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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />DIVISION o E <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 MINERAL S <br />FAX: (303) 832-8106 ~t <br /> GEOLOGY <br /> RECLAMATION <br /> ' MINING•sAFETY <br /> Hill Owens <br /> Governor <br /> Greg E. Walther <br /> Executive Director <br />December 5, 2002 Ronald W. Canany <br /> Acting Division Director <br />Grant Johns <br />American Civil Constructors, Inc. <br />410 20th St., Ste. S-1 <br />Glenwood Springs, CO 81601-4272 <br />Re: 2002 Vegetation Sampling Data <br />Rimrock Mine (Permit No. C-89-074) <br />Dear Mr. Johns: <br />Please find enclosed a copy of the 2002 vegetation data collected at the Rimrock mine <br />during early August of this year. <br />Unfortunately, the vegetation cover at the site is well below 90% of the cover standard of <br />41 %. The cover standard for the site was derived from actual baseline data collected on the <br />pit area prior to mine disturbance. At this point, the data would indicate the site is not where <br />it needs to be for a Phase II bond release, let alone a Phase III bond release. For Phase III <br />release, 90% of the standard must be achieved for the final two years of the liability period. <br />The good news is the production data collected (435 Ibs/acre) indicates the site is very close <br />to meeting 90% of the production standard of 463 Ibs/acre (90% of 514 Ibs/acre). Also, <br />although there is no shrub standard, the shrub density is very high at over 11,000 <br />stems/acre. We believe that the extended dry conditions are to blame for the limited amount <br />of vegetative cover this year. Improved moisture conditions should benefit the site greatly. <br />If you have any questions about the data or the process in general, please contact me. <br />Sint ely, /'6~~ <br />K A. Gorh/l/a~Ym <br />Environmentai Protection Specialist <br />