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the tailing disposal area that precludes an unauthorized release because the tailing <br />disposal area is a zero discharge facility (see following discussion on the tailing disposal <br />facility). <br />6.8 Tailing Disposal Area <br />Source <br />The primary sources of possible contamination are tailing solution and the tailing <br />materials. All water that enters the tailing disposal area is considered process water <br />(PW), and is fully contained and subject to zero discharge. Water that drains to the <br />tailing disposal area, whether tailing solution, precipitation, or West Pit water is <br />maintained within the facility. Since all water that reaches the tailing disposal area is <br />classified PW, the tailings disposal area is not subject to the stormwater regulations. <br />Risk Assessment <br />As previously discussed, the tailing disposal facility has been designed and constructed as <br />azero-discharge facility for precipitation falling within the tailing disposal and the mill <br />facilities. The storage capacity of the tailing disposal azea has been reviewed and <br />approved by the DMG and is discussed in the documents associated with the DMG <br />permit and the various permit technical revisions. Since this area is not subject to <br />stormwater regulations, no further discussion is necessary. <br />6.9 Topsoil Stockpile Areas <br />Source <br />Topsoil stockpiles have been constructed throughout the mine azea in an effort to make <br />reclamation easier and to avoid unnecessazy moving of material. The stockpiles were <br />constructed by end-dumping the native material from mine haul trucks. The stockpiles <br />were contoured to approximately 3H:1 V and were vegetated if left for longer than one <br />year. Under these conditions runoff from the topsoil stockpiles will produce some <br />sediment that must be removed before release to the surface water system. <br />Ba[tle Mountain Resources, /nc. Telesto Solutions, /nc. <br />,~~ m;, ne~~.,~er ma.Qa~e~~om~.da 23 May 3. 1001 <br />