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utiar•.EtcROU .rr <br />F.tiGENt;tiRitiC, & <br />ENBULONA1ChrCAL <br />5oun taps <br />Orvtc~s <br />Eioatc~n <br />ts2as;.r<7.c~sett. <br />CE.rrcin~d <br />ao,~,> <br />Hartford <br />C J;lHtC.ICdI <br />s.E,< ran~e7c5 <br />1.RiSjfllY7Gt <br />R-tactch~ster <br />rVru- flrr:npSt!u'r <br />'~c:varw <br />,'t4 ~~ Itrseu <br />[4+rtland <br />Drtnirr <br />RYn7lte~ker <br />:.~'~~ ktr!k <br />Sea Ilfcg~u <br />C~rGrcnua <br />$an Fralicisco <br />f, idr; ~rttin <br />1Vashlnr;t~=r <br />1 ~ls,+.., , v'n7irabit. <br />s Febr~arv ztx)2 <br />Filc Nwnber 27630-(H)2 <br />City of Greeley <br />J1C~ IOth Street <br />Third Fiaor <br />Greeley, Colorado 80631 <br />Attention: Todd Wihiants <br />Subject: Backtill Cviix Design Report <br />25i° Avenue Gravel Pit Storage Slurry Nall <br />Greeley, Colorado <br />Todd: <br />t'tdlt?Y ~T, titttflCi7, tfiC. <br />ll0 t~Ch Street <br />Sui#c Gh(7 <br />Derver, C:U t~t72f.YL--5262 <br />-E ~E: 3J3.5?t. f tOp <br />fax: ?43-a3~k.1777 <br />F.mai(. DE~'G~HalrvAldrich.:rom <br />Haley & Aldrich, Iuc. is pleased [a present the testing results of a demonstration soil-cement- <br />bemonite backfill mix design for the slurry wall constntctian at dte 25"' Avenue Gravel Pit in <br />Greeley, Colorado. The work was completed in accordance with contracts with the City of <br />Greelev dated 01 Octabc;r 2001. <br />Included within this report are: I} the necessary engineering criteria for the backfill: 2) the <br />descriptions and laboratory testing results for backfill components; 3} the pra;edures used for <br />preparing the backfill mix, 4) the laboratory testing results of the mix design; and J) <br />guidelines for the mix design for the backfill. <br />Haley & Aldrich appreciaus [he opportunity to provide geotechnicat support on this pmyect. <br />If you have any questions or require further assistance regarding this report dtt ~ tact <br />this ofttce. a~_~wOO RF~i~"ryih <br />Sincerely yours, <br />HALEY 8r, ALD/Ri/C~'i, SNC. <br />~L a` "'~,' / I' l/ Cis-~t_.-„ -_.._. <br />1ayn~ Davenport- E.1. i <br />$laft EnClnfiR <br />Tracy L t~yn n, P..., P.G. <br />Senior Vice P 's t <br />Enclosures <br />Steven <br />Senior <br />(. .i42uJIX-l547o3f ('eJCpYbad-i-I ,i .~i lhx=g .J S~ee:fianr :~~e:k~±Il;ri'AIIX IU.l Y)I{1'dir <br />~G~e <br />~ !8<0 <br />