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February 16, 2010 C-1992-080/Carbon Junction Mine TK <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. Topsoil stockpiles 4 and 7 were approved as permanent <br />features in June 2010 (TR-16) based on their compatibility with the surrounding topography and previous <br />achievement of the required minimum replacement thickness of one foot of topsoil on reclaimed areas. <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, <br />4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring <br />4.05.13; Drainage - Acid and Toxic Materials 4.05.8; 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. <br />Reclaimed western collection ditch. Snow cover prevented inspection of the inlet area of the set of three culverts <br />where a small pool of water was found during previous complete inspections. Pooling in this area has since been <br />determined to not be large enough to be of concern. The ditch. was backfilled and regraded in early 2009 after <br />DRMS included this ditch in a list of areas remaining to be reclaimed, as shown on page 5 of the inspection report <br />from the SL-4 bond release inspection of October 29, 2008. <br />Sediment control. The vegetative cover established on the disturbed areas of the Carbon Junction Mine appears <br />Number of Partial Inspection this Fiscal Year: 5 <br />Number of Complete Inspections this Fiscal Year: 3 <br />Page 3 of 8