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  • 1.
    Levin, Sara
    Mälardalen University, School of Sustainable Development of Society and Technology.
    Riktvärden för förorenad mark: En undersökning av hur riktvärden för förorenad mark har förändrats gentemot tidigare riktvärden samt hur de påverkas av variationer i geologiska och hydrogeologiska parametrar2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Risk assessment is made to determine risks with contaminated areas and to determine which treatment the area requires. In Sweden, risk assessment is divided into three levels: risk analysis, facilitated risk assessment and detailed risk assessment. In detailed risk assessment site-specific guideline values are developed to compare with values of contaminants that are measured in the area.

    Site-specific guideline values vary with geological and hydrogeological parameters. The purpose of this report is to examine which of these parameters that affect the guideline values. The examination was done using a calculating program for consideration from the Swedish Environmental Protection Agency from the year of 1997. The study shows that some of the geological and hydrogeological parameters affect the site-specific guideline values for metals in different ways and others do not.  

    Using the program from the Swedish Environmental Protection Agency is a simple way to calculate site-specific guideline values. It’s important to make sure that relevant values are chosen to get correct results. The calculating program is still not definitive so it’s important to be careful when using it.

    Another purpose of the report is to compare how guideline values have developed from the Swedish Environmental Protection Agency’s model for calculating guideline values from the year of 1997 with their new report whit the same purpose from the year of 2007. Guideline values for all metals that have been considered are lower in the new model from the year of 2007 compared to the model from the year of 1997.

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