When might it be appropriate to consider a removal action to address ecological risk?
Removal actions to address ecological risk should be considered when there is an imminent and substantial threat posed to ecological receptors. It may also be appropriate to consider removal actions when: • the extent of contamination is limited and has been adequately established, contaminant levels can be reasonably expected to pose a risk, and additional studies (remedial investigation, risk assessments, etc.) are highly unlikely to change the findings of the initial removal assessment; • The costs of ecologically-protective removal actions are less than further site-specific assessments and can be completed in a significantly shorter timeframe.
