Office of Research and Development Publications

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&nbsp; Residential lead (Pb) exposure is of critical concern to families globally as Pb promotes severe neurological effects in children, especially those less than 5 years old, and no blood lead level is deemed safe by the US Center for Disease Control. House dust and soils ar...

Fertilizer-intensive agriculture leads to emissions of reactive nitrogen (Nr), posing threats to climate via nitrous oxide (N2O) and to air quality and human health via nitric oxide (NO) and ammonia (NH3) that form ozone and particulate matter (PM) downwind. Adding nitrification ...

To present to the PTF Lead (Pb) SubCommitttee regarding EPA/ORD's Lead Service Line Identification technical assistance effort.

Numerous qPCR-based methods are available to estimate the concentration of fecal pollution sources in surface waters. However, qPCR fecal source identification data sets often include a high proportion of non-detections (reactions failing to attain a prespecified minimal signal i...

The relative role of natural and anthropogenic drivers on freshwater biodiversity across different aquatic ecosystem types is not well understood. The U.S. Environmental Protection Agency&rsquo;s National Aquatic Surveys (NARS) offers a unique opportunity to compare lentic and lo...

Wildland fire smoke impacts millions of people in the United States every year. The EPA&rsquo;s Office of Research and Development is addressing our increasingly smokey future with state-of-the-art instrumentation in a mobile air quality laboratory based at the PESD lab in Corval...

INTRODUCTION: Coccidioidomycosis is an emerging fungal infection caused by inhalation of airborne spores of the Coccidioides genus. While Coccidioides immitis has been detected in soils across California, successful recovery of C. immitis from air samples has so far been limited ...

Quantifying the influence of environmental factors on species distributions can elucidate their ecological requirements and potential response to anthropogenic disturbance. Single species distribution models are commonly used to quantify taxon-environment relationships but do not...

Presentation on ORD Service Area Boundaries for the EPA GIS Workshop Meeting, to be presented on May 1, 2024.&nbsp; Presentation will showcase how CAISB is using advanced methods in spatial machine learning to understand which systems Americans source their water from.

This research builds upon successful StRAP 3 (Appendix B) and RARE project tests of ORD's VELMA ecohydrology model to identify urban GI solutions for reducing stormwater contaminant loads impacting ESA-listed salmonids in the Puget Sound National Estuary. For example, recent resu...

Long-term monitoring datasets provide valuable opportunities to identify aquatic ecosystem responses to disturbance at broad spatial extents. The Aquatic and Riparian Effectiveness Monitoring Program (AREMP) is unique in this regard because the program re-surveys the same 1411 st...

EPA-ORD-CPHEA's Michael Pennino, Jana Compton and Robert Sabo were invited to present on groundwater nitrate at joint meeting with USDA-NRCS on May 22, 2024.&nbsp; This meeting brings together the USDA Agricultural Water Quality National Team together with US EPA scientists and s...

As the world's reservoirs experience drawdowns from reduced precipitation and increased water demand, expanses of sediment are being exposed and colonized by both native and non-native vegetation. Within Lake Powell, the second largest reservoir in the U.S., drought in the Colora...

Potential environmental impacts of oil spills are a concern for the Canadian public and the oil industry. Optimizing methods to treat residual oil that remains after an oil spill cleanup and to assess the potential impacts of residual oil in impacted freshwater systems are both h...

Standard ecological risk assessment practices often rely on larval and juvenile fish toxicity data as representative of the amphibian aquatic stage. Although empirical evidence suggests fish early life stage tests frequently are sufficiently sensitive to protect larval amphibians...

In the northern Gulf of Mexico, nutrients from upstream agricultural fertilization and river runoff are delivered to the Louisiana Continental Shelf (LCS) via the Mississippi-Atchafalaya river basin. This increased nutrient loading stimulates a phytoplankton bloom; as the resulti...

Coastal watersheds have become increasingly urbanized resulting in declines in ecosystem goods and services (EGS) to community beneficiaries. Urbanization includes increases in impervious surface, decreases in access to greenspace, and declines in both air and water quality. The ...

Accounting for intraspecific and interspecific competition when assessing the effects of chemical and nonchemical stressors is an important uncertainty in ecological risk assessments. We developed novel projection of interspecific competition (PIC) matrices that allow for analysi...

In this work, we assess the techno-economic and social performance of preventing and controlling phosphorus releases from municipal wastewater effluents in local communities. This multicriteria assessment framework accounts for the effects of the economies of scale and the popula...

Xenobiotic metabolism is a key consideration in evaluating the hazards and risks posed by environmental chemicals. A number of software tools exist that are capable of simulating metabolites, but each reports its predictions in a different format and with varying levels of detail...

The FEGS Scoping Tool informs the early stage of decision-making, when decision makers are aware of a decision they need to make, but before any actions are taken. The tool helps users identify and prioritize stakeholders, beneficiaries, and environmental attributes (i.e., aspect...

Pages 150-167 of Lake Michigan 2020 Report Lake Michigan has undergone substantial biological change in the lower food web, as evidenced by lake-wide changes in primary productivity (Stadig et al., 2020), zooplankton abundance and composition (Barbiero et al., 2019), fish recruit...

During the past decade cheminformatics tools at the USEPA have resulted in a data and chemistry software infrastructure based on the underlying DSSTox database and a series of publicly available web-based applications. The primary application delivering these data to the communit...

This software package will build on an existing prototype package to provide standardized and flexible data science workflows for pipelining and databasing HTTr results using open source software tools, including Docker containers to ensure reproducibility and increase the flexib...

On 5 January, the environmental science world lost a giant as Ronald Atlee Hites passed away at his home in Bloomington, Indiana. Ron was born in 1942 in Michigan. He received his Bachelor&rsquo;s degree in chemistry from Oakland University in 1964 and his PhD in analytical chemi...