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~Jf; I C. ?B/2GOo <br />1~E ~Gf7QlifOf! O'f L{la C:af71 heS ~F~ I'i4r^at°.C S'Gt'ifSCaftt~ lP1CP 2S~ ,"8eY"^ 'X3~Ti~° 'i1GS1 '~k'tl'~ii i~~ `c3rqE p'fi~'. fi'Pp'S ~t~ ~u~9 ~~6~14i~ti~2fl1 S~4GE {71?EnQ <br />~l1£ ~O ~FI@ DI~SS l]02L1c 3[1U~ lllt. 22~°~a C9*Sr1~3f2'~It~i1 tl 6~'F° 17~D@ ~pl~~Yb~81/ ~ ~~~lCC1 t~'!C "~2(ll W85 f2tiL'd ?.iCls2iI5i~C'dON ~~~ ~ ZAfD .C.xO~SRe- <br />.'95tfiCLIOfS !S fSCOf11€11Bfi~8d. <br />Presentlv it is pianned to rehabil9*.ate and enlar4e this dam to 250 AF snri8h preiiminarV work occurrina nsxi vear after the reservoir is drained <br />tfis fall and then the actuai dam buildinq work occurrinq in 2010 We hav~ not vet seen anV plans for this work - sven conceptuai plans. It is <br />verv important to keep us infiormed and allow us to participate even in the preliminarv staaes so that fatal flaws are not encountered w~th a <br />#inal submittal All critical problems will be addressed durinq this work• however it is verv imnortant to cut the dead trees and drain the <br />reservoir ASAP due to the deteriorated soillwav and dead pine trees.^ <br />If this dam were to fail in its aresent size and condition it would most iikelV cause siqnificant damaqe to I-70 and to commercial <br />establishments in Silverthorne. <br />Based on this Safety Inspection and recent file review, the overall condition is determined to he: <br />~ f71) SATISFACTORY ^ (72) CONDITIONALLY SATISFACTORY <br />^/ (73) UNSATISFP.CTORY <br />-- -- -- ITE-MS REQUlRING-ACTION-BY OWNER TO-IMPROVE 7HE SAFETY--OF T-HE DAM---------- <br />MAINTENANCE • MINOR REPAIR • MONITORING <br />~(80) PROVIDE ADDITIONAL RIPRAP: on upstream slope of main dam and re-g~aded, which can be done with planned rehabilitation <br />~(St) LUBRICATEANDOPERATEOU7LETGATESTHROUGHFULLCYCLE _________________________________.__________-------- <br />-------------------------------------- <br />~(82) CLEAR TREES AIJDIGP. BRUSN FROM: D28d $e0S f~Ortl dOw~stre2R1 SIoQe ASAP. <br />~(83) INITIATE RODEM' CGNTROL ?ROGFWM AND PRGPEP.LY BACKFILL EXISTiNG HGLES: ----- <br />--------------' ----------------------------------------------- <br />~(84) GP.ADE CREST TO A UNIFORtit ELEVATION WITH DRFlINP.GE TO THE UPSTREAM SLOPE: Can be done wifh Qlanned rehabiliEation <br />~(85) PROVIDE SURFACE DRAIMAGE FOR: ------------------- <br />--------------------------- ----- -- <br />----------------------------------------------------' ----- <br />Q(e6) MONITOR: Visuaily invert of pipe spillway and the inflows. Also monitor ihe dead trees on the downstream slope reguiariy until the reservoir can be is <br />drained <br />~!87) DEVELOP AND SUBMIT AN EM1AEP,GENCY AC710N PLAN' <br />~(68) OTHER Instalf Qumps and drain the reservoir <br />~ (89) OTHER <br />'Nill be required with the reha6ilitation <br />-- ---------- -------------- - - <br />ENGINEERING - EMPLOY AN ENGINEER EXPERIENCE~ IN DESIGN AN~ CONSTRUCTiON OFDAMSTO: (plans and Specifications must be app~oved by State Engineer pnor to construc6on.) <br />~(90) PP.EPARE PIANS ANd SPECIFICATIONS FOR REHP,BILITATION OF THE OAM: as planned. For fhe work to occur in 2010, ihis needs to be submitted in 2009 <br />~(91) PP.EPAP.EAS-HUILTDRAWINGSOF: - ---------------~----- <br />--- ------ ---------- -------- <br />GIy2j PERFnRM A GEDTECHNIGAE.I'f~NESTiGATiON i O EVALUATETHE S'+itEiLll'3 C'F ~I-fL D:+tv1: <br />-------------------------------------------------- ----------- <br />i~ (93) PERFORM R HYOR~L[3G(C SNPY'r0 GETERMINE REQUIRED SPILL'AlAY SILE ~,~ded fo~ the plann0d ~eh8bili43tio0 and 0t7iefgBrtleOt <br />~(94) PP,EP.4RE PLANS PND SPECIFICATI6N5 FOR AN ADEQUAT~ SFiLLINAY: needed to enSU~e I'ehabilitaYed Spillv/ay IS ad0qU8te <br />~(95) SETUPAMON~TORfNGSYSTEMfNCWDINGWORKSHEETS,REDi1CEDDAiA~,NDGRRPHEDRE5ULT5: ____________________. <br />~(96) PERFORMANINTERNALPNSPECTIONOFTHEOUTLET' ___..______________-------------------~ <br />---------------------------------------------------." <br />D~s7) oTHER: Submita hazard classification reportforthe enlarged dam <br />Q fsa) oTHEP: 5u6rnif a concePfuai plan #or our reviewto snake sure thaf the general plan has no fatal flavrs. Rlsa submit a scheduie of the planned a~ark <br />C{99J 6THER: --------------------------------- <br />~ ~ ~ ~ • ~ ~ ~ ' ' • ' • <br />~(101) FULL STORAGE FT. BELOW DAM CREST <br />~(102) CONDffIONAL FULL STORAGE RESTRICTED LEVEL _ FT. BELOW SPILLWAY CREST <br />OFFICIAL ORDERTO FOLLOW F7. GAGE HEIGHT <br />a(103) RECOMMENDEDRESTRiCTIGN - <br />~ NO STORAGE-MAINTAIN OUTLET FULLY OPEN <br />~(104) CONTINUE EXISTING RESTRICTION <br />REASON FOR RESTRICTION <br />Deteriorated pipe spillwav and larqe dead beetle infested pine trees on the downstream slope <br />ACTIONS REQUIRED FOR """"'T„'.'"' r"' '" ^^ CONTINUED STORAGE AT THE RESTRICTED LEVEL: <br />All recommendations listed Item (82) (86) and then Item (881 is most important in the interim this Vear until the planned rehabilitation. <br />Engineer's ~ ~ ~ ~ignature ~ ~ DATE: ~cri~/ ~QO~ <br />Signature INSPECTE BY OWNER/OWNER'S R' RESENTATIVE <br />Page 3 of 4 <br />ENGII~EER'S IIdSFECTiOY~ R~PO~ i <br />DAta4 I.D.- :EO i 17 <br />DAP~1 NAME: OLD DILLOf,! <br />