1. Department of Groundwater Remediation; Helmholtz Centre for Environmental Research - UFZ; Permoserstraße 15 04318 Leipzig Germany
2. InnoTech Alberta; 3-4476 Markham Street Victoria BC Canada
3. Department of Geography; University of Victoria; P.O. Box 3060 STN CSC Victoria BC Canada
4. Department of Catchment Hydrology; Helmholtz Centre for Environmental Research - UFZ; Theodor-Lieser-Straße 4 06120 Halle Germany