Saturday, April 18, 2015

The rain that falls on the airport share two watersheds: one runs its waters to an outlet that disc


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In this case, citizens and associations biochemistry that represent them are facing enormous economic machinery and are confronted with access to information difficulties, legislation not adapted to the use (and rejection) of relatively new chemical compounds, as well as a variety of arrangements or negligence that allow pollution associated with human activities endanger ecosystems and human health. Pollution ethylene glycol upstream of the drinking water treatment plant Annet-sur-Marne is emblematic battles we must wage in defense of the environment.
The Paris-Charles de Gaulle Airport is one of the largest airports in the world by its traffic, which exceeds 60 million passengers per year, ranking 7th in the world rankings. This equipment has the largest land area in Europe, with 3,400 hectares. The special feature of this airport is to include numerous impermeable surfaces (runways, taxiways and aircraft parking areas airplanes, airports, technical buildings biochemistry and other parking lots for cars, road network). These areas account for a third of the area of the airport, more than 1,000 hectares.
The rain that falls on the airport share two watersheds: one runs its waters to an outlet that discharges into the Seine, the other on an outfall that discharges water towards the Marne, via the river Beuvronne shortly before the pumping station of drinking water plant Annet-sur-Marne. This represents approximately 90% of discharges from the airport. Now the drinking water plant of Annet-sur-Marne, will by Veolia Water distributes products to nearly 500 000 people, including 350,000 Seine-et-Marnais and in some communes Seine Saint-Denis and Val-d'Oise.
Winters lead to defrost action tracks and planes. The products used are harmless to the environment, including the human being is a part. These chemicals are stored - with rainwater (and sleet) that cleans impermeable surfaces - in retention basins supposed retain the time required for product degradation. But their ability contention is not sufficient in case of harsh winters and heavy rains, in which case the repeated oil changes are effected without compliance with required deadlines. Now these "exceptions" are common.
When the association Green Actions Roissy Val Maubuée (AVRVM) biochemistry launched a "glycol alert", co-signed by the chairman of the new agglomeration Union (SAN) of Val-Maubuée, the President of the urban community of Brie Francilienne and Vice-President of the General Council of Seine-et-Marne, in 2011, and she hired a reflection on the origin and the risk of this contamination. This alert reflected concerns that had lasted since Veolia had revealed in its 2009 report, the presence of ethylene glycol in its analyzes taking raw water from the plant Annet-sur-Marne.
Indeed, in June 2010 Veolia Water has produced the results of analyzes of the 16 self-ethylene glycol setting, in which a maximum value of 0.7 mg / liter was given for 2009. It stated that those results concerned the raw water, ie, ie captured by the plant in the Marne.
These concerns are legitimate, were justified by the toxicity of ethylene glycol ingestion, even as the prefecture of Seine-et-Marne authorized * Paris Airport (ADP) to increase the flow of storm water discharges from Roissy airport, located 11 km as the crow flies from the water purification plant. And, before biochemistry it has been made a study of the degradability of this compound in water. Indeed, ADP has never carried out detailed analysis of different types of glycol in water basins.
* Interpréfectoral Decree No. 08 / DAIDD / E / 049 of 20 November 2008 amending the order interpréfectoral 97 DAE 2 E 020 of 3 April 1997, as extended by Order No. 07 / E 52 DAIDD authorizing Aéroports de Paris to exploit the storm water system of the airport biochemistry hub at Paris-Charles de Gaulle, published in the Collection of Administrative Acts of the Seine-et-Marne Prefecture No. 49 of 3 December 2008
In the case of ADP in 2008, we find the usual elements and identification of the following glycols: biochemistry "de-icing aircraft is made with propylene glycol in threshold (...); treatments airplanes biochemistry at the sta posts

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