BP68332/1965; TWO SUBM PIPES USED AS ACOUSTIC RANGE HYDROPHONE MOUNTS (1000 YD STATION) FOR TORPEDO RANGE.  PILES LOCATED AT (NAD83) 47/41/25.45N, 122/36/36.71W & 47/41/25.85N, 122/36/34.57W.  HYDROPHONE DEPTHS RECORDED AS 27 FT & 28 FT. (LAH 3/17/2010)