Laserfiche WebLink
February 18, 2014 C- 1996- 084 /Lorencito Canyon Mine LDS <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 />NA - Backfill & Grading <br />R - Excess Spoil and Dev. Waste <br />NA - Explosives <br />Y - Fish & Wildlife <br />R - Hydrologic Balance <br />R - Gen. Compliance With Mine Plan <br />N -Other <br />NA - Processing Waste <br />Y -Roads <br />N - Reclamation Success <br />Y - Revegetation <br />NA - Subsidence <br />NA - Slides and Other Damage <br />NA - Support Facilities On -site <br />Y -Signs and Markers <br />Y - Support Facilities Not On -site <br />Y - Special Categories Of Mining <br />Y - Topsoil <br />COMMENTS <br />This was a partial inspection by Leigh Simmons of Colorado Division for Reclamation, Mining and <br />Safety, (the Division). The weather was fine. Several permitting actions are in progress, these are detailed under <br />the heading GENERAL MINE PLAN COMPLIANCE. <br />EXCESS SPOIL and DEVELOPMENT WASTE — Rule 4.09 <br />Placement; Drainage Control; Surface Stabilization: <br />Fills 7, 8 and 9 were all stable and well vegetated, with no signs of significant erosion. A little erosion on <br />the outside of fill 8 had not been repaired. <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, 4.05.10; <br />Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; <br />Drainage — Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: <br />Pond 9b was not discharging, but was holding a little water. The water had receded to the point that the <br />riser was visible, showing a single weep -hole that was just exposed. It appeared that a great deal of sediment had <br />accumulated. The weir box will also need to be cleaned out and both silt fences below the emergency spillway <br />need to be repaired. <br />Pond 8 was holding a little water. The primary riser was completely exposed, showing 4 pairs of weep - <br />holes. The embankments and weir box were in good shape. <br />Pond 5 was holding water and would have discharged except for the fact that the primary spillway <br />appeared to be frozen. <br />Around the shrub plot there continues to be significant erosion. One particular problem appears to be the <br />result of road run -off, below a low spot (visible to the right of the rock pile in photo 15). A potential solution that <br />has been discussed would be to build that section of road up and then divert the run -off, via culverts where <br />necessary, to pond 8. <br />No work had been done around Pond 6, which was holding water and discharging by a slow drip. Three <br />Number of Partial Inspection this Fiscal Year: 5 <br />Number of Complete Inspections this Fiscal Year: 3 <br />Page 2 of 18 <br />