Environmental
What is 'monitored natural attenuation' (MNA) in Delaware remediation?
ANatural cleanup of contaminated sites without monitoring
BA remediation strategy relying on natural processes to reduce contamination, monitored by periodic sampling to confirm progress toward cleanup goals✓ Correct
CMonitoring only without any active remediation
DA DNREC program providing funding for natural site cleanup
Explanation
Monitored Natural Attenuation (MNA) is a remedy that relies on natural processes — biodegradation, dispersion, dilution, volatilization — to reduce contaminant concentrations to acceptable levels over time, monitored through periodic groundwater and soil sampling.
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