AIR QUALITY IS TYPICALLY MEASURED BY RESOURCE AGENCIES USING VERY EXPENSIVE STATIONARY MONITORING EQUIPMENT. THE IDENTIFICATION OF THE BEST LOW COST AIR QUALITY SENSORS FOR DOT AIR QUALITY SPECIALISTS IS NEEDED FOR PORTABILITY AND TO BE ABLE ADDRESS AIR QUALITY COMPLAINTS ON HIGHWAY CONSTRUCTION PROJECTS AND FOR NEAR ROAD AIR QUALITY RESEARCH QUICKLY AND COST EFFECTIVELY. INCLUDE TRAINING AND WEBINAR FOR DOT AIR QUALITY SPECIALISTS.