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October 21, 2020 C-1981-022/Elk Creek Mine LDS <br />Inspection Topic Summary <br />NOTE: Y Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable <br />N - Air Resource Protection <br />N - Availability of Records <br />N - Backfill & Grading <br />N - Excess Spoil and Dev. Waste <br />N - Explosives <br />N - Fish & Wildlife <br />R - Hydrologic Balance <br />N - Gen. Compliance With Mine Plan <br />N - Other <br />N - Processing Waste <br />N - Roads <br />R - Reclamation Success <br />R - Revegetation <br />N - Subsidence <br />N - Slides and Other Damage <br />R - Support Facilities On -site <br />N - Signs and Markers <br />N - Support Facilities Not On -site <br />N - Special Categories Of Mining <br />R - Topsoil <br />COMMENTS <br />This was a partial inspection by Leigh Simmons of the Colorado Division of Reclamation, Mining and Safety <br />(Division). The inspection was attended by Doug Smith of Oxbow Mining, LLC. (Oxbow). Representatives of the <br />Office of Surface Mining, Reclamation and Enforcement (OSMRE), the US Forest Service Paonia Ranger District <br />(USFS), and the Bureau of Land Management, Uncompahgre Field Office (BLM) were notified but did not attend. <br />The weather was clear and dry. The focus of the inspection was on the reclamation success of sites identified in <br />the SL-3 partial phase II bond release application, (all of which had been inspected earlier in the summer in <br />connection with the SL-2 bond release application). <br />Division staff used digitzed maps from the Permit Application Packet (PAP) in the field. The maps and additional <br />layers of digitized features were added to an ArcGIS web map which was viewed using the Esri Collector app <br />running on modern Android cell phones. The phones' internal GPS receivers allowed the verification (and <br />correction if necessary) of feature locations, and for inspectors to record attributes and photographs associated <br />with each digitized feature. The field data was collected offline then synced to the web map (see figure 1) and was <br />later analysed further in the office. Tables 1 & 2 are populated with data compiled from the geodatabase displayed <br />in the web map, although not all of the attribute fields are shown. <br />Comments in this inspection report are included in the tables, so as to be easily related to the sites inspected, rather <br />than under the rule that the comments relate to. <br />Observations pertaining to the following rules were made during the inspection: <br />HYDROLOGIC BALANCE - Rule 4.05 <br />Drainage Control 4.05.1, 4.05.2, 4.05.3; Siltation Structures 4.05.5, 4.05.6; Discharge Structures 4.05.7, <br />4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water <br />Monitoring 4.05.13; Drainage — Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream <br />Buffer Zones 4.05.18 <br />RECLAMATION SUCCESS - Rule 4.15, Rule 3 <br />Number of Partial Inspection this Fiscal Year: 3 <br />Number of Complete Inspections this Fiscal Year: 1 <br />Page 2 of 15 <br />