The document provides details about environmental impact assessment (EIA) in Tanzania, including:
1. It defines EIA and discusses its historical background and use under different policies in Tanzania.
2. It describes the EIA process, including who carries it out, the key steps involved, and how the output is used.
3. It discusses the importance of EIA for decision making, public participation, and sustainable development, as well as some challenges of implementing EIA in Tanzania, such as costs and time requirements.