Brown and Caldwell, Inc. 4/11/2026 Amendment 1

Port Gardner Storage Facility West Marine View Drive Storm and Combined Sewer - Exhibit A Scope of Work 31 • City permit application(s), as needed. Task 1054.2 Cultural Resources Services during Construction Activities/Approach: Cultural Resources Services during Construction are being led by ESA and include the following: • Email Affected Tribes (i.e., Tulalip Tribe, Snoqualmie Tribe, Sauk-Suiattle Indian Tribe, Stillaguamish Tribe of Indians, Swinomish Tribe, and Suquamish Indian Tribe) and DAHP 7- 10 days prior to the beginning of construction providing notification of construction and invitation to observe construction. • Conduct archaeological monitoring of ground disturbing Project activities conducted deeper than 15 feet below ground surface in reclaimed areas. Archaeological monitoring procedures will adhere to the MIDP prepared for the project by ESA in August 2025. • Prepare a Monitoring Report that describes the archaeological monitoring that occurred for the project, including what (if any) cultural resources were found, and actions taken. The report will meet the current DAHP standards for cultural resource reporting. A Draft Report (Word format) will be submitted for review by the City of Everett, then one updated Draft Report (Word Format) for review by Ecology. The Final Report (PDF format) will be prepared once Draft Report comments are received from Ecology. • Upload the Final Report to DAHP’s WISAARD system, under the direction of Ecology. Assumptions: • Archaeological monitoring will adhere to the MIDP prepared for the project by ESA. • ESA assumes 100 days of archaeological monitoring. Each monitoring workday will total 10 hours (up to 8-hours on site and 2-hour round-trip travel between ESA’s Seattle office and the Project Site). • Multiple archaeological monitors may be required if ground disturbing construction activities occur simultaneously in different areas. • Tailgate orientations will occur on days during which archaeological monitoring is scheduled to occur. • ESA must receive all requests for monitoring at least 72 hours prior to the start of shift. • There is a 4-hour minimum charge for each work shift. • Cancellation of a scheduled work shift requires 24-hour notice. There will be a 4-hour charge for work cancellations that occur less than 24 hours prior to the start of shift. • Changes to the construction schedule, and/or delays due to availability of materials, or adverse weather, may require an amendment for additional monitoring time and expenses. • Discovery of an archaeological site will require additional identification work and agency coordination beyond the present scope to evaluate its significance and arrive at appropriate assessments of adverse effects. • If at any time human remains are encountered, work will cease, and notification of affected parties will proceed as directed by RCW 27.44. • ESA assumes no archaeological sites or isolates will be discovered. If sites or isolates are discovered an amendment will be required to document the resource. • ESA assumes that 30 weekly progress reports will be required, requiring up to 1 hour per progress reports. Deliverables: