Laserfiche WebLink
July 10, 2013 C-1981-046/Sunlight Mine BFB <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 N - Roads <br /> N -Availability of Records N - Reclamation Success <br /> R - Backfill & Grading R - Revegetation <br /> N - Excess Spoil and Dev. Waste R - Subsidence <br /> N - Explosives N - Slides and Other Damage <br /> N - Fish& Wildlife N - Support Facilities On-site <br /> N - Hydrologic Balance N - Signs and Markers <br /> N -Gen. Compliance With Mine Plan N - Support Facilities Not On-site <br /> N -Other N - Special Categories Of Mining <br /> N - Processing Waste N -Topsoil <br /> COMMENTS <br /> This was a complete inspection of the Sunlight Mine conducted by Brock Bowles, Susan Burgmaier, Mike <br /> Boulay,Janet Binns and Steve Renner of the Colorado Division of Reclamation, Mining and Safety. The permit <br /> for this mine was revoked and the bond was forfeited. The reclamation was completed by the Division. Weather <br /> conditions were sunny and warm. The ground was dry. <br /> The primary purpose of this inspection was to measure the vegetation cover and production for all areas of the <br /> minesite. <br /> BACKFILL and GRADING—Rule 4.14 Contemporaneous Reclamation 4.14.1; Approximate Original Contour <br /> 4.14.2; Highwall Elimination 4.14.1(2)(f); Steep Slopes 4.14.2,4.27; Handling of Acid and Toxic Materials <br /> 4.14.3; Stabilization of Rills and Gullies 4.14.6: <br /> The backfilled upper portal area did not have signs of slumping or cracking. The subsidence area above <br /> the lower fan portal was approximately the same size as the last inspection. <br /> REVEGETATION—Rule 4.15 Vegetative Cover; Timing: <br /> Vegetation sampling was done at the mine for the purpose of termination of jurisdiction. Cover and <br /> production values were measured using 30 - 10 meter transects. The mine site has 3 separate areas and the number <br /> of transects per area was determined by the size of each area: upper portal - 14, scale-2 and lower portal - 14. <br /> Twenty five random points were generated in ArchMap for the upper and lower areas and five were generated for <br /> the scale area. A Trimble Yuma GPS was used for navigation. A transect was laid at each point in-line to the next <br /> sequentially numerical transect point. A transect was eliminated if it went through an undisturbed area, the slope <br /> was too steep in which sampling would cause excessive damage, it traversed the area of the subsidence which was <br /> a safety risk to the inspectors(see subsidence section)or it overlapped a previous transect. <br /> Cover data was taken by using a10-point laser bar mounted on a tripod. The laser bar is 1 meter long with each <br /> laser 10 cm apart and was set perpendicular along the transect line at 1 meter intervals. Ten points were recorded <br /> at each meter starting at 1 meter, for a total of 100 points per transect. Production samples were taken by clipping <br /> Number of Partial Inspection this Fiscal Year: 1 <br /> Number of Complete Inspections this Fiscal Year: 2 <br /> Page 2 of 3 <br />