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f~.l..C. -Grand Junction, Inc. _ <br />Allied /ndependen( Cofuulf• III I II I II I II IIII III • <br />999 2956 North Ave, #lb <br />' P.O. Bos 41049 <br />Crand Jct., CO SI504 <br />970 -244-8703 <br />September l5, 1999 <br />Elam Construction <br />Attn: Tom Logue <br />1225 South 7`" St. <br />Grand Junction, CO 81501 <br />RE: Slope Stability /Holy Cross Energy Powerline , Vagneur Pit, Pitkin County <br />Dear Tom, <br />I have inspected the referenced pit on September 10, 1999 in regards to the <br />protecting the integrity of the adjacent powerline owned by Holy Cross Energy. This <br />powerline is located to the south of the pit, near the rim. <br />The closest powerpole was found to be approximately 42' away from the rim of the <br />pit, behind the perimeter berm. At that point, the slope of the pit is near vertical and <br />then abruptly changes 30' down to a 60 degree slope. The slope has stabilized <br />under these conditions. <br />It is my opinion that this slope will not fail in a manner causing this closest <br />powerpole to fall over thereby creating a disruption in power or safety concern. My <br />analysis shows that this area has extremely good drainage and rests far above the <br />existing water table. Therefore slope failure due to water related circumstances is <br />unlikely. Most likely, if the slope does fail, it will continue to follow the 60 degree <br />slope angle. If the slope does fail in this manner, the attached drawing shows that <br />the area around the existing powerpole will remain intact. <br />Therefore, since this closest powerpole is safe in regards to slope stability of the pit, <br />the other poles, owned by Holy Cross Energy are also safe. Should you have any <br />further questions regarding this manner, please do not hesitate to cal{ my me at 244 <br />- 8703 ;sue=.... ~ <br />,~' ~~p REC;Sj• <br />Sincerely, ~,oe' •~'~`' En~'as„7 1 <br />Chris Steven Russell '>) _~',,~~Z~- <br />Colorado professional geol ~~nd engir <br />President -A.I.C. -Grand Jun t{~h,';~ft1~` ~~;, <br />F.~ ~~•.I'~t.~ <br />C~~'•i ~ C 1:5~ <br />A.LC. - u full service engineeringJirm Giv:c ~~ `"r`-'=rpl , & Gay''. , <br />