INSPEC41598

• Permit No: C1980005
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• Inspection Date: 8/7/2006
• Media Type: D
• Archive: No

III. COMMENTS -COMPLIANCE
~.~ e 6
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.
Hydrologic Balance
Sedimentation Ponds 002, 003, 004, 008, the PECOCO Pond, the Truck Wash Ponds, and Spilt
Control Pond #2 aze routinely inspected at least every quarter during complete inspections. The
pond inlets, discharge structures and embankments aze stable at all pond locations. Pond side
slopes and surrounding areas aze vegetated and stabilized. SCC has submitted permanent
impoundment demonstrations for all ponds except the Truck Wash Ponds and Spill Control Pond
which will be reclaimed when the shop and facilities azeas aze reclaimed. During a complete
inspection in Mazch 2005, the DRMS noted that a qualified registered professional engineer had
not certified the As-Built Reports for Ponds 002,003, and 004 (please see inspection report issued
03/22/05). Further, Ponds 004 and 008 have recently undergone spillway redesign and
construction requiring new As-Built Certifications. With TR-37, SCC submitted As-Built
Certifications for all ponds requested to be left permanent including 002, 003, 004, 008, and
PECOCO Pond. The permanent impoundment demonstrations along with As-Built
Certifications for all requested permanent ponds aze pending approval with TR-37. SCC has
submitted letters from all appropriate landowners requesting that the corresponding ponds be left
in place as permanent features.
In February 2002 SCC submitted Technical Revision No. 35 to request approval for 12 stock
ponds to be retained as permanent structures and also to request a waiver from the quarterly
examination requirements for these ponds [Rule 4.05.9(18)]. In June 2003 all stock ponds were
inspected to verify the adequacy of the safety demonstration required by 4.05.9(18) and to verify
embankment heights and storage capacities (see inspection report dated 06/17/03). All stock
ponds aze constructed in reclaimed areas and aze not primary sediment control structures. All
have a capacity no greater than two-acre feet and embanlnnent height no greater than five feet as
measured from the invert of the spillway to the upstream toe of the embankment. The revision
was approved in August 2003 and the following stock ponds will remain as permanent features:
T-4, T-8, T-16, T-17, T-20, T-26, T-28, T- 29, T 30, T 31, T-32, and T-33. Stock pond inlets,
embanlanents, and spillway structures are stable. All side slopes and surrounding azeas are stable
and well vegetated. The stock ponds provide water for livestock and wildlife. SCC has
submitted letters from all appropriate landowners requesting that the stock ponds located within
their properly boundaries be left in place as permanent features.
All permanent post-mine drainage channels were inspected as part of this Phase I bond release to
assess general design compliance. Certified designs were approved for all post-mine drainage
channels prior to this inspection. Channel PM-1 was redesigned with TR-37 to provide a more
stable structure and to provide adequate capacity to safely convey the peak discharge from the
100-year, 24-hour storm event in accordance with Rule 4.05.4. Since this is a permanent