[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.
