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Table 3-3 <br /> Method Reporting Limits <br /> Parameter Water Matrix(µg/L) Soil Matrix (mg/kg) <br /> Total Chromium 10 1.0 <br /> Hexavalent Chromium 2a 0.1 <br /> a Results between 2 and 5 µg/L will be qualified as estimated by the laboratory; results <br /> greater than 5 µg/L will not be qualified by the laboratory. <br /> Table 3-4 <br /> Sample Containers, Preservatives, and Holding Times <br /> Media/Parameter Container Preservative Holding Time <br /> Soil/Sediment <br /> Total Chromium Brass Sleeve Cool to 4°C 6 months <br /> Chromium VI Brass Sleeve Cool to 4°C 24 hours <br /> Water <br /> Total Chromium 0.5 L plastic HNO3 to pH<2, 4°C 6 months <br /> Chromium VI 0.5 L plastic Cool to 4°C 24 hours <br />