The plan would address issues such as habitat conservation and restoration, bank treatment, landscaping and stormwater management for the land along the Willamette River, according to the City of Portland Bureau of Planning and Sustainability website.
The company said it has implemented a four-day work week at its marine barge operation.
Greenbrier, however, said that the work schedule of the nearly 300 workers dedicated to Gunderson's rail operations is unaffected by the decision.
Gunderson, located at a deepwater facility on the Willamette River for over 70 years, manufactures railcars and marine barges. (Reuters)