Hazards for nearby residents and cleanup workers of waste sites

How clean is clean: a review of the social science of environmental cleanups

Environmental cleanup may involve decontaminating an area affected by a radiological release, containing an oil spill, or remediating a Superfund site or brownfield. It is a key component of how environmental agencies work to protect public health and the environment. There are many publications on technical protocols for cleanup and waste disposal. Additionally, there has been much social science work on the social problems of environmental contamination. However, social science research on cleanup itself has been much more scattered across disciplines and incidents. To date, there has not been a comprehensive review of the social factors that affect cleanup processes and outcomes. Such social factors may include cultural worldviews that shape stakeholder perspectives on 'how clean is clean' and social relationships among stakeholders. This article fills this gap by providing an interdisciplinary literature review of the social science of environmental cleanup. Three principal themes emerged from the 97 articles that met selection criteria: effects on cleanup worker health, public engagement and decision-making, and societal benefits of cleaned-up sites. The review points to areas where further research is needed. For example, there is a lack of mixed methods and interdisciplinary engagement within the literature. Additionally, few articles compare cleanup situations. There is also a need for further investigation into specific social science topics such as labor practices, gender, race, and power relationships. To address these gaps, we argue for the development of a comprehensive framework or model as well as the exploration of broader questions complicating cleanups. Overall, this area of research has significant potential to benefit environmental cleanup policy and practice worldwide, while advancing social theory about people and the environment.

Assessment of human health risks posed by consumption of fish from the Lower Passaic River, New Jersey

The Lower Passaic River (LPR) in New Jersey has been impacted by variety of human activities over the course of the last two centuries. In this risk assessment, we assessed potential human health risks associated with consumption of fish from the LPR, the human exposure pathway of greatest concern when addressing contaminated sediments. Our risk assessment incorporates fish consumption information gathered during a year-long, intercept-style creel angler survey and representative fish tissue concentrations for 156 chemicals of potential concern (COPCs) obtained from USEPA's public database (OurPassaic website: http://www.ourpassaic.org/projectsites/premis_public/index.cfm?fuseaction=contaminants). Due to the large number of COPCs investigated, this risk assessment was divided into two phases: (1) identification of COPCs that contribute to the majority of overall excess cancer risk and hazard estimates using deterministic and probabilistic methods, and (2) probabilistic characterization of risk using distributions of chemical concentration and cooking loss for those compounds identified in Phase 1. Phase 1 relied on point estimates of COPC concentrations and demonstrated that PCDD/Fs and PCBs (dioxin-like and non-dioxin-like) are the greatest contributors to cancer risk, while non-dioxin-like PCBs are the primary contributors to non-cancer hazard estimates. Total excess cancer risks for adult and child and receptors estimated in Phase 1 were within USEPA's acceptable excess cancer risk range, with the exception of RME child (3.0 x 10(-4) and 1.3 x 10(-4) for deterministic and probabilistic approaches, respectively). Phase 2 focused on PCDD, PCDF, and PCBs and used distributions of chemical concentrations in fish. The results showed that all excess cancer risk estimates were within the acceptable risk range, although non-cancer hazard estimates for PCBs slightly exceeded a Hazard Index of 1. This HHRA of LPR fish ingestion represents the most comprehensive evaluation conducted to date, and demonstrates that measured concentrations of COPCs are not likely to pose a health risk to people who currently consume fish from the LPR.