Near-road NO2 Monitoring
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This webpage is intended to provide information regarding the implementation of national near-road monitoring stations. Materials to be provided on this webpage include the Near-road NO2 Technical Assistance Document, the Near-road NO2 Pilot Study, materials used in support of the near-road NO2 pilot study, and other related near-road monitoring resources. Additional near-road monitoring resources, particularly those regarding research, can be found on EPA’s Office of Research and Development’s Near Roadway Research webpage.
Near-road NO2 Technical Assistance Document (TAD)
The Near-road NO2 Technical Assistance Document (TAD) has been developed to aid state and local air monitoring agencies in the implementation of required near-road NO2 monitoring stations. The June 2012 version of the TAD reflects the collaboration between partner state and local air monitoring agencies and associations, partnering state departments of transportation, the Federal Highways Administration, and the EPA. This document also reflects feedback, concepts, and suggestions from two reviews conducted by the Clean Air Scientific Advisory Committee (CASAC) Ambient Monitoring and Methods Subcommittee (AMMS). In addition to the TAD, the EPA has provided here a link to a recorded webinar (circa December 2011) that provides a walk-through of the TAD and includes interaction with state and local participants.
- Near-Road NO2 Monitoring Technical Assistance Document (PDF) (135pp, 1.9 MB) - June 2012
- Near-Road NO2 Implementation Webinar - January 2012
Near-road NO2 Pilot Study
In conjunction to the development of the Near-road NO2 TAD, a near-road NO2 pilot study was initiated by state and local air monitoring stakeholders to evaluate, improve, and document the near-road monitor siting process with EPA, and to provide firsthand experience to several air agencies in the full installation of a near-road NO2monitoring station. The near-road NO2 pilot was organized between the National Association of Clean Air Agencies (NACAA), volunteer state and local air agencies, and the EPA. The experiences gained in the pilot study are intended to be shared by those air agencies participating in the pilot with the air monitoring community. Materials provided here are products of the pilot activities, including the final study report (which includes sample data) and the Quality Assurance Project Plan.
- Summary of Results from Near-Road NO2 Monitoring Pilot Study (PDF) (122pp, 8.8 MB) - December 2011
- Quality Assurance Project Plan: Use of Passive Sampling Devices (PSDs) in a Near-Road Monitoring Environment (PDF) (106pp, 1.9 MB) - April 2011