2011/10/05 Council Agenda Packet

1 Exhibit A City of Everett SCOPE OF SERVICES SEWER "M" PROJECT, UP 3470 Sewer System Replacement and Capacity Improvements Jacobs Engineering Group September 2011 1. PROJECT UNDERSTANDING The City of Everett desires 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 in the area as shown on Exhibit A-1. The neighborhood is single family residential and within the NW Everett Neighborhood. The Project will generally consist of: • Modifications to its existing combined sewer(CS) system, as necessary to reduce the frequency of basement flooding in the vicinity of Colby, Hoyt and 15th St. described in the Otak, Inc. report entitled North Everett Combined Sewer Evaluation (Basin D) —Post June 9, 2010 Event, February 2011, (issued in March 2011). General improvements to be considered for implementation include: o New stormwater collection points at approximately 15 intersections. o . Installation of approximately 7,000 LF of storm drain (SD) separation from the combined sewer (CS) conveyance system connecting to the City's existing overflow pipeline in the vicinity of Grand Avenue and 15th Street. o A means for routing first-flush, low-flow storm water to treatment, with higher flows passing to the outfall. • Replacement of approximately 12,120 LF of aging sewers and 500 side sewers, as needed; and, • Replacement of streets (including asphalt pavement, curb & gutter, and sidewalk) and alley improvements, as needed. 2. ASSUMPTIONS This scope of work is based on the following assumptions: a. This project is broken into three phases: • Phase 1 Preliminary Engineering • Phase 2 Detailed Design • Phase 3 Construction Assistance September 2011, r3.0 Page 1 of 10 Jacobs Engineering Group Inc. • 13