Norcal Ag Service is dedicated to making quality Biotreatment Soil Mix (BSM) to the specifications you need for your job.  We have extensive experience in helping organizations engineer the soils they need to meet the wide variety of specifications for these projects.
Our custom-blended Bioretention soils remove pollutants through filtration and a variety of biological and physical processes. Our soils meet Bay Area Stormwater Management Agencies (BASMA) soil specifications for  Bioretention Soil media. They also meet USDA Soil Type requirements. Tested for Storm Water Infiltration Rate.

Biotreatment Soil Media (BSM) is a critical element of the bioretention system. The BSM has a ratio of inorganic and organic materials to allow the appropriate infiltration rates for stormwater; facilitate pollutant removal through chemical, biological and physical processes; and provide a sufficient growing medium for plants. 

Call Today for delivery pricing.


Norcal Ag Service 

Bioretention Basin

Rated #1 

Product & Service in Northern California

We make our Bioretention soil mix with premium components of a PG&E certified washed sand and our ultra clean greenwaste compost. It is then machine blended for ultimate consistancy. Preferred BSM of Ducks Unlimited for sensative watershed filtration.

where to buy bioretention soil media


Stormwater Management - The Basics

​Biotreatment Soil Mix

Bioretention soil media orders are delivered by end dump semi's or high side transfers when needed. Orders are processed within 24 hours of receipt.
Call us today for product pricing delivered to your location(s) (925) 822-5364

Engineered Soils, Bioswale, Bioretention Soil Media

 Norcal Ag 'FilterGreen' BioSoil

  •          Certified Biotreatment Soil Media
    • (special blend of sand and compost)