1987-12-01_PERMIT FILE - C1981017 ‎(163)‎

• Permit No: C1981017
• IBM Index Class Name: PERMIT FILE
• Doc Date: 12/1/1987
• Doc Name: Mine Portal Areas Drainage and Sediment Control Plans
• Section_Exhibit Name: Chapter II Attachment 1 to Appendix II-B-7
• Media Type: D
• Archive: No

The calculations are described in detail in the attached appendix.
}r' The attached 3 plates show design details for each mine pad area.
Design of sedimentation structures is based on Office of Surface
Mining Regulations (Federal Register, March 1979.)
-2-
2E