Science Inventory

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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...

Seasonal hypoxia, or low dissolved oxygen, in Long Island Sound (LIS) has declined since the early 2000s due to management actions that reduced point source nitrogen loading. To further quantify and better understand drivers of changes in the spatial and temporal distribution dis...

Nitrogen management in Long Island Sound (LIS) has reduced N loading and the extent of hypoxia over the last 2 decades. To support communication around successful remediation of hypoxia and the remaining challenges of N management, we are analyzing 30 years of water quality data ...

We are currently developing a fine-resolution spatial stream network (SSN) model for the Penobscot River Basin in Maine using continuous temperature time series collected by members of the Maine Temperature Working Group.&nbsp; Stations for 455 sites have been snapped to the NHDP...

Onsite wastewater treatment systems are a major source of excess nutrients and co-pollutants in groundwater. The high density of septic systems in New England&rsquo;s coastal watersheds has degraded the quality of drinking and recreational freshwater resources and led to collapse...

Per- and polyfluoroalkyl substances (PFAS) are a diverse class of persistent contaminants associated with a variety of adverse effects and found in aquatic ecosystems worldwide. There is an urgent need for data to assess the ecological risk from the universe of PFAS. Therefore, w...

Per- and polyfluoroalkyl substances (PFAS) are widespread, persistent chemicals associated with adverse health effects. However, mechanistic pathways underlying toxicity and hazards to wildlife, particularly estuarine and marine fish, are not fully characterized. We investigated ...

Marine sediments are rich habitats for microbial communities and act as a sink for many environmental contaminants including plastic particles, which may fragment into nanoplastic (NP) particles (&lt;1 &micro;m). Plastics can be substrates for microbial growth, but less is known ...

The American Heart Association released a scientific statement describing the importance of housing on cardiovascular health and emphasized the impact of the broader physical and social environment. Increased ambient temperature due to climate change and lack of environmental enr...

The use of in vitro systems to model inhalation exposures has focused on using primary cells as they can recapitulate key features of the airway epithelium in vivo.&nbsp; For inhaled chemicals, achieving this goal has relied on using differentiated primary human bronchial epithel...

We demonstrated previously that, on a mass basis, mutagenicity associated with particulate matter (PM) from flaming smoke is greater than smoldering PM. &nbsp;This finding, however, is limited to fresh smoke emissions, which are different from the actual smoke (i.e., photochemica...

&nbsp; &nbsp; &nbsp; &nbsp; Research Ecologist Bob McKane with ORD-CPHEA-PESD will present a webinar on 5/15/2024 for EPA&rsquo;s Tools and Resources series on &ldquo;Prescribed Burning and Smoke Management Planning Tools &ndash; Flint Hills Case Study.&rdquo; This public webinar...

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...

The Regional Monitoring Networks (RMNs) are a collaborative, volunteer effort to collect comparable long-term monitoring data at targeted sites nationwide to detect changes over time. Six Northeast states have participated in the stream RMN since it was first piloted in the North...

Causal structural models are used to capture knowledge of a problem domain through framing potential events as random variables and connections as causal arcs. Moreover, the properties of causal structural models foster additional insights on causal and inferential interactions a...

EPA-ORD-CPHEA's Michael Pennino and Jana Compton were invited to present on groundwater nitrate at the EPA Region 5 State Water Directors Meeting on May 15, 2024.&nbsp; This meeting brings together EPA Region 5 state clean water and drinking water directors to discuss topics of c...

This Subproduct is a slide deck for an invited presentation at the Georgetown University Center for PFAS and Cancer (CPAC) Joint Virtual Symposium.&nbsp; Slide deck presents the results of our group's PFAS developmental toxicity mixture studies.&nbsp; This work demonstrates the d...

Identifying reliable positive and negative control compounds is integral to determining the sensitivity and specificity of chemical assays. Our laboratory screens chemicals for developmental neurotoxicity potential using assays that assess larval zebrafish locomotor behavior in r...

Combustion of mixed materials during open air burning of refuse and housefires produces emissions that worsen air and water quality and cause adverse health effects. The purpose of this study was to assess the irritant potential of extractable organic material of smoke condensate...

This study characterized Bacillus globigii (BG) as a Bacillus anthracis Sterne (BAS) surrogate for wastewater treatment-related studies of UV inactivation, adsorption onto powdered activated carbon (PAC), and bioaerosol emission. The inactivation of BG was faster than that of BAS...

Protein processing operations utilize large volumes of water for hair/hide/feather removal, carcass washing, chilling, trimming and cutting, cooking, cleaning and sanitation, etc. The generated wastewater is typically treated onsite and discharged to municipal wastewater treatmen...

Medical professionals are interested in using remote monitoring to identify at-risk populations, reduce outcome disparities, and provide timely interventions to vulnerable patients. We examined the effect of warm season weather conditions on the risk of ventricular tachycardia/ve...

Presentation for PIC 2024 meeting 74% of U.S. firefighters are reproductive age (20 &ndash; 49 y.o.; 2019) &bull; 92% of U.S. firefighters are male (2019) &bull; A decrease from 99% in the 1980s (Perroni et al. 2021, PLoS One) &bull; Male reproductive tract may be particularly se...

Invited presentation to SKIG AOP interest group to the SAAOP. Brief introduction to AOP-DB v.2 updates. Full presentation invited to follow at June meeting.

Distribution system nitrification is an important issue for water utilities that use chloramines as a secondary disinfectant. This presentation reviews the causes of nitrification and how to monitor, prevent, and react to nitrification events. Furthermore, an update on research n...