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frame developed by Esco Associates. Point sitings were <br />• located along a 50 meter transect stretched out from the <br />sample point location. The 50 points per transect (one point <br />at each one meter interval) comprise a single sample unit. <br />Cover was identified by life form, or as rock, litter, or bare <br />ground. Life form categories included perennial grasses, <br />annual grasses, perennial forbs, annual forbs, shrubs, and <br />noxious weeds. For the purposes of estimating cover, only <br />first hit data were used. <br />RESULTS -------------------------------------------- <br />SAMPLE ADEQUACY CALCULATIONS <br />• Sample adequacy calculations were carried out for total <br />herbaceous cover and are included in Table 2. The <br />Snedecor-Cochran sample size adequacy formula was used as <br />listed on page 15 of the Division's "Guidelines for Compliance <br />with Land Use and Vegetation Requirements of the Colorado <br />Mined Land Reclamation Board for Coal Mining, October, 1988". <br />Twelve samples were taken. The sample adequacy calculation <br />(with 90 % confidence) resulted in a value of 10.2. <br />Therefore, the reclaimed area was sampled to adequacy. <br />r~ <br />z <br /> <br />