<< Previous

Next >>

The use of air sensors has grown exponentially for a variety of applications; however it is widely known that sensor data quality is highly variable. There are currently no standard testing protocols, metrics, or targets to evaluate air sensor performance uniformly. It is recogni...

The Naval Surface Warfare Center, Indian Head Division (NSWC IHD) uses a thermal method to decontaminate items that are potentially contaminated with trace amounts of energetics. These materials are termed “material potentially presenting an explosive hazard” or MPPEH. In their c...

During 2013-2017, external groups published analyses suggesting that mobile source nitrogen oxide (NOx) emission estimates developed by the U.S. Environmental Protection Agency (U.S. EPA) were too high by a factor of up to two. From 2015 to 2020, a cross-EPA workgroup met to coor...

In January 2020, the Wildland Fire Leadership Council (WFLC) requested that EPA, in collaboration with scientific staff in the U.S. Forest Service (USFS), the Department of the Interior (DOI) and the National Institute of Standards and Technology (NIST), conduct an assessment ...

The U.S. Environmental Protection Agency (EPA) created this document to help existing and planned school communities identify strategies for reducing traffic-related pollution exposure at schools located downwind from heavily traveled roadways (such as highways), along corridors ...

Inland ports are vulnerable to damage or disruptions from extreme high and low water levels. Extreme water levels can cause periods of flooding or drought and may restrict or alter port operations and freight movement. Those vulnerabilities affect not only the port itself, but al...

In the U.S., fugitive emissions (leaks) of VOC and HAPs from process components have traditionally been managed using scheduled manual inspection of individual components with U.S. EPA Method 21 (M21) as part of facility LDAR programs. Although sensitive and flexible, M21 is reso...

The assessment of environmental exposures for human health is an advancing field, characterized by multiple new methodologic and analytic approaches. The difficulties in examining the many broad-based factors impacting human health outcomes are increasingly recognized, with expos...

The use of air sensors has grown exponentially for a variety of applications; however it is widely known that sensor data quality is highly variable. There are currently no standard testing protocols, metrics, or targets to evaluate air sensor performance uniformly. It is recogni...

This report characterizes the thermal performance and air pollutant emissions from a pellet-fired hydronic heater (PBHH) burning both premium hardwood and switchgrass fuels. The PBHH was operated under three load conditions: 25% (minimum); 100%; and during a simulated load profil...

A better estimate of overall environmental quality is needed to improve our understanding of the relationship between environmental conditions and human health. Described in this report is the effort to construct an environmental quality index (EQI) representing multiple domains ...

A better estimate of overall environmental quality is needed to improve our understanding of the relationship between environmental conditions and human health. Described in this report is the effort to construct an environmental quality index (EQI) representing multiple domains ...

This report focuses on the methodology for estimating growth in NR engine populations as used in the MOVES201X-NONROAD emission inventory model. MOVES NR growth rates start with base year engine populations and estimate growth in the populations of NR engines, while applying cons...

Ultraviolet (UV) Photometry-based ambient Federal Equivalent Method (FEM) ozone (O3) analyzers can experience significant water vapor interferences resulting in increased measurement noise, biased concentration measurements, and slow instrument response times. The magnitude and d...

The Watershed Management Optimization Support Tool (WMOST) was developed by the United States Environmental Protection Agency (US EPA) to facilitate integrated water resources management. The new Benefits Module for WMOST enables stakeholders to calculate the value of additional ...

Atmospheric dispersion modeling is one tool that can be used for effective emergency preparation or response from hazardous chemical, biological, radiological, nuclear, and explosive (CBRNe) releases, especially in urban areas where population densities are high and wind flow bec...

This report “National Water Infrastructure Adaptation Assessment: Part II, Smart Urban Designer (SUD) and Case Studies” is a part of the research effort undertaken by the EPA Office of Research and Development (ORD) Water Systems Division (WSD) on national water infrastructure as...

The SPECIATE Data Browser is an easy-to-use dashboard that provides access to the data in EPA's SPECIATE database through a web interface. The SPECIATE Data Browser allows you to browse information, customize charts and tables, as well as select and download the data of interest....

Over the past few years, concerns have been raised by regional environmental stakeholders regarding air quality in Maricopa County, AZ with particular attention to the presence of particulate matter and black carbon due the use of wood burning fireplaces and backyard fire pits in...

The AirMapper is a portable air sensor designed to be used by researchers and citizen scientists to record. The AirMapper is a small instrument case that can be carried or attached to a bicycle (not an EPA supplied item), and includes rechargeable battery power, global positioni...

The Fertilizer Emission Scenario Tool for CMAQ (FEST-C v1.4) is a Java-based interface system that facilitates the integration of agriculture, atmosphere, and hydrology simulations at large scales through the current release of the Spatial Allocator (SA v4.3.2) Raster Tools syste...

EPA/ORD developed City-based Optimization Model for Energy Technologies (COMET) which is designed to examine energy consumption and management scenarios under various environmental policy scenarios implemented at city- and state-level. Initial application of the COMET is piloted ...

This report describes the state of the science with respect to total Nr deposition budgets in the United States and the research needed to improve these budgets from both a measurement and modeling perspective. The document is intended to serve as a roadmap for research activiti...

This report covers wood stove testing carried out by ORD during May 2018 to June 2018. Testing and analysis was completed as of October 2018. Three stoves of varying design and certification level were tested using the Black Carbon Protocol developed by the International Cryosphe...

RETIGO is a web based tool that allows the integration of environmental data for visualization and analysis. This tool was developed by EPA and is available for free. RETIGO allows the user to combine existing (Agency, State or other sources) environmental and meteorological da...