Wisconsin Administrative Code
Department of Agriculture, Trade and Consumer Protection
ATCP 90-139 - Trade and Consumer Protection
Chapter ATCP 93 - Flammable, Combustible, And Hazardous Liquids
Subchapter V - General UST Storage and Underground Piping
Section ATCP 93.550 - Change in service to store a non-regulated or a regulated substance

Universal Citation: WI Admin Code § ATCP 93.550

Current through August 26, 2024

(1) When a tank system that held a regulated substance undergoes a change in service to store a non-regulated substance, the owner or operator shall comply with all of the following requirements:

(a) At least 5 business days before beginning a change in service, the owner or operator shall notify the authorized agent or the department of the intended change.

(b) Before a change in service, the owner or operator shall have the tank emptied and cleaned, by removing all liquid and accumulated sludge in accordance with the procedures specified in API 2015.

(c) A tank system integrity assessment, and, if necessary, a tank system site assessment shall be performed for the tank system in accordance with ss. ATCP 93.575 to 93.585 after notifying the authorized agent or the department but before completing the change in service.

(d) Cleaning of tanks and tank system site assessments shall be performed by persons certified in accordance with s. ATCP 93.240(14) to (21).

(e) The owner shall have a revised tank registration, form TR-WM-137, and part A of the department's tank system service and closure assessment report, form TR-WM-140, completed and submitted to the department within 21 business days of changing a tank system to storage of a non-regulated substance.

Note: Form TR-WM-137 - Underground Flammable/Combustible/Hazardous Liquid Storage Tank Registration, and form TR-WM-140 - Tank System Service and Closure Assessment Report are available from the Bureau of Weights and Measures, PO Box 8911, Madison, WI 53708-8911, or at telephone (608) 224-4942, or from the Bureau's Web site at https://datcp.wi.gov/Pages/Programs_Services/PetroleumHazStorageTanks.aspx.

(f) The change in service shall occur within 60 days after in-use or temporarily out of service status is terminated.

(2) When a tank system that held a non-regulated substance undergoes a change in service to store a regulated substance, all applicable requirements of this chapter apply upon placing the tank system into service. These requirements include precision tightness testing for the liquid-containing portion and tightness testing for the ullage portion.

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