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MSA <br /> EXHIBIT A <br /> Scope of Work <br /> North Creek Flow Augmentation Phase 3 <br /> City of Everett, Washington <br /> February 2008 <br /> Project Background and Understanding <br /> Murray, Smith&Associates,Inc. (MSA) has developed the following scope of work and <br /> accompanying engineering fee estimate(Exhibit B) for engineering services for the City of <br /> Everett North Creek Flow Augmentation, Phase 3 project. The scope of work and estimate <br /> of engineering fees have been developed based on our discussions with City staff and our <br /> understanding of the project. <br /> The City of Everett is engaged in a program that will augment the flow in North Creek <br /> during periods of low stream flow with groundwater from shallow wells. The project <br /> includes the withdrawal of groundwater and an air injection system to increase the dissolved <br /> oxygen content prior to discharge to the stream. Phase 1, the 124th Street site, consisted of a <br /> well that augments stream flow at a rate of 60 GPM. Phase 2, the 112th Street site, included <br /> development of an additional well that produces 300 GPM for flow augmentation. <br /> The objective of this project is to design and construct improvements to implement Phase 3 <br /> of the flow augmentation project; development of an existing well, air injection system and <br /> discharge to North Creek at the 7th Avenue SE project site. The well tested at 410 gpm. The <br /> site is located on a City owned property, adjacent North Creek East Fork No. 2, on the corner <br /> of 106th Place SE and 7th Avenue SE, and that is shared with a detention pond. <br /> The development of the flow augmentation system for this site will be similar to the system <br /> provided at the 112th Street site. The following is a list of the general improvements planned <br /> for this project. <br /> • Production well pump, piping, well discharge meter, an aeration system(Venturi <br /> injector), stream level monitoring instrumentation, and production well water quality <br /> monitoring structures (DO/temperature measurement) similar to the existing 112th <br /> Street site. <br /> • A stream return system that will utilize the existing storm water piping from the <br /> detention facility or other existing features at the site without disruption to the creek. <br /> • Electrical power supply, distribution, instrumentation and controls as detailed in the <br /> 1 ; attached scope from Tetra Tech/KCM (formerly ECS). PLC programming and the <br /> telemetry connection will be provided by the City. <br /> City of Everett MURRAY,SMITH&ASSOCIATES,INC. North Creek <br /> February 11,2008 Engineers/Planners Page 1 <br />