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"Topsoil Removal Boundary' illustrated on the Topsoil Handling map (Map No. 28), is <br />the planned area for topsoil to be removed in the next five (5) year term. <br />On the Bond Calculation Map Worst Case Topography (Map No. 35), we use the term <br />"Pit Disturbance Boundary" to delineate the maximum extents of the disturbance area <br />(See CDMG Definition). Other "Disturbance Boundaries" are also illustrated on this <br />map to delineate the maximum extents of the disturbance area (See CDMG Definitions) <br />for other components (i.e. Facilities). <br />The Bond Calculation Map Regraded Topography (Map No. 3~ has the very same <br />boundaries discussed on Map No. 35, Bond Calculation Map Worst Case Topography. <br />Therefore the Mining Limits falls within the Spoil Grading Boundary, and the Spoil <br />Grading Boundary falls within the Topsoil Removal Boundary,-and the Topsoil Removal <br />Boundary falls within the Pit Disturbance Boundary. <br />The bond calculations are calculated from the worst-case perspective; therefore the <br />"Disturbance Boundary" lines were used to calculate volumes for bonding. <br />In the case of the West Ramp of the West Pit, the ramp falls within the coal removal <br />area or our"Mining Limit' illustrated on the Mine Plan Map (Map No. 23). In addition <br />the ramp area that falls outside the mining limit is illustrated as disturbed on both the <br />Spoil Grading map and the Topsoil Handling map. Therefore the ramp area is covered <br />by the existing permit information. <br />I hope this provides adequate clarification of the map boundariesand how the West Pit <br />ramp relates to those boundaries. If you have any questions or concerns regarding this <br />issue, please call at your convenience. <br />Sincerely, <br />C. Crellin Scott <br />Sr. Environmental Engineer <br />Cc: File CF 4.0 2003 Correspondence <br />Steve H. <br />Roy F. <br />, ~ _E . ~V_.: - 1 l ( .., ~ : i ~ .. -.4. „Yang ~ ,.as- ~~"GJ.C'~r r ~, , 6, . ~ ~ : ~, <br />