Contech Stormwater experts discuss designing stormwater BMP’s, regulations, maintenance issues, and all things stormwater.
We are an industry of abbreviations and acronyms. The terms we use on a daily basis can sometimes hold a general or broad meaning in our minds, but the actual definition of these terms may leave our thumbs hovering over the game-show buzzer. To help ease the furrowed brows, we have collected and defined the top 11 terms every Stormwater Engineer should know:
The goal of the TMDL program is arguably simple - to develop watershed level conservation plans designed to restore impaired waters and attain applicable water quality standards – but its development and implementation has not been simple. In an attempt to bring new clarity to the process of incorporating TMDLs into stormwater permits, the EPA issued a revised guidance document last November entitled “Establishing Total Maximum Daily Load (TMDL) Wasteload Allocations (WLAs) for Storm Water Sources and NPDES Permit Requirements Based on Those WLAs”.
There are a vast number of stormwater separators on the market which can make it challenging when selecting the ideal solution for each project. Hydrodynamic separators and oil/water separators are often used interchangeably in the industry but each system is unique and one may be better suited for the overall treatment goals of the project. So what is the difference between a hydrodynamic separator and an oil water separator and how can you determine which one is best suited for your project?
Stormwater regulations are increasing calling for an increased level of treatment. This often takes the form of filtration systems. Two types of filtration systems used in stormwater are media filtration and membrane filtration.
Media Filtration systems are defined as filters that function through the use of physical capturing of pollutants, as well as absorption of pollutants through chemical reactions. Typical media based filtration systems are composed of sand, stone, organics, or other materials. The media utilized is typically chosen to target specific pollutants for removal.
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