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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 ...

In volcanic mountains, complex subsurface architecture can have a significant impact on subsurface water dynamics. Despite this, the degree to which geomorphic landscape features (e.g., colluvial deposits, glacial features, and active earthflows) influence subsurface water dynami...

Storm sewer system outfall discharges can be a source of human sewage potentially harboring clinically relevant antibiotic resistance (AR) bacteria and their genes. &nbsp;These drainage networks primarily collect and discharge untreated stormwater from rain events (&lsquo;wet&rsq...

The Tap Water Analysis Project was a multi-year study that used targeted and non-targeted analysis (NTA) methods to survey chemical contaminants in drinking water from five regions across the state of California. For the NTA portion of the project, activated carbon point-of-use (...

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...

How does the extent and configuration of landscape metrics and onsite stressors interact with Euclidean and stream network distances to explain variation in stream condition index in a river basin? I am using data from Virginia Department of Environmental Quality's Probabilistic ...

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...

This presentation describes the development of a decision support tool, the Priority Response Environmental Screening Tool (PRESTO), that was designed to provide a framework for analyzing geospatial information. The objective of a PRESTO analysis is to assist the U.S. Environment...

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...

The U.S. Environmental Protection Agency (EPA) is conducting a national stated preference study that seeks to quantify the non-use (existence) portion of total economic value of water quality policies across the conterminous US (CONUS). Previous work identified the ratio of obser...

Sediments are a major sink for microplastics (MP) and while methods for extracting and identifying MP in sediment have improved in recent years, these methods continue to be time and cost intensive and scientifically rigorous. The cost of specialized identification instrumentatio...

Spatially explicit&nbsp;ecological risk assessment&nbsp;(ERA) requires estimating the overlap between chemical and receptor distribution to evaluate the potential impacts of exposure on&nbsp;nontarget organisms. Pesticide use estimation at field level is prone to error due to inc...

Background Exposure to lead (Pb), arsenic (As) and copper (Cu) may cause significant health issues including harmful neurological effects, cancer or organ damage. Determination of human exposure-relevant concentrations of these metal(loids) in drinking water, therefore, is critic...