ODOT treats all stormwater that runs off construction sites and facilities such as roads. In the past, dedicated stormwater treatment was constructed for each project. For this project, the capacity of an existing facility will be expanded and will be retrofitted to use best practices in water quality treatment. The design will reduce maintenance costs and allow enough capacity to treat water from several projects by creating a regional stormwater treatment facility. The cost-efficient and environmentally friendly facility will be a model for ODOT projects in the future.