Annex III - Appendix

Annex III

1 Application

2 Packing

3 Marking and labelling

4 Documentation

5 Stowage

6 Quantity limitations

7 Exceptions

8 Port State control on operational requirements

Appendix - Guidelines for the identification of harmful substances in packaged form

Unified Interpretation

Annex III- Regulations for the Prevention of Pollution by Harmful Substances Carried by Sea in Packaged Form

Appendix to Annex III - Guidelines for the identification of harmful substances in packaged form

For the purposes of this Annex, substances identified by any one of the following criteria are harmful substances:

	-	bioaccumulated to a significant extent and known to produce a hazard to aquatic life or to human health (Hazard Rating "+" in column A*); or
	-	bioaccumulated with attendant risk to aquatic organisms or to human health with a short retention of the order of one week or less (Hazard Rating "Z" in column A*); or
	-	highly toxic to aquatic life, defined by a LC₅₀/96 hour^†; less than 1 ppm (Hazard Rating "4" in column B*).

* Refer to the Composite List of Hazard Profiles prepared by the IMO/FAO/UNESCO/ WMO/WHO/IAEA/UN/UNEP Joint Group of Experts on the Scientific Aspects of Marine Pollution (GESAMP), which is circulated annually by the Organization by means of BLG circulars to all IMO Member States.

† The concentration of a substance which will, within the specified time (generally 96 hours), kill 50% of the exposed group of test organisms. Also referred to as "96 h LC₅₀". LC₅₀ is often specified in milligrams per litre (mg/l) or parts per million (ppm).