Science Inventory

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Per- and polyfluoroalkyl substances (PFAS) comprise > 10,000 synthetic compounds that are globally distributed and highly persistent but remain challenging to monitor. Here we assess the utility of baleen-an accreting, keratinaceous tissue that baleen whales use for filter-fee...

Dataset from Regional-ORD Applied Research (ROAR) Project FY22, Region 7: "Soil Health Practices' Impact on Groundwater Nitrate Contamination " A workbook of all the soils data collected near Holton, Kansas, in agricultural fields. Laboratory analysis of soil properties...

Molecular, cellular, and organismal alterations are important descriptors of toxic effects, but our ability to extrapolate and predict ecological risks is limited by the availability of studies that link measurable end points to adverse population relevant outcomes such as cohort...

Atlantic killifish (Fundulus heteroclitus) is a valuable model in evolutionary toxicology to study how the interactions between genetic and environmental factors serve the adaptive ability of organisms to resist chemical pollution. Killifish populations inhabiting environmental t...

Volatile Organic Compounds (VOCs) are key precursors to tropospheric ozone (O3) and secondary organic aerosols. An explicit representation of individual VOCs in chemical transport models is complex and computationally infeasible. Except for a few explicit species, VOCs are often ...

Climate-induced changes in streamflow and nutrient loading have important implications for estuarine water quality. We present an empirical approach for estimating changes in the magnitude, timing, and duration of streamflow based on statistically downscaled projections from glob...

The collection of documents include a survey dataset and cover page that describes the survey methods. The survey data was collected in 2020 with EPA staff who work on Superfund, brownfield, emergency response, and other types of cleanup actions. The purpose of the survey was to ...

This presentation provides a history of the development of the CMAQ modeling system, discusses recent and ongoing research and development activities, and provides some forward-looking information on future CMAQ development plans. The purpose of the presentation is to inform scie...

Methane sensing technologies have wide application across environmental fields including oil and gas development and landfill and agricultural emissions monitoring. Anthropogenic emissions account for the majority of the global methane budget, and component-based methane emission...

This is a presentation to be potentially shared with ESTCP describing the lead service line testbed on the Edison Environmental Center. 

The 2007 NAS report on Toxicity Testing for the 21st Century was a watershed moment for toxicology. Since then, the discussion is no longer whether to change but how and how fast? With knowledge in the life sciences doubling every seven years, we now have four times more understa...

The occurrence of toxic metal(loid)s in surface freshwater is a global concern due to its impacts on human and ecosystem health. Conceptual and quantitative metal(loid) models are needed to assess the impact of metal(loid)s in watersheds affected by acid rock drainage. Few case s...

The Github repository at https://github.com/USEPA/gcam-kaya-decomposition provides data samples, R-codes, examples of visualization outputs, and Readme documents of emissions decomposition analysis. We combine energy systems modeling with decomposition analysis methods to investi...

Remediation of environmental contamination at sediment sites is complex, expensive, and the clean-up procedures themselves can be an environmental stressor. Selecting a cleanup technique that balances long term effectiveness and minimal adverse environmental impacts is critical t...

Suffolk County, New York is the eastern-most county on New York’s Long Island and is surrounded on all sides by coastal embayments impaired due to excess loading of nitrogen. Sources of nitrogen include atmospheric deposition and loading via groundwater from agricultural an...

Technical Fact Sheet Most emergency water treatment systems are large and expensive tractor-trailer mounted systems. They can be complicated to operate and maintain (high pressures and concentrated wastes) given their reliance on reverse osmosis water treatment technology. An ...

The past 50 years have seen biomonitoring emerge as an essential means of generating the knowledge needed to inform protection and restoration of freshwater ecosystems. Despite the successes of biomonitoring, most freshwater ecosystems remain unmonitored. Moreover, degradation of...

The Tropospheric Emissions: Monitoring of Pollution (TEMPO) instrument, launched in April 2023, is North America's first geostationary air pollution monitoring satellite mission. Together with Asia's Geostationary Environment Monitoring Spectrometer (GEMS) launched in 2020 and Eu...

Riparian functioning condition refers to a rating and description of the current ecological status of a reach of a riparian ecosystem in consideration of its potential hydrology, vegetation, and geomorphology. We assessed functioning condition of flowing riverbank areas of the Ba...

Soil moisture constitutes about 3% of circulating renewable freshwater resources; however, its role is vital for terrestrial ecosystems. It serves as an essential mediator of water between the atmosphere, plants, and subsurface. Soil often acts as a temporary reservoir, accumulat...

Supercritical Water Oxidation (SCWO) process for hazardous waste destruction uses the temperature and pressure of water above the critical point (374 oC, and 22.1 MPa) to degrade hazardous organic pollutants into CO2, water, sodium fluoride and other benign compounds. Using SCWO ...

Muskegon Lake is a drowned river-mouth lake designated by the U.S. EPA in 1987 as a Great Lake Area of Concern. All nine of the lake’s beneficial use impairments have been approved for removal, and the region is awaiting final approval from EPA for official delisting. Altho...

Increased magnitude and frequency of precipitation events are some of the effects of climate change that most commonly impact urban tropical estuaries. The resultant flooding, in combination with a faulty wastewater infrastructure, exposes urban coastal communities to contaminate...

Background:      This sub-product will be a consolidation of work efforts initiated under a CRADA (Lubrizol CRADA) and the current RAP and proposed for this new RAP.  Each sub-product will relate to applied research to assess, demonstrate, develop, and im...

This presentation examines short-term Vapor Intrusion (VI) temporal variability affected by seasons in volatile organic compounds (VOCs) measured in indoor air. Samples were collected concurrently from two buildings, a residential style office building (1600sqft), and a larger co...