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June Monthly/2nd Quarter 1999 Report <br /> Page 3 <br /> • Mayflower Facility—Upland Hydrological Control <br /> Extension of the lined ditch on Tailings Pond No. 1 was started by month end. It is being <br /> extended and upgraded to carry flows that are anticipated to be intercepted in drainage A <br /> and B. <br /> Pictures of the ditch, drainage A flow and completed drainage C project are included with <br /> this report. <br /> • Tailings Pond No. 4 Surface Drainage Modification <br /> The outlet culvert under Colorado Highway 110 was installed during the month. Pictures <br /> of this installation are included in this report. <br /> • Tailings Pond No. 4 Upland Groundwater Diversion <br /> Discussions are ongoing with BLM to implement this project in exchange for an area to <br /> place material from their Lackawanna project. <br /> Cement Creek Diversion and Water Treatment <br /> Following notice, Cement Creek diversion and water treatment was suspended on June 1, <br /> 1999. Sunnyside will evaluate whether resumption of Cement Creek diversion and <br /> treatment will occur in September. <br /> The June 1999 monitoring results for; dissolved metals in the AT-004 discharge; Cement <br /> Creek (CC-1); American Tunnel flow before treatment (AT-INFEL); and Cement Creek <br /> below the AT-004 discharge point (CC-20) are attached to this report. Since Sunnyside <br /> is not diverting and treating Cement Creek, the reported values (CC-1) are quality and <br /> flows for Cement Creek near the diversion. <br /> Mainstem Stream Monitoring and Reference Point Stream Monitoring <br /> The results from June's mainstem stream samples and reference point monitoring were <br /> reported with the May report. July's sample results have not been received. <br />