PERMFILE128459

• Permit No: C1981014
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Determination of Hydrologic Consequences, Simons, Li & Associates
• Section_Exhibit Name: EXHIBIT 07 Part 2
• Media Type: D
• Archive: No

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TABLE OF CONTENTS (continued)
Page
VI. DESIGN OF CULVERT'S, CHANNELS, AND SEDIMENT PONDS
6.1 Internal and Noncontributing Drainage 35
6.2 Culvert Evaluation. 36
' 6.2.1 Culvert Design 38
6.2.2 Existing Culvert Adequacy. 38
6.2.3 Proposed Culvert Design. 41
• 6.2.4 Culvert Outlet Erosion Control 42
6.3 Sediment Pond Evaluation and Design 44
6.3.1 Snovmelt Runoff. 45
r 6.3.2 Rainfall Volume for 10-Year,
24-Hour Storm Event. 48
6.3.3 Sediment Storage Volumes 50
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6.3.4 Sediment Pond Adequacy 52
6.3.5 Reservoir Shape and Short Circuiting 52
6.3.6 Sediment Pond Maintenance. 53
6.4 Diversion Channel Evaluation and Design 53
6.4.1 Minor Diversion Channels 55
6.4.2 Major Diversion Channels .. 62
6.4.3 Channel Restoration. 70
6.4.4 Comments on Channel Design and Restoration 75
VII. SUMMARY AND CONCLUSIONS. 78
APPENDI Y. A ~ . Map Pocket
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