2014-02-07_REVISION - M1979094HR ‎(5)‎

• Permit No: M1979094HR
• IBM Index Class Name: REVISION
• Doc Date: 2/7/2014
• Doc Name: Revised DDP
• From: Whetstone Associates
• To: DRMS
• Type & Sequence: AM1
• Email Name: TC1
• Email Name: DMC
• Media Type: D
• Archive: No

JD -7 Mine - Drainage Design Plan iv
Figure 9. Aerial Photograph Showing Sub - Basins N -A, N -B, N -C, N -H, and N -I Reporting to Valley Floor
4149A.140207 Whetstone Associates
South of Soil Stockpile and Planned Open Pit Waste Rock Pile ................. ...............................
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Figure 10.
Photographs of JD -7 Pit Pool in February and August, 2012 ...................... ...............................
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Figure 11.
Site Map Showing Sub - Basins and Stormwater Routing in Mine Facilities Area (Current
Condition) .................................................................................................... ...............................
30
Figure 12.
Detailed Site Map Showing Stormwater Retention Ponds and Underground - waste -rock Pile...
31
Figure 13.
Photos Showing Natural Streambed and Scour in Major Sub -Basin B2 ..... ...............................
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Figure 14.
Examples of Type 1 and Type 2 Ephemeral Channels in Major Sub -Basin B2 .........................
34
Figure 15.
Channel Profiles Measured and Improved in Pit Diversion West ................ ...............................
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Figure 16.
Photograph of Pit Diversion West Profile PDW- 2 ....................................... ...............................
36
Figure 17.
Photographs of OPWRD Diversion and Tributary Reach NEChI ............... ...............................
37
Figure 18.
Photograph of Stormwater Retention Pond 001B -A South ......................... ...............................
40
Figure 19.
Hydrographs for Expanded Catchment 00113-A North ................................ ...............................
42
Figure 20.
Hydrograph for Catchment 001B -A South .................................................. ...............................
43
Figure 21.
Non - Contact Stormwater Routing (Current Condition) ............................... ...............................
45
Figure 22.
Schematic of Stormwater Routing for the Open Pit Waste Rock Pile Diversion Structure
( OPWRD) at the JD -7 Mine ......................................................................... ...............................
46
Figure 23.
Schematic of Stormwater Routing for Non - Contact Sub -basin Reporting to the Valley Floor and
PitDiversion East ......................................................................................... ...............................
46
Figure 24.
Schematic of Stormwater Routing for North Portion of Site ....................... ...............................
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Figure 25.
Schematic of Stormwater Routing for North Portion of Site and Mine Yard Area ....................
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Figure 26.
Downstream Hydrograph for the Pit Diversion East (PDE) Diversion Structure .......................
51
Figure 27.
Downstream Hydrograph for the Pit Diversion West (PDW) Diversion Structure ....................
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Figure 28.
Downstream Hydrograph for the Open Pit Waste Rock Pile Diversion Structure Segment 1
(WR_Div 1) ................................................................................................... ...............................
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Figure 29.
Downstream Hydrograph for the Open Pit Waste Rock Pile Diversion Structure Segment 2
( WR_ Div2) ................................................................................................... ...............................
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Figure 30.
Trapezoidal Channel Geometry showing Freeboard .................................... ...............................
55
Figure 31.
Discharge Hydrograph for Expanded Pit Pool, Assuming Structure is Full at the Start of the
100 -Year Storm Event .................................................................................. ...............................
57
Figure 32.
Hydrographs for Catchment 001B -A South ................................................. ...............................
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Figure 33.
Hydrographs for Catchment 001B -A North ................................................. ...............................
60
Figure 34.
Hydrographs for the Mine Yard Area .......................................................... ...............................
61
Figure 35.
Minor Sub - Basins and Stormwater Routing within Major Sub -Basin B -3 (Planned Condition)
64
Figure 36.
Site Map Showing Sub - Basins and Stormwater Routing in Mine Facilities Area (Planned
Condition) .................................................................................................... ...............................
65
Figure 37.
Photographs of Natural Drop Structures on Monogram Mesa Escarpment . ...............................
70
Figure 38.
Stage- Storage Curve for Planned SCN ........................................................ ...............................
73
Figure 39.
Aerial Photograph Showing Existing Upstream Storage Pond at the toe of the Existing OPWRP74
Figure 40.
Schematic of Stormwater Routing for the Planned Open Pit Waste Rock Pile Diversion
Structure( OPWRDP) Planned ..................................................................... ...............................
76
Figure 41.
Schematic of Stormwater Routing for the Planned Pit Diversion East Structure (PDEP) ..........
76
Figure 42.
Schematic of Stormwater Routing for the OPWRDP and NDP Diversion Structures and SCN
Pond.............................................................................................................. ...............................
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Figure 43.
Downstream Hydrograph for the Planned Pit Diversion East (PDEP) Diversion Structure.......
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Figure 44.
Downstream Hydrograph for the Planned Pit Diversion West (PDWP) Diversion Structure ....
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Figure 45.
Downstream Hydrograph for the Planned Open Pit Waste Rock Pile Diversion Structure
Segment1 ()XrR_DivP 1) ............................................................................... ...............................
80
Figure 46.
Downstream Hydrograph for the Planned Open Pit Waste Rock Pile Diversion Structure
Segment5 ( )XrR_ DivP5) ............................................................................... ...............................
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4149A.140207 Whetstone Associates