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• Sketches of the blast pattern including number of holes, burden, spacing, decks, and <br /> delay pattern <br /> • Diameter and depth of holes <br /> • Types of explosives used <br /> • Total weight of explosives used per hole <br /> • The maximum weight of explosives detonated in an 8-millisecond period <br /> • Initiation system <br /> • Type and length of stemming <br /> • Mats or other protections used <br /> • Seismographic and air blast records to include: <br /> o Type of instrument, sensitivity, and calibration signal or certification of annual <br /> calibration <br /> o Exact location of instrument and the date,time, and distance from the blast <br /> o Name of the person and firm taking the reading <br /> o Name of the person and firm analyzing the seismographic record <br /> o The vibration and air blast level recorded <br /> • Reasons and conditions for each unscheduled blast <br /> Blast Monitoring Procedure <br /> All blast monitoring will be completed by a third-party blasting consulting firm that specializes <br /> in blast monitoring. As part of site's blasting plan, all blasts will be monitored using several <br /> methods. Blasts will be video recorded, if weather conditions permit. Microphone(s)will be used <br /> to measure air over pressure (air blast) and noise. Measurements will be taken at the closest <br /> significant structure (home, building,road, well, etc.). The site will utilize the OSM maximum <br /> peak particle velocity limits shown below in Table 3. All attempts will be made to keep peak <br /> particle velocities well below the proposed maximum allowable limits. <br /> Young Ranch Resource <br /> November 2020 20 Greg I. icki and Associates,PLLC <br />