Next >>

This is an invited presentation to students in the Duke University, Nicholas School of the Environment in the graduate class ENV581: Global Environmental Health: Principles and Case Studies. This presentation will provide students with an overview of the current wildfire landscap...

Extreme rainfall events have been increasing in frequency and intensity over the past few decades, exacerbating flooding throughout the eastern U.S. This trend is expected to amplify throughout the 21st century. Quantification of future changes in extreme events and associated fl...

Prescribed fire has emerged as an essential ecosystem management practice for maintaining forest health and mitigating wildfire risks. However, its spatio-temporal patterns and potential impacts on water quantity and quality remain poorly understood compared to those of wildfires...

The U.S. Environmental Protection Agency’s (EPA) Superfund program is responsible for the assessment, cleanup, and reuse of some of the most contaminated sites in the United States. The primary goal of Superfund work is to protect human health and the environment and the wo...

Air quality in the U.S. has improved greatly in the past half century, due to environmental policies such as the Clean Air Act (CAA) focused on controlling anthropogenic point and mobile sources. As the contributions of anthropogenic sources decrease and environmental stressors, ...

The community of Laguna de las Mareas (Las Mareas Bay) in Guayama, Puerto Rico, expressed health concerns to the EPA Administrator in November of 2022, regarding the impact of industrial activities, such as coal and coal combustion residuals potentially released into Las Mareas B...

Per- and polyfluoroalkyl substances (PFAS) are highly water-, grease-, and heat-resistant compounds known as “forever chemicals” due to their resistance to degradation. Aqueous film-forming foams (AFFFs) are PFAS-containing firefighting foams and a known source of env...

Publicly available cyanobacterial harmful algal blooms (cyanoHAB) forecasts are now available at www.epa.gov/habs/hab-forecasts, offering water quality and public health managers a tool for anticipating cyanoHAB conditions in the largest United States lakes and reservoirs. T...

Community Hazard-scape and Amenity Placement for Providing Improved Endpoints (CHAPPIE) is designed to characterize community resilience based on the hazards households face and amenities that contribute to their resilience with the aim to identify ways to improve community resil...

Geophysical methods are applicable for mine waste site investigations primarily for site characterization, monitoring, and groundwater objectives.  Several geophysical methods can be utilized to map mine waste pile characteristics, map near surface geology, understand ground...

The draft risk evaluation includes analyses of physical chemical properties, the fate and transport in the environment, releases to the environment, exposure to workers and the general population, including potentially exposed susceptible subpopulations, environmental risk charac...

EPA is submitting the draft risk evaluation of 1,1-dichloroethane, draft human health hazard technical support document of 1,2-dichloroethane, and associated supporting documents to the SACC for peer review, along with the public comments received.

This report presents the results of the third National Wetland Condition Assessment. Data were collected in 2021 and a small amount in 2022 as a result of COVID delays.

Growing evidence is showing that microplastics (1 µm – 5000 µm) and nanoplastics (<1 µm) are increasingly being found in biological materials, including human bodies. Therefore, understanding the fate and transport of micro- and nanoplastics (M&NP) ...

EPA received manufacturer requests to conduct risk evaluations for DIDP and DINP, both as categories of chemical substances, and subsequently granted and initiated risk evaluations for both of them. EPA is submitting the draft risk evaluation of DIDP, draft physical chemical, fat...

Per- and polyfluoroalkyl substances (PFAS) are ubiquitous in both indoor and outdoor air, and there is increasing need to effectively screen this diverse class of chemicals for inhalation toxicity potential. Since PFAS have strong surface-active properties, we hypothesized they m...

Globally, many wetlands and lakes are at risk for further loss, which can amplify downstream consequences of flood and drought events. We derived remotely sensed based time series of surface water storage (SWstorage) to determine when and where accounting for SWstorage dynam...

In October 2023, the IRIS Program released the draft IRIS Toxicological Review of Inorganic Arsenic for public comment and external peer review. The IRIS assessment of inorganic arsenic will undergo an independent external scientific peer review managed by EPA’s Science Advisory ...

This invited presentation as part of EPA Region 2 State/Territory Laboratory Group Meeting provides an overview of microplastics, the challenges of microplastic science, and the research conducted at EPA helping to fill the data gaps, including understanding fate and transport, i...

Despite considerable reductions in mobile source emissions, annual average aerosol concentrations measured in Los Angeles using Federal Reference Methods (FRM) have not appreciably declined over the past decade. Here, we use submicron aerosol measurements and zero-dimensional mod...

Polychlorinated biphenyls (PCBs) are a class of persistent environmental pollutants that exist in the environment as complex mixtures linked to a variety of adverse health effects. This review compiles and organizes human studies of selected health endpoints (early life size and ...

Background: Nationwide, in 2020, 24 % of the U.S. population lived near high volume roadways, a source ofnitrogen oxides (NOx) and nitrogen dioxide (NO2) emissions. This study synthesizes literature regarding NOx andNO2 gradients in the near-road environment to understand communi...

An update to the Ohio River Valley Water Sanitation Commission's Technical Committee on Ohio River HABs research and monitoring that occurred over 2025 will be provided. Progress for the year includes refinement of the 14 day ahead HABs occurrence forecast, revision of scripts us...

Two solutions containing ∼500 mg/L of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) were atomized at two post-flame locations within a natural gas-fired pilot-scale combustor with peak temperatures of ∼860 °C and ∼750 °C. The thermal de...

In ecology and related sciences, missing data are common and occur in a variety of different contexts. When missing data are not handled properly, subsequent statistical estimates tend to be biased, inefficient, and lack proper confidence interval coverage. Missing data are often...