[Code 1985 § 15-196; Code 2005 § 42-181]
As used in this article, the term "contractor" shall mean the person who obtains the permit required by this article.
[Code 1985 § 15-197; Code 2005 § 42-182]
Any person who uses explosives within the corporate limits shall obtain a permit for each day of blasting, not less than 24 hours but not more than 48 hours before such blasts, excepting Saturday, Sunday and holidays.
[Code 1985 § 15-198; Code 2005 § 42-183]
The contractor shall file with the City Clerk a performance bond of a form approved by the City Attorney that guarantees that such contractor will fully comply with the terms of this article. The performance bond shall remain in effect throughout the statute of limitation period, and the surety on the bond shall guarantee that the contractor carries insurance sufficient to hold the City and its officials harmless.
[Code 1985 § 15-199; Code 2005 § 42-184]
A. 
Blasting operations shall be so conducted that ground vibrations measured at the nearest structure or building, which is neither a quarry nor contractor-owned or contractor-leased, do not exceed a peak particle velocity of two inches per second or its equivalent of any of the three mutually perpendicular planes of motion, vertical, longitudinal or transverse.
B. 
Instrumentation that measures and records seismic phenomena, acceleration or displacement shall be adequate to furnish seismic wave patterns and data which can be connected to a statement of peak particle velocity. Such instrumentation shall be in use and operating correctly at the time each blast occurs; a copy of all records shall be furnished to the City engineer and the original preserved by the contractor for a period of time equal to the statute of limitations on blast damage.
C. 
The minimum seismic records to be recorded shall consist of the following:
(1) 
Identification of all instruments used, complete with serial number.
(2) 
Name of and signature of observers.
(3) 
Name of and signature of interpreter.
(4) 
Distance and direction of recording station from area of detonation.
(5) 
Type of ground at recording station or location in structure.
(6) 
Maximum amplitudes for all components measured.
(7) 
Frequency of ground motion in cycles per second, if applicable.
(8) 
Maximum particle velocity for all components measured.
[Code 1985 § 15-200; Code 2005 § 42-185]
A. 
The use of explosives for blasting shall be limited to the following quantities:
Distance in Feet From Blast Area to Nearest Structures
Maximum Quantity in Pounds Per Shot for Instantaneous Firing, or Per Delay, for Delay Firing
50
1.00
60
1.44
70
1.96
80
2.56
90
3.24
100
4.00
150
9.00
200
16.00
300
36.00
400
64.00
500
100.00
600
144.00
700
196.00
800
256.00
900
324.00
1,000
400.00
B. 
When ground characteristics for any specific blasting location have been determined by an independent seismologist, who has computed the allowable quantity-distance relation between the amount of explosives used and the distance from the blast site and who has filed a copy of his computations and recommendations with the City engineer, the quantities of explosives may be increased above the amount given above so long as such amounts do not exceed the amounts recommended by the seismologist.
C. 
The contractor shall determine to his own satisfaction that the seismologist is qualified to make valid recommendations and the acceptance of such recommendations from the seismologist by the contractor shall not relieve such contractor from any responsibility for blast damages.
[Code 1985 § 15-201; Code 2005 § 42-186]
Explosives used in connection with blasting shall not be kept within the City overnight. After each day's blasting operations, blasting contractors shall remove all explosives from the corporate limits and the explosives shall not be returned until the next day's blasting operations, and then shall be stored in a safekeeping vault complying with all federal and City requirements.