Resolution
Project Web Access provides a utility for deleting enterprise projects from the Project Server database. Complete the steps below to delete an enterprise project and all of its associated Risks, Issues, and Documents:
1. Log into to Project Web Access with administrator permissions
2. Click Admin - Clean up Project Server database
3. Select the Projects and To-do Lists option
4. Select the Delete the SharePoint team Web site for the specified project option
5. Select the project you wish to delete in the data grid
6. Click the Delete button
Warning: There is no undo process to reverse the deletion of a project. The only way to retrieve a deleted project is to restore your Project Server database from the latest backup.
Note: To perform a mass deletion of projects or resources in Project Server 2003 only, download and use the Project Server Cleaner tool, available at the following link:
Download Project Server Cleaner Tool