Environmental impacts of practices and conditions of road deicing products storage

摘要

CEREMA has initiated a study about the environmental impact for practices ofstorage and use of sodium chloride used for road de-icing in winter. Theexperimentation is located in the Centres d’Entretien et d’Intervention, DirectionInterdépartementale des Routes Nord (CEI DIR Nord) near Lille (France).Two sites have been selected to survey over 4 years the impact of storage propertieson water, soil and plants. A piezometers network has been installed for groundwatermonitoring. It’s been designed to take water and soil samples four times a year toconsider seasonal variations.Inventory of fixtures has been made a first year. The first results show the influenceof de-icing storage on chloride concentrations in environments (water, soil and flora).They also indicate the importance of seasonal variations.The perspectives of this study are :1. sites monitoring the sites over 4 years,2. data collection and analysis, including correlation with data of road managers,weather, winter activity (number of shipments, replenishment,…)3. good practices identification and effect on environmental propertiesassessment (performing tests on-site equipped),4. halophytic plants identification for revegetation of storage sites but alsopossibly to limit the impact on soil and water through retention property ofcertain plants.