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2018-01-31_PERMIT FILE - C2009087A (10)
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2018-01-31_PERMIT FILE - C2009087A (10)
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Last modified
12/3/2019 7:43:48 AM
Creation date
3/9/2018 8:56:35 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C2009087A
IBM Index Class Name
Permit File
Doc Date
1/31/2018
Doc Name
Permit Area
Section_Exhibit Name
2.05.3 Operation Plan - Permit Area
Media Type
D
Archive
Yes
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structures and safety features will be inspected on a periodic basis, with any necessary repairs to be <br />completed in a timely manner. Normal road maintenance will involve periodic grading, watering or <br />application of surfactants to control dust, placement of additional surfacing material, clean -out of <br />road ditches and culverts, and repair of any significant erosion or damage. <br />When a road is no longer needed to support ongoing or future mining and related operations, the <br />road will be removed and the associated disturbance area reclaimed unless approved as a permanent <br />postmining road. For those roads to be removed and reclaimed, road surfacing materials and <br />culverts will be removed and the road and associated drainage features will be reclaimed by ripping, <br />scarifying and grading road surfaces, fills, and ditches to blend with the surrounding terrain and <br />reestablish effective drainage. Available stockpiled soil materials (or available suitable plant - <br />growth media if historic roads are located where soil was not salvaged) will then be replaced and <br />reseeded with the appropriate revegetation seed mix. <br />Drainage and Sediment Control Network - General drainage and sediment control plans, <br />including descriptions, maps, and cross - sections, as appropriate, are presented in the following <br />sections. As appropriate and where required, design information has been certified. Analysis of <br />potential subsidence effects is not required since all designed structures are located outside of <br />potential subsidence areas. <br />Detailed design plans including any required geotechnical investigations, descriptions of operating <br />and maintenance requirements and removal /reclamation requirements are described or referenced in <br />the following sections. These plans are designed in accordance with the provisions of Rule 4.05. <br />Specific design requirements for sedimentation ponds and temporary and permanent impoundments <br />are addressed by discussion or reference in the following sections. No need for any stream <br />diversions is anticipated at this time. A 100 -foot stream buffer zone, consistent with applicable <br />provisions of Rule 4.05.18, will be established along Little Grassy Creek, identified with <br />appropriate signage, and maintained to prevent disturbance to the stream and associated vegetation <br />communities. The stream buffer zone markers will be placed and maintained in accordance with <br />applicable provisions of Rules 4.02.4 and 4.02.5. A short section of Road B running adjacent to <br />Little Grassy Creek falls within the 100 -foot stream buffer zone. This section of road was <br />constructed prior to the implementation of stream buffer rules and was part of the old Seneca I1 <br />Mine. <br />The drainage and sediment control system for the PSCM is shown on Map 2.05.3 M4, Drainage <br />and Sediment Control Plan. There are four existing ponds, the PECOCO Pond, and Sediment <br />Ponds 002, 003, and 004. These ponds are currently approved structures that were originally used <br />to support mine activities at the closed Seneca II Mine. Ponds 002, 003 and PECOCO Pond are <br />within the PSCM disturbance area; however, runoff to PECOCO Pond is from Seneca 1I Mine areas <br />that have been successfully reclaimed and revegetated — most of the drainage area has been <br />approved for Phase I and Phase 11 Bond Release. The watershed for Pond 004 will not be disturbed <br />by any PSCM surface operations during the 5 -year permit term. Pond 002 will treat runoff from a <br />portion of the reclaimed and revegetated Seneca II Mine, as well as the South Surface Facilities and <br />Portal Area. Pond 003 will treat runoff from the North Facilities Area. <br />Runoff from the reclaimed and well established revegetated Seneca I1 Mine areas in the Pond 002 <br />watershed is intercepted by a series of approved postmining channel networks. The PM -4/PM- <br />6/PM-9 channel system collects runoff from approximately 900 acres; the runoff is routed to <br />PECOCO Pond. Channel PM- 2/PM -23 collect runoff from a 150 acre watershed and convey the <br />TR -0,' 2.05 -27 Revision 4/12 <br />
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