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Page 4 of 6 <br /> the review process. The application was deemed complete on January 24, 2017, after the <br /> Division received proof of publication of the applicant's public notice. The Division issued a <br /> Proposed Decision for SL6 on 14 March 2018. <br /> Since the approval of RN5, The Division has approved a Phase II/III bond release application <br /> (SL7), and a Phase II bond release application (SL8). SL7, issued in 2020, released 39.4 Phase 11 <br /> acres and 354 Phase III acres for a total bond release of 354.4 acres. SL8 released 193 acres of <br /> Phase H reclamation. <br /> As indicated above, in May of 2011 landslides occurred in several areas within the Yoast Mine <br /> permit boundary and within areas previously released from Phase I liability. Most of the <br /> instability was limited in extent, with three exceptions: <br /> o the Pond 012 slide area, <br /> o the Neck Pit area, <br /> o and an area east of Pond 013. <br /> Major landslides occurred in the Pond 12 slide area on four separate occasions dating back to 2006, <br /> and minor slumps and sloughing had been ongoing through 2011. In 2011, SPL completed the <br /> regrading and drainage installation portion of the approved slide remediation plan (Technical <br /> Revision No. 46). In July of 2011 the Division, SPL and the Colorado Geological Survey <br /> evaluated all slide areas. It was determined that the best course of action for the Pond 012 area <br /> was to implement the previously approved and nearly completed remediation plan. The <br /> recommendation for the Neck Pit and Pond 013 areas was to leave the slide areas in its post <br /> movement configuration with minor manipulation to facilitate drainage and ensure safety of the <br /> public and wildlife utilizing the area. The scarps of the Neck Pit and Pond 013 slides were <br /> graded to lessen the slope to ensure that the areas could be safely traversed by wildlife and <br /> humans. Also for the Neck Pit and Pond 013 slide areas, drainage channels were excavated to <br /> prevent saturation of the slide mass. The toe areas were left intact to buttress the remaining <br /> undamaged uphill blocks. Remediation work in all three areas was completed in the fall of <br /> 2011 and comprised a portion of the SL6 Phase I partial bond release application. The Pond 12A <br /> and Pond 14 watersheds were phase 11 and phase III released with SL7. <br /> Due to the fact that the Pond 013 and Neck Pit slide areas were unstable and required regarding, <br /> the Division required SPL to resume Phase I liability on those areas. In November of 2012 the <br /> Division issues a proposed decision for a Surety Increase (SI1)at the Yoast Mine. This decision <br /> reinstated SPL's liability for backfilling, grading and drainage reestablishment on 32.7 acres of <br /> instability for the Pond 013 and the Neck Pit slide areas. Pond 13 was not previously considered <br /> for Phase I bond release as it was within the Pond 13 slide area parcel that was required to be <br /> observed for at least one year following the 2012 slide activities prior to being eligible for bond <br /> release. The Pond was ultimately partially released in the SL6 partial phase I permitting action. <br /> Enforcement Actions <br /> No Notices of Violations have been issued to the Yoast Mine permit since the last renewal <br /> (RN5). <br />