In reply to TheDrunkenBakers:
would you include a teaspoonful of gully sweepings in your fish stock. feel free to look up the term bioaccumulation and biomagnification and any of the following; Poly aromatic hydrocarbons , Persistent organic pollutants, Organo-chlorine compounds, methyl-murcury, Stockholm convention 1972 (Annex a,b,c), PCBS, Heavy metals. Pick anything, plastics are also an issue for the environment and human health. (you don't have to use wiki, add pdf and date on the end of the search and find yourself some articles)
PCBs and PCTs haven't disappeared because of the legislation. They are persistent long lasting stable compounds and there are 100's of thousands of sites across the uk with contaminated land and water from current and historical pollution of any type.
The UK is not expected to achieve water quality standards for inland waters for the Water Framework directive until 2035 due to the complex nature of dealing with the legacy of our industrial pollution issues.
Some cutting and pasting.
This is quite informative
http://www.pops.int/documents/guidance/beg_guide.pdf (UNEP)
http://ec.europa.eu/environment/chemicals/reach/reach_en.htm (European Union)
Directive 96/59/EC on the disposal of PCBs and PCTs aims at disposing completely of PCBs and equipment containing PCBs as soon as possible. The PCB Directive further mandates that Member States had to dispose of big equipment (equipment with PCB volumes of more than 5 litres) by the end of 2010 at the latest. The Commission will verify the implementation of this provision.
If they were in the environment 5 years ago they are likely to be there now as there is no viable cost effective methods to clean up abandoned sites, in water or on the land.
Polychlorinated Biphenyls (PCBs) are among a group of man-made chemicals that are known as Persistent Organic Pollutants (POPs). PCBs were commercially produced world-wide on a large scale between the 1930s and 1980s. Given their extraordinary chemical stability and heat resistance, they were extensively employed as components in electrical and hydraulic equipment and lubricants. They have been used in two types of applications:
Closed uses: dielectric fluids in electrical equipment such as transformers, capacitors (big industrial capacitors, but also small capacitors in household electrical appliances), heat transfer and hydraulic systems.
Open uses: as pesticide extenders, sealant, carbonless copy paper, industrial oils, paints, adhesives, plastics, flame retardants and to control dust on roads.
sorry i came over like i was ranting at you, that was not my intention
Post edited at 09:25