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• GROUNDWATER CHEMICAL ANALYSIS Monitoring Well Number OW-2 Location $TORMKtNG Geologic Unit Monitored SHALLOW Ground Elevation (ft-amsl) 6320 Date of Collection 12/10/81 03/27/82 06/21/82 09/20/82 12/21/82 FIELD PARAMETERS Conductivity (umhos/cm at 25 (C)) 2200 1975 2300 2100 1750 pH (units) 6.8 7,23 7.48 7,48 7.6 Water Temperature (C) 9,0 5 8 B,5 7,5 LABORATORY PARAMETERS Alkalinity (as CaC03) 590 490 545 570 550 Aluminum -0.1 -0.1 0.1 0.2 -0.1 Arsenic -.Ot -0,01 -0.01 -0.01 Barium 0.8 0.7 0.5 0.6 0.3 Bicarbonate 720 590 655 685 660 Boron 0.11 0.13 0.08 0.13 O.t1 Cadmium -0.001 -0.01 -0.01 -0.01 -0.01 Calcium 120 67 105 93 125 Carbonate -0.1 -0,1 -0,1 -0.1 -O.t Cation - Anion Balance (~) 3 ,21 1.36 -1.18 .54 -,71 • Chloride 150 140 130 115 91 Chromium -0.01 -0.01 -0.01 -0.01 -0.01 conductivity (umhos/cm at 25 (C)) 1320 2120 1850 2070 1790 Copper -0.01 -O.Ot -0.01 -0.01 -0.01 Fluoride 0.5 0.46 0.37 0.50 0.45 Hardness (as CaC03) 490 430 425 400 390 Iron (dissolved) 0.08 0.01 1,4 0,10 0.02 Lead 0.02 0.03 0.02 0.02 -0.01 Magnesium 47 42 41 41 20 Manganese 1,3 1.6 2. 2,2 1,7 Mercury (ug/1) -1,0 -1,0 -1,0 -1,0 -1,0 Molybdenum -0.1 -0.01 0.2 -0.1 -0.1 Nitrogen - Ammonia -0.3 0.43 0.59 0,63 0.39 Nitrate as N 0.1 0.27 0.61 1,3 -0.05 pH (units) 7,7 7,5 7.5 7,6 7,6 Phosphate ,31 ,61 1.1 0,76 ,46 Phosphorus -0.1 0.20 ,36 .27 0.15 Potassium 15 17 13 22 15.0 SAR (units) 7,25 8.49 7.34 7,39 5.92 Selenium -0.01 -0.01 -0.01 -0.01 -0.01 Sodium 370 360 350 340 270 Solids, Total Dissolved 1470 1390 1410 1360 1020 Sulfate 500 475 440 435 305 Zinc 0.01 -0.01 0.03 0,06 0.03 t All measurements are In milli grams per Ilter (mg/I) unless otherwise noted. . A minus sign indicat es conce ntrations below analyt ical detection limits. 2 Negative acidity indi cates th at the water Is alkaline. 3 A negative balance in dicates that cations exceed an ions. REV: 05/10/84