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that observed in the previous year, it was below the 13-year average of 9.4 elk/mi2, and the <br />second lowest ever observed during flights conducted employing helicopters. Despite the <br />observed fluctuations in elk densities over the years, and omitting the December 1994 survey, <br />densities in the expanded area exhibit a slight decreasing trend (Figure 1). The low density <br />recorded during the December 1994 survey was likely due to poor ground conditions (patchy <br />snow cover) and the use of a fixed-wing aircraft for the survey. These factors likely affected the <br />observers' ability to detect animals and resulted in under counting. Considerably more elk were <br />observed one month later, January 1995, when the area was surveyed from a helicopter. <br />Figure 1. Elk density on the expanded and Seneca II Mine areas during winter aerial <br />surveys from 1994 through 2007. <br />30 <br />p Expanded area 26.1 <br />25 ----------------- ~ SenecaII area -------- ----- <br />• 209 20.9 <br />~~ -------------------------'~--------------------------- n --------- ------------ <br /> 16.5 16.3 <br /> <br />~ 15 - ~ - ------14. o _ <br />C" <br /> 10.4 <br />^' <br />(~ 10 <br />------ <br />~ <br />- <br />- <br />- 9.3 _ <br />- <br /> 7.3 7.6 n <br />5 --3~- <br />1.9n <br />0 <br />1994 1995 <br />1996 1997 1998 <br />---13-'~------------------ 13, <br />54 ------------------- <br /> ~ 7.66.9 7.46.9 7.6 <br />- - - - 2.9 <br /> ~ <br /> _ <br />1999 2000 2001 2002 2003 <br /> -Year <br />14.9 <br />--- - --- ---- <br />12 <br />.9 <br /> lr-, \ n <br />i' I <br />7.1 <br />5.8 <br />- -- - 3.4 <br />2004 2005 2006 2007 <br />Expanded survey area: 84.5 mil (1994-1995), 89.5 mil (1996-2007). <br />Seneca I1 survey area: 17.5 mil (1994-2007). <br />• Snowfall and snow accumulation, both on the survey area and in the general vicinity, <br />influence to some degree, the number of elk that winter within the extended survey area. The <br />2007 Seneca II Mine Wildlife Monitoring Page 5 <br />... <br />