摘要:The paper presents chemical analysis of groundwater after sudden release of substances. Construction of monitoring was setting on 4 locations, two in the vicinity of City complex process systems. Measuring apparatuses were placed in the vicinity of complex process systems area at the depth of 50m. Result of chemical analysis presents organic substances, halogen hydrocarbon, aromatic hydrocarbon (benzene, toluene and xilene), phenol and other chemical substances. Review of chosen gas chromatograms for benzene, toluene and xylene, low-chlorate hydrocarbons, polychlorinated biphenyls (PCB) and poly aromatic hydrocarbons polycyclic aromatic hydrocarbons (PAH) was presented.