IMCO General Construction 5/9/2022

City of Everett,Washington I Water Filter Plant- Phase 2 Capital Upgrades PDB Project Progressive Design-Build Contract I Exhibit A. List of Reference Documents Exhibit A Water Filter Plant — Phase 2 Capital Upgrades Project City of Everett, Washington List of Reference Documents The Design-Builder shall review the Reference Documents to support its Phase 1 design with additional documents obtained or developed by the Design-Builder. Owner may also update the Reference Documents list from time to time with new information. All documents listed below will be provided via the Electronic Reference Library. Owner provides such Reference Documents to Design-Builder for information only, and subject to the conditions and qualifications identified in Section 3.2.1 of the General Conditions, except as expressly indicated below: • Reference Documents 1, 2, 3, 4, and 5, as numbered in the table below, may solely be relied on by the Design-Builder for: o Information regarding the current state of Water Filter Plant infrastructure and processes as identified during the 2020 Water Filter Plant Facilities Plan project. o An understanding of potential Water Filter Plant process changes and infrastructure improvements within the 20-year(2020-2040) planning horizon of the 2020 Water Filter Plant Facilities Plan. • Reference 6, 7, 8, 9, 10, and 11, as numbered in the table below, may solely be relied on by the Design-Builder for: o The general arrangement and location of site and project features. o Record drawings and shop drawings may be relied on for the location and type of inaccessible infrastructure. For clarity, only infrastructure that would require excavation, removal or breaking of structures, or removal of major equipment would be considered inaccessible. Observations that require removal of a hatch, cover, panel, or small piece of equipment would not be considered inaccessible. Field locatable underground pipes and utilities would not be considered inaccessible. • Reference Documents 12, 13, 14, 15, 16, and 17, as numbered in the table below, may solely be relied on by the Design-Builder for: o Information regarding subsurface conditions at the specified geotechnical investigation locations. o Geotechnical analysis and recommendations related to specified project criteria and subsurface investigation locations. • Reference Document 18, as numbered in the table below, may solely be relied on by the Design-Builder for: o Information regarding the general arrangement and location of underground pipes, conduits, vaults, and valves across the Water Filter Plant site. Page 1 of 4