Landscape Development, Inc., specializes in the design and construction of large-scale bioretention basins for residential and commercial developments across California. As sustainability and regulatory compliance continue to be top priorities for developers and municipalities, bioretention basins—also known as bio-swales or bioretention BMPs (Best Management Practices)—offer an effective and environmentally friendly solution to managing stormwater runoff.
What Are Bioretention Basins?
Bioretention basins are engineered landscape features that filter stormwater runoff using a layered system of soil, mulch, and gravel. These basins remove pollutants through physical filtration, evapotranspiration, and infiltration, improving water quality before it reenters natural waterways or storm drain systems.
A typical bioretention system includes:
A ponding area that temporarily collects runoff
A vegetated and mulched surface layer that enhances pollutant removal
An engineered soil mix designed for optimal infiltration
A gravel or sand bed to support water percolation
An optional underdrain system to direct treated water to a discharge point
These systems come in various shapes and sizes and are tailored to meet site-specific stormwater goals, especially for large-scale developments.
California’s Design Standards for Bioretention BMPs
To ensure performance and regulatory compliance, bioretention BMPs in California must meet specific design requirements:
Trash Capture: Systems must trap particles 5mm or larger and prevent them from migrating offsite. This is achieved with a screening mechanism at overflow or bypass outlets.
Hydraulic Capacity: The treatment area must accommodate the volume from a one-year, one-hour storm event, or match the flow rate of a corresponding storm drain system.
Engineered Plans: All designs must be stamped and signed by a California-licensed civil engineer, ensuring professional accountability and technical integrity.
These requirements are crucial for achieving compliance with local water quality regulations, particularly under California’s Regional Water Quality Control Board standards.
Maintenance: A Key Component of Longevity
Routine maintenance is critical to the ongoing performance of bioretention basins. Without regular upkeep, trapped debris can overflow or clog the system, compromising its effectiveness. Key maintenance tasks include:
Removing accumulated trash and organic debris
Checking and replacing mulch layers
Clearing sediment from inlets and underdrains
Inspecting plant health and replanting as needed
Pretreatment options, such as forebays or upstream swales, can also enhance system efficiency by capturing debris before it enters the basin.
Why Choose Landscape Development, Inc.?
Leading the Way in Stormwater Management Through Landscape Construction
With over 40 years of experience in landscape construction across California, Landscape Development, Inc. is a trusted partner for homebuilders and developers looking to integrate sustainable infrastructure into their communities. Our team has deep expertise in designing, engineering, and building bioretention basins that meet local stormwater requirements and support long-term environmental stewardship.
We collaborate closely with civil engineers, city planners, and regulatory bodies to deliver turnkey stormwater solutions that are both functional and beautiful. Whether you’re working on a new housing development or a commercial site, we ensure your bioretention basin is built to perform and last.
