Sacramento County is leading a lawsuit accusing state officials of holding illegal secret meetings about the controversial Delta tunnels project. The county, joined by the city of Stockton, several Delta water agencies and a group of environmental organizations, sued the State Water Resources Control Board on Tuesday. The suit claims officials with the state water board met privately and illegally as far back as 2015 with representatives of the California Department of Water Resources and U.S. Bureau of Reclamation, the lead agencies planning the tunnels.