PERMFILE48654

• Permit No: C1980005A
• IBM Index Class Name: Permit File
• Doc Date: 8/5/1998
• Doc Name: CHANNEL PM-11 PROFILE
• Section_Exhibit Name: TAB 7 EXHIBIT 7-20 SHEET 11 OF 23
• Media Type: M
• Archive: Yes

s
i
2k
IL
F 7300
w
z
F
7100
w
ME
Permit Number C 5' yv GO
Class erm4 O
Se�M1OrUE,dntM: _ e l G 2414
! Class: p Re9islon� .�-_._._Akt DiZ_
TYPe/Seq:
Class- O --
Port O Hydro OGe neral_- _._______._______._._.
Doc Type;
13APWlcatlon (Coal only) p gpaa p Enforcement O InspecGO�
2% 6.9%
5.4% 8.5%
10.190
1000 2Dnn 3nnn A.,l,. All
RIPRAP THICKNESS ---------
TYPICAL RIPRAP LINED CHANNEL
NOT TO SCALE
DISTANCE (FT)
SII PM -11 CHANNEL PROFILE
NOTES:
1.) CHANNEL WAS DESIGNED TO SAFELY CONVEY RUNOFF RESULTING FROM THE
10 YEAR, 24 HOUR STORM EVENT,
2.) DESIGN FLOW ROUNDED TO NEAREST WHOLE CFS FROM SEDCAD HYDROLOGIC ANALYSIS.
3.) DEPTH OF FLOW BASED ON MINIMUM GRADE.
4.) VELOCITY BASED ON MAXIMUM GRADE.
5.) GEOTEXTILE REQUIRED FOR D50 9" OR GREATER.
300
f—
w
z
100 �
w
J
W
RECEIVED
AUG 5 IM
DIV. OF MINERALS
S GEOLOGY
SCALE
mo• o ado• 400•
HOFrZWAL k YEH11CAL
Design Flow
Sloe
Bottom Width
Slde Slope
Depth of
Velocity
Freeboard
Total Depth
Channel
O, Icfsl
I
IBW1
(H IV)
Flow IDI (it)
Ifpsl
(ft)
(ft)
111 and 121
00
131
101
PM -11
31
2 -5.6
2
3
12
650
0.3
15
F11
31
5J -12
2
3
10
6.93
0.3
13
NOTES:
1.) CHANNEL WAS DESIGNED TO SAFELY CONVEY RUNOFF RESULTING FROM THE
10 YEAR, 24 HOUR STORM EVENT,
2.) DESIGN FLOW ROUNDED TO NEAREST WHOLE CFS FROM SEDCAD HYDROLOGIC ANALYSIS.
3.) DEPTH OF FLOW BASED ON MINIMUM GRADE.
4.) VELOCITY BASED ON MAXIMUM GRADE.
5.) GEOTEXTILE REQUIRED FOR D50 9" OR GREATER.
300
f—
w
z
100 �
w
J
W
RECEIVED
AUG 5 IM
DIV. OF MINERALS
S GEOLOGY
SCALE
mo• o ado• 400•
HOFrZWAL k YEH11CAL