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WLx$dE 8 <br />SURFACE DRAINAGE APPENDIX <br />_ TABLE OF o0NPF31I5 <br />SIDII~ffNP YIELD <br />Evaluation of On-site Erosion Control Effectiveness and Sediment Yield at <br />Orchard Valley Mine, C. F. Leaf, 1978 <br />Application of Water Soil Loss D3uation for Predicting Impacts fran Mining <br />on Sediment Yield, C. F. leaf <br />EROSION CONPROL MEASURES <br />Vegetative Buffer Specifications <br />Straw Dike Specifications <br />Outslope Drainage Protection/Downdrain Specifications <br />RUNOFF PRIDIGTIONS <br />Storm Runoff Predictions, Sediment Retention Ponds, Drainage Plans, and <br />Sediment Control, C. F. Leaf <br />FIfJOD DESIGN <br />Flood Hydrology Design Calculations, C. F. Leaf <br />HYDROLOGY SIMULATION <br />Hydrologic Simulation Monitiring <br />WATER QUALITY <br />Semi-Annual Water Quality Update Report, 1978 <br />CULVERT CAPACIfiIES <br />Culvert Design Calculations (pages C1-C84) <br />Design Calculations East Roatcap Creek Qilvert at Proposed Bench Fill, <br />McDesmid Engineering Assoc,, 1986 <br />Maps of the Orchard Valley West Mine Portal Bench, Fast Roatcap Creek <br />Culvert, McDermid Engineering Associates, August 26, 1986 <br />Sheet 1 - Plan & Profile <br />Sheet 2 - Details <br />DRAINAGE AND DIT`CFLFS <br />Peak Flow Calculations (pages PFl-PF95) <br />Drainage Ditch Design Calculations (pages D1-D66) <br />DRAINAGE - DESIGN & LACATION <br />Drainage Plan and Design and Location of Phase I Sediment Retention Ponds, <br />C. F. Leaf ' <br />Orchard Valley West Mine Small Area Exemption Application <br />Erosion Control Plan for the Fill Outslopes at the OVWM <br />Sedimentation Pond Study Below OVid9 Bench Fill Maps <br />OVWM Material Storage Area <br />OVWM French Drain Drawing <br />OVWM French Drain Rock Buttress I,oation Map <br />East Roatcap Slide Profile Drawing <br />OV4d~i Water Tank and Ventiltion Shaft Sites Small Area Exemption <br />Application, April 26, 1988 <br />Small Area Exemption Demonstrations (pages SAE-1 thru SAE-30) <br />MAP 8-1 - Drainage Plan and Topsoil Storage Areas <br />• MAP 8-lA - Drainage Areas & Junction, Branch, Structure Sedcad+ Modelling Points <br />MAP 8-2 - Drainage Plan Timber Storage Area <br />MAP 8-3 - Coal Storage and Inadout Area <br />MAP 8-4 - Drainage Areas for Sedimentation Ponds <br />MAP 8-5 - Drainage Ditches Cross Sections <br />. MAP 8-6 - OVLd•I Facilities <br />MAP 8-6A - OVVA7 Coal Handling Facilities <br />MAP 8-7 - OVWM Vent Shaft Site Access & Power <br />TR 92-20 Revised 11/20/92 <br />