Storage Tank Installation Regulatory Synopsis

Basic Requirements to Install Aboveground or Underground Flammable, Combustible or Hazardous Liquid Storage Tanks

All underground storage tanks and aboveground storage tanks 60 gallon capacity and large must be installed as required by the Comm 10 administrative code.

1. Pre-installation plan submittal required for review and approval [Comm 10.100 & Comm 10.110]  Refer to exceptions at the bottom of this web page
   
   No specific qualifications for individual designing or submitting the plan Construction / installation on tank system may start when plan has been approved Installation / construction must be under the direct supervision of a Comm 5 certified UST or AST installer. Exception to b) - c) above is AST that stores a non flammable/combustible hazardous liquid if construction is directly supervised by a qualified engineer. [Comm 10.100(1)(b)6] Web page links: Comm 10 Code - Flammable, Combustible and  Hazardous Liquids Comm 5 Code - Credentials Tank inspection jurisdictions. Tank registration forms
   
2. Construction / installation must be supervised by a Wisconsin Comm 5 certified tank installer or a qualified engineer. [Comm 5.84 & 5.85]
   
   
3. Pre-installation notification must be made to designated inspector / inspection agency [Comm 10.115(2)]Plan submittal / review exceptions.
    
4. Comm 10.100(b) Plan review and approval is not required for any of the following:

1. Oil−burning installations for a 1− or 2−family dwelling which are located aboveground or in a basement, and which have a capacity of less than 1,100 gallons.
   
2. Integral fuel supply tanks of a motor vehicle, aircraft, watercraft, mobile power plant or mobile heating plant.
   
3. Aboveground tanks which have a capacity of less than 1,100 gallons and which store Class IIIB liquids other than used oil.
   
4. Reconfiguration of product piping that is located aboveground, from storage tanks supplying a regulated substance to a manufacturing, industrial or blending process.
   
5. Tank wagons, tank vehicles, or movable tanks, which are used for vehicle fueling operations under subch. VI.
   
6. Aboveground tank systems that store hazardous liquids which are not also flammable or combustible liquids, if the construction is supervised by a qualified engineer.
   
7. Portable tanks that are not used as fixed tanks.
   
8. Tanks that are located at a US EPA superfund site.
   
9. Aboveground tanks which are used at a farm premises or construction project in accordance with s. Comm 10.630, and which meet all of the following conditions:
1. Have a capacity of less than 1,100 gallons.
2. Are located at least 40 feet from either the buildings and structures listed in s. Comm 10.630 (2) (a), or important buildings or structures.
   
10. Fuel supply tanks which are used for a mobile power plant or mobile heating plant and which meet all of the following requirements:
1. The tank system is built and operated in accordance with a national standard.
2. The tank system is intended to be at the site for a period of 24 months or less.
3. The tank system has an aggregate capacity of less than 1,100 gallons.
4. The tank system does not use any Class I liquids.
   
11. Where the department determines that the review of a specific application, modification or contractor activity would not meet the regulatory oversight objective for technical plan review and approval.