2010-12-13_HYDROLOGY - M1980047 (2)

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Site: 549N - Davis Gulch, F13R EXXON COLONY Quarterly Streamflow Samples, 2007 Surface Water: Gallery A DateS-W Dec. 4. 2007 Mar. 20. 2008 June 11. 2008 Sept 10, 2008 is • • M I. PARAMETER Units Result ua Result ua Result Qua[ Result Qua Aluminum, dissolved mg/L U`- 0.07 B U 0.03 B Aluminum, total recoverable mg/L 0.34 ' 5.34 ' 0.63 0.45 Antimony, dissolved mg/L 0.0004 B U U U Antimony, total recoverable mg/L U U U U Arsenic, dissolved mg/L 0.0019 0.0016 0.0021 0.0020 Arsenic, total recoverable mg/L 0.002 0.004 B 0.0026 0.0023 Barium, dissolved mg/L 0.081 0.085 0.093 0.080 Barium, total recoverable mg/L 0.082 0.164 0.092 0.090 ` Beryllium, dissolved mg/L U U U U Beryllium, total recoverable mg/L U U U U Boron, dissolved mg/L 0.04 B` 0.04 B' 0.03 B 0.03 B Boron, total recoverable mg/L 0.03 B 0.04 B 0.04 B' 0.03 B' Cadmium, dissolved mg/L U U U U Cadmium, total recoverable mg/L U U U U Calcium, dissolved mg/L 74.3 70.9 79.3 79.6 Calcium, total recoverable mg/L 69.2 74.5 72.7 81.9 Chromium, Hexavalent mg/L UH• U. U' HU' Copper, dissolved mg/L U U U U Copper, total recoverable mg/L U U U U Iron, dissolved mg/L U U U U Iron, total recoverable mg/L 0.27 4.69 0.52 0.39 Lead, dissolved mg/L U' U U U Lead, total recoverable mg/L U U U U Magnesium, dissolved mg/L 36.0 34.4 37.8 37.7 Magnesium, total recoverable mg/L 22.9 36.1 34.0 38.6 Manganese, dissolved mg/L 0.005 B' U 0.007 B 0.010 B Manganese, total recoverable mg/L 0.008 B 0.090 U 0.018 B Mercury, dissolved mg/L U U U U Mercury, total mg/L U U U. U Molybdenum, dissolved mg/L U U U U Molybdenum, total recoverable mg/L U U U U Nickel, dissolved mg/L U U U U Nickel, total recoverable mg/L U U U U Potassium, dissolved mg/L 0.7 B' 0.5 B 0.7 B 0.5 B' Potassium, total recoverable mg/L 0.5 B 1.8 B' 0.7 B 0.7 B' Selenium, dissolved mg/L U U U. 0.007 ' Selenium, total recoverable mg/L U U. U. U' Silver, dissolved mg/L U. U. U' U Silver, total recoverable mg/L U U U U Sodium, dissolved mg/L 68.6 64.2 66.6 65.5 Sodium, total recoverable mg/L 62.8 63.8 58.1 65.2 Thallium, dissolved mg/L U U. U U Thallium, total recoverable mg/L 0.0009 B' 0.0015 B" 0.0005 B 0.0004 B` Uranium, dissloved mg/L 0.0017 0.0017 ' 0.0018 ' 0.0015 ' Uranium, total recoverable mg/L 0.0018 0.0021 B' 0.0014 0.0018 " Zinc, dissolved mg/L U' U U U Zinc total recoverable m /L U 0.01 B U U ere Total Di eslion ?t3 n e a Oil 8 Grease Total Recoverable m /L 2 B U U U m ? Alkalinity as CaC03 Bicarbonate as CaC03 mg/L 293 233 247 257 Carbonate as CaC03 mg/L 22 11 B 14 B 32 Hydroxide as CaC03 mg/L U U U U Total Alkalinity M /L 316 243 261 289 Cation-Anion Balance Cation-Anion Balance % 4.3 11.5 7.0 1.0 Sum of Anions meq/L 8.9 7.3 8.7 9.7 Sum of Cations meq/1 9.7 9.2 10.0 9.9 Chloride mg/L 3 B 4 B' 59 60 ' Conductivity @25C umhos/cm 800 764 841 873 Fluoride mg/L 0.1 B. U. U. 0.1 B' Hardness as CaCO3 mg/L 334 319 354 354 Nitrate as N, dissolved mg/L 0.46 0.53 0.88 0.68 Nitrate/Nitrite as N, dissolved mg/L 0.46 ' 0.53 0.88 0.68 ' Nitrite as N, dissloved mg/L U' U' U' U' Nitrogen, ammonia mg/L U' U. 0.06 B' U' Nitrogen, total Neldahl mg/L 0.3 B 0.5 B' 0.4 B' 0.3 B` PH (tab) units 8.5 H 8.7 H 8.4 H 8.6 H Phosphorus, ortho dissolved mg/L 0.05 ' 0.1 0.04 B' 0.03 B' Phosphorus, total mg/L 0.04 B' 0.17 0.03 B' 0.15 ' Residue, Filterable(TDS)@ 1 80C mg/L 490 470 480 560 Sodium Absorption Ratio in Water 1.65 1.58 1.56 1.53 Sulfate mg/L 120 110 84 104 Sulfide (as S) mg/L U' U. U. U' TDS (calculated) mg/L 503 437 494 537 TDS (ratio-measured/calculated) mg/L 0.97 1.08 0.97 1.04 Turbidi NTU 3.2 H' 64.8 4.9 5.4 pH measured at 24.0 23.0 23.0 21.0 U = Analyte was analyzed for but not detected at the indicated MI B = Analyte concentration detected at a value between MDL and PQL = Practical Quantitation Limit = Extended Qualifier Report H = Analysis exceeded method hold time.