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<br />Mr. Bill Bosworth <br />Sheridan Enterprises, Inc. <br />RECEIVED <br />MEMORANDUM <br />T0: <br />FROM: <br />SUBJECT: <br />DATE: <br />SUMMARY: <br />Western Resource Development <br />iiiiiiiiiiiiiiiiii <br />SEP 1 1 1981 <br />'MINED LAND RECLgMgTION -COAL <br />LCO_lL'7T pFPl, OF ZIATURAL RESOURCES <br />Woody Plant Density Sample Size <br />Waste Dump Project, Garfield County, Colorado <br />3 September 1981 <br />On 11 August 1981 David Johnson discussed problems of achieving sample adequacy <br />for density of woody plants for both vegetation types at the Waste Dump Project. <br />We are using a rectangular quadrat 1 by 50 meters. We reported the following <br />results: <br />No. Samples No. Samples <br />Vegetation Type Taken Required <br />Shadscale/Bromus 51 91 <br />Shadscale/Elymus 51 203 <br />Additionally, it was pointed out that sample adequacy for woody plant density <br />is a problem for several other vegetation studies of ours in Colorado. <br />We discussed the projects, comparing the number of samples taken and the <br />number required. <br />Ms. Emrich concluded that 50 quadrats per vegetation type would be sufficient <br />for establishing the baseline standard. <br />cc: Sandy Emrich - CMLR <br />Mike Savage -CMLR / <br />Brian Munsen - CMLR / <br />