_INSPECTION - C1981017 ‎(3)‎

• Permit No: C1981017
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• From: DRMS
• To: Revoked
• Inspection Date: 9/12/2012
• Email Name: SB1
• Media Type: D
• Archive: No

September 12, 2012 C-1981-017/Coal Basin Mines BFB
ROADS —Rule 4.03
Construction 4.03.l(3)/4.03.2(3)
Drainage 4.03.1(4)/4.03.2(4)
Surfacing and Maintenance4.03.1(5) and(6)/4.03.2(5) and (6)
Reclamation 4.03.l(7)/4.03.2(7):
Road A was passable by vehicles. This private road which supports a public right-of-way, continues to be erosive
at each of the culverts which drain the road surface. Runoff which reports to the road culverts spills onto the
unconsolidated outslope fill, causing gully development and sediment generation. The cut slope side ditch which
channels water to the culverts is poorly maintained, and in places allows water to flow down the road surface.
Public access beyond the gate near the Lamphouse (end of Road A) is restricted to non-motorized means. Road B
parallels Dutch Creek and splits into Road C (to Mine 4) and Road D to (Mines 1 and 2). Road B was passable by
ATV to the Road C intersection. The Road C crossing on South Dutch Creek was very rocky with a steep rocky
incline and desent to the creek(photo 5). Road C above Dutch Creek was in good shape. A few gullies have
formed across the reclaimed road near the Mine 4 portal area but the road remains passable.
A section of Road D became saturated and slid during the winter/spring of 2010/2011. The slide mass appears
to have acted similarly to a debris flow,having come to rest on Road B at the location of the proposed Forest
Service work. The slide body appears to have been composed of Mancos Shale derived colluvium, with no
evidence of coal or coal refuse being observed in the remnant material. After the slide body came to rest on Road
B, it deflated, allowing the entrained water to flow toward Dutch Creek. The Division remediated the head cut and
toe of the slide in 2011. The nearly vertical head cut was excavated to relax the slope angle,and to reduce
surcharge at this area. Near the toe of the slide,the channel created as a result of water exiting the colluvial debris
was widened,with broad meanders being constructed, in order that the velocity of future flows, if any,will be
significantly reduced in order to create a more non-erosive landform. Both areas were revegetated following
construction.
The large gully located at the avalanche chute on Road D between Mines 1 and 2 continues to impede upon the
reclaimed road trace. Road D was still passable at the time of this inspection.
Road E leads to the intersection of Roads F and G(Mines 3 and 5 access routes). Road E crosses the North Fork
of Dutch Creek just north of the Lamphouse. The Road E crossing on Dutch Creek is rocky with a steep, rocky
incline on the east side. Road F heads west from Road E to Mine 43,but is blocked by a landslide just west of the
intersection with Road E. Road F and Mine 3 were not evaluated during this inspection. Road G was in good
shape from Road E to Oil Well Creek where the crossing was washed out. Road G was not inspected beyond Oil
Well Creek.
REVEGETATION—Rule 4.15
Vegetative Cover; Timing:
The Sutey Pile is well vegetated with some scattered shrubs and trees. The grasses and forbs have been heavily
grazed, as has been well documented by the Division for well over ten years. The over grazing of almost all
reclaimed facilities in Coal Basin has severely inhibited long term revegetation potential.
Number of Partial Inspection this Fiscal Year: 1
Number of Complete Inspections this Fiscal Year: 1
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