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,1 4 . ..- ~. ~a <br /> <br />DfSC1i1PTIVf.$TATIS7ICS GRQUND WATfR~WEL~.,21-2 COIVTINI~ D, r - <br />,~, <br />JULY 1; 1999 y JULY 31,"2Q00 ° F <br /> <br />Parameter (mg/I) EPA Method TOTAL <br />SAMPLES BELOW <br />DETECTION MAXIMUM <br />VALUE MINIMUM <br />VALUE <br />MEAN VALUE STANDARD <br />DEVIATION <br />Bromide M3001C 13 9 2 0.05 0.31 0.52 <br />Carbon, dissolved organk M415.1 Cwnbustlon 13 0 10 3 4.9 1.7 <br />Cation-Anion Balance % Calculation 13 3 5 -4.7 0.3 2.9 <br />Sum aF Anions meglL 12 0 33.9 27.3 ' 29.90 2.03 <br />Sum of Cations meq/L 12 0 34.7 27.7 29.89 1.90 <br />Chloride M325.2 Colorimetrk (RFA 13 23 10 13 3 <br />Cond @ 25C (umhoslcm) M120.t -Meter 13 0 3630 2090 2364 404 <br />Fluoride M340.21SE 13 0 0.5 0.3 0.4 0.05 <br />Hardness as CaC03 SM2340B -Calculation 13 0 1060 891 981 46 <br />Nitrate as N, dissolved Calculation: N03N02-N02 13 7 0.5 0.01 0.17 0.15 <br />Nitrate/Nitrite as N, dissolved M353.2 Aulo Cad Red 13 8 0.5 0.01 0.16 0.15 <br />Nitrite as N, dissolved M353.2 Auto Cad Red 13 13 0.1 0.005 0.035 0.029 <br />pH (units) M150.1 Electrometric 13 0 8 6.4 7.1 0.4 <br />Phosphorus, dissolved M365. t Auto AscoPok Acid 13 4 0.55 0.005 0.113 0.150 <br />Phosphorus, onho dissolved M365.1 Auto Ascorbic Acid 13 6 0.38 0.0025 0.110 0.138 <br />Total Dissolved Solids Mt6D.1 - Gravlmetric 13 0 2550 1510 1672 272 <br />Sodium Absorption Ratio in H2O USGS 1173&78 13 0 8.85 2.81 3.60 1.62 <br />Sulfate M375.3 - Gravimehtc 13 0 550 530 536 8 <br />Sulfide as S SM427C -Mod Methyl Blue 13 7 1.2 0.01 0.25 0.32 <br />TDS (talc) Calculation 13 0 2550 1560 1740 258 <br />TDS ratio Ratio- measured/calculated 13 0 1.01 0.93 0.96 0.02 <br />Temperature Degrees C (Fleld) 13 0 18.1 8.7 12.1 2.6 <br />Gross Alpha Result (pCi/L) M9310 13 1 20 -7.3 3.8 7.7 <br />Gross Alpha Error (pCl/L) M9310 13 0 19 7 11.5 3.3 <br />Alpha Minimum Detectable <br />Activity (pCilL) M9310 <br />13 <br />0 <br />14 <br />6.6 <br />$.9 <br />1.9 <br />Gross Beta ResuR (pCUL) M9310 13 0 28 0 7.9 9.2 <br />Gross Beta Error (pCi/L) M9310 13 0 15 7.3 9.5 2.0 <br />to inimum etectabe <br />Activity fpCUL) M9310 <br />13 <br />0 <br />19 <br />9.2 <br />12.4 <br />2.3 ' <br /> <br />Analyfe concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations. <br />