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1 Jannary 2003 Kerr Coal Company * 2001 Aneual HyAmlogy Report * CO Permit No. C-80-006 ~ PaRe 12_ <br />' .. ~ - TABLE 4 <br />" . "HISTORIC LOADOU'f AREA ALLUVIAL WATER QUALITY DATA °- - <br />" ~ SITE AP,1 - "" - "- ~ ' <br />Parameters - 1997 1998 1999 2000 2001 2002 <br />Temp (°CI 8.6 9.5 11.0 10.0 10.3 13.3 <br />H Isu) 7.8 7.8 7.9 7.9 8.0 6.0 <br />E.C. (mhos/cml @ 20°C 500 467 417 400" 400 383 <br />TDS 363 340 307 303 297 295 <br />SAR lin water) 0.53 0.56 0.64 0.71 0.69 0.61 <br />Calcium (dissolved) 55.3 47.4 45.3 44.3 45.1 45.5 <br />Sodium (dissolved) 22.1 21.6 23.8 25.8 25.1 22.5 <br />Ma nesium (dissolved) 47.8 40.9 37.7 35.3 34.6 35.6 <br />Potassium (dissolved) 1.2 1.1 1.1 1.0 1.2 1.2 <br />Sulfate 36.7 33.3 30.0 33.3 27 20 <br />Chloride 9.0 6.7 4.7 4.3 5 4 <br />Carbonate las CaCO31 <2 <2 3.7 <2 <2 <2 <br />Bicarbonate las CaCO31 324 297 281 268 284 259 <br />Fluoride 0.6 0.5 0.5 <br />Nitrate-Nitro en Idissolvedl <0.02 <0.02 0.07 0.03 0.03 0.26 <br />Iron Idissolvedl 0.09 0.19 0.11 0.12 0.27 0.11 <br />Manganese (dissolved! 0.918 0.581 0.574 0.427 0.450 0.463 <br />Aluminum Idissolvedl <0.03 <0.03 0.023 <br />Barium (dissolved) 0.09 0.092 0.085 <br />Boron Idissolvedl 0.05 0.05 0.05 <br />Cadmium Idissolvedl <0.003 <0.003 <0.003 <br />Chromium Idissolvedl <0.01 <0.01 <0.01 <br />Cop er Idissolvedl <0.01 <0.01 <0.01 <br />Lead (dissolved) <0.04 <0.04 <0.04 <br />Mercur Idissolvedl <0.0002 <0.0002 <0.0002 <br />Mol bdenum (dissolved) <0.01 <0.01 <O.Ot <br />Nickel Idissolvedl <0.01 <0.01 <0.01 <br />Phosphorus lortho dissolved) <0.005 0.009 0.004 <br />Vanadium (dissolved) <0.005 <0.005 <0.005 <br />Notes: All values represent mean values in mg/I unless otherwise noted. Monitoring program parameter list <br />reduced as of 2000. <br />MWH * 1475 Pine Grove Rd, Ste. 109, * Steosnlroat Springy Colomrla 80477 * (970) 879-6260 <br />U"1Y"NK.n f/+'\ffTA~iM HJ.bs nqa~\ILOTN)? N)!dg ILpr, <br />1/]L/OigO <br />