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October 2000 -35- 003-2191 <br />• Dawson Denver <br />Calcium (mg/L) 30 11 <br />Magnesium (mg/L,) 2.7 0.4 <br />Sodium (mg/L) l2 57 <br />Potassium (mg/L) 3.5 1.0 <br />Bicarbonate (mg/L,) 120 150 <br />Chloride (mg/L) 3.7 3.8 <br />Nitrate as N (mg/L) 0.1 l 0.05 <br />Sulfate (mg/L) 12 13 <br />Thus faz, a single round of groundwater sampling has been performed in [he monitoring <br />wells recently installed at the site. Analytical results for major cations, anions and <br />dissolved metals have been received and are attached in Appendix 5. These results <br />indicate that water in the B Sand is of good quality and has a chemistry typical of the <br />Dawson aquifer. All of the samples indicate the groundwater chemistry is dominated <br />by calcium cations. The dominant anions aze bicarbonate (M-1 and M-6), carbonate <br />(M-4), and sulfate (M-3). M-2 was nearly dry at the time of sample collection and M-5 <br />did not produce enough sample for laboratory analysis. Trace metals detected thus far <br />in the wells include: <br />• Barium (M-1, M-3, M-4, and M-6); <br />• Cobalt (M-1, M-3, M-4, and M-6); <br />• Chromium (M-3 and M-4); <br />• Copper(M-1, M-3, M-4, and M-6); <br />• Nickel (M-1, M-3, M-4, and M-6); <br />• Lead (M-1, M-3, and M-6); <br />• Antimony (M-I); <br />• Selenium (M-1); <br />• Vanadium (M-3, M-4, and M-6); and <br />• Zinc (M-1, M-3, M-4, and M-6). <br />Natural variations in each of the analytes will be established as additional background <br />samples are collected. <br />VOOR 191/:1915NaliaPeem~11000 dac Sedalia Recycling Center and Depository <br />