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As previously discussed in our “Construction Cover vs. Post Construction Cover” blog post, the total cover required for a system is the combination of the pavement, measured from the bottom of flexible pavement or top of rigid pavement, the granular road base, and the backfill material. But is 12” really enough post construction cover for your CMP

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If you’ve ever been confused about the cover requirements over underground detention systems, you’re not alone.  Why do the requirements change during construction vs. post-construction? Let’s break it down. What is Underground Detention System Cover?First, let’s start by defining what cover is so that we’re all on the same page. Cover is

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High-flow bioretention systems target the removal of suspended solids, total and dissolved nutrients and metals, oil and grease, trash, and debris. Components typically include plants, mulch and specially designed filter media mixtures often contained in a concrete container. The mulch layer and filter media capture and immobilize pollutants during

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High rate biofiltration continues to gain acceptance within the regulatory and engineering community as an acceptable alternative to traditional bioretention. These systems provide high treatment levels in a compact size making bioretention feasible on sites where traditional bioretention is not possible. They have earned numerous agency approvals

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“One’s company, two’s a crowd, and three’s a party” may not exactly apply to manufactured treatment devices (MTDs), but hopefully, this post can offer some insight that will make designing multiple MTDs in parallel a little more fun.It is common practice to utilize different Best Management Practices (BMPs) in series or “treatment trains” to

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ASTM International (ASTM) has been a recognized leader in consensus standard development by many different industries for more than 100 years now.  ASTM’s newest technical committee, E64, is devoted specifically to developing standards applicable to the broad class of stormwater management practices known as stormwater control measures (SCMs). 

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As cities grow and expand, we hear the word redevelopment tossed around more frequently. But what is redevelopment? In its most simplistic definition, redevelopment is the action or process of developing something again or differently. How that applies to the civil site world is any new construction on a site that has pre-existing

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Since its inception in 1996, The International Stormwater BMP Database  has been archiving performance, design, and cost data for stormwater treatment best management practices (BMPs) in a publicly accessible database.  At this point, over 600 BMP studies have been added, providing a wealth of information to regulators, engineers, academics, and

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Sloping fills over underground corrugated metal pipe (CMP) is an obstacle and consideration when choosing a suitable stormwater detention location. While it is always preferable to place underground detention systems on locations with no slope, that is not always possible. Any given project site may contain several slope geometries or profiles that

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Oil changes. Gutter cleaning. Annual doctor appointments. These are all forms of maintenance that most people would likely agree are necessary to keep our vehicles, our homes, and our bodies in good working order. We may not like spending the time, money, and effort on these tasks, but we do them anyway.If you happen to own a stormwater best

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