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<br />u <br />• <br />SEMI -ANNUAL TESTING <br />GROUND WATER QUALITY PARAMETERS <br />SITE: GW-N13 <br />FORMATION: UNDERBURDEN <br />DATE OF COLLECTION <br />19-Feb-98 12-Aug-98 <br />FIELD PARAMETERS <br />pH 6.83 6.9 <br />Water Temperature (deg C) 12.6 10.2 <br />Conductivity (umhos/cm) 2175 2,500 <br />LABORATORY PARAMETERS <br />Metals Analysis <br />Aluminum, dissolved (mg/L) 0.07 U <br />Calcium, dissolved (mg/L) 349 340 <br />Iron, dissolved (mg/L) 0.7 0.39 <br />Lead, dissolved (mg/L) U U <br />Magnesium, dissolved (mg/L) 178 197 <br />Manganese, dissolved (mg/L) 0.6 0.11 <br />Molybdenum, dissolved (mg/L) U U <br />Potassium (mg/L) 21.7 23.6 <br />Selenium, dissolved (mg/L) U U <br />Sodium, dissolved (mglL) 114 126 <br />Wet Chemistry <br />Alkalinity as CaCO3 <br />Bicarbonate as CaCO3 (mg/L) 523 543 <br />Carbonate as CaCO3 (mg/L) U U <br />Hydroxide as CaCO3 (mg/L) U U <br />Total Alkalinity 523 543 <br />Cation-Anion Balance <br />Cation-Anion Balance (%) -2.8 -0.1 <br />Sum of Anions (meq/L) 40 39.4 <br />Sum of Cations (meq/L) 37.8 39.3 <br />Chloride, dissolved (mg/L) 36 36 <br />Conductivity @ 25C (umhos/cm) 2840 2850 <br />Hardness as GaCO3 (mg/L) 1600 1660 <br />Nitrate as N (mg/L) U 0.11 <br />Nitrate/Nitrite as N (mg/L) U 0.12 <br />Nitrite as N (mg/L) U 0.01 <br />Nitrogen, ammonia (mg/L) 1.45 U <br />pH @ 25C "7 7.2 <br />Phosphate as PO4 (mg/L) U 3.38 <br />Phosphorus (mg/L) U 1.09 <br />Sodium Absorption Ratio In Water 1.25 1.36 <br />Sulfate, dissolved (mg/L) 1360 1310 <br />Total Dissolved Solids @ 180C (mg/ 2,380 2,360 <br />Total Dissolved Solids, calculated ( 1.05 1.09 <br />1. Negative (-) =less than <br />2. U =not detected at MDL (Minimum Detection Level) <br />c:lda to lgprc\wacer\98\98a nnhyd. wb3 <br />