Engineered Stormwater Biofiltration Media (BASMAA Compliant)
Bioretention Soil Mix is an engineered soil media specifically designed for stormwater management systems such as bioretention basins, rain gardens, bioswales, and other low-impact development (LID) applications. This specialized blend supports healthy plant growth while effectively filtering and infiltrating stormwater runoff, helping to reduce pollutants and protect local waterways. Formulated to meet regional stormwater specifications, including BASMAA and municipal guidelines, this mix typically consists of 60–70% clean sand and 30–40% organic compost. The balanced composition ensures optimal permeability, moisture retention, and nutrient availability, making it suitable for both public infrastructure and private landscape projects. Its engineered structure promotes a long-term infiltration rate of approximately 5 inches per hour or greater, allowing efficient drainage while sustaining vegetation. This makes the Bioretention Soil Mix an essential component in sustainable site design and green infrastructure projects throughout the Bay Area.
Key Features
Engineered for Stormwater Treatment – Designed for bioretention and biofiltration systems.
BASMAA-Compliant Blend – Meets regional and municipal stormwater management specifications.
Optimal Infiltration Rate – Promotes efficient drainage while preventing waterlogging.
Supports Healthy Vegetation – Provides essential nutrients and moisture retention.
Environmentally Sustainable – Helps remove pollutants and improve water quality.
Versatile Applications – Suitable for rain gardens, bioswales, planter boxes, and green infrastructure projects.
Common Uses
Bioretention Soil Mix is specifically engineered for stormwater management and green infrastructure applications. Its unique composition allows it to effectively filter pollutants, manage runoff, and support healthy plant growth, making it an essential material for both public and private landscape projects.
Stormwater Management Systems
Bioretention Basins – Ideal for municipal and commercial projects designed to capture and treat stormwater runoff.
Bioswales – Enhances infiltration and pollutant removal along roadways, parking lots, and developments.
Rain Gardens – Perfect for residential and community installations that manage roof and surface runoff.
Low Impact Development (LID) Projects
Green Infrastructure Installations – Supports sustainable site design aimed at reducing urban runoff and improving water quality.
Stormwater Planter Boxes – Suitable for urban environments where space is limited but stormwater treatment is required.
Permeable Landscape Features – Works effectively with permeable pavements and infiltration systems.
Commercial & Municipal Applications
Public Works Projects – Frequently specified by civil engineers and municipalities for compliance with regional stormwater regulations.
Parking Lot and Roadway Medians – Helps manage runoff from impervious surfaces while supporting vegetation.
Redevelopment and New Construction – Meets regulatory requirements for stormwater treatment in modern developments.
Environmental & Landscape Applications
Habitat Restoration Projects – Supports native and adaptive plant species in ecological restoration efforts.
Erosion Control Areas – Improves soil stability while allowing proper drainage.
Sustainable Landscaping – Enhances environmentally responsible landscape designs focused on water conservation and pollution reduction.
Why Choose Bioretention Soil Mix?
Whether you are a contractor, civil engineer, landscape architect, municipality, or homeowner, this engineered soil provides the performance and reliability needed for successful stormwater management. Its compliance with recognized specifications ensures confidence in both design and long-term functionality.
Delivery & Ordering
At Bay Area Landscape Supply, we make ordering Bioretention Soil Mix simple and efficient. Whether you're a contractor, civil engineer, municipality, or homeowner, our streamlined delivery service ensures your project stays on schedule.
Bulk Delivery Options
Our Bioretention Soil Mix is available for bulk delivery using professional dump trucks, making it ideal for both small residential rain gardens and large-scale commercial or municipal stormwater projects.
Truck Capacity Small Dump: 6-8 cubic yards Big Dump: 12-25 cubic yards
Note: Load capacities are approximate and may vary depending on material moisture content and site accessibility.
Service Areas
We proudly deliver throughout the San Francisco Bay Area, including:
Marin County
Sonoma County
Alameda County
Contra Costa County
San Francisco County
San Mateo County
Solano County
Frequently Asked Questions – Bioretention Soil Mix
1. What is Bioretention Soil Mix?
Bioretention Soil Mix is an engineered soil designed for stormwater management systems such as rain gardens, bioswales, and bioretention basins. It filters pollutants, promotes infiltration, and supports healthy plant growth, making it essential for Low Impact Development (LID) and green infrastructure projects.
2. What is Bioretention Soil Mix made of?
This mix typically consists of 60–70% clean washed sand and 30–40% organic compost. The combination provides optimal drainage, moisture retention, and nutrient availability while meeting regional stormwater specifications such as BASMAA guidelines.
3. Is this Bioretention Soil Mix BASMAA compliant?
Yes. Our Bioretention Soil Mix is formulated to align with BASMAA (Bay Area Stormwater Management Agencies Association) specifications and other municipal stormwater requirements. Project-specific compliance documentation and test results can be provided upon request.
4. What applications is this soil mix suitable for?
Bioretention Soil Mix is ideal for: Rain gardens, Bioswales, Bioretention basins, Stormwater planter boxes, Green infrastructure and LID projects, Commercial and municipal developments.
5. What is the infiltration rate of this soil mix?
The mix is engineered to achieve a long-term infiltration rate of at least 5 inches per hour, ensuring efficient stormwater drainage while maintaining sufficient moisture for plant health.
6. Does the compost contain manure or biosolids?
No. The compost used in our Bioretention Soil Mix is derived from plant-based green waste and is typically STA-certified by the U.S. Composting Council. It does not contain manure or biosolids, helping to minimize nutrient leaching and meet regulatory standards.
7. Can this soil mix support plant growth?
Yes. The organic compost component provides essential nutrients and improves moisture retention, creating an ideal environment for native and drought-tolerant plants commonly used in rain gardens and bioswales.
8. How is Bioretention Soil Mix different from regular topsoil?
Unlike standard topsoil, Bioretention Soil Mix is engineered for stormwater treatment. It offers controlled permeability, pollutant filtration, and regulatory compliance, whereas regular topsoil may compact easily and lack the necessary drainage and filtration properties.
