2009-06-04_PERMIT FILE - C1996083A ‎(12)‎

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 6/4/2009
• Doc Name: Pages EXH 8-1 to EXH 8-97
• Section_Exhibit Name: Exhibit 08 Protection of The Hydrologic Balance
• Media Type: D
• Archive: Yes

•

V-Ditch Design
Ditch Grade Minimum Grade Maximum Grade RipRap Peak
Min Max Depth Velocity Depth Velocity D5o Inch Flow
C12 7.0% 12.0% 0.84 ~~>> 0.76 >~':.~`!$~ 9 6.84
C13 7.0% 11.0% 0.39 3.9 0.36 4.6 0.86
""` C14 5.0% 50% Trapezoid al Channel C-Gulch 37.17
C15 7.0% 11.0% 0.38 3.8 0.35 4.6 0.75
C16 2.0% 5.0% 1.98 6.2 1.66 `<''''<$~'
...................... 9 35.15
C17 7.0% 11.0% 0.46 4.4 0.42 5.1 1.33
*«* C18 33% 33% 0.68 «<`>'>i€~~ 0.68 „Iill~;~ 9 8.25
C19 25% 25% 0.21 4.9 0.21 4.9 0.29
C-20 7.0% 11.0% 0.40 4.0 0.37 4.7 0.93
C-21 7.0% 11.0% 0.34 3.6 0.31 4.2 0.59

C-22
7.0%
11.0%
0.91
6.9
0.84 .....................
':<~~2
9
8.37
C-23 7.0% 11.0% 0.94 7.0 0.87 ??~~<>`l~'>
..................... 9 9.13
C-24 40.0% 40.0% 0.61 ~~ 0.61 '~€ 21 6.84
*" Ri ra lined trapezoidal channel in C-Gulch -See pages 8 -17 - 8-19
*** Line with g unnite, concrete or other material to prevent infiltration.

Ditch D1 Trapezoidal Channel -See page 8-11

D2
2%
40%
1.48
5.1
0.84 ......................
<':.>~~~`:
......................
12
16.41
D3 5% 40% Trapezoid al Channel 15 6.59
D4 2% 10% 0.35 1.6 0.36 4.4 0.42
D5 2% 2% 0.60 3.4 - 0.70 2.9 1.97
D6 2% 2% 0.47 2.8 0.49 2.4 0.91
D7 2% 2% 0.34 2.8 0.35 1.9 3.80
D8 2% 2% 0.24 2.8 0.30 1.8 1.50
Ditch E1 2% 2% 0.64 2.9 0.64 2.9 1.79
G1 Renamed Ditch D-4
G2 Deleted from Design
Ditch SAE1 Deleted from Design
SAE2 Deleted from Design
Ditch FG1 30% 30% 0.21 5.4 0.21 5.4 0.33
Ditch GV61 28% 28% 0.16 4.3 0.16 4.3 0.16
GV62 17% 17% 0.15 3.2 0.15 3.2 0.11
GV63 10% 10% 0.17 2.7 0.17 2.7 0.11
GV64 47% 47% 0.20 <<f3 0.20 „'i»~ 6 0.35
GV65 35% 35% 0.18 5.2 0.18 5.2 0.25
GV66 15% 15% 0.20 3.7 0.20 3.7 0.20
GVB7 10% 2% 0.30 3.9 0.43 2.2 0.60
Berm along coal stockpile pad -flow in ditches B 30, 31, 32
Height Velocity Height Velocity
1% 2% 1.00 2.8 0.87 3.6 4.00
Berms Freeman Gulch
2% 4% 0.34 1.9 0.30 2.5 0.33

................ Provide riprap, gunnite or concrete lined V-Ditc h as
necessary for erosion protection.
Ditches cut in rock will not require erosion protection.
Flow de pth in feet d oes not include 0.3 feet freeboard.
TR-52 n PPR°"~D Exh 8-29i
~~~a ~
03/08