CleanTech Manufacturing Center is a planned development in Downtown Los Angeles.  The 19-acre tract on which the green industrial belt would be built was just acquired from the state of California for $14 million. Originally owned by Crown Coach, a builder of school buses, the land was supposed to be a site for a state prison, which was never built because of community protests. Thoroughly cleansed of toxics, it is now ready to receive one or more anchor tenants.  The property once laced with toxic contaminants is where city officials hope to build Los Angeles’ future epicenter of clean technology and green jobs.