The Stormwater Blog 

Contech Stormwater experts discussing Low Impact Development, Onsite Water Management, Rainwater Harvesting and all things Stormwater.

 Stormwater BMP Testing – A Two-Pronged Strategy
Given the limitations and challenges inherent of BMP evaluations, whether done in the field or the laboratory, it’s a wonder we bother with either. However, the intent of identifying these issues is not to discourage evaluation, but to foster understanding so as to encourage BMP evaluations to be structured in a manner that yields sound results.
Are We Ready for a National Stormwater Rule?
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 and to make other regulatory improvements to strengthen its existing stormwater program .
What is LID? Five Principles of Low Impact Development.
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.
5 Hydraulic Considerations When Choosing a Stormwater Filter Media
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...

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 traditional infiltration not possible, consider using a perforated CMP manhole or an infiltration well (drywell).

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 apparatus, methodologies, and other discoveries that now serve as solutions to once daunting scientific and societal challenges. Faced with a growing list of water quality and other environmental quandaries, our ability to collectively innovate viable solutions has perhaps never been more crucial.
What’s Happening Inside My Tree Box Filter?
An appropriately designed and manufactured tree box filter combines the benefits of natural biofiltration with the reliable and predictable performance of an engineered system. Each tree box filter utilizes a multifaceted approach including physical, chemical and biological processes to capture, immobilize and treat harmful pollutants, while also encouraging low impact development practices by treating smaller drainage areas at the source.
Choosing a BMP - It's All About Maintenance
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.
Categories: Maintenance
Top 5 Commonly Missed Rainwater Harvesting Cistern Components
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 .
Six Questions to Ask When Selecting a Stormwater Filter Media
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 selecting the right media for your application.
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