Australian and New Zealand Environment and Conservation Council, 2000
Disposal of Residues
- All antifouling residues should be treated as contaminated wastes, as they are all contaminated with biocides. Such wastes are to be collected for disposal in accordance with requirements of local environmental and/or waste disposal authorities, and prevented from entering adjacent waterways.
- Keeping and disposal of tributyltin contaminated wastes may require special approval (eg. in NSW), and users should notify local environmental authorities.
- Contaminated wastes, of all types, should be kept in sealed containers.
- Antifouling paint residues should not be burnt owing to their potential high toxicity.
- Contaminated wastes, of all kinds, should be removed by licensed contractors who are advised of the type of the waste, and records should be kept of all such disposed wastes.
- Contaminated grit should be treated as antifouling waste and disposed of in the same way as antifouling paint residue.
- Biological materials (marine biota) removed from antifouled hulls, should be disposed of as solid waste in accordance with local requirements eg. to landfill.
- Liquid wastes are not to be poured into drains. All liquid wastes should be placed in suitable containers, sealed, and disposed of in accordance with local environmental and/or waste disposal authorities.
Where antifouling paints have been removed from old vessels (greater than 10 years old), it should be assumed that the paint residue contains tributyltin, unless test results prove otherwise, and the paint residue should be disposed of at the approved local landfill facility. Antifoulants removed from vessels constructed before the 1970's may contain a variety of extremely hazardous chemicals, including substances like arsenic, mercury and DDT, and should be disposed of at a local approved landfill facility in which leachates are contained.
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