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Exhibit A: Scope of Work, Amendment 1 <br />City of Everett Contract No. 156839 <br />Water Filtration Plant Portal 4 Improvements Design Contract Scope of Services <br />Everett Water Filtration Plant Portal 4 Improvements Design <br />Amendment 1 <br />Project Understanding <br />The City of Everett Water Filtration Plant (WFP) is located adjacent to Lake Chaplain approximately <br />16 miles east of Everett, WA. The WFP provides water for over 600,000 people, which is <br />approximately 75% of the population of Snohomish County. This critical piece of infrastructure <br />supports the water supply in the north Puget Sound area and its continued operation is vital for the <br />wellbeing of area residents and the economy of the City of Everett. The improvements included in <br />this project are as originally identified in the update WFP Facility Plan and CIP. The project <br />deliverables will include a Basis of Design Report and subsequent Construction Documents depicting <br />Portal 4 improvements that meets WAC 246-290. This scope of work has been updated through <br />Amendment 1 to include the addition of valves and vaults on transmission lines 2, 3, and 4, a <br />security fence around the Portal 4 structure, replacement of the single phase cable servicing Portal <br />4, and cost estimating conducted during basis of design. This updated scope of work extends the <br />existing Portal 4 Improvements design contract with Brown and Caldwell to include a cost estimate <br />completed in the basis of design phase, additional preliminary and intermediate design for CIP <br />additions, final design, subconsultant services for surveying, geotechnical work, and condition <br />inspection, bid period support, services during construction, additional project management, <br />additional quality control on added deliverables, and an allowance for unanticipated services. <br />Amendment 1 additions to the original scope of work are identified in this exhibit by underlined text. <br />Scope of Work Summary and Work Breakdown Structure <br />The Consultant scope of work for the Project includes 13 tasks, which are identified in the following <br />table. The table includes 4 new tasks to support the final stages of design and project construction. <br />Portal 4 Improvements Design Tasks <br />Task 101 <br />Task 102 <br />Task 200 <br />Task 300 <br />Task 400 <br />Task 450 <br />Task 500 <br />Task 601 <br />Task 602 <br />Project Management <br />Quality Assurance and Control <br />North Corridor Flow Controls Evaluation <br />Basis of Design <br />Preliminary and Intermediate Design <br />Isolation Valves and Security Fence Preliminary and Intermediate Design <br />Detailed Design <br />Geotechnical Services <br />Geotechnical Services During Construction <br />