The paper concerns the problem of possible contamination, which can be dangerous to the ground and surface water, because of an inappropriate localization and protection from leaching of harmful substances. The tests were carried out on a closed municipal landfill site in Chełmek, located in the west part of Małopolska Province. Issues concerning water circulation through the cells and landfill ground were analyzed. Using Giryński's field method a permeability coefficient was determined for wastes and ground soil. Granulation, compaction degree, bulk density and natural moisture content were also determined. Based on the obtained results a maximum distance of migration of harmful substances with a wide range of viscosity was calculated.While analyzing the results it was stated that the landfill is located too close to the Przemsza river. In case of an insufficient ground sealing there is a risk of leaching of harmful substances from the landfill and fine sands that are in the ground are not a sufficient barrier to contamination migration that will happen along with the ground water. ...
The paper contains results of assessments of granulometric composition, specific and bulk density, porosity and permeability coefficients of 3 composites with different coarse sand to silt loam proportions, each with 2 slightly diversified variants of organic substance content. The composites were made and tested regarding their potential applications for constructing the carrying layer of a football pitch and were compared, concerning their granulation and water permeability, with DIN 18035 standard. It was determined that the size distribution curve of the composites with the extreme, i.e. the biggest and the smallest content of sand in some areas of standard interval differed slightly from the standard requirements. The composite best adjusted to the standard with regard to granulation was the composite with an medium content of sand. Values of permeability coefficients for more compact composites (i.e. of smaller porosity), at relatively lower values depended on granulation - unlike these which reached higher values of the coefficients, independent of the granulation, obtained at an analogous granulation but lesser cvompaction. The investigations demonstrated that all tested composites satisfied the requirements of water permeability standards, however the limit permissible value was satisfied by even the most compacted composite with the highest content of silt loam. ...
