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1 <br />occurring in the downstream station on Middle Creek (Site 29). The spring <br />' runoff cond~.ictivity at Site 29 I~as increased from 400 mmhos/cm to 1200 <br />rtnnhos/cm. Also the irrigation season level has increased from approximately <br />' 1500 mmhos/cm to approximately 2500 mmhos/cm: This increase is probably <br />more due to upstream mining activities than to the effects of hlirre No. 3. <br />' Other than increased levels of sodi~nn, sulphate, and SAR in the stream no <br />other significant water quality impacts due to mining have been detected. <br />' The increase in SAR levels during irriyation season is. not sufficient to <br />cause material damage. <br />1 <br />1 <br />1 <br /> <br />LJ <br />LI <br /> <br /> <br /> <br /> <br />1 <br />1 <br /> <br />' -6- <br />