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<br />parameters which are relevant to the hydrologic monitoring program <br />and the plan for protection of the hydrologic balance. Chloride, as <br />well ae certain other parameters, are not listed because 1) they do <br />not occur in significant quantities in surface water or ground <br />water; 2) they do not show significant seasonal variations; or 3) <br />they do not ahoy significant variation due to mining from upgradient <br />to downgradient locations. As shown on figures 8 and 9, the <br />parameter Chloride (C1) constitutes lees than 4 percent of the / <br />anion; and therefore leas than 2 percent of the total dissolved <br />Or <br />solids in surface water and ground water. Chloride does not occur <br />in significant quantities in surface water or ground water, does not <br />show significant seasonal variation, and does not show significant <br />variation due to mining from upgradient to dawngradient locations at <br />Mine No. 3. The baseline data presented in the application is <br />justification for abbreviating the Revised Parameter List for the <br />hydrologic monitoring program. <br />4. Existing records show that surface water data collection at the Mine <br />No. 3 sites has not been adequate to detect effects of mining on stream <br />water quality or quantity. In order to evaluate contribution of runoff <br />from disturbed and reclaimed area, gains/losses of surface water to the <br />alluvial ground water system, total suspended and dissolved solids load, <br />and possible influence of spoils aquifers on the surface water system, <br />stream flow quantity and water quality must be monitored both upstream <br />and downstream from the mine site. Available records show that water <br />quality monitoring has not occurred on Foidel Creek upstream of the mine <br />site and stream flow monitoring has not been conducted on Middle Creek <br />-9- <br />