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EFCI Southfield Mine -Pear 2006 Annual Hydrology Report Apri125, 2007 <br />€ TABLE 12 <br />OAK CREEK (UPSTREAM) WATER QUALITY DATA ____ _ ____ <br />I-- ,- - -- ----____. _ <br />{ ~ (Monitoring Point OC-2) ! <br />€ € ( ~ ( c I I <br />~ 2006 Sam le Date: € <br />f 2nd QTR. 4th QTR. ( 2006 1997 - 2005 <br />€PARAMETER UNITS ~ AVERAGE j MIN. AVE. MAX. ~ <br /> Na Flow No Flow No Flow ~ <br />pH field) units 7.700 8.342 9.200 <br />Conductivi field umhos/cm ~ 323.000 579.385:1162.000 <br />iTemperature feld deg C 3.800 10.762 21.900 <br />Solids, total suspended _ mg/I__ 0.000 70.1 <br />5 <br />4 '. 290.000 <br />Solids, total dissolved m /I ___ <br />-~ _____ 240.000 _ <br />_ <br />470.000 ! 780.000 <br />Oil and Grease visual) yes/no ~ 0.000 ~ 0.000: 0.000 <br />TSAR in water mg/I 0.000 0.804 ! 1.300 <br />Bicarbonate as CaC03 m /I 145.000 213.615 265.000 <br />Calcium TR m /I 43.400 I 80.723 ' 126.000 <br />Chloride mg/I 3.000 8.308 ', 13.000 <br />(Magnesium TR mg/I 13.900 23.046 ' 36.300 <br />Nitro en, nitrate nitrite m /I 0.000 0.235 ! 0.740 <br />Selenium TR mg/I 0.000 0.001 0.002 <br />Phos horns, ortho mg/I 0.000 0.025 0.138 <br />Sodium mg/I 15.400 39.346 '. 74.200 <br />Sulfate <br />-'-- --- <br />Aluminum TR mg/I <br />--- <br />m /I <br />----'--- <br />-------.. <br />~---- 50.000 <br />-- - <br />0.060 160.769 ' 370.000 <br />---------------- <br />2.225 7.870 <br />,Arsenic TR mg/I 0.0000 0.0007 0.0030 <br />Cadmium TR mg/I 0.000 0.000 ~ 0.006 <br />Copper TR mg/I 0.000 0.002 0.010 <br />Iron TR mg/l 0.040 2.375: 8.840 <br />Lead TR mg/I 0.000 0.000 I 0.000 <br />Manganese TR mg/I 0.005 0.066 0.222 <br />Mercu T mg/I 0.0000 0.0000 ; 0.0003 <br />Molybdenum TR mg/I 0.000 0.000 ' 0.000 <br />Zinc TR mg/I 0.000 0.015 !. 0.070 <br /> <br />NOTES: __ _ ' <br />_ _ <br />1. Zero data values =parameter was analyzed for but not detected. _ _____ <br />____ ___ <br />2. Blank data fields = no data. <br />6417/2006 annualhydrpt.doc NWCC INC. Page 27 <br />