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• <br />TABLE zl <br />CYPRUS YAMPA VALLEY COAL CORP <br />SUMMARY OF WATER QUALITY DATA <br />STATION NUMBER: 06AY1 --- 006-AY-1 <br /> Ave [age Std Maximum Minimum Units Count Pe [iod <br />PHYSICAL Pp OPERTIES <br />TEMPERATURE FIELD 10. 083 J.7 18 000 5. 000 DEGREES C 12 10/92 - 09/93 <br />CONDUCTIVSTY FIELD 699. 16"1 156.1 860 000 410. 000 UMHOS/CM 12 10/92 - 09/93 <br /> LAB 589 250 159.0 802 .000 493. 000 UMHOS/CM 4 12/92 - 09/93 <br />PH FIELD 8. 083 0.3 8 .600 "1. 300 PH 12 10/92 - 09/97 <br />ALKALINITY TOTAL 238. 500 98.1 306 .000 202. 000 MG/L 9 12/92 - 08/97 <br />HARDNESS TOTAL 289. ]50 68.0 380 .000 232. 000 MG/L 4 12/92 - 08/93 <br />SOLIDS DISSOLVED 3"]1. 000 151.5 599 .000 260. 000 MG/L 4 12/92 - 08/93 <br />CATIONS <br />CALCIUM DISSOLVED 56. 333 9.5 66 .000 50. 000 MG/L 3 12/92 - 06/93 <br />MAGNESIUM DISSOLVED 29. 000 4 9 39 .000 26. 000 MG/L 3 12/92 - 06/93 <br />SODIUM DISSOLVED 22. 333 2.5 25 .000 20. 000 MG/L 3 12/92 - 06/93 <br />AN1ON5 <br />BICARBONATE AS HCO3 296. 000 ]B.S 3"13 .000 222. 000 MG/L 3 OJ/93 - 08/97 <br />CARBONATE AS COJ 9. 000 6.9 12 .000 0. 000 MG/L 3 03/93 - 08/93 <br />SULFATE NOT APPLICABLE 109 500 ]2 .9 214. 000 51. 000 MC/L 4 12/92 - 09/93 <br />PRIMARY <br />CADMIUM DSSSO LVED -0 .025 0.2 0. 200 -0 .100 UG/L 4 12/92 - 08/93 <br />LEM DISSOLVED -20 .000 0.0 -20. 000 -20 .000 UG/L 9 12/92 - 08/93 <br />MERCURY DISSOLV EO -0 .050 0.2 0. 200 0 200 UG/L 4 12/92 - OB/93 <br />SELEN IlR1 DI55O L`JED 0 .500 1.0 1 000 1 000 UG/L 4 12/92 08/93 <br />Report Date: 10-SUN-99 Page: i of 2 <br />Repo[C Name: WQA020R <br />