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<br />{2~ .1
<br />C} .J ..,
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<br />Par 13
<br />
<br />D4drag ttl~ contract period, th~ contractor shall
<br />make "all necessary preparation, and shall maintain
<br />reQ~ir~d tl~W$ in the West Pueblo, Bessemer, and
<br />H'r!'p.B.1I ditch.s. All div.rsion operations shall b.
<br />subj.ct tq the provisions of Paragraphs 61, 14, and
<br />7(\.
<br />
<br />c. Closure of divenion conduitS.-ln the initial
<br />construct;\on for PUilblo Dam a concrete plug was
<br />construGtl!ld in the river channel. Incorporated into
<br />this plug are two diversion conduits and a bypass, as
<br />shaw" on the drawings The contractor shall utilize
<br />theta conduits and bypas!. as part of his diversion
<br />works.
<br />
<br />Concr.t. placem.nt for Buttr... 16 .hall b. d.l.yed
<br />until att.r the IIQOd ....on of 1913 to allow the top
<br />01 the existing plug to be u..d lor paning flood
<br />flow.. On October 16, 1973, closur. of tha
<br />d;version conduits .h.1I b. .ccomplished by
<br />installing. ~h, ~9vernm8nt-furnished stop1ogs over
<br />the 8ntr~o.c,s 19 the conduits, storage of water in
<br />the re~~fvoir w.u.lGe'gin, and minimum downstream
<br />w.t.r r~.\\\ll~~!lt1. ,hall b. pa"ed through the 4.
<br />by 4-fo.\1.1 ~"9!IS. The bypass gate shall be ope.rated
<br />bV the cQptractor as directed to furnish minimum
<br />downstream water requirements. When the reservoir
<br />water surface rtachs.s ~n. elevation sufficient to pass
<br />downstream watlr reQ4irements through the river
<br />outlet, the byplss ~\~ .h.II be closed Th.realter,
<br />a"d until the Ind of the contract, the contractor
<br />shall operate the river outlet works and any of the
<br />spil!way outlet works as may be neCBlSsrv to
<br />provid~ for such Ilows as will be dir.cted. It is
<br />{l;ntiC;:tP.~ted that the reservoir will be at elevation
<br />419lp by May 1, 1914
<br />
<br />From d.ate of award of contract and until the
<br />installatio,1j1 of stopJogs to close off the diversion
<br />cooduits l!.o.1', bYPI.. i. complet.d, the contractor
<br />shall remov~ all f1oltabl. d.bris Irom th.t area.
<br />upstream 9.t the concrete plug and below elevation
<br />4750. Th.t...lter, and until the .nd of the contr.ct
<br />pet iod. the contractor ,hili perform s.uch
<br />maintBt1anCe af.ld erect such log booms and other
<br />structU~B~ as may be necessary to maintain that Brea
<br />upstream 01 the spillway and outlet works Ir... and
<br />c1eer 01 all floatable debris. The cost of removal 01
<br />all floatabl. debri. .od the COlt of meintainiog the
<br />ar.a free of floata.bl. d.bri. shill b.. includ.d in the
<br />applicable pr:ices bid in the schedule for clearing and
<br />for dive~sion and, care of river during construction
<br />and removal ot. water from foundations.
<br />
<br />d Payment.-Payment for care of the river during
<br />
<br />SPECIFICATIONS NO. DC,6945
<br />(SUPPLEMENTAL NOTICE NO.3)
<br />
<br />construction and removal of water from
<br />found.tions will be made at the lump,sum price bid
<br />thlrlfor in the sch.dula. Except as oth.rwise
<br />provided io Paragraph 81, the lump-sum price bid in
<br />the schedule for care of river during construction
<br />and r.mov.1 of wat.r Irom foundations shall includ.
<br />the co.t of furnishing all labor, equipment, and
<br />materials for constructing cofferdams, log booms,
<br />dike., channels, flum.s, and oth.r t.mporary
<br />diversion and protective works; removing or leveling
<br />such works and disposing of m.terials, where
<br />required; making required closures; maintaining the
<br />work free from water as required; grouting drains
<br />aod .umps; cl.aning chut.s and stilling basins after
<br />diversion; and all oth.r work r.quir.d by this
<br />paragraph,
<br />
<br />The contr.ctor'. water control pl.n for care of the
<br />river Ind removal of w.ter from foundations shall
<br />be "n ouch form "' to alloclte the total lump-sum
<br />pri... to not more than .ix major dlvl.ions of the
<br />work to be performed under the item of the
<br />schedule for care of the river during construction
<br />aod removol of wit.r from foundation.. Each major
<br />divi.ion of work .hall be outlio.d ind .hall- be
<br />identified by titl. and the wat.r control plan shall
<br />.how the proportionate plrt of the total lump-.um
<br />price allocat.d to .ach such major division 01 work.
<br />Th. lbov. III0catioo of the lump-.um price .hall be
<br />subj.ct to the approval of the contrlcting officer,
<br />eod wh.n Ipprov.d'- .h.II become a part of the
<br />contract. In prep.ring monthly estimates for
<br />progr... payments consideration will be giv.n to the
<br />paraentag. of .ach m.jor division of work
<br />parform.d during the month for which such
<br />..timlte i. prepered.
<br />
<br />74. MAINTENANCE OF FLOW IN
<br />BESSEMER DITCH DURING
<br />CONSTRUCTION
<br />
<br />., G.neral,- The Bauem.r Oitch conv.y. wlter
<br />through the con.tructlon .it. II .hown on Drawing
<br />No, 4:1 1312.0.13&2), Th. contr.ctor .h.1I be
<br />respon.lble for m.lntlining the B....m.r Ditch .nd
<br />the flow th.rain II follows:
<br />
<br />(1) In the r.ach of ditch ext.nding from the
<br />t B"9Il' Croak Siphon locat.d in SE 1/4 sec 35, T t
<br />20 S, R 811 W to the dam until after October 16,
<br />11113, whan ri.ing r.servoir waters will prevent
<br />t such work. Th. contractor shall conduct his
<br />oparation. in the vicinity of the B....m.r Ditch
<br />upstraam from Bogg. Creek Siphon '0 as not to
<br />interfere with the operation and m.inten.nce of
<br />the ditch by the ditch company. t
<br />
<br />(21 In the reach 01 the ditch ext.nding from the
<br />dam to the upstream sid. 01 the n.w State
<br />
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