
 SURVEY REQUIREMENT COMMENTS
  IF NOT VISIBLE, A 50 METER SWATH IS REQUIRED CENTERED ON EACH ì
PIER.

 HISTORY
  UNKNOWN SOURCE--TWO PIERS APPEARED ON CHART 11317 PRIOR TO 1980 ì
EDITION. POSITION SCALED FROM INSET OF CHART 11317 (1:20,000) AT ì
SE