2025-06-23_REVISION - M1980244 (23)

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Docusign Envelope ID:45B9721 C-FDE2-4821-B686-80BBC79CA6DD 15. Within Section 2.7.1, Surface Mine Backfill Areas, Paragraphs 7 and 8 contain conflicting statements regarding the backfilled East Cresson WHEX. One states the backfill will • promote free drainage of stormwater to the surrounding surface whereas the other paragraph states that per TR96 the backfill will result in stormwater flowing back into the pit. Please revise the Paragraph 7 text. Comment acknowledged. Section 2.7.1 has been revised to reflect that as per TR96, backfilling of WHEX will result in stormwater flowing back into WHEX, away from Grassy Valley. 16. Due to the constructed outside slopes of VLF1,the reclamation plan and cost estimate has major tasks (please refer to CIRCES Tasks A2000 to A2011) of moving material to achieve the approved post-mining slope grade. Please demonstrate that once VLF1 Phase 6 is fully built out there is still available space within the original crusher pocket area to place the approximate 25 million cubic yards of cut material. The configuration for AM-14 has demonstrated a greater capacity than initially verified. Upon full completion of VLF1, Phase 6, a total capacity of 127,448 million cubic yards will be available which is more than sufficient to accommodate the approximate 25 million cubic yards of cut material. Exhibit F—Reclamation Plan Map (Rule 6.4.6): 17. As Reclamation Plan Maps F-2 through F-8 provide increased detail,the Division request either Map F-1 be revised or a Map F-la be provided with the shading and cross hatching removed to allow for clear review of the proposed post mining contour lines. The Reclamation Plan Maps have been modified for clarity and are provided in Attachment 4. Shading and cross hatching has been removed from Map F-1 to allow for easier review of the proposed posed mining contour lines. • 18. The following items need to be addressed on one or more of the Exhibit F Reclamation Plan Maps: a. Please review and correct various contour lines errors (e.g. intersecting and termination of lines in the North Cresson Mine area). The Exhibit F Reclamation Plan Maps have been revised and are included in (Attachment 4). b. Contour elevation labels are missing on most of the Exhibit F Maps. Please revise the maps to show clear and abundant elevation labels. Revised maps with contour elevation labs are included in Attachment 4 The contour interval (35 feet) has been added to the legend. c. An Undisturbed Area (dark green shaded polygon) near the Mill Area is depicted, however AM14 expansion will incorporate some of this area. Please modify this Undisturbed Area accordingly. This area has been removed from the Exhibit F maps. d. It appears the posting-mining topography depicted pre-dates the AM14 VLF expansions. Please update the topography showing what the final reclaimed VLF1 and VLF2 surfaces will look like. Revised Exhibit F maps with updated topography are included in (Attachment 4). e. SThe South Cresson mine area backfill and accessible areas where growth media can • be placed per TR142 are not depicted correctly.Additionally, on F-6, the cross- SSR Mining Inc. PAGE 5/19