Rehabilitation of a 9-span (gutter to gutter connected) tunnel-type greenhouse with straight sidewalls of 4,860m² covered surface, including the rain gutter system, and the waterproofing of the ground storage tanks of about 530 cubic meters (530,000 liters). Provision and installation of all components for an operational hydroponic system for agricultural production of fresh leafy vegetables (e.g. lettuces) at the Natural Resource Development College (NRDC) in Lusaka, Zambia.