Brown and Caldwell, Inc. 9/27/2023 Amendment 1

Amendment 1 PSA with Brown and Caldwell for Port Gardner Storage Facility Project Exhibit A Scope of Work 18 Task 413 – Survey (1 Alliance) Objective: Perform surveying services to support the design of the PGSF. The area will be limited to the ROW to the east of the PGSF site that was not previously surveyed. Activities/Approach: This task includes the following activities: • Perform topographic field survey of the ROW directly to the east of the KC property and north parking lot. Survey shall include but is not limited to the following: Identify existing utilities, improvements, man-made features, roadways, boundaries, critical elevations, existing structures, natural features, and grades within the limits of work. The field survey shall include enough detail to produce a base map with boundary information, contours, and other topographic information. • Update previous survey along south property line. Port improvements included new Ecology block wall and fencing. • Update previous survey along west property line. Port improvements included new fencing. • South gravity thickener tanks diameter and wall height, launder dimensions, high point and low point floor elevations. • Railroad tracks east of existing Chemical Building. • Establish horizontal and vertical control points based on the Project’s control system and information for contract documents including survey points, a basis of bearing, benchmarks for vertical control, and datum information for development of base mapping. • Provide pothole surveys to identify the location and crown elevation of existing buried piping. Task Assumptions • Contractor is responsible for setting up their own survey control during construction and may incorporate Owner provided benchmarks. • Survey work products will be provided in a digital format. • North American Vertical Datum of 1988 (NAVD 88) will serve as the standard project datum. • All confined space entry plans, permits, and equipment are the responsibility of BC and the subconsultants. Everett Responsibilities • Provide the necessary staffing and resources to support field work. Meetings • Two site visits. Work Products • Digital drawing files with surveyor’s sign and seal. Electronic deliverables to include 2D base map (if combined with the previous survey file, distinguish new survey items or limits of new survey) and 3D surface DRM of the ROW directly east of the KC site and north parking lot, and combined 3D surface TIN of previous ground plus additional ground to east and updated south property limits as one surface. Task 414 – Corrosion Probe Objective: Provide ongoing support to BC design team regarding preparation of high-performance coating specifications, existing handrail rehabilitation, and existing structure repairs and renovations.