2010-03-15_PERMIT FILE - C1981035 ‎(23)‎

• Permit No: C1981035
• IBM Index Class Name: Permit File
• Doc Date: 3/15/2010
• Doc Name: Appendix
• Section_Exhibit Name: KII Appendix 11‎(6)‎ Sediment Pond Certification
• Media Type: D
• Archive: No

F LEMING ENGINEERING, /NC,
SOOTTFLEMIW PL� CPC
Mr. Tom Kaldenbach
Colorado Division of Reclamation, Mining & Safety
Mined Land Reclamation Division
1313 Sherman Street Room 215
Denver, Co. 80203
OFFICE LOCATION: 1239 % Main Ave
MAIL: 1907 Glenisle
Durango, CO 81301
(970) 247 -3068
(970) 259 -6285 fax
(970) 759 -3264 cell
E mail: flemingengineering( frontier.net
Web Page: www.scottfleming.com
September 15, 2009
(See Maps King
Attachments:
1. Four sheet 36 in. x 24 in. sedimentation pond and mine coal haul road as -built drawings set. I I - 0 0 7 D, E, F, G)
2. EIS Environmental and Engineering Consulting `As- Built" Sediment Pond Report as prepared for GCC
Energy.
3. Two 8.5 in. x 11 in. sheets providing a compilation of embankment density and moisture results test
documents by Trautner Geotechnical Engineers (the test result documents themselves are voluminous
but available to the CDRMS upon request to Fleming Engr.).
Mr. Tom Kaldenbach,
This letter serves to certify the sediment pond at the King II Coal Mine, CDRMS Permit # C -81 -035, located at
5652 County Road 120, Hesperus, Colorado, 81326, as constructed as designed per the following conditions:
The following are hereby certified per civil engineering criteria for this coal mine siltation impound structure:
1. The pond has been constructed and currently exists on the King II site as represented in the attached four
sheet as -built drawing set.
2. The sediment contribution to this pond and pond size calculations are certified by virtue of the attached "As
Built' calculation report prepared by EIS Environmental & Engineering Consulting to be consistent with their
original pond design.
3. The attached "Retention Pond" (sic) compaction testing report compilation summarizes the geotechnical
testing and re- testing of the impound structure to achieve constructed embankment density consistent with
the pond design specifications.
4. Pond volumes are represented in the attached as -built drawing set and are consistent with the pond design
intent.
5. Pond structures are as represented in the attached as -built drawing set and are consistent with the pond
design intent.
6. Fleming Engineering, Inc. verified that the pond construction, as represented in the attached four sheet as-
built drawing set, followed design specifications for materials and compaction.
7. EIS Environmental & Engineering Consulting verified that the anticipated sedimentation volumes and
design pond volumes are consistent with the constructed pond as represented in the attached four sheet
as -built drawing set.
Fleming Engineering, Inc. provides this certification subject to CDRMS requirements for regular inspections for
erosion, instability, structural weakness, or other hazardous conditions, required monitoring procedures, and any
other aspect of this impound structure affecting stability or requiring maintenance or regular inspection.
Regards,
Scott Fleming, PE
Fleming Engineering, Inc.
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