PERMFILE115370

• Permit No: C1981013
• IBM Index Class Name: Permit File
• Doc Date: 7/30/1987
• Section_Exhibit Name: EXHIBIT 17 REFUSE AREA DISPOSAL DESIGN
• Media Type: D
• Archive: No

t
TABLE 1

1 DITCH SIZING

Waste pile boundary 4.96 acres
Drainage boundary 8.63 acres
South ditch drainage area 4.59 acres
North ditch drainage area 4.04 acres
South Ditch
4.59 acres Disturbed drainage area
~ 89 CN
0.33 Watershed slope (Et/ft)
1.09 Slope adjacent factor
9.7 Discharge (CFS/inch)
1.90 Runoff (inches)
0.062 Ditch slope (ft/ft)
0.035 Mannings "N"
20.1 10 year 24 hour peak (CFS)
~ Use a V-ditch with 7.5' top width, 1.5' depth and 2.SH:1V sides
• 46.9 4max (CFS)
i ~
North Ditch
4.04 acres Disturbed drainage area
89 CN
0.33 Watershed slope (Et/Et)
1.09 Slope adjacent Factor
9.7 Discharge (CFS/inch)
1.90 Runoff (inches)
0.080 Ditch slope (ft/f t)
~ 0.035 Mannings "N"
20.1 10 year 24 hour paak (CF"'_')
Use a V-ditch with 7 S' top width, 1.5' depth and 2.5:;:1'J sides
53.2 pnax (CFS)