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<br />DESGRIPTIVE STATISTICS AROUND WATER WEl.R-29.48 6O~ITINUED <br />JULY 1, 1999 -APRIL 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 9 9 0.5 0.05 0.27 0.23 <br />Carbon, dissolved organic M415.1 Combustion 9 1 12 5 6.7 2.2 <br />Cation-Anion Balance % Calculation 9 6 1.8 -6.8 -1.5 3.1 <br />Sum of Anions meq/L 9 0 77.7 27.6 65.94 14.84 <br />Sum of Cations meq/L 9 0 73.6 28.6 63.78 13.88 <br />Chloride M325-2 Colorimetric (RFA) 9 0 170 19 130 43 <br />Cond @ 25C (umhos/cm) M120.1 -Meter 9 0 5910 2170 5092 1123 <br />Fluoride M340.21SE 9 0 31 17 27.2 4.1 <br />Hardness as CaC03 SM2340B -Calculation 9 0 44 30 37 5 <br />Nitrate as N, dissolved Calculation N03N02-N02 9 8 0.2 0.01 0.09 0.07 <br />Nitrate/Nitrite as N, dissolved M353.2 Auto Cad Red 9 8 0.2 0.01 0.09 0.07 <br />Ntrite as N, dissolved M353.2 Auto Cad Red 9 9 0.1 0.005 0.043 0.038 <br />pH (units) M150.1 Electrometric 9 0 8.4 7.4 7.8 0.3 <br />Phosphorus, dissolved M365.1 Auto Ascorbic Acid 9 0 0.2 0.02 0.110 0.060 <br />Phosphorus, ortho dissolved M365.1 Auto Ascorbic Acid 9 3 0.79 0.05 0.204 0.232 <br />Total Dissolved Solids M160.1 -Gravimetric 9 0 4000 1490 3482 758 <br />Sodium Absorption Ratio in H2O USGS 11738-78 9 0 122 51.4 102.71 20.08 <br />Sulfate M375.3 -Gravimetric 9 7 10 5 6 2 <br />Sulfide as S SM427C -Mod Methyl Blue 9 6 1 0.04 0.19 0.30 <br />TDS (talc) Calculation 9 0 3920 1510 3461 755 <br />TDS ratio Ratio-measured/calculated 9 0 1.11 0.93 1.01 0.05 <br />Temperature Degrees C (Field) 8 0 15.3 8.7 11.8 2.3 <br />Gross Alpha Result (pCi/L) M9310 9 0 48 0 17.6 16.5 <br />Gross Alpha Error (pCi/L) M9310 9 0 37 9.9 23.4 8.8 <br />Alpha Minimum Detectable <br />Activity (pCi/L) M9310 <br />9 <br />0 <br />24 <br />8 <br />19.1 <br />4.5 <br />Gross Beta Result (pCi/L) M9310 9 0 50 0 15.7 16.9 <br />Gross Beta Error (pCi/L) M9310 9 0 28 10 19.6 4.7 <br />Beta Minimum Detectable <br />Activity (pCilL) M9310 <br />9 <br />0 <br />30 <br />11 <br />26.6 <br />6.1 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />