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III IIIIIIIIIIIIIIII <br />999 ~ SATE OF COLORADO <br />MINED LAND RECLAMATION DIVISION of ~o~ <br />Department of Natural Resources ~~.; • q9 <br />1313 Sherman St., Room 215 ~ ~ ~QQQ ~~°o <br />N '%'QQ <br />Denver, CO 60203 •`r'~ <br />303 666-3567 ~ re is <br />RA x: 303 832-8106 <br />Roy Romer, <br />Gwernar <br />January 15, 1991 Div soon Di eclor <br />Mr, Brent C. Anderson <br />Parcel, Mauro, Hultin & Spaanstra P,C. <br />Suite 3600 <br />1801 California Street <br />Denver, Colorado 80202 <br />RE: Grassy Gap Mine, File C-81-039 - Pit 4 Ha u7 Road Stability Report <br />Dear Mr. Anderson: <br />We have completed our review of the December 4, 1990 amendment to the Pit 4 <br />haul road stability report. We believe the remedial measures proposed far <br />landslide areas 1 and 4 to be appropriate. We request, however, that <br />Rockcastle submit a plan indicating tFte area to be affected by the remedial <br />measures, with a cross-section of the proposed drains and a description of the <br />rock material to be used in fabricating tfle drains. <br />With the implementation of these measures we believe that Rockcastle will have <br />rendered the Pit 4 haul road sufficiently stable and the requirements of <br />section IV ,2, of the Agreement will have been met. <br />If you have any questions please feel free to call me or Jim Pen dieton. <br />Sincerely, <br />C~ .~d,t~021s+, ~ . 1 ~ I Ct.,~.tn,~nDt~--- <br />Susan J. McCannon <br />Senior Reclamation Specialist <br />SJM/yjb <br />2828E <br />