"DESCRIBED BY COAST AND GEODETIC SURVEY 1956 AT DUMBARTON BRIDGE. AT DUMBARTON BRIDGE, IN TOP OF THE CONCRETE CURB OVER BENT 117, 177.4 FEET SOUTHWEST OF THE NORTHEAST END OF THE BRIDGE, 177.0 FEET SOUTHWEST OF TIDAL 9, 11 1/2 FEET SOUTHEAST OF THE CENTER LINE OF THE BRIDGE, AND ABOUT 0.8 FOOT HIGHER THAN THE BRIDGE FLOOR." (
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