An introduction to soils as a porous medium, the properties of fluids in porous media, with particular attention to the hydraulic cycle and soil gases. The course concentrates on the chemical equilibria in soils: liquid-mineral equilibria, dissolution, precipitation, exchange with soil gases, the CO2/bicarbonate system, ion exchange and sorption. Case studies are discussed with emphasis on experimental methods and the use of geochemical computer models. PREREQ: CHMI 2316 or GEOL 2807. (lec 3, lab 3) cr 3