Science Inventory

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This presentation uses EPA&rsquo;s NEWR calculator to explore the environmental impact and cost implications of a range of log reduction target (LRT) sets, as laid out recently by the National Blue Ribbon Commission for Onsite Non-potable Water Systems. Results show that impacts ...

This presentation examines short-term Vapor Intrusion (VI) temporal variability affected by seasons in volatile organic compounds (VOCs) measured in indoor air. Samples were collected concurrently from two buildings, a residential style office building (1600sqft), and a larger co...

This dataset is from sampling of Duluth Harbor in summer/fall of 2021 as part of the Great Lakes Invasive Sentinel Sites Network, a collaboration with the Smithsonian Environmental Research Center. Comprehensive sampling was conducted with multiple sampling gear types to obtain a...

This report includes the results and interpretation of geophysical investigations to aid in the location, identification, and conceptual site model (CSM) development of the near surface groundwater and surface water hydrology of the Upper Cement Creek and California Gulch of the ...

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...

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

Subsurface contamination can migrate upward into overlying buildings, exposing the buildings&rsquo; inhabitants to contaminants that can cause detrimental health effects. This phenomenon is known as vapor intrusion (VI). When evaluating a building for VI, understand that seasonal...

Subsurface contamination can migrate upward into overlying buildings, exposing the buildings&rsquo; inhabitants to contaminants that can cause detrimental health effects. This phenomenon is known as vapor intrusion (VI). When evaluating a building for VI, one must understand that...

The Regional Monitoring Program for Water Quality in San Francisco Bay (RMP) uses a multi-faceted strategy for cost-effective emerging contaminant identification and monitoring prioritization to support management efforts. As part of this strategy, the RMP is adopting use of nove...

Nonliving organic matter, including organic carbon, in freshwater systems provides energy inputs to food webs and supports various ecosystem functions. Unusually high organic carbon levels can occur naturally in aquatic habitats such as wetlands and blackwater rivers and streams....

Background&nbsp;&nbsp;and Purpose: &nbsp; New approach methods (NAMs)&nbsp;, including high-throughput transcriptomics (HTTr) with TempO-Seq and high-throughput phenotypic profiling (HTPP) with Cell Painting, have been developed to broadly profile chemicals for effects on thousan...

Environmental surveillance data provide gold-standard information for informing regulatory decisions related to chemical pollution. However, these data are expensive and time consuming to generate. Strategies are needed for the selection of optimal sampling locations and measured...

Real-world emissions from modern wood heaters are poorly quantified and are known to be impacted by a range of uncontrolled factors (e.g., draft, elevation, meteorology, user preference and skill, fuel condition, etc). Recent reports have asserted that modern U.S. EPA certified w...

There is no standard sampling and analysis method for vapor phase per- and polyfluoroalkyl substances (PFAS) that can be routinely applied to soil gas, sewer/conduit gas, and indoor air samples. We have validated a thermal desorption GC/MS/MS method for the measurement of a set o...

There currently is no fish based bioassessment metric for evaluating St. Louis River estuary (SLRE) site level habitat quality and restoration effectiveness.&nbsp; A contributing factor is that adult and juvenile fishes generally have home ranges much larger than the scale of con...

Lithium (Li) is gaining interest in the drinking water community as it is listed on the U.S. Environmental Protection Agency&rsquo;s fifth Contaminant Candidate List (CCL 5), and its occurrence in drinking water is being quantified under the fifth Unregulated Contaminant Monitori...

This is an abstract for a poster presentation that will cover a thermal desorption tube- gas chromatography method developed to sample volatile per- and polyfluorinated alkyl substances in air and source emissions. Per- and polyfluoroalkyl substances (PFAS) are a class of manufac...

The goal of this study is to determine if there is an association between aerosolized particulate matter (PM) density, wind speed, temperature, humidity, soil-specific parameters, or other site-specific conditions and Coccidioides detection to better understand fungal spore dispe...

Freshwater mussels are among the most imperiled aquatic fauna on earth. In North America, once home to approximately 300 endemic mussels, over one-third of these species are presumed to be extinct or are considered critically impaired. Conservation and management of at-risk speci...

Understanding wetland carbon stores and dynamics are critical to managing global carbon flux. Non-floodplain wetlands (NFWs) are hydrologically dynamic and globally prevalent inland wetlands distal to fluvial flowpaths, lacustrine-fringing areas, and geomorphic floodplains; &gt;5...

Environmental DNA (eDNA) may supplement conventional methods for fish community assessment by measuring fish-specific DNA shed by the fish community in the water of a given ecosystem, enhancing rare species detection and reducing field effort. However, eDNA is not typically paire...

Currently there is not a standard sampling and analysis method for vapor phase per- and polyfluoroalkyl substances (PFAS) that can be routinely applied to soil gas, sewer/conduit gas, and indoor air samples. To study the potential for PFAS vapor intrusion, a method for the analys...

Background and objective:&nbsp; Noninvasive salivary biomarkers can be used to assess the cumulative subclinical health impacts of social and environmental stressors. We evaluated seven salivary biomarkers of neuroendocrine and immune functions and a group index of physiological ...

Poster describing our recent results using disability adjusted life years (DALYs) to compare the immediate risks from exposure to wastewater treated for non-potable end uses to the health impacts associated with the treatment systems.&nbsp;

Working with communities or other types of collaborators requires the use and application of qualitative information (e.g., Indigenous knowledge, aesthetics, cultural practices, lived experiences) in environmental actions. This presentation will share the results of a literature ...