PERMFILE56263

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: NH1 TAB 13 ATTACHMENT C SEDIMENTATION POND 002
• Media Type: D
• Archive: Yes

• Particle Size
2
0000 Percent Finer
0
100
. .
1.0000 100.0
0.1000 85.0
0.0500 80.0
0.0020 20.0
0.0001 0.0
The specific gravity of the soil and the submerged bulk specific gravity
were estimated based on the reference cited above and are 2.5 and 1.25,
respectively.
Length - Slope Factors (L,S)
The slope length (L) and the slope (S) were determined together
according to the equation (Barfield et al., 1981):
LS = [ a ]m (430x2 + 30x + 0.43)
7~T.
•
where x is slope length, X is sin e ,
exponent dependent upon slope given by:
slope < 3%; m = 0.3
slope = 4%; m = 0.4
slope > 5%; m = 0.5
and x = Stream Elevation Difference
T e S ope Length
g is slope angle and m is an
x= 990 feet H = 59 feet
x = 990 = 0.0596
59
LS = [990]0'5 (430(0.0596)2 + 30 0.0596) + 0.43)
7~6
C~
= 2.09
8