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EXCAVATE TO ACCOMIDATE <br />DEPTH OF RIP RAP <br />DIVERSION DITCH PARAMETERS <br />Maximum Drainage Area <br />(acres) <br />Runoff Coefficient <br />Rainfall Intensit <br />(inches /hour <br />Design Flow <br />(cubic feet sec) <br />Average Slope M <br />Roughness Factor <br />Design Depth* <br />(feet) <br />Design Width* <br />(feet) <br />46 <br />0.40 <br />1.5 <br />27.6 <br />5.0 <br />0.03 <br />1.3 <br />5.3 <br />2 5' <br />' of 6" <br />EXCAVATE TO TOP OF PROPOSED <br />ROAD SURFACE ELEVAT101V� <br />5.3% <br />rLAN V It W ' <br />118' <br />ROAD SURFACE COMBINATION <br />OF FILL AND GRAVEL <br />1 <br />REMOVE EXISTING CULVERT <br />1.00Y FILL NEEDED � BOTTOM OF EXCAVATION <br />3.1 CY FILL NEEDED <br />DITCH PROFILE / ROAD SECTION <br />1 <br />1.25 CY FILL NEEDED <br />NOTES <br />XISTING DITCH <br />1. CULVERT DIAMETER IS ASSUMED TO BE 24 °. <br />LENGTH 27', <br />COVER 0.5' min. <br />2. CONTRACTOR TO FIELD VERIFY ALL DIMENSIONS. <br />3. FINAL DIMENSIONS ARE SUBJECT TO CHANGE <br />DUE TO FIELD CONDITIONS. <br />4. REMAINDER OF EXCAVATED MATERIAL TO BE GRADED <br />INTO SIDES OF ROAD. <br />C <br />1l <br />4 <br />12' <br />1 \ <br />1.0' <br />�J 1 <br />4 <br />XIST <br />23 CY EXCAVATED MATERIAL AVAILABLE <br />ROAD CENTERLINE PROFILE/ <br />DITCH SECTION <br />Sic AWNED <br />PROFESSIONAL EMG2NEER CERTIFICATE <br />I. WILLIAM P. BALA2 JR, BEING A REGISTERED <br />PROFESSIONAL ENGINEER DO HEREBY CERTIFY THAT <br />THIS EXHIBIT HAS BEEN REVIEWED BY ME AND IS <br />TRUE AND CORRECT To THE BEST OF MY KNOWLEDGE <br />AI1D I FORMATION. <br />l iOA-7 <br />NILLIAN F SALA2 JR <br />20LORADC .ROFESSIONAL ENGINEER <br />40, 17129 <br />COLORADO COAL MINING COMPANY <br />MINE NUMBER 1 <br />PERMIT # C -81 -024 <br />TOWNSHIP 27 NORTH, RANGE 67 WEST <br />HUERFANO COUNTY, COLORADO <br />*OUNTY ROAD CROSSING <br />AT DIVERSION _ DITCH 11 <br />T ti 81987' <br />:CLAM ED LAND <br />TION DIVISION <br />SCALE 1" - 4' DATE 10/16/87 <br />KAISER STEEL CORPORATION <br />