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14. Flyrock and Air Blast Control Plan <br /> Flyrock is defined as dirt, mud, stone, or fragmented rock that is propelled from the blasting area <br /> by the force of the blast. Flyrock is never expected in a blast,but due to the nature of explosives, <br /> it can happen. Flyrock can be minimized and eliminated by following the basic blasting <br /> guidelines below. Typically, air blast issues are directly related to the same issues a fly rock. An <br /> air blast is the detonation of explosive where the explosive's energy is not directed into the rock <br /> mass but is allowed to escape. The operator will adhere to these guidelines for all blasting <br /> completed on site. <br /> Proper blast pattern design will be used including proper burden and spacing based on hole size <br /> and efforts will be made to ensure there is adequate space in front of the pattern to allow <br /> fractured material to move horizontally. Proper blast hole loading and adequate hole quality will <br /> ensure explosive column height and stemming material heights meet calculated requirements for <br /> safety. Blast patterns will be set up so that the direction of the blast will be away from permanent <br /> manmade structures and away from adjacent permit boundaries. Appropriate blast pattern timing <br /> sequences will be used so the pattern is shot systematically and in proper order. <br /> 15. Documentation <br /> The third-party blasting contractor will prepare a paper record of each blast completed at the <br /> quarry site. Copies of each blast report will be kept on file in the scale house/office and the third- <br /> party contractor's office. All records, including blast statistics and blast monitoring, will be kept <br /> on file for a minimum of 3 years. The following information will be recorded: <br /> • The name of the operator conducting the blast <br /> • Location, date, and time of the blast <br /> • Name, signature, and certification number of the blaster <br /> • Identification, direction, and distance, in feet, from the nearest blasthole to the nearest <br /> significant structure outside the permit area <br /> • Weather conditions, including those which may cause possible adverse blasting effects <br /> • Type of material blasted <br /> Young Ranch Resource <br /> November 2020 19 /%nR Lwicki and swcixlrs 1,.1.1 <br />