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<br />1, MICHAEL W. LUDLOW, A REGISTERED PROFESSIONAL ENGINEER IN THE STATE OF <br />COLORADO, DO HEREBY PROVIDE THE FOLLOWING CERTIFICATION IN ACCORDANCE <br />WITH COLORADO MINED LAND RECLAMATION BOARD RULE 4.05.6 (10). <br />THIS CERTIFICATION STATEMENT PERTAINS TO SEDIMENT POND C, ORIGINALLY <br />PERMITTED AND CONSTRUCTED UNDER PERMIT NO. C-S1-071 AND RECENTLY <br />INCORPORATED INTO EXHIBIT 8G OF PERMIT NO. C-82-056. SEDIMENT POND C LIES <br />IMMEDIATELY NORTH OF THE TIPPLE #2 COAL STOCKPILE INTHE SW%. NE%. OF SECTION <br />31, TOWNSHIP 5 NORTH, RANGE 86 WEST. <br />IN PREPARING THIS CERTIFICATION, AN AS-BUILT SURVEY WAS GENERATED AND <br />COMPARED WITH THE DESIGN CRITERIA SPECIFIED IN PERMIT NO. C-81-071, EXHIBIT 13. <br />A FIELD INSPECTION WAS CONDUCTED ON NOVEMBER S, 1996 TO VERIFY THE <br />ACCURACY OF THE AS-BUILT DRAWING PROVIDED. THE DESIGN SPECIFICATIONS FOR <br />POND VOLUME, SEDIMENT STORAGE VOLUME, FLOOD STORAGE VOLUME, PRINCIPAL <br />SPILLWAY DESIGN HYDRAULICS, AND EMERGENCY SPILLWAY DESIGN HYDRAULICS <br />WERE EVALUATED AND THE AS-BUILT POND CONFIGURATION WAS FOUND TO MEET <br />OR EXCEED THE PREVIOUSLY REFERENCED DESIGN SPECIFICATIONS BASED UPON MY <br />INQUIRY OF THE PERSON RESPONSIBLE FOR COMPLETING THE EVALUATION. <br /> <br />// / Z /~L <br />DATE <br /> <br />