3.3.4 Declaration of impurities
Unless specifically exempted, GADSL listed substances known to be present as impurities (i.e.
not intentionally added), and which exceed the GADSL applicable content threshold, should be
considered to be declarable. In some cases, specific clarifying remarks are provided where well
known issues exist with impurities – e.g. see the entry for 'Arsenic and its compounds', where a
separate threshold is set for arsenic impurities in metals and alloys. Particular attention should be
paid to heavy metal impurities, e.g. regulated by the End-of-Life vehicles legislation,
(2000/53/EC).