  H9862--  1989;  ADDED 18 FOOT OBSTRUCTION.  (ENTERED CEH 5/2007)
  F00541, OPR-N396-NRT3-07; Revise position and depth of charted obstruction based on survey findings, 21ft, 47-33-02.1N, 122-39-33.6W   (Updated 10/2/09 KAK)