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VIBRATION ANALYSES <br />Vibration analyses were conducted using the data provided in review material item no.2 <br />and the site plan of the 4vastewater treatment facility developed from the site visit. The <br />estimated particle velocities and corresponding accelerations at each of the structures induced <br />by the three types of blasts (quarry, production, and access road) were determined using the <br />following equation: <br /> <br />Where: V=maximum peak particle velocity (inches per second) <br />K= ground transmissivity constant <br />R=distance to structure, (ft) <br />W=maximum pounds of explosive per delay period <br />Many dynamic and seismic loading analyses on structures are done in terms of the <br />acceleration of gravity (G's). In order to convert the peak particle velocities determined above <br />the following equation was used: <br />Accel.=2nvf/386.4 <br />Where: accel=particle acceleration (G) <br />V=maximum peak particle velocity (inches per second) <br />F= Frequency (Hz) -typically varies from 10 Hz to 100 Hz for quarry <br />blasting. <br />The accelerations were determined for each particle velocity using frequencies lOHz <br />and 100 Hz. <br />To determine the distances from the blasts to the various structures, the site plan <br />4 <br />