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Removal of creosote-treated pilings in Puget Sound. Photo courtesy of the Washington State Department of Natural Resources.

Removal of creosote-treated pilings may assist herring recovery

Thousands of abandoned wood pilings — the ghosts of piers and docks past — are located throughout Puget Sound. Most of them are treated with creosote, a toxic chemical used to preserve wood that contains polycyclic aromatic hydrocarbons (PAHs), a class of chemicals that are also associated with oil spills and burning of fossil fuels. …