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RULE 4 PERFORMANCE STANDARDS <br /> <br />Rule 4 Performance Standards 4-26 Revision Date: 4/9/25 <br /> Revision No.: MR-261 <br /> <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 /> <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 /> <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 /> <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 /> <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 /> <br />Colowyo will not conduct blasting within 1000 feet of any building used <br /> <br />4.08.4 Surface Blasting Requirements <br /> <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 /> <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