Science Inventory

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Taxonomic data are the foundation of bioassessment and much basic and applied research. Difficulty in morphological species identification, evolving and varying taxon concepts, and nomenclatural changes can lead to significant inconsistencies in taxonomic datasets across analysts...

These slides introduce EPA ORD's Living Shorelines public education session for the community of Crisfield, MD, as part of co-development of research on nature-based strategies for coastal resilience. The goal is to help build knowledge capacity around living shoreline functional...

Freshwater ecosystems are exceptionally rich in biodiversity and provide essential benefts to people. Yet they are disproportionately threatened compared to terrestrial and marine systems and remain underrepresented in the scenarios and models used for global environmental assess...

Analytical methods, specifically those focused on the identification of chemicals by liquid and gas chromatography mass spectrometry (LC/MS and GC/MS), are key approaches supporting targeted and non-targeted environmental analysis. Different chemicals and chemical classes are ame...

In recent years several OECD test guidelines have been updated and some will be updated shortly with the requirement to measure thyroid hormone levels in the blood of mammalian laboratory species. There is, however, an imperative need for clarification and guidance regarding the ...

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Introduction (120/120): The US EPA is developing new approach methodologies (NAMS) to rapidly evaluate thousands of data-poor chemicals for human health hazards. These NAMs include&nbsp;in vitro exposures to investigate chemical metabolism in novel cell systems to inform hazard a...

Poly- and perfluoroalkyl substances (PFAS) are a large class of halogenated organic compounds (HOCs, also called organohalogens) utilized in a variety of industrial applications. Despite their widespread use in bulk quantities, significant concerns have been raised regarding thei...

During the past century, a vast number of organic chemicals have been manufactured and used in industrial, agricultural, public health, consumer products, and other applications. The widespread use in bulk quantities of halogenated organic chemicals (HOCs; also called as Organoha...

Halogenated organic compounds (HOCs) are long-lived toxic compounds and are of major concern for ecosystem and health. The use and manufacture of several HOCs is banned or phased out in most countries, but some HOCs are still being used in several countries. The levels of certain...

Aquatic ecosystem resilience to wildfire can vary widely depending on the characteristics of fire and the spatial context of where a fire takes place. Researchers at EPA&rsquo;s Office of Research and Development are collaborating with the US Forest Service, and Oregon State Univ...

Presentation about research using trail cameras as input data to a neural network machine learning model to inform on streamflow.

Ricin is a highly toxic protein, capable of inhibiting protein synthesis within cells, and is produced from the beans of the Ricinus communis (castor bean) plant. Numerous recent incidents involving ricin have occurred, many in the form of mailed letters resulting in both buildin...

Presentation for the Clean Water Act 303(d) training workshop that discusses lessons from data collection at stream and lake Regional Monitoring Network sites. The presentation also covers novel monitoring approaches using trail cameras.

The effect of wildfire on aquatic habitat over time is not well understood, especially in the Pacific Northwest, and relies on the collection of ongoing data over long time periods. In Western Washington, Oregon, and Northern California, the Aquatic and Riparian Effectiveness Mon...

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...

Legionella pneumophila (Lp) is an opportunistic pathogen that causes respiratory infections primarily through inhalation of contaminated aerosols. Lp can colonize premise plumbing systems due to favorable growth conditions found within those environments (e.g. lower disinfectant ...

In this LifeNet Health webinar, Dr. Deisenroth introduces an advanced human in vitro 3D thyroid microtissue model designed to evaluate thyroid hormone disruption, addressing current challenges with existing models. He will discuss the US EPA Endocrine Disruptor Screening Program’...

Background and Purpose Organophosphorus flame retardants (OPFRs) are abundant and persistent in the environment due to their extensive use in industrial processes and products. In vivo and in vitro studies suggest that OPFRs may cause adverse health effects. Additionally, their s...

Analytical methods can vary in nature from detailed regulatory methods to more summary in nature. Regulatory method documents can include details of analytes which can be studied, supported matrices, reagents, methodological details, statistical performance, interlaboratory valid...

This summary provides an overview of the Cleaner Indoor Air During Wildfires Challenge: Phase 2 results. This challenge was initiated through a collaborative interagency effort to bring affordable clean air to communities impacted by wildfire smoke. In Phase 1 of the challenge, s...

The Equitable Resilience Builder (ERB) is a downloadable application that for enhancing community engagement and equity in resilience planning. The tool provides guidance and activities for assessing community resilience needs and identifying actions. Activities include network m...

Introduction The Integrated Risk Information System (IRIS) assessment for trichloroethylene (TCE) found that human data were sufficient to support dose-response modeling and to develop an inhalation unit risk (IUR) for renal cell carcinoma (RCC). However, human and rodent data su...

The World Health Organization (WHO) assesses potential health risks of dioxin-like compounds using Toxic Equivalency Factors (TEFs). This study systematically updated the relative potency (REP) database underlying the 2005 WHO TEFs and applied advanced methods for quantitative in...

Although the offshore water of Lake Michigan has been below the Great Lakes Water Quality Agreement (GLWQA) total phosphorus (TP) spring target concentration of 7 &micro;g L&minus;1&nbsp;for several decades, higher TP concentrations occur in the nearshore, contributing to the res...