INSPEC43024

• Permit No: C1982057
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• Inspection Date: 3/19/2003
• Media Type: D
• Archive: No

III. COMMENTS -COMPLIANCE
Below are comments on the inspection. The comments include discussion of observations made
during the inspection. Comments also describe any enforcement actions taken during the inspection
and the facts or evidence supporting the enforcement action.
the pond embankment outslope. At the time of the inspection, there was no longer flow in
the ditch.
Regulation sections cited were 4.03.111)(a) [general haul road requirements], 4.03.1(4)
[haul road drainage design, construction and maintenance], 4.03.1(4)(a)(iv) [construct haul
roads not within disturbed area to minimize erosion, resultant siltation, and disturbance to
hydrological balance], and 4.03.1(6)(al [maintain haul roads to meet approved or required
design standards throughout the life of the facility].
Permit Sections cited were Exhibits 13-2 and 13-10. Exhibit 13-2 is titled Surface
Hydrology Map, certification date of Dec. 7, 1998. The map depicts Ditch HRD-A2-ME 5
running from the road curves above Pond 006 along the inside of the road past the pond
embankment and continuing on down the road. Exhibit 13-10 is titled Typical Road Detai/s,
certification date of Nov. 5, 1990. The exhibit specifies that roadside ditches would be
constructed as "V" ditches with 2:1 side slopes. Permit Table 13-3 indicates that the
specific design applicable to "V" ditches along the Mine Entrance Road and Haul Road A is
the typical design on Ex. 13-10 labeled Typical Berm Ditch "B", which is a 1' deep ditch to
the inside of a safety berm at least 2 feet high.
Digital Photos 431 through 434 are of the road ditch segment, embankment erosion, and
sediment deposition area on x&716/03.
~~ 4
By the afternoon of April 17, 2003, the segment of ditch where the breach occurred had
been effectively repaired, such that the remedial abatement Item 1 was satisfactorily
abated. Photos 461 through 463 are of the same area on the afternoon of~@J77/03,
following ditch repairs. yrp ~
NOV CV-2003-003
NOV CV-2003-003 was issued April 17, 2003, based on observations made during field
inspection on April 16, 2003. The NOV was issued for [flailure to p/ace or grade backfilled
material to minimize erosion and off-site effects, and failure to design, construct, or
maintain disturbed area road ditches and road ditch relief down-drains to safely pass runoff
and minimize, contro% or prevent erosion.
The NOV applied to Hau/ Road G road ditches and ditch relief out/et drains on both sides of
the road, from lower end of the D Pit rough graded spoils down to and including the
riprapped ditch relief outlet drain below the outlet of the 36" CMP that conveys flow from
NE side to SW side of road, upstream from Pond 005. Drainage from large area of graded
spoil flowed down the NE road ditch rather than into a natural drainage as shown on Exhibit
20-2. This additional flow may have caused or exacerbated ditch and relief drain erosion.
There were two abatement items to be implemented by May 30, 2003. Item 1: Regrade
lower D Pit spoi/s io establish design drainage into natural channel and away from Rnad G
NE Ditch. Item 2: Regrade eroded Road G ditches and ditch relief down drain segments to