The San Joaquin Valley Air Pollution Control District is looking to better the region’s air quality by fixing those vehicles that are releasing polluting exhaust through their annual Tune In and Tune Up Car Clean-Up Event.

The air district is partnering with Valley Clean Air Now to sponsor the event, which is returning to the Stanislaus County Fairgrounds on Saturday with hundreds of vouchers to help pay for smog repairs.

The event is done as an effort to help eliminate mobile source pollutants generated by older vehicles.

The public is invited to bring down their vehicle and receive a free emissions test. The first 525 vehicles that don’t pass the emissions test and are in repairable condition will get vouchers of $500 to be used for repairs at STAR certified smog shops.

Participants in the program must be residents in the San Joaquin Valley that have owned the vehicle for six months or more. The vehicle also should be one that has already failed an emissions test or is likely to fail because the event will be not giving out smog certificates. There is no economic qualification or limit on vehicles.

The Tune In and Tune Up event is from 9 a.m. to 3 p.m. Saturday. It may close earlier if the maximum number of vouchers has been reached. Entry will not be allowed prior to 6:30 a.m. Participants should expect a two hour wait or more. Free food and drinks will be available starting at 9 a.m. and lasting until supplies run out.

For more information about the Tune In and Turn Up program visit info@valley-can.org or call 1-800-806-2004.