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5. Data Analysis <br /> As shown in Figure 3, the six drainages have significantly different geometric mean concentrations of <br /> NPL parameters. The following subsections address the chemistry data by drainage. In all tables, <br /> standard deviation is abbreviated S.D., maximum as Max, minimum as Min, and n is the number of <br /> samples. <br /> 5.1 Squaw Gulch <br /> Monitor wells SGMW-3A, SGMW-6A, and SGMW-7A have been dry since construction, and SGMW- <br /> 7B was only sampled on two occasions (data are included). Table 5 presents the geometric mean data of <br /> the Squaw Gulch data. <br /> Table 5: Analytical results for Squaw Gulch data. All values are in mg/L except for pH which is in <br /> standard units;N.D. is for no data recorded above the re orting limit. <br /> Cyanide <br /> Calculation Aluminum Arsenic Cadmium Copper WAD Fluoride <br /> Geomean 0.77 N.D. 0.002 0.008 0.01 2.81 <br /> S.D. 1.96 0.002 0.013 3.34 <br /> Max 12.10 0.012 0.057 0.01 18.70 <br /> Min 0.01 0.000 0.005 0.01 0.39 <br /> n 118 60 16 1 135 <br /> Nitrite as <br /> Iron Lead Manganese Mercury Nickel N <br /> Geomean 0.49 0.003 1.16 0.0014 0.02 0.16 <br /> S.D. 4.32 0.002 10.39 0 0.03 <br /> Max 11.90 0.009 49.00 0.0014 0.19 0.16 <br /> Min 0.02 0.001 0.01 0.0014 0.01 0.16 <br /> n 55 13 103 1 92 1 <br /> Nitrate as Nitrate+ pH Selenium Sulfate Zinc <br /> N Nitrite as N <br /> Geomean 1.11 1.85 6.36 0.008 431 0.16 <br /> S.D. 4.32 5.35 0.64 0.007 320 0.40 <br /> Max 19.80 19.80 8.55 0.023 1330 2.67 <br /> Min 0.06 0.12 4.99 0.005 12 0.01 <br /> n 115 61 206 6 1 125 81 <br /> Table 5 shows that there is significant variability in the analytical data for all constituents that recorded <br /> concentrations above the minimum reporting limit. <br /> 12 <br />