Attachment_4_-_SE_Quadrant_Full_Setback_Concept.pdf

This is a conceptual design document for the Southeast Quadrant of the Setback Levee Projects located at 1428 - 128th Street E in Pierce County, Washington, prepared as a supporting exhibit for the architecture and engineering services solicitation. The document presents the full setback concept for the Southeast Quadrant, which represents one component of the broader three-quadrant levee project (Northeast, Southwest, and Northwest Quadrants also included in the scope). The selected consulting engineering firm will be responsible for integrating this and similar conceptual designs into complete preliminary and final PS&E deliverables at 15, 30, 60, 90, and 100% completion levels. Qualifications were due November 25, 2026, and the consultant's initial task involves reviewing all three quadrants to develop an overall design and delivery strategy before proceeding with detailed engineering design phases.

The Southeast Quadrant Full Setback Concept document serves as the technical baseline and design reference for one of the project's quadrant-specific design considerations. This attachment, along with the May 2023 feasibility study (Exhibit B), provides the consultant with established parameters and conceptual direction to guide the preparation of comprehensive PS&E designs. Compensation will be structured through unit-of-measure, milestone-based, or labor-based rates as established in Exhibit B of the Professional Services Agreement, with annual budget adjustments limited to Seattle-Tacoma-Bellevue Consumer Price Index changes capped at 5%. The contract framework includes required insurance coverage of $1,000,000 per occurrence for commercial general liability and professional liability, $2,000,000 cyber liability, and applicable technology professional liability coverage.