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Transit Mix Concrete Co. <br /> 0 <br /> f. Type of material blasted <br /> g. Sketches of the blast pattern including number of holes, burden, spacing, and delay <br /> pattern <br /> h. Sketches shall also show decking, if holes are decked to achieve different delay times <br /> within a hole <br /> i. Diameter and depth of holes <br /> j. Types of explosives used <br /> k. Total weight of explosives used per hole and maximum weight of explosives used per <br /> 8-millisecond period <br /> 1. Initiation system <br /> in. Type and length of stemming <br /> n. Mats or other protections used <br /> o. Type of delay detonator and delay periods used <br /> p. Number of persons in the blasting crew <br /> q. Reasons and conditions for each unscheduled blast <br /> Additionally, please commit to maintaining the following information, at minimum, for <br /> seismographic and airblast records: <br /> r. Type of instrument, sensitivity, and the calibration signal of the <br /> gain setting or certification of annual calibration <br /> s. Exact location of instrument and the date, time and its distance <br /> from the blast <br /> t. Name of the person and firm taking the reading <br /> u.Name of the person and firm analyzing the seismographic record <br /> v. The vibration and/or airblast level record <br /> Response: Transit Mix confirms that the blasting reports will contain all the requested <br /> information. The Blasting Plan has been revised to more clearly state that these items will <br /> be included on the blasting reports. <br /> Hitch Rack Ranch Quarry(M-2017-049) <br /> Response to Comments—March 9,2018 <br />