Landfarming is used to treat petroleum hydrocarbon–contaminated soils and a variety of waste streams from industrial operations. Wastes are applied to a soil surface and indigenous soil microorganisms utilize the hydrocarbons in the applied waste as a carbon source for metabolism, thereby biodegrading the applied material. Concerns have been expressed that abiotic losses, such as volatilization, play a significant role in hydrocarbon reduction within the soil. To assist in better defining atmospheric releases of total hydrocarbons from landfarms treating petroleum hydrocarbons, a flux gradient micrometeorological approach was developed and integrated with a custom-built total hydrocarbon detector, and a novel air sampling system and averaging algorithm. The micrometeorological technique offers unobtrusive spatially averaged real-time continuous measurements, thereby providing a time history of emissions. This provides opportunities to investigate mechanisms controlling emissions and to evaluate landfarm management strategies. The versatility of the technique is illustrated through measurements performed at a remote landfarm used to treat diesel fuel–contaminated soil in northern Ontario and during routine operations at two active refinery landfarms in southwestern Ontario.
Ausma, S., Edwards, G. C., Wong, E. K., Gillespie, T. J., Fitzgerald-Hubble, C. R., Halfpenny-Mitchell, L., & Mortimer, W. P. (2001). A Micrometeorological technique to monitor hydrocarbon emissions from landfarms to the atmosphere. Journal of Environmental Quality, 30(3), 776-785. https://doi.org/10.2134/jeq2001.303776x