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Page 4-ix lists the acreage necessary for the permanent water treatment system and the <br />post mining land use of developed water resources. <br />The treatment pond areas including the long pond, sediment pond P-9 and the access road <br />are permanent features to support the developed water resources postmining land use. <br />The No. 1 Mine portal area was regraded and vegetated during late1998. The grading <br />work was performed in accordance with the contours presented on drawing D-4-15, Final <br />Reclamation West End of Mine Site and drawing D-2-5, No. 1 Mine Seepage Control and <br />Treatment Pond Plan. <br />Material needed to grade the portal area to approximate original contour was obtained from <br />the fill pile shown on drawing D-2-5. This is the same material which was removed from <br />the No. 1 Mine portal area when the mine seepage was first discovered in 1988. The <br />topsoil stockpile located near the portals was utilized in the reclamation project. <br />In order to maintain the water treatment system, a 36-inch culvert was buried to provide <br />access to the flooded air shaft. The location of the culvert is shown on drawing D-2-5. The <br />culvert will be utilized to maintain the 6-inch diameter pipe which conveys the water from <br />the flooded air shaft to the long pond. If the 6-inch diameter pipe malfunctions for any <br />reason, a replacement pipe can be installed in the invert of the culvert. To prevent <br />unauthorized entrance into the culvert, a locked gate or cover was placed over the open <br />end of the culvert leading to the vent shaft. <br />u <br />• <br />4-73 5/01 <br />