Adequate soil sampling with the implementation of quality control guaranties high accuracy outputs of chemical analysis of the sampled soil. Mining and Metallurgy Institute Bor, as accredited scientific institution, sampling the soil from various locations according to the previously established sampling plan and to the standards ISO 18400-101 and 180400-104. The standards define the sampling scheme. Control of compulsory monitoring of sampling quality is done by ISO 18400-106 standard. Monitoring the quality control of the sampled soil, means formation of Trip blanks and Field blanks. Developed quality control plan monitors the status of the mentioned blanks, which considers the initial chemical composition of the zero blank, its way of packing and transport to the place where sampling occurs, preservation and storage as well as chemical analysis on specific elements. During 2019, Mining and Metallurgy Institute conducted quality control after every sampling on 6 locations. Comparative chemical analysis of the blanks after the sampling, started with zero blank, resulted in non-existence of cross contamination of the sampled soil. Conclusion is that the sampling was implemented according to the given procedures and standards.