The Risk Assessment Information System

Ecological Benchmark Tool for Chemicals

 Screening ecological benchmarks are used to identify chemical concentrations in environmental media 
		that are at or below thresholds for effects to ecological receptors. This tool presents a comprehensive 
		set of ecological screening benchmarks for surface water, sediment, surface soil, and biota applicable 
		to a range of aquatic organisms, soil invertebrates, mammals, and terrestrial plants. The benchmarks 
		provided are from national, state, and international agencies. Many of the benchmarks were originally 
		derived from the Environmental Sciences Division  of Oak 
		Ridge National Laboratory or compiled as part of the SADA project.


		
Please consult the user's guide for more details about the benchmarks, usage 
		of this tool, and guidance on ecological risk assessments.
Using the Ecological Benchmark Search Tool

		



Select Benchmark Sources (select at least one)

	





Select Media (select at least one)
  *For sediment and surface water, the generic category contains benchmarks applicable to both fresh water and marine or where no differentiation was made by the source. These values are not repeated in the fresh water and marine categories. Likewise, values listed in the fresh water and marine categories are not repeated in the generic categories.
	





Select Individual Chemicals  (200 maximum)

	

    
    

        
        

            

                
                


                
            

            
            
            

                
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