(a) No person shall detonate an explosive device in the City without arranging and having present a seismologist retained by the Director of Public Safety or his or her authorized representative at each and every blast to record data produced by the same, as set forth in subsection (b) hereof.
(b) The Director may, from time to time, retain the services of a seismologist consultant for the purpose of carrying out the requirements of this chapter. The duties of such person shall include, but not be limited to, recording the following data as to each use of an explosive device of which he or she is notified:
(1) The identification of the instrument used;
(2) The name of the observer;
(3) The name of the interpreter;
(4) The distance of the recording station from the area of detonation;
(5) The recording station or the location of the recording station in the structure;
(6) The maximum amplitudes for all components measured;
(7) The frequency of ground motion in cycles per second, if applicable;
(8) The maximum particle velocity for all components measured; and
(9) The maximum sound pressure level.
(c) Written notice of the exact time and place of the use of an explosive device shall be given to both the Director and the seismologist at least forty-eight hours before such an explosion is detonated. Any seismologist retained by the Director or his or her designee shall attend all such detonations on the date and at the time and place when so notified. The seismologist shall issue written reports on each and every blasting event to the Director and shall indicate whether or not there was compliance with regulations and standards herein established. The seismologist shall have such other duties and responsibilities as shall be assigned to him or her by the Director or the Fire Chief and shall be paid from the per diem deposit fee required by Section 1386.04. The Director of Finance is hereby authorized and directed to cause payment to be made to the seismologist from such deposits upon the presentation of invoices therefor, chargeable to the respective deposit to which the invoice is applicable, and upon the approval of such invoices by the Director of Public Safety or the Fire Chief.
Postponement of a blast for good cause, when approved by the Fire Chief, shall not result in an additional permit being required for the rescheduled blast, but the blaster shall comply with the notice and requirements of this subsection in such event.
(Ord. 1988-29. Passed 9-12-88.)