Conference Presentation Abstract
Noguera, Jose, Lluis Rivero, Xavier Font, Andres Navarro, and Francisco Martinez. Simultaneous use of geochemical and geophysical methods to characterize abandoned landfills. Environmental Geology v. 41, no. 8 (2002): 898-905.
Abstract written by Becky Ciske
A contamination problem exists in the Cal Dimoni area near the Llobregat River in Barcelona, Spain. Groundwater sampling in the Cal Dimoni area determined that the main source of the contamination was from refilled exploitation sites. In the early 1970s, sand and gravel exploitation occurred in this area up until the late 1980s. When these sites were abandoned, they were refilled in a non-controlled way with various industrial, chemical, and urban wastes that caused leachate to form. This has created a threat to the groundwater and soil in the surrounding area.
Hydrogeochemical analyses of these sites showed that concentrations for the major ions were high, and that the elements involved in the oxidation-reduction processes were low. Modifications of the groundwater composition from the unaltered composition show increasing pH values, changing redox-conditions, and increasing total organic carbon (TOC) and certain trace elements.
Last updated December 3, 2002