Company Careers
Start A Project
Making the Grade
Seth Sokol October 08, 2018

There are certain hazards with any profession. For a stormwater engineer, mine takes the form of gentle teasing from friends and family as I stoop in parking lots peering down grates into the abyss.What am I looking for? Well, like most stormwater infrastructure, nearly every Contech product is buried. My work is completely hidden underground!

Learn More

Hydrodynamic Separators (HDS) – often referred to as oil-grit separators, swirl devices, or vortex separators – are best management practices often used to remove sediment, hydrocarbons, trash and debris from stormwater runoff.  HDS units are regularly used as either standalone treatment devices or pretreatment systems to detention, infiltration,

Learn More

When it comes to using hydrodynamic separator (HDS) treatment devices, it is becoming commonplace to integrate them into storm sewer networks without worrying about the hydraulic impact of the device. After all, the majority of these devices are manholes or vaults with flow-through treatment, which are seemingly uncomplicated when compared to those

Learn More

With stormwater pollutant removal requirements increasing nationwide, the demand for robust filtration has also increased.  Designing and specifying a properly functioning filter extends beyond specifying the correct product (media or membrane filter) and sizing correctly (flow or volume based).  These additional considerations are classified as

Learn More

For this issue of the Stormwater Blog, I thought it would be beneficial to include a short video to better visually illustrate the durability and general advantages of Aluminized Type 2 (ALT2) corrugated steel pipe (CSP) detention/infiltration systems.The protective coating of aluminized type 2 corrugated steel pipes is composed of a free aluminum

Learn More

One could argue that plants are the most essential part of biofiltration systems such as bioretention, high performance biofilters, and rain gardens.  However, plant design presents a unique challenge for system designers.  What types of plants should be selected?  Will they work well in the system? Will they be aesthetically pleasing?  Designing a

Learn More

The International Stormwater Best Management Practices (BMP) Database project website (http://bmpdatabase.org) features a database that includes over 600 BMP performance studies.  This is a tremendous free resource for engineers, scientists, policymakers and others who seek to characterize the pollutant removal and hydrologic performance of various

Learn More

In a previous post (Don’t Bypass Good Design Part 1: Offline Vs. Online Diversion Structures), I wrote about bypass structures and argued that they deserved more attention. In this follow-up, we’ll do just that by comparing two different ways to divert flow in a precast manhole. Option One: Using a manhole with different elevation outlet pipes With

Learn More

Over the last 20 years of site-civil design, it has been interesting to see stormwater trends come and go.  Some design methodologies have disappeared, only to return later or in a nearby geography as the “new” approach.  Agency directives can shift based on new leadership or the prevalent regional concerns at the time.  As the construction

Learn More

Months of design, pages of specifications, and tens or even hundreds of thousands of dollars may go into the design of a single bioswale, filtration basin, or other stormwater treatment system. So why do we spend so little time thinking about the flow control devices that make them work? This article is part one of a two-part series on bypass

Learn More
 Search

SUBSCRIBE