Towards prediction of saturated zone-pollutant movement in groundwaters in fractured permeable-matrix aquifers: the case of the UK Permo-Triassic sandstones, J H Tellam and R D Barker • Flow • High-resolution petrophysical characterization of samples from an aeolian sandstone: the Permian Penrith Sandstone of NW England, M A Lovell, P D Jackson, P K Harvey and R C Flint • Pore geometry of Permo-Triassic sandstone from measurements of electrical spectroscopy, J B T Scott and R D Barker • Characterization of permeability distributions in six lithofacies from the Helsby and Wilmslow sandstone formations of the Cheshire Basin, UK, J P Bloomfield, M F Moreau and A J Newell • Petrophysical characterization of the Sherwood Sandstone from East Yorkshire, UK, M Pokar, L J West and N E Odling • Calcrete as a source of heterogeneity in Triassic fluvial sandstone aquifers (Otter Sandstone Formation, SW England), A J Newell • Sedimentary and diagenetic environments of the Wildmoor Sandstone Formation (UK): implications for groundwater and contaminant transport, and sand production, J E Bouch, E Hough, S J Kemp, J A McKervey, G M Williams and R B Greswell • Estimation of vertical diffusivity from seasonal fluctuations in groundwater pressures deep in boreholes near Sellafield, NW England, M J Streetly, J A Heathcote and P J Degnan • Structural controls on groundwater flow in the Permo-Triassic sandstones of NW England, K J Seymour, J A Ingram and S J Gebbett • Towards understanding the Dumfries Basin Aquifer, SW Scotland, M C Akhurst, D F Ball, L Brady, D K Buckley, J Burns, W G Darling, A M MacDonald, A A McMillan, B E O Dochartaigh, D W Peach, N S Robins and G P Wealthhall • Unsaturated flow • DC electrical properties of Permo-Triassic sandstone, S Taylor and R D Barker • Flow and transport in the unsaturated Sherwood Sandstone: characterization using cross-borehole geophysical methods, P Winship, A Binley and D Gomez • Pollutant movement • Non-reactive solute movement through saturated laboratory samples of undisturbed stratified sandstone, K Bashar and J H Tellam • Controls on dense non-aqueous phase liquid transport in Permo-Triassic sandstones, UK, D C Gooddy and J P Bloomfield • The arsenic concentration in groundwater from the Abbey Arms Wood observation borehole, Delamere, Cheshire, UK, D G Kinniburgh, A J Newell, J Davies, P L Smedley, A E Milodowski, J A Ingram and P D Merrin • Investigating rising nitrate concentrations in groundwater in the Permo-Triassic aquifer, Eden Valley, Cumbria, UK, A Butcher, A Lawrence, C Jackson, E Cullis, J Cunningham, K Hasan and J A Ingram • The capillary characteristic model of petroleum hydrocarbon saturation in the Permo-Triassic sandstone and its implications for remediation, K D Privett • Investigation and management of a kerosene leakage into a Permo-Triassic sandstone aquifer in the UK, S B Rees • Combined isotopic and modelling approach to determine the source of saline groundwaters in the Selby Triassic sandstone aquifer, UK, S H Bottrell, L J West and K Yoshida