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r <br /> MEMORANDUM OF UNDERSTANDING <br /> Department of HealthjHMWMD AND The Division of Minerals <br /> October 1992 <br /> Page 2 <br /> the mill takes waste or ore from only a single off-site source, the mill still requires a <br /> CD. If a mill ceases taking off-site wastes or ore, the mill may continue operations <br /> under the CD, or may, at its option, apply for a Mined Land Reclamation Board permit <br /> and abandon the CD. It will be up to DMG to notify Health of such action by an <br /> operator. Notification to Health will be via the notice process required for all new . <br /> applications and modifications to permits. <br /> 3. HEAP LEACHING OPERATIONS. Facilities conducting heap leaching do not require <br /> a CD, but simply a Mined Land Reclamation Board permit. The DMG will incorpame <br /> SWDFA requirements into the MLRB permit based on comments received from Health <br /> during the normal public comment period. Comments received from Health will be <br /> handled according to established DMG policies and procedures. Those requirements <br /> will be part of the MLRB permit and will be enforceable by DMG. <br /> If a heap leach mining operation imports metallic waste materials from off-site, andthe <br /> facility is "processing, reclaiming, or recycling metallic...wastes.", such activities donot <br /> trigger a CD requirement. If however, the heap leach mining operation also operates <br /> a landfill, then a CD is required. <br /> 4. MINE SITES USED AS LANDFILLS AS A POST MINING LAND USE. If the mine site <br /> landfill accepts off-site waste during the period of active operation and prior to bcrd <br /> release, a CD is necessary. DMG will condition any new permit application or <br /> modification to an existing permit such that landfill operations may not begin until a CD <br /> has been obtained. Also, where a mine site is to be used as a landfill as a post <br /> mining land use, DMG will contact Health prior to bond release for comment. DMG <br /> will not release the reclamation bond on such a site until an approved CO has been <br /> issued by the appropriate authority. The condition for bond release will be made a <br /> part of the permit approval document. <br /> (` !—C to Date <br /> David C. Shelton, Director Michael B. Long, Director <br /> Colorado Department of Health Department of Natural Resources <br /> Hazardous Materials and Division of Naturai-�es <br /> Waste Management Division <br />