2013-09-27_REVISION - M1979094HR ‎(3)‎

• Permit No: M1979094HR
• IBM Index Class Name: Revision
• Doc Date: 9/27/2013
• Doc Name: AM01 Drainage Design
• From: Cotter Corp
• To: DRMS
• Type & Sequence: AM1
• Email Name: DMC
• Email Name: TC1
• Media Type: D
• Archive: No

JD -7 Mine - Drainage Design Plan iv
Figure 14.
Channel Profiles Measured in Pit Diversion West ....................................... ...............................
32
Figure 15.
Photograph of Pit Diversion West Profile PDW- 2 ....................................... ...............................
33
Figure 16.
Photographs of OPWRD Diversion and Tributary Reach NECh 1 ............... ...............................
34
Figure 17.
Photograph of Stormwater Retention Pond 001B -A South ......................... ...............................
36
Figure 18.
Non - Contact Stormwater Routing (Current Condition) ............................... ...............................
38
Figure 19.
Schematic of Stormwater Routing for the Open Pit Waste Rock Pile Diversion Structure
( OPWRD) at the JD -7 Mine ......................................................................... ...............................
39
Figure 20.
Schematic of Stormwater Routing for Non - Contact Sub -basin Reporting to the Valley Floor and
PitDiversion East ......................................................................................... ...............................
39
Figure 21.
Schematic of Stormwater Routing for North Portion of Site ....................... ...............................
40
Figure 22.
Schematic of Stormwater Routing for North Portion of Site and Mine Yard Area ....................
40
Figure 23.
Downstream Hydrograph for the Pit Diversion East (PDE) Diversion Structure .......................
44
Figure 24.
Downstream Hydrograph for the Pit Diversion West (PDW) Diversion Structure ....................
45
Figure 25.
Downstream Hydrograph for the Open Pit Waste Rock Pile Diversion Structure Segment 1
(WR_Div 1) ................................................................................................... ...............................
45
Figure 26.
Downstream Hydrograph for the Open Pit Waste Rock Pile Diversion Structure Segment 2
( WR_ Div2) ................................................................................................... ...............................
46
Figure 27.
Trapezoidal Channel Geometry showing Freeboard .................................... ...............................
48
Figure 28.
Hydrographs for Catchment 001B -A South ................................................. ...............................
51
Figure 29.
Hydrographs for Catchment 001B -A North ................................................. ...............................
52
Figure 30.
Hydrographs for the Mine Yard Area .......................................................... ...............................
53
Figure 31.
Conceptual Layout for Expanded Catchment 001 B -A North ...................... ...............................
54
Figure 32.
Hydrographs for Expanded Catchment 001B -A North ................................ ...............................
55
Figure 33.
Minor Sub - Basins and Stormwater Routing within Major Sub -Basin B -3 (Planned Condition)
58
Figure 34.
Site Map Showing Sub - Basins and Stormwater Routing in Mine Facilities Area (Planned
Condition) .................................................................................................... ...............................
59
Figure 35.
Photographs of Natural Drop Structures on Monogram Mesa Escarpment . ...............................
64
Figure 36.
Stage- Storage Curve for Planned SCN ........................................................ ...............................
67
Figure 37.
Aerial Photograph Showing Existing Upstream Storage Pond at the toe of the Existing OPWRP68
Figure 38.
Schematic of Stormwater Routing for the Planned Open Pit Waste Rock Pile Diversion
Structure( OPWRDP) Planned ..................................................................... ...............................
70
Figure 39.
Schematic of Stormwater Routing for the Planned Pit Diversion East Structure (PDEP) ..........
70
Figure 40.
Schematic of Stormwater Routing for the OPWRDP and NDP Diversion Structures and SCN
Pond.............................................................................................................. ...............................
71
Figure 41.
Downstream Hydrograph for the Planned Pit Diversion East (PDEP) Diversion Structure.......
73
Figure 42.
Downstream Hydrograph for the Planned Pit Diversion West (PDWP) Diversion Structure ....
74
Figure 43.
Downstream Hydrograph for the Planned Open Pit Waste Rock Pile Diversion Structure
Segment1 WR DivP 1 .................................................................. ...............................
74
Figure 44.
Downstream Hydrograph for the Planned Open Pit Waste Rock Pile Diversion Structure
Segment5 ( WR_ DivP5) ............................................................................... ...............................
75
Figure 45.
Downstream Hydrograph for the Planned Open Pit Diversion Structure East Segment 1
(PitDivE_P) .................................................................................................. ...............................
75
Figure 46.
Downstream Hydrograph for the Planned Open Pit Diversion Structure East Segment 2
(PitDivE_P2) ................................................................................................ ............................... 76
Figure 47.
Hydrographs for Planned SCN Pond ........................................................... ............................... 83
LIST OF PLATES
Plate 1. JD -7 Mine Major Drainage Basins, Lease Boundary, and Mine Facilities
4149A.130926 Whetstone Associates