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blasting will not cause adverse effects on off-site areas, including the Black Hawk-Central City <br />Sanitation District Wastewater Treatment Plant and the light poles along Highway 119 owned, <br />operated and maintained by the Silver Dollaz Metropolitan District. However, the City remains <br />extremely concerned about the long-term impacts that blast vibrations could have on the sensitive <br />equipment and instrumentation contained within the Plant and the light fixtures. The City maintains <br />that C.R.S. § 34-32.5-115(4)(e) is an appropriate ground for denial and that C.M.R. 6.5(4) has not. <br />been satisfied. See C.R.S. §34-32.5-115(4)(e) ("The board or office shall not deny a permit except <br />on one or more of the following grounds:...The mining operation will adversely affect the stability of <br />any significant, valuable, and permanent manmade structures located within two hundred feet of the <br />affected land...)Z; C.M.R. 6.5(4) ("At sites where blasting is part of the proposed mining or <br />reclamation plan, the Applicant shall demonstrate through appropriate blasting, vibration, <br />geotechnical, and structural engineering analyses, that off-site azeas will not be adversely affected by <br />blasting.") <br />As detailed in the blasting report submitted by the City as Black Hawk's Exhibit 17, the light <br />fixtures contain sensitive receptors and the Plant houses instrumentation, chemical storage tanks, <br />pipe structures, rotation machinery, suspended equipment, ultrasonic sensors, and ultraviolet <br />disinfection systems, all of which could be compromised by the cumulative effect of even minor <br />blast vibrations. Damage or changes to the calibration of this equipment could alter the wastewater <br />treatment process with potentially serious harmful affects to waters of North Cleaz Creek, to the <br />City's water rights, and to the City's effluent being discharged from the Plant. <br />s Applicant disputes that Sanitation District facilities aze located within 200 feet of the affected land, but the City <br />maintains and will show at the hearing [hat Sanitation District facilities are, in fact, within 200 feet of the affected <br />8 <br />