Analyze

Studie provides visual representations of lead concentration in Santa Ana cross matching it with vulnerability risk.

“Also of note when interpreting our results is that this study did not take into consideration the ingestion of heavy metals through the dietary route. Had we considered this additional exposure pathway, our calculated chronic daily intake levels of heavy metals would have been greater, resulting in higher estimated risk (particularly for metals such as Pb, As, and Cd which have been widely documented in various foods)” (Marsi et al. 2021)

“Both cancer and non-cancer risk at the Census tract level exhibited positive correlations with indicators of social as well as physiological vulnerability” (Marsi et al. 2021)

Exposure to heavy metals has been associated with adverse health effects and disproportionately impacts communities of a lower socio-economic status.  

This study used a community-based participatory research approach to collect and analyze a large number of randomly sampled soil measurements to yield a high spatially resolved understanding of the distribution of heavy metals in the Santa Ana soil, in an effort to exposure misclassification. This study looks into average metal  concentrations at the Census tract level and by land use type, which helps map potential sources of heavy metals in the soil and better understand the association between socioeconomic status and soil contamination (Marsi et al. 2021). 

In 2018, soil samples of eight heavy metals including lead (Pb), arsenic (As), manganese (Mn), chromium (Cr), nickel (Ni), copper (Cu), cadmium (Cd), and zinc (Zn) were collected across Santa Ana. These were analyzed at a high resolution using XRF analysis. Then, metal concentrations were mapped out and American Community Survey data was used to assess the metals throughout Census tracts in terms of social and economic variables. Risk assessment was conducted to evaluate carcinogenic risk. The results of the concentrations of soil metals were categorized according to land-use type and socioeconomic factors. “Census tracts where the median household income was under $50 000 had 90%, 92.9%, 56.6%, and 54.3% higher Pb, Zn, Cd, and As concentrations compared to high-income counterparts” (Marsi et al. 2021). All Census tracts in Santa were above hazard inder >1, which implies non-carcinogenic effects, and almost all Census tracts showed a cancer risk above 104, which implies greater than acceptable risk. Risk was found to be driven by childhood exposure.

It was concluded that the issue of elevated soil contamination relates back to environmental justice due to overlap between contaminated areas and neighborhoods of lower socioeconomic status. Marsi et al. (2021) found there needs to be more community-driven recommendations for policies and other actions to address disproportionate solid contamination and prevent adverse health outcomes.      

Published in May 2021, amid the coronavirus pandemic where in-person community workshops and meetings turned into weekly virtual meetings. 

-> Authors:

Shahir Masri: Department of Environmental and Occupational Health, Program in Public Health, University of California, Irvine; air pollution scientist.

Alana M. W. LeBrón: Department of Health, Society, and Behavior, University of California, Irvine; Assistant Professor, Chicano/Latino Studies; Interests: structural racism and health, health of Latina/o communities, community-based participatory research.

Michael D. Logue: Department of Chicano/Latino Studies, University of California, Irvine

Enrique Valencia: Orange County Environmental Justice, Santa Ana

Abel Ruiz: Jóvenes Cultivando Cambios, Santa Ana; CRECE Urban Farming Cooperative member

Abigail Reyes: Community Resilience, University of California, Irvine

Jun Wu: Department of Environmental and Occupational Health, Program in Public Health, University of California, Irvine

The web platform appears to be a space to compile stories and information from Hurricanes Katrina and Sandy. The primary goal seems to be informing the public about the hurricanes, specifically the aftermath in the days and months following the flooding. It serves as a method of remembrance for what occurred (the flooding, death toll, lack of appropriate and timely response, the struggles of survivors) and as a way to warn that these problems will continue to occur in the future. In the last few days, Hurricane Matthew ravaged the Caribbean, South Carolina, Georgia, and Florida. It will take weeks to return power to all who have lost it, and exact damage tolls will take months to compile. Although each time, with each pass of destruction, our responses seem to be improving, the disasters continue to accumulate-- despite warnings such as this site. 

It's unclear who, at this time, primarily views and utilizes the information presented here. However, this web platform seems to be one piece of an ongoing project called "Land of Opportunity". This film discusses the ongoing urban issues and developments in America; as we move forward from disasters and begin rebuilding, the question becomes how we want to fortify our cities. The film itself specifically focuses on Hurricane Katrina, while the interactive web platform inclides information about Hurricane Sandy. The film has had several showings, has DVD's for purchase, and a viewing request can also be made.

The creators of the platform and film are part of a C3 non-profit called NOVAC-- New Orleans Video Access Center. There are several organizational partners that work on the ground accomplishing the organization's goals. These partners also provide a measure of funding; as a non-profit, most of the support comes from outside donations, either to the organization or through one of their proxy groups.

The system allows for compilation and continued monitoring of the aftermath of these hurricanes. The platform also provides access to the film and organization following those still effected by the disasters years later. It also serves as an area for conversation and discussion for how to mitigate the effects of disasters in the future.