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J. E. STOVER & ASSOCIATES, INC. <br />2352 NORTH 7T" STREEET, UNIT B <br />GRAND JUNCTION, COLORADO 81501 <br />PHONE: (970) 245 -4101, FAX: (970) 242 -7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />December 11, 2013 <br />Susan Burgmaier RECEIVED <br />Division of Reclamation, Mining & Safety <br />1313 Sherman St., Room 215 DEC 1 2013 <br />Denver, CO 80203 <br />omslON CF RECIAMAi10N <br />MINN(: AND SAFETY <br />CIVIL ENGINEERING <br />CONST. MANAGEMENT <br />Re: Bowie Resources, LLC, Bowie No. 2 Mine <br />Technical Revision #84, Gob Pile #3 configuration update and Pond J expansion <br />Permit C- 1996 -083 <br />Dear Ms. Burgmaier: <br />On behalf of Bowie Resources, LLC, enclosed is an application for a technical revision to <br />update and revise the configuration at gob pile #3. <br />This revision will accomplish five items, 1) Volume XI has been revised to mirror the <br />Volume IX structure (Gob Pile #2). New Appendices A (material balance) and B (ditch <br />and culvert design and summary) have been created. 2) The final gob configuration <br />has been increased from a 3H:1V slope angle to a 2.51-1: IV slope angle. Associated <br />geotechnical analysis is included 3) "1" ditches & culverts and PHC for Pond J have been <br />revised to reflect the revised site conditions, 4) The size of Pond J will be increased, 5) <br />"J" Ditch and culvert designs have been removed from Volume III and placed in <br />Appendix B of Volume XI. <br />Notes: <br />❑ Volume XI - Appendix A has been created based on surveys, both on the ground <br />& aerial as well as load counts. Since salvaging work is not complete, this <br />Appendix will need to be further revised once an on the ground survey of the <br />stockpiles can be completed. <br />• Volume XI - Appendix B replaces the "J" ditch & culvert designs that were in <br />Volume III. Several pages in Volume III have been either revised or removed all <br />together and are noted in the attached pages. <br />• A new Clean Water Diversion ditch has been designed. This ditch will receive <br />flow from Drainage Area D, West Diversion Ditch #1, and ponds C & D when <br />they are being dewatered. This clean water ditch is designed for the 100 -year <br />event around the gob pile, and the 10 -year event as it makes its way around the <br />