LATHROP – The ambitious Richland Planned Communities envisioned in the area west of Interstate 5 between Mossdale Landing and Klo Road may be gone for good. But not some of the things that were set in place in anticipation of the major development project that went bust with the last Great Recession.The Central Lathrop Specific Plan, which is what this development area is called, remains awaiting the next great building project to pick up where Richland left off.Lathrop High School, built before a single shovel of dirt was turned in what was going to be Richland Communities, is the single completed project to come out of this development area.But there’s another property of the Manteca Unified School District that will be there when development resumes in this part of west Lathrop. It’s a K-8 school site that has been named Ethel Allen Elementary in honor of one of Lathrop’s earliest principals.