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SEMI -ANNUAL TESTING <br />• GROUND WATER QUALITY PARAMETERS <br />SITE: GW-N~6P1 <br />FORMATION: UNDERBURDEN <br />DATE OF COLLECTION 19-Feb-98 13-Aug-96 <br />FIELD PARAMETERS <br />pH 7.59 7.87 <br />Water Temperature (deg C) 12.1 15.6 <br />Conductivity (umhos/cm) 1310 1450 <br />LABORATORY PARAMETERS <br />Metals Analysis <br />Aluminum, dissolved (mg/L) U U <br />Calcium, dissolved (mg/L) 11.2 38.3 <br />Iron, dissolved (mg/L) 0.01 U <br />Lead, dissolved (mg/L) U U <br />Magnesium, dissolved (mg1L) 4.8 34.9 <br />Manganese, dissolved (mg/L) U 0.01 <br />Molybdenum, dissolved (mg/L) U U <br />Potassium (mg/L) 14.3 8.6 <br />Selenium, dissolved (mg/L) U U <br />• <br />Sodium, dissolved (mg/L) 424 1090 <br />Wet Chemistry <br />Alkalinity as CaCO3 <br />Bicarbonate as CaCO3 (mg/L) 770 652 <br />Carbonate as CaCO3 (mg/L) 46 U <br />Hydroxide as CaCO3 (mglL) U U <br />Total Alkalinity 816 652 <br />Cation-Anion Balance <br />Cation-Anion Balance (%) -1 -1.3 <br />Sum of Anions (meq/L) 20.4 54.4 <br />Sum of Cations (meglL) 20 53 <br />Chloride, dissolved (mg/L) 27 46 <br />Conductivity @ 25C (umhos/cm) 1750 4680 <br />Hardness as CaCO3 (mg/L) 48 239 <br />Nitrate as N (mg/L) U 0.07 <br />Nitrate/Nitrite as N (mg/L) U 0.08 <br />Nitrite as N (mg/L) U 0.01 <br />Nitrogen, ammonia (mg/L) 0.64 <br />pH @ 25C 8.3 8.1 <br />Phosphate as PO4 (mg/L) U 3.75 <br />Phosphorus (mg/L) 0.007 1.21 <br />Sodium Absorption Ratio in Water 27 31 <br />Sulfate, dissolved (mg/L) 160 1910 <br />Total Dissolved Solids @ 180C (mg/ 1150 3520 <br />. Total Dissolved Solids, calculated (m 0.97 0.97 <br />1. Negative (-) =less than <br />2. U =not detected at MDL (Minimum Detection Level) <br />c:lda to lypnul wa tzr19819dannhyd. wb3 <br />