2009-01-08_INSPECTION - M1988048

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CORPORATE OFFICE 300 S. PHILLIPS AVE. - SUITE 200 P.O. BOX 5829 SIOUX FALLS, SD 57117-5829 PHONE 605-334-5000 FAX 605-334-3656 MOUNTAIN DIVISION 7321 E. 88TH AVENUE - SUITE 200 HENDERSON, COLORADO 80640 303-287-4656 FAX 303-289-1348 May 2, 2000 Gregg Squire Division of Minerals and Geology Department of Natural Resources 1313 Sherman Street, Room 215 Denver, CO 80203 RE: Application for an Amendment to a Regular 112 Permit, # M-88-048, Carr Gravel Resource Dear Gregg: Thank you for sending the pre-operational inspection report. As we mentioned when we met at the site on April 21, 2000, we are revising our reclamation plan for the amendment area. The original reclamation plan for the amendment area was proposed to be water storage reservoirs. The revised reclamation plan for the amendment area contains no water storage reservoirs. The amendment area will be reclaimed in the same manner as the rest of our currently permitted area - as pastureland. A revised drawing of the section is attached. Following is a summary of the reclamation method used on the original permitted area: Stripped topsoil and overburden are immediately replaced in the preceding excavated portions of the mining operation by scrapers following behind the excavator and haul trucks of the mining operation. Permanent revegetation of the backfilled areas of the current permit site occur within the same one or two years following the backfilling and topsoiling, preceded by a temporary cover-crop to enhance the organic content of the topsoil and to preclude erosion, until the permanent grass-seed mixture can become established. This method of an "over-the-shoulder" reclamation technique has resulted in very successful and permanent grass stands on the reclaimed mined area of the current permit site. The same reclamation method will be employed on the amendment area to achieve the final use after mining; reclamation back to pastureland. We will use the same seed mix as in the original area. The seed mixes are listed in the amendment application in Exhibit E. On the revised drawing, you will see that the amendment area will be reclaimed at a height much closer to its pre-mining elevation than was shown on the original reclamation plan for the area. The contour lines on the revised drawing are our most reasonable estimate of the final grade. The final grade is dependent on various factors, including deposit depth and gradation, thickness of overburden layers, and the marketplace. These factors also contribute to the amount of granular backfill to be used in the area with reclamation. We have traditionally replaced approximately four (4) feet of material in the excavation. I M/(-v1re('.1mreav-0 )21)()