Lexikon

contaminant concentration or level in the surface waters on the effect of discharge of contaminants or contaminating agents into surface waters.

discharge according to 76/464/EGK regulation means the introduction into the waters referred to in paragraph 1 of any substances in List I or List II of the Annex, with the exception of:
- discharges of dredgings,
- operational discharges from ships in territorial waters,
- dumping from ships in territorial waters.

List I:

1. organohalogen compounds and substances which may form such compounds in the aquatic environment,

2. organophosphorus compounds,

3. organotin compounds,

4. substances in respect of which it has been proved that they possess carcinogenic properties in or via the aquatic environment

5. mercury and its compounds,

6. cadmium and its compounds,

7. persistent mineral oils and hydrocarbons of petroleum origin,

8. persistent synthetic substances which may float, remain in suspension or sink and which may interfere with any use of the waters.

List II:

1. The following metalloids and metals and their compounds: Ag, As, B, Ba, Be, Cd, Co, Cr, Cu, Mo, Ni, Pb, Se, Sn, Te, Ti, Tl, U, V, Zn,

2. Biocides and their derivatives not appearing in List I.

3. Substances which have a deleterious effect on the taste and/or smell of the products for human consumption derived from the aquatic environment,

and compounds liable to give rise to such substances in water.

4. Toxic or persistent organic compounds of silicon, and substances which may give rise to such compounds in water, excluding those which are biologically harmless or are rapidly converted in water into harmless substances. (1)Where certain substances in list II are carcinogenic, they are included in category 4 of this list.

5. Inorganic compounds of phosphorus and elemental phosphorus.

6. Non persistent mineral oils and hydrocarbons of petroleum origin.

7. Cyanides, fluorides.

8. Substances which have an adverse effect on the oxygen balance, particularly : ammonia, nitrites.

Source: http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31976L0464:EN:HTML

environmental objectives laid down in Article 4(1) of WFD require Member States to prevent deterioration of the status of all bodies of surface water and groundwater and to achieve good status as a rule by 2015. In addition, pollution from priority substances has to progressively be reduced, emissions of hazardous substances shall be ceased or phased out, and any significant upward trend in pollution in groundwater has also to be reversed by appropriate measures.

sub-surface water, is fresh water located in the pore space of soil and rocks. It is also water that is flowing within aquifers below the water table. Sometimes it is useful to make a distinction between sub-surface water that is closely associated with surface water groundwater and deep sub-surface water in an aquifer sometimes called "fossil water".

Subsurface waters are generally polluted from the unsaturated soil layer beyond. Pipelines, underground containers, surface land-uses are the most frequent pollution sources. The contaminants in the subsurface waters may naturally attenuate due to dilution, chemical reactions or biodegradation. As the redoxpotential in the subsurface waters is relative low anoxic or anaerobic conditions, the biodegradation of pollutants is generally low, needs some enhancement by engineering/biotechnological tools to increase efficiency.

"surface water status" is the general expression of the status of a body of surface water, determined by the poorer of its ecological status and its chemical status.

"ecological status" is an expression of the quality of the structure and functioning of aquatic ecosystems associated with surface waters, classified in accordance with Annex V. of the Water Framework Directive (WFD), 60/2000/EC

"good surface water chemical status" means the chemical status required to meet the environmental objectives for surface waters established in Article 4(1)(a) of WFD (60/2000/EC) that is the chemical status achieved by a body of surface water in which concentrations of pollutants do not exceed the environmental quality standards established in Annex IX and under Article 16(7), and under other relevant Community legislation setting environmental quality standards at Community level.

"good ecological potential" is the status of a heavily modified or an artificial body of water, so classified in accordance with the relevant provisions of Annex V. of Water Framework Directive (WFD), (60/2000/EC).

"good ecological status" is the status of a body of surface water, so classified in accordance with Annex V. of WFD (Water Framework Directive), 60/2000/EC