| (B) If the Figure 1 limits are used, a seismographic
record, including both particle-velocity and vibration-frequency
levels, shall be provided for each blast. The method for the analysis
of the predominant frequency contained in the blasting records shall
be approved by the Commission before application of this alternative
blasting criterion.
(5) The maximum allowable ground vibration shall be
reduced by the Commission beyond the limits otherwise provided by
this section, if determined necessary to provide damage protection.
(6) The Commission may require an operator to conduct
seismic monitoring of any or all blasts or may specify the locations
at which the measurements are taken and the degree of detail necessary
in the measurement.
(i) The maximum airblast and ground vibration standards
of subsections (f) and (h) of this section shall not apply at the
following locations:
(1) at structures owned by the permittee and not leased
to another person; and
(2) at structures owned by the permittee and leased
to another person, if a written waiver by the lessee is submitted
to the Commission before blasting.
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