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<br />' (e) Any other aspect of the dam or embankment aRectine stability. <br />' None. <br />Mined Land Reclamation Division letter, July 13, 1984 <br />' The basis for this section oC this certification is Mined Land Reclamation Division fetter, July 13, 1984, RE: <br />Professional Certification. <br />t )'~ A statement of the professional qualifications of the certifvinQ professional. <br />Mr. Walker was graduated from the Colorado School of Mines with a Professional Degree in Geological <br />' Engineering in 1959, and from the Missouri School of Mines at Rolla with a Bachelor of Science Degree <br />Equivalent in Civil Engineering in 1964 and a Master of Science Degree in Civil Engineering (major in Soils <br />Engineering) in 1966. His pertinent experience includes construction of drainages structures, impoundments <br />' for dredge spoils, and erosion control and wildlife water dams and ponds; teaching (eanhwork (including <br />hydrology and drainage) design, methods of construction, construction management, and quality control <br />(including soil material testing)]; review and management of design and construction of dredge spoil <br />' containment structures (impoundments); and inspection of sedimentation dams for safety, stability, and <br />operational ef[ectiveness. He is a registered Professional Engineer in the States of Colorado and Missouri. <br />A citation of the Rule requiring the certification. <br />The requirement for this certification is Rale 4.05.9 (10) and (11) of the Regulations of the Colorado Mined <br />Land Reclamation Board Cor Coal Mining. <br />' Ll A specific description of the subiect of the certification. <br />' The subject of this certification is a sedimentation Pond Number 004 in Permit Number C-81-023, and <br />concerns items (a) through (e) presented above. South and west earth embankments on a hillside form the <br />pond. Appurtenant structural elements include a riprap-lined earth emergency spillway and a corrugated metal <br />pipe riser (with weep holes) and barrel. The permit is to conduct a mining operation known as the Chimney <br />' Rock Mine for the purpose of extracting coal, and was issued to Kaiser Steel Resources (now Kaiser Ventures, <br />Inc.). The Chimney Rock Mine (including the subject pond) is located in Archuleta County, State of <br />Colorado, in Township 34 North, Range 4 West, New Mexico Prime Meridian, approximately 22 miles <br />' southwest of Pagosa Springs, Colorado. <br />This certification is limited to the scope of Rule 2.05.9 (10) and (11) as regards the existing sedimentation <br />' pond, and is based on information found in the Permit (Section 2.05.3, Ponds, Impoundments and Diversions, <br />page 2.05-2, and Exhibit 7, including the Sedimentation Pond As-Built, 7-7-91, Rev. 1 and the Midterm <br />Review). This etrtifitation does not extend to verification that the Sedimentation Pond As-Built, 7-7-91, Rev. <br />1 and other information found in Exhibit 7 represents existing conditions in the field, nor that the structure <br />' was designed and/or built in compliance with Rules (Sec ions) 4.05.2 through 4.05.9, nor that the pond is <br />operated in compliance with applicable rules or regulations of the Colorado Mined Land Reclamation <br />Division. <br />' j~ A statement of the actions taken in preporine the certification. <br />The following were reviewed: Rules 4.05.9 (10) and (11) of the Regulations of the Colorado Mined Land <br />Reclamation Board for Coal Mining; Mined Land Reclamation Division letter July 13, 1984; the 1995 annual <br />certification; the 1996 quarterly inspections; permit documentation; the Dam Safety Manual (State Engineer's <br />' Chimney Rock Mine Pond #004 Certification. 3 December 1996, Page 2 of 3 Pages <br />1 <br />