Laser-induced fluorescence logging as a high-resolution characterisation tool to assess LNAPL mobility.

High-resolution characterisation tools such as Laser-Induced Fluorescence (LIF) logging represent a step forward towards a more effective management of sites contaminated by light non-aqueous phase liquid (LNAPL) petroleum hydrocarbons. In this paper, the applicability of LIF response as an indicator of LNAPL mobility at one site with an unconsolidated aquifer was investigated. LIF profiles were logged adjacent to twin coring locations and wells with LNAPL transmissivity (T) measurements in a heterogeneous gasoline contaminated site in Western Australia.

LNAPL transmissivity as a remediation metric in complex sites under water table fluctuations.

Water table fluctuations affect the recoverability of light non-aqueous phase liquid (LNAPL) petroleum hydrocarbons. LNAPL transmissivity (T) is being applied as an improved metric for LNAPL recoverability. In this paper, the applicability of T as a lagging and leading metric in unconsolidated aquifers under variable water table conditions was investigated.