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a~vi~~oN ~~~~Y~olu, M~~~N s~~Enr <br />Department of Natural Re~ouraes <br />~ 313 Sher<nar~ 5t,, Raarn ~ 15 <br />Denver, ~alarada ~~~~3 C~ L~ R A~ 0 D~VZSI~N OF Phoney ~343J ~6~-35~~ RE~LAATI~N <br />~nx: ~~03~ a~~-s ~ o~ I N ~ ~ <br />- - <br />~~I~~TY <br />Bill Ritter, Jr. <br />Governor <br />M~M Harris D. Sherman <br />~~~M Execut~v~ Director <br />Ronald W. Cottony aivisi~n Director <br />Natural Resource ~rust~ <br />Date: ~4 September ~~9 <br />Ta: Daniel Mathews, dead Specialist <br />From: Marcia T~lvltl~, <br />subject: Permit No. ~-~~94-~$~ - Yaast 1Vline <br />fiechnical Revision No, QTR-4~} <br />pond 4~2 Slide Reme~ia~ion Plan - ulpplementai <br />Adequacy Review - E~iueerin~ <br />with the application for Tl~-4~, Seneca foal ampny {S} submitted a report entitled, ii~.7uppler~ental ~eotechnlcal Investigations and I~ecominendatlons, Pond 1 ~ Slide, Yoast <br />Mine, l~outt bounty, Colorado"y prepared by northwest Colorado ansultants, Inc. <br />~Nw}. The report outlines the supplemental eotechnical investigations that have been conducted; describes the subsurface and groundwater conditions that have been <br />observed; and lists conclusions and recor~n~endations for continued study ofthe slide. <br />~s you requested, I have reviewed the subject report. The warp accomplished to date has <br />yielded useful data, and the xecammendations for future study appear to be sound. <br />I have no adequacy comments for this Technical revisions that would require a response <br />from Seneca foal company. <br />Please let me l~now if you have any additional questions regarding nay review of this <br />report. <br />office of office of <br />dined hand ~eclamatior~ Denver • Grind Junction # a~rango Active and Inactive Mines <br />