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PARAMETER <br />Number of <br />Analyses <br />Number of <br />Non - Detect <br />Analyses <br />Maximum <br />Value <br />Minimum <br />Value <br />Average <br />Value <br />Standard <br />Deviation <br />Median <br />Value <br />Acidity, Total (mg /I as CaCO3) <br />2 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />Alkalinity, Bicarbonate (mg /I as CaCO3) <br />2 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />Alkalinity, Carbonate (mg/I as CaCO3) <br />2 <br />0 <br />27 <br />16.8 <br />21.9 <br />7.2 <br />21.9 <br />Alkalinity, Hydroxide (mg/I as CaCO3) <br />1 <br />0 <br />2.39 <br />2.39 <br />2.39 <br />ND <br />ND <br />Alkalinity, Total (mg/I as CaCO3) <br />2 <br />0 <br />52 <br />39.7 <br />45.9 <br />8.7 <br />45.85 <br />Aluminum, Dissolved (mg/I as Al) <br />2 <br />0 <br />0.042 <br />0.0207 <br />0.031 <br />0.015 <br />0.03135 <br />Arsenic, Dissolved (mg/I as As) <br />2 <br />2 <br /><0.005 <br /><0.005 <br />0.0025 <br />ND <br /><0.005 <br />Cadmium, Dissolved (mg/I as Cd) <br />2 <br />2 <br /><0.001 <br /><0.001 <br />0.0005 <br />ND <br /><0.001 <br />Calcium, Total (mg/I as Ca) <br />2 <br />0 <br />8.06 <br />2.54 <br />5.30 <br />3.90 <br />5.3 <br />Chloride,Total in Water mg/I <br />2 <br />0 <br />1.68 <br />1.5 <br />1.6 <br />0.1 <br />1.59 <br />Chromium, Dissolved (mg/I as Cr) <br />2 <br />0 <br />0.004 <br />0.00311 <br />0.0036 <br />0.0006 <br />0.003555 <br />Copper, Dissolved (mg/I as Cu) <br />2 <br />2 <br /><0.005 <br /><0.005 <br />0.0025 <br />ND <br /><0.005 <br />Cyanide Free, mg /I <br />2 <br />2 <br /><0.01 <br /><0.01 <br />0.005 <br />ND <br /><0.01 <br />Cyanide, Total (mg/I as CN) <br />2 <br />2 <br /><0.01 <br /><0.01 <br />0.005 <br />ND <br /><0.01 <br />Fluoride, Total (mg/I as F) <br />2 <br />0 <br />1.61 <br />1.36 <br />1.49 <br />0.18 <br />1.485 <br />Hardness, Total (mg /I as CaCO3) <br />2 <br />0 <br />28.7 <br />8.4 <br />18.6 <br />14.4 <br />18.55 <br />Iron, Dissolved (mg/I as Fe) <br />2 <br />2 <br /><0.05 <br /><0.05 <br />0.025 <br />ND <br /><0.05 <br />Lead, Dissolved (mg /I as Pb) <br />2 <br />2 <br /><0.001 <br /><0.001 <br />0.0005 <br />ND <br /><0.001 <br />Magnesium, Total (mg/I as Mg) <br />2 <br />1 <br />2.07 <br /><0.5 <br />1.2 <br />1.3 <br />0.785 <br />Manganese, Dissolved (mg/I as Mn) <br />2 <br />2 <br /><0.01 <br /><0.01 <br />0.005 <br />ND <br /><0.01 <br />Mercury, Total (mg /I as Hg) <br />2 <br />2 <br /><0.0002 <br /><0.0002 <br />0.0001 <br />ND <br /><0.0002 <br />Nickel, Dissolved (mg/I as Ni) <br />2 <br />2 <br /><0.005 <br /><0.005 <br />0.0025 <br />ND <br /><0.005 <br />Nitrate Nitrogen, Total (mg /I as N) <br />2 <br />0 <br />0.078 <br />0.061 <br />0.070 <br />0.012 <br />0.0695 <br />Nitrite Nitrogen, Total (mg /I as N) <br />2 <br />2 <br /><0.05 <br /><0.05 <br />0.025 <br />ND <br /><0.05 <br />Nitrogen, Ammonia, Total (mg /I as N) <br />2 <br />2 <br /><0.05 <br /><0.05 <br />0.025 <br />ND <br /><0.05 <br />Oil and Grease Visual (No =0, Yes =1) <br />5 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />Oxygen, Dissolved mg /L <br />17 <br />0 <br />6.12 <br />0.2 <br />3.1 <br />1.6 <br />3.5 <br />pH, Field, Standard Units <br />19 <br />0 <br />12.67 <br />9.54 <br />11.14 <br />1.04 <br />11.52 <br />Potassium, Total mg/I as K) <br />2 <br />0 <br />5.34 <br />2.84 <br />4.09 <br />1.77 <br />4.09 <br />Selenium, Dissolved (mg/I as Se) <br />2 <br />2 <br /><0.005 <br /><0.005 <br />0.0025 <br />ND <br /><0.005 <br />Silver, Dissolved (mg /I as Ag) <br />2 <br />2 <br /><0.001 <br /><0.001 <br />0.0005 <br />ND <br /><0.001 <br />Sodium, Total (mg/I as Na) <br />2 <br />0 <br />25.4 <br />25.2 <br />25.3 <br />0.1 <br />25.3 <br />Specific Conductance,Field (umhos /cm @ 25C) <br />18 <br />0 <br />4034 <br />17.6 <br />819 <br />1269 <br />245 <br />Sulfate, Total (mg/I as SO4) <br />2 <br />0 <br />24.6 <br />14.9 <br />19.8 <br />6.9 <br />19.75 <br />Temperature, Water (Degrees Centigrade) <br />19 <br />0 <br />9 <br />5.6 <br />7.2 <br />0.9 <br />7.3 <br />Total Dissolved Solids, mg /I <br />2 <br />0 <br />82 <br />72 <br />77 <br />7 <br />77 <br />Total Suspend Solids, mg/I <br />2 <br />1 <br />17 <br /><10 <br />11 <br />8 <br />3.5 <br />Water Level,Distance From Measuring Point (Feet) <br />23 <br />0 <br />127.29 <br />60.02 <br />66 <br />14 <br />63.01 <br />Weak Acid Dissociable Cyanide, mg /I <br />2 <br />2 <br /><0.01 <br /><0.01 <br />0.005 <br />ND <br /><0.01 <br />Zinc, Dissolved (mg /I as Zn) <br />2 <br />2 <br /><0.05 <br /><0.05 <br />0.025 <br />ND <br /><0.05 <br />TABLE 6 -14 <br />SAMPLE LOCATION: GVMW -6A <br />DRAINAGE: GRASSY VALLEY <br />PERIOD OF RECORD: 1998 -2011 <br />ND = Not determined. Applicable in two cases: number of analyses = 1, or all analyses are non - detect. <br />Non - detect analyses are set at 1/2 the detection hm#t for average and standard deviation calculations. <br />Median calculations use the laboratory analyses with less than detection values as negative <br />