Supporters of an anti-tunnel referendum submitted 28,928 signatures to the Seattle City Clerk’s office Tuesday morning, trying to ensure the measure advances to a public vote.

From our news partners at the Seattle Times: 

The referendum needs 16,503 valid signatures to qualify for the Seattle ballot. City Clerk Monica Martinez Simmons accepted the referendum petitions at 10 a.m. in her City Hall office.  King County Elections will verify the signatures.  Verification is expected to take at least two weeks. Meanwhile, the ordinance it is designed to put to a vote — involving agreements between the city and state to proceed on the deep-bore tunnel — is scheduled to take effect Wednesday.  That means legal action to block the referendum could come as early as Tuesday.

For more information on the tunnel opposition effort, check out the group Seattle Citizens Against the Tunnel, headed up by Magnolia resident Elizabeth Campbell.