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<br />Table 1. Analytical strategy for Basic Fixed Sites <br /> <br />Field ~easure~ents <br /> <br />Dissolved oxygen <br />pH and Alkalinity <br />Specific conductance (hourly or daily if local conditions require) <br />Temperature (hourly for 1 year) <br /> <br />Laboratory analyses <br /> <br />Suspended sedi~ent <br /> <br />Major constituents: <br />Dissolved solids <br />Major ions and ~etals: <br />Calcium <br />Chloride <br />Fluoride <br />Iron <br />Magnesium <br />Manganese <br />Potassium <br />Silica <br />Sodium <br />Sulfate <br /> <br />Nutrients <br />Nitrogen: <br />Total <br />Total dissolved <br />Ammonia <br />Nitrite <br />Nitrate <br />Phosphorus: <br />Total <br />Total dissolved <br />Ortho <br /> <br />Organic carbon: <br />Suspended <br />Dissolved <br /> <br />4 Collecting and Processing Stream-Water Samples for the National Water-Quality Assessment Program <br />