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all ground and surface water quality standards aze met, including any <br />surface streams found on Colorado's 303(d) list. <br />Wastes, Hazardous or Solid: <br />• Potentially hazazdous materials will be used during mining. <br />• Solid waste will be generated during these activities. <br />• Improper handling of these materials and wastes can affect the local environment <br />• Hazazdous materials found at the site include explosives and flammable or <br />combustible motor fuels. <br />• A 1,000 gallon tank containing a dilute solution of magnesium chloride is <br />proposed to remain at site <br />• Propane tank <br />• Waste Rock: <br />o Impacts associated with waste rock storage, including the potential for <br />rain-induced runoff events and other sediment loading attributed to surface <br />water runoff should be thoroughly examined in any environmental <br />assessment performed at the Whirlwind Mine site. Waste rock storage <br />currently proposed, would result in: <br />^ The lazgest single disturbance at the Whirlwind site (approximately <br />10 acres of disturbance) <br />^ potential storage of 900,000 tons of uranium waste rock over the <br />life of the mine <br />• potentiai impacts to surface and ground water from leaching and <br />erosion of waste rock pile <br />• impacts to visual aesthetics <br />Underground Disposal of Waste: <br />o It is stated within the Plan of Operations that "some of the waste produced <br />during later development and production may be disposed of <br />undergound," <br />o And that "...waste rock would be disposed of underground in mined out <br />azeas." <br />With respect to each of these aspects, we encourage the Division to require a <br />comprehensive mitigation and reclamation plan, so as to eliminate unanticipated impacts. <br />For instance, all waste rock and other ore-storage or disposal azeas should be lined and <br />monitored for water quality impacts, including storm runoff events. Any spills or <br />contamination should be required to be immediately reported and mitigated. If such <br />accidents occur, a full review of the reclamation plan should commence to ensure against <br />additional problems. End of mine reclamation should require capping and re-vegetation <br />with native seeds or similaz measures to permanently protect against future water quality <br />and other environmental impacts associated with long-term disposal. <br />Milling Facilities: <br />