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Tuesday, 06 May 2008

The coastal and estuarine sediments contain many substances, some of which are toxic said: heavy metals, polyaromatic hydrocarbons, organochlorines (PCBs), pesticides and biocides divers. Their dredging and dumping at sea poses the problem of mobility elements and toxic substances and their effects on living organisms. The process involved in the detention or release of contaminants associated with sediment are regulated to a large extent by the physical and chemical properties of the environment of the site of deposit, but also linked to microbiological activity in the sediment dredged. Particular attention is given to toxic contaminants, persistent and bioaccumulative.

The data REPOM, as well as data Ifremer on the quality of coastal waters, are integrated into the "Information System on Water" established by the MEDD from 2007.
 

The monitoring of port areas
The quality of water and sediment port is followed from measurements made pursuant to the circular dated 14 June 2000 and its technical training by the National Network for Surveillance of Maritime Ports (REPOM) operated by the cells of Water Quality Littorales. The analyses carried out under the circular concern only for sediment dredging, while the REPOM focuses on water and sediment from the port as a whole. By their complementarity these two devices allow managers to have a broader vision of the quality of aquatic environments port.

Follow-ups under the circular dated 14 June 2000 are part of the studies prior to any disposal operation of dredging. They aim to provide a representative picture of the site from the collection of data successive physical characterization, chemical and biological sediments. The technical instructions concerning the collection and analysis of dredging and annexed to the circular, indicate the sampling strategy, the parameters to analyze and standardized methods or recommended methods of restoration and interpretation of results .
Last Updated ( Monday, 30 June 2008 )
 
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