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C~ <br /> <br />• <br />Sediment Survey Results <br />Pond Year Surveyed Capacity lac-ftl <br />002 1993 186.26 <br />003 1993 5.06 <br />004 1993 B.2B <br />008 1993 6.98 <br />Avq. Yearly Sediment (ac-ft) <br />0.15 <br />0.003 <br />0.12 <br />0.05 <br />From the past history of sediment delivery to all of these ponds there should still be more <br />than adequate sediment storage available. SCC did survey ponds 004 and OOB In 1998, but was <br />unable to locate the previous survey information. Based on the information provided above, <br />SCC recommends [he next sediment surveys be conducted in 1999 for all four sedimentation <br />ponds and a complete evaluation can [hen be conducted. <br />SCC is required by Permit C-80-005, Volume 12, Tab 13, Appendix 13-9 (from TR-21) to <br />provide as-built drawings for all temporary stock tanks that were constructed in [he <br />previous year. Three new stock tanks were constructed durl ng 1998. The as-built <br />certifications are being prepared at the present time and will be submitted separately [o <br />the D1 vision as soon as construction is complete. <br />Wildlife Monitoring <br />Duri nq April 1995, a Columbian Sha cp-[ailed Grouse lek was discovered on [he reclaimed land <br />at Seneca II Mlne, (lek M11. Powder R1 ver Eagle Studies, a wildlife consulting group, <br />st udted the lek Cor nine days. Between B and 12 males regularly attended and displayed at <br />the site in 1995. Again in 1998, Powder River Eagle Studies monitored [he site. The highest <br />count per day for 1998 observations was 15 males and 2 females on lek M1. During May of <br />1998, another lek Ilek N21 was discovered in the Wadge pasture. A high count of 12 males <br />and 2 females were observed at 1ek N2. The addi[conal lek and many sightings indicate [hat <br />the sharp-[a 11 ed grouse population usl ng the Seneca II ceclama Lion is increasing. <br />Monitoring data can be found in the wildlife tab. <br />Big game aerial survey data, eagle nesting activity and other wildlife monitoring data <br />collected during Jan uaty 1998 at Seneca II Mine is presented in Wildlife Tab. <br />ESCO Associates Inc. 198 9a. 1987 Revegeta[con Monitoriny Report, Peabody Seneca II Mine <br />Literature Cited <br />7 <br />