7.1.15 (HL)—EIA guidance variation

EIA law and guidance differ among countries and regions, but a defensible assessment starts with site-specific baseline conditions before predicting project change.

Select parameters relevant to the project—such as water quality and flow, biodiversity, soil, air, noise, livelihoods and cultural sites—then compare alternatives and propose mitigation to avoid or reduce harm.

If turbidity is already high before construction, later measurements require a different inference than a rise from a clean baseline; continued monitoring tests the prediction.

Guidance sets process and thresholds, while baseline evidence anchors attribution, mitigation and adaptive management at the site.

Guidance cannot replace site-specific baseline data.