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INSPEC41598
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INSPEC41598
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Last modified
8/24/2016 9:45:26 PM
Creation date
11/18/2007 11:21:59 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980005
IBM Index Class Name
Inspection
Doc Name
Inspection Report
Inspection Date
8/7/2006
Media Type
D
Archive
No
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~ay e <br />III, COMMENTS -COMPLIANCE <br /> <br />Below are comments on the inspection. The comments include discussion of observations made <br />during the inspection. Comments also describe any enforcement actions taken during the inspection <br />and the facts or evidence supporting the enforcement action. <br />during this and previous inspections, the reclaimed areas have been restored to the approximate <br />original contour of the pre-mining landscape. The present surface configuration achieved by <br />backfill and grading of the mined areas closely resembles the general surface configuration of the <br />land prior to mining. Reclaimed areas blend in well with existing undisturbed landscape. <br />Comparison of the post-mine contour map (Exhibit 12-9) with USGS 7.5 minute Quadrangle <br />Maps of Mount Hams and Milner, Colorado indicate that the major pre-mining drainages were <br />reconstructed in the appropriate locations and additional drainage density was added to the post- <br />mining landscape by constructing additional post-mine channels. <br />Prior to this inspection the 2006 Rill and Gully Survey was reviewed and all azeas identified on <br />the survey were inspected in June (see inspection report date 06/27/06). One feature is identified <br />as a sump neaz the top of the former Wolf Creek Pit. This appeazs to be a blast hole that did not <br />get properly backfilled. It is located along the fence line due south of PM-6B. It is about 18 <br />inches wide and appeazs to be approximately 20 feet deep. As discussed with SCC, this will be <br />repaired by backfilling. One other location is the slide area south of the PECOCO Pond. A seep <br />is evident in the same general vicinity of the slide and these features aze likely associated with the <br />location of the former highwall. Groundwater dischazge from the highwall may have caused the <br />slide. As shown in Photogaph No. 6 there is some exposed soil and vertical relief in the slide <br />area. There is an older slump above the location of the recent slide that appeazs to be stabilizing. <br />An approximate slope of 34% was measured perpendicular to the slide from the base of the slope <br />up to the older slump azea. We discussed options with SCC for stabilizing and/or monitoring the <br />slide. SCC should propose a plan for repairing the slide damaged azea. Both the sump blast hole <br />and the slide azea near the PECOCO Pond are considered maintenance items that will need to be <br />repaired. Neither of these features will be excluded from Phase I bond release but they will <br />continue to be monitored and repairs made as needed. <br />One significant area of concern was identified and this will be referred to as the East Wadge Pit <br />area. The East Wadge Pit was one of the last azeas to be reclaimed at Seneca II Mine. It includes <br />all disturbed ground east of Road C above and below the location of the fenced shrub plot and <br />surrounding shrub plot study area down to and including Post-Mine Channels PM-8a, PM-8b, <br />and PM-8. A diversion ditch was installed as an alternative sediment control feature above the <br />shrub study azea to protect the azea from erosion and to divert water towazds Post-Mine Channel <br />PM-8. The inspection of this area began above the diversion and proceeded down PM-8 to the <br />South Road and then back up PM-Sa and PM-8b. The following problems were noted with <br />regazd to surface water runoff and sediment control and overall stability of the East Wadge Pit. <br />A lazge gully has formed above the diversion, approximately 30 feet long and 2.5 feet deep. Rills <br />aze present above and to the east of diversion. Another significant gully has formed from the <br />
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