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City of. Eugene Contract #2009 - 00220 <br />Exhib B - F. eCt Proposal , SCOpe of Work <br />Pagel of 4 <br />CONSUL TINC ENGINEERS FOR PA VEMENTS <br />PA VEMEN T SER VICES INC, <br />541 N.E. 20th AVENUE, SUITE 1 U7 <br />PORTLAND, OREGON 87232 -2862 <br />503.235.0377': FAX 503.235.2885 • <br />September 10, 2008 <br />Jenifer Willer, PE <br />Eugene Public Works Engineering <br />244 E Broadway - <br />Eugene, OR 9 74 1 <br />Re: Crest Neighborhood Street Improvements Project Pavement Design Proposal <br />Jenifer, <br />Thank you: for requesting this proposal to provide pavement deign recommendations' for the street <br />segments in the Crest Neighborhood, Street Improvements Project as listed :belo . <br />Table 1— Pro' ect Street Se menu <br />.Street <br />From. <br />, To.: <br />� Len th, ft.. <br />-Crest I]ri <br />Li St.. _ Blanton Ro <br />- ------ <br />; 5,2 <br />Crest Drive. "s uz <br />"lower /middle" C <br />Stored Blvd. <br />2 70 • <br />. <br />S tore y Blv <br />F riend ly Street <br />"u .er" Crest : Lorane Highway ��. <br />' Lorane 4jjAway W 28- Aven <br />2, <br />- .1 1 540 <br />Lprane Highway <br />50• east of Friendly St <br />50' west of Friendly St <br />10o <br />Totat. <br />%780 <br />The .segments lengths shown above were measured using Goggle Earth: <br />Project Background <br />Our understanding of - the general nature of the project and the work - that will be performed by others is <br />described as fo The streets are unimpr neighborhood streets that function like neighborhood <br />collectors. - regular heavy vehicle `traffic includes garbage trucks, possibly school buses and, on some <br />streets, transit bus: service that is limited to one or • two - morning and afternoon trips.- The existi <br />pavement is• • in- • poor condition and will be. reconstructed. The unproved streets .ill have an ultimate <br />paved width • of 1.8 . ft with generally flush •curbs for ' edge : support, although, vertical curbs may be used :in <br />_ some locations as necessary for- drainage control and/or sidewalks.'. Some widening may be' -required •t <br />achieve the 18 paved v%ridth. The streets currently have • discontinuous ditch •drainage. • that will be <br />replaced with storm drainage. The primary constraint on changing nging street-. grades is -the adverse, effect it <br />may have on the grade break between the street and sloping driveways. Hav`iever, the street grade can <br />probab be raised by 4• to 6 inches if cost - effective for pavement reconstruction. The City would. like to <br />evaluate several options - for pavement reconstruction including "conventional" asphalt concrete (AC) on <br />aggregate. base (AB),. -full- -depth AC, portland cement concrete (PCC) and in- place .recycling, <br />Our, work scope. includes• d evelopment: of - alternative designs for conventional AC, full - depth AC, and <br />PCC. - pavement sections and preliminary evaluation of the feasibility of in :place: recyclarig. Since it is <br />unclear at this time whether in :place recycling_ :.would be feasible and cost effective; . we have not included <br />the laboratory testing_ -and design analysis for this alternative in our scope of services. If the preliminary <br />_evaluation indicates that in place recycling does appear to be a viable option, then additional laboratory <br />testing and analysis under separate authorization would be necessary for final design. <br />