2013-04-19_REPORT - C2009087 (6)

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Pond Number 2006 2008 Capacity Capacity 2010 Capacity 2012 Capacity Minimum Allowable Water Storage Pond 002 171.9 NA NA Not surveyed 84.6 ac.ft. Pond 003 3.7 NA NA Not surveyed 2.1 ac.ft. Pond 004 5.6 1 5.5 5.5 Not surveyed 3.0 ac.ft. engineer. The submitted reports will comply with all requirements of Rule 4.05.9(15). Ponds are also visually inspected quarterly by mine personnel. During these inspections, any drastic change in sedimentation storage or sudden increase in a sediment delta at the inlet to the pond would be detected which could require mitigation. To ensure adequate capacities, and taking into consideration the level of revegetation of previously surface mined surveys, PSCM will commit to capacity surveys every 10 years beginning in 2016. The following table lists the latest surveyed capacities of PSCM sediment ponds: Table 12.4 Sediment Pond Capacities STOCK TANKS There are 13 stock tanks in the PSCM mined /reclaimed area and are all classified as permanent and are certified annually. No new stock tanks were constructed during the 2012 season. WILDLIFE MONITORING Wildlife monitoring was conducted in cooperation with CPW during 2012. The work included: • Monitoring of Golden Eagle nest sites. — A total of 6 sites were identified in Spring 2012 for monitoring. Three were believed to have been destroyed by natural causes. The remaining three nests were monitored. All were inactive during 2012. • Monitoring four (4) known Columbian sharp- tailed grouse leks and checking for new ones Following are the grouse counts at the 4 established leks on the PSCM reclaimed area. — Seneca Mine 1 Lek 14 males Seneca Mine 2 Lek 12 males Seneca Mine 3 Lek 22 males — Seneca Mine 4 Lek 9 males LITERATURE CITED 2012 ARR 6