Light, nonaqueous-phase liquid (LNAPL) assessment and remediation presents a significant challenge for corrective action and cleanup at petroleum processing, storage, and handling facilities such as refineries, bulk product terminals, gas stations, airports and military bases. Once in the subsurface, LNAPLs can be difficult to adequately assess and remediate. The result can be long-term risk and exposure issues such as vapor intrusion, groundwater, surface water and soil contamination or other risk sensitive habitat. It may present a ...  [click for more]