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<br />Mined Isnd Reclamation Division letter, July 13, 1984
<br />The basis for this section of this certification is Mined Land Reclamation Division letter, July 13, 1984, RE:
<br />Professional Certification.
<br />' Ll). A statement of the professional qualifications of the certifvine 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 [earthwork (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 darns for safety, stability, and
<br />' operational effectiveness. He is a registered Professional Engineer in the States of Colorado and Missouri.
<br />A citation of the Rule reauirine the certification.
<br />' The requirement for this certification is Rule Number 4, Section 4.05.9 (10) and (11) of the Regulations of
<br />the Colorado Mined Land Reclamation Board for Coal Mining.
<br />' f~ A specific description of the subject of the certification.
<br />The subject of this certification is sedimentation Pond Number 003 in Permit Number C-81-012, and concerns
<br />' items (a) through (e) presented above. it is an earth embankment structure. Appurtenant structural elemenu
<br />include a riprap-lined earth emergency spillway and a primary spillway [corrugated metal pipe (CMP) trickle
<br />tube provided with a metal baffle plate]. The permit is [o 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 />' Criteria and information for this certification is found in the Permit (Section 2.05.3, Ponds. Impoundments
<br />and Diversions, page 2.05-2, and Exhibit 7 (including Exhibit 7 Midterm Review, Sedimentation Pond As-Built,
<br />' 5-30-91, Rev. 1), other information found in Exhibit 7 of the Permit, and the 1996 quarterly inspection reports.
<br />This certification does not extend to verification that the information in the Sedimentation Pond As-Built, and
<br />other information found in Exhibit 7, represents existing conditions in [he field, nor that the structure was
<br />' designed, built, or operated in compliance with Rules 4.05.2 through 4.05.9 of Colorado Mined Land
<br />Reclamation Division.
<br />A statement of the actions taken In preparinE the certification.
<br />' The following were reviewed: Rule Number 4, Section 4.05.9 (10) and (11) of the Regulations of the Colorado
<br />Mined Land Reclamation Board for Coal Mining; Mined Land Reclama[ion Division letter July 13, 1984; the
<br />' 1995 annual certification ;the 1996 quarterly inspection reports; permit documents[ion [including the
<br />Sedimentation Pond As-Built, Kaiser Steel, Chimney Rock, Pond No. 003, 5-30-91, Rev. 1; Map 8, Drainage
<br />Control, Revised 320/95; Division of Minerals and Geology (DMG) letter, October 24, 1995, Re: Chimney
<br />Rock Mine (Permit No. C-81-023) Midterm Review; the Dam Safety Manual (State Engineer's Office, June
<br />' 3, 1983), and 2 CCR 402.1, Rules and Regulations for Dam Safety and Dam Construction. Mr. Walker made
<br />a site visit and inspection on 29 October 1996. Mr. Hockett, of Elk River Construction Company, is
<br />' Chimney Rock Mine Pond #003 Certification, 3 December 1996, Page 2 of 3 Pages
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