1987-12-01_PERMIT FILE - C1981017 ‎(167)‎

• Permit No: C1981017
• IBM Index Class Name: PERMIT FILE
• Doc Date: 12/1/1987
• Doc Name: Overland Conveyor Site Dainage Calculations July 30, 1989
• Section_Exhibit Name: Chapter III MR-22
• Media Type: D
• Archive: No

COAL BASIN MINE PERMIT APPLICATION
MID-CONTINENT RESOURCES, INC.
CARBONDALE, COLORADO
ATTACHMENT II-B-App.7-4
ROCK TUNNEL AREA
DRAINAGE CONTROL PLAN
TABLE OF CONTENTS
Section Subject Pages
A Description of RockTunnel Area Water Control
Structures 1-2
B M-K Rock Tunnel Sediment & Drainage Control
Structures 3-6
1. Methods
2. Design
• C Rock Tunnel Sedimentation Pond Calculations 7-14
1. General data
2. Sub area drainage data
3. Precipitation data
4. Runoff-type II storm
5. Discharge - type II storm
6. Pond design
7. Sediment yield
8. Pond design criteria
D Geo-Hydro Pond Specifications 15-19
E Technical Revision - New Tunnel Mine Discharge Ponds 20-44
LIST OF FIGURES
Number Subject Page
1 Site Plan - Coal Basin Mine Area 4
2. M-K Drainage and Sediment Control 5
3 Portal and Yard Area Cross-sections 10
4 Channel Relocation Cross-section 11
5 Pipe Removal Diagram 12
6 Temporary Sediment Pond Design 13