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<br />the laboratory. <br /> <br />Laboratory analyses of the ground-water samples will be <br />performed in accordance with the following analytical methods: <br /> <br />Parameter <br /> <br />General Chemistry <br /> <br />Calcium <br />Magnesium <br />Sodium <br />Potassium <br />Carbonate <br />Bicarbonate <br />Sulfate <br />Fluoride <br />Nitrate (N) <br />Phenolphthalein- <br />Alkalinity (CaCO3) <br />Alkalinity (CaCO3) <br />Hardness (CaC03) <br />Chloride <br />cation-Anion Balance <br />pH <br />Specific Condo <br />TDS <br /> <br />Total Orqanic Carbon <br /> <br />Trace Metals <br /> <br />Arsenic <br />Barium <br />Cadmium <br />Chromium <br />Copper <br />Iron <br />Lead <br />Manganese <br />Mercury <br />Selenium <br />Silver <br />Zinc <br /> <br />Volatile Orqanic <br />Compounds (PPL) <br /> <br />Method <br /> <br />Reference <br /> <br />215.1 <br />242.1 <br />273.1 <br />258.1 <br />403 <br />4"03 <br />375.4 <br />340.2 <br />353.3 <br /> <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />Standard Methods <br />Standard Methods <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br /> <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br /> <br />310.1 <br />310.1 <br />130.2 <br />325.3 <br /> <br />150.1 <br />120.1 <br />160.1 <br /> <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br /> <br />415.1 <br /> <br />EPA 600/4-79-020 <br /> <br />206.3 <br />208.1 <br />213.1 <br />218.1 <br />220.1 <br />236.1 <br />239.1 <br />243.1 <br />245.1 <br />270.3 <br />272.1 <br />289.1 <br /> <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br />EPA 600/4-79-020 <br /> <br />8240 <br /> <br />EPA SW-846 <br /> <br />Following each semiannual monitoring event, the laboratory <br />analytical reports and QA/QC data will be reviewed. A letter <br />describing any QA problems or unusual parameter concentrations <br />will be transmitted to the City along with the following <br /> <br />9 <br />