2020-12-07_INSPECTION - C1981019

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December 1, 2020 C-1981-019/Colowyo Coal Mine ZTT AVAILABILITY OF RECORDS PERMIT RECORDS HYDROLOGIC RECORDS COR030000& DRMS Permit Exp. 11/5/22 NPDES Permit CO 0045161 Permit Application w/Revisions Ok NPDES Records Thru 31d Qrt `18 Findings Document MT-08 Stormwater Management Plan 2017 Insurance Certificate 8/1/21 SPCC Plan March 2019 Bond Document Ok MSHA Pond Inspections N/A Phased Bond Release SL-19 N/A Documents/Findings State Engineer's Pond Inspection Air Emission Permits 95MF 1040& Quarterly Pond Inspections Thru 31d Qrt `20 16MF 1324F County Special Use Permits SUP08-10&C- Annual Hydrology Reports 2020 05-05 UG Mining Landowner Notification N/A • Ground Water Monitoring Ok Subsidence Monitoring Reports N/A • Surface Water Monitoring Ok Subsidence Monitoring Data N/A • Spring&Seep Monitoring No Rill&Gully Survey June 2020 • Mine Water Discharge N/A Monitoring Vegetation Monitoring Data 2020 ARR • Mine Inflow Study N/A Specific Variance Approvals Ok • Water Consumption Records Ok Annual Reclamation Reports 2020 Well Permits 61171F Midterm Review Documents MT-08 DRMS/OSM Inspection Thru Oct`20 Reports/Enforcement Actions(3 Years) BLASTING RECORDS Transfers/Succession of Operator Ok Blasting Publication 2020 Temporary Cessation Notification N/A Blasting Records(3 years) Thru Nov. `20 Reclamation Cost Estimate MT-08 ATFE Explosives Permit Ok CERTIFICATIONS Blasting Variances N/A Pond Certifications Ok Pre-Blast Surveys Ok Annual Certifications for N/A Impoundments Fill Certifications for Excess Spoil Ok ADDITIONAL RECORDS or Underground Development Waste (specify) • Quarterly Inspections Thru 31d Qrt `20 • Compaction Testing N/A • Final Certification N/A Coal Processing Waste Banks N/A Haul Road Certifications Ok Access Road Certifications Ok COMMENTS: Number of Partial Inspection this Fiscal Year: 3 Number of Complete Inspections this Fiscal Year: 2 Page 7 of 7