Science Inventory

Despite converting to green and electric sources of power, motorized transportation remains dependent upon conventional synthetic rubber tires for operation. Global dependence upon tires produced from natural rubber and petroleum-based compounds, including plastics, represents a ...

With the declining tailpipe emissions from the US and worldwide motor vehicle fleet, impacts of tire and brake wear are an increasingly important area of interest.  Recent research has shown the compound 6PPD used in tires as an anti-degradation chemical reacts with ozone to...

Background and Purpose The US-EPA first delivered the CompTox Chemicals Dashboard (https://comptox.epa.gov/dashboard) to the community in 2016 and it has become one of the definitive online resources for sourcing chemical toxicity data. Used by thousands of scientists a day, the ...

Coho salmon (Oncorhynchus kisutch), are highly sensitive to  6PPD-quinone (6PPD-q), a transformation product of the ubiquitously used tire rubber antiozonant 6PPD and found in stormwater runoff [1, 2]. Details of the hydrological and biogeochemical processes controlling spat...

With the declining tailpipe emissions from the US and worldwide motor vehicle fleet, impacts of tire and brake wear are an increasingly important area of interest.  Recent research has shown the compound 6PPD used in tires as an anti-degradation chemical reacts with ozone to...

With the declining tailpipe emissions from the US and worldwide motor vehicle fleet, impacts of tire and brake wear are an increasingly important area of interest.  Recent research has shown the compound 6PPD used in tires as an anti-degradation chemical reacts with ozone to...

6ppd-quinone has been identified as highly toxic to coho salmon and potentially other species. It is a breakdown product of 6ppd, an additive incorporated in rubber tires to help prevent cracking and degrading when exposed to oxygen, ozone, and temperature fluctuations. 6ppd-quin...

Modeling large-scale hydrological impacts brought about by site-level green and gray stormwater remediation actions is difficult because urbanized areas are extremely complex dynamic landscapes that include engineered features that, by design, expedite urban runoff to streams, ri...

An abstract for the Air and Waste Management Association's Air Quality Measurements Method and Technology Conference. The proposed talk will discuss progress on the above Primary Research Project. 

This presentation will focus on how to understand and address contaminant sources from road wear particles.

ROCS-NET presentation presented held at Corvallis OR ORD lab on October 18th and November 2nd.

Abstract: Per- and polyfluoroalkyl substances (PFAS) are a group of man-made chemicals that includes PFOA, PFOS, GenX, and many other chemicals. PFAS have been manufactured and used in a variety of industries since the 1940s. PFAS are widely used, long lasting chemicals, componen...

Visualizing Ecosystem Land Management Assessments (VELMA) is an ecohydrology model being leveraged in a recently-initiated effort to identify practical, proactive watershed restoration strategies that can be initiated now to lessen long-term impacts of climate change on Puget Sou...

Visualizing Ecosystem Land Management Assessments (VELMA) is an ecohydrology model being leveraged in a recently initiated effort to identify practical, proactive watershed restoration strategies that can be initiated now to lessen long-term impacts of climate change on Puget Sou...

Presentation to the National EPA Tribal Science Council, Fall 2022 Face-to-Face Meeting December 2022  

In the last few years, the world of aquatic toxicology has set its eyes on the chemicals N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) and its transformation product chemical N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine-quinone (6PPD-quinone) present in urban ru...

Proposed high-throughput methods for chemical hazard evaluation at the United States Environmental Protection Agency emphasize the use of human-derived cells. To expand the applicability of these high-throughput methods to ecological hazard assessment, a previously developed high...

The University of Washington Tacoma is facilitating ten scientific workshops over the next year to bring together for utilities, environmental community-based organizations, scientists, state and federal agencies, and the Tribes to discuss technical uncertainties related to terre...

 This presentation focuses on Puget Sound applications of the U.S. EPA’s VELMA ecohydrological model for identifying watershed BMPs for reducing various pollutants impacting freshwater and marine water quality endpoints of concern. The presentation is one of six workshop presenta...

This presentation focuses on applications of the U.S. EPA’s VELMA ecohydrological model for assessing the effectiveness green and gray infrastructure improvements for reducing stormwater contaminant loads to Seattle’s Longfellow Creek. This creek, like many other urban creeks dra...

<p>EPA announced the release of VELMA 2.1 Model and accompanying supplemental user's guide (Apr 2022) on the EPA website. EPA's VELMA tool helps assessor's model effective decisions for a wide array of environmental issues. It is a spatially explicit ecohydrological watershed mod...

·         Transport of materials from the landscape controls nearshore water quality in most estuarine and coastal ecosystems, including Puget Sound. A prevailing assumption is that nearshore and coastal water quality can be improved through effective land use policies designed t...