Background Established in 1987, GCS (Pty) Ltd is an independent consultancy offering a range of professional services within the fields of water, environmental science and contaminated land. Our diverse range of services allows GCS to offer a unique and all-inclusive approach to projects in the mining, industrial, waste management, contaminated land, construction, infrastructure development and tourism sectors. Services GCS offers services in the fields of Contaminated Land, Environmental services, Environmental Engineering, Geology & Exploration, Geotechnical Engineering, GIS, Water and Water Use Management. Offices With offices in Johannesburg, Durban (South Africa), Gaborone (Botswana), Windhoek (Namibia), Lusaka (Zambia) and Ostrava (Czech Republic), GCS boasts international experience, which includes over 27 African countries.