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HomeMy WebLinkAboutDRC-2023-075924 - 0901a068812b6336r~1; I f ~~£' -. l E~ERGY FUELS November 7, 2023 Div of Waste Management and Radiation Control NOV 13 2023 Sent VIA OVERNIGHT DELIVERY Mr. Doug Hansen Director Division of Waste Management and Radiation Control Utah Department of Environmental Quality I 95 North 1950 West Salt Lake City, UT 84116 Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600 Lakewood, CO, US , 80228 303 974 2140 \nvw .en1.:r2vfuels .com Re: Transmittal of Annual Tailings System Wastewater Monitoring Report Groundwater Quality Discharge Permit UGW370004 White Mesa Uranium Mill Dear Mr. Hansen: Enclosed are two copies of the White Mesa Uranium Mill Annual Tailings System Wastewater Monitoring Report for 2023 as required by the Groundwater Quality Discharge Permit UGW370004, as well as two CDs each containing a word searchable electronic copy of the report. If you should have any questions regarding this report please contact me. Yours very truly, {~Jf~ ENERGY FUELS RESOURCES (USA) INC. Kathy Weinel Director, Regulatory Compliance cc : Scott A. Bakken Garrin Pa lmer Dave Frydenlund Logan Shumway DRC-2023-075924 60~ t;;.-;~ERGYFUELS November 7, 2023 Sent VIA OVERNIGHT DELIVERY Mr. Doug Hansen Director Division of Waste Management and Radiation Control Utah Department of Environmental Quality 195 North 1950 West Salt Lake City, UT 84116 Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600 Lakewood, CO, US, 80228 303 974 2140 www .ener~ fuels .c om Re: Transmittal of Annual Tailings System Wastewater Monitoring Report Groundwater Quality Discharge Permit UGW370004 White Mesa Uranium Mill Dear Mr. Hansen: Enclosed are two copies of the White Mesa Uranium Mill Annual Tailings System Wastewater Monitoring Report for 2023 as required by the Groundwater Quality Discharge Permit UGW370004, as well as two CDs each containing a word searchable electronic copy of the report. If you should have any questions regarding this report please contact me. Yours very truly, -;(~Jr-~ ENERGY FUELS RESOURCES (USA) INC. Kathy Weinel Director, Regulatory Compliance cc : Scott A. Bakken Garrin Palmer Dave Frydenlund Logan Shumway White Mesa Uranium Mill 2023 Annual Tailings System Wastewater Sampling Report State of Utah Groundwater Discharge Permit No. UGW370004 60~ 'Cf~NERGYFUELS Prepared by: Energy Fuels Resources (USA) Inc. 225 Union Boulevard, Suite 600 Lakewood, CO 80228 November 7, 2023 TABLE OF CONTENTS 1.0 INTRODUCTION ..................................................................................................................... 1 2.0 SUMMARY OF MILL TAILINGS SYSTEM ACTIVITIES IN 2023 .................................... 1 2.1 Cell 1 ...................................................................................................................................... 2 2.2 Cell 2 ...................................................................................................................................... 2 2.3 Cell 3 ...................................................................................................................................... 2 2.4 Cell 4A ................................................................................................................................... 2 2.5 Cell 4B ................................................................................................................................... 2 3.0 SAMPLING EVENTS AND SAMPLING METHODOLOGY .............................................. .2 3 .1 Sampling Events .................................................................................................................... 2 3.2 Field Data ............................................................................................................................... 3 3.3 Sampling Methodology, Equipment and Decontamination Procedures ................................ 3 3.3.1 Cells ................................................................................................................................ 3 3.3.2 Cell 2 Slimes Drain ......................................................................................................... 4 3.3.3 Cell 4A Leak Detection Systems ................................................................................... .4 3.3.4 Cell 4B Leak Detection Systems ................................................................................... .4 3.3.5 Cells 1, 2, 3, .................................................................................................................... 4 3.4 Field QC Samples .................................................................................................................. 4 3.5 Laboratory Results ................................................................................................................. 4 4.0 QUALITY ASSURANCE AND DATA EVALUATION ........................................................ 5 4.1 Adherence to Sampling Plan and Permit Requirements ........................................................ 5 4.2 Analyte Completeness Review .............................................................................................. 5 4.3 Data Validation ...................................................................................................................... 5 4.3.1 Field Data QA/QC Evaluation ........................................................................................ 6 4.3.2 Holding Time Evaluation ............................................................................................... 6 4.3.3 Laboratory Receipt Temperature Check ......................................................................... 6 4.3.4 Analytical Method Check ............................................................................................... 6 4.3 .5 Reporting Limit Evaluation ............................................................................................ 7 4.3.6 Trip Blank Evaluation ..................................................................................................... 8 4.3.7 QA/QC Evaluation for Sample Duplicates ..................................................................... 8 4.3.8 Radiologic Counting Error ............................................................................................. 9 4.3.9 Laboratory Matrix QC Evaluation .................................................................................. 9 1 5.0 HISTORIC DATA ................................................................................................................... 11 6.0 SUMMARY AND CONCLUSIONS ...................................................................................... 11 6.1 Cell 1 .................................................................................................................................... 11 6.2 Cell 3 .................................................................................................................................... 12 6.3 Cell 4A ................................................................................................................................. 12 6.4 Cell 4B ................................................................................................................................. 12 6.5 Cell 2 Slimes Drain .............................................................................................................. 13 6.6 Cells 3, 4A and 4B Slimes Drain ......................................................................................... 13 6. 7 Cells 1, 2 , and 3 Leak Detection Systems .......................................................................... .14 6.8 Cell 4A Leak Detection System .......................................................................................... 14 6.9 Cell 4B Leak Detection System .......................................................................................... .14 6.10 Summary and Conclusions of Analytical Results ............................................................. 15 7.0 CORRECTIVE ACTION REPORT ........................................................................................ 15 7.1 Assessment of Corrective Actions from Previous Period .................................................... 15 8.0 SIGNATURE AND CERTIFICATION .................................................................................. 16 11 LIST OF TABLES Table 1 Summary of Tailings System Wastewater Monitoring INDEX OF TABS Tab A Tailings and Slimes Drain Field Sheets Tab B Sample Location Figures Tab C Laboratory Analytical Reports Tab D Chemical and Radiological Summary Tables Tab E Quality Assurance and Data Validation Tables E-1 Holding Time Evaluation E-2 Laboratory Receipt Temperature Check E-3 Analytical Method Check E-4 Reporting Limit Evaluation E-5 Trip Blank Evaluation E-6 QA/QC Evaluation for Sample Duplicates E-7 Radiologic Counting Error E-8 Laboratory Matrix QC Evaluation 111 2023 ANNUAL TAILINGS SYSTEM WASTEWATER SAMPLING REPORT 1.0 INTRODUCTION This is the 2023 Annual Tailings System Wastewater Sampling Report for the Energy Fuels Resources (USA) Inc. ("EFRI") White Mesa Mill (the "Mill"), as required under Part I.F.9 of the Mill's State of Utah Groundwater Discharge Permit No. UGW370004 (the "Permit") and Section 6.0 of the Mill's Sampling and Analysis Plan for The Tailings Management System, Leak Detection Systems and Slimes Drains, Revision: 3.0, dated July 8, 2016 (the "Sampling Plan") and approved by the State of Utah Division of Waste Management and Radiation Control ("DWMRC") on August 8, 2016. Cell solution and slimes drain sampling is required under the Sampling Plan and Part I.E. IO of the Permit to be conducted on an annual basis in August of each year for the solutions in Cells 1, 3, 4A, and 4B, the solutions in the slimes drains in Cells 2, 3, 4A, and 4B (for Cells 3, 4A and 4B after the commencement of dewatering), the solutions in the leak detection system ("LDS") in Cell 4A and 4B and any detected solutions in the LDS in Cells 1, 2, and 3 at the time of the August Sampling event. The results of the sampling event are required to be reported to the DWMRC with the Mill's Third Quarter Groundwater Monitoring Report due December 1, of each year. The 2023 sampling event was conducted August 29, 2023. 2.0 SUMMARY OF MILL TAILINGS SYSTEM ACTIVITIES IN 2023 This section provides a brief description of the Mill's tailings management system ("TMS"), and any changes that were made as a result of Mill activities during the reporting year. A description of which systems were sampled is provided in Section 3.0. The Mill is designed not to discharge to groundwater or surface waters. Instead, the Mill TMS utilizes tailings and evaporation cells for disposal, evaporation, and management of Mill tailings, effluents, and other wastes as indicated below: • Cell I: dedicated to evaporation of Mill waste solutions; • Cell 2: contains Mill tailings and has been closed to tailings disposal since 1995 and l le.(2) byproduct materials since 2000 . Cell 2 Phase 1 cover placement commenced in April 2016; • Cell 3: contains Mill tailings and is in the final stages of filling. It also accepts other Mill wastes and l le.(2) material from in-situ recovery ("ISR") operations; • Cell 4A: receives Mill tailings and is used for evaporation of Mill solutions; and • Cell 4B: is used for evaporation of Mill solutions. I 2.1 Cell 1 Cell 1 is a 55-acre impoundment built in June of 1981. It operates as an evaporation pond which receives solutions only. Cell 1 is equipped with a LDS. In 2023, Cell 1 received fluid from the Mill process, storm water run-off, and Mill laboratory waste. The LDS in Cell 1 was dry in 2023. 2.2 Cell 2 Cell 2 is a 67-acre impoundment built in May of 1980. Cell 2 contains Mill tailings and has been closed to tailings disposal since 1995 and 1 le.(2) byproduct materials since 2000. Cell 2 Phase 1 cover placement commenced in April 2016. Cell 2 is equipped with a LDS and a slimes drain. The LDS was dry in 2023. As part of closure activities, EFRI began monitoring the slimes drain system in 2008. The fluid from the slimes drain is pumped to Cell 4A. Cell 2 no longer receives any solutions or solids. 2.3 Cell 3 Cell 3 is a 71-acre impoundment built in September 1982. Cell 3 is nearly full of solids. This cell is equipped with a LDS and a slimes drain. The LDS was dry in 2023 and the slimes drain system will be monitored once dewatering begins. In 2023, Cell 3 received solid Mill waste (trash) and solid 1 le.2 byproduct material from in situ recovery ISR facilities. There was no liquid pool during the 2023 sampling event due to evaporation caused by extreme local drought conditions and high temperatures. Cell 3 liquids were not sampled in 2023. 2.4 Cell 4A Cell 4A is a 40-acre impoundment built in 2008. This cell is equipped with a LDS and a slimes drain. The slimes drain system will be monitored once dewatering begins. The LDS in Cell 4A was sampled in 2023, as described below. In 2023, Cell 4A received solutions from the Mill process, and some solid tailings sands. 2.5 Cell 4B Cell 4B is a 40-acre impoundment built in 2011. It operates as an evaporation pond which receives solutions only. Fresh water was added to Cell 4 B to address EPA Subpart W regulations in 2023. The LDS in Cell 4B was sampled in 2023, as described below. 3.0 SAMPLING EVENTS AND SAMPLING METHODOLOGY 3.1 Sampling Events Samples of solutions from Cells 1, 4A, 4B, the Cell 2 slimes drain and the Cell 4A and Cell 4B LDSs were collected on August 29, 2023. In accordance with the Permit, DWMRC was notified of the sampling event, and a DWMRC representative was present for a part of the sampling. The DWMRC representative collected split 2 sample aliquots at Cell 2 Slimes. Maps showing the locations of the solution and slimes drain and, when applicable, LDS sampling locations are attached under Tab B. Table 1, included in the Tables Tab, provides an overview of all solution monitoring samples collected during the current period and includes the sampling date, laboratory report date, and the work order/lab set ID associated with the analytical data. The Permit requires that the samples be analyzed for the water quality parameters listed in Table 2 of the Permit and SVOCs . Additionally, in order to further characterize the radiological constituents and physical properties of the solution, EFRI conducted voluntary analyses on the August 29, 2023 samples for radium- 226, thorium-228, thorium-230, thorium-232, uranium-233/234, uranium-235/236, uranium-238, and specific gravity. The additional data from the August 29, 2023 sampling event are included in separate data tables in Tab D. The gross alpha results have been evaluated and are included as required. These additional data are included in this report for informational purposes only. EFRI may or may not choose to continue these analyses in future sampling events. 3.2 Field Data Attached under Tab A are copies of all of the field data sheets recorded in association with the annual tailings system monitoring program. Sampling dates are listed in Table 1. 3.3 Sampling Methodology, Equipment and Decontamination Procedures As noted in the DWMRC-approved Sampling Plan, Revision 3.0, dated July 8, 2016 , field filtering and preservation of metals and gross alpha sample aliquots was not completed due to safety concerns associated with the filtering apparatus and the backpressure created by the increased viscosity of these samples. The gross alpha and metals aliquots were filtered and preserved as necessary by the analytical laboratory. It is important to note that field preservation of the samples is to preclude biological growth and prevent the inorganic analytes from precipitating. Based on past field data, the cell solutions and LDS and slimes drain samples are at a low pH at the time of collection without additional preservative. The addition of acidic preservatives in the field would add minimal if any protection from biological growth or precipitation. 3.3.1 Cells Cell solution samples were collected as noted above, at the cell sampling stations shown on the Figures in Tab B, using approved procedures described in the DWMRC-approved Sampling Plan, Section 3.1.2. Cells 1, 4A and 4B were sampled August 29, 2023. Cell 3 was dry in 2023 and therefore not sampled. Disposable or dedicated sampling equipment was used during this sampling event and, as such, rinsate samples were not required . 3 3.3.2 Cell 2 Slimes Drain Once a tailings cell has started the dewatering procedures, a sample will be collected from the slimes drain system. At this time, Cell 2 is the only slimes drain that requires sampling. The location of the slimes drain for Cell 2 is shown in Tab B. While Cells 3, 4A and 4B are equipped with slimes drain sample locations, Cells 3 and 4A are still active and Cell 4B is being used as an evaporation pond, and the slimes drains will not be pumped (and/or sampled) until dewatering operations have commenced. The Cell 2 slimes drain, shown on the Figures in Tab B, was sampled using a disposable bailer as noted in the DWMRC-approved Sampling Plan, Section 3.1.3. Due to the use of a disposable bailer, a rinsate sample was not required. 3.3.3 Cell 4A Leak Detection Systems The Cell 4A LDS sample was collected from the sampling station shown on the Figures in Tab B using a dedicated stainless steel bucket and ladle as noted in the DWMRC-approved Sampling Plan, Section 3 .2.2. 3.3.4 Cell 4B Leak Detection Systems The Cell 4B LDS sample was collected from the sampling station shown on the Figures in Tab B using a dedicated stainless steel bucket and ladle as noted in the DWMRC-approved Sampling Plan, Section 3.2.2. 3.3.5 Cells 1, 2, 3, The Cells 1, 2, and 3 LDSs were not sampled during the 2023 sampling event because the systems were dry. 3.4 Field QC Samples The field Quality Control ("QC") samples generated during this sampling event included one duplicate and one trip blank. Trip blanks were sent to each laboratory which received samples for Volatile Organic Compounds ("VOCs"). The duplicate sample (Cell 65) was submitted blind to the analytical laboratories. As previously stated, no rinsate blanks were collected during this sampling event as only dedicated or disposable equipment was used for sample collection. 3.5 Laboratory Results All analytical results were provided by one of the Mill's two contract analytical laboratories, GEL Laboratories ("GEL") or Pace Analytical ("Pace"). The analytical data as well as the laboratory Quality Assurance ("QA")/QC summaries are included under Tab C. 4 4.0 QUALITY ASSURANCE AND DATA EVALUATION The Permit requires that the annual tailings system wastewater sampling program be conducted in compliance with the requirements specified in the Mill's approved White Mesa Uranium Mill Groundwater Monitoring Quality Assurance Plan ("QAP"), the approved Sampling Plan and the Permit itself. To meet these requirements, the data validation completed for the tailings system wastewater sampling program and discussed in this Section utilized the requirements outlined in the QAP, the Permit and the approved Sampling Plan as necessary. The Mill Director, Regulatory Compliance performed a QA/QC review to confirm compliance of the monitoring program with the requirements of the Permit, the QAP, and the Sampling Plan. As required, data QA includes preparation and analysis of QC samples in the field, review of field procedures, an analyte completeness review, and quality control review of laboratory data methods and data. Identification of field QC samples that were collected and analyzed is provided in Section 3 .4 and 4.3 .1. Discussion of adherence to the Sampling Plan is provided in Section 4.1. Analytical completeness review results are provided in Section 4.2. The steps and tests applied to check laboratory data QA/QC are discussed in Section 4.3. The analytical laboratories have provided summary reports of the analytical QA/QC measurements necessary to maintain conformance with National Environmental Laboratory Accreditation Conference ("NELAC") certification and reporting protocol. The analytical laboratory QA/QC Summary Reports, including copies of the Chain of Custody forms for each set of Analytical Results, follow the analytical results under Tab C. Results of review of the laboratory QA/QC information are provided under Tab E and discussed in Section 4.3, below. 4.1 Adherence to Sampling Plan and Permit Requirements On a review of adherence by Mill personnel to the QA/QC requirements, the Director, Regulatory Compliance observed that QA/QC requirements established in the Permit, the QAP, and the Sampling Plan were met, as discussed below. 4.2 Analyte Completeness Review All analyses required by the Permit Table 2 were completed. In addition, all cell solution samples were analyzed for SVOCs as required by the Permit. It is important to note that the SVOC analyses include Tentatively Identified Compounds ("TI Cs"). The SVOC compound 4-chlorophenol would be reported in the TIC data list if detected. 4- chlorophenol was not detected. 4.3 Data Validation The QAP and the Permit identify the data validation steps and data quality control checks required for the tailings system wastewater monitoring program. Consistent with these requirements, the Director, Regulatory Compliance performed the following evaluations: a field data QA/QC evaluation, a receipt temperature check, a holding time check, an analytical method check, a reporting limit check, a trip blank check, a QA/QC evaluation of sample duplicates, a gross alpha 5 counting error evaluation and a review of each laboratory's reported QA/QC information. Each evaluation is discussed in the following sections. Data check tables indicating the results of each test are provided under Tab E. 4.3.1 Field Data QA/QC Evaluation The Director, Regulatory Compliance performs a review of all field recorded data to assess adherence with QAP, Permit, and Sampling Plan requirements. The assessment involved review of the Field Data sheets. Review of the Field Data Sheets noted that all requirements for field data collection were met. 4.3.2 Holding Time Evaluation QAP Table 1 identifies the method holding times for each suite of parameters. Sample holding time checks are provided under Tab E. All samples were analyzed within the required holding time. It is important to note that pH is analyzed by the laboratory and is not measured in the field because the acidic nature of the samples requires a more robust meter than what is available for field use. In most circumstances pH is measured at the time of sample collection and a holding time is not assessed. If pH is not measured at the time of collection, a 15-minute time limit is set. Pace measured the pH upon receipt. This does not affect the usability of the data, as the sample matrices are stable and pH is collected for informational purposes only and there are no compliance criteria for pH measurements. 4.3.3 Laboratory Receipt Temperature Check Chain of Custody sheets were reviewed to confirm compliance with the Permit. Sample receipt temperature checks are provided under Tab E. All samples were received within the required temperature limit. 4.3.4 Analytical Method Check All analytical methods reported by both laboratories were checked against the required methods specified in Table 1 of the QAP. It is important to note that neither the QAP nor the Permit specify a method for laboratory pH or conductivity. The Director, Regulatory Compliance verified that the laboratory pH and conductivity methods used by the laboratory were appropriate and provided accurate data. GEL used EPA Method 8270E for the analysis of SVOCs during the 2023 sampling event. Table 1 of the QAP does not specify a method for SVOCs because SVOCs are not routinely collected in the Mill groundwater samples. The GWDP requires that tailings and slimes drain samples shall include the SVOCs identified in EPA Method 8270D. The GWDP does not specify that EPA Method 8270D be used for analysis, only that the compounds specified in that method be included in the analytical list. All of the SVOCs in the GWDP-specified list were included in the analytical data. The analytical data are included in Tab C. 6 Analytical method check results are provided in Tab E. 4.3.5 Reporting Limit Evaluation All analytical method reporting limits reported by both laboratories were checked against the reporting limits specified in the Permit. Section I.E.4 of the Permit requires the following Reporting Limits: "all water quality analyses reported shall have a minimum detection limit or reporting limit that is less than or equal to the respective: i. Ground Water Quality Standards ("GWQS") concentrations defined in Table 2 of this Permit, ii. For TDS, Sulfate, and Chloride, the Minimum Detection Limit for those constituents for Cell solution monitoring will be as follows: 1,000 mg/L, 1,000 mg/L, and 1 mg/L, respectively, and iii. Lower limits of quantitation for groundwater for semi-volatile organic compounds listed in Table 2 of EPA Method 8270D, Revision 4, dated February, 2007." Reporting limits are provided in Tab E. There are several constituents that do not have specified reporting limits in either the Permit or EPA Method 8270D. The reporting limits established by the laboratory are reported in the data packages. The reporting limits are comparable to other analytes in the same method based on the same matrix. The reporting limits used by the laboratory are considered acceptable based on the matrix and known difficulties caused by the sample matrix. Certain VOCs and certain SVOCs had reporting limits that exceeded the reporting limits listed in the permit or the method respectively. The VOCs that had reporting limits that exceeded the reporting limits are : • Methylene chloride in Cell 1, Cell 2 Slimes, Cell 4A, Cell 4A LDS, Cell 4B, Cell 4B LDS, Cell 65 -2023 reporting limit = 25 ug/L All samples had methylene chloride RLs above the permit required RL of 5 ug/L. These exceedances were likely the result of dilutions necessary to address the matrix interferences inherent in these samples. The exceedances do not affect the quality or usability of the data because the results of this sampling provide an "inventory" of cell composition and are not used for comparison to regulatory limits. The reporting limits for the SVOCs exceeded the recommended RLs in Method 8270D. GEL provided both a method detection limit ("DL") and RL. The DL is based on the sample composition and other sample-specific variables such as TDS and pH. EPA Method 8270D provides "recommended" quantitation limits for water samples. The tailings solution matrix is not 7 comparable to routine groundwater samples and require dilutions to address these matrix interferences. The laboratory will report detections to the DL and therefore that is the lowest limit for reporting (i.e. the RL ). These RL exceedances were likely the result of dilutions necessary to address the matrix interferences inherent in these samples. The exceedances do not affect the quality or usability of the data because the results of this sampling provide an "inventory" of cell composition and are not used for comparison to regulatory limits. In addition, several sets of sample results had the reporting limit raised for at least one analyte due to sample dilution. In all of these cases, the reported value for the analyte was higher than the increased detection limit. 4.3.6 Trip Blank Evaluation All trip blank results were reviewed to identify any blank contamination. Trip blank evaluations are provided in Tab E. All trip blank results associated with the samples were less than the reporting limit for the VOCs. 4.3. 7 QA/QC Evaluation for Sample Duplicates Section 9.1.4 a) of the QAP states that the relative percent difference (the "RPD") will be calculated for the comparison of duplicate and original field samples. The QAP acceptance limits for RPDs between the duplicate and original field sample is less than or equal to 20% unless the measured results are less than 5 times the required detection limit. This standard is based on the EPA Contract Laboratory Program National Functional Guidelines for Inorganic Data Review, February 1994, 9240.1-05-01 as cited in the QAP. The RPDs are calculated for all duplicate pairs for all analytes regardless of whether or not the reported concentrations are greater than 5 times the required detection limits; however, data will be considered noncompliant only when the results are greater than 5 times the required detection limit and the RPD is greater than 20%. RPDs are also only calculated when both the sample and the duplicate report a detection for any given analyte. If only one of the pair reports a detection the RPD cannot be calculated. The additional duplicate information is provided for information purposes. All duplicate results were within 20% RPD except for Nitrate in the duplicate pair Cell 4A/Cell 65. The Nitrate results were greater than 20% RPD. Per the approved QAP, and in response to requests from DWMRC, a separate corrective action for duplicate RPDs outside of acceptance limits has been developed. The revised procedure for duplicate results outside of acceptance limits was implemented. The corrective actions that were taken in accordance with the revised procedure are as follows: the Director, Regulatory Compliance contacted the Analytical Laboratory and requested a review of the raw data to assure that there were no transcription errors and the data were accurately reported. The laboratory noted that the data were accurate and reported correctly. Reanalysis was not completed as the RPDs above the limit are likely due to interferences caused by the matrix, as discussed below. There is no effect on the usability of the data due to the duplicate results exceeding the comparability criteria because the matrix of the sample solution caused the noncompliance. 8 Results of the RPD test are provided under Tab E. The radiologic duplicates are discussed in Section 4.3.8 below. 4.3.8 Radiologic Counting Error Section 9 .14 of the QAP requires that all gross alpha analysis reported with an activity equal to or greater than the Groundwater Compliance Limit (the "GWCL") (for the tailings system wastewater samples the GWQS will be used), shall have a counting variance that is equal to or less than 20% of the reported activity concentration. An error term may be greater than 20% of the reported activity concentration when the sum of the activity concentration and error term is less than or equal to the GWQS. Results ofroutine radiologic sample QC are provided under Tab E. All tailings system wastewater radiologic sample results met the counting error requirement. Section 9.1.4 of the QAP also requires a comparability check between the sample and field duplicate sample results utilizing the formula provided below: The original and duplicate sample did not meet the duplicate comparability check specified in the QAP for gross alpha. Results of the Duplicates test are provided under Tab E. Per the approved QAP, and in response to requests from DWMRC, a separate corrective action for duplicate RPDs outside of acceptance limits has been developed and is documented in the revised QAP. The revised procedure for duplicate results outside of acceptance limits was implemented for the gross alpha results in duplicate pair Cell 4A/Cell 65 . The corrective actions that were taken in accordance with the revised procedure are as follows: the Director, Regulatory Compliance contacted the Analytical Laboratory and requested a review of the raw data to assure that there were no transcription errors and the data were accurately reported. The laboratory noted that the data were accurate and reported correctly. Reanalysis was not completed as the Duplicate check results are likely due to interferences caused by the matrix as discussed below. The lack of comparability of the gross alpha results is indicative of a matrix interference and does not affect the usability of the data. Matrix interference is most likely caused by high concentrations of TDS and other constituents in the sample. 4.3.9 Laboratory Matrix QC Evaluation Section 9.2 of the QAP requires that the laboratory's QA/QC Manager check the following items in developing data reports: (1) sample preparation information is correct and complete, (2) analysis information is correct and complete, (3) appropriate analytical laboratory procedures are followed, (4) analytical results are correct and complete, (5) QC samples are within established control limits, (6) blanks are within QC limits, (7) special sample preparation and analytical requirements have been met, and (8) documentation is complete. In addition to other laboratory checks described above, EFRI's Director, Regulatory Compliance rechecks QC samples and blanks (items (5) and (6)) to confirm that the percent recovery for spikes and the relative percent 9 difference for spike duplicates are within the method-specific required limits, or that the case narrative sufficiently explains any deviation from these limits. Results of this quantitative check are provided under Tab E. All lab QA/QC results from both Pace and GEL met these requirements. There were QC results which did not meet laboratory established acceptance limits, as identified in Tab E and described below. A significant number of the tailings system wastewater samples had the RL raised for multiple analytes due to matrix interference and/or sample dilution. RL evaluations are discussed in Section 4.3.5. The check samples included at least the following: a method blank, a laboratory control spike ("LCS"), a matrix spike ("MS") and a matrix spike duplicate ("MSD"), or the equivalent, where applicable. All qualifiers, and the corresponding explanations reported in the QA/QC Summary Reports for any of the check samples for any of the analytical methods were reviewed by the Director, Regulatory Compliance. The QAP Section 8.1.2 requires that a MS /MSD pair be analyzed with each analytical batch, depending upon the analytical method requirements and/or method limitations. The QAP does not specify acceptance limits for the MS/MSD pair, and the QAP does not specify that the MS/MSD pair be prepared on EFRI samples only. Acceptance limits for MS/MSDs are set by the laboratories. The review of the information provided by the laboratories in the data packages verified that the QAP requirement to analyze a MS/MSD pair with each analytical batch was met. While the QAP does not require it, the recoveries were reviewed for compliance with the laboratory established acceptance limits. The QAP does not require this level of review, and the results of this review are provided for information only. The information from the Laboratory QA/QC Summary Reports indicates that the MS/MSDs recoveries and the associated RPDs for the samples were within acceptable laboratory limits except as indicated in Tab E. The data recoveries and RPDs which are outside the laboratory established acceptance limits do not affect the quality or usability of the data because the recoveries and RPDs above or below the acceptance limits are indicative of matrix interference most likely caused by other constituents in the samples. Matrix interferences are applicable to the individual sample results only . The requirement in the QAP to analyze a MS/MSD pair with each analytical batch was met and as such the data are compliant with the QAP. The method and analytical batch are considered acceptable because the MS and LCS data were within limits. The QAP specifies that surrogate compounds shall be employed for all organic analyses, but the QAP does not specify acceptance limits for surrogate recoveries. The analytical data associated with the samples met the requirement specified in the QAP. The information from the Laboratory QA/QC Summary Reports indicates that the surrogate recoveries for the samples were within acceptable laboratory limits for the surrogate compounds. The requirement in the QAP to analyze surrogate compounds was met and the data are compliant with the QAP. Furthermore , there are no QAP requirements for surrogate recoveries. The information from the Laboratory QA/QC Summary Reports indicates that the LCS/LCSD recoveries for the samples were within acceptable laboratory limits for all LCS/LCSD compounds. The QAP, Section 8.1.2 requires that each analytical batch shall be accompanied by a method blank. The analytical batches routinely contain a blank, which is a blank sample made and carried through all analytical steps. For the Mill samples, a method blank was prepared for the analytical methods. Per the approved QAP, contamination detected in analysis of method blanks will be used to evaluate any analytical laboratory contamination of environmental samples. The QAP states that non-conformance conditions will exist when contaminant levels in the samples(s) are not an order of magnitude greater than the blank result. The QAP requirement to analyze a method blank with each batch and evaluate the results has been completed as required. There were no detections in the method blanks. Method blank results are included in Tab E. Laboratory duplicates are completed by the analytical laboratories as required by the analytical method specifications. Acceptance limits for laboratory duplicates are set by the laboratories. The QAP does not require the completion of laboratory duplicates or the completion of a QA assessment of them. EFRI reviews the QC data provided by the laboratories for completeness and to assess the overall quality of the data provided. Duplicate results for the samples outside of the laboratory established acceptance limits are included in Tab E. The results outside of the laboratory established acceptance limits do not affect the quality or usability of the data because the RPDs above the acceptance limits are indicative of non-homogeneity in the sample matrix. Matrix affects are applicable to the individual sample results only. 5.0 HISTORIC DATA The historic analytical data for the tailings system wastewater sampling program are included in Tab D. In addition, the average concentrations for Cell 3, compiled in the DWMRC GWDP, Statement of Basis for a Uranium Mining Facility at White Mesa, South of Blanding, Utah, dated December 1, 2004 are included in Tab D. 6.0 SUMMARY AND CONCLUSIONS 6.1 Cell 1 Cell 1 solutions were acidic in nature with a laboratory pH of 1.3. As expected, the solutions contained gross alpha, major ions, VOCs and metals. SVOCs were not detected. The VOCs acetone and chloroform were detected. Regarding major ions, calcium, chloride, magnesium, ammonia, potassium, sodium and sulfate were one or more orders of magnitude greater in concentration than the other major ions. Metals exhibiting the greatest concentration by at least one order of magnitude higher than the other metals analyzed included arsenic, cadmium, chromium, cobalt, copper, iron, lead, manganese, molybdenum, nickel, selenium, thallium, uranium, vanadium and zinc. A decrease was noted in the gross alpha concentration in the August 2023 sample. The variable gross alpha results are being caused by matrix interference due to the nature of the tailings solution and are not representative of gross alpha from radium concentrations in the solution. This is evidenced by the results of the voluntary additional analyses. The results of the voluntary analyses are shown in Tab D. 11 The majority of the concentrations reported in the 2023 sample remained within historic ranges. Sulfate and zinc had reported concentrations outside (below) the historic ranges. The concentrations which fell outside of the historic ranges are due to effects from the local drought, the addition of fresh water to address EPA Subpart W regulations, routine sampling and analytical error, and matrix interferences during the analyses caused by the inherent composition of the fluids. It is important to note that not all constituents present in the tailings fluids will exhibit the same behavior as a result of concentration of the tailings fluids and any increases or decreases in constituent results will not be linear. The individual constituent results are greatly affected by the matrix of the tailings fluids and each constituent will behave differently based on the matrix interactions and the differing solubility properties of the constituent. 6.2 Cell 3 Cell 3 was dry in 2023 and was therefore not sampled. 6.3 Cell 4A Cell 4A solutions were acidic in nature, with a laboratory pH of 2.3. As expected, the solutions contained gross alpha, major ions, and metals. VOCs and SVOCs were not detected. Cell 4A fluid exhibited the highest major ion concentrations for chloride, magnesium, ammonia, potassium, sodium and sulfate. The metals arsenic, cadmium, chromium, cobalt, copper, iron, lead, manganese, molybdenum, nickel, selenium, uranium, vanadium and zinc were one or more orders of magnitude greater than the other metals analyzed. A decrease in the gross alpha concentration sample was noted in the 2023 sample. The variable gross alpha results are being caused by matrix interference due to the nature of the tailings solution and are not representative of gross alpha from radium concentrations in the solution. This is evidenced by the results of the voluntary additional analyses which are shown in Tab D. Overall, the concentrations reported in the 2023 sample remained approximately the same as the 2022 sample. Sulfate, conductivity, arsenic, copper, iron, lead, molybdenum, and vanadium reported concentration slightly below the historic ranges. The concentrations which fell outside of the historic ranges are due to effects from the local drought, routine sampling and analytical error, and matrix interferences during the analyses caused by the inherent composition of the fluids. It is important to note that not all constituents present in the tailings fluids will exhibit the same behavior as a result of concentration of the tailings fluids and the increases in constituent results will not be linear. The individual constituent results are greatly affected by the matrix of the tailings fluids and each constituent will behave differently based on the matrix interactions and the differing solubility properties of the constituent. 6.4 Cell 4B Cell 4B solutions were acidic in nature, with a laboratory pH of 2. As expected, the solutions contained gross alpha, major ions, and metals. VOCs and SVOCs were not detected. The VOCs detected were acetone, chloroform, methyl ethyl ketone (2-butanone) and naphthalene. Cell 4B fluid exhibited the highest major ion concentrations for ammonia. The metals iron, manganese, 12 vanadium and zinc were one or more orders of magnitude greater than the other metals analyzed. A decrease in the gross alpha concentration of the 2023 sample was noted. The variable gross alpha results are being caused by matrix interference due to the nature of the tailings solution and are not representative of gross alpha from radium concentrations in the solution. This is evidenced by the results of the voluntary additional analyses which are shown in Tab D. The concentrations of calcium, chloride, fluoride, magnesium, nitrate, potassium, sodium, sulfate, TDS, conductivity, arsenic, beryllium, cadmium, chromium, cobalt, copper, iron, lead, manganese, molybdenum, nickel, selenium, silver, uranium, vanadium, and zinc reported in the 2023 sample are below previous results due to the addition of the addition of fresh water to address EPA Subpart W regulations. . It is important to note that not all constituents present in the tailings fluids will exhibit the same behavior and any decreases or increases in constituent results will not be linear. The individual constituent results are greatly affected by the matrix of the tailings fluids and each constituent will behave differently based on the matrix interactions and the differing solubility properties of the constituent. 6.5 Cell 2 Slimes Drain Cell 2 Slimes drain fluid was acidic in nature, with a laboratory pH of 2.6. As expected, the solutions contained gross alpha, major ions, metals, and VOCs. SVOCs were not detected. Major ions that were highest in concentration by one or more orders of magnitude included chloride, magnesium, ammonia, sodium and sulfate. For metals, arsenic, cadmium, chromium, cobalt, copper, iron, manganese, molybdenum, nickel, thallium, uranium, vanadium and zinc were at least one order of magnitude greater in concentration than other metals analyzed. A decrease in the gross alpha concentration of the 2023 sample was noted. The gross alpha result remains in the same order of magnitude as the historic data. It is important to note that gross alpha results affected by matrix interference due to the nature of the tailings solution and are not representative of gross alpha from radium concentrations in the solution. This is evidenced by the results of the voluntary additional analyses which are shown in Tab D. Overall, the concentrations reported in the 2023 sample remained approximately the same as the historic ranges with calcium, potassium, sodium beryllium and slightly above the historic ranges and sulfate, pH, selenium and naphthalene slightly below historic ranges. Concentration changes noted are within the analytical accuracy of the methods used for analysis. It is important to note that not all constituents will behave in a linear manner. The individual constituent results are greatly affected by the matrix of the tailings management system and each constituent will behave differently based on the matrix interactions and the differing solubility properties of the constituent. 6.6 Cells 3, 4A and 4B Slimes Drain In accordance with the Permit, the slimes drains for Cell 3, 4A and 4B are not required to be sampled until dewatering operations have begun. Cell 1 was designed to be used solely as an evaporation pond and does not have a slimes drain. 13 6. 7 Cells 1, 2, and 3 Leak Detection Systems Consistent with the Permit, the Cells 1, 2, and 3 LDSs were not sampled during the 2023 sampling event. The Cells 1, 2, and 3 LDSs were dry. 6.8 Cell 4A Leak Detection System Cell 4A LDS solutions were acidic in nature, with a laboratory pH of 2.2. As expected, the solutions contained gross alpha, major ions, metals and one VOC. The VOC that was detected was chloroform. No SVOCs were detected. Cell 4A LDS fluid exhibited the highest major ion concentrations for chloride, magnesium, ammonia, sodium, and sulfate. The metals arsenic, cadmium, chromium, cobalt, copper, iron, manganese, molybdenum, nickel, uranium, vanadium, and zinc were one or more orders of magnitude greater than the other metals analyzed. A decrease in the gross alpha concentration, compared to the 2022 sample was noted. The variable gross alpha results are being caused by matrix interference due to the nature of the tailings solution and are not representative of gross alpha from radium concentrations in the solution. This is evidenced by the results of the voluntary additional analyses which are shown in Tab D. The concentrations reported in the 2023 sample exhibited an overall slight decrease. Magnesium, nitrate, sulfate, TDS, conductivity, arsenic, beryllium, chromium, cobalt, copper, iron, manganese, nickel, selenium, uranium vanadium and zinc reported concentrations below the historic ranges. The concentrations which fall outside of the historic ranges are due to analytical error, and matrix interferences during the analyses caused by the inherent composition of the fluids. 6.9 Cell 4B Leak Detection System Cell 4B LDS solutions were acidic in nature, with a laboratory pH of 1.7. As expected, the solutions contained gross alpha, major ions, VOCs, and metals. The VOCs detected were acetone, chloroform, chloromethane, methyl ethyl ketone (2-butanone) and tetrahydrofuran. No SVOCs were detected. Cell 4B LDS fluid exhibited the highest major ion concentrations for chloride, magnesium, ammonia, sodium, and sulfate. The metals arsenic, cadmium, chromium, cobalt, copper, iron, lead, manganese, molybdenum, nickel, selenium, thallium, uranium, vanadium and zinc were one or more orders of magnitude greater than the other metals analyzed. A decrease in the gross alpha concentration was noted in the 2023 sample. The variable gross alpha results are being caused by matrix interference due to the nature of the tailings solution and are not representative of gross alpha from radium concentrations in the solution. This is evidenced by the results of the voluntary additional analyses which are shown in Tab D. Overall, the concentrations reported in the 2023 sample remained approximately the same as the historic ranges with calcium, nitrate, thallium and chloroform slightly above the historic ranges and fluoride, sulfate, arsenic, iron and selenium slightly below historic ranges .. The concentrations which fall outside of the historic ranges are due to changes in the Cell 4B solutions, routine sampling and analytical error, and matrix interferences during the analyses caused by the inherent composition of the fluids. 14 6.10 Summary and Conclusions of Analytical Results The metals arsenic, cadmium, chromium, cobalt, copper, iron, manganese, molybdenum, nickel, uranium, vanadium and zinc were generally present in greatest concentration for all samples. For major ions, chloride, ammonia, sodium, and sulfate were predominant. Both increases and decreases were noted for several metals and major anions. Concentrations are variable and are driven by Mill operations. EFRJ conducted additional voluntary analyses (not required by the GWDP) in order to further characterize the radiological and physical properties of the tailings solution, as discussed Section 3 .1 above. The results of the additional voluntary analyses for radium-226, thorium-228, thorium-230, thorium-232, uranium-233/234, uranium-235/236, uranium-238, and specific gravity show that the variability in gross alpha results are being caused by matrix interference due to the nature of the tailings solution and are not representative of gross alpha from radium concentrations in the solution. EFRJ may or may not choose to continue these additional analyses in the future. The changes in concentrations of metals and major ions are reflective of Mill operations and are driven by the addition/movement of fluids during periods of operation. The individual constituent results are greatly affected by the matrix of the tailings fluids and each constituent will behave differently based on the matrix interactions and the differing solubility properties of the constituent. Overall, the results of the 2023 tailings solutions are within historic, expected ranges except as noted above. 7.0 CORRECTIVE ACTION REPORT No corrective action reports are required for the 2023 annual sampling event. 7.1 Assessment of Corrective Actions from Previous Period No corrective action reports were required for the 2022 annual sampling event and as such there is no assessment of previous actions necessary. 15 8.0 SIGNATURE AND CERTIFICATION This document was prepared by Energy Fuels Resources (USA) Inc. Energy Fuels Resources (USA) Inc. By: Scott A. Bakken Date Vice President, Regulatory Affairs 16 Certification: I certify , under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is , to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Scott A. Bakken Vice President, Regulatory Affairs Energy Fuels Resources (USA) Inc . 17 TABLES Table 1 Summary of Tailings System Wastewater Monitoring Location Sample Date* Date of Laboratory Report Work Order Number/Lab Set ID Cell 1 Solutions 8/29/2023 GEL-9/28/2023 GEL -635551 PACE -9/26/23 PACE -S2308596 Cell 2 Slimes Drain 8/29/2023 GEL-9/28/2023 GEL-635551 PACE -9/26/23 PACE -S2308596 Cell 3 Solutions Not Sampled -NA NA DRY NA NA Cell 4A Solutions 8/29/2023 GEL-9/28/2023 GEL-635551 PACE -9/26/23 PACE -S2308596 Cell 4A LDS 8/29/2023 GEL-9/28/2023 GEL-635551 PACE -9/26/23 PACE -S2308596 Cell 4B Solutions 8/29/2023 GEL-9/28/2023 GEL-635551 PACE -9/26/23 PACE -S2308596 Cell 4B LDS 8/29/2023 GEL-9/28/2023 GEL-635551 PACE -9/26/23 PACE -S2308596 Cell 65 -Duplicate of 8/29/2023 GEL-9/28/2023 GEL-635551 Cell 4A PACE -9/26/23 PACE -S2308596 Notes: NA= Not sampled or analyzed. There was no liquid present at the time of the sampling event. GEL = GEL Laboratories, LLC PACE= PACE Analytical *EFRI conducted the annual sampling event in August 2023. EFRI collected additional samples aliquots for specific gravity and additional radiological constituents. INDEX OF TABS Tab A Tailings System Monitoring Field Sheets Tab B Sample Location Figures Tab C Laboratory Analytical Reports Tab D Chemical and Radiological Summary Tables Tab E Quality Assurance and Data Validation Tables E-1 Holding Time Evaluation E-2 Laboratory Receipt Temperature Check E-3 Analytical Method Check E-4 Reporting Limit Evaluation E-5 Trip Blank Evaluation E-6 QA/QC Evaluation for Sample Duplicates E-7 Radiologic Counting Error E-8 Laboratory Matrix QC Evaluation Tab A Tailings System Monitoring Field Sheets Field Data Record-Tailings Solutions , LDS and Slimes Drain Sampling Location: _C_e_\_1------'-l _____ Sampling Personnel: :f~m,cr· J.J .. JI; l J , DeCII L~ni,,.,., Is this a Slimes Drain? □ Yes r.{J No If this is a Slimes Drain, measure depth to wastewater immediately before sampling. DTW immediately before sampling (slimes only):~,,...,~J"l~:4 ________ _ Weather Conditions at Time of Sampling:_S"...,,._,_n .... n"'"~...,......------------- Analytical Parameters/Sample Collection Method: voes II Yes □No D Yes fill No D D ~ GEL Metals r!l Yes □No □ Yes Ill No D □ ~ PAll: Nutrients Iii Yes □No D Yes Bl No □ □ [ij PAC.E Other Non ~ Yes □No D Yes Iii No □ □ ~ Radiolo_gics PAc.E Gross Alpha 1$ Yes □No □ Yes SI No D □ Ill lr.,.EL SVOCs f$i Yes □No □ Yes 1$ No □ □ ~ rTE.L Conductivity ~Yes □No □Yes ~No □ □ [ll PAc..f QC Samples Associated with this Location: □ Rinsate Blank □ Duplicate Duplicate Sample Name: &8 Notes: ~f!:rnplt:.s. Field Data Record-Tailin gs Solution s. LDS and Slimes Drain Sampli ng Location: ~\;Me3. :It ~ Sampling Personnel: :::rc.nnc c J.J~IIJ _j , DieCll l-:3..,..A"\ Is this a Slimes Drain? ~ Yes □ No H this is a Slimes Drain, measure depth to wastewater immediately before sampling. DTW immediately before sampling (slimes only):_...,,..,.~'-+-------- Weather Conditions at Time of Sampling:~S~v.~rl-O~~-.-------------- Analytical Parameters/Sample Collection Method: ··Pa ram eter .s.~.f,ipl~_,~Jµ. ; ! :·· • FIiter ed" • '. • •. ~-_ ... ,. •. • .• •1_:: i : ., ... ":' ·.:-~:. -_t·-:· . :·: ,:. • -.. • . "" ."..:. ~·· • ! : . • • • . ; I • ;• •e 1 •.,":,:.,. .; • ' :,··-' ... . ' ,.• . • "II.-_,.,. r:: .... ". ' . , . -· _.,. -· ·: .... .. ~ voes IY,I Yes □No □ Yes !'ii No Metals IJ Yes □No □ Yes 1t1 No Nutrients Bl Yes □No □ Yes ~No Other Non Iii Yes □No D Yes Ill No Radiologies Gross Alpha 1$ Yes □No □ Yes Iii No SVOCs ~ Yes □No □Yes 1$ No Conductivity ~ Yes oNo □Yes 1$1 No QC Samples Associated with this Location: D Rinsate Blank o Duplicate .. ( : --~ . ~. ".S-_,.,. ""lj-·""'"~·M·, !fb ,o/J·. , .. : ... , .. ; -,. · , .. i HQP Il2"L ~e · .. __ ;--;,d. • . -.~ens ta itlc _. ··B ·~"• ~-~ • : .... ··-,La111e-: . · er , .. ;'•:~t < -' -.~ .... '~---•t-:f. • ._,· . .. ·.--~~ i:" ~-:··. . .. . . □ ijl D □ ~ □ □ Ill D D ~ D D ~ D D Ejl □ □ !JI D Duplicate Sample N arn e:._,,__.._,~--------- ---,:'t ,ab · . . . ·::·N~;. . .. ·.: .-,~:'-..... ~:: .· . ' • .. ' GcL PAC.I: PAC.E. ?I\C..E. rT"EL l(TE.L ?AC.f. Notes: Arr j,w~ on ~;fc J: D 85 0 5>tt:mplcs col k ,te d 41':t Q 855 -r .. ""cr ,-..,,! Pru1 p "eseiit t o c:.oll<tc.~ s .. ..,plt.s . Le -Pl-.> :b; "'-t C> CJ a5 Field Data Record-Tailings Solutions, LDS and Slimes Drain Sampling Location: C. e II YA Is this a Slimes Drain? Sampling Personnel: :1c.urnc c 1,1.,Jl;l:J I Dee11 L'j,wi"'" □ Yes ~ No If this is a Slimes Drain, measure depth to wastewater immediately before sampling. DTW immediately before sampling (slimes only):_e,~~~:4~--------- Weather Conditions at Time of Sampling:~·"-X>.JL.U.l.L'.-------------- Analytical Parameters/Sample Collection Method: voes [J Yes □No □Yes Eil No □ D [ii GEL Metals IJj Yes □No □Yes Ill No □ D ijj PAlE Nutrients Ni Yes □No □ Yes ~ No D D I!) ?AC.E. Other Non Iii Yes □No □ Yes 1$1 No □ □ ~ Radiologies P,'\c.E. Gross Alpha 1$ Yes □No □ Yes Iii No D □ ~ fy-EL SVOCs ~ Yes □No D Yes 1$ No D D IJ) '"~L Conductivity ~Yes □No □Yes 1$1 No D D Ill PALE. QC Samples Associated with this Location: □ Rinsate Blank □ Duplicate Duplicate Sample Name: ,-•r,1 r~e~t f r, c.ollc:cJ SAM lt.S. ,. Field Data Record-Tailin gs Solutions LDS and Slimes Drain Sampling Location: C.e..JI LiA LDS Sampling Personnel: :1o.tJ!le C u&11:A 3 '. Oce11 L'!il'Vl""t') Is this a Slimes Drain? □ Yes CJ No If this is a Slimes Drain, measure depth to wastewater immediately before sampling. DTW immediately before sampling (slimes only): ...,.,,......__ ________ _ Weather Conditions at Time of Sampling:_·~-"'t-------------- Analytical Parameters/Sample Collection Method: .Parameter -'.: ; Sam ··1e'-Ta'k~ii : ·-;;· ·, Fiiteted:. .. _ . • : ·:·· .) •.. ' .. ·:-· .. : -.\·.:;~:-' :-': ... _.:<~··_ ' -1 -~ ~-~ • \ ·" ... .. :• : ... .. I •• • : ·;".. ; . .. ·; ,: .. . •· . ' voes IJ Yes □No D Yes E:IINo Metals l!l Yes □No D Yes Ill No Nutrients Ni Yes □No □ Yes ~No Other Non ~ Yes □No D Yes III No Radiologies Gross Alpha ~ Yes □No □ Yes Iii No SVOCs ~ Yes □No □Yes Efl No Conductivity EjJYes □No □Yes l{J No QC Samples Associated with this Location: □ Rinsate Blank l!I Duplicate ..J•·~,,:_-· •• •: •s -···,t>--u··:ru·"'M··· ... th·oo.,_. ·", •• • ~"~ ,., -'·· ... 3-IQ J~,. _e ---• "·_;:. •. -Pens~' lfic , •-ii:ai'1· er· ."· ."\J,al»e • __ "-~-,. ··•, . ' ..... . ,:: -~~~ -~tift: • ••• • ~. r~-•: I • • -~. I , D □ l'il D D ~ □ □ If,! □ □ 111 □ □ Ell □ □ 11:J D D ~ Duplicate Samp]e Name:_C,~e.~ll _C._5 _______ _ ... ··.t ab . .N:,_;:,t .• ~n,te !: • .. ~ GEL PA-l.E PAC.E ?Ac.E. r.,.EL lfrE.L PALE. Field Data Record-Taili ngs Solutions, LDS and Slimes Drain Sampling Location: ~c..=· =el~l _Lf~-----Sampling Personnel: ::(M•,cr· JJ.JI: A_j , Dec.fl L~1'1'1A" Is this a Slimes Drain? □ Yes rp No If this is a Slimes Drain, measure depth to wastewater immediately before sampling. DTW immediately before sampling (slimes only)=~~--------- Weather Conditions at Time of Sampling:~$-v.=O-O-~~------------ Analytical Parameters/Sample Collection Method: yocs !JI Yes □No □ Yes Iii No □ □ (SJ GEL Metals []I Yes □No □ Yes Ill No D D Iii PAlE Nutrients Iii Yes □No □ Yes ~No D D ~ PAC.E Other Non Bl Yes □No □Yes 1$1 No D □ fi1 Radiologies p,qc.E. Gross Alpha l!JYes □No D Yes ~No □ □ Ell r.-EL SVOCs ~ Yes □No o Yes ~No □ □ (jj '"rE.L Conductivity ~Yes □No □Yes l$l No □ □ [,i PAc.E. QC Samples Associated with this Location: o Rinsate Blank □ Duplicate Duplicate Sample Name:.~,v;~:IA::~--------- Notes: Arr ived on s.itc .,J IC> ID 5. e-mplc:'> coU~d·~J q..t IO l S -r_,,cr: ,..,J P«n pr~se11t to c.oll~cJ Sa.rwi pks. Le t+ _s ;h= .... + IOZ 1 Field Data Record-Tailin gs Solutions, LDS and Slimes Drain Sam pling Location: Ge.II ':I B LI» Sampling Personnel: :lo.nne'" I.le. JI: J:_j I DeCfl L'j"''"''" Is this a Slimes Drain? □ Yes Iii No If this is a Slimes Drain, measure depth to wastewater immediately before sampling. DTW immediately before sampling (slimes only):_~.,_,_ _______ _ Weather Conditions at Time of Sampling:~S~v..~n~n~~~------------- Analytical Parameters/Sample Collection Method: voes !JI Yes oNo □Yes ['j]No D □ fl GEL Metals [J Yes □No D Yes Ill No □ □ C)il PAlE Nutrients Iii Yes oNo o Yes Bil No □ □ ~ PAC.E Other Non Bl Yes □No □ Yes l'.GNo □ □ '$ Radiologies PA'-E. Gross Alpha ~ Yes oNo □ Yes &I No □ □ Efl r,.EL SVOCs ~Yes oNo □ Yes l$l No □ □ [1f f..-E.L Conductivity ~Yes □No □Yes ~No D □ fJ PAC.f. QC Samples Associated with this Location: □ Rinsate Blank □ Duplicate Dup1icate Sample Name: t!fA l"~'Set'lt t o c:.ollec.l SAN lt.S. Field Data Record-Tailin gs Solutions, LDS and Slimes Drain Sampling Location: C.ell fz 5 Is this a Slimes Drain? Sampling Personnel: :f'o.n,,er J.lo II: 1-J 1 OeCll L':.\"'"'" □ Yes □ No If this is a Slimes Drain, measure depth to wastewater immediately before sampling. DTW immediately before sampling (slimes only):_.,....,;~1,~;q..._ _______ _ Weather Conditions at Time of Sampling:~S~"'~0-0-5-------------- Analytical Parameters/Sample Collection Method: ·Para.meter ..• sam-··1e ,'.taken· , Filtered ' • -~--. ~ \•J.I.'• ._· , ... , • • j •• -' . ... ~~.. • :' . .. ~ . ' .. ., ' "< ... ,: • •I r .. . " voes !JI Yes □No □Yes Iii No Metals ~ Yes □No □Yes Ill No Nutrients Ell Yes □No □Yes r!3 No Other Non ~ Yes □No □ Yes 1'$1No Radiolocics Gross Alpha 1$1 Yes □No □ Yes Iii No SVOCs ~ Yes □No □ Yes Efl No Conductivity ~Yes oNo □ Yes l{J No QC Samples Associated with this Location: □ Rinsate Blank ~-., • · •• ~ Sain1-p lilit g·. M. eth·o· d · ,,._ · ·· · · • ' • ~. -.. • -2"': ! !},. .r: P~ristaltic ,-Bailer :· .. • Ladle ., '": '"t ~ ; .... ,'.A,>. .. .i-~ I ;J fG,-·~ I "Plinip ., ; 1. " . ' □ □ ~ □ □ 11) D □ ~ □ □ 9 □ □ ~ □ □ ~ D □ ~ till Duplicate Duplicate Sample Name: __ ~C..~e=l~l _'5=------- ·.'':.Lab . .. ·-..,... Name . •,· G-EL PAC.E PAC.E_ PAc.E. r,.EL :rT,= L PALE. Notes: <"c!Se11t t o coll~c.t s .. ,., ks. 5>1':-mplC's. Colle, e ,,.+ ,. TabB Sample Location Figures :! [;J ll: " ., QI ., 0. QI ~ i :, i! -t: &. ~ ,I ~ ~ C f ., E .. QI ., C ., :I • QI .5 ! ~ 0. ., :I ~ i J ! ,: I! :, JI / ui MW-02 • MW -2 ♦ 32 MW-03 • - II II ti ~ 0 - IICALII: 1·. 1,111111' CELL 1 1,11111' MW-17 • MW-27 ♦ CELL 2 33 PIEZ-2 II PIEZ-3 • M ·26 TW4-1cfJTW4•9 0 OTW4-3 OTW4-12 OTW 4•11bTW4-11 OTW4-13 • PIEZ-5 • TW4-~8 OTW4-1 OTW4-4CfW4-14 OTW4•6 'W Energy Fuels Resources (USA) Inc. 10/8/1 White Mesa MIi S11'! Juan Uto h : TJ75, R22E Amual Talllngs System, Cell Solution Sample Locations '11 2-1 15 II "' i.l a: 'i "' " a. "' • i ::, .5!' ... ,: 0 C. ~ II ! "ii ::, i;; ~ ii i "' !! " ::I! g, ~ "ii ~ g_ II 2 ~ Si] I! u I ~ :::J / ~ ::, t CELL 1 LEAK DETECTION SAMPLE MW-27 ♦ PIEZ-2 • MILL SITE PIEZ-3 • LOCATION i==a-=-="'-=~----..,....+-------1-----MW' ~er====~-l-_'.:=~~~r:::_~~~~:;;::;;:;;;:===== '-21 MW-02 • -. • . • M -26 TW4-1 <fl1W4•9 O OTW4-3 OTW4-12 CELL 2 32 CELL 4B MW-03 • 500' , • • , • CE . ~ . . . • I • .. . . . l,QOO' MW-17 • CELL 3 OTW4-40TW4-14 OTW4•6 PIEZ-4 33 u PIEZ-5 • ... Energy Fuels Resources (USA) Inc. White Mesa IWII San Juan ; utah T37S, R22E Annual Tellings System Slimes and Leak Detection Sample Locations AllnDr. ---Ill: 11/24/15 TabC Laboratory Analytical Reports ~eAna/yfj,,a/-P_a_c_e _A_n_a_ly_tica_l ---------------------------- 1 _,/aCi 1673 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-001 Client Sample ID: Cell 1 Analyses General Parameters pH Electrical Conductivity Total Dissolved Solids (180) Alkalinity, Total (As CaCO3) Nitrogen , Ammonia (as N) Anions Alkalinity , Bicarbonate as HCO3 Alkalinity , Carbonate as CO3 Chloride Sample Analysis Report Result 1.3 76100 112000 ND 4060 RL 0.1 5 10 5 0.1 5 5 258 Qual D Date Reported: 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 8:35:00 AM Date Received: 8/31/2023 10:44:00 AM Sampler: Matrix: Water COC: Units Date Analyzed/lnit Method s.u. 09/02/2023 12:45 AB SM 4500 H µmhos/cm 09/02/2023 12:45 AB SM 2510B mg/L 09/04/2023 10:08 SKR SM 2540 mg/L 09/02/2023 12 :45 AB SM 2320B mg/L 09/15/2023 11 :01 AMB EPA 350 .1 mg/L 09/02/2023 12 :45 AB SM 2320B mg/L 09/02/2023 12 :45 AB SM 2320B mg/L 09/11/2023 22 :35 AB EPA 300 .0 B Fluoride ND ND 13100 1.8 94.9 58900 0.1 mg/L 09/05/2023 18 :58 AB SM 4500FC Nitrogen, Nitrate-Nitrite (as N) Sulfate Cations Calcium Magnesium Potass ium Sodium Cation/Anion-Milliequivalents Bicarbonate as HCO3 Carbonate as CO3 Chloride Fluoride Nitrate + Nitrite as N Sulfate Calcium Magnesium Potassium Sodium Cation/ Anion Balance Cation Sum An ion Sum Cation-Anion Balance These results apply only to the samples tested. 341 4440 1470 17700 ND ND 369.49 0.09 6.77 1227.22 17.00 365.57 37 .57 771 .67 1481 .62 1603.58 3.95 0.1 724 2 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 D mg/L mg/L mg/L mg/L mg/L mg/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L % 09/08/2023 15 :27 JMS EPA 353.2 09/11/2023 22:35 AB EPA 300 .0 09/06/2023 12 :42 DG EPA 200 .7 09/06/2023 12 :42 DG EPA 200 .7 09/06/2023 12 :42 DG EPA 200.7 09/06/2023 12 :42 DG EPA200 .7 09/18/2023 14 :47 JKG SM 1030E 09/18/2023 14 :47 JKG SM 1030E 09/18/2023 14:47 JKG SM 1030E 09/18/2023 14:47 JKG SM 1030E 09/18/2023 14 :47 JKG SM 1030E 09/18/2023 14 :47 JKG SM 1030E 09/18/202314 :47 JKG SM 1030E 09/18/2023 14 :47 JKG SM 1030E 09/18/2023 14 :47 JKG SM 1030E 09/18/2023 14 :47 JKG SM 1030E 09/18/2023 14:47 JKG SM 1030E 09/18/2023 14:47 JKG SM 1030E 09/18/2023 14:47 JKG SM 1030E Page 1 of 14 ?]eAnalyticaf'-P_a_ce_A_na_lyt_i_ca_l _________________________ _ (/aCi 1673 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-001 Client Sample ID: Cell 1 Analyses Dissolved Metals Antimony Arsenic Beryllium Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc These results apply only to the samples tested. Sample Analysis Report Result RL Qual 0.08 0.05 110 0.01 0.788 0.002 4.03 0.002 6.49 0.01 20.6 0.007 640 0.005 1710 0.05 11.8 0.1 248 0.02 0.007 0.001 87.9 0.01 22.9 0.01 2.7 0.1 0.38 0.05 1.88 0.05 0.05 0.02 118 0.1 665 0.005 221 0.02 Date Reported : 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 8:35:00 AM Date Received: 8/31/2023 10:44:00 AM Sampler: Matrix: Water COC: Units Date Analyzed/lnit Method mg/L 09/06/2023 12:42 DG EPA 200 .7 mg/L 09/06/2023 12:42 DG EPA 200.7 mg/L 09/06/2023 12:42 DG EPA 200 .7 mg/L 09/06/2023 12 :42 DG EPA 200 .7 mg/L 09106/2023 12:42 DG EPA 200 .7 mg/L 09/06/2023 12 :42 DG EPA 200 .7 mg/L 09/06/2023 12 :42 DG EPA200.7 mg/L 09/06/2023 12 :42 DG EPA 200 .7 mg/L 09/06/2023 12:42 DG EPA 200 .7 mg/L 09/06/2023 12:42 DG EPA 200 .7 mg/L 09/06/2023 15:00 JGU EPA 245.1 mg/L 09/06/2023 12:42 DG EPA200.7 mg/L 09/06/2023 12:42 DG EPA 200.7 mg/L 09/06/2023 12:42 DG EPA 200.7 mg/L 09/06/2023 12 :42 DG EPA 200 .7 mg/L 09/06/2023 12 :42 DG EPA 200.7 mg/L 09/06/2023 12 :42 DG EPA 200 .7 mg/L 09/06/2023 12:42 DG EPA 200 .7 mg/L 09/06/2023 12:42 DG EPA 200 .7 mg/L 09/06/2023 12:42 DG EPA 200 .7 Page 2 of 14 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date: September 18, 2023 Contact: Project: Tailings Characterization Client Sample ID : Cell I 635551001 Water Sample ID: Matrix: Collect Date: Receive Date: Collector: Parameter Qualifier Res ult Volatile Organics SW846 8260 Volatiles "As Received" 2-Butanone u Acetone u Benzene u Carbon tetrachloride u Chloroform u Chloromethane u Methylene chloride u Naphthalene u Tetrahydrofuran u Toluene u Xylenes (total) u Surrogate/Tracer recovery Bromofluorobenzene Toluene-d8 l ,2-Dichloroethane-d4 ND ND ND ND ND ND ND ND ND ND ND 29-AUG-23 08:35 31-AUG-23 Client DL 8.34 8.72 1.67 1.67 1.67 1.67 2.50 1.67 8.34 1.67 5.00 Result Nominal 231 ug/L 231 ug/L 264 ug/L 50.0 50.0 50.0 Proiect: DNMI00107 Client ID: DNMIO0l RL nits PF DF Anal yst Date Time Batch Method 25.0 ug/L 5 PXYl 09/05/23 1433 2487341 25.0 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 25.0 ug/L 5 5.00 ug/L 5 25.0 ug/L 5 5.00 ug/L 5 15.0 ug/L 5 Recovery% Acceptable Limits Date Time: 09/05/23 14 33 93 (74%-123%) 93 (77%-121%) 106 (76%-127%) Tentatively Identified Compound (TIC) CAS No. No Tentatively Identified Compounds Found RT Est. Concentration Fit Qua/ Date Time: 09/05/23 14 33 The followin Anal tical Methods were erformed Method Description Analyst Comments SW846 8260D SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 19 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Report Date : September 27 , 2023 Contact : Ms . Kathy Weinel Project: Tailings Characterization Client Sample ID : Cell 1 Proiect: DNMI00107 Sample ID : 635551001 Client ID: DNMIOOl Matrix: Water Collect Date: 29-AUG-23 08 :35 Receive Date: 31-AUG-23 Collector: Client Parameter ualifier Result DL RL Units PF OF Ana l st Date Time Batch Method Semi-Volatile-GC/MS SW846 35/0C/8270£ SVOA (Separatory Funnel) "As Received" 1,2,4-Trichlorobenzene u ND 30.0 100 ug/L 0.0100 LL2 09 /06 /23 0055 2486107 1,2-Dichlorobenzene u ND 30 .0 100 ug/L 0.0100 1,2-Diphenylhydrazine u ND 30.0 100 ug/L 0.0100 1,3-Dichlorobenzene u ND 30.0 100 ug/L 0.0100 1,4-Dichlorobenzene u ND 30.0 100 ug/L 0.0100 1-Methylnaphthalene u ND 3.00 10.0 ug/L 0 .0100 2,4,5-Trichlorophenol u ND 30 .0 100 ug/L 0.0100 2,4,6-Trichlorophenol u ND 30 .0 100 ug/L 0.0100 2,4-Dichlorophenol u ND 30.0 100 ug/L 0.0100 2,4-Dimethylphenol u ND 30 .0 100 ug/L 0.0100 2,4-Dinitrophenol u ND 50 .0 200 ug/L 0.0100 2,4-Dinitrotoluene u ND 30.0 100 ug/L 0.0100 2,6-Dinitrotoluene u ND 30.0 100 ug/L 0.0100 2-Chloronaphthalene u ND 4.10 10.0 ug/L 0.0100 2-Chlorophenol u ND 30.0 100 ug/L 0.0100 2-Methyl-4,6-u ND 30.0 100 ug/L 0.0100 dinitrophenol 2-Methylnaphthalene u ND 3.00 10.0 ug/L 0.0100 2-Nitrophenol u ND 30 .0 100 ug/L 0.0100 3 ,3 '-Dimethylbenzidine u ND 33 .0 100 ug/L 0.0100 4-u ND 30 .0 100 ug/L 0.0100 Bromophenylphenylethe r 4-Chloro-3-u ND 30.0 100 ug/L 0.0100 methyl phenol 4-u ND 30.0 100 ug/L 0.0100 Chlorophenylphenylethe r 4-Nitrophenol u ND 30 .0 100 ug/L 0.0100 Acenaphthene u ND 3.00 10.0 ug/L 0.0100 Acenaphthylene u ND 3.00 10 .0 ug/L 0.0100 Anthracene u ND 3.00 10.0 ug/L 0.0100 Benzi dine u ND 39 .0 100 ug/L 0.0100 Benzo( a )anthracene u ND 3.00 10.0 ug/L 0.0100 0.0100 Page 36 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc . Address: 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Report Date: September 27, 2023 Contact: Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID : Cell 1 Proiect: DNMI00107 Sample ID: 635551001 Client ID: DNMIOOl Parameler Qualifier Result DL RL Units PF DF Anal~·sl Dat e T ime Batch Method Semi-Volatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" Benzo( a )pyrene u ND 3.00 JO.O ug/L Benzo(b )fluoranthene u ND 3.00 JO.O ug/L 0.0100 Benzo(ghi)perylene u ND 3.00 JO.O ug/L 0.0100 Benzo(k)fluoranthene u ND 3.00 JO.O ug/L O.OJOO Butylbenzylphthalate u ND 3.00 JO.O ug/L 0.0100 Chrysene u ND 3.00 10.0 ug/L 0.0100 Di-n-butylphthalate u ND 3.00 10.0 ug/L 0.0100 Di-n-octylphthalate u ND 3.00 JO.O ug/L O.OJOO Dibenzo(a,h)anthracene u ND 3.00 10.0 ug/L 0.0100 Diethylphthalate u ND 3.00 10.0 ug/L 0.0100 Dimethylphthalate u ND 3.00 10.0 ug/L 0.0100 Diphenylamine u ND 30.0 JOO ug/L O.OJOO Fluoranthene u ND 3.00 10.0 ug/L O.OJOO Fluorene u ND 3.00 10.0 ug/L O.OJOO Hexachlorobenzene u ND 30.0 100 ug/L O.OJOO Hexachlorobutadiene u ND 30.0 100 ug/L 0.0100 Hexachlorocyclopentadi u ND 30.0 100 ug/L O.OJOO ene Hexachloroethane u ND 30.0 100 ug/L 0.0100 Indeno(l ,2,3-cd)pyrene u ND 3.00 10.0 ug/L 0.0100 Isophorone u ND 35.0 JOO ug/L 0.0100 N-Methyl-N-u ND 30.0 100 ug/L 0.0100 nitrosomethylamine N-u ND 30.0 100 ug/L 0.0100 N itrosodipropylamine Naphthalene u ND 3.00 10.0 ug/L 0.0100 Nitro benzene u ND 30.0 JOO ug/L 0.0100 Pentachlorophenol u ND 30.0 100 ug/L 0.0100 Phenanthrene u ND 3.00 10.0 ug/L 0.0100 Phenol u ND 30.0 JOO ug/L O.OJOO Pyrene u ND 3.00 JO.O ug/L O.OJOO Pyridine u ND 30.0 100 ug/L O.OJOO bis(2-Chloro-1-u ND 30.0 100 ug/L 0.0100 methylethyl)ether bis(2-u ND 30.0 JOO ug/L O.OJOO Chloroethoxy )methane bis(2-Chloroethyl) ether u ND 30.0 100 ug/L 0.0100 bis(2-u ND 3.00 JO.O ug/L 0.0100 Ethylhexyl)phthalate Page 37 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date : September 27 , 2023 Contact: Project: Tailings Characterization Client Sample ID : Sample ID: Cell 1 635551001 Proiect: DNMI00107 Client ID: DNMIO0l Parameter Qualifier Resuli DL RL Units PF OF Analvst Date Time Batch Method Semi-Volatile-GC/MS SW846351 0C/8270£ SVOA (Separatory Funnel) "As Received" m,p-Cresols U ND 37 .0 o-Cresol U ND 30 .0 Surrogatellracer recovery Result Nominal Phenol-d5 290 ug/L 1000 Nitrobenzene-d5 315 ug/L 500 2-Fluorobiphenyl 336 ug/L 500 p-Terphenyl-dl 4 364 ug/L 500 2-Fluorophenol 380 ug/L 1000 2,4,6-Tribromophenol 839 ug/L 1000 Tentatively Identified Compound (TIC) CASNo. RT unknown 4.341 unknown 16.756 The followin Pre Methods were erformed Method Description SW846 3510C SW846 3510C Prep Semivolatiles 8270 The following Analytical Methods were performed Method Description SW846 3510C/8270E 100 100 ug/L 0.0100 ug/L 0.0100 Recovery% Acceptable Limits 29 (15%-85%) 63 (39%-112%) 67 (39%-112%) 73 (24%-129%) 38 (11 %-79%) 84 (37%-132%) Est. Concentration Fit 70 .3 ug/L so 65 .3 ug/L 45 Analyst Date DG3 09/05/23 Qua/ J J Time 1147 Analyst Comments Date Time: 09/06/23 00 55 Date Time: 09/06/23 00 55 Prep Batch 2486099 SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows : DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 38 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Energy Fuels Resources (USA), Inc . 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID : Sample ID: Matrix: Collect Date: Receive Date: Collector: Cell I 635551001 Water 29-AUG-23 08:35 31-AUG-23 Client Parameter Qualifier Result Uncertainty High Rad Testing Alphaspec Th, Liquid "As Received" Thorium-228 129 +/-15.3 Thorium-230 68100 +/-341 Thorium-232 359 +/-24.8 GFPC,Total Alpha Radium, Liquid "As Received" Gross Radium Alpha 10100 +/-114 Lucas Cell, Ra226, liquid "As Received" Radium-226 86.3 +/-1.85 U-233/234,U-235/236 and U-238 "As Received" Uranium-233/234 30600 +/-713 Uranium-235/236 2110 +/-209 Uranium-238 32900 +/-738 The following Prep Methods were performed: Method Description GL-RAD-A-026 Laboratory Composite The following Analytical Methods were performed: Method Description DOE EML HASL-300, Th-01-RC Modified 2 EPA 903.0 3 4 EPA 903 .1 Modified DOE EML HASL-300, U-02-RC Modified Surrogate/Tracer Recovery Test Alphaspec Th, Liquid "As Received" MDC 11.5 10.9 8.43 7.06 0.485 89 .8 86.1 49.7 Thorium-229 Tracer Barium Carrier Uranium-232 Tracer GFPC,Total Alpha Radium, Liquid "As Received" U-233/234,U-235/236 and U-238 "As Received" Notes: RL 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Analyst Counting Uncertainty is calculated at the 68% confidence level (I-sigma). Project: Client ID: Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L Date Result vs 1 09/22/23 0754 2496263 HXB2 09/18/23 1613 2488333 2 LXPl 09/24/23 0852 2488334 3 VS 1 09/25/23 0928 2496264 4 Time Prep Batch 2486541 Analyst Comments Nominal Recovery% 43.7 112 52.9 Acceptable Limits (15%-125%) (25%-125%) (15%-125%) SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Page 90 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Contact: Project: Client Sample ID: Sample ID: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Ms. Kathy W einel Tailings Characterization Cell I 635551001 Parameter Qualifier Result Uncertainty MDC Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit RL MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit Page 91 of 106 SDG: 635551 Project: Client ID : Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Energy Fuels Resources (USA), Inc . 225 Union Boulevard Parameter Contact: Project: Client Sample ID: Sample ID: Matrix: Collect Date: Receive Date: Collector: Suite 600 Lakewood, Colorado 80228 Ms . Kathy Weinel Tailings Characterization Cell 1 635551001 Water 29-AUG-23 08:35 31-AUG-23 Client Qualifier Result Hazardous Waste ASTM D 5057 Specific Gravity "As Received" Specific Gravity 1.14 The following Analytical Methods were performed: Method Description ASTMD5057 Notes: DL 0.0100 RL 0.100 Project: Client ID : Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method none I ES2 09/05/23 0844 2487026 Analyst Comments SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Column headers are defined as follows : DF: Dilution Factor Le/LC: Critical Level DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 76 of 106 SDG: 635551 ~eAn&yfjca/'-P_a_c_e _A_n_al_yt_i~_I __________________________ _ I _)4aci 1673 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-002 Client Sample ID: Slimers #2 Analyses General Parameters pH Electrical Conductivity Total Dissolved Solids (180) Alkalinity, Total (As CaC03) Nitrogen, Ammonia (as N) Anions Alkalinity , Bicarbonate as HC03 Alkalinity , Carbonate as C03 Chloride Fluoride Nitrogen, Nitrate-Nitrite (as N) Sulfate Cations Calcium Magnesium Potassium Sodium Catlon/Anion-Milliequivalents Bicarbonate as HC03 Carbonate as C03 Chloride Fluoride Nitrate + Nitrite as N Sulfate Calcium Magnesium Potassium Sodium Cation/ Anion Balance Catio n Sum Anion Sum Cation-Anion Balance These results apply only to the samples tested. Sample Analysis Report Result 2.6 48400 87000 ND 4440 ND ND 3770 0.1 41.5 52200 625 3920 799 5780 ND ND 106.24 ND 2.96 1086.32 31.17 322.73 20 .43 251.35 942.54 1195.54 11.83 RL 0.1 5 10 5 0.1 5 5 258 0.1 0.1 724 2 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0 .01 0.01 0.01 0.01 0.01 Qual D D Date Reported: 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 8:55:00 AM Date Received: 8/31/2023 10:44:00 AM Sampler: Matrix: Water COC: Units Date Analyzed/lnit Method s.u. 09/02/2023 12 :50 AB SM 4500 H B µmhos/cm 09/02/2023 12:50 AB SM 2510B mg/L 09/04/2023 1 O: 11 SKR SM 2540 mg/L 09/02/2023 12 :50 AB SM 2320B mg/L 09/15/2023 11 :26 AMB EPA 350 .1 mg/L 09/02/202 3 12:50 AB SM 2320B mg/L 09/02/2023 12 :50 AB SM 2320B mg/L 09/11/2023 22 :43 AB EPA 300 .0 mg/L 09/05/2023 19 :02 AB SM 4500FC mg/L 09/08/2023 15 :28 JMS EPA 353 .2 mg/L 09/11/2023 22:43 AB EPA 300 .0 mg/L 09/15/2023 17 :47 DG EPA 200 .7 mg/L 09/06/2023 12:46 DG EPA 200 .7 mg/L 09/06/2023 12 :46 DG EPA 200.7 mg/L 09/15/2023 17 :47 DG EPA 200 .7 meq/L 09/18/2023 14:47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14:47 JKG SM 1030E meq/L 09/18/2023 14:47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14:47 JKG SM 1030E meq/L 09/18/2023 14:47 JKG SM 1030E % 09/18/2023 14:47 JKG SM 1030E Page 3 of 14 A fri,t' 1• Pace Analytical e na,.1ca ------------------------------- 1673 Terra Avenue Sheridan, WY 82801 ph: (307) 672-8945 f Sample Analysis Report CLIENT: Energy Fuels (White Mesa) Date Reported: 9/26/2023 6425 S. Highway 191 Report ID: S2308596002 Blanding, UT 84511 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 8:55:00 AM Project: Date Received: 8/31/2023 10:44:00 AM Lab ID: S2308596-002 Sampler: Client Sample ID: Slimers #2 Matrix: Water COC: Analyses Result RL Qual Units Date Analyzed/lnit Method Dissolved Metals Antimony 0.12 0.05 mg/L 09/06/2023 12:46 DG EPA 200.7 Arsenic 22.2 0.01 mg/L 09/06/2023 12:46 DG EPA 200.7 Beryllium 0.395 0.002 mg/L 09/06/2023 12:46 DG EPA 200.7 Cadmium 7.56 0.002 mg/L 09/06/2023 12:46 DG EPA 200.7 Chromium 2.59 0.01 mg/L 09/06/2023 12:46 DG EPA 200.7 Cobalt 51.6 0.007 mg/L 09/06/2023 12:46 DG EPA 200.7 Copper 104 0.005 mg/L 09/06/2023 12:46 DG EPA 200.7 Iron 2930 0.05 mg/L 09/06/2023 12:46 DG EPA 200.7 Lead 0.4 0.1 mg/L 09/06/2023 12:46 DG EPA 200.7 Manganese 137 0.02 mg/L 09/06/2023 12:46 DG EPA 200.7 Mercury ND 0.001 mg/L 09/06/2023 15:12 JGU EPA 245.1 Molybdenum 4.54 0.01 mg/L 09/06/2023 12:46 DG EPA 200.7 Nickel 139 0.01 mg/L 09/06/2023 12:46 DG EPA 200.7 Selenium 0.3 0.1 mg/L 09/06/2023 12:46 DG EPA 200.7 Silver ND 0.05 mg/L 09/06/2023 12:46 DG EPA 200.7 Thallium 1.82 0.05 mg/L 09/06/2023 12:46 DG EPA 200.7 Tin ND 0.02 mg/L 09/06/2023 12:46 DG EPA 200.7 Uranium 24.8 0.1 mg/L 09/06/2023 12:46 DG EPA 200.7 Vanadium 438 0.005 mg/L 09/06/2023 12:46 DG EPA 200.7 Zinc 828 0.02 mg/L 09/06/2023 12:46 DG EPA 200.7 These results apply only to the samples tested. Page 4 of 14 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date : September 18 , 2023 Contact: Project: Tailings Characterization Client Sample ID : Slime #2 635551002 Water Sample ID: Matrix: Collect Date : Receive Date : Collector: Parameter Qua lifi er Result Volatile Organics SW846 82 60 Volatiles "As Received" 2-Butanone Acetone Benzene u Carbon tetrachloride u Chloroform Chlorornethane u Methylene chloride u Naphthalene Tetrahydrofuran u Toluene u Xylenes (total) u Surrogate/Tracer recovery Toluene-d8 Brornofluorobenzene l ,2-Dichloroethane-d4 70.2 395 ND ND 14 .3 ND ND 5.50 ND ND ND 29-AUG-23 08:55 31-AUG-23 Client DL Result 232 ug/L 242 ug/L 260 ug/L 8.34 8.72 1.67 1.67 1.67 1.67 2.50 1.67 8.34 1.67 5.00 Nominal 50.0 50.0 50.0 Proiect: DNMI00107 Client ID: DNMIO0l RL nit PF OF Analv st Date Time Batch Method 25 .0 ug/L 5 PXYl 09/05/23 1501 2487341 25 .0 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 25 .0 ug/L 5 5.00 ug/L 5 25 .0 ug/L 5 5.00 ug/L 5 15 .0 ug/L 5 Recovery% Acceptable Limits Date Time: 09105/23 15 OJ 93 (77%-121%) 97 (74%-123%) 104 (76%-127%) Tentatively Identified Compound (TIC) CAS No. No Tentatively Identified Compounds Found RT Est Concentration Fit Qua/ Date Time: 09105/23 15 OJ The followin Anal tical Methods were erformed Method Description Analyst Comments SW846 82600 SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND , the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows : DF: Dilution Factor DL: Detection Limit MDA : Minimum Detectable Activity MDC : Minimum Detectable Concentration Le/LC: Critical Level PF : Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 20 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Contact: Project: Lakewood, Colorado 80228 Ms. Kathy Weinel Tailings Characterization Client Sample ID: Sample ID: Matrix: Slime #2 635551002 Water Collect Date : Receive Date: 29-AUG-23 08:55 31-AUG-23 Collector: Client Parame te r Q ualifi er Result DL Semi-Volatile-GC/MS SW846 35/0C/8270£ SVOA (Separatory Funnel) "As Received" l ,2,4-Trichlorobenzene u ND 30.0 1,2-Dichlorobenzene u ND 30.0 1,2-Diphenylhydrazine u ND 30.0 1,3-Dichlorobenzene u ND 30.0 1,4-Dichlorobenzene u ND 30.0 1-Methylnaphthalene u ND 3 .00 2,4,5-Trichlorophenol u ND 30.0 2,4,6-Trichlorophenol u ND 30.0 2,4-Dichlorophenol u ND 30.0 2,4-Dimethylphenol u ND 30.0 2,4-Dinitrophenol u ND 50.0 2,4-Dinitrotoluene u ND 30.0 2,6-Dinitrotoluene u ND 30.0 2-Chloronaphthalene u ND 4.10 2-Chlorophenol u ND 30.0 2-Methyl-4,6-u ND 30.0 dinitrophenol 2-Methylnaphthalene u ND 3 .00 2-Nitrophenol u ND 30.0 3,3'-Dimethylbenzidine u ND 33.0 4-u ND 30.0 Bromophenylphenylethe r 4-Chloro-3-u ND 30 .0 methyl phenol 4-u ND 30.0 Chlorophenylphenylethe r 4-Nitrophenol u ND 30.0 Acenaphthene u ND 3.00 Acenaphthylene u ND 3.00 Anthracene u ND 3.00 Benzi dine u ND 39.0 Benzo( a )anthracene u ND 3.00 Page 39 of 106 SDG: 635551 Report Date: September 27, 2023 Proiect: DNMI00107 Client ID: DNMIO0l RL Un its PF DF Ana lyst Date Time Batch Method 100 ug/L 0.0100 LL2 09/06/23 0117 2486107 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 200 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 10.0 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 0.0100 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Report Date: September 27 , 2023 Contact: Ms . Kathy Weinel Project: Tailings Characterization Client Sample ID : Slime #2 Sample ID: 635551002 Proiect: DNMI00107 Client ID: DNMIO0l Parameter O ualili er Result DL RL nits PF OF Analyst Date Time Batch Method Semi-Volatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" Benzo(a)pyrene u ND 3.00 10 .0 ug/L Benzo(b )fluoranthene u ND 3.00 10 .0 ug/L 0.0100 Benzo(ghi)perylene u ND 3.00 10 .0 ug/L 0.0100 Benzo(k)fluoranthene u ND 3.00 10 .0 ug/L 0.0100 Butylbenzylphthalate u ND 3.00 10 .0 ug/L 0.0100 Chrysene u ND 3.00 10.0 ug/L 0.0100 Di-n-butylphthalate u ND 3.00 10 .0 ug/L 0.0100 Di-n-octylphthalate u ND 3.00 10.0 ug/L 0.0100 Dibenzo( a,h)anthracene u ND 3.00 10 .0 ug/L 0.0100 Diethy lphthalate u ND 3.00 10.0 ug/L 0.0100 Dimethylphthalate u ND 3.00 10 .0 ug/L 0.0100 Diphenylamine u ND 30 .0 100 ug/L 0.0100 Fluoranthene u ND 3.00 10.0 ug/L 0.0100 Fluorene u ND 3.00 10 .0 ug/L 0.0100 Hexachlorobenzene u ND 30 .0 100 ug/L 0.0100 Hexachlorobutadiene u ND 30.0 100 ug/L 0.0100 Hexachlorocyclopentadi u ND 30.0 100 ug/L 0.0100 ene Hexachloroethane u ND 30.0 100 ug/L 0.0100 Indeno( 1,2,3-cd)pyrene u ND 3.00 10 .0 ug/L 0.0100 Isophorone u ND 35.0 JOO ug/L 0.0100 N-Methyl -N-u ND 30.0 100 ug/L 0.0100 nitrosomethylamine N-u ND 30.0 100 ug/L 0.0100 Nitrosodipropylamine Naphthalene u ND 3.00 10 .0 ug/L 0.0100 Nitro benzene u ND 30.0 100 ug/L 0.0100 Pentachlorophenol u ND 30.0 JOO ug/L 0.0100 Phenanthrene u ND 3.00 10 .0 ug/L 0.0100 Phenol u ND 30.0 100 ug/L 0.0100 Pyrene u ND 3.00 10.0 ug/L 0.0100 Pyridine u ND 30.0 100 ug/L 0.0100 bis(2-Chloro-l-u ND 30.0 100 ug/L 0.0100 methylethyl)ether bis(2-u ND 30 .0 100 ug/L 0.0100 Chloroethoxy)methane bis(2-Chloroethyl) ether u ND 30 .0 100 ug/L 0.0100 bis(2-u ND 3.00 10 .0 ug/L 0.0100 Ethylhexyl)phthalate Page 40 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date : September 27 , 2023 Contact: Project: Tailings Characterization Client Sample ID: Sample ID: Slime #2 635551002 Proiect: DNMI00107 Client ID : DNMIO0l Parameter ualifier Resu lt DL RL nits PF Date Time Batch Method Semi-Volatile-GC/MS SW846 3510C/82 70E SVOA (Separatory Funnel) "As Received" m,p-Cresols U ND 37 .0 100 100 ug/L 0.0100 ug/L 0.0100 o-Cresol U ND 30 .0 Surrogate/Tracer recovery Phenol-d5 Nitrobenzene-d5 2-Fluorobiphenyl 2-Fluorophenol p-Terphenyl-dl 4 2,4,6-Tribromophenol Result 291 ug/L 339 ug/L 348 ug/L 366 ug/L 409 ug/L 878 ug/L Tentatively Identified Compound (TIC) CAS No. unknown Heptanoic acid unknown unknown 1,4-Benzenediamine, N,N-diethyl- unknown unknown 000111-14-8 000093-05-0 The followin Methods were erformed Method Description Nominal Recovery% Acceptable Limits (15%-85%) (39%-112%) (39%-112%) (11%-79%) (24%-129%) (37%-132%) 1000 29 500 68 500 70 1000 37 500 82 1000 88 RT Est. Concentration Fit 3.812 70 .7 ug/L 64 4.496 91.4ug/L 90 4 .855 72.3 ug/L 74 5.272 43 .9ug/L 72 7.ll2 710ug/L 98 7.449 63 .7ug/L 38 8.85 42 .1 ug/L 64 Analyst Date SW846 35I0C SW846 3510C Prep Semivolatiles 8270 DG3 09/05 /23 The following Analytical Methods were performed Qua/ J NJ J J NJ J J Time ll47 Method Description Analyst Comments SW846 3510C/8270E Date Time: 09/06/23 OJ 17 Date Time: 09/06/23 OJ 17 Prep Batch 2486099 SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Page 41 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID: Sample ID: Parameter Qualifier Result Column headers are defined as follows : DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Slime#2 635551002 DL RL Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 42 of 106 SDG: 635551 Report Date: September 27, 2023 Proiect: DNMI00107 Client ID: DNMIO0l Unit s PF DF nalyst Date Time Batch 1ethod GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Energy Fuels Resources (USA), Inc . 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms . Kathy Weinel Project: Tailings Characterization Client Sample ID : Sample ID: Matrix: Collect Date: Receive Date: Collector: Slimes #2 635551002 Water 29-AUG-23 08:55 31-AUG-23 Client Parameter Qualifier Result Uncertainty High Rad Testing Alphaspec Th, Liquid "As Received" Thorium-228 11.9 +/-2.01 Thorium-230 1940 +/-22.9 Thorium-232 u 2.13 +/-1.01 GFPC,Total Alpha Radium, Liquid "As Received" Gross Radium Alpha 1760 +/-49.7 Lucas Cell, Ra226, liquid "As Received" Radium-226 76.8 +/-1.72 U-233 /234,U-235 /236 and U-238 "As Received" Uranium-233/234 8620 +/-277 Uranium-235/236 470 +/-72 .6 Uranium-238 8100 +/-268 The following Prep Methods were performed: Method Description GL-RAD-A-026 Laboratory Composite The following Analytical Methods were performed: Method Description 1 DOE EML HASL-300 , Th-01-RC Modified 2 EPA 903.0 3 4 EPA 903.1 Modified DOE EML HASL-300 , U-02-RC Modified Surrogate/Tracer Recovery Test Alphaspec Th, Liquid "As Received" MDC 3.40 3.50 2.60 7 .33 0.426 75 .6 32 .8 54 .0 Thorium-229 Tracer Barium Carrier Uranium-232 Tracer GFPC,Total Alpha Radium, Liquid "As Received" U-233/234,U-235/236 and U-238 "As Received" Notes: RL 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Analyst Counting Uncertainty is calculated at the 68% confidence level (I-sigma). Project: Client ID : Report Date: September 28 , 2023 DNMI00107 DNMIO0I Units PF DF Analyst Date Time Batch Method pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi /L Date Result VS 1 09/23/23 0925 2496263 HXB2 09/18/23 1613 2488333 2 LXPl 09/24/23 0852 2488334 3 VS 1 09/22/23 0806 2496264 4 Time Prep Batch 2486541 Analvst Comments Nominal Recovery % 16.5 106 81.9 Acceptable Limits (15%-125%) (25%-125%) (15%-125%) SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Page 92 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Contact: Project: Client Sample ID : Sample ID: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Ms. Kathy Weinel Tailings Characterization Slimes#2 635551002 Parameter Qualifier Result Uncertainty MDC Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit RL MDA: Minimum Detectable Activity MDC : Minimum Detectable Concentration SQL: Sample Quantitation Limit Page 93 of 106 SDG: 635551 Project: Client ID: Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Energy Fuels Resources (USA), Inc . 225 Union Boulevard Parameter Contact: Project: Client Sample ID: Sample ID: Matrix: Collect Date: Receive Date: Collector: Suite 600 Lakewood, Colorado 80228 Ms . Kathy Weinel Tailings Characterization Slimes #2 635551002 Water 29-AUG-23 08:55 31-AUG-23 Client Qualifier Result Hazardous Waste ASTM D 5057 Specific Gravity "As Received" Specific Gravity 0.951 The following Analytical Methods were performed: Method Description ASTMD5057 Notes: DL 0.0100 RL 0.100 Project: Client ID : Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method none I ES2 09/05/23 0844 2487026 Analvst Comments SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Column headers are defined as follows : DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 77 of 106 SDG: 635551 ,7eM~~w•-P_a_c_e_A_n_al_yt_ic_a_l _________________________ _ /_)°aCi 1673 Terra Avenue Sheridan , WY 82801 ph : (307) 672-8945 I CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-003 Client Sample ID: Cell 4A Analyses General Parameters pH Electrical Conductivity Total Dissolved Solids (180) Alkalinity, Total (As CaCO3) Nitrogen, Ammonia (as N) Anions Alkalinity, Bicarbonate as HCO3 Alkali ni ty , Carbonate as CO3 Chloride Fluoride Nitrogen, Nitrate-Nitrite (as N) Sulfate Cations Calcium Magnes ium Potassium Sodium Cation/Anlon-Milliequivalents Bicarbonate as HCO3 Carbonate as CO3 Chloride Fluoride Nitrate + Nitrite as N Sulfate Calcium Magnesium Potassium Sodium Cation / Anion Balance Cation Sum Anion Sum Cation-Anion Balance These results apply only to the samples tested. Sample Analysis Report Result 2.3 70600 113000 ND 5850 ND ND 10300 3.0 94.4 64100 714 3140 1940 19100 ND ND 289.82 0.15 6.74 1334.48 35.63 258 .04 49 .68 831.75 1593.20 1631.21 1.17 RL 0.1 5 10 5 0.1 5 5 172 0.1 0.1 483 1 2 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 Qual D D Date Reported: 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 9:40:00 AM Date Received: 8/31/2023 10 :44 :00 AM Sampler: Units s.u. µmhos/cm mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L % Matrix: Water CCC: Date Analyzed/lnit 09/02/2023 12:55 AB 09/02/2023 12:55 AB 09/04/2023 10 :14 SKR 09/02/2023 12 :55 AB 09/15/2023 11 :28 AMB 09/02/2023 12:55 AB 09/02/2023 12:55 AB 09/15/2023 17 :01 AB 09/05/2023 19:07 AB 09/08/2023 15:30 JMS 09/15/2023 17:01 AB 09/06/2023 12 :53 DG 09/06/2023 12 :53 DG 09/06/2023 12 :53 DG 09/06/2023 12 :53 DG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/202314:47 JKG 09/18/2023 14 :47 JKG 09/18/202314:47 JKG 09/18/202314 :47 JKG 09/18/202314 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14:47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG Method SM 4500 H B SM 2510B SM 2540 SM 2320B EPA 350 .1 SM 2320B SM 2320B EPA 300 .0 SM 4500FC EPA 353 .2 EPA 300.0 EPA 200 .7 EPA 200 .7 EPA 200 .7 EPA 200 .7 SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E Page 5 of 14 ,JeAnalyticat'-P_a_c_e_A_na_l_yt_ic_al __________________________ _ I ~aci 1673 Terra Avenue Sheridan , \NY 82801 ph : (307) 672-8945 I CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-003 Client Sample ID: Cell 4A Analyses Dissolved Metals Antimony Arsenic Beryllium Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc These results apply only to the samples tested. Sample Analysis Report Result RL Qual 0.97 0.05 4.01 0.01 0.314 0.002 3.10 0.002 3.84 0.01 22 .9 0 .007 417 0.005 686 0.05 1.4 0.1 148 0.02 0.001 0.001 9.59 0.01 45.8 0.01 1.7 0.1 0.16 0.05 0 .39 0.05 ND 0.02 68 .2 0 .1 98 .7 0.005 247 0.02 Date Reported: 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 9:40:00 AM Date Received: 8/31/2023 10 :44 :00 AM Sampler: Matrix: Water COC: Units Date Analyzed/lnit Method mg/L 09/06/2023 12:53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200.7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200.7 mg/L 09/06/2023 15 :20 JGU EPA 245 .1 mg/L 09/06/2023 12:53 DG EPA 200.7 mg/L 09/06/2023 12:53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200.7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 mg/L 09/06/2023 12:53 DG EPA 200 .7 mg/L 09/06/2023 12 :53 DG EPA 200.7 mg/L 09/06/2023 12 :53 DG EPA 200 .7 Page 6 of 14 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date : September 18 , 2023 Contact: Project: Tailings Characterization Client Sample ID : Sample ID: Matrix: Collect Date : Receive Date: Collector: Parameter Qualifier Result Volatile Organics SW846 8260 Volatiles "As Received" 2-Butanone u Acetone u Benzene u Carbon tetrachloride u Chloroform u Chloromethane u Methylene chloride u Naphthalene u Tetrahydrofuran u Toluene u X ylenes (total) u Surrogate/Tracer recovery Toluene-d8 Bromofluorobenzene l ,2-Dichloroethane-d4 ND ND ND ND ND ND ND ND ND ND ND Result Cell 4A 635551003 Water 29-AUG-23 09:40 31-AUG-23 Client DL 8.34 8.72 1.67 1.67 1.67 1.67 2.50 1.67 8.34 1.67 5.00 233 ug/L 235 ug/L 265 ug/L Nominal 50.0 50.0 50.0 Proiect: DNMIO0 107 Client ID : DNMIO0l RL Units PF DF Anah• t Date Time Batch lethod 25.0 ug/L 5 PXYI 09/05/23 1528 2487341 25.0 ug/L 5 5.00 ug/L 5 5 .00 ug/L 5 5 .00 ug/L 5 5 .00 ug/L 5 25.0 ug/L 5 5.00 ug/L 5 25.0 ug/L 5 5 .00 ug/L 5 15 .0 ug/L 5 Recovery% Acceptable Limits Date Time: 09/05/23 15 28 93 (77%-121%) 94 (74%-123%) 106 (76%-127%) Tentatively Identified Compound (TIC) CAS No. No Tentatively Identified Compounds Found RT Est. Concentration Fit Qua/ Date Time: 09/05/23 15 28 The following Analvtical Methods were performed Method Description Analyst Comments SW846 8260D SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit MDA : Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 21 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Contact: Project: Lakewood, Colorado 80228 Ms. Kathy Weinel Tailings Characterization Client Sample ID : Sample ID: Matrix: Cell 4A 635551003 Water Collect Date: Receive Date: 29-AUG-23 09:40 31-AUG-23 Collector: Client Parameter Qualifier Result DL Semi-Volatile-GC/MS SW846 35 I 0C/8270£ SVOA (Separatory Funnel) "As Received" 1,2,4-Trichlorobenzene u ND 30.0 1,2-Dichlorobenzene u ND 30.0 1,2-Diphenylhydrazine u ND 30.0 1,3-Dichlorobenzene u ND 30.0 1,4-Dichlorobenzene u ND 30.0 1-Methylnaphthalene u ND 3.00 2,4,5-Trichlorophenol u ND 30.0 2,4,6-Trichlorophenol u ND 30.0 2,4-Dichlorophenol u ND 30.0 2,4-Dimethylphenol u ND 30.0 2,4-Dinitrophenol u ND 50.0 2,4-Dinitrotoluene u ND 30.0 2,6-Dinitrotoluene u ND 30.0 2-Chloronaphthalene u ND 4.10 2-Chlorophenol u ND 30.0 2-Methyl-4,6-u ND 30.0 dinitrophenol 2-Methylnaphthalene u ND 3.00 2-Nitrophenol u ND 30.0 3 ,3 '-Dimethylbenzidine u ND 33.0 4-u ND 30.0 Bromophenylphenylethe r 4-Chloro-3-u ND 30.0 methylphenol 4-u ND 30.0 Chlorophenylphenylethe r 4-Nitrophenol u ND 30.0 Acenaphthene u ND 3.00 Acenaphthylene u ND 3.00 Anthracene u ND 3.00 Benzidine u ND 39.0 Benzo( a )anthracene u ND 3.00 Page 43 of 106 SDG: 635551 Report Date: September 27 , 2023 Proiect: DNMI00107 Client ID : DNMIO0l RL Units PF DF Anal yst Date Time Batch Method 100 ug/L 0.0100 LL2 09/06/23 0139 2486107 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 200 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10 .0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 10.0 ug/L 0.0100 10 .0 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 0.0100 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc. Address: 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Report Date: September 27, 2023 Contact: Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID : Cell 4A Proiect: DNMI00107 Sample ID: 635551003 Client ID: DNMIO0I Parameter Qualifier Result DL RL Units PF DF Anal );§t Date Time Batc h letbod Semi-Volatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" Benzo(a)pyrene u ND 3.00 10.0 ug/L Benzo(b )fluoranthene u ND 3.00 10.0 ug/L 0.0100 Benzo(ghi)perylene u ND 3.00 10.0 ug/L 0.0100 Benzo(k)fluoranthene u ND 3.00 10.0 ug/L 0.0100 Butylbenzylphthalate u ND 3.00 10.0 ug/L 0.0100 Chrysene u ND 3.00 10.0 ug/L 0.0100 Di-n-butylphthalate u ND 3.00 10.0 ug/L 0.0100 Di-n-octylphthalate u ND 3.00 10.0 ug/L 0.0100 Dibenzo( a,h)anthracene u ND 3.00 10.0 ug/L 0.0100 Diethylphthalate u ND 3.00 10.0 ug/L 0.0100 Dimethylphthalate u ND 3.00 10.0 ug/L 0.0100 Diphenylamine u ND 30.0 100 ug/L 0.0100 Fluoranthene u ND 3.00 10.0 ug/L 0.0100 Fluorene u ND 3.00 10.0 ug/L 0.0100 Hexachlorobenzene u ND 30.0 100 ug/L 0.0100 Hexachlorobutadiene u ND 30.0 100 ug/L 0.0100 Hexachlorocyclopentadi u ND 30.0 100 ug/L 0.0100 ene Hexachloroethane u ND 30.0 100 ug/L 0.0100 Indeno( 1,2,3-cd)pyrene u ND 3.00 10.0 ug/L 0.0100 lsophorone u ND 35.0 100 ug/L 0.0100 N-Methyl-N-u ND 30.0 100 ug/L 0.0100 nitrosomethylamine N-u ND 30.0 100 ug/L 0.0100 Nitrosodipropylamine Naphthalene u ND 3.00 10.0 ug/L 0.0100 Nitro benzene u ND 30.0 100 ug/L 0.0100 Pentachlorophenol u ND 30.0 100 ug/L 0.0100 Phenanthrene u ND 3.00 10.0 ug/L 0.0100 Phenol u ND 30.0 100 ug/L 0.0100 Pyrene u ND 3.00 10.0 ug/L 0.0100 Pyridine u ND 30.0 100 ug/L 0.0100 bis(2-Chloro-l-u ND 30.0 100 ug/L 0.0100 methylethyl)ether bis(2-u ND 30.0 100 ug/L 0.0100 Chloroethoxy )methane bis(2-Chloroethyl) ether u ND 30.0 100 ug/L 0.0100 bis(2-u ND 3.00 10.0 ug/L 0.0100 Ethylhexyl)phthalate Page 44 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood , Colorado 80228 Ms . Kathy Weinel Report Date : September 27, 2023 Contact: Project: Tailings Characterization Client Sample ID : Sample ID: Cell 4A 635551003 Proiect: DNMI00107 Client ID: DNMIO0l Parameter Qualifier Result DL RL Uni ts PF DF A nal yst Date Time Batch Method Semi-Volatile-GC/MS SW846 35J0C/8 270E SVOA (Separatory Funnel) "As Received" m,p-Cresols U ND 37.0 o-Cresol U ND 30.0 Surrogate/Tracer recovery Result Nominal Phenol-d5 301 ug/L l000 N itrobenzene-d5 338 ug/L 500 2-Fluorobiphenyl 348 ug/L 500 2-Fluorophenol 373 ug/L l000 p-Terphenyl-d 14 403 ug/L 500 2,4,6-Tribromophenol 824 ug/L l000 Tentatively Identified Compound (TIC) CASNo. RT unknown 4 .293 unknown 4.341 The followin Pre Methods were erformed Method Description SW846 3510C SW846 35IOC Prep Semivolatiles 8270 The following Analvtical Methods were performed Method Description SW846 35IOC/8270E 100 100 ug/L 0.0100 ug/L 0.0100 Recovery% Acceptable Limits 30 (15%-85%) 68 (39%-112%) 70 (39%-112%) 37 (11%-79%) 81 (24%-129%) 82 (37%-132%) Est. Concentration Fit 66 .5 ug/L 56 66 .5 ug/L 50 Analyst Date DG3 09/05/23 Qua/ J J Time 1147 Analyst Comments Date Time: 09/06/23 OJ 39 Date Time: 09/06/23 OJ 39 Prep Batch 2486099 SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows : DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 45 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company: Address: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID: Sample ID: Matrix: Collect Date: Receive Date: Collector: Cell 4A 635551003 Water 29-AUG-23 09:40 31-AUG-23 Client Parameter Qualifier Result Uncertainty High Rad Testing Alphaspec Th, Liquid "As Received" Thorium-228 1030 +/-106 Thorium-230 l.61E+05 +/-1310 Thorium-232 2110 +/-149 GFPC,Total Alpha Radium, Liquid "As Received" Gross Radium Alpha 9160 +/-112 Lucas Cell , Ra226, liquid "As Received" Radium-226 87.1 +/-1.82 U-233/234,U-235/236 and U-238 "As Received" Uranium-233/234 24000 +/-538 Uranium-235/236 1320 +/-141 Uranium-238 24900 +/-548 The following Prep Methods were performed: Method Description GL-RAD-A-026 Laboratory Composite The following Analytical Methods were performed: Method Description I DOE EML HASL-300, Th-01-RC Modified 2 EPA 903.0 3 EPA 903.1 Modified 4 DOE EML HASL-300, U-02-RC Modified Surrogate/Tracer Recovery Test Alphaspec Th, Liquid "As Received" MDC 45.1 56.3 36.0 6.58 0.292 104 44.6 57.7 Thorium-229 Tracer Barium Carrier Uranium-232 Tracer GFPC,Total Alpha Radium, Liquid "As Received" U-233/234,U-235/2 36 and U-238 "As Received" Notes: RL 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Analyst Counting Uncertainty is calculated at the 68% confidence level (I-sigma). Project: Client ID : Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L Date Result vs 1 09 /22 /23 0751 2496263 HXB2 09/18/23 1613 2488333 2 LXP I 09/24/23 0928 2488334 3 vs 1 09/22/23 0806 2496264 4 Time Prep Batch 2486541 Analyst Comments Nominal Recovery% 54 117 60.3 Acceptable Limits (15 %-125%) (25%-125%) (15%-125%) SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Page 94 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Contact: Project: Client Sample ID: Sample ID: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Ms . Kathy Weinel Tailings Characterization Cell 4A 635551003 Parameter Qualifier Result Uncertainty MDC Column headers are defined as follows : DF: Dilution Factor DL: Detection Limit Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit RL MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit Page 95 of 106 SDG: 635551 Project: Client ID : Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www .gel.com Certificate of Analysis Company : Address: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Parameter Contact: Project: Client Sample ID : Sample ID: Matrix: Collect Date: Receive Date: Collector: Suite 600 Lakewood, Colorado 80228 Ms . Kathy Weinel Tailings Characterization Cell 4A 635551003 Water 29-AUG-23 09:40 31-AUG-23 Client Qualifier Result Hazardous Waste ASTM D 5057 Specific Gravity "As Received" Specific Gravity I .07 The following Analytical Methods were performed: Method Description ASTMD5057 Notes: DL 0.0100 RL 0.100 Project: Client ID : Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method none I ES2 09/05/23 0844 2487026 Analyst Comments SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Column headers are defined as follows : DF: Dilution Factor Le/LC: Critical Level DL: Detection Limit MDA : Minimum Detectable Activity MDC: Minimum Detectable Concentration PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 78 of 106 SDG: 635551 Jf)eAnalyticat'-P_a_c_e_A_n_al_yt_ic_al __________________________ _ I J aci 1673 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-004 Client Sample ID: Cell 4A LOS l Analyses General Parameters pH Electrical Conductivity Total Dissolved Solids (180) Alkalinity, Total (As CaCO3) Nitrogen, Ammonia (as N) Anions Alkalinity , Bicarbonate as HCO3 Alkalinity, Carbonate as CO3 Chloride Fluoride Nitrogen , Nitrate-Nitrite (as N) Sulfate Cations Calcium Magnesium Potassium Sodium Cation/Anion-Milliequivalents Bicarbonate as HCO3 Carbonate as CO3 Chloride Fluoride Nitrate+ Nitrite as N Sulfate Calcium Magnesium Potassium Sodium Cation I Anion Balance Cation Sum Anion Sum Cation-Anion Balance These results apply only to the samples tested. Sample Analysis Report Result 2.2 28400 32500 ND 1470 ND ND 2570 2.3 0.5 18900 538 1120 452 4730 ND ND 75.98 0.12 0.03 431.88 23.49 85.21 10.13 186.85 746 .98 974.93 13.23 RL 0 .1 5 10 5 0.1 5 5 86 .1 0 .1 0.1 241 2 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 Qual D D Date Reported : 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 10:00:00 AM Date Received: 8/31/2023 10 :44:00 AM Sampler: Units S.U. µmhos/cm mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L % Matrix: Water COC: Date Analyzed/lnit 09/02/2023 12:59 AB 09/02/202312:59 AB 09/04/2023 10:17 SKR 09/02/2023 12 :59 AB 09/15/2023 10:29 AMB 09/02/2023 12 :59 AB 09/02/2023 12 :59 AB 09/11/2023 23 :01 AB 09/05/2023 19 :14 AB 09/08/2023 15 :32 JMS 09/11/2023 23 :01 AB 09/06/2023 12:59 DG 09/06/2023 12 :59 DG 09/06/2023 12 :59 DG 09/06/2023 12 :59 DG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14 :47 JKG 09/18/202314 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG Method SM 4500 H B SM 2510B SM 2540 SM 2320B EPA 350.1 SM 2320B SM 2320B EPA 300 .0 SM 4500FC EPA 353 .2 EPA 300 .0 EPA 200 .7 EPA 200 .7 EPA 200 .7 EPA 200 .7 SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E Page 7 of 14 ,7eAna/yticaf'-P_a_c_e_A_na_l_yt_ic_al __________________________ _ I ~aci 1673 Terra Avenue Sheridan , WY 82801 ph : (307) 672-8945 CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-004 Client Sample ID: Cell 4A LOS Analyses Dissolved Metals Antimony Arsenic Beryllium Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc These results apply only to the samples tested. Sample Analysis Report Result RL Qual 0.13 0.05 5.07 0.01 0.120 0.002 1.18 0.002 1.23 0.01 8.99 0 .007 108 0.005 409 0.05 0.3 0.1 51.1 0.02 ND 0.001 1.26 0.01 19.0 0.01 0.6 0.1 ND 0.05 0.25 0.05 ND 0.02 22 .0 0.1 73 .1 0.005 103 0.02 Date Reported: 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 10:00:00 AM Date Received: 8/31/2023 10:44:00 AM Sampler: Matrix: Water CCC: Units Date Analyzed/lnit Method mg/L 09/06/2023 12:59 DG EPA 200 .7 mg/L 09/06/2023 12:59 DG EPA 200.7 mg/L 09/06/2023 12:59 DG EPA 200 .7 mg/L 09/06/2023 12:59 DG EPA 200 .7 mg/L 09/06/2023 12 :59 DG EPA 200 .7 mg/L 09/06/2023 12 :59 DG EPA 200 .7 mg/L 09/06/2023 12 :59 DG EPA 200 .7 mg/L 09/06/2023 12 :59 DG EPA200.7 mg/L 09/06/2023 12 :59 DG EPA 200 .7 mg/L 09/06/2023 12:59 DG EPA 200.7 mg/L 09/06/2023 15:23 JGU EPA 245 .1 mg/L 09/06/2023 12:59 DG EPA 200 .7 mg/L 09/06/2023 12:59 DG EPA 200.7 mg/L 09/06/2023 12:59 DG EPA 200.7 mg/L 09/06/2023 12:59 DG EPA 200 .7 mg/L 09/06/2023 12:59 DG EPA 200 .7 mg/L 09/06/2023 12 :59 DG EPA 200 .7 mg/L 09/06/2023 12:59 DG EPA 200 .7 mg/L 09/06/2023 12:59 DG EPA 200 .7 mg/L 09/06/2023 12:59 DG EPA 200.7 Page 8 of 14 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms . Kathy Weinel Report Date : September 18 , 2023 Contact: Project: Tailings Characterization Client Sample ID : Cell 4A LDS 635551004 Water Sample ID: Matrix: Collect Date: Receive Date : Collector: Parameter Qualifier Resull Volatile Organics SW846 8260 Volatiles "As Received" 2-Butanone u Acetone u Benzene u Carbon tetrachloride u Chloroform Chloromethane u Methylene chloride u Naphthalene u Tetrahydrofuran u Toluene u X ylenes (total) u Surrogate/Tracer recovery Toluene-d8 Bromofluorobenzene l ,2-Dichloroethane-d4 ND ND ND ND 113 ND ND ND ND ND ND 29-AUG-23 10:00 31-AUG-23 Client DL 8.34 8.72 1.67 1.67 1.67 1.67 2 .50 1.67 8 .34 1.67 5.00 Result Nominal 236 ug/L 245 ug/L 273 ug/L 50.0 50.0 50.0 Proiect: DNMIO0 I 07 Client ID: DNMIO0I RL Units PF DF Analyst Date Time Batch Method 25 .0 ug/L 5 PXYl 09/05/23 1556 2487341 25 .0 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 5 .00 ug/L 5 5 .00 ug/L 5 25 .0 ug/L 5 5 .00 ug/L 5 25 .0 ug/L j 5.00 ug/L 5 15 .0 ug/L 5 Recovery% Acceptable Limits Date Time: 09/05/2315 56 95 (77%-121%) 98 (74%-123%) 109 (76%-127%) Tentatively Identified Compound (TIC) CAS No. No Tentatively Identified Compounds Found RT Est. Concentration Fit Qua/ Date Time: 09/05/23 15 56 The followin Anal tical Methods were erformed Method Description Analyst Comments SW846 8260D SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows : DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC : Minimum Detectable Concentration Le /LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 22 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company: Energy Fuels Resources (USA), Inc. Address: 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Report Date: September 27, 2023 Contact: Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID : Cell4A LDS Sample ID: 635551004 Proiect: DNMIOO 107 Client ID: DNMIOOl Matrix: Water Collect Date: 29-AUG-23 10:00 Receive Date: 31-AUG-23 Collector: Client Parameter Ouallfier Result DL RL Units PF DF Analyst Date Time Batch lethod Semi-Volatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" 1,2,4-Trichlorobenzene u ND 30.0 100 ug/L 0.0100 I LL2 09/06/23 0202 2486107 1,2-Dichlorobenzene u ND 30.0 100 ug/L 0.0100 1 1,2-Diphenylhydrazine u ND 30.0 100 ug/L 0.0100 l 1,3-Dichlorobenzene u ND 30.0 100 ug/L 0.0100 I 1,4-Dichlorobenzene u ND 30.0 100 ug/L 0.0100 1-Methylnaphthalene u ND 3.00 10.0 ug/L 0.0100 2,4,5-Trichlorophenol u ND 30.0 100 ug/L 0.0100 2,4,6-Trichlorophenol u ND 30.0 100 ug/L 0.0100 2,4-Dichlorophenol u ND 30.0 100 ug/L 0.0100 2,4-Dimethylphenol u ND 30.0 100 ug/L 0.0100 2,4-Dinitrophenol u ND 50.0 200 ug/L 0.0100 2,4-Dinitrotoluene u ND 30.0 100 ug/L 0.0100 2,6-Dinitrotoluene u ND 30.0 100 ug/L 0.0100 2-Chloronaphthalene u ND 4.10 10.0 ug/L 0.0100 2-Chlorophenol u ND 30.0 100 ug/L 0.0100 2-Methyl-4,6-u ND 30.0 100 ug/L 0.0100 dinitrophenol 2-Methylnaphthalene u ND 3.00 10.0 ug/L 0.0100 2-Nitrophenol u ND 30.0 100 ug/L 0.0100 3 ,3 '-Dimethylbenzidine u ND 33.0 100 ug/L 0.0100 4-u ND 30.0 100 ug/L 0.0100 Bromophenylphenylethe r 4-Chloro-3-u ND 30.0 100 ug/L 0.0100 methyl phenol 4-u ND 30.0 100 ug/L 0.0100 Chlorophenylphenylethe r 4-Nitrophenol u ND 30.0 100 ug/L 0.0100 Acenaphthene u ND 3.00 10.0 ug/L 0.0100 Acenaphthylene u ND 3.00 10.0 ug/L 0.0100 Anthracene u ND 3.00 10.0 ug/L 0.0100 Benzidine u ND 39.0 100 ug/L 0.0100 Benzo( a )anthracene u ND 3.00 10.0 ug/L 0.0100 0.0100 Page 46 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www .gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc . Address: 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Report Date : September 27, 2023 Contact: Ms . Kathy Weinel Project: Tailings Characterization Client Sample ID : Cell 4A LDS Proiect: DNMI00107 Sample ID: 635551004 Client ID: DNMIO0l Parameter Qualifier Result DL RL Units PF DF Ana l)'.~t Date Time Batch Method Semi-Volatilc-GC/MS SW846 3510C/8270E SVOA (Separatory Funnel) "As Received" Benzo(a)pyrene u ND 3.00 10 .0 ug/L Benzo(b )fluoranthene u ND 3.00 10 .0 ug/L 0.0100 Benzo(ghi)perylene u ND 3.00 10 .0 ug/L 0.0100 Benzo(k)fluoranthene u ND 3.00 10 .0 ug/L 0.0100 Butylbenzylphthalate u ND 3.00 10 .0 ug/L 0.0100 Chrysene u ND 3.00 10.0 ug/L 0.0100 Di-n-butylphthalate u ND 3.00 10.0 ug/L 0.0100 Di-n-octylphthalate u ND 3.00 10.0 ug/L 0.0100 Dibenzo( a,h)anthracene u ND 3.00 10.0 ug/L 0.0100 Diethylphthalate u ND 3.00 10 .0 ug/L 0.0100 Dimethylphthalate u ND 3 .00 10 .0 ug/L 0.0100 Diphenylamine u ND 30.0 100 ug/L 0.0100 Fluoranthene u ND 3 .00 10.0 ug/L 0 .0100 Fluorene u ND 3 .00 10 .0 ug/L 0 .0100 Hexachlorobenzene u ND 30.0 100 ug/L 0.0100 Hexachlorobutadiene u ND 30.0 100 ug/L 0.0100 Hexachlorocyc I open ta di u ND 30.0 100 ug/L 0.0100 ene Hexachloroethane u ND 30.0 100 ug/L 0.0100 Indeno( 1,2,3-cd)pyrene u ND 3.00 10 .0 ug/L 0.0100 Isophorone u ND 35.0 100 ug/L 0.0100 N-Methyl-N-u ND 30 .0 100 ug/L 0.0100 nitrosomethylamine N-u ND 30.0 100 ug/L 0.0100 Nitrosodipropylamine Naphthalene u ND 3.00 10 .0 ug/L 0.0100 Nitro benzene u ND 30.0 100 ug/L 0.0100 Pentachlorophenol u ND 30.0 100 ug/L 0.0100 Phenanthrene u ND 3.00 10.0 ug/L 0.0100 Phenol u ND 30.0 100 ug/L 0.0100 Pyrene u ND 3.00 10 .0 ug/L 0.0100 Pyridine u ND 30.0 100 ug/L 0.0100 bis(2-Chloro-l-u ND 30.0 100 ug/L 0.0100 methylethyl)ether bis(2-u ND 30.0 100 ug/L 0 .0100 Chloroethoxy)methane bis(2-Chloroethyl) ether u ND 30.0 100 ug/L 0.0100 bis(2-u ND 3 .00 10 .0 ug/L 0.0100 Ethylhexyl)phthalate Page 47 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date : September 27 , 2023 Contact: Project: Tailings Characterization Client Sample ID : Sample ID: Parameter ualifier Result Semi-Volatile-GC/MS Cell 4A LDS 635551004 DL SW846 35J0C/82 70E SVOA (Separatory Funnel) "As Received" m,p-Cresols U ND 37 .0 o-Cresol U ND 30.0 Surrogate/Tracer recovery p-Terphenyl-d 14 Phenol-d5 Nitrobenzene-d5 2-Fluorobiphenyl 2-Fluorophenol 2,4 ,6-Tribromophenol Result 272 ug/L 299 ug/L 373 ug/L 380 ug/L 383 ug/L 854 ug/L Nominal 500 1000 500 500 1000 1000 Proiect: DNMIOO I 07 Client ID : DNMIOOI RL nits PF OF na l 1st Date Time Bate Icthod 100 ug/L 0.0100 100 ug/L 0.0100 Recovery% Acceptable Limits Date Time: 09/06/23 02 02 54 (24%-129%) 30 (15%-85%) 75 (39%-112%) 76 (39%-112%) 38 (11%-79%) 85 (37%-132%) Tentatively Identified Compound (TIC) CAS No. RT Est. Concentration Fit Qua/ Date Time: 09/06/23 02 02 No Tentatively Identified Compounds Found Methods were erformed Description Analyst Date Time Prep Batch SW846 3510C SW846 3510C Prep Semivolatiles 8270 DG3 09/05/23 1147 2486099 The followin Anal tical Methods were erformed Method Description Analyst Comments SW846 35!0C/8270E SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows : DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 48 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Energy Fuels Resources (USA), Inc . 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID: Sample ID: Matrix: Collect Date: Receive Date: Collector: Cell 4A LDS 635551004 Water 29-AUG-23 10:00 31-AUG-23 Client Parameter Qualifier Result Uncertainty High Rad Testing Alphaspec Th, Liquid "As Received" Thorium-228 117 +/-15 .5 Thorium-230 13100 +/-158 Thorium-232 109 +/-14.6 GFPC,Total Alpha Radium, Liquid "As Received" Gross Radium Alpha 2840 +/-63 .7 Lucas Cell, Ra226, liquid "As Received" Radium-226 5.29 +/-0.451 U-233/234,U-235 /236 and U-238 "As Received" Uranium-233 /234 7720 +/-272 Uranium-235/236 458 +/-74.4 Uranium-238 7120 +/-260 The following Prep Methods were performed: Method Description GL-RAD-A-026 Laboratory Composite The following Analytical Methods were performed: Method Description DOE EML HASL-300, Th-01-RC Modified 2 EPA 903.0 3 4 EPA 903.1 Modified DOE EML HASL-300, U-02-RC Modified Surrogate/Tracer Recovery Test Alphaspec Th, Liquid "As Received" MDC 15 .7 14.5 10.9 7.34 0.511 80.8 35 .3 45.6 Thorium-229 Tracer Barium Carrier Uranium-232 Tracer GFPC,Total Alpha Radium, Liquid "As Received" U-233 /234,U-235 /236 and U-238 "As Received" Notes: RL 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Analyst Counting Uncertainty is calculated at the 68% confidence level (I-sigma). Project: Client ID : Report Date: September 28, 2023 DNMI00107 DNMIO0J Units PF DF Analyst Date Time Batch Method pCi /L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L Date Result VSl 09/22/23 0751 2496263 HXB2 09/18/23 1613 2488333 2 LXPl 09/24/23 0928 2488334 3 VS! 09/22/23 0806 2496264 4 Time Prep Batch 2486541 Anal yst Comments Nominal Recovery% 74 .4 104 72 .9 Acceptable Limits (15%-125%) (25%-125%) (15%-125 %) SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Page 96 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Contact: Project: Client Sample ID : Sample ID: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Ms. Kathy W einel Tailings Characterization Cell4A LDS 635551004 Parameter Qualifier Result Uncertainty MDC Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit RL MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration SQL: Sample Quantitation Limit Page 97 of 106 SDG: 635551 Project: Client ID: Report Date: September 28, 2023 DNMI00107 DNMIO0I Units PF DF Analyst Date Time Batch Method GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address : Energy Fuels Resources (USA), Inc . 225 Union Boulevard Parameter Contact: Project: Client Sample ID : Sample ID: Matrix: Collect Date: Receive Date: Collector: Suite 600 Lakewood, Colorado 80228 Ms. Kathy Weinel Tailings Characterization Cell 4A LDS 635551004 Water 29-AUG-23 10:00 31-AUG-23 Client Qualifier Result Hazardous Waste ASTM D 5057 Specific Gravity "As Received" Specific Gravity 1.01 The following Analytical Methods were performed: Method Description ASTMD 5057 Notes: DL 0.0100 RL 0.100 Project: Client ID : Report Date: September 28, 2023 DNMIO0I07 DNMIO0l Units PF DF Analyst Date Time Batch Method none I ES2 09 /05 /23 0844 2487026 Analyst Commenls SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC : Critical Level PF : Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 79 of 106 SDG: 635551 ~eAnafytica(_P_a_c_e_A_n_a_1y_tic_a_1 ___________________________ _ (_A"aCi 1673 Terra Avenue Sheridan, WY 82801 ph: (307) 672-8945 CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-005 Client Sample ID: Cell 48 Analyses General Parameters pH Electrical Conductivity Total Dissolved Solids (180) Alkalinity, Total (As CaCO3) Nitrogen , Ammonia (as N) Anions Alkalinity, Bicarbonate as HCO3 Alkalinity , Carbonate as CO3 Chloride Fluoride Nitrogen, Nitrate-Nitrite (as N) Sulfate Cations Calcium Magnesium Potassium Sodium Cation/Anion-Milliequivalents Bicarbonate as HCO3 Carbonate as CO3 Chloride Fluoride Nitrate + Nitrite as N Sulfate Calcium Magnesium Potassium Sodium Cation/ Anion Balance Cation Sum Anion Sum Cation-Anion Balance These results apply only to the samples tested. Sample Analysis Report Result 2.0 6370 4470 ND 3450 ND ND 329 1.7 0.7 2830 188 23 43 336 ND ND 9.28 0.08 0.05 59.0 9.36 1.92 1.10 14.60 273 .73 68.43 59 .99 RL 0.1 5 10 5 0.1 5 5 4.39 0.1 0.1 12.3 1 2 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 Qual D D Date Reported: 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 10:15:00 AM Date Received: 8/31/2023 10 :44 :00 AM Sampler: Matrix: Water COC: Units Date Analyzed/lnit Method s.u . 09/02/2023 13 :04 AB SM 4500 H B µmhos/cm 09/02/2023 13 :04 AB SM 2510B mg/L 09/04/2023 10 :20 SKR SM 2540 mg/L 09/02/2023 13 :04 AB SM 2320B mg/L 09/15/202311 :09 AMB EPA 350.1 mg/L 09/02/2023 13 :04 AB SM 2320B mg/L 09/02/2023 13 :04 AB SM 2320B mg/L 09/15/202317:18 AB EPA 300.0 mg/L 09/05/2023 19 :22 AB SM 4500FC mg/L 09/08/2023 15 :33 JMS EPA 353 .2 mg/L 09/15/2023 17 :18 AB EPA 300.0 mg/L 09/15/2023 17 :58 DG EPA 200 .7 mg/L 09/15/2023 17 :58 DG EPA200.7 mg/L 09/15/2023 17 :58 DG EPA 200 .7 mg/L 09/06/2023 13 :01 DG EPA 200.7 meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14:4 7 JKG SM 1030E meq/L 09/18/202314 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E meq/L 09/18/2023 14:47 JKG SM 1030E meq/L 09/18/2023 14 :47 JKG SM 1030E % 09/18/2023 14 :47 JKG SM 1030E Page 9 of 14 ,,eAna/yfica(_P_a_c_e _A_na_ly_t _ic_al __________________________ _ (/aCi 1673 Terra Avenue Sheridan , WY 82801 ph: (307) 672-8945 l Sample Analysis Report CLIENT: Energy Fuels (White Mesa) Date Reported: 9/26/2023 6425 S. Highway 191 Report ID: S2308596002 Blanding, UT 84511 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 1 0: 15: 00 AM Project: Date Received: 8/31/2023 10:44:00 AM Lab ID: S2308596-005 Sampler: Client Sample ID: Cell48 Matrix: Water COC: Analyses Result RL Qual Units Date Analyzed/lnit Method Dissolved Metals Antimony ND 0.05 mg/L 09/06/2023 13:01 DG EPA 200.7 Arsenic 0.02 0.01 mg/L 09/06/2023 13:01 DG EPA 200.7 Beryllium 0.004 0.002 mg/L 09/06/2023 13:01 DG EPA 200.7 Cadmium 0.069 0.002 mg/L 09/06/2023 13:01 DG EPA 200.7 Chromium 0.28 0.01 mg/L 09/06/2023 13:01 DG EPA 200.7 Cobalt 0.140 0.007 mg/L 09/06/2023 13:01 DG EPA 200.7 Copper 4.45 0.005 mg/L 09/06/2023 13:01 DG EPA 200.7 Iron 73.4 0.05 mg/L 09/06/2023 13:01 DG EPA 200.7 Lead ND 0.1 mg/L 09/06/2023 13:01 DG EPA 200.7 Manganese 2.29 0.02 mg/L 09/06/2023 13:01 DG EPA 200.7 Mercury ND 0.001 mg/L 09/06/2023 15:25 JGU EPA 245.1 Molybdenum 0.38 0.01 mg/L 09/06/2023 13:01 DG EPA 200.7 Nickel 1.00 0.01 mg/L 09/06/2023 13:01 DG EPA 200.7 Selenium ND 0.1 mg/L 09/06/2023 13:01 DG EPA 200.7 Silver ND 0.05 mg/L 09/06/2023 13:01 DG EPA 200.7 Thallium 0.11 0.05 mg/L 09/06/2023 13:01 DG EPA 200.7 Tin ND 0.02 mg/L 09/06/2023 13:01 DG EPA 200.7 Uranium 0.2 0.1 mg/L 09/06/2023 13:01 DG EPA 200.7 Vanadium 2.89 0.005 mg/L 09/06/2023 13:01 DG EPA 200.7 Zinc 2.83 0.02 mg/L 09/06/2023 13:01 DG EPA 200.7 These results apply only to the samples tested. Page 10 of 14 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company ; Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date : September 18 , 2023 Contact: Project: Tailings Characterization Client Sample ID : Cell 4B 635551005 Water Sample ID: Matrix: Collect Date : Receive Date : Collector: Parameter ualilier Result Volatile Organics SW846 8260 Volatiles "As Received" 2-Butanone u Acetone u Benzene u Carbon tetrachloride u Chloroform u Chloromethane u Methylene chloride u Naphthalene u Tetrahydrofuran u Toluene u Xylenes (total) u Surrogate/Tracer recovery Toluene-d8 Bromofluorobenzene l ,2-Dichloroethane-d4 ND ND ND ND ND ND ND ND ND ND ND 29-AUG-23 10:15 31-AUG-23 Client DL Result 234 ug/L 245 ug/L 271 ug/L 8.34 8.72 1.67 1.67 1.67 1.67 2.50 1.67 8.34 1.67 5.00 Nominal 50.0 50.0 50.0 Proiect: DNMI00107 Client ID : DNMIO0l RL Units PF DF Anal •st Date Time Batch Method 25 .0 ug/L 5 PXYl 09/05/23 1624 2487341 25 .0 ug/L 5 5.00 ug/L 5 5 .00 ug/L 5 5 .00 ug/L 5 5 .00 ug/L 5 25 .0 ug/L 5 5 .00 ug/L 5 25 .0 ug/L 5 5 .00 ug/L 5 15 .0 ug/L 5 Recovery% Acceptable Limits Date Time: 09/05/2316 24 94 (77%-121%) 98 (74%-123%) 108 (76%-127%) Tentatively Identified Compound (TIC) CAS No. No Tentativ ely Identified Compounds Found RT Est. Concentration Fit Qua/ Date Time: 09/05/2316 24 The following Analytical Methods were performed Method Description Analyst Comments SW846 8260D SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit MDA : Minimum Detectable Activity MDC : Minimum Detectable Concentration Le /LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL : Sample Quantitation Limit Page 23 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www .gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Contact: Project: Lakewood, Colorado 80228 Ms . Kathy Weinel Tailings Characterization Client Sample ID : Sample ID: Matrix: Cell 4B 635551005 Water Collect Date : Receive Date : 29-AUG-23 10:15 31-AUG-23 Collector: Client Parameter Qualifier Result DL Semi-Volatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" 1,2,4-Trichlorobenzene u ND 30.0 1,2-Dichlorobenzene u ND 30.0 1,2-Diphenylhydrazine u ND 30.0 1,3-Dichlorobenzene u ND 30.0 1,4-Dichlorobenzene u ND 30.0 1-Methylnaphthalene u ND 3.00 2,4,5-Trichlorophenol u ND 30.0 2,4,6-Trichlorophenol u ND 30 .0 2,4-Dichlorophenol u ND 30.0 2,4-Dimethylphenol u ND 30 .0 2,4-Dinitrophenol u ND 50 .0 2,4-Dinitrotoluene u ND 30.0 2,6-Dinitrotoluene u ND 30.0 2-Chloronaphthalene u ND 4.10 2-Chlorophenol u ND 30.0 2-Methyl-4,6-u ND 30.0 dinitrophenol 2-Methylnaphthalene u ND 3.00 2-Nitrophenol u ND 30.0 3 ,3 '-Dimethylbenzidine u ND 33.0 4-u ND 30.0 Bromophenylphenylethe r 4-Chloro-3-u ND 30.0 methylphenol 4-u ND 30.0 Chlorophenylphenylethe r 4-Nitrophenol u ND 30.0 Acenaphthene u ND 3.00 Acenaphthylene u ND 3.00 Anthracene u ND 3.00 Benzi dine u ND 39.0 Benzo( a )anthracene u ND 3.00 Page 49 of 106 SDG: 635551 Report Date : September 27, 2023 Proiect: DNMI00107 Client ID : DNMIO0I RL Units PF DF Anal \l st Date Time Batch lethod 100 ug/L 0.0100 LL2 09/06/23 0224 2486107 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 JOO ug/L 0.0100 10 .0 ug/L 0.0100 JOO ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 200 ug/L 0.0100 JOO ug/L 0.0100 100 ug/L 0.0100 10 .0 ug/L 0.0100 100 ug/L 0.0100 JOO ug/L 0.0100 10 .0 ug/L 0.0100 100 ug/L 0.0100 JOO ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 JOO ug/L 0.0100 100 ug/L 0.0100 10 .0 ug/L 0.0100 10 .0 ug/L 0.0100 10 .0 ug/L 0.0100 100 ug/L 0.0100 10 .0 ug/L 0.0100 0.0100 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Report Date : September 27, 2023 Contact: Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID: Cell 4B Proiect: DNMI00107 Sample ID: 635551005 Client ID: DNMIO0l Parameter ualilier Result DL RL Units PF DF al •st Date Time Batch Method Semi-Volatile-GC/MS SW846 35/0C/8270£ SVOA (Separatory Funnel) "As Received" Benzo( a )pyrene u ND 3.00 10.0 ug/L Benzo(b )fluoranthene u ND 3.00 10 .0 ug/L 0.0100 Benzo(ghi)perylene u ND 3 .00 10 .0 ug/L 0.0100 Benzo(k)fluoranthene u ND 3.00 10 .0 ug/L 0.0100 Butylbenzylphthalate u ND 3.00 10.0 ug/L 0.0100 Chrysene u ND 3.00 10 .0 ug/L 0.0100 Di-n-butylphthalate u ND 3.00 10 .0 ug/L 0.0100 Di-n-octylphthalate u ND 3.00 10 .0 ug/L 0.0100 Dibenzo( a,h)anthracene u ND 3.00 10 .0 ug/L 0.0100 Diethylphthalate u ND 3.00 10 .0 ug/L 0.0100 Dimethylphthalate u ND 3.00 10 .0 ug/L 0.0100 Diphenylamine u ND 30.0 100 ug/L 0.0100 Fluoranthene u ND 3.00 10.0 ug/L 0.0100 Fluorene u ND 3.00 10 .0 ug/L 0.0100 Hexachlorobenzene u ND 30.0 100 ug/L 0.0100 Hexachlorobutadiene u ND 30.0 100 ug/L 0.0100 Hexachlorocyclopentadi u ND 30.0 100 ug/L 0.0100 ene Hexachloroethane u ND 30.0 100 ug/L 0.0100 Indeno(l ,2,3-cd)pyrene u ND 3.00 10 .0 ug/L 0.0100 Isophorone u ND 35.0 100 ug/L 0.0100 N-Methyl-N-u ND 30.0 100 ug/L 0.0100 nitrosomethylamine N-u ND 30.0 100 ug/L 0.0100 Nitrosodipropylamine Naphthalene u ND 3.00 10 .0 ug/L 0 .0100 Nitro benzene u ND 30 .0 100 ug/L 0.0100 Pentachlorophenol u ND 30.0 100 ug/L 0.0100 Phenanthrene u ND 3.00 10.0 ug/L 0.0100 Phenol u ND 30.0 100 ug/L 0.0100 Pyrene u ND 3.00 10 .0 ug/L 0.0100 Pyridine u ND 30.0 100 ug/L 0.0100 bis(2-Chloro-l-u ND 30.0 100 ug/L 0.0100 methylethyl)ether bis(2-u ND 30.0 100 ug/L 0.0100 Chloroethoxy )methane bis(2-Chloroethyl) ether u ND 30.0 100 ug/L 0.0100 bis(2-u ND 3 .00 10 .0 ug/L 0.0100 Ethylhexyl)phthalate Page 50 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date: September 27, 2023 Contact: Project: Tailings Characterization Client Sample ID: Sample ID: Cell 4B 635551005 Parameter Qualifier Result DL Semi-Voiatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" m,p-Cresols U ND 37.0 o-Cresol U ND 30.0 Surrogate/Tracer recovery Phenol-d5 p-Terphenyl-d 14 2-Fluorophenol 2-Fluorobiphenyl N itrobenzene-d5 2,4,6-Tribromophenol Result 248 ug/L 274 ug/L 317 ug/L 354 ug/L 361 ug/L 726 ug/L Nominal 1000 500 1000 500 500 1000 Tentatively Identified Compound (TIC) CAS No. RT No Tentatively Identified Compounds Found The following Prep Methods were performed Method Description SW846 3510C SW846 35 I0C Prep Semivolatiles 8270 The followin Anal tical Methods were erformed Method Description SW846 3510C/8270E Proiect: DNMI00107 Client ID: DNMIOOl RL Un its PF DF nalyst Date Time Batch Method 100 ug/L 0.0100 100 ug/L 0.0100 Recovery% Acceptable Limits Date Time: 09/06/23 02 24 25 (15%-85%) 55 (24%-129%) 32 (11%-79%) 71 (39%-112%) 72 (39%-112%) 73 (37%-132%) Esl Concentration Fit Qua/ Date Time: 09/06/23 02 24 Analyst Date Time Prep Batch DG3 09/05/23 1147 2486099 Analyst Comments SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC : Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 51 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms . Kathy Weinel Project: Tailings Characterization Client Sample ID : Sample ID: Matrix: Collect Date: Receive Date: Collector: Cell 4B 635551005 Water 29-AUG-23 10: 15 31-AUG-23 Client Parameter Qualifier Result Uncertainty High Rad Testing Alphaspec Th, Liquid "As Received" Thorium-228 20.5 +/-6.28 Thorium-230 10700 +/-123 Thorium-232 43.4 +/-8.02 GFPC,Total Alpha Radium, Liquid "As Received" Gross Radium Alpha 2030 +/-53.4 Lucas Cell, Ra226, liquid "As Received" Radium-226 3.55 +/-0.358 U-233/234,U-235 /236 and U-238 "As Received" Uranium-233/234 201 +/-6.65 Uranium-235/236 8.69 +/-1.56 Uranium-238 195 +/-6.56 The following Prep Methods were performed: Method Description GL-RAD-A-026 Laboratory Composite The following Analytical Methods were performed: Method Description DOE EML HASL-300, Th-01-RC Modified 2 EPA 903 .0 3 EPA 903 .1 Modified 4 DOE EML HASL-300, U-02-RC Modified Surrogate/Tracer Recovery Test Alphaspec Th, Liquid "As Received" MDC 13.4 13.8 7.26 6.00 0.333 1.67 0.815 1.22 Thorium-229 Tracer Barium Carrier Uranium-232 Tracer GFPC,Total Alpha Radium, Liquid "As Received" U-233/234,U-235/236 and U-238 "As Received" Notes: RL 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Analyst Counting Uncertainty is calculated at the 68% confidence level (I-sigma). Project: Client ID : Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L Date Result VS 1 09/22/23 0751 2496263 HXB2 09/18/23 1613 2488333 2 LXPl 09/24/23 0928 2488334 3 VS I 09/22/2 3 0806 2496264 4 Time Prep Batch 2486541 Analyst Comments Nominal Recovery% 102 110 82.3 Acceptable Limits (15%-125%) (25%-125%) (15%-125%) SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Page 98 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Contact: Project: Client Sample ID : Sample ID: Energy Fuels Resources (USA), Inc . 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Ms . Kathy Weinel Tailings Characterization Cell 4B 635551005 Parameter Qualifier Result Uncertainty MDC Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit RL MDA : Minimum Detectable Activity MDC : Minimum Detectable Concentration SQL: Sample Quantitation Limit Page 99 of 106 SDG: 635551 Project: Client ID : Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address : Energy Fuels Resources (USA), Inc. 225 Union Boulevard Parameter Contact: Project: Client Sample ID : Sample ID : Matrix: Collect Date: Receive Date: Collector: Suite 600 Lakewood, Colorado 80228 Ms. Kathy Weinel Tailings Characterization Cell 4B 635551005 Water 29-AUG-23 10 : 15 31-AUG-23 Client Qualifier Result Hazardous Waste ASTM D 5057 Specific Gravity "As Received" Specific Gravity 1.04 The following Analytical Methods were performed: Method Description ASTMD5057 Notes: DL 0.0100 RL 0.100 Project: Client ID: Report Date: September 28, 2023 DNMI00107 DNMIO0I Units PF DF Analyst Date Time Batch Method none I ES2 09/05 /23 0844 2487026 Analyst Comments SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Column headers are defined as follows: DF : Dilution Factor Le/LC : Critical Level DL : Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration PF : Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 80 of 106 SDG: 635551 An lli,t' 1• Pace Analytical e a1 .1ca -------------------------------- 1673 Terra Avenue Sheridan , WY 82801 ph : (307) 672-8945 Sample Analysis Report CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-D06 Client Sample ID : Cell 4B LOS Analyses General Parameters pH Electrical Conductivity Total Dissolved Solids (180) Alkalinity , Total (As CaCO3) Nitrogen , Ammonia (as N) Anions Alkalin ity , Bicarbonate as HCO3 Alkalinity , Carbonate as CO3 Chloride Fluoride Nitrogen, Nitrate-Nitrite (as N) Sulfate Cations Calcium Magnesium Potass ium Sodium Cation/Anion-Milliequivalents Bicarbonate as HCO3 Carbonate as CO3 Chloride Fluoride Nitrate + Nitrite as N Sulfate Calcium Magnesium Potassium Sodium Cation I Anion Balance Cation Sum Anion Sum Cation-Anion Balance These results apply only to the samples tested. Result 1.7 57900 90500 ND 3940 ND ND 6110 1.0 89.3 52200 606 3270 854 11400 ND ND 172.43 0.05 6.37 1086.49 30.24 268.74 21.84 495.48 1097 .53 1265.36 7.10 RL 0.1 5 10 5 0.1 5 5 258 0.1 0.1 724 2 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 Qual D D Date Reported: 9/26/2023 Report ID : S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 10:30 :00 AM Date Received: 8/31/2023 10:44 :00 AM Sampler: Units s.u. µmhos/cm mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L % Matrix: Water CCC: Date Analyzed/lnit 09/02/2023 13:09 AB 09/02/2023 13:09 AB 09/04/2023 10:23 SKR 09/02/2023 13 :09 AB 09/15/2023 11 :06 AMB 09/02/2023 13 :09 AB 09/02/2023 13 :09 AB 09/11/2023 23:18 AB 09/05/2023 19 :26 AB 09/13/2023 13:33 AMB 09/11/2023 23: 18 AB 09/06/2023 13 :04 DG 09/06/2023 13:04 DG 09/06/2023 13 :04 DG 09/06/2023 13 :04 DG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14:47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14:47 JKG Method SM 4500 H B SM 25108 SM 2540 SM 23208 EPA 350 .1 SM 23208 SM 23208 EPA 300.0 SM 4500FC EPA 353.2 EPA 300 .0 EPA 200 .7 EPA 200 .7 EPA 200.7 EPA 200 .7 SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E Page 11 of 14 ~eAna/yticaf•_P_a_c _e _A _na_ly_t _ic_al __________________________ _ 1-~aCi 1673 Terra Avenue Sheridan, WY 82801 ph: (307) 672-8945 ' CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-006 Client Sample ID: Cell 48 LDS Analyses Dissolved Metals Antimony Arsenic Beryllium Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc These results apply only to the samples tested. Sample Analysis Report Result RL Qual ND 0.05 35.4 0.01 0.506 0.002 1.85 0.002 7.32 0.01 19.4 0.007 314 0.005 1620 0.05 1.2 0.1 179 0.02 ND 0.001 8.48 0.01 36.3 0.01 1.9 0.1 ND 0.05 1.21 0.05 ND 0.02 26.1 0.1 453 0.005 189 0.02 Date Reported: 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 10:30:00 AM Date Received: 8/31/2023 10:44:00 AM Sampler: Matrix: Water COC: Units Date Analyzed/lnit Method mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 15:27 JGU EPA 245.1 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/202313:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 mg/L 09/06/2023 13:04 DG EPA 200.7 Page 12 of 14 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date : September 18 , 2023 Contact: Project: Tailings Characterization Client Sample ID : Cell 4B LDS 635551006 Water Sample ID: Matrix: Collect Date: Receive Date: Collector: Parameter ualifier Result Volatile Organics SW846 8260 Volatiles "As Received" 2-Butanone Acetone Benzene u Carbon tetrachloride u Chloroform Chloromethane Methylene chloride u Naphthalene u Tetrahydrofuran Toluene u Xylenes (total) u Surrogate/Tracer recovery Toluene-dB Bromofluorobenzene 1,2-Dichloroethane-d4 88.7 259 ND ND 35.4 7.00 ND ND 55.5 ND ND 29-AUG-23 10:30 31-AUG-23 Client DL Result 235 ug/L 241 ug/L 272 ug/L 8.34 8.72 1.67 1.67 1.67 1.67 2.50 1.67 8.34 1.67 5 .00 Nominal 50.0 50.0 50.0 Proiect: DNMIO0 107 Client ID : DNMIO0l RL Units PF DF nal st Date Time Batch lethod 25 .0 ug/L 5 PXYI 09/05/23 1652 2487341 25 .0 ug/L 5 5 .00 ug/L 5 5 .00 ug/L 5 5.00 ug/L 5 5 .00 ug/L 5 25 .0 ug/L 5 5 .00 ug/L 5 25 .0 ug/L 5 5 .00 ug/L 5 15 .0 ug/L 5 Recovery% Acceptable Limits Date Time: 09/05/2316 52 94 (77%-121%) 96 (74%-123%) 109 (76%-127%) Tentatively Identified Compound (TIC) CAS No. No Tentatively Identified Compounds Found RT Est. Concentration Fit Qua/ Date Time: 09/05/2316 52 The following Analvtical Methods were performed Method Description Analyst Comments SW846 8260D SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND , the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows : DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC : Minimum Detectable Concentration Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 24 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID: Sample ID: Matrix: Collect Date: Receive Date: Collector: Parameter Qualifier Result Semi-Volatile-GC/MS Cell 4B LDS 635551006 Water 29-AUG-23 10:30 31-AUG-23 Client DL SW846 3510C/8270E SVOA (Separatory Funnel) ''As Received" 1,2,4-Trichlorobenzene u ND 30.0 1,2-Dichlorobenzene u ND 30.0 1,2-Diphenylhydrazine u ND 30.0 1,3-Dichlorobenzene u ND 30.0 1,4-Dichlorobenzene u ND 30.0 1-Methylnaphthalene u ND 3.00 2,4,5-Trichlorophenol u ND 30.0 2,4,6-Trichlorophenol u ND 30.0 2,4-Dichlorophenol u ND 30.0 2,4-Dimethylphenol u ND 30.0 2,4-Dinitrophenol u ND 50.0 2,4-Dinitrotoluene u ND 30.0 2,6-Dinitrotoluene u ND 30.0 2-Chloronaphthalene u ND 4.10 2-Chlorophenol u ND 30.0 2-Methyl-4,6-u ND 30.0 dinitrophenol 2-Methylnaphthalene u ND 3.00 2-Nitrophenol u ND 30.0 3,3'-Dimethylbenzidine u ND 33.0 4-u ND 30.0 Bromophenylphenylethe r 4-Chloro-3-u ND 30.0 methylphenol 4-u ND 30.0 Chlorophenylphenylethe r 4-Nitrophenol u ND 30.0 Acenaphthene u ND 3.00 Acenaphthylene u ND 3.00 Anthracene u ND 3.00 Benzidine u ND 39.0 Benzo( a )anthracene u ND 3.00 Page 52 of 106 SDG: 635551 Report Date: September 27, 2023 Proiect: DNMIO0 107 Client ID: DNMIO0l RL Units PF DF nal yst Date Time Batch Iethod 100 ug/L 0.0100 LL2 09/06/23 0246 2486107 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 200 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 10.0 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 0.0100 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc. Address: 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Report Date : September 27 , 2023 Contact: Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID : Cell 4B LDS Proiect: DNMI00107 Sample ID : 635551006 Client ID: DNMIO0I Parameter Qualifier Result DL RL Units PF DF Analyst Date Time Batch lethod Semi-Volatile-GC/MS SW846 351 0C/82 70£ SVOA (Separatory Funn el) "As Received" Benzo(a)pyrene u ND 3 .00 10 .0 ug/L Benzo(b )fluoranthene u ND 3 .00 10 .0 ug/L 0.0100 Benzo(ghi)perylene u ND 3 .00 10 .0 ug/L 0.0100 Benzo(k)fluoranthene u ND 3.00 10 .0 ug/L 0.0100 Butylbenzylphthalate u ND 3.00 10 .0 ug/L 0.0100 Chrysene u ND 3.00 10.0 ug/L 0.0100 Di-n-butylphthalate u ND 3.00 10.0 ug/L 0.0100 Di-n-octylphthalate u ND 3.00 10 .0 ug/L 0.0100 Dibenzo( a,h )anthracene u ND 3.00 10.0 ug/L 0.0100 Diethylphthalate u ND 3.00 10 .0 ug/L 0.0100 Dimethylphthalate u ND 3.00 10 .0 ug/L 0.0100 Diphenylamine u ND 30 .0 100 ug/L 0 .0100 Fluoranthene u ND 3 .00 10.0 ug/L 0 .0100 Fluorene u ND 3.00 10 .0 ug/L 0.0100 Hexachlorobenzene u ND 30.0 100 ug/L 0.0100 Hexachlorobutadiene u ND 30.0 100 ug/L 0.0100 Hexachlorocyclopentadi u ND 30.0 100 ug/L 0.0100 ene Hexachloroethane u ND 30.0 100 ug/L 0.0100 Indeno( 1,2,3-cd)pyrene u ND 3.00 10 .0 ug/L 0.0100 Isophorone u ND 35.0 100 ug/L 0.0100 N-Methyl -N-u ND 30.0 100 ug/L 0.0100 nitrosomethylamine N-u ND 30.0 JOO ug/L 0.0100 Nitrosodipropylamine Naphthalene u ND 3 .00 10 .0 ug/L 0 .0100 Nitrobenzene u ND 30.0 100 ug/L 0.0100 Pentachlorophenol u ND 30.0 100 ug/L 0 .0100 Phenanthrene u ND 3.00 10 .0 ug/L 0.0100 Phenol u ND 30.0 100 ug/L 0.0100 Pyrene u ND 3.00 10 .0 ug/L 0.0100 Pyridine u ND 30.0 JOO ug/L 0.0100 bis(2-Chloro-I-u ND 30.0 JOO ug/L 0.0100 methylethyl)ether bis(2-u ND 30.0 100 ug/L 0.0100 Chloroethoxy)methane bis(2-Chloroethyl) ether u ND 30.0 100 ug/L 0.0100 bis(2-u ND 3.00 10 .0 ug/L 0.0100 Ethylhexyl)phthalate Page 53 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms . Kathy Weinel Report Date : September 27, 2023 Contact: Project: Tailings Characterization Client Sample ID : Sample ID: Cell 4B LDS 635551006 Proiect: DNMI00107 Client ID: DNMIO0l Parameter Qualifier Result DL RL Units PF DF Analvst Date Time Batch Method Semi-Volatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" m,p-Cresols U ND 37.0 100 100 ug/L 0 .0100 ug/L 0 .0100 o-Cresol U ND 30.0 Surrogate/Tracer recovery Phenol-d5 p-Terphenyl-d 14 N itrobenzene-d5 2-Fluorobiphenyl 2-Fluorophenol 2,4,6-Tribromophenol Result 363 ug/L 402 ug/L 423 ug/L 433 ug/L 489 ug/L 851 ug/L Tentatively Identified Compound (TIC) CAS No. unknown unknown 1 (3 H)-Isobenzofuranone unknown 1,4-Benzenediamine, N,N-diethyl- unknown unknown 000087-41-2 000093-05-0 1-Octanamine, n-octyl-001120-48-5 7 ,9-Di-tert-butyl-1-oxaspiro( 4,5)deca-6,9-flaili!.04-66-3 unknown The followin Pre Methods were erformed Method Description Nominal Recovery% Acceptable Limits (15%-85%) (24%-129%) (39%-112%) (39%-112%) (11%-79%) (37%-132%) 1000 36 500 80 500 85 500 87 1000 49 1000 85 RT Est. Concentration Fit 4 .293 49.3 ug/L 50 4.331 311 ug/L 72 6 .556 59 .5 ug/L 95 6.973 50.4 ug/L 47 7.107 l 14ug/L 98 7.695 44.5 ug/L 55 7.839 43.5 ug/L 78 8.305 60ug/L 93 8.904 56.6ug/L 90 9.332 77.8 ug/L 68 Analyst Date SW846 3510C SW846 3510C Prep Semivolatiles 8270 DG3 09/05 /23 The following Analytical Methods were performed Qua/ J J NJ J NJ J J NJ NJ J Time 1147 Method Description Analyst Comments SW846 3510C/8270E Date Time: 09/06/23 02 46 Date Time: 09/06/23 02 46 Prep Batch 2486099 SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Page 54 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID : Sample ID: Parameter Ouali£ier Result Column headers are defined as follows : DF : Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC : Minimum Detectable Concentration Cell 4B LDS 635551006 DL RL Le/LC : Critical Level PF : Prep Factor RL : Reporting Limit SQL : Sample Quantitation Limit Page 55 of 106 SDG: 635551 Report Date : September 27 , 2023 Proiect: DNMI00107 Client ID : DNMIO0I nits PF DF nal ys t Date Time Batch lethod GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www .gel.com Certificate of Analysis Company : Address: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms . Kathy Weinel Project: Tailings Characterization Client Sample ID: Sample ID: Matrix: Collect Date: Receive Date: Collector: Cell 4B LDS 635551006 Water 29-AUG-23 10:30 31-AUG-23 Client Parameter Qualifier Result Uncertainty High Rad Testing Alphaspec Th, Liquid "As Received" Thorium-228 400 +/-75.6 Thorium-230 l.67E+05 +/-1460 Thorium-232 1020 +/-115 GFPC,Total Alpha Radium, Liquid "As Received" Gross Radium Alpha 14900 +/-139 Lucas Cell, Ra226, liquid "As Received" Radium-226 48 .1 +/-1.42 U-233 /234,U-235/236 and U-238 "As Received" Uranium-233/234 8700 +/-308 Uranium-235/236 414 +/-76.2 Uranium-238 8750 +/-309 The following Prep Methods were performed : Method Description GL-RAD-A-026 Laboratory Composite The following Analytical Methods were performed: Method Description I DOE EML HASL-300, Th-0 I-RC Modified 2 EPA 903 .0 3 EPA 903.1 Modified 4 DOE EML HASL-300, U-02-RC Modified Surrogate/Tracer Recovery Test Alphaspec Th, Liquid "As Received" MDC 96.9 91.9 63.7 7.14 0.556 84.6 64 .5 52.2 Thorium-229 Tracer Barium Carrier Uranium-232 Tracer GFPC ,Total Alpha Radium, Liquid "As Received" U-233 /234 ,U-235/236 and U-238 "As Received" Notes: RL 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Analyst Counting Uncertainty is calculated at the 68% confidence level {I-sigma). Report Date: September 28, 2023 Project: DNMI00107 DNMIO0I Client ID: Units pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L Date Result PF DF Analyst Date Time Batch Method VS I 09/22/23 0751 2496263 HXB2 09/18/23 1624 2488333 2 LXPI 09/24/23 0928 2488334 3 VS I 09/22/23 0806 2496264 4 Time Prep Batch 2486541 Analyst Comments Nominal Recovery% 56.3 110 66.2 Acceptable Limits (15 %-125%) (25%-125%) (15%-125 %) SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Page 100 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www .gel.com Certificate of Analysis Company : Address: Contact: Project: Client Sample ID: Sample ID: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Ms . Kathy Weinel Tailings Characterization Cell 4B LDS 635551006 Parameter Qualifier Result Uncertainty MDC Column headers are defined as follows : DF: Dilution Factor DL : Detection Limit Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit RL MDA: Minimum Detectable Activity MDC : Minimum Detectable Concentration SQL: Sample Quantitation Limit Page 101 of 106 SDG: 635551 Project: Client ID: Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address : Energy Fuels Resources (USA), Inc . 225 Union Boulevard Parameter Contact: Project: Client Sample ID : Sample ID: Matrix: Collect Date: Receive Date: Collector: Suite 600 Lakewood, Colorado 80228 Ms. Kathy Weinel Tailings Characterization Cell4B LDS 635551006 Water 29-AUG-23 10 :30 31-AUG-23 Client Qualifier Result Hazardous Waste ASTM D 5057 Specific Gravity "As Received" Specific Gravity 1.05 The following Analytical Methods were performed: Method Description ASTM D 5057 Notes: DL 0 .0100 RL 0.100 Project: Client ID : Report Date: September 28, 2023 DNM100107 DNMIO0l Units PF DF Analyst Date Time Batch Method none 1 ES2 09/05 /23 0844 2487026 Analvst Comm ents SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC : Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 81 of 106 SDG: 635551 ~eAna/ytica(_P_a_c_e _A_na_ly_t_ic_al __________________________ _ //aCi 1673 Terra Avenue Sheridan , WY 82801 ph : (307) 672-8945 CLIENT: Energy Fuels (White Mesa) 6425 S. Highway 191 Blanding, UT 84511 Project: Lab ID: S2308596-007 Client Sample ID: Cell 65 Analyses General Parameters pH Electrical Conductivity Total Dissolved Solids (180) Alkalinity, Total (As CaCO3) Nitrogen , Ammonia (as N) Anions Alkalinity, Bicarbonate as HCO3 Alkalinity, Carbonate as CO3 Chloride Fluoride Nitrogen, Nitrate-Nitrite (as N) Sulfate Cations Calcium Magnesium Potassium Sodium Cation/Anion-Milliequivalents Bicarbonate as HCO3 Carbonate as CO3 Chloride Fluoride Nitrate + Nitrite as N Sulfate Calcium Magnesium Potassium Sodium Cation/ Anion Balance Cation Sum Anion Sum Cation-Anion Balance These results apply only to the samples tested. Sample Analysis Report Result 2.3 73600 109000 ND 5680 ND ND 10600 3 .0 136 65800 722 3200 1990 19600 ND ND 299 .51 0.15 9.68 1369.18 36 .02 263 .70 50.78 852.03 1608.16 1678.53 2.14 RL 0.1 5 10 5 0.1 5 5 172 0.1 0.1 483 2 0.01 0.01 0.01 0.01 0.01 0.01 0 .01 0.01 0.01 0.01 0.01 0.01 0.01 Qual D D Date Reported: 9/26/2023 Report ID: S2308596002 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 9 :40 :00 AM Date Received: 8/31/2023 10:44:00 AM Sampler: Units s.u . µmhos/cm mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L meq/L % Matrix: Water COC: Date Analyzed/lnit 09/02/2023 13 :14 AB 09/02/2023 13 :14 AB 09/04/2023 10 :26 SKR 09/02/2023 13 :14 AB 09/15/2023 11 :30 AMB 09/02/2023 13 :14 AB 09/02/2023 13:14 AB 09/15/2023 17:35 AB 09/05/2023 19 :30 AB 09/13/2023 13 :35 AMB 09/15/2023 17 :35 AB 09/06/2023 13:06 DG 09/06/2023 13 :06 DG 09/06/2023 13:06 DG 09/06/2023 13 :06 DG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14:47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14 :47 JKG 09/18/2023 14:47 JKG Method SM 4500 H B SM 2510B SM 2540 SM 2320B EPA 350.1 SM 2320B SM 2320B EPA 300 .0 SM 4500FC EPA 353.2 EPA 300.0 EPA 200.7 EPA 200.7 EPA 200.7 EPA 200.7 SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E SM 1030E Page 13 of 14 ~e Ana/ytica(_P_a_c_e_A_n_al_yt_ic_al __________________________ _ ( _/aCi 1673 Terra Avenue Sheridan , WY 82801 ph : (307) 672-8945 Sample Analysis Report CLIENT: Energy Fuels (White Mesa) Date Reported: 9/26/2023 6425 S. Highway 191 Report ID: S2308596002 Blanding, UT 84511 (Replaces S2308596001) Work Order: S2308596 Collection Date: 8/29/2023 9 :40:00 AM Project: Date Received: 8/31/2023 10:44:00 AM Lab ID: S2308596-007 Sampler: Client Sample ID: Cell 65 Matrix: Water COC: Analyses Result RL Qual Units Date Analyzed/lnit Method Dissolved Metals Antimony 0.10 0.05 mg/L 09/06/2023 13:06 DG EPA 200 .7 Arsenic 4.18 0.01 mg/L 09/06/2023 13:06 DG EPA 200 .7 Beryllium 0.315 0.002 mg/L 09/06/2023 13:06 DG EPA 200 .7 Cadmium 3.15 0 .002 mg/L 09/06/2023 13:06 DG EPA 200 .7 Chromium 3.87 0.01 mg/L 09/06/2023 13 :06 DG EPA 200.7 Cobalt 23.4 0.007 mg/L 09/06/2023 13 :06 DG EPA 200 .7 Copper 425 0 .005 mg/L 09/06/2023 13 :06 DG EPA200.7 Iron 700 0.05 mg/L 09/06/2023 13 :06 DG EPA 200 .7 Lead 1.4 0 .1 mg/L 09/06/2023 13 :06 DG EPA 200.7 Manganese 151 0.02 mg/L 09/06/2023 13 :06 DG EPA 200 .7 Mercury 0.001 0.001 mg/L 09/06/2023 15:29 JGU EPA 245 .1 Molybdenum 9.65 0.01 mg/L 09/06/2023 13:06 DG EPA 200.7 Nickel 47.3 0.01 mg/L 09/06/2023 13:06 DG EPA 200.7 Selenium 1.6 0.1 mg/L 09/06/2023 13 :06 DG EPA 200.7 Silver 0.14 0.05 mg/L 09/06/2023 13 :06 DG EPA 200.7 Thallium 0.39 0 .05 mg/L 09/06/2023 13 :06 DG EPA 200 .7 Tin ND 0.02 mg/L 09/06/2023 13 :06 DG EPA 200 .7 Uranium 69.5 0 .1 mg/L 09/06/2023 13 :06 DG EPA 200 .7 Vanadium 101 0.005 mg/L 09/06/2023 13 :06 DG EPA 200.7 Zinc 254 0.02 mg/L 09/06/2023 13 :06 DG EPA 200 .7 These results apply only to the samples tested. Page 14 of 14 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date: September 18 , 2023 Contact: Project: Tailings Characterization Client Sample ID: Cell 65 635551007 Water Sample ID: Matrix: Collect Date: Receive Date: Collector: Parameter Qualifier Result Volatile Organics SW846 8260 Volatiles ''As Received" 2-Butanone u Acetone u Benzene u Carbon tetrachloride u Chloroform u Chloromethane u Methylene chloride u Naphthalene u Tetrahydrofuran u Toluene u Xylenes (total) u Surrogate/Tracer recovery Toluene-d8 Bromofluorobenzene 1,2-Dichloroethane-d4 ND ND ND ND ND ND ND ND ND ND ND 29-AUG-23 09:40 31-AUG-23 Client DL Result 232 ug/L 243 ug/L 269 ug/L 8.34 8.72 1.67 1.67 1.67 1.67 2 .50 1.67 8.34 1.67 5 .00 Nominal 50 .0 50 .0 50.0 Proiect: DNMI00107 Client ID : DNMIO0l RL nits PF OF Ana lyst Date T ime Batch Method 25.0 ug/L 5 PXY I 09 /05 /23 1719 2487341 25.0 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 5.00 ug/L 5 25.0 ug/L 5 5.00 ug/L 5 25.0 ug/L 5 5.00 ug/L 5 15.0 ug/L 5 Recovery% Acceptable Limits Date Time: 09/05/2317 19 93 (77%-121%) 97 (74%-123%) 107 (76%-127%) Tentatively Identified Compound (TIC) CAS No. No Tentatively Identified Compounds Found RT Est Concentration Fit Qua/ Date Time: 09/05/2317 19 The following Analvtical Methods were performed Method Description Analyst Comments SW846 8260D SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows: DF : Dilution Factor DL : Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC: Critical Level PF : Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 25 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc . Address : 225 Union Boulevard Suite 600 Contact: Project: Lakewood, Colorado 80228 Ms. Kathy Weinel Tailings Characterization Client Sample ID : Sample ID : Matrix: Cell 65 635551007 Water Collect Date: Receive Date: 29-AUG-23 09:40 31-AUG-23 Collector: Client Parameter Qualifier Result DL Semi-Volatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" 1,2,4-Trichlorobenzene u ND 30.0 1,2-Dichlorobenzene u ND 30.0 1,2-Diphenylhydrazine u ND 30.0 1 ,3-Dichlorobenzene u ND 30.0 1,4-Dichlorobenzene u ND 30.0 1-Methylnaphthalene u ND 3.00 2,4,5-Trichlorophenol u ND 30.0 2,4,6-Trichlorophenol u ND 30.0 2,4-Dichlorophenol u ND 30.0 2,4-Dimethylphenol u ND 30.0 2,4-Dinitrophenol u ND 50.0 2,4-Dinitrotoluene u ND 30.0 2,6-Dinitrotoluene u ND 30.0 2-Chloronaphthalene u ND 4.10 2-Chlorophenol u ND 30.0 2-Methyl-4,6-u ND 30.0 dinitrophenol 2-Methylnaphthalene u ND 3.00 2-Nitrophenol u ND 30.0 3 ,3 '-Dimethylbenzidine u ND 33.0 4-u ND 30.0 Bromophenylphenylethe r 4-Chloro-3-u ND 30.0 methylphenol 4-u ND 30.0 Chlorophenylphenylethe r 4-Nitrophenol u ND 30 .0 Acenaphthene u ND 3.00 Acenaphthylene u ND 3.00 Anthracene u ND 3.00 Benzidine u ND 39.0 Benzo( a )anthracene u ND 3.00 Page 56 of 106 SDG: 635551 Report Date: September 27, 2023 Proiect: DNMIO0 107 Client ID: DNMIO0I RL Un its PF Df Anah·st Date Time Batch Method 100 ug/L 0.0100 LL2 09/06/23 0309 2486107 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 200 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 100 ug/L 0.0100 10 .0 ug/L 0.0100 10.0 ug/L 0.0100 10.0 ug/L 0.0100 100 ug/L 0.0100 10.0 ug/L 0.0100 0.0100 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Energy Fuels Resources (USA), Inc. Address: 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Report Date: September 27, 2023 Contact: Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID: Cell 65 Proiect: DNMI00107 Sample ID: 635551007 Client ID : DNMIOOl Parameter Qualifier Result DL RL Unit~ PF DF Ana lyst Dat e Time Batch Method Semi-Volatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" Benzo(a)pyrene u ND 3.00 10.0 ug/L Benzo(b )fluoranthene u ND 3 .00 10.0 ug/L 0.0100 Benzo(ghi)perylene u ND 3.00 10.0 ug/L 0 .0100 Benzo(k)fluoranthene u ND 3 .00 10.0 ug/L 0 .0100 Butylbenzylphthalate u ND 3.00 10.0 ug/L 0.0100 Chrysene u ND 3.00 10.0 ug/L 0.0100 Di-n-butylphthalate u ND 3 .00 10.0 ug/L 0.0100 Di-n-octylphthalate u ND 3 .00 10.0 ug/L 0.0100 Dibenzo(a,h)anthracene u ND 3 .00 10.0 ug/L 0.0100 Diethylphthalate u ND 3 .00 10.0 ug/L 0.0100 Dimethylphthalate u ND 3.00 10 .0 ug/L 0 .0100 Diphenylamine u ND 30.0 JOO ug/L 0.0100 Fluoranthene u ND 3.00 10.0 ug/L 0.0100 Fluorene u ND 3.00 10.0 ug/L 0.0100 Hexachlorobenzene u ND 30.0 100 ug/L 0.0100 Hexachlorobutadiene u ND 30.0 JOO ug/L 0 .0100 Hexachlorocyclopentadi u ND 30.0 100 ug/L 0.0100 ene Hexachloroethane u ND 30.0 100 ug/L 0.0100 lndeno(l ,2,3-cd)pyrene u ND 3.00 10.0 ug/L 0.0100 Isophorone u ND 35 .0 100 ug/L 0.0100 N-Methyl-N-u ND 30.0 JOO ug/L 0.0100 nitrosomethylamine N-u ND 30.0 100 ug/L 0.0100 Nitrosodipropylamine Naphthalene u ND 3.00 10.0 ug/L 0.0100 Nitro benzene u ND 30.0 JOO ug/L 0.0100 Pentachlorophenol u ND 30.0 100 ug/L 0.0100 Phenanthrene u ND 3.00 10.0 ug/L 0.0100 Phenol u ND 30.0 100 ug/L 0.0100 Pyrene u ND 3.00 10.0 ug/L 0.0100 Pyridine u ND 30 .0 JOO ug/L 0.0100 bis(2-Chloro-l-u ND 30.0 100 ug/L 0.0100 methylethyl)ether bis(2-u ND 30.0 100 ug/L 0.0100 Chloroethoxy )methane bis(2-Chloroethyl) ether u ND 30.0 100 ug/L 0.0100 bis(2-u ND 3.00 10.0 ug/L 0.0100 Ethylhexyl)phthalate Page 57 of 106 SDG: 635551 Company : Address: GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date : September 27 , 2023 Contact: Project: Tailings Characterization Client Sample ID: Sample ID: Cell 65 635551007 Proiect: DNMI00107 Client ID: DNMIO0l Parameter ualifi er Re ult DL RL Units PF DF Anal ,st Date Time Batch Method Semi-Volatile-GC/MS SW846 35J0C/8270E SVOA (Separatory Funnel) "As Received" m,p-Cresols U ND 37.0 o-Cresol U ND 30 .0 Surrogate/Tracer recovery Result Nominal N itrobenzene-d5 244 ug/L 500 2-Fluorobiphenyl 263 ug/L 500 p-Terphenyl-dl 4 306 ug/L 500 2-Fluorophenol 360 ug/L 1000 Phenol-d5 363 ug/L 1000 2,4,6-Tribromophenol 637 ug/L 1000 Tentatively Identified Compound (TIC) CASNo. RT unknown 4.293 The followin Pre Methods were erformed Method Description SW846 3510C SW846 3510C Prep Semivolatiles 8270 The followin Analvtical Methods were erformed Method Description SW846 3510C/8270E 100 100 ug/L 0.0100 ug/L 0.0100 Recovery% Acceptable Limits 49 (39%-112%) 53 (39%-112%) 61 (24%-129%) 36 (11%-79%) 36 (15%-85%) 64 (37%-132%) Est. Concentration 47.8 ug/L Analyst DG3 Date Fit 72 09 /05/23 Qua/ J Time 1147 Analyst Comments Date Time: 09/06/23 03 09 Date Time: 09/06/23 03 09 Prep Batch 2486099 SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows: DF : Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC : Critical Level PF: Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 58 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Contact: Lakewood, Colorado 80228 Ms. Kathy Weinel Project: Tailings Characterization Client Sample ID : Sample ID: Matrix: Collect Date: Receive Date: Collector: Cell 65 635551007 Water 29-AUG-23 09:40 31-AUG-23 Client Parameter Qualifier Result Uncertainty High Rad Testing Alphaspec Th, Liquid "As Received" Thorium-228 651 +/-62.9 Thorium-230 l.07E+05 +/-793 Thorium-232 1430 +/-91.5 GFPC,Total Alpha Radium, Liquid "As Received" Gross Radium Alpha 9680 +/-110 Lucas Cell, Ra226, liquid "As Received" Radium-226 50.3 +/-1.30 U-233/234,U-235/236 and U-238 "As Received" Uranium-233/234 22100 +/-592 Uranium-235/236 1490 +/-172 Uranium-238 21900 +/-589 The following Prep Methods were perfonned : Method Description GL-RAD-A-026 Laboratory Composite The following Analytical Methods were performed: Method Description l DOE EML HASL-300, Th-01-RC Modified 2 EPA 903.0 3 4 EPA 903.1 Modified DOE EML HASL-300, U-02-RC Modified Surrogate/Tracer Recovery Test Alphaspec Th, Liquid "As Received" MDC 30.2 33.7 20.9 6.59 0.478 86 .6 58.8 47.6 Thorium-229 Tracer Barium Carrier Uranium-232 Tracer GFPC,Total Alpha Radium, Liquid "As Received" U-233/234,U-235/236 and U-238 "As Received" Notes: RL 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Analyst Counting Uncertainty is calculated at the 68% confidence level (I-sigma). Project: Client ID: Report Date: September 28, 2023 DNMIO0I07 DNMIO0I Units PF DF Analyst Date Time Batch Method pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L Date Result VS I 09/22 /23 0751 2496263 HXB2 09/18/23 I 624 2488333 2 LXP I 09/24/23 0928 2488334 3 VS I 09/25/23 0928 2496264 4 Time Prep Batch 2486541 Analyst Comments Nominal Recovery% 97.1 119 56.3 Acce_ptable Limits (15%-125%) (25%-125%) (15%-125%) SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Page 102 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address: Contact: Project: Client Sample ID : Sample ID: Energy Fuels Resources (USA), Inc . 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Ms. Kathy Weinel Tailings Characterization Cell 65 635551007 Parameter Qualifier Result Uncertainty MDC Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit Le/LC: Critical Level PF: Prep Factor RL: Reporting Limit RL MDA: Minimum Detectable Activity MDC : Minimum Detectable Concentration SQL: Sample Quantitation Limit Page 103 of 106 SDG: 635551 Project: Client ID: Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Certificate of Analysis Company : Address : Energy Fuels Resources (USA), Inc . 225 Union Boulevard Parameter Contact: Project: Client Sample ID : Sample ID : Matrix: Collect Date: Receive Date: Collector : Suite 600 Lakewood, Colorado 80228 Ms. Kathy Weinel Tailings Characterization Cell 65 635551007 Water 29-AUG-23 09:40 31-AUG-23 Client Qualifier Result Hazardous Waste ASTM D 5057 Specific Gravity "As Received" Specific Gravity 1.09 The following Analytical Methods were performed: Method .De scription ASTM D 5057 Notes: DL 0.0100 RL 0.100 Project: Client ID: Report Date: September 28, 2023 DNMI00107 DNMIO0l Units PF DF Analyst Date Time Batch Method none I ES2 09/05 /23 0844 2487026 Analyst Comments SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Column headers are defined as follows: .DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC: Minimum Detectable Concentration Le/LC : Critical Level PF : Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 82 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Company : Energy Fuels Resources (USA), Inc. Address : 225 Union Boulevard Suite 600 Certificate of Analysis Lakewood, Colorado 80228 Ms. Kathy Weinel Report Date : September 18 , 2023 Contact: Project: Tailings Characterization Client Sample ID : Sample ID: Matrix: Collect Date : Receive Date: Collector: Parameter OuaJifier Result Volatile Organics SW846 8260 Volatiles "As Received" 2-Butanone u Acetone u Benzene u Carbon tetrachloride u Chloroform u Chloromethane u Methylene chloride u Naphthalene u Tetrahydrofuran u Toluene u Xylenes (total) u Surrogate/Tracer recovery Bromofluorobenzene Toluene-dB l ,2-Di chloroethane-d4 ND ND ND ND ND ND ND ND ND ND ND Result TRIP BLANK 635551008 Water 29-AUG-23 09:40 31-AUG-23 Client DL 1.67 1.74 0.333 0.333 0.333 0.333 0.500 0 .333 1.67 0.333 1.00 RL 5 .00 5.00 1.00 1.00 1.00 1.00 5 .00 1.00 5 .00 1.00 3.00 Nominal Recovery% 45 .8 ug/L 47.1 ug/L 53 .9 ug/L 50.0 92 50.0 94 50.0 108 Proiect: DNMIO0 107 Client ID: DNMIO0l Units PF ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L Acceptable Limits (74%-123%) (77%-121%) (76%-127%) DF Anal ys t Date Time Batch 'lethod PXYl 09/05/23 1405 2487341 Date Time: 09/05/23 14 05 Tentatively Identified Compound (TIC) CAS No. No Tentatively Identified Compounds Found RT Est. Concentration Fit Qua/ Date Time: 09/05/23 14 05 The followin Anal tical Methods were erformed Method Description Analyst Comments SW846 8260D SRL = Sample Reporting Limit. For metals analysis only. When the sample is U qualified and ND, the SRL column reports the value which is the greater of either the adjusted MDL or the CRDL. Notes: Column headers are defined as follows: DF: Dilution Factor DL: Detection Limit MDA: Minimum Detectable Activity MDC : Minimum Detectable Concentration Le/LC: Critical Level PF : Prep Factor RL: Reporting Limit SQL: Sample Quantitation Limit Page 26 of 106 SDG: 635551 A ,f,tf ' 1 • Pace Analytical e na11 .1ca -------------------------------- 1673 Terra Avenue Sheridan , WY 82801 I CLIENT: Energy Fuels (White Mesa) Project: Lab Order: S2308596 Entire Report Reviewed by: 9-'-----e_J.Qo..., Jessica Gillan , Project Manager ph : (307) 672-8945 Date: 9/26/2023 CASE NARRATIVE Report1D:S2308596002 (Replaces S2308596001) Samples Cell 1, Cell 4A, Cell 4A LDS , Cell 48, Cell 48 LDS, Cell 65 and Slimers #2 were received on August 31, 2023. All samples were received and analyzed within recommended holding times, except those noted below in this case narrative . Samples were analyzed using methods outlined in the following references: Standard Methods for the Examination of Water and Wastewater, approved method versions EPA Test Methods for Evaluating Solid Waste , Physical/Chemical Methods , SW-846, online versions EPA methods 40 CFR Parts 136 and 141 EPA 600/2-78-054 methods NDEP Mining Methods 40 CFR Part 50, Appendices B, J , L, 0 and FEM EQL-0310-189 10 Compendium Methods Clean Water Act Methods Update Rule for the Analysis of Effluent, current version. ASTM approved and recognized standards ISO approved and recognized standards USDA Handbook 60 Soil Survey Laboratory Manual Ver 4 .0 ASA/SSSA 9 Methods of Analysis Part 2 , 1982 ASA/SSSA Methods of Analysis Book 5 Part 3, 1996 Other industry approved methods All Quality Control parameters met the acceptance criteria defined by EPA and Pace Analytical except as indicated in this case narrative: Qualifiers by sample S2308596-001 -Anions/Chloride -Report limit raised due to dilution S2308596-001 -Anions/Sulfate -Report limit raised due to dilution S2308596-002 -Anions/Chloride -Report limit raised due to dilution S2308596-002 -Anions/Sulfate -Report limit raised due to dilution S2308596-003 -Anions/Chloride -Report limit raised due to dilution S2308596-003 -Anions/Sulfate -Report limit raised due to dilution S2308596-004 -Anions/Chloride -Report limit raised due to dilution S2308596-004 -Anions/Chloride -Report limit raised due to dilution S2308596-004 -Anions/Sulfate -Report limit raised due to dilution S2308596-004 -Anions/Sulfate -Report limit raised due to dilution S2308596-005 -Anions/Chloride -Report limit raised due to dilution S2308596-005 -Anions/Sulfate -Report limit raised due to dilution S2308596-006 -Anions/Chloride -Report limit raised due to dilution S2308596-006 -Anions/Sulfate -Report limit raised due to dilution S2308596-007 -Anions/Chloride -Report limit raised due to dilution S2308596-007 -Anions/Sulfate -Report limit raised due to dilution S2308596-001 -Dissolved Metals by ICP -EPA 200 .7 -Water/Antimony-RPD outside accepted recovery limits S2308596-001 -Dissolved Metals by ICP -EPA 200.7 -Water/Selenium -RPD outside accepted recovery limits S2308596-001 -Dissolved Metals by ICP -EPA 200.7 -Water/Thallium -RPO outside accepted recovery limits Page 1 of 3 ,} An 1,.,r ,• Pace Analytical /Jace a1 ,1ca -------------------------------- , 1673 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 Date: 9/26/2023 S2308596-002 -Cations by ICP (Method 200. 7)/Magnesium -Spike Recovery outside accepted recovery limits S2308596-002 -Dissolved Metals by ICP -EPA 200.7 -Water/Cobalt-Spike Recovery outside accepted recovery limits S2308596-002 -Dissolved Metals by ICP -EPA 200. 7 -Water/Copper -Spike Recovery outside accepted recovery limits S2308596-002 -Dissolved Metals by ICP -EPA 200.7 -Water/Iron -Spike Recovery outside accepted recovery limits S2308596-002 -Dissolved Metals by ICP -EPA 200.7 -Water/Manganese -Spike Recovery outside accepted recovery limits S2308596-002 -Dissolved Metals by ICP -EPA 200.7 -Water/Nickel -Spike Recovery outside accepted recovery limits S2308596-002 -Dissolved Metals by ICP -EPA 200.7 -Water/Silver-Spike Recovery outside accepted recovery limits S2308596-002 -Dissolved Metals by ICP -EPA 200.7 -WaterNanadium -Spike Recovery outside accepted recovery limits S2308596-002 -Dissolved Metals by ICP -EPA 200.7 -Water/Zinc -Spike Recovery outside accepted recovery limits S2308596-004 -Nitrogen, Ammonia (as N)/Nitrogen, Ammonia (as N) -Spike Recovery outside accepted recovery limits S2308596-005 -Nitrogen, Nitrate-Nitrite (as N)/Nitrogen, Nitrate-Nitrite (as N) -Spike Recovery outside accepted recovery limits This replaces S2308596001 to included Tin on all samples per client request. Page 2 of3 ~eAna/yticaJ•_P_a_c_e_A_n_a _lyt_ic_a_l ___________________________ _ ( _/aCi 1673 Terra Avenue Sheridan , WY 82801 ph : (307) 672-8945 Definitions RL Reporting Limit * A B C D E G H J L M N ND 0 p R s u X Qualifiers Value exceeds Maximum Contam inant Level Check MSA specifications Analyte detected in the associated Method Blank Calculated Value Report limit raised due to dilution Value above quantitation range Analyzed at Pace Gillette, WY laboratory Holding times for preparation or analysis exceeded Analyte detected below quantitation limits Analyzed by another laboratory Value exceeds Monthly Ave or MCL or is less than LCL Sample analyzed outside of compliance requirements Not Detected at the Reporting Limit Outside the Range of Dilutions Sample preserved in lab at time of receipt RPD outside accepted recovery limits Spike Recovery outside accepted recovery limits Analyte below method detection limit Matrix Effect Date: 9/26/2023 Page 3 of3 An /, 11 ,. 1 • Pace Analytical e a1 ,1ca ------------------------------- 1513 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 ANALYTICAL QC SUMMARY REPORT CLIENT: Energy Fuels (White Mesa) Date: 9/26/2023 Work Order: S2308596 Report ID: S2308596002 Proje ct : (Replaces S2308596001) Alkalin ity Sample Type : MBLK Units: mg/L BLANK (09/02/23 10:18) RunNo: 213795 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Alkalinity, Bicarbonate as HC03 ND 5 Alkalinity, Carbonate as C03 ND 5 Alkalinity, Total (As CaC03) ND 5 Alkalinity Sample Type: LCS Units: mg/L ATQC (09/06/23 12:37) RunNo:213867 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Alkalinity, Total (As CaC03) 634 5 595 107 90 -110 Alkalinity Sample Type : DUP Units: mg/L S2308596-007AD (09/02/2313 :18) RunNo : 213795 Analyte Result RL Ref Samp %RPO %REC % RPO Limits Qual Alkalinity, Bicarbonate as HC03 ND 5 ND 20 Alkalinity, Carbonate as C03 ND 5 ND 20 Alkalinity, Total (As CaC03) ND 5 ND 20 S2308596-007AD (09/05/23 19:35) RunNo: 213867 Analyte Result RL Ref Samp %RPO %REC % RPD Limits Qual Alkalinity, Bicarbonate as HC03 ND 5 ND 20 Alkalinity, Carbonate as C03 ND 5 ND 20 Alkalinity, Total (As CaC03) ND 5 ND 20 Cond uctivity by SM2510B Sample Type : MBLK Units : µmhos/cm BLANK (09/02/23 10 :18) RunNo: 213795 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Electrical Conductivity ND 5 Conductivity by SM251 OB Sam ple Type: LCS Units: µmhos/cm ATQC (09/06/23 12:37) RunNo: 213867 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Electrical Conductivity 1000 5 1060 94.5 Conductivity by SM2510B Sample Type : DUP Units: µmhos/cm S2308596-007 AD (09/02/23 13: 18) RunNo: 213795 Analyte Result RL Ref Samp %RPO %REC % RPO Limits Qual Electrical Conductivity 73300 5 73600 0.408 20 S2308596-007AD (09/05/23 19:35) RunNo: 213867 Analyte Result RL Ref Samp %RPO %REC % RPD Limits Qual Electrical Conductivity ND 5 ND 20 Page 1 of 9 , Pace Analytical aceAnalyticaf--------------------------- 1613 Terra Avenue Sheridan , WY 82801 ph: (307) 672-8945 ANALYTICAL QC SUMMARY REPORT CLIENT: Energy Fuels (White Mesa) Date: 9/26/2023 Work Order: S2308596 Report ID: S2308596002 Project: (Replaces S2308596001) Dissolved Mercury by EPA 245.1 -Water Sample Type: MBLK Units : mg/L MB (09/06/23 13 :30) RunNo : 213904 Analyte Result RL Spike Ref Samp ¾REC % Rec Limits Qua! Mercury ND 0.001 Dissolved Mercury by EPA 245.1 -Water Sample Type : LCS Units: mg/L LCS (09/06/23 17:49) RunNo :213904 Analyte Result RL Spike Ref Samp ¾REC % Rec Limits Qua! Mercury 0.005 0.001 0.005 102 85 -115 Dissolved Mercury by EPA 245.1 -Water Sample Type: MS Units : mg/L S2308596-002BS (09/06/23 15:16) RunNo: 213904 Analyte Result RL Spike Ref Samp ¾REC % Rec Limits Qua! Mercury 0.005 0.001 0.005 ND 94.0 70 -130 Dissolved Mercury by EPA 245.1 -Water Sample Type: MSD Units: mg/L S2308596-0028S0 (09/06/23 15:18) RunNo: 213904 Analyte Result RL Cone ¾RPO ¾REC % RPO Limits Qual Mercury 0.004 0.001 0.005 4.47 89.9 20 Dissolved Mercury by EPA 245.1 -Water Sample Type: DUP Units: mg/L S2308596-002B0 (09/06/23 15:14) RunNo : 213904 Analyte Result RL Ref Samp ¾RPO ¾REC % RPO Limits Qua! Mercury ND 0.001 ND 20 Page 2 of9 I ;2o An 1~ . 1• Pace Analytical e a ,ca 1673 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 ANALYTICAL QC SUMMARY REPORT CLIENT: Energy Fuels (White Mesa) Date: 9/26/2023 Work Order: S2308596 Report ID: S2308596002 Project: (Replaces S2308596001) Dissolved Metals by ICP -EPA 200.7 -Water Sample Type : MBLK Units : mg/L MBLK DISS/CAT (09/06/23 11 :29) RunNo : 213888 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Antimony ND 0.05 Arsenic ND 0.01 Beryllium ND 0.002 Cadmium ND 0.002 Chromium ND 0.01 Cobalt ND 0.007 Copper ND 0.005 Iron ND 0.05 Lead ND 0.1 Manganese ND 0.02 Molybdenum ND 0.01 Nickel ND 0.01 Selenium ND 0.1 Silver ND 0.05 Thallium ND 0.05 Uranium ND 0.1 Vanadium ND 0.005 Zinc ND 0.02 MBLK DISS/CAT (09/06/23 11 :29) RunNo: 214506 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Tin ND 0.02 Dissolved Metals by ICP -EPA 200.7 -Water Sample Type : LCS Units : mg/L DISS LCS (09/06/2311:31) RunNo:213888 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Antimony 1.02 0.05 102 85 -115 Arsenic 1.00 0.01 99.5 85 -115 Beryllium 1.03 0.002 103 85 -115 Cadmium 0.994 0.002 99.4 85 -115 Chromium 1.02 0.01 102 85 -115 Cobalt 0.997 0.007 99.7 85 -115 Copper 0.977 0.005 97.7 85 -115 Iron 1.01 0.05 101 85 -115 Lead 1.0 0.1 102 85 -115 Manganese 1.01 0.02 101 85 -115 Molybdenum 1.05 0.01 105 85 -115 Nickel 1.03 0.01 103 85 -115 Selenium 1.0 0.1 1 102 85 -115 Silver 1.00 0.05 1 99.6 85 -115 Thallium 1.03 0.05 103 85 -115 Uranium 1.0 0.1 100 85 -115 Vanadium 1.00 0.005 100 85 -115 Zinc 1.02 0.02 102 85 -115 DISS LCS (09/06/23 11 :31) RunNo : 214506 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Tin 1.02 0.02 102 85 -115 Page 3 of 9 ;tlce AnJ/ytica!' Pace Analytical 1673 Terra Avenue Sheridan , WY 82801 ph: (307) 672-8945 ANALYTICAL QC SUMMARY REPORT CLIENT: Energy Fuels (White Mesa) Date: 9/26/2023 Work Order: S2308596 Report ID: S2308596002 Project: (Replaces S2308596001) Dissolved Metals by ICP -EPA 200.7 -Water Sample Type : MS Units: mg/L S2308596-002BS (09/06/23 12:48) RunNo : 213888 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Antimony 19 .1 0.05 25.2 0.12 75.2 70 -130 Arsenic 41 .5 0.01 25 .2 22 .2 76.5 70 -130 Beryllium 26 .2 0.002 25 .2 0.395 102 70 -130 Cadmium 32.4 0.002 25.2 7.56 98 .5 70 -130 Chromium 26 .7 0.01 25.2 2.59 95.6 70 -130 Cobalt 65.4 0.007 25.2 51.6 54.7 70 -130 s Copper 109 0.005 25 .2 104 22.5 70 -130 s Iron 2470 0.05 25.2 2930 -1820 70 -130 s Lead 23 .5 0.1 25.2 0.4 91 .4 70 -130 Manganese 135 0.02 25.2 137 -8.06 70 -130 s Molybdenum 29.2 0.01 25 .2 4.54 97.7 70 -130 Nickel 135 0.01 25.2 139 -13.5 70 -130 s Selenium 23 .5 0.1 25 .2 0.3 92 .1 70 -130 Silver 17 .2 0.05 25 .2 ND 67.9 70 -130 s Thallium 26.3 0.05 25.2 1.82 97.1 70 -130 Uranium 44.4 0.1 25.2 24 .8 77.4 70 -130 Vanadium 384 0.005 25.2 438 -213 70 -130 s Zinc 690 0.02 25 .2 828 -547 70 -130 s S2308596-002BS (09/06/23 12:48) RunNo : 214506 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Tin 24.5 0.02 25.2 ND 97.0 70 -130 Dissolved Metals by ICP -EPA 200.7 -Water Sample Type: MSD Units: mg/L S2308596-002BSD (09/06/23 12 :50) RunNo : 213888 Analyte Result RL Cone %RPO %REC % RPO Limits Qual Antimony 20 .9 0.05 19.1 8.82 82.2 20 Arsenic 42 .0 0.01 41.5 1.20 78.5 20 Beryllium 26.4 0.002 26.2 1.02 103 20 Cadmium 32 .7 0.002 32.4 0.897 99 .7 20 Chromium 27 .0 0.01 26 .7 1.15 96.8 20 Cobalt 65 .9 0.007 65.4 0.741 56.7 20 s Copper 109 0.005 109 0.0466 22.7 20 s Iron 2480 0.05 2470 0.432 -1780 20 s Lead 23 .5 0.1 23 .5 0.162 91 .6 20 Manganese 135 0.02 135 0.538 -5.18 20 s Molybdenum 29 .8 0.01 29.2 1.88 99.9 20 Nickel 137 0.01 135 0.884 -8.70 20 s Selenium 23 .8 0.1 23.5 1.02 93.1 20 Silver 16.4 0.05 17.2 4.48 65.0 20 s Thallium 26 .3 0.05 26 .3 0.254 96.8 20 Uranium 45 .0 0.1 44.4 1.33 79.7 20 Vanadium 386 0.005 384 0.671 -203 20 s Zinc 698 0.02 690 1.06 -518 20 s S2308596-002BSD (09/06/23 12:50) RunNo : 214506 Analyte Result RL Cone %RPO %REC % RPO Limits Qual Tin 24 .9 0.02 24.5 1.50 98.4 20 Page 4 of 9 /Z Ana/yticaJ' Pace Analytical 1673 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 ANALYTICAL QC SUMMARY REPORT CLIENT: Energy Fuels (White Mesa) Date: 9/26/2023 Work Order: S2308596 Report ID: S2308596002 Project: (Replaces S2308596001) Dissolved Metals by ICP -EPA 200.7 -Water Sample Type : DUP Units : mg/L S2308596-001 BO (09/06/23 12 :44) RunNo : 213888 Analyte Result RL Ref Samp %RPO %REC % RPO Limits Qual Antimony 0.18 0.05 0.08 75.7 20 R Arsenic 97.8 0.01 110 12.0 20 Beryllium 0 .697 0.002 0.788 12 .2 20 Cadmium 3 .56 0.002 4.03 12 .5 20 Chromium 5.66 0.01 6.49 13.7 20 Cobalt 18.3 0.007 20.6 11 .6 20 Copper 565 0.005 640 12.5 20 Iron 1520 0.05 1710 11.6 20 Lead 10 .8 0.1 11.8 9 .32 20 Manganese 220 0 .02 248 12 .0 20 Molybdenum 78.4 0.01 87.9 11.4 20 Nickel 20 .3 0 .01 22 .9 11.9 20 Selenium 2 .1 0.1 2 .7 22 .3 20 R Silver 0.34 0.05 0.38 11 .1 20 Thallium 1.48 0.05 1.88 23 .5 20 R Uranium 104 0.1 11 B 12 .7 20 Vanadium 591 0.005 665 11.8 20 Zinc 196 0.02 221 12 .2 20 S2308596-001 BO (09/06/23 12 :44) RunNo : 214506 Anafyte Result RL Ref Samp %RPO %REC % RPO Limits Qual Tin 0.03 0.02 0.05 72.8 20 R Fluoride by SM 4500 Sample Type : MBLK Units : mg/L BLANK (09/05/23 15 :39) RunNo : 213867 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Fluoride ND 0.1 Fluoride by SM 4500 Sample Type : LCS Units : mg/L ATQC (09/06/23 12:37) RunNo : 213867 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Fluoride 3.0 0 .1 3 101 85 -115 Fluoride by SM 4500 Sample Type : MS Units: mg/L S2309002-004ASPK MS (09/06/23 01 :38) RunNo : 213867 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Fluoride 4.0 0.1 2.5 1.1 117 80 -120 Fluoride by SM 4500 Sample Type : MSD Units : mg/L S2309002-004ASPK MSD (09/06/23 01 :42) RunNo : 213867 Analyte Result RL Cone %RPO %REC % RPO Limits Qual Fluoride 3.8 0.1 4.0 5.24 108 20 Fluoride by SM 4500 Sampl e Type : DUP Units : mg/L S2308596-007 AD (09/05/23 19:35) RunNo: 213867 Anafyte Result RL Ref Samp %RPO %REC % RPO Limits Qua! Fluoride 3.1 0.1 3.0 1.41 20 Page 5 of 9 ~ An lyti . 1, Pace Analytical e a 1ca 1673 Terra Avenue Sheridan , WY 82801 ph : (307) 672-8945 I ANALYTICAL QC SUMMARY REPORT CLIENT: Energy Fuels (White Mesa) Date: 9/26/2023 Work Order: S2308596 Report ID: S2308596002 Project: (Replaces S2308596001) Anions by ION C hromatography Sample Type : MBLK Units : mg/L BLK (09/11 /23 17 :34) RunNo : 214023 Analyte Result RL Spike Ref Samp %REC % Rec Lim its Qual Chloride ND Sulfate ND Anions by ION Chromatography Sample Type : LCS Units : mg/L LCS 1 (09/15/23 12:34) RunNo: 214224 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Chloride 5 4.76 99.0 90 -110 Sulfate 35 35 .7 97.3 90 -110 LCS 2 (09/15/23 16:53 ) RunNo : 214224 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Chloride 5 1 4 .76 97 .5 90 -110 Sulfate 34 1 35.7 95 .2 90 -110 LCS 3 (09/15/23 21 :11) RunNo : 214224 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Chloride 5 4.76 101 90 -110 Sulfate 35 35 .7 98.1 90 -110 LCS 4 (09/16/23 01 :30) RunNo : 214224 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Chloride 5 4.76 97 .6 90 -110 Sulfate 34 35 .7 95 .0 90 -110 LCS 5 (09/16/23 05 :48) RunNo : 214224 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Chloride 5 4 .76 97.6 90 -110 Sulfate 34 35.7 94.8 90 -110 Anions by ION Ch romatography Sample Type: MS Units : mg/L S2308596-007 ASPK (09/11 /23 23 :43) RunNo : 214023 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Chloride 24600 258 14300 9640 104 80 -120 0 Sulfate 173000 724 107000 58200 107 80 -120 0 Anions by ION Ch romatography Sample Type : MSD Units : mg/L S2308596-007 AS PKO (09/11 /23 23 :52) RunNo : 214023 Analyte Result RL Cone %RPO %REC % RPO Limits Qual Chloride 24600 258 24600 0.244 105 20 0 Sulfate 173000 724 173000 0.152 107 20 0 Anions by ION Chromatography Sample Type: DUP Units : mg/L S2308596-007AO (09/11/23 23 :35) RunNo : 214023 Analyte Result RL Ref Samp %RPO %REC % RPO Limits Qual Chlori de 9660 258 9640 0.156 20 0 Sulfate 58100 724 58200 0.0790 20 0 Page 6 of9 ;t2eAnalftica/' Pace Analytical 1673 Terra Avenue Sheridan , WY 82801 ph : (307) 672-8945 ' ANALYTICAL QC SUMMARY REPORT CLIENT: Energy Fuels (White Mesa) Date: 9/26/2023 Work Order: S2308596 Report ID: S2308596002 Project: (Replaces S2308596001) Cations by ICP (Method 200.7) Sample Type : MBLK Units : mg/L MBLK DISS/CAT (09/15/2314 :10) RunNo : 214209 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Calcium ND Magnesium ND Potassium ND Sodium ND 2 Cations by ICP (Method 200.7) Sample Type: LCS Units: mg/L DISS LCS (09/15/23 14 :12) RunNo: 214209 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Calcium 41 41 99 .2 85 -115 Magnesium 40 41 96 .7 85 -115 Potassium 40 41 96 .6 85-115 Sodium 40 2 41 98 .5 85 -115 Cations by ICP (Method 200.7) Sample Type : MS Un its : mg/L S2308596-002AS (09/06/23 12 :48) RunNo : 213886 Anaiyte Result RL Spike Ref Samp %REC % Rec Limits Qual Calcium 3220 2780 595 94.5 70 -130 Magnesium 5840 2780 3920 69.0 70 -130 s Potassium 3410 2780 799 94.0 70 -130 Sodium 7070 2 2780 5080 71.9 70 -130 Cations by ICP (Method 200.7) Sample Type : MSD Units : mg/L S2308596-002ASO (09/06/23 12 :50) Run No : 213886 Analyte Result RL Cone %RPO %REC % RPO Limits Qual Calcium 3250 3220 0.934 95.6 20 Magnesium 5890 5840 0.909 71.0 20 Potassium 3450 3410 1.12 95.3 20 Sodium 7140 2 7070 1.01 74.4 20 Cations by ICP (Method 200.7) Sample Type : DUP Units : mg/L S2308596-001AO (09/06/23 12 :44) RunNo : 213886 Anaiyte Result RL Ref Samp %RPO %REC % RPO Limits Qual Calcium 301 341 12 .5 20 Magnesium 3930 4440 12 .3 20 Potassium 1290 1 1470 12 .6 20 Sodium 15600 2 17700 12.6 20 Page 7 of 9 ~eAna/ytica(_P_a_c_e_A_n_al_yt_ic_al __________________________ _ ( /dl,I 1673 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 I ANALYTICAL QC SUMMARY REPORT CLIENT: Energy Fuels (White Mesa) Date: 9/26/2023 Work Order: S2308596 Report ID: S2308596002 Project: (Replaces S2308596001) Nitrogen, Ammonia (as N) Sample Type : MBLK Units: mg/L WCB (09/15/2310:19) Run No : 214189 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Nitrogen, Ammonia (as N) ND 0.1 Nitrogen , Ammonia (as N) Sample Type : LCS Units : mg/L ICV1 (09/15/23 10:33) RunNo: 214189 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Nitrogen, Ammonia (as N) 2.5 0.1 2.5 99.5 90 -110 Nitrogen , Ammonia (as N) Sample Type: MS Units : mg/L S2308596-004C (09/15/23 10 :32) RunNo: 214189 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Nitrogen, Ammonia (as N) 1510 0.1 2.5 1470 1650 90 -110 s Nitrogen, Ammonia (as N) Sample Type: MSD Units : mg/L S2308596-004C (09/15/23 10:32) RunNo:214189 Analyte Result RL Cone %RPO %REC % RPO Limits Qual Nitrogen, Ammonia (as N) 1450 0.1 1510 3.84 -619 20 s Nitrogen, Ammonia (as N) Sample Type: DUP Units: mg/L S2308596-005C (09/15/23 11 :11) RunNo: 214189 Analyte Result RL Ref Samp %RPO %REC % RPO Limits Qual Nitrogen , Ammonia (as N) 3590 0.1 3450 3.79 20 S2308596-007C (09/15/23 11 :31) RunNo : 214189 Analyte Result RL Ref Samp %RPO %REC % RPO Limits Qual Nitrogen , Ammonia (as N) 5520 0.1 5680 2.88 20 Nitrogen, Nitrate-Nitrite (as N) Sample Type: MBLK Units : mg/L MBLK (09/13/23 12:18) RunNo: 214102 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Nitrogen, Nitrate-Nitrite (as N) ND 0.1 Nitrogen, Nitrate-Nitrite (as N) Sample Type: LCS Units : mg/L ICV (09/13/23 12 :22) RunNo: 214102 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Nitrogen, Nitrate-Nitrite (as N) 2.6 0.1 2.5 104 90 -110 Nitrogen , Nitrate-Nitrite (as N) Sample Type : MS Units : mg/L S2308596-005C (09/08/23 15 :35) RunNo: 213960 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Nitrogen , Nitrate-Nitrite (as N) 2.9 0.1 2.5 0.7 86.2 90 -110 s Nitrogen, Nitrate-Nitrite (as N) Sample Type: MSD Units: mg/L S2308596-005C (09/08/23 15 :37) RunNo: 213960 Analyte Result RL Cone %RPO %REC % RPO Limits Qual Nitrogen, Nitrate-Nitrite (as N) 2 .8 0.1 2.9 2 .14 83.7 20 s Page 8 of 9 ~Ana/yticaf'-P_a_c_e_A_na_l_yt _ica_l __________________________ _ ( /aCI 1673 Terra Avenue Sheridan, WY 82801 ph : (307) 672-8945 ANALYTICAL QC SUMMARY REPORT CLIENT: Energy Fuels (White Mesa) Date: 9/26/2023 Work Order: S2308596 Report ID: S2308596002 Project: (Replaces S2308596001) Solids By SM 2540 Sample Type: MBLK Units : mg/L DI {09/04/23 09 :38) RunNo : 213905 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Total Dissolved Solids (180) ND 10 Solids By SM 2540 Sample Type : LCS Units : mg/L CONTROL (09/04/23 09 :41) RunNo: 213905 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual Total Dissolved Solids (180) 2510 10 2320 108 90 -110 Solids By SM 2540 Sample Type : DUP Units : mg/L S2309001-007A (09/04/23 10 :56) Run No : 213905 Analyte Result RL Ref Samp %RPO %REC % RPO Limits Qual Total Dissolved Solids (180) 2020 10 2030 0.197 10 pH Water by SM 4500 H B Sample Type : LCS Units : s.u. ATQC (09/06/23 02 :18) RunNo : 213867 Analyte Result RL Spike Ref Samp %REC % Rec Limits Qual pH 8.8 0.1 8.6 102 90 -110 pH Water by SM 4500 H B Sample Type : CUP Units : s.u. S2308596-007 AD (09/02/23 13: 18) RunNo: 213795 Analyte Result RL Ref Samp %RPO %REC % RPO Limits Qual pH 2 .3 0 .1 2.3 0 .316 20 S2308596-007 AD (09/05/23 19:35) RunNo : 213867 Analyte Result RL Ref Samp %RPO %REC % RPO Limits Qual pH ND 0.1 ND 20 Page 9 of9 Sheet 1 of 1 CHAIN OF CUSTODY Samples Shipped to: _P_a_c_e_-_W~y~ _________ Contact: Kathy Weinel 1673 Terra Ave Ph: 303 .389.4134 Sheridan, WY 82801 kwei ne l@energyfuels .com 307-461-4940 Chain of Custody/Sampling Analysis Request Project Samplers Name Samplers Signature Annual Tails 2023 Tanner Holliday l~aMMi//// ~ / Time Sample ID Date Collected Collected Laboratory Analysis Requested Cell 1 8/29/2023 835 00141983 ] a ]Df f "ff -o I Slimes #2 8/29/2023 855 00141983 -C>/J. Cell 4A 8/29/2023 940 00141983 -"-') --------Cell 4A LOS 8/29/2023 1000 00141983 -.x-< Cell 4B 8/29/2023 1015 00141983 -i)j ~ Cell 4B LOS 8/29/2023 1030 00141983 -o-:,£ Cell 65 8/29/2023 940 00141983 -lfa '7 Dissolved Metals samples are 200.7/200.8. Dissolved Metals Samples are NOT field filtered. Samples must be filtered by the laboratory upon receipt. The metals samples are not preserved. The pH is as sampled (and likely acidic ). Comments: Please send report to Kathy Weinel at kweinel@energyfuels.com and Tanner Holliday at nholliday@energyfuels.com Relinquished By J ~ignature ;Ja.NLU(_rtt Date/Time Re ceived By;z.(Si nature) 8/30/2023 K..l.-t -~ 1130 ,J/ t'"'-- Date/Time f/]I /J J I uL( L( Relinquished By:(S ignature) Date/Time Received By:(Signature) Date/Time DC#_ Title: ENV-FRM-SHRT-0033 v02_Condition Upon Receipt Form Terra Lab Effective Date: 4/2412023 Survey Meter# Model 2241-2; SN 182119 pH strip lot # HC312502 Thermometer SN#""2""11""3-"'o;;.;47c.;5=------ Conditlon Upon Receipt {Attach to COC) Sample Repaint 1 Number of Ice chests/packages received: ROI?~ Note as "OTC" If samples are received over the counter, unpackeged C7 1 No 2 Temperature of cooler/sam les . lfmora than B coolers, obtain an additional CUR form. Temps Observed ( 0 C):-----u----11-----i1...-----il...------1:1-----11----~1----____. Temps Corrected (°C): ................................... ______ __........_ __ __........_ __ ___......._ __ ........... ___ ......._ ___ __. Acceptable Is: 0.1• lo 1o•c for Bacteria; and 0. 1• to 6°Cfor most other WIiier parameters. Samples may not have had adequate time to cool following collection. Indicate ROI (Received on Ice) for Iced samples received on the same day as sampled, In add/Uon to temperature at receipt. Cllent contact for temperatures outside method criteria must be documented below. 3 Emission rate of samples for radiochemical analyses < 0.5mR/hr? 4 CCC Number (If applicable): 5 Do the number of bottles agree with the CCC? 6 Were the samples received Intact? (no broken bottles, leaks, etc.) 7 Were the sample custody seals intact? Yes ® ~ No ~ No No No NIA NIA NIA 8 Is the CCC properly completed, legible, and signed? sample VerlfJcatJon. LabeJlnq & Qlstr jbutlon 0~ '41 ]/f.<.:J (NP ~ ,,.~JI( lo t...1e IJ Were all requested analyses understood and appropriate? 2 Did the bottle labels correspond with the CCC information? 3 Samples collected in method-prescribed containers? ®> ~ 4 Sample Preservation: pH at Receipt: Final pH (if added in lab): Preservative/Lot# /( II, __ Total Melals J ':J L Diss Metals ~Nutnent Tola! Metals Diss Meta ls Nutrient HN03 ______ _ FIitered and preserved in metels __ Cyanide Sulfide Phenol SOWA Rads __ Cyanide Sulfide Phenol SOWA Rads 5 VOA vials have <6mm headspace? H,so. ______ _ NaOH ______ _ ZnAcet ______ _ H2S04 ______ _ HN03 ______ _ Yes 6 Were all analyses within holding time at the time of receipt? ~ No No No No No 7 Have rush or project due dates been checked and accepted? Yes No 8 Do samples require subcontracted analyses? Yes @ 111 ~htf t1>.1-fte,J J/~.t. f, .. 1-t.,.,..J/¼ ~~-~++ ~ Date/Time Added: ffW FIitered and prese,yed in metals Certified If "Yes•, which type of subcontracting is required? General Customer-Specified Sample Rece ipt, Verification, Login, Labeling & Distribution completed by (In itials}: PJ /J:J Set ID: _.r_1_.r0 __ 1 ...... 1 ...... '/.-=t, __ _ Discrepancy Documentation fuse back of sheet for notes on discrepancies) Any Items listed above with a response of "No" or do not meet specifications must be resolved. Person Contacted: ____________ Method of Contact: Phone: _________ _ Initiated By: Date/Time:________ Email: Problem: Resolution: Quaitrax ID: 70962 Pace® Analytical Services, LLC Page 1 of 1 e [ij 3 !I Laboratories LLc a member of The GEL Group INC 2040 Savage Road I Charle ston . SC 29407 843 556 8171 September 28, 2023 Ms. Kathy Weinel Energy Fuels Resources (USA), Inc . 225 Union Boulevard Suite 600 Lakewood, Colorado 80228 Re: Tailings Characterization Work Order: 635551 Dear Ms. Weinel : GEL Laboratories , LLC (GEL) appreciates the opportunity to provide the enclosed analytical results for the sample(s) we received on August 31, 2023. This original data report has been prepared and reviewed in accordance with GEL's 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 ofGEL's 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. 4289 . Purchase Order: DW16138 Enclosures Sincerely Jordan Melton for Julie Robinson Project Manager II II II I I I I I 111111111111111 gel.com September 28, 2023 ab rator Identification: GEL Laboratories LLC 2040 Savage Road Charleston, South Carolina 29407 (843) 556-8171 Summary: Receipt Narrative for Energy Fuels Resources (USA), Inc. SDG: 635551 Sample receipt: The samples arrived at GEL Laboratories LLC, Charleston, South Carolina on August 31, 2023 for analysis. The samples were delivered with proper chain of custody documentation and signatures. All sample containers arrived without any visible signs of tampering or breakage. There are no additional comments concerning sample receipt. Sample Identification: The laboratory received the following samples: Laboratory ID Client ID 635551001 Cell 1 635551002 Slimes #2 635551003 Cell 4A 635551004 Cell 4A LDS 635551005 Cell 4B 635551006 Cell 4B LDS 635551007 Cell 65 635551008 TRIP BLANKS Case Narrative: Sample analyses were conducted using methodology as outlined in GEL's Standard Operating Procedures. Any technical or administrative problems during analysis, data review, and reduction are contained in the analytical case narratives in the enclosed data package. Page 2 of 106 SDG: 635551 The enclosed data package contains the following sections: Case Narrative, Chain of Custody, Cooler Receipt Checklist, Data Package Qualifier Definitions and data from the following fractions: General Chemistry, Radiochemistry, GC/MS Volatile and GC/MS Semivolatile. Page 3 of 106 SDG: 635551 Jordan Melton for Julie Robinson Project Manager Sheet 1 of 1 CHAIN OF CUSTODY Samples Shipped to: Gel Laboratories Contact: Tanner Holliday ------------2040 Savage Road Ph: 435 678 4115 Charleston, SC 29407 tho lliday@enerqyfuels .com Project Samplers Name Sampler~ Signature . Annual Tailings 2023 Tanner Holliday I -\,.,..,,.. Hi71/-/ Time ' , Date Sample ID Collected Collected Laboratory Analysis Requested Dissolved Gross Alpha, Thori!-lm '(228, 230,232) Uranium Cell 1 8/29/2023 835 (233/234, 235/236, 238), Ra-226, specific gravity, VOCs, SVOCs Dissolved Gross Alpha, Thorium (228, 230, 232) Uranium 7 Slimes #2 8/29/2023 855 (233/234, 235/236, 238), Ra-226, specific gravity , voes, SVOCs Dissolved Gross Alpha, Thorium (228, 230, 232) Uranium 7 Cell4A 8/29/2023 940 (233/234, 235/236, 238), Ra-226, specific gravity, VOCs, SVOCs Dissolved Gross Alpha, Thorium (228, 230, 232) Uranium ' Cell 4A LOS 8/29/2023 1000 (233/234, 235/236, 238), Ra-226, specific gravity, VOCs, SVOCs Dissolved Gross Alpha, Thorium (228, 230, 232) Uranium Cell 4B 8/29/2023 1015 (233/234, 235/236, 238), Ra-226, specific gravity, VOCs, SVOCs Dissolved Gross Alpha, Thorium (228, 230, 232) Uranium Cell 4B LDS 8/29/2023 1030 (233/234, 235/236, 238), Ra-226, specific gravity, voes, SVOCs Dissolved Gross Alpha, Thorium (228, 230, 232) Uranium Ce\165 8/29/2023 940 (233/234 , 235/236, 238), Ra-226, specific gravity, VOCs, SVOCs -,;.-~ -13 I W1 ts q/~?(z,;~;_J ' Specific gr.avity is to be fun on UNFILTERED sample aliquot . I Comments: SAMPLES ARE NOT FIELD FIL TE RED -PLEASE FILTER UPON RECEIPT! SAMPLES ARE NOT PRESERVED -pH is as collected! See Ju li e Robinson for technical questions. No LOCUS UPLOAD. Methods used . ~·· = same as 488668 Relinquished~-~·gn ture ) Date/Time Re/e}i ed By~. i ature) D'te/Time ~aML,<. , IC /30 /2oz.'J / /4 p..,p~· iq, 3\\'l.-~ \~L\1<; 1/'.\0 Relinquished By:(Signature) Date/Time Received By:(Signature) Date/Time Page 4 of 106 SDG: 635551 ~ j Labor1!ories LLt: Cllcnl: 7)1.//,;f T Rcc c:vc d n~ _LJ Carrier o.nd Tracking Number S UJ:pcclcd H:i·L-,rd L.11rorm:1Lion 8) Did lhc dii:nt c.J.:sipM!c 1hc iamp\1!.S ;\J'C 10 h..: rcc:t:i vc.d :u r:ltJh.,nc 1l -.i c·1 I/ SAMPLE RECEIPT & REVIEW FORM SDC/AR/CO C/Wo rlt Ord er: DmR•cei•cd: R"/,5 { /~ 01hcr I H;;).'.:~d Cl:us Shir,pcd: UN#: • lrliN19l0. I!; 1hc R~Llio :1cti,·c Shipnlcnl Survey Compli:1111? Y..:!i_ No_ Cl Did \he RSO cl:i_,;.,;ify 1hc s:1n,pl~:, a.~ r:;dio~aivc~ I M.:1~i111um Ncl Co1.:11Lo; Obscr1cd• ~ll~f.d Counl!i -An.:J aacJ.:g-rou 11d Coums l: Ml/!!j_fr~, nin./H r Cl:lss ificd :a.s : R::i<l I CH,~ :)' R:iU J - I / CCC n01:uion Or ll:u.;11d l::ibcJ.-. on com:,incr.. cquJI client dcd~J1ion. :.:D:.l,._D=IJ:.;•c:b.:.c .::."'c:'•:.:·"cc'..::".:.";:.l<e.;""'..::· ..::«..;.-"'="""'l"'c,""'=c<.=..:..:lr.u;;;' :;:='=''..::"-'..::1+-1-1 ✓-.;,.,,-=--, I / If Dor i:. is yes . .,elect H,'l.N~ k ith"'. I-/ PCB 's H:imm::iblc: Fo,cii;n Soil RCRA A l ~s los Bcf)llium Olhc r. Snmplc Receipt Critcrfo 1 S hipping com:1incr~ received inr:.ic1 ilnd sc::ilcd? I - 2 Ch:iin of custody docurrcnls inclutkd I ~ w ith ,hi;mi,cot '! I ✓ ~.:. ~c..:,___.._-----11~1 3 S3mplcs requiring CClld pr:scrv:.11inn wi1hin (0 -. 6 ~e~ C)?• ilt,;J~rv:niun ;\h:tln~~~ l1,,"1: Pod.; Dry tt"'.!' •all 11:mpcr:mm:::s :uc f(:CunJc:J in Celsius tJ d :J I R ~• ~ Tcmpc :-Jtu.n: Di::,·icc Serl!\.I I : -•~,'.-2,-; 4 Doily check pcrfurrrc Jn pa.ssc· on :g Sccc,,d.vy Tc•nF~r:uun: Device Seri,!# (Jr AFpli c:blcJ; te mperature gun? ~~-1-,--,----,---=-,-,.-:-----::---:--.,---:--:------,,.:---;---:--------------i I ~~ C-:rc!c ,,r-rt.c:;ibk: S~\s ti111l:c11 O:.mu;c:S .:niiuini:-: Lc .i l:.m; :nn,Ji;ntt <:,her HJcu.--J•c t 5 S .imp lc cont:lllll:rs intJ.Cl :rnd :,1!:.ilcd? 6 S:lmplcs rc~uiring chcmiL::il prc~~:11 iun cu proper pH".' 7 Do ony s,mplc, require Vola1 i:c An:ily~is? g ~ / 10·, :.ind IC SU lifC'C'1 Cd:. 8 S:.implc~ rcc:i\'cd within holdi r~ lime? I / i .1--l-:c,o:::.c-, -,."'~,..co-n-,°',U-nc_r.s.....,,a=e-,,-."'tt-, --------------------------------1 ✓ ·\: Dote & time on COC mJtch dolO & ti me 1 o on bottles? / N u11~cr of cont;tincrs rccdvcd match / ~~ ll numbe r in<licOlcJ on COC7 Arc ~mp lc cnn1oincr:< ide nt i fiable '" / 12 GEL nrovld cd bv use of GEL bbcls? / l---l.!::C!!O:!C::..Efo!!r~m'.!!!.is~p!..r~o!..pc!!:r~ly~<i...:&~nc::i.177in=='---j 1 1J re ti nquishc d/rccei \'td ~ctions? o• Commc nlS (lJs• Cun1 inU1Uiu n f-o rm if n«ueJ): Circtc Applic-Jblc: No d.11c.s on con1::i incrs No timcJ on conl .Ji:icrs COC miui:-i; info 01 hu (l!..:sr :itc) Cirdc Applinblc : No coru::iincr count on CCC 01hcr (1!c.<crihc) A-1 ' r~ (nr PMA) R:Yicw: f11i1i:Jc '7) I _/V u · GL -CHL·SR·COl Rev 7 Page 5 of 106 SDG: 635551 GEL Laboratories LLC -Login Review Report GEL Work Order/SDG: 635551 Client SDG: 635551 Annual Tailings 2023 Project Manager: Project Name: Purchase Order: Package Level: EDD Format: Julie Robinson DNMI00107 Tailings Characterization DW16138 LEVEL3 EIM_DNMI Collect GELID Client Sample ID Client Sample Desc. Date & Time 635551001 Cell 1 635551002 Slimes#2 635551003 Cell4A 635551004 Cell 4A LOS 635551005 Cell4B 635551006 Cell4B LOS 635551007 Cell 65 635551008 TRIP BLANKS Client Sample ID -001 Cell 1 -002 Slimes #2 Page 6 of 106 Status Tests/Methods REVW Rad 2 Aliquot for distribution throughout the lab REVW Alphaspec Th, Liquid 29-AUG-23 08 :35 29-AUG-23 08:55 29-AUG-23 09 :40 29-AUG-23 10:00 29-AUG-23 10:15 29-AUG-23 10:30 29-AUG-23 09:40 29-AUG-23 09 :40 Product Reference REVW U-233/234,U-235/236 and U-238 U-233/234,U- 235/236 REVW BNA Tentatively Identified Compound (TIC) Search REVW Laboratory Composite RAD2 REVW VOA Library Search Liquid REVW ASTM D 5057 Specific Gravity REVW Lucas Cell, Ra226, liquid REVW SW846 3510C/8270E SVOA (Separatory Funnel) REVW GFPC ,Total Alpha Radium, Liquid Gross Alpha REVW SW846 8260 Volatiles REVW Rad 2 Aliquot for distribution throughout the lab REVW Lucas Cell, Ra226, liquid REVW SW846 8260 Volatiles REVW Laboratory Composite RAD2 REVW BNA Tentatively Identified Compound (TIC) Search REVW SDG: 635551 Work Order Due Date: 29-SEP-23 Package Due Date: EDD Due Date: Due Date: JAR1 Receive Time #of Date & Time Zone Cont. 31-AUG-23 11 :45 -2 7 31-AUG-23 11 :45 -2 7 31-AUG-2311 :45 -2 7 31-AUG-23 11:45 -2 7 3 1-AUG-23 11:45 -2 7 31-AUG-23 11:45 -2 7 31-AUG-23 11 :45 -2 6 31-AUG-23 11 :4 5 -2 3 Fax Date PM Comments 29-SEP-23 29-SEP-23 29-SEP-23 Lab Matrix WATER WATER WATER WATER WATER WATER WATER WATER Handle these samples carefully, they are low pH with high metals. Use container .02 for all analyses. Specific gravity is to be run on UNFILTERED sample aliquot. Handle these samples carefully, they are low pH with high metals. Use container .02 for all analyses. Specific gravity is to be run on UNFILTERED sample aliquot. Report Date: 28-SEP-23 Work Order: 635551 Page 1 of 9 Collector: C Prelogin #: 202308180116 Project Workdef ID: 1330584 SDG Status: Closed Logged by: Fax Days to Due Date Process 20 20 20 20 20 20 20 20 Aux Data CofC# Prelog Lab Field Group QC QC y Receive Codes RAD2 RAD2 GEL Laboratories LLC -Login Review Report ASTM D 5057 Specific Gravity REVW Alphaspec Th, Liquid REVW GFPC,Total Alpha Radium, Liquid Gross Alpha REVW SW846 3510C/8270E SVOA (Separatory Funnel) REVW U-233/234,U-235/236 and U-238 U-233/234,U- 235/236 REVW VOA Library Search Liquid -003 Cell4A REVW ASTM D 5057 Specific Gravity REVW SW846 3510C/8270E SVOA (Separatory Funnel) REVW Lucas Cell, Ra226, liquid REVW U-233/234,U-235/236 and U-238 U-233/234,U- 235/236 REVW BNA Tentatively Identified Compound (TIC) Search REVW Rad 2 Aliquot for distribution throughout the lab REVW Laboratory Composite RAD2 REVW VOA Library Search Liquid REVW Alphaspec Th, Liquid REVW GFPC,Total Alpha Radium, Liquid Gross Alpha REVW SW846 8260 Volatiles -004 Cell 4A LOS REVW Rad 2 Aliquot for distribution throughout the lab REVW GFPC,Total Alpha Radium, Liquid Gross Alpha REVW VOA Library Search Liquid REVW Lucas Cell, Ra226, liquid REVW SW846 8260 Volatiles REVW Alphaspec Th, Liquid REVW Laboratory Composite RAD2 REVW SW846 3510C/8270E SVOA (Separatory Funnel) REVW ASTM D 5057 Specific Gravity REVW BNA Tentatively Identified Compound (TIC) Search REVW U-233/234,U-235/236 and U-238 U-233/234,U- 235/236 -005 Cell 4B REVW Laboratory Composite RAD2 REVW SW846 3510C/8270E SVOA (Separatory Funnel) REVW Alphaspec Th, Liquid REVW ASTM D 5057 Specific Gravity REVW Rad 2 Aliquot for distribution throughout the lab REVW U-233/234,U-235/236 and U-238 U-233/234,U- 235/236 REVW BNA Tentatively Identified Compound (TIC) Search Page 7 of 106 SDG: 635551 Handle these samples carefully, they are low pH with high metals. Use container .02 for all analyses. Specific gravity is to be run on UNFILTERED sample aliquot. Handle these samples carefully, they are low pH with high metals. Use container .02 for all analyses. Specific gravity is to be run on UNFILTERED sample aliquot. Handle these samples carefully, they are low pH with high metals. Use container .02 for all analyses. Specific gravity is to be run on UNFILTERED sample aliquot. Report Date: 28-SEP-23 Work Order: 635551 Page 2 of 9 RAD2 RAD2 RAD2 GEL Laboratories LLC -Login Review Report REVW VOA Library Search Liquid REVW GFPC,Total Alpha Rad i um, Liquid Gross Alpha REVW Lucas Cell, Ra226, liquid REVW SW846 8260 Volatiles -006 Cell 4B LDS REVW Lucas Cell, Ra226 , liquid REVW VOA Library Search Liquid REVW SW846 3510C/8270E SVOA (Separalory Funnel) REVW ASTM D 5057 Specific Gravity REVW Alphaspec Th, Liquid REVW U-233/234,U-235/236 and U-238 U-233/234,U- 235/236 REVW Laboratory Composite RAD2 REVW BNA Tentatively Identified Compound (TIC) Search REVW SW846 8260 Volatiles REVW Rad 2 Aliquot for distribution throughout the lab REVW GFPC,Total Alpha Radium , Liquid Gross Alpha -007 Cell 65 REVW VOA Library Search Liquid REVW SW846 3510C/8270E SVOA (Separatory Funnell REVW ASTM D 5057 Specific Gravity REVW Rad 2 Aliquot for distribution throughout the lab REVW U-233/234,U-235/236 and U-238 U-233/234,U- 235/236 REVW Lucas Cell, Ra226 , liquid REVW Laboratory Composite RAD2 REVW SW846 8260 Volatiles REVW Alphaspec Th, Liquid REVW GFPC,Total Alpha Radium, Liquid Gross Alpha REVW BNA Tentatively Identified Compound (TIC) Search -008 TRIP BLANKS REVW SW846 8260 Volatiles REVW VOA Library Search Liquid REVW Rad 2 Aliquot for distribution throughout the lab REVW Laboratory Composite RAD2 Page 8 of 106 SDG: 635551 Handle these samples carefully, they are low pH with high metals. Use container .02 for all analyses. Specific gravity is lo be run on UNFILTERED sample aliquot. Handle these samples carefully, they are low pH with high metals. Use container .02 for all analyses. Specific gravity is to be run on UNFILTERED sample aliquot. Handle these samples carefully, they are low pH with high metals. Use container .02 for all analyses . Specific gravity is to be run on UNFILTERED sample aliquot. Report Date: 28-SEP-23 Work Order: 635551 Page 3 of 9 RAD2 RAD2 RAD2 GEL Laboratories LLC -Login Review Report Report Date: 28-SEP-23 Work Order: 635551 Page 4 of 9 Product: VOA8260_L WorkdeflD: 1542350 In Product Group? No Group Name: Group Reference: Method: SW846 8260D Path: 8260D Unpreserved (7d HT) Product Description: SW846 8260 Volatiles Product Reference: Samples: 008, 001, 002, 003, 004, 005, 006, 007 Moisture Correction: "As Received" Parmname Check: All parmnames scheduled properly Client RDL or Reporting Parm Included Included Custom CAS# Parmname PQL& Unit Units Function in Sample? in QC? List? 17060-07-0 1,2-Dichloroethane-d4 50 ug/L ug/L SURR y y No 3855-82-1 1,4-Dichlorobenzene-d4 ug/L IS y y 78-93-3 2-Butanone 4000 ug/L REG y y 67-64-1 Acetone 700 ug/L REG y y 71-43-2 Benzene 5 ug/L REG y y 460-00-4 Bromofluorobenzene 50 ug/L ug/L SURR y y 56-23-5 Carbon tetrachloride 5 ug/L REG y y 3114-55-4 Chlorobenzene-d5 ug/L IS y y 67-66-3 Chloroform 70 ug/L REG y y 74-87-3 Chloromethane 30 ug/L REG y y 462-06-6 Fluorobenzene ug/L IS y y 75-09-2 Methylene chloride 5 ug/L REG y y 91-20-3 Naphthalene 100 ug/L REG y y 109-99-9 Tetrahydrofuran 46 ug/L REG y y 108-88-3 Toluene 1000 ug/L REG y y 2037-26-5 Toluene-dB 50 ug/L ug/L SURR y y 1330-20-7 Xylenes (total) 10000 ug/L REG y y Product: MSDTIC_L WorkdeflD: 1551147 In Product Group? No Group Name: Group Reference: Method: Path: 8270E Product Description: BNA Tentatively Identified Compound (TIC) Search Product Reference: Samples: 001, 002, 003, 004, 005, 006, 007 Moisture Correction: "As Received" Parmname Check: All parmnames scheduled properly Client RDL or Reporting Parm Included Included Custom CAS# Parmname PQL & Unit Units Function in Sample? in QC? List? TIC ug/L IS y y No Page 9 of 106 SDG: 635551 GEL Laboratories LLC -Login Review Report Product: ASP_ THL Workdef ID: 1371096 In Product Group? No Method: DOE EML HASL-300, Th-01-RC Modified Product Description: Alphaspec Th, Liquid Samples: 001, 002, 003, 004, 005, 006, 007 Parmname Check: All parmnames scheduled properly CAS# 14274-82-9 14269-63-7 7440-29-1 Parmname Thorium-228 Thorium-230 Thorium-232 Product: ASP_ UUL Workdef ID: 1371097 In Product Group? No Method: DOE EML HASL-300, U-02-RC Modified Product Description: U-233/234,U-235/236 and U-238 Samples: 001, 002, 003, 004, 005, 006, 007 Parmname Check: All parmnames scheduled properly CAS# Parmname 13968-55-3/13966-2 Uranium-233/234 15117-96-1/13982-7 Uranium-235/236 7440-61-1 Uranium-238 Product: GFCTORAL Workdef ID: 1371098 Method: EPA 903.0 Product Description: GFPC,Total Alpha Radium, Liquid Samples: 001, 002, 003, 004, 005, 006 , 007 Parmname Check: All parmnames scheduled properly CAS# Parmname Gross Radium Alpha Product: LUC26RAL WorkdeflD: 1371099 Method: EPA 903 ,1 Modified Product Description: Lucas Cell, Ra226, liquid Samples: 001, 002, 003, 004,005, 006, 007 Parmname Check: All parmnames scheduled properly CAS# Parmname 13982-63-3 Radium-226 Page 10 of 106 SDG: 635551 In Product Group? No In Product Group? No Group Name : Client RDL or PQL & Unit Group Name: Client RDL or PQL& Unit Group Name: Client RDL or PQL & Unit Group Name : Client RDL or PQL& Unit Reporting Units pCi/L pCi/L pCi/L Reporting Units pCi/L pCi/L pCi/L Reporting Units pCi/L Reporting Units pCi/L Report Date: 28-SEP-23 Work Order: 635551 Page 5 of 9 Group Reference: Path: High Rad Product Reference: Moisture Correction: "As Received" Parm Included Included Custom Function in Sample? in QC? List? REG REG REG y y y y y y No Group Reference: Path: High Rad Product Reference: U-233/234,U-235/236 Moisture Correction: "As Received" Parm Included Included Custom Function in Sample? in QC? List? REG REG REG y y y y y y No Group Reference: Path: High Rad Product Reference: Gross Alpha Moisture Correction: "As Received" Parm Included Included Custom Function in Sample? in QC? List? REG y y No Group Reference: Path: High Rad Product Reference: Moisture Correction: "As Received" Parm Included Included Custom Function in Sample? in QC? List? REG y y No GEL Laboratories LLC -Login Review Report Product: LABCOMP _L Workdef ID: 1371213 Method: Product Description: Laboratory Composite Samples: 008, 001, 002, 003, 004, 005, 006, 007 Parmname Check: All parmnames scheduled properly CAS# Parmname Product: MISSGAS_L Workdef ID: 1370067 Method: ASTM D 5057 Product Description: ASTM D 5057 Specific Gravity Samples: 001, 002, 003,004,005, 006, 007 Parmname Check: All parmnames scheduled properly CAS# Parmname Specific Gravity Product: RADALQT_L Workdef ID: 1371095 Method: In Product Group? No In Product Group? No In Product Group? No Product Description: Rad 2 Aliquot for distribution throughout the lab Samples: 008, 001, 002, 003,004, 005, 006, 007 Parmname Check: All parmnames scheduled properly CAS# Parmname Product: MSD8270_L Workdef ID: 1562759 In Product Group? No Method: SW846 3510C/8270E Product Description: SW846 3510C/8270E SVOA (Separatory Funnel) Samples: 001, 002, 003, 004, 005, 006, 007 Parmname Check: All parmnames scheduled properly CAS# Parmname 120-82-1 1,2,4-Trichlorobenzene 95-50-1 1,2-Dichlorobenzene 122-66-7 1,2-Diphenylhydrazine 541-73-1 1,3-Dichlorobenzene 106-46-7 1,4-Dichlorobenzene Page 11 of 106 SDG: 635551 Group Name: Client RDL or PQL& Unit Group Name: Client RDL or PQL& Unit .1 none Group Name: Client RDL or PQL & Unit Group Name: Client RDL or PQL & Unit 10 ug/L 10 ug/L 10 ug/L 10 ug/L 10 ug/L Reporting Units Reporting Units none Reporting Units Reporting Units ug/L ug/L ug/L ug/L ug/L Report Date: 28-SEP-23 Work Order: 635551 Page 6 of 9 Group Reference: Path: High Rad Product Reference: RAD2 Moisture Correction: "As Received" Parm Included Included Custom Function in Sample? in QC? List? No Group Reference: Path: Standard Product Reference: Moisture Correction: "As Received" Parm Included Included Custom Function in Sample? in QC? List? REG y y No Group Reference: Path: Standard Product Reference: Moisture Correction: "As Received" Parm Included Included Custom Function in Sample? in QC? List? No Group Reference: Path: Standard Product Reference: Moisture Correction: "As Received" Parm Included Included Custom Function in Sample? in QC? List? REG y y No REG y y REG y y REG y y REG y y GEL Laboratories LLC -Login Review Report Report Date: 28-SEP-23 Work Order: 635551 Page 7 of 9 3855-82-1 1,4-Dichlorobenzene-d4 ug/L IS y y 90-12-0 1-Methylnaphthalene 1 ug/L ug/L REG y y 95-95-4 2,4,5-Trichlorophenol 10 ug/L ug/L REG y y 118-79-6 2,4,6-Tribromophenol 10 ug/L ug/L SURR y y 88-06-2 2,4,6-Trichlorophenol 10 ug/L ug/L REG y y 120-83-2 2,4-Dichlorophenol 10 ug/L ug/L REG y y 105-67-9 2,4-Dimethylphenol 10 ug/L ug/L REG y y 51-28-5 2,4-Dinitrophenol 20 ug/L ug/L REG y y 121-14-2 2,4-Dinitrotoluene 10 ug/L ug/L REG y y 606-20-2 2,6-Dinitrotoluene 10 ug/L ug/L REG y y 91-58-7 2-Chloronaphthalene 1 ug/L ug/L REG y y 95-57-8 2-Chlorophenol 10 ug/L ug/L REG y y 321-60-8 2-Fluorobiphenyl 10 ug/L ug/L SURR y y 367-12-4 2-Fluorophenol 10 ug/L ug/L SURR y y 534-52-1 2-Methyl-4,6-dinitrophenol 10 ug/L ug/L REG y y 91-57-6 2-Methylnaphthalene 1 ug/L ug/L REG y y 88-75-5 2-Nitrophenol 10 ug/L ug/L REG y y 119-93-7 3,3'-Dimethylbenzidine 10 ug/L ug/L REG y y 101-55-3 4-Bromophenylphenylether 10 ug/L ug/L REG y y 59-50-7 4-Chloro-3-methylphenol 10 ug/L ug/L REG y y 7005-72-3 4-Chlorophenylphenylether 10 ug/L ug/L REG y y 100-02-7 4-Nitrophenol 10 ug/L ug/L REG y y 83-32-9 Acenaphthene 1 ug/L ug/L REG y y 15067-26-2 Acenaphthene-d 10 ug/L IS y y 208-96-8 Acenaphthylene 1 ug/L ug/L REG y y 120-12-7 Anthracene 1 ug/L ug/L REG y y 92-87-5 Benzidine 10 ug/L ug/L REG y y 56-55-3 Benzo(a )anthracene 1 ug/L ug/L REG y y 50-32-8 Benzo(a)pyrene 1 ug/L ug/L REG y y 205-99-2 Benzo(b )fluoranthene 1 ug/L ug/L REG y y 191-24-2 Benzo(ghi)perylene 1 ug/L ug/L REG y y 207-08-9 Benzo(k)fluoranthene 1 ug/L ug/L REG y y 85-68-7 Butylbenzylphthalate 1 ug/L ug/L REG y y 218-01-9 Chrysene 1 ug/L ug/L REG y y 1719-03-5 Chrysene-d12 ug/L IS y y 84-74-2 Di-n-butylphthalate 1 ug/L ug/L REG y y Page 12 of 106 SDG: 635551 GEL Laboratories LLC -Login Review Report Report Date: 28-SEP-23 Work Order: 635551 Page 8 of 9 117-84-0 Di-n-octylphthalate 1 ug/L ug/L REG y y 53-70-3 Dibenzo(a,h)anthracene 1 ug/L ug/L REG y y 84-66-2 Diethylphthalate 1 ug/L ug/L REG y y 131-11-3 Dimethylphthalate 1 ug/L ug/L REG y y 122-39-4 Diphenylamine 10 ug/L ug/L REG y y 206-44-0 Fluoranthene 1 ug/L ug/L REG y y 86-73-7 Fluorene 1 ug/L ug/L REG y y 118-74-1 Hexachlorobenzene 10 ug/L ug/L REG y y 87-68-3 Hexachlorobutadiene 10 ug/L ug/L REG y y 77-47-4 Hexachlorocyclopentadiene 10 ug/L ug/L REG y y 67-72-1 Hexachloroethane 10 ug/L ug/L REG y y 193-39-5 lndeno(1,2,3-cd)pyrene 1 ug/L ug/L REG y y 78-59-1 lsophorone 10 ug/L ug/L REG y y 62-75-9 N-Methyl-N-nitrosomethylamine 10 ug/L ug/L REG y y 621-64-7 N-Nitrosodipropylamine 10 ug/L ug/L REG y y 91-20-3 Naphthalene 1 ug/L ug/L REG y y 1146-65-2 Naphthalene-dB ug/L IS y y 98-95-3 Nitrobenzene 10 ug/L ug/L REG y y 4165-60-0 Nitrobenzene-d5 10 ug/L ug/L SURR y y 87-86-5 Pentachlorophenol 10 ug/L ug/L REG y y 1520-96-3 Perylene-d 12 ug/L IS y y 85-01-8 Phenanthrene 1 ug/L ug/L REG y y 1517-22-2 Phenanthrene-d 10 ug/L IS y y 108-95-2 Phenol 10 ug/L ug/L REG y y 4165-62-2 Phenol-d5 10 ug/L ug/L SURR y y 129-00-0 Pyrene 1 ug/L ug/L REG y y 110-86-1 Pyridine 10 ug/L ug/L REG y y 108-60-1 bis(2-Chloro-1-methylethyl)ether 10 ug/L ug/L REG y y 111-91-1 bis(2-Chloroethoxy)methane 10 ug/L ug/L REG y y 111-44-4 bis(2-Chloroethyl) ether 10 ug/L ug/L REG y y 117-81-7 bis(2-Ethylhexyl)phthalate 1 ug/L ug/L REG y y 65794-96-9 m,p-Cresols 10 ug/L ug/L REG y y 95-48-7 o-Cresol 10 ug/L ug/L REG y y 1718-51-0 p-Terphenyl-d14 10 ug/L ug/L SURR y y Page 13 of 106 SDG: 635551 GEL Laboratories LLC -Login Review Report Product: VOATIC_L Workdef ID: 1542348 Method: Product Description: VOA Library Search Liquid Samples: 008, 001, 002, 003, 004, 005, 006, 007 Parmname Check: All parmnames scheduled properly CAS# Parmname In Product Group? No Action Product Name Description Contingent Tests Login Requirements: Requirement Group Name: Client RDL or PQL& Unit Samples Reporting Units Include? Comments Peer Review by : ____________ _ Work Order (SDG#), PO# Checked? ____ _ Page 14 of 106 SDG: 635551 Group Reference: Report Date: 28-SEP-23 Work Order: 635551 Page 9 of 9 Path: TIC 8260D Standard Product Reference: Moisture Correction: "As Received" Parm Included Included Custom Function in Sample? in QC? List? No C of C signed in receiver location? _____ _ GC/MS Volatile Technical Case Narrative Energy Fuels Resources SDG #: 635551 Product: Volatile Organic Compounds (VOC) by Gas Chromatograph/Mass Spectrometer Analvtical . lethod: SW846 8260D nalytical Procedure: GL-OA-E-038 REV# 29 Analytical Batch: 2487341 The following samples were analyzed using the above methods and analytical procedure(s). GEL Sample ID# 635551001 635551002 635551003 635551004 635551005 635551006 635551007 635551008 1205507700 1205507701 1205507702 1205507703 1205507704 1205507754 1205507755 Client Sample Identification Cell 1 Slime#2 Cell 4A Cell 4A LDS Cell 4B Cell 4B LDS Cell 65 TR1PBLANK Laboratory Control Sample (LCS) Laboratory Control Sample (LCS) 63555100l(Cell l) Post Spike (PS) 63555100 I (Cell 1) Post Spike Duplicate (PSD) Method Blank (MB) 63555100l(Cell l) Post Spike (PS) 63555100l(Cell I) Post Spike Duplicate (PSD) 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. Calibration Information Continuing Calibration Verification Requirements All Calibration Verification Standards (CCV) did not meet the acceptance criteria as outlined in Method 8260D for samples and the associated QC. However, the method allows for a designated number of outliers dependent on the requested analyte list. This SDG satisfied the 8260D outlier acceptance criteria. The results are reported. Quality Control (OC) Information Blank (MB) Statement Target analytes were detected in the blank 1205507704 (MB) below the reporting limit. The associated data are qualified accordingly and reported. Technical Information Sample Dilutions/Methanol Dilutions Samples were analyzed employing a dilution procedure because the sample matrices were not amenable to more concentrated analyses . Page 16 of 106 SDG: 635551 635551 Analyte 001 002 003 004 005 006 007 l ,4-Dichlorobenzene-d4 5X 5X 5X 5X 5X 5X 5X 2-Butanone 5X 5X 5X 5X 5X 5X 5X Acetone 5X sx 5X 5X 5X 5X 5X Benzene 5X sx sx 5X sx 5X 5X Carbon tetrachloride sx sx 5X 5X 5X sx sx Chlorobenzene-d5 sx sx sx sx 5X sx sx Chloroform 5X sx sx sx sx sx 5X Chloromethane 5X sx sx sx sx sx 5X Fluorobenzene sx 5X 5X 5X 5X sx sx Methylene chloride sx sx 5X 5X 5X 5X sx Naphthalene 5X sx 5X 5X 5X 5X sx Tetrahydrofuran 5X sx 5X sx sx 5X 5X Toluene sx sx sx sx sx sx 5X Xylenes (total) sx sx 5X 5X 5X sx sx Miscellaneous Information TIC Comment Tentatively identified compounds (TIC) were requested for samples in this delivery group/work order. Please note that non-requested calibrated analytes detected in a client sample may be reported on the Form I/Certificate of Analysis as TICs. TIC data, ifrequested, were included on the Sample Data Summary (Form I) and included with the sample raw data . 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 17 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Qualifier Definition Report for DNMIO0I Energy Fuels Resources (USA), Inc. Client SDG: 635551 GEL Work Order: 635551 The Qualifiers in this report are defined as follows: * A quality control analyte recovery is outside of specified acceptance criteria ** Analyte is a surrogate compound B For General Chemistry and Organic analysis the target analyte was detected in the associated blank. U Analyte was analyzed for, but not detected above the CRDL. DL Indicates that sample is diluted. RA Indicates that sample is re-analyzed without re-extraction . RE Indicates that sample is re-extracted. ReviewN alidation GEL requires all analytical data to be verified by a qualified data reviewer. In addition , all CLP-like deliverables receive a third level review of the fractional data package. The following data validator verified the information presented in this data report: Signature: ~A.~~, Name: Michael Penny Date: 18 SEP 2023 Title: Analyst Ill Page 18 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston , SC 29407 -(843) 556-8171 -www.gel.com QC Summary Renort Date: September 18, 2023 Energy Fuels Resources (USA), Inc. Page 1 of 6 225 Union Boulevard Suite 600 Lakewood, Colorado Contact: Ms. Kathy Weinel Workorder: 635551 Parmname NOM Units RPD¾ REC¾ Rane Anlst Date Time Volatile-GC/MS Batch 2487341 QC I 205507700 LCS 2-Butanone 250 206 ug/L 82 (63%-134%) PXYl 09/05/23 11: 19 Acetone 250 232 ug/L 93 (56%-149%) Benzene 50.0 51.4 ug/L 103 (74%-128 %) Carbon tetrachloride 50.0 62.2 ug/L 124 (70%-135%) Chloroform 50 .0 55 .6 ug/L 111 (74%-122%) Chloromethane 50.0 42 .7 ug/L 85 (56%-142%) Methylene chloride 50.0 B 47 .7 ug/L 95 (65%-121%) Naphthalene 50.0 53.7 ug/L 107 (68%-126%) Toluene 50.0 48 .8 ug/L 98 (73%-121%) Xylenes (total) 150 159 ug/L 106 (74%-124%) * * l ,2-Dichloroethane-d4 50 .0 51.3 ug/L 103 (76%-127%) **Bromofluorobenzene 50 .0 47.2 ug/L 94 (74%-123%) **Toluene-dB 50.0 46.2 ug/L 92 (77%-121%) Page 27 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 2 of 6 Parmname NOM Sam C Units RPD% REC% Ran e Anlst Date Time Volatile-GC/MS Batch 2487341 QC1205507701 LCS Tetrahydrofuran 250 198 ug/L 79 (61 %-123 %) PXYI 09/05 /23 12:14 * * l ,2-Dichloroethane-d4 50.0 50 .6 ug/L IOI (76%-127%) **Bromofluorobenzene 50.0 47 .0 ug/L 94 (74%-123%) **Toluene-d8 50 .0 45 .8 ug/L 92 (77 %-121%) QC 1205507704 MB 2-Butanone u ND ug/L 09/05 /23 13 :37 Acetone u ND ug/L Benzene u ND ug/L Carbon tetrachloride u ND ug/L Chloroform u ND ug/L Chloromethane u ND ug/L Methylene chloride u ND ug/L Naphthalene u ND ug/L Tetrahydrofuran u ND ug/L Toluene u ND ug/L Xylenes (total) u ND ug/L Page 28 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 3 of 6 Parmname NOM Sam C Units RPD% REC% Rane Anlst Date Time Volatile-GC/MS Batch 2487341 ** 1,2-Dichloroethane-d4 50 .0 52 .5 ug/L 105 (76%-127%) PXYI 09/05/23 13 :37 **Bromofluorobenzene 50 .0 47.4 ug/L 95 (74%-123%) **Toluene-dB 50 .0 46.8 ug/L 94 (77%-121%) QC 1205507702 635551001 PS 2-Butanone 250 u 4000 196 ug/L 78 (47%-134%) 09/05 /23 17:47 Acetone 250 u 700 219 ug/L 88 (50%-139%) Benzene 50.0 u 5.00 45.2 ug/L 90 (67%-128%) Carbon tetrachloride 50 .0 u 5.00 55 .0 ug/L 110 (58%-141%) Chloroform 50.0 u 70.0 49.8 ug/L JOO (65%-128%) Chloromethane 50 .0 u 30.0 40.6 ug/L 81 (42%-152%) Methylene chloride 50.0 BU 5.00 B 43.6 ug/L 86 (58%-123%) Naphthalene 50 .0 u JOO 46 .2 ug/L 92 (58%-131%) Toluene 50.0 u 1000 42 .8 ug/L 86 (63%-121%) Xylenes (total) 150 u 10000 141 ug/L 94 (55%-129%) * * l ,2-Dichloroethane-d4 50.0 52.8 51.9 ug/L 104 (76%-127%) **Bromofluorobenzene 50.0 46.3 46 .1 ug/L 92 (74%-123%) Page 29 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 4 of 6 Parmname N01 I Sam le Units RPD¾ REC% Ran e Anlst Date Time Volatile-GC/MS Batch 2487341 **Toluene-d8 50.0 46.3 45.9 ug/L 92 (77%-121%) PXYl 09/05/23 17:47 QCJ 205507754 635551001 PS Tetrahydrofuran 250 u 46 .0 203 ug/L 81 (53%-129%) 09/05 /23 18:42 ** l ,2-Dichloroethane-d4 50.0 52.8 52.8 ug/L 106 (76%-127%) **Bromofluorobenzene 50.0 46.3 48.8 ug/L 98 (74%-123%) **Toluene-d8 50.0 46.3 46.0 ug/L 92 (77%-121%) QCJ205507703 635551001 PSD 2-Butanone 250 u 4000 217 ug/L 10 87 (0%-20%) 09/05/23 18: 15 Acetone 250 u 700 219 ug/L 0 88 (0%-20%) Benzene 50.0 u 5 .00 48.8 ug/L 8 98 (0%-20%) Carbon tetrachloride 50.0 u 5.00 57.1 ug/L 4 114 (0%-20%) Chloroform 50.0 u 70.0 52.0 ug/L 4 104 (0%-20%) Chloromethane 50.0 u 30.0 39.3 ug/L 3 79 (0%-20%) Methylene chloride 50.0 BU 5.00 B 44.0 ug/L 87 (0%-20%) Naphthalene 50.0 u 100 50.2 ug/L 8 100 (0%-20%) Toluene 50.0 u 1000 46.5 ug/L 8 93 (0%-20%) Page 30 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 5 of 6 Parmname NOM C Units RPD% REC% Ran e Anlst Date Time Volatile-GC/MS Batch 2487341 Xylenes (total) 150 u 10000 151 ug/L 7 100 (0%-20%) PXYI 09/05/23 18 : 15 ** I ,2-Dichloroethane-d4 50 .0 52.8 53.8 ug/L 108 (76%-127%) * *Bromofluorobenzene 50 .0 46.3 50.8 ug/L 102 (74%-123%) **Toluene-d8 50.0 46.3 47.3 ug/L 95 (77%-121%) QC1205507755 635551001 PSD Tetrahydrofuran 250 u 46.0 186 ug/L 9 75 (0%-20%) 09 /05 /23 19: I 0 ** 1,2-Dichloroethane-d4 50 .0 52.8 51.9 ug/L 104 (76%-127%) **Bromofluorobenzene 50 .0 46.3 46.9 ug/L 94 (74%-123%) **Toluene-d8 50.0 46.3 46.3 ug/L 93 (77%-121%) Notes: The Qualifiers in this report are defined as follows: p C B E A X N Organics--The concentrations between the primary and confirmation columns/detectors is >40% different. For HPLC , difference is also <70% Analyte has been confirmed by GC/MS analysis H ** < > y h For General Chemistry and Organic analysis the target analyte was detected in the associated blank . Organics--Concentration of the target analyte exceeds the instrument calibration range The TIC is a suspected aldol-condensation product Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Organics--Presumptive evidence based on mass spectral library search to make a tentative identification of the analyte (TIC). Quantitation is based on nearest internal standard response factor Analytical holding time was exceeded Analyte is a surrogate compound Result is less than value reported Result is greater than value reported QC Samples were not spiked with this compound Preparation or preservation holding time was exceeded Page 31 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Parmname NOM Sam le Units REC% Ran e nlst R Sample results are rejected " D RPO of sample and duplicate evaluated using +I-RL. Concentrations are <5X the RL. Qualifier Not Applicable for Radiochemistry. Results are reported from a diluted aliquot of the sample NIA RPD or %Recovery limits do not apply. ND Analyte concentration is not detected above the detection limit NJ Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier F Estimated Value M Matrix Related Failure JNX Non Calibrated Compound UJ Compound cannot be extracted Q One or more quality control criteria have not been met. Refer to the applicable narrative or DER. N 1 See case narrative U Analyte was analyzed for, but not detected above the CRDL. Page 6 of 6 Date Time NIA indicates that spike recovery limits do not apply when sample concentration exceeds spike cone. by a factor of 4 or more or %RPO not applicable. "The Relative Percent Difference (RPO) obtained from the sample duplicate (DUP) is evaluated against the acceptance 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 +I-the RL is used to evaluate the DUP result. * Indicates that a Quality Control parameter was not within specifications. For PS, PSD, and SOIL T results, the values listed are the measured amounts, not final concentrations. Where the analytical method has been performed under NE LAP certification, the analysis has met all of the requirements of the NELAC standard unless qualified on the QC Summary. Page 32 of 106 SDG: 635551 GC/MS Semivolatile Technical Case Narrative Energy Fuels Resources SDG #: 635551 Product: Analysis of Semivolatile Organic Compounds by Gas Chromatography/Mass Spectrometry Analytical Method: SW846 3510C/8270E Analytical Procedure: GL-OA-E-009 REV# 47 Analvtical Batch: 2486107 Preparation Method: SW846 3510C Preparation Procedure: GL-OA-E-013 REV# 35 Preparation Batch: 2486099 The following samples were analyzed using the above methods and analytical procedure(s). GEL Sample ID# 635551001 635551002 635551003 635551004 635551005 635551006 635551007 1205505479 1205505480 1205505481 Client Sample Identification Cell 1 Slime #2 Cell 4A Cell 4A LDS Cell 4B Cell 4B LDS Cell 65 Method Blank (MB) Laboratory Control Sample (LCS) Laboratory Control Sample Duplicate {LCSD) 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. Calibration Information CCV Requirements All Calibration Verification Standards (CCV) did not meet the acceptance criteria as outlined in Method 8270D/E for samples 635551001 (Cell l), 635551002 (Slime #2), 635551003 (Cell 4A), 635551004 (Cell 4A LDS), 635551005 (Cell 4B), 635551006 (Cell 4B LDS) and 635551007 (Cell 65) and the associated QC. However, the method allows for a designated number of outliers dependent on the requested analyte list. This SDG satisfied the 8270D/E outlier acceptance criteria. If required, a CRDL was analyzed after the CCVs to demonstrate that there is adequate sensitivity to detect the failed compounds at the applicable lower quantitation limit. Quality Control (QC} Information Laboratory Control Sample Duplicate (LCSD) An LCSD was used in place of matrix QC due to limited sample volume. Page 33 of 106 SDG: 635551 Miscellaneous Information TIC Comment Tentatively identified compounds (TIC) were requested for samples 635551001 (Cell I), 635551002 (Slime #2), 635551003 (Cell 4A), 635551004 (Cell 4A LDS), 635551005 (Cell 4B), 635551006 (Cell 4B LDS) and 635551007 (Cell 65) in this SDG in this batch. Additional Comments Diphenylamine Statement Diphenylamine has superseded the reporting ofN-Nitroso-diphenylamine. As per the EPA, N-Nitroso-diphenylamine decomposes in the gas chromatographic inlet and cannot be separated from Diphenylamine. Studies of these two compounds at GEL , both independent of each other and together, showed that they not only co-elute, but also have similar mass spectra. N-Nitroso-diphenylamine and Diphenylamine are therefore reported as Diphenylamine on all reports and forms . 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 34 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Qualifier Definition Report for DNMIO0l Energy Fuels Resources (USA), Inc . Client SDG: 635551 GEL Work Order: 635551 The Qualifiers in this report are defined as follows: * A quality control analyte recovery is outside of specified acceptance criteria ** Analyte is a surrogate compound NJ Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier U Analyte was analyzed for, but not detected above the CRDL. DL Indicates that sample is diluted. RA Indicates that sample is re-analyzed without re-extraction . RE Indicates that sample is re-extracted . Review N alidation GEL requires all analytical data to be verified by a qualified data reviewer. In addition, all CLP-like deliverables receive a third level review of the fractional data package. The following data validator verified the information presented in this data report: Signature: ~~ Date: 27 SEP 2023 Page 35 of 106 SDG: 635551 Name: Barbara Bailey Title: Data Validator GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Reoort Date: September 27, 2023 Energy Fuels Resources (USA), Inc. Page I of 15 225 Union Boulevard Suite 600 Lakewood, Colorado Contact: Ms. Kathy Weinel Workorder: 635551 Parmname NOM C Units RPO% REC% Rane Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 QC1205505480 LCS 1,2,4-Trichlorobenzene 50.0 36.4 ug/L 73 (43%-105%) LL2 09/05/23 22:41 1,2-Dichlorobenzene 50.0 36.8 ug/L 74 (40%-92%) 1,2-Diphenylhydrazine 50.0 49.2 ug/L 98 (50%-111 %) 1,3-Dichlorobenzene 50.0 34 .5 ug/L 69 (40%-89%) 1,4-Dichlorobenzene 50.0 35 .8 ug/L 72 (42%-92%) 1-Methylnaphthalene 50 .0 43.6 ug/L 87 (50%-111%) 2,4,5-Trich lorophenol 50.0 u ND ug/L 84 (50%-137%) 2,4,6-Trichlorophenol 50.0 42.2 ug/L 84 (50%-127%) 2,4-Dichlorophenol 50.0 37.0 ug/L 74 (50%-119%) 2,4-Dimethylphenol 50.0 31.7 ug/L 63 (46%-99%) 2,4-Dinitrophenol 50 .0 49 .0 ug/L 98 (28%-151%) 2,4-Dinitrotoluene 50.0 49.7 ug/L 99 (50%-134%) 2,6-Dinitrotoluene 50.0 50.7 ug/L 101 (59%-126%) Page 59 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 2 of 15 Parmname NOM Sam le C Units RPO% REC% Ran e Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 2-Chloronaphthalene 50.0 40.4 ug/L 81 (47%-108%) LL2 09/05/23 22:41 2-Chlorophenol 50.0 32.0 ug/L 64 (46%-107%) 2-Methyl-4,6-dinitrophenol 50.0 55.8 ug/L 112 (42%-149%) 2-Methylnaphthalene 50.0 43.7 ug/L 87 (48%-104%) 2-Nitrophenol 50.0 42.6 ug/L 85 (50%-115%) 4-Bromophenylphenylether 50.0 49.1 ug/L 98 (49%-114%) 4-Chloro-3-methylphenol 50.0 39.6 ug/L 79 (50%-118%) 4-Chlorophenylphenylether 50.0 50.3 ug/L IOI (56%-120%) 4-Nitrophenol 50.0 19.5 ug/L 39 (21%-110%) Acenaphthene 50.0 44.5 ug/L 89 (51%-109%) Acenaphthylene 50.0 42.5 ug/L 85 (51%-108%) Anthracene 50.0 48.4 ug/L 97 (56%-110%) Benzidine 100 51.9 ug/L 52 (13%-141%) Benzo( a )anthracene 50.0 46.2 ug/L 92 (50%-112%) Benzo(a)pyrene 50.0 47.1 ug/L 94 (55%-110%) Page 60 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 3 of 15 Parmname NOM SamJ!le C Units RPO% REC% Rane Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 Benzo(b )fluoranthene 50.0 47.8 ug/L 96 (54%-111%) LL2 09/05/23 22 :41 Benzo(ghi)perylene 50 .0 46.1 ug/L 92 (44%-133 %) Benzo(k)fluoranthene 50.0 47 .9 ug/L 96 (54%-117%) Butylbenzylphthalate 50.0 50 .5 ug/L IOI (54%-118 %) Chrysene 50.0 48 .7 ug/L 97 (59%-116%) Di-n-butylphthalate 50.0 52.3 ug/L 105 (55%-122%) Di-n-octylphthalate 50 .0 48.6 ug/L 97 (50 %-125%) Dibenzo( a,h)anthracene 50.0 44.4 ug/L 89 (42%-130%) Diethylphthalate 50 .0 50 .8 ug/L 102 (60%-121%) Dimethylphthalate 50.0 47 .5 ug/L 95 (62%-123%) Diphenylamine 50.0 45.2 ug/L 90 (48 %-117%) Fluoranthene 50.0 51.3 ug/L 103 (54%-121%) Fluorene 50.0 46.7 ug/L 93 (56%-1 I 1%) Hexachlorobenzene 50.0 u ND ug/L 89 (51%-118%) Hexachlorobutadiene 50.0 u ND ug/L 64 (39%-103%) Page 61 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 4 of 15 Parmname NOM Sam le C Units RPD% REC% Ran e Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 Hexachlorocyclopentadiene 50.0 25 .9 ug/L 52 (30%-95%) LL2 09/05/23 22 :41 Hexachloroethane 50.0 u ND ug/L 63 (36%-90%) Indeno(l ,2,3-cd)pyrene 50 .0 44.4 ug/L 89 (48%-128%) Isophorone 50.0 45.2 ug/L 90 (58%-113%) N-Methyl-N-nitrosomethylamine 50.0 26.7 ug/L 53 (32%-84%) N-Nitrosodipropylamine 50.0 46.2 ug/L 92 (49%-118%) Naphthalene 50 .0 39.9 ug/L 80 (49%-103%) Nitro benzene 50.0 u ND ug/L 87 (55%-110%) Pentachlorophenol 50.0 37 .3 ug/L 75 (42%-132%) Phenanthrene 50 .0 46.7 ug/L 93 (56%-110%) Phenol 50 .0 15.8 ug/L 32 (12%-90%) Pyrene 50 .0 46.7 ug/L 93 (43%-122%) Pyridine 50 .0 23.0 ug/L 46 (25%-90%) bis(2-Chloro-1-methylethyl)ether 50.0 46.3 ug/L 93 (42%-115%) bis(2-Chloroethoxy)methane 50.0 46.8 ug/L 94 (56%-108%) Page 62 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 5 of 15 Parmname NOM Sam C Units RPD% REC% Ran e Anlst Date Ti.me Semi-Volatile-GC/MS Batch 2486107 bis(2-Chloroethyl) ether 50.0 43.4 ug/L 87 (47%-108%) LL2 09/05/23 22 :41 bis(2-Ethylhexyl)phthalate 50.0 48.9 ug/L 98 (47%-118%) m,p-Cresols 50.0 u ND ug/L 57 (39%-95%) o-Cresol 50.0 u ND ug/L 59 (39%-102%) **2 ,4,6-Tribromophenol 100 86.4 ug/L 86 (37%-132%) **2-Fluorobiphenyl 50 .0 38.8 ug/L 78 (39%-112%) **2-Fluorophenol 100 35.8 ug/L 36 (11 %-79%) **N itrobenzene-d5 50 .0 38 .9 ug/L 78 (39%-112%) **Phenol-d5 100 28.7 ug/L 29 (15%-85%) **p-Terphenyl-dl4 50.0 42.3 ug/L 85 (24%-129%) QC1205505481 LCSD l ,2,4-Trichlorobenzene 50 .0 36.8 ug/L 74 (0%-30%) 09/05/23 23:03 l ,2-Dichlorobenzene 50.0 37.8 ug/L 3 76 (0%-30%) l ,2-Diphenylhydrazine 50.0 50.5 ug/L 3 101 (0%-30%) 1,3-Dichlorobenzene 50.0 36.5 ug/L 5 73 (0%-30%) l ,4-Dichlorobenzene 50.0 36.9 ug/L 3 74 (0%-30%) Page 63 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 6 of 15 Parmname NOM Sam le Units RPD% REC¾ Ran e Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 1-Methylnaphthalene 50.0 45.3 ug/L 4 91 (0%-30%) LL2 09/05/23 23 :03 2,4 ,5-Trichlorophenol 50 .0 u ND ug/L NI A 92 (0 %-27%) 2,4 ,6-Trichlorophenol 50.0 44.4 ug/L 5 89 (0%-28%) 2,4-Dichlorophenol 50.0 39 .8 ug/L 7 80 (0%-30%) 2,4-Dimethylphenol 50.0 32 .2 ug/L 2 64 (0%-30%) 2,4-Dinitrophenol 50.0 54.1 ug/L IO 108 (0%-30%) 2,4-Dinitrotoluene 50.0 53 .8 ug/L 8 108 (0%-32%) 2,6-Dinitrotoluene 50.0 51.2 ug/L 102 (0%-30%) 2-Chloronaphthalene 50.0 42.4 ug/L 5 85 (0%-30%) 2-Chlorophenol 50.0 35 .3 ug/L IO 71 (0%-30%) 2-Methyl-4,6-dinitrophenol 50.0 60.3 ug/L 8 121 (0%-30%) 2-Methylnaphthalene 50.0 43.3 ug/L 87 (0%-30%) 2-Nitrophenol 50.0 46.0 ug/L 8 92 (0 %-30%) 4-Bromophenylphenylether 50.0 50.9 ug/L 4 102 (0%-30%) 4-Chloro-3-methylphenol 50.0 42.9 ug/L 8 86 (0%-30%) Page 64 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 7 of 15 Parmname NOM Sam C Units RPO% REC% Rane Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 4-Chlorophenylphenylether 50.0 53.2 ug/L 6 106 (0%-30%) LL2 09/05 /23 23 :03 4-Nitrophenol 50 .0 19.6 ug/L 39 (0%-30%) Acenaphthene 50 .0 46 .6 ug/L 5 93 (0%-30%) Acenaphthylene 50 .0 44.2 ug/L 4 88 (0%-30%) Anthracene 50 .0 50 .3 ug/L 4 101 (0%-30%) Benzidine 100 49.5 ug/L 5 49 (0%-30%) Benzo( a )anthracene 50 .0 48.6 ug/L 5 97 (0%-30%) Benzo(a)pyrene 50 .0 49.4 ug/L 5 99 (0%-30%) Benzo(b )fluoranthene 50 .0 47.7 ug/L 0 95 (0%-30%) Benzo(ghi)perylene 50.0 47.9 ug/L 4 96 (0%-30%) Benzo(k)fluoranthene 50 .0 52 .0 ug/L 8 104 (0%-30%) Butylbenzylphthalate 50 .0 54 .0 ug/L 7 108 (0%-30%) Chrysene 50.0 51.4 ug/L 5 103 (0%-30%) Di-n-butylphthalate 50 .0 54.9 ug/L 5 110 (0%-30%) Di-n-octylphthalate 50.0 51.8 ug/L 6 104 (0%-30%) Page 65 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 8 of 15 Parmname NOM Sam le ual QC Units RPO% REC% Range Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 Dibenzo(a,h)anthracene 50.0 46 .3 ug/L 4 93 (0%-30%) LL2 09 105123 23 :03 Diethylphthalate 50 .0 52.9 ug/L 4 106 (0%-30%) Dimethylphthalate 50.0 49 .6 ug/L 4 99 (0%-30%) Diphenylamine 50 .0 47.6 ug/L 5 95 (0%-30%) Fluoranthene 50 .0 53 .9 ug/L 5 108 (0 %-30%) Fluorene 50 .0 50.0 ug/L 7 100 (0%-30%) Hexachlorobenzene 50 .0 u ND uglL NIA 92 (0%-25%) Hexachlorobutadiene 50 .0 u ND ug/L NIA 68 (0 %-28 %) Hexachlorocyclopentadiene 50 .0 28.4 ug/L 9 57 (0%-30%) Hexachloroethane 50 .0 u ND ug/L NIA 66 (0%-29%) Indeno( 1,2 ,3-cd)pyrene 50.0 46.5 ug/L 5 93 (0%-30%) Isophorone 50 .0 47 .0 ug/L 4 94 (0%-30%) N-Methyl-N-nitrosomethylamine 50 .0 28 .9 ug/L 8 58 (0%-30%) N-Nitrosodipropylamine 50 .0 46 .7 ug/L 93 (0%-30%) Naphthalene 50 .0 40.9 ug/L 2 82 (0%-30%) Page 66 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 9 of 15 Parmname NOM Sam Units RPD% REC% Rane Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 Nitro benzene 50.0 u ND ug/L NIA 86 (0%-28%) LL2 09105123 23 :03 Pentachlorophenol 50.0 38.7 ug/L 4 77 (0%-33%) Phenanthrene 50.0 48.9 ug/L 5 98 (0%-30%) Phenol 50.0 16.5 ug/L 4 33 (0%-30%) Pyrene 50.0 49.2 ug/L 5 98 (0%-30%) Pyridine 50.0 23.3 ug/L 47 (0%-154%) bis(2-Chloro-l-methylethyl)ether 50.0 48.1 ug/L 4 96 (0%-30%) bis(2-Chloroethoxy)methane 50.0 48.2 ug/L 3 96 (0%-30%) bis(2-Chloroethyl) ether 50.0 45 .2 ug/L 4 90 (0%-30%) bis(2-Ethylhexyl)phthalate 50.0 52.2 ug/L 6 104 (0%-30%) m,p-Cresols 50.0 u ND ug/L NIA 62 (0%-34%) o-Cresol 50.0 u ND ug/L NIA 67 (0%-36%) * *2,4,6-Tribromophenol 100 89.3 ug/L 89 (37%-132%) **2-Fluorobiphenyl 50.0 40.1 ug/L 80 (39%-112%) **2-Fluorophenol 100 38.4 ug/L 38 (11%-79%) Page 67 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston , SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 10 of 15 Parmname NOM Units RPD% REC% Ran e Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 **Nitrobenzene-d5 50 .0 39.2 ug/L 78 (39%-112%) LL2 09/05 /23 23:03 **Phenol-d5 100 29.1 ug/L 29 (15%-85%) **p-Terphenyl-d14 50.0 44.2 ug/L 88 (24%-129%) QCl205505479 MB 1,2,4-Trichlorobenzene u ND ug/L 09/05 /23 22 : 19 1,2-Dichlorobenzene u ND ug/L 1,2-Diphenylhydrazine u ND ug/L 1,3-Dichlorobenzene u ND ug/L 1,4-Dichlorobenzene u ND ug/L 1-Methylnaphthalene u ND ug/L 2,4,5-Trichlorophenol u ND ug/L 2,4,6-Trichlorophenol u ND ug/L 2,4-Dichlorophenol u ND ug/L 2,4-Dimethylphenol u ND ug/L 2,4-Dinitrophenol u ND ug/L 2,4-Dinitrotoluene u ND ug/L Page 68 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston , SC 29407 -(843) 556-8171 -www .gel.com QC Summary Workorder: 635551 Page 11 of 15 Parmname NOM C Units RPO% REC% Ran e Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 2,6-Dinitrotoluene u ND ug/L LL2 09/05/23 22 : I 9 2-Chloronaphthalene u ND ug/L 2-Chlorophenol u ND ug/L 2-Methyl-4,6-dinitrophenol u ND ug/L 2-Methylnaphthalene u ND ug/L 2-Nitrophenol u ND ug/L 3,3'-Dimethylbenzidine u ND ug/L 4-Bromophenylphenylether u ND ug/L 4-Chloro-3-methylphenol u ND ug/L 4-Chlorophenylphenylether u ND ug/L 4-Nitrophenol u ND ug/L Acenaphthene u ND ug/L Acenaphthylene u ND ug/L Anthracene u ND ug/L Benzi dine u ND ug/L Page 69 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www .gel.com QC Summary Workorder: 635551 Page 12 of 15 Parmname NOM C Units RPD% REC% Rane Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 Benzo( a )anthracene u ND ug/L LL2 09/05/23 22 : 19 Benzo(a)pyrene u ND ug/L Benzo(b )fluoranthene u ND ug/L Benzo(ghi)perylene u ND ug/L Benzo(k)fluoranthene u ND ug/L Butylbenzylphthalate u ND ug/L Chrysene u ND ug/L Di-n-butylphthalate u ND ug/L Di-n-octylphthalate u ND ug/L Dibenzo(a,h)anthracene u ND ug/L Diethylphthalate u ND ug/L Dimethylphthalate u ND ug/L Diphenylamine u ND ug/L Fluoranthene u ND ug/L Fluorene u ND ug/L Page 70 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 13 of 15 Parmname NOM Sam C Units RPD% REC% Rane Anlst Date Time Semi-Volatile-GC/MS Batch 2486107 Hexachlorobenzene u ND ug/L LL2 09/05/23 22 :19 Hexachlorobutadiene u ND ug/L Hexachlorocyclopentadiene u ND ug/L Hexachloroethane u ND ug/L Indeno( 1,2,3-cd)pyrene u ND ug/L Isophorone u ND ug/L N-Methyl-N-nitrosomethylamine u ND ug/L N-Nitrosodipropylamine u ND ug/L Naphthalene u ND ug/L Nitro benzene u ND ug/L Pentachlorophenol u ND ug/L Phenanthrene u ND ug/L Phenol u ND ug/L Pyrene u ND ug/L Pyridine u ND ug/L Page 71 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston , SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 14 of 15 Parmname NOM Sam le C Units RPO% REC% Ran e Anlst Date Time Semi-Volatile-GC/MS Batch 24 86107 bis(2-Chloro-l-methylethyl)ether u ND ug/L LL2 09 /05 /23 22 : I 9 bis(2-Chioroethoxy)methane u ND ug/L bis(2-Chioroethyl) ether u ND ug/L bis(2-Ethylhexyl)phthaiate u ND ug/L m,p-Cresols u ND ug/L o-Cresoi u ND ug/L **2,4,6-Tribromophenol 100 76 .8 ug/L 77 (37%-132%) **2-Fluorobiphenyl 50 .0 34 .3 ug/L 69 (39 %-112 %) **2-Fluorophenol 100 32 .0 ug/L 32 (11%-79%) **Nitrobenzene-d5 50.0 31.5 ug/L 63 (39%-112%) **Phenol-d5 100 24 .9 ug/L 25 (15%-85%) **p-Terphenyl-dl4 50 .0 36 .6 ug/L 73 (24%-129 %) Notes: The Qualifiers in this report are defined as follows: P Organics--The concentrations between the primary and confirmation columns/detectors is >40% different. For HPLC , difference is also <70% C Analyte has been confirmed by GC/MS analysis B For General Chemistry and Organic analysis the target analyte was detected in the associated blank. E Organics--Concentration of the target analyte exceeds the instrument calibration range A The TIC is a suspected aldol-condensation product Page 72 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 15 of 15 Parmname NOM Sam le Units RPO% REC% Ran e Anlst Date Time X Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier N Organics--Presumptive evidence based on mass spectral library search to make a tentative identification of the analyte (TIC). Quantitation is based on nearest internal standard response factor H Analytical holding time was exceeded ** < > y h R I\ D Analyte is a surrogate compound Result is less than value reported Result is greater than value reported QC Samples were not spiked with this compound Preparation or preservation holding time was exceeded Sample results are rejected RPO of sample and duplicate evaluated using +I-RL. Concentrations are <5X the RL. Qualifier Not Applicable for Radiochemistry. Results are reported from a diluted aliquot of the sample N I A RPO or %Recovery limits do not apply. ND Analyte concentration is not detected above the detection limit NJ Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier F Estimated Value M Matrix Related Failure JNX Non Calibrated Compound UJ Compound cannot be extracted Q One or more quality control criteria have not been met. Refer to the applicable narrative or DER. NI See case narrative U Analyte was analyzed for, but not detected above the CRDL. NIA indicates that spike recovery limits do not apply when sample concentration exceeds spike cone. by a factor of 4 or more or ¾RPD not applicable . A The Relative Percent Difference (RPO) obtained from the sample duplicate (DUP) is evaluated against the acceptance 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 +I-the RL is used to evaluate the DUP result. * Indicates that a Quality Control parameter was not within specifications. 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 73 of 106 SDG: 635551 Product: Specific Gravity Ana Mica.I Method: ASTM D 5057 General Chemistry Technical Case Narrative Energy Fuels Resources SDG #: 635551 nalytical Procedure: GL-GC-E-065 REV# 7 nalytical Batch: 2487026 The following samples were analyzed using the above methods and analytical procedure(s). GEL Sample ID# 635551001 635551002 635551003 635551004 635551005 635551006 635551007 Client Sampleldentification Cell 1 Slimes #2 Cell 4A Cell 4A LDS Cell 4B Cell 4B LDS Cell 65 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. 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 74 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Qualifier Definition Report for DNMI00l Energy Fuels Resources (USA), Inc. Client SDG: 635551 GEL Work Order: 635551 The Qualifiers in this report are defined as follows: * A quality control analyte recovery is outside of specified acceptance criteria ** Analyte is a surrogate compound ReviewNalidation GEL requires all analytical data to be verified by a qualified data reviewer. In addition, all CLP-like deliverables receive a third level review of the fractional data package . The following data validator verified the information presented in this data report : Signature: ~ ~ Name: Jennifer Dunagan Jones Date: 28 SEP 2023 Title: Analyst II Page 75 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston , SC 29407 -(843) 556-8171 -www.gel.com QC Summary Reoort Date: September 28, 2023 Energy Fuels Resources (USA), Inc. Page I of 3 225 Union Boulevard Suite 600 Lakewood, Colorado Contact: Ms. Kathy Weinel Workorder: 635551 Parmname NOM C Units RPD¾ REC% Rane Anlst Date Time High Rad Testing Batch 2488333 QCl205519455 LCS Gross Radium Alpha 536 525 pCi/L 97 .8 (75%-125%) HXB2 09/18/23 16:24 Uncertainty +/-29 .0 QC1205519456 LCSD Gross Radium Alpha 536 513 pCi/L 2 .23 95 .7 (0%-20%) 09/18/23 16 :24 Uncertainty +/-29 .5 QC1205519454 MB Gross Radium Alpha 56 .3 pCi/L 09 /18/23 16:24 Uncertainty +/-9 .76 Batch 2488334 QC1205520164 LCS Radium-226 27.4 22.5 pCi/L 82 .2 (75%-125%) LXPI 09/24/23 09:28 Uncertainty +/-0.908 QCl205520165 LCSD Radium-226 27.4 30 .9 pCi/L 31.2* 113 (0%-20%) 09/24/23 09 :28 Uncertainty +/-1 .08 QC1205520163 MB Radium-226 u 0 .506 pCi/L 09/24/23 09:28 Uncertainty +/-0.191 Batch 2496263 QC120552441 I 635551001 DUP Thorium-228 129 97 .3 pCi/L 28.4* (0%-20%) VS! 09/22/23 07 :51 Uncertainty +/-15 .3 +/-18 .9 Thorium-230 68100 71000 pCi/L 4.13 (0%-20%) Uncertainty +/-341 +/-484 Thorium-232 359 369 pCi/L 2.61 (0%-20%) Uncertainty +/-24.8 +/-35 .0 QCl205524412 LCS Thorium-228 47.1 pCi/L 09/22/23 07 :51 Uncertainty +/-2 .98 Page 104 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Page 2 of 3 Parmname NOM Sam le ual QC Units RPO% REC% Range Anlst Date Time High Rad Testing Batch 2496263 Thorium-230 9.39 pCi/L (75%-125%) VS! 09/22/23 07 :51 Uncertainty +/-1.36 Thorium-232 49 .6 54 .2 pCi/L 109 (75%-125%) Uncertainty +/-3.18 QC1205524410 MB Thorium-228 u -0.149 pCi/L 09/22/23 07:51 Uncertainty +/-0 .339 Thorium-230 4 .88 pCi/L Uncertainty +/-I.II Thorium-232 u -0.0216 pCi/L Uncertainty +/-0.222 Batch 2496264 QC1205524416 635551001 DUP Uranium-233 /234 30600 38000 pCi/L 21 .5* (0%-20%) VS! 09/25/23 09:29 Uncertainty +/-713 +/-915 Uranium-235 /236 2110 2990 pCi/L 34.8* (0%-20%) Uncertainty +/-209 +/-287 Uranium-238 32900 39500 pCi/L 18 .2 (0%-20%) Uncertainty +/-738 +/-933 QC 12055244 l 7 LCS Uranium-233/234 62.7 pCi/L 09/22/23 08 :07 Uncertainty +/-3.07 Uranium-235/2 36 4.77 pCi/L Uncertainty +/-0.955 Uranium-238 67.0 66 .3 pCi/L 99 (75%-125%) Uncertainty +/-3.14 QC1205524415 MB Uranium-233/234 u -0.152 pCi/L 09/22/23 08 :06 Uncertainty +/-0.396 Uranium-235/236 u 0 .720 pCi/L Uncertainty +/-0.529 Uranium-238 u 0.852 pCi/L Uncertainty +/-0.529 Page 105 of 106 SDG: 63 5551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com QC Summary Workorder: 635551 Parm.name NOM Notes: Counting Uncertainty is calculated at the 68% confidence level (1-sigma). The Qualifiers in this report are defined as follows: Analyte has been confirmed by GC/MS analysis C Units RPO% C B A X H For General Chemistry and Organic analysis the target analyte was detected in the associated blank. The TIC is a suspected aldol-condensation product ** < > UI BD y h R Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Analytical holding time was exceeded Analyte is a surrogate compound Result is less than value reported Result is greater than value reported Gamma Spectroscopy--Uncertain identification Results are either below the MDC or tracer recovery is low QC Samples were not spiked with this compound Preparation or preservation holding time was exceeded Sample results are rejected REC% Ran e Anlst A D RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL. Qualifier Not Applicable for Radiochemistry. Results are reported from a diluted aliquot of the sample NIA RPD or %Recovery limits do not apply. ND Analyte concentration is not detected above the detection limit M M if above MDC and less than LLD NJ Consult Case Narrative , Data Summary package, or Project Manager concerning this qualifier F Estimated Value M Matrix Related Failure UJ Gamma Spectroscopy--Uncertain identification Q One or more quality control criteria have not been met. Refer to the applicable narrative or DER. K Analyte present. Reported value may be biased high. Actual value is expected to be lower. UL Not considered detected. The associated number is the reported concentration, which may be inaccurate due to a low bias. L Analyte present. Reported value may be biased low . Actual value is expected to be higher. NI See case narrative U Analyte was analyzed for , but not detected above the CRDL. Page 3 of 3 Date Time N I A indicates that spike recovery limits do not apply when sample concentration exceeds spike cone. by a factor of 4 or more or ¾RPO not applicable. " The Relative Percent Difference (RPD) obtained from the sample duplicate (DUP) is evaluated against the acceptance 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. * Indicates that a Quality Control parameter was not within specifications. For PS, PSD, and SDIL T 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 106 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston, SC 29407 -(843) 556-8171 -www.gel.com Contact: Workorder: Parmname Notes: Energy Fuels Resources (USA), Inc. 225 Union Boulevard Suite 600 Lakewood, Colorado Ms. Kathy Weinel 635551 NOM The Qualifiers in this report are defined as follows: Analyte has been confirmed by GC/MS analysis QC Summary ual QC nits RPO% C B A X H For General Chemistry and Organic analysis the target analyte was detected in the associated blank. The TIC is a suspected aldol-condensation product ** < > y h R z d Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier Analytical holding time was exceeded Analyte is a surrogate compound Result is less than value reported Result is greater than value reported QC Samples were not spiked with this compound Preparation or preservation holding time was exceeded Sample results are rejected Paint Filter Test--Particulates passed through the filter, however no free liquids were observed. 5-day BOD--The 2: I depletion requirement was not met for this sample Reoort Date: September 28, 2023 REC% Range Anlst A D RPD of sample and duplicate evaluated using +/-RL. Concentrations are <5X the RL. Qualifier Not Applicable for Radiochemistry. Results are reported from a diluted aliquot of the sample NIA RPD or %Recovery limits do not apply. ND Analyte concentration is not detected above the detection limit NJ Consult Case Narrative, Data Summary package, or Project Manager concerning this qualifier F Estimated Value M Matrix Related Failure E General Chemistry--Concentration of the target analyte exceeds the instrument calibration range Q One or more quality control criteria have not been met. Refer to the applicable narrative or DER. N 1 See case narrative U Analyte was analyzed for, but not detected above the CRDL. Page 1 of 1 Date Time NIA indicates that pike recovery limits do not app ly when sample concentration exceeds spike cone. by a factor of 4 or more or ¾RPD not applicable. "The Re:lati ve Percent Differen ce (RPD) obtained from the sample dup licate (DUP) is evaluated against the acceptance criteria when the sample is greater than five times (5X) the contract required detection 'limit (RL). In cases where either 1h e sample or duplicate value is less than 5X the RL , a control limit of+/-the RL is used to evaluate the DUP result. * Indicates that a Quality Control parameter was not within specifications. For PS , PSD, and SOIL T results , the va lues li sted arc 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 83 of 106 SDG: 635551 Radiochemistry Technical Case Narrative Energy Fuels Resources SDG #: 635551 Product: Alphaspec Th, Liquid Analytical Method: DOE EML HASL-300, Th-01-RC Modified Analytical Procedure: GL-RAD-A-038 REV# I 8 Analvtical Batch: 2496263 Composite P.reparation Method: GL-RAD -A-026 Composite Preparation Procedure: GL-RAD-A-026 REV# 18 Composite Preparation Batch: 2486541 The following samples were analyzed using the above methods and analytical procedure(s). Client Sample Identification CeJ l 1 Slimes #2 Cell 4A Cell4A LDS Cell 4B Cell 4B LDS Cell 65 Method Blank (MB) GEL Sample ID# 635551001 635551002 635551003 635551004 635551005 635551006 635551007 1205524410 1205524411 1205524412 63555100l(Cell 1) Sample Duplicate (DUP) Laboratory Control Sample (LCS) The samples in this SDG were analyzed on an "as received" basis. Data Summary: All samp le data provided in this report met the acceptance criteria specified in the analytical methods and procedures for inilial calibration , continuing calibration, instrument controls and process controls where applicable with the following exceptions. Oualitv Control (QC) Information Method Blank Criteria The blank (See Below) activity is greater than the MDC but is less than five percent of the lowest activity in the batch. Sample Analyte Value 1205524410 (MB) Thorium-230 Result: 4.88 pCi/L > MDA: 1.82 pCi/L > RDL: 1.00 pCi/L 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 Page 84 of 106 SDG: 635551 I 1205524411 (Cell lDUP) j Thorium-228 j RPD 28.4* (0.00%-20 .00%) RER 1.07 (0-3) I RDLMet The blank (See Below) did not meet the detection limit due to keeping the blank volume consistent with the other sample aliquots . Sample Analyte Value 1205524410 (MB) Thorium-228 Result -0. l 49 < MDA I .68 > RDL I pCi/L Sample (See Below) did not meet the detection limit due to the small sample aliquot used. The aliquot was reduced due to the high activity of other isotopes and in attempt to minimize int erference . Sample Analyte Value 635551002 (Slimes #2) Thorium-232 Result 2.13 < MDA 2.6 > RDL 1 pCi/L Technical Information Sample Re-prep/Re-analysis Samples were reprepped due to high carrier/tracer yield. The re-analysis is being reported. Miscellaneous Jnformation Manual Integration Manual integrations of alpha spectroscopy spectra 635551002 (S limes #2), 635551003 (Cell 4A), 635551005 (Cell 4B) and 635551007 (Ce ll 65) were performed to fully se parate counts in Regions of Interest which would hav e been biased. Product: U-233/234,U-235/236 and U-238 Analvtical Method: DOE EML HASL-300, U-02-RC Modified Analytical Procedure: GL-RAD-A-011 REV# 28 Analvtical Batch: 2496264 Composite Preparation Method: GL-RAD-A-026 Composite Preparation Procedure: GL-RA-D-A-026 REV# 18 Composite Preparation Batch: 248654 1 The following samples were analyzed using the above methods and analytical procedure(s). GEL Sample ID# 635551001 635551002 635551003 635551004 635551005 635551006 635551007 Page 85 of 106 Client Sample Identification Cell 1 Slimes #2 Cell 4A Cell 4A LDS Cell 4B Cell 4B LDS Cell 65 SDG: 635551 Method Blank (MB) 1205524415 1205524416 1205524417 635551001(Cell I) Sample Duplicate (DUP) Laboratory Control Sample (LCS) 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 . Quality Control (OC) 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 1205524416 (Cell lDUP) Uranium-233 /234 RPD 21.5 * (0 .00%-20.00%) RER 1.37 (0-3) Uranium-235 /236 RPD 34 .8* (0 .00 %-20 .00 %) RER 1.67 (0-3) RDLMet The blank (See Below) did not meet the detection limit due to keeping the blank volume consistent with the other sample aliquots. Sample Analyte Value 1205524415 (MB) Uranium-233 /234 Result -0.152 < MDA 1.87 > RDL 1 pCi/L Technical Information Sample Re-prep/Re-analysis Samples were reprepped due to low carrier/tracer yield . The re-analysis is being reported . Recounts Sample 635551007 (Cell 65) was recounted due to a peak shift . The recount is reported . Samples 1205524416 (Cell lDUP) and 63555I001 (Cell 1) were recounted due to high relative percent difference/relative error ratio. The samples were recounted again due to peak shifts and the third counts are reported. Product: GFPC,Total Alpha Radium, Liquid naJvtical Method: EPA 903 .0 Analvtical Procedure: GL-RAD-A-010 REV# 21 Analytical Batch: 2488333 Composite Preparation Method: GL-RAD-A-026 Composite Preparation Procedure: GL-RAD-A-026 REV# 18 Composite Preparation Batch: 2486541 Page 86 of 106 SDG: 635551 The following samples were analyzed using the above methods and analytical procedure(s). Client ample Identification Ce ll I Slimes #2 Cell 4A Cell 4A LDS Cell 4B Cell 4B LDS Cell 65 Method Blank (MB) Laboratory Control Sample (LCS) GEL Sample ID# 635551001 635551002 635551003 635551004 635551005 635551006 635551007 1205519454 1205519455 1205519456 Laboratory Control Sample Duplicate (LCSD) 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, con tinuin g calibration, instrument controls and process controls where applicable, with lhe fo llowin g excep tions. Quality Co ntrol (QC) Information Method Blank Criteria The blank (See Below) activity is greater than the MDC but is less than five percent of the lowest activity in the batch. Sample Analyte Value 1205519454 (MB) Gross Radium Alpha Result: 56 .3 pCi/L > MDA: 8.10 pCi/L > RDL: 1.00 pCi/L Product: Lucas CeU Ra226, 1.iquid Analytica l Method: EPA 903.1 Modified Ana lvtical Procedure: GL-RAD-A-008 REV# 15 Analvtical Batch: 2488334 Composite Preparation Method: GL-RAD-A-026 Composite Preparation Procedure: GL-RAD-A-026 REV# 18 Composite Preparation Batch: 2486541 The following samples were analyzed using the above methods and analytical procedure(s). GEL Sample ID# 635551001 635551002 635551003 635551004 635551005 Page 87 of 106 Client Sample Identification Cell I Slimes #2 Cell 4A Cell 4A LDS Cell 4B SDG: 635551 635551006 635551007 1205520163 1205520164 1205520165 Cell 4B LDS Cell 65 Method Blank (MB) Laboratory Control Sample (LCS) Laboratory Control Sample Duplicate (LCSD) 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. Oualitv Control (OC) Information Duplication Criteria beh een LCS and LCSD The Laboratory Control Sample and Laboratory Co ntrol Sample 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 and the spike recovery limit. Sample Analyte Value 1205520164 (LCS) and 1205520165 (LCSD) Radium-226 RPD 31.2* (0%-20%) RER 2.57 (0-3) 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 88 of 106 SDG: 635551 GEL LABORATORIES LLC 2040 Savage Road Charleston SC 29407 -(843) 556-8171 -www.gel.com Qualifier Definition Report for DNMI00l Energy Fuels Resources (USA), Inc. Client SDG: 635551 GEL Work Order: 635551 The Qualifi ers in this report a re defined as follow s : * A q ual ity conlrol ana lyte rec overy is o ut side of spec ified acceptance criteria ** A nalyte is a s urrogate compound U Ana lyte was ana lyzed for but no t de tecte d above the CRDL. ReviewNalidation GEL requires all analytical data to be verified by a qualified data reviewer. In addition, all CLP-like deliverables receive a third level review of the fractional data package . The following data validator verified the information presented in this data report: Signature: j~ ~ Name: Theresa Austin Date: 28 SEP 2023 Title: Analyst Ill -Data Validator Page 89 of 106 SDG: 635551 'fabD Chemical and Radiological Summary Tables Cell I Chemical and Radiological Characteristics Constituent 1987 2003 2007 2008 2009 2010 2011 2012 2013 2013 2014 2015 2016 2017 2018 2018 2019 2020 2021 Resample Res11mple Major Ions (mg/L) Carbonate <5 <l ND ND <l <l <l <l <l NS <l <l <l <l <l NS <5 <5 <5 Bicarbonate <5 NA ND ND <l <l <l <l <l NS <l <l <l <l <l NS <5 <5 <5 Calcium 630 307 483.8 604 635 711 577 426 768 NS 404 573 647 581 518 NS 720 618 234 Chloride 8000 6728 37340 9830 20700 7440 33800 78000 9900 NS 11600 25500 19200 19900 39300 NS 19800 40000 74700 Fluoride <100 3005 31.72 0.3 0.4 28.4 69.2 62.9 4130 NS 2380 5880 2980 4290 5020 NS 3480 7460 14900 Magnesium 7900 5988 21220 6550 16200 5410 14300 16000 4470 NS 5530 12400 9210 9380 20800 NS 9200 12300 19800 Nitrogen-Ammonia 7800 3353 10628 5250 15200 8120 12900 9750 3900 NS 5700 5.4 7090 1040 9810 NS 10400 10600 5850 Nitrogen-Nitrate <100 41.8 269.4 64.9 142 58 212 556 128 NS 53 192 124 152 328 NS 118 191 27 Potassium NA 647 5698 1880 4140 1840 4510 9750 6580 NS 3010 7330 1970 2700 4790 NS 2600 4580 4030 Sodium 10000 8638 62600 13200 39000 16700 29500 41700 15900 NS 12200 32100 18900 23900 53500 NS 28000 62900 91900 Sulfate 190000 63667 287600 118000 232000 107000 182000 158000 100000 NS 124000 204000 212000 165000 253000 NS 169000 222000 351000 pH (s.u.) 0.70 1.88 0.80 1.53 1.15 2.73 2.23 1.90 2.74 NS 1.30 1.01 <1.00 <1.00 <1.00 NS 1.14 0.92 0.4 TDS 120000 94700 357400 131000 140000 130000 216000 342000 149000 NS 159000 334000 242000 231000 361000 NS 257000 422000 584000 Conductivity (umhos/cm) NA NA NA NA 365000 110000 112000 136000 94200 NS 113000 131000 123000 57600 110000 NS 119000 81500 76000 Metals (ug/L) Arsenic 440000 121267 849000 271000 436000 74400 299000 25500 9800 NS 249000 377000 407000 391000 641000 NS 270000 599000 1040000 Beryllium 780 475 2262 500 410 338 1270 3180 415 NS 448 1290 1030 749 1510 NS 930 1330 3660 Cadmium 6600 3990 29320 8790 9120 2940 13700 30700 2380 NS 3060 7710 6320 6730 14000 NS 5400 9070 21300 Chromium 13000 6365 29940 6760 18700 5620 22700 12100 8350 NS 13200 19600 14000 15900 21100 NS 15000 25700 29600 Cobalt 120000 NA 88240 23500 97500 16200 56000 53100 25500 NS 56500 82000 77200 91400 113000 NS 66000 51400 59500 Copper 740000 196667 881000 360000 168000 125000 483000 885000 544000 NS 3420000 3560000 4730000 3440000 4550000 NS 1700000 2110000 3760000 Iron 3400000 2820000 13480000 3280000 2390000 3400000 8940000 840000 1420000 NS 2520000 6680000 5650000 2300000 12200000 NS 9100000 15400000 6680000 Lead <20000 3393 27420 11200 10600 9240 23600 17000 2810 NS 13500 16800 22500 23000 41000 NS 22000 42400 91200 Manganese 140000 162500 990200 206000 723000 173000 735000 1560000 188000 NS 162000 515000 713000 510000 936000 NS 540000 833000 1630000 Mercury NA NA ND ND 7.61 7.2 61.4 117 6.16 NS 12.5 24.6 8.59 7.86 16.8 NS 3.7 14 35 Molybdenum 240000 50550 415600 106000 142000 35300 235000 434000 16800 NS 68800 127000 97100 128000 239000 NS 120000 247000 418000 Nickel 370000 36950 40860 32000 156000 27500 43700 15000 39100 NS 129000 130000 170000 183000 167000 NS 110000 27100 18400 Selenium <20000 1862 15420 13000 14800 5220 11600 8090 2690 NS 3970 7070 3950 5070 10700 NS 10000 16600 21800 Silver <5000 NA 1559.2 449 558 155 1110 4310 329 NS 336 1390 1240 1240 2320 NS 790 1290 2640 Thallium 45000 NA 407.8 165 387 193 560 13 63.3 NS 876 1130 754 155 442 NS <700 <50 1680 Tin <5000 NA 6512 1240 2290 263 1500 <100 <100 NS <17000 <100 <17000 <17000 <17000 NS 540 1220 1820 Uranium 105000 134517 788600 416000 578000 159000 838000 1450000 140000 NS 137000 363000 131000 102000 248000 NS 81000 200000 655000 Vanadium 280000 348000 2208200 1200000 773000 752000 2500000 1940000 98200 NS 485000 1130000 746000 1520000 2440000 NS 1400000 2090000 4410000 Zinc 1300000 NA 642940 476000 229000 171000 398000 811000 228000 NS 229000 638000 448000 515000 948000 NS 550000 396000 905000 Radiologies (pCi/L) 735000 Gross Alpha NA 1693331 29380 21900 16500 11300 3610 12600 32700 NS 331000 (8/4/2015) 420000 191000 550000 NS 326000 83800 24600 73800 (5/28/2015) Cell I Chemical and Radiological Characteristics Constituent 1987 2003 2007 2008 2009 2010 2011 2012 2013 2013 2014 2015 2016 2017 2018 2018 2019 2020 2021 Resample Resample VOCS(ug/L) Acetone 35 NA 66.5 110 710 260 80 310 41.1 NS <700 56 40.6 28 50.4 NS 28 32.6 152 Benzene <5 NA ND ND <1 <1 <1 <1 <1 NS <5.0 <1 <1 <1 <1 NS <1 <1 <5 Carbon tetrachloride <5 NA ND ND <1 <1 <1 <1 <1 NS <5.0 <I <I <I <I NS <I <I <5 Chloroform 8 NA 6.7 6.6 16 4.9 13 19 7.62 NS <70.0 5.54 <I 3.42 114 NS 7.5 2.84 46.2 Chloromethane NA NA ND 9.4 11 4.4 3.6 4 5 NS <30.0 1.93 <I 1.13 1.16 NS 2.3 1.49 <5 MEK NA NA ND ND 120 65 <I 200 <20 NS <4000 <20 <20 <20 <20 NS 11 J 6.41 <25 Methylene Chloride 11 NA ND ND 2 <I <I 2 <I NS <5.0 1.83 <I 1.09 2.41 NS <I <5 <25 Naphthalene <10000 NA <10 ND 1.1 5.4 2 3 <I NS <100 <I <I <I <I NS <I <I <5 Tetrahydrofuran NA NA 150 <20 <100 <10 <500 2.9 <l NS <46.0 <I <I <I 4.93 NS <35 <5 <25 Toluene <5 NA ND ND <I <I <I <I <l NS <1000 <I <I <I <I NS <I <I <5 Xylenes <5 NA ND ND <I <I <I <I <I NS <10000 <I <I <I <I NS <I <3 <15 SVOCS (ug/L) 1,2,4-Trichlorobenzene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <IO <10 <148 <8.04 <10 <30 <37.5 1,2-Dichlorobenzene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <IO <10 <10 <IO <148 <8.04 <10 <30 <37.5 1,3-Dichlorobenzene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 1,4-Dichlorobenzene NA NA NA NA <50 <IO <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 1-Methylnaphthalene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <IO <IO <148 <8.04 <10 <3.0 <3.75 2,4,5-Trichlorophenol NA NA NA NA <50 <10 <10 <10 <10.8 <IO <10 <10 <10 <IO <148 <8.04 <IO <30 <37.5 2,4,6-Trichlorophenol NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <IO <148 <8.04 <IO <30 <37.5 2 ,4-Dichlorophenol NA NA NA NA <50 <10 <10 <10 <10.8 <IO <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 2,4-Dimethylphenol NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 2,4-Dinitrophenol NA NA NA NA <250 <20 <20 <20 <21.6 <20 <20 <20 <10 <10 <148 <8.04 <50 <50 <62.5 2,4-Dinitrotoluene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 2, 6-Dinitroto luene NA NA NA NA <50 <10 <10 <10 <10.8 <IO <10 <10 <10 <10 <148 <8.04 <IO <30 <37.5 2-Chloronaphthalene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <4.1 <5.13 2-Chlorophenol NA NA NA NA <50 <10 <10 <10 <10.8 <IO <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 2-Methylnaphthalene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 2-Methylphenol NA NA NA NA <50 <10 <10 <10 <10.8 <IO <10 <IO <10 <10 <148 <8.04 <10 <30 <37.5 2-Nitrophenol NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 3&4-Methylphenol NA NA NA NA <22 <10 <10 <IO <10.8 <IO <10 <IO <10 <10 <148 <8.04 <10 <37 <46.3 3 ,3-Dichlorobenzidine NA NA NA NA <100 <10 <IO <10 <10.8 <10 <10 <10 <IO <10 <148 <8.04 <50 <33 <41.3 4,6-Dinitro-2-NA NA NA NA <250 <10 <10 <IO <10.8 <10 <10 <10 <IO <10 <148 <8.04 <50 <30 <37.5 methylphenol 4-Bromophenyl phenyl NA NA NA NA <50 <IO <IO <10 <10.8 <IO <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 ether 4-Chloro-3-methylphenol NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <IO <IO <148 <8.04 <10 <30 <37.5 4-Chlorophenyl phenyl NA NA NA NA <50 <IO <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 ether 4-N itropheno 1 NA NA NA NA <250 <10 <10 <IO <10.8 <IO <10 <10 <10 <10 <148 <8.04 <50 <30 <37.5 Acenaphthene NA NA NA NA <50 <10 <10 <IO <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 Acenaphthylene NA NA NA NA <50 <10 <10 <IO <10.8 <10 <IO <10 <10 <10 <148 <8.04 <10 <3 <3.75 Anthracene NA NA NA NA <50 <10 <IO <10 <10.8 <IO <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 Azobenzene NA NA NA NA <50 <IO <10 <IO <10.8 <10 <IO <IO <10 <10 <148 <8.04 <10 <30 <37.5 Cell 1 Chemical and Radiological Characteristics Constituent 1987 2003 2007 2008 2009 2010 2011 2012 2013 2013 2014 2015 2016 2017 2018 2018 2019 2020 2021 Resample Resample Benz( a)anthracene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 Benzidine NA NA NA NA <100 <10 <10 <10 <10.8 <10 41 <10 <10 <10 <148 <8.04 <100 <39 <48.8 Benzo (a)pyrene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8 .04 <10 <3 <3 .75 Benzo(b )fluoranthene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8 .04 <10 <3 <3 .75 Benzo(g,h,i)perylene NA NA NA NA <50 <10 <10 <10 <10 .8 <10 <10 <10 <10 <10 <148 <8 .04 <10 <3 <3 .75 Benzo(k)fluoranthene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3 .75 B is(2-chloroethoxy) NA methane NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <37.5 Bis(2-chloroethyl) ether NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 B is(2-chloroisopropy 1) NA NA NA NA ether <50 <10 <10 <IO <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37 .5 Bis(2-ethylhexyl) NA phthalate NA NA NA <50 27 <10 <10 <10 .8 <10 <10 <10 <10 <10 <148 <8 .04 <10 <3 <3 .75 Butyl benzyl phthalate NA NA NA NA <50 <10 <10 <10 <10 .8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 Chrysene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3 .75 Dibenz( a,h )anthracene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 Diethyl phthalate NA NA NA NA 170 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 Dimethyl phthalate NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 Di-n-butyl phthalate NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 Di-n-octyl phthalate NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <IO <3 <3.75 Fluoranthene NA NA NA NA <50 <10 <10 <10 <10 .8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3 .75 Fluorene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3 .75 Hexachlorobenzene NA NA NA NA <50 <10 <10 <10 <10 .8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 Hexachlorobutadiene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <30 <30 <37 .5 Hexachloro -NA NA NA NA cyclopentadiene <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 Hexachloroethane NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <30 <30 <37.5 Indeno(l ,2 ,3-cd)pyrene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3.75 lsophorone NA NA NA NA <50 <10 <10 <10 <10 .8 <10 <10 <10 <10 <10 <148 <8.04 <10 <35 <43.8 Naphthalene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3 .75 Nitro benzene NA NA NA NA <50 <10 <10 <10 <10 .8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37 .5 N-Nitrosodimethylamine NA NA NA NA <50 <10 <10 <10 <10 .8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 N-Nitrosodi-n-NA propylamine NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 N-N itrosodipheny I amine NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 Pentachlorophenol NA NA NA NA <250 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <50 <30 <37.5 Phenanthrene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <3 <3 .75 Phenol NA NA NA NA <50 <10 <10 <IO <10.8 <10 <10 <10 <10 <10 <148 <8.04 <10 <30 <37.5 Pyrene NA NA NA NA <50 <10 <10 <10 <10.8 <10 <10 <10 <10 <IO <148 <8.04 <10 <3 <3.75 Pyridine NA NA NA NA <50 <10 <10 <10 <10 .8 <10 <10 <10 <10 <10 <148 <8 .04 <20 <30 146 1 Historic values reported for Gross Alpha from 1987 and 2003 are total gross alpha reported in pCi/L. All other gross alpha data are reported as Gross Alpha minus Rn & U. Constituent Carbonate Bicarbonate Calcium Chloride Fluoride Magnesium Nitrogen-Ammonia Nitrogen-Nitrate Potassium Sodium Sulfate pH (s.u.) TDS Conductivity (umhos/cm) Arsenic Beryllium Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc Gross Alpha Cell 1 Continued 2022 2023 Major Ions <3 <5 <6 <5 290 341 24100 13100 4400 1.8 6930 4440 3580 4060 9 94.9 1470 1470 28000 17700 103000 58900 1.2 1.3 193000 112000 98800 76100 Metals (ug/L) 296000 110000 845 788 7470 4030 11000 6490 26800 20600 1110000 640000 2130000 1710000 26600 11800 454000 248000 13.8 7 104000 87900 19800 22900 6190 2700 885 380 618 1880 <1000 50 182000 118000 1310000 665000 353000 221000 Radiologies (pCI/L) 33500 10100 Constituent Acetone Benzene Carbon tetrachloride Chloroform Chloromethane MEK Methylene Chloride Naphthalene Tetrahydrofuran Toluene Xylenes 1,2,4-Trichlorobenzene 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1-Methylnaphthalene 2,4,5-Trichlorophenol 2,4,6-Trichlorophenol 2 ,4-Dichlorophenol 2,4-Dimethylphenol 2,4-Dinitropheno 1 2,4-Dinitrotoluene 2 ,6-Dinitrotoluene 2-Chloronaphthalene 2-Chlorophenol 2-Methylnaphthalene 2-Methylphenol 2-Nitrophenol 3&4-Methylphenol 3 ,3-Dichlorobenzidine 4,6-Dinitro-2- methylphenol 4-Bromophenylphenyl ether 4-Chloro-3-methylphenol 4-Chlorophenyl phenyl ether 4-Nitrophenol Acenaphthene Acenaphthylene Anthracene Azobenzene Cell I Continued 2022 2023 VOCs(ug/L) <2 5 <2 5 <5 <5 <5 <5 11.4 <5 <5 <5 <25 <25 <25 <25 <5 <5 <25 <25 <5 <5 <15 <15 SVOCs (ug/L) <30 <30 <30 <30 <30 <30 <30 <30 <3 <3 <30 <30 <30 <30 <30 <30 <30 <30 <50 <50 <30 <30 <30 <30 <4.10 <4.10 <30 <30 <3 <3 <30 <30 <30 <30 <37 <37 <33 <33 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <3 <3 <3 <3 <3 <3 <30 <30 Constituent Benz( a )anthracene Benzidine Benzo(a)pyrene Benzo(b )fluoranthene Benzo(g,h, i)pery Jene Benzo(k)fluoranthene B is(2-chloroethoxy) methane B is(2-chloroethy I) ether Bis(2-chloroisopropyl) ether Bis(2-ethylhexyl) phthalate Butyl benzyl phthalate Chrysene Dibenz( a,h )anthracene Diethyl phthalate Dimethyl phthalate Di-n-butyl phthalate Di-n-octyl phthalate Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachloro - cyclopentadiene Hexachloroethane Indeno(l ,2,3-cd)pyrene Isophorone Naphthalene Nitro benzene N-Nitrosodimethylamine N-Nitrosodi-n- propylamine N-Nitrosodiphenylamine Pentachlorophenol Phenanthrene Phenol Pyrene Pyridine 1 Historic values reported fc Cell I Continued 2022 2023 <3 <3 <39 <39 <3 <3 <3 <3 <3 <3 <3 <3 <30 <30 <30 <30 <30 <30 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <30 <30 <30 <30 <30 <30 <30 <30 <3 <3 <35 <35 <3 <3 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <3 <3 <30 <30 <3 <3 <30 <30 Cell 2 LDS Chemical and Radiological Characteristics Constituent 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Major Ions (mg/L) Carbonate <I <I Bicarbonate 168 324 Calcium 711 615 Chloride 1750 1360 Fluoride 0.4 0.4 Magnesium 596 454 Nitrogen-Ammonia 32.6 0.7 Not Not Not Not Not Not Not Not Not Not Not Not Not Nitrogen-Nitrate 2.8 2.2 Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Potassium 22 13 Sodium 412 318 Sulfate 2700 1780 pH (s.u.) 6.6 7.36 TDS 6750 5310 Conductivity (umhos/cm) 11000 6500 Metals ( ug/L) Arsenic <5 <5 Beryllium <0.50 <0.50 Cadmium 33.4 1.1 Chromium <25 <25 Cobalt 314 <IO Copper 59 12 Iron 208 37 Lead <1.0 <1.0 Manganese 1810 395 Not Not Not Not Not Not Not Not Not Not Not <0.50 0.52 Not Not Mercury Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Molybdenum 21 13 Nickel 948 <20 Selenium 7.9 9.4 Silver <IO <IO Thallium 0.92 <0.50 Tin <100 <100 Uranium 83.8 79.6 Vanadium 22 <15 Zinc 4220 78 Cell 2 LDS Chemical and Radiological Characteristics Constituent 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Radiologies (pCi/L) 7.3 Not Not Not Not Not Not Not Not Not Not Not Not Not Gross Alpha 13.5 Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled voes (ug/L) Acetone <20 <20 Benzene <l <l Carbon tetrachloride <1 <1 Chloroform <1 <l Chloromethane <1 <1 Not Not Not Not Not Not Not Not Not Not Not Not Not MEK <20 <20 Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Methylene Chloride <1 <l Naphthalene <1 <1 Tetrahydrofuran <100 6.13 Toluene <1 <l Xylenes <l <1 SVOCS (ug/L) 1,2,4-Trichlorobenzene NA <10 1,2-Dichlorobenzene NA <10 1,3-Dichlorobenzene NA <10 1,4-Dichlorobenzene NA <10 1-Methylnaphthalene NA <10 2,4,5-Trichlorophenol NA <10 2,4,6-Trichlorophenol NA <10 2,4-Dichlorophenol NA <10 2,4-Dimethylphenol NA <10 2,4-Dinitrophenol NA <20 Not Not Not Not Not Not Not Not Not Not Not Not Not 2,4-Dinitrotoluene NA <10 Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled 2, 6-Dinitroto 1 uene NA <10 2-Chloronaphthalene NA <10 2-Chlorophenol NA <10 2-Methylnaphthalene NA <10 2-Methylphenol NA <10 2-Nitrophenol NA <10 3&4-Methylphenol NA <10 3,3 '-Dichlorobenzidine NA <10 4,6-Dinitro-2-methylphenol NA <10 4-Bromophenyl phenyl ether NA <10 Cell 2 LDS Chemical and Radiological Characteristics Constituent 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 4-Chloro-3-methylphenol NA <10 4-Chlorophenyl phenyl ether NA <10 4-Nitrophenol NA <10 Acenaphthene NA <10 Acenaphthylene NA <10 Anthracene NA <10 Azobeniene NA <10 Benz( a )anthracene NA <10 Benzi dine NA <10 Benzo( a)pyrene NA <10 Benzo(b )fluoranthene NA <10 Benzo(g,h,i)perylene NA <10 Benzo(k)fluoranthene NA <10 Bis(2-chloroethoxy)methane NA <10 Bis(2-chloroethyl) ether NA <10 Bis(2-chloroisopropyl) ether NA <10 Bis(2-ethylhexyl) phthalate NA <10 Butyl benzyl phthalate NA <10 Chrysene NA <10 Dibenz( a,h )anthracene NA <10 Diethyl phthalate NA <10 Not Not Not Not Not Not Not Not Not Not Not Not Not Dimethyl phthalate NA <10 Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Sampled Di-n-butyl phthalate NA <10 Di-n-octyl phthalate NA <10 Fluoranthene NA <10 Fluorene NA <10 Hexachlorobenzene NA <10 Hexachlorobutadiene NA <10 Hexachlorocyclopentadiene NA <10 Hexachloroethane NA <10 Indeno(l ,2,3-cd)pyrene NA <10 Isophorone NA <10 Naphthalene NA <10 Nitro benzene NA <10 N-Nitrosodimethylamine NA <10 N-Nitrosodi-n-propylamine NA <10 N-Nitrosodiphenylamine NA <10 Pentachlorophenol NA <10 Phenanthrene NA <10 Phenol NA <10 Pyrene NA <10 Pyridine NA <10 Cell 2 Slimes Drain Chemical and Radiological Characteristics Constituents 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Major Ions (mg/L) Carbonate ND ND <I <I <I <I <I <I <I <I <I <I <5 <5 <5 <3 <5 Bicarbonate ND ND <I <I <I <I <I <I <I <I <I <I <5 <5 <5 <6 <5 Calcium 572 528 508 496 474 462 465 322 524 402 477 538 480 513 463 496 625 Chloride 3700 3860 2750 3510 3110 3730 3270 3720 3850 4040 3820 4310 3870 4080 4200 4060 3770 Fluoride 3.3 ND <0.1 2.4 2.1 1.32 161 130 204 48.4 110 116 105 130 130 160 0.1 Magnesium 4100 4030 3750 3790 3640 3760 3320 2780 3810 3570 3630 4470 3700 3800 3950 3880 3920 Nitrogen-Ammonia 4020 3620 3240 3820 2940 3540 1880 3500 367 3800 500 5620 4420 7150 2950 3310 4440 Nitrogen-Nitrate 30.9 20.3 38 126 38 27 47.2 35 1.06 12.7 13.7 12.1 33.0 21.6 48 38 41.5 Potassium 636 560 689 620 636 611 622 489 659 512 668 774 710 735 661 623 799 Sodium 4050 4600 4410 4770 4590 4380 3980 3130 4800 4690 4810 5290 4600 4620 4520 4480 5780 Sulfate 60600 74000 72200 63700 64200 58300 83700 62200 57800 83900 58300 63300 67000 67000 68500 59900 52200 pH (s.u.) 3.18 3.24 3.11 3.39 3.18 3 3.02 3.1 3.1 2.99 3.08 2.89 3.07 3.06 3.0 3.0 2.6 TDS 84300 74600 84100 79900 80200 83800 92200 87000 88200 93100 85900 99900 94300 89500 95700 85400 87000 Conductivity (umhos/cm) NA NA 88700 60200 51400 52900 51100 54100 58800 44500 52600 58200 55700 53900 53200 46300 48400 Metals (ug/L) Arsenic 26900 19300 14200 23500 17800 19400 21000 19800 13300 16900 21100 19600 23000 18000 19300 23800 22200 Beryllium 298 245 271 267 231 251 262 197 275 259 261 241 280 284 217 262 395 Cadmium 5500 5840 5510 6370 5580 5290 5780 6480 6260 6610 6790 6380 6500 5220 5890 6410 7560 Chromium 2750 2450 2230 2510 2380 2350 2290 1630 1840 1630 2290 2100 2100 1860 1810 2120 2590 Cobalt 46500 43800 38700 48200 42500 48700 44900 46700 46000 46100 50600 46900 54000 40800 42700 50000 51600 Copper 106000 154000 170000 148000 132000 138000 137000 126000 143000 156000 148000 136000 160000 93900 139000 104000 104000 Iron 2770000 3310000 3230000 2720000 2960000 2850000 2810000 2180000 3000000 3410000 3430000 3030000 3600000 2420000 2840000 2830000 2930000 Lead 566 528 403 586 501 619 515 638 268 484 593 589 590 400 562 528 400 Manganese 117000 130000 160000 144000 123000 141000 122000 98000 136000 149000 151000 137000 170000 133000 138000 130000 137000 Mercury ND ND <0.5 <4 11.1 1.9 <0.5 <0.0020 <0.5 <2.00 <2.00 <2.00 <0.2 0.058 <0.2 <0.1 <I Molybdenum 4080 3190 2240 4630 3510 3610 3650 4250 2010 3360 4060 3340 3200 2170 3090 2920 4540 Nickel 123000 122000 108000 126000 111000 125000 108000 127000 120000 134000 133000 121000 140000 104000 119000 142000 139000 Selenium 422 647 726 844 714 711 678 1020 631 615 683 635 1300 585 657 645 300 Silver ND ND <10 <10 <10 <10 <10 <100 <20 <100 <100 <100 <50 6 5 <4 <50 Thallium 361 703 368 470 371 338 278 402 233 212 373 374 390 2190 1580 320 1820 Tin ND ND <100 <100 <100 <100 <100 <17000 <100 <17000 <17000 <17000 <50 <50 <50 <500 <20 Uranium 23000 29200 29900 30600 27100 33400 22800 26400 27200 27300 28600 25200 29000 18600 24300 24100 24800 Vanadium 409000 463000 536000 469000 454000 475000 452000 497000 513000 497000 534000 516000 500000 345000 450000 438000 438000 Zinc 767000 750000 582000 652000 574000 639000 631000 405000 702000 764000 760000 728000 850000 816000 674000 751000 828000 Radiologies (pCi/L) Gross Alpha 1290 1570 1580 1000 1230 1370 2270 6890 7210 5660 4570 7520 3790 1630 1920 1970 1760 (2400)* voes (ug/L) Acetone 550 410 570 460 690 600 384 <700 599 473 551 551 449 501 522 409 395 Benzene ND ND <I <I <1 <1 <l <5.0 <1 <I <1 <1 <1 <5 <5 <5 <5 Carbon tetrachloride ND ND <1 <1 <1 <I <1 <5.0 <l <1 <1 <1 <1 <5 <5 <5 <5 Chloroform 20 17 16 15 20 16 21.4 <70.0 18.6 15 17.1 17.1 16 13.7 15.9 14.0 14.3 Chloromethane 1.8 ND 2.2 2.3 2 3 2.04 <30.0 <1 <1 1.46 1.46 2.2 <5 <5 <5 <5 Cell 2 Slimes Drain Chemical and Radiological Characteristics Constituents 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 MEK 65 ND 100 83 130 100 95.5 <4000 102 80.3 58.4 58.4 135 74.0 89.9 74.3 70.2 Methylene Chloride ND ND <I <I <I <l <l <5.0 <I <l 1.02 1.02 0.49 J <25 <25 <25 <25 Naphthalene 14 7.5 16 17 13 12 16.8 <100 16.2 11.9 I 0.1 10.1 13 7.65 7.15 6.05 5.50 Tetrahydrofuran 15 NA <100 <10 <10 3.2 3 .98 <46.0 2.16 <I 2.88 2.88 <10 <25 <25 <2 5 <25 Toluene 1.7 ND 2.6 2.6 3 2 3 .23 <1000 3 .74 2.94 3.20 3.20 2.4 <5 <5 <5 <5 Xylenes 1.5 ND <I 2.2 <I 2 5.97 <10000 <I <l <I <I 0.51 J <15 <15 <5 <15 SVOCS (ug/L) 1,2,4-Trichlorobenzene NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 1,2-Dichlorobenzene NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 1,3-Dichlorobenzene NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 1,4-Dichlorobenzene NA NA <11 <10 <IO <10 <IO <IO <10 <10 <JO <9.03 <10 <30 <30 <30 <30 1-Methylnaphthalene NA NA <11 <IO <10 <10 <10 11 <10 <10 <10 <9.03 12 <3.0 11.6 12.4 <3 2,4,5-Trichlorophenol NA NA <11 <10 <IO <IO <10 <IO <10 <10 <IO <9.03 <IO <30 <30 <30 <30 2,4 ,6-Trichlorophenol NA NA <I I <10 <IO <IO <IO <IO <IO <10 <IO <9.03 <10 <30 <30 <30 <30 2,4-Dichlorophenol NA NA <l l <10 <10 <10 <IO <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 2,4-Dimethylphenol NA NA <51 <20 <20 <10 <10 <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 2,4-Dinitrophenol NA NA <l l <10 <10 <20 <20 <20 <20 <10 <10 <9.03 <50 <50 <50 <50 <50 2, 4-Dinitroto 1 uene NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 2, 6-Dinitroto I uene NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <IO <30 <30 <30 <30 2-Chloronaphthalene NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <4.1 <4.10 <4.10 <4.10 2-Chlorophenol NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 2-Methylnaphthalene NA NA <11 <10 <10 <10 <10 11 <10 11. l <10 <9.03 11 <3 10.4 12.1 <3 2-Methylphenol NA NA <11 <10 <10 <10 <10 <10 <JO <10 <10 <9.03 <10 <30 <30 <30 <30 2-Nitrophenol NA NA <11 <10 <IO <10 <IO <10 <10 <10 <10 <9.03 <IO <30 <30 <30 <30 3&4-Methylphenol NA NA <21 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <37 <37 <37 <37 3,3 '-Dichlorobenzidine NA NA <51 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <46 <33 <33 <33 <33 4,6-Dinitro-2-methylphenol NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <50 <30 <30 <30 <30 4-Bromophenyl phenyl ether NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 4-Chloro-3-methylphenol NA NA <11 <10 <10 <10 <10 <10 <10 <10 <JO <9.03 <10 <30 <30 <30 <30 4-Chlorophenyl phenyl ether NA NA <51 <10 <10 <IO <10 <IO <10 <10 <10 <9.03 <IO <30 <30 <30 <30 4-Nitrophenol NA NA <11 <10 <IO <10 <10 <IO <IO <IO <10 <9.03 <50 <30 <30 <30 <30 Acenaphthene NA NA <11 <IO <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <3 <3 <3 <3 Acenaphthylene NA NA <11 <10 <10 <10 <JO <10 <10 <10 <10 <9.03 <10 <3 <3 <3 <3 Anthracene NA NA <11 <10 <10 <10 <IO <10 <10 <10 <10 <9.03 <10 <3 <3 <3 <3 Azobenzene NA NA <11 <10 <10 <10 <IO <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 Benz(a)anthracene NA NA <21 <10 <10 <10 <IO <10 <10 <10 <10 <9.03 <10 <3 <3 <3 <3 Benzi dine NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <92 <39 <39 <39 <39 Benzo( a )pyrene NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <3 <3 <3 <3 Benzo(b )fluoranthene NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <3 <3 <3 <3 Benzo(g,h,i)perylene NA NA <11 <10 <10 <10 <10 <IO <10 <10 <10 <9.03 <10 <3 <3 <3 <3 Benzo(k)fluoranthene NA NA <I I <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <3 <3 <3 <3 Bis(2-chloroethoxy)methane NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <3 <30 <30 <30 Bis(2-chloroethyl) ether NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 Cell 2 Slimes Drain Chemical and Radiological Characteristics Constituents 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Bis(2-chloroisopropyl) ether NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <10 <30 <30 <30 <30 Bis(2-ethylhexyl) phthalate NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 1.1 <3 <3 <3 <3 Butyl benzyl phthalate NA NA <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.03 <IO <3 <3 <3 <3 Chrysene NA NA <11 <10 <10 <IO <10 <10 <IO <10 <10 <9.03 <10 <3 <3 <3 <3 Dibenz(a,h)anthracene NA NA <11 <10 <10 <10 <10 <10 <IO <IO <10 <9.03 <10 <3 <3 <3 <3 Diethyl phthalate NA NA <11 <10 <IO <10 <10 <10 <10 <10 <10 <9.03 <IO <3 <3 <3 <3 Dimethyl phthalate NA NA <11 <10 <10 <10 <IO <10 <IO <IO <10 <9.03 1.5 <3 <3 <3 <3 Di-n-butyl phthalate NA NA <11 <10 <IO <10 <10 <10 <10 <10 <10 <9.03 <10 <3 <3 <3 <3 Di-n-octyl phthalate NA NA <11 <IO <IO <IO <10 <IO <IO <IO <IO <9.03 <IO <3 <3 <3 <3 Fluoranthene NA NA <11 <10 <IO <IO <10 <IO <10 <IO <10 <9.03 <IO <3 <3 <3 <3 Fluorene NA NA <11 <10 <10 <10 <10 <10 <IO <IO <IO <9.03 <10 <3 <3 <3 <3 Hexachlorobenzene NA NA <11 <10 <IO <IO <IO <10 <IO <10 <10 <9.03 <IO <30 <30 <30 <30 Hexachlorobutadiene NA NA <I I <IO <IO <10 <10 <10 <10 <IO <IO <9.03 <28 <30 <30 <30 <30 Hexachlorocyclopentadiene NA NA <11 <IO <10 <10 <IO <IO <IO <10 <IO <9.03 <IO <30 <30 <30 <30 Hexachloroethane NA NA <11 <IO <IO <10 <10 <IO <IO <IO <IO <9.03 <28 <30 <30 <30 <30 lndeno(l ,2 ,3-cd)pyrene NA NA <11 <IO <10 <10 <IO <IO <10 <IO <10 <9.03 <IO <3 <3 <3 <3 lsophorone NA NA <11 <IO <IO <IO <IO <10 <10 <10 <10 <9.03 <IO <35 <35 <35 <35 Naphthalene NA NA <11 <10 <IO <IO <10 <10 <10 <IO <10 <9.03 5.3 <3 <3 <3 <3 Nitro benzene NA NA <11 <10 <IO <IO <10 <10 <10 <10 <10 <9.03 <IO <30 <30 <30 <30 N-Nitrosodimethylamine NA NA <11 <10 <10 <10 <10 <10 <IO <IO <IO <9.03 <10 <30 <30 <30 <30 N-Nitrosodi -n -propylamine NA NA <11 <IO <10 <IO <10 <10 <10 <10 <10 <9.03 <IO <30 <30 <30 <30 N-Nitrosodiphenylamine NA NA <51 <IO <IO <IO <IO <10 <IO <IO <IO <9.03 <10 <30 <30 <30 <30 Pentachlorophenol NA NA <11 <10 <10 <10 <10 <10 <10 <IO <IO <9.03 <50 <30 <30 <30 <30 Phenanthrene NA NA <11 <10 <10 <10 <10 <IO <10 <IO <10 <9.03 <10 <3 <3 <3 <3 Phenol NA NA <11 10.7 <10 <10 <IO <10 <10 <10 <IO <9.03 <10 <30 <30 <30 <30 Pyrene NA NA <11 <IO <IO <IO <10 <10 <10 <IO <10 <9.03 <IO <3 <3 <3 <3 Pyridine NA NA <11 <IO <10 <10 <IO <10 <10 <10 <IO <9.03 <18 <30 <30 <30 <30 * Sample was reanalyzed due to comparability with the duplicate sample. The reanalysis data are in (parenthesis). Cell 3 Chemical and Radiological Characteristics 2013 2018 Constituent 1987 2003 (Avg) 2007 (Avg) 2008 2009 2010 2011 2012 2013 ReSample 2014 2015 2016 2017 2018 ReSample 2019 2020 2021 2022 2023 Major Ions (mg/L) Carbonate NA <l ND ND <1 <1 <1 <l <1 NS <1 <1 <1.00 <1.00 <1.00 NS <5 236 Bicarbonate <5 NA ND ND <1 <1 <1 <1 <1 NS <1 <1 <1.00 <1.00 <1.00 NS <5 175 Calcium 300 418 887 478 628 560 200 591 586 NS 294 713 148 526 498 NS 510 3 Chloride NA 2460 15965 15400 17200 3470 40400 8880 38400 NS 7200 22800 115000 2720 55200 NS 15000 500 Fluoride <100 667 42.8 1.4 0.6 54.8 64.1 2300 12400 NS 1330 5410 46500 189 7400 NS 1340 2.2 Magnesium 5400 3386 15767 13100 17100 2500 22100 5680 15400 NS 1910 12700 31000 84400 22000 NS 10000 11 Nitrogen-Ammonia 13900 1302 13867 9010 21600 2650 6470 6840 100 NS 3030 8.91 6270 88.5 9490 NS 9000 Not 278 Not Not Nitrogen-Nitrate <100 20 102 44 142 26 261 64 277 NS 59.5 26.6 582 107 710 NS 925 Sampled-12.2 Sampled-Sampled- Potassium NA 254 6657 4760 3820 782 2590 1190 2110 NS 386 1620 3120 133 1480 NS 630 Dry 20 Dry Dry Sodium 5900 3198 25583 22900 28600 5620 47900 6660 34400 NS 3630 23800 59800 2120 46900 NS 14000 1210 Sulfate 180000 33400 173667 167000 214000 40400 197000 80000 440000 NS 37000 158000 834000 9970 208000 NS 96000 1630 pH (s.u.) 0.82 2.28 1.6 1.79 1.4 2.18 1.27 2.4 1.05 NS 2.2 1.72 <1.00 3.63 1.32 NS 3.88 10 TDS 189000 51633 228500 193000 243000 56200 296000 120000 410000 NS 70100 238000 887000 17300 327000 NS 143000 3930 Conductivity (umhos/cm) NA NA NA NA 304000 59800 86400 80300 84300 NS 56200 121000 13600 20300 104000 NS 95500 5870 Metals (ug/L) Arsenic 163000 32867 256500 489000 ND 52900 263000 4340 66000 NS 2920 21500 194000 870 20900 NS 380 170 Beryllium 540 430 913 840 905 206 1570 678 2570 NS 222 1520 12500 590 2950 NS 350 <l Cadmium 2600 1958 9260 15400 ND 1960 12200 3460 24000 NS 2550 14800 41000 1190 52100 NS 7400 2 Chromium 12000 3742 14883 12800 ND 3360 22800 10900 30600 NS 2380 15300 76200 <100 25100 NS 230J <5 Cobalt 48000 NA 82783 57000 ND 13000 76000 76100 99700 NS 20800 72500 74200 4440 120000 NS 64000 <100 Copper 360000 87333 505000 345000 ND 89000 768000 379000 954000 NS 139000 511000 3000000 9720 515000 NS 35000 454 Iron 2100000 1278333 4874500 4400000 5970000 1460000 10200000 3400000 9700000 NS 688000 4570000 15400000 262000 13300000 NS 2500000 519 Lead <20000 2507 9647 16900 ND 17200 16700 1860 14400 NS 1900 9090 4030 15.8 20500 NS <75 2 Manganese 82000 144000 496833 313000 ND 101000 587000 3110000 2470000 NS 214000 1270000 5690000 102000 4070000 NS 1000000 Not 47 Not Not Mercury ND NA ND 16 ND <4 30.9 9.6 21.6 NS 2.4 7.01 873 <2.00 430 NS 0.20 Sampled-<1 Sampled-Sampled- Molybdenum 52000 12250 122167 209000 14 21300 96200 790 56100 NS 2930 12500 133000 70.1 3740 NS 550 Dry 759 Dry Dry Nickel 170000 20917 131833 241000 ND 23800 75800 150000 122000 NS 44900 121000 29200 7220 113000 NS 150000 33 Selenium <2000 910 5856 10200 ND 3080 6900 2460 7060 NS 1370 4330 3170 306 3680 NS 2900 135 Silver <2500 NA 305 1010 ND 101 792 1850 3380 NS 329 1790 6780 <100 3770 NS 110 <1 Thallium 4700 NA 446 1200 ND 190 518 1080 694 NS 290 602 2160 21.3 3760 NS 170 1.6 Tin NA NA 1090 1070 ND 155 325 <100 <100 NS <17000 <100 <17000 <17000 <17000 NS <50 <50 Uranium 118000 67833 332333 636000 3690 180000 458000 835000 1200000 NS 134000 530000 5360000 9630 1110000 NS 19000 533 Vanadium 210000 158333 935000 1130000 ND 692000 2370000 836000 3220000 NS 454000 1720000 10300000 5600 2420000 NS 54000 6740 Zinc 590000 NA 748833 515000 ND 134000 726000 652000 1430000 NS 155000 899000 7810000 68100 2100000 NS 950000 114 Radiologies (pCi/L) 94900 (8/4/2015) Not Not Not Gross Alpha NA 1015831 16533 21700 17000 4030 11100 1530 81900 NS 19700 8780 86000 292 19700 NS 3890 Sampled-<18.5 Sampled-Sampled- (5/28/2015) Dry Dry Dry Cell 3 Chemical and Radiologica l Characteristics 2013 2018 Constituent 1987 2003 (Avg) 2007 (Avg) 2008 2009 2010 2011 2012 2013 ReSample 2014 2015 2016 2017 2018 ReSample 2019 2020 2021 2022 2023 VOCS(ug/L) Acetone 28 NA 80 100 67 37 330 64 302 159 <700 82.8 <200 48.4 135 NS 135 46.6 Benzene <5 NA ND ND <l <l <l <l <5 <l <5.0 <l <l <l <l NS <l <5 Carbon tetrachloride <5 NA ND ND <l <l <l <l <5 <l <5.0 <l <l <l <l NS <l <5 Chloroform 6 NA ND 11 4.2 2.6 31 2 56.3 21 <70.0 1.75 13.2 <l 5.02 NS 18 <5 Chloromethane NA NA ND ND 1.4 1.8 3.5 1 <5 2.58 <30.0 1.03 19.8 <l 5.36 NS 2.8 Not <5 Not Not MEK NA NA ND ND <l <l 67 <20 <100 24.5 <4000 <20 <20 <20 <20 NS 34 Sampled -<25 Sampled -Sampled - Methylene Chloride 10 NA ND ND <l <l 7.4 <l 6.95 <l <5.0 <l <l <l 10.4 NS 0.67 J Dry <25 Dry Dry Naphthalene <10000 NA ND <10 <l 2.1 1.2 <l <5 <l <100 <l <l <l <l NS 0.57 J <5 Tetrahydrofuran NA NA 150 <20 <100 <10 <10 <l <5 <l <46.0 <l <l <l 3.01 NS <35.0 <25 Toluene <5 NA ND ND <l <l <l <l <5 <l <1000 <l <l <l <l NS <l <5 Xylenes <5 NA ND ND <l <l <l <l <5 <l <10000 <l <l <l <l NS <l <15 SVOCS (ug/L) 1,2,4-Trichlorobenzene NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1 ,490 <7.78 <10 <30 1,2-Dichlorobenzene NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 1,3-Dichlorobenzene NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 1,4-Dichlorobenzene NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 1-Methylnaphthalene NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1 ,490 <7.78 <10 <3 2,4,5-Trichlorophenol NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1 ,490 <7.78 <10 <30 2,4,6-Trichlorophenol NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 2,4-Dichlorophenol NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 2,4-Dimethylphenol NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 2,4-Dinitrophenol NA NA NA NA <53 <20 <20 <20 <21.1 <20 <20 <20 <10 <10 <1 ,490 <7.78 <50 <50 2,4-Dinitrotoluene NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1 ,490 <7.78 <10 <30 2,6-Dinitrotoluene NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 Not <30 Not Not 2-Chloronaphthalene NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 Sampled-<4.10 Sampled-Sampled- 2-Chlorophenol NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 Dry <30 Dry Dry 2-Methylnaphthalene NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1 ,490 <7.78 <10 <3 2-Methylphenol NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1 ,490 <7.78 <10 <30 2-Nitrophenol NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 3&4-Methylphenol NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <37 3 ,3 '-Dichlorobenzidine NA NA NA NA <21 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <45 <33 4,6-Dinitro-2-methylphenol NA NA NA NA <53 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <50 <30 4-Bromophenyl phenyl ether NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 4-Chloro-3-methylphenol NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 4-Chlorophenyl phenyl ether NA NA NA NA <11 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <10 <30 4-Nitrophenol NA NA NA NA <53 <10 <10 <10 <10.5 <10 <10 <10 <10 <10 <1,490 <7.78 <50 <30 Acenaphthene NA NA NA NA <11 <10 <IO <10 <10.5 <10 <10 <10 <10 <IO <1,490 <7.78 <10 <3 Cell 3 Chemkal and Radio loj!;ical Characteristics 2013 2018 Constituent 1987 2003 (Avg) 2007 (Avg) 2008 2009 2010 2011 2012 2013 ReSample 2014 2015 2016 2017 2018 ReSample 2019 2020 2021 2022 2023 Acenaphthylene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Anthracene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Azobenzene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <30 Benz( a )anthracene NA NA NA NA <11 <IO <IO <10 <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Benzi dine NA NA NA NA <21 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <39 Benzo( a )pyrene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Benzo(b )fluoranthene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Benzo(g,h,i )perylene NA NA NA NA <11 <10 <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Benzo(k)fluoranthene NA NA NA NA <11 <10 <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Bis(2-chloroethoxy)methane NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1 ,490 <7.78 <IO <30 Bis(2-chloroethyl) ether NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <30 Bis(2-chloroisopropyl) ether NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <30 Bis(2-ethylhexyl) phthalate NA NA NA NA <11 10.6 <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Butyl benzyl phthalate NA NA NA NA <11 <IO <IO <IO <10.5 <IO <10 <IO <IO <IO <l,490 <7.78 <IO <3 Chrysene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <10 <IO <IO <IO <1 ,490 <7.78 <IO <3 Dibenz(a,h)anthracene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Diethyl phthalate NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Dimethyl phthalate NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <10 <IO <1,490 <7.78 <IO <3 Di-n-butyl phthalate <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO Not <3 Not Not NA NA NA NA Sampled-Sampled-Sampled- Di-n-octyl phthalate NA NA NA NA <11 <10 <IO <IO <10.5 <IO <IO <IO <IO <IO <1 ,490 <7.78 <IO <3 Fluoranthene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO Dry <3 Dry Dry Fluorene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Hexachlorobenzene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <30 Hexachlorobutadiene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <27 <30 Hexachlorocyclopentadiene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1 ,490 <7.78 <IO <30 Hexachloroethane NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <27 <30 Indeno( 1,2,3-cd)pyrene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Isophorone NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <10 <1,490 <7.78 <IO <35 Naphthalene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Nitro benzene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1 ,490 <7.78 <IO <30 N-Nitrosodimethylamine NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <30 N-Nitrosodi-n-propylamine NA NA NA NA <11 <10 <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <30 N-Nitrosodiphenylamine NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <30 Pentachlorophenol NA NA NA NA <53 <IO <IO <10 <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <50 <30 Phenanthrene NA NA NA NA <11 <10 <IO <IO <10.5 <IO <IO <IO <IO <IO <l,490 <7.78 <IO <3 Phenol NA NA NA NA <11 <IO <IO <IO <10.5 <10 <IO <IO <IO <IO <1 ,490 <7.78 <IO <30 Pyrene NA NA NA NA <11 <IO <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <IO <3 Pyridine NA NA NA NA <11 <10 <IO <IO <10.5 <IO <IO <IO <IO <IO <1,490 <7.78 <18 <30 1 Historic values reported for Gross Alpha from 1987 and 2003 are total gross alpha reported in pCi/L. All other gross alpha data are reported as Gross Alpha minus Rn & U. Cell 4A Chemical and Radiological Characteristics Constituent 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Major Ions (mg/L) Carbonate <l <1 <1 <1 <1 <l <l <1 <1 <1 <5 <5 <5 <3 <5 Bicarbonate <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <5 <5 <5 <6 <5 Calcium 627 598 558 591 668 445 604 632 607 707 510 641 637 723 714 Chloride 4650 7350 5870 4980 4530 5900 6410 7040 8060 10100 8670 9120 12700 13500 10300 Fluoride 0.3 21.6 30.6 43 1130 1290 1660 2030 1420 2000 1650 1700 3190 2800 3.0 Magnesium 3250 4940 4720 2230 3660 2990 3910 3550 4360 7030 4100 4700 5020 5930 3140 Nitrogen-Ammonia 3140 5230 4930 1540 1340 2730 11 4770 924 9060 6700 10000 7250 7600 5850 Nitrogen-Nitrate 28 52 44 27 38.2 39.5 19.9 41.9 53.4 73.4 70.4 84.8 112 108 94.4 Potassium 980 1440 1450 558 773 724 1020 915 1500 2020 1200 1660 1730 2910 1940 Sodium 5980 11300 11400 7130 6860 7190 9760 9580 12000 17600 15000 17700 18800 21900 19100 Sulfate 67600 87100 267000 64900 83300 64900 77200 126000 77800 116000 81300 85700 110000 115000 64100 pH (s.u.) 1.4 1.99 1.73 1.2 1.47 1.7 1.51 1.59 1.53 1.25 2.40 2.36 2.2 2.2 2.3 TDS 81400 107000 108000 76000 90000 97000 104000 124000 120000 147000 122000 139000 162000 174000 113000 Conductivity (umhos/cm) 131000 101000 82100 78100 66300 73000 89600 81300 89800 115000 81400 84000 91300 86600 70600 Metals (ug/L) Arsenic 626000 109000 86600 60500 73700 70000 82600 94400 104000 125000 63000 71300 68600 79700 4010 Beryllium 296 215 323 167 247 190 281 320 440 538 420 485 448 504 314 Cadmium 1920 3670 2190 844 1450 1780 2090 2850 3360 3850 2500 3490 3540 4370 3100 Chromium 3220 7500 5900 5990 5220 4620 5460 7920 8520 9350 7200 9050 8820 11600 3840 Cobalt 9440 26500 22500 22900 22900 27500 26100 32800 37900 41000 28000 32800 30600 39500 22900 Copper 99200 168000 181000 433000 540000 556000 477000 566000 578000 683000 580000 617000 557000 735000 417000 Iron 2360000 2920000 3390000 3190000 2620000 2280000 3090000 3850000 4480000 5320000 3200000 3690000 3810000 4270000 686000 Lead 5360 11800 11000 5270 11500 14800 11700 14000 15100 16400 9000 8680 8380 9760 1400 Manganese 178000 209000 131000 112000 143000 120000 181000 225000 261000 307000 210000 211000 214000 266000 148000 Mercury 1.19 <4 15.2 2.4 0.786 2.5 0.99 <2 2.30 2.52 2.1 3.4 3.7 3.4 1 Molybdenum 24300 43800 24200 58200 25500 40600 35400 43900 40800 59100 19000 25700 32600 43600 9590 Nickel 17100 40900 43500 41300 43300 54100 48700 61300 66800 71900 50000 58800 57100 78600 45800 Selenium 4620 5810 4460 1310 2080 2000 2400 2820 4450 5870 3700 3660 3740 4320 1700 Silver 78 193 216 127 144 197 186 305 379 521 310 487 466 565 160 Thallium 162 350 410 250 256 376 436 568 169 727 90 524 185 216 390 Tin 257 378 319 169 118 <17000 142 <17000 <17000 <17000 77 181 105 <500 <20 Uranium 118000 217000 153000 91000 112000 159000 171000 214000 193000 244000 35000 42600 43300 53400 68200 Vanadium 918000 1090000 730000 237000 461000 535000 577000 715000 972000 1080000 150000 205000 237000 323000 98700 Zinc 142000 224000 286000 200000 183000 169000 237000 318000 344000 406000 280000 350000 307000 400000 247000 Cell 4A Chemical and Radiological Characteristics Constituent 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Radiologies (pCi/L) 176000 Gross Alpha 8910 3400 8290 16300 15800 240000 (8/4/2015) 292000 133000 516000 261000 52400 122000 197000 9160 37800 (5/28/2015) voes (ug/L) Acetone 60 55 100 25 28.4 <700 42.5 45. l 21.4 42.7 39 J 16.2 <25 <25 <25 Benzene <1 <l <l <1 <1 <5.0 <l <l <1 <1 <2.5 <l <5 <5 <5 Carbon tetrachloride <l <l <l <1 <1 <5.0 <1 <l <1 <l <2.5 <l <5 <5 <5 Chloroform 4 8.5 10 <l <l <70.0 <1 <l <1 1.91 1.9 J 1.50 <5 <5 <5 Chloromethane 3.4 5.5 7.9 <1 <l <30.0 <l <l 1.35 1.76 1.7 J 1.90 <5 <5 <5 MEK <l <l <l <I <20 <4000 <20 <20 <20 <20 13J <5 <25 <25 <25 Methylene Chloride <I <I <I <20 <I <5.0 <I <l <I <l <2.5 <5 <25 <25 <25 Naphthalene 1.8 <l <I <l <1 <100 <I <l <1 <1 <2.5 <l <5 <5 <5 Tetrabydrofuran <100 <10 <10 1.36 <l <46.0 <I 12.6 <l <l <35.0 <5 <25 <25 <25 Toluene <l <l <l <l <l <1000 <l <l <I <l <2.5 <l <5 <5 <5 Xylenes <l <l <l <l <l <10000 <l <l <l <l <2.5 <3 <5 <15 <15 SVOCS (ug/L) 1,2, 4-Trichlorobenzene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 1,2-Dichlorobenzene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 1,3-Dichlorobenzene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 1,4-Dichlorobenzene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 1-Methy I naphthalene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <3.0 <3 <3 <3 2,4 ,5-Trich lorophenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 2,4,6-Trichlorophenol <11 <10 <10 <IO <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 2,4-Dichlorophenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 2 ,4-Dimethylphenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 2,4-Dinitrophenol <53 <20 <20 <20 <20 <20 <20 <10 <10 <8.57 <SO <50 <50 <50 <SO 2,4-Dinitrotoluene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 2,6-Dinitrotoluene <11 <10 <IO <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 2-Chloronaphthalene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <4.1 <4.10 <4.10 <4.10 2-Ch lorophenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 2-Methy !naphthalene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <3 <3 <3 <3 2-Methylphenol <11 <10 <10 <IO <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 2-Nitrophenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 3&4-Methylphenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <37 <37 <37 <37 3 ,3 '-Dichlorobenzidine <21 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <46 <33 <33 <33 <33 4,6-Dinitro-2-methy lphenol <53 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <50 <30 <30 <30 <30 4-Bromophenyl phenyl ether <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <IO <30 <30 <30 <30 4-Chloro-3-methylphenol <11 <10 <10 <10 <10 <IO <10 <10 <10 <8.57 <10 <30 <30 <30 <30 4-Chlorophenyl phenyl ether <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 Cell 4A Chemical and Radiological Characteristics Constituent 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 4-Nitrophenol <53 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <50 <30 <30 <30 <30 Acenaphthene <11 <IO <10 <IO <10 <10 <10 <10 <IO <8.57 <IO <3 <3 <3 <3 Acenaphthylene <11 <10 <IO <10 <10 <IO <IO <IO <10 <8.57 <IO <3 <3 <3 <3 Anthracene <11 <IO <10 <10 <10 <10 <10 <10 <IO <8.57 1.2 <3 <3 <3 <3 Azobenzene <11 <10 <10 <10 <10 <IO <10 <10 <IO <8.57 <10 <30 <30 <30 <30 Benz( a )anthracene <11 <10 <10 <10 <10 <IO <10 <10 <10 <8.57 <10 <3 <3 <3 <3 Benzi dine <21 <IO <10 <10 <10 <IO <IO <10 <IO <8.57 <10 <39 <39 <39 <39 Benzo(a)pyrene <11 <10 <IO <IO <10 <10 <10 <IO <10 <8.57 <10 <3 <3 <3 <3 Benzo(b )fluoranthene <11 <10 <10 <10 <10 <10 <IO <10 <IO <8.57 <10 <3 <3 <3 <3 Benzo(g,h,i)perylene <11 <10 <10 <10 <10 <10 <10 <10 <IO <8.57 <10 <3 <3 <3 <3 Benzo(k)fluoranthene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <3 <3 <3 <3 Bis(2-chloroethoxy)methane <11 <10 <10 <10 <10 <10 <IO <10 <10 <8.57 <10 <3 <30 <30 <30 Bis(2-chloroethyl) ether <11 <10 <10 <IO <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 Bis(2-chloroisopropyl) ether <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 Bis(2-ethylhexyl) phthalate <11 19.6 <10 <10 <10 <10 <10 <10 <IO <8.57 <10 <3 <3 <3 <3 Butyl benzyl phthalate <I I <10 <IO <10 <10 <IO <10 <IO <IO <8.57 <IO <3 <3 <3 <3 Chrysene <11 <10 <IO <IO <10 <IO <10 <IO <10 <8.57 <10 <3 <3 <3 <3 Dibenz(a,h )anthracene <11 <10 <10 <10 <10 <10 <10 <IO <IO <8.57 <10 <3 <3 <3 <3 Diethyl phthalate <I 1 <10 <10 <IO <10 <10 <10 <10 <IO <8.57 <10 <3 <3 <3 <3 Dimethyl phthalate <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <3 <3 <3 <3 Di-n-butyl phthalate <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <3 <3 <3 <3 Di-n-octyl phthalate <11 <10 <10 <IO <10 <10 <10 <10 <IO <8.57 <10 <3 <3 <3 <3 Fluoranthene <11 <10 <10 <10 <10 <IO <10 <IO <IO <8.57 <IO <3 <3 <3 <3 Fluorene <11 <10 <10 <10 <10 <IO <IO <10 <10 <8.57 <IO <3 <3 <3 <3 Hexachlorobenzene <11 <IO <IO <10 <10 <IO <10 <IO <10 <8.57 <IO <30 <30 <30 <30 Hexachlorobutadiene <11 <10 <IO <10 <10 <IO <IO <IO <10 <8.57 <28 <30 <30 <30 <30 Hexachlorocyclopentadiene <11 <10 <10 <10 <10 <IO <10 <10 <10 <8 .57 <IO <30 <30 <30 <30 Hexachloroethane <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <28 <30 <30 <30 <30 Indeno( 1,2,3-cd)pyrene <11 <IO <10 <IO <10 <10 <IO <IO <10 <8.57 <10 <3 <3 <3 <3 lsophorone <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <IO <35 <35 <35 <35 Naphthalene <11 <10 <10 <10 <10 <10 <10 <10 <10 <8.57 <10 <3 <3 <3 <3 Nitro benzene <11 <10 <10 <10 <10 <IO <10 <IO <IO <8.57 <10 <30 <30 <30 <30 N-Nitrosod imethylam i ne <11 <IO <IO <IO <10 <IO <IO <IO <10 <8.57 <IO <30 <30 <30 <30 N-N itrosodi-n-propy )amine <11 <10 <10 <10 <10 <10 <10 <IO <10 <8.57 <10 <30 <30 <30 <30 N-Nitrosodiphenylamine <11 <10 <10 <IO <10 <10 <10 <10 <IO <8.57 <10 <30 <30 <30 <30 Pentach lorophenol <53 <IO <10 <IO <10 <10 <10 <10 <10 <8.57 <50 <30 <30 <30 <30 Phenanthrene <11 <10 <10 <10 <10 <IO <IO <10 <10 <8.57 <10 <3 <3 <3 <3 Phenol <11 <10 <10 <IO <10 <10 <10 <10 <10 <8.57 <10 <30 <30 <30 <30 Pyrene <11 <10 <10 <IO <10 <10 <10 <10 <10 <8.57 <10 <3 <3 <3 <3 Pyridine <11 <10 <10 <10 <10 <10 <10 <10 <10 34.0 <19 <30 <30 <30 <30 Cell4ALDS Chemical and Radiological Characteristics Constituent 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Major Ions (mg/L) Carbonate <1 <l <1 <1 <l <1 <1 <1 <1 <1 <5 <5 <5 <3 <5 Bicarbonate <1 <1 <l <l <l <1 <l <l <l <1 <5 <5 <5 <6 <5 Calcium 558 474 470 453 429 336 510 446 542 516 520 496 500 468 538 Chloride 7570 4670 6040 2710 1910 4200 2860 5200 8610 4360 7360 3860 6510 6270 2570 Fluoride 0.7 39.4 46 27 1970 1320 282 1150 1370 716 1530 500 2240 1990 2.3 Magnesium 6390 3240 5100 2070 1710 2690 2730 3940 4630 3820 3800 3690 3780 4310 1120 Nitrogen-Ammonia 4480 2290 3480 1320 1010 2920 13.4 5050 846 4580 6080 3050 3680 3500 1470 Nitrogen-Nitrate 69 183 94 15 28.9 39 27.4 40.9 63. l 44 .0 58.2 60.2 161 96 0.5 Potassium 1960 934 1500 503 305 415 245 675 1710 539 1000 334 635 678 452 Sodium 12600 6700 11000 3500 2930 4190 3490 8050 11500 6780 13000 5260 9550 8630 4730 Sulfate 92400 41700 77400 39600 31400 56000 50500 91300 89100 68600 72600 59900 72900 66300 18900 pH (s.u .) 1.98 2.53 2.32 2.l 2.32 2.4 2.29 2.04 l.50 1.88 2.39 2.25 2.4 2.5 2.2 TDS 117000 56900 93800 55400 49700 81900 65200 95400 142000 75300 112000 83800 105000 91400 32500 Conductivity (umhos/cm) 150000 49000 66600 39600 31300 53600 50200 62200 97900 63400 75600 53200 65900 55400 28400 Metals (ug/L) Arsenic 133000 54000 74700 44100 35700 51200 10400 43500 117000 42400 52000 16600 32300 24500 5070 Beryllium 536 295 367 180 188 185 199 289 479 298 370 317 323 252 120 Cadmium 4010 2650 3160 921 1170 4720 4270 4500 4080 3740 1900 4410 4220 3150 1180 Chromium 9140 3890 5940 3930 2630 2780 1760 4250 9410 3930 6500 2820 5200 5720 1230 Cobalt 37300 15200 21700 22300 44300 41200 33700 32100 42700 30600 25000 45800 73400 26900 8990 Copper 222000 116000 150000 481000 754000 439000 160000 331000 650000 376000 500000 273000 322000 289000 108000 Iron 3940000 1420000 2530000 2460000 1370000 1850000 1320000 2330000 5140000 2090000 2500000 1440000 1370000 11.00000 409000 Lead 5270 3400 4520 2300 165 991 46.8 797 15500 118 4200 254 1120 1390 300 Manganese 389000 157000 207000 95200 86300 98600 96700 184000 296000 136000 190000 137000 '195000 191000 51 JOO Mercury 2.66 6.2 14.7 0.7 <0.5 <0.0020 <0.5 <2.00 <2 .00 <2.00 l.4 0.20 0.30 <0.1 <1 Molybdenum 49200 23900 29300 10200 1200 3970 278 10700 49900 2350 8400 2190 4090 2940 1260 Nickel 43900 23900 29600 35000 54600 99300 86300 72700 74700 70900 46000 110000 67700 51200 19000 Selenium 5250 2820 3780 1260 1020 2170 649 1590 4940 1550 3100 1230 1960 2000 600 Silver 204 62 127 44 24.8 <100 25.6 144 312 <100 230 150 212 192 <50 Thallium 252 194 290 332 171 522 218 439 550 281 55 425 245 325 250 Tin 504 180 119 <100 <100 <17000 <100 <17000 <17000 <17000 <70 <500 <50 <500 <20 Uranium 284000 145000 168000 90200 75000 82200 25000 116000 247000 78600 38000 48000 76000 116000 22000 Vanadium 1150000 518000 770000 240000 157000 510000 253000 449000 1090000 475000 130000 374000 458000 472000 73100 Zinc 298000 152000 204000 181000 163000 306000 510000 502000 385000 446000 210000 541000 380000 256000 103000 Cell 4ALDS Chemical and RadiologicaJ Characteristics Constituent I 2009 I 2010 I 2011 l 2012 l 2013 I 2014 I 2015 I 2016 I 2017 I 2018 I 2019 l 2020 l 2021 I 2022 I 2023 Radiologies (pCi/L) 17200 Gross Alpha 7020 3230 7440 4730 6930 61800 (8/4/2015) 98700 176000 51000 163000 5450 23700 34200 2840 1670 (5 /28 /2015) voes (ug/L) Acetone 240 130 120 55 57 <700 84.7 61.5 79.8 108 84 90.3 262 161 <25 Benzene <l <l <I <I <I <5.0 <I <I <I <I <I <5 <5 <5 <5 Carbon tetrachloride <I <l <I <I <l <5.0 <1 <l <l <I <1 <5 <5 <5 <5 Chloroform 23 52 26 42 110 95 129 84 .5 21.6 33.8 31 120 47.2 70.5 113 Chloromethane 7.9 13 3.8 6 9 .93 <30.0 5.35 <1.00 3.00 2.41 3.6 6 .90 <5 5.15 <5 MEK 78 50 82 36 <20 <4000 <20 <2 0 <20 <20 43 29.5 92.2 50 <25 Methylene Chloride <l <I <l <I <1 <5.0 <I <l <I 1.05 0.47 J <25 <25 <25 <25 Naphthalene <1 1.5 <l 1 2.35 <100 <l <l <1 <I <l <5 <5 <5 <5 Tetrahydroforan 140 158 102 117 39.1 <46.0 18.5 <l 15.7 19.7 16 <25 <25 61.6 <25 Toluene <1 <1 <I <I <I <1000 <I <1 <l <1 <I <5 <5 <5 <5 Xylenes <I <l <l <1 <l <10000 <I <l <I <I <I <15 <15 <15 <15 SVOCS (ug/L) 1,2,4-Trichlorobenzene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 1,2 -Dichlorobenzene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 1,3-Dichlorobenzene <11 <10 <10 <10 <10 <10 <IO <10 <10 <9.08 <10 <30 <30 <30 <30 1, 4-Dichlorobenzene <11 <10 <10 <10 <10 <10 <IO <10 <10 <9.08 <10 <30 <30 <30 <30 1-Methy lnaphthalene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3.0 <3 <3 <3 2,4 ,5-Trich lorophenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 2,4,6-Trichlorophenol <11 <IO <10 <10 <10 <10 <10 <10 <IO <9.08 <IO <30 <30 <30 <30 2,4-Dichlorophenol <11 <10 <10 <10 <IO <10 <10 <IO <IO <9.08 <10 <30 <30 <30 <30 2,4-Dirnethylphenol <11 <10 <10 <IO <IO <IO <IO <IO <10 11.1 <10 <30 <30 <30 <30 2,4-Dinitrophenol <54 <20 <20 <20 <20 <20 <20 <IO <IO <9.08 <50 <50 <50 <50 <50 2,4-Dinitrotoluene <11 <IO <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 2 ,6-Dinitrotoluene <11 <IO <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 2-Chloronaphthalene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <4.10 <4.10 <4.10 <4.10 2-Chlorophenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 2-Methylnaphthalene <11 <IO <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 2-Methylphenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 2-Nitrophenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 3&4-Methylphenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <37 <37 <37 <37 3 ,3 '-Dichlorobenzidine <22 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <46 <33 <33 <33 <33 4,6-Dinitro-2-methylphenol <54 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <50 <30 <30 <30 <30 4-Bromophenyl phenyl ether <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 4-Chloro-3-methyl phenol <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 4-Cblo rophenyl phenyl ether <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 Cell 4A LDS Chemical and Radiological Characteristics Constituent 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 4-Nitrophenol <54 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <50 <30 <30 <30 <30 Acenaphthene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Acenaphthylene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Anthracene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Azobenzene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 Benz(a)anthracene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Benzi dine <22 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <39 <39 <39 <39 Benzo(a)pyrene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Benzo(b )fluoranthene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Benzo(g,h, i)pery lene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Benzo(k)fluoranthene <11 <10 <10 <10 <10 <10 <10 <10 <IO <9.08 <10 <3 <3 <3 <3 B is(2-ch loroethoxy )methane <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <30 <30 <30 Bis(2-chloroethyl) ether <11 <10 <10 <10 <10 <10 <IO <10 <10 <9.08 <IO <30 <30 <30 <30 Bis(2-chloroisopropyl) ether <11 <IO <10 <10 <10 <10 <10 <10 <10 <9.08 <IO <30 <30 <30 <30 Bis(2-ethylhexyl) phthalate <11 54.9 54.9 16.6 <10 <10 <10 <10 <IO <9.08 1.1 <3 <3 <3 <3 Butyl benzyl phthalate <11 <10 <IO <10 <10 <10 <10 <IO <10 <9.08 <10 <3 <3 <3 <3 Chrysene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Dibenz(a,h)anthracene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Diethyl phthalate <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Dimethyl phthalate <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Di-n-butyl phthalate <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Di-n -octy l phthalate <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Fluoranthene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <IO <3 <3 <3 <3 Fluorene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Hexachlorobenzene <11 <10 <10 <10 <10 <10 <10 <IO <10 <9.08 <10 <30 <30 <30 <30 Hexachlorobutadiene <11 <10 <IO <IO <10 <10 <10 <10 <10 <9.08 <28 <30 <30 <30 <30 Hexachlorocyclopentadiene <11 <10 <10 <IO <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 Hexachloroethane <11 <IO <IO <10 <IO <10 <10 <IO <10 <9.08 <28 <30 <30 <30 <30 Lndeno(l ,2,3-cd)pyrene <11 <IO <10 <10 <IO <10 <IO <10 <10 <9.08 <10 <3 <3 <3 <3 [sophorone <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <35 <35 <35 <35 Naphthalene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Nitro benzene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 N-Nitrosodimethylamine <11 <IO <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 N-Nitrosodi-n-propylamine <11 <10 <IO <IO <10 <10 <10 <IO <10 <9.08 <10 <30 <30 <30 <30 N-Nitrosodiphenylamine <11 <10 <10 <10 <10 <10 <10 <IO <10 <9.08 <10 <30 <30 <30 <30 Pentac h loropheno l <54 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <50 <30 <30 <30 <30 Phenanthrene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Phenol 33 23.5 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <30 <30 <30 <30 Pyrene <11 <10 <10 <10 <10 <10 <10 <10 <10 <9.08 <10 <3 <3 <3 <3 Pyridine <11 <10 <10 <10 <10 <10 <10 <10 <10 12.9 <19 <30 <30 <30 <30 Cell 4B Chemical and Radiological Characteristics Constituen t 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Major Ions (mg/L) Carbonate <l <l <l <1 <l <l <l <l <5 <5 <5 <3 <5 Bica rbonate <l <1 <l <l <l <1 <l <l <5 <5 <5 <6 <5 Calcium 570 580 662 366 655 523 473 664 670 628 534 328 188 Chloride 8290 8170 4570 7300 8500 12000 6930 7860 10500 10200 44800 1110 329 Fluoride 26.7 23.3 1050 1150 1210 1780 1170 1410 2300 1730 7000 230 1.7 Ma1m es ium 3910 4500 3560 3310 5530 5780 3550 5790 6500 4520 8200 267 23 Ni trogen-Amm onfa 5220 5580 2060 5380 1.09 8690 724 7590 8150 6580 9100 4350 3450 Ni trogen-Nitrate 39 42 51.4 47 15.2 64 .5 31.3 42.2 38 .6 70 .0 286 2 0.7 Potass ium 1370 1650 1110 989 1700 1710 1230 1660 1900 1680 3540 196 43 Sodium 9050 11700 3150 7100 12800 14100 10600 15700 18000 17100 54000 1520 336 Sulfate 134000 119000 98100 91500 108000 285000 708000 98400 124000 97200 259000 16700 2830 pH (s .u.) 1.87 1.5 1.65 1.6 1.35 1.26 1.41 1.24 1.53 2.24 1.2 2.6 2 TDS 98000 128000 108000 131000 149000 172000 103000 117000 180000 150000 423000 21500 4470 Conductivity (umhos/cm ) 76900 86900 72800 90100 115000 116000 93800 107000 99600 87300 109000 18100 6370 Metals (ug/L) Arsenic 67400 80000 65400 70400 106000 139000 82700 97800 140000 67900 307000 3500 20 B eryllium 311 356 334 275 430 557 347 407 640 455 1280 46 4 Cadmium 1990 2540 1990 2290 2980 4260 2340 2520 2000 1800 6760 165 69 C hromium 6860 8280 6390 6940 7450 11900 7800 8630 12000 9350 16600 2320 280 Cobalt 17800 29300 21300 24600 33700 46700 30300 32900 44000 30900 39700 1180 140 Cooo er 193000 340000 340000 368000 499000 684000 457000 539000 830000 602000 1170000 40600 4450 Iron 2960000 3580000 2830000 2480000 4340000 6340000 3690000 4400000 5800000 3690000 7610000 263000 73400 Lead 9960 11600 9820 10900 13400 17900 12200 12500 16000 8150 26000 383 <100 Man ganese 128000 148000 154000 129000 231000 325000 207000 242000 320000 201000 602000 18500 2290 Mercurv 13.7 2.6 1.49 <0.0020 1.72 <2.00 <2.00 <2.00 0.46 0.40 8.6 <0.1 <1 Mo lybdenum 21400 27600 26100 29000 39800 55400 22600 27400 29000 8110 95600 1600 380 Nickel 33900 50500 35100 42000 56400 79600 53000 57800 78000 56400 48900 1520 1000 Selenium 4670 4470 3900 5010 5600 7300 3740 4510 6600 3540 9080 272 <100 Silver 137 169 137 142 195 307 <100 160 170 76 741 17 <50 Thallium 237 368 243 258 408 559 17 .5 33.7 <100 165 2160 150 110 Tin 196 215 163 <17000 211 <17000 <17000 <17000 340 138 879 <200 <20 Uranium 133000 171000 110000 133000 200000 278000 23100 28100 36000 47400 279000 4270 200 Vanadium 660000 783000 163000 666000 881000 868000 746000 828000 710000 113000 1060000 28300 2890 Zinc 191000 270000 184000 144000 313000 476000 267000 323000 280000 334000 475000 12800 2830 Radiologies (pCi/L) 267000 Gross Alpha 8590 13600 14600 148000 (8 /4/2015) 42500 262000 132000 320000 310000 54500 87400 6210 2030 (5 /28 /2015) voes (ug/L) Acetone 130 94 43 .5 <700 56.2 86.4 38 .6 56 .8 39 12.7 97 .6 39 <25 Benzene <l <l <l <5.0 <1 <l <l <l <l <l <5 <5 <5 Carbon tetrach loride <l <l <l <5.0 <l <l <l <l <l <l <5 <5 <5 C hl orofonn 9.4 4 8.06 <70.0 2.34 3.07 2.39 2.17 3.4 <1 <5 <5 <5 C hl orom ethane 8.5 8 7.12 <30.0 3.62 6.01 1.26 1.72 2.1 1.28 <5 <5 <5 MEK <l <1 <20 <4000 <20 <20 <20 27.4 15 J <5 57 <25 <25 Cell 4B Chemical and Radiological Characteristics Constituent 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Methvlene Chloride <1 <1 <1 <5.0 <1 <1 <1 <1 <1 <5 <25 <25 <25 Naphthalene <1 <1 <1 <100 <I <1 <1 <1 <1 <1 <5 <5 <5 Tetrahydrofuran <10 11.1 <1 <46.0 <1 <1 <1 1.87 <35.0 <5 164 <25 <25 Toluene <1 <1 <1 <1000 <1 <1 <1 <1 <I <1 <5 <5 <5 Xvlenes <1 <1 <1 <10000 <1 <1 <1 <1 <1 <3 <15 <15 <15 SVOCS (ug/L) 1,2,4-Trichlorobenzene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 1,2-Dichlorobenzene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 1,3-Dichlorobenzene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 1,4-Dichlorobenzene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 1-Methylnaphthalene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <3.0 <3 <3 <3 2,4,5-Trichlorophenol <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 2,4,6-Trichlorophenol <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 2,4-Dichlorophenol <10 <10 <10 <10 <10 <10 <10 <8.72 <50 <30 <30 <30 <30 2 ,4-Dimethylphenol <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 2,4-Dio itrophenol <20 <20 <20 <20 <20 <10 <10 <8.72 <10 <50 <50 <50 <50 2 ,4-Dinitrotoluene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 2,6-Dinitrotoluene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 2-Chloronaphthalene <IO <10 <10 <10 <10 <10 <10 <8.72 <10 <4.1 <4.10 <4.1 <4.1 2-Chloropheool <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 2-Methylnaphthalene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <3 <3 <3 <3 2-Methylphenol <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 2-Nitrophenol <10 <10 <10 <10 <IO <10 <10 <8.72 <10 <30 <30 <30 <30 3&4-Methylphenol <10 <10 <10 <10 <10 <10 <10 <8.72 <IO <37 <37 <37 <37 3,3 '-Dichlorobenzidine <10 <10 <10 <10 <10 <IO <10 <8.72 <44 <33 <33 <33 <33 4,6-Dinitro-2-methylphenol <10 <IO <10 <10 <10 <IO <IO <8.72 <50 <30 <30 <30 <30 4-Bromophenyl phenyl ether <10 <10 <10 <10 <10 <IO <10 <8.72 <10 <30 <30 <30 <30 4-Chloro-3-methylphenol <10 <10 <IO <IO <IO <IO <IO <8.72 <10 <30 <30 <30 <30 4-Chlorophenyl phenyl ether <10 <IO <IO <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 4-Nitrophenol <10 <10 <IO <IO <IO <10 <10 <8.72 <50 <30 <30 <30 <30 Acenaphthene <IO <10 <10 <IO <IO <10 <10 <8.72 <10 <3 <3 <3 <3 Acenaphthylene <IO <10 <10 <10 <IO <10 <10 <8.72 <10 <3 <3 <3 <3 Anthracene <10 <10 <10 <10 <10 <10 <10 <8.72 1.7 <3 <3 <3 <3 Azobenzene <10 <IO <10 <IO <10 <10 <10 <8.72 <10 <30 <30 <30 <30 Benz( a)anthracene <IO <10 <10 <10 <IO <10 <10 <8.72 <10 <3 <30 <3 <3 Benzidine <10 <10 <10 26 <10 <10 <10 <8.72 <10 <39 <39 <39 <39 Benzo( a)pyrene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <3 <30 <3 <3 Benzo(b )fluoranthene <10 <10 <10 <IO <10 <10 <10 <8.72 <10 <3 <30 <3 <3 Benzo(g,h,i)perylene <10 <10 <10 <10 <IO <10 <10 <8.72 <IO <3 <30 <3 <3 Benzo(k}fluoranthene <10 <10 <10 <10 <10 <IO <IO <8.72 <10 <3 <30 <3 <3 B is(2-chloroethoxy)methane <IO <IO <10 <10 <10 <IO <10 <8.72 <10 <3 <30 <30 <30 Bis(2-chloroethyl) ether <10 <IO <IO <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 Cell 4B Chemical and Radiological Characteristics Constituent 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 B is(2-ch loro isopropyl) ether <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <30 Bis(2-ethylhexyl) phthalate 410 19 <10 <10 <10 <IO <10 <8.72 <10 <3 <3 <3 <3 Butyl benzyI phthalate <10 <10 <10 <10 <10 <IO <IO <8.72 <10 <3 <3 <3 <3 Chrysene <IO <IO <10 <10 <IO <IO <10 <8 .72 <10 <3 <3 <3 <3 Dibenz(a,h)anthracene <10 <IO <10 <10 <10 <IO <10 <8.72 <10 <3 <3 <3 <3 Diethyl phrhalate <10 <10 <10 <10 <10 <10 <IO <8.72 <10 <3 <3 <3 <3 Dim ethyl phthalate <10 <IO <10 <IO <IO <IO <10 <8 .72 <10 <3 <3 <3 <3 Di -n-buty l ph tha 'late <10 <10 <10 <10 <10 <10 <IO <8.72 <10 <3 <3 <3 <3 Di-n-octyI phtha la te <10 <10 <10 <10 <10 <10 <10 <8 .72 <10 <3 <3 <3 <3 Fiuoranthene <10 <10 <10 <10 <10 <10 <IO <8 .72 <10 <3 <3 <3 <3 Fluorene <10 <10 <10 <IO <10 <10 <10 <8.72 <10 <3 <3 <3 <3 Hexach lorobenzene <10 <10 <10 <IO <10 <IO <10 <8.72 <10 <30 <30 <30 <30 Hexachlorobutadiene <10 <10 <10 <10 <10 <IO <10 <8.72 <26 <30 <30 <30 <3 0 Hexachlorocyclopentadiene <10 <10 <10 <10 <10 <10 <10 <8 .72 <10 <30 <30 <30 <3 0 Hexachioroethane <10 <10 <10 <10 <10 <10 <10 <8 .72 <26 <30 <30 <30 <3 0 lndeoo( 1,2 ,3 -cd)pyrene <10 <10 <1 0 <10 <10 <10 <10 <8 .72 <10 <3 <3 <3 <3 [sopborone <10 <10 <10 <10 <10 <10 <10 <8 .72 <10 <35 <35 <35 <35 Naphthalene <IO <10 <10 <1 0 <10 <10 <10 <8.72 <10 <3 <3 <3 <3 Nitrobenzene <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <3 0 <30 <30 <30 N-Nitrosodimethylamine <10 <10 <10 <1 0 <10 <10 <10 <8.72 <10 <30 <30 <30 <3 0 N-Nitrosodi-n-propylamine <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <30 <30 <30 <3 0 N-Ni trosocliphenylamine <10 <10 <10 <10 <10 <10 <10 <8.72 <1 0 <3 0 <30 <30 <3 0 Pe ntachlorophenol <IO <10 <10 <10 <10 <10 <10 <8.72 <5 0 <3 0 <3 0 <30 <30 Phenanthrene <10 <10 <10 <10 <1 0 <IO <1 0 <8.72 <10 <3 <3 <3 <3 Phenol <10 <10 <10 <10 <10 <10 <10 <8.72 <10 <3 0 <3 0 <3 0 <30 Pyrene <10 <10 <10 <10 <W <10 <10 <8.72 <10 <3 <3 <3 <3 Pyridine <10 <10 <10 15 <10 <10 <10 31.7 <18 <3 0 118 <30 <3 0 Cell 4B LDS Chemical and Radiological Characteristics Constituent 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Major Ions (mg/L) Carbonate <1 <l dry <1 <l <1 <l <1 <5 <5 <5 <3 <5 Bicarbonate <1 <1 dry <1 <1 <1 <1 <1 <5 <5 <5 <6 <5 Calcium 486 456 dry 308 538 547 516 592 550 555 526 388 606 Chloride 3630 6850 dry 6900 7960 8510 10400 8060 8050 7630 9180 4740 6110 Fluoride 28.4 22 dry 970 1150 1290 1050 1480 1680 1550 1870 1270 1.0 Magnesium 3230 3360 dry 3400 5190 4780 5370 5580 4800 4830 4850 3090 3270 Nitrogen-Ammonia 4260 4090 dry 5240 2.43 7540 739 7510 7080 5080 4280 3300 3940 Nitrogen-Nitrate 30 31 dry 43 16.6 49.6 63 .9 47.4 41.2 39.5 67.5 28 89.3 Potassium 1130 1060 dry 952 1560 1360 2130 1620 1400 1350 1240 623 854 Sodium 8240 8080 dry 6920 11900 10800 13200 14500 13000 12600 12200 7660 11400 Sulfate 59900 99100 dry 82300 104000 163000 117000 100000 89500 88700 99000 54900 52200 pH (s.u.) 2.23 2.4 dry 2.2 1.51 1.88 1.44 1.35 1.73 1.89 2.0 2.2 1.7 TDS 85800 90200 dry 129000 131000 133000 168000 132000 131000 134000 132000 82000 90500 Conductivity (umhos/cm) 63000 62400 dry 76300 106000 68400 105000 104000 80800 77600 78000 52100 57900 Metals (ug/L) Arsenic 54200 41200 dry 67800 98400 98800 135000 94100 89000 84900 74800 37600 35400 Beryllium 274 271 dry 282 411 430 559 416 470 483 318 242 506 Cadmium 1670 1740 dry 2290 2790 3250 4500 2610 2000 2060 2140 1320 1850 Chromium 6250 5930 dry 6160 7320 9470 13700 8980 9100 9620 8980 5560 7320 Cobalt 15600 19000 dry 23300 31100 33600 48900 31700 31000 32200 60300 19000 19400 Copper 176000 181000 dry 308000 458000 475000 681000 497000 550000 500000 423000 305000 314000 Iron 2450000 2120000 dry 2590000 4180000 4680000 5910000 4190000 4400000 4180000 3660000 1720000 1620000 Lead 6060 4420 dry 4120 10100 5860 14000 8770 7800 5110 1860 1160 1200 Manganese 118000 162000 dry 144000 222000 262000 346000 239000 240000 221000 213000 148000 179000 Mercury 12.3 3 dry 0.002 1.47 <2.00 <2.00 <2.00 0.1 lJ 0.10 <0.2 <0.1 <l Molybdenum 16700 15000 dry 24300 36300 35500 52900 25900 27000 19800 14300 6360 8480 Nickel 30700 33700 dry 40100 52600 58100 84400 56100 59000 57900 52000 37600 36300 Selenium 3710 2880 dry 4080 5080 5310 6860 4500 4700 3950 3870 2010 1900 Silver 111 117 dry 119 179 224 266 156 170 173 142 59 <50 Thallium 179 175 dry 336 354 414 427 245 87 98 123 66 1210 Tin 332 <100 dry <17000 198 <17000 <17000 <17000 200 258 141 <500 <20 Uranium 111000 132000 dry 143000 185000 192000 269000 54200 31000 34600 29400 21200 26100 Vanadium 518000 428000 dry 671000 817000 847000 1260000 811000 760000 743000 683000 452000 453000 Zinc 172000 182000 dry 144000 296000 315000 443000 303000 280000 286000 244000 164000 189000 Radiologies (pCi/L) 375000 Gross Alpha 6000 7500 dry 181000 (8/4/2015) 185000 165000 305000 226000 54100 105000 97600 14900 52500 (5/28/2015) Cell 4B LDS Chemical and Radiological Characteristics Constituent I 2011 I 2012 I 2013 I 2014 I 2015 I 2016 I 2017 I 2018 I 2019 I 2020 l 2021 I 2022 I 2023 voes (ug/L) Acetone 390 370 drv <700 218 266 479 147 102 68.5 <25 192 259 Benzene <l <l dry <5.0 <l <l <l <l <l <l <5 <5 <5 Carbon tetrachloride <l <l dry <5.0 <1 <l <l <1 <l <l <5 <5 <5 Chloroform 20 19 dry <70.0 5.03 9.97 9.13 4.74 3.9 1.22 <5 7.10 35.4 Ch loromethane 11 11 dry <30.0 9.72 10.8 7.16 2.4 2.3 <l <5 <5 7 MEK 240 180 dry <4000 71.8 53.6 89.4 34.6 71 42.8 <25 68.5 88.7 Methylene Chloride <1 <l dry <5.0 <l <1 1.01 <1 <l <5 <25 <25 <25 Naphthalene <1 <l dry <100 <l <l <l <l <1 <l <5 <5 <5 Tetrahydrofuran 198 322 dry 75.6 36.6 75.9 51.2 17.3 53 96.5 <25 227 55.5 Toluene <l <l dry <1000 <l <l <1 <l <1 <1 <5 <5 <5 Xylenes <l <l dry <10000 <l <l <l <1 <l <3 <15 <15 <15 SVOCS (ug/L) 1,2,4-Trichlorobenzene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 1,2-Dichlorobenzene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 1,3-Dich lorobenzene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 1,4-Dichlorobenzene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 1-Methylnaphthalene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 .0 <3 <3 <3 2 ,4 ,5-Trich lorophenol <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 2,4,6-Trichlorophenol <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 2 , 4-Dich loropheno I <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 2 ,4-Dimethylphenol <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 2,4-Dinitrophenol <20 <20 dry <20 <20 <20 <10 <8.79 <50 <50 <50 <50 <50 2,4-Dinitrotoluene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 2 ,6-Dinitrotoluene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 2-Ch loronaphthalene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <4.1 <4.10 <4.10 <4.10 2-Ch lorophenol <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 2-Methylnaphthalene <10 <10 dry <10 <10 <10 <10 <8 .79 <10 <3 <3 <3 <3 2-Methylphenol <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 2-Nitrophenol <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 3&4-Methylphenol <10 <10 dry <10 <10 <10 <10 <8.79 0.42 <37 <37 <37 <37 3,3 '-Dichlorobenzidine <10 <10 dry <10 <10 <10 <10 <8.79 <45 <33 <33 <33 <33 4,6-Dinitro-2-methylphenol <10 <10 dry <10 <10 <10 <10 <8.79 <50 <30 <30 <30 <30 4-Bromophenyl phenyl ether <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 4-Chloro-3-methylphenol <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 4-Chlorophenyl phenyl ether <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 4-Nitrophenol. <10 <10 dry <10 <10 <10 <10 <8.79 <50 <30 <30 <30 <30 Acenaphthene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Acenaphthylene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Anthracene <10 <10 dry <10 <10 <10 <10 <8 .79 <10 <3 <3 <3 <3 Azobenzene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 Cell 4B LDS Chemical and Radiological Characteristics Constituent 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Benz(a)anthracene <10 <10 drv <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Benzi dine <10 <10 dry <10 <10 <10 <10 <8.79 <10 <39 <39 <39 <39 Benzo( a )pyrene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Benzo(b )fluoranthene <10 <10 dry <10 <10 <IO <10 <8.79 <10 <3 <3 <3 <3 Benzo(g,h, i)pery Jene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Benzo(k)fluoranthene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Bis(2-chloroethoxy)methane <10 <10 dry <10 <10 <IO <10 <8.79 <10 <3 <30 <30 <30 Bis(2-chloroethyl) ether <10 <10 dry <10 <10 <10 <IO <8.79 <10 <30 <30 <30 <30 Bis(2-chloroisopropyl) ether <10 <10 dry <10 <10 <IO <IO <8.79 <IO <30 <30 <30 <30 Bis(2-ethylhexyl) phthalate 191 191 dry 27 <10 132 145 65.9 16 <3 43.1 13.9 <3 Butyl benzyl phthalate <10 <10 dry <10 <IO <10 <10 <8.79 <IO <3 <3 <3 <3 Chrysene <10 <IO dry <10 <IO <IO <IO <8.79 <IO <3 <3 <3 <3 Dibenz(a,h)antl1racene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Diethyl phthalate <10 <IO dry <10 <IO <IO <IO <8.79 <IO <3 <3 <3 <3 Dimethyl phthalate <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Di-n-butyl phthalate <10 <10 dry <10 <IO <IO <IO <8.79 <10 <3 <3 <3 <3 Di-n-octyl phthalate <10 <IO dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Fluoranthene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Fluorene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Hexachlorobenzene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 Hexachlorobutadiene <10 <10 dry <10 <IO <10 <10 <8.79 <27 <30 <30 <30 <30 Hexachlorocyclopentadiene <10 <10 dry <10 <10 <10 <10 <8.79 <IO <30 <30 <30 <30 Rexach loroethane <10 <10 dry <10 <10 <10 <10 <8.79 <27 <30 <30 <30 <30 fndeno( 1,2,3 -cd)pyrene <10 <10 dry <10 <10 <10 <10 <8.79 <IO <3 <3 <3 <3 Isophorone <10 <10 dry <IO <IO <10 <10 <8.79 <IO <35 <35 <35 <35 Naphthalene <10 <10 dry <10 <IO <IO <IO <8.79 <10 <3 <3 <3 <3 Nitro benzene <10 <10 dty <10 <10 <10 <10 <8.79 <IO <30 <30 <30 <30 N-N itrosodimethylamine <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 N-Nitrosodi-n-propylamine <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 N-N itrosod i phenylamine <10 <10 dry <10 <10 <10 <10 <8.79 <10 <30 <30 <30 <30 Pentach lorophenol <10 <10 dry <10 <10 <10 <10 <8.79 <50 <30 <30 <30 <30 Phenanthrene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Phenol <10 <10 dry <10 <10 <10 <IO <8.79 <10 <30 <30 <30 <30 Pyrene <10 <10 dry <10 <10 <10 <10 <8.79 <10 <3 <3 <3 <3 Pyridine <10 <10 dry <10 <10 <10 <10 29.1 <18 <30 146 <30 <30 Cell I Additional Rad io logical Ana lyses Date Thorium-228 Thorium-230 Thorium-232 Radiu m-226 ran iu m-23 3/234 Uranium-235/236 Uranium-238 Specific Gravity (nCi/L) <nCi/L) <nC i/U <nCi/L) (nC i/L) (nCi/L) {nCULl 8/4/15 1310 991000 6150 I 110 141000 8920 140000 1.21 5/28/15 204 782000 6730 829 96700 5980 100000 1.13 8/30/16 ND 677000 4480 497 2380 45800 1.15 8/29/17 2890 8100000 76000 391 353000 20400 344000 1.17 8/1/18 ND 856000 8410 443 97300 6970 97200 1.16 8/21 /19 1380 747000 4780 348 28400 1650 28700 1.15 8/21/2019 (Cell 65 -1500 663000 5720 434 25500 1960 27700 1.15 Duplicate ofCell l) 8/19/20 1090 1030000 6670 801 68300 4020 64600 1.33 9/1 /2 I 469 174000 1060 424 218000 11800 221000 1.38 9/1/2021 (Cell 65 -500 178000 946 281 212000 10300 223000 1.33 Duplicate of Cell I) 8/24/22 ND 58700 416 37 .6 71200 4460 77100 1.41 8/29/23 129 68100 359 86.3 30600 2110 32900 1.14 Date Thorium-228 Thorium-230 (pCi/L) (pCi/L) 8/4/15 ND 6680 8/30/16 ND 5050 8/29/17 ND 38500 8/1/20 18 ND 7390 8/1 /2018 (cell 65 - Duplic ate ol ND 6860 Cell 2 Slimes) 8/2 1/20 19 ND 1750 8/19/2020 ND 5180 9/1/21 ND 2780 8/24/22 ND 1050 8/29 /23 11.9 1940 Cell 2 Slimes Drain Additional Radio logica l Ana lyses Thorium-232 Radium-226 Uranium- (pCi/L) (pCi/L) 233/234 (pCi/L) ND 36 .6 11300 ND 52.4 11700 ND 51.2 111000 ND 36 .2 14900 ND 29 .8 10700 ND 62 .5 9300 ND 86 .0 8680 ND 63 .0 92 10 ND 28.5 9210 ND 76 .8 8620 Uranium-Uranium-238 Specific Gravity 235/236 (pCi/L) (pCi/L) 858 10500 1.09 599 10700 1.03 ND 75600 1.07 ND 12500 1.07 3440 12600 1.06 484 9150 1.03 917 8760 1.08 582 9040 1.07 ND 4590 1.05 470 8100 0.951 Cell 3 Additional Radi ologica l Analyses Date Thorium-228 Thorium-230 Thorium-232 Radium-226 Uranium-Uranium-Uranium-238 Specific Gravity (pCi/L) (pCi/L) (pCi/L) (pCi/L) 233/234 (pCi/L) 235/236 (pCi/L) (pCi/L) 8/4/15 ND 123000 1640 448 184000 10300 191000 1.21 5/28/15 798 131000 1290 202 557000 37900 591000 1.29 8/30/16 983 72500 1670 584 1960000 130000 2060000 1.62 lS/jU/lo (cell 65 - ND 67000 788 640 2520000 130000 2490000 1.53 Duplicate of Cell 3) 8/29/17 ND ND ND 101 37600 ND 32800 0.989 8/1/18 ND 28100 2310 79 .8 398000 24000 468000 1.21 8/21 /19 ND 6610 ND 48.0 6640 ND 5780 1.07 8/19/20 Not Sampled -Dry 9/1/21 ND 31.2 ND ND 144 ND 209 0.984 8/24/22 Not Sampled -Dry 8/29/23 Not Sampled -Dry Cell 4A Additional Ra diol ogica l A na lyses Date Thorium-228 Thorium-230 Thorium-232 Radi um -226 Uranium-Uranium-Uraoium-238 Specific Gravity (oCi/L) (oCi/L) CoCi/L) foCi/L) 233/234 (oCi/L) 235/236 (oCi/L) (oCi/L) 8/4/15 ND 374000 3490 663 57500 3720 64400 1.11 5/28/15 327 405000 3440 ND 61200 4030 62700 1.07 5/28 /2015 (Cell 65 - Duplicate 265 315000 3790 772 58600 3020 58300 NS ofCell 4A) 8/30/l 6 ND 466000 2870 1050 61100 3320 70900 1.10 8/29/17 ND 4450000 47700 759 637000 30600 692000 1.09 8/29/17 (Cell 65 - Duplicate ND 4080000 11000 822 602000 44900 616000 1.12 of Cell 4A) 8/1 /18 1970 539000 8230 59.2 88700 9900 86300 1.10 8/21 /19 941 430000 2870 260 9350 674 10900 1.02 8/19/20 1040 521000 4130 395 17200 991 13700 1.10 8/19/2020 (Cell 65 - Dup licate ND 488000 2200 372 14100 1000 14300 1.11 ofCell 4A) 9/1/21 1000 662000 6240 686 18000 1150 17900 1.11 8/24 /22 1370 707000 4740 578 26300 ND 21800 1.16 8129123 1030 161000 2110 87.1 24000 1320 24900 1.07 8/29/23 (Cell 65 - Duplicate 651 107000 1430 50.3 22100 1490 21900 1.09 of Cell 4A) Date Thorium-228 Thorium-230 (pCi/L) (pCi/L) 8/4/15 ND 25300 5/28/1 5 ND 25300 8/30/16 ND 134000 8/29/17 ND 5410000 8/1/18 ND 76000 8/21/19 1060 366000 8/19/20 ND 39500 9/1/21 462 101000 8/24/22 272 63600 8/24 /22 Duplicate 272 63600 ofCell 4A LOS 8/29/23 117 13100 Cell 4A LDS Addi t io nal Radiologi cal Anal yses Thorium-232 Radium-226 Uranium- (pCi/L) (pCi/1,) 233/234 (pCi/L) ND 19.3 9380 ND 19.3 9380 1130 51.1 46200 49200 286 852000 ND 38.2 28 800 2230 73 .4 13500 ND 18 .6 19000 731 33 .4 38200 405 6.44 42600 405 6.44 42600 109 5.29 7720 Uranium-Uranium -238 Specific Gravity 235/236 (pCi/L) (pCi/L) 504 10800 1.07 504 10800 NS 1900 40400 1.10 66200 851000 1.17 ND 30500 1.05 738 13000 1.02 711 16600 1.07 1720 37500 1.08 2580 40800 1.07 2580 40800 1.01 458 7120 1.01 Cell 4B Additional Radiolog ica l Analyses Date Thorium-228 T hori um-230 Tbo rium -232 Radi um-226 Uranium-233/234 Urani um-235/236 Uranium-238 Specific Gravity (pCi/L) (pC i/L) (oCi/L) (oCi/L) (pCi/L) (oCi/L) (pCi/.L) 8/4/15 ND 410000 2210 611 63500 3710 67000 1.12 5/2 8/15 122 346000 3790 544 65000 3870 66100 1.08 8/30/16 ND 595000 3510 715 90200 4090 90100 1.13 8/29/17 ND 3390000 56000 489 76000 8100 92700 1.07 8/1/18 ND 461000 7360 307 13700 ND 8420 1.08 8/21 /19 1080 434000 3490 296 11600 563 10800 1.10 8/19 /20 1280 606000 4320 360 17000 1080 17700 1.11 9/1/21 1590 523000 3240 495 58400 3780 60000 1.25 8/24/22 ND 11200 ND 23 .6 ND ND ND 1.07 8/29 /23 20.5 10700 43.4 3.55 201 8.69 195 1.04 Date Thorium-228 Thorium-230 loCi/L) (oCi/L) 8/4/15 ND 452000 8/4/15 Cell 65 - Duplicate of ND 436000 Cell 48 LOS) 5/28/15 334 487000 8/30/16 ND 368000 8/29/17 4680 5220000 8/1/18 1520 424000 8/21 /19 1030 368000 8/19/20 888 541000 9/1/21 803 452000 8/24/22 ND 232000 8/29/23 400 167000 Cell 4B LDS Addit ional Rad iologica l Analyses Thorium-232 Radium-226 Uranium- foCi/U foCi/L) 233/234 fo Ci/L) 3660 161 62600 4000 125 62600 5430 55.2 63500 1010 104 78600 43200 143 846000 5130 88.3 14300 2650 105 8840 4070 153 11700 3110 174 10700 1470 56 .5 8580 1020 48 .1 8700 Urani um-235/236 Uranium-238 Specific Gravity loCi/L) (oCi/L) 3890 60900 1.12 2680 61300 1.12 3900 65500 NS 3820 78900 1.11 64200 894000 1.07 ND 18400 1.09 412 9600 1.05 749 14500 I.I I 631 11400 I.IO 365 7950 1.07 414 8750 1.05 TabE Quality Assurance and Data Validation Tables Table E-1 Ho lding Time Evaluation** Required Holding Cell I Cell2 Cell 3 Cell 4A Cell4A Cell 4B Cell 4B Cell 65 Slimes (Cell4A Time Solutions Drain Solutions Solutions LOS Solutions LOS LDS) Carbonate 14 days OK OK OK OK OK OK OK OK Bicarbonate 14 days OK OK OK OK OK OK OK OK Calcium 6 months OK OK OK OK OK OK OK OK Chloride 28 days OK OK OK OK OK OK OK OK Fluoride 28 days OK OK OK OK OK OK OK OK Magnesium 6 months OK OK OK OK OK OK OK OK Nitrogen-Ammonia 28 days OK OK OK OK OK OK OK OK Nitrogen-Nitrate 28 days OK OK OK OK OK OK OK OK Potassium 6 months OK OK OK OK OK OK OK OK Sodium 6 months OK OK OK OK OK OK OK OK Sulfate 28 days OK OK OK OK OK OK OK OK pH (pH units) Immediately OK* OK* OK* OK* OK* OK* OK* OK* TDS 7 days OK OK OK OK OK OK OK OK Conductivity (umhos/cm) NIA OK OK OK OK OK OK OK OK 6 months ( except mercury which is 28 Metals days) OK OK OK OK OK OK OK OK Radiologies 6 months OK OK OK OK OK OK OK OK VOCS (including THF) 14 days OK OK OK OK OK OK OK OK 7 days to extraction/40 svocs days for analysis OK OK OK OK OK OK OK OK * Per the method, pH should be analyzed within 15 minutes of sample collection. Due to the nature of the solution matrix, sample handling in the field is minimized and pH is measured by the laboratory upon receipt. This procedure change was requested by and approved by DWMRC. ** -The voluntary analyses conducted for specific gravity, thorium isotopes, uranium isotopes, and radium-226 are for informational purposes only . These analyses do not have QAP required holding times, and therefore, are not included in the holding time evaluation . E-2 Labora tory Receipt Tempe rature Chec k Work Order N umber/Lab Set ID Receipt Temp GEL-635551 5.0, 3.0 °C Pace -S2308596 0.6 °C E-3: Analytical Method Check -Routine amples** Parameter QAP/Permit Method Method Used by Lab Ammonia (as N) A4500-NH3 G or E350. I E350.l Nitrate+ Nitrite (as N) E353.J or E353.2 E353.2 Metals E200.7 or E200.8 (Hg 245.1) E200 .7 and E200.8 and E245. I (Hg) Gross Alpha E900 .0 or E900.l or E903.0 E903.0 voes SW82608 or SW8260C or SW8260D SW8260D Chloride A4500-Cl B or E300.0 E300.0 Fluoride A4500-F C or E300.0 A4500-F C Sulfate A4500-SO4 E or E300.0 E300.0 TDS A2540 C A2540C Carbonate as CO3 , Bicarbonate as HCO3 A2320 B A2320B pH Not Spedfied A4500-H B Conductivity Not Specified A2510B SVOCs SW8270D SW8270E ** -The oluntary analyses conducted for specific gravity, thorium isotopes , uranium isotopes, and radium-226 are for i·nfom1ational purposes only . These analyses do not have QAP required methods, and therefore, are not included in the ana lytical method evaluation. E-4 Reporting Limit Evaluation** Parameter Permit-Specified RL Ammonia (as N) 25 mg/L Nitrate+ Nitrite (as N) 10 mg/L Metals ug/L Arsenic so Beryllium 4 Cadmium 5 Chromium 100 Cobalt 730 Copper 1300 Iron 11000 Lead 15 Manganese 800 Mercury 2 Molybdenum 40 Nickel 100 Selenium 50 Silver 100 Thallium 2 Tin 17000 Uranium 30 Vanadium 60 Zinc 5000 Gross Alpha 15 voes ug/L Acetone 700 Benzene 5 Carbon tetrachloride 5 Chloroform 70 Ch loromethane 30 MEK (2-Butanone) 4000 Methylene Chloride s Naphthalene 100 Tetrahydrofuran 46 Toluene 1000 Xylenes 10000 Major Ions -Chloride 1.0 mg/L Fluoride 4mg/L Sulfate 1000 mg/L TDS 1000 mg/L Carbonate as CO3 , Bicarbonate as HCO3 * Calcium, Magnesium , Potassium , Sodium * SVOCs (from the 8270D LLD) ug/L 1,2,4-Trich lorobenzene 10 I ,2-Dichlorobenzene 10 E-4 Reporting Limit Evaluation** Parameter Permit-Specified RL 1,3-Dichlorobenzene 10 1 ,4-Dichlorobenzene 10 1-Methylnaphthalene 10 2,4,5-Trichlorophenol 10 2 ,4 ,6-Trichlorophenol 10 2,4-Dichlorophenol 10 2,4-DimetJ1ylphenol 10 2,4-Din itrophenol 50 2,4-Dinitrotoluene 10 2 ,6-Dinitrotoluene 10 2-Chloronaphthalene 10 2-Chlorophenol 10 2-Methylnaphthalene 10 2-Methylphenol 10 2-Nitrophenol 10 3&4-Methylphenol 10 3,3 '-Dichlorobenzidine 20 4 ,6-Dinitro-2-methylphenol 50 4-Bromophenyl phenyl ether 10 4-Ch loro-3-methylphenol 20 4-Chlorophenyl phenyl ether 10 4-N itropheno I 50 Acenaphthene 10 Acenaphthylene 10 Anthracene 10 Azobenzene * Benz(a)anthracene 10 Benzi dine * Benzo(a)pyrene 10 Benzo(b )fluoranthene 10 Benzo(g,h,i)perylene 10 Benzo(k)fluoranthene 10 Bis(2-chloroethoxy)methane 10 Bis(2-chloroethyl) ether 10 Bis(2-cb loroisopropyl) ether 10 B is(2 -ethylhexyl) phthalate * Butyl benzyl phtbalate 10 Chrysene 10 Dibenz(a,h)ai1thracene 10 Diethyl phthalate 10 Dimethyl phthalate 10 Di-n-butyl phthalate IO Di-n-octyl pbtJ1alate 10 Fluoranthene 10 Fluorene 10 E-4 Reporting Limit Evaluation** Parameter Permit-Specified RL Hexachlorobenzene 10 H exach lorobuta<l iene 10 Hexacb lorocyclopentad iene 10 Hexach loroethane 10 Jndeno( 1,2 ,3-cd)pyrene 10 lsophorone 10 Naphthalene 10 Nitrobenzene 10 N-Nitrosodimethylamine * N-Nitrosodi-n-propylamine 10 N-Nitrosodiphenylamine 10 Pentach lorophenol 50 Phenanthrene 10 Phenol 10 Pyrene 10 Pyridine * All analy es were reported to the required RLs unless noted in the text. * Repo11i11g limits for these analytes are not specified in either the Permit or EPA Method 8270D. ** -The oluntary analyses conducted for specific gravity. thorium isotopes uranium isotopes, and radium-226 are for informational purposes onl . These analyses do not ha e QAP required repotting limits and therefore are not included in the reporting limit evaluation. E-5: Trip Blank Evaluation Lab Report Constituent ResuJt Units 2-Butanone ND ug/L Acetone ND ug/L Benzene ND ug/L Carbon tetrachloride ND ug/L Chlorofonn ND ug/L GEL-635551 Ch loromethane ND ug/L Methylene Chloride ND ug/L Naphthalene ND ug/L Tetrahydrofuran ND ug/L Toluene ND ug/L Xylenes ND ug/L E-6 Duplicate Sa mple Relative Percent Difference** Major Ions (mg/I) Cell4A Cell65 RFD% Carbonate <5 <5 NC Bicarbonate <5 <5 NC Calcium 714 722 I.I Chloride 10300 10600 2.9 Fluoride 3 3 0.0 Magnesium 3140 3200 1.9 Nitrogen-Ammonia 5850 5680 2.9 Nitrogen-Nitrate 94 136 36.1 Potassium 1940 1990 2.5 Sodium 19100 19600 2 .6 Sulfate 64100 65800 2.6 pH (s .u.) 2.3 2.3 0.0 TDS 113000 109000 3.6 Conductivitv (umbos/crn) 70600 73600 4 .2 Metals(m~/1) Arsenic 4.01 4.18 4.2 Beryllium 0.314 0 0.3 Cadmium 3.10 3.15 1.6 Chromium 3.84 3.87 0.8 Cobalt 22.9 23.4 2 .2 Copper 417 425 1.9 Iron 686 700 2.0 Lead 1.4 1.4 0 .0 Manganese 148 151 2.0 Mercury 0.001 0.001 0.0 Molybdenum 9.59 9.65 0.6 Nickel 45.8 47.3 3.2 Selenium 1.7 1.6 6.1 Silver 0.16 0.14 13.3 Thallium 0.39 0.39 0.0 Tin <0.02 <0.02 NC Uranium 68 .2 69.5 1.9 Vanadium 98 .7 101 2.3 Zinc 247 254 2.8 Radioloe:ics foCi/1) Gross Alpha* 9160 9680 3.31 VOCS(m~/l) Acetone <25 <25 NC Benzene <5 <5 NC Carbon tetrachloride <5 <5 NC Chloroform <5 <5 NC Chloromethane <5 <5 NC MEK <25 <25 NC Methylene Chloride <25 <25 NC Naphthalene <5 <5 NC Tetrahydrofuran <25 <25 NC Toluene <5 <5 NC Xvlenes <15 <15 NC SVOCS(u~) 1,2,4-Trichlorobenzene <30 <30 NC 1,2-Dichlorobenzene <30 <30 NC 1.3-Dichlorobenzene <30 <30 NC 1,4-Dichlorobenzene <30 <30 NC 1-Methylnaohthalene <3 <3 NC 2,4,5-Trichlorophenol <30 <30 NC 2,4,6-Trichlorophenol <30 <30 NC 2,4-Dichlorophenol <30 <30 NC 2.4-Dimethylphenol <30 <30 NC 2,4-Dinitrophenol <50 <50 NC 2,4-Dinitrotoluene <30 <30 NC 2,6-Dinitrotoluene <30 <30 NC 2-Chloronaphthalene <4.10 <4.10 NC 2-Chlorophenol <30 <30 NC E-6 Duplicate Sa mple Relative Percent Difference** Major Ions (mg/I) Cell4A Cell 65 RPD% 2-MeUivlnaphthaJene <3 <3 NC 2-Melhylphenol <30 <30 NC 2-Nitrophcnol <30 <3 0 NC 3&4-Meth ylpheool <3 7 <37 NC 3 ,3 '-Dichlorobenzidine <33 <33 NC 4,6-Dinitro-2-methvlohcnol <30 <3 0 NC 4-Bromopbenvl phen vl ether <3 0 <3 0 NC 4-Chloro-3-metbylphenol <30 <30 NC 4-Chlorophenyl phenyl ether <30 <3 0 NC 4-Niuophenol <30 <3 0 NC Acenaph th ene <3 <3 NC Acenaph th ylene <3 <3 NC Anthracene <3 <3 NC Azobenzene ( 1,2-Oi phcnvlhvdrazine) <3 0 <30 NC Benz( a)anthracene <3 <3 NC Benzidine <3 9 <3 9 NC Beo zo(a)pyrene <3 <3 NC Benzo(b)fluo ranth ene <3 <3 NC Benzo(g,h i)perylcne <3 <3 NC Benzo(k)Ouoran th ene <3 <3 NC Bis(2-chlorocthoxv)methane <30 <3 0 NC Bis(2-chloroelhvl) ether <3 0 <3 0 NC Bis(2-chloroisopropyl) ether <3 0 <3 0 NC Bis(2-elhylhexyl) phthalate <3 <3 NC Butyl benzv l phtbalatc <3 <3 NC Chrysene <3 <3 NC Dibenz{a ,h)anthracene <3 <3 NC Diethy l phtJrnlate <3 <3 NC Dimethyl phtbalatc <3 <3 NC Di-n-bULy l phthalate <3 <3 NC Oi-n-oct.yl phthalate <3 <3 NC Fluoranthene <3 <3 NC Fluorene <3 <3 NC Hexachlorobcozene <3 0 <30 NC Hexachlorobuta:dicnc <30 <30 NC 1-lexach lo rocyclopentadieo e <30 <3 0 NC HexachloroetJ1am: <3 0 <3 0 NC lndeno( 1,2,3-cd)ovrene <3 <3 NC lsophoronc <3 5 <35 NC Naph th alene <3 <3 NC Nitro benzene <30 <3 0 NC N-N.itrosodimelhylamine <3 0 <30 NC N-Nitrosodi-n-propylamine <30 <3 0 NC N-Niuosodiohenvlamine <30 <3 0 NC Pentachlorophenol <3 0 <30 NC Phenanthrene <3 <3 NC Phenol <3 0 <30 NC Pyrenc <3 <3 NC Pyridine <30 <30 NC Highlighted cells indicate an RPO that exceeded the 20% RPO criteria Per the approved QAP, an RPO greater than 20% is acceptable if the reported results are less than 5 times the RL. These results are provided for information only. • Duplicate checks reported for gross alpha minus RN and U are not %RPO. Calculated values are based on the formula in the approved QAP. ** -The voluntary analyses conducted for specific gravi ty , thorium isoto pes, uranium iso topes. and radium-226 are for informational purposes only . These analyses do not have QAP requ ire d duplicate requirements, and therefore. are not included in the duplicate evaluation. NC = Not Calculated. E-7 Radiologies Counting Error Gross Alpha minus Rn & Counting Gross Alpha U Precision Error :S Within Sample ID minusRn&U (±) 20% GWQS GWQS Cell l 10100 114 y 15 NA Cell 2 Slimes 1760" 49.7 y 15 NA Cell 3 Not Sampled -dry NC 15 NA Cell 4A 9160 112 y 15 NA Cell 4A LDS 2840 63.7 y 15 NA Cell 4B 2030 53.4 y 15 NA Cell 4B LDS 14900 139 y 15 NA Cell 65 (D uplicate of Cell 4A) 9680 1 IO y 15 NA GWQS = Groundwater Quality Standard NA -the counting error is less than 20% of the activity as required by the GWDP and this check column is not applicable. NC = Not calculated. The sample results are nondetect and the check is not applicable. E-8: Laboratory Matrix QC Matrix Spike % Recovery Comparison Lab Report Sample ID Analyte MS%REC S2308596 Slimes #2 Cobalt 54 .7 S2308596 Slimes #2 Copper 22.5 S2308596 Slimes #2 Iron -1820 S2308596 Slimes#2 Manganese -8.06 S2308596 Slimes #2 Nickel -13.5 S2308596 Slimes #2 Silver 67 .9 S2308596 Slimes #2 Vanadium -213 S2308596 Slimes#2 Zinc -547 S2308596 Slimes #2 Magnesium 69 S2308596 Cell 4A LDS Ammonia 1650 S2308596 Cell 4B Nitrate-Nitrite 86.2 NC = Not Calculated *= Analyte concentration is too high for accurate matrix spike recovery and/or RPD . N I A = QC was not performed on an EFRI sample. MSD %REC REC Range 56.7 70 -130 22 .7 70 -130 -1780 70-130 -5.18 70 -130 -8.7 70-130 65.0 70 -130 -203 70-130 -518 70 -130 71 70 -130 -619 90-110 83.7 90-1 JO * Recovery was not calculated as the analyte level in the sample was significantly greater than 4 times the spike amount LCS % Recovery All Laboratory Control Samples were within acceptance limits. Laboratory Duplicate % Recover y Comparison Lab Duplicate Lab Report Well Analyte Sample Result Result RPO% S2308596 Cell 1 Antimony 0.08 0.18 75 .7 S2308596 Cell 1 Selenium 2.7 2.1 22.3 S2308596 Cell I Thallium 1.88 1.48 23.5 Method Blanks All Method Blanks for the quarter were non-detect. Surrogate % Recovery All surrogate recoveries were within acceptance limits. RPD 0.741 0 .0466 0.432 0.538 0.884 4.48 0.671 1.06 0.909 3 .84 2.14 RPDRange % 0-20 0-20 0-20