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The certified blaster in charge of the blasting operation will physically barricade or block all access roads into the blasting area, check the entire blast area for unauthorized persons or livestock, then give instructions to sound the warning signal of an impending blast. After the shot has been fired, the all-clear signal will be given upon instructions from the blaster after the blast site has been inspected for any potential hazards. All drilling, loading, and blasting of drill holes will be performed in accordance with the Colorado State Coal Mining Laws (Article 10, Section 2 and Article 11, Sections 1-12), Mine Safety and Health Act (30 CFR 77.1300-77,1304), Federal Bureau of Alcohol, Tobacco and Firearms (ATF), Internal Revenue Service (Title 26, Part 181, Commerce in Explosives), and Western Fuels-Colorado safety rules and regulations. Blasting Limitations Air-blast. Electric blasting caps, noiseless NONEL or equivalent detonating equipment, and various delay systems will be utilized to reduce airblast effects and noise. Airblast will not exceed the limits in Table 2.05.3(6)(a)-1 at the location of any dwelling, public building, school, church, or community or institutional building outside the permit area except at such structures owned by WFC Ground Vibration. WFC uses numerous seismograph monitors that are located off/on site at nearby locations (homes, buildings, utilities, etc) to record the ground vibrations (in/sec) in the three planes (Longitudinal, Transverse, Vertical). Where appropriate, these same seismographs also record the air pressure change {dbL) caused by the blast at the same locations. After each blast, the seismographs are downloaded and the information is printed and analyzed. The information is then used to formulate a new blast scale distance factor as well as to judge the shot as being inlout of compliance. For this permit, WFC will use the Maximum Peak Particle Velocity (PPV) vs distance table located in Table 2.05.3(6)(a)-1 to judge the ground vibrations for compliance purposes. The maximum allowable air blast limits WFC will use for compliance judgement can also be viewed in Table 2.05.3(6)(a)-1. Flv-Rock. Stemming is loaded into blast-holes prior to detonation to substantially reduce the occurrence of fly rock. The depth of stemming will be designed such that the fly rock, which • may result from blasting operations, shall not be cast from the blasting site more than one-half (aevteea iz xov zooz~ 2.05.3(6)(a) 7