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MINING PLAN <br />non-existent on drainageway sideslopes or in lowland areas, except on steep south facing slopes <br />where it is possible as a result of high natural erosion rates and slow soil development rates. <br />Silt fencing or ditching along the down hill edge of the stockpile can be used to help control <br />sediment discharge. <br />REQUIREMENT: Protective seeding of overburden stockpiles will be done if the <br />overburden is considered suitable for supporting such vegetation. <br />Discussion: Most overburden is far too infertile to support any growth other than a <br />minor amount of weedy annual species. Therefore, primarily grading will be used to reduce the <br />steepness of sideslopes. <br />Extraction: <br />Once the soi] and overburden has been removed, extraction of the sand can occur. <br />During the extraction of the sand, the only restrictions are: <br />Drainage outlets from the mining area that would directly lead to a nearby natural <br />drainageway will not be created without suitable protection to capture sediment. <br />2. Appropriate protection for excessive sediment discharge can include the use of hay <br />bales, silt fences, or other suitable measures. A series of small sediment basins can also <br />be used, provided they are large enough to contain the discharge. In most cases such <br />outlets will be avoided or a silt filter approach will be used. Sediment basins often <br />create more disturbance which needs to be reclaimed and almost invariably the basins <br />turn out to be too small to be effective in major storm events. <br />The depth of mining will be as deep as necessary to remove the sand resource. <br />Coal Creek Sand Resource Amendment 3 (2005) - M-1988-044 Exhibit D Page 28 <br />