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<br /> the analytical accuracy and precision. The program will consist of a series of laboratory <br /> duplicates and spiked samples that will be analyzed at the same time as the original field <br /> samples. The results of these analyses and comprehensive QA/QC reporting will be provided <br /> by the laboratory. <br /> Laboratory analyses of the ground-water samples will be performed in accordance with the <br /> following analytical methods: <br /> Parameter Method Reference <br /> General Chemistry <br /> <br /> Calcium 215.1 EPA 600/4-79-020 <br /> Magnesium 242.1 EPA 600/4-79-020 <br /> Sodium 273.1 EPA 600/4-79-020 <br /> Potassium 258.1 EP A 600/4-79-020 <br /> Carbonate 403 Standard Methods <br /> Bicarbonate 403 Standard Methods <br /> Sulfate 375.4 EP A 600/4-79-020 <br /> Fluoride 340.2 EPA 600/4-79-020 <br /> Nitrate (N) 353.3 EPA 600/4-79-020 <br /> Phenolphthalein- <br /> Alkalinity (CaCO3) 310.1 EPA 600/4-79-020 <br /> Alkalinity (CaCO3) 310,1 EPA 600/4-79-020 <br /> Hardness (CaCO3) 130.2 EPA 600/4-79-020 <br /> Chloride 325.3 EPA 600/4-79-020 <br /> Cation-Anion Balance <br /> pH 150.1 EPA 600/4-79-020 <br /> Specific Condo 120.1 EP A 600/4-79-020 <br /> TDS 160.1 EPA 600/4-79-020 <br /> Total Organic Carbon 415.1 EP A 600/4-79-020 <br /> <br /> Trace Metals <br /> Arsenic 206.3 EP A 600/4-79-020 <br /> Barium 208.1 EP A 600/4-79-020 <br /> Cadmium 213.1 EP A 600/4-79-020 <br /> Chromium 218.1 EP A 600/4-79-020 <br /> Copper 220.1 EPA 600/4-79-020 <br /> Iron 236.1 EP A 600/4-79-020 <br /> Lead 239.1 EPA 600/4-79-020 <br /> Manganese 243.1 EP A 600/4-79-020 <br /> Mercury 245.1 EP A 600/4-79-020 <br /> Selenium 270.3 EP A 600/4-79-020 <br /> Silver 272.1 EPA 600/4-79-020 <br /> Zinc 289.1 EP A 600/4-79-020 <br /> 4 <br />