The Silicon Valley-backed group, California Forever, has unveiled its latest proposal, a massive Suisun City Expansion Plan that calls for annexing more than 20,000 acres east of the current city boundaries. … The Solano County Economic Development Corporation has voiced support for the project, saying it could strengthen Suisun City’s financial future. However, groups like the Greenbelt Alliance have raised concerns. … Some of those community concerns include environmental impacts, the additional water supply needed, and the potential loss of farmland.