Investigation of soil contamination level beneath the metallurgical waste landfill for the purpose of future reclamation works. One of the most important activities when preparing a land reclamation project of brow fields is a comprehensive analysis and documentation of subsoil conditions at the site. The article presents site investigation methodology conducted for the purpose of preparing land reclamation project of the metallurgical waste landfill, located in a close vicinity of a developed big city. The landfill was a part of the steel plant facilities where combustion by-products were disposed. The article presents range and methodology of contaminated soil survey, waste morphology and composition analyses as well as documentation of obtained results. The research consisted of both, site investigation and laboratory tests. A detailed analysis of the results allowed precise determination of soil contamination indicators, environmental impact zones and volumetric capacity of contaminated soil. On the bases of such methods, as geoelectrical tests, boreholes, geodetic surveys and laboratory chemical analyses of samples, several maps of contamination impact zones were prepared, which at the final stage allowed completing a complex brown field reclamation plan.