(A) A blasting log book shall be kept current daily and made available for inspection at the site by the city and upon written request by the public. The blasting log shall be retained by the operator for three years. The blasting log shall contain, at a minimum, but not limited to, the following information;
(1) Name of permittee, operator, company conducting blasting, and other person conducting the blast;
(2) Permit number, location, shot number, date and time of blast;
(3) Name, signature and certification number of blaster-in-charge;
(4) Identification of nearest protected structure and nearest other structure not owned or leased by the operator, and indicate the direction and distance, in feet, to both such structures;
(5) Weather conditions, including estimated wind direction and speed;
(6) Type of material blasted, including rock type and description of conditions;
(7) Describe different types and quantities of explosives used;
(8) Total weight of explosives used;
(9) Method of firing and type of circuit; and
(10) Seismographic records.
(B) Seismographic records shall be kept current as necessary and made available for inspection at the site by the city and upon written request by the public. Seismograph records and airblast records, when required, shall include but not be limited to:
(1) Seismograph and airblast reading, including exact location, trigger levels, date, time of reading, frequency in Hz, and its distance from the blast;
(2) Name of person who installed the seismograph; also name of person and firm taking the readings;
(3) Name of person and firm analyzing the record, where analysis is necessary; and
(4) Type of instrument, sensitivity, calibration signal, and certification of annual calibration.
(C) Reasons and conditions for unscheduled blasts, misfires, any unusual event, or violation of the blast plan shall be noted in the log.
(Ord. 2208, passed 8-7-23)