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City of Redwood City EXHIBIT "A" SCOPE OF WORK Scope Blomquist Street Extension 2.07 Prepare deed description and plat for ROW dedication. AP A will prepare plats and legal descriptions for ROW dedications, and easements for the proposed Blomquist Street extension. 2.08 Roadway alignment. Manna will prepare the Blomquist Road extension's horizontal and vertical alignments. The vertical alignment will be determined by the hydraulic reports, easement requirements, and other design issues in the project. 2.09 Roadway typical cross sections. :Manna will prepare roadway cross sections based on the geotechnical reports and final roadway grade elevations. 2.10 Roadway construction details. Manna will prepare plans showing roadway details and dimensions. 2.11 Roadway drainage plans and profiles. based on WRECO's drainage reports. Manna will prepare drainage plans and profiles 2.12 Roadway drainage details and quantities. Manna will prepare plans showing drainage details and estimate the quantities for roadway and drainage works. 2.13 Pump Station. Manna will prepare a bridge drainage report for the pump station. The general layout and operation of the pump station will be configured similar to the existing facility. 'This report -will address issues relating to the mechanical, structural and electrical disciplines affecting any decision to relocate and/or upgrade the pump station. 2.14 Box Culvert. Manna -will prepare a drainage report for a new box culvert at the junction of Maple and Blomquist. This design -will consider the effects of constructing a new box culvert on the hydraulics of the creek along Maple Street, and on the existing bridge access to the police station. This work will interface issues related to the structural design of the pump station, and its relocation. 2.15 Utility Plans. AP A -will survey existing utilities at both ends of the project and along the alignment. Alignment of the proposed extension will be based on the findings obtained from this analysis. AP A -will prepare plans of existing utilities. 2.16 HEC-RAS modeling and analysis. WRECO will perfonn hydraulic analysis using the U.S. ATIny Corps of Engineers' HEC-RAS computer program to analyze the flow characteristics at the proposed bridge site. Flow characteristics for the design of the bridge include the water surface elevations (depths) and flow velocities. This will be used to establish the minimum bridge soffit elevation and depths of bridge foundations. 2.1í Bridge scour analysis. WRECO will perform a bridge scour analysis in accordance with Federal Highway Adrrllnistration BEC-18 manual. The flow characteristics obtained from the BEC- RAS program will be used in the bridge scour analysis. The analysis -will determine the required depths for foundations and any need for scour protection measures. 11/06/00 MANNA CoNSULTANTS, INc 3