Treoil Industries cleanup site, Ferndale

The following documents are available at our Treoil Industries cleanup webpage:

• Remedial Investigation: The results of an environmental study showing the types and locations of contamination at the site.

• Feasibility Study: Explains the different cleanup options, called alternatives, including Ecology's preferred cleanup alternative.

• Public Participation Plan: Describes how Ecology will inform the community about the site activities and ways to become involved.​

We're also holding an in-person and virtual open house on April 2 to discuss this site.

Background

The Treoil Industries cleanup site is 3.5 acres of a larger property, used since the 1980s for different industrial operations. Over the years people left a large amount of dangerous wastes — toxic, corrosive, ignitable, or reactive substances — unsecured and often improperly stored.

Ecology reported the site to the EPA and requested federal help in 2017. The EPA did two emergency cleanups, which cost about $4.3 million. Now Ecology is dealing with the remaining contamination.

Investigations found the following contaminants were present in soil at levels that exceeded state standards:

• Total petroleum hydrocarbons (TPH)

• Pentachlorophenol, a semi-volatile organic compound (SVOCs)

• Metals (primarily chromium, copper, and lead).