The influence of uncontrolled dump sites on chemical properties of organic and mineral grey-brown podsolic soils, developed from clay and loam was assessed by the comparison of results obtained for the samples taken both from the surface soil layer under the dump site and adjacent arable land. Altogether 83 soil samples were examined to determine: pH(KCl), loss at burning, the content of P, K, Mg, and the content of P, K, Mg, Cd, Pb, Zn, Cu soluble in the mixture of concentrated HNO3+HClO4. The content of heavy metals in four samples of dominating waste fraction on uncontrolled dump site in the area of the former object of the Soviet Army in Kluczewo (municipality Stargard Szczecinski) was also determined. The surface layer 0-20 cm of organic soil under the dump site contained, in comparison with adjacent grassland soil, increased amounts of anthropogenic admixtures, and on average 195 times more Cd, 2.83 times more Pb, 2.08 times more Zn and 1.7 times more Cu. In the surface layer 0-30 cm of soils developed from clay and loam under the dump site, the amount of anthropogenic admixtures was also increased, acidity was slighty lower, and there was on average 3.89 times more Cd, 9.93 times more Pb, 6.67 times more Zn and 12.77 times more Cu than in adjacent arable land.
