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Weed Control <br />A survey for noxious weeds was carried out on the II -W mine area in the spring of 2013. Monitoring <br />was conducted to determine the need or level of re- treatment necessary for the areas sprayed in <br />2012. <br />Canada thistle was the primary target species in all control areas, with lesser activity directed toward <br />areas of hounds tongue and whitetop. The applied herbicide consisted of a tank mix of 2.5 gallons <br />of 2.5 gallons of 2,4,D and 250 gallons of water. Escort, at the rate of one (1) ounce per acre was <br />spot sprayed on whitetop. Control areas were sprayed in June, July, and August. See the attached <br />2013 Weed Spray Location logs for the extent of weed control spraying. <br />A spot spray gun was used to concentrate spraying activities on target areas, reducing potential <br />impacts to adjacent desirable vegetation. The herbicide mix, based on recommendations from the <br />Colorado State Extension Service, was mixed and applied by an outside contractor who is a certified <br />applicator. The weed control areas will continue to be monitored in 2014 for effectiveness and <br />necessary retreatment. See the attached weed control daily logs for more detailed information of the <br />2013 herbicide application. <br />• Grazing <br />Cattle (134 cow /calf pairs) were moved on to the Seneca II -W reclaim area for 27 days between Sept <br />5th and October 15`d. This grazing scheme resulted in a total of 214 AUMs for 2013. See attached <br />2013 Grazing Plan Map. <br />Assumptions: <br />One (1) cow /calf pair = 1.2 AUM <br />One (1) AUM requires 810 lbs. of forage <br />40 days (x) 134 cow /calf pairs x 1.2 = 6,432/30 days = 214.4 animal unit months (AUMs) <br />1914 lbs /acre (x) 685.2 acres = 1,311,473 lbs of forage available (extreme drought) <br />810 lbs (x) 214.2 AUMs = 173,502 lbs of forage required <br />Therefore; <br />173,502/1,311,473 (x) 100 =13 % utilization of the Seneca II -W reclaim area. <br />CHRONOLOGICAL HISTORY OF REVEGETATION <br />Total areas revegetated prior to 2013 at the Seneca II -W Mine are shown on 2012 annual <br />reclamation report Chronological Seeding Map. The 2013 Seeding area is the area of stockpile BB <br />and the pond 16A reclaimed area depicted in the 2013 Planned reclamation map found in the 2012 <br />Annual reclamation report. <br />SEDIMENTATION POND SURVEYS <br />SCC is required by Permit C -82 -057 to monitor sedimentation ponds for sediment storage <br />capacities. This monitoring is conducted by physically surveying each pond each year. This <br />