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inspects each pond, at a minimum, quarterly each year. During these inspections, any drastic change <br />in sediment storage /sudden increase in a sediment delta at the inlet of the pond would be detected <br />and mitigation implemented, if necessary. <br />The results of the 2012 annual survey indicated that all ponds are within the minimum requirement <br />for storage and are shown on Table 12.3, Sediment Pond Capacities. <br />STOCK TANKS <br />No stock tanks were built in 2012. <br />REFERENCES <br />2010 Annual Reclamation Report, Seneca II -W Mine, Routt County, Colorado. Submitted to the <br />Division of Reclamation, Mining and Safety in March 2011 by Seneca Coal Company, Hayden, <br />Colorado <br />ESCO Associates, Inc., 2010 Revegetation Report, Seneca II -W Mine Reclaimed Areas, Routt <br />County Colorado. Prepared for Seneca Coal Company, Hayden, Colorado <br />2011 Annual Reclamation Report, Seneca II -W Mine, Routt County, Colorado. Submitted to the <br />Division of Reclamation, Mining and Safety in March 2012 by Seneca Coal Company, Hayden, <br />Colorado <br />ESCO Associates, Inc., 2011 Revegetation Report, Seneca II -W Mine Reclaimed Areas, Routt <br />County Colorado. Prepared for Seneca Coal Company, Hayden, Colorado <br />4 <br />