Université de Neuchâtel

Documentation of time-scales for onset of natural attenuation in an aquifer treated by a crude-oil recovery system

Ponsin, V ; Maier, J ; Guelorget, Y ; Hunkeler, Daniel ; Bouchard, D ; Villavicencio, H ; Höhener, P

In: Science of the Total Environment, 2015, vol. 512-513, p. 62-73

A pipeline transporting crude-oil broke in a nature reserve in 2009 and spilled 5100 m3 of oil that partly reached the aquifer and formed progressively a floating oil lens. Groundwater monitoring started immediately after the spill and crude-oil recovery by dual pump-and-skim technology was operated after oil lens formation. This study aimed at documenting the implementation of...