Alternative Fuels

DATCP Storage Tank Plan Approval and Installation Requirements for Alternative Fuels

For reference, our Wisconsin Administrative Code for Flammable, Combustible, and Hazardous Liquids is ATCP 93, our Wisconsin Administrative Code for Petroleum Products is AT?CP 94, and our Wisconsin Administrative Code for Weights and Measures is ATCP 92.

New Tank Systems (ATCP 93.100)

  • Installation Plans are to be submitted to DATCP for approval on form TR-WM-126. Installations where all tanks are less than 5,000 gallons capacity may be performed through the departments designated Local Program Operators (LPOs). With the installation of a new tank system estimated cost of a plan review for alternative fuels will vary dependent on if other tank systems are being installed at the same time. Fee amounts are determind by Wisconsin Administrative Code § ATCP 93.1605 and can be found on TR-WM-126 and other forms.

  • Specific to an alternative fuels tank system installation, Part I of the TR-WM-132 Alternative Fuels form available on our forms page shall also be submitted with the installation plans. This form requires the tank system installer or a professional engineer to verify that the tank system materials are compatible with the fuel being stored.

  • All tank systems, whether alternative fuel or not, shall be installed by a Wisconsin certified installation company or under the direction of a professional engineer.

  • When the approved tank system is installed, final inspection and installation approval is performed by state inspector.

  • The approved installation checklist and tank registration paperwork shall be submitted to DATCP Permit staff: TR-WM-137 for underground tanks or TR-WM-118 for aboveground tanks.

  • If the installation was an underground tank system operating permits are required before operation. Details on what is required for a permit to operate can be found in ATCP 93.145 or by contacting our permitting department.

Conversion of Existing Tank System (ATCP 93.680)

  • Before conversion, Part I of the TR-WM-132 Alternative Fuels form shall be submitted to DATCP. This form requires the tank system installer or professional engineer to verify that the tank system materials are compatible with the fuel being stored. Installation plans do not need to be submitted for a conversion, only Part I of the form. Application fee is $135.00.

  • After DATCP approval, conversion can commence. Part II of the TR-WM-132 Alternative Fuels form shall be completed by the owner during the conversion process and retained on site for DATCP inspector review.

  • Prior to dispensing, the owner is to contact the DATCP petroleum inspector for inspection and fuel product testing.

  • A registration change is to be submitted to DATCP by the owner; TR-WM-137 for underground tanks TR-WM-118 for aboveground tanks.

For Weights and Measures Requirements (ATCP 92)

To find out local licensing requirements, the information on municipalities with their own weights and measures program can be found here.

The list of weights and measures service companies can be found here.


E15 Information

For information specifically related to E15, please visit our E15 webpage.


Fact Sheets


For further assistance or questions regarding storage tank plan approval or installation requirements for alternative fuels, please contact:

Greg Bareta
Section Chief, Storage Tank Regulation
Bureau of Weights & Measures
Wisconsin Department of Agriculture, Trade and Consumer Protection
2811 Agriculture Dr.
Madison, WI 53708
(608) 224-5150
(608) 221-6592  Fax

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