
 HISTORY
  H9646/76-77--OPR-503-UNREVIEWED; 20FT OBSTR REP, NOT DEVELOPED, ì
WAS LOCATED ON MAINSCHEME HYDRO IN SURROUNDING DEPTHS OF 20-28FT. ì
POS REPORTED BELOW IN LNM.
  LNM42/90(10/17/90)--1ST CGD; 20FT OBSTR REP, POS GIVEN IN ì
LAT 41-27-33.4N,