(a) A blasting log book formatted in a manner prescribed by the City Engineer shall be kept current daily and made available for inspection at the site by the Engineer and upon written request by the public.
(b) The blasting log shall be retained by the operator for three years.
(c) The blasting log shall, at a minimum, contain the following information:
(1) Name of permitted, operator or other person conducting the blast;
(2) Location, date and time of blast;
(3) Name, signature and certification number of blaster-in-charge;
(4) Identification of nearest structure not owned or leased by the operator and direction and distance, in feet, to such structure;
(5) Weather conditions;
(6) Type of material blasted;
(7) Number of holes, burden and spacing;
(8) Diameter and depth of holes;
(9) Types of explosives used;
(10) Weight of explosives used per hole;
(11) Total weight of explosives used;
(12) Maximum weight of explosives detonated within any eight millisecond period;
(13) Method of firing and type of circuit;
(14) Type and length of stemming;
(15) If mats or other protections were used;
(16) Type of delay detonator used and delay periods used;
(17) Seismograph records and air blast records shall include but not be limited to:
A. Seismograph and air blast reading, including exact location, date and time of reading and its distance from the blast;
B. Name of person and firm taking the readings;
C. Name of person and firm analyzing the record, where analysis is necessary;
D. Type of instrument, sensitivity and calibration signal or certification of annual calibration;
(18) Shot location;
(19) Sketch of delay pattern to include the entire blast pattern and all decks; and
(20) Reasons and conditions for unscheduled blasts.
(Ord. 1941. Passed 2-19-98.)
Next Doc