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SSR Mining Inc. PAGE 3/7 Tables 7. Table 3 shows a summary of weather data from April 12, 2024 to September 4, 2025 and notes when no work was performed at the site. Section 3.2 of the Introduction states that no earthwork activities were affected by ambient freezing temperatures as per the project specifications. The Table includes multiple days where the low ambient temperature was below 32°F with no remarks given. Please clarify the remarks column and the explain the difference between a “blank” vs No Work Performed. Please also clarify if any temperature measurements of the fill were taken at the 3- and 6-inch depths per the specifications and provide this data or state that no fill temperature measurements were needed to be taken because ambient air temperature was not less than 32°F for more than one hour over the preceding 24 hours on days when fill was being placed as Table 3 shows the coldest low ambient temperature when SLF Compaction was noted was 35°F on May 30, 2025. R/. No Structural Fill was placed or compacted during or directly after freezing temperatures. Soil Liner Fill was hauled and sealed during the month of May when the nighttime temperatures were dipping below 32 F. Soil sealing is when the contractor spreads the Soil Liner Fill thicker than required and lightly compacted to prevent erosion and a change in moisture content. Prior to acceptance, the Soil Liner Fill was trimmed and compacted to meet the technical specifications. No Soil Liner Fill was trimmed closer to grade during or directly after freezing temperatures. It was determined that the method of placement of the Soil Liner Fill was acceptable and not subject to temperature monitoring. Geomembrane installation, covering Soil Liner Fill, began on 6/13/25, 16 days after the last recorded freezing temperature. Table 3 – Weather Summary has been updated to show “No Temperature Relevant Soils Work” in the blank sections of the Remarks Column. The updated Table 3 is provided as part of the amended report. 8. Table 3 - Summary of Weather Data: states that No Work was performed on Friday, May 9, 2025. However, Table 5 shows that a SLF sample was taken on 5/9/2025. Please confirm whether or not work on the SLF occurred on 5/9/2025 or if only a sample was taken th at day. R/. The Contractor, JHL and Kelley Trucking, were offsite on 5/9/2025 due to inclement weather. SLF Placement did not begin until the following week. The Project Resident was onsite on 5/9/2025 and obtained a sample from the existing Upper Dump 1 Stockpile for testing. 9. Table 5 - CQA Earthworks Testing Summary – Soil Liner Fill: Please explain the discrepancy between the compaction test report for sample SLF-57-C and Table 5. The compaction test report states that the maximum dry density was 125.2 pcf and optimum moisture was 10.1%. Table 5 states that this sample had a maximum dry density of 124.8 pcf and an optimum moisture of 10.2%. R/. Table 5 had been filled out upon initial completion of the proctor by the Project Resident. When setting up the Permeability testing it was noted that the Moisture Density Curve did not roughly follow the Zero Air Voids (ZAV)/100% saturation curve, indicating an error in the test per ATSM D698 Section 11.3.2 – Note 10. The original highest moisture percentage moisture density point in the test was removed from the data set and a subsequent test point at the same moisture percentage from the original material was ran. Unfortunately, that results for sample SLF-57-C was not updated in Table 5 prior to the submission of the RoC report. However, Table 5 has been corrected and provided as part of the amended report. 10. Table 5 - CQA Earthworks Testing Summary – Soil Liner Fill: Please explain the discrepancy between the compaction test report for sample SLF-58-C and Table 5. The compaction test report states that the maximum dry density was 127.5 pcf and Optimum moisture was 10.6%. Table 5 states that this sample had a maximum dry density of 125.2 pcf and an optimum moisture of 10.1%. Docusign Envelope ID: C6AD8C9C-B5B3-4338-ADF1-222396BA57C7