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October 6, 2010 C-1992-080/Carbon Junction Mine TAK <br />all disturbed areas. <br />AVAILABILITY OF RECORDS - Rule 5.02.4(1): <br />All required records were on file at the office of Goff Engineering (see attached list). <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 />Backfilling, grading, topsoil replacement, and revegetation appeared to have been completed in all areas within the <br />permit area except boreholes 17-1, 94-1, and 95-1. (Two low areas where collection ditches have been regraded in <br />the area of the gravel pit/coal permit boundary are being researched). Topsoil stockpiles 4 and 7 were approved as <br />permanent features in June 2010 (TR-16) based on their compatibility with the surrounding topography and <br />previous achievement of the required minimum replacement thickness of one foot of topsoil on reclaimed areas. <br />The crack in the northeastern half of the reclaimed North Pit (previously described in the June and September, <br />2010 inspection reports) appears to have partially filled with sediment. No changes were found in the bulge on the <br />west side of the Permanently Reclaimed Spoil area, compared to the September DRMS inspection report. <br />HYDROLOGIC BALANCE - Rule 4.0511?Drainage 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 Materials 4.05.8; <br />Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: <br />Pond 1 (large pond, outfall 001). The two sediment control ponds were approved for removal in Technical <br />Revision 15 (approved in January 2008) and MR-6 (vegetation cover data, approved August 11, 2008). Pond 1 <br />(the large pond) was regraded in early 2009 and backfilled with all of the material from stockpile #8. Regrading <br />resulted in a flat surface that blends well with the adjoining flat, tilled farmland just outside the permit area to the <br />south. Ditches that fed Pond 1 have also been regraded. Runoff from this large flat area would make its way to <br />natural drainages on either side of Ewing Mesa, in the same way that runoff from the farmland would naturally <br />drain. <br />Pond 2 (small pond, outfall 002 ). Pond 2 also was regraded in early 2009, with the earthen embankment <br />removed, leaving a flat-bottomed drainage that reports a short-distance to the lower part of Carbon Junction <br />Canyon. Runoff from the west half of the PRSA will continue to flow through this drainage to Carbon Junction <br />Channel, via a culvert underneath the permanent asphalt-surfaced haul road. <br />Carbon Junction channel. The reconstructed section of the Carbon Junction channel was in good shape, with the <br />exception of the hole at the upstream end of the riprapped segment of the channel. The hole is about 10 feet deep <br />and 6 feet in diameter. The hole appeared the same as previously described in the September 2010 DRMS <br />inspection report. No flow appears to have occurred in the channel since the September inspection. The channel <br />Number of Partial Inspection this Fiscal Year: 2 <br />Number of Complete Inspections this Fiscal Year: 2 <br />Page 3 of 9