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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 ...

Toxicity Monitoring of Waste Waters from Tanneries with Microbiotests

Abstract : Waste waters from tanneries pose one of the most difficult problems for the treatment and subsequent discharge of such industrial effluents in surface waters. The biological breakdown of ...

EPA Releases Final Risk Evaluation for Methylene Chloride and the Need to Protect Workers in Puerto Rico from Exposure Risks

Earlier this month, the U.S. Environmental Protection Agency (EPA) released its Final Risk Evaluation for Methylene Chloride. The evaluation was completed as part of the agency’s mission to protect human health and the environment under the ...

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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.