Laserfiche WebLink
STATE OF COLORADO <br /> DIVISION OF MINERALS AND GEOLOGY <br /> Department of Natural Resources oF'eoto <br /> 1313 Sherman St.,Room 215 <br /> • . <br /> Denver,CO 80203 * » <br /> Phone:(303)866-3567 4 <br /> ,876« <br /> FAX-(303)832-8106 <br /> Roy Romer <br /> Governor <br /> Michael 6.Long <br /> Division Director <br /> MID-CONTINENT STATUS UPDATE <br /> November 3, 1993 <br /> Refuse Pile Instability <br /> The stability of the refuse pile near Dutch Creek is a concern <br /> which has been addressed historically by the Division. The <br /> Division has required that the company complete engineering <br /> analysis of the pile. These analysis, completed by professional <br /> engineers, indicate that the piles are stable and are not subject <br /> to failure. <br /> The stability of the foundation upon which the pile is <br /> constructed is a more recent concern of the Division. Last July, <br /> the Division directed Mid-Continent to move the stream away from <br /> the cliff underlying the pile, and to build a protective <br /> foundation against the cliff. The Army Corps of Engineers is now <br /> involved in the stream relocation proposal. <br /> Sedimentation From Roads <br /> The Division has identified this as a serious problem, and has <br /> issued Mid-Continent Resources Notices of Violation which require <br /> the company to control sediment leaving the mine property. The <br /> Company is working to abate the violations. Final reclamation of <br /> the mine will require that the road system be narrowed to an <br /> appropriate post mining width, and revegetated to minimize <br /> erosion and sediment contributions to streams. <br /> sediment From Mine Bench Outslopes <br /> The Division identified this as a problem, and has required that <br /> Mid-Continent establish vegetation on these slopes as part of the <br /> reclamation process. This change to the reclamation plan was <br /> accomplished with public input in July, 1993 . Vegetation will <br /> stabilize the slopes and serve to minimize erosion and resultant <br /> sedimentation. <br /> Contamination of the Crystal River <br /> The Division has completed preliminary analysis of water quality <br /> data generated at the mine. In addition, the Division has <br /> undertaken an intensive water quality sampling program in order <br /> to define and isolate any water quality problems which may be <br /> OVER <br />