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TABLE 24. WATER QUALITY /N RALSTON CREEK <br />1998 - 2007 <br />STATION SW-DIS001 <br />;onductivity (umhos) <br />'otal dissolved solids <br />'otal suspended solids <br />iardness, total <br />;arbonate <br />3icarbonate <br />\Ikaliniry, Dissolved <br />~Ikaliniry, total <br />Vitrate Nitrogen <br />4mmonia, total <br />Calcium <br />Sodium, dissolved <br />Magnesium, dissolved <br />Potassium, dissolved <br />Sulfate <br />Fluodde, total <br />Chloride <br />Phosphorous <br />Aluminum, dissolved <br />Aluminum, total <br />Antimony, dissolved <br />Antimony, total <br />Arsenic, dissolved <br />Arsenic, total <br />Barium, dissolved <br />Badum. total <br />Cadmium, dissolved <br />Chromium, dissolved <br />Cyanide, total <br />Copper <br />Copper, dissolved <br />Copper, total <br />Iron, dissolved <br />Iron, total <br />Iron, suspended <br />Iron, Fertous (Fe2+) <br />Iron, Fertic (Fe3+) <br />Lead, dissolved <br />Lead, total <br />Manganese, dissolved <br />Mercury, total <br />Molybdenum, dissolved <br />Vickel, dissolved <br />Selenium, dissolved <br />Silver, dissolved <br />Silver, total <br />thallium, dissolved <br />Vanadium, dissolved <br />Thallium, total <br />Zinc, dissolved <br />Zinc, total <br />Uranium, dissolved <br />Uranium, suspended <br />Uranium, total <br />Thorium-228, dis. (pCi/I <br />Thorium-230, dis. (pCi/ <br />Thorium-232, dis. (pCi/ <br />Radium-228, dis. (pCi/t <br />Radium-228, susp. (pC <br />Radium-228, total (pCu <br />Gross Alpha, dis. (pCi/I <br />001 DIS001 DIS001 DIS001 DIS001 DIS001 DIS001 DIS001 DIS001 DIS001 DIS001 MIN MAX MEAN MEDIAN COUNT ND % ND <br />DIS <br />11119198 1 2/17/98 1/19199 3!15199 4/19/99 5/17199 6114/99 7/14/99 9/14/99 3/28/01 10/29104 8 <br />0 95 <br />7 8 0 0% <br />8.7 7.8 7.8 7.9 8 7.9 8 8.1 7.8 <br />138 8.7 <br />1460 . <br />1209 . <br />1375 8 0 0% <br />1480 1400 1420 1410 1310 1180 138 1350 445 445 1090 921 953 9 0 0% <br />1090 1060 1030 1050 927 866 870 953 <p <14 <br />5 4.1 3.5 8 2 25% <br />4 1 3 0 14.5 0 <10. <10. , <br />390 . <br />430 407 400 3 0 0% <br />430 390 400 <br />Na <br />Na <br />Na <br />Na <br />0 <br />0 <br />Na <br /> 146 146 148 148 148 1 0 0% <br /> 180 170 180 210 <170. <210. 185 180 4 0 0% <br />190 230 210 190 180 170 119 119 230 184.1 190 7 <br />8 0 <br />1 0% <br />13% <br />7.7 6.3 5.4 4.6 4.6 <0.1 2.9 2.9 <0.1 <7.7 4.31 <br />31 <br />0 4.6 <br />25 <br />0 8 3 38% <br />1 0 0 0 0 <1. <br />77 <br />5 <1. <t. <br />73.9 78.9 34.1 68.8 0 <br />34.1 <1. <br />80 . <br />70.3 . <br />75.5 8 0 0% <br />80 77 74 . <br />132 180 165 13.5 27.2 13.5 185 121 155 8 0 0% <br />150 160 160 9 <br />42 47 <br />8 54.8 11.8 11.8 58 44.9 49 7 0 0% <br />56 49 52 . . <br />5 <br />9 8 <br />5 1 <br />8 1.8 8.5 5.54 6.3 7 0 0% <br />6.4 6.3 6.4 440 5.5 <br />420 430 . <br />470 . . <br />63.2 176 6 <br />. X ' 5 <br />560 510 520 510 ; <br />5 1.5 1 <br />5 1 <br />5 3 0 0% <br />1.5 1.5 1.5 <br />34 <br />23 <br />26 <br />27 <br />18'1 <br />27 <br />1 <br />2 <br />25 28 29 29 n/a Na Na Na 0 0 Na <br /> <0 <br />1 <0.2 <0.2 0.1 0.5 0.16667 0.175 8 8 100% <br /><0.5 <0.5 <0.5 . <0.1 0.1 0.1 0.05 0.05 1 1 100% <br /> 014 018 <br />0 0.01 0.013 0.021 <0.001 <0.001 c0.001 <0.021 0.0119 0.014 8 2 25% <br />0.018 0. . <0.05 0.05 0.05 0.025 0.025 1 1 100% <br /> 007 <br />0 <0.005 <0.005 0.003 0.007 0.0034 0.0025 4 3 75% <br /><0.003 . <0.001 0.001 0.003 0.00117 0.0015 3 3 100% <br /> <0.003 <0.003 1 <br /><0 <0 <br />1 0.04 0.1 0.0475 0.05 4 3 75% <br />0 ~ <0.1 . . 0.04 0.04 0.04 0.04 2 0 0% <br /> 0.04 0.04 0 <br />002 <0 <br />001 <0.001 0.001 0.002 0.001 0.001 6 5 83% <br /><0.002 <0.002 <0.002 . <br />025 . <br />0.31 0.29 0.25 0.31 0.28333 0.29 3 0 0% <br /> 001 <br /><0 0.0002 0.001 0.0003 0.0003 4 4 100% <br /><0.0002 <0.0002 <0.001 . <0 <br />005 <0.005 0.0025 0.0025 4 4 100% <br /><0.005 <0.005 <0.005 <0.005 <0 <br />01 . <br /><0.01 <0.01 0.0 0.005 1 1 100% <br /> . Na Na n/a Na 0 0 n/a <br /> 005 <br /><0 005 <br /><0 <0.005 <0.005 <0.005 0.1 0.01857 0.0025 7 6 88% <br /><0.02 0.1 <0.02 . . <0.005 <0.01 0.005 0.01 0.00375 0.00375 2 2 n/a <br /> <0 <br />1 <0.1 <0.03 <0.03 <0.03 <0.1 0.025 0.015 7 7 100% <br /><0.03 <0.03 <0.03 . 0.15 0.15 0.15 0.15 0.15 1 0 Na <br /> Na Na Na Na 0 0 n/a <br /> n/a Na Na Na 0 0 Na <br /> Na Na n/a Na 0 0 n/a <br /> <0 <br />005 <0.005 <0.005 <0.002 <0.005 0.0021 0.0025 4 4 100% <br /><0.002 . <0.05 <0.002 0.05 0.00967 0.003 3 2 67% <br /> <0.002 0.003 <0 <br />01 <0.01 0.12 0.01 0.12 0.0250 0.005 6 4 67% <br />0.01 <0.01 <0.01 . 0.13 0.13 0.13 0.13 0.13 1 0 0% <br /> <0.0002 <0.0002 0.0001 0.0001 3 3 100% <br /><0.0002 <0.0002 <0.0002 <0.001 0.001 0.001 0.0005 0.0005 1 1 100% <br /> 314 <br />0 0.744 0.613 0.081 0.081 1.05 0.6474 0.7440 7 0 0% <br />1.05 0.9 0.85 . <br /><0 <br />01 <0.01 <0.01 <0.01 <0.04 0.0125 0.0125 6 6 100% <br /><0.04 <0.04 <0.04 . <br />01 <br /><0 01 <br /><0 <0.01 <0.005 <0.01 0.0038 0.0038 6 8 100% <br /><0.005 <0.005 <0.005 . . 0002 <br /><0 <0.01 0.0014 0.0003 4 4 100% <br /><0.001 <0.0002 <0.0002 <0.01 <0.01 . <br />0.01 0.01 0.005 0.005 1 1 100% <br />001 <br /><0 0 <br />002 0 <br />002 <0.001 <0.001 0.002 <0.001 <0.001 0.002 0.0011 0.0005 7 4 <br />4 57% <br />100% <br />. . . <0 <br />01 <0.01 <0.01 0.005 0.005 4 <br /><0.01 <0.01 <0.01 . <0.001 <0.1 0.001 0.1 0.02525 0.02525 2 2 100% <br /> 01 <br /><0 <0 <br />01 <0.01 <0.005 <0.01 0.0038 0.0038 8 6 100% <br /><0.005 <0.005 <0.005 . . 0.06 0.06 0.06 0.06 0.08 1 0 0% <br />0113 <br />0 0044 <br />0 0058 <br />0 0.0044 0.0053 0.0065 0.0091 0.0107 0.0038 0 O 5 9 4 44% <br />. . <br />001 . <br />0002 <br />0 0001 <br />0 0001 <br />0 <0 <br />002 <0.002 <0.002 <0.000 3 0.0001 0.002 O.G 0.0002 <br />0.0004 0.0 . . . . n/a Na Na Na 0 0 n/a <br /> Na Na Na Na 0 0 #DIV/0! <br />-) 0 <br />2 0 <br />2 0.2 0.2 1 0 0% <br /> 0.2 . <br />0 . <br />0 <br />0 <br />0 <br />1 <br />0 <br />0% <br /> 0 <br />5 0 <br />0 <br />5 4 <br />0 1 <0. 2 0.2 1.3 0.69 0.5 7 1 14% <br />,) 1.3 1 . . <br />0 . <br />0 <0. 2 0 0.2 0.01429 0 7 1 14% <br />i/L 0 0 0 0 nla Na nla Na 0 0 Na <br />L) <br />4 <br />7 <br />5.7 4.7 50 17.8 7.85 4 0 0% <br />-) 10 50 . 3 <br />5 <5. 33 11.8 5.85 4 1 25% <br />8.4 33 <5. . <br />NOTES: Mean and median statistic calculated using one-half detection limit (12 D.L.) <br />ND = number of non-detects <br />Results are in mglL unless otherwise noted <br />Page 7 of 25 <br />WhetsM~Assoc/ates• <br />