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Steps in Cumulative Effects Analysis

Last Page Update: July 29, 2010

Steps in Cumulative Effects Analysis (CEA) in Each Component of Environmental Impact Assessment (EIA)   

EIA ComponentsCEA Steps

Scoping

1. Identify the significant cumulative effects issues associated with the proposed action and define the assessment goals.

2. Establish the geographic scope for the analysis

3. Establish the time fram for the analysis.

4. Identify other actions affecting the resources, ecosystems, and human communities of concern.

Describing the Affected Environment

5. Characterize the resources, ecosystems, and human communities identified in scoping in terms of their response to change and capacity to withstand stress

6. Characterize the stresses affecting these resources, ecosystems, and human communities and their relation to regulatory threshholds.

7. Define a baseline condition for the resources, ecosystems, and human communities.

Determining the Environmental Consequences

8. Identify the important cause-and-effect relationships between human activities and resources, ecosystems, and human communities.

9. Determine the magnitude and significance of cumulative effects.

10. Modify or add alternatives to avoid, minimize, or mitigate significant cumulative effects.

11. Monitor the cumulative effects of the selected alternative and adapt management.