AAAR 33rd Annual Conference
October 20 - October 24, 2014
Rosen Shingle Creek
Orlando, Florida, USA
Abstract View
Outdoor and Indoor Black Carbon at Multiple Schools in Salt Lake City, Utah
Jennifer DeWinter, Steven Brown, David Vaughn, PAUL ROBERTS, Sonoma Technology, Inc
Abstract Number: 320 Working Group: Urban Aerosols
Abstract To help understand pollutant concentrations inside classrooms in relation to ambient (outside) concentrations under existing air handling and ventilation systems, black carbon (BC) was measured indoors and outdoors at four schools in Salt Lake City, Utah, during March-June 2014. The schools are within 2,100 feet of a planned major freeway, and two of them will abut the freeway. The data generated by this monitoring will inform us of the existing air handling systems’ filtration effectiveness for removing BC. BC is a frequently used surrogate for diesel particulate matter (DPM), which has been shown to have significant health effects in near-road environments. DPM, as measured by BC, is the focus of this effort, as 84% of the cancer risk at one of the schools was attributed to DPM (on the basis of MATES II cancer risk values and ambient air monitoring of BC and gaseous air toxics during 2013). In addition to BC, PM2.5 was measured indoors and outdoors at one school. We will present results describing indoor and outdoor concentrations, diurnal and weekday/weekend variations, filtration efficiency at each school, and how outdoor concentrations compare to near-roadway concentrations elsewhere. Results will assist the Utah Department of Transportation’s Air Working Group and the school district in determining the best mitigation measures for indoor air pollution.