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Sweet, B., K. Davidson, and C. Lake. | RemTech 2019: Remediation Technologies Symposium, 16-18 October, Banff, 18 slides, 2019

Recent research has explored the potential of an in situ laser-induced fluorescence technique to spatially delineate organic-rich industrial sediments contaminated with dioxins and furans to collect unique optical signatures of materials based on their physiochemical properties. Lab and field work were conducted at a stabilization basin that has received industrial wastewater over the past 50+ years in Nova Scotia, Canada. Preliminary lab and field testing on sediments within the basin served as proof of concept for the application. The system's performance was compared to standard gravity cores, the results of which are included in the presentation. This system has the potential to vertically delineate the presence or absence of contaminated sediments, which will assist in producing more accurate volume estimates for remedial dredging operations with implications for similarly contaminated environments undergoing assessment and/or remediation. Longer abstract: Slides: See pages 97-115 for pilot study results

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