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This document provides step-by-step instructions for the use of a 37-mm filter cassette (mixed cellulose ester [MCE] or a polytetrafluoroethylene [PTFE] filter), air sampling pump, and microvacuuming techniques to collect samples from porous surfaces potentially contami...

This is a dataset of malathion washoff data from experiments performed using a rainfall simulator. Two types of malathion - a technical (off-the shelf insecticide) and an analytical grade - were used in this study. They were applied to either concrete or asphalt coupons and allow...

Chemical dispersant formulations typically provide maximum oil dispersion in waters between 30-40 ppt (parts per thousand) salt content, which encompasses typical 35 ppt ocean salinity. Ocean salinity can vary locally, from low values due to rivers or ice melt, to extremely high ...

This dataset presents the monthly, quarterly, or annual quantities of solid waste disposed in landfills, including, but not limited to municipal solid waste landfills (MSWLFs) across the country. State- or facility-level disposal data was manually collected and transcribed into a...

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 resuspension of radioactively contaminated particles in a built environment, such as from urban surfaces like foliage, building exteriors, and roadways, is described empirically by current plume and dosimetry models used for hazard assessment and long-term risk purposes. When...

An overview of traditional emergency water treatment approaches includeing bulk water commercial and military systems and home Point-of-Use/Point-of-Entry systems is provided.  Additional information outlining recent EPA research on mobile emergency water treatment technolog...

When an environmental catastrophe resulting in contamination occurs, whether from intentional incident such as a terrorist attack or an unintentional incident such as an industrial spill, emergency responders and decision-makers need timely and accurate data. This need for data c...

In the United States (U.S.), the management of sludges generated from drinking water and wastewater treatment are overseen by the state agencies and much of that information, especially quantities incinerated or landfilled, are not communicated to the U.S. Environmental Protectio...

The impact of water and the wet-dry cycle was examined as a potential mitigation solution to pathogenic bacterial spore transport and inhalation risk via resuspension of spores from surfaces due to human activities. The natural occurrence of wet-dry cycles and the ease of applica...

A precipitation event’s drop size distribution (DSD) is a key characteristic and plays a critical role in quantitative precipitation estimation. In this study, DSD measurements were collected by a Parsivel2 disdrometer in Elizabeth City, North Carolina, U.S. from October 20...

The Wide Area Demonstration (WAD) was a field exercise conducted under the EPA’s Analysis of Coastal Operational Resiliency program, in conjunction with the Department of Homeland Security and the United States Coast Guard. The purpose of the WAD was to operationalize at field sc...

Radioactive fallout could have debilitating effects on drinking water and wastewater systems. Some drinking water system operators have plans to mitigate the effects of a water source contaminated with fallout, but most, if not all, wastewater operators have no such plans. Litera...

This report documents notes from a workshop held February 8th, 2024 in Raleigh, NC co-sponsored by North Carolina State University's Biological and Agricultural Engineering Extension program and The United States Environmental Protection Agency focused on the fate and transport o...

In the event of an accidental or intentional release of a chemical warfare agent (CWA), environmental samples must be collected, preserved, and analyzed to assess the size of the contaminated area and, following decontamination efforts, to determine whether cleanup goals have bee...

Dispersion within idealized urban environments was studied in a simulated neutrally buoyant, 1:200 scale boundary layer with a Meteorological Wind Tunnel at the EPA’s Fluid Modeling Facility. The measurements are used to offer a baseline of performance for the mechanical tu...

A new limit on the sulphur content in fuel oil used on board ships has been introduced to reduce sulphur oxide emissions. This has led to an increase in the use and transport of Low Sulphur Fuel Oil (LSFO) with commensurate increasing risk of spills. The objective of this study w...

The resuspension of radioactively contaminated particles from surfaces such as foliage and roadways is handled in a simple fashion by current models that use a site-specific resuspension factor, calculated from data from air samplers and ground sensors averaged over many location...

The resuspension of radioactively contaminated particles from surfaces such as foliage and roadways is handled in a simple fashion by current models that use a site-specific resuspension factor, calculated from data from air samplers and ground sensors averaged over many location...

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 study evaluated the microbiocidal efficacy of a cleaning and disinfection (C&D) treatment using stainless-steel coupons applied to three common types of animal mortality transport vehicles when exposed to agricultural conditions. Metal test coupons, inoculated with bacte...

Bacillus anthracis and other environmentally persistent pathogens pose a significant threat to human and environmental health. If contamination is spread over a wide area (e.g., resulting from a bioterrorism or biowarfare incident), readily deployable and scalable sample collecti...

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...

This study examined the washoff of Bacillus globigii (Bg) spores from concrete, asphalt, and grass surfaces by stormwater.  Bg is a nonpathogenic surrogate for Bacillus anthracis, which is a biological select agent. Areas (2.74 m x 7.62 m) of concrete, grass, and asphalt were ino...

Drinking water storage tanks serve several important functions, which include but are not limited to providing an adequate water supply in the case of firefighting emergencies, power outages, water main breaks, or other system failures. The water level elevation in storage tanks ...