Building and construction services; roading services; construction, maintenance, installation, supervision, and repair of buildings, roads, tunnels, walls, bridges, transport infrastructure, barriers, and other constructions; excavation and earthworks; maintenance of stormwater, waste water, and water supply facilities and installations; remediation of contaminants in soil and groundwater (cleaning services); Maintenance of parks, paths, cycleways, public facilities, and streetworks; quarrying services; Project management in relation to the aforesaid services; Contract administrations and contract supervision services in relation to building and construction services; project and process management services in relation to the aforesaid services; consultancy, advisory and information services relating to the foregoing including via the Internet.