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  • What are Regional Screening Levels (RSL) and why are they used?

    What are Regional Screening Levels (RSL) and why are they used?

    The Regional Screening Levels (RSL) can be described as risk-based concentrations derived from standardized equations combining exposure information assumptions with EPA toxicity data (United States Environmental Protection Agency, 2020). Why are SLs used? The EPA Regional Screening Levels (RSL) are used for site screening and as initial cleanup goals. In site screening, the most ...

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  • Chrome, Hexavalent Chromium
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    Chrome, Hexavalent Chromium

    Overview / OSHA: Hexavalent chromium, Chromium VI, is one of the valence states (+6) of the element chromium. It is usually produced by an industrial process. Chromium (VI) is known to cause cancer. In addition, it targets the respiratory system, kidneys, liver, skin and eyes.