Final Report to the Water Resources Center A Microscale Approach to Simulating Seasonal Bioavailability Constraints on Intrinsic Biodegradation Project: WR-904
نویسندگان
چکیده
The current regulatory trend towards accepting intrinsic bioremediation as a long-term management scheme for residual organic pollutants in the subsurface for fuel spills is based on statistical evaluations of plume behavior for a limited array of pollutants. The effectiveness of intrinsic bioremediation towards protecting water supplies, and hence human health, is not known for many pollutants. In addition, the patterns of biodegradation that occur over seasonal time scales and hence the seasonality of intrinsic bioremediation and its intermediate effectiveness is unknown. Residual non-aqueous phase liquids (NAPLs) in the vadose zone, if left in place, have the potential to mobilize with seasonal moisture fluctuations. These seasonal variations in mass transfer along with the intrinsic microbial biodegradative response to moisture variations will determine bioavailability, which is a measure of the potential effectiveness of intrinsic bioremediation.
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