About 30 people are facing various charges following arrests and citations during a DUI-Driver’s License checkpoint in Santa Rosa. Police arrested nine people for DUI and cited or arrested an additional 18 for unlicensed vehicles and suspended or revoked license plates late Friday night. Officers from CHP, Rohnert Park, Sebastopol, and Cotati also participated at the checkpoint on Farmers Lane, south of Sonoma Avenue. Police say future checkpoints at unannounced locations are planned.