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TABLE 4-7 (continued) GROUND WATER QUALITY GENERAL MINERALS ANALYSIS:INORGANICS and PARAMETERS Sample Location: MW-2 MW-2 MW-2 Landfill Landfill Landfill Landfill Blank Date Sampled: 07/10/89 01/19/90 04/04/90 07/10/89 10/20/89 01/17/90 04/04/90 07/10/89 Sample ID Number: 35098 61266 62962 35093 42122 61251 62957 35074 Laboratory ID Number: 48140-06 51103-01 52440-02 48140-05 49811-04 51084-01 52440-01 48140-07 Analyzing Lab: Enseco Enseco Enseco Enseco Enseco Enseco Enseco Enseco Sample Matrix: Water Water Water Water Water Water Water Water Reporting Inorganics&Parameters Results Results Results Results Results Results Results Results Limit Units Calcium 14 17.6 27.1 24 26.3 26.3 17.1 ND 0.1 mg/L Iron ND ND ND ND ND ND ND ND 0.1 mg/L Magnesium 8.6 8.5 11 11 11 10.1 8.7 ND 0.2 mg/L Potassium ND ND ND ND ND ND ND ND 5 mg/L Sodium 14 12.7 13.2 13 13.6 13.1 11.8 ND 5 mg/L Chloride 5 6 7.1 9 11 10.3 10.2 ND 5 mg/L Sulfide ND ND ND ND ND ND ND 0.05 mg/L Sulfate ND 1.5 1.4 13 14 14.8 14.6 ND 5 mg/L Nitrate as N 0.81 3 3 0.34 1.2 1.3 1,3 ND 0.05 mg/L Ammonia as N ND 0.1 mg/L Total Dissolved Solids 140 152 158 175 155 150 196 ND 10 mg/L Dissolved Organic Carbon 0.54 0.1 mg/L Total Organic Carbon ND 0.61 ND 0.51 0.83 0.72 ND 0.5 mg/L Chemical Oxygen Demand ND ND ND ND 5 mg/L Total Alkalinity as CaCO3 85 81.8 104 102 108 6 1 mg/L Bicarbonate as CaCO3 85 81.8 77.9 104 108 102 6 1 mg/L Carbonate as CaCO3 ND ND ND ND ND ND ND 1 mg/L Hydroxide as CaCO3 ND ND ND ND ND 1 mg/L pH 8 7.5 8 5 Specific Conductance 219 256 279 8 1 umhos/cm Notes: ND-Not detected above laboratory reporting limit. PAP -A blank indicates that this constituent was not analyzed for in this sample. r m_ FT•4" Z rn r m