Science Inventory

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Understanding vapor intrusion (VI) temporal variability is key for the design of sampling strategies intended to assess reasonable maximum exposure of indoor air concentrations of volatile organic compounds (VOCs) as well as risk evaluation and mitigation planning. VI temporal va...

Impervious surface cover increases peak flows and degrades stream health, contributing to a variety of hydrologic, water quality, and ecological symptoms, collectively known as the urban stream syndrome. Strategies to combat the urban stream syndrome often employ engineering appr...

Conventional mining-influenced water (MIW) treatment technologies are expensive to operate and maintain, require frequent labor, materials input, and sampling, and produce large quantities of treatment-generated solids that must be managed. In 2019, EPA&rsquo;s Office of Superfun...

Benthic rapid assessment tools are needed to close the gap between sample collection and analysis so managers can better evaluate ecological response to management actions and environmental conditions. Sediment profile imaging (SPI) captures the top centimeters of sediment in cro...

US EPA has previously published a decision support tool (River Basin Export Reduction Optimization Support Tool, RBEROST) populated with data for the Upper Connecticut River Basin to allow stakeholders to determine the least-cost management strategies to meet nitrogen and phospho...

US EPA has previously published a decision support tool (River Basin Export Reduction Optimization Support Tool, RBEROST) populated with data for the Upper Connecticut River Basin to allow stakeholders to determine the least-cost management strategies to meet nitrogen and phospho...

US EPA has previously published a decision support tool (River Basin Export Reduction Optimization Support Tool, RBEROST) populated with data for the Upper Connecticut River Basin to allow stakeholders to determine the least-cost management strategies to meet nitrogen and phospho...

This presentation will be given at Air &amp; Waste Management Association's The Science of PFAS Conference. It provides a general overview of Other Test Method 50, a recently released method for analyzing volatile fluorinated compounds from sources. The method's applicability, sa...

Marine mesoscale studies with sandworms (Alitta virens) were conducted to isolate important processes governing the exposure and bioaccumulation of polychlorinated biphenyls (PCBs) at contaminated sediment sites.&nbsp;Ex situ&nbsp;equilibrium sampling with silicone-coated jars, a...

The Sample Collection Plan (SCP) Template Tool for Addressing Radiochemical Analytes in Environmental Matrices is intended to provide a “ready-to-go” outline for creating a SCP in EPA-report format. The Tool provides a general description of the types of information and sections ...

Over the last 30 years, several models have been developed to predict bioaccumulation for assessing and managing the risks associated with contaminated sediment sites. These models include simple ratios of biota to sediment concentrations (i.e., biota-sediment accumulation factor...

Drinking water nitrate contamination is a significant economic and public health concern in The Great Plains, with few tested best practices for improving source water quality. This project seeks to establish a monitoring framework for quantifying the benefits of soil health prac...

The development of field-scale, in situ screening technologies is crucial for assessing aqueous film forming foam (AFFF) source zones at former fire training and storage sites, which are long-term sources of per- and polyfluoroalkyl substances (PFAS) contamination. Spectral induc...

Due to some Per and Polyfluoroalkyl substances (PFAS) having both hydrophilic and hydrophobic components on the same structure, they are often found at the interface between air and water. This behavior results in PFAS concentrating in the surface microlayer. When surface water i...

Long term monitoring using standardized repeated measures is an invaluable approach not only for early detection of non-native aquatic species (NAS), but also for understanding rates of invasion and for assessing the impacts of relevant changes to recipient systems (e.g. climate ...

Benthic harmful cyanobacteria blooms (HCBs) pose a significant threat to domestic animals, wildlife, and humans. They are a growing concern especially in the west. State, tribal, and local agencies need greater understanding of the risk posed by benthic HCBs. While The Interstate...

U.S. states, tribes, and local agencies need consistent approaches to characterize the relative risk posed by harmful benthic cyanobacteria proliferations and to inform mitigation practices. USEPA is addressing this need with multi-year, multi-site field research and controlled e...

This presentation will be given at the 45th Conference for Stationary Source Sampling and Analysis for Air Pollutants. It will be included in the &quot;EPA Highlights&quot; session where EPA staff will provide a summary of the past year's key developments in air emissions measure...

Unmanned aircraft systems (UAS, or drones) have been used to characterize emissions from prescribed forest and grassland fires.&nbsp;

The analysis of contaminants of emerging concern (CECs) has been an ongoing priority due to their potential for adverse effects on environmental and human health. Wastewater is a source for many CECs, and surface waters that receive wastewater discharge often serve as source wate...

This subproduct contains text and pictures for an update/extension of the EPA Emergency Response Research's Analysis for Coastal Operational Resiliency (AnCOR) webpage (https://www.epa.gov/emergency-response-research/analysis-coastal-operational-resiliency). It describes the wide...

Background/Objectives: Contaminated sediments are present at 36% of active National Priority List sites in the United States, and remediation of these sediments to reduce human health or ecological risk can be costly and complex. Over the last few decades, passive sampling device...

Hester-Dendy (HD) multi-plate samplers have been widely used by state and federal government agencies for bioassessment of water quality through use of macroinvertebrate community data. To help guide remediation and restoration efforts at the Niagara River Great Lakes Area of Con...

Lead corrosion assessment tools (i.e., desktop studies, bench top studies, pilot studies, diagnostic drinking water sampling for metals and pipe scale analysis) are used for fundamental or applied research by academic groups, as well as for voluntary operational improvements or f...

Background Hepatitis A virus (HAV) is a non-envelope, RNA virus that is transmitted through the fecal-oral route by direct contact or ingestion of contaminated food or water. HAV infections typically are diagnosed with the use of invasive and expensive serological assays.&nbsp;In...