Oil balls of 1cm or larger found on the beach surface or within 10cms depth below the surface can be removed. Avoid locations where large stones are present. Take care to ensure that the machine's direction of movemen does not lead to it canting over on a sloping surface. Oil balls smaller than 1cm cannot be collected or removed. Collect the oil which is washed out by wave action as soon as this occurs.
Big waves result in better cleaning, but make it harder to control the operation.
The nets need to be tightly secured. Better results can be achieved when one side of the nets is allowed to float on the sea surface. The nets may break loose if the waves reach more than 2 metres in height. Relevant sections in the report also cover technical measures with respect to oil-collection as mentioned earlier. The information introduced on the internet site comprises extracts from this report.