On May 5th, 2009 the California State Water Resources Control Board voted to adopt emergency regulations governing the storage of biodiesel in underground storage tanks (USTs). Now that these regulations are in effect, UST owners will need to apply for a variance with their local CUPAs and submit materials compatibility and leak detection
functionality documentation.

VARIANCE FORMS

• NOTICE OF INTENT TO STORE BIODIESEL
• TESTAMENT OF COMPATIBILITY
• LEAK DETECTION FUNCTIONALITY

MATERIALS COMPATIBILITY DOCUMENTS

Below are links to documentation needed to satisfy variance requirements. New letters will be added to this list as we receive them.

TANKS

• Containment Solutions
• Owens Corning
• Steel Tank Institute (Modern Welding, Mosier Brothers, Perkins)
• Steel Tank Institute (low carbon steel, i.e. Trusco)
  
• Xerxes

COMPONENTS

• Flexing
• Franklin Fueling - Pumps
• Hosemaster
• Emco
• Western Fiberglass - Sumps

PIPING

• Ameron
• BRUGG FLEXWELL-HL Piping
• IPP
• OPW
• PetroTechnik
• NOV Fiber Glass Systems
• Western Fiberglass

LEAK DETECTION

• BEI
• Leak Detection Technologies
• iota
• Praxair
• Veeder Root
• Vaporless

If you believe your UST systems are compatible with biodiesel but are unable to get documentation from the manufacturers, certification can come from a nationally recognized biodiesel association or a nationally recognized research organization with applicable expertise.  If that is the case, please email Celia DuBose at celiadubose@gmail.com and we will be happy to help. (This option is not available for leak detection systems.)

Please send us any documentation you may independently acquire so that we can make it available to others on this site.