Agenda - Council - 03/10/2009 - Laserfiche WebLink

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The street.$ sch4duled for maintenance are illustrated in Appendix C, the Preliminary Asscssmc:nt Role. This appendix also contains a listing of the parcels receiving benefit and makes note of the number of sharers being assessed if different titan a sirig,le share, All streets proposed for the program have received a preliminary survey by tho City Engineer and Public Works Supervisor. A post winter survey will be conducted prior, to awarding; bids in June. Appropriate project adjustments will be made if any of the scheduled projects are deemed to be inappropriate for scalcoating due to advanced deterioration, PROJECT QUANTiTIEIS AND COSTS Table l includes a listing of street lengths and pavement areas for each crackseal / sealcoat project. Estimates are also provided for crack tilling material application. rates. Table 2 contains the estimated construction costs for each of these sealcoat projects, Both the sealcoating and crack killing operation will be applied by a contractor selected through the competitive bidding process. Bituminous overlay projects consist caf applying one and one -hall" inch bituminous overlays onto the e;,isting pavement, Tables 3 and 4 proscnt summaries of the project quantities and Qonstructio.n costs, respectively. Prior to they overlay, failed areas will be removed and patched by the City's Public; Works Department, The number of tons required for street patching is estimated on an individual project basis, The rate charged for patching will be $200 per ton of bituminous material which includes material and labor; The existing pavement will be tack coated and a mat hive laid one and one-half inch overlay will be placed by a contractor se.lc;ctcd through the competitive bidding process. Existing driveways will have the adjoining street milled to form a neat joint with the newly overlaid pavement. On streets without curbs, the edge of the overlay street will be shouldered to eliminate the drop off at the.pavement edge formed by the overlay. The shouldering will be done around corners, bends and intersection radii using class.2 shouldering aggregate. The major portion of shouldering on the remainder of the overlays will utilize topsoil which will be seeded, mulched and disc anchored. FINANCING In addition to construction cost, overhead charge's of twenty -Evc percent (25%) will be applied to cover the following service s: Engineering and Inspection 10% City Staff Administration 5% Bonding and Legal 2% Contingencies 8 % The overhead pe.rcentago on the nonassessable project, 1P 09 -01, will be 17% since there is no bonding fees, and contingencies and staff administration time is reduced because of the relatively good condition on these newer pavements. —158—