Biodiesel:

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Biodiesel can be used, either as a pure fuel or blended with conventional petroleum-based diesel fuel, to power diesel engines and has become an increasingly popular alternative fuel choice. UST Owners/Operators must remain aware of regulations regarding the storage of biodiesel. Blends of greater than 20% biodiesel have not yet been approved by the State Water Regional Control Board (SWRCB) for storage in underground tanks. Any UST Owner/Operator found to be storing a non-approved biodiesel blend in an underground storage tank will be required to remove the biodiesel product or be subject to enforcement actions and fines.

UST Owners/Operators that currently store or would like to store biodiesel in an underground tank must complete and submit a Sonoma County Notice of Intent to Store Biodiesel form to our office.

The following are some important links to the SWRCB's updates on biodiesel.

• Revised Notice of Public Hearing 11/17/09 New!
• Notice of Second Modification to Text of Proposed Regulation New!
• Information on Storage of Biodiesel
  
• Interim Regulations for UST Systems Storing Biodiesel Blends up to B20
  
• Proposed Regulation for Interim Variance for Underground Storage Tanks (USTs) Storing Certain Biodiesel Blends
• Text of Emergency Regulations as Approved by Office of Administrative Law (OAL)

Stay informed of the changing regulations regarding the underground storage of biodiesel. For more information, visit the State Water Regional Control Board website. Also, check out the California Biodiesel Alliance (CBA) website where there is information from various manufacturers regarding their product compatibility with biodiesel.

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