GENERAL40564

• Permit No: M1989065
• IBM Index Class Name: General Documents
• Doc Name: PRE MINING CONDITIONS
• Media Type: D
• Archive: No

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CENTENNIAL MATERIALS, ING:: a ~~~ ~ ~ ~ _ ;? ~... ~ 94-182
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10-yeaz 24-hour event 100-year 24-hour event

Sub-Basin Total
Area
(acres)
Curve
Number Time of
Concentration
(hours) Time of
Concentration
(min) Runoff
Volume
(ac-ft) Peak
Dischazge
(cfs)
Peak q
(cfs/ac) Runoff
Volume
(ac-ft) Peak
Discharge
(cfs)
Peak q
(cfs/ac)
186 74 0.82 49 ] 3. ] 61 0.3 29.4 150 0.8
2 58 62 0.63 38 1.7 6 0.1 5.3 27 0.5
3 175 71 0.77 46 10.2 46 0.3 24.4 126 0.7
4 152 77 0.84 50 12.7 77 0.5 27.0 138 0.9
5 34 75 0.4 24 2.5 18 0.5 5.6 42 1.2
6 48 77 0.36 22 4.0 18 0.4 8.4 42 0.9
7 40 77 0.47 28 3.3 22 0.6 7.1 50 1.3
8 45 80 0.48 29 4.4 30 0.7 8.9 63 1.4
9 33 81 0.49 29 3.4 23 0.7 6.8 47 L4
C:PROJECTS\94189\WINDRAIN.XLS