Text

Revised Final Status Survey Release Record, Area Under the Turbine Building, Survey Unit 12205A, Revision 2
	ML22237A212
Person / Time
Site:	Zion File:ZionSolutions icon.png
Issue date:	08/11/2022
From:	Graham J; ZionSolutions
To:	; Office of Nuclear Material Safety and Safeguards
Shared Package
ML22237A206	List: ML22237A207; ML22237A208; ML22237A209; ML22237A210; ML22237A211; ML22237A212;
References
	ZS-2022-040
	Download: ML22237A212 (207)
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ZION STATION RESTORATION PROJECT FINAL STATUS SURVEY RELEASE RECORD AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A REVISION 2

Digitally signed by Robert F Yetter III Robert F DN: C=US, O=EnergySolutions, CN=Robert F Yetter III, E=rfyetteriii@energysolutions.com Reason: I have reviewed this document Yetter III Location: your signing location here Date: 2022-08-15 12:49:48 Foxit PhantomPDF Version: 9.7.0 Digitally signed by Robert F_ Yetter Robert F_ DN: C=US, OU=EnergySolutions, CN=Robert F_

Yetter, E=rfyetter@energysolutions.com Reason: I am the author of this document Yetter Location: your signing location here Date: 2022-08-15 13:26:49 Foxit PhantomPDF Version: 9.7.0

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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........................................................................................ 19

7. SURVEY RESULTS............................................................................................................ 20

8. QUALITY CONTROL ....................................................................................................... 26

9. INVESTIGATIONS AND RESULTS ............................................................................... 26

10. REMEDIATION AND RESULTS ..................................................................................... 27

11. CHANGES FROM THE SURVEY PLAN ....................................................................... 27

12. DATA QUALITY ASSESSMENT (DQA) ........................................................................ 27

13. ANOMALIES....................................................................................................................... 27

14. CONCLUSION .................................................................................................................... 27

15. REFERENCES .................................................................................................................... 28

16. ATTACHMENTS ................................................................................................................ 29 ATTACHMENT 1 - FIGURE AND MAPS .......................................................................... 30 ATTACHMENT 2 - SCAN DATA ....................................................................................... 33 ATTACHMENT 3 - CONSULTATION TRIGGERS FOR RESIDENTIAL AND COMMERCIAL/INDUSTRIAL SOIL CONTAMINATION ............. 39 ATTACHMENT 4 - SIGN TEST .......................................................................................... 41 ATTACHMENT 5 - QC SAMPLE ASSESSMENT.............................................................. 43 ATTACHMENT 6 - GRAPHICAL PRESENTATIONS ...................................................... 45 ATTACHMENT 7 - GEL LABS CERTIFICATE OF ANALYSIS REPORTS .................... 52

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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 ..................................................................................................... 18 Table 10 - Instruments and Detectors ..................................................................................................... 20 Table 11 - Synopsis of Scan Results....................................................................................................... 20 Table 12 - Summary of Gamma Spectroscopy Results for Surface Soil Samples Comprising the Statistical Sample Population ................................................................................................................. 23 Table 13 - Summary of Gamma Spectroscopy Results for Subsurface Soil Samples............................ 23 Table 14 - Surrogate Ratio Analysis Results ......................................................................................... 24 Table 15 - Summary of Gamma Spectroscopy Results for QC Soil Samples ........................................ 24 Table 16 - Sum-of-Fractions for Individual Surface Soil Samples, when compared to the OpDCGLs (Systematic) ............................................................................................................................................ 25 Table 17 - Sum-of-Fractions for Individual Subsurface Soil Samples, when compared to the OpDCGLs

................................................................................................................................................................ 26 Table 18 - Sum-of-Fractions for Individual QC Soil Samples, when compared to the OpDCGLs ....... 26 Table 19 - Basic Statistical Properties of Systematic Sample Population .............................................. 26 LIST OF FIGURES Figure 1 - The The Five Class 1 Open Land Survey Units Created from the Original Class 2 Survey Unit 12205 ................................................................................................................................................ 8

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A

1. EXECUTIVE

SUMMARY

Final Status Survey (FSS) was performed on this survey unit in September of 2019. Following the completion of this FSS, in May of 2022, a decision was made to add additional soil from an off-site source to raise the final grade level in this survey unit. This FSS was performed following the addition of this soil to the survey unit.

This FSS Release Record for Survey Unit 12205A, Area Under the Turbine Building, 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).

A FSS package (L1-12205A-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. No areas of elevated activity were detected during the scans. The analytical results for the systematic soil samples taken in Survey Unit 12205A 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 0.046. The mean OpSOF for the systematic samples was 0.016. The mean SOF (BcSOF), when the analytical results were compared to the Base Case DCGLs (BcDCGL), was 0.0041, which results in a dose assigned to the survey unit of 0.104 mrem/yr. Therefore, the null hypothesis is rejected and survey unit 12205A is acceptable for unrestricted release.

2. SURVEY UNIT DESCRIPTION Survey Unit 12205A, Area Under the Turbine Building, is a Class 1 open land survey unit and is 1,809 m2 in size. It is bounded on the west by survey units 12104 and 12105; the south by 12205B, the east by 12103 and 12204A; and the north by 12201C through 12201E.

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.

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A

3. CLASSIFICATION BASIS Survey unit 12205A was classified in accordance with ZionSolutions procedure ZS-LT-300-001-002, Survey Unit Classification (Reference 5).

The Zion Station Historical Site Assessment (HSA) (Reference 6) did not designate a survey unit for this area. Subsequently, this area was designated as survey unit 12205, a Class 2 open land survey unit, and described as the Area Around the Turbine Building in Table 2-4 of the ZSRP LTP. On July 15, 2016, due to changing radiological and operational conditions brought about by site decommissioning activities inside or adjacent to this area, Survey Unit 12205 was reclassified as a Class 1, and divided into 5 survey units: 12205A, 12205B, 12205C, 12205D and 12205E. Figure 1 below shows the boundaries of the resulting Class 1 survey units Figure 1 - The The Five Class 1 Open Land Survey Units Created from the Original Class 2 Survey Unit 12205

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A A Final Status Survey of 12205A was completed in September of 2019 as a Class 1 survey unit.

This classification remains applicable to this survey design.

A Radiological Engineer (RE)/Characterization/License 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 12205A 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 12205A 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

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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 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

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A modeling parameters that were used to calculate the site-specific DCGLs for soils (referred to as BcDCGL in this Release Record).

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

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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 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

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A checks were required prior to issuance and after the instrument had been used. Control and 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 12205A. 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 12205A, 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. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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.

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:

1809

To calculate the area bounded by the systematic samples: = = = 106.4 2 17

From the LTP, Table 5-16, the Area Factors for the next larger area, 300 m2 area were used:

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

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, L1-12205A-FQGS-316-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 L1-12205A-FSGS-313-SB and L1-12205A-FSGS-315-SB were selected for this survey unit. Location L1-12205A-FSGS-313-SB met refusal at a depth of 35

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A centimeters.

The locations of the seventeen (17) systematic samples are listed in Table 8. Note, samples were numbered starting with 301. This is because systematic sample numbers 1 to 17 and 201 through 217 were used 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)

L1-12205A-FSGS-301-SS 641805.45 343721.96 L1-12205A-FSGS-302-SS 641805.45 343733.05 L1-12205A-FSGS-303-SS 641815.05 343694.25 L1-12205A-FSGS-304-SS 641815.05 343705.34 L1-12205A-FSGS-305-SS 641815.05 343716.42 L1-12205A-FSGS-306-SS 641815.05 343727.51 L1-12205A-FSGS-307-SS 641815.05 343738.59 L1-12205A-FSGS-308-SS 641824.65 343688.71 L1-12205A-FSGS-309-SS 641824.65 343699.80 L1-12205A-FSGS-310-SS 641824.65 343710.88 L1-12205A-FSGS-311-SS 641824.65 343721.96 L1-12205A-FSGS-312-SS 641824.65 343733.05 L1-12205A-FSGS-313-SS 641824.65 343744.13 L1-12205A-FSGS-314-SS 641834.25 343694.25 L1-12205A-FSGS-315-SS 641834.25 343705.34 L1-12205A-FSGS-316-SS 641834.25 343716.42 L1-12205A-FSGS-317-SS 641834.25 343727.51 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

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A HTD ROC.

Two (2) soil samples, L1-12205A-FSGS-311-SS and L1-12205A-FSGS-312-SS, were selected to meet the requirement that 10% of the samples collected for FSS be analyzed for HTD ROC. These samples were selected based on exhibiting the highest OpSOF. Each sample was sent off-site (GEL Laboratories) for HTD analysis as specified in the FSS Sample Plan.

Table 9 provides a synopsis of the survey design for survey unit 12205A.

Table 9 - Synopsis of Survey Design FEATURE DESIGN CRITERIA BASIS Survey Unit Area 1,809 m2 GPS measurements of area

= 0.30

UBGR = SOF of 1

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

Type I error = 0.05

Type II error = 0.05

/ = 1.67 (MARSSIM Table 5.5)

(LTP Chapter 5, Section Grid Spacing 11.1 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. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A

6. SURVEY IMPLEMENTATION Survey instructions for this FSS were incorporated into and performed in accordance with FSS Sample Plan L1-12205A-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 12205A, 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 have been taken to the appropriate depth within the area of concern as part of the investigation. This threshold was not encountered during the FSS of survey unit 12205A.

FSS field activities were conducted under FSS Sample Plan L1-12205A-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 17, 2022, and concluding on July 5, 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. No areas of elevated activity were detected during the scans. 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 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.

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Table 10 - Instruments and Detectors Instrument/Detector Type Serial # Calibration Due Date Ludlum 2350-1/Ludlum 44-10 266656/PR311750 7/1/20221 Ludlum 2350-1/Ludlum 44-10 304712/PR372143 8/6/2022 Ludlum 2350-1/Ludlum 44-10 304708/PR321892 6/7/2023 Note 1: Instrument not used past calibration due date.

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.

Two (2) 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. Fifty-six (56) 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. No 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 Logged Action Level(1) # of Scan Scan Row Reading Investigation Samples (cpm) Alarms (cpm) 1 4447 4597 0 None 2 4490 4597 0 None 3 4556 4597 0 None 4 4477 4597 0 None 5 5080 5250 0 None 6 5057 5250 0 None 7 5193 5250 0 None 8 5184 5250 0 None 9 5111 5250 0 None 10 5169 5250 0 None 11 5178 5250 0 None 12 5130 5250 0 None 13 5049 5250 0 None 14 5209 5298 0 None 15 5211 5298 0 None 16 5085 5298 0 None

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Table 11 (continued) - Synopsis of Scan Results Highest Logged Action Level(1) # of Scan Scan Row Reading Investigation Samples (cpm) Alarms (cpm) 17 5188 5298 0 None 18 5137 5298 0 None 19 5239 5298 0 None 20 5267 5298 0 None 21 5151 5298 0 None 22 5282 5298 0 None 23 5170 5298 0 None 24 5175 5298 0 None 25 4986 5062 0 None 26 4890 5062 0 None 27 4997 5062 0 None 28 4889 5062 0 None 29 4852 5062 0 None 30 5015 5062 0 None 31 5046 5062 0 None 32 4952 5062 0 None 33 4926 5062 0 None 34 4585 4597 0 None 35 4453 4597 0 None 36 4530 4597 0 None 37 4342 4597 0 None 38 4468 4597 0 None 39 4452 4597 0 None 40 4988 5164 0 None 41 5147 5164 0 None 42 5012 5164 0 None 43 5161 5164 0 None 44 5158 5164 0 None 45 5149 5164 0 None 46 5066 5164 0 None 47 5068 5164 0 None 48 5079 5164 0 None 49 5041 5164 0 None 50 5161 5164 0 None 51 5034 5164 0 None 52 5129 5164 0 None 53 5146 5164 0 None

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Table 11 (continued) - Synopsis of Scan Results Highest Logged Action Level(1) # of Scan Scan Row Reading Investigation Samples (cpm) Alarms (cpm) 54 5094 5164 0 None 55 4818 4871 0 None 56 4831 4871 0 None The action level is based on the measurement Minimum Detectable Count Rate Note 1:

(MDCR) plus background in accordance with the FSS plan Seventeen (17) systematic surface soil samples taken for non-parametric statistical testing, one (1) QC soil sample and two (2) 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 no samples with activity levels above MDA for Cs-137, Co-60 or Cs-134. 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 7.

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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)

L1-12205A-FSGS-301-SS 5.01E-03 3.62E-03 0.00E+00 9.04E-01 0.00E+00 L1-12205A-FSGS-302-SS 0.00E+00 0.00E+00 1.26E-02 0.00E+00 2.52E-05 L1-12205A-FSGS-303-SS 1.21E-03 3.00E-02 0.00E+00 2.18E-01 0.00E+00 L1-12205A-FSGS-304-SS 6.29E-04 1.15E-02 7.53E-03 1.14E-01 1.51E-05 L1-12205A-FSGS-305-SS 2.86E-03 1.83E-02 2.98E-03 5.16E-01 5.96E-06 L1-12205A-FSGS-306-SS 3.32E-03 2.11E-02 0.00E+00 5.99E-01 0.00E+00 L1-12205A-FSGS-307-SS 2.08E-03 1.31E-02 1.17E-02 3.75E-01 2.34E-05 L1-12205A-FSGS-308-SS 4.45E-03 3.67E-03 3.17E-03 8.03E-01 6.34E-06 L1-12205A-FSGS-309-SS 9.02E-03 3.51E-02 9.20E-03 1.63E+00 1.84E-05 L1-12205A-FSGS-310-SS 5.59E-03 0.00E+00 5.97E-04 1.01E+00 1.19E-06 L1-12205A-FSGS-311-SS 1.03E-02 3.88E-02 0.00E+00 1.86E+00 0.00E+00 L1-12205A-FSGS-312-SS 4.01E-02 0.00E+00 5.97E-03 7.24E+00 1.19E-05 L1-12205A-FSGS-313-SS 0.00E+00 1.07E-02 2.79E-03 0.00E+00 5.58E-06 L1-12205A-FSGS-314-SS 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 L1-12205A-FSGS-315-SS 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 L1-12205A-FSGS-316-SS 9.85E-03 2.09E-02 1.73E-02 1.78E+00 3.46E-05 L1-12205A-FSGS-317-SS 1.39E-02 2.57E-02 6.79E-04 2.51E+00 1.36E-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)

L1-12205A-FSGS-313-SB 0.00E+00 2.46E-02 0.00E+00 0.00E+00 0.00E+00 L1-12205A-FSGS-315-SB 0.00E+00 1.49E-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 off-site laboratory, GEL Laboratories, processed the two (2) samples selected for HTD ROC analysis. Samples L1-12205A-FSGS-311-SS and L1-12205A-FSGS-312-SS were selected.

Only HTD radionuclides included as ROC (Ni-63 and Sr-90 for soils) were included in the analysis. All analyses met the required MDC. No ROC was positively detected in 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.

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Table 14 - Surrogate Ratio Analysis Results Sample # L1-12205A-FSGS-311-SS Result Uncertainty MDC ROC >MDC (pCi/g) (pCi/g) (pCi/g)

Co-60 -4.53E-03 2.08E-02 4.17E-02 No Cs-134 4.10E-02 3.01E-02 5.88E-02 No Cs-137 8.97E-03 4.82E-02 5.09E-02 No Ni-63 -1.17E-01 6.23E+00 1.08E+01 No Sr-90 1.82E-02 2.43E-02 4.16E-02 No Sample # L1-12205A-FSGS-312-SS Result Uncertainty MDC ROC >MDC (pCi/g) (pCi/g) (pCi/g)

Co-60 -1.57E-02 2.22E-02 3.99E-02 No Cs-134 2.48E-02 2.59E-02 6.02E-02 No Cs-137 -1.39E-02 2.28E-02 4.20E-02 No Ni-63 2.23E+00 6.64E+00 1.14E+01 No Sr-90 -9.04E-03 1.64E-02 3.23E-02 No The implementation of survey specific QC measures included the collection of one (1) systematic sample (L1-12205A-FQGS-316-SS) for split sample analysis. GEL Laboratories analyzed the designated QC sample. Gamma spectroscopy results (summarized in Table 15) indicate that the concentration of Cs-137, Co-60 and Cs-134 were less than MDC in the sample. 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)

L1-12205A-FQGS-316-SS 0.00E+00 1.82E-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 five (5) 5-meter by 5-meter grids. The QC scan survey was documented on survey 22-0138.

The area covered was 125 m2, 6.9% of the survey unit.

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:

[24]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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 12205A 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.

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 L1-12205A-FSGS-301-SS 4.59E-03 2.09E-03 0.00E+00 9.89E-04 0.00E+00 0.008 L1-12205A-FSGS-302-SS 0.00E+00 0.00E+00 3.47E-03 0.00E+00 8.14E-06 0.003 L1-12205A-FSGS-303-SS 1.11E-03 1.73E-02 0.00E+00 2.39E-04 0.00E+00 0.019 L1-12205A-FSGS-304-SS 5.77E-04 6.64E-03 2.07E-03 1.24E-04 4.87E-06 0.009 L1-12205A-FSGS-305-SS 2.62E-03 1.06E-02 8.21E-04 5.64E-04 1.93E-06 0.015 L1-12205A-FSGS-306-SS 3.04E-03 1.22E-02 0.00E+00 6.55E-04 0.00E+00 0.016 L1-12205A-FSGS-307-SS 1.91E-03 7.56E-03 3.22E-03 4.10E-04 7.56E-06 0.013 L1-12205A-FSGS-308-SS 4.08E-03 2.12E-03 8.73E-04 8.78E-04 2.05E-06 0.008 L1-12205A-FSGS-309-SS 8.27E-03 2.03E-02 2.53E-03 1.78E-03 5.95E-06 0.033 L1-12205A-FSGS-310-SS 5.12E-03 0.00E+00 1.64E-04 1.10E-03 3.86E-07 0.006 L1-12205A-FSGS-311-SS 9.44E-03 2.24E-02 0.00E+00 2.03E-03 0.00E+00 0.034 L1-12205A-FSGS-312-SS 3.68E-02 0.00E+00 1.64E-03 7.91E-03 3.86E-06 0.046 L1-12205A-FSGS-313-SS 0.00E+00 6.17E-03 7.69E-04 0.00E+00 1.80E-06 0.007 L1-12205A-FSGS-314-SS 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.000 L1-12205A-FSGS-315-SS 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.000 L1-12205A-FSGS-316-SS 9.03E-03 1.21E-02 4.77E-03 1.94E-03 1.12E-05 0.028 L1-12205A-FSGS-317-SS 1.27E-02 1.48E-02 1.87E-04 2.74E-03 4.39E-07 0.031 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 = 0.046 Mean Systematic Measurement OpSOF = 0.016

[25]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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 L1-12205A-FSGS-313-SB 0.00E+00 2.16E-02 0.00E+00 0.00E+00 0.00E+00 0.022 L1-12205A-FSGS-315-SB 0.00E+00 1.31E-02 0.00E+00 0.00E+00 0.00E+00 0.013 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 L1-12205A-FQGS-316-SS 0.00E+00 1.05E-02 0.00E+00 0.00E+00 0.00E+00 0.011 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 6.37E-03 3.32E-03 4.01E-02 0.00E+00 0.010 4.26 1.50E-03 3.74E-02 Cs-134 1.37E-02 1.15E-02 3.88E-02 0.00E+00 0.013 6.77 2.02E-03 5.05E-02 Cs-137 4.38E-03 2.79E-03 1.73E-02 0.00E+00 0.005 14.18 3.09E-04 7.73E-03 Ni-63 1.15E+00 5.99E-01 7.24E+00 0.00E+00 1.745 3572.1 3.22E-04 8.05E-03 Sr-90 8.77E-06 5.58E-06 3.46E-05 0.00E+00 0.000 12.09 7.25E-07 1.81E-05 The mean BcSOF for survey unit 12205A is 0.0041 which equates to a dose of 0.104 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 one (1) split sample, L1-12205A-FQGS-316-SS using gamma spectroscopy analysis. The data was evaluated using acceptance criteria specified in ZionSolutions procedure ZS-LT-01. The standard sample and QC sample did not both have a positive result for a gamma-emitting ROC, therefore K-40 was used in the QC comparison.

There was acceptable agreement between field split results when using K-40. Refer to Attachment 5 for data and quality control analysis results.

A QC scan was performed on 6.9% of the survey unit. Using the acceptance criteria specified in ZionSolutions procedure ZS-LT-01, there was acceptable agreement between the standard and comparison scan results.

9. INVESTIGATIONS AND RESULTS No investigations were performed in survey unit 12205A.

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FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A

10. REMEDIATION AND RESULTS No remediation was performed in this survey unit.

11. CHANGES FROM THE SURVEY PLAN There were no addendums to the FSS plan.

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 12205A 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.

[27]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A 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 Operational DCGL or any investigational levels; 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 0.0041, which results in a dose contribution from soil in survey unit 12205A of 0.104 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 12205A 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

[28]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A

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

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

[29]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A ATTACHMENT 1 - FIGURE AND MAPS

[30]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Survey Unit 12205A Final Status Survey Boundaries and Systematic Sample Points

[31]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Survey Unit 12205A Final Status Survey Scan Rows

[32]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A ATTACHMENT 2 - SCAN DATA

[33]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Scan Avg Action Detector Detector M2350-1 Survey Logged Scan Location Date/Time Background Level Type ID ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 PR311750 266656 12205A GS025 6/17/2022 9:50 4662 4357 5062 No 44-10 PR311750 266656 12205A GS025 6/17/2022 9:54 4953 4357 5062 No 44-10 PR311750 266656 12205A GS025 6/17/2022 9:58 4986 4357 5062 No 44-10 PR311750 266656 12205A GS026 6/17/2022 10:02 4664 4357 5062 No 44-10 PR311750 266656 12205A GS026 6/17/2022 10:06 4890 4357 5062 No 44-10 PR311750 266656 12205A GS026 6/17/2022 10:12 4834 4357 5062 No 44-10 PR311750 266656 12205A GS027 6/17/2022 10:16 4997 4357 5062 No 44-10 PR311750 266656 12205A GS027 6/17/2022 10:20 4928 4357 5062 No 44-10 PR311750 266656 12205A GS027 6/17/2022 10:25 4808 4357 5062 No 44-10 PR311750 266656 12205A GS028 6/17/2022 13:05 4767 4357 5062 No 44-10 PR311750 266656 12205A GS028 6/17/2022 13:09 4889 4357 5062 No 44-10 PR311750 266656 12205A GS028 6/17/2022 13:13 4787 4357 5062 No 44-10 PR311750 266656 12205A GS029 6/17/2022 13:18 4687 4357 5062 No 44-10 PR311750 266656 12205A GS029 6/17/2022 13:22 4852 4357 5062 No 44-10 PR311750 266656 12205A GS029 6/17/2022 13:26 4746 4357 5062 No 44-10 PR311750 266656 12205A GS030 6/17/2022 13:36 5015 4357 5062 No 44-10 PR311750 266656 12205A GS030 6/17/2022 13:40 4935 4357 5062 No 44-10 PR311750 266656 12205A GS030 6/17/2022 13:44 4635 4357 5062 No 44-10 PR311750 266656 12205A GS031 6/17/2022 13:49 5046 4357 5062 No 44-10 PR311750 266656 12205A GS031 6/17/2022 13:53 4941 4357 5062 No 44-10 PR311750 266656 12205A GS031 6/17/2022 13:57 4996 4357 5062 No 44-10 PR311750 266656 12205A GS032 6/17/2022 14:03 4917 4357 5062 No 44-10 PR311750 266656 12205A GS032 6/17/2022 14:08 4846 4357 5062 No 44-10 PR311750 266656 12205A GS032 6/17/2022 14:12 4952 4357 5062 No 44-10 PR311750 266656 12205A GS033 6/17/2022 14:19 4926 4357 5062 No 44-10 PR311750 266656 12205A GS033 6/17/2022 14:23 4879 4357 5062 No 44-10 PR311750 266656 12205A GS033 6/17/2022 14:28 4822 4357 5062 No 44-10 PR372143 304712 12205A GS040 6/17/2022 8:16 4958 4451 5164 No 44-10 PR372143 304712 12205A GS040 6/17/2022 8:21 4933 4451 5164 No 44-10 PR372143 304712 12205A GS040 6/17/2022 8:26 4988 4451 5164 No 44-10 PR372143 304712 12205A GS041 6/17/2022 8:31 5059 4451 5164 No 44-10 PR372143 304712 12205A GS041 6/17/2022 8:35 5147 4451 5164 No 44-10 PR372143 304712 12205A GS041 6/17/2022 8:39 5127 4451 5164 No 44-10 PR372143 304712 12205A GS042 6/17/2022 9:17 4943 4451 5164 No 44-10 PR372143 304712 12205A GS042 6/17/2022 9:21 5012 4451 5164 No 44-10 PR372143 304712 12205A GS042 6/17/2022 9:25 5009 4451 5164 No

[34]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Scan Avg Action Detector Detector M2350-1 Survey Logged Scan Location Date/Time Background Level Type ID ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 PR372143 304712 12205A GS043 6/17/2022 9:30 5135 4451 5164 No 44-10 PR372143 304712 12205A GS043 6/17/2022 9:35 5161 4451 5164 No 44-10 PR372143 304712 12205A GS043 6/17/2022 9:39 5005 4451 5164 No 44-10 PR372143 304712 12205A GS044 6/17/2022 9:44 5049 4451 5164 No 44-10 PR372143 304712 12205A GS044 6/17/2022 9:48 5158 4451 5164 No 44-10 PR372143 304712 12205A GS044 6/17/2022 9:52 5079 4451 5164 No 44-10 PR372143 304712 12205A GS045 6/17/2022 9:58 5131 4451 5164 No 44-10 PR372143 304712 12205A GS045 6/17/2022 10:02 5149 4451 5164 No 44-10 PR372143 304712 12205A GS045 6/17/2022 10:07 5054 4451 5164 No 44-10 PR372143 304712 12205A GS046 6/17/2022 10:13 4887 4451 5164 No 44-10 PR372143 304712 12205A GS046 6/17/2022 10:17 5066 4451 5164 No 44-10 PR372143 304712 12205A GS046 6/17/2022 10:22 4988 4451 5164 No 44-10 PR372143 304712 12205A GS047 6/17/2022 10:28 5034 4451 5164 No 44-10 PR372143 304712 12205A GS047 6/17/2022 10:32 5068 4451 5164 No 44-10 PR372143 304712 12205A GS047 6/17/2022 10:36 4980 4451 5164 No 44-10 PR372143 304712 12205A GS048 6/17/2022 13:04 5079 4451 5164 No 44-10 PR372143 304712 12205A GS048 6/17/2022 13:08 5079 4451 5164 No 44-10 PR372143 304712 12205A GS048 6/17/2022 13:13 4998 4451 5164 No 44-10 PR372143 304712 12205A GS049 6/17/2022 13:17 5035 4451 5164 No 44-10 PR372143 304712 12205A GS049 6/17/2022 13:21 5041 4451 5164 No 44-10 PR372143 304712 12205A GS049 6/17/2022 13:25 5021 4451 5164 No 44-10 PR372143 304712 12205A GS050 6/17/2022 13:29 5161 4451 5164 No 44-10 PR372143 304712 12205A GS050 6/17/2022 13:33 5053 4451 5164 No 44-10 PR372143 304712 12205A GS050 6/17/2022 13:38 5085 4451 5164 No 44-10 PR372143 304712 12205A GS051 6/17/2022 13:43 5007 4451 5164 No 44-10 PR372143 304712 12205A GS051 6/17/2022 13:48 5034 4451 5164 No 44-10 PR372143 304712 12205A GS051 6/17/2022 13:52 4745 4451 5164 No 44-10 PR372143 304712 12205A GS052 6/17/2022 13:57 5063 4451 5164 No 44-10 PR372143 304712 12205A GS052 6/17/2022 14:02 5129 4451 5164 No 44-10 PR372143 304712 12205A GS052 6/17/2022 14:06 5008 4451 5164 No 44-10 PR372143 304712 12205A GS053 6/17/2022 14:11 5041 4451 5164 No 44-10 PR372143 304712 12205A GS053 6/17/2022 14:15 5050 4451 5164 No 44-10 PR372143 304712 12205A GS053 6/17/2022 14:19 5146 4451 5164 No 44-10 PR372143 304712 12205A GS054 6/17/2022 14:24 5039 4451 5164 No 44-10 PR372143 304712 12205A GS054 6/17/2022 14:28 5094 4451 5164 No 44-10 PR372143 304712 12205A GS054 6/17/2022 14:32 4983 4451 5164 No

[35]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Scan Avg Action Detector Detector M2350-1 Survey Logged Scan Location Date/Time Background Level Type ID ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 PR372143 304712 12205A GS055 6/18/2022 8:57 4771 4180 4871 No 44-10 PR372143 304712 12205A GS055 6/18/2022 9:01 4818 4180 4871 No 44-10 PR372143 304712 12205A GS055 6/18/2022 9:05 4559 4180 4871 No 44-10 PR372143 304712 12205A GS056 6/18/2022 9:10 4811 4180 4871 No 44-10 PR372143 304712 12205A GS056 6/18/2022 9:14 4831 4180 4871 No 44-10 PR372143 304712 12205A GS056 6/18/2022 9:18 4761 4180 4871 No 44-10 PR311750 266656 12205A GS034 6/18/2022 8:48 4585 3927 4597 No 44-10 PR311750 266656 12205A GS034 6/18/2022 8:53 4556 3927 4597 No 44-10 PR311750 266656 12205A GS034 6/18/2022 8:58 4116 3927 4597 No 44-10 PR311750 266656 12205A GS035 6/18/2022 9:06 4453 3927 4597 No 44-10 PR311750 266656 12205A GS035 6/18/2022 9:11 4418 3927 4597 No 44-10 PR311750 266656 12205A GS035 6/18/2022 9:16 4305 3927 4597 No 44-10 PR311750 266656 12205A GS036 6/18/2022 9:21 4396 3927 4597 No 44-10 PR311750 266656 12205A GS036 6/18/2022 9:26 4530 3927 4597 No 44-10 PR311750 266656 12205A GS036 6/18/2022 9:31 4523 3927 4597 No 44-10 PR311750 266656 12205A GS037 6/18/2022 10:04 4310 3927 4597 No 44-10 PR311750 266656 12205A GS037 6/18/2022 10:08 4342 3927 4597 No 44-10 PR311750 266656 12205A GS037 6/18/2022 10:12 4210 3927 4597 No 44-10 PR311750 266656 12205A GS038 6/18/2022 10:16 4383 3927 4597 No 44-10 PR311750 266656 12205A GS038 6/18/2022 10:19 4163 3927 4597 No 44-10 PR311750 266656 12205A GS038 6/18/2022 10:23 4468 3927 4597 No 44-10 PR311750 266656 12205A GS039 6/18/2022 10:27 4257 3927 4597 No 44-10 PR311750 266656 12205A GS039 6/18/2022 10:31 4384 3927 4597 No 44-10 PR311750 266656 12205A GS039 6/18/2022 10:35 4452 3927 4597 No 44-10 PR311750 266656 12205A GS001 6/18/2022 12:50 4447 3927 4597 No 44-10 PR311750 266656 12205A GS001 6/18/2022 12:55 4221 3927 4597 No 44-10 PR311750 266656 12205A GS001 6/18/2022 13:00 4363 3927 4597 No 44-10 PR311750 266656 12205A GS002 6/18/2022 13:05 4465 3927 4597 No 44-10 PR311750 266656 12205A GS002 6/18/2022 13:08 4490 3927 4597 No 44-10 PR311750 266656 12205A GS002 6/18/2022 13:12 4196 3927 4597 No 44-10 PR311750 266656 12205A GS003 6/18/2022 13:16 4556 3927 4597 No 44-10 PR311750 266656 12205A GS003 6/18/2022 13:20 4488 3927 4597 No 44-10 PR311750 266656 12205A GS003 6/18/2022 13:24 4116 3927 4597 No 44-10 PR311750 266656 12205A GS004 6/18/2022 13:40 4211 3927 4597 No 44-10 PR311750 266656 12205A GS004 6/18/2022 13:44 4477 3927 4597 No 44-10 PR311750 266656 12205A GS004 6/18/2022 13:48 4382 3927 4597 No

[36]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Scan Avg Action Detector Detector M2350-1 Survey Logged Scan Location Date/Time Background Level Type ID ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 PR311750 266656 12205A GS005 6/20/2022 9:06 5017 4530 5250 No 44-10 PR311750 266656 12205A GS005 6/20/2022 9:11 5080 4530 5250 No 44-10 PR311750 266656 12205A GS005 6/20/2022 9:16 5049 4530 5250 No 44-10 PR311750 266656 12205A GS006 6/20/2022 9:21 5057 4530 5250 No 44-10 PR311750 266656 12205A GS006 6/20/2022 9:26 5038 4530 5250 No 44-10 PR311750 266656 12205A GS006 6/20/2022 9:30 4984 4530 5250 No 44-10 PR311750 266656 12205A GS007 6/20/2022 9:37 5095 4530 5250 No 44-10 PR311750 266656 12205A GS007 6/20/2022 9:41 5035 4530 5250 No 44-10 PR311750 266656 12205A GS007 6/20/2022 9:46 5193 4530 5250 No 44-10 PR311750 266656 12205A GS008 6/20/2022 9:50 5184 4530 5250 No 44-10 PR311750 266656 12205A GS008 6/20/2022 9:54 5177 4530 5250 No 44-10 PR311750 266656 12205A GS008 6/20/2022 9:58 5126 4530 5250 No 44-10 PR311750 266656 12205A GS009 6/20/2022 10:04 5093 4530 5250 No 44-10 PR311750 266656 12205A GS009 6/20/2022 10:08 5047 4530 5250 No 44-10 PR311750 266656 12205A GS009 6/20/2022 10:12 5111 4530 5250 No 44-10 PR311750 266656 12205A GS010 6/20/2022 13:40 5102 4530 5250 No 44-10 PR311750 266656 12205A GS010 6/20/2022 13:44 5080 4530 5250 No 44-10 PR311750 266656 12205A GS010 6/20/2022 13:48 5169 4530 5250 No 44-10 PR311750 266656 12205A GS011 6/20/2022 14:09 5163 4530 5250 No 44-10 PR311750 266656 12205A GS011 6/20/2022 14:14 5121 4530 5250 No 44-10 PR311750 266656 12205A GS011 6/20/2022 14:18 5178 4530 5250 No 44-10 PR311750 266656 12205A GS012 6/20/2022 14:23 5086 4530 5250 No 44-10 PR311750 266656 12205A GS012 6/20/2022 14:27 4798 4530 5250 No 44-10 PR311750 266656 12205A GS012 6/20/2022 14:33 5130 4530 5250 No 44-10 PR311750 266656 12205A GS013 6/20/2022 14:37 4913 4530 5250 No 44-10 PR311750 266656 12205A GS013 6/20/2022 14:41 5049 4530 5250 No 44-10 PR311750 266656 12205A GS013 6/20/2022 14:45 4929 4530 5250 No 44-10 PR311750 266656 12205A GS014 6/21/2022 8:23 5209 4575 5298 No 44-10 PR311750 266656 12205A GS014 6/21/2022 8:29 5198 4575 5298 No 44-10 PR311750 266656 12205A GS014 6/21/2022 8:34 5173 4575 5298 No 44-10 PR311750 266656 12205A GS015 6/21/2022 8:40 5211 4575 5298 No 44-10 PR311750 266656 12205A GS015 6/21/2022 8:45 4988 4575 5298 No 44-10 PR311750 266656 12205A GS015 6/21/2022 8:49 4934 4575 5298 No 44-10 PR311750 266656 12205A GS016 6/21/2022 9:04 4894 4575 5298 No 44-10 PR311750 266656 12205A GS016 6/21/2022 9:08 4999 4575 5298 No 44-10 PR311750 266656 12205A GS016 6/21/2022 9:12 5085 4575 5298 No

[37]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Scan Avg Action Detector Detector M2350-1 Survey Logged Scan Location Date/Time Background Level Type ID ID Unit Result Alarms (cpm) (cpm) (cpm) 44-10 PR311750 266656 12205A GS017 6/21/2022 9:19 4909 4575 5298 No 44-10 PR311750 266656 12205A GS017 6/21/2022 9:23 4871 4575 5298 No 44-10 PR311750 266656 12205A GS017 6/21/2022 9:27 5188 4575 5298 No 44-10 PR311750 266656 12205A GS018 6/21/2022 10:00 5137 4575 5298 No 44-10 PR311750 266656 12205A GS018 6/21/2022 10:05 5055 4575 5298 No 44-10 PR311750 266656 12205A GS018 6/21/2022 10:09 5006 4575 5298 No 44-10 PR311750 266656 12205A GS019 6/21/2022 10:13 5239 4575 5298 No 44-10 PR311750 266656 12205A GS019 6/21/2022 10:17 5196 4575 5298 No 44-10 PR311750 266656 12205A GS019 6/21/2022 10:21 4965 4575 5298 No 44-10 PR311750 266656 12205A GS020 6/21/2022 10:25 4997 4575 5298 No 44-10 PR311750 266656 12205A GS020 6/21/2022 10:29 5191 4575 5298 No 44-10 PR311750 266656 12205A GS020 6/21/2022 10:33 5267 4575 5298 No 44-10 PR311750 266656 12205A GS021 6/21/2022 13:05 4989 4575 5298 No 44-10 PR311750 266656 12205A GS021 6/21/2022 13:09 5151 4575 5298 No 44-10 PR311750 266656 12205A GS021 6/21/2022 13:13 5073 4575 5298 No 44-10 PR311750 266656 12205A GS022 6/21/2022 13:17 5226 4575 5298 No 44-10 PR311750 266656 12205A GS022 6/21/2022 13:21 5282 4575 5298 No 44-10 PR311750 266656 12205A GS022 6/21/2022 13:25 5168 4575 5298 No 44-10 PR311750 266656 12205A GS023 6/21/2022 13:29 5170 4575 5298 No 44-10 PR311750 266656 12205A GS023 6/21/2022 13:33 5017 4575 5298 No 44-10 PR311750 266656 12205A GS023 6/21/2022 13:37 5014 4575 5298 No 44-10 PR311750 266656 12205A GS024 6/21/2022 13:41 5071 4575 5298 No 44-10 PR311750 266656 12205A GS024 6/21/2022 13:45 4990 4575 5298 No 44-10 PR311750 266656 12205A GS024 6/21/2022 13:49 5175 4575 5298 No 44-10 PR311750 266656 12205A GS025 6/21/2022 13:53 4715 4575 5298 No 44-10 PR311750 266656 12205A GS025 6/21/2022 14:02 5048 4575 5298 No 44-10 PR311750 266656 12205A GS025 6/21/2022 14:06 5083 4575 5298 No

[38]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A ATTACHMENT 3 - CONSULTATION TRIGGERS FOR RESIDENTIAL AND COMMERCIAL/INDUSTRIAL SOIL CONTAMINATION

[39]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A

[40]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A ATTACHMENT 4 - SIGN TEST

[41]

Digitally signed by Robert F Yetter III Robert F Yetter III DN: C=US, O=EnergySolutions, CN=Robert F Yetter III, E=rfyetteriii@energysolutions.com Reason: I have reviewed this document Location: your signing location here Date: 2022-08-15 12:49:01 Foxit PhantomPDF Version: 9.7.0

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A ATTACHMENT 5 - QC SAMPLE ASSESSMENT

[43]

Digitally signed by Robert F Yetter III DN: C=US, O=EnergySolutions, CN=Robert F Yetter III, E=rfyetteriii@energysolutions.com Robert F Yetter IIIReason: I have reviewed this document Location: your signing location here Date: 2022-08-15 12:49:20 Foxit PhantomPDF Version: 9.7.0

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A ATTACHMENT 6 - GRAPHICAL PRESENTATIONS

[45]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Posting Plot

[46]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A QUANTILE PLOT FOR Co-60 Survey Unit: 12205A Survey Unit Name: Area Under the Turbine Building Mean: 6.37E-03 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

[47]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A QUANTILE PLOT FOR Cs-137 Survey Unit: 12205A Survey Unit Name: Area Under the Turbine Building Mean: 4.38E-03 pCi/g Quantile Plot For Cs-137 2.00E-02 1.80E-02 1.60E-02 Concentration (pCi/g) 1.40E-02 1.20E-02 1.00E-02 8.00E-03 6.00E-03 4.00E-03 2.00E-03 0.00E+00 0% 20% 40% 60% 80% 100%

Percentage

[48]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A HISTOGRAM FOR Co-60 Survey Unit: 12205A Survey Unit Name: Area Under the Turbine Building Mean: 6.37E-03 pCi/g Median: 3.32E-03 pCi/g ST DEV: 0.010 Skew: 2.927 Frequency Plot For Co-60 14 12 12 Frequency 10 8

6 4 3 2 1 1 0 0 0

6.68E-03 1.34E-02 2.01E-02 2.67E-02 3.34E-02 4.01E-02 Upper End Value (pCi/g)

Observation Observation Upper Value Frequency %

6.68E-03 12 71%

1.34E-02 3 18%

2.01E-02 1 6%

2.67E-02 0 0%

3.34E-02 0 0%

4.01E-02 1 6%

TOTAL 17 100%

[49]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A HISTOGRAM FOR Cs-137 Survey Unit: 12205A Survey Unit Name: Area Under the Turbine Building Mean: 4.38E-03 pCi/g Median: 2.79E-03 pCi/g ST DEV: 0.005 Skew: 1.159 Frequency Plot For Cs-137 10 9 9

8 7

Frequency 6

5 4

3 2 2 2 2 1 1 1

0 2.88E-03 5.77E-03 8.65E-03 1.15E-02 1.44E-02 1.73E-02 Upper End Value (pCi/g)

Observation Observation Upper Value Frequency %

2.88E-03 9 53%

5.77E-03 2 12%

8.65E-03 2 12%

1.15E-02 1 6%

1.44E-02 2 12%

1.73E-02 1 6%

TOTAL 17 100%

[50]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A Prospective and Retrospective Power Curves for Survey Unit 12205A MARSSIM Sign Test (Pro\Retrospective) Power alpha=5% n=(17\17) std.dev.=(0.3\0.014) 1 Probability of deciding true mean or median < A.L.

0.9 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

[51]

FSS RELEASE RECORD - REV. 2 AREA UNDER THE TURBINE BUILDING SURVEY UNIT 12205A ATTACHMENT 7 - GEL LABS CERTIFICATE OF ANALYSIS REPORTS

[52]

July 08, 2022 Mr. Gerry Wood Zion Solutions 100 Shiloh Blvd.

Zion, Illinois 60099 Re: Zion Solutions Work Order: 585125

Dear Mr. Wood:

GEL Laboratories, LLC (GEL) appreciates the opportunity to provide the enclosed analytical results for the sample(s) we received on July 06, 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 55 SDG: 585125

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: 585125 GEL Work Order: 585125 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-301-SS Project: ENRG08001 Sample ID: 585125001 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 4.98%

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 0.268 +/-0.124 0.116 +/-0.126 pCi/g MXR1 07/07/22 1124 2286168 1 Bismuth-211 UI 0.000 +/-0.188 0.271 +/-0.364 pCi/g Bismuth-212 U 0.115 +/-0.215 0.451 +/-0.221 pCi/g Bismuth-214 0.130 +/-0.0700 0.0627 +/-0.0710 pCi/g Cesium-134 U 0.00362 +/-0.0173 0.0351 +/-0.0174 0.173 pCi/g Cesium-137 U -0.00948 +/-0.0189 0.0280 +/-0.0194 0.363 pCi/g Cobalt-60 U 0.00501 +/-0.0243 0.0366 +/-0.0244 0.109 pCi/g Europium-152 U -0.0279 +/-0.0395 0.0691 +/-0.0416 0.869 pCi/g Europium-154 U -0.0171 +/-0.0504 0.0913 +/-0.0510 0.799 pCi/g Lead-212 0.230 +/-0.0520 0.0420 +/-0.0554 pCi/g Lead-214 0.247 +/-0.0683 0.0555 +/-0.0712 pCi/g Potassium-40 11.4 +/-0.890 0.244 +/-1.36 pCi/g Thallium-208 0.0683 +/-0.0308 0.0313 +/-0.0314 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-301-SS Project: ENRG08001 Sample ID: 585125001 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-302-SS Project: ENRG08001 Sample ID: 585125002 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 8.3%

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 0.139 +/-0.0947 0.190 +/-0.114 pCi/g MXR1 07/07/22 1124 2286168 1 Bismuth-211 UI 0.000 +/-0.227 0.249 +/-0.312 pCi/g Bismuth-212 U 0.332 +/-0.241 0.526 +/-0.286 pCi/g Bismuth-214 0.134 +/-0.0607 0.0568 +/-0.0619 pCi/g Cesium-134 U -0.0103 +/-0.0182 0.0319 +/-0.0188 0.173 pCi/g Cesium-137 U 0.0126 +/-0.0178 0.0367 +/-0.0188 0.363 pCi/g Cobalt-60 U -0.00833 +/-0.0168 0.0310 +/-0.0172 0.109 pCi/g Europium-152 U -0.000123 +/-0.0383 0.0765 +/-0.0383 0.869 pCi/g Europium-154 U -0.0209 +/-0.0587 0.110 +/-0.0595 0.799 pCi/g Lead-212 0.244 +/-0.0581 0.0442 +/-0.0616 pCi/g Lead-214 0.169 +/-0.0825 0.0659 +/-0.0836 pCi/g Potassium-40 11.0 +/-0.905 0.271 +/-1.37 pCi/g Thallium-208 0.0628 +/-0.0398 0.0310 +/-0.0402 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-302-SS Project: ENRG08001 Sample ID: 585125002 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-303-SS Project: ENRG08001 Sample ID: 585125003 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 9.48%

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 0.243 +/-0.147 0.132 +/-0.149 pCi/g MXR1 07/07/22 1125 2286168 1 Bismuth-211 UI 0.000 +/-0.193 0.293 +/-0.345 pCi/g Bismuth-212 U 0.224 +/-0.466 0.441 +/-0.467 pCi/g Bismuth-214 0.148 +/-0.0816 0.0701 +/-0.0826 pCi/g Cesium-134 U 0.0300 +/-0.0310 0.0426 +/-0.0339 0.173 pCi/g Cesium-137 U -0.000319 +/-0.0182 0.0344 +/-0.0182 0.363 pCi/g Cobalt-60 U 0.00121 +/-0.0234 0.0452 +/-0.0234 0.109 pCi/g Europium-152 U -0.00771 +/-0.0370 0.0733 +/-0.0372 0.869 pCi/g Europium-154 U 0.0248 +/-0.0594 0.124 +/-0.0605 0.799 pCi/g Lead-212 0.250 +/-0.0558 0.0435 +/-0.0598 pCi/g Lead-214 0.226 +/-0.0702 0.0619 +/-0.0727 pCi/g Potassium-40 11.3 +/-1.04 0.310 +/-1.50 pCi/g Thallium-208 0.104 +/-0.0433 0.0311 +/-0.0442 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-303-SS Project: ENRG08001 Sample ID: 585125003 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-304-SS Project: ENRG08001 Sample ID: 585125004 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 5.2%

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 UI 0.000 +/-0.128 0.191 +/-0.183 pCi/g MXR1 07/07/22 1125 2286168 1 Bismuth-211 UI 0.000 +/-0.176 0.248 +/-0.287 pCi/g Bismuth-212 0.669 +/-0.367 0.384 +/-0.372 pCi/g Bismuth-214 0.175 +/-0.0749 0.0561 +/-0.0764 pCi/g Cesium-134 U 0.0115 +/-0.0173 0.0365 +/-0.0181 0.173 pCi/g Cesium-137 U 0.00753 +/-0.0175 0.0340 +/-0.0179 0.363 pCi/g Cobalt-60 U 0.000629 +/-0.0200 0.0383 +/-0.0200 0.109 pCi/g Europium-152 U -0.00940 +/-0.0345 0.0590 +/-0.0348 0.869 pCi/g Europium-154 U 0.0712 +/-0.0509 0.117 +/-0.0605 0.799 pCi/g Lead-212 0.177 +/-0.0697 0.0437 +/-0.0711 pCi/g Lead-214 0.179 +/-0.0640 0.0584 +/-0.0656 pCi/g Potassium-40 10.7 +/-0.827 0.265 +/-1.32 pCi/g Thallium-208 0.0528 +/-0.0330 0.0300 +/-0.0333 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-304-SS Project: ENRG08001 Sample ID: 585125004 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-305-SS Project: ENRG08001 Sample ID: 585125005 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 6.72%

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 0.154 +/-0.133 0.165 +/-0.150 pCi/g MXR1 07/07/22 1156 2286168 1 Bismuth-211 U 0.0584 +/-0.331 0.141 +/-0.338 pCi/g Bismuth-212 U 0.215 +/-0.223 0.462 +/-0.245 pCi/g Bismuth-214 0.182 +/-0.0793 0.0511 +/-0.0816 pCi/g Cesium-134 U 0.0183 +/-0.0140 0.0324 +/-0.0164 0.173 pCi/g Cesium-137 U 0.00298 +/-0.0145 0.0268 +/-0.0146 0.363 pCi/g Cobalt-60 U 0.00286 +/-0.0144 0.0292 +/-0.0145 0.109 pCi/g Europium-152 U 0.0325 +/-0.0345 0.0706 +/-0.0376 0.869 pCi/g Europium-154 U 0.00236 +/-0.0533 0.0965 +/-0.0533 0.799 pCi/g Lead-212 0.144 +/-0.0562 0.0395 +/-0.0588 pCi/g Lead-214 0.214 +/-0.0670 0.0970 +/-0.0696 pCi/g Potassium-40 10.9 +/-0.828 0.232 +/-1.26 pCi/g Thallium-208 0.0584 +/-0.0326 0.0272 +/-0.0331 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-305-SS Project: ENRG08001 Sample ID: 585125005 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-306-SS Project: ENRG08001 Sample ID: 585125006 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 4.92%

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 0.364 +/-0.137 0.125 +/-0.142 pCi/g MXR1 07/07/22 1308 2286168 1 Bismuth-211 UI 0.000 +/-0.297 0.318 +/-0.382 pCi/g Bismuth-212 0.489 +/-0.409 0.429 +/-0.411 pCi/g Bismuth-214 0.159 +/-0.0800 0.0675 +/-0.0812 pCi/g Cesium-134 U 0.0211 +/-0.0242 0.0434 +/-0.0261 0.173 pCi/g Cesium-137 U -0.0310 +/-0.0294 0.0556 +/-0.0327 0.363 pCi/g Cobalt-60 U 0.00332 +/-0.0199 0.0413 +/-0.0200 0.109 pCi/g Europium-152 U -0.0163 +/-0.0361 0.0681 +/-0.0369 0.869 pCi/g Europium-154 U 0.0500 +/-0.0697 0.149 +/-0.0734 0.799 pCi/g Lead-212 0.162 +/-0.0821 0.0549 +/-0.0832 pCi/g Lead-214 0.191 +/-0.108 0.0717 +/-0.109 pCi/g Potassium-40 8.87 +/-0.933 0.363 +/-1.29 pCi/g Thallium-208 0.0486 +/-0.0375 0.0347 +/-0.0378 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-306-SS Project: ENRG08001 Sample ID: 585125006 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-307-SS Project: ENRG08001 Sample ID: 585125007 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 6.44%

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 0.270 +/-0.184 0.145 +/-0.186 pCi/g MXR1 07/07/22 1308 2286168 1 Bismuth-211 0.673 +/-0.376 0.170 +/-0.381 pCi/g Bismuth-212 U 0.433 +/-0.315 0.526 +/-0.317 pCi/g Bismuth-214 0.195 +/-0.0931 0.0614 +/-0.0945 pCi/g Cesium-134 U 0.0131 +/-0.0224 0.0465 +/-0.0232 0.173 pCi/g Cesium-137 U 0.0117 +/-0.0191 0.0403 +/-0.0199 0.363 pCi/g Cobalt-60 U 0.00208 +/-0.0155 0.0338 +/-0.0155 0.109 pCi/g Europium-152 U 0.0149 +/-0.0468 0.0928 +/-0.0473 0.869 pCi/g Europium-154 U 0.0309 +/-0.0553 0.123 +/-0.0570 0.799 pCi/g Lead-212 UI 0.000 +/-0.0738 0.102 +/-0.122 pCi/g Lead-214 0.312 +/-0.0950 0.120 +/-0.0985 pCi/g Potassium-40 10.5 +/-0.997 0.324 +/-1.41 pCi/g Thallium-208 U 0.0324 +/-0.0479 0.0353 +/-0.0480 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-307-SS Project: ENRG08001 Sample ID: 585125007 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-308-SS Project: ENRG08001 Sample ID: 585125008 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 7.58%

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 0.331 +/-0.131 0.119 +/-0.134 pCi/g MXR1 07/07/22 1309 2286168 1 Bismuth-211 U 0.0246 +/-0.435 0.156 +/-0.442 pCi/g Bismuth-212 UI 0.000 +/-0.402 0.394 +/-0.404 pCi/g Bismuth-214 0.179 +/-0.0783 0.0548 +/-0.0799 pCi/g Cesium-134 U 0.00367 +/-0.0159 0.0299 +/-0.0160 0.173 pCi/g Cesium-137 U 0.00317 +/-0.0272 0.0361 +/-0.0272 0.363 pCi/g Cobalt-60 U 0.00445 +/-0.0181 0.0363 +/-0.0182 0.109 pCi/g Europium-152 U 0.0312 +/-0.0377 0.0807 +/-0.0404 0.869 pCi/g Europium-154 U -0.0148 +/-0.0531 0.0978 +/-0.0536 0.799 pCi/g Lead-212 0.213 +/-0.0680 0.0492 +/-0.0702 pCi/g Lead-214 0.259 +/-0.0900 0.0986 +/-0.0925 pCi/g Potassium-40 9.71 +/-0.852 0.255 +/-1.25 pCi/g Thallium-208 0.0617 +/-0.0329 0.0277 +/-0.0334 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-308-SS Project: ENRG08001 Sample ID: 585125008 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-309-SS Project: ENRG08001 Sample ID: 585125009 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-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 0.322 +/-0.115 0.0919 +/-0.119 pCi/g MXR1 07/07/22 1309 2286168 1 Bismuth-211 UI 0.000 +/-0.192 0.247 +/-0.365 pCi/g Bismuth-212 0.473 +/-0.347 0.358 +/-0.350 pCi/g Bismuth-214 0.143 +/-0.0717 0.0597 +/-0.0728 pCi/g Cesium-134 U 0.0351 +/-0.0379 0.0407 +/-0.0412 0.173 pCi/g Cesium-137 U 0.00920 +/-0.0154 0.0316 +/-0.0160 0.363 pCi/g Cobalt-60 U 0.00902 +/-0.0157 0.0344 +/-0.0162 0.109 pCi/g Europium-152 U 0.0114 +/-0.0407 0.0821 +/-0.0410 0.869 pCi/g Europium-154 U 0.0685 +/-0.0494 0.116 +/-0.0586 0.799 pCi/g Lead-212 0.216 +/-0.0612 0.0498 +/-0.0636 pCi/g Lead-214 0.246 +/-0.0695 0.0580 +/-0.0724 pCi/g Potassium-40 10.4 +/-0.865 0.247 +/-1.29 pCi/g Thallium-208 0.0450 +/-0.0317 0.0268 +/-0.0319 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-309-SS Project: ENRG08001 Sample ID: 585125009 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-310-SS Project: ENRG08001 Sample ID: 585125010 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 3.2%

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 0.338 +/-0.143 0.0862 +/-0.146 pCi/g MXR1 07/07/22 1309 2286168 1 Bismuth-211 0.865 +/-0.209 0.121 +/-0.222 pCi/g Bismuth-212 UI 0.000 +/-0.300 0.287 +/-0.302 pCi/g Bismuth-214 UI 0.000 +/-0.0679 0.0957 +/-0.100 pCi/g Cesium-134 U -0.00271 +/-0.0131 0.0247 +/-0.0132 0.173 pCi/g Cesium-137 U 0.000597 +/-0.0146 0.0282 +/-0.0146 0.363 pCi/g Cobalt-60 U 0.00559 +/-0.0164 0.0343 +/-0.0166 0.109 pCi/g Europium-152 U -0.00355 +/-0.0367 0.0680 +/-0.0367 0.869 pCi/g Europium-154 U -0.0269 +/-0.0523 0.0955 +/-0.0537 0.799 pCi/g Lead-212 0.229 +/-0.0482 0.0365 +/-0.0518 pCi/g Lead-214 0.314 +/-0.0759 0.0439 +/-0.0804 pCi/g Potassium-40 9.97 +/-0.797 0.177 +/-1.23 pCi/g Thallium-208 0.0401 +/-0.0297 0.0233 +/-0.0299 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-310-SS Project: ENRG08001 Sample ID: 585125010 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-311-SS Project: ENRG08001 Sample ID: 585125011 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 4.32%

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 U 0.294 +/-0.204 0.326 +/-0.244 pCi/g MXR1 07/07/22 1310 2286168 1 Bismuth-211 UI 0.000 +/-0.250 0.360 +/-0.370 pCi/g Bismuth-212 UI 0.000 +/-0.635 0.556 +/-0.637 pCi/g Bismuth-214 UI 0.000 +/-0.119 0.0945 +/-0.119 pCi/g Cesium-134 U 0.0388 +/-0.0301 0.0667 +/-0.0350 0.173 pCi/g Cesium-137 U -0.00352 +/-0.0223 0.0426 +/-0.0224 0.363 pCi/g Cobalt-60 U 0.0103 +/-0.0343 0.0721 +/-0.0346 0.109 pCi/g Europium-152 U -0.0153 +/-0.0664 0.116 +/-0.0667 0.869 pCi/g Europium-154 U -0.0646 +/-0.0811 0.139 +/-0.0864 0.799 pCi/g Lead-212 0.235 +/-0.0738 0.0624 +/-0.0759 pCi/g Lead-214 0.216 +/-0.0909 0.101 +/-0.0927 pCi/g Potassium-40 9.81 +/-1.16 0.399 +/-1.46 pCi/g Thallium-208 0.0797 +/-0.0652 0.0414 +/-0.0656 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-311-SS Project: ENRG08001 Sample ID: 585125011 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-312-SS Project: ENRG08001 Sample ID: 585125012 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: .282%

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 0.246 +/-0.105 0.0812 +/-0.108 pCi/g MXR1 07/07/22 1310 2286168 1 Bismuth-211 UI 0.000 +/-0.233 0.281 +/-0.380 pCi/g Bismuth-212 U 0.0633 +/-0.261 0.497 +/-0.263 pCi/g Bismuth-214 0.123 +/-0.0724 0.0638 +/-0.0731 pCi/g Cesium-134 U -0.00154 +/-0.0177 0.0350 +/-0.0177 0.173 pCi/g Cesium-137 U 0.00597 +/-0.0161 0.0322 +/-0.0164 0.363 pCi/g Cobalt-60 U 0.0401 +/-0.0372 0.0436 +/-0.0416 0.109 pCi/g Europium-152 U -0.00754 +/-0.0361 0.0709 +/-0.0363 0.869 pCi/g Europium-154 U -0.0332 +/-0.0578 0.101 +/-0.0598 0.799 pCi/g Lead-212 0.229 +/-0.0578 0.0494 +/-0.0610 pCi/g Lead-214 0.238 +/-0.0845 0.0543 +/-0.0868 pCi/g Potassium-40 11.6 +/-0.959 0.334 +/-1.53 pCi/g Thallium-208 U 0.0378 +/-0.0217 0.0461 +/-0.0278 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-312-SS Project: ENRG08001 Sample ID: 585125012 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-313-SS Project: ENRG08001 Sample ID: 585125013 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 4.56%

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 0.200 +/-0.175 0.115 +/-0.176 pCi/g MXR1 07/07/22 1310 2286168 1 Bismuth-211 U 0.0902 +/-0.492 0.159 +/-0.496 pCi/g Bismuth-212 U 0.192 +/-0.521 0.423 +/-0.521 pCi/g Bismuth-214 0.199 +/-0.0882 0.0551 +/-0.0898 pCi/g Cesium-134 U 0.0107 +/-0.0213 0.0422 +/-0.0219 0.173 pCi/g Cesium-137 U 0.00279 +/-0.0159 0.0312 +/-0.0159 0.363 pCi/g Cobalt-60 U -0.00147 +/-0.0155 0.0312 +/-0.0156 0.109 pCi/g Europium-152 U 0.0511 +/-0.0437 0.0889 +/-0.0496 0.869 pCi/g Europium-154 U -0.0406 +/-0.0628 0.111 +/-0.0655 0.799 pCi/g Lead-212 0.197 +/-0.0829 0.0511 +/-0.0845 pCi/g Lead-214 0.246 +/-0.0806 0.109 +/-0.0830 pCi/g Potassium-40 10.8 +/-0.936 0.383 +/-1.40 pCi/g Thallium-208 0.0577 +/-0.0308 0.0253 +/-0.0312 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-313-SS Project: ENRG08001 Sample ID: 585125013 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-313-SB Project: ENRG08001 Sample ID: 585125014 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 6.37%

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 0.313 +/-0.174 0.318 +/-0.225 pCi/g MXR1 07/07/22 1311 2286168 1 Bismuth-211 U 0.00165 +/-0.599 0.213 +/-0.605 pCi/g Bismuth-212 U 0.524 +/-0.541 0.572 +/-0.543 pCi/g Bismuth-214 0.203 +/-0.102 0.0957 +/-0.103 pCi/g Cesium-134 U 0.0246 +/-0.0219 0.0523 +/-0.0246 0.173 pCi/g Cesium-137 U -0.0106 +/-0.0246 0.0482 +/-0.0251 0.363 pCi/g Cobalt-60 U -0.0102 +/-0.0230 0.0438 +/-0.0235 0.109 pCi/g Europium-152 U -0.00314 +/-0.0566 0.104 +/-0.0567 0.869 pCi/g Europium-154 U -0.0169 +/-0.0737 0.146 +/-0.0741 0.799 pCi/g Lead-212 0.282 +/-0.0668 0.0592 +/-0.0708 pCi/g Lead-214 0.296 +/-0.115 0.157 +/-0.118 pCi/g Potassium-40 8.89 +/-1.15 0.416 +/-1.41 pCi/g Thallium-208 0.0579 +/-0.0543 0.0489 +/-0.0545 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-313-SB Project: ENRG08001 Sample ID: 585125014 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-314-SS Project: ENRG08001 Sample ID: 585125015 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 4.84%

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 0.259 +/-0.161 0.267 +/-0.200 pCi/g MXR1 07/07/22 1311 2286168 1 Bismuth-211 UI 0.000 +/-0.246 0.317 +/-0.365 pCi/g Bismuth-212 U 0.245 +/-0.332 0.686 +/-0.350 pCi/g Bismuth-214 UI 0.000 +/-0.0822 0.144 +/-0.134 pCi/g Cesium-134 U -0.00260 +/-0.0253 0.0503 +/-0.0254 0.173 pCi/g Cesium-137 U -0.00723 +/-0.0268 0.0455 +/-0.0270 0.363 pCi/g Cobalt-60 U -0.0209 +/-0.0258 0.0421 +/-0.0275 0.109 pCi/g Europium-152 U 0.00112 +/-0.0448 0.0905 +/-0.0448 0.869 pCi/g Europium-154 U -0.000347 +/-0.0742 0.146 +/-0.0742 0.799 pCi/g Lead-212 0.249 +/-0.0631 0.0446 +/-0.0666 pCi/g Lead-214 0.214 +/-0.0891 0.0669 +/-0.0907 pCi/g Potassium-40 9.72 +/-1.16 0.506 +/-1.42 pCi/g Thallium-208 0.0481 +/-0.0394 0.0400 +/-0.0397 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-314-SS Project: ENRG08001 Sample ID: 585125015 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-315-SS Project: ENRG08001 Sample ID: 585125016 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 4.27%

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 +/-0.112 0.216 +/-0.151 pCi/g MXR1 07/07/22 1311 2286168 1 Bismuth-211 UI 0.000 +/-0.409 0.156 +/-0.413 pCi/g Bismuth-212 U 0.0820 +/-0.244 0.476 +/-0.247 pCi/g Bismuth-214 0.139 +/-0.0878 0.0711 +/-0.0886 pCi/g Cesium-134 UI 0.000 +/-0.0302 0.0402 +/-0.0398 0.173 pCi/g Cesium-137 U -0.00331 +/-0.0162 0.0306 +/-0.0162 0.363 pCi/g Cobalt-60 U -0.00603 +/-0.0187 0.0358 +/-0.0189 0.109 pCi/g Europium-152 U -0.0168 +/-0.0444 0.0763 +/-0.0450 0.869 pCi/g Europium-154 U 0.0737 +/-0.0581 0.138 +/-0.0673 0.799 pCi/g Lead-212 0.225 +/-0.0774 0.0572 +/-0.0800 pCi/g Lead-214 0.223 +/-0.0813 0.116 +/-0.0836 pCi/g Potassium-40 10.8 +/-0.967 0.307 +/-1.44 pCi/g Thallium-208 0.0623 +/-0.0342 0.0382 +/-0.0346 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-315-SS Project: ENRG08001 Sample ID: 585125016 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-315-SB Project: ENRG08001 Sample ID: 585125017 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 9.31%

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 0.294 +/-0.150 0.145 +/-0.152 pCi/g MXR1 07/07/22 1312 2286168 1 Bismuth-211 UI 0.000 +/-0.251 0.280 +/-0.351 pCi/g Bismuth-212 U 0.174 +/-0.274 0.562 +/-0.286 pCi/g Bismuth-214 0.125 +/-0.0727 0.0723 +/-0.0737 pCi/g Cesium-134 U 0.0149 +/-0.0185 0.0394 +/-0.0197 0.173 pCi/g Cesium-137 U -0.000881 +/-0.0159 0.0308 +/-0.0159 0.363 pCi/g Cobalt-60 U -0.0154 +/-0.0195 0.0327 +/-0.0207 0.109 pCi/g Europium-152 U 0.0291 +/-0.0386 0.0837 +/-0.0409 0.869 pCi/g Europium-154 U 0.0132 +/-0.0704 0.141 +/-0.0706 0.799 pCi/g Lead-212 0.221 +/-0.0525 0.0458 +/-0.0557 pCi/g Lead-214 0.194 +/-0.0912 0.0588 +/-0.0927 pCi/g Potassium-40 9.73 +/-0.993 0.404 +/-1.29 pCi/g Thallium-208 0.0862 +/-0.0365 0.0237 +/-0.0375 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-315-SB Project: ENRG08001 Sample ID: 585125017 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-316-SS Project: ENRG08001 Sample ID: 585125018 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 5.4%

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 0.198 +/-0.127 0.209 +/-0.156 pCi/g MXR1 07/07/22 1312 2286168 1 Bismuth-211 UI 0.000 +/-0.211 0.259 +/-0.327 pCi/g Bismuth-212 U 0.283 +/-0.261 0.559 +/-0.291 pCi/g Bismuth-214 0.224 +/-0.0683 0.0685 +/-0.0708 pCi/g Cesium-134 U 0.0209 +/-0.0189 0.0418 +/-0.0212 0.173 pCi/g Cesium-137 U 0.0173 +/-0.0186 0.0396 +/-0.0202 0.363 pCi/g Cobalt-60 U 0.00985 +/-0.0227 0.0469 +/-0.0231 0.109 pCi/g Europium-152 U -0.00414 +/-0.0459 0.0785 +/-0.0459 0.869 pCi/g Europium-154 U 0.0145 +/-0.0693 0.137 +/-0.0696 0.799 pCi/g Lead-212 0.192 +/-0.0693 0.0485 +/-0.0712 pCi/g Lead-214 0.197 +/-0.0766 0.0555 +/-0.0784 pCi/g Potassium-40 11.2 +/-1.04 0.351 +/-1.54 pCi/g Thallium-208 0.0831 +/-0.0409 0.0310 +/-0.0415 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-316-SS Project: ENRG08001 Sample ID: 585125018 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FQGS-316-SS Project: ENRG08001 Sample ID: 585125019 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 3.97%

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 0.183 +/-0.137 0.132 +/-0.138 pCi/g MXR1 07/07/22 1312 2286168 1 Bismuth-211 UI 0.000 +/-0.463 0.160 +/-0.466 pCi/g Bismuth-212 U 0.185 +/-0.243 0.503 +/-0.257 pCi/g Bismuth-214 0.182 +/-0.0815 0.0613 +/-0.0829 pCi/g Cesium-134 U 0.0182 +/-0.0310 0.0390 +/-0.0321 0.173 pCi/g Cesium-137 U -0.00226 +/-0.0165 0.0313 +/-0.0166 0.363 pCi/g Cobalt-60 U -0.0163 +/-0.0217 0.0372 +/-0.0230 0.109 pCi/g Europium-152 U -0.0561 +/-0.0421 0.0718 +/-0.0493 0.869 pCi/g Europium-154 U -0.0351 +/-0.0585 0.104 +/-0.0607 0.799 pCi/g Lead-212 0.246 +/-0.0635 0.0523 +/-0.0671 pCi/g Lead-214 0.241 +/-0.0742 0.108 +/-0.0768 pCi/g Potassium-40 10.0 +/-0.890 0.244 +/-1.32 pCi/g Thallium-208 U 0.0215 +/-0.0509 0.0299 +/-0.0509 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FQGS-316-SS Project: ENRG08001 Sample ID: 585125019 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-317-SS Project: ENRG08001 Sample ID: 585125020 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 1.03%

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 0.169 +/-0.170 0.215 +/-0.187 pCi/g MXR1 07/07/22 1927 2286168 1 Bismuth-211 UI 0.000 +/-0.256 0.311 +/-0.374 pCi/g Bismuth-212 U 0.0596 +/-0.296 0.579 +/-0.297 pCi/g Bismuth-214 U 0.100 +/-0.0604 0.103 +/-0.0759 pCi/g Cesium-134 U 0.0257 +/-0.0214 0.0475 +/-0.0244 0.173 pCi/g Cesium-137 U 0.000679 +/-0.0191 0.0378 +/-0.0191 0.363 pCi/g Cobalt-60 U 0.0139 +/-0.0174 0.0410 +/-0.0185 0.109 pCi/g Europium-152 U -0.0236 +/-0.0487 0.0887 +/-0.0499 0.869 pCi/g Europium-154 U 0.133 +/-0.0795 0.136 +/-0.100 0.799 pCi/g Lead-212 0.197 +/-0.0820 0.0603 +/-0.0839 pCi/g Lead-214 0.215 +/-0.0930 0.0695 +/-0.0947 pCi/g Potassium-40 10.1 +/-0.967 0.338 +/-1.36 pCi/g Thallium-208 0.0535 +/-0.0406 0.0334 +/-0.0408 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 CXB7 07/06/22 1150 2286097 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 55 SDG: 585125

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 8, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-317-SS Project: ENRG08001 Sample ID: 585125020 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 55 SDG: 585125

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Report Date: July 8, 2022 Client : Zion Solutions Page 1 of 4 100 Shiloh Blvd.

Zion, Illinois

Contact:

Mr. Gerry Wood Workorder: 585125 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2286168 QC1205132856 585125001 DUP Actinium-228 0.268 0.190 pCi/g 34 (0% - 100%) MXR1 07/07/22 19:33 Uncert: +/-0.124 +/-0.152 TPU: +/-0.126 +/-0.153 Bismuth-211 UI 0.000 UI 0.000 pCi/g 0 N/A Uncert: +/-0.188 +/-0.453 TPU: +/-0.364 +/-0.457 Bismuth-212 U 0.115 U -0.0234 pCi/g 0 N/A Uncert: +/-0.215 +/-0.243 TPU: +/-0.221 +/-0.244 Bismuth-214 0.130 0.194 pCi/g 39.6 (0% - 100%)

Uncert: +/-0.0700 +/-0.0636 TPU: +/-0.0710 +/-0.0659 Cesium-134 U 0.00362 U 0.00748 pCi/g 0 N/A Uncert: +/-0.0173 +/-0.0181 TPU: +/-0.0174 +/-0.0184 Cesium-137 U -0.00948 U -0.00290 pCi/g 0 N/A Uncert: +/-0.0189 +/-0.0164 TPU: +/-0.0194 +/-0.0165 Cobalt-60 U 0.00501 U 0.00645 pCi/g 0 N/A Uncert: +/-0.0243 +/-0.0176 TPU: +/-0.0244 +/-0.0178 Europium-152 U -0.0279 U 0.0103 pCi/g 0 N/A Uncert: +/-0.0395 +/-0.0391 TPU: +/-0.0416 +/-0.0394 Europium-154 U -0.0171 U -0.0459 pCi/g 0 N/A Uncert: +/-0.0504 +/-0.0496 TPU: +/-0.0510 +/-0.0539 Lead-212 0.230 0.252 pCi/g 9.29 (0%-20%)

Uncert: +/-0.0520 +/-0.0504 TPU: +/-0.0554 +/-0.0544 Lead-214 0.247 0.244 pCi/g .896 (0% - 100%)

Uncert: +/-0.0683 +/-0.0883 TPU: +/-0.0712 +/-0.0906 Potassium-40 11.4 11.9 pCi/g 4.73 (0%-20%)

Uncert: +/-0.890 +/-0.976 TPU: +/-1.36 +/-1.48 Thallium-208 0.0683 0.0880 pCi/g 25.1 (0% - 100%)

Uncert: +/-0.0308 +/-0.0408 TPU: +/-0.0314 +/-0.0416 QC1205132857 LCS Americium-241 485 500 pCi/g 103 (75%-125%) MXR1 07/07/22 19:34 Page 43 of 55 SDG: 585125

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 585125 Page 2 of 4 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2286168 Uncert: +/-5.95 TPU: +/-63.5 Actinium-228 U -0.858 pCi/g Uncert: +/-2.55 TPU: +/-2.58 Bismuth-211 U -1.08 pCi/g Uncert: +/-3.11 TPU: +/-3.15 Bismuth-212 U 11.0 pCi/g Uncert: +/-7.97 TPU: +/-8.02 Bismuth-214 U -0.0389 pCi/g Uncert: +/-0.980 TPU: +/-0.981 Cesium-134 U 0.0730 pCi/g Uncert: +/-0.587 TPU: +/-0.588 Cesium-137 157 159 pCi/g 102 (75%-125%)

Uncert: +/-3.75 TPU: +/-13.7 Cobalt-60 75.2 77.7 pCi/g 103 (75%-125%)

Uncert: +/-3.17 TPU: +/-7.34 Europium-152 U -0.0566 pCi/g Uncert: +/-1.47 TPU: +/-1.47 Europium-154 U 0.676 pCi/g Uncert: +/-0.621 TPU: +/-0.694 Lead-212 U -0.256 pCi/g Uncert: +/-0.793 TPU: +/-0.802 Lead-214 U 0.0356 pCi/g Uncert: +/-1.10 TPU: +/-1.10 Potassium-40 U 0.938 pCi/g Uncert: +/-1.97 TPU: +/-2.02 Thallium-208 U -0.261 pCi/g Uncert: +/-0.503 TPU: +/-0.517 QC1205132855 MB Actinium-228 U -0.00391 pCi/g MXR1 07/07/2219:32 Uncert: +/-0.0554 TPU: +/-0.0555 Bismuth-211 U -0.0624 pCi/g Page 44 of 55 SDG: 585125

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 585125 Page 3 of 4 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2286168 Uncert: +/-0.0739 TPU: +/-0.0792 Bismuth-212 U -0.0443 pCi/g Uncert: +/-0.195 TPU: +/-0.196 Bismuth-214 U 0.0112 pCi/g Uncert: +/-0.0301 TPU: +/-0.0305 Cesium-134 U 0.00704 pCi/g Uncert: +/-0.0141 TPU: +/-0.0144 Cesium-137 U -0.000278 pCi/g Uncert: +/-0.0116 TPU: +/-0.0116 Cobalt-60 U -0.00270 pCi/g Uncert: +/-0.0128 TPU: +/-0.0128 Europium-152 U 0.00173 pCi/g Uncert: +/-0.0279 TPU: +/-0.0279 Europium-154 U -0.00842 pCi/g Uncert: +/-0.0363 TPU: +/-0.0365 Lead-212 U -0.00647 pCi/g Uncert: +/-0.0197 TPU: +/-0.0199 Lead-214 U -0.0109 pCi/g Uncert: +/-0.0278 TPU: +/-0.0282 Potassium-40 U -0.0332 pCi/g Uncert: +/-0.180 TPU: +/-0.180 Thallium-208 UI 0.000 pCi/g Uncert: +/-0.0382 TPU: +/-0.0383 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 55 SDG: 585125

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 585125 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 55 SDG: 585125

Page 47 of 55 SDG: 585125 Page 48 of 55 SDG: 585125 Page 49 of 55 SDG: 585125 Page 50 of 55 SDG: 585125 List of current GEL Certifications as of 08 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 55 SDG: 585125

Radiochemistry Technical Case Narrative Zion Solutions SDG #: 585125 Product: Dry Weight Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2286097 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 585125001 L1-12205A-FSGS-301-SS 585125002 L1-12205A-FSGS-302-SS 585125003 L1-12205A-FSGS-303-SS 585125004 L1-12205A-FSGS-304-SS 585125005 L1-12205A-FSGS-305-SS 585125006 L1-12205A-FSGS-306-SS 585125007 L1-12205A-FSGS-307-SS 585125008 L1-12205A-FSGS-308-SS 585125009 L1-12205A-FSGS-309-SS 585125010 L1-12205A-FSGS-310-SS 585125011 L1-12205A-FSGS-311-SS 585125012 L1-12205A-FSGS-312-SS 585125013 L1-12205A-FSGS-313-SS 585125014 L1-12205A-FSGS-313-SB 585125015 L1-12205A-FSGS-314-SS 585125016 L1-12205A-FSGS-315-SS 585125017 L1-12205A-FSGS-315-SB 585125018 L1-12205A-FSGS-316-SS 585125019 L1-12205A-FQGS-316-SS 585125020 L1-12205A-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: 2286168 Preparation Method: Dry Soil Prep Page 52 of 55 SDG: 585125

Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2286097 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 585125001 L1-12205A-FSGS-301-SS 585125002 L1-12205A-FSGS-302-SS 585125003 L1-12205A-FSGS-303-SS 585125004 L1-12205A-FSGS-304-SS 585125005 L1-12205A-FSGS-305-SS 585125006 L1-12205A-FSGS-306-SS 585125007 L1-12205A-FSGS-307-SS 585125008 L1-12205A-FSGS-308-SS 585125009 L1-12205A-FSGS-309-SS 585125010 L1-12205A-FSGS-310-SS 585125011 L1-12205A-FSGS-311-SS 585125012 L1-12205A-FSGS-312-SS 585125013 L1-12205A-FSGS-313-SS 585125014 L1-12205A-FSGS-313-SB 585125015 L1-12205A-FSGS-314-SS 585125016 L1-12205A-FSGS-315-SS 585125017 L1-12205A-FSGS-315-SB 585125018 L1-12205A-FSGS-316-SS 585125019 L1-12205A-FQGS-316-SS 585125020 L1-12205A-FSGS-317-SS 1205132855 Method Blank (MB) 1205132856 585125001(L1-12205A-FSGS-301-SS) Sample Duplicate (DUP) 1205132857 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 false UI positive due Bismuth-211 585125016 L1-12205A-FSGS-315-SS to high counting uncertainty.

Bismuth-211 585125019 L1-12205A-FQGS-316-SS Bismuth-211 1205132856 L1-12205A-FSGS-301-SS(585125001DUP)

Page 53 of 55 SDG: 585125

Bismuth-212 585125011 L1-12205A-FSGS-311-SS Bismuth-214 585125011 L1-12205A-FSGS-311-SS Results are considered a false UI Bismuth-212 585125008 L1-12205A-FSGS-308-SS positive due to high peak-width.

Bismuth-212 585125010 L1-12205A-FSGS-310-SS Thallium-208 1205132855 MB for batch 2286168 Results are considered a false UI Actinium-228 585125004 L1-12205A-FSGS-304-SS positive due to low abundance.

Actinium-228 585125016 L1-12205A-FSGS-315-SS Bismuth-211 585125001 L1-12205A-FSGS-301-SS Bismuth-211 585125002 L1-12205A-FSGS-302-SS Bismuth-211 585125003 L1-12205A-FSGS-303-SS Bismuth-211 585125004 L1-12205A-FSGS-304-SS Bismuth-211 585125006 L1-12205A-FSGS-306-SS Bismuth-211 585125009 L1-12205A-FSGS-309-SS Bismuth-211 585125011 L1-12205A-FSGS-311-SS Bismuth-211 585125012 L1-12205A-FSGS-312-SS Bismuth-211 585125015 L1-12205A-FSGS-314-SS Bismuth-211 585125017 L1-12205A-FSGS-315-SB Bismuth-211 585125018 L1-12205A-FSGS-316-SS Bismuth-211 585125020 L1-12205A-FSGS-317-SS Bismuth-214 585125010 L1-12205A-FSGS-310-SS Bismuth-214 585125015 L1-12205A-FSGS-314-SS Cesium-134 585125016 L1-12205A-FSGS-315-SS Lead-212 585125007 L1-12205A-FSGS-307-SS Certification Statement Where the analytical method has been performed under NELAP certification, the analysis has met all of the Page 54 of 55 SDG: 585125

requirements of the NELAC standard unless otherwise noted in the analytical case narrative.

Page 55 of 55 SDG: 585125

August 10, 2022 Mr. Gerry Wood Zion Solutions 100 Shiloh Blvd.

Zion, Illinois 60099 Re: Zion Solutions Work Order: 587450

Dear Mr. Wood:

GEL Laboratories, LLC (GEL) appreciates the opportunity to provide the enclosed analytical results for the sample(s) we received on April 07, 2022, July 06, 2022, July 11, 2022, June 09, 2022 and June 30, 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 100 SDG: 587450

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: 587450 GEL Work Order: 587450 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10201C-FSGS-211-SS Project: ENRG08001 Sample ID: 587450001 Client ID: ENRG080 Matrix: Soil Collect Date: 06-JUN-22 Receive Date: 09-JUN-22 Collector: Client Moisture: 7.85%

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 0.238 +/-0.192 0.384 +/-0.221 pCi/g RXF2 07/29/22 0525 2295332 1 Bismuth-211 U 0.285 +/-0.933 0.344 +/-0.937 pCi/g Bismuth-212 U 0.268 +/-0.635 1.09 +/-0.647 pCi/g Bismuth-214 UI 0.000 +/-0.165 0.244 +/-0.229 pCi/g Cesium-134 U 0.00983 +/-0.0363 0.0740 +/-0.0366 0.173 pCi/g Cesium-137 0.0931 +/-0.0758 0.0722 +/-0.0762 0.363 pCi/g Cobalt-60 U 0.0144 +/-0.0395 0.0883 +/-0.0400 0.109 pCi/g Europium-152 U 0.0370 +/-0.0874 0.178 +/-0.0890 0.869 pCi/g Europium-154 U 0.0266 +/-0.103 0.222 +/-0.104 0.799 pCi/g Lead-212 0.375 +/-0.0992 0.0971 +/-0.103 pCi/g Lead-214 0.361 +/-0.195 0.220 +/-0.198 pCi/g Potassium-40 8.11 +/-1.28 0.779 +/-1.48 pCi/g Thallium-208 0.118 +/-0.0588 0.0694 +/-0.0598 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.00507 +/-0.0115 0.0202 +/-0.0115 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 3.98 +/-6.71 11.4 +/-6.75 19.5 pCi/g TXJ1 08/04/22 1638 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 06/10/22 1300 2295002 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" 2295040 71.7 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 80.2 (25%-125%)

Page 3 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10201C-FSGS-211-SS Project: ENRG08001 Sample ID: 587450001 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10201C-FSGS-212-SS Project: ENRG08001 Sample ID: 587450002 Client ID: ENRG080 Matrix: Soil Collect Date: 06-JUN-22 Receive Date: 09-JUN-22 Collector: Client Moisture: 7.53%

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 0.442 +/-0.286 0.454 +/-0.351 pCi/g RXF2 07/29/22 0727 2295332 1 Bismuth-211 UI 0.000 +/-0.378 0.568 +/-0.621 pCi/g Bismuth-212 U 0.403 +/-0.663 1.18 +/-0.688 pCi/g Bismuth-214 0.428 +/-0.183 0.0981 +/-0.187 pCi/g Cesium-134 U 0.0106 +/-0.0421 0.0833 +/-0.0424 0.173 pCi/g Cesium-137 UI 0.000 +/-0.0866 0.0672 +/-0.0870 0.363 pCi/g Cobalt-60 U -0.0325 +/-0.0284 0.0447 +/-0.0321 0.109 pCi/g Europium-152 U 0.00425 +/-0.0790 0.158 +/-0.0791 0.869 pCi/g Europium-154 U 0.0161 +/-0.116 0.239 +/-0.116 0.799 pCi/g Lead-212 0.337 +/-0.119 0.100 +/-0.122 pCi/g Lead-214 0.389 +/-0.137 0.0976 +/-0.141 pCi/g Potassium-40 8.12 +/-1.27 0.577 +/-1.47 pCi/g Thallium-208 0.188 +/-0.0881 0.0522 +/-0.0897 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0236 +/-0.0178 0.0296 +/-0.0183 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 5.22 +/-6.47 10.9 +/-6.54 19.5 pCi/g TXJ1 08/04/22 1709 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 06/10/22 1300 2295002 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" 2295040 67.1 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 81 (25%-125%)

Page 5 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10201C-FSGS-212-SS Project: ENRG08001 Sample ID: 587450002 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10201D-FSGS-205-SS Project: ENRG08001 Sample ID: 587450003 Client ID: ENRG080 Matrix: Soil Collect Date: 14-JUN-22 Receive Date: 30-JUN-22 Collector: Client Moisture: 9.07%

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 0.168 +/-0.123 0.126 +/-0.124 pCi/g MJH1 07/28/22 1624 2295333 1 Bismuth-211 UI 0.000 +/-0.249 0.225 +/-0.254 pCi/g Bismuth-212 U -0.175 +/-0.320 0.568 +/-0.330 pCi/g Bismuth-214 0.210 +/-0.0894 0.0778 +/-0.0914 pCi/g Cesium-134 U 0.0421 +/-0.0461 0.0653 +/-0.0500 0.173 pCi/g Cesium-137 U 0.0118 +/-0.0392 0.0399 +/-0.0392 0.363 pCi/g Cobalt-60 U -0.00480 +/-0.0239 0.0472 +/-0.0240 0.109 pCi/g Europium-152 U 0.000947 +/-0.0485 0.0998 +/-0.0485 0.869 pCi/g Europium-154 U 0.00908 +/-0.0586 0.130 +/-0.0588 0.799 pCi/g Lead-212 0.287 +/-0.0691 0.0550 +/-0.0731 pCi/g Lead-214 0.215 +/-0.0902 0.144 +/-0.134 pCi/g Potassium-40 4.54 +/-0.854 0.635 +/-0.947 pCi/g Thallium-208 U 0.0192 +/-0.0412 0.0370 +/-0.0412 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.0233 +/-0.0114 0.0212 +/-0.0114 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 0.555 +/-6.01 10.3 +/-6.01 19.5 pCi/g TXJ1 08/04/22 1740 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 06/30/22 1512 2295002 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" 2295040 74 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 88.6 (25%-125%)

Page 7 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10201D-FSGS-205-SS Project: ENRG08001 Sample ID: 587450003 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10201D-FSGS-213-SS Project: ENRG08001 Sample ID: 587450004 Client ID: ENRG080 Matrix: Soil Collect Date: 14-JUN-22 Receive Date: 30-JUN-22 Collector: Client Moisture: 5.74%

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 0.345 +/-0.187 0.244 +/-0.190 pCi/g MJH1 07/28/22 1624 2295333 1 Bismuth-211 U 0.131 +/-0.620 0.247 +/-0.631 pCi/g Bismuth-212 U 0.131 +/-0.353 0.763 +/-0.358 pCi/g Bismuth-214 0.334 +/-0.127 0.102 +/-0.131 pCi/g Cesium-134 U 0.0108 +/-0.0332 0.0685 +/-0.0336 0.173 pCi/g Cesium-137 U 0.0376 +/-0.0628 0.0495 +/-0.0629 0.363 pCi/g Cobalt-60 U -0.00623 +/-0.0249 0.0514 +/-0.0251 0.109 pCi/g Europium-152 U 0.0418 +/-0.0677 0.136 +/-0.0704 0.869 pCi/g Europium-154 U -0.0207 +/-0.0929 0.186 +/-0.0934 0.799 pCi/g Lead-212 0.348 +/-0.0854 0.0653 +/-0.0898 pCi/g Lead-214 0.449 +/-0.134 0.213 +/-0.138 pCi/g Potassium-40 8.33 +/-1.16 0.307 +/-1.37 pCi/g Thallium-208 0.0764 +/-0.0484 0.0305 +/-0.0489 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.0214 +/-0.0221 0.0390 +/-0.0221 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -1.41 +/-8.19 14.2 +/-8.19 19.5 pCi/g TXJ1 08/04/22 1810 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 06/30/22 1512 2295002 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" 2295040 48.6 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 59.8 (25%-125%)

Page 9 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10201D-FSGS-213-SS Project: ENRG08001 Sample ID: 587450004 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10202C-FSGS-204-SS Project: ENRG08001 Sample ID: 587450005 Client ID: ENRG080 Matrix: Soil Collect Date: 15-JUN-22 Receive Date: 30-JUN-22 Collector: Client Moisture: 4.13%

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 0.350 +/-0.195 0.370 +/-0.253 pCi/g MJH1 07/28/22 1625 2295333 1 Bismuth-211 UI 0.000 +/-0.331 0.438 +/-0.478 pCi/g Bismuth-212 UI 0.000 +/-0.879 0.776 +/-0.884 pCi/g Bismuth-214 0.355 +/-0.121 0.0987 +/-0.125 pCi/g Cesium-134 U 0.00454 +/-0.0298 0.0600 +/-0.0298 0.173 pCi/g Cesium-137 U 0.0355 +/-0.0380 0.0504 +/-0.0381 0.363 pCi/g Cobalt-60 U -0.0135 +/-0.0297 0.0559 +/-0.0303 0.109 pCi/g Europium-152 U 0.0407 +/-0.0693 0.147 +/-0.0718 0.869 pCi/g Europium-154 U -0.0136 +/-0.0859 0.173 +/-0.0861 0.799 pCi/g Lead-212 0.345 +/-0.0798 0.0618 +/-0.0849 pCi/g Lead-214 0.273 +/-0.120 0.0948 +/-0.122 pCi/g Potassium-40 10.2 +/-1.27 0.362 +/-1.58 pCi/g Thallium-208 0.0954 +/-0.0573 0.0425 +/-0.0579 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.0594 +/-0.0169 0.0322 +/-0.0169 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 2.92 +/-7.01 11.9 +/-7.03 19.5 pCi/g TXJ1 08/04/22 1841 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 06/30/22 1505 2295002 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" 2295040 57.8 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 74.8 (25%-125%)

Page 11 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10202C-FSGS-204-SS Project: ENRG08001 Sample ID: 587450005 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10202C-FSGS-211-SS Project: ENRG08001 Sample ID: 587450006 Client ID: ENRG080 Matrix: Soil Collect Date: 15-JUN-22 Receive Date: 30-JUN-22 Collector: Client Moisture: 3.92%

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 0.200 +/-0.235 0.219 +/-0.236 pCi/g MJH1 07/28/22 1627 2295333 1 Bismuth-211 UI 0.000 +/-0.316 0.494 +/-0.600 pCi/g Bismuth-212 U 0.125 +/-0.407 0.841 +/-0.411 pCi/g Bismuth-214 0.291 +/-0.133 0.112 +/-0.135 pCi/g Cesium-134 U 0.0223 +/-0.0227 0.0574 +/-0.0249 0.173 pCi/g Cesium-137 U 0.0450 +/-0.0346 0.0788 +/-0.0403 0.363 pCi/g Cobalt-60 U 0.00544 +/-0.0278 0.0637 +/-0.0279 0.109 pCi/g Europium-152 U -0.0292 +/-0.0767 0.134 +/-0.0779 0.869 pCi/g Europium-154 U -0.00114 +/-0.0993 0.206 +/-0.0993 0.799 pCi/g Lead-212 0.313 +/-0.104 0.0949 +/-0.108 pCi/g Lead-214 0.403 +/-0.115 0.0727 +/-0.120 pCi/g Potassium-40 9.89 +/-1.36 0.355 +/-1.67 pCi/g Thallium-208 U 0.0285 +/-0.0631 0.0575 +/-0.0631 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.0249 +/-0.0167 0.0297 +/-0.0167 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -0.0700 +/-6.67 11.5 +/-6.67 19.5 pCi/g TXJ1 08/04/22 1912 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 06/30/22 1505 2295002 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" 2295040 74 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 82.4 (25%-125%)

Page 13 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10202C-FSGS-211-SS Project: ENRG08001 Sample ID: 587450006 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10202D-FSGS-216-SS Project: ENRG08001 Sample ID: 587450007 Client ID: ENRG080 Matrix: Soil Collect Date: 14-JUN-22 Receive Date: 30-JUN-22 Collector: Client Moisture: 7.73%

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 0.465 +/-0.149 0.0977 +/-0.155 pCi/g MJH1 07/28/22 1638 2295333 1 Bismuth-211 UI 0.000 +/-0.384 0.553 +/-0.628 pCi/g Bismuth-212 U 0.0658 +/-0.400 0.807 +/-0.401 pCi/g Bismuth-214 0.373 +/-0.127 0.0855 +/-0.131 pCi/g Cesium-134 U 0.00491 +/-0.0269 0.0550 +/-0.0270 0.173 pCi/g Cesium-137 0.0742 +/-0.0484 0.0527 +/-0.0488 0.363 pCi/g Cobalt-60 U -0.0157 +/-0.0260 0.0488 +/-0.0270 0.109 pCi/g Europium-152 U 0.0358 +/-0.0598 0.130 +/-0.0620 0.869 pCi/g Europium-154 U 0.0581 +/-0.0879 0.201 +/-0.0918 0.799 pCi/g Lead-212 0.305 +/-0.0912 0.0840 +/-0.0946 pCi/g Lead-214 0.393 +/-0.139 0.0869 +/-0.143 pCi/g Potassium-40 8.74 +/-1.15 0.568 +/-1.42 pCi/g Thallium-208 0.134 +/-0.0618 0.0424 +/-0.0629 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.0217 +/-0.0191 0.0344 +/-0.0191 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 3.55 +/-6.60 11.2 +/-6.63 19.5 pCi/g TXJ1 08/04/22 1943 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 06/30/22 1501 2295002 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" 2295040 46.2 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 81 (25%-125%)

Page 15 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10202D-FSGS-216-SS Project: ENRG08001 Sample ID: 587450007 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10202D-FSGS-215-SS Project: ENRG08001 Sample ID: 587450008 Client ID: ENRG080 Matrix: Soil Collect Date: 14-JUN-22 Receive Date: 30-JUN-22 Collector: Client Moisture: 6.29%

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 0.435 +/-0.224 0.193 +/-0.227 pCi/g MJH1 07/28/22 1659 2295333 1 Bismuth-211 UI 0.000 +/-0.414 0.576 +/-0.647 pCi/g Bismuth-212 UI 0.000 +/-0.516 0.639 +/-0.527 pCi/g Bismuth-214 0.391 +/-0.115 0.0795 +/-0.120 pCi/g Cesium-134 U 0.0119 +/-0.0310 0.0658 +/-0.0315 0.173 pCi/g Cesium-137 U 0.0166 +/-0.0289 0.0623 +/-0.0299 0.363 pCi/g Cobalt-60 U 0.0186 +/-0.0223 0.0613 +/-0.0239 0.109 pCi/g Europium-152 U 0.00573 +/-0.0620 0.121 +/-0.0621 0.869 pCi/g Europium-154 U -0.0260 +/-0.0771 0.151 +/-0.0780 0.799 pCi/g Lead-212 0.258 +/-0.0848 0.0633 +/-0.0874 pCi/g Lead-214 0.394 +/-0.150 0.0986 +/-0.154 pCi/g Potassium-40 9.41 +/-1.32 0.662 +/-1.60 pCi/g Thallium-208 0.110 +/-0.0519 0.0454 +/-0.0527 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0154 +/-0.0198 0.0334 +/-0.0200 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 2.64 +/-5.85 9.94 +/-5.87 19.5 pCi/g TXJ1 08/04/22 2014 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 06/30/22 1501 2295002 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" 2295040 67.1 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 83.3 (25%-125%)

Page 17 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-10202D-FSGS-215-SS Project: ENRG08001 Sample ID: 587450008 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201D-FSGS-309-SS Project: ENRG08001 Sample ID: 587450009 Client ID: ENRG080 Matrix: Soil Collect Date: 27-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 1.55%

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 0.358 +/-0.142 0.128 +/-0.147 pCi/g MJH1 07/28/22 1659 2295333 1 Bismuth-211 UI 0.000 +/-0.570 0.247 +/-0.577 pCi/g Bismuth-212 UI 0.000 +/-0.383 0.457 +/-0.390 pCi/g Bismuth-214 0.225 +/-0.109 0.0895 +/-0.110 pCi/g Cesium-134 U 0.0168 +/-0.0255 0.0556 +/-0.0266 0.173 pCi/g Cesium-137 0.0718 +/-0.0272 0.0348 +/-0.0279 0.363 pCi/g Cobalt-60 U -0.00766 +/-0.0301 0.0582 +/-0.0303 0.109 pCi/g Europium-152 U -0.0563 +/-0.0514 0.0907 +/-0.0575 0.869 pCi/g Europium-154 U 0.0972 +/-0.0960 0.207 +/-0.106 0.799 pCi/g Lead-212 0.215 +/-0.0912 0.0659 +/-0.0928 pCi/g Lead-214 0.384 +/-0.122 0.185 +/-0.126 pCi/g Potassium-40 10.2 +/-1.21 0.395 +/-1.53 pCi/g Thallium-208 0.0838 +/-0.0589 0.0440 +/-0.0594 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.0227 +/-0.0175 0.0310 +/-0.0175 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 0.210 +/-8.00 13.8 +/-8.00 19.5 pCi/g TXJ1 08/04/22 2044 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 07/06/22 1153 2295002 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" 2295040 71.7 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 64.7 (25%-125%)

Page 19 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201D-FSGS-309-SS Project: ENRG08001 Sample ID: 587450009 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201D-FSGS-315-SS Project: ENRG08001 Sample ID: 587450010 Client ID: ENRG080 Matrix: Soil Collect Date: 27-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 2.43%

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 0.335 +/-0.202 0.378 +/-0.254 pCi/g MJH1 07/28/22 1703 2295333 1 Bismuth-211 UI 0.000 +/-0.342 0.512 +/-0.542 pCi/g Bismuth-212 U 0.152 +/-0.417 0.849 +/-0.422 pCi/g Bismuth-214 0.201 +/-0.117 0.0966 +/-0.119 pCi/g Cesium-134 U 0.00482 +/-0.0330 0.0685 +/-0.0331 0.173 pCi/g Cesium-137 0.104 +/-0.0458 0.0521 +/-0.0467 0.363 pCi/g Cobalt-60 U 0.0100 +/-0.0354 0.0754 +/-0.0357 0.109 pCi/g Europium-152 U 0.00131 +/-0.0686 0.127 +/-0.0686 0.869 pCi/g Europium-154 U -0.00217 +/-0.0967 0.175 +/-0.0967 0.799 pCi/g Lead-212 0.340 +/-0.0746 0.0705 +/-0.0797 pCi/g Lead-214 0.333 +/-0.124 0.0905 +/-0.127 pCi/g Potassium-40 8.68 +/-1.20 0.487 +/-1.47 pCi/g Thallium-208 0.0984 +/-0.0445 0.0393 +/-0.0453 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0213 +/-0.0208 0.0349 +/-0.0212 0.0425 pCi/g KP1 08/03/22 1826 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -0.168 +/-8.02 13.8 +/-8.02 19.5 pCi/g TXJ1 08/04/22 2115 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 07/06/22 1153 2295002 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" 2295040 50.9 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 64.7 (25%-125%)

Page 21 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201D-FSGS-315-SS Project: ENRG08001 Sample ID: 587450010 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201E-FSGS-207-SS Project: ENRG08001 Sample ID: 587450011 Client ID: ENRG080 Matrix: Soil Collect Date: 29-JUN-22 Receive Date: 11-JUL-22 Collector: Client Moisture: 2.27%

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 0.173 +/-0.151 0.346 +/-0.171 pCi/g MJH1 07/28/22 1704 2295333 1 Bismuth-211 U 0.188 +/-0.566 0.227 +/-0.572 pCi/g Bismuth-212 U 0.206 +/-0.382 0.836 +/-0.393 pCi/g Bismuth-214 UI 0.000 +/-0.111 0.182 +/-0.163 pCi/g Cesium-134 U 0.0129 +/-0.0346 0.0726 +/-0.0351 0.173 pCi/g Cesium-137 U 0.0133 +/-0.0251 0.0565 +/-0.0259 0.363 pCi/g Cobalt-60 U -0.00902 +/-0.0240 0.0471 +/-0.0243 0.109 pCi/g Europium-152 U -0.0197 +/-0.0647 0.113 +/-0.0654 0.869 pCi/g Europium-154 U 0.0231 +/-0.110 0.232 +/-0.110 0.799 pCi/g Lead-212 0.203 +/-0.0946 0.0630 +/-0.0962 pCi/g Lead-214 0.310 +/-0.108 0.163 +/-0.111 pCi/g Potassium-40 9.59 +/-1.33 0.462 +/-1.56 pCi/g Thallium-208 0.0682 +/-0.0571 0.0516 +/-0.0575 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.00601 +/-0.0230 0.0403 +/-0.0230 0.0425 pCi/g KP1 08/05/22 1833 2295040 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 0.628 +/-5.90 10.1 +/-5.90 19.5 pCi/g TXJ1 08/04/22 2146 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 07/12/22 0928 2295002 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" 2295040 48.6 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 89 (25%-125%)

Page 23 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201E-FSGS-207-SS Project: ENRG08001 Sample ID: 587450011 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201E-FSGS-208-SS Project: ENRG08001 Sample ID: 587450012 Client ID: ENRG080 Matrix: Soil Collect Date: 29-JUN-22 Receive Date: 11-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 U 0.223 +/-0.134 0.297 +/-0.169 pCi/g MJH1 07/28/22 1737 2295333 1 Bismuth-211 U 0.362 +/-0.172 0.406 +/-0.240 pCi/g Bismuth-212 U 0.0155 +/-0.299 0.615 +/-0.299 pCi/g Bismuth-214 0.158 +/-0.102 0.0890 +/-0.102 pCi/g Cesium-134 U 0.0103 +/-0.0289 0.0612 +/-0.0293 0.173 pCi/g Cesium-137 U 0.00964 +/-0.0234 0.0510 +/-0.0238 0.363 pCi/g Cobalt-60 U 0.0211 +/-0.0265 0.0664 +/-0.0282 0.109 pCi/g Europium-152 U -0.00180 +/-0.0599 0.118 +/-0.0599 0.869 pCi/g Europium-154 U -0.00940 +/-0.0643 0.137 +/-0.0644 0.799 pCi/g Lead-212 UI 0.000 +/-0.0788 0.138 +/-0.148 pCi/g Lead-214 0.184 +/-0.147 0.0838 +/-0.148 pCi/g Potassium-40 10.9 +/-1.32 0.500 +/-1.70 pCi/g Thallium-208 U 0.0274 +/-0.0541 0.0442 +/-0.0542 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.0248 +/-0.0201 0.0408 +/-0.0201 0.0425 pCi/g KP1 08/09/22 1813 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -0.198 +/-6.40 11.0 +/-6.40 19.5 pCi/g TXJ1 08/04/22 2217 2295673 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 07/12/22 0928 2295002 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" 2295041 50.9 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295673 82.4 (25%-125%)

Page 25 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12201E-FSGS-208-SS Project: ENRG08001 Sample ID: 587450012 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-311-SS Project: ENRG08001 Sample ID: 587450013 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: 4.32%

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 0.363 +/-0.148 0.131 +/-0.152 pCi/g MJH1 07/28/22 1740 2295333 1 Bismuth-211 UI 0.000 +/-0.872 0.201 +/-0.873 pCi/g Bismuth-212 U 0.263 +/-0.642 0.692 +/-0.643 pCi/g Bismuth-214 UI 0.000 +/-0.147 0.0902 +/-0.148 pCi/g Cesium-134 U 0.0410 +/-0.0301 0.0588 +/-0.0355 0.173 pCi/g Cesium-137 U 0.00897 +/-0.0482 0.0509 +/-0.0482 0.363 pCi/g Cobalt-60 U -0.00453 +/-0.0208 0.0417 +/-0.0209 0.109 pCi/g Europium-152 U 0.0349 +/-0.0539 0.110 +/-0.0562 0.869 pCi/g Europium-154 U 0.0184 +/-0.0707 0.153 +/-0.0712 0.799 pCi/g Lead-212 0.191 +/-0.102 0.0643 +/-0.103 pCi/g Lead-214 0.272 +/-0.107 0.148 +/-0.109 pCi/g Potassium-40 10.6 +/-1.20 0.470 +/-1.54 pCi/g Thallium-208 U 0.0294 +/-0.0305 0.0660 +/-0.0333 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0182 +/-0.0243 0.0416 +/-0.0246 0.0425 pCi/g KP1 08/09/22 1813 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -0.117 +/-6.23 10.8 +/-6.23 19.5 pCi/g TXJ1 08/04/22 1825 2295678 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 07/06/22 1150 2295010 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" 2295041 43.9 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295678 75.7 (25%-125%)

Page 27 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-311-SS Project: ENRG08001 Sample ID: 587450013 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-312-SS Project: ENRG08001 Sample ID: 587450014 Client ID: ENRG080 Matrix: Soil Collect Date: 23-JUN-22 Receive Date: 06-JUL-22 Collector: Client Moisture: .282%

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 0.190 +/-0.149 0.272 +/-0.173 pCi/g MJH1 07/28/22 1740 2295333 1 Bismuth-211 U 0.101 +/-0.462 0.143 +/-0.468 pCi/g Bismuth-212 U 0.524 +/-0.504 0.536 +/-0.507 pCi/g Bismuth-214 0.221 +/-0.0888 0.0747 +/-0.0910 pCi/g Cesium-134 U 0.0248 +/-0.0259 0.0602 +/-0.0283 0.173 pCi/g Cesium-137 U -0.0139 +/-0.0228 0.0420 +/-0.0237 0.363 pCi/g Cobalt-60 U -0.0157 +/-0.0222 0.0399 +/-0.0233 0.109 pCi/g Europium-152 U 0.0124 +/-0.0536 0.0994 +/-0.0539 0.869 pCi/g Europium-154 U 0.0404 +/-0.0776 0.179 +/-0.0798 0.799 pCi/g Lead-212 0.198 +/-0.0796 0.0591 +/-0.0812 pCi/g Lead-214 0.307 +/-0.0880 0.145 +/-0.0914 pCi/g Potassium-40 11.2 +/-1.25 0.267 +/-1.59 pCi/g Thallium-208 U 0.0334 +/-0.0431 0.0397 +/-0.0432 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.00904 +/-0.0164 0.0323 +/-0.0164 0.0425 pCi/g KP1 08/09/22 1813 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 2.23 +/-6.64 11.4 +/-6.65 19.5 pCi/g TXJ1 08/04/22 1857 2295678 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 07/06/22 1150 2295010 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" 2295041 97.1 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295678 68.6 (25%-125%)

Page 29 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12205A-FSGS-312-SS Project: ENRG08001 Sample ID: 587450014 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FSGS-048-SS Project: ENRG08001 Sample ID: 587450015 Client ID: ENRG080 Matrix: Soil Collect Date: 21-MAR-22 Receive Date: 07-APR-22 Collector: Client Moisture: 7.17%

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 0.333 +/-0.152 0.149 +/-0.155 pCi/g RXF2 07/29/22 0913 2295332 1 Bismuth-211 UI 0.000 +/-0.233 0.308 +/-0.410 pCi/g Bismuth-212 U 0.307 +/-0.299 0.607 +/-0.330 pCi/g Bismuth-214 0.267 +/-0.0955 0.0582 +/-0.0982 pCi/g Cesium-134 U 0.0204 +/-0.0235 0.0512 +/-0.0253 0.173 pCi/g Cesium-137 0.112 +/-0.0422 0.0388 +/-0.0432 0.363 pCi/g Cobalt-60 U 0.0518 +/-0.0323 0.0721 +/-0.0402 0.109 pCi/g Europium-152 U 0.0242 +/-0.0453 0.0942 +/-0.0467 0.869 pCi/g Europium-154 U -0.0384 +/-0.0701 0.121 +/-0.0722 0.799 pCi/g Lead-212 0.302 +/-0.0556 0.0447 +/-0.0614 pCi/g Lead-214 0.267 +/-0.0844 0.0650 +/-0.0873 pCi/g Potassium-40 9.18 +/-0.968 0.440 +/-1.31 pCi/g Thallium-208 0.0685 +/-0.0526 0.0332 +/-0.0529 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0133 +/-0.0187 0.0320 +/-0.0189 0.0425 pCi/g KP1 08/09/22 1813 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 1.69 +/-6.65 11.4 +/-6.66 19.5 pCi/g TXJ1 08/04/22 1928 2295678 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 04/08/22 0925 2295010 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" 2295041 69.4 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295678 74 (25%-125%)

Page 31 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FSGS-048-SS Project: ENRG08001 Sample ID: 587450015 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FSGS-061-SS Project: ENRG08001 Sample ID: 587450016 Client ID: ENRG080 Matrix: Soil Collect Date: 22-MAR-22 Receive Date: 07-APR-22 Collector: Client Moisture: 9.65%

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 0.318 +/-0.231 0.187 +/-0.233 pCi/g RXF2 07/29/22 0914 2295332 1 Bismuth-211 UI 0.000 +/-0.375 0.495 +/-0.672 pCi/g Bismuth-212 U 0.721 +/-0.746 0.758 +/-0.749 pCi/g Bismuth-214 0.429 +/-0.141 0.0995 +/-0.146 pCi/g Cesium-134 U 0.0109 +/-0.0381 0.0738 +/-0.0385 0.173 pCi/g Cesium-137 0.417 +/-0.0860 0.0514 +/-0.0926 0.363 pCi/g Cobalt-60 U -0.0226 +/-0.0307 0.0542 +/-0.0324 0.109 pCi/g Europium-152 U 0.0419 +/-0.0680 0.131 +/-0.0706 0.869 pCi/g Europium-154 U 0.0141 +/-0.0941 0.189 +/-0.0943 0.799 pCi/g Lead-212 0.417 +/-0.0883 0.0699 +/-0.0939 pCi/g Lead-214 0.441 +/-0.136 0.100 +/-0.141 pCi/g Potassium-40 11.5 +/-1.25 0.615 +/-1.63 pCi/g Thallium-208 0.141 +/-0.0645 0.0477 +/-0.0658 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0166 +/-0.0195 0.0330 +/-0.0198 0.0425 pCi/g KP1 08/09/22 1813 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U -0.818 +/-6.80 11.8 +/-6.80 19.5 pCi/g TXJ1 08/04/22 2000 2295678 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 04/08/22 0925 2295010 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" 2295041 74 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295678 71.7 (25%-125%)

Page 33 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FSGS-061-SS Project: ENRG08001 Sample ID: 587450016 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FIGS-029-SS Project: ENRG08001 Sample ID: 587450017 Client ID: ENRG080 Matrix: Soil Collect Date: 22-MAR-22 Receive Date: 07-APR-22 Collector: Client Moisture: 11.5%

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 0.489 +/-0.147 0.114 +/-0.155 pCi/g RXF2 07/29/22 1016 2295332 1 Bismuth-211 UI 0.000 +/-0.335 0.366 +/-0.729 pCi/g Bismuth-212 UI 0.000 +/-0.369 0.378 +/-0.381 pCi/g Bismuth-214 0.505 +/-0.0906 0.0623 +/-0.102 pCi/g Cesium-134 UI 0.000 +/-0.0345 0.0428 +/-0.0452 0.173 pCi/g Cesium-137 2.59 +/-0.0984 0.0307 +/-0.261 0.363 pCi/g Cobalt-60 U 0.0122 +/-0.0203 0.0369 +/-0.0211 0.109 pCi/g Europium-152 U -0.0560 +/-0.0527 0.0895 +/-0.0586 0.869 pCi/g Europium-154 U 0.0374 +/-0.0704 0.118 +/-0.0725 0.799 pCi/g Lead-212 0.502 +/-0.0830 0.0583 +/-0.0922 pCi/g Lead-214 0.513 +/-0.122 0.0713 +/-0.129 pCi/g Potassium-40 13.9 +/-0.819 0.261 +/-1.49 pCi/g Thallium-208 0.143 +/-0.0352 0.0312 +/-0.0376 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.00312 +/-0.0177 0.0320 +/-0.0177 0.0425 pCi/g KP1 08/09/22 1813 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 0.236 +/-6.47 11.2 +/-6.47 19.5 pCi/g TXJ1 08/04/22 2032 2295678 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 04/08/22 0925 2295010 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" 2295041 90.2 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295678 74 (25%-125%)

Page 35 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FIGS-029-SS Project: ENRG08001 Sample ID: 587450017 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FIGS-031-SS Project: ENRG08001 Sample ID: 587450018 Client ID: ENRG080 Matrix: Soil Collect Date: 22-MAR-22 Receive Date: 07-APR-22 Collector: Client Moisture: 6.7%

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 +/-0.158 0.308 +/-0.215 pCi/g RXF2 07/29/22 1208 2295332 1 Bismuth-211 UI 0.000 +/-0.401 0.483 +/-0.567 pCi/g Bismuth-212 U 0.410 +/-0.395 0.876 +/-0.438 pCi/g Bismuth-214 0.228 +/-0.118 0.0907 +/-0.119 pCi/g Cesium-134 U 0.0257 +/-0.0304 0.0675 +/-0.0326 0.173 pCi/g Cesium-137 2.85 +/-0.170 0.0484 +/-0.293 0.363 pCi/g Cobalt-60 U 0.00786 +/-0.0284 0.0633 +/-0.0286 0.109 pCi/g Europium-152 U 0.0133 +/-0.0756 0.152 +/-0.0759 0.869 pCi/g Europium-154 U 0.0489 +/-0.0937 0.182 +/-0.0964 0.799 pCi/g Lead-212 0.331 +/-0.0878 0.0687 +/-0.0919 pCi/g Lead-214 0.317 +/-0.146 0.110 +/-0.148 pCi/g Potassium-40 9.64 +/-1.19 0.479 +/-1.51 pCi/g Thallium-208 0.0986 +/-0.0616 0.0442 +/-0.0621 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0178 +/-0.0244 0.0417 +/-0.0246 0.0425 pCi/g KP1 08/09/22 1813 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 6.06 +/-6.36 10.7 +/-6.45 19.5 pCi/g TXJ1 08/04/22 2104 2295678 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 04/08/22 0931 2295010 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" 2295041 43.9 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295678 80.2 (25%-125%)

Page 37 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FIGS-031-SS Project: ENRG08001 Sample ID: 587450018 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-QIGS-031-SS Project: ENRG08001 Sample ID: 587450019 Client ID: ENRG080 Matrix: Soil Collect Date: 22-MAR-22 Receive Date: 07-APR-22 Collector: Client Moisture: 6.69%

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 0.143 +/-0.157 0.277 +/-0.170 pCi/g RXF2 07/29/22 1250 2295332 1 Bismuth-211 UI 0.000 +/-0.646 0.285 +/-0.654 pCi/g Bismuth-212 U 0.301 +/-0.309 0.611 +/-0.310 pCi/g Bismuth-214 0.222 +/-0.172 0.0909 +/-0.173 pCi/g Cesium-134 U 0.00722 +/-0.0261 0.0555 +/-0.0263 0.173 pCi/g Cesium-137 3.12 +/-0.180 0.0440 +/-0.334 0.363 pCi/g Cobalt-60 U 0.0126 +/-0.0251 0.0592 +/-0.0257 0.109 pCi/g Europium-152 U -0.0503 +/-0.0771 0.131 +/-0.0805 0.869 pCi/g Europium-154 U -0.0253 +/-0.0775 0.154 +/-0.0784 0.799 pCi/g Lead-212 0.265 +/-0.114 0.0838 +/-0.116 pCi/g Lead-214 0.453 +/-0.136 0.182 +/-0.141 pCi/g Potassium-40 10.1 +/-1.27 0.556 +/-1.55 pCi/g Thallium-208 0.106 +/-0.0656 0.0477 +/-0.0663 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.0289 +/-0.0203 0.0322 +/-0.0210 0.0425 pCi/g KP1 08/09/22 1813 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 1.67 +/-6.69 11.5 +/-6.70 19.5 pCi/g TXJ1 08/04/22 2135 2295678 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 04/08/22 0931 2295010 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" 2295041 116 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295678 66.4 (25%-125%)

Page 39 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-QIGS-031-SS Project: ENRG08001 Sample ID: 587450019 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FIGS-032-SS Project: ENRG08001 Sample ID: 587450020 Client ID: ENRG080 Matrix: Soil Collect Date: 22-MAR-22 Receive Date: 07-APR-22 Collector: Client Moisture: 8.27%

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 +/-0.152 0.163 +/-0.156 pCi/g RXF2 07/29/22 1250 2295332 1 Bismuth-211 UI 0.000 +/-0.303 0.426 +/-0.412 pCi/g Bismuth-212 0.968 +/-0.342 0.545 +/-0.355 pCi/g Bismuth-214 0.237 +/-0.107 0.0953 +/-0.110 pCi/g Cesium-134 U -0.00236 +/-0.0262 0.0510 +/-0.0263 0.173 pCi/g Cesium-137 1.33 +/-0.107 0.0511 +/-0.164 0.363 pCi/g Cobalt-60 U 0.00536 +/-0.0254 0.0528 +/-0.0255 0.109 pCi/g Europium-152 U -0.0191 +/-0.0687 0.124 +/-0.0693 0.869 pCi/g Europium-154 U -0.0595 +/-0.0755 0.123 +/-0.0803 0.799 pCi/g Lead-212 0.284 +/-0.0995 0.0798 +/-0.102 pCi/g Lead-214 0.221 +/-0.110 0.0963 +/-0.111 pCi/g Potassium-40 11.7 +/-1.07 0.462 +/-1.50 pCi/g Thallium-208 0.0930 +/-0.0609 0.0530 +/-0.0615 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U -0.00182 +/-0.0180 0.0334 +/-0.0180 0.0425 pCi/g KP1 08/09/22 1814 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 0.792 +/-6.54 11.3 +/-6.55 19.5 pCi/g TXJ1 08/04/22 2207 2295678 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 04/08/22 0931 2295010 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" 2295041 76.3 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295678 76.2 (25%-125%)

Page 41 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FIGS-032-SS Project: ENRG08001 Sample ID: 587450020 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 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FIGS-033-SS Project: ENRG08001 Sample ID: 587450021 Client ID: ENRG080 Matrix: Soil Collect Date: 22-MAR-22 Receive Date: 07-APR-22 Collector: Client Moisture: 6.74%

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 0.266 +/-0.180 0.293 +/-0.217 pCi/g RXF2 07/29/22 1251 2295332 1 Bismuth-211 UI 0.000 +/-0.604 0.273 +/-0.609 pCi/g Bismuth-212 U 0.541 +/-0.582 0.636 +/-0.584 pCi/g Bismuth-214 UI 0.000 +/-0.0974 0.177 +/-0.161 pCi/g Cesium-134 U 0.0126 +/-0.0301 0.0631 +/-0.0306 0.173 pCi/g Cesium-137 0.653 +/-0.0907 0.0446 +/-0.107 0.363 pCi/g Cobalt-60 U -0.00557 +/-0.0226 0.0460 +/-0.0228 0.109 pCi/g Europium-152 U 0.00884 +/-0.0597 0.125 +/-0.0598 0.869 pCi/g Europium-154 U 0.0329 +/-0.0914 0.195 +/-0.0926 0.799 pCi/g Lead-212 0.288 +/-0.0995 0.0620 +/-0.102 pCi/g Lead-214 0.362 +/-0.135 0.183 +/-0.138 pCi/g Potassium-40 9.44 +/-1.23 0.470 +/-1.51 pCi/g Thallium-208 0.0688 +/-0.0486 0.0461 +/-0.0490 pCi/g Rad Gas Flow Proportional Counting GFPC, Sr90, Solid "Dry Weight Corrected" Strontium-90 U 0.00511 +/-0.0185 0.0331 +/-0.0185 0.0425 pCi/g KP1 08/09/22 1814 2295041 2 Rad Liquid Scintillation Analysis Liquid Scint Ni63, Solid "Dry Weight Corrected" Nickel-63 U 0.490 +/-5.36 9.27 +/-5.36 19.5 pCi/g TXJ1 08/04/22 2239 2295678 3 The following Prep Methods were performed Method Description Analyst Date Time Prep Batch Dry Soil Prep Dry Soil Prep GL-RAD-A-021 CM2 04/08/22 0931 2295010 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" 2295041 85.5 (25%-125%)

Nickel Carrier Liquid Scint Ni63, Solid "Dry Weight Corrected" 2295678 78.4 (25%-125%)

Page 43 of 100 SDG: 587450

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 10, 2022

Contact:

Mr. Gerry Wood Project: Zion Solutions Client Sample ID: L1-12112A-FIGS-033-SS Project: ENRG08001 Sample ID: 587450021 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 44 of 100 SDG: 587450

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Report Date: August 10, 2022 Client : Zion Solutions Page 1 of 8 100 Shiloh Blvd.

Zion, Illinois

Contact:

Mr. Gerry Wood Workorder: 587450 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2295332 QC1205149656 587450001 DUP Actinium-228 U 0.238 0.393 pCi/g 2.34 (0% - 100%) RXF2 07/29/22 12:52 Uncert: +/-0.192 +/-0.175 TPU: +/-0.221 +/-0.179 Bismuth-211 U 0.285 U 0.198 pCi/g 0 N/A Uncert: +/-0.933 +/-0.669 TPU: +/-0.937 +/-0.673 Bismuth-212 U 0.268 U 0.305 pCi/g 0 N/A Uncert: +/-0.635 +/-0.366 TPU: +/-0.647 +/-0.392 Bismuth-214 UI 0.000 UI 0.000 pCi/g 0 N/A Uncert: +/-0.165 +/-0.111 TPU: +/-0.229 +/-0.200 Cesium-134 U 0.00983 U 0.0115 pCi/g 0 N/A Uncert: +/-0.0363 +/-0.0274 TPU: +/-0.0366 +/-0.0279 Cesium-137 0.0931 0.124 pCi/g 28.5 (0% - 100%)

Uncert: +/-0.0758 +/-0.0515 TPU: +/-0.0762 +/-0.0525 Cobalt-60 U 0.0144 U 0.0111 pCi/g 0 N/A Uncert: +/-0.0395 +/-0.0266 TPU: +/-0.0400 +/-0.0271 Europium-152 U 0.0370 U 0.0312 pCi/g 0 N/A Uncert: +/-0.0874 +/-0.0555 TPU: +/-0.0890 +/-0.0574 Europium-154 U 0.0266 U 0.0558 pCi/g 0 N/A Uncert: +/-0.103 +/-0.0684 TPU: +/-0.104 +/-0.0730 Lead-212 0.375 0.309 pCi/g 19.2 (0% - 100%)

Uncert: +/-0.0992 +/-0.0791 TPU: +/-0.103 +/-0.0832 Lead-214 0.361 0.293 pCi/g 21.1 (0% - 100%)

Uncert: +/-0.195 +/-0.0955 TPU: +/-0.198 +/-0.0986 Potassium-40 8.11 8.52 pCi/g 4.92 (0%-20%)

Uncert: +/-1.28 +/-1.12 TPU: +/-1.48 +/-1.38 Thallium-208 0.118 0.0550 pCi/g 72.9 (0% - 100%)

Uncert: +/-0.0588 +/-0.0425 TPU: +/-0.0598 +/-0.0428 QC1205149657 LCS Americium-241 485 525 pCi/g 108 (75%-125%) RXF2 07/29/22 12:52 Page 45 of 100 SDG: 587450

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 587450 Page 2 of 8 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2295332 Uncert: +/-5.50 TPU: +/-40.4 Actinium-228 U -0.586 pCi/g Uncert: +/-2.82 TPU: +/-2.83 Bismuth-211 U -1.39 pCi/g Uncert: +/-2.77 TPU: +/-2.84 Bismuth-212 U -5.01 pCi/g Uncert: +/-7.08 TPU: +/-7.45 Bismuth-214 U 0.845 pCi/g Uncert: +/-1.51 TPU: +/-1.56 Cesium-134 U -0.569 pCi/g Uncert: +/-0.568 TPU: +/-0.625 Cesium-137 157 164 pCi/g 105 (75%-125%)

Uncert: +/-3.65 TPU: +/-16.3 Cobalt-60 74.7 73.2 pCi/g 98 (75%-125%)

Uncert: +/-3.00 TPU: +/-6.47 Europium-152 U 0.497 pCi/g Uncert: +/-1.30 TPU: +/-1.32 Europium-154 U -0.385 pCi/g Uncert: +/-0.889 TPU: +/-0.907 Lead-212 U -0.530 pCi/g Uncert: +/-0.706 TPU: +/-0.746 Lead-214 U 1.05 pCi/g Uncert: +/-0.997 TPU: +/-1.11 Potassium-40 U -0.744 pCi/g Uncert: +/-2.57 TPU: +/-2.59 Thallium-208 U -0.568 pCi/g Uncert: +/-0.572 TPU: +/-0.629 QC1205149655 MB Actinium-228 U -0.0212 pCi/g RXF2 07/29/2212:51 Uncert: +/-0.0665 TPU: +/-0.0672 Bismuth-211 U -0.0972 pCi/g Page 46 of 100 SDG: 587450

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 587450 Page 3 of 8 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2295332 Uncert: +/-0.105 TPU: +/-0.114 Bismuth-212 U -0.00458 pCi/g Uncert: +/-0.172 TPU: +/-0.172 Bismuth-214 U 0.0382 pCi/g Uncert: +/-0.0773 TPU: +/-0.0793 Cesium-134 U 0.00687 pCi/g Uncert: +/-0.0204 TPU: +/-0.0206 Cesium-137 U -0.0142 pCi/g Uncert: +/-0.0151 TPU: +/-0.0165 Cobalt-60 U 0.00749 pCi/g Uncert: +/-0.0124 TPU: +/-0.0128 Europium-152 U -0.0104 pCi/g Uncert: +/-0.0363 TPU: +/-0.0366 Europium-154 U 0.0105 pCi/g Uncert: +/-0.0183 TPU: +/-0.0190 Lead-212 U -0.0137 pCi/g Uncert: +/-0.0345 TPU: +/-0.0351 Lead-214 U -0.0465 pCi/g Uncert: +/-0.0394 TPU: +/-0.0448 Potassium-40 U 0.0106 pCi/g Uncert: +/-0.299 TPU: +/-0.299 Thallium-208 U -0.0178 pCi/g Uncert: +/-0.0187 TPU: +/-0.0204 Batch 2295333 QC1205149659 587450003 DUP Actinium-228 0.168 0.178 pCi/g 5.68 (0% - 100%) MJH1 07/28/2221:05 Uncert: +/-0.123 +/-0.148 TPU: +/-0.124 +/-0.149 Bismuth-211 UI 0.000 U 0.120 pCi/g 0 N/A Uncert: +/-0.249 +/-0.0250 TPU: +/-0.254 +/-0.0268 Bismuth-212 U -0.175 U -0.199 pCi/g 0 N/A Uncert: +/-0.320 +/-0.291 TPU: +/-0.330 +/-0.305 Page 47 of 100 SDG: 587450

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 587450 Page 4 of 8 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2295333 Bismuth-214 0.210 U 0.0875 pCi/g 36.9 (0% - 100%)

Uncert: +/-0.0894 +/-0.130 TPU: +/-0.0914 +/-0.136 Cesium-134 U 0.0421 U 0.00150 pCi/g 0 N/A Uncert: +/-0.0461 +/-0.0185 TPU: +/-0.0500 +/-0.0185 Cesium-137 U 0.0118 0.0260 pCi/g 42.3 (0% - 100%)

Uncert: +/-0.0392 +/-0.0227 TPU: +/-0.0392 +/-0.0229 Cobalt-60 U -0.00480 U 0.00821 pCi/g 0 N/A Uncert: +/-0.0239 +/-0.0177 TPU: +/-0.0240 +/-0.0181 Europium-152 U 0.000947 U 0.0171 pCi/g 0 N/A Uncert: +/-0.0485 +/-0.0541 TPU: +/-0.0485 +/-0.0547 Europium-154 U 0.00908 U 0.0152 pCi/g 0 N/A Uncert: +/-0.0586 +/-0.0577 TPU: +/-0.0588 +/-0.0581 Lead-212 0.287 0.134 pCi/g 72.7 * (0%-20%)

Uncert: +/-0.0691 +/-0.0690 TPU: +/-0.0731 +/-0.0699 Lead-214 0.215 0.289 pCi/g 29.5 * (0%-20%)

Uncert: +/-0.0902 +/-0.0755 TPU: +/-0.134 +/-0.0790 Potassium-40 4.54 5.30 pCi/g 15.5 (0%-20%)

Uncert: +/-0.854 +/-0.925 TPU: +/-0.947 +/-1.04 Thallium-208 U 0.0192 0.0438 pCi/g 16.8 (0% - 100%)

Uncert: +/-0.0412 +/-0.0357 TPU: +/-0.0412 +/-0.0359 QC1205149660 LCS Americium-241 485 521 pCi/g 108 (75%-125%) MJH1 07/28/2221:02 Uncert: +/-10.7 TPU: +/-60.1 Actinium-228 U -2.05 pCi/g Uncert: +/-2.10 TPU: +/-2.31 Bismuth-211 U 0.128 pCi/g Uncert: +/-2.76 TPU: +/-2.77 Bismuth-212 U 7.86 pCi/g Uncert: +/-5.67 TPU: +/-6.73 Bismuth-214 U 0.345 pCi/g Uncert: +/-0.872 TPU: +/-0.886 Page 48 of 100 SDG: 587450

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 587450 Page 5 of 8 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2295333 Cesium-134 U 0.0206 pCi/g Uncert: +/-0.520 TPU: +/-0.520 Cesium-137 157 154 pCi/g 98.3 (75%-125%)

Uncert: +/-3.09 TPU: +/-13.6 Cobalt-60 75.1 74.5 pCi/g 99.3 (75%-125%)

Uncert: +/-2.68 TPU: +/-7.81 Europium-152 U 0.119 pCi/g Uncert: +/-1.47 TPU: +/-1.47 Europium-154 U 0.290 pCi/g Uncert: +/-0.871 TPU: +/-0.881 Lead-212 U 0.499 pCi/g Uncert: +/-0.683 TPU: +/-0.721 Lead-214 U -0.465 pCi/g Uncert: +/-1.02 TPU: +/-1.04 Potassium-40 U -0.968 pCi/g Uncert: +/-1.63 TPU: +/-1.69 Thallium-208 U 0.131 pCi/g Uncert: +/-0.431 TPU: +/-0.435 QC1205149658 MB Actinium-228 U 0.0117 pCi/g MJH1 07/28/2217:42 Uncert: +/-0.0872 TPU: +/-0.0874 Bismuth-211 U 0.0210 pCi/g Uncert: +/-0.232 TPU: +/-0.232 Bismuth-212 U 0.0618 pCi/g Uncert: +/-0.242 TPU: +/-0.244 Bismuth-214 U -0.00876 pCi/g Uncert: +/-0.0405 TPU: +/-0.0407 Cesium-134 U -0.0193 pCi/g Uncert: +/-0.0178 TPU: +/-0.0199 Cesium-137 U 0.0114 pCi/g Uncert: +/-0.0183 TPU: +/-0.0191 Page 49 of 100 SDG: 587450

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 587450 Page 6 of 8 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gamma Spec Batch 2295333 Cobalt-60 U 0.00413 pCi/g Uncert: +/-0.0148 TPU: +/-0.0150 Europium-152 U 0.0258 pCi/g Uncert: +/-0.0483 TPU: +/-0.0498 Europium-154 U 0.0189 pCi/g Uncert: +/-0.0261 TPU: +/-0.0275 Lead-212 U 0.0163 pCi/g Uncert: +/-0.0319 TPU: +/-0.0328 Lead-214 U -0.0253 pCi/g Uncert: +/-0.0456 TPU: +/-0.0470 Potassium-40 U 0.0234 pCi/g Uncert: +/-0.279 TPU: +/-0.279 Thallium-208 U -0.00342 pCi/g Uncert: +/-0.0216 TPU: +/-0.0216 Rad Gas Flow Batch 2295040 QC1205149167 587450001 DUP Strontium-90 U -0.00507 0.0774 pCi/g 228* (0% - 100%) KP1 08/09/22 19:01 Uncert: +/-0.0115 +/-0.0263 TPU: +/-0.0115 +/-0.0298 QC1205149168 LCS Strontium-90 1.67 1.81 pCi/g 108 (75%-125%) KP1 08/03/22 18:25 Uncert: +/-0.113 TPU: +/-0.342 QC1205149166 MB Strontium-90 U -0.00293 pCi/g KP1 08/03/22 18:25 Uncert: +/-0.0115 TPU: +/-0.0115 Batch 2295041 QC1205149170 587450012 DUP Strontium-90 U -0.0248 U -0.00579 pCi/g 0 N/A KP1 08/09/22 18:13 Uncert: +/-0.0201 +/-0.0222 TPU: +/-0.0201 +/-0.0222 QC1205149171 LCS Strontium-90 1.67 1.66 pCi/g 99.5 (75%-125%) KP1 08/09/22 18:13 Uncert: +/-0.0902 TPU: +/-0.310 QC1205149169 MB Page 50 of 100 SDG: 587450

GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 587450 Page 7 of 8 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time Rad Gas Flow Batch 2295041 Strontium-90 U 0.00486 pCi/g KP1 08/09/22 18:13 Uncert: +/-0.0182 TPU: +/-0.0182 Rad Liquid Scintillation Batch 2295673 QC1205150420 587450003 DUP Nickel-63 U 0.555 U 4.38 pCi/g 0 N/A TXJ1 08/04/22 23:19 Uncert: +/-6.01 +/-6.85 TPU: +/-6.01 +/-6.90 QC1205150421 LCS Nickel-63 427 447 pCi/g 105 (75%-125%) TXJ1 08/04/22 23:49 Uncert: +/-14.2 TPU: +/-84.1 QC1205150419 MB Nickel-63 U -0.145 pCi/g TXJ1 08/04/22 22:48 Uncert: +/-6.37 TPU: +/-6.37 Batch 2295678 QC1205150427 587450013 DUP Nickel-63 U -0.117 U -2.66 pCi/g 0 N/A TXJ1 08/04/22 23:42 Uncert: +/-6.23 +/-5.41 TPU: +/-6.23 +/-5.41 QC1205150428 LCS Nickel-63 402 368 pCi/g 91.7 (75%-125%) TXJ1 08/05/22 00:14 Uncert: +/-12.5 TPU: +/-69.3 QC1205150426 MB Nickel-63 U 1.39 pCi/g TXJ1 08/04/22 23:10 Uncert: +/-5.20 TPU: +/-5.21 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.

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GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 - (843) 556-8171 - www.gel.com QC Summary Workorder: 587450 Page 8 of 8 Parmname NOM Sample Qual QC Units RPD% REC% Range Anlst Date Time 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.

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Page 53 of 100 SDG: 587450 Page 54 of 100 SDG: 587450 Page 55 of 100 SDG: 587450 Page 56 of 100 SDG: 587450 Page 57 of 100 SDG: 587450 Page 58 of 100 SDG: 587450 Page 59 of 100 SDG: 587450 Page 60 of 100 SDG: 587450 Page 61 of 100 SDG: 587450 Page 62 of 100 SDG: 587450 Page 63 of 100 SDG: 587450 Page 64 of 100 SDG: 587450 Page 65 of 100 SDG: 587450 Page 66 of 100 SDG: 587450 Page 67 of 100 SDG: 587450 Page 68 of 100 SDG: 587450 Page 69 of 100 SDG: 587450 Page 70 of 100 SDG: 587450 Page 71 of 100 SDG: 587450 Page 72 of 100 SDG: 587450 Page 73 of 100 SDG: 587450 Page 74 of 100 SDG: 587450 Page 75 of 100 SDG: 587450 Page 76 of 100 SDG: 587450 Page 77 of 100 SDG: 587450 Page 78 of 100 SDG: 587450 Page 79 of 100 SDG: 587450 Page 80 of 100 SDG: 587450 Page 81 of 100 SDG: 587450 Page 82 of 100 SDG: 587450 Page 83 of 100 SDG: 587450 Page 84 of 100 SDG: 587450 Page 85 of 100 SDG: 587450 Page 86 of 100 SDG: 587450 Page 87 of 100 SDG: 587450 Page 88 of 100 SDG: 587450 Zachary Worsham From: Gerald Wood-ext <glwood-ext@energysolutions.com>

Sent: Tuesday, July 26, 2022 5:02 PM To: Zachary Worsham Cc: Team Worsham

Subject:

samples needing additional analysis

[EXTERNAL EMAIL] DO NOT CLICK links or attachments unless you recognize the sender and know the content is safe.

Hello Zac, Please analyze the following samples on a 10 day TAT, if any of the requested analysis cannot be executed on a 10 day TAT please let me know.

The Sr90 and Ni63 MDAs are listed as well as the other nuclides we more typically request.

The following samples in GEL custody will need 5 ROC Soil analysis:

L110201CFSGS211SS L110201CFSGS212SS L110201DFSGS205SS L110201DFSGS213SS L110202CFSGS204SS L110202CFSGS211SS L110202DFSGS216SS L110202DFSGS215SS L112201DFSGS309SS L112201DFSGS315SS L112201EFSGS207SS L112201EFSGS208SS L112205AFSGS311SS L112205AFSGS312SS L112112AFSGS048SS L112112AFSGS061SS L112112AFIGS029SS L112112AFIGS031SS L112112AQIGS031SS L112112AFIGS032SS L112112AFIGS033SS 5 ROC (soil)

Nuclide MDA (pCi/gm)

K-40 --

Bi-211/212/214 --

Pb212/214 --

Ac-228 --

1 Page 89 of 100 SDG: 587450

Ti-208 --

Co-60 1.091E-01 Cs-134 1.733E-01 Cs-137 3.630E-01 Eu-152 8.700E-01 Eu-154 8.000E-01 Ni-63 1.953E+01 Sr-90 4.250E-02 B/R, Gerry W.

Gerald L. Wood ZSRP Site Closure Team Zion Nuclear Power Station glwoodext@energysolutions.com 518.683.8849 2

Page 90 of 100 SDG: 587450

List of current GEL Certifications as of 10 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 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 91 of 100 SDG: 587450

Radiochemistry Technical Case Narrative Zion Solutions SDG #: 587450 Product: Dry Weight Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2295002 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 587450001 L1-10201C-FSGS-211-SS 587450002 L1-10201C-FSGS-212-SS 587450003 L1-10201D-FSGS-205-SS 587450004 L1-10201D-FSGS-213-SS 587450005 L1-10202C-FSGS-204-SS 587450006 L1-10202C-FSGS-211-SS 587450007 L1-10202D-FSGS-216-SS 587450008 L1-10202D-FSGS-215-SS 587450009 L1-12201D-FSGS-309-SS 587450010 L1-12201D-FSGS-315-SS 587450011 L1-12201E-FSGS-207-SS 587450012 L1-12201E-FSGS-208-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 Data transferred from batches 2276388,2284255, 2284251, 2286088 and 2288317.

Product: Dry Weight Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2295010 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 587450013 L1-12205A-FSGS-311-SS 587450014 L1-12205A-FSGS-312-SS Page 92 of 100 SDG: 587450

587450015 L1-12112A-FSGS-048-SS 587450016 L1-12112A-FSGS-061-SS 587450017 L1-12112A-FIGS-029-SS 587450018 L1-12112A-FIGS-031-SS 587450019 L1-12112A-QIGS-031-SS 587450020 L1-12112A-FIGS-032-SS 587450021 L1-12112A-FIGS-033-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 Data transferred from 2286097,2251286 and 2251288.

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: 2295332 Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batches: 2295002 and 2295010 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 587450001 L1-10201C-FSGS-211-SS 587450002 L1-10201C-FSGS-212-SS 587450015 L1-12112A-FSGS-048-SS 587450016 L1-12112A-FSGS-061-SS 587450017 L1-12112A-FIGS-029-SS 587450018 L1-12112A-FIGS-031-SS 587450019 L1-12112A-QIGS-031-SS 587450020 L1-12112A-FIGS-032-SS 587450021 L1-12112A-FIGS-033-SS 1205149655 Method Blank (MB) 1205149656 587450001(L1-10201C-FSGS-211-SS) Sample Duplicate (DUP) 1205149657 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 Page 93 of 100 SDG: 587450

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 false UI positive due Bismuth-211 587450019 L1-12112A-QIGS-031-SS to high counting uncertainty.

Bismuth-211 587450021 L1-12112A-FIGS-033-SS Results are considered a false UI Actinium-228 587450020 L1-12112A-FIGS-032-SS positive due to high peak-width.

Bismuth-212 587450017 L1-12112A-FIGS-029-SS Cesium-137 587450002 L1-10201C-FSGS-212-SS Results are considered a false UI Actinium-228 587450018 L1-12112A-FIGS-031-SS positive due to low abundance.

Bismuth-211 587450002 L1-10201C-FSGS-212-SS Bismuth-211 587450015 L1-12112A-FSGS-048-SS Bismuth-211 587450016 L1-12112A-FSGS-061-SS Bismuth-211 587450017 L1-12112A-FIGS-029-SS Bismuth-211 587450018 L1-12112A-FIGS-031-SS Bismuth-211 587450020 L1-12112A-FIGS-032-SS Bismuth-214 587450001 L1-10201C-FSGS-211-SS Bismuth-214 587450021 L1-12112A-FIGS-033-SS Bismuth-214 1205149656 L1-10201C-FSGS-211-SS(587450001DUP)

Cesium-134 587450017 L1-12112A-FIGS-029-SS Page 94 of 100 SDG: 587450

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: 2295333 Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batches: 2295002 and 2295010 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 587450003 L1-10201D-FSGS-205-SS 587450004 L1-10201D-FSGS-213-SS 587450005 L1-10202C-FSGS-204-SS 587450006 L1-10202C-FSGS-211-SS 587450007 L1-10202D-FSGS-216-SS 587450008 L1-10202D-FSGS-215-SS 587450009 L1-12201D-FSGS-309-SS 587450010 L1-12201D-FSGS-315-SS 587450011 L1-12201E-FSGS-207-SS 587450012 L1-12201E-FSGS-208-SS 587450013 L1-12205A-FSGS-311-SS 587450014 L1-12205A-FSGS-312-SS 1205149658 Method Blank (MB) 1205149659 587450003(L1-10201D-FSGS-205-SS) Sample Duplicate (DUP) 1205149660 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 1205149659 (L1-10201D-FSGS-205-SSDUP) Lead-212 RPD 72.7* (0.00%-20.00%) RER 2.96 (0-3)

Lead-214 RPD 29.5* (0.00%-20.00%) RER 0.939 (0-3)

Qualifier Information Page 95 of 100 SDG: 587450

Qualifier Reason Analyte Sample Client Sample Results are considered a false UI positive due to high counting Bismuth-211 587450009 L1-12201D-FSGS-309-SS uncertainty.

Bismuth-211 587450013 L1-12205A-FSGS-311-SS Bismuth-212 587450005 L1-10202C-FSGS-204-SS Bismuth-214 587450013 L1-12205A-FSGS-311-SS Results are considered a false UI Bismuth-212 587450008 L1-10202D-FSGS-215-SS positive due to high peak-width.

Bismuth-212 587450009 L1-12201D-FSGS-309-SS Results are considered a false UI Bismuth-211 587450003 L1-10201D-FSGS-205-SS positive due to interference.

Results are considered a false UI Bismuth-211 587450005 L1-10202C-FSGS-204-SS positive due to low abundance.

Bismuth-211 587450006 L1-10202C-FSGS-211-SS Bismuth-211 587450007 L1-10202D-FSGS-216-SS Bismuth-211 587450008 L1-10202D-FSGS-215-SS Bismuth-211 587450010 L1-12201D-FSGS-315-SS Bismuth-214 587450011 L1-12201E-FSGS-207-SS Lead-212 587450012 L1-12201E-FSGS-208-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: 2295040 Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2295002 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 587450001 L1-10201C-FSGS-211-SS 587450002 L1-10201C-FSGS-212-SS 587450003 L1-10201D-FSGS-205-SS 587450004 L1-10201D-FSGS-213-SS 587450005 L1-10202C-FSGS-204-SS 587450006 L1-10202C-FSGS-211-SS 587450007 L1-10202D-FSGS-216-SS 587450008 L1-10202D-FSGS-215-SS 587450009 L1-12201D-FSGS-309-SS Page 96 of 100 SDG: 587450

587450010 L1-12201D-FSGS-315-SS 587450011 L1-12201E-FSGS-207-SS 1205149166 Method Blank (MB) 1205149167 587450001(L1-10201C-FSGS-211-SS) Sample Duplicate (DUP) 1205149168 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 sandy with various sized particles.

Quality Control (QC) Information Duplication Criteria between QC Sample and Duplicate Sample The Sample and Duplicate, (See Below), did not meet the duplication criteria due to the non-homogenous matrix of the samples.

Sample Analyte Value 1205149167 (L1-10201C-FSGS-211-SSDUP) Strontium-90 RPD 228* (0.0%-100.0%)

Technical Information Negative > 3 sigma TPU Sample results were more negative than the three sigma TPU. The background control charts were examined and the detectors were determined to be fully functional.

Sample Analyte Value 587450003 (L1-10201D-FSGS-205-SS) Strontium-90 Negative Result > 3 sigma value 587450005 (L1-10202C-FSGS-204-SS) Strontium-90 Negative Result > 3 sigma value Recounts Sample 587450011 (L1-12201E-FSGS-207-SS) was recounted due to results more negative than the three sigma TPU. The second count is reported. Sample 1205149167 (L1-10201C-FSGS-211-SSDUP) was recounted due to a suspected false positive. The recount is reported.

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: 2295041 Page 97 of 100 SDG: 587450

Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batches: 2295002 and 2295010 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 587450012 L1-12201E-FSGS-208-SS 587450013 L1-12205A-FSGS-311-SS 587450014 L1-12205A-FSGS-312-SS 587450015 L1-12112A-FSGS-048-SS 587450016 L1-12112A-FSGS-061-SS 587450017 L1-12112A-FIGS-029-SS 587450018 L1-12112A-FIGS-031-SS 587450019 L1-12112A-QIGS-031-SS 587450020 L1-12112A-FIGS-032-SS 587450021 L1-12112A-FIGS-033-SS 1205149169 Method Blank (MB) 1205149170 587450012(L1-12201E-FSGS-208-SS) Sample Duplicate (DUP) 1205149171 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 Procedure Variations Per Group Leader instructions, some variations were necessary to analyze difficult matrix. (Variations follow) 1205149170 (L1-12201E-FSGS-208-SSDUP), 587450012 (L1-12201E-FSGS-208-SS), 587450013 (L1-12205A-FSGS-311-SS) and 587450018 (L1-12112A-FIGS-031-SS). Additional clean up steps required.

Samples were out of calibration range after initial column work. 1205149170 (L1-12201E-FSGS-208-SSDUP),

587450012 (L1-12201E-FSGS-208-SS), 587450013 (L1-12205A-FSGS-311-SS) and 587450018 (L1-12112A-FIGS-031-SS).

Homogenous Matrix Samples were non-homogenous matrix. sandy Product: Liquid Scint Ni63, Solid Analytical Method: DOE RESL Ni-1, Modified Analytical Procedure: GL-RAD-A-022 REV# 19 Analytical Batch: 2295673 Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2295002 Page 98 of 100 SDG: 587450

The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 587450001 L1-10201C-FSGS-211-SS 587450002 L1-10201C-FSGS-212-SS 587450003 L1-10201D-FSGS-205-SS 587450004 L1-10201D-FSGS-213-SS 587450005 L1-10202C-FSGS-204-SS 587450006 L1-10202C-FSGS-211-SS 587450007 L1-10202D-FSGS-216-SS 587450008 L1-10202D-FSGS-215-SS 587450009 L1-12201D-FSGS-309-SS 587450010 L1-12201D-FSGS-315-SS 587450011 L1-12201E-FSGS-207-SS 587450012 L1-12201E-FSGS-208-SS 1205150419 Method Blank (MB) 1205150420 587450003(L1-10201D-FSGS-205-SS) Sample Duplicate (DUP) 1205150421 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.

Product: Liquid Scint Ni63, Solid Analytical Method: DOE RESL Ni-1, Modified Analytical Procedure: GL-RAD-A-022 REV# 19 Analytical Batch: 2295678 Preparation Method: Dry Soil Prep Preparation Procedure: GL-RAD-A-021 REV# 24 Preparation Batch: 2295010 The following samples were analyzed using the above methods and analytical procedure(s).

GEL Sample ID# Client Sample Identification 587450013 L1-12205A-FSGS-311-SS 587450014 L1-12205A-FSGS-312-SS 587450015 L1-12112A-FSGS-048-SS 587450016 L1-12112A-FSGS-061-SS 587450017 L1-12112A-FIGS-029-SS 587450018 L1-12112A-FIGS-031-SS 587450019 L1-12112A-QIGS-031-SS 587450020 L1-12112A-FIGS-032-SS 587450021 L1-12112A-FIGS-033-SS 1205150426 Method Blank (MB) 1205150427 587450013(L1-12205A-FSGS-311-SS) Sample Duplicate (DUP) 1205150428 Laboratory Control Sample (LCS)

Page 99 of 100 SDG: 587450

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 100 of 100 SDG: 587450

ML22237A212

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