_INSPECTION - C1994082 ‎(7)‎

• Permit No: C1994082
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• From: DRMS
• To: Seneca Coal Company
• Inspection Date: 5/17/2011
• Email Name: SLB
• Email Name: SB1
• Media Type: D
• Archive: No

May 17,2011 C-1994-0821Yoast Mine SLB
was also a large gully on the north side of the same topsoil stockpile that was in need of repair.
YPM-8 and YPM-1 I were in excellent condition. YPM-5-1 was observed from the hill above the Pond 013 slide.
It appeared that heavy flows had gone through the drainage and maintenance might be warranted. No flow had
breached the channel,but it looked like downcutting had occurred.
ROADS—Rule 4.03
Construction 4.03.1(3)14.03.2(3)
❑Drainage 4.03.1(4)14.03.2(4)
-J Surfacing and Maintenance4.03.1(5)and(6)14.03.2(5)and(6)
-iReclamation 4.03.1(7)14.03.2(7):
The road surface of Haul Roads A and B was dry and in good condition. Postmining drainage channels along the
east side of Haul Road B were in good condition and functioning as designed.
Light Use Road LU-2,which runs up into the North Pit,needed to be regraded where a gully had formed
down the road centerline near Culvert YB-6.
The two culverts at Culvert YA-6 that convey Scotchman's Gulch under Haul Road A were both flowing. The
outlet end of the culvert was downcutting at the culvert area and extending beyond the permit boundary. The
downcutting was approximately 6' deep,and extended outward approximately 3' on each side of the culverts.
Material has eroded beneath the culverts as well, resulting in road fill material being washed into Scotchman's
Gulch. NOV CV2011-002,was issued for failure to ensure that"construction,maintenance, and post-mining
conditions of haul roads into and across the site of operations will control or prevent erosion and siltation,
pollution of air or water,and damage to public or private property", as required by Rule 4.03.1(1)(a),and failure to
ensure that haul roads do not cause"additional contributions of suspended solids to streamflow or to runoff
outside the permit area"as required by Rule 4.03.1(1)(b). The operator will need to regrade the area and
install rip rap at the outlet of both culverts,as specified in the Notice of Violation.
Culvert YB-3 was in need of maintenance at the outlet side,where it was partially clogged. The outlet of
Culvert YA-4A needed to be cleaned,and the rip rap at YA-3 needed to be enhanced.
RE VEGETATION—Rule 4.15
Vegetative Cover; Timing:
The soils were saturated,the temperature was unusually cool and large patches of snow were still present which is
unusual for this time of year making the vegetation late sprouting. The early season forb species were just starting
to flower. Some perennial grasses and fortis were starting to sprout and the shrubs were at bud-break. Some of
the species seen sprouting in the reclaimed areas were Western blue flax,alfalfa,western spring beauty,prairie
onion and chokecherry. Within the enclosures golden current,western serviceberry,narrow leaf cottonwood and
coyote willow were breaking buds. A small patch of daimation toadflax was getting established on the north
side of Pond 11. This should be sprayed this season.
SLIDES and DAMAGE -Rule 4.12:
Number of Partial Inspection this Fiscal Year: 9
Number of Complete Inspections this Fiscal Year: 3
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