2017-10-12_INSPECTION - C1981038

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September 21, 2017 C-1981-038/Bowie No. 1 Mine CCW Number of Partial Inspection this Fiscal Year: 4 Number of Complete Inspections this Fiscal Year: 1 Page 3 of 9 Drainage – Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4 .05.9; Stream Buffer Zones 4.05.18: There are ten ponds at the Bowie No. 1 Mine, six of which have been reclaimed to request Phase I release. The information below was included in the SL-6 Bond Release Inspection Report: - Gob Pile Pond: (Photos 1 and 2) The Gob Pile Pond was inspected for backfilling, regrading and drainage control. The pond was returned closely to the designs outlined in the C-1981-038 Permit Application. The contours blend well with the surrounding reclaimed areas. There had been a large precipitation event some time prior to the inspection and there was no evidence of low spots that had ponded water in the freshly reclaimed area. No erosional features were identified and the area was stable. The site had not yet been reseeded , but is scheduled to be in the early fall of 2017. Silt fencing has been placed at the lowermost contours to prevent sediment from leaving the site. The Gob Pile Pond impounded and treated runoff from the gob pile. The silt fencing was in good repair; however, the sediment logs down gradient of the fencing were being undercut, and it appeared that this problem contributed to sediment loading to the area below the pond. Please repair this area to prevent further erosion of the discharge outlet . The drainage that fed into the pond was re-routed above the reclaimed pond to feed directly back into the natural drainage. The new diversion was a riprap lined channel. There were no observed points in the channel where water had breached the channel or any ot her erosional features. - Binwall Pond #1 (Photo 3) Binwall pond #1 was inspected for the completion of backfilling, regrading and drainage control. The binwall embankment of the pond had been removed and the slopes were blended into the surrounding hill sides. The drainage is designed to flow through what was the bottom of the pond. The bottom of the pond was graded with a slope to resemble the natural drainage. There was evidence of a recent flow through the new channel. There was no indication of erosion or ponding. There was a short portion of an access road that was on the west side of the embankment. This portion of the road was reclaimed. The site will be reseeded in the early fall of 2017. - Binwall Pond #2 Binwall Pond #2 was reclaimed in the late summer of 2017. Reclamation activities included backfilling, grading and drainage control. The site was inspected for these Phase I criteria. The binwall had been removed and the embankments had been regraded to match the contours of the existing hillsides. The bottom of the pond was graded to resemble the natural drainage. Evidence of recent runoff indicates that the new channel was working and conveying runoff. It was noted that there were minor rills forming on the reclaimed w est hillside. The site is scheduled to be reseeded in the early fall of 2017. - Binwall Pond #3 Binwall Pond #3 was reclaimed in the late summer of 2017. Reclamation activities completed at the site included backfilling, regrading and drainage co ntrol. The binwall was removed and the embankments were blended into the surrounding hillsides. The bottom of the pond was returned to a configuration similar to the natural drainage. Evidence on the site suggests that a decent amount of water had recent ly flown through the site. The channel fared well and remained stable. The eastern regraded hill had a few minor rills formed on it. The site is scheduled to be reseeded in the early fall of 2017.