Science Inventory

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This paper presents the process used to develop an overland flow model of radionuclide transport following an aerosol deposition from a hypothetical radiological dispersal device explosion. The process included the integration of digital elevation, building, and land cover inform...

Understanding the migration path of pollutants is critical to protecting human and environmental welfare, particularly in population-dense settings with a high fraction of impervious materials that contribute to potentially high pollutant wash off. This research measured the rem...

In support of improving simulated training, EPA is evaluating the use of three-dimensional commercial-off-the-shelf (3D COTS) game engines for facilitating modeling, training, and exercise efforts for CBRN incidents. Today’s 3D COTS game engines rival (if not exceed) the capabili...

Presentation to FDA on surface disinfection by UVC light during meeting with EPA including OCSPP

The COVID-19 pandemic has highlighted the role that airborne transmission can play in the spread of disease. Consequently, there has been an increasing focus on technologies that claim to reduce or eliminate aerosolized pathogens in indoor occupied spaces. There are many differen...

Motivated by the COVID-19 pandemic, the United States Environmental Protection Agency (EPA) is conducting research to evaluate the efficacy of devices to inactivate SARS-CoV-2 on surfaces in addition or as an alternative to chemical-based disinfectants. Devices that emit ultravio...

This report focused on researching United States Coast Guard (USCG) stormwater systems to summarize differences in meteorological/terrain features and operations of USCG assets by location. This information was used to develop a modeling framework that identified which hydrodynam...

This research will help states, tribes, local, and territorial governments, including public health agencies, guide homeowners, business owners, and workplace managers to reduce the risk of exposure to SARS-CoV-2. Abstract on EPA Research to Support Reducing Environmental Transmi...

Reducing the risk of exposure to SARS-CoV-2, the virus that causes COVID-19, relies on effective cleaning and disinfection, along with public health strategies like testing and social distancing. Recent studies have indicated that exposure to aerosolized SARS-CoV-2 can facilitate...

EPA has conducted numous laboratory studies to evaluate cleaning, disinfection, air cleaning, and other approaches for reducing exposure to SARS-CoV-2. This presentation will summarize those research efforts and the high-level findings.

Presentation to the International Ultraviolet Association on the UV disinfection rserach agaisnt SARS-CoV-2 virus on relevant surfaces

Stormwater modeling tools can be useful for predicting the precipitation-driven transport of contamination in the environment, and these models can be used following an intentional or natural disaster to aid decision makers for a variety of tasks, including developing sampling an...

Reducing the risk of exposure to SARS-CoV-2 relies on effective cleaning and disinfection, along with continued social distancing practices. EPA researchers are evaluating innovative ways to inactivate aerosolized virus and reduce airborne transmission of COVID-19 in large spaces...

This presentation provides a summary of tests conducted to determine the virucidal effects of Artemesia tilesii against bacteriophages MS2 and Phi6. Suspension tests conducted with the plant extract indicate no major difference between bacteriophage suspended in deionized water v...

As more workplaces, schools, and other mass gathering areas begin to reopen, they will need to think about the following three components of their operations during the COVID-19 pandemic: best cleaning approaches for common areas, monitoring water quality and water management pla...

This technical brief summarizes research conducted in EPA's Homeland Security Research Program to support development of technologies and practices for managing and treating decontamination wash water resulting from a Bacillus anthracis (anthrax) contamination incident. This bri...

This presentation summarizes the results of lab studies on the inactivation of UVC light against SARS-CoV-2 and two surrogate viruses as well as results from a field study in collaboration with LA Metro that measured UVC doses at various locations in a metro car outfitted with UV...

Development of numerical models to predict stormwater-mediated transport of pathogenic spores in the environment depends on an understanding of adhesion forces that dictate detachment after rain events. Zeta potential values were measured for Bacillus globgii and Bacillus thuring...

Presentation of preliminary results to LA Metro on the disinfection of surfaces with MS2 viruses (a surrogate to SARS-CoV-2) in the presence of UVC light.

Bacillus anthracis, the causative agent for anthrax, is a dangerous pathogen to humans and has a history as a bioterrorism agent. While sampling methods have been developed and evaluated for characterizing and clearing contaminated indoor sites, the performance of these sampling ...

The main objective of this study was to compare the re suspension of an inert sugar-based surrogate, known as DNA Tagged Reagents for Aerosol Experiments (DNATrax) developed by Lawrence Livermore National Laboratory (LLNL) under variable humidity conditions for an underground sub...

Cesium-137 (Cs-137) is a persistent contaminant that poses a significant risk to human health and the environment. Understanding the fate and transport of Cs-137 following a contamination incident is necessary for effective containment and remediation. In this study, we performed...

The Center for Environmental Solutions and Emergency Response (CESER) in the Office of Research and Development at the US Environmental Protection Agency conducts research to enhance response capabilities and community resilience to manmade and natural disasters. Following an int...

Following a terrorist attack or natural disaster, contamination could be spread broadly throughout the environment. The intentional or accidental release of chemical, biological, or radiological (CBR) agents is particularly concerning in large cities, where densely populated area...

Following a bioterrorist attack, materials contaminated with a biological agent pose significant health threats. A six-month outdoor sampling study was conducted using Bacillus globigii (Bg) to compare the spore recovery of traditional vs. emerging sampling methods over time. Bg ...