_INSPECTION - C1981041

• Permit No: C1981041
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• From: DRMS
• To: Tonya Hammond
• Inspection Date: 10/23/2013
• Email Name: MPB
• Email Name: DIH
• Media Type: D
• Archive: No

October 23,2013 C-1981-041/Roadside Portals MPB
and graded and reseeded in October 2012. The G Substation located at the North Portal consisted of.5 acres and
was backfilled and graded and seeded in September 2008.
Sedimentation Ponds 6, 10,(11 and CBA 2)and(13 and CBA 1),were reclaimed and backfilled to the approved
design configurations given in the PAP. This was completed in October 2012. Pond 8 was backfilled and
reclaimed in October 2011and Pond 9 was reclaimed in April 2013. All of these ponds and CBA sumps are being
requested for Phase I release only. Pond 7 was reclaimed and seeded in October 2011. This is the only pond that
is being requested for full Phase I,II, and III bond release. All ponds were backfilled and graded according to the
approved final configurations as detailed in the PAP. As-Built Profiles for these ponds and associated ditches are
given in Tab 7 of the bond release application.
HYDROLOGIC BALANCE -Rule 4.05
Drainage Control 4.05.1,4.05.2,4.05.3; Siltation Structures 4.05.5,4.05.6; Discharge Structures 4.05.7,4.05.10;
Diversions 4.05.4;Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13;
Drainage —Acid and Toxic Materials 4.05.8; Impoundments 4.05.6,4.05.9; Stream Buffer Zones 4.05.18:
Ground conditions were dry at the time of the inspection. All sediment ponds have been reclaimed at the Roadside
Portals Mine. There will be no permanent impoundments remaining at the site. The acreages requested for Phase
I release for Ponds 6 through 10, 11,and 13 are shown on Attachment 2. SCC is requesting that 2.6 acres at the
location of former Pond 7 be fully bond released. All of the reclaimed pond sites are stable with no signs of
erosion or other instability related issues. SCC submitted total suspended solids demonstrations for each pond site
prior to reclamation. These were approved with TR-61 and PR-5 and are contained in the PAP in Appendices 14-
12 and 14-13. Grass filter designs are presented in Appendix 14-6 demonstrating that silt fences that had once
been located at the South Fan Area,2 West Portals Area, B Substation and the North Decline Dewatering Area are
no longer required. An inclinometer was used to field check gradients at several major drainage channels.
Measurements taken were consistent with the As-Built Ditch Profiles submitted with the SL-8 application.
The CRDA-1, CRDA-2, and RSRDA waste piles were inspected. Drainage and diversion ditches were stable at
the CRDA-1 and CRDA-2 sites.The RSRDA at the South Portal area was in very good condition with no erosion
or instability noted. Terrace drains and perimeter ditches are well vegetated and functional at all three refuse pile
locations. Photograph No. 1 shows one of the upper terrace drains on CRDA-2. Some of the terrace drains have
accumulated some sediment over time but they all remain functional with adequate freeboard. No problems were
identified at any of the refuse disposal sites during this inspection.
The OSM and DRMS noted several isolated areas that will require maintenance and repair as described below.
Based on further evaluation and our forthcoming Proposed Decision and Findings of Compliance for SL-8 bond
release some of these specific locations may be excluded from full Phase II, III bond release.
North Decline- Sump and Diversion Ditch(18.2 acres)
DRMS stated in the September 2013 inspection report that SCC agreed to remove sediment and repair rip rap in
the main permanent diversion ditch that flows to the north towards the highway. Designs call for 12"rip rap in
Number of Partial Inspection this Fiscal Year: 3
Number of Complete Inspections this Fiscal Year: 2
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