GeoEngineers 3/23/2026 Amendment 1

City of Everett | February 10, 2026 Page 2 File No. 0661-128-04 Scope of Services YEAR 8 QUALITIVATIVE SITE MONITORING ■Task 100 – Project Management and Coordination Coordination with the invasive species control contractor (Cascade Ecology). Communications of schedule and overall progress of the project. Contract administration including file setup, contract processing, monthly budget review, progress report and invoice preparation. ■Task 200 – Invasive Species Site Walkthrough Two GeoEngineers’ biologists will conduct a qualitative site walkthrough (two, 10-hour days) to identify and map invasive species locations and densities throughout the delineated wetland areas of the AMS. Data will include visual observations and global positioning system (GPS) data collection of invasive species points and patches. Observations of mudflat and marsh development, wildlife use, man-made debris accumulations or other conditions that could undermine achievement of performance standards, and previous invasive species control efforts will also be recorded. ■Task 300 – Invasive Species Work Plan GeoEngineers will prepare a workplan to prioritize invasive species management for the Year 8 growing season. The workplan will identify species and site locations of highest priority in order to target control efforts with a goal of maximizing performance standard achievement. The workplan, figure and invasive species location data will be provided to Cascade Ecology. This task will include up to two, 1-hour meetings with Cascade Ecology to review the work plan and support work plan implementation, as needed. ■Task 400 – Agency Coordination for Performance Standard Revisions Two AMS site performance standards have been identified for proposed revisions in order to remove instances of double counting invasive species occurrences. This task would include agency discussion and coordination for performance standard revisions, to be implemented prior to Year 10 formal monitoring. GeoEngineers will prepare a memorandum to document agency discussions and formally request revisions to site performance standards. Assumptions ■Invasive and noxious weed species are defined as those listed in the approved Advanced Mitigation Plan (AMP)2 performance standards. ■The invasive species site walkthrough and workplan will be limited to wetland areas of the AMS as delineated in the Year 7 Mitigation Monitoring Report (GeoEngineers 2025). 2 ICF International. 2019. Diking District 5, Smith Island Estuary Restoration Advance Mitigation Plan. Prepared for City of Everett Public Works Department on behalf of Diking District #5. September 2019.