Background
The Port signed an intergovernmental agreement (IGA) with the City of Portland's Bureau of Environmental Services (BES) to fund or cost-share work aimed at revegetating portions of the Columbia Slough owned by the Port.

The main objective of this project is to enhance vegetation communities along the banks of the slough in order to:

• provide shading to reduce surface water temperature
• provide diversity in vegetation for food and shelter for wildlife
• establish connectivity between open and natural spaces

Status
A total of 73.5 acres have been placed into the revegetation program. The BES will have met their obligations for ground preparation, planting, post-planting maintenance and monitoring activities on all sites by 2008. All sites have met the established target rate of 50 percent survival (including desirable recruits) as the performance standard for trees, 40 percent for shrubs and an introduction of native species into the herbaceous layer. Projects include:

• Columbia Grain- from the mouth of the Columbia Slough to the Union Pacific railroad on the south side (3 acres)
• Kelley Point Park- from the park boundary to the road bridge between the waterline and top of bank (3.5 acres)
• PIC- 82nd east to Interstate 205 from the waterline to top of bank and from top of bank to the edge of 50' Transition Zone (5.3 acres)
• Buffalo Street Mitigation Site from waterline to top of bank. (2.3 acres)
• Elrod Road Mitigation Site from waterline to top of bank (1 acre)
• West of 47th Avenue - AMC Site from waterline to top of bank (1.25 acres)
• Port 6440 Bldg.- from waterline to top of bank and 50' E-zone (3.7 acres)
• Cornfoot Road- tree planting only (4.3 acres)
• N. Marine Drive Overpass Abutment- from base of slope to top of bank (6 acres)
• Alderwood Slough near 82nd and Alderwood (1.7 acres)
• Alderwood wetland at 82nd and Alderwood Road (1.5 acres)
• North bank of Columbia Slough by Leadbetter (30 acres)
• 40-mile Loop Trail rail bridge to end (5274 feet)
• Rivergate bridges banks, maintenance
• Bonneville Pond west, maintenance