PUBLIC MARKETS : Assistance to the contracting authority : advise or environmental study adapted to towns and territorial collectivities. Chief engineer (studies and works monitoring) in a grouping with specialized study offices (social housing, eco-districts, integrated development zone...). Design and execution of wastewater treatment plants or fabrics of drinkable water in a grouping with treatment of water and civil engineering firms. PRIVATE MARKETS : Assistance to the contracting authority : advise or study for the environmental restoration of industrial buildings, housing estate, offices... Chief engineer (studies and works monitoring) : eco-building of industrial buildings, logistic zones, bioclimatic family houses.