2009-09-29_PERMIT FILE - C1994082

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 9/29/2009
• Doc Name: Drainage and Sediment Control Plan
• Section_Exhibit Name: Tab 13 Attachment 13-12
• Media Type: D
• Archive: No

Fe&wmy 1999 Yoast Mine * 13-12 Drainage and Sediment Control Plan #ii
LIST OF TABLES

Table No.
13-12.1
13-12.2
13-12.3
13-12.4
13-12.5
13-12.6
13-12.7
13-12.8
Description Page No.
Yoast Mine Curve Numbers .....................................................................................4
Soil Erodibility Factor ................................................................................................5
Control Factor ............................................................................................................5
Practice Factor ............................................................................................................6
Yoast Mine Sedimentation Pond Design Summary ..............................................8
Guide to Retardance Class Selection .................................................................... 11
Turf Reinforcement Mat Performance Guide .................................................... 13
Stock Pond Spillway Summary ...............................................................................15
LIST OF FIGURES
0
Figure No.
Description
Page No.

13-12.1
13-12.2
13-12.3
Ditch Design Schedule .........................................................................................17
Culvert Design Summary .....................................................................................18
Postmining Channel Designs (3 Sheets) ............................................................19
Montgomery Watson Mining Group * 165 S. Union Bomkvarg Suite 460 * lAkewoo,4 Colorado 80228 * [phone]
TR-44 Revised 08/09