U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.


Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Hedges Creek Copper Solution Release

Site Contact:
Randy Nattis
On Scene Coordinator


Site Location:
Tualatin, OR 97062

Report as of: 1245, 1 July 2021

Overview:  On Wednesday, June 30th, EPA was contacted by the Oregon Department of Environmental Quality (ODEQ) about the release of approximately 300 gallons of a material called CuSol-5 Solution into Hedges Creek in Tualatin, Oregon.  The material is cooper-based pesticide used for residential exterior wood preservation and it is toxic to aquatic organisms. The release occurred approximately 3 miles from where Hedges Creek feeds into the Tualatin River. About 300 to 500 feet of Hedges Creek appears to be heavily impacted with the product.

State, Local and other Federal Agency Actions:  The City of Tualatin hired a local cleanup contractor and with concurrence from Oregon DEQ, they have constructed a dam downstream of the visible impacts. Additionally, Oregon DEQ is coordinating with resource trustees including State Fish and Wildlife, Department of the Interior (DOI) and National Oceanic and Atmospheric Administration (NOAA).

EPA Actions: At this time, EPA has been asked by Oregon DEQ to provide technical assistance and sampling/analytical support.  OSC Randy Nattis is mobilizing to the incident along with START contractors to collect water and sediment samples and other assistance as needed.  OSC Nattis is also coordinating with the EPA Environmental Response Team (ERT) to provide technical assistance to the incident with respect to cleanup options.