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PAGE 1 <br /> TABLE 17 <br /> SUMMARY OF WATER QUALITY DATA <br /> NO. 9 MINE WELL. TWENTYMILE SANDSTONE <br /> PARAMETER MEAN STD. OEV. MAX. MIN. UNITS. NO. PERIOD <br /> PHYSICAL PROPERTIES <br /> TEMPERATURE FIELD 13.963 3.040 22.300 10.000 DEGREES C 36 5/82-10/89 <br /> CONDUCTIVITY FIELD 824.525 486.427 3500.000 462.000 UMHOS/CM 40 1/62-10/89 <br /> CONDUCTIVITY LAB 918.750 1071 .392 4320.000 570.000 UMHOS/CM 12 3/81- 6/89 <br /> PH FIELD 7.457 0.432 8.700 6.600 PH 40 1/82-10/89 <br /> PH LAB 7.751 0.367 8.300 7.000 PH 12 3/81- 6/89 <br /> ALKALINITY TOTAL 309.583 31 .615 400.000 280.000 MG/L 12 3/81- 6/89 <br /> ACIDITY AS CACD3 0.000 0.000 0.000 0.000 MG/L 1 3/85 <br /> HARDNESS TOTAL 412.000 305.283 1330.000 264.000 MG/L 11 3/81- 6/89 <br /> SOLIDS DISSOLVED 659.500 879.708 3450.000 355.000 MG/L 12 3/81- 6/89 <br /> SOLIDS SUSPENDED 18.000 5.656 22.000 14.000 MG/L 2 3/81- 3/85 <br /> SAR 1 . 117 2.329 8.507 0.260 12 3/91- 6/89 <br /> CATIONS <br /> CALCIUM DISSOLVED 80.000 3. 162 84.000 77.000 MG/L 4 6/83- 6/89 <br /> CALCIUM TOTAL RECO 99.000 57.492 241 .000 71 .000 MG/L B 3/81-12/82 <br /> MAGNESIUM DISSOLVED 32.000 3.559 35.000 27.000 MG/L 4 6/83- 6/89 <br /> MAGNESIUM TOTAL RECO 49.587 51 .491 177.000 30.000 MG/L 8 3/81-12/82 <br /> SODIUM DISSOLVED 15.500 4.654 22.000 11.000 MG/L 4 6/83- 6/89 <br /> SODIUM TOTAL RECO 106.875 244.950 713.000 13.000 MG/L 8 3/81-12/82 <br /> POTASSIUM DISSOLVED 1 .600 D.ODD 1 .60D 1 .600 MG/L 1 6/83 <br /> POTASSIUM TOTAL RECO 2.300 1 . 117 4.600 1 .400 MG/L 8 3/81-12/82 <br /> ANIONS <br /> BICARBONATE AS HCO3 372.300 45.474 488.000 293.000 MG/L 12 3/81- 6/89 <br /> CHLORIDE 22.083 59.617 21l .000 2.000 MG/L 12 3/81- 6/89 <br /> SULFATE 214.916 590.620 2090.000 15.000 MG/L 12 3/81- 6/89 <br /> U = MICRO <br />