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Table A8 CRMW-3B Water chemistry summary statistics <br />Station Identification: CRMW-3B <br />Location: Arequa Gulch <br />Station type: Groundwater <br />Period of Record Start: December 7, 1993 <br />Period of Record End: January 22, 2008 <br />• <br /> <br />Parameters <br />Units <br />Number of analytes Number of <br />nondetected values Maximum <br />value Minimum <br />value Average Standard <br />deviation <br />Field Parameters <br />Water Level ft bgl 104 0 31.68 3.60 22.72 7.91 <br />Water Temp, C C 103 0 55.3 5.4 9.1 4.8 <br />Conductivity µmhos 102 0 2210.00 1040.00 1536.79 257.82 <br />pH su 103 0 7.1 6.1 6.8 0.2 <br />Dissolved Oxygen mg/1 79 1 3.80 <0 0.37 0.62 <br />General Parameters <br />Total Dissolved Solids mg/1 102 0 1690 800 1268 153 <br />Acidity mg/1 102 30 46.0 <1 12.2 9.1 <br />Alkalinity as CaCO3 mg/1 57 0 142 65 113 19 <br />Ammonia mg/1 103 102 0.20 <0.05 0.05 0.04 <br />Hardness mg/l 103 0 1070 520 790 94 <br />Total Suspended Solids mg/l 103 86 170 <5 7 16 <br />Special Parameters <br />CN, Free mg/l 104 104 <0.05 <0.01 0.01 ID <br />WAD CN mg/1 104 80 0.02 <0.005 0.01 0.002 <br />Major Anions <br />Bicarbonate ion (as CaCO3) mg/1 79 0 170 79 129 18 <br />Carbonate ion (as CaCO3) trig/1 68 68 <10 <0 4 ID <br />Chloride mg/1 103 1 155.00 <3 43.12 33.49 <br />Fluoride mg/l 104 0 9.90 3.10 4.30 0.95 <br />Nitrate mg/1 103 12 9.65 <0.05 2.87 2.10 <br />Sulfate mg/1 104 0 950.00 200.00 726.38 101.15 <br />Major Cations <br />Calcium mg/1 100 0 330.00 177.00 250.05 30.92 <br />Magnesium mg/1 100 0 59.00 1.36 39.61 7.61 <br />Potassium mg/l 100 0 18.00 7.28 10.87 1.76 <br />Sodium mg/l 100 0 79.10 6.10 51.50 13.19 <br />Trace Metals <br />Arsenic, (dissolved) mg/1 45 44 0.005 <0.005 0.003 0.0004 <br />Cadmium, (dissolved) mg/l 104 75 <0.01 <0.0001 0.001 0.001 <br />Chromium, (dissolved) mg/1 103 90 0.010 <0.001 0.001 0.002 <br />Copper, (dissolved) mg/1 104 98 <0.05 <0.005 0.003 0.002 <br />Iron, (dissolved) mg/l 104 80 1.40 <0.01 0.17 0.37 <br />Lead, (dissolved) mg/1 103 100 <0.005 <0.001 0.0011 0.0009 <br />Manganese, (dissolved) m9/1 105 0 10.40 0.07 4.78 1.46 <br />Mercury, (dissolved) m9/1 19 19 <0.0001 <0.0001 0.0001 ID <br />Nickel, (dissolved) mg/1 104 50 <0.05 <0.002 0.01 0.01 <br />Selenium, (dissolved) mg/1 101 98 <0.05 <0.005 0.0048 0.0062 <br />Silver, (dissolved) mg/1 104 104 <0.005 <0.0 )01 0.0005 ID <br />Zinc, (dissolved) mg/l 105 24 0.10 <0.05 0.05 0.02 <br />NA: Not analyzed <br />ID: Insufficient data <br />Nondetects set to %z detection limit for calculations <br />0