When is DEQ's file closed for cleanups that have been certified?

The file for cleanups that have been certified by the Department of Environmental Quality (DEQ) is officially closed after DEQ sends a letter to the homeowner. This letter is a crucial part of the process, as it signifies that all necessary evaluations and certifications have been completed regarding the cleanup. It serves as formal communication to the homeowner, informing them that the DEQ considers the cleanup efforts satisfactory and that no further action is needed from their end. This step ensures that all parties involved are aware of the status of the cleanup project and helps in maintaining clear records of the cleanup process.