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EFCI Southfield Mine -Year 2007 Annual Hydrology Report April 21, 2008 <br />TABLE 16 <br />SECOND ALKALI CREEK WATER QUALITY DATA <br />(Monitoring Point SA-1) <br /> <br />PARAMETER <br />UNITS 2007 Sample Date: <br />2nd QTR. 4th QTR. 2007 <br />AVERAGE 1991 - 2007 <br />MIN. AVE. MAX. <br /> No Flow No Flow No Flow <br />pH (field) units 7.20 7.72 8.00 <br />Conductiv' (field) umhos/cm 107.0 267.4 440.0 <br />Tem rature (field) d C 8.3 14.3 19.2 <br />Solids, total sus nded m 0 150 874 <br />Solids, total dissolved m 108 358 930 <br />Oil and Grease (visual) es/no n no no <br />SAR in water m 0.0 2.0 3.9 <br />Bicarbonate as CaC03 m 60 110 205 <br />Calcium m 19.5 36.7 69.9 <br />Chloride m 1.00 4.00 10.00 <br />Ma nesium m /I 5.30 13.98 32.70 <br />Nitro en, nitrate nitrite m 0.00 0.04 0.08 <br />Selenium m 0.00 0.00 0.00 <br />Phosphorus,ortho m 0.11 0.15 0.18 <br />Phos horns, total m 0.22 0.22 0.22 <br />Sodium m 13.10 63.06 157.00 <br />Sulfate 30 182 470 <br />Aluminum m 0.84 3.08 5.89 <br />Arsenic m 0.00 0.00 0.00 <br />Cadmium m 0.0000 0.0000 0.0000 <br />Co per m n 0.00 0.00 0.00 <br />Iron m 0.17 1.90 4.36 <br />Lead m 0.00 0.00 0.00 <br />Man anese m 0.00 0.02 0.04 <br />Mercu m 0.0000 0.0000 0.0002 <br />Mol bdenum m 0.00 0.00 0.00 <br />Zinc m 0.00 0.02 0.03 <br />NOTES: <br />1. Zero data values =parameter was analyzed for but not detected. <br />2. Blank data fields = no data. <br />2007 AHR.doC WP Page 28 <br />