Science Inventory

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This presentation covers experiments that were conducted to compare the sampling of a stormwater detention basin via grab sampling, with an ISCO autosampler device, and with an EDNA sampler for recovery of Bacillus globigii spores a surrogate for Bacillus anthracis.  Three d...

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...

EPA has been conducting research to evaluate the effectiveness of different air cleaning and treatment technologies against infectious aerosols. Efficacy testing is often conducted under conditions that are not representative of real world settings, which can make it difficult to...

The U.S. Environmental Protection Agency's (EPA) Homeland Security Research Program has been conducting research to evaluate the efficacy of different technologies against viruses, including SARS-CoV-2, on surfaces and in the air. These slides will be presented as part of a large...

The Office of Research and Development within the U.S. Environmental Protection Agency (EPA) is conducting research to evaluate the impact of changing test methodologies on the effectiveness of ultraviolet (UV) devices, including those that emit Far-UVC, against microorganisms on...

Building occupants face diverse biological threats, from intentional attacks with biological agents (e.g., weaponized spores), to contagious diseases. As a result of the COVID-19 pandemic, there has been an increasing awareness of and interest in mitigation strategies for reducin...

EPA has been conducting research to evaluate the effectiveness of different air cleaning and treatment technologies against infectious aerosols. Efficacy testing is often conducted under conditions that are not representative of real world settings, which can make it difficult to...

The U.S. Environmental Protection Agency’s (EPA) Homeland Security Research Program has been conducting research to evaluate the efficacy of air cleaning and treatment technologies against infectious bioaerosols. The COVID-19 pandemic has increased interest in these technol...

The detonation of a radiological dispersal device (RDD) in an urban area can cause widespread disruptions and require extended remediation. Protective action guidelines (PAGs) have been developed by several organizations to aid decision makers in enacting public safety measures s...

The COVID-19 pandemic has highlighted the role that airborne transmission can play in the spread of disease. Accordingly, there is increased interest in technologies that claim to reduce or eliminate virus transmission via aerosols in occupied indoor spaces, such as in schools, t...

The Office of Research and Development within the U.S. Environmental Protection Agency (EPA) is conducting research to evaluate the effectiveness of different ultraviolet (UV) devices against microorganisms on surfaces and in the air.  Efficacy testing is often conducted usi...

The threat of bioterrorism has spurred research on the decontamination and containment of different agents. Anthrax [causative agent Bacillus anthracis (BA)] can lead to severe infections in humans and animals, particularly when inhaled. Research has been conducted on decreasing ...

Urbanization increases the density of humans and infrastructure while increasing the likelihood of bioterrorist attacks, like aerosol dispensation of spores. Bioterrorism decontamination needs to be precise and effective. Bacillus atrophaeus (formerly B. subtilis var. niger and B...

The COVID-19 pandemic has raised interest in technologies that are intended to reduce concentrations of infectious aerosols, which can potentially reduce the risk of disease transmission and improve overall indoor air quality, through either pathogen capture or inactivation. It h...

Technologies that can reduce concentrations of airborne microorganisms through either particle capture or inactivation are important tools for reducing the risk of disease transmission and improving overall indoor air quality. The effectiveness of these technologies is tested in ...

This paper compared simulation results from different model constructions of a Storm Water Management Model (SWMM) after radiological contamination from a hypothetical dirty bomb scenario. The model constructions included a utility-provided combined sewer stormwater model, a high...

The U.S. Environmental Protection Agency’s (EPA) Homeland Security Research Program has been conducting research to evaluate the efficacy of air cleaning and treatment technologies against infectious bioaerosols. The COVID-19 pandemic has increased interest in these technol...

Motivated by the COVID-19 pandemic, research was conducted to evaluate devices potentially capable of inactivating SARS-CoV-2 on surfaces found in the built environment, to augment chemical-based surface disinfection approaches. (Far-) UVC radiation is a well-described inactivati...

The U.S. Environmental Protection Agency’s (EPA) Homeland Security Research Program has been conducting research to evaluate the efficacy of air cleaning and treatment technologies against infectious bioaerosols. The COVID-19 pandemic has increased interest in these technol...

The COVID-19 pandemic has highlighted the role that airborne transmission can play in the spread of disease. Accordingly, there is increased interest in technologies that claim to reduce or eliminate virus transmission via aerosols in occupied indoor spaces, such as in schools, t...

There are many different types of air cleaning technologies that claim to reduce concentrations of airborne pathogens, but a lack of standardized test methods and challenges with testing design make it difficult to compare how effective these technologies are in real world settin...

The COVID-19 pandemic has highlighted the role that airborne transmission can play in the spread of disease. Accordingly, there is increased interest in technologies that claim to reduce or eliminate virus transmission via aerosols in occupied indoor spaces, such as in schools, t...

Historically, detecting water contamination has involved collecting and directly analyzing liquid samples, but recent advances in filter sampling methods offer numerous potential advantages. Emerging technologies, including environmental DNA (eDNA) samplers, could be used for rem...

EPA has been conducting systematic testing using a large-scale bioaerosol test chamber (3000 ft3) with a recirculating mock heating, ventilation, and air conditioning (HVAC) duct to evaluate the efficacy of these technologies against aerosolized bacteriophage MS2, as a surrogate ...

This presentation will provide an overview and key findings from EPA’s research to evaluate how effective different air cleaning and treatment technologies are in reducing airborne pathogen concentrations. There are a growing number of these technologies being marketed (e.g...