PERMFILE52028

• Permit No: C1981020A
• IBM Index Class Name: Permit File
• Doc Date: 5/13/2002
• Section_Exhibit Name: Appendix M‎(i)‎ to M‎(viiI)‎
• Media Type: D
• Archive: Yes

• 4) Control practice factor (OP) = 1,30 - Calculation
of ~P is based on worst anticipated condition.
CP = CS • CR • CO
~g = Control factor due to surface stabilization
~R = Control factor due to runoff reduction practices
~p = Control factor due to other practices.
(Assume unity for factors ~R and gyp),
OS = 1,30 (Fr om Table 5.4 - Typical OS Factor
Values reported, page 202)
(assume compacted fill by bulldozer
CP = (1,30 (1,0)(1,0) = 1,30
5) Sediment delivery ratio (OR)
DR = DA DV nC
•
DA = Area effect on delivery ratio
T,~V = Vegetative trapping effects
DC = Effects of channelization
a> DA = 0,70
(From Fig 5.23. Sediment-Delivery ratio versus
size of drainage area, ?lA, pg 223)
b) DR = 1,0
c) DC = 0.60
(From Fig 5.24 effect if relief-length ratio on
delivery ratio, TIC. PG 22~-)
R = 35 = 0,39 ~ Dc = 0,60
L ~
0
• o o DR =(0,70)(1,0)((0,60) = 0,42
Assume 420 of sediment produced is delivered