Przydatność kryteriów litogenetycznych w konstrukcji numerycznego modelu krążenia wód podziemnych w strefie krawędziowej wysoczyzny

Abstract

The aim of the study was to assess the quality of soils underneath operating railway lines. The lines selected for the examination were outside the reach of external sources of potential pollution. The samples were collected along a plain line section after and before an upgrade work, within the station area and in a railway equipment repair yard. The assessment covered the following types of sections: single-track, double-track, with wooden and concrete sleepers, adjacent to switches subject to lubrication, in the car shunting yard and visibly contaminated areas. The samples were tested for the content of PAH, zinc, copper, lead and PCB. The study did not find evidence of increased levels of the above-listed compounds as compared to the levels found in arable soils located in the vicinity of the line or of their influence on adjacent lands. The content of the examined compounds did not differ depending on the type of line section or its properties. The content of PAH, considered one of the main railway-related pollutants, was sufficiently low to classify the soil along the line and within the station area as unpolluted or slightly polluted.