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#4\c s 44> <br /> RECEIVED <br /> ANOV 0 8 2017 <br /> AMERICAN DIVISION OF RECLAMATION <br /> GYPSUM MINING AND SAFETY <br /> November 7, 2017 <br /> Division of Reclamation,Mining and Safety <br /> 1313 Sherman Street <br /> Room 215 <br /> Denver, Colorado 80203 <br /> Attn: Travis Marshall <br /> Please find enclosed a partial response to the preliminary adequacy review and a complete <br /> response to the second adequacy review for TR-10. Attachments include larger and signed <br /> conceptual design drawings and slope stability analysis for the Lower Pit at the Eagle-Gypsum Mine, <br /> CDRMS Permit M-1984-041,in Eagle County. I will forward an updated reclamation cost estimate <br /> as separate correspondence to complete the preliminary adequacy review response. <br /> As we discussed on the phone last week,I would like to request an extension of the decision <br /> due date. I propose Wednesday November 22,2017 to allow for adequate review and response time. <br /> Yours very truly, <br /> i/,r <br /> /1/71/7 <br /> Jared D. • ea <br /> Mine Manager <br /> Attachments: West Pit Backfill& Grading Plan—8 Pages(Knight Piesold Consulting) <br /> Slope Stability Analysis memo, figure and attachment(Knight Piesold) <br /> American Gypsum Company—740 Highway 6—PO BOX 980—Gypsum,CO 81637—Mine Office 970-524-7944—Plant 970-524-8103 <br />