 HISTORY
  H-9167/70-- LOG BOOM FEATURE SHOWN,  SEAWARD EXTENT OF FEATURE IS IN POS.47-35-22.27 N  122-22-43.07 NAD 83. W. DASHED LINES SHOWN THE CHART ARE LOGS TIED TO DOLPHINS.
FOO468/2000--OPR-N411-NRB; NOT INVESTIGATED
  H11605: OPR-S-N912-NRT3-06