Which practice in EIA is used to systematically compare potential impacts across various project types?

• A. Field surveys
• B. Checklists or matrices
• C. Economic analysis
• D. Public hearings

Answer: (B)

Structured, standardized comparison of potential environmental impacts across different project types is best achieved with checklists or matrices. These tools lay out the same set of impact categories and criteria for every project, so you can rate or score each criterion in a consistent way. By compiling those scores into a matrix, you can compare overall significance, magnitude, duration, reversibility, and other relevant factors side by side for multiple projects or alternatives. This makes the assessment transparent, repeatable, and easier for decision-makers to see where mitigation is needed and how different projects stack up against each other.

In practice, you’d list impact areas (air, water, soil, biodiversity, noise, traffic, socioeconomics, etc.) and the criteria used to judge them, then apply the same scale to each project option. The resulting matrix highlights where one project poses greater risks or requires more mitigation than another, supporting objective comparison rather than ad hoc judgments.

Field surveys focus on collecting site-specific data for a particular project and don’t provide a uniform cross-project comparison framework. Economic analysis centers on costs and benefits rather than systematically ranking environmental impacts across project types. Public hearings gather stakeholder input but do not offer the technical, standardized scoring needed for direct cross-project comparison.