WYSTĘPOWANIE TRICHLOROETENU I TETRACHLOROETENU W WODACH PODZIEMNYCH W REJONIE TARNOWSKICH GÓR

Abstract

OCCURRENCE OF TRICHLOROETHENE AND TETRACHLOROETHENE IN GROUNDWATER IN TARNOWSKIE GÓRY AREA

Abstract. Trichloroethene (TCE) and tetrachloroethene (PCE) contamination have been monitored in water of Triassic carbonate aquifer in Tarnowskie Góry area since 1994. The source of the contamination is industry, located in the Tarnowskie Góry, what has been confirmed by spatial distribution of TCE and PCE concentration in the aquifer and maximum concentration observed in the city and immediate vicinity. The concentrations of TCE and PCE decrease with increase distance from Tarnowskie Góry in the west, south west and north-west direction. The results demonstrate that contamination plume is spreading out up to 15 km in the west direction from the source of the contamination. Confirmation of migration of these constituents is continuous increase of TCE and PCE concentrations in the water from wells uncontaminated at the beginning of the research studies. The paper summarizes results of the investigation for years 1994 to 2010. It was indicated that important role in spreading the TCE and PCE in the groundwater play geological structure, hydrodynamic and hydrogeochemical properties of the Triassic carbonate aquifer. Reliable prediction of temporal and spatial TCE and PCE concentration changes require to take into consideration all mentioned above factors.