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<br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />7313 Sherman Si., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />Interoffice MEMORANDUM <br />to: Kent Gorham <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />RECLAMATION <br />MINING•SAFETY <br />Bill Owens <br />Governor <br />from: Byron G. Walker Greg E. walcner <br />subject: Request for Support, Lorencito Excess Spoil Fill Inspection Reports Executive Director <br />Michael B. Long <br />date: May 29, 2002 Division Dirednr <br />This review was accomplished in response to your memo of May 22, 2002, same subject. Reports <br />of Fourth Quarter 2001 Fill Area # 7, Fourth Quarter 2001 Fill Area # 9, Fill Area # 8 <br />Construction, January 25, 2002, Fill Area # 9 First Quarter 2002 February 23, 2002, Fill Area #8 <br />Srst Quarter 2002 March 30, 2002, Fill Area #7 Construction April 12, 2002. I also reviewed <br />your draft memo. <br />I think your draft letter is appropriate. <br />A review of the reports for compliance with (portions thereof) the rules and the Permit <br />Application Package (PAP) follows. <br />Disposal of Excess Spill Fourth Quarter 2001 Certification Fill Area #7 <br />Rule or Permit Re uirement Com Hance <br /> <br />Rule 4.09.1 1 I (a) The fill shall be ins ected for stabilit <br /> by a registered engineer or other qualified professional Perhaps) <br /> specialist experienced in construction of earth and rockfill <br /> embankments under the direction of a qualified <br /> rofessional en ineer <br /> At least uarterl throu hout the construction Perha s <br /> And durin the followin critical construction eriods: <br />4.09.1(4) (])removal of all organic material and topsoil [see also Yes <br /> Rule 4.09.1 4 <br /> 2 lacement of underdraina e s stems, ualified3 <br /> (3) installation of surface drainage systems, Not yet <br /> a licable <br /> (4) placement and compaction of fill materials, [see also Yes4 <br /> Rule 4.09.1(7), PAP Exhibit 13 page 17, and PAP Exhibit <br /> 13 page 3}. The excess spoil shall be placed in horizontal <br /> lifts.. Lifts are to be 6 to 8 feet thick, level, and compacted <br /> b dozer or trucks, within 50 feet of the slo e face. There <br />