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This abstract is for a presentation discussing how X-ray absorption spectroscopy data provides insights into house dust and soil Pb bioavailability. This is critical, as it allows for better determination of Pb exposure via house dust and soil. Additionally, this is necessary for...

This report focuses on the problem of diving plumes, a term which generally refers to plumes that go deeper into aquifers with distances from their sources. This document presents the mathematical basis of software for real-time development and refinement of site conceptual model...

The Handbook provides a conceptual framework and indicators to assess the indirect impacts of extreme events (e.g., extreme heat, floods, drought, wildfires) on communities through potential exposure to contaminant releases from nearby contaminated sites and waste management faci...

Permeable reactive barriers (PRBs) are used for groundwater remediation at various sites worldwide. This technology has been efficient at appropriate sites for treating organic and inorganic contaminants using zero-valent iron (ZVI) as a reductant and as a reactive material. Cont...

Green rusts (GR) are important drivers for trace metal and nutrient cycling in suboxic environments. We investigated whether green rusts would incorporate aluminum (Al) or other elements from naturally-formed clay minerals containing easily-weatherable clay minerals (e.g. mica, i...

Passive sampling devices (PSDs) are increasingly used at contaminated sites to improve the characterization of contaminant transport and assessment of ecological and human health risk at sediment sites and to evaluate the effectiveness of remedial actions. The use of PSDs after f...

States and their constituent coastal communities recognize that wetlands are a critical environmental component of community resilience because of the beneficial ecosystem services they provide. One such service—the ability to protect adjacent upland areas and contaminated sites ...

Cleanup of contaminated sites focuses on activities needed to eliminate risks of contaminants to human health and the environment. As part of necessary efforts during contaminated site cleanups, an ecological risk assessment (ERA) is conducted to examine the extent of potential c...

With the 2011 promulgation of the Mercury and Air Toxics Standards by the U.S. Environmental Protection Agency, and the successful negotiation by the United Nations Environment Programme of the Minamata Convention, global emissions of mercury (Hg) have declined in North America. ...

Due to sea level rise, salt marshes are projected to &ldquo;migrate&rdquo; landward as saltwater drowns existing marsh and creates new potential marsh conditions in what is currently non-marsh condition. The fate of marsh migration will be decided by the communities surrounding t...

Along the trajectory of restoration implementation from planning to post-restoration monitoring, resource managers have identified a need for information and approaches to help inspire the public to act, evaluate alternatives, gain public support, monitor progress, and communicat...

Ecosystems downstream of mercury (Hg) contaminated sites can be impacted by both localized releases as well as Hg deposited to the watershed from atmospheric transport. Identifying the source of Hg in water, sediment, and fish downstream of contaminated sites is important for det...

In situ thermal remediation technologies rely on the addition of energy to the subsurface to change the phase distribution and other physical properties of volatile and semivolatile organic contaminants to mobilize them and aid in their recovery. The most used in situ thermal rem...

Transport of contaminants from roadways to the environment is well known, although studies of technologies for preventing and managing this appear infrequently in the literature. This paper reviews technologies studied for radiological contaminants. In addition to nuclear facilit...

Presentation to give at a meeting of EPA and STAR grantees working on issues of contaminated sites, disasters, and resilience.

Polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran (PCDD/F) are persistent, toxic, and bioaccumulative. Currently, PCDD/F monitoring programs primarily use fish and birds with potentially large home ranges to monitor temporal trends over broad spatial scales; senti...

Remediation to Restoration to Revitalization (R2R2R) is a framework to identify ecological and policy-based relationships between waterfront revitalization and large-scale aquatic sediment remediation or habitat restoration projects. Undertaking large-scale ecological restoration...

Current Understanding of PFAS Toxicology with Animal Models and Corresponding Findings in Epidemiological Surveys Christopher Lau, Center for Public Health and Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Pa...

This product will describe to the Regions and Program Office the factors that impact PRB longevity, including mineralization, gas generation, and microbial activity.  The selection of groundwater remediation technologies is best supported by a detailed understanding of groundwate...

&nbsp; This report provides a general overview of revitalization efforts undertaken at the East Mount Zion landfill site, a closed 10-acre Superfund site located in Springettsbury Township, York County, Pennsylvania.&nbsp;A partnership between EPA, ORD, PA Department of Environme...

Despite reduced anthropogenic release of lead (Pb), environmental Pb contamination remains widespread in the United States. House dust and soil are major sources of Pb exposure. Historically, soil has been attributed as a major driver of house dust Pb. Understanding the phases of...

Lead (Pb) contamination of soils is widespread in the United States and is an important source of Pb exposure in young children. Early life exposure to Pb has serious and long-lasting effects on health, making mitigation a critical public health goal. Removal/replacement of Pb-co...

Biomonitoring at contaminated sites undergoing cleanup, including Superfund sites, often uses bioaccumulation of anthropogenic contaminants by field-deployed organisms as a metric of remedial effectiveness. Bioaccumulation studies are unable to assess the equilibrium status of th...

This report addresses options to improve on the decontamination of permeable materials that are contaminated with a toxic chemical that has transferred into such material. Here, two surrogates of chemical warfare agents are considered to investigate the degree of transport, mater...

In planning for the next Strategic Research Action Plan (FY23-FY26 StRAP), EPA held four listening sessions in 2021 (September 16, 20, and 23) with tribal and state and local partners. This document contains a thematic summary of their perspectives on research needs related to cu...