2012/08/08 Council Agenda Packet

2 Exhibit A-1 Amendment No. 1 Detailed Design &Construction Support Services City of Everett SCOPE OF SERVICES SEWER "M" PROJECT, UP 3470 Sewer System Replacement and Capacity Improvements Jacobs Engineering Group July 2012 1. PROJECT UNDERSTANDING The City of Everett contracted with Jacobs for planning, design, and construction assistance services to provide for construction of buried pipelines and street improvements in a 30-block area, or 112 acres, roughly between 10th and 19th Streets and between Grand and Rockefeller Avenues. The neighborhood is single family residential and within the NW Everett Neighborhood. As a result of planning efforts, the project within the study area was phased in two parts. This amendment consists of detailed design and construction support services for Alternative E-3 Phase 1, as defined in Fig 4-8 of the Technical Memorandum, Task 200—Sewer System Hydraulic Modeling Analysis, prepared by Jacobs in May 2012. This figure is included as Exhibit D-1 of this Amendment. The Project will generally consist of: • • Modifications to its existing combined sewer(CS) system to include: o Installation of up to approximately 6000 LF of storm water(SW) separation from the combined sewer(CS)conveyance system connecting to the City's existing CSO overflow pipeline in the vicinity of Grand Avenue and 15th Street. o installation of new regulator structure that would provide a means for diverting most storm water flows to treatment, with higher flows passing to the outfall. • Replacement of approximately 8,300 LF of aging sewers and 190 side sewers; and, • Replacement or restoration of streets (including asphalt pavement, curb & gutter, and sidewalk) and alley restoration, as needed. July 2012 r6.0 Page 1 of 19 Jacobs Engineering Group 11