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<br />-8- <br />2. P8d4 must submit to the Division a revised monitoring map showing the <br />correct location of all wells. Well installation data must be submitted for <br />TR1.5 and the TR4. P8d~9 should discuss the water quality of TR1.5 and offer an <br />explanation as to why this well's quality is improved relative to TR1 and TR2. <br />3. Site TR-b, used to measure flow data, should be examined by PBd~'I <br />personnel and a determination made as to whether or not the channel in this <br />area of Trout Creek is stabilizing. If the channel in this area does not <br />appear to be stabilizing, P&M should relocate this site to a more stable <br />portion of Trout Creek. <br />4. On May 15, 1984, the reclaimed area known as the South of Shop Area <br />slid. At this point the reason why is not clearly understood, but it is <br />believed that water played an important part in this slide. P&M should be <br />monitoring other areas to determine if there is an potential for sliding in <br />these areas. <br />a. P&M should begin conducting an annual spring and seep survey of <br />their property to determine any new areas of saturation as well as <br />monitoring changes in existing seeps. This survey is best accomplished <br />in early spring just after the majority of snow is melted from the <br />permit area. This should be instituted in 1984 even though it will be <br />later than the specified time. Recorded data should include location, <br />estimated amount of flow, estimated amount of sediment in flow, i.e., <br />clear, muddy, and where flow is coming from. <br />b. As part of their permit application P&M committed to installing a <br />spoils monitoring well in year 4 of mining (1984). Because of the <br />recent events additional wells may be necessary. P&M should devise a <br />monitoring plan for the spoils water to be implemented this summer. <br />This plan should be submitted to the Division for approval.l}y <br />X984. <br />5. P&M monitors no bedrock wells to determine dewatering effects due to <br />mining. P&M should discuss whether or not bedrock wells drilled as part of <br />the baseline study are still intact and, if so, why they have discontinued <br />monitoring these wells to determine dewatering effects. From the baseline <br />study it is evident that the downdip wells are located in a confined aquifer <br />and mining may have some effect on this system. In areas downdip from mining <br />bedrock wells should be monitored quarterly for water levels and semi-annually <br />for chemical parameters. <br />6. P&M should reinstall the flume in the drainage between Center Ridge and <br />West Ridge. <br />7. The annual hydrology reports submitted by P&M are inadequate to allow <br />for review and evaluation by the Division. The reports make statements as to <br />the effect of mining on the hydrologic balance but contain no data to <br />quantitatively substantiate these statements. <br />