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III IIIIIIIiillliiil <br />999 <br />United States Department of the Interior <br />OFFICE OF SURFACE MINING <br />Redamanon and Enfoaemenr <br />1999 Broadwry, Suite 3320 r `' <br />Denver, Colorado 80202-5733 R C(^, EI V ED <br />~ ~ p 1995 <br />March 8, 1995 ~ol~yj1j1elgls~Ge010gY <br />)iVia10 <br />Ms. Susan McCannon <br />Colorado Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Dear Ms. McCannon: <br />The Office of Surface Mining (OSM) has reviewed the January, 1995 <br />Kerr Coal Company-Marr Mine Modification (Permit No. C-80-006). <br />The review was limited to the proposed backfilling and grading <br />plan. OSM did not conduct mass balance calculations, drainage or <br />culvert calculations, or review revegetation. The proposal was <br />reviewed to determine if the postminng topography meets the <br />configuration that was agreed upon by OSM in December, 1994. <br />OSM finds that the postmining configuration is consistent with <br />the December, 1994 agreement. The proposal results in a shorter <br />drainage valley with rounded features that are more natural <br />looking. The drainage alignment is more meandering and the <br />ridgeline or saddle connecting the east and west ridges blends <br />into and complements the reclaimed and undisturbed land. <br />Should you have any questions concerning this matter, please <br />contact me at 303-672-5557. <br />Since ly, <br />Michael Rosenthal <br />Chief <br />Physical Sciences Branch <br />cc: John Retrum <br />Solicitor <br />