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Am MR 1� <br /> PAGE 1 <br /> TABLE 39 <br /> SUMMARY OF WATER QUALITY DATA <br /> MIDDLE CREEK ABOVE MINE 3. USGS SITE 09243700 (700) <br /> PARAMETER MEAN STD. DE1•. MAX. MIN. UNITS. NO. PERIOD <br /> PHYSICAL PROPERTIES <br /> TEMPERATURE FIELD 10. 113 7. 137 24.000 0.000 DEGREES C 84 10/83- 7/89 <br /> CONDUCTIVITY FIELD 685.291 178. 180 1370.000 310.000 UMHOS/CM 144 9/75- 7/89 <br /> CONDUCTIVITY LAB 763.000 145.652 958.000 455.000 UMHOS/CM 9 10/86- 7/89 <br /> PH FIELD 8.273 0.376 9.800 7.200 PH 140 9/75- 7/89 <br /> PH LAB 6.353 0. 139 8.500 8. 100 PH 6 10/86- 2/88 <br /> ALKALINITY TOTAL 215.486 51 .271 301 .000 110.000 MG/L 74 10/75- 7/89 <br /> HARDNESS TOTAL 303.772 63.856 430.000 148.000 MG/L 80 10/75- 7/89 <br /> SOLIDS DISSOLVED 505.816 96.393 628.000 310.000 MG/L 11 10/86- 7/89 <br /> SOLIDS SUSPENDED <395.343 138.666 3390.000 <1 .000 MG/L 32 11/83- 7/89 <br /> OILAGREASE VISI 2.000 0.000 2.000 2.000 16 7/87- 7/89 <br /> SAR 0.664 0.228 1.046 0.079 37 7/80- 7/89 <br /> CATIONS <br /> CALCIUM DISSOLVED 70.965 13.898 99.000 36.000 MG/L BB 10/75- 7/89 <br /> MAGNESIUM DISSOLVED 30.761 7.310 48.000 14.000 MG/L 88 10/75- 7/89 <br /> SODIUM DISSOLVED 29.054 10.928 50.000 11 .000 MG/L 37 7/80- 7/89 <br /> POTASSIUM DISSOLVED 3.464 1 .970 19.000 1.500 MG/L 79 10/75- 2/88 <br /> ANIONS <br /> BICARBONATE AS HCO3 268.975 65.678 370.000 140.000 MG/L 40 10/75- 7/89 <br /> CARBONATE AS CO3 3.800 2.387 7.000 0.000 MG/L 30 10/75- 8/79 <br /> CHLORIDE 4.624 1 .400 8. 100 1. 100 MG/L 75 10/75- 2/88 <br /> SULFATE 136.280 48. 783 274.000 41.000 MG/L 92 10/75- 7/89 <br /> U = MICRO <br />