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ASSESSMENT AND REMEDIATION OF A LIGHT NON-AQUEOUS PHASE LIQUID HYDROCARBON PLUME IN FRACTURED BEDROCK
Mitchell, I.
Journal of Environmental Solutions for Oil, Gas, and Mining 5(1):1-24(2019)
Bunker C oil was discovered on the Canadian Forces Base (CFB) Esquimalt when construction to extend an access road exposed bedrock fractures in the roadside. The LNAPL source was thought to originate from a Bunker C oil spill ~100 m uphill. Geological mapping of bedrock structural features was undertaken to assess bedrock outcrops for fracture density, fracture aperture, the orientation of primary fracture sets, and lithologic contacts. The area was also inspected for larger-scale structural features such as faults, deformation, and erosional features that might influence contaminant migration. Dominant preferential pathways controlling LNAPL migration at the site were identified. By superimposing these features on areas where LNAPL was observed, LNAPL delineation targets were effectively identified, and the plume was subsequently delineated with confidence and remediated.
Journal of Environmental Solutions for Oil, Gas, and Mining 5(1):1-24(2019)
Bunker C oil was discovered on the Canadian Forces Base (CFB) Esquimalt when construction to extend an access road exposed bedrock fractures in the roadside. The LNAPL source was thought to originate from a Bunker C oil spill ~100 m uphill. Geological mapping of bedrock structural features was undertaken to assess bedrock outcrops for fracture density, fracture aperture, the orientation of primary fracture sets, and lithologic contacts. The area was also inspected for larger-scale structural features such as faults, deformation, and erosional features that might influence contaminant migration. Dominant preferential pathways controlling LNAPL migration at the site were identified. By superimposing these features on areas where LNAPL was observed, LNAPL delineation targets were effectively identified, and the plume was subsequently delineated with confidence and remediated.
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