Investigating the role of state permitting and agriculture agencies in addressing public health concerns related to industrial food animal production

Waves of change: A systematic literature review of water and environmental justice research

For decades, researchers have sought to document injustices, highlight activism, and identify pathways in moving towards environmental justice. Environmental justice (EJ) research regarding water has been predominantly focused on drinking water. This project sought to identify and analyze the breadth of peer-reviewed research on environmental justice and water beyond drinking water. We conducted a systematic literature review to catalog a representative sample of academic literature on environmental justice and surface water. We found a focus on freshwater rather than marine EJ research, with the biggest focus on anthropogenic-induced change and management and policy considerations. Distributional and procedural injustices were more commonly investigated than recognitional and capabilities injustices. The most common research efforts were qualitative case studies and larger spatial analyses of disparities. There remains considerable need for research connected to the complex issues of EJ and water.

Ambient Ammonia Exposures in an Agricultural Community and Pediatric Asthma Morbidity

BACKGROUND

Large-scale animal feeding operations compromise regional air quality in the rural US through emission of pollutants, such as ammonia gas. Exposure to airborne pollution from animal feeding operations may cause pediatric asthma exacerbations in surrounding communities.

OBJECTIVES

To describe spatial and temporal patterns in ambient ammonia concentrations in an agricultural region, and to investigate associations between short-term fluctuations in ammonia and subsequent changes in respiratory health in children with asthma.

METHODS

For 13 months in the Yakima Valley of Washington State, 14 monitors sampled ammonia in outdoor air for 24-hour periods every 6 days. School-age children with asthma (n = 51) were followed for two health outcomes: biweekly reports of asthma symptoms and quick relief medication usage, and daily measurements of forced expiratory volume in 1 second. We assessed associations between each outcome and ammonia using generalized estimating equations.

RESULTS

Twenty-four-hour ammonia concentrations varied from 0.2 to 238.1 μg/m during the study period and displayed a strong correlation with proximity to animal feeding operations. The percentage of forced expiratory volume in 1 second was 3.8% lower (95% confidence interval = 0.2, 7.3) per interquartile increase in 1-day lagged ammonia concentration and 3.0% lower (95% confidence interval = 0.5, 5.8) for 2-day lagged concentration. We observed no associations between self-reported asthma symptoms or medication usage and estimated ammonia exposure.

CONCLUSIONS

Ammonia concentrations were elevated in this community and strongly predicted by proximity to animal feeding operations. Ammonia's association with acute lung function decrements in children with asthma in the surrounding community may be causal or, alternatively, ammonia may be a marker for other pollutants from animal feeding operations associated with respiratory effects.