1. (1) General. Tank systems that are abandoned with or without product shall be closed within 60 days of non-compliance with s. ATCP 93.545 or in-use tank system requirements.

2. (2) Exceptions. Abandoned tank systems that are less than 30 years old or of double-wall construction may be returned to service if they all of the following conditions:

   1. (a) Apply for permits to operate in accordance with s. ATCP 93.145.

   2. (b)

      1. 1. The integrity of a fiberglass tank shall be assessed and certified by the manufacturer or a qualified professional engineer. The assessment shall include an internal inspection and certification that the tank is suitable for continued service.

      2. 2. The integrity assessment of a steel tank shall be performed in accordance with API 1631.

         1. a. Tanks that have an overall average tank metal thickness or an average tank thickness of a designated thin wall area of less than 75 percent or any through-wall perforations shall be immediately closed per s. ATCP 93.560.
         2. b. Tanks that have an overall average tank metal thickness or an average tank thickness of a designated thin wall area of 75 percent to 85 percent shall have an impressed current system installed per s. ATCP 93.520 or be immediately closed per s. ATCP 93.560.
         3. c. The certification and report of the assessment shall be submitted to the department for approval prior to adding product to the tank.
      3. 3. Cathodically protected tanks shall meet the requirements of s. ATCP 93.520.
      4. 4. Precision testing of the entire tank system without product shall be performed per s. ATCP 93.515 (4) by a certified tank system tightness tester.
      5. 5. A complete underground tank system functionality verification shall be conducted per s. ATCP 93.510 (2). Form TR-WM-139 documenting the verification shall be submitted to the department.
      6. 6. The tank system shall fully comply with this chapter before being placed back into service, except double-wall construction is not newly required for tank systems installed before February 1, 2009.
      7. 7. The tank system shall pass a department storage tank system inspection conducted in accordance with this chapter.

History

History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19; (1) (title) created under s. 13.92 (4) (b) 2., Stats., and correction in (2) (intro.), (b) 1., 7. made under s. 35.17, Stats., Register October 2019 No. 766.