Herrera’s scientist and engineers are skilled in the analysis and design of treatment systems and ancillary operations equipment for stormwater runoff.
Our experience has been built from more than 15 years of assistance to municipal clients in the Pacific Northwest. We are experts in the applicable regulatory requirements for treatment and in selecting appropriate and cost-effective treatment technologies that are tailored to the pollutants of concern for the specific application. Our scientists and engineers understand the necessary balance between treatment optimization and operations and maintenance needs.
Additionally, our staff members are experts in the complementary areas of water quality, hydrologic analysis, hydraulic analysis, modeling, permitting, and construction management. Our expertise enables us to provide our clients with practical, well-rounded solutions.
Key Projects
- South Park Water Quality Improvements Preliminary Engineering Project – Seattle Public Utilities
- Ecology Embankment Technology Evaluation and Engineering Report – Washington State Department of Ecology
- Spyglass Stormwater Outfall Water Quality Retrofit Design – Clean Water Services, Oregon
- Compost Amended Vegetated Filter Strips Pilot Project – Design, installation, and long-term monitoring to provide scientifically defensible justification for use of this relatively low-cost option for treating runoff and reducing runoff volume; Washington Department of Transportation