ELG Stainless Steel Recycler Achieves Non-Detect Industrial Stormwater Results
Overview
Client: ELG Metals
When ELG Metals, a leading stainless steel recycling facility, faced exceedances under California’s Industrial General Permit (IGP), they turned to FROG Environmental to design a stormwater treatment system capable of handling high-volume runoff and reducing pollutants to regulatory standards.
The Challenge
ELG’s stormwater runoff contained elevated levels of:
- Total Suspended Solids (TSS)
- Oil and Grease (O&G)
- Chemical Oxygen Demand (COD)
- Aluminum (Al)
- Copper (Cu)
- Iron (Fe)
- Lead (Pb)
- Zinc (Zn)
Facing scrutiny from the Los Angeles Waterkeeper, the facility needed a robust system that could bring all pollutants below Numeric Action Levels (NALs) and Total Maximum Daily Load (TMDL) limits without interrupting daily operations.
The FROG Solution: Engineered for Performance
FROG Environmental engineered a 300-GPM stormwater treatment system that combined proven Best Management Practices (BMPs) with advanced filtration technology.
System Components:
- Chemical Injection & Flocculation — to bind fine particles and dissolved metals.
- Mechanical Filtration — for solids and debris removal.
- Media Filtration — with specialized MetalPROOF™ media and oil-absorbent materials.
- Water Storage & Flow Control — for consistent treatment and sampling reliability.
This multi-stage approach delivered comprehensive pollutant reduction and long-term operational stability.
The Results: Compliance and Beyond
The outcome was exceptional:
- All pollutants reduced below Numeric Action Levels (NALs) and TNALs.
- Many constituents recorded non-detect results.
- Compliance restored under California IGP and TMDL standards.
- Facility maintained reliable 300 GPM flow with low maintenance needs.
ELG now operates confidently within compliance, even under heightened regulatory review.
Supporting BMP Solutions
The treatment system incorporated and was supported by FROG’s line of stormwater BMP products, including:
- Industrial Wattles – For long-term sediment and oil filtration.
- MetalPROOF™ Media Socks – To remove dissolved Copper, Lead, and Zinc.
- StormPROOF® BMP Kit: Metals – A comprehensive metals filtration solution.
- – To capture oil, grease, and hydrocarbons from runoff.
These products are designed to support stormwater compliance and enhance treatment system performance for industrial facilities across California.
Key Takeaways
- Fully compliant with California IGP and TMDL benchmarks.
- Achieved non-detect results across multiple pollutants.
- Proven, scalable design for high-flow stormwater systems (300 GPM).
- Reduced regulatory risk and improved environmental performance.
About FROG Environmental
FROG Environmental specializes in industrial stormwater management and compliance under the California Industrial General Permit (IGP). From BMP product supply to full-scale treatment system design and installation, we help facilities protect the environment and maintain regulatory confidence.
📞Call: 310-241-0866
📧 Email: sales@frogenv.com
🌐 Website: https://www.frogenv.com/stormwater-treatment-systems