Environmental

What is 'natural attenuation' in the context of environmental remediation at a Delaware site?

AThe natural erosion of contaminated soil over time
BThe use of naturally occurring physical, chemical, and biological processes to reduce contamination without active treatment✓ Correct
CThe testing of natural water sources for contamination
DThe restoration of a site to its pre-contamination natural state

Explanation

Natural attenuation (monitored natural attenuation) relies on natural environmental processes — biodegradation, dilution, volatilization, dispersion — to reduce contaminant concentrations to acceptable levels without aggressive remediation.

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