National Water-Quality Assessment (NAWQA) (public)
National Analysis of Trace Elements (public)
Trace Element National Synthesis internal homepage - QA/QC

Trace Element Quality-Control Data (Cycle 1)

Ground water and surface water blank data (Excel file)

Ground water and surface water replicate data (Excel file)

Trace Element National Synthesis internal homepage - QA/QC
National Analysis of Trace Elements (public)
National Water-Quality Assessment (NAWQA) (public)

This page is water.usgs.gov/nawqa-only/trace/qaqc/cycle1_qc.html
Email comments/questions to traceweb@usgs.gov
Last modified: 25Oct2005