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<br />TABLE OF CONTENTS <br />North Fork Valley Seismic Network -Third Quarter 2007 .........................................................................1 <br />Summary ..............................................................................................................................1 <br />Introduction ..................................................... ..................................................................... l <br />Network Operations ........................................ .....................................................................1 <br />Data Processing ............................................... .....................................................................2 <br />Identification of Events ....................... .....................................................................2 <br />Location Methodology ........................ .....................................................................3 <br />Magnitude Estimation ......................... .....................................................................3 <br />Results ............................................................. .....................................................................4 <br />Seismic Event Locations ..................... .....................................................................4 <br />Seismic Event Magnitudes .................. .....................................................................4 <br />Recorded Peak Ground Accelerations .....................................................................4 <br />Acknowledgments ........................................... .....................................................................5 <br />References ....................................................... .....................................................................5 <br />Tables <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 />r <br />Figures <br />1 Seismic Station Locations, Permit Areas, and Mine Location Map <br />2 Relocated Seismicity, 1 July to 30 September 2007 <br />3 PGA Values for Q3 2007 Shown With McGarr and Fletcher (2005) Attenuation <br />Relationship <br />~S W:UC_WCFS\PROJECTS\NORTH FORK-BOWIE\QUARTERLY REPORTS\2007 03\03_2007_BRL_FINAL.DOC\~ 2-FEB-08\\OAK 1 <br />