(a) Blasting operations shall be conducted in a manner so that ground vibrations measured at the nearest structure or building, except high-tension lines, supporting towers and appurtenances, do not exceed a peak particle velocity of two inches per second or its equivalent on any of the three mutually perpendicular planes of motion (i.e. vertical, longitudinal or transverse) and so that noise levels do not exceed a sound pressure level of 130 dB peak. No blasting operation will be permitted adjacent to any structure which the Fire Chief or the seismologist may deem hazardous.
(b) A record of the seismic wave pattern shall be kept by the seismologist for a minimum of three years after completion of the project and the same shall be filed in the permanent records of the Director of Public Safety.
(c) No blasting shall be permitted unless the seismologist is present.
(d) When the characteristics or environment of any specific blasting event have been determined to be extraordinarily hazardous by the seismologist and/or the Fire Chief, additional safety precautions may be lawfully required. The permittee shall be advised of the nature of such extraordinary hazard and instructed as to what specific additional safety requirements are required.
(e) Whoever violates any of the provisions of this section is guilty of a misdemeanor of the first degree for each offense. A separate offense shall be deemed committed each day during or on which a violation occurs or continues. The penalty shall be as provided in Section 698.02.
(Ord. 186-88. Passed 6-6-88.)