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TABLE OF CONTENTS <br />Section 1 North Fork Valley Seismic Network - Third Quarter 2007 ..............................................1 <br />Summary .............................................................................. <br />Introduction .......................................................................... <br />Network Operations ............................................................. <br />Data Processing .................................................................... <br />Identification of Events ............................................. <br />Location Methodology .............................................. <br />Magnitude Estimation ............................................... <br />Results ................................................................................. . <br />Seismic Event Locations .......................................... <br />Seismic Event Magnitudes ....................................... <br />Recorded Peak Ground Accelerations ..................... <br />Acknowledgments ................................................................ <br />References ............................................................................ <br />Figures .................................................................................. <br />Tables <br />...............................................1 <br />...............................................1 <br />...............................................1 <br />...............................................2 <br />...............................................2 <br />...............................................3 <br />...............................................4 <br />...............................................4 <br />...............................................4 <br />...............................................5 <br />...............................................5 <br />...............................................6 <br />...............................................6 <br />...............................................1 <br />1 Seismograph Stations of the North Fork Valley Seismic Network <br />2 Velocity Model Used in Locating Seismic Events <br />3 Event Locations and Maximum Recorded PGAs <br />Figures <br />1 Seismic Station Locations, Permit Areas, and Mine Location Map <br />2 Relocated Seismicity, 1 July to 30 September 2008 <br />3 PGA Values for Q3 2007 to Q3 2008 Shown With McGarr and Fletcher (2005) <br />Attenuation Relationships <br />0 <br />• <br />• <br />um W:\x_waPS\PROJECTS\North Fork-Bowie\Quarterly reports\2008 Q3\Q3_2008_BRL.doc\0AK 1