Enhanced scrubber technology for coal-fired boilers, to be brought online at the Alcoa Warrick Operations Plant in Newburg, Indiana, USA, will generate increased volumes of coal-combustion products. This paper and field trip examine hydrogeological characteristics at the site of a management facility for coal-combustion products currently in development. An exposed highwall strip pit (Y-pit) on abandoned mine lands will be the site for coal-combustion product placement. Hydrogeological monitoring and characterization data for mined area spoils and unmined Paleozoic rocks will be reviewed in the field. Mine spoils at this site display horizontal hydraulic conductivities that range from 10^-3 to 10^-8 cm/s, and unmined bedrock varies from 10^-7 to 10^-8 cm/s. Groundwater at the B-2 site in shallow spoils near the Y-pit displays responses to precipitation events, and groundwater levels at the B-5 site in the unmined bedrock display Earth-tide responses. The Y-pit has variable hydrogeologic regimes along its length, including areas of flow-through and discharge. Groundwater discharge gradients increased markedly during periods of drought. Groundwater recharge gradients in the flow-through area decreased during drought conditions. Spoils groundwater is dominantly a highly mineralized water rich in calcium sulfate, and bedrock groundwater is highly mineralized water rich in sodium sulfate/chloride. Y-pit surface water most closely resembles spoils groundwater. Both the mine spoils and unmined bedrock groundwater samples have concentrations of arsenic that exceed the primary drinking water standard.