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ERO Resources <br />TABLE 7 (CONTINUED) <br />• WESTERN FUELS-UTAH, INC. <br />DESERA0O MINE <br />SUMMARY OF SHRUB HEIGHT CLASS AND DENSITY DATA <br />COLORADO WILDRYE COMIil1NITIES <br /> <br />Shrubs Height <br />Class Frequency z Relative <br />Density Shrubs/ <br />Hectare <br /> AFFECTED "D" PORTAL <br />~temisia trident ata A 35 46 3,425 <br /> 8 24B <br />AtrjQlex canescen s A 215 51 3,775 <br /> B 88 <br /> A 4 1 50 <br /> A 1 <1 13 <br />~,rcooatus vermic uiatus A 2 2 ll3 <br /> 8 3 <br /> C 4 <br />Tetradvmia ;nirios a A 3 ] ]00 <br /> B 5 <br />Descriptive Statistics In=20, M=29.9, s=8.43, nmin=l3) <br /> AFFECTED "B" PORTAL <br />Artemisia trident ata A 1 9 413 <br /> B 6 <br />AtrjRlex conferti folia A 14 76 3,325 <br /> B 20 <br />Sarcobatua vermic ulatus A 1 6 250 <br />• C 4 <br /> <br />Tetradvmia gpj~ 8 3 2 100 <br />Descriptive Statistics 1n=20, M=17.6, s=7.28, nmin=2B) <br />A = 0.25 - 0.75 meters <br />8 = 0.75 - 1.50 meters <br />C = 1.50 - 2.25 meters <br />D > 2.25 meters <br />M = Sample Mean <br />c = Sample Standard Deviation <br />n = Sa le Size <br />nmin =~inimum sammpple size required with a 20x reduction in the sample <br />mean with 60x confidence <br />• <br />II.F-74 <br />