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page 4 <br />Memo to Susan Mowry <br />Animas Mine Waste Pile T.R. <br />ANALYSIS, FOR REVIEW BY THE DIVISION, NO LATER THAN 90 YS FOLLOWING <br />APPROVAL OF THIS TECHNICAL REVISION APPLICATION. THE COMPANY SHALL <br />RESTRICT PLACEMENT OF COAL PROCESSING WASTE TO THE TWO LOWER-MOST 50 FOOT <br />THICK TERRACE BENCHES OF THE PROPOSED AMENDED WASTE PILE, UNTIL THE <br />DIVISION HAS APPROVED THE STABILITY ANALYSIS AND CORRESPONDING DESIGN. <br />IN THE EVENT THAT THE STABILITY ANALYSIS DETERMINES THAT THE SLOPES OF <br />THE PROPOSED AMENDED COAL PROCESSING WASTE PILE WILL NOT ATTAIN THE <br />REQUIRED MINIMUM STATIC SLOPE SAFETY FACTOR OF I. S, SUNDANCE COAL COMPANY <br />SHALL REDESIGN AND RECONSTRUCT THE THEN EXISTING EMBANKMENT TO CONFORM <br />WITH A DESIGN SUBSEQUENTLY APPROVED BY THE DIVISION. IN SUCH AN EVENT, <br />IF AN ACCEPTABLE REDESIGN HAS NOT BEEN APPROVED BY THE DIVISION WITHIN 90 <br />DAYS FOLLOWING THE SUBMISSION OF THE ORIGINALLY REQUIRED STABILITY <br />ANALYSIS, SUNDANCE COAL COMPANY WOULD BE ORDERED TO CEASE DEPOSITION OF <br />COAL PROCESSING WASTE. <br />Stipulation 4~2: <br />THE DIVISION DIRECTS SUNDANCE COAL COMPANY TO COMPLETE "... A <br />SURVEY DESCRIBING THE POTENTIAL EFFECT ON THE STRUCTURE (AMENDED COAL <br />PROCESSING WASTE PILE) FROM SUBSIDENCE OF THE SUBSURFACE STRATA RESULTING , <br />FROM PAST UNDERGROUND MINING ACTIVITIES...", AS REQUIRED BY RULE <br />,2.05.3(8)(a)(i)(D). SUNDANCE COAL COMPANY SHALL SUBMIT THAT SURVEY, FOR <br />REVIEW BY THE DIVISION, NO LATER THAN ONE YEAR FOLLOWING APPROVAL OF THIS <br />TECHNICAL REVISION APPLICATION. THE COMPANY SHALL RESTRICT PLACEMENT OF <br />COAL PROCESSING WASTE TO THAT AREA DELINEATED ON THE MAP SUBMITTED AS A <br />SUPPLEMENTAL AMENDMENT TO THE TECHNICAL REVISION APPLICATION, UNTIL THE <br />DIVISION HAS APPROVED THE SUBSIDENCE SURVEY. IN THE EVENT THAT THE <br />REQUIRED SUBSIDENCE SURVEY WHERE TO DETERMINE THAT THE PROPOSED AMENDED <br />COAL PROCESSING WASTE PILE MIGHT BE POTENTIALLY DAMAGED BY ANTICIPATED <br />SURFACE SUBSIDENCE, SUNDANCE COAL COMPANY SHALL REDESIGN THE PROPOSED <br />AMENDED F~MBANKMENT TO RENDER THE DESIGN ACCEPTABLE TO THE DIVISION. <br />cc: Brian Munson <br />JP~JP <br />Doc. No: 5772E <br />