The U.S. Environmental Protection Agency will finally release a mammoth plan to clean up the Portland Harbor Superfund site on Wednesday, June 8.

Delayed several times, the proposed cleanup plan's release will trigger a 60-day public comment period that is required before the EPA can release a final plan, called a Record of Decision. It hopes to do that by December, before a new president takes office.

Public comments will be accepted from June 9 to August 8.

EPA Regional Administrator Dennis McLerran and Regional Superfund Remedial Cleanup Program Manager Cami Grandinetti will discuss the cleanup plan with local media on Wednesday, the agency announced Friday.

The Portland Harbor is considered perhaps the most complex Superfund cleanup in the history of the program.

Costs, expected to top $1 billion, will be borne by public and private entities that played a role in polluting the Willamette River sediment with toxic discharges, most of it many decades ago.

Steve Law can be reached at 503-546-5139; This email address is being protected from spambots. You need JavaScript enabled to view it. .

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