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DENVER OFFICE Amendment #1 Exhibit C -Mining Plan continued Received JUN 0 51997 Durango Field Office F. Dimensions of Significant Disturbances; Division of fl;inoral~ 8 Geology The total impacted land surface will be 9.7 ac.. No Impoundments or waste disposal areas are anticipated. The mine will be opened by pulling the or pushing materials into the pit away from the edge with a track hoe or dozer creating a berm around the perimeter of the mine site this will minimize any oft=site movement of materials by rolling down the hill. This berm will be reduced in size as the mine deepens by continuing to push or pull the berm into the pit floor. The surface area impacted will continue to enlarge as the pit progresses, reclamation will occur after the pit has been mined out. El.>1' A buffer will be maintained along they~esTpit boundary sufficient to store topsoils for future reclamation (-15ft). G. Roadways; No changes H. Water Usage and Source; RECEI\/FD No Changes JUN 16 1997 I. Surface or Groundwater Disturbance; Division of minerals a ueuiogy No Changes J. Compliance with Colorado Water Law; There is no impact to adjoining or downstream users as the site is a "dry site". Berms will be maintained around the pit floor to contain onsite any potential stormwater runoff. The site will be maintained as a "NO Discharge" site. K. Acidic and Toaic Materials; No acidic or toxic materials are to be used or stored on the site. Bulk liquids associated with equipment refueling and asphalt production will have temporary earthen berms installed surrounding the containers while stored on-site. The berms will be constructed to sufficient size to control any accidental spillage. Atypical berm may be 1 to 2 feet high constructed of fine grained on site soils, plastic sheeting may be added as necessary.