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September 28, 201 1 C -1982 -057 /Seneca II -W Mine SLB <br /> <br /> <br />Number of Partial Inspection this Fiscal Year: 6 <br />Number of Complete Inspections this Fiscal Year: 1 <br /> <br /> Page 2 of 5 <br /> <br /> <br /> <br />Inspection Topic Summary <br />NOTE: Y =Inspected N =Not Inspected R =Comments Noted V =Violation Issued NA =Not Applicable <br />NA - Air Resource Protection <br />N - Availability of Records <br />N - Backfill & Grading <br />NA - Excess Spoil and Dev. Waste <br />NA - Explosives <br />N - Fish & Wildlife <br />R - Hydrologic Balance <br />Y - Gen. Compliance With Mine Plan <br />NA - Other <br />NA - Processing Waste <br /> <br />N - Roads <br />N - Reclamation Success <br />N - Revegetation <br />NA - Subsidence <br />R - Slides and Other Damage <br />N - Support Facilities On -site <br />N - Signs and Markers <br />NA - Support Facilities Not On -s ite <br />NA - Special Categories Of Mining <br />N - Topsoil <br /> <br /> <br />COMMENTS <br /> <br />This was a partial inspection of the Seneca IIW Mine conducted by Susan Burgmaier of CDRMS. Jill Carlson of <br />the Colorado Geological Survey (CGS) participated in the inspection. CGS has assi sted CDRMS in the <br />investigation and remediation of the landslides that have occurred on site this year. <br />Weather conditions at the site were sunny and warm; the area has been in a fairly dry pattern the last few weeks. <br />HYDROLOGIC BALANCE - Rule 4.05 Dr ai nage Control 4.05.1, 4.05.2, 4.05.3; Siltation Structures 4.05.5, <br />4.05.6; Discharge Structures 4.05.7, 4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water <br />Monitoring 4.05.13; Surface Water Monitoring 4.05.13; Drainage – Acid and Toxic Materi als 4.05.8; <br />Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: <br /> Ponds 005, 006, and 016 and Stocktanks T18 and T5 all held water. Spoils springs were flowing above <br />Pond 006 (at the base of the north A/B pits) and above Pond 016A/base of shrub plot . The french drains installed <br />across the Mine Entrance Haul Road (MEHR) and in the MEHR slide area were both discharging. <br />REVEGETATION – Rule 4.15 Vegetative Cover; Timing: <br /> Cattle were grazing the north area reclamation between Stocktanks T18 and T5. <br /> <br />SLIDES and DAMAGE - Rule 4.12: <br /> The pit ramp/shrub plot slide was inspected. The operator completed regrading of the scarp of the slide, <br />but had not yet installed drains. Two drains will need to be constructed; one at the east end of the slide, along the <br />existing gullies and the other on the western end where there is a low area/seep. Both of these drains should be <br />constructed fro m the toe of the slide to the existing road ditch. The regraded scarp needs to be reseeded this fall. <br /> <br />Work on the approved remediation plan for the Pond 016/016A slide area was underway. All of the sediment had <br />been removed from Pond 016A and placed on the slope northeast of the pond. Excavation of the PM -2 channel <br />and underdrain was also in progress. Material from the toe of the slide area, between the shrub plot and Road J/K, <br />was being excavated and placed in Pond 016A to eliminate the pond. Materia l placed in the pond appeared to be <br />within the maximum 12” lift thickness. A sheepsfoot compactor was compacting the material as it was placed. <br />Slope reduction and grading on the slope to the north had not been started. Rock was being hauled on site for