Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 661 - Hazardous Waste Identification And Listing
Subchapter J - Tank Systems
Section NR 661.0191 - Assessment of existing tank system's integrity

Universal Citation: WI Admin Code ยง NR 661.0191

Current through August 26, 2024

(1) A tank system shall meet the secondary containment requirements specified in s. NR 661.0193, or the remanufacturer or other person that handles the hazardous secondary material shall determine that the tank system is not leaking or is unfit for use. Except as provided in sub. (3), a written assessment reviewed and certified by a qualified professional engineer shall be kept on file at the remanufacturer's facility or other facility that stores or treats the hazardous secondary material that attests to the tank system's integrity.

(2) The assessment under sub. (1) shall determine that the tank system is adequately designed and has sufficient structural strength and compatibility with the material to be stored or treated, to ensure that it will not collapse, rupture, or fail. At a minimum, this assessment shall consider all of the following:

(a) Design standard, if available, according to which the tank and ancillary equipment were constructed.

(b) Hazardous characteristics of the material that have been and will be handled.

(c) Existing corrosion protection measures.

(d) If available, the documented age of the tank system. Otherwise provide an estimate of the age of the tank system.

(e) Results of a leak test, internal inspection, or other tank integrity examination including whichever of the following is applicable:
1. For non-enterable underground tanks, the assessment shall include a leak test that is capable of taking into account the effects of temperature variations, tank end deflection, vapor pockets, and high water table effects.

2. For other than non-enterable underground tanks and for ancillary equipment, this assessment shall include either a leak test, as specified in subd. 1. or other integrity examination that is certified by a qualified professional engineer that addresses cracks, leaks, corrosion, and erosion.

(3) If, as a result of the assessment conducted in accordance with sub. (1), a tank system is found to be leaking or unfit for use, the remanufacturer or other person that stores or treats the hazardous secondary material shall comply with the requirements specified in s. NR 661.0196.

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