Government Contract | Oregon
River Island North Restoration Project

Bid Information

Bid Alert No: 00000455120

Bid Title: River Island North Restoration Project

Agency Bid No. Title: RFB 3105

Received Date: 01/08/2016

Close Date: 02/10/2016

Purchase Type: Not Stated

Delivery Point:

Delivery Date: Not Stated

Special Notices: Pre-Bid Conference Mandatory 01/20/2016 11:00 AM


Specifications include, but are not limited to:Project introduction:The River Island Natural Area site occupies an old gravel mining area. Mining at the site began in 1963 andcontinued though the 1990s. Mining ceased in 1996, when a catastrophic flood caused the Clackamas to avulseand flow through the active gravel mining operation and flood mine pits. Reclamation and cleanup activitiescontinued until 1999 when Parker-Northwest Paving began the process of selling the property to Metro. Today,the River Island reach of the Clackamas River can be described as a moderate gradient (0.4%) semi-confinedchannel. The river flows year round. The typical plan form in the study area is a single-threaded channel, withpoint and mid-channel gravel bars. The channel exhibits primarily riffle-pool morphology, with occasional glides.Substrate ranges from boulders to silts, but is predominately gravels and cobbles. The Clackamas River providesspawning and rearing habitat for the following ESA listed species: spring Chinook, fall Chinook, coho salmon, andwinter steelhead. Streambanks vary from artificially armored by asphalt to rapidly eroding silts. The areasfunctions, including hydrologic, geomorphic, and biologic, are degraded due to the rapid incision related to the1996 avulsion. The project area is currently in the 100-year floodplain, but excavating habitat areas and removingartificial fill in the floodplain are expected to have no to negligible impacts to the 100-year flood elevation.Metro and a number of other groups have identified the lower Clackamas in general, and River Island inparticular, as priority restoration areas (e.g., ODFW 2010Restoration at River Island offers the opportunity toimprove the sites stream, floodplain, and upland habitat to benefit fish, wildlife and water quality. Specific projectlocations were selected based on geomorphic and hydraulic evaluations, as well as a one-year long process withthe public and a technical review team.

Bid Related Documents

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Product Codes: 98815, 98826, 96273, 92640

Agency Information

Issuing Agency: Metro

State: Oregon

Agency Type: State and Local

Contact: Metro Main Office, 600 NE Grand Ave., Portland, Oregon, 97232



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