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<br />DESCRIPTIVE STAfiISTICS GROUND WATER WELL 29.4A CONTINUED <br />JULY 1, 1999 -MARCH 31, 2©d0 <br /> <br />Parameter (m /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 5 0.05 2.51 2.38 <br />Carbon, dissolved or anic M415.1 Combustion 9 0 45 10 17.9 10.6 <br />Cation Anion Balance o Calculation 9 4 8.3 -2.7 1.3 3.7 <br />Sum of Anions me /L e 0 291 0 195.78 79.67 <br />Sum of Cations meq/L 8 0 344 0 200.78 89.46 <br />Chloride M325~2 Colorimetric (RFA) 8 0 3280 0 2158 911 <br />Cond @ 25C (umhos/cm) M120.1 -Meter 9 0 37100 12950 19144 7904 <br />Fluoride M340.21SE 8 0 22.6 0 14.9 6.1 <br />Hardness as CaC03 SM2340B ~ Calculation 9 0 84 41 60 12 <br />Nitrate as N, dissolved Calculation: N03N02 N02 9 7 0.2 0 0.12 0.08 <br />Nitrate/Nitrite as N, dissolved M353.2 Auto Cad Red 9 7 0.2 0.01 0.13 0.07 <br />Nitrite as N, dissolved M353.2 Auto Cad Red 9 9 0.1 0.005 0.056 0.036 <br />pH (units) M150.1 Electrometric 9 0 8.5 7.3 8.2 0.3 <br />Phosphorus, dissolved M365.1 Auto Ascorbic Acid 9 0 1.5 0.065 0.692 0.410 <br />Phos horns, ortho dissolved M365.1 Auto Ascorbic Acid 9 0 2 0.30125 0.988 0.488 <br />Total Dissolved Solids M160.1 ~ Gravimetric 9 0 40000 10700 16656 22 <br />Sodium Absorption Ratio in H2O USGS 11738-78 9 0 753 229 348.11 160.47 <br />Sulfate M375.3 -Gravimetric 9 1 300 30 68 <br />Sulfide as S SM427C -Mod Meth I Blue 9 2 4.3 0.01 1.95 1.57 <br />TDS (talc) Calculation 9 0 36000 9730 14892 8176 <br />TDS ratio Ratio measured/calculated 8 0 1.265 0 1.00 0.38 <br />Temperature De rees C (Field) 9 0 15.3 8.7 11.8 2.3 <br />Gross Alpha Result (pCi/L) M9310 9 1 220 -29 44.7 75.6 <br />Gross Alpha Error ( Ci/L M9310 9 0 250 38 106.7 64.0 <br />p a inimum a ec a e c Ivi y <br />(pCi/L) M9310 <br />9 <br />0 <br />220 <br />37 <br />79.8 <br />57.7 <br />Gross Beta Result (pCi/L) M9310 9 1 280 -49 55.4 100.2 <br />Gross Beta Error (pCi/L) M9310 9 0 270 39 91.1 73.5 <br />e a Inimum a ec a e c rvi y <br />(pCi/L) M9310 <br />9 <br />0 <br />360 <br />53 <br />113.7 <br />97.4 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />