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2.05.3(6)(b) <br />yards of overburden removed from this site. .*:'xcavation will begin <br />• upon the approval from the Mined Land Reclamation Board. <br />Approximately 1950 cubic yards of overburden from the p*oposed <br />sedimentation pond site will be used in construction of the proposed <br />sedimentation pond and dam. The surplus (approximately 4550 cubic <br />yards) of overburden will be transported to the proposed underground <br />development waste disposal site and stockpiled. Refer to the Proposed <br />Surface Disturbance Diap, 2.05.3(2)(b)-1, for the location of the <br />stockpiles. Cross sections of the proposed sedimentation pond site <br />can be found in Drawings 2.05.3(9)(b)-1 and 2.05.3(9)(b)-2. <br />When the proposed sedimentation pond is complete, work on the <br />proposed portal and yard area for access to the Red Canyon #2 l7ine <br />will begin. Grand Mesa Coal Company plans to start excavation in the <br />fall of 1981. There will be approximately 35,000 cubic yards of <br />overburden in this site. <br />• Overburden from the Portal site will be used in the construction <br />of a bench south of the proposed Red Canyon #2 Mine portals. Refer <br />to Section 2.05.3(2)(b) for details on the portals and bench construction. <br />Cross sections of the proposed portals and bench can be found in the <br />Proposed Surface Disturbance Map, 2.05.3(2)(b)-1, and Drawings <br />2.05.3(2)(b)-1, and 2.05.3(2)(b)-2. <br />(c) The results of a geotechnical investigation. <br />A geotechnical investigation was conducted in the proposed portal <br />and yard access to the Red Canyon # 2 Atine during the fall of 1979 by <br />Fox Consulting Engineers and Geologists. A cac~~lete copy of this investigation is <br />included as a separately bound supplement to this permit application. PEfet to 7olume <br />3 0` 5. The investigation was conducted when Grand Mesa Coal Cor~any constucted the <br />present sedimentation pond. The purpose of the investigation was to <br />determine the subsoil conditions in the are,. . <br />. mhe investigation consisted of eight test holes and three test pits, <br />Location of the test holes and pits are indicated on Figure 2.05.3(6)(c)-1. <br />REVISED May 8, 1981 112 <br />