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TABLE OF CONTENTS <br />North Fork Valley Seismic Network -Second Quarter 2008 .....................................................................1 <br />Summary ..............................................................................................................................1 <br />Introduction ..........................................................................................................................1 <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 /> <br />References ............................................................................................................................ ~ <br />5 <br />Tables <br />1 Seismograph Stations of the North Fork Valley Seismic Network <br />2 Velocity Model Used in Locating Earthquakes <br />3 Event Locations and Maximum Recorded PGAs <br />Figures <br />1 Seismic Station Locations, Permit Area, and Mine Location Map <br />2 Relocated Seismicity, 1 April to 30 June 2008 <br />~S W:\X_WCFS\PROJECTS\WEST ELK-MTN COAL\2008 02\02_2008 MCC.DOC125-AUG-081\OAK 1 <br />