900199 Ph 2 Plans 2.pdf

This file contains Phase 2 construction plans for the Amazon Prairie Mitigation Bank project in Oregon. The plans provide detailed technical documentation and design specifications for the wetland habitat restoration and construction work outlined in the 2026 ITB 10 contract opportunity. The project encompasses general excavation and grading work, implementation of 3D machine grade control systems, construction of shallow pools, embankment berms and spillways, installation of storm pipes, placement of coir and wood logs for habitat enhancement, and construction of specialized structures including flashboard risers, headwalls, and fish screens. The plans include provisions for permanent stabilization of disturbed areas and protection protocols for sensitive sites, including documented archaeological locations. The technical documentation establishes the engineering standards and construction methodologies required for completion of Phase 2 work.

The plans serve as the primary construction reference documents for bidders responding to the 2026 ITB 10 solicitation and establish the basis for cost estimation, scheduling, and resource allocation. Contractors must demonstrate capability in working within sensitive wetland environments while maintaining compliance with the specified grading accuracy, structural requirements, and environmental protection measures outlined in the design documentation. The plans detail the sequencing and coordination of multiple construction elements necessary to achieve the mitigation bank's ecological restoration objectives while protecting archaeological and other sensitive resources on the project site.