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JD -8 Mine — Drainage Design Plan ii <br />Table 13. Planned Dimensions for the Operational and Post - Mining Storm Water Retention Structure <br />(Pond 3) 13 <br />Table 14. Operational and Post - Mining Drainage —Peak Discharge (Qtoo) for Pond 3 14 <br />Table 15. Operational and Post - Mining Drainage Structure Parameters 15 <br />LIST OF FIGURES <br />Figure 1. Storm Water Sub - Basins at the JD -8 Mine 3 <br />Figure 2. Upland Non - Contributing Sub -Basin Areas 4 <br />Figure 3. Post - Mining Storm Water Routing Plan 12 <br />LIST OF PHOTOS <br />Photo 1. Photo of Berm and Cutoff Ditch on Access Road Southeast of JD -8 Mine Site Showing Water <br />from Upland Areas Routed Toward a Natural Channel, Away from the Mine <br />Photo 2. Eastern Portion of Waste Rock Pile Showing Constructed Catchment and Perimeter Berms for <br />Drainage Control <br />Photo 3. Western Portion of Waste Rock Pile Showing Former Rivulet and Small Gully that was Mitigated <br />by Repairing the Crest Berm <br />LIST OF ATTACHMENTS <br />Attachment 1 Culvert Hydraulic Profiles <br />Attachment 2 Rip Rap Granular Bedding Specifications (from UDFCD 2011) <br />Attachment 3 Typical Emergency Spillway Design Schematic (from FWHA 2009) <br />4122A.120702 Whetstone Associates • <br />