Some additional water quality data may be available from The Nature 

 Conservancy, however. 



Sediments. Arsenic, boron and vanadium concentrations rank mid- 

 range among sites in this class. Iron and selenium concentrations 

 were comparatively high, as was iron (suggesting and boron and zinc 

 concentrations low within the site class. Most other trace 

 elements occurred at concentrations below reporting limits. 

 Arsenic and selenium exceeded mean values for soils of the western 

 United States by factors of 1.25 and 2.6, respectively. Other 

 trace elements analyzed were below the regional mean soil 

 concentrations . 



