hello;

...finding this difficult to investigate...I've been to several EPA sites:TMDA;STORET;Surf Your Watershed;Environmapper for Water;EPA Sediment Quality ;also the USDA ARS Water Quality site. Corresponding with my state Ag. Extension.Looking for river water analysis used for agricultural purposes similar to the format at: Washington State Department of Ecology Toxic Cleanup Program>Sediment Management>Sediment Quality Chemical Criteria

http://www.ecy.wa.gov/programs/tcp/smu/sed_chem.htm