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~.~ ~ ~~~~~~ ~o,~~~~ P.O. Drawer488 Glenwood Springs Colorado 81602 Mined Land Reclamation Division 423 Centennial Building 1313 Sherman Street Denver, Colo 80203 Attn: Carol Russell, Reclamation Specialist Subj: Eagle-Gypsum Mine MLRD File No. M-84-041 112 Permit Application Dear Carol, 303 •945 • 7749 18 May 1984 III III III IIIIIIIIII sss ~~~G~9is`~.~ P'EA'( 2 1 1S„~~ (f~n'FIl I can .+~~I,l teq~r~n ~ ~. ~i oi~Al ~r.b.~ ~' L.:~ , i . ... f_. .. _.......... I am happy to state that we have received our special use permit for the Eagle-Gypsum Mine from Eagle County (copy attached). Please find enclosed additional data confirming our obligations under the subject permit applica- tion regarding concerns you expressed toward drainage, topsoil and slope stabilization. We have finished our drilling and mineral evaluation work and have requested approval of a rehabilitation plan submitted to the BLM this week. This must be approved and initiated before our Plan of Operation review period can be started. Regarding drainage, our analysis indicates the 60,000 gal capacity gully check (sedimentation control) as shown on our Initial Mining Plan (see Exhibit Two) is more than adequate to control impacts of the mining operation. Existing drainage area impacting this gully check may be increased 3 to 4 acres due to topographical modifications from our mining operation. The in- crease from 10 to say 14 acres will still be facilitated by the check pro- posed, in our opinion. We also expect to install a new 24" diameter culvert in the bottom of the draw to serve as an overflow control from the sedimen- tation pond. However, in conjunction with BLM review of our Plan of Operation, final sizing changes of both the sedimentation pond and the culvert may be required by the BLM prior to approval of our plan. You will be advised of final determination upon completion of their review and acceptance of this plan. Additional gully checks will be constructed, as necessary, to protect crushing, screening and conveying equipment locations and to protect stock- pile areas. Any of these additional structures will be located and described in our annual reports and they should only beneficially impact reclamation costs. The BLM has also expressed concern regarding construction correlation with both Town of Gypsum and Eagle Valley Telecommunications Co (copy of receipt of notification to Eagle Valley Telecommunication is enclosed). We have been in contact with both entities and will document to BLM accords reached with both parties prior to any mining. Please advise if you would like results of these agreements also.