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SEMI -ANNUAL TESTING <br />• GROUND WATER QUALITY PARAMETERS <br />SITE: GW-N27 <br />DATE OF COLLECTION 24-Feb-98 12-Aug-98 <br />FIELD PARAMETERS <br />pH 6.94 6.53 <br />Water Temperature (deg C) 12.6 15.2 <br />Conductivity (umhos/cm) 1490 750 <br />LABORATORY PARAMETERS <br />Metals Analysis <br />Aluminum, dissolved (mg/L) U 0.43 <br />Calcium, dissolved (mg/L) 225 110 <br />Iron, dissolved (mg/L) U 0.11 <br />Lead, dissolved (mg/L) U U <br />Magnesium, dissolved (mglL) 98.6 37.3 <br />Manganese, dissolved (mg/L) 0.283 0.414 <br />Molybdenum, dissolved (mglL) U U <br />Potassium (mglL) 28.6 8 <br />Selenium, dissolved (mglL) U U <br />• <br />Sodium, dissolved (mg/L) 91.3 38 <br />Wet Chemistry <br />Alkalinity as CaCO3 <br />Bicarbonate as CaCO3 (mg/L) 600 100 <br />Carbonate as CaCO3 (mg/L) U U <br />Hydroxide as CaGO3 (mg/L) U U <br />Total Alkalinity 600 100 <br />Cation-Anion Balance <br />Cation-Anion Balance (%) -1 0 <br />Sum of Anions (meq/L) 24.7 10.5 <br />Sum of Cations (meq/L) 24.2 10.5 <br />Chloride, dissolved (mg/L) 26 19 <br />Conductivity @ 25C (umhos/cm) 1870 945 <br />Hardness as CaCO3 (mg/L) 968 428 <br />Nitrate as N (mg/L) U 0.29 <br />Nitrate/Nitrite as N (mglL) U 0.29 <br />Nitrite as N (mg/L) U U <br />Nitrogen, ammonia (mg/L) 0.94 0.16 <br />pH @ 25C 7.2 6.2 <br />Phosphate as PO4 (mg/L) U 2.54 <br />Phosphorus (mg/L) U 0.818 <br />Sodium Absorption Ratio in Water 1.29 0.8 <br />Sulfate, dissolved (mg/L) 570 380 <br />Total Dissolved Solids @ 180C (mg/ 1400 655 <br />Total Dissolved Solids, calculated ( 0.99 1.13 <br />7. Negative (-) =less than <br />2. U =not detected at MDL (Minimum Detection Level) <br />C:\da ea', gpro', wa [er\38', 9Barmhyd.~wb3 <br />