Brown and Caldwell Inc. 3/9/2022 Amendment 1

• Review available design, construction, and operational information about the structure. • Visit the WFP to perform inspection and assessment of concrete and embedded steel members within Portal 4. Site visit activities include the followingj o Probe deteriorated areas of concrete surfaces and measured for cement paste loss and pH measurements will be taken as appropriate. o Collect concrete powder samples for subsequent laboratory analysis, as warranted by the above inspection and testing. o Measure corroded steel components to determine thickness loss using calipers. Corrosion deposits will be scraped from corroded areas for subsequent compositional analysis. • Analyze corrosion deposit and powder samples Corrosion Probe's affiliate, Corrosion Testing Laboratories. • Prepare and submit a formal, written report describing the site work performed and the associated field and laboratory analysis results, including recommendations for rehabilitation or replacement. • Prepare recommendations, specification language, and drawing details for rehabilitation and replacement of concrete, embedded steel components, and protective coatings. Everett Responsibilities • Provide site access, staffing, and resources to support field work conducted by inspection crews. Task Assumptions • Site work will be performed by one CPI engineer/consultant and is anticipated to take one full day. • Site work will not involve confined space entry or contact with the plant water. • All surfaces to be inspected will be within reach of walkways and platforms. • Access to elevated areas will require use of a ladder (supplied by plant staff). • Corrosion deposit and concrete powder sampling will be performed so as to minimize contamination of the plant water. • Laboratory fees include analysis of two corrosion deposit samples and three concrete powder samples. Meetings • 1 hour kick off meeting between BC, CPI, and the City to discuss site visit logistics. • One site visit by subconsultant. Work Products • Summary of work and recommendations report from CPI. Task 700 Services During Bid and Construction Activities/Approach: Provide support to the City during the bid period. • Attend pre-bid meeting and prepare agenda, attendance list, and meeting minutes. • Address questions from potential bidders. • Preparation of Bid Addenda to answer Bidder questions and provide edits, changes, or clarifications to bid documents. • Preparation of conformed documents to incorporate all bid addenda items. • One electronic deliverable (PDF) set of design documents will be provided for the Conformed Documents. No hard copy prints are included as part of this scope. • Review project submittals during construction. Page 12 of 13