INSPEC14601

• Permit No: C1981041
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• Inspection Date: 9/9/2002
• 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.
North Decline Area
~ There was a shallow pool of runoff water in the area of old settling at the Tower end of the channel.
Pond 7 and the SAE sediment traps were dry. Minewa[er Dischazge Site 016 was discharging clear
flow, approximately 200 gpm.
Unit Train Loadout
~ Sediment Pond 1-2 and the evaporative treatment cells contained shallow puddles of water. Culverts
and ditches appeared to be adequately maintained and functional.
Backfilline and Gradine
/ A[ the reclaimed CBA-2 soil borrow area, shallow rill erosion had developed in three separate slope
locations, associated with storm runoff from small ephemeral drainages or old two-track roads. One
tilled location is at the upper (west) end of the excavation, and two locations are along the northwest
in-slope. Operator will need to implement appropriate measures to stabilize these locations and
prevent the development of excessive erosion.
1 Final location and design for the Coal Gulch channel in the CBA-2 borrow azea, to be implemented
upon sediment pond removal, has not ye[ been addressed. The fmal reclamation plan will need to be
approved prior to Phase l bond release for the borrow area.
Certain grading and drainage modifications are also warranted at the RSRDA soil borrow area. These
concerns are addressed within NOV CV-2002-019, and previously in this report.
Regrading and topsoiling has been completed at the North Portal Facilities Area. Soils were initially
ripped to alleviate compaction. Additional scarification will be undertaken in association with
permanent revegetation later this fall. Some rill erosion has developed on the steep slopes in the
northeast comer of the reclaimed area, and extensive surface roughening will be required here, as well
as other steep slope areas to be broadcast seeded.
/ The operator has not yet provided certified as-built topographic mapping for the North Portal
reclamation azea. Two cross-sections were run from north to south across the eastern portion of the
regraded azea using abney level, stakes, and pacing, to estimate approximate slope gradients (in
addition to the channel profile measurements previously described).
The fast line was in the approximate location of Section B -B, depicted on map Exhibit SC. Gradient
of the upper slope segment, approximately 170 feet in length, was approximately 19%. Lower slope
segment approximately 300 feet in length, was approximately 5%. By comparison, Exhibit 8C upper
slope is approximately 12%, 200 feet in length, with lower slope approximately 4.5%, 220 in length.
A second transect was run further to the east, starting point approximately 50 feet west of the inlet to
the diversion culvert at the end of the upper diversion ditch. Gradient of the upper slope segment here
was approximately 22%, 135 in length, and the gradient of the upper slope appeared to be somewhat