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• <br />• <br /> <br />LORENCITO CANYON SURFACE MINE - PRIMERO FILL AREAS - D[TCH <br />SUMMARY <br />FiIVCoaI <br />Seam Ditch-StomWesign <br />Size Discharge <br />(cfs) Slope <br />(%) <br />Material Depth <br />(ft)' Width <br />(ft)' <br />Sha e <br />Fill 8-1 D8-Ic; 100 76.19 12.7 Ri ra 0.91 13.46 8' Tra <br />Fill 8-I D8-Id; 100 9.33 33.0 Ri ra 0.64 12.07 10' Tra <br />P8 D8-2a; f0 5.72 I Earthen 1.26 6.30 Tri <br />P8 D8-2b; 10 1.63 1 Earthen 0.90 4.50 Tri <br />P8 D8-2c; 10 7.98 35.7 Ri ra 0.44 14.22 12' Tra <br />P8 D8-3a; 10 18.31 I.0 Earthen 0.88 15.29 10' Tra <br />P8 DS-3 b; 10 8.85 1,0 Earthen 0.69 12.06 10' Tra <br />PS D8-3c; 10 27.38 17.0 Earthen 0.52 13.13 12' Tra <br />Stockpile & <br />Loadout Loadout Area <br />Ditch- 100 7.78 I.0 Earthen 1.32 6.61 Tri <br />Stockpile & <br />Loadout Cleanwater <br />Ditch - 10 0.22 1.2 Earthen 0.56 2.79 Tri <br />P4 Diversion Unnamed Ditch 78.6 I.0 Ri ra 1.7 20.00 10' Tra <br />t-Freeboard of 0.3 feet <br />Z-Size governed by 10-year flow from all ditches <br />DitchTableExhibit 15-TBL(475)Rev2 <br />(Revised 09/ 10/01) <br />