Community-Scale Monitoring of Particle-Bound Metals in Two Environmental Justice (EJ) Communities in the South Coast Air Basin: II. Stationary Monitoring Results

CHRISTOPHER LIM, Mohammad Sowlat, Julia Montoya-Aguilera, Steven Boddeker, Ethan Balagopalan, Bill Grant, Eric Holden, Sina Hasheminassab, Payam Pakbin, Andrea Polidori, Jason Low, South Coast Air Quality Management District

     Abstract Number: 493
     Working Group: Identifying and Addressing Disparate Health and Social Impacts of Exposure to Aerosols and Other Contaminants across Continents, Communities, and Microenvironments

Abstract
Literature on the community-scale, spatio-temporal variability in ambient concentrations of particulate metals, many of which are known toxic air contaminants (TACs), is scarce. This scarcity is more highlighted in Environmental Justice (EJ) community, where residential areas and sensitive receptors are intermixed with urban sources. South Coast Air Basin (SCAB) is home to many EJ communities, including the East Los Angeles and Southeast Los Angeles. Both of these communities have been designated by California Air Resources Board (CARB) to be part of the Assembly Bill (AB) 617, a state-wide program that aims to reduce the impact of air pollution in EJ communities. East Los Angeles and Southeast Los Angeles communities are home to metal-processing facilities that are known sources of particulate metals. Residents in these communities have concerns about potential exposure to emissions of particle-bound metals from these facilities. To address this air quality concern, a year-long air monitoring campaign was conducted, comprising stationary as well as near-source, hyperlocal mobile monitoring of multi-metals. In this presentation, results on the temporal (i.e., diurnal, day-of-the-week, seasonal) trends of particle-bound metals measured at two monitoring stations in the East and Southeast Los Angeles communities will be provided. This overview provides information on how the analysis of the data allows for inferences on the sources of particle-bound metals in the target communities. In an accompanying presentation, results from the mobile monitoring surveys conducted in these two communities will be discussed.