Chevron, Ecology Department brief public on remaining Unocal cleanup activities

708
3
This aerial view, taken in the mid 1990s, shows the Unocal Bulk Fuel Terminal prior to cleanup.
This aerial view, taken in the mid 1990s, shows the Unocal Bulk Fuel Terminal prior to cleanup.

Officials from the Washington State Department of Ecology and Chevron Environmental Management Company (EMC) met with a crowd of more than 30 interested citizens in the Edmonds Library Plaza room on Thursday evening to provide information and answer questions about the ongoing clean-up activities at the former Unocal fuel terminal adjacent to the Edmonds Marsh and Marina Beach.

The fuel terminal operated between 1923 and 1991. It comprised a fuel dock extending out into Puget Sound, a lower yard where petroleum products were blended and processed, and an upper storage yard or tank farm.

The upper yard cleanup was completed and certified by the Ecology Department as suitable for residential use in 2003, which cleared the way for the Point Edwards development.

Department of Ecology Project Manager David South briefs the audience on the plan to clean up the remaining two problem areas.
Department of Ecology Project Manager David South briefs the audience on the plan to clean up the remaining two problem areas. (Photo by Larry Vogel)

Clean-up activities in the lower yard have been ongoing since 2001. While most of the area is now clean, according to Ecology two remaining areas of contamination remain: a storm water detention basin and a Washington State Department of Transportation storm drain. Test wells in these two locations reveal residual petroleum-contaminated soil and groundwater. Clean-up work will be conducted by Chevron EMC and monitored by DOE, and is scheduled to begin in June 2016.

This site map of the lower yard area shows the areas already remediated in green, and the two remaining areas to be addressed in orange.
This site map of the lower yard area shows the areas already remediated in green, and the two remaining areas to be addressed in orange.

Cleanup of the detention basin will be fairly straightforward, with the contaminated soil being excavated and sent off-site for disposal. This work is expected to be completed by September 2016.

Contaminants from the storm drain present a different and more complex problem, and will be cleaned on site by a dual-phase extraction system certified by the Ecology Department as meeting the National Pollutant Discharge Elimination System requirements of the Clean Water Act. This system will take approximately six months to install and is expected to operate for about six years.

Complete documents, including detailed work plans, are available for review at the Ecology Department’s Unocal Edmonds Bulk Fuel Terminal web page.

According to Ecology project manager David South, these actions will “complete the cleanup of the Unocal Edmonds Bulk Fuel Terminal site.”

The public comment period runs through Aug. 31. You can leave comments here.

View the PowerPoint presentation from the meeting here. My Edmonds News also videotaped the meeting, and that video will be posted on Friday.

— By Larry Vogel

3 COMMENTS

  1. Seems odd that Wash. Dept of Ecology is intending to approve a final clean-up plan that does not include any sediment testing in the Edmonds Marsh to confirm that Unocal operations did not adversely affect the Marsh. Also, it is surprising to me that Wash. Dept of Ecology would allow Chevron/Unocal to do its own monitoring rather than have an independent entity validate that the clean-up is adhering to State and federal standards.

  2. Joe – sorry I didn’t make this more clear in my article. The question about independent testing of samples was raised in the meeting, and according to Dave South, DOE Project Manager for this operation, Chevron EMS will be collecting the samples with DOE oversight, and the samples will be tested by independent testing labs. The soon-to-be posted video will include this exchange.

LEAVE A REPLY

Please enter your comment!
Please enter your name here