Guidance Document on the Management of Light Non-Aqueous Phase Liquids (LNAPL) at Federal Contaminated Sites Version 1.0

This document addresses the management of light non-aqueous phase liquids (LNAPL) at federal contaminated sites in Canada. It provides an objective, simplified, risk-based approach for effective LNAPL site management. The document focuses on the behaviour, and potential remedial drivers associated with the LNAPL plume.

The tools and procedures outlined in this guidance document are consistent with the risk-based philosophy on which the FCSAP program is based and are aligned with the federal management approach for contaminated sites set out in the FCSAP Decision-Making Framework (DMF) (FCSAP, 2018).