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5 <br /> Exhibit A <br /> GEOENGINEERS� <br /> 600 Dupont Street <br /> Bellingham,Washington 98225 <br /> 360.647.1510 <br /> March 12, 2012 <br /> City of Everett <br /> 3200 Cedar Street <br /> Everett,Washington 98201 <br /> Attention:Grant Moen, PE <br /> Subject: Scope of Services and Fee Estimate <br /> Stream Engineering Services <br /> Powder Mill Gulch Tributary Stream Stabilization Design <br /> Everett,Washington <br /> File No. 0661-086-02 <br /> GeoEngineers, Inc (GeoEngineers) is pleased to present our scope of services and fee estimate for <br /> stream engineering services to develop a stream and bank stability solution along a tributary of Powder <br /> Mill Gulch extending downstream from an arch culvert located beneath 25th Avenue West in the City of <br /> Everett. We previously provided geotechnical recommendations to the City of Everett(City)for immediate <br /> maintenance measures at the downstream face of the 25-foot wide CMP arch culvert beneath <br /> 25th Avenue West to prevent channel incision from undermining the culvert foundation and roadway <br /> embankment which was constructed in January 2011. We subsequently also provided geotechnical <br /> analysis of bank stability, geomorphic evaluation of stream conditions, and subsurface explorations as a <br /> basis for recommending interim measures to reduce the rate of bank retreat and channel incision. This <br /> proposed new phase of work is for an approximately 600 foot long section of the tributary of Powder Mill <br /> Gulch extending downstream from the 25th Avenue West arch culvert(the "project reach"). <br /> As a follow-up to these prior phases of work,the City has requested that GeoEngineers prepare this scope <br /> of services (SOS) for stream engineering services related to stream and bank stabilization measures in <br /> the project reach. This SOS is based upon a site meeting in February 2012, direction from the City, prior <br /> phases of this project, and experience with similar stream stabilization projects. This SOS was developed <br /> to facilitate construction of stream and bank stabilization measures in the summer and fall of 2012 by <br /> the City or a selected contractor. <br /> Within the recent past (approximately 5 years), the streamflow has eroded into a deposit of Esperance <br /> sand (Vashon-age advance outwash). The Esperance sand is composed of dense fine to medium sand <br /> that is a highly erodible by hydraulic forces. Erosion into the Esperance sand deposit has caused the <br /> stream channel to incise 20- to 30-feet deep in places and resulted in bank instabilities. The project <br /> reach is identified as non-fish bearing habitat. The following SOS provides details for each of these tasks <br /> regarding our assumptions, deliverables,schedule,and budget. <br /> 32 <br />