2016-08-08_PERMIT FILE - C1981019A ‎(115)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 8/8/2016
• Doc Name: Sediment Control System Analysis at End of Mining
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Part I
• Media Type: D
• Archive: Yes

ENGINEERING CERTIFICATION
I am a Licensed Professional Engineer in the State of Colorado and a representative of
Environmental Solutions, Inc., P. O. Box 2996, Cheyenne, Wyoming. The information
contained in this document was provided by Colowyo Coal Company. Being familiar with the
Colowyo operation and the coal permitting process in Colorado, the information contained
herein is reasonable and correct to the best of my experience.
`���� �p0 L
$0 19-
i
: p
32257 z
%Z_//5%
ON
.'t.
F'�►� r
.E. No. 32257
Exh. 7-23I-5 Revision Date: 2/15/16
Revision No.: PR -04