“Absolute” hazardous wastes are always
hazardous, whatever the concentration of the dangerous substances
in it. These wastes are marked in the Waste List Decision with an
asterisk (*), but the waste description next to the six-digit code does
not have a specific or general reference to “dangerous substances” in
the waste description. On the other hand, “absolute” non-hazardous
are wastes without an asterisk. Finally, waste can be either hazardous
or not, depending on whether it contains “dangerous substances”
at or above certain levels. This waste is covered by linked
(usually, but not always, two paired) 6-digit entries, called “mirror”
entries. These wastes have: