2011/09/07 Council Agenda Packet

c. Project: Sewer System Replacement"F"Project, Schedule B q Change Order No.2 Change Order Effective Date: July 27, 2011 Bid Item#087—Utility Conduit Crossings. Empty PVC utility conduit crossings were added to the streets that were being rebuilt with new cement concrete pavement. The streets of Bell&Snohomish Avenues, 34th Street to 35th Street,Tulalip Avenue from Niles Avenue to 35th Street and Niles Avenue from Tulalip Avenue to Laurel Drive are locations where the utility conduit crossings were installed. This was done in order to prevent future trenching and patching of new cement concrete pavement surfacing, should neighborhood residents want to change from overhead to underground power, telephone and cable services. The residents on 3400 block of Bell Avenue decided to do that and have coordinated with the City sewer project to install additional PVC conduit at their cost. Bid Item#088—Perforated Drain Pipe with Drain Rock. Perforated drain pipes with drain rock were added behind the back of sidewalk in many locations along Bell,Tulalip,Niles Avenues and along 34th Street, in order to capture the surface and ground water runoff. Schedule 4,work order 30024 (Justification Continued) Bid Item#082—Cement Concrete Pavement Alternate. The roadway of Tulalip Avenue from 331d street to 34th Street was added to the contract to construct cement concrete pavement alternate roadway section, in-lieu-of,the original anticipated patched concrete pavement approach. New schedule 5,new work order 30025 (Justification Continued) • Bid Item#002—Surveying. This bid item is being used to survey the existing street surfaces of upper and lower Laurel Drive at repeated stations in order to record the widths and elevations of said surfaces. This will allow them to be re-installed back to similar elevations and widths. Street widths on upper and lower Laurel Drive vary between 14' to 17' wide. Bid Item#003—Traffic Control Labor.This bid item is being used to pay for added labor for traffic control to complete the street restoration work of upper and lower Laurel Drive. Bid Item#004—Maintenance&Protection of Traffic Control. This bid item is being used to pay for the added maintenance &protection of traffic control signage involved in the street restoration work of upper and lower Laurel Drive. Bid Item#006—Sawcut Pavement,Up to 6-inch thickness. This bid item is being used to pay for the added saw cutting of pavement involved in the street restoration work of upper and lower Laurel Drive. Bid Item#054—Concrete Inlet. Two inlets are being added to new schedule 5, as part of the street restoration work on upper Laurel Drive, and an additional inlet on lower 33rd Street where in turns into Vernon Avenue,to help control surface water runoff. Bid Item#056—Storm Drain Pipe, 8-inch SDR 35 PVC. This storm drain pipe is being added to new schedule 5,part of the restoration work on upper Laurel Drive, to help control surface water runoff, and 90 linear feet location along the west side of Vernon Avenue to handle ground water runoff. Page6of8 45