environmental impact assessment

ENVIRONMENTAL IMPACT IMP ACT ASSES ASSESSMENT SMENT TOOLS Presentation By Anusha Vytla(10EN05F Vytla(10EN05F)

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CONTENT      

Introduction The Leopold Matrix Description Identification Prediction Interpretation









Environmental Impact Assessment 

The International Association for Impact Assessment (IAIA) defines an environmental impact assessment as "the process of identifying, predicting, evaluating and mitigating the biophysical, social, and other relevant effects of development proposals prior to major decisions being taken and commitments made. “

The

of the assessment is to ensure that decision









Methods for Environmental Impact Assessment 

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Ad hoc methods are useful when time constraints and lack of information require that the EIA must rely exclusively on expert opinion.

Checklists and matrices and matrices are good tools for organizing and presenting information.









Matrices 

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Matrix methods identify interactions between various project actions and environmental parameters and components. They incorporate a list of project activities with a checklist of environmental components that might be affected by these activities. A matrix of potential









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One of the earliest matrix methods was developed by Leopold et al. (1971). In a Leopold matrix and its variants, the columns of the matrix correspond to project actions (for example, flow alteration) while the rows represent environmental conditions (for example, water temperature).











Types Of Matrices 

Matrices require information about both the environmental components and project activities. The









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Simple matrix methods simply identify the potential for interaction.









Leopold Matrix- Description 

The pioneering approach to impact assessment, the Leopold matrix, was developed by Dr. Luna Leopold and others of the United States Geological Survey (Leopold et. al., 1971). The









Leopold Matrix- Identification 

The Leopold matrix is comprehensive in covering both the physical-biological and the socio-economic environments. The list of 88 environmental characteristics is weak, however, from the









Leopold Matrix- Prediction 

The method can accommodate both quantitative and qualitative data.











Leopold Matrix- Interpretation &









Leopold Matrix- Inspection









Evaluation of Matrix Methods.











































environmental impact assessment

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