environmental impact assessment methodology
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Environmental Impact Assessment(EIA)
Methodologies
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EIA MethodologiesAd hoc MethodsCheck ListOverlay MethodMatrix MethodNetwork Method
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Ad hoc Methods A good example of an ad hoc method is a team of experts
assembled for a short time to conduct an EIA. Each expert's conclusions are based on a unique combination of experience, training and intuition.
Drawbacks the criteria used to evaluate impacts are not comparable, the
relative weights of various impacts cannot be compared; it is inherently inefficient as it requires sizeable effort to identify
and assemble an appropriate panel of experts for each assessment; and
it provides minimal guidance for impact analysis while suggesting broad areas of possible impacts
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Check List
Simple Checklist: a list of environmental parameters with no guidelines on how they are to be measured and interpreted.
Descriptive Checklist: includes an identification of environmental parameters and guidelines on how to measure data on particular parameters.
Scaling Checklist: similar to a descriptive checklist, but with additional information on subjective scaling of the parameters.
Scaling Weighting Checklist: similar to a scaling checklist, with additional information for the subjective evaluation of each parameter with respect to all the other parameters.
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Matrix Method
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Network Method
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Overlay Method
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Reference:
Methods for EIA ( Author: Unknown; December 1997)
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Thank You………