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ATTACHMENT 8 <br /> Process Flow Description <br /> [See Process Flow Diagram - Attachment A) <br /> Note: Numbers Correspond to Description <br /> Present System <br /> 1. "White pipe" conveys flow from underground workings to the <br /> surface through the rock tunnel . <br /> 2. Mine water is flocculated on leaving the tunnel. <br /> 3. Mine water flows to the three-pond series of Outfall 016 for <br /> settling prior to discharge to Dutch Creek. <br /> Underground Sizing Screen <br /> 4. Underground grit screen removes coarse solids. <br /> Water Treatment Plant <br /> 5. Mine water is routed (at valve box) through pipeline to <br /> recycle sump/hydrocyclone of mine water treatment plant*. <br /> 6. Underflow from recycle sump/hydroclone, containing middling <br /> solids, goes into the coal preparation plant cycle. <br /> (Alternative: underflow goes to 001 ponds. ) <br /> Note: Calculations re. 001 ponds. Attachment E. <br /> 7. Overflow from the recycle sump/hydroclone, containing very <br /> fine (-200 mesh) solids proceeds to flocculation, then to <br /> "finishing" (i.e. settling of fine solids) in sediment pond at <br /> outfall 020 (Alternative: 001 pond(s) used for "finishing") <br /> Notes CalculationsCalculations re. pond.ponds. Attachment E. <br />