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1 <br /> <br /> Annual Certification <br />' 'camagarw„.xa~c:cn.::'s:mxra:s:a.:u'sv.'c ...s::c:cr:^:sa-cesa:-.-sxnn,~.n's:a;x:.arxs..'sr.::::¢.~;.':x.ccsm.:.:ssew;axrn.:xxn'xx::¢ <br /> Operator. Kaiser Ventures, Inc. <br />' Facility: Chimney Rock Mine, C-81-023. <br /> Pond Identification: Sediment Trap. <br />' <br /> Type o[ Pond: Sedimentation. Earth embankments <br />' Rules 4.05.9 (10) and (11) <br />The requirement for this section of this certification is Rule 4.05.9 (10) and (11) of the Regulations of the <br />' Colorado Mined Land Reclamation Board for Coal Mining. References within this certification quote Rule <br />Number 4 unless otherwise noted. <br />' (a) Existing and required monitoring procedures and instrumentation. <br />Inspections of the trap (pond) are required quarterly [Rule 4.05.6(13)J. Quarterly inspections were made on <br />32896, 627/96, 9/27/'996, and 29 October 1996. <br />' No stake (instrumentation to monitor sediment volume, Permit, Para 2.05.3, page 2.05-2, Rev. 3-1-94) was <br />observed in the [rap. <br />' (b) The design depth and elevation of anv impounded waters at the time of the initial certification report or <br />the average and maximum depths and elevations of anv impounded waters over the oast vear for the annual <br />certification reports. <br />' There is no indication of any standing water in the trap (quarterly inspection reports) over the past year. The <br />average depth is zero. The elevation of the bottom of the pond is 6406'. <br />' (cl Existing storage capacity of the dam or embankment. <br />' The existing (29 October 1996) storage capacity of the dam is estimated to be approximately 1.5 acre feet <br />[from the sediment level (bottom of the pond, 4th Quarterly Inspection Report) to within one 1.0 foot of the <br />crest of the embankment (Sediment Trap A Design Criteria, Exhibit 7)]. <br />' (d) Anv fires occurring in the construction materiel up to the date of the initial certification or over the past <br />vear for the annual certification reports. <br />' No fires were reponed up to the date of the initial certification, and no indication of fires in the construction <br />materials of the dam was observed during the past year. <br />' (el Anv other aspect of the dam or embankment affecting stability. <br />None. <br />Chimney Rock Mine Sediment Trap A Certification, 3 December 1996 <br />Page 1 of 3 Pages <br />