Biotreatment Soil Media and Mulch Guidance

Biotreatment Soil Media (BSM) and Biotreatment Wood Mulch (BWM) are important elements of a bioretention system. The BSM specification was created by BASMAA (now known as BAMSC) and was last updated in 2016. Since that time, SCVURPPP and regional partners have created several related guidance documents and checklists including the following:

  • BSM Specification (BASMAA 2016)
  • SCVURPPP BSM Supplier List (SCVURPPP 2021)
  • SCVURPPP BSM Verification Checklist (SCVURPPP 2021)

The BWM specification was created in 2021 and work is underway to create a list of mulch suppliers to go with the specification.

  • Regional BWM Specification (2021)

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