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City of Everett rt , k Suter,Regulators$R4aadtS9 Mactifca <br /> BHC Services <br /> 1. Hydraulic Modeling: <br /> a. Evaluate variations on alternatives to previously defined modifications based on City's <br /> desire to not build the pipe augmentation on Chestnut and 26th St. One variation <br /> includes modeling R4's weir set at an elevation of 42 feet rather than 37.6 feet. <br /> b. Perform long term simulations to estimate CSO frequency. <br /> c. Define and verify design parameters for the modified regulator elements. <br /> d. Utilize sewer monitor data to calibrate or otherwise refine modeling accuracy. <br /> City of Everett Responsibilities <br /> 1. Furnish active flow monitoring to assist with modeling and calibration needs. <br /> Assumptions <br /> 1. Hydraulic analysis will be performed using long term simulations to estimate CSO <br /> overflow frequency and for design purposes. <br /> Deliverables <br /> 1. Once the final project configuration is determined, a summary Technical Memorandum <br /> (maximum of 5 pages of text, PDF file via email) detailing the results of the modeling <br /> done to support the project design. <br /> Task 3 — Geotechnical Investigation <br /> Objectives <br /> Geotechnical data will be needed at the new R4 structure. This will be a deep excavation <br /> (approximately 25 ft deep) that may also require dewatering if groundwater is encountered. The <br /> geotechnical investigation and report will be performed by HWA Geosciences (HWA) as a <br /> subconsultant to BHC. <br /> BHC Services <br /> 1. Coordinate with HWA and incorporate their recommendations into the design. <br /> 2. Perform a site visit with the geotechnical engineer to determine boring locations. <br /> 3. Review the draft geotechnical report and provide comments to HWA. <br /> HWA Geosciences Services <br /> 1. See attached scope of work and budget from HWA. <br /> City of Everett Responsibilities <br /> 1. Provide site access for the investigation. Obtain permission from WSDOT for borings in <br /> the WSDOT ROW. <br /> Assumptions <br /> 1. See assumptions in the attached scope of work from HWA. <br /> ■ <br /> Scope of Services 4 ®J ■ <br /> CONSULTANTS <br />