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TRAPPER M~N~NG ANC. iii iiieiiiiiiiiiiii 999 May 14, 1998 FiECEIVE® Mr. Tom Kaldenbach Environmental Protection Specialist Colorado Division of Minerals and Geology 1313 Sherman St. Room 215 Denver, CO 80203 ~iAY 18 1998 Division of Minerals fl Geology Re: Permit No. C-81-010; Minor Revision MR-163; Topsoil Pile A94-4 Relocation Deaz Tom: With this minor revision application, Trapper Mining Inc. is requesting approval to relocate topsoil pile A94-4. This relocation is necessary due to the recent development of a landslide in the immediate vicinity of topsoil pile A94-4 which could potentially jeopardize the stored topsoil resource if not addressed. The landslide most probably resulted from unusually wet climatic conditions prevalent at the mine site and surcounding area during the fall of 1997 and spring of 1998. Several slides are known to have occurred on native ground outside of the mine permit area this spring. The landslide affecting topsoil pile A94-4 appears to be the result of an instability developing in natural ground as opposed to replaced mine spoil. A scarp exhibiting approximately ZO feet of displacement encompasses a portion of the topsoil pile and extends into undisturbed native ground adjacent to the pile. The extent of the slide and the involved azea of the topsoil pile are depicted on the enclosed Figure 1. Topsoil pile A94-4 relocation (MR-163). Topsoil pile A94-4 had been stable since 1994 when it was established. No topsoil was lost as a result of the slide. Trapper proposes to relocate that portion of the topsoil pile affected by the slide (as shown on Figure 1) and any additional portions of the pile which might be jeopardized by further development of the slide in the future. The topsoil will be moved to a previously undisturbed area immediately east of the existing pile location. The exact extent of the potential new disturbance is not known at this time. Trapper proposes to identify the as-built location of the relocated pile and the resulting extent of any additional disturbance in the 1998 Annual Report. In the interim, additional bonding calculations have been included in the pending PR-04 application to address the proposed new disturbance. Tables 1.4-1 and 1.4-9 as submitted under PR-04 are included with this minor revision application as backup information only. After the topsoil pile has been relocated, Trapper will establish a monitoring system to track any further P.O. Box 187 Craig, Colorado 81626 (970) 824-4401