Soil quality monitoring in olive oil mill waste disposal sites Soil quality monitoring in olive oil mill waste disposal sites Πλήρης Δημοσίευση σε Συνέδριο Conference Full Paper 2015-11-152010enThe uncontrolled disposal of olive oil mill wastes in not properly designed evaporation ponds or directly on soil can cause severe damages to soil properties, affect its quality and subsequently deteriorate the quality of surface- and groundwater in neighboring areas. The aim of this work was to monitor the effects of wastes disposal on soil properties and to develop a soil information and monitoring system for olive oil mills wastes disposal sites with the use of GIS and parameters-indicators for soil quality. Five olive oil mills sites were selected in a pilot municipality in Rethymnon, Crete, South Greece, three of them are active for more than 10 years and two are inactive for the last 6 years. Periodical soil sampling campaigns reveal significant changes in soil properties. The sampling regions have been connected to map layers and an accompanying database of the measured parameters. On-the-fly diagrams that show the temporal fluctuations of the chemical parameters were formed and updated continuously following the corresponding analysis phase. At the same time, surfaces of the most critical parameter-indicators are formed based on kriging interpolation to define their spatial distribution in the wider waste disposal areas. The particular maps are superimposed on other available map layers (e.g. land use, vegetation, geology, erosion, a.o.) contributing to the study of the correlation and effects of the specific pollution parameters to the rest of the environmental attributes of the area. http://creativecommons.org/licenses/by-nc-nd/4.0/2 nd International Conference "Hazardous and Industrial Waste Management Kavvadias Vasileios Καββαδιας Βασιλειος Sarris A. Doula M. Zacharaki Dimitra Ζαχαρακη Δημητρα Arapoglou D. Komnitsas Konstantinos Κομνιτσας Κωνσταντινος