The Norwalk-based developer, Spinnaker Real Estate Partners, announced the plan to finally get started building Thursday evening at a virtual outreach meeting for small contractors. The project, called “Square 10,” encompasses the blocks bounded by George, State, MLK, and Orange, where the New Haven Coliseum once stood. Spinnaker is beginning its bid process for local contractors interested in civil/site work, ground improvements, and cast-in-place concrete disciplines. At the virtual meeting Thursday night, Spinnaker Assistant Project Manager Kevin Paucar walked a group of 15 participants through the project’s new document control system, known as IngeniousIO. The system will allow contractors to review the project’s workforce requirements, project description, and insurance requirements documents for phase one and submit a request for proposal (RFP). Bidding is scheduled to remain open until Feb. 24.