As a precautionary response to COVID-19, Ohio EPA is currently operating with most staff working remotely. If you are working with our staff on a current project and you know the name of the employee you are working with, email them at or call them directly. The Agency website has contact information for every district, division, and office. In order to reach us, please contact Ohio EPA’s main phone line at (614) 644-3020 or the main line for the division or office you are trying to reach.

After March 23, our district offices and Central Office will be temporarily closed and will have increasingly limited ability to receive deliveries, plans, etc. All entities are encouraged to submit plans, permit applications, etc., electronically where there are existing avenues to do so, such as the eBusiness Center (eBiz). Please refer to the list of available services on the main eBiz webpage. We encourage you to make use of all that apply, even if you have not used eBiz in the past. Plans under 25 MB can be emailed. For large plans over 25 MB, entities should work with the reviewer/division to upload via LiquidFiles. Directions for submitting docs via LiquidFiles is available on YouTube. We apologize for the inconvenience and thank you in advance for your understanding. If you wish to send hard copies of documents to any of Ohio EPA’s district offices, the best method to ensure we receive these documents is to send them via U.S. Mail. Since all offices are closed, deliveries outside of U.S. Mail (FedEx, UPS) will likely be returned because the offices are closed and deliveries cannot be made.

To report a spill or environmental emergency, contact the spill hotline (800) 282-9378 or (614) 224-0946

Testing Procedures

Position 1

Picture of person exiting their vehicle and entering a booth

1. The inspector asks you to exit your vehicle and wait inside the booth while your vehicle is tested.


2. The inspector performs a tampering inspection on your vehicle. They make sure your vehicle has both a gas cap and a catalytic converter (if it was manufactured with both).  They also check for obvious fluid leaks, bald tires and other safety concerns that may prevent your vehicle from being tested.


3. The inspector enters the Vehicle Identification Number (VIN) into the computer so that the emissions standard for your vehicle can be pulled up and the vehicle identified. 

Position 2

Inspecting the car

OBD Test

If your vehicle is 1996-or-newer (gasoline) or 1997-or-newer (diesel), it will be tested with On-Board Diagnostics (OBD II) technology.* A handheld reader device will be connected to your vehicle's data port to download emission control system performance codes.

If your vehicle's data port is inaccessible, your vehicle will be rejected and asked to return once the data port is made accessible.

Position 3

Getting back into the car

1. The vehicle is now driven from Position 2 to Position 3 and prepared for the gas cap pressure test. The inspector will remove your gas cap and connect it to a gauge that measures pressure. This ensures that gasoline vapor is not being lost from your tank. 


2. Once the testing is complete, the inspector will hand you your Vehicle Inspection Report and explain the results. 


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