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airblast, it should be controlled so that it does not exceed the values specified below at <br /> any significant structure (home, building, etc) outside the permit area: <br /> Lower Frequency Limit of <br /> Measuring System. Hz Maximum <br /> su <br /> (3dB) Level in dB <br /> 0.1 Hz or lower - flat response' ......... . ...................... 134 peak <br /> 2 Hz or lower -- flat response........................................ 133 peak <br /> 6 Hz or lower -- flat response............... ......_...... 129 peak <br /> C-weighted, slow response ............... .. .. ........ 105 C <br /> For ground vibration, the maximum peak particle velocity should not exceed the <br /> following limits at any significant structure (home, building, etc.) outside the permit <br /> area: <br /> Distance(D) Maximum Allowable Sealed-Distance <br /> frtxn the Blasting Sitc Peak Particle Factor to be <br /> (in feet) Velocity (V max) Applied without <br /> for Ground Vibratum Seismic Monitoring <br /> (in inehes/secondH) (Del) <br /> 0 to 300 1.25 50 <br /> 301 105000 1.00 35 <br /> 5001 and beyond 0.7� 65 <br /> 1{ Ground velocity shall be measurc.i a. the particle velocity. Peak <br /> particle velocities ill be recorded in three mutually perpendicular <br /> directkms from the blasting site. The mazunum peak parmic velocity <br /> shall be the largest of any of the three mcarerncnts. <br /> The Applicant shall provide an appropriate demonstration that offsite areas will not be <br /> adversely affected by the proposed blasting operation in accordance with Rule 6.5(4). <br /> The Preliminary blasting plan is included in Appendix 3 and details the effect of blasting to <br /> offsite areas. <br /> Other Permits and Licenses (Rule 6.3.6) <br /> 43. Pursuant to Rule 1.6.2(2),please demonstrate that the Applicant's response to these <br /> adequacy issues have been placed with the application materials previously placed with <br /> the County Clerk or Recorders Office, and made available for public review. <br /> A letter signed by the County Clerk's Office will be submitted to the Division as it is received. A <br /> copy of this Preliminary Adequacy Response was sent to the Huerfano County Clerk's Office at <br /> the same time this response was delivered to the Division. <br /> Bradford Mesa-Preliminary Adequacy Response 12 <br />