4. If a qualifier refers to a specified depth range throughout (e.g. Calcaric),
additional subqualifiers can be constructed with the following specifiers:
Epi- (from Greek epi, over): the characteristic is present throughout between
the (mineral) soil surface (or the specified upper limit) and 50 cm from the
(mineral) soil surface and is absent in some layer between 50 and 100 cm
from the (mineral) soil surface.
Endo- (from Greek endon, inside): the characteristic is present throughout
between 50 and 100 cm from the (mineral) soil surface or between 50 cm
from the (mineral) soil surface and continuous rock, technic hard material
or a cemented or indurated layer, whichever is shallower, and is absent in
some layer ≤ 50 cm from the (mineral) soil surface.