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June 19, 2017 <br />f lag ,Resources. Inc. <br />dba flap Sand A Gravel <br />1412 CountV.Road 311 <br />)Ver Castle. CO 81647 <br />970.876-2397 <br />fax 970-876-5232 <br />fred and Janet fret <br />Mrs. Amy C. Yeldell <br />Division of Reclamation, Mining & Safety <br />1313 Sherman, St., Suite 215 <br />Denver, CO 80203 <br />Dear Mrs. Yeldell: <br />RE: Silt Pit, Permit # M-1981-202SG <br />Technical Revision - 06 <br />This Technical Revision was prepared in response to your <br />inspection report dated March 3, 2017. In the inspection report <br />the Division requested we file Technical Revision to correct the <br />amount of disturbance allowed, revise the maximum length of <br />highwall allowed before back sloping and remove the Russian Olive <br />trees from the Reclamation Plan. We are also presenting a <br />revised Reclamation Cost Estimate to include the additional <br />highwall grading and dewatering for the east lake area. <br />MAXIMUM DISTURBANCE AREA <br />Review of the most recent air photos of the site we find <br />there is approximately 46 acres of disturbed area above what <br />would be water if mining ended now. Some of this 46 acres is <br />partially reclaimed bu shaping, and resoiled but would need to be <br />revegetated. This is mostly caused because of the large amount <br />of area backfilled on the southeast side of the mine. At the <br />current time the permit allows for 40 acres above water distur- <br />bance so we need to increase the maximum allowable disturbance to <br />50 acres. We believe that from now on the amount of surface area <br />disturbance will decrease as we finish mining the Plant Site. <br />