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<br />• <br />I, STEPHEN L. MILLER, 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 E, ORIGINALLY <br />PERMITTED AND CONSTRUCTED UNDER PERMIT NO. 76-16 AND INCORPORATED INTO <br />EXI-SIT 8 OF FISH CREEK TIPPLE PERMIT NO. C-82-056 IN 1985. SEDIMENT POND E LIES <br />NORTH OF THE FISH CREEK TIPPLE INSTALLATION IN THE NW'/, AND NE%. OF THE SE%. <br />OF SECTION 2, 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 FISH CREEK TIPPLE PERMIT NO. <br />C-82-056, EXI-IIBIT 8, SEDIMENTATION POND DESIGN, CERTIFIED AUGUST 8, 1985 BY <br />ELDON D. STRID, A REGISTERED PROFESSIONAL ENGINEER IN THE STATE OF <br />COLORADO. <br />A FIELD INSPECTION WAS CONDUCTED ON NOVEMBER 27, 1996 TO VERIFI' l'HE <br />ACCURACY OF THE CURRENT AS-BUILT DRAWING PROVIDED BY EPP AND ASSUC'LA"I'ES <br />THE SURVEY INDICATED THAT THE ELEVATION OF THE EMERGENCY SPILLWAI' WAS U a <br />FEET LOWER THAN THE TOP OF THE RISER. THIS ELEVATION DIFFERENCE MAY BE DUE <br />TO SOME SETTLING OF THE EMBANKMENT, ICE HEAVE ON THE RISER PIPE, UR A <br />COMBINATION OF THE TWO FACTORS. <br />MAINTENANCE WORK HAS BEEN CARRIED OUT TO CORRECT THE OUTLET ELEVATIONS <br />TO MEET THE DESIGN SPECIFICATIONS. THE DECANT STRUCTURE WAS REALIGNED, <br />ESTABLISHING THE TOP OF THE STRUCTURE AT ELEVATION 6756 (EPP 1996 DRAWING). <br />THE CREST OF THE EMERGENCY SPILLWAY WAS ALSO BUILT UP TO ELEVATION 6756.5 <br />(EPP 1996 DRAWING). WITH THESE MODIFICATIONS, THE CONFIGURATION OF THE <br />PRIMARY SPILLWAY STRUCTURE CONFORMS TO THE DESIGN SPECIFICATIONS WITH <br />ADEQUATE SEDIMENT STORAGE PROVIDED BELOW THE LOWEST RISER HOLE. THIS <br />INFORMATION IS BASED UPON MY INQUIRY OF THE PERSON RESPONSIBLE FOR <br />COMPLETING THIS EVALUATION. <br />STEPHEiQ L. N <br />. P.E. NO. 33573 <br />OQppO REt;~sT <br />~.•jNEN.E•M~ F~ <br />-~6C~(C~,~O <br />A• <br />,~ : 33573 <br />9~T .~~¢- <br />~S'S~pNAL FNG\~ <br />DATE <br />J -l3-00 <br />