Andisols that have 1500-kPa water retention of <15 % on air dry <30 % on undried samples throughout 60% of the thickness either; a) within 60 cm of the soil surface or top of an organic layer with andic properties, whichever is shallower if there is no lithic, paralithic contact, duripan, or petrocalcic horizon within that depth, or b) between the mineral soil surface or top of an organic layer with andic properties, whichever is shallower and a lithic, paralithic contact, duripan, or petrocalcic horizon. (A suborder in the U. S. system of soil taxonomy).