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Colowyo Coal Mine (Permit No. C-1981-019) <br />Technical Revision No. 72 <br />Stipulation No. Description <br />12. NO LATER THAN 1 SEPTEMBER 2009 THE OPERATOR WILL <br />SUBMIT A COMPLETE TECHNICAL REVISION APPLICATION <br />PROVIDING A DETAILED PLAN FOR VARIABLE THICKNESS <br />TOPSOIL REPLACEMENT FOR THE WEST PIT AND SOUTH <br />TAYLOR PIT. THE PLAN SHOULD INCLUDE A NARRATIVE AND <br />MAPPING THAT DELINEATES TOPSOIL REPLACEMENT ZONES <br />OF SPECIFIED THICKNESS RANGE AND MINIMUM AVERAGE <br />THICKNESS. THE PLAN WILL CONTAIN DETAILS AND <br />COMMITMENTS ADEQUATE TO DEMONSTRATE COMPLIANCE <br />WITH RULE 4.06.4(2)(A) AND ADEQUATE TO ENSURE THAT <br />ECOLOGICALLY SIGNIFICANT VARIATION IN SOIL THICKNESS <br />WILL BE ACHIEVED (INCLUDING A COMMITMENT TO <br />APPROPRIATE ANNUAL MONITORING AND REPORTING). THE <br />MAPPING AND NARRATIVE WILL CLARIFY THE APPROXIMATE <br />EXTENT AND GENERAL LOCATION OF ENHANCEMENT <br />PROCEDURES MENTIONED IN THE TECHNICAL REVISION 72 <br />NARRATIVE, INCLUDING SOIL BERMS, EXTENSIVE SOIL <br />ROUGHENING AND SNOW FENCE INSTALLATION. <br />RECLAMATION OPERATIONS, INCLUDING TOPSOILING AND <br />REVEGETATION, WILL PROCEED IN 2009, WHETHER OR NOT A <br />VARIABLE TOPSOIL REPLACEMENT PLAN IS APPROVED. <br />UNLESS AND UNTIL A VARIABLE THICKNESS TOPSOIL <br />REPLACEMENT PLAN IS APPROVED BY THE DIVISION, TOPSOIL <br />REPLACEMENT WILL ACHIEVE AN APPROXIMATE UNIFORM <br />THICKNESS OF 8 INCHES THROUGHOUT THE POST-2008 <br />PORTIONS OF THE ORIGINAL PERMIT AREA, AND 19.5 INCHES <br />THROUGHOUT THE SOUTH TAYLOR RECLAMATION AREA, AS <br />CURRENTLY APPROVED. <br />13. NO LATER THAN 4 JANUARY 2010 THE OPERATOR WILL <br />SUBMIT A COMPLETE TECHNICAL REVISION APPLICATION <br />ADDRESSING ESTABLISHMENT OF TALL SHRUB AND ASPEN <br />PLANTING AREAS IN APPROPRIATE SITE LOCATIONS OF THE <br />POST-2008 ORIGINAL PERMIT AREA AND THE SOUTH TAYLOR <br />RECLAMATION AREA. THE REVISION APPLICATION SHOULD <br />ADDRESS THE FOLLOWING: -MINIMUM SIZE OF INDIVIDUAL <br />PLANTING AREA (NOT LESS THAN 1 ACRE); -MINIMUM <br />CUMULATIVE PLANTING AREA ACREAGE (NOT LESS THAN 20 <br />ACRES FOR ASPEN/TALL SHRUB PLANTING SITES ON THICK <br />SOILS, AND NOT LESS THAN 20 ACRES FOR TALL <br />SHRUB/BITTERBRUSH PLANTING SITES ON THIN SOIL). BOTH