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f 11 englnesriitg <br />e - i1ii <br />VI. FINDINGS AND CONCLUSIONS <br />1. The equipment that will be used during the MLE project is the same or comparable equipment that is <br />currently in use at the mine. Equipment manufacturers are continually working to reduce noise emission <br />levels either by incorporating new design features or developing noise reduction kits. CC&V may adapt <br />these improvements during equipment replacement or maintenance. <br />2. The significant noise sources are the dozer, rock-drills, shovel and haul trucks. A combination of a <br />hydraulic shovel working in combination with a haul truck was used to evaluate maximum off-site noise <br />profiles. <br />3. An approximate 30 ft. high noise berm will be constructed to control the noise level at certain receptor <br />sites around the mine. The approximate 30 ft. high berm is only required during the work at the upper or <br />first bench level. Once the first bench is completed the mine face will be about 35 ft. and the total height <br />including the berm will be 65 ft. <br />4. During the initial development phase of the proposed MLE project, periodic on site noise measurements <br />will be conducted to measure and confirm the predicted equipment decibel levels at key receptor sites <br />adjacent to Cripple Creek and Victor. <br />5. Noise emissions at residential and commercial receptors are projected to be in compliance with the <br />requirements set forth in the Colorado Noise Law CRS-25-12. If any noise emissions exceed the limits <br />specified in CRS 25-12, they will be mitigated to conform with required decibel readings. <br />Rev # EDI Job No. C3616 <br />Page 17 of 17 <br />3925 S. Kalamath St., Englewood, Colorado 80110 9 voice: 303-761-4367 9 fax: 303-761-4379