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1 <br /> NORTH THOMPSON CREEK <br /> tDOWNSTREAM WATER QUALITY DATA <br /> PRE-PERMIT <br /> ' 05/22/89 09/20/89 MEAN <br /> pH 8. 40 8. 50 7.61 <br /> Conductivity, umhos/cm 70 . 00 270. 00 494 . 00 <br /> ' Temp C 15 . 00 11 .00 12. 25 <br /> TDS 165 .00 280 .00 217 .60 <br /> TSS 42 . 00 2165 .00 41 . 13 <br /> ' Bicarbonate 97 . 43 67 . 70 138 . 52 <br /> Calcium 30. 24 81 . 40 40. 58 <br /> Chloride 6 . 03 8.64 6 . 24 <br /> ' Copper 0. 017 0.017 0. 01 <br /> Iron 1 . 17 3. 74 0 .01 <br /> Magnesium 9. 40 11 .04 10. 59 <br /> Manganese 0 .040 0. 330 0. 00 <br /> 1 Sodium 11 .86 29. 02 13 . 26 <br /> Sulfate 20. 70 62.60 40 .86 <br /> Zinc 0. 07 0. 19 0 . 01 <br /> L, <br /> - Conductivity calculated by adding 2% to the field measurement for <br /> each degree below 25 if appropriate. <br /> ' - All parameters below Temp are expressed in mg/l . <br /> - Pre-Permit mean data is located in Appendix 3-Q Volume II of <br /> ' Snowmass ' permit application. <br /> AHRl-89 <br /> 1 <br /> 1 <br /> 1 <br />