1. (1) General. Except as provided in sub. (2), all of the following shall be located within a secondary containment structure that complies with s. ATCP 33.42:

   1. (a) Storage containers.
   2. (b) Storage container shut-off valves under s. ATCP 33.20 (2) (a).
   3. (c) Liquid level gauging devices under s. ATCP 33.20 (3).

2. (2) Exempt storage containers. No secondary containment is required under sub. (1) for any of the following:

   1. (a) An empty storage container that has been thoroughly cleaned and rinsed. A pesticide container is thoroughly cleaned and rinsed if all exterior surfaces of the container are free of pesticide residues and all inside surfaces are triple rinsed.

   2. (b) A mobile container kept at a storage facility for fewer than 7 days if all of the following apply:

      1. 1. Loading and unloading of the mobile container complies with ss. ATCP 33.30 and 33.32.
      2. 2. The storage facility has at least one storage container that has unused capacity greater than the total capacity of the mobile container.

   3. (c) A mini-bulk container if the exterior surfaces of the mini-bulk container are clean and one of the following applies:

      1. 1. The mini-bulk container is triple rinsed.
      2. 2. The mini-bulk container is equipped with a device to prevent the container from being triple rinsed.
   4. (d) An abandoned storage container if the operator complies with s. ATCP 33.20 (14).

History

History: CR 05-108: cr. Register October 2006 No. 610, eff. 11-1-06.