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SEMI -ANNUAL TESTING <br />• <br />GROUND WATER QUALITY PARAMETERS <br />SITE: GW-N40 <br />C~ <br />• <br />DATE OF COLLECTION <br />FIELD PARAMETERS <br />24-Feb-98 12-Aug-98 <br />pH 7.02 7.17 <br />Water Temperature (deg C) 7.04 15.7 <br />Conductivity (umhos/cm) 1900 2400 <br />LABORATORY PARAMETERS <br />Metals Analysis <br />Aluminum, dissolved (mg/L) U 0.08 <br />Calcium, dissolved (mg/L) 662 645 <br />Iron, dissolved (mg/L) U 0.26 <br />Lead, dissolved (mg/L) U U <br />Magnesium, dissolved (mg/L) 93 95.6 <br />Manganese, dissolved (mg/L) 0.18 1.17 <br />Molybdenum, dissolved (mg/L) U U <br />Potassium (mg/L) 3.1 4.2 <br />Selenium, dissolved (mg/L) U 0.014 <br />Sodium, dissolved (mglL) 46.9 67.1 <br />Wet Chemistry <br />Alkalinity as CaCO3 <br />Bicarbonate as CaCO3 (mg/L) 257 345 <br />Carbonate as CaCO3 (mg/L) U U <br />Hydroxide as CaCO3 (mglL) U U <br />Total Alkalinity 257 345 <br />Cation-Anion Balance <br />Cation-Anton Balance (%) 3.6 -0.8 <br />Sum of Anions (meq/L) 40 44 <br />Sum of Cations (meq/L) 43 43.3 <br />Chloride, dissolved (mg/L) 16 19 <br />Conductivity @ 25C (umhoslcm) 2420 3000 <br />Hardness as CaCO3 (mg/L) 2040 2010 <br />Nitrate as N (mg/L) 0.07 0.08 <br />NitratelNitrite as N (mg/L) 0.08 0.08 <br />Nitrite as N (mg/L) 0.01 U <br />Nitrogen, ammonia (mg/L) 0.11 0.21 <br />pH @ 25C 7.7 7.4 <br />Phosphate as PO4 (mg/L) U U <br />Phosphorus (mg/L) U U <br />Sodium Absorption Ratio in Water 0.47 0.65 <br />Sulfate, dissolved (mg/L) 1640 1740 <br />Total Dissolved Solids @ 180C (mg/ 2620 2780 <br />Total Dissolved Solids, calculated (m 1.06 1.08 <br />1. Negative (-) =less than <br />2 U =not detectetl at MDL (Minimum Detection Level) <br />c:lda [a lcg~rolwa [er193193a nnhyd. wb3 <br />