Open House at the Southern California Headquarters – Mary D. Nichols Campus PRINT Location Southern California Headquarters – Mary D. Nichols Campus Start Date May 21, 2022 2:00 pm End Date May 21, 2022 5:00 pm Contact Email helpline@arb.ca.gov Categories Event Type Outreach Featuring:Tour labs where everything from lawn mowers to semi-trucks are testedSee the largest art collection dedicated to air qualityView the zero-emission truck & bus showcaseRide & drive zero-emission carsVisit interactive exhibitor booths from the Riverside communityPark at UC Riverside’s Lot 30 & take the zero-emission shuttle bus to CARB.