Environmental Impact assessment (EIA) is the assessment of the environmental consequences of a plan, policy, program, or actual projects prior to the decision to move forward with the proposed action. In this context, the term “environmental impact assessment” (EIA) is usually used when applied to actual projects by individuals or companies and the term “strategic environmental assessment” (SEA) applies to policies, plans and programmes most often proposed by organs of state.It is a tool of environmental management forming a part of project approval and decision-making. Environmental assessments may be governed by rules of administrative procedure regarding public participation and documentation of decision making, and may be subject to judicial review


ESIA is to ensure that potential problems are foreseen and addressed at an early stage in the projects planning and design. To achieve this the assessment finding are communicated through a ESIA report to all the groups who will make decisions about the proposed projects that is the project developers their investors, as well as regulating authorities, planners and politicians, So that the expected benefit can be sustained with minimum and acceptable adverse environmental impacts.