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With speeches and ceremonial shovels, construction began Wednesday at the site of a closed naval air station on what will be Alameda’s first major market-rate multifamily development in four decades.

But amid the pomp, some officials expressed concern about the site. Tetra Tech EC Inc., a U.S. Navy contractor accused of falsifying or fraudulently manipulating data during the cleanup of San Francisco’s former Hunters Point Shipyard, was also the contractor at the Alameda base.

Two former Tetra Tech supervisors pleaded guilty to swapping clean soil samples for potentially toxic ones at Hunters Point — a project that is to include more than 10,500 housing units, millions of square feet of office space, schools, a hotel and 300 acres of open space in San Francisco. Each was sentenced to eight months in prison.

Fallout from the cleanup scandal continues. Terry Seward, chief of the groundwater protection division of the Bay Area’s water quality control board, said he will send a letter Thursday to every active landfill in the region, asking that they go through their records to see if any received material from Hunters Point between January 2006 and December 2015, a period during which they fear radioactive or toxic soil from the San Francisco site could have been trucked to area dumps.