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Inspection Report Narrative <br />July 21, 1998 <br />Edna Mine, C-80-001 <br />Phase I Bond Release Inspection, Moffat Pit <br />Weather: high thin overcast, warm, breezy, and dry. <br />Inspection commenced at 9:15 am in the P&M office in Oak <br />Creek. Participating in the inspection were Sandy Brown and <br />Larry Routten (Colo. DMG), Mitch Rollings and Randy Pair (OSM), <br />and Brian Gontarek (P&M); Dusty Miller (P&M) joined the end of <br />the field inspection and answered a few questions. <br />In the office, we checked drainage channel designs and map <br />certifications. DMG's copy of all of the maps and cross-sections <br />in the release application were certified (OSM's copies were <br />not). Public notifications will be checked at a later date in <br />the files in DMG's Denver office. <br />Field inspection began around 10:15 am. <br />DMG measured cross sections and grades on the constructed <br />drainage channels at several locations; DMG will compare these to <br />the designs prior to issuing a decision. The northern channel <br />(roughly in the location of the final pit) and middle channel <br />need maintenance work in few places to restore riprap moved by <br />heavy storms. <br />The southern-most channel (Downdrain #3) had been stabilized <br />only with erosion mat/blanket. In many places, water has washed <br />around and below the erosion blanket, resulting in nearly <br />vertical-walled gully sections as much as 4' deep. At least one <br />section also appeared to be at a significantly steeper grade than <br />designed. DMG issued a citation (NOV CV-98-006) for failure to <br />maintain the downdrain; the abatement measures required a <br />redesign of the downdrain, if necessary, as well as <br />reconstructing the channel. <br />Generally, the slopes of the reclaimed area appear to agree <br />with the cross-sections in the release application and to <br />reasonably agree with the approved postmining topography. <br />A series of cracks were observed running mostly parallel to <br />the contour, about 1/3 of the way down the northern most <br />downdrain. These cracks were mostly ~ inch to 3 inches in width, <br />as much as 30 feet long, and appeared to be about 2 feet deep. <br />These cracks evidently represent some differential settlement of <br />the backfill, but would not interfere with the approved <br />postmining land use. <br />Page 1 of 2 <br />