2014-08-19_PERMIT FILE - C1980007 ‎(12)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 8/19/2014
• Doc Name: Refuse Pile Expansion East
• Section_Exhibit Name: Exhibit 82 Refuse Pile Expansion East
• Media Type: D
• Archive: No

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P:\Mpls\06 CO\26\06261003 MCC Refuse Pile Site Review & Permlt\WorkFiles\Permit Application\2014 Revision\Exhibit 82 2014-05-29.docx
3.2.2 Modeling Results.........................................................................................................
18
3.3
Ponds, Impoundments, Other Treatment Facilities and Diversions..........................................18
3.3.1 Design Inputs and Assumptions...................................................................................
18
3.3.2 Hydrologic and Hydraulic Design Assessment...........................................................18
4.0 RPEE Waste Rock Pile Permit Design.................................................................................................19
4.1
Stripping....................................................................................................................................19
4.2
Buttress.....................................................................................................................................19
4.3
Underdrain................................................................................................................................
20
4.4
Waste Rock Pile Drainage........................................................................................................
22
4.5
Compaction...............................................................................................................................22
4.6
Cover.........................................................................................................................................22
4.7
Haul Roads................................................................................................................................23
4.7.1 Haul Road Horizontal and Vertical Alignment............................................................
23
4.7.2 Slope Stability..............................................................................................................
23
4.7.3 Haul Road Surfacing....................................................................................................
24
4.7.4 Other Design Considerations.......................................................................................
24
4.8
Construction Inspection............................................................................................................
25
4.8.1 Buttress and Underdrain Construction Inspection.......................................................
25
4.8.2 Routine Quarterly RPEE Waste Rock Pile Inspections ...............................................
26
5.0 Wetland Delineation.............................................................................................................................27
6.0 Threatened and Endangered Species....................................................................................................
28
6.1
Methods....................................................................................................................................
28
6.1.1 Plants............................................................................................................................29
6.1.2 Wildlife........................................................................................................................
31
6.2
Results and Discussion.............................................................................................................
32
6.2.1 Plants............................................................................................................................32
6.2.2 Wildlife........................................................................................................................
32
7.0 Operating Plan......................................................................................................................................35
7.1
Operating Plan — Permit Area...................................................................................................
35
7.2
Drainage Plan............................................................................................................................
35
7.3
Monitoring Plan........................................................................................................................
35
7.4
Vegetative Soil..........................................................................................................................36
8.0 Reclamation Plan..................................................................................................................................37
8.1
Reclamation Plan Components.................................................................................................
37
8.1.1 Vegetative Soil Redistribution.....................................................................................
37
8.1.2 Revegetation................................................................................................................
37
8.1.3 Road Removal..............................................................................................................
37
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P:\Mpls\06 CO\26\06261003 MCC Refuse Pile Site Review & Permlt\WorkFiles\Permit Application\2014 Revision\Exhibit 82 2014-05-29.docx