5.—(1) The registered holder of any contaminated equipment in respect of which an inventory is to be, or has been, made under regulation 9 shall affix to that equipment and to the doors of premises where such equipment is located an indelible sign and, subject to regulation 4(4)(d), shall take reasonable steps to secure that the sign remains so affixed while that equipment remains at that location.
(2) Subject to paragraph (3), such sign shall record that the equipment is, or the premises contain equipment that is, contaminated by PCBs.
(3) In the case of equipment in respect of which it is reasonable to assume that the content of PCBs in the fluid is between 0.05% and 0.005% by weight, the holder of that equipment may label that equipment as “PCBs contaminated < 0.05%”.