We invite your feedback on removing the environmental covenant from this site. Environmental covenants are put in place to protect human health and the environment when some contamination remains at a cleanup site. They limit the way a property may be used.
An environmental covenant was recorded for this site in 2013 because arsenic contamination was detected in groundwater after cleanup. In 2021, it's our opinion that the covenant is no longer required, and the owner requested it be removed from the property.
We invite you to review and comment on the following document:
Houses, a gas station, automobile sales and repair, welding, steel fabrication, and a pest control company were located at the Jefferson Ave site. The structures were removed in 2002.
After two underground storage tanks and a hydraulic hoist were removed, petroleum-contaminated soil and groundwater were detected above state cleanup levels. About 395 cubic yards of soil were removed and disposed of off the site. In 2003, monitoring wells were installed to determine if groundwater was contaminated.
In 2012, results showed soil contamination was below cleanup levels. But arsenic in groundwater was above the cleanup level in one well. Ecology issued a No Further Action (NFA) letter in 2014, requiring a covenant be filed for the small area of the site where the arsenic level was elevated.
Arsenic in groundwater was measured again in 2019–2020. The amount of arsenic had decreased over time, but remains slightly above the cleanup level in one well. The amount is low and it is below the state background level. Groundwater will not be used for drinking because the city supplies drinking water to the site.