1. (1) General.

   1. (a) The installation of interior tank lining for underground storage tanks shall comply with API 1631 and this section.
   2. (b) An underground storage tank that does not meet the structural requirements specified in API 1631 may not be upgraded or repaired by lining and shall be permanently closed in accordance with this chapter.
   3. (c) When lining a tank, an access way for an inspector to enter the tank shall be installed from the tank interior to finished grade, if not already provided.

2. (2) Inspection and reporting requirements for tank lining.

   1. (a) General.

      1. 1. It is the responsibility of the lining contractor to communicate with the authorized agent or the department to establish the time for inspections.
      2. 2. The lining contractor shall give the authorized agent or the department at least 5 days of written notice before beginning the tank lining or any excavation preliminary to tank lining.
   2. (b) Plan approval. The tank owner is responsible for obtaining plan approval from the authorized agent or the department in accordance with s. ATCP 93.100 before beginning the tank lining or any excavation preliminary to tank lining.

   3. (c) Tank integrity assessment before lining.

      1. 1. The tank-lining contractor shall provide the tank owner and the authorized agent or the department with a written report of the assessment of the interior surface and structural condition of the tank before leaving the site and before installing the lining.

      2. 2. The tank integrity assessment shall include all of the following:

         1. a. A description of the internal wall condition including any deflection and any defects, rust plugs, holes or leaks, regardless of size or number.
         2. b. A description of any repair or other conditioning necessary to prepare the tank for interior lining.

         3. c. A description of the degree of compliance with all requirements under API 1631 regarding structural qualification, tank cleaning and other pre-lining activities.

            Note: Section 292.11, Stats., requires immediate notification of the department of natural resources in the event of a hazardous substance discharge.

      3. 3. If holes or rust plugs are observed during the visual internal inspection, the tank-lining contractor shall notify the owner before lining the tank that a tank-system site assessment must be performed, and that assessment shall be performed in accordance with ss. ATCP 93.575 to 93.585.

   4. (d) Authorization before lining.

      1. 1. The authorized agent or the department shall be at the site before the actual application of the lining.

      2. 2. The application of the interior lining may proceed only when authorized by the authorized agent or the department after verifying all of the following:

         1. a. The tank integrity assessment and any required tank-system site assessment have been completed.
         2. b. An approved set of plans is on the site.
         3. c. The condition of the tank has been communicated to the owner.
   5. (dm) Tank integrity assessment after lining. After installing the lining, the tank-lining contractor shall have a tightness test performed on the tank ullage in accordance with s. ATCP 93.515 (10) to assure that all tank-top connections and openings are liquid- and vapor-tight.

   6. (e) Completion of forms.

      1. 1.

         1. a. The certified tank system liner shall provide a completed, signed, and notarized API 1631 Form B inspection affidavit to the tank owner within 10 business days of completing the lining procedure.
         2. b. The signature on API 1631 Form B shall be that of the certified tank system liner who conducted the pre-lining tank integrity assessment and the lining procedure.

      2. 2. An underground tank installation checklist, form TR-WM-138, shall be completed and signed by the certified tank system liner and the certified tank system inspector.

         Note: Form TR-WM-138 — Checklist For Underground Tank Installation is 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.

         Note: See s. ATCP 93.240, Certifications and Enforcement, for requirements that certified tank system liners perform or supervise specific lining-related activities involving underground storage tanks.

   7. (f) Submittal of forms. The tank owner shall have all of the following documents submitted to the department within 15 business days of completing the lining procedure:

      1. 1. The pre-lining and post-lining tank integrity assessments under pars. (c) and (e).
      2. 2. The completed and signed API 1631, Form B under par. (e) 1.
      3. 3. The tank installation checklist under par. (e) 2.

      4. 4. A revised tank registration, form TR-WM-137.

         Note: Form TR-WM-137 — Underground Flammable/Combustible/Hazardous Liquid Storage Tank Registration is 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.

History

History: CR 17-092: cr. Register October 2019 No. 766, eff. 11-1-19.