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~~ .. <br />J <br />5TA_ TE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Deparimem of Nalu rat Resources ~~~~ <br />I {13 Sherman 51., Ruum 21 5 <br />Denver, Colorado 80203 <br />Phone: 1303) 866-3567 <br />F4\.1303)832-8106 <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />Governor <br />DATE: September 14, 1995 <br />lames S. Lochhead <br />Enecmive Director <br />TO: File No. M-94-117 Michael B. Long <br />{ Dwieion Director <br />FROM: Allen Sorenson l/] <br />RE: Removal of Water from the Hazel-A Adit, Colina Oro Molino, <br />Inc., Gold Hill Mill, Permit No. M-94-117 <br />The Division received a phone call from Bob Mason of Gold Hill Town <br />Meeting, Inc. Mr. Mason stated that he has recently observed that there <br />is only a small amount of water in the tailing pond at the Gold Hill Mill, <br />and that there is still a large volume of water impounded behind the <br />Hazel-A adit, estimating that the water level behind the Hazel-A is <br />currently about 9 inches lower than it had been on August 26, 1995. The <br />Division has not verified these observations, however, Mr. Mason's reports <br />on the Gold Hill Mill have always been accurate and reliable. <br />In the Division's inspection report dated August 26, 1995, it is stated <br />that: <br />It is imperative that all water be purged from the Hazel-A, through <br />evaporation in the tailing pond, as soon as possible. <br />It is further stated, in the same inspection report: <br />The storage capacity behind the Hazel-A bulkhead should be managed <br />such that adit is essentially dry except after significant rain <br />events. Whenever sufficient freeboard exists in the pond, water <br />should be pumped from the Hazel-A to the pond to allow evaporation. <br />If pan type evaporation proves to be insufficient, the Division will <br />require a spray system to be installed to enhance evaporation. <br />According to Mr. Mason, there is ample room in the pond to accept <br />additional Hazel-A water without interference with the required liner <br />repairs. The operator must maintain maximum water surface area in the <br />pond, without compromising liner repair operations, in order to maximize <br />evaporation. If this requires a daily presence by the operator to run the <br />pumps, then that is what will be required. The Division reiterates that <br />it is imperative to maintain the Hazel-A in a dry condition for it to be <br />useful for auxiliary storm water and snowmelt storage. It is important <br />to emphasize that the water pools from which Hazel-A water is to be <br />