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"~ ~ MINREC, INC. 2768 COMPASS DRIVE, SUITE 101 GRAND JUNCTION, COLORADO 81506 PHONE: (970) 245101, FAX 242-7908 NORTH THOMPSON CREEK MINES June 24, 1999 Byron G. Walker, P. E. Division of Minerals 8a Geology 1313 Sherman St., Room 215 Denver, CO 80203 r. ~~:~.a.,.....~ r ne. ran ilci iai ,w r i:,iS Permit No. C-81-025 Dear Mr. Walker: RECEIVED JUN 2 81999 Division of Minerals 8 Geology The DMGs letter dated June 14, 1999 listed some issues to be addressed at the North Thompson Creek Mine. Following are Minrec's responses to the DMG's concerns: With regard to repair of bridges, both bridges are closed to vehicular traffic (behind locked gates). Therefore, the bridges should not have to support light vehicles. Minrec would prefer to dismantle the bridges instead of bringing them up the DMG's standards. The bridge to the portal area was utilized in 1988 to excavate the portals to control mine seepage. It was utilized again in 1998 to backfill the portals. Further maintenance in the portal area may be performed with ATVs. The bridge along the fan access road has not been utilized for may years. It is suitable for foot and ATV travel. Three rules were quoted regarding handling pond cleanings, Rules 2.05.3(4)(a)(ii)(C), 2.07.7(2) and 4.11.4. Rule 2.07.7(2) states: "The permitee shall dispose of solids, sludge filter backwash, or pollutants removed in the course of treatment or control of waters or emissions to the air in the manner required by Rule 4 and which prevents violation of any other applicable State or Federal laud'. Rule 4.11.4 allows for the disposal of noncoal wastes in the permit area. Would it be possible to permit a disposal area along and above the long pond? The cleanings could be buried, covered with soil and the disturbed area vegetated. The environmental effect would be the same as if the cleanings remained in the pond. Your comment regarding the road that crosses the field to the Roaring Fork River is noted. I will work towards obtaining a letter from the landowner. I will initiate the installation of perimeter markers in July. Would you please confirm that access/light use roads need to be marked. My experience is access/light use roads are typically not delineated with perimeter markers.