Section NR 667.0173 - What standards apply to the container storage areas?(1) Design and operate a containment system for your container storage areas according to the requirements in sub. (2), except as otherwise provided by sub. (3)(2) The design and operating requirements for a containment system are:(a) A base shall underlie the containers that is free of cracks or gaps and is sufficiently impervious to contain leaks, spills and accumulated precipitation until the collected material is detected and removed.(b) The base shall be sloped, or the containment system shall be otherwise designed and operated to drain and remove liquids resulting from leaks spills, or precipitation, unless the containers are elevated or are otherwise protected from contact with accumulated liquids.(c) The containment system shall have sufficient capacity to contain 10% of the volume of containers, or the volume of the largest container, whichever is greater. This requirement does not apply to containers that do not contain free liquids.(d) Prevent run-on into the containment system unless the collection system has sufficient excess capacity, in addition to that required in par. (c), to contain the liquid.(e) Remove any spilled or leaked waste and accumulated precipitation from the sump or collection area as promptly as is necessary to prevent overflow of the collection system.(3) Except as provided in sub. (4), you do not need a containment system as defined in sub. (2) for storage areas that store containers holding only wastes with no free liquids, if either: (a) The storage area is sloped or is otherwise designed and operated to drain and remove liquid resulting from precipitation.(b) The containers are elevated or are otherwise protected from contact with accumulated liquid.(4) You shall have a containment system defined by sub. (2) for storage areas that store containers holding FO20, FO21, FO22, FO23, FO26, and FO27 wastes, even if the wastes do not contain free liquids.Wis. Admin. Code Department of Natural Resources NR 667.0173
Adopted by, CR 16-007: cr. Register July 2017 No. 739, eff.8/1/2017