RNAV (RNP) Z RWY 31L, AMDT 1B...
RNP 0.30 DA 1034/HAT 453 ALL CATS. VIS 1 3/8 ALL CATS.

CRANES, UP TO 731FT MSL, 4852FT EAST OF APCH END RWY 31L

(2017-ASW-3298 THRU 3301-NRA).