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�1 <br /> °v, ` STATE OF COLORADO <br /> •` %�' Roy Romer, Governor <br /> � 87 <br /> DEPARTMENT OF NATURAL RESOURCES <br /> MINED LAND RECLAMATION DIVISION <br /> FRED R. BANTA, Director <br /> February 28. 1989 <br /> Mr. Larry Perino <br /> Sunnyside Gold Corporation <br /> P.O. Box 177 <br /> Silverton, Colorado 81433 <br /> Re: Sunnyside Gold Corporation' s "Sunnyside Mine and Mill ", File Number <br /> M-77-378, San Juan County <br /> Dear Mr. Perino: <br /> The technical revision submitted to the Division, correlatina the final <br /> disposal of waste rock aenerated form minina the Sunnvside and Washington open <br /> pits with the backfilling and final reclamation of the Lake Emma Stope in the <br /> Sunnvside Basin, has been reviewed by the Division. The Droposed reclamation <br /> plan, incorporating mitioation of potential acid Droduction resultina from <br /> waste rock materials, is conceptually acceptable to the Division. <br /> Upon review of the proposal , the following need for clarification or <br /> suggestions arose: <br /> 1 . Is the "rocky overburden" proposed for the top three feet of fill the <br /> topsoil resource salvaged and stockpiled prior to excavation of the Sunnyside <br /> and Washington pits? <br /> 2. It is suggested that the top two feet of the fill material , either the <br /> overburden or topsoil placed atop the overburden, not be compacted, but left <br /> as a friable plant growth medium, followed by revegetation. The original Lake <br /> Emma reclamation plan included establishment of reveo_ etation test plots to <br /> determine of the lake sediments and/or topsoil cover could support plant <br /> growth for reveoetation of the stope fill . It is my understanding that the <br /> revegetation test plots were constructed this Dast summer. The Division <br /> prefers that the surface of the stope fill be stabilized with a plant cover to <br /> minimize erosion of the finer particle sizes from the surface. Please discuss. <br /> 3. Please Drovide the reveaetation test plot designs, construction <br /> specifications, monitorina and reportina results, etc. to complete the <br /> Division' s files. <br /> 215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel.(303) 866-3567 <br />