The lot on the northeast corner of 12th & Jefferson has been vacant for almost 40 years. But a hundred years ago it contained a house. And in 1926 it was turned into a gas station that operated up until the 1950s.
Now that automotive history is threatening an affordable apartment project that has been planned for the corner by Capitol Hill Housing. An initial environmental evaluation verified the property's history back in January, and soil samples taken in September found "significant petroleum contamination" on the property:
- Gasoline: 400 times the state cleanup standards
- Benzene: 500 times the state cleanup standards
- Xylenes: 2.5 times the state cleanup standards
The worse news? The contamination went down to the bottom of the test holes at 18 feet, while ground water runs as high as 15 feet, indicating that the contamination may have already migrated off site.
Capitol Hill Housing has received one estimate that it may take more than a million dollars to clean the site up, which would include digging a big hole and finding a remote location to store the contaminated soil. That's far more than is affordable to their budget for the project, so they're working with a variety of public agencies to find funding for the cleanup. So far, King County has come up with $215,000 from an EPA program, and more funds are being sought.
If the cleanup money isn't raised, the property will stay in the hands of its current owner: the city of Seattle. And it will likely remain a vacant brownfield for many many more years.
Previously: CD Faces Pollution from Gas Stations & Cleaners