  CL451/82, USACOFE 19APR80 -- DUMPING GROUND ESTABLISHED WITH CENTER LOCATED AT 41/12/40.8 NORTH LATITUDE, 072/21/31.2 WEST LONGITUDE (NAD27).  THIS IS A 1 NAUTICAL MILE SQUARE WITH SIDES RUNNING TRUE NORTH-SOUTH, EAST-WEST.  FROM THE CENTER SAYBROOK BR