2023-02-03_REVISION - C1981010 (4)

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which is already grouted and sealed, it would not be sealed again during abandonment. T126—Remove task,please add these wells to task 122 as reflected in table A-13.3. T127— This task is listed in the summary, but not included in the copy of tasks. This task needs removed, the wells associated with it should be added to task 122 as reflected in table A-13.3. The Division has reviewed all wells associated with the approved Trapper's PAP and provided information in Table A-13.3.As requested,Borehole tasks have been consolidated to correspond to similar borehole use.Additionally,duplicative tasks for the addition of Drill Rig has been removed as equipment is already included within the borehole sealing task selection. It should be noted that CIRCES only accounts for whole inch diameters boreholes in two inch increments.All partial inch diameter boreholes were rounded up to ensure the Division has sufficient bond monies to ensure reclamation of boreholes can be completed if the Division were to perform the reclamation. Task 130,Demolish structures, remove materials and debris; One revision,please remove the "Seed Trailer"cost, this feature was disposed of several years ago. In order to release bond liability associated with the Seed Trailer which was constructed,the structure must go through the proper requirements of bond release.No changes were applied to the Division's RCE. Task 131, Culvert Removal and Disposal;Please revise this task to match App A. table A-12.2. Add culvert A-13 Check diameters of culverts AE-4,7,12;BC-I;D-16,17;SA-1 Remove culverts AE-14,15;AX-1;BH-1; SA-2,3,4,4A The Division has reviewed all culverts associated with the approved Trapper's PAP and provided information in Table A-12.2. Please see the updated Task 131. TaskN19, N20, N21, N22, Seeding J, land C Pits; These tasks all include a "Weed control spraying"cost under "Tilling"at$290.40. This is inconsistent with the other seeding tasks, please remove this cost from these tasks. As noted earlier,the Division has reviewed all Revegetation tasks in comparison to previously approved RCE's and the approved Trapper's PAP and has updated tasks for consistency as necessary. Additionally the PR-I I Cost Calculation—Worst Case Adjustment spread sheet has been attached (Google Drive link)for your review.This spreadsheet details the calculations for the Reclaimed Not Yet Bond Released task associated in the PR-I I RCE. In addition to the RCE,I have included at the end of this memo an Appendix 1 which breaks down the Division's methodology in calculating Trapper's RNYBR associated costs in hopes of adding clarification to the amount calculated for Trapper's review. This concludes my review of Trapper Mine's reclamation cost estimate associated with the proposed PR- 11. If you have any questions,feel free to contact me. Sincerely, Trapper Mine RCE Memo February 3,2022