Environmental impact assessment; ecological risk assessment; environmental planning, management and consultations; geological, hydrogeological and geoecological investigation; geotechnical investigation; environmental quality monitoring; groundwater flow and contaminant transport modeling; design and operation of oil-polluted soil and groundwater treatment plants; design of water supply and sewerage systems; development of alternative energy projects; handling of hazardous waste included within this class (included development of hazardous waste management projects)