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• <br />ADDITIONAL VEGETATION INFORMATION <br />ADDENDUM TO APPENDIX G, SUBSECTION 2 <br />VOLUME III <br />HAYDEN GULCH MINE PERMIT APPLICATION <br />1.0 INTRODUCTION <br />The information contained in this report is being provided as an addendum <br />to Appendix G, Subsection 2, Volume III, the vegetation reference areas <br />study. The need for this information became apparent after technical <br />review of the reference areas study by CMLR personnel. Their review indi- <br />cated that intensity of sampling was not adequate for some of the sample <br />areas and parameters; these would therefore require resampling. <br />• <br />The original study sampled four (4) vegetation types on the area to be <br />mined, and four (4) reference areas. These were the aspen, sagebrush, <br />Gambel oak, and chokecherry vegetation types. Each was sampled for produc- <br />tivity and cover of herbaceous vegetation and density of woody vegetation. <br />Subsequent to the technical review, discussions between Mr. Mike Savage and <br />Mr. Brian Munson, Reclamation Specialists with CMLR, and Mr. David Duba, <br />Senior Environmental Engineer with Morrison-Knudsen Company in Boise, <br />Idaho, determined the additional requirements for vegetation sampling. <br />These were listed in a memo from Mr. Savage to Mr. Munson, dated July 27, <br />1981, and attached to this report. The following parameters were listed <br />for resampling: <br />A. Aspen community <br />1. Reference area productivity and woody plant density <br />2. Pre-mine productivity and woody plant density <br />B. Sagebrush community <br />1. Pre-mine productivity, <br />2. Reference area cover <br />cover, and woody plant density <br />C. Oak community <br />• <br />1. Pre-mine woody plant density <br />2. Reference area woody plant density <br />637C 1 <br />