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• Revegetation Monitoring <br />Revegetadon monitoring of permanently revegetated areas was conducted during the summer of <br />2006 by ESCO Associates, Inc. The 2006 Annual Revegetation Monitoring report is submitted as <br />a separate document <br />• Grazing <br />Cattle (600 long yearlings) were moved on to the Seneca II redairned area between July 25~ and <br />August ]6+s. All cattle were moved off the Seneca II Mine area between Septembu 18~ and <br />September 22°d 2006. See attached 2005 Grazing Plan Map for pasture locations. <br />This grazing scheme resulted in a total of 480 AUM's for 2006. <br />30 daps (x) 600 head = 18,000 animal days (/) 30 days = 600 animal months (x) 0.8 <br />AUM/animal = 480 AUM's <br />Total = 480 AUM's <br />Arrumptionr. 1 laugyearling = 0.8 AUM, requiring 648 pounds of forage per month. (One AUM reguinr <br />810 poundr °f forage). <br />The AUM usage is calculated using the following assumptions: <br />Arrumptiour <br />. Average production = 2,219lbs./acre (tee 2004 Reyegetation Monitoring Report) <br />Tota! reclaimed area = 2213 otter <br />One AUM reguirer 810 lbr. aJjorage <br />2,2] 91bs/acre (x) 2,213 aces = 4,9] Q6471bs. of total forage produced <br />81016s. of forage (x) 480 AUM's = 388,8001bs. of forage required; <br />Therefore, <br />388,800 (/) 4,910,647 (x) 100 = 7.9 % utilization of the total Seneca II reclaimed azea <br />CHRONOLOGICAL HISTORY OF REVEGETATION <br />Total areas revegetated prior to aad in 2006 at the Seneca II Mine are shown on the Seneca II 2006 <br />Annual Reclamation -Seeded map in the exhibits section of this report <br />SEDIMENTATION POND SURVEYS <br />SCC is required by Permit C-80-005 to monitor sedimentation ponds for sediment storage capacities. <br />This schedule provides a sediment yield history and gives advance warning to operations personnel <br />when sediment clean-out work is required. In accordance with Rule 4.05.6(11)(c), SCC visually <br />inspects each pond a minimum of quarterly each yeaz. During these inspections, any drastic change <br />in sedimentation storage or sudden increase in a sediment delta at the inlet to the pond would be <br />detected which could require mitigation. <br />Based on the 2006 survey, all sediment ponds have sufficient sediment storage. Additionally, all <br />• ponds have been discharging in compliance with the approved NPDES permit effluent limitations. <br />4 <br />