The Gunderson site is located at River Mile 9 and comprises 67 acres along the banks of the Willamette River.
Sources of contamination from the site are various. First, an underground storage tank (UST) released trichloroethane (TCA) in 1980 and an active remediation system is in place for this contamination. Second, the site contains 11 USTs which hold petroleum and toluene and releases from these tanks has occurred at unknown times historically. The site also has contamination from both ship building and ship salvage operations on the property.
The primary hazardous substances found at the site include trichloroethane (TCA), PAHs, TPH, BTEX, waste solvents, PCBs, and metals.
Further source control options are being investigated at this time, particularly in the Marine Barge Assembly Area.
For more technical information provided by DEQ about the site, click here.
Other Upland Sites Administed by DEQ:
Doane Lake (Rhone-Poulenc)
Wacker Siltronic, Corp. (NW Natural Gas)
Willbridge Terminal (Multiple PRPs)