Enhanced Metal Removal Where Industry Meets the Water
Developed by the US Navy, FocalPointEMR is a Green Stormwater Infrastructure system that eliminates harmful metals, nutrients, TSS, oil and grease from industrial site runoff.
Most industrial facilities are under increasing pressure from regulators and local communities to protect harbors, bays, lakes, and streams by reducing the elevated concentrations of environmental pollutants commonly found within their facility’s stormwater runoff. Facilities are challenged due to intense operations with heavy equipment, multiple pollutant sources, non-porous paved surfaces and buildings, storage areas, and aging drainage and stormwater management technologies. To help solve this challenge, US Navy engineers spent 10 years and tested dozens of optional media options to develop FocalPointEMR, an LID/BMP hybrid system that decreases the concentration of toxic contaminants to meet NPDES permit requirements. In addition, the small footprint and rapid processing times of FocalPointEMR is beneficial for industrial sites where usable space is at a premium.
How Does It Work?
The FocalPointEMR system is made of seven main components, working in succession to filter out TSS, fine particles, nutrients, oil, grease and metals. Runoff initially filters through a Gabion Barrier which prevents larger trash and debris from entering the system. Runoff then enters the Biofiltration System, where the stormwater percolates down through a mulch layer, engineered media and bridging stone before it enters the modular box underdrain. Once the modular box underdrain is full, runoff flows into the secondary treatment system. Here it percolates down through activated carbon char, which absorbs heavy metals, fluorides, iron and organic molecules. Then, through FS-50, an iron enhanced activated alumina on top of the underdrain that reduces dissolved contaminants.
- Hi-Flow Biofiltration System
- Modular Box Underdrain
- 2″ Gravel w/ Mesh
- 6″ Oxbow Activated Carbon Char
- 9″ Activated Alumina FS-50
- 4″ Underdrain w/ Stone
FocalPointEMR has full scale field verification under the Department of Defense, Environmental Security Technology Certification Program (ESTCP). In addition, the NAVFAC Engineering and Expeditional Warfare Center performed all testing and sampling protocols per the Washington State Department of Ecology’s Technology Assessment Protocol (TAPE) – Ecology and Naval Base Point Loma NPDES permit.
- Metal Recycling/Fabrication
- Oil & Gas Mining
- Light Industrial
- Roof runoff
- Sewer/Wastewater Facilities
- Manufacturing Facilities
- Transfer/Recycling Facilities
- Transportation Facilities
- Petroleum Stations/Terminals
- Other industries
From the US Navy’s Final Technical Evaluation Report
This project demonstrated the Hybrid LID/BMP System’s ability to achieve high metals and suspended solids removal consistently over two rain seasons. The average removal percentage for total and dissolved copper was 97%, total and dissolved zinc was 98%, and TSS was 95%. Over the project life, the system received minimal maintenance and only two contractor maintenance cycles were performed to replace the top three inches of mulch on the LID biofilter.
If there is other documentation not posted here, pleas contact us and we will be happy to provide any additional specs or technical information you need.
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If you and your team would like to learn more about any of the wide variety of products and services we offer, schedule a LOUNGE & LEARN today. We can discuss with your team anything from our turnkey compliance services during construction activity to our post-construction stormwater management systems; or our stormwater quality treatment to our erosion and sediment control solutions.