PERMFILE123765

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 08 TAB 2.3 F Ditches Design
• Media Type: D
• Archive: No

iii i~~iiiiiiti~iiii
999
•
S~E ~ E'><ti • S
IPS z.3
• ~
• )
TABLE A
DESIGN SPECIFICATIONS
SEDIMEN'C PONDS D, E, F AND G
Ditch F-1 F-2 F-3
Design Event (24 hr/yr) 10 10 10
Rainfall Event (inches) 1.8 1.8 1.8
Runoff (inches) 0.9 0.9 0.9
Watershed (acres) 4.8 5.6 10.4
Curve Number 90 90 90
Runoff (acre-ft) 0.34 0.4 0.38
Additional Volume (acrrft) - -
Total (acre-ft.) 0.34 0.4 .038
Feak Runoff Flow (cfs) 6.8 7.5 7.5
Additional Flow (cfs) - -
7ota1 Peak Flow (cfs) 6.8 7.5 7.5
Slope 0.070 0.017 0.050
Side Slope (v:h) 3:1 3:1 3:l
Width at Bottom (ft.) 3 3 3
Depth (ft,) 2 2 2
Manning Coefficient 0.042 0.042 0.042
Full Flow (cfs) 185.0 91.2 156.3
Vel«ity at Full Floty (fps) 10.3 5.1 8.7
Depth of Peak Flow (ft.) 0.1 0.1 0.1
Vel«ih• at Peak Flow (fps) l.5 l.0 l.4
rae z.s, ~.~
PetTnit Renewal No. 3 Ez. 8-8 11/1/99
FORMERLY