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,~ TABLE OF CONTENTS <br />_, <br />EXECUTIVE SUMMARY ............................................................................................1 <br />I. PRE-BLAST INSPECTIONS .....................................................................................2 <br />PURPOSE ...........................................................................................................2 <br />PROCEDURE ...................................................................................................2 <br />.. II. GROUND VIBRATION AND AIRBLAST TEST ................................ ...................4 <br /> PURPOSE ...................................................................................:.... ...................4 <br /> PROCEDURE ................................................................................. ...................4 <br /> THE SEISMOGRAPH .................................................................... ...................5 <br />~ EXPECTID GROUND VIBRATION LEVELS ........................ <br />.... <br />.................. 6 <br /> HUMAN PERCEPTIBII.TTY TO VIBRATIONS .......................... ...................8 <br /> STRUCTURAL RESPONSE TO VIBRATIONS .......................... ...................10 <br /> RECOMMENDED VIBRATION LIIvIITS ..................................... ..................13 <br /> RESEARCH ON REPEATID VIBRATIONS ............................... ..................15 <br /> WATER WELLS .............................................................................. ..................16 <br /> RECOMMENDID AIRBLAST LEVELS ...................................... ..................18 <br /> EXPECTED AIItBLAST LEVELS ................................................. ..................19 <br />,. <br />• <br />CONCLUSION ................................................................................ <br />..................21 <br /> APPENDD{ A (SEISMOGRAPH RECORDS) ........................................... ..................22 <br />APPENDD{ B (SEISMOGRAPH LOCATION MAP) ..................................................23 <br />~• <br />:. <br />~_ <br />i <br />., <br />