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<br />DESCRIPTIVE STATISTICS GROUND WATER WELL 29-3 CONTINUED <br />JULY 1, 1999 -JUNE 30, 2000 <br /> <br />Parameter (mg/I) EPA Method TOTAL <br />SAMPLES BELOW <br />DETECTION MAXIMUM <br />VALUE MINIMUM <br />VALUE <br />MEAN VALUE STANDARD <br />DEVIATION <br />Bromide M3001C 11 11 5 0 1.35 1.82 <br />Carbon, dissolved organic M415.1 Combustion 12 0 42 14 22.8 7.6 <br />Cation-Anion Balance % Calculation 12 6 2.5 -82.5 -6.5 24.0 <br />Sum of Anions meq/L 12 0 3760 339 644.00 981.36 <br />Sum of Cations meq/L 12 0 375 347.5 363.25 8.57 <br />Chloride M325-2 Colorimetric (RFA) 12 0 715 369 657 92 <br />Cond @ 25C (umhos/cm) M 120. t -Meter t2 0 24750 21300 24104 972 <br />Fluoride M340.21SE 12 0 36 6.7 28.2 10.1 <br />Hardness as CaC03 SM2340B -Calculation 12 0 75 12 43 17 <br />Nitrate as N, dissolved Calculation: N03N02-N02 12 11 1.9 0.01 0.26 0.52 <br />Nitrate/Nitrite as N, dissolved M353.2 Auto Cad Red 12 11 1.9 0.01 0.26 0.52 <br />Nitrite as N, dissolved M353.2 Auto Cad Red 12 10 1 0.005 0.187 0.314 <br />pH (units) M150.t Electrometric 12 0 8.1 7.8 7.9 0.1 <br />Phosphorus, dissolved M365.1 Auto Ascorbic Acid 12 0 1.23 0.13 0.976 0.341 <br />Phosphorus, ortho dissolved M365.1 Auto Ascorbic Acid 12 3 1.21 0.25 0.883 0.393 <br />Total Dissolved Solids M160.1 -Gravimetric 12 0 20600 19900 20229 216 <br />Sodium Absorption Ratio in H2O USGS 11738-7a 12 0 1060 431 594.38 165.59 <br />Sulfate M375.3 -Gravimetric 12 10 50 5 23 21 <br />Sulfide as S SM427C -Mod Methyl Blue 12 6 1 0.04 0.18 0.26 <br />TDS (talc) Calculation t2 0 20800 12000 18738 2210 <br />TDS ratio Ratio -measured/calculated 12 0 1.08 0.17 0,97 0.25 <br />Temperature Degrees C (Field) 12 0 16.6 8 11.9 2.5 <br />Gross Alpha Result (pCi/L) M93t0 12 2 540 -190 55.3 178.1 <br />Gross Alpha Error (pCi/L) M9310 12 0 270 61 113.7 53.6 <br />Alpha Minimum electable <br />Activity (pCi/L) M9310 <br />12 <br />0 <br />160 <br />59 <br />94.0 <br />25.7 <br />Gross Beta Result (pCilL) M9310 12 1 470 -61 77.8 138.0 <br />Gross Beta Error (pCi/L) M93t0 t2 0 160 64 96.2 27.1 <br />Beta inimum Detectable <br />Activity (pCi/L) M9310 <br />12 <br />0 <br />190 <br />85 <br />126.1 <br />29.4 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />