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15. "There aze several setback distances given. Map 3 shows 25 feet. On the same sheet the Typical-Topsoil Stockpile at Edge of Mining areas Cross section , shows a 10- foot set back from the top of excavation slope, then an undesignated distance for temporary top soil stockpiles, and an additional 25 feet to 50 feet to the property line. The Reclamation Plan Map 6 shows a 37-foot set back. We assume that all ofthese distances are measured from original ground elevation horizontally to the property line. Which distance is correct? (Colorado Department of Transportation; March 26, 2005) Division of Minerals and Geology (DMG) Responses- The Division reviewed the applicant's stability analysis to define a minimum distance between the toe of the mining slope and the adjacent structures. The mining setbacks are established as horizontal distances measured from the toe of the mining slope to the various structures located around the proposed pit. The applicant will maintain an 100-foot mining off-set distance from the toe of the slope to the CDOTrfght-of--way. This distance is depicted on the Mining Plan Map (Sheet 3 of 7). ISSUES RAISED DURING THE INITIAL COMMENT PERIOD THAT THE DIVISION BELIEVES ARE NOT WITHIN THE JURISDICTION OF THE DIVISION OR BOARD 16. "We aze very concerned about the noise generated by the heavy equipment to operate a gravel pit. There are noise standards that must be observed. We know of no studies that will guazantee that these noise levels will be maintained at our residence." (Georgia and Jerry Landrus; March 6, 2005) 17. "We have a small child and in addition to the safety problems, there is the dust problem. Health studies show that during the lung development phase, pollutant inhalation can produce life-long effects. These pollutants would include not just the dust generated by operations, but the emissions from the heavy equipment. The black soot (elemental cazbon) from the diesel exhaust is a proven carcinogen. The exhaust from this equipment needs to have adequate emissions controls to mitigate our exposure to these pollutants. This needs to be thoroughly studies and stringent mitigation measures included in any permit issued to the company." (Georgia and Jerry Landrus; March 6, 2005) 18. "There is no mention of the hours of operation for the gavel pit. The introduction of lights and nighttime operation of heary equipment would not only be intolerable but would be a health hazazd due to the lack of sleep caused by the lights and noise. Any permit issued must restrict the hours of operation for this gravel pit to daylight hours but not to exceed 10 hours a day or 250 hours a year."(Georgia and Jerry Landrus; March 6, 2005) 19. "Another problem is the reduction in our property values. The introduction of this operation could have a devastating effect on our property values. Some studies show that they can be expected to drop between 25% to 65% for a residence neighboring a gravel pit. This is a big concern for us."(Georgia and Jerry Landrus; March 6, 2005)