2014-10-22_INSPECTION - C1996083

• Permit No: C1996083
• IBM Index Class Name: Inspection
• Doc Date: 10/22/2014
• Doc Name: Inspection Report
• From: DRMS
• To: Bowie Resources LLC
• Inspection Date: 10/15/2014
• Email Name: SLB
• Email Name: DIH
• Media Type: D
• Archive: No

October 15, 2014C-1996-083/Bowie No. 2 MineSLB
prevent erosion and siltation on the undisturbed area downgradient of the Engineering Office yard, had been
overtopped in two locations. Gravel and coal fines had passed over the silt fence and into an adjacent, undisturbed
drainage, forming a triangular shaped area about 2” thick and 40’ wide, extending 40’downgradient in the
drainage.
The Division informed BRL that, while there had been no off-site discharge of water or sediment outside of the
permit area (this area drains to Pond J), thereappeared to be a violation of the approved permit application
package. The approved permit application packagedesignatesthe area outside of the yard area as undisturbed,
and BRL has installed sediment control (silt fence or straw wattle) to protect the undisturbed area from erosion and
deposition from disturbed arearunoff as a resultofa 10 yr-24 hr storm event.
On the morning of October 17, 2014, BRL informed the Division that the silt fence had been repaired; the
The
Division inspected the area and verified that the repairs had been complete and the silt fence was functional.
deposition material beyond the silt fencestillneeds to be removed; the material should be removed with
hand labor to minimize damage to topsoil resources and vegetation
.
On October 21, 2014, BRL provided data collected at its on-site raingage indicatingthat there had been rainfall in
excess ofa10 yr-24 hr precipitation event startingthe afternoon of October 1, 2014 and ending the morning of
October 2, 2014. The 10 yr-24 hr rainfall at the Bowie No. 2 Mine location is 1.8”. The recorded rainfall in the
24 hour period October 1, 2014 through October 2, 2014 was 1.99”. Since there was documented rainfall in
excess of the design event, no enforcement action was issued for the silt fence failure.
Conveyor Corridor
Ditch B37 is designed to flow south along the conveyor line between Culverts B26 and B13. Culvert B13 then
conveys the Ditch B37 flow to B Gulch. Ditch B37 was downcutting along the conveyor and the resultant gully
was flowing away from the inlet of culvert B13. The operator had cut a new ditch to carry flow from Ditch B37 to
BRL
B Gulch on the west side of the conveyor line, rather than realigning Ditch B37to Culvert B13as designed.
must either maintain Ditch B37 as designed and remove the ditch carrying flow under the conveyor line, or
submit revised designs consistent with the current on-the-ground configuration.
If BRL elects to revise the
design information, this could be accomplished through TR-91, currently under review.
BRL needs to locate this culvert and
DRMS inspectors were unable to locate Culvert B26 on the ground.
ensure that the inlet is open so that flow from Ditch B25 is diverted to B Gulch rather than compounded
into Ditch B37.
Unidentified Culverts
A culvert not identified on permit application maps was in place on the west end of Topsoil Stockpile D, along the
Gob #1 haul road, carrying drainage from Ditch F9 under the road. Ditch F16 maintenance has blocked the inlet
BRL should either
of the unidentified culvert so that flow from Ditch F9 is routed to the east in Ditch F16.
identify the culvert, provide design information, and clear the inlet of the culvert, or remove the culvert and
continue to maintain ditch F16 to carry flow from ditch F9.
If BRL elects to identify the culvert and provide
design information, this could be accomplished through TR-91, currently under review.
Number of PartialInspection this Fiscal Year: 3
Number of CompleteInspections this Fiscal Year: 2
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