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Civil Software Design - SEDCAD+ Version 3.1 <br />Copyright (C) 1987-1992. Pamela J. Schwab. All rights reserved. <br />Company Name: CYPRUS YAMPA VALLEY COAL <br />.1 Filename: E:\SEDCAD3\TCC\DEH20D User: CWB <br />1 Date: 06-02-1995 Time: 08:13:10 <br />CULVERT EMD-4 ON ACCESS ROAD TO TCC DEWATERING FACILITY <br />storm: 1.80 inches, 10 year-24 hour, SCS Type II <br />Hydroqraph Convolution Interval 0.1 hr <br />~_ <br />NON-POND STRUCTURE INPUT/OUTPUT TABLE <br />J1, H1, S1 <br />CROPLAND ON HINCO <br />Drainage Area from J1, B1, S1, SWS(s)1: 94.4 acres <br />Total Contributing Drainage Area: 94.4 acres <br />Entrance <br />Loss Maximum Pipe Pipe Manning's <br />Coefficient Headwater Lengqth Slo e n Tailwater <br />~ <br /> (ft) (ft) ($ <br />(ft) <br /> <br />0.90 4.0 30.0 5.0 0.024 0.2 <br />Minimum Pi a Diameter Required: 36.0 inches <br />(See Culvert Utility Program for full performance curves) <br />Runoff Peak <br />Volume Discharge <br />(ac-ft) (cfs) <br /> <br />IN/OUT 5.13 40.65 <br />,-r~... ~w*w,r*,r,rrr**,t,-,r*,r,-**t**,-,r,r**,-,r*,r,r,t,t***,tw**,r*,rr,r******,r*,t,t*rw**,r*******t,r** <br /> <br />~~ <br />PR93-03 Exhibit 8a, Page 18 of 18 RPVicarl 4n n~9c <br />