Excerpt:

Readers have been checking in to inquire about these signs that recently went up along a fenced-off area on Alameda Point. Turns out the Navy has begun its cleanup of Seaplane Lagoon.

The cleanup effort, which began on January 22, will involve dredging some 79,000 cubic yards of soil from 10 acres in the northeast and northwest corners of the lagoon. The soil will then be left out to dry and then disposed of. Wastewater will be treated on-site and then used to tamp down dust caused by the cleanup effort, put back into the lagoon or taken off-site. The cleanup is expected to take a year.