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Agricultural best management practices/conservation practices (ag BMPs/ACPs) have been widely implemented for nonpoint source pollution control. However, through a Region 10 R2P2 project, we have identified two critical knowledge gaps that limit broader adoption of ACPs in the Pa...

While SWMM has arguably played a pivotal role in pollution control in collection systems since its introduction, traditional applications using the model have been relatively static. They typically involve calibrating and validating SWMM models with data collected and curated for...

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...

Climate change has created the need for innovate methods for the management of groundwater and the augmentation of groundwater supplies in areas that are susceptible to drought as well as other climate related problems such as saltwater intrusion. This will create an enhanced dep...

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...

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...

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...

This is a presentation to students at UC to familiarize them with the basics of EPA's Stormwater Management Model. I will give one presentation over two days. One day we will just do demonstrations of SWMM without any slides and the second day we will take a deep dive into SWMM a...

The EPA’s Office of Research and Development constructed a permeable pavement demonstration site at the Edison Environmental Center, NJ in 2009. Infiltration testing of three original permeable parking rows from December 2009 through August 2012 indicated that clogging occurred f...

In urban systems, a wide variety of processes, including increasing impervious surface cover, road salt application, sewage leaks, and weathering of the built environment, contribute to novel chemical cocktails that are comprised of metals, salts, nutrients, and organic matter. D...

Bioinfiltration units were constructed at USEPA’s Edison Environmental Center to evaluate watershed to surface runoff ratio for sizing of green infrastructure controls. Three sizes of hydraulically isolated units were tested in duplicate with changes in aspect ratio of length fro...

In urban systems, a wide variety of processes, including increasing impervious surface cover, road salt application, sewage leaks, and weathering of the built environment, contribute to novel chemical cocktails that are made up of metals, salts, nutrients, and organic matter. Due...

Combined sewer overflow events (CSOs) often occur in urban areas due to heavy precipitation, which is expected to occur more frequently and at higher intensity due to climate change. CSOs can negatively impact wildlife, degrade recreational spaces, increase water nutrient loads l...

Ultraviolet (UV) filters have recently become contaminants of emerging concern due to their global detection in seawater, sediments, and biota. These compounds are ubiquitously used in personal care products to prevent UV spectra infiltration, as well as in commercial products to...

This work will involve a presentation to the Tampa Bay Stormwater Management Public Education and Training Committee on the U.S. EPA's National Stormwater Calculator(SWC). This presentation will focus on describing the conceptual model underpinning SWC, capabilities of the calcul...

The U.S. Environmental Protection Agency (EPA) is conducting a national stated preference study that aims to quantify the total economic value (human use and existence value) of water quality policies across the conterminous US (CONUS). Previous work identified the ratio of obser...

Climate change has created the need for increased and innovate methods for the management groundwater and augmentation of groundwater supplies in areas that are susceptible to drought as well as other climate related problems such as saltwater intrusion. This will create an enhan...

Urban areas are built environments containing substantial amounts of impervious surfaces (e.g., streets, sidewalks, roof tops).  These areas often include elaborately engineered drainage networks designed to collect, transport, and discharge untreated stormwater into local s...

Tributary phosphorus (P) loads are one of the main drivers of eutrophication problems in freshwater lakes. Being able to predict P loads can aid in understanding subsequent load patterns and elucidate potential degraded water quality conditions in downstream surface waters. We de...

The U.S. Environmental Protection Agency (EPA) is conducting a national stated preference study that seeks to quantify the non-use (existence) portion of total economic value of water quality policies across the conterminous US (CONUS). Previous work identified the ratio of obser...

Measuring soil fauna in stormwater green infrastructure Abstract Stormwater controls in urban environments that use plants are being promoted as green infrastructure. To better understand these controls and relationship to the environment, soil fauna extraction was performed o...

This report summarizes efforts to detect contamination from rainfall events using online water quality sensors. Stormwater has long been an area of concern when it comes to contaminant monitoring and potential remediation. Combined Sewer overflow (CSO) systems can collect rainwat...

Sub-product reports the evaluation and development of sampling extraction and processing procedures for difficult matrices samples. Such samples may contain high organic and environmental material, which will be challenging to process and analyze using the existing bio agent samp...

Nature-based solutions are systems that use natural processes to improve sustainability. Green roofs and water quality wetlands are two examples of nature-based solutions that help to alleviate the negative effects of urbanization and agriculture, respectively. However, the full ...

Stormwater controls in urban environments that use plants are being promoted as green infrastructure. To better understand these controls and relationship to the environment, soil fauna extraction was performed on a variety of stormwater controls from various urban locations incl...