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• <br />DESCRIP711FE STATISTICS GROUND WATER WELL 21-36 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 12 12 5 0.5 2.04 1.92 <br />Carbon, dissolved organic M415.1 Combustion 12 0 33.5 15 22.0 6.7 <br />Cation-Anion Balance % Calculation 12 6 4 -2.6 0.4 2.1 <br />Sum of Anions meq/L 11 0 642 0 530.88 183.11 <br />Sum of Cations meq/L 11 0 631 0 535.21 185.35 <br />Chloride M325-2 Colorimetric (RFA) 12 0 1260 630 1105 162 <br />Cond @ 25C (umhos/cm) Mt2o.1 -Meter 12 0 38000 3770 32360 10346 <br />Fluoride M340.21SE 12 0 82 30 43.9 13.3 <br />Hardness as CaC03 SM23408 -Calculation 12 0 95 36 63 14 <br />Nitrate as N, dissolved Calculation: N03N02-N02 12 11 0.4 0.01 0.14 0.10 <br />Nitrate/Nitrite as N, dissolved M353.2 Auto Cad Red 12 11 0.4 0.01 0.14 0.10 <br />Nitrite as N, dissolved M353.2 Auto Cad Red 12 11 1.12 0.005 0.144 0.309 <br />pH (units) M150.1 Electrometric 12 0 8.8 7.9 8.2 0.3 <br />Phosphorus, dissolved M365.1 Auto Ascorbic Acid 12 0 2.75 0.09 2.016 0.763 <br />Phosphorus, ortho dissolved M365.1 Auto Ascorbic Acid 12 1 3.35 0.25 2.127 0.852 <br />Total Dissolved Solids M160.1 -Gravimetric 12 0 34100 19100 32396 4215 <br />Sodium Absorption Ratio in H2O USGS 11738-78 12 0 820 578 737.92 72.48 <br />Sulfate M375.3 -Gravimetric 12 4 190 50 86 40 <br />Sulfide as S SM427C -Mod Methyl Blue 12 6 0.75 0.01 0.19 0.20 <br />TDS (talc) Calculation t2 0 33400 19800 31158 3650 <br />TDS ratio Ratio -measured/caicu~ated 11 0 1.11 0 0.95 0.30 <br />Temperature Degrees C (Field) 12 0 18 8.4 12.5 3.0 <br />Gross Alpha Result (pCi/L) M9310 12 0 670 0 219.8 231.5 <br />Gross Alpha Error (pCi/L) M9310 12 0 490 100 225.8 107.7 <br />Alpha Minimum Detectable <br />Activity (pCi/L) M9310 <br />12 <br />0 <br />290 <br />82 <br />166.4 <br />51.5 <br />Gross Beta Result (pCilL) M9310 12 0 350 0 126.8 127.7 <br />Gross Beta Error (pCi/L) M9310 12 0 330 71 174.7 69.1 <br />Beta Minimum Detectable <br />Activity (pCi/L) M9310 <br />12 <br />0 <br />440 <br />94 <br />232.8 <br />87.7 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />