Regional stormwater BMPs

Larry Tortuya


Regional Storm Water Capture and Reuse/Infiltration is an emerging approach to address water quality treatment in highly developed urban areas.  Treatment options using proprietary BMP solutions to address local compliance initiatives are often way too expensive, a challenge to find the right footprint, and can be a deterrent to development of an area in desperate need of revitalization.  Watershed Management Plans (WMPs) are written to address this issue at a regional level, bringing multiple stakeholders together for mutually beneficial solutions.  Regional storm water capture and reuse/infiltration projects are designed to treat larger areas where development is at the ultimate stage, and finding large enough footprints for installation of treatment BMPs are a challenge. An example of this type of project is a design/build project located in the City of Long Beach, managed by the City of Signal Hill called Los Cerritos Creek (LCC) Sub-Basin 4 Regional BMP and Capture Facility.

The City of Signal Hill, in conjunction with the City of Long Beach, the Long Beach Airport, and Caltrans have teamed together on a regional facility for an area known as LCC Sub-Basin 4, within the Los Cerritos Creek watershed.  The project is designed to treat runoff from 1,925 acres of urban area within the Cities of Signal Hill and Long Beach.  The purpose of the project is to address the TMDL compliance study of LCC Sub-basin 4 by treating the 85th percentile storm event, also known as the “first flush” water quality storm by diverting the discharges of this storm event into a large (Regional) structural BMP system.  The project location is the Long Beach Airport, because of its proximity to the downstream point of the watershed, and the available project area.  This is a design/build project currently in the final phase of construction.

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