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• (Melilotus officinalis), alfalfa (Medicago sp.), crested wheatgrass (Agropyron <br /> cristata), fescues and other wheatgrasses. Depending on success, cover ranged <br />from 0 to 75 percent, and productivity ranged from 100 to 3500 pounds per acre. <br />Average figures for cover and productivity would be approximately 30 percent and <br />1400 pounds per acre. <br />General Observations <br />The productivity estimates given for native plant communities in the pre- <br />ceding paragraphs are based primarily on an extrapolation of standard SCS esti- <br />mates for relatively similar conditions in various recognized range sites. <br />Observations on the site and measured data in nearby areas suggest that these <br />estimated ranges may be too high for local conditions. Measurements of produc- <br />tivity in sagebrush-grassland and mountain brush communities a few miles west of <br />. this site in 1976 indicated no native communities were producing more than 500 <br />pounds per acre. From extrapolation of these measured data and observations on <br />site, these observers estimate that local productivity would likely average <br />about 30 to 60 percent of the corresponding SCS estimates. <br />Backfilled Mine Area - Monitoring <br />Currently, Sun Coal Company is monitoring revegetation success for the <br />backfilled area in accordance with an approved CMLRD plan. Detailed aspects of <br />the revegetation monitoring plan are presented in Section 2.05.4. <br />Endangered Species <br />A review of federally listed endangered plant species and a check of spe- <br />ties observed in the permit area was made to determine if any endangered plant <br />species are known to occur at the Meadows No. 1 mine. None of the species <br />. listed in the attached species list qualify as "endangered." <br />- 131 - (Rev. 5/86) <br />