The Geosciences Rennes laboratory (Rennes, France) has openings for 2 PhD students in hydrogeology:

1 Ph.D. position on inverse modelling of borehole flow measurements and hydrogeophysical data for imaging flow and transport paths in geological media

1 Ph.D. position on modelling reactive transport in heterogeneous porous media

Detailed information on available positions can be found via http://hplus.ore.fr/index.php?lang=en&id_article=98&.
The positions are funded for three years by a European Marie Curie training network and available as early as September 2008. An understanding of French is not a requirement as interactions within the research group can be conducted in English.