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• 5. Compute la/P ....................... = 0.2821 <br />• <br /> <br />6. Unit peak discharge, qu......csm/in = 429.02 <br />7. Runoff,Q .........................in = 0.4844 <br />8. Pond & swap adjustment factor,...Fp = 0.87 <br />9. Peak Discharge,gp ...............cfs = 32.3750 <br />CULVERT 113 <br />These are 2 - 42" CMP's under 5th Street which connect two parts of Pond 7. The Pond 7 design <br />shows how these culverts were designed. <br />CULVERT 114 <br />This 42" CMP is where the CC Ditch overtlow crosses the access road to get to the HDPE pipe inlet <br />from 2700 Road. The size of the culvert is based on the maximum ditch overflow. There is no <br />drainage basin into this culvert. <br />CULVERT 115 <br />This is the 42" pipe which contains the actual HDPE pipeline under the B8 Detour Road. When the <br />detour is removed, this culvert will remain with a mound of dirt above it since the pipeline is <br />permanent. <br />CULVERT 116 <br />This 18" CMP is actually an erosion control pipe allowing water from Ditch C11 to enter Pond 8 on <br />its incised steep embankment. The steepness of the pipe and the fact that the surrounding ground <br />can handle the overFlow allows the 18" pipe to be acceptable in this case. <br />REVISED MARCH 2006 <br />Attachment 2.05.3(3)-1-76 <br />