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Records 1 to 25 of 840
Chlorine and monochloramine disinfection of Legionella pneumophila colonizing copper and PVC drinking water biofilms (JOURNAL)
Building water systems (BWSs) promote the regrowth and survival of opportunistic pathogens, such as Legionella pneumophila, especially within biofilms (BFs), where most drinking water (DW) microbes reside. However, compared to their planktonic (PL) form, disinfection efficacy fo...
Sample Processing Method for Ricin Analysis (SUMMARY)
The Use of Hollow Fiber Dialysis Filters Operated in Axial Flow Mode for Recovery of Microorganisms in Large Volume Water Samples with High Loadings of Particulate Matter (JOURNAL)
The objective of this study was to evaluate axial flow hollow fiber ultrafiltration (HFUF) in the recovery of target organisms in large volumes of turbid water that would be similar to water encountered in the cleanup of a biologically contaminated area such as the B. anthracis c...
Review of decontamination technologies for Bacillus anthracis spore inactivation in building and outdoor environments (JOURNAL)
Although the military has been developing decontamination methods for their purposes for decades, research conducted or funded by nondefense government agencies with a focus on the decontamination of civilian facilities had been minimal prior to 2001. That changed following the i...
Inactivation of bacterial biothreat agents in water, a review (JOURNAL)
Exposure Pathways to High-Consequence Pathogens in the Wastewater Collection and Treatment Systems (PUBLISHED REPORT)
Report--Provides information and a screening tool to perform an exposure assessment for emerging pathogens in wastewater systems
Adsorption of Malathion onto Copper and Iron Surfaces Relevant to Water Infrastructure (JOURNAL)
Evaluation of Low-Tech Indoor Remediation Methods Following Wide Area Radiological/Nuclear Incidents (PUBLISHED REPORT)
Decontamination of Bacillus spores adhered to iron and cement-mortar drinking water infrastructure in a model system using disinfectants (JOURNAL)
Survey and Assessment of Fate and Transport Models for Use Following a Wide-Area Urban Release to Inform Mapping, Characterization, and Site Clearance (PUBLISHED REPORT)
If a terrorist event or natural disaster causes a wide area of land to be contaminated with chemical, biological, or radiological particulates, emergency responders need a rapid way to determine where to sample and decontaminate prior to clearing the area. A comprehensive stormwa...
Subject Matter Expert Panel Review of the Full-Scale Water Security Test Bed (WSTB) (PUBLISHED REPORT)
Decontamination of Materials Contaminated with Spores of Bacillus anthracis Ames and Vollum Strains Using Low Levels of Hydrogen Peroxide Vapor (PUBLISHED REPORT)
Report on the decontamination efficacy of low levels of hydrogen peroxide vapor (HPV) was evaluated on common building materials (glass, bare pine wood, carpet, painted wallboard paper, unpainted concrete, and ceiling tile) contaminated with Ba spores.
The effectiveness of disinfection and flushing procedures to prevent coliform persistence in aircraft water systems (JOURNAL)
Maintaining safe water on board commercial aircraft is critical to the safety of passengers and compliance with regulations. The conclusions from this study can help commercial air carriers deliver safe water by indicating that coliform bacteria are not persistent on aircraft plu...
Quantifying hydraulic and water quality uncertainty to inform sampling of drinking water distribution systems (JOURNAL)
Sampling of drinking water distribution systems is performed to satisfy regulatory requirements but also to respond to customer complaints or emergency situations. Water distribution system modeling techniques can be used to plan and inform sampling strategies; however, a high de...
Decontamination of Bacillus Spores from Drinking Water Infrastructure with Physical Removal (Pigging) (PUBLISHED REPORT)
This report summarizes the results of biological decontamination experiments performed at the WSTB focused on removing Bacillus globigii spores adhered to the inner surface of the 8-inch water pipe. B. globigii spores are a non-pathogenic surrogate for B. anthracis, which is the...
Modeling Rabbit Responses to Single and Multiple Aerosol Exposures of Bacillus anthracis Spores (HS 4.04.02 - 475) (JOURNAL)
Direct aqueous injection of the fluoroacetate anion in potable water for analysis by liquid chromatography tandem mass-spectrometry (JOURNAL)
Journal Article describes the analysis of sodium fluoroacetate by liquid chromatography/tandem mass spectrometry. Four different drinking waters contaminated with the target analyte were evaluated.
Alternative Fast Analysis Method for Cellulose Sponge Surface Sampling Wipes with Low Concentrations of Bacillus Spores (JOURNAL)
Environmental sampling is a critical component of the post decontamination verification process following a bioterrorism event. This journal article describes work performed to produce a less labor-intensive method for processing cellulose sponge-wipes used for sampling areas pot...
Evaluation of Exposure to Brevundimonas diminuta and Pseudomonas aeruginosa during Showering [HS7.44.02] (JOURNAL)
Impact of Sporicidal Fumigation with Methyl Bromide or Methyl Iodide on Electronic Equipment (JOURNAL)
The effect of sporicidal fumigation with methyl bromide or methyl iodide on the functionality of electronic equipment was evaluated using desktop computers as surrogates for valuable electronic equipment under target conditions of 200–250 mg/L fumigant for 48 hours at 24–30 °C an...
Material Compatibility for Historic Items Decontaminated with Gamma Irradiation (PUBLISHED REPORT)
Evaluation of Stormwater Detention Basins to Improve Water Quality and Enable Emergency Response During Wide-Area Contamination Incidents (PUBLISHED REPORT)
Field-scale, pilot-scale, and bench-scale tests were performed to evaluate the function of two innovative detention basin devices that can be quickly deployed to control stormwater contamination events within existing detention basin structures. The devices were designed with th...
The Feasibility of Developing a Physical Model Using Rapid Manufacturing Technologies by Referencing Remotely Sensed Data to Simulate Outdoor Environments (PUBLISHED REPORT)
This report was prepared to evaluate the feasibility of using rapid manufacturing technologies (i.e., computer numerical controlled (CNC) milling, printing) to develop three-dimensional (3D) physical models as surrogates for outdoor field experiments. These models have the potent...
Development of Laboratory Equipment and protocols for the Assessment of Rain, Water Wash-Down, and Channelized Flow for Removal of Spores on Urban Surfaces (PUBLISHED REPORT)
A large-scale outdoor biological disaster requires a better understanding of how rainfall and water-based decontamination measures would transport contaminants. Over the last few years, the United States Environmental Protection Agency’s (EPA’s) Homeland Security Research Program...
Wet-Vacuum-Based Surface Sampling Method for Chemical Agents (PUBLISHED REPORT)
This report is on the development of a wet-vacuum method to sample medium to large areas for chemicals. The purpose of this project was to provide responding agencies with information on the effectiveness of a wet-vacuum sampling approach for the collection of toxic industrial ch...