Archive | December, 2015

President Obama Signs National Microbead Ban

Plastic microbeads are designed to be washed down the drain but are too small to be reliably captured by wastewater treatment facilities. According to a press release from the Center for Biological Diversity, one tube of exfoliating facewash can contain more than 350,000 microbeads, and it is estimated that 2.9 trillion microbeads enter U.S. waterways […]

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MSD Announces $100 Million Rainscaping Program

On Dec. 22, the Metropolitan St. Louis Sewer District (MSD) announced a plan to complete $100 million in Rainscaping improvements to much of St. Louis City and portions of nearby North St. Louis County. Rainscaping practices include such features as rain gardens, bioretention cells, pervious pavement, and green roofs that slow and soak up rainwater […]

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Researchers Assess Green Infrastructure Effects at the Catchment Scale

In a new study, Kent State University and Cleveland Metroparks researchers have collected some of the first data testing the effectiveness of green infrastructure projects at the watershed scale. “[Green infrastructure] strategies are used throughout the country and in other countries, but the novel thing is that we were able to demonstrate that they work […]

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EPA Releases Proposed Phase II MS4 Remand Rule

The U.S. Environmental Protection Agency (EPA) has released its proposed Phase II Municipal Separate Storm Sewer System (MS4) permit remand rule. The proposed rule addresses how small MS4s seek and incorporate public comment and agency reviews into their permits. The official proposed rule was published in the Federal Register Jan. 6, beginning a 75-day public […]

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The Real Cost of Green Infrastructure

Andrew Potts, Brian Marengo, and Dan Wible of CH2M discuss four strategies for reducing green infrastructure costs gleaned from hundreds of built projects across the U.S.

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Flood Models Should Include Cities’ Effect on Rainfall

Current flood models do not account for cities’ effect on local rainfall patterns, which could lead to significantly underestimating the severity and frequency of floods in urban areas, a study finds. Purdue Professor and Indiana State Climatologist Dev Niyogi and collaborators at China’s Tsinghua University showed that impervious city surfaces can influence dramatically the way […]

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Floating Islands To Help Protect Jamaica Bay Shorelines

New York City Department of Environmental Protection (DEP) is using floating, vegetated wave attenuators in Jamaica Bay. The attenuators are part of a pilot project to study the efficacy of deflecting and reducing wave energy to protect critical salt marsh wetlands. The 2-year pilot program will cost approximately $500,000 and will inform future shoreline protection […]

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