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S <br />I~~ <br />@,~~~ Ms. Janet Binns <br />~~~' January 10, 1997 <br />Page 3 <br />10.0 GRAZING <br />Although originally anticipated and scheduled, no grazing occurred during 1996 due to concerns <br />relative to potential adverse effects on revegetation success sampling. <br />11.0 REVEGETATION SUCCESS EVALUATION <br />Revegetacion success sampling was completed by Rocky Mountain Reclamation for approximately <br />109.1 acres of existing reclaimed area and the low sagebrush and big sagebrush reference areas <br />during a period from mid-July through early-August of 1996. The purposes of the vegetation <br />sampling work and subsequent revegetation evaluation were to provide a basis for evaluation of <br />revegetation success at this point in time and to determine revegetation trends for reclaimed mine <br />disturbance areas. Sampling work included field data collection to determine percent vegetative <br />cover, herbaceous production, and shrub density; to identify the presence and distribution of any <br />noxious weeds, and to identify all existing plant species occurring within and in areas immediately <br />adjacent to the study area. <br />The results of the revegetation success sampling and evaluation are contained in a drafr report <br />prepared by Rocky Mountain Reclamation. The draft survey report was only recently received <br />by Kerr and Kerr is currently in the process of reviewing and commenting on the report. On <br />completion of this review and following incorporation of any revisions necessary, either the entire <br />report or an executive summary will be provided for the DMG's information and review. <br />12.0 TOTAL DISTURBANCE SUMMARY <br />Following is a table summarizing the total mining-related disturbance at the Kerr Mine since <br />initiation of mining in 1974. Disturbed lands are categorized by their current use and/or state of <br />reclamation. <br />SUMMARY OF TOTAL DISTURBANCE <br />Regraded Inot topsoiled) 0 <br />Revegetated 1996 70.2 <br />Revegetated 1995 163.5 <br />Surface Facilities and Roads 19.5 <br />Drainage and Sediment Control 19.1 <br />Topsoil Stockpiles 5.8 <br />Reclaimed 109.1 <br />Total 387.2 <br />M:\UT96REC RP! <br />vivvr,yi <br />