I had an interesting sequence of thoughts after watching my 12-year old daughter chat with a friend on her cell phone about a music video they were simultaneously streaming on their laptops.  It’s easy to marvel at a kid’s fluidity with technology that didn’t exist when they were born, but I realized that I, too, experienced this rapid adoption of

Read Part 1: Frustration is a Two-Way Street The initial wave of manufactured treatment devices (MTDs) were generally simpler than options available today.  With few exceptions, early MTDs were comprised predominantly of swirl/vortex and other types of gravity separators that targeted solids and floating pollutants.  State and local stormwater

Having spent the last sixteen years immersed in the world of stormwater best management practices (BMPs), with particular emphasis on manufactured treatment devices (MTDs), I’ve repeatedly borne witness to the frustrations, misperceptions, and concerns raised by all walks of stormwater professionals relative to MTDs.  They’re too complicated, you

This month’s blog post comes from Janice Kaspersen, editor of Stormwater magazine. Did you drive to work this morning? Was a parking space waiting for you when you arrived? Many cities require developers to provide a minimum number of parking spaces for office, retail, and residential buildings; sometimes the number is based on the square footage

Given the number of conversations I’ve had in recent months with other stormwater professionals that don’t entirely understand the value of incorporating the sediment mass load capacity of a filtration BMP into the design process, I feel it’s time to revisit the subject.  We tend to think about BMP design in terms of treatment capacity which is

There are several factors to consider when selecting the most appropriate stormwater filtration solution for a specific site.  Several of these factors easily come to mind, such as: state or jurisdiction regulations, hydraulic grade line limitations, footprint constraints, and other site restrictions.  One variable that is often overlooked when

Why we need risers?If you’ve ever walked down a city street and stepped over a manhole with the label “STORMWATER” nestled in the pavement, chances are you’ve skimmed the surface of a detention system. If you were to lift up that manhole lid and peer down into its’ depths, you might be surprised to find a whole underground network of pipes and

Hydrodynamic Separators (HDS) have been used in the stormwater industry for over 20 years.  They are effective at removing TSS, hydrocarbons, and trash and debris from stormwater runoff and are often used for standalone treatment or pretreatment to filtration, detention, infiltration and rainwater harvesting system.  With the varied applications

As rainwater harvesting is becoming a more popular choice for stormwater management and runoff reduction, additional features are becoming available to allow for monitoring, report generation, and managing systems from a website interface.Just like many stormwater treatment systems, sometimes rainwater harvesting systems are forgotten about because

For the majority of applications, corrugated metal pipe (CMP) is the “go to” material for subsurface infiltration. This in turn, leads to a lot of design questions. Below is a list of six questions and answers we received from a recent webinar on designing CMP detention systems.1.  What are the design considerations for construction beneath