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RULE 4 PERFORMANCE STANDARDS <br /> Copies of the blasting schedule will be republished and redistributed every 12 months by mail to <br /> local governments and public utilities and by mail or delivered to each residence within one-half <br /> mile of the blasting site described in the schedule. <br /> 1. Destruction of damaged or deteriorating explosives or detonators; or <br /> 2. Disposal of misfires and/or undetonated explosives; or <br /> 3. Firing of charged holes as soon as practicable after cessation where electricity or <br /> stray current conditions where electric detonators are used; or <br /> 4. Firing of charged holes when weather conditions indicate the existence of a safety <br /> hazard is eminent <br /> Colowyo gives warning and all-clear signals of different characters that are audible- within a <br /> range of one-half mile of the blast. Individuals within the permit area and individuals who reside <br /> or work within one-half mile of the mining area will be notified of the meaning of the signals <br /> through appropriate written instructions. Colowyo will periodically inform such individuals of <br /> the proposed blasting schedule and inform them of the meaning of the signals. Colowyo will <br /> also maintain signs in accordance with Section 4.02. <br /> Colowyo will regulate access into the area possibly subject to flyrock from blasting to protect <br /> the public and livestock. Fences are in place to keep livestock out of the mining areas. The permit <br /> area will be identified by signs on the access road restricting entry to authorized personnel. Signs <br /> will also be posted identifying the area as a blasting area and describe the warning and all-clear <br /> signals. Immediate access to the area of blasting will be cleared and controlled by qualified mine <br /> personnel prior to any blast. <br /> Colowyo will control air blast from its blasting operations within the permit area so it does not <br /> exceed the values specified by the chart set forth in Rule 4.08.4(6). The same design factors <br /> utilized to control the seismic effects of blasting (i.e.: the use of numerous surface delays to <br /> "spread"the shots out over time,particularly near residences)is also very effective in controlling <br /> airblast. Additionally, to keep airblast to a minimum Colowyo uses various other methods to <br /> ensure airblasts are kept in compliance. <br /> Colowyo will not conduct blasting within 1000 feet of any building used <br /> 4.08.4 Surface Blasting Requirements <br /> Colowyo will conduct all blasting operations during daylight hours between sunrise and sunset as <br /> set forth in the blasting schedule in Section 4.08.3. <br /> Warnings and notices of unscheduled blasting between sunset and sunrise that cannot be delayed <br /> until the next day due to unavoidable hazardous conditions will be provided in accordance with <br /> the requirements of this Section.- oral notices will be provided to residents or owners of dwellings <br /> within one-half mile of the blasting site within 24 hours prior to any blasting which might be <br /> conducted between sunset and sunrise.A complete written report of the blasting at night describing <br /> in detail reasons for delay in blasting, including- why the blast could not be held over for the next <br /> Rule 4 Performance Standards 4-26 Revision Date: 12/20/19 <br /> Revision No.: TR-135 <br />