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Banks and Gesso, LLC <br />Blasting Procedures <br />Blasting at the site will comply with the Office of Surface Mining Blasting Guidance <br />Manual and other regulatory requirements. <br />Prior to any blasting, pre-blast surveys will be conducted for structures as determined in <br />consultation with the Division if the applicant is able to obtain consent from the owners to <br />conduct such surveys. If unable to obtain permission from these owners to conduct the <br />pre-blast surveys, the applicant will conform to the most stringent ground vibration <br />standards of the OSM. The pre-blast surveys will be used in the blasting design. <br />It is anticipated that blasting associated with the construction of the access road will be <br />of significantly less intensity than production blasting. Also, blasting required for the <br />construction of the processing/loadout site may be less intense than production blasting, <br />at least for the majority of construction of the site. Production blasting will commence in <br />year three when the quarry begins production. Drilling and blasting will occur at a rate <br />necessary to meet production goals. Once under full production, blasting will occur once <br />to twice per week. <br />Blast monitoring devices will be placed at appropriate locations. Records of each blast <br />will be kept on site by the mine manager and will include all required blast data (number <br />and depth of holes, charge weights, materials utilized, date and time of blast, and <br />monitoring records). Explosive materials will be stored in on-site containers approved by <br />the appropriate various agencies to protect against vandalism, theft, and accidental <br />explosion. <br />A standard is proposed for ground vibration due to blasting of 2 ips (inches per second) <br />peak particle velocity at the permit boundary. This standard will apply to all blasting <br />except for the main access road construction where such blasting takes place less than <br />500 feet from the south permit boundary adjacent to State Highway 119. Blasting in this <br />area will be minor compared to production blasting and care will be taken to insure <br />minimum ground vibration by using minimum charge weights per delay. The 2 ips <br />standard was proposed by the U.S. Bureau of Mines and is considered protective of <br />structures. <br />Clear Creek District Water Providers, LLC October 25, 2004 <br />MMRR Quarry 1 Q 03047 <br />