Laserfiche WebLink
<br />DESCRIPTIVE STATISTICS GROUND WATER WELL 20.9 CONTINUED <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 t0 10 5 0.05 1.26 1.98 <br />Carbon, dissolved organic M415.1 Combustion 10 0 20 7 12.6 4.4 <br />Cation-Anion Balance % Calculation 10 6 5.4 -4.2 -0.3 3.7 <br />Sum of Anions meq/L 10 0 112 93.1 106.01 5.77 <br />Sum of Cations meq/L 10 0 113 101 105.35 4.66 <br />Chloride M325-2 Colorimetric (RFA) 10 0 390 290 326 32 <br />Cond @ 25C (umhos/cm) M120.1 -Meter 10 0 8820 7700 8275 383 <br />Fluoride M340.21SE 10 0 34 24 28.0 2.8 <br />Hardness as CaC03 SM2340B -Calculation 10 0 48 43 46 2 <br />Nitrate as N, dissolved Calculation: N03N02-N02 10 8 0.2 0.01 0.08 0.06 <br />Nitrate/Nitrite as N, dissolved M353.2 Auto Cad Red 10 8 0.2 0.01 0.08 0.06 <br />Nitrite as N, dissolved M353.2 Auto Cad Red 10 10 0.1 0.005 0.035 0.031 <br />pH (units) M150.1 Electrometric 10 0 8.6 7.7 8.0 0.3 <br />Phosphorus, dissolved M365.1 Auto Ascorbic Acld 10 1 0.25 0.02 0.126 0.075 <br />Phosphorus, ortho dissolved M365.1 Auto Ascorbic Acid 10 4 0.25 0.0025 0.175 0.087 <br />Total Dissolved Solids M160.t -Gravimetric 10 0 5980 5500 5748 180 <br />Sodium Absorption Ratio in H2O USGS 11738-78 10 0 165 147 153.85 6.29 <br />Sulfate M375.3 -Gravimetric 10 10 50 5 14 19 <br />Sulfde as S SM427C -Mod Methyl Blue 10 2 0.6 0.06 0.26 0.18 <br />TDS (talc) Calculation 10 0 5840 5180 5657 210 <br />TDS ratio Ratio-measured/calculated 10 0 1.13 0.96 1.02 0.05 <br />Temperature Degrees C (Field) 10 0 15 9.2 12.3 1.8 <br />Gross Alpha Result (pCi/L) M9310 10 0 53 0 15.7 19.8 <br />Gross Alpha Error (pCi/L) M9310 10 0 62 24 40.2 11.0 <br />Alpha Minimum Detectable <br />Activity (pCi/L) M9310 <br />10 <br />0 <br />40 <br />20 <br />30.9 <br />5.5 <br />Gross Beta Result (pCi/L) M9310 10 0 45 0 10.8 16.5 <br />Gross Beta Error (pCi/L) M9310 10 0 36 20 28.8 4.5 <br />Beta Minimum Delectable <br />Activity (pCi/L) M9310 <br />10 <br />0 <br />46 <br />29 <br />40.2 <br />5.1 <br /> <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />