Science Inventory

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This poster, “Building Factors Influencing Indoor Air Quality During Wildfire Smoke Events,” provides an overview of the results and significance of a field study conducted in Missoula County, MT examining indoor air quality in public and commercial buildings during a...

The do-it-yourself (DIY) air cleaner consisting of a box fan and a furnace filter is a widely used low-cost alternative to commercial air cleaners because of its increased accessibility. We evaluated the clean air delivery rate (CADR) of different DIY air cleaner designs for redu...

This study assessed the impact of brownfield sites, categorized by cleanup and redevelopment status, on nearby property values in Fulton County, GA. Data on location and status of brownfield sites were obtained from EPA’s Assessment, Cleanup and Redevelopment Exchange Syste...

Presentation outlining prospective dissertation research on the Fate and Transport of wastewater linked contaminants. Research investigates the environmental, spatial, temporal, and laboratory methodological trends in monitoring wastewater impacts to surface water.

A novel cyanotoxin implicated in the deaths of around one hundred bald eagles and hundreds of coots across the Southeastern, US has recently been discovered. Upon initial investigation, the pathophysiology of the infected animals included the development of large vacuolar lesions...

Peer review of the Heavy-Duty Technology Resource Use Case Scenario (HD TRUCS) Tool used to analyze heavy-duty (HD) vehicle energy usages and associated component costs.

Perfluorooctanoic acid (PFOA) is a toxic and recalcitrant perfluoroalkyl substance commonly detected in the environment. Its low concentration challenges the development of effective degradation techniques, which demands intensive chemical and energy consumption. The recent strin...

The purpose of this lecture is to provide a summary of the EPA's research activities with regards to waterborne protozoa with specific emphasis on methods development to detect Cryptosporidium Giardia, and Toxoplasma gondii.

Hester-Dendy (HD) multi-plate samplers have been widely used by state and federal government agencies for bioassessment of water quality through use of macroinvertebrate community data. To help guide remediation and restoration efforts at the Niagara River Great Lakes Area of Con...

Wildfire activity in western US forests has increased over the last two decades, increasing solid and nutrient loadings to streams, and in some cases threatening drinking water supplies. Here, we demonstrate that a linked LANDIS-VELMA modeling approach can simulate wildland fire ...

Regulatory organizations such as the U.S. Environmental Protection Agency (EPA) assess the potential environmental persistence of manufactured chemicals based on their physicochemical properties and transformation rates. Hydrolytic degradation is an important environmental transf...

Presentation 01/08/2023 -International Conference on the Remediation and Management of Contaminated Sediments.  Topic: Analytical methods for PFAS in environmental media. Types of analytical and standard methods. Drinking Water Sample Methods Method 537 Method 533 Non-Drink...

Several thousand intentional and unintentional chemical releases occur annually in the U.S., with the contents of almost 30% being of unknown composition. When targeted methods are unable to identify the chemical(s) present, additional approaches like non-targeted analysis (NTA) ...

Powerpoint for Washington Wetlands Monitoring and Assessment Group to brief them on the status of our ROAR

Presentation to the Biosolids Science Advisory Board (SAB) Meeting May 2023. Biosolids, or treated sewage sludge, are produced from wastewater treatment processes and can be beneficially used or disposed. Section 405(d) of the Clean Water Act (CWA) requires EPA to review sewage s...

With the emergence of cloud computing technologies, many earth system modeling groups have explored cloud-based solutions for managing large modeling input and output datasets. At EPA large (100s of GB to 10s of TB) modeling datasets from the Community Multiscale Air Quality (CMA...

Blackwater rivers and streams are a distinct resource type in multiple ecoregions of the United States, including the Coastal Plains. Given the unique nature of blackwaters, they may not be fully protected if using typical water quality standards. Information provided by State ag...

EPA has conducted prior decontamination research for traditional CWAs, but there is a scientific data gap for decontamination technologies capable of remediating sensitive equipment contaminated with a Fourth Generation Agent (FGA). The purpose of this project was to evaluate the...

An intentional and nefarious attack or unintentional release of a chemical warfare agent (CWA) is expected to trigger a significant effort to clean up a contaminated area. Such effort becomes more complex when considering the permeability of common indoor building materials to so...

This report summarizes the results of infrastructure decontamination experiments performed at the WSTB.  These experiments focused on simulating contamination of drinking water distribution pipes with a commonly available insecticide formulation containing malathion.  M...

Several thousand intentional and unintentional chemical releases occur annually in the U.S., with the contents of almost 30% being of unknown composition. When targeted methods are unable to identify the chemicals present, alternative approaches, including non-targeted analysis (...

The U.S. EPA’s Office of Research and Development (ORD), in working with its multiple state and federal partners, is tasked with helping to determine if conditions have improved post-remediation and restoration at Great Lakes AOC sites.  Environmental agencies of the G...

A release of a chemical warfare agent (CWA) will create an acute and significant exposure risk to the public as well as remediation contractors who would be tasked to cleanup a contaminated site. It would require decontamination of the contaminated area which may hold sensitive e...

Per- & Polyfluoroalkyl Substances (PFAS) are a growing environmental concern due to their potential toxic effects and persistence in the environment. The physical and chemical properties that make PFAS persistent and mobile in the environment also make them particularly chall...

Lack of surface sampling and analysis methods are available to identify potential toxic byproducts of Novichok agents. While Novichok agents were sampled and analyzed, there was not much information to support and/or investigate potential breakdown/byproducts from environmental F...