The document discusses environmental impact assessment (EIA) and its integration with environmental management systems (EMS). It provides background on EIA, including its origins in the National Environmental Policy Act of 1969, the tiered approach to assessments, and methods used in EIA like impact prediction and evaluation of alternatives. EIA aims to anticipate impacts of new projects at the planning stage, while EMS helps manage ongoing environmental impacts during construction and operation. The two tools are complementary and their integration can strengthen environmental protection.