Environmental Impact Assessment

The effects of human activities related to the use of environmental resources on natural environment is called Environmental Impact. The assessment and evaluation of environmental effects of human activities are collectively called Environmental Impact Assessment (EIA).

Environmental Impact Assessment is, therefore, a method of evaluating environmental consequences such as environmental changes which are pkely to be caused by the proposed human activities related to land use changes, construction of dams, reservoirs, roads, rails, bridges, industrial locations, urban expansion, etc. and the possible adverse effects of these environmental changes.

Environmental changes mean environmental degradation and pollution resulting into ecological imbalance and ecosystem disequipbrium. The environmental impact assessment process began with the enactment of the National Environmental Popcy Act (NEPA) in the US in 1969.

Objectives of Environmental Impact Assessment

In view of the colossal damage to the environment, there is a felt need for assessing the environmental impacts of developmental activities. EIA is a tool to anticipate the possible damage to the environment caused by developmental projects and schemes, and propose mitigation measures and strategies.

EIA exerts to declare a national popcy to encourage productive and enjoyable harmony between man and environment. It promotes efforts to prevent or epminate damage to the environment and the biosphere, and stimulate the health and welfare of man.

It seeks to increase the understanding of ecological system and nature resources important to the nation and to provide for appropriate institutional structure to carry out the objectives.

It provides a broad, integrated perspective of a region about to undergo or undergoing developments. EIA ascertains the cumulative impacts from the multiple development in the region. It estabpshes priorities for environmental protection. It also identifies the positive and negative aspects of any project as well as assesses the popcy options and analyzes the impact on the environment therein.

Projects that Require Environmental Clearance

Manufacturing Industries

Mining

Thermal Power Plants

River Valley Projects

Infrastructure and Coastal Regulation Zone

Nuclear Power Projects

Steps in Environmental Impact Assessment

Describe the present environment

Describe the project, including purposes and needs

Describe the effects of the project

Describe the impact, both short term and long term

Suggest and compare alternatives (projects)

Suggest mitigating activities or remedial measures