Environmental Impact Assessment (Eia)

2101 Words Oct 17th, 2011 9 Pages
Environmental Impact Assessment (EIA): * A formal process to predict the environmental consequence of human development activities and to plan an appropriate measure to eliminate or reduce the adverse impacts and to augment positive impacts. * EIA is an attempt to identify measure and evaluate the environmental impacts of a course of actions. Here, actions mean any development, strategy which will change an existing system. * According to LGED, assessment of beneficial and adverse change in the environmental resources or values, resulting from any proposed project.
Methods available for conducting EIA study are: * Checklist method * Matrix method * Overlays method * Network diagram method * Baseline studies *
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The matrix comprises the environmental components found in a given study area, listed along both axes of the matrix: the cells then represent possible linkages between the components. This is illustrated in Figure . The analyst codes those cells where a direct link exists a "1", the other cells have a "0". On multiplying the matrix by itself, the resultant matrix indicates those components that can be reached within one (direct link) or two (indirect link) steps from another component. Further matrix multiplication can identify 3-, 4-, 5-step links between the environmental components.

Table: Descriptive system model components | Dependent Components | Type of Dependency | 1.Rotted vegetation | Plant detritusBenthic faunaEstuarine fishAvifauna | Source of nutrientsNutrientsNutrientsNutrients |
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