Sediments. Extractable concentrations of arsenic, boron, copper, 

 vanadium and zinc ranked mid-range among sites within this class. 

 Other trace elements analyzed were reported to be below detection 

 limits. Boron and zinc concentrations exceeded (by small factors) 

 mean concentrations for soils and other surficial materials of the 

 western United States; other reported trace element concentrations 

 were below the regional mean soil concentrations. 



