
 SURVEY REQUIREMENT COMMENTS
  THE 500M SEARCH RADIUS IS SPECIFIED AS A GUIDE TO DETERMINE ì
EXTENT OF FEATURE. OBTAIN LEAST DEPTH ON THE MOST SIGNIFICANT ì
CONTACTS.

 HISTORY
  H6445/39--51 FT SOUNDING OBTAINED IN POS. LAT.41-23-14.77N, ì
LONG.71