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This Snoqualmie Tribe&ndash;EPA collaborative modeling project revolved around salmon habitat restoration activities in the Tolt River Floodplain at its confluence with the Snoqualmie River about twenty miles east of Seattle, Washington. We used EPA's VELMA ecohydrological model ...

A public water system provides water for human consumption through pipes or other constructed conveyances to at least 15 service connections or serves an average of at least 25 people for at least 60 days a year. Community water system (CWS) service area boundaries describe the g...

The Decontamination Strategy and Technology Selection Tool (DeconST) provides a comprehensive, data-rich framework for considering decontamination options and facilitating the development of facility-specific, efficient, and effective remediation approaches following attack or co...

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 ...

EPA Office of Research and Development researchers coordinated with Partners to implement vessel-based field sampling for the Lake Huron 2022 Cooperative Science and Monitoring Initiative (CSMI). Specifically, a lake-wide survey design was deployed to examine the spatial and temp...

The “Technical Documentation for the Framework for Evaluating Damages and Impacts” document provides technical documentation of a framework used to analyze future climate change-related impacts to the United States, projected to occur across multiple impact sector categories, geo...

EPA received manufacturer requests to conduct risk evaluations for DIDP and DINP, both as categories of chemical substances, and subsequently granted and initiated risk evaluations for both of them. EPA is submitting the draft risk evaluation of DIDP, draft physical chemical, fat...

On December 14, 2023, EPA released the Draft Risk Evaluation for TCEP and associated supporting documents for public comment and submitted the draft risk evaluation for letter peer review. EPA has used the best available science to preliminarily determine that this chemical pose...

EPA is submitting the draft risk evaluation of 1,1-dichloroethane, draft human health hazard technical support document of 1,2-dichloroethane, and associated supporting documents to the SACC for peer review, along with the public comments received.

Like many coastal communities, the City of Crisfield, Maryland is experiencing increased inundation due to sea level rise, land subsidence, and intensifying storms. The U.S. EPA Office of Research and Development (ORD) has partnered with the Crisfield community to explore the pot...

This user guide provides instruction on how to use BMDS but is not intended to address or replace EPA BMD guidance. However, every attempt has been made to make this software consistent with EPA guidance, including the Risk Assessment Forum&rsquo;s (RAF) Benchmark Dose Technical ...

Under Section 8006 of the Consolidated Appropriations Act, 2018, CDC/ATSDR was required to conduct statistically based biomonitoring exposure assessments (EAs) at &ldquo;no less than eight current or former domestic military installations&rdquo; that have or have had documented e...

The Leaching Environmental Assessment Framework (LEAF) methods provide data required to evaluate treatment options for contaminated soil, assess beneficial use of industrial by-products such as coal fly ash, slag, and flue-gas desulfurization gypsum, and support land application ...

Decision Analysis for a Sustainable Environment, Economy and Society (DASEES) is a web application that facilitates a structured decision making (SDM) approach for decision problems. SDM is a group decision making process (Gregory et al, 2012) that aims to 1) develop common under...

This is a multidisciplinary scientific report that details how future operations of Glen Canyon Dam will impact the biophysical landscape of Grand Canyon and the Colorado River. The report is being prepared by the USGS and delivered to the U.S. Bureau of Reclamation. The USGS is ...

For more than 100 years, the ordinary high water mark (OHWM) has been used to define water boundaries in a number of contexts in the United States. This Special Report summarizes the scientific literature pertaining to the indicators used to identify the OHWM in fluvial systems, ...

Cosm studies examining the toxicity of atrazine to aquatic plant communities are a significant part of the process to estimate the concentration equivalent-level of concern (CE–LOC). Accordingly, from 2002 to 2016, the EPA considered over 70 cosm studies obtained from the open li...

This product will describe for the Regions and Program Office a conceptual framework to facilitate the storage and exchange of construction material. Construction, deconstruction, renovation, demolition, and infrastructure projects provide a significant opportunity to promote the...

This report presents the results of the third National Wetland Condition Assessment. Data were collected in 2021 and a small amount in 2022 as a result of COVID delays.

When an environmental catastrophe resulting in contamination occurs, whether from intentional incident such as a terrorist attack or an unintentional incident such as an industrial spill, emergency responders and decision-makers need timely and accurate data. This need for data c...

This is a life cycle assessment (LCA) and life cycle cost analysis (LCCA) case study that estimates the environmental impact and cost of an existing indirect potable reuse (IPR) water system in Gwinnett County, Georgia, compared to four hypothetical direct potable reuse (DPR) sce...

In the field of environmental sustainability assessment, there are different integrated metrics used to quantify the total resource use and environmental impacts.  In a resource-constrained world, it is essential to quantify the environmental support that these resources provide,...

DASEES-Decision Analysis for a Sustainable Environment, Economy, and Society-is a general decision consequence analysis application that integrates socio-economic and environmental impacts from proposed actions within a preference structure for the evaluation of alternative optio...

This data report summarizes the physical-chemical properties, aquatic toxicity, and dispersant effectiveness of Bryan Mound Crude (BMC) oil. BMC has been selected as a new reference oil for the National Oil and Hazardous Substances Pollution Contingency Plan Product Schedule (NCP...

To evaluate the tidal restriction associated with the abandoned I-95 embankment which crosses the width of Rumney Marsh, located in Revere and Saugus, Massachusetts, EPA undertook a series of investigations starting with a depth sounding investigation using GPS and Depth Gage ins...