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~~;" ~ ~"T Geotechnical Engineennp and lalaturials Trst~np <br />January 14, 1950 <br />Interrountain Technical Ser.ices, Inc. <br />561 C:urth Sparn Drive <br />Grand Junction, Colorado X15"'. <br />.1ttr.: i•ferritt Dist~q::t <br />n. e:: ldestern S1^pe Carbo:;, :,rr 1::~:;*_ 51.,rr~• Pi sposal P.rea, <br />Haca}anest ::ine, Jc5 i~ i3-i <br />Ce•.~tlemen: <br />We have co;nPleted our studi^s `or t'~e referenced dis-,•c~al <br />::ics. Attached are copies of our r.~tser•.~a*_iens and azaly_ sc: <br />• for supporting, the existing sgce•>::e t~locla, ir. 3rd East, to <br />enable them to resist the e~:pccte~J hvdrost::t_c plus active <br />earth pressures from rita pro}~osed sl.urr~• dzsposa7.. The rewm- <br />~,.cnded suppor[ columns are ~ho~m .,;~ sh~:ec i~ ci 6 and cons is. ,: <br />of 1.121;31 columns welde.; to ] in~h-~latcs i~nlted to the ceiiin <br />ar.d floor of the drift. '1!,e. cul~i:r.n:; are dcs:pneei r_o he }~l~.ued <br />,r. atout 3 foot cr_nters at chc j~,in~s :n the Mocks. <br />we recommend that. the c:ispos.~i area be al)owed to drain <br />help reduce the ex~ ected h}drestatic Ares ~.~re ar.d allow r.he <br />:Murry material to co:ao)iur,te a-n.i reduce the acti~•e earth <br />~:essures. <br />If you have anv c;uestions, please cal;. <br />5i;icerely, <br />1;E0 TESTII\G LA°OR',TORIES , 1NC . <br />\~ ~ ~~ <br />Andrew A. Porter, P.E <br />;'resident `-"~''~ <br />.,,Q~'vNe k~,i~'~~~ <br />~: c o•o~~ <br />:-~ ?: <br />:po ?`` ~ <br />1 '. F V~: i <br />?.O. Box 3142 • 3224 Nichway G & '1.4, tdo. 3 • Grand Junction, Colorado B75u2 . 303 - 4?4 9EiiB <br />