2015-03-09_PERMIT FILE - C1981012

• Permit No: C1981012
• IBM Index Class Name: Permit File
• Doc Date: 3/9/2015
• Doc Name: TR70 One New Culvert
• Section_Exhibit Name: Exhibit 19 ‎(25)‎ One New Culvert TR70
• Media Type: D
• Archive: No

Exhibit 19(25)
One New Culvert - TR -70
Determine Effect of Installing New Culvert C -19
Reference Map 13
Basis for Calculations:
1. New Culvert C -19 adds flow to Ditch D -15 and all ditches and culverts
downstream of Ditch D -15. The following table presents the flow values for C -19
and the downstream structures based on approved flow values in Tables 20 and
21.
Structure
Flow
cfs
Cumulative
Flow cfs
Comment
C -19
3.98
Flow from C -9, Table 21
D -15
8.75
12.73
Flow of 8.75 cfs from Table 20
C -72
12.73
Conveys D -15 Flow
C -73
12.73
Conveys D -15 Flow
C -74
12.73
Conveys D -15 Flow
C -13
12.14
24.87
10 Year Flow from D -12 and D -14, MR -112
D -32
24.87
Handles Cumulative Flow
C -64
24.87
Conveys D -32 Flow
C -65
24.87
Conveys D -32 Flow
D -32A
0.1
24.97
Flow from Table 20
D -32B
0.34
25.31
Flow from Table 20
D -22A
21.51
46.82
Flow from Table 20
C -22
46.82
Optional Culvert
C -32
46.82
Conveys D -22 Flow to Pond 007A
2. The following SedCad utility runs determine the culvert and ditch sizes based on
the flow values in the above table. SedCad runs are not provided for contributing
culvert C -13 and Ditch D -22.
3. The revised culvert and ditch sizes and flows are incorporated into Tables 20
and 21.
ENGINEER'S CERTIFICATION
The calculations and infor 'n pr, d on pages EXH 19(25) -2 through 19(25) -11 with
a date of August 12, 201 prep . me during the month of August 2014, and the
information presented , e a d cort�he best of my knowledge and belief.
0 0 *�
o* o
Ja toyer `.�+► Date
Re ist1 1, �p ' � � sneer
State of Col'c>�ad 1 6. 19230
TR -70 Page EXH 19(25) -1 08/12/14