Friday, July 25, 2014

Cleaning Up: Cleanup work starts Monday at Carty Lake in Ridgefield National Wildlife Refuge

By Diana Smith, public involvement coordinator, Toxics Cleanup Program

On July 28, the Port of Ridgefield (port) will start cleanup work at the Carty Lake part of the Pacific Wood Treating (PWT) site. PWT treated wood products on the site from 1964 – 1993. PWT went bankrupt in 1993, leaving behind contamination on and off port property.

The port’s contractor will start work by closing areas and moving equipment to the site. Work will continue through October.

Cleanup will focus on the south end of Carty Lake. The port’s contractor will build a small, temporary dam at the end of the lake; dig up and dispose of contaminated sediments; and restore the area with native plants.

Cleanup during railroad overpass construction continues

In June, the port began digging up and collecting dioxin-contaminated soil from the overpass area. The port will cover the soil with a geotextile liner, two feet of clean soil, and later the new section of Pioneer Street.

Lake River cleanup

The port will start prep work for Lake River cleanup in early September.

Cleaning up PWT’s legacy of contamination

From 1996 – 2013, the port cleaned up PWT contamination on port property. In 2013, Ecology and the port entered into a legal agreement for the port to clean up other areas with PWT contamination. Ecology and the port are funding the cleanup.

Stormwater from PWT carried pollutants into Carty Lake, which is in the Ridgefield National Wildlife Refuge, and Lake River. Sediments in Carty Lake, especially in the south end, are contaminated with pentachlorophenol (PCP), dioxins, and toxic metals.

Sediments in Lake River near port property are contaminated with PCP, cresols, dioxins, and polycyclic aromatic hydrocarbons (PAHs).


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