_INSPECTION - C1981015 ‎(8)‎

• Permit No: C1981015
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 10/7/2008
• Email Name: DTM
• 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.
This was a complete quarterly inspection of the reclaimed Fruita mine permit revocation site,
conducted by Dan Mathews of the DBMS Grand Junction Field Office, accompanied by Steve Renner
and Erica Crosby of the Division's Inactive Mine Program (IMP). IMP will be developing a plan for
maintenance/erosion repair work and bid document preparation, for site work that is now anticipated to
be conducted in early 2009. Weather was clear and mild, surface soils were moist from rains over the
past weekend. The sediment pond contained no water; pond bottom was dry. Site conditions were
essentially unchanged from those described in the September 2008 inspection.
Signs and Markers
The DMG revoked permit I.D. sign is still present on the old gate at the site entrance. The condition is
unchanged from previous inspections; damaged by bullet holes but Division phone number remains
legible.
Hydrologic Balance and Backfill & Grading
Sediment pond and associated spillway structure were as described in reports dating back to
November 2006. The pond bottom was moist, but due to the deteriorated condition of the primary
spillway at the joint of the vertical (riser) and horizontal CMP sections of the structure, the pond does
not retain water. Preliminary remedial plan is to cut out the riser section of the primary spillway
structure and plug the section of CMP that runs through the pond embankment, to prevent further
discharge through the spillway pipe. Elevation of the existing open channel emergency spillway will
be lowered, to provide for a stable open channel spillway, which would serve as the sole spillway for
the pond.
Erosional features at the site have not changed appreciably in recent months; they are essentially as
described in the November 2006 through September 2008 inspection reports. Erosional features that
may warrant remedial measures to ensure that reclaimed slopes and drainage channels are not
compromised include gully headcut and incision immediately downstream of the toe of the riprap on
the permanent channel on the steep Mine 1 bench fill outslope, a gully headcut and short gully
segment extending up from the toe of the Mine 1 bench fill outslope, along the east side of the fill (east
of the riprap channel), a small diameter hole (apparently a piping erosional feature) located on the
crest of the Mine 1 portal backfill at the base of the sandstone outcrop above the sealed portals, a
gully headcut and incision on the Mine 1 portal backfill slope and along upper segment of the
permanent channel on the relatively flat top of the Mine 1 bench, a location where riprap was
dislodged from the permanent channel near the center section of the steep riprap segment, and rill
erosion along the lower-most segment of the reclaimed access roadbed.
A total of$50,000.00 has been granted to DRMS by OSM, from the OSM pool of civil penalty monies.
The total amount was received in two separate award increments. The $50,000.00 in funding from
OSM, plus remaining bond monies ($2794.00) will be used to implement pond embankment/spillway
modifications, erosion repairs, riprap installation and other measures to prevent pond embankment
failure and to stabilize drainage features and portal backfill locations that are threatened by existing
and potential future erosion. It is anticipated that the work will be performed in early 2009.
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