Sediments. Relatively recent wetland mitigation activities may 

 have disturbed sediments at the WET43 site. Extractable trace 

 element concentrations are generally low; arsenic, boron, iron, 

 vanadium and zinc concentrations were all at or near the lower end 

 of the ranges shown for sample sites in this classification. Other 

 trace element concentrations were below reporting limits. None 

 exceeded mean soil concentrations for the western United States. 



