U -0.00900 +/-0.0482 0.0974 +/-0.0484 0.869 pCi/g Europium-154 U -0.0266 +/-0.0584 0.0940 +/-0.0597 0.799 pCi/g Lead-212 0.165 +/-0.0669 0.0571 +/-0.0683 pCi/g Lead-214 0.219 +/-0.0992 0.0736 +/-0.101 pCi/g Potassium-40 10.5 +/-1.12 0.342 +/-1.50 pCi/g Thallium-208 0.0497 +/-0.0379 0.0429 +/-0.0381 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 21 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FQGS-308-SS Project: ENRG08001 Sample ID: 586082010 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 22 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-309-SS Project: ENRG08001 Sample ID: 586082011 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 1.57%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.495 +/-0.194 0.189 +/-0.200 pCi/g MXR1 07/18/22 1539 2290066 1 Bismuth-211 UI 0.000 +/-0.352 0.459 +/-0.548 pCi/g Bismuth-212 U 0.354 +/-0.452 0.951 +/-0.481 pCi/g Bismuth-214 0.367 +/-0.125 0.0857 +/-0.129 pCi/g Cesium-134 U 0.0219 +/-0.0370 0.0614 +/-0.0383 0.173 pCi/g Cesium-137 U 0.0507 +/-0.0289 0.0669 +/-0.0292 0.363 pCi/g Cobalt-60 U 0.0122 +/-0.0308 0.0686 +/-0.0313 0.109 pCi/g Europium-152 U -0.0393 +/-0.0630 0.117 +/-0.0655 0.869 pCi/g Europium-154 U 0.0329 +/-0.0892 0.196 +/-0.0904 0.799 pCi/g Lead-212 0.352 +/-0.0910 0.0726 +/-0.0957 pCi/g Lead-214 0.333 +/-0.128 0.106 +/-0.131 pCi/g Potassium-40 10.4 +/-1.31 0.500 +/-1.65 pCi/g Thallium-208 0.123 +/-0.0603 0.0490 +/-0.0612 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 23 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-309-SS Project: ENRG08001 Sample ID: 586082011 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 24 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-310-SS Project: ENRG08001 Sample ID: 586082012 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 1.28%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.122 +/-0.123 0.271 +/-0.136 pCi/g MXR1 07/18/22 1707 2290066 1 Bismuth-211 UI 0.000 +/-0.682 0.235 +/-0.686 pCi/g Bismuth-212 U 0.361 +/-0.401 0.877 +/-0.434 pCi/g Bismuth-214 0.289 +/-0.110 0.0711 +/-0.113 pCi/g Cesium-134 U 0.0216 +/-0.0237 0.0507 +/-0.0257 0.173 pCi/g Cesium-137 U -0.00419 +/-0.0237 0.0439 +/-0.0238 0.363 pCi/g Cobalt-60 U 0.000487 +/-0.0234 0.0485 +/-0.0234 0.109 pCi/g Europium-152 U 0.0191 +/-0.0537 0.114 +/-0.0544 0.869 pCi/g Europium-154 U 0.00261 +/-0.0801 0.161 +/-0.0801 0.799 pCi/g Lead-212 0.328 +/-0.0771 0.0697 +/-0.0818 pCi/g Lead-214 0.347 +/-0.124 0.171 +/-0.128 pCi/g Potassium-40 10.5 +/-1.23 0.447 +/-1.56 pCi/g Thallium-208 U 0.0428 +/-0.0667 0.0482 +/-0.0668 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 25 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-310-SS Project: ENRG08001 Sample ID: 586082012 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 26 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-311-SS Project: ENRG08001 Sample ID: 586082013 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 2.76%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.322 +/-0.156 0.149 +/-0.159 pCi/g MXR1 07/18/22 1707 2290066 1 Bismuth-211 UI 0.000 +/-0.504 0.205 +/-0.511 pCi/g Bismuth-212 UI 0.000 +/-0.411 0.485 +/-0.424 pCi/g Bismuth-214 0.282 +/-0.0895 0.0815 +/-0.0932 pCi/g Cesium-134 U 0.000533 +/-0.0247 0.0488 +/-0.0247 0.173 pCi/g Cesium-137 UI 0.000 +/-0.0537 0.0462 +/-0.0540 0.363 pCi/g Cobalt-60 U 0.0280 +/-0.0284 0.0626 +/-0.0312 0.109 pCi/g Europium-152 U -0.00244 +/-0.0583 0.0982 +/-0.0583 0.869 pCi/g Europium-154 U 0.000155 +/-0.0647 0.126 +/-0.0647 0.799 pCi/g Lead-212 0.291 +/-0.0973 0.0661 +/-0.100 pCi/g Lead-214 0.390 +/-0.0881 0.153 +/-0.0936 pCi/g Potassium-40 10.4 +/-1.10 0.479 +/-1.44 pCi/g Thallium-208 0.0789 +/-0.0410 0.0426 +/-0.0416 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 27 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-311-SS Project: ENRG08001 Sample ID: 586082013 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 28 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-312-SS Project: ENRG08001 Sample ID: 586082014 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 2.37%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.150 +/-0.217 0.183 +/-0.217 pCi/g MXR1 07/18/22 1708 2290066 1 Bismuth-211 UI 0.000 +/-0.333 0.479 +/-0.564 pCi/g Bismuth-212 U 0.213 +/-0.297 0.668 +/-0.313 pCi/g Bismuth-214 0.253 +/-0.106 0.0952 +/-0.108 pCi/g Cesium-134 U 0.0118 +/-0.0245 0.0532 +/-0.0250 0.173 pCi/g Cesium-137 U 0.00891 +/-0.0248 0.0515 +/-0.0252 0.363 pCi/g Cobalt-60 U 0.0222 +/-0.0273 0.0652 +/-0.0291 0.109 pCi/g Europium-152 U -0.00571 +/-0.0636 0.116 +/-0.0637 0.869 pCi/g Europium-154 U 0.00881 +/-0.0788 0.167 +/-0.0789 0.799 pCi/g Lead-212 0.239 +/-0.0828 0.0845 +/-0.0852 pCi/g Lead-214 0.360 +/-0.121 0.0917 +/-0.125 pCi/g Potassium-40 9.49 +/-1.17 0.331 +/-1.46 pCi/g Thallium-208 0.112 +/-0.0383 0.0331 +/-0.0396 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 29 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-312-SS Project: ENRG08001 Sample ID: 586082014 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 30 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-313-SS Project: ENRG08001 Sample ID: 586082015 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 4.29%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.220 +/-0.159 0.143 +/-0.161 pCi/g MXR1 07/18/22 1708 2290066 1 Bismuth-211 U 0.0979 +/-0.630 0.219 +/-0.634 pCi/g Bismuth-212 U 0.0945 +/-0.296 0.640 +/-0.299 pCi/g Bismuth-214 0.182 +/-0.0894 0.149 +/-0.123 pCi/g Cesium-134 U 0.0288 +/-0.0262 0.0615 +/-0.0294 0.173 pCi/g Cesium-137 U 0.0116 +/-0.0254 0.0529 +/-0.0259 0.363 pCi/g Cobalt-60 U 0.0218 +/-0.0220 0.0567 +/-0.0242 0.109 pCi/g Europium-152 U -0.0539 +/-0.0523 0.0880 +/-0.0579 0.869 pCi/g Europium-154 U -0.0325 +/-0.0821 0.152 +/-0.0834 0.799 pCi/g Lead-212 0.339 +/-0.0760 0.0574 +/-0.0808 pCi/g Lead-214 0.266 +/-0.129 0.159 +/-0.131 pCi/g Potassium-40 10.7 +/-1.19 0.263 +/-1.53 pCi/g Thallium-208 0.0878 +/-0.0485 0.0390 +/-0.0493 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 31 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-313-SS Project: ENRG08001 Sample ID: 586082015 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 32 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-314-SS Project: ENRG08001 Sample ID: 586082016 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 2.1%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.434 +/-0.241 0.378 +/-0.313 pCi/g MXR1 07/18/22 1709 2290066 1 Bismuth-211 UI 0.000 +/-0.680 0.274 +/-0.689 pCi/g Bismuth-212 U 0.490 +/-0.506 1.07 +/-0.553 pCi/g Bismuth-214 0.334 +/-0.122 0.111 +/-0.125 pCi/g Cesium-134 U -0.00638 +/-0.0287 0.0575 +/-0.0288 0.173 pCi/g Cesium-137 U 0.0214 +/-0.0288 0.0630 +/-0.0304 0.363 pCi/g Cobalt-60 U 0.0392 +/-0.0322 0.0821 +/-0.0369 0.109 pCi/g Europium-152 U 0.0282 +/-0.0621 0.126 +/-0.0634 0.869 pCi/g Europium-154 U -0.0517 +/-0.116 0.206 +/-0.118 0.799 pCi/g Lead-212 0.289 +/-0.111 0.0893 +/-0.113 pCi/g Lead-214 0.569 +/-0.131 0.219 +/-0.139 pCi/g Potassium-40 12.2 +/-1.44 0.327 +/-1.86 pCi/g Thallium-208 0.0729 +/-0.0478 0.0583 +/-0.0483 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 33 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-314-SS Project: ENRG08001 Sample ID: 586082016 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 34 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-315-SS Project: ENRG08001 Sample ID: 586082017 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 2.37%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 UI 0.000 +/-0.297 0.153 +/-0.298 pCi/g MXR1 07/18/22 1709 2290066 1 Bismuth-211 UI 0.000 +/-0.708 0.242 +/-0.712 pCi/g Bismuth-212 0.726 +/-0.540 0.631 +/-0.545 pCi/g Bismuth-214 0.297 +/-0.110 0.0965 +/-0.113 pCi/g Cesium-134 U -0.0150 +/-0.0309 0.0501 +/-0.0317 0.173 pCi/g Cesium-137 U 0.0213 +/-0.0282 0.0601 +/-0.0298 0.363 pCi/g Cobalt-60 U 0.0251 +/-0.0437 0.0707 +/-0.0452 0.109 pCi/g Europium-152 U -0.0291 +/-0.0605 0.116 +/-0.0620 0.869 pCi/g Europium-154 U 0.00221 +/-0.102 0.200 +/-0.102 0.799 pCi/g Lead-212 0.438 +/-0.0953 0.0701 +/-0.102 pCi/g Lead-214 0.338 +/-0.136 0.185 +/-0.138 pCi/g Potassium-40 12.6 +/-1.47 0.515 +/-1.89 pCi/g Thallium-208 0.104 +/-0.0776 0.0411 +/-0.0781 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 35 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-315-SS Project: ENRG08001 Sample ID: 586082017 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 36 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-316-SS Project: ENRG08001 Sample ID: 586082018 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 1.04%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.147 +/-0.143 0.126 +/-0.143 pCi/g MXR1 07/18/22 1709 2290066 1 Bismuth-211 U 0.0197 +/-0.533 0.230 +/-0.537 pCi/g Bismuth-212 UI 0.000 +/-0.420 0.451 +/-0.427 pCi/g Bismuth-214 0.129 +/-0.110 0.0842 +/-0.110 pCi/g Cesium-134 U 0.0170 +/-0.0237 0.0527 +/-0.0250 0.173 pCi/g Cesium-137 U 0.0198 +/-0.0237 0.0523 +/-0.0254 0.363 pCi/g Cobalt-60 U -0.00238 +/-0.0184 0.0393 +/-0.0184 0.109 pCi/g Europium-152 U -0.00468 +/-0.0585 0.118 +/-0.0586 0.869 pCi/g Europium-154 U -0.0140 +/-0.0705 0.141 +/-0.0708 0.799 pCi/g Lead-212 0.224 +/-0.0631 0.0612 +/-0.0656 pCi/g Lead-214 0.205 +/-0.112 0.139 +/-0.113 pCi/g Potassium-40 10.4 +/-1.15 0.301 +/-1.50 pCi/g Thallium-208 0.0850 +/-0.0484 0.0364 +/-0.0490 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 37 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-316-SS Project: ENRG08001 Sample ID: 586082018 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 38 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-316-SB Project: ENRG08001 Sample ID: 586082019 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 3%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.0777 +/-0.116 0.246 +/-0.121 pCi/g MXR1 07/18/22 1710 2290066 1 Bismuth-211 UI 0.000 +/-0.226 0.363 +/-0.343 pCi/g Bismuth-212 U 0.229 +/-0.369 0.468 +/-0.370 pCi/g Bismuth-214 0.131 +/-0.0918 0.130 +/-0.110 pCi/g Cesium-134 U 0.0248 +/-0.0337 0.0561 +/-0.0356 0.173 pCi/g Cesium-137 U 0.0261 +/-0.0228 0.0525 +/-0.0257 0.363 pCi/g Cobalt-60 U 0.0146 +/-0.0162 0.0451 +/-0.0175 0.109 pCi/g Europium-152 U 0.0987 +/-0.0871 0.103 +/-0.0982 0.869 pCi/g Europium-154 U 0.0415 +/-0.0843 0.184 +/-0.0864 0.799 pCi/g Lead-212 0.279 +/-0.0688 0.0460 +/-0.0726 pCi/g Lead-214 0.204 +/-0.0822 0.0790 +/-0.0839 pCi/g Potassium-40 9.61 +/-1.12 0.307 +/-1.44 pCi/g Thallium-208 0.0664 +/-0.0376 0.0337 +/-0.0381 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 39 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-316-SB Project: ENRG08001 Sample ID: 586082019 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 40 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-317-SS Project: ENRG08001 Sample ID: 586082020 Client ID: ENRG080 Matrix: Soil Collect Date: 05-JUL-22 Receive Date: 14-JUL-22 Collector: Client Moisture: 1.79%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.330 +/-0.293 0.480 +/-0.330 pCi/g MXR1 07/18/22 1710 2290066 1 Bismuth-211 U 0.454 +/-0.411 0.525 +/-0.461 pCi/g Bismuth-212 U -0.0501 +/-0.519 1.01 +/-0.520 pCi/g Bismuth-214 0.318 +/-0.131 0.119 +/-0.134 pCi/g Cesium-134 U 0.0130 +/-0.0445 0.0923 +/-0.0449 0.173 pCi/g Cesium-137 U 0.00229 +/-0.0425 0.0845 +/-0.0425 0.363 pCi/g Cobalt-60 U -0.0231 +/-0.0523 0.0983 +/-0.0534 0.109 pCi/g Europium-152 U -0.0439 +/-0.0824 0.158 +/-0.0849 0.869 pCi/g Europium-154 U -0.00275 +/-0.129 0.265 +/-0.129 0.799 pCi/g Lead-212 UI 0.000 +/-0.109 0.170 +/-0.167 pCi/g Lead-214 0.165 +/-0.149 0.121 +/-0.150 pCi/g Potassium-40 12.3 +/-1.71 0.460 +/-2.04 pCi/g Thallium-208 U 0.0461 +/-0.0668 0.0710 +/-0.0669 pCi/g The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/14/22 1903 2289906 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Page 41 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: July 20, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FSGS-317-SS Project: ENRG08001 Sample ID: 586082020 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 42 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Report Date: July 20, 2022 Client : Zion Solutions Page 1 of 4 100 Shiloh Blvd.

Zion, Illinois

Contact:

Mr. Gerry Wood Workorder: 586082 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2290066 QC1205139813 586082001 DUP Actinium-228 U 0.253 U 0.173 pCi/g 0 N/A MXR1 07/18/22 17:11 Uncert: +/-0.273 +/-0.177 TPU: +/-0.297 +/-0.194 Bismuth-211 U 0.304 U 0.185 pCi/g 0 N/A Uncert: +/-0.173 +/-0.634 TPU: +/-0.222 +/-0.636 Bismuth-212 U 0.264 U -0.00336 pCi/g 0 N/A Uncert: +/-0.346 +/-0.498 TPU: +/-0.367 +/-0.498 Bismuth-214 0.215 U 0.129 pCi/g 6.03 (0% - 100%)

Uncert: +/-0.118 +/-0.117 TPU: +/-0.154 +/-0.131 Cesium-134 U 0.0587 U 0.0398 pCi/g 0 N/A Uncert: +/-0.0359 +/-0.0351 TPU: +/-0.0449 +/-0.0395 Cesium-137 U 0.0105 U -0.0101 pCi/g 0 N/A Uncert: +/-0.0297 +/-0.0376 TPU: +/-0.0301 +/-0.0378 Cobalt-60 U 0.0190 U 0.0165 pCi/g 0 N/A Uncert: +/-0.0289 +/-0.0433 TPU: +/-0.0302 +/-0.0440 Europium-152 U 0.0487 U 0.0164 pCi/g 0 N/A Uncert: +/-0.0699 +/-0.0910 TPU: +/-0.0734 +/-0.0913 Europium-154 U 0.0315 U 0.0531 pCi/g 0 N/A Uncert: +/-0.0846 +/-0.110 TPU: +/-0.0858 +/-0.113 Lead-212 0.222 0.135 pCi/g 48.9 (0% - 100%)

Uncert: +/-0.101 +/-0.120 TPU: +/-0.103 +/-0.120 Lead-214 0.153 0.216 pCi/g 34.2 (0% - 100%)

Uncert: +/-0.184 +/-0.121 TPU: +/-0.184 +/-0.123 Potassium-40 11.7 8.29 pCi/g 33.7 * (0%-20%)

Uncert: +/-1.44 +/-1.76 TPU: +/-1.81 +/-1.91 Thallium-208 UI 0.000 U 0.0459 pCi/g 0 N/A Uncert: +/-0.0674 +/-0.0718 TPU: +/-0.0676 +/-0.0719 QC1205139814 LCS Americium-241 485 583 pCi/g 120 (75%-125%) MXR1 07/18/22 17:11 Page 43 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 586082 Page 2 of 4 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2290066 Uncert: +/-17.7 TPU: +/-72.6 Actinium-228 U -0.311 pCi/g Uncert: +/-2.33 TPU: +/-2.34 Bismuth-211 U -0.256 pCi/g Uncert: +/-2.65 TPU: +/-2.65 Bismuth-212 U -0.327 pCi/g Uncert: +/-5.60 TPU: +/-5.60 Bismuth-214 U -0.281 pCi/g Uncert: +/-0.859 TPU: +/-0.869 Cesium-134 U 0.165 pCi/g Uncert: +/-0.485 TPU: +/-0.491 Cesium-137 157 151 pCi/g 96.4 (75%-125%)

Uncert: +/-3.31 TPU: +/-12.6 Cobalt-60 74.9 75.2 pCi/g 100 (75%-125%)

Uncert: +/-2.85 TPU: +/-7.88 Europium-152 U -0.184 pCi/g Uncert: +/-1.29 TPU: +/-1.30 Europium-154 U -0.564 pCi/g Uncert: +/-0.900 TPU: +/-0.937 Lead-212 U 0.0864 pCi/g Uncert: +/-0.748 TPU: +/-0.749 Lead-214 U -0.169 pCi/g Uncert: +/-0.986 TPU: +/-0.989 Potassium-40 U -0.509 pCi/g Uncert: +/-1.69 TPU: +/-1.71 Thallium-208 U 0.218 pCi/g Uncert: +/-0.423 TPU: +/-0.435 QC1205139812 MB Actinium-228 U -0.0874 pCi/g MXR1 07/18/2217:10 Uncert: +/-0.0879 TPU: +/-0.0967 Bismuth-211 U 0.0590 pCi/g Page 44 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 586082 Page 3 of 4 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2290066 Uncert: +/-0.112 TPU: +/-0.115 Bismuth-212 U -0.0279 pCi/g Uncert: +/-0.257 TPU: +/-0.257 Bismuth-214 U -0.0259 pCi/g Uncert: +/-0.0399 TPU: +/-0.0416 Cesium-134 U -0.00948 pCi/g Uncert: +/-0.0237 TPU: +/-0.0241 Cesium-137 U 0.000805 pCi/g Uncert: +/-0.0189 TPU: +/-0.0189 Cobalt-60 U 0.00305 pCi/g Uncert: +/-0.0221 TPU: +/-0.0221 Europium-152 U -0.0584 pCi/g Uncert: +/-0.0545 TPU: +/-0.0607 Europium-154 U 0.0105 pCi/g Uncert: +/-0.0353 TPU: +/-0.0356 Lead-212 U -0.000278 pCi/g Uncert: +/-0.0334 TPU: +/-0.0334 Lead-214 U 0.0280 pCi/g Uncert: +/-0.0376 TPU: +/-0.0397 Potassium-40 U -0.101 pCi/g Uncert: +/-0.263 TPU: +/-0.267 Thallium-208 U -0.0262 pCi/g Uncert: +/-0.0214 TPU: +/-0.0246 Notes:

TPU and Counting Uncertainty are calculated at the 95% confidence level (1.96-sigma).

The Qualifiers in this report are defined as follows:

- Analyte is a Tracer compound

< Result is less than value reported

> Result is greater than value reported BD Results are either below the MDC or tracer recovery is low FA Failed analysis.

H Analytical holding time was exceeded Page 45 of 54 SDG: 586082

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 586082 Page 4 of 4 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time J See case narrative for an explanation J Value is estimated K Analyte present. Reported value may be biased high. Actual value is expected to be lower.

L Analyte present. Reported value may be biased low. Actual value is expected to be higher.

M M if above MDC and less than LLD M REMP Result > MDC/CL and < RDL N/A RPD or %Recovery limits do not apply.

N1 See case narrative ND Analyte concentration is not detected above the detection limit NJ Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Q One or more quality control criteria have not been met. Refer to the applicable narrative or DER.

R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, MDC or LOD.

UI Gamma Spectroscopy--Uncertain identification UJ Gamma Spectroscopy--Uncertain identification UL Not considered detected. The associated number is the reported concentration, which may be inaccurate due to a low bias.

X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y Other specific qualifiers were required to properly define the results. Consult case narrative.

^ RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL. Qualifier Not Applicable for Radiochemistry.

h Preparation or preservation holding time was exceeded N/A indicates that spike recovery limits do not apply when sample concentration exceeds spike conc. by a factor of 4 or more or %RPD not applicable.

- Indicates analyte is a surrogate/tracer compound.

^ The Relative Percent Difference (RPD) obtained from the sample duplicate (DUP) is evaluated against the acceptence criteria when the sample is greater than five times (5X) the contract required detection limit (RL). In cases where either the sample or duplicate value is less than 5X the RL, a control limit of +/- the RL is used to evaluate the DUP result.

For PS, PSD, and SDILT results, the values listed are the measured amounts, not final concentrations.

Where the analytical method has been performed under NELAP certification, the analysis has met all of the requirements of the NELAC standard unless qualified on the QC Summary.

Page 46 of 54 SDG: 586082

Page 47 of 54 SDG: 586082 ~

/

zs.-,vM-131 ZIONSOLUTJ0NSuc MEMttt ~Cool~y Revision 0 Information Use Sample ID Matrix Sample Type

.Atta_i;_lt_me_nt J -- Cb.ain-qf.C_us1._09_y forrn Sample Cornainer Sample Dal<: Sample Analysis Type

~86 Oft-Preservative Remarks Vol Unit Type Qty Time Ll-l2!03A-FSGS-30!-SS SOIL SOIL 850.55 gmms NIA I 07105/2022 0724 Gamma Spee NIA See comments L1-12l03A-FSGS-302-SS SOIL SOIL 850.55 gmms NIA I 07/0512022 0727 Gamma Spee NIA See comments Ll-12l03A-FSGS-303*SS SOIL SOIL 850.55 gn,,m NIA I 07/05/2022 0730 Gamma Spec NIA See comments Ll-12103A*FSGS-304-SS SOIL SOIL 850.55 grams NIA l 0710512022 0733 Gamma Spee NIA See comments Ll-l2!03A-FSGS-30S-SS SOIL SOIL 850.55 grams NIA l 07105/2022 0737 Gamma Spec NIA See comments Ll-12l03A-FSGS-305-SB SOIL SOIL 850.55 gnuns NIA 1 07/0512022 0815 GlllllJllaSpee NIA Sec comments LI -12 l03A*FSGS-306-SS SOIL SOIL 850.55 grams NIA l 07/0512022 0740 GsmmaSpec NIA See comments Ll-12l03A-FSGS-307-SS SOIL SOIL 850.55 grams NIA I 07/05/2022 0145 Labora!ory: Gamma Spee NIA See comments Date Submitted To lab: Ship Container No.:

p,/Jo;.1..

GEL Laboratories, LLC Cooler Temperature: Airbill Number.

2040 Savage Road Charleston, SC 29407 orr/ Nb Nb

?1J73 5CJtJ7 S'!'lo Date (mm/ddlyyyy):

f.530 fffl~TF-R,cked Relinquished by:

o'll/.J?n11 07//i/J.OlJ-Oat& (mm/M/yyyy):

Time:

Received by:

fcdtx / I Date: (mm/ddlyyyy):

- o7/12/2t1.:i... T:;;;~~;l Re~/~ Date: (m,Wdd/rlyy):

Comments: Gamma Spec indudes Cs137, Cs134, Co60 K-40,

/----~ 0 i /I'-// Z,011.

Time:

010 ° Bi-211/2121214, Pb-212/21I~ r Tl-208vas per June Ac-228, 23, 2021 e-mail and follow-up phone calls l_o f_3 _

Page 48 of 54 SDG: 586082 :~

ZS-WM-131 ZlONSOLUTJONS,LC NI S--,)'t~C OlrpH.1 Revi sionO Infor matio n Use Sample ID I Matrix I Sample Attac hmen t I - Chain-of-Custody Fonn Sample Containet 51' {.p ()g -J_

Type Sample Date Sample I Analysis Type I Preservative l Remarks Vol Unit Tyµe Qty Time LJ.J2l03A-FSGS-308-SS I

!.1-1218JA-FQGS-J08..SS SOIL I SOIL SOIL SOIL 850.55 850.55 grams gnuiu NIA N/A I 07/05/2022 0748 Gamma Spec NIA I Seecom mmts I 07/05/20?2 0748 Gamma Spec I

NIA See comments 1.1-12103A-FSGS-J09-SS SOIL SOil 850.55 grams NIA I 07/05/2012 0757 Gamma Spec NIA See comments Ll-l2103A-FSGS-JJO.SS I SOIL SOIL 850.55 grams NIA l 07/05IW12 0802 Gamma Spec NIA See comments Ll-12!03A*FSGS*31l *SS f SOIL SOil. 850.55 grams NIA I 07/05/2022 0806 Gamma Spec NIA See comments Ll-12 !OJA-FSGS-312-SS I SOIL SOIL 850.55 grams NIA l 07/05/2022 0810 Gamma Spec I NIA I See comments t.l*J2 IOJA-FSGS-313*SS I SOIL I SOIL I 850.55 grams I NIA I I I 07/05/2022 I 0814 I GammnSpec I LI -12IOJA-FSGS-314*SS

-,- NIA I See comments SOIL SOIL 850.55 grams NIA J 07105/2012 0816 Laboratory: GarnmaSpec NIA Dalt Submitted To Lab:

Ship Container No.;

I Ste comments GEL Laboratories, LLC Cooler Temperaturc: Airbill Number.

2040 Savage Road lid Na Charleston, SC 29407 07/12(1-01-1-- __

7773 5'/77 §1?:J I

Date (mmlddJmy): Time: ---*-

Rsr&~lllclstli Received by; Dale: (mm/dd/yyyy): Time:

07/;:2/JD)l /53() f(d t,~_;_E',__ ~7 /i;. }lQ tk _ _t _ /53 0 6nte~t~~ ITio,6 Relinquished by: Dale (mrni<'fdlyyyy'r. Time f-- --- --- -_ _,_ __ __ _.,____ __.,__ -:2~ 7. D Commenls: Gamma Spec includes Cs137, Cs134, Co60 +-'l ---- --'- ---: e."4 -=-

K-40, Bi-211/212/214, Pb-2 2/214, 2_o f_J _

Page 49 of 54 SDG: 586082 : ~ ZS-WM-131 ZIONSOLVTJONS[L(' RevisionO M~r&M:omCo l,j~ Information Use Sample ID Matrix Sample Attach~n t l - c:_hain_-_of-.Cust_odY_Fonm Sample Container Sample Date Sample Analysis Type Preservative S?LPon-Remarks Type Time Vol Unit Type Qty Ll-l2!03A-FSGS-JI 5-SS SOIL SOIL 850.55 grams NIA I 07/05/2/122 0818 Gamma Spec NIA See comments Ll-!2103A-FSGS-3l6-SS SOIL SOIL 850.55 grams NIA I 07/05/2fJ2.2 0820 GlUllmaSpec NIA See comments L1-12 I03A-FSGS-Jl6-SB SOIL SOIL 850.55 grams NIA I 07/0512ll2l 0816 Gamma Spec NIA See comments Ll-121 0JA-FSGS-317-SS SOIL SOIL 850.55 grams NIA I 07105/2022 0&30 Gamma Spec NIA See comments Laboratory: Date SUbmitted To Lab: Ship Container No.: Cooler Temperature: Airbill Number:

GEL Laborat,iries. LLC 2040 Savage Road Charleston. SC 29407 ort /12/ ;;,o ;i.z.

Na !:!t, 7773 S777 S'lft!

rf}J;;J~K!rktrf Date (mmldd/yyyy): Time: Received by: Date: (mm/ddlyyyy): Time:

Relinquished by:

o7lol2ti n /S30 Ff'J £5L~ / . - oTllJ./J.oJ.:"),. /S3c>

Datl (mm/ddlyyyy): Time: Date: (m.Vdd/yS,yy): Tin1e:

Re/~o I{:228, .Tl-208 as per June o7/. 1Lllloi1 0 rroo Comments: Gamma Spec includes Cs 137, Cs134, Co60 K-40, Bi-211/212/214, Pb-212/214, 23, 2021 e-mau and follow-up phone calls 3_of_ 3_

~ j Lacormones LLC SAMPLE RECEIPT & REVIEW FORM Client: -/#~, ,A-/ SDG/AR/COC/Worl< Order:

- ~

~"' 15:!r'Z Recci ved By: /;Z--,,,41 Date Received: 7//</ -/ ':? "Z._

~ I' CirckApplicahlc:

P FedEx Ground UPS Field Services Courier Other Carrier and Tracking Number 7773 J-r ;;7 T79 or J Suspected Hazard Information ~ 0 777 '> ~-q 7 , -7 71/2/,* 5 /z.J

,.. z ,;,If Net Counts> IOOcpm on samples not m;u'kctl "rndio: u.:1h*c", conhH.:t the Rm.Jiatiun St1fc1y Group for tl111hcr in\'C!-Cigation.

AJShipped as a DOT Hazar<luus? /

Hazard Class Shipped: UN#:,

lfUN2910, Is the Radioactive Shipment Survey Compliant? Yos_ No_ -

B) Did the dit!IH designate 1he s;,mp(t!s nrc m he COC not:uion orr:tdit,:.ictivc slickcn. on Clmrnincr.; cquaJ clienr dcsignution.

received as radioactive'! ,./

C) Did the RSO classify the somplos os Maximum Net Counts Ob~* (Observed Counts - Arco Background Counts): ~ 1 ' m R / H r rJdioactivc'?

_,. Classified a.y1 a; I Rad 2 Rad 3 . I.

DJ Did the client d<Signate samples are hazardous?

5.oc notarion or h ~ l s on containcm equal client designation.

/

If Dor Eis yes, select Hazards below.

PCB's Ffammable Foreign Soil RCRA Asbestos Beryllium Other:

E) Did the RSO identify nossihle hazards? . /

Sample Receipt Criteria ~

z-<

0

... z Comments/Qualifiers (Required for Non.. Couforming Items)

Shipping comaincrs received intact and Circk Applicable: Seals broken Damaged co11111incr Lc:uking conluinc:r Other (describe) l scaled?

Chain of custody documents included Circle Applicable: Clicnl cont:ictcd :ind prmidcd COC COC created upon receipt 2

with :shipment'! .,.--

Pre:,;crv;,tion Method: \Vc1 kc: lei: P:1cks Dty ice~!!

3 Samples requiring cold preservation / *aH tcmpcrnturcs are rccor<letl in Celsius Other:

TEMP:

z:_p within (0 :5 6 deg. C)?

Daily check performed and passed on IR Temperature Device Serial#:

< / / -

4 temperature gun? v Secondary Temperature Device Sctt11'1 # (If Applicable):

Circle Applic.ihlc: Sc:d:- hrokcn Oamug.cd comainer Leaking con1aincr ()1hcr (dcscrihcJ 5 Sample comainers intact and scaled?

Samples requiring chemical preservation S:implc ID':. nrld Con1aincrs Affected:

6 at proper pH? If Prc~erv,uKJn ndtlcd. f.cuff:

If Yes, are Encores or Soil Kits pre.sent for solids? Yes No *NA (If yes, toke to VOA Free,.er)

Do any samples require Volatile Do liquid VOA vials contain acid preservation? Yes No NA (If unknown, select No) 7 Are liquid VOA vials free ofheadspace*? Yes_ No_ NA_

Analysis?

j Sample JD's .:i.nd containers affcc1cd:

!D's und tests affected:

8 Samples received within holding time?

Sample !D's on COC match !D's on ID's and containers affected:

9 bottles?

Date & time on COC match date & time Circle Applicable: No dates on containers No times on contaiOers COC missing info Other (describe) 10 on bottles?

Number of containers received match Circle Applicable: No container count on COC Other (describe) 11 number indicated on COC?

Are sample containers identifiable as 12 GEL orovided bv use of GEL labels? j COC form is properly signed in Circle Applicable: Not relinquished Other (descrihe) 13 relinquished/rccci vcd sections? Y-Comments (Use Continuation Form if needed):

,v, C.. OL-I PM (or PMA) review: Initials Mll Date -J /2D/Z 2. Page __j_ of __J_

I I GL-CHL*SR-001 Rev 7 Page 50 of 54 SDG: 586082

List of current GEL Certifications as of 20 July 2022 State Certification Alabama 42200 Alaska 17018 Alaska Drinking Water SC00012 Arkansas 880651 CLIA 42D0904046 California 2940 Colorado SC00012 Connecticut PH0169 DoD ELAP/ ISO17025 A2LA 2567.01 Florida NELAP E87156 Foreign Soils Permit P3301500283, P3301500253 Georgia SC00012 Georgia SDWA 967 Hawaii SC00012 Idaho SC00012 Illinois NELAP 200029 Indiana CSC01 Kansas NELAP E10332 Kentucky SDWA 90129 Kentucky Wastewater 90129 Louisiana Drinking Water LA024 Louisiana NELAP 03046 (AI33904)

Maine 2019020 Maryland 270 Massachusetts MSC012 Massachusetts PFAS Approv Letter Michigan 9976 Mississippi SC00012 Nebraska NEOS2613 Nevada SC0001220225 New Hampshire NELAP 2054 New Jersey NELAP SC002 New Mexico SC00012 New York NELAP 11501 North Carolina 233 North Carolina SDWA 45709 North Dakota R158 Oklahoma 2019165 Pennsylvania NELAP 6800485 Puerto Rico SC00012 S. Carolina Radiochem 10120002 Sanitation Districts of L 9255651 South Carolina Chemistry 10120001 Tennessee TN 02934 Texas NELAP T1047042352220 Utah NELAP SC00012202136 Vermont VT87156 Virginia NELAP 460202 Washington C780 Page 51 of 54 SDG: 586082

Radiochemistry Technical Case Narrative Zion Solutions SDG #: 586082 Product: Dry Weight Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2289906 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 586082001 L1-12103A-FSGS-301-SS 586082002 L1-12103A-FSGS-302-SS 586082003 L1-12103A-FSGS-303-SS 586082004 L1-12103A-FSGS-304-SS 586082005 L1-12103A-FSGS-305-SS 586082006 L1-12103A-FSGS-305-SB 586082007 L1-12103A-FSGS-306-SS 586082008 L1-12103A-FSGS-307-SS 586082009 L1-12103A-FSGS-308-SS 586082010 L1-12103A-FQGS-308-SS 586082011 L1-12103A-FSGS-309-SS 586082012 L1-12103A-FSGS-310-SS 586082013 L1-12103A-FSGS-311-SS 586082014 L1-12103A-FSGS-312-SS 586082015 L1-12103A-FSGS-313-SS 586082016 L1-12103A-FSGS-314-SS 586082017 L1-12103A-FSGS-315-SS 586082018 L1-12103A-FSGS-316-SS 586082019 L1-12103A-FSGS-316-SB 586082020 L1-12103A-FSGS-317-SS The samples in this SDG were analyzed on an "as received" basis.

Data Summary:

There are no exceptions, anomalies or deviations from the specified methods. All sample data provided in this report met the acceptance criteria specified in the analytical methods and procedures for initial calibration, continuing calibration, instrument controls and process controls where applicable.

Product: Gammaspec, Gamma, Solid (Requested List)

Analytical Method: DOE HASL 300, 4.5.2.3/Ga-01-R Analytical Procedure: GL-RAD-A-013 REV# 27 Analytical Batch: 2290066 Preparation Method: Dry Soil Prep Page 52 of 54 SDG: 586082

Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2289906 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 586082001 L1-12103A-FSGS-301-SS 586082002 L1-12103A-FSGS-302-SS 586082003 L1-12103A-FSGS-303-SS 586082004 L1-12103A-FSGS-304-SS 586082005 L1-12103A-FSGS-305-SS 586082006 L1-12103A-FSGS-305-SB 586082007 L1-12103A-FSGS-306-SS 586082008 L1-12103A-FSGS-307-SS 586082009 L1-12103A-FSGS-308-SS 586082010 L1-12103A-FQGS-308-SS 586082011 L1-12103A-FSGS-309-SS 586082012 L1-12103A-FSGS-310-SS 586082013 L1-12103A-FSGS-311-SS 586082014 L1-12103A-FSGS-312-SS 586082015 L1-12103A-FSGS-313-SS 586082016 L1-12103A-FSGS-314-SS 586082017 L1-12103A-FSGS-315-SS 586082018 L1-12103A-FSGS-316-SS 586082019 L1-12103A-FSGS-316-SB 586082020 L1-12103A-FSGS-317-SS 1205139812 Method Blank (MB) 1205139813 586082001(L1-12103A-FSGS-301-SS) Sample Duplicate (DUP) 1205139814 Laboratory Control Sample (LCS)

The samples in this SDG were analyzed on a "dry weight" basis.

Data Summary:

All sample data provided in this report met the acceptance criteria specified in the analytical methods and procedures for initial calibration, continuing calibration, instrument controls and process controls where applicable, with the following exceptions.

Quality Control (QC) Information Duplication Criteria between QC Sample and Duplicate Sample The Sample and the Duplicate, (See Below), did not meet the relative percent difference requirement; however, they do meet the relative error ratio requirement with the value listed below.

Sample Analyte Value 1205139813 (L1-12103A-FSGS-301-SSDUP) Potassium-40 RPD 33.7* (0.00%-20.00%) RER 2.5 (0-3)

Qualifier Information Page 53 of 54 SDG: 586082

Qualifier Reason Analyte Sample Client Sample Results are considered a false UI positive due to high counting Actinium-228 586082017 L1-12103A-FSGS-315-SS uncertainty.

Bismuth-211 586082005 L1-12103A-FSGS-305-SS Bismuth-211 586082012 L1-12103A-FSGS-310-SS Bismuth-211 586082013 L1-12103A-FSGS-311-SS Bismuth-211 586082017 L1-12103A-FSGS-315-SS Cesium-137 586082013 L1-12103A-FSGS-311-SS Thallium-208 586082001 L1-12103A-FSGS-301-SS Results are considered a false UI positive due to high Bismuth-212 586082013 L1-12103A-FSGS-311-SS peak-width.

Bismuth-212 586082018 L1-12103A-FSGS-316-SS Results are considered a false UI Bismuth-211 586082016 L1-12103A-FSGS-314-SS positive due to interference.

Results are considered a false UI Actinium-228 586082003 L1-12103A-FSGS-303-SS positive due to low abundance.

Bismuth-211 586082008 L1-12103A-FSGS-307-SS Bismuth-211 586082010 L1-12103A-FQGS-308-SS Bismuth-211 586082011 L1-12103A-FSGS-309-SS Bismuth-211 586082014 L1-12103A-FSGS-312-SS Bismuth-211 586082019 L1-12103A-FSGS-316-SB Cesium-134 586082006 L1-12103A-FSGS-305-SB Lead-212 586082020 L1-12103A-FSGS-317-SS Certification Statement Where the analytical method has been performed under NELAP certification, the analysis has met all of the requirements of the NELAC standard unless otherwise noted in the analytical case narrative.

Page 54 of 54 SDG: 586082

August 30, 2022 Mr. Gerry Wood Zion Solutions 100 Shiloh Blvd.

Zion, Illinois 60099 Re: Zion Solutions Work Order: 590180

Dear Mr. Wood:

GEL Laboratories, LLC (GEL) appreciates the opportunity to provide the enclosed analytical results for the sample(s) we received on July 22, 2022. This original data report has been prepared and reviewed in accordance with GELs standard operating procedures.

Test results for NELAP or ISO 17025 accredited tests are verified to meet the requirements of those standards, with any exceptions noted. The results reported relate only to the items tested and to the sample as received by the laboratory. These results may not be reproduced except as full reports without approval by the laboratory.

Copies of GELs accreditations and certifications can be found on our website at www.gel.com.

Our policy is to provide high quality, personalized analytical services to enable you to meet your analytical needs on time every time. We trust that you will find everything in order and to your satisfaction. If you have any questions, please do not hesitate to call me at (843) 556-8171, ext. 1605.

Sincerely, PM_SIGN_HERE Zachary Worsham Project Manager Purchase Order: 702793 Enclosures Page 1 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 (843) 5568171 www.gel.com Certificate of Analysis Report for ENRG080 Zion Solutions (702793)

Client SDG: 590180 GEL Work Order: 590180 The Qualifiers in this report are defined as follows:

A quality control analyte recovery is outside of specified acceptance criteria

- Analyte is a Tracer compound

- Analyte is a surrogate compound U Analyte was analyzed for, but not detected above the MDL, MDA, MDC or LOD.

UI Gamma SpectroscopyUncertain identification Where the analytical method has been performed under NELAP certification, the analysis has met all of the requirements of the NELAC standard unless qualified on the Certificate of Analysis.

The designation ND, if present, appears in the result column when the analyte concentration is not detected above the limit as defined in the U qualifier above.

This data report has been prepared and reviewed in accordance with GEL Laboratories LLC standard operating procedures. Please direct any questions to your Project Manager, Zachary Worsham.

Reviewed by USER_SIGN_HERE Page 2 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201C-FIGS-201-SS Project: ENRG08001 Sample ID: 590180001 Client ID: ENRG080 Matrix: Soil Collect Date: 15-JUN-22 Receive Date: 22-JUL-22 Collector: Client Moisture: .268%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.232 +/-0.127 0.101 +/-0.128 pCi/g MXR1 08/19/22 1211 2305714 1 Bismuth-211 UI 0.000 +/-0.230 0.305 +/-0.457 pCi/g Bismuth-212 U 0.243 +/-0.297 0.475 +/-0.298 pCi/g Bismuth-214 0.212 +/-0.0821 0.0589 +/-0.0846 pCi/g Cesium-134 U 0.0100 +/-0.0171 0.0361 +/-0.0177 0.173 pCi/g Cesium-137 1.87 +/-0.0944 0.0301 +/-0.203 0.363 pCi/g Cobalt-60 U 0.00784 +/-0.0174 0.0361 +/-0.0178 0.109 pCi/g Europium-152 U 0.0171 +/-0.0467 0.0918 +/-0.0474 0.869 pCi/g Europium-154 U -0.0469 +/-0.0538 0.0927 +/-0.0579 0.799 pCi/g Lead-212 0.234 +/-0.0686 0.0561 +/-0.0711 pCi/g Lead-214 0.312 +/-0.0836 0.0639 +/-0.0876 pCi/g Potassium-40 11.3 +/-0.866 0.319 +/-1.33 pCi/g Thallium-208 0.0995 +/-0.0415 0.0255 +/-0.0426 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0182 +/-0.0236 0.0403 +/-0.0239 0.0425 pCi/g KP1 08/26/22 1505 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -0.134 +/-5.28 9.17 +/-5.28 19.5 pCi/g TXJ1 08/30/22 0644 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1428 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 83.2 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 91.2 (25%-125%)

Page 3 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201C-FIGS-201-SS Project: ENRG08001 Sample ID: 590180001 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 4 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201C-FIGS-201-SB Project: ENRG08001 Sample ID: 590180002 Client ID: ENRG080 Matrix: Soil Collect Date: 15-JUN-22 Receive Date: 22-JUL-22 Collector: Client Moisture: 7.23%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.297 +/-0.167 0.180 +/-0.170 pCi/g MXR1 08/19/22 1211 2305714 1 Bismuth-211 UI 0.000 +/-0.309 0.425 +/-0.543 pCi/g Bismuth-212 U 0.268 +/-0.331 0.666 +/-0.353 pCi/g Bismuth-214 0.387 +/-0.109 0.0752 +/-0.114 pCi/g Cesium-134 U -0.00548 +/-0.0227 0.0437 +/-0.0229 0.173 pCi/g Cesium-137 1.33 +/-0.111 0.0440 +/-0.156 0.363 pCi/g Cobalt-60 U 0.0125 +/-0.0303 0.0607 +/-0.0308 0.109 pCi/g Europium-152 U 0.0385 +/-0.0562 0.115 +/-0.0589 0.869 pCi/g Europium-154 U -0.000340 +/-0.0896 0.168 +/-0.0896 0.799 pCi/g Lead-212 0.357 +/-0.0671 0.0541 +/-0.0737 pCi/g Lead-214 0.353 +/-0.112 0.0863 +/-0.116 pCi/g Potassium-40 13.9 +/-1.20 0.503 +/-1.80 pCi/g Thallium-208 0.111 +/-0.0481 0.0374 +/-0.0490 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.00699 +/-0.0198 0.0401 +/-0.0198 0.0425 pCi/g KP1 08/26/22 1505 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -0.374 +/-5.00 8.70 +/-5.00 19.5 pCi/g TXJ1 08/30/22 0700 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1428 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 62.4 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 90.8 (25%-125%)

Page 5 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201C-FIGS-201-SB Project: ENRG08001 Sample ID: 590180002 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 6 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201C-FIGS-202-SS Project: ENRG08001 Sample ID: 590180003 Client ID: ENRG080 Matrix: Soil Collect Date: 12-JUL-22 Receive Date: 22-JUL-22 Collector: Client Moisture: .436%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.328 +/-0.114 0.102 +/-0.119 pCi/g MXR1 08/19/22 1212 2305714 1 Bismuth-211 UI 0.000 +/-0.222 0.274 +/-0.399 pCi/g Bismuth-212 0.463 +/-0.373 0.348 +/-0.375 pCi/g Bismuth-214 0.273 +/-0.0694 0.0601 +/-0.0732 pCi/g Cesium-134 U 0.00158 +/-0.0151 0.0294 +/-0.0151 0.173 pCi/g Cesium-137 U -0.00603 +/-0.0144 0.0263 +/-0.0147 0.363 pCi/g Cobalt-60 U -0.0115 +/-0.0190 0.0283 +/-0.0197 0.109 pCi/g Europium-152 U -0.0172 +/-0.0360 0.0657 +/-0.0369 0.869 pCi/g Europium-154 U 0.0198 +/-0.0450 0.0937 +/-0.0459 0.799 pCi/g Lead-212 0.250 +/-0.0541 0.0437 +/-0.0578 pCi/g Lead-214 0.263 +/-0.0805 0.0563 +/-0.0834 pCi/g Potassium-40 11.5 +/-0.843 0.212 +/-1.39 pCi/g Thallium-208 0.0898 +/-0.0341 0.0260 +/-0.0349 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.0148 +/-0.0190 0.0394 +/-0.0190 0.0425 pCi/g KP1 08/26/22 1505 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 2.33 +/-5.19 8.86 +/-5.21 19.5 pCi/g TXJ1 08/30/22 0715 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1428 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 87.9 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 90.8 (25%-125%)

Page 7 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201C-FIGS-202-SS Project: ENRG08001 Sample ID: 590180003 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 8 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201D-FIGS-303-SS Project: ENRG08001 Sample ID: 590180004 Client ID: ENRG080 Matrix: Soil Collect Date: 06-JUL-22 Receive Date: 22-JUL-22 Collector: Client Moisture: 10.6%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.505 +/-0.162 0.148 +/-0.170 pCi/g MXR1 08/19/22 1212 2305714 1 Bismuth-211 U 0.161 +/-0.535 0.203 +/-0.565 pCi/g Bismuth-212 U 0.464 +/-0.523 0.502 +/-0.524 pCi/g Bismuth-214 0.477 +/-0.0988 0.0820 +/-0.107 pCi/g Cesium-134 U 0.0362 +/-0.0234 0.0488 +/-0.0287 0.173 pCi/g Cesium-137 U 0.00395 +/-0.0201 0.0384 +/-0.0202 0.363 pCi/g Cobalt-60 U -0.00585 +/-0.0209 0.0395 +/-0.0211 0.109 pCi/g Europium-152 U -0.00554 +/-0.0499 0.0950 +/-0.0500 0.869 pCi/g Europium-154 U -0.00219 +/-0.0757 0.144 +/-0.0757 0.799 pCi/g Lead-212 0.429 +/-0.0703 0.0556 +/-0.0783 pCi/g Lead-214 0.636 +/-0.106 0.180 +/-0.119 pCi/g Potassium-40 14.7 +/-1.11 0.369 +/-1.75 pCi/g Thallium-208 0.104 +/-0.0462 0.0371 +/-0.0471 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.0247 +/-0.0180 0.0400 +/-0.0180 0.0425 pCi/g KP1 08/26/22 1506 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 3.47 +/-6.30 10.7 +/-6.33 19.5 pCi/g TXJ1 08/30/22 0731 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1428 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 90.2 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 68.6 (25%-125%)

Page 9 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201D-FIGS-303-SS Project: ENRG08001 Sample ID: 590180004 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 10 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201E-FIGS-202-SS Project: ENRG08001 Sample ID: 590180005 Client ID: ENRG080 Matrix: Soil Collect Date: 06-JUL-22 Receive Date: 22-JUL-22 Collector: Client Moisture: 4.75%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.252 +/-0.133 0.198 +/-0.177 pCi/g MXR1 08/19/22 1212 2305714 1 Bismuth-211 UI 0.000 +/-0.194 0.286 +/-0.373 pCi/g Bismuth-212 U 0.0883 +/-0.233 0.458 +/-0.237 pCi/g Bismuth-214 0.255 +/-0.0727 0.0589 +/-0.0760 pCi/g Cesium-134 U -0.00123 +/-0.0172 0.0323 +/-0.0172 0.173 pCi/g Cesium-137 U 0.00436 +/-0.0160 0.0316 +/-0.0161 0.363 pCi/g Cobalt-60 U 0.000808 +/-0.0136 0.0286 +/-0.0136 0.109 pCi/g Europium-152 U -0.000148 +/-0.0372 0.0704 +/-0.0372 0.869 pCi/g Europium-154 U -0.0303 +/-0.0489 0.0879 +/-0.0508 0.799 pCi/g Lead-212 0.237 +/-0.0502 0.0408 +/-0.0540 pCi/g Lead-214 0.252 +/-0.0705 0.0558 +/-0.0736 pCi/g Potassium-40 10.0 +/-0.865 0.264 +/-1.28 pCi/g Thallium-208 0.0782 +/-0.0274 0.0231 +/-0.0282 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0259 +/-0.0216 0.0351 +/-0.0221 0.0425 pCi/g KP1 08/26/22 1506 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -1.82 +/-4.52 7.97 +/-4.52 19.5 pCi/g TXJ1 08/30/22 0747 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1428 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 116 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 93.9 (25%-125%)

Page 11 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201E-FIGS-202-SS Project: ENRG08001 Sample ID: 590180005 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 12 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12102A-FIGS-201-SB Project: ENRG08001 Sample ID: 590180006 Client ID: ENRG080 Matrix: Soil Collect Date: 02-JUL-22 Receive Date: 22-JUL-22 Collector: Client Moisture: 3.73%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 U 0.384 +/-0.297 0.399 +/-0.345 pCi/g MXR1 08/19/22 1213 2305714 1 Bismuth-211 U 0.0982 +/-0.643 0.273 +/-0.649 pCi/g Bismuth-212 U 0.200 +/-0.443 0.872 +/-0.453 pCi/g Bismuth-214 0.371 +/-0.138 0.118 +/-0.142 pCi/g Cesium-134 U 0.00942 +/-0.0419 0.0791 +/-0.0421 0.173 pCi/g Cesium-137 0.0673 +/-0.0471 0.0581 +/-0.0474 0.363 pCi/g Cobalt-60 0.869 +/-0.112 0.0478 +/-0.134 0.109 pCi/g Europium-152 U 0.0397 +/-0.0688 0.137 +/-0.0711 0.869 pCi/g Europium-154 U 0.000804 +/-0.125 0.213 +/-0.125 0.799 pCi/g Lead-212 0.300 +/-0.0978 0.0846 +/-0.101 pCi/g Lead-214 0.340 +/-0.137 0.189 +/-0.140 pCi/g Potassium-40 10.2 +/-1.26 0.510 +/-1.57 pCi/g Thallium-208 0.0929 +/-0.0651 0.0555 +/-0.0656 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.00374 +/-0.0207 0.0397 +/-0.0207 0.0425 pCi/g KP1 08/26/22 1506 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 2.99 +/-4.71 7.98 +/-4.74 19.5 pCi/g TXJ1 08/30/22 0802 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1428 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 67.1 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 90.8 (25%-125%)

Page 13 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12102A-FIGS-201-SB Project: ENRG08001 Sample ID: 590180006 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 14 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12102A-FIGS-202-SS Project: ENRG08001 Sample ID: 590180007 Client ID: ENRG080 Matrix: Soil Collect Date: 11-JUL-22 Receive Date: 22-JUL-22 Collector: Client Moisture: 2.94%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.158 +/-0.121 0.126 +/-0.123 pCi/g MXR1 08/19/22 1214 2305714 1 Bismuth-211 UI 0.000 +/-0.226 0.318 +/-0.475 pCi/g Bismuth-212 UI 0.000 +/-0.393 0.348 +/-0.400 pCi/g Bismuth-214 0.278 +/-0.0745 0.0628 +/-0.0783 pCi/g Cesium-134 U -0.00156 +/-0.0191 0.0363 +/-0.0191 0.173 pCi/g Cesium-137 0.0462 +/-0.0336 0.0351 +/-0.0338 0.363 pCi/g Cobalt-60 0.110 +/-0.0415 0.0355 +/-0.0428 0.109 pCi/g Europium-152 U 0.0195 +/-0.0384 0.0813 +/-0.0395 0.869 pCi/g Europium-154 U 0.00449 +/-0.0538 0.110 +/-0.0538 0.799 pCi/g Lead-212 0.284 +/-0.0566 0.0446 +/-0.0612 pCi/g Lead-214 0.331 +/-0.0820 0.0600 +/-0.0862 pCi/g Potassium-40 10.7 +/-0.982 0.313 +/-1.44 pCi/g Thallium-208 0.0790 +/-0.0364 0.0231 +/-0.0370 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0156 +/-0.0210 0.0357 +/-0.0212 0.0425 pCi/g KP1 08/26/22 1506 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 1.42 +/-5.23 8.98 +/-5.24 19.5 pCi/g TXJ1 08/30/22 0818 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1428 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 118 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 91.7 (25%-125%)

Page 15 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12102A-FIGS-202-SS Project: ENRG08001 Sample ID: 590180007 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 16 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12102A-FIGS-206-SS Project: ENRG08001 Sample ID: 590180008 Client ID: ENRG080 Matrix: Soil Collect Date: 11-JUL-22 Receive Date: 22-JUL-22 Collector: Client Moisture: 2.2%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.316 +/-0.197 0.152 +/-0.200 pCi/g MXR1 08/19/22 1353 2305714 1 Bismuth-211 UI 0.000 +/-0.354 0.488 +/-0.737 pCi/g Bismuth-212 U 0.304 +/-0.355 0.680 +/-0.381 pCi/g Bismuth-214 0.382 +/-0.118 0.0775 +/-0.122 pCi/g Cesium-134 U 0.0315 +/-0.0397 0.0550 +/-0.0422 0.173 pCi/g Cesium-137 U 0.0231 +/-0.0248 0.0517 +/-0.0269 0.363 pCi/g Cobalt-60 U -0.0102 +/-0.0197 0.0364 +/-0.0203 0.109 pCi/g Europium-152 U 0.00446 +/-0.0591 0.107 +/-0.0591 0.869 pCi/g Europium-154 U -0.0183 +/-0.0817 0.155 +/-0.0822 0.799 pCi/g Lead-212 0.420 +/-0.0725 0.0557 +/-0.0828 pCi/g Lead-214 0.510 +/-0.129 0.0821 +/-0.136 pCi/g Potassium-40 11.8 +/-1.18 0.393 +/-1.68 pCi/g Thallium-208 0.0793 +/-0.0534 0.0405 +/-0.0538 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.00985 +/-0.0174 0.0344 +/-0.0174 0.0425 pCi/g KP1 08/26/22 1506 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -0.0436 +/-5.00 8.68 +/-5.00 19.5 pCi/g TXJ1 08/30/22 0834 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1440 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 109 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 89 (25%-125%)

Page 17 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12102A-FIGS-206-SS Project: ENRG08001 Sample ID: 590180008 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 18 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FIGS-301-SS Project: ENRG08001 Sample ID: 590180009 Client ID: ENRG080 Matrix: Soil Collect Date: 27-JUN-22 Receive Date: 22-JUL-22 Collector: Client Moisture: 1.96%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.522 +/-0.142 0.150 +/-0.150 pCi/g MXR1 08/19/22 1354 2305714 1 Bismuth-211 U 0.126 +/-0.569 0.208 +/-0.578 pCi/g Bismuth-212 U 0.569 +/-0.306 0.701 +/-0.402 pCi/g Bismuth-214 0.285 +/-0.119 0.0816 +/-0.121 pCi/g Cesium-134 U -0.00855 +/-0.0242 0.0447 +/-0.0245 0.173 pCi/g Cesium-137 0.0636 +/-0.0456 0.0393 +/-0.0459 0.363 pCi/g Cobalt-60 U 0.0195 +/-0.0204 0.0484 +/-0.0223 0.109 pCi/g Europium-152 U 0.00997 +/-0.0534 0.0987 +/-0.0536 0.869 pCi/g Europium-154 U 0.0341 +/-0.0635 0.139 +/-0.0654 0.799 pCi/g Lead-212 0.354 +/-0.0785 0.0668 +/-0.0849 pCi/g Lead-214 0.360 +/-0.105 0.155 +/-0.109 pCi/g Potassium-40 7.74 +/-0.844 0.354 +/-1.11 pCi/g Thallium-208 0.150 +/-0.0482 0.0384 +/-0.0498 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.00367 +/-0.0210 0.0405 +/-0.0211 0.0425 pCi/g KP1 08/26/22 1506 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 1.28 +/-5.22 8.98 +/-5.23 19.5 pCi/g TXJ1 08/30/22 0849 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1440 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 83.2 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 90.3 (25%-125%)

Page 19 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FIGS-301-SS Project: ENRG08001 Sample ID: 590180009 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 20 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FIGS-301-SB Project: ENRG08001 Sample ID: 590180010 Client ID: ENRG080 Matrix: Soil Collect Date: 27-JUN-22 Receive Date: 22-JUL-22 Collector: Client Moisture: 2.54%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.239 +/-0.133 0.115 +/-0.135 pCi/g MXR1 08/19/22 1354 2305714 1 Bismuth-211 UI 0.000 +/-0.269 0.383 +/-0.557 pCi/g Bismuth-212 U 0.134 +/-0.255 0.511 +/-0.263 pCi/g Bismuth-214 0.326 +/-0.0871 0.0694 +/-0.0914 pCi/g Cesium-134 U 0.0171 +/-0.0293 0.0438 +/-0.0303 0.173 pCi/g Cesium-137 0.0453 +/-0.0296 0.0331 +/-0.0298 0.363 pCi/g Cobalt-60 U -0.00926 +/-0.0192 0.0350 +/-0.0197 0.109 pCi/g Europium-152 U 0.0112 +/-0.0509 0.0968 +/-0.0512 0.869 pCi/g Europium-154 U 0.0175 +/-0.0518 0.110 +/-0.0524 0.799 pCi/g Lead-212 0.330 +/-0.0633 0.0493 +/-0.0695 pCi/g Lead-214 0.386 +/-0.0975 0.0698 +/-0.103 pCi/g Potassium-40 9.34 +/-0.850 0.247 +/-1.27 pCi/g Thallium-208 0.120 +/-0.0400 0.0331 +/-0.0413 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0316 +/-0.0255 0.0413 +/-0.0262 0.0425 pCi/g KP1 08/26/22 1506 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 0.704 +/-5.29 9.14 +/-5.29 19.5 pCi/g TXJ1 08/30/22 0905 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1440 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 94.8 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 90.8 (25%-125%)

Page 21 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FIGS-301-SB Project: ENRG08001 Sample ID: 590180010 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 22 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FIGS-302-SS Project: ENRG08001 Sample ID: 590180011 Client ID: ENRG080 Matrix: Soil Collect Date: 11-JUL-22 Receive Date: 22-JUL-22 Collector: Client Moisture: 1.21%

Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Rad Gamma Spec Analysis Gammaspec, Gamma, Solid (Requested List) "Dry Weight Corrected" Actinium-228 0.287 +/-0.165 0.119 +/-0.168 pCi/g MXR1 08/19/22 1354 2305714 1 Bismuth-211 U 0.0158 +/-0.430 0.159 +/-0.444 pCi/g Bismuth-212 U 0.362 +/-0.230 0.522 +/-0.284 pCi/g Bismuth-214 0.239 +/-0.0896 0.0558 +/-0.0919 pCi/g Cesium-134 UI 0.000 +/-0.0260 0.0460 +/-0.0404 0.173 pCi/g Cesium-137 0.0740 +/-0.0350 0.0388 +/-0.0355 0.363 pCi/g Cobalt-60 U 0.0261 +/-0.0198 0.0467 +/-0.0232 0.109 pCi/g Europium-152 U 0.0275 +/-0.0440 0.0924 +/-0.0458 0.869 pCi/g Europium-154 U 0.0309 +/-0.0596 0.125 +/-0.0612 0.799 pCi/g Lead-212 0.395 +/-0.0718 0.0496 +/-0.0799 pCi/g Lead-214 0.348 +/-0.0726 0.125 +/-0.0780 pCi/g Potassium-40 7.92 +/-0.793 0.259 +/-1.11 pCi/g Thallium-208 0.0913 +/-0.0401 0.0292 +/-0.0408 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0141 +/-0.0237 0.0413 +/-0.0239 0.0425 pCi/g KP1 08/26/22 1506 2305650 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 1.83 +/-5.33 9.13 +/-5.34 19.5 pCi/g TXJ1 08/30/22 0921 2307619 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 SF1 07/22/22 1440 2305626 The following Analytical Methods were performed Method Description 1 DOE HASL 300, 4.5.2.3/Ga-01-R 2 EPA 905.0 Modified/DOE RP501 Rev. 1 Modified 3 DOE RESL Ni-1, Modified Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Strontium Carrier GFPC, Sr90, Solid "Dry Weight Corrected" 2305650 46.2 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2307619 90.3 (25%-125%)

Page 23 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com Certificate of Analysis Company : Zion Solutions Address : 100 Shiloh Blvd.

Zion, Illinois 60099 Report Date: August 30, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12103A-FIGS-302-SS Project: ENRG08001 Sample ID: 590180011 Client ID: ENRG080 Parameter Qualifier Result Uncertainty MDC TPU RL Units PF DF Analyst Date Time Batch Mtd.

Surrogate/Tracer Recovery Test Batch ID Recovery% Acceptable Limits Notes:

The MDC is a sample specific MDC.

TPU is calculated at the 95% confidence level (1.96-sigma).

Column headers are defined as follows:

DF: Dilution Factor Mtd.: Method DL: Detection Limit PF: Prep Factor Lc/LC: Critical Level RL: Reporting Limit MDA: Minimum Detectable Activity TPU: Total Propagated Uncertainty MDC: Minimum Detectable Concentration Page 24 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Report Date: August 30, 2022 Client : Zion Solutions Page 1 of 5 100 Shiloh Blvd.

Zion, Illinois

Contact:

Mr. Gerry Wood Workorder: 590180 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2305714 QC1205169263 590180001 DUP Actinium-228 0.232 0.290 pCi/g 22.2 (0% - 100%) MXR1 08/19/22 15:47 Uncert: +/-0.127 +/-0.153 TPU: +/-0.128 +/-0.203 Bismuth-211 UI 0.000 UI 0.000 pCi/g 0 N/A Uncert: +/-0.230 +/-0.244 TPU: +/-0.457 +/-0.404 Bismuth-212 U 0.243 U 0.444 pCi/g 0 N/A Uncert: +/-0.297 +/-0.449 TPU: +/-0.298 +/-0.450 Bismuth-214 0.212 0.235 pCi/g 10 (0% - 100%)

Uncert: +/-0.0821 +/-0.0828 TPU: +/-0.0846 +/-0.0852 Cesium-134 U 0.0100 U 0.0222 pCi/g 0 N/A Uncert: +/-0.0171 +/-0.0232 TPU: +/-0.0177 +/-0.0254 Cesium-137 1.87 1.75 pCi/g 6.58 (0%-20%)

Uncert: +/-0.0944 +/-0.107 TPU: +/-0.203 +/-0.180 Cobalt-60 U 0.00784 U -0.00876 pCi/g 0 N/A Uncert: +/-0.0174 +/-0.0192 TPU: +/-0.0178 +/-0.0196 Europium-152 U 0.0171 U -0.0168 pCi/g 0 N/A Uncert: +/-0.0467 +/-0.0476 TPU: +/-0.0474 +/-0.0482 Europium-154 U -0.0469 U 0.0567 pCi/g 0 N/A Uncert: +/-0.0538 +/-0.104 TPU: +/-0.0579 +/-0.107 Lead-212 0.234 0.205 pCi/g 13.2 (0% - 100%)

Uncert: +/-0.0686 +/-0.0664 TPU: +/-0.0711 +/-0.0688 Lead-214 0.312 0.255 pCi/g 20.1 (0% - 100%)

Uncert: +/-0.0836 +/-0.0885 TPU: +/-0.0876 +/-0.0911 Potassium-40 11.3 10.5 pCi/g 7.99 (0%-20%)

Uncert: +/-0.866 +/-0.975 TPU: +/-1.33 +/-1.40 Thallium-208 0.0995 0.101 pCi/g 1.82 (0% - 100%)

Uncert: +/-0.0415 +/-0.0369 TPU: +/-0.0426 +/-0.0379 QC1205169264 LCS Americium-241 485 510 pCi/g 105 (75%-125%) MXR1 08/19/22 15:48 Page 25 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 590180 Page 2 of 5 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2305714 Uncert: +/-9.64 TPU: +/-48.8 Actinium-228 U 0.459 pCi/g Uncert: +/-1.60 TPU: +/-1.62 Bismuth-211 U 0.321 pCi/g Uncert: +/-2.10 TPU: +/-2.10 Bismuth-212 7.54 pCi/g Uncert: +/-6.92 TPU: +/-6.96 Bismuth-214 U 0.118 pCi/g Uncert: +/-0.624 TPU: +/-0.626 Cesium-134 U 0.159 pCi/g Uncert: +/-0.357 TPU: +/-0.365 Cesium-137 157 157 pCi/g 100 (75%-125%)

Uncert: +/-2.39 TPU: +/-14.8 Cobalt-60 74.7 74.6 pCi/g 99.8 (75%-125%)

Uncert: +/-2.06 TPU: +/-6.54 Europium-152 U -0.297 pCi/g Uncert: +/-1.06 TPU: +/-1.07 Europium-154 U -0.0848 pCi/g Uncert: +/-0.593 TPU: +/-0.595 Lead-212 U 0.0510 pCi/g Uncert: +/-0.540 TPU: +/-0.541 Lead-214 U -0.515 pCi/g Uncert: +/-0.776 TPU: +/-0.811 Potassium-40 U -0.807 pCi/g Uncert: +/-1.36 TPU: +/-1.41 Thallium-208 U 0.178 pCi/g Uncert: +/-0.326 TPU: +/-0.336 QC1205169262 MB Actinium-228 U -0.135 pCi/g MXR1 08/19/2215:47 Uncert: +/-0.0997 TPU: +/-0.117 Bismuth-211 U -0.0571 pCi/g Page 26 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 590180 Page 3 of 5 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2305714 Uncert: +/-0.114 TPU: +/-0.117 Bismuth-212 U -0.0413 pCi/g Uncert: +/-0.282 TPU: +/-0.283 Bismuth-214 U 0.00615 pCi/g Uncert: +/-0.0488 TPU: +/-0.0489 Cesium-134 U 0.0225 pCi/g Uncert: +/-0.0226 TPU: +/-0.0248 Cesium-137 U -0.0192 pCi/g Uncert: +/-0.0223 TPU: +/-0.0239 Cobalt-60 U 0.00986 pCi/g Uncert: +/-0.0258 TPU: +/-0.0262 Europium-152 U -0.00507 pCi/g Uncert: +/-0.0487 TPU: +/-0.0487 Europium-154 U -0.0153 pCi/g Uncert: +/-0.0548 TPU: +/-0.0552 Lead-212 U -0.0345 pCi/g Uncert: +/-0.0342 TPU: +/-0.0376 Lead-214 U -0.0388 pCi/g Uncert: +/-0.0422 TPU: +/-0.0458 Potassium-40 U -0.0931 pCi/g Uncert: +/-0.283 TPU: +/-0.287 Thallium-208 U 0.0147 pCi/g Uncert: +/-0.0389 TPU: +/-0.0389 Rad Gas Flow Batch 2305650 QC1205169137 590180011 DUP Strontium-90 U 0.0141 U 0.0120 pCi/g 0 N/A KP1 08/26/22 15:05 Uncert: +/-0.0237 +/-0.0202 TPU: +/-0.0239 +/-0.0203 QC1205169138 LCS Strontium-90 1.78 2.06 pCi/g 116 (75%-125%) KP1 08/26/22 15:05 Uncert: +/-0.0955 TPU: +/-0.380 QC1205169136 MB Page 27 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 590180 Page 4 of 5 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gas Flow Batch 2305650 Strontium-90 U 0.0124 pCi/g KP1 08/26/22 15:05 Uncert: +/-0.0226 TPU: +/-0.0227 Rad Liquid Scintillation Batch 2307619 QC1205173125 590180001 DUP Nickel-63 U -0.134 U 4.10 pCi/g 0 N/A TXJ1 08/30/22 09:52 Uncert: +/-5.28 +/-5.33 TPU: +/-5.28 +/-5.38 QC1205173126 LCS Nickel-63 249 254 pCi/g 102 (75%-125%) TXJ1 08/30/22 10:08 Uncert: +/-10.6 TPU: +/-48.1 QC1205173124 MB Nickel-63 U 1.64 pCi/g TXJ1 08/30/22 09:36 Uncert: +/-4.66 TPU: +/-4.67 Notes:

TPU and Counting Uncertainty are calculated at the 95% confidence level (1.96-sigma).

The Qualifiers in this report are defined as follows:

- Analyte is a Tracer compound

< Result is less than value reported

> Result is greater than value reported BD Results are either below the MDC or tracer recovery is low FA Failed analysis.

H Analytical holding time was exceeded J See case narrative for an explanation J Value is estimated K Analyte present. Reported value may be biased high. Actual value is expected to be lower.

L Analyte present. Reported value may be biased low. Actual value is expected to be higher.

M M if above MDC and less than LLD M REMP Result > MDC/CL and < RDL N/A RPD or %Recovery limits do not apply.

N1 See case narrative ND Analyte concentration is not detected above the detection limit NJ Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Q One or more quality control criteria have not been met. Refer to the applicable narrative or DER.

R Sample results are rejected U Analyte was analyzed for, but not detected above the MDL, MDA, MDC or LOD.

UI Gamma Spectroscopy--Uncertain identification UJ Gamma Spectroscopy--Uncertain identification Page 28 of 44 SDG: 590180

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 590180 Page 5 of 5 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time UL Not considered detected. The associated number is the reported concentration, which may be inaccurate due to a low bias.

X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Y Other specific qualifiers were required to properly define the results. Consult case narrative.

^ RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL. Qualifier Not Applicable for Radiochemistry.

h Preparation or preservation holding time was exceeded N/A indicates that spike recovery limits do not apply when sample concentration exceeds spike conc. by a factor of 4 or more or %RPD not applicable.

- Indicates analyte is a surrogate/tracer compound.

^ The Relative Percent Difference (RPD) obtained from the sample duplicate (DUP) is evaluated against the acceptence criteria when the sample is greater than five times (5X) the contract required detection limit (RL). In cases where either the sample or duplicate value is less than 5X the RL, a control limit of +/- the RL is used to evaluate the DUP result.

For PS, PSD, and SDILT results, the values listed are the measured amounts, not final concentrations.

Where the analytical method has been performed under NELAP certification, the analysis has met all of the requirements of the NELAC standard unless qualified on the QC Summary.

Page 29 of 44 SDG: 590180

Page 30 of 44 SDG: 590180 ZS-WM-131 Revision 0 Information Use An EmffgySok1lions ConiP$ny Attachment 1 - Chai11_-of-Custody Fonn 5f10;,*~

Sample ID Matrix Sample Type Sample Container Sample Date Sample Analysis Type Preservative Remarks Time Vol Unit Type Qty Ll-12102A-FIGS-202-SS SOIL SOIL 850.38 grams NIA l 07111/2022 1015 Gamma Spec NIA See comments Ll-12102A-FIGS-203-SS SOIL SOIL 850.38 grams NIA 1 07/11/2022 1028 Gamma.Spec NIA See comments L l-12102A-FIGS-204-SS SOIL SOIL 850.38 grams NIA l 07111/2022 1035 Gamma.Spec NIA See comments Ll-!2102A-FIGS-205-SS SOIL SOIL 850.38 grams NIA I 07/ll/2022 1043 Gamma.Spec NIA See comments Ll-l2102A-QIGS-205-SS SOIL SOIL 850.38 grams N/A 1 07lll/2022 1043 Gamma.Spec NIA See comments L 1-12102A-FIGS-206-SS SOIL SOIL 850.38 grams NIA I 07lll/2022 1050 Gamma Spec NIA See comments Laboratory: Date Submitted To Lab: Ship Container No.: Cooler Temperature: Airbill Number:

GEL Laboratories, LLC NA NA 2040 Savage Road Charleston, SC 29407 07/20/202i 777'-I 3172 f lflb Date (mm/dd/yyyy): Time: Received by: Date: (mm/dd/yyyy): Time:

R{j7;);~~d f: /Zi'c kfti Relinquished by:

0 7fl- oIJOZ2v ll OD Date (ihm/ddlfyyy): Time:

fr0J fx Received ~:,I' ~

01/10/J()JL-Date: (mfu/dd/yyyy):

//Oo Time:

.//fl;,-A '()1)-,.; 7/2z/2z 90-f" Comments: Gamma Spec includes Cs137, Cs134, Co60 K-40, Bi-211/212/214, Pb-212/214, Ac-228, Tl-/oa as per June 23, 2021 e-mail and follow-up phone calls of Page 31 of 44 SDG: 590180 ZS-WM-131 Revision 0 Information Use Attachment 1 - Chain-of-Custody Form 5t101:J1-Sample ID Matrix Sample Type Sample Container Sample Date Sample Analysis Type Preservative Remarks Time Vol Unit Type Qty Ll-12102A-FIGS-201-SS SOIL SOIL 850.53 grams NIA l 07102/2022 0802 Gamma Spec N/A See comments Ll-12102A-FIGS-20 I-SB SOIL SOIL 850.53 grams NIA I 07102/2022 0830 Gamma Spec N/A See comments Laboratory: Date Submitted To Lab: Ship Container No.: Cooler Temperature: Airbill Number:

GEL Laboratories, LLC NA NA 2040 Savage Road Charleston, SC 29407 0 7/Jo/20-zz, '77711- 3172- [1/rJp Date (mmldd/yyyy): Time: Received by: Date: (mm/dd/yyyy): Time:

Re74;;~x;:rJ £ /?/ch rt ()7/20/207-i II oo F(c! £Y: 07 /;c;/202, //00 Relinquished by: Dat! (mm/~d/yyyy): Time:

Rece#?L D;t~;z Time:

<;(JS Comments: Gamma Spec includes Cs137, Cs134, Co60 K-40, Bi-211/212/214, Pb-212/214, Ac-228, Tl-208 as per June 23, 2021 e-mail and follow-up phone calls 1 of -~

Page 32 of 44 SDG: 590180 ZS-WM-131 Revision 0 Information Use Attachment 1 - Chain-of-Custody Fonn

,;g, 031-.

Sample ID Matrix Sample Type Sample Container Sample Date Sample Analysis Type Preservative Remarks Time Vol Unit Type Qty Ll-1220IE-FIGS-201-SS SOIL SOIL 850.29 grams NIA l 0710612022 0936 Gamma Spee NIA See comments L 1-1220 I E-FIGS-202-SS SOIL SOIL 850.29 grams NIA I 07/06/2022 0940 Gamma Spec NIA See comments Ll-12201E-QIGS-202-SS SOIL SOIL 850.29 grams NIA l 07/06/2022 0940 Gamma Spec NIA See comments Laboratory: Date Submitted To Lab: Ship Container No.: Cooler Temperature: Airbill Number:

GEL Laboratories, LLC NA NA 2040 Savage Road Charleston, SC 29407 0 7/JO/:ZO 22- 777¥ 3!72- ll/3{:;

Date (mm/dd/yyyy): Time: Received bv: Date: (rnm/dd/yyyy): Time:

R~T;h:~d f_f1/ikvrl Relinquished by:

07 /J(l/JOJ Datef(mm/dMyyyy):

//0()

Time:

[r,J fy 01/20/20J..2-Date: (mmfdd/yy))Y):

//00 Time:

Received;;~~~

7/22/22.., 9G2S Comments: Gamma Spec includes Cs137, Cs134, Co60 K-40, Bi-211/212/214, Pb-212/214, Ac-228, Tl-20!f'as per June 23, 2021 e-mail and follow-up phone calls of Page 33 of 44 SDG: 590180 ZS-WM-131 Revision 0 Information Use Attachment 1 - Chain-of-Custody Form ~ ' (J3i.,

Sample JD Matrix Sample Type Sample Container Sample Date Sample Analysis Type Preservative Remarks Time Vol Unit Type Qty Ll-12201D-FIGS-301-SS SOIL SOJL 850.51 grams NIA l 07/06/2022 0920 Gamma Spec NIA See comments Ll-1220 I D-FIGS-302-SS SOIL SOIL 850.51 grams NIA I 07/06/2022 0922 Gamma Spec NIA See comments Ll-l2201D-FIGS-303-SS SOIL SOIL 850.51 grams NIA I 07/06/2022 0925 Gamma Spec NIA See comments Ll-12201D-QIGS-303-SS SOIL SOIL 850.51 grams NIA l 07/06/2022 0925 Gamma Spec NIA See comments Laboratory: Date Submitted To Lab: Ship Container No.: Cooler Temperature: Airbill Number:

07/20/ ,2o;z2, GEL Laboratories, LLC NA NA 2040 Savage Road Charleston, SC 29407 7771/ "3172 11/Sb Relinquished by: Date (mm/dd/yyyy): Time: Received by: Date: {mm/dd/yyyy): Time:

f?/cAard r,-R/ckeri Relinquished by:

()J/20/202-i Date(mm!d6/yyyy):

// oO Time:

(cJ fx () 7/20/1022 /!O()

Receiv~ Date: (~~dd!A,yy): Time:

!IJ'4 tfd/94'( 7/zJ;/22. '?OS Comments: Gamma Spec includes Cs 137, Cs134, Co60 K-40, Bi-211/212/214, Pb-212/214, Ac-228, Tl-2~8 as per June 23, 2021 e-mail and follow-up phone calls of -~

1

Page 34 of 44 SDG: 590180 ZS-WM-131 Revision 0 Information Use Attachment 1 - Chain-of-Custody Form st,o,~

Sample ID Matrix Sample Type Sample Container Sample Date Sample Analysis Type Preservative Remarks Time Vol Unit Type Qty L l-l 2201C-FIGS-202-SS SOIL SOIL 850.38 grams NIA 1 0711212022 1340 Gamma Spec NIA See comments L1-12201 C-FIGS-203-SS SOIL SOIL 850.38 grams NIA 1 07112/2022 1348 Gamma Spec NIA See comments Ll-12201C-FJGS-204-SS SOIL SOIL 850.38 grams NIA I 0711212022 1352 Gamma Spec NIA See comments Ll-12201C-FIGS-205-SS SOIL SOIL 850.38 grams NIA l 0711212022 1356 Gamma Spec NIA See comments Laboratory: Date Submitted To Lab: Ship Container No.: Cooler Temperature: Airbill Number:

07 /20/ 207 GEL Laboratories, LLC NA NA 2040 Savage Road Charleston, SC 29407 777~ 3112 !'18b Date (mmldd/yyyy): Time: Received by: Date: (mm/ddlyyyy): Time:

Re~~uf;;;;;td f- rf/vkvrf 07I 20 )202-Z.. II ()CJ reJe:1 07'10/2022- !/00 Relinquished by: Date (mm/dd/fyyy): Time: Date: (m6vdd/5-yyy): Time:

Recei~,&

ilA '{r(9IN' 7/z.2./zL 9G..5' Comments: Gamma Spec includes Cs137, Cs 134, Co60 K-40, Bi-211/212/214, Pb-212/214, Ac-228, Tl-268 as per June 23, 2021 e-mail and follow-up phone calls l of ~1 -

Page 35 of 44 SDG: 590180 ZS-WM-131 Revision 0 Information Use An EnergyS:l!utiorrs Comp$:ny Attachment 1 - Chain-of-Custody Form S:-&<()'?V Sample ID Matrix Sample Type Sample Container Sample Date Sample Analysis Type Preservative Remarks Time Vol Unit Type Qty Ll-1220I C-FIGS-201-SS SOIL SOIL 850.88 grams NIA I 06115/2022 0940 Gamma Spec NIA See comments L1-12201C-QIGS-201-SS SOIL SOIL 850.88 grams NIA I 06/1512022 0940 Gamma Spec NIA See comments L 1-12201C-FIGS-201-SB SOIL SOIL 850.88 grams NIA I 06/15/2022 0950 Gamma Spec NIA See comments Laboratory: Date Submitted To Lab: Ship Container No.: Cooler Temperature: Airbill Number:

GEL Laboratories, LLC NA NA 2040 Savage Road Charleston, SC 29407 01/ 2 0/ 2 o;L2-- 777 t/3f 7~_,Jlf 8b Date (mm/dd/yyyy): Time: Received by: Date: (mm/dd/yyyy):

R~}:h~b;J k K/rl<irf Time:

01/20/201- !loo (JU ()7/ ;.0/1022- lloo Rec~~~

Relinquished by: Date (1nm/dd/yyyy): Time: Date: (mm/dd3/yyyy): Time:

-z /zzlz:2 q~(:15

.{o l '

Comments: Gamma Spec includes Cs137, Cs134, Co60 K-40, Bi-211/212/214, Pb-212/214, Ac-228, Tl- 08 as per June 23, 2021 e-mail and follow-up phone calls of Page 36 of 44 SDG: 590180 ZS-WM-131 Revision 0 Information Use S8'1o}t-Attachment 1 - Chain-of-Custody Form Sample ID Matrix Sample Type Sample Container Sample Date Sample Analysis Type Preservative Remarks Time Vol Unit Type Qty Ll-12103A-FIGS-301-SS SOIL SOIL 850.01 grams NIA I 06/27/2022 0905 Gamma Spec NIA See comments LI-I 2103A-FIGS-30 I-SB SOIL SOIL 850.01 grams NIA 1 06/27/2022 0908 Gamma Spec NIA See comments Laboratory: Date Submitted To Lab: Ship Container No.: Cooler Temperature: Airbill Number:

7/7-o/Jol-~

GEL Laboratories, LLC NA NA 2040 Savage Road Charleston, SC 29407 777lf J/72 JL/8/;

Date (mm/dd/yyyy): Time: Received by: Date: (mm/dd/yyyy): Time:

Ret2:l~h~:rd f fihkcrt Relinquished by:

o7rzo/J(Jti fl OD Date (mm/ddYyyyy): Time:

feJ/3-x Received by:

0 7/20/)()7-:2-Date: (mm1dd/yy#y):

//60 Time:

di£-

, 7,/22/2..L q(J.r Comments: Gamma Spec includes Cs137, Cs134, Co60 K-40, Bi-211/212/214, Pb-212/214, Ac-228, Tl-208 as per June 23, 2021 e-mail and follow-up phone calls

-~

1 of Page 37 of 44 SDG: 590180 ZS-WM-131 Revision 0 Information Use An Eni.'1'.gy,S,w.Akms Coinpany Attachment 1 - Chain-of-Custody Form S~1 o,");-

Sample ID Matrix Sample Type Sample Container Sample Date Sample Analysis Type Preservative Remarks Time Vol Unit Type Qty L 1-12103A-FIGS-302-SS SOIL SOIL 850.25 grams NIA 1 07/11/2022 0935 Gamma Spec NIA See comments L1-12103A-FIGS-303-SS SOIL SOIL 850.25 grams NIA 1 07/1112022 0937 Gamma Spec NIA See comments Ll-12103A-FIGS-304-SS SOIL SOIL 850.25 grams NIA I 0711112022 0944 Gamma Spec NIA See comments Ll-12103A-FIGS-305-SS SOIL SOIL 850.25 grams NIA I 07/11/2022 0950 Gamma Spec NIA See comments Ll-12103A-FIGS-306-SS SOIL SOIL 850.25 grams NIA I 07/11/2022 0958 Gamma Spec NIA See comments Ll-12103A-FIGS-307-SS SOIL SOIL 850.25 grams NIA l 07/11/2022 1005 Gamma Spec NIA See comments Ll-12103A-FIGS-308-SS SOIL SOIL 850.25 grams NIA 1 0711112022 1012 Gamma Spec NIA See comments Ll-I2103A-QIGS-308-SS SOIL SOIL 850.25 grams N/A 1 07/11/2022 1012 Gamma Spec NIA See comments Laboratory: Date Submitted To Lab: Ship Container No.: Cooler Temperature: Airbill Number:

GEL Laboratories, LLC NA NA 2040 Savage Road Charleston, SC 29407 07 /10/:207-~ 7771.f 3[?2 !L/8t Date (mm/ddlyyyy): Time: Received by: Date: (mm/dd/yyyy): Time:

Ri7~J;~;) f/ )?,\kcrt 07/1-0/J(/F~ I/OJ Frd£x 07/Jo/Jo?J-I I! tJO Relinquished by: Date (rhm/dd/$-yyy): Time:

Rece#L Date: (mmtlld/yyyy):

7/22/22.

Time:

Cf(J-f' Comments: Gamma Spec includes Cs137, Cs134, Co60 K-40, Bi-211/212/214, Pb-212/214, Ac-228, Tl-208 as per June 23, 2021 e-mail and follow-up phone calls of Page 38 of 44 SDG: 590180 Survey#: 2.ot1. -ooc::t7

Description:

SA!!l~.t'.S Ft,a.._ $/J)ftfllf%(e: 7 !rf/2.Z... Time:67l./S-Unit:_MLMLDG: /II/ft. ELEV: ~z' Surveyor Name(s): (Print) 0£/.J,,./ &£/<i'?G'.$ (Sign) /'d-- ~ SOLVTIONS, ...

RWP: ZoZZ. ooo 1 Rad Posting: JV/n !Air Sample taken: yes.s!no Dosimetry Placement: !l!l Chest Head All dose rates in mrem/hr unless otherwise noted Thigh Other Instrument Model Serial# .SJ:b~~1tll6 Si.JR.vet- o F6:t,} so;l... 8/J.'5 IN ( lJ lo r:,14llcui/ &--r ~llf-m-J 2.:.9~.~" _az,,_L(J_Z)_~o l, t. $f,l~l.£. ~.s ___ /1"1Jil'f.::L_/J-~~~-~-~ ,_',.J_~____S_t1&_v11.._-y __ /(~ s v m Ji,~"' ~:,1 it'! l (1(-

IL/-~ 2 7 1 ' '9 < /HJ.£ /J:.S. f'olLat,,,t<;.

All Smears and/or Large Area Swipes , -** . -~--"--~--*---*-*-~----**~-*----------*-.. --*-*~--*-*~*

<1000 dpm/100cm (unless noted below) 2 Massi inns All D1R£GtJ rdilS /e.. £ 0 1"u.m.s ~ BKL,o ,;1::. io -"lo <..e_-

~-y a # ~-y a Letter ~-y 7 .

_v

/ fol,.(.. O.t$_~__ Sm.£A.@..:S___ . < /110 fl- _______ 8 - . I~ .. 'Df !:""_/ o.. - 1 tlf---

/$". --~***-*--*---

--** ~-----*----~*-*---***---*------**--**** -*

C0<1 tVT.CA l!)tl/ A- .50.so.

.v

.,I I/ **------****- *---------~----*--***-----***-***-~ --------***-** - **-*---- - -*-*--"-*---------* --- ------****-*-* - --- ..

/4 ~~G.L_dU~ ~ /80 e:..t:.p~pa.oG£. Atc.c~ .

V

/

/ C..e-lJLJA-c."J _Dc.sc .. IJ..~T£> (1,-v /+LL.. -- ,$01 _(..___ B,+6S frtl/QSJJ lff l~&> -----**-*---****-*-

V

/ <;

C.oNIA,,.., R:,S ..... 0-ol mLjt111-DRPs detected: Yes 151/'Jo ON/A Purpose of Survey: Comments: ---*---- --------*--*--*----------~------- .. ----"'-----------------------~--- -- ---**-- - . -*. --------***------ ---**-*-**-**

RWP Decon Recommended

&.5_ l<&re.s e.. -3o_ c.,-. ~_g___L m £"T"£ a-.. ~ t,. . e I f'i1, A-LI3/4 n-D Routine Shielding Recommended I D lnvestigational Release Recommended ---*---- .. --------*----- *-*------------- - ----* ------*-*-*------- __ ,. __

D Release ~ None

..Slflfq>&'tvJ ff' R'W<2)<002-0

~ Other (specify)

Other (specify)

~ff A/J pU;,vj"

- - - - = Rad boundary #/#

~ = Contact/ 30cm dose rates

~---~----*-*- **-***------**--*----*-*---**---*-**--**-* - . -- --- -****------* *-------- --------

= Gamma dose rate *-*

8 -Large area swipe

= Smear location Peer Check (Signature): w:rv:./ / '__Vj RPS Approval (Signature): &~\,_./?

SAMPLE RECEIPT & REVIEW FORM Client: ,=t\.ualc. SDG/AR/COC/Work Order: c;s,o}'Z Received Bv: STACY 8MNE DateReceived:JULV 22 2ti22 Cirdc Applkahlc:

FedEx~ress FedEx Ground UPS Field Services Courier Other Carrier and Tracking Number 777'-I :H'12 I 1486 0

Suspected Hazard Information a'.l

,.. z *If Net Counts> lOOcpm on samples not marked "radioactive", contact the Radiation Safety Group for further inve.stig.ttion.

Hazard Class Shipped: UN#:

/!4 If UN29 I0. Is lhe Radioaclive Shipment Survey Complianl? Yes_ No_

A)Shiooed as a DOT Hazardous?

B) Did the client designale the samples are to be ..,..,.. COC notation or mdioattive stickers on containeffi equal client designation.

received as radioactive'!

C) Did the RSO classify the samples as ,,,...,,, Maximum Net Counts Observed* (Observed Counts -Area Background Counts): -'lt_CPM / mR/Hr radioactive? Classified as: Rad I Rad 2 Rad3 COC notation or ha1.ard labels on containers equal clienl designation.

D) Did lhc client designate samples are hazardous? /

,,. MD or E is yes. select Hazards below.

PCB's Flammable Foreign Soil RCRA Asbeslos Beryllium Other.

El Did the RSO identifv possible hazards?

Sample Receipt Criteria ~

.. z< z" Comments/Qualifiers (Required for Non-Confonning Items)

Shipping containers received intact and Circle Applicable: Seals broken Dmnuged container Leaking container Other (describe) 1 scaled?

Chain of custody documents included Circle Applicable: Client con1ac1cd and provided COC COC crca1cd upon receipt 2

with shipment?

3 Samples requiring cold preservation within (0 < 6 deg. CJ?*

Daily check performed and passed on IR Preservation MetlK,<l: Wet kc Ice Packs

all temperatures are recorded in Celsius Temperature Device Serial #: T - ..-. .. 7 7 Dry ice None Other:

TEMP: :Z.1 4 Sccondm)' Temperature Device Serial# (If Applicable):

temperature gun?

Circle Af'lplicablc: Seals hrokcn D,1ma!,.1Cd container Leaking container Other (describe) 5 Sample containers intact and sealed?

Samples requiring chemical preservation Sample lD's and Containers Aflcctcd:

6 at proper pH? If Prcscrv-,llion added, Lot#:

If Yes, are Encores or Soil Kits present for solids? Yes No NA (If yes. take lo VOA Freezer)

Do liquid VOA vials contain acid preservation? Yes No NA_(lfonknown. select No)

Do any samples require Volatile 7 JJ,re liquid VOA vials free ofheadspace? Yes_ No_ NA_

Analysis?

.,,,. Sample lD's and containers affcclcd:

!D's and tests affecled:

8 Samples received within holding lime?

Sample !D's on COC match !D's on fD's and container:s affected:

9 bottles?

Date & time on COC match date & time Circle Applicable: No dales on containers No times on containers COC missing info Other (describe) 10 on bottles?

Number of containers received match Circle Applicable: No container count on COC Other (describe) 11 number indicated on COC?

Are sample containers identifiable as 12 /

GEL orovided bv use of GEL labels?

COC form is properly signed in Circle Applicable: Not relinquished Other (describe) 13 relinquished/received sections?

Comments (Use Continuation Form if needed):

PM (or PMA) review: lniti,tls VVlK Date I/ 'J, 'l J1/l Page J_ of l_

I I GL-CHL-SR-001 Rev 7 Page 39 of 44 SDG: 590180

List of current GEL Certifications as of 30 August 2022 State Certification Alabama 42200 Alaska 17018 Alaska Drinking Water SC00012 Arkansas 880651 CLIA 42D0904046 California 2940 Colorado SC00012 Connecticut PH0169 DoD ELAP/ ISO17025 A2LA 2567.01 Florida NELAP E87156 Foreign Soils Permit P3301500283, P3301500253 Georgia SC00012 Georgia SDWA 967 Hawaii SC00012 Idaho SC00012 Illinois NELAP 200029 Indiana CSC01 Kansas NELAP E10332 Kentucky SDWA 90129 Kentucky Wastewater 90129 Louisiana Drinking Water LA024 Louisiana NELAP 03046 (AI33904)

Maine 2019020 Maryland 270 Massachusetts MSC012 Massachusetts PFAS Approv Letter Michigan 9976 Mississippi SC00012 Nebraska NEOS2613 Nevada SC0001220233 New Hampshire NELAP 2054 New Jersey NELAP SC002 New Mexico SC00012 New York NELAP 11501 North Carolina 233 North Carolina SDWA 45709 North Dakota R158 Oklahoma 2019165 Pennsylvania NELAP 6800485 Puerto Rico SC00012 S. Carolina Radiochem 10120002 Sanitation Districts of L 9255651 South Carolina Chemistry 10120001 Tennessee TN 02934 Texas NELAP T1047042352220 Utah NELAP SC00012202136 Vermont VT87156 Virginia NELAP 460202 Washington C780 Page 40 of 44 SDG: 590180

Radiochemistry Technical Case Narrative Zion Solutions SDG #: 590180 Product: Dry Weight Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2305626 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 590180001 L1-12201C-FIGS-201-SS 590180002 L1-12201C-FIGS-201-SB 590180003 L1-12201C-FIGS-202-SS 590180004 L1-12201D-FIGS-303-SS 590180005 L1-12201E-FIGS-202-SS 590180006 L1-12102A-FIGS-201-SB 590180007 L1-12102A-FIGS-202-SS 590180008 L1-12102A-FIGS-206-SS 590180009 L1-12103A-FIGS-301-SS 590180010 L1-12103A-FIGS-301-SB 590180011 L1-12103A-FIGS-302-SS The samples in this SDG were analyzed on an "as received" basis.

Data Summary:

All sample data provided in this report met the acceptance criteria specified in the analytical methods and procedures for initial calibration, continuing calibration, instrument controls and process controls where applicable, with the following exceptions.

Miscellaneous Information Additional Comments These samples are relogs. The data for this batch was transferred from batches 2293364 and 2293365.

Product: Gammaspec, Gamma, Solid (Requested List)

Analytical Method: DOE HASL 300, 4.5.2.3/Ga-01-R Analytical Procedure: GL-RAD-A-013 REV# 27 Analytical Batch: 2305714 Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2305626 Page 41 of 44 SDG: 590180

The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 590180001 L1-12201C-FIGS-201-SS 590180002 L1-12201C-FIGS-201-SB 590180003 L1-12201C-FIGS-202-SS 590180004 L1-12201D-FIGS-303-SS 590180005 L1-12201E-FIGS-202-SS 590180006 L1-12102A-FIGS-201-SB 590180007 L1-12102A-FIGS-202-SS 590180008 L1-12102A-FIGS-206-SS 590180009 L1-12103A-FIGS-301-SS 590180010 L1-12103A-FIGS-301-SB 590180011 L1-12103A-FIGS-302-SS 1205169262 Method Blank (MB) 1205169263 590180001(L1-12201C-FIGS-201-SS) Sample Duplicate (DUP) 1205169264 Laboratory Control Sample (LCS)

The samples in this SDG were analyzed on a "dry weight" basis.

Data Summary:

There are no exceptions, anomalies or deviations from the specified methods. All sample data provided in this report met the acceptance criteria specified in the analytical methods and procedures for initial calibration, continuing calibration, instrument controls and process controls where applicable.

Qualifier Information Qualifier Reason Analyte Sample Client Sample Results are considered a UI false positive Bismuth-212 590180007 L1-12102A-FIGS-202-SS due to high peak-width.

Results are considered a UI false positive Bismuth-211 590180001 L1-12201C-FIGS-201-SS due to low abundance.

Bismuth-211 590180002 L1-12201C-FIGS-201-SB Bismuth-211 590180003 L1-12201C-FIGS-202-SS Bismuth-211 590180005 L1-12201E-FIGS-202-SS Bismuth-211 590180007 L1-12102A-FIGS-202-SS Bismuth-211 590180008 L1-12102A-FIGS-206-SS Bismuth-211 590180010 L1-12103A-FIGS-301-SB Bismuth-211 1205169263 L1-12201C-FIGS-201-SS(590180001DUP)

Page 42 of 44 SDG: 590180

Cesium-134 590180011 L1-12103A-FIGS-302-SS Product: GFPC, Sr90, Solid Analytical Method: EPA 905.0 Modified/DOE RP501 Rev. 1 Modified Analytical Procedure: GL-RAD-A-004 REV# 22 Analytical Batch: 2305650 Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2305626 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 590180001 L1-12201C-FIGS-201-SS 590180002 L1-12201C-FIGS-201-SB 590180003 L1-12201C-FIGS-202-SS 590180004 L1-12201D-FIGS-303-SS 590180005 L1-12201E-FIGS-202-SS 590180006 L1-12102A-FIGS-201-SB 590180007 L1-12102A-FIGS-202-SS 590180008 L1-12102A-FIGS-206-SS 590180009 L1-12103A-FIGS-301-SS 590180010 L1-12103A-FIGS-301-SB 590180011 L1-12103A-FIGS-302-SS 1205169136 Method Blank (MB) 1205169137 590180011(L1-12103A-FIGS-302-SS) Sample Duplicate (DUP) 1205169138 Laboratory Control Sample (LCS)

The samples in this SDG were analyzed on a "dry weight" basis.

Data Summary:

All sample data provided in this report met the acceptance criteria specified in the analytical methods and procedures for initial calibration, continuing calibration, instrument controls and process controls where applicable, with the following exceptions.

Preparation Information Homogenous Matrix Samples were non-homogenous matrix. samples are grainy and sandy Product: Liquid Scint Ni63, Solid Analytical Method: DOE RESL Ni-1, Modified Analytical Procedure: GL-RAD-A-022 REV# 19 Analytical Batch: 2307619 Page 43 of 44 SDG: 590180

Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2305626 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 590180001 L1-12201C-FIGS-201-SS 590180002 L1-12201C-FIGS-201-SB 590180003 L1-12201C-FIGS-202-SS 590180004 L1-12201D-FIGS-303-SS 590180005 L1-12201E-FIGS-202-SS 590180006 L1-12102A-FIGS-201-SB 590180007 L1-12102A-FIGS-202-SS 590180008 L1-12102A-FIGS-206-SS 590180009 L1-12103A-FIGS-301-SS 590180010 L1-12103A-FIGS-301-SB 590180011 L1-12103A-FIGS-302-SS 1205173124 Method Blank (MB) 1205173125 590180001(L1-12201C-FIGS-201-SS) Sample Duplicate (DUP) 1205173126 Laboratory Control Sample (LCS)

The samples in this SDG were analyzed on a "dry weight" basis.

Data Summary:

There are no exceptions, anomalies or deviations from the specified methods. All sample data provided in this report met the acceptance criteria specified in the analytical methods and procedures for initial calibration, continuing calibration, instrument controls and process controls where applicable.

Certification Statement Where the analytical method has been performed under NELAP certification, the analysis has met all of the requirements of the NELAC standard unless otherwise noted in the analytical case narrative.

Page 44 of 44 SDG: 590180

ML22279A988

Text

SUMMARY

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