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were disked several times during the growing season to control established herbaceous vegetation and prepare the <br />site for planting. The heavy disking created numerous planting microsites. <br />Weed Control <br />Survey for noxious weeds was carried out on the Seneca II Mine permit area in 2001. Monitoring was conducted in <br />2001 to determine the need or level of retreatment necessary for areas sprayed in 2000. Canada thistle Cirsium <br />arvense was the primary target species in all control areas, with lesser activity directed towards aeeas of whitetop <br />(Cazdazia drabs}, The applied herbicide consisted of a tank mix of Z.5 gallons of ZZK Tordon and 2.5 gallons of <br />2,4,D with 250 gallons of water. Control areas were sprayed in May and June. A spot spray gun was used to <br />concentrate control activities on target areas, reducing potential impacts to adjacent desirable vegetation. The <br />herbicide mix, based on recommendations from the Colorado State Extension Service, was mixed and applied by the <br />Seneca Mine Reclamation Manager who is a certified applicator. The weed control areas will continue to be <br />monitored in 2002 for effectiveness and necessary retreatment. <br />Reveeetation Monitorine <br />Revegetation monitoring of permanently revegetated areas was wnducted during the summer of 2001 by ESCO <br />Associates, Inc. The 2001 annual revegetation monitoring report is submitted as a separate document (ESCO and <br />SCC, 2002). <br />Crazin¢ <br />bong yearlings grazed in the Pecoco Pasture during 2001.On May 15'", 210 head were placed in the Pecoco Pasture. <br />On July 15'", all cattle were moved off the Pecoco Pasture. This resulted in 171 animal unit months on [he Pecoco <br />Pasture. Since Seneca was in the process of realigning the fence and working on drainage channels in Wadge <br />Pasture, no cattle grazed the Wadge pasture in 2001. <br />This grazing scheme resulted 171 AUMs of grazing in the 210 acre Pecoco Pasture, which produced 276 AUM of <br />forage based on 2000 field data collected by ESCO. The grazing scheme for the Pecoco pasture resulted in 171 <br />AUMs used. The utilization was 62%. <br />4 <br />