Inspection and testing of secondary containment liners at terminal observed

Photo of repairs by Nelli Vanderburg.
Photo by Nelli Vanderburg.

On July 10, staffer Nelli Vanderburg visited the terminal to observe an inspection and repairs to drainage piping under the secondary containment liner. These pipes drain water from the secondary containment area after a rain. A manhole was also being installed.

While the pipes were being repaired, Alyeska took the opportunity to inspect and test the secondary containment liner. The liner is made of “catalytically blown asphalt,” or asphalt that has been blown into place, as opposed to poured. In the photo below, a section of the flexible liner is being cut. The cut section will be tested for permeability. The last inspection and testing of these liners was in 1992.

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