Laserfiche WebLink
7'he embankment was constructed [e be stable and provide adequate freeboard. Therefore, <br />tea sod on the design, [his structure complies with the appropriate regulations for a <br />sedimentation structure. A toe drain and hori rontal drainage system was Snstalletl to <br />collect any seepage and discha rye below the toe of the embankment. Seneca Coal Company <br />will pe iicdica'-ly inspect the structure for sediment storage, at ructural integrity, and <br />hazardous conditions. Maintenance and remedial work will be performed in accordance with <br />the approved mine permit. <br />-~struction Suruna cy <br />In accordance with Rule a, Part 4.05.6(101 of the Rules and Regulations of the Colorado <br />Mined l.a nd Feclamation Board pursuant to the Colorado Surface Coal Mining Feclamation Act <br />34-33-101 ei seq., I Michael G. Aliavilla, hereby certify that the construction of <br />Sedimentation Pond 011 was inspected and constructed under my supervision. The <br />cons[ru ction of Fond 011 was supervised on site by Chuck McCullo h, Senior Engineer- <br />Operations, at the Ycast Mire. Chuck assured all work was performed in accordance with <br />[he design and the specifications. I inspe cC ed [he structure daily q, verify the pond's <br />conditions during construction and upon completion for the as-built. Our yeotechnical <br />r,OnSUltanC, NorthwESL CO loradG CCnaul~ants, Inc. wd5 heCe daily LO dO~compd cilOn Cesiing, <br />soil analysis, etc. Mr. Hal Schlicht was also on the site a[ several critical occasions <br />during the co nsiru ction of Lhis pond, as well. Their summary reps rt for this pro?ect is <br />located in P.ddendum 13 -4 A-E. I, Michael G. Al [a villa, am a 19Fq graduate in mining <br />Er,q ineeri r,q and I hsde been a Registered P[cfessienal Enq ir,e er :n ^.eieradc since August <br />1~, 1992. <br />The purpose of my inspec rion and certification was to ensure picper construction cf <br />Sedimentation Fond 011 and to satisfy the req ui remenis cf Fu1e 4.OS.F(101 of [he Cclo[ado <br />Mined Land Feclamation Board. The material was placed in the embankment [o meet cr <br />exceed the design specifications Isee Addeneum 13-4A-E for compaction infcrmationl. This <br />as-tu;lt report ccnfirn~s th.e ccnsiru cticn cf this structure meets or exceeds the Rules <br />and Fegulacions of the Colorado Mined Land Reclama rion Board. The structure is stable, <br />evidencing no intlicalions of slope instablliry. <br />To the best ct my knowledge, based upon my professional expertise, and to the extent <br />possible, Fond 011 a[ the Yoast F1i ne was constructed in accordance with the prudent <br />state-of-r he-art methods for earthen embankment constlucti0 n. Further, the structure was <br />i3-4A-10 Revised 12/12/97 <br />