The Goleta Police Department, along with the California Highway Patrol, will hold a DUI checkpoint, 6 p.m.-2 a.m. Friday, Aug. 21-22 at an undisclosed location within the city of Goleta. Checkpoint locations are chosen based on a history of DUI crashes and arrests, police said . “The primary purpose of checkpoints is not to make arrests, but to promote public safety by deterring drivers from driving impaired,” police said. During the checkpoint,…