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• <br /> PaGE I <br /> TABLE 19 <br /> SUMMARY OF WATER QUALITY DATA <br /> SUMMARY OF WATER OUALITV DATA, N0. 5 MINE DISCHARGE <br />PARAMETER MEAN STD. DEV, MAX . MIN. UNITS. N0. PERIOD <br />PHYSICAL PROPERTIES <br />TEMPERATURE FIELD 14, 986 3 .736 23 .000 6 .000 DEGREES C 313 5/82-12/93 <br />CONDUCTIVITY FIELD 1390. 406 109 .092 1654 .000 1050 .000 UMHOS/CM 308 5/82-12/92 <br />CONDUCTIVITY LAB 1260 .000 I50 .37a 1560 .000 950 .000 UMHOS/CM i7 9/81- 8/B9 <br />PH FIELD 7, 670 0 .282 8 .600 7 ,000 PH 310 5/82-12/92 <br />PH LAB 8. 236 0 .315 8 .660 7 .300 PH 17 9/81- 5/90 <br />ALKALINITY TOTAL 666. 500 47 .079 788 .000 676 .000 MG/L I2 9/81- 5/90 <br />A[IDITV AS CAC03 <668. 000 0 .000 <66B .D00 0 .000 MG/L 3 12/85- 6/86 <br />HARDNESS TOTAL 137. 090 233 .502 837 .000 36. 000 MG/L 11 9/87-12/83 <br />SOL10$ DiS50LVED B7D. 080 75 .956 1178 .D00 675 .000 MG/L 75 9181-11/92 <br />SOLlOS SUSPENDED <8. 912 9. 086 70 .000 2. 000 MG/L 241 12/81-12/92 <br />SOLIDS SETTLEABLE <0. 200 0 .000 <0 .200 <0. 200 MLlL 1 5/90 <br />OILBGR EASE VI SI 2. 000 0. 000 2 .000 2. 000 309 1/87-12/92 <br />SAR 17. 422 4 .492 25 .393 12 .910 71 9/81-12/83 <br />CATIONS <br />CALCIUM TOTAL 9. 000 1. 414 10 .000 8. 000 MG/L 2 8/83- 9/83 <br />CALCIUM TOTAL RECD 15. 666 6. 20a 24 .000 7. 000 MG/L 9 9/81-12/83 <br />MAGNESIUM TOTAL 4. 500 0. 707 5 .000 4. 000 MG/L 2 B/83- 9/83 <br />MAGNESIUM TOTAL RECD 8. 666 2. 345 12 .000 x. 000 MG/L 9 9/81-12/83 <br />SODIUM TOTAL 327. 500 7. 778 333 .000 322. 000 MG/L 2 8/83- 9/83 <br />SODIUM TOTAL RECD 308. 444 21. 754 352 .000 272. 000 MG/L 9 9/81-12/83 <br />POTASSIUM TOTAL 5. 350 0. 494 5. 700 5. 000 MG/L 2 B/83- 9/83 <br />POTASSIUM TOTAL RECD 4. 866 0. 744 6 .400 3. 600 MGlL 9 9/Bf-12!83 <br />U = MICRO <br />