"Discovery Park Marine Preserve" is defined as two sections of tidelands owned by the city of Seattle and the water column above those tidelands down to 4.5 feet below MLLW at Discovery city park, with a southern section located south of West Point bounded on the southeast by a line projected west-southwest from 122°25'31.7" W, 47°39'26.8" N and bounded on the northeast by a line projected west-southwest from the sign posted at the sidewalk entrance to the beach, and with a northern section bounded on the southwest by a line projected northwest from 122°25'20.7" W, 47°40'3.3" N and bounded on the northeast by a line projected northwest from 122°25'4.2" W, 47°40'11.1" N.