Laserfiche WebLink
<br />\<# ..:e <br /> <br />l<!e.:.. ',"i:l. D. <br /> <br />~..i.etaL:.::" <br /> <br />_J_ <br /> <br />~ur:e <br /> <br />1 a <br />- -, <br /> <br />:992 <br /> <br />Du.ri:;.g my i!'!S~ec~cr:, t.~e slide mass 'HaS fi.:::n ari:. a~~eared. to:ce d="Ji.:1g out. <br />No wate:::- .....c.s oi:s2:::""led. flowing frcm t.~e slice as ?re'lJ...cusly cesc:::..:ced. and t.'1.e <br />mass appeared. ~o ce c'..lrrent2.y s~aCalized. This .....-eak::ess of t...~e s~=...!c:::.tre <br />ircica-ces t...~e G.arn is ur..safe for full s~orage ur_c':" a satisfac::orj repair is <br />mace, but c'.J..'::"re!'lt2.y j ucged acceptable at gage heigh-c 6. O. <br /> <br />Based on t.'1e results of my inspection, t...'1.ree pr:..;nac:::y deficiencies w-ere <br />oi:se:::"".;ed; 1) leakage t.'-lrough t.~e e!Tll::ankment !-...as caused the st='..lct.ure to <br />ur.st:ablej 2) t...":e uneven crest provides only 1 fcet of freema-...-c.j ar.d 3) <br />spillway disch.arge flow15 along the de~;r.stream tee. '!':'.e mes~ critical. of <br />was the W".stable slope caused by leakage. In or::.e:::- to accomplish a <br />satis factory repair, t..'1e cause ar..a extent of tb.e problem must l::e investigated <br />wi:. t..'1orough2.y ur..c.e!:'StccC... Since t...~e G.arn is s:nalle:::- t..."-:.an t...~e size s~ecified <br />by statute ar..d judged to l::e a Class III categorj, t...":e State Er.gineer w"Culd not <br />re~..:ire engir.eered. :;;lar..s ar.d specifications to :ce a~roved in advar:.ce. I do, <br />hew-='ler, s-:=or.cl', suggest you seek t...'-:e advice of a regis~ereC. prcfessior.al <br />e!"'_S=-:1ee:::- for investigating t..~e problem ar.d deter:ni.ning an effective repair. <br />',.;oul.d l::e glad to meet wi t...'1 you to rev:..e'"", in detail basic principles of dam <br />ccX"..st..-uction ar.d assist you in formulating an accep-cable repair scheme. <br /> <br />re <br />t.1.e <br />these <br /> <br />I <br /> <br />For your refere:;.ce, I have er.clesed a copy of st~~-s which apply to <br />livestock wc.te:::- tanks, a special admi.:1i.sL'C.tive categOl:Y. These sta.r.ca..-c.s are <br />acceptable for cor.st.--ucting or repairing ot..'1er srr.a.ll d.a.ms like tb.e Eureka ~l. <br />If follow-ed, These sta.ndards would provide for an acceptable margin of <br />safety. The ability to predict the l::ehavior of t..'-:e G.arn of course, w-ould l::e <br />enhanced by test:ing of soils ar..d evaluating four..cat:ion material specific to <br />the site. In aC!.C.i. don, ccnst...-ucting drains to coni:--ol leai<age from t..'1.e darn or <br />four.dation ar.d ir.suring adequate compac"tion of t.'1.e scil are the key factors in <br />coX".st-'i..:.cting a safe dam. <br /> <br />I ask t.'1at you cor-tact me at ycur earl.ies~ convenier.ce to set up a ti:ne for a <br />meeting to c.:..sc'...!Ss your plar.s. 1'm sure you wuuld ag=ee it is i:1 eve:::",,!one's <br />!:est interest to complete repairs t.lU.s season. I leok for",-ard to hear:.::.g fom <br />you ar.d. apprec.iate your ccoperation. <br /> <br />Sincerely, ,/ <br /> <br />----\, ,,~y(/.::: <br /> <br />"'~. __Lames G. ~or::leet <br />Sr. P:::ofessicnal <br /> <br />/\ <br /> <br />'" <br /> <br />j , <br /> <br />/<2--::' '/1 <br />...../ -"... <br /> <br />/7' <br />/ <br /> <br />Enginee:::- <br /> <br />';Ql':jk <br />E.."lCS . <br />cc: Keit..~ C. ~epler, Division Enginee::: <br />Jim Boyd 2.I"'..a Kenny Mahannah, Wa-cer Commissioners <br />~ei t...'1 Bakemn, U. S. F. S., Lake'NOCd <br />Garj '!'ellefson, U. S. F. S., eel ta <br />.Uan Pearson, Dam Safety Branch <br /> <br />r:. ;:... .~~. :... ~: ~~.'~:'.'~ <br /> <br />:t r.,; ') r 'e') <br />i."yl. '-I ""'"-=- <br /> <br />~~.=."'~;:~: ;':'~:JJL!~"..",c. <br />~;;.::F.. ~)~G;;:. ._~~) <br />~:0:..u. <br />