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III IIIIIIIIIIIIIIII <br />999 <br />YAIVUtiHMH kcSOUkCE 3EkV1LE5, iNG. <br />Geologists, Engineers & Fermitters <br />1415 Lorimer Street, Suite 75V <br />Uenver, Cdl orado bv2V2 <br />JO~i-624-%39D <br />I`Say .i6, 19ti5 <br />i"Ir. Michaet S. Savage <br />I keclamatrdn Specialist <br />Mined Land keciamation llivision <br />Cdlorad^ Department o+ 14atural kesources ~„ <br />1.113 Sherman St., koom 423 <br />Denver, Colorado eutos I ~. ; <br />~., ., <br />Fe: Certification ^+ Fonds at Trinidad Hasin Mine '--~~ ~~...w. ~,,,,~I.e; <br />llear Mike: <br />Enclosed is the intormation you requested concerning th° pond <br />certi+ications at the Trinidad Nasin Mine. Elevations are <br />reported as ditferences +ram r_ne bot=tom o+ the pond. It is not <br />necessary to report the actual elev:~tidns above sea level +or <br />each point ^r the ponds. !t_ is important to see that: <br />(A) rar_h pond is situated propery. according t^ the design, <br />(i+) the proper drainage area tlowe into the ponds, <br />lC) ai.l r_ollection and diversion ditches related to the pond are <br />satis+actory, <br />(ll) the cewatering pipes, spillway-., tdd of dams, etr. are <br />installed to insure proper pond volumes. <br />!n some cases, elevations are not exactly as shover. in the design, <br />however, adequate sediment volume, runoff storage volume ana <br />treeboard requirements exist in all cases. <br />1f there ar-e any questions, please call. <br />Sincerely, <br />NANOkAI1A RESOURCE SERVICES, 11Vt;. <br />C~ <br />Gregory L'. Lewicki, F'. E. <br />llirectur-Engineering Services <br />cc: l~;rs. Mary f+artlett <br />Trinidad Nasin Mining, lnc. <br />