Abstract
The paper presents a methodology to assess the solutions for the management of contaminated sites. For defining these solutions there were developed two main activities. First one consists in a detailed site investigation to define its geological, hydrogeological characteristics and surely the contamination level. The second activity is dedicated to the assessment of risk generated by the soil, subsoil, air, and groundwater contamination, by using a professional software. The methodology was applied to a real case study. The results showed that for non-carcinogenic compounds the risk is above the thresholds establish by legislation. The conclusion is that measures to mitigate this risk must be taken, based on a feasibility study that will be realised in the next stage of the research.
Highlights
Based on the soil analyses performed for THP and benzene, there was noted a significant pollution with petroleum products up to a depth of 5 m in the reservoirs area, the zone for loading petroleum products and in the waste oil storage zone
The analyses of the groundwater samples revealed a significant pollution with petroleum products (THP, benzene) inside the platform, and this contamination has migrated outside the site, towards the residential area
The results of risk assessment show that the carcinogenic risk is below the regulated threshold, and only toxic risk is above the threshold, according to Romanian legislation [6]
Summary
The management of contaminated zones is a tool that prevents and reduces the negative effects generated by these areas to the environment and surely to human health. The management program must provide data on the following aspects: the history of the area; its characteristics, including contaminants; impact on internal and external receptors (population and environment); land use restrictions; control of the management of the contaminated area in the context of its current or future use; deficiencies in the current state of information and the need for additional investigations to facilitate decision - making; risk reduction or management requirements for future uses of the area; requirements for future monitoring; future regulatory or reporting requirements. The implementation of one of these measures depends on several factors, among which the most important are the risks associated with pollution, the potential uses of the area as a whole and, the self-cleaning capacity of the underground environment
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