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<br />' The return water system consists of two sepazate components. These are the wtlection pond pump <br />back system and the sputter embankment pump back system. The collection pond pump back <br />' system picks up water from the seepage collection pond sump via two submersible pumps and <br />transfers the water to the pump station which in turn boast the water to the upper or lower <br />impoundment surface water ponds. The second system picks up decanted impoundment surface <br />' water from the sputter embatt{rntent wells and transfers the water to the mill for rerycling <br />' The tailings delivery pipeline was designed and constructed to transport the tailings slurry to the <br />impoundment area. The tailings pipeline exits the mill via the tailing delivery ditch. At the junction <br />of the tailing delivery ditch and the upper tailings impoundment the pipeline "Y's" and runs in both <br />' directions around the impoundment. During the initial deposition the tailings slurry will be routed <br />toward the main embart]Qttent and point discharged in the lower impoundment. Deposition points <br />' are located on 100-ft intervals around the impoundment perimeter with the exception of the main <br />embankment deposition points which are located on 50-ft intervals. <br />1.1 Contractors <br />1 Five contractors and two engineering groups were utilized to construct the tailings disposal facilities. <br />The five contractors were Twin Mountain Rock Company (TMR), Goodie Construction <br />Corporation, Seaot Corporation, Gagle Company inc., and CoNEL Inc. Steffen Robertson and <br />' I{irsten (U.S.), Inc. (SRK) performed QA testing and observation for the construction of the <br />facilities. Russell Engineering performed survey for the project facilities construction. <br />' Tdrin Mountain Rock Compatty was contracted to supply the heavy equipment, operators, and <br />supervision to construct the earthen structures and prepaze the impoundment foundation for the <br />' synthetic liner installation. Their scope called for excavating, placing, and compacting approximately <br />2.4 million CY of earth. <br />' Gundle Construction Corporation, Gagle Co., and Serrot Corporation, were contracted to supply <br />and/or install the synthetic liner products for the facilities. There contrails called for supplying, <br />' shipping and/or installing approximately 5.3 million SF of synthetic liner products. <br />' CoIYEL Inc. was contracted to install the collection pond pump station facilities and sputter <br />embankment decant channels. Their scope called for supplying and installing the pumps, electrical, <br />and the appurtenant facilities associated with the pump station and to fabricate and install the <br />t sputter embanluttent decant channels. <br />1 <br />1 <br />2 <br /> <br />