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Having worked in the field of stormwater management for almost 20 years, and seeing the conceptual and technological development of stormwater management and BMPs, it is clear we have had successes and failures.We need to learn from both, especially with USEPA’s national rulemaking activities to establish a program to reduce stormwater discharges

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The Low Impact Development (LID) approach to site development and stormwater management is rapidly becoming the required design approach in many areas of the United States.The basic principle is to use nature as a model and manage rainfall at the source. This is accomplished through sequenced implementation of runoff prevention strategies, runoff

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The removal of site-specific pollutants can be maximized with the variety of filtration media available. Understanding the hydraulics of the media you choose is a key, albeit misunderstood, factor in determining the effectiveness of the filtration system. Here are five things you should consider.1) Evaluate the specific flow rate (q) through the

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An increasing challenge that we see with our customers is balancing water quality with water quantity. Conventional design would be to use an in ground detention pond. But, if this is not an option, whether the owner does not want the aesthetics of a pond, the land needs to be used for parking, or you have a layer of clay soil that makes

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Innovation has become synonymous with the United States, serving as a catalyst for our economic growth and continuous improvement of our standard of living.Economics aside, if not for innovative scientific and technological breakthroughs we would be without countless apparatuses, methodologies, and other discoveries that now serve as solutions to

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The task of selecting the proper stormwater BMP for your site can be tedious. There are thousands of choices; from drainage swales and silt fences to hydrodynamic separation and storm water filtration systems. All of them have their place in a well written BMP Plan, but none of them will work without maintenance. During my time as a state

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A rainwater harvesting cistern is comprised of many components. Our experience is that some of these components are often overlooked, which can negatively impact water quality. Here is our list of the top five commonly missed rainwater cistern components and why they are important .1. Calming InletThe calming inlet reduces the velocity of water

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During the past few years, a number of different filter media have been used for stormwater filtration. Media such as sand, peat, and compost have been used successfully. Recent uses of perlite, zeolite, carbon, and other “exotic” media have expanded the choices for targeting specific pollutants. Here are some questions you should ask when

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The intent of LEED Sustainable Sites Credit 6.2 is “to limit disruption and pollution of natural water flows by managing stormwater runoff,” and the requirements necessary for meeting this intent are clearly spelled out: capture 90% of the average annual rainfall and treat it by removing 80% of the total suspended solids (TSS). While the rating

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By now, you’ve probably heard of triple bottom line accounting, a full cost accounting approach considering the economic, environmental and social impacts of a decision or more poetically, the three P’s: people, planet and profit. In the stormwater infrastructure planning world, as in many other urban planning arenas, this approach is gaining

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